/* roulang page: index */
:root{
  --ink:#0e2436;
  --ink-soft:#1d3a52;
  --sea:#0b2334;
  --sea-2:#123a54;
  --teal:#11b3a5;
  --teal-dark:#0d8f85;
  --amber:#f2a03d;
  --bg:#f4f8fb;
  --bg-tint:#eaf2f8;
  --surface:#ffffff;
  --line:#e0eaf2;
  --muted:#5f7688;
  --radius:14px;
  --radius-sm:10px;
  --radius-lg:20px;
  --shadow-sm:0 2px 10px rgba(14,36,54,.06);
  --shadow-md:0 14px 32px rgba(14,36,54,.10);
  --shadow-lg:0 24px 54px rgba(9,30,46,.18);
  --wrap:1160px;
}
*{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",sans-serif;
  background:var(--bg);
  color:var(--ink);
  font-size:16px;
  line-height:1.78;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .2s ease,background .2s ease,border-color .2s ease}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
button{font-family:inherit}
:focus-visible{outline:3px solid rgba(17,179,165,.55);outline-offset:3px;border-radius:6px}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 20px}

/* ---------- buttons ---------- */
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:linear-gradient(135deg,var(--teal),var(--teal-dark));
  color:#fff;font-size:15px;font-weight:600;letter-spacing:.4px;
  padding:11px 24px;border-radius:8px;border:1px solid transparent;
  box-shadow:0 8px 18px rgba(13,143,133,.26);
  transition:transform .2s ease,box-shadow .2s ease,filter .2s ease;
}
.btn-main:hover{transform:translateY(-2px);filter:brightness(1.06);box-shadow:0 14px 26px rgba(13,143,133,.32)}
.btn-main:active{transform:translateY(0);filter:brightness(.96)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:transparent;color:var(--ink-soft);font-size:15px;font-weight:600;
  padding:10px 22px;border-radius:8px;border:1px solid rgba(14,36,54,.22);
  transition:border-color .2s ease,color .2s ease,transform .2s ease,background .2s ease;
}
.btn-ghost:hover{border-color:var(--teal);color:var(--teal-dark);transform:translateY(-2px);background:rgba(17,179,165,.06)}
.btn-light{background:#fff;color:var(--sea);box-shadow:0 10px 24px rgba(0,0,0,.18);border:1px solid #fff}
.btn-light:hover{transform:translateY(-2px);filter:none;color:var(--sea)}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(255,255,255,.95);
  backdrop-filter:saturate(180%) blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.scrolled{box-shadow:0 6px 22px rgba(14,36,54,.10)}
.nav-inner{height:64px;display:flex;align-items:center;justify-content:space-between;gap:18px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:36px;height:36px;border-radius:11px;flex:0 0 36px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,var(--sea-2),var(--teal));
  color:#fff;font-weight:700;font-size:16px;letter-spacing:0;
  box-shadow:0 6px 14px rgba(11,35,52,.22);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:16px;font-weight:700;color:var(--ink);letter-spacing:.2px}
.brand-text em{font-style:normal;font-size:11px;color:var(--muted);letter-spacing:2px}
.nav-menu{display:flex;align-items:center;gap:26px}
.nav-menu ul{display:flex;align-items:center;gap:26px}
.nav-menu ul a{
  position:relative;font-size:15px;font-weight:500;color:var(--ink-soft);padding:6px 0;
}
.nav-menu ul a::after{
  content:"";position:absolute;left:0;right:100%;bottom:0;height:2px;border-radius:2px;
  background:var(--teal);transition:right .24s ease;
}
.nav-menu ul a:hover{color:var(--teal-dark)}
.nav-menu ul a:hover::after{right:0}
.nav-menu ul a.active{color:var(--teal-dark);font-weight:700}
.nav-menu ul a.active::after{right:0}
.nav-cta{padding:9px 20px;font-size:14px}
.nav-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:10px;
  background:#fff;flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink-soft);border-radius:2px}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;background:var(--sea);color:#fff}
.hero-media{position:absolute;inset:0;z-index:0}
.hero-media img{width:100%;height:100%;object-fit:cover;opacity:.34}
.hero::before{
  content:"";position:absolute;inset:0;z-index:1;
  background:
    radial-gradient(900px 420px at 78% 12%,rgba(17,179,165,.28),transparent 62%),
    linear-gradient(112deg,rgba(8,28,43,.96) 12%,rgba(9,33,50,.86) 48%,rgba(9,33,50,.60) 100%);
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.12fr .88fr;gap:46px;padding:70px 0 76px;align-items:center}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;letter-spacing:1.4px;
  color:#bdeee8;background:rgba(17,179,165,.16);border:1px solid rgba(17,179,165,.4);
  padding:6px 14px;border-radius:999px;margin-bottom:18px;
}
.hero-tag i{width:6px;height:6px;border-radius:50%;background:var(--teal);display:block}
.hero h1{font-size:clamp(28px,3.9vw,44px);line-height:1.3;font-weight:800;letter-spacing:.4px}
.hero-sub{margin-top:14px;font-size:17px;color:#cfe6ef;font-weight:500}
.hero-copy{margin-top:16px;font-size:15.5px;line-height:1.85;color:#b9d3e0;max-width:600px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px}
.hero-actions .btn-ghost{color:#e6f4f8;border-color:rgba(255,255,255,.34)}
.hero-actions .btn-ghost:hover{color:#fff;border-color:var(--teal);background:rgba(17,179,165,.16)}
.hero-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.hero-points span{
  font-size:12.5px;color:#d7ecf2;background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.16);padding:5px 13px;border-radius:999px;
}
.slot-panel{
  background:rgba(255,255,255,.07);
  border:1px solid rgba(255,255,255,.18);
  border-radius:var(--radius-lg);
  padding:24px 22px;backdrop-filter:blur(6px);
  box-shadow:0 20px 46px rgba(0,0,0,.24);
}
.slot-panel h2{font-size:16px;font-weight:700;color:#fff;letter-spacing:.5px}
.slot-panel .slot-desc{font-size:12.5px;color:#a9c8d6;margin-top:6px;line-height:1.6}
.slot-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:16px}
.slot{
  text-align:left;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);
  color:#dceff5;border-radius:10px;padding:10px 12px;cursor:pointer;
  transition:all .2s ease;min-height:44px;
}
.slot strong{display:block;font-size:13.5px;font-weight:700;color:#fff;letter-spacing:.3px}
.slot small{display:block;font-size:11.5px;color:#9dbdcb;margin-top:2px}
.slot:hover{border-color:rgba(17,179,165,.7);background:rgba(17,179,165,.14);transform:translateY(-2px)}
.slot.is-active{border-color:var(--teal);background:rgba(17,179,165,.24);box-shadow:0 0 0 3px rgba(17,179,165,.16)}
.slot.is-active small{color:#bfeee8}
.slot-note{
  margin-top:14px;font-size:12.5px;color:#bfe6ea;line-height:1.65;
  border-top:1px dashed rgba(255,255,255,.2);padding-top:12px;min-height:44px;
}
.slot-panel .btn-main{width:100%;margin-top:14px}

/* ---------- section base ---------- */
.section{padding:72px 0}
.section--tint{background:var(--bg-tint)}
.section--white{background:var(--surface)}
.section--dark{background:var(--sea);color:#fff}
.section--dark .sec-head p{color:#b3cdda}
.sec-head{max-width:760px;margin-bottom:38px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.sec-eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:700;
  letter-spacing:2px;color:var(--teal-dark);text-transform:uppercase;margin-bottom:12px;
}
.sec-eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--teal)}
.section--dark .sec-eyebrow{color:#7fe3d8}
.sec-head h2{font-size:clamp(22px,2.7vw,30px);font-weight:800;line-height:1.4;letter-spacing:.3px}
.sec-head p{margin-top:12px;font-size:15px;color:var(--muted);line-height:1.82}
.sec-head .kw{color:var(--teal-dark);font-weight:700}
.section--dark .sec-head .kw{color:#7fe3d8}

/* ---------- metrics ---------- */
.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.metric{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:22px 20px;box-shadow:var(--shadow-sm);transition:.22s ease;
}
.metric:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#cfe4ef}
.metric b{display:block;font-size:30px;font-weight:800;color:var(--sea);line-height:1.2;letter-spacing:-.5px}
.metric b em{font-style:normal;font-size:14px;font-weight:600;color:var(--teal-dark);margin-left:4px}
.metric span{display:block;margin-top:8px;font-size:14px;color:var(--muted)}

/* ---------- pains ---------- */
.pain-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.pain{
  display:flex;gap:16px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius);padding:22px;box-shadow:var(--shadow-sm);transition:.22s ease;
}
.pain:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:#d3e6f0}
.pain-no{
  flex:0 0 40px;width:40px;height:40px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:rgba(242,160,61,.14);color:#c47c1c;font-weight:800;font-size:15px;
}
.pain h3{font-size:16.5px;font-weight:700;color:var(--ink)}
.pain p{margin-top:8px;font-size:14px;color:var(--muted);line-height:1.78}

/* ---------- solutions ---------- */
.sol-layout{display:grid;grid-template-columns:.78fr 1.22fr;gap:38px;align-items:start}
.sol-side h2{font-size:clamp(22px,2.6vw,29px);font-weight:800;line-height:1.42}
.sol-side p{margin-top:14px;font-size:14.6px;color:var(--muted);line-height:1.85}
.sol-list{display:grid;gap:16px}
.sol{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:22px 24px;box-shadow:var(--shadow-sm);transition:.22s ease;display:flex;gap:18px;
}
.sol:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:#cfe4ef}
.sol-ico{
  flex:0 0 46px;width:46px;height:46px;border-radius:13px;
  background:linear-gradient(140deg,rgba(17,179,165,.16),rgba(11,35,52,.08));
  display:flex;align-items:center;justify-content:center;color:var(--teal-dark);
}
.sol h3{font-size:16.5px;font-weight:700}
.sol p{margin-top:8px;font-size:14px;color:var(--muted);line-height:1.78}

/* ---------- channels ---------- */
.channel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.channel{
  position:relative;overflow:hidden;display:block;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-sm);transition:.24s ease;
}
.channel:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#bfddda}
.channel-fig{position:relative;aspect-ratio:16/10;overflow:hidden;background:#dce9f1}
.channel-fig img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.channel:hover .channel-fig img{transform:scale(1.05)}
.channel-fig::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(9,33,50,0) 42%,rgba(9,33,50,.62) 100%)}
.channel-body{padding:20px 22px 24px}
.channel-body h3{font-size:17px;font-weight:700;display:flex;align-items:center;gap:8px}
.channel-body h3 svg{color:var(--teal-dark)}
.channel-body p{margin-top:9px;font-size:14px;color:var(--muted);line-height:1.76}
.channel-body .more{display:inline-flex;align-items:center;gap:6px;margin-top:14px;font-size:13.5px;font-weight:700;color:var(--teal-dark)}
.channel:hover .more{color:var(--sea)}

/* ---------- scene ---------- */
.scene-layout{display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center}
.scene-fig{border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-lg);position:relative}
.scene-fig img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/11}
.scene-fig figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:38px 22px 16px;
  font-size:13px;color:#e8f4f8;background:linear-gradient(180deg,rgba(9,33,50,0),rgba(9,33,50,.86));
}
.steps{display:grid;gap:14px;margin-top:26px}
.step{display:flex;gap:14px;align-items:flex-start}
.step-dot{
  flex:0 0 30px;width:30px;height:30px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:800;color:#fff;background:linear-gradient(140deg,var(--sea-2),var(--teal));
  box-shadow:0 6px 14px rgba(13,143,133,.24);
}
.step h4{font-size:15.5px;font-weight:700}
.step p{font-size:13.8px;color:var(--muted);margin-top:4px;line-height:1.7}

/* ---------- compare ---------- */
.cmp-table{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow-sm);
}
.cmp-row{display:grid;grid-template-columns:.9fr 1.05fr 1.05fr;border-bottom:1px solid var(--line)}
.cmp-row:last-child{border-bottom:0}
.cmp-row > div{padding:18px 20px;font-size:14px;line-height:1.75}
.cmp-row.head > div{background:#eff6fa;font-weight:700;font-size:14px;color:var(--ink);letter-spacing:.3px}
.cmp-row.head .good{color:var(--teal-dark)}
.cmp-row .label{font-weight:600;color:var(--ink-soft);background:#fafdff}
.cmp-row .bad{color:#8a7d74}
.cmp-row .good{color:var(--ink-soft);background:rgba(17,179,165,.05)}
.cmp-row .good b{color:var(--teal-dark)}

/* ---------- timeline ---------- */
.tl{position:relative;padding-left:26px;margin-top:10px}
.tl::before{content:"";position:absolute;left:6px;top:6px;bottom:6px;width:2px;background:linear-gradient(180deg,var(--teal),rgba(17,179,165,.1))}
.tl-item{position:relative;padding:0 0 26px 18px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:"";position:absolute;left:-26px;top:6px;width:14px;height:14px;border-radius:50%;
  background:#fff;border:3px solid var(--teal);box-shadow:0 0 0 4px rgba(17,179,165,.12);
}
.tl-item h4{font-size:16px;font-weight:700}
.tl-item span{display:inline-block;font-size:12px;font-weight:700;letter-spacing:1px;color:var(--teal-dark);margin-bottom:6px}
.tl-item p{font-size:14px;color:var(--muted);margin-top:6px;line-height:1.78}

