/* roulang page: index */
/* ============ 设计变量 ============ */
:root{
  --ink-900:#070C16;
  --ink-800:#0C1424;
  --ink-700:#121C30;
  --line:rgba(255,255,255,.10);
  --line-strong:rgba(255,255,255,.18);
  --primary:#17E0A8;
  --primary-700:#0FA87E;
  --accent:#FF9F1C;
  --text:#E8EEF6;
  --text-dim:#93A3B8;
  --warn:#FF5C5C;
  --glass:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  --r-card:16px;
  --r-glass:18px;
  --r-btn:12px;
  --r-pill:999px;
  --r-input:10px;
  --sh-card:0 10px 30px rgba(0,0,0,.35);
  --sh-hover:0 16px 40px rgba(0,0,0,.45);
  --ease:200ms ease;
  --container:1200px;
  --nav-h:72px;
  --sp-1:4px;--sp-2:8px;--sp-3:12px;--sp-4:16px;--sp-5:24px;--sp-6:32px;--sp-7:48px;--sp-8:64px;--sp-9:96px;
}
@media (min-width:1441px){:root{--container:1280px}}

/* ============ 基础重置 ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:'HarmonyOS Sans SC','PingFang SC','Microsoft YaHei',system-ui,-apple-system,'Segoe UI',sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--ink-900);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4,h5,h6,p,ul,ol,li,figure,dl,dd,blockquote{margin:0;padding:0;font-family:inherit;color:inherit}
ul,ol{list-style:none}
a{color:inherit;text-decoration:none;transition:color var(--ease),border-color var(--ease),background-color var(--ease)}
a:hover,a:focus{color:var(--primary)}
img{max-width:100%;height:auto;display:block;border:0}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;margin:0}
button{cursor:pointer;background:none;border:0}
h1{font-size:clamp(30px,4.4vw,52px);line-height:1.2;font-weight:800;letter-spacing:-.5px}
h2{font-size:clamp(24px,2.6vw,34px);line-height:1.3;font-weight:700}
h3{font-size:20px;line-height:1.5;font-weight:600}
p{font-size:16px;line-height:1.85}
::selection{background:rgba(23,224,168,.28);color:#fff}
:focus-visible{outline:3px solid rgba(23,224,168,.55);outline-offset:2px;border-radius:6px}

/* ============ 容器与板块 ============ */
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px}
.section{padding:88px 0;position:relative}
.section-alt{background:var(--ink-800)}
.section-head{margin-bottom:48px;max-width:820px}
.section-num{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:2px;font-weight:700;color:var(--primary);
  text-transform:none;
}
.section-num::before{content:"";width:18px;height:1px;background:var(--primary);display:inline-block}
.section-head h2{margin:12px 0 14px;padding-left:14px;border-left:3px solid var(--primary);border-radius:2px}
.section-desc{color:var(--text-dim);font-size:16px;max-width:760px}
.divider{height:1px;background:var(--line);position:relative;margin:0}
.divider::after{
  content:"";position:absolute;left:50%;top:-3px;transform:translateX(-50%);
  width:64px;height:7px;
  background:linear-gradient(90deg,transparent,rgba(23,224,168,.65),transparent);
}

/* ============ 按钮体系 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1.2;
  border:1px solid transparent;cursor:pointer;
  transition:transform var(--ease),box-shadow var(--ease),background-color var(--ease),color var(--ease),border-color var(--ease);
  white-space:nowrap;min-height:46px;
}
.btn i{font-size:13px;transition:transform var(--ease)}
.btn-primary{background:var(--primary);color:#04231A;box-shadow:0 8px 26px rgba(23,224,168,.28)}
.btn-primary:hover{background:#22F2B8;color:#04231A;transform:translateY(-2px);box-shadow:0 12px 32px rgba(23,224,168,.38)}
.btn-primary:active{transform:translateY(0);box-shadow:0 4px 14px rgba(23,224,168,.24)}
.btn-outline{background:transparent;color:var(--text);border-color:var(--line-strong)}
.btn-outline:hover{background:rgba(23,224,168,.10);border-color:var(--primary);color:var(--primary);transform:translateY(-2px)}
.btn-ghost{background:transparent;color:var(--text-dim);padding:13px 10px;border-color:transparent;position:relative}
.btn-ghost::after{content:"";position:absolute;left:50%;bottom:6px;width:0;height:1px;background:var(--primary);transform:translateX(-50%);transition:width var(--ease)}
.btn-ghost:hover{color:var(--primary);transform:translateY(-2px)}
.btn-ghost:hover::after{width:70%}
.btn-cta{background:var(--accent);color:#2A1500;box-shadow:0 0 0 1px rgba(23,224,168,.55),0 10px 30px rgba(255,159,28,.28)}
.btn-cta:hover{background:#FFB345;color:#2A1500;transform:translateY(-2px);box-shadow:0 0 0 1px rgba(23,224,168,.75),0 14px 36px rgba(255,159,28,.34)}
.btn-lg{padding:16px 34px;font-size:16px;min-height:54px}
.btn-block{width:100%}
.btn:disabled,.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}

/* ============ 标签 / 徽章 ============ */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:7px 15px;border-radius:var(--r-pill);
  border:1px solid rgba(23,224,168,.40);background:rgba(23,224,168,.06);
  color:var(--primary);font-size:13px;font-weight:500;line-height:1;
}
.tag-plain{border-color:var(--line);background:rgba(255,255,255,.03);color:var(--text-dim)}
.badge{
  display:inline-flex;align-items:center;
  padding:5px 12px;border-radius:var(--r-pill);
  background:rgba(23,224,168,.12);border:1px solid rgba(23,224,168,.28);
  color:var(--primary);font-size:12px;font-weight:600;line-height:1.4;
}
.badge-accent{background:rgba(255,159,28,.12);border-color:rgba(255,159,28,.34);color:var(--accent)}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;height:var(--nav-h);
  background:linear-gradient(160deg,rgba(12,20,36,.82),rgba(7,12,22,.72));
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
  transition:background-color var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.site-header.is-scrolled{background:rgba(7,12,22,.94);border-bottom-color:rgba(23,224,168,.35);box-shadow:0 1px 0 rgba(23,224,168,.20),0 10px 30px rgba(0,0,0,.45)}
.header-inner{height:var(--nav-h);display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:inline-flex;align-items:center;gap:12px;flex-shrink:0}
.brand-mark{
  width:42px;height:42px;border-radius:13px;display:grid;place-items:center;
  background:linear-gradient(150deg,rgba(23,224,168,.22),rgba(15,168,126,.10));
  border:1px solid rgba(23,224,168,.42);color:var(--primary);font-size:17px;
  box-shadow:0 6px 18px rgba(23,224,168,.16);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:17px;font-weight:800;color:var(--text);letter-spacing:.5px}
.brand-text em{font-style:normal;font-size:11px;color:var(--text-dim);letter-spacing:1px}
.main-nav{display:flex;align-items:center;gap:4px}
.nav-link{
  position:relative;padding:10px 14px;border-radius:10px;
  font-size:15px;color:var(--text-dim);font-weight:500;white-space:nowrap;
  transition:color var(--ease),background-color var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:4px;width:0;height:2px;border-radius:2px;
  background:var(--primary);transform:translateX(-50%);transition:width var(--ease);
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.04)}
.nav-link:hover::after{width:26px}
.nav-link.is-active{color:var(--primary)}
.nav-link.is-active::after{width:26px;box-shadow:0 0 10px rgba(23,224,168,.7)}
.header-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:rgba(255,255,255,.03);
  color:var(--text);font-size:17px;place-items:center;
}

/* ============ 首屏 Hero ============ */
.hero{position:relative;overflow:hidden;padding:78px 0 88px;min-height:82vh;display:flex;align-items:center}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  opacity:.30;filter:saturate(.85);
}
.hero-mask{
  position:absolute;inset:0;
  background:
    radial-gradient(900px 460px at 78% 16%,rgba(23,224,168,.20),transparent 62%),
    radial-gradient(760px 400px at 8% 92%,rgba(255,159,28,.10),transparent 68%),
    linear-gradient(180deg,rgba(7,12,22,.70) 0%,rgba(7,12,22,.92) 62%,var(--ink-900) 100%);
}
.hero-grid-lines{
  position:absolute;inset:0;opacity:.28;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(circle at 60% 30%,#000 0%,transparent 72%);
  -webkit-mask-image:radial-gradient(circle at 60% 30%,#000 0%,transparent 72%);
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center;width:100%}
.hero-eyebrow{display:inline-flex;align-items:center;gap:10px;margin-bottom:20px;font-size:13px;color:var(--primary);letter-spacing:1px}
.hero-eyebrow .dot{width:8px;height:8px;border-radius:50%;background:var(--primary);box-shadow:0 0 12px rgba(23,224,168,.9);animation:pulse 2.2s infinite}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.55;transform:scale(.82)}}
.hero h1{margin-bottom:20px;max-width:15em}
.hero h1 span{color:var(--primary)}
.hero-sub{font-size:17px;color:var(--text-dim);max-width:34em;margin-bottom:30px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:28px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px}

.hero-card{
  border-radius:var(--r-glass);padding:28px;
  background:var(--glass);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border:1px solid rgba(255,255,255,.12);
  box-shadow:var(--sh-card),inset 0 1px 0 rgba(255,255,255,.16);
  animation:floatCard 6s ease-in-out infinite;
}
@keyframes floatCard{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}
.hero-card-top{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:16px;border-bottom:1px solid var(--line)}
.hero-card-top h2{font-size:16px;font-weight:700;letter-spacing:.4px}
.status-live{display:inline-flex;align-items:center;gap:7px;font-size:12px;color:var(--primary)}
.status-live i{width:8px;height:8px;border-radius:50%;background:var(--primary);box-shadow:0 0 10px rgba(23,224,168,.9);display:inline-block}
.step-list{margin-top:8px}
.step-list li{display:flex;gap:14px;padding:16px 0;border-bottom:1px dashed rgba(255,255,255,.08)}
.step-list li:last-child{border-bottom:0;padding-bottom:4px}
.step-idx{
  flex:0 0 34px;width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  font-size:14px;font-weight:800;color:var(--primary);
  background:rgba(23,224,168,.10);border:1px solid rgba(23,224,168,.30);
}
.step-list h3{font-size:15px;font-weight:600;margin-bottom:2px}
.step-list p{font-size:13.5px;color:var(--text-dim);line-height:1.7}

/* ============ 入口指引 非对称栅格 ============ */
.guide-grid{display:grid;grid-template-columns:1.35fr 1fr;grid-template-rows:auto auto;gap:24px}
.guide-card{
  background:var(--ink-700);border:1px solid var(--line);border-radius:var(--r-card);
  padding:30px;position:relative;overflow:hidden;
  box-shadow:var(--sh-card);transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.guide-card::before{content:"";position:absolute;left:0;right:0;top:0;height:1px;background:linear-gradient(90deg,transparent,rgba(255,255,255,.24),transparent)}
.guide-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:rgba(23,224,168,.42)}
.guide-main{grid-row:span 2;display:flex;flex-direction:column;justify-content:space-between;gap:26px}
.guide-card h3{margin:14px 0 10px}
.guide-card p{color:var(--text-dim);font-size:15px}
.guide-figure{margin-top:22px;border-radius:12px;overflow:hidden;position:relative;border:1px solid var(--line)}
.guide-figure img{width:100%;aspect-ratio:16/9;object-fit:cover;filter:brightness(.8)}
.guide-list{margin-top:16px;display:flex;flex-direction:column;gap:10px}
.guide-list li{display:flex;gap:10px;font-size:14.5px;color:var(--text-dim);align-items:flex-start}
.guide-list li i{color:var(--primary);font-size:12px;margin-top:8px}

/* ============ 数据条带 ============ */
.stat-strip{
  display:grid;grid-template-columns:repeat(4,1fr);
  border-radius:var(--r-glass);overflow:hidden;
  background:var(--glass);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border:1px solid rgba(255,255,255,.12);
}
.stat-item{padding:34px 24px;text-align:center;position:relative}
.stat-item + .stat-item::before{content:"";position:absolute;left:0;top:22%;height:56%;width:1px;background:linear-gradient(180deg,transparent,rgba(23,224,168,.45),transparent)}
.stat-num{font-size:clamp(30px,4vw,46px);font-weight:800;line-height:1;color:var(--accent);letter-spacing:-1px}
.stat-num small{font-size:15px;font-weight:700;margin-left:4px;color:var(--text-dim);letter-spacing:0}
.stat-label{margin-top:12px;font-size:14px;color:var(--text-dim)}
.stat-link{margin-top:26px;display:inline-flex;align-items:center;gap:8px;color:var(--primary);font-size:15px;font-weight:600}
.stat-link i{transition:transform var(--ease)}
.stat-link:hover i{transform:translateX(4px)}

