/* roulang page: index */
:root{
  --navy-900:#08182a;
  --navy-800:#0b1e33;
  --navy-700:#102a45;
  --navy-600:#16395c;
  --blue-700:#15597f;
  --blue-600:#1a6f9e;
  --blue-500:#2287b8;
  --aqua-400:#3fb6c9;
  --gold-500:#d9932c;
  --gold-400:#f0b455;
  --ink:#12212f;
  --ink-soft:#4a5b6b;
  --ink-mute:#7b8ca0;
  --line:#e3e9f0;
  --line-strong:#cfdbe7;
  --bg:#f5f8fb;
  --bg-alt:#edf3f8;
  --white:#ffffff;
  --radius-s:8px;
  --radius:12px;
  --radius-l:18px;
  --shadow-s:0 1px 2px rgba(16,42,69,.06),0 4px 14px rgba(16,42,69,.05);
  --shadow-m:0 8px 26px rgba(16,42,69,.10);
  --shadow-l:0 18px 44px rgba(16,42,69,.16);
  --container:1180px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-size:15px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
h1,h2,h3,h4{margin:0;line-height:1.32;letter-spacing:-.01em;font-weight:700}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--aqua-400);outline-offset:3px;border-radius:4px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(11,30,51,.97);
  border-bottom:1px solid rgba(255,255,255,.09);
  transition:box-shadow .22s ease;
}
.site-header.is-stuck{box-shadow:0 10px 26px rgba(5,16,28,.34)}
.header-inner{display:flex;align-items:center;gap:26px;min-height:64px}
.brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:16px;font-weight:700;letter-spacing:.02em;white-space:nowrap;flex:0 0 auto}
.brand-mark{
  width:32px;height:32px;border-radius:9px;flex:0 0 auto;
  background:linear-gradient(135deg,var(--blue-500),var(--aqua-400));
  display:grid;place-items:center;
  box-shadow:0 4px 12px rgba(34,135,184,.36);
}
.brand-mark svg{width:18px;height:18px;stroke:#fff;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.main-nav{display:flex;align-items:center;gap:2px;margin-left:auto}
.main-nav a{
  position:relative;display:inline-flex;align-items:center;
  min-height:40px;padding:0 13px;border-radius:8px;
  font-size:14px;color:rgba(255,255,255,.74);
  transition:color .18s ease,background .18s ease;
}
.main-nav a:hover{color:#fff;background:rgba(255,255,255,.08)}
.main-nav a.active{color:#fff;background:rgba(255,255,255,.12)}
.main-nav a.active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:6px;height:2px;
  border-radius:2px;background:var(--gold-400);
}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:8px;
  border:1px solid rgba(255,255,255,.22);
  align-items:center;justify-content:center;
  transition:background .18s ease;
}
.nav-toggle:hover{background:rgba(255,255,255,.1)}
.nav-toggle svg{width:20px;height:20px;stroke:#fff;fill:none;stroke-width:1.9;stroke-linecap:round}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 22px;border-radius:var(--radius-s);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;
  transition:transform .18s ease,background .18s ease,box-shadow .18s ease,color .18s ease,border-color .18s ease;
}
.btn svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.btn-primary{background:var(--blue-600);color:#fff;box-shadow:0 7px 18px rgba(26,111,158,.30)}
.btn-primary:hover{background:var(--blue-700);transform:translateY(-2px);box-shadow:0 10px 22px rgba(26,111,158,.36)}
.btn-ghost{background:rgba(255,255,255,.06);color:#fff;border-color:rgba(255,255,255,.42)}
.btn-ghost:hover{background:rgba(255,255,255,.16);transform:translateY(-2px)}
.btn-gold{background:var(--gold-500);color:#231402;box-shadow:0 7px 18px rgba(217,147,44,.28)}
.btn-gold:hover{background:var(--gold-400);transform:translateY(-2px)}
.btn-outline{background:#fff;color:var(--navy-700);border-color:var(--line-strong)}
.btn-outline:hover{border-color:var(--blue-500);color:var(--blue-700);transform:translateY(-2px)}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px}

/* ---------- hero ---------- */
.hero{
  position:relative;overflow:hidden;color:#fff;
  background:var(--navy-900) url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(170deg,rgba(6,18,32,.88) 0%,rgba(8,24,42,.90) 55%,rgba(10,32,54,.94) 100%);
}
.hero .container{position:relative;z-index:2;padding-top:58px;padding-bottom:54px}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  background:rgba(63,182,201,.14);
  border:1px solid rgba(63,182,201,.38);
  color:#bfe9f2;font-size:13px;letter-spacing:.04em;
  margin-bottom:20px;
}
.hero-badge::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--aqua-400);box-shadow:0 0 0 4px rgba(63,182,201,.18)}
.hero h1{
  font-size:clamp(30px,3.4vw,44px);
  line-height:1.26;
  max-width:880px;
  letter-spacing:-.015em;
}
.hero-lead{
  max-width:820px;margin-top:18px;
  font-size:15.5px;line-height:1.85;color:rgba(255,255,255,.82);
}
.hero-checks{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  gap:12px;margin-top:28px;max-width:960px;
}
.check-item{
  display:flex;align-items:flex-start;gap:9px;
  padding:12px 14px;border-radius:var(--radius-s);
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.13);
  font-size:13.5px;color:rgba(255,255,255,.9);line-height:1.55;
}
.check-item svg{width:16px;height:16px;flex:0 0 auto;margin-top:2px;stroke:var(--aqua-400);fill:none;stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.tag-pill{
  display:inline-flex;align-items:center;
  padding:5px 13px;border-radius:999px;
  font-size:13px;color:rgba(255,255,255,.78);
  border:1px solid rgba(255,255,255,.2);
  background:rgba(255,255,255,.05);
}

/* ---------- sections ---------- */
.section{padding:64px 0}
.section--alt{background:var(--bg-alt)}
.section--plain{background:var(--white)}
.section--tight{padding:52px 0}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:28px;margin-bottom:34px;flex-wrap:wrap;
}
.section-head .head-text{max-width:700px}
.section-kicker{
  display:inline-block;font-size:12.5px;letter-spacing:.14em;
  color:var(--blue-600);font-weight:600;margin-bottom:8px;
}
.section-title{
  position:relative;font-size:clamp(21px,2.1vw,27px);
  padding-left:16px;color:var(--navy-800);
}
.section-title::before{
  content:"";position:absolute;left:0;top:5px;bottom:5px;width:4px;
  border-radius:3px;background:linear-gradient(180deg,var(--blue-500),var(--aqua-400));
}
.section-desc{margin-top:12px;color:var(--ink-soft);font-size:14.5px;line-height:1.8;padding-left:16px}

/* ---------- stats ---------- */
.stats-panel{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  gap:1px;background:var(--line);
  border:1px solid var(--line);border-radius:var(--radius-l);
  overflow:hidden;box-shadow:var(--shadow-s);
}
.stat-cell{background:#fff;padding:26px 22px;transition:background .2s ease}
.stat-cell:hover{background:#f8fbfd}
.stat-num{
  font-size:32px;font-weight:700;color:var(--navy-700);
  line-height:1.1;font-variant-numeric:tabular-nums;
}
.stat-num span{font-size:15px;font-weight:600;color:var(--blue-600);margin-left:4px}
.stat-label{margin-top:8px;font-size:13.5px;color:var(--ink-soft)}

/* ---------- grids & cards ---------- */
.grid{display:grid;gap:20px}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;box-shadow:var(--shadow-s);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-m);border-color:#c6d9e9}
.card-title{font-size:17px;color:var(--navy-800);margin-bottom:10px}
.card-text{font-size:14px;color:var(--ink-soft);line-height:1.78}
.icon-badge{
  width:44px;height:44px;border-radius:12px;
  display:grid;place-items:center;margin-bottom:16px;
  background:#e9f2f9;color:var(--blue-600);
}
.icon-badge svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.card-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.chip{
  display:inline-flex;align-items:center;
  padding:3px 10px;border-radius:6px;
  font-size:12px;color:var(--blue-700);
  background:#eaf3f9;border:1px solid #d6e7f2;
}
.chip-gold{color:#7c5410;background:#fdf3e2;border-color:#f3e0bd}

/* ---------- clock ---------- */
.clock-bar{
  display:flex;flex-wrap:wrap;align-items:center;gap:22px;
  padding:20px 24px;border-radius:var(--radius);
  background:linear-gradient(120deg,var(--navy-700),#1a4c73);
  border:1px solid rgba(255,255,255,.1);
  color:#fff;box-shadow:var(--shadow-m);
}
.clock-bar .clock-label{font-size:14px;color:rgba(255,255,255,.82);flex:1 1 220px}
.clock-bar .clock-label strong{display:block;font-size:15.5px;color:#fff;margin-bottom:2px}
.clock-digits{display:flex;gap:8px}
.clock-unit{min-width:64px;text-align:center;padding:8px 6px;border-radius:10px;background:rgba(255,255,255,.1)}
.clock-unit strong{display:block;font-size:22px;line-height:1.15;color:var(--gold-400);font-variant-numeric:tabular-nums}
.clock-unit span{font-size:11px;color:rgba(255,255,255,.66);letter-spacing:.06em}
.clock-note{font-size:13px;color:rgba(255,255,255,.7);flex:1 1 100%}

/* ---------- progress ---------- */
.progress-list{margin-top:26px;display:grid;gap:20px}
.progress-head{display:flex;justify-content:space-between;gap:16px;font-size:14px;margin-bottom:9px;color:var(--navy-700)}
.progress-head span:last-child{color:var(--blue-600);font-weight:600;font-variant-numeric:tabular-nums}
.progress-track{height:8px;border-radius:999px;background:#dfe9f2;overflow:hidden}
.progress-fill{height:100%;border-radius:999px;background:linear-gradient(90deg,var(--blue-500),var(--aqua-400));transition:width .6s ease}
.progress-fill.gold{background:linear-gradient(90deg,var(--gold-500),var(--gold-400))}

/* ---------- list rows ---------- */
.row-list{display:grid;gap:14px}
.row-item{
  display:flex;align-items:flex-start;gap:16px;
  padding:18px 22px;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);box-shadow:var(--shadow-s);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.row-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-m);border-color:#c6d9e9}
.row-index{
  flex:0 0 auto;width:30px;height:30px;border-radius:8px;
  display:grid;place-items:center;font-size:13px;font-weight:700;
  background:var(--navy-700);color:#fff;
}
.row-body{flex:1 1 auto;min-width:0}
.row-title{font-size:15.5px;color:var(--navy-800);margin-bottom:4px}
.row-text{font-size:13.5px;color:var(--ink-soft);line-height:1.72}
.row-meta{flex:0 0 auto;font-size:12.5px;color:var(--ink-mute);white-space:nowrap;align-self:center}

/* ---------- compare table ---------- */
.table-wrap{
  overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);
  background:#fff;box-shadow:var(--shadow-s);
}
.compare{min-width:660px}
.compare th,.compare td{padding:14px 18px;text-align:left;font-size:14px;border-bottom:1px solid var(--line)}
.compare thead th{
  background:#f0f5fa;font-size:13px;font-weight:600;color:var(--ink-soft);
  letter-spacing:.04em;white-space:nowrap;
}
.compare tbody tr:last-child td{border-bottom:0}
.compare tbody tr{transition:background .18s ease}
.compare tbody tr:hover{background:#f7fbfd}
.compare td:first-child{font-weight:600;color:var(--navy-800)}
.trend{font-size:12.5px;font-weight:600;padding:2px 9px;border-radius:999px;display:inline-block}
.trend-up{color:#1c6b4a;background:#e6f5ed}
.trend-flat{color:#7a5a12;background:#fbf2dd}
.trend-down{color:#8b3b3b;background:#fbeaea}

/* ---------- timeline ---------- */
.timeline{position:relative;padding-left:30px;margin-top:8px}
.timeline::before{
  content:"";position:absolute;left:7px;top:8px;bottom:8px;width:2px;
  background:linear-gradient(180deg,var(--blue-500),rgba(63,182,201,.12));
}
.timeline li{position:relative;padding-bottom:26px}
.timeline li:last-child{padding-bottom:0}
.timeline li::before{
  content:"";position:absolute;left:-30px;top:6px;width:16px;height:16px;
  border-radius:50%;background:#fff;border:3px solid var(--blue-500);
  box-shadow:0 0 0 4px rgba(34,135,184,.10);
}
.tl-time{font-size:12.5px;letter-spacing:.08em;color:var(--blue-600);font-weight:600}
.tl-title{font-size:15.5px;color:var(--navy-800);margin:4px 0 5px}
.tl-text{font-size:13.5px;color:var(--ink-soft);line-height:1.75}