/* ---------- voices ---------- */
.voice-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.voice{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px 22px;box-shadow:var(--shadow-sm);position:relative;transition:.22s ease;
}
.voice:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#cfe4ef}
.voice::before{
  content:"“";position:absolute;top:6px;right:18px;font-size:52px;line-height:1;
  color:rgba(17,179,165,.18);font-family:Georgia,serif;
}
.voice p{font-size:14.2px;color:var(--ink-soft);line-height:1.82}
.voice-user{display:flex;align-items:center;gap:10px;margin-top:18px;padding-top:14px;border-top:1px dashed var(--line)}
.voice-avatar{
  width:34px;height:34px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,var(--sea-2),var(--teal));color:#fff;font-size:13px;font-weight:700;
}
.voice-user b{display:block;font-size:13.5px;font-weight:700}
.voice-user small{display:block;font-size:11.5px;color:var(--muted)}

/* ---------- news ---------- */
.news-layout{display:grid;grid-template-columns:1.45fr .55fr;gap:26px;align-items:start}
.news-list{display:grid;gap:14px}
.news-item{
  display:flex;gap:16px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius);padding:16px;box-shadow:var(--shadow-sm);transition:.22s ease;
}
.news-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:#cfe4ef}
.news-fig{flex:0 0 118px;width:118px;aspect-ratio:4/3;border-radius:var(--radius-sm);overflow:hidden;background:#dce9f1}
.news-fig img{width:100%;height:100%;object-fit:cover}
.news-body{min-width:0;display:flex;flex-direction:column;justify-content:center}
.news-body h3{font-size:15.5px;font-weight:700;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-item:hover .news-body h3{color:var(--teal-dark)}
.news-body p{margin-top:6px;font-size:13.2px;color:var(--muted);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{display:flex;gap:12px;margin-top:8px;font-size:12px;color:#8fa4b3}
.news-meta span{display:inline-flex;align-items:center;gap:5px}
.news-side{display:grid;gap:14px}
.side-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:18px 18px 20px;box-shadow:var(--shadow-sm);
}
.side-card h3{font-size:14px;font-weight:700;letter-spacing:.6px;color:var(--teal-dark);display:flex;align-items:center;gap:8px}
.side-card h3::before{content:"";width:4px;height:14px;border-radius:2px;background:var(--teal)}
.side-item{display:block;padding:12px 0;border-bottom:1px dashed var(--line);transition:.2s ease}
.side-item:last-child{border-bottom:0;padding-bottom:0}
.side-item:hover{padding-left:4px}
.side-item b{display:block;font-size:14px;font-weight:600;line-height:1.6;color:var(--ink-soft);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.side-item:hover b{color:var(--teal-dark)}
.side-item small{display:block;margin-top:5px;font-size:11.5px;color:#8fa4b3}
.empty-state{
  padding:34px 22px;text-align:center;font-size:14px;color:var(--muted);
  background:var(--surface);border:1px dashed #cbdfe9;border-radius:var(--radius);
}

/* ---------- plans ---------- */
.plan-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.plan{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 22px;box-shadow:var(--shadow-sm);transition:.24s ease;display:flex;flex-direction:column;
}
.plan:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.plan.hot{border-color:rgba(17,179,165,.5);box-shadow:0 16px 36px rgba(13,143,133,.14)}
.plan-badge{
  align-self:flex-start;font-size:11.5px;font-weight:700;letter-spacing:1px;color:var(--teal-dark);
  background:rgba(17,179,165,.12);border:1px solid rgba(17,179,165,.32);
  padding:4px 10px;border-radius:999px;margin-bottom:12px;
}
.plan h3{font-size:18px;font-weight:800}
.plan .plan-sub{font-size:13px;color:var(--muted);margin-top:6px}
.plan ul{margin:18px 0 0;display:grid;gap:10px}
.plan li{display:flex;gap:8px;font-size:13.8px;color:var(--ink-soft);line-height:1.65}
.plan li svg{flex:0 0 16px;margin-top:4px;color:var(--teal)}
.plan-foot{margin-top:22px;padding-top:16px;border-top:1px dashed var(--line);font-size:13px;color:var(--muted)}
.plan-foot b{color:var(--ink);font-size:14px}

/* ---------- guarantee ---------- */
.g-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.g-item{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
  border-radius:var(--radius);padding:22px 20px;transition:.22s ease;
}
.g-item:hover{background:rgba(255,255,255,.1);transform:translateY(-3px);border-color:rgba(17,179,165,.5)}
.g-item .g-ico{
  width:42px;height:42px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:rgba(17,179,165,.18);color:#7fe3d8;margin-bottom:14px;
}
.g-item h3{font-size:15.5px;font-weight:700;color:#fff}
.g-item p{margin-top:8px;font-size:13.5px;color:#adc8d6;line-height:1.72}

/* ---------- quick answers ---------- */
.quick-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.quick{
  background:var(--surface);border:1px solid var(--line);border-left:3px solid var(--teal);
  border-radius:var(--radius);padding:22px;box-shadow:var(--shadow-sm);transition:.22s ease;
}
.quick:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
.quick h3{font-size:15.5px;font-weight:700;color:var(--ink)}
.quick p{margin-top:9px;font-size:13.8px;color:var(--muted);line-height:1.78}

/* ---------- faq ---------- */
.faq-wrap{max-width:860px;margin:0 auto}
.accordion-item{
  border:1px solid var(--line) !important;border-radius:var(--radius) !important;
  margin-bottom:12px;overflow:hidden;background:var(--surface);box-shadow:var(--shadow-sm);
}
.accordion-button{
  font-size:15.2px;font-weight:700;color:var(--ink);background:var(--surface);
  padding:18px 22px;box-shadow:none !important;
}
.accordion-button:not(.collapsed){background:rgba(17,179,165,.07);color:var(--teal-dark)}
.accordion-button::after{width:14px;height:14px;background-size:14px}
.accordion-body{padding:6px 22px 20px;font-size:14px;color:var(--muted);line-height:1.85}

/* ---------- join form ---------- */
.join-layout{display:grid;grid-template-columns:.9fr 1.1fr;gap:38px;align-items:start}
.join-side h2{font-size:clamp(22px,2.6vw,29px);font-weight:800;line-height:1.42}
.join-side p{margin-top:14px;font-size:14.6px;color:var(--muted);line-height:1.85}
.join-side .join-fig{margin-top:22px;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-md)}
.join-side .join-fig img{width:100%;aspect-ratio:16/10;object-fit:cover}
.join-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:28px;box-shadow:var(--shadow-lg);
}
.join-card h3{font-size:17px;font-weight:800}
.join-card .join-tip{font-size:13px;color:var(--muted);margin-top:6px}
.field{margin-top:16px}
.field label{display:block;font-size:13px;font-weight:600;color:var(--ink-soft);margin-bottom:7px}
.field input,.field select,.field textarea{
  width:100%;border:1px solid var(--line);border-radius:10px;padding:11px 14px;
  font-size:14px;color:var(--ink);background:#fbfdff;transition:.2s ease;font-family:inherit;
}
.field textarea{resize:vertical;min-height:88px}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--teal);background:#fff;box-shadow:0 0 0 3px rgba(17,179,165,.14);
}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.join-card .btn-main{width:100%;margin-top:20px}
.form-tip{margin-top:12px;font-size:13px;color:var(--teal-dark);min-height:20px;opacity:0;transition:.25s ease}
.form-tip.is-on{opacity:1}
.form-note{font-size:12px;color:#93a7b5;margin-top:10px;line-height:1.7}

/* ---------- footer ---------- */
.site-footer{background:#08202f;color:#a9c4d3;padding:56px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:36px;padding-bottom:38px;border-bottom:1px solid rgba(255,255,255,.1)}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand .brand-mark{background:linear-gradient(140deg,#155a72,var(--teal))}
.footer-brand strong{color:#fff;font-size:16px;font-weight:700}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;letter-spacing:.6px;margin-bottom:16px}
.footer-col ul{display:grid;gap:10px}
.footer-col a{font-size:13.6px;color:#a9c4d3}
.footer-col a:hover{color:var(--teal)}
.footer-about p{font-size:13.6px;line-height:1.85;color:#93b1c2;margin-top:6px}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  padding:20px 0 26px;font-size:12.5px;color:#7e9aac;
}
.footer-bottom span{line-height:1.7}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .hero-inner{grid-template-columns:1fr;gap:32px;padding:56px 0 62px}
  .sol-layout{grid-template-columns:1fr;gap:28px}
  .scene-layout{grid-template-columns:1fr;gap:28px}
  .news-layout{grid-template-columns:1fr}
  .metric-grid{grid-template-columns:repeat(2,1fr)}
  .channel-grid{grid-template-columns:repeat(2,1fr)}
  .voice-grid{grid-template-columns:1fr}
  .plan-grid{grid-template-columns:1fr}
  .g-grid{grid-template-columns:repeat(2,1fr)}
  .quick-grid{grid-template-columns:1fr}
  .join-layout{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px}
}
@media (max-width:991px){
  .nav-toggle{display:flex}
  .nav-menu{
    position:absolute;left:0;right:0;top:64px;background:#fff;border-bottom:1px solid var(--line);
    flex-direction:column;align-items:stretch;gap:0;padding:10px 20px 20px;
    box-shadow:0 18px 34px rgba(14,36,54,.12);
  }
  .nav-menu ul{flex-direction:column;align-items:stretch;gap:0}
  .nav-menu ul li{border-bottom:1px dashed var(--line)}
  .nav-menu ul li:last-child{border-bottom:0}
  .nav-menu ul a{display:block;padding:13px 2px;font-size:15.5px}
  .nav-menu ul a::after{display:none}
  .nav-menu ul a.active{color:var(--teal-dark)}
  .nav-cta{margin-top:16px;width:100%;padding:12px 20px}
}
@media (min-width:992px){
  .nav-menu.collapse{display:flex !important;height:auto !important;visibility:visible !important}
}
@media (max-width:768px){
  .section{padding:54px 0}
  .pain-grid{grid-template-columns:1fr}
  .channel-grid{grid-template-columns:1fr}
  .cmp-row{grid-template-columns:1fr}
  .cmp-row > div{padding:12px 16px;border-bottom:1px dashed var(--line)}
  .cmp-row > div:last-child{border-bottom:0}
  .cmp-row .label{background:#f2f8fb;font-weight:700}
  .news-item{flex-direction:column}
  .news-fig{width:100%;flex:0 0 auto;aspect-ratio:16/9}
  .footer-grid{grid-template-columns:1fr}
  .hero h1{font-size:26px}
}
@media (max-width:520px){
  .metric-grid{grid-template-columns:1fr}
  .g-grid{grid-template-columns:1fr}
  .field-row{grid-template-columns:1fr}
  .slot-grid{grid-template-columns:1fr}
  .hero-actions .btn-main,.hero-actions .btn-ghost{width:100%}
  .brand-text strong{font-size:14.5px}
  .brand-text em{letter-spacing:1px}
}

/* roulang page: article */
:root{
 --ink:#0e2436;
 --ink-soft:#1d3a52;
 --sea:#0b2334;
 --sea-2:#123a54;
 --teal:#11b3a5;
 --teal-dark:#0d8f85;
 --amber:#f2a03d;
 --bg:#f4f8fb;
 --bg-tint:#eaf2f8;
 --surface:#ffffff;
 --line:#e0eaf2;
 --muted:#5f7688;
 --radius:14px;
 --radius-sm:10px;
 --radius-lg:20px;
 --shadow-sm:0 2px 10px rgba(14,36,54,.06);
 --shadow-md:0 14px 32px rgba(14,36,54,.10);
 --shadow-lg:0 24px 54px rgba(9,30,46,.18);
 --wrap:1160px;
}
*,*::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",sans-serif;
 background:var(--bg);
 color:var(--ink);
 font-size:16px;
 line-height:1.78;
 -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .2s ease,background .2s ease,border-color .2s ease}
button{font-family:inherit}
ul{list-style:none;margin:0;padding:0}
p{margin:0}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 20px}
::selection{background:rgba(17,179,165,.22)}

/* ---------- buttons ---------- */
.btn-main{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 background:linear-gradient(135deg,var(--teal),var(--teal-dark));
 color:#fff;font-size:15px;font-weight:600;letter-spacing:.4px;
 padding:11px 24px;border-radius:8px;border:1px solid transparent;
 box-shadow:0 8px 18px rgba(13,143,133,.26);
 transition:transform .2s ease,box-shadow .2s ease,filter .2s ease;
 cursor:pointer;
}
.btn-main:hover{transform:translateY(-2px);filter:brightness(1.06);box-shadow:0 14px 26px rgba(13,143,133,.32);color:#fff}
.btn-main:active{transform:translateY(0);filter:brightness(.96)}
.btn-main:focus-visible{outline:3px solid rgba(17,179,165,.42);outline-offset:3px}
.btn-ghost{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 background:transparent;color:var(--ink-soft);font-size:15px;font-weight:600;
 padding:10px 22px;border-radius:8px;border:1px solid rgba(14,36,54,.22);
 transition:border-color .2s ease,color .2s ease,transform .2s ease,background .2s ease;
 cursor:pointer;
}
.btn-ghost:hover{border-color:var(--teal);color:var(--teal-dark);transform:translateY(-2px);background:rgba(17,179,165,.06)}
.btn-ghost:focus-visible{outline:3px solid rgba(17,179,165,.32);outline-offset:3px}