/* ============ 场景 交错图文 ============ */
.case-row{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;margin-bottom:72px}
.case-row:last-child{margin-bottom:0}
.case-row.reverse .case-media{order:2}
.case-media{position:relative;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh-card)}
.case-media img{width:100%;aspect-ratio:16/9;object-fit:cover;filter:brightness(.78);transition:transform 420ms ease}
.case-media:hover img{transform:scale(1.04)}
.case-index{
  position:absolute;left:18px;top:18px;z-index:2;
  padding:6px 14px;border-radius:var(--r-pill);
  background:rgba(7,12,22,.72);border:1px solid rgba(23,224,168,.42);
  color:var(--primary);font-size:12px;font-weight:700;letter-spacing:1px;
  backdrop-filter:blur(8px);
}
.case-body h3{margin:12px 0 14px}
.case-body p{color:var(--text-dim);font-size:15.5px}
.case-points{margin-top:20px;display:flex;flex-direction:column;gap:12px}
.case-points li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--text)}
.case-points li i{color:var(--primary);font-size:13px;margin-top:8px}

/* ============ 登录方式对比 ============ */
.plan-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch}
.plan-card{
  position:relative;display:flex;flex-direction:column;
  background:var(--ink-700);border:1px solid var(--line);border-radius:var(--r-card);
  padding:32px 28px;box-shadow:var(--sh-card);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.plan-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:rgba(23,224,168,.40)}
.plan-card.is-featured{
  border:2px solid var(--primary);
  background:linear-gradient(160deg,rgba(23,224,168,.10),rgba(255,255,255,.02));
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  box-shadow:0 0 0 1px rgba(23,224,168,.18),0 18px 46px rgba(23,224,168,.18);
  transform:translateY(-8px);
}
.plan-flag{
  position:absolute;top:-13px;left:50%;transform:translateX(-50%);
  padding:5px 18px;border-radius:var(--r-pill);
  background:var(--accent);color:#2A1500;font-size:12px;font-weight:800;letter-spacing:1px;
  box-shadow:0 8px 20px rgba(255,159,28,.32);
}
.plan-card h3{font-size:18px;margin-bottom:6px}
.plan-desc{font-size:14px;color:var(--text-dim);min-height:44px}
.plan-price{margin:22px 0 8px;font-size:32px;font-weight:800;color:var(--primary);line-height:1;letter-spacing:-1px}
.plan-price span{font-size:14px;font-weight:500;color:var(--text-dim);letter-spacing:0;margin-left:6px}
.plan-hr{height:1px;background:var(--line);margin:20px 0}
.plan-feats{display:flex;flex-direction:column;gap:12px;margin-bottom:26px;flex:1}
.plan-feats li{display:flex;gap:10px;font-size:14.5px;color:var(--text-dim);align-items:flex-start;line-height:1.7}
.plan-feats li i{color:var(--primary);font-size:12px;margin-top:8px}

/* ============ 资讯列表 ============ */
#cms-news-list{display:flex;flex-wrap:wrap;gap:24px;margin:0}
#cms-news-list > .cell{flex:1 1 100%;max-width:100%;min-width:0;padding:0;margin:0}
@media (min-width:640px){#cms-news-list > .cell{flex:1 1 calc(50% - 12px);max-width:calc(50% - 12px)}}
@media (min-width:1024px){#cms-news-list > .cell{flex:1 1 calc(33.333% - 16px);max-width:calc(33.333% - 16px)}}
.news-card{
  height:100%;display:flex;flex-direction:column;
  background:var(--ink-700);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--sh-card);position:relative;
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.news-card::before{content:"";position:absolute;left:0;right:0;top:0;height:1px;background:linear-gradient(90deg,transparent,rgba(255,255,255,.22),transparent);z-index:2}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:rgba(23,224,168,.46)}
.news-thumb{display:block;overflow:hidden;position:relative;background:var(--ink-800)}
.news-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;filter:brightness(.8);transition:transform 420ms ease}
.news-card:hover .news-thumb img{transform:scale(1.05)}
.news-body{padding:22px 22px 20px;display:flex;flex-direction:column;flex:1;gap:12px}
.news-title{font-size:17px;line-height:1.55;font-weight:600;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-title a:hover{color:var(--primary)}
.news-summary{font-size:14px;color:var(--text-dim);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;flex:1}
.news-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:14px;border-top:1px solid var(--line);font-size:13px;color:var(--text-dim)}
.news-more{display:inline-flex;align-items:center;gap:7px;color:var(--primary);font-weight:600}
.news-more i{transition:transform var(--ease)}
.news-more:hover i{transform:translateX(4px)}
.news-cta{margin-top:44px;text-align:center}
.empty-state{
  border:1px dashed var(--line-strong);border-radius:var(--r-card);
  padding:60px 24px;text-align:center;background:rgba(255,255,255,.02);
}
.empty-state i{font-size:34px;color:var(--text-dim);opacity:.6}
.empty-state p{margin:16px 0 22px;color:var(--text-dim);font-size:15px}

/* ============ FAQ ============ */
.faq-wrap{max-width:960px;margin:0 auto}
.accordion{border:0;background:transparent;margin:0;list-style:none}
.accordion .accordion-item{
  border:1px solid var(--line);border-radius:var(--r-pill);background:rgba(18,28,48,.72);
  margin-bottom:14px;overflow:hidden;position:relative;
  transition:border-radius 260ms ease,border-color var(--ease),background-color var(--ease),box-shadow var(--ease);
}
.accordion .accordion-item:hover{border-color:rgba(23,224,168,.34)}
.accordion .accordion-item.is-active{
  border-radius:22px;border-color:rgba(23,224,168,.42);
  background:linear-gradient(160deg,rgba(23,224,168,.08),rgba(255,255,255,.02));
  box-shadow:0 14px 34px rgba(0,0,0,.38);
}
.accordion .accordion-item.is-active::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:3px;
  background:var(--primary);box-shadow:0 0 14px rgba(23,224,168,.8);
}
.accordion .accordion-title{
  display:block;position:relative;border:0;border-radius:inherit;background:transparent;
  padding:19px 62px 19px 26px;font-size:17px;font-weight:600;color:var(--text);line-height:1.6;
}
.accordion .accordion-title:hover,.accordion .accordion-title:focus{background:transparent;color:var(--primary)}
.accordion .accordion-title::before{
  content:"\f067";font-family:"Font Awesome 6 Free";font-weight:900;
  position:absolute;right:24px;top:50%;transform:translateY(-50%);
  font-size:13px;color:var(--primary);transition:transform 260ms ease,color var(--ease);
}
.accordion .accordion-item.is-active .accordion-title::before{content:"\f068";transform:translateY(-50%) rotate(180deg)}
.accordion .accordion-content{
  display:none;border:0;background:transparent;color:var(--text-dim);
  padding:0 26px 20px;font-size:15px;line-height:1.85;
}
.accordion .accordion-content p{font-size:15px;color:var(--text-dim)}

/* ============ 联系表单 ============ */
.contact-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:32px;align-items:start}
.form-panel,.info-panel{
  border-radius:var(--r-glass);padding:34px;
  border:1px solid var(--line);background:var(--ink-700);box-shadow:var(--sh-card);
}
.info-panel{background:var(--glass);backdrop-filter:blur(14px) saturate(140%);-webkit-backdrop-filter:blur(14px) saturate(140%);border-color:rgba(255,255,255,.12)}
.form-panel h3,.info-panel h3{margin-bottom:8px}
.form-hint{font-size:14px;color:var(--text-dim);margin-bottom:26px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{margin-bottom:18px;display:flex;flex-direction:column;gap:8px}
.field label{font-size:14px;color:var(--text-dim)}
.field label b{color:var(--warn);font-weight:400;margin-left:2px}
.field input,.field select,.field textarea{
  width:100%;height:auto;background:#0C1424;border:1px solid var(--line);
  border-radius:var(--r-input);padding:13px 16px;font-size:15px;line-height:1.5;
  color:var(--text);box-shadow:none;margin:0;
  transition:border-color var(--ease),box-shadow var(--ease),background-color var(--ease);
  appearance:none;-webkit-appearance:none;
}
.field textarea{min-height:118px;resize:vertical;line-height:1.7}
.field select{
  background-image:linear-gradient(45deg,transparent 50%,#93A3B8 50%),linear-gradient(135deg,#93A3B8 50%,transparent 50%);
  background-position:calc(100% - 20px) calc(50% + 1px),calc(100% - 14px) calc(50% + 1px);
  background-size:6px 6px,6px 6px;background-repeat:no-repeat;padding-right:44px;
}
.field input::placeholder,.field textarea::placeholder{color:rgba(147,163,184,.6)}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);background:#0A1220;
  box-shadow:0 0 0 4px rgba(23,224,168,.16);
}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-color:var(--warn);box-shadow:0 0 0 4px rgba(255,92,92,.12)}
.field .err{font-size:13px;color:var(--warn);display:none}
.field.has-error .err{display:block}
.check-row{display:flex;align-items:flex-start;gap:10px;margin:6px 0 22px;font-size:14px;color:var(--text-dim)}
.check-row input{width:18px;height:18px;accent-color:var(--primary);margin-top:5px;flex:0 0 18px}
.form-note{font-size:13px;color:var(--text-dim);margin-top:16px}
.form-msg{display:none;margin-top:16px;padding:12px 16px;border-radius:10px;font-size:14px;background:rgba(23,224,168,.10);border:1px solid rgba(23,224,168,.32);color:var(--primary)}
.form-msg.is-visible{display:block}
.info-list{margin-top:22px;display:flex;flex-direction:column;gap:18px}
.info-list li{display:flex;gap:14px;align-items:flex-start}
.info-icon{
  flex:0 0 40px;width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  background:rgba(23,224,168,.10);border:1px solid rgba(23,224,168,.30);color:var(--primary);font-size:15px;
}
.info-list strong{display:block;font-size:15px;font-weight:600;margin-bottom:4px}
.info-list span{font-size:14px;color:var(--text-dim);line-height:1.7}

/* ============ 页脚 ============ */
.site-footer{background:#050A12;position:relative;padding:72px 0 0;border-top:1px solid transparent}
.site-footer::before{content:"";position:absolute;left:0;right:0;top:0;height:1px;background:linear-gradient(90deg,transparent,rgba(23,224,168,.75),transparent)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:40px;padding-bottom:52px}
.footer-brand .brand{margin-bottom:18px}
.footer-brand p{font-size:14px;color:var(--text-dim);line-height:1.85;max-width:34em}
.footer-col h3{font-size:15px;font-weight:700;margin-bottom:20px;color:var(--text);position:relative;padding-left:12px}
.footer-col h3::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:3px;height:14px;border-radius:2px;background:var(--primary)}
.footer-links{display:flex;flex-direction:column;gap:12px}
.footer-links a{font-size:14px;color:var(--text-dim);display:inline-flex;align-items:center;gap:8px;transition:color var(--ease),transform var(--ease)}
.footer-links a:hover{color:var(--primary);transform:translateX(3px)}
.footer-info li{display:flex;gap:10px;font-size:14px;color:var(--text-dim);margin-bottom:14px;line-height:1.75}
.footer-info li i{color:var(--primary);margin-top:7px;font-size:13px}
.footer-bottom{
  border-top:1px solid var(--line);padding:22px 0;text-align:center;
  font-size:13px;color:rgba(147,163,184,.78);
}
.footer-bottom span{color:var(--text-dim)}

/* ============ 返回顶部 ============ */
.to-top{
  position:fixed;right:26px;bottom:26px;z-index:70;
  width:50px;height:50px;border-radius:50%;
  border:1px solid rgba(23,224,168,.55);background:rgba(7,12,22,.86);
  color:var(--primary);font-size:16px;display:grid;place-items:center;
  box-shadow:0 0 18px rgba(23,224,168,.22);backdrop-filter:blur(8px);
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity var(--ease),visibility var(--ease),transform var(--ease),background-color var(--ease);
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:rgba(23,224,168,.14);transform:translateY(-2px)}

