/* roulang page: index */
:root{
  --ink:#0a1424;
  --ink-2:#122238;
  --ink-3:#1c3350;
  --gold:#c08a3e;
  --gold-2:#e2bf85;
  --paper:#f7f5f1;
  --white:#ffffff;
  --text:#1b2432;
  --muted:#69748a;
  --line:#e4e0d8;
  --radius-s:10px;
  --radius:16px;
  --radius-l:24px;
  --shadow-s:0 2px 10px rgba(16,26,44,.06);
  --shadow:0 14px 34px rgba(16,26,44,.09);
  --shadow-l:0 28px 64px rgba(9,18,32,.18);
  --maxw:1180px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::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;
  background:var(--paper);
  color:var(--text);
  font-size:16px;
  line-height:1.78;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--gold)}
h1,h2,h3,h4,h5{font-weight:800;line-height:1.32;margin:0;letter-spacing:-.01em;color:var(--ink)}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;border:0;background:none;cursor:pointer;color:inherit}
.yf-container{max-width:var(--maxw);margin:0 auto;padding:0 24px;width:100%}
.yf-skip{position:absolute;left:-9999px}

/* ---------- Header ---------- */
.yf-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.94);
  backdrop-filter:saturate(160%) blur(12px);
  border-bottom:1px solid var(--line);
}
.yf-header-inner{
  display:flex;align-items:center;gap:20px;
  max-width:var(--maxw);margin:0 auto;padding:0 24px;height:78px;
}
.yf-logo{display:flex;align-items:center;gap:12px;flex:0 0 auto;min-width:0}
.yf-logo-mark{
  width:42px;height:42px;border-radius:13px;flex:0 0 auto;
  background:linear-gradient(140deg,var(--ink) 0%,var(--ink-3) 100%);
  color:var(--gold-2);display:grid;place-items:center;
  font-weight:800;font-size:17px;letter-spacing:.04em;
  box-shadow:var(--shadow-s);
}
.yf-logo-text{display:flex;flex-direction:column;line-height:1.2;min-width:0}
.yf-logo-name{font-size:16px;font-weight:800;color:var(--ink);white-space:nowrap}
.yf-logo-sub{font-size:10.5px;color:var(--muted);letter-spacing:.16em;white-space:nowrap}
.yf-nav{
  display:flex;align-items:center;gap:6px;flex:1 1 auto;min-width:0;
  overflow-x:auto;padding:6px 2px;scrollbar-width:none;
}
.yf-nav::-webkit-scrollbar{display:none}
.yf-nav a{
  display:inline-block;white-space:nowrap;
  padding:9px 17px;border-radius:999px;
  font-size:14.5px;font-weight:600;color:#3d4859;
  border:1px solid transparent;
  transition:all .22s var(--ease);
}
.yf-nav a:hover{background:#f1eee7;color:var(--ink)}
.yf-nav a.is-active{background:var(--ink);color:#fff;border-color:var(--ink);box-shadow:0 6px 16px rgba(10,20,36,.18)}
.yf-header-cta{flex:0 0 auto;display:flex;align-items:center;gap:10px}
.yf-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:999px;font-weight:700;font-size:14.5px;
  border:1px solid transparent;white-space:nowrap;
  transition:all .22s var(--ease);line-height:1.2;
}
.yf-btn i{font-size:.95em}
.yf-btn-primary{background:linear-gradient(135deg,var(--gold) 0%,#a9713a 100%);color:#fff;box-shadow:0 8px 20px rgba(192,138,62,.3)}
.yf-btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:0 14px 28px rgba(192,138,62,.38)}
.yf-btn-ghost{background:#fff;color:var(--ink);border-color:var(--line)}
.yf-btn-ghost:hover{color:var(--gold);border-color:var(--gold);transform:translateY(-2px)}
.yf-btn-dark{background:var(--ink);color:#fff;box-shadow:0 8px 20px rgba(10,20,36,.24)}
.yf-btn-dark:hover{color:#fff;transform:translateY(-2px);box-shadow:0 14px 28px rgba(10,20,36,.3)}
.yf-btn-light{background:rgba(255,255,255,.1);color:#fff;border-color:rgba(255,255,255,.28)}
.yf-btn-light:hover{background:rgba(255,255,255,.18);color:#fff;transform:translateY(-2px)}
.yf-btn:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid rgba(192,138,62,.5);outline-offset:2px}
.yf-btn-block{width:100%}

/* ---------- Hero ---------- */
.yf-hero{
  position:relative;overflow:hidden;color:#e8eef7;
  padding:76px 0 70px;
  background:
    radial-gradient(1100px 560px at 82% -12%,rgba(192,138,62,.24),transparent 62%),
    radial-gradient(800px 500px at 6% 108%,rgba(28,51,80,.85),transparent 70%),
    linear-gradient(158deg,#070e1b 0%,#0d1a2d 54%,#122740 100%);
}
.yf-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:68px 68px;
  -webkit-mask-image:linear-gradient(180deg,#000 0%,transparent 78%);
  mask-image:linear-gradient(180deg,#000 0%,transparent 78%);
}
.yf-hero-inner{position:relative;z-index:2}
.yf-hero-grid{
  display:grid;grid-template-columns:minmax(0,1.06fr) minmax(0,.94fr);
  gap:52px;align-items:start;
}
.yf-hero-tag{
  display:inline-flex;align-items:center;gap:10px;
  padding:7px 16px;border-radius:999px;
  background:rgba(255,255,255,.07);
  border:1px solid rgba(226,191,133,.34);
  color:var(--gold-2);font-size:12.5px;font-weight:700;letter-spacing:.1em;
  margin-bottom:24px;
}
.yf-hero-tag span.dot{width:6px;height:6px;border-radius:50%;background:var(--gold-2);box-shadow:0 0 0 4px rgba(226,191,133,.16)}
.yf-hero h1{
  color:#fff;font-size:clamp(27px,3.9vw,43px);line-height:1.26;
  letter-spacing:-.015em;margin-bottom:22px;font-weight:800;
}
.yf-hero h1 em{font-style:normal;color:var(--gold-2)}
.yf-hero-lead{color:#b7c4d6;font-size:16px;line-height:1.92;margin-bottom:30px;max-width:640px}
.yf-hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:34px}
.yf-hero-facts{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;
  border-top:1px solid rgba(255,255,255,.12);padding-top:24px;
}
.yf-hero-fact{min-width:0}
.yf-hero-fact strong{display:block;color:#fff;font-size:15px;font-weight:800;margin-bottom:4px}
.yf-hero-fact span{display:block;color:#8899b1;font-size:13px;line-height:1.6}

/* hero side panel */
.yf-panel{
  background:linear-gradient(158deg,rgba(255,255,255,.09) 0%,rgba(255,255,255,.03) 100%);
  border:1px solid rgba(255,255,255,.16);
  border-radius:var(--radius-l);
  padding:26px 24px 22px;
  box-shadow:var(--shadow-l);
  backdrop-filter:blur(6px);
}
.yf-panel-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:6px}
.yf-panel-head h2{color:#fff;font-size:16.5px;font-weight:800;letter-spacing:.01em}
.yf-panel-head .yf-panel-badge{
  font-size:11px;font-weight:700;letter-spacing:.1em;color:var(--gold-2);
  border:1px solid rgba(226,191,133,.36);padding:4px 10px;border-radius:999px;white-space:nowrap;
}
.yf-panel-sub{color:#8fa1b9;font-size:13px;margin-bottom:18px}
.yf-rank{border-top:1px solid rgba(255,255,255,.12)}
.yf-rank li{
  display:flex;align-items:center;gap:14px;
  padding:13px 2px;border-bottom:1px solid rgba(255,255,255,.09);
  min-width:0;
}
.yf-rank .num{
  width:24px;height:24px;flex:0 0 auto;border-radius:8px;
  background:rgba(255,255,255,.09);color:#cfdae8;
  display:grid;place-items:center;font-size:12px;font-weight:800;
}
.yf-rank li:nth-child(1) .num,
.yf-rank li:nth-child(2) .num{background:linear-gradient(135deg,var(--gold),#a9713a);color:#fff}
.yf-rank .txt{flex:1 1 auto;min-width:0;color:#e4ebf4;font-size:14.2px;font-weight:600}
.yf-rank .tag{
  flex:0 0 auto;font-size:11.5px;font-weight:700;color:#b9c8db;
  background:rgba(255,255,255,.08);border-radius:999px;padding:3px 10px;white-space:nowrap;
}
.yf-panel-note{margin-top:16px;color:#7e8ea6;font-size:12.4px;line-height:1.7}

