/* roulang page: index */
:root{
  --bs-primary:#00A382;
  --bs-primary-rgb:0,163,130;
  --bs-body-bg:#F5F7FB;
  --bs-body-color:#0F2136;
  --bs-border-radius:12px;
  --bs-border-radius-lg:18px;
  --bs-link-color:#00A382;
  --bs-link-hover-color:#007C63;

  --ink:#071322;
  --ink-2:#0A1A2F;
  --ink-3:#0E2138;
  --glass:rgba(255,255,255,.055);
  --glass-line:rgba(255,255,255,.12);
  --cyan:#00E3B0;
  --cyan-hover:#22FFC6;
  --cyan-deep:#00A382;
  --cyan-deep-hover:#007C63;
  --signal:#FF6A35;
  --t-strong:#EAF2FF;
  --t-mid:#9CB0C9;
  --t-dim:#6B7F99;
  --bg-light:#F5F7FB;
  --card:#FFFFFF;
  --line:#E6EBF2;
  --tx:#0F2136;
  --tx-sub:#4B5F78;
  --r-card:18px;
  --r-img:22px;
  --r-btn:12px;
  --r-pill:999px;
  --sec-y:88px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --mono:ui-monospace,"DIN Alternate","SFMono-Regular",Menlo,Consolas,monospace;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--tx);
  background:var(--bg-light);
  -webkit-font-smoothing:antialiased;
  padding-bottom:0;
}
img{max-width:100%;display:block;border-radius:14px}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease)}
a:hover{color:var(--cyan-deep)}
h1,h2,h3,h4,h5{margin:0;font-weight:700;letter-spacing:.1px}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:6px}

.rk-container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.rk-sec{padding:var(--sec-y) 0}
.rk-dark{background:var(--ink);color:var(--t-strong)}
.rk-dark-2{background:var(--ink-2);color:var(--t-strong)}
.num{font-family:var(--mono);letter-spacing:.04em;font-size:.94em}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px}
.sec-head h2{font-size:clamp(22px,2.6vw,32px);line-height:1.35}
.sec-sub{margin-top:10px;color:var(--tx-sub);font-size:15px;max-width:620px}
.rk-dark .sec-sub,.rk-dark-2 .sec-sub{color:var(--t-mid)}
.sec-more{font-size:15px;color:var(--cyan-deep);font-weight:600;white-space:nowrap}
.sec-more:hover{color:var(--cyan-deep-hover)}
.divider-fade{height:1px;background:linear-gradient(90deg,rgba(0,227,176,0),rgba(0,227,176,.55),rgba(0,227,176,0))}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.08em;color:var(--cyan);font-family:var(--mono);text-transform:uppercase}
.eyebrow-light{color:var(--cyan-deep)}
.h2-bar{position:relative;padding-left:16px}
.h2-bar::before{content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:4px;border-radius:2px;background:var(--cyan-deep)}

/* buttons */
.btn-glow{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:linear-gradient(135deg,#00E3B0,#00A382);
  color:#04121F!important;font-weight:700;font-size:15px;
  border:0;border-radius:var(--r-btn);padding:14px 26px;
  box-shadow:0 0 0 1px rgba(0,227,176,.45),0 10px 28px rgba(0,227,176,.25);
  position:relative;overflow:hidden;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.btn-glow:hover{transform:translateY(-3px);box-shadow:0 0 0 1px rgba(0,227,176,.6),0 16px 36px rgba(0,227,176,.35)}
.btn-glow::after{content:"";position:absolute;top:0;left:-70%;width:38%;height:100%;background:linear-gradient(100deg,transparent,rgba(255,255,255,.6),transparent);transform:skewX(-18deg);opacity:0}
.btn-glow:hover::after{animation:sweep .72s ease-out}
@keyframes sweep{0%{left:-70%;opacity:.9}100%{left:130%;opacity:0}}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:1px solid var(--glass-line);background:rgba(255,255,255,.06);
  color:var(--t-strong)!important;font-weight:600;font-size:15px;
  border-radius:var(--r-btn);padding:13px 24px;
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  transition:transform .22s var(--ease),border-color .22s,background .22s;
}
.btn-ghost:hover{transform:translateY(-3px);border-color:rgba(0,227,176,.6);background:rgba(0,227,176,.12)}
.btn-solid{
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--cyan-deep);color:#fff!important;font-weight:700;font-size:15px;
  border-radius:var(--r-btn);padding:14px 26px;border:0;
  transition:transform .22s var(--ease),background .22s,box-shadow .22s;
}
.btn-solid:hover{background:var(--cyan-deep-hover);transform:translateY(-3px);box-shadow:0 12px 30px rgba(0,163,130,.28)}

/* header */
.site-header{
  position:sticky;top:0;z-index:1040;background:#fff;
  border-bottom:1px solid var(--line);
  box-shadow:0 2px 12px rgba(16,42,80,.06);
}
.nav-inner{display:flex;align-items:center;gap:20px;height:68px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-text{font-size:17px;font-weight:800;color:var(--tx);white-space:nowrap;letter-spacing:.2px}
.nav-links{display:flex;align-items:center;gap:20px;margin-left:6px}
.nav-links a{font-size:15px;color:#33465E;font-weight:500;padding:6px 0;position:relative;white-space:nowrap}
.nav-links a::after{content:"";position:absolute;left:0;right:0;bottom:-19px;height:2px;background:var(--cyan-deep);transform:scaleX(0);transform-origin:center;transition:transform .22s var(--ease)}
.nav-links a:hover{color:var(--cyan-deep)}
.nav-links a:hover::after{transform:scaleX(.5)}
.nav-links a.active{color:var(--tx);font-weight:700}
.nav-links a.active::after{transform:scaleX(1)}
.nav-right{display:flex;align-items:center;gap:12px;margin-left:auto}
.nav-search{position:relative;display:flex;align-items:center}
.nav-search input{
  width:180px;height:40px;border-radius:var(--r-pill);
  border:1px solid transparent;background:#F1F4F9;
  padding:0 16px 0 38px;font-size:14px;color:var(--tx);
  transition:border-color .22s,box-shadow .22s,background .22s;
}
.nav-search input::placeholder{color:#8798AE}
.nav-search input:focus{outline:none;background:#fff;border-color:var(--cyan);box-shadow:0 0 0 4px rgba(0,227,176,.16)}
.nav-search svg{position:absolute;left:14px;pointer-events:none}
.btn-nav{padding:11px 20px;font-size:14px;box-shadow:0 0 0 1px rgba(0,227,176,.4),0 8px 20px rgba(0,227,176,.22)}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:12px;align-items:center;justify-content:center}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--tx);position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--tx)}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* drawer */
.drawer-mask{position:fixed;inset:0;background:rgba(7,19,34,.5);opacity:0;visibility:hidden;transition:opacity .25s;z-index:1050}
.drawer-mask.show{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:82%;max-width:340px;background:#fff;z-index:1060;
  transform:translateX(102%);transition:transform .28s var(--ease);
  display:flex;flex-direction:column;padding:20px 20px calc(20px + env(safe-area-inset-bottom));
  box-shadow:-16px 0 40px rgba(15,35,70,.18);overflow-y:auto;
}
.drawer.show{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-close{width:40px;height:40px;border-radius:12px;border:1px solid var(--line);background:#F5F7FB;font-size:18px;color:var(--tx-sub)}
.drawer-links{display:flex;flex-direction:column;gap:2px;margin-bottom:18px}
.drawer-links a{padding:13px 12px;border-radius:12px;font-size:15px;color:#2A3C53;font-weight:500}
.drawer-links a.active{background:#EAFBF6;color:var(--cyan-deep-hover);font-weight:700}
.drawer-cta{width:100%;margin-top:auto}

/* hero */
.hero{position:relative;background:var(--ink);color:var(--t-strong);overflow:hidden;padding:78px 0 92px;min-height:620px;display:flex;align-items:center}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(120deg,rgba(7,19,34,.95) 0%,rgba(10,26,47,.74) 52%,rgba(7,19,34,.96) 100%),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(circle at 62% 45%,#000 0%,transparent 78%);
  -webkit-mask-image:radial-gradient(circle at 62% 45%,#000 0%,transparent 78%);
}
.hero .rk-container{position:relative;z-index:2}
.hero-arc{position:absolute;right:-140px;top:-120px;width:640px;height:640px;border-radius:50%;border:1px solid rgba(0,227,176,.18);z-index:1;pointer-events:none}
.hero-arc::before{content:"";position:absolute;inset:70px;border-radius:50%;border:1px solid rgba(0,227,176,.1)}
.hero h1{font-size:clamp(28px,4.4vw,48px);line-height:1.25;margin-bottom:20px}
.hero h1 em{font-style:normal;color:var(--cyan)}
.hero-sub{font-size:17px;color:var(--t-mid);max-width:560px;margin-bottom:30px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px}
.trust-row{display:flex;flex-wrap:wrap;gap:14px 30px}
.trust-item{display:flex;align-items:baseline;gap:8px;font-size:14px;color:var(--t-mid)}
.trust-item b{font-family:var(--mono);font-size:20px;color:var(--cyan);letter-spacing:.04em;font-weight:600}
.glass{
  background:var(--glass);border:1px solid var(--glass-line);border-radius:var(--r-card);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
}
.login-panel{padding:24px 24px 20px;position:relative;animation:rise .6s var(--ease) both}
.login-panel::after{content:"";position:absolute;inset:-16px;border-radius:26px;box-shadow:0 0 60px rgba(0,227,176,.18);pointer-events:none;z-index:-1}
@keyframes rise{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}
.panel-top{display:flex;align-items:center;gap:6px;margin-bottom:20px}
.panel-top .dot{width:8px;height:8px;border-radius:50%;background:rgba(255,255,255,.22)}
.panel-top .dot:first-child{background:rgba(0,227,176,.8)}
.panel-title{margin-left:8px;font-size:14px;color:var(--t-strong);font-weight:600}
.panel-field{margin-bottom:14px}
.panel-field label{display:block;font-size:12px;color:var(--t-dim);margin-bottom:7px;letter-spacing:.04em}
.mock-input{
  height:46px;border-radius:12px;background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.14);
  display:flex;align-items:center;justify-content:space-between;
  padding:0 14px;font-size:14px;color:var(--t-dim);
}
.mock-input .mini-btn{font-size:12px;color:var(--cyan);font-family:var(--mono);letter-spacing:.04em}
.mock-btn{
  height:48px;border-radius:12px;margin-top:20px;
  background:linear-gradient(135deg,#00E3B0,#00A382);color:#04121F;
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;
  box-shadow:0 0 0 1px rgba(0,227,176,.45),0 10px 28px rgba(0,227,176,.22);
}
.panel-tip{margin-top:14px;font-size:12px;color:var(--t-dim);line-height:1.7}

/* highlights */
.hl-lg{padding:32px;height:100%;position:relative;display:flex;flex-direction:column}
.hl-lg .num-badge{font-family:var(--mono);font-size:34px;color:var(--cyan);letter-spacing:.06em;line-height:1}
.hl-lg h3{font-size:22px;margin:18px 0 14px}
.hl-lg p{color:var(--t-mid);font-size:15px}
.hl-data{margin-top:auto;padding-top:22px;border-top:1px dashed rgba(255,255,255,.14);display:flex;gap:28px;flex-wrap:wrap}
.hl-data div{font-size:13px;color:var(--t-dim)}
.hl-data b{display:block;font-family:var(--mono);font-size:22px;color:var(--t-strong);letter-spacing:.04em;font-weight:600}
.hl-sm{display:flex;align-items:center;gap:20px;padding:26px;margin-bottom:24px;transition:transform .22s var(--ease),box-shadow .22s var(--ease)}
.hl-sm:last-child{margin-bottom:0}
.hl-sm:hover{transform:translateY(-4px);box-shadow:0 18px 40px rgba(0,10,30,.45)}
.hl-sm .num-badge{font-family:var(--mono);font-size:26px;color:var(--signal);letter-spacing:.06em;min-width:52px}
.hl-sm h3{font-size:19px;margin-bottom:8px}
.hl-sm p{color:var(--t-mid);font-size:14px}
.hl-ico{flex:0 0 56px;width:56px;height:56px;border-radius:16px;border:1px solid var(--glass-line);display:flex;align-items:center;justify-content:center;background:rgba(255,255,255,.04)}

/* steps */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;position:relative}
.step{position:relative}
.step-cover{position:relative;border-radius:var(--r-img);overflow:hidden;background:var(--ink-3);aspect-ratio:16/9;margin-bottom:18px}
.step-cover img{width:100%;height:100%;object-fit:cover;border-radius:var(--r-img);transition:transform .3s var(--ease)}
.step:hover .step-cover img{transform:scale(1.02)}
.step-no{font-family:var(--mono);font-size:14px;letter-spacing:.08em;color:var(--cyan);display:flex;align-items:center;gap:10px;margin-bottom:8px}
.step-no::after{content:"";flex:1;height:1px;background:linear-gradient(90deg,rgba(0,227,176,.5),rgba(0,227,176,0))}
.step h3{font-size:19px;color:var(--t-strong);margin-bottom:8px}
.step p{font-size:14px;color:var(--t-mid)}
.steps-mid-cta{margin-top:44px;text-align:center}

/* social */
.stat-bar{display:grid;grid-template-columns:repeat(4,1fr);gap:0;overflow:hidden;margin-bottom:44px}
.stat-cell{padding:26px 24px;border-right:1px solid rgba(255,255,255,.08)}
.stat-cell:last-child{border-right:0}
.stat-cell b{display:block;font-family:var(--mono);font-size:34px;color:var(--cyan);letter-spacing:.04em;line-height:1.2;font-weight:600}
.stat-cell span{font-size:13px;color:var(--t-mid)}
.quote-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-bottom:42px}
.quote{padding:26px;transition:transform .22s var(--ease),box-shadow .22s var(--ease)}
.quote:nth-child(2){transform:translateY(14px)}
.quote:hover{transform:translateY(-4px);box-shadow:0 18px 40px rgba(0,10,30,.45)}
.quote:nth-child(2):hover{transform:translateY(8px)}
.quote-top{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.avatar{width:42px;height:42px;border-radius:50%;background:linear-gradient(135deg,rgba(0,227,176,.35),rgba(255,106,53,.3));border:1px solid var(--glass-line);display:flex;align-items:center;justify-content:center;font-size:15px;color:var(--t-strong);font-weight:700}
.quote-top strong{font-size:14px;color:var(--t-strong);display:block;font-weight:600}
.quote-top em{font-style:normal;font-size:12px;color:var(--t-dim)}
.stars{display:flex;gap:3px;margin-bottom:12px}
.quote p{font-size:14px;color:var(--t-mid)}
.logo-strip{display:flex;flex-wrap:wrap;gap:12px;padding-top:28px;border-top:1px solid rgba(255,255,255,.08)}
.logo-strip span{font-size:13px;color:var(--t-dim);border:1px solid rgba(255,255,255,.1);border-radius:var(--r-pill);padding:8px 18px;letter-spacing:.04em}

/* posts */
.post-card{
  display:flex;flex-direction:column;height:100%;background:var(--card);
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  box-shadow:0 10px 30px rgba(15,35,70,.06);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s;
}
.post-card:hover{transform:translateY(-4px);box-shadow:0 18px 40px rgba(15,35,70,.12);border-color:#D8E6E1}
.post-cover{aspect-ratio:16/10;background:#E9EEF6;overflow:hidden}
.post-cover img{width:100%;height:100%;object-fit:cover;border-radius:0}
.post-body{padding:22px;display:flex;flex-direction:column;flex:1}
.badge-cat{
  display:inline-flex;align-items:center;font-size:12px;color:var(--cyan-deep);
  border:1px solid rgba(0,163,130,.35);border-radius:var(--r-pill);
  padding:3px 12px;margin-bottom:12px;align-self:flex-start;background:rgba(0,227,176,.06);
}
.post-card h3{font-size:17px;line-height:1.55;margin-bottom:10px;transition:color .22s}
.post-card:hover h3{color:var(--cyan-deep)}
.post-card h3 a{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-excerpt{font-size:14px;color:var(--tx-sub);line-height:1.8;margin-bottom:18px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.post-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:#8798AE;font-family:var(--mono);letter-spacing:.04em}
.post-foot .arrow{color:var(--cyan-deep);font-family:inherit;font-weight:600}
.empty-box{
  background:#fff;border:1px dashed var(--line);border-radius:var(--r-card);
  padding:48px 24px;text-align:center;box-shadow:0 10px 30px rgba(15,35,70,.05);
}
.empty-box p{color:var(--tx-sub);margin:14px 0 18px;font-size:15px}
.empty-link{font-size:14px;font-weight:600;color:var(--cyan-deep)}

/* faq */
.rk-faq .accordion-item{
  border:1px solid var(--line);border-radius:16px;background:#fff;
  margin-bottom:14px;overflow:hidden;box-shadow:0 10px 30px rgba(15,35,70,.05);
  transition:box-shadow .22s var(--ease);
}
.rk-faq .accordion-item:has(.accordion-button:not(.collapsed)){box-shadow:inset 4px 0 0 var(--cyan-deep),0 14px 34px rgba(15,35,70,.09)}
.rk-faq .accordion-button{
  font-size:17px;font-weight:600;color:var(--tx);background:#fff;
  padding:20px 24px 20px 68px;position:relative;box-shadow:none;border:0;
}
.rk-faq .accordion-button:not(.collapsed){color:var(--tx);font-weight:700;background:#fff;box-shadow:none}
.rk-faq .accordion-button::after{display:none}
.rk-faq .accordion-button::before{
  content:"?";position:absolute;left:24px;top:50%;transform:translateY(-50%);
  width:28px;height:28px;border-radius:50%;border:1px solid rgba(0,163,130,.4);
  color:var(--cyan-deep);display:flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:700;font-family:var(--mono);
}
.rk-faq .accordion-button:focus{box-shadow:none;outline:none}
.rk-faq .accordion-button:focus-visible{outline:2px solid var(--cyan);outline-offset:-2px}
.rk-faq .accordion-body{padding:0 24px 22px 68px;font-size:15px;color:var(--tx-sub);line-height:1.85}