/* ============ 响应式 ============ */
@media (max-width:1180px){
  .hero-inner{gap:36px}
  .nav-link{padding:10px 10px;font-size:14px}
}
@media (max-width:1024px){
  .container{padding:0 24px}
  .section{padding:64px 0}
  .hero{min-height:auto;padding:56px 0 64px}
  .hero-inner{grid-template-columns:1fr;gap:40px}
  .hero-card{max-width:560px}
  .guide-grid{grid-template-columns:1fr}
  .guide-main{grid-row:auto}
  .case-row{grid-template-columns:1fr;gap:28px;margin-bottom:56px}
  .case-row.reverse .case-media{order:0}
  .plan-grid{grid-template-columns:1fr;gap:20px}
  .plan-card.is-featured{transform:none}
  .contact-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .main-nav{
    position:fixed;left:0;right:0;top:var(--nav-h);z-index:65;
    flex-direction:column;align-items:stretch;gap:4px;
    background:rgba(7,12,22,.98);border-bottom:1px solid var(--line);
    padding:16px 24px 22px;transform:translateY(-12px);
    opacity:0;visibility:hidden;pointer-events:none;
    transition:opacity var(--ease),transform var(--ease),visibility var(--ease);
    max-height:calc(100vh - var(--nav-h));overflow-y:auto;
  }
  .main-nav.is-open{opacity:1;visibility:visible;transform:translateY(0);pointer-events:auto}
  .main-nav .nav-link{padding:15px 12px;font-size:16px;border-radius:12px;border-bottom:1px solid rgba(255,255,255,.06)}
  .main-nav .nav-link::after{display:none}
  .main-nav .nav-link.is-active{background:rgba(23,224,168,.08)}
  .nav-toggle{display:grid}
  .header-actions .btn-outline{display:none}
}
@media (max-width:640px){
  .container{padding:0 20px}
  .section{padding:56px 0}
  .section-head{margin-bottom:32px}
  h1{font-size:30px}
  .hero{padding:44px 0 56px}
  .hero-sub{font-size:16px}
  .hero-actions{gap:12px}
  .hero-actions .btn,.news-cta .btn,.form-panel .btn{width:100%}
  .hero-card{padding:22px}
  .stat-strip{grid-template-columns:1fr 1fr}
  .stat-item{padding:24px 16px}
  .stat-item:nth-child(3)::before,.stat-item:nth-child(1)::before{display:none}
  .stat-item:nth-child(3),.stat-item:nth-child(4){border-top:1px solid rgba(255,255,255,.08)}
  .form-row{grid-template-columns:1fr}
  .form-panel,.info-panel{padding:24px}
  .footer-grid{grid-template-columns:1fr;gap:30px;padding-bottom:36px}
  .brand-text em{font-size:10px;letter-spacing:.5px}
  .brand-text strong{font-size:15px}
  .brand-mark{width:38px;height:38px;border-radius:11px;font-size:15px}
  .to-top{right:16px;bottom:16px;width:46px;height:46px}
  .accordion .accordion-title{padding:16px 52px 16px 20px;font-size:15.5px}
  .accordion .accordion-content{padding:0 20px 18px}
}
@media (max-width:400px){
  .header-actions .btn-primary{padding:11px 16px;font-size:14px}
}

/* roulang page: article */
:root{
  --ink-900:#070C16;
  --ink-800:#0C1424;
  --ink-700:#121C30;
  --line:rgba(255,255,255,.10);
  --primary:#17E0A8;
  --primary-700:#0FA87E;
  --accent:#FF9F1C;
  --text:#E8EEF6;
  --text-dim:#93A3B8;
  --warn:#FF5C5C;
  --radius-card:16px;
  --radius-glass:18px;
  --radius-btn:12px;
  --radius-input:10px;
  --shadow-card:0 10px 30px rgba(0,0,0,.35);
  --shadow-hover:0 16px 40px rgba(0,0,0,.45);
  --glass:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  --container-w:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:'HarmonyOS Sans SC','PingFang SC','Microsoft YaHei',system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:
    radial-gradient(1000px 520px at 12% -6%,rgba(23,224,168,.13),transparent 62%),
    radial-gradient(760px 420px at 92% 4%,rgba(255,159,28,.08),transparent 60%),
    var(--ink-900);
  min-height:100vh;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--primary);text-decoration:none;transition:color .2s ease}
a:hover{color:#4BFFC8}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--text);line-height:1.3}
p{margin:0 0 16px}
ul,ol{margin:0 0 16px;padding-left:22px}
input,select,textarea{font-family:inherit;font-size:15px}
::selection{background:rgba(23,224,168,.32);color:#fff}
:focus-visible{outline:3px solid rgba(23,224,168,.75);outline-offset:2px}

.container{width:100%;max-width:var(--container-w);margin:0 auto;padding:0 32px}
@media (min-width:1441px){:root{--container-w:1280px}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(7,12,22,.74);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
  transition:background .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{
  background:rgba(7,12,22,.94);
  box-shadow:0 1px 0 rgba(23,224,168,.35),0 12px 28px rgba(0,0,0,.42);
}
.header-inner{display:flex;align-items:center;gap:24px;height:72px}
.brand{display:flex;align-items:center;gap:11px;text-decoration:none;flex-shrink:0}
.brand-mark{
  width:38px;height:38px;border-radius:11px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(150deg,var(--primary),var(--primary-700));
  color:#04140F;font-size:17px;box-shadow:0 8px 22px rgba(23,224,168,.30);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:17px;color:var(--text);font-weight:800;letter-spacing:.02em}
.brand-text em{font-style:normal;font-size:11px;color:var(--text-dim);letter-spacing:.14em}
.main-nav{display:flex;align-items:center;gap:26px;margin-left:auto}
.nav-link{position:relative;font-size:15px;color:var(--text-dim);padding:6px 0;white-space:nowrap}
.nav-link::after{
  content:"";position:absolute;left:50%;right:50%;bottom:0;height:2px;border-radius:2px;
  background:var(--primary);transition:left .22s ease,right .22s ease;
}
.nav-link:hover{color:var(--text)}
.nav-link:hover::after{left:0;right:0}
.nav-link.is-active{color:var(--primary)}
.nav-link.is-active::after{left:0;right:0}
.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:rgba(255,255,255,.04);color:var(--text);font-size:17px;cursor:pointer;
  align-items:center;justify-content:center;transition:all .2s ease;
}
.nav-toggle:hover{border-color:rgba(23,224,168,.5);color:var(--primary)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:999px;font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;text-decoration:none;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(0)}
.btn-primary{background:var(--primary);color:#04140F;box-shadow:0 8px 26px rgba(23,224,168,.28)}
.btn-primary:hover{color:#04140F;background:#2BEDB6;box-shadow:0 12px 30px rgba(23,224,168,.38)}
.btn-outline{background:transparent;color:var(--text);border-color:var(--line)}
.btn-outline:hover{background:rgba(23,224,168,.12);border-color:rgba(23,224,168,.55);color:var(--text)}
.btn-cta{background:var(--accent);color:#1B1102;box-shadow:0 10px 30px rgba(255,159,28,.30),0 0 0 1px rgba(23,224,168,.45)}
.btn-cta:hover{background:#FFB03F;color:#1B1102}
.btn-sm{padding:10px 18px;font-size:14px}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 13px;border-radius:999px;font-size:12.5px;font-weight:600;
  color:var(--primary);background:rgba(23,224,168,.10);border:1px solid rgba(23,224,168,.35);
}
.badge-accent{color:var(--accent);background:rgba(255,159,28,.10);border-color:rgba(255,159,28,.35)}

/* ---------- breadcrumb ---------- */
.crumb-bar{padding:26px 0 6px}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--text-dim)}
.breadcrumb a{color:var(--text-dim)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{opacity:.45}
.breadcrumb .current{color:var(--primary);max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- article head ---------- */
.article-head{padding:22px 0 34px;max-width:900px}
.article-head h1{
  font-size:clamp(28px,3.6vw,42px);font-weight:800;line-height:1.28;
  margin:18px 0 18px;letter-spacing:.01em;
}
.article-head .lead{
  font-size:16.5px;color:var(--text-dim);line-height:1.9;max-width:760px;margin-bottom:22px;
}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;font-size:13.5px;color:var(--text-dim)}
.meta-row span{display:inline-flex;align-items:center;gap:7px}
.meta-row i{color:var(--primary)}
.head-divider{
  height:1px;margin:8px 0 0;
  background:linear-gradient(90deg,rgba(23,224,168,.55),rgba(255,255,255,.06) 55%,transparent);
}

/* ---------- hero cover ---------- */
.article-cover{
  position:relative;margin:30px 0 0;border-radius:var(--radius-card);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow-card);
}
.article-cover img{width:100%;aspect-ratio:21/9;object-fit:cover;filter:brightness(.82)}
.article-cover::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,12,22,.10),rgba(7,12,22,.72));
}

/* ---------- layout ---------- */
.article-layout{display:flex;justify-content:center;padding:44px 0 0}
.article-shell{width:100%;max-width:800px}
.article-body{
  font-size:16.5px;line-height:1.9;color:#D8E2EF;
  background:var(--ink-700);
  border:1px solid var(--line);
  border-top:1px solid rgba(23,224,168,.30);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  padding:40px 44px;
}
.article-body > *:first-child{margin-top:0}
.article-body h2{
  font-size:clamp(21px,2.2vw,26px);font-weight:700;color:var(--text);
  margin:44px 0 16px;padding-left:14px;border-left:3px solid var(--primary);line-height:1.4;
}
.article-body h3{font-size:19px;font-weight:600;color:var(--text);margin:32px 0 12px}
.article-body h4{font-size:17px;font-weight:600;color:var(--text);margin:24px 0 10px}
.article-body p{margin:0 0 18px}
.article-body ul,.article-body ol{padding-left:24px;margin:0 0 20px}
.article-body li{margin-bottom:10px}
.article-body strong{color:#fff}
.article-body a{color:var(--primary);text-decoration:underline;text-underline-offset:3px}
.article-body blockquote{
  margin:26px 0;padding:18px 22px;background:var(--ink-800);
  border-left:3px solid var(--primary);border-radius:0 12px 12px 0;color:var(--text-dim);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:12px;margin:26px auto;box-shadow:var(--shadow-card);filter:brightness(.9)}
.article-body figure{margin:26px 0}
.article-body figcaption{font-size:13.5px;color:var(--text-dim);text-align:center;margin-top:10px}
.article-body table{display:block;width:100%;overflow-x:auto;border-collapse:collapse;font-size:14.5px;margin:22px 0}
.article-body th,.article-body td{border:1px solid var(--line);padding:11px 14px;text-align:left;white-space:nowrap}
.article-body th{background:var(--ink-800);color:var(--primary);font-weight:600}
.article-body code{background:var(--ink-800);border:1px solid var(--line);border-radius:6px;padding:2px 7px;font-size:14px;color:#8FF3D6}
.article-body hr{border:none;border-top:1px solid var(--line);margin:34px 0}

.empty-state{
  text-align:center;padding:56px 24px;border:1px dashed rgba(255,255,255,.18);
  border-radius:var(--radius-card);background:var(--ink-800);
}
.empty-state .empty-ico{
  width:64px;height:64px;margin:0 auto 18px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;font-size:24px;
  color:var(--primary);background:rgba(23,224,168,.10);border:1px solid rgba(23,224,168,.32);
}
.empty-state h3{font-size:19px;color:var(--text);margin-bottom:10px}
.empty-state p{color:var(--text-dim);font-size:15px;margin-bottom:22px}

.back-line{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:14px;padding:26px 0 8px}
.ghost-link{
  position:relative;display:inline-flex;align-items:center;gap:8px;color:var(--primary);font-size:15px;font-weight:600;
}
.ghost-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-4px;height:1px;background:var(--primary);
  transform:scaleX(0);transform-origin:center;transition:transform .25s ease;
}
.ghost-link:hover::after{transform:scaleX(1)}
.ghost-link i{transition:transform .2s ease}
.ghost-link:hover i{transform:translateX(4px)}

/* ---------- related ---------- */
.section{padding:76px 0 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:30px;flex-wrap:wrap}
.section-head h2{
  font-size:clamp(23px,2.5vw,32px);font-weight:700;padding-left:16px;position:relative;line-height:1.35;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--primary),rgba(23,224,168,.15));
}
.section-head p{color:var(--text-dim);font-size:15px;margin:0;max-width:520px}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.rel-card{
  display:flex;flex-direction:column;background:var(--ink-700);
  border:1px solid var(--line);border-top:1px solid rgba(255,255,255,.16);
  border-radius:var(--radius-card);box-shadow:var(--shadow-card);overflow:hidden;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(23,224,168,.55)}
.rel-thumb{position:relative;aspect-ratio:16/9;overflow:hidden}
.rel-thumb img{width:100%;height:100%;object-fit:cover;filter:brightness(.8);transition:transform .35s ease}
.rel-card:hover .rel-thumb img{transform:scale(1.05)}
.rel-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.rel-body h3{font-size:18px;font-weight:600;line-height:1.5}
.rel-body p{font-size:14.5px;color:var(--text-dim);margin:0;line-height:1.75}
.rel-foot{
  margin-top:auto;padding-top:12px;display:flex;align-items:center;justify-content:space-between;
  font-size:13.5px;color:var(--text-dim);border-top:1px solid var(--line);
}
.rel-foot i{color:var(--primary);transition:transform .2s ease}
.rel-card:hover .rel-foot i{transform:translateX(4px)}

/* ---------- cta band ---------- */
.cta-band{
  margin:76px 0 0;padding:44px 46px;border-radius:var(--radius-glass);
  background:var(--glass);border:1px solid rgba(23,224,168,.30);
  -webkit-backdrop-filter:blur(14px) saturate(140%);backdrop-filter:blur(14px) saturate(140%);
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(21px,2.3vw,28px);margin-bottom:10px}
.cta-band p{color:var(--text-dim);font-size:15px;margin:0;max-width:580px}
.cta-band .cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- footer ---------- */
.site-footer{
  margin-top:96px;padding:64px 0 0;position:relative;
  background:var(--ink-800);border-top:1px solid var(--line);
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(23,224,168,.85),transparent);
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:38px}
.footer-col h3{font-size:15px;font-weight:700;color:var(--text);margin-bottom:18px;letter-spacing:.04em}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{font-size:14px;color:var(--text-dim);line-height:1.85;max-width:420px}
.footer-links{display:flex;flex-direction:column;gap:11px}
.footer-links a{font-size:14.5px;color:var(--text-dim)}
.footer-links a:hover{color:var(--primary)}
.footer-info{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:13px}
.footer-info li{display:flex;gap:10px;font-size:14px;color:var(--text-dim);line-height:1.7}
.footer-info i{color:var(--primary);margin-top:5px}
.footer-bottom{
  margin-top:52px;padding:22px 0;border-top:1px solid var(--line);
  text-align:center;font-size:13.5px;color:var(--text-dim);
}

