/* roulang page: index */
*{box-sizing:border-box;margin:0;padding:0}
:root{
  --brand-900:#0a1728;
  --brand-800:#102a46;
  --brand-700:#1a3category;
  --blue-600:#2563eb;
  --blue-500:#3b82f6;
  --blue-050:#eef4ff;
  --gold-400:#e6c982;
  --gold-500:#c9a227;
  --ink:#16202f;
  --muted:#5d6c80;
  --bg:#f5f8fc;
  --card:#ffffff;
  --line:#e4ebf5;
  --radius-lg:22px;
  --radius:14px;
  --radius-sm:10px;
  --shadow-sm:0 4px 14px rgba(16,35,60,.06);
  --shadow:0 14px 40px rgba(16,35,60,.10);
  --shadow-hover:0 22px 50px rgba(16,35,60,.16);
  --maxw:1180px;
}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  background:var(--bg);
  color:var(--ink);
  line-height:1.78;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
input{font:inherit}
h1,h2,h3,h4{line-height:1.4;font-weight:800;color:var(--ink)}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 22px}
.section{padding:68px 0}
.section--white{background:#fff}
.section--tight{padding:52px 0}
.sec-head{max-width:760px;margin-bottom:34px}
.sec-tag{display:inline-block;font-size:13px;letter-spacing:.08em;color:var(--blue-600);background:var(--blue-050);border-radius:999px;padding:5px 14px;font-weight:600;margin-bottom:14px}
.sec-head h2{font-size:clamp(22px,2.4vw,30px);margin-bottom:12px}
.sec-head p{color:var(--muted);font-size:15.5px}
.sec-head--center{margin-left:auto;margin-right:auto;text-align:center}

/* ============ header ============ */
.site-header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.94);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);box-shadow:0 2px 16px rgba(16,35,60,.05)}
.nav-bar{display:grid;grid-template-columns:auto minmax(220px,1fr) auto;align-items:center;gap:24px;padding:12px 0}
.brand{display:flex;align-items:center;gap:11px;min-width:0}
.brand-mark{width:42px;height:42px;border-radius:13px;background:linear-gradient(140deg,#1f4f8f,#2563eb);color:#fff;display:grid;place-items:center;font-weight:800;font-size:19px;box-shadow:0 8px 18px rgba(37,99,235,.28);flex:0 0 auto}
.brand-text{display:flex;flex-direction:column;line-height:1.25;min-width:0}
.brand-text strong{font-size:17px;color:var(--ink);letter-spacing:.02em}
.brand-text em{font-style:normal;font-size:12px;color:var(--muted);letter-spacing:.04em}
.nav-search{display:flex;align-items:center;gap:8px;background:#f1f5fb;border:1px solid var(--line);border-radius:999px;padding:5px 5px 5px 16px;min-width:0;transition:border-color .2s,box-shadow .2s}
.nav-search:focus-within{border-color:#bcd0f5;box-shadow:0 0 0 4px rgba(37,99,235,.10);background:#fff}
.nav-search .search-ico{flex:0 0 auto;color:#8b9bb2;font-size:14px}
.nav-search input{flex:1 1 auto;min-width:0;border:0;background:transparent;outline:none;font-size:14px;color:var(--ink);padding:7px 0}
.nav-search input::placeholder{color:#9aa9be}
.nav-search button{flex:0 0 auto;border-radius:999px;background:var(--blue-600);color:#fff;padding:8px 20px;font-size:14px;font-weight:600;transition:background .2s,transform .2s}
.nav-search button:hover{background:#1d4fd0}
.nav-search button:active{transform:scale(.97)}
.nav-links{display:flex;align-items:center;gap:6px}
.nav-links a{padding:9px 15px;border-radius:999px;font-size:15px;color:#33455d;white-space:nowrap;transition:background .2s,color .2s}
.nav-links a:hover{background:#eff4fc;color:var(--blue-600)}
.nav-links a.is-active{background:var(--blue-050);color:var(--blue-600);font-weight:700}
.nav-links a.nav-cta{background:linear-gradient(135deg,#2563eb,#3b82f6);color:#fff;font-weight:700;box-shadow:0 8px 20px rgba(37,99,235,.28)}
.nav-links a.nav-cta:hover{transform:translateY(-1px);box-shadow:0 12px 26px rgba(37,99,235,.34);color:#fff}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid rgba(37,99,235,.45);outline-offset:2px;border-radius:8px}

/* ============ hero ============ */
.hero{
  position:relative;overflow:hidden;color:#eef3fb;
  background:
    radial-gradient(circle at 80% 12%,rgba(230,201,130,.20),transparent 46%),
    radial-gradient(circle at 8% 92%,rgba(59,130,246,.24),transparent 48%),
    linear-gradient(135deg,#0a1728 0%,#122a46 56%,#1b3856 100%);
  padding:58px 0 66px;
}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.12fr) minmax(0,.88fr);gap:46px;align-items:center}
.hero-eyebrow{display:inline-flex;align-items:center;gap:9px;border:1px solid rgba(230,201,130,.45);color:var(--gold-400);border-radius:999px;padding:6px 15px;font-size:13px;letter-spacing:.05em}
.hero-eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--gold-400);display:inline-block}
.hero h1{font-size:clamp(26px,3.1vw,39px);line-height:1.34;color:#fff;margin:18px 0 16px;letter-spacing:.01em}
.hero-lead{color:#c2d2e6;font-size:15.8px;max-width:660px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.btn-gold{display:inline-flex;align-items:center;gap:8px;background:linear-gradient(135deg,#e6c982,#c9a227);color:#1d1606;font-weight:700;padding:13px 27px;border-radius:12px;box-shadow:0 12px 28px rgba(201,162,39,.28);transition:transform .2s,box-shadow .2s}
.btn-gold:hover{transform:translateY(-2px);box-shadow:0 18px 34px rgba(201,162,39,.36)}
.btn-ghost{display:inline-flex;align-items:center;gap:8px;border:1px solid rgba(255,255,255,.34);color:#e8eefb;padding:13px 25px;border-radius:12px;transition:background .2s,border-color .2s}
.btn-ghost:hover{background:rgba(255,255,255,.09);border-color:rgba(255,255,255,.55)}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px 24px;margin-top:28px;color:#9db1ca;font-size:13.5px}
.hero-meta span{display:inline-flex;align-items:center;gap:7px}
.hero-meta span::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--gold-400);display:inline-block}
.vip-card{
  background:linear-gradient(160deg,#101d2e,#1b2f47 58%,#21384f);
  border:1px solid rgba(230,201,130,.28);border-radius:var(--radius-lg);
  padding:26px;box-shadow:0 30px 60px rgba(3,10,20,.45);
}
.vip-head{display:flex;align-items:center;gap:14px}
.vip-badge{width:56px;height:56px;border-radius:50%;flex:0 0 auto;background:linear-gradient(140deg,#f3dda6,#c9a227);color:#20180a;display:grid;place-items:center;font-weight:800;font-size:15px;letter-spacing:.04em;box-shadow:0 10px 24px rgba(201,162,39,.35);border:2px solid rgba(255,255,255,.35)}
.vip-title{font-size:16px;color:#fff;font-weight:700;line-height:1.4}
.vip-sub{font-size:12.5px;color:#93a7c1}
.vip-list{margin-top:20px;display:grid;gap:10px}
.vip-row{display:flex;align-items:center;gap:12px;background:rgba(255,255,255,.045);border:1px solid rgba(255,255,255,.08);border-radius:12px;padding:11px 13px;font-size:14px;color:#dbe6f5;min-width:0}
.vip-row b{flex:0 0 auto;width:38px;height:24px;border-radius:6px;background:rgba(230,201,130,.16);color:var(--gold-400);font-size:11.5px;display:grid;place-items:center;letter-spacing:.04em}
.vip-row span{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.vip-tag{margin-left:auto;font-size:12px;color:var(--gold-400);white-space:nowrap}
.vip-btn{display:block;text-align:center;margin-top:18px;background:linear-gradient(135deg,#e6c982,#c9a227);color:#1d1606;font-weight:700;padding:12px;border-radius:12px;transition:transform .2s,box-shadow .2s}
.vip-btn:hover{transform:translateY(-1px);box-shadow:0 14px 28px rgba(201,162,39,.32)}
.vip-note{margin-top:12px;font-size:12px;color:#8ea2bc;line-height:1.65}