/* ---------- changelog ---------- */
.log-item{
  display:grid;grid-template-columns:130px 1fr;gap:22px;
  padding:18px 0;border-bottom:1px dashed var(--line);
}
.log-item:last-child{border-bottom:0;padding-bottom:0}
.log-date{font-size:13px;color:var(--ink-mute);letter-spacing:.05em;font-variant-numeric:tabular-nums}
.log-title{font-size:15.5px;color:var(--navy-800);margin-bottom:5px}
.log-text{font-size:13.5px;color:var(--ink-soft);line-height:1.75}

/* ---------- category wall ---------- */
.cat-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow-s);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.cat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-m);border-color:#c6d9e9}
.cat-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:#dce7f0}
.cat-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.cat-card:hover .cat-thumb img{transform:scale(1.05)}
.cat-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto}
.cat-name{font-size:17px;color:var(--navy-800)}
.cat-text{font-size:13.5px;color:var(--ink-soft);line-height:1.75}
.cat-more{margin-top:auto;font-size:13.5px;font-weight:600;color:var(--blue-600);display:inline-flex;align-items:center;gap:6px}
.cat-more svg{width:14px;height:14px;fill:none;stroke:currentColor;stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round;transition:transform .2s ease}
.cat-card:hover .cat-more svg{transform:translateX(3px)}

/* ---------- feature band ---------- */
.feature-row{display:grid;grid-template-columns:1.02fr .98fr;gap:40px;align-items:center}
.feature-row + .feature-row{margin-top:48px}
.feature-row.reverse .feature-media{order:2}
.feature-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:var(--radius-l);box-shadow:var(--shadow-m);
}
.feature-body h3{font-size:20px;color:var(--navy-800);margin-bottom:12px}
.feature-body p{font-size:14.5px;color:var(--ink-soft);line-height:1.85}
.feature-list{margin-top:16px;display:grid;gap:10px}
.feature-list li{position:relative;padding-left:20px;font-size:14px;color:var(--ink-soft);line-height:1.72}
.feature-list li::before{
  content:"";position:absolute;left:0;top:9px;width:7px;height:7px;
  border-radius:2px;background:var(--aqua-400);transform:rotate(45deg);
}

/* ---------- post cards ---------- */
.post-card{
  display:flex;flex-direction:column;gap:10px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:22px;box-shadow:var(--shadow-s);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.post-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-m);border-color:#c6d9e9}
.post-tag{
  align-self:flex-start;font-size:12px;padding:3px 10px;border-radius:6px;
  background:#eaf3f9;color:var(--blue-700);border:1px solid #d6e7f2;
}
.post-title{font-size:16px;color:var(--navy-800);line-height:1.5}
.post-text{font-size:13.5px;color:var(--ink-soft);line-height:1.72}
.post-meta{margin-top:auto;padding-top:12px;font-size:12.5px;color:var(--ink-mute);display:flex;justify-content:space-between;gap:12px}
.post-list{display:grid;gap:12px}
.post-row{
  display:flex;align-items:flex-start;gap:16px;justify-content:space-between;
  padding:16px 20px;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);box-shadow:var(--shadow-s);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.post-row:hover{transform:translateY(-2px);box-shadow:var(--shadow-m);border-color:#c6d9e9}
.post-row .pr-main{min-width:0}
.post-row h4{font-size:15px;color:var(--navy-800);margin-bottom:4px;line-height:1.5}
.post-row p{font-size:13px;color:var(--ink-soft);line-height:1.7}
.post-row .pr-date{font-size:12.5px;color:var(--ink-mute);white-space:nowrap;flex:0 0 auto}
.empty-state{
  padding:34px 24px;text-align:center;color:var(--ink-mute);
  background:#fff;border:1px dashed var(--line-strong);border-radius:var(--radius);
  font-size:14px;
}

/* ---------- assurance ---------- */
.assure-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.assure{
  padding:22px;border-radius:var(--radius);
  background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-s);
  transition:transform .2s ease,box-shadow .2s ease;
}
.assure:hover{transform:translateY(-3px);box-shadow:var(--shadow-m)}
.assure svg{width:24px;height:24px;fill:none;stroke:var(--blue-600);stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;margin-bottom:12px}
.assure h3{font-size:15px;color:var(--navy-800);margin-bottom:6px}
.assure p{font-size:13.5px;color:var(--ink-soft);line-height:1.72}

/* ---------- faq ---------- */
.faq-list{display:grid;gap:12px}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:0 22px;box-shadow:var(--shadow-s);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item:hover{border-color:#c6d9e9}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:18px 0;font-size:15.5px;font-weight:600;color:var(--navy-800);
  cursor:pointer;list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"";flex:0 0 auto;width:10px;height:10px;
  border-right:2px solid var(--blue-600);border-bottom:2px solid var(--blue-600);
  transform:rotate(45deg);transition:transform .2s ease;margin-top:-4px;
}
.faq-item[open] summary::after{transform:rotate(-135deg);margin-top:2px}
.faq-item[open] summary{color:var(--blue-700)}
.faq-item p{padding:0 0 20px;font-size:14px;color:var(--ink-soft);line-height:1.85;max-width:900px}

/* ---------- subscribe ---------- */
.subscribe-band{
  position:relative;overflow:hidden;color:#fff;
  background:var(--navy-800) url('/assets/images/backpic/back-4.webp') center/cover no-repeat;
}
.subscribe-band::after{content:"";position:absolute;inset:0;background:linear-gradient(120deg,rgba(7,21,36,.94),rgba(12,45,72,.9))}
.subscribe-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.1fr .9fr;gap:44px;align-items:center;padding:60px 0}
.subscribe-inner h2{font-size:clamp(22px,2.2vw,29px);margin-bottom:14px}
.subscribe-inner p{font-size:14.5px;color:rgba(255,255,255,.8);line-height:1.85}
.subscribe-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.subscribe-points span{
  font-size:13px;padding:5px 13px;border-radius:999px;
  border:1px solid rgba(255,255,255,.22);background:rgba(255,255,255,.07);color:rgba(255,255,255,.82);
}
.subscribe-form{
  display:flex;gap:12px;flex-wrap:wrap;
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.18);
  padding:18px;border-radius:var(--radius-l);
}
.subscribe-form input{
  flex:1 1 220px;min-height:46px;padding:0 16px;border-radius:var(--radius-s);
  border:1px solid rgba(255,255,255,.24);
  background:rgba(255,255,255,.1);color:#fff;font-size:14.5px;
  transition:border-color .18s ease,background .18s ease;
}
.subscribe-form input::placeholder{color:rgba(255,255,255,.5)}
.subscribe-form input:focus{outline:none;border-color:var(--aqua-400);background:rgba(255,255,255,.16)}
.form-note{flex:1 1 100%;font-size:12.5px;color:rgba(255,255,255,.6);margin-top:2px}
.form-feedback{flex:1 1 100%;font-size:13px;color:var(--gold-400);min-height:18px}

/* ---------- footer ---------- */
.site-footer{background:var(--navy-900);color:rgba(255,255,255,.7);padding:56px 0 26px;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:36px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:16px;font-weight:700;margin-bottom:14px}
.footer-about{font-size:13.5px;line-height:1.85;color:rgba(255,255,255,.62);max-width:360px}
.footer-col h3{
  font-size:13px;letter-spacing:.12em;color:rgba(255,255,255,.92);
  margin-bottom:16px;font-weight:600;
}
.footer-links{display:grid;gap:10px}
.footer-links a{font-size:13.5px;color:rgba(255,255,255,.66);transition:color .18s ease,transform .18s ease;display:inline-block}
.footer-links a:hover{color:#fff;transform:translateX(3px)}
.footer-note{font-size:13px;line-height:1.9;color:rgba(255,255,255,.6)}
.footer-bottom{
  margin-top:38px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12.5px;color:rgba(255,255,255,.45);
}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .header-inner{gap:16px}
  .main-nav{
    position:absolute;top:64px;left:0;right:0;margin-left:0;
    flex-direction:column;align-items:stretch;gap:2px;
    background:#0b1e33;padding:12px 18px 18px;
    border-bottom:1px solid rgba(255,255,255,.1);
    box-shadow:0 20px 34px rgba(5,16,28,.42);
    display:none;
  }
  .main-nav.open{display:flex}
  .main-nav a{min-height:44px;padding:0 14px}
  .main-nav a.active::after{display:none}
  .nav-toggle{display:inline-flex}
  .hero-checks{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stats-panel{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .assure-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .feature-row{grid-template-columns:1fr;gap:26px}
  .feature-row.reverse .feature-media{order:0}
  .subscribe-inner{grid-template-columns:1fr;gap:28px;padding:52px 0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .section{padding:54px 0}
}
@media (max-width:768px){
  .container{padding:0 18px}
  .brand{font-size:15px}
  .hero .container{padding-top:44px;padding-bottom:44px}
  .hero-lead{font-size:14.5px}
  .hero-checks{grid-template-columns:1fr}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  .stats-panel{grid-template-columns:1fr 1fr}
  .assure-grid{grid-template-columns:1fr}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px}
  .section-desc{padding-left:0}
  .section-title{padding-left:14px}
  .log-item{grid-template-columns:1fr;gap:8px}
  .row-item{flex-wrap:wrap}
  .row-meta{align-self:flex-start}
  .post-row{flex-direction:column;gap:6px}
  .clock-bar{gap:16px;padding:18px}
  .clock-unit{min-width:56px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:520px){
  .header-actions .btn{display:none}
  .hero h1{font-size:26px}
  .stat-num{font-size:26px}
  .card,.post-card{padding:20px}
  .clock-digits{width:100%;justify-content:space-between}
  .clock-unit{flex:1 1 0;min-width:0}
  .btn{width:100%}
  .hero-actions{flex-direction:column;align-items:stretch}
  .subscribe-form{padding:16px}
}

/* roulang page: article */
:root{
 --navy-900:#08182a;
 --navy-800:#0b1e33;
 --navy-700:#102a45;
 --navy-600:#16395c;
 --blue-700:#15597f;
 --blue-600:#1a6f9e;
 --blue-500:#2287b8;
 --aqua-400:#3fb6c9;
 --gold-500:#d9932c;
 --gold-400:#f0b455;
 --ink:#12212f;
 --ink-soft:#4a5b6b;
 --ink-mute:#7b8ca0;
 --line:#e3e9f0;
 --line-strong:#cfdbe7;
 --bg:#f5f8fb;
 --bg-alt:#edf3f8;
 --white:#ffffff;
 --radius-s:8px;
 --radius:12px;
 --radius-l:18px;
 --shadow-s:0 1px 2px rgba(16,42,69,.06),0 4px 14px rgba(16,42,69,.05);
 --shadow-m:0 8px 26px rgba(16,42,69,.10);
 --shadow-l:0 18px 44px rgba(16,42,69,.16);
 --container:1180px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
 margin:0;
 font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
 font-size:15px;
 line-height:1.75;
 color:var(--ink);
 background:var(--bg);
 -webkit-font-smoothing:antialiased;
 text-rendering:optimizeLegibility;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
ul,ol{margin:0;padding:0}
h1,h2,h3,h4,p{margin:0}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
:focus-visible{outline:2px solid var(--aqua-400);outline-offset:2px;border-radius:6px}

/* ---------- header ---------- */
.site-header{
 position:sticky;top:0;z-index:60;
 background:rgba(11,30,51,.97);
 border-bottom:1px solid rgba(255,255,255,.09);
 transition:box-shadow .22s ease;
}
.site-header.is-stuck{box-shadow:0 10px 26px rgba(5,16,28,.34)}
.header-inner{display:flex;align-items:center;gap:26px;min-height:64px}
.brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:16px;font-weight:700;letter-spacing:.02em;white-space:nowrap;flex:0 0 auto}
.brand-mark{
 width:32px;height:32px;border-radius:9px;flex:0 0 auto;
 background:linear-gradient(135deg,var(--blue-500),var(--aqua-400));
 display:grid;place-items:center;
 box-shadow:0 4px 12px rgba(34,135,184,.36);
}
.brand-mark svg{width:18px;height:18px;stroke:#fff;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.main-nav{display:flex;align-items:center;gap:2px;margin-left:auto}
.main-nav a{
 position:relative;display:inline-flex;align-items:center;
 min-height:40px;padding:0 13px;border-radius:8px;
 font-size:14px;color:rgba(255,255,255,.74);
 transition:color .18s ease,background .18s ease;
}
.main-nav a:hover{color:#fff;background:rgba(255,255,255,.08)}
.main-nav a.active{color:#fff;background:rgba(255,255,255,.12)}
.main-nav a.active::after{
 content:"";position:absolute;left:13px;right:13px;bottom:6px;height:2px;
 border-radius:2px;background:var(--gold-400);
}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.nav-toggle{
 display:none;width:42px;height:42px;border-radius:8px;
 border:1px solid rgba(255,255,255,.22);
 align-items:center;justify-content:center;
 transition:background .18s ease;
}
.nav-toggle:hover{background:rgba(255,255,255,.1)}
.nav-toggle svg{width:20px;height:20px;stroke:#fff;fill:none;stroke-width:1.9;stroke-linecap:round}

