:root{--bg:#0b1020;--card:#111833;--muted:#b5c0e0;--text:#f0f4ff;--accent:#8db0ff;--ok:#20c997;--warn:#f59f00;--danger:#ef4444}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;background:linear-gradient(180deg,#091028, #0b1020 30% 70%, #0a0f1e);color:var(--text);font:16px/1.55 system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif}
.container{max-width:1400px;margin:0 auto;padding:0 24px}
.mono{font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace}
.small{font-size:.9rem}
.hidden{display:none}
.muted{color:var(--muted)}
.site-header{position:sticky;top:0;backdrop-filter:saturate(140%) blur(10px);background:#0b1020cc;border-bottom:1px solid #1b274f;z-index:10}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:56px;position:relative}
.brand{display:flex;gap:10px;align-items:center;font-weight:600;text-decoration:none;color:inherit}
.brand:visited,.brand:active,.brand:focus,.brand:hover{color:inherit;text-decoration:none}
.menu-btn{background:none;border:none;color:var(--text);cursor:pointer;padding:12px;min-width:48px;min-height:48px;display:flex;align-items:center;justify-content:center}
.menu-btn:hover{opacity:0.8}
.nav{position:absolute;top:60px;right:20px;background:var(--card);border:1px solid #2a3972;border-radius:12px;box-shadow:0 4px 20px rgba(0,0,0,0.4);display:none;flex-direction:column;min-width:220px;z-index:100;padding:8px 0}
.nav.open{display:flex}
.nav a{color:var(--muted);text-decoration:none;padding:14px 20px;display:block;font-size:1rem;transition:all 0.15s ease}
.nav a.active,.nav a:hover{color:var(--text);background:rgba(255,255,255,0.05)}
.lang-switch{display:flex;gap:4px;margin:8px 16px}
.lang-btn{background:#182344;color:var(--text);border:1px solid #2a3972;border-radius:8px;padding:6px 10px;font-size:.75rem;cursor:pointer}
.lang-btn:hover{filter:brightness(1.15)}
.hero{padding:64px 0 32px;background:radial-gradient(1200px 400px at 50% -100px,#2a3972aa,transparent)}
.hero h1{margin:0 0 16px;font-size:clamp(1.6rem,3.5vw,2.2rem);line-height:1.2}
.hero .subtitle{max-width:720px;margin:0;color:#dce5ff;line-height:1.6}
main.container{padding-top:32px;padding-bottom:48px}
.grid{display:grid;grid-template-columns:1fr;gap:24px}
@media (min-width:768px){.grid{grid-template-columns:1fr 1fr;gap:24px}}
@media (min-width:1024px){.grid{grid-template-columns:1fr 1fr 1fr;gap:28px}}
.card{background:var(--card);border:1px solid #1b274f;border-radius:16px;padding:28px;margin-bottom:40px;display:flex;flex-direction:column}
.card h2{margin-top:0;margin-bottom:16px}
.card .btn{margin-top:auto}
.card.stretch{grid-column:1 / -1}
.card.callout{display:flex;flex-direction:row;align-items:center;justify-content:space-between;gap:20px;padding:24px 28px}
.bullets{margin:8px 0 0;padding-left:20px}
.bullets li{margin:12px 0;line-height:1.5}
.url-box{background:#0c1430;border:1px solid #1b274f;border-radius:12px;padding:12px;margin:8px 0}
.url-box .label{font-size:.85rem;color:var(--muted)}
.pill-row{margin:10px 0}
.pill{display:inline-block;padding:6px 10px;border-radius:999px;font-weight:600;font-size:.85rem}
.pill.ok{background:#083b2c;color:#b9f3de}
.pill.warn{background:#3d2f07;color:#ffe1a6}
.pill.danger{background:#3d0f12;color:#ffc0c7}
.pill.loading{background:#1e2a4d;color:#b4c3e6;position:relative}
.pill.loading:after{content:'';display:inline-block;width:10px;height:10px;margin-left:6px;border:2px solid #b4c3e6;border-top-color:transparent;border-radius:50%;animation:spin .8s linear infinite;vertical-align:middle}
@keyframes spin{to{transform:rotate(360deg)}}
.checks{list-style:none;padding:0;margin:16px 0}
.checks li{padding:12px 14px;border:1px solid #1b274f;border-radius:10px;margin:10px 0;line-height:1.5}
.checks li.warning{border-color:#5e3100;background:#2a1b06}
.checks li.info{border-color:#1e355e;background:#0d162c}
.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:20px}
.actions.stacked{flex-direction:column;align-items:stretch}
.btn{background:#0d1530;color:var(--text);border:1px solid #2a3972;border-radius:10px;padding:12px 16px;cursor:pointer;font-size:0.95rem;font-weight:600;text-align:center;text-decoration:none;display:inline-block;transition:filter 0.15s ease}
.btn.primary{background:linear-gradient(180deg,#5b79ff,#4a69f5);border-color:#5b79ff;color:white;font-weight:600}
.btn:hover{filter:brightness(1.08)}
.btn.success{outline:2px solid var(--ok)}
.btn.lg{padding:16px 20px;font-size:1rem;font-weight:600}
@media (min-width:700px){.btn.lg{font-size:1.05rem;padding:18px 24px}}
.form{display:grid;gap:16px}
.form label{font-weight:500;margin-bottom:4px}
.row{display:flex;gap:12px;flex-wrap:wrap}
.qr-wrap{display:none;align-items:center;gap:24px;margin-top:24px}
.qr-wrap.show{display:flex}
.site-footer{padding:32px 0;color:var(--muted);margin-top:48px;border-top:1px solid #1b274f}
.manual-input{display:grid;gap:14px;margin-top:12px}
#manual-url{width:100%;padding:14px 16px;border:1px solid #2a3972;border-radius:12px;background:#0c1430;color:var(--text);font-size:1rem}
#manual-url:focus{outline:2px solid #4a69f5}
@media (max-width:480px){#manual-url{font-size:1rem}}