/* ---------- back to top ---------- */
.to-top{
  position:fixed;right:26px;bottom:26px;width:46px;height:46px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;cursor:pointer;
  background:rgba(7,12,22,.85);color:var(--primary);font-size:16px;
  border:1px solid rgba(23,224,168,.55);box-shadow:0 0 18px rgba(23,224,168,.28);
  opacity:0;visibility:hidden;transform:translateY(12px);transition:all .25s ease;z-index:70;
}
.to-top.is-visible{opacity:1;visibility:visible;transform:none}
.to-top:hover{background:rgba(23,224,168,.16)}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .container{padding:0 24px}
  .header-inner{height:64px;gap:16px}
  .main-nav{
    position:fixed;left:0;right:0;top:64px;flex-direction:column;align-items:stretch;gap:0;
    background:rgba(12,20,36,.98);border-bottom:1px solid var(--line);
    padding:14px 24px 104px;margin:0;
    transform:translateY(-14px);opacity:0;visibility:hidden;transition:all .24s ease;
    max-height:calc(100vh - 64px);overflow-y:auto;
  }
  .main-nav.is-open{transform:none;opacity:1;visibility:visible}
  .nav-link{padding:15px 0;border-bottom:1px solid var(--line);font-size:16px}
  .nav-link::after{display:none}
  .nav-toggle{display:flex}
  .header-actions .btn-outline{display:none}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .article-body{padding:32px 30px}
  .cta-band{padding:32px 28px}
}
@media (max-width:767px){
  .section{padding:56px 0 0}
  .article-head h1{font-size:clamp(26px,6.4vw,32px)}
  .grid-3{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .article-layout{padding-top:30px}
  .article-body{padding:26px 20px;font-size:16px;line-height:1.9}
  .breadcrumb .current{max-width:100%;white-space:normal}
  .cta-band .cta-actions{width:100%}
  .cta-band .btn{width:100%}
  .to-top{right:16px;bottom:16px}
}
@media (max-width:520px){
  .container{padding:0 20px}
  .brand-text em{display:none}
  .header-actions .btn-primary{padding:10px 16px;font-size:14px}
  .article-body{padding:22px 16px}
}

/* roulang page: category1 */
:root{
  --ink-900:#070C16;
  --ink-800:#0C1424;
  --ink-700:#121C30;
  --line:rgba(255,255,255,.10);
  --primary:#17E0A8;
  --primary-700:#0FA87E;
  --accent:#FF9F1C;
  --text:#E8EEF6;
  --text-dim:#93A3B8;
  --warn:#FF5C5C;
  --r-card:16px;
  --r-glass:18px;
  --r-btn:12px;
  --r-input:10px;
  --shadow-card:0 10px 30px rgba(0,0,0,.35);
  --shadow-hover:0 16px 40px rgba(0,0,0,.45);
  --t:200ms ease;
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--text);
  font-family:'HarmonyOS Sans SC','PingFang SC','Microsoft YaHei',system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:.2px;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  background:
    radial-gradient(700px 420px at 12% 8%, rgba(23,224,168,.10), transparent 62%),
    radial-gradient(620px 400px at 92% 22%, rgba(255,159,28,.07), transparent 65%);
  pointer-events:none;
  z-index:0;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--primary);text-decoration:none;transition:color var(--t),opacity var(--t);}
a:hover{color:var(--primary);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;font-weight:400;}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;background:none;border:0;}
:focus-visible{outline:3px solid rgba(23,224,168,.55);outline-offset:2px;border-radius:6px;}
::selection{background:rgba(23,224,168,.28);}

/* ---------- layout ---------- */
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 32px;
  position:relative;
  z-index:1;
}
main{position:relative;z-index:1;}
.section{padding:88px 0;}
.section--tight{padding:64px 0;}

/* ---------- section head ---------- */
.sec-head{max-width:760px;margin-bottom:48px;}
.sec-tag{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:2px;color:var(--primary);
  text-transform:uppercase;margin-bottom:14px;
}
.sec-tag::before{content:"";width:22px;height:1px;background:var(--primary);opacity:.7;}
.sec-title{
  font-size:clamp(24px,2.6vw,34px);
  line-height:1.3;
  font-weight:700;
  padding-left:16px;
  border-left:3px solid var(--primary);
  margin-bottom:16px;
}
.sec-title .num{
  display:block;
  font-size:13px;
  font-weight:600;
  letter-spacing:3px;
  color:var(--text-dim);
  margin-bottom:8px;
}
.sec-desc{color:var(--text-dim);font-size:16px;max-width:640px;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
  transition:background var(--t),box-shadow var(--t),border-color var(--t);
}
.site-header.is-scrolled{
  background:rgba(9,15,26,.92);
  border-bottom-color:rgba(23,224,168,.32);
  box-shadow:0 8px 30px rgba(0,0,0,.45);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:20px;height:72px;
}
.brand{display:flex;align-items:center;gap:12px;color:var(--text);}
.brand:hover{color:var(--text);}
.brand-mark{
  width:40px;height:40px;flex:0 0 40px;border-radius:12px;
  display:grid;place-items:center;
  background:linear-gradient(150deg,rgba(23,224,168,.24),rgba(23,224,168,.06));
  border:1px solid rgba(23,224,168,.42);
  color:var(--primary);font-size:17px;
  box-shadow:0 0 18px rgba(23,224,168,.18);
}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-text strong{font-size:17px;font-weight:800;letter-spacing:1px;}
.brand-text em{font-size:12px;font-style:normal;color:var(--text-dim);letter-spacing:1px;}

.main-nav{display:flex;align-items:center;gap:2px;}
.nav-link{
  position:relative;
  padding:10px 14px;
  font-size:15px;
  color:var(--text-dim);
  border-radius:10px;
  white-space:nowrap;
  transition:color var(--t),background var(--t);
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:4px;
  width:0;height:2px;border-radius:2px;
  background:var(--primary);
  transform:translateX(-50%);
  transition:width var(--t);
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.04);}
.nav-link:hover::after{width:44%;}
.nav-link.is-active{color:var(--primary);}
.nav-link.is-active::after{width:44%;box-shadow:0 0 10px rgba(23,224,168,.7);}

.header-actions{display:flex;align-items:center;gap:10px;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 20px;
  border-radius:var(--r-btn);
  font-size:15px;font-weight:600;
  border:1px solid transparent;
  transition:transform var(--t),box-shadow var(--t),background var(--t),border-color var(--t),color var(--t);
  min-height:44px;
  white-space:nowrap;
}
.btn:hover{transform:translateY(-2px);}
.btn:active{transform:translateY(0);}
.btn-primary{
  background:var(--primary);
  color:#04241A;
  box-shadow:0 8px 26px rgba(23,224,168,.28);
}
.btn-primary:hover{background:#2BF0B9;color:#04241A;box-shadow:0 12px 32px rgba(23,224,168,.38);}
.btn-outline{
  background:transparent;
  border-color:rgba(255,255,255,.18);
  color:var(--text);
}
.btn-outline:hover{background:rgba(23,224,168,.10);border-color:rgba(23,224,168,.55);color:var(--text);}
.btn-accent{
  background:var(--accent);
  color:#2A1500;
  box-shadow:0 8px 26px rgba(255,159,28,.28),0 0 0 1px rgba(23,224,168,.35);
}
.btn-accent:hover{background:#FFB44A;color:#2A1500;}
.btn-lg{padding:15px 30px;border-radius:999px;font-size:16px;}
.btn-ghost{
  padding:8px 2px;color:var(--primary);font-weight:600;
  border-radius:0;min-height:auto;position:relative;
}
.btn-ghost::after{
  content:"";position:absolute;left:0;bottom:2px;width:100%;height:1px;
  background:var(--primary);transform:scaleX(.35);transform-origin:left;
  transition:transform var(--t);
}
.btn-ghost:hover{transform:translateY(-2px);}
.btn-ghost:hover::after{transform:scaleX(1);}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none;}

.nav-toggle{
  display:none;
  width:44px;height:44px;border-radius:12px;
  border:1px solid rgba(255,255,255,.16);
  color:var(--text);font-size:17px;
  align-items:center;justify-content:center;
}
.nav-toggle:hover{background:rgba(23,224,168,.10);border-color:rgba(23,224,168,.5);}

/* ---------- breadcrumb ---------- */
.crumb-wrap{padding:24px 0 0;}
.crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--text-dim);
}
.crumb a{color:var(--text-dim);}
.crumb a:hover{color:var(--primary);}
.crumb .sep{opacity:.5;}
.crumb .current{color:var(--primary);font-weight:600;}

/* ---------- hero ---------- */
.cat-hero{
  position:relative;
  padding:56px 0 72px;
  overflow:hidden;
}
.cat-hero::before{
  content:"";
  position:absolute;inset:0;
  background-image:
    linear-gradient(180deg,rgba(7,12,22,.72),rgba(7,12,22,.94)),
    url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
  opacity:.9;
  z-index:0;
}
.cat-hero::after{
  content:"";
  position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:52px 52px;
  mask-image:radial-gradient(70% 70% at 40% 40%,#000,transparent 78%);
  -webkit-mask-image:radial-gradient(70% 70% at 40% 40%,#000,transparent 78%);
  z-index:0;
}
.hero-grid{
  display:grid;
  grid-template-columns:minmax(0,1.35fr) minmax(0,.85fr);
  gap:56px;
  align-items:center;
}
.badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  font-size:13px;font-weight:600;letter-spacing:1px;
  background:rgba(23,224,168,.12);
  border:1px solid rgba(23,224,168,.42);
  color:var(--primary);
  margin-bottom:20px;
}
h1.hero-title{
  font-size:clamp(30px,4.4vw,52px);
  line-height:1.2;
  font-weight:800;
  letter-spacing:1px;
  margin-bottom:20px;
}
h1.hero-title span{color:var(--primary);}
.hero-lead{
  font-size:17px;
  color:var(--text-dim);
  max-width:560px;
  margin-bottom:28px;
}
.hero-btns{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px;}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;}
.tag-pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:7px 16px;border-radius:999px;
  font-size:13px;color:var(--text-dim);
  border:1px solid rgba(23,224,168,.30);
  background:rgba(23,224,168,.05);
  transition:color var(--t),border-color var(--t),background var(--t);
}
.tag-pill:hover{color:var(--primary);border-color:rgba(23,224,168,.6);background:rgba(23,224,168,.10);}

.glass-card{
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border:1px solid rgba(255,255,255,.12);
  border-radius:var(--r-glass);
  padding:28px 26px;
  box-shadow:var(--shadow-card);
  position:relative;
  transition:transform var(--t),box-shadow var(--t);
}
.glass-card::before{
  content:"";position:absolute;left:18px;right:18px;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(23,224,168,.75),transparent);
}
.glass-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.glass-card h2{
  font-size:17px;font-weight:700;margin-bottom:6px;
}
.glass-card .card-sub{
  font-size:13px;color:var(--text-dim);margin-bottom:20px;
}
.step-list li{
  display:flex;gap:14px;
  padding:14px 0;
  border-top:1px solid var(--line);
}
.step-list li:first-child{border-top:0;}
.step-no{
  flex:0 0 34px;height:34px;border-radius:10px;
  display:grid;place-items:center;
  font-size:14px;font-weight:800;color:var(--primary);
  background:rgba(23,224,168,.10);
  border:1px solid rgba(23,224,168,.32);
}
.step-body strong{display:block;font-size:15px;font-weight:600;margin-bottom:4px;}
.step-body span{font-size:13.5px;color:var(--text-dim);line-height:1.7;}

/* ---------- zigzag ---------- */
.zz-row{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:56px;
  align-items:center;
  padding:44px 0;
  border-top:1px solid var(--line);
}
.zz-row:first-of-type{border-top:0;padding-top:0;}
.zz-row.is-reverse .zz-media{order:2;}
.zz-row.is-reverse .zz-text{order:1;}
.zz-media{
  position:relative;
  border-radius:var(--r-card);
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
}
.zz-media img{
  width:100%;
  aspect-ratio:16/9;
  object-fit:cover;
  filter:brightness(.82) saturate(1.05);
  transition:transform 400ms ease,filter var(--t);
}
.zz-media:hover img{transform:scale(1.03);filter:brightness(.92);}
.zz-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,12,22,.10),rgba(7,12,22,.55));
  pointer-events:none;
}
.zz-index{
  font-size:13px;font-weight:700;letter-spacing:3px;color:var(--primary);
  margin-bottom:12px;display:block;
}
.zz-text h2{
  font-size:clamp(20px,2vw,26px);
  font-weight:700;line-height:1.4;margin-bottom:14px;
}
.zz-text p{color:var(--text-dim);margin-bottom:16px;}
.plain-list li{
  position:relative;padding-left:22px;margin-bottom:10px;
  font-size:15px;color:var(--text-dim);
}
.plain-list li::before{
  content:"";position:absolute;left:0;top:12px;
  width:8px;height:8px;border-radius:3px;
  background:var(--primary);opacity:.85;
  box-shadow:0 0 10px rgba(23,224,168,.6);
}
.plain-list li strong{color:var(--text);font-weight:600;}

