/* roulang page: index */
:root{
  --brand:#12C9B6;
  --brand-deep:#0B8F82;
  --brand-soft:rgba(18,201,182,.10);
  --accent:#FF7A2F;
  --highlight:#FFD34D;
  --ink-900:#14111F;
  --ink-700:#2C2740;
  --ink-500:#5A5570;
  --ink-300:#9C97AE;
  --bg-page:#F6F7FB;
  --bg-card:#FFFFFF;
  --bg-deep:#171326;
  --bg-deep-2:#221A3A;
  --line:#E6E7EF;
  --line-soft:#F0F1F6;
  --ok:#1FA97A;
  --warn:#E5A100;
  --err:#E1543F;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:12px;
  --radius-pill:999px;
  --shadow-card:0 1px 2px rgba(20,17,31,.04),0 8px 24px rgba(20,17,31,.06);
  --shadow-hover:0 12px 32px rgba(20,17,31,.12);
  --ease:200ms cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:'PingFang SC','HarmonyOS Sans SC','Source Han Sans SC','Microsoft YaHei',system-ui,sans-serif;
  font-size:17px;line-height:1.9;color:var(--ink-700);
  background:var(--bg-page);
  text-align:start;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit}
input,textarea,select{font-family:inherit;font-size:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
h1,h2,h3,h4{color:var(--ink-900);letter-spacing:-0.02em}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
.num{font-variant-numeric:tabular-nums;font-family:'JetBrains Mono',Consolas,monospace}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.section{padding:72px 0}
.section-head{max-width:760px;margin-bottom:36px}
.section-head h2{font-size:30px;line-height:1.4;font-weight:700;margin-bottom:14px}
.section-head p{font-size:16px;color:var(--ink-500);line-height:1.9}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.04em;color:var(--brand-deep);background:var(--brand-soft);border-radius:var(--radius-pill);padding:5px 14px;margin-bottom:16px}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand)}

/* ============ 按钮 ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:40px;padding:0 24px;border-radius:var(--radius-btn);font-size:15px;font-weight:600;transition:transform var(--ease),background var(--ease),color var(--ease),box-shadow var(--ease);white-space:nowrap}
.btn-lg{height:48px;padding:0 28px;font-size:16px}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 18px rgba(18,201,182,.28)}
.btn-primary:hover{background:var(--brand-deep);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px);filter:brightness(.96)}
.btn-outline{border:1.5px solid var(--brand);color:var(--brand-deep);background:transparent}
.btn-outline:hover{background:var(--brand-soft);transform:translateY(-1px)}
.btn-ghost{border:1.5px solid rgba(255,255,255,.42);color:#fff;background:transparent}
.btn-ghost:hover{background:rgba(255,255,255,.12)}
.btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--brand-deep);font-weight:600;font-size:15px;transition:gap var(--ease),color var(--ease)}
.btn-text::after{content:"→";transition:transform var(--ease)}
.btn-text:hover{gap:10px}
.btn-text:hover::after{transform:translateX(3px)}
.btn-block{width:100%}
.btn[disabled]{opacity:.45;box-shadow:none;transform:none}

/* ============ 导航 ============ */
.site-header{position:sticky;top:0;z-index:120;background:rgba(255,255,255,.92);backdrop-filter:saturate(160%) blur(8px);border-bottom:1px solid transparent;transition:box-shadow var(--ease),border-color var(--ease),background var(--ease)}
.site-header.scrolled{background:#fff;border-bottom-color:var(--line);box-shadow:0 4px 16px rgba(20,17,31,.06)}
.header-top-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:56px;transition:height var(--ease)}
.site-header.scrolled .header-top-inner{height:52px}
.logo{display:inline-flex;align-items:center;gap:10px;font-size:18px;font-weight:800;color:var(--ink-900);letter-spacing:-.01em;transition:transform var(--ease)}
.site-header.scrolled .logo{transform:scale(.96)}
.logo-mark{width:12px;height:12px;border-radius:3px;background:linear-gradient(135deg,var(--brand),var(--accent));flex:0 0 auto;transform:rotate(45deg)}
.logo-abbr{display:none}
.hot-tags{display:flex;align-items:center;gap:8px}
.hot-tag{font-size:13px;letter-spacing:.04em;padding:5px 13px;border-radius:var(--radius-pill);background:var(--brand-soft);color:var(--brand-deep);transition:background var(--ease),color var(--ease)}
.hot-tag:hover{background:var(--brand);color:#fff}
.header-actions{display:flex;align-items:center;gap:12px}
.icon-btn{display:inline-flex;align-items:center;gap:8px;height:38px;padding:0 16px;border-radius:var(--radius-pill);border:1px solid var(--line);font-size:14px;color:var(--ink-500);transition:border-color var(--ease),color var(--ease),background var(--ease)}
.icon-btn:hover{border-color:var(--brand);color:var(--brand-deep);background:var(--brand-soft)}
.hamburger{display:none;width:40px;height:40px;border-radius:var(--radius-btn);border:1px solid var(--line);align-items:center;justify-content:center}
.hamburger span{display:block;width:18px;height:2px;background:var(--ink-700);position:relative;transition:background var(--ease)}
.hamburger span::before,.hamburger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink-700);transition:transform var(--ease)}
.hamburger span::before{top:-6px}
.hamburger span::after{top:6px}
.header-nav{border-top:1px solid var(--line-soft);transition:height var(--ease)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:48px;transition:height var(--ease)}
.site-header.scrolled .nav-inner{height:44px}
.main-nav{display:flex;align-items:center;gap:4px;height:100%}
.main-nav a{position:relative;height:100%;display:inline-flex;align-items:center;padding:0 16px;font-size:15px;color:var(--ink-500);transition:color var(--ease)}
.main-nav a::after{content:"";position:absolute;left:16px;right:16px;bottom:0;height:2px;background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform var(--ease)}
.main-nav a:hover{color:var(--ink-900)}
.main-nav a.active{color:var(--ink-900);font-weight:600}
.main-nav a.active::after{transform:scaleX(1)}
.nav-search{display:flex;align-items:center;gap:8px;width:260px;height:36px;border-radius:var(--radius-pill);background:var(--bg-page);border:1px solid transparent;padding:0 16px;transition:border-color var(--ease),background var(--ease)}
.nav-search:focus-within{border-color:var(--brand);background:#fff}
.nav-search input{flex:1;border:0;background:transparent;outline:none;font-size:14px;color:var(--ink-700)}
.nav-search input::placeholder{color:var(--ink-300)}
.nav-search svg{flex:0 0 auto;color:var(--ink-300)}

/* 移动抽屉 */
.drawer-mask{position:fixed;inset:0;background:rgba(20,17,31,.55);opacity:0;visibility:hidden;transition:opacity var(--ease),visibility var(--ease);z-index:200}
.drawer-mask.open{opacity:1;visibility:visible}
.drawer{position:fixed;top:0;right:0;height:100%;width:min(84vw,360px);background:#fff;z-index:210;transform:translateX(102%);transition:transform 260ms cubic-bezier(.2,.7,.3,1);display:flex;flex-direction:column;padding:22px 22px 26px}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line-soft)}
.drawer-head strong{font-size:16px;color:var(--ink-900)}
.drawer-close{width:34px;height:34px;border-radius:50%;background:var(--bg-page);display:inline-flex;align-items:center;justify-content:center;font-size:18px;color:var(--ink-500)}
.drawer-list{margin-top:10px;flex:1;overflow-y:auto}
.drawer-list a{display:flex;align-items:center;justify-content:space-between;height:48px;font-size:16px;color:var(--ink-700);border-bottom:1px solid var(--line-soft)}
.drawer-list a.active{color:var(--brand-deep);font-weight:600}
.drawer-foot{padding-top:16px}

/* ============ Hero ============ */
.hero{position:relative;background:linear-gradient(180deg,#FFFFFF 0%,#F6F7FB 100%);overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(20,17,31,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(20,17,31,.035) 1px,transparent 1px);background-size:56px 56px;pointer-events:none}
.hero-inner{position:relative;display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;padding:76px 0 80px}
.hero h1{font-size:40px;line-height:1.3;font-weight:800;margin-bottom:20px}
.hero h1 em{font-style:normal;color:var(--brand-deep)}
.hero-sub{font-size:18px;line-height:1.85;color:var(--ink-500);max-width:560px;margin-bottom:28px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:34px}
.hero-stats{display:flex;gap:40px;flex-wrap:wrap;padding-top:26px;border-top:1px solid var(--line)}
.hero-stat .v{font-size:28px;font-weight:800;color:var(--ink-900);line-height:1.2;font-variant-numeric:tabular-nums}
.hero-stat .v small{font-size:15px;font-weight:600;color:var(--brand-deep);margin-left:2px}
.hero-stat .k{font-size:13px;color:var(--ink-300);letter-spacing:.04em;margin-top:4px}
.hero-media{position:relative}
.hero-media img{width:100%;border-radius:20px;box-shadow:0 24px 60px rgba(20,17,31,.16);aspect-ratio:4/3;object-fit:cover}
.hero-media-bar{margin-top:14px;display:flex;align-items:center;gap:10px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-pill);padding:10px 18px;font-size:14px;color:var(--ink-500);box-shadow:var(--shadow-card)}
.hero-media-bar i{width:8px;height:8px;border-radius:50%;background:var(--brand);flex:0 0 auto}
.hero-media-bar b{color:var(--ink-900);font-weight:600}

/* ============ 痛点区 ============ */
.pain-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.pain-card{position:relative;background:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius-card);padding:24px 26px 24px 30px;transition:box-shadow var(--ease),transform var(--ease),border-color var(--ease)}
.pain-card::before{content:"";position:absolute;left:0;top:22px;bottom:22px;width:3px;border-radius:3px;background:var(--brand)}
.pain-card h3{font-size:18px;line-height:1.6;font-weight:600;margin-bottom:8px}
.pain-card p{font-size:15px;line-height:1.8;color:var(--ink-500)}
.pain-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px);border-color:var(--brand-soft)}

/* ============ 方案区 ============ */
.solution-top{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.solution-wide{display:grid;grid-template-columns:minmax(0,44%) minmax(0,56%);background:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-card);transition:box-shadow var(--ease),transform var(--ease)}
.solution-wide:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px)}
.solution-wide .thumb{overflow:hidden}
.solution-wide .thumb img{width:100%;height:100%;min-height:280px;object-fit:cover;transition:transform 420ms cubic-bezier(.2,.7,.3,1)}
.solution-wide:hover .thumb img{transform:scale(1.03)}
.solution-wide .body{padding:34px 32px;display:flex;flex-direction:column;justify-content:center}
.solution-col{display:grid;grid-template-rows:1fr 1fr;gap:24px}
.solution-mini{background:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius-card);padding:26px;box-shadow:var(--shadow-card);transition:box-shadow var(--ease),transform var(--ease);display:flex;flex-direction:column}
.solution-mini:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px)}
.solution-bottom{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:24px}
.solution-row{display:grid;grid-template-columns:minmax(0,42%) minmax(0,58%);background:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-card);transition:box-shadow var(--ease),transform var(--ease)}
.solution-row.rev{grid-template-columns:minmax(0,58%) minmax(0,42%)}
.solution-row.rev .thumb{order:2}
.solution-row:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px)}
.solution-row .thumb{overflow:hidden}
.solution-row .thumb img{width:100%;height:100%;min-height:220px;object-fit:cover;transition:transform 420ms cubic-bezier(.2,.7,.3,1)}
.solution-row:hover .thumb img{transform:scale(1.03)}
.solution-row .body{padding:28px 26px;display:flex;flex-direction:column;justify-content:center}
.sol-icon{width:44px;height:44px;border-radius:12px;border:1.5px solid var(--brand);display:inline-flex;align-items:center;justify-content:center;color:var(--brand-deep);margin-bottom:16px;background:var(--brand-soft)}
.sol-icon svg{width:20px;height:20px}
.solution-card h3,.solution-wide h3{font-size:22px;line-height:1.5;font-weight:700;margin-bottom:10px}
.solution-card p,.solution-wide p{font-size:15px;line-height:1.8;color:var(--ink-500);margin-bottom:18px}
.solution-card .btn-text,.solution-wide .btn-text{margin-top:auto}

/* ============ 数据区 ============ */
.deep-band{background:linear-gradient(160deg,#171326,#221A3A);position:relative;overflow:hidden;color:#fff}
.deep-band::after{content:"";position:absolute;right:-140px;top:-140px;width:520px;height:520px;border-radius:50%;background:radial-gradient(circle,rgba(18,201,182,.28),transparent 68%);pointer-events:none}
.deep-band::before{content:"";position:absolute;inset:0;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:52px 52px;pointer-events:none}
.deep-inner{position:relative;z-index:2;display:grid;grid-template-columns:8fr 4fr;gap:44px;align-items:center}
.deep-inner h2{color:#fff;font-size:30px;line-height:1.4;margin-bottom:14px}
.deep-inner .lead{color:rgba(255,255,255,.72);font-size:16px;line-height:1.9;max-width:620px}
.data-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:36px}
.data-cell{background:rgba(255,255,255,.045);border:1px solid rgba(255,255,255,.09);border-radius:var(--radius-card);padding:22px 20px}
.data-cell .v{font-size:42px;line-height:1.1;font-weight:800;color:var(--brand);font-variant-numeric:tabular-nums}
.data-cell:nth-child(2n) .v{color:var(--accent)}
.data-cell .k{margin-top:10px;font-size:14px;color:rgba(255,255,255,.66);line-height:1.7}
.deep-figure{border-radius:18px;overflow:hidden;border:1px solid rgba(255,255,255,.1)}
.deep-figure img{width:100%;aspect-ratio:3/4;object-fit:cover;opacity:.72}
.deep-figure figcaption{background:rgba(255,255,255,.05);color:rgba(255,255,255,.68);font-size:13px;padding:12px 16px;line-height:1.7}

/* ============ 资讯列表 ============ */
.filter-row{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:28px}
.filter-chip{font-size:14px;padding:8px 18px;border-radius:var(--radius-pill);border:1px solid var(--line);color:var(--ink-500);background:#fff;transition:all var(--ease)}
.filter-chip:hover{border-color:var(--brand);color:var(--brand-deep)}
.filter-chip.active{background:var(--brand);border-color:var(--brand);color:#fff;box-shadow:0 6px 16px rgba(18,201,182,.24)}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{display:flex;flex-direction:column;background:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-card);transition:box-shadow var(--ease),transform var(--ease)}
.news-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px)}
.news-cover{position:relative;overflow:hidden;aspect-ratio:16/9;background:var(--line-soft)}
.news-cover img{width:100%;height:100%;object-fit:cover;transition:transform 420ms cubic-bezier(.2,.7,.3,1)}
.news-card:hover .news-cover img{transform:scale(1.03)}
.news-badge{position:absolute;left:12px;top:12px;font-size:12px;letter-spacing:.04em;padding:4px 12px;border-radius:var(--radius-pill);background:rgba(20,17,31,.72);color:#fff;backdrop-filter:blur(4px)}
.news-body{padding:20px 22px 18px;display:flex;flex-direction:column;flex:1}
.news-body h3{font-size:18px;line-height:1.55;font-weight:700;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-body p{font-size:15px;line-height:1.8;color:var(--ink-500);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:16px}
.news-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;padding-top:14px;border-top:1px solid var(--line-soft);font-size:13px;color:var(--ink-300)}
.news-meta .go{display:inline-flex;align-items:center;gap:5px;color:var(--brand-deep);font-weight:600}
.news-meta .go::after{content:"→";transition:transform var(--ease)}
.news-card:hover .news-meta .go::after{transform:translateX(3px)}
.empty-state{grid-column:1/-1;text-align:center;padding:56px 24px;background:#fff;border:1px dashed var(--line);border-radius:var(--radius-card)}
.empty-state .line-art{width:88px;height:88px;margin:0 auto 18px;border-radius:22px;border:1.5px dashed var(--brand);background:var(--brand-soft);display:flex;align-items:center;justify-content:center;color:var(--brand-deep)}
.empty-state p{color:var(--ink-500);font-size:15px;margin-bottom:18px}

/* ============ FAQ ============ */
.faq-wrap{max-width:860px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:14px;margin-bottom:12px;overflow:hidden;transition:border-color var(--ease),box-shadow var(--ease)}
.faq-item.open{border-color:var(--brand-soft);box-shadow:var(--shadow-card)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:20px 24px;text-align:left;font-size:17px;font-weight:600;color:var(--ink-900);transition:color var(--ease)}
.faq-item.open .faq-q{color:var(--brand-deep)}
.faq-sign{position:relative;flex:0 0 auto;width:20px;height:20px}
.faq-sign::before,.faq-sign::after{content:"";position:absolute;background:currentColor;border-radius:2px;transition:transform var(--ease),opacity var(--ease)}
.faq-sign::before{left:0;top:9px;width:20px;height:2px}
.faq-sign::after{left:9px;top:0;width:2px;height:20px}
.faq-item.open .faq-sign::after{transform:rotate(90deg);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height 260ms cubic-bezier(.2,.7,.3,1)}
.faq-a p{padding:0 24px 22px;font-size:15px;line-height:1.9;color:var(--ink-500)}

