/* roulang page: index */
:root{
  --brand:#1e63ff;
  --brand-light:#4f8bff;
  --brand-2:#2fd4b6;
  --brand-deep:#0b1a33;
  --deep-2:#132c50;
  --accent:#ffb545;
  --bg:#f2f6fc;
  --surface:#ffffff;
  --ink:#0f1b2e;
  --muted:#5f7189;
  --line:#e3eaf4;
  --radius:16px;
  --radius-sm:11px;
  --shadow:0 8px 24px rgba(15,27,46,.07);
  --shadow-lg:0 20px 44px rgba(15,27,46,.14);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:15px;line-height:1.78;color:var(--ink);background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;letter-spacing:-.3px}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:8px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:72px 0}
.section--alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section--tight{padding:56px 0}
.section--deep{background:linear-gradient(125deg,#0b1a33 0%,#122a4c 55%,#123a5e 100%);color:#dbe7f6}
.section--deep .sec-title{color:#fff}
.section--deep .sec-desc{color:#a9c0dc}

.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;margin-bottom:34px;flex-wrap:wrap}
.sec-title{font-size:26px;display:flex;align-items:center;gap:12px}
.sec-title::before{content:"";width:6px;height:24px;border-radius:4px;background:linear-gradient(180deg,var(--brand-2),var(--brand))}
.sec-desc{color:var(--muted);font-size:14.5px;max-width:660px;margin-top:10px}

/* header */
.site-header{position:sticky;top:0;z-index:90;background:rgba(255,255,255,.95);backdrop-filter:blur(14px);border-bottom:1px solid var(--line);transition:box-shadow .2s}
.site-header.is-scrolled{box-shadow:0 6px 20px rgba(15,27,46,.08)}
.header-inner{display:flex;align-items:center;gap:18px;height:64px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{width:36px;height:36px;border-radius:11px;display:grid;place-items:center;color:#fff;font-weight:800;font-size:15px;letter-spacing:-.5px;background:linear-gradient(135deg,var(--brand),var(--brand-2));box-shadow:0 8px 18px rgba(30,99,255,.32)}
.brand-text{display:flex;flex-direction:column;line-height:1.16}
.brand-text b{font-size:15.5px;font-weight:800;letter-spacing:-.4px;color:var(--ink)}
.brand-text em{font-style:normal;font-size:11px;color:var(--muted);letter-spacing:1.6px}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{display:inline-flex;align-items:center;min-height:40px;padding:0 13px;border-radius:10px;font-size:14.5px;font-weight:500;color:var(--muted);transition:color .18s,background .18s}
.nav-link:hover{color:var(--brand);background:#eef4ff}
.nav-link.active{color:var(--brand);background:#e8f0ff;font-weight:700}
.header-cta{min-height:40px;padding:0 18px;border-radius:10px;background:linear-gradient(135deg,#2f7bff,#1e63ff);color:#fff;font-size:14px;font-weight:600;display:inline-flex;align-items:center;box-shadow:0 8px 18px rgba(30,99,255,.28);transition:transform .18s,box-shadow .18s}
.header-cta:hover{transform:translateY(-2px);box-shadow:0 12px 24px rgba(30,99,255,.36)}

.has-mega{position:relative}
.mega-btn{background:none;border:none;cursor:pointer;display:inline-flex;align-items:center;gap:6px;color:var(--muted);font-size:14.5px;min-height:40px;padding:0 13px;border-radius:10px;transition:.18s}
.mega-btn:hover{color:var(--brand);background:#eef4ff}
.mega-btn .caret{width:7px;height:7px;border-right:1.6px solid currentColor;border-bottom:1.6px solid currentColor;transform:rotate(45deg) translateY(-2px);transition:transform .2s}
.has-mega:hover .caret{transform:rotate(225deg) translateY(-2px)}
.mega-panel{position:absolute;right:0;top:calc(100% + 10px);width:540px;background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow-lg);padding:20px;display:grid;grid-template-columns:1fr 1fr;gap:20px;opacity:0;visibility:hidden;transform:translateY(8px);transition:opacity .2s ease,transform .2s ease,visibility .2s}
.has-mega:hover .mega-panel,.has-mega:focus-within .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
.mega-col h4{font-size:12px;letter-spacing:1.4px;color:var(--muted);text-transform:uppercase;margin-bottom:12px}
.mega-link{display:block;padding:10px 12px;border-radius:10px;font-size:14px;font-weight:600;color:var(--ink);transition:.18s}
.mega-link small{display:block;font-weight:400;font-size:12.5px;color:var(--muted);margin-top:2px}
.mega-link:hover{background:#f1f6ff;color:var(--brand)}
.mega-note{font-size:13px;color:var(--muted);line-height:1.7;padding:10px 12px;background:#f7faff;border-radius:10px}

.nav-burger{display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);background:#fff;cursor:pointer;place-items:center;gap:4px;padding:11px 10px;margin-left:auto}
.nav-burger span{display:block;width:20px;height:2px;border-radius:2px;background:var(--ink)}

/* hero */
.hero{position:relative;overflow:hidden;color:#fff;padding:64px 0 76px;background:linear-gradient(112deg,rgba(7,18,37,.95) 0%,rgba(10,28,58,.92) 46%,rgba(13,45,80,.84) 100%),url('/assets/images/b2ad5261e400fe7e.jpg') center/cover no-repeat}
.hero::after{content:"";position:absolute;right:-130px;top:-150px;width:440px;height:440px;border-radius:50%;background:radial-gradient(circle,rgba(47,212,182,.28),transparent 68%);pointer-events:none}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.12fr .88fr;gap:44px;align-items:start}
.tag{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:99px;font-size:13px;font-weight:600}
.tag-glass{background:rgba(47,212,182,.14);border:1px solid rgba(47,212,182,.42);color:#8df3e0}
.tag-glass::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--brand-2);box-shadow:0 0 0 4px rgba(47,212,182,.18)}
.hero h1{font-size:40px;line-height:1.24;margin:18px 0 16px;color:#fff;letter-spacing:-.8px}
.hero-lead{color:#c6d7f0;font-size:15.5px;line-height:1.9;max-width:640px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 22px;border-radius:10px;font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:transform .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease}
.btn-primary{background:linear-gradient(135deg,#2f7bff,#1e63ff);color:#fff;box-shadow:0 10px 24px rgba(30,99,255,.34)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 32px rgba(30,99,255,.44)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.32);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.18);transform:translateY(-2px)}
.btn-outline{background:#fff;border-color:#cfdcf0;color:var(--brand)}
.btn-outline:hover{border-color:var(--brand);transform:translateY(-2px);box-shadow:0 10px 22px rgba(30,99,255,.14)}
.hero-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.chip{padding:6px 14px;border-radius:99px;font-size:13px;color:#dbe8ff;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.2)}

.hero-board{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.16);border-radius:20px;padding:24px;backdrop-filter:blur(10px);box-shadow:0 24px 48px rgba(3,12,28,.35)}
.board-head{display:flex;align-items:center;justify-content:space-between;font-size:14px;font-weight:700;color:#fff;padding-bottom:14px;border-bottom:1px solid rgba(255,255,255,.14)}
.badge{display:inline-flex;align-items:center;padding:2px 9px;border-radius:99px;font-size:11.5px;font-weight:700;letter-spacing:.4px}
.badge-live{background:rgba(47,212,182,.18);color:#7cf0da;border:1px solid rgba(47,212,182,.4)}
.rank-list{margin-top:14px;display:flex;flex-direction:column;gap:14px}
.rank-item{display:grid;grid-template-columns:22px 1fr auto;gap:10px;align-items:center}
.rank-no{font-size:12px;font-weight:800;color:#7f9bc4;text-align:center}
.rank-item.top .rank-no{color:var(--accent)}
.rank-name{font-size:13.5px;color:#dbe8ff;margin-bottom:5px}
.rank-val{font-size:12.5px;color:#8fb0d8;font-variant-numeric:tabular-nums}
.bar{height:6px;border-radius:99px;background:rgba(255,255,255,.13);overflow:hidden}
.bar i{display:block;height:100%;border-radius:99px;background:linear-gradient(90deg,var(--brand-2),var(--brand-light))}
.board-kpis{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:20px;padding-top:18px;border-top:1px solid rgba(255,255,255,.14)}
.kpi{text-align:center}
.kpi b{display:block;font-size:19px;color:#fff;font-variant-numeric:tabular-nums}
.kpi span{font-size:11.5px;color:#8fb0d8}

/* cards */
.grid{display:grid;gap:22px}
.grid-4{grid-template-columns:repeat(4,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:#cbdcf6}
.card-icon{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;background:#eaf1ff;color:var(--brand);font-weight:800;font-size:14px;margin-bottom:16px;letter-spacing:-.5px}
.card h3{font-size:17px;margin-bottom:10px}
.card p{font-size:14px;color:var(--muted);line-height:1.78}
.card-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.pill{font-size:12px;padding:3px 10px;border-radius:99px;background:#f1f6ff;color:#3b6bbd;border:1px solid #dfeafc}

/* feed */
.feed-grid{display:grid;grid-template-columns:1.55fr 1fr;gap:32px;align-items:start}
.post-list{display:flex;flex-direction:column;gap:18px}
.post-card{display:grid;grid-template-columns:190px 1fr;gap:18px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow);transition:transform .2s,box-shadow .2s,border-color .2s}
.post-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:#cbdcf6}
.post-thumb{display:block;border-radius:11px;overflow:hidden;aspect-ratio:16/10;background:#dfe8f5}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .32s ease}
.post-card:hover .post-thumb img{transform:scale(1.05)}
.post-meta{display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--muted);margin-bottom:8px}
.post-meta .cat{background:#eaf1ff;color:#2559c7;font-weight:600;padding:2px 10px;border-radius:99px}
.post-card h3{font-size:16.5px;line-height:1.5;margin-bottom:8px}
.post-card h3 a:hover{color:var(--brand)}
.post-card p{font-size:13.5px;color:var(--muted);line-height:1.75}
.empty{background:var(--surface);border:1px dashed #c9d8ee;border-radius:var(--radius);padding:34px;text-align:center;color:var(--muted);font-size:14px}

.side-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow)}
.side-card + .side-card{margin-top:20px}
.side-title{font-size:15.5px;display:flex;align-items:center;gap:9px;margin-bottom:16px}
.side-title::before{content:"";width:4px;height:16px;border-radius:3px;background:var(--brand)}
.hot-list{display:flex;flex-direction:column}
.hot-item{display:flex;gap:12px;align-items:flex-start;padding:11px 0;border-bottom:1px dashed var(--line);font-size:14px;transition:.18s}
.hot-item:last-child{border-bottom:none}
.hot-item:hover{color:var(--brand)}
.hot-item .num{min-width:22px;height:22px;border-radius:7px;background:#eef4ff;color:#2559c7;font-size:12px;font-weight:700;display:grid;place-items:center;flex-shrink:0;margin-top:2px}
.hot-item.top .num{background:linear-gradient(135deg,#ffb545,#ff8a3d);color:#fff}
.hot-item .t{line-height:1.55}
.side-note{font-size:13px;color:var(--muted);line-height:1.75;margin-top:12px}

/* topics */
.topic-rail{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.topic-card{position:relative;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);background:#0b1a33;box-shadow:var(--shadow);transition:transform .2s,box-shadow .2s}
.topic-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.topic-card img{width:100%;height:158px;object-fit:cover;opacity:.72;transition:transform .35s ease,opacity .2s}
.topic-card:hover img{transform:scale(1.06);opacity:.86}
.topic-body{position:relative;padding:16px 18px 20px;margin-top:-46px;background:linear-gradient(180deg,rgba(11,26,51,0) 0%,rgba(11,26,51,.92) 42%,#0b1a33 100%)}
.topic-body h3{font-size:15.5px;color:#fff;margin-bottom:6px}
.topic-body p{font-size:12.8px;color:#a9c0dc;line-height:1.65}