/* cta band */
.cta-band{position:relative;padding:70px 0;background:var(--ink-2);color:var(--t-strong);overflow:hidden;text-align:center}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(115deg,rgba(7,19,34,.94),rgba(10,26,47,.8)),url('/assets/images/backpic/back-3.png');
  background-size:cover;background-position:center;
}
.cta-band .rk-container{position:relative;z-index:2}
.cta-band h2{font-size:clamp(22px,2.6vw,32px);margin-bottom:14px}
.cta-band p{color:var(--t-mid);max-width:620px;margin:0 auto 28px;font-size:15px}

/* footer */
.site-footer{background:#FFFFFF;border-top:1px solid var(--line);padding:64px 0 0}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:44px}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.foot-brand span{font-size:16px;font-weight:800;color:var(--tx)}
.foot-desc{font-size:14px;color:var(--tx-sub);max-width:320px;line-height:1.85}
.foot-col h4{font-size:15px;font-weight:700;color:var(--tx);margin-bottom:16px}
.foot-col ul li{margin-bottom:11px}
.foot-col a{font-size:14px;color:var(--tx-sub)}
.foot-col a:hover{color:var(--cyan-deep)}
.foot-contact{font-size:14px;color:var(--tx-sub);line-height:2}
.foot-contact b{color:var(--tx);font-weight:600}
.foot-bottom{border-top:1px solid var(--line);padding:22px 0;display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between}
.foot-bottom p{font-size:13px;color:#8798AE}
.foot-bottom .mono{font-family:var(--mono);letter-spacing:.04em}

/* bottom bar */
.bottom-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:1035;
  background:rgba(9,22,38,.92);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border-top:1px solid rgba(0,227,176,.28);
  transform:translateY(120%);transition:transform .3s var(--ease);
  padding-bottom:env(safe-area-inset-bottom);
}
.bottom-bar.show{transform:translateY(0)}
.bottom-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:64px}
.bottom-text{font-size:14px;color:var(--t-mid)}
.bottom-actions{display:flex;align-items:center;gap:12px}
.btn-glow-sm{padding:11px 22px;font-size:14px}
.btn-ghost-sm{padding:10px 20px;font-size:14px}

/* responsive */
@media (max-width:1199.98px){
  .nav-search input{width:150px}
  .nav-links{gap:16px}
}
@media (max-width:991.98px){
  :root{--sec-y:64px}
  .nav-links,.nav-search{display:none}
  .nav-toggle{display:flex}
  .btn-nav{display:none}
  .hero{min-height:auto;padding:56px 0 64px}
  .hero-sub{font-size:16px}
  .login-panel{margin-top:38px}
  .steps{grid-template-columns:1fr}
  .stat-bar{grid-template-columns:repeat(2,1fr)}
  .stat-cell:nth-child(2){border-right:0}
  .stat-cell:nth-child(1),.stat-cell:nth-child(2){border-bottom:1px solid rgba(255,255,255,.08)}
  .quote-grid{grid-template-columns:1fr}
  .quote:nth-child(2){transform:none}
  .quote:nth-child(2):hover{transform:translateY(-4px)}
  .foot-grid{grid-template-columns:1fr 1fr;gap:28px}
  .bottom-bar{transform:translateY(0)}
  .bottom-text{display:none}
  .bottom-actions{width:100%;justify-content:space-between}
  .bottom-actions .btn-glow{flex:1 1 62%}
  body{padding-bottom:calc(72px + env(safe-area-inset-bottom))}
}
@media (max-width:575.98px){
  :root{--sec-y:48px}
  .rk-container{padding:0 16px}
  .hero h1{font-size:clamp(26px,7vw,34px)}
  .hero-actions{gap:12px}
  .hero-actions a{flex:1 1 100%}
  .trust-row{gap:12px 20px}
  .sec-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:28px}
  .hl-lg{padding:24px}
  .hl-sm{padding:20px;gap:14px}
  .hl-sm .num-badge{min-width:40px;font-size:22px}
  .stat-cell{padding:20px 16px}
  .stat-cell b{font-size:26px}
  .foot-grid{grid-template-columns:1fr}
  .cta-band{padding:52px 0}
  .hl-data{gap:18px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* roulang page: category1 */
:root{
  --rk-dark:#071322;
  --rk-dark-2:#0A1A2F;
  --rk-dark-3:#0E2138;
  --rk-cyan:#00E3B0;
  --rk-cyan-h:#22FFC6;
  --rk-cyan-deep:#00A382;
  --rk-orange:#FF6A35;
  --rk-td:#EAF2FF;
  --rk-td2:#9CB0C9;
  --rk-td3:#6B7F99;
  --rk-light:#F5F7FB;
  --rk-white:#FFFFFF;
  --rk-line:#E6EBF2;
  --rk-text:#0F2136;
  --rk-text2:#4B5F78;
  --r-card:18px;
  --r-img:22px;
  --r-btn:12px;
  --r-pill:999px;
  --sh-dark:0 18px 40px rgba(0,10,30,.45);
  --sh-light:0 10px 30px rgba(15,35,70,.08);
  --sh-glow:0 0 0 1px rgba(0,227,176,.45), 0 10px 28px rgba(0,227,176,.25);
  --ease:cubic-bezier(.22,.61,.36,1);

  --bs-primary:#00A382;
  --bs-body-bg:#F5F7FB;
  --bs-body-color:#0F2136;
  --bs-border-radius:12px;
  --bs-border-color:#E6EBF2;
  --bs-link-color:#00A382;
  --bs-link-hover-color:#00795f;
  --bs-font-sans-serif:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--rk-text);
  background:var(--rk-light);
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--rk-cyan-deep);text-decoration:none;transition:color .22s var(--ease)}
a:hover{color:#00795f}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;color:var(--rk-text);letter-spacing:.01em}
h1{font-size:clamp(28px,4.4vw,48px);line-height:1.25;font-weight:700}
h2{font-size:clamp(22px,2.6vw,32px);line-height:1.35;font-weight:700}
h3{font-size:20px;line-height:1.5;font-weight:600}
p{margin:0 0 1em}
.mono{font-family:ui-monospace,"DIN Alternate","SFMono-Regular",Menlo,monospace;letter-spacing:.04em;font-size:.92em}
:focus-visible{outline:2px solid var(--rk-cyan);outline-offset:2px;border-radius:6px}

.rk-container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ============ Header ============ */
.site-header{
  position:sticky;top:0;z-index:70;
  background:#fff;
  border-bottom:1px solid var(--rk-line);
  box-shadow:0 2px 12px rgba(16,42,80,.06);
}
.nav-inner{display:flex;align-items:center;gap:24px;height:68px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-text{
  font-size:17px;font-weight:800;color:var(--rk-text);letter-spacing:.01em;white-space:nowrap;
}
.nav-links{display:flex;align-items:center;gap:4px;margin:0 auto;flex-wrap:nowrap}
.nav-links a{
  position:relative;display:inline-block;
  padding:8px 12px;border-radius:8px;
  font-size:15px;color:#31465e;font-weight:500;white-space:nowrap;
  transition:color .22s var(--ease),background .22s var(--ease);
}
.nav-links a:hover{color:var(--rk-cyan-deep);background:#F1F7F5}
.nav-links a.active{color:var(--rk-text);font-weight:700}
.nav-links a.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:0;height:2px;
  border-radius:2px;background:var(--rk-cyan);
}
.nav-right{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.nav-search{
  display:flex;align-items:center;gap:8px;
  background:#F1F4F9;border:1px solid transparent;border-radius:var(--r-pill);
  padding:0 14px;height:42px;transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.nav-search:focus-within{border-color:var(--rk-cyan);box-shadow:0 0 0 4px rgba(0,227,176,.16);background:#fff}
.nav-search input{
  border:0;background:transparent;outline:none;font-size:14px;width:132px;color:var(--rk-text);
}
.nav-search input::placeholder{color:#8798AE}

.btn-glow{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:0 22px;height:46px;border-radius:10px;border:0;
  font-size:15px;font-weight:700;color:#04241C;
  background:linear-gradient(135deg,#00E3B0,#00B98F);
  box-shadow:var(--sh-glow);
  position:relative;overflow:hidden;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),color .22s var(--ease);
}
.btn-glow::after{
  content:"";position:absolute;top:0;left:-140%;width:60%;height:100%;
  background:linear-gradient(100deg,transparent,rgba(255,255,255,.65),transparent);
  transform:skewX(-18deg);transition:left .6s var(--ease);
}
.btn-glow:hover{color:#04241C;transform:translateY(-2px);box-shadow:0 0 0 1px rgba(0,227,176,.6),0 14px 30px rgba(0,227,176,.32)}
.btn-glow:hover::after{left:150%}
.btn-glow.btn-nav{height:42px;padding:0 18px;font-size:14px}

.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;
  padding:0 22px;height:46px;border-radius:10px;
  font-size:15px;font-weight:600;color:var(--rk-td);
  background:rgba(255,255,255,.07);
  border:1px solid rgba(255,255,255,.24);
  backdrop-filter:blur(10px);
  transition:transform .22s var(--ease),border-color .22s var(--ease),background .22s var(--ease);
}
.btn-ghost:hover{color:#fff;border-color:var(--rk-cyan);background:rgba(0,227,176,.12);transform:translateY(-2px)}
.btn-ghost.sm{height:42px;padding:0 18px;font-size:14px}

.btn-line{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:0 20px;height:44px;border-radius:10px;
  font-size:15px;font-weight:600;color:var(--rk-cyan-deep);
  border:1px solid rgba(0,163,130,.4);background:#fff;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.btn-line:hover{color:var(--rk-cyan-deep);border-color:var(--rk-cyan-deep);box-shadow:0 8px 20px rgba(0,163,130,.16);transform:translateY(-2px)}

.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;
  border:1px solid var(--rk-line);background:#fff;
  align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  content:"";display:block;width:18px;height:2px;background:#31465e;border-radius:2px;position:relative;
}
.nav-toggle span::before{position:absolute;top:-6px}
.nav-toggle span::after{position:absolute;top:6px}

/* ============ Hero ============ */
.hero-cat{
  position:relative;color:var(--rk-td);
  background-color:var(--rk-dark);
  background-image:linear-gradient(120deg,rgba(7,19,34,.95) 0%,rgba(10,26,47,.86) 55%,rgba(7,19,34,.92) 100%),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  padding:64px 0 72px;
  overflow:hidden;
}
.hero-cat::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:56px 56px;
}
.hero-cat::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(0,227,176,.65),transparent);
}
.hero-cat .rk-container{position:relative;z-index:2}
.crumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13px;color:var(--rk-td3);margin-bottom:20px;
}
.crumb a{color:var(--rk-td2)}
.crumb a:hover{color:var(--rk-cyan)}
.crumb span.dot{color:#3C5470}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);
  border:1px solid rgba(0,227,176,.45);background:rgba(0,227,176,.1);
  color:var(--rk-cyan);font-size:13px;font-weight:600;letter-spacing:.06em;
  margin-bottom:18px;
}
.hero-cat h1{color:#fff;max-width:900px;margin-bottom:18px}
.hero-cat h1 em{font-style:normal;color:var(--rk-cyan)}
.hero-sub{
  max-width:720px;color:var(--rk-td2);font-size:17px;line-height:1.8;margin:0 0 28px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.hero-meta{
  display:flex;flex-wrap:wrap;gap:28px;margin-top:34px;
  padding-top:24px;border-top:1px dashed rgba(255,255,255,.14);
}
.hero-meta .mi b{
  display:block;font-family:ui-monospace,"DIN Alternate",monospace;
  font-size:26px;line-height:1.2;color:#fff;letter-spacing:.04em;
}
.hero-meta .mi span{font-size:13px;color:var(--rk-td3)}

/* ============ 区块通用 ============ */
.section{padding:88px 0}
.section-light{background:var(--rk-light)}
.section-white{background:#fff}
.sec-head{max-width:760px;margin-bottom:40px}
.sec-head h2{position:relative;padding-left:16px;margin-bottom:14px}
.sec-head h2::before{
  content:"";position:absolute;left:0;top:.28em;bottom:.28em;width:4px;border-radius:3px;
  background:linear-gradient(180deg,var(--rk-cyan),var(--rk-cyan-deep));
}
.sec-head p{color:var(--rk-text2);margin:0;font-size:16px}
.eyebrow{
  font-family:ui-monospace,"DIN Alternate",monospace;
  font-size:12px;letter-spacing:.16em;color:var(--rk-cyan-deep);text-transform:uppercase;
  display:block;margin-bottom:10px;
}

/* ============ 双栏：左文右卡 ============ */
.two-col{display:grid;grid-template-columns:1fr 388px;gap:40px;align-items:start}
.prose-block p{color:var(--rk-text2);font-size:16.5px;line-height:1.9}
.prose-block h3{margin:34px 0 12px;font-size:20px}
.prose-block h3:first-child{margin-top:0}
.pt-list{list-style:none;padding:0;margin:18px 0 0;display:grid;gap:12px}
.pt-list li{
  position:relative;padding:14px 18px 14px 46px;
  background:#fff;border:1px solid var(--rk-line);border-radius:14px;
  color:var(--rk-text2);font-size:15px;line-height:1.7;
  box-shadow:0 4px 14px rgba(15,35,70,.04);
}
.pt-list li::before{
  content:"";position:absolute;left:18px;top:50%;transform:translateY(-50%);
  width:16px;height:16px;border-radius:50%;
  border:1.5px solid var(--rk-cyan-deep);
  background:radial-gradient(circle at center,var(--rk-cyan) 0 3px,transparent 3.5px);
}
.pt-list li b{color:var(--rk-text)}

.info-card{
  position:sticky;top:92px;
  border-radius:var(--r-card);
  padding:26px 24px;
  background:linear-gradient(160deg,rgba(10,26,47,.96),rgba(7,19,34,.98));
  border:1px solid rgba(0,227,176,.22);
  box-shadow:0 24px 50px rgba(0,10,30,.35);
  color:var(--rk-td);
}
.info-card .ic-head{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding-bottom:16px;margin-bottom:18px;border-bottom:1px solid rgba(255,255,255,.12);
}
.info-card .ic-head h3{color:#fff;font-size:17px}
.info-card .ic-dots{display:flex;gap:6px}
.info-card .ic-dots i{width:8px;height:8px;border-radius:50%;background:rgba(255,255,255,.2);display:block}
.info-card .ic-dots i:first-child{background:var(--rk-cyan)}
.ic-row{display:flex;gap:12px;padding:12px 0;border-bottom:1px dashed rgba(255,255,255,.1)}
.ic-row:last-of-type{border-bottom:0}
.ic-num{
  flex:0 0 auto;font-family:ui-monospace,"DIN Alternate",monospace;
  font-size:13px;color:var(--rk-orange);letter-spacing:.06em;padding-top:2px;
}
.ic-row b{display:block;color:#fff;font-size:15px;margin-bottom:4px;font-weight:600}
.ic-row p{margin:0;font-size:13.5px;line-height:1.7;color:var(--rk-td2)}
.info-card .btn-glow{width:100%;margin-top:20px}
.info-card .ic-note{margin:14px 0 0;font-size:12.5px;color:var(--rk-td3);text-align:center}

/* ============ 图文交错 ============ */
.zigzag{display:grid;gap:64px}
.zz-item{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center}
.zz-item.reverse .zz-media{order:2}
.zz-media{
  border-radius:var(--r-img);overflow:hidden;background:var(--rk-dark-3);
  box-shadow:0 18px 40px rgba(15,35,70,.14);
  aspect-ratio:16/10;
}
.zz-media img{width:100%;height:100%;object-fit:cover}
.zz-body h3{margin-bottom:14px}
.zz-body p{color:var(--rk-text2);font-size:16px;line-height:1.85}
.zz-points{list-style:none;padding:0;margin:18px 0 0;display:grid;gap:10px}
.zz-points li{
  display:flex;gap:10px;font-size:15px;color:var(--rk-text2);line-height:1.7;
}
.zz-points li::before{
  content:"";flex:0 0 auto;margin-top:9px;width:7px;height:7px;border-radius:2px;
  background:var(--rk-cyan);box-shadow:0 0 0 3px rgba(0,227,176,.16);
}
.zz-step{
  display:inline-block;font-family:ui-monospace,"DIN Alternate",monospace;
  font-size:13px;color:var(--rk-orange);letter-spacing:.08em;margin-bottom:10px;
}

/* ============ FAQ ============ */
.faq-wrap{max-width:920px}
.rk-acc .accordion-item{
  border:1px solid var(--rk-line);border-radius:16px;overflow:hidden;
  margin-bottom:14px;background:#fff;box-shadow:0 4px 16px rgba(15,35,70,.05);
}
.rk-acc .accordion-item:has(.accordion-button:not(.collapsed)){
  border-left:4px solid var(--rk-cyan);
}
.rk-acc .accordion-button{
  display:flex;align-items:center;gap:14px;
  padding:20px 22px;font-size:16.5px;font-weight:600;color:var(--rk-text);
  background:#fff;box-shadow:none;border:0;
}
.rk-acc .accordion-button::before{
  content:"?";flex:0 0 auto;
  width:26px;height:26px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-family:ui-monospace,"DIN Alternate",monospace;font-size:14px;font-weight:700;
  color:var(--rk-cyan-deep);border:1.5px solid rgba(0,163,130,.5);background:#F1FAF7;
}
.rk-acc .accordion-button::after{
  content:"";width:10px;height:10px;
  border-right:2px solid #8798AE;border-bottom:2px solid #8798AE;
  transform:rotate(45deg);background:none;
  transition:transform .22s var(--ease);margin-left:auto;flex:0 0 auto;
}
.rk-acc .accordion-button:not(.collapsed){
  color:var(--rk-text);background:#FBFDFC;font-weight:700;box-shadow:none;
}
.rk-acc .accordion-button:not(.collapsed)::after{transform:rotate(-135deg);border-color:var(--rk-cyan-deep)}
.rk-acc .accordion-button:focus{box-shadow:none;outline:none}
.rk-acc .accordion-button:focus-visible{outline:2px solid var(--rk-cyan);outline-offset:-2px}
.rk-acc .accordion-body{
  padding:0 22px 22px 62px;color:var(--rk-text2);font-size:15.5px;line-height:1.85;
}