/* ---------- buttons ---------- */
.btn{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 min-height:44px;padding:0 22px;border-radius:var(--radius-s);
 font-size:15px;font-weight:600;letter-spacing:.01em;
 border:1px solid transparent;
 transition:transform .18s ease,background .18s ease,box-shadow .18s ease,color .18s ease,border-color .18s ease;
}
.btn svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.btn-primary{background:var(--blue-600);color:#fff;box-shadow:0 7px 18px rgba(26,111,158,.30)}
.btn-primary:hover{background:var(--blue-700);transform:translateY(-2px);box-shadow:0 10px 22px rgba(26,111,158,.36)}
.btn-ghost{background:rgba(255,255,255,.06);color:#fff;border-color:rgba(255,255,255,.42)}
.btn-ghost:hover{background:rgba(255,255,255,.16);transform:translateY(-2px)}
.btn-gold{background:var(--gold-500);color:#231402;box-shadow:0 7px 18px rgba(217,147,44,.28)}
.btn-gold:hover{background:var(--gold-400);transform:translateY(-2px)}
.btn-outline{background:#fff;color:var(--navy-700);border-color:var(--line-strong)}
.btn-outline:hover{border-color:var(--blue-500);color:var(--blue-700);transform:translateY(-2px)}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px}

/* ---------- article hero ---------- */
.article-hero{
 position:relative;overflow:hidden;color:#fff;
 background:var(--navy-900) url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
}
.article-hero::after{
 content:"";position:absolute;inset:0;
 background:linear-gradient(165deg,rgba(6,18,32,.90) 0%,rgba(8,24,42,.92) 55%,rgba(10,32,54,.95) 100%);
}
.article-hero .container{position:relative;z-index:2;padding-top:34px;padding-bottom:52px}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.62);margin-bottom:22px}
.crumbs a{color:rgba(255,255,255,.82);transition:color .18s ease}
.crumbs a:hover{color:var(--gold-400)}
.crumbs span.sep{color:rgba(255,255,255,.34)}
.article-hero-grid{display:grid;grid-template-columns:minmax(0,1.32fr) minmax(0,.88fr);gap:44px;align-items:center}
.hero-badge{
 display:inline-flex;align-items:center;gap:8px;
 padding:6px 14px;border-radius:999px;
 background:rgba(63,182,201,.14);
 border:1px solid rgba(63,182,201,.38);
 color:#bfe9f2;font-size:13px;letter-spacing:.04em;
 margin-bottom:18px;
}
.hero-badge::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--aqua-400);box-shadow:0 0 0 4px rgba(63,182,201,.18)}
.article-hero h1{
 font-size:clamp(26px,3vw,40px);
 line-height:1.3;
 letter-spacing:-.015em;
}
.article-lead{
 max-width:720px;margin-top:16px;
 font-size:15px;line-height:1.85;color:rgba(255,255,255,.80);
}
.article-meta{
 display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;
 margin-top:22px;font-size:13px;color:rgba(255,255,255,.66);
}
.article-meta span{display:inline-flex;align-items:center;gap:7px}
.article-meta svg{width:15px;height:15px;stroke:var(--aqua-400);fill:none;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}
.trust-strip{
 display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;
}
.trust-strip .tag-pill{
 display:inline-flex;align-items:center;
 padding:5px 13px;border-radius:999px;
 font-size:12.5px;color:rgba(255,255,255,.80);
 border:1px solid rgba(255,255,255,.20);
 background:rgba(255,255,255,.06);
}
.article-cover{
 position:relative;border-radius:var(--radius-l);overflow:hidden;
 border:1px solid rgba(255,255,255,.18);
 box-shadow:var(--shadow-l);
 background:var(--navy-700);
}
.article-cover img{width:100%;aspect-ratio:16/10;object-fit:cover}
.article-cover figcaption{
 position:absolute;left:0;right:0;bottom:0;
 padding:26px 16px 12px;
 font-size:12.5px;color:rgba(255,255,255,.86);
 background:linear-gradient(to top,rgba(6,18,32,.82),rgba(6,18,32,0));
}

/* ---------- section ---------- */
.section{padding:56px 0}
.section--alt{background:var(--bg-alt)}
.section--tight{padding-top:34px}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:26px}
.section-title{font-size:23px;letter-spacing:-.01em;position:relative;padding-left:16px;line-height:1.4}
.section-title::before{
 content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:4px;
 background:linear-gradient(180deg,var(--blue-500),var(--aqua-400));
}
.section-sub{margin-top:8px;padding-left:16px;font-size:14px;color:var(--ink-mute);max-width:640px}

/* ---------- quick cards ---------- */
.quick-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.info-card{
 background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
 padding:22px;box-shadow:var(--shadow-s);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.info-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-m);border-color:var(--line-strong)}
.card-icon{
 width:40px;height:40px;border-radius:10px;display:grid;place-items:center;
 background:rgba(34,135,184,.10);color:var(--blue-700);margin-bottom:14px;
}
.card-icon svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}
.info-card h3{font-size:16px;margin-bottom:8px}
.info-card p{font-size:14px;color:var(--ink-soft);line-height:1.8}
.card-tag{
 display:inline-flex;margin-top:14px;padding:3px 10px;border-radius:999px;
 font-size:12px;color:var(--blue-700);background:rgba(34,135,184,.10);
 border:1px solid rgba(34,135,184,.18);
}

/* ---------- article body ---------- */
.article-shell{display:grid;grid-template-columns:minmax(0,1fr);gap:0}
.article-panel{
 background:var(--white);border:1px solid var(--line);border-radius:var(--radius-l);
 padding:38px 42px;box-shadow:var(--shadow-s);
 max-width:900px;margin:0 auto;
}
.article-panel > .article-body > :first-child{margin-top:0}
.article-body{font-size:15.5px;color:var(--ink-soft);line-height:1.9}
.article-body p{margin:0 0 16px}
.article-body h2{
 font-size:21px;color:var(--ink);line-height:1.45;
 margin:34px 0 14px;padding-left:13px;
 border-left:4px solid var(--blue-500);
}
.article-body h3{font-size:17.5px;color:var(--ink);margin:26px 0 10px}
.article-body strong{color:var(--navy-700);font-weight:700}
.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);border-bottom:1px solid rgba(26,111,158,.28);transition:color .18s ease,border-color .18s ease}
.article-body a:hover{color:var(--blue-700);border-color:var(--blue-600)}
.article-body img{border-radius:var(--radius);margin:20px 0;box-shadow:var(--shadow-s)}
.article-body blockquote{
 margin:20px 0;padding:16px 20px;
 background:var(--bg-alt);border-left:4px solid var(--aqua-400);
 border-radius:0 var(--radius) var(--radius) 0;
 color:var(--ink-soft);font-size:14.5px;
}
.article-body table{width:100%;border-collapse:collapse;margin:20px 0;font-size:14px}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 12px;text-align:left}
.article-body th{background:var(--bg-alt);color:var(--ink);font-weight:600}
.article-empty{
 text-align:center;padding:26px 10px 8px;
}
.article-empty h2{font-size:21px;color:var(--ink);margin-bottom:10px}
.article-empty p{color:var(--ink-soft);margin-bottom:20px}

/* ---------- check table ---------- */
.table-wrap{
 background:var(--white);border:1px solid var(--line);border-radius:var(--radius-l);
 box-shadow:var(--shadow-s);overflow:hidden;
}
.plain-table{width:100%;border-collapse:collapse;font-size:14px}
.plain-table thead th{
 background:var(--navy-700);color:#fff;font-weight:600;
 text-align:left;padding:13px 18px;font-size:13.5px;letter-spacing:.02em;
}
.plain-table tbody td{padding:14px 18px;border-top:1px solid var(--line);color:var(--ink-soft);vertical-align:top}
.plain-table tbody td:first-child{color:var(--ink);font-weight:600;white-space:nowrap}
.plain-table tbody tr:nth-child(even){background:rgba(237,243,248,.55)}
.status-badge{
 display:inline-flex;align-items:center;gap:6px;
 padding:3px 10px;border-radius:999px;font-size:12px;white-space:nowrap;
}
.status-ok{background:rgba(63,182,201,.14);color:#12667a;border:1px solid rgba(63,182,201,.30)}
.status-wait{background:rgba(217,147,44,.14);color:#8a5a10;border:1px solid rgba(217,147,44,.30)}

/* ---------- reading list ---------- */
.read-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.read-card{
 display:flex;flex-direction:column;gap:10px;
 background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
 padding:20px;box-shadow:var(--shadow-s);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.read-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-m);border-color:var(--blue-500)}
.read-card h3{font-size:15.5px;line-height:1.6;color:var(--ink)}
.read-card p{font-size:13.5px;color:var(--ink-mute);line-height:1.75}
.read-card .read-more{margin-top:auto;font-size:13px;font-weight:600;color:var(--blue-700);display:inline-flex;align-items:center;gap:6px}
.read-card:hover .read-more{color:var(--blue-600)}

/* ---------- faq ---------- */
.faq-list{display:grid;gap:12px;max-width:900px;margin:0 auto}
.faq-item{
 background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
 box-shadow:var(--shadow-s);overflow:hidden;
 transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item[open]{border-color:var(--line-strong);box-shadow:var(--shadow-m)}
.faq-item summary{
 list-style:none;cursor:pointer;
 display:flex;align-items:center;justify-content:space-between;gap:14px;
 padding:16px 20px;font-size:15px;font-weight:600;color:var(--ink);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
 content:"+";font-size:19px;font-weight:500;color:var(--blue-600);
 transition:transform .2s ease;line-height:1;
}
.faq-item[open] summary::after{content:"–";color:var(--gold-500)}
.faq-item .faq-body{padding:0 20px 18px;font-size:14px;color:var(--ink-soft);line-height:1.85}

/* ---------- subscribe ---------- */
.subscribe-band{
 position:relative;overflow:hidden;color:#fff;
 background:var(--navy-800) url('/assets/images/backpic/back-5.webp') center/cover no-repeat;
 border-radius:var(--radius-l);
 padding:40px 44px;
 box-shadow:var(--shadow-m);
}
.subscribe-band::before{
 content:"";position:absolute;inset:0;
 background:linear-gradient(120deg,rgba(8,24,42,.94),rgba(16,42,69,.86));
}
.subscribe-inner{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.9fr);gap:32px;align-items:center}
.subscribe-inner h2{font-size:23px;line-height:1.4;margin-bottom:10px}
.subscribe-inner p{font-size:14px;color:rgba(255,255,255,.78);line-height:1.8;max-width:460px}
.sub-form{display:flex;flex-wrap:wrap;gap:10px}
.sub-form input{
 flex:1 1 200px;min-height:44px;padding:0 16px;
 border-radius:var(--radius-s);border:1px solid rgba(255,255,255,.28);
 background:rgba(255,255,255,.10);color:#fff;font-size:14px;
 transition:border-color .18s ease,background .18s ease;
}
.sub-form input::placeholder{color:rgba(255,255,255,.56)}
.sub-form input:focus{background:rgba(255,255,255,.16);border-color:var(--aqua-400);outline:none}
.form-hint{flex:1 0 100%;font-size:13px;color:var(--gold-400);min-height:18px}