/* ============ 使用须知 / 隐私条 ============ */
.notice-band{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.notice-inner{display:grid;grid-template-columns:auto 1fr auto;gap:24px;align-items:center;padding:26px 0}
.notice-icon{width:42px;height:42px;border-radius:12px;background:var(--brand-soft);color:var(--brand-deep);display:flex;align-items:center;justify-content:center;flex:0 0 auto}
.notice-inner p{font-size:15px;line-height:1.85;color:var(--ink-500)}
.notice-inner p strong{color:var(--ink-900)}

/* ============ CTA ============ */
.cta-band{background:linear-gradient(120deg,rgba(18,201,182,.10),rgba(255,122,47,.10));border:1px solid var(--line);border-radius:20px;padding:48px;display:grid;grid-template-columns:1fr auto;gap:32px;align-items:center}
.cta-band h2{font-size:28px;line-height:1.4;margin-bottom:12px}
.cta-band p{font-size:16px;color:var(--ink-500);max-width:640px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ============ 弹层表单 ============ */
.modal-mask{position:fixed;inset:0;background:rgba(20,17,31,.55);z-index:300;display:flex;align-items:center;justify-content:center;padding:24px;opacity:0;visibility:hidden;transition:opacity var(--ease),visibility var(--ease)}
.modal-mask.open{opacity:1;visibility:visible}
.modal{width:100%;max-width:480px;background:#fff;border-radius:20px;padding:32px;position:relative;transform:translateY(14px) scale(.98);transition:transform 260ms cubic-bezier(.2,.7,.3,1);max-height:90vh;overflow-y:auto}
.modal-mask.open .modal{transform:translateY(0) scale(1)}
.modal h3{font-size:22px;font-weight:700;margin-bottom:8px}
.modal .desc{font-size:14px;line-height:1.8;color:var(--ink-500);margin-bottom:24px}
.modal-close{position:absolute;right:18px;top:18px;width:32px;height:32px;border-radius:50%;background:var(--bg-page);color:var(--ink-500);display:flex;align-items:center;justify-content:center;font-size:18px;line-height:1;transition:background var(--ease)}
.modal-close:hover{background:var(--line)}
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;font-weight:600;color:var(--ink-700);margin-bottom:8px}
.field input,.field textarea{width:100%;height:48px;border:1px solid var(--line);border-radius:var(--radius-btn);padding:0 14px;background:#fff;outline:none;transition:border-color var(--ease),background var(--ease),box-shadow var(--ease)}
.field textarea{height:96px;padding:12px 14px;line-height:1.7;resize:vertical}
.field input:focus,.field textarea:focus{border-color:var(--brand);background:rgba(18,201,182,.05);box-shadow:0 0 0 3px rgba(18,201,182,.12)}
.field.invalid input{border-color:var(--err)}
.field .err-msg{display:none;font-size:12px;color:var(--err);margin-top:6px}
.field.invalid .err-msg{display:block}
.agree{display:flex;align-items:flex-start;gap:10px;font-size:13px;line-height:1.7;color:var(--ink-500);margin-bottom:22px}
.agree input{width:16px;height:16px;margin-top:3px;accent-color:var(--brand);flex:0 0 auto}
.agree a{color:var(--brand-deep);text-decoration:underline}

/* ============ 页脚 ============ */
.site-footer{background:var(--bg-deep);color:rgba(255,255,255,.7);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.3fr;gap:40px;padding-bottom:48px}
.footer-brand .logo{color:#fff;margin-bottom:16px}
.footer-brand p{font-size:14px;line-height:1.9;color:rgba(255,255,255,.62);max-width:320px;margin-bottom:16px}
.footer-contact{font-size:13px;color:rgba(255,255,255,.5);letter-spacing:.02em}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:18px}
.footer-col li{margin-bottom:12px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.62);transition:color var(--ease),padding-left var(--ease)}
.footer-col a:hover{color:var(--brand);padding-left:4px}
.footer-sub p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.6);margin-bottom:14px}
.footer-sub form{display:flex;gap:10px}
.footer-sub input{flex:1;height:46px;border-radius:var(--radius-btn);border:1px solid rgba(255,255,255,.16);background:rgba(255,255,255,.06);padding:0 14px;color:#fff;outline:none;font-size:14px;transition:border-color var(--ease)}
.footer-sub input::placeholder{color:rgba(255,255,255,.38)}
.footer-sub input:focus{border-color:var(--brand)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:22px 0;display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.42)}

/* ============ 响应式 ============ */
@media (max-width:1439px){
  .container{max-width:1280px}
}
@media (max-width:1199px){
  .container{padding:0 24px;max-width:1080px}
  .hero-inner{grid-template-columns:1fr;gap:36px;padding:60px 0 64px}
  .hero-media img{aspect-ratio:16/9}
  .deep-inner{grid-template-columns:1fr;gap:32px}
  .deep-figure img{aspect-ratio:16/9}
  .data-grid{grid-template-columns:repeat(2,1fr)}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .hot-tags{display:none}
  .nav-search{width:200px}
}
@media (max-width:991px){
  .container{padding:0 24px}
  .hot-tags,.nav-search{display:none}
  .hamburger{display:inline-flex}
  .header-nav{display:none}
  .header-top-inner{height:60px}
  .hero h1{font-size:34px}
  .section{padding:56px 0}
  .pain-grid{grid-template-columns:1fr}
  .solution-top{grid-template-columns:1fr}
  .solution-bottom{grid-template-columns:1fr}
  .solution-row,.solution-row.rev{grid-template-columns:1fr}
  .solution-row.rev .thumb{order:0}
  .solution-row .thumb img{min-height:200px;aspect-ratio:16/9}
  .cta-band{grid-template-columns:1fr;padding:36px 28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .footer-sub{order:-1;grid-column:1/-1}
  .notice-inner{grid-template-columns:auto 1fr;gap:16px}
  .notice-inner .btn{grid-column:1/-1}
}
@media (max-width:767px){
  body{font-size:16px}
  .container{padding:0 16px}
  .section{padding:44px 0}
  .hero-inner{padding:44px 0 48px}
  .hero h1{font-size:28px;line-height:1.35}
  .hero-sub{font-size:16px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .hero-stats{gap:24px}
  .hero-stat{min-width:calc(50% - 12px)}
  .section-head h2,.deep-inner h2,.cta-band h2{font-size:24px}
  .data-cell .v{font-size:34px}
  .news-grid{grid-template-columns:1fr}
  .news-cover{aspect-ratio:16/10}
  .faq-q{font-size:16px;padding:18px 18px}
  .faq-a p{padding:0 18px 20px}
  .modal-mask{align-items:flex-end;padding:0}
  .modal{max-width:100%;border-radius:20px 20px 0 0;padding:24px;transform:translateY(100%)}
  .modal-mask.open .modal{transform:translateY(0)}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .cta-band{padding:28px 20px}
  .cta-actions{flex-direction:column;align-items:stretch}
  .cta-actions .btn{width:100%}
}
@media (max-width:480px){
  body{font-size:15px}
  .hero h1{font-size:26px}
  .logo{font-size:16px}
  .solution-wide{grid-template-columns:1fr}
  .solution-wide .thumb img{min-height:180px;aspect-ratio:16/10}
  .solution-wide .body{padding:24px 20px}
  .solution-mini,.solution-row .body{padding:22px 20px}
  .data-grid{grid-template-columns:1fr}
  .hero-media-bar{font-size:13px}
}

/* roulang page: category1 */
:root{
  --brand:#12C9B6;
  --brand-deep:#0B8F82;
  --brand-soft:rgba(18,201,182,.10);
  --accent:#FF7A2F;
  --highlight:#FFD34D;
  --ink-900:#14111F;
  --ink-700:#2C2740;
  --ink-500:#5A5570;
  --ink-300:#9C97AE;
  --bg-page:#F6F7FB;
  --bg-card:#FFFFFF;
  --bg-deep:#171326;
  --line:#E6E7EF;
  --line-soft:#F0F1F6;
  --ok:#1FA97A;
  --warn:#E5A100;
  --err:#E1543F;
  --r-card:16px;
  --r-btn:10px;
  --r-img:12px;
  --r-pill:999px;
  --sh-card:0 1px 2px rgba(20,17,31,.04), 0 8px 24px rgba(20,17,31,.06);
  --sh-hover:0 12px 32px rgba(20,17,31,.12);
  --ease:200ms cubic-bezier(.2,.7,.3,1);
  --c-gap:24px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:'PingFang SC','HarmonyOS Sans SC','Source Han Sans SC','Microsoft YaHei',system-ui,sans-serif;
  background:var(--bg-page);
  color:var(--ink-700);
  font-size:17px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:var(--brand-deep);text-decoration:none;transition:color var(--ease)}
a:hover{color:var(--brand)}
button{font-family:inherit;cursor:pointer}
input{font-family:inherit}
h1,h2,h3,h4{margin:0;color:var(--ink-900);letter-spacing:-.02em;font-weight:700}
h1{font-size:40px;line-height:1.3;font-weight:800}
h2{font-size:30px;line-height:1.4}
h3{font-size:22px;line-height:1.5}
h4{font-size:18px;line-height:1.6;font-weight:600}
p{margin:0 0 1.1em}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
.container{max-width:1200px;margin:0 auto;padding:0 32px}
.num{font-variant-numeric:tabular-nums;font-family:'JetBrains Mono',Consolas,monospace}

/* ============ 顶部导航 ============ */
.site-header{position:sticky;top:0;z-index:80;background:#fff;border-bottom:1px solid var(--line-soft);transition:box-shadow var(--ease),background var(--ease)}
.site-header.is-stuck{box-shadow:0 4px 16px rgba(20,17,31,.06);border-bottom-color:var(--line)}
.header-top{border-bottom:1px solid var(--line-soft)}
.header-top .container{display:flex;align-items:center;gap:20px;height:56px;transition:height var(--ease)}
.site-header.is-stuck .header-top .container{height:52px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--ink-900);font-size:17px;letter-spacing:-.01em;white-space:nowrap}
.logo-mark{width:12px;height:12px;border-radius:3px;background:linear-gradient(135deg,var(--brand),var(--brand-deep));box-shadow:0 0 0 4px var(--brand-soft);flex:none}
.logo:hover{color:var(--ink-900)}
.hot-tags{display:flex;gap:8px;margin-left:auto}
.hot-tags a{display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:var(--r-pill);background:var(--brand-soft);color:var(--brand-deep);font-size:13px;letter-spacing:.04em;transition:background var(--ease),color var(--ease)}
.hot-tags a:hover{background:var(--brand);color:#fff}
.icon-btn{display:inline-flex;align-items:center;gap:7px;height:36px;padding:0 14px;border-radius:var(--r-pill);border:1px solid var(--line);background:#fff;color:var(--ink-500);font-size:14px}
.icon-btn:hover{border-color:var(--brand);color:var(--brand-deep)}
.nav-toggle{display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:#fff;align-items:center;justify-content:center;flex-direction:column;gap:4px}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink-700);border-radius:2px}
.header-main .container{display:flex;align-items:center;gap:20px;height:48px;transition:height var(--ease)}
.site-header.is-stuck .header-main .container{height:44px}
.main-nav{display:flex;align-items:center;gap:6px;flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none}
.main-nav::-webkit-scrollbar{display:none}
.main-nav a{position:relative;display:inline-flex;align-items:center;height:48px;padding:0 14px;font-size:15px;color:var(--ink-500);white-space:nowrap;transition:color var(--ease)}
.main-nav a:hover{color:var(--ink-900)}
.main-nav a.active{color:var(--ink-900);font-weight:700}
.main-nav a.active::after{content:"";position:absolute;left:14px;right:14px;bottom:0;height:2px;background:var(--brand);border-radius:2px}
.search-box{margin-left:auto;display:flex;align-items:center;height:36px;border-radius:var(--r-pill);background:var(--bg-page);border:1px solid transparent;padding:0 14px;transition:border-color var(--ease),background var(--ease);min-width:220px}
.search-box:focus-within{border-color:var(--brand);background:#fff}
.search-box input{border:none;background:transparent;outline:none;font-size:14px;color:var(--ink-700);width:100%}
.search-box input::placeholder{color:var(--ink-300)}
.search-box svg{flex:none;margin-right:8px;color:var(--ink-300)}
.drawer{position:fixed;top:0;right:0;height:100%;width:min(84vw,360px);background:#fff;z-index:120;transform:translateX(102%);transition:transform 260ms cubic-bezier(.2,.7,.3,1);display:flex;flex-direction:column;box-shadow:-12px 0 40px rgba(20,17,31,.18)}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:18px 20px;border-bottom:1px solid var(--line-soft)}
.drawer-head .logo{font-size:16px}
.drawer-close{width:32px;height:32px;border-radius:50%;border:none;background:var(--bg-page);color:var(--ink-500);font-size:18px;line-height:1}
.drawer-body{padding:10px 12px;overflow-y:auto;flex:1}
.drawer-body a{display:flex;align-items:center;height:48px;padding:0 14px;border-radius:10px;color:var(--ink-700);font-size:15px}
.drawer-body a:hover{background:var(--brand-soft);color:var(--brand-deep)}
.drawer-body a.active{background:var(--brand-soft);color:var(--brand-deep);font-weight:700}
.drawer-foot{padding:16px 20px;border-top:1px solid var(--line-soft)}
.overlay{position:fixed;inset:0;background:rgba(20,17,31,.55);z-index:110;opacity:0;visibility:hidden;transition:opacity var(--ease),visibility var(--ease)}
.overlay.open{opacity:1;visibility:visible}

/* ============ 按钮 ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:40px;padding:0 24px;border-radius:var(--r-btn);font-size:15px;font-weight:600;border:1.5px solid transparent;transition:background var(--ease),color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease)}
.btn-lg{height:48px}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 18px rgba(18,201,182,.28)}
.btn-primary:hover{background:var(--brand-deep);color:#fff;transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px);filter:brightness(.96)}
.btn-outline{background:transparent;border-color:var(--brand);color:var(--brand-deep)}
.btn-outline:hover{background:var(--brand-soft);color:var(--brand-deep)}
.btn-ghost{background:transparent;border-color:rgba(255,255,255,.45);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff}
.btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--brand-deep);font-weight:600;font-size:15px}
.btn-text .arw{transition:transform var(--ease)}
.btn-text:hover .arw{transform:translateX(3px)}
.btn[disabled]{opacity:.45;box-shadow:none;transform:none;pointer-events:none}

/* ============ 页面头 ============ */
.crumb{padding:20px 0 0;font-size:14px;color:var(--ink-300)}
.crumb a{color:var(--ink-500)}
.crumb span.sep{margin:0 8px;color:var(--ink-300)}
.page-hero{position:relative;margin-top:18px;border-radius:20px;overflow:hidden;background:linear-gradient(160deg,#171326,#221A3A);color:#fff}
.page-hero::after{content:"";position:absolute;inset:0;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:42px 42px;pointer-events:none}
.page-hero-inner{position:relative;z-index:2;padding:52px 48px;max-width:720px}
.page-hero .kicker{display:inline-flex;align-items:center;gap:8px;height:28px;padding:0 14px;border-radius:var(--r-pill);background:rgba(18,201,182,.16);color:#7FF0E4;font-size:13px;letter-spacing:.04em;margin-bottom:18px}
.page-hero h1{color:#fff;margin-bottom:16px}
.page-hero .lead{color:rgba(255,255,255,.76);font-size:17px;line-height:1.8;margin:0;max-width:620px}
.hero-bg{position:absolute;right:0;top:0;bottom:0;width:44%;background-image:url(/assets/images/backpic/back-1.png);background-size:cover;background-position:center;opacity:.34;-webkit-mask-image:linear-gradient(90deg,transparent,#000 42%);mask-image:linear-gradient(90deg,transparent,#000 42%)}

/* ============ 数据条 ============ */
.stat-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--c-gap);margin-top:24px}
.stat-strip .stat{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:20px 22px;box-shadow:var(--sh-card)}
.stat .v{font-size:32px;font-weight:800;color:var(--brand-deep);line-height:1.2}
.stat .v.orange{color:var(--accent)}
.stat .k{font-size:14px;color:var(--ink-500);margin-top:4px}