/* ============ CTA 带 ============ */
.cta-band{
  position:relative;color:var(--rk-td);overflow:hidden;
  background-color:var(--rk-dark);
  background-image:linear-gradient(115deg,rgba(7,19,34,.96),rgba(10,26,47,.9)),url('/assets/images/backpic/back-3.png');
  background-size:cover;background-position:center;
  padding:72px 0;
}
.cta-band::after{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(0,227,176,.6),transparent);
}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap}
.cta-inner h2{color:#fff;margin-bottom:10px}
.cta-inner p{color:var(--rk-td2);margin:0;max-width:560px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ============ Footer ============ */
.site-footer{background:var(--rk-dark);color:var(--rk-td2);padding:64px 0 26px;position:relative}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(0,227,176,.45),transparent);
}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:36px;padding-bottom:38px;border-bottom:1px solid rgba(255,255,255,.1)}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.foot-brand span{color:#fff;font-size:17px;font-weight:700}
.foot-desc{font-size:14px;line-height:1.8;color:var(--rk-td3);margin:0;max-width:320px}
.foot-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px}
.foot-col ul{list-style:none;padding:0;margin:0;display:grid;gap:10px}
.foot-col ul a{color:var(--rk-td2);font-size:14px}
.foot-col ul a:hover{color:var(--rk-cyan)}
.foot-contact{font-size:14px;line-height:2;color:var(--rk-td2);margin:0}
.foot-contact b{color:#fff;font-weight:600}
.foot-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-top:22px;flex-wrap:wrap}
.foot-bottom p{margin:0;font-size:13px;color:var(--rk-td3)}
.foot-bottom .mono{color:#4A6076}

/* ============ 底部固定转化条 ============ */
.sticky-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:80;
  background:rgba(7,19,34,.9);
  backdrop-filter:blur(16px);
  border-top:1px solid rgba(0,227,176,.3);
  transform:translateY(115%);
  transition:transform .3s var(--ease);
  padding-bottom:env(safe-area-inset-bottom);
}
.sticky-bar.show{transform:translateY(0)}
.bar-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:64px}
.bar-text{margin:0;color:var(--rk-td2);font-size:14.5px}
.bar-text b{color:#fff}
.bar-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.bar-actions .btn-glow{height:42px;padding:0 20px;font-size:14px}

@media (max-width:1199px){
  .two-col{grid-template-columns:1fr 340px;gap:32px}
}
@media (max-width:991px){
  .nav-inner{height:56px;gap:12px}
  .nav-links{
    position:fixed;top:56px;left:0;right:0;bottom:0;
    background:#fff;flex-direction:column;align-items:stretch;gap:6px;
    padding:24px;margin:0;
    transform:translateX(-102%);transition:transform .28s var(--ease);
    box-shadow:0 18px 40px rgba(16,42,80,.12);overflow-y:auto;
  }
  .nav-links.open{transform:translateX(0)}
  .nav-links a{padding:14px 12px;font-size:16px;border-radius:10px}
  .nav-links a.active{background:#F1F7F5}
  .nav-links a.active::after{display:none}
  .nav-toggle{display:flex}
  .nav-search{display:none}
  .section{padding:64px 0}
  .two-col{grid-template-columns:1fr;gap:28px}
  .info-card{position:static}
  .zz-item{grid-template-columns:1fr;gap:24px}
  .zz-item.reverse .zz-media{order:0}
  .foot-grid{grid-template-columns:1fr 1fr;gap:28px}
  .hero-cat{padding:48px 0 56px}
}
@media (max-width:767px){
  .rk-container{padding:0 16px}
  .section{padding:48px 0}
  body{padding-bottom:70px}
  .sticky-bar{transform:translateY(0)}
  .bar-inner{height:auto;min-height:60px;padding-top:8px;padding-bottom:8px;gap:12px}
  .bar-text{font-size:13px;line-height:1.5;max-width:52%}
  .bar-actions{gap:8px}
  .bar-actions .btn-ghost{display:none}
  .bar-actions .btn-glow{height:46px;min-width:150px}
  .foot-grid{grid-template-columns:1fr;gap:26px}
  .hero-meta{gap:18px 26px}
  .hero-meta .mi b{font-size:22px}
  .rk-acc .accordion-body{padding:0 18px 20px 18px}
  .rk-acc .accordion-button{padding:16px 18px;font-size:15.5px}
  .cta-inner{flex-direction:column;align-items:flex-start}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:.001ms !important;animation-duration:.001ms !important}
  .btn-glow:hover{transform:none}
  .btn-ghost:hover{transform:none}
}

/* roulang page: article */
:root{
  --bs-primary:#00A382;
  --bs-primary-rgb:0,163,130;
  --bs-body-bg:#F5F7FB;
  --bs-body-color:#0F2136;
  --bs-border-radius:18px;
  --bs-border-radius-sm:12px;
  --bs-font-sans-serif:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;

  --rk-dark-1:#071322;
  --rk-dark-2:#0A1A2F;
  --rk-glass:rgba(255,255,255,.055);
  --rk-glass-line:rgba(255,255,255,.12);
  --rk-cyan:#00E3B0;
  --rk-cyan-hover:#22FFC6;
  --rk-cyan-deep:#00A382;
  --rk-orange:#FF6A35;
  --rk-light-text:#EAF2FF;
  --rk-light-dim:#9CB0C9;
  --rk-bg:#F5F7FB;
  --rk-card:#FFFFFF;
  --rk-line:#E6EBF2;
  --rk-ink:#0F2136;
  --rk-ink-2:#4B5F78;
  --rk-ink-3:#8798AE;
  --rk-r-card:18px;
  --rk-r-lg:22px;
  --rk-r-ctl:12px;
  --rk-sh-card:0 10px 30px rgba(15,35,70,.08);
  --rk-sh-dark:0 18px 40px rgba(0,10,30,.45);
  --rk-ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--bs-font-sans-serif);
  background:var(--rk-bg);
  color:var(--rk-ink);
  font-size:16px;
  line-height:1.85;
  padding-bottom:80px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button,input{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0;}
ul,ol{list-style:none;}
.mono{font-family:ui-monospace,"DIN Alternate",SFMono-Regular,Menlo,Consolas,monospace;font-size:13px;letter-spacing:.04em;}
.rk-container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
:focus-visible{outline:2px solid var(--rk-cyan);outline-offset:2px;border-radius:6px;}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:#fff;
  border-bottom:1px solid var(--rk-line);
  box-shadow:0 2px 12px rgba(16,42,80,.06);
}
.nav-inner{display:flex;align-items:center;gap:20px;height:68px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand svg{flex:0 0 auto;}
.brand-text{font-size:17px;font-weight:700;color:var(--rk-ink);letter-spacing:.01em;white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:4px;flex:1 1 auto;margin-left:6px;}
.nav-links a{
  position:relative;padding:9px 12px;font-size:15px;color:#3E546E;border-radius:9px;
  white-space:nowrap;transition:color .22s var(--rk-ease),background .22s var(--rk-ease);
}
.nav-links a:hover{color:var(--rk-cyan-deep);background:#F1F7F5;}
.nav-links a.active{color:var(--rk-ink);font-weight:700;}
.nav-links a.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:1px;height:2px;
  border-radius:2px;background:var(--rk-cyan);
}
.nav-right{display:flex;align-items:center;gap:12px;margin-left:auto;}
.nav-search{
  display:flex;align-items:center;gap:8px;height:40px;padding:0 14px;
  background:#F1F4F9;border:1px solid transparent;border-radius:999px;
  transition:border-color .22s var(--rk-ease),box-shadow .22s var(--rk-ease),background .22s var(--rk-ease);
}
.nav-search:focus-within{background:#fff;border-color:var(--rk-cyan);box-shadow:0 0 0 4px rgba(0,227,176,.14);}
.nav-search input{border:0;background:transparent;outline:none;font-size:14px;color:var(--rk-ink);width:140px;}
.nav-search input::placeholder{color:var(--rk-ink-3);}
.btn-glow{
  position:relative;overflow:hidden;display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:linear-gradient(135deg,#00E3B0,#00A382);
  color:#04121E;font-weight:700;border:0;border-radius:10px;cursor:pointer;
  box-shadow:0 0 0 1px rgba(0,227,176,.45),0 10px 28px rgba(0,227,176,.25);
  transition:transform .22s var(--rk-ease),box-shadow .22s var(--rk-ease),color .22s var(--rk-ease);
}
.btn-glow:hover,.btn-glow:focus-visible{
  transform:translateY(-4px);color:#04121E;
  box-shadow:0 0 0 1px rgba(0,227,176,.6),0 16px 34px rgba(0,227,176,.34);
}
.btn-glow::after{
  content:"";position:absolute;top:-60%;left:-130%;width:55%;height:220%;
  background:linear-gradient(45deg,transparent,rgba(255,255,255,.55),transparent);
  transform:skewX(-20deg);
}
.btn-glow:hover::after{animation:rkSweep .72s ease-out 1;}
@keyframes rkSweep{from{left:-130%;}to{left:140%;}}
.btn-nav{height:40px;padding:0 18px;font-size:14px;}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--rk-line);
  background:#F1F4F9;align-items:center;justify-content:center;cursor:pointer;padding:0;flex:0 0 auto;
}
.nav-toggle span{display:block;width:16px;height:2px;background:var(--rk-ink);border-radius:2px;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:16px;height:2px;background:var(--rk-ink);border-radius:2px;
}
.nav-toggle span::before{top:-5px;}
.nav-toggle span::after{top:5px;}

/* ---------- article head ---------- */
.art-head{
  padding:52px 0 30px;
  background:
    radial-gradient(900px 280px at 12% -30%,rgba(0,227,176,.12),transparent 62%),
    var(--rk-bg);
}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--rk-ink-2);margin-bottom:20px;}
.crumb a{color:var(--rk-ink-2);transition:color .2s var(--rk-ease);}
.crumb a:hover{color:var(--rk-cyan-deep);}
.crumb .sep{color:#C2CFDF;}
.crumb .now{color:var(--rk-ink);font-weight:600;max-width:52ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.art-title{
  font-size:clamp(24px,3.1vw,36px);line-height:1.38;font-weight:700;
  letter-spacing:-.01em;margin-bottom:18px;max-width:22ch;color:var(--rk-ink);
}
.art-meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;font-size:13px;color:var(--rk-ink-2);}
.badge-cat{
  display:inline-flex;align-items:center;height:26px;padding:0 13px;border-radius:999px;
  border:1px solid rgba(0,163,130,.45);background:rgba(0,227,176,.08);
  color:var(--rk-cyan-deep);font-size:12px;font-weight:600;letter-spacing:.02em;
}
.meta-dot{width:4px;height:4px;border-radius:50%;background:#C7D3E2;}

/* ---------- article main ---------- */
.art-main{padding:10px 0 64px;}
.art-grid{
  display:grid;grid-template-columns:minmax(0,840px) 250px;
  gap:44px;justify-content:center;align-items:start;
}
.art-card{
  background:#fff;border:1px solid var(--rk-line);border-radius:var(--rk-r-lg);
  box-shadow:var(--rk-sh-card);padding:32px 40px 40px;
}
.art-cover{margin:0 0 30px;}
.art-cover img{
  width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--rk-r-card);
  background:#E9EEF6;
}
.article-body{font-size:17px;line-height:1.9;color:var(--rk-ink);word-break:break-word;}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 1.2em;}
.article-body h2{
  position:relative;font-size:22px;line-height:1.45;font-weight:700;
  margin:1.9em 0 .85em;padding-left:15px;color:var(--rk-ink);scroll-margin-top:96px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:4px;border-radius:2px;
  background:var(--rk-cyan);
}
.article-body h3{font-size:18px;line-height:1.55;font-weight:600;margin:1.6em 0 .6em;color:var(--rk-ink);}
.article-body h4{font-size:16px;font-weight:600;margin:1.3em 0 .5em;}
.article-body ul,.article-body ol{padding-left:1.4em;margin:0 0 1.2em;}
.article-body ul{list-style:disc;}
.article-body ol{list-style:decimal;}
.article-body li{margin:.42em 0;}
.article-body li::marker{color:var(--rk-cyan-deep);}
.article-body img{border-radius:14px;margin:1.5em auto;background:#E9EEF6;height:auto;}
.article-body blockquote{
  margin:1.5em 0;padding:16px 22px;background:#EAF8F4;
  border-left:4px solid var(--rk-cyan-deep);border-radius:12px;color:#1D4450;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body a{color:var(--rk-cyan-deep);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:#00806a;}
.article-body hr{border:0;height:1px;background:var(--rk-line);margin:2em 0;}
.article-body table{width:100%;border-collapse:separate;border-spacing:0;margin:1.5em 0;font-size:15px;border:1px solid var(--rk-line);border-radius:14px;overflow:hidden;}
.article-body th{background:#0F2136;color:#fff;text-align:left;font-weight:600;padding:12px 16px;font-size:14px;}
.article-body td{padding:12px 16px;border-top:1px solid var(--rk-line);color:var(--rk-ink-2);}
.article-body tbody tr:nth-child(even) td{background:#F8FAFD;}
.article-body code{background:#F1F4F9;border:1px solid var(--rk-line);border-radius:6px;padding:1px 6px;font-size:14px;}
.article-body strong{font-weight:700;}

/* ---------- side toc ---------- */
.art-side{position:sticky;top:92px;}
.toc-card{
  background:#fff;border:1px solid var(--rk-line);border-radius:16px;
  padding:18px 18px 14px;box-shadow:var(--rk-sh-card);
}
.toc-title{font-size:15px;font-weight:700;color:var(--rk-ink);margin-bottom:10px;}
.toc-list{margin:0;padding:0;}
.toc-list a{
  display:block;padding:7px 0 7px 12px;font-size:14px;line-height:1.6;color:var(--rk-ink-2);
  border-left:2px solid #E9EEF6;transition:color .2s var(--rk-ease),border-color .2s var(--rk-ease);
}
.toc-list a:hover{color:var(--rk-cyan-deep);}
.toc-list a.on{color:var(--rk-cyan-deep);border-left-color:var(--rk-cyan);font-weight:600;}
.toc-empty{font-size:13px;color:var(--rk-ink-3);padding:6px 0;}

/* ---------- tags / back ---------- */
.art-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:38px;padding-top:26px;border-top:1px solid var(--rk-line);}
.tag{
  display:inline-flex;align-items:center;height:30px;padding:0 15px;border-radius:999px;
  background:#F1F4F9;border:1px solid var(--rk-line);font-size:13px;color:var(--rk-ink-2);
  transition:background .2s var(--rk-ease),color .2s var(--rk-ease),border-color .2s var(--rk-ease);
}
.tag:hover{background:rgba(0,227,176,.10);border-color:rgba(0,163,130,.4);color:var(--rk-cyan-deep);}
.art-back{margin-top:26px;}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 24px;
  border-radius:var(--rk-r-ctl);border:1px solid rgba(0,163,130,.45);color:var(--rk-cyan-deep);
  background:transparent;font-weight:600;font-size:15px;cursor:pointer;
  transition:background .22s var(--rk-ease),transform .22s var(--rk-ease),color .22s var(--rk-ease);
}
.btn-ghost:hover{background:rgba(0,227,176,.10);color:#00806a;transform:translateY(-2px);}
.btn-ghost.on-dark{border-color:rgba(255,255,255,.28);color:var(--rk-light-text);}
.btn-ghost.on-dark:hover{background:rgba(255,255,255,.10);color:#fff;}

/* ---------- empty ---------- */
.art-empty{text-align:center;padding:48px 12px 56px;}
.art-empty svg{margin:0 auto 18px;}
.art-empty h2{font-size:22px;font-weight:700;margin-bottom:10px;}
.art-empty p{color:var(--rk-ink-2);font-size:15px;margin-bottom:24px;}

/* ---------- related ---------- */
.rel-sec{background:#fff;border-top:1px solid var(--rk-line);padding:70px 0 84px;}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px;flex-wrap:wrap;}
.sec-head h2{font-size:clamp(22px,2.4vw,30px);font-weight:700;letter-spacing:-.01em;}
.link-more{font-size:14px;color:var(--rk-cyan-deep);font-weight:600;transition:color .2s var(--rk-ease);}
.link-more:hover{color:#00806a;}
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.post-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--rk-line);
  border-radius:var(--rk-r-card);overflow:hidden;box-shadow:var(--rk-sh-card);
  transition:transform .22s var(--rk-ease),box-shadow .22s var(--rk-ease),border-color .22s var(--rk-ease);
}
.post-card:hover{transform:translateY(-4px);box-shadow:0 18px 40px rgba(15,35,70,.14);border-color:#D8E2EE;}
.post-thumb{aspect-ratio:16/10;overflow:hidden;background:#E9EEF6;}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--rk-ease);}
.post-card:hover .post-thumb img{transform:scale(1.04);}
.post-body{padding:20px 20px 22px;display:flex;flex-direction:column;flex:1 1 auto;}
.post-body .badge-cat{align-self:flex-start;margin-bottom:12px;}
.post-title{font-size:17px;font-weight:700;line-height:1.55;color:var(--rk-ink);margin-bottom:8px;transition:color .2s var(--rk-ease);}
.post-card:hover .post-title{color:var(--rk-cyan-deep);}
.post-desc{font-size:14px;line-height:1.75;color:var(--rk-ink-2);margin-bottom:18px;flex:1 1 auto;}
.post-foot{display:flex;align-items:center;justify-content:space-between;color:var(--rk-ink-3);}
.post-foot .arrow{color:var(--rk-cyan-deep);font-weight:700;transition:transform .22s var(--rk-ease);}
.post-card:hover .post-foot .arrow{transform:translateX(4px);}

