/* roulang page: index */
:root{
  --cyan:#19E3B1;
  --orange:#FF7A2F;
  --coral:#FF5C7A;
  --lemon:#FFD166;
  --ink:#1B1233;
  --ink-2:#120C24;
  --paper:#F7F5EF;
  --paper-2:#EDE9E1;
  --white:#FFFFFF;
  --card-dark:#241A3D;
  --text:#2B2738;
  --text-2:#6F6A7A;
  --line:#E5DFD5;
  --radius-lg:26px;
  --radius-md:18px;
  --radius-sm:14px;
  --shadow:0 16px 48px rgba(27,18,51,.10);
  --shadow-dark:0 12px 40px rgba(0,0,0,.28);
  --grad:linear-gradient(135deg,#19E3B1 0%,#FFD166 52%,#FF7A2F 100%);
  --grad-cta:linear-gradient(135deg,#FF7A2F 0%,#FF5C7A 100%);
  --container:1240px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:17px;
  line-height:1.75;
  color:var(--text);
  background:var(--paper);
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;}
button,input{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;line-height:1.18;font-weight:800;letter-spacing:-.01em;}
p{margin:0;}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.section{padding:104px 0;}
.section--tight{padding:76px 0;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.08em;
  color:var(--cyan);text-transform:uppercase;
}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--grad);}
.h2{font-size:clamp(27px,3.3vw,40px);font-weight:900;}
.lead{color:var(--text-2);font-size:17px;max-width:660px;}
.section-head{display:flex;flex-wrap:wrap;gap:20px;align-items:flex-end;justify-content:space-between;margin-bottom:52px;}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:90;
  transition:background .28s ease,box-shadow .28s ease,backdrop-filter .28s ease;
}
.site-header.is-scrolled{
  background:rgba(18,12,36,.95);
  box-shadow:0 10px 30px rgba(0,0,0,.30);
  backdrop-filter:blur(10px);
}
.nav-inner{
  max-width:var(--container);margin:0 auto;padding:0 24px;
  height:68px;display:flex;align-items:center;gap:22px;
}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0;}
.brand-mark{
  width:38px;height:38px;border-radius:12px;flex-shrink:0;
  background:var(--grad);display:grid;place-items:center;
  color:#1B1233;font-weight:900;font-size:17px;box-shadow:0 8px 22px rgba(25,227,177,.30);
}
.brand-text{display:flex;flex-direction:column;line-height:1.16;}
.brand-text strong{font-size:15px;font-weight:900;color:#fff;letter-spacing:.01em;}
.brand-text span{font-size:11px;color:rgba(255,255,255,.62);letter-spacing:.12em;}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:12px;}
.nav-links a{
  font-size:14.5px;font-weight:600;color:rgba(255,255,255,.80);
  padding:9px 13px;border-radius:999px;transition:color .2s,background .2s;
  white-space:nowrap;
}
.nav-links a:hover{color:#fff;background:rgba(255,255,255,.10);}
.nav-links a.active{color:#0F0A1F;background:var(--grad);}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:12px;}
.nav-search{position:relative;}
.nav-search input{
  width:190px;height:42px;border-radius:14px;padding:0 16px;
  border:1px solid rgba(255,255,255,.22);background:rgba(255,255,255,.10);
  color:#fff;font-size:14px;transition:border-color .2s,box-shadow .2s,background .2s;
}
.nav-search input::placeholder{color:rgba(255,255,255,.55);}
.nav-search input:focus{
  outline:none;border-color:var(--cyan);background:rgba(255,255,255,.16);
  box-shadow:0 0 0 3px rgba(25,227,177,.24);
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:none;cursor:pointer;font-weight:800;font-size:15px;
  padding:13px 26px;border-radius:999px;white-space:nowrap;
  transition:transform .18s ease,box-shadow .18s ease,filter .18s ease,background .18s ease,color .18s ease;
}
.btn-primary{background:var(--grad-cta);color:#fff;box-shadow:0 12px 30px rgba(255,92,122,.34);}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.06);box-shadow:0 18px 38px rgba(255,92,122,.42);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:rgba(255,255,255,.10);color:#fff;border:1px solid rgba(255,255,255,.30);}
.btn-ghost:hover{background:rgba(25,227,177,.16);border-color:var(--cyan);transform:translateY(-2px);}
.btn-outline{background:var(--white);color:var(--ink);border:1.5px solid var(--cyan);}
.btn-outline:hover{background:rgba(25,227,177,.12);transform:translateY(-2px);}
.btn-sm{padding:10px 20px;font-size:14px;}
.btn:disabled{opacity:.45;cursor:not-allowed;transform:none;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:14px;border:1px solid rgba(255,255,255,.24);
  background:rgba(255,255,255,.10);cursor:pointer;position:relative;
}
.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:#fff;content:"";
}
.nav-toggle span{top:50%;margin-top:-1px;}
.nav-toggle span::before{top:-6px;left:0;transform:none;}
.nav-toggle span::after{top:6px;left:0;transform:none;}

.drawer{
  position:fixed;inset:0 0 0 auto;width:min(360px,88vw);z-index:120;
  background:var(--ink-2);padding:26px 22px 30px;
  transform:translateX(102%);transition:transform .3s ease;
  display:flex;flex-direction:column;gap:20px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-close{background:none;border:none;color:#fff;font-size:26px;cursor:pointer;line-height:1;}
.drawer-group{display:flex;flex-direction:column;gap:6px;}
.drawer-group span{font-size:12px;letter-spacing:.12em;color:rgba(255,255,255,.45);margin-bottom:4px;}
.drawer-group a{
  color:rgba(255,255,255,.86);font-size:15.5px;font-weight:600;
  padding:12px 14px;border-radius:14px;background:rgba(255,255,255,.05);
  transition:background .2s,color .2s;
}
.drawer-group a:hover{background:rgba(25,227,177,.16);color:#fff;}
.drawer-foot{margin-top:auto;display:flex;flex-direction:column;gap:10px;}
.overlay{
  position:fixed;inset:0;background:rgba(9,5,20,.62);z-index:110;
  opacity:0;visibility:hidden;transition:opacity .28s;
}
.overlay.is-open{opacity:1;visibility:visible;}

/* ---------- hero ---------- */
.hero{
  position:relative;overflow:hidden;
  background:linear-gradient(160deg,#1B1233 0%,#120C24 62%,#160E2C 100%);
  padding:calc(68px + 58px) 0 84px;
}
.hero::after{
  content:"";position:absolute;right:-140px;top:-120px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(25,227,177,.24),transparent 68%);pointer-events:none;
}
.hero-grid{
  display:grid;grid-template-columns:58% 42%;gap:48px;align-items:center;
  position:relative;z-index:2;
}
.hero h1{
  color:#fff;font-size:clamp(30px,4.6vw,58px);font-weight:900;line-height:1.1;
  margin:20px 0 20px;
}
.hero h1 em{
  font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{color:rgba(255,255,255,.78);font-size:17.5px;max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:32px 0 34px;}
.hero-stats{display:flex;flex-wrap:wrap;gap:14px;}
.stat{
  border-radius:999px;padding:10px 18px;
  border:1px solid rgba(255,255,255,.16);background:rgba(255,255,255,.06);
  display:flex;align-items:baseline;gap:9px;
}
.stat b{font-size:20px;font-weight:900;color:var(--lemon);}
.stat i{font-style:normal;font-size:12.5px;color:rgba(255,255,255,.66);}
.progress-block{margin-top:34px;max-width:520px;}
.progress-label{display:flex;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.66);margin-bottom:9px;}
.progress-track{height:10px;border-radius:999px;background:rgba(255,255,255,.14);overflow:hidden;}
.progress-fill{height:100%;width:76%;border-radius:999px;background:var(--grad);}
.hero-visual{position:relative;}
.hero-visual img{
  width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:var(--radius-lg);
  box-shadow:var(--shadow-dark);
}
.hero-visual::before{
  content:"";position:absolute;inset:0;border-radius:var(--radius-lg);
  background:linear-gradient(135deg,rgba(25,227,177,.32),rgba(255,122,47,.26));
  mix-blend-mode:screen;pointer-events:none;
}
.float-card{
  position:absolute;background:rgba(18,12,36,.86);border:1px solid rgba(255,255,255,.16);
  border-radius:18px;padding:14px 16px;backdrop-filter:blur(8px);
  box-shadow:var(--shadow-dark);
}
.float-card b{display:block;font-size:22px;font-weight:900;color:var(--cyan);}
.float-card span{font-size:12px;color:rgba(255,255,255,.66);}
.float-a{left:-18px;bottom:52px;}
.float-b{right:-14px;top:36px;}
.float-b b{color:var(--lemon);}

/* ---------- kv bar ---------- */
.kvbar{
  background:linear-gradient(90deg,rgba(25,227,177,.14),rgba(255,209,102,.14),rgba(255,122,47,.14));
  border-bottom:1px solid var(--line);
}
.kvbar-inner{
  max-width:var(--container);margin:0 auto;padding:18px 24px;
  display:flex;align-items:center;gap:22px;flex-wrap:wrap;
}
.kvbar-tag{
  background:var(--grad);color:#1B1233;font-size:12.5px;font-weight:900;
  padding:6px 14px;border-radius:999px;flex-shrink:0;
}
.kvbar-marquee{flex:1;min-width:220px;font-size:14.5px;color:var(--text-2);overflow:hidden;}
.kvbar-marquee p{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.kvbar-data{display:flex;gap:12px;flex-wrap:wrap;}
.mini-stat{
  background:var(--white);border:1px solid var(--line);border-radius:999px;
  padding:7px 16px;font-size:13px;color:var(--text-2);
}
.mini-stat b{color:var(--ink);font-weight:900;font-size:15px;}

/* ---------- steps ---------- */
.steps-layout{display:grid;grid-template-columns:340px 1fr;gap:60px;align-items:start;}
.steps-sticky{position:sticky;top:100px;}
.steps-sticky .lead{margin-top:16px;font-size:16px;}
.steps-list{position:relative;padding-left:8px;}
.steps-list::before{
  content:"";position:absolute;left:34px;top:20px;bottom:20px;width:2px;
  background:linear-gradient(180deg,var(--cyan),rgba(255,209,102,.7),var(--orange));
}
.step-item{position:relative;padding:0 0 34px 88px;}
.step-item:last-child{padding-bottom:0;}
.step-num{
  position:absolute;left:0;top:0;width:68px;height:68px;border-radius:22px;
  background:var(--white);border:1px solid var(--line);display:grid;place-items:center;
  font-size:24px;font-weight:900;color:var(--ink);box-shadow:var(--shadow);z-index:1;
}
.step-item:first-child .step-num{background:var(--grad);color:#1B1233;border-color:transparent;}
.step-card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:26px 28px;box-shadow:var(--shadow);transition:transform .22s ease,border-color .22s ease;
}
.step-card:hover{transform:translateY(-4px);border-color:rgba(25,227,177,.6);}
.step-card h3{font-size:20px;margin-bottom:10px;}
.step-card p{color:var(--text-2);font-size:15.5px;}
.chips{display:flex;flex-wrap:wrap;gap:9px;margin-top:16px;}
.chip{
  font-size:12.5px;font-weight:700;color:#0E3A2F;background:rgba(25,227,177,.16);
  border:1px solid rgba(25,227,177,.4);border-radius:999px;padding:5px 13px;
}
.chip--orange{color:#8A3A0B;background:rgba(255,122,47,.14);border-color:rgba(255,122,47,.38);}
.chip--lemon{color:#7A5800;background:rgba(255,209,102,.24);border-color:rgba(255,209,102,.55);}

/* ---------- rewards ---------- */
.rewards{background:var(--paper-2);}
.reward-grid{
  display:grid;grid-template-columns:repeat(12,1fr);gap:24px;
}
.reward-card{
  grid-column:span 4;background:var(--white);border:1px solid var(--line);
  border-radius:var(--radius-lg);overflow:hidden;display:flex;flex-direction:column;
  box-shadow:var(--shadow);transition:transform .22s ease,border-color .22s ease;
}
.reward-card:hover{transform:translateY(-4px);border-color:rgba(255,122,47,.5);}
.reward-card--wide{grid-column:span 8;}
.reward-card--dark{background:var(--card-dark);border-color:rgba(255,255,255,.12);color:#fff;}
.reward-card--dark .reward-body p{color:rgba(255,255,255,.68);}
.reward-media{position:relative;aspect-ratio:16/9;overflow:hidden;}
.reward-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.reward-card:hover .reward-media img{transform:scale(1.04);}
.rarity{
  position:absolute;left:14px;top:14px;font-size:12px;font-weight:900;
  padding:5px 13px;border-radius:999px;color:#1B1233;background:var(--lemon);
}
.rarity--orange{background:var(--orange);color:#fff;}
.rarity--cyan{background:var(--cyan);color:#0B2A22;}
.rarity--coral{background:var(--coral);color:#fff;}
.reward-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:12px;flex:1;}
.reward-body h3{font-size:19px;}
.reward-body p{font-size:15px;color:var(--text-2);flex:1;}
.reward-meta{display:flex;flex-wrap:wrap;gap:10px;}
.badge{
  font-size:12.5px;font-weight:800;border-radius:999px;padding:6px 14px;
  border:1px solid var(--line);background:var(--paper);color:var(--text-2);
}
.badge b{color:var(--ink);font-size:14px;}
.reward-card--dark .badge{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.16);color:rgba(255,255,255,.72);}
.reward-card--dark .badge b{color:var(--cyan);}
.card-link{
  font-size:14.5px;font-weight:800;color:var(--orange);
  display:inline-flex;align-items:center;gap:7px;
}
.card-link::after{content:"→";transition:transform .2s;}
.card-link:hover::after{transform:translateX(4px);}
.reward-card--dark .card-link{color:var(--cyan);}

/* ---------- timeline ---------- */
.timeline-wrap{overflow-x:auto;padding-bottom:12px;}
.timeline{
  display:grid;grid-template-columns:repeat(4,minmax(230px,1fr));gap:20px;min-width:940px;
}
.tl-card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius-md);
  padding:22px;box-shadow:var(--shadow);position:relative;
}
.tl-card::before{
  content:"";position:absolute;top:0;left:22px;right:22px;height:4px;border-radius:0 0 6px 6px;
  background:var(--grad);
}
.tl-stage{font-size:12px;font-weight:900;letter-spacing:.1em;color:var(--text-2);margin-bottom:10px;}
.tl-card h3{font-size:18px;margin-bottom:10px;}
.tl-card p{font-size:14.5px;color:var(--text-2);min-height:64px;}
.tl-bar{height:8px;border-radius:999px;background:var(--paper-2);overflow:hidden;margin:16px 0 10px;}
.tl-bar i{display:block;height:100%;border-radius:999px;background:var(--grad);}
.tl-foot{display:flex;justify-content:space-between;font-size:12.5px;color:var(--text-2);}
.tl-foot b{color:var(--ink);}
.data-row{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:34px;}
.data-card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius-md);
  padding:24px;box-shadow:var(--shadow);
}
.data-card b{display:block;font-size:34px;font-weight:900;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;}
.data-card span{font-size:13.5px;color:var(--text-2);}

