/* roulang page: index */
/* ========== 设计变量 ========== */
:root{
  --bg:#070D18;
  --bg-2:#0B1524;
  --panel:rgba(255,255,255,0.045);
  --line:rgba(255,255,255,0.10);
  --primary:#12E0C0;
  --primary-soft:#7CF0D8;
  --accent:#D8FF4F;
  --warn:#FF5A36;
  --text:#EAF1F8;
  --text-2:#9FB0C4;
  --text-3:#6C7C8F;
  --r-lg:16px;
  --r-sm:10px;
  --sh-1:0 12px 32px -18px rgba(0,0,0,.7);
  --sh-2:0 20px 48px -20px rgba(0,0,0,.85);
  --glow:0 10px 30px -8px rgba(18,224,192,.55);
  --t:240ms cubic-bezier(.2,.7,.3,1);
  --sec:88px;
  --container:1200px;
}
/* ========== 基础 reset ========== */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:-apple-system,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;line-height:1.85;font-weight:400;overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body.is-locked{overflow:hidden}
img{max-width:100%;display:block;border:0}
a{color:var(--primary-soft);text-decoration:none;transition:color var(--t),background var(--t),border-color var(--t),transform var(--t),box-shadow var(--t)}
a:hover{color:var(--primary)}
h1,h2,h3,h4{margin:0;color:var(--text);font-weight:700;line-height:1.3}
h1{font-size:clamp(30px,4.6vw,54px);line-height:1.2}
h2{font-size:clamp(24px,3vw,36px);line-height:1.3}
h3{font-size:21px;line-height:1.4;font-weight:600}
p{margin:0 0 18px;color:var(--text-2)}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:6px}
.num{font-variant-numeric:tabular-nums;font-weight:700;letter-spacing:.02em}
/* ========== 容器与栅格 ========== */
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.container .grid-x.grid-padding-x{margin-left:-12px;margin-right:-12px}
.container .grid-x.grid-padding-x > .cell{padding-left:12px;padding-right:12px}
.section{padding:var(--sec) 0}
.section-alt{background:var(--bg-2)}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:40px}
.section-head h2{margin-bottom:10px}
.section-head .section-desc{color:var(--text-2);font-size:15px;max-width:640px;margin:0}
.section-kicker{display:block;font-size:12px;letter-spacing:.06em;color:var(--accent);font-weight:600;margin-bottom:10px}
.text-link{position:relative;font-size:14px;font-weight:600;color:var(--primary-soft);white-space:nowrap}
.text-link::after{content:"";position:absolute;left:0;right:0;bottom:-4px;height:1px;background:var(--primary);transform:scaleX(0);transform-origin:left;transition:transform var(--t)}
.text-link:hover::after{transform:scaleX(1)}
/* ========== 顶部导航 ========== */
.site-header{position:fixed;top:0;left:0;right:0;z-index:60;background:transparent;border-bottom:1px solid transparent;transition:background var(--t),border-color var(--t),backdrop-filter var(--t)}
.site-header.is-scrolled{background:var(--panel);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.topbar-inner{display:flex;align-items:center;gap:20px;height:76px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{width:38px;height:38px;border-radius:12px;display:grid;place-items:center;background:linear-gradient(135deg,#12E0C0,#7CF0D8);color:#04231F;flex:0 0 auto}
.brand-mark svg{width:22px;height:22px;display:block}
.brand-text{font-size:18px;font-weight:700;color:var(--text);letter-spacing:.02em}
.brand:hover .brand-text{color:var(--primary)}
.chip-nav{display:flex;align-items:center;gap:8px;overflow-x:auto;flex:1 1 auto;scrollbar-width:none;-ms-overflow-style:none}
.chip-nav::-webkit-scrollbar{display:none}
.chip{
  flex:0 0 auto;display:inline-flex;align-items:center;height:38px;padding:0 16px;border-radius:999px;
  border:1px solid var(--line);color:var(--text-2);font-size:14px;font-weight:500;background:transparent;
  transition:color var(--t),background var(--t),border-color var(--t);
}
.chip:hover{color:var(--text);border-color:rgba(18,224,192,.45);background:rgba(18,224,192,.08)}
.chip.is-active{background:var(--primary);border-color:var(--primary);color:#04231F;font-weight:600}
.header-cta{flex:0 0 auto}
.nav-toggle{display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:var(--panel);align-items:center;justify-content:center;gap:5px;flex-direction:column;cursor:pointer}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px}
/* ========== 按钮 ========== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:999px;font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;transition:all var(--t);text-align:center;line-height:1;
}
.btn-primary{background:linear-gradient(135deg,#12E0C0,#7CF0D8);color:#04231F;box-shadow:var(--glow)}
.btn-primary:hover{color:#04231F;filter:brightness(1.08);transform:translateY(-2px)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;border-color:var(--primary);color:var(--primary-soft)}
.btn-ghost:hover{background:rgba(18,224,192,.08);color:var(--primary);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{height:40px;padding:0 20px;font-size:14px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}
/* ========== Hero ========== */
.hero{position:relative;padding:168px 0 96px;overflow:hidden}
.hero-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.png');background-size:cover;background-position:center;z-index:0}
.hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,13,24,.72) 0%,rgba(7,13,24,.80) 42%,rgba(7,13,24,.97) 100%)}
.hero-inner{position:relative;z-index:1}
.eyebrow{display:inline-block;font-size:12px;letter-spacing:.06em;color:var(--accent);font-weight:600;border:1px solid rgba(216,255,79,.35);border-radius:999px;padding:6px 14px;margin-bottom:20px}
.hero h1{margin-bottom:18px;max-width:15em}
.hero-sub{font-size:17px;color:var(--text-2);max-width:34em;margin-bottom:26px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:34px}
.hero-stats{display:flex;flex-wrap:wrap;gap:14px}
.stat{background:var(--panel);border:1px solid var(--line);border-radius:var(--r-sm);padding:12px 18px;min-width:132px}
.stat-num{display:block;font-size:22px;color:var(--accent);font-variant-numeric:tabular-nums;font-weight:700;letter-spacing:.02em;line-height:1.3}
.stat-label{display:block;font-size:13px;color:var(--text-3);line-height:1.6}
.glass-card{background:var(--panel);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-1)}
.hero-card{padding:24px}
.hero-card-head{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--text-2);margin-bottom:18px}
.dot{width:8px;height:8px;border-radius:50%;background:var(--primary);box-shadow:0 0 0 4px rgba(18,224,192,.16);display:block;flex:0 0 auto}
.badge{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;font-size:12px;letter-spacing:.06em;font-weight:600;background:rgba(18,224,192,.12);color:var(--primary-soft);line-height:1}
.badge-accent{background:rgba(216,255,79,.14);color:var(--accent)}
.badge-warn{background:rgba(255,90,54,.14);color:var(--warn)}
.hero-card-head .badge{margin-left:auto}
.entry-list{margin:0 0 20px}
.entry-list li{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 0;border-bottom:1px dashed rgba(255,255,255,.10);font-size:15px;color:var(--text)}
.entry-list li:last-child{border-bottom:0}
.entry-list em{font-style:normal;font-size:13px;color:var(--text-3)}
.hero-card-note{font-size:13px;color:var(--text-3);margin:14px 0 0}
/* ========== 图文叙事 ========== */
.story{padding:var(--sec) 0}
.story-copy h2{margin-bottom:18px}
.story-copy p{font-size:16px;max-width:34em}
.story-metrics{display:flex;flex-wrap:wrap;gap:24px;margin:26px 0 24px}
.story-metrics div{min-width:110px}
.story-metrics strong{display:block;font-size:24px;color:var(--accent);font-variant-numeric:tabular-nums;letter-spacing:.02em;line-height:1.35}
.story-metrics span{font-size:13px;color:var(--text-3)}
.story-stack{position:relative;padding-bottom:34px}
.story-tile{border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh-1);transform:skewY(-1.2deg)}
.story-tile img{width:100%;height:260px;object-fit:cover}
.story-tile.tile-2{width:82%;margin-left:auto;margin-top:-46px;transform:skewY(1.2deg)}
.story-tile.tile-2 img{height:220px}
/* ========== 卡片通用 ========== */
.card{background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-1);transition:transform var(--t),box-shadow var(--t),border-color var(--t);display:block;overflow:hidden}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(18,224,192,.45)}
.card-pad{padding:24px}
.card-title{font-size:19px;margin-bottom:10px;color:var(--text)}
.card:hover .card-title{color:var(--primary-soft)}
.card-text{font-size:14px;color:var(--text-2);margin-bottom:16px}
.card-meta{display:flex;align-items:center;gap:12px;font-size:13px;color:var(--text-3);flex-wrap:wrap}
.card-arrow{color:var(--primary);font-weight:700}
/* 特色大卡 */
.feature-card{display:flex;flex-direction:column;height:100%}
.feature-media{position:relative;height:240px;overflow:hidden}
.feature-media img{width:100%;height:100%;object-fit:cover;transition:transform 500ms cubic-bezier(.2,.7,.3,1)}
.feature-card:hover .feature-media img{transform:scale(1.04)}
.feature-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(11,21,36,0) 40%,rgba(11,21,36,.92) 100%)}
.feature-media .badge{position:absolute;left:18px;top:18px;z-index:2}
.feature-body{padding:24px;flex:1 1 auto;display:flex;flex-direction:column}
.feature-body .card-text{flex:1 1 auto}
/* 小卡纵排 */
.mini-stack{display:flex;flex-direction:column;gap:24px;height:100%}
.mini-card{display:flex;gap:16px;align-items:flex-start;padding:20px}
.mini-card .mini-icon{width:44px;height:44px;border-radius:12px;background:rgba(18,224,192,.12);display:grid;place-items:center;flex:0 0 auto;color:var(--primary);font-weight:700;font-size:15px;font-variant-numeric:tabular-nums}
.mini-card h3{font-size:17px;margin-bottom:6px}
.mini-card p{font-size:14px;margin:0;color:var(--text-2)}
/* ========== 最新信息列表 ========== */
.news-list{display:flex;flex-direction:column;gap:16px}
.news-row{display:flex;gap:20px;align-items:center;background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-lg);padding:18px;transition:transform var(--t),box-shadow var(--t),border-color var(--t)}
.news-row:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(18,224,192,.45)}
.news-thumb{flex:0 0 auto;width:168px;height:112px;border-radius:var(--r-sm);overflow:hidden;position:relative;background:linear-gradient(135deg,rgba(18,224,192,.35),var(--bg-2))}
.news-thumb img{width:100%;height:100%;object-fit:cover}
.news-body{flex:1 1 auto;min-width:0}
.news-body h3{font-size:17px;margin:8px 0 6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-body h3 a{color:var(--text)}
.news-body h3 a:hover{color:var(--primary-soft)}
.news-body p{font-size:14px;margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;color:var(--text-2)}
.news-meta{flex:0 0 auto;text-align:right;font-size:13px;color:var(--text-3);display:flex;flex-direction:column;align-items:flex-end;gap:8px;min-width:96px}
.news-meta .card-arrow{font-size:16px}
.empty-state{background:var(--bg-2);border:1px dashed var(--line);border-radius:var(--r-lg);padding:44px 24px;text-align:center}
.empty-visual{width:84px;height:84px;margin:0 auto 18px;border-radius:20px;background:linear-gradient(135deg,rgba(18,224,192,.35),rgba(11,21,36,.9));display:grid;place-items:center;color:#04231F;font-size:26px;font-weight:700}
.empty-state p{color:var(--text-2);margin-bottom:18px}
/* ========== 流程图 ========== */
.flow{display:flex;gap:20px}
.flow-step{flex:1 1 0;background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-lg);padding:24px;position:relative;transition:border-color var(--t),transform var(--t)}
.flow-step:hover{border-color:rgba(18,224,192,.45);transform:translateY(-4px)}
.flow-step .step-no{font-size:13px;font-weight:700;color:var(--accent);letter-spacing:.06em;display:block;margin-bottom:12px}
.flow-step h3{font-size:17px;margin-bottom:8px}
.flow-step p{font-size:14px;margin:0;color:var(--text-2)}
/* ========== 信任条带 ========== */
.trust-scroll{display:flex;gap:16px;overflow-x:auto;padding:4px 4px 18px;scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;scrollbar-width:thin}
.trust-scroll::-webkit-scrollbar{height:6px}
.trust-scroll::-webkit-scrollbar-thumb{background:rgba(18,224,192,.35);border-radius:999px}
.trust-card{flex:0 0 auto;width:264px;background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r-lg);padding:22px;scroll-snap-align:start}
.trust-card strong{display:block;font-size:24px;color:var(--primary);font-variant-numeric:tabular-nums;letter-spacing:.02em;line-height:1.3}
.trust-card span{display:block;font-size:14px;color:var(--text);margin:6px 0 8px;font-weight:600}
.trust-card p{font-size:13px;color:var(--text-3);margin:0}
/* ========== FAQ ========== */
.faq-acc{background:transparent;border:0;margin:0}
.faq-acc .accordion-item{border:1px solid var(--line);border-radius:14px;margin-bottom:12px;background:var(--bg-2);overflow:hidden;transition:border-color var(--t)}
.faq-acc .accordion-item.is-active{border-color:rgba(18,224,192,.45)}
.faq-acc .accordion-title{border:0;background:transparent;color:var(--text);font-weight:600;font-size:16px;line-height:56px;padding:0 22px;height:56px}
.faq-acc .accordion-title:hover{background:rgba(18,224,192,.05);color:var(--primary-soft)}
.faq-acc .accordion-title::before{color:var(--primary);font-size:20px;line-height:56px;margin-right:12px}
.faq-acc .accordion-content{border:0;background:transparent;padding:0 22px 22px 54px;color:var(--text-2);box-shadow:inset 2px 0 0 var(--primary);margin-left:22px}
.faq-acc .accordion-content p{font-size:14.5px;margin:0}
/* ========== 订阅 CTA ========== */
.cta-panel{background:var(--panel);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-1);padding:40px;display:flex;flex-wrap:wrap;gap:32px;align-items:center}
.cta-copy{flex:1 1 320px}
.cta-copy h2{margin-bottom:12px}
.cta-copy p{font-size:15px;margin:0;color:var(--text-2)}
.cta-form{flex:1 1 380px}
.field-row{display:flex;gap:12px}
.field{flex:1 1 auto}
.field input{width:100%;height:50px;border-radius:12px;border:1px solid var(--line);background:var(--panel);color:var(--text);padding:0 16px;font-size:15px;transition:border-color var(--t),box-shadow var(--t)}
.field input::placeholder{color:var(--text-3)}
.field input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(18,224,192,.15)}
.form-hint{font-size:13px;color:var(--text-3);margin:12px 0 0}
.form-hint.is-error{color:var(--warn)}
/* ========== 页脚 ========== */
.site-footer{background:var(--bg-2);border-top:1px solid var(--line);padding:64px 0 0;margin-top:0}
.footer-grid{gap:0 0}
.footer-col{padding-right:24px}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--text)}
.footer-col p{font-size:14px;color:var(--text-3);margin:14px 0 0;max-width:26em}
.footer-col ul li{margin-bottom:10px}
.footer-col ul a{font-size:14px;color:var(--text-2)}
.footer-col ul a:hover{color:var(--primary)}
.footer-bottom{margin-top:52px;border-top:1px solid var(--line);padding:22px 0 26px;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:var(--text-3)}
/* ========== 移动抽屉 ========== */
.mobile-drawer{position:fixed;top:0;right:0;bottom:0;width:min(86vw,340px);background:var(--bg-2);border-left:1px solid var(--line);z-index:80;transform:translateX(102%);transition:transform var(--t);padding:20px;display:flex;flex-direction:column;gap:20px;overflow-y:auto}
.mobile-drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between}
.drawer-close{width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:var(--panel);color:var(--text);font-size:20px;line-height:1;cursor:pointer}
.drawer-close:hover{color:var(--primary);border-color:rgba(18,224,192,.45)}
.drawer-nav{display:flex;flex-direction:column;gap:10px}
.drawer-nav .chip{width:100%;justify-content:flex-start;height:46px;padding:0 18px}
.drawer-mask{position:fixed;inset:0;background:rgba(4,8,14,.66);opacity:0;visibility:hidden;transition:opacity var(--t),visibility var(--t);z-index:70}
.drawer-mask.is-open{opacity:1;visibility:visible}
/* ========== 滚动动效 ========== */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 480ms cubic-bezier(.2,.7,.3,1),transform 480ms cubic-bezier(.2,.7,.3,1)}
.reveal.is-visible{opacity:1;transform:none}
/* ========== 响应式 ========== */
@media (min-width:1024px){
  .mobile-drawer,.drawer-mask,.nav-toggle{display:none}
}
@media (max-width:1023px){
  :root{--sec:64px}
  .chip-nav,.header-cta{display:none}
  .nav-toggle{display:flex;margin-left:auto}
  .hero{padding:132px 0 72px}
  .flow{flex-wrap:wrap}
  .flow-step{flex:1 1 calc(50% - 10px)}
  .cta-panel{padding:32px}
}
@media (max-width:767px){
  :root{--sec:48px}
  .container{padding:0 16px}
  .container .grid-x.grid-padding-x{margin-left:-8px;margin-right:-8px}
  .container .grid-x.grid-padding-x > .cell{padding-left:8px;padding-right:8px}
  body{line-height:1.9}
  .hero{padding:120px 0 60px}
  .hero-sub{font-size:15.5px}
  .stat{flex:1 1 calc(50% - 7px);min-width:0}
  .hero-actions .btn{flex:1 1 100%}
  .story-tile img{height:200px}
  .story-tile.tile-2{width:100%;margin-top:-28px}
  .story-tile.tile-2 img{height:170px}
  .feature-media{height:190px}
  .news-row{flex-direction:column;align-items:stretch}
  .news-thumb{width:100%;height:172px}
  .news-meta{flex-direction:row;align-items:center;justify-content:space-between;min-width:0;text-align:left}
  .flow-step{flex:1 1 100%}
  .trust-card{width:230px}
  .cta-panel{padding:24px}
  .field-row{flex-direction:column}
  .field-row .btn{width:100%}
  .footer-col{padding-right:0;margin-bottom:28px}
  .faq-acc .accordion-title{font-size:15px;padding:0 16px}
  .faq-acc .accordion-content{padding:0 16px 20px 40px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* roulang page: article */
:root{
  --bg:#070D18;
  --bg-2:#0B1524;
  --panel:rgba(255,255,255,0.045);
  --line:rgba(255,255,255,0.10);
  --primary:#12E0C0;
  --primary-soft:#7CF0D8;
  --accent:#D8FF4F;
  --warn:#FF5A36;
  --text:#EAF1F8;
  --text-2:#9FB0C4;
  --text-3:#6C7C8F;
  --radius-card:16px;
  --radius-sm:10px;
  --radius-pill:999px;
  --shadow-1:0 12px 32px -18px rgba(0,0,0,.7);
  --shadow-2:0 20px 48px -20px rgba(0,0,0,.85);
  --gap:24px;
  --section:88px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --dur:240ms;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  background:
    radial-gradient(900px 420px at 12% -8%, rgba(18,224,192,.10), transparent 70%),
    radial-gradient(700px 380px at 92% 4%, rgba(216,255,79,.06), transparent 72%);
  pointer-events:none;
  z-index:0;
}
img{max-width:100%;display:block;border-radius:var(--radius-sm);}
a{color:var(--primary);text-decoration:none;transition:color var(--dur) var(--ease),opacity var(--dur) var(--ease);}
a:hover{color:var(--primary-soft);}
button,input{font:inherit;color:inherit;}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul{padding-left:0;list-style:none;}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:6px;}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
  position:relative;
  z-index:1;
}
.grid-x{margin-left:-12px;margin-right:-12px;}
.grid-x>.cell{padding-left:12px;padding-right:12px;}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(7,13,24,.92);
  border-bottom:1px solid var(--line);
  transition:background var(--dur) var(--ease),backdrop-filter var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.site-header.is-scrolled{
  background:var(--panel);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:0 18px 40px -30px rgba(0,0,0,.95);
}
.topbar-inner{
  display:flex;
  align-items:center;
  gap:20px;
  min-height:72px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--text);
  flex:0 0 auto;
}
.brand:hover{color:var(--text);}
.brand-mark{
  width:36px;height:36px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:12px;
  background:linear-gradient(135deg,rgba(18,224,192,.22),rgba(216,255,79,.10));
  border:1px solid rgba(18,224,192,.42);
  color:var(--primary);
}
.brand-mark svg{width:20px;height:20px;}
.brand-text{
  font-size:18px;
  font-weight:700;
  letter-spacing:.02em;
  white-space:nowrap;
}
.chip-nav{
  display:flex;
  align-items:center;
  gap:8px;
  margin-left:auto;
  flex-wrap:wrap;
}
.chip{
  display:inline-flex;
  align-items:center;
  height:36px;
  padding:0 16px;
  border-radius:var(--radius-pill);
  border:1px solid var(--line);
  color:var(--text-2);
  font-size:14px;
  white-space:nowrap;
  transition:all var(--dur) var(--ease);
}
.chip:hover{
  color:var(--text);
  border-color:rgba(18,224,192,.45);
  transform:translateY(-1px);
}
.chip.is-active{
  background:var(--primary);
  border-color:var(--primary);
  color:#04231F;
  font-weight:700;
}
.header-cta{flex:0 0 auto;margin-left:8px;}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:46px;
  padding:0 24px;
  border-radius:var(--radius-pill);
  border:1px solid transparent;
  font-size:15px;
  font-weight:700;
  cursor:pointer;
  transition:all var(--dur) var(--ease);
  text-align:center;
}
.btn-primary{
  background:linear-gradient(135deg,#12E0C0,#7CF0D8);
  color:#04231F;
  box-shadow:0 10px 30px -8px rgba(18,224,192,.55);
}
.btn-primary:hover{
  color:#04231F;
  filter:brightness(1.08);
  transform:translateY(-2px);
}
.btn-primary:active{transform:translateY(-1px);}
.btn-ghost{
  background:transparent;
  border-color:var(--primary);
  color:var(--primary);
}
.btn-ghost:hover{
  background:rgba(18,224,192,.08);
  color:var(--primary-soft);
  transform:translateY(-2px);
}
.btn-sm{height:38px;padding:0 18px;font-size:14px;}
.btn-block{width:100%;}
.btn-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  color:var(--primary);
  font-weight:600;
  padding-bottom:2px;
  background-image:linear-gradient(var(--primary),var(--primary));
  background-repeat:no-repeat;
  background-size:0% 1px;
  background-position:0 100%;
  transition:background-size var(--dur) var(--ease),color var(--dur) var(--ease);
}
.btn-link:hover{background-size:100% 1px;color:var(--primary-soft);}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:12px;
  border:1px solid var(--line);
  background:var(--bg-2);
  cursor:pointer;
  padding:0;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:5px;
  margin-left:auto;
}
.nav-toggle span{
  display:block;
  width:20px;height:2px;
  background:var(--text);
  border-radius:2px;
  transition:all var(--dur) var(--ease);
}
body.nav-open .nav-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg);}
body.nav-open .nav-toggle span:nth-child(2){opacity:0;}
body.nav-open .nav-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
.nav-mask{
  display:none;
  position:fixed;
  inset:0;
  background:rgba(4,9,18,.66);
  z-index:55;
  opacity:0;
  transition:opacity var(--dur) var(--ease);
}
body.nav-open .nav-mask{opacity:1;}