/* ---------- end cta ---------- */
.end-cta{position:relative;overflow:hidden;background:linear-gradient(120deg,#071322,#0A1A2F 58%,#071322);padding:66px 0;}
.end-cta::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;opacity:.24;
}
.end-cta::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(7,19,34,.94),rgba(10,26,47,.72));
}
.end-cta .rk-container{position:relative;z-index:2;}
.end-cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
.end-cta h2{font-size:clamp(22px,2.4vw,30px);font-weight:700;color:#fff;margin-bottom:10px;letter-spacing:-.01em;}
.end-cta p{color:var(--rk-light-dim);font-size:15px;max-width:56ch;}
.end-cta-acts{display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- sticky bottom ---------- */
.sticky-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:1040;
  background:rgba(7,19,34,.94);
  -webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
  border-top:1px solid rgba(0,227,176,.30);
  transform:translateY(110%);
  transition:transform .3s var(--rk-ease);
  padding-bottom:env(safe-area-inset-bottom);
}
.sticky-cta.show{transform:none;}
.sticky-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:64px;padding-top:8px;padding-bottom:8px;}
.sticky-text{color:var(--rk-light-text);font-size:14px;display:flex;align-items:center;gap:10px;}
.sticky-text .pulse{width:8px;height:8px;border-radius:50%;background:var(--rk-cyan);box-shadow:0 0 0 4px rgba(0,227,176,.18);flex:0 0 auto;}
.sticky-acts{display:flex;align-items:center;gap:12px;}
.sticky-acts .btn-ghost{height:42px;padding:0 20px;font-size:14px;}
.sticky-acts .btn-glow{height:42px;padding:0 24px;font-size:14px;}

/* ---------- footer ---------- */
.site-footer{background:#071322;color:var(--rk-light-dim);padding:64px 0 26px;position:relative;}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(0,227,176,.55),transparent);
}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.foot-brand span{font-size:16px;font-weight:700;color:#fff;}
.foot-desc{font-size:14px;line-height:1.8;color:var(--rk-light-dim);max-width:34ch;}
.foot-col h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px;}
.foot-col ul li{margin-bottom:10px;}
.foot-col ul a{font-size:14px;color:var(--rk-light-dim);transition:color .2s var(--rk-ease);}
.foot-col ul a:hover{color:var(--rk-cyan);}
.foot-contact{font-size:14px;line-height:1.9;color:var(--rk-light-dim);}
.foot-contact b{color:#C9D8EA;font-weight:600;}
.foot-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.08);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
}
.foot-bottom p{font-size:13px;color:#7B8FA8;}
.foot-bottom .mono{color:#5E7391;letter-spacing:.06em;}

/* ---------- responsive ---------- */
@media(max-width:1199px){
  .art-grid{grid-template-columns:minmax(0,840px);}
  .art-side{display:none;}
}
@media(max-width:991px){
  body{padding-bottom:72px;}
  .nav-inner{height:56px;gap:12px;}
  .nav-links{
    position:fixed;top:56px;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:2px;
    background:#fff;padding:14px 20px 22px;margin:0;
    box-shadow:0 22px 44px rgba(16,42,80,.14);
    max-height:calc(100vh - 56px);overflow-y:auto;
    transform:translateY(-12px);opacity:0;visibility:hidden;
    transition:transform .24s var(--rk-ease),opacity .24s var(--rk-ease),visibility .24s;
  }
  .nav-links.open{transform:none;opacity:1;visibility:visible;}
  .nav-links a{padding:13px 6px;font-size:16px;border-bottom:1px solid #EEF2F7;border-radius:0;}
  .nav-links a.active::after{display:none;}
  .nav-links a.active{color:var(--rk-cyan-deep);}
  .nav-search{display:none;}
  .nav-toggle{display:flex;}
  .art-head{padding:34px 0 22px;}
  .art-card{padding:24px 22px 30px;border-radius:16px;}
  .rel-grid{grid-template-columns:repeat(2,1fr);gap:18px;}
  .foot-grid{grid-template-columns:repeat(2,1fr);gap:30px;}
  .sticky-cta{transform:none;}
  .sticky-cta:not(.show){transform:none;}
  .sticky-text{display:none;}
  .sticky-acts{width:100%;}
  .sticky-acts .btn-ghost{flex:0 0 34%;}
  .sticky-acts .btn-glow{flex:1 1 auto;}
}
@media(max-width:767px){
  .rk-container{padding:0 16px;}
  .article-body{font-size:16px;}
  .article-body h2{font-size:20px;}
  .end-cta{padding:52px 0;}
  .rel-sec{padding:54px 0 64px;}
  .sec-head{margin-bottom:24px;}
}
@media(max-width:575px){
  .brand-text{font-size:14px;}
  .brand svg{width:28px;height:28px;}
  .btn-nav{height:36px;padding:0 13px;font-size:13px;}
  .nav-right{gap:8px;}
  .art-title{max-width:none;}
  .art-card{padding:18px 16px 24px;}
  .rel-grid{grid-template-columns:1fr;}
  .foot-grid{grid-template-columns:1fr;}
  .end-cta-acts{width:100%;}
  .end-cta-acts .btn-glow,.end-cta-acts .btn-ghost{flex:1 1 auto;}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;}
}

/* roulang page: category3 */
:root{
  --rk-dark-1:#071322;
  --rk-dark-2:#0A1A2F;
  --rk-cyan:#00E3B0;
  --rk-cyan-hover:#22FFC6;
  --rk-cyan-deep:#00A382;
  --rk-orange:#FF6A35;
  --rk-text-light:#EAF2FF;
  --rk-text-mid:#9CB0C9;
  --rk-text-dim:#6B7F99;
  --rk-light-bg:#F5F7FB;
  --rk-card:#FFFFFF;
  --rk-border:#E6EBF2;
  --rk-body:#0F2136;
  --rk-muted:#4B5F78;
  --rk-surface-alt:#EEF2F8;
  --r-card:18px;
  --r-big:22px;
  --r-btn:12px;
  --r-pill:999px;
  --shadow-light:0 10px 30px rgba(15,35,70,.08);
  --shadow-dark:0 18px 40px rgba(0,10,30,.45);
  --font-sans:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  --font-mono:ui-monospace,"DIN Alternate","SFMono-Regular",Menlo,monospace;
  --bs-primary:#00A382;
  --bs-primary-rgb:0,163,130;
  --bs-body-bg:#F5F7FB;
  --bs-body-color:#0F2136;
  --bs-border-radius:12px;
  --bs-border-color:#E6EBF2;
  --bs-link-color:#00A382;
  --bs-link-hover-color:#00E3B0;
  --bs-font-sans-serif:var(--font-sans);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  color:var(--rk-body);
  background:var(--rk-light-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit;transition:color .22s cubic-bezier(.22,.61,.36,1)}
button,input{font-family:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;color:inherit;letter-spacing:.005em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--rk-cyan);outline-offset:2px;border-radius:6px}
.mono{font-family:var(--font-mono);letter-spacing:.04em;font-size:15px}

/* ---------- 容器 ---------- */
.rk-container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ---------- 白底导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1040;
  background:#fff;
  border-bottom:1px solid var(--rk-border);
  box-shadow:0 2px 12px rgba(16,42,80,.06);
}
.nav-inner{
  height:68px;display:flex;align-items:center;gap:22px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-text{
  font-size:16px;font-weight:700;color:var(--rk-body);white-space:nowrap;
  letter-spacing:.01em;
}
.brand:hover .brand-text{color:var(--rk-cyan-deep)}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:8px;flex:1 1 auto}
.nav-links a{
  position:relative;display:inline-block;
  padding:8px 12px;font-size:15px;color:#33465E;border-radius:10px;
  white-space:nowrap;
}
.nav-links a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--rk-cyan);transform:scaleX(0);transform-origin:left;
  transition:transform .22s cubic-bezier(.22,.61,.36,1);
}
.nav-links a:hover{color:var(--rk-cyan-deep);background:#F5F9FF}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.active{color:var(--rk-cyan-deep);font-weight:700}
.nav-links a.active::after{transform:scaleX(1)}
.nav-right{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.nav-search{
  display:flex;align-items:center;gap:8px;
  background:#F1F4F9;border:1px solid transparent;border-radius:999px;
  padding:0 14px;height:42px;width:210px;
  transition:border-color .22s,box-shadow .22s,background .22s;
}
.nav-search input{
  border:0;background:transparent;outline:none;width:100%;
  font-size:14px;color:var(--rk-body);
}
.nav-search input::placeholder{color:#8798AE}
.nav-search:focus-within{
  background:#fff;border-color:var(--rk-cyan);
  box-shadow:0 0 0 4px rgba(0,227,176,.16);
}
.btn-glow{
  position:relative;overflow:hidden;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--rk-cyan) 0%,var(--rk-cyan-deep) 100%);
  color:#04241D;font-weight:700;font-size:15px;
  border:0;border-radius:var(--r-btn);
  padding:0 20px;height:44px;
  box-shadow:0 0 0 1px rgba(0,227,176,.45),0 10px 28px rgba(0,227,176,.25);
  transition:transform .22s cubic-bezier(.22,.61,.36,1),box-shadow .22s,color .22s;
  cursor:pointer;
}
.btn-glow::after{
  content:"";position:absolute;top:0;left:-70%;width:38%;height:100%;
  background:linear-gradient(105deg,transparent,rgba(255,255,255,.6),transparent);
  transform:skewX(-18deg);transition:left .55s ease;pointer-events:none;
}
.btn-glow:hover{color:#02211B;transform:translateY(-2px);box-shadow:0 0 0 1px rgba(34,255,198,.6),0 16px 34px rgba(0,227,176,.34)}
.btn-glow:hover::after{left:130%}
.btn-nav{height:42px;padding:0 18px;font-size:14px}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--rk-border);background:#F1F4F9;position:relative;cursor:pointer;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";position:absolute;left:11px;width:20px;height:2px;background:#33465E;border-radius:2px;
  transition:transform .22s,opacity .22s;
}
.nav-toggle span{top:20px}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-toggle.open span{background:transparent}
.nav-toggle.open span::before{transform:translateY(6px) rotate(45deg)}
.nav-toggle.open span::after{transform:translateY(-6px) rotate(-45deg)}

/* ---------- 深色首屏 ---------- */
.hero{
  position:relative;overflow:hidden;
  background:var(--rk-dark-1);
  min-height:560px;
  display:flex;align-items:center;
  padding:76px 0 84px;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  opacity:.5;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(120deg,rgba(7,19,34,.96) 0%,rgba(7,19,34,.86) 46%,rgba(10,26,47,.72) 100%);
}
.hero .grid-veil{
  position:absolute;inset:0;pointer-events:none;
  background-image:
    repeating-linear-gradient(0deg,rgba(255,255,255,.03) 0 1px,transparent 1px 64px),
    repeating-linear-gradient(90deg,rgba(255,255,255,.03) 0 1px,transparent 1px 64px);
}
.hero .arc-veil{
  position:absolute;right:-140px;top:-120px;width:620px;height:620px;border-radius:50%;
  border:1px solid rgba(0,227,176,.22);pointer-events:none;
}
.hero .arc-veil.two{right:-40px;top:60px;width:420px;height:420px;border-color:rgba(255,106,53,.16)}
.hero .band-line{
  position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(0,227,176,.7),transparent);
}
.hero-grid{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1.08fr .92fr;gap:48px;align-items:center;
}
.kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:13px;letter-spacing:.08em;
  color:var(--rk-cyan);
  background:rgba(0,227,176,.08);
  border:1px solid rgba(0,227,176,.28);
  border-radius:999px;padding:5px 14px;margin-bottom:20px;
}
.hero h1{
  font-size:clamp(28px,4.4vw,46px);line-height:1.25;font-weight:700;
  color:var(--rk-text-light);
}
.hero h1 em{font-style:normal;color:var(--rk-cyan)}
.hero-sub{
  margin-top:18px;font-size:16px;line-height:1.85;color:var(--rk-text-mid);max-width:520px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.btn-lg-rk{height:52px;padding:0 26px;font-size:16px;border-radius:var(--r-btn)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;
  height:52px;padding:0 24px;font-size:16px;font-weight:600;
  color:var(--rk-text-light);
  background:rgba(255,255,255,.055);
  border:1px solid rgba(255,255,255,.18);
  border-radius:var(--r-btn);
  backdrop-filter:blur(16px);
  transition:transform .22s cubic-bezier(.22,.61,.36,1),border-color .22s,background .22s;
}
.btn-ghost:hover{transform:translateY(-2px);border-color:rgba(0,227,176,.6);background:rgba(0,227,176,.1);color:#fff}
.trust-row{
  display:flex;flex-wrap:wrap;gap:28px;margin-top:36px;
  padding-top:24px;border-top:1px solid rgba(255,255,255,.09);
}
.trust-row li b{
  display:block;font-family:var(--font-mono);font-size:26px;line-height:1.2;
  color:var(--rk-cyan);letter-spacing:.04em;
}
.trust-row li span{font-size:13px;color:var(--rk-text-dim)}

/* 首屏玻璃面板 */
.hero-panel{
  position:relative;
  background:rgba(255,255,255,.055);
  border:1px solid rgba(255,255,255,.12);
  border-radius:var(--r-big);
  backdrop-filter:blur(16px);
  padding:26px;
  box-shadow:var(--shadow-dark),0 0 60px rgba(0,227,176,.14);
}
.panel-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.panel-dots{display:flex;gap:7px}
.panel-dots i{width:9px;height:9px;border-radius:50%;background:rgba(255,255,255,.2);display:block}
.panel-dots i:first-child{background:var(--rk-orange)}
.panel-dots i:nth-child(2){background:var(--rk-cyan)}
.panel-head h2{font-size:15px;font-weight:600;color:var(--rk-text-light)}
.status-list{display:flex;flex-direction:column;gap:12px}
.status-item{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  background:rgba(7,19,34,.55);
  border:1px solid rgba(255,255,255,.08);
  border-radius:14px;padding:14px 16px;
}
.status-item .si-label{font-size:14px;color:var(--rk-text-mid)}
.status-item .si-val{font-family:var(--font-mono);font-size:15px;color:var(--rk-text-light);letter-spacing:.04em}
.tag-ok{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;color:var(--rk-cyan);
  border:1px solid rgba(0,227,176,.45);border-radius:999px;padding:3px 12px;
}
.tag-warn{
  display:inline-flex;align-items:center;gap:6px;
  font-size:13px;color:var(--rk-orange);
  border:1px solid rgba(255,106,53,.45);border-radius:999px;padding:3px 12px;
}
.panel-foot{margin-top:20px}
.panel-foot .btn-glow{width:100%;height:48px}
.panel-note{margin-top:12px;font-size:13px;color:var(--rk-text-dim);text-align:center}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0}
.section.alt{background:linear-gradient(180deg,#FFFFFF 0%,var(--rk-light-bg) 100%)}
.section.dark{
  position:relative;background:var(--rk-dark-1);color:var(--rk-text-light);overflow:hidden;
}
.section.dark::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-3.png');
  background-size:cover;background-position:center;opacity:.34;
}
.section.dark::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(150deg,rgba(7,19,34,.95),rgba(10,26,47,.88));
}
.section.dark > .rk-container{position:relative;z-index:2}
.section-head{max-width:760px;margin-bottom:44px}
.section-head.mid{margin-left:auto;margin-right:auto;text-align:center}
.s-title{
  position:relative;font-size:clamp(22px,2.6vw,32px);line-height:1.35;
  padding-left:16px;
}
.s-title::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:3px;
  background:linear-gradient(180deg,var(--rk-cyan),var(--rk-cyan-deep));
}
.section.dark .s-title::before{background:linear-gradient(180deg,var(--rk-cyan),rgba(0,227,176,.2))}
.s-desc{margin-top:14px;font-size:16px;color:var(--rk-muted);padding-left:16px}
.section.dark .s-desc{color:var(--rk-text-mid)}

/* ---------- 纵向步骤时间轴 ---------- */
.steps{margin-top:8px}
.step{
  position:relative;display:grid;grid-template-columns:76px 1fr;gap:26px;
  padding-bottom:52px;
}
.step:last-child{padding-bottom:0}
.step::before{
  content:"";position:absolute;left:37px;top:80px;bottom:6px;width:2px;
  background:linear-gradient(180deg,rgba(0,227,176,.55),rgba(0,227,176,.06));
}
.step:last-child::before{display:none}
.step-no{
  width:76px;height:76px;border-radius:20px;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-mono);font-size:22px;font-weight:600;letter-spacing:.04em;
  color:var(--rk-cyan-deep);
  background:#fff;border:1px solid var(--rk-border);
  box-shadow:var(--shadow-light);
}
.step-body{
  background:#fff;border:1px solid var(--rk-border);border-radius:var(--r-card);
  padding:26px 28px;box-shadow:var(--shadow-light);
  transition:transform .22s cubic-bezier(.22,.61,.36,1),box-shadow .22s;
}
.step-body:hover{transform:translateY(-4px);box-shadow:0 18px 40px rgba(15,35,70,.12)}
.step-body h3{font-size:20px;line-height:1.5;font-weight:600;display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.step-chip{
  font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;
  color:var(--rk-cyan-deep);border:1px solid rgba(0,227,176,.5);
  background:rgba(0,227,176,.08);border-radius:999px;padding:2px 10px;
}
.step-body p{margin-top:12px;font-size:15.5px;color:var(--rk-muted)}
.step-media{
  margin-top:20px;border-radius:var(--r-big);overflow:hidden;
  background:#E9EEF6;aspect-ratio:16/9;
}
.step-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s cubic-bezier(.22,.61,.36,1)}
.step-media:hover img{transform:scale(1.02)}