/* ---------- table ---------- */
.table-wrap{
  border:1px solid var(--line);
  border-radius:var(--r-card);
  background:var(--ink-700);
  box-shadow:var(--shadow-card);
  overflow-x:auto;
}
table.cmp{
  width:100%;
  border-collapse:collapse;
  min-width:640px;
  font-size:15px;
}
table.cmp caption{
  text-align:left;
  padding:18px 22px 0;
  font-size:14px;
  color:var(--text-dim);
}
table.cmp th,table.cmp td{
  padding:16px 22px;
  text-align:left;
  border-bottom:1px solid var(--line);
}
table.cmp thead th{
  font-size:13px;letter-spacing:1px;color:var(--text-dim);
  font-weight:600;background:rgba(255,255,255,.03);
}
table.cmp tbody tr:last-child td{border-bottom:0;}
table.cmp tbody tr:hover{background:rgba(23,224,168,.05);}
table.cmp td:first-child{color:var(--text);font-weight:600;}
table.cmp td{color:var(--text-dim);}
.pill-ok{
  display:inline-block;padding:3px 12px;border-radius:999px;
  font-size:12px;font-weight:600;
  background:rgba(23,224,168,.12);color:var(--primary);
  border:1px solid rgba(23,224,168,.36);
}
.pill-warn{
  display:inline-block;padding:3px 12px;border-radius:999px;
  font-size:12px;font-weight:600;
  background:rgba(255,159,28,.12);color:var(--accent);
  border:1px solid rgba(255,159,28,.36);
}

/* ---------- stats strip ---------- */
.stats{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  border:1px solid var(--line);
  border-radius:var(--r-glass);
  overflow:hidden;
}
.stat{
  padding:30px 22px;
  text-align:center;
  border-left:1px solid var(--line);
}
.stat:first-child{border-left:0;}
.stat b{
  display:block;
  font-size:clamp(30px,4vw,46px);
  font-weight:800;
  line-height:1.1;
  color:var(--accent);
  letter-spacing:1px;
}
.stat b small{font-size:.5em;font-weight:600;color:var(--text-dim);margin-left:4px;}
.stat span{display:block;margin-top:10px;font-size:14px;color:var(--text-dim);}

/* ---------- checklist cards ---------- */
.check-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.check-card{
  background:var(--ink-700);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:26px 24px;
  position:relative;
  box-shadow:var(--shadow-card);
  transition:transform var(--t),border-color var(--t),box-shadow var(--t);
}
.check-card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,rgba(255,255,255,.16),transparent);
}
.check-card:hover{transform:translateY(-4px);border-color:rgba(23,224,168,.5);box-shadow:var(--shadow-hover);}
.check-card h3{
  font-size:18px;font-weight:600;margin:14px 0 12px;
}
.check-card p{font-size:14.5px;color:var(--text-dim);}
.check-icon{
  width:42px;height:42px;border-radius:12px;display:grid;place-items:center;
  background:rgba(23,224,168,.10);
  border:1px solid rgba(23,224,168,.34);
  color:var(--primary);font-size:17px;
}

/* ---------- faq ---------- */
.accordion{border:0;background:transparent;margin:0;}
.accordion .accordion-item{
  background:var(--ink-700);
  border:1px solid var(--line);
  border-radius:999px;
  margin-bottom:14px;
  overflow:hidden;
  transition:border-color var(--t),background var(--t),border-radius var(--t);
}
.accordion .accordion-item.is-active{
  border-color:rgba(23,224,168,.5);
  border-radius:18px;
}
.accordion .accordion-title{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:16px 26px;
  font-size:17px;font-weight:600;color:var(--text);
  border:0;background:transparent;
  position:relative;
}
.accordion .accordion-title::before{
  content:"";
  position:absolute;left:0;top:14px;bottom:14px;width:3px;
  background:var(--primary);
  border-radius:0 3px 3px 0;
  opacity:0;box-shadow:0 0 12px rgba(23,224,168,.8);
  transition:opacity var(--t);
}
.accordion .accordion-item.is-active .accordion-title::before{opacity:1;}
.accordion .accordion-title::after{
  content:"+";
  font-size:20px;font-weight:400;
  color:var(--primary);
  transition:transform var(--t);
  flex:0 0 auto;
}
.accordion .accordion-item.is-active .accordion-title::after{transform:rotate(90deg);}
.accordion .accordion-content{
  display:none;
  padding:4px 26px 20px;
  font-size:15px;line-height:1.85;color:var(--text-dim);
  border:0;background:transparent;
}
.accordion .accordion-content.is-open{display:block;}

/* ---------- related ---------- */
.related-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.rel-card{
  display:block;
  background:var(--ink-700);
  border:1px solid var(--line);
  border-radius:var(--r-card);
  padding:24px 22px;
  color:var(--text);
  box-shadow:var(--shadow-card);
  transition:transform var(--t),border-color var(--t),box-shadow var(--t);
}
.rel-card:hover{transform:translateY(-4px);border-color:rgba(23,224,168,.5);box-shadow:var(--shadow-hover);color:var(--text);}
.rel-card .rel-badge{
  display:inline-block;font-size:12px;font-weight:600;
  padding:4px 12px;border-radius:999px;
  background:rgba(23,224,168,.10);
  border:1px solid rgba(23,224,168,.32);
  color:var(--primary);
  margin-bottom:14px;
}
.rel-card h3{font-size:18px;font-weight:600;margin-bottom:10px;}
.rel-card p{font-size:14.5px;color:var(--text-dim);margin-bottom:16px;}
.rel-more{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14px;font-weight:600;color:var(--primary);
}
.rel-more i{transition:transform var(--t);}
.rel-card:hover .rel-more i{transform:translateX(4px);}

/* ---------- cta band ---------- */
.cta-band{
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border:1px solid rgba(255,255,255,.12);
  border-radius:var(--r-glass);
  padding:48px 44px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
  position:relative;
  overflow:hidden;
}
.cta-band::after{
  content:"";
  position:absolute;right:-60px;top:-60px;
  width:260px;height:260px;border-radius:50%;
  background:radial-gradient(circle,rgba(23,224,168,.22),transparent 68%);
  pointer-events:none;
}
.cta-band h2{font-size:clamp(20px,2.2vw,28px);font-weight:700;margin-bottom:10px;}
.cta-band p{color:var(--text-dim);max-width:560px;font-size:15px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- footer ---------- */
.site-footer{
  margin-top:96px;
  background:#05090F;
  border-top:1px solid var(--line);
  position:relative;
  z-index:1;
}
.site-footer::before{
  content:"";
  position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(23,224,168,.85),transparent);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;
  padding:64px 0 48px;
}
.footer-col h3{
  font-size:15px;font-weight:700;margin-bottom:18px;
  letter-spacing:1px;
}
.footer-brand p{
  margin-top:18px;font-size:14px;color:var(--text-dim);line-height:1.85;
}
.footer-links{display:flex;flex-direction:column;gap:12px;}
.footer-links a{font-size:14px;color:var(--text-dim);}
.footer-links a:hover{color:var(--primary);}
.footer-info{display:flex;flex-direction:column;gap:14px;}
.footer-info li{
  display:flex;gap:10px;font-size:14px;color:var(--text-dim);line-height:1.7;
}
.footer-info i{color:var(--primary);margin-top:4px;flex:0 0 auto;}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:22px 0 28px;
  text-align:center;
  font-size:13px;
  color:var(--text-dim);
}

/* ---------- back to top ---------- */
.to-top{
  position:fixed;right:26px;bottom:26px;z-index:70;
  width:46px;height:46px;border-radius:50%;
  display:grid;place-items:center;
  color:var(--primary);
  background:rgba(12,20,36,.85);
  border:1px solid rgba(23,224,168,.55);
  box-shadow:0 0 20px rgba(23,224,168,.28);
  opacity:0;visibility:hidden;
  transition:opacity var(--t),transform var(--t),visibility var(--t);
}
.to-top.is-show{opacity:1;visibility:visible;}
.to-top:hover{transform:translateY(-3px);background:rgba(23,224,168,.14);}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .container{padding:0 24px;}
  .header-inner{height:64px;}
  .main-nav{
    position:fixed;
    top:64px;left:0;right:0;
    flex-direction:column;
    align-items:stretch;
    gap:4px;
    padding:18px 24px 96px;
    background:rgba(7,12,22,.98);
    border-bottom:1px solid var(--line);
    transform:translateY(-12px);
    opacity:0;visibility:hidden;
    pointer-events:none;
    transition:opacity var(--t),transform var(--t),visibility var(--t);
    max-height:calc(100vh - 64px);
    overflow-y:auto;
  }
  .main-nav.is-open{opacity:1;visibility:visible;transform:translateY(0);pointer-events:auto;}
  .nav-link{padding:14px 12px;font-size:16px;border-radius:12px;}
  .nav-link::after{display:none;}
  .nav-link.is-active{background:rgba(23,224,168,.10);}
  .nav-toggle{display:inline-flex;}
  .header-actions .btn-outline{display:none;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .section{padding:64px 0;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:48px 0 36px;}
  .related-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:768px){
  .container{padding:0 20px;}
  .zz-row{grid-template-columns:1fr;gap:26px;padding:34px 0;}
  .zz-row.is-reverse .zz-media{order:0;}
  .zz-row.is-reverse .zz-text{order:0;}
  .check-grid{grid-template-columns:1fr;}
  .related-grid{grid-template-columns:1fr;}
  .stats{grid-template-columns:1fr 1fr;}
  .stat{border-left:1px solid var(--line);}
  .stat:nth-child(odd){border-left:0;}
  .stat:nth-child(n+3){border-top:1px solid var(--line);}
  .cta-band{padding:32px 24px;}
  .footer-grid{grid-template-columns:1fr;}
  .accordion .accordion-title{padding:15px 18px;font-size:16px;}
  .accordion .accordion-content{padding:2px 18px 18px;}
  .accordion .accordion-item{border-radius:18px;}
}
@media (max-width:520px){
  .hero-btns{flex-direction:column;align-items:stretch;}
  .hero-btns .btn{width:100%;}
  .cta-actions{flex-direction:column;align-items:stretch;width:100%;}
  .cta-actions .btn{width:100%;}
  .header-actions .btn-primary{padding:10px 14px;font-size:14px;}
  .brand-text em{display:none;}
  h1.hero-title{font-size:30px;}
  .to-top{right:16px;bottom:16px;}
}

/* roulang page: category2 */
:root{
  --ink-900:#070C16;
  --ink-800:#0C1424;
  --ink-700:#121C30;
  --line:rgba(255,255,255,.10);
  --primary:#17E0A8;
  --primary-700:#0FA87E;
  --accent:#FF9F1C;
  --text:#E8EEF6;
  --text-dim:#93A3B8;
  --warn:#FF5C5C;
  --radius-card:16px;
  --radius-glass:18px;
  --radius-btn:12px;
  --radius-input:10px;
  --shadow-card:0 10px 30px rgba(0,0,0,.35);
  --shadow-hover:0 16px 40px rgba(0,0,0,.45);
  --s1:4px; --s2:8px; --s3:12px; --s4:16px; --s5:24px; --s6:32px; --s7:48px; --s8:64px; --s9:96px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--text);
  font-family:'HarmonyOS Sans SC','PingFang SC','Microsoft YaHei',system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  background-image:
    radial-gradient(900px 520px at 82% -8%, rgba(23,224,168,.14), transparent 62%),
    radial-gradient(760px 460px at 6% 22%, rgba(255,159,28,.07), transparent 60%);
  background-attachment:fixed;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .2s ease}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0}
h1,h2,h3{margin:0;line-height:1.3;font-weight:700}
h1{font-size:clamp(30px,4.4vw,52px);font-weight:800;line-height:1.2}
h2{font-size:clamp(24px,2.6vw,34px)}
h3{font-size:20px;font-weight:600}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
:focus-visible{outline:3px solid rgba(23,224,168,.6);outline-offset:2px;border-radius:6px}
::selection{background:rgba(23,224,168,.3);color:#fff}

/* 布局骨架 */
.grid-container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
.grid-x{display:flex;flex-wrap:wrap;margin-left:-12px;margin-right:-12px}
.cell{flex:0 0 auto;width:100%;min-width:0;padding-left:12px;padding-right:12px}
.align-middle{align-items:center}
@media (min-width:768px){
  .medium-6{width:50%}
  .medium-flex-child-auto{flex:1 1 auto}
}
@media (min-width:1024px){
  .large-4{width:33.3333%}
  .large-5{width:41.6667%}
  .large-7{width:58.3333%}
  .large-8{width:66.6667%}
}
@media (min-width:1024px){
  .container,.grid-container{padding-left:32px;padding-right:32px}
}
@media (min-width:1441px){
  .container,.grid-container{max-width:1280px}
}