/* steps */
.step-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.step-card{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:26px 24px;box-shadow:var(--shadow);transition:transform .2s,box-shadow .2s,border-color .2s}
.step-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:#cbdcf6}
.step-no{font-size:13px;font-weight:800;color:var(--brand);letter-spacing:1.5px;margin-bottom:10px}
.step-card h3{font-size:17px;margin-bottom:10px}
.step-card p{font-size:14px;color:var(--muted)}
.step-card::after{content:"";position:absolute;left:0;top:0;width:100%;height:3px;border-radius:16px 16px 0 0;background:linear-gradient(90deg,var(--brand-2),var(--brand))}

/* split */
.split{display:grid;grid-template-columns:1.05fr 1fr;gap:44px;align-items:center}
.split-media{border-radius:20px;overflow:hidden;box-shadow:var(--shadow-lg);border:1px solid var(--line)}
.split-media img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3}
.scene-list{display:flex;flex-direction:column;gap:16px}
.scene{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:18px 20px;box-shadow:var(--shadow);transition:.2s}
.scene:hover{border-color:#cbdcf6;transform:translateY(-2px)}
.scene h3{font-size:16px;margin-bottom:6px;display:flex;align-items:center;gap:10px}
.scene h3 .dot{width:8px;height:8px;border-radius:50%;background:var(--brand-2)}
.scene p{font-size:13.8px;color:var(--muted)}

/* table */
.table-wrap{overflow-x:auto;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.compare{width:100%;border-collapse:collapse;min-width:680px;font-size:14.5px}
.compare thead th{background:#f3f8ff;color:#3f5a7d;font-size:13px;letter-spacing:.4px;text-align:left;padding:14px 18px;border-bottom:1px solid var(--line);font-weight:700}
.compare td{padding:15px 18px;border-bottom:1px solid var(--line);color:#33455f}
.compare tbody tr:last-child td{border-bottom:none}
.compare tbody tr:hover td{background:#f8fbff}
.compare .is-rec{background:#eef5ff;color:#17419c;font-weight:700}
.compare .rec-tag{display:inline-block;margin-left:8px;font-size:11px;padding:1px 8px;border-radius:99px;background:var(--brand);color:#fff;font-weight:700;vertical-align:middle}

/* data */
.data-band{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.data-cell{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);border-radius:16px;padding:22px}
.data-cell b{display:block;font-size:27px;color:#fff;font-variant-numeric:tabular-nums;letter-spacing:-.5px}
.data-cell span{font-size:13px;color:#a9c0dc}
.meter{margin-top:34px;display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.meter-item span{display:flex;justify-content:space-between;font-size:13px;color:#c6d7f0;margin-bottom:8px}
.meter-item .bar{background:rgba(255,255,255,.12)}

/* rewards */
.reward-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.reward{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);transition:.2s}
.reward:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:#cbdcf6}
.reward-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.reward-top .lv{font-size:12px;font-weight:700;color:#8a5a00;background:#fff4dc;border:1px solid #ffe0ab;padding:3px 10px;border-radius:99px}
.reward h3{font-size:16.5px;margin-bottom:8px}
.reward p{font-size:13.5px;color:var(--muted)}
.progress{height:8px;border-radius:99px;background:#eef3fa;overflow:hidden;margin-top:16px}
.progress i{display:block;height:100%;border-radius:99px;background:linear-gradient(90deg,var(--brand-2),var(--brand))}
.progress-tip{display:flex;justify-content:space-between;font-size:12px;color:var(--muted);margin-top:8px}

/* quotes */
.quote-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.quote{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);transition:.2s}
.quote:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:#cbdcf6}
.quote p{font-size:14.5px;line-height:1.85;color:#2c3d55}
.quote-user{display:flex;align-items:center;gap:12px;margin-top:18px;padding-top:16px;border-top:1px dashed var(--line)}
.avatar{width:38px;height:38px;border-radius:11px;display:grid;place-items:center;font-weight:800;font-size:14px;color:#fff;background:linear-gradient(135deg,#2f7bff,#2fd4b6)}
.quote-user b{display:block;font-size:13.5px}
.quote-user span{font-size:12px;color:var(--muted)}

/* latest list */
.latest-list{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.latest-item{display:flex;gap:14px;align-items:flex-start;background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:18px 20px;box-shadow:var(--shadow);transition:.2s}
.latest-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:#cbdcf6}
.latest-item .dot{width:9px;height:9px;border-radius:50%;background:linear-gradient(135deg,var(--brand-2),var(--brand));flex-shrink:0;margin-top:8px}
.latest-item h3{font-size:15px;line-height:1.55;margin-bottom:6px}
.latest-item h3 a:hover{color:var(--brand)}
.latest-item .meta{font-size:12.5px;color:var(--muted)}

/* channel */
.channel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.channel{display:block;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow);transition:.2s;position:relative;overflow:hidden}
.channel:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:#cbdcf6}
.channel .cnum{font-size:12px;font-weight:800;letter-spacing:1.6px;color:var(--brand)}
.channel h3{font-size:18px;margin:10px 0 10px}
.channel p{font-size:13.8px;color:var(--muted)}
.channel .go{margin-top:16px;font-size:13.5px;font-weight:700;color:var(--brand);display:inline-flex;align-items:center;gap:6px}
.channel::after{content:"";position:absolute;right:-40px;bottom:-40px;width:120px;height:120px;border-radius:50%;background:radial-gradient(circle,rgba(30,99,255,.12),transparent 70%)}

/* faq */
.faq-list{display:flex;flex-direction:column;gap:14px;max-width:900px}
.faq{background:var(--surface);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);overflow:hidden;transition:.2s}
.faq:hover{border-color:#cbdcf6}
.faq summary{list-style:none;cursor:pointer;padding:18px 22px;font-size:15.5px;font-weight:700;display:flex;align-items:center;justify-content:space-between;gap:16px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"";width:9px;height:9px;border-right:2px solid var(--muted);border-bottom:2px solid var(--muted);transform:rotate(45deg);transition:transform .2s;flex-shrink:0}
.faq[open] summary::after{transform:rotate(225deg)}
.faq p{padding:0 22px 20px;font-size:14px;color:var(--muted);line-height:1.8}

/* partners */
.partner-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.partner{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:20px;box-shadow:var(--shadow);transition:.2s}
.partner:hover{transform:translateY(-3px);border-color:#cbdcf6;box-shadow:var(--shadow-lg)}
.partner .mark{width:38px;height:38px;border-radius:10px;display:grid;place-items:center;font-weight:800;font-size:13px;color:#2559c7;background:#eaf1ff;margin-bottom:14px}
.partner h3{font-size:15px;margin-bottom:6px}
.partner p{font-size:13px;color:var(--muted)}

/* subscribe */
.subscribe{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center}
.subscribe h2{font-size:29px;color:#fff;margin-bottom:14px}
.subscribe p{color:#a9c0dc;font-size:14.5px;line-height:1.85;max-width:520px}
.sub-form{display:flex;gap:12px;margin-top:22px;flex-wrap:wrap}
.sub-form input{flex:1;min-width:200px;min-height:46px;padding:0 16px;border-radius:10px;border:1px solid rgba(255,255,255,.22);background:rgba(255,255,255,.08);color:#fff;font-size:14.5px;outline:none;transition:.18s}
.sub-form input::placeholder{color:#8fa9c9}
.sub-form input:focus{border-color:var(--brand-2);background:rgba(255,255,255,.14)}
.sub-tip{margin-top:14px;font-size:13.5px;color:#7cf0da}
.sub-panel{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);border-radius:18px;padding:24px}
.sub-panel h3{color:#fff;font-size:16px;margin-bottom:14px}
.sub-panel li{display:flex;gap:10px;align-items:flex-start;font-size:13.8px;color:#c6d7f0;padding:8px 0}
.sub-panel li .tick{width:18px;height:18px;border-radius:6px;background:rgba(47,212,182,.2);color:#7cf0da;font-size:11px;font-weight:800;display:grid;place-items:center;flex-shrink:0;margin-top:3px}

/* footer */
.site-footer{background:#08152a;color:#8fa6c4;padding:56px 0 26px;border-top:1px solid rgba(255,255,255,.08)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand b{color:#fff;font-size:16px;font-weight:800}
.footer-brand .brand-mark{box-shadow:none}
.site-footer p{font-size:13.5px;line-height:1.85;color:#8fa6c4}
.footer-col h4{font-size:13px;letter-spacing:1.4px;color:#c6d7f0;margin-bottom:16px;text-transform:uppercase}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:13.8px;color:#8fa6c4;transition:.18s}
.footer-col a:hover{color:#fff}
.footer-bottom{margin-top:40px;padding-top:22px;border-top:1px solid rgba(255,255,255,.09);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:12.8px;color:#6f88a8}

@media (max-width:1080px){
  .hero h1{font-size:34px}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .topic-rail{grid-template-columns:repeat(2,1fr)}
  .data-band{grid-template-columns:repeat(2,1fr)}
  .reward-grid,.channel-grid,.partner-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:960px){
  .main-nav{position:fixed;left:0;right:0;top:64px;display:none;flex-direction:column;align-items:stretch;background:#fff;padding:12px 20px 20px;gap:4px;border-bottom:1px solid var(--line);box-shadow:0 18px 30px rgba(15,27,46,.12);max-height:calc(100vh - 64px);overflow-y:auto}
  .main-nav.open{display:flex}
  .nav-link{padding:13px 14px;min-height:46px}
  .header-cta{display:none}
  .nav-burger{display:grid}
  .mega-panel{position:static;width:100%;opacity:1;visibility:visible;transform:none;box-shadow:none;border:none;padding:8px 0 0;grid-template-columns:1fr;gap:12px}
  .has-mega:hover .mega-panel{transform:none}
  .hero-grid{grid-template-columns:1fr;gap:34px}
  .hero{padding:48px 0 56px}
  .feed-grid{grid-template-columns:1fr}
  .split{grid-template-columns:1fr;gap:28px}
  .step-grid{grid-template-columns:1fr}
  .quote-grid{grid-template-columns:1fr}
  .latest-list{grid-template-columns:1fr}
  .meter{grid-template-columns:1fr}
  .subscribe{grid-template-columns:1fr;gap:28px}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:620px){
  .container{padding:0 18px}
  .section{padding:52px 0}
  .hero h1{font-size:27px}
  .hero-lead{font-size:14.5px}
  .sec-title{font-size:21px}
  .sec-head{margin-bottom:24px}
  .grid-4,.grid-3,.grid-2,.topic-rail,.data-band,.reward-grid,.channel-grid,.partner-grid,.footer-grid{grid-template-columns:1fr}
  .post-card{grid-template-columns:1fr}
  .post-thumb{aspect-ratio:16/9}
  .board-kpis{grid-template-columns:1fr 1fr}
  .subscribe h2{font-size:23px}
  .btn{width:100%}
  .hero-actions{flex-direction:column}
  .footer-bottom{flex-direction:column}
}