/* ---------- 两栏清单 ---------- */
.guard-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:8px}
.guard-card{
  background:#fff;border:1px solid var(--rk-border);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--shadow-light);
}
.guard-card.no{background:#FBFCFE}
.guard-card h3{font-size:19px;display:flex;align-items:center;gap:10px}
.guard-card h3 .dot{
  width:10px;height:10px;border-radius:50%;background:var(--rk-cyan);display:inline-block;
}
.guard-card.no h3 .dot{background:var(--rk-orange)}
.guard-list{margin-top:20px;display:flex;flex-direction:column;gap:14px}
.guard-list li{display:flex;gap:12px;font-size:15.5px;color:var(--rk-muted);line-height:1.75}
.guard-list li i{
  flex:0 0 auto;width:22px;height:22px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;margin-top:5px;
  font-style:normal;font-size:12px;font-weight:700;
}
.guard-list.ok li i{background:rgba(0,227,176,.14);color:var(--rk-cyan-deep);border:1px solid rgba(0,227,176,.4)}
.guard-list.bad li i{background:rgba(255,106,53,.12);color:#C2451A;border:1px solid rgba(255,106,53,.38)}

/* ---------- 数据条 + 评价 ---------- */
.stats-band{
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.12);border-radius:var(--r-card);
  overflow:hidden;backdrop-filter:blur(16px);
  margin-bottom:44px;
}
.stat-item{background:rgba(255,255,255,.055);padding:28px 22px;text-align:center}
.stat-item b{
  display:block;font-family:var(--font-mono);font-size:36px;line-height:1.15;
  color:var(--rk-cyan);letter-spacing:.04em;
}
.stat-item span{display:block;margin-top:8px;font-size:13px;color:var(--rk-text-mid)}
.voice-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.voice-card{
  background:rgba(255,255,255,.055);
  border:1px solid rgba(255,255,255,.12);
  border-radius:var(--r-card);padding:26px;
  backdrop-filter:blur(16px);
  transition:transform .22s cubic-bezier(.22,.61,.36,1),box-shadow .22s,border-color .22s;
}
.voice-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-dark);border-color:rgba(0,227,176,.4)}
.voice-card:nth-child(2){margin-top:24px}
.voice-top{display:flex;align-items:center;gap:14px}
.avatar{
  width:46px;height:46px;border-radius:50%;flex:0 0 auto;
  background:linear-gradient(140deg,rgba(0,227,176,.5),rgba(255,106,53,.35));
  border:1px solid rgba(255,255,255,.2);
}
.voice-top .nick{font-size:15px;color:var(--rk-text-light);font-weight:600}
.voice-top .role{font-size:13px;color:var(--rk-text-dim)}
.voice-card p{margin-top:16px;font-size:15px;color:var(--rk-text-mid)}
.stars{display:flex;gap:4px;margin-top:16px}
.stars svg{width:16px;height:16px}

/* ---------- FAQ ---------- */
.faq{margin-top:8px;max-width:900px}
.acc-rk .accordion-item{
  background:#fff;border:1px solid var(--rk-border);border-radius:16px;
  margin-bottom:14px;overflow:hidden;box-shadow:var(--shadow-light);
  --bs-accordion-border-width:0;
}
.acc-rk .accordion-button{
  gap:14px;padding:20px 24px;font-size:16.5px;font-weight:600;color:var(--rk-body);
  background:#fff;box-shadow:none;border-radius:16px;
}
.acc-rk .accordion-button::before{
  content:"?";flex:0 0 auto;
  width:28px;height:28px;border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;
  font-family:var(--font-mono);font-size:14px;font-weight:700;
  color:var(--rk-cyan-deep);background:rgba(0,227,176,.12);border:1px solid rgba(0,227,176,.42);
}
.acc-rk .accordion-button::after{
  background-image:none;content:"+";
  width:auto;height:auto;font-family:var(--font-mono);font-size:20px;line-height:1;
  color:var(--rk-muted);margin-left:auto;display:flex;align-items:center;justify-content:center;
  transition:transform .22s,color .22s;
}
.acc-rk .accordion-button:not(.collapsed){
  color:var(--rk-cyan-deep);background:#fff;
  box-shadow:inset 4px 0 0 var(--rk-cyan);
}
.acc-rk .accordion-button:not(.collapsed)::after{content:"−";color:var(--rk-cyan-deep)}
.acc-rk .accordion-button:focus{box-shadow:none;outline:2px solid var(--rk-cyan);outline-offset:-3px}
.acc-rk .accordion-body{
  padding:0 24px 22px 66px;font-size:15.5px;color:var(--rk-muted);line-height:1.85;
}

/* ---------- 结尾 CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--rk-dark-2);
  border:1px solid rgba(0,227,176,.24);
  border-radius:var(--r-big);
  padding:48px 44px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  box-shadow:0 24px 60px rgba(0,10,30,.35);
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(600px 240px at 88% 10%,rgba(0,227,176,.18),transparent 70%),
    linear-gradient(120deg,rgba(7,19,34,.4),rgba(10,26,47,.1));
}
.cta-band > *{position:relative;z-index:2}
.cta-band h2{font-size:clamp(20px,2.4vw,28px);color:var(--rk-text-light);line-height:1.4}
.cta-band p{margin-top:12px;font-size:15.5px;color:var(--rk-text-mid);max-width:560px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--rk-dark-1);color:var(--rk-text-mid);padding:64px 0 28px;position:relative}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(0,227,176,.55),transparent);
}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.foot-brand span{font-size:16px;font-weight:700;color:var(--rk-text-light)}
.foot-desc{font-size:14.5px;line-height:1.85;color:var(--rk-text-dim);max-width:340px}
.foot-col h4{font-size:15px;font-weight:700;color:var(--rk-text-light);margin-bottom:18px}
.foot-col ul{display:flex;flex-direction:column;gap:12px}
.foot-col a{font-size:14.5px;color:var(--rk-text-dim)}
.foot-col a:hover{color:var(--rk-cyan)}
.foot-contact{font-size:14.5px;line-height:2;color:var(--rk-text-dim)}
.foot-contact b{color:#C4D4E6;font-weight:600}
.foot-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.08);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13.5px;color:var(--rk-text-dim);
}
.foot-bottom .mono{color:#58708C}

/* ---------- 底部固定转化条 ---------- */
.sticky-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:1050;
  background:rgba(7,19,34,.9);
  backdrop-filter:blur(16px);
  border-top:1px solid rgba(0,227,176,.22);
  transform:translateY(120%);
  transition:transform .3s cubic-bezier(.22,.61,.36,1);
  padding-bottom:env(safe-area-inset-bottom);
}
.sticky-cta.show{transform:translateY(0)}
.stc-inner{
  max-width:1200px;margin:0 auto;padding:10px 24px;
  display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:64px;
}
.stc-text{font-size:14.5px;color:var(--rk-text-mid)}
.stc-text b{color:var(--rk-text-light);font-weight:600}
.stc-actions{display:flex;gap:12px;align-items:center}
.stc-actions .btn-glow{height:44px}
.stc-actions .btn-ghost{height:44px;font-size:15px;padding:0 20px}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .hero-grid{gap:36px}
  .nav-search{width:180px}
}
@media (max-width:991px){
  .nav-inner{height:64px;gap:14px}
  .nav-search{display:none}
  .nav-toggle{display:block}
  .nav-links{
    position:fixed;top:64px;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:2px;
    background:#fff;padding:14px 16px 22px;
    border-bottom:1px solid var(--rk-border);
    box-shadow:0 18px 30px rgba(16,42,80,.12);
    transform:translateY(-14px);opacity:0;pointer-events:none;
    transition:transform .24s cubic-bezier(.22,.61,.36,1),opacity .24s;
    max-height:calc(100vh - 64px);overflow-y:auto;
    margin-left:0;
  }
  .nav-links.open{transform:translateY(0);opacity:1;pointer-events:auto}
  .nav-links a{padding:13px 12px;font-size:15.5px;border-radius:12px}
  .nav-links a::after{display:none}
  .nav-links a.active{background:#F2FBF8}
  .hero{min-height:auto;padding:60px 0 70px}
  .hero-grid{grid-template-columns:1fr;gap:34px}
  .hero-panel{max-width:560px}
  .section{padding:64px 0}
  .guard-grid{grid-template-columns:1fr}
  .stats-band{grid-template-columns:1fr 1fr}
  .voice-grid{grid-template-columns:1fr}
  .voice-card:nth-child(2){margin-top:0}
  .foot-grid{grid-template-columns:1fr 1fr;gap:30px}
  .cta-band{padding:38px 28px}
  .btn-nav{display:none}
}
@media (max-width:767px){
  .rk-container{padding:0 16px}
  body{padding-bottom:calc(74px + env(safe-area-inset-bottom))}
  .hero{padding:52px 0 60px}
  .hero h1{font-size:clamp(25px,7vw,32px)}
  .hero-sub{max-width:none}
  .btn-lg-rk,.btn-ghost{height:48px;font-size:15px;padding:0 20px}
  .trust-row{gap:20px}
  .trust-row li b{font-size:22px}
  .step{grid-template-columns:48px 1fr;gap:16px;padding-bottom:40px}
  .step::before{left:23px;top:58px}
  .step-no{width:48px;height:48px;border-radius:14px;font-size:17px}
  .step-body{padding:20px}
  .step-body h3{font-size:18px}
  .acc-rk .accordion-body{padding:0 20px 20px 22px}
  .acc-rk .accordion-button{padding:17px 18px;font-size:15.5px}
  .cta-band{padding:30px 22px}
  .cta-actions{width:100%}
  .cta-actions .btn-glow,.cta-actions .btn-ghost{width:100%}
  .stc-inner{padding:8px 16px;gap:10px}
  .stc-actions .btn-glow{flex:0 0 62%;height:46px}
  .stc-actions .btn-ghost{flex:1 1 auto;height:46px;padding:0 14px}
  .stc-text{display:none}
  .foot-grid{grid-template-columns:1fr;gap:26px}
  .foot-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .section{padding:48px 0}
}
@media (max-width:575px){
  .stats-band{grid-template-columns:1fr}
  .stat-item b{font-size:30px}
  .guard-card{padding:22px}
  .hero-actions{gap:10px}
  .hero-actions .btn-glow,.hero-actions .btn-ghost{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important}
}

/* roulang page: category2 */
:root{
  --rk-dark-900:#071322;
  --rk-dark-800:#0A1A2F;
  --rk-dark-700:#0E2138;
  --rk-glass:rgba(255,255,255,.055);
  --rk-glass-line:rgba(255,255,255,.12);
  --rk-cyan:#00E3B0;
  --rk-cyan-hover:#22FFC6;
  --rk-cyan-deep:#00A382;
  --rk-orange:#FF6A35;
  --rk-text-d:#EAF2FF;
  --rk-text-d2:#9CB0C9;
  --rk-text-d3:#6B7F99;
  --rk-bg:#F5F7FB;
  --rk-card:#FFFFFF;
  --rk-line:#E6EBF2;
  --rk-text:#0F2136;
  --rk-text2:#4B5F78;
  --rk-mute:#8798AE;
  --rk-r-card:18px;
  --rk-r-img:22px;
  --rk-r-btn:12px;
  --rk-r-pill:999px;
  --rk-shadow-l:0 10px 30px rgba(15,35,70,.08);
  --rk-shadow-l2:0 2px 10px rgba(16,42,80,.06);
  --rk-shadow-d:0 18px 40px rgba(0,10,30,.45);
  --rk-ease:cubic-bezier(.22,.61,.36,1);
  --bs-primary:#00A382;
  --bs-primary-rgb:0,163,130;
  --bs-body-bg:#F5F7FB;
  --bs-body-color:#0F2136;
  --bs-border-color:#E6EBF2;
  --bs-border-radius:12px;
  --bs-link-color:#0F2136;
  --bs-link-hover-color:#00A382;
  --bs-font-sans-serif:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--rk-text);
  background:var(--rk-bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .22s var(--rk-ease)}
ul{margin:0;padding:0;list-style:none}
p{margin:0}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em}
button{font:inherit}
:focus-visible{outline:2px solid var(--rk-cyan);outline-offset:3px;border-radius:6px}
.mono{font-family:ui-monospace,"DIN Alternate","SFMono-Regular",Consolas,monospace;letter-spacing:.04em;font-size:calc(1em - 1px)}
.rk-container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ============ 按钮 ============ */
.btn-glow{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--rk-r-btn);border:0;
  background:linear-gradient(135deg,#00E3B0,#00A382);
  color:#04231B;font-weight:700;font-size:15px;line-height:1.2;
  box-shadow:0 0 0 1px rgba(0,227,176,.45),0 10px 28px rgba(0,227,176,.25);
  position:relative;overflow:hidden;
  transition:transform .22s var(--rk-ease),box-shadow .22s var(--rk-ease),background .22s var(--rk-ease);
}
.btn-glow::after{
  content:"";position:absolute;top:-60%;left:-40%;width:40%;height:220%;
  background:linear-gradient(90deg,rgba(255,255,255,0),rgba(255,255,255,.55),rgba(255,255,255,0));
  transform:translateX(-160%) rotate(18deg);transition:transform .6s var(--rk-ease);
}
.btn-glow:hover{transform:translateY(-2px);box-shadow:0 0 0 1px rgba(34,255,198,.6),0 14px 34px rgba(0,227,176,.34);color:#04231B}
.btn-glow:hover::after{transform:translateX(320%) rotate(18deg)}
.btn-glow:active{transform:translateY(0)}
.btn-outline{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--rk-r-btn);font-weight:600;font-size:15px;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.22);color:var(--rk-text-d);
  transition:transform .22s var(--rk-ease),border-color .22s var(--rk-ease),background .22s var(--rk-ease),color .22s var(--rk-ease);
}
.btn-outline:hover{transform:translateY(-2px);border-color:rgba(0,227,176,.65);color:var(--rk-cyan-hover);background:rgba(0,227,176,.08)}
.btn-outline-light{
  background:#fff;border:1px solid var(--rk-line);color:var(--rk-text);
  box-shadow:var(--rk-shadow-l2);
}
.btn-outline-light:hover{border-color:var(--rk-cyan-deep);color:var(--rk-cyan-deep);background:#fff}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1200;
  background:#fff;border-bottom:1px solid var(--rk-line);
  box-shadow:0 2px 12px rgba(16,42,80,.06);
}
.nav-inner{display:flex;align-items:center;gap:28px;height:68px}
.brand{display:flex;align-items:center;gap:10px;flex:none}
.brand-text{font-size:17px;font-weight:700;color:var(--rk-text);letter-spacing:-.02em;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:26px;height:100%;margin-left:6px}
.nav-links a{
  position:relative;display:flex;align-items:center;height:68px;
  font-size:15px;color:var(--rk-text2);
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
  background:linear-gradient(90deg,#00E3B0,#00A382);transform:scaleX(0);transform-origin:left;
  transition:transform .22s var(--rk-ease);
}
.nav-links a:hover{color:var(--rk-text)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.active{color:var(--rk-text);font-weight:700}
.nav-links a.active::after{transform:scaleX(1)}
.nav-right{display:flex;align-items:center;gap:14px;margin-left:auto;flex:none}
.nav-search{
  display:flex;align-items:center;gap:8px;height:40px;width:206px;
  padding:0 14px;border-radius:var(--rk-r-pill);
  background:#F1F4F9;border:1px solid transparent;
  transition:border-color .22s var(--rk-ease),box-shadow .22s var(--rk-ease),background .22s var(--rk-ease);
}
.nav-search input{
  border:0;background:transparent;outline:none;width:100%;
  font-size:14px;color:var(--rk-text);
}
.nav-search input::placeholder{color:var(--rk-mute)}
.nav-search:focus-within{background:#fff;border-color:var(--rk-cyan-deep);box-shadow:0 0 0 4px rgba(0,227,176,.16)}
.btn-nav{padding:10px 18px;font-size:14px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--rk-line);
  background:#fff;position:relative;cursor:pointer;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  position:absolute;left:50%;transform:translateX(-50%);
  width:18px;height:2px;border-radius:2px;background:var(--rk-text);content:"";
  transition:transform .22s var(--rk-ease),opacity .22s var(--rk-ease);
}
.nav-toggle span{top:21px}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* 移动抽屉 */
.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;width:302px;max-width:86vw;z-index:1300;
  background:#fff;box-shadow:-18px 0 44px rgba(15,35,70,.16);
  transform:translateX(105%);transition:transform .28s var(--rk-ease);
  padding:20px 22px 32px;overflow-y:auto;
}
.nav-drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-head b{font-size:15px;color:var(--rk-text)}
.drawer-close{width:40px;height:40px;border-radius:12px;border:1px solid var(--rk-line);background:#fff;cursor:pointer;color:var(--rk-text2);font-size:18px;line-height:1}
.drawer-links{display:flex;flex-direction:column;border-top:1px solid var(--rk-line)}
.drawer-links a{padding:15px 2px;border-bottom:1px solid var(--rk-line);font-size:15.5px;color:var(--rk-text2)}
.drawer-links a.active{color:var(--rk-cyan-deep);font-weight:700}
.drawer-cta{width:100%;margin-top:22px}
.drawer-mask{
  position:fixed;inset:0;background:rgba(7,19,34,.42);backdrop-filter:blur(2px);
  opacity:0;pointer-events:none;transition:opacity .28s var(--rk-ease);z-index:1290;
}
.drawer-mask.open{opacity:1;pointer-events:auto}
body.drawer-open{overflow:hidden}