/* ============ 主体：左锚点 + 右分组 ============ */
.layout{display:grid;grid-template-columns:240px 1fr;gap:32px;margin-top:48px;align-items:start}
.anchor-side{position:sticky;top:120px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:20px 16px;box-shadow:var(--sh-card)}
.anchor-side h4{font-size:14px;color:var(--ink-300);letter-spacing:.08em;font-weight:600;padding:0 10px 10px;border-bottom:1px solid var(--line-soft);margin-bottom:10px}
.anchor-side a{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:9px 10px;border-radius:8px;font-size:14px;color:var(--ink-500);border-left:3px solid transparent;transition:all var(--ease)}
.anchor-side a:hover{background:var(--bg-page);color:var(--ink-900)}
.anchor-side a.current{background:var(--brand-soft);color:var(--brand-deep);border-left-color:var(--brand);font-weight:600}
.anchor-side .side-note{margin-top:14px;padding:14px 12px;border-radius:12px;background:var(--bg-page);font-size:13px;line-height:1.7;color:var(--ink-500)}
.anchor-side .side-note strong{color:var(--ink-900);display:block;margin-bottom:4px;font-size:14px}

.group{margin-bottom:44px}
.group-head{display:flex;align-items:flex-start;gap:14px;margin-bottom:20px}
.group-head .gh-mark{width:34px;height:34px;flex:none;border-radius:10px;background:var(--brand-soft);color:var(--brand-deep);display:flex;align-items:center;justify-content:center;font-weight:800;font-size:15px}
.group-head h2{font-size:24px;line-height:1.4}
.group-head p{margin:6px 0 0;font-size:15px;color:var(--ink-500);line-height:1.8}

.entry-list{display:flex;flex-direction:column;gap:12px}
.entry{display:grid;grid-template-columns:48px 1fr auto;gap:18px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:18px 22px;box-shadow:var(--sh-card);transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease)}
.entry:hover{transform:translateY(-3px);box-shadow:var(--sh-hover);border-color:var(--brand-soft)}
.entry-ico{width:48px;height:48px;border-radius:12px;background:var(--bg-page);display:flex;align-items:center;justify-content:center;color:var(--brand-deep)}
.entry-ico svg{width:22px;height:22px}
.entry-body h3{font-size:18px;font-weight:700;line-height:1.5;margin-bottom:4px}
.entry-body p{margin:0;font-size:15px;line-height:1.8;color:var(--ink-500)}
.entry-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}
.tag{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-pill);background:var(--brand-soft);color:var(--brand-deep);font-size:12.5px;letter-spacing:.04em}
.tag.warn{background:rgba(255,122,47,.12);color:#C1501A}
.tag.mute{background:var(--bg-page);color:var(--ink-500)}
.entry-side{display:flex;align-items:center;gap:16px}
.entry-thumb{width:104px;height:66px;border-radius:12px;overflow:hidden;flex:none;background:var(--bg-page)}
.entry-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform var(--ease)}
.entry:hover .entry-thumb img{transform:scale(1.05)}
.entry-arrow{width:36px;height:36px;border-radius:50%;background:var(--bg-page);color:var(--ink-500);display:flex;align-items:center;justify-content:center;flex:none;transition:all var(--ease)}
.entry:hover .entry-arrow{background:var(--brand);color:#fff;transform:translateX(3px)}

/* 核对口径 */
.check-note{margin-top:-16px;margin-bottom:44px;border-radius:var(--r-card);border:1px solid var(--line);background:#fff;padding:24px 26px;box-shadow:var(--sh-card);display:grid;grid-template-columns:1.2fr 1fr;gap:28px;align-items:center}
.check-note h3{font-size:19px;margin-bottom:10px}
.check-note p{font-size:15px;color:var(--ink-500);margin:0}
.check-list{display:flex;flex-direction:column;gap:10px}
.check-list li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--ink-700)}
.check-list li::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--brand);margin-top:11px;flex:none}

/* 使用须知条 */
.notice-bar{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:22px 26px;display:flex;gap:18px;align-items:flex-start;margin-bottom:44px}
.notice-bar .nb-ico{width:36px;height:36px;border-radius:10px;background:var(--brand-soft);color:var(--brand-deep);display:flex;align-items:center;justify-content:center;flex:none;font-weight:800}
.notice-bar p{margin:0;font-size:14.5px;line-height:1.85;color:var(--ink-500)}
.notice-bar a{font-weight:600}

/* FAQ */
.faq-section{margin-bottom:44px}
.sec-head{margin-bottom:22px}
.sec-head h2{margin-bottom:8px}
.sec-head p{color:var(--ink-500);font-size:16px;margin:0}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:14px;margin-bottom:12px;overflow:hidden;transition:border-color var(--ease),box-shadow var(--ease)}
.faq-item.open{border-color:var(--brand-soft);box-shadow:var(--sh-card)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;text-align:left;background:none;border:none;padding:18px 22px;font-size:17px;font-weight:600;color:var(--ink-900);line-height:1.6}
.faq-item.open .faq-q{color:var(--brand-deep)}
.faq-q .chev{width:28px;height:28px;border-radius:50%;background:var(--bg-page);display:flex;align-items:center;justify-content:center;flex:none;transition:transform var(--ease),background var(--ease)}
.faq-item.open .chev{transform:rotate(180deg);background:var(--brand-soft)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 260ms cubic-bezier(.2,.7,.3,1)}
.faq-a p{padding:0 22px 20px;margin:0;font-size:15px;line-height:1.9;color:var(--ink-500)}

/* CTA */
.cta-band{border-radius:20px;background:linear-gradient(160deg,#171326,#221A3A);color:#fff;padding:44px 46px;margin-bottom:52px;position:relative;overflow:hidden}
.cta-band::after{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:40px 40px;pointer-events:none}
.cta-band-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-band h2{color:#fff;font-size:26px;margin-bottom:8px}
.cta-band p{color:rgba(255,255,255,.72);margin:0;font-size:15.5px;max-width:520px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* 弹层 */
.modal{position:fixed;inset:0;z-index:200;display:none}
.modal.open{display:block}
.modal-mask{position:absolute;inset:0;background:rgba(20,17,31,.55)}
.modal-box{position:relative;z-index:2;width:min(480px,calc(100% - 32px));margin:8vh auto 0;background:#fff;border-radius:20px;padding:32px;box-shadow:0 24px 60px rgba(20,17,31,.28)}
.modal-box h3{font-size:22px;margin-bottom:8px}
.modal-box .modal-desc{font-size:14px;color:var(--ink-500);line-height:1.8;margin-bottom:20px}
.modal-close{position:absolute;top:16px;right:16px;width:32px;height:32px;border-radius:50%;border:none;background:var(--bg-page);color:var(--ink-500);font-size:18px;line-height:1}
.field{margin-bottom:16px}
.field label{display:block;font-size:14px;font-weight:600;color:var(--ink-700);margin-bottom:6px}
.field input,.field textarea{width:100%;height:48px;padding:0 14px;border:1px solid var(--line);border-radius:var(--r-btn);font-size:15px;color:var(--ink-700);background:#fff;outline:none;transition:border-color var(--ease),background var(--ease)}
.field textarea{height:96px;padding:12px 14px;resize:vertical;line-height:1.7}
.field input:focus,.field textarea:focus{border-color:var(--brand);background:rgba(18,201,182,.05)}
.field .err-msg{display:none;font-size:12px;color:var(--err);margin-top:6px}
.field.invalid input,.field.invalid textarea{border-color:var(--err)}
.field.invalid .err-msg{display:block}
.agree{display:flex;gap:10px;align-items:flex-start;font-size:13.5px;color:var(--ink-500);line-height:1.7;margin-bottom:18px}
.agree input{width:16px;height:16px;margin-top:5px;accent-color:var(--brand)}

/* 页脚 */
.site-footer{background:var(--bg-deep);color:rgba(255,255,255,.7);margin-top:0;padding:56px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.3fr;gap:36px;padding-bottom:40px}
.site-footer .logo{color:#fff;margin-bottom:16px}
.site-footer .logo:hover{color:#fff}
.footer-brand p{font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.62);margin-bottom:12px}
.footer-contact{font-size:13.5px;color:rgba(255,255,255,.5)}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{color:rgba(255,255,255,.66);font-size:14.5px}
.footer-col a:hover{color:var(--brand)}
.footer-sub h4{color:#fff;font-size:15px;margin-bottom:12px}
.footer-sub p{font-size:14px;color:rgba(255,255,255,.6);line-height:1.8;margin-bottom:14px}
.footer-sub form{display:flex;gap:10px}
.footer-sub input{flex:1;height:44px;border-radius:10px;border:1px solid rgba(255,255,255,.16);background:rgba(255,255,255,.06);padding:0 14px;color:#fff;font-size:14px;outline:none}
.footer-sub input::placeholder{color:rgba(255,255,255,.42)}
.footer-sub input:focus{border-color:var(--brand);background:rgba(255,255,255,.1)}
.footer-sub .btn{height:44px;padding:0 20px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:20px 0;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13.5px;color:rgba(255,255,255,.5)}

/* 响应式 */
@media (max-width:1199px){
  .container{padding:0 24px}
  .layout{grid-template-columns:200px 1fr;gap:24px}
  .stat-strip{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:991px){
  h1{font-size:32px}
  .hot-tags,.search-box{display:none}
  .nav-toggle{display:flex}
  .header-main{display:none}
  .layout{grid-template-columns:1fr}
  .anchor-side{position:static;display:flex;gap:8px;overflow-x:auto;padding:12px}
  .anchor-side h4,.anchor-side .side-note{display:none}
  .anchor-side a{white-space:nowrap;border-left:none;border-bottom:3px solid transparent;border-radius:8px}
  .anchor-side a.current{border-left:none;border-bottom-color:var(--brand)}
  .page-hero-inner{padding:40px 32px}
  .hero-bg{width:60%;opacity:.24}
  .check-note{grid-template-columns:1fr;gap:18px}
  .entry{grid-template-columns:44px 1fr auto;gap:14px;padding:16px 18px}
  .entry-thumb{display:none}
}
@media (max-width:767px){
  body{font-size:16px}
  .container{padding:0 16px}
  h1{font-size:28px;line-height:1.35}
  h2{font-size:24px}
  .stat-strip{grid-template-columns:1fr 1fr;gap:14px}
  .stat .v{font-size:26px}
  .page-hero{border-radius:16px}
  .page-hero-inner{padding:32px 22px}
  .page-hero .lead{font-size:15.5px}
  .entry{grid-template-columns:1fr;gap:12px;padding:18px}
  .entry-ico{width:40px;height:40px}
  .entry-side{display:none}
  .entry-body h3{font-size:17px}
  .btn{width:100%}
  .cta-actions .btn{width:100%}
  .cta-band{padding:30px 22px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-sub{order:-1}
  .faq-q{font-size:16px;padding:16px 18px}
  .modal-box{width:100%;margin:auto;position:absolute;left:0;right:0;bottom:0;border-radius:20px 20px 0 0;padding:26px 20px 30px}
  .site-header.is-stuck .header-top .container{height:56px}
}
@media (max-width:480px){
  body{font-size:15.5px}
  h1{font-size:26px}
  .stat .v{font-size:23px}
  .entry-body p{font-size:14.5px}
  .footer-bottom{font-size:12.5px}
}

/* roulang page: article */
:root{
  --brand:#12C9B6;
  --brand-deep:#0B8F82;
  --brand-soft:rgba(18,201,182,.10);
  --accent:#FF7A2F;
  --highlight:#FFD34D;
  --ink-900:#14111F;
  --ink-700:#2C2740;
  --ink-500:#5A5570;
  --ink-300:#9C97AE;
  --bg-page:#F6F7FB;
  --bg-card:#FFFFFF;
  --bg-deep:#171326;
  --bg-deep-2:#221A3A;
  --line:#E6E7EF;
  --line-soft:#F0F1F6;
  --ok:#1FA97A;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-card:0 1px 2px rgba(20,17,31,.04),0 8px 24px rgba(20,17,31,.06);
  --shadow-hover:0 12px 32px rgba(20,17,31,.12);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:'PingFang SC','HarmonyOS Sans SC','Source Han Sans SC','Microsoft YaHei',system-ui,sans-serif;
  font-size:17px;
  line-height:1.9;
  color:var(--ink-700);
  background:var(--bg-page);
  text-align:start;
}
img{max-width:100%;display:block;border-radius:var(--radius-img)}
a{color:var(--ink-700);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--brand-deep)}
button,input{font-family:inherit;font-size:inherit}
button{cursor:pointer;border:0;background:none}
ul,ol{padding-left:1.2em;margin:0}
h1,h2,h3,h4{margin:0;color:var(--ink-900);letter-spacing:-.02em;line-height:1.4}
p{margin:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.mono{font-family:'JetBrains Mono',Consolas,monospace;font-variant-numeric:tabular-nums}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:40px;padding:0 22px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
  transition:transform .2s var(--ease),background .2s var(--ease),color .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 16px rgba(18,201,182,.28)}
.btn-primary:hover{background:var(--brand-deep);color:#fff;transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px);filter:brightness(.96)}
.btn-outline{background:transparent;border:1.5px solid var(--brand);color:var(--brand-deep)}
.btn-outline:hover{background:var(--brand-soft);color:var(--brand-deep)}
.btn-ghost{background:transparent;border:1.5px solid rgba(255,255,255,.45);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff}
.btn-lg{height:48px;padding:0 26px;font-size:16px}
.btn-sm{height:34px;padding:0 16px;font-size:14px}
.btn-text{color:var(--brand-deep);font-weight:600;display:inline-flex;align-items:center;gap:6px}
.btn-text i{transition:transform .2s var(--ease)}
.btn-text:hover i{transform:translateX(3px)}
.btn[disabled]{opacity:.45;box-shadow:none;transform:none}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  height:26px;padding:0 12px;border-radius:999px;
  font-size:13px;letter-spacing:.04em;line-height:1;
  background:var(--brand-soft);color:var(--brand-deep);font-weight:600;
}
.badge-accent{background:rgba(255,122,47,.12);color:#C8500F}
.badge-dot::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--highlight);display:inline-block}

/* ---------- 头部导航 ---------- */
.site-header{position:sticky;top:0;z-index:80;background:rgba(246,247,251,.92);backdrop-filter:saturate(140%) blur(8px);transition:box-shadow .25s var(--ease),background .25s var(--ease)}
.topbar{height:56px;border-bottom:1px solid transparent;transition:height .25s var(--ease)}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:100%}
.logo{display:inline-flex;align-items:center;gap:10px;font-size:19px;font-weight:800;color:var(--ink-900);letter-spacing:-.01em}
.logo:hover{color:var(--ink-900)}
.logo-mark{width:12px;height:12px;border-radius:4px;background:linear-gradient(135deg,var(--brand),var(--accent));box-shadow:0 0 0 4px var(--brand-soft);flex:none}
.topbar-right{display:flex;align-items:center;gap:12px}
.hot-tags{display:flex;align-items:center;gap:8px}
.hot-tag{display:inline-flex;align-items:center;height:28px;padding:0 12px;border-radius:999px;background:var(--brand-soft);color:var(--brand-deep);font-size:13px;font-weight:600;letter-spacing:.04em}
.hot-tag:hover{background:var(--brand);color:#fff}
.icon-btn{display:inline-flex;align-items:center;gap:7px;height:34px;padding:0 14px;border-radius:999px;border:1px solid var(--line);background:#fff;color:var(--ink-500);font-size:14px;font-weight:600}
.icon-btn:hover{border-color:var(--brand);color:var(--brand-deep)}
.nav-burger{display:none;width:38px;height:38px;border-radius:10px;border:1px solid var(--line);background:#fff;color:var(--ink-700);align-items:center;justify-content:center;font-size:16px}
.navbar{height:48px;border-bottom:1px solid var(--line);transition:height .25s var(--ease)}
.navbar-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:100%}
.main-nav{display:flex;align-items:center;gap:28px;height:100%}
.main-nav a{position:relative;display:inline-flex;align-items:center;height:100%;font-size:15px;font-weight:600;color:var(--ink-500)}
.main-nav a::after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:2px;background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform .25s var(--ease)}
.main-nav a:hover{color:var(--ink-900)}
.main-nav a:hover::after,.main-nav a.active::after{transform:scaleX(1)}
.main-nav a.active{color:var(--ink-900)}
.nav-search{display:flex;align-items:center;gap:8px;height:36px;padding:0 16px;border-radius:999px;background:#fff;border:1px solid var(--line);min-width:236px;transition:border-color .2s var(--ease),background .2s var(--ease)}
.nav-search:focus-within{border-color:var(--brand);background:var(--brand-soft)}
.nav-search i{color:var(--ink-300);font-size:13px}
.nav-search input{border:0;outline:none;background:transparent;width:100%;font-size:14px;color:var(--ink-700)}
.site-header.is-stuck{background:#fff;box-shadow:0 4px 16px rgba(20,17,31,.06)}
.site-header.is-stuck .topbar{height:52px}
.site-header.is-stuck .navbar{height:44px}
.site-header.is-stuck .logo{font-size:18px}