/* ---------- Sections ---------- */
.yf-section{padding:78px 0}
.yf-section.is-white{background:var(--white)}
.yf-section.is-ink{background:linear-gradient(160deg,#08101e 0%,#0e1c2f 100%);color:#aebccf}
.yf-eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-size:12px;font-weight:800;letter-spacing:.18em;color:var(--gold);
  text-transform:uppercase;margin-bottom:14px;
}
.yf-eyebrow::before{content:"";width:26px;height:2px;background:var(--gold);border-radius:2px}
.yf-section-head{max-width:740px;margin-bottom:46px}
.yf-section-head h2{font-size:clamp(23px,2.6vw,33px);margin-bottom:15px}
.yf-section-head p{color:#55617a;font-size:15.5px;line-height:1.9}
.yf-section.is-ink .yf-section-head h2{color:#fff}
.yf-section.is-ink .yf-section-head p{color:#9aabc1}

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

/* cards */
.yf-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 24px;box-shadow:var(--shadow-s);min-width:0;
  transition:transform .26s var(--ease),box-shadow .26s var(--ease),border-color .26s var(--ease);
}
.yf-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#d9cfbd}
.yf-card-icon{
  width:44px;height:44px;border-radius:13px;display:grid;place-items:center;
  background:linear-gradient(140deg,#fbf3e5,#f1e4cd);color:#a9713a;
  font-size:18px;margin-bottom:16px;
}
.yf-card h3{font-size:17px;margin-bottom:10px}
.yf-card p{color:#59657c;font-size:14.5px;line-height:1.82}
.yf-card .yf-card-sub{margin-top:14px;font-size:12.6px;color:var(--gold);font-weight:700;letter-spacing:.04em}

/* feature groups */
.yf-group{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:28px 26px;box-shadow:var(--shadow-s);min-width:0;
  transition:transform .26s var(--ease),box-shadow .26s var(--ease);
}
.yf-group:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.yf-group-top{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.yf-group-top .dotbox{
  width:34px;height:34px;border-radius:10px;background:var(--ink);color:var(--gold-2);
  display:grid;place-items:center;font-size:14px;flex:0 0 auto;
}
.yf-group-top h3{font-size:16.5px}
.yf-list li{
  position:relative;padding-left:20px;color:#59657c;font-size:14.4px;
  line-height:1.8;margin-bottom:9px;
}
.yf-list li::before{
  content:"";position:absolute;left:0;top:.72em;
  width:7px;height:7px;border-radius:2px;background:var(--gold);opacity:.85;
}
.yf-list li:last-child{margin-bottom:0}

/* scenario tiles */
.yf-tile{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:24px 22px;min-width:0;box-shadow:var(--shadow-s);
  transition:transform .26s var(--ease),box-shadow .26s var(--ease),border-color .26s var(--ease);
}
.yf-tile:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#d9cfbd}
.yf-tile .k{font-size:12px;font-weight:800;letter-spacing:.14em;color:var(--gold);margin-bottom:10px;display:block}
.yf-tile h3{font-size:15.8px;margin-bottom:9px}
.yf-tile p{color:#59657c;font-size:14px;line-height:1.8}

/* demo stage */
.yf-stage{display:grid;grid-template-columns:minmax(0,.92fr) minmax(0,1.08fr);gap:48px;align-items:center}
.yf-stage-copy h2{font-size:clamp(23px,2.6vw,32px);margin-bottom:16px}
.yf-stage-copy p{color:#55617a;font-size:15.5px;line-height:1.9;margin-bottom:22px}
.yf-stage-points li{
  position:relative;padding-left:26px;font-size:14.6px;color:#43506a;margin-bottom:12px;line-height:1.8;
}
.yf-stage-points li::before{
  content:"\f00c";font-family:"Font Awesome 6 Free";font-weight:900;
  position:absolute;left:0;top:1px;color:var(--gold);font-size:12.5px;
}
.yf-window{
  background:linear-gradient(165deg,#0b1526 0%,#13253c 100%);
  border-radius:var(--radius-l);padding:18px;box-shadow:var(--shadow-l);
  border:1px solid rgba(255,255,255,.1);
}
.yf-window-bar{display:flex;align-items:center;gap:7px;margin-bottom:16px}
.yf-window-bar i{width:9px;height:9px;border-radius:50%;background:rgba(255,255,255,.22);display:block}
.yf-window-bar .title{
  margin-left:8px;font-size:12px;color:#8fa1b9;letter-spacing:.08em;
}
.yf-window-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.yf-mini{
  background:rgba(255,255,255,.055);border:1px solid rgba(255,255,255,.1);
  border-radius:14px;padding:14px 13px;min-width:0;
}
.yf-mini h4{color:#e6edf6;font-size:13.2px;font-weight:700;margin-bottom:6px}
.yf-mini p{color:#8fa1b9;font-size:12px;line-height:1.6}
.yf-mini-bars{display:flex;align-items:flex-end;gap:4px;height:34px;margin-top:10px}
.yf-mini-bars span{flex:1 1 auto;border-radius:3px 3px 0 0;background:linear-gradient(180deg,var(--gold-2),rgba(192,138,62,.35))}
.yf-mini-bars span:nth-child(1){height:40%}
.yf-mini-bars span:nth-child(2){height:64%}
.yf-mini-bars span:nth-child(3){height:48%}
.yf-mini-bars span:nth-child(4){height:78%}
.yf-mini-bars span:nth-child(5){height:58%}
.yf-window-foot{
  margin-top:14px;padding-top:13px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;gap:8px;
}
.yf-chip{
  display:inline-block;padding:5px 12px;border-radius:999px;
  background:rgba(226,191,133,.14);border:1px solid rgba(226,191,133,.3);
  color:var(--gold-2);font-size:11.8px;font-weight:700;letter-spacing:.04em;
}

/* steps */
.yf-steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;counter-reset:step}
.yf-step{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 22px;box-shadow:var(--shadow-s);min-width:0;
  transition:transform .26s var(--ease),box-shadow .26s var(--ease);
}
.yf-step:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.yf-step .no{
  display:inline-grid;place-items:center;width:34px;height:34px;border-radius:11px;
  background:var(--ink);color:var(--gold-2);font-weight:800;font-size:14px;margin-bottom:14px;
}
.yf-step h3{font-size:15.8px;margin-bottom:8px}
.yf-step p{color:#59657c;font-size:14px;line-height:1.8}

/* risk block */
.yf-split{display:grid;grid-template-columns:minmax(0,1.02fr) minmax(0,.98fr);gap:46px;align-items:start}
.yf-split h2{font-size:clamp(23px,2.6vw,32px);margin-bottom:16px}
.yf-split p{color:#55617a;font-size:15.4px;line-height:1.92;margin-bottom:16px}
.yf-checks{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:8px 24px;box-shadow:var(--shadow-s)}
.yf-checks li{
  display:flex;gap:14px;padding:16px 0;border-bottom:1px solid #f0ece4;min-width:0;
}
.yf-checks li:last-child{border-bottom:0}
.yf-checks .ic{
  width:32px;height:32px;flex:0 0 auto;border-radius:10px;background:#f7f1e6;color:#a9713a;
  display:grid;place-items:center;font-size:13px;
}
.yf-checks .body{min-width:0}
.yf-checks strong{display:block;font-size:14.6px;color:var(--ink);margin-bottom:3px}
.yf-checks span{display:block;color:#66728a;font-size:13.8px;line-height:1.72}

/* compare */
.yf-compare{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
.yf-plan{
  border:1px solid var(--line);border-radius:var(--radius);padding:28px 26px;
  background:#fff;box-shadow:var(--shadow-s);min-width:0;
  transition:transform .26s var(--ease),box-shadow .26s var(--ease),border-color .26s var(--ease);
}
.yf-plan:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.yf-plan.is-dark{background:linear-gradient(160deg,#0b1526,#142a44);border-color:#1d3450;color:#b3c1d4}
.yf-plan.is-dark h3{color:#fff}
.yf-plan-tag{
  display:inline-block;font-size:11.6px;font-weight:800;letter-spacing:.12em;
  color:var(--gold);background:#fbf3e5;border-radius:999px;padding:4px 12px;margin-bottom:14px;
}
.yf-plan.is-dark .yf-plan-tag{background:rgba(226,191,133,.16);color:var(--gold-2)}
.yf-plan h3{font-size:18px;margin-bottom:10px}
.yf-plan>p{font-size:14.2px;line-height:1.8;color:#5d6981;margin-bottom:18px}
.yf-plan.is-dark>p{color:#93a5bd}
.yf-plan-rows{border-top:1px solid #efeae1;padding-top:6px}
.yf-plan.is-dark .yf-plan-rows{border-top-color:rgba(255,255,255,.14)}
.yf-plan-row{display:flex;justify-content:space-between;gap:14px;padding:11px 0;border-bottom:1px dashed #efeae1;font-size:13.8px}
.yf-plan.is-dark .yf-plan-row{border-bottom-color:rgba(255,255,255,.12)}
.yf-plan-row span:first-child{color:#78859b;flex:0 0 auto}
.yf-plan-row span:last-child{color:var(--ink);font-weight:700;text-align:right;min-width:0}
.yf-plan.is-dark .yf-plan-row span:first-child{color:#8ea0b8}
.yf-plan.is-dark .yf-plan-row span:last-child{color:#e8eef7}