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:80;
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.015));
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
  transition:background .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.site-header.is-scrolled{
  background:linear-gradient(160deg,rgba(12,20,36,.95),rgba(7,12,22,.92));
  border-bottom-color:rgba(23,224,168,.32);
  box-shadow:0 8px 28px rgba(0,0,0,.5);
}
.header-inner{display:flex;align-items:center;gap:20px;height:72px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:38px;height:38px;border-radius:12px;display:grid;place-items:center;font-size:16px;
  color:var(--primary);background:linear-gradient(160deg,rgba(23,224,168,.28),rgba(23,224,168,.05));
  border:1px solid rgba(23,224,168,.4);
  box-shadow:0 0 18px rgba(23,224,168,.22);
}
.brand-text{display:flex;flex-direction:column;line-height:1.14}
.brand-text strong{font-size:17px;font-weight:800;letter-spacing:.02em}
.brand-text em{font-style:normal;font-size:11px;color:var(--text-dim);letter-spacing:.14em}
.main-nav{flex:1 1 auto;display:flex;align-items:center;justify-content:center;gap:26px}
.nav-link{position:relative;padding:10px 2px;font-size:15px;color:var(--text-dim);white-space:nowrap;transition:color .2s ease}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:2px;width:0;height:2px;border-radius:2px;
  background:var(--primary);transform:translateX(-50%);
  transition:width .25s ease;box-shadow:0 0 10px rgba(23,224,168,.8);
}
.nav-link:hover{color:var(--text)}
.nav-link:hover::after{width:100%}
.nav-link.is-active{color:var(--primary)}
.nav-link.is-active::after{width:100%}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:10px}
.nav-cta{display:none}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;place-items:center;
  border:1px solid var(--line);color:var(--text);font-size:17px;
}
.nav-toggle:hover{border-color:rgba(23,224,168,.45);color:var(--primary)}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 20px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;white-space:nowrap;
  transition:transform .2s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn i{font-size:14px}
.btn-primary{background:var(--primary);color:#04150F;box-shadow:0 8px 26px rgba(23,224,168,.28)}
.btn-primary:hover{transform:translateY(-2px);background:#22f0b6;box-shadow:0 12px 32px rgba(23,224,168,.42)}
.btn-primary:active{transform:translateY(0);box-shadow:0 6px 18px rgba(23,224,168,.3)}
.btn-outline{border-color:var(--line);color:var(--text)}
.btn-outline:hover{background:rgba(23,224,168,.10);border-color:rgba(23,224,168,.48);color:var(--primary);transform:translateY(-2px)}
.btn-accent{
  background:var(--accent);color:#2A1400;
  box-shadow:0 8px 26px rgba(255,159,28,.3),0 0 0 1px rgba(23,224,168,.55);
}
.btn-accent:hover{transform:translateY(-2px);box-shadow:0 14px 36px rgba(255,159,28,.42),0 0 0 1px rgba(23,224,168,.8)}
.btn-ghost{color:var(--primary);padding:0 4px;min-height:auto;position:relative}
.btn-ghost::after{content:"";position:absolute;left:4px;right:4px;bottom:-2px;height:1px;background:var(--primary);transform:scaleX(0);transform-origin:center;transition:transform .25s ease}
.btn-ghost:hover::after{transform:scaleX(1)}
.btn-lg{min-height:52px;padding:0 28px;font-size:16px;border-radius:14px}
.btn.is-disabled,.btn[disabled]{opacity:.45;pointer-events:none}

/* 面包屑 */
.crumb-bar{padding:20px 0 0}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-dim)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb span{opacity:.5}
.breadcrumb em{font-style:normal;color:var(--primary)}

/* 分类 Hero */
.page-hero{position:relative;overflow:hidden;padding:44px 0 72px}
.page-hero-bg{
  position:absolute;inset:0;background-size:cover;background-position:center;
  opacity:.20;filter:saturate(.85);
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(180deg,rgba(7,12,22,.55),rgba(7,12,22,.95) 72%),
    radial-gradient(620px 380px at 78% 18%, rgba(23,224,168,.20), transparent 66%),
    repeating-linear-gradient(90deg,rgba(255,255,255,.03) 0 1px,transparent 1px 76px);
  pointer-events:none;
}
.page-hero-inner{position:relative;z-index:2}
.page-hero .badge{margin-top:22px}
.page-hero h1{max-width:15em}
.page-hero .lead{margin-top:18px;max-width:640px;font-size:17px;color:#C6D3E2}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:7px 14px;border-radius:999px;font-size:13px;color:var(--primary);
  border:1px solid rgba(23,224,168,.38);background:rgba(23,224,168,.07);
}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}

/* 徽章 */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:999px;font-size:12.5px;font-weight:600;letter-spacing:.06em;
  color:var(--primary);background:rgba(23,224,168,.12);border:1px solid rgba(23,224,168,.35);
}
.badge-accent{color:var(--accent);background:rgba(255,159,28,.12);border-color:rgba(255,159,28,.4)}

/* 玻璃卡 */
.glass-card{
  border-radius:var(--radius-glass);padding:26px;
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border:1px solid rgba(255,255,255,.12);
  box-shadow:0 18px 44px rgba(0,0,0,.45);
  animation:floatY 6s ease-in-out infinite;
}
@keyframes floatY{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}
.glass-card-head{
  display:flex;align-items:center;gap:10px;font-size:14px;font-weight:700;
  padding-bottom:16px;border-bottom:1px solid var(--line);letter-spacing:.04em;
}
.glass-card-head .dot{
  width:9px;height:9px;border-radius:50%;background:var(--primary);
  box-shadow:0 0 12px rgba(23,224,168,.95);
}
.glass-steps{margin-top:8px}
.glass-steps li{display:flex;gap:14px;padding:16px 0;border-bottom:1px dashed rgba(255,255,255,.09)}
.glass-steps li:last-child{border-bottom:0}
.gs-idx{
  flex:0 0 30px;height:30px;border-radius:9px;display:grid;place-items:center;
  font-size:12px;font-weight:800;color:var(--primary);
  background:rgba(23,224,168,.12);border:1px solid rgba(23,224,168,.32);
}
.glass-steps strong{display:block;font-size:15px;font-weight:700;margin-bottom:2px}
.glass-steps p{font-size:13.5px;color:var(--text-dim);line-height:1.7}
.glass-meta{margin-top:14px;padding-top:14px;border-top:1px solid var(--line);font-size:12.5px;color:var(--text-dim)}

/* 板块 */
.section{padding:88px 0}
.section-alt{background:var(--ink-800);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{display:flex;gap:16px;align-items:flex-start;margin-bottom:44px}
.head-bar{
  flex:0 0 3px;width:3px;height:44px;margin-top:6px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 14px rgba(23,224,168,.85);
}
.head-idx{display:block;font-size:12.5px;font-weight:800;letter-spacing:.22em;color:var(--primary);margin-bottom:6px}
.section-head p{margin-top:12px;max-width:760px;color:var(--text-dim);font-size:15px}

/* 图文 */
.figure-card{
  border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--line);
  background:var(--ink-700);box-shadow:var(--shadow-card);
}
.figure-card img{width:100%;aspect-ratio:16/9;object-fit:cover;filter:brightness(.82) saturate(.95)}
.figure-card figcaption{padding:14px 18px;font-size:13px;color:var(--text-dim);border-top:1px solid var(--line)}

/* 清单 */
.check-list{margin-top:14px}
.check-list li{position:relative;padding-left:26px;margin-top:12px;color:var(--text-dim);font-size:15px;line-height:1.8}
.check-list li::before{
  content:"";position:absolute;left:0;top:11px;width:8px;height:8px;border-radius:2px;
  background:var(--primary);transform:rotate(45deg);box-shadow:0 0 10px rgba(23,224,168,.75);
}
.check-list li strong{color:var(--text)}

/* 时间轴 */
.timeline{position:relative;margin-top:10px;padding-left:6px}
.timeline::before{
  content:"";position:absolute;left:33px;top:20px;bottom:26px;width:2px;
  background:linear-gradient(180deg,rgba(23,224,168,.75),rgba(23,224,168,.05));
}
.timeline-item{position:relative;display:flex;gap:24px;padding-bottom:34px}
.timeline-item:last-child{padding-bottom:0}
.timeline-index{
  position:relative;z-index:2;flex:0 0 56px;height:56px;border-radius:50%;
  display:grid;place-items:center;font-size:16px;font-weight:800;color:#04150F;
  background:var(--primary);box-shadow:0 8px 26px rgba(23,224,168,.3);
}
.timeline-body{
  position:relative;flex:1 1 auto;padding:24px 26px;border-radius:var(--radius-card);
  background:var(--ink-700);border:1px solid var(--line);box-shadow:var(--shadow-card);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.timeline-body::before{
  content:"";position:absolute;top:0;left:18px;right:18px;height:1px;
  background:linear-gradient(90deg,rgba(255,255,255,.35),transparent);
}
.timeline-body:hover{transform:translateY(-4px);border-color:rgba(23,224,168,.45);box-shadow:var(--shadow-hover)}
.timeline-body h3{margin-bottom:10px}
.timeline-body>p{color:var(--text-dim);font-size:15px}
.timeline-note{
  margin-top:16px;padding:12px 16px;border-radius:12px;font-size:13.5px;color:var(--accent);
  background:rgba(255,159,28,.08);border:1px solid rgba(255,159,28,.28);
}

/* 表格 */
.table-wrap{
  overflow-x:auto;border-radius:var(--radius-card);border:1px solid var(--line);
  background:var(--ink-700);box-shadow:var(--shadow-card);
}
table.data-table{width:100%;min-width:720px;border-collapse:collapse}
.data-table th{
  padding:16px 18px;text-align:left;font-size:14px;font-weight:700;color:var(--text);
  background:rgba(23,224,168,.09);border-bottom:1px solid rgba(23,224,168,.25);white-space:nowrap;
}
.data-table td{
  padding:16px 18px;font-size:14.5px;color:var(--text-dim);vertical-align:top;
  border-bottom:1px solid rgba(255,255,255,.06);
}
.data-table tbody tr:hover td{background:rgba(255,255,255,.035);color:var(--text)}
.data-table tbody tr:last-child td{border-bottom:0}
.data-table td strong{color:var(--text);font-weight:700}

/* FAQ */
.faq-list{display:grid;gap:14px}
.faq-item{
  background:var(--ink-700);border:1px solid var(--line);border-radius:999px;
  overflow:hidden;transition:border-color .22s ease,border-radius .22s ease,box-shadow .22s ease;
}
.faq-item:hover{border-color:rgba(23,224,168,.35)}
.faq-item.is-open{border-radius:18px;border-color:rgba(23,224,168,.45);box-shadow:0 12px 32px rgba(0,0,0,.4)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:18px 26px;text-align:left;font-size:17px;font-weight:600;line-height:1.55;
}
.faq-item.is-open .faq-q{color:var(--primary)}
.faq-icon{position:relative;flex:0 0 18px;width:18px;height:18px}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--primary);border-radius:2px;transition:transform .25s ease,opacity .25s ease;
}
.faq-icon::before{left:0;top:8px;width:18px;height:2px}
.faq-icon::after{left:8px;top:0;width:2px;height:18px}
.faq-item.is-open .faq-icon::after{transform:rotate(90deg);opacity:0}
.faq-a{display:none;padding:0 26px 22px;position:relative}
.faq-a p{font-size:15px;color:var(--text-dim);line-height:1.85}
.faq-item.is-open .faq-a{display:block;padding-top:16px}
.faq-item.is-open .faq-a::before{
  content:"";position:absolute;left:0;top:16px;bottom:22px;width:3px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 14px rgba(23,224,168,.85);
}

/* 相关分类 */
.rel-grid{display:grid;gap:20px;grid-template-columns:repeat(3,minmax(0,1fr))}
.rel-card{
  display:block;padding:26px;border-radius:var(--radius-card);
  background:var(--ink-700);border:1px solid var(--line);box-shadow:var(--shadow-card);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.rel-card::before{
  content:"";display:block;width:34px;height:3px;border-radius:2px;margin-bottom:18px;
  background:var(--primary);box-shadow:0 0 12px rgba(23,224,168,.8);
}
.rel-card:hover{transform:translateY(-4px);border-color:rgba(23,224,168,.5);box-shadow:var(--shadow-hover)}
.rel-card h3{margin-bottom:10px}
.rel-card p{font-size:14.5px;color:var(--text-dim)}
.rel-more{display:inline-flex;align-items:center;gap:6px;margin-top:16px;font-size:14px;color:var(--primary)}
.rel-more i{transition:transform .2s ease}
.rel-card:hover .rel-more i{transform:translateX(4px)}