/* ---------- trust ---------- */
.trust{background:var(--ink);color:#fff;}
.trust .h2{color:#fff;}
.trust .lead{color:rgba(255,255,255,.70);}
.trust-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.trust-card{
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);
  border-radius:var(--radius-md);padding:26px;transition:transform .22s,border-color .22s,background .22s;
}
.trust-card:hover{transform:translateY(-4px);border-color:rgba(25,227,177,.55);background:rgba(25,227,177,.08);}
.trust-card h3{font-size:18px;margin:14px 0 10px;}
.trust-card p{font-size:15px;color:rgba(255,255,255,.68);}
.trust-icon{
  width:46px;height:46px;border-radius:14px;background:var(--grad);
  display:grid;place-items:center;font-size:20px;color:#1B1233;font-weight:900;
}

/* ---------- posts ---------- */
.posts{background:var(--paper-2);}
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.post-card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius-lg);
  overflow:hidden;display:flex;flex-direction:column;box-shadow:var(--shadow);
  transition:transform .22s ease,border-color .22s ease;
}
.post-card:hover{transform:translateY(-4px);border-color:rgba(25,227,177,.6);}
.post-thumb{display:block;aspect-ratio:16/9;overflow:hidden;background:var(--paper-2);}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.post-card:hover .post-thumb img{transform:scale(1.05);}
.post-body{padding:22px 24px 26px;display:flex;flex-direction:column;gap:12px;flex:1;}
.post-meta{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-size:12.5px;color:var(--text-2);}
.post-cat{
  background:rgba(25,227,177,.16);color:#0E3A2F;border:1px solid rgba(25,227,177,.4);
  border-radius:999px;padding:4px 12px;font-weight:800;font-size:12px;
}
.post-body h3{font-size:18.5px;line-height:1.4;}
.post-body h3 a{background-image:linear-gradient(var(--cyan),var(--cyan));background-size:0 2px;background-repeat:no-repeat;background-position:0 100%;transition:background-size .25s;}
.post-body h3 a:hover{background-size:100% 2px;}
.post-body p{font-size:15px;color:var(--text-2);flex:1;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.empty{
  grid-column:1/-1;background:var(--white);border:1px dashed var(--line);
  border-radius:var(--radius-lg);padding:56px 24px;text-align:center;color:var(--text-2);
}
.empty strong{display:block;color:var(--ink);font-size:18px;margin-bottom:8px;}

/* ---------- faq ---------- */
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
.faq-item{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius-md);
  overflow:hidden;transition:border-color .2s,box-shadow .2s;
}
.faq-item[open]{border-color:rgba(25,227,177,.65);border-left:4px solid var(--cyan);box-shadow:var(--shadow);background:#FBFFFD;}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 24px;min-height:60px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:17px;font-weight:700;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";font-size:22px;font-weight:700;color:var(--cyan);flex-shrink:0;transition:transform .2s;
}
.faq-item[open] summary::after{content:"−";}
.faq-item .faq-answer{padding:0 24px 22px;font-size:15.5px;line-height:1.8;color:var(--text-2);}

/* ---------- cta ---------- */
.cta-band{
  position:relative;overflow:hidden;background:linear-gradient(140deg,#1B1233,#120C24);
  padding:74px 0;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  opacity:.20;pointer-events:none;
}
.cta-inner{
  position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:32px;
  align-items:center;justify-content:space-between;
}
.cta-inner h2{color:#fff;font-size:clamp(24px,3vw,36px);max-width:620px;}
.cta-inner p{color:rgba(255,255,255,.72);margin-top:14px;max-width:560px;}
.cta-side{display:flex;flex-wrap:wrap;gap:14px;align-items:center;}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-2);color:rgba(255,255,255,.72);padding:72px 0 30px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px;}
.footer-brand .brand-mark{width:40px;height:40px;}
.footer-col h4{color:#fff;font-size:15.5px;margin-bottom:18px;letter-spacing:.02em;}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{font-size:14.5px;color:rgba(255,255,255,.66);transition:color .2s;}
.footer-col a:hover{color:var(--cyan);}
.footer-col p{font-size:14.5px;line-height:1.8;}
.footer-bottom{
  margin-top:52px;padding-top:24px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;font-size:13px;
  color:rgba(255,255,255,.48);
}
.footer-bottom a{color:rgba(255,255,255,.62);}
.footer-bottom a:hover{color:var(--cyan);}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .container,.nav-inner,.kvbar-inner{max-width:1120px;}
  .hero-grid{grid-template-columns:54% 46%;gap:36px;}
  .nav-links a{padding:9px 10px;font-size:14px;}
  .nav-search input{width:150px;}
}
@media (max-width:1099px){
  .nav-links{display:none;}
  .nav-search{display:none;}
  .nav-toggle{display:block;}
  .reward-card{grid-column:span 6;}
  .reward-card--wide{grid-column:span 12;}
  .post-grid{grid-template-columns:repeat(2,1fr);}
  .trust-grid{grid-template-columns:1fr 1fr;}
  .data-row{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:1023px){
  .hero-grid{grid-template-columns:1fr;gap:34px;}
  .hero-visual img{aspect-ratio:16/9;}
  .steps-layout{grid-template-columns:1fr;gap:34px;}
  .steps-sticky{position:static;}
  .float-a{left:10px;bottom:14px;}
  .float-b{right:10px;top:14px;}
  .section{padding:80px 0;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .section{padding:60px 0;}
  .section--tight{padding:52px 0;}
  .section-head{margin-bottom:34px;}
  .hero{padding:calc(68px + 34px) 0 58px;}
  .hero-actions .btn{width:100%;}
  .reward-card,.reward-card--wide{grid-column:span 12;}
  .post-grid{grid-template-columns:1fr;}
  .trust-grid{grid-template-columns:1fr;}
  .faq-grid{grid-template-columns:1fr;}
  .data-row{grid-template-columns:1fr 1fr;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .cta-side{width:100%;}
  .cta-side .btn{width:100%;}
}
@media (max-width:479px){
  .container,.nav-inner,.kvbar-inner{padding:0 18px;}
  .hero h1{font-size:29px;}
  .brand-text strong{font-size:13.5px;}
  .step-item{padding-left:0;padding-top:74px;}
  .steps-list::before{display:none;}
  .data-row{grid-template-columns:1fr;}
  .stat{padding:8px 14px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;}
  html{scroll-behavior:auto;}
}

/* roulang page: article */
:root{
  --brand-1:#19E3B1;
  --brand-2:#FFD166;
  --brand-3:#FF7A2F;
  --coral:#FF5C7A;
  --ink:#1B1233;
  --ink-deep:#120C24;
  --card-dark:#241A3D;
  --paper:#F7F5EF;
  --paper-2:#EDE9E1;
  --white:#FFFFFF;
  --text:#2B2738;
  --muted:#6F6A7A;
  --line:#E5DFD5;
  --line-soft:rgba(27,18,51,.08);
  --radius-xl:28px;
  --radius-lg:24px;
  --radius-md:18px;
  --radius-sm:14px;
  --shadow-lg:0 16px 48px rgba(27,18,51,.10);
  --shadow-md:0 10px 30px rgba(27,18,51,.08);
  --shadow-dark:0 12px 40px rgba(0,0,0,.28);
  --grad:linear-gradient(135deg,#19E3B1 0%,#FFD166 52%,#FF7A2F 100%);
  --grad-cta:linear-gradient(135deg,#FF7A2F 0%,#FF5C7A 100%);
  --container:1240px;
  --nav-h:70px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
body.nav-open{overflow:hidden;}
body.nav-open::after{
  content:"";
  position:fixed;
  inset:0;
  background:rgba(18,12,36,.62);
  backdrop-filter:blur(2px);
  z-index:90;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;transition:color .22s ease,opacity .22s ease;}
a:hover{color:var(--brand-1);}
button,input{font:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
h1,h2,h3,h4{margin:0;line-height:1.22;font-weight:800;letter-spacing:-.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand-1);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.num{font-variant-numeric:tabular-nums;}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:rgba(18,12,36,.94);
  backdrop-filter:blur(12px);
  border-bottom:1px solid rgba(255,255,255,.07);
  transition:background .28s ease,box-shadow .28s ease;
}
.site-header.is-scrolled{background:rgba(18,12,36,.98);box-shadow:0 10px 30px rgba(0,0,0,.3);}
.nav-inner{
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
  height:var(--nav-h);
  display:flex;
  align-items:center;
  gap:28px;
}
.brand{display:flex;align-items:center;gap:11px;flex:0 0 auto;}
.brand-mark{
  width:38px;height:38px;border-radius:12px;
  display:grid;place-items:center;
  font-weight:900;font-size:18px;color:#120C24;
  background:var(--grad);
  box-shadow:0 6px 18px rgba(25,227,177,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{color:#fff;font-size:15px;font-weight:800;letter-spacing:.01em;}
.brand-text span{color:rgba(255,255,255,.5);font-size:11px;letter-spacing:.16em;}
.nav-links{display:flex;align-items:center;gap:26px;margin-right:auto;}
.nav-links a{
  position:relative;
  color:rgba(255,255,255,.76);
  font-size:14.5px;
  font-weight:500;
  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:var(--grad);
  transform:scaleX(0);transform-origin:left;
  transition:transform .26s ease;
}
.nav-links a:hover{color:#fff;}
.nav-links a:hover::after,
.nav-links a.active::after{transform:scaleX(1);}
.nav-links a.active{color:#fff;}
.nav-right{display:flex;align-items:center;gap:14px;margin-left:auto;}
.nav-search input{
  width:200px;height:42px;
  border-radius:var(--radius-sm);
  border:1px solid rgba(255,255,255,.14);
  background:rgba(255,255,255,.06);
  color:#fff;
  padding:0 14px;
  font-size:14px;
  transition:border-color .22s ease,box-shadow .22s ease,background .22s ease;
}
.nav-search input::placeholder{color:rgba(255,255,255,.42);}
.nav-search input:focus{
  outline:none;
  border-color:var(--brand-1);
  background:rgba(255,255,255,.1);
  box-shadow:0 0 0 3px rgba(25,227,177,.22);
}
.nav-toggle{
  display:none;
  width:42px;height:42px;
  border-radius:12px;
  border:1px solid rgba(255,255,255,.16);
  position:relative;
}
.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:#fff;content:"";
  transition:transform .24s ease,opacity .24s ease;
}
.nav-toggle span{top:calc(50% - 1px);}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
body.nav-open .nav-toggle span{background:transparent;}
body.nav-open .nav-toggle span::before{transform:translateX(-50%) rotate(45deg);top:0;}
body.nav-open .nav-toggle span::after{transform:translateX(-50%) rotate(-45deg);top:0;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:50px;
  padding:0 26px;
  border-radius:999px;
  font-size:15.5px;
  font-weight:700;
  letter-spacing:.02em;
  transition:transform .22s ease,box-shadow .22s ease,filter .22s ease,background .22s ease,color .22s ease;
  white-space:nowrap;
}
.btn-primary{
  background:var(--grad-cta);
  color:#fff;
  box-shadow:0 12px 28px rgba(255,92,122,.3);
}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.05);color:#fff;box-shadow:0 16px 34px rgba(255,92,122,.38);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{
  background:transparent;
  color:var(--ink);
  border:1.5px solid rgba(25,227,177,.55);
}
.btn-ghost:hover{background:rgba(25,227,177,.1);color:var(--ink);transform:translateY(-2px);}
.btn-light{
  background:rgba(255,255,255,.12);
  color:#fff;
  border:1px solid rgba(255,255,255,.22);
}
.btn-light:hover{background:rgba(255,255,255,.2);color:#fff;transform:translateY(-2px);}
.btn-sm{height:42px;padding:0 20px;font-size:14px;}

/* ---------- article hero ---------- */
.article-hero{
  position:relative;
  background:
    linear-gradient(140deg,rgba(18,12,36,.94) 0%,rgba(27,18,51,.88) 45%,rgba(36,26,61,.82) 100%),
    url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
  color:#fff;
  padding:56px 0 76px;
  overflow:hidden;
}
.article-hero::after{
  content:"";
  position:absolute;inset:auto -10% -60% auto;
  width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(25,227,177,.28) 0%,rgba(255,122,47,.12) 45%,transparent 70%);
  pointer-events:none;
}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13.5px;color:rgba(255,255,255,.6);
  margin-bottom:22px;
}
.breadcrumb a{color:rgba(255,255,255,.78);}
.breadcrumb a:hover{color:var(--brand-1);}
.breadcrumb .sep{color:rgba(255,255,255,.32);}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  height:32px;padding:0 14px;
  border-radius:999px;
  background:rgba(255,255,255,.1);
  border:1px solid rgba(25,227,177,.4);
  color:var(--brand-1);
  font-size:12.5px;font-weight:700;letter-spacing:.08em;
  margin-bottom:20px;
}
.hero-tag i{width:7px;height:7px;border-radius:50%;background:var(--brand-1);box-shadow:0 0 0 4px rgba(25,227,177,.18);}
.article-hero h1{
  font-size:clamp(28px,4vw,48px);
  line-height:1.2;
  max-width:900px;
  margin-bottom:22px;
  letter-spacing:-.02em;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px 20px;
  font-size:14px;color:rgba(255,255,255,.66);
}
.article-meta .chip{
  display:inline-flex;align-items:center;gap:7px;
  padding:5px 14px;border-radius:999px;
  background:rgba(255,255,255,.09);
  border:1px solid rgba(255,255,255,.14);
  color:rgba(255,255,255,.85);
  font-size:13px;
}
.article-meta .chip.is-accent{
  background:linear-gradient(135deg,rgba(25,227,177,.22),rgba(255,122,47,.22));
  border-color:rgba(25,227,177,.4);
  color:#EAFFF9;
}

/* ---------- layout ---------- */
.article-main{padding:64px 0 88px;}
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 312px;
  gap:36px;
  align-items:start;
}
.panel{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--radius-xl);
  box-shadow:var(--shadow-lg);
}
.article-card{padding:48px 52px 56px;}
.article-lead{
  font-size:17px;
  line-height:1.85;
  color:var(--muted);
  padding:20px 24px;
  border-radius:var(--radius-md);
  background:var(--paper);
  border-left:4px solid var(--brand-1);
  margin-bottom:36px;
}