/* ---------- article hero ---------- */
.article-top{
  position:relative;
  overflow:hidden;
  border-bottom:1px solid var(--line);
  background-image:linear-gradient(180deg,rgba(7,13,24,.72),rgba(7,13,24,.94)),url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
}
.article-top::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(18,224,192,.5),transparent);
}
.article-top-inner{padding:34px 0 44px;}
.breadcrumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:13px;
  color:var(--text-3);
  margin-bottom:20px;
}
.breadcrumb a{color:var(--text-3);}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .sep{color:rgba(255,255,255,.22);}
.breadcrumb .current{
  color:var(--text-2);
  max-width:340px;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}
.article-head .eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  letter-spacing:.06em;
  color:var(--accent);
  margin-bottom:14px;
  font-weight:700;
}
.article-head .eyebrow::before{
  content:"";
  width:22px;height:1px;
  background:var(--accent);
  opacity:.7;
}
.article-head h1{
  font-size:clamp(28px,4.2vw,48px);
  line-height:1.22;
  font-weight:700;
  letter-spacing:-.01em;
  max-width:22em;
}
.meta-row{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 18px;
  margin-top:22px;
  padding-top:20px;
  border-top:1px solid var(--line);
  font-size:14px;
  color:var(--text-2);
  font-variant-numeric:tabular-nums;
}
.meta-row .meta-item{display:inline-flex;align-items:center;gap:8px;}
.meta-row i{color:var(--primary);font-size:13px;}
.badge{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 12px;
  border-radius:var(--radius-pill);
  background:rgba(18,224,192,.12);
  color:var(--primary);
  font-size:12px;
  letter-spacing:.06em;
  border:1px solid rgba(18,224,192,.24);
}
.badge-accent{background:rgba(216,255,79,.12);color:var(--accent);border-color:rgba(216,255,79,.26);}
.badge-warn{background:rgba(255,90,54,.12);color:var(--warn);border-color:rgba(255,90,54,.26);}

