/* roulang page: index */
:root{
  --ink:#0b1524;
  --ink-soft:#14283c;
  --brand:#0f7a6c;
  --brand-2:#13a08d;
  --brand-soft:#e6f5f2;
  --gold:#c2903a;
  --bg:#f5f7fa;
  --card:#ffffff;
  --line:#e2e8f0;
  --line-soft:#eef2f7;
  --text:#1b2733;
  --muted:#5c6c7d;
  --radius:16px;
  --radius-sm:10px;
  --shadow:0 1px 2px rgba(15,35,55,.05),0 12px 28px -18px rgba(15,35,55,.28);
  --shadow-hover:0 2px 4px rgba(15,35,55,.06),0 22px 40px -22px rgba(15,35,55,.36);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
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(--text);
  line-height:1.75;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
h1,h2,h3,h4{line-height:1.35;font-weight:700;overflow-wrap:break-word}
.wrap{width:100%;max-width:1180px;margin:0 auto;padding:0 20px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.94);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid var(--line);
}
.nav-top{display:flex;align-items:center;gap:18px;height:68px}
.brand{display:flex;align-items:center;gap:10px;min-width:0;flex-shrink:0}
.brand-mark{
  width:38px;height:38px;border-radius:10px;flex-shrink:0;
  background:linear-gradient(150deg,#0f7a6c,#0b3b47);
  color:#7ff0d9;display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:15px;letter-spacing:.5px;
  box-shadow:0 6px 16px -8px rgba(15,122,108,.9);
}
.brand-text{display:flex;flex-direction:column;min-width:0}
.brand-name{font-size:15px;font-weight:800;letter-spacing:.2px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:260px}
.brand-sub{font-size:11px;color:var(--muted);letter-spacing:2px;line-height:1.2}
.nav-main{display:flex;align-items:center;gap:4px;margin-left:8px}
.nav-main a{
  padding:8px 13px;border-radius:9px;font-size:14.5px;color:#33475b;font-weight:500;
  transition:background .2s ease,color .2s ease;
}
.nav-main a:hover{background:var(--brand-soft);color:var(--brand)}
.nav-main a.is-active{background:var(--brand);color:#fff;font-weight:600}
.nav-main a.is-active:hover{background:var(--brand-2);color:#fff}
.nav-tools{display:flex;align-items:center;gap:10px;margin-left:auto}
.search-form{display:flex;align-items:center;background:#f1f5f9;border:1px solid var(--line);border-radius:10px;padding:4px 6px 4px 10px;transition:border-color .2s,box-shadow .2s}
.search-form:focus-within{border-color:var(--brand-2);box-shadow:0 0 0 3px rgba(19,160,141,.14);background:#fff}
.search-form input{border:0;background:transparent;outline:none;font-size:13.5px;width:132px;color:var(--text)}
.search-form button{border:0;background:var(--brand);color:#fff;border-radius:7px;padding:5px 11px;font-size:13px;transition:background .2s}
.search-form button:hover{background:var(--brand-2)}
.btn-dl{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--ink);color:#fff;padding:9px 16px;border-radius:10px;
  font-size:14px;font-weight:600;white-space:nowrap;
  transition:background .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn-dl:hover{background:#16304a;transform:translateY(-1px);box-shadow:0 10px 22px -14px rgba(11,21,36,.9)}
.menu-toggle{display:none;border:1px solid var(--line);background:#fff;border-radius:9px;padding:7px 10px;color:#33475b}

.nav-channels{border-top:1px solid var(--line-soft);background:#fbfcfe}
.nav-channels .wrap{display:flex;align-items:center;gap:14px;height:44px;overflow:hidden}
.chn-label{font-size:12px;color:#8194a6;letter-spacing:1px;flex-shrink:0}
.chn-list{display:flex;align-items:center;gap:6px;overflow-x:auto;scrollbar-width:none}
.chn-list::-webkit-scrollbar{display:none}
.chn-list a,.chn-list span{
  font-size:13px;color:#4a5d70;padding:4px 10px;border-radius:999px;white-space:nowrap;
  background:#fff;border:1px solid var(--line);transition:all .2s ease;
}
.chn-list a:hover{color:var(--brand);border-color:#b8e3db;background:var(--brand-soft)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:11px;font-size:15px;font-weight:600;
  border:1px solid transparent;transition:all .22s ease;text-align:center;
}
.btn:focus-visible{outline:3px solid rgba(19,160,141,.45);outline-offset:2px}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 12px 26px -16px rgba(15,122,108,.95)}
.btn-primary:hover{background:var(--brand-2);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:rgba(255,255,255,.06);color:#d9ecf3;border-color:rgba(255,255,255,.28)}
.btn-ghost:hover{background:rgba(255,255,255,.14);color:#fff}
.btn-line{background:#fff;color:var(--brand);border-color:#bfe3dc}
.btn-line:hover{background:var(--brand-soft)}

/* ---------- hero ---------- */
.hero{
  position:relative;overflow:hidden;color:#e8f1f6;
  background:
    radial-gradient(900px 420px at 82% -10%,rgba(19,160,141,.32),transparent 70%),
    radial-gradient(700px 400px at 8% 110%,rgba(37,99,235,.20),transparent 72%),
    linear-gradient(160deg,#0b1524 0%,#0e2334 58%,#0c3236 100%);
  padding:60px 0 0;
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:56px 56px;mask-image:linear-gradient(180deg,rgba(0,0,0,.55),transparent 78%);
}
.hero-inner{position:relative;z-index:2;max-width:960px}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;letter-spacing:2px;color:#7ff0d9;
  border:1px solid rgba(127,240,217,.34);background:rgba(19,160,141,.14);
  padding:6px 14px;border-radius:999px;margin-bottom:22px;
}
.hero h1{
  font-size:clamp(1.55rem,3.5vw,2.45rem);color:#fff;letter-spacing:.4px;margin-bottom:20px;
}
.hero-lead{font-size:16px;line-height:1.95;color:#b9cdd9;max-width:840px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:28px 0 0}
.metric-strip{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  margin-top:44px;border-top:1px solid rgba(255,255,255,.14);
}
.metric{padding:24px 22px 30px;border-right:1px solid rgba(255,255,255,.09);min-width:0}
.metric:last-child{border-right:0}
.metric b{display:block;font-size:clamp(1.25rem,2vw,1.6rem);color:#7ff0d9;letter-spacing:.5px;margin-bottom:6px}
.metric span{display:block;font-size:13px;color:#9db4c3;line-height:1.6}