/* ---------- footer ---------- */
.site-footer{
 background:var(--navy-900);color:rgba(255,255,255,.68);
 padding:46px 0 22px;margin-top:60px;
 border-top:1px solid rgba(255,255,255,.08);
}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:36px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:16px;font-weight:700;margin-bottom:14px}
.footer-about{font-size:13.5px;line-height:1.85;color:rgba(255,255,255,.62);max-width:400px}
.footer-col h3{font-size:14px;color:#fff;margin-bottom:14px;letter-spacing:.02em}
.footer-links{display:flex;flex-direction:column;gap:9px;font-size:13.5px}
.footer-links a{color:rgba(255,255,255,.66);transition:color .18s ease,transform .18s ease}
.footer-links a:hover{color:var(--gold-400);transform:translateX(2px)}
.footer-note{font-size:12.5px;color:rgba(255,255,255,.48);line-height:1.8}
.footer-bottom{
 display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
 margin-top:34px;padding-top:18px;
 border-top:1px solid rgba(255,255,255,.10);
 font-size:12.5px;color:rgba(255,255,255,.48);
}

/* ---------- responsive ---------- */
@media (max-width:1024px){
 .article-hero-grid{grid-template-columns:1fr;gap:30px}
 .article-cover{max-width:560px}
 .quick-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
 .read-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
 .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
 .subscribe-inner{grid-template-columns:1fr}
}
@media (max-width:900px){
 .nav-toggle{display:inline-flex}
 .main-nav{
  position:absolute;top:64px;left:0;right:0;
  display:none;flex-direction:column;align-items:stretch;gap:4px;
  padding:12px 20px 18px;
  background:var(--navy-800);
  border-bottom:1px solid rgba(255,255,255,.10);
  box-shadow:0 18px 34px rgba(5,16,28,.40);
 }
 .main-nav.is-open{display:flex}
 .main-nav a{padding:0 12px;min-height:44px;font-size:14.5px}
 .main-nav a.active::after{display:none}
 .header-actions .btn{display:none}
}
@media (max-width:768px){
 .container{padding:0 18px}
 .section{padding:44px 0}
 .article-panel{padding:26px 20px}
 .quick-grid{grid-template-columns:1fr}
 .read-grid{grid-template-columns:1fr}
 .footer-grid{grid-template-columns:1fr;gap:26px}
 .subscribe-band{padding:28px 22px}
 .section-title{font-size:20px}
 .plain-table thead th,.plain-table tbody td{padding:11px 12px;font-size:13px}
 .plain-table tbody td:first-child{white-space:normal}
}
@media (max-width:520px){
 .brand span:last-child{font-size:14.5px}
 .article-hero .container{padding-top:24px;padding-bottom:38px}
 .article-meta{gap:8px 14px;font-size:12.5px}
 .sub-form{flex-direction:column}
 .sub-form .btn{width:100%}
 .article-panel{padding:20px 16px;border-radius:var(--radius)}
 .footer-bottom{flex-direction:column}
}

/* roulang page: category1 */
:root{
 --navy-900:#08182a;
 --navy-800:#0b1e33;
 --navy-700:#102a45;
 --navy-600:#16395c;
 --blue-700:#15597f;
 --blue-600:#1a6f9e;
 --blue-500:#2287b8;
 --aqua-400:#3fb6c9;
 --gold-500:#d9932c;
 --gold-400:#f0b455;
 --ink:#12212f;
 --ink-soft:#4a5b6b;
 --ink-mute:#7b8ca0;
 --line:#e3e9f0;
 --line-strong:#cfdbe7;
 --bg:#f5f8fb;
 --bg-alt:#edf3f8;
 --white:#ffffff;
 --radius-s:8px;
 --radius:12px;
 --radius-l:18px;
 --shadow-s:0 1px 2px rgba(16,42,69,.06),0 4px 14px rgba(16,42,69,.05);
 --shadow-m:0 8px 26px rgba(16,42,69,.10);
 --shadow-l:0 18px 44px rgba(16,42,69,.16);
 --container:1180px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
 margin:0;
 font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
 font-size:15px;
 line-height:1.75;
 color:var(--ink);
 background:var(--bg);
 -webkit-font-smoothing:antialiased;
 text-rendering:optimizeLegibility;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
h1,h2,h3,h4{margin:0;line-height:1.32;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
strong{font-weight:700;color:var(--navy-700)}
:focus-visible{outline:2px solid var(--aqua-400);outline-offset:3px;border-radius:6px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}

/* ---------- header ---------- */
.site-header{
 position:sticky;top:0;z-index:60;
 background:rgba(11,30,51,.97);
 border-bottom:1px solid rgba(255,255,255,.09);
 transition:box-shadow .22s ease;
}
.site-header.is-stuck{box-shadow:0 10px 26px rgba(5,16,28,.34)}
.header-inner{display:flex;align-items:center;gap:26px;min-height:64px}
.brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:16px;font-weight:700;letter-spacing:.02em;white-space:nowrap;flex:0 0 auto}
.brand-mark{
 width:32px;height:32px;border-radius:9px;flex:0 0 auto;
 background:linear-gradient(135deg,var(--blue-500),var(--aqua-400));
 display:grid;place-items:center;
 box-shadow:0 4px 12px rgba(34,135,184,.36);
}
.brand-mark svg{width:18px;height:18px;stroke:#fff;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.main-nav{display:flex;align-items:center;gap:2px;margin-left:auto}
.main-nav a{
 position:relative;display:inline-flex;align-items:center;
 min-height:40px;padding:0 13px;border-radius:8px;
 font-size:14px;color:rgba(255,255,255,.74);
 transition:color .18s ease,background .18s ease;
}
.main-nav a:hover{color:#fff;background:rgba(255,255,255,.08)}
.main-nav a.active{color:#fff;background:rgba(255,255,255,.12)}
.main-nav a.active::after{
 content:"";position:absolute;left:13px;right:13px;bottom:6px;height:2px;
 border-radius:2px;background:var(--gold-400);
}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.nav-toggle{
 display:none;width:42px;height:42px;border-radius:8px;
 border:1px solid rgba(255,255,255,.22);
 align-items:center;justify-content:center;
 transition:background .18s ease;
}
.nav-toggle:hover{background:rgba(255,255,255,.1)}
.nav-toggle svg{width:20px;height:20px;stroke:#fff;fill:none;stroke-width:1.9;stroke-linecap:round}

/* ---------- buttons ---------- */
.btn{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 min-height:44px;padding:0 22px;border-radius:var(--radius-s);
 font-size:15px;font-weight:600;letter-spacing:.01em;
 border:1px solid transparent;
 transition:transform .18s ease,background .18s ease,box-shadow .18s ease,color .18s ease,border-color .18s ease;
}
.btn svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.btn-primary{background:var(--blue-600);color:#fff;box-shadow:0 7px 18px rgba(26,111,158,.30)}
.btn-primary:hover{background:var(--blue-700);transform:translateY(-2px);box-shadow:0 10px 22px rgba(26,111,158,.36)}
.btn-ghost{background:rgba(255,255,255,.06);color:#fff;border-color:rgba(255,255,255,.42)}
.btn-ghost:hover{background:rgba(255,255,255,.16);transform:translateY(-2px)}
.btn-gold{background:var(--gold-500);color:#231402;box-shadow:0 7px 18px rgba(217,147,44,.28)}
.btn-gold:hover{background:var(--gold-400);transform:translateY(-2px)}
.btn-outline{background:#fff;color:var(--navy-700);border-color:var(--line-strong)}
.btn-outline:hover{border-color:var(--blue-500);color:var(--blue-700);transform:translateY(-2px)}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px}

/* ---------- page hero ---------- */
.page-hero{
 position:relative;overflow:hidden;color:#fff;
 background:var(--navy-900) url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
}
.page-hero::after{
 content:"";position:absolute;inset:0;
 background:linear-gradient(165deg,rgba(6,18,32,.90) 0%,rgba(8,24,42,.92) 55%,rgba(10,32,54,.95) 100%);
}
.page-hero .container{position:relative;z-index:2}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding-top:22px;font-size:13px;color:rgba(255,255,255,.56)}
.crumbs a{color:rgba(255,255,255,.74);transition:color .18s ease}
.crumbs a:hover{color:#fff}
.crumbs span{color:rgba(255,255,255,.86)}
.hero-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:48px;align-items:center;padding:34px 0 58px}
.hero-badge{
 display:inline-flex;align-items:center;gap:8px;
 padding:6px 14px;border-radius:999px;
 background:rgba(63,182,201,.14);
 border:1px solid rgba(63,182,201,.38);
 color:#bfe9f2;font-size:13px;letter-spacing:.04em;
 margin-bottom:18px;
}
.hero-badge::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--aqua-400);box-shadow:0 0 0 4px rgba(63,182,201,.18)}
.page-hero h1{font-size:clamp(28px,3.2vw,42px);line-height:1.26;letter-spacing:-.015em;max-width:720px}
.hero-lead{max-width:640px;margin-top:16px;font-size:15.5px;line-height:1.85;color:rgba(255,255,255,.82)}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.tag-pill{
 display:inline-flex;align-items:center;
 padding:5px 13px;border-radius:999px;
 font-size:13px;color:rgba(255,255,255,.78);
 border:1px solid rgba(255,255,255,.2);
 background:rgba(255,255,255,.05);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-figure{
 border-radius:var(--radius-l);overflow:hidden;
 border:1px solid rgba(255,255,255,.18);
 box-shadow:var(--shadow-l);
 background:rgba(255,255,255,.05);
}
.hero-figure img{width:100%;aspect-ratio:4/3;object-fit:cover}
.hero-figure figcaption{
 padding:12px 16px;font-size:13px;color:rgba(255,255,255,.72);
 border-top:1px solid rgba(255,255,255,.12);
 background:rgba(6,18,32,.55);
}

/* ---------- sections ---------- */
.section{padding:64px 0;background:var(--white)}
.section--alt{background:var(--bg-alt)}
.section-head{max-width:760px;margin-bottom:34px}
.eyebrow{
 display:inline-flex;align-items:center;gap:8px;
 font-size:13px;font-weight:600;letter-spacing:.06em;
 color:var(--blue-600);margin-bottom:12px;
}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--gold-500)}
.section-head h2{font-size:clamp(22px,2.2vw,30px)}
.section-head p{margin-top:12px;font-size:14.5px;line-height:1.8;color:var(--ink-soft)}

/* ---------- stats band ---------- */
.stats-band{background:var(--white);border-bottom:1px solid var(--line)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.stat-item{padding:28px 24px;border-left:1px solid var(--line)}
.stat-item:first-child{border-left:0}
.stat-num{display:block;font-size:30px;font-weight:700;line-height:1.1;color:var(--blue-700);letter-spacing:-.02em}
.stat-num em{font-style:normal;font-size:15px;font-weight:600;color:var(--ink-mute);margin-left:6px}
.stat-label{margin-top:8px;font-size:14px;font-weight:600;color:var(--navy-700)}
.stat-desc{margin-top:6px;font-size:13px;line-height:1.7;color:var(--ink-mute)}

/* ---------- mechanism cards ---------- */
.mech-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.mech-card{
 display:flex;gap:16px;
 padding:24px;
 background:var(--white);
 border:1px solid var(--line);
 border-radius:var(--radius);
 box-shadow:var(--shadow-s);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.mech-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-m);border-color:var(--line-strong)}
.mech-icon{
 width:46px;height:46px;flex:0 0 auto;border-radius:11px;
 display:grid;place-items:center;
 background:rgba(34,135,184,.10);
 border:1px solid rgba(34,135,184,.18);
}
.mech-icon svg{width:22px;height:22px;fill:none;stroke:var(--blue-600);stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.mech-card h3{font-size:17px;margin-bottom:8px}
.mech-card p{font-size:14px;line-height:1.8;color:var(--ink-soft)}
.mech-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.chip{
 display:inline-flex;align-items:center;
 padding:3px 10px;border-radius:999px;
 font-size:12.5px;color:var(--blue-700);
 background:rgba(34,135,184,.09);
 border:1px solid rgba(34,135,184,.16);
}

/* ---------- flow ---------- */
.flow-wrap{display:grid;grid-template-columns:.85fr 1.15fr;gap:44px;align-items:start}
.flow-figure{border-radius:var(--radius-l);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-m);background:#fff}
.flow-figure img{width:100%;aspect-ratio:4/3;object-fit:cover}
.flow-figure figcaption{padding:12px 16px;font-size:13px;color:var(--ink-mute);border-top:1px solid var(--line)}
.flow-list li{
 position:relative;display:flex;gap:16px;
 padding:0 0 24px 0;
}
.flow-list li::before{
 content:"";position:absolute;left:15px;top:34px;bottom:2px;width:2px;
 background:var(--line-strong);
}
.flow-list li:last-child::before{display:none}
.flow-index{
 width:32px;height:32px;flex:0 0 auto;border-radius:50%;
 display:grid;place-items:center;
 font-size:13.5px;font-weight:700;color:#fff;
 background:var(--blue-600);
 box-shadow:0 4px 12px rgba(26,111,158,.28);
}
.flow-body h3{font-size:16px;margin-bottom:6px}
.flow-body p{font-size:14px;line-height:1.78;color:var(--ink-soft)}