/* roulang page: article */
:root{
  --brand:#1e63ff;
  --brand-light:#4f8bff;
  --brand-2:#2fd4b6;
  --brand-deep:#0b1a33;
  --deep-2:#132c50;
  --accent:#ffb545;
  --bg:#f2f6fc;
  --surface:#ffffff;
  --ink:#0f1b2e;
  --muted:#5f7189;
  --line:#e3eaf4;
  --radius:16px;
  --radius-sm:11px;
  --shadow:0 8px 24px rgba(15,27,46,.07);
  --shadow-lg:0 20px 44px rgba(15,27,46,.14);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:15px;line-height:1.78;color:var(--ink);background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0}
ul,ol{list-style:none}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:72px 0}
.section--alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section--tight{padding:56px 0}
.section--deep{background:linear-gradient(125deg,#0b1a33 0%,#122a4c 55%,#123a5e 100%);color:#dbe7f6}
.section--deep .sec-title{color:#fff}
.section--deep .sec-desc{color:#a9c0dc}
.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:32px}
.sec-title{font-size:26px;line-height:1.35;display:flex;align-items:center;gap:12px;letter-spacing:-.4px}
.sec-title::before{content:"";width:6px;height:24px;border-radius:4px;background:linear-gradient(180deg,var(--brand-2),var(--brand));flex-shrink:0}
.sec-desc{color:var(--muted);font-size:14.5px;max-width:660px;margin-top:8px}
/* header */
.site-header{position:sticky;top:0;z-index:90;background:rgba(255,255,255,.95);backdrop-filter:blur(14px);border-bottom:1px solid var(--line);transition:box-shadow .2s}
.site-header.is-scrolled{box-shadow:0 6px 20px rgba(15,27,46,.08)}
.header-inner{display:flex;align-items:center;gap:18px;height:64px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{width:36px;height:36px;border-radius:11px;display:grid;place-items:center;color:#fff;font-weight:800;font-size:15px;letter-spacing:-.5px;background:linear-gradient(135deg,var(--brand),var(--brand-2));box-shadow:0 8px 18px rgba(30,99,255,.32)}
.brand-text{display:flex;flex-direction:column;line-height:1.16}
.brand-text b{font-size:15.5px;font-weight:800;letter-spacing:-.4px;color:var(--ink)}
.brand-text em{font-style:normal;font-size:11px;color:var(--muted);letter-spacing:1.6px}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{display:inline-flex;align-items:center;min-height:40px;padding:0 13px;border-radius:10px;font-size:14.5px;font-weight:500;color:var(--muted);transition:color .18s,background .18s}
.nav-link:hover{color:var(--brand);background:#eef4ff}
.nav-link.active{color:var(--brand);background:#e8f0ff;font-weight:700}
.header-cta{min-height:40px;padding:0 18px;border-radius:10px;background:linear-gradient(135deg,#2f7bff,#1e63ff);color:#fff;font-size:14px;font-weight:600;display:inline-flex;align-items:center;box-shadow:0 8px 18px rgba(30,99,255,.28);transition:transform .18s,box-shadow .18s}
.header-cta:hover{transform:translateY(-2px);box-shadow:0 12px 24px rgba(30,99,255,.36)}
.has-mega{position:relative}
.mega-btn{background:none;border:none;cursor:pointer;display:inline-flex;align-items:center;gap:6px;color:var(--muted);font-size:14.5px;min-height:40px;padding:0 13px;border-radius:10px;transition:.18s}
.mega-btn:hover{color:var(--brand);background:#eef4ff}
.mega-btn .caret{width:7px;height:7px;border-right:1.6px solid currentColor;border-bottom:1.6px solid currentColor;transform:rotate(45deg) translateY(-2px);transition:transform .2s}
.has-mega:hover .caret{transform:rotate(225deg) translateY(-2px)}
.mega-panel{position:absolute;right:0;top:calc(100% + 10px);width:540px;background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow-lg);padding:20px;display:grid;grid-template-columns:1fr 1fr;gap:20px;opacity:0;visibility:hidden;transform:translateY(8px);transition:opacity .2s ease,transform .2s ease,visibility .2s}
.has-mega:hover .mega-panel,.has-mega:focus-within .mega-panel,.has-mega.is-open .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
.mega-col h4{font-size:12px;letter-spacing:1.4px;color:var(--muted);margin-bottom:12px;font-weight:700}
.mega-link{display:block;padding:10px 12px;border-radius:10px;font-size:14px;font-weight:600;color:var(--ink);transition:.18s}
.mega-link small{display:block;font-weight:400;font-size:12.5px;color:var(--muted);margin-top:2px}
.mega-link:hover{background:#f1f6ff;color:var(--brand)}
.mega-note{font-size:13px;color:var(--muted);line-height:1.7;padding:10px 12px;background:#f7faff;border-radius:10px}
.nav-burger{display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);background:#fff;cursor:pointer;place-items:center;gap:4px;padding:11px 10px;margin-left:auto}
.nav-burger span{display:block;width:20px;height:2px;border-radius:2px;background:var(--ink)}
/* article head */
.post-head{position:relative;overflow:hidden;color:#fff;padding:46px 0 54px;background:linear-gradient(112deg,rgba(7,18,37,.95) 0%,rgba(10,28,58,.92) 48%,rgba(13,45,80,.86) 100%),url('/assets/images/b2ad5261e400fe7e.jpg') center/cover no-repeat}
.post-head::after{content:"";position:absolute;right:-120px;top:-140px;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(47,212,182,.26),transparent 68%);pointer-events:none}
.post-head-inner{position:relative;z-index:2;max-width:880px}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:#9db4d4;margin-bottom:18px}
.crumb a{color:#c6d7f0;transition:color .18s}
.crumb a:hover{color:#fff}
.crumb span.dot{opacity:.5}
.post-head h1{font-size:34px;line-height:1.32;letter-spacing:-.6px;color:#fff;margin-bottom:16px}
.post-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:#b7cbe6}
.post-meta .pill{padding:4px 12px;border-radius:99px;background:rgba(47,212,182,.14);border:1px solid rgba(47,212,182,.42);color:#8df3e0;font-weight:600}
.post-meta .pill--plain{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.24);color:#dce8f8}
.post-lead{color:#c6d7f0;font-size:15.5px;line-height:1.85;margin-top:18px;max-width:760px}
/* layout */
.article-wrap{padding:52px 0 72px}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:40px;align-items:start}
.article-main{min-width:0}
.article-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:34px 38px 40px}
.article-body{max-width:720px;font-size:16px;line-height:1.85;color:#22314a}
.article-body p{margin:0 0 18px}
.article-body h2{font-size:23px;line-height:1.42;margin:34px 0 14px;letter-spacing:-.3px;color:var(--ink);padding-left:14px;border-left:5px solid var(--brand);border-radius:2px}
.article-body h3{font-size:18.5px;line-height:1.5;margin:26px 0 12px;color:var(--ink)}
.article-body h4{font-size:16.5px;margin:22px 0 10px;color:var(--ink)}
.article-body ul,.article-body ol{margin:0 0 20px;padding-left:0}
.article-body ul li{position:relative;padding-left:20px;margin-bottom:10px}
.article-body ul li::before{content:"";position:absolute;left:2px;top:11px;width:7px;height:7px;border-radius:50%;background:linear-gradient(135deg,var(--brand-2),var(--brand))}
.article-body ol{counter-reset:item}
.article-body ol li{position:relative;padding-left:26px;margin-bottom:10px;counter-increment:item}
.article-body ol li::before{content:counter(item);position:absolute;left:0;top:3px;width:19px;height:19px;border-radius:6px;background:#e8f0ff;color:var(--brand);font-size:12px;font-weight:700;display:grid;place-items:center}
.article-body a{color:var(--brand);font-weight:600;border-bottom:1px solid rgba(30,99,255,.28);transition:border-color .18s,color .18s}
.article-body a:hover{color:#0d47c6;border-color:#0d47c6}
.article-body img{border-radius:var(--radius);margin:22px 0;box-shadow:var(--shadow)}
.article-body blockquote{margin:24px 0;padding:18px 22px;background:#f4f8ff;border-left:4px solid var(--brand-light);border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:#2a3d5c;font-size:15.5px}
.article-body table{width:100%;border-collapse:collapse;margin:22px 0;font-size:14.5px;border-radius:var(--radius-sm);overflow:hidden;box-shadow:var(--shadow)}
.article-body th,.article-body td{padding:11px 14px;border-bottom:1px solid var(--line);text-align:left}
.article-body th{background:#eef4ff;color:var(--brand-deep);font-weight:700}
.article-body strong{color:#0d2a52}
.article-body hr{border:none;border-top:1px dashed var(--line);margin:28px 0}
/* key points */
.key-points{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-bottom:30px}
.key-point{background:#f6faff;border:1px solid var(--line);border-radius:var(--radius-sm);padding:16px 16px 14px;transition:transform .2s,box-shadow .2s,border-color .2s}
.key-point:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#cfe0ff}
.key-point b{display:block;font-size:14.5px;color:var(--brand-deep);margin-bottom:6px}
.key-point span{font-size:13px;color:var(--muted);line-height:1.7}
/* sidebar */
.article-side{position:sticky;top:88px;display:flex;flex-direction:column;gap:20px}
.side-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px}
.side-card h3{font-size:15.5px;margin-bottom:14px;display:flex;align-items:center;gap:9px;color:var(--ink)}
.side-card h3::before{content:"";width:5px;height:16px;border-radius:3px;background:linear-gradient(180deg,var(--brand-2),var(--brand))}
.side-list li{margin-bottom:4px}
.side-list a{display:block;padding:9px 10px;border-radius:9px;font-size:14px;color:#2c3f5c;line-height:1.6;transition:background .18s,color .18s}
.side-list a:hover{background:#f1f6ff;color:var(--brand)}
.side-list small{display:block;color:var(--muted);font-size:12px;margin-top:2px}
.side-note{background:linear-gradient(135deg,#0b1a33,#123a5e);color:#d5e4f7;border:none}
.side-note h3{color:#fff}
.side-note h3::before{background:linear-gradient(180deg,var(--brand-2),var(--brand-light))}
.side-note p{font-size:13.5px;line-height:1.8;color:#b6cbe5}
.side-thumb{border-radius:var(--radius-sm);overflow:hidden;margin-bottom:14px}
.side-thumb img{width:100%;height:132px;object-fit:cover;transition:transform .3s}
.side-card:hover .side-thumb img{transform:scale(1.04)}
/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 22px;border-radius:10px;font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:transform .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease}
.btn-primary{background:linear-gradient(135deg,#2f7bff,#1e63ff);color:#fff;box-shadow:0 10px 24px rgba(30,99,255,.34)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 32px rgba(30,99,255,.44)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:#fff;border-color:#cfe0ff;color:var(--brand)}
.btn-ghost:hover{background:#f1f6ff;transform:translateY(-2px);border-color:var(--brand-light)}
.btn:focus-visible,a:focus-visible,button:focus-visible{outline:3px solid rgba(30,99,255,.42);outline-offset:2px;border-radius:10px}
/* reading cards */
.read-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.read-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.read-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:#c9dcff}
.read-card figure{height:158px;overflow:hidden;background:#dde7f5}
.read-card figure img{width:100%;height:100%;object-fit:cover;transition:transform .32s ease}
.read-card:hover figure img{transform:scale(1.05)}
.read-body{padding:18px 20px 20px}
.read-body .tagline{display:inline-flex;align-items:center;padding:3px 10px;border-radius:99px;background:#eaf2ff;color:var(--brand);font-size:12px;font-weight:700;margin-bottom:10px}
.read-body h4{font-size:16px;line-height:1.5;margin-bottom:8px;color:var(--ink)}
.read-body p{font-size:13.5px;color:var(--muted);line-height:1.75}
/* checklist */
.check-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.check-item{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-sm);padding:20px 18px;box-shadow:var(--shadow);transition:transform .2s,box-shadow .2s,border-color .2s}
.check-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:#cfe0ff}
.check-num{width:30px;height:30px;border-radius:9px;display:grid;place-items:center;font-size:13px;font-weight:800;color:#fff;background:linear-gradient(135deg,var(--brand),var(--brand-2));margin-bottom:12px}
.check-item b{display:block;font-size:15px;margin-bottom:6px;color:var(--ink)}
.check-item p{font-size:13.5px;color:var(--muted);line-height:1.75}
/* faq */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:860px}
.faq-item{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-sm);box-shadow:var(--shadow);overflow:hidden;transition:border-color .2s,box-shadow .2s}
.faq-item[open]{border-color:#c9dcff;box-shadow:var(--shadow-lg)}
.faq-item summary{cursor:pointer;list-style:none;padding:17px 22px;font-size:15.5px;font-weight:600;color:var(--ink);display:flex;align-items:center;justify-content:space-between;gap:14px;transition:background .18s}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";font-size:19px;font-weight:600;color:var(--brand);line-height:1}
.faq-item[open] summary::after{content:"−"}
.faq-item summary:hover{background:#f6faff}
.faq-item .faq-body{padding:0 22px 18px;font-size:14.5px;color:#3b4f6d;line-height:1.85}
/* cta */
.cta-band{position:relative;overflow:hidden;border-radius:22px;padding:44px 46px;background:linear-gradient(120deg,#0b1a33 0%,#123a5e 60%,#124a6b 100%);color:#e6effb;display:grid;grid-template-columns:1.35fr .65fr;gap:30px;align-items:center}
.cta-band::after{content:"";position:absolute;right:-90px;bottom:-120px;width:320px;height:320px;border-radius:50%;background:radial-gradient(circle,rgba(47,212,182,.3),transparent 70%)}
.cta-band h2{font-size:26px;line-height:1.4;color:#fff;margin-bottom:12px;letter-spacing:-.4px}
.cta-band p{font-size:14.5px;color:#b6cbe5;line-height:1.85;max-width:620px}
.cta-actions{position:relative;z-index:2;display:flex;flex-direction:column;gap:12px;align-items:stretch}
.cta-actions .btn-ghost{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.34);color:#fff}
.cta-actions .btn-ghost:hover{background:rgba(255,255,255,.16);border-color:rgba(255,255,255,.5)}
/* not found */
.not-found{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:56px 36px;text-align:center}
.not-found h2{font-size:22px;margin-bottom:12px;color:var(--ink)}
.not-found p{color:var(--muted);font-size:14.5px;margin-bottom:22px}
/* footer */
.site-footer{background:linear-gradient(160deg,#0b1a33,#0d2340);color:#b9cbe2;padding:56px 0 26px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:36px;padding-bottom:34px;border-bottom:1px solid rgba(255,255,255,.12)}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand b{color:#fff;font-size:16px;letter-spacing:-.3px}
.site-footer p{font-size:13.5px;line-height:1.85;color:#9fb6d2;max-width:420px}
.footer-col h4{color:#fff;font-size:14px;margin-bottom:14px;letter-spacing:.5px}
.footer-col li{margin-bottom:9px}
.footer-col a{font-size:13.5px;color:#a8bfda;transition:color .18s,padding-left .18s}
.footer-col a:hover{color:#7ff0dc;padding-left:4px}
.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;padding-top:20px;font-size:12.5px;color:#7f96b4}
/* responsive */
@media (max-width:1024px){
  .article-layout{grid-template-columns:minmax(0,1fr)}
  .article-side{position:static;flex-direction:row;flex-wrap:wrap}
  .article-side .side-card{flex:1 1 280px}
  .check-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .read-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta-band{grid-template-columns:1fr;padding:36px 32px}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:900px){
  .nav-burger{display:grid}
  .header-cta{display:none}
  .main-nav{position:fixed;left:0;right:0;top:64px;background:#fff;flex-direction:column;align-items:stretch;gap:2px;padding:12px 16px 18px;border-bottom:1px solid var(--line);box-shadow:var(--shadow-lg);display:none;max-height:calc(100vh - 64px);overflow:auto}
  .main-nav.is-open{display:flex}
  .nav-link{min-height:44px;justify-content:flex-start;font-size:15px}
  .has-mega{width:100%}
  .mega-btn{width:100%;justify-content:space-between;min-height:44px;font-size:15px}
  .mega-panel{position:static;width:100%;display:none;grid-template-columns:1fr;gap:12px;box-shadow:none;border:none;padding:8px 0 4px;opacity:1;visibility:visible;transform:none;background:transparent}
  .has-mega.is-open .mega-panel{display:grid}
  .post-head{padding:34px 0 42px}
  .post-head h1{font-size:27px}
  .article-card{padding:26px 22px 30px}
  .article-body h2{font-size:21px}
  .key-points{grid-template-columns:1fr}
}
@media (max-width:768px){
  .container{padding:0 18px}
  .section{padding:52px 0}
  .sec-title{font-size:22px}
  .read-grid{grid-template-columns:1fr}
  .check-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .article-wrap{padding:36px 0 52px}
  .cta-band{padding:30px 24px;border-radius:18px}
  .cta-band h2{font-size:22px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  body{font-size:14.5px}
  .post-head h1{font-size:23px}
  .post-lead{font-size:14.5px}
  .article-card{padding:20px 16px 24px}
  .article-body{font-size:15px}
  .article-body h2{font-size:19.5px}
  .side-card{padding:18px}
  .btn{width:100%}
  .cta-actions .btn{width:100%}
}

