/* roulang page: index */
:root{
  --ink-950:#04141A;
  --ink-900:#06191F;
  --ink-850:#0A2229;
  --ink-800:#0E2A33;
  --line-soft:rgba(255,255,255,.08);
  --line-brand:rgba(18,165,148,.28);
  --brand-600:#0F8F81;
  --brand-500:#12A594;
  --brand-300:#5FD8C6;
  --accent-500:#F0A93B;
  --text-1:#E6F1F2;
  --text-2:#9FB4B8;
  --text-3:#6C868C;
  --light-bg:#F3F7F6;
  --light-card:#FFFFFF;
  --light-text:#0B262C;
  --light-sub:#516A6F;
  --radius-card:16px;
  --radius-glass:20px;
  --radius-btn:12px;
  --shadow-card:0 2px 8px rgba(4,20,26,.20);
  --shadow-hover:0 18px 44px rgba(4,20,26,.38);
  --glow-amber:0 0 0 1px rgba(240,169,59,.35),0 10px 30px rgba(240,169,59,.22);
  --glow-brand:0 0 0 1px rgba(18,165,148,.28);
  --ease:.25s cubic-bezier(.2,.7,.3,1);
  --maxw:1220px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--text-1);
  font-family:"HarmonyOS Sans","PingFang SC","Microsoft YaHei","Noto Sans SC",Inter,system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--brand-300);text-decoration:none;transition:color var(--ease);}
a:hover{color:var(--brand-500);}
button,input,textarea,select{font:inherit;color:inherit;}
h1,h2,h3,h4,h5{margin:0;color:var(--text-1);}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand-300);outline-offset:2px;border-radius:6px;}
.container-x{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px;}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--ink-950);border-bottom:1px solid var(--line-soft);font-size:13px;}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:34px;}
.topbar-site{display:flex;align-items:center;gap:8px;color:var(--text-3);letter-spacing:.02em;}
.topbar-site i{color:var(--brand-500);}
.topbar-note{color:var(--text-3);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.topbar-actions{display:flex;align-items:center;gap:18px;}
.topbar-actions a{color:var(--text-2);font-size:13px;}
.topbar-actions a:hover{color:var(--brand-300);}

/* ---------- 主导航 ---------- */
.site-header{position:sticky;top:0;z-index:1040;background:rgba(6,25,31,.92);border-bottom:1px solid var(--line-soft);transition:background var(--ease),backdrop-filter var(--ease),border-color var(--ease);}
.site-header.is-scrolled{background:rgba(12,42,51,.72);backdrop-filter:blur(12px) saturate(140%);-webkit-backdrop-filter:blur(12px) saturate(140%);border-bottom-color:var(--line-brand);}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:72px;}
.brand{display:flex;align-items:center;gap:10px;color:var(--text-1);font-weight:700;letter-spacing:.04em;font-size:19px;}
.brand:hover{color:var(--text-1);}
.brand-mark{width:34px;height:34px;border-radius:10px;display:grid;place-items:center;background:linear-gradient(140deg,var(--brand-500),var(--brand-600));box-shadow:var(--glow-brand);color:#04141A;font-size:15px;font-weight:800;}
.brand small{display:block;font-size:11px;letter-spacing:.16em;color:var(--text-3);font-weight:600;text-transform:uppercase;}
.main-nav{display:flex;align-items:center;gap:4px;}
.main-nav .nav-item{position:relative;}
.main-nav .nav-link{display:block;padding:10px 14px;font-size:15px;color:var(--text-2);font-weight:500;border-radius:10px;transition:color var(--ease),background var(--ease);}
.main-nav .nav-link:hover{color:var(--text-1);background:rgba(18,165,148,.10);}
.main-nav .nav-link.active{color:var(--text-1);}
.main-nav .nav-link.active::after{content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;background:var(--brand-500);}
.nav-right{display:flex;align-items:center;gap:12px;}
.nav-toggle{display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line-soft);background:rgba(255,255,255,.03);color:var(--text-1);}
.mobile-drawer{display:none;}
.mobile-drawer.show{display:block;}
.mobile-drawer .drawer-inner{background:var(--ink-850);border-top:1px solid var(--line-soft);padding:10px 0 18px;}
.mobile-drawer a{display:flex;align-items:center;justify-content:space-between;padding:14px 24px;font-size:16px;color:var(--text-1);border-bottom:1px solid var(--line-soft);}
.mobile-drawer a:last-child{border-bottom:0;}
.mobile-drawer a.active{color:var(--brand-300);box-shadow:inset 3px 0 0 var(--accent-500);}
.mobile-drawer a i{color:var(--text-3);font-size:13px;}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:none;border-radius:var(--radius-btn);font-weight:600;letter-spacing:.02em;transition:transform var(--ease),box-shadow var(--ease),background var(--ease),color var(--ease),filter var(--ease);cursor:pointer;text-align:center;}
.btn:focus-visible{outline:2px solid var(--brand-300);outline-offset:2px;}
.btn-sm{padding:0 16px;height:36px;font-size:14px;}
.btn-md{padding:0 22px;height:48px;font-size:15px;}
.btn-lg{padding:0 28px;height:54px;font-size:16px;}
.btn-block{width:100%;}
.btn-amber{background:var(--accent-500);color:#231604;box-shadow:var(--glow-amber);}
.btn-amber:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 0 0 1px rgba(240,169,59,.45),0 16px 38px rgba(240,169,59,.30);color:#231604;}
.btn-ghost{background:transparent;color:var(--brand-300);border:1px solid var(--line-brand);}
.btn-ghost:hover{background:rgba(18,165,148,.10);color:var(--brand-300);transform:translateY(-2px);}
.btn-plain{background:transparent;color:var(--text-2);padding:0;height:auto;}
.btn-plain:hover{color:var(--brand-300);}
.btn-plain i{transition:transform var(--ease);}
.btn-plain:hover i{transform:translateX(4px);}
.btn-line{background:transparent;color:var(--light-text);border:1px solid rgba(11,38,44,.18);}
.btn-line:hover{background:rgba(11,38,44,.06);color:var(--light-text);}

/* ---------- 通用板块 ---------- */
.section{padding:104px 0;}
.section-alt{background:var(--ink-850);}
.section-light{background:var(--light-bg);color:var(--light-text);}
.section-light h1,.section-light h2,.section-light h3,.section-light h4{color:var(--light-text);}
.eyebrow{display:inline-block;font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--brand-300);font-weight:700;margin-bottom:12px;}
.section-head{max-width:760px;margin-bottom:48px;}
.section-head h2{font-size:clamp(24px,3vw,36px);font-weight:600;line-height:1.25;}
.section-head .section-sub{margin-top:12px;color:var(--text-2);font-size:15px;max-width:640px;}
.section-light .section-head .section-sub{color:var(--light-sub);}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.section-head.center .section-sub{margin-left:auto;margin-right:auto;}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:88px 0 96px;background:var(--ink-900);}
.hero-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.png');background-size:cover;background-position:center;opacity:.30;}
.hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(4,20,26,.96) 0%,rgba(6,25,31,.86) 48%,rgba(6,25,31,.62) 100%);}
.hero-grid-line{position:absolute;inset:0;background-image:linear-gradient(rgba(18,165,148,.08) 1px,transparent 1px),linear-gradient(90deg,rgba(18,165,148,.08) 1px,transparent 1px);background-size:64px 64px;mask-image:radial-gradient(circle at 78% 24%,#000 0%,transparent 68%);-webkit-mask-image:radial-gradient(circle at 78% 24%,#000 0%,transparent 68%);}
.hero .container-x{position:relative;z-index:2;}
.hero-title{font-size:clamp(30px,4.6vw,52px);font-weight:700;line-height:1.18;letter-spacing:-.01em;margin-bottom:20px;}
.hero-title span{color:var(--brand-300);}
.hero-sub{font-size:17px;color:var(--text-2);max-width:560px;margin-bottom:30px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:32px;}
.trust-row{display:flex;flex-wrap:wrap;gap:10px;}
.trust-item{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--text-2);background:rgba(255,255,255,.04);border:1px solid var(--line-soft);border-radius:999px;padding:7px 14px;}
.trust-item i{color:var(--brand-500);}
.glass-card{background:rgba(12,42,51,.55);backdrop-filter:blur(12px) saturate(140%);-webkit-backdrop-filter:blur(12px) saturate(140%);border:1px solid var(--line-soft);border-radius:var(--radius-glass);padding:26px;box-shadow:var(--shadow-card);position:relative;overflow:hidden;}
.glass-card::before{content:"";position:absolute;left:0;right:0;top:0;height:1px;background:linear-gradient(90deg,transparent,rgba(255,255,255,.35),transparent);}
.glass-card .card-label{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--text-3);font-weight:700;margin-bottom:18px;}
.metric-list{display:grid;gap:18px;}
.metric{display:flex;align-items:baseline;justify-content:space-between;gap:12px;padding-bottom:16px;border-bottom:1px solid var(--line-soft);}
.metric:last-child{border-bottom:0;padding-bottom:0;}
.metric-num{font-size:38px;font-weight:700;font-variant-numeric:tabular-nums;color:var(--text-1);line-height:1;}
.metric-num em{font-style:normal;font-size:16px;color:var(--brand-300);margin-left:4px;}
.metric-txt{font-size:13px;color:var(--text-2);text-align:right;}
.hero-visual{margin-top:22px;border-radius:14px;overflow:hidden;border:1px solid var(--line-soft);}
.hero-visual img{width:100%;aspect-ratio:16/9;object-fit:cover;}

/* ---------- 价值主张带 ---------- */
.value-grid{display:grid;grid-template-columns:5fr 4fr 3fr;gap:24px;align-items:start;}
.card-solid{background:var(--ink-800);border:1px solid var(--line-soft);border-radius:var(--radius-card);padding:28px;box-shadow:var(--shadow-card);transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);height:100%;}
.card-solid:hover{transform:translateY(-4px);border-color:var(--line-brand);box-shadow:var(--shadow-hover);}
.card-icon{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;background:rgba(18,165,148,.14);border:1px solid var(--line-brand);color:var(--brand-300);font-size:18px;margin-bottom:18px;}
.card-solid h3{font-size:20px;font-weight:600;margin-bottom:10px;}
.card-solid h4{font-size:17px;font-weight:600;margin-bottom:8px;}
.card-solid p{font-size:14px;color:var(--text-2);line-height:1.8;}
.value-lead{padding:32px;}
.value-lead h3{font-size:23px;}
.value-points{margin-top:20px;display:grid;gap:12px;}
.value-points li{display:flex;gap:10px;font-size:14px;color:var(--text-2);}
.value-points i{color:var(--brand-500);margin-top:5px;font-size:12px;}
.value-side{display:grid;gap:24px;}
.value-side .card-solid:nth-child(2){margin-left:18px;}

/* ---------- 功能分组 ---------- */
.pills{display:flex;flex-wrap:wrap;gap:8px;border-bottom:1px solid var(--line-soft);margin-bottom:36px;}
.pill{background:transparent;border:0;padding:12px 18px;font-size:15px;font-weight:600;color:var(--text-2);position:relative;transition:color var(--ease);}
.pill::after{content:"";position:absolute;left:18px;right:18px;bottom:-1px;height:2px;border-radius:2px;background:transparent;transition:background var(--ease);}
.pill:hover{color:var(--text-1);}
.pill.active{color:var(--brand-300);}
.pill.active::after{background:var(--brand-500);}
.feature-matrix{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.feature-card{background:var(--ink-800);border:1px solid var(--line-soft);border-radius:var(--radius-card);padding:26px;transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);height:100%;}
.feature-card:hover{transform:translateY(-4px);border-color:var(--line-brand);box-shadow:var(--shadow-hover);}
.feature-card h4{font-size:17px;font-weight:600;margin-bottom:14px;display:flex;align-items:center;gap:10px;}
.feature-card h4 i{color:var(--brand-500);font-size:15px;}
.dot-list li{position:relative;padding-left:16px;font-size:14px;color:var(--text-2);line-height:1.9;}
.dot-list li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;background:var(--brand-500);}

/* ---------- 使用场景（浅色） ---------- */
.scene-wrap{display:grid;grid-template-columns:4fr 8fr;gap:32px;align-items:start;}
.scene-list{display:grid;gap:8px;}
.scene-item{text-align:left;background:transparent;border:0;border-left:3px solid transparent;padding:16px 18px;border-radius:0 12px 12px 0;transition:background var(--ease),border-color var(--ease);color:var(--light-text);cursor:pointer;}
.scene-item strong{display:block;font-size:16px;font-weight:600;margin-bottom:4px;}
.scene-item span{font-size:13px;color:var(--light-sub);}
.scene-item:hover{background:rgba(11,38,44,.05);}
.scene-item.active{border-left-color:var(--accent-500);background:rgba(11,38,44,.06);}
.scene-panel{background:var(--light-card);border-radius:var(--radius-card);border:1px solid rgba(11,38,44,.08);box-shadow:0 12px 30px rgba(11,38,44,.08);overflow:hidden;}
.scene-panel img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.scene-panel-body{padding:28px;}
.scene-panel-body h3{font-size:20px;margin-bottom:12px;}
.scene-panel-body p{font-size:15px;color:var(--light-sub);margin-bottom:18px;}
.scene-panel-body .dot-list li{color:var(--light-sub);}
.scene-panel-body .dot-list li::before{background:var(--brand-600);}
.scene-pane{display:none;}
.scene-pane.active{display:block;}

/* ---------- 成功案例 ---------- */
.case-row{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;margin-bottom:40px;}
.case-row.reverse .case-media{order:2;}
.case-media{border-radius:14px;overflow:hidden;border:1px solid var(--line-soft);}
.case-media img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .5s cubic-bezier(.2,.7,.3,1);}
.case-row:hover .case-media img{transform:scale(1.03);}
.case-body h3{font-size:22px;font-weight:600;margin:14px 0 12px;line-height:1.45;}
.case-body p{font-size:15px;color:var(--text-2);margin-bottom:18px;}
.tag{display:inline-block;font-size:12px;border-radius:999px;padding:5px 12px;background:rgba(18,165,148,.12);border:1px solid var(--line-brand);color:var(--brand-300);font-weight:600;}
.tag-amber{background:rgba(240,169,59,.12);border-color:rgba(240,169,59,.35);color:var(--accent-500);}
.stats-band{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:16px;padding:32px;border-radius:var(--radius-card);background:var(--ink-800);border:1px solid var(--line-soft);}
.stat{text-align:center;}
.stat b{display:block;font-size:34px;font-weight:700;font-variant-numeric:tabular-nums;color:var(--text-1);line-height:1.1;}
.stat b em{font-style:normal;font-size:15px;color:var(--brand-300);margin-left:3px;}
.stat span{display:block;font-size:13px;color:var(--text-3);margin-top:6px;}