/* ---------- layout ---------- */
.section{padding:var(--section) 0;}
.section-sm{padding:56px 0;}
.article-layout{padding:56px 0 var(--section);}
.article-body-wrap{
  background:var(--bg-2);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:36px 36px 30px;
  box-shadow:var(--shadow-1);
}
.article-body{
  max-width:760px;
  font-size:16px;
  line-height:1.9;
  color:var(--text);
}
.article-body p{margin:0 0 18px;}
.article-body h2{
  font-size:clamp(22px,2.4vw,30px);
  line-height:1.35;
  font-weight:700;
  margin:40px 0 18px;
  padding-left:14px;
  border-left:3px solid var(--primary);
}
.article-body h3{
  font-size:21px;
  font-weight:600;
  margin:32px 0 14px;
  color:var(--text);
}
.article-body ul,.article-body ol{margin:0 0 20px;padding-left:22px;}
.article-body ul li,.article-body ol li{margin-bottom:10px;color:var(--text-2);}
.article-body ul li::marker{color:var(--primary);}
.article-body ol li::marker{color:var(--primary);font-weight:700;}
.article-body a{color:var(--primary);border-bottom:1px solid rgba(18,224,192,.35);}
.article-body a:hover{color:var(--primary-soft);border-bottom-color:var(--primary-soft);}
.article-body blockquote{
  margin:24px 0;
  padding:18px 22px;
  background:var(--bg);
  border-left:3px solid var(--primary);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  color:var(--text-2);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:12px;margin:24px 0 10px;}
.article-body figcaption{
  font-size:13px;
  color:var(--text-3);
  text-align:center;
  margin-bottom:24px;
}
.article-body pre{
  background:var(--bg);
  border:1px solid var(--line);
  border-radius:12px;
  padding:18px;
  overflow:auto;
  font-size:14px;
  line-height:1.7;
  margin:24px 0;
}
.article-body code{
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
  background:rgba(18,224,192,.10);
  color:var(--primary-soft);
  padding:2px 6px;
  border-radius:6px;
  font-size:14px;
}
.article-body pre code{background:none;color:var(--text-2);padding:0;}
.article-body table{
  width:100%;
  border-collapse:separate;
  border-spacing:0;
  margin:24px 0;
  font-size:14px;
  background:var(--bg);
  border:1px solid var(--line);
  border-radius:12px;
  overflow:hidden;
}
.article-body table th{
  background:rgba(18,224,192,.10);
  color:var(--text);
  font-weight:700;
  text-align:left;
  padding:12px 16px;
  border-bottom:1px solid var(--line);
}
.article-body table td{
  padding:12px 16px;
  border-bottom:1px solid var(--line);
  color:var(--text-2);
}
.article-body table tr:last-child td{border-bottom:none;}

/* ---------- sidebar ---------- */
.side-stack{display:flex;flex-direction:column;gap:20px;position:sticky;top:96px;}
.toc-card,.entry-card{
  border-radius:var(--radius-card);
  padding:22px;
}
.toc-card{
  background:var(--bg-2);
  border:1px solid var(--line);
  box-shadow:var(--shadow-1);
}
.toc-card h3,.entry-card h3{
  font-size:15px;
  font-weight:700;
  letter-spacing:.06em;
  color:var(--text-2);
  margin-bottom:14px;
  display:flex;
  align-items:center;
  gap:8px;
}
.toc-card h3 i,.entry-card h3 i{color:var(--primary);font-size:13px;}
.toc-list{display:flex;flex-direction:column;gap:4px;}
.toc-link{
  display:block;
  font-size:14px;
  color:var(--text-2);
  padding:8px 12px;
  border-radius:var(--radius-sm);
  border-left:2px solid transparent;
  line-height:1.6;
  transition:all var(--dur) var(--ease);
}
.toc-link:hover{background:rgba(18,224,192,.07);color:var(--text);}
.toc-link.is-current{
  color:var(--primary);
  background:rgba(18,224,192,.10);
  border-left-color:var(--primary);
  font-weight:600;
}
.toc-link.toc-sub{padding-left:24px;font-size:13px;}
.entry-card{
  background:var(--panel);
  border:1px solid var(--line);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.entry-card p{font-size:14px;color:var(--text-2);margin-bottom:16px;line-height:1.8;}
.entry-list{display:flex;flex-direction:column;gap:10px;margin-bottom:18px;}
.entry-list li{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:14px;
  color:var(--text-2);
}
.entry-list li i{color:var(--accent);font-size:12px;}

/* ---------- empty state ---------- */
.empty-state{
  text-align:center;
  padding:48px 24px;
  background:var(--bg-2);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
}
.empty-thumb{
  width:96px;height:72px;
  margin:0 auto 20px;
  border-radius:12px;
  background:linear-gradient(135deg,rgba(18,224,192,.25),var(--bg-2));
  display:flex;align-items:center;justify-content:center;
  color:var(--primary);
  font-size:26px;
  font-weight:700;
}
.empty-state h2{font-size:24px;margin-bottom:10px;}
.empty-state p{color:var(--text-2);max-width:460px;margin:0 auto 22px;font-size:15px;}

/* ---------- article footer nav ---------- */
.article-foot{
  margin-top:32px;
  padding-top:26px;
  border-top:1px solid var(--line);
}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-bottom:24px;}
.tag-row .tag-label{font-size:13px;color:var(--text-3);margin-right:4px;}
.tag{
  display:inline-flex;
  align-items:center;
  height:30px;
  padding:0 14px;
  border-radius:var(--radius-pill);
  border:1px solid var(--line);
  background:var(--bg);
  color:var(--text-2);
  font-size:13px;
  transition:all var(--dur) var(--ease);
}
.tag:hover{color:var(--primary);border-color:rgba(18,224,192,.45);}
.post-nav{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:16px;
}
.post-nav-card{
  display:block;
  padding:18px 20px;
  background:var(--bg);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  transition:all var(--dur) var(--ease);
}
.post-nav-card:hover{
  transform:translateY(-4px);
  border-color:rgba(18,224,192,.45);
  box-shadow:var(--shadow-2);
}
.post-nav-card .pn-label{
  font-size:12px;
  letter-spacing:.06em;
  color:var(--text-3);
  display:block;
  margin-bottom:8px;
}
.post-nav-card .pn-title{
  font-size:15px;
  font-weight:600;
  color:var(--text);
  line-height:1.6;
  display:block;
}

/* ---------- recommend ---------- */
.sec-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px;
  margin-bottom:32px;
  flex-wrap:wrap;
}
.sec-head .sec-kicker{
  font-size:12px;
  letter-spacing:.08em;
  color:var(--accent);
  font-weight:700;
  display:block;
  margin-bottom:10px;
}
.sec-head h2{
  font-size:clamp(24px,3vw,34px);
  line-height:1.3;
  font-weight:700;
}
.sec-head p{color:var(--text-2);font-size:15px;max-width:560px;margin-top:12px;}
.rec-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.rec-card{
  display:flex;
  flex-direction:column;
  background:var(--bg-2);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  transition:all var(--dur) var(--ease);
  box-shadow:var(--shadow-1);
}
.rec-card:hover{
  transform:translateY(-4px);
  border-color:rgba(18,224,192,.45);
  box-shadow:var(--shadow-2);
}
.rec-thumb{
  position:relative;
  aspect-ratio:16/10;
  overflow:hidden;
  background:linear-gradient(135deg,rgba(18,224,192,.28),var(--bg-2));
}
.rec-thumb img{
  width:100%;height:100%;
  object-fit:cover;
  border-radius:0;
  transition:transform 480ms var(--ease);
}
.rec-card:hover .rec-thumb img{transform:scale(1.04);}
.rec-thumb .rec-badge{
  position:absolute;
  left:12px;top:12px;
  height:26px;
  padding:0 12px;
  display:inline-flex;
  align-items:center;
  border-radius:var(--radius-pill);
  background:rgba(7,13,24,.78);
  color:var(--primary);
  font-size:12px;
  letter-spacing:.06em;
  backdrop-filter:blur(8px);
}
.rec-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1;}
.rec-body h3{
  font-size:18px;
  font-weight:600;
  line-height:1.5;
  margin-bottom:10px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.rec-body p{
  font-size:14px;
  color:var(--text-2);
  line-height:1.8;
  margin-bottom:16px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.rec-meta{
  margin-top:auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  font-size:13px;
  color:var(--text-3);
  font-variant-numeric:tabular-nums;
}
.rec-meta .rec-arrow{color:var(--primary);font-size:13px;}

/* ---------- subscribe ---------- */
.subscribe-panel{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  padding:36px;
  display:grid;
  grid-template-columns:1.1fr 1fr;
  gap:32px;
  align-items:center;
  box-shadow:var(--shadow-1);
}
.subscribe-panel h2{font-size:clamp(22px,2.6vw,30px);line-height:1.35;margin-bottom:12px;}
.subscribe-panel p{color:var(--text-2);font-size:15px;}
.sub-form{display:flex;flex-wrap:wrap;gap:12px;}
.form-field{
  flex:1 1 200px;
  min-width:0;
  height:48px;
  padding:0 16px;
  border-radius:12px;
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  color:var(--text);
  transition:all var(--dur) var(--ease);
}
.form-field::placeholder{color:var(--text-3);}
.form-field:focus{
  outline:none;
  border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(18,224,192,.15);
}
.form-tip{
  flex:0 0 100%;
  font-size:13px;
  color:var(--warn);
  min-height:18px;
}
.form-ok{color:var(--primary);}

/* ---------- footer ---------- */
.site-footer{
  border-top:1px solid var(--line);
  background:var(--bg-2);
  padding:64px 0 28px;
  margin-top:0;
  position:relative;
  z-index:1;
}
.footer-grid{row-gap:32px;}
.footer-col h4{
  font-size:15px;
  font-weight:700;
  margin-bottom:18px;
  color:var(--text);
}
.footer-col p{
  font-size:14px;
  color:var(--text-2);
  margin-top:16px;
  line-height:1.8;
  max-width:280px;
}
.footer-col ul{display:flex;flex-direction:column;gap:12px;}
.footer-col ul li a{
  font-size:14px;
  color:var(--text-2);
}
.footer-col ul li a:hover{color:var(--primary);}
.footer-bottom{
  margin-top:48px;
  padding-top:22px;
  border-top:1px solid var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  flex-wrap:wrap;
  font-size:13px;
  color:var(--text-3);
}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 520ms var(--ease),transform 520ms var(--ease);}
.reveal.is-in{opacity:1;transform:none;}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  :root{--section:64px;}
  .nav-toggle{display:flex;}
  .chip-nav{
    position:fixed;
    top:0;
    right:0;
    width:290px;
    max-width:86vw;
    height:100vh;
    background:var(--bg-2);
    border-left:1px solid var(--line);
    flex-direction:column;
    align-items:stretch;
    justify-content:flex-start;
    gap:12px;
    padding:88px 22px 32px;
    margin-left:0;
    transform:translateX(100%);
    transition:transform var(--dur) var(--ease);
    z-index:70;
    overflow-y:auto;
  }
  body.nav-open .chip-nav{transform:translateX(0);}
  .chip{height:44px;justify-content:center;font-size:15px;}
  .header-cta{display:none;}
  .nav-mask{display:block;pointer-events:none;}
  body.nav-open .nav-mask{pointer-events:auto;}
  .side-stack{position:static;margin-top:28px;}
  .subscribe-panel{grid-template-columns:1fr;padding:28px;}
  .rec-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:767px){
  :root{--section:48px;}
  .container{padding-left:16px;padding-right:16px;}
  .article-top-inner{padding:24px 0 32px;}
  .article-layout{padding:36px 0 var(--section);}
  .article-body-wrap{padding:24px 20px;}
  .article-body{line-height:1.9;}
  .post-nav{grid-template-columns:1fr;}
  .rec-grid{grid-template-columns:1fr;}
  .sec-head{margin-bottom:24px;}
  .breadcrumb .current{max-width:180px;}
  .subscribe-panel{padding:24px 20px;}
  .subscribe-panel .btn{width:100%;}
  .form-field{height:46px;}
  .article-body table{border-radius:10px;}
  .article-body table thead{display:none;}
  .article-body table,.article-body table tbody,.article-body table tr,.article-body table td{display:block;width:100%;}
  .article-body table tr{
    border-bottom:1px solid var(--line);
    padding:12px 14px;
  }
  .article-body table tr:last-child{border-bottom:none;}
  .article-body table td{
    border:none;
    padding:4px 0;
    display:flex;
    gap:12px;
  }
  .article-body table td::before{
    content:attr(data-label);
    color:var(--text-3);
    flex:0 0 84px;
    font-size:13px;
  }
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:519px){
  .brand-text{font-size:16px;}
  .article-head h1{font-size:26px;}
  .meta-row{gap:8px 14px;font-size:13px;}
  .btn{width:100%;}
  .header-cta .btn{width:auto;}
  .toc-card,.entry-card{padding:18px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:.01ms !important;animation-duration:.01ms !important;}
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category1 */
:root{
  --bg:#070D18;
  --bg-2:#0B1524;
  --panel:rgba(255,255,255,.045);
  --line:rgba(255,255,255,.10);
  --primary:#12E0C0;
  --primary-soft:#7CF0D8;
  --accent:#D8FF4F;
  --warn:#FF5A36;
  --text:#EAF1F8;
  --text-2:#9FB0C4;
  --text-3:#6C7C8F;
  --radius:16px;
  --radius-sm:10px;
  --radius-pill:999px;
  --shadow-1:0 12px 32px -18px rgba(0,0,0,.7);
  --shadow-2:0 20px 48px -20px rgba(0,0,0,.85);
  --space-section:88px;
  --ease:240ms cubic-bezier(.2,.7,.3,1);
  --font:-apple-system,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.no-scroll{overflow:hidden}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--text);line-height:1.3}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img{max-width:100%;display:block;border:0}
a{color:var(--primary);text-decoration:none;transition:color var(--ease),opacity var(--ease)}
a:hover{color:var(--primary-soft)}
button{font-family:inherit;cursor:pointer}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:var(--space-section) 0;position:relative}
.section--tight{padding:56px 0}
.eyebrow{display:inline-block;font-size:12px;letter-spacing:.12em;color:var(--accent);margin-bottom:14px}
.section-head{max-width:720px;margin-bottom:36px}
.section-head p{margin-top:14px;color:var(--text-2);font-size:16px}
h1{font-size:clamp(30px,4.6vw,54px);line-height:1.2}
h2{font-size:clamp(24px,3vw,36px);line-height:1.3}
h3{font-size:20px;line-height:1.4;font-weight:600}
.section-head h2 + p{max-width:640px}