/* ---------- header ---------- */
.site-header{
 position:sticky;top:0;z-index:1030;
 background:rgba(255,255,255,.95);
 backdrop-filter:saturate(180%) blur(10px);
 border-bottom:1px solid var(--line);
 transition:box-shadow .25s ease;
}
.site-header.scrolled{box-shadow:0 6px 22px rgba(14,36,54,.10)}
.nav-inner{height:64px;display:flex;align-items:center;justify-content:space-between;gap:18px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
 width:36px;height:36px;border-radius:11px;flex:0 0 36px;
 display:flex;align-items:center;justify-content:center;
 background:linear-gradient(140deg,var(--sea-2),var(--teal));
 color:#fff;font-weight:700;font-size:16px;letter-spacing:0;
 box-shadow:0 6px 14px rgba(11,35,52,.22);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:16px;font-weight:700;color:var(--ink);letter-spacing:.2px}
.brand-text em{font-style:normal;font-size:11px;color:var(--muted);letter-spacing:2px}
.nav-menu{display:flex;align-items:center;gap:26px}
.nav-menu ul{display:flex;align-items:center;gap:26px}
.nav-menu ul a{
 position:relative;font-size:15px;font-weight:500;color:var(--ink-soft);padding:6px 0;
}
.nav-menu ul a::after{
 content:"";position:absolute;left:0;right:100%;bottom:0;height:2px;border-radius:2px;
 background:var(--teal);transition:right .24s ease;
}
.nav-menu ul a:hover{color:var(--teal-dark)}
.nav-menu ul a:hover::after{right:0}
.nav-menu ul a.active{color:var(--teal-dark);font-weight:700}
.nav-menu ul a.active::after{right:0}
.nav-cta{padding:9px 20px;font-size:14px}
.nav-toggle{
 display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:10px;
 background:#fff;flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink-soft);border-radius:2px}

/* ---------- article hero ---------- */
.article-hero{
 background:
 radial-gradient(760px 320px at 88% 0%,rgba(17,179,165,.12),transparent 62%),
 linear-gradient(180deg,#f7fbfd 0%,var(--bg-tint) 100%);
 border-bottom:1px solid var(--line);
 padding:44px 0 52px;
}
.ah-grid{display:grid;grid-template-columns:1.18fr .82fr;gap:44px;align-items:start}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:18px}
.crumbs a{color:var(--ink-soft);font-weight:500}
.crumbs a:hover{color:var(--teal-dark)}
.crumbs i{font-style:normal;color:#b6c9d8}
.crumbs span{color:var(--muted)}
.chip-cat{
 display:inline-flex;align-items:center;gap:7px;
 font-size:12.5px;font-weight:700;letter-spacing:1.2px;
 color:var(--teal-dark);background:rgba(17,179,165,.12);
 border:1px solid rgba(17,179,165,.32);
 padding:5px 13px;border-radius:999px;margin-bottom:16px;
}
.ah-title{
 font-size:clamp(26px,3.1vw,38px);
 line-height:1.34;font-weight:800;letter-spacing:.3px;color:var(--ink);
}
.ah-lead{
 margin-top:16px;font-size:15.6px;line-height:1.9;color:var(--ink-soft);
 background:rgba(255,255,255,.72);border:1px solid var(--line);
 border-left:3px solid var(--teal);
 border-radius:0 var(--radius-sm) var(--radius-sm) 0;
 padding:14px 18px;
}
.ah-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.ah-meta span{
 display:inline-flex;align-items:center;gap:7px;
 font-size:12.8px;color:var(--ink-soft);background:#fff;
 border:1px solid var(--line);border-radius:999px;padding:5px 13px;
 box-shadow:var(--shadow-sm);
}
.ah-meta span b{color:var(--teal-dark);font-weight:700}
.ah-side{position:relative}
.cover-card{
 background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
 box-shadow:var(--shadow-md);overflow:hidden;
}
.cover-card img{width:100%;aspect-ratio:16/10;object-fit:cover}
.cover-card .cover-body{padding:16px 18px 18px}
.cover-card h3{font-size:15px;font-weight:700;color:var(--ink);margin:0 0 6px}
.cover-card p{font-size:13.4px;line-height:1.8;color:var(--muted)}

/* ---------- section base ---------- */
.section{padding:68px 0}
.section--tint{background:var(--bg-tint)}
.section--white{background:var(--surface)}
.section--dark{background:var(--sea);color:#fff}
.sec-eyebrow{
 display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:700;
 letter-spacing:2px;color:var(--teal-dark);text-transform:uppercase;margin-bottom:12px;
}
.sec-eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--teal)}
.sec-head{max-width:720px;margin-bottom:34px}
.sec-head h2{font-size:clamp(22px,2.4vw,29px);font-weight:800;line-height:1.4;color:var(--ink);margin:0}
.sec-head p{margin-top:12px;font-size:15.2px;line-height:1.85;color:var(--muted)}
.section--dark .sec-head h2{color:#fff}
.section--dark .sec-head p{color:#b3cdda}
.section--dark .sec-eyebrow{color:#7fe3d8}

/* ---------- article body ---------- */
.article-shell{
 max-width:900px;margin:0 auto;
 background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
 box-shadow:var(--shadow-sm);
 padding:34px 38px 40px;
}
.prose{font-size:16.4px;line-height:1.92;color:var(--ink-soft);word-break:break-word}
.prose h2{
 font-size:23px;font-weight:700;color:var(--ink);
 margin:34px 0 14px;padding-left:14px;border-left:4px solid var(--teal);line-height:1.5;
}
.prose h3{font-size:18.5px;font-weight:700;color:var(--ink);margin:26px 0 10px}
.prose h4{font-size:16.5px;font-weight:700;color:var(--ink);margin:22px 0 8px}
.prose p{margin:0 0 16px}
.prose ul,.prose ol{margin:0 0 18px;padding-left:22px}
.prose ul{list-style:disc}
.prose ol{list-style:decimal}
.prose li{margin-bottom:8px}
.prose img{border-radius:12px;margin:22px auto;box-shadow:var(--shadow-sm)}
.prose a{color:var(--teal-dark);text-decoration:underline;text-underline-offset:3px}
.prose a:hover{color:var(--teal)}
.prose blockquote{
 margin:22px 0;padding:16px 20px;background:var(--bg-tint);
 border-left:4px solid var(--teal);border-radius:0 10px 10px 0;color:var(--ink-soft);
}
.prose blockquote p:last-child{margin-bottom:0}
.prose table{width:100%;border-collapse:collapse;margin:20px 0;font-size:15px;background:#fff}
.prose th,.prose td{border:1px solid var(--line);padding:10px 13px;text-align:left;vertical-align:top}
.prose th{background:var(--bg-tint);font-weight:600;color:var(--ink)}
.prose hr{border:0;border-top:1px solid var(--line);margin:28px 0}
.prose strong{color:var(--ink);font-weight:700}
.empty-state{text-align:center;padding:34px 10px 10px}
.empty-state h2{font-size:22px;font-weight:800;color:var(--ink);margin:0 0 10px}
.empty-state p{color:var(--muted);font-size:15px;margin-bottom:22px}

/* ---------- spec ---------- */
.spec-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.spec-item{
 background:#fff;border:1px solid var(--line);border-radius:var(--radius);
 padding:20px 20px 18px;box-shadow:var(--shadow-sm);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.spec-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:rgba(17,179,165,.42)}
.spec-item .spec-label{font-size:12.6px;letter-spacing:1.4px;color:var(--muted);font-weight:600}
.spec-item .spec-value{font-size:20px;font-weight:800;color:var(--ink);margin-top:8px;line-height:1.4}
.spec-item .spec-value em{font-style:normal;color:var(--teal-dark)}
.spec-item .spec-desc{font-size:13.4px;line-height:1.8;color:var(--muted);margin-top:8px}

/* ---------- tier cards ---------- */
.tier-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.tier-card{
 background:#fff;border:1px solid var(--line);border-radius:var(--radius);
 padding:22px 20px;box-shadow:var(--shadow-sm);position:relative;overflow:hidden;
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.tier-card::before{
 content:"";position:absolute;left:0;top:0;height:3px;width:100%;
 background:linear-gradient(90deg,var(--teal),rgba(17,179,165,0));
 opacity:.55;transition:opacity .2s ease;
}
.tier-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:rgba(17,179,165,.42)}
.tier-card:hover::before{opacity:1}
.tier-card .tier-tag{
 display:inline-flex;align-items:center;justify-content:center;
 width:34px;height:34px;border-radius:10px;
 background:rgba(17,179,165,.12);color:var(--teal-dark);
 font-weight:800;font-size:15px;margin-bottom:12px;
}
.tier-card h3{font-size:16.5px;font-weight:700;color:var(--ink);margin:0 0 8px}
.tier-card p{font-size:14px;line-height:1.82;color:var(--muted)}
.tier-card .tier-meta{
 display:inline-block;margin-top:12px;font-size:12.4px;font-weight:600;
 color:var(--sea-2);background:var(--bg-tint);border-radius:999px;padding:4px 11px;
}

/* ---------- gallery ---------- */
.gallery-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.gallery-card{
 margin:0;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
 overflow:hidden;box-shadow:var(--shadow-sm);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.gallery-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:rgba(17,179,165,.42)}
.gallery-card img{width:100%;aspect-ratio:16/11;object-fit:cover}
.gallery-card figcaption{padding:14px 16px 16px;font-size:13.6px;line-height:1.78;color:var(--muted)}
.gallery-card figcaption strong{display:block;font-size:15px;color:var(--ink);margin-bottom:5px;font-weight:700}

/* ---------- post list ---------- */
.post-list{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.post-item{
 display:flex;gap:14px;align-items:flex-start;
 background:#fff;border:1px solid var(--line);border-radius:var(--radius);
 padding:16px 18px;box-shadow:var(--shadow-sm);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.post-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:rgba(17,179,165,.42)}
.post-item .pi-dot{
 flex:0 0 34px;width:34px;height:34px;border-radius:10px;
 background:linear-gradient(140deg,var(--sea-2),var(--teal));
 color:#fff;font-size:13px;font-weight:700;
 display:flex;align-items:center;justify-content:center;
}
.post-item .pi-body h3{font-size:15.4px;font-weight:700;color:var(--ink);margin:0 0 6px;line-height:1.5}
.post-item .pi-body p{font-size:13.2px;line-height:1.75;color:var(--muted)}
.post-more{margin-top:24px}

/* ---------- faq ---------- */
.faq-list{display:grid;gap:12px;max-width:900px}
.faq-item{
 background:#fff;border:1px solid var(--line);border-radius:var(--radius);
 box-shadow:var(--shadow-sm);overflow:hidden;
}
.faq-item summary{
 cursor:pointer;list-style:none;
 padding:17px 20px;font-size:15.6px;font-weight:700;color:var(--ink);
 display:flex;align-items:center;justify-content:space-between;gap:14px;
 transition:color .2s ease,background .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
 content:"+";font-size:19px;font-weight:600;color:var(--teal-dark);
 line-height:1;flex:0 0 auto;transition:transform .2s ease;
}
.faq-item[open] summary{color:var(--teal-dark);background:rgba(17,179,165,.05)}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item summary:hover{color:var(--teal-dark)}
.faq-item summary:focus-visible{outline:3px solid rgba(17,179,165,.34);outline-offset:-3px}
.faq-item .faq-answer{padding:0 20px 18px;font-size:14.8px;line-height:1.9;color:var(--ink-soft)}

/* ---------- cta ---------- */
.cta-band{display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center}
.cta-copy h2{font-size:clamp(22px,2.5vw,30px);font-weight:800;line-height:1.42;margin:0 0 12px;color:#fff}
.cta-copy p{font-size:15.2px;line-height:1.9;color:#b3cdda;max-width:520px}
.cta-copy .cta-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.cta-copy .cta-points span{
 font-size:12.6px;color:#d7ecf2;background:rgba(255,255,255,.08);
 border:1px solid rgba(255,255,255,.16);padding:5px 13px;border-radius:999px;
}
.cta-form{
 background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);
 border-radius:var(--radius-lg);padding:26px 24px;backdrop-filter:blur(4px);
}
.cta-form label{display:block;font-size:13px;font-weight:600;letter-spacing:1px;color:#cfe6ef;margin-bottom:8px}
.cta-form input{
 width:100%;height:46px;padding:0 16px;border-radius:10px;
 border:1px solid rgba(255,255,255,.22);background:rgba(255,255,255,.94);
 color:var(--ink);font-size:15px;outline:none;
 transition:border-color .2s ease,box-shadow .2s ease;
}
.cta-form input::placeholder{color:#8aa2b3}
.cta-form input:focus{border-color:var(--teal);box-shadow:0 0 0 3px rgba(17,179,165,.26)}
.cta-form .btn-main{width:100%;margin-top:14px}
.form-note{font-size:12.6px;line-height:1.7;color:#9fbccb;margin-top:12px}
.form-note.ok{color:#7fe3d8;font-weight:600}