/* channel entry */
.yf-channel{
  display:grid;grid-template-columns:minmax(0,1fr) auto;gap:28px;align-items:center;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-l);
  padding:34px 34px;box-shadow:var(--shadow-s);
  transition:transform .26s var(--ease),box-shadow .26s var(--ease),border-color .26s var(--ease);
}
.yf-channel:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#d9cfbd}
.yf-channel h3{font-size:20px;margin-bottom:10px}
.yf-channel p{color:#59657c;font-size:14.8px;line-height:1.85;max-width:720px}
.yf-channel .yf-channel-side{flex:0 0 auto}

/* CMS list */
.yf-news{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(0,1fr);gap:34px;align-items:start}
.yf-post{
  display:block;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:22px 24px;margin-bottom:14px;box-shadow:var(--shadow-s);min-width:0;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.yf-post:hover{transform:translateX(4px);box-shadow:var(--shadow);border-color:#d9cfbd}
.yf-post h3{font-size:16.4px;margin-bottom:8px;line-height:1.5}
.yf-post p{
  color:#616d84;font-size:13.9px;line-height:1.78;margin-bottom:12px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.yf-post-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:12.4px;color:#8b95a8}
.yf-post-meta .pill{
  background:#f7f1e6;color:#a9713a;border-radius:999px;padding:3px 11px;font-weight:700;font-size:11.8px;
}
.yf-side{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:24px 22px;box-shadow:var(--shadow-s);
}
.yf-side h3{font-size:16px;margin-bottom:6px}
.yf-side .yf-side-sub{font-size:12.8px;color:var(--muted);margin-bottom:16px}
.yf-side-item{
  display:block;padding:13px 0;border-top:1px solid #f0ece4;min-width:0;
  transition:color .2s var(--ease);
}
.yf-side-item strong{
  display:block;font-size:14.2px;color:var(--ink);font-weight:700;line-height:1.6;
  transition:color .2s var(--ease);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.yf-side-item:hover strong{color:var(--gold)}
.yf-side-item em{display:block;font-style:normal;font-size:12.2px;color:#98a2b3;margin-top:4px}
.yf-empty{
  background:#fff;border:1px dashed var(--line);border-radius:var(--radius);
  padding:30px 24px;color:#7c879a;font-size:14.4px;text-align:center;
}
.yf-more-row{margin-top:20px}

/* tags */
.yf-tags{display:flex;flex-wrap:wrap;gap:10px}
.yf-tags span{
  display:inline-block;padding:9px 18px;border-radius:999px;
  background:#fff;border:1px solid var(--line);color:#4c586f;
  font-size:13.6px;font-weight:600;box-shadow:var(--shadow-s);
  transition:all .22s var(--ease);
}
.yf-tags span:hover{border-color:var(--gold);color:var(--gold);transform:translateY(-2px)}

/* faq */
.yf-faq details{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  margin-bottom:12px;box-shadow:var(--shadow-s);overflow:hidden;
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.yf-faq details[open]{border-color:#d9cfbd;box-shadow:var(--shadow)}
.yf-faq summary{
  list-style:none;cursor:pointer;position:relative;
  padding:19px 60px 19px 24px;font-size:16px;font-weight:700;color:var(--ink);
}
.yf-faq summary::-webkit-details-marker{display:none}
.yf-faq summary::after{
  content:"+";position:absolute;right:24px;top:50%;transform:translateY(-50%);
  font-size:22px;font-weight:400;color:var(--gold);line-height:1;
  transition:transform .24s var(--ease);
}
.yf-faq details[open] summary::after{content:"\2212"}
.yf-faq-body{padding:0 24px 22px;color:#576379;font-size:14.6px;line-height:1.9}

/* save & share */
.yf-share{
  display:grid;grid-template-columns:minmax(0,1fr) auto;gap:26px;align-items:center;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-l);
  padding:32px 34px;box-shadow:var(--shadow-s);
}
.yf-share h2{font-size:21px;margin-bottom:10px}
.yf-share p{color:#5d6981;font-size:14.6px;line-height:1.85;max-width:720px}
.yf-share-actions{display:flex;flex-wrap:wrap;gap:10px;flex:0 0 auto}

/* final cta */
.yf-final{
  position:relative;overflow:hidden;color:#e8eef7;
  background:linear-gradient(150deg,#08101e 0%,#102139 58%,#17304d 100%);
  padding:74px 0;
}
.yf-final::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(680px 340px at 84% 10%,rgba(192,138,62,.28),transparent 66%);
}
.yf-final-inner{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,.8fr);gap:42px;align-items:center}
.yf-final h2{color:#fff;font-size:clamp(23px,2.8vw,34px);margin-bottom:16px}
.yf-final p{color:#a5b5ca;font-size:15.2px;line-height:1.9;margin-bottom:8px}
.yf-final .risk{color:#7f8fa6;font-size:13px;line-height:1.8;margin-top:12px}
.yf-final-actions{display:grid;gap:12px}

/* download band */
.yf-download{
  position:relative;z-index:3;
  padding:0 0 0;
  margin-top:-46px;
}
.yf-download-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-l);
  padding:32px 34px;box-shadow:var(--shadow-l);
  display:grid;grid-template-columns:minmax(0,.92fr) minmax(0,1.08fr);
  gap:32px;align-items:center;
}
.yf-download-copy h2{font-size:clamp(20px,2.2vw,26px);margin-bottom:10px}
.yf-download-copy p{color:#5d6981;font-size:14.4px;line-height:1.85}
.yf-dl-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.yf-dl{
  display:flex;flex-direction:column;align-items:flex-start;gap:8px;
  border:1px solid var(--line);border-radius:var(--radius);padding:16px 16px;
  background:#fcfbf9;min-width:0;
  transition:all .22s var(--ease);
}
.yf-dl i{font-size:20px;color:#a9713a}
.yf-dl strong{font-size:14.4px;color:var(--ink);font-weight:800;white-space:nowrap}
.yf-dl span{font-size:11.8px;color:#8b95a8;white-space:nowrap}
.yf-dl:hover{background:#fff;border-color:var(--gold);transform:translateY(-3px);box-shadow:0 12px 26px rgba(192,138,62,.16)}
.yf-dl:hover strong{color:var(--gold)}

/* footer */
.yf-footer{background:#070e1a;color:#8494ab;padding:66px 0 26px}
.yf-footer-grid{display:grid;grid-template-columns:minmax(0,1.5fr) repeat(3,minmax(0,1fr));gap:38px}
.yf-footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.yf-footer-brand .yf-logo-mark{box-shadow:none}
.yf-footer-brand .yf-logo-name{color:#fff}
.yf-footer-brand .yf-logo-sub{color:#7d8ea6}
.yf-footer p.about{font-size:13.8px;line-height:1.9;color:#8595ac;max-width:400px}
.yf-footer h4{color:#dbe4ef;font-size:14px;margin-bottom:14px;letter-spacing:.04em}
.yf-footer-links li{margin-bottom:9px}
.yf-footer-links a{font-size:13.8px;color:#8b9bb2;transition:color .2s var(--ease)}
.yf-footer-links a:hover{color:var(--gold-2)}
.yf-footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.09);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:12.6px;color:#6d7d94;
}
.yf-footer-risk{margin-top:14px;font-size:12.2px;line-height:1.85;color:#5f6f86}