/* ---------- sections ---------- */
.section{padding:62px 0}
.section-tint{background:#eef3f8}
.section-dark{background:var(--ink);color:#dfeaf1}
.section-head{max-width:820px;margin-bottom:30px}
.eyebrow{
  display:inline-block;font-size:12px;letter-spacing:2px;color:var(--brand);
  background:var(--brand-soft);border-radius:999px;padding:5px 13px;margin-bottom:14px;font-weight:600;
}
.section-head h2{font-size:clamp(1.28rem,2.2vw,1.72rem);margin-bottom:12px;letter-spacing:.3px}
.section-head p{color:var(--muted);font-size:15px;line-height:1.9}
.section-dark .section-head h2{color:#fff}
.section-dark .section-head p{color:#a9bfcd}
.section-dark .eyebrow{background:rgba(19,160,141,.18);color:#7ff0d9}

.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.grid-2>*,.grid-3>*,.grid-4>*{min-width:0}

.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;min-width:0;box-shadow:var(--shadow);
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#cfe0dd}
.card h3{font-size:16.5px;margin-bottom:10px}
.card p{font-size:14.5px;color:var(--muted);line-height:1.85}
.card-tag{font-size:12px;color:var(--brand);font-weight:700;letter-spacing:1px;display:inline-block;margin-bottom:8px}

/* ---------- download ---------- */
.download-section{padding:0 0 62px;margin-top:-1px;background:#eef3f8}
.download-panel{
  position:relative;
  background:linear-gradient(140deg,#0d2b34,#0b1524 70%);
  border-radius:20px;padding:38px 34px;color:#e6f1f5;
  box-shadow:0 30px 60px -40px rgba(11,21,36,.9);overflow:hidden;
}
.download-panel::after{
  content:"";position:absolute;right:-70px;top:-70px;width:260px;height:260px;border-radius:50%;
  background:radial-gradient(circle,rgba(19,160,141,.35),transparent 68%);
}
.download-inner{position:relative;z-index:2}
.download-head h2{font-size:clamp(1.2rem,2vw,1.55rem);color:#fff;margin-bottom:10px}
.download-head p{color:#a7c0cd;font-size:14.5px;max-width:720px;line-height:1.85}
.dl-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-top:26px}
.dl-item{
  display:flex;flex-direction:column;gap:6px;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);
  border-radius:14px;padding:18px 20px;
  transition:background .22s ease,border-color .22s ease,transform .22s ease;
}
.dl-item:hover{background:rgba(19,160,141,.20);border-color:rgba(127,240,217,.55);transform:translateY(-2px)}
.dl-item strong{font-size:15.5px;color:#fff;display:flex;align-items:center;gap:8px}
.dl-item span{font-size:13px;color:#a9c2cf}
.dl-item em{font-style:normal;font-size:12.5px;color:#7ff0d9;letter-spacing:1px;margin-top:4px}

/* ---------- calendar ---------- */
.cal-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.cal-item{
  display:flex;gap:16px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:20px;min-width:0;box-shadow:var(--shadow);
}
.cal-day{
  flex-shrink:0;width:64px;text-align:center;border-radius:12px;
  background:var(--brand-soft);color:var(--brand);padding:10px 0;
}
.cal-day b{display:block;font-size:17px;line-height:1.2}
.cal-day span{font-size:11.5px;color:#3f8b81}
.cal-body h3{font-size:15.5px;margin-bottom:6px}
.cal-body p{font-size:14px;color:var(--muted);line-height:1.8}

/* ---------- tags ---------- */
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
.tag-cloud span{
  display:inline-block;padding:8px 16px;border-radius:999px;font-size:14px;
  background:#fff;border:1px solid var(--line);color:#41556a;
  transition:all .22s ease;box-shadow:0 1px 2px rgba(15,35,55,.04);
}
.tag-cloud span:hover{border-color:#bfe3dc;color:var(--brand);background:var(--brand-soft);transform:translateY(-2px)}

/* ---------- quotes ---------- */
.quote-card{
  background:#fff;border:1px solid var(--line);border-left:4px solid var(--brand);
  border-radius:var(--radius);padding:24px;min-width:0;box-shadow:var(--shadow);
}
.quote-card h3{font-size:16px;margin-bottom:10px;color:#12303c}
.quote-card p{font-size:14.5px;color:var(--muted);line-height:1.9}

/* ---------- news ---------- */
.news-layout{display:grid;grid-template-columns:minmax(0,1.9fr) minmax(0,1fr);gap:26px}
.news-list{display:grid;gap:14px}
.news-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px 22px;
  min-width:0;box-shadow:var(--shadow);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:#cfe0dd}
.news-card h3{font-size:16px;margin-bottom:8px}
.news-card a h3{transition:color .2s ease}
.news-card:hover h3{color:var(--brand)}
.news-card p{font-size:14px;color:var(--muted);line-height:1.8;margin-bottom:10px}
.news-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:12.5px;color:#8194a6}
.news-meta .chip{background:var(--brand-soft);color:var(--brand);border-radius:6px;padding:2px 9px;font-weight:600}
.side-panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow)}
.side-panel h3{font-size:15px;margin-bottom:14px;padding-bottom:12px;border-bottom:1px solid var(--line-soft)}
.side-list{display:grid;gap:12px}
.side-list li{display:flex;gap:10px;font-size:14px;color:#3b4d5f;line-height:1.7;min-width:0}
.side-list .dot{width:6px;height:6px;border-radius:50%;background:var(--brand-2);margin-top:9px;flex-shrink:0}
.side-list a{transition:color .2s ease}
.side-list a:hover{color:var(--brand)}
.more-link{display:inline-flex;align-items:center;gap:6px;margin-top:18px;font-size:14px;font-weight:600;color:var(--brand)}
.more-link:hover{color:var(--brand-2)}
.empty-tip{font-size:14px;color:var(--muted);background:#f8fafc;border:1px dashed var(--line);border-radius:12px;padding:26px;text-align:center}

/* ---------- data bars ---------- */
.bar-chart{display:grid;gap:16px}
.bar-row{display:grid;grid-template-columns:96px minmax(0,1fr) 66px;align-items:center;gap:14px;min-width:0}
.bar-row .bar-label{font-size:14px;color:#41556a;font-weight:600}
.bar-track{background:#e7eef5;border-radius:999px;height:12px;overflow:hidden;min-width:0}
.bar-fill{height:100%;border-radius:999px;background:linear-gradient(90deg,#13a08d,#0f7a6c)}
.bar-fill.warn{background:linear-gradient(90deg,#e2a33f,#c2702a)}
.bar-fill.danger{background:linear-gradient(90deg,#e26a5c,#b73c33)}
.bar-row .bar-value{font-size:13.5px;color:#5c6c7d;text-align:right}