/* ============ Hero（浅区） ============ */
.hero-light{
  position:relative;background:#fff;overflow:hidden;
  padding:64px 0 72px;border-bottom:1px solid var(--rk-line);
}
.hero-light::before{
  content:"";position:absolute;top:-160px;right:-120px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(0,227,176,.16),rgba(0,227,176,0) 68%);
  pointer-events:none;
}
.hero-light::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:linear-gradient(90deg,rgba(0,227,176,0),rgba(0,227,176,.7),rgba(0,227,176,0));
}
.hero-grid{display:grid;grid-template-columns:1.02fr .98fr;gap:52px;align-items:center;position:relative;z-index:2}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:13.5px;color:var(--rk-cyan-deep);font-weight:700}
.eyebrow-bar{width:4px;height:16px;border-radius:3px;background:linear-gradient(180deg,#00E3B0,#00A382)}
.hero-light h1{
  margin:16px 0 16px;font-size:clamp(27px,3.4vw,42px);line-height:1.28;font-weight:700;color:var(--rk-text);
}
.hero-sub{font-size:16.5px;line-height:1.85;color:var(--rk-text2);max-width:520px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:28px 0 30px}
.trust-row{display:flex;flex-wrap:wrap;gap:28px;padding-top:22px;border-top:1px solid var(--rk-line)}
.trust-row li{display:flex;flex-direction:column;gap:2px}
.trust-row b{font-size:22px;color:var(--rk-text);font-weight:700;line-height:1.2}
.trust-row span{font-size:13px;color:var(--rk-mute)}
.hero-visual{position:relative}
.hero-visual img{
  width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:var(--rk-r-img);
  background:#E9EEF6;box-shadow:var(--rk-shadow-l);
}
.float-card{
  position:absolute;left:-14px;bottom:18px;display:flex;align-items:center;gap:12px;
  background:#fff;border:1px solid var(--rk-line);border-radius:16px;
  padding:12px 16px;box-shadow:0 14px 34px rgba(15,35,70,.12);max-width:320px;
}
.dot-live{
  flex:none;width:10px;height:10px;border-radius:50%;background:var(--rk-cyan);
  box-shadow:0 0 0 4px rgba(0,227,176,.18);
}
.float-card b{display:block;font-size:13.5px;color:var(--rk-text)}
.float-card span{display:block;font-size:12.5px;color:var(--rk-text2);line-height:1.6}

/* ============ 通用板块 ============ */
.section{padding:88px 0}
.section-light{background:var(--rk-bg)}
.sec-head{max-width:720px;margin-bottom:32px}
.sec-head h2{font-size:clamp(22px,2.6vw,32px);line-height:1.35;color:var(--rk-text)}
.sec-head p{margin-top:12px;font-size:15.5px;color:var(--rk-text2)}
.sec-head .eyebrow{margin-bottom:12px}

/* ============ 筛选条 ============ */
.filter-bar{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px}
.chip{
  padding:9px 18px;border-radius:var(--rk-r-pill);cursor:pointer;
  background:#fff;border:1px solid var(--rk-line);color:var(--rk-text2);
  font-size:14px;transition:all .22s var(--rk-ease);
}
.chip:hover{border-color:var(--rk-cyan-deep);color:var(--rk-cyan-deep);transform:translateY(-1px)}
.chip.active{background:var(--rk-dark-900);border-color:var(--rk-dark-900);color:var(--rk-text-d);font-weight:600}
.chip:active{transform:translateY(0)}

/* ============ 卡片网格 ============ */
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.cl-card{
  background:#fff;border:1px solid var(--rk-line);border-radius:var(--rk-r-card);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .22s var(--rk-ease),box-shadow .22s var(--rk-ease),border-color .22s var(--rk-ease);
}
.cl-card:hover{transform:translateY(-4px);box-shadow:var(--rk-shadow-l);border-color:#DCE4EF}
.thumb{position:relative;aspect-ratio:16/10;background:#E9EEF6;overflow:hidden}
.thumb img{width:100%;height:100%;object-fit:cover;transition:transform .32s var(--rk-ease)}
.cl-card:hover .thumb img{transform:scale(1.03)}
.cl-body{padding:20px 20px 22px;display:flex;flex-direction:column;flex:1}
.cl-meta{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:12px}
.badge-pill{
  display:inline-flex;align-items:center;padding:4px 12px;border-radius:var(--rk-r-pill);
  border:1px solid rgba(0,163,130,.42);color:var(--rk-cyan-deep);background:rgba(0,227,176,.08);
  font-size:12px;font-weight:600;letter-spacing:.02em;
}
.cl-meta .mono{font-size:12.5px;color:var(--rk-mute)}
.cl-card h3{font-size:19px;line-height:1.5;margin-bottom:10px;transition:color .22s var(--rk-ease)}
.cl-card:hover h3{color:var(--rk-cyan-deep)}
.cl-card p{font-size:14px;color:var(--rk-text2);line-height:1.8;flex:1}
.cl-link{
  display:inline-flex;align-items:center;gap:6px;margin-top:16px;
  font-size:14px;font-weight:600;color:var(--rk-cyan-deep);
}
.cl-link span{transition:transform .22s var(--rk-ease)}
.cl-link:hover span{transform:translateX(4px)}

/* ============ 暗区带 ============ */
.band-dark{
  position:relative;background:var(--rk-dark-900);color:var(--rk-text-d);overflow:hidden;
  padding:80px 0;
}
.band-dark::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,rgba(0,227,176,0),rgba(0,227,176,.65),rgba(0,227,176,0));
}
.band-dark::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:56px 56px;
}
.band-dark .rk-container{position:relative;z-index:2}
.band-dark .eyebrow{color:var(--rk-cyan)}
.band-dark h2{font-size:clamp(22px,2.6vw,32px);line-height:1.35;color:var(--rk-text-d)}
.band-dark .sec-head p{color:var(--rk-text-d2)}

/* 数据条 */
.stats-grid{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;margin-top:30px;
}
.stat{
  background:var(--rk-glass);border:1px solid var(--rk-glass-line);border-radius:var(--rk-r-card);
  padding:22px 20px;backdrop-filter:blur(16px);
  transition:transform .22s var(--rk-ease),box-shadow .22s var(--rk-ease),border-color .22s var(--rk-ease);
}
.stat:hover{transform:translateY(-4px);box-shadow:var(--rk-shadow-d);border-color:rgba(0,227,176,.4)}
.stat b{display:block;font-size:clamp(28px,3vw,38px);line-height:1.15;color:var(--rk-cyan);font-weight:700}
.stat span{display:block;margin-top:8px;font-size:13px;color:var(--rk-text-d2);line-height:1.7}

/* 评价 */
.quote-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;margin-top:34px}
.quote-card{
  background:var(--rk-glass);border:1px solid var(--rk-glass-line);border-radius:var(--rk-r-card);
  padding:24px;backdrop-filter:blur(16px);
  transition:transform .22s var(--rk-ease),box-shadow .22s var(--rk-ease);
}
.quote-card:nth-child(2){transform:translateY(24px)}
.quote-card:hover{transform:translateY(-4px);box-shadow:var(--rk-shadow-d)}
.quote-top{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.avatar{
  width:44px;height:44px;border-radius:50%;flex:none;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,rgba(0,227,176,.28),rgba(255,106,53,.22));
  border:1px solid rgba(255,255,255,.18);color:var(--rk-text-d);font-weight:700;font-size:15px;
}
.quote-top b{display:block;font-size:14.5px;color:var(--rk-text-d)}
.quote-top em{display:block;font-style:normal;font-size:12.5px;color:var(--rk-text-d3)}
.quote-card p{font-size:14.5px;color:var(--rk-text-d2);line-height:1.85}
.stars{display:flex;gap:4px;margin-top:16px}
.stars svg{width:16px;height:16px}

/* ============ 安装流程 ============ */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px;position:relative}
.step{
  position:relative;background:#fff;border:1px solid var(--rk-line);border-radius:var(--rk-r-card);
  padding:24px 22px;transition:transform .22s var(--rk-ease),box-shadow .22s var(--rk-ease),border-color .22s var(--rk-ease);
}
.step:hover{transform:translateY(-4px);box-shadow:var(--rk-shadow-l);border-color:#DCE4EF}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;min-width:44px;height:30px;padding:0 10px;
  border-radius:var(--rk-r-pill);background:rgba(0,227,176,.1);border:1px solid rgba(0,163,130,.35);
  color:var(--rk-cyan-deep);font-size:14px;font-weight:700;
}
.step h3{font-size:18px;margin:16px 0 10px;line-height:1.5}
.step p{font-size:14px;color:var(--rk-text2);line-height:1.8}
.step::after{
  content:"";position:absolute;top:38px;right:-16px;width:22px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,rgba(0,227,176,.75),rgba(0,227,176,0));
}
.step:last-child::after{display:none}

/* ============ 对比卡 ============ */
.compare-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;margin-top:32px}
.compare-card{
  background:var(--rk-glass);border:1px solid var(--rk-glass-line);border-radius:var(--rk-r-card);
  padding:26px 24px;backdrop-filter:blur(16px);
  transition:transform .22s var(--rk-ease),box-shadow .22s var(--rk-ease),border-color .22s var(--rk-ease);
}
.compare-card:hover{transform:translateY(-4px);box-shadow:var(--rk-shadow-d);border-color:rgba(0,227,176,.4)}
.compare-card .tag{
  display:inline-flex;align-items:center;padding:4px 12px;border-radius:var(--rk-r-pill);
  border:1px solid rgba(255,106,53,.45);color:#FFB08C;background:rgba(255,106,53,.1);
  font-size:12px;font-weight:600;
}
.compare-card h3{font-size:19px;margin:14px 0 10px;color:var(--rk-text-d)}
.compare-card p{font-size:14.5px;color:var(--rk-text-d2);line-height:1.85}
.compare-card ul{margin-top:16px;display:flex;flex-direction:column;gap:9px}
.compare-card li{position:relative;padding-left:18px;font-size:14px;color:var(--rk-text-d2)}
.compare-card li::before{
  content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:2px;
  background:var(--rk-cyan);
}

/* ============ FAQ ============ */
.faq-acc{display:grid;gap:14px}
.faq-acc .accordion-item{
  background:#fff;border:1px solid var(--rk-line);border-radius:16px;overflow:hidden;
  box-shadow:var(--rk-shadow-l2);
}
.faq-acc .accordion-button{
  display:flex;align-items:center;gap:14px;width:100%;
  padding:18px 22px;background:#fff;border:0;box-shadow:none;
  font-size:16.5px;font-weight:600;color:var(--rk-text);text-align:left;
  transition:background .2s var(--rk-ease),color .2s var(--rk-ease),box-shadow .2s var(--rk-ease);
}
.faq-acc .accordion-button:focus{box-shadow:none;outline:none}
.faq-acc .accordion-button:focus-visible{outline:2px solid var(--rk-cyan);outline-offset:-3px}
.faq-acc .accordion-button:not(.collapsed){
  background:#F8FCFB;box-shadow:inset 4px 0 0 var(--rk-cyan);color:var(--rk-text);
}
.q-badge{
  flex:none;width:26px;height:26px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  border:1px solid rgba(0,163,130,.45);color:var(--rk-cyan-deep);background:rgba(0,227,176,.08);
  font-size:13px;font-weight:700;
}
.q-text{flex:1;line-height:1.6}
.faq-acc .accordion-button::after{
  content:"";flex:none;width:11px;height:11px;margin-left:auto;
  background-image:none;border-right:2px solid var(--rk-mute);border-bottom:2px solid var(--rk-mute);
  transform:rotate(45deg);transition:transform .22s var(--rk-ease),border-color .22s var(--rk-ease);
}
.faq-acc .accordion-button:not(.collapsed)::after{transform:rotate(-135deg);border-color:var(--rk-cyan-deep)}
.faq-acc .accordion-body{padding:0 22px 20px 62px;font-size:14.8px;color:var(--rk-text2);line-height:1.9;background:#F8FCFB}

/* ============ 结尾 CTA ============ */
.cta-band{
  position:relative;background:var(--rk-dark-800);color:var(--rk-text-d);overflow:hidden;
  padding:72px 0;
}
.cta-band::before{
  content:"";position:absolute;left:-10%;top:-140px;width:640px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(0,227,176,.18),rgba(0,227,176,0) 70%);
}
.cta-band::after{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,rgba(0,227,176,0),rgba(0,227,176,.6),rgba(0,227,176,0));
}
.cta-inner{position:relative;z-index:2;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px}
.cta-inner h2{font-size:clamp(22px,2.6vw,30px);line-height:1.35;color:var(--rk-text-d)}
.cta-inner p{margin-top:12px;font-size:15px;color:var(--rk-text-d2);max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ============ 页脚 ============ */
.site-footer{background:var(--rk-dark-900);color:var(--rk-text-d2);padding:64px 0 28px;position:relative}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,rgba(0,227,176,0),rgba(0,227,176,.5),rgba(0,227,176,0));
}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:36px}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.foot-brand span{font-size:16.5px;font-weight:700;color:var(--rk-text-d)}
.foot-desc{font-size:14px;line-height:1.9;color:var(--rk-text-d2);max-width:340px}
.foot-col h4{font-size:15px;color:var(--rk-text-d);margin-bottom:16px;font-weight:700}
.foot-col ul{display:flex;flex-direction:column;gap:11px}
.foot-col a{font-size:14px;color:var(--rk-text-d2)}
.foot-col a:hover{color:var(--rk-cyan)}
.foot-contact{font-size:14px;line-height:2;color:var(--rk-text-d2)}
.foot-contact b{color:var(--rk-text-d);font-weight:600}
.foot-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.09);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
}
.foot-bottom p{font-size:13px;color:var(--rk-text-d3)}
.foot-bottom .mono{color:var(--rk-text-d3);font-size:12.5px}

/* ============ 底部固定转化条 ============ */
.sticky-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:1250;
  background:rgba(7,19,34,.9);backdrop-filter:blur(16px);
  border-top:1px solid rgba(0,227,176,.28);
  padding:10px 0 calc(10px + env(safe-area-inset-bottom));
  opacity:0;transform:translateY(100%);pointer-events:none;
  transition:opacity .28s var(--rk-ease),transform .28s var(--rk-ease);
}
.sticky-cta.show{opacity:1;transform:translateY(0);pointer-events:auto}
.sticky-inner{display:flex;align-items:center;justify-content:space-between;gap:20px}
.sticky-text{font-size:14.5px;color:var(--rk-text-d);font-weight:600}
.sticky-text em{display:block;font-style:normal;font-size:12.5px;color:var(--rk-text-d2);font-weight:400;margin-top:2px}
.sticky-actions{display:flex;align-items:center;gap:12px;flex:none}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .nav-search{width:180px}
  .nav-links{gap:20px}
}
@media (max-width:991.98px){
  .nav-links,.nav-search{display:none}
  .nav-toggle{display:block}
  .btn-nav{display:none}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-visual{order:-1}
  .float-card{left:12px;bottom:12px}
  .stats-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .step::after{display:none}
  .compare-grid{grid-template-columns:1fr;gap:18px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:30px}
  .section{padding:64px 0}
  .band-dark,.cta-band{padding:64px 0}
}
@media (max-width:767.98px){
  .rk-container{padding:0 16px}
  .nav-inner{height:56px}
  .brand-text{font-size:15.5px}
  .hero-light{padding:36px 0 52px}
  .hero-actions{gap:10px}
  .hero-actions .btn-glow,.hero-actions .btn-outline{flex:1 1 auto;min-width:150px}
  .quote-grid{grid-template-columns:1fr}
  .quote-card:nth-child(2){transform:none}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%}
  .cta-actions a{flex:1 1 auto;justify-content:center}
  .foot-grid{grid-template-columns:1fr;gap:28px}
  .sticky-cta{opacity:1;transform:translateY(0);pointer-events:auto}
  .sticky-text{font-size:13.5px}
  .sticky-text em{display:none}
  .sticky-actions .btn-glow{flex:1 1 auto;justify-content:center}
  body{padding-bottom:calc(76px + env(safe-area-inset-bottom))}
}
@media (max-width:575.98px){
  h1,h2{letter-spacing:0}
  .hero-light h1{margin-top:12px}
  .card-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:1fr;gap:14px}
  .trust-row{gap:18px}
  .section{padding:48px 0}
  .band-dark,.cta-band{padding:48px 0}
  .sticky-actions{width:100%}
  .sticky-actions .btn-outline{display:none}
  .sticky-actions .btn-glow{width:62%;flex:none}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:.01ms !important;animation-duration:.01ms !important;scroll-behavior:auto !important}
}

/* roulang page: category5 */
:root{
  --rk-dark-1:#071322;
  --rk-dark-2:#0A1A2F;
  --rk-glass:rgba(255,255,255,.055);
  --rk-glass-line:rgba(255,255,255,.12);
  --rk-cyan:#00E3B0;
  --rk-cyan-hover:#22FFC6;
  --rk-cyan-deep:#00A382;
  --rk-orange:#FF6A35;
  --rk-t-light:#EAF2FF;
  --rk-t-mid:#9CB0C9;
  --rk-t-dim:#6B7F99;
  --rk-bg:#F5F7FB;
  --rk-card:#FFFFFF;
  --rk-line:#E6EBF2;
  --rk-ink:#0F2136;
  --rk-ink-2:#4B5F78;
  --rk-r-card:18px;
  --rk-r-img:22px;
  --rk-r-btn:12px;
  --rk-r-pill:999px;
  --rk-sh-dark:0 18px 40px rgba(0,10,30,.45);
  --rk-sh-light:0 10px 30px rgba(15,35,70,.08);
  --rk-ease:cubic-bezier(.22,.61,.36,1);
  --rk-mono:ui-monospace,"DIN Alternate","SFMono-Regular",Menlo,Consolas,monospace;

  --bs-primary:#00A382;
  --bs-primary-rgb:0,163,130;
  --bs-body-bg:#F5F7FB;
  --bs-body-color:#0F2136;
  --bs-body-font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  --bs-border-color:#E6EBF2;
  --bs-border-radius:12px;
  --bs-link-color:#00795F;
  --bs-link-hover-color:#00A382;
  --bs-font-sans-serif:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--rk-ink);
  background:var(--rk-bg);
  padding-bottom:env(safe-area-inset-bottom);
}
img{max-width:100%;display:block;height:auto}
a{text-decoration:none;color:inherit;transition:color .22s var(--rk-ease)}
a:hover{color:var(--rk-cyan-deep)}
button,input{font-family:inherit}
:focus-visible{outline:2px solid var(--rk-cyan);outline-offset:2px;border-radius:6px}
ul,ol{padding-left:0;margin:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
.mono{font-family:var(--rk-mono);letter-spacing:.04em;font-size:.94em}