/* CTA 条 */
.cta-band{
  border-radius:22px;padding:44px 40px;
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border:1px solid rgba(23,224,168,.28);
  box-shadow:0 20px 50px rgba(0,0,0,.5);
  display:flex;flex-wrap:wrap;gap:28px;align-items:center;justify-content:space-between;
}
.cta-band h2{font-size:clamp(22px,2.4vw,30px)}
.cta-band p{margin-top:12px;color:var(--text-dim);font-size:15px;max-width:620px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* 页脚 */
.site-footer{
  margin-top:20px;background:#050A13;border-top:1px solid transparent;
  position:relative;padding-top:64px;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(23,224,168,.8),transparent);
}
.footer-grid{display:grid;gap:36px;grid-template-columns:1.5fr 1fr 1fr 1.2fr}
.footer-brand .brand{margin-bottom:18px}
.footer-col h3{font-size:16px;margin-bottom:18px;letter-spacing:.04em}
.footer-brand p{font-size:14px;color:var(--text-dim);line-height:1.85}
.footer-links{display:flex;flex-direction:column;gap:12px}
.footer-links a{font-size:14.5px;color:var(--text-dim)}
.footer-links a:hover{color:var(--primary)}
.footer-info li{display:flex;gap:10px;font-size:14px;color:var(--text-dim);margin-bottom:14px;line-height:1.75}
.footer-info i{color:var(--primary);margin-top:6px;font-size:13px}
.footer-bottom{
  margin-top:56px;padding:22px 0 32px;border-top:1px solid var(--line);
  text-align:center;font-size:13px;color:var(--text-dim);
}

/* 返回顶部 */
.back-top{
  position:fixed;right:22px;bottom:26px;z-index:90;
  width:46px;height:46px;border-radius:50%;display:grid;place-items:center;
  color:var(--primary);background:rgba(12,20,36,.9);
  border:1px solid rgba(23,224,168,.45);
  box-shadow:0 0 20px rgba(23,224,168,.28);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .25s ease,transform .25s ease,visibility .25s ease,background .2s ease;
}
.back-top.is-show{opacity:1;visibility:visible;transform:translateY(0)}
.back-top:hover{background:rgba(23,224,168,.16)}

/* 响应式 */
@media (max-width:1023px){
  .header-inner{height:64px;gap:12px}
  .nav-toggle{display:grid}
  .header-actions .btn{display:none}
  .main-nav{
    position:fixed;left:0;right:0;top:64px;bottom:0;
    flex-direction:column;align-items:stretch;justify-content:flex-start;
    gap:0;padding:24px 24px 140px;overflow-y:auto;
    background:rgba(7,12,22,.98);
    backdrop-filter:blur(14px);
    transform:translateX(102%);transition:transform .3s ease;
  }
  .main-nav.is-open{transform:translateX(0)}
  .main-nav .nav-link{
    width:100%;padding:16px 2px;font-size:17px;border-bottom:1px solid var(--line);
  }
  .main-nav .nav-link::after{display:none}
  .main-nav .nav-link.is-active{color:var(--primary)}
  .nav-cta{
    display:flex;align-items:center;justify-content:center;margin-top:26px;
    min-height:52px;border-radius:14px;font-weight:700;color:#04150F;
    background:var(--primary);box-shadow:0 10px 30px rgba(23,224,168,.35);
  }
  .section{padding:56px 0}
  .page-hero{padding:32px 0 56px}
  .timeline::before{left:25px}
  .timeline-index{flex:0 0 44px;height:44px;font-size:14px}
  .timeline-item{gap:16px;padding-bottom:26px}
  .rel-grid{grid-template-columns:1fr}
  .cta-band{padding:32px 24px}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
}
@media (max-width:639px){
  .hero-cta .btn,.cta-actions .btn{width:100%}
  .faq-q{padding:16px 20px;font-size:15.5px}
  .faq-a{padding-left:20px;padding-right:20px}
  .timeline-body{padding:20px 18px}
  .glass-card{padding:20px}
  .footer-grid{grid-template-columns:1fr}
  .brand-text em{letter-spacing:.08em}
}

/* roulang page: category3 */
:root{
  --ink-900:#070C16;
  --ink-800:#0C1424;
  --ink-700:#121C30;
  --line:rgba(255,255,255,.10);
  --primary:#17E0A8;
  --primary-700:#0FA87E;
  --accent:#FF9F1C;
  --text:#E8EEF6;
  --text-dim:#93A3B8;
  --warn:#FF5C5C;
  --radius-card:16px;
  --radius-glass:18px;
  --radius-btn:12px;
  --radius-input:10px;
  --shadow-card:0 10px 30px rgba(0,0,0,.35);
  --shadow-hover:0 16px 40px rgba(0,0,0,.45);
  --s-1:4px; --s-2:8px; --s-3:12px; --s-4:16px; --s-5:24px; --s-6:32px; --s-7:48px; --s-8:64px; --s-9:96px;
  --section-gap:88px;
  --font-cn:'HarmonyOS Sans SC','PingFang SC','Microsoft YaHei',system-ui,-apple-system,'Segoe UI',sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:
    radial-gradient(1200px 620px at 82% -8%, rgba(23,224,168,.14), transparent 62%),
    radial-gradient(900px 520px at 4% 12%, rgba(255,159,28,.07), transparent 60%),
    var(--ink-900);
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;}
a:hover{color:var(--primary);}
button{font-family:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:3px solid rgba(23,224,168,.85);outline-offset:2px;border-radius:6px;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:32px;
  padding-right:32px;
}
@media (min-width:1441px){ .container{max-width:1280px;} }

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 24px;
  min-height:44px;
  border-radius:var(--radius-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  line-height:1;
  cursor:pointer;
  transition:transform .2s ease, box-shadow .2s ease, background-color .2s ease, border-color .2s ease, color .2s ease;
  white-space:nowrap;
}
.btn i{font-size:14px;}
.btn-primary{
  background:var(--primary);
  color:#04180F;
  box-shadow:0 8px 26px rgba(23,224,168,.28);
}
.btn-primary:hover{background:#22F0B7;color:#04180F;transform:translateY(-2px);box-shadow:0 12px 32px rgba(23,224,168,.36);}
.btn-primary:active{transform:translateY(0);}
.btn-outline{
  background:transparent;
  border-color:rgba(23,224,168,.45);
  color:var(--primary);
}
.btn-outline:hover{background:rgba(23,224,168,.10);color:var(--primary);transform:translateY(-2px);}
.btn-ghost{
  background:transparent;
  color:var(--text);
  padding:10px 4px;
  position:relative;
}
.btn-ghost::after{
  content:"";
  position:absolute;
  left:4px;right:4px;bottom:4px;
  height:1px;
  background:var(--primary);
  transform:scaleX(0);
  transform-origin:center;
  transition:transform .25s ease;
}
.btn-ghost:hover{color:var(--primary);}
.btn-ghost:hover::after{transform:scaleX(1);}
.btn-accent{
  background:var(--accent);
  color:#1B1000;
  box-shadow:0 0 0 1px rgba(23,224,168,.5), 0 10px 30px rgba(255,159,28,.26);
  border-radius:999px;
  padding:16px 34px;
  font-size:16px;
}
.btn-accent:hover{background:#FFB444;color:#1B1000;transform:translateY(-2px);box-shadow:0 0 0 1px rgba(23,224,168,.65), 0 14px 36px rgba(255,159,28,.34);}
.btn-accent:active{transform:translateY(0);}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none;}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  background:linear-gradient(160deg, rgba(255,255,255,.07), rgba(255,255,255,.02));
}
.site-header::after{
  content:"";
  position:absolute;left:0;right:0;bottom:0;
  height:1px;
  background:linear-gradient(90deg, transparent, rgba(23,224,168,.55), transparent);
  opacity:.55;
  transition:opacity .25s ease;
}
.site-header.is-scrolled{background:rgba(7,12,22,.92);}
.site-header.is-scrolled::after{opacity:1;}
.header-inner{
  display:flex;
  align-items:center;
  gap:var(--s-5);
  height:72px;
}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.brand-mark{
  width:40px;height:40px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:12px;
  background:linear-gradient(150deg, rgba(23,224,168,.9), rgba(15,168,126,.65));
  color:#04180F;
  font-size:18px;
  box-shadow:0 8px 22px rgba(23,224,168,.3);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:18px;font-weight:800;letter-spacing:.5px;color:var(--text);}
.brand-text em{font-style:normal;font-size:12px;color:var(--text-dim);letter-spacing:1.5px;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{
  position:relative;
  padding:10px 14px;
  font-size:15px;
  color:var(--text-dim);
  border-radius:10px;
  transition:color .2s ease, background-color .2s ease;
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:50%;bottom:4px;
  width:calc(100% - 28px);
  height:2px;
  background:var(--primary);
  border-radius:2px;
  transform:translateX(-50%) scaleX(0);
  transition:transform .25s ease;
}
.nav-link:hover{color:var(--text);background:rgba(255,255,255,.04);}
.nav-link:hover::after{transform:translateX(-50%) scaleX(1);}
.nav-link.is-active{color:var(--primary);}
.nav-link.is-active::after{transform:translateX(-50%) scaleX(1);}
.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:12px;
  background:transparent;
  border:1px solid var(--line);
  color:var(--text);
  font-size:17px;
  cursor:pointer;
  transition:background-color .2s ease,border-color .2s ease;
}
.nav-toggle:hover{background:rgba(255,255,255,.06);border-color:rgba(23,224,168,.5);color:var(--primary);}

/* ---------- 面包屑 ---------- */
.crumb-bar{
  border-bottom:1px solid var(--line);
  background:rgba(12,20,36,.55);
}
.crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  padding:16px 0;
  font-size:13px;
  color:var(--text-dim);
}
.crumb a{color:var(--text-dim);}
.crumb a:hover{color:var(--primary);}
.crumb .sep{opacity:.5;}
.crumb .current{color:var(--primary);font-weight:600;}

/* ---------- 分类 Hero ---------- */
.cat-hero{
  position:relative;
  padding:64px 0 56px;
  overflow:hidden;
  border-bottom:1px solid var(--line);
}
.cat-hero::before{
  content:"";
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  opacity:.14;
  filter:saturate(105%);
}
.cat-hero::after{
  content:"";
  position:absolute;inset:0;
  background:
    radial-gradient(760px 340px at 18% 10%, rgba(23,224,168,.20), transparent 68%),
    linear-gradient(180deg, rgba(7,12,22,.62), rgba(7,12,22,.94));
}
.cat-hero .container{position:relative;z-index:2;}
.cat-hero-grid{
  display:grid;
  grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);
  gap:48px;
  align-items:center;
}
.badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;
  border-radius:999px;
  border:1px solid rgba(23,224,168,.45);
  background:rgba(23,224,168,.10);
  color:var(--primary);
  font-size:13px;
  font-weight:600;
  letter-spacing:.5px;
}
.cat-hero h1{
  margin:18px 0 16px;
  font-size:clamp(30px,4.4vw,46px);
  line-height:1.2;
  font-weight:800;
  letter-spacing:.5px;
}
.cat-hero h1 span{color:var(--primary);}
.cat-hero p.lead{
  max-width:620px;
  font-size:16px;
  color:var(--text-dim);
  line-height:1.9;
}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:7px 14px;
  border-radius:999px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  font-size:13px;
  color:var(--text-dim);
  transition:border-color .2s ease,color .2s ease,transform .2s ease;
}
.tag:hover{border-color:rgba(23,224,168,.5);color:var(--primary);transform:translateY(-2px);}
.hero-panel{
  border-radius:var(--radius-glass);
  border:1px solid rgba(255,255,255,.10);
  background:linear-gradient(160deg, rgba(255,255,255,.07), rgba(255,255,255,.02));
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  padding:26px;
  box-shadow:var(--shadow-card);
  animation:floatPanel 6s ease-in-out infinite;
}
@keyframes floatPanel{
  0%,100%{transform:translateY(0);}
  50%{transform:translateY(-6px);}
}
.hero-panel h2{
  font-size:17px;
  font-weight:700;
  margin-bottom:6px;
}
.hero-panel .panel-sub{font-size:13px;color:var(--text-dim);margin-bottom:18px;}
.panel-list li{
  display:flex;gap:14px;
  padding:14px 0;
  border-top:1px solid var(--line);
}
.panel-list li:first-child{border-top:0;padding-top:0;}
.panel-list .num{
  flex:0 0 auto;
  width:30px;height:30px;
  border-radius:9px;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:700;
  background:rgba(23,224,168,.14);
  color:var(--primary);
  border:1px solid rgba(23,224,168,.32);
}
.panel-list strong{display:block;font-size:15px;font-weight:700;margin-bottom:2px;}
.panel-list span{font-size:13.5px;color:var(--text-dim);line-height:1.7;}

/* ---------- 主体布局：左目录 + 右内容 ---------- */
.section{padding:var(--section-gap) 0;}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head .eyebrow{
  display:flex;align-items:center;gap:10px;
  font-size:13px;color:var(--primary);letter-spacing:1px;font-weight:600;
  margin-bottom:12px;
}
.section-head .eyebrow::before{
  content:"";
  width:3px;height:16px;border-radius:2px;
  background:var(--primary);
  box-shadow:0 0 12px rgba(23,224,168,.7);
}
.section-head h2{
  font-size:clamp(24px,2.6vw,34px);
  line-height:1.3;
  font-weight:700;
  margin-bottom:14px;
}
.section-head p{color:var(--text-dim);font-size:15.5px;}