/* ============ download ============ */
.dl-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.dl-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);padding:28px 26px;box-shadow:var(--shadow-sm);transition:transform .22s,box-shadow .22s,border-color .22s;min-width:0}
.dl-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#d5e2f6}
.dl-icon{width:48px;height:48px;border-radius:15px;background:var(--blue-050);color:var(--blue-600);display:grid;place-items:center;font-weight:800;font-size:14px;letter-spacing:.02em;margin-bottom:16px}
.dl-card h3{font-size:18px;margin-bottom:8px}
.dl-card p{color:var(--muted);font-size:14.6px;min-height:52px}
.dl-file{margin-top:14px;font-size:12.5px;color:#8798ae;letter-spacing:.02em}
.dl-btn{display:block;text-align:center;margin-top:18px;padding:12px;border-radius:11px;background:var(--blue-600);color:#fff;font-weight:700;font-size:15px;transition:background .2s,transform .2s,box-shadow .2s}
.dl-btn:hover{background:#1d4fd0;transform:translateY(-1px);box-shadow:0 12px 24px rgba(37,99,235,.26)}
.dl-btn.is-gold{background:linear-gradient(135deg,#e6c982,#c9a227);color:#1d1606}
.dl-btn.is-gold:hover{background:linear-gradient(135deg,#edd697,#c9a227);box-shadow:0 12px 24px rgba(201,162,39,.3)}
.dl-tip{margin-top:22px;font-size:13.5px;color:#7c8da4;background:#fff;border:1px dashed #d6e2f4;border-radius:var(--radius);padding:14px 18px}

/* ============ metrics ============ */
.metric-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.metric{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px 20px;box-shadow:var(--shadow-sm);min-width:0;transition:transform .2s,box-shadow .2s}
.metric:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.metric .m-label{font-size:12.5px;color:#8b9bb2;letter-spacing:.06em}
.metric .m-value{font-size:19px;font-weight:800;margin:6px 0 6px;color:var(--brand-800)}
.metric .m-desc{font-size:13.5px;color:var(--muted)}

/* ============ capability ============ */
.cap-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.cap-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 24px;box-shadow:var(--shadow-sm);min-width:0;transition:transform .22s,box-shadow .22s,border-color .22s}
.cap-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#d5e2f6}
.cap-dot{width:36px;height:36px;border-radius:11px;background:linear-gradient(135deg,#e8f0ff,#d8e6ff);color:var(--blue-600);display:grid;place-items:center;font-weight:800;font-size:14px;margin-bottom:14px}
.cap-card h3{font-size:17px;margin-bottom:8px}
.cap-card p{color:var(--muted);font-size:14.5px}

/* ============ spec table ============ */
.table-wrap{overflow-x:auto;border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);background:#fff}
.spec-table{width:100%;min-width:660px;border-collapse:collapse;font-size:14.8px}
.spec-table thead th{background:#f2f7ff;color:var(--brand-800);font-weight:800;text-align:left;padding:15px 18px;border-bottom:1px solid var(--line);white-space:nowrap}
.spec-table tbody td{padding:15px 18px;border-bottom:1px solid #eef3fa;color:#3d4e66;vertical-align:top}
.spec-table tbody tr:last-child td{border-bottom:0}
.spec-table tbody tr:hover{background:#fafcff}
.spec-table td:first-child{font-weight:700;color:var(--ink);white-space:nowrap}
.spec-badge{display:inline-block;font-size:12px;color:var(--blue-600);background:var(--blue-050);border-radius:6px;padding:2px 9px;font-weight:600}

/* ============ scenes ============ */
.scene-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.scene-card{background:#fff;border-radius:var(--radius-lg);padding:0;overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-sm);min-width:0;transition:transform .22s,box-shadow .22s}
.scene-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.scene-head{height:104px;display:flex;align-items:flex-end;padding:18px 22px;background:linear-gradient(135deg,#1c3a5c,#2563eb);color:#fff}
.scene-head.alt-a{background:linear-gradient(135deg,#173654,#2f7ad1)}
.scene-head.alt-b{background:linear-gradient(135deg,#1f2f45,#4a6fa8)}
.scene-head span{font-size:13px;letter-spacing:.06em;opacity:.85}
.scene-body{padding:20px 22px 24px}
.scene-body h3{font-size:16.5px;margin-bottom:8px}
.scene-body p{color:var(--muted);font-size:14.5px}

/* ============ split ============ */
.split{display:grid;grid-template-columns:minmax(0,.92fr) minmax(0,1.08fr);gap:44px;align-items:start}
.split h2{font-size:clamp(22px,2.3vw,29px);margin:12px 0 14px}
.split p{color:var(--muted);font-size:15.5px}
.dim-list{display:grid;gap:14px}
.dim-item{background:#fff;border:1px solid var(--line);border-left:3px solid var(--blue-500);border-radius:12px;padding:16px 20px;box-shadow:var(--shadow-sm);min-width:0;transition:transform .2s,box-shadow .2s}
.dim-item:hover{transform:translateX(3px);box-shadow:var(--shadow)}
.dim-item h4{font-size:15.5px;margin-bottom:5px}
.dim-item p{font-size:14px;color:var(--muted)}

/* ============ steps ============ */
.step-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.step{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px 22px;box-shadow:var(--shadow-sm);min-width:0;position:relative;transition:transform .22s,box-shadow .22s}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.step-no{width:34px;height:34px;border-radius:10px;background:var(--blue-600);color:#fff;display:grid;place-items:center;font-weight:800;font-size:14px;margin-bottom:14px}
.step h3{font-size:16px;margin-bottom:7px}
.step p{color:var(--muted);font-size:14.2px}

/* ============ guard ============ */
.guard-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.guard{display:flex;gap:16px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow-sm);min-width:0;transition:transform .2s,box-shadow .2s}
.guard:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.guard-ico{flex:0 0 auto;width:40px;height:40px;border-radius:12px;background:linear-gradient(135deg,#e8f0ff,#d5e4fb);color:var(--blue-600);display:grid;place-items:center;font-weight:800;font-size:15px}
.guard h3{font-size:16px;margin-bottom:6px}
.guard p{color:var(--muted);font-size:14.3px}