/* responsive */
@media (max-width:1024px){
  .yf-hero{padding:58px 0 52px}
  .yf-hero-grid{grid-template-columns:1fr;gap:36px}
  .yf-grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .yf-grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .yf-steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .yf-stage{grid-template-columns:1fr;gap:34px}
  .yf-split{grid-template-columns:1fr;gap:30px}
  .yf-news{grid-template-columns:1fr;gap:24px}
  .yf-final-inner{grid-template-columns:1fr;gap:28px}
  .yf-download-card{grid-template-columns:1fr;gap:24px}
  .yf-section{padding:62px 0}
  .yf-footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:30px}
}
@media (max-width:820px){
  .yf-header-inner{flex-wrap:wrap;height:auto;padding:12px 18px;gap:12px}
  .yf-nav{order:3;flex:1 1 100%;padding-bottom:2px}
  .yf-header-cta{margin-left:auto}
  .yf-logo-name{font-size:15px}
  .yf-logo-sub{display:none}
}
@media (max-width:768px){
  .yf-container{padding:0 18px}
  .yf-hero h1{font-size:clamp(24px,6.2vw,32px)}
  .yf-hero-lead{font-size:15px}
  .yf-hero-facts{grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}
  .yf-hero-fact strong{font-size:13.6px}
  .yf-hero-fact span{font-size:12px}
  .yf-window-grid{grid-template-columns:1fr}
  .yf-compare{grid-template-columns:1fr}
  .yf-channel{grid-template-columns:1fr;padding:26px 22px;gap:18px}
  .yf-share{grid-template-columns:1fr;padding:26px 22px;gap:18px}
  .yf-download{margin-top:-32px}
  .yf-download-card{padding:24px 22px}
  .yf-section-head{margin-bottom:32px}
  .yf-section{padding:54px 0}
}
@media (max-width:520px){
  .yf-grid-2,.yf-grid-3,.yf-grid-4{grid-template-columns:1fr}
  .yf-steps{grid-template-columns:1fr}
  .yf-dl-grid{grid-template-columns:1fr}
  .yf-dl{flex-direction:row;align-items:center;gap:12px;padding:14px 16px}
  .yf-dl span{margin-left:auto}
  .yf-hero-facts{grid-template-columns:1fr;gap:12px;padding-top:20px}
  .yf-hero-actions .yf-btn{width:100%}
  .yf-share-actions{width:100%}
  .yf-share-actions .yf-btn{width:100%}
  .yf-footer-grid{grid-template-columns:1fr}
  .yf-panel{padding:22px 18px 18px}
  .yf-card,.yf-group,.yf-tile{padding:22px 20px}
  .yf-faq summary{font-size:15px;padding:16px 52px 16px 18px}
  .yf-faq-body{padding:0 18px 18px;font-size:14px}
}