/* ---------- table ---------- */
.table-wrap{
 overflow-x:auto;
 background:var(--white);
 border:1px solid var(--line);
 border-radius:var(--radius);
 box-shadow:var(--shadow-s);
}
.fish-table{width:100%;border-collapse:collapse;min-width:640px}
.fish-table thead th{
 background:var(--navy-800);color:#fff;
 font-size:13.5px;font-weight:600;text-align:left;letter-spacing:.03em;
 padding:14px 18px;white-space:nowrap;
}
.fish-table tbody td{padding:13px 18px;border-top:1px solid var(--line);font-size:14px;color:var(--ink-soft)}
.fish-table tbody td:first-child{color:var(--navy-700);font-weight:600}
.fish-table tbody tr{transition:background .18s ease}
.fish-table tbody tr:hover{background:var(--bg-alt)}
.table-note{margin-top:14px;font-size:13px;line-height:1.75;color:var(--ink-mute)}

/* ---------- rooms ---------- */
.room-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.room-card{
 background:var(--white);
 border:1px solid var(--line);
 border-radius:var(--radius);
 box-shadow:var(--shadow-s);
 overflow:hidden;
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.room-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-m);border-color:var(--line-strong)}
.room-top{height:6px;background:var(--blue-500)}
.room-card:nth-child(2) .room-top{background:var(--aqua-400)}
.room-card:nth-child(3) .room-top{background:var(--gold-500)}
.room-body{padding:22px}
.room-body h3{font-size:17px;margin-bottom:4px}
.room-sub{font-size:12.5px;letter-spacing:.05em;color:var(--ink-mute);margin-bottom:12px}
.room-body p{font-size:14px;line-height:1.78;color:var(--ink-soft)}
.room-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}

/* ---------- myths ---------- */
.myth-wrap{display:grid;grid-template-columns:1.15fr .85fr;gap:44px;align-items:start}
.myth-list li{
 display:flex;gap:14px;
 padding:18px 0;
 border-bottom:1px dashed var(--line-strong);
}
.myth-list li:last-child{border-bottom:0;padding-bottom:0}
.myth-mark{
 width:26px;height:26px;flex:0 0 auto;border-radius:8px;
 display:grid;place-items:center;
 background:rgba(217,147,44,.14);
 border:1px solid rgba(217,147,44,.28);
}
.myth-mark svg{width:14px;height:14px;fill:none;stroke:var(--gold-500);stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round}
.myth-item h3{font-size:15.5px;margin-bottom:5px}
.myth-item p{font-size:14px;line-height:1.78;color:var(--ink-soft)}
.myth-figure{border-radius:var(--radius-l);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-m);background:#fff}
.myth-figure img{width:100%;aspect-ratio:3/4;object-fit:cover}
.myth-figure figcaption{padding:12px 16px;font-size:13px;color:var(--ink-mute);border-top:1px solid var(--line)}

/* ---------- timeline ---------- */
.timeline{position:relative;padding-left:28px;max-width:820px}
.timeline::before{content:"";position:absolute;left:7px;top:8px;bottom:8px;width:2px;background:var(--line-strong)}
.timeline li{position:relative;padding-bottom:24px}
.timeline li:last-child{padding-bottom:0}
.timeline li::before{
 content:"";position:absolute;left:-28px;top:6px;
 width:12px;height:12px;border-radius:50%;
 background:var(--blue-500);
 box-shadow:0 0 0 3px rgba(34,135,184,.16);
}
.timeline h3{font-size:15.5px;margin-bottom:5px}
.timeline p{font-size:14px;line-height:1.78;color:var(--ink-soft)}

/* ---------- faq ---------- */
.faq-list{max-width:880px;display:grid;gap:12px}
.faq-item{
 background:var(--white);
 border:1px solid var(--line);
 border-radius:var(--radius);
 box-shadow:var(--shadow-s);
 transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item[open]{border-color:var(--line-strong);box-shadow:var(--shadow-m)}
.faq-item summary{
 display:flex;align-items:center;justify-content:space-between;gap:16px;
 padding:17px 22px;
 font-size:15.5px;font-weight:600;color:var(--navy-700);
 list-style:none;cursor:pointer;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
 content:"";width:9px;height:9px;flex:0 0 auto;
 border-right:2px solid var(--blue-600);
 border-bottom:2px solid var(--blue-600);
 transform:rotate(45deg);
 transition:transform .2s ease;
 margin-right:4px;
}
.faq-item[open] summary::after{transform:rotate(-135deg)}
.faq-body{padding:0 22px 18px;font-size:14px;line-height:1.82;color:var(--ink-soft)}

/* ---------- cta ---------- */
.cta-section{
 position:relative;overflow:hidden;color:#fff;
 background:var(--navy-800) url('/assets/images/backpic/back-5.webp') center/cover no-repeat;
}
.cta-section::after{content:"";position:absolute;inset:0;background:linear-gradient(150deg,rgba(6,18,32,.94),rgba(16,42,69,.92))}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.1fr .9fr;gap:44px;align-items:center;padding:58px 0}
.cta-inner h2{font-size:clamp(22px,2.4vw,30px)}
.cta-inner p{margin-top:14px;font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.8);max-width:560px}
.subscribe-form{display:flex;gap:12px;flex-wrap:wrap}
.subscribe-form input{
 flex:1 1 220px;min-height:46px;
 padding:0 16px;border-radius:var(--radius-s);
 border:1px solid rgba(255,255,255,.26);
 background:rgba(255,255,255,.08);
 color:#fff;font-size:14.5px;
 transition:border-color .18s ease,background .18s ease;
}
.subscribe-form input::placeholder{color:rgba(255,255,255,.52)}
.subscribe-form input:focus{outline:none;border-color:var(--aqua-400);background:rgba(255,255,255,.14)}
.form-note{margin-top:12px;font-size:13px;color:rgba(255,255,255,.62);min-height:20px}

/* ---------- footer ---------- */
.site-footer{background:var(--navy-900);color:rgba(255,255,255,.7);padding:56px 0 0;border-top:1px solid rgba(255,255,255,.08)}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:44px;padding-bottom:40px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:16px;font-weight:700;margin-bottom:14px}
.footer-about{font-size:13.5px;line-height:1.82;color:rgba(255,255,255,.6);max-width:360px}
.footer-col h3{font-size:14px;font-weight:600;color:#fff;letter-spacing:.05em;margin-bottom:14px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:13.5px;color:rgba(255,255,255,.64);transition:color .18s ease,transform .18s ease}
.footer-links a:hover{color:var(--gold-400);transform:translateX(2px)}
.footer-note{font-size:13px;line-height:1.75;color:rgba(255,255,255,.48)}
.footer-bottom{
 display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
 padding:18px 0;border-top:1px solid rgba(255,255,255,.1);
 font-size:13px;color:rgba(255,255,255,.48);
}
.footer-bottom span{word-break:break-all}

/* ---------- responsive ---------- */
@media(max-width:1024px){
 .hero-grid{grid-template-columns:1fr;gap:32px;padding-bottom:48px}
 .hero-figure{max-width:640px}
 .flow-wrap,.myth-wrap,.cta-inner{grid-template-columns:1fr;gap:30px}
 .myth-figure{max-width:420px}
 .stats-grid{grid-template-columns:repeat(2,1fr)}
 .stat-item:nth-child(3){border-left:0}
 .stat-item:nth-child(n+3){border-top:1px solid var(--line)}
 .room-grid{grid-template-columns:repeat(2,1fr)}
 .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media(max-width:880px){
 .header-inner{gap:14px}
 .nav-toggle{display:inline-flex}
 .main-nav{
  position:absolute;left:0;right:0;top:100%;
  flex-direction:column;align-items:stretch;gap:4px;
  margin-left:0;padding:12px 18px 18px;
  background:var(--navy-800);
  border-bottom:1px solid rgba(255,255,255,.1);
  box-shadow:0 18px 34px rgba(5,16,28,.4);
  display:none;
 }
 .main-nav.open{display:flex}
 .main-nav a{min-height:46px;padding:0 14px;font-size:15px}
 .main-nav a.active::after{display:none}
 .main-nav a.active{background:rgba(63,182,201,.16);color:#fff}
 .header-actions{margin-left:auto}
 .mech-grid{grid-template-columns:1fr}
}
@media(max-width:768px){
 .section{padding:48px 0}
 .container{padding:0 18px}
 .hero-grid{padding:26px 0 44px}
 .hero-lead{font-size:14.5px}
 .stats-grid{grid-template-columns:1fr}
 .stat-item{border-left:0;border-top:1px solid var(--line);padding:20px 18px}
 .stat-item:first-child{border-top:0}
 .room-grid{grid-template-columns:1fr}
 .footer-grid{grid-template-columns:1fr;gap:28px}
 .footer-bottom{flex-direction:column;gap:6px}
 .brand span:last-child{font-size:15px}
 .cta-inner{padding:44px 0}
}
@media(max-width:520px){
 .page-hero h1{font-size:26px}
 .section-head h2{font-size:21px}
 .mech-card{flex-direction:column;gap:14px;padding:20px}
 .subscribe-form{flex-direction:column}
 .subscribe-form input,.subscribe-form .btn{width:100%}
 .hero-actions .btn{width:100%}
}