/* roulang page: category1 */
:root{
 --brand:#1e63ff;
 --brand-light:#4f8bff;
 --brand-2:#2fd4b6;
 --brand-deep:#0b1a33;
 --deep-2:#132c50;
 --accent:#ffb545;
 --bg:#f2f6fc;
 --surface:#ffffff;
 --ink:#0f1b2e;
 --muted:#5f7189;
 --line:#e3eaf4;
 --radius:16px;
 --radius-sm:11px;
 --shadow:0 8px 24px rgba(15,27,46,.07);
 --shadow-lg:0 20px 44px rgba(15,27,46,.14);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
 margin:0;
 font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
 font-size:15px;line-height:1.78;color:var(--ink);background:var(--bg);
 -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:3px solid rgba(30,99,255,.45);outline-offset:3px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:72px 0}
.section--alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section--tight{padding:56px 0}
.section--deep{background:linear-gradient(125deg,#0b1a33 0%,#122a4c 55%,#123a5e 100%);color:#dbe7f6}
.section--deep .sec-title{color:#fff}
.section--deep .sec-desc{color:#a9c0dc}
.sec-head{margin-bottom:36px;max-width:760px}
.sec-title{font-size:26px;line-height:1.4;display:flex;align-items:center;gap:12px;letter-spacing:-.3px}
.sec-title::before{content:"";flex:0 0 auto;width:6px;height:24px;border-radius:4px;background:linear-gradient(180deg,var(--brand-2),var(--brand))}
.sec-desc{margin-top:12px;font-size:14.5px;color:var(--muted);line-height:1.85}
.section--deep .sec-desc{color:#a9c0dc}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:90;background:rgba(255,255,255,.95);backdrop-filter:blur(14px);border-bottom:1px solid var(--line);transition:box-shadow .2s}
.site-header.is-scrolled{box-shadow:0 6px 20px rgba(15,27,46,.08)}
.header-inner{display:flex;align-items:center;gap:18px;height:64px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{width:36px;height:36px;border-radius:11px;display:grid;place-items:center;color:#fff;font-weight:800;font-size:15px;letter-spacing:-.5px;background:linear-gradient(135deg,var(--brand),var(--brand-2));box-shadow:0 8px 18px rgba(30,99,255,.32)}
.brand-text{display:flex;flex-direction:column;line-height:1.16}
.brand-text b{font-size:15.5px;font-weight:800;letter-spacing:-.4px;color:var(--ink)}
.brand-text em{font-style:normal;font-size:11px;color:var(--muted);letter-spacing:1.6px}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{display:inline-flex;align-items:center;min-height:40px;padding:0 13px;border-radius:10px;font-size:14.5px;font-weight:500;color:var(--muted);transition:color .18s,background .18s}
.nav-link:hover{color:var(--brand);background:#eef4ff}
.nav-link.active{color:var(--brand);background:#e8f0ff;font-weight:700}
.header-cta{min-height:40px;padding:0 18px;border-radius:10px;background:linear-gradient(135deg,#2f7bff,#1e63ff);color:#fff;font-size:14px;font-weight:600;display:inline-flex;align-items:center;box-shadow:0 8px 18px rgba(30,99,255,.28);transition:transform .18s,box-shadow .18s}
.header-cta:hover{transform:translateY(-2px);box-shadow:0 12px 24px rgba(30,99,255,.36)}
.has-mega{position:relative}
.mega-btn{background:none;border:none;cursor:pointer;display:inline-flex;align-items:center;gap:6px;color:var(--muted);font-size:14.5px;min-height:40px;padding:0 13px;border-radius:10px;transition:.18s}
.mega-btn:hover{color:var(--brand);background:#eef4ff}
.mega-btn .caret{width:7px;height:7px;border-right:1.6px solid currentColor;border-bottom:1.6px solid currentColor;transform:rotate(45deg) translateY(-2px);transition:transform .2s}
.has-mega:hover .caret,.has-mega.open .caret{transform:rotate(225deg) translateY(-2px)}
.mega-panel{position:absolute;right:0;top:calc(100% + 10px);width:540px;background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow-lg);padding:20px;display:grid;grid-template-columns:1fr 1fr;gap:20px;opacity:0;visibility:hidden;transform:translateY(8px);transition:opacity .2s ease,transform .2s ease,visibility .2s}
.has-mega:hover .mega-panel,.has-mega:focus-within .mega-panel,.has-mega.open .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
.mega-col h4{font-size:12px;letter-spacing:1.4px;color:var(--muted);margin-bottom:12px}
.mega-link{display:block;padding:10px 12px;border-radius:10px;font-size:14px;font-weight:600;color:var(--ink);transition:.18s}
.mega-link small{display:block;font-weight:400;font-size:12.5px;color:var(--muted);margin-top:2px}
.mega-link:hover{background:#f1f6ff;color:var(--brand)}
.nav-burger{display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);background:#fff;cursor:pointer;place-items:center;gap:4px;padding:11px 10px;margin-left:auto}
.nav-burger span{display:block;width:20px;height:2px;border-radius:2px;background:var(--ink)}

/* ---------- buttons / tags ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 22px;border-radius:10px;font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:transform .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease,color .18s ease}
.btn-primary{background:linear-gradient(135deg,#2f7bff,#1e63ff);color:#fff;box-shadow:0 10px 24px rgba(30,99,255,.34)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 32px rgba(30,99,255,.44)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.34);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.16);transform:translateY(-2px)}
.btn-outline{background:#fff;border-color:var(--line);color:var(--brand);box-shadow:var(--shadow)}
.btn-outline:hover{border-color:var(--brand-light);transform:translateY(-2px);box-shadow:0 12px 26px rgba(30,99,255,.16)}
.tag{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:99px;font-size:13px;font-weight:600}
.tag-glass{background:rgba(47,212,182,.14);border:1px solid rgba(47,212,182,.42);color:#8df3e0}
.tag-glass::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--brand-2);box-shadow:0 0 0 4px rgba(47,212,182,.18)}
.tag-soft{background:#eaf1ff;color:var(--brand);border:1px solid #d7e3ff}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;color:#fff;padding:40px 0 78px;background:linear-gradient(112deg,rgba(7,18,37,.95) 0%,rgba(10,28,58,.92) 46%,rgba(13,45,80,.84) 100%),url('/assets/images/bb37570df6ad7867.webp') center/cover no-repeat}
.hero::after{content:"";position:absolute;right:-130px;top:-150px;width:440px;height:440px;border-radius:50%;background:radial-gradient(circle,rgba(47,212,182,.28),transparent 68%);pointer-events:none}
.hero-series{position:relative;z-index:2;display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:9px;border-radius:14px;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);backdrop-filter:blur(6px);margin-bottom:34px}
.series-label{display:inline-flex;align-items:center;min-height:32px;padding:0 14px;border-radius:9px;background:linear-gradient(135deg,#2f7bff,#1e63ff);font-size:13px;font-weight:700;letter-spacing:.4px}
.hero-series a{display:inline-flex;align-items:center;min-height:32px;padding:0 14px;border-radius:9px;font-size:13.5px;color:#c9dbf4;transition:.18s}
.hero-series a:hover{background:rgba(255,255,255,.14);color:#fff}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.14fr .86fr;gap:44px;align-items:start}
.hero h1{font-size:40px;line-height:1.24;margin:18px 0 16px;color:#fff;letter-spacing:-.8px;font-weight:800}
.hero-lead{color:#c6d7f0;font-size:15.5px;line-height:1.9;max-width:620px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.hero-panel{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);border-radius:18px;padding:24px;backdrop-filter:blur(8px);box-shadow:0 20px 44px rgba(3,10,24,.34)}
.hero-panel h2{font-size:15px;font-weight:700;color:#fff;letter-spacing:.4px;margin-bottom:16px;display:flex;align-items:center;gap:9px}
.hero-panel h2::before{content:"";width:5px;height:16px;border-radius:3px;background:linear-gradient(180deg,var(--brand-2),var(--brand))}
.hero-panel li{display:flex;justify-content:space-between;gap:16px;padding:11px 0;border-bottom:1px dashed rgba(255,255,255,.16);font-size:13.8px;color:#bed2ec}
.hero-panel li:last-child{border-bottom:none;padding-bottom:0}
.hero-panel li b{color:#fff;font-weight:700;white-space:nowrap}