/* ============ news ============ */
.news-layout{display:grid;grid-template-columns:minmax(0,1.62fr) minmax(0,.88fr);gap:30px;align-items:start}
.news-list{display:grid;gap:14px}
.news-item{display:block;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px 24px;box-shadow:var(--shadow-sm);min-width:0;transition:transform .2s,box-shadow .2s,border-color .2s}
.news-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#d5e2f6}
.news-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:12.5px;color:#8b9bb2;margin-bottom:8px}
.news-cat{background:var(--blue-050);color:var(--blue-600);border-radius:6px;padding:2px 9px;font-weight:600}
.news-item h3{font-size:16.5px;margin-bottom:6px;overflow-wrap:break-word}
.news-item p{color:var(--muted);font-size:14.2px;overflow-wrap:break-word}
.news-empty{background:#fff;border:1px dashed #d6e2f4;border-radius:var(--radius);padding:34px 24px;text-align:center;color:#8497ae;font-size:14.5px}
.news-more{display:inline-flex;align-items:center;gap:6px;margin-top:18px;font-size:14.5px;font-weight:600;color:var(--blue-600);transition:gap .2s}
.news-more:hover{gap:11px}
.side-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:26px 24px;box-shadow:var(--shadow-sm);min-width:0}
.side-card + .side-card{margin-top:18px}
.side-card h3{font-size:16.5px;margin-bottom:10px}
.side-card p{color:var(--muted);font-size:14.2px}
.side-card .side-btn{display:block;text-align:center;margin-top:16px;padding:11px;border-radius:10px;background:var(--blue-600);color:#fff;font-weight:600;font-size:14.5px;transition:background .2s}
.side-card .side-btn:hover{background:#1d4fd0}
.side-note{font-size:13px;color:#8b9bb2;margin-top:12px;line-height:1.7}

/* ============ channels ============ */
.channel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.channel{display:block;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:26px 24px;box-shadow:var(--shadow-sm);min-width:0;transition:transform .22s,box-shadow .22s,border-color .22s}
.channel:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#cfe0f7}
.channel .ch-tag{font-size:12.5px;color:var(--blue-600);letter-spacing:.06em;font-weight:600}
.channel h3{font-size:17px;margin:8px 0 8px}
.channel p{color:var(--muted);font-size:14.2px}
.channel .ch-link{margin-top:14px;display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--blue-600)}

/* ============ objections ============ */
.obj-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.obj{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px 24px;box-shadow:var(--shadow-sm);min-width:0}
.obj h3{font-size:15.5px;color:#2b3c52;margin-bottom:8px;display:flex;gap:8px}
.obj h3::before{content:"问";flex:0 0 auto;width:22px;height:22px;border-radius:6px;background:#fdeeee;color:#c25b5b;font-size:12px;display:grid;place-items:center;font-weight:700;margin-top:2px}
.obj p{color:var(--muted);font-size:14.3px;padding-left:30px}

/* ============ faq ============ */
.faq-list{display:grid;gap:12px;max-width:900px;margin:0 auto}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:0 22px;box-shadow:var(--shadow-sm)}
.faq-item summary{list-style:none;cursor:pointer;padding:18px 0;font-weight:700;font-size:15.6px;display:flex;align-items:center;justify-content:space-between;gap:16px;color:#1f2c3d}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";flex:0 0 auto;width:26px;height:26px;border-radius:8px;background:var(--blue-050);color:var(--blue-600);display:grid;place-items:center;font-weight:700;font-size:16px;transition:background .2s}
.faq-item[open] summary::after{content:"−";background:var(--blue-600);color:#fff}
.faq-item p{padding:0 0 20px;color:var(--muted);font-size:14.6px;border-top:1px solid #f0f5fc;padding-top:14px}

/* ============ cta band ============ */
.cta-band{background:radial-gradient(circle at 84% 16%,rgba(230,201,130,.22),transparent 46%),linear-gradient(135deg,#0d1f34,#1a3a5e 60%,#22456b);border-radius:var(--radius-lg);padding:44px 42px;color:#e9f1fb;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:26px;box-shadow:0 26px 60px rgba(10,25,45,.28)}
.cta-band h2{color:#fff;font-size:clamp(21px,2.2vw,27px);margin-bottom:10px}
.cta-band p{color:#b9cbe2;font-size:15px;max-width:620px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
.cta-actions .btn-gold{padding:12px 22px;font-size:15px}
.cta-actions .btn-ghost{padding:12px 22px;font-size:15px}

/* ============ footer ============ */
.site-footer{background:#0b1a2b;color:#a9bcd3;padding:58px 0 26px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:34px}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:14px}
.footer-brand .brand-mark{box-shadow:none}
.footer-brand strong{color:#fff;font-size:17px}
.footer-text{font-size:14px;color:#8ea3bd;line-height:1.8;max-width:360px}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:14px;font-weight:700}
.footer-col a,.footer-col li{display:block;font-size:14px;color:#9db1c9;margin-bottom:9px;transition:color .2s}
.footer-col a:hover{color:#e6c982}
.friend-links{display:flex;flex-wrap:wrap;gap:10px 18px;margin-top:8px}
.friend-links a{display:inline-block;font-size:13.5px;color:#9db1c9;padding:4px 12px;border:1px solid rgba(255,255,255,.12);border-radius:999px;transition:color .2s,border-color .2s,background .2s}
.friend-links a:hover{color:#e6c982;border-color:rgba(230,201,130,.5);background:rgba(230,201,130,.08)}
.footer-risk{margin-top:36px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);font-size:13px;color:#7f95b0;line-height:1.8}
.footer-bottom{margin-top:16px;padding-top:16px;border-top:1px solid rgba(255,255,255,.08);display:flex;flex-wrap:wrap;gap:10px 22px;justify-content:space-between;font-size:13px;color:#7a90ab}

/* ============ responsive ============ */
@media (max-width:1024px){
  .hero-grid{grid-template-columns:minmax(0,1fr);gap:34px}
  .vip-card{max-width:560px}
  .dl-grid,.cap-grid,.scene-grid,.channel-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .metric-grid,.step-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .news-layout{grid-template-columns:minmax(0,1fr)}
  .split{grid-template-columns:minmax(0,1fr);gap:28px}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px}
  .section{padding:56px 0}
}
@media (max-width:960px){
  .nav-bar{grid-template-columns:minmax(0,1fr) auto;row-gap:10px}
  .brand{order:1;min-width:0}
  .nav-links{order:2;gap:4px;overflow-x:auto;white-space:nowrap;padding-bottom:2px;-webkit-overflow-scrolling:touch}
  .nav-search{order:3;grid-column:1 / -1}
  .nav-links::-webkit-scrollbar{height:0}
}
@media (max-width:768px){
  .guard-grid,.obj-grid{grid-template-columns:minmax(0,1fr)}
  .cta-band{padding:34px 26px}
  .hero{padding:44px 0 50px}
  .hero-meta{gap:8px 18px;font-size:13px}
  .section{padding:46px 0}
  .sec-head{margin-bottom:26px}
  .dl-card,.cap-card,.scene-card{padding-left:20px;padding-right:20px}
  .scene-card{padding:0}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:26px}
}
@media (max-width:560px){
  .dl-grid,.cap-grid,.scene-grid,.channel-grid,.metric-grid,.step-grid{grid-template-columns:minmax(0,1fr)}
  .container{padding:0 16px}
  .hero h1{font-size:24px}
  .hero-lead{font-size:15px}
  .btn-gold,.btn-ghost{padding:12px 20px;font-size:14.5px}
  .dl-card p{min-height:0}
  .spec-table{min-width:600px}
  .cta-actions{width:100%}
  .cta-actions .btn-gold,.cta-actions .btn-ghost{flex:1 1 100%;justify-content:center}
  .vip-card{padding:20px}
  .footer-bottom{font-size:12.5px}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important}
  html{scroll-behavior:auto}
}