/* ---------- table ---------- */
.table-wrap{overflow-x:auto;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.param-table{width:100%;border-collapse:collapse;min-width:640px;font-size:14.5px}
.param-table th,.param-table td{padding:15px 18px;text-align:left;border-bottom:1px solid var(--line-soft)}
.param-table th{background:#f4f8fa;color:#2b4152;font-weight:700;font-size:13.5px;letter-spacing:.4px;white-space:nowrap}
.param-table td{color:#40566a}
.param-table tr:last-child td{border-bottom:0}
.param-table tbody tr:hover{background:#f8fbfb}
.risk-high{color:#b73c33;font-weight:700}
.risk-mid{color:#c2702a;font-weight:700}
.risk-low{color:var(--brand);font-weight:700}
.table-note{font-size:13px;color:#7d8fa1;margin-top:12px;line-height:1.8}

/* ---------- steps ---------- */
.step-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;counter-reset:step}
.step-card{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 22px 22px;min-width:0;box-shadow:var(--shadow);
}
.step-card::before{
  counter-increment:step;content:counter(step);
  position:absolute;top:-14px;left:22px;
  width:32px;height:32px;border-radius:9px;background:var(--brand);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:15px;font-weight:800;
  box-shadow:0 8px 18px -10px rgba(15,122,108,.95);
}
.step-card h3{font-size:15.5px;margin:8px 0 8px}
.step-card p{font-size:14px;color:var(--muted);line-height:1.8}

/* ---------- check list ---------- */
.check-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px 24px}
.check-list li{
  display:flex;gap:11px;align-items:flex-start;font-size:14.5px;color:#cfdde6;line-height:1.8;min-width:0;
}
.check-list .tick{
  width:20px;height:20px;border-radius:6px;background:rgba(19,160,141,.22);color:#7ff0d9;
  display:flex;align-items:center;justify-content:center;font-size:12px;flex-shrink:0;margin-top:3px;font-weight:800;
}

/* ---------- category entry ---------- */
.cat-entry{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:18px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 28px;
  box-shadow:var(--shadow);transition:border-color .22s ease,box-shadow .22s ease;
}
.cat-entry:hover{border-color:#bfe3dc;box-shadow:var(--shadow-hover)}
.cat-entry h3{font-size:17px;margin-bottom:6px}
.cat-entry p{font-size:14.5px;color:var(--muted);line-height:1.85;max-width:700px}

/* ---------- faq ---------- */
.faq-list{display:grid;gap:14px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}
.faq-item summary{
  list-style:none;cursor:pointer;padding:20px 24px;font-size:15.5px;font-weight:700;color:#1c3242;
  display:flex;align-items:center;justify-content:space-between;gap:14px;transition:background .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{background:#f6faf9}
.faq-item summary::after{content:"+";font-size:20px;color:var(--brand);line-height:1;transition:transform .2s ease}
.faq-item[open] summary::after{content:"−"}
.faq-item .faq-body{padding:0 24px 22px;font-size:14.5px;color:var(--muted);line-height:1.95}

/* ---------- risk ---------- */
.risk-band{
  background:#fff8ed;border:1px solid #f2ddb9;border-radius:var(--radius);
  padding:26px 28px;color:#7a5a1f;
}
.risk-band h2{font-size:16.5px;margin-bottom:10px;color:#6d4c11}
.risk-band p{font-size:14.5px;line-height:1.95;color:#836326}

/* ---------- cta band ---------- */
.cta-band{
  background:linear-gradient(135deg,#0f7a6c,#0b3b47 85%);
  border-radius:20px;padding:38px 34px;color:#e9f6f4;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:22px;
  box-shadow:0 30px 60px -42px rgba(11,59,71,.95);
}
.cta-band h2{font-size:clamp(1.15rem,2vw,1.5rem);color:#fff;margin-bottom:8px}
.cta-band p{font-size:14.5px;color:#bfe2dc;max-width:640px;line-height:1.85}
.cta-band .btn-light{background:#fff;color:#0f7a6c}
.cta-band .btn-light:hover{background:#eafaf7}

/* ---------- footer ---------- */
.site-footer{background:#0b1524;color:#9db4c3;padding:52px 0 26px;margin-top:10px}
.footer-grid{display:grid;grid-template-columns:minmax(0,1.5fr) repeat(3,minmax(0,1fr));gap:32px}
.footer-brand .brand-name{color:#fff;font-size:16px;font-weight:800;margin-bottom:12px}
.footer-brand p{font-size:13.5px;line-height:1.9;color:#8ba3b3;max-width:340px}
.footer-col h4{font-size:14px;color:#e4eef4;margin-bottom:14px;letter-spacing:.5px}
.footer-col a,.footer-col span{display:block;font-size:13.5px;color:#8ba3b3;margin-bottom:9px;transition:color .2s ease}
.footer-col a:hover{color:#7ff0d9}
.friend-links{margin-top:34px;padding-top:24px;border-top:1px solid rgba(255,255,255,.1)}
.friend-links h4{font-size:13.5px;color:#e4eef4;margin-bottom:14px;letter-spacing:.5px}
.friend-links .links{display:flex;flex-wrap:wrap;gap:10px 20px}
.friend-links a{font-size:13px;color:#8ba3b3;transition:color .2s ease}
.friend-links a:hover{color:#7ff0d9}
.footer-bottom{
  margin-top:28px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;gap:10px 22px;justify-content:space-between;
  font-size:12.5px;color:#708699;
}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .step-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:22px 18px}
  .news-layout{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px}
  .metric-strip{grid-template-columns:repeat(2,minmax(0,1fr))}
  .metric{border-bottom:1px solid rgba(255,255,255,.09)}
  .metric:nth-child(2n){border-right:0}
  .search-form{display:none}
}
@media (max-width:768px){
  .nav-top{height:62px;gap:12px}
  .nav-main{display:none}
  .nav-main.is-open{
    display:flex;position:absolute;left:0;right:0;top:100%;
    flex-direction:column;align-items:stretch;gap:2px;
    background:#fff;border-bottom:1px solid var(--line);padding:12px 20px 18px;
    box-shadow:0 20px 30px -24px rgba(11,21,36,.6);
  }
  .nav-main.is-open a{padding:11px 14px;border-radius:10px;font-size:15px}
  .menu-toggle{display:inline-flex;order:3}
  .brand-name{max-width:170px;font-size:13.5px}
  .brand-sub{display:none}
  .nav-channels .wrap{height:auto;padding-top:10px;padding-bottom:10px;flex-direction:column;align-items:flex-start;gap:8px}
  .grid-2,.grid-3,.grid-4,.cal-list,.dl-grid,.check-list{grid-template-columns:minmax(0,1fr)}
  .section{padding:48px 0}
  .hero{padding:44px 0 0}
  .hero-actions .btn{width:100%}
  .download-panel,.cta-band{padding:26px 22px;border-radius:16px}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:24px}
  .cat-entry{padding:22px}
  .bar-row{grid-template-columns:76px minmax(0,1fr) 58px;gap:10px}
}
@media (max-width:520px){
  body{font-size:15px}
  .wrap{padding:0 16px}
  .metric-strip{grid-template-columns:minmax(0,1fr)}
  .metric{border-right:0}
  .step-grid{grid-template-columns:minmax(0,1fr)}
  .hero h1{font-size:1.42rem}
  .faq-item summary{padding:16px 18px;font-size:14.5px}
  .faq-item .faq-body{padding:0 18px 18px}
}