/* ---------- grids / cards ---------- */
.card-grid{display:grid;gap:20px}
.card-grid--4{grid-template-columns:repeat(4,1fr)}
.card-grid--3{grid-template-columns:repeat(3,1fr)}
.card-grid--2{grid-template-columns:repeat(2,1fr)}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;height:100%}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:#c9dbff}
.card-icon{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;background:#eaf1ff;color:var(--brand);margin-bottom:16px}
.card-icon svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.card h3{font-size:16.5px;font-weight:700;margin-bottom:8px;letter-spacing:-.2px}
.card p{font-size:14px;color:var(--muted);line-height:1.8}
.card-tag{display:inline-flex;align-items:center;margin-top:16px;padding:4px 11px;border-radius:99px;font-size:12px;font-weight:600;background:#f1f6ff;color:var(--brand);border:1px solid #dde8ff}
.section--deep .card{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.14);box-shadow:none}
.section--deep .card:hover{background:rgba(255,255,255,.1);border-color:rgba(47,212,182,.5);box-shadow:0 20px 44px rgba(3,10,24,.4)}
.section--deep .card h3{color:#fff}
.section--deep .card p{color:#a9c0dc}
.section--deep .card-icon{background:rgba(47,212,182,.14);color:#8df3e0}
.section--deep .card-tag{background:rgba(47,212,182,.12);border-color:rgba(47,212,182,.36);color:#8df3e0}

/* ---------- steps ---------- */
.steps-wrap{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.steps-box{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow)}
.steps-box h3{font-size:17px;font-weight:800;display:flex;align-items:center;gap:10px;margin-bottom:6px}
.steps-box h3 span{display:inline-grid;place-items:center;width:28px;height:28px;border-radius:9px;background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;font-size:12.5px;font-weight:700}
.steps-box > p{font-size:13.5px;color:var(--muted);margin-bottom:18px}
.step-list{display:grid;gap:14px}
.step-item{display:flex;gap:14px;padding:14px 16px;border-radius:12px;background:#f7faff;border:1px solid #e8f0fb;transition:.2s}
.step-item:hover{background:#eff5ff;border-color:#cfe0ff;transform:translateX(3px)}
.step-num{flex:0 0 auto;width:26px;height:26px;border-radius:50%;display:grid;place-items:center;background:#fff;border:1.5px solid var(--brand-light);color:var(--brand);font-size:12.5px;font-weight:800}
.step-item b{display:block;font-size:14.5px;margin-bottom:3px}
.step-item p{font-size:13.5px;color:var(--muted);line-height:1.75}

/* ---------- matrix ---------- */
.matrix{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.matrix-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:transform .2s,box-shadow .2s,border-color .2s;display:flex;flex-direction:column}
.matrix-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:#c9dbff}
.matrix-thumb{aspect-ratio:16/9;overflow:hidden;background:#dde7f5}
.matrix-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.matrix-card:hover .matrix-thumb img{transform:scale(1.05)}
.matrix-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.matrix-body h3{font-size:16.5px;font-weight:800}
.matrix-body p{font-size:13.8px;color:var(--muted);line-height:1.8}
.matrix-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:auto;padding-top:10px}
.chip{display:inline-flex;align-items:center;padding:4px 11px;border-radius:99px;font-size:12px;font-weight:600;background:#f1f6ff;color:var(--brand);border:1px solid #dde8ff}
.chip--mint{background:#eafbf7;color:#0e9c81;border-color:#cdf3ea}
.chip--amber{background:#fff6e6;color:#b47615;border-color:#ffe3b5}

/* ---------- split feature ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center}
.split-media{border-radius:18px;overflow:hidden;box-shadow:var(--shadow-lg);border:1px solid var(--line)}
.split-media img{width:100%;aspect-ratio:16/11;object-fit:cover}
.split-body h2{font-size:26px;line-height:1.4;letter-spacing:-.3px;display:flex;align-items:center;gap:12px}
.split-body h2::before{content:"";width:6px;height:24px;border-radius:4px;background:linear-gradient(180deg,var(--brand-2),var(--brand))}
.split-body > p{margin-top:14px;font-size:14.5px;color:var(--muted);line-height:1.9}
.check-list{margin-top:22px;display:grid;gap:12px}
.check-list li{display:flex;gap:12px;align-items:flex-start;font-size:14px;color:var(--ink);line-height:1.8}
.check-list li::before{content:"";flex:0 0 auto;width:18px;height:18px;margin-top:5px;border-radius:50%;background:#eaf1ff;border:1.5px solid var(--brand-light);position:relative}
.check-list b{color:var(--brand-deep)}

/* ---------- post list ---------- */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.post-card{display:flex;flex-direction:column;gap:10px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow);transition:transform .2s,box-shadow .2s,border-color .2s}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:#c9dbff}
.post-card h3{font-size:16px;font-weight:700;line-height:1.6;letter-spacing:-.2px}
.post-card p{font-size:13.5px;color:var(--muted);line-height:1.8}
.post-meta{display:flex;flex-wrap:wrap;gap:10px;align-items:center;font-size:12.5px;color:var(--muted);margin-top:auto;padding-top:8px}
.post-meta span{padding:3px 10px;border-radius:99px;background:#f1f6ff;color:var(--brand);font-weight:600}
.empty-tip{padding:26px 24px;border-radius:var(--radius);background:var(--surface);border:1px dashed var(--line);color:var(--muted);font-size:14px;text-align:center;grid-column:1/-1}

/* ---------- faq ---------- */
.faq-list{display:grid;gap:14px}
.faq-item{background:var(--surface);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);overflow:hidden;transition:border-color .2s,box-shadow .2s}
.faq-item[open]{border-color:#c9dbff;box-shadow:var(--shadow-lg)}
.faq-item summary{cursor:pointer;list-style:none;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:18px 22px;font-size:15.5px;font-weight:700}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";flex:0 0 auto;width:26px;height:26px;border-radius:50%;display:grid;place-items:center;background:#eaf1ff;color:var(--brand);font-size:16px;font-weight:700;line-height:1;transition:.2s}
.faq-item[open] summary::after{content:"−";background:var(--brand);color:#fff}
.faq-item .faq-body{padding:0 22px 20px;font-size:14px;color:var(--muted);line-height:1.9}

/* ---------- cta ---------- */
.cta-band{position:relative;overflow:hidden;border-radius:20px;padding:44px;background:linear-gradient(120deg,#122a4c 0%,#0b1a33 58%,#123a5e 100%);color:#fff;box-shadow:var(--shadow-lg);display:grid;grid-template-columns:1.2fr .8fr;gap:32px;align-items:center}
.cta-band::after{content:"";position:absolute;right:-90px;bottom:-140px;width:340px;height:340px;border-radius:50%;background:radial-gradient(circle,rgba(47,212,182,.28),transparent 70%)}
.cta-band h2{font-size:26px;line-height:1.35;letter-spacing:-.4px;position:relative;z-index:2}
.cta-band p{margin-top:12px;font-size:14.5px;color:#b4c9e4;line-height:1.9;position:relative;z-index:2}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end;position:relative;z-index:2}

/* ---------- footer ---------- */
.site-footer{background:#0b1a33;color:#b9cbe4;padding:56px 0 26px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:40px;padding-bottom:34px;border-bottom:1px solid rgba(255,255,255,.12)}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand b{font-size:16px;color:#fff;font-weight:800;letter-spacing:-.3px}
.site-footer p{font-size:13.5px;line-height:1.9;color:#93a9c6;max-width:420px}
.footer-col h4{font-size:13.5px;color:#fff;letter-spacing:.6px;margin-bottom:14px}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:13.5px;color:#93a9c6;transition:color .18s}
.footer-col a:hover{color:#8df3e0}
.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;padding-top:22px;font-size:12.5px;color:#7b90ad}

@media (max-width:1024px){
 .hero-grid{grid-template-columns:1fr;gap:32px}
 .hero h1{font-size:34px}
 .card-grid--4{grid-template-columns:repeat(2,1fr)}
 .matrix{grid-template-columns:repeat(2,1fr)}
 .post-grid{grid-template-columns:repeat(2,1fr)}
 .split{grid-template-columns:1fr;gap:30px}
 .steps-wrap{grid-template-columns:1fr}
 .cta-band{grid-template-columns:1fr;padding:34px}
 .cta-actions{justify-content:flex-start}
 .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
 .main-nav{display:none;position:absolute;top:64px;left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;padding:12px 20px 20px;border-bottom:1px solid var(--line);box-shadow:var(--shadow-lg);gap:6px;margin-left:0}
 .main-nav.open{display:flex}
 .nav-link{justify-content:flex-start;padding:0 14px;min-height:44px}
 .has-mega{position:static}
 .mega-panel{position:static;width:100%;opacity:1;visibility:visible;transform:none;box-shadow:none;border:none;padding:6px 0 2px;grid-template-columns:1fr;display:none;gap:14px}
 .has-mega.open .mega-panel{display:grid}
 .mega-btn{width:100%;justify-content:flex-start;min-height:44px}
 .nav-burger{display:grid}
 .header-cta{display:none}
}
@media (max-width:768px){
 .container{padding:0 18px}
 .section{padding:52px 0}
 .section--tight{padding:44px 0}
 .hero{padding:32px 0 58px}
 .hero h1{font-size:28px;letter-spacing:-.4px}
 .hero-lead{font-size:14.5px}
 .sec-title{font-size:22px}
 .sec-title::before{height:20px;width:5px}
 .split-body h2{font-size:22px}
 .cta-band h2{font-size:22px}
 .card-grid--4,.card-grid--3,.card-grid--2{grid-template-columns:1fr}
 .matrix{grid-template-columns:1fr}
 .post-grid{grid-template-columns:1fr}
 .hero-series{gap:6px;padding:8px}
}
@media (max-width:520px){
 .brand-text em{display:none}
 .hero h1{font-size:24px}
 .hero-actions{flex-direction:column;align-items:stretch}
 .hero-actions .btn{width:100%}
 .footer-grid{grid-template-columns:1fr}
 .cta-band{padding:26px 20px;border-radius:16px}
 .cta-actions{flex-direction:column;align-items:stretch}
 .cta-actions .btn{width:100%}
 .card{padding:20px}
 .steps-box{padding:20px}
}