/* roulang page: category2 */
:root{
 --navy-900:#08182a;
 --navy-800:#0b1e33;
 --navy-700:#102a45;
 --navy-600:#16395c;
 --blue-700:#15597f;
 --blue-600:#1a6f9e;
 --blue-500:#2287b8;
 --aqua-400:#3fb6c9;
 --gold-500:#d9932c;
 --gold-400:#f0b455;
 --ink:#12212f;
 --ink-soft:#4a5b6b;
 --ink-mute:#7b8ca0;
 --line:#e3e9f0;
 --line-strong:#cfdbe7;
 --bg:#f5f8fb;
 --bg-alt:#edf3f8;
 --white:#ffffff;
 --radius-s:8px;
 --radius:12px;
 --radius-l:18px;
 --shadow-s:0 1px 2px rgba(16,42,69,.06),0 4px 14px rgba(16,42,69,.05);
 --shadow-m:0 8px 26px rgba(16,42,69,.10);
 --shadow-l:0 18px 44px rgba(16,42,69,.16);
 --container:1180px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
 margin:0;
 font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
 font-size:15px;line-height:1.75;color:var(--ink);background:var(--bg);
 -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
button{cursor:pointer;border:0;background:none;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:3px solid var(--aqua-400);outline-offset:3px;border-radius:4px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
/* ---------- header ---------- */
.site-header{
 position:sticky;top:0;z-index:60;
 background:rgba(11,30,51,.97);
 border-bottom:1px solid rgba(255,255,255,.09);
 transition:box-shadow .22s ease;
}
.site-header.is-stuck{box-shadow:0 10px 26px rgba(5,16,28,.34)}
.header-inner{display:flex;align-items:center;gap:26px;min-height:64px}
.brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:16px;font-weight:700;letter-spacing:.02em;white-space:nowrap;flex:0 0 auto}
.brand-mark{
 width:32px;height:32px;border-radius:9px;flex:0 0 auto;
 background:linear-gradient(135deg,var(--blue-500),var(--aqua-400));
 display:grid;place-items:center;
 box-shadow:0 4px 12px rgba(34,135,184,.36);
}
.brand-mark svg{width:18px;height:18px;stroke:#fff;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.main-nav{display:flex;align-items:center;gap:2px;margin-left:auto}
.main-nav a{
 position:relative;display:inline-flex;align-items:center;
 min-height:40px;padding:0 13px;border-radius:8px;
 font-size:14px;color:rgba(255,255,255,.74);
 transition:color .18s ease,background .18s ease;
}
.main-nav a:hover{color:#fff;background:rgba(255,255,255,.08)}
.main-nav a.active{color:#fff;background:rgba(255,255,255,.12)}
.main-nav a.active::after{
 content:"";position:absolute;left:13px;right:13px;bottom:6px;height:2px;
 border-radius:2px;background:var(--gold-400);
}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.nav-toggle{
 display:none;width:42px;height:42px;border-radius:8px;
 border:1px solid rgba(255,255,255,.22);
 align-items:center;justify-content:center;
 transition:background .18s ease;
}
.nav-toggle:hover{background:rgba(255,255,255,.1)}
.nav-toggle svg{width:20px;height:20px;stroke:#fff;fill:none;stroke-width:1.9;stroke-linecap:round}
/* ---------- buttons ---------- */
.btn{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 min-height:44px;padding:0 22px;border-radius:var(--radius-s);
 font-size:15px;font-weight:600;letter-spacing:.01em;
 border:1px solid transparent;
 transition:transform .18s ease,background .18s ease,box-shadow .18s ease,color .18s ease,border-color .18s ease;
}
.btn svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.btn-primary{background:var(--blue-600);color:#fff;box-shadow:0 7px 18px rgba(26,111,158,.30)}
.btn-primary:hover{background:var(--blue-700);transform:translateY(-2px);box-shadow:0 10px 22px rgba(26,111,158,.36)}
.btn-ghost{background:rgba(255,255,255,.06);color:#fff;border-color:rgba(255,255,255,.42)}
.btn-ghost:hover{background:rgba(255,255,255,.16);transform:translateY(-2px)}
.btn-gold{background:var(--gold-500);color:#231402;box-shadow:0 7px 18px rgba(217,147,44,.28)}
.btn-gold:hover{background:var(--gold-400);transform:translateY(-2px)}
.btn-outline{background:#fff;color:var(--navy-700);border-color:var(--line-strong)}
.btn-outline:hover{border-color:var(--blue-500);color:var(--blue-700);transform:translateY(-2px)}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px}
/* ---------- hero ---------- */
.page-hero{
 position:relative;overflow:hidden;color:#fff;
 background:var(--navy-900) url('/assets/images/backpic/back-4.webp') center/cover no-repeat;
}
.page-hero::after{
 content:"";position:absolute;inset:0;
 background:linear-gradient(158deg,rgba(6,18,32,.93) 0%,rgba(8,24,42,.90) 52%,rgba(16,57,92,.90) 100%);
}
.page-hero .container{position:relative;z-index:2;padding-top:40px;padding-bottom:56px}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.6);margin-bottom:26px;flex-wrap:wrap}
.crumb a{color:rgba(255,255,255,.78)}
.crumb a:hover{color:#fff;text-decoration:underline}
.crumb span{opacity:.5}
.hero-grid{display:grid;grid-template-columns:1.14fr .86fr;gap:46px;align-items:center}
.hero-badge{
 display:inline-flex;align-items:center;gap:8px;
 padding:6px 14px;border-radius:999px;
 background:rgba(63,182,201,.14);
 border:1px solid rgba(63,182,201,.38);
 color:#bfe9f2;font-size:13px;letter-spacing:.04em;margin-bottom:18px;
}
.hero-badge::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--aqua-400);box-shadow:0 0 0 4px rgba(63,182,201,.18)}
.page-hero h1{font-size:clamp(27px,3.1vw,40px);line-height:1.28;letter-spacing:-.015em}
.page-hero h1 em{font-style:normal;color:var(--gold-400)}
.hero-lead{max-width:660px;margin-top:16px;font-size:15px;line-height:1.85;color:rgba(255,255,255,.82)}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.tag-pill{
 display:inline-flex;align-items:center;
 padding:5px 13px;border-radius:999px;font-size:13px;
 color:rgba(255,255,255,.8);
 border:1px solid rgba(255,255,255,.2);
 background:rgba(255,255,255,.05);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
/* tier panel */
.tier-panel{
 background:rgba(255,255,255,.07);
 border:1px solid rgba(255,255,255,.16);
 border-radius:var(--radius-l);
 padding:24px 22px;
 backdrop-filter:blur(4px);
 box-shadow:var(--shadow-l);
}
.tier-panel-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:18px}
.tier-panel-head h2{font-size:15px;font-weight:700;letter-spacing:.02em;color:#fff}
.tier-panel-head span{font-size:12px;color:rgba(255,255,255,.55);letter-spacing:.08em}
.tier-top{display:flex;align-items:center;gap:20px}
.dial{
 --p:62%;
 position:relative;width:142px;height:142px;flex:0 0 auto;border-radius:50%;
 background:conic-gradient(var(--aqua-400) var(--p), rgba(255,255,255,.13) 0);
 display:grid;place-items:center;
}
.dial::before{content:"";position:absolute;inset:13px;border-radius:50%;background:rgba(8,24,42,.94);border:1px solid rgba(255,255,255,.08)}
.dial-inner{position:relative;text-align:center;line-height:1.3}
.dial-inner strong{display:block;font-size:26px;font-weight:700;color:#fff;letter-spacing:-.02em}
.dial-inner small{display:block;font-size:11.5px;color:rgba(255,255,255,.6);letter-spacing:.06em;margin-top:2px}
.tier-meter{flex:1 1 auto;min-width:0}
.tier-meter p{font-size:12.5px;color:rgba(255,255,255,.62);line-height:1.7}
.tier-meter strong{color:var(--gold-400);font-weight:700}
.tier-list{margin-top:20px;display:grid;gap:8px}
.tier-row{
 display:flex;align-items:center;justify-content:space-between;gap:10px;
 padding:9px 12px;border-radius:10px;
 background:rgba(255,255,255,.05);
 border:1px solid rgba(255,255,255,.1);
 font-size:13.5px;color:rgba(255,255,255,.86);
 transition:background .18s ease,border-color .18s ease;
}
.tier-row:hover{background:rgba(255,255,255,.11);border-color:rgba(63,182,201,.42)}
.tier-row b{font-weight:700;color:#fff}
.tier-row i{font-style:normal;font-size:12px;color:rgba(255,255,255,.55)}
.tier-row.on{background:rgba(63,182,201,.16);border-color:rgba(63,182,201,.46)}
/* ---------- sections ---------- */
.section{padding:64px 0}
.section--alt{background:var(--bg-alt)}
.section--dark{background:var(--navy-800);color:#fff}
.section-head{max-width:780px;margin-bottom:34px}
.eyebrow{
 display:inline-flex;align-items:center;gap:9px;
 font-size:12.5px;font-weight:700;letter-spacing:.14em;
 color:var(--blue-600);text-transform:uppercase;
}
.eyebrow::before{content:"";width:26px;height:2px;border-radius:2px;background:var(--gold-500)}
.section-title{font-size:clamp(21px,2.3vw,29px);line-height:1.36;margin-top:12px;color:var(--navy-800);letter-spacing:-.01em}
.section-lead{margin-top:12px;color:var(--ink-soft);font-size:15px;line-height:1.8}
.section--dark .section-title{color:#fff}
.section--dark .section-lead{color:rgba(255,255,255,.74)}
.section--dark .eyebrow{color:var(--aqua-400)}
.grid{display:grid;gap:18px}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}
/* ---------- stat cards ---------- */
.stat-card{
 background:#fff;border:1px solid var(--line);border-radius:var(--radius);
 padding:22px 20px;box-shadow:var(--shadow-s);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
 position:relative;overflow:hidden;
}
.stat-card::before{
 content:"";position:absolute;left:0;top:0;width:100%;height:3px;
 background:linear-gradient(90deg,var(--blue-500),var(--aqua-400));
 opacity:.85;
}
.stat-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-m);border-color:var(--line-strong)}
.stat-label{font-size:13px;color:var(--ink-mute);letter-spacing:.05em}
.stat-value{display:block;margin-top:10px;font-size:26px;font-weight:700;color:var(--navy-700);letter-spacing:-.02em;line-height:1.25}
.stat-value small{font-size:13px;font-weight:600;color:var(--ink-mute);margin-left:4px}
.stat-note{margin-top:10px;font-size:13px;line-height:1.7;color:var(--ink-soft)}
/* ---------- tier cards ---------- */
.card{
 background:#fff;border:1px solid var(--line);border-radius:var(--radius);
 box-shadow:var(--shadow-s);overflow:hidden;
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-m);border-color:var(--line-strong)}
.tier-card{padding:22px 20px;display:flex;flex-direction:column;gap:12px}
.tier-card-top{display:flex;align-items:center;gap:12px}
.tier-icon{
 width:40px;height:40px;border-radius:11px;flex:0 0 auto;
 display:grid;place-items:center;
 background:rgba(26,111,158,.1);border:1px solid rgba(26,111,158,.18);
}
.tier-icon svg{width:20px;height:20px;stroke:var(--blue-600);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.tier-card h3{font-size:16.5px;font-weight:700;color:var(--navy-800);letter-spacing:.01em}
.tier-mult{
 margin-left:auto;font-size:13px;font-weight:700;color:var(--gold-500);
 background:rgba(217,147,44,.1);border:1px solid rgba(217,147,44,.26);
 padding:3px 10px;border-radius:999px;white-space:nowrap;
}
.tier-card p{font-size:14px;line-height:1.78;color:var(--ink-soft)}
.chip-row{display:flex;flex-wrap:wrap;gap:7px;margin-top:auto;padding-top:4px}