.doc-layout{
  display:grid;
  grid-template-columns:264px minmax(0,1fr);
  gap:48px;
  align-items:start;
}
.toc{
  position:sticky;
  top:96px;
  border-radius:var(--radius-glass);
  border:1px solid var(--line);
  background:linear-gradient(160deg, rgba(255,255,255,.06), rgba(255,255,255,.015));
  padding:22px 20px;
  box-shadow:var(--shadow-card);
}
.toc h2{
  font-size:14px;
  letter-spacing:1.2px;
  color:var(--text-dim);
  font-weight:700;
  margin-bottom:14px;
}
.toc-list li{margin-bottom:2px;}
.toc-list a{
  display:flex;gap:10px;align-items:flex-start;
  padding:9px 10px;
  border-radius:10px;
  font-size:14px;
  color:var(--text-dim);
  line-height:1.55;
  border-left:3px solid transparent;
  transition:color .2s ease,background-color .2s ease,border-color .2s ease,transform .2s ease;
}
.toc-list a i{font-size:11px;margin-top:6px;opacity:.6;}
.toc-list a:hover{color:var(--text);background:rgba(255,255,255,.05);transform:translateX(2px);}
.toc-list a.is-current{color:var(--primary);border-left-color:var(--primary);background:rgba(23,224,168,.08);}
.toc-note{
  margin-top:18px;
  padding-top:16px;
  border-top:1px dashed var(--line);
  font-size:13px;
  color:var(--text-dim);
  line-height:1.75;
}
.toc-note a{color:var(--primary);font-weight:600;}

.doc-content > section{margin-bottom:56px;scroll-margin-top:100px;}
.doc-content > section:last-child{margin-bottom:0;}
.doc-content h2{
  font-size:clamp(21px,2.2vw,27px);
  line-height:1.35;
  font-weight:700;
  margin-bottom:14px;
  display:flex;gap:12px;align-items:baseline;
}
.doc-content h2 .idx{
  font-size:14px;
  color:var(--primary);
  font-weight:800;
  letter-spacing:1px;
}
.doc-content h3{
  font-size:18px;
  font-weight:600;
  margin:26px 0 10px;
}
.doc-content p{color:#CBD6E4;font-size:15.5px;margin-bottom:14px;max-width:760px;}
.doc-content p.muted{color:var(--text-dim);font-size:14.5px;}

.card{
  border-radius:var(--radius-card);
  border:1px solid var(--line);
  background:var(--ink-700);
  box-shadow:var(--shadow-card);
  position:relative;
  overflow:hidden;
  transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.card::before{
  content:"";
  position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg, rgba(255,255,255,.18), transparent);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(23,224,168,.42);}
.card-pad{padding:24px;}

.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.check-card h3{
  font-size:17px;font-weight:700;margin-bottom:10px;display:flex;gap:10px;align-items:center;
}
.check-card h3 i{color:var(--primary);font-size:15px;}
.check-card p{font-size:14.5px;color:var(--text-dim);margin-bottom:0;}
.icon-ring{
  width:42px;height:42px;border-radius:12px;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(23,224,168,.12);
  border:1px solid rgba(23,224,168,.3);
  color:var(--primary);
  font-size:17px;
  margin-bottom:14px;
}

.feature-figure{
  border-radius:var(--radius-card);
  overflow:hidden;
  border:1px solid var(--line);
  position:relative;
  margin:24px 0;
}
.feature-figure img{width:100%;aspect-ratio:16/9;object-fit:cover;filter:brightness(.82);}
.feature-figure figcaption{
  position:absolute;left:0;right:0;bottom:0;
  padding:14px 18px;
  font-size:13px;
  color:#D7E2EF;
  background:linear-gradient(180deg, rgba(7,12,22,0), rgba(7,12,22,.88));
}

.step-list{counter-reset:step;margin-top:8px;}
.step-list li{
  position:relative;
  padding:0 0 22px 54px;
  border-left:1px solid var(--line);
  margin-left:16px;
}
.step-list li:last-child{border-left-color:transparent;padding-bottom:0;}
.step-list li::before{
  counter-increment:step;
  content:counter(step,decimal-leading-zero);
  position:absolute;left:-17px;top:-2px;
  width:34px;height:34px;
  border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  font-size:12.5px;font-weight:800;
  color:var(--primary);
  background:var(--ink-800);
  border:1px solid rgba(23,224,168,.4);
  box-shadow:0 0 0 4px rgba(7,12,22,1);
}
.step-list strong{display:block;font-size:16px;font-weight:700;margin-bottom:4px;}
.step-list span{font-size:14.5px;color:var(--text-dim);}

.table-wrap{
  overflow-x:auto;
  border-radius:var(--radius-card);
  border:1px solid var(--line);
  background:var(--ink-700);
  margin:22px 0;
  -webkit-overflow-scrolling:touch;
}
table.data-table{
  width:100%;
  min-width:620px;
  border-collapse:collapse;
  font-size:14.5px;
}
.data-table th,.data-table td{
  padding:14px 18px;
  text-align:left;
  border-bottom:1px solid var(--line);
}
.data-table th{
  background:rgba(255,255,255,.04);
  font-weight:700;
  font-size:14px;
  color:var(--text);
  white-space:nowrap;
}
.data-table td{color:var(--text-dim);}
.data-table tbody tr:hover td{background:rgba(23,224,168,.05);color:var(--text);}
.data-table tbody tr:last-child td{border-bottom:0;}
.data-table td .pill{
  display:inline-block;padding:3px 10px;border-radius:999px;
  font-size:12.5px;
  border:1px solid rgba(23,224,168,.35);
  background:rgba(23,224,168,.1);
  color:var(--primary);
}
.data-table td .pill.warn{
  border-color:rgba(255,92,92,.4);
  background:rgba(255,92,92,.1);
  color:#FF8F8F;
}

.quote-block{
  border-left:3px solid var(--primary);
  background:rgba(23,224,168,.06);
  border-radius:0 12px 12px 0;
  padding:18px 22px;
  margin:22px 0;
  font-size:15px;
  color:#D5E1EF;
  line-height:1.85;
}
.quote-block strong{color:var(--primary);}

.faq-wrap{
  border-radius:999px 18px 18px 18px;
  border:1px solid var(--line);
  background:var(--ink-700);
  overflow:hidden;
}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:last-child{border-bottom:0;}
.faq-q{
  width:100%;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;
  background:transparent;
  border:0;
  text-align:left;
  color:var(--text);
  font-size:17px;
  font-weight:600;
  cursor:pointer;
  position:relative;
  transition:background-color .2s ease,color .2s ease,padding-left .2s ease;
}
.faq-q:hover{background:rgba(255,255,255,.035);color:var(--primary);}
.faq-q.is-open{color:var(--primary);padding-left:27px;}
.faq-q.is-open::before{
  content:"";
  position:absolute;left:0;top:14px;bottom:14px;
  width:3px;border-radius:0 3px 3px 0;
  background:var(--primary);
  box-shadow:0 0 14px rgba(23,224,168,.75);
}
.faq-q .sign{
  flex:0 0 auto;
  width:28px;height:28px;
  border-radius:8px;
  border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:13px;color:var(--primary);
  transition:transform .25s ease, background-color .25s ease;
}
.faq-q.is-open .sign{transform:rotate(90deg);background:rgba(23,224,168,.12);}
.faq-a{
  display:none;
  padding:0 24px 20px 27px;
  font-size:15px;
  line-height:1.85;
  color:var(--text-dim);
}
.faq-item.is-open .faq-a{display:block;}

.related-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;}
.related-card{
  display:flex;gap:16px;align-items:flex-start;
  padding:22px;
  border-radius:var(--radius-card);
  border:1px solid var(--line);
  background:var(--ink-700);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  box-shadow:var(--shadow-card);
}
.related-card:hover{transform:translateY(-4px);border-color:rgba(23,224,168,.45);box-shadow:var(--shadow-hover);}
.related-card .icon-ring{margin-bottom:0;}
.related-card h3{font-size:16.5px;font-weight:700;margin-bottom:6px;}
.related-card p{font-size:14px;color:var(--text-dim);margin-bottom:8px;}
.related-card .go{font-size:13.5px;color:var(--primary);font-weight:600;display:inline-flex;gap:6px;align-items:center;}
.related-card:hover .go i{transform:translateX(4px);}
.related-card .go i{transition:transform .2s ease;}

.cta-band{
  position:relative;
  border-radius:var(--radius-glass);
  border:1px solid rgba(23,224,168,.32);
  background:
    radial-gradient(680px 240px at 12% 0%, rgba(23,224,168,.18), transparent 66%),
    linear-gradient(150deg, rgba(255,255,255,.06), rgba(255,255,255,.015));
  padding:44px;
  display:grid;
  grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);
  gap:32px;
  align-items:center;
  box-shadow:var(--shadow-card);
}
.cta-band h2{font-size:clamp(22px,2.4vw,29px);font-weight:700;line-height:1.35;margin-bottom:12px;}
.cta-band p{color:var(--text-dim);font-size:15px;max-width:560px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end;}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:var(--section-gap);
  background:#050912;
  border-top:1px solid transparent;
  position:relative;
  padding-top:64px;
}
.site-footer::before{
  content:"";
  position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg, transparent, rgba(23,224,168,.7), transparent);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1.1fr 1.3fr;
  gap:40px;
  padding-bottom:48px;
}
.footer-col h3{
  font-size:15px;
  font-weight:700;
  margin-bottom:18px;
  letter-spacing:.5px;
}
.footer-brand p{
  margin-top:18px;
  font-size:14px;
  color:var(--text-dim);
  line-height:1.9;
  max-width:420px;
}
.footer-links{display:flex;flex-direction:column;gap:11px;}
.footer-links a{
  font-size:14px;
  color:var(--text-dim);
  transition:color .2s ease,transform .2s ease;
  display:inline-block;
}
.footer-links a:hover{color:var(--primary);transform:translateX(3px);}
.footer-info{display:flex;flex-direction:column;gap:12px;}
.footer-info li{display:flex;gap:10px;font-size:14px;color:var(--text-dim);line-height:1.7;}
.footer-info i{color:var(--primary);font-size:13px;margin-top:6px;}
.footer-bottom{
  border-top:1px solid var(--line);
  padding:20px 0 26px;
  text-align:center;
  font-size:13px;
  color:var(--text-dim);
}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;
  right:24px;bottom:28px;
  width:46px;height:46px;
  border-radius:50%;
  border:1px solid rgba(23,224,168,.6);
  background:rgba(7,12,22,.85);
  color:var(--primary);
  display:flex;align-items:center;justify-content:center;
  font-size:15px;
  cursor:pointer;
  opacity:0;visibility:hidden;
  transform:translateY(10px);
  transition:opacity .25s ease, transform .25s ease, visibility .25s ease, box-shadow .25s ease;
  box-shadow:0 0 18px rgba(23,224,168,.22);
  z-index:70;
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:rgba(23,224,168,.14);box-shadow:0 0 26px rgba(23,224,168,.4);}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  :root{--section-gap:64px;}
  .container{padding-left:24px;padding-right:24px;}
  .header-inner{height:64px;gap:16px;}
  .main-nav{
    position:fixed;
    top:64px;left:0;right:0;
    flex-direction:column;
    align-items:stretch;
    gap:2px;
    padding:16px 24px 24px;
    background:rgba(7,12,22,.98);
    border-bottom:1px solid var(--line);
    box-shadow:0 20px 40px rgba(0,0,0,.5);
    transform:translateY(-120%);
    transition:transform .3s ease;
    z-index:55;
  }
  .main-nav.is-open{transform:translateY(0);}
  .nav-link{padding:14px 8px;font-size:16px;border-radius:10px;}
  .nav-link::after{display:none;}
  .nav-link.is-active{background:rgba(23,224,168,.1);}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;}
  .header-actions .btn-outline{display:none;}
  .cat-hero-grid{grid-template-columns:1fr;gap:32px;}
  .doc-layout{grid-template-columns:1fr;gap:32px;}
  .toc{position:relative;top:auto;}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr));}
  .cta-band{grid-template-columns:1fr;padding:34px;}
  .cta-actions{justify-content:flex-start;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:768px){
  :root{--section-gap:56px;}
  .cat-hero{padding:44px 0 40px;}
  .grid-3{grid-template-columns:1fr;}
  .grid-2{grid-template-columns:1fr;}
  .related-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .site-footer{padding-top:48px;}
}
@media (max-width:520px){
  .container{padding-left:20px;padding-right:20px;}
  .brand-text em{font-size:11px;letter-spacing:1px;}
  .cat-hero h1{font-size:30px;}
  .btn{width:100%;}
  .header-actions .btn-primary{width:auto;padding:11px 16px;font-size:14px;}
  .cta-actions{flex-direction:column;}
  .cta-actions .btn{width:100%;}
  .doc-content h2{display:block;}
  .doc-content h2 .idx{display:block;margin-bottom:6px;}
  .faq-q{font-size:15.5px;padding:18px;}
  .toc{padding:18px 16px;}
  .to-top{right:16px;bottom:18px;}
}