/* 移动抽屉 */
.drawer-mask{position:fixed;inset:0;background:rgba(20,17,31,.55);opacity:0;visibility:hidden;transition:opacity .25s var(--ease),visibility .25s var(--ease);z-index:90}
.drawer-mask.show{opacity:1;visibility:visible}
.drawer{position:fixed;top:0;right:0;width:min(84vw,360px);height:100%;background:#fff;z-index:95;transform:translateX(102%);transition:transform .3s var(--ease);padding:20px;display:flex;flex-direction:column;gap:6px;overflow-y:auto}
.drawer.show{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}
.drawer-head .logo{font-size:17px}
.drawer-close{width:34px;height:34px;border-radius:50%;background:var(--line-soft);color:var(--ink-700);display:flex;align-items:center;justify-content:center}
.drawer a.drawer-link{display:flex;align-items:center;justify-content:space-between;height:48px;padding:0 4px;border-bottom:1px solid var(--line-soft);font-weight:600;color:var(--ink-700)}
.drawer a.drawer-link.active{color:var(--brand-deep)}
.drawer .btn{margin-top:16px;width:100%}

/* ---------- 面包屑 ---------- */
.breadcrumb{padding:22px 0 0;font-size:14px;color:var(--ink-300)}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;list-style:none;padding:0;margin:0}
.breadcrumb li{display:flex;align-items:center;gap:8px;min-width:0}
.breadcrumb li+li::before{content:"›";color:var(--ink-300)}
.breadcrumb a{color:var(--ink-500)}
.breadcrumb a:hover{color:var(--brand-deep)}
.breadcrumb .current{max-width:340px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--ink-700)}

/* ---------- 文章头 ---------- */
.article-hero{margin-top:18px;border-radius:20px;overflow:hidden;background:linear-gradient(160deg,#171326,#221A3A);position:relative;padding:44px 44px 38px}
.article-hero::before{content:"";position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.png');background-size:cover;background-position:center;opacity:.16}
.article-hero::after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);background-size:44px 44px;opacity:.5}
.article-hero>*{position:relative;z-index:2}
.article-hero .badge{background:rgba(18,201,182,.18);color:#7FF0E3}
.article-hero h1{color:#fff;font-size:36px;font-weight:800;line-height:1.32;margin-top:18px;max-width:900px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.article-lead{margin-top:14px;color:rgba(255,255,255,.72);font-size:16px;line-height:1.8;max-width:820px}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:18px;margin-top:22px;padding-top:18px;border-top:1px solid rgba(255,255,255,.12);color:rgba(255,255,255,.6);font-size:14px}
.article-meta span{display:inline-flex;align-items:center;gap:7px}
.article-meta i{color:var(--brand)}

/* ---------- 布局 ---------- */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:40px;align-items:start;padding:40px 0 8px}
.article-main{max-width:760px}
.article-card{background:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-card);padding:38px 40px}

/* ---------- 正文排版 ---------- */
.article-body{font-size:17px;line-height:1.9;color:var(--ink-700)}
.article-body p{margin:0 0 1.1em}
.article-body h2{position:relative;font-size:26px;font-weight:700;margin:40px 0 16px;padding-left:16px}
.article-body h2::before{content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:4px;border-radius:2px;background:var(--brand)}
.article-body h3{font-size:20px;font-weight:700;margin:30px 0 12px;color:var(--ink-900)}
.article-body h4{font-size:17px;font-weight:600;margin:24px 0 10px;color:var(--ink-900)}
.article-body ul,.article-body ol{margin:0 0 1.1em;padding-left:1.3em}
.article-body li{margin-bottom:.6em}
.article-body a{color:var(--brand-deep);text-decoration:underline;text-underline-offset:3px}
.article-body blockquote{margin:24px 0;padding:16px 22px;background:var(--brand-soft);border-left:4px solid var(--brand);border-radius:0 var(--radius-img) var(--radius-img) 0;color:var(--ink-700)}
.article-body figure{margin:26px 0}
.article-body figcaption{margin-top:10px;font-size:14px;color:var(--ink-300);text-align:center}
.article-body img{border-radius:var(--radius-img);margin:0 auto}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;border:1px solid var(--line);border-radius:var(--radius-img);overflow:hidden}
.article-body th,.article-body td{padding:12px 16px;border-bottom:1px solid var(--line);text-align:start}
.article-body thead th{background:var(--line-soft);color:var(--ink-900);font-weight:700}
.article-body tbody tr:nth-child(even){background:#FAFBFD}
.article-body pre{background:var(--bg-deep);color:#EDEBF5;padding:18px 20px;border-radius:var(--radius-img);overflow-x:auto;font-size:14px;line-height:1.7;margin:22px 0}
.article-body code{font-family:'JetBrains Mono',Consolas,monospace;font-size:.92em;background:var(--line-soft);padding:2px 6px;border-radius:6px}
.article-body pre code{background:none;padding:0;color:inherit}
.empty-state{text-align:center;padding:56px 24px;background:var(--bg-card);border:1px dashed var(--line);border-radius:var(--radius-card)}
.empty-state i{font-size:34px;color:var(--brand);margin-bottom:16px;display:block}
.empty-state h2{font-size:22px;margin-bottom:10px}
.empty-state p{color:var(--ink-500);font-size:15px;margin-bottom:22px}

/* ---------- 侧栏 ---------- */
.sidebar{position:sticky;top:132px;display:flex;flex-direction:column;gap:20px}
.side-card{background:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-card);padding:22px}
.side-card h3{font-size:16px;font-weight:700;display:flex;align-items:center;gap:9px;margin-bottom:14px}
.side-card h3::before{content:"";width:4px;height:15px;border-radius:2px;background:var(--brand)}
.toc-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:2px;max-height:280px;overflow:auto}
.toc-list a{display:block;padding:8px 10px;border-radius:8px;font-size:14px;color:var(--ink-500);border-left:2px solid transparent}
.toc-list a:hover{background:var(--brand-soft);color:var(--brand-deep);border-left-color:var(--brand)}
.toc-list a.is-sub{padding-left:24px;font-size:13px;color:var(--ink-300)}
.side-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:12px}
.side-list li a{display:flex;gap:12px;align-items:flex-start}
.side-list img{width:76px;height:56px;object-fit:cover;border-radius:10px;flex:none}
.side-list strong{display:block;font-size:14px;font-weight:600;color:var(--ink-700);line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.side-list em{font-style:normal;font-size:12px;color:var(--ink-300)}
.side-cta{background:linear-gradient(160deg,#171326,#221A3A);border:1px solid rgba(255,255,255,.06);color:#fff}
.side-cta h3{color:#fff}
.side-cta h3::before{background:var(--accent)}
.side-cta p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.68);margin-bottom:18px}
.side-cta .btn{width:100%}

/* ---------- 相关推荐 ---------- */
.section{padding:56px 0}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:26px}
.section-head h2{font-size:26px;font-weight:700}
.section-head p{font-size:14px;color:var(--ink-500)}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{display:flex;flex-direction:column;background:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-card);overflow:hidden;transition:transform .2s var(--ease),box-shadow .2s var(--ease)}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.card-thumb{position:relative;overflow:hidden;aspect-ratio:16/9;background:var(--line-soft)}
.card-thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .3s var(--ease)}
.card:hover .card-thumb img{transform:scale(1.03)}
.card-thumb .badge{position:absolute;left:12px;top:12px;background:rgba(255,255,255,.92);color:var(--brand-deep)}
.card-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{font-size:17px;font-weight:700;line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-body p{font-size:14px;color:var(--ink-500);line-height:1.8;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;padding-top:12px;border-top:1px solid var(--line-soft);font-size:13px;color:var(--ink-300)}

/* ---------- 上下篇 ---------- */
.prevnext{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:28px}
.prevnext a{display:block;padding:20px 22px;border:1px solid var(--line);border-radius:var(--radius-card);background:var(--bg-card);transition:border-color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease)}
.prevnext a:hover{border-color:var(--brand);transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.prevnext span{display:block;font-size:13px;color:var(--ink-300);margin-bottom:6px}
.prevnext strong{font-size:16px;font-weight:700;color:var(--ink-900)}
.back-row{margin-top:26px;text-align:center}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:900px;margin:0 auto}
.faq-item{background:var(--bg-card);border:1px solid var(--line);border-radius:14px;overflow:hidden;transition:border-color .2s var(--ease),background .2s var(--ease)}
.faq-item.open{border-color:var(--brand-soft)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 22px;font-size:17px;font-weight:600;color:var(--ink-900);text-align:start}
.faq-item.open .faq-q{color:var(--brand-deep)}
.faq-q i{color:var(--ink-300);transition:transform .2s var(--ease);flex:none}
.faq-item.open .faq-q i{transform:rotate(180deg);color:var(--brand)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease)}
.faq-item.open .faq-a{max-height:460px}
.faq-a p{padding:0 22px 20px;font-size:15px;line-height:1.9;color:var(--ink-500)}

/* ---------- 提示条 / CTA ---------- */
.notice{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:18px 24px;display:flex;flex-wrap:wrap;align-items:center;gap:12px 18px;font-size:14px;color:var(--ink-500);line-height:1.8}
.notice i{color:var(--accent)}
.notice a{color:var(--brand-deep);font-weight:600}
.cta-band{background:linear-gradient(160deg,#171326,#221A3A);border-radius:20px;padding:44px;position:relative;overflow:hidden;display:grid;grid-template-columns:1.4fr 1fr;gap:32px;align-items:center}
.cta-band::before{content:"";position:absolute;right:-60px;top:-60px;width:320px;height:320px;border-radius:50%;background:radial-gradient(circle,rgba(18,201,182,.35),transparent 68%)}
.cta-band>*{position:relative;z-index:2}
.cta-band h2{color:#fff;font-size:28px;font-weight:700;margin-bottom:12px}
.cta-band p{color:rgba(255,255,255,.7);font-size:15px;line-height:1.9}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg-deep);color:rgba(255,255,255,.7);margin-top:56px;padding:56px 0 26px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:36px;padding-bottom:34px;border-bottom:1px solid rgba(255,255,255,.08)}
.footer-brand .logo{color:#fff;font-size:18px}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.62)}
.footer-contact{margin-top:14px;font-size:13px;color:rgba(255,255,255,.5)}
.footer-col h4,.footer-sub h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px}
.footer-col ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px}
.footer-col a{color:rgba(255,255,255,.66);font-size:14px}
.footer-col a:hover{color:var(--brand)}
.footer-sub p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);margin-bottom:14px}
.footer-sub form{display:flex;gap:10px}
.footer-sub input{flex:1;height:44px;padding:0 14px;border-radius:var(--radius-btn);border:1px solid rgba(255,255,255,.16);background:rgba(255,255,255,.06);color:#fff;outline:none;font-size:14px}
.footer-sub input::placeholder{color:rgba(255,255,255,.4)}
.footer-sub input:focus{border-color:var(--brand);background:rgba(18,201,182,.1)}
.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;padding-top:20px;font-size:13px;color:rgba(255,255,255,.48)}

/* ---------- 弹层 ---------- */
.modal-mask{position:fixed;inset:0;background:rgba(20,17,31,.55);z-index:120;display:flex;align-items:center;justify-content:center;padding:24px;opacity:0;visibility:hidden;transition:opacity .25s var(--ease),visibility .25s var(--ease)}
.modal-mask.show{opacity:1;visibility:visible}
.modal{width:100%;max-width:480px;background:#fff;border-radius:20px;padding:32px;position:relative;transform:translateY(10px);transition:transform .25s var(--ease)}
.modal-mask.show .modal{transform:translateY(0)}
.modal h3{font-size:22px;font-weight:700;margin-bottom:10px}
.modal p{font-size:14px;line-height:1.8;color:var(--ink-500);margin-bottom:20px}
.modal-close{position:absolute;right:16px;top:16px;width:32px;height:32px;border-radius:50%;background:var(--line-soft);color:var(--ink-700);display:flex;align-items:center;justify-content:center}
.modal-close:hover{background:var(--brand-soft);color:var(--brand-deep)}
.field{margin-bottom:16px}
.field label{display:block;font-size:14px;font-weight:600;color:var(--ink-900);margin-bottom:8px}
.field input,.field textarea{width:100%;height:48px;padding:0 14px;border-radius:var(--radius-btn);border:1px solid var(--line);background:#fff;color:var(--ink-700);outline:none;transition:border-color .2s var(--ease),background .2s var(--ease)}
.field textarea{height:96px;padding:12px 14px;resize:vertical;line-height:1.7}
.field input:focus,.field textarea:focus{border-color:var(--brand);background:rgba(18,201,182,.05)}
.field .hint{font-size:12px;color:var(--ink-300);margin-top:6px}
.check{display:flex;align-items:flex-start;gap:9px;font-size:13px;color:var(--ink-500);line-height:1.7;margin:6px 0 18px}
.check input{width:16px;height:16px;margin-top:3px;accent-color:var(--brand)}
.modal .btn{width:100%}

/* ---------- 响应式 ---------- */
@media (max-width:1439px){.container{max-width:1200px}}
@media (max-width:1199px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:32px}
  .article-main{max-width:100%}
  .sidebar{position:static;flex-direction:row;flex-wrap:wrap}
  .sidebar>*{flex:1 1 300px}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:991px){
  .container{padding:0 24px}
  .hot-tags,.nav-search{display:none}
  .nav-burger{display:inline-flex}
  .navbar{display:none}
  .topbar{height:56px}
  .article-hero{padding:34px 28px 30px}
  .article-hero h1{font-size:29px}
  .cta-band{grid-template-columns:1fr;padding:34px}
  .cta-actions{justify-content:flex-start}
  .side-list img{width:92px;height:62px}
}
@media (max-width:767px){
  body{font-size:16px}
  .container{padding:0 16px}
  .article-hero{margin-top:14px;border-radius:16px;padding:26px 20px}
  .article-hero h1{font-size:25px}
  .article-lead{font-size:15px}
  .article-meta{gap:12px;font-size:13px}
  .article-card{padding:22px 18px}
  .article-body h2{font-size:22px;margin-top:32px}
  .article-body h3{font-size:18px}
  .section{padding:40px 0}
  .section-head h2{font-size:22px}
  .card-grid{grid-template-columns:1fr}
  .prevnext{grid-template-columns:1fr}
  .faq-q{font-size:16px;padding:16px 18px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-sub{order:-1}
  .footer-sub form{flex-direction:column}
  .modal-mask{align-items:flex-end;padding:0}
  .modal{max-width:100%;border-radius:20px 20px 0 0;padding:26px 20px}
  .breadcrumb .current{max-width:180px}
}
@media (max-width:480px){
  .article-hero h1{font-size:23px}
  .hot-tag:last-child{display:none}
  .card-thumb{aspect-ratio:16/10}
}

/* roulang page: category2 */
:root{
  --brand:#12C9B6;
  --brand-deep:#0B8F82;
  --brand-soft:rgba(18,201,182,.10);
  --accent:#FF7A2F;
  --highlight:#FFD34D;
  --ink-900:#14111F;
  --ink-700:#2C2740;
  --ink-500:#5A5570;
  --ink-300:#9C97AE;
  --bg-page:#F6F7FB;
  --bg-card:#FFFFFF;
  --bg-deep:#171326;
  --line:#E6E7EF;
  --line-soft:#F0F1F6;
  --ok:#1FA97A;
  --err:#E1543F;
  --r-card:16px;
  --r-btn:10px;
  --r-img:12px;
  --sh-card:0 1px 2px rgba(20,17,31,.04),0 8px 24px rgba(20,17,31,.06);
  --sh-hover:0 12px 32px rgba(20,17,31,.12);
  --tr:200ms cubic-bezier(.2,.7,.3,1);
  --mono:'JetBrains Mono',Consolas,'Courier New',monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:'PingFang SC','HarmonyOS Sans SC','Source Han Sans SC','Microsoft YaHei',system-ui,sans-serif;
  font-size:17px;line-height:1.9;color:var(--ink-700);background:var(--bg-page);
  text-align:start;
}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:inherit;text-decoration:none}
button,input,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;color:var(--ink-900);letter-spacing:-0.02em;font-weight:700}
p{margin:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.num{font-family:var(--mono);font-variant-numeric:tabular-nums}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);border:0;
  font-size:16px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:background var(--tr),transform var(--tr),box-shadow var(--tr),color var(--tr),border-color var(--tr);
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 18px rgba(18,201,182,.28)}
.btn-primary:hover{background:var(--brand-deep);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px);filter:brightness(.96)}
.btn-ghost{background:transparent;color:var(--brand-deep);border:1.5px solid var(--brand)}
.btn-ghost:hover{background:var(--brand-soft)}
.btn-outline-light{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.42)}
.btn-outline-light:hover{background:rgba(255,255,255,.12)}
.btn-sm{height:40px;padding:0 18px;font-size:15px}
.btn-block{width:100%}
.btn[disabled]{opacity:.45;box-shadow:none;transform:none;cursor:not-allowed}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--brand-deep);font-weight:600;font-size:15px}
.link-arrow i{transition:transform var(--tr);font-style:normal}
.link-arrow:hover i{transform:translateX(3px)}