/* roulang page: category2 */
:root{
  --brand:#1e63ff;
  --brand-light:#4f8bff;
  --brand-2:#2fd4b6;
  --brand-deep:#0b1a33;
  --deep-2:#132c50;
  --accent:#ffb545;
  --bg:#f2f6fc;
  --surface:#ffffff;
  --ink:#0f1b2e;
  --muted:#5f7189;
  --line:#e3eaf4;
  --radius:16px;
  --radius-sm:11px;
  --shadow:0 8px 24px rgba(15,27,46,.07);
  --shadow-lg:0 20px 44px rgba(15,27,46,.14);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
html body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:15px;
  line-height:1.78;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4,p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:72px 0}
.section--alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section--tight{padding:56px 0}
.section--deep{background:linear-gradient(125deg,#0b1a33 0%,#122a4c 55%,#123a5e 100%);color:#dbe7f6}
.section-head{max-width:760px;margin-bottom:34px}
.sec-title{font-size:26px;line-height:1.4;display:flex;align-items:center;gap:12px;letter-spacing:-.3px}
.sec-title::before{content:"";width:6px;height:24px;border-radius:4px;background:linear-gradient(180deg,var(--brand-2),var(--brand));flex:none}
.section--deep .sec-title{color:#fff}
.sec-desc{margin-top:12px;color:var(--muted);font-size:14.5px;line-height:1.85}
.section--deep .sec-desc{color:#a9c0dc}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:700;letter-spacing:1.4px;color:var(--brand);text-transform:uppercase}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--brand)}

/* header */
.site-header{position:sticky;top:0;z-index:90;background:rgba(255,255,255,.95);backdrop-filter:blur(14px);border-bottom:1px solid var(--line);transition:box-shadow .2s}
.site-header.is-scrolled{box-shadow:0 6px 20px rgba(15,27,46,.08)}
.header-inner{display:flex;align-items:center;gap:18px;height:64px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{width:36px;height:36px;border-radius:11px;display:grid;place-items:center;color:#fff;font-weight:800;font-size:15px;letter-spacing:-.5px;background:linear-gradient(135deg,var(--brand),var(--brand-2));box-shadow:0 8px 18px rgba(30,99,255,.32)}
.brand-text{display:flex;flex-direction:column;line-height:1.16}
.brand-text b{font-size:15.5px;font-weight:800;letter-spacing:-.4px;color:var(--ink)}
.brand-text em{font-style:normal;font-size:11px;color:var(--muted);letter-spacing:1.6px}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{display:inline-flex;align-items:center;min-height:40px;padding:0 13px;border-radius:10px;font-size:14.5px;font-weight:500;color:var(--muted);transition:color .18s,background .18s}
.nav-link:hover{color:var(--brand);background:#eef4ff}
.nav-link.active{color:var(--brand);background:#e8f0ff;font-weight:700}
.header-cta{min-height:40px;padding:0 18px;border-radius:10px;background:linear-gradient(135deg,#2f7bff,#1e63ff);color:#fff;font-size:14px;font-weight:600;display:inline-flex;align-items:center;box-shadow:0 8px 18px rgba(30,99,255,.28);transition:transform .18s,box-shadow .18s}
.header-cta:hover{transform:translateY(-2px);box-shadow:0 12px 24px rgba(30,99,255,.36)}
.has-mega{position:relative}
.mega-btn{background:none;border:none;cursor:pointer;display:inline-flex;align-items:center;gap:6px;color:var(--muted);font-size:14.5px;min-height:40px;padding:0 13px;border-radius:10px;transition:.18s}
.mega-btn:hover{color:var(--brand);background:#eef4ff}
.mega-btn .caret{width:7px;height:7px;border-right:1.6px solid currentColor;border-bottom:1.6px solid currentColor;transform:rotate(45deg) translateY(-2px);transition:transform .2s}
.has-mega:hover .caret,.has-mega:focus-within .caret{transform:rotate(225deg) translateY(-2px)}
.mega-panel{position:absolute;right:0;top:calc(100% + 10px);width:540px;background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow-lg);padding:20px;display:grid;grid-template-columns:1fr 1fr;gap:20px;opacity:0;visibility:hidden;transform:translateY(8px);transition:opacity .2s ease,transform .2s ease,visibility .2s}
.has-mega:hover .mega-panel,.has-mega:focus-within .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
.mega-col h4{font-size:12px;letter-spacing:1.4px;color:var(--muted);text-transform:uppercase;margin-bottom:12px}
.mega-link{display:block;padding:10px 12px;border-radius:10px;font-size:14px;font-weight:600;color:var(--ink);transition:.18s}
.mega-link small{display:block;font-weight:400;font-size:12.5px;color:var(--muted);margin-top:2px}
.mega-link:hover{background:#f1f6ff;color:var(--brand)}
.nav-burger{display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);background:#fff;cursor:pointer;place-items:center;gap:4px;padding:11px 10px;margin-left:auto}
.nav-burger span{display:block;width:20px;height:2px;border-radius:2px;background:var(--ink)}

/* hero */
.hero{position:relative;overflow:hidden;color:#fff;padding:60px 0 72px;background:linear-gradient(112deg,rgba(7,18,37,.95) 0%,rgba(10,28,58,.93) 46%,rgba(13,45,80,.86) 100%),url('/assets/images/b2ad5261e400fe7e.jpg') center/cover no-repeat}
.hero::after{content:"";position:absolute;right:-140px;top:-160px;width:460px;height:460px;border-radius:50%;background:radial-gradient(circle,rgba(47,212,182,.26),transparent 68%);pointer-events:none}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.1fr .9fr;gap:44px;align-items:start}
.tag{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:99px;font-size:13px;font-weight:600}
.tag-glass{background:rgba(47,212,182,.14);border:1px solid rgba(47,212,182,.42);color:#8df3e0}
.tag-glass::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--brand-2);box-shadow:0 0 0 4px rgba(47,212,182,.18)}
.hero h1{font-size:40px;line-height:1.24;margin:18px 0 16px;color:#fff;letter-spacing:-.8px;font-weight:800}
.hero-lead{color:#c6d7f0;font-size:15.5px;line-height:1.9;max-width:620px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 22px;border-radius:10px;font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;transition:transform .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease,color .18s ease}
.btn-primary{background:linear-gradient(135deg,#2f7bff,#1e63ff);color:#fff;box-shadow:0 10px 24px rgba(30,99,255,.34)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 32px rgba(30,99,255,.44)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.32);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.16);transform:translateY(-2px)}
.btn-soft{background:#eef4ff;color:var(--brand);border-color:#d8e4ff}
.btn-soft:hover{background:#e2ecff;transform:translateY(-2px)}
.btn:focus-visible,.nav-link:focus-visible,.header-cta:focus-visible,.mega-btn:focus-visible,.quick-card:focus-visible,.news-card:focus-visible{outline:3px solid rgba(47,212,182,.6);outline-offset:2px}
.hero-kpis{display:flex;flex-wrap:wrap;gap:26px;margin-top:34px;padding-top:24px;border-top:1px solid rgba(255,255,255,.14)}
.hero-kpis li span{display:block;font-size:24px;font-weight:800;color:#fff;line-height:1.2}
.hero-kpis li small{font-size:12.5px;color:#9fb8d8;letter-spacing:.4px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.pill{display:inline-flex;align-items:center;padding:5px 13px;border-radius:99px;font-size:12.5px;font-weight:600;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);color:#d7e5f8}
.hero-panel{background:rgba(255,255,255,.96);border-radius:20px;padding:22px;color:var(--ink);box-shadow:var(--shadow-lg);border:1px solid rgba(255,255,255,.6)}
.panel-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px}
.panel-head h2{font-size:16px;font-weight:800;letter-spacing:-.2px}
.panel-badge{font-size:11.5px;font-weight:700;color:var(--brand);background:#eaf1ff;border-radius:99px;padding:4px 10px}
.quick-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.quick-card{display:block;padding:14px;border-radius:13px;background:#f7faff;border:1px solid #e6eefc;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease,background .2s ease}
.quick-card:hover{transform:translateY(-3px);box-shadow:0 12px 24px rgba(30,99,255,.14);border-color:#c9dcff;background:#fff}
.quick-card b{display:block;font-size:14px;font-weight:800;margin-top:8px}
.quick-card small{display:block;font-size:12.5px;color:var(--muted);line-height:1.6;margin-top:2px}
.quick-ico{width:30px;height:30px;border-radius:9px;display:grid;place-items:center;background:linear-gradient(135deg,#e8f0ff,#e6fbf6);color:var(--brand)}
.quick-ico svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.panel-note{margin-top:16px;font-size:12.5px;color:var(--muted);line-height:1.75;padding:12px 14px;border-radius:11px;background:#f4f8ff;border:1px dashed #d8e4ff}

/* cards */
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:#cfe0f8}
.card-ico{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;background:linear-gradient(135deg,#eaf1ff,#e6fbf6);color:var(--brand);margin-bottom:14px}
.card-ico svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.card h3{font-size:16.5px;font-weight:800;letter-spacing:-.2px;margin-bottom:8px}
.card p{font-size:14px;color:var(--muted);line-height:1.8}
.card .tagline{display:inline-flex;margin-top:14px;font-size:12px;font-weight:700;color:var(--brand);background:#eef4ff;border-radius:99px;padding:4px 10px}
.card--deep{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.14);box-shadow:none;color:#dbe7f6}
.card--deep h3{color:#fff}
.card--deep p{color:#a9c0dc}
.card--deep .card-ico{background:rgba(47,212,182,.16);color:#7ff0da}
.card--deep:hover{border-color:rgba(47,212,182,.45);box-shadow:0 18px 36px rgba(3,12,28,.4)}

/* gun compare */
.gun-head{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:14px}
.gun-head h3{font-size:16px;font-weight:800;color:#fff;margin:0}
.gun-badge{font-size:11.5px;font-weight:700;color:#0b1a33;background:linear-gradient(135deg,#8df3e0,#2fd4b6);border-radius:99px;padding:3px 10px}
.stat-row{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:16px 0 12px}
.stat{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.12);border-radius:11px;padding:9px 10px}
.stat b{display:block;font-size:14px;color:#fff;font-weight:800;line-height:1.3}
.stat small{font-size:11px;color:#93aecb;letter-spacing:.3px}
.meter{height:6px;border-radius:99px;background:rgba(255,255,255,.12);overflow:hidden;margin-top:6px}
.meter i{display:block;height:100%;border-radius:99px;background:linear-gradient(90deg,#2fd4b6,#4f8bff)}
.meter-label{display:flex;justify-content:space-between;font-size:11.5px;color:#93aecb;margin-top:6px}

/* rhythm steps */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;counter-reset:step}
.step{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:24px 22px 22px;box-shadow:var(--shadow);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:#cfe0f8}
.step::before{counter-increment:step;content:"0" counter(step);position:absolute;top:-14px;left:22px;font-size:12.5px;font-weight:800;letter-spacing:1px;color:#fff;background:linear-gradient(135deg,var(--brand),var(--brand-2));border-radius:99px;padding:4px 12px;box-shadow:0 8px 16px rgba(30,99,255,.28)}
.step h3{font-size:16px;font-weight:800;margin:8px 0 6px}
.step .step-time{font-size:12.5px;font-weight:700;color:var(--brand);letter-spacing:.4px}
.step p{font-size:14px;color:var(--muted);line-height:1.8;margin-top:8px}
.step ul{margin-top:12px;display:grid;gap:7px}
.step ul li{position:relative;padding-left:16px;font-size:13.5px;color:#3c4f68;line-height:1.7}
.step ul li::before{content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:2px;background:var(--brand-2)}