/* ===== 顶部导航 ===== */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  padding:16px 0;
  border-bottom:1px solid transparent;
  transition:background var(--ease),padding var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.site-header.is-scrolled{
  padding:10px 0;
  background:rgba(7,13,24,.76);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border-bottom-color:var(--line);
  box-shadow:0 12px 32px -24px rgba(0,0,0,.9);
}
.topbar-inner{display:flex;align-items:center;gap:20px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text)}
.brand:hover{color:var(--text)}
.brand-mark{
  width:34px;height:34px;border-radius:12px;display:grid;place-items:center;flex:0 0 auto;
  background:linear-gradient(135deg,#12E0C0,#7CF0D8);color:#04231F;
  box-shadow:0 8px 22px -12px rgba(18,224,192,.9);
}
.brand-mark svg{width:19px;height:19px}
.brand-text{font-size:18px;font-weight:700;letter-spacing:.02em}
.chip-nav{display:flex;align-items:center;gap:8px;margin-left:auto;flex-wrap:nowrap}
.chip{
  display:inline-flex;align-items:center;white-space:nowrap;
  padding:8px 16px;border-radius:var(--radius-pill);
  border:1px solid var(--line);color:var(--text-2);
  font-size:14px;line-height:1.4;
  transition:background var(--ease),color var(--ease),border-color var(--ease),transform var(--ease);
}
.chip:hover{
  color:var(--text);border-color:rgba(18,224,192,.45);
  background:rgba(18,224,192,.08);transform:translateY(-1px);
}
.chip.is-active{background:var(--primary);border-color:var(--primary);color:#04231F;font-weight:600}
.chip.is-active:hover{color:#04231F;background:var(--primary-soft);border-color:var(--primary-soft)}
.header-cta{margin-left:4px;flex:0 0 auto}
.nav-toggle{
  display:none;width:44px;height:44px;margin-left:auto;padding:0;
  border-radius:12px;border:1px solid var(--line);background:var(--panel);
  flex-direction:column;align-items:center;justify-content:center;gap:4px;
  transition:border-color var(--ease),background var(--ease);
}
.nav-toggle:hover{border-color:rgba(18,224,192,.45);background:rgba(18,224,192,.08)}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--text)}

.drawer{
  position:fixed;top:0;right:0;bottom:0;z-index:80;
  width:min(84vw,340px);padding:80px 24px 32px;
  background:var(--bg-2);border-left:1px solid var(--line);
  transform:translateX(101%);transition:transform var(--ease);overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer-close{
  position:absolute;top:14px;right:14px;width:44px;height:44px;
  border-radius:12px;border:1px solid var(--line);background:var(--panel);
  color:var(--text);font-size:22px;line-height:1;display:grid;place-items:center;
  transition:border-color var(--ease),background var(--ease);
}
.drawer-close:hover{border-color:rgba(18,224,192,.45);background:rgba(18,224,192,.08)}
.drawer-title{font-size:12px;letter-spacing:.12em;color:var(--text-3);margin-bottom:14px}
.drawer-nav{display:flex;flex-direction:column;gap:10px}
.drawer-nav .chip{justify-content:center;padding:12px 16px;font-size:15px}
.drawer-mask{
  position:fixed;inset:0;z-index:70;background:rgba(4,8,15,.66);
  opacity:0;visibility:hidden;transition:opacity var(--ease),visibility var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--radius-pill);
  font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease),color var(--ease),border-color var(--ease),filter var(--ease);
}
.btn-sm{padding:9px 18px;font-size:14px}
.btn-primary{
  background:linear-gradient(135deg,#12E0C0,#7CF0D8);color:#04231F;
  box-shadow:0 10px 30px -8px rgba(18,224,192,.55);
}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-2px);color:#04231F}
.btn-primary:active{transform:translateY(-1px);box-shadow:0 6px 18px -10px rgba(18,224,192,.6)}
.btn-ghost{background:transparent;border-color:rgba(18,224,192,.55);color:var(--primary)}
.btn-ghost:hover{background:rgba(18,224,192,.08);color:var(--primary-soft);transform:translateY(-2px)}
.btn-text{background:none;border:0;padding:0;color:var(--primary);font-size:15px;font-weight:600;position:relative}
.btn-text::after{content:"";position:absolute;left:0;bottom:-3px;width:0;height:1px;background:var(--primary);transition:width var(--ease)}
.btn-text:hover::after{width:100%}

/* ===== 徽章 / 标签 ===== */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 11px;border-radius:var(--radius-pill);
  background:rgba(18,224,192,.12);color:var(--primary);
  font-size:12px;line-height:1.4;letter-spacing:.06em;white-space:nowrap;
}
.badge-accent{background:rgba(216,255,79,.12);color:var(--accent)}
.badge-warn{background:rgba(255,90,54,.12);color:var(--warn)}

/* ===== 首屏 ===== */
.page-hero{
  position:relative;padding:156px 0 72px;overflow:hidden;
  background-image:linear-gradient(180deg,rgba(7,13,24,.80),rgba(7,13,24,.94)),url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
}
.page-hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(18,224,192,.35),transparent);
}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:28px;flex-wrap:wrap}
.crumb a{color:var(--text-3)}
.crumb a:hover{color:var(--primary)}
.crumb .crumb-current{color:var(--text-2);max-width:220px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.hero-layout{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:44px;align-items:center}
.hero-copy h1{font-size:clamp(28px,3.8vw,44px);margin:16px 0 0}
.hero-sub{margin-top:18px;font-size:16px;color:var(--text-2);max-width:34em}
.hero-lead{margin-top:16px;font-size:15px;color:var(--text-2);max-width:44em;border-left:2px solid rgba(18,224,192,.5);padding-left:16px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}

.glass-card{
  background:var(--panel);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:26px;
  box-shadow:var(--shadow-1);
}
.hero-card-title{font-size:17px;font-weight:600;margin-bottom:16px}
.check-list li{
  position:relative;padding-left:24px;font-size:14.5px;color:var(--text-2);
  line-height:1.7;margin-bottom:12px;
}
.check-list li::before{
  content:"";position:absolute;left:2px;top:9px;width:7px;height:7px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 12px rgba(18,224,192,.75);
}
.check-list li:last-child{margin-bottom:0}
.hero-card-foot{
  display:flex;align-items:center;gap:8px;margin-top:18px;padding-top:16px;
  border-top:1px solid var(--line);font-size:13px;color:var(--text-3);
}
.dot{width:8px;height:8px;border-radius:50%;background:var(--accent);box-shadow:0 0 12px rgba(216,255,79,.8);flex:0 0 auto}

.stat-row{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;
  margin-top:52px;padding-top:30px;border-top:1px solid var(--line);
}
.stat-num{font-size:clamp(24px,3vw,32px);font-weight:700;letter-spacing:.02em;font-variant-numeric:tabular-nums;line-height:1.2}
.stat-num em{font-style:normal;font-size:14px;font-weight:500;color:var(--text-3);margin-left:6px}
.stat-label{font-size:13px;color:var(--text-2);margin-top:6px}

/* ===== 目录 + 内容卡流 ===== */
.content-grid{display:grid;grid-template-columns:250px minmax(0,1fr);gap:44px;align-items:start}
.toc{position:sticky;top:104px}
.toc-title{font-size:12px;letter-spacing:.12em;color:var(--text-3);margin-bottom:14px;padding-left:2px}
.toc-list{display:flex;flex-direction:column;gap:8px;border-left:1px solid var(--line);padding-left:14px}
.toc-list a{
  display:inline-flex;align-items:center;padding:8px 14px;border-radius:var(--radius-pill);
  border:1px solid transparent;color:var(--text-2);font-size:14px;
  transition:background var(--ease),color var(--ease),border-color var(--ease),transform var(--ease);
}
.toc-list a:hover{color:var(--text);background:rgba(18,224,192,.08);border-color:rgba(18,224,192,.35);transform:translateX(2px)}
.toc-note{
  margin-top:20px;padding:16px;border-radius:var(--radius-sm);
  background:var(--bg-2);border:1px solid var(--line);
  font-size:13px;color:var(--text-2);line-height:1.7;
}
.toc-note strong{color:var(--accent);font-weight:600}

.block + .block{margin-top:64px}
.block-head{margin-bottom:24px}
.block-head h2{font-size:clamp(21px,2.2vw,27px)}
.block-head p{margin-top:10px;color:var(--text-2);font-size:15px}

.card-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-1);color:var(--text);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.card:hover{transform:translateY(-4px);border-color:rgba(18,224,192,.45);box-shadow:var(--shadow-2);color:var(--text)}
.card-media{position:relative;overflow:hidden;background:linear-gradient(135deg,rgba(18,224,192,.55),var(--bg-2))}
.card-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform 400ms cubic-bezier(.2,.7,.3,1)}
.card:hover .card-media img{transform:scale(1.04)}
.card-body{display:flex;flex-direction:column;gap:12px;padding:20px 22px 22px;flex:1}
.card-body h3{font-size:18px;overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
.card-desc{
  font-size:14.5px;color:var(--text-2);line-height:1.75;
  overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;
}
.card-meta{
  display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}
.card-meta .meta-time{font-variant-numeric:tabular-nums}
.card-meta .meta-link{color:var(--primary);font-weight:600}
.card-meta .meta-link::after{content:" →";transition:margin-left var(--ease)}
.card:hover .meta-link::after{margin-left:3px}

/* ===== 准备事项：图文错位 ===== */
.prepare{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:48px;align-items:center}
.prepare-visual{position:relative;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-1);transform:rotate(-1deg)}
.prepare-visual img{width:100%;aspect-ratio:4/5;object-fit:cover}
.prepare-visual::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,13,24,0) 45%,rgba(7,13,24,.78));}
.prepare-visual figcaption{position:absolute;left:18px;bottom:16px;z-index:2;font-size:13px;color:var(--text-2);letter-spacing:.02em}
.checklist{counter-reset:prep}
.checklist li{
  position:relative;padding-left:52px;margin-bottom:22px;
}
.checklist li::before{
  counter-increment:prep;content:counter(prep,decimal-leading-zero);
  position:absolute;left:0;top:3px;width:34px;height:34px;border-radius:10px;
  display:grid;place-items:center;font-size:13px;font-weight:700;letter-spacing:.02em;
  color:var(--accent);background:rgba(216,255,79,.08);border:1px solid rgba(216,255,79,.22);
  font-variant-numeric:tabular-nums;
}
.checklist h3{font-size:17px;margin-bottom:6px}
.checklist p{font-size:14.5px;color:var(--text-2);line-height:1.75}
.checklist li:last-child{margin-bottom:0}

/* ===== 适用人群 ===== */
.persona-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.persona{
  padding:26px 24px;background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius);
  transition:border-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.persona:hover{border-color:rgba(18,224,192,.45);transform:translateY(-4px);box-shadow:var(--shadow-2)}
.persona h3{font-size:18px;margin:14px 0 10px}
.persona p{font-size:14.5px;color:var(--text-2);line-height:1.78}
.persona ul{margin-top:14px;padding-top:14px;border-top:1px solid var(--line)}
.persona ul li{font-size:13.5px;color:var(--text-3);padding-left:14px;position:relative;margin-bottom:8px}
.persona ul li::before{content:"";position:absolute;left:0;top:10px;width:5px;height:5px;border-radius:50%;background:var(--primary)}
.persona ul li:last-child{margin-bottom:0}