/* roulang page: article */
:root{
  --ink:#0b1524;
  --ink-soft:#14283c;
  --brand:#0f7a6c;
  --brand-2:#13a08d;
  --brand-soft:#e6f5f2;
  --gold:#c2903a;
  --bg:#f5f7fa;
  --card:#ffffff;
  --line:#e2e8f0;
  --line-soft:#eef2f7;
  --text:#1b2733;
  --muted:#5c6c7d;
  --radius:16px;
  --radius-sm:10px;
  --shadow:0 1px 2px rgba(15,35,55,.05),0 12px 28px -18px rgba(15,35,55,.28);
  --shadow-hover:0 2px 4px rgba(15,35,55,.06),0 22px 40px -22px rgba(15,35,55,.36);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
.page-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(--text);
  line-height:1.75;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer}
h1,h2,h3,h4,p,ul,ol{margin:0}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.94);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid var(--line);
}
.nav-top{display:flex;align-items:center;gap:18px;height:68px}
.brand{display:flex;align-items:center;gap:10px;min-width:0;flex-shrink:0}
.brand-mark{
  width:38px;height:38px;border-radius:10px;flex-shrink:0;
  background:linear-gradient(150deg,#0f7a6c,#0b3b47);
  color:#7ff0d9;display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:15px;letter-spacing:.5px;
  box-shadow:0 6px 16px -8px rgba(15,122,108,.9);
}
.brand-text{display:flex;flex-direction:column;min-width:0}
.brand-name{font-size:15px;font-weight:800;letter-spacing:.2px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:260px;line-height:1.4}
.brand-sub{font-size:11px;color:var(--muted);letter-spacing:2px;line-height:1.2}
.nav-main{display:flex;align-items:center;gap:4px;margin-left:8px}
.nav-main a{
  padding:8px 13px;border-radius:9px;font-size:14.5px;color:#33475b;font-weight:500;
  transition:background .2s ease,color .2s ease;
}
.nav-main a:hover{background:var(--brand-soft);color:var(--brand)}
.nav-main a.is-active{background:var(--brand);color:#fff;font-weight:600}
.nav-main a.is-active:hover{background:var(--brand-2);color:#fff}
.nav-tools{display:flex;align-items:center;gap:10px;margin-left:auto}
.search-form{display:flex;align-items:center;background:#f1f5f9;border:1px solid var(--line);border-radius:10px;padding:4px 6px 4px 10px;transition:border-color .2s,box-shadow .2s}
.search-form:focus-within{border-color:var(--brand-2);box-shadow:0 0 0 3px rgba(19,160,141,.14);background:#fff}
.search-form input{border:0;background:transparent;outline:none;font-size:13.5px;width:132px;color:var(--text)}
.search-form button{border:0;background:var(--brand);color:#fff;border-radius:7px;padding:5px 11px;font-size:13px;transition:background .2s}
.search-form button:hover{background:var(--brand-2)}
.btn-dl{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--ink);color:#fff;padding:9px 16px;border-radius:10px;
  font-size:14px;font-weight:600;white-space:nowrap;
  transition:background .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn-dl:hover{background:#16304a;transform:translateY(-1px);box-shadow:0 10px 22px -14px rgba(11,21,36,.9)}
.menu-toggle{display:none;border:1px solid var(--line);background:#fff;border-radius:9px;padding:7px 10px;color:#33475b}
.menu-toggle:hover{background:var(--brand-soft);color:var(--brand)}
.nav-channels{border-top:1px solid var(--line-soft);background:#fbfcfe}
.nav-channels .wrap{display:flex;align-items:center;gap:14px;height:44px;overflow:hidden}
.chn-label{font-size:12px;letter-spacing:1px;color:#7d8e9e;white-space:nowrap;flex-shrink:0}
.chn-list{display:flex;align-items:center;gap:6px;overflow-x:auto;scrollbar-width:none}
.chn-list::-webkit-scrollbar{display:none}
.chn-list a,.chn-list span{
  font-size:13px;color:#4a5d70;padding:4px 10px;border-radius:999px;white-space:nowrap;
  background:#fff;border:1px solid var(--line);transition:all .2s ease;
}
.chn-list a:hover{color:var(--brand);border-color:#b8e3db;background:var(--brand-soft)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:11px;font-size:15px;font-weight:600;
  border:1px solid transparent;transition:all .22s ease;text-align:center;
}
.btn:focus-visible{outline:3px solid rgba(19,160,141,.45);outline-offset:2px}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 12px 26px -16px rgba(15,122,108,.95)}
.btn-primary:hover{background:var(--brand-2);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-dark{background:var(--ink);color:#fff}
.btn-dark:hover{background:#16304a;transform:translateY(-1px)}
.btn-line{background:#fff;color:var(--brand);border-color:#bfe3dc}
.btn-line:hover{background:var(--brand-soft);transform:translateY(-1px)}
.btn-sm{padding:9px 16px;font-size:14px;border-radius:9px}

/* ---------- article head ---------- */
.article-head{
  position:relative;overflow:hidden;color:#e8f1f6;
  background:
    radial-gradient(760px 380px at 84% -20%,rgba(19,160,141,.30),transparent 70%),
    radial-gradient(620px 340px at 6% 120%,rgba(37,99,235,.18),transparent 72%),
    linear-gradient(160deg,#0b1524 0%,#0e2334 58%,#0c3236 100%);
  padding:38px 0 46px;
}
.article-head::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.5),transparent 80%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.5),transparent 80%);
}
.article-head .wrap{position:relative;z-index:2}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:#8ba3b3;margin-bottom:18px}
.breadcrumb a{color:#b9cdd9;transition:color .2s}
.breadcrumb a:hover{color:#7ff0d9}
.breadcrumb .sep{color:#5b7484}
.article-title{
  font-size:clamp(1.35rem,2.6vw,2rem);
  color:#fff;line-height:1.55;letter-spacing:.3px;max-width:940px;font-weight:800;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 16px;margin-top:18px;font-size:13px;color:#9db4c2}
.tag-pill{
  background:rgba(19,160,141,.18);border:1px solid rgba(127,240,217,.32);color:#7ff0d9;
  border-radius:999px;padding:4px 12px;font-size:12.5px;font-weight:600;
}
.article-lead{max-width:860px;margin-top:16px;font-size:15px;line-height:1.95;color:#b9cdd9}