/* roulang page: article */
:root{
  --ink:#0a1424;
  --ink-2:#122238;
  --ink-3:#1c3350;
  --gold:#c08a3e;
  --gold-2:#e2bf85;
  --paper:#f7f5f1;
  --white:#ffffff;
  --text:#1b2432;
  --muted:#69748a;
  --line:#e4e0d8;
  --radius-s:10px;
  --radius:16px;
  --radius-l:24px;
  --shadow-s:0 2px 10px rgba(16,26,44,.06);
  --shadow:0 14px 34px rgba(16,26,44,.09);
  --shadow-l:0 28px 64px rgba(9,18,32,.18);
  --maxw:1180px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::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;
  background:var(--paper);
  color:var(--text);
  font-size:16px;
  line-height:1.78;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--gold)}
button{font:inherit;border:0;background:none;cursor:pointer;color:inherit}
p{margin:0 0 1em}
h1,h2,h3,h4{margin:0}
.yf-container{max-width:var(--maxw);margin:0 auto;padding:0 24px;width:100%}
/* ---------- Header ---------- */
.yf-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.94);
  backdrop-filter:saturate(160%) blur(12px);
  border-bottom:1px solid var(--line);
}
.yf-header-inner{
  display:flex;align-items:center;gap:20px;
  max-width:var(--maxw);margin:0 auto;padding:0 24px;height:78px;
}
.yf-logo{display:flex;align-items:center;gap:12px;flex:0 0 auto;min-width:0}
.yf-logo-mark{
  width:42px;height:42px;border-radius:13px;flex:0 0 auto;
  background:linear-gradient(140deg,var(--ink) 0%,var(--ink-3) 100%);
  color:var(--gold-2);display:grid;place-items:center;
  font-weight:800;font-size:17px;letter-spacing:.04em;
  box-shadow:var(--shadow-s);
}
.yf-logo-text{display:flex;flex-direction:column;line-height:1.2;min-width:0}
.yf-logo-name{font-size:16px;font-weight:800;color:var(--ink);white-space:nowrap}
.yf-logo-sub{font-size:10.5px;color:var(--muted);letter-spacing:.16em;white-space:nowrap}
.yf-nav{
  display:flex;align-items:center;gap:6px;flex:1 1 auto;min-width:0;
  overflow-x:auto;padding:6px 2px;scrollbar-width:none;
}
.yf-nav::-webkit-scrollbar{display:none}
.yf-nav a{
  display:inline-block;white-space:nowrap;
  padding:9px 17px;border-radius:999px;
  font-size:14.5px;font-weight:600;color:#3d4859;
  border:1px solid transparent;
  transition:all .22s var(--ease);
}
.yf-nav a:hover{background:#f1eee7;color:var(--ink)}
.yf-nav a.is-active{background:var(--ink);color:#fff;border-color:var(--ink);box-shadow:0 6px 16px rgba(10,20,36,.18)}
.yf-header-cta{flex:0 0 auto;display:flex;align-items:center;gap:10px}
.yf-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:999px;font-weight:700;font-size:14.5px;
  border:1px solid transparent;white-space:nowrap;
  transition:all .22s var(--ease);line-height:1.2;
}
.yf-btn i{font-size:.95em}
.yf-btn-primary{background:linear-gradient(135deg,var(--gold) 0%,#a9713a 100%);color:#fff;box-shadow:0 8px 20px rgba(192,138,62,.3)}
.yf-btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:0 14px 28px rgba(192,138,62,.38)}
.yf-btn-ghost{background:#fff;color:var(--ink);border-color:var(--line)}
.yf-btn-ghost:hover{color:var(--gold);border-color:var(--gold);transform:translateY(-2px)}
.yf-btn-dark{background:var(--ink);color:#fff;box-shadow:0 8px 20px rgba(10,20,36,.24)}
.yf-btn-dark:hover{color:#fff;transform:translateY(-2px);box-shadow:0 14px 28px rgba(10,20,36,.3)}
.yf-btn-light{background:rgba(255,255,255,.1);color:#fff;border-color:rgba(255,255,255,.28)}
.yf-btn-light:hover{background:rgba(255,255,255,.18);color:#fff;transform:translateY(-2px)}
.yf-btn:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid rgba(192,138,62,.5);outline-offset:2px}
.yf-btn-block{width:100%}
/* ---------- Article hero ---------- */
.ar-hero{
  position:relative;overflow:hidden;color:#e8eef7;
  padding:48px 0 62px;
  background:
    radial-gradient(1000px 520px at 84% -14%,rgba(192,138,62,.24),transparent 62%),
    radial-gradient(760px 460px at 4% 110%,rgba(28,51,80,.85),transparent 70%),
    linear-gradient(158deg,#070e1b 0%,#0d1a2d 54%,#122740 100%);
}
.ar-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:68px 68px;
  -webkit-mask-image:linear-gradient(180deg,#000 0%,transparent 82%);
  mask-image:linear-gradient(180deg,#000 0%,transparent 82%);
}
.ar-hero-inner{position:relative;z-index:2}
.ar-breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:12.5px;color:#8fa1b8;margin-bottom:22px;
}
.ar-breadcrumb a{color:#b7c4d6}
.ar-breadcrumb a:hover{color:var(--gold-2)}
.ar-breadcrumb .sep{color:#4a5b73}
.ar-hero h1{
  color:#fff;font-size:clamp(24px,3.3vw,38px);line-height:1.34;
  font-weight:800;letter-spacing:-.012em;margin:0 0 18px;max-width:900px;
  overflow-wrap:break-word;
}
.ar-hero-lead{
  color:#b7c4d6;font-size:15.5px;line-height:1.92;max-width:860px;margin:0 0 26px;
}
.ar-meta{display:flex;flex-wrap:wrap;gap:10px}
.ar-meta-item{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;font-size:12.5px;font-weight:600;
  color:#d6e0ee;background:rgba(255,255,255,.07);
  border:1px solid rgba(226,191,133,.26);
}
.ar-meta-item i{color:var(--gold-2);font-size:11.5px}
/* ---------- Body layout ---------- */
.ar-body{padding:64px 0 72px}
.ar-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 330px;
  gap:38px;align-items:start;
}
.ar-article{
  background:var(--white);border:1px solid var(--line);
  border-radius:var(--radius-l);padding:40px 42px;
  box-shadow:var(--shadow-s);min-width:0;
}
.ar-article-head{
  display:flex;align-items:center;justify-content:space-between;
  gap:16px;flex-wrap:wrap;padding-bottom:20px;margin-bottom:26px;
  border-bottom:1px solid var(--line);
}
.ar-article-head h2{
  font-size:16px;font-weight:800;color:var(--ink);
  display:inline-flex;align-items:center;gap:10px;
}
.ar-article-head h2::before{
  content:"";width:6px;height:18px;border-radius:3px;
  background:linear-gradient(180deg,var(--gold),var(--gold-2));
}
.ar-article-head span{font-size:12.5px;color:var(--muted)}
.ar-content{font-size:16.5px;line-height:1.95;color:#26313f;overflow-wrap:break-word;min-width:0}
.ar-content p{margin:0 0 1.15em}
.ar-content h2{
  font-size:21px;line-height:1.5;color:var(--ink);font-weight:800;
  margin:1.9em 0 .75em;padding-left:14px;border-left:4px solid var(--gold);
}
.ar-content h3{font-size:17.5px;line-height:1.6;color:var(--ink-2);font-weight:700;margin:1.6em 0 .6em}
.ar-content h4{font-size:16px;color:var(--ink-2);font-weight:700;margin:1.4em 0 .5em}
.ar-content ul,.ar-content ol{padding-left:1.35em;margin:0 0 1.15em}
.ar-content ul{list-style:disc}
.ar-content ol{list-style:decimal}
.ar-content li{margin-bottom:.55em}
.ar-content strong{color:var(--ink);font-weight:700}
.ar-content a{color:var(--gold);text-decoration:underline;text-underline-offset:3px}
.ar-content blockquote{
  margin:1.5em 0;padding:16px 22px;background:#faf8f3;
  border-left:4px solid var(--gold-2);border-radius:0 var(--radius-s) var(--radius-s) 0;
  color:#4a5568;font-size:15.5px;
}
.ar-content blockquote p:last-child{margin-bottom:0}
.ar-content img{border-radius:var(--radius);margin:1.3em 0}
.ar-content table{width:100%;border-collapse:collapse;margin:1.3em 0;font-size:15px}
.ar-content th,.ar-content td{border:1px solid var(--line);padding:10px 13px;text-align:left}
.ar-content th{background:#f4f1ea;font-weight:700;color:var(--ink)}
.ar-content code{background:#f2efe9;border-radius:5px;padding:2px 6px;font-size:14px}
.ar-empty{text-align:center;padding:34px 10px}
.ar-empty h2{font-size:21px;color:var(--ink);margin-bottom:12px}
.ar-empty p{color:var(--muted);font-size:15px;margin-bottom:24px}
/* ---------- Sidebar ---------- */
.ar-side{position:sticky;top:100px;display:grid;gap:18px;min-width:0}
.ar-card{
  background:var(--white);border:1px solid var(--line);
  border-radius:var(--radius);padding:22px 22px 20px;
  box-shadow:var(--shadow-s);
}
.ar-card h3{
  font-size:14px;font-weight:800;color:var(--ink);margin:0 0 16px;
  display:flex;align-items:center;gap:9px;letter-spacing:.02em;
}
.ar-card h3 i{color:var(--gold)}
.ar-info-list{display:grid;gap:12px}
.ar-info-list li{
  display:flex;justify-content:space-between;gap:12px;
  font-size:13.5px;color:var(--muted);padding-bottom:12px;
  border-bottom:1px dashed var(--line);align-items:flex-start;
}
.ar-info-list li:last-child{border-bottom:0;padding-bottom:0}
.ar-info-list b{color:var(--ink);font-weight:700;text-align:right;overflow-wrap:anywhere}
.ar-dl-list{display:grid;gap:10px}
.ar-dl-list .yf-btn{font-size:13.5px;padding:11px 16px}
.ar-side-note{
  font-size:12.5px;line-height:1.8;color:var(--muted);margin:14px 0 0;
  padding-top:14px;border-top:1px solid var(--line);
}
.ar-side-dark{
  background:linear-gradient(152deg,#0b1526 0%,#17304b 100%);
  border:1px solid rgba(226,191,133,.24);color:#c3d0e0;
}
.ar-side-dark h3{color:#fff}
.ar-side-dark h3 i{color:var(--gold-2)}
.ar-side-dark p{font-size:13px;line-height:1.85;color:#a9b9cc;margin:0}
.ar-side-dark p + p{margin-top:10px}
/* ---------- Pull quote band ---------- */
.ar-quote{
  position:relative;overflow:hidden;color:#dbe6f3;
  padding:62px 0;
  background:
    radial-gradient(720px 380px at 88% 0%,rgba(192,138,62,.22),transparent 62%),
    linear-gradient(150deg,#08111f 0%,#132a44 100%);
}
.ar-quote::after{
  content:"”";position:absolute;right:4%;top:-30px;
  font-size:220px;line-height:1;color:rgba(226,191,133,.09);
  font-family:Georgia,serif;pointer-events:none;
}
.ar-quote-inner{position:relative;z-index:2;max-width:880px}
.ar-quote blockquote{
  margin:0;font-size:clamp(17px,2.1vw,23px);line-height:1.76;
  font-weight:600;color:#eaf1f9;letter-spacing:.005em;
}
.ar-quote cite{
  display:block;margin-top:20px;font-style:normal;font-size:13px;
  color:var(--gold-2);letter-spacing:.08em;font-weight:700;
}
/* ---------- Generic section ---------- */
.ar-section{padding:72px 0}
.ar-section.is-alt{background:#f1eee7}
.ar-sec-head{max-width:760px;margin-bottom:38px}
.ar-sec-head .kicker{
  display:inline-flex;align-items:center;gap:9px;
  font-size:12px;font-weight:700;letter-spacing:.16em;color:var(--gold);
  text-transform:uppercase;margin-bottom:14px;
}
.ar-sec-head .kicker::before{content:"";width:26px;height:2px;background:var(--gold)}
.ar-sec-head h2{
  font-size:clamp(22px,2.7vw,30px);line-height:1.36;color:var(--ink);
  font-weight:800;letter-spacing:-.01em;margin-bottom:14px;
}
.ar-sec-head p{color:var(--muted);font-size:15.5px;line-height:1.9;margin:0}
/* ---------- Flow ---------- */
.ar-flow{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.ar-flow-item{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 22px;min-width:0;position:relative;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease);
}
.ar-flow-item:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#d9cfbc}
.ar-flow-num{
  display:inline-grid;place-items:center;width:34px;height:34px;border-radius:11px;
  background:linear-gradient(140deg,var(--ink),var(--ink-3));color:var(--gold-2);
  font-size:13.5px;font-weight:800;margin-bottom:16px;
}
.ar-flow-item h3{font-size:16px;color:var(--ink);font-weight:800;margin-bottom:9px;line-height:1.5}
.ar-flow-item p{font-size:13.8px;line-height:1.82;color:var(--muted);margin:0}
/* ---------- Download ---------- */
.dl-box{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius-l);
  padding:38px 36px;box-shadow:var(--shadow);min-width:0;
}
.dl-head{display:flex;align-items:flex-end;justify-content:space-between;gap:26px;flex-wrap:wrap;margin-bottom:28px}
.dl-head h2{font-size:clamp(21px,2.5vw,27px);color:var(--ink);font-weight:800;line-height:1.4;margin-bottom:10px}
.dl-head p{color:var(--muted);font-size:14.5px;line-height:1.85;margin:0;max-width:620px}
.dl-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.dl-card{
  border:1px solid var(--line);border-radius:var(--radius);background:#faf9f6;
  padding:24px 20px;text-align:center;min-width:0;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s var(--ease),background .25s var(--ease);
}
.dl-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:rgba(192,138,62,.45);background:#fff}
.dl-icon{
  width:48px;height:48px;border-radius:14px;margin:0 auto 14px;
  display:grid;place-items:center;font-size:19px;
  background:linear-gradient(140deg,#0d1a2d,#1c3350);color:var(--gold-2);
  box-shadow:0 8px 18px rgba(10,20,36,.18);
}
.dl-card h3{font-size:15.5px;color:var(--ink);font-weight:800;margin-bottom:6px}
.dl-card span{display:block;font-size:12.5px;color:var(--muted);margin-bottom:16px}
.dl-tip{
  margin-top:22px;padding-top:18px;border-top:1px dashed var(--line);
  font-size:12.5px;color:var(--muted);line-height:1.8;
}
/* ---------- Notes grid ---------- */
.ar-notes{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.ar-note{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 24px;min-width:0;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease);
}
.ar-note:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.ar-note-tag{
  display:inline-block;font-size:11.5px;font-weight:700;letter-spacing:.08em;
  color:var(--gold);background:rgba(192,138,62,.1);border-radius:999px;
  padding:4px 11px;margin-bottom:14px;
}
.ar-note h3{font-size:16.5px;color:var(--ink);font-weight:800;margin-bottom:10px;line-height:1.55}
.ar-note p{font-size:14px;line-height:1.88;color:var(--muted);margin:0}
/* ---------- FAQ ---------- */
.ar-faq{display:grid;gap:12px;max-width:920px}
.ar-faq details{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
  padding:0 24px;transition:border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.ar-faq details[open]{border-color:rgba(192,138,62,.45);box-shadow:var(--shadow-s)}
.ar-faq summary{
  list-style:none;cursor:pointer;padding:20px 34px 20px 0;position:relative;
  font-size:15.5px;font-weight:700;color:var(--ink);line-height:1.6;
}
.ar-faq summary::-webkit-details-marker{display:none}
.ar-faq summary::after{
  content:"+";position:absolute;right:0;top:50%;transform:translateY(-50%);
  font-size:20px;font-weight:400;color:var(--gold);transition:transform .25s var(--ease);
  line-height:1;
}
.ar-faq details[open] summary::after{content:"–"}
.ar-faq .faq-body{padding:0 0 20px;font-size:14.5px;line-height:1.9;color:var(--muted)}
.ar-faq .faq-body p:last-child{margin-bottom:0}
/* ---------- Closing CTA ---------- */
.ar-cta{
  position:relative;overflow:hidden;border-radius:var(--radius-l);
  padding:44px 42px;color:#e8eef7;
  background:
    radial-gradient(620px 320px at 90% -20%,rgba(192,138,62,.3),transparent 62%),
    linear-gradient(150deg,#0a1424 0%,#162b45 100%);
  box-shadow:var(--shadow-l);
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.ar-cta h2{color:#fff;font-size:clamp(20px,2.5vw,26px);font-weight:800;line-height:1.45;margin-bottom:10px}
.ar-cta p{color:#a9b9cc;font-size:14.5px;line-height:1.85;margin:0;max-width:620px}
.ar-cta-actions{display:flex;flex-wrap:wrap;gap:12px}
/* ---------- Footer ---------- */
.yf-footer{background:var(--ink);color:#a8b6c9;padding:62px 0 0}
.yf-footer-grid{
  display:grid;grid-template-columns:minmax(0,1.6fr) repeat(3,minmax(0,1fr));
  gap:42px;padding-bottom:44px;border-bottom:1px solid rgba(255,255,255,.1);
}
.yf-footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.yf-footer-brand .yf-logo-mark{background:rgba(255,255,255,.1);color:var(--gold-2);box-shadow:none}
.yf-footer .yf-logo-name{color:#fff}
.yf-footer .yf-logo-sub{color:#8b9cb3}
.yf-footer .about{font-size:13.5px;line-height:1.88;color:#93a3b8;max-width:360px;margin:0}
.yf-footer h4{color:#fff;font-size:14px;margin:0 0 16px;font-weight:700;letter-spacing:.02em}
.yf-footer-links{list-style:none;margin:0;padding:0}
.yf-footer-links li{margin-bottom:10px}
.yf-footer-links a{font-size:13.5px;color:#93a3b8;display:inline-block;transition:color .2s var(--ease),transform .2s var(--ease)}
.yf-footer-links a:hover{color:var(--gold-2);transform:translateX(3px)}
.yf-footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:22px 0;font-size:12.5px;color:#7f8fa5;
}
.yf-footer-risk{
  font-size:12px;line-height:1.85;color:#6d7d93;margin:0;
  padding:18px 0 30px;border-top:1px solid rgba(255,255,255,.07);
}
/* ---------- Responsive ---------- */
@media (max-width:1024px){
  .ar-layout{grid-template-columns:minmax(0,1fr)}
  .ar-side{position:static;grid-template-columns:repeat(2,minmax(0,1fr))}
  .ar-article{padding:34px 30px}
  .ar-flow{grid-template-columns:repeat(2,minmax(0,1fr))}
  .ar-notes{grid-template-columns:repeat(2,minmax(0,1fr))}
  .yf-footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:34px}
}
@media (max-width:900px){
  .yf-header-inner{flex-wrap:wrap;height:auto;padding:12px 18px;gap:12px}
  .yf-nav{order:3;flex:1 0 100%;padding:2px 0 4px}
  .yf-header-cta{margin-left:auto}
}
@media (max-width:768px){
  .ar-hero{padding:38px 0 48px}
  .ar-body{padding:48px 0 56px}
  .ar-section{padding:54px 0}
  .ar-quote{padding:48px 0}
  .ar-quote::after{font-size:150px;top:-16px}
  .dl-grid{grid-template-columns:minmax(0,1fr)}
  .dl-box{padding:28px 22px}
  .ar-cta{padding:32px 26px}
  .yf-container{padding:0 18px}
  .ar-article{padding:26px 20px;border-radius:var(--radius)}
}
@media (max-width:640px){
  .ar-side{grid-template-columns:minmax(0,1fr)}
  .ar-flow{grid-template-columns:minmax(0,1fr)}
  .ar-notes{grid-template-columns:minmax(0,1fr)}
  .yf-footer-grid{grid-template-columns:minmax(0,1fr)}
}
@media (max-width:520px){
  body{font-size:15.5px}
  .yf-logo-name{font-size:15px}
  .yf-logo-sub{font-size:10px;letter-spacing:.12em}
  .yf-logo-mark{width:38px;height:38px;border-radius:12px;font-size:15px}
  .yf-btn{padding:11px 18px;font-size:13.5px}
  .yf-header-cta .yf-btn{padding:9px 14px;font-size:12.5px}
  .ar-hero h1{font-size:22px}
  .ar-hero-lead{font-size:14.5px}
  .ar-article{padding:22px 16px}
  .ar-content{font-size:16px}
  .ar-content h2{font-size:19px}
  .ar-meta-item{font-size:11.5px;padding:5px 11px}
  .ar-cta-actions{width:100%}
  .ar-cta-actions .yf-btn{flex:1 1 100%}
}