/* scenes */
.scene-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.scene-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:#cfe0f8}
.scene-media{aspect-ratio:16/9;overflow:hidden;background:#dbe6f5}
.scene-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.scene-card:hover .scene-media img{transform:scale(1.04)}
.scene-body{padding:18px 20px 20px}
.scene-body h3{font-size:16px;font-weight:800;margin-bottom:6px}
.scene-body p{font-size:13.8px;color:var(--muted);line-height:1.78}
.scene-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.chip{font-size:11.8px;font-weight:600;color:#2b4a72;background:#eef4ff;border:1px solid #dbe7fb;border-radius:99px;padding:3px 10px}

/* mistakes */
.split{display:grid;grid-template-columns:.95fr 1.05fr;gap:36px;align-items:center}
.split-media{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-lg);border:1px solid var(--line);aspect-ratio:4/3;background:#dbe6f5}
.split-media img{width:100%;height:100%;object-fit:cover}
.mistake-list{display:grid;gap:12px}
.mistake{display:flex;gap:14px;padding:16px 18px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-sm);box-shadow:var(--shadow);transition:border-color .2s ease,transform .2s ease}
.mistake:hover{border-color:#ffd8a3;transform:translateY(-2px)}
.mistake .num{width:28px;height:28px;flex:none;border-radius:9px;display:grid;place-items:center;font-size:13px;font-weight:800;color:#8a5500;background:#fff3df}
.mistake h3{font-size:14.5px;font-weight:800;margin-bottom:3px}
.mistake p{font-size:13.6px;color:var(--muted);line-height:1.75}

/* news */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.news-card{display:flex;flex-direction:column;gap:10px;padding:22px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:#cfe0f8}
.news-tag{align-self:flex-start;font-size:11.5px;font-weight:700;color:var(--brand);background:#eef4ff;border-radius:99px;padding:3px 10px}
.news-card h3{font-size:15.5px;font-weight:800;line-height:1.55}
.news-card p{font-size:13.6px;color:var(--muted);line-height:1.76}
.news-time{font-size:12.5px;color:#8ea0b8;margin-top:auto}
.news-empty{padding:26px;border:1px dashed var(--line);border-radius:var(--radius);background:var(--surface);color:var(--muted);font-size:14px}

/* faq */
.faq-list{display:grid;gap:12px;max-width:900px}
.faq-item{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-sm);box-shadow:var(--shadow);overflow:hidden}
.faq-item summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:17px 20px;font-size:15px;font-weight:700;color:var(--ink);transition:background .18s,color .18s}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{background:#f6faff;color:var(--brand)}
.faq-item summary::after{content:"+";font-size:19px;font-weight:700;color:var(--brand);line-height:1;flex:none}
.faq-item[open] summary::after{content:"–"}
.faq-item[open] summary{border-bottom:1px solid var(--line);background:#f8fbff}
.faq-item p{padding:16px 20px 18px;font-size:14px;color:var(--muted);line-height:1.82}

/* cta */
.cta-band{position:relative;overflow:hidden;border-radius:22px;padding:40px;background:linear-gradient(120deg,#0d2murky 0%,#102b4f 0%,#124a6b 100%);color:#fff;box-shadow:var(--shadow-lg)}
.cta-band::after{content:"";position:absolute;right:-90px;bottom:-120px;width:320px;height:320px;border-radius:50%;background:radial-gradient(circle,rgba(47,212,182,.3),transparent 70%)}
.cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap}
.cta-band h2{font-size:24px;color:#fff;letter-spacing:-.4px;margin-bottom:8px}
.cta-band p{color:#b9cde6;font-size:14.5px;max-width:620px;line-height:1.82}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* footer */
.site-footer{background:#08182e;color:#a8bed9;padding:56px 0 26px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr .8fr .8fr;gap:40px;padding-bottom:34px;border-bottom:1px solid rgba(255,255,255,.1)}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand b{color:#fff;font-size:16px;font-weight:800;letter-spacing:-.3px}
.site-footer p{font-size:13.8px;line-height:1.85;color:#93aac6;max-width:420px}
.footer-col h4{font-size:13px;letter-spacing:1.4px;color:#fff;margin-bottom:14px;text-transform:uppercase}
.footer-col ul{display:grid;gap:9px}
.footer-col a{font-size:13.8px;color:#a8bed9;transition:color .18s,transform .18s;display:inline-block}
.footer-col a:hover{color:#7ff0da;transform:translateX(3px)}
.footer-bottom{display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;padding-top:20px;font-size:12.8px;color:#7d94b0}
.footer-bottom a{color:#7ff0da}

/* responsive */
@media (max-width:1024px){
  .header-inner{height:64px}
  .main-nav{position:fixed;left:16px;right:16px;top:74px;display:none;flex-direction:column;align-items:stretch;gap:2px;background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow-lg);padding:14px;max-height:calc(100vh - 100px);overflow:auto}
  .main-nav.is-open{display:flex}
  .nav-link{min-height:44px;font-size:15px;padding:0 14px}
  .has-mega{width:100%}
  .mega-btn{width:100%;justify-content:space-between;min-height:44px;font-size:15px;padding:0 14px}
  .mega-panel{position:static;width:100%;display:none;opacity:1;visibility:visible;transform:none;box-shadow:none;border:none;padding:4px 0 8px;grid-template-columns:1fr}
  .has-mega:hover .mega-panel,.has-mega:focus-within .mega-panel{display:grid}
  .nav-burger{display:grid}
  .header-cta{display:none}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .hero h1{font-size:34px}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-3,.news-grid,.steps{grid-template-columns:repeat(2,1fr)}
  .split{grid-template-columns:1fr;gap:26px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
}
@media (max-width:768px){
  .section{padding:56px 0}
  .container{padding:0 18px}
  .hero{padding:44px 0 54px}
  .hero h1{font-size:29px;line-height:1.3}
  .hero-lead{font-size:14.8px}
  .sec-title{font-size:22px}
  .grid-3,.grid-4,.news-grid,.steps,.grid-2{grid-template-columns:1fr}
  .quick-grid{grid-template-columns:1fr}
  .cta-band{padding:28px 22px}
  .cta-band h2{font-size:20px}
  .footer-grid{grid-template-columns:1fr}
  .hero-kpis{gap:20px}
}
@media (max-width:520px){
  .brand-text em{display:none}
  .brand-text b{font-size:14px}
  .hero h1{font-size:25px}
  .hero-actions .btn{flex:1 1 auto}
  .stat-row{grid-template-columns:1fr 1fr}
  .cta-actions .btn{width:100%}
  .footer-bottom{flex-direction:column;gap:6px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
}