/* ---------- footer ---------- */
.site-footer{background:var(--sea);color:#c6dbe6;padding:56px 0 0;border-top:1px solid rgba(255,255,255,.06)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:40px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand strong{font-size:16px;color:#fff;font-weight:700}
.footer-about p{font-size:13.8px;line-height:1.9;color:#9fbccb;max-width:330px}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;margin:0 0 14px;letter-spacing:.6px}
.footer-col ul li{margin-bottom:9px}
.footer-col ul a{font-size:13.8px;color:#a9c4d3;transition:color .2s ease,padding-left .2s ease}
.footer-col ul a:hover{color:var(--teal);padding-left:3px}
.footer-bottom{
 border-top:1px solid rgba(255,255,255,.10);
 display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;
 padding:18px 0 22px;font-size:13px;color:#8aa7b8;
}

/* ---------- responsive ---------- */
@media (min-width:992px){
 .nav-menu.collapse{display:flex !important}
}
@media (max-width:1024px){
 .ah-grid{grid-template-columns:1fr;gap:30px}
 .spec-grid{grid-template-columns:repeat(2,1fr)}
 .tier-grid{grid-template-columns:repeat(2,1fr)}
 .gallery-grid{grid-template-columns:repeat(2,1fr)}
 .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
 .cta-band{grid-template-columns:1fr;gap:28px}
}
@media (max-width:991.98px){
 .nav-toggle{display:flex}
 .nav-menu{
  position:absolute;left:0;right:0;top:64px;
  background:#fff;border-bottom:1px solid var(--line);
  box-shadow:var(--shadow-md);
  padding:14px 20px 20px;
  flex-direction:column;align-items:stretch;gap:12px;
 }
 .nav-menu ul{flex-direction:column;align-items:stretch;gap:2px}
 .nav-menu ul a{display:block;padding:11px 6px;border-radius:8px}
 .nav-menu ul a::after{display:none}
 .nav-menu ul a.active{background:rgba(17,179,165,.08)}
 .nav-cta{width:100%;margin-top:6px}
}
@media (max-width:768px){
 .section{padding:52px 0}
 .article-hero{padding:32px 0 40px}
 .article-shell{padding:24px 20px 28px;border-radius:var(--radius)}
 .prose{font-size:15.8px;line-height:1.88}
 .prose h2{font-size:20px}
 .post-list{grid-template-columns:1fr}
 .spec-grid{grid-template-columns:1fr}
 .tier-grid{grid-template-columns:1fr}
 .gallery-grid{grid-template-columns:1fr}
 .footer-grid{grid-template-columns:1fr;gap:26px}
 .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
 .ah-title{font-size:24px}
 .ah-lead{font-size:14.6px;padding:12px 14px}
 .btn-main,.btn-ghost{padding:10px 18px;font-size:14.4px}
 .cover-card .cover-body{padding:14px}
 .cta-form{padding:20px 18px}
}

/* roulang page: category1 */
:root{
 --ink:#0e2436;
 --ink-soft:#1d3a52;
 --sea:#0b2334;
 --sea-2:#123a54;
 --teal:#11b3a5;
 --teal-dark:#0d8f85;
 --amber:#f2a03d;
 --bg:#f4f8fb;
 --bg-tint:#eaf2f8;
 --surface:#ffffff;
 --line:#e0eaf2;
 --muted:#5f7688;
 --radius:14px;
 --radius-sm:10px;
 --radius-lg:20px;
 --shadow-sm:0 2px 10px rgba(14,36,54,.06);
 --shadow-md:0 14px 32px rgba(14,36,54,.10);
 --shadow-lg:0 24px 54px rgba(9,30,46,.18);
 --wrap:1160px;
}
*,*::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",sans-serif;
 background:var(--bg);
 color:var(--ink);
 font-size:16px;
 line-height:1.78;
 -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .2s ease,background .2s ease,border-color .2s ease,transform .2s ease}
button,input{font-family:inherit}
ul{list-style:none;margin:0;padding:0}
h1,h2,h3,h4{margin:0;line-height:1.34;font-weight:800;letter-spacing:.2px}
p{margin:0}
a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid rgba(17,179,165,.5);outline-offset:2px}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 20px;width:100%}

/* ---------- 按钮 ---------- */
.btn-main{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 background:linear-gradient(135deg,var(--teal),var(--teal-dark));
 color:#fff;font-size:15px;font-weight:600;letter-spacing:.4px;
 padding:11px 24px;border-radius:8px;border:1px solid transparent;
 box-shadow:0 8px 18px rgba(13,143,133,.26);
 transition:transform .2s ease,box-shadow .2s ease,filter .2s ease;
}
.btn-main:hover{transform:translateY(-2px);filter:brightness(1.06);box-shadow:0 14px 26px rgba(13,143,133,.32)}
.btn-main:active{transform:translateY(0);filter:brightness(.96)}
.btn-ghost{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 background:transparent;color:var(--ink-soft);font-size:15px;font-weight:600;
 padding:10px 22px;border-radius:8px;border:1px solid rgba(14,36,54,.22);
 transition:border-color .2s ease,color .2s ease,transform .2s ease,background .2s ease;
}
.btn-ghost:hover{border-color:var(--teal);color:var(--teal-dark);transform:translateY(-2px);background:rgba(17,179,165,.06)}
.btn-light{background:#fff;color:var(--sea);box-shadow:0 10px 24px rgba(0,0,0,.18);border:1px solid #fff}
.btn-light:hover{transform:translateY(-2px);filter:none;color:var(--sea)}

/* ---------- 头部导航 ---------- */
.site-header{
 position:sticky;top:0;z-index:1030;
 background:rgba(255,255,255,.95);
 backdrop-filter:saturate(180%) blur(10px);
 border-bottom:1px solid var(--line);
 transition:box-shadow .25s ease;
}
.site-header.scrolled{box-shadow:0 6px 22px rgba(14,36,54,.10)}
.nav-inner{height:64px;display:flex;align-items:center;justify-content:space-between;gap:18px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
 width:36px;height:36px;border-radius:11px;flex:0 0 36px;
 display:flex;align-items:center;justify-content:center;
 background:linear-gradient(140deg,var(--sea-2),var(--teal));
 color:#fff;font-weight:700;font-size:16px;
 box-shadow:0 6px 14px rgba(11,35,52,.22);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:16px;font-weight:700;color:var(--ink);letter-spacing:.2px}
.brand-text em{font-style:normal;font-size:11px;color:var(--muted);letter-spacing:2px}
.nav-menu{display:flex;align-items:center;gap:26px}
.nav-menu ul{display:flex;align-items:center;gap:26px}
.nav-menu ul a{position:relative;font-size:15px;font-weight:500;color:var(--ink-soft);padding:6px 0}
.nav-menu ul a::after{
 content:"";position:absolute;left:0;right:100%;bottom:0;height:2px;border-radius:2px;
 background:var(--teal);transition:right .24s ease;
}
.nav-menu ul a:hover{color:var(--teal-dark)}
.nav-menu ul a:hover::after{right:0}
.nav-menu ul a.active{color:var(--teal-dark);font-weight:700}
.nav-menu ul a.active::after{right:0}
.nav-cta{padding:9px 20px;font-size:14px}
.nav-toggle{
 display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:10px;
 background:#fff;flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink-soft);border-radius:2px}

/* ---------- 首屏 ---------- */
.cg-hero{position:relative;overflow:hidden;background:var(--sea);color:#fff;padding:62px 0 68px}
.cg-hero-bg{position:absolute;inset:0;z-index:0}
.cg-hero-bg img{width:100%;height:100%;object-fit:cover;opacity:.30}
.cg-hero::before{
 content:"";position:absolute;inset:0;z-index:1;
 background:
 radial-gradient(780px 380px at 84% 6%,rgba(17,179,165,.30),transparent 62%),
 linear-gradient(108deg,rgba(8,28,43,.96) 10%,rgba(9,33,50,.88) 50%,rgba(9,33,50,.62) 100%);
}
.cg-hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.13fr .87fr;gap:44px;align-items:center}
.hero-tag{
 display:inline-flex;align-items:center;gap:8px;font-size:12.5px;letter-spacing:1.4px;
 color:#bdeee8;background:rgba(17,179,165,.16);border:1px solid rgba(17,179,165,.4);
 padding:6px 14px;border-radius:999px;margin-bottom:18px;
}
.hero-tag i{width:6px;height:6px;border-radius:50%;background:var(--teal);display:block}
.cg-hero h1{font-size:clamp(27px,3.6vw,41px);line-height:1.32;color:#fff}
.cg-hero-sub{margin-top:14px;font-size:16.5px;color:#cfe6ef;font-weight:500;line-height:1.72}
.cg-hero-text{margin-top:14px;font-size:15px;line-height:1.85;color:#b3cfdd;max-width:590px}
.check-row{display:flex;flex-wrap:wrap;gap:10px 18px;margin-top:22px}
.check-row li{
 display:flex;align-items:center;gap:8px;font-size:13.6px;color:#dceff4;
}
.check-row li::before{
 content:"";width:16px;height:16px;flex:0 0 16px;border-radius:50%;
 background:var(--teal) url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23ffffff' stroke-width='4.2' stroke-linecap='round' stroke-linejoin='round'><path d='M4 12.5l5.5 5.5L20 6.5'/></svg>") center/10px 10px no-repeat;
}
.cg-hero .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.cg-hero .btn-ghost{color:#e6f4f8;border-color:rgba(255,255,255,.34)}
.cg-hero .btn-ghost:hover{color:#fff;border-color:var(--teal);background:rgba(17,179,165,.16)}

/* 炮台档位面板 */
.cg-panel{
 background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.16);
 border-radius:var(--radius-lg);padding:22px;backdrop-filter:blur(6px);
 box-shadow:0 18px 40px rgba(4,18,28,.30);
}
.cg-panel-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.cg-panel-head h2{font-size:15px;color:#fff;letter-spacing:.5px}
.cg-panel-head span{font-size:11.5px;color:#8fd9d0;letter-spacing:1.2px}
.cg-tier{display:flex;align-items:center;gap:12px;padding:11px 0;border-top:1px solid rgba(255,255,255,.12)}
.cg-tier:first-of-type{border-top:0}
.cg-tier-badge{
 width:34px;height:34px;flex:0 0 34px;border-radius:10px;display:flex;align-items:center;justify-content:center;
 font-size:13px;font-weight:700;color:#08222f;background:linear-gradient(140deg,#7fe3d8,var(--teal));
}
.cg-tier-text{display:flex;flex-direction:column;gap:2px}
.cg-tier-text strong{font-size:14.4px;color:#f2fbfd;font-weight:600}
.cg-tier-text em{font-style:normal;font-size:12.6px;color:#a9cad8;line-height:1.5}

/* ---------- 板块通用 ---------- */
.section{padding:70px 0}
.section--tint{background:var(--bg-tint)}
.section--white{background:var(--surface)}
.section--dark{background:var(--sea);color:#fff}
.sec-head{max-width:760px;margin-bottom:34px}
.sec-head--center{margin-left:auto;margin-right:auto;text-align:center}
.sec-eyebrow{
 display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:700;
 letter-spacing:2px;color:var(--teal-dark);margin-bottom:12px;
}
.sec-eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--teal)}
.section--dark .sec-eyebrow{color:#7fe3d8}
.sec-title{font-size:clamp(22px,2.6vw,30px);color:var(--ink)}
.section--dark .sec-title{color:#fff}
.sec-desc{margin-top:12px;font-size:15.2px;line-height:1.85;color:var(--muted)}
.section--dark .sec-desc{color:#b3cdda}
.kw{color:var(--teal-dark);font-weight:700}
.section--dark .kw{color:#7fe3d8}

/* ---------- 指标看板 ---------- */
.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.metric-card{
 background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
 padding:24px 22px;box-shadow:var(--shadow-sm);
 transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.metric-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#c7e2e0}
.metric-num{
 font-size:34px;font-weight:800;line-height:1.1;letter-spacing:-.5px;
 color:var(--sea-2);display:flex;align-items:baseline;gap:6px;
}
.metric-num small{font-size:14px;font-weight:600;color:var(--teal-dark);letter-spacing:0}
.metric-card h3{margin-top:10px;font-size:15.5px;color:var(--ink)}
.metric-card p{margin-top:8px;font-size:13.8px;line-height:1.78;color:var(--muted)}

/* ---------- 规则矩阵卡片 ---------- */
.rule-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.rule-card{
 background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
 overflow:hidden;box-shadow:var(--shadow-sm);display:flex;flex-direction:column;
 transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.rule-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#c7e2e0}
.rule-card-media{aspect-ratio:16/7;overflow:hidden;background:var(--bg-tint)}
.rule-card-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.rule-card:hover .rule-card-media img{transform:scale(1.04)}
.rule-card-body{padding:22px 22px 24px}
.rule-card-body h3{font-size:18px;color:var(--ink)}
.rule-card-body p{margin-top:10px;font-size:14.4px;line-height:1.8;color:var(--muted)}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.tag{
 font-size:12.2px;color:var(--teal-dark);background:rgba(17,179,165,.10);
 border:1px solid rgba(17,179,165,.24);padding:4px 11px;border-radius:999px;letter-spacing:.3px;
}
.tag--amber{color:#a56715;background:rgba(242,160,61,.13);border-color:rgba(242,160,61,.32)}