/* ---------- sections ---------- */
.section{padding:56px 0}
.section-tint{background:#eef3f8}
.section-head{max-width:820px;margin-bottom:28px}
.eyebrow{
  display:inline-block;font-size:12px;letter-spacing:2px;color:var(--brand);
  background:var(--brand-soft);border-radius:999px;padding:5px 13px;margin-bottom:12px;font-weight:600;
}
.section-head h2{font-size:clamp(1.22rem,2.1vw,1.62rem);letter-spacing:.3px;margin-bottom:10px;color:var(--ink);font-weight:800}
.section-head p{color:var(--muted);font-size:15px;line-height:1.9}

/* ---------- article layout ---------- */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:32px;align-items:start}
.panel{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:30px}
.article-body{font-size:16.5px;line-height:2;color:#26313d;min-width:0}
.article-body h2{font-size:1.32rem;font-weight:800;color:var(--ink);margin:2em 0 .8em;padding-left:14px;border-left:4px solid var(--brand);line-height:1.5}
.article-body h3{font-size:1.1rem;font-weight:700;color:var(--ink);margin:1.7em 0 .6em;line-height:1.6}
.article-body h4{font-size:1rem;font-weight:700;color:var(--ink-soft);margin:1.4em 0 .5em}
.article-body p{margin:0 0 1.05em}
.article-body ul,.article-body ol{margin:0 0 1.1em;padding-left:1.35em}
.article-body li{margin-bottom:.45em}
.article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--brand-2)}
.article-body img{border-radius:var(--radius-sm);margin:1.2em 0;box-shadow:var(--shadow)}
.article-body blockquote{
  margin:1.2em 0;padding:14px 18px;background:var(--brand-soft);
  border-left:3px solid var(--brand);border-radius:8px;color:#1f4a45;font-size:15.5px;
}
.article-body table{width:100%;border-collapse:collapse;margin:1.2em 0;font-size:14.5px}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 12px;text-align:left}
.article-body th{background:#f3f7fa;font-weight:700;color:var(--ink-soft)}
.article-body pre{overflow-x:auto;background:#0b1524;color:#dfeaf1;padding:14px;border-radius:10px;font-size:14px}
.article-empty{text-align:center;padding:24px 10px 10px}
.article-empty h2{font-size:1.2rem;font-weight:800;color:var(--ink);margin-bottom:18px;border:0;padding:0}
.article-empty .btn{margin-top:8px}

/* ---------- sidebar ---------- */
.side-col{display:flex;flex-direction:column;gap:20px;min-width:0}
.side-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px}
.side-card h3{font-size:15px;font-weight:800;color:var(--ink);margin-bottom:14px;letter-spacing:.3px}
.side-list{list-style:none;padding:0;margin:0}
.side-list li{
  font-size:14px;color:#3b4c5c;padding:9px 0 9px 18px;position:relative;border-bottom:1px dashed var(--line-soft);line-height:1.7;
}
.side-list li:last-child{border-bottom:0;padding-bottom:0}
.side-list li::before{
  content:"";position:absolute;left:0;top:16px;width:7px;height:7px;border-radius:50%;
  background:var(--brand-2);box-shadow:0 0 0 3px rgba(19,160,141,.14);
}
.side-note{background:linear-gradient(150deg,#0b1524,#123040);color:#c7dbe6;border-color:transparent}
.side-note h3{color:#fff}
.side-note p{font-size:13.5px;line-height:1.95;color:#a9c1cf}
.side-note .side-em{color:#7ff0d9;font-weight:700}

/* ---------- generic cards ---------- */
.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.rule-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;box-shadow:var(--shadow);min-width:0;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.rule-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#cfe3ee}
.rule-card .rc-idx{
  display:inline-flex;align-items:center;justify-content:center;
  width:32px;height:32px;border-radius:9px;background:var(--brand-soft);color:var(--brand);
  font-weight:800;font-size:14px;margin-bottom:14px;
}
.rule-card h3{font-size:16px;font-weight:800;color:var(--ink);margin-bottom:8px}
.rule-card p{font-size:14px;color:var(--muted);line-height:1.85}

/* ---------- steps ---------- */
.step-list{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:16px;counter-reset:step}
.step-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);
  padding:20px 18px;box-shadow:var(--shadow);min-width:0;position:relative;
  transition:border-color .2s ease,transform .2s ease;
}
.step-item:hover{border-color:#bfe3dc;transform:translateY(-2px)}
.step-item .si-idx{
  display:block;font-size:12px;letter-spacing:1px;color:var(--brand);font-weight:700;margin-bottom:10px;
}
.step-item h3{font-size:15px;font-weight:800;color:var(--ink);margin-bottom:8px}
.step-item p{font-size:13.5px;color:var(--muted);line-height:1.85}

/* ---------- faq ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);
  padding:0 20px;box-shadow:var(--shadow);transition:border-color .2s ease;
}
.faq-item[open]{border-color:#b8e3db;background:#fcfefd}
.faq-item summary{
  list-style:none;cursor:pointer;padding:18px 32px 18px 0;position:relative;
  font-size:15.5px;font-weight:700;color:var(--ink);line-height:1.7;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";position:absolute;right:0;top:16px;font-size:20px;line-height:1;color:var(--brand);font-weight:600;
  transition:transform .2s ease;
}
.faq-item[open] summary::after{content:"−"}
.faq-item .faq-body{padding:0 0 20px;font-size:14.5px;color:#43536a;line-height:1.95}

/* ---------- download ---------- */
.dl-band{
  position:relative;overflow:hidden;color:#e8f1f6;border-radius:22px;
  background:
    radial-gradient(620px 300px at 88% 0%,rgba(19,160,141,.34),transparent 72%),
    linear-gradient(150deg,#0b1524,#10333a);
  padding:40px 36px;box-shadow:0 24px 48px -30px rgba(11,21,36,.9);
}
.dl-band h2{font-size:clamp(1.2rem,2vw,1.55rem);color:#fff;font-weight:800;margin-bottom:10px}
.dl-band p{font-size:14.5px;color:#aec6d4;line-height:1.95;max-width:660px}
.dl-buttons{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
.dl-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:12px;font-size:15px;font-weight:700;
  background:rgba(255,255,255,.10);color:#eaf6fb;border:1px solid rgba(255,255,255,.26);
  transition:all .22s ease;min-width:150px;
}
.dl-btn:hover{background:rgba(255,255,255,.2);color:#fff;transform:translateY(-2px)}
.dl-btn.is-main{background:var(--brand);border-color:transparent;color:#fff;box-shadow:0 14px 30px -18px rgba(19,160,141,.95)}
.dl-btn.is-main:hover{background:var(--brand-2)}
.dl-note{margin-top:18px;font-size:12.5px;color:#8fa8b8;line-height:1.8}