/* roulang page: article */
:root{
  --brand-900:#0a1728;
  --brand-800:#102a46;
  --brand-700:#1a3a5c;
  --blue-600:#2563eb;
  --blue-500:#3b82f6;
  --blue-050:#eef4ff;
  --gold-400:#e6c982;
  --gold-500:#c9a227;
  --ink:#16202f;
  --muted:#5d6c80;
  --bg:#f5f8fc;
  --card:#ffffff;
  --line:#e4ebf5;
  --radius-lg:22px;
  --radius:14px;
  --radius-sm:10px;
  --shadow-sm:0 4px 14px rgba(16,35,60,.06);
  --shadow:0 14px 40px rgba(16,35,60,.10);
  --shadow-hover:0 22px 50px rgba(16,35,60,.16);
  --maxw:1180px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  background:var(--bg);
  color:var(--ink);
  line-height:1.78;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
input{font:inherit}
ul,ol{padding-left:20px}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 22px}
.section{padding:68px 0}
.section--white{background:#fff}
.section--tight{padding:52px 0}
.sec-tag{display:inline-block;font-size:13px;letter-spacing:.08em;color:var(--blue-600);background:var(--blue-050);border-radius:999px;padding:5px 14px;font-weight:600;margin-bottom:14px}
.sec-head{max-width:760px;margin-bottom:30px}
.sec-head h2{font-size:clamp(21px,2.3vw,28px);line-height:1.5;margin-bottom:10px;color:var(--brand-800)}
.sec-head p{color:var(--muted);font-size:15.5px}

/* ============ header ============ */
.site-header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.94);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);box-shadow:0 2px 16px rgba(16,35,60,.05)}
.nav-bar{display:grid;grid-template-columns:auto minmax(220px,1fr) auto;align-items:center;gap:24px;padding:12px 0}
.brand{display:flex;align-items:center;gap:11px;min-width:0}
.brand-mark{width:42px;height:42px;border-radius:13px;background:linear-gradient(140deg,#1f4f8f,#2563eb);color:#fff;display:grid;place-items:center;font-weight:800;font-size:19px;box-shadow:0 8px 18px rgba(37,99,235,.28);flex:0 0 auto}
.brand-text{display:flex;flex-direction:column;line-height:1.25;min-width:0}
.brand-text strong{font-size:17px;color:var(--ink);letter-spacing:.02em}
.brand-text em{font-style:normal;font-size:12px;color:var(--muted);letter-spacing:.04em}
.nav-search{display:flex;align-items:center;gap:8px;background:#f1f5fb;border:1px solid var(--line);border-radius:999px;padding:5px 5px 5px 16px;min-width:0;transition:border-color .2s,box-shadow .2s,background .2s}
.nav-search:focus-within{border-color:#bcd0f5;box-shadow:0 0 0 4px rgba(37,99,235,.10);background:#fff}
.nav-search .search-ico{flex:0 0 auto;color:#8b9bb2;font-size:14px}
.nav-search input{flex:1 1 auto;min-width:0;border:0;background:transparent;outline:none;font-size:14px;color:var(--ink);padding:7px 0}
.nav-search input::placeholder{color:#9aa9be}
.nav-search button{flex:0 0 auto;border-radius:999px;background:var(--blue-600);color:#fff;padding:8px 20px;font-size:14px;font-weight:600;transition:background .2s,transform .2s}
.nav-search button:hover{background:#1d4fd0}
.nav-search button:active{transform:scale(.97)}
.nav-links{display:flex;align-items:center;gap:6px}
.nav-links a{padding:9px 15px;border-radius:999px;font-size:15px;color:#33455d;white-space:nowrap;transition:background .2s,color .2s}
.nav-links a:hover{background:#eff4fc;color:var(--blue-600)}
.nav-links a.is-active{background:var(--blue-050);color:var(--blue-600);font-weight:700}
.nav-links a.nav-cta{background:linear-gradient(135deg,#2563eb,#3b82f6);color:#fff;font-weight:700;box-shadow:0 8px 20px rgba(37,99,235,.28)}
.nav-links a.nav-cta:hover{transform:translateY(-1px);box-shadow:0 12px 26px rgba(37,99,235,.34);color:#fff}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid rgba(37,99,235,.45);outline-offset:2px;border-radius:8px}

/* ============ article hero ============ */
.article-hero{
  position:relative;overflow:hidden;color:#eef3fb;
  background:
    radial-gradient(circle at 82% 10%,rgba(230,201,130,.18),transparent 46%),
    radial-gradient(circle at 6% 92%,rgba(59,130,246,.22),transparent 48%),
    linear-gradient(135deg,#0a1728 0%,#122a46 58%,#1b3856 100%);
  padding:44px 0 54px;
}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:#9db1ca}
.crumbs a{color:#c8d8ee;transition:color .2s}
.crumbs a:hover{color:#fff}
.crumbs .sep{color:#5d7characters}
.crumbs .sep{color:#5d7896}
.crumbs .now{color:#8ea6c2;max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-hero h1{font-size:clamp(22px,2.7vw,33px);line-height:1.44;color:#fff;margin:16px 0 16px;letter-spacing:.01em;max-width:920px;overflow-wrap:break-word}
.article-meta{display:flex;flex-wrap:wrap;gap:10px 12px;font-size:13.5px;color:#b9cbe1}
.meta-chip{display:inline-flex;align-items:center;gap:7px;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);border-radius:999px;padding:5px 14px;line-height:1.6}
.meta-chip b{color:var(--gold-400);font-weight:600}