/* ===== 流程步骤 ===== */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px;counter-reset:step}
.step{
  position:relative;padding:26px 22px 24px;
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius);
  transition:border-color var(--ease),transform var(--ease);
}
.step:hover{border-color:rgba(18,224,192,.45);transform:translateY(-4px)}
.step::before{
  counter-increment:step;content:"0" counter(step);
  display:block;font-size:13px;font-weight:700;letter-spacing:.08em;
  color:var(--accent);margin-bottom:12px;font-variant-numeric:tabular-nums;
}
.step h3{font-size:17px;margin-bottom:8px}
.step p{font-size:14px;color:var(--text-2);line-height:1.75}

/* ===== FAQ ===== */
.faq-list{max-width:860px}
.faq-item{
  background:var(--bg-2);border:1px solid var(--line);border-radius:14px;
  margin-bottom:12px;overflow:hidden;
  transition:border-color var(--ease),border-left-color var(--ease);
  border-left:2px solid transparent;
}
.faq-item.is-open{border-left-color:var(--primary);border-color:rgba(18,224,192,.35)}
.faq-q{
  width:100%;background:none;border:0;color:var(--text);
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;padding:14px 20px;text-align:left;
  font-size:16px;font-weight:600;line-height:1.5;
}
.faq-q:hover{color:var(--primary-soft)}
.faq-icon{
  position:relative;width:18px;height:18px;flex:0 0 auto;
  transition:transform var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--primary);border-radius:2px;
}
.faq-icon::before{left:0;top:8px;width:18px;height:2px}
.faq-icon::after{left:8px;top:0;width:2px;height:18px;transition:opacity var(--ease)}
.faq-item.is-open .faq-icon{transform:rotate(90deg)}
.faq-item.is-open .faq-icon::after{opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height 320ms cubic-bezier(.2,.7,.3,1),padding var(--ease)}
.faq-item.is-open .faq-a{max-height:420px;padding:0 20px 20px}
.faq-a p{font-size:14.5px;color:var(--text-2);line-height:1.85;padding-left:20px;border-left:1px solid var(--line)}

/* ===== CTA ===== */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap;
  padding:40px 44px;border-radius:20px;
  background:
    radial-gradient(circle at 88% 18%,rgba(18,224,192,.16),transparent 55%),
    var(--bg-2);
  border:1px solid var(--line);
  box-shadow:var(--shadow-1);
}
.cta-copy{max-width:620px}
.cta-copy h2{font-size:clamp(22px,2.6vw,30px)}
.cta-copy p{margin-top:12px;color:var(--text-2);font-size:15px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ===== 页脚 ===== */
.site-footer{
  margin-top:24px;padding:64px 0 0;
  background:var(--bg-2);border-top:1px solid var(--line);
}
.footer-grid{padding-bottom:44px}
.footer-col h4{font-size:14px;letter-spacing:.06em;color:var(--text);margin-bottom:16px}
.footer-col p{margin-top:16px;font-size:14px;color:var(--text-2);line-height:1.8}
.footer-col ul li{margin-bottom:10px}
.footer-col ul li a{color:var(--text-2);font-size:14px}
.footer-col ul li a:hover{color:var(--primary)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  padding:20px 0 26px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}
.site-footer .brand-mark{width:30px;height:30px;border-radius:10px}
.site-footer .brand-text{font-size:16px}

/* ===== 动效 ===== */
.js-ready .reveal{opacity:0;transform:translateY(12px)}
.js-ready .reveal.is-visible{
  opacity:1;transform:none;
  transition:opacity 480ms cubic-bezier(.2,.7,.3,1),transform 480ms cubic-bezier(.2,.7,.3,1);
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition-duration:1ms !important}
  html{scroll-behavior:auto}
  .js-ready .reveal{opacity:1;transform:none}
}

/* ===== 响应式 ===== */
@media (max-width:1023px){
  :root{--space-section:64px}
  .chip-nav,.header-cta{display:none}
  .nav-toggle{display:flex}
  .hero-layout{grid-template-columns:1fr;gap:28px}
  .content-grid{grid-template-columns:1fr;gap:28px}
  .toc{position:static;top:auto}
  .toc-list{
    flex-direction:row;overflow-x:auto;gap:8px;padding:0 0 8px;
    border-left:0;scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;
  }
  .toc-list a{scroll-snap-align:start;border-color:var(--line)}
  .toc-note{margin-top:14px}
  .prepare{grid-template-columns:1fr;gap:28px}
  .prepare-visual{transform:none;max-width:520px}
  .prepare-visual img{aspect-ratio:16/10}
  .persona-grid{grid-template-columns:1fr;gap:16px}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
  .page-hero{padding:130px 0 56px}
  .cta-band{padding:32px 28px}
}
@media (max-width:767px){
  .card-grid{grid-template-columns:1fr}
  .stat-row{grid-template-columns:1fr;gap:18px;text-align:left}
}
@media (max-width:639px){
  :root{--space-section:48px}
  body{line-height:1.9}
  .container{padding:0 16px}
  .page-hero{padding:118px 0 46px}
  .hero-actions .btn{width:100%}
  .steps{grid-template-columns:1fr}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .hero-card{padding:20px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}

/* roulang page: category2 */
:root{
  --bg:#070D18;
  --bg-2:#0B1524;
  --panel:rgba(255,255,255,0.045);
  --line:rgba(255,255,255,0.10);
  --primary:#12E0C0;
  --primary-soft:#7CF0D8;
  --accent:#D8FF4F;
  --warn:#FF5A36;
  --text:#EAF1F8;
  --text-2:#9FB0C4;
  --text-3:#6C7C8F;
  --radius:16px;
  --radius-sm:10px;
  --radius-pill:999px;
  --shadow-1:0 12px 32px -18px rgba(0,0,0,.7);
  --shadow-2:0 20px 48px -20px rgba(0,0,0,.85);
  --ease:cubic-bezier(.2,.7,.3,1);
  --dur:240ms;
  --sec:88px;
  --font:-apple-system,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--radius-sm)}
a{color:inherit;text-decoration:none;transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease),background-color var(--dur) var(--ease),transform var(--dur) var(--ease)}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
h1,h2,h3,h4{line-height:1.3;font-weight:700}
button,input{font-family:inherit;font-size:inherit}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px}
.container{max-width:1200px;margin:0 auto;padding:0 24px;width:100%}
.num{font-variant-numeric:tabular-nums;font-weight:700;letter-spacing:.02em}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,13,24,.94);
  border-bottom:1px solid transparent;
  transition:background var(--dur) var(--ease),border-color var(--dur) var(--ease),backdrop-filter var(--dur) var(--ease);
}
.site-header.is-scrolled{
  background:var(--panel);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.topbar-inner{display:flex;align-items:center;gap:22px;height:74px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:34px;height:34px;border-radius:11px;display:inline-flex;align-items:center;justify-content:center;
  color:var(--primary);background:rgba(18,224,192,.10);border:1px solid rgba(18,224,192,.35);
}
.brand-mark svg{width:18px;height:18px}
.brand-text{font-size:17px;font-weight:700;letter-spacing:.02em;color:var(--text)}
.brand:hover .brand-text{color:var(--primary-soft)}
.chip-nav{display:flex;align-items:center;gap:8px;flex:1 1 auto;justify-content:center}
.chip{
  display:inline-flex;align-items:center;height:36px;padding:0 16px;
  border:1px solid var(--line);border-radius:var(--radius-pill);
  color:var(--text-2);font-size:14px;white-space:nowrap;
  transition:all var(--dur) var(--ease);
}
.chip:hover{color:var(--text);border-color:rgba(18,224,192,.45);transform:translateY(-1px)}
.chip.is-active{background:var(--primary);color:#04231F;border-color:transparent;font-weight:700}
.header-cta{flex:0 0 auto}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:transparent;cursor:pointer;padding:0;position:relative;
}
.nav-toggle span{
  display:block;width:18px;height:2px;background:var(--text);margin:4px auto;border-radius:2px;
  transition:transform var(--dur) var(--ease),opacity var(--dur) var(--ease);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--radius-pill);border:1px solid transparent;
  font-size:15px;font-weight:700;cursor:pointer;line-height:1;
  transition:transform var(--dur) var(--ease),filter var(--dur) var(--ease),background-color var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.btn-primary{
  background:linear-gradient(135deg,#12E0C0,#7CF0D8);
  color:#04231F;
  box-shadow:0 10px 30px -8px rgba(18,224,192,.55);
}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-2px)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;border-color:var(--primary);color:var(--primary)}
.btn-ghost:hover{background:rgba(18,224,192,.08);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{padding:9px 18px;font-size:14px}
.btn-link{color:var(--primary);font-weight:600;display:inline-flex;align-items:center;gap:6px;position:relative}
.btn-link::after{
  content:"";position:absolute;left:0;bottom:-3px;height:1px;width:0;background:var(--primary);
  transition:width var(--dur) var(--ease);
}
.btn-link:hover::after{width:100%}

/* ---------- chips / badges ---------- */
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  border-radius:var(--radius-pill);background:rgba(18,224,192,.12);color:var(--primary);
  font-size:12px;letter-spacing:.06em;line-height:1;
}
.badge-accent{background:rgba(216,255,79,.14);color:var(--accent)}
.badge-warn{background:rgba(255,90,54,.14);color:var(--warn)}

/* ---------- banner ---------- */
.page-banner{position:relative;overflow:hidden;background:var(--bg-2)}
.page-banner::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  opacity:.55;
}
.page-banner::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,13,24,.72),rgba(7,13,24,.94));
}
.banner-inner{position:relative;z-index:2;padding:64px 0 72px}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:22px;flex-wrap:wrap}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{opacity:.5}
.breadcrumb .current{max-width:220px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--text-2)}
.banner-grid{align-items:center}
.banner-title{font-size:clamp(28px,4.2vw,48px);line-height:1.2;margin-bottom:18px}
.banner-title em{font-style:normal;color:var(--primary)}
.banner-lead{color:var(--text-2);max-width:640px;font-size:16.5px;margin-bottom:26px}
.banner-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px}
.banner-stats{display:flex;flex-wrap:wrap;gap:28px}
.stat-item{display:flex;flex-direction:column;gap:2px}
.stat-item strong{font-size:24px;color:var(--text)}
.stat-item span{font-size:13px;color:var(--text-3)}

/* ticket card (hero 玻璃卡) */
.ticket-card{
  background:var(--panel);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:24px;
  box-shadow:var(--shadow-1);
  position:relative;
  overflow:hidden;
}
.ticket-card::before{
  content:"";position:absolute;left:24px;right:24px;top:96px;
  border-top:1px dashed rgba(255,255,255,.18);
}
.ticket-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px}
.ticket-head h2{font-size:16px;font-weight:600;color:var(--text-2)}
.ticket-rows{display:flex;flex-direction:column;gap:12px;padding-top:22px}
.ticket-row{display:flex;align-items:baseline;justify-content:space-between;gap:16px;font-size:14.5px}
.ticket-row span{color:var(--text-3)}
.ticket-row strong{color:var(--text);font-weight:600}
.ticket-foot{margin-top:20px;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--text-3)}

/* ---------- sections ---------- */
.section{padding:var(--sec) 0}
.section-tight{padding:56px 0}
.section-head{margin-bottom:36px;max-width:720px}
.section-head .eyebrow{display:inline-block;color:var(--accent);font-size:12px;letter-spacing:.12em;margin-bottom:12px}
.section-head h2{font-size:clamp(24px,3vw,34px);margin-bottom:14px}
.section-head p{color:var(--text-2)}
.section-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap}

/* highlights */
.highlight-strip{
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  background:var(--line);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
}
.highlight-item{background:var(--bg-2);padding:26px 22px;transition:background-color var(--dur) var(--ease)}
.highlight-item:hover{background:#0E1B2D}
.highlight-item .idx{color:var(--accent);font-size:13px;letter-spacing:.08em;display:block;margin-bottom:12px}
.highlight-item h3{font-size:18px;margin-bottom:8px}
.highlight-item p{color:var(--text-2);font-size:14.5px;line-height:1.7}

/* stagger cards */
.stagger-col{display:flex;flex-direction:column;gap:24px}
.stagger-offset{margin-top:44px}
.show-card{
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
  display:flex;flex-direction:column;
}
.show-card:hover{transform:translateY(-4px);border-color:rgba(18,224,192,.45);box-shadow:var(--shadow-2)}
.show-card figure{margin:0;position:relative;overflow:hidden;background:linear-gradient(135deg,#12E0C0,#0B1524)}
.show-card figure img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform 420ms var(--ease)}
.show-card:hover figure img{transform:scale(1.03)}
.show-card.ratio-43 figure{aspect-ratio:4/3}
.show-card.ratio-1610 figure{aspect-ratio:16/10}
.show-card .card-body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.show-card .card-top{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.show-card h3{font-size:20px;line-height:1.4}
.show-card p{color:var(--text-2);font-size:14.8px;line-height:1.75}
.card-meta{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--text-3);
}
.card-meta .go{color:var(--primary);font-weight:600}