.chip{
 display:inline-flex;align-items:center;
 padding:3px 10px;border-radius:999px;font-size:12px;
 color:var(--blue-700);background:rgba(34,135,184,.09);
 border:1px solid rgba(34,135,184,.18);
}
/* ---------- item list ---------- */
.item-list{display:grid;gap:12px}
.item-row{
 display:grid;grid-template-columns:44px 1.1fr 1fr auto;
 align-items:center;gap:16px;
 padding:16px 20px;background:#fff;border:1px solid var(--line);
 border-radius:var(--radius);box-shadow:var(--shadow-s);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.item-row:hover{transform:translateY(-2px);box-shadow:var(--shadow-m);border-color:var(--line-strong)}
.item-icon{
 width:44px;height:44px;border-radius:11px;display:grid;place-items:center;
 background:rgba(63,182,201,.10);border:1px solid rgba(63,182,201,.22);
}
.item-icon svg{width:21px;height:21px;stroke:var(--blue-600);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.item-row h3{font-size:15.5px;font-weight:700;color:var(--navy-800)}
.item-row .item-desc{font-size:13.5px;color:var(--ink-soft);line-height:1.7}
.item-cd{
 font-size:13px;font-weight:700;color:var(--navy-700);
 background:var(--bg-alt);border:1px solid var(--line);
 padding:5px 12px;border-radius:8px;white-space:nowrap;
}
/* ---------- compare ---------- */
.compare-wrap{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.compare-col{padding:24px 22px;display:flex;flex-direction:column;gap:14px}
.compare-col h3{font-size:17px;font-weight:700;display:flex;align-items:center;gap:9px}
.compare-col h3 span{
 font-size:12px;font-weight:600;padding:2px 9px;border-radius:999px;
 background:var(--bg-alt);border:1px solid var(--line);color:var(--ink-soft);
}
.compare-col.low h3{color:var(--blue-700)}
.compare-col.high h3{color:var(--gold-500)}
.compare-col ul{display:grid;gap:10px}
.compare-col li{
 display:flex;gap:9px;font-size:14px;line-height:1.72;color:var(--ink-soft);
 padding-left:2px;
}
.compare-col li svg{width:16px;height:16px;flex:0 0 auto;margin-top:3px;fill:none;stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round}
.compare-col.low li svg{stroke:var(--blue-500)}
.compare-col.high li svg{stroke:var(--gold-500)}
.figure-band{
 margin-top:22px;display:grid;grid-template-columns:.9fr 1.1fr;gap:0;
 border-radius:var(--radius-l);overflow:hidden;border:1px solid var(--line);
 background:#fff;box-shadow:var(--shadow-s);
}
.figure-band img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/10}
.figure-body{padding:26px 26px;display:flex;flex-direction:column;justify-content:center;gap:10px}
.figure-body h3{font-size:17px;color:var(--navy-800);font-weight:700}
.figure-body p{font-size:14px;line-height:1.8;color:var(--ink-soft)}
/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:14px;position:relative}
.step{
 background:#fff;border:1px solid var(--line);border-radius:var(--radius);
 padding:20px 18px;box-shadow:var(--shadow-s);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.step:hover{transform:translateY(-3px);box-shadow:var(--shadow-m);border-color:var(--line-strong)}
.step-no{
 display:inline-grid;place-items:center;width:28px;height:28px;border-radius:8px;
 font-size:13px;font-weight:700;color:#fff;background:var(--blue-600);
 box-shadow:0 4px 10px rgba(26,111,158,.28);
}
.step h3{margin-top:13px;font-size:15px;font-weight:700;color:var(--navy-800)}
.step p{margin-top:8px;font-size:13.5px;line-height:1.72;color:var(--ink-soft)}
/* ---------- posts ---------- */
.post-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.post-card{display:flex;flex-direction:column;text-decoration:none}
.post-thumb{overflow:hidden;aspect-ratio:16/9;background:var(--bg-alt)}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.post-card:hover .post-thumb img{transform:scale(1.04)}
.post-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:8px;flex:1 1 auto}
.post-cat{
 align-self:flex-start;font-size:12px;color:var(--blue-700);
 background:rgba(34,135,184,.09);border:1px solid rgba(34,135,184,.18);
 padding:2px 10px;border-radius:999px;
}
.post-body h3{font-size:15.5px;line-height:1.55;font-weight:700;color:var(--navy-800)}
.post-body p{font-size:13.5px;line-height:1.72;color:var(--ink-soft);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-meta{margin-top:auto;padding-top:8px;font-size:12.5px;color:var(--ink-mute)}
.empty-state{
 padding:34px;text-align:center;color:var(--ink-mute);font-size:14px;
 background:#fff;border:1px dashed var(--line-strong);border-radius:var(--radius);
}
/* ---------- assurance ---------- */
.assure-card{padding:22px 20px}
.assure-card h3{display:flex;align-items:center;gap:9px;font-size:15.5px;font-weight:700;color:var(--navy-800)}
.assure-card h3 svg{width:18px;height:18px;stroke:var(--blue-600);fill:none;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}
.assure-card p{margin-top:10px;font-size:13.5px;line-height:1.76;color:var(--ink-soft)}
/* ---------- faq ---------- */
.faq-list{display:grid;gap:12px;max-width:920px}
.faq-item{
 background:#fff;border:1px solid var(--line);border-radius:var(--radius);
 box-shadow:var(--shadow-s);overflow:hidden;
 transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item[open]{border-color:rgba(34,135,184,.36);box-shadow:var(--shadow-m)}
.faq-item summary{
 list-style:none;cursor:pointer;
 display:flex;align-items:center;justify-content:space-between;gap:14px;
 padding:16px 20px;font-size:15px;font-weight:600;color:var(--navy-800);
 min-height:44px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{background:rgba(237,243,248,.6)}
.faq-item summary::after{
 content:"+";font-size:19px;font-weight:400;color:var(--blue-600);
 line-height:1;transition:transform .2s ease;
}
.faq-item[open] summary::after{content:"–";color:var(--gold-500)}
.faq-item .faq-a{padding:0 20px 18px;font-size:14px;line-height:1.8;color:var(--ink-soft)}
/* ---------- subscribe ---------- */
.subscribe{
 position:relative;overflow:hidden;
 background:var(--navy-800) url('/assets/images/backpic/back-6.webp') center/cover no-repeat;
 color:#fff;
}
.subscribe::after{
 content:"";position:absolute;inset:0;
 background:linear-gradient(140deg,rgba(8,24,42,.94) 0%,rgba(11,30,51,.92) 55%,rgba(21,89,127,.9) 100%);
}
.subscribe .container{position:relative;z-index:2;padding-top:58px;padding-bottom:58px}
.subscribe-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center}
.subscribe h2{font-size:clamp(21px,2.4vw,29px);line-height:1.36;letter-spacing:-.01em}
.subscribe p{margin-top:12px;font-size:14.5px;line-height:1.82;color:rgba(255,255,255,.78);max-width:520px}
.subscribe-form{
 background:rgba(255,255,255,.08);
 border:1px solid rgba(255,255,255,.18);
 border-radius:var(--radius-l);
 padding:24px 22px;
 box-shadow:var(--shadow-l);
}
.subscribe-form label{display:block;font-size:13px;letter-spacing:.04em;color:rgba(255,255,255,.72);margin-bottom:9px}
.field-row{display:flex;gap:10px;flex-wrap:wrap}
.field-row input{
 flex:1 1 200px;min-height:44px;padding:0 14px;
 border-radius:var(--radius-s);border:1px solid rgba(255,255,255,.26);
 background:rgba(8,24,42,.5);color:#fff;font-size:14px;
 transition:border-color .18s ease,background .18s ease;
}
.field-row input::placeholder{color:rgba(255,255,255,.42)}
.field-row input:focus{outline:none;border-color:var(--aqua-400);background:rgba(8,24,42,.72);box-shadow:0 0 0 3px rgba(63,182,201,.2)}
.form-tip{margin-top:12px;font-size:12.5px;line-height:1.7;color:rgba(255,255,255,.56)}
/* ---------- footer ---------- */
.site-footer{background:var(--navy-900);color:rgba(255,255,255,.72);padding:52px 0 0;border-top:1px solid rgba(255,255,255,.08)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:36px;padding-bottom:38px}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:16px;font-weight:700;margin-bottom:14px}
.footer-about{font-size:13.5px;line-height:1.8;color:rgba(255,255,255,.62);max-width:360px}
.footer-col h3{font-size:14px;color:#fff;font-weight:700;margin-bottom:14px;letter-spacing:.03em}
.footer-links{display:flex;flex-direction:column;gap:9px}
.footer-links a{font-size:13.5px;color:rgba(255,255,255,.66);transition:color .18s ease,transform .18s ease;width:fit-content}
.footer-links a:hover{color:var(--aqua-400);transform:translateX(2px)}
.footer-note{font-size:12.5px;line-height:1.7;color:rgba(255,255,255,.48)}
.footer-bottom{
 display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
 padding:18px 0;border-top:1px solid rgba(255,255,255,.1);
 font-size:12.5px;color:rgba(255,255,255,.5);
}
/* ---------- responsive ---------- */
@media (max-width:1024px){
 .hero-grid{grid-template-columns:1fr;gap:32px}
 .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
 .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
 .steps{grid-template-columns:repeat(3,minmax(0,1fr))}
 .post-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
 .figure-band{grid-template-columns:1fr}
 .figure-band img{aspect-ratio:16/9}
 .subscribe-grid{grid-template-columns:1fr;gap:28px}
}
@media (max-width:980px){
 .header-inner{gap:14px}
 .nav-toggle{display:inline-flex}
 .main-nav{
  position:absolute;top:100%;left:0;right:0;
  display:none;flex-direction:column;align-items:stretch;gap:4px;
  padding:12px 20px 18px;margin-left:0;
  background:var(--navy-800);
  border-bottom:1px solid rgba(255,255,255,.12);
  box-shadow:0 18px 32px rgba(5,16,28,.4);
 }
 .main-nav.is-open{display:flex}
 .main-nav a{width:100%;justify-content:flex-start;min-height:44px;padding:0 14px;font-size:14.5px}
 .main-nav a.active::after{left:14px;right:auto;width:20px;bottom:8px}
 .header-actions .btn-sm{display:none}
 .item-row{grid-template-columns:40px 1fr auto;gap:12px}
 .item-row .item-desc{grid-column:2 / -1;margin-top:-4px}
}
@media (max-width:768px){
 .container{padding:0 18px}
 .section{padding:48px 0}
 .page-hero .container{padding-top:28px;padding-bottom:44px}
 .grid-3,.grid-2,.post-grid{grid-template-columns:1fr}
 .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
 .compare-wrap{grid-template-columns:1fr}
 .tier-top{flex-direction:column;align-items:flex-start;gap:16px}
 .tier-meter{width:100%}
 .footer-grid{grid-template-columns:1fr;gap:26px}
 .hero-actions .btn{flex:1 1 auto}
}
@media (max-width:520px){
 .grid-4{grid-template-columns:1fr}
 .steps{grid-template-columns:1fr}
 .brand span:last-child{font-size:14.5px}
 .hero-badge{font-size:12px}
 .stat-value{font-size:23px}
 .item-row{grid-template-columns:40px 1fr;gap:10px;padding:14px 16px}
 .item-cd{grid-column:2;justify-self:start}
 .footer-bottom{flex-direction:column;align-items:flex-start;gap:6px}
 .field-row input{flex:1 1 100%}
 .field-row .btn{width:100%}
}