/* ---------- rich text ---------- */
.rich-text{font-size:17px;line-height:1.9;color:var(--text);}
.rich-text > * + *{margin-top:20px;}
.rich-text p{font-size:17px;line-height:1.9;color:#3A3547;}
.rich-text h2{
  position:relative;
  font-size:clamp(22px,2.4vw,28px);
  font-weight:800;
  color:var(--ink);
  margin-top:48px;
  padding-left:18px;
  line-height:1.35;
}
.rich-text h2::before{
  content:"";
  position:absolute;left:0;top:.22em;bottom:.22em;width:5px;
  border-radius:4px;
  background:var(--grad);
}
.rich-text h3{
  font-size:20px;
  font-weight:800;
  color:var(--ink);
  margin-top:34px;
}
.rich-text h4{font-size:17.5px;font-weight:700;color:var(--ink);margin-top:26px;}
.rich-text ul,.rich-text ol{padding-left:4px;display:grid;gap:10px;}
.rich-text ul li,
.rich-text ol li{
  position:relative;
  padding-left:24px;
  color:#3A3547;
}
.rich-text ul li::before{
  content:"";
  position:absolute;left:4px;top:.72em;
  width:8px;height:8px;border-radius:50%;
  background:var(--grad);
}
.rich-text ol{counter-reset:item;}
.rich-text ol li::before{
  counter-increment:item;
  content:counter(item);
  position:absolute;left:0;top:.18em;
  width:18px;height:18px;border-radius:6px;
  display:grid;place-items:center;
  font-size:11.5px;font-weight:800;color:#120C24;
  background:linear-gradient(135deg,#19E3B1,#FFD166);
}
.rich-text blockquote{
  margin:30px 0;
  padding:20px 26px;
  border-left:4px solid var(--brand-1);
  border-radius:0 var(--radius-md) var(--radius-md) 0;
  background:rgba(25,227,177,.07);
  color:#2F4B44;
  font-size:16.5px;
}
.rich-text img{
  border-radius:20px;
  box-shadow:var(--shadow-md);
  margin:28px auto;
  height:auto;
}
.rich-text a{color:#0FA98A;border-bottom:1px solid rgba(15,169,138,.35);}
.rich-text a:hover{color:var(--brand-3);border-color:rgba(255,122,47,.5);}
.rich-text table{
  width:100%;
  border-collapse:separate;
  border-spacing:0;
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  overflow:hidden;
  font-size:15.5px;
  margin:28px 0;
}
.rich-text th,
.rich-text td{padding:12px 16px;text-align:left;border-bottom:1px solid var(--line);}
.rich-text th{background:var(--paper-2);font-weight:700;color:var(--ink);}
.rich-text tr:last-child td{border-bottom:0;}
.rich-text code{
  background:var(--paper-2);
  padding:2px 7px;
  border-radius:6px;
  font-size:14.5px;
  color:#B8471F;
}
.rich-text hr{border:0;height:1px;background:var(--line);margin:36px 0;}

/* ---------- empty ---------- */
.empty-state{
  text-align:center;
  padding:70px 24px;
  border:1.5px dashed var(--line);
  border-radius:var(--radius-lg);
  background:var(--paper);
}
.empty-state .empty-icon{
  width:64px;height:64px;margin:0 auto 18px;border-radius:20px;
  display:grid;place-items:center;
  background:linear-gradient(135deg,rgba(25,227,177,.18),rgba(255,122,47,.18));
  font-size:26px;color:var(--brand-3);font-weight:900;
}
.empty-state h3{font-size:20px;color:var(--ink);margin-bottom:10px;}
.empty-state p{color:var(--muted);font-size:15px;margin-bottom:22px;}

/* ---------- sidebar ---------- */
.sidebar{display:grid;gap:22px;position:sticky;top:calc(var(--nav-h) + 22px);}
.side-card{padding:26px 24px;border-radius:var(--radius-lg);}
.side-card h4{
  font-size:15px;font-weight:800;color:var(--ink);
  display:flex;align-items:center;gap:9px;
  margin-bottom:16px;
}
.side-card h4::before{
  content:"";width:5px;height:16px;border-radius:3px;background:var(--grad);
}
.toc-list{display:grid;gap:2px;max-height:340px;overflow:auto;}
.toc-list a{
  display:block;
  padding:9px 12px;
  border-radius:10px;
  font-size:14px;
  color:var(--muted);
  border-left:2px solid transparent;
  line-height:1.55;
}
.toc-list a:hover{background:var(--paper);color:var(--ink);}
.toc-list a.is-active{
  color:#0E9C7F;
  background:rgba(25,227,177,.09);
  border-left-color:var(--brand-1);
  font-weight:600;
}
.toc-list a.lv3{padding-left:26px;font-size:13.5px;}
.side-list{display:grid;gap:12px;}
.side-list a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:12px 14px;
  border-radius:var(--radius-sm);
  background:var(--paper);
  font-size:14.5px;font-weight:600;color:var(--ink);
  transition:background .22s ease,transform .22s ease,color .22s ease;
}
.side-list a span{color:var(--brand-3);font-weight:800;}
.side-list a:hover{background:rgba(25,227,177,.12);transform:translateX(3px);color:var(--ink);}
.side-cta{
  background:linear-gradient(150deg,#241A3D 0%,#120C24 100%);
  border:1px solid rgba(255,255,255,.08);
  color:#fff;
  padding:26px 24px;
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-dark);
}
.side-cta h4{color:#fff;font-size:17px;font-weight:800;margin-bottom:8px;}
.side-cta p{font-size:13.8px;color:rgba(255,255,255,.66);line-height:1.75;margin-bottom:18px;}
.side-cta .btn{width:100%;}
.side-cta .btn + .btn{margin-top:10px;}

/* ---------- badges ---------- */
.badge-row{display:flex;flex-wrap:wrap;gap:10px;}
.badge{
  display:inline-flex;align-items:baseline;gap:6px;
  padding:8px 15px;
  border-radius:999px;
  background:var(--white);
  border:1px solid var(--line);
  box-shadow:var(--shadow-md);
  font-size:12.5px;color:var(--muted);
}
.badge b{font-size:17px;color:var(--ink);font-weight:800;font-variant-numeric:tabular-nums;}
.badge.is-dark{
  background:rgba(255,255,255,.08);
  border-color:rgba(255,255,255,.16);
  color:rgba(255,255,255,.66);
}
.badge.is-dark b{color:var(--brand-1);}

/* ---------- related ---------- */
.related{padding:0 0 88px;}
.section-head{margin-bottom:30px;}
.section-head .eyebrow{
  display:inline-block;
  font-size:12.5px;font-weight:800;letter-spacing:.16em;
  color:var(--brand-3);
  text-transform:uppercase;
  margin-bottom:10px;
}
.section-head h2{font-size:clamp(24px,3vw,32px);color:var(--ink);}
.section-head p{margin-top:10px;color:var(--muted);font-size:15.5px;max-width:640px;}
.related-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px;}
.related-card{
  display:flex;flex-direction:column;
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  overflow:hidden;
  box-shadow:var(--shadow-md);
  transition:transform .26s ease,box-shadow .26s ease,border-color .26s ease;
}
.related-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-lg);
  border-color:rgba(25,227,177,.55);
}
.related-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--paper-2);}
.related-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.related-card:hover .related-thumb img{transform:scale(1.05);}
.related-body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:9px;flex:1;}
.related-body .tag{
  align-self:flex-start;
  font-size:11.5px;font-weight:700;letter-spacing:.08em;
  padding:4px 11px;border-radius:999px;
  background:rgba(25,227,177,.13);
  color:#0E9C7F;
}
.related-body h3{font-size:16.5px;line-height:1.45;color:var(--ink);font-weight:800;}
.related-body p{font-size:13.8px;color:var(--muted);line-height:1.7;}
.related-body .arrow{
  margin-top:auto;font-size:13.5px;font-weight:700;color:var(--brand-3);
  display:inline-flex;align-items:center;gap:6px;
}
.related-card:hover .arrow{color:var(--coral);}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;
  border-radius:var(--radius-xl);
  overflow:hidden;
  padding:56px 52px;
  color:#fff;
  background:
    linear-gradient(120deg,rgba(18,12,36,.94),rgba(36,26,61,.86)),
    url("/assets/images/backpic/back-3.webp") center/cover no-repeat;
  box-shadow:var(--shadow-dark);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:36px;
  flex-wrap:wrap;
}
.cta-band::before{
  content:"";
  position:absolute;right:-80px;top:-90px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,122,47,.35),transparent 68%);
}
.cta-copy{position:relative;max-width:560px;}
.cta-copy h2{font-size:clamp(24px,3vw,34px);margin-bottom:12px;}
.cta-copy p{color:rgba(255,255,255,.72);font-size:15.5px;line-height:1.8;}
.cta-actions{position:relative;display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- footer ---------- */
.site-footer{
  background:var(--ink-deep);
  color:rgba(255,255,255,.68);
  padding:64px 0 30px;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:44px;
  border-bottom:1px solid rgba(255,255,255,.09);
}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:18px;}
.footer-col p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.55);max-width:340px;}
.footer-col h4{color:#fff;font-size:15px;font-weight:800;margin-bottom:16px;}
.footer-col ul{display:grid;gap:10px;}
.footer-col ul a{font-size:14px;color:rgba(255,255,255,.62);}
.footer-col ul a:hover{color:var(--brand-1);}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding-top:24px;
  font-size:13px;
  color:rgba(255,255,255,.45);
}

/* ---------- back to top ---------- */
.to-top{
  position:fixed;right:24px;bottom:28px;z-index:60;
  width:48px;height:48px;border-radius:50%;
  display:grid;place-items:center;
  background:var(--grad-cta);color:#fff;font-size:18px;font-weight:800;
  box-shadow:0 14px 30px rgba(255,92,122,.34);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .26s ease,transform .26s ease,visibility .26s ease;
}
.to-top.is-visible{opacity:1;visibility:visible;transform:none;}
.to-top:hover{filter:brightness(1.06);transform:translateY(-2px);color:#fff;}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .container,.nav-inner{padding:0 20px;}
  .related-grid{grid-template-columns:repeat(3,minmax(0,1fr));}
  .article-layout{grid-template-columns:minmax(0,1fr) 288px;gap:28px;}
  .article-card{padding:40px 36px 46px;}
}
@media (max-width:1023px){
  .nav-search{display:none;}
  .nav-toggle{display:block;}
  .nav-links{
    position:fixed;
    top:0;right:0;
    z-index:110;
    height:100vh;
    width:min(330px,86vw);
    background:linear-gradient(180deg,#1B1233 0%,#120C24 100%);
    flex-direction:column;
    align-items:stretch;
    gap:4px;
    padding:96px 24px 40px;
    transform:translateX(100%);
    transition:transform .3s ease;
    box-shadow:-20px 0 50px rgba(0,0,0,.4);
    margin-right:0;
    overflow-y:auto;
  }
  body.nav-open .nav-links{transform:none;}
  .nav-links a{
    padding:14px 14px;
    border-radius:12px;
    font-size:15.5px;
    color:rgba(255,255,255,.82);
  }
  .nav-links a::after{display:none;}
  .nav-links a:hover,
  .nav-links a.active{background:rgba(25,227,177,.12);color:#fff;}
  .article-layout{grid-template-columns:minmax(0,1fr);}
  .sidebar{position:static;}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .article-hero{padding:40px 0 58px;}
  .cta-band{padding:44px 34px;}
}
@media (max-width:767px){
  :root{--nav-h:64px;}
  .brand-text strong{font-size:13.5px;}
  .brand-text span{font-size:10px;}
  .article-main{padding:44px 0 64px;}
  .article-card{padding:28px 22px 34px;border-radius:var(--radius-lg);}
  .article-lead{font-size:15.8px;padding:16px 18px;}
  .rich-text,.rich-text p{font-size:16.2px;}
  .rich-text h2{font-size:21px;margin-top:36px;}
  .rich-text h3{font-size:18.5px;}
  .related{padding-bottom:64px;}
  .related-grid{grid-template-columns:minmax(0,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .footer-col p{max-width:none;}
  .cta-band{padding:36px 24px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
  .btn{height:48px;padding:0 22px;font-size:15px;}
  .to-top{right:16px;bottom:18px;width:44px;height:44px;}
}
@media (max-width:520px){
  .container,.nav-inner{padding:0 16px;}
  .article-hero h1{font-size:26px;}
  .breadcrumb{font-size:12.5px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .cta-actions{flex-direction:column;}
  .cta-actions .btn{width:100%;}
  .article-meta{gap:10px 12px;font-size:13px;}
}