/* scenario block */
.scenario-grid{align-items:center}
.scenario-figure{position:relative;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line)}
.scenario-figure img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:0}
.scenario-figure figcaption{
  position:absolute;left:16px;bottom:16px;background:rgba(7,13,24,.78);
  border:1px solid var(--line);border-radius:var(--radius-pill);
  padding:6px 14px;font-size:12.5px;color:var(--text-2);
}
.scenario-list{display:flex;flex-direction:column;gap:18px;margin-top:22px}
.scenario-item{
  display:flex;gap:16px;padding:18px 20px;border:1px solid var(--line);border-radius:var(--radius);
  background:var(--bg-2);transition:border-color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.scenario-item:hover{border-color:rgba(18,224,192,.45);transform:translateX(4px)}
.scenario-item .s-idx{
  flex:0 0 auto;width:34px;height:34px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  background:rgba(216,255,79,.12);color:var(--accent);font-size:13px;
}
.scenario-item h3{font-size:17px;margin-bottom:4px}
.scenario-item p{color:var(--text-2);font-size:14.5px;line-height:1.72}

/* steps */
.steps-row{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.step-card{
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px 22px;position:relative;overflow:hidden;
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.step-card:hover{transform:translateY(-4px);border-color:rgba(18,224,192,.45)}
.step-card::after{
  content:"";position:absolute;top:26px;right:-18px;width:36px;height:1px;
  background:rgba(18,224,192,.5);
}
.step-card:last-child::after{display:none}
.step-card .s-num{font-size:14px;color:var(--accent);letter-spacing:.08em;display:block;margin-bottom:14px}
.step-card h3{font-size:18px;margin-bottom:8px}
.step-card p{color:var(--text-2);font-size:14.5px;line-height:1.72}

/* faq */
.faq-list{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--bg-2)}
.faq-item{border-bottom:1px solid var(--line);border-left:2px solid transparent;transition:border-color var(--dur) var(--ease),background-color var(--dur) var(--ease)}
.faq-item:last-child{border-bottom:none}
.faq-item[open]{border-left-color:var(--primary);background:#0D1929}
.faq-item summary{
  height:56px;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:0 22px;cursor:pointer;font-size:16.5px;font-weight:600;list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";flex:0 0 auto;color:var(--primary);font-size:22px;font-weight:400;line-height:1;
  transition:transform var(--dur) var(--ease);
}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-body{padding:0 22px 22px 20px;color:var(--text-2);font-size:15px;line-height:1.8}
.faq-body p+p{margin-top:12px}

/* cta */
.cta-panel{
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius);
  padding:38px 36px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  box-shadow:var(--shadow-1);
}
.cta-panel h2{font-size:clamp(22px,2.6vw,30px);margin-bottom:10px}
.cta-panel p{color:var(--text-2);max-width:560px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* footer */
.site-footer{background:#050A12;border-top:1px solid var(--line);padding:64px 0 28px;margin-top:40px}
.footer-grid{gap:32px 0}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--text)}
.footer-col p{color:var(--text-2);font-size:14.5px;line-height:1.8;margin-top:16px;max-width:280px}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col ul a{color:var(--text-2);font-size:14.5px}
.footer-col ul a:hover{color:var(--primary)}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);
}

/* reveal */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 520ms var(--ease),transform 520ms var(--ease)}
.reveal.in-view{opacity:1;transform:none}

/* drawer */
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;width:86%;max-width:340px;z-index:80;
  background:#08111E;border-left:1px solid var(--line);padding:76px 20px 28px;
  transform:translateX(102%);transition:transform var(--dur) var(--ease);
  display:flex;flex-direction:column;gap:10px;overflow-y:auto;
}
.mobile-drawer.is-open{transform:translateX(0)}
.drawer-close{
  position:absolute;top:16px;right:16px;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:transparent;color:var(--text);font-size:20px;cursor:pointer;line-height:1;
}
.mobile-drawer .chip{width:100%;justify-content:center;height:44px;font-size:15px}
.drawer-cta{margin-top:14px}
body.lock{overflow:hidden}

/* responsive */
@media screen and (max-width:1024px){
  :root{--sec:64px}
  .chip-nav{display:none}
  .header-cta{display:none}
  .nav-toggle{display:block;margin-left:auto}
  .highlight-strip{grid-template-columns:repeat(2,1fr)}
  .steps-row{grid-template-columns:repeat(2,1fr)}
  .stagger-offset{margin-top:0}
}
@media screen and (max-width:768px){
  .container{padding:0 16px}
  .banner-inner{padding:44px 0 52px}
  .banner-stats{gap:18px}
  .cta-panel{padding:28px 22px;flex-direction:column;align-items:flex-start}
  .scenario-figure img{aspect-ratio:16/10}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media screen and (max-width:640px){
  :root{--sec:48px}
  body{line-height:1.9}
  .highlight-strip{grid-template-columns:1fr}
  .steps-row{grid-template-columns:1fr}
  .ticket-card{padding:20px}
  .banner-actions .btn{width:100%}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category3 */
:root{
  --bg:#070D18;
  --bg-2:#0B1524;
  --panel:rgba(255,255,255,.045);
  --line:rgba(255,255,255,.10);
  --primary:#12E0C0;
  --primary-soft:#7CF0D8;
  --accent:#D8FF4F;
  --warn:#FF5A36;
  --text:#EAF1F8;
  --text-2:#9FB0C4;
  --text-3:#6C7C8F;
  --ink:#04231F;
  --radius-card:16px;
  --radius-sm:10px;
  --radius-pill:999px;
  --shadow-1:0 12px 32px -18px rgba(0,0,0,.7);
  --shadow-2:0 20px 48px -20px rgba(0,0,0,.85);
  --glow:0 10px 30px -8px rgba(18,224,192,.55);
  --dur:240ms;
  --ease:cubic-bezier(.2,.7,.3,1);
  --section:88px;
  --gutter:24px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:var(--primary);text-decoration:none;transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease),background-color var(--dur) var(--ease),transform var(--dur) var(--ease)}
a:hover{color:var(--primary-soft)}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:.01em;color:var(--text)}
h1{font-size:clamp(30px,4.6vw,54px);line-height:1.2}
h2{font-size:clamp(24px,3vw,36px);line-height:1.3}
h3{font-size:21px;line-height:1.4;font-weight:600}
h4{font-size:16px;line-height:1.5;font-weight:600}
p{margin:0 0 18px}
ul{margin:0;padding:0;list-style:none}
.num{font-variant-numeric:tabular-nums;font-weight:700;letter-spacing:.02em}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 var(--gutter)}
.grid-padding-x>.cell{padding-left:12px;padding-right:12px}
.section{padding:var(--section) 0}
.section-tight{padding:56px 0}
.section-head{max-width:760px;margin-bottom:36px}
.section-head h2{margin-bottom:14px}
.section-head p{color:var(--text-2);font-size:16px;margin:0}
.section-head .eyebrow{margin-bottom:14px;display:inline-block}
.eyebrow{
  display:inline-block;
  font-size:12px;
  letter-spacing:.06em;
  color:var(--accent);
  border:1px solid rgba(216,255,79,.32);
  border-radius:var(--radius-pill);
  padding:4px 12px;
  line-height:1.4;
}
.muted{color:var(--text-2)}
.mono-line{height:1px;background:var(--line);border:0;margin:0}

/* ============ 头部导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  background:rgba(7,13,24,.72);
  border-bottom:1px solid transparent;
  transition:background-color var(--dur) var(--ease),border-color var(--dur) var(--ease),backdrop-filter var(--dur) var(--ease);
}
.site-header.is-scrolled{
  background:var(--panel);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom-color:var(--line);
}
.topbar-inner{display:flex;align-items:center;gap:16px;min-height:76px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text);flex:0 0 auto}
.brand:hover{color:var(--text)}
.brand-mark{
  width:34px;height:34px;border-radius:10px;flex:0 0 auto;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--primary),var(--primary-soft));
  color:var(--ink);
  box-shadow:var(--glow);
}
.brand-mark svg{width:19px;height:19px}
.brand-text{font-size:18px;font-weight:700;letter-spacing:.04em}
.chip-nav{display:flex;align-items:center;gap:8px;margin-left:auto;overflow-x:auto;scrollbar-width:none}
.chip-nav::-webkit-scrollbar{display:none}
.chip{
  display:inline-flex;align-items:center;white-space:nowrap;
  padding:8px 16px;border-radius:var(--radius-pill);
  border:1px solid var(--line);color:var(--text-2);
  font-size:14px;line-height:1.4;
  transition:all var(--dur) var(--ease);
}
.chip:hover{color:var(--text);border-color:rgba(18,224,192,.45);transform:translateY(-1px)}
.chip.is-active{background:var(--primary);border-color:var(--primary);color:var(--ink);font-weight:600}
.chip.is-active:hover{color:var(--ink)}
.header-cta{flex:0 0 auto;margin-left:8px}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:transparent;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;transition:transform var(--dur) var(--ease),opacity var(--dur) var(--ease)}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* 抽屉 */
.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(320px,84vw);z-index:90;
  background:var(--bg-2);border-left:1px solid var(--line);
  padding:20px;transform:translateX(105%);
  transition:transform var(--dur) var(--ease);
  overflow-y:auto;
}
.nav-drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px}
.drawer-close{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:transparent;color:var(--text);font-size:22px;line-height:1;cursor:pointer;
}
.drawer-close:hover{border-color:rgba(18,224,192,.45);color:var(--primary)}
.drawer-nav{display:flex;flex-direction:column;gap:10px;margin-bottom:24px}
.drawer-nav .chip{justify-content:center;padding:12px 16px}
.drawer-cta{width:100%;justify-content:center}
.drawer-mask{
  position:fixed;inset:0;background:rgba(4,8,16,.66);z-index:80;
  opacity:0;visibility:hidden;transition:opacity var(--dur) var(--ease),visibility var(--dur) var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-pill);border:1px solid transparent;
  padding:13px 26px;font-size:15px;font-weight:600;line-height:1.2;
  cursor:pointer;text-align:center;
  transition:all var(--dur) var(--ease);
}
.btn-primary{
  background:linear-gradient(135deg,var(--primary),var(--primary-soft));
  color:var(--ink);box-shadow:var(--glow);
}
.btn-primary:hover{color:var(--ink);filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 16px 34px -10px rgba(18,224,192,.6)}
.btn-primary:active{transform:translateY(-1px)}
.btn-ghost{background:transparent;border-color:var(--primary);color:var(--primary)}
.btn-ghost:hover{background:rgba(18,224,192,.08);color:var(--primary-soft);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(-1px)}
.btn-sm{padding:9px 18px;font-size:14px}
.btn-block{width:100%}
.link-more{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--primary);font-size:14px;font-weight:600;
  border-bottom:1px solid transparent;
}
.link-more::after{content:"→";transition:transform var(--dur) var(--ease)}
.link-more:hover{border-bottom-color:var(--primary-soft)}
.link-more:hover::after{transform:translateX(4px)}

/* ============ Hero ============ */
.hero{position:relative;padding:150px 0 84px;overflow:hidden}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  transform:scale(1.02);
}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,13,24,.78) 0%,rgba(7,13,24,.66) 42%,rgba(7,13,24,.94) 88%,var(--bg) 100%);
}
.hero-inner{position:relative;z-index:2}
.hero h1{margin:16px 0 18px;max-width:14em}
.hero-lead{
  color:var(--text-2);font-size:17px;line-height:1.9;
  max-width:38em;margin-bottom:28px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:30px}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px}
.stat-badge{
  display:inline-flex;align-items:baseline;gap:8px;
  padding:10px 16px;border-radius:var(--radius-pill);
  background:rgba(255,255,255,.05);border:1px solid var(--line);
  font-size:13px;color:var(--text-2);
}
.stat-badge b{color:var(--accent);font-size:18px;font-variant-numeric:tabular-nums}

.glass-card{
  background:var(--panel);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:24px;
  box-shadow:var(--shadow-1);
}
.hero-card{margin-top:8px}
.hero-card h2{font-size:18px;margin-bottom:6px}
.hero-card .muted{font-size:13px;line-height:1.7;margin-bottom:18px}
.status-list{display:flex;flex-direction:column;gap:2px}
.status-item{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:12px 0;border-bottom:1px dashed rgba(255,255,255,.09);
  font-size:14px;
}
.status-item:last-child{border-bottom:0}
.status-item span:first-child{color:var(--text-2)}
.status-item .val{color:var(--text);font-weight:600}
.dot-live{
  display:inline-block;width:7px;height:7px;border-radius:50%;
  background:var(--primary);margin-right:8px;
  box-shadow:0 0 0 4px rgba(18,224,192,.14);
}