/* roulang page: category1 */
:root{
  --ink:#0a1424;
  --ink-2:#122238;
  --ink-3:#1c3350;
  --gold:#c08a3e;
  --gold-2:#e2bf85;
  --paper:#f7f5f1;
  --white:#ffffff;
  --text:#1b2432;
  --muted:#69748a;
  --line:#e4e0d8;
  --radius-s:10px;
  --radius:16px;
  --radius-l:24px;
  --shadow-s:0 2px 10px rgba(16,26,44,.06);
  --shadow:0 14px 34px rgba(16,26,44,.09);
  --shadow-l:0 28px 64px rgba(9,18,32,.18);
  --maxw:1180px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::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;
  background:var(--paper);
  color:var(--text);
  font-size:16px;
  line-height:1.78;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4{margin:0;font-weight:800;color:var(--ink);line-height:1.34;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--gold)}
button{font:inherit;border:0;background:none;cursor:pointer;color:inherit}
.yf-container{max-width:var(--maxw);margin:0 auto;padding:0 24px;width:100%}

/* ---------- Header ---------- */
.yf-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.94);
  backdrop-filter:saturate(160%) blur(12px);
  border-bottom:1px solid var(--line);
}
.yf-header-inner{
  display:flex;align-items:center;gap:20px;
  max-width:var(--maxw);margin:0 auto;padding:0 24px;height:78px;
}
.yf-logo{display:flex;align-items:center;gap:12px;flex:0 0 auto;min-width:0}
.yf-logo-mark{
  width:42px;height:42px;border-radius:13px;flex:0 0 auto;
  background:linear-gradient(140deg,var(--ink) 0%,var(--ink-3) 100%);
  color:var(--gold-2);display:grid;place-items:center;
  font-weight:800;font-size:17px;letter-spacing:.04em;
  box-shadow:var(--shadow-s);
}
.yf-logo-text{display:flex;flex-direction:column;line-height:1.2;min-width:0}
.yf-logo-name{font-size:16px;font-weight:800;color:var(--ink);white-space:nowrap}
.yf-logo-sub{font-size:10.5px;color:var(--muted);letter-spacing:.16em;white-space:nowrap}
.yf-nav{
  display:flex;align-items:center;gap:6px;flex:1 1 auto;min-width:0;
  overflow-x:auto;padding:6px 2px;scrollbar-width:none;
}
.yf-nav::-webkit-scrollbar{display:none}
.yf-nav a{
  display:inline-block;white-space:nowrap;
  padding:9px 17px;border-radius:999px;
  font-size:14.5px;font-weight:600;color:#3d4859;
  border:1px solid transparent;
  transition:all .22s var(--ease);
}
.yf-nav a:hover{background:#f1eee7;color:var(--ink)}
.yf-nav a.is-active{background:var(--ink);color:#fff;border-color:var(--ink);box-shadow:0 6px 16px rgba(10,20,36,.18)}
.yf-header-cta{flex:0 0 auto;display:flex;align-items:center;gap:10px}