/* roulang page: category1 */
:root{
  --ink:#1B1233;
  --ink-2:#120C24;
  --ink-3:#241A3D;
  --paper:#F7F5EF;
  --paper-2:#EDE9E1;
  --white:#FFFFFF;
  --text:#2B2738;
  --muted:#6F6A7A;
  --line:#E5DFD5;
  --teal:#19E3B1;
  --orange:#FF7A2F;
  --coral:#FF5C7A;
  --lemon:#FFD166;
  --grad:linear-gradient(135deg,#19E3B1 0%,#FFD166 52%,#FF7A2F 100%);
  --grad-cta:linear-gradient(135deg,#FF7A2F 0%,#FF5C7A 100%);
  --grad-dark:linear-gradient(150deg,#1B1233 0%,#120C24 100%);
  --r-xl:28px;
  --r-lg:24px;
  --r-md:18px;
  --r-sm:14px;
  --pill:999px;
  --sh-soft:0 16px 48px rgba(27,18,51,.10);
  --sh-card:0 10px 30px rgba(27,18,51,.07);
  --sh-dark:0 12px 40px rgba(0,0,0,.28);
  --nav-h:68px;
  --container:1240px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","HarmonyOS Sans",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.nav-open{overflow:hidden;}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button,input{font:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
h1,h2,h3,h4{margin:0;font-weight:800;line-height:1.18;letter-spacing:-.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--teal);outline-offset:2px;border-radius:6px;}
::selection{background:rgba(25,227,177,.28);}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.section{padding:100px 0;}
.section-tight{padding:72px 0;}
.section-head{max-width:760px;margin-bottom:48px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:700;letter-spacing:.14em;
  text-transform:uppercase;color:#0F9E7C;
  background:rgba(25,227,177,.14);
  border:1px solid rgba(25,227,177,.34);
  padding:6px 14px;border-radius:var(--pill);
}
.eyebrow.on-dark{color:#8FF3DC;background:rgba(25,227,177,.12);border-color:rgba(25,227,177,.3);}
.section-title{font-size:clamp(26px,3.2vw,40px);margin:16px 0 14px;}
.section-sub{color:var(--muted);font-size:16.5px;max-width:660px;}
.on-dark .section-sub,.section-sub.on-dark{color:rgba(255,255,255,.66);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-weight:700;font-size:15.5px;
  padding:14px 26px;border-radius:var(--pill);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background-color .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
  white-space:nowrap;
}
.btn-sm{padding:10px 20px;font-size:14.5px;}
.btn-primary{background:var(--grad-cta);color:#fff;box-shadow:0 12px 28px rgba(255,92,122,.28);}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.05);box-shadow:0 16px 34px rgba(255,92,122,.34);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:var(--white);color:#12866C;border:1.5px solid rgba(25,227,177,.55);}
.btn-ghost:hover{background:rgba(25,227,177,.12);transform:translateY(-2px);}
.btn-ghost-dark{background:rgba(255,255,255,.1);color:#fff;border:1.5px solid rgba(255,255,255,.28);}
.btn-ghost-dark:hover{background:rgba(255,255,255,.18);transform:translateY(-2px);}
.btn:disabled,.btn.is-disabled{opacity:.45;pointer-events:none;}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:120;
  height:var(--nav-h);
  display:flex;align-items:center;
  background:transparent;
  transition:background-color .3s var(--ease),box-shadow .3s var(--ease),backdrop-filter .3s var(--ease);
}
.site-header.is-scrolled{background:rgba(18,12,36,.95);box-shadow:0 8px 30px rgba(0,0,0,.28);backdrop-filter:blur(10px);}
.nav-inner{
  width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;
  display:flex;align-items:center;gap:28px;
}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.brand-mark{
  width:38px;height:38px;border-radius:12px;
  display:grid;place-items:center;
  background:var(--grad);color:#1B1233;
  font-weight:900;font-size:18px;
  box-shadow:0 8px 20px rgba(25,227,177,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{color:#fff;font-size:15px;font-weight:800;letter-spacing:.01em;}
.brand-text span{color:rgba(255,255,255,.5);font-size:11px;letter-spacing:.16em;}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:8px;flex:1 1 auto;}
.nav-links a{
  position:relative;
  padding:9px 14px;border-radius:var(--pill);
  font-size:14.5px;font-weight:600;color:rgba(255,255,255,.72);
  transition:color .2s var(--ease),background-color .2s var(--ease);
}
.nav-links a:hover{color:#fff;background:rgba(255,255,255,.1);}
.nav-links a.active{color:#0F2C25;background:var(--grad);}
.nav-right{display:flex;align-items:center;gap:12px;margin-left:auto;flex:0 0 auto;}
.nav-search input{
  width:186px;height:44px;padding:0 16px;
  border-radius:var(--r-sm);
  border:1.5px solid rgba(255,255,255,.18);
  background:rgba(255,255,255,.08);
  color:#fff;font-size:14px;
  transition:border-color .22s var(--ease),background-color .22s var(--ease),width .28s var(--ease);
}
.nav-search input::placeholder{color:rgba(255,255,255,.5);}
.nav-search input:focus{outline:none;border-color:var(--teal);background:rgba(255,255,255,.14);width:214px;box-shadow:0 0 0 3px rgba(25,227,177,.22);}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-sm);
  background:rgba(255,255,255,.1);
  border:1.5px solid rgba(255,255,255,.18);
  position:relative;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  position:absolute;left:50%;transform:translateX(-50%);
  width:20px;height:2px;border-radius:2px;background:#fff;content:"";
  transition:transform .28s var(--ease),opacity .28s var(--ease);
}
.nav-toggle span{top:50%;margin-top:-1px;}
.nav-toggle span::before{top:-7px;}
.nav-toggle span::after{top:7px;}
body.nav-open .nav-toggle span{background:transparent;}
body.nav-open .nav-toggle span::before{transform:translateX(-50%) translateY(7px) rotate(45deg);}
body.nav-open .nav-toggle span::after{transform:translateX(-50%) translateY(-7px) rotate(-45deg);}

/* ---------- 页面 banner ---------- */
.page-hero{
  position:relative;
  padding:calc(var(--nav-h) + 72px) 0 88px;
  background:var(--grad-dark);
  overflow:hidden;
  color:#fff;
}
.page-hero-bg{
  position:absolute;inset:0;width:100%;height:100%;
  object-fit:cover;opacity:.32;
}
.page-hero-mask{
  position:absolute;inset:0;
  background:
    radial-gradient(720px 420px at 82% 18%,rgba(25,227,177,.22),transparent 62%),
    radial-gradient(620px 380px at 12% 92%,rgba(255,122,47,.2),transparent 60%),
    linear-gradient(135deg,rgba(18,12,36,.9) 0%,rgba(18,12,36,.78) 55%,rgba(36,26,61,.86) 100%);
}
.page-hero-inner{position:relative;z-index:2;max-width:900px;}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13.5px;color:rgba(255,255,255,.6);margin-bottom:22px;}
.crumbs a:hover{color:var(--teal);}
.crumbs .sep{opacity:.45;}
.crumbs .now{color:rgba(255,255,255,.9);font-weight:600;}
.page-hero h1{
  font-size:clamp(30px,4.6vw,56px);
  margin:18px 0 20px;
  letter-spacing:-.02em;
}
.page-hero h1 em{
  font-style:normal;
  background:var(--grad);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.page-hero .lead{
  font-size:17.5px;color:rgba(255,255,255,.76);max-width:680px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px;}
.kpi-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:38px;}
.kpi{
  min-width:150px;
  padding:14px 20px;border-radius:var(--r-md);
  background:rgba(255,255,255,.07);
  border:1px solid rgba(255,255,255,.14);
  backdrop-filter:blur(4px);
}
.kpi b{display:block;font-size:26px;font-weight:900;font-variant-numeric:tabular-nums;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1.25;}
.kpi span{font-size:12.5px;color:rgba(255,255,255,.62);letter-spacing:.06em;}

/* ---------- 主体两栏 ---------- */
.layout{display:grid;grid-template-columns:264px minmax(0,1fr);gap:56px;align-items:start;}
.toc{
  position:sticky;top:calc(var(--nav-h) + 28px);
  padding:26px 22px;
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-card);
}
.toc h3{font-size:15px;letter-spacing:.08em;color:var(--muted);font-weight:700;margin-bottom:16px;}
.toc ol{display:flex;flex-direction:column;gap:4px;counter-reset:toc;}
.toc li{counter-increment:toc;}
.toc a{
  display:flex;align-items:center;gap:10px;
  padding:9px 12px;border-radius:var(--r-sm);
  font-size:14.5px;color:#3A3547;font-weight:600;
  transition:background-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.toc a::before{
  content:counter(toc,decimal-leading-zero);
  font-size:12px;font-weight:800;color:#12A181;
  font-variant-numeric:tabular-nums;
}
.toc a:hover{background:rgba(25,227,177,.12);color:#0F9E7C;transform:translateX(3px);}
.toc .toc-cta{
  margin-top:20px;padding-top:20px;border-top:1px dashed var(--line);
  display:block;font-size:13.5px;color:var(--muted);
}
.toc .toc-cta a{display:inline-flex;margin-top:10px;padding:10px 18px;background:var(--grad-cta);color:#fff;border-radius:var(--pill);font-size:14px;}
.toc .toc-cta a::before{display:none;}

/* ---------- 步骤卡 ---------- */
.steps{display:flex;flex-direction:column;gap:0;}
.step{
  position:relative;
  display:grid;grid-template-columns:78px minmax(0,1fr);gap:24px;
  padding:0 0 34px 0;
}
.step:last-child{padding-bottom:0;}
.step::before{
  content:"";position:absolute;left:38px;top:78px;bottom:6px;width:2px;
  background:linear-gradient(180deg,rgba(25,227,177,.55),rgba(255,122,47,.28));
  border-radius:2px;
}
.step:last-child::before{display:none;}
.step-num{
  width:78px;height:78px;border-radius:24px;
  display:grid;place-items:center;
  font-size:26px;font-weight:900;font-variant-numeric:tabular-nums;
  color:#0F2C25;background:var(--grad);
  box-shadow:0 14px 32px rgba(25,227,177,.26);
}
.step-body{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:26px 28px;
  box-shadow:var(--sh-card);
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.step-body:hover{transform:translateY(-4px);box-shadow:var(--sh-soft);border-color:rgba(25,227,177,.5);}
.step-body h3{font-size:21px;margin-bottom:10px;}
.step-body p{color:var(--muted);font-size:15.5px;}
.step-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12.5px;font-weight:700;
  padding:5px 12px;border-radius:var(--pill);
  background:var(--paper-2);color:#4A4557;
}
.tag.teal{background:rgba(25,227,177,.16);color:#0E8E71;}
.tag.warm{background:rgba(255,122,47,.14);color:#C2521A;}
.tag.lemon{background:rgba(255,209,102,.24);color:#8A6410;}

/* ---------- 提示条 ---------- */
.notice{
  display:flex;gap:16px;align-items:flex-start;
  margin-top:44px;padding:22px 24px;
  border-radius:var(--r-lg);
  background:linear-gradient(135deg,rgba(25,227,177,.1),rgba(255,209,102,.14));
  border:1px solid rgba(25,227,177,.34);
}
.notice-ico{
  flex:0 0 auto;width:38px;height:38px;border-radius:12px;
  display:grid;place-items:center;background:var(--grad);color:#14302A;font-weight:900;
}
.notice h4{font-size:16px;margin-bottom:4px;}
.notice p{font-size:14.5px;color:#4E4A5C;}

/* ---------- 场景卡片 ---------- */
.device-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;}
.device-card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--sh-card);
  display:flex;flex-direction:column;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.device-card:hover{transform:translateY(-5px);box-shadow:var(--sh-soft);border-color:rgba(255,122,47,.45);}
.device-card .thumb{position:relative;aspect-ratio:16/10;background:var(--paper-2);}
.device-card .thumb img{width:100%;height:100%;object-fit:cover;}
.device-card .thumb::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(27,18,51,0) 40%,rgba(27,18,51,.55) 100%);
}
.device-card .body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.device-card h3{font-size:18px;}
.device-card p{font-size:14.5px;color:var(--muted);flex:1;}
.card-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:700;color:#0F9E7C;
}
.card-link::after{content:"→";transition:transform .22s var(--ease);}
.card-link:hover::after{transform:translateX(4px);}

/* ---------- 处理清单 ---------- */
.issues{background:var(--grad-dark);color:#fff;border-radius:var(--r-xl);padding:56px 48px;position:relative;overflow:hidden;}
.issues::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(560px 320px at 88% 8%,rgba(25,227,177,.2),transparent 62%);
}
.issues-inner{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,340px) minmax(0,1fr);gap:48px;align-items:start;}
.issues h2{font-size:clamp(24px,2.6vw,34px);margin-bottom:14px;}
.issues .section-sub{color:rgba(255,255,255,.66);}
.issue-list{display:grid;gap:14px;}
.issue{
  display:grid;grid-template-columns:44px minmax(0,1fr);gap:16px;
  padding:18px 20px;border-radius:var(--r-md);
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.12);
  transition:background-color .22s var(--ease),transform .22s var(--ease);
}
.issue:hover{background:rgba(255,255,255,.12);transform:translateX(4px);}
.issue .dot{
  width:44px;height:44px;border-radius:14px;display:grid;place-items:center;
  background:rgba(255,209,102,.18);border:1px solid rgba(255,209,102,.4);
  color:var(--lemon);font-weight:900;font-size:15px;font-variant-numeric:tabular-nums;
}
.issue h4{font-size:16.5px;margin-bottom:4px;}
.issue p{font-size:14.5px;color:rgba(255,255,255,.68);}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px;margin:0 auto;}
.faq-item{
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-md);
  margin-bottom:12px;overflow:hidden;
  transition:border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.faq-item:hover{border-color:rgba(25,227,177,.5);}
.faq-item.is-open{border-color:var(--teal);box-shadow:0 12px 30px rgba(25,227,177,.14);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;min-height:60px;
  font-size:16.5px;font-weight:700;text-align:left;color:var(--text);
}
.faq-q .plus{
  flex:0 0 auto;width:28px;height:28px;border-radius:9px;
  display:grid;place-items:center;
  background:var(--paper-2);color:#3A3547;font-weight:900;
  transition:transform .26s var(--ease),background-color .26s var(--ease),color .26s var(--ease);
}
.faq-item.is-open .faq-q .plus{background:var(--grad);color:#14302A;transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .34s var(--ease);}
.faq-a p{
  padding:0 24px 22px 24px;font-size:15.5px;line-height:1.85;color:#4E4A5C;
}
.faq-item.is-open .faq-a{max-height:340px;}
.faq-item.is-open .faq-q{color:#0E8E71;}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-xl);
  background:var(--grad-dark);color:#fff;
  padding:60px 56px;
  box-shadow:var(--sh-dark);
}
.cta-band .cta-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.22;}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(600px 320px at 80% 20%,rgba(255,122,47,.26),transparent 62%);
}
.cta-inner{position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:36px;align-items:center;justify-content:space-between;}
.cta-inner h2{font-size:clamp(24px,2.8vw,36px);margin-bottom:12px;}
.cta-inner p{color:rgba(255,255,255,.7);max-width:520px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--grad-dark);color:rgba(255,255,255,.72);padding:72px 0 32px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px;}
.footer-col p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.6);max-width:340px;}
.footer-col h4{font-size:14.5px;color:#fff;margin-bottom:18px;letter-spacing:.06em;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col ul a{font-size:14px;color:rgba(255,255,255,.66);transition:color .2s var(--ease),padding-left .2s var(--ease);}
.footer-col ul a:hover{color:var(--teal);padding-left:4px;}
.footer-bottom{
  margin-top:48px;padding-top:24px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.48);
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{max-width:1120px;}
  .device-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .layout{grid-template-columns:230px minmax(0,1fr);gap:40px;}
  .nav-search input{width:150px;}
}
@media (max-width:1023px){
  .nav-links{
    position:fixed;top:var(--nav-h);right:0;bottom:0;width:300px;
    flex-direction:column;align-items:stretch;gap:4px;
    background:rgba(18,12,36,.98);
    padding:24px 20px 100px;
    transform:translateX(104%);
    transition:transform .32s var(--ease);
    overflow-y:auto;
    box-shadow:-16px 0 40px rgba(0,0,0,.34);
  }
  body.nav-open .nav-links{transform:translateX(0);}
  .nav-links a{padding:14px 16px;font-size:15.5px;}
  .nav-toggle{display:block;}
  .nav-search{display:none;}
  .issues{padding:44px 30px;}
  .issues-inner{grid-template-columns:minmax(0,1fr);gap:32px;}
  .section{padding:80px 0;}
  .layout{grid-template-columns:minmax(0,1fr);gap:32px;}
  .toc{position:static;}
}
@media (max-width:767px){
  .container{padding:0 18px;}
  .nav-inner{padding:0 18px;gap:16px;}
  .brand-text strong{font-size:13.5px;}
  .brand-text span{display:none;}
  .brand-mark{width:34px;height:34px;border-radius:10px;font-size:16px;}
  .page-hero{padding:calc(var(--nav-h) + 48px) 0 64px;}
  .page-hero .lead{font-size:16px;}
  .kpi{min-width:calc(50% - 7px);padding:12px 16px;}
  .kpi b{font-size:22px;}
  .hero-actions .btn{flex:1 1 auto;}
  .section{padding:64px 0;}
  .section-tight{padding:52px 0;}
  .step{grid-template-columns:58px minmax(0,1fr);gap:16px;}
  .step-num{width:58px;height:58px;border-radius:18px;font-size:20px;}
  .step::before{left:28px;top:58px;}
  .step-body{padding:20px 20px;}
  .device-grid{grid-template-columns:minmax(0,1fr);}
  .issues{padding:36px 22px;border-radius:24px;}
  .issue{grid-template-columns:36px minmax(0,1fr);padding:16px;}
  .issue .dot{width:36px;height:36px;border-radius:12px;font-size:13px;}
  .faq-q{padding:16px 18px;font-size:15.5px;}
  .faq-a p{padding:0 18px 18px 18px;font-size:15px;}
  .cta-band{padding:40px 24px;border-radius:24px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 100%;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .footer-col p{max-width:none;}
}
@media (max-width:479px){
  .page-hero h1{font-size:28px;}
  .section-title{font-size:24px;}
  .kpi{min-width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .nav-links{width:100%;}
}

