:root{
  --bg:#f3f6fc; --surface:#fff; --surface-2:#eef3fb; --text:#10203a; --muted:#3f4d66;
  --line:#d5deee; --brand:#1556d6; --brand-dark:#0c3a99; --navy:#0b2a6b; --brand-soft:#e3ecfd;
  --accent:#ffc83d; --accent-ink:#3a2a00; --err:#b3261e; --err-soft:#fdeceb; --brand-ink:#fff; --shadow:0 12px 32px rgba(21,86,214,.10); --r:18px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:76px}
body{margin:0;background:var(--bg);color:var(--text);font:17px/1.65 system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;-webkit-font-smoothing:antialiased}
a{color:var(--brand)}
img,svg{max-width:100%}
.wrap{max-width:1120px;margin:0 auto;padding:0 16px}
.skip{position:absolute;left:-999px}
.skip:focus{left:16px;top:8px;background:#fff;padding:8px 12px;border-radius:8px;z-index:99}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px}

/* header */
.bar{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.bar .wrap{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:64px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;text-decoration:none;color:var(--text);font-size:19px}
.logo i{width:36px;height:36px;border-radius:10px;background:var(--brand);display:grid;place-items:center}
.logo svg{width:21px;height:21px;fill:#fff}
.menu{display:flex;gap:22px;align-items:center}
.menu a{color:var(--text);text-decoration:none;font-weight:600;font-size:15.5px}
.menu a:hover{color:var(--brand)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:12px 22px;border-radius:12px;font-weight:700;text-decoration:none;border:2px solid transparent;font-size:16.5px;transition:transform .15s,box-shadow .15s,background .15s}
.btn:hover{transform:translateY(-1px)}
.btn-main{background:var(--accent);color:var(--accent-ink);box-shadow:0 8px 20px rgba(255,200,61,.35)}
.btn-main:hover{background:#ffd45f}
.btn-ghost{background:rgba(255,255,255,.08);color:#fff;border-color:rgba(255,255,255,.55)}
.btn-ghost:hover{background:rgba(255,255,255,.18)}
.btn-line{background:#fff;color:var(--brand);border-color:var(--brand)}
.btn-sm{min-height:42px;padding:8px 16px;font-size:15px}
@media(max-width:820px){.menu a:not(.btn){display:none}}

/* footer */
.site-foot{border-top:1px solid var(--line);margin-top:56px;padding:34px 0 44px;color:var(--muted);font-size:15px;background:var(--surface)}
.site-foot .row{display:flex;flex-wrap:wrap;justify-content:space-between;gap:14px 28px}
.site-foot .logo{font-size:17px}
.site-foot nav{display:flex;flex-wrap:wrap;gap:8px 20px}
.site-foot nav a{color:var(--muted);text-decoration:none;font-weight:600}
.site-foot nav a:hover{color:var(--brand)}
.site-foot .disc{margin:16px 0 0;font-size:13.5px;max-width:820px}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}
@media print{.bar,.site-foot{display:none!important}}
.menu a.on{color:var(--brand)}
.wa-float{position:fixed;right:16px;bottom:16px;z-index:30;width:56px;height:56px;border-radius:50%;background:#25d366;display:grid;place-items:center;box-shadow:0 8px 22px rgba(0,0,0,.25);transition:transform .15s}
.wa-float:hover{transform:scale(1.07)}
.wa-float svg{width:32px;height:32px}
@media print{.wa-float{display:none!important}}