/* ---------- 价格 ---------- */
.toggle-wrap{display:inline-flex;gap:4px;background:rgba(11,38,44,.06);border:1px solid rgba(11,38,44,.10);border-radius:999px;padding:4px;margin-bottom:36px;}
.toggle-btn{border:0;background:transparent;padding:8px 20px;border-radius:999px;font-size:14px;font-weight:600;color:var(--light-sub);transition:all var(--ease);}
.toggle-btn.active{background:var(--light-card);color:var(--light-text);box-shadow:0 2px 8px rgba(11,38,44,.10);}
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch;}
.price-card{background:var(--light-card);border:1px solid rgba(11,38,44,.10);border-radius:var(--radius-card);padding:30px;display:flex;flex-direction:column;transition:transform var(--ease),box-shadow var(--ease);position:relative;}
.price-card:hover{transform:translateY(-4px);box-shadow:0 20px 44px rgba(11,38,44,.14);}
.price-card.featured{background:rgba(12,42,51,.55);backdrop-filter:blur(12px) saturate(140%);-webkit-backdrop-filter:blur(12px) saturate(140%);border:1px solid rgba(240,169,59,.45);box-shadow:0 18px 44px rgba(11,38,44,.18);transform:scale(1.06);z-index:2;}
.price-card.featured h3,.price-card.featured .price-num,.price-card.featured .price-list li,.price-card.featured .price-note{color:var(--text-1);}
.price-card.featured .price-list li.off{color:var(--text-3);}
.price-badge{position:absolute;top:-12px;right:24px;font-size:12px;font-weight:700;letter-spacing:.06em;background:var(--accent-500);color:#231604;border-radius:999px;padding:5px 14px;}
.price-card h3{font-size:18px;font-weight:600;margin-bottom:6px;color:var(--light-text);}
.price-note{font-size:13px;color:var(--light-sub);margin-bottom:20px;}
.price-num{font-size:42px;font-weight:700;font-variant-numeric:tabular-nums;color:var(--light-text);line-height:1.1;}
.price-num small{font-size:14px;font-weight:600;color:var(--light-sub);margin-left:6px;}
.price-scope{font-size:14px;color:var(--light-sub);margin:12px 0 22px;padding-bottom:20px;border-bottom:1px solid rgba(11,38,44,.10);}
.price-card.featured .price-scope{border-bottom-color:var(--line-soft);color:var(--text-2);}
.price-list{display:grid;gap:12px;margin-bottom:28px;flex:1;}
.price-list li{display:flex;gap:10px;font-size:14px;color:var(--light-sub);}
.price-list li i{font-size:12px;margin-top:5px;}
.price-list li i.fa-check{color:var(--brand-600);}
.price-card.featured .price-list li i.fa-check{color:var(--brand-300);}
.price-list li i.fa-minus{color:rgba(11,38,44,.28);}
.price-list li.off{color:rgba(11,38,44,.42);}

/* ---------- 最新信息 ---------- */
.news-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:40px;}
.news-grid{display:grid;grid-template-columns:7fr 5fr;gap:24px;}
.news-lead{background:var(--ink-800);border:1px solid var(--line-soft);border-radius:var(--radius-card);overflow:hidden;display:flex;flex-direction:column;transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);height:100%;}
.news-lead:hover,.news-card:hover{transform:translateY(-4px);border-color:var(--line-brand);box-shadow:var(--shadow-hover);}
.media-16x9{position:relative;overflow:hidden;}
.media-16x9 img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.badge-overlay{position:absolute;top:14px;left:14px;}
.news-lead-body{padding:26px;display:flex;flex-direction:column;flex:1;}
.news-lead-body h3{font-size:21px;font-weight:600;line-height:1.45;margin-bottom:12px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-lead-body h3 a{color:var(--text-1);}
.news-lead-body h3 a:hover{color:var(--brand-300);}
.news-lead-body p{font-size:14px;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:18px;}
.news-side{display:grid;gap:24px;}
.news-card{background:var(--ink-800);border:1px solid var(--line-soft);border-radius:var(--radius-card);overflow:hidden;display:grid;grid-template-columns:40% 60%;transition:transform var(--ease),border-color var(--ease),box-shadow var(--ease);}
.news-card .news-thumb{overflow:hidden;}
.news-card .news-thumb img{width:100%;height:100%;min-height:148px;object-fit:cover;}
.news-card .news-body{padding:20px;}
.news-card h4{font-size:16px;font-weight:600;line-height:1.5;margin:10px 0 8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-card h4 a{color:var(--text-1);}
.news-card h4 a:hover{color:var(--brand-300);}
.news-card p{font-size:13px;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:12px;}
.meta{display:flex;align-items:center;gap:14px;font-size:13px;color:var(--text-3);margin-top:auto;}
.meta i{margin-right:5px;font-size:12px;}
.empty-state{background:var(--ink-800);border:1px dashed var(--line-soft);border-radius:var(--radius-card);padding:56px 24px;text-align:center;color:var(--text-2);}
.empty-state i{font-size:26px;color:var(--brand-500);margin-bottom:14px;display:block;}
.empty-state a{display:inline-block;margin-top:10px;font-size:14px;}

/* ---------- FAQ ---------- */
.faq-wrap{display:grid;grid-template-columns:4fr 8fr;gap:40px;align-items:start;}
.accordion-item{background:transparent;border:0;border-bottom:1px solid var(--line-soft);}
.accordion-button{background:transparent;color:var(--text-1);font-size:16px;font-weight:600;padding:20px 44px 20px 18px;border-radius:0;box-shadow:none !important;border-left:3px solid transparent;transition:border-color var(--ease),color var(--ease);}
.accordion-button::after{display:none;}
.accordion-button .faq-icon{position:absolute;right:16px;top:50%;transform:translateY(-50%);color:var(--brand-300);transition:transform var(--ease);font-size:14px;}
.accordion-button:not(.collapsed){background:transparent;color:var(--text-1);border-left-color:var(--brand-500);}
.accordion-button:not(.collapsed) .faq-icon{transform:translateY(-50%) rotate(45deg);}
.accordion-button:hover{color:var(--brand-300);}
.accordion-body{padding:0 24px 22px 21px;color:var(--text-2);font-size:15px;}

/* ---------- 底部 CTA ---------- */
.cta-band{position:relative;overflow:hidden;background:var(--ink-950);padding:88px 0;}
.cta-band::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(18,165,148,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(18,165,148,.07) 1px,transparent 1px);background-size:48px 48px;}
.cta-inner{position:relative;z-index:2;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;}
.cta-inner h2{font-size:clamp(22px,2.6vw,32px);font-weight:600;max-width:640px;line-height:1.35;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-950);border-top:1px solid var(--line-brand);padding:64px 0 0;}
.footer-grid{display:grid;grid-template-columns:5fr 3fr 3fr;gap:40px;padding-bottom:48px;}
.footer-brand p{font-size:14px;color:var(--text-2);margin:16px 0 20px;max-width:340px;}
.footer-contact{display:grid;gap:8px;font-size:13px;color:var(--text-3);}
.footer-contact i{color:var(--brand-500);width:16px;}
.footer-col h4{font-size:14px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--text-1);margin-bottom:18px;}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{font-size:14px;color:var(--text-2);}
.footer-col a:hover{color:var(--brand-300);}
.footer-bottom{border-top:1px solid var(--line-soft);padding:22px 0;display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;font-size:13px;color:var(--text-3);}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .value-grid{grid-template-columns:1fr 1fr;}
  .value-side{grid-column:span 2;grid-template-columns:1fr 1fr;}
  .value-side .card-solid:nth-child(2){margin-left:0;}
  .feature-matrix{grid-template-columns:repeat(2,1fr);}
  .news-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr 1fr;}
}
@media (max-width:991.98px){
  .section{padding:72px 0;}
  .hero{padding:64px 0 72px;}
  .main-nav{display:none;}
  .nav-toggle{display:grid;place-items:center;}
  .nav-right .btn-amber{display:none;}
  .scene-wrap,.faq-wrap{grid-template-columns:1fr;gap:28px;}
  .case-row{grid-template-columns:1fr;gap:24px;}
  .case-row.reverse .case-media{order:0;}
  .price-grid{grid-template-columns:1fr;gap:20px;}
  .price-card.featured{transform:none;}
  .stats-band{grid-template-columns:repeat(2,1fr);}
  .topbar-note{display:none;}
}
@media (max-width:767.98px){
  .value-grid{grid-template-columns:1fr;}
  .value-side{grid-column:span 1;grid-template-columns:1fr;}
  .feature-matrix{grid-template-columns:1fr;}
  .news-card{grid-template-columns:1fr;}
  .news-card .news-thumb img{min-height:180px;aspect-ratio:16/9;}
  .footer-grid{grid-template-columns:1fr;-webkit-gap:32px;gap:32px;}
  .glass-card{background:rgba(12,42,51,.92);backdrop-filter:none;-webkit-backdrop-filter:none;}
  .price-card.featured{background:rgba(12,42,51,.94);backdrop-filter:none;-webkit-backdrop-filter:none;}
}
@media (max-width:575.98px){
  .container-x{padding:0 16px;}
  .section{padding:56px 0;}
  .hero{padding:52px 0 60px;}
  .hero-actions .btn{width:100%;}
  .stats-band{grid-template-columns:1fr;gap:18px;padding:24px;}
  .metric-num{font-size:30px;}
  .price-num{font-size:34px;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
}

/* roulang page: article */
:root{
  --ink-950:#04141A;
  --ink-900:#06191F;
  --ink-850:#0A2229;
  --ink-800:#0E2A33;
  --line-soft:rgba(255,255,255,.08);
  --line-brand:rgba(18,165,148,.28);
  --brand-600:#0F8F81;
  --brand-500:#12A594;
  --brand-300:#5FD8C6;
  --accent-500:#F0A93B;
  --text-1:#E6F1F2;
  --text-2:#9FB4B8;
  --text-3:#6C868C;
  --light-bg:#F3F7F6;
  --light-card:#FFFFFF;
  --light-text:#0B262C;
  --radius-card:16px;
  --radius-btn:11px;
  --radius-pill:999px;
  --shadow-card:0 2px 8px rgba(4,20,26,.20);
  --shadow-hover:0 18px 44px rgba(4,20,26,.38);
  --shadow-glow:0 0 0 1px rgba(240,169,59,.35),0 10px 30px rgba(240,169,59,.22);
  --ease:cubic-bezier(.2,.7,.3,1);
  --t:.25s var(--ease);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--text-1);
  font-family:"HarmonyOS Sans","PingFang SC","Microsoft YaHei","Noto Sans SC",Inter,system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color var(--t),background-color var(--t),border-color var(--t),opacity var(--t)}
button,input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4,h5{margin:0;font-weight:600;line-height:1.25;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand-300);outline-offset:2px;border-radius:4px}
::selection{background:rgba(18,165,148,.35);color:#fff}

.container-x{width:100%;max-width:1220px;margin:0 auto;padding:0 24px}

/* ---------- 顶部信息条 ---------- */
.topbar{background:var(--ink-950);border-bottom:1px solid var(--line-soft)}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;height:34px;font-size:13px;color:var(--text-3)}
.topbar-domain{display:inline-flex;align-items:center;gap:8px;color:var(--text-2);letter-spacing:.02em}
.topbar-domain i{color:var(--brand-500);font-size:12px}
.topbar-note{color:var(--text-3);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar-actions{display:flex;align-items:center;gap:14px;flex-shrink:0}
.topbar-link{color:var(--text-2)}
.topbar-link:hover{color:var(--brand-300)}
.topbar-btn{
  display:inline-flex;align-items:center;height:22px;padding:0 10px;border-radius:var(--radius-pill);
  border:1px solid var(--line-brand);color:var(--brand-300);font-size:12px;
}
.topbar-btn:hover{background:rgba(18,165,148,.12);color:#fff}

/* ---------- 主导航 ---------- */
.nav-wrap{
  position:sticky;top:0;z-index:1030;
  background:var(--ink-900);
  border-bottom:1px solid var(--line-soft);
  transition:background var(--t),box-shadow var(--t),border-color var(--t);
}
.nav-wrap.is-scrolled{
  background:rgba(6,25,31,.82);
  -webkit-backdrop-filter:blur(12px) saturate(140%);
  backdrop-filter:blur(12px) saturate(140%);
  border-bottom-color:var(--line-brand);
  box-shadow:0 12px 34px rgba(4,20,26,.42);
}
.nav-inner{display:flex;align-items:center;gap:20px;height:72px}
.brand{display:inline-flex;align-items:center;gap:11px;flex-shrink:0}
.brand-mark{
  width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(145deg,var(--brand-500),var(--brand-600));
  color:#03191c;font-weight:700;font-size:19px;
  box-shadow:0 0 0 1px rgba(18,165,148,.35),0 8px 20px rgba(18,165,148,.25);
}
.brand-text{display:flex;flex-direction:column;line-height:1.05;font-weight:700;font-size:18px;letter-spacing:.04em;color:var(--text-1)}
.brand-text small{font-size:10px;letter-spacing:.22em;color:var(--text-3);font-weight:500;margin-top:3px}
.main-nav{display:flex;align-items:center;gap:2px;margin:0 auto}
.nav-link{
  position:relative;display:inline-block;padding:9px 14px;border-radius:9px;
  font-size:15px;color:var(--text-2);
}
.nav-link:hover{color:var(--text-1);background:rgba(18,165,148,.09)}
.nav-link.active{color:var(--text-1);font-weight:600}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  border-radius:2px;background:var(--brand-500);
}
.nav-right{display:flex;align-items:center;gap:12px;flex-shrink:0}
.btn-brand{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--radius-btn);border:0;
  background:var(--accent-500);color:#2A1A05;font-weight:600;font-size:15px;letter-spacing:.02em;
  box-shadow:var(--shadow-glow);cursor:pointer;
  transition:transform var(--t),box-shadow var(--t),filter var(--t);
}
.btn-brand:hover{filter:brightness(1.06);transform:translateY(-2px);box-shadow:0 0 0 1px rgba(240,169,59,.45),0 16px 38px rgba(240,169,59,.3);color:#2A1A05}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--radius-btn);
  background:transparent;border:1px solid var(--line-brand);color:var(--brand-300);
  font-weight:600;font-size:15px;cursor:pointer;transition:all var(--t);
}
.btn-ghost:hover{background:rgba(18,165,148,.12);color:#fff;transform:translateY(-2px)}
.btn-text{display:inline-flex;align-items:center;gap:8px;color:var(--brand-300);font-weight:600;font-size:14px}
.btn-text i{transition:transform var(--t)}
.btn-text:hover i{transform:translateX(4px)}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line-soft);
  background:var(--ink-850);color:var(--text-1);cursor:pointer;
}

/* ---------- 面包屑 ---------- */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:9px;font-size:13px;color:var(--text-3);padding-top:26px}
.crumb a{color:var(--text-2)}
.crumb a:hover{color:var(--brand-300)}
.crumb .sep{color:rgba(108,134,140,.6)}
.crumb .cur{color:var(--text-3);max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- 文章头部 ---------- */
.article-hero{padding:22px 0 34px;border-bottom:1px solid var(--line-soft);position:relative}
.article-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(18,165,148,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(18,165,148,.05) 1px,transparent 1px);
  background-size:56px 56px;
  -webkit-mask-image:radial-gradient(ellipse at 12% 40%,#000,transparent 72%);
  mask-image:radial-gradient(ellipse at 12% 40%,#000,transparent 72%);
}
.article-hero .container-x{position:relative}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.12em;text-transform:uppercase;
  color:var(--brand-300);padding:5px 12px;border-radius:var(--radius-pill);
  background:rgba(18,165,148,.12);border:1px solid var(--line-brand);margin-bottom:18px;
}
.article-head h1{
  font-size:clamp(26px,3.4vw,42px);font-weight:700;line-height:1.22;letter-spacing:-.01em;
  max-width:920px;margin-bottom:18px;
}
.cat-pill{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:var(--radius-pill);
  background:rgba(240,169,59,.12);border:1px solid rgba(240,169,59,.32);color:var(--accent-500);
  font-size:12px;font-weight:600;
}
.cat-pill.on-dark{background:rgba(18,165,148,.12);border-color:var(--line-brand);color:var(--brand-300)}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;font-size:13px;color:var(--text-3)}
.meta-row span{display:inline-flex;align-items:center;gap:7px}
.meta-row i{color:var(--brand-500);font-size:12px}
.meta-divider{width:1px;height:12px;background:var(--line-soft)}