/* ---------- 头部导航 ---------- */
.site-header{position:sticky;top:0;z-index:80;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow var(--tr)}
.site-header.is-scrolled{box-shadow:0 4px 16px rgba(20,17,31,.07)}
.header-top{height:64px;display:flex;align-items:center;transition:height var(--tr)}
.header-top-inner{display:flex;align-items:center;gap:24px;width:100%}
.site-header.is-scrolled .header-top{height:56px}
.logo{display:inline-flex;align-items:center;gap:10px;font-size:18px;font-weight:800;color:var(--ink-900);letter-spacing:-.01em;transition:font-size var(--tr)}
.site-header.is-scrolled .logo{font-size:17px}
.logo-mark{width:12px;height:12px;border-radius:3px;background:var(--brand);transform:rotate(45deg);box-shadow:0 0 0 4px var(--brand-soft);flex:none}
.hot-tags{display:flex;gap:8px;margin-left:8px;flex:1;overflow:hidden}
.hot-tags a{
  display:inline-flex;align-items:center;height:30px;padding:0 12px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand-deep);font-size:13px;letter-spacing:.04em;font-weight:600;
  transition:background var(--tr),color var(--tr);
}
.hot-tags a:hover{background:var(--brand);color:#fff}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto}
.search-toggle{display:inline-flex;align-items:center;gap:8px;height:40px;padding:0 14px;border-radius:999px;border:1px solid var(--line);background:#fff;color:var(--ink-500);font-size:15px;cursor:pointer;transition:border-color var(--tr),color var(--tr),background var(--tr)}
.search-toggle:hover{border-color:var(--brand);color:var(--brand-deep);background:var(--brand-soft)}
.header-bottom{border-top:1px solid var(--line-soft);height:52px;transition:height var(--tr)}
.site-header.is-scrolled .header-bottom{height:48px}
.header-bottom-inner{display:flex;align-items:center;gap:24px;height:100%}
.main-nav{display:flex;align-items:center;gap:28px;flex:1;overflow-x:auto;scrollbar-width:none}
.main-nav::-webkit-scrollbar{display:none}
.main-nav a{
  position:relative;display:inline-flex;align-items:center;height:100%;padding:2px 0 0;
  font-size:15px;color:var(--ink-500);white-space:nowrap;transition:color var(--tr);
}
.main-nav a::after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:2px;background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform var(--tr)}
.main-nav a:hover{color:var(--ink-900)}
.main-nav a.active{color:var(--ink-900);font-weight:600}
.main-nav a.active::after{transform:scaleX(1)}
.nav-search{display:flex;align-items:center;height:36px;width:230px;border-radius:999px;background:var(--bg-page);border:1px solid transparent;padding:0 6px 0 14px;transition:border-color var(--tr),background var(--tr)}
.nav-search:focus-within{border-color:var(--brand);background:#fff}
.nav-search input{flex:1;min-width:0;border:0;background:transparent;font-size:14px;outline:none}
.nav-search button{width:28px;height:28px;border:0;border-radius:999px;background:var(--brand);color:#fff;cursor:pointer;display:grid;place-items:center;flex:none}
.menu-toggle{display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);background:#fff;cursor:pointer;align-items:center;justify-content:center;flex-direction:column;gap:5px}
.menu-toggle span{display:block;width:18px;height:2px;background:var(--ink-700);border-radius:2px}
.drawer-mask{position:fixed;inset:0;background:rgba(20,17,31,.5);opacity:0;pointer-events:none;transition:opacity var(--tr);z-index:90}
.drawer-mask.open{opacity:1;pointer-events:auto}
.drawer{position:fixed;top:0;right:0;height:100%;width:min(84vw,360px);background:#fff;z-index:95;transform:translateX(100%);transition:transform 260ms cubic-bezier(.2,.7,.3,1);display:flex;flex-direction:column;padding:20px;overflow-y:auto}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line-soft)}
.drawer-head strong{font-size:16px;color:var(--ink-900)}
.drawer-close{width:36px;height:36px;border-radius:999px;border:0;background:var(--bg-page);font-size:18px;cursor:pointer}
.drawer-group{margin-top:18px}
.drawer-group h4{font-size:13px;letter-spacing:.08em;color:var(--ink-300);font-weight:600;margin-bottom:6px}
.drawer-group a{display:flex;align-items:center;height:48px;border-bottom:1px solid var(--line-soft);font-size:16px;color:var(--ink-700)}
.drawer-group a.active{color:var(--brand-deep);font-weight:600}
.drawer .btn{margin-top:22px}

/* ---------- 页面头 ---------- */
.page-hero{position:relative;background:linear-gradient(160deg,#171326,#221A3A);color:#fff;overflow:hidden;padding:56px 0 60px}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;opacity:.26;
}
.page-hero::after{
  content:"";position:absolute;inset:0;opacity:.5;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:56px 56px;
}
.page-hero .container{position:relative;z-index:2}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.6);letter-spacing:.04em;margin-bottom:18px}
.crumb a:hover{color:var(--brand)}
.crumb .sep{color:rgba(255,255,255,.35)}
.page-hero h1{color:#fff;font-size:40px;line-height:1.3;font-weight:800;max-width:820px}
.hero-lead{margin-top:18px;max-width:700px;font-size:17px;line-height:1.9;color:rgba(255,255,255,.78)}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.hero-stats{display:flex;flex-wrap:wrap;gap:44px;margin-top:40px;padding-top:26px;border-top:1px solid rgba(255,255,255,.14)}
.hero-stat{min-width:120px}
.hero-stat b{display:block;font-size:30px;font-weight:800;color:var(--brand);font-family:var(--mono);font-variant-numeric:tabular-nums;line-height:1.2}
.hero-stat span{display:block;margin-top:4px;font-size:13px;color:rgba(255,255,255,.58);letter-spacing:.04em}

/* ---------- 通用板块 ---------- */
.section{padding:76px 0}
.section-alt{background:#fff}
.section-head{max-width:760px;margin-bottom:34px}
.section-head h2{font-size:30px;line-height:1.4;font-weight:700}
.section-head p{margin-top:12px;font-size:16px;line-height:1.9;color:var(--ink-500)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.08em;color:var(--brand-deep);font-weight:600;margin-bottom:12px}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:999px;background:var(--accent)}

/* ---------- 筛选 + 图文行列表 ---------- */
.filter-bar{display:flex;flex-wrap:wrap;gap:10px;padding-bottom:26px;margin-bottom:8px;border-bottom:1px solid var(--line)}
.filter-chip{
  height:38px;padding:0 18px;border-radius:999px;border:1px solid var(--line);background:#fff;
  color:var(--ink-500);font-size:14px;cursor:pointer;transition:all var(--tr);font-weight:500;
}
.filter-chip:hover{border-color:var(--brand);color:var(--brand-deep)}
.filter-chip.active{background:var(--brand);border-color:var(--brand);color:#fff;font-weight:600;box-shadow:0 6px 16px rgba(18,201,182,.26)}
.play-list{display:flex;flex-direction:column;gap:22px;margin-top:26px}
.play-row{
  display:grid;grid-template-columns:320px 1fr;gap:28px;align-items:center;
  background:var(--bg-card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px;min-height:180px;box-shadow:var(--sh-card);transition:box-shadow var(--tr),transform var(--tr),border-color var(--tr);
}
.play-row:hover{box-shadow:var(--sh-hover);transform:translateY(-3px);border-color:rgba(18,201,182,.35)}
.play-thumb{position:relative;overflow:hidden;border-radius:var(--r-img);aspect-ratio:16/10;background:var(--line-soft)}
.play-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 400ms cubic-bezier(.2,.7,.3,1)}
.play-row:hover .play-thumb img{transform:scale(1.03)}
.play-badge{
  position:absolute;top:12px;left:12px;height:26px;padding:0 12px;border-radius:999px;
  background:rgba(20,17,31,.72);color:#fff;font-size:12px;letter-spacing:.04em;display:inline-flex;align-items:center;backdrop-filter:blur(4px);
}
.play-body h3{font-size:22px;line-height:1.5;font-weight:700}
.play-body p{margin-top:10px;font-size:15px;line-height:1.8;color:var(--ink-500);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.play-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;padding-top:14px;border-top:1px dashed var(--line)}
.meta-item{
  display:inline-flex;align-items:center;gap:6px;height:30px;padding:0 12px;border-radius:999px;
  background:var(--bg-page);color:var(--ink-500);font-size:13px;
}
.meta-item b{font-family:var(--mono);font-variant-numeric:tabular-nums;color:var(--ink-900);font-weight:600}
.meta-item.accent{background:rgba(255,122,47,.10);color:#C4551A}
.meta-item.accent b{color:#C4551A}
.empty-hint{margin-top:26px;padding:34px;border-radius:var(--r-card);border:1px dashed var(--line);background:#fff;text-align:center;color:var(--ink-300);font-size:15px}

/* ---------- 说明结构区（不对称栅格） ---------- */
.split{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:start}
.split-intro h2{font-size:30px;line-height:1.4}
.split-intro p{margin-top:14px;font-size:16px;line-height:1.9;color:var(--ink-500)}
.split-intro .btn{margin-top:24px}
.point-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.point-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-card);transition:box-shadow var(--tr),transform var(--tr)}
.point-card:hover{box-shadow:var(--sh-hover);transform:translateY(-3px)}
.point-icon{width:40px;height:40px;border-radius:12px;background:var(--brand-soft);border:1.5px solid var(--brand);display:grid;place-items:center;color:var(--brand-deep);font-weight:700;font-family:var(--mono);font-size:14px}
.point-card h3{margin-top:16px;font-size:18px;font-weight:600}
.point-card p{margin-top:8px;font-size:15px;line-height:1.8;color:var(--ink-500)}

/* ---------- 步骤条 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative}
.step{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:26px 22px;box-shadow:var(--sh-card);transition:box-shadow var(--tr),transform var(--tr)}
.step:hover{box-shadow:var(--sh-hover);transform:translateY(-3px)}
.step-num{font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:34px;font-weight:700;color:var(--brand);line-height:1;letter-spacing:-.02em}
.step::before{content:"";position:absolute;top:42px;left:-24px;width:24px;height:1px;background:var(--line)}
.step:first-child::before{display:none}
.step h3{margin-top:14px;font-size:18px;font-weight:600}
.step p{margin-top:8px;font-size:15px;line-height:1.8;color:var(--ink-500)}
.step-dot{position:absolute;top:38px;right:22px;width:10px;height:10px;border-radius:999px;background:var(--highlight);box-shadow:0 0 0 5px rgba(255,211,77,.22)}

/* ---------- 深色数据区 ---------- */
.deep-section{background:linear-gradient(160deg,#171326,#221A3A);color:#fff;padding:76px 0;position:relative;overflow:hidden}
.deep-section::before{
  content:"";position:absolute;right:-120px;top:-80px;width:520px;height:520px;border-radius:999px;
  background:radial-gradient(circle,rgba(18,201,182,.28),transparent 62%);
}
.deep-section .container{position:relative;z-index:2}
.deep-section h2{color:#fff;font-size:30px;line-height:1.4}
.deep-section .deep-lead{margin-top:12px;font-size:16px;color:rgba(255,255,255,.68);max-width:620px}
.deep-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;margin-top:40px}
.deep-card{background:rgba(255,255,255,.04);border-radius:var(--r-card);padding:26px 22px;box-shadow:0 0 0 1px rgba(255,255,255,.06)}
.deep-card b{display:block;font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:42px;font-weight:700;line-height:1.1;color:var(--accent)}
.deep-card:nth-child(2) b{color:var(--brand)}
.deep-card:nth-child(3) b{color:var(--highlight)}
.deep-card:nth-child(4) b{color:#fff}
.deep-card span{display:block;margin-top:10px;font-size:14px;color:rgba(255,255,255,.62);line-height:1.7}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:14px;max-width:900px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;transition:border-color var(--tr),box-shadow var(--tr)}
.faq-item.open{border-color:rgba(18,201,182,.45);box-shadow:0 8px 24px rgba(18,201,182,.10)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;border:0;background:transparent;cursor:pointer;text-align:start;
  font-size:17px;font-weight:600;color:var(--ink-900);transition:color var(--tr);
}
.faq-item.open .faq-q{color:var(--brand-deep)}
.faq-sign{flex:none;width:26px;height:26px;border-radius:999px;background:var(--bg-page);display:grid;place-items:center;font-size:16px;color:var(--brand-deep);transition:transform var(--tr),background var(--tr);font-family:var(--mono)}
.faq-item.open .faq-sign{background:var(--brand-soft);transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height 280ms cubic-bezier(.2,.7,.3,1)}
.faq-a-inner{padding:0 22px 22px;font-size:15px;line-height:1.9;color:var(--ink-500)}

/* ---------- CTA ---------- */
.cta-band{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:44px;
  display:grid;grid-template-columns:1.4fr 1fr;gap:36px;align-items:center;box-shadow:var(--sh-card);
}
.cta-band h2{font-size:28px;line-height:1.4}
.cta-band p{margin-top:12px;font-size:16px;line-height:1.9;color:var(--ink-500)}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:22px}
.cta-side{background:var(--bg-page);border-radius:var(--r-card);padding:26px}
.cta-side h3{font-size:17px;font-weight:600}
.cta-side ul{margin-top:14px;display:flex;flex-direction:column;gap:10px}
.cta-side li{display:flex;gap:10px;font-size:15px;color:var(--ink-500)}
.cta-side li::before{content:"";flex:none;width:7px;height:7px;border-radius:999px;background:var(--brand);margin-top:9px}

/* ---------- 隐私条 ---------- */
.privacy-bar{background:#EEF1F6;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:22px 0}
.privacy-bar p{font-size:14px;line-height:1.85;color:var(--ink-500)}
.privacy-bar a{color:var(--brand-deep);font-weight:600;text-decoration:underline;text-decoration-color:rgba(18,201,182,.45);text-underline-offset:3px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--bg-deep);color:rgba(255,255,255,.72);padding:60px 0 26px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:36px}
.footer-brand .logo{color:#fff;font-size:17px}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.6);max-width:340px}
.footer-contact{margin-top:14px;font-size:13px;color:rgba(255,255,255,.45)}
.footer-col h4,.footer-sub h4{color:#fff;font-size:15px;font-weight:600;margin-bottom:16px}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.68);transition:color var(--tr)}
.footer-col a:hover{color:var(--brand)}
.footer-sub p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.6);margin-bottom:14px}
.footer-sub form{display:flex;gap:10px}
.footer-sub input{
  flex:1;min-width:0;height:44px;border-radius:var(--r-btn);border:1px solid rgba(255,255,255,.18);
  background:rgba(255,255,255,.06);padding:0 14px;color:#fff;font-size:14px;outline:none;transition:border-color var(--tr),background var(--tr);
}
.footer-sub input::placeholder{color:rgba(255,255,255,.4)}
.footer-sub input:focus{border-color:var(--brand);background:rgba(255,255,255,.1)}
.footer-sub .btn{height:44px;padding:0 18px;font-size:15px}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.45);
}