/* ---------- Buttons ---------- */
.yf-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:999px;font-weight:700;font-size:14.5px;
  border:1px solid transparent;white-space:nowrap;
  transition:all .22s var(--ease);line-height:1.2;
}
.yf-btn i{font-size:.95em}
.yf-btn-primary{background:linear-gradient(135deg,var(--gold) 0%,#a9713a 100%);color:#fff;box-shadow:0 8px 20px rgba(192,138,62,.3)}
.yf-btn-primary:hover{color:#fff;transform:translateY(-2px);box-shadow:0 14px 28px rgba(192,138,62,.38)}
.yf-btn-ghost{background:#fff;color:var(--ink);border-color:var(--line)}
.yf-btn-ghost:hover{color:var(--gold);border-color:var(--gold);transform:translateY(-2px)}
.yf-btn-dark{background:var(--ink);color:#fff;box-shadow:0 8px 20px rgba(10,20,36,.24)}
.yf-btn-dark:hover{color:#fff;transform:translateY(-2px);box-shadow:0 14px 28px rgba(10,20,36,.3)}
.yf-btn-light{background:rgba(255,255,255,.1);color:#fff;border-color:rgba(255,255,255,.28)}
.yf-btn-light:hover{background:rgba(255,255,255,.18);color:#fff;transform:translateY(-2px)}
.yf-btn:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid rgba(192,138,62,.5);outline-offset:2px}

/* ---------- Hero ---------- */
.yf-hero{
  position:relative;overflow:hidden;color:#e8eef7;
  padding:70px 0 64px;
  background:
    radial-gradient(1100px 560px at 82% -12%,rgba(192,138,62,.24),transparent 62%),
    radial-gradient(800px 500px at 6% 108%,rgba(28,51,80,.85),transparent 70%),
    linear-gradient(158deg,#070e1b 0%,#0d1a2d 54%,#122740 100%);
}
.yf-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  background-size:68px 68px;
  -webkit-mask-image:linear-gradient(180deg,#000 0%,transparent 78%);
  mask-image:linear-gradient(180deg,#000 0%,transparent 78%);
}
.yf-hero-inner{position:relative;z-index:2}
.yf-crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:#8d9db6;margin-bottom:22px;flex-wrap:wrap}
.yf-crumb a{color:#b6c4d8}
.yf-crumb a:hover{color:var(--gold-2)}
.yf-crumb span.sep{color:#4c5b73}
.yf-hero-grid{
  display:grid;grid-template-columns:minmax(0,1.08fr) minmax(0,.92fr);
  gap:48px;align-items:start;
}
.yf-hero-tag{
  display:inline-flex;align-items:center;gap:10px;
  padding:7px 16px;border-radius:999px;
  background:rgba(255,255,255,.07);
  border:1px solid rgba(226,191,133,.34);
  color:var(--gold-2);font-size:12.5px;font-weight:700;letter-spacing:.1em;
  margin-bottom:22px;
}
.yf-hero-tag span.dot{width:6px;height:6px;border-radius:50%;background:var(--gold-2);box-shadow:0 0 0 4px rgba(226,191,133,.16)}
.yf-hero h1{
  color:#fff;font-size:clamp(26px,3.7vw,40px);line-height:1.28;
  letter-spacing:-.015em;margin-bottom:20px;font-weight:800;
}
.yf-hero h1 em{font-style:normal;color:var(--gold-2)}
.yf-hero-lead{color:#b7c4d6;font-size:15.5px;line-height:1.92;margin-bottom:28px;max-width:620px}
.yf-hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:32px}
.yf-hero-facts{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;
  border-top:1px solid rgba(255,255,255,.12);padding-top:24px;
}
.yf-hero-fact{min-width:0}
.yf-hero-fact strong{display:block;color:#fff;font-size:14.5px;font-weight:800;margin-bottom:4px}
.yf-hero-fact span{display:block;color:#8899b1;font-size:12.5px;line-height:1.62}
.yf-panel{
  background:linear-gradient(158deg,rgba(255,255,255,.09) 0%,rgba(255,255,255,.03) 100%);
  border:1px solid rgba(255,255,255,.16);
  border-radius:var(--radius-l);
  padding:24px 22px 20px;
  box-shadow:var(--shadow-l);
  backdrop-filter:blur(6px);
}
.yf-panel-top{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:6px}
.yf-panel-label{color:#fff;font-size:15px;font-weight:800;letter-spacing:.02em}
.yf-panel-chip{
  font-size:11px;font-weight:700;letter-spacing:.08em;color:var(--gold-2);
  border:1px solid rgba(226,191,133,.36);padding:4px 10px;border-radius:999px;white-space:nowrap;
}
.yf-rank-list{display:grid;gap:9px;margin-top:14px}
.yf-rank-list li{
  display:flex;gap:12px;align-items:flex-start;min-width:0;
  padding:11px 13px;border-radius:12px;
  background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.09);
  transition:all .22s var(--ease);
}
.yf-rank-list li:hover{background:rgba(255,255,255,.09);border-color:rgba(226,191,133,.34);transform:translateX(3px)}
.yf-rank-no{flex:0 0 auto;font-size:11.5px;font-weight:800;color:var(--gold-2);letter-spacing:.06em;padding-top:3px}
.yf-rank-list strong{display:block;color:#fff;font-size:14px;font-weight:700;line-height:1.5}
.yf-rank-list em{display:block;font-style:normal;color:#93a4bb;font-size:12.5px;line-height:1.6}
.yf-panel-foot{
  margin-top:16px;padding-top:14px;border-top:1px dashed rgba(255,255,255,.16);
  font-size:12px;color:#8b9cb5;line-height:1.7;
}

/* ---------- Section ---------- */
.yf-section{padding:74px 0}
.yf-section--white{background:var(--white)}
.yf-section--dark{
  background:linear-gradient(160deg,#0a1424 0%,#122740 100%);
  color:#dfe7f2;
}
.yf-section--dark h2,.yf-section--dark h3{color:#fff}
.yf-sec-head{max-width:760px;margin-bottom:38px}
.yf-eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-size:12px;font-weight:800;letter-spacing:.16em;color:var(--gold);
  margin-bottom:14px;
}
.yf-eyebrow::before{content:"";width:22px;height:2px;background:var(--gold);display:inline-block}
.yf-section--dark .yf-eyebrow{color:var(--gold-2)}
.yf-sec-head h2{font-size:clamp(22px,2.6vw,31px);margin-bottom:14px}
.yf-sec-head p{color:var(--muted);font-size:15.5px;line-height:1.9}
.yf-section--dark .yf-sec-head p{color:#a9b8cc}

/* ---------- Grid & Cards ---------- */
.yf-grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
.yf-grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.yf-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:26px 24px;box-shadow:var(--shadow-s);min-width:0;
  transition:transform .26s var(--ease),box-shadow .26s var(--ease),border-color .26s var(--ease);
}
.yf-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#d6cfc0}
.yf-card-icon{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(140deg,#fbf4e8,#f2e6d1);color:var(--gold);
  font-size:18px;margin-bottom:16px;
}
.yf-card h3{font-size:17px;margin-bottom:10px}
.yf-card p{color:var(--muted);font-size:14.5px;line-height:1.85}
.yf-card ul{margin-top:12px;display:grid;gap:7px}
.yf-card ul li{
  position:relative;padding-left:16px;font-size:13.5px;color:#536074;line-height:1.75;
}
.yf-card ul li::before{
  content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:50%;
  background:var(--gold);opacity:.75;
}

/* ---------- Steps ---------- */
.yf-steps{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:16px;align-items:stretch}
.yf-step{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:22px 18px;min-width:0;box-shadow:var(--shadow-s);
  transition:transform .26s var(--ease),box-shadow .26s var(--ease);
}
.yf-step:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.yf-step-no{
  display:inline-flex;align-items:center;justify-content:center;
  width:30px;height:30px;border-radius:9px;margin-bottom:14px;
  background:var(--ink);color:var(--gold-2);font-size:13px;font-weight:800;
}
.yf-step h3{font-size:15.5px;margin-bottom:8px}
.yf-step p{font-size:13.5px;color:var(--muted);line-height:1.78}