/* roulang page: category3 */
:root{
 --navy-900:#08182a;
 --navy-800:#0b1e33;
 --navy-700:#102a45;
 --navy-600:#16395c;
 --blue-700:#15597f;
 --blue-600:#1a6f9e;
 --blue-500:#2287b8;
 --aqua-400:#3fb6c9;
 --gold-500:#d9932c;
 --gold-400:#f0b455;
 --ink:#12212f;
 --ink-soft:#4a5b6b;
 --ink-mute:#7b8ca0;
 --line:#e3e9f0;
 --line-strong:#cfdbe7;
 --bg:#f5f8fb;
 --bg-alt:#edf3f8;
 --white:#ffffff;
 --radius-s:8px;
 --radius:12px;
 --radius-l:18px;
 --shadow-s:0 1px 2px rgba(16,42,69,.06),0 4px 14px rgba(16,42,69,.05);
 --shadow-m:0 8px 26px rgba(16,42,69,.10);
 --shadow-l:0 18px 44px rgba(16,42,69,.16);
 --container:1180px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
 margin:0;
 font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
 font-size:15px;
 line-height:1.75;
 color:var(--ink);
 background:var(--bg);
 -webkit-font-smoothing:antialiased;
 text-rendering:optimizeLegibility;
}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.32;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible{outline:2px solid var(--aqua-400);outline-offset:2px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
/* ---------- header ---------- */
.site-header{
 position:sticky;top:0;z-index:60;
 background:rgba(11,30,51,.97);
 border-bottom:1px solid rgba(255,255,255,.09);
 transition:box-shadow .22s ease;
}
.site-header.is-stuck{box-shadow:0 10px 26px rgba(5,16,28,.34)}
.header-inner{display:flex;align-items:center;gap:26px;min-height:64px}
.brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:16px;font-weight:700;letter-spacing:.02em;white-space:nowrap;flex:0 0 auto}
.brand-mark{
 width:32px;height:32px;border-radius:9px;flex:0 0 auto;
 background:linear-gradient(135deg,var(--blue-500),var(--aqua-400));
 display:grid;place-items:center;
 box-shadow:0 4px 12px rgba(34,135,184,.36);
}
.brand-mark svg{width:18px;height:18px;stroke:#fff;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.main-nav{display:flex;align-items:center;gap:2px;margin-left:auto}
.main-nav a{
 position:relative;display:inline-flex;align-items:center;
 min-height:40px;padding:0 13px;border-radius:8px;
 font-size:14px;color:rgba(255,255,255,.74);
 transition:color .18s ease,background .18s ease;
}
.main-nav a:hover{color:#fff;background:rgba(255,255,255,.08)}
.main-nav a.active{color:#fff;background:rgba(255,255,255,.12)}
.main-nav a.active::after{
 content:"";position:absolute;left:13px;right:13px;bottom:6px;height:2px;
 border-radius:2px;background:var(--gold-400);
}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.nav-toggle{
 display:none;width:42px;height:42px;border-radius:8px;
 border:1px solid rgba(255,255,255,.22);
 align-items:center;justify-content:center;
 transition:background .18s ease;
}
.nav-toggle:hover{background:rgba(255,255,255,.1)}
.nav-toggle svg{width:20px;height:20px;stroke:#fff;fill:none;stroke-width:1.9;stroke-linecap:round}
/* ---------- buttons ---------- */
.btn{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 min-height:44px;padding:0 22px;border-radius:var(--radius-s);
 font-size:15px;font-weight:600;letter-spacing:.01em;
 border:1px solid transparent;
 transition:transform .18s ease,background .18s ease,box-shadow .18s ease,color .18s ease,border-color .18s ease;
}
.btn svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.btn-primary{background:var(--blue-600);color:#fff;box-shadow:0 7px 18px rgba(26,111,158,.30)}
.btn-primary:hover{background:var(--blue-700);transform:translateY(-2px);box-shadow:0 10px 22px rgba(26,111,158,.36)}
.btn-ghost{background:rgba(255,255,255,.06);color:#fff;border-color:rgba(255,255,255,.42)}
.btn-ghost:hover{background:rgba(255,255,255,.16);transform:translateY(-2px)}
.btn-gold{background:var(--gold-500);color:#231402;box-shadow:0 7px 18px rgba(217,147,44,.28)}
.btn-gold:hover{background:var(--gold-400);transform:translateY(-2px)}
.btn-outline{background:#fff;color:var(--navy-700);border-color:var(--line-strong)}
.btn-outline:hover{border-color:var(--blue-500);color:var(--blue-700);transform:translateY(-2px)}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px}
/* ---------- category hero ---------- */
.cat-hero{
 position:relative;overflow:hidden;color:#fff;
 background:var(--navy-900) url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
}
.cat-hero::after{
 content:"";position:absolute;inset:0;
 background:linear-gradient(165deg,rgba(6,18,32,.9) 0%,rgba(8,24,42,.92) 52%,rgba(10,34,56,.95) 100%);
}
.cat-hero .container{position:relative;z-index:2;padding-top:34px;padding-bottom:54px}
.crumb{display:flex;align-items:center;gap:9px;font-size:13px;color:rgba(255,255,255,.6);margin-bottom:22px;flex-wrap:wrap}
.crumb a{color:rgba(255,255,255,.78);transition:color .18s ease}
.crumb a:hover{color:#fff}
.crumb span{color:rgba(255,255,255,.4)}
.cat-hero h1{
 font-size:clamp(28px,3.3vw,42px);
 letter-spacing:-.015em;
 max-width:860px;
}
.hero-lead{
 max-width:800px;margin-top:16px;
 font-size:15.5px;line-height:1.85;color:rgba(255,255,255,.82);
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.tag-pill{
 display:inline-flex;align-items:center;
 padding:5px 13px;border-radius:999px;
 font-size:13px;color:rgba(255,255,255,.78);
 border:1px solid rgba(255,255,255,.2);
 background:rgba(255,255,255,.05);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
/* ---------- sections ---------- */
.section{padding:64px 0}
.section--alt{background:var(--bg-alt)}
.section--tight{padding:52px 0}
.section-head{margin-bottom:34px;max-width:820px}
.section-head h2{
 font-size:clamp(21px,2.2vw,27px);
 display:flex;align-items:center;gap:12px;
}
.section-head h2::before{
 content:"";width:6px;height:22px;border-radius:3px;flex:0 0 auto;
 background:linear-gradient(180deg,var(--blue-500),var(--aqua-400));
}
.section-sub{margin-top:12px;font-size:14.5px;color:var(--ink-soft);line-height:1.8}
/* ---------- metric panel ---------- */
.metric-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.metric-card{
 background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
 padding:24px 22px;box-shadow:var(--shadow-s);
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.metric-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-m);border-color:var(--line-strong)}
.metric-value{font-size:30px;font-weight:700;line-height:1.1;color:var(--blue-700);letter-spacing:-.02em}
.metric-value em{font-style:normal;font-size:16px;margin-left:2px;color:var(--ink-soft)}
.metric-label{font-size:12.5px;letter-spacing:.06em;color:var(--ink-mute);margin-top:8px}
.metric-desc{font-size:13.5px;color:var(--ink-soft);margin-top:12px;line-height:1.7}
/* ---------- cards ---------- */
.card-grid{display:grid;gap:20px}
.card-grid.cols-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.card-grid.cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.card{
 background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
 box-shadow:var(--shadow-s);padding:26px 24px;
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-m);border-color:var(--line-strong)}
.card-icon{
 width:44px;height:44px;border-radius:11px;
 display:grid;place-items:center;margin-bottom:18px;
 background:rgba(34,135,184,.10);
}
.card-icon svg{width:21px;height:21px;stroke:var(--blue-600);fill:none;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}
.card h3{font-size:16.5px;margin-bottom:10px}
.card p{font-size:14px;color:var(--ink-soft);line-height:1.78}
.card-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.badge{
 display:inline-flex;align-items:center;
 padding:3px 10px;border-radius:999px;font-size:12px;
 background:var(--bg-alt);color:var(--blue-700);
 border:1px solid rgba(34,135,184,.18);
}
/* ---------- compare table ---------- */
.compare-wrap{
 overflow-x:auto;background:var(--white);
 border:1px solid var(--line);border-radius:var(--radius);
 box-shadow:var(--shadow-s);
}
table.compare{width:100%;border-collapse:collapse;min-width:760px}
.compare th,.compare td{padding:15px 20px;text-align:left;font-size:14px;border-bottom:1px solid var(--line);vertical-align:top}
.compare thead th{
 background:var(--bg-alt);font-size:13.5px;font-weight:700;
 color:var(--navy-700);letter-spacing:.02em;
}
.compare tbody tr:last-child td{border-bottom:0}
.compare tbody tr{transition:background .18s ease}
.compare tbody tr:hover{background:rgba(34,135,184,.045)}
.compare td:first-child{font-weight:600;color:var(--navy-700);white-space:nowrap}
.compare-note{margin-top:18px;font-size:13.5px;color:var(--ink-soft);line-height:1.8}
/* ---------- split ---------- */
.split{display:grid;grid-template-columns:1.02fr .98fr;gap:44px;align-items:center}
.figure{
 border-radius:var(--radius-l);overflow:hidden;
 border:1px solid var(--line);box-shadow:var(--shadow-m);
}
.figure img{width:100%;aspect-ratio:16/10;object-fit:cover}
.figure figcaption{
 font-size:12.5px;color:var(--ink-mute);padding:12px 18px;background:var(--white);
 border-top:1px solid var(--line);
}
.plain-list{display:grid;gap:16px;margin-top:22px}
.plain-list li{
 display:flex;gap:12px;align-items:flex-start;
 font-size:14px;color:var(--ink-soft);line-height:1.78;
 padding-bottom:16px;border-bottom:1px dashed var(--line);
}
.plain-list li:last-child{border-bottom:0;padding-bottom:0}
.plain-list svg{
 width:18px;height:18px;flex:0 0 auto;margin-top:3px;
 stroke:var(--blue-600);fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;
}
.plain-list strong{color:var(--navy-700);font-weight:700}
/* ---------- timeline ---------- */
.timeline{position:relative;padding-left:34px;margin-top:6px}
.timeline::before{
 content:"";position:absolute;left:11px;top:8px;bottom:8px;width:2px;
 background:linear-gradient(180deg,var(--blue-500),rgba(63,182,201,.22));
}
.timeline-item{position:relative;padding-bottom:28px}
.timeline-item:last-child{padding-bottom:0}
.timeline-item::before{
 content:"";position:absolute;left:-28px;top:7px;
 width:12px;height:12px;border-radius:50%;
 background:var(--white);border:3px solid var(--blue-500);
 box-shadow:0 0 0 4px rgba(34,135,184,.12);
}
.timeline-stage{display:block;font-size:12.5px;font-weight:700;letter-spacing:.08em;color:var(--blue-600);margin-bottom:5px}
.timeline-item h3{font-size:16px;margin-bottom:7px}
.timeline-item p{font-size:14px;color:var(--ink-soft);line-height:1.78}
/* ---------- news list ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.news-card{
 display:flex;flex-direction:column;
 background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
 box-shadow:var(--shadow-s);padding:24px;
 transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-m);border-color:var(--line-strong)}
.news-card h3{font-size:16px;line-height:1.5;margin-bottom:10px}
.news-card p{
 font-size:13.5px;color:var(--ink-soft);line-height:1.75;
 display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-top:auto;padding-top:16px;font-size:12.5px;color:var(--ink-mute)}
.empty-note{
 padding:32px;background:var(--white);border:1px dashed var(--line-strong);
 border-radius:var(--radius);font-size:14px;color:var(--ink-mute);text-align:center;
}
/* ---------- faq ---------- */
.faq-list{display:grid;gap:12px;max-width:920px}
.faq-item{
 background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
 box-shadow:var(--shadow-s);overflow:hidden;
 transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item[open]{border-color:rgba(34,135,184,.35);box-shadow:var(--shadow-m)}
.faq-item summary{
 list-style:none;cursor:pointer;
 padding:18px 22px;font-size:15px;font-weight:600;
 display:flex;align-items:center;justify-content:space-between;gap:16px;
 transition:color .18s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--blue-700)}
.faq-item summary::after{
 content:"+";font-size:20px;line-height:1;color:var(--blue-600);flex:0 0 auto;
 transition:transform .2s ease;
}
.faq-item[open] summary::after{content:"−"}
.faq-body{padding:0 22px 20px;font-size:14px;color:var(--ink-soft);line-height:1.8}
/* ---------- cta ---------- */
.cta-band{
 position:relative;overflow:hidden;
 background:var(--navy-800);color:#fff;
 border-radius:var(--radius-l);padding:46px;
 display:grid;grid-template-columns:1.08fr .92fr;gap:38px;align-items:center;
 box-shadow:var(--shadow-l);
}
.cta-band::before{
 content:"";position:absolute;right:-90px;top:-90px;width:280px;height:280px;
 border-radius:50%;background:rgba(63,182,201,.12);
}
.cta-band::after{
 content:"";position:absolute;left:-60px;bottom:-110px;width:220px;height:220px;
 border-radius:50%;background:rgba(34,135,184,.14);
}
.cta-band > *{position:relative;z-index:2}
.cta-band h2{font-size:clamp(20px,2.2vw,26px);margin-bottom:14px}
.cta-band p{font-size:14.5px;color:rgba(255,255,255,.76);line-height:1.8}
.subscribe-form{display:flex;gap:10px;flex-wrap:wrap}
.subscribe-form input{
 flex:1 1 210px;min-height:46px;padding:0 16px;
 border-radius:var(--radius-s);font-size:14.5px;
 border:1px solid rgba(255,255,255,.24);
 background:rgba(255,255,255,.08);color:#fff;
 transition:background .18s ease,border-color .18s ease;
}
.subscribe-form input::placeholder{color:rgba(255,255,255,.52)}
.subscribe-form input:focus{background:rgba(255,255,255,.14);border-color:rgba(63,182,201,.7)}
.form-hint{font-size:13px;color:rgba(255,255,255,.62);margin-top:12px;min-height:20px}
.form-hint.is-ok{color:var(--gold-400)}
/* ---------- footer ---------- */
.site-footer{background:var(--navy-900);color:rgba(255,255,255,.72);padding:56px 0 0}
.footer-grid{
 display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:40px;
 padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.1);
}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:16px;font-weight:700;margin-bottom:14px}
.footer-about{font-size:13.5px;line-height:1.85;color:rgba(255,255,255,.62);max-width:420px}
.footer-col h3{font-size:14px;color:#fff;margin-bottom:14px;letter-spacing:.03em}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:13.5px;color:rgba(255,255,255,.66);transition:color .18s ease,transform .18s ease}
.footer-links a:hover{color:#fff;transform:translateX(2px)}
.footer-note{font-size:12.5px;color:rgba(255,255,255,.5);line-height:1.75}
.footer-bottom{
 display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
 padding:22px 0;font-size:12.5px;color:rgba(255,255,255,.5);
}
/* ---------- responsive ---------- */
@media (max-width:1024px){
 .main-nav{
  display:none;position:absolute;top:64px;left:0;right:0;
  flex-direction:column;align-items:stretch;gap:4px;
  padding:10px 18px 18px;margin-left:0;
  background:var(--navy-800);
  border-bottom:1px solid rgba(255,255,255,.1);
  box-shadow:0 18px 30px rgba(5,16,28,.42);
 }
 .main-nav.is-open{display:flex}
 .main-nav a{min-height:44px;padding:0 12px;font-size:14.5px}
 .main-nav a.active::after{display:none}
 .nav-toggle{display:inline-flex}
 .header-inner{gap:12px}
 .metric-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
 .card-grid.cols-4{grid-template-columns:repeat(2,minmax(0,1fr))}
 .card-grid.cols-3{grid-template-columns:repeat(2,minmax(0,1fr))}
 .news-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
 .split{grid-template-columns:1fr;gap:30px}
 .cta-band{grid-template-columns:1fr;padding:34px}
 .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:768px){
 .container{padding:0 18px}
 .section{padding:48px 0}
 .section--tight{padding:40px 0}
 .cat-hero .container{padding-top:26px;padding-bottom:42px}
 .hero-lead{font-size:14.5px}
 .card-grid.cols-4,.card-grid.cols-3,.news-grid{grid-template-columns:1fr}
 .section-head{margin-bottom:26px}
 .footer-grid{grid-template-columns:1fr;gap:28px}
 .footer-bottom{flex-direction:column;gap:6px;padding:20px 0}
 .card{padding:22px 20px}
}
@media (max-width:520px){
 .metric-grid{grid-template-columns:1fr}
 .metric-value{font-size:26px}
 .hero-actions .btn{flex:1 1 100%}
 .cta-band{padding:26px 22px;border-radius:var(--radius)}
 .subscribe-form input{flex:1 1 100%}
 .subscribe-form .btn{width:100%}
 .compare th,.compare td{padding:12px 14px;font-size:13.5px}
 .faq-item summary{padding:16px 18px;font-size:14.5px}
 .faq-body{padding:0 18px 18px}
 .brand span:last-child{max-width:170px;overflow:hidden;text-overflow:ellipsis}
}