/* roulang page: category2 */
:root{
  --ink:#1B1233;
  --ink-2:#120C24;
  --mint:#19E3B1;
  --orange:#FF7A2F;
  --coral:#FF5C7A;
  --lemon:#FFD166;
  --paper:#F7F5EF;
  --paper-2:#EDE9E1;
  --card:#FFFFFF;
  --dark-card:#241A3D;
  --text:#2B2738;
  --muted:#6F6A7A;
  --line:#E5DFD5;
  --brand-grad:linear-gradient(135deg,#19E3B1 0%,#FFD166 52%,#FF7A2F 100%);
  --cta-grad:linear-gradient(135deg,#FF7A2F 0%,#FF5C7A 100%);
  --r-lg:26px;
  --r-md:18px;
  --r-sm:14px;
  --shadow-lg:0 16px 48px rgba(27,18,51,.10);
  --shadow-dark:0 12px 40px rgba(0,0,0,.28);
  --shadow-cta:0 14px 32px rgba(255,92,122,.28);
  --container:1240px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease,opacity .2s ease;}
a:hover{color:var(--mint);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
button,input{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
:focus-visible{outline:2px solid var(--mint);outline-offset:2px;border-radius:8px;}
.num{font-variant-numeric:tabular-nums;}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:90;
  background:rgba(18,12,36,.88);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid rgba(255,255,255,.08);
  transition:background-color .28s ease,box-shadow .28s ease;
}
.site-header.is-scrolled{
  background:rgba(18,12,36,.97);
  box-shadow:0 10px 30px rgba(0,0,0,.35);
}
.nav-inner{
  max-width:var(--container);
  margin:0 auto;
  padding:12px 24px;
  display:flex;
  align-items:center;
  gap:22px;
  min-height:68px;
}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0;}
.brand-mark{
  width:38px;height:38px;flex:0 0 38px;
  border-radius:12px;
  background:var(--brand-grad);
  color:#120C24;
  font-weight:900;
  font-size:19px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 8px 22px rgba(25,227,177,.32);
}
.brand-text{display:flex;flex-direction:column;line-height:1.16;}
.brand-text strong{font-size:15px;font-weight:800;color:#fff;letter-spacing:.01em;}
.brand-text span{font-size:11px;color:rgba(255,255,255,.5);letter-spacing:.14em;}
.nav-links{display:flex;align-items:center;gap:4px;}
.nav-links a{
  position:relative;
  padding:9px 13px;
  font-size:14px;
  font-weight:600;
  color:rgba(255,255,255,.74);
  border-radius:10px;
  white-space:nowrap;
}
.nav-links a:hover{color:#fff;background:rgba(255,255,255,.08);}
.nav-links a.active{color:#120C24;background:var(--mint);}
.nav-links a.active:hover{color:#120C24;background:#3ef0c3;}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:12px;}
.nav-search input{
  width:176px;height:42px;
  padding:0 15px;
  border-radius:var(--r-sm);
  border:1px solid rgba(255,255,255,.16);
  background:rgba(255,255,255,.07);
  color:#fff;
  font-size:13.5px;
  transition:border-color .2s ease,box-shadow .2s ease,background-color .2s ease;
}
.nav-search input::placeholder{color:rgba(255,255,255,.42);}
.nav-search input:focus{
  outline:none;
  border-color:var(--mint);
  background:rgba(25,227,177,.10);
  box-shadow:0 0 0 3px rgba(25,227,177,.20);
}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:12px;
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.14);
  position:relative;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after{
  position:absolute;left:50%;top:50%;
  width:18px;height:2px;border-radius:2px;background:#fff;
  transform:translate(-50%,-50%);
  transition:transform .24s ease,opacity .24s ease;
  content:"";
}
.nav-toggle span::before{transform:translate(-50%,-7px);}
.nav-toggle span::after{transform:translate(-50%,5px);}
.nav-toggle[aria-expanded="true"] span{background:transparent;}
.nav-toggle[aria-expanded="true"] span::before{transform:translate(-50%,-50%) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span::after{transform:translate(-50%,-50%) rotate(-45deg);}
.nav-toggle span::before,.nav-toggle span::after{left:0;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:14px 28px;
  border-radius:999px;
  font-size:15px;
  font-weight:700;
  letter-spacing:.02em;
  border:1px solid transparent;
  transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease,color .2s ease,border-color .2s ease,filter .2s ease;
  will-change:transform;
}
.btn-primary{
  background:var(--cta-grad);
  color:#fff;
  box-shadow:var(--shadow-cta);
}
.btn-primary:hover{color:#fff;transform:translateY(-2px);filter:brightness(1.05);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{
  background:transparent;
  color:#fff;
  border-color:rgba(255,255,255,.34);
}
.btn-ghost:hover{color:#fff;background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.6);}
.btn-mint{
  background:rgba(25,227,177,.10);
  color:#0e7a5e;
  border-color:rgba(25,227,177,.55);
}
.btn-mint:hover{color:#0b5c47;background:rgba(25,227,177,.22);transform:translateY(-2px);}
.btn-sm{padding:10px 20px;font-size:13.5px;}
.btn:disabled,.btn.is-disabled{opacity:.45;pointer-events:none;}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:6px 14px;
  border-radius:999px;
  font-size:12.5px;
  font-weight:700;
  letter-spacing:.04em;
  background:rgba(25,227,177,.13);
  color:#0e7a5e;
  border:1px solid rgba(25,227,177,.35);
}
.badge-rare{background:rgba(255,209,102,.22);color:#8a5a00;border-color:rgba(255,209,102,.6);}
.badge-limit{background:rgba(255,92,122,.14);color:#b32744;border-color:rgba(255,92,122,.42);}
.badge-plain{background:var(--paper-2);color:var(--muted);border-color:var(--line);}
.badge-dark{
  background:rgba(255,255,255,.10);
  color:#fff;
  border-color:rgba(255,255,255,.22);
}
.badge-row{display:flex;flex-wrap:wrap;gap:10px;}

/* ---------- 内页 banner ---------- */
.page-banner{
  position:relative;
  background:
    linear-gradient(115deg,rgba(18,12,36,.94) 0%,rgba(27,18,51,.82) 46%,rgba(18,12,36,.62) 100%),
    url("/assets/images/backpic/back-2.png") center/cover no-repeat;
  padding:64px 0 76px;
  overflow:hidden;
}
.page-banner::after{
  content:"";
  position:absolute;inset:auto -10% -60% -10%;
  height:220px;
  background:radial-gradient(closest-side,rgba(25,227,177,.28),transparent 72%);
  pointer-events:none;
}
.page-banner .container{position:relative;z-index:2;}
.crumb{
  display:flex;align-items:center;gap:9px;
  font-size:13px;
  color:rgba(255,255,255,.6);
  margin-bottom:22px;
  flex-wrap:wrap;
}
.crumb a{color:rgba(255,255,255,.72);}
.crumb a:hover{color:var(--mint);}
.crumb span.sep{color:rgba(255,255,255,.32);}
.crumb strong{color:var(--lemon);font-weight:700;}
.banner-grid{
  display:grid;
  grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);
  gap:48px;
  align-items:center;
}
.page-banner h1{
  font-size:clamp(30px,3.6vw,48px);
  line-height:1.16;
  font-weight:900;
  color:#fff;
  margin:18px 0 18px;
  letter-spacing:-.01em;
}
.page-banner h1 em{
  font-style:normal;
  background:var(--brand-grad);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.banner-lead{
  font-size:16.5px;
  line-height:1.8;
  color:rgba(255,255,255,.78);
  max-width:640px;
}
.banner-actions{display:flex;flex-wrap:wrap;gap:14px;margin:28px 0 26px;}
.banner-stats{display:flex;flex-wrap:wrap;gap:14px;}
.stat-pill{
  min-width:132px;
  padding:13px 18px;
  border-radius:var(--r-md);
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.16);
}
.stat-pill b{display:block;font-size:24px;font-weight:900;color:var(--lemon);line-height:1.2;}
.stat-pill span{font-size:12px;color:rgba(255,255,255,.62);letter-spacing:.08em;}
.banner-visual{
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid rgba(255,255,255,.16);
  box-shadow:var(--shadow-dark);
  position:relative;
}
.banner-visual img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.banner-visual .float-tag{
  position:absolute;
  left:18px;bottom:18px;
  padding:10px 16px;
  border-radius:999px;
  background:rgba(18,12,36,.82);
  border:1px solid rgba(25,227,177,.5);
  color:#fff;
  font-size:13px;
  font-weight:700;
  backdrop-filter:blur(6px);
}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0;}
.section-alt{background:var(--paper-2);}
.section-dark{
  background:linear-gradient(150deg,#1B1233 0%,#120C24 100%);
  color:#fff;
}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:800;letter-spacing:.16em;
  color:#0e7a5e;text-transform:uppercase;
  margin-bottom:14px;
}
.section-head .eyebrow::before{content:"";width:26px;height:3px;border-radius:3px;background:var(--brand-grad);}
.section-dark .section-head .eyebrow{color:var(--mint);}
.section-head h2{
  font-size:clamp(25px,2.8vw,36px);
  line-height:1.28;
  font-weight:900;
  letter-spacing:-.01em;
}
.section-head p{margin-top:14px;color:var(--muted);font-size:16px;}
.section-dark .section-head p{color:rgba(255,255,255,.68);}

/* ---------- KPI ---------- */
.kpi-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.kpi-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:26px 24px;
  box-shadow:var(--shadow-lg);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.kpi-card:hover{transform:translateY(-4px);border-color:rgba(25,227,177,.6);box-shadow:0 22px 54px rgba(27,18,51,.14);}
.kpi-card .kpi-label{font-size:13px;color:var(--muted);letter-spacing:.06em;}
.kpi-card .kpi-value{
  font-size:38px;
  font-weight:900;
  line-height:1.15;
  margin:8px 0 4px;
  background:var(--brand-grad);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.kpi-card .kpi-note{font-size:13px;color:var(--muted);}

/* ---------- 奖励矩阵 ---------- */
.reward-grid{
  display:grid;
  grid-template-columns:repeat(6,1fr);
  gap:22px;
}
.reward-card{
  grid-column:span 2;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  overflow:hidden;
  display:flex;
  flex-direction:column;
  box-shadow:var(--shadow-lg);
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.reward-card:hover{transform:translateY(-5px);box-shadow:0 26px 60px rgba(27,18,51,.16);border-color:rgba(255,122,47,.5);}
.reward-card.is-wide{grid-column:span 3;}
.reward-thumb{position:relative;overflow:hidden;background:var(--paper-2);}
.reward-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .4s ease;}
.reward-card:hover .reward-thumb img{transform:scale(1.04);}
.reward-thumb .thumb-tag{
  position:absolute;top:14px;left:14px;
  padding:5px 13px;border-radius:999px;
  font-size:12px;font-weight:800;
  background:rgba(18,12,36,.82);
  color:#fff;
  backdrop-filter:blur(6px);
  border:1px solid rgba(255,255,255,.2);
}
.reward-body{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1;}
.reward-body h3{font-size:19px;font-weight:800;line-height:1.4;}
.reward-body p{margin-top:10px;font-size:14.5px;color:var(--muted);line-height:1.72;}
.reward-meta{
  display:flex;flex-wrap:wrap;gap:10px;
  margin:16px 0 18px;
}
.mini-stat{
  padding:8px 14px;
  border-radius:12px;
  background:var(--paper);
  border:1px solid var(--line);
  text-align:left;
}
.mini-stat b{display:block;font-size:17px;font-weight:900;color:#0e7a5e;line-height:1.2;}
.mini-stat span{font-size:11.5px;color:var(--muted);letter-spacing:.05em;}
.reward-link{
  margin-top:auto;
  font-size:14px;
  font-weight:800;
  color:var(--orange);
  display:inline-flex;align-items:center;gap:6px;
}
.reward-link::after{content:"→";transition:transform .2s ease;}
.reward-card:hover .reward-link{color:var(--coral);}
.reward-card:hover .reward-link::after{transform:translateX(4px);}

/* ---------- 兑换说明 ---------- */
.exchange-grid{
  display:grid;
  grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);
  gap:34px;
  align-items:start;
}
.panel{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:32px 30px;
  box-shadow:var(--shadow-lg);
}
.panel h3{font-size:22px;font-weight:900;margin-bottom:16px;}
.rule-list li{
  position:relative;
  padding:12px 0 12px 26px;
  font-size:15px;
  color:#3d3849;
  border-bottom:1px dashed var(--line);
}
.rule-list li:last-child{border-bottom:0;}
.rule-list li::before{
  content:"";
  position:absolute;left:0;top:20px;
  width:9px;height:9px;border-radius:50%;
  background:var(--brand-grad);
}
.tier-table{
  width:100%;
  border-collapse:separate;
  border-spacing:0 10px;
}
.tier-table th{
  text-align:left;
  font-size:12.5px;
  letter-spacing:.08em;
  color:var(--muted);
  font-weight:700;
  padding:0 14px 4px;
}
.tier-table td{
  background:var(--paper);
  padding:16px 14px;
  font-size:14.5px;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.tier-table td:first-child{border-left:1px solid var(--line);border-radius:14px 0 0 14px;font-weight:800;}
.tier-table td:last-child{border-right:1px solid var(--line);border-radius:0 14px 14px 0;}
.tier-table tr{transition:transform .2s ease;}
.tier-table tbody tr:hover td{background:#fff;border-color:rgba(25,227,177,.45);}
.tier-progress{
  height:8px;border-radius:999px;background:var(--paper-2);overflow:hidden;margin-top:8px;min-width:96px;
}
.tier-progress i{display:block;height:100%;border-radius:999px;background:var(--brand-grad);}
.tier-note{font-size:13px;color:var(--muted);margin-top:16px;}