/* ============ 时间轴 ============ */
.timeline{position:relative;margin-top:8px}
.timeline::before{
  content:"";position:absolute;left:19px;top:12px;bottom:12px;width:2px;
  background:linear-gradient(180deg,rgba(18,224,192,.55),rgba(18,224,192,.06));
}
.tl-item{position:relative;padding-left:70px;padding-bottom:34px}
.tl-item:last-child{padding-bottom:0}
.tl-num{
  position:absolute;left:0;top:0;width:40px;height:40px;border-radius:50%;
  background:var(--bg-2);border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;
  color:var(--accent);font-size:13px;font-weight:700;font-variant-numeric:tabular-nums;
  transition:border-color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.tl-card{
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px 24px;box-shadow:var(--shadow-1);
  transition:border-color var(--dur) var(--ease),transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.tl-item:hover .tl-card{border-color:rgba(18,224,192,.45);transform:translateY(-4px);box-shadow:var(--shadow-2)}
.tl-item:hover .tl-num{border-color:rgba(18,224,192,.5);transform:scale(1.05)}
.tl-card h3{margin-bottom:10px}
.tl-card p{color:var(--text-2);font-size:15px;margin-bottom:14px}
.tl-meta{display:flex;flex-wrap:wrap;gap:10px;align-items:center;font-size:13px;color:var(--text-3)}
.tag{
  display:inline-flex;align-items:center;
  padding:4px 11px;border-radius:var(--radius-pill);
  background:rgba(18,224,192,.12);color:var(--primary);
  font-size:12px;letter-spacing:.06em;line-height:1.4;
}
.tag-accent{background:rgba(216,255,79,.14);color:var(--accent)}
.tag-warn{background:rgba(255,90,54,.14);color:var(--warn)}

/* ============ 图文权益区 ============ */
.split{display:grid;gap:36px;align-items:start}
.split-7-5{grid-template-columns:minmax(0,7fr) minmax(0,5fr)}
.split-media{position:relative}
.split-media img{
  width:100%;border-radius:var(--radius-card);object-fit:cover;aspect-ratio:4/3;
  border:1px solid var(--line);box-shadow:var(--shadow-1);
}
.split-media .float-chip{
  position:absolute;left:18px;bottom:18px;
  background:rgba(7,13,24,.86);border:1px solid var(--line);
  border-radius:var(--radius-sm);padding:10px 14px;font-size:13px;color:var(--text-2);
}
.split-media .float-chip b{color:var(--accent);font-variant-numeric:tabular-nums}
.benefit-list{display:flex;flex-direction:column;gap:18px;margin-top:22px}
.benefit-item{display:flex;gap:14px;align-items:flex-start}
.benefit-item .bullet{
  flex:0 0 auto;width:22px;height:22px;border-radius:50%;margin-top:6px;
  background:rgba(18,224,192,.14);color:var(--primary);
  display:flex;align-items:center;justify-content:center;font-size:12px;
}
.benefit-item h4{margin-bottom:4px}
.benefit-item p{color:var(--text-2);font-size:14px;margin:0}
.kpi-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.kpi{
  flex:1 1 130px;background:var(--bg-2);border:1px solid var(--line);
  border-radius:var(--radius-sm);padding:16px;
}
.kpi b{display:block;font-size:24px;color:var(--accent);font-variant-numeric:tabular-nums;line-height:1.3}
.kpi span{font-size:13px;color:var(--text-3)}

/* ============ 周期时间卡片 ============ */
.cycle-grid{display:grid;gap:20px;grid-template-columns:repeat(4,minmax(0,1fr));margin-top:8px}
.cycle-card{
  position:relative;background:var(--bg-2);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:24px 22px;
  box-shadow:var(--shadow-1);
  transition:border-color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.cycle-card::before{
  content:"";position:absolute;left:22px;top:0;width:52px;height:3px;border-radius:0 0 3px 3px;
  background:linear-gradient(90deg,var(--primary),var(--accent));
}
.cycle-card:hover{border-color:rgba(18,224,192,.45);transform:translateY(-4px)}
.cycle-card .cycle-time{font-size:13px;color:var(--accent);letter-spacing:.06em;display:block;margin:6px 0 12px}
.cycle-card h3{font-size:18px;margin-bottom:10px}
.cycle-card p{color:var(--text-2);font-size:14px;margin:0}

/* ============ 须知提示 ============ */
.notice-panel{
  background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:28px;box-shadow:var(--shadow-1);
}
.notice-item{
  display:flex;gap:14px;padding:16px 0;border-bottom:1px dashed rgba(255,255,255,.09);
}
.notice-item:last-child{border-bottom:0;padding-bottom:0}
.notice-item:first-child{padding-top:0}
.notice-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:8px;margin-top:4px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(255,90,54,.14);color:var(--warn);font-size:13px;font-weight:700;
}
.notice-item h4{margin-bottom:4px}
.notice-item p{margin:0;color:var(--text-2);font-size:14px}

/* ============ 常见问题 ============ */
.faq-list{margin-top:8px;border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  list-style:none;cursor:pointer;position:relative;
  padding:22px 46px 22px 20px;font-size:16px;font-weight:600;
  transition:color var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";position:absolute;right:18px;top:50%;transform:translateY(-50%);
  color:var(--primary);font-size:20px;line-height:1;transition:transform var(--dur) var(--ease);
}
.faq-item[open] summary::after{transform:translateY(-50%) rotate(45deg)}
.faq-item summary:hover{color:var(--primary-soft)}
.faq-item[open] summary{color:var(--primary)}
.faq-answer{
  padding:0 24px 22px 20px;color:var(--text-2);font-size:15px;
  border-left:2px solid var(--primary);margin-left:20px;
}

/* ============ CTA 订阅 ============ */
.cta-section{padding:0 0 var(--section)}
.cta-panel{
  background:var(--panel);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:38px;
  box-shadow:var(--shadow-2);
  display:grid;gap:28px;grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  align-items:center;
}
.cta-panel h2{margin-bottom:12px;font-size:clamp(22px,2.6vw,30px)}
.cta-panel p{color:var(--text-2);margin:0;font-size:15px}
.subscribe-form{display:flex;flex-direction:column;gap:12px}
.field-row{display:flex;gap:12px;flex-wrap:wrap}
.field{flex:1 1 200px}
.field label{display:block;font-size:13px;color:var(--text-3);margin-bottom:6px}
.input{
  width:100%;background:var(--panel);border:1px solid var(--line);
  border-radius:12px;padding:13px 16px;color:var(--text);font-size:15px;
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.input::placeholder{color:var(--text-3)}
.input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(18,224,192,.15)}
.form-hint{font-size:13px;color:var(--text-3);margin:0}
.form-error{font-size:13px;color:var(--warn);margin:0;display:none}
.form-error.is-show{display:block}
.form-ok{font-size:13px;color:var(--primary);margin:0;display:none}
.form-ok.is-show{display:block}

/* ============ 底部返回 ============ */
.back-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:34px}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--bg-2);border-top:1px solid var(--line);
  padding:64px 0 0;margin-top:0;
}
.footer-grid{padding-bottom:40px}
.footer-col{margin-bottom:28px}
.footer-col .brand{margin-bottom:14px}
.footer-col p{color:var(--text-2);font-size:14px;line-height:1.8;margin:0;max-width:26em}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--text)}
.footer-col ul li{margin-bottom:10px}
.footer-col ul a{color:var(--text-2);font-size:14px}
.footer-col ul a:hover{color:var(--primary)}
.footer-bottom{
  border-top:1px solid var(--line);padding:20px 0 26px;
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 480ms var(--ease),transform 480ms var(--ease)}
.reveal.is-visible{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}

/* ============ 响应式 ============ */
@media (max-width:1200px){
  :root{--section:72px}
  .cycle-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:1024px){
  .chip-nav{display:none}
  .header-cta{display:none}
  .nav-toggle{display:flex;margin-left:auto}
  .topbar-inner{justify-content:space-between}
  .split-7-5{grid-template-columns:1fr}
  .cta-panel{grid-template-columns:1fr;padding:30px}
  .hero{padding:130px 0 64px}
  :root{--section:64px}
}
@media (max-width:768px){
  .cycle-grid{grid-template-columns:1fr}
  .hero h1{max-width:none}
  .tl-item{padding-left:56px}
  .timeline::before{left:15px}
  .tl-num{width:32px;height:32px;font-size:12px}
  .tl-card{padding:18px}
  .footer-bottom{flex-direction:column}
}
@media (max-width:520px){
  :root{--gutter:16px;--section:48px}
  body{line-height:1.9}
  .hero{padding:118px 0 52px}
  .hero-actions .btn{width:100%}
  .stat-badge{width:100%;justify-content:space-between}
  .btn{padding:12px 20px}
  .cta-panel{padding:24px}
  .notice-panel{padding:20px}
  .faq-item summary{padding:18px 42px 18px 14px;font-size:15px}
  .faq-answer{margin-left:14px;padding:0 16px 18px 14px}
}

/* roulang page: category4 */
:root{
  --bg:#070D18;
  --bg-2:#0B1524;
  --panel:rgba(255,255,255,.045);
  --line:rgba(255,255,255,.10);
  --line-strong:rgba(18,224,192,.45);
  --primary:#12E0C0;
  --primary-soft:#7CF0D8;
  --accent:#D8FF4F;
  --warn:#FF5A36;
  --text:#EAF1F8;
  --text-2:#9FB0C4;
  --text-3:#6C7C8F;
  --radius:16px;
  --radius-sm:10px;
  --shadow-1:0 12px 32px -18px rgba(0,0,0,.7);
  --shadow-2:0 20px 48px -20px rgba(0,0,0,.85);
  --ease:cubic-bezier(.2,.7,.3,1);
  --t:240ms;
  --gap:24px;
  --sec:88px;
  --font:-apple-system,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.is-locked{overflow:hidden;}
img{max-width:100%;height:auto;display:block;border-style:none;}
a{color:var(--primary);text-decoration:none;transition:color var(--t) var(--ease),opacity var(--t) var(--ease);}
a:hover{color:var(--primary-soft);}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700;color:var(--text);}
p{margin:0 0 18px;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button,input{font-family:inherit;font-size:inherit;}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.grid-x.grid-padding-x{margin-left:-12px;margin-right:-12px;}
.grid-x.grid-padding-x>.cell{padding-left:12px;padding-right:12px;}
.num{font-variant-numeric:tabular-nums;font-weight:700;letter-spacing:.02em;}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:linear-gradient(180deg,rgba(7,13,24,.98),rgba(7,13,24,.78));
  border-bottom:1px solid transparent;
  transition:background var(--t) var(--ease),border-color var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.site-header.is-scrolled{
  background:var(--panel);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom-color:var(--line);
  box-shadow:0 10px 30px -22px rgba(0,0,0,.9);
}
.topbar-inner{
  display:flex;
  align-items:center;
  gap:20px;
  min-height:72px;
  padding:10px 0;
}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text);flex:0 0 auto;}
.brand:hover{color:var(--text);}
.brand-mark{
  width:36px;height:36px;flex:0 0 36px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:12px;
  color:#04231F;
  background:linear-gradient(135deg,var(--primary),var(--primary-soft));
  box-shadow:0 10px 26px -12px rgba(18,224,192,.7);
}
.brand-mark svg{width:20px;height:20px;}
.brand-text{font-size:19px;font-weight:700;letter-spacing:.02em;}
.chip-nav{display:flex;align-items:center;gap:8px;margin-left:8px;flex:1 1 auto;flex-wrap:wrap;}
.chip{
  display:inline-flex;align-items:center;justify-content:center;
  padding:8px 18px;
  border-radius:999px;
  border:1px solid var(--line);
  color:var(--text-2);
  font-size:15px;
  line-height:1.4;
  transition:all var(--t) var(--ease);
  white-space:nowrap;
}
.chip:hover{color:var(--text);border-color:var(--line-strong);background:rgba(18,224,192,.08);}
.chip.is-active{
  background:var(--primary);
  border-color:var(--primary);
  color:#04231F;
  font-weight:600;
  box-shadow:0 10px 24px -14px rgba(18,224,192,.9);
}
.header-cta{flex:0 0 auto;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;
  border-radius:999px;
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  cursor:pointer;
  transition:all var(--t) var(--ease);
  text-align:center;
}
.btn-sm{padding:10px 20px;font-size:14px;}
.btn-primary{
  background:linear-gradient(135deg,#12E0C0,#7CF0D8);
  color:#04231F;
  box-shadow:0 10px 30px -8px rgba(18,224,192,.55);
}
.btn-primary:hover{color:#04231F;filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 16px 36px -10px rgba(18,224,192,.6);}
.btn-primary:active{transform:translateY(-1px);}
.btn-ghost{
  background:transparent;
  border-color:var(--primary);
  color:var(--primary);
}
.btn-ghost:hover{background:rgba(18,224,192,.08);color:var(--primary-soft);border-color:var(--primary-soft);}
.btn-ghost:active{transform:translateY(1px);}
.btn-block{width:100%;}
.link-more{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--primary);
  font-size:15px;
  font-weight:600;
  padding-bottom:2px;
  border-bottom:1px solid transparent;
  transition:all var(--t) var(--ease);
}
.link-more:hover{border-bottom-color:var(--primary);gap:10px;color:var(--primary-soft);}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  margin-left:auto;
  border:1px solid var(--line);
  border-radius:12px;
  background:transparent;
  cursor:pointer;
  padding:0;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;transition:all var(--t) var(--ease);}
.nav-backdrop{
  position:fixed;inset:0;background:rgba(4,8,15,.7);
  opacity:0;visibility:hidden;transition:opacity var(--t) var(--ease),visibility var(--t) var(--ease);
  z-index:70;
}
.nav-backdrop.is-open{opacity:1;visibility:visible;}