/* ---------- 主体栅格 ---------- */
.article-main{padding:44px 0 72px}
.article-body{
  max-width:800px;font-size:16.5px;line-height:1.85;color:var(--text-1);
}
.article-body>*:first-child{margin-top:0}
.article-body h2{
  font-size:24px;font-weight:600;margin:48px 0 16px;padding-left:14px;position:relative;scroll-margin-top:100px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.28em;bottom:.28em;width:3px;border-radius:3px;
  background:linear-gradient(180deg,var(--brand-300),var(--brand-600));
}
.article-body h3{font-size:20px;font-weight:600;margin:32px 0 12px;color:var(--text-1);scroll-margin-top:100px}
.article-body h4{font-size:17px;font-weight:600;margin:24px 0 10px;color:var(--brand-300)}
.article-body p{margin:0 0 1.25em;color:#D6E5E7}
.article-body strong{color:#fff;font-weight:600}
.article-body a{color:var(--brand-300);border-bottom:1px solid rgba(95,216,198,.4)}
.article-body a:hover{color:#fff;border-bottom-color:#fff}
.article-body ul,.article-body ol{margin:0 0 1.4em;padding-left:2px}
.article-body li{position:relative;padding-left:20px;margin-bottom:10px;color:#D6E5E7}
.article-body ul>li::before{
  content:"";position:absolute;left:2px;top:.68em;width:6px;height:6px;border-radius:1px;
  background:var(--brand-500);
}
.article-body ol{counter-reset:li}
.article-body ol>li{counter-increment:li}
.article-body ol>li::before{
  content:counter(li);position:absolute;left:0;top:.1em;
  width:16px;text-align:left;color:var(--brand-300);font-size:14px;font-weight:700;
}
.article-body blockquote{
  margin:26px 0;padding:18px 22px;border-left:3px solid var(--brand-500);
  background:var(--ink-850);border-radius:0 14px 14px 0;color:var(--text-2);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:14px;margin:26px auto;box-shadow:var(--shadow-card);outline:1px solid rgba(255,255,255,.06);outline-offset:-1px}
.article-body figure{margin:26px 0}
.article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px}
.article-body table{width:100%;border-collapse:collapse;margin:26px 0;font-size:15px}
.article-body thead th{background:var(--ink-850);color:var(--text-1);font-weight:600}
.article-body th,.article-body td{padding:12px 16px;text-align:left;border-bottom:1px solid rgba(255,255,255,.06);color:#D6E5E7}
.article-body hr{border:0;border-top:1px solid var(--line-soft);margin:36px 0}
.article-body code{background:var(--ink-850);border:1px solid var(--line-soft);border-radius:6px;padding:2px 6px;font-size:14px;color:var(--brand-300)}

.empty-state{
  border:1px dashed var(--line-brand);border-radius:var(--radius-card);
  background:var(--ink-850);padding:56px 24px;text-align:center;
}
.empty-state i{font-size:30px;color:var(--brand-500);margin-bottom:16px;display:block}
.empty-state p{color:var(--text-2);margin-bottom:18px}

/* ---------- 文章底部 ---------- */
.article-foot>section{margin-top:56px}
.foot-block-title{font-size:18px;font-weight:600;margin-bottom:18px;display:flex;align-items:center;gap:10px}
.foot-block-title::before{content:"";width:3px;height:16px;border-radius:3px;background:var(--brand-500)}
.tag-row{display:flex;flex-wrap:wrap;gap:10px}
.tag{
  display:inline-flex;align-items:center;gap:6px;height:30px;padding:0 14px;border-radius:var(--radius-pill);
  background:rgba(18,165,148,.10);border:1px solid var(--line-brand);color:var(--brand-300);font-size:13px;
}
.tag:hover{background:rgba(18,165,148,.2);color:#fff}
.pn-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.pn-card{
  display:block;padding:20px 22px;border-radius:var(--radius-card);
  background:var(--ink-800);border:1px solid var(--line-soft);box-shadow:var(--shadow-card);
  transition:transform var(--t),border-color var(--t),box-shadow var(--t);
}
.pn-card:hover{transform:translateY(-4px);border-color:var(--line-brand);box-shadow:var(--shadow-hover)}
.pn-label{display:flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.08em;color:var(--text-3);margin-bottom:10px}
.pn-label i{color:var(--brand-500)}
.pn-title{display:block;font-size:16px;font-weight:600;color:var(--text-1);line-height:1.5}
.pn-card:hover .pn-title{color:var(--brand-300)}
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.rel-card{
  display:block;border-radius:14px;overflow:hidden;background:var(--ink-800);
  border:1px solid var(--line-soft);transition:transform var(--t),border-color var(--t),box-shadow var(--t);
}
.rel-card:hover{transform:translateY(-4px);border-color:var(--line-brand);box-shadow:var(--shadow-hover)}
.rel-thumb{position:relative;aspect-ratio:16/10;overflow:hidden}
.rel-thumb img{width:100%;height:100%;object-fit:cover;outline:1px solid rgba(255,255,255,.06);outline-offset:-1px;transition:transform .5s var(--ease)}
.rel-card:hover .rel-thumb img{transform:scale(1.05)}
.rel-body{padding:14px 16px 16px}
.rel-cat{font-size:11px;letter-spacing:.1em;color:var(--brand-300);text-transform:uppercase}
.rel-title{font-size:15px;font-weight:600;line-height:1.55;margin-top:8px;color:var(--text-1);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-card:hover .rel-title{color:var(--brand-300)}

/* ---------- 侧栏 ---------- */
.side-sticky{position:sticky;top:96px;display:flex;flex-direction:column;gap:18px}
.side-card{
  background:var(--ink-850);border:1px solid var(--line-soft);border-radius:var(--radius-card);
  padding:22px;box-shadow:var(--shadow-card);
}
.side-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.side-head h3{font-size:15px;font-weight:600;display:flex;align-items:center;gap:9px}
.side-head h3 i{color:var(--brand-500);font-size:13px}
.toc-card{border-color:var(--line-brand)}
.toc-list{display:flex;flex-direction:column;gap:2px;max-height:340px;overflow-y:auto}
.toc-link{
  position:relative;display:block;padding:7px 10px 7px 14px;border-radius:8px;
  font-size:14px;color:var(--text-2);line-height:1.5;
}
.toc-link::before{
  content:"";position:absolute;left:0;top:9px;bottom:9px;width:2px;border-radius:2px;
  background:transparent;transition:background var(--t);
}
.toc-link:hover{color:var(--text-1);background:rgba(18,165,148,.08)}
.toc-link.is-active{color:var(--brand-300);background:rgba(18,165,148,.09)}
.toc-link.is-active::before{background:var(--accent-500)}
.toc-empty{font-size:13px;color:var(--text-3);line-height:1.7}
.toc-card.is-ready .toc-empty{display:none}
.consult-card{background:linear-gradient(160deg,var(--ink-800),var(--ink-850));border-color:var(--line-brand)}
.consult-card p{font-size:14px;color:var(--text-2);margin-bottom:16px;line-height:1.75}
.consult-list{display:flex;flex-direction:column;gap:9px;margin-bottom:18px}
.consult-list li{display:flex;gap:9px;font-size:13.5px;color:var(--text-2)}
.consult-list i{color:var(--brand-500);margin-top:4px;font-size:11px}
.side-cta{
  display:flex;align-items:center;justify-content:center;gap:8px;width:100%;height:44px;
  border-radius:var(--radius-btn);background:var(--accent-500);color:#2A1A05;font-weight:600;font-size:15px;
  box-shadow:var(--shadow-glow);transition:transform var(--t),filter var(--t);
}
.side-cta:hover{filter:brightness(1.06);transform:translateY(-2px);color:#2A1A05}
.side-link-list{display:flex;flex-direction:column}
.side-link-list a{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:11px 0;border-bottom:1px solid var(--line-soft);font-size:14px;color:var(--text-2);
}
.side-link-list a:last-child{border-bottom:0}
.side-link-list a i{font-size:11px;color:var(--text-3);transition:transform var(--t),color var(--t)}
.side-link-list a:hover{color:var(--brand-300)}
.side-link-list a:hover i{transform:translateX(4px);color:var(--brand-300)}

/* ---------- 底部 CTA ---------- */
.cta-band{position:relative;background:var(--ink-950);border-top:1px solid var(--line-brand);overflow:hidden}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(18,165,148,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(18,165,148,.06) 1px,transparent 1px);
  background-size:48px 48px;
  -webkit-mask-image:radial-gradient(ellipse at 50% 0%,#000,transparent 78%);
  mask-image:radial-gradient(ellipse at 50% 0%,#000,transparent 78%);
}
.cta-inner{position:relative;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:26px;padding:64px 0}
.cta-inner h2{font-size:clamp(22px,2.6vw,32px);font-weight:600;margin-bottom:10px}
.cta-inner p{color:var(--text-2);font-size:15px;max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-950);border-top:1px solid var(--line-brand);padding:60px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:44px;padding-bottom:44px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{font-size:14px;color:var(--text-2);max-width:400px;line-height:1.8;margin-bottom:20px}
.footer-contact{display:flex;flex-direction:column;gap:10px;font-size:13.5px;color:var(--text-3)}
.footer-contact span{display:flex;align-items:flex-start;gap:9px}
.footer-contact i{color:var(--brand-500);margin-top:5px;font-size:12px}
.footer-col h4{font-size:14px;font-weight:600;color:var(--text-1);margin-bottom:18px;letter-spacing:.04em}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{font-size:14px;color:var(--text-2)}
.footer-col a:hover{color:var(--brand-300)}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  padding:20px 0 26px;border-top:1px solid var(--line-soft);font-size:13px;color:var(--text-3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .main-nav{gap:0}
  .nav-link{padding:9px 10px;font-size:14px}
}
@media (max-width:991.98px){
  .container-x{padding:0 20px}
  .topbar-note{display:none}
  .nav-inner{height:64px;gap:14px}
  .nav-toggle{display:inline-grid;place-items:center}
  .main-nav{
    position:absolute;left:0;right:0;top:100%;
    flex-direction:column;align-items:stretch;gap:0;margin:0;
    background:var(--ink-900);border-bottom:1px solid var(--line-brand);
    padding:10px 20px 18px;display:none;
    box-shadow:0 24px 44px rgba(4,20,26,.5);
  }
  .nav-wrap.nav-open .main-nav{display:flex}
  .nav-link{padding:14px 6px;font-size:16px;border-bottom:1px solid var(--line-soft);border-radius:0}
  .nav-link.active::after{display:none}
  .nav-link.active{color:var(--brand-300)}
  .nav-link::after{content:"\f105";font-family:"Font Awesome 6 Free";font-weight:900;float:right;color:var(--text-3);font-size:13px}
  .nav-link.active::after{color:var(--brand-500)}
  .nav-right .btn-brand{display:none}
  .article-main{padding:34px 0 56px}
  .article-body{font-size:16px;max-width:100%}
  .side-sticky{position:static}
  .rel-grid{grid-template-columns:repeat(2,1fr)}
  .cta-inner{padding:52px 0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
  .footer-brand{grid-column:1/-1}
}
@media (max-width:575.98px){
  .container-x{padding:0 16px}
  .article-hero{padding:16px 0 26px}
  .article-head h1{font-size:24px}
  .crumb{padding-top:18px;font-size:12px}
  .crumb .cur{max-width:200px}
  .article-body h2{font-size:20px;margin-top:36px}
  .article-body h3{font-size:18px;margin-top:26px}
  .pn-grid{grid-template-columns:1fr}
  .rel-grid{grid-template-columns:1fr}
  .article-body table{display:block;overflow-x:auto;white-space:nowrap}
  .cta-actions{width:100%}
  .cta-actions .btn-brand,.cta-actions .btn-ghost{flex:1 1 auto}
  .footer-grid{grid-template-columns:1fr;gap:30px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}

/* roulang page: category1 */
:root{
  --ink-950:#04141A;
  --ink-900:#06191F;
  --ink-850:#0A2229;
  --ink-800:#0E2A33;
  --line-soft:rgba(255,255,255,.08);
  --line-brand:rgba(18,165,148,.28);
  --brand-600:#0F8F81;
  --brand-500:#12A594;
  --brand-300:#5FD8C6;
  --accent-500:#F0A93B;
  --text-1:#E6F1F2;
  --text-2:#9FB4B8;
  --text-3:#6C868C;
  --light-bg:#F3F7F6;
  --light-card:#FFFFFF;
  --light-text:#0B262C;
  --radius-card:16px;
  --radius-glass:20px;
  --radius-btn:11px;
  --shadow-card:0 2px 8px rgba(4,20,26,.20);
  --shadow-hover:0 18px 44px rgba(4,20,26,.38);
  --ease:cubic-bezier(.2,.7,.3,1);
  --dur:.25s;
  --section-y:100px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--text-1);
  font-family:"HarmonyOS Sans","PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color var(--dur) var(--ease)}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;font-weight:600;color:var(--text-1);letter-spacing:-.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand-300);outline-offset:2px;border-radius:4px}

/* ---------- 容器 ---------- */
.container-x{width:100%;max-width:1220px;margin:0 auto;padding:0 24px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-btn);font-weight:600;letter-spacing:.02em;
  border:1px solid transparent;cursor:pointer;white-space:nowrap;
  transition:transform var(--dur) var(--ease),background var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.btn-accent{
  background:var(--accent-500);color:#1C1300;border-color:var(--accent-500);
  box-shadow:0 0 0 1px rgba(240,169,59,.35),0 10px 30px rgba(240,169,59,.22);
  padding:.72rem 1.5rem;font-size:15px;
}
.btn-accent:hover{background:#F5B855;border-color:#F5B855;color:#1C1300;transform:translateY(-2px);box-shadow:0 0 0 1px rgba(240,169,59,.5),0 14px 36px rgba(240,169,59,.32)}
.btn-accent:active{transform:translateY(0)}
.btn-outline-brand{
  background:transparent;color:var(--brand-300);border-color:var(--line-brand);
  padding:.7rem 1.4rem;font-size:15px;
}
.btn-outline-brand:hover{background:rgba(18,165,148,.12);color:var(--brand-300);border-color:var(--brand-500);transform:translateY(-2px)}
.btn-outline-brand:active{transform:translateY(0)}
.btn-lg{padding:.9rem 1.9rem;font-size:16px}
.btn-xs{padding:.3rem .8rem;font-size:13px;border-radius:8px}
.btn-ghost{background:transparent;border:0;color:var(--text-2);padding:0;font-size:14px}
.btn-ghost:hover{color:var(--brand-300)}
.btn-ghost i{transition:transform var(--dur) var(--ease)}
.btn-ghost:hover i{transform:translateX(4px)}