/* ---------- footer ---------- */
.site-footer{background:#0b1524;color:#a9bccb;padding:52px 0 24px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px}
.footer-brand .brand-name{font-size:17px;font-weight:800;color:#fff;max-width:none;white-space:normal;line-height:1.6}
.footer-brand p{font-size:13.5px;line-height:1.95;color:#8ba0b2;margin-top:12px;max-width:350px}
.footer-col h4{color:#fff;font-size:14px;margin:0 0 14px;font-weight:700;letter-spacing:.5px}
.footer-col a,.footer-col span{display:block;font-size:13.5px;color:#9db1c1;padding:5px 0;transition:color .2s ease}
.footer-col a:hover{color:#7ff0d9}
.friend-links{margin-top:34px;padding-top:24px;border-top:1px solid rgba(255,255,255,.1)}
.friend-links h4{color:#fff;font-size:14px;margin:0 0 12px;font-weight:700}
.friend-links .links{display:flex;flex-wrap:wrap;gap:8px 18px}
.friend-links a{font-size:13px;color:#93a8b8;transition:color .2s ease}
.friend-links a:hover{color:#7ff0d9}
.footer-bottom{
  margin-top:26px;padding-top:18px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
  font-size:12.5px;color:#7b8fa0;line-height:1.9;
}

/* ---------- responsive ---------- */
@media (max-width:1080px){
  .article-layout{grid-template-columns:minmax(0,1fr)}
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .step-list{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:960px){
  .nav-main{
    position:absolute;top:100%;left:0;right:0;display:none;
    flex-direction:column;align-items:stretch;gap:2px;
    background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--shadow);
    padding:10px 16px;margin-left:0;
  }
  .nav-main.is-open{display:flex}
  .nav-main a{padding:10px 12px}
  .menu-toggle{display:inline-flex}
  .search-form{display:none}
  .nav-top{gap:10px}
  .brand-name{max-width:170px;font-size:14px}
}
@media (max-width:768px){
  .section{padding:44px 0}
  .article-head{padding:26px 0 34px}
  .panel{padding:20px}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid-2{grid-template-columns:minmax(0,1fr)}
  .dl-band{padding:30px 22px;border-radius:18px}
  .article-body{font-size:16px;line-height:1.95}
  .article-body table{display:block;overflow-x:auto;white-space:nowrap}
}
@media (max-width:560px){
  .wrap{padding:0 16px}
  .grid-4,.grid-3,.step-list{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:minmax(0,1fr)}
  .btn-dl{display:none}
  .dl-btn{width:100%}
  .dl-buttons{width:100%}
  .article-title{font-size:1.25rem}
  .faq-item{padding:0 16px}
  .brand-name{max-width:150px}
  .footer-bottom{justify-content:flex-start}
}

/* roulang page: category1 */
:root{
  --ink:#0b1524;
  --ink-soft:#14283c;
  --brand:#0f7a6c;
  --brand-2:#13a08d;
  --brand-soft:#e6f5f2;
  --gold:#c2903a;
  --bg:#f5f7fa;
  --card:#ffffff;
  --line:#e2e8f0;
  --line-soft:#eef2f7;
  --text:#1b2733;
  --muted:#5c6c7d;
  --radius:16px;
  --radius-sm:10px;
  --shadow:0 1px 2px rgba(15,35,55,.05),0 12px 28px -18px rgba(15,35,55,.28);
  --shadow-hover:0 2px 4px rgba(15,35,55,.06),0 22px 40px -22px rgba(15,35,55,.36);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
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(--text);
  line-height:1.75;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer}
h1,h2,h3,h4{margin:0 0 .6em;line-height:1.36;color:#0f1d2b;font-weight:800}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.94);
  backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid var(--line);
}
.nav-top{display:flex;align-items:center;gap:18px;height:68px}
.brand{display:flex;align-items:center;gap:10px;min-width:0;flex-shrink:0}
.brand-mark{
  width:38px;height:38px;border-radius:10px;flex-shrink:0;
  background:linear-gradient(150deg,#0f7a6c,#0b3b47);
  color:#7ff0d9;display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:15px;letter-spacing:.5px;
  box-shadow:0 6px 16px -8px rgba(15,122,108,.9);
}
.brand-text{display:flex;flex-direction:column;min-width:0}
.brand-name{font-size:15px;font-weight:800;letter-spacing:.2px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:260px}
.brand-sub{font-size:11px;color:var(--muted);letter-spacing:2px;line-height:1.2}
.nav-main{display:flex;align-items:center;gap:4px;margin-left:8px}
.nav-main a{
  padding:8px 13px;border-radius:9px;font-size:14.5px;color:#33475b;font-weight:500;
  transition:background .2s ease,color .2s ease;
}
.nav-main a:hover{background:var(--brand-soft);color:var(--brand)}
.nav-main a.is-active{background:var(--brand);color:#fff;font-weight:600}
.nav-main a.is-active:hover{background:var(--brand-2);color:#fff}
.nav-tools{display:flex;align-items:center;gap:10px;margin-left:auto}
.search-form{display:flex;align-items:center;background:#f1f5f9;border:1px solid var(--line);border-radius:10px;padding:4px 6px 4px 10px;transition:border-color .2s,box-shadow .2s}
.search-form:focus-within{border-color:var(--brand-2);box-shadow:0 0 0 3px rgba(19,160,141,.14);background:#fff}
.search-form input{border:0;background:transparent;outline:none;font-size:13.5px;width:132px;color:var(--text)}
.search-form button{border:0;background:var(--brand);color:#fff;border-radius:7px;padding:5px 11px;font-size:13px;transition:background .2s}
.search-form button:hover{background:var(--brand-2)}
.btn-dl{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--ink);color:#fff;padding:9px 16px;border-radius:10px;
  font-size:14px;font-weight:600;white-space:nowrap;
  transition:background .2s ease,transform .2s ease,box-shadow .2s ease;
}
.btn-dl:hover{background:#16304a;transform:translateY(-1px);box-shadow:0 10px 22px -14px rgba(11,21,36,.9)}
.menu-toggle{display:none;border:1px solid var(--line);background:#fff;border-radius:9px;padding:7px 12px;color:#33475b;font-size:14px}
.nav-channels{border-top:1px solid var(--line-soft);background:#fbfcfe}
.nav-channels .wrap{display:flex;align-items:center;gap:14px;height:44px;overflow:hidden}
.chn-list{display:flex;align-items:center;gap:6px;overflow-x:auto;scrollbar-width:none}
.chn-list::-webkit-scrollbar{display:none}
.chn-list a,.chn-list span.chn-label{
  font-size:13px;color:#4a5d70;padding:4px 10px;border-radius:999px;white-space:nowrap;
  background:#fff;border:1px solid var(--line);transition:all .2s ease;
}
.chn-list span.chn-label{background:var(--brand-soft);color:var(--brand);border-color:#c6e8e1;font-weight:600}
.chn-list a:hover{color:var(--brand);border-color:#b8e3db;background:var(--brand-soft)}
.chn-list a:focus-visible{outline:2px solid rgba(19,160,141,.5);outline-offset:2px}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:11px;font-size:15px;font-weight:600;
  border:1px solid transparent;transition:all .22s ease;text-align:center;
}
.btn:focus-visible{outline:3px solid rgba(19,160,141,.45);outline-offset:2px}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 12px 26px -16px rgba(15,122,108,.95)}
.btn-primary:hover{background:var(--brand-2);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:rgba(255,255,255,.06);color:#d9ecf3;border-color:rgba(255,255,255,.28)}
.btn-ghost:hover{background:rgba(255,255,255,.14);color:#fff}
.btn-line{background:#fff;color:var(--brand);border-color:#bfe3dc}
.btn-line:hover{background:var(--brand-soft)}