/* ---------- 弹层 ---------- */
.modal{position:fixed;inset:0;z-index:120;display:flex;align-items:center;justify-content:center;padding:24px}
.modal[hidden]{display:none}
.modal-mask{position:absolute;inset:0;background:rgba(20,17,31,.55);backdrop-filter:blur(2px)}
.modal-panel{
  position:relative;width:100%;max-width:480px;background:#fff;border-radius:20px;padding:32px;
  box-shadow:0 24px 60px rgba(20,17,31,.3);animation:pop 220ms cubic-bezier(.2,.7,.3,1);
}
@keyframes pop{from{opacity:0;transform:translateY(14px) scale(.98)}to{opacity:1;transform:none}}
.modal-close{position:absolute;top:16px;right:16px;width:32px;height:32px;border-radius:999px;border:0;background:var(--bg-page);color:var(--ink-500);font-size:18px;cursor:pointer;transition:background var(--tr)}
.modal-close:hover{background:var(--line)}
.modal-panel h3{font-size:22px;font-weight:700}
.modal-desc{margin-top:10px;font-size:14px;line-height:1.8;color:var(--ink-500)}
.lead-form{margin-top:22px;display:flex;flex-direction:column}
.lead-form label{font-size:14px;font-weight:600;color:var(--ink-700);margin-bottom:6px}
.lead-form input[type=text],.lead-form textarea{
  height:48px;border-radius:var(--r-btn);border:1px solid var(--line);padding:0 14px;font-size:15px;
  background:#fff;outline:none;transition:border-color var(--tr),background var(--tr),box-shadow var(--tr);margin-bottom:16px;
}
.lead-form textarea{height:auto;padding:12px 14px;resize:vertical;line-height:1.7}
.lead-form input:focus,.lead-form textarea:focus{border-color:var(--brand);background:rgba(18,201,182,.05);box-shadow:0 0 0 3px rgba(18,201,182,.12)}
.lead-form input.invalid,.lead-form textarea.invalid{border-color:var(--err)}
.check{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:var(--ink-500);font-weight:400;margin:0 0 16px;cursor:pointer}
.check input{width:16px;height:16px;margin-top:5px;accent-color:var(--brand);flex:none}
.form-err{margin:0 0 12px;font-size:13px;color:var(--err)}
.form-ok{margin:0 0 12px;font-size:14px;color:var(--ok);font-weight:600}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .container{padding:0 24px}
  .steps{grid-template-columns:repeat(2,1fr)}
  .step:nth-child(3)::before{display:none}
  .deep-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:28px}
  .footer-sub{grid-column:1/-1;order:-1}
}
@media (max-width:991px){
  .hot-tags,.nav-search{display:none}
  .main-nav{display:none}
  .menu-toggle{display:flex}
  .header-bottom{display:none}
  .header-top{height:60px}
  .page-hero h1{font-size:32px}
  .split{grid-template-columns:1fr;gap:32px}
  .cta-band{grid-template-columns:1fr;padding:32px}
  .play-row{grid-template-columns:260px 1fr;gap:22px}
}
@media (max-width:767px){
  body{font-size:16px}
  .container{padding:0 16px}
  .section{padding:48px 0}
  .page-hero{padding:40px 0 44px}
  .page-hero h1{font-size:28px;line-height:1.35}
  .hero-lead{font-size:15px}
  .hero-actions{flex-direction:column}
  .hero-actions .btn{width:100%}
  .hero-stats{gap:24px}
  .hero-stat b{font-size:26px}
  .section-head h2,.split-intro h2,.deep-section h2,.cta-band h2{font-size:24px}
  .play-row{grid-template-columns:1fr;gap:16px;padding:16px}
  .play-thumb{aspect-ratio:16/10}
  .play-body h3{font-size:19px}
  .point-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr;gap:16px}
  .step::before{display:none}
  .deep-grid{grid-template-columns:1fr;gap:16px}
  .deep-card b{font-size:34px}
  .faq-q{font-size:16px;padding:16px 18px}
  .faq-a-inner{padding:0 18px 18px}
  .cta-band{padding:26px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;gap:8px}
  .modal{padding:0;align-items:flex-end}
  .modal-panel{max-width:100%;border-radius:20px 20px 0 0;padding:24px;animation:slideUp 260ms cubic-bezier(.2,.7,.3,1)}
  @keyframes slideUp{from{transform:translateY(100%)}to{transform:none}}
}
@media (max-width:480px){
  body{font-size:15px}
  .page-hero h1{font-size:24px}
  .logo{font-size:15px}
  .meta-item{font-size:12px;height:28px;padding:0 10px}
  .meta-item:nth-child(3){display:none}
  .hot-tags{display:none}
}

/* roulang page: category4 */
:root{
  --brand:#12C9B6;
  --brand-deep:#0B8F82;
  --brand-soft:rgba(18,201,182,.10);
  --accent:#FF7A2F;
  --highlight:#FFD34D;
  --ink-900:#14111F;
  --ink-700:#2C2740;
  --ink-500:#5A5570;
  --ink-300:#9C97AE;
  --bg-page:#F6F7FB;
  --bg-card:#FFFFFF;
  --bg-deep:#171326;
  --line:#E6E7EF;
  --line-soft:#F0F1F6;
  --ok:#1FA97A;
  --warn:#E5A100;
  --err:#E1543F;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-img:12px;
  --shadow-card:0 1px 2px rgba(20,17,31,.04),0 8px 24px rgba(20,17,31,.06);
  --shadow-hover:0 12px 32px rgba(20,17,31,.12);
  --t:200ms cubic-bezier(.2,.7,.3,1);
  --mono:'JetBrains Mono',Consolas,'Courier New',monospace;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:'PingFang SC','HarmonyOS Sans SC','Source Han Sans SC','Microsoft YaHei',system-ui,sans-serif;
  font-size:17px;
  line-height:1.9;
  color:var(--ink-700);
  background:var(--bg-page);
  text-align:start;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand-deep);text-decoration:none;transition:color var(--t);}
a:hover{color:var(--brand);}
button,input{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4{margin:0;color:var(--ink-900);letter-spacing:-.02em;}
p{margin:0;line-height:1.9;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}
.num,time,.stat-num,.score-num{font-variant-numeric:tabular-nums;font-family:var(--mono);letter-spacing:0;}

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 32px;
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:40px;
  padding:0 24px;
  border-radius:var(--radius-btn);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  transition:all var(--t);
  white-space:nowrap;
  background:transparent;
}
.btn-lg{height:48px;font-size:16px;padding:0 30px;}
.btn-sm{height:34px;font-size:14px;padding:0 16px;}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 16px rgba(18,201,182,.28);}
.btn-primary:hover{background:var(--brand-deep);color:#fff;transform:translateY(-1px);}
.btn-primary:active{transform:translateY(1px);filter:brightness(.96);}
.btn-outline{border:1.5px solid var(--brand);color:var(--brand-deep);}
.btn-outline:hover{background:var(--brand-soft);color:var(--brand-deep);}
.btn-ghost{border:1.5px solid rgba(255,255,255,.42);color:#fff;}
.btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff;}
.btn-text{color:var(--brand-deep);padding:0;height:auto;font-weight:600;}
.btn-text .arrow{transition:transform var(--t);display:inline-block;}
.btn-text:hover .arrow{transform:translateX(3px);}
.btn[disabled]{opacity:.45;box-shadow:none;transform:none;pointer-events:none;}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(246,247,251,.92);
  backdrop-filter:saturate(140%) blur(8px);
  transition:background var(--t),box-shadow var(--t);
}
.site-header.scrolled{
  background:#fff;
  box-shadow:0 4px 16px rgba(20,17,31,.06);
  border-bottom:1px solid var(--line);
}
.topbar{border-bottom:1px solid var(--line-soft);transition:height var(--t);}
.site-header.scrolled .topbar{border-bottom-color:transparent;}
.topbar-inner{
  display:flex;
  align-items:center;
  gap:20px;
  height:56px;
  transition:height var(--t);
}
.site-header.scrolled .topbar-inner{height:52px;}
.logo{
  display:inline-flex;
  align-items:center;
  gap:9px;
  font-size:17px;
  font-weight:800;
  color:var(--ink-900);
  letter-spacing:-.02em;
  flex-shrink:0;
}
.logo:hover{color:var(--ink-900);}
.logo-mark{
  width:12px;
  height:12px;
  border-radius:3px;
  background:var(--brand);
  transform:rotate(45deg);
  box-shadow:8px 0 0 -2px var(--accent);
  flex-shrink:0;
}
.hot-tags{display:flex;align-items:center;gap:8px;margin-left:auto;}
.tag-pill{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:28px;
  padding:0 12px;
  border-radius:999px;
  background:var(--brand-soft);
  color:var(--brand-deep);
  font-size:13px;
  font-weight:600;
  letter-spacing:.04em;
  transition:all var(--t);
}
.tag-pill::before{
  content:"";
  width:5px;height:5px;border-radius:50%;
  background:var(--highlight);
}
.tag-pill:hover{background:var(--brand);color:#fff;}
.tag-pill:hover::before{background:#fff;}
.topbar-actions{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.icon-btn{
  display:inline-flex;
  align-items:center;
  gap:6px;
  height:34px;
  padding:0 14px;
  border-radius:999px;
  border:1px solid var(--line);
  background:#fff;
  color:var(--ink-500);
  font-size:14px;
  cursor:pointer;
  transition:all var(--t);
}
.icon-btn:hover{border-color:var(--brand);color:var(--brand-deep);background:var(--brand-soft);}
.hamburger{
  display:none;
  width:38px;height:38px;
  border-radius:10px;
  border:1px solid var(--line);
  background:#fff;
  cursor:pointer;
  padding:0;
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:4px;
}
.hamburger span{display:block;width:16px;height:2px;background:var(--ink-700);border-radius:2px;}

.channelbar{transition:height var(--t);}
.channelbar-inner{
  display:flex;
  align-items:center;
  gap:24px;
  height:48px;
  transition:height var(--t);
}
.site-header.scrolled .channelbar-inner{height:44px;}
.main-nav{display:flex;align-items:center;gap:26px;}
.main-nav a{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:100%;
  padding:0 2px;
  font-size:15px;
  font-weight:600;
  color:var(--ink-500);
  transition:color var(--t);
  white-space:nowrap;
}
.main-nav a::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-1px;
  height:2px;
  border-radius:2px;
  background:var(--brand);
  transform:scaleX(0);
  transition:transform var(--t);
}
.main-nav a:hover{color:var(--ink-900);}
.main-nav a:hover::after{transform:scaleX(.6);}
.main-nav a.active{color:var(--ink-900);}
.main-nav a.active::after{transform:scaleX(1);}
.nav-search{margin-left:auto;}
.nav-search input{
  width:230px;
  height:36px;
  border-radius:999px;
  border:1px solid var(--line);
  background:#fff;
  padding:0 16px;
  font-size:14px;
  color:var(--ink-700);
  transition:all var(--t);
}
.nav-search input::placeholder{color:var(--ink-300);}
.nav-search input:focus{
  outline:none;
  border-color:var(--brand);
  box-shadow:0 0 0 3px var(--brand-soft);
  width:270px;
}

.search-pop{
  display:none;
  position:absolute;
  top:100%;right:32px;
  width:340px;
  padding:14px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:14px;
  box-shadow:var(--shadow-hover);
}
.search-pop.open{display:block;}
.search-pop input{
  width:100%;
  height:44px;
  border-radius:10px;
  border:1px solid var(--line);
  padding:0 14px;
  font-size:15px;
}
.search-pop input:focus{outline:none;border-color:var(--brand);background:rgba(18,201,182,.04);}
.search-pop p{font-size:13px;color:var(--ink-300);margin-top:10px;}

/* 移动抽屉 */
.drawer{
  position:fixed;
  top:0;right:0;
  width:min(84vw,360px);
  height:100vh;
  background:#fff;
  box-shadow:-12px 0 40px rgba(20,17,31,.16);
  transform:translateX(102%);
  transition:transform 260ms cubic-bezier(.2,.7,.3,1);
  z-index:120;
  padding:20px 20px 28px;
  overflow-y:auto;
  display:flex;
  flex-direction:column;
  gap:6px;
}
.drawer.open{transform:translateX(0);}
.drawer-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding-bottom:14px;
  border-bottom:1px solid var(--line-soft);
  margin-bottom:10px;
}
.drawer-head .logo{font-size:15px;}
.drawer-close{
  width:32px;height:32px;
  border-radius:50%;
  border:1px solid var(--line);
  background:var(--bg-page);
  color:var(--ink-500);
  font-size:16px;
  cursor:pointer;
  line-height:1;
}
.drawer-nav{display:flex;flex-direction:column;}
.drawer-nav a{
  display:flex;
  align-items:center;
  height:48px;
  font-size:16px;
  font-weight:600;
  color:var(--ink-700);
  border-bottom:1px solid var(--line-soft);
}
.drawer-nav a.active{color:var(--brand-deep);}
.drawer-tags{display:flex;flex-wrap:wrap;gap:8px;margin:16px 0;}
.drawer-foot{margin-top:auto;padding-top:16px;}
.drawer-foot .btn{width:100%;}
.mask{
  position:fixed;inset:0;
  background:rgba(20,17,31,.45);
  opacity:0;pointer-events:none;
  transition:opacity var(--t);
  z-index:110;
}
.mask.show{opacity:1;pointer-events:auto;}

/* ============ 页面头 ============ */
.page-hero{
  position:relative;
  background:linear-gradient(160deg,#171326,#221A3A);
  color:#fff;
  overflow:hidden;
  padding:44px 0 52px;
}
.page-hero::before{
  content:"";
  position:absolute;inset:0;
  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:44px 44px;
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:2;}
.breadcrumb{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
  font-size:14px;
  color:rgba(255,255,255,.62);
  margin-bottom:18px;
}
.breadcrumb a{color:rgba(255,255,255,.72);}
.breadcrumb a:hover{color:var(--brand);}
.breadcrumb .sep{color:rgba(255,255,255,.34);}
.breadcrumb .cur{color:#fff;font-weight:600;}
.page-hero h1{
  color:#fff;
  font-size:40px;
  line-height:1.3;
  font-weight:800;
  max-width:820px;
}
.page-hero .lead{
  margin-top:16px;
  max-width:720px;
  font-size:16px;
  line-height:1.9;
  color:rgba(255,255,255,.76);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
.hero-banner{
  margin-top:34px;
  border-radius:18px;
  overflow:hidden;
  border:1px solid rgba(255,255,255,.10);
  box-shadow:0 20px 50px rgba(0,0,0,.28);
}
.hero-banner img{width:100%;height:250px;object-fit:cover;}

/* ============ 通用板块 ============ */
.section{padding:64px 0;}
.section-alt{background:#fff;border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft);}
.section-head{max-width:760px;margin-bottom:34px;}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  font-weight:700;
  letter-spacing:.08em;
  color:var(--brand-deep);
  background:var(--brand-soft);
  border-radius:999px;
  padding:5px 14px;
  margin-bottom:14px;
}
.section-head h2{font-size:30px;line-height:1.4;font-weight:700;}
.section-head p{margin-top:12px;font-size:16px;color:var(--ink-500);}

/* 数据条 */
.stat-strip{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:26px 30px;
  box-shadow:var(--shadow-card);
  margin-top:-58px;
  position:relative;
  z-index:5;
}
.stat-item{border-left:3px solid var(--brand-soft);padding-left:16px;}
.stat-item:first-child{border-left-color:var(--brand);}
.stat-num{font-size:34px;font-weight:800;color:var(--ink-900);line-height:1.2;}
.stat-num em{font-style:normal;font-size:16px;color:var(--accent);margin-left:4px;font-weight:700;}
.stat-label{margin-top:6px;font-size:14px;color:var(--ink-500);}

/* 维度卡片 */
.dim-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.dim-card{
  background:var(--bg-card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:26px;
  box-shadow:var(--shadow-card);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.dim-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:rgba(18,201,182,.5);}
.dim-icon{
  width:44px;height:44px;
  border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  border:1.5px solid var(--brand);
  color:var(--brand-deep);
  background:var(--brand-soft);
  font-size:18px;
  font-weight:800;
  margin-bottom:16px;
}
.dim-card h3{font-size:19px;line-height:1.5;font-weight:700;}
.dim-card p{margin-top:10px;font-size:15px;color:var(--ink-500);}
.dim-meta{
  margin-top:16px;
  padding-top:14px;
  border-top:1px dashed var(--line);
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-size:13px;
  color:var(--ink-300);
}
.dim-meta strong{color:var(--brand-deep);font-weight:700;}

/* 特色对比卡片 + 评分条 */
.compare-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.feature-card{
  display:flex;
  gap:20px;
  background:var(--bg-card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:22px;
  box-shadow:var(--shadow-card);
  transition:transform var(--t),box-shadow var(--t);
}
.feature-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);}
.feature-thumb{
  width:170px;
  flex:0 0 170px;
  border-radius:var(--radius-img);
  overflow:hidden;
  background:var(--line-soft);
}
.feature-thumb img{width:100%;height:100%;min-height:130px;object-fit:cover;transition:transform 320ms cubic-bezier(.2,.7,.3,1);}
.feature-card:hover .feature-thumb img{transform:scale(1.04);}
.feature-body{flex:1;min-width:0;}
.badge{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 10px;
  border-radius:999px;
  font-size:12px;
  font-weight:700;
  letter-spacing:.04em;
  background:var(--brand-soft);
  color:var(--brand-deep);
  margin-bottom:10px;
}
.badge-warn{background:rgba(255,122,47,.12);color:#C2521A;}
.feature-body h3{font-size:19px;line-height:1.5;font-weight:700;}
.feature-body p{margin-top:8px;font-size:15px;color:var(--ink-500);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.score-row{display:flex;align-items:center;gap:12px;margin-top:14px;}
.score-bar{
  flex:1;
  height:8px;
  border-radius:999px;
  background:var(--line-soft);
  overflow:hidden;
}
.score-bar i{
  display:block;
  height:100%;
  border-radius:999px;
  background:linear-gradient(90deg,var(--brand),#4FE0D0);
}
.score-bar.acc i{background:linear-gradient(90deg,var(--accent),#FFB07A);}
.score-num{font-size:13px;font-weight:700;color:var(--ink-700);min-width:40px;text-align:right;}