/* ---------- 顶部信息条 + 导航 ---------- */
.site-header{position:sticky;top:0;z-index:1030}
.topbar{height:34px;overflow:hidden;background:var(--ink-950);border-bottom:1px solid var(--line-soft);transition:height var(--dur) var(--ease)}
.topbar-inner{height:34px;display:flex;align-items:center;justify-content:space-between;gap:20px;font-size:13px;color:var(--text-3)}
.topbar-domain{display:inline-flex;align-items:center;gap:7px;color:var(--text-2);letter-spacing:.02em}
.topbar-domain i{color:var(--brand-500)}
.topbar-note{flex:1;text-align:center;color:var(--text-3)}
.topbar-actions{display:flex;align-items:center;gap:14px}
.topbar-link{color:var(--text-2);font-size:13px}
.topbar-link:hover{color:var(--brand-300)}
.site-header.scrolled .topbar{height:0;border-bottom-color:transparent}

.navbar-wrap{background:rgba(6,25,31,.9);border-bottom:1px solid var(--line-soft);transition:background var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease)}
.site-header.scrolled .navbar-wrap{background:rgba(12,42,51,.55);backdrop-filter:blur(12px) saturate(140%);-webkit-backdrop-filter:blur(12px) saturate(140%);border-bottom-color:var(--line-brand);box-shadow:0 10px 34px rgba(4,20,26,.42)}
.nav-inner{height:72px;display:flex;align-items:center;gap:26px;position:relative}
.brand{display:inline-flex;align-items:center;gap:11px;flex-shrink:0}
.brand-mark{
  width:36px;height:36px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(140deg,var(--brand-500),var(--brand-600));
  color:#04211D;font-weight:800;font-size:17px;letter-spacing:0;
  box-shadow:0 0 0 1px rgba(95,216,198,.25);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;font-weight:700;font-size:17px;letter-spacing:.04em;color:var(--text-1)}
.brand-text small{font-size:10px;font-weight:500;letter-spacing:.16em;color:var(--text-3);margin-top:2px}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-item{list-style:none}
.nav-link{
  position:relative;display:block;padding:8px 14px;font-size:15px;color:var(--text-2);
  border-radius:8px;transition:color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  background:var(--brand-500);transform:scaleX(0);transform-origin:center;
  transition:transform var(--dur) var(--ease);
}
.nav-link:hover{color:var(--text-1);background:rgba(18,165,148,.08)}
.nav-link.active{color:var(--text-1);font-weight:600}
.nav-link.active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;background:transparent;
  border:1px solid var(--line-soft);color:var(--text-1);font-size:17px;
  align-items:center;justify-content:center;cursor:pointer;
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.nav-toggle:hover{border-color:var(--line-brand);color:var(--brand-300)}

/* ---------- 面包屑 ---------- */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:9px;font-size:13px;color:var(--text-3);margin-bottom:16px}
.crumb a{color:var(--text-3)}
.crumb a:hover{color:var(--brand-300)}
.crumb span.sep{color:rgba(255,255,255,.18)}
.crumb .current{color:var(--text-3)}

/* ---------- 分类 Hero（紧凑型，无配图） ---------- */
.cat-hero{
  position:relative;
  padding:64px 0 72px;
  background:
    radial-gradient(820px 320px at 82% -10%, rgba(18,165,148,.20), transparent 68%),
    linear-gradient(180deg,var(--ink-850) 0%,var(--ink-900) 100%);
  border-bottom:1px solid var(--line-soft);
  overflow:hidden;
}
.cat-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  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:56px 56px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 88%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 88%);
}
.cat-hero .container-x{position:relative;z-index:1;max-width:1020px}
.eyebrow{
  font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--brand-300);
  font-weight:600;margin-bottom:14px;
}
.cat-hero h1{
  font-size:clamp(30px,4.4vw,50px);
  line-height:1.18;font-weight:700;letter-spacing:-.01em;max-width:16em;
}
.hero-lead{margin-top:18px;font-size:17px;line-height:1.8;color:var(--text-2);max-width:44em}
.hero-actions{margin-top:30px;display:flex;flex-wrap:wrap;gap:14px}
.hero-meta{display:flex;flex-wrap:wrap;gap:12px 26px;margin-top:32px;padding-top:24px;border-top:1px solid var(--line-soft)}
.hero-meta li{display:inline-flex;align-items:center;gap:9px;font-size:14px;color:var(--text-2)}
.hero-meta i{color:var(--brand-500);font-size:13px}

/* ---------- 通用板块 ---------- */
.section{padding:var(--section-y) 0}
.section-alt{background:var(--ink-850)}
.section-head{max-width:720px;margin-bottom:48px}
.section-head .eyebrow{margin-bottom:12px}
.section-head h2{font-size:clamp(24px,3vw,36px);line-height:1.25;font-weight:600}
.section-sub{margin-top:14px;font-size:16px;line-height:1.8;color:var(--text-2)}

/* ---------- 能力矩阵（非等宽、错落） ---------- */
.matrix-grid{
  display:grid;grid-template-columns:repeat(12,1fr);
  grid-auto-rows:minmax(252px,auto);gap:24px;
}
.m-item{display:flex}
.m-item--a{grid-column:span 5;grid-row:span 2}
.m-item--b{grid-column:span 3}
.m-item--c{grid-column:span 4}
.m-item--d{grid-column:span 3}
.m-item--e{grid-column:span 4}
.m-card{
  display:flex;flex-direction:column;width:100%;
  background:var(--ink-800);border:1px solid var(--line-soft);
  border-radius:var(--radius-card);padding:26px;
  box-shadow:var(--shadow-card);position:relative;overflow:hidden;
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.m-card::after{
  content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.02);
}
.m-card:hover{transform:translateY(-4px);border-color:var(--line-brand);box-shadow:var(--shadow-hover)}
.m-card--tall{padding:28px}
.m-media{
  border-radius:14px;overflow:hidden;margin-bottom:22px;position:relative;
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.06);
}
.m-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/9;transition:transform .5s var(--ease)}
.m-card:hover .m-media img{transform:scale(1.04)}
.m-icon{
  width:42px;height:42px;border-radius:12px;display:grid;place-items:center;
  background:rgba(18,165,148,.12);border:1px solid var(--line-brand);
  color:var(--brand-300);font-size:17px;margin-bottom:16px;
}
.m-title{font-size:19px;font-weight:600;line-height:1.4}
.m-card--tall .m-title{font-size:22px}
.m-desc{margin-top:10px;font-size:14px;line-height:1.75;color:var(--text-2)}
.m-list{margin-top:16px;display:flex;flex-direction:column;gap:9px}
.m-list li{position:relative;padding-left:15px;font-size:14px;line-height:1.7;color:var(--text-2)}
.m-list li::before{
  content:"";position:absolute;left:0;top:.62em;width:6px;height:6px;border-radius:50%;
  background:var(--brand-500);
}
.m-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:auto;padding-top:20px}
.tag{
  display:inline-flex;align-items:center;font-size:12px;line-height:1;
  padding:6px 11px;border-radius:999px;
  background:rgba(18,165,148,.12);color:var(--brand-300);border:1px solid var(--line-brand);
}
.tag--amber{background:rgba(240,169,59,.12);color:var(--accent-500);border-color:rgba(240,169,59,.32)}

/* ---------- 指标数字带 ---------- */
.stat-band{background:var(--ink-950);border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft);padding:56px 0}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:28px}
.stat-item{position:relative;padding-left:22px}
.stat-item::before{content:"";position:absolute;left:0;top:8px;bottom:8px;width:2px;background:var(--brand-500);border-radius:2px}
.stat-num{
  font-size:clamp(30px,3.6vw,42px);font-weight:700;line-height:1.1;
  font-variant-numeric:tabular-nums;color:var(--text-1);letter-spacing:-.02em;
}
.stat-num em{font-style:normal;font-size:.5em;color:var(--brand-300);margin-left:4px;letter-spacing:0}
.stat-label{margin-top:10px;font-size:13.5px;line-height:1.6;color:var(--text-3)}

/* ---------- 配置路径（非卡片式清单） ---------- */
.path-wrap{display:grid;grid-template-columns:repeat(2,1fr);gap:0 56px;border-top:1px solid var(--line-soft)}
.path-item{display:flex;gap:20px;padding:30px 0;border-bottom:1px solid var(--line-soft)}
.path-step{
  flex-shrink:0;width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  font-size:15px;font-weight:700;font-variant-numeric:tabular-nums;
  color:var(--brand-300);background:rgba(18,165,148,.10);border:1px solid var(--line-brand);
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease);
}
.path-item:hover .path-step{background:rgba(18,165,148,.22);color:#CFF7EF}
.path-body h3{font-size:18px;font-weight:600;line-height:1.45}
.path-body p{margin-top:9px;font-size:14.5px;line-height:1.8;color:var(--text-2)}

/* ---------- FAQ ---------- */
.faq-section{background:var(--ink-850)}
.faq-layout{display:grid;grid-template-columns:4fr 8fr;gap:56px;align-items:start}
.faq-side h2{font-size:clamp(24px,3vw,34px);line-height:1.28}
.faq-side p{margin-top:14px;font-size:15.5px;line-height:1.8;color:var(--text-2)}
.faq-side .btn{margin-top:24px}
.faq-list{border-top:1px solid var(--line-soft)}
.faq-item{border-bottom:1px solid var(--line-soft);position:relative}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:24px 0 24px 0;font-size:17px;font-weight:600;color:var(--text-1);
  transition:color var(--dur) var(--ease),padding var(--dur) var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--brand-300)}
.faq-item summary i{
  flex-shrink:0;width:28px;height:28px;border-radius:8px;display:grid;place-items:center;
  font-size:12px;color:var(--brand-300);border:1px solid var(--line-brand);
  background:rgba(18,165,148,.10);
  transition:transform var(--dur) var(--ease),background var(--dur) var(--ease);
}
.faq-item[open] summary i{transform:rotate(45deg);background:rgba(18,165,148,.22)}
.faq-item[open]{border-left:3px solid var(--brand-500);padding-left:18px}
.faq-body{padding:0 0 26px;font-size:15px;line-height:1.85;color:var(--text-2);max-width:62em}

/* ---------- 底部 CTA ---------- */
.cta-band{
  position:relative;padding:86px 0;overflow:hidden;
  background:radial-gradient(880px 320px at 14% 0%, rgba(18,165,148,.18), transparent 66%),var(--ink-950);
  border-top:1px solid var(--line-brand);border-bottom:1px solid var(--line-brand);
}
.cta-band::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.55;
  background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:48px 48px;
}
.cta-inner{position:relative;z-index:1;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:32px}
.cta-inner h2{font-size:clamp(24px,3vw,34px);line-height:1.3;max-width:20em}
.cta-inner p{margin-top:12px;font-size:15.5px;color:var(--text-2);max-width:34em}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-950);border-top:1px solid var(--line-brand);padding:64px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:48px}
.footer-brand .brand{margin-bottom:18px}
.footer-brand p{font-size:14px;line-height:1.8;color:var(--text-2);max-width:30em}
.footer-contact{margin-top:20px;display:flex;flex-direction:column;gap:10px}
.footer-contact span{display:inline-flex;align-items:flex-start;gap:9px;font-size:13.5px;color:var(--text-3);line-height:1.7}
.footer-contact i{color:var(--brand-500);margin-top:4px;font-size:12px}
.footer-col h4{font-size:15px;font-weight:600;color:var(--text-1);margin-bottom:18px;letter-spacing:.02em}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col a{font-size:14px;color:var(--text-2)}
.footer-col a:hover{color:var(--brand-300)}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line-soft);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:13px;color:var(--text-3);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  :root{--section-y:88px}
  .nav-link{padding:8px 11px;font-size:14.5px}
  .nav-inner{gap:18px}
}
@media (max-width:991.98px){
  :root{--section-y:72px}
  .container-x{padding:0 20px}
  .topbar-note{display:none}
  .nav-toggle{display:inline-flex}
  .main-nav{
    display:none;position:absolute;top:100%;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:0;
    background:var(--ink-950);border-bottom:1px solid var(--line-brand);
    padding:10px 20px 20px;box-shadow:0 22px 44px rgba(4,20,26,.55);
  }
  .site-header.nav-open .main-nav{display:flex}
  .nav-link{padding:14px 4px;font-size:16px;border-bottom:1px solid var(--line-soft);border-radius:0}
  .nav-link::after{display:none}
  .nav-link.active{color:var(--brand-300)}
  .nav-item:last-child .nav-link{border-bottom:0}
  .matrix-grid{grid-template-columns:repeat(2,1fr);grid-auto-rows:auto}
  .m-item--a,.m-item--b,.m-item--c,.m-item--d,.m-item--e{grid-column:span 1;grid-row:auto}
  .m-item--a{grid-column:span 2}
  .stat-grid{grid-template-columns:repeat(2,1fr);gap:32px 24px}
  .faq-layout{grid-template-columns:1fr;gap:36px}
  .path-wrap{grid-template-columns:1fr;gap:0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .footer-brand{grid-column:span 2}
}
@media (max-width:767.98px){
  .cat-hero{padding:44px 0 54px}
  .hero-lead{font-size:16px}
  .section-head{margin-bottom:34px}
  .cta-band{padding:64px 0}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .stat-band{padding:44px 0}
}
@media (max-width:575.98px){
  :root{--section-y:56px}
  .container-x{padding:0 16px}
  .topbar-inner{gap:12px}
  .topbar-domain{font-size:12px}
  .brand-text{font-size:16px}
  .matrix-grid{grid-template-columns:1fr;gap:16px}
  .m-item--a{grid-column:span 1}
  .m-card{padding:22px}
  .stat-grid{grid-template-columns:1fr;gap:24px}
  .footer-grid{grid-template-columns:1fr}
  .footer-brand{grid-column:span 1}
  .footer-bottom{flex-direction:column;gap:8px}
  .hero-actions .btn{width:100%}
  .cat-hero h1{font-size:28px}
}