/* ---------- hero ---------- */
.page-hero{
  position:relative;
  padding:76px 0 84px;
  border-bottom:1px solid var(--line);
  background-image:linear-gradient(180deg,rgba(7,13,24,.72),rgba(7,13,24,.94)),url('/assets/images/backpic/back-1.png');
  background-size:cover;
  background-position:center;
}
.page-hero::after{
  content:"";
  position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(18,224,192,.5),transparent);
}
.hero-grid{position:relative;z-index:2;row-gap:36px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.06em;
  color:var(--accent);
  text-transform:uppercase;
  margin-bottom:16px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--accent);opacity:.7;}
.hero-title{
  font-size:clamp(30px,4.6vw,54px);
  line-height:1.2;
  font-weight:700;
  margin-bottom:16px;
}
.hero-lead{
  font-size:17px;
  line-height:1.85;
  color:var(--text-2);
  max-width:640px;
  margin-bottom:24px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:28px;}
.hero-stats{display:flex;flex-wrap:wrap;gap:12px;}
.stat{
  min-width:150px;
  padding:14px 18px;
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  background:var(--bg-2);
}
.stat-num{display:block;font-size:22px;color:var(--primary);font-variant-numeric:tabular-nums;font-weight:700;letter-spacing:.02em;}
.stat-label{font-size:13px;color:var(--text-3);}
.glass-card{
  background:var(--panel);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:26px;
  box-shadow:var(--shadow-1);
}
.glass-card h2{font-size:17px;margin-bottom:16px;display:flex;align-items:center;gap:10px;}
.badge{
  display:inline-flex;align-items:center;
  padding:5px 12px;
  border-radius:999px;
  font-size:12px;
  letter-spacing:.06em;
  background:rgba(18,224,192,.12);
  color:var(--primary);
  border:1px solid rgba(18,224,192,.24);
}
.badge-accent{background:rgba(216,255,79,.12);color:var(--accent);border-color:rgba(216,255,79,.28);}
.badge-warn{background:rgba(255,90,54,.12);color:var(--warn);border-color:rgba(255,90,54,.28);}
.mini-list li{
  display:flex;align-items:flex-start;justify-content:space-between;gap:16px;
  padding:12px 0;
  border-bottom:1px dashed rgba(255,255,255,.09);
  font-size:15px;
}
.mini-list li:last-child{border-bottom:none;padding-bottom:0;}
.mini-list .k{color:var(--text-2);}
.mini-list .v{color:var(--text);font-weight:600;text-align:right;}

/* ---------- sections ---------- */
.section{padding:var(--sec) 0;}
.section-alt{background:var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.section-head{max-width:760px;margin-bottom:38px;}
.section-head h2{font-size:clamp(24px,3vw,36px);line-height:1.3;margin-bottom:14px;}
.section-head p{color:var(--text-2);font-size:16px;}
.section-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:38px;}
.section-head-row .section-head{margin-bottom:0;}

/* ---------- compare rows ---------- */
.compare-list{display:flex;flex-direction:column;gap:12px;}
.compare-row{
  display:grid;
  grid-template-columns:290px 1fr;
  gap:28px;
  align-items:start;
  padding:22px 24px;
  background:var(--bg-2);
  border:1px solid var(--line);
  border-radius:var(--radius);
  transition:border-color var(--t) var(--ease),transform var(--t) var(--ease),box-shadow var(--t) var(--ease),background var(--t) var(--ease);
}
.compare-row:hover{
  border-color:var(--line-strong);
  transform:translateY(-2px);
  box-shadow:var(--shadow-2);
  background:#0D1A2C;
}
.compare-label{display:flex;align-items:baseline;gap:12px;}
.compare-label .idx{font-size:14px;color:var(--accent);font-variant-numeric:tabular-nums;font-weight:700;letter-spacing:.06em;flex:0 0 auto;}
.compare-label .label-text{font-size:18px;font-weight:700;color:var(--text);}
.compare-body h3{font-size:16px;margin-bottom:6px;}
.compare-body p{font-size:15px;color:var(--text-2);margin-bottom:0;}
.compare-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px;}

/* ---------- split feature ---------- */
.split{display:grid;grid-template-columns:5fr 7fr;gap:44px;align-items:center;}
.media{
  position:relative;
  overflow:hidden;
  border-radius:var(--radius);
  border:1px solid var(--line);
  background:linear-gradient(135deg,rgba(18,224,192,.22),var(--bg-2) 70%);
  aspect-ratio:16/10;
  box-shadow:var(--shadow-1);
}
.media::before{
  content:attr(data-watermark);
  position:absolute;inset:0;
  display:flex;align-items:center;justify-content:center;
  font-size:72px;font-weight:700;color:rgba(18,224,192,.16);
}
.media img{
  position:relative;z-index:1;
  width:100%;height:100%;object-fit:cover;
  transition:transform 400ms var(--ease);
}
.media img.is-broken{display:none;}
.media:hover img{transform:scale(1.04);}
.media-caption{margin-top:12px;font-size:13px;color:var(--text-3);}
.info-list{display:grid;grid-template-columns:repeat(2,1fr);gap:14px 26px;margin-top:24px;}
.info-list li{display:flex;gap:10px;font-size:15px;color:var(--text-2);line-height:1.7;}
.info-list li::before{
  content:"";flex:0 0 6px;width:6px;height:6px;margin-top:10px;border-radius:50%;
  background:var(--primary);
}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.step{
  position:relative;
  padding:24px 22px;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:linear-gradient(160deg,#0C1728,rgba(11,21,36,.5));
  transition:border-color var(--t) var(--ease),transform var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.step::before{
  content:"";position:absolute;left:22px;right:22px;top:0;height:2px;
  background:linear-gradient(90deg,var(--primary),transparent);
  opacity:.5;
}
.step:hover{border-color:var(--line-strong);transform:translateY(-4px);box-shadow:var(--shadow-2);}
.step-num{font-size:14px;font-weight:700;letter-spacing:.06em;color:var(--accent);font-variant-numeric:tabular-nums;}
.step h3{font-size:18px;margin:10px 0 8px;}
.step p{font-size:14px;color:var(--text-2);line-height:1.75;margin-bottom:0;}

/* ---------- faq ---------- */
.faq-wrap{display:grid;grid-template-columns:4fr 8fr;gap:44px;align-items:start;}
.accordion{background:transparent;border:none;margin:0;padding:0;list-style:none;}
.accordion-item{
  position:relative;
  background:var(--bg-2);
  border:1px solid var(--line);
  border-radius:14px;
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color var(--t) var(--ease);
}
.accordion-item:hover{border-color:var(--line-strong);}
.accordion-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:2px;
  background:transparent;transition:background var(--t) var(--ease);
}
.accordion-item.is-open::before,.accordion-item.is-active::before{background:var(--primary);}
.accordion-title{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  min-height:56px;
  padding:16px 22px;
  font-size:17px;
  font-weight:600;
  color:var(--text);
  text-decoration:none;
  border:none;
  background:transparent;
}
.accordion-title:hover{color:var(--primary-soft);text-decoration:none;}
.accordion-title:focus{outline:none;}
.faq-icon{position:relative;flex:0 0 20px;width:20px;height:20px;}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--primary);border-radius:2px;
  transition:transform var(--t) var(--ease),opacity var(--t) var(--ease);
}
.faq-icon::before{left:2px;right:2px;top:9px;height:2px;}
.faq-icon::after{top:2px;bottom:2px;left:9px;width:2px;}
.accordion-item.is-open .faq-icon::after,.accordion-item.is-active .faq-icon::after{transform:scaleY(0);opacity:0;}
.accordion-content{display:none;padding:0 22px 22px 20px;}
.accordion-item.is-open .accordion-content,.accordion-item.is-active .accordion-content{display:block;}
.accordion-content p{font-size:15px;color:var(--text-2);line-height:1.85;margin-bottom:0;}

/* ---------- cta ---------- */
.cta-section{
  position:relative;
  padding:var(--sec) 0;
  background-image:linear-gradient(180deg,rgba(7,13,24,.9),rgba(7,13,24,.96)),url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
}
.cta-panel{
  display:grid;
  grid-template-columns:1.1fr .9fr;
  gap:40px;
  align-items:center;
  padding:42px;
  border-radius:20px;
  border:1px solid var(--line);
  background:var(--panel);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow-1);
}
.cta-panel h2{font-size:clamp(22px,2.6vw,32px);margin-bottom:12px;}
.cta-panel p{color:var(--text-2);font-size:15px;}
.cta-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px;}
.form-field{margin-bottom:14px;}
.form-field label{display:block;font-size:13px;color:var(--text-2);margin-bottom:8px;}
.form-field input{
  width:100%;
  padding:14px 16px;
  border-radius:12px;
  border:1px solid var(--line);
  background:var(--panel);
  color:var(--text);
  font-size:15px;
  transition:border-color var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.form-field input::placeholder{color:var(--text-3);}
.form-field input:focus{
  outline:none;
  border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(18,224,192,.15);
}
.form-tip{font-size:13px;color:var(--warn);min-height:18px;margin:6px 0 12px;}
.form-tip.is-ok{color:var(--primary);}

/* ---------- footer ---------- */
.site-footer{
  padding:64px 0 28px;
  background:var(--bg-2);
  border-top:1px solid var(--line);
}
.footer-grid{row-gap:32px;}
.footer-col .brand{margin-bottom:14px;}
.footer-col p{font-size:14px;color:var(--text-2);line-height:1.8;max-width:280px;}
.footer-col h4{font-size:15px;color:var(--text);margin-bottom:16px;letter-spacing:.02em;}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul li a{font-size:14px;color:var(--text-2);}
.footer-col ul li a:hover{color:var(--primary);}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  margin-top:44px;padding-top:22px;
  border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 480ms var(--ease),transform 480ms var(--ease);}
.reveal.is-in{opacity:1;transform:none;}

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

/* ---------- responsive ---------- */
@media (max-width:1024px){
  :root{--sec:64px;--gap:20px;}
  .chip-nav{
    position:fixed;
    top:0;right:0;bottom:0;
    width:min(320px,86vw);
    margin:0;
    padding:88px 20px 32px;
    flex-direction:column;
    align-items:stretch;
    flex-wrap:nowrap;
    gap:10px;
    background:var(--bg-2);
    border-left:1px solid var(--line);
    transform:translateX(102%);
    transition:transform var(--t) var(--ease);
    z-index:75;
    overflow-y:auto;
  }
  .chip-nav.is-open{transform:translateX(0);}
  .chip{justify-content:center;padding:14px 18px;font-size:16px;}
  .nav-toggle{display:flex;}
  .header-cta{display:none;}
  .split,.faq-wrap,.cta-panel{grid-template-columns:1fr;gap:28px;}
  .steps{grid-template-columns:repeat(2,1fr);}
  .compare-row{grid-template-columns:1fr;gap:12px;}
}
@media (max-width:768px){
  .container{padding:0 16px;}
  .steps{grid-template-columns:1fr;}
  .info-list{grid-template-columns:1fr;}
  .page-hero{padding:56px 0 60px;}
  .hero-lead{font-size:16px;}
  .cta-panel{padding:28px 22px;}
  .glass-card{padding:22px;}
  .stat{flex:1 1 100%;}
}
@media (max-width:520px){
  .brand-text{font-size:17px;}
  .hero-title{font-size:28px;}
  .btn{padding:12px 20px;font-size:15px;}
  .hero-actions .btn{width:100%;}
  .section{padding:48px 0;}
  .cta-section{padding:48px 0;}
  .footer-bottom{flex-direction:column;}
}