/* ---------- 积分来源 ---------- */
.source-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.source-card{
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.14);
  border-radius:var(--r-lg);
  padding:26px 24px;
  transition:transform .22s ease,border-color .22s ease,background-color .22s ease;
}
.source-card:hover{transform:translateY(-4px);border-color:rgba(25,227,177,.6);background:rgba(25,227,177,.08);}
.source-card .src-index{
  font-size:13px;font-weight:900;letter-spacing:.14em;color:var(--mint);
}
.source-card h3{font-size:19px;font-weight:800;margin:14px 0 10px;color:#fff;}
.source-card p{font-size:14.5px;color:rgba(255,255,255,.66);line-height:1.76;}
.source-card .src-points{
  margin-top:18px;font-size:14px;font-weight:800;color:var(--lemon);
}

/* ---------- FAQ ---------- */
.faq-wrap{display:grid;grid-template-columns:repeat(2,1fr);gap:18px;}
.faq-item{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  overflow:hidden;
  transition:border-color .22s ease,box-shadow .22s ease;
}
.faq-item[open]{border-color:rgba(25,227,177,.6);box-shadow:0 14px 34px rgba(27,18,51,.08);}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  padding:20px 24px;
  font-size:16.5px;
  font-weight:800;
  display:flex;
  align-items:center;
  gap:14px;
  min-height:60px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::before{
  content:"";
  width:4px;height:20px;border-radius:4px;
  background:var(--brand-grad);
  flex:0 0 4px;
}
.faq-item summary::after{
  content:"+";
  margin-left:auto;
  font-size:20px;
  font-weight:700;
  color:var(--muted);
  transition:transform .22s ease,color .22s ease;
}
.faq-item[open] summary::after{content:"−";color:#0e7a5e;}
.faq-item .faq-answer{
  padding:0 24px 22px 42px;
  font-size:15px;
  line-height:1.8;
  color:var(--muted);
}

/* ---------- CTA ---------- */
.cta-banner{
  position:relative;
  border-radius:var(--r-lg);
  overflow:hidden;
  background:
    linear-gradient(120deg,rgba(18,12,36,.94) 0%,rgba(27,18,51,.86) 55%,rgba(18,12,36,.72) 100%),
    url("/assets/images/backpic/back-1.png") center/cover no-repeat;
  padding:52px 48px;
  display:grid;
  grid-template-columns:minmax(0,1.3fr) minmax(0,1fr);
  gap:36px;
  align-items:center;
  border:1px solid rgba(255,255,255,.12);
  box-shadow:var(--shadow-dark);
}
.cta-banner h2{font-size:clamp(24px,2.5vw,32px);font-weight:900;color:#fff;line-height:1.3;}
.cta-banner p{margin-top:14px;color:rgba(255,255,255,.72);font-size:15.5px;max-width:560px;}
.cta-side{display:flex;flex-direction:column;gap:18px;align-items:flex-start;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}
.cta-stats{display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:linear-gradient(160deg,#1B1233 0%,#120C24 100%);
  color:rgba(255,255,255,.72);
  padding:72px 0 32px;
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:38px;
  padding-bottom:40px;
  border-bottom:1px solid rgba(255,255,255,.10);
}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:18px;}
.footer-col h4{
  font-size:14px;
  font-weight:800;
  color:#fff;
  letter-spacing:.08em;
  margin-bottom:18px;
}
.footer-col p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.6);max-width:340px;}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col ul a{font-size:14px;color:rgba(255,255,255,.66);}
.footer-col ul a:hover{color:var(--mint);}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  justify-content:space-between;
  padding-top:26px;
  font-size:13px;
  color:rgba(255,255,255,.48);
}

/* ---------- 响应式 ---------- */
@media (max-width:1180px){
  .nav-search input{width:140px;}
  .nav-links a{padding:8px 10px;font-size:13.5px;}
  .reward-grid{grid-template-columns:repeat(4,1fr);}
  .reward-card{grid-column:span 2;}
  .reward-card.is-wide{grid-column:span 4;}
}
@media (max-width:1024px){
  .nav-toggle{display:block;}
  .nav-search{display:none;}
  .nav-links{
    position:fixed;
    top:68px;right:0;
    width:min(320px,86vw);
    height:calc(100vh - 68px);
    flex-direction:column;
    align-items:stretch;
    gap:6px;
    padding:22px 20px 40px;
    background:rgba(18,12,36,.99);
    border-left:1px solid rgba(255,255,255,.10);
    transform:translateX(102%);
    transition:transform .3s ease;
    overflow-y:auto;
  }
  .nav-links.is-open{transform:translateX(0);}
  .nav-links a{padding:14px 16px;font-size:15px;border-radius:12px;}
  .banner-grid{grid-template-columns:1fr;gap:34px;}
  .banner-visual img{aspect-ratio:16/9;}
  .kpi-grid{grid-template-columns:repeat(2,1fr);}
  .exchange-grid{grid-template-columns:1fr;}
  .source-grid{grid-template-columns:repeat(2,1fr);}
  .faq-wrap{grid-template-columns:1fr;}
  .cta-banner{grid-template-columns:1fr;padding:40px 30px;}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px;}
}
@media (max-width:768px){
  .container{padding:0 18px;}
  .section{padding:64px 0;}
  .page-banner{padding:42px 0 58px;}
  .reward-grid{grid-template-columns:1fr;}
  .reward-card,.reward-card.is-wide{grid-column:span 1;}
  .source-grid{grid-template-columns:1fr;}
  .kpi-grid{grid-template-columns:repeat(2,1fr);gap:14px;}
  .kpi-card{padding:20px 18px;}
  .kpi-card .kpi-value{font-size:30px;}
  .banner-actions .btn{flex:1 1 auto;}
  .tier-table th:nth-child(3),.tier-table td:nth-child(3){display:none;}
}
@media (max-width:520px){
  body{font-size:15.5px;}
  .brand-text strong{font-size:13.5px;}
  .brand-text span{font-size:10px;}
  .nav-inner{padding:10px 16px;min-height:62px;}
  .nav-links{top:62px;height:calc(100vh - 62px);}
  .kpi-grid{grid-template-columns:1fr;}
  .page-banner h1{font-size:29px;}
  .banner-stats .stat-pill{flex:1 1 100%;}
  .cta-actions{flex-direction:column;width:100%;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;}
  .tier-table th:nth-child(2),.tier-table td:nth-child(2){display:none;}
  .panel{padding:24px 20px;}
}

/* roulang page: category3 */
:root{
  --brand:#19E3B1;
  --brand-deep:#0E9C7B;
  --brand-soft:rgba(25,227,177,.12);
  --accent:#FF7A2F;
  --coral:#FF5C7A;
  --yellow:#FFD166;
  --ink:#2B2738;
  --ink-2:#6F6A7A;
  --ink-3:#9A94A6;
  --bg:#F7F5EF;
  --bg-2:#EDE9E1;
  --line:#E5DFD5;
  --card:#FFFFFF;
  --dark:#1B1233;
  --dark-2:#120C24;
  --card-dark:#241A3D;
  --grad:linear-gradient(135deg,#19E3B1 0%,#FFD166 52%,#FF7A2F 100%);
  --grad-warm:linear-gradient(120deg,#FF7A2F,#FF5C7A);
  --radius-xl:28px;
  --radius-lg:24px;
  --radius:18px;
  --radius-sm:14px;
  --shadow:0 16px 48px rgba(27,18,51,.10);
  --shadow-sm:0 8px 24px rgba(27,18,51,.07);
  --shadow-dark:0 12px 40px rgba(0,0,0,.28);
  --nav-h:72px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;line-height:1.16;font-weight:850;letter-spacing:-.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
strong{font-weight:800}
::selection{background:rgba(25,227,177,.28)}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  background:linear-gradient(180deg,rgba(18,12,36,.86),rgba(18,12,36,0));
  transition:background .3s ease,box-shadow .3s ease,backdrop-filter .3s ease;
}
.site-header.scrolled{
  background:rgba(27,18,51,.96);
  backdrop-filter:blur(14px);
  box-shadow:0 10px 32px rgba(0,0,0,.28);
}
.nav-inner{
  max-width:1240px;margin:0 auto;padding:0 24px;height:var(--nav-h);
  display:flex;align-items:center;gap:22px;
}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0}
.brand-mark{
  width:40px;height:40px;border-radius:13px;background:var(--grad);
  color:#120C24;font-weight:900;font-size:19px;display:grid;place-items:center;
  box-shadow:0 8px 22px rgba(25,227,177,.28);
}
.brand-text strong{display:block;color:#fff;font-size:15px;line-height:1.25;letter-spacing:.2px}
.brand-text span{display:block;color:rgba(255,255,255,.5);font-size:11px;letter-spacing:.16em}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:6px}
.nav-links a{
  display:block;padding:9px 15px;border-radius:999px;font-size:14.5px;
  color:rgba(255,255,255,.72);font-weight:600;white-space:nowrap;
  transition:color .2s,background .2s,transform .2s;
}
.nav-links a:hover{color:#fff;background:rgba(255,255,255,.09)}
.nav-links a.active{color:#120C24;background:var(--grad);font-weight:800;box-shadow:0 8px 20px rgba(25,227,177,.24)}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:12px}
.nav-search input{
  width:180px;height:40px;border-radius:var(--radius-sm);
  border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.08);
  color:#fff;padding:0 14px;font-size:14px;transition:border-color .2s,background .2s;
}
.nav-search input::placeholder{color:rgba(255,255,255,.45)}
.nav-search input:focus{outline:none;border-color:var(--brand);background:rgba(255,255,255,.14);box-shadow:0 0 0 3px rgba(25,227,177,.2)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:13px;position:relative;
  border:1px solid rgba(255,255,255,.2);background:rgba(255,255,255,.08);cursor:pointer;
}
.nav-toggle span{position:absolute;left:50%;top:50%;width:18px;height:2px;background:#fff;border-radius:2px;transform:translate(-50%,-50%);transition:background .2s}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:#fff;border-radius:2px}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-toggle:focus-visible{outline:2px solid var(--brand);outline-offset:2px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:800;cursor:pointer;white-space:nowrap;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease,filter .2s ease;
}
.btn-primary{background:var(--grad-warm);color:#fff;box-shadow:0 14px 30px rgba(255,92,122,.3)}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.05);box-shadow:0 18px 38px rgba(255,92,122,.36)}
.btn-ghost{background:transparent;border-color:rgba(14,156,123,.5);color:var(--brand-deep)}
.btn-ghost:hover{background:var(--brand-soft);transform:translateY(-2px)}
.btn-light{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.26);color:#fff}
.btn-light:hover{background:rgba(255,255,255,.2);transform:translateY(-2px)}
.btn-sm{padding:10px 20px;font-size:14px}
.btn:active{transform:translateY(1px)}
.btn:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.btn[disabled]{opacity:.45;pointer-events:none}

/* ---------- 通用 ---------- */
.section{padding:96px 0}
.section.tight{padding:72px 0}
.section-head{max-width:760px;margin-bottom:44px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;padding:7px 16px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand-deep);font-size:13px;font-weight:800;letter-spacing:.08em;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--grad)}
.section-head h2{font-size:clamp(26px,3.2vw,40px);margin:18px 0 14px}
.section-head p{color:var(--ink-2);font-size:16.5px;max-width:640px}
.badge{
  display:inline-flex;align-items:center;gap:7px;padding:8px 15px;border-radius:999px;
  font-size:13px;font-weight:700;background:#fff;border:1px solid var(--line);color:var(--ink-2);
}
.badge-dot{width:7px;height:7px;border-radius:50%;background:var(--brand)}
.badge-warm{background:rgba(255,122,47,.1);border-color:rgba(255,122,47,.28);color:#C4520F}
.badge-yellow{background:rgba(255,209,102,.18);border-color:rgba(255,209,102,.5);color:#8A6410}
.badge-brand{background:var(--brand-soft);border-color:rgba(25,227,177,.4);color:var(--brand-deep)}

/* ---------- 首屏 ---------- */
.page-hero{
  position:relative;padding:calc(var(--nav-h) + 72px) 0 88px;
  background:linear-gradient(140deg,#1B1233 0%,#160E2B 55%,#120C24 100%);
  overflow:hidden;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  opacity:.3;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(760px 420px at 78% 12%,rgba(25,227,177,.24),transparent 62%),
             radial-gradient(620px 380px at 12% 88%,rgba(255,122,47,.2),transparent 60%),
             linear-gradient(180deg,rgba(18,12,36,.2),rgba(18,12,36,.86));
}
.page-hero .container{position:relative;z-index:3}
.crumb{display:flex;align-items:center;gap:10px;font-size:13.5px;color:rgba(255,255,255,.55);margin-bottom:26px;flex-wrap:wrap}
.crumb a{color:rgba(255,255,255,.72);transition:color .2s}
.crumb a:hover{color:var(--brand)}
.crumb span.now{color:var(--brand)}
.hero-tag{
  display:inline-flex;align-items:center;gap:9px;padding:8px 18px;border-radius:999px;
  background:rgba(25,227,177,.14);border:1px solid rgba(25,227,177,.4);
  color:#7BF3D6;font-size:13px;font-weight:800;letter-spacing:.1em;
}
.page-hero h1{
  color:#fff;font-size:clamp(30px,4.4vw,54px);margin:22px 0 20px;max-width:880px;
  text-wrap:balance;
}
.page-hero h1 em{font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-desc{color:rgba(255,255,255,.76);font-size:17px;max-width:720px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.hero-badges{display:flex;flex-wrap:wrap;gap:12px;margin-top:40px}
.hero-badges .badge{
  background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.16);
  color:rgba(255,255,255,.82);backdrop-filter:blur(6px);
}
.hero-badges .badge strong{color:var(--yellow);font-variant-numeric:tabular-nums}