.rk-container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1040;
  background:#fff;
  border-bottom:1px solid var(--rk-line);
  box-shadow:0 2px 12px rgba(16,42,80,.06);
}
.nav-inner{display:flex;align-items:center;gap:24px;height:68px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-text{font-size:17px;font-weight:700;color:var(--rk-ink);letter-spacing:.2px;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:6px}
.nav-links a{
  position:relative;font-size:15px;color:var(--rk-ink-2);padding:6px 0;white-space:nowrap;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--rk-cyan),var(--rk-cyan-deep));
  transform:scaleX(0);transform-origin:left;transition:transform .24s var(--rk-ease);
}
.nav-links a:hover{color:var(--rk-ink)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.active{color:var(--rk-ink);font-weight:700}
.nav-links a.active::after{transform:scaleX(1)}
.nav-right{display:flex;align-items:center;gap:12px;margin-left:auto}
.nav-search{
  display:flex;align-items:center;gap:8px;height:40px;padding:0 14px;
  background:#F1F4F9;border:1px solid transparent;border-radius:var(--rk-r-pill);
  transition:border-color .22s var(--rk-ease),box-shadow .22s var(--rk-ease),background .22s var(--rk-ease);
}
.nav-search input{
  border:0;background:transparent;outline:none;width:132px;font-size:14px;color:var(--rk-ink);
}
.nav-search input::placeholder{color:#8798AE}
.nav-search:focus-within{
  background:#fff;border-color:var(--rk-cyan);
  box-shadow:0 0 0 4px rgba(0,227,176,.16);
}
.btn-glow{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--rk-r-btn);border:0;
  font-size:15px;font-weight:600;color:#04231C;
  background:linear-gradient(135deg,var(--rk-cyan-hover),var(--rk-cyan) 42%,var(--rk-cyan-deep));
  box-shadow:0 0 0 1px rgba(0,227,176,.45),0 10px 28px rgba(0,227,176,.25);
  position:relative;overflow:hidden;
  transition:transform .22s var(--rk-ease),box-shadow .22s var(--rk-ease),color .22s var(--rk-ease);
}
.btn-glow::before{
  content:"";position:absolute;top:0;left:-60%;width:40%;height:100%;
  background:linear-gradient(105deg,transparent,rgba(255,255,255,.55),transparent);
  transform:skewX(-18deg);opacity:0;
}
.btn-glow:hover{transform:translateY(-2px);box-shadow:0 0 0 1px rgba(0,227,176,.6),0 16px 34px rgba(0,227,176,.34);color:#04231C}
.btn-glow:hover::before{animation:sheen .7s var(--rk-ease) 1}
@keyframes sheen{0%{left:-60%;opacity:1}100%{left:120%;opacity:0}}
.btn-nav{height:40px;padding:0 18px;font-size:14px}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--rk-r-btn);
  font-size:15px;font-weight:600;color:var(--rk-t-light);
  background:var(--rk-glass);border:1px solid var(--rk-glass-line);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  transition:transform .22s var(--rk-ease),border-color .22s var(--rk-ease),background .22s var(--rk-ease);
}
.btn-ghost:hover{transform:translateY(-2px);border-color:rgba(0,227,176,.55);color:var(--rk-cyan-hover);background:rgba(255,255,255,.08)}
.btn-ghost.on-light{color:var(--rk-ink);background:#fff;border-color:var(--rk-line);box-shadow:var(--rk-sh-light)}
.btn-ghost.on-light:hover{color:var(--rk-cyan-deep);border-color:rgba(0,163,130,.45)}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;border:1px solid var(--rk-line);
  background:#fff;align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--rk-ink);border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--rk-ink);border-radius:2px;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* ============ 浅区 Hero ============ */
.hero-lite{
  position:relative;overflow:hidden;
  background:#fff;
  border-bottom:1px solid var(--rk-line);
}
.hero-lite::before{
  content:"";position:absolute;inset:0;
  background:url("/assets/images/backpic/back-2.png") center/cover no-repeat;
  opacity:.16;
}
.hero-lite::after{
  content:"";position:absolute;top:-120px;right:-140px;width:460px;height:460px;border-radius:50%;
  background:radial-gradient(circle at 30% 30%,rgba(0,227,176,.22),transparent 65%);
  pointer-events:none;
}
.hero-inner{position:relative;z-index:2;padding:34px 0 62px}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--rk-t-dim);margin-bottom:20px}
.crumb a{color:var(--rk-t-dim)}
.crumb a:hover{color:var(--rk-cyan-deep)}
.crumb .sep{color:#C3CEDA}
.crumb .now{color:var(--rk-ink);font-weight:600}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--rk-r-pill);
  font-size:13px;font-weight:600;color:#00674F;
  background:rgba(0,227,176,.12);border:1px solid rgba(0,163,130,.3);
  margin-bottom:18px;
}
.eyebrow i{color:var(--rk-cyan-deep)}
h1{
  font-size:clamp(28px,4vw,44px);line-height:1.28;font-weight:700;color:var(--rk-ink);
  letter-spacing:-.2px;margin-bottom:16px;
}
h1 em{font-style:normal;color:var(--rk-cyan-deep)}
.hero-sub{font-size:16.5px;color:var(--rk-ink-2);max-width:560px;margin-bottom:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px}
.hero-actions .btn-glow{color:#04231C}
.trust-row{display:flex;flex-wrap:wrap;gap:28px}
.trust-item{display:flex;flex-direction:column;gap:2px}
.trust-num{font-family:var(--rk-mono);font-size:22px;font-weight:700;color:var(--rk-cyan-deep);letter-spacing:.02em}
.trust-label{font-size:13px;color:var(--rk-t-dim)}
.hero-art{position:relative}
.hero-art img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:var(--rk-r-img);border:1px solid var(--rk-line);
  box-shadow:0 22px 46px rgba(15,35,70,.14);
  background:#E9EEF6;
}
.hero-art .float-card{
  position:absolute;left:-14px;bottom:-18px;
  background:#fff;border:1px solid var(--rk-line);border-radius:16px;
  box-shadow:var(--rk-sh-light);padding:14px 18px;display:flex;align-items:center;gap:12px;
}
.float-card .fc-dot{width:9px;height:9px;border-radius:50%;background:var(--rk-cyan);box-shadow:0 0 0 5px rgba(0,227,176,.18)}
.float-card b{font-size:14px;display:block}
.float-card span{font-size:12.5px;color:var(--rk-t-dim)}

/* ============ 通用浅区板块 ============ */
.section{padding:88px 0}
.section.tight{padding:64px 0}
.section.plain{background:#fff}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px}
.sec-head .lead{max-width:680px}
h2{
  font-size:clamp(22px,2.6vw,32px);line-height:1.35;font-weight:700;color:var(--rk-ink);
  padding-left:14px;position:relative;margin-bottom:10px;
}
h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;border-radius:4px;
  background:linear-gradient(180deg,var(--rk-cyan),var(--rk-cyan-deep));
}
.sec-head p{font-size:15px;color:var(--rk-ink-2);padding-left:14px}
.link-more{font-size:14px;font-weight:600;color:var(--rk-cyan-deep);white-space:nowrap}
.link-more:hover{color:#00674F}

/* ============ 词条问答区 ============ */
.qna-layout{display:grid;grid-template-columns:1fr 300px;gap:36px;align-items:start}
.qna-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.qna-item{
  background:#fff;border:1px solid var(--rk-line);border-left:4px solid rgba(0,163,130,.35);
  border-radius:14px;padding:20px 22px;
  transition:transform .22s var(--rk-ease),box-shadow .22s var(--rk-ease),border-color .22s var(--rk-ease);
}
.qna-item:hover{transform:translateY(-4px);box-shadow:var(--rk-sh-light);border-left-color:var(--rk-cyan-deep)}
.qna-item h3{font-size:17px;font-weight:700;color:var(--rk-ink);margin-bottom:8px;line-height:1.55}
.qna-item p{font-size:14.5px;color:var(--rk-ink-2);line-height:1.8}
.qna-item .tag-inline{
  display:inline-block;margin-top:12px;font-family:var(--rk-mono);font-size:12px;letter-spacing:.06em;
  color:var(--rk-cyan-deep);background:rgba(0,227,176,.1);border:1px solid rgba(0,163,130,.24);
  border-radius:var(--rk-r-pill);padding:3px 10px;
}

.toc-card{
  position:sticky;top:92px;
  background:#fff;border:1px solid var(--rk-line);border-radius:var(--rk-r-card);
  box-shadow:var(--rk-sh-light);padding:22px 20px;
}
.toc-card h3{font-size:15px;font-weight:700;color:var(--rk-ink);margin-bottom:14px;display:flex;align-items:center;gap:8px}
.toc-card h3 i{color:var(--rk-cyan-deep)}
.toc-list li+li{margin-top:10px}
.toc-list a{
  display:block;font-size:14px;color:var(--rk-ink-2);padding-left:12px;border-left:2px solid var(--rk-line);
  line-height:1.6;
}
.toc-list a:hover{color:var(--rk-cyan-deep);border-left-color:var(--rk-cyan-deep)}
.toc-cta{margin-top:18px;padding-top:16px;border-top:1px dashed var(--rk-line)}
.toc-cta .btn-glow{width:100%}
.toc-cta p{font-size:12.5px;color:var(--rk-t-dim);text-align:center;margin-top:10px}

/* ============ 适配要点条 ============ */
.spec-strip{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;
  background:#fff;border:1px solid var(--rk-line);border-radius:var(--rk-r-card);
  padding:26px;box-shadow:var(--rk-sh-light);
}
.spec-item{border-left:1px solid var(--rk-line);padding-left:18px}
.spec-item:first-child{border-left:0;padding-left:0}
.spec-item .num{font-family:var(--rk-mono);font-size:26px;font-weight:700;color:var(--rk-cyan-deep);line-height:1.2}
.spec-item .lab{font-size:14px;font-weight:600;color:var(--rk-ink);margin-top:4px}
.spec-item .txt{font-size:13px;color:var(--rk-t-dim);margin-top:2px}

/* ============ 相关入口网格 ============ */
.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.rel-card{
  display:block;background:#fff;border:1px solid var(--rk-line);border-radius:var(--rk-r-card);
  overflow:hidden;height:100%;
  transition:transform .22s var(--rk-ease),box-shadow .22s var(--rk-ease),border-color .22s var(--rk-ease);
}
.rel-card:hover{transform:translateY(-4px);box-shadow:0 18px 38px rgba(15,35,70,.12);border-color:rgba(0,163,130,.35)}
.rel-card img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:14px 14px 0 0;background:#E9EEF6}
.rel-body{padding:20px 22px 24px}
.badge-cyan{
  display:inline-block;font-size:12px;font-weight:600;color:#00674F;
  border:1px solid rgba(0,163,130,.42);background:rgba(0,227,176,.1);
  border-radius:var(--rk-r-pill);padding:3px 11px;margin-bottom:12px;
}
.rel-body h3{font-size:17px;font-weight:700;color:var(--rk-ink);line-height:1.5;margin-bottom:8px}
.rel-card:hover h3{color:var(--rk-cyan-deep)}
.rel-body p{font-size:14px;color:var(--rk-ink-2);line-height:1.8}
.rel-foot{display:flex;align-items:center;justify-content:space-between;margin-top:14px;font-size:13px;color:var(--rk-t-dim)}
.rel-foot .mono{color:#8798AE}
.rel-foot i{color:var(--rk-cyan-deep);transition:transform .22s var(--rk-ease)}
.rel-card:hover .rel-foot i{transform:translateX(4px)}

/* ============ 结尾 CTA 带 ============ */
.cta-band{
  position:relative;overflow:hidden;background:var(--rk-dark-1);
  border-top:1px solid rgba(255,255,255,.06);
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:url("/assets/images/backpic/back-3.png") center/cover no-repeat;opacity:.22;
}
.cta-band::after{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(0,227,176,.7),transparent);
}
.cta-inner{position:relative;z-index:2;padding:56px 0;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px}
.cta-inner h2{color:var(--rk-t-light);padding-left:0;font-size:clamp(20px,2.3vw,28px)}
.cta-inner h2::before{display:none}
.cta-inner p{color:var(--rk-t-mid);font-size:15px;margin-top:8px;max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ============ 页脚 ============ */
.site-footer{background:var(--rk-dark-1);color:var(--rk-t-mid);padding:64px 0 28px;position:relative}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(0,227,176,.55),transparent);
}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:36px}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.foot-brand span{font-size:16px;font-weight:700;color:var(--rk-t-light)}
.foot-desc{font-size:13.5px;color:var(--rk-t-dim);line-height:1.9;max-width:330px}
.foot-col h4{font-size:15px;font-weight:700;color:var(--rk-t-light);margin-bottom:14px}
.foot-col li+li{margin-top:10px}
.foot-col a{font-size:14px;color:var(--rk-t-mid)}
.foot-col a:hover{color:var(--rk-cyan-hover)}
.foot-contact{font-size:13.5px;color:var(--rk-t-dim);line-height:2}
.foot-contact b{color:var(--rk-t-mid);font-weight:600}
.foot-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.08);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--rk-t-dim);
}

/* ============ 底部固定转化条 ============ */
.fixed-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:1035;
  background:rgba(7,19,34,.92);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border-top:1px solid rgba(0,227,176,.28);
  transform:translateY(120%);opacity:0;visibility:hidden;
  transition:transform .32s var(--rk-ease),opacity .32s var(--rk-ease),visibility .32s;
  padding-bottom:env(safe-area-inset-bottom);
}
.fixed-bar.show{transform:translateY(0);opacity:1;visibility:visible}
.fixed-inner{
  max-width:1200px;margin:0 auto;padding:10px 24px;min-height:64px;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
}
.fixed-text{font-size:14px;color:var(--rk-t-light);display:flex;align-items:center;gap:10px}
.fixed-text .dot{width:8px;height:8px;border-radius:50%;background:var(--rk-cyan);box-shadow:0 0 0 5px rgba(0,227,176,.16)}
.fixed-text span{color:var(--rk-t-mid);font-size:13px}
.fixed-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.fixed-actions .btn-glow,.fixed-actions .btn-ghost{height:42px;padding:0 20px;font-size:14px}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .nav-search input{width:110px}
  .nav-links{gap:20px}
}
@media (max-width:991px){
  .nav-inner{height:56px;gap:14px}
  .brand-text{font-size:15.5px}
  .nav-toggle{display:flex}
  .nav-search{display:none}
  .btn-nav{display:none}
  .nav-links{
    position:fixed;top:56px;left:0;right:0;bottom:0;
    background:#fff;flex-direction:column;align-items:stretch;gap:0;
    padding:16px 24px 32px;margin:0;overflow-y:auto;
    border-top:1px solid var(--rk-line);
    transform:translateY(-10px);opacity:0;visibility:hidden;
    transition:transform .26s var(--rk-ease),opacity .26s var(--rk-ease),visibility .26s;
  }
  .nav-links.open{transform:translateY(0);opacity:1;visibility:visible}
  .nav-links a{font-size:16px;padding:15px 0;border-bottom:1px solid var(--rk-line)}
  .nav-links a::after{display:none}
  .nav-links a.active{color:var(--rk-cyan-deep)}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-art .float-card{left:0;bottom:-16px}
  .section{padding:64px 0}
  .qna-layout{grid-template-columns:1fr}
  .toc-card{position:static;order:-1}
  .spec-strip{grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;padding:22px}
  .spec-item:nth-child(3){border-left:0;padding-left:0}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .foot-grid{grid-template-columns:1fr 1fr;gap:28px}
  body{padding-bottom:76px}
  .fixed-bar{transform:translateY(0);opacity:1;visibility:visible}
  .fixed-text span{display:none}
}
@media (max-width:767px){
  .rk-container{padding:0 16px}
  .section{padding:48px 0}
  .section.tight{padding:44px 0}
  h1{font-size:clamp(25px,7vw,32px)}
  .hero-inner{padding:24px 0 48px}
  .qna-grid{grid-template-columns:1fr}
  .rel-grid{grid-template-columns:1fr}
  .spec-strip{grid-template-columns:1fr;gap:18px}
  .spec-item{border-left:0;padding-left:0;border-top:1px solid var(--rk-line);padding-top:16px}
  .spec-item:first-child{border-top:0;padding-top:0}
  .foot-grid{grid-template-columns:1fr}
  .cta-inner{padding:44px 0}
  .sec-head{flex-direction:column;align-items:flex-start;gap:10px}
}
@media (max-width:520px){
  .hero-actions .btn-glow,.hero-actions .btn-ghost{width:100%}
  .trust-row{gap:18px}
  .fixed-inner{padding:8px 14px;gap:10px}
  .fixed-actions{width:100%;gap:8px}
  .fixed-actions .btn-glow{flex:0 0 62%}
  .fixed-actions .btn-ghost{flex:1}
  .fixed-actions .btn-glow,.fixed-actions .btn-ghost{padding:0 12px;font-size:13px}
  .fixed-text{display:none}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
}

/* roulang page: category4 */
:root{
  --rk-dark-1:#071322;
  --rk-dark-2:#0A1A2F;
  --rk-glass:rgba(255,255,255,.055);
  --rk-glass-line:rgba(255,255,255,.12);
  --rk-cyan:#00E3B0;
  --rk-cyan-hi:#22FFC6;
  --rk-cyan-deep:#00A382;
  --rk-orange:#FF6A35;
  --rk-t1:#EAF2FF;
  --rk-t2:#9CB0C9;
  --rk-t3:#6B7F99;
  --lt-bg:#F5F7FB;
  --lt-card:#FFFFFF;
  --lt-line:#E6EBF2;
  --lt-ink:#0F2136;
  --lt-ink2:#4B5F78;
  --r-card:18px;
  --r-lg:22px;
  --r-btn:12px;
  --sh-light:0 10px 30px rgba(15,35,70,.08);
  --sh-dark:0 18px 40px rgba(0,10,30,.45);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-cn:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  --font-mono:ui-monospace,"DIN Alternate","SFMono-Regular",Consolas,monospace;