/* roulang page: category2 */
:root{
  --ink-950:#04141A;--ink-900:#06191F;--ink-850:#0A2229;--ink-800:#0E2A33;
  --line-soft:rgba(255,255,255,.08);--line-brand:rgba(18,165,148,.28);
  --brand-600:#0F8F81;--brand-500:#12A594;--brand-300:#5FD8C6;
  --accent-500:#F0A93B;--accent-600:#D8912A;
  --text-1:#E6F1F2;--text-2:#9FB4B8;--text-3:#6C868C;
  --light-bg:#F3F7F6;--light-card:#FFFFFF;--light-text:#0B262C;--light-text-2:#4C6A70;
  --r-card:16px;--r-glass:20px;--r-btn:12px;--r-img:14px;
  --shadow-card:0 2px 8px rgba(4,20,26,.20);
  --shadow-hover:0 18px 44px rgba(4,20,26,.38);
  --shadow-amber:0 0 0 1px rgba(240,169,59,.35),0 10px 30px rgba(240,169,59,.22);
  --shadow-brand:0 0 0 1px rgba(18,165,148,.28);
  --t:.25s cubic-bezier(.2,.7,.3,1);
  --ease:cubic-bezier(.2,.7,.3,1);
  --sect:110px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;background:var(--ink-900);color:var(--text-1);
  font-family:"HarmonyOS Sans","PingFang SC","Microsoft YaHei","Noto Sans SC",Inter,system-ui,-apple-system,sans-serif;
  font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color var(--t),opacity var(--t);}
a:hover{color:var(--brand-300);}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
h1,h2,h3,h4,h5{margin:0;font-weight:600;line-height:1.28;letter-spacing:-.01em;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand-300);outline-offset:2px;border-radius:4px;}
::selection{background:rgba(18,165,148,.35);}
.container-x{max-width:1220px;margin:0 auto;padding:0 24px;width:100%;}
.section{padding:var(--sect) 0;}
.section.tight{padding:76px 0;}
.section-alt{background:var(--ink-850);}
.section-light{background:var(--light-bg);color:var(--light-text);}
.eyebrow{
  font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--brand-300);
  font-weight:600;display:inline-flex;align-items:center;gap:8px;
}
.eyebrow::before{content:"";width:18px;height:1px;background:var(--brand-300);display:inline-block;}
.sec-head{max-width:760px;margin-bottom:44px;}
.sec-head h2{font-size:clamp(24px,3vw,36px);font-weight:600;margin-top:14px;}
.sec-head p{margin-top:14px;color:var(--text-2);font-size:16px;max-width:640px;}
.section-light .sec-head p{color:var(--light-text-2);}
.section-light .eyebrow{color:var(--brand-600);}
.section-light .eyebrow::before{background:var(--brand-600);}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-btn);font-weight:600;letter-spacing:.02em;
  padding:0 22px;height:48px;font-size:15px;border:1px solid transparent;
  transition:all var(--t);white-space:nowrap;}
.btn-primary{background:var(--accent-500);color:#2A1A02;box-shadow:var(--shadow-amber);}
.btn-primary:hover{background:#F5B854;color:#2A1A02;transform:translateY(-2px);box-shadow:0 0 0 1px rgba(240,169,59,.5),0 14px 36px rgba(240,169,59,.3);}
.btn-outline{border-color:var(--line-brand);color:var(--text-1);background:transparent;}
.btn-outline:hover{background:rgba(18,165,148,.1);border-color:var(--brand-500);color:#fff;transform:translateY(-2px);}
.btn-ghost{color:var(--text-2);border-color:var(--line-soft);}
.btn-ghost:hover{color:var(--text-1);border-color:var(--line-brand);}
.btn-sm{height:40px;padding:0 16px;font-size:14px;}
.btn-xs{height:30px;padding:0 12px;font-size:12.5px;border-radius:8px;}
.btn-lg{height:54px;padding:0 28px;font-size:16px;}
.btn-link{display:inline-flex;align-items:center;gap:8px;color:var(--brand-300);font-weight:600;font-size:14px;padding:0;height:auto;}
.btn-link i{transition:transform var(--t);}
.btn-link:hover i{transform:translateX(4px);}
.btn-block{width:100%;}

/* ---------- badges ---------- */
.badge-tag{display:inline-flex;align-items:center;gap:6px;border-radius:999px;padding:5px 12px;
  font-size:12px;font-weight:600;letter-spacing:.04em;
  background:rgba(18,165,148,.12);color:var(--brand-300);border:1px solid rgba(18,165,148,.32);}
.badge-tag.amber{background:rgba(240,169,59,.12);color:#F4BE6B;border-color:rgba(240,169,59,.34);}
.badge-tag.plain{background:rgba(255,255,255,.05);color:var(--text-2);border-color:var(--line-soft);}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:1030;}
.topbar{height:34px;background:var(--ink-950);border-bottom:1px solid var(--line-soft);font-size:13px;}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;height:34px;gap:16px;}
.topbar-domain{color:var(--text-3);letter-spacing:.06em;font-size:12.5px;}
.topbar-hint{color:var(--text-3);display:flex;align-items:center;gap:8px;font-size:13px;}
.topbar-hint i{color:var(--brand-500);font-size:11px;}
.topbar-actions{display:flex;align-items:center;gap:14px;}
.topbar-link{color:var(--text-2);font-size:13px;}
.nav-wrap{background:rgba(6,25,31,.92);border-bottom:1px solid var(--line-soft);transition:all var(--t);}
.nav-wrap.scrolled{background:rgba(12,42,51,.62);backdrop-filter:blur(12px) saturate(140%);
  -webkit-backdrop-filter:blur(12px) saturate(140%);border-bottom-color:var(--line-brand);
  box-shadow:0 10px 30px rgba(4,20,26,.45);}
.nav-inner{display:flex;align-items:center;gap:28px;height:72px;}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;letter-spacing:.04em;font-size:18px;color:var(--text-1);}
.brand:hover{color:var(--text-1);}
.brand-mark{width:36px;height:36px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(140deg,var(--brand-500),var(--brand-600));color:#03181A;font-weight:700;font-size:17px;
  box-shadow:var(--shadow-brand);}
.brand small{display:block;font-size:9.5px;letter-spacing:.22em;color:var(--text-3);font-weight:500;margin-top:1px;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-item{position:relative;}
.nav-link{display:inline-block;padding:26px 14px;font-size:15px;color:var(--text-2);font-weight:500;}
.nav-link:hover{color:var(--text-1);}
.nav-link.active{color:var(--text-1);font-weight:600;}
.nav-link.active::after{content:"";position:absolute;left:14px;right:14px;bottom:12px;height:2px;
  background:var(--brand-500);border-radius:2px;}
.nav-cta{display:flex;align-items:center;gap:12px;}
.nav-toggle{display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line-soft);
  color:var(--text-1);align-items:center;justify-content:center;font-size:16px;}
.mobile-drawer{display:none;background:var(--ink-950);border-top:1px solid var(--line-soft);}
.mobile-drawer.open{display:block;}
.mobile-drawer a{display:flex;align-items:center;justify-content:space-between;
  padding:14px 24px;font-size:16px;color:var(--text-2);border-bottom:1px solid var(--line-soft);}
.mobile-drawer a.active{color:var(--brand-300);}
.mobile-drawer a i{font-size:12px;color:var(--text-3);}

/* ---------- breadcrumb ---------- */
.crumb{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-3);margin-bottom:16px;flex-wrap:wrap;}
.crumb a{color:var(--text-3);}
.crumb a:hover{color:var(--brand-300);}
.crumb .sep{opacity:.5;}
.crumb .current{color:var(--text-2);}

/* ---------- hero ---------- */
.hero-scene{
  position:relative;padding:70px 0 78px;overflow:hidden;
  background-image:linear-gradient(100deg,rgba(4,20,26,.94) 0%,rgba(6,25,31,.86) 52%,rgba(10,34,41,.72) 100%),
    url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line-soft);
}
.hero-scene::after{content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(18,165,148,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(18,165,148,.05) 1px,transparent 1px);
  background-size:56px 56px;mask-image:radial-gradient(circle at 78% 30%,#000 0%,transparent 68%);
  -webkit-mask-image:radial-gradient(circle at 78% 30%,#000 0%,transparent 68%);}
.hero-scene .container-x{position:relative;z-index:2;}
.hero-title{font-size:clamp(30px,4.4vw,50px);font-weight:700;line-height:1.18;letter-spacing:-.01em;max-width:15em;}
.hero-title em{font-style:normal;color:var(--brand-300);}
.hero-sub{margin-top:20px;font-size:17px;color:var(--text-2);max-width:640px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-chips{display:flex;flex-wrap:wrap;gap:12px;margin-top:34px;}
.chip{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--text-2);
  border:1px solid var(--line-soft);border-radius:999px;padding:7px 14px;background:rgba(255,255,255,.02);}
.chip i{color:var(--brand-500);font-size:12px;}

/* ---------- scene rows ---------- */
.scene-article{background:var(--ink-900);padding:96px 0 40px;}
.scene-row{display:grid;grid-template-columns:1.05fr .95fr;gap:52px;align-items:center;padding:44px 0;
  border-bottom:1px solid var(--line-soft);}
.scene-row:last-child{border-bottom:0;}
.scene-row.reverse .scene-media{order:2;}
.scene-media{position:relative;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line-soft);
  box-shadow:var(--shadow-card);}
.scene-media img{width:100%;height:320px;object-fit:cover;transition:transform .5s var(--ease);}
.scene-row:hover .scene-media img{transform:scale(1.03);}
.scene-media .badge-tag{position:absolute;top:14px;left:14px;background:rgba(4,20,26,.78);backdrop-filter:blur(6px);}
.scene-body h3{font-size:23px;font-weight:600;}
.scene-body>p{margin-top:14px;color:var(--text-2);font-size:15.5px;}
.point-list{margin-top:20px;display:grid;gap:12px;}
.point-list li{display:flex;gap:12px;font-size:15px;color:var(--text-2);line-height:1.7;}
.point-list li i{color:var(--brand-500);font-size:9px;margin-top:9px;flex:0 0 auto;}
.point-list li strong{color:var(--text-1);font-weight:600;}
.scene-body .btn-link{margin-top:22px;}

/* ---------- sticky sidebar ---------- */
.side-col{position:relative;}
.side-sticky{position:sticky;top:118px;display:grid;gap:20px;}
.consult-card{background:var(--ink-800);border:1px solid var(--line-brand);border-radius:var(--r-glass);
  padding:26px 24px;box-shadow:var(--shadow-card);}
.consult-card h4{font-size:18px;font-weight:600;}
.consult-card>p{margin-top:10px;font-size:14px;color:var(--text-2);}
.field{margin-top:16px;}
.field label{display:block;font-size:13px;color:var(--text-3);margin-bottom:7px;}
.field input,.field select{width:100%;height:44px;border-radius:10px;background:var(--ink-850);
  border:1px solid var(--line-soft);padding:0 14px;font-size:14.5px;color:var(--text-1);transition:all var(--t);}
.field input::placeholder{color:var(--text-3);}
.field input:focus,.field select:focus{outline:none;border-color:var(--brand-500);
  box-shadow:0 0 0 3px rgba(18,165,148,.22);}
.consult-card .btn{margin-top:20px;}
.form-note{margin-top:12px;font-size:12.5px;color:var(--text-3);line-height:1.6;}
.mini-card{background:var(--ink-800);border:1px solid var(--line-soft);border-radius:var(--r-card);
  padding:20px 22px;}
.mini-card h5{font-size:15px;font-weight:600;display:flex;align-items:center;gap:8px;}
.mini-card h5 i{color:var(--brand-500);}
.mini-card ul{margin-top:12px;display:grid;gap:9px;}
.mini-card ul li{font-size:14px;color:var(--text-2);display:flex;gap:9px;}
.mini-card ul li i{color:var(--brand-300);font-size:11px;margin-top:6px;}

/* ---------- metrics ---------- */
.metrics{background:var(--ink-850);border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft);padding:56px 0;}
.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.metric{border-left:2px solid var(--line-brand);padding-left:20px;}
.metric .num{font-size:38px;font-weight:700;font-variant-numeric:tabular-nums;color:var(--brand-300);
  line-height:1.1;letter-spacing:-.02em;}
.metric .num span{font-size:20px;color:var(--text-2);margin-left:2px;}
.metric .label{margin-top:8px;font-size:14px;color:var(--text-2);}

/* ---------- scenario checklist ---------- */
.checklist{display:grid;grid-template-columns:repeat(2,1fr);gap:0 48px;margin-top:8px;}
.checklist li{display:flex;gap:14px;padding:18px 0;border-bottom:1px solid var(--line-soft);}
.checklist li .idx{font-size:12px;color:var(--brand-300);font-weight:700;letter-spacing:.08em;padding-top:4px;flex:0 0 auto;}
.checklist li h4{font-size:16.5px;font-weight:600;}
.checklist li p{font-size:14px;color:var(--text-2);margin-top:6px;}

/* ---------- faq ---------- */
.faq-wrap{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start;}
.accordion-item{background:transparent;border:0;border-bottom:1px solid var(--line-soft);}
.accordion-button{background:transparent;color:var(--text-1);font-size:16.5px;font-weight:600;
  padding:22px 44px 22px 18px;box-shadow:none;border-radius:0;position:relative;transition:all var(--t);}
.accordion-button:not(.collapsed){background:rgba(18,165,148,.06);color:var(--brand-300);
  box-shadow:inset 3px 0 0 var(--brand-500);}
.accordion-button:focus{box-shadow:none;outline:none;border-color:transparent;}
.accordion-button:focus-visible{outline:2px solid var(--brand-300);outline-offset:-3px;}
.accordion-button::after{position:absolute;right:14px;background-image:none;content:"\002b";
  font-family:"Font Awesome 6 Free";font-weight:900;font-size:14px;color:var(--brand-300);
  width:auto;height:auto;transform:rotate(0);transition:transform var(--t);}
.accordion-button:not(.collapsed)::after{content:"\002b";transform:rotate(45deg);}
.accordion-body{padding:4px 46px 24px 18px;color:var(--text-2);font-size:15px;line-height:1.8;}

/* ---------- cta band ---------- */
.cta-band{position:relative;background:var(--ink-950);border-top:1px solid var(--line-brand);
  border-bottom:1px solid var(--line-soft);padding:82px 0;overflow:hidden;}
.cta-band::before{content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(18,165,148,.07) 1px,transparent 1px),
    linear-gradient(90deg,rgba(18,165,148,.07) 1px,transparent 1px);
  background-size:44px 44px;mask-image:linear-gradient(90deg,#000,transparent 78%);
  -webkit-mask-image:linear-gradient(90deg,#000,transparent 78%);}
.cta-inner{position:relative;z-index:2;display:flex;flex-wrap:wrap;align-items:center;
  justify-content:space-between;gap:28px;}
.cta-inner h2{font-size:clamp(23px,2.8vw,32px);max-width:20em;}
.cta-inner p{margin-top:12px;color:var(--text-2);font-size:15.5px;max-width:38em;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-950);border-top:1px solid var(--line-brand);padding:64px 0 26px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:44px;}
.footer-brand p{margin-top:16px;color:var(--text-2);font-size:14px;max-width:30em;line-height:1.8;}
.footer-contact{margin-top:18px;display:grid;gap:9px;font-size:13.5px;color:var(--text-3);}
.footer-contact i{color:var(--brand-500);margin-right:8px;width:14px;}
.footer-col h4{font-size:15px;color:var(--text-1);margin-bottom:16px;font-weight:600;}
.footer-col ul{display:grid;gap:11px;}
.footer-col ul a{font-size:14px;color:var(--text-2);}
.footer-col ul a:hover{color:var(--brand-300);}
.footer-bottom{margin-top:44px;padding-top:22px;border-top:1px solid var(--line-soft);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:var(--text-3);}

@media (max-width:1199.98px){
  .main-nav{display:none;}
  .nav-toggle{display:inline-flex;margin-left:auto;}
  .nav-cta .btn{display:none;}
}
@media (max-width:991.98px){
  :root{--sect:72px;}
  .section{padding:var(--sect) 0;}
  .scene-row{grid-template-columns:1fr;gap:26px;padding:34px 0;}
  .scene-row.reverse .scene-media{order:0;}
  .scene-media img{height:270px;}
  .side-sticky{position:static;}
  .faq-wrap{grid-template-columns:1fr;gap:24px;}
  .metric-grid{grid-template-columns:repeat(2,1fr);gap:28px 20px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
  .footer-brand{grid-column:1/-1;}
  .checklist{gap:0 32px;}
  .hero-scene{padding:52px 0 58px;}
}
@media (max-width:575.98px){
  :root{--sect:56px;}
  .container-x{padding:0 16px;}
  .topbar-hint{display:none;}
  .topbar-inner{justify-content:space-between;}
  .hero-title{font-size:29px;}
  .hero-sub{font-size:15.5px;}
  .hero-actions .btn{width:100%;}
  .checklist{grid-template-columns:1fr;}
  .metric-grid{grid-template-columns:1fr;gap:22px;}
  .metric{border-left-width:2px;}
  .footer-grid{grid-template-columns:1fr;}
  .cta-actions .btn{width:100%;}
  .accordion-button{font-size:15.5px;padding-right:38px;}
  .scene-media img{height:210px;}
}