/* 对比表 */
.table-wrap{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  overflow-x:auto;
  -webkit-overflow-scrolling:touch;
}
table.compare-table{
  width:100%;
  min-width:760px;
  border-collapse:collapse;
  font-size:15px;
}
table.compare-table caption{
  caption-side:top;
  text-align:start;
  padding:18px 22px 6px;
  font-size:13px;
  color:var(--ink-300);
}
table.compare-table th,
table.compare-table td{
  padding:15px 20px;
  border-bottom:1px solid var(--line-soft);
  text-align:start;
  vertical-align:top;
  line-height:1.75;
}
table.compare-table thead th{
  background:var(--bg-deep);
  color:#fff;
  font-size:14px;
  font-weight:700;
  letter-spacing:.04em;
  white-space:nowrap;
  border-bottom:0;
}
table.compare-table thead th:first-child{border-radius:14px 0 0 0;}
table.compare-table thead th:last-child{border-radius:0 14px 0 0;}
table.compare-table tbody tr:nth-child(even){background:#FAFBFE;}
table.compare-table tbody td:first-child{
  font-weight:700;
  color:var(--ink-900);
  white-space:nowrap;
  border-left:3px solid transparent;
}
table.compare-table tbody tr:hover{background:var(--brand-soft);}
table.compare-table tbody tr:hover td:first-child{border-left-color:var(--brand);}
table.compare-table tbody tr:last-child td{border-bottom:0;}
.cell-tag{
  display:inline-block;
  padding:2px 9px;
  border-radius:999px;
  font-size:12px;
  font-weight:700;
  background:var(--brand-soft);
  color:var(--brand-deep);
  margin-right:6px;
}
.cell-tag.acc{background:rgba(255,122,47,.12);color:#C2521A;}

/* 清单 + 反馈 */
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:start;}
.check-list{
  background:#fff;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:26px 28px;
  box-shadow:var(--shadow-card);
}
.check-list h3{font-size:20px;font-weight:700;margin-bottom:6px;}
.check-list .hint{font-size:14px;color:var(--ink-300);margin-bottom:16px;}
.check-list li{
  display:flex;
  gap:12px;
  padding:13px 0;
  border-bottom:1px dashed var(--line-soft);
  font-size:15px;
  color:var(--ink-700);
}
.check-list li:last-child{border-bottom:0;}
.check-list li::before{
  content:"✓";
  flex:0 0 22px;
  height:22px;
  border-radius:50%;
  background:var(--brand-soft);
  color:var(--brand-deep);
  font-size:13px;
  font-weight:700;
  display:flex;align-items:center;justify-content:center;
  margin-top:5px;
}
.feedback-stack{display:flex;flex-direction:column;gap:18px;}
.feedback-card{
  background:var(--bg-card);
  border:1px solid var(--line);
  border-left:4px solid var(--accent);
  border-radius:14px;
  padding:20px 22px;
  box-shadow:var(--shadow-card);
  transition:transform var(--t),box-shadow var(--t);
}
.feedback-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.feedback-card p{font-size:15px;color:var(--ink-700);}
.feedback-who{
  margin-top:12px;
  font-size:13px;
  color:var(--ink-300);
  display:flex;
  align-items:center;
  gap:8px;
}
.feedback-who span.dot{width:6px;height:6px;border-radius:50%;background:var(--brand);}

/* FAQ */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:900px;}
.faq-item{
  background:#fff;
  border:1px solid var(--line);
  border-radius:14px;
  transition:border-color var(--t),box-shadow var(--t);
}
.faq-item[open]{border-color:rgba(18,201,182,.5);box-shadow:0 6px 20px rgba(18,201,182,.10);}
.faq-item summary{
  list-style:none;
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:18px 22px;
  font-size:17px;
  font-weight:600;
  color:var(--ink-900);
  transition:color var(--t);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{color:var(--brand-deep);}
.faq-item summary .sign{
  flex:0 0 26px;
  width:26px;height:26px;
  border-radius:50%;
  background:var(--brand-soft);
  color:var(--brand-deep);
  display:flex;align-items:center;justify-content:center;
  font-size:16px;
  font-weight:700;
  transition:transform var(--t),background var(--t),color var(--t);
}
.faq-item[open] summary{color:var(--brand-deep);}
.faq-item[open] summary .sign{transform:rotate(180deg);background:var(--brand);color:#fff;}
.faq-body{padding:0 22px 20px;font-size:15px;line-height:1.9;color:var(--ink-500);}

/* CTA */
.cta-panel{
  position:relative;
  background:linear-gradient(160deg,#171326,#221A3A);
  border-radius:20px;
  padding:48px 44px;
  overflow:hidden;
  color:#fff;
}
.cta-panel::after{
  content:"";
  position:absolute;
  right:-80px;top:-60px;
  width:320px;height:320px;
  border-radius:50%;
  background:radial-gradient(circle,rgba(18,201,182,.28),transparent 68%);
  pointer-events:none;
}
.cta-panel .inner{position:relative;z-index:2;max-width:640px;}
.cta-panel h2{color:#fff;font-size:28px;line-height:1.4;font-weight:700;}
.cta-panel p{margin-top:14px;color:rgba(255,255,255,.74);font-size:16px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
.cta-visual{
  position:absolute;
  right:0;bottom:0;
  width:42%;
  max-width:460px;
  opacity:.16;
  border-radius:20px 0 20px 0;
  pointer-events:none;
}
.cta-visual img{width:100%;height:100%;object-fit:cover;}

/* 隐私说明条 */
.notice-bar{
  background:#EEF1F8;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  padding:26px 0;
}
.notice-inner{
  display:flex;
  align-items:flex-start;
  gap:18px;
}
.notice-icon{
  flex:0 0 34px;
  width:34px;height:34px;
  border-radius:10px;
  background:#fff;
  border:1px solid var(--line);
  color:var(--brand-deep);
  display:flex;align-items:center;justify-content:center;
  font-weight:800;
  font-size:15px;
}
.notice-inner p{font-size:14px;line-height:1.9;color:var(--ink-500);}
.notice-inner a{font-weight:600;}

/* 页脚 */
.site-footer{
  background:var(--bg-deep);
  color:rgba(255,255,255,.72);
  padding:56px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.4fr;
  gap:36px;
  padding-bottom:40px;
  border-bottom:1px solid rgba(255,255,255,.10);
}
.footer-brand .logo{color:#fff;font-size:17px;}
.footer-brand .logo:hover{color:#fff;}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.9;color:rgba(255,255,255,.62);}
.footer-contact{
  margin-top:14px;
  font-size:13px;
  color:rgba(255,255,255,.5);
  padding-left:12px;
  border-left:2px solid var(--brand);
}
.footer-col h4,.footer-sub h4{
  color:#fff;
  font-size:15px;
  font-weight:700;
  margin-bottom:16px;
  letter-spacing:.02em;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.68);}
.footer-col a:hover{color:var(--brand);}
.footer-sub p{font-size:14px;color:rgba(255,255,255,.62);margin-bottom:14px;}
.footer-sub form{display:flex;gap:10px;}
.footer-sub input{
  flex:1;
  min-width:0;
  height:40px;
  border-radius:var(--radius-btn);
  border:1px solid rgba(255,255,255,.16);
  background:rgba(255,255,255,.06);
  color:#fff;
  padding:0 14px;
  font-size:14px;
}
.footer-sub input::placeholder{color:rgba(255,255,255,.4);}
.footer-sub input:focus{outline:none;border-color:var(--brand);background:rgba(18,201,182,.10);}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:12px;
  padding:20px 0 26px;
  font-size:13px;
  color:rgba(255,255,255,.46);
}

/* 弹层 */
.modal{
  position:fixed;
  inset:0;
  z-index:200;
  display:none;
  align-items:center;
  justify-content:center;
  padding:24px;
}
.modal.open{display:flex;}
.modal-mask{position:absolute;inset:0;background:rgba(20,17,31,.55);}
.modal-box{
  position:relative;
  z-index:2;
  width:100%;
  max-width:480px;
  background:#fff;
  border-radius:20px;
  padding:32px;
  box-shadow:0 30px 70px rgba(20,17,31,.3);
}
.modal-box h3{font-size:22px;font-weight:700;}
.modal-box .desc{margin-top:8px;font-size:14px;color:var(--ink-500);line-height:1.8;}
.modal-close{
  position:absolute;
  top:16px;right:16px;
  width:32px;height:32px;
  border-radius:50%;
  border:1px solid var(--line);
  background:var(--bg-page);
  color:var(--ink-500);
  cursor:pointer;
  font-size:16px;
  line-height:1;
}
.field{margin-top:18px;}
.field label{display:block;font-size:14px;font-weight:600;color:var(--ink-700);margin-bottom:8px;}
.field input,.field textarea{
  width:100%;
  border-radius:var(--radius-btn);
  border:1px solid var(--line);
  padding:13px 14px;
  font-size:15px;
  color:var(--ink-700);
  background:#fff;
  transition:all var(--t);
}
.field input{height:48px;}
.field textarea{min-height:96px;resize:vertical;line-height:1.8;}
.field input:focus,.field textarea:focus{
  outline:none;
  border-color:var(--brand);
  box-shadow:0 0 0 3px var(--brand-soft);
  background:rgba(18,201,182,.04);
}
.agree{display:flex;gap:10px;align-items:flex-start;margin-top:18px;font-size:13px;color:var(--ink-500);line-height:1.8;}
.agree input{width:16px;height:16px;margin-top:4px;accent-color:var(--brand);}
.modal-box .btn{width:100%;margin-top:20px;}

/* 响应式 */
@media (max-width:1199px){
  .container{padding:0 24px;}
  .dim-grid{grid-template-columns:repeat(2,1fr);}
  .compare-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
  .nav-search input{width:190px;}
}
@media (max-width:991px){
  .hot-tags{display:none;}
  .channelbar{display:none;}
  .hamburger{display:flex;}
  .topbar-inner{height:56px;}
  .site-header.scrolled .topbar-inner{height:56px;}
  .hero-banner img{height:200px;}
  .page-hero{padding:34px 0 42px;}
  .page-hero h1{font-size:32px;}
  .stat-strip{grid-template-columns:repeat(2,1fr);gap:18px;padding:22px;}
  .stat-item{border-left-color:var(--line-soft);}
  .dim-grid{grid-template-columns:repeat(2,1fr);}
  .two-col{grid-template-columns:1fr;}
  .cta-panel{padding:40px 32px;}
  .cta-visual{display:none;}
  .section{padding:52px 0;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .container{padding:0 16px;}
  .logo{font-size:15px;}
  .logo-mark{width:10px;height:10px;box-shadow:6px 0 0 -1.5px var(--accent);}
  .icon-btn{padding:0 12px;}
  .page-hero h1{font-size:28px;line-height:1.35;}
  .page-hero .lead{font-size:15px;}
  .hero-actions .btn{width:100%;}
  .hero-banner img{height:170px;}
  .section-head h2{font-size:24px;}
  .stat-strip{grid-template-columns:1fr 1fr;margin-top:-40px;padding:20px 18px;}
  .stat-num{font-size:26px;}
  .dim-grid{grid-template-columns:1fr;}
  .feature-card{flex-direction:column;gap:16px;}
  .feature-thumb{width:100%;flex:none;aspect-ratio:16/10;}
  .feature-thumb img{min-height:0;height:100%;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-sub{order:-1;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .cta-panel{padding:34px 22px;border-radius:16px;}
  .cta-panel h2{font-size:22px;}
  .cta-actions .btn{width:100%;}
  .notice-inner{flex-direction:column;gap:12px;}
  .faq-item summary{font-size:16px;padding:16px 18px;}
  .modal{padding:0;align-items:flex-end;}
  .modal-box{max-width:100%;border-radius:20px 20px 0 0;padding:26px 22px 30px;}
  .check-list{padding:22px 20px;}
}
@media (max-width:520px){
  body{font-size:15px;}
  .stat-strip{grid-template-columns:1fr;}
  .stat-item{border-left-color:var(--brand-soft);}
  .page-hero h1{font-size:25px;}
  .feature-thumb{aspect-ratio:16/10;}
  .footer-sub form{flex-direction:column;}
  .footer-sub .btn{width:100%;}
  .dim-meta{flex-direction:column;align-items:flex-start;gap:4px;}
}

/* roulang page: category3 */
/* ============ 设计变量 ============ */
:root{
  --brand:#12C9B6;
  --brand-deep:#0B8F82;
  --brand-soft:rgba(18,201,182,.10);
  --accent:#FF7A2F;
  --highlight:#FFD34D;
  --ink-900:#14111F;
  --ink-700:#2C2740;
  --ink-500:#5A5570;
  --ink-300:#9C97AE;
  --bg-page:#F6F7FB;
  --bg-card:#FFFFFF;
  --bg-deep:#171326;
  --bg-deep-2:#221A3A;
  --line:#E6E7EF;
  --line-soft:#F0F1F6;
  --ok:#1FA97A;
  --warn:#E5A100;
  --err:#E1543F;
  --info:#3D7BF7;
  --r-card:16px;
  --r-btn:10px;
  --r-img:12px;
  --r-modal:20px;
  --shadow-card:0 1px 2px rgba(20,17,31,.04),0 8px 24px rgba(20,17,31,.06);
  --shadow-hover:0 12px 32px rgba(20,17,31,.12);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font:'PingFang SC','HarmonyOS Sans SC','Source Han Sans SC','Microsoft YaHei',system-ui,-apple-system,sans-serif;
  --mono:'JetBrains Mono',Consolas,'Courier New',monospace;
}

/* ============ 基础重置 ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:17px;
  line-height:1.9;
  color:var(--ink-700);
  background:var(--bg-page);
  text-align:start;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--ink-900);letter-spacing:-.02em;font-weight:700}
h1{font-size:40px;line-height:1.3;font-weight:800}
h2{font-size:30px;line-height:1.4}
h3{font-size:22px;line-height:1.5}
h4{font-size:18px;line-height:1.6;font-weight:600}
p{margin:0 0 1.1em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:var(--brand-deep);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--brand)}
button{font-family:inherit;cursor:pointer;border:0;background:none}
input,textarea{font-family:inherit;font-size:16px;color:var(--ink-700)}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
.num{font-family:var(--mono);font-variant-numeric:tabular-nums}

/* ============ 容器与通用 ============ */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.section{padding:72px 0}
.section-tight{padding:48px 0}
.section-head{max-width:760px;margin-bottom:36px}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.04em;font-weight:600;
  color:var(--brand-deep);background:var(--brand-soft);
  padding:6px 14px;border-radius:999px;margin-bottom:14px;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--highlight)}
.section-head p{color:var(--ink-500);font-size:16px;line-height:1.85;margin-top:12px}
.divider{height:1px;background:var(--line-soft);border:0;margin:0}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:40px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;
  transition:all .2s var(--ease);white-space:nowrap;
}
.btn-lg{height:48px;padding:0 26px;font-size:16px}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 18px rgba(18,201,182,.28)}
.btn-primary:hover{background:var(--brand-deep);color:#fff;transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px);filter:brightness(.96)}
.btn-outline{background:transparent;color:var(--brand-deep);border:1.5px solid var(--brand)}
.btn-outline:hover{background:var(--brand-soft);color:var(--brand-deep)}
.btn-ghost{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.42)}
.btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff}
.btn-text{color:var(--brand-deep);font-weight:600;display:inline-flex;align-items:center;gap:6px;padding:0}
.btn-text .arrow{transition:transform .2s var(--ease)}
.btn-text:hover .arrow{transform:translateX(3px)}
.btn:disabled,.btn[disabled]{opacity:.45;box-shadow:none;transform:none;pointer-events:none}
.btn-block{width:100%}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(246,247,251,.92);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid transparent;
  transition:box-shadow .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease);
}
.site-header.scrolled{
  background:#fff;border-bottom-color:var(--line);
  box-shadow:0 4px 16px rgba(20,17,31,.06);
}
.brand-bar{display:flex;align-items:center;gap:18px;height:56px;transition:height .2s var(--ease)}
.site-header.scrolled .brand-bar{height:52px}
.logo{display:inline-flex;align-items:center;gap:10px;font-size:18px;font-weight:800;color:var(--ink-900);letter-spacing:-.02em}
.logo-mark{
  width:26px;height:26px;border-radius:9px;flex:0 0 auto;
  background:linear-gradient(140deg,var(--brand),var(--brand-deep));
  position:relative;transform:rotate(-8deg);
  box-shadow:0 4px 12px rgba(18,201,182,.35);
}
.logo-mark::after{content:"";position:absolute;inset:8px;border-radius:3px;background:var(--highlight)}
.logo:hover{color:var(--ink-900)}
.brand-tags{display:flex;align-items:center;gap:8px;margin-left:auto}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  height:30px;padding:0 13px;border-radius:999px;
  font-size:13px;letter-spacing:.04em;font-weight:600;
  background:var(--brand-soft);color:var(--brand-deep);
  transition:all .2s var(--ease);
}
.tag:hover{background:var(--brand);color:#fff}
.tag .dot{width:6px;height:6px;border-radius:50%;background:var(--highlight)}
.header-actions{display:flex;align-items:center;gap:10px}
.icon-btn{
  width:36px;height:36px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;
  color:var(--ink-500);background:#fff;border:1px solid var(--line);transition:all .2s var(--ease);
}
.icon-btn:hover{color:var(--brand-deep);border-color:var(--brand)}
.search-open{
  display:inline-flex;align-items:center;gap:8px;height:36px;padding:0 16px;border-radius:999px;
  background:#fff;border:1px solid var(--line);color:var(--ink-500);font-size:14px;
  transition:all .2s var(--ease);
}
.search-open:hover{border-color:var(--brand);color:var(--brand-deep)}
.burger{display:none}