/* ---------- 阶段总览 ---------- */
.stage-panel{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-xl);
  padding:34px;box-shadow:var(--shadow);margin-top:-64px;position:relative;z-index:5;
}
.stage-panel-top{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:26px}
.stage-panel-top h2{font-size:clamp(22px,2.4vw,30px)}
.stage-panel-top p{color:var(--ink-2);font-size:14.5px;margin-top:8px}
.stage-meter{min-width:240px}
.stage-meter .meter-label{display:flex;justify-content:space-between;font-size:13px;color:var(--ink-2);margin-bottom:8px;font-weight:700}
.bar{height:9px;border-radius:999px;background:var(--bg-2);overflow:hidden}
.bar i{display:block;height:100%;border-radius:999px;background:var(--grad);transition:width .8s ease}
.stage-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.stage-card{
  position:relative;border:1px solid var(--line);border-radius:var(--radius);
  padding:22px 20px;background:linear-gradient(180deg,#FFFFFF,#FBFAF6);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.stage-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-sm);border-color:rgba(25,227,177,.5)}
.stage-card .stage-no{
  width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
  background:var(--grad);color:#120C24;font-weight:900;font-size:15px;font-variant-numeric:tabular-nums;
  margin-bottom:14px;
}
.stage-card h3{font-size:17.5px;margin-bottom:8px}
.stage-card p{font-size:14px;color:var(--ink-2);min-height:44px}
.stage-card .bar{margin:16px 0 10px}
.stage-card .stage-meta{display:flex;justify-content:space-between;align-items:center;font-size:12.5px;color:var(--ink-3);font-weight:700;font-variant-numeric:tabular-nums}
.stage-card.is-current{border-color:rgba(25,227,177,.65);box-shadow:0 14px 34px rgba(25,227,177,.16)}
.stage-card.is-current::after{
  content:"当前阶段";position:absolute;top:-11px;right:16px;padding:4px 12px;border-radius:999px;
  background:var(--grad-warm);color:#fff;font-size:11.5px;font-weight:800;letter-spacing:.06em;
}

/* ---------- 日历 ---------- */
.calendar-section{background:linear-gradient(180deg,#F7F5EF,#EDE9E1)}
.day-strip{
  display:flex;gap:18px;overflow-x:auto;padding:6px 4px 26px;
  scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;
}
.day-strip::-webkit-scrollbar{height:8px}
.day-strip::-webkit-scrollbar-thumb{background:rgba(27,18,51,.16);border-radius:999px}
.day-strip::-webkit-scrollbar-track{background:rgba(27,18,51,.05);border-radius:999px}
.day-card{
  flex:0 0 268px;scroll-snap-align:start;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-lg);padding:22px;box-shadow:var(--shadow-sm);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.day-card:hover{transform:translateY(-4px);border-color:rgba(25,227,177,.55);box-shadow:var(--shadow)}
.day-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:16px}
.day-no{font-size:19px;font-weight:900;font-variant-numeric:tabular-nums}
.day-card ul{margin:14px 0 16px;display:grid;gap:9px}
.day-card li{display:flex;align-items:flex-start;gap:9px;font-size:13.5px;color:var(--ink-2);line-height:1.6}
.day-card li::before{content:"";flex:0 0 7px;width:7px;height:7px;margin-top:8px;border-radius:50%;background:var(--brand)}
.day-card.is-done li::before{background:rgba(25,227,177,.45)}
.day-foot{display:flex;align-items:center;justify-content:space-between;font-size:12.5px;color:var(--ink-3);font-weight:700;font-variant-numeric:tabular-nums;margin-top:12px}
.day-card.is-todo{background:#FCFBF8;border-style:dashed;opacity:.92}
.day-card.is-todo .day-no{color:var(--ink-3)}
.day-card.is-doing{border-color:rgba(255,122,47,.5);box-shadow:0 14px 34px rgba(255,122,47,.14)}

/* ---------- 数据卡 ---------- */
.kpi-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-bottom:56px}
.kpi-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;
  box-shadow:var(--shadow-sm);transition:transform .25s ease,box-shadow .25s ease;
}
.kpi-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.kpi-label{font-size:13px;color:var(--ink-3);font-weight:700;letter-spacing:.04em;margin-bottom:10px}
.kpi-value{
  font-size:clamp(28px,3.4vw,38px);font-weight:900;font-variant-numeric:tabular-nums;line-height:1.1;
  background:linear-gradient(120deg,#0E9C7B,#FF7A2F);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.kpi-sub{font-size:13px;color:var(--ink-2);margin-top:8px}

/* ---------- 图文说明 ---------- */
.record-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:56px;align-items:center}
.record-media{position:relative;border-radius:var(--radius-xl);overflow:hidden;box-shadow:var(--shadow)}
.record-media img{width:100%;aspect-ratio:16/11;object-fit:cover}
.record-media .float-badge{
  position:absolute;left:20px;bottom:20px;padding:14px 20px;border-radius:var(--radius);
  background:rgba(18,12,36,.82);backdrop-filter:blur(8px);color:#fff;box-shadow:var(--shadow-dark);
}
.record-media .float-badge strong{display:block;font-size:24px;font-variant-numeric:tabular-nums;color:var(--yellow)}
.record-media .float-badge span{font-size:12.5px;color:rgba(255,255,255,.68)}
.record-copy h2{font-size:clamp(24px,3vw,36px);margin:18px 0 16px}
.record-copy p{color:var(--ink-2);margin-bottom:22px}
.check-list{display:grid;gap:14px}
.check-list li{
  display:flex;gap:14px;align-items:flex-start;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);padding:18px 20px;box-shadow:var(--shadow-sm);transition:transform .25s ease,border-color .25s ease;
}
.check-list li:hover{transform:translateY(-3px);border-color:rgba(25,227,177,.5)}
.check-list .dot{
  flex:0 0 30px;width:30px;height:30px;border-radius:10px;display:grid;place-items:center;
  background:var(--brand-soft);color:var(--brand-deep);font-weight:900;font-size:13px;
}
.check-list h4{font-size:15.5px;margin-bottom:4px}
.check-list p{font-size:13.5px;color:var(--ink-2);margin:0}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:880px;margin:0 auto}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  margin-bottom:14px;overflow:hidden;transition:border-color .25s ease,box-shadow .25s ease;
}
.faq-item.open{border-color:rgba(25,227,177,.6);box-shadow:0 14px 34px rgba(25,227,177,.12)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 24px;background:none;border:0;text-align:left;cursor:pointer;
  font-size:16.5px;font-weight:800;color:var(--ink);transition:color .2s;
}
.faq-q:hover{color:var(--brand-deep)}
.faq-q:focus-visible{outline:2px solid var(--brand);outline-offset:-4px;border-radius:var(--radius)}
.faq-q i{
  flex:0 0 26px;width:26px;height:26px;border-radius:50%;position:relative;
  background:var(--brand-soft);transition:transform .28s ease,background .28s ease;
}
.faq-q i::before,.faq-q i::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand-deep);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-q i::before{width:11px;height:2px}
.faq-q i::after{width:2px;height:11px;transition:transform .28s ease,opacity .28s ease}
.faq-item.open .faq-q i{background:var(--grad);transform:rotate(180deg)}
.faq-item.open .faq-q i::before{background:#120C24}
.faq-item.open .faq-q i::after{opacity:0}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .3s ease}
.faq-item.open .faq-a{grid-template-rows:1fr}
.faq-a > div{overflow:hidden}
.faq-a p{padding:0 24px 22px;font-size:15px;color:var(--ink-2);line-height:1.85;border-left:3px solid rgba(25,227,177,.5);margin-left:24px;padding-left:16px}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;border-radius:32px;overflow:hidden;padding:60px 56px;
  background:linear-gradient(140deg,#1B1233,#120C24);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:36px;
  box-shadow:var(--shadow-dark);
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/backpic/back-3.webp') center/cover no-repeat;opacity:.2;
}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(520px 320px at 88% 20%,rgba(25,227,177,.28),transparent 60%),
             linear-gradient(180deg,rgba(18,12,36,.2),rgba(18,12,36,.8));
}
.cta-band > *{position:relative;z-index:3}
.cta-band h2{color:#fff;font-size:clamp(24px,3vw,36px);max-width:520px}
.cta-band p{color:rgba(255,255,255,.72);margin-top:14px;max-width:520px;font-size:15.5px}
.cta-side{display:flex;flex-direction:column;gap:20px;align-items:flex-start}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}
.cta-side .badge{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.2);color:rgba(255,255,255,.85)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark-2);color:rgba(255,255,255,.7);padding:76px 0 30px;margin-top:96px}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:18px}
.footer-col > p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.55);max-width:340px}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:18px;letter-spacing:.02em}
.footer-col ul li{margin-bottom:11px}
.footer-col ul a{font-size:14px;color:rgba(255,255,255,.6);transition:color .2s,transform .2s;display:inline-block}
.footer-col ul a:hover{color:var(--brand);transform:translateX(3px)}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:14px;
  border-top:1px solid rgba(255,255,255,.1);margin-top:48px;padding-top:24px;
  font-size:13px;color:rgba(255,255,255,.45);
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .nav-links a{padding:9px 12px;font-size:14px}
  .nav-search input{width:150px}
}
@media (max-width:1023px){
  .nav-links{
    position:fixed;top:var(--nav-h);right:0;bottom:0;width:min(340px,86vw);
    flex-direction:column;align-items:stretch;gap:8px;margin:0;padding:24px 22px 40px;
    background:#180F2E;box-shadow:-20px 0 50px rgba(0,0,0,.4);
    transform:translateX(105%);transition:transform .32s ease;overflow-y:auto;
  }
  .nav-links.open{transform:translateX(0)}
  .nav-links a{font-size:16px;padding:14px 16px;border-radius:var(--radius-sm);border:1px solid rgba(255,255,255,.08)}
  .nav-search{display:none}
  .nav-toggle{display:block}
  .nav-right .btn-sm{display:none}
  .stage-grid{grid-template-columns:repeat(2,1fr)}
  .kpi-grid{grid-template-columns:repeat(2,1fr)}
  .record-grid{grid-template-columns:1fr;gap:36px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .nav-inner{padding:0 18px;gap:12px}
  .brand-text strong{font-size:13.5px}
  .brand-text span{font-size:10px}
  .section{padding:62px 0}
  .section.tight{padding:52px 0}
  .page-hero{padding:calc(var(--nav-h) + 48px) 0 64px}
  .page-hero h1{font-size:31px}
  .hero-desc{font-size:15.5px}
  .hero-actions .btn{flex:1 1 100%}
  .stage-panel{padding:24px 20px;margin-top:-44px;border-radius:var(--radius-lg)}
  .stage-grid{grid-template-columns:1fr}
  .kpi-grid{grid-template-columns:1fr;gap:14px}
  .day-card{flex:0 0 232px}
  .cta-band{padding:40px 26px;border-radius:var(--radius-lg)}
  .cta-side{width:100%}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 100%}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-bottom{flex-direction:column}
  .faq-q{font-size:15.5px;padding:17px 18px}
  .faq-a p{margin-left:18px;padding:0 18px 20px 14px}
}
@media (max-width:479px){
  .page-hero h1{font-size:28px}
  .hero-badges .badge{font-size:12px;padding:7px 12px}
  .brand-text span{display:none}
}

/* roulang page: category4 */
:root{
  --brand-cyan:#19E3B1;
  --brand-orange:#FF7A2F;
  --brand-coral:#FF5C7A;
  --brand-yellow:#FFD166;
  --ink-900:#1B1233;
  --ink-950:#120C24;
  --ink-800:#241A3D;
  --bg-warm:#F7F5EF;
  --bg-gray:#EDE9E1;
  --text:#2B2738;
  --muted:#6F6A7A;
  --line:#E5DFD5;
  --grad:linear-gradient(135deg,#19E3B1 0%,#FFD166 52%,#FF7A2F 100%);
  --grad-btn:linear-gradient(135deg,#FF7A2F 0%,#FF5C7A 100%);
  --radius-xl:30px;
  --radius-lg:24px;
  --radius-md:18px;
  --radius-sm:14px;
  --shadow-lg:0 16px 48px rgba(27,18,51,.10);
  --shadow-dark:0 12px 40px rgba(0,0,0,.28);
  --container:1240px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","HarmonyOS Sans",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg-warm);
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;line-height:1.2;font-weight:800;letter-spacing:-.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand-cyan);outline-offset:2px;border-radius:8px}
.num{font-variant-numeric:tabular-nums}
.container{width:min(100% - 40px,var(--container));margin-inline:auto}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:999px;border:1px solid transparent;cursor:pointer;
  padding:13px 26px;font-size:15px;font-weight:700;white-space:nowrap;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn-sm{padding:10px 18px;font-size:14px}
.btn-primary{background:var(--grad-btn);color:#fff;box-shadow:0 10px 26px rgba(255,92,122,.30)}
.btn-primary:hover{transform:translateY(-2px);filter:brightness(1.05);box-shadow:0 14px 32px rgba(255,92,122,.38)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;border-color:rgba(25,227,177,.55);color:#0d6b57}
.btn-ghost:hover{background:rgba(25,227,177,.12);transform:translateY(-2px)}
.btn-ghost-light{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.26);color:#fff}
.btn-ghost-light:hover{background:rgba(255,255,255,.22);transform:translateY(-2px)}
.btn:disabled{opacity:.45;cursor:not-allowed;transform:none}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(27,18,51,.62);
  backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(255,255,255,.08);
  transition:background .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{background:rgba(27,18,51,.96);box-shadow:0 10px 30px rgba(0,0,0,.28)}
.nav-inner{
  width:min(100% - 40px,var(--container));margin-inline:auto;
  display:flex;align-items:center;gap:22px;height:68px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:38px;height:38px;border-radius:12px;background:var(--grad);
  display:grid;place-items:center;color:#0f3a2f;font-weight:900;font-size:17px;
  box-shadow:0 6px 18px rgba(25,227,177,.35);
}
.brand-text strong{display:block;color:#fff;font-size:15px;font-weight:800;letter-spacing:.005em;line-height:1.25}
.brand-text span{display:block;font-size:11px;color:rgba(255,255,255,.5);letter-spacing:.16em;line-height:1.4}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:8px}
.nav-links a{
  color:rgba(255,255,255,.74);font-size:14.5px;padding:8px 13px;border-radius:999px;
  transition:color .2s ease,background .2s ease;
}
.nav-links a:hover{color:#fff;background:rgba(255,255,255,.09)}
.nav-links a.active{
  color:#0d3a2f;font-weight:800;
  background:linear-gradient(135deg,#19E3B1,#FFD166);
}
.nav-right{display:flex;align-items:center;gap:10px;margin-left:auto}
.nav-search input{
  width:184px;height:40px;border-radius:12px;padding:0 14px;font-size:14px;
  border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.08);color:#fff;
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.nav-search input::placeholder{color:rgba(255,255,255,.45)}
.nav-search input:focus{border-color:var(--brand-cyan);background:rgba(255,255,255,.14);box-shadow:0 0 0 3px rgba(25,227,177,.22);outline:none}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;position:relative;
  border:1px solid rgba(255,255,255,.2);background:rgba(255,255,255,.07);cursor:pointer;
}
.nav-toggle span{position:absolute;left:50%;top:50%;width:18px;height:2px;margin:-1px 0 0 -9px;background:#fff;border-radius:2px}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:#fff;border-radius:2px}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* ============ 首屏 Banner ============ */
.page-banner{
  position:relative;color:#fff;padding:64px 0 72px;overflow:hidden;
  background-color:var(--ink-950);
  background-image:linear-gradient(118deg,rgba(18,12,36,.95) 0%,rgba(27,18,51,.86) 46%,rgba(27,18,51,.52) 100%),url("/assets/images/backpic/back-1.png");
  background-size:cover,cover;background-position:center,center;
}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:rgba(255,255,255,.6);margin-bottom:20px}
.crumb a{transition:color .2s ease}
.crumb a:hover{color:var(--brand-cyan)}
.crumb i{font-style:normal;color:rgba(255,255,255,.35)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 16px;border-radius:999px;font-size:13px;font-weight:700;
  color:#0f3a2f;background:linear-gradient(135deg,rgba(25,227,177,.95),rgba(255,209,102,.95));
  margin-bottom:20px;
}
.banner-grid{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:44px;align-items:center}
.page-banner h1{
  font-size:clamp(30px,4.1vw,50px);line-height:1.14;font-weight:900;letter-spacing:-.02em;
  max-width:16em;
}
.page-banner h1 em{font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.banner-lead{margin-top:18px;font-size:17px;line-height:1.85;color:rgba(255,255,255,.78);max-width:44em}
.banner-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.banner-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-top:34px}
.stat{
  border-radius:var(--radius-md);padding:16px 18px;
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);
}
.stat b{display:block;font-size:26px;font-weight:900;line-height:1.2;color:#fff;font-variant-numeric:tabular-nums}
.stat span{display:block;font-size:12.5px;color:rgba(255,255,255,.6);margin-top:4px}
.banner-visual{
  border-radius:var(--radius-xl);overflow:hidden;position:relative;
  box-shadow:var(--shadow-dark);border:1px solid rgba(255,255,255,.14);
}
.banner-visual img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/11}
.banner-visual::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(160deg,rgba(25,227,177,.22),rgba(255,122,47,.20) 70%,rgba(18,12,36,.5));
}
.visual-tag{
  position:absolute;left:16px;bottom:16px;z-index:2;
  padding:10px 16px;border-radius:999px;font-size:13px;font-weight:700;
  background:rgba(18,12,36,.78);color:#fff;border:1px solid rgba(25,227,177,.5);
  backdrop-filter:blur(6px);
}