/* roulang page: category3 */
:root{
  --ink-950:#04141A;
  --ink-900:#06191F;
  --ink-850:#0A2229;
  --ink-800:#0E2A33;
  --line-soft:rgba(255,255,255,.08);
  --line-brand:rgba(18,165,148,.28);
  --brand-600:#0F8F81;
  --brand-500:#12A594;
  --brand-300:#5FD8C6;
  --accent-500:#F0A93B;
  --text-1:#E6F1F2;
  --text-2:#9FB4B8;
  --text-3:#6C868C;
  --light-bg:#F3F7F6;
  --light-card:#FFFFFF;
  --light-text:#0B262C;
  --r-sm:10px;
  --r-md:12px;
  --r-lg:16px;
  --r-xl:20px;
  --sh-1:0 2px 8px rgba(4,20,26,.20);
  --sh-2:0 18px 44px rgba(4,20,26,.38);
  --sh-cta:0 0 0 1px rgba(240,169,59,.35),0 10px 30px rgba(240,169,59,.22);
  --sh-brand:0 0 0 1px rgba(18,165,148,.28);
  --tr:.25s cubic-bezier(.2,.7,.3,1);
  --sec-pad:104px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"HarmonyOS Sans","PingFang SC","Microsoft YaHei","Noto Sans SC",Inter,system-ui,-apple-system,sans-serif;
  background:var(--ink-900);
  color:var(--text-1);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,h5,p{margin:0;}
:focus-visible{outline:2px solid var(--brand-300);outline-offset:2px;border-radius:4px;}
::selection{background:rgba(18,165,148,.35);color:#fff;}

.container-x{width:100%;max-width:1220px;margin:0 auto;padding:0 24px;}

/* ============ 顶部信息条 ============ */
.topbar{background:var(--ink-950);border-bottom:1px solid var(--line-soft);font-size:13px;color:var(--text-3);}
.topbar .inner{display:flex;align-items:center;gap:18px;min-height:38px;padding:5px 0;flex-wrap:wrap;}
.tb-domain{color:var(--text-2);letter-spacing:.05em;font-variant-numeric:tabular-nums;white-space:nowrap;}
.tb-note{flex:1;text-align:center;color:var(--text-3);min-width:180px;}
.tb-actions{display:flex;align-items:center;gap:16px;margin-left:auto;white-space:nowrap;}
.tb-actions a{color:var(--text-2);transition:color var(--tr);}
.tb-actions a:hover{color:var(--brand-300);}
.tb-actions .tb-dot{width:5px;height:5px;border-radius:50%;background:var(--brand-500);display:inline-block;margin-right:6px;vertical-align:middle;}

/* ============ 主导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:var(--ink-900);
  border-bottom:1px solid var(--line-soft);
  transition:background var(--tr),box-shadow var(--tr);
}
.site-header.is-stuck{
  background:rgba(10,34,41,.82);
  backdrop-filter:blur(12px) saturate(140%);
  -webkit-backdrop-filter:blur(12px) saturate(140%);
  box-shadow:0 1px 0 rgba(18,165,148,.28),0 14px 34px rgba(4,20,26,.45);
}
.nav-wrap{display:flex;align-items:center;gap:26px;min-height:72px;}
.brand{display:inline-flex;align-items:center;gap:12px;font-size:19px;font-weight:700;letter-spacing:.04em;color:var(--text-1);white-space:nowrap;}
.brand-mark{
  width:36px;height:36px;flex:0 0 36px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand-500),var(--brand-600));
  color:#04141A;font-size:18px;font-weight:700;box-shadow:var(--sh-brand);
}
.brand small{display:block;font-size:10px;letter-spacing:.18em;color:var(--text-3);font-weight:500;line-height:1.4;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto;}
.main-nav .nav-link{
  position:relative;display:inline-block;padding:9px 14px;font-size:15px;line-height:1.4;
  color:var(--text-2);border-radius:8px;transition:color var(--tr),background var(--tr);
}
.main-nav .nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:1px;height:2px;border-radius:2px;
  background:var(--brand-500);transform:scaleX(0);transform-origin:center;
  transition:transform .3s cubic-bezier(.2,.7,.3,1);
}
.main-nav .nav-link:hover{color:var(--text-1);}
.main-nav .nav-link:hover::after{transform:scaleX(1);}
.main-nav .nav-link.active{color:var(--text-1);}
.main-nav .nav-link.active::after{transform:scaleX(1);background:var(--brand-300);}
.nav-cta{margin-left:14px;}
.nav-toggle{
  display:none;margin-left:auto;width:44px;height:44px;border-radius:10px;
  border:1px solid var(--line-soft);background:transparent;color:var(--text-1);
  place-items:center;cursor:pointer;transition:border-color var(--tr),color var(--tr);
}
.nav-toggle:hover{border-color:var(--line-brand);color:var(--brand-300);}
.nav-scrim{
  position:fixed;inset:0;background:rgba(4,20,26,.62);opacity:0;visibility:hidden;
  transition:opacity var(--tr),visibility var(--tr);z-index:1035;
}
.nav-scrim.show{opacity:1;visibility:visible;}

/* ============ 按钮 ============ */
.btn-x{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-md);border:1px solid transparent;
  font-size:15px;font-weight:600;letter-spacing:.02em;cursor:pointer;text-align:center;
  transition:transform var(--tr),box-shadow var(--tr),background var(--tr),border-color var(--tr),filter var(--tr),color var(--tr);
}
.btn-x.sm{height:40px;padding:0 18px;font-size:14px;}
.btn-x.lg{height:54px;padding:0 32px;font-size:16px;}
.btn-amber{background:var(--accent-500);color:#1A1204;box-shadow:var(--sh-cta);}
.btn-amber:hover{filter:brightness(1.06);transform:translateY(-2px);color:#1A1204;box-shadow:0 0 0 1px rgba(240,169,59,.5),0 16px 40px rgba(240,169,59,.3);}
.btn-amber:active{transform:translateY(0);}
.btn-ghost{background:transparent;border-color:var(--line-brand);color:var(--text-1);}
.btn-ghost:hover{background:rgba(18,165,148,.08);border-color:var(--brand-500);transform:translateY(-2px);color:var(--text-1);}
.btn-ghost:active{transform:translateY(0);}
.btn-link-arrow{
  display:inline-flex;align-items:center;gap:8px;font-size:14.5px;font-weight:600;
  color:var(--brand-300);transition:color var(--tr);
}
.btn-link-arrow i{transition:transform var(--tr);}
.btn-link-arrow:hover{color:var(--brand-500);}
.btn-link-arrow:hover i{transform:translateX(4px);}
.section-light .btn-link-arrow{color:var(--brand-600);}

/* ============ 徽章 / 标签 ============ */
.badge-soft{
  display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:999px;
  font-size:12px;line-height:1.5;letter-spacing:.02em;
  background:rgba(18,165,148,.12);color:var(--brand-300);border:1px solid rgba(18,165,148,.35);
}
.badge-amber{
  background:rgba(240,169,59,.12);color:var(--accent-500);border-color:rgba(240,169,59,.38);
}
.section-light .badge-soft{background:rgba(15,143,129,.10);color:var(--brand-600);border-color:rgba(15,143,129,.30);}

.sec-tag{display:inline-block;font-size:12px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--brand-300);}
.sec-title{font-size:clamp(24px,3vw,36px);font-weight:600;line-height:1.25;margin-top:10px;letter-spacing:-.01em;}
.sec-desc{color:var(--text-2);margin-top:12px;font-size:16px;line-height:1.8;max-width:720px;}
.section-light .sec-title{color:var(--light-text);}
.section-light .sec-desc{color:#54737A;}

/* ============ 面包屑 ============ */
.breadcrumb-x{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:18px;}
.breadcrumb-x a{color:var(--text-2);transition:color var(--tr);}
.breadcrumb-x a:hover{color:var(--brand-300);}
.breadcrumb-x .sep{color:rgba(255,255,255,.22);}
.breadcrumb-x .current{color:var(--text-3);}

/* ============ 页面 Hero ============ */
.page-hero{
  position:relative;overflow:hidden;padding:68px 0 76px;
  background:linear-gradient(180deg,rgba(4,20,26,.62) 0%,rgba(6,25,31,.93) 78%,var(--ink-900) 100%),
             url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  border-bottom:1px solid var(--line-soft);
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  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:56px 56px;
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.75),transparent 76%);
  mask-image:linear-gradient(180deg,rgba(0,0,0,.75),transparent 76%);
}
.page-hero .container-x{position:relative;z-index:2;}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;}
.page-hero h1{
  font-size:clamp(30px,4.2vw,50px);font-weight:700;line-height:1.18;letter-spacing:-.01em;margin-bottom:18px;
}
.page-hero h1 .hl{color:var(--brand-300);}
.hero-sub{font-size:17px;color:var(--text-2);max-width:620px;line-height:1.85;}
.hero-cta{display:flex;flex-wrap:wrap;gap:16px;margin-top:32px;}
.hero-trust{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px;}
.hero-trust span{
  display:inline-flex;align-items:center;gap:7px;font-size:13px;color:var(--text-2);
  padding:6px 13px;border-radius:999px;border:1px solid var(--line-soft);background:rgba(255,255,255,.02);
}
.hero-trust i{color:var(--brand-300);font-size:12px;}

.glass-card{
  background:rgba(12,42,51,.55);
  -webkit-backdrop-filter:blur(12px) saturate(140%);
  backdrop-filter:blur(12px) saturate(140%);
  border:1px solid var(--line-soft);
  border-radius:var(--r-xl);
  box-shadow:var(--sh-2),inset 0 1px 0 rgba(255,255,255,.08);
  padding:28px 26px;
}
.glass-card .gc-title{font-size:15px;font-weight:600;display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:16px;border-bottom:1px solid var(--line-soft);}
.glass-card .gc-title span{color:var(--text-3);font-size:12px;font-weight:500;}
.gc-list li{display:flex;align-items:center;gap:14px;padding:14px 0;border-bottom:1px dashed rgba(255,255,255,.07);}
.gc-list li:last-child{border-bottom:none;padding-bottom:0;}
.gc-list .gc-no{
  flex:0 0 28px;width:28px;height:28px;border-radius:9px;display:grid;place-items:center;
  font-size:12px;font-weight:700;color:var(--brand-300);
  background:rgba(18,165,148,.12);border:1px solid rgba(18,165,148,.30);
  font-variant-numeric:tabular-nums;
}
.gc-list strong{display:block;font-size:14.5px;font-weight:600;color:var(--text-1);line-height:1.5;}
.gc-list em{font-style:normal;font-size:12.5px;color:var(--text-3);}

/* ============ 板块 ============ */
.section{padding:var(--sec-pad) 0;}
.section-alt{background:var(--ink-850);border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft);}
.section-light{background:var(--light-bg);color:var(--light-text);}
.sec-head{margin-bottom:52px;max-width:780px;}

/* ============ 时间轴 ============ */
.timeline{position:relative;padding:6px 0;}
.timeline::before{
  content:"";position:absolute;left:50%;top:0;bottom:0;width:1px;transform:translateX(-.5px);
  background:linear-gradient(180deg,transparent,var(--line-brand) 10%,var(--line-brand) 90%,transparent);
}
.tl-item{position:relative;display:grid;grid-template-columns:1fr 1fr;gap:70px;margin-bottom:42px;}
.tl-item:last-child{margin-bottom:0;}
.tl-item::after{
  content:"";position:absolute;left:50%;top:36px;width:12px;height:12px;margin-left:-6px;border-radius:50%;
  background:var(--brand-500);
  box-shadow:0 0 0 4px rgba(18,165,148,.15),0 0 20px rgba(18,165,148,.65);
}
.tl-card{
  grid-column:1;
  background:var(--ink-800);border:1px solid var(--line-soft);border-radius:var(--r-lg);
  padding:26px 28px;box-shadow:var(--sh-1);
  transition:transform var(--tr),border-color var(--tr),box-shadow var(--tr);
}
.tl-item.right .tl-card{grid-column:2;}
.tl-card:hover{transform:translateY(-4px);border-color:var(--line-brand);box-shadow:var(--sh-2);}
.tl-step{
  display:inline-block;font-size:12px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;
  color:var(--brand-300);margin-bottom:10px;
}
.tl-card h3{font-size:20px;font-weight:600;line-height:1.45;margin-bottom:10px;}
.tl-card p{font-size:14.5px;color:var(--text-2);line-height:1.8;margin-bottom:14px;}
.dot-list li{position:relative;padding-left:16px;font-size:14px;color:var(--text-2);line-height:1.85;}
.dot-list li::before{
  content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:50%;
  background:var(--brand-500);
}
.tl-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;padding-top:16px;border-top:1px dashed rgba(255,255,255,.08);}
.tl-meta span{font-size:12.5px;color:var(--text-3);display:inline-flex;align-items:center;gap:6px;}
.tl-meta i{color:var(--brand-300);font-size:12px;}

/* ============ 材料与交付物（浅色带） ============ */
.deliver-grid{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:center;}
.deliver-media{position:relative;}
.deliver-media img{border-radius:14px;box-shadow:0 22px 50px rgba(11,38,44,.18);outline:1px solid rgba(11,38,44,.06);outline-offset:-1px;}
.deliver-float{
  position:absolute;left:-18px;bottom:24px;
  background:rgba(12,42,51,.88);
  -webkit-backdrop-filter:blur(12px) saturate(140%);
  backdrop-filter:blur(12px) saturate(140%);
  border:1px solid var(--line-soft);border-radius:16px;padding:14px 18px;
  box-shadow:var(--sh-2);color:var(--text-1);
}
.deliver-float strong{display:block;font-size:22px;font-weight:700;color:var(--brand-300);font-variant-numeric:tabular-nums;line-height:1.3;}
.deliver-float span{font-size:12.5px;color:var(--text-2);}
.check-list li{display:flex;gap:14px;padding:16px 0;border-bottom:1px solid rgba(11,38,44,.10);}
.check-list li:last-child{border-bottom:none;}
.check-list .ck{
  flex:0 0 24px;width:24px;height:24px;margin-top:3px;border-radius:8px;display:grid;place-items:center;
  background:rgba(15,143,129,.12);color:var(--brand-600);font-size:11px;
}
.check-list strong{display:block;font-size:15.5px;font-weight:600;color:var(--light-text);line-height:1.6;}
.check-list span{display:block;font-size:14px;color:#5C7A80;line-height:1.75;margin-top:2px;}

/* ============ 指标带 ============ */
.metric-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:8px;}
.metric-item{
  background:var(--ink-800);border:1px solid var(--line-soft);border-radius:var(--r-lg);
  padding:26px 24px;box-shadow:var(--sh-1);
  transition:transform var(--tr),border-color var(--tr);
}
.metric-item:hover{transform:translateY(-4px);border-color:var(--line-brand);}
.metric-item strong{
  display:block;font-size:clamp(28px,3.2vw,40px);font-weight:700;line-height:1.2;
  color:var(--brand-300);letter-spacing:-.01em;font-variant-numeric:tabular-nums;
}
.metric-item span{display:block;margin-top:6px;font-size:13.5px;color:var(--text-2);}