.nav-row{border-top:1px solid var(--line-soft);transition:padding .2s var(--ease)}
.site-header.scrolled .nav-row{border-top-color:transparent}
.nav-inner{display:flex;align-items:center;gap:20px;height:48px;transition:height .2s var(--ease)}
.site-header.scrolled .nav-inner{height:44px}
.main-nav{display:flex;align-items:center;gap:6px;flex:1;min-width:0;overflow-x:auto;scrollbar-width:none}
.main-nav::-webkit-scrollbar{display:none}
.main-nav a{
  position:relative;display:inline-block;padding:12px 14px;
  font-size:15px;font-weight:600;color:var(--ink-500);white-space:nowrap;
  transition:color .2s var(--ease);
}
.main-nav a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:6px;height:2px;border-radius:2px;
  background:var(--brand);transform:scaleX(0);transform-origin:left;transition:transform .2s var(--ease);
}
.main-nav a:hover{color:var(--ink-900)}
.main-nav a:hover::after{transform:scaleX(1)}
.main-nav a.active{color:var(--ink-900)}
.main-nav a.active::after{transform:scaleX(1)}
.nav-search{
  display:flex;align-items:center;gap:8px;height:36px;padding:0 16px;
  border-radius:999px;background:#fff;border:1px solid var(--line);min-width:220px;
}
.nav-search input{border:0;background:transparent;outline:none;width:100%;font-size:14px}
.nav-search:focus-within{border-color:var(--brand);background:rgba(18,201,182,.04)}

/* 移动抽屉 */
.drawer-mask{position:fixed;inset:0;background:rgba(20,17,31,.55);opacity:0;visibility:hidden;transition:opacity .25s var(--ease),visibility .25s;z-index:80}
.drawer-mask.open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(84vw,360px);background:#fff;z-index:90;
  transform:translateX(100%);transition:transform .3s var(--ease);
  display:flex;flex-direction:column;padding:22px;overflow-y:auto;
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line-soft)}
.drawer-title{font-size:16px;font-weight:800;color:var(--ink-900)}
.drawer-nav{padding:14px 0;display:flex;flex-direction:column}
.drawer-nav a{
  display:flex;align-items:center;justify-content:space-between;
  height:48px;padding:0 8px;border-radius:10px;
  font-size:15px;font-weight:600;color:var(--ink-700);
}
.drawer-nav a:hover,.drawer-nav a.active{background:var(--brand-soft);color:var(--brand-deep)}
.drawer-foot{margin-top:auto;padding-top:18px;border-top:1px solid var(--line-soft)}

/* ============ 页面头 ============ */
.page-head{
  position:relative;overflow:hidden;
  background:linear-gradient(160deg,#171326,#221A3A);
  color:#fff;padding:56px 0 64px;
}
.page-head::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 78%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 78%);
}
.page-head .container{position:relative;z-index:2}
.page-head h1{color:#fff;max-width:820px;font-size:38px}
.crumbs{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.62);margin-bottom:18px;flex-wrap:wrap}
.crumbs a{color:rgba(255,255,255,.72)}
.crumbs a:hover{color:#fff}
.crumbs .sep{opacity:.5}
.page-lead{max-width:680px;margin-top:16px;font-size:17px;line-height:1.85;color:rgba(255,255,255,.76)}
.page-head-visual{
  display:grid;grid-template-columns:1fr 320px;gap:32px;align-items:center;
}
.page-head-badges{display:flex;gap:10px;flex-wrap:wrap;margin-top:26px}
.chip{
  display:inline-flex;align-items:center;gap:8px;height:32px;padding:0 14px;border-radius:999px;
  font-size:13px;font-weight:600;letter-spacing:.04em;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);color:rgba(255,255,255,.86);
}
.chip b{color:var(--brand);font-family:var(--mono)}
.page-head-figure{position:relative;border-radius:16px;overflow:hidden;border:1px solid rgba(255,255,255,.14)}
.page-head-figure img{width:100%;height:200px;object-fit:cover;border-radius:0}
.page-head-figure figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:10px 14px;font-size:12.5px;
  color:rgba(255,255,255,.86);background:linear-gradient(0deg,rgba(23,19,38,.92),rgba(23,19,38,0));
}

/* ============ 时间轴 / 步骤条 ============ */
.timeline-wrap{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:40px;align-items:start}
.steps{position:relative}
.step{
  display:grid;grid-template-columns:64px minmax(0,1fr);gap:20px;
  position:relative;padding-bottom:26px;
}
.step::before{
  content:"";position:absolute;left:31px;top:56px;bottom:0;width:2px;
  background:linear-gradient(180deg,var(--brand-soft),var(--line));
}
.step:last-child{padding-bottom:0}
.step:last-child::before{display:none}
.step-rail{display:flex;flex-direction:column;align-items:center;gap:8px}
.step-num{
  width:56px;height:56px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:19px;font-weight:700;
  color:var(--brand-deep);background:#fff;border:2px solid var(--brand);position:relative;z-index:2;
  box-shadow:0 6px 18px rgba(18,201,182,.18);
}
.step.done .step-num{background:var(--brand);color:#fff}
.step-card{
  background:var(--bg-card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px 24px;box-shadow:var(--shadow-card);transition:box-shadow .2s var(--ease),transform .2s var(--ease),border-color .2s var(--ease);
}
.step-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.step.focused .step-card{border-color:var(--brand);box-shadow:0 0 0 4px var(--brand-soft)}
.step-card h3{font-size:19px;margin-bottom:8px}
.step-card > p{font-size:15px;color:var(--ink-500);line-height:1.8;margin-bottom:14px}
.step-meta{display:flex;gap:14px;flex-wrap:wrap;font-size:13px;color:var(--ink-300);margin-bottom:14px}
.step-meta span{display:inline-flex;align-items:center;gap:6px}
.step-toggle{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14px;font-weight:600;color:var(--brand-deep);
  padding:6px 0;
}
.step-toggle .sign{
  width:20px;height:20px;border-radius:50%;background:var(--brand-soft);color:var(--brand-deep);
  display:inline-flex;align-items:center;justify-content:center;font-size:14px;line-height:1;
  transition:transform .2s var(--ease);
}
.step-toggle[aria-expanded="true"] .sign{transform:rotate(180deg)}
.step-detail{
  margin-top:14px;padding-top:16px;border-top:1px dashed var(--line);
  font-size:15px;line-height:1.9;color:var(--ink-500);
}
.step-detail ul{display:flex;flex-direction:column;gap:8px}
.step-detail li{position:relative;padding-left:20px}
.step-detail li::before{
  content:"";position:absolute;left:0;top:12px;width:8px;height:8px;border-radius:50%;
  background:var(--brand-soft);border:2px solid var(--brand);
}

/* ============ 侧栏 ============ */
.side-card{
  background:var(--bg-card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--shadow-card);margin-bottom:20px;
}
.side-card h4{margin-bottom:14px;font-size:16px}
.side-list{display:flex;flex-direction:column;gap:12px}
.side-list a{
  display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:var(--ink-700);font-weight:600;
  line-height:1.6;
}
.side-list a:hover{color:var(--brand-deep)}
.side-list .idx{
  font-family:var(--mono);font-size:13px;color:var(--brand-deep);background:var(--brand-soft);
  border-radius:6px;padding:2px 7px;flex:0 0 auto;margin-top:2px;
}
.side-figure{border-radius:14px;overflow:hidden;margin-bottom:14px;border:1px solid var(--line)}
.side-figure img{width:100%;height:150px;object-fit:cover;border-radius:0}
.side-note{font-size:13.5px;color:var(--ink-300);line-height:1.8}

/* ============ 常见卡点 ============ */
.pit-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.pit{
  position:relative;background:var(--bg-card);border:1px solid var(--line);border-radius:14px;
  padding:20px 22px 20px 26px;box-shadow:var(--shadow-card);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease);
}
.pit::before{content:"";position:absolute;left:0;top:18px;bottom:18px;width:3px;border-radius:3px;background:var(--brand)}
.pit:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.pit h3{font-size:17px;margin-bottom:8px}
.pit p{font-size:14.5px;color:var(--ink-500);line-height:1.8}

/* ============ 准备清单 + 图文 ============ */
.split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:44px;align-items:center}
.split-figure{position:relative;border-radius:18px;overflow:hidden;box-shadow:var(--shadow-card)}
.split-figure img{width:100%;height:360px;object-fit:cover;border-radius:0}
.split-figure .badge-float{
  position:absolute;left:18px;bottom:18px;background:rgba(255,255,255,.94);
  border-radius:999px;padding:8px 16px;font-size:13px;font-weight:700;color:var(--brand-deep);
  box-shadow:0 8px 24px rgba(20,17,31,.12);
}
.check-list{display:flex;flex-direction:column;gap:14px;margin-top:22px}
.check-list li{
  display:flex;gap:12px;align-items:flex-start;font-size:15.5px;line-height:1.75;color:var(--ink-700);
}
.check-list .tick{
  flex:0 0 auto;width:24px;height:24px;border-radius:8px;background:var(--brand-soft);
  display:inline-flex;align-items:center;justify-content:center;color:var(--brand-deep);
  font-size:13px;font-weight:700;margin-top:5px;
}
.check-list b{color:var(--ink-900)}

/* ============ FAQ ============ */
.faq{display:flex;flex-direction:column;gap:14px;max-width:900px}
.faq-item{
  background:var(--bg-card);border:1px solid var(--line);border-radius:14px;
  overflow:hidden;transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.faq-item.open{border-color:var(--brand);box-shadow:0 0 0 4px var(--brand-soft)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;text-align:start;font-size:17px;font-weight:600;color:var(--ink-900);
  transition:color .2s var(--ease);
}
.faq-item.open .faq-q{color:var(--brand-deep)}
.faq-q .sign{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;background:var(--brand-soft);color:var(--brand-deep);
  display:inline-flex;align-items:center;justify-content:center;font-size:15px;font-weight:700;
  transition:transform .2s var(--ease);
}
.faq-item.open .faq-q .sign{transform:rotate(180deg)}
.faq-a{padding:0 22px 20px;font-size:15px;line-height:1.9;color:var(--ink-500)}

/* ============ 深色 CTA ============ */
.cta-block{
  background:linear-gradient(160deg,#171326,#221A3A);
  border-radius:24px;padding:48px;color:#fff;position:relative;overflow:hidden;
}
.cta-block::after{
  content:"";position:absolute;right:-80px;top:-60px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle,rgba(18,201,182,.34),transparent 68%);
}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:32px;align-items:center}
.cta-block h2{color:#fff;font-size:28px}
.cta-block p{color:rgba(255,255,255,.72);font-size:16px;margin-top:12px;max-width:600px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}
.cta-stats{display:flex;gap:34px;margin-top:26px;flex-wrap:wrap}
.cta-stat b{display:block;font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:32px;color:var(--brand);line-height:1.2}
.cta-stat span{font-size:13px;color:rgba(255,255,255,.6)}

/* ============ 隐私说明条 ============ */
.notice-bar{background:#EDF1FA;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.notice-inner{display:flex;gap:18px;align-items:center;padding:20px 0;flex-wrap:wrap}
.notice-inner .ic{
  width:34px;height:34px;border-radius:10px;background:#fff;border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;color:var(--brand-deep);font-weight:700;flex:0 0 auto;
}
.notice-inner p{margin:0;font-size:14.5px;color:var(--ink-500);line-height:1.8;flex:1;min-width:240px}
.notice-inner a{font-size:14px;font-weight:600;white-space:nowrap}

/* ============ 页脚 ============ */
.site-footer{background:var(--bg-deep);color:rgba(255,255,255,.72);padding:64px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px}
.site-footer .logo{color:#fff;font-size:17px}
.site-footer .logo:hover{color:#fff}
.footer-brand p{font-size:14px;line-height:1.9;margin:16px 0 14px;color:rgba(255,255,255,.64)}
.footer-contact{font-size:13.5px;color:rgba(255,255,255,.5)}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.68)}
.footer-col a:hover{color:var(--brand)}
.footer-sub h4{color:#fff;font-size:15px;margin-bottom:12px}
.footer-sub p{font-size:13.5px;line-height:1.8;color:rgba(255,255,255,.6);margin-bottom:14px}
.footer-sub form{display:flex;gap:10px}
.footer-sub input{
  flex:1;height:44px;border-radius:var(--r-btn);border:1px solid rgba(255,255,255,.16);
  background:rgba(255,255,255,.06);color:#fff;padding:0 14px;font-size:14px;outline:none;
}
.footer-sub input::placeholder{color:rgba(255,255,255,.42)}
.footer-sub input:focus{border-color:var(--brand);background:rgba(18,201,182,.10)}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ============ 弹层 ============ */
.modal-mask{
  position:fixed;inset:0;background:rgba(20,17,31,.55);z-index:100;
  display:flex;align-items:center;justify-content:center;padding:24px;
  opacity:0;visibility:hidden;transition:opacity .25s var(--ease),visibility .25s;
}
.modal-mask.open{opacity:1;visibility:visible}
.modal-card{
  position:relative;width:100%;max-width:480px;background:#fff;border-radius:var(--r-modal);
  padding:32px;box-shadow:0 24px 64px rgba(20,17,31,.28);
  transform:translateY(12px);transition:transform .28s var(--ease);
}
.modal-mask.open .modal-card{transform:translateY(0)}
.modal-card h3{font-size:22px;margin-bottom:10px}
.modal-card .modal-desc{font-size:14px;line-height:1.8;color:var(--ink-500);margin-bottom:22px}
.modal-close{
  position:absolute;right:16px;top:16px;width:32px;height:32px;border-radius:50%;
  background:var(--bg-page);color:var(--ink-500);display:inline-flex;align-items:center;justify-content:center;
  font-size:17px;line-height:1;
}
.modal-close:hover{background:var(--line);color:var(--ink-900)}
.field{margin-bottom:16px}
.field label{display:block;font-size:14px;font-weight:600;color:var(--ink-700);margin-bottom:8px}
.field input,.field textarea{
  width:100%;height:48px;border-radius:var(--r-btn);border:1px solid var(--line);
  padding:0 14px;outline:none;background:#fff;transition:all .2s var(--ease);
}
.field textarea{height:96px;padding:12px 14px;line-height:1.7;resize:vertical}
.field input:focus,.field textarea:focus{border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft)}
.field.error input,.field.error textarea{border-color:var(--err)}
.field .err-msg{display:none;font-size:12px;color:var(--err);margin-top:6px}
.field.error .err-msg{display:block}
.consent{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--ink-500);line-height:1.7;margin:6px 0 20px}
.consent input{margin-top:4px;width:16px;height:16px;accent-color:var(--brand)}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .container{padding:0 24px}
  .page-head-visual{grid-template-columns:1fr;gap:26px}
  .page-head-figure{max-width:520px}
  .timeline-wrap{grid-template-columns:1fr;gap:32px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px}
  .footer-sub{grid-column:1 / -1}
}
@media (max-width:991px){
  h1{font-size:32px}
  .page-head h1{font-size:30px}
  .section{padding:56px 0}
  .brand-tags{display:none}
  .nav-row{display:none}
  .burger{display:inline-flex}
  .split{grid-template-columns:1fr;gap:28px}
  .split-figure img{height:280px}
  .pit-grid{grid-template-columns:1fr}
  .cta-inner{grid-template-columns:1fr;gap:24px}
  .cta-block{padding:36px 28px}
}
@media (max-width:767px){
  body{font-size:16px}
  .container{padding:0 16px}
  h1{font-size:28px;line-height:1.35}
  h2{font-size:24px}
  h3{font-size:19px}
  .section{padding:44px 0}
  .step{grid-template-columns:48px minmax(0,1fr);gap:14px}
  .step-num{width:44px;height:44px;font-size:16px}
  .step::before{left:21px;top:46px}
  .step-card{padding:18px 16px}
  .faq-q{font-size:15.5px;padding:16px}
  .faq-a{padding:0 16px 18px}
  .cta-stats{gap:22px}
  .cta-stat b{font-size:26px}
  .btn-lg{width:100%}
  .cta-actions{flex-direction:column;width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-sub form{flex-direction:column}
  .footer-sub .btn{width:100%}
  .footer-bottom{flex-direction:column;gap:8px}
  .modal-mask{align-items:flex-end;padding:0}
  .modal-card{
    max-width:100%;border-radius:20px 20px 0 0;padding:26px 20px 30px;
    transform:translateY(100%);
  }
  .modal-mask.open .modal-card{transform:translateY(0)}
}
@media (max-width:480px){
  body{font-size:15.5px}
  .page-head{padding:40px 0 48px}
  .page-head h1{font-size:25px}
  .page-lead{font-size:15px}
  .step-meta{display:none}
  .split-figure img{height:220px}
  .footer-bottom span:last-child{display:none}
}