/* roulang page: category3 */
:root{
 --brand:#1e63ff;
 --brand-light:#4f8bff;
 --brand-2:#2fd4b6;
 --brand-deep:#0b1a33;
 --deep-2:#132c50;
 --accent:#ffb545;
 --bg:#f2f6fc;
 --surface:#ffffff;
 --ink:#0f1b2e;
 --muted:#5f7189;
 --line:#e3eaf4;
 --radius:16px;
 --radius-sm:11px;
 --shadow:0 8px 24px rgba(15,27,46,.07);
 --shadow-lg:0 20px 44px rgba(15,27,46,.14);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:88px}
body{
 margin:0;
 font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
 font-size:15px;line-height:1.78;color:var(--ink);background:var(--bg);
 -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
:focus-visible{outline:3px solid rgba(30,99,255,.45);outline-offset:2px;border-radius:8px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:72px 0}
.section--tight{padding:56px 0}
.section--alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section--deep{background:linear-gradient(125deg,#0b1a33 0%,#122a4c 55%,#123a5e 100%);color:#dbe7f6}
.section--deep .sec-title{color:#fff}
.section--deep .sec-desc{color:#a9c0dc}
.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:34px}
.sec-title{font-size:26px;font-weight:800;margin:0;display:flex;align-items:center;gap:12px;letter-spacing:-.4px;line-height:1.35}
.sec-title::before{content:"";width:6px;height:24px;border-radius:4px;background:linear-gradient(180deg,var(--brand-2),var(--brand));flex-shrink:0}
.sec-desc{font-size:14.5px;color:var(--muted);margin:10px 0 0;max-width:760px;line-height:1.85}
/* header */
.site-header{position:sticky;top:0;z-index:90;background:rgba(255,255,255,.95);backdrop-filter:blur(14px);border-bottom:1px solid var(--line);transition:box-shadow .2s}
.site-header.is-scrolled{box-shadow:0 6px 20px rgba(15,27,46,.08)}
.header-inner{display:flex;align-items:center;gap:18px;height:64px;position:relative}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{width:36px;height:36px;border-radius:11px;display:grid;place-items:center;color:#fff;font-weight:800;font-size:15px;letter-spacing:-.5px;background:linear-gradient(135deg,var(--brand),var(--brand-2));box-shadow:0 8px 18px rgba(30,99,255,.32)}
.brand-text{display:flex;flex-direction:column;line-height:1.16}
.brand-text b{font-size:15.5px;font-weight:800;letter-spacing:-.4px;color:var(--ink)}
.brand-text em{font-style:normal;font-size:11px;color:var(--muted);letter-spacing:1.6px}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{display:inline-flex;align-items:center;min-height:40px;padding:0 13px;border-radius:10px;font-size:14.5px;font-weight:500;color:var(--muted);transition:color .18s,background .18s}
.nav-link:hover{color:var(--brand);background:#eef4ff}
.nav-link.active{color:var(--brand);background:#e8f0ff;font-weight:700}
.header-cta{min-height:40px;padding:0 18px;border-radius:10px;background:linear-gradient(135deg,#2f7bff,#1e63ff);color:#fff;font-size:14px;font-weight:600;display:inline-flex;align-items:center;box-shadow:0 8px 18px rgba(30,99,255,.28);transition:transform .18s,box-shadow .18s}
.header-cta:hover{transform:translateY(-2px);box-shadow:0 12px 24px rgba(30,99,255,.36)}
.has-mega{position:relative}
.mega-btn{display:inline-flex;align-items:center;gap:6px;color:var(--muted);font-size:14.5px;min-height:40px;padding:0 13px;border-radius:10px;transition:.18s}
.mega-btn:hover{color:var(--brand);background:#eef4ff}
.mega-btn .caret{width:7px;height:7px;border-right:1.6px solid currentColor;border-bottom:1.6px solid currentColor;transform:rotate(45deg) translateY(-2px);transition:transform .2s}
.has-mega:hover .caret{transform:rotate(225deg) translateY(-2px)}
.mega-panel{position:absolute;right:0;top:calc(100% + 10px);width:540px;background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow-lg);padding:20px;display:grid;grid-template-columns:1fr 1fr;gap:20px;opacity:0;visibility:hidden;transform:translateY(8px);transition:opacity .2s ease,transform .2s ease,visibility .2s}
.has-mega:hover .mega-panel,.has-mega:focus-within .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
.mega-col h4{font-size:12px;letter-spacing:1.4px;color:var(--muted);text-transform:uppercase;margin:0 0 12px}
.mega-link{display:block;padding:10px 12px;border-radius:10px;font-size:14px;font-weight:600;color:var(--ink);transition:.18s}
.mega-link small{display:block;font-weight:400;font-size:12.5px;color:var(--muted);margin-top:2px}
.mega-link:hover{background:#f1f6ff;color:var(--brand)}
.nav-burger{display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);background:#fff;place-items:center;gap:4px;padding:11px 10px;margin-left:auto}
.nav-burger span{display:block;width:20px;height:2px;border-radius:2px;background:var(--ink)}
/* hero bento */
.hero{position:relative;overflow:hidden;color:#fff;padding:56px 0 64px;background:linear-gradient(112deg,rgba(7,18,37,.95) 0%,rgba(10,28,58,.92) 46%,rgba(13,45,80,.86) 100%),url('/assets/images/f2817981c7225113.webp') center/cover no-repeat}
.hero::after{content:"";position:absolute;right:-130px;top:-150px;width:440px;height:440px;border-radius:50%;background:radial-gradient(circle,rgba(47,212,182,.26),transparent 68%);pointer-events:none}
.hero-bento{position:relative;z-index:2;display:grid;grid-template-columns:1.45fr .85fr;grid-template-areas:"main side" "bar bar";gap:20px}
.hero-main{grid-area:main;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);border-radius:20px;padding:34px 34px 30px;backdrop-filter:blur(8px)}
.hero-side{grid-area:side;display:grid;gap:16px}
.hero-mini{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.16);border-radius:18px;padding:20px 22px;display:flex;flex-direction:column;gap:10px}
.hero-mini h3{font-size:14.5px;font-weight:700;color:#fff;margin:0;display:flex;align-items:center;gap:8px}
.hero-mini p{font-size:13.5px;line-height:1.8;color:#b7cde8;margin:0}
.hero-cta-bar{grid-area:bar;background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.18);border-radius:18px;padding:18px 24px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px}
.hero-cta-bar p{font-size:14px;color:#d6e5f8;margin:0}
.hero-cta-bar strong{color:#fff}
.tag-glass{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:99px;font-size:13px;font-weight:600;background:rgba(47,212,182,.14);border:1px solid rgba(47,212,182,.42);color:#8df3e0}
.tag-glass::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--brand-2);box-shadow:0 0 0 4px rgba(47,212,182,.18)}
.hero-title{font-size:38px;line-height:1.24;margin:18px 0 16px;color:#fff;letter-spacing:-.8px;font-weight:800}
.hero-lead{color:#c6d7f0;font-size:15.5px;line-height:1.9;max-width:620px;margin:0}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.hero-tags .pill{display:inline-flex;align-items:center;padding:5px 13px;border-radius:99px;font-size:12.5px;font-weight:600;color:#a9e9de;background:rgba(47,212,182,.1);border:1px solid rgba(47,212,182,.3)}
/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 22px;border-radius:10px;font-size:15px;font-weight:600;border:1px solid transparent;transition:transform .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease,color .18s ease}
.btn-primary{background:linear-gradient(135deg,#2f7bff,#1e63ff);color:#fff;box-shadow:0 10px 24px rgba(30,99,255,.34)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 32px rgba(30,99,255,.44)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.32);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.16);transform:translateY(-2px)}
.btn-outline{background:#fff;border-color:#cddcf3;color:var(--brand)}
.btn-outline:hover{border-color:var(--brand);background:#f4f8ff;transform:translateY(-2px)}
.btn-sm{min-height:40px;padding:0 18px;font-size:14px}
/* cards */
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:24px;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:#c6d9f8}
.card-icon{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;background:linear-gradient(135deg,#eaf1ff,#e3f8f4);color:var(--brand);margin-bottom:16px}
.card-title{font-size:17px;font-weight:700;margin:0 0 10px;color:var(--ink);line-height:1.5}
.card-text{font-size:14.5px;color:var(--muted);margin:0 0 14px;line-height:1.82}
.card-text:last-child{margin-bottom:0}
.chip{display:inline-flex;align-items:center;gap:6px;padding:4px 11px;border-radius:99px;background:#eef4ff;color:#1e63ff;font-size:12.5px;font-weight:600}
.chip--teal{background:#e6faf6;color:#0d8f79}
.chip--amber{background:#fff4e3;color:#a86600}
.chip-row{display:flex;flex-wrap:wrap;gap:8px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
/* rhythm */
.rhythm-card{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 24px 24px;box-shadow:var(--shadow);transition:transform .2s,box-shadow .2s,border-color .2s}
.rhythm-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:#c6d9f8}
.rhythm-step{font-size:12.5px;font-weight:700;letter-spacing:1.2px;color:var(--brand-2);margin-bottom:10px;display:block}
.rhythm-card h3{font-size:17px;font-weight:700;margin:0 0 10px}
.rhythm-card p{font-size:14.5px;color:var(--muted);line-height:1.82;margin:0 0 14px}
/* split block */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:center}
.split-media{border-radius:20px;overflow:hidden;box-shadow:var(--shadow-lg);border:1px solid var(--line);position:relative}
.split-media img{width:100%;aspect-ratio:16/11;object-fit:cover}
.split-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(11,26,51,0) 55%,rgba(11,26,51,.42));pointer-events:none}
.split-badge{position:absolute;left:18px;bottom:18px;z-index:2;display:inline-flex;align-items:center;gap:8px;padding:7px 14px;border-radius:99px;background:rgba(255,255,255,.92);color:var(--brand-deep);font-size:12.5px;font-weight:700}
.check-list{list-style:none;margin:22px 0 0;padding:0;display:grid;gap:14px}
.check-list li{display:flex;gap:12px;align-items:flex-start;font-size:14.5px;color:var(--ink);line-height:1.75}
.check-list .dot{flex-shrink:0;width:22px;height:22px;border-radius:7px;background:#e6faf6;color:#0d8f79;display:grid;place-items:center;font-size:12px;font-weight:700;margin-top:3px}
.check-list b{font-weight:700}
.check-list span{color:var(--muted)}
/* compare table */
.compare-wrap{overflow-x:auto;border-radius:var(--radius);border:1px solid var(--line);background:#fff;box-shadow:var(--shadow)}
table.compare{width:100%;border-collapse:collapse;min-width:720px}
.compare thead th{background:#f5f9ff;font-size:13px;letter-spacing:.6px;color:var(--muted);text-align:left;padding:15px 20px;font-weight:700;border-bottom:1px solid var(--line);white-space:nowrap}
.compare tbody td{padding:17px 20px;border-bottom:1px solid var(--line);font-size:14.5px;color:var(--ink);line-height:1.72;vertical-align:top}
.compare tbody tr:last-child td{border-bottom:none}
.compare tbody tr:hover td{background:#f8fbff}
.compare .ver{font-weight:700;color:var(--brand-deep);white-space:nowrap}
/* voices */
.voice{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);transition:transform .2s,box-shadow .2s}
.voice:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.voice p{font-size:14.5px;line-height:1.85;color:var(--ink);margin:0 0 16px}
.voice-meta{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--muted)}
.avatar{width:34px;height:34px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;display:grid;place-items:center;font-size:13px;font-weight:700;flex-shrink:0}
.stat-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:26px}
.stat{border-radius:var(--radius-sm);border:1px solid rgba(255,255,255,.16);background:rgba(255,255,255,.07);padding:18px 20px}
.stat b{display:block;font-size:15px;color:#fff;margin-bottom:6px}
.stat span{font-size:13px;color:#a9c0dc;line-height:1.7}
/* faq */
.faq-list{display:grid;gap:12px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);box-shadow:var(--shadow);overflow:hidden;transition:border-color .2s,box-shadow .2s}
.faq-item:hover{border-color:#c6d9f8}
.faq-item summary{list-style:none;cursor:pointer;padding:18px 22px;font-weight:700;font-size:15.5px;display:flex;justify-content:space-between;gap:16px;align-items:center;color:var(--ink)}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";font-size:20px;line-height:1;color:var(--brand);transition:transform .2s;flex-shrink:0}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-body{padding:0 22px 20px;font-size:14.5px;color:var(--muted);line-height:1.85}
/* news */
.news-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:#c6d9f8}
.news-thumb{aspect-ratio:16/9;overflow:hidden;background:#eaf1fa}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.news-card:hover .news-thumb img{transform:scale(1.05)}
.news-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-title{font-size:15.5px;font-weight:700;line-height:1.55;margin:0;color:var(--ink)}
.news-card:hover .news-title{color:var(--brand)}
.news-excerpt{font-size:13.5px;color:var(--muted);margin:0;line-height:1.78;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:12.5px;color:var(--muted);margin-top:auto}
.empty-note{background:#fff;border:1px dashed #cddcf3;border-radius:var(--radius-sm);padding:28px;text-align:center;color:var(--muted);font-size:14.5px}
/* cta */
.cta-band{background:linear-gradient(120deg,#0b1a33,#123a5e 70%,#124a63);color:#fff;border-radius:22px;padding:42px 44px;display:flex;flex-wrap:wrap;gap:26px;align-items:center;justify-content:space-between;position:relative;overflow:hidden;box-shadow:var(--shadow-lg)}
.cta-band::after{content:"";position:absolute;right:-80px;bottom:-120px;width:320px;height:320px;border-radius:50%;background:radial-gradient(circle,rgba(47,212,182,.24),transparent 70%);pointer-events:none}
.cta-band h2{font-size:24px;font-weight:800;margin:0 0 10px;color:#fff;letter-spacing:-.4px}
.cta-band p{font-size:14.5px;color:#b7cde8;margin:0;max-width:600px;line-height:1.85}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;position:relative;z-index:2}
/* footer */
.site-footer{background:#0b1a33;color:#c3d3e8;padding:56px 0 24px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;color:#fff}
.footer-brand b{font-size:16px;font-weight:800}
.site-footer p{font-size:14px;line-height:1.85;color:#9db4d1;margin:0;max-width:380px}
.footer-col h4{font-size:13px;letter-spacing:1.2px;color:#8ea7c6;margin:0 0 14px;text-transform:uppercase}
.footer-col ul{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.footer-col a{font-size:14px;color:#c3d3e8;transition:color .18s}
.footer-col a:hover{color:#7fe9d6}
.footer-bottom{margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;font-size:13px;color:#8ea7c6}
/* responsive */
@media (max-width:1023px){
 .hero-bento{grid-template-columns:1fr;grid-template-areas:"main" "side" "bar"}
 .hero-title{font-size:32px}
 .split{grid-template-columns:1fr;gap:28px}
 .grid-4{grid-template-columns:repeat(2,1fr)}
 .grid-3{grid-template-columns:repeat(2,1fr)}
 .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
 .nav-burger{display:grid}
 .main-nav{position:absolute;left:0;right:0;top:calc(100% + 10px);flex-direction:column;align-items:stretch;background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow-lg);padding:12px;gap:4px;display:none}
 .main-nav.is-open{display:flex}
 .has-mega{width:100%}
 .mega-btn{width:100%;justify-content:space-between;padding:10px 13px}
 .mega-panel{position:static;width:100%;display:none;opacity:1;visibility:visible;transform:none;box-shadow:none;border:1px solid var(--line);margin-top:8px;grid-template-columns:1fr;padding:12px;gap:14px}
 .has-mega:hover .mega-panel{display:none}
 .has-mega.is-open .mega-panel{display:grid}
 .has-mega:hover .mega-panel{opacity:1;visibility:visible;transform:none}
}
@media (max-width:767px){
 .container{padding:0 18px}
 .section{padding:52px 0}
 .section--tight{padding:44px 0}
 .hero{padding:40px 0 48px}
 .hero-main{padding:26px 22px}
 .hero-title{font-size:27px;margin:14px 0 12px}
 .hero-lead{font-size:14.5px}
 .sec-title{font-size:22px}
 .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
 .stat-strip{grid-template-columns:1fr}
 .footer-grid{grid-template-columns:1fr;gap:28px}
 .cta-band{padding:30px 24px}
 .cta-band h2{font-size:21px}
 .hero-cta-bar{padding:16px 18px}
 .brand-text em{display:none}
 .header-cta{min-height:38px;padding:0 14px;font-size:13px}
}
@media (max-width:520px){
 .header-inner{gap:10px}
 .header-cta{display:none}
 .hero-actions .btn{width:100%}
 .compare tbody td,.compare thead th{padding:14px 16px}
 .footer-bottom{font-size:12.5px}
}