/* ---------- hero ---------- */
.hero{
  position:relative;overflow:hidden;color:#e8f1f6;
  background:
    radial-gradient(900px 420px at 82% -10%,rgba(19,160,141,.32),transparent 70%),
    radial-gradient(700px 400px at 8% 110%,rgba(37,99,235,.20),transparent 72%),
    linear-gradient(160deg,#0b1524 0%,#0e2334 58%,#0c3236 100%);
  padding:54px 0 58px;
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.55),transparent 78%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.55),transparent 78%);
}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,1.12fr) minmax(0,.88fr);gap:44px;align-items:center}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;letter-spacing:2px;color:#7ff0d9;
  border:1px solid rgba(127,240,217,.34);background:rgba(19,160,141,.14);
  padding:6px 14px;border-radius:999px;margin-bottom:20px;
}
.hero h1{font-size:clamp(1.55rem,3.5vw,2.35rem);color:#fff;letter-spacing:.4px;margin-bottom:18px}
.hero-lead{font-size:16px;line-height:1.95;color:#b9cdd9;max-width:640px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-panel{
  background:rgba(255,255,255,.065);
  border:1px solid rgba(255,255,255,.16);
  border-radius:18px;
  padding:22px;
  backdrop-filter:blur(8px);
  box-shadow:0 30px 60px -40px rgba(0,0,0,.9);
  min-width:0;
}
.hero-panel h2{font-size:15px;color:#fff;letter-spacing:.5px;margin-bottom:16px;font-weight:700}
.check-list{display:grid;gap:14px}
.check-list li{display:grid;grid-template-columns:38px minmax(0,1fr);gap:12px;align-items:start;min-width:0}
.check-num{
  width:38px;height:38px;border-radius:11px;
  background:rgba(19,160,141,.22);border:1px solid rgba(127,240,217,.3);
  color:#7ff0d9;display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:800;
}
.check-list strong{display:block;font-size:14.5px;color:#eaf5f8;margin-bottom:2px;font-weight:700}
.check-list span.txt{display:block;font-size:13px;color:#9fb6c4;line-height:1.65}

/* ---------- sections ---------- */
.section{padding:64px 0}
.section-alt{background:#eef3f8}
.section-dark{background:var(--ink);color:#dfeaf1}
.section-dark h2,.section-dark h3{color:#fff}
.section-head{max-width:840px;margin-bottom:32px}
.eyebrow{
  display:inline-block;font-size:12px;letter-spacing:2px;color:var(--brand);
  background:var(--brand-soft);border-radius:999px;padding:5px 13px;margin-bottom:14px;font-weight:600;
}
.section-head h2{font-size:clamp(1.28rem,2.2vw,1.72rem);margin-bottom:12px;letter-spacing:.3px}
.section-head p{color:var(--muted);font-size:15.5px}
.section-dark .section-head p{color:#a9bfcd}

/* ---------- grids & cards ---------- */
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.grid-2>*,.grid-3>*,.grid-4>*{min-width:0}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;box-shadow:var(--shadow);min-width:0;
  transition:box-shadow .25s ease,transform .25s ease,border-color .25s ease;
}
.card:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);border-color:#cfe0ec}
.card h3{font-size:16.5px;margin-bottom:10px}
.card p{color:var(--muted);font-size:14.5px;line-height:1.8}
.card-ico{
  width:42px;height:42px;border-radius:12px;background:var(--brand-soft);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-weight:800;font-size:13px;
  margin-bottom:16px;letter-spacing:.5px;
}
.tag{display:inline-flex;align-items:center;font-size:12px;padding:3px 10px;border-radius:999px;background:var(--brand-soft);color:var(--brand);font-weight:600}
.tag-gold{background:#fbf3e3;color:#9a6c1d}

/* ---------- table ---------- */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius-sm);background:#fff;box-shadow:var(--shadow)}
table.calc-table{width:100%;border-collapse:collapse;min-width:520px;font-size:14.5px}
.calc-table th,.calc-table td{padding:13px 16px;border-bottom:1px solid var(--line-soft);text-align:left;white-space:nowrap}
.calc-table th{background:#f7fafc;font-weight:700;color:#0f1d2b;font-size:14px}
.calc-table td{color:#3a4c5e}
.calc-table tr:last-child td{border-bottom:0}
.calc-table tbody tr:hover td{background:#fafcfe}
.note{font-size:13px;color:var(--muted);margin-top:12px;line-height:1.7}

/* ---------- steps ---------- */
.steps{display:grid;gap:14px}
.step{
  display:grid;grid-template-columns:44px minmax(0,1fr);gap:16px;align-items:start;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);
  padding:18px 20px;min-width:0;box-shadow:var(--shadow);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.step:hover{border-color:#cfe0ec;box-shadow:var(--shadow-hover)}
.step-num{
  width:44px;height:44px;border-radius:12px;background:var(--brand-soft);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-weight:800;font-size:15px;
}
.step h3{font-size:16px;margin-bottom:6px}
.step p{color:var(--muted);font-size:14.5px}

/* ---------- checklist ---------- */
.check-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.check-item{
  display:grid;grid-template-columns:26px minmax(0,1fr);gap:12px;align-items:start;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);
  padding:16px 18px;min-width:0;
}
.check-box{
  width:22px;height:22px;border-radius:7px;border:2px solid #b8e3db;background:var(--brand-soft);
  display:flex;align-items:center;justify-content:center;color:var(--brand);font-size:12px;font-weight:800;
  margin-top:3px;
}
.check-item strong{display:block;font-size:15px;margin-bottom:4px;color:#0f1d2b}
.check-item p{color:var(--muted);font-size:14px;margin:0}