  --bs-primary:#00A382;
  --bs-primary-rgb:0,163,130;
  --bs-body-bg:#F5F7FB;
  --bs-body-color:#0F2136;
  --bs-border-color:#E6EBF2;
  --bs-border-radius:12px;
  --bs-border-radius-lg:18px;
  --bs-link-color:#00A382;
  --bs-link-hover-color:#00775f;
  --bs-font-sans-serif:var(--font-cn);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  color:var(--lt-ink);
  background:var(--lt-bg);
  overflow-x:hidden;
  padding-bottom:0;
}
img{max-width:100%;display:block}
a{color:var(--rk-cyan-deep);text-decoration:none;transition:color .22s var(--ease)}
a:hover{color:#00775f}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul{padding-left:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--rk-cyan);outline-offset:3px;border-radius:6px}

.rk-container{max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section-sm{padding:56px 0}
.section-dark{background:var(--rk-dark-1);color:var(--rk-t1)}
.section-light{background:var(--lt-bg)}
.mono{font-family:var(--font-mono);font-size:14px;letter-spacing:.04em}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1035;
  background:#fff;
  border-bottom:1px solid var(--lt-line);
  box-shadow:0 2px 12px rgba(16,42,80,.06);
}
.nav-inner{display:flex;align-items:center;gap:20px;height:68px;position:relative}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-text{font-size:17px;font-weight:700;color:var(--lt-ink);white-space:nowrap;letter-spacing:.2px}
.nav-links{display:flex;align-items:center;gap:2px;flex:1;margin-left:6px}
.nav-links a{
  position:relative;display:inline-block;padding:22px 11px;
  font-size:15px;color:#42566F;white-space:nowrap;transition:color .22s var(--ease);
}
.nav-links a:hover{color:var(--rk-cyan-deep)}
.nav-links a.active{color:var(--lt-ink);font-weight:700}
.nav-links a.active::after{
  content:"";position:absolute;left:11px;right:11px;bottom:16px;height:2px;
  background:var(--rk-cyan-deep);border-radius:2px;
}
.nav-right{display:flex;align-items:center;gap:12px;margin-left:auto}
.nav-search{
  display:flex;align-items:center;gap:8px;
  background:#F1F4F9;border:1px solid transparent;border-radius:999px;
  height:40px;padding:0 14px;width:200px;transition:all .22s var(--ease);
}
.nav-search:focus-within{background:#fff;border-color:var(--rk-cyan-deep);box-shadow:0 0 0 4px rgba(0,163,130,.12)}
.nav-search input{border:0;background:transparent;outline:none;font-size:14px;color:var(--lt-ink);width:100%}
.nav-search input::placeholder{color:#8798AE}
.btn-glow{
  position:relative;overflow:hidden;
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:10px;border:0;
  font-size:15px;font-weight:700;color:#04231C;
  background:linear-gradient(135deg,#00E3B0,#00A382);
  box-shadow:0 0 0 1px rgba(0,227,176,.45),0 10px 28px rgba(0,227,176,.25);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),color .22s var(--ease);
}
.btn-glow:hover{color:#04231C;transform:translateY(-2px);box-shadow:0 0 0 1px rgba(0,227,176,.62),0 16px 34px rgba(0,227,176,.32)}
.btn-glow::after{
  content:"";position:absolute;top:0;left:-130%;width:55%;height:100%;
  background:linear-gradient(100deg,transparent,rgba(255,255,255,.55),transparent);
  transform:skewX(-20deg);transition:left .55s var(--ease);
}
.btn-glow:hover::after{left:140%}
.btn-nav{height:40px;padding:0 18px;font-size:14px;border-radius:10px}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;color:var(--lt-ink);
  background:#fff;border:1px solid var(--lt-line);
  transition:all .22s var(--ease);
}
.btn-ghost:hover{color:var(--rk-cyan-deep);border-color:var(--rk-cyan-deep);transform:translateY(-2px);box-shadow:0 8px 22px rgba(0,163,130,.14)}
.btn-ghost-dark{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;color:var(--rk-t1);
  background:var(--rk-glass);border:1px solid var(--rk-glass-line);
  backdrop-filter:blur(12px);transition:all .22s var(--ease);
}
.btn-ghost-dark:hover{color:#fff;border-color:rgba(0,227,176,.55);transform:translateY(-2px)}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;
  border:1px solid var(--lt-line);background:#F7F9FC;align-items:center;justify-content:center;
}
.nav-toggle span{position:relative;display:block;width:18px;height:2px;background:var(--lt-ink);border-radius:2px}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--lt-ink);border-radius:2px}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* ---------- hero ---------- */
.cat-hero{
  position:relative;background:linear-gradient(180deg,#FFFFFF 0%,#F5F7FB 100%);
  padding:56px 0 64px;overflow:hidden;
}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(15,33,54,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(15,33,54,.035) 1px,transparent 1px);
  background-size:46px 46px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.7),transparent 78%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.7),transparent 78%);
  pointer-events:none;
}
.cat-hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(0,163,130,.55),transparent);
}
.hero-grid{position:relative;display:grid;grid-template-columns:1.12fr .88fr;gap:44px;align-items:center}
.hero-copy{max-width:640px}
.badge-pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 16px;border-radius:999px;
  border:1px solid rgba(0,163,130,.35);
  background:rgba(0,227,176,.08);
  color:var(--rk-cyan-deep);font-size:13px;font-weight:600;letter-spacing:.02em;
}
.badge-pill .dot{width:6px;height:6px;border-radius:50%;background:var(--rk-cyan-deep)}
.cat-hero h1{
  margin:20px 0 16px;
  font-size:clamp(28px,4.4vw,48px);line-height:1.25;font-weight:700;color:var(--lt-ink);
}
.cat-hero h1 em{font-style:normal;color:var(--rk-cyan-deep)}
.hero-sub{font-size:17px;line-height:1.8;color:var(--lt-ink2);max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.hero-facts{display:flex;flex-wrap:wrap;gap:28px;margin-top:34px;padding-top:24px;border-top:1px dashed var(--lt-line)}
.fact{min-width:110px}
.fact b{display:block;font-family:var(--font-mono);font-size:26px;font-weight:700;letter-spacing:.04em;color:var(--lt-ink)}
.fact span{font-size:13px;color:var(--lt-ink2)}
.hero-card{
  background:#fff;border:1px solid var(--lt-line);border-radius:var(--r-lg);
  box-shadow:var(--sh-light);padding:28px;
}
.hero-card .hc-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.hero-card .hc-head h2{font-size:18px;font-weight:700;color:var(--lt-ink)}
.hero-card .hc-head span{font-family:var(--font-mono);font-size:12px;letter-spacing:.04em;color:var(--rk-cyan-deep);border:1px solid rgba(0,163,130,.35);border-radius:999px;padding:3px 10px}
.step-line{display:flex;flex-direction:column;gap:0}
.step-line li{display:flex;gap:14px;padding:14px 0;border-bottom:1px dashed #EDF1F7}
.step-line li:last-child{border-bottom:0;padding-bottom:0}
.step-line .idx{font-family:var(--font-mono);font-size:14px;font-weight:700;color:var(--rk-orange);letter-spacing:.04em;padding-top:2px;min-width:26px}
.step-line .tx b{display:block;font-size:15px;font-weight:600;color:var(--lt-ink)}
.step-line .tx span{font-size:13.5px;color:var(--lt-ink2);line-height:1.7}

/* ---------- section head ---------- */
.sec-head{margin-bottom:40px;max-width:760px}
.sec-head .bar{width:4px;height:22px;border-radius:2px;background:linear-gradient(180deg,var(--rk-cyan),var(--rk-cyan-deep));display:inline-block;vertical-align:-4px;margin-right:12px}
.sec-head h2{display:inline;font-size:clamp(22px,2.6vw,32px);line-height:1.35;font-weight:700;color:var(--lt-ink)}
.sec-head p{margin-top:14px;font-size:15.5px;color:var(--lt-ink2)}
.section-dark .sec-head h2{color:var(--rk-t1)}
.section-dark .sec-head p{color:var(--rk-t2)}

/* ---------- compare table ---------- */
.cmp-wrap{
  border:1px solid var(--lt-line);border-radius:var(--r-card);
  background:#fff;box-shadow:var(--sh-light);overflow:hidden;
}
.cmp-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch}
.cmp-table{width:100%;min-width:820px;border-collapse:separate;border-spacing:0}
.cmp-table thead th{
  background:var(--rk-dark-1);color:var(--rk-t1);
  font-size:14px;font-weight:600;letter-spacing:.02em;
  padding:17px 18px;text-align:left;white-space:nowrap;border:0;
}
.cmp-table tbody td{
  padding:18px;border-top:1px solid var(--lt-line);
  font-size:14.5px;line-height:1.75;color:var(--lt-ink2);vertical-align:top;
}
.cmp-table tbody tr:nth-child(even) td{background:#F7F9FC}
.cmp-table tbody td:first-child{font-weight:700;color:var(--lt-ink);width:21%}
.cmp-table tbody td .mini{
  display:inline-block;font-family:var(--font-mono);font-size:12.5px;letter-spacing:.04em;
  color:var(--rk-cyan-deep);background:rgba(0,227,176,.1);
  border:1px solid rgba(0,163,130,.3);border-radius:999px;padding:2px 10px;
}
.cmp-note{margin-top:16px;font-size:13.5px;color:var(--lt-ink2)}

/* ---------- order strip ---------- */
.order-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.order-item{
  background:#fff;border:1px solid var(--lt-line);border-radius:var(--r-card);
  padding:26px;transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.order-item:hover{transform:translateY(-4px);box-shadow:var(--sh-light);border-color:rgba(0,163,130,.35)}
.order-item .num{font-family:var(--font-mono);font-size:30px;font-weight:700;color:rgba(0,163,130,.28);letter-spacing:.04em;line-height:1}
.order-item h3{margin:12px 0 8px;font-size:18px;font-weight:600;color:var(--lt-ink)}
.order-item p{font-size:14.5px;color:var(--lt-ink2)}

/* ---------- feature split ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center}
.split-media{border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--lt-line);background:#E9EEF6}
.split-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-lg);transition:transform .35s var(--ease)}
.split-media:hover img{transform:scale(1.02)}
.split-body h2{font-size:clamp(22px,2.6vw,30px);line-height:1.4;font-weight:700;color:var(--lt-ink);margin-bottom:16px}
.split-body p{font-size:15.5px;color:var(--lt-ink2);margin-bottom:14px}
.check-list{margin-top:18px;display:flex;flex-direction:column;gap:12px}
.check-list li{display:flex;gap:12px;font-size:15px;color:var(--lt-ink);align-items:flex-start}
.check-list li i{
  flex:none;width:20px;height:20px;margin-top:4px;border-radius:50%;
  border:1.5px solid var(--rk-cyan-deep);position:relative;
}
.check-list li i::after{
  content:"";position:absolute;left:5px;top:3px;width:6px;height:10px;
  border-right:2px solid var(--rk-cyan-deep);border-bottom:2px solid var(--rk-cyan-deep);
  transform:rotate(40deg);
}

/* ---------- faq + sidebar ---------- */
.faq-layout{display:grid;grid-template-columns:1.55fr 1fr;gap:36px;align-items:start}
.faq-list{display:flex;flex-direction:column;gap:14px}
.faq-item{
  background:#fff;border:1px solid var(--lt-line);border-radius:14px;
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
  overflow:hidden;
}
.faq-item.open{border-color:rgba(0,163,130,.45);box-shadow:var(--sh-light)}
.faq-head{
  display:flex;align-items:center;gap:14px;width:100%;
  padding:20px 22px;background:transparent;border:0;text-align:left;cursor:pointer;
}
.faq-ico{
  flex:none;width:28px;height:28px;border-radius:50%;
  border:1.5px solid var(--rk-cyan-deep);color:var(--rk-cyan-deep);
  font-family:var(--font-mono);font-size:14px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
}
.faq-q{font-size:16px;font-weight:600;color:var(--lt-ink);line-height:1.6}
.faq-item.open .faq-q{font-weight:700;color:var(--lt-ink)}
.faq-body{
  padding:0 22px 22px 64px;font-size:15px;line-height:1.85;color:var(--lt-ink2);
  border-left:4px solid transparent;
}
.faq-item.open .faq-body{border-left-color:var(--rk-cyan-deep)}
.side-card{
  position:sticky;top:96px;
  background:#fff;border:1px solid var(--lt-line);border-radius:var(--r-card);
  box-shadow:var(--sh-light);padding:26px;
}
.side-card h3{font-size:17px;font-weight:700;color:var(--lt-ink);margin-bottom:6px}
.side-card .side-sub{font-size:13.5px;color:var(--lt-ink2);margin-bottom:18px}
.side-links{display:flex;flex-direction:column;gap:0}
.side-links a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:14px 0;border-bottom:1px dashed #EDF1F7;
  font-size:14.5px;color:var(--lt-ink);font-weight:500;
}
.side-links a:last-child{border-bottom:0}
.side-links a:hover{color:var(--rk-cyan-deep)}
.side-links a span.arw{font-family:var(--font-mono);color:var(--rk-cyan-deep);font-size:14px}
.side-cta{margin-top:20px;display:flex;flex-direction:column;gap:10px}
.side-cta .btn-glow{width:100%}
.side-cta .btn-ghost{width:100%}

/* ---------- cta band ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  background:var(--rk-dark-1);padding:56px 48px;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-3.png');
  background-size:cover;background-position:center;opacity:.22;
}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(7,19,34,.96) 12%,rgba(10,26,47,.72) 62%,rgba(7,19,34,.9) 100%);
}
.cta-inner{position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:28px;align-items:center;justify-content:space-between}
.cta-inner h2{font-size:clamp(22px,2.6vw,30px);line-height:1.4;font-weight:700;color:var(--rk-t1);margin-bottom:10px}
.cta-inner p{font-size:15px;color:var(--rk-t2);max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ---------- fixed bar ---------- */
.fix-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:1040;
  background:rgba(7,19,34,.94);backdrop-filter:blur(14px);
  border-top:1px solid rgba(0,227,176,.35);
  padding:10px 0 calc(10px + env(safe-area-inset-bottom));
  transform:translateY(115%);transition:transform .32s var(--ease);
}
.fix-bar.is-visible{transform:translateY(0)}
.fix-inner{display:flex;align-items:center;justify-content:space-between;gap:20px}
.fix-text{font-size:14.5px;color:var(--rk-t1)}
.fix-text b{color:var(--rk-cyan)}
.fix-actions{display:flex;gap:12px;align-items:center}
.fix-actions .btn-glow{height:44px;padding:0 20px;font-size:14.5px}
.fix-actions .btn-ghost-dark{height:44px;padding:0 18px;font-size:14.5px}

/* ---------- footer ---------- */
.site-footer{background:var(--rk-dark-1);padding:64px 0 0;color:var(--rk-t2)}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;color:var(--rk-t1);font-size:17px;font-weight:700}
.foot-desc{font-size:14px;line-height:1.95;color:var(--rk-t2);max-width:340px}
.foot-col h4{font-size:15px;font-weight:700;color:var(--rk-t1);margin-bottom:16px}
.foot-col li{margin-bottom:10px}
.foot-col a{font-size:14px;color:var(--rk-t2)}
.foot-col a:hover{color:var(--rk-cyan-hi)}
.foot-contact{font-size:14px;line-height:2;color:var(--rk-t2)}
.foot-contact b{color:#c9d8ea;font-weight:600}
.foot-bottom{
  margin-top:48px;border-top:1px solid rgba(255,255,255,.1);
  padding:20px 0 28px;display:flex;flex-wrap:wrap;gap:10px;
  justify-content:space-between;font-size:13px;color:var(--rk-t3);
}

/* ---------- motion ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.in{opacity:1;transform:none}

@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  .reveal{opacity:1;transform:none}
}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .rk-container{padding:0 20px}
}
@media (max-width:991px){
  .section{padding:64px 0}
  .section-sm{padding:44px 0}
  .nav-toggle{display:inline-flex}
  .nav-links{display:none}
  .nav-links.open{
    display:flex;flex-direction:column;align-items:stretch;gap:0;
    position:absolute;top:100%;left:0;right:0;margin:0;
    background:#fff;padding:8px 24px 18px;
    border-bottom:1px solid var(--lt-line);
    box-shadow:0 16px 32px rgba(16,42,80,.12);
  }
  .nav-links.open a{padding:15px 0;border-bottom:1px dashed #EEF2F7;font-size:15px}
  .nav-links.open a.active{color:var(--rk-cyan-deep)}
  .nav-links.open a.active::after{display:none}
  .nav-search{display:none}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero-sub{max-width:100%}
  .split{grid-template-columns:1fr;gap:28px}
  .faq-layout{grid-template-columns:1fr;gap:28px}
  .side-card{position:static}
  .order-strip{grid-template-columns:1fr;gap:16px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-band{padding:40px 28px}
}
@media (max-width:767px){
  body{padding-bottom:calc(76px + env(safe-area-inset-bottom))}
  .fix-bar{transform:translateY(0)}
  .nav-inner{height:60px;gap:12px}
  .brand-text{font-size:15px}
  .btn-nav{padding:0 14px;font-size:13.5px}
  .cat-hero{padding:40px 0 48px}
  .hero-facts{gap:18px}
  .fact b{font-size:22px}
  .hero-card{padding:22px}
  .faq-body{padding-left:22px}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .fix-text{display:none}
  .fix-actions{width:100%}
  .fix-actions .btn-glow{flex:0 0 62%;width:62%}
  .fix-actions .btn-ghost-dark{flex:1}
}
@media (max-width:575px){
  .rk-container{padding:0 16px}
  .section{padding:48px 0}
  .section-sm{padding:36px 0}
  .cat-hero h1{font-size:26px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn-glow,.hero-actions .btn-ghost{width:100%}
  .foot-grid{grid-template-columns:1fr;gap:28px}
  .cmp-table{min-width:700px}
  .order-item{padding:22px}
}