/* ---------- 打法对比 ---------- */
.vs-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px;position:relative}
.vs-card{
 background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
 padding:26px 24px;box-shadow:var(--shadow-sm);
 transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.vs-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#c7e2e0}
.vs-card--alt{border-color:rgba(17,179,165,.34);background:linear-gradient(180deg,rgba(17,179,165,.06),#fff 42%)}
.vs-card h3{font-size:19px;color:var(--ink);display:flex;align-items:center;gap:10px}
.vs-dot{width:9px;height:9px;border-radius:50%;background:var(--teal);display:block;flex:0 0 9px}
.vs-dot--amber{background:var(--amber)}
.vs-card > p{margin-top:10px;font-size:14.2px;line-height:1.8;color:var(--muted)}
.vs-list{margin-top:18px;border-top:1px solid var(--line)}
.vs-list div{display:flex;justify-content:space-between;gap:14px;padding:11px 0;border-bottom:1px solid var(--line)}
.vs-list div:last-child{border-bottom:0}
.vs-list dt{font-size:13.6px;color:var(--muted);flex:0 0 auto}
.vs-list dd{margin:0;font-size:13.8px;color:var(--ink-soft);font-weight:600;text-align:right}

/* ---------- 一局流程 ---------- */
.flow{display:grid;grid-template-columns:repeat(5,1fr);gap:16px;counter-reset:flow}
.flow-item{
 position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
 padding:24px 18px 22px;box-shadow:var(--shadow-sm);
 transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.flow-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#c7e2e0}
.flow-item::before{
 counter-increment:flow;content:counter(flow,decimal-leading-zero);
 display:block;font-size:12.5px;font-weight:800;letter-spacing:2px;color:var(--teal);
 margin-bottom:10px;
}
.flow-item h3{font-size:15.8px;color:var(--ink)}
.flow-item p{margin-top:8px;font-size:13.6px;line-height:1.76;color:var(--muted)}

/* ---------- 最新笔记（CMS） ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.news-card{
 background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
 box-shadow:var(--shadow-sm);overflow:hidden;
 transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#c7e2e0}
.news-card-link{display:block;padding:22px}
.news-tag{
 display:inline-block;font-size:12px;color:var(--teal-dark);
 background:rgba(17,179,165,.10);border:1px solid rgba(17,179,165,.24);
 padding:3px 10px;border-radius:999px;margin-bottom:12px;
}
.news-card h3{font-size:16.4px;color:var(--ink);line-height:1.55}
.news-card:hover h3{color:var(--teal-dark)}
.news-card p{margin-top:10px;font-size:13.8px;line-height:1.78;color:var(--muted)}
.news-meta{display:block;margin-top:14px;font-size:12.6px;color:#8aa1b1;letter-spacing:.4px}
.empty-note{
 font-size:14.4px;color:var(--muted);background:var(--surface);
 border:1px dashed var(--line);border-radius:var(--radius);padding:24px;text-align:center;
}

/* ---------- 保障 ---------- */
.guard-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.guard-card{
 background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
 border-radius:var(--radius);padding:24px 22px;
 transition:transform .22s ease,background .22s ease,border-color .22s ease;
}
.guard-card:hover{transform:translateY(-4px);background:rgba(255,255,255,.10);border-color:rgba(17,179,165,.44)}
.guard-icon{
 width:38px;height:38px;border-radius:11px;display:flex;align-items:center;justify-content:center;
 background:rgba(17,179,165,.20);border:1px solid rgba(17,179,165,.42);margin-bottom:14px;
}
.guard-icon svg{width:19px;height:19px;stroke:#7fe3d8;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.guard-card h3{font-size:16.4px;color:#fff}
.guard-card p{margin-top:9px;font-size:13.9px;line-height:1.8;color:#b3cdda}

/* ---------- 速答 ---------- */
.quick-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.quick-card{
 background:var(--surface);border:1px solid var(--line);border-left:3px solid var(--teal);
 border-radius:var(--radius-sm);padding:20px 22px;box-shadow:var(--shadow-sm);
 transition:transform .22s ease,box-shadow .22s ease;
}
.quick-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
.quick-card h3{font-size:15px;color:var(--teal-dark)}
.quick-card p{margin-top:8px;font-size:14px;line-height:1.78;color:var(--ink-soft)}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:14px;max-width:900px}
.faq-item{
 background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
 box-shadow:var(--shadow-sm);overflow:hidden;
}
.faq-item summary{
 cursor:pointer;list-style:none;padding:19px 22px;font-size:15.6px;font-weight:700;color:var(--ink);
 display:flex;align-items:center;justify-content:space-between;gap:16px;
 transition:color .2s ease,background .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
 content:"";width:9px;height:9px;flex:0 0 9px;
 border-right:2px solid var(--teal);border-bottom:2px solid var(--teal);
 transform:rotate(45deg);transition:transform .24s ease;margin-top:-4px;
}
.faq-item[open] summary{color:var(--teal-dark);background:rgba(17,179,165,.05)}
.faq-item[open] summary::after{transform:rotate(-135deg);margin-top:2px}
.faq-item .faq-body{padding:0 22px 20px;font-size:14.4px;line-height:1.85;color:var(--muted)}

/* ---------- 转化表单 ---------- */
.join-band{
 background:linear-gradient(118deg,var(--sea-2),var(--sea) 60%,#0f3d59);
 border-radius:var(--radius-lg);padding:42px 40px;color:#fff;
 display:grid;grid-template-columns:1.05fr .95fr;gap:36px;align-items:center;
 box-shadow:var(--shadow-lg);position:relative;overflow:hidden;
}
.join-band::after{
 content:"";position:absolute;right:-70px;top:-70px;width:260px;height:260px;border-radius:50%;
 background:radial-gradient(circle,rgba(17,179,165,.34),transparent 68%);
}
.join-band h2{font-size:clamp(21px,2.4vw,27px);color:#fff;position:relative;z-index:2}
.join-band p{margin-top:12px;font-size:14.6px;line-height:1.82;color:#b9d3e0;position:relative;z-index:2}
.join-form{position:relative;z-index:2}
.join-form label{display:block;font-size:13.4px;color:#a9cad8;margin-bottom:8px}
.join-input{
 width:100%;height:46px;border-radius:9px;border:1px solid rgba(255,255,255,.24);
 background:rgba(255,255,255,.10);color:#fff;font-size:14.5px;padding:0 14px;
 transition:border-color .2s ease,background .2s ease;
}
.join-input::placeholder{color:#8fb0c1}
.join-input:focus{outline:none;border-color:var(--teal);background:rgba(255,255,255,.15)}
.join-form .btn-main{width:100%;margin-top:12px}
.join-hint{margin-top:10px;font-size:12.6px;color:#8fb0c1}
.join-msg{margin-top:10px;font-size:13.6px;color:#7fe3d8;min-height:20px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--sea);color:#c9dfe9;padding:56px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:34px}
.footer-col h4{font-size:15px;color:#fff;margin:0 0 14px;font-weight:700;letter-spacing:.4px}
.footer-col ul li{margin-bottom:9px}
.footer-col ul a{color:#a9c6d5;font-size:14px}
.footer-col ul a:hover{color:var(--teal)}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;color:#fff}
.footer-brand strong{font-size:15.4px;letter-spacing:.3px}
.footer-about p{color:#9dbbc9;font-size:14px;line-height:1.85}
.footer-bottom{
 border-top:1px solid rgba(255,255,255,.12);margin-top:44px;padding:18px 0;
 display:flex;justify-content:space-between;gap:12px;font-size:13px;color:#87a6b6;flex-wrap:wrap;
}

/* ---------- 响应式 ---------- */
@media (min-width:992px){
 .nav-menu.collapse{display:flex !important}
}
@media (max-width:1023.98px){
 .cg-hero-inner{grid-template-columns:1fr;gap:34px}
 .cg-hero-text{max-width:none}
 .metric-grid{grid-template-columns:repeat(2,1fr)}
 .flow{grid-template-columns:repeat(3,1fr)}
 .news-grid{grid-template-columns:repeat(2,1fr)}
 .guard-grid{grid-template-columns:1fr}
 .quick-grid{grid-template-columns:1fr}
 .join-band{grid-template-columns:1fr;padding:34px 26px}
 .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:991.98px){
 .nav-toggle{display:flex}
 .nav-menu{
  position:absolute;left:0;right:0;top:64px;
  background:#fff;border-bottom:1px solid var(--line);
  padding:16px 20px 22px;flex-direction:column;align-items:stretch;gap:14px;
  box-shadow:0 18px 32px rgba(14,36,54,.14);
 }
 .nav-menu ul{flex-direction:column;align-items:stretch;gap:2px}
 .nav-menu ul a{display:block;padding:12px 4px;font-size:15.5px;border-bottom:1px solid var(--line)}
 .nav-menu ul a::after{display:none}
 .nav-menu ul a.active{color:var(--teal-dark)}
 .nav-cta{width:100%;margin-top:6px}
}
@media (max-width:767.98px){
 .section{padding:52px 0}
 .cg-hero{padding:48px 0 54px}
 .rule-grid{grid-template-columns:1fr}
 .vs-grid{grid-template-columns:1fr}
 .news-grid{grid-template-columns:1fr}
 .flow{grid-template-columns:1fr}
 .metric-grid{grid-template-columns:1fr}
 .sec-title{font-size:22px}
 .footer-grid{grid-template-columns:1fr;gap:26px}
 .footer-bottom{flex-direction:column;align-items:flex-start}
 .brand-text em{display:none}
}
@media (max-width:519.98px){
 .wrap{padding:0 16px}
 .metric-num{font-size:29px}
 .cg-hero h1{font-size:24px}
 .join-band{padding:28px 20px}
 .check-row li{font-size:13px}
}