/* ---------- faq ---------- */
.faq-list{display:grid;gap:12px;max-width:940px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);box-shadow:var(--shadow);overflow:hidden}
.faq-item summary{
  list-style:none;cursor:pointer;padding:17px 20px;font-weight:700;font-size:15.5px;color:#0f1d2b;
  display:flex;align-items:center;justify-content:space-between;gap:14px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";flex-shrink:0;width:24px;height:24px;border-radius:8px;background:var(--brand-soft);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:700;transition:transform .2s ease;
}
.faq-item[open] summary::after{content:"−";transform:rotate(180deg)}
.faq-item summary:focus-visible{outline:3px solid rgba(19,160,141,.4);outline-offset:-3px}
.faq-body{padding:0 20px 18px;color:var(--muted);font-size:14.5px;line-height:1.85}

/* ---------- posts ---------- */
.post-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.post-card{
  display:flex;flex-direction:column;gap:10px;min-width:0;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:22px;box-shadow:var(--shadow);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.post-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#cfe0ec}
.post-card:focus-visible{outline:3px solid rgba(19,160,141,.4);outline-offset:2px}
.post-card h3{font-size:16px;margin:0;line-height:1.55;color:#0f1d2b}
.post-card p{color:var(--muted);font-size:14px;margin:0;line-height:1.75}
.post-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:auto;font-size:12.5px;color:#8395a5}
.post-empty{color:var(--muted);font-size:14.5px;background:#fff;border:1px dashed var(--line);border-radius:var(--radius-sm);padding:22px;text-align:center}

/* ---------- download ---------- */
.dl-band{
  background:linear-gradient(160deg,#0b1524 0%,#0e2334 60%,#0c3236 100%);
  color:#dfeaf1;border-radius:20px;padding:38px 34px;position:relative;overflow:hidden;
}
.dl-band::after{
  content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(19,160,141,.35),transparent 70%);
}
.dl-band h2{color:#fff;font-size:clamp(1.2rem,2.2vw,1.6rem);margin-bottom:10px}
.dl-band p{color:#a9bfcd;font-size:15px;max-width:700px}
.dl-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-top:26px;position:relative;z-index:2}
.dl-card{
  display:flex;flex-direction:column;gap:6px;min-width:0;
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.18);
  border-radius:14px;padding:18px 20px;transition:all .22s ease;
}
.dl-card:hover{background:rgba(19,160,141,.22);border-color:rgba(127,240,217,.5);transform:translateY(-2px)}
.dl-card:focus-visible{outline:3px solid rgba(127,240,217,.55);outline-offset:2px}
.dl-ic{
  width:40px;height:40px;border-radius:11px;background:rgba(127,240,217,.16);
  border:1px solid rgba(127,240,217,.3);color:#7ff0d9;
  display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:800;letter-spacing:.5px;
  margin-bottom:6px;
}
.dl-name{font-size:15.5px;font-weight:700;color:#fff}
.dl-file{font-size:12.5px;color:#93aabb;letter-spacing:.4px}
.dl-tip{font-size:13px;color:#8fa6b6;margin-top:20px;position:relative;z-index:2}

/* ---------- footer ---------- */
.site-footer{background:#08111c;color:#8ea4b4;padding:52px 0 26px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;min-width:0}
.footer-brand .brand-name{font-size:15.5px;font-weight:800;color:#fff;margin-bottom:12px;white-space:normal;max-width:none}
.footer-brand p{font-size:13.5px;line-height:1.85;color:#8ea4b4;margin:0;max-width:420px}
.footer-col{min-width:0}
.footer-col h4{font-size:13.5px;color:#fff;margin-bottom:14px;font-weight:700;letter-spacing:.5px}
.footer-col a,.footer-col span{display:block;font-size:13.5px;color:#8ea4b4;padding:4px 0;transition:color .2s ease}
.footer-col a:hover{color:#7ff0d9}
.friend-links{margin-top:34px;padding-top:24px;border-top:1px solid rgba(255,255,255,.08)}
.friend-links h4{font-size:13.5px;color:#fff;margin-bottom:12px;font-weight:700;letter-spacing:.5px}
.friend-links .links{display:flex;flex-wrap:wrap;gap:8px}
.friend-links .links a{
  font-size:13px;color:#9fb6c4;background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.1);border-radius:999px;padding:5px 13px;
  transition:all .2s ease;
}
.friend-links .links a:hover{color:#7ff0d9;border-color:rgba(127,240,217,.45);background:rgba(19,160,141,.15)}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  margin-top:30px;padding-top:18px;border-top:1px solid rgba(255,255,255,.08);
  font-size:12.5px;color:#6d8798;
}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .nav-main{
    display:none;position:absolute;left:0;right:0;top:68px;
    flex-direction:column;align-items:stretch;gap:2px;margin:0;
    background:#fff;padding:10px 16px 14px;border-bottom:1px solid var(--line);
    box-shadow:0 18px 30px -24px rgba(15,35,55,.5);z-index:80;
  }
  .nav-main.is-open{display:flex}
  .nav-main a{padding:11px 12px;font-size:15px}
  .menu-toggle{display:inline-flex;align-items:center}
  .search-form{display:none}
  .hero-grid{grid-template-columns:minmax(0,1fr);gap:32px}
  .hero-lead{max-width:none}
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .post-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px}
  .dl-band{padding:32px 24px}
}
@media (max-width:768px){
  .section{padding:48px 0}
  .hero{padding:42px 0 46px}
  .grid-2{grid-template-columns:minmax(0,1fr)}
  .grid-3{grid-template-columns:minmax(0,1fr)}
  .grid-4{grid-template-columns:minmax(0,1fr)}
  .post-grid{grid-template-columns:minmax(0,1fr)}
  .check-grid{grid-template-columns:minmax(0,1fr)}
  .dl-grid{grid-template-columns:minmax(0,1fr)}
  .brand-name{max-width:170px;font-size:14px}
  .btn-dl{padding:8px 12px;font-size:13px}
  .footer-grid{grid-template-columns:minmax(0,1fr)}
  .footer-bottom{flex-direction:column}
}
@media (max-width:520px){
  .wrap{padding:0 16px}
  .nav-top{gap:10px;height:62px}
  .nav-main{top:62px}
  .brand-sub{display:none}
  .brand-name{max-width:150px;font-size:13.5px}
  .hero-actions .btn{width:100%}
  .card,.step,.post-card{padding:18px}
  .dl-band{padding:26px 18px;border-radius:16px}
}