/* ============ FAQ ============ */
.faq-layout{display:grid;grid-template-columns:4fr 8fr;gap:56px;align-items:start;}
.lp-accordion .accordion-item{
  background:var(--ink-800);border:1px solid var(--line-soft);border-radius:var(--r-md);
  margin-bottom:12px;overflow:hidden;
  transition:border-color var(--tr),box-shadow var(--tr);
}
.lp-accordion .accordion-item:hover{border-color:var(--line-brand);}
.lp-accordion .accordion-button{
  background:transparent;color:var(--text-1);font-size:16px;font-weight:600;
  padding:20px 22px;box-shadow:none;border-radius:var(--r-md);
  display:flex;align-items:center;gap:16px;line-height:1.6;
}
.lp-accordion .accordion-button:not(.collapsed){
  color:var(--text-1);background:rgba(18,165,148,.06);
  border-left:3px solid var(--brand-500);padding-left:19px;
}
.lp-accordion .accordion-button:focus{box-shadow:0 0 0 2px rgba(95,216,198,.4);border-radius:var(--r-md);}
.lp-accordion .accordion-button::after{
  content:"+";display:block;background-image:none;width:auto;height:auto;margin-left:auto;
  font-size:22px;font-weight:400;line-height:1;color:var(--brand-300);
  transition:transform var(--tr);
}
.lp-accordion .accordion-button:not(.collapsed)::after{transform:rotate(45deg);}
.lp-accordion .accordion-body{
  padding:4px 22px 22px;font-size:15px;color:var(--text-2);line-height:1.85;
}
.lp-accordion .accordion-body strong{color:var(--text-1);font-weight:600;}
.faq-aside{
  background:var(--ink-800);border:1px solid var(--line-brand);border-radius:var(--r-lg);
  padding:26px 24px;box-shadow:var(--sh-brand);
}
.faq-aside h3{font-size:18px;font-weight:600;margin-bottom:10px;}
.faq-aside p{font-size:14px;color:var(--text-2);line-height:1.8;margin-bottom:18px;}
.faq-aside ul li{font-size:13.5px;color:var(--text-2);padding:7px 0;display:flex;align-items:center;gap:9px;}
.faq-aside ul i{color:var(--brand-300);font-size:12px;}

/* ============ 底部 CTA ============ */
.cta-band{
  position:relative;overflow:hidden;background:var(--ink-950);
  border-top:1px solid var(--line-brand);padding:84px 0;text-align:center;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:44px 44px;
  -webkit-mask-image:radial-gradient(circle at 50% 20%,rgba(0,0,0,.85),transparent 72%);
  mask-image:radial-gradient(circle at 50% 20%,rgba(0,0,0,.85),transparent 72%);
  pointer-events:none;
}
.cta-band .container-x{position:relative;z-index:2;}
.cta-band h2{font-size:clamp(24px,3.2vw,38px);font-weight:700;line-height:1.28;letter-spacing:-.01em;}
.cta-band p{color:var(--text-2);font-size:16px;margin-top:14px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:16px;justify-content:center;margin-top:34px;}

/* ============ 页脚 ============ */
.site-footer{background:var(--ink-950);border-top:1px solid var(--line-brand);color:var(--text-2);}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:52px;
  padding:72px 0 44px;
}
.footer-brand .brand{margin-bottom:18px;}
.footer-brand p{font-size:14px;line-height:1.85;color:var(--text-2);max-width:380px;}
.footer-contact{display:flex;flex-direction:column;gap:10px;margin-top:22px;}
.footer-contact span{font-size:13.5px;color:var(--text-3);display:flex;align-items:flex-start;gap:9px;line-height:1.7;}
.footer-contact i{color:var(--brand-300);font-size:13px;margin-top:5px;}
.footer-col h4{font-size:15px;font-weight:600;color:var(--text-1);margin-bottom:18px;letter-spacing:.02em;}
.footer-col ul li{margin-bottom:11px;}
.footer-col ul a{font-size:14px;color:var(--text-2);transition:color var(--tr),padding-left var(--tr);}
.footer-col ul a:hover{color:var(--brand-300);padding-left:4px;}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  border-top:1px solid var(--line-soft);padding:22px 0 30px;font-size:13px;color:var(--text-3);
}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  :root{--sec-pad:88px;}
  .hero-grid{gap:40px;}
}
@media (max-width:991.98px){
  :root{--sec-pad:72px;}
  .container-x{padding:0 20px;}
  .nav-toggle{display:grid;}
  .nav-cta{display:none;}
  .main-nav{
    position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);
    flex-direction:column;align-items:stretch;gap:0;margin:0;
    padding:92px 22px 36px;background:var(--ink-850);
    border-left:1px solid var(--line-brand);
    box-shadow:-24px 0 60px rgba(4,20,26,.6);
    transform:translateX(105%);
    transition:transform .32s cubic-bezier(.2,.7,.3,1);
    z-index:1040;overflow-y:auto;
  }
  .main-nav.nav-open{transform:translateX(0);}
  .main-nav .nav-link{
    display:flex;align-items:center;gap:12px;
    padding:15px 4px;font-size:16px;border-radius:0;
    border-bottom:1px solid var(--line-soft);
  }
  .main-nav .nav-link::after{display:none;}
  .main-nav .nav-link::before{
    content:"›";order:2;margin-left:auto;color:var(--brand-300);font-size:19px;line-height:1;
  }
  .main-nav .nav-link.active{color:var(--brand-300);}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .page-hero{padding:52px 0 60px;}
  .tl-item{gap:52px;}
  .deliver-grid{grid-template-columns:1fr;gap:36px;}
  .deliver-float{left:16px;bottom:16px;}
  .faq-layout{grid-template-columns:1fr;gap:36px;}
  .metric-strip{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px;padding:60px 0 36px;}
  .footer-brand{grid-column:1 / -1;}
}
@media (max-width:767.98px){
  :root{--sec-pad:60px;}
  .tb-note{display:none;}
  .topbar .inner{gap:14px;}
  .tb-actions a:first-child{display:none;}
  .timeline::before{left:14px;transform:none;}
  .tl-item{grid-template-columns:1fr;gap:0;padding-left:44px;margin-bottom:24px;}
  .tl-item .tl-card,
  .tl-item.right .tl-card{grid-column:1;}
  .tl-item::after{left:14px;margin-left:0;top:28px;}
  .tl-card{padding:22px 20px;}
  .metric-strip{grid-template-columns:1fr;gap:14px;}
  .glass-card{padding:22px 20px;}
  .hero-cta{gap:12px;}
  .hero-cta .btn-x{flex:1 1 200px;}
  .cta-band{padding:64px 0;}
  .cta-actions .btn-x{flex:1 1 220px;}
}
@media (max-width:575.98px){
  .container-x{padding:0 16px;}
  .page-hero h1{font-size:28px;}
  .brand{font-size:17px;}
  .brand-mark{width:32px;height:32px;flex-basis:32px;font-size:16px;}
  .nav-wrap{min-height:64px;gap:12px;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .hero-trust span{font-size:12.5px;}
  .lp-accordion .accordion-button{font-size:15px;padding:16px 16px;}
  .lp-accordion .accordion-button:not(.collapsed){padding-left:13px;}
  .lp-accordion .accordion-body{padding:2px 16px 18px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category4 */
:root{
  --ink-950:#04141A;
  --ink-900:#06191F;
  --ink-850:#0A2229;
  --ink-800:#0E2A33;
  --line-soft:rgba(255,255,255,.08);
  --line-brand:rgba(18,165,148,.28);
  --brand-600:#0F8F81;
  --brand-500:#12A594;
  --brand-300:#5FD8C6;
  --accent-500:#F0A93B;
  --text-1:#E6F1F2;
  --text-2:#9FB4B8;
  --text-3:#6C868C;
  --light-bg:#F3F7F6;
  --light-card:#FFFFFF;
  --light-text:#0B262C;
  --light-text-2:#4A646A;
  --radius-card:16px;
  --radius-glass:20px;
  --radius-btn:12px;
  --shadow-card:0 2px 8px rgba(4,20,26,.20);
  --shadow-hover:0 18px 44px rgba(4,20,26,.38);
  --glow-accent:0 0 0 1px rgba(240,169,59,.35),0 10px 30px rgba(240,169,59,.22);
  --ease:0.25s cubic-bezier(.2,.7,.3,1);
  --bs-body-bg:var(--ink-900);
  --bs-body-color:var(--text-1);
  --bs-primary:#12A594;
  --bs-border-color:rgba(255,255,255,.08);
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--text-1);
  font-family:"HarmonyOS Sans","PingFang SC","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none;transition:var(--ease);}
a:hover{color:var(--brand-300);}
img{max-width:100%;display:block;object-fit:cover;}
button,input,textarea,select{font-family:inherit;}
h1,h2,h3,h4,h5{margin:0;font-weight:600;line-height:1.28;color:var(--text-1);}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand-300);outline-offset:2px;border-radius:4px;}

.container-x{
  width:100%;
  max-width:1220px;
  margin:0 auto;
  padding:0 24px;
}
@media (max-width:991.98px){.container-x{padding:0 20px;}}
@media (max-width:575.98px){.container-x{padding:0 16px;}}

/* ============ 顶部信息条 ============ */
.topbar{
  height:34px;
  background:var(--ink-950);
  border-bottom:1px solid var(--line-soft);
  font-size:13px;
  color:var(--text-3);
}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:34px;}
.topbar-domain{display:inline-flex;align-items:center;gap:8px;letter-spacing:.04em;color:var(--text-2);}
.topbar-domain i{color:var(--brand-500);font-size:12px;}
.topbar-tip{display:inline-flex;align-items:center;gap:8px;color:var(--text-3);}
.topbar-actions{display:inline-flex;align-items:center;gap:14px;}
.topbar-actions a{color:var(--text-2);font-size:13px;}
.topbar-actions a:hover{color:var(--brand-300);}
.topbar-actions .dot{color:var(--text-3);}
@media (max-width:767.98px){.topbar-tip{display:none;}}
@media (max-width:575.98px){.topbar-actions .hide-sm{display:none;}}

/* ============ 主导航 ============ */
.main-header{
  position:sticky;top:0;z-index:1030;
  background:var(--ink-900);
  border-bottom:1px solid var(--line-soft);
  transition:var(--ease);
}
.main-header.scrolled{
  background:rgba(12,42,51,.72);
  backdrop-filter:blur(12px) saturate(140%);
  -webkit-backdrop-filter:blur(12px) saturate(140%);
  border-bottom-color:var(--line-brand);
  box-shadow:0 12px 30px rgba(4,20,26,.45);
}
.nav-shell{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:700;letter-spacing:.04em;color:var(--text-1);font-size:18px;}
.brand:hover{color:var(--text-1);}
.brand-mark{
  width:34px;height:34px;border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,var(--brand-600),var(--brand-500));
  color:#04171A;font-weight:800;font-size:17px;
  box-shadow:0 6px 18px rgba(18,165,148,.32);
}
.brand small{display:block;font-size:10px;letter-spacing:.22em;color:var(--text-3);font-weight:500;margin-top:2px;}
.main-nav{display:flex;align-items:center;gap:4px;}
.main-nav .nav-item{position:relative;}
.main-nav .nav-link{
  display:block;padding:10px 14px;border-radius:10px;
  font-size:15px;color:var(--text-2);font-weight:500;
  position:relative;transition:var(--ease);
}
.main-nav .nav-link:hover{color:var(--text-1);background:rgba(255,255,255,.04);}
.main-nav .nav-link.active{color:var(--text-1);}
.main-nav .nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  border-radius:2px;background:var(--brand-500);
  box-shadow:0 0 10px rgba(18,165,148,.7);
}
.nav-cta{display:flex;align-items:center;gap:12px;}

.btn-x{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:none;cursor:pointer;font-weight:600;letter-spacing:.02em;
  border-radius:var(--radius-btn);transition:var(--ease);white-space:nowrap;
}
.btn-primary-x{
  height:48px;padding:0 24px;background:var(--accent-500);color:#20160A;
  box-shadow:var(--glow-accent);
}
.btn-primary-x:hover{background:#F5B656;color:#20160A;transform:translateY(-2px);box-shadow:0 0 0 1px rgba(240,169,59,.5),0 16px 36px rgba(240,169,59,.3);}
.btn-primary-x:active{transform:translateY(0);}
.btn-ghost-x{
  height:48px;padding:0 22px;background:transparent;color:var(--brand-300);
  border:1px solid var(--line-brand);
}
.btn-ghost-x:hover{background:rgba(18,165,148,.08);color:var(--brand-300);transform:translateY(-2px);border-color:var(--brand-500);}
.btn-sm-x{height:40px;padding:0 18px;font-size:14px;}
.btn-text-x{
  display:inline-flex;align-items:center;gap:8px;color:var(--brand-300);
  font-weight:600;font-size:14px;background:none;border:none;padding:0;cursor:pointer;
}
.btn-text-x i{transition:transform var(--ease);}
.btn-text-x:hover i{transform:translateX(4px);}
.btn-block-x{width:100%;}

.mobile-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  background:rgba(255,255,255,.04);border:1px solid var(--line-soft);
  color:var(--text-1);font-size:18px;align-items:center;justify-content:center;cursor:pointer;
}
.nav-backdrop{display:none;}

@media (max-width:1199.98px){
  .main-nav .nav-link{padding:10px 10px;font-size:14px;}
}
@media (max-width:991.98px){
  .nav-shell{height:64px;}
  .mobile-toggle{display:inline-flex;}
  .nav-cta .btn-ghost-x{display:none;}
  .main-nav{
    position:fixed;top:0;right:0;width:300px;max-width:86vw;height:100vh;
    background:var(--ink-850);
    flex-direction:column;align-items:stretch;gap:0;
    padding:88px 18px 32px;
    transform:translateX(100%);
    transition:transform .3s cubic-bezier(.2,.7,.3,1);
    z-index:1045;overflow-y:auto;
    border-left:1px solid var(--line-soft);
  }
  .main-nav.open{transform:translateX(0);}
  .main-nav .nav-item{border-bottom:1px solid var(--line-soft);}
  .main-nav .nav-link{
    padding:14px 6px;font-size:16px;display:flex;align-items:center;justify-content:space-between;
  }
  .main-nav .nav-link::before{
    content:"\f105";font-family:"Font Awesome 6 Free";font-weight:900;
    color:var(--text-3);order:2;
  }
  .main-nav .nav-link.active::after{left:6px;right:6px;bottom:6px;}
  .nav-backdrop.show{
    display:block;position:fixed;inset:0;background:rgba(4,20,26,.66);
    backdrop-filter:blur(2px);z-index:1040;
  }
}

/* ============ 面包屑 ============ */
.crumb-bar{padding:22px 0 0;}
.breadcrumb-x{font-size:13px;color:var(--text-3);display:flex;flex-wrap:wrap;gap:8px;align-items:center;}
.breadcrumb-x a{color:var(--text-3);}
.breadcrumb-x a:hover{color:var(--brand-300);}
.breadcrumb-x .sep{color:rgba(255,255,255,.18);}
.breadcrumb-x .current{color:var(--text-3);}