/* roulang page: category2 */
:root{
 --ink:#0e2436;
 --ink-soft:#1d3a52;
 --sea:#0b2334;
 --sea-2:#123a54;
 --teal:#11b3a5;
 --teal-dark:#0d8f85;
 --amber:#f2a03d;
 --bg:#f4f8fb;
 --bg-tint:#eaf2f8;
 --surface:#ffffff;
 --line:#e0eaf2;
 --muted:#5f7688;
 --radius:14px;
 --radius-sm:10px;
 --radius-lg:20px;
 --shadow-sm:0 2px 10px rgba(14,36,54,.06);
 --shadow-md:0 14px 32px rgba(14,36,54,.10);
 --shadow-lg:0 24px 54px rgba(9,30,46,.18);
 --wrap:1160px;
}
*,*::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",sans-serif;
 background:var(--bg);
 color:var(--ink);
 font-size:16px;
 line-height:1.78;
 -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .2s ease,background .2s ease,border-color .2s ease}
p{margin:0 0 12px}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;line-height:1.35;color:var(--ink)}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--teal);outline-offset:3px;border-radius:6px}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 20px}
/* ---------- buttons ---------- */
.btn-main{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 background:linear-gradient(135deg,var(--teal),var(--teal-dark));
 color:#fff;font-size:15px;font-weight:600;letter-spacing:.4px;
 padding:11px 24px;border-radius:8px;border:1px solid transparent;
 box-shadow:0 8px 18px rgba(13,143,133,.26);
 transition:transform .2s ease,box-shadow .2s ease,filter .2s ease;
}
.btn-main:hover{transform:translateY(-2px);filter:brightness(1.06);box-shadow:0 14px 26px rgba(13,143,133,.32);color:#fff}
.btn-main:active{transform:translateY(0);filter:brightness(.96)}
.btn-ghost{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 background:transparent;color:var(--ink-soft);font-size:15px;font-weight:600;
 padding:10px 22px;border-radius:8px;border:1px solid rgba(14,36,54,.22);
 transition:border-color .2s ease,color .2s ease,transform .2s ease,background .2s ease;
}
.btn-ghost:hover{border-color:var(--teal);color:var(--teal-dark);transform:translateY(-2px);background:rgba(17,179,165,.06)}
.btn-light{background:#fff;color:var(--sea);box-shadow:0 10px 24px rgba(0,0,0,.18);border:1px solid #fff}
.btn-light:hover{transform:translateY(-2px);filter:none;color:var(--sea)}
.btn-sm{padding:8px 16px;font-size:13.5px}
/* ---------- header ---------- */
.site-header{
 position:sticky;top:0;z-index:1030;
 background:rgba(255,255,255,.95);
 backdrop-filter:saturate(180%) blur(10px);
 border-bottom:1px solid var(--line);
 transition:box-shadow .25s ease;
}
.site-header.scrolled{box-shadow:0 6px 22px rgba(14,36,54,.10)}
.nav-inner{height:64px;display:flex;align-items:center;justify-content:space-between;gap:18px;position:relative}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
 width:36px;height:36px;border-radius:11px;flex:0 0 36px;
 display:flex;align-items:center;justify-content:center;
 background:linear-gradient(140deg,var(--sea-2),var(--teal));
 color:#fff;font-weight:700;font-size:16px;letter-spacing:0;
 box-shadow:0 6px 14px rgba(11,35,52,.22);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:16px;font-weight:700;color:var(--ink);letter-spacing:.2px}
.brand-text em{font-style:normal;font-size:11px;color:var(--muted);letter-spacing:2px}
.nav-menu{display:flex;align-items:center;gap:26px}
.nav-menu ul{display:flex;align-items:center;gap:26px}
.nav-menu ul a{position:relative;font-size:15px;font-weight:500;color:var(--ink-soft);padding:6px 0;display:inline-block}
.nav-menu ul a::after{
 content:"";position:absolute;left:0;right:100%;bottom:0;height:2px;border-radius:2px;
 background:var(--teal);transition:right .24s ease;
}
.nav-menu ul a:hover{color:var(--teal-dark)}
.nav-menu ul a:hover::after{right:0}
.nav-menu ul a.active{color:var(--teal-dark);font-weight:700}
.nav-menu ul a.active::after{right:0}
.nav-cta{padding:9px 20px;font-size:14px}
.nav-toggle{
 display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:10px;
 background:#fff;flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink-soft);border-radius:2px}
/* ---------- section base ---------- */
.section{padding:72px 0}
.section--tint{background:var(--bg-tint)}
.section--white{background:var(--surface)}
.section--dark{background:var(--sea);color:#fff}
.section--dark h2,.section--dark h3{color:#fff}
.section--dark p{color:#b3cdda}
.sec-head{max-width:760px;margin-bottom:36px}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.sec-eyebrow{
 display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:700;
 letter-spacing:2px;color:var(--teal-dark);text-transform:uppercase;margin-bottom:12px;
}
.sec-eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--teal)}
.section--dark .sec-eyebrow{color:#7fe3d8}
.sec-head h2{font-size:clamp(22px,2.6vw,30px);font-weight:800;letter-spacing:.3px}
.sec-head p{margin-top:12px;color:var(--muted);font-size:15.5px;line-height:1.85}
.section--dark .sec-head p{color:#a9c6d4}
/* ---------- hero (category) ---------- */
.hero-cat{position:relative;overflow:hidden;background:var(--sea);color:#fff}
.hero-cat .hero-media{position:absolute;inset:0;z-index:0}
.hero-cat .hero-media img{width:100%;height:100%;object-fit:cover;opacity:.32}
.hero-cat::before{
 content:"";position:absolute;inset:0;z-index:1;
 background:
 radial-gradient(880px 400px at 82% 16%,rgba(17,179,165,.30),transparent 62%),
 linear-gradient(112deg,rgba(8,28,43,.96) 10%,rgba(9,33,50,.88) 50%,rgba(9,33,50,.62) 100%);
}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.06fr .94fr;gap:48px;padding:64px 0 68px;align-items:center}
.hero-tagline{
 display:inline-flex;align-items:center;gap:8px;font-size:12.5px;letter-spacing:1.4px;
 color:#bdeee8;background:rgba(17,179,165,.16);border:1px solid rgba(17,179,165,.4);
 padding:6px 14px;border-radius:999px;margin-bottom:18px;
}
.hero-tagline i{width:6px;height:6px;border-radius:50%;background:var(--teal);display:block}
.hero-cat h1{font-size:clamp(28px,3.6vw,42px);line-height:1.28;font-weight:800;letter-spacing:.4px;color:#fff}
.hero-sub{margin-top:14px;font-size:17px;color:#cfe6ef;font-weight:500}
.hero-copy{margin-top:16px;font-size:15.5px;line-height:1.85;color:#b9d3e0;max-width:600px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px}
.hero-actions .btn-ghost{color:#e6f4f8;border-color:rgba(255,255,255,.34)}
.hero-actions .btn-ghost:hover{color:#fff;border-color:var(--teal);background:rgba(17,179,165,.16)}
.hero-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.hero-points span{
 font-size:12.5px;color:#d7ecf2;background:rgba(255,255,255,.08);
 border:1px solid rgba(255,255,255,.16);padding:5px 13px;border-radius:999px;
}
/* power panel */
.power-panel{
 background:linear-gradient(165deg,rgba(255,255,255,.14),rgba(255,255,255,.05));
 border:1px solid rgba(255,255,255,.2);
 border-radius:var(--radius-lg);
 padding:22px 22px 24px;
 box-shadow:var(--shadow-lg);
 backdrop-filter:blur(6px);
}
.power-head{display:flex;align-items:center;gap:10px;margin-bottom:18px}
.power-head .dot{width:9px;height:9px;border-radius:50%;background:var(--teal);box-shadow:0 0 0 4px rgba(17,179,165,.18)}
.power-head strong{font-size:15.5px;color:#fff;font-weight:700}
.power-head em{margin-left:auto;font-style:normal;font-size:12px;color:#9fc4d4;letter-spacing:.6px}
.power-list li{padding:12px 0;border-top:1px solid rgba(255,255,255,.12)}
.power-list li:first-child{border-top:0;padding-top:0}
.power-row{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:14px;color:#e7f5f8}
.power-row b{font-size:13px;color:#7fe3d8;font-weight:700}
.power-bar{height:6px;border-radius:4px;background:rgba(255,255,255,.14);margin:9px 0 7px;overflow:hidden}
.power-bar i{display:block;height:100%;border-radius:4px;background:linear-gradient(90deg,var(--teal),var(--amber))}
.power-list p{font-size:12.8px;color:#a9c6d4;margin:0;line-height:1.7}
.power-panel .btn-main{width:100%;margin-top:18px}
/* ---------- metrics ---------- */
.metrics-band{background:var(--surface);border-bottom:1px solid var(--line)}
.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;padding:34px 0}
.metric-item{
 border-left:2px solid var(--teal);padding:2px 0 2px 16px;
}
.metric-item b{display:block;font-size:clamp(22px,2.6vw,30px);font-weight:800;color:var(--sea-2);line-height:1.2}
.metric-item span{display:block;font-size:13.5px;color:var(--muted);margin-top:6px}
/* ---------- cards ---------- */
.card-x{
 background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
 box-shadow:var(--shadow-sm);padding:24px;height:100%;
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card-x:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:#c8e3ee}
.card-icon{
 width:42px;height:42px;border-radius:12px;display:flex;align-items:center;justify-content:center;
 background:rgba(17,179,165,.12);color:var(--teal-dark);font-weight:800;font-size:15px;margin-bottom:14px;
}
.card-x h3{font-size:17.5px;font-weight:700;margin-bottom:10px}
.card-x p{font-size:14.5px;color:var(--muted);line-height:1.8;margin-bottom:14px}
.tag-row{display:flex;flex-wrap:wrap;gap:8px}
.tag{
 font-size:12px;color:var(--teal-dark);background:rgba(17,179,165,.10);
 border:1px solid rgba(17,179,165,.22);padding:3px 10px;border-radius:999px;
}
.tag--amber{color:#a96a12;background:rgba(242,160,61,.13);border-color:rgba(242,160,61,.3)}
/* image card */
.img-card{
 background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
 overflow:hidden;box-shadow:var(--shadow-sm);height:100%;
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.img-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#c8e3ee}
.img-card .thumb{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--bg-tint)}
.img-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.img-card:hover .thumb img{transform:scale(1.04)}
.img-card .body{padding:20px}
.img-card h3{font-size:17px;font-weight:700;margin-bottom:9px}
.img-card p{font-size:14.3px;color:var(--muted);line-height:1.8}
/* ---------- compare ---------- */
.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.compare-col{
 border-radius:var(--radius);padding:26px;border:1px solid var(--line);background:var(--surface);
 box-shadow:var(--shadow-sm);
}
.compare-col--bad{border-color:#e6dfd4;background:#fdfaf5}
.compare-col--good{border-color:rgba(17,179,165,.32);background:#f2fbfa}
.compare-col h3{font-size:17px;font-weight:700;display:flex;align-items:center;gap:9px;margin-bottom:16px}
.compare-col h3 .badge-dot{width:10px;height:10px;border-radius:50%;background:#c9a878}
.compare-col--good h3 .badge-dot{background:var(--teal)}
.compare-list li{
 position:relative;padding-left:20px;font-size:14.5px;color:var(--ink-soft);
 line-height:1.8;margin-bottom:11px;
}
.compare-list li::before{
 content:"";position:absolute;left:0;top:11px;width:7px;height:7px;border-radius:2px;
 background:#c9a878;
}
.compare-col--good .compare-list li::before{background:var(--teal)}
/* ---------- timeline ---------- */
.timeline{position:relative;padding-left:28px}
.timeline::before{content:"";position:absolute;left:7px;top:6px;bottom:6px;width:2px;background:linear-gradient(180deg,var(--teal),rgba(17,179,165,.12))}
.timeline-item{position:relative;padding-bottom:26px}
.timeline-item:last-child{padding-bottom:0}
.timeline-item::before{
 content:"";position:absolute;left:-28px;top:5px;width:16px;height:16px;border-radius:50%;
 background:#fff;border:3px solid var(--teal);box-shadow:0 0 0 4px rgba(17,179,165,.10);
}
.timeline-item b{display:block;font-size:16px;color:var(--ink);margin-bottom:6px}
.timeline-item span{display:inline-block;font-size:12px;letter-spacing:1px;color:var(--teal-dark);font-weight:700;margin-bottom:4px}
.timeline-item p{font-size:14.3px;color:var(--muted);line-height:1.8;margin:0}
/* ---------- post list ---------- */
.post-card{
 background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
 box-shadow:var(--shadow-sm);height:100%;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.post-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:#c8e3ee}
.post-card-link{display:flex;flex-direction:column;height:100%;padding:22px}
.post-tag{
 align-self:flex-start;font-size:12px;color:var(--teal-dark);background:rgba(17,179,165,.10);
 border:1px solid rgba(17,179,165,.22);padding:3px 10px;border-radius:999px;margin-bottom:12px;
}
.post-card h3{font-size:16.5px;font-weight:700;line-height:1.6;margin-bottom:9px}
.post-card-link:hover h3{color:var(--teal-dark)}
.post-card p{font-size:14.2px;color:var(--muted);line-height:1.8;margin-bottom:16px}
.post-meta{margin-top:auto;font-size:12.5px;color:#8ba3b3;letter-spacing:.4px}
.empty-note{
 background:var(--surface);border:1px dashed var(--line);border-radius:var(--radius);
 padding:34px 20px;text-align:center;color:var(--muted);font-size:14.5px;
}
/* ---------- assure ---------- */
.assure-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.assure-item{
 background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
 border-radius:var(--radius-sm);padding:20px;transition:background .2s ease,border-color .2s ease,transform .2s ease;
}
.assure-item:hover{background:rgba(255,255,255,.1);border-color:rgba(17,179,165,.5);transform:translateY(-3px)}
.assure-item b{display:block;font-size:15px;color:#fff;margin-bottom:8px}
.assure-item p{font-size:13.6px;color:#a9c6d4;line-height:1.75;margin:0}
/* ---------- quick qa ---------- */
.quick-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.quick-card{
 background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
 padding:22px;box-shadow:var(--shadow-sm);height:100%;
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.quick-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:#c8e3ee}
.quick-card h3{font-size:15.5px;font-weight:700;margin-bottom:9px;color:var(--ink)}
.quick-card p{font-size:14.2px;color:var(--muted);line-height:1.8;margin:0}
/* ---------- faq ---------- */
.faq-wrap{max-width:860px;margin:0 auto}
.accordion-item{
 border:1px solid var(--line);border-radius:var(--radius-sm) !important;
 background:var(--surface);margin-bottom:12px;overflow:hidden;box-shadow:var(--shadow-sm);
}
.accordion-button{
 font-size:15.5px;font-weight:600;color:var(--ink);background:var(--surface);
 padding:18px 20px;box-shadow:none !important;
}
.accordion-button:not(.collapsed){color:var(--teal-dark);background:#f2fbfa}
.accordion-button:focus{box-shadow:none;border-color:var(--teal)}
.accordion-body{font-size:14.5px;color:var(--muted);line-height:1.85;padding:0 20px 20px;background:#f2fbfa}
/* ---------- cta form ---------- */
.join-grid{display:grid;grid-template-columns:.95fr 1.05fr;gap:44px;align-items:center}
.join-grid h2{font-size:clamp(22px,2.6vw,30px);font-weight:800;color:#fff}
.join-grid .lead{margin-top:14px;font-size:15.5px;color:#b3cdda;line-height:1.85}
.join-points{margin-top:22px;display:grid;gap:10px}
.join-points li{display:flex;gap:10px;font-size:14.2px;color:#cfe6ef;line-height:1.7}
.join-points li::before{content:"";flex:0 0 7px;height:7px;margin-top:10px;border-radius:2px;background:var(--teal)}
.form-card{
 background:var(--surface);border-radius:var(--radius-lg);padding:28px;
 box-shadow:var(--shadow-lg);border:1px solid rgba(255,255,255,.6);
}
.form-card h3{font-size:18px;font-weight:800;margin-bottom:6px}
.form-card .hint{font-size:13.4px;color:var(--muted);margin-bottom:18px}
.form-label{font-size:13.5px;font-weight:600;color:var(--ink-soft);margin-bottom:6px}
.form-control,.form-select{
 border-radius:8px;border:1px solid var(--line);font-size:14.5px;padding:10px 14px;
 color:var(--ink);background:#fbfdfe;transition:border-color .2s ease,box-shadow .2s ease;
}
.form-control:focus,.form-select:focus{border-color:var(--teal);box-shadow:0 0 0 3px rgba(17,179,165,.14);background:#fff}
.form-card .btn-main{width:100%;margin-top:6px}
.form-note{font-size:12.4px;color:#8ba3b3;margin-top:12px;line-height:1.7}
/* ---------- footer ---------- */
.site-footer{background:var(--sea);color:#c7dce6;padding:56px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:34px;padding-bottom:38px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand strong{font-size:15.5px;color:#fff;letter-spacing:.3px}
.footer-col h4{font-size:14px;color:#fff;font-weight:700;letter-spacing:1px;margin-bottom:16px}
.footer-col p{font-size:13.6px;line-height:1.85;color:#93b1c2}
.footer-col ul li{margin-bottom:10px}
.footer-col ul a{font-size:13.8px;color:#a9c6d4;transition:color .2s ease,padding-left .2s ease}
.footer-col ul a:hover{color:#7fe3d8;padding-left:4px}
.footer-bottom{
 border-top:1px solid rgba(255,255,255,.12);padding:18px 0;
 display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
 font-size:12.8px;color:#7e9cab;
}
/* ---------- responsive ---------- */
@media (min-width:992px){
 .nav-menu.collapse{display:flex !important}
}
@media (max-width:1024px){
 .hero-grid{grid-template-columns:1fr;gap:34px;padding:52px 0 56px}
 .metric-grid{grid-template-columns:repeat(2,1fr);gap:22px}
 .assure-grid{grid-template-columns:repeat(2,1fr)}
 .quick-grid{grid-template-columns:1fr}
 .join-grid{grid-template-columns:1fr;gap:30px}
 .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:991.98px){
 .nav-toggle{display:flex}
 .nav-menu{
  position:absolute;left:0;right:0;top:64px;background:#fff;border-bottom:1px solid var(--line);
  padding:14px 20px 20px;flex-direction:column;align-items:stretch;gap:0;
  box-shadow:0 18px 32px rgba(14,36,54,.12);
 }
 .nav-menu ul{flex-direction:column;align-items:stretch;gap:0}
 .nav-menu ul li a{display:block;padding:13px 2px;border-bottom:1px solid var(--line);font-size:15px;min-height:44px}
 .nav-menu ul a::after{display:none}
 .nav-menu ul a.active{color:var(--teal-dark)}
 .nav-menu .nav-cta{margin-top:16px;width:100%;min-height:44px}
}
@media (max-width:768px){
 .section{padding:52px 0}
 .compare-grid{grid-template-columns:1fr}
 .hero-cat h1{font-size:26px}
 .hero-sub{font-size:15.5px}
 .sec-head{margin-bottom:26px}
 .post-card-link{padding:18px}
 .form-card{padding:22px}
}
@media (max-width:520px){
 .wrap{padding:0 16px}
 .metric-grid{grid-template-columns:1fr;gap:16px}
 .assure-grid{grid-template-columns:1fr}
 .footer-grid{grid-template-columns:1fr;gap:24px}
 .footer-bottom{flex-direction:column;gap:6px}
 .hero-actions .btn-main,.hero-actions .btn-ghost{width:100%}
 .brand-text em{display:none}
 .power-panel{padding:18px}
 .timeline{padding-left:24px}
}