/* ============ article layout ============ */
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 322px;gap:34px;align-items:start}
.article-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow);padding:34px 36px 30px;min-width:0}
.article-body{font-size:16.5px;line-height:1.95;color:#26313f;min-width:0;overflow-x:auto}
.article-body h2{font-size:21px;line-height:1.55;margin:34px 0 14px;padding-left:13px;border-left:4px solid var(--blue-600);color:var(--brand-800)}
.article-body h3{font-size:17.5px;line-height:1.6;margin:24px 0 10px;color:var(--brand-700)}
.article-body h4{font-size:16px;margin:18px 0 8px;color:var(--brand-700)}
.article-body p{margin:0 0 16px}
.article-body ul,.article-body ol{margin:0 0 18px;padding-left:22px}
.article-body li{margin:6px 0}
.article-body a{color:var(--blue-600);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:#1d4fd0}
.article-body img{border-radius:var(--radius);margin:18px 0;max-width:100%;height:auto}
.article-body blockquote{margin:20px 0;padding:14px 18px;border-left:4px solid var(--gold-500);background:#fbf7ea;border-radius:0 var(--radius) var(--radius) 0;color:#5a4a18}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body table{width:100%;border-collapse:collapse;margin:18px 0;font-size:15px;background:#fff}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 12px;text-align:left;vertical-align:top}
.article-body th{background:#f2f7ff;color:var(--brand-800)}
.article-note{margin-top:26px;padding:16px 18px;border:1px solid #f0e2bd;background:#fdf9ee;border-radius:var(--radius);color:#6a5722;font-size:14.5px;line-height:1.85}
.empty-state{padding:46px 22px;text-align:center;background:#f8fafd;border:1px dashed #cfdcee;border-radius:var(--radius)}
.empty-state strong{display:block;font-size:18px;color:var(--brand-800);margin-bottom:10px}
.empty-state p{color:var(--muted);margin-bottom:18px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:700;border-radius:12px;padding:12px 24px;transition:transform .2s,box-shadow .2s,background .2s,border-color .2s,color .2s}
.btn-primary{background:linear-gradient(135deg,#2563eb,#3b82f6);color:#fff;box-shadow:0 10px 24px rgba(37,99,235,.24)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 32px rgba(37,99,235,.32)}
.btn-primary:active{transform:translateY(0)}
.btn-line{border:1px solid #c9d8ee;background:#fff;color:var(--brand-800)}
.btn-line:hover{background:var(--blue-050);border-color:#b3c9ec;color:var(--blue-600)}
.btn-gold{background:linear-gradient(135deg,#e6c982,#c9a227);color:#1d1606;box-shadow:0 12px 26px rgba(201,162,39,.26)}
.btn-gold:hover{transform:translateY(-2px);box-shadow:0 18px 34px rgba(201,162,39,.34)}

/* ============ aside ============ */
.article-aside{min-width:0}
.side-sticky{position:sticky;top:88px;display:grid;gap:18px}
.side-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);padding:22px}
.side-card h3{font-size:16px;color:var(--brand-800);margin-bottom:6px}
.side-card .side-sub{font-size:13.5px;color:var(--muted);margin-bottom:14px;line-height:1.7}
.side-dl{display:grid;gap:9px}
.side-dl a{display:flex;align-items:center;justify-content:space-between;gap:10px;border:1px solid var(--line);background:#f8fbff;border-radius:var(--radius-sm);padding:10px 13px;font-size:14px;color:#2b3f5c;transition:background .2s,border-color .2s,transform .2s;min-width:0}
.side-dl a:hover{background:var(--blue-050);border-color:#bdd2f0;transform:translateX(2px)}
.side-dl span{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.side-dl i{font-style:normal;color:var(--blue-600);font-weight:700;flex:0 0 auto}
.side-links{display:grid;gap:4px;margin-top:4px}
.side-links a{font-size:14.5px;color:#3a4d68;padding:8px 0;border-bottom:1px dashed #e8eef8;transition:color .2s}
.side-links a:last-child{border-bottom:0}
.side-links a:hover{color:var(--blue-600)}

/* ============ download ============ */
.dl-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.dl-card{display:flex;flex-direction:column;gap:12px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);padding:24px;min-width:0;transition:transform .22s,box-shadow .22s,border-color .22s}
.dl-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#cfddf3}
.dl-ico{width:46px;height:46px;border-radius:13px;display:grid;place-items:center;font-size:20px;background:var(--blue-050);color:var(--blue-600)}
.dl-name{font-size:16.5px;font-weight:700;color:var(--brand-800)}
.dl-file{align-self:flex-start;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:12.5px;color:#4b5f7a;background:#f2f6fc;border:1px solid var(--line);border-radius:6px;padding:2px 9px}
.dl-desc{font-size:14.5px;color:var(--muted);line-height:1.85;flex:1 1 auto}
.dl-btn{margin-top:4px;display:block;text-align:center;background:linear-gradient(135deg,#2563eb,#3b82f6);color:#fff;font-weight:700;border-radius:11px;padding:11px 14px;font-size:15px;transition:transform .2s,box-shadow .2s,background .2s}
.dl-btn:hover{transform:translateY(-2px);box-shadow:0 14px 26px rgba(37,99,235,.28);background:linear-gradient(135deg,#1d4fd0,#2f74e8)}
.dl-tip{margin-top:18px;font-size:14px;color:var(--muted);background:#f8fbff;border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px;line-height:1.85}

/* ============ info grid ============ */
.info-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.info-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm);padding:22px;min-width:0;transition:transform .22s,box-shadow .22s}
.info-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.info-card .idx{display:inline-block;font-size:12.5px;font-weight:700;letter-spacing:.06em;color:var(--blue-600);background:var(--blue-050);border-radius:999px;padding:3px 11px;margin-bottom:12px}
.info-card h3{font-size:16.5px;color:var(--brand-800);margin-bottom:8px;line-height:1.6}
.info-card p{font-size:14.8px;color:#41526a;line-height:1.9}

/* ============ checklist ============ */
.check-panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);padding:28px 30px}
.check-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px 26px;list-style:none;padding:0;margin:0}
.check-list li{position:relative;padding-left:30px;font-size:15px;color:#33455d;line-height:1.85;min-width:0}
.check-list li::before{content:"";position:absolute;left:0;top:8px;width:16px;height:16px;border-radius:5px;background:linear-gradient(135deg,#2563eb,#3b82f6);box-shadow:0 4px 10px rgba(37,99,235,.28)}
.check-list li::after{content:"";position:absolute;left:5px;top:12px;width:6px;height:3px;border-left:2px solid #fff;border-bottom:2px solid #fff;transform:rotate(-45deg)}

/* ============ category entry ============ */
.channel-card{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:22px;background:linear-gradient(140deg,#0f2540,#1a3a5c);border-radius:var(--radius-lg);padding:30px 32px;color:#e7eefb;box-shadow:var(--shadow)}
.channel-card h3{font-size:20px;color:#fff;margin-bottom:8px}
.channel-card p{font-size:14.8px;color:#b6c9e2;line-height:1.85;max-width:680px}
.channel-card .btn{white-space:nowrap}

/* ============ faq ============ */
.faq-list{display:grid;gap:12px;max-width:900px}
.faq-item{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm);overflow:hidden;transition:border-color .2s,box-shadow .2s}
.faq-item[open]{border-color:#c9dbf6;box-shadow:var(--shadow)}
.faq-item summary{list-style:none;cursor:pointer;padding:16px 20px;display:flex;align-items:center;justify-content:space-between;gap:14px;font-weight:700;font-size:15.8px;color:var(--brand-800)}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";flex:0 0 auto;color:var(--blue-600);font-size:20px;line-height:1;font-weight:700}
.faq-item[open] summary::after{content:"−"}
.faq-body{padding:0 20px 18px;color:#41526a;font-size:15px;line-height:1.92}