/* ============ Hero ============ */
.hero-cat4{
  position:relative;overflow:hidden;
  padding:52px 0 72px;
  border-bottom:1px solid var(--line-soft);
}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  opacity:.30;
}
.hero-cat4::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(104deg,rgba(4,20,26,.94) 0%,rgba(6,25,31,.86) 46%,rgba(10,34,41,.68) 100%);
}
.hero-cat4 .container-x{position:relative;z-index:2;}
.hero-grid{display:grid;grid-template-columns:1.35fr .95fr;gap:48px;align-items:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--brand-300);font-weight:600;margin-bottom:16px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--brand-500);}
.hero-cat4 h1{
  font-size:clamp(30px,4.6vw,52px);
  font-weight:700;line-height:1.18;letter-spacing:-.01em;
}
.hero-cat4 h1 em{font-style:normal;color:var(--brand-300);}
.hero-sub{margin-top:18px;font-size:16px;color:var(--text-2);max-width:620px;line-height:1.8;}
.hero-actions{margin-top:30px;display:flex;flex-wrap:wrap;gap:14px;}
.hero-badges{margin-top:26px;display:flex;flex-wrap:wrap;gap:10px;}
.badge-x{
  display:inline-flex;align-items:center;gap:7px;
  padding:6px 13px;border-radius:999px;font-size:12px;font-weight:500;
  background:rgba(18,165,148,.12);color:var(--brand-300);
  border:1px solid rgba(18,165,148,.34);
}
.badge-x i{font-size:11px;}
.badge-x.amber{background:rgba(240,169,59,.12);color:var(--accent-500);border-color:rgba(240,169,59,.36);}

.hero-stat-card{
  border-radius:var(--radius-glass);padding:26px 26px 22px;
  background:rgba(12,42,51,.55);
  backdrop-filter:blur(12px) saturate(140%);
  -webkit-backdrop-filter:blur(12px) saturate(140%);
  border:1px solid var(--line-soft);
  box-shadow:var(--shadow-card);
  position:relative;
}
.hero-stat-card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.28),transparent);
}
.hero-stat-card h3{font-size:15px;font-weight:600;color:var(--text-1);margin-bottom:4px;}
.hero-stat-card .stat-note{font-size:13px;color:var(--text-3);margin-bottom:20px;}
.stat-row{display:flex;align-items:baseline;justify-content:space-between;gap:12px;padding:14px 0;border-bottom:1px dashed var(--line-soft);}
.stat-row:last-child{border-bottom:none;padding-bottom:0;}
.stat-row .stat-label{font-size:14px;color:var(--text-2);}
.stat-row .stat-num{
  font-size:32px;font-weight:700;color:var(--brand-300);
  font-variant-numeric:tabular-nums;line-height:1;
  font-family:Inter,"HarmonyOS Sans","PingFang SC",sans-serif;
}
.stat-row .stat-num.amber{color:var(--accent-500);font-size:26px;}
@media (max-width:991.98px){
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero-stat-card{background:var(--ink-800);backdrop-filter:none;-webkit-backdrop-filter:none;}
}
@media (max-width:575.98px){
  .hero-cat4{padding:36px 0 52px;}
  .hero-actions .btn-x{width:100%;}
}

/* ============ 板块通用 ============ */
.section{padding:96px 0;}
.section-alt{background:var(--ink-850);}
.section-light{background:var(--light-bg);color:var(--light-text);}
.section-light h2,.section-light h3,.section-light h4{color:var(--light-text);}
.section-light p{color:var(--light-text-2);}
@media (max-width:991.98px){.section{padding:72px 0;}}
@media (max-width:575.98px){.section{padding:56px 0;}}

.section-head{max-width:760px;margin-bottom:48px;}
.section-head .kicker{
  font-size:12px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--brand-500);font-weight:700;margin-bottom:12px;display:block;
}
.section-light .section-head .kicker{color:var(--brand-600);}
.section-head h2{font-size:clamp(24px,3vw,36px);font-weight:600;line-height:1.25;}
.section-head .lead{margin-top:14px;font-size:16px;color:var(--text-2);line-height:1.8;}
.section-light .section-head .lead{color:var(--light-text-2);}
.head-split{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;}

/* ============ 费用构成清单（非卡片式） ============ */
.cost-layout{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:start;}
.cost-list{border-top:1px solid var(--line-soft);}
.cost-item{
  display:grid;grid-template-columns:44px 1fr auto;gap:18px;align-items:start;
  padding:22px 6px;border-bottom:1px solid var(--line-soft);
  transition:var(--ease);
}
.cost-item:hover{background:rgba(18,165,148,.04);}
.cost-item .idx{
  font-family:Inter,sans-serif;font-size:13px;font-weight:700;color:var(--brand-500);
  padding-top:3px;letter-spacing:.06em;
}
.cost-item h3{font-size:18px;font-weight:600;margin-bottom:8px;}
.cost-item p{font-size:14px;color:var(--text-2);line-height:1.75;}
.cost-item .cost-tag{
  font-size:12px;color:var(--accent-500);border:1px solid rgba(240,169,59,.34);
  background:rgba(240,169,59,.10);border-radius:999px;padding:4px 11px;white-space:nowrap;
}
.cost-visual{border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--line-soft);position:relative;}
.cost-visual img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.cost-visual .caption{
  position:absolute;left:0;right:0;bottom:0;padding:18px 20px;
  background:linear-gradient(to top,rgba(4,20,26,.92),rgba(4,20,26,0));
  font-size:13px;color:var(--text-2);
}
@media (max-width:991.98px){.cost-layout{grid-template-columns:1fr;gap:36px;}}
@media (max-width:575.98px){
  .cost-item{grid-template-columns:32px 1fr;gap:12px;}
  .cost-item .cost-tag{grid-column:2;justify-self:start;margin-top:10px;}
}

/* ============ 对比表 ============ */
.cmp-shell{
  background:var(--light-card);border-radius:var(--radius-card);
  box-shadow:0 10px 34px rgba(4,20,26,.10);
  overflow:hidden;border:1px solid rgba(11,38,44,.06);
}
.cmp-scroll{overflow-x:auto;}
.cmp-table{width:100%;border-collapse:collapse;font-size:15px;min-width:760px;}
.cmp-table thead th{
  background:#EDF3F2;color:var(--light-text);font-weight:600;font-size:14px;
  padding:18px 20px;text-align:left;border-bottom:1px solid rgba(11,38,44,.08);
  white-space:nowrap;
}
.cmp-table thead th.col-rec{background:rgba(18,165,148,.14);color:var(--brand-600);}
.cmp-table td{
  padding:16px 20px;color:var(--light-text-2);
  border-bottom:1px solid rgba(11,38,44,.07);vertical-align:top;
}
.cmp-table td:first-child{color:var(--light-text);font-weight:600;width:210px;}
.cmp-table tbody tr:last-child td{border-bottom:none;}
.cmp-table tbody tr:hover td{background:rgba(18,165,148,.045);}
.cmp-table td.col-rec{background:rgba(18,165,148,.07);color:var(--brand-600);font-weight:600;}
.cmp-table .yes{color:var(--brand-600);font-weight:600;}
.cmp-table .no{color:#9AA8AB;}
.cmp-note{
  margin-top:18px;font-size:13px;color:var(--light-text-2);
  display:flex;align-items:flex-start;gap:10px;
}
.cmp-note i{color:var(--brand-600);margin-top:4px;}
.rec-badge{
  display:inline-block;margin-left:8px;padding:2px 9px;border-radius:999px;
  font-size:11px;font-weight:600;background:var(--accent-500);color:#221706;
}
@media (max-width:767.98px){
  .cmp-scroll{overflow:visible;}
  .cmp-table{min-width:0;display:block;font-size:14px;}
  .cmp-table thead{display:none;}
  .cmp-table tbody,.cmp-table tr,.cmp-table td{display:block;width:100%;}
  .cmp-table tr{
    border:1px solid rgba(11,38,44,.10);border-radius:14px;
    margin:0 14px 14px;padding:6px 0;background:#fff;
  }
  .cmp-table tr:first-child{margin-top:14px;}
  .cmp-table td{
    display:flex;justify-content:space-between;gap:16px;
    padding:11px 16px;border-bottom:1px dashed rgba(11,38,44,.09);
  }
  .cmp-table td:last-child{border-bottom:none;}
  .cmp-table td:first-child{width:100%;background:#F5F9F8;font-weight:700;}
  .cmp-table td::before{
    content:attr(data-label);font-weight:600;color:var(--light-text-2);
    font-size:13px;flex:0 0 auto;
  }
  .cmp-table td:first-child::before{content:attr(data-label);color:var(--brand-600);}
  .cmp-table td.col-rec{background:rgba(18,165,148,.07);}
}

/* ============ 计费规则说明 ============ */
.rules-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.rule-card{
  background:var(--ink-800);border:1px solid var(--line-soft);
  border-radius:var(--radius-card);padding:28px 26px;
  box-shadow:var(--shadow-card);transition:var(--ease);
}
.rule-card:hover{transform:translateY(-4px);border-color:var(--line-brand);box-shadow:var(--shadow-hover);}
.rule-card .rule-icon{
  width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:rgba(18,165,148,.12);color:var(--brand-300);font-size:18px;
  border:1px solid rgba(18,165,148,.24);margin-bottom:18px;
}
.rule-card h3{font-size:18px;margin-bottom:10px;}
.rule-card p{font-size:14px;color:var(--text-2);line-height:1.8;}
@media (max-width:991.98px){.rules-grid{grid-template-columns:1fr;}}

/* ============ FAQ ============ */
.faq-cols{display:grid;grid-template-columns:1fr 1fr;gap:0 48px;}
.faq-item{border-bottom:1px solid var(--line-soft);}
.faq-item summary{
  list-style:none;cursor:pointer;position:relative;
  padding:20px 6px 20px 16px;
  display:flex;align-items:flex-start;justify-content:space-between;gap:18px;
  font-size:16px;font-weight:600;color:var(--text-1);transition:var(--ease);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::before{
  content:"";position:absolute;left:0;top:16px;bottom:16px;width:3px;border-radius:3px;
  background:transparent;transition:var(--ease);
}
.faq-item summary:hover{color:var(--brand-300);}
.faq-item[open] summary::before{background:var(--brand-500);box-shadow:0 0 12px rgba(18,165,148,.65);}
.faq-item summary .faq-icon{
  flex:0 0 auto;color:var(--brand-300);font-size:15px;margin-top:4px;
  transition:transform var(--ease);
}
.faq-item[open] summary .faq-icon{transform:rotate(45deg);}
.faq-body{padding:0 6px 22px 16px;font-size:15px;color:var(--text-2);line-height:1.85;}
.faq-body .mini-list{margin-top:12px;display:grid;gap:8px;}
.faq-body .mini-list li{display:flex;gap:10px;font-size:14px;color:var(--text-2);}
.faq-body .mini-list li i{color:var(--brand-500);font-size:6px;margin-top:9px;}
@media (max-width:991.98px){.faq-cols{grid-template-columns:1fr;gap:0;}}

/* ============ 联系表单 ============ */
.contact-wrap{
  display:grid;grid-template-columns:.95fr 1.05fr;gap:56px;align-items:start;
}
.contact-intro h2{font-size:clamp(24px,3vw,34px);margin-bottom:16px;}
.contact-intro .lead{font-size:16px;color:var(--text-2);line-height:1.85;margin-bottom:28px;}
.contact-points{display:grid;gap:16px;}
.contact-points li{display:flex;gap:14px;align-items:flex-start;}
.contact-points li i{
  flex:0 0 auto;width:34px;height:34px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;font-size:14px;
  background:rgba(18,165,148,.12);color:var(--brand-300);
  border:1px solid rgba(18,165,148,.24);
}
.contact-points li strong{display:block;font-size:15px;font-weight:600;color:var(--text-1);margin-bottom:2px;}
.contact-points li span{font-size:13px;color:var(--text-3);}

.form-card{
  background:var(--ink-850);border:1px solid var(--line-soft);
  border-radius:var(--radius-card);padding:32px 30px;box-shadow:var(--shadow-card);
}
.form-card h3{font-size:19px;margin-bottom:6px;}
.form-card .form-hint{font-size:13px;color:var(--text-3);margin-bottom:24px;}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.form-field{margin-bottom:18px;}
.form-field label{display:block;font-size:13px;color:var(--text-2);margin-bottom:8px;font-weight:500;}
.form-field label .req{color:var(--accent-500);margin-left:3px;}
.form-field input,
.form-field textarea,
.form-field select{
  width:100%;background:var(--ink-800);border:1px solid var(--line-soft);
  border-radius:10px;padding:12px 14px;color:var(--text-1);font-size:15px;
  transition:var(--ease);appearance:none;
}
.form-field select{
  background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath fill='%239FB4B8' d='M6 8 0 0h12z'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 14px center;padding-right:38px;
}
.form-field textarea{min-height:112px;resize:vertical;line-height:1.7;}
.form-field input::placeholder,.form-field textarea::placeholder{color:rgba(159,180,184,.55);}
.form-field input:focus,.form-field textarea:focus,.form-field select:focus{
  outline:none;border-color:var(--brand-500);
  box-shadow:0 0 0 3px rgba(18,165,148,.18);
}
.form-agree{font-size:12px;color:var(--text-3);margin-top:14px;line-height:1.7;}
.form-status{
  display:none;margin-top:16px;padding:12px 16px;border-radius:10px;font-size:14px;
  background:rgba(18,165,148,.12);border:1px solid rgba(18,165,148,.34);color:var(--brand-300);
}
.form-status.show{display:block;}
@media (max-width:991.98px){
  .contact-wrap{grid-template-columns:1fr;gap:36px;}
  .form-row{grid-template-columns:1fr;}
}
@media (max-width:575.98px){.form-card{padding:24px 20px;}}

/* ============ 底部 CTA ============ */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--ink-950);
  border-top:1px solid var(--line-brand);
  padding:78px 0;
}
.cta-band::before{
  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:46px 46px;
  opacity:.7;
}
.cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
.cta-inner h2{font-size:clamp(22px,2.7vw,32px);max-width:620px;}
.cta-inner p{margin-top:12px;font-size:15px;color:var(--text-2);max-width:560px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}
@media (max-width:575.98px){.cta-actions .btn-x{width:100%;}}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--ink-950);
  border-top:1px solid var(--line-brand);
  padding:64px 0 26px;
  font-size:14px;
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:44px;
  padding-bottom:40px;border-bottom:1px solid var(--line-soft);
}
.footer-brand .brand{margin-bottom:18px;}
.footer-brand p{font-size:14px;color:var(--text-2);line-height:1.8;max-width:380px;}
.footer-contact{margin-top:20px;display:grid;gap:10px;}
.footer-contact span{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--text-3);}
.footer-contact i{color:var(--brand-500);margin-top:5px;font-size:12px;}
.footer-col h4{font-size:15px;font-weight:600;color:var(--text-1);margin-bottom:18px;letter-spacing:.02em;}
.footer-col ul{display:grid;gap:12px;}
.footer-col a{font-size:14px;color:var(--text-2);}
.footer-col a:hover{color:var(--brand-300);}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding-top:22px;font-size:13px;color:var(--text-3);
}
@media (max-width:991.98px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .footer-brand{grid-column:1 / -1;}
}
@media (max-width:575.98px){
  .footer-grid{grid-template-columns:1fr;}
  .site-footer{padding:48px 0 22px;}
}