/* roulang page: category3 */
:root{
 --ink:#0e2436;
 --ink-soft:#1d3a52;
 --sea:#0b2334;
 --sea-2:#123a54;
 --teal:#11b3a5;
 --teal-dark:#0d8f85;
 --amber:#f2a03d;
 --bg:#f4f8fb;
 --bg-tint:#eaf2f8;
 --surface:#ffffff;
 --line:#e0eaf2;
 --muted:#5f7688;
 --radius:14px;
 --radius-sm:10px;
 --radius-lg:20px;
 --shadow-sm:0 2px 10px rgba(14,36,54,.06);
 --shadow-md:0 14px 32px rgba(14,36,54,.10);
 --shadow-lg:0 24px 54px rgba(9,30,46,.18);
 --wrap:1160px;
}
*,*::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",sans-serif;
 background:var(--bg);
 color:var(--ink);
 font-size:16px;
 line-height:1.78;
 -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .2s ease,background .2s ease,border-color .2s ease,transform .2s ease}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--teal);outline-offset:3px}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 20px}

/* ---------- buttons ---------- */
.btn-main{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 background:linear-gradient(135deg,var(--teal),var(--teal-dark));
 color:#fff;font-size:15px;font-weight:600;letter-spacing:.4px;
 padding:11px 24px;border-radius:8px;border:1px solid transparent;
 box-shadow:0 8px 18px rgba(13,143,133,.26);
 transition:transform .2s ease,box-shadow .2s ease,filter .2s ease;
}
.btn-main:hover{transform:translateY(-2px);filter:brightness(1.06);box-shadow:0 14px 26px rgba(13,143,133,.32);color:#fff}
.btn-main:active{transform:translateY(0);filter:brightness(.96)}
.btn-ghost{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 background:transparent;color:var(--ink-soft);font-size:15px;font-weight:600;
 padding:10px 22px;border-radius:8px;border:1px solid rgba(14,36,54,.22);
 transition:border-color .2s ease,color .2s ease,transform .2s ease,background .2s ease;
}
.btn-ghost:hover{border-color:var(--teal);color:var(--teal-dark);transform:translateY(-2px);background:rgba(17,179,165,.06)}
.btn-light{background:#fff;color:var(--sea);box-shadow:0 10px 24px rgba(0,0,0,.18);border:1px solid #fff}
.btn-light:hover{transform:translateY(-2px);color:var(--sea)}

/* ---------- header ---------- */
.site-header{
 position:sticky;top:0;z-index:1030;
 background:rgba(255,255,255,.95);
 backdrop-filter:saturate(180%) blur(10px);
 border-bottom:1px solid var(--line);
 transition:box-shadow .25s ease;
}
.site-header.scrolled{box-shadow:0 6px 22px rgba(14,36,54,.10)}
.nav-inner{position:relative;height:64px;display:flex;align-items:center;justify-content:space-between;gap:18px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
 width:36px;height:36px;border-radius:11px;flex:0 0 36px;
 display:flex;align-items:center;justify-content:center;
 background:linear-gradient(140deg,var(--sea-2),var(--teal));
 color:#fff;font-weight:700;font-size:16px;
 box-shadow:0 6px 14px rgba(11,35,52,.22);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:16px;font-weight:700;color:var(--ink);letter-spacing:.2px}
.brand-text em{font-style:normal;font-size:11px;color:var(--muted);letter-spacing:2px}
.nav-menu{display:flex;align-items:center;gap:26px}
.nav-menu ul{display:flex;align-items:center;gap:26px}
.nav-menu ul a{position:relative;display:block;font-size:15px;font-weight:500;color:var(--ink-soft);padding:6px 0}
.nav-menu ul a::after{
 content:"";position:absolute;left:0;right:100%;bottom:0;height:2px;border-radius:2px;
 background:var(--teal);transition:right .24s ease;
}
.nav-menu ul a:hover{color:var(--teal-dark)}
.nav-menu ul a:hover::after{right:0}
.nav-menu ul a.active{color:var(--teal-dark);font-weight:700}
.nav-menu ul a.active::after{right:0}
.nav-cta{padding:9px 20px;font-size:14px}
.nav-toggle{
 display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:10px;
 background:#fff;flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink-soft);border-radius:2px}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;background:var(--sea);color:#fff}
.hero-media{position:absolute;inset:0;z-index:0}
.hero-media img{width:100%;height:100%;object-fit:cover;opacity:.32}
.hero::before{
 content:"";position:absolute;inset:0;z-index:1;
 background:
 radial-gradient(900px 420px at 76% 8%,rgba(17,179,165,.30),transparent 62%),
 linear-gradient(112deg,rgba(8,28,43,.96) 12%,rgba(9,33,50,.88) 48%,rgba(9,33,50,.62) 100%);
}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.12fr .88fr;gap:48px;padding:64px 0 74px;align-items:start}
.hero-tag{
 display:inline-flex;align-items:center;gap:8px;font-size:12.5px;letter-spacing:1.4px;
 color:#bdeee8;background:rgba(17,179,165,.16);border:1px solid rgba(17,179,165,.4);
 padding:6px 14px;border-radius:999px;margin-bottom:18px;
}
.hero-tag i{width:6px;height:6px;border-radius:50%;background:var(--teal);display:block}
.hero h1{font-size:clamp(27px,3.6vw,42px);line-height:1.32;font-weight:800;letter-spacing:.4px}
.hero-sub{margin-top:14px;font-size:16.5px;color:#cfe6ef;font-weight:500;line-height:1.7}
.hero-copy{margin-top:16px;font-size:15.5px;line-height:1.88;color:#b9d3e0;max-width:620px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px}
.hero-actions .btn-ghost{color:#e6f4f8;border-color:rgba(255,255,255,.34)}
.hero-actions .btn-ghost:hover{color:#fff;border-color:var(--teal);background:rgba(17,179,165,.16)}
.hero-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.hero-points span{
 font-size:12.5px;color:#d7ecf2;background:rgba(255,255,255,.08);
 border:1px solid rgba(255,255,255,.16);padding:5px 13px;border-radius:999px;
}
/* hero doc card */
.doc-card{
 background:rgba(255,255,255,.07);
 border:1px solid rgba(255,255,255,.18);
 border-radius:var(--radius-lg);
 padding:18px;
 box-shadow:var(--shadow-lg);
 backdrop-filter:blur(8px);
}
.doc-cover{position:relative;border-radius:12px;overflow:hidden}
.doc-cover img{width:100%;height:186px;object-fit:cover}
.doc-cover::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(9,33,50,0) 40%,rgba(9,33,50,.72) 100%)}
.doc-badge{
 position:absolute;left:12px;top:12px;z-index:2;
 font-size:11.5px;letter-spacing:1.6px;color:#062a2a;font-weight:700;
 background:#7fe3d8;padding:4px 10px;border-radius:6px;
}
.doc-title{font-size:16px;font-weight:700;color:#fff;margin:16px 0 10px;letter-spacing:.4px}
.doc-list li{
 display:flex;gap:10px;align-items:flex-start;
 font-size:13.4px;line-height:1.65;color:#c8dfe9;
 padding:9px 0;border-bottom:1px dashed rgba(255,255,255,.14);
}
.doc-list li:last-child{border-bottom:0}
.doc-list li span{
 flex:0 0 82px;color:#7fe3d8;font-weight:700;font-size:12.6px;letter-spacing:.3px;
}
.doc-btn{width:100%;margin-top:14px}
.doc-note{margin-top:12px;font-size:12px;color:#93b6c6;line-height:1.6;text-align:center}

/* ---------- section base ---------- */
.section{padding:72px 0}
.section--tint{background:var(--bg-tint)}
.section--white{background:var(--surface)}
.section--dark{background:var(--sea);color:#fff}
.sec-head{max-width:780px;margin-bottom:36px}
.sec-eyebrow{
 display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:700;
 letter-spacing:2px;color:var(--teal-dark);margin-bottom:12px;
}
.sec-eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--teal)}
.sec-head h2{font-size:clamp(22px,2.6vw,30px);font-weight:800;letter-spacing:.2px;line-height:1.42;color:var(--ink)}
.sec-head p{margin-top:12px;font-size:15px;line-height:1.88;color:var(--muted)}
.section--dark .sec-eyebrow{color:#7fe3d8}
.section--dark .sec-head h2{color:#fff}
.section--dark .sec-head p{color:#b3cdda}
.kw{color:var(--teal-dark);font-weight:700}
.section--dark .kw{color:#7fe3d8}

/* ---------- metrics ---------- */
.metric-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.metric-card{
 background:#fff;border:1px solid var(--line);border-radius:var(--radius);
 padding:22px 22px 20px;box-shadow:var(--shadow-sm);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.metric-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#c7deeb}
.metric-num{font-size:30px;font-weight:800;line-height:1.15;color:var(--teal-dark);letter-spacing:.2px}
.metric-num small{font-size:14px;font-weight:700;color:var(--ink-soft);margin-left:4px}
.metric-name{font-size:15px;font-weight:700;margin-top:8px;color:var(--ink)}
.metric-desc{font-size:13.6px;line-height:1.75;color:var(--muted);margin-top:6px}