/* ============ cta band ============ */
.cta-band{background:linear-gradient(135deg,#0a1728,#173category)}
.cta-band{background:linear-gradient(135deg,#0a1728,#17324e 60%,#1d3d5c);border-radius:var(--radius-lg);padding:34px 36px;display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:24px;color:#e9f0fb;box-shadow:var(--shadow)}
.cta-band h2{font-size:clamp(19px,2.1vw,25px);color:#fff;margin-bottom:10px;line-height:1.5}
.cta-band p{font-size:14.8px;color:#b0c4dd;line-height:1.85;max-width:660px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
.btn-ghost{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid rgba(255,255,255,.34);color:#e8eefb;padding:12px 24px;border-radius:12px;font-weight:700;transition:background .2s,border-color .2s}
.btn-ghost:hover{background:rgba(255,255,255,.10);border-color:rgba(255,255,255,.58)}

/* ============ footer ============ */
.site-footer{background:#0b182a;color:#a9bcd6;padding:56px 0 26px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:30px;padding-bottom:30px;border-bottom:1px solid rgba(255,255,255,.09)}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand .brand-mark{width:38px;height:38px;border-radius:11px;font-size:17px}
.footer-brand strong{color:#fff;font-size:16.5px;letter-spacing:.02em}
.footer-text{font-size:14px;line-height:1.9;color:#93a8c4;max-width:420px}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:12px;font-weight:700}
.footer-col a{display:block;font-size:14px;color:#9db1ca;padding:5px 0;transition:color .2s,transform .2s}
.footer-col a:hover{color:#fff;transform:translateX(2px)}
.friend-links{display:flex;flex-wrap:wrap;gap:6px 14px}
.friend-links a{display:inline-block;font-size:13.5px;color:#9db1ca;padding:4px 0}
.friend-links a:hover{color:#fff}
.footer-risk{font-size:13px;line-height:1.9;color:#7f93ad;margin:22px 0 18px;padding:14px 16px;border:1px solid rgba(255,255,255,.08);border-radius:var(--radius);background:rgba(255,255,255,.03)}
.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;font-size:13px;color:#7f93ad}

/* ============ responsive ============ */
@media (max-width:1024px){
  .nav-bar{grid-template-columns:1fr auto;gap:12px;padding:10px 0}
  .nav-search{grid-column:1 / -1;order:3}
  .nav-links{order:2}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:26px}
  .side-sticky{position:static}
  .dl-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .info-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px}
  .cta-band{grid-template-columns:minmax(0,1fr)}
}
@media (max-width:768px){
  .section{padding:48px 0}
  .section--tight{padding:38px 0}
  .article-hero{padding:34px 0 40px}
  .article-card{padding:24px 20px 22px}
  .article-body{font-size:16px}
  .dl-grid{grid-template-columns:minmax(0,1fr)}
  .info-grid{grid-template-columns:minmax(0,1fr)}
  .check-list{grid-template-columns:minmax(0,1fr)}
  .check-panel{padding:22px}
  .channel-card{grid-template-columns:minmax(0,1fr);padding:24px}
  .cta-band{padding:26px 22px}
  .nav-links a{padding:8px 12px;font-size:14px}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .brand-text strong{font-size:15.5px}
  .brand-text em{font-size:11px}
  .nav-bar{grid-template-columns:minmax(0,1fr)}
  .nav-links{flex-wrap:wrap}
  .nav-search{padding-left:13px}
  .nav-search button{padding:8px 15px}
  .footer-grid{grid-template-columns:minmax(0,1fr)}
  .footer-bottom{flex-direction:column;gap:6px}
  .article-hero h1{font-size:21px}
}

/* roulang page: category1 */
:root{
  --brand-900:#0a1728;
  --brand-800:#102a46;
  --brand-700:#1a3a5c;
  --blue-600:#2563eb;
  --blue-500:#3b82f6;
  --blue-050:#eef4ff;
  --gold-400:#e6c982;
  --gold-500:#c9a227;
  --ink:#16202f;
  --muted:#5d6c80;
  --bg:#f5f8fc;
  --card:#ffffff;
  --line:#e4ebf5;
  --radius-lg:22px;
  --radius:14px;
  --radius-sm:10px;
  --shadow-sm:0 4px 14px rgba(16,35,60,.06);
  --shadow:0 14px 40px rgba(16,35,60,.10);
  --shadow-hover:0 22px 50px rgba(16,35,60,.16);
  --maxw:1180px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  background:var(--bg);
  color:var(--ink);
  line-height:1.78;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol{margin:0;padding:0}
ul,ol{list-style:none}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
input{font:inherit}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 22px}
.section{padding:68px 0}
.section--white{background:#fff}
.section--tight{padding:52px 0}
.sec-tag{display:inline-block;font-size:13px;letter-spacing:.08em;color:var(--blue-600);background:var(--blue-050);border-radius:999px;padding:5px 14px;font-weight:600;margin-bottom:14px}
.sec-head{max-width:760px;margin-bottom:34px}
.sec-head h2{font-size:clamp(21px,2.2vw,28px);line-height:1.42;letter-spacing:.01em}
.sec-head p{color:var(--muted);margin-top:12px;font-size:15.5px}

/* ============ header ============ */
.site-header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.94);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);box-shadow:0 2px 16px rgba(16,35,60,.05)}
.nav-bar{display:grid;grid-template-columns:auto minmax(220px,1fr) auto;align-items:center;gap:24px;padding:12px 0}
.brand{display:flex;align-items:center;gap:11px;min-width:0}
.brand-mark{width:42px;height:42px;border-radius:13px;background:linear-gradient(140deg,#1f4f8f,#2563eb);color:#fff;display:grid;place-items:center;font-weight:800;font-size:19px;box-shadow:0 8px 18px rgba(37,99,235,.28);flex:0 0 auto}
.brand-text{display:flex;flex-direction:column;line-height:1.25;min-width:0}
.brand-text strong{font-size:17px;color:var(--ink);letter-spacing:.02em}
.brand-text em{font-style:normal;font-size:12px;color:var(--muted);letter-spacing:.04em}
.nav-search{display:flex;align-items:center;gap:8px;background:#f1f5fb;border:1px solid var(--line);border-radius:999px;padding:5px 5px 5px 16px;min-width:0;transition:border-color .2s,box-shadow .2s}
.nav-search:focus-within{border-color:#bcd0f5;box-shadow:0 0 0 4px rgba(37,99,235,.10);background:#fff}
.nav-search .search-ico{flex:0 0 auto;color:#8b9bb2;font-size:14px}
.nav-search input{flex:1 1 auto;min-width:0;border:0;background:transparent;outline:none;font-size:14px;color:var(--ink);padding:7px 0}
.nav-search input::placeholder{color:#9aa9be}
.nav-search button{flex:0 0 auto;border-radius:999px;background:var(--blue-600);color:#fff;padding:8px 20px;font-size:14px;font-weight:600;transition:background .2s,transform .2s}
.nav-search button:hover{background:#1d4fd0}
.nav-search button:active{transform:scale(.97)}
.nav-links{display:flex;align-items:center;gap:6px}
.nav-links a{padding:9px 15px;border-radius:999px;font-size:15px;color:#33455d;white-space:nowrap;transition:background .2s,color .2s}
.nav-links a:hover{background:#eff4fc;color:var(--blue-600)}
.nav-links a.is-active{background:var(--blue-050);color:var(--blue-600);font-weight:700}
.nav-links a.nav-cta{background:linear-gradient(135deg,#2563eb,#3b82f6);color:#fff;font-weight:700;box-shadow:0 8px 20px rgba(37,99,235,.28)}
.nav-links a.nav-cta:hover{transform:translateY(-1px);box-shadow:0 12px 26px rgba(37,99,235,.34);color:#fff}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid rgba(37,99,235,.45);outline-offset:2px;border-radius:8px}