/* ---------- Split block ---------- */
.yf-split{display:grid;grid-template-columns:minmax(0,1.02fr) minmax(0,.98fr);gap:40px;align-items:start}
.yf-split h2{font-size:clamp(21px,2.4vw,29px);margin-bottom:16px}
.yf-split p{color:var(--muted);font-size:15px;line-height:1.92;margin-bottom:14px}
.yf-check-list{display:grid;gap:12px;margin-top:6px}
.yf-check-item{
  display:flex;gap:14px;align-items:flex-start;min-width:0;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-s);
  padding:15px 17px;box-shadow:var(--shadow-s);
  transition:border-color .22s var(--ease),transform .22s var(--ease);
}
.yf-check-item:hover{border-color:var(--gold);transform:translateX(3px)}
.yf-check-item i{color:var(--gold);font-size:15px;margin-top:3px;flex:0 0 auto}
.yf-check-item strong{display:block;font-size:14.5px;color:var(--ink);margin-bottom:3px}
.yf-check-item span{display:block;font-size:13.5px;color:var(--muted);line-height:1.72}

/* ---------- Dark param cards ---------- */
.yf-param-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.yf-param{
  min-width:0;border-radius:var(--radius);padding:24px 22px;
  background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.13);
  transition:all .26s var(--ease);
}
.yf-param:hover{background:rgba(255,255,255,.09);border-color:rgba(226,191,133,.42);transform:translateY(-3px)}
.yf-param h3{font-size:16.5px;margin-bottom:10px;color:#fff}
.yf-param p{font-size:14px;color:#a8b7cb;line-height:1.85}
.yf-param .yf-param-tag{
  display:inline-block;font-size:11.5px;font-weight:700;letter-spacing:.08em;
  color:var(--gold-2);border:1px solid rgba(226,191,133,.34);
  border-radius:999px;padding:3px 10px;margin-bottom:12px;
}

/* ---------- Download ---------- */
.yf-download{
  position:relative;overflow:hidden;border-radius:var(--radius-l);
  padding:44px 40px;
  background:
    radial-gradient(700px 340px at 88% -20%,rgba(192,138,62,.3),transparent 66%),
    linear-gradient(150deg,#0a1424 0%,#16304d 100%);
  color:#e8eef7;box-shadow:var(--shadow-l);
}
.yf-download-grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:34px;align-items:center}
.yf-download h2{color:#fff;font-size:clamp(21px,2.5vw,28px);margin-bottom:12px}
.yf-download p{color:#b3c2d6;font-size:14.5px;line-height:1.88}
.yf-dl-btns{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.yf-dl-btn{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;
  padding:18px 10px;border-radius:14px;text-align:center;min-width:0;
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.2);
  transition:all .24s var(--ease);
}
.yf-dl-btn i{font-size:19px;color:var(--gold-2)}
.yf-dl-btn strong{font-size:14px;color:#fff;font-weight:700;white-space:nowrap}
.yf-dl-btn span{font-size:11.5px;color:#93a4bb;white-space:nowrap}
.yf-dl-btn:hover{background:rgba(226,191,133,.16);border-color:rgba(226,191,133,.55);transform:translateY(-3px);color:#fff}
.yf-download-note{margin-top:22px;font-size:12.5px;color:#8b9cb5;line-height:1.75}

/* ---------- News ---------- */
.yf-news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.yf-news-card{
  display:flex;flex-direction:column;gap:10px;min-width:0;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:22px 22px 20px;box-shadow:var(--shadow-s);
  transition:transform .26s var(--ease),box-shadow .26s var(--ease),border-color .26s var(--ease);
}
.yf-news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#d6cfc0;color:inherit}
.yf-news-card h3{
  font-size:16px;line-height:1.55;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.yf-news-card p{
  font-size:13.5px;color:var(--muted);line-height:1.8;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.yf-news-meta{
  margin-top:auto;padding-top:12px;border-top:1px dashed var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  font-size:12.5px;color:#8b95a7;flex-wrap:wrap;
}
.yf-news-meta .yf-news-cat{color:var(--gold);font-weight:700}
.yf-empty{
  padding:32px;text-align:center;color:var(--muted);font-size:14px;
  background:#fff;border:1px dashed var(--line);border-radius:var(--radius);
}

/* ---------- FAQ ---------- */
.yf-faq{display:grid;gap:12px;max-width:920px}
.yf-faq details{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-s);
  padding:0 20px;box-shadow:var(--shadow-s);transition:border-color .22s var(--ease);
}
.yf-faq details[open]{border-color:#d6cfc0}
.yf-faq summary{
  cursor:pointer;list-style:none;padding:17px 26px 17px 0;position:relative;
  font-size:15px;font-weight:700;color:var(--ink);line-height:1.6;
}
.yf-faq summary::-webkit-details-marker{display:none}
.yf-faq summary::after{
  content:"+";position:absolute;right:0;top:15px;
  width:22px;height:22px;line-height:20px;text-align:center;border-radius:50%;
  background:#f2ece1;color:var(--gold);font-weight:800;font-size:14px;
  transition:transform .22s var(--ease);
}
.yf-faq details[open] summary::after{content:"−";transform:rotate(180deg)}
.yf-faq .yf-faq-body{padding:0 0 18px;font-size:14px;color:var(--muted);line-height:1.9}

/* ---------- CTA ---------- */
.yf-cta{
  border-radius:var(--radius-l);padding:46px 40px;text-align:center;
  background:linear-gradient(150deg,#fbf7ef 0%,#f2e9da 100%);
  border:1px solid #e8ddc9;box-shadow:var(--shadow-s);
}
.yf-cta h2{font-size:clamp(21px,2.5vw,28px);margin-bottom:14px}
.yf-cta p{color:#6b6656;font-size:14.5px;line-height:1.9;max-width:720px;margin:0 auto 24px}
.yf-cta-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}

/* ---------- Footer ---------- */
.yf-footer{background:#070e1b;color:#a4b2c6;padding:60px 0 26px;margin-top:0}
.yf-footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:34px;padding-bottom:36px;border-bottom:1px solid rgba(255,255,255,.1)}
.yf-footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.yf-footer .yf-logo-name{color:#fff}
.yf-footer .yf-logo-sub{color:#7d8ea6}
.yf-footer .about{font-size:13.5px;line-height:1.9;color:#8697ae;max-width:420px}
.yf-footer h4{color:#fff;font-size:14.5px;margin-bottom:16px;letter-spacing:.02em}
.yf-footer-links{display:grid;gap:10px}
.yf-footer-links a{font-size:13.5px;color:#93a4bb}
.yf-footer-links a:hover{color:var(--gold-2)}
.yf-footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  padding-top:22px;font-size:12.5px;color:#75859c;
}
.yf-footer-risk{margin-top:14px;font-size:12px;color:#5f6f87;line-height:1.8}

/* ---------- Responsive ---------- */
@media (max-width:1024px){
  .yf-hero-grid{grid-template-columns:minmax(0,1fr);gap:34px}
  .yf-steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .yf-grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .yf-news-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .yf-download-grid{grid-template-columns:minmax(0,1fr);gap:26px}
  .yf-footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:28px}
}
@media (max-width:767px){
  .yf-header-inner{height:66px;gap:12px;padding:0 16px}
  .yf-logo-name{font-size:14px}
  .yf-logo-sub{display:none}
  .yf-header-cta{display:none}
  .yf-container{padding:0 16px}
  .yf-section{padding:52px 0}
  .yf-hero{padding:48px 0 44px}
  .yf-grid-2,.yf-grid-3,.yf-param-grid,.yf-news-grid{grid-template-columns:minmax(0,1fr)}
  .yf-steps{grid-template-columns:minmax(0,1fr)}
  .yf-split{grid-template-columns:minmax(0,1fr);gap:26px}
  .yf-hero-facts{grid-template-columns:minmax(0,1fr);gap:12px}
  .yf-download{padding:32px 22px}
  .yf-dl-btns{grid-template-columns:minmax(0,1fr)}
  .yf-dl-btn{flex-direction:row;justify-content:flex-start;gap:10px;padding:15px 18px}
  .yf-cta{padding:34px 22px}
  .yf-footer{padding:46px 0 22px}
  .yf-footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
  .yf-footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
}
@media (max-width:520px){
  .yf-logo-mark{width:36px;height:36px;border-radius:11px;font-size:15px}
  .yf-hero h1{font-size:24px}
  .yf-hero-lead{font-size:14.5px}
  .yf-hero-actions .yf-btn{width:100%}
  .yf-footer-grid{grid-template-columns:minmax(0,1fr)}
  .yf-cta-actions .yf-btn{width:100%}
}