/* ---------- stage cards ---------- */
.stage-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.stage-card{
 background:#fff;border:1px solid var(--line);border-radius:var(--radius);
 overflow:hidden;box-shadow:var(--shadow-sm);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
 display:flex;flex-direction:column;
}
.stage-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#c7deeb}
.stage-thumb{position:relative;height:158px;overflow:hidden}
.stage-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.stage-card:hover .stage-thumb img{transform:scale(1.05)}
.stage-thumb .stage-flag{
 position:absolute;left:12px;top:12px;
 font-size:12px;font-weight:700;letter-spacing:.6px;color:#062a2a;
 background:rgba(127,227,216,.94);padding:4px 11px;border-radius:6px;
}
.stage-body{padding:20px 20px 22px;display:flex;flex-direction:column;flex:1}
.stage-body h3{font-size:17.5px;font-weight:700;color:var(--ink);letter-spacing:.2px}
.stage-lead{font-size:13.2px;color:var(--teal-dark);font-weight:600;margin-top:6px;letter-spacing:.2px}
.stage-body p{font-size:14.2px;line-height:1.85;color:var(--muted);margin-top:10px}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.tag{
 font-size:12px;color:var(--ink-soft);background:var(--bg-tint);
 border:1px solid #d8e7f1;border-radius:999px;padding:4px 11px;
}
.stage-roster{margin-top:16px;padding-top:14px;border-top:1px dashed var(--line);font-size:13px;color:var(--ink-soft);line-height:1.85}
.stage-roster b{color:var(--teal-dark)}

/* ---------- compare ---------- */
.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.compare-card{
 background:#fff;border:1px solid var(--line);border-radius:var(--radius);
 padding:26px;box-shadow:var(--shadow-sm);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.compare-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:#c7deeb}
.compare-card.accent{border-color:rgba(17,179,165,.42);background:linear-gradient(180deg,#f2fcfb,#ffffff 55%)}
.compare-head{display:flex;align-items:center;gap:10px;margin-bottom:10px}
.compare-head .dot{width:10px;height:10px;border-radius:50%;background:var(--teal)}
.compare-card.alt .compare-head .dot{background:var(--amber)}
.compare-head h3{font-size:18px;font-weight:800;color:var(--ink)}
.compare-card p{font-size:14.4px;line-height:1.85;color:var(--muted);margin-top:8px}
.compare-list{margin-top:16px}
.compare-list li{
 font-size:13.8px;line-height:1.8;color:var(--ink-soft);
 padding-left:18px;position:relative;margin-bottom:8px;
}
.compare-list li::before{
 content:"";position:absolute;left:0;top:11px;width:7px;height:7px;border-radius:2px;
 background:var(--teal);opacity:.8;
}
.compare-card.alt .compare-list li::before{background:var(--amber)}
.compare-rows{margin-top:22px;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff;box-shadow:var(--shadow-sm)}
.compare-row{display:grid;grid-template-columns:.8fr 1fr 1fr;gap:14px;padding:14px 20px;font-size:14px;line-height:1.7;border-bottom:1px solid var(--line)}
.compare-row:last-child{border-bottom:0}
.compare-row.head{background:var(--bg-tint);font-weight:700;color:var(--ink);font-size:13.6px;letter-spacing:.4px}
.compare-row span:first-child{color:var(--muted)}
.compare-row span{color:var(--ink-soft)}

/* ---------- timeline ---------- */
.timeline{display:grid;grid-template-columns:repeat(5,1fr);gap:14px;counter-reset:tl}
.tl-item{
 position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
 padding:22px 18px 20px;box-shadow:var(--shadow-sm);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.tl-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:#c7deeb}
.tl-item::before{
 counter-increment:tl;content:counter(tl,decimal-leading-zero);
 display:inline-block;font-size:12px;font-weight:800;letter-spacing:1px;color:#fff;
 background:linear-gradient(135deg,var(--sea-2),var(--teal));
 padding:3px 9px;border-radius:6px;margin-bottom:12px;
}
.tl-item h3{font-size:15.5px;font-weight:700;color:var(--ink)}
.tl-item p{font-size:13.4px;line-height:1.8;color:var(--muted);margin-top:8px}

/* ---------- news ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.news-card{
 display:flex;flex-direction:column;
 background:#fff;border:1px solid var(--line);border-radius:var(--radius);
 padding:22px;box-shadow:var(--shadow-sm);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#c7deeb}
.news-tag{
 align-self:flex-start;font-size:11.6px;font-weight:700;letter-spacing:.6px;
 color:var(--teal-dark);background:rgba(17,179,165,.12);
 border:1px solid rgba(17,179,165,.26);border-radius:999px;padding:3px 10px;
}
.news-card h3{font-size:16px;font-weight:700;line-height:1.6;color:var(--ink);margin-top:12px}
.news-card:hover h3{color:var(--teal-dark)}
.news-card p{font-size:13.8px;line-height:1.8;color:var(--muted);margin-top:8px;flex:1}
.news-meta{display:block;margin-top:14px;padding-top:12px;border-top:1px dashed var(--line);font-size:12.6px;color:#8aa3b4;letter-spacing:.3px}
.news-empty{
 background:#fff;border:1px dashed #cfe0ec;border-radius:var(--radius);
 padding:32px;text-align:center;color:var(--muted);font-size:14.5px;
}
.news-foot{margin-top:26px;text-align:center}

/* ---------- assurance ---------- */
.assure-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.assure-card{
 background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);
 border-radius:var(--radius);padding:22px 20px;
 transition:transform .2s ease,border-color .2s ease,background .2s ease;
}
.assure-card:hover{transform:translateY(-3px);border-color:rgba(127,227,216,.5);background:rgba(17,179,165,.12)}
.assure-ico{
 width:38px;height:38px;border-radius:10px;display:flex;align-items:center;justify-content:center;
 background:rgba(127,227,216,.16);border:1px solid rgba(127,227,216,.4);margin-bottom:14px;
}
.assure-ico svg{width:19px;height:19px;stroke:#7fe3d8;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.assure-card h3{font-size:15.5px;font-weight:700;color:#fff}
.assure-card p{font-size:13.4px;line-height:1.8;color:#b3cdda;margin-top:8px}

/* ---------- quick answers ---------- */
.quick-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.quick-card{
 background:#fff;border:1px solid var(--line);border-radius:var(--radius);
 padding:24px;box-shadow:var(--shadow-sm);border-top:3px solid var(--teal);
 transition:transform .2s ease,box-shadow .2s ease;
}
.quick-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
.quick-card h3{font-size:15.5px;font-weight:700;color:var(--ink);line-height:1.6}
.quick-card p{font-size:14px;line-height:1.85;color:var(--muted);margin-top:10px}
.quick-card strong{color:var(--teal-dark)}

/* ---------- faq ---------- */
.faq-wrap{display:grid;grid-template-columns:.62fr 1fr;gap:40px;align-items:start}
.faq-side h2{font-size:clamp(22px,2.4vw,28px);font-weight:800;line-height:1.42;color:var(--ink)}
.faq-side p{font-size:14.6px;line-height:1.88;color:var(--muted);margin-top:12px}
.faq-side .faq-side-img{margin-top:22px;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-md)}
.faq-side .faq-side-img img{width:100%;height:170px;object-fit:cover}
.faq-acc .accordion-item{
 border:1px solid var(--line);border-radius:var(--radius-sm)!important;
 margin-bottom:12px;overflow:hidden;background:#fff;box-shadow:var(--shadow-sm);
}
.faq-acc .accordion-button{
 font-size:15.2px;font-weight:700;color:var(--ink);background:#fff;
 padding:17px 20px;box-shadow:none;line-height:1.6;
}
.faq-acc .accordion-button:not(.collapsed){color:var(--teal-dark);background:#f2fcfb}
.faq-acc .accordion-button:focus{box-shadow:0 0 0 3px rgba(17,179,165,.18);border-color:transparent}
.faq-acc .accordion-button::after{width:14px;height:14px;background-size:14px}
.faq-acc .accordion-body{font-size:14.2px;line-height:1.88;color:var(--muted);padding:4px 20px 20px;background:#fff}

/* ---------- join ---------- */
.join-grid{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center}
.join-copy h2{font-size:clamp(23px,2.6vw,31px);font-weight:800;line-height:1.42;color:#fff}
.join-copy p{font-size:15px;line-height:1.88;color:#b9d3e0;margin-top:14px}
.join-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.join-points span{
 font-size:12.5px;color:#d7ecf2;background:rgba(255,255,255,.08);
 border:1px solid rgba(255,255,255,.18);padding:5px 13px;border-radius:999px;
}
.join-form{
 background:#fff;border-radius:var(--radius-lg);padding:26px;
 box-shadow:var(--shadow-lg);border:1px solid rgba(255,255,255,.5);
}
.form-row{margin-bottom:16px}
.form-row label{display:block;font-size:13.2px;font-weight:700;color:var(--ink-soft);margin-bottom:7px;letter-spacing:.3px}
.form-row input,.form-row select{
 width:100%;height:44px;border:1px solid var(--line);border-radius:8px;
 padding:0 13px;font-size:14.5px;color:var(--ink);background:#f9fbfd;
 transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.form-row input::placeholder{color:#9aafbe}
.form-row input:focus,.form-row select:focus{
 outline:none;border-color:var(--teal);background:#fff;
 box-shadow:0 0 0 3px rgba(17,179,165,.16);
}
.form-row select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,#5f7688 50%),linear-gradient(135deg,#5f7688 50%,transparent 50%);background-position:calc(100% - 18px) 19px,calc(100% - 13px) 19px;background-size:5px 5px,5px 5px;background-repeat:no-repeat}
.join-form .btn-main{width:100%;height:46px;margin-top:4px}
.form-hint{font-size:12.6px;line-height:1.7;color:var(--muted);margin-top:12px;text-align:center}
.form-hint.is-ok{color:var(--teal-dark);font-weight:700}

/* ---------- footer ---------- */
.site-footer{background:var(--sea);color:#c7dce7;padding:56px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr .8fr .8fr 1.1fr;gap:34px;padding-bottom:40px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand strong{font-size:16px;font-weight:700;color:#fff;letter-spacing:.2px}
.footer-about p{font-size:13.8px;line-height:1.9;color:#93b1c2}
.footer-col h4{font-size:13.6px;font-weight:700;letter-spacing:1.4px;color:#fff;margin-bottom:14px}
.footer-col ul li{margin-bottom:9px;font-size:13.8px}
.footer-col ul a{color:#9fbdcd}
.footer-col ul a:hover{color:#7fe3d8}
.footer-col p{font-size:13.6px;line-height:1.85;color:#93b1c2}
.footer-bottom{
 display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;
 padding:20px 0;border-top:1px solid rgba(255,255,255,.12);
 font-size:12.8px;color:#7f9dae;letter-spacing:.2px;
}

/* ---------- responsive ---------- */
@media (min-width:992px){
 .nav-menu.collapse{display:flex!important;height:auto!important;visibility:visible!important}
}
@media (max-width:1024px){
 .hero-grid{grid-template-columns:1fr;gap:32px;padding:52px 0 60px}
 .doc-card{max-width:560px}
 .metric-grid{grid-template-columns:repeat(2,1fr)}
 .stage-grid{grid-template-columns:1fr 1fr}
 .news-grid{grid-template-columns:1fr 1fr}
 .assure-grid{grid-template-columns:1fr 1fr}
 .quick-grid{grid-template-columns:1fr}
 .timeline{grid-template-columns:repeat(3,1fr)}
 .faq-wrap{grid-template-columns:1fr;gap:26px}
 .join-grid{grid-template-columns:1fr;gap:30px}
 .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:991.98px){
 .nav-toggle{display:flex}
 .nav-menu{
  position:absolute;top:100%;left:0;right:0;z-index:1040;
  background:#fff;border-bottom:1px solid var(--line);border-radius:0 0 14px 14px;
  box-shadow:0 18px 36px rgba(14,36,54,.14);
  padding:12px 20px 18px;flex-direction:column;align-items:stretch;gap:10px;
 }
 .nav-menu ul{flex-direction:column;align-items:stretch;gap:2px}
 .nav-menu ul a{display:block;padding:11px 4px;font-size:15px;border-bottom:1px solid #f0f5f9}
 .nav-menu ul a::after{display:none}
 .nav-menu ul a.active{background:var(--bg-tint);border-radius:8px;padding-left:10px}
 .nav-cta{width:100%;margin-top:6px}
}
@media (max-width:768px){
 .section{padding:52px 0}
 .hero h1{font-size:26px}
 .hero-copy{font-size:14.6px}
 .metric-grid{grid-template-columns:1fr 1fr;gap:12px}
 .metric-card{padding:18px}
 .metric-num{font-size:25px}
 .stage-grid{grid-template-columns:1fr}
 .compare-grid{grid-template-columns:1fr}
 .compare-row{grid-template-columns:1fr;gap:4px;padding:13px 16px}
 .compare-row.head{display:none}
 .compare-row span:first-child{font-size:12.6px;letter-spacing:.4px;color:#8aa3b4}
 .timeline{grid-template-columns:1fr 1fr}
 .news-grid{grid-template-columns:1fr}
 .assure-grid{grid-template-columns:1fr}
 .footer-grid{grid-template-columns:1fr}
 .brand-text em{display:none}
}
@media (max-width:520px){
 .wrap{padding:0 16px}
 .metric-grid{grid-template-columns:1fr}
 .timeline{grid-template-columns:1fr}
 .hero-actions .btn-main,.hero-actions .btn-ghost{width:100%}
 .doc-cover img{height:158px}
 .join-form{padding:20px}
 .footer-bottom{flex-direction:column;align-items:flex-start;gap:6px}
}

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}