/* ============ category hero ============ */
.cat-hero{
  background:
    radial-gradient(circle at 92% 6%,rgba(37,99,235,.10),transparent 46%),
    radial-gradient(circle at 4% 88%,rgba(201,162,39,.10),transparent 44%),
    linear-gradient(180deg,#ffffff 0%,#f2f7ff 100%);
  border-bottom:1px solid var(--line);
  padding:34px 0 58px;
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--muted);margin-bottom:26px}
.breadcrumb a{color:var(--blue-600)}
.breadcrumb a:hover{text-decoration:underline}
.breadcrumb span{color:#a6b5c8}
.cat-hero-grid{display:grid;grid-template-columns:minmax(0,1.16fr) minmax(0,.84fr);gap:44px;align-items:start}
.cat-hero-main h1{font-size:clamp(25px,3vw,37px);line-height:1.36;letter-spacing:.01em;margin:4px 0 16px;color:var(--brand-900)}
.cat-lead{color:#41546c;font-size:16px;max-width:660px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px}
.btn-primary{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:linear-gradient(135deg,#2563eb,#3b82f6);color:#fff;font-weight:700;padding:13px 27px;border-radius:12px;box-shadow:0 12px 28px rgba(37,99,235,.26);transition:transform .2s,box-shadow .2s,filter .2s}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 34px rgba(37,99,235,.34);filter:brightness(1.04)}
.btn-primary:active{transform:translateY(0)}
.btn-line{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid #c9d8ef;background:#fff;color:var(--brand-800);padding:13px 25px;border-radius:12px;font-weight:600;transition:border-color .2s,background .2s,transform .2s}
.btn-line:hover{border-color:#9dbdec;background:#f7faff;transform:translateY(-2px)}
.cat-facts{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px 22px;margin-top:30px;color:#4a5d75;font-size:14px}
.cat-facts li{display:flex;align-items:flex-start;gap:8px;min-width:0}
.cat-facts li::before{content:"";flex:0 0 auto;width:7px;height:7px;border-radius:50%;background:var(--blue-500);margin-top:9px}
.cat-aside{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow);padding:26px}
.cat-aside h2{font-size:16px;letter-spacing:.02em;color:var(--brand-900);padding-bottom:14px;border-bottom:1px dashed var(--line)}
.aside-list{margin-top:16px;display:grid;gap:12px}
.aside-list li{display:flex;gap:12px;align-items:flex-start;min-width:0;background:#f8fbff;border:1px solid var(--line);border-radius:12px;padding:12px 13px;transition:border-color .2s,background .2s,transform .2s}
.aside-list li:hover{border-color:#c6dbf7;background:#fff;transform:translateX(2px)}
.aside-list b{flex:0 0 auto;width:34px;height:34px;border-radius:10px;background:var(--blue-050);color:var(--blue-600);display:grid;place-items:center;font-size:12.5px;font-weight:700}
.aside-list strong{display:block;font-size:14.5px;color:var(--ink)}
.aside-list p{font-size:13px;color:var(--muted);line-height:1.65;margin-top:2px}

/* ============ cards ============ */
.plans-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.plan-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);padding:28px 26px;box-shadow:var(--shadow-sm);min-width:0;transition:transform .22s,box-shadow .22s,border-color .22s;display:flex;flex-direction:column}
.plan-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#cfe0f8}
.plan-card .num{font-size:13px;font-weight:700;color:var(--blue-600);background:var(--blue-050);border-radius:999px;padding:4px 12px;align-self:flex-start;letter-spacing:.06em}
.plan-card h3{font-size:18px;margin:16px 0 10px;color:var(--brand-900)}
.plan-card p{font-size:14.5px;color:var(--muted);line-height:1.78}
.plan-card ul{margin-top:16px;display:grid;gap:9px;font-size:14px;color:#3d5068}
.plan-card ul li{display:flex;gap:9px;align-items:flex-start;min-width:0}
.plan-card ul li::before{content:"›";flex:0 0 auto;color:var(--blue-500);font-weight:800;line-height:1.5}

.scene-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.scene-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px 20px;box-shadow:var(--shadow-sm);min-width:0;transition:transform .22s,box-shadow .22s}
.scene-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.scene-card h3{font-size:16px;color:var(--brand-900);margin-bottom:8px}
.scene-card p{font-size:14px;color:var(--muted);line-height:1.75}
.scene-card .tag{display:inline-block;margin-top:14px;font-size:12px;color:var(--gold-500);background:#fdf8ea;border:1px solid #f2e3b8;border-radius:999px;padding:3px 11px}

/* ============ timeline ============ */
.risk-wrap{display:grid;grid-template-columns:minmax(0,.92fr) minmax(0,1.08fr);gap:42px;align-items:start}
.risk-text p{color:var(--muted);font-size:15px;margin-top:12px}
.risk-note{margin-top:22px;border-left:3px solid var(--gold-500);background:#fdf9ee;border-radius:0 12px 12px 0;padding:14px 18px;font-size:14px;color:#6b5a24;line-height:1.75}
.steps{position:relative;padding-left:26px;display:grid;gap:16px}
.steps::before{content:"";position:absolute;left:7px;top:8px;bottom:8px;width:2px;background:linear-gradient(#cfe0f8,#eef4ff)}
.step{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;box-shadow:var(--shadow-sm);min-width:0}
.step::before{content:"";position:absolute;left:-26px;top:22px;width:14px;height:14px;border-radius:50%;background:#fff;border:3px solid var(--blue-500);box-shadow:0 0 0 4px rgba(37,99,235,.10)}
.step h3{font-size:15.5px;color:var(--brand-900);margin-bottom:6px}
.step p{font-size:14px;color:var(--muted);line-height:1.75}

/* ============ fee list ============ */
.fee-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.fee-item{display:flex;gap:16px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow-sm);min-width:0}
.fee-item .dot{flex:0 0 auto;width:40px;height:40px;border-radius:12px;background:linear-gradient(140deg,#eef4ff,#dfeaff);color:var(--blue-600);display:grid;place-items:center;font-weight:800;font-size:15px}
.fee-item h3{font-size:15.5px;color:var(--brand-900);margin-bottom:5px}
.fee-item p{font-size:14px;color:var(--muted);line-height:1.75}