/* ============ 通用板块 ============ */
.section{padding:96px 0}
.section-alt{background:var(--bg-gray)}
.section-dark{background:linear-gradient(160deg,#1B1233,#120C24);color:#fff}
.section-head{max-width:780px;margin-bottom:44px}
.section-head .kicker{
  display:inline-block;font-size:13px;font-weight:800;letter-spacing:.14em;
  color:#0d6b57;text-transform:uppercase;margin-bottom:12px;
}
.section-dark .section-head .kicker{color:var(--brand-cyan)}
.section-head h2{font-size:clamp(26px,3.1vw,40px);line-height:1.2}
.section-head p{margin-top:14px;color:var(--muted);font-size:16.5px}
.section-dark .section-head p{color:rgba(255,255,255,.72)}

/* ============ 快速入口卡 ============ */
.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.qcard{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:26px 24px;box-shadow:var(--shadow-lg);
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
  display:flex;flex-direction:column;gap:12px;
}
.qcard:hover{transform:translateY(-4px);border-color:rgba(25,227,177,.75);box-shadow:0 20px 52px rgba(25,227,177,.16)}
.qcard .qnum{
  width:44px;height:44px;border-radius:14px;display:grid;place-items:center;
  font-weight:900;font-size:17px;color:#0f3a2f;background:linear-gradient(135deg,#19E3B1,#FFD166);
  font-variant-numeric:tabular-nums;
}
.qcard h3{font-size:19px}
.qcard p{font-size:14.5px;color:var(--muted);line-height:1.75}
.qcard a{margin-top:auto;font-size:14px;font-weight:700;color:#0d6b57;display:inline-flex;align-items:center;gap:6px;transition:gap .2s ease,color .2s ease}
.qcard a:hover{gap:10px;color:var(--brand-orange)}

/* ============ 排查步骤 ============ */
.step-row{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.step{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:26px 22px 24px;box-shadow:var(--shadow-lg);
}
.step::after{
  content:"";position:absolute;right:-11px;top:50px;width:22px;height:2px;
  background:linear-gradient(90deg,var(--brand-cyan),rgba(255,209,102,.2));
}
.step:last-child::after{display:none}
.step-num{
  width:46px;height:46px;border-radius:14px;display:grid;place-items:center;
  font-weight:900;font-size:17px;color:#fff;background:var(--grad);margin-bottom:16px;
  font-variant-numeric:tabular-nums;
}
.step h3{font-size:17.5px;margin-bottom:8px}
.step p{font-size:14.5px;color:var(--muted);line-height:1.75}
.step .tag{
  display:inline-block;margin-top:14px;font-size:12.5px;font-weight:700;
  padding:5px 12px;border-radius:999px;background:rgba(25,227,177,.14);color:#0d6b57;
}

/* ============ FAQ ============ */
.faq-tools{display:flex;flex-wrap:wrap;gap:14px;align-items:center;margin-bottom:28px}
.faq-search{
  flex:1 1 320px;height:50px;border-radius:var(--radius-sm);padding:0 18px;
  border:1px solid var(--line);background:#fff;font-size:15px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-search:focus{outline:none;border-color:var(--brand-cyan);box-shadow:0 0 0 3px rgba(25,227,177,.2)}
.faq-hint{font-size:13.5px;color:var(--muted)}
.faq-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;align-items:start}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);
  overflow:hidden;transition:border-color .25s ease,box-shadow .25s ease,background .25s ease;
}
.faq-item[open]{border-color:rgba(25,227,177,.85);box-shadow:0 14px 34px rgba(25,227,177,.15);background:#fff}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:19px 22px;min-height:60px;cursor:pointer;list-style:none;
  font-size:16.5px;font-weight:700;line-height:1.5;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";flex:0 0 auto;font-size:22px;font-weight:700;line-height:1;
  color:var(--brand-cyan);transition:transform .25s ease,color .25s ease;
}
.faq-item[open] summary::after{content:"–";color:var(--brand-orange)}
.faq-item summary:hover{color:#0d6b57}
.faq-item[open] summary{border-left:3px solid var(--brand-cyan);padding-left:19px}
.faq-answer{
  padding:0 22px 20px;font-size:15.5px;line-height:1.85;color:var(--muted);
  border-left:3px solid transparent;
}
.faq-item[open] .faq-answer{border-left-color:rgba(25,227,177,.35);background:rgba(25,227,177,.05);padding-top:4px}
.faq-empty{
  margin-top:18px;padding:22px;border-radius:var(--radius-md);
  border:1px dashed var(--line);background:#fff;color:var(--muted);font-size:15px;text-align:center;
}

/* ============ 安全提示深色块 ============ */
.safety{
  background:linear-gradient(155deg,#241A3D 0%,#120C24 100%);
  border-radius:var(--radius-xl);padding:46px;display:grid;
  grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:40px;align-items:center;
  color:#fff;box-shadow:var(--shadow-dark);
}
.safety h2{font-size:clamp(24px,2.7vw,34px);line-height:1.25}
.safety p.safety-lead{margin-top:14px;color:rgba(255,255,255,.72);font-size:16px}
.safety-list{display:grid;gap:14px;margin-top:26px}
.safety-list li{
  display:flex;gap:12px;align-items:flex-start;font-size:15px;color:rgba(255,255,255,.82);
  padding:14px 18px;border-radius:var(--radius-md);
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);
}
.safety-list li b{
  flex:0 0 auto;width:24px;height:24px;border-radius:8px;display:grid;place-items:center;
  font-size:13px;color:#0f3a2f;background:linear-gradient(135deg,#19E3B1,#FFD166);
}
.safety-visual{border-radius:var(--radius-lg);overflow:hidden;border:1px solid rgba(255,255,255,.16);box-shadow:var(--shadow-dark)}
.safety-visual img{width:100%;aspect-ratio:4/3;object-fit:cover}

/* ============ 支持表单 ============ */
.support-grid{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(0,.95fr);gap:28px;align-items:start}
.form-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:32px;box-shadow:var(--shadow-lg);
}
.form-card h2{font-size:24px}
.form-card .form-note{margin-top:10px;color:var(--muted);font-size:14.5px}
.form-row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.field{display:grid;gap:8px;margin-top:18px}
.field label{font-size:14px;font-weight:700}
.field input,.field select,.field textarea{
  width:100%;border-radius:var(--radius-sm);border:1px solid var(--line);
  background:#FDFCF9;padding:0 16px;height:50px;font-size:15px;
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.field textarea{height:auto;min-height:132px;padding:14px 16px;line-height:1.7;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand-cyan);background:#fff;box-shadow:0 0 0 3px rgba(25,227,177,.2);
}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:var(--brand-coral);box-shadow:0 0 0 3px rgba(255,92,122,.16)}
.field .err{font-size:13px;color:#c93a58;display:none}
.field.has-error .err{display:block}
.form-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center;margin-top:24px}
.form-actions small{color:var(--muted);font-size:13px}
.form-success{
  margin-top:18px;padding:14px 18px;border-radius:var(--radius-sm);
  background:rgba(25,227,177,.12);border:1px solid rgba(25,227,177,.5);
  color:#0d6b57;font-size:14.5px;display:none;
}
.form-success.show{display:block}

.side-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:26px;box-shadow:var(--shadow-lg);
}
.side-card + .side-card{margin-top:20px}
.side-card h3{font-size:18px;margin-bottom:14px}
.side-links{display:grid;gap:10px}
.side-links a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:12px 16px;border-radius:var(--radius-sm);border:1px solid var(--line);
  font-size:14.5px;font-weight:600;transition:border-color .2s ease,background .2s ease,transform .2s ease;
}
.side-links a:hover{border-color:rgba(25,227,177,.75);background:rgba(25,227,177,.08);transform:translateX(3px)}
.side-links a span{color:var(--brand-orange)}
.side-meta{display:grid;gap:12px;margin-top:6px}
.side-meta div{display:flex;justify-content:space-between;gap:12px;font-size:14px;color:var(--muted);padding-bottom:10px;border-bottom:1px dashed var(--line)}
.side-meta div:last-child{border-bottom:none;padding-bottom:0}
.side-meta b{color:var(--text);font-variant-numeric:tabular-nums}

/* ============ CTA ============ */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--radius-xl);padding:48px;
  background:linear-gradient(135deg,#1B1233 0%,#120C24 100%);color:#fff;
  display:flex;flex-wrap:wrap;gap:32px;align-items:center;justify-content:space-between;
  box-shadow:var(--shadow-dark);
}
.cta-band::before{
  content:"";position:absolute;inset:0;opacity:.24;
  background:url("/assets/images/backpic/back-2.png") center/cover no-repeat;
}
.cta-copy,.cta-actions{position:relative;z-index:2}
.cta-copy h2{font-size:clamp(24px,2.8vw,34px);line-height:1.25}
.cta-copy p{margin-top:12px;color:rgba(255,255,255,.74);font-size:16px;max-width:44em}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;align-items:center}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-950);color:rgba(255,255,255,.72);padding:64px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:34px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-col p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.6);max-width:34em}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:800}
.footer-col ul{display:grid;gap:11px}
.footer-col ul a{font-size:14px;color:rgba(255,255,255,.68);transition:color .2s ease}
.footer-col ul a:hover{color:var(--brand-cyan)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;
  border-top:1px solid rgba(255,255,255,.1);margin-top:44px;padding-top:22px;
  font-size:13px;color:rgba(255,255,255,.45);
}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .banner-grid{grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:34px}
  .grid-4{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media (max-width:1180px){
  .nav-search{display:none}
  .nav-links a{font-size:14px;padding:8px 11px}
}
@media (max-width:1024px){
  .nav-inner{height:64px;gap:14px}
  .nav-toggle{display:block}
  .nav-links{
    position:fixed;top:0;right:0;bottom:0;width:min(84vw,340px);
    background:#1B1233;flex-direction:column;align-items:stretch;gap:6px;
    padding:88px 22px 28px;transform:translateX(102%);
    transition:transform .3s ease;z-index:90;overflow-y:auto;
    box-shadow:-18px 0 48px rgba(0,0,0,.4);border-left:1px solid rgba(255,255,255,.1);
  }
  body.nav-open .nav-links{transform:translateX(0)}
  body.nav-open{overflow:hidden}
  .nav-links a{padding:14px 16px;font-size:15.5px;border-radius:14px}
  .nav-links a.active{background:linear-gradient(135deg,rgba(25,227,177,.22),rgba(255,209,102,.18));color:#fff;border:1px solid rgba(25,227,177,.5)}
  .banner-grid{grid-template-columns:1fr;gap:30px}
  .banner-visual img{aspect-ratio:16/9}
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .step-row{grid-template-columns:repeat(2,minmax(0,1fr))}
  .step::after{display:none}
  .safety{grid-template-columns:1fr;padding:36px}
  .support-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .section{padding:76px 0}
}
@media (max-width:768px){
  .faq-grid{grid-template-columns:1fr}
  .form-row{grid-template-columns:1fr}
  .banner-stats{grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}
  .stat b{font-size:22px}
  .cta-band{padding:34px}
  .page-banner{padding:48px 0 56px}
  .section{padding:64px 0}
}
@media (max-width:560px){
  .container{width:min(100% - 32px,var(--container))}
  .nav-inner{width:min(100% - 32px,var(--container))}
  .brand-text strong{font-size:13.5px}
  .brand-text span{display:none}
  .page-banner h1{font-size:30px}
  .banner-actions .btn,.cta-actions .btn,.form-actions .btn{width:100%}
  .grid-4{grid-template-columns:1fr}
  .step-row{grid-template-columns:1fr}
  .banner-stats{grid-template-columns:1fr}
  .form-card{padding:22px}
  .safety{padding:26px}
  .faq-item summary{font-size:15.5px;padding:16px 18px}
  .faq-answer{padding:0 18px 18px}
}