/* ============ flow ============ */
.flow-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.flow-card{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px 20px 22px;box-shadow:var(--shadow-sm);min-width:0;transition:transform .22s,box-shadow .22s}
.flow-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.flow-card .idx{position:absolute;top:-13px;left:20px;width:30px;height:30px;border-radius:9px;background:linear-gradient(135deg,#2563eb,#3b82f6);color:#fff;display:grid;place-items:center;font-size:13.5px;font-weight:800;box-shadow:0 8px 18px rgba(37,99,235,.28)}
.flow-card h3{font-size:15.5px;color:var(--brand-900);margin:10px 0 7px}
.flow-card p{font-size:13.8px;color:var(--muted);line-height:1.72}

/* ============ posts ============ */
.post-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.post-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px 22px;box-shadow:var(--shadow-sm);min-width:0;display:flex;flex-direction:column;transition:transform .22s,box-shadow .22s,border-color .22s}
.post-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#cfe0f8}
.post-card h3{font-size:16.5px;line-height:1.55;color:var(--brand-900);word-break:break-word}
.post-card h3 a:hover{color:var(--blue-600)}
.post-card p{font-size:14px;color:var(--muted);margin-top:10px;line-height:1.75;word-break:break-word}
.post-more{margin-top:auto;padding-top:16px;font-size:13.5px;font-weight:700;color:var(--blue-600)}
.post-more::after{content:" →"}
.empty-tip{color:var(--muted);font-size:14.5px;background:#fff;border:1px dashed var(--line);border-radius:var(--radius);padding:26px;text-align:center}

/* ============ download ============ */
.download{background:linear-gradient(135deg,#0a1728 0%,#122a46 58%,#1b3856 100%);color:#eaf1fb;border-radius:var(--radius-lg);padding:46px 40px;box-shadow:0 30px 60px rgba(6,18,34,.35);position:relative;overflow:hidden}
.download::after{content:"";position:absolute;right:-60px;bottom:-80px;width:280px;height:280px;border-radius:50%;background:radial-gradient(circle,rgba(230,201,130,.20),transparent 68%)}
.download-head{max-width:700px;position:relative;z-index:1}
.download-head .sec-tag{background:rgba(230,201,130,.16);color:var(--gold-400)}
.download-head h2{font-size:clamp(21px,2.3vw,28px);color:#fff;line-height:1.4}
.download-head p{color:#b9cbe2;margin-top:12px;font-size:15px}
.dl-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin-top:30px;position:relative;z-index:1}
.dl-card{background:rgba(255,255,255,.055);border:1px solid rgba(255,255,255,.13);border-radius:var(--radius);padding:22px 20px;display:flex;flex-direction:column;min-width:0;transition:background .2s,border-color .2s,transform .2s}
.dl-card:hover{background:rgba(255,255,255,.10);border-color:rgba(230,201,130,.45);transform:translateY(-3px)}
.dl-card h3{font-size:16px;color:#fff;margin-bottom:6px}
.dl-card span{font-size:13px;color:#9db1ca;word-break:break-all}
.dl-btn{margin-top:18px;display:inline-flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#e6c982,#c9a227);color:#1d1606;font-weight:700;padding:12px 16px;border-radius:11px;font-size:14.5px;transition:transform .2s,box-shadow .2s}
.dl-btn:hover{transform:translateY(-2px);box-shadow:0 14px 28px rgba(201,162,39,.30)}
.dl-tip{margin-top:22px;font-size:13px;color:#93a7c1;position:relative;z-index:1}

/* ============ faq ============ */
.faq-list{display:grid;gap:14px;max-width:920px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm);overflow:hidden;transition:border-color .2s,box-shadow .2s}
.faq-item[open]{border-color:#cfe0f8;box-shadow:var(--shadow)}
.faq-item summary{list-style:none;cursor:pointer;padding:18px 22px;font-size:15.5px;font-weight:600;color:var(--brand-900);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:0 0 auto;font-size:20px;color:var(--blue-500);line-height:1;transition:transform .2s}
.faq-item[open] summary::after{content:"−"}
.faq-item p{padding:0 22px 20px;font-size:14.5px;color:var(--muted);line-height:1.8}

/* ============ cta ============ */
.cta-band{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:38px 40px;box-shadow:var(--shadow-sm);display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:22px}
.cta-band h2{font-size:clamp(19px,2.1vw,25px);color:var(--brand-900)}
.cta-band p{color:var(--muted);font-size:14.5px;margin-top:8px;max-width:640px}

/* ============ footer ============ */
.site-footer{background:var(--brand-900);color:#c3d2e5;padding:56px 0 26px;margin-top:20px}
.footer-grid{display:grid;grid-template-columns:minmax(0,1.5fr) repeat(3,minmax(0,.85fr));gap:34px}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:14px}
.footer-brand .brand-mark{width:38px;height:38px;border-radius:11px;font-size:17px}
.footer-brand strong{color:#fff;font-size:16.5px;letter-spacing:.02em}
.footer-text{font-size:14px;color:#9fb3ca;line-height:1.8;max-width:430px}
.footer-col h4{color:#fff;font-size:14.5px;margin-bottom:14px;letter-spacing:.04em}
.footer-col a{display:block;font-size:14px;color:#a9bdd4;padding:5px 0;transition:color .2s,transform .2s}
.footer-col a:hover{color:var(--gold-400);transform:translateX(2px)}
.friend-links{display:flex;flex-wrap:wrap;gap:8px}
.friend-links a{display:inline-block;font-size:13px;color:#a9bdd4;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.09);border-radius:8px;padding:5px 10px;transition:color .2s,border-color .2s,background .2s}
.friend-links a:hover{color:var(--gold-400);border-color:rgba(230,201,130,.45);background:rgba(230,201,130,.08)}
.footer-risk{margin-top:34px;font-size:13px;color:#8fa4bd;line-height:1.85;border-top:1px solid rgba(255,255,255,.10);padding-top:22px}
.footer-bottom{margin-top:16px;display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;font-size:13px;color:#7f93ac}

/* ============ responsive ============ */
@media (max-width:1024px){
  .nav-bar{grid-template-columns:auto 1fr;gap:14px}
  .nav-search{grid-column:1 / -1;order:3}
  .nav-links{justify-self:end}
  .cat-hero-grid{grid-template-columns:1fr;gap:32px}
  .plans-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .scene-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .flow-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .post-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .risk-wrap{grid-template-columns:1fr;gap:30px}
  .dl-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px}
}
@media (max-width:768px){
  .section{padding:50px 0}
  .section--tight{padding:40px 0}
  .nav-bar{grid-template-columns:1fr;gap:12px;padding:12px 0}
  .nav-links{justify-self:start;flex-wrap:wrap}
  .cat-hero{padding:24px 0 44px}
  .cat-facts{grid-template-columns:1fr}
  .fee-grid{grid-template-columns:1fr}
  .download{padding:34px 24px;border-radius:18px}
  .cta-band{padding:28px 24px}
  .footer-grid{grid-template-columns:1fr}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .plans-grid,.scene-grid,.flow-grid,.post-grid,.dl-grid{grid-template-columns:1fr}
  .hero-actions{flex-direction:column;align-items:stretch}
  .btn-primary,.btn-line{width:100%}
  .cat-aside{padding:20px}
  .plan-card{padding:24px 20px}
  .nav-search{padding:4px 4px 4px 14px}
  .nav-search button{padding:8px 16px}
}