*{box-sizing:border-box;margin:0;padding:0}
:root{--bg:#0A0F1E;--panel:#0F1A30;--panel2:#13213D;--sky:#38BDF8;--gold:#F7C948;--text:#E8EEF9;--mut:#A9BBD6;--line:rgba(255,255,255,.09);--ok:#22C55E;--bad:#F87171}
html{scroll-behavior:smooth}
body{font-family:'Plus Jakarta Sans',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;color:var(--text);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased}
.wrap{max-width:1040px;margin:0 auto;padding:0 20px}
a{color:var(--sky);text-decoration:none}a:hover{text-decoration:underline}
.top{border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:14px;padding-bottom:14px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:17px;color:var(--text)}
.brand:hover{text-decoration:none}
.brand img{width:36px;height:36px;border-radius:9px}
nav a{color:var(--mut);font-weight:600;font-size:14px;margin-left:16px}
nav a:hover,nav a[aria-current]{color:var(--text);text-decoration:none}
.hero{background:radial-gradient(900px 420px at 50% -10%,rgba(56,189,248,.18),transparent);padding:52px 0 56px;text-align:center;border-bottom:1px solid var(--line)}
.kicker{display:inline-block;font-weight:700;font-size:12px;letter-spacing:.13em;text-transform:uppercase;color:var(--sky);background:rgba(56,189,248,.1);border:1px solid rgba(56,189,248,.25);padding:6px 14px;border-radius:30px;margin-bottom:18px}
h1{font-size:clamp(30px,5.6vw,50px);font-weight:800;line-height:1.1;letter-spacing:-.01em}
h1 em{font-style:normal;color:var(--gold)}
.sub{font-size:clamp(16px,2.4vw,19px);color:var(--mut);max-width:680px;margin:16px auto 0}
.cta{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:28px}
.store{display:inline-flex;align-items:center;gap:10px;background:#fff;color:#0A0F1E;font-weight:700;padding:11px 22px;border-radius:13px}
.store:hover{text-decoration:none;transform:translateY(-1px)}
.store small{display:block;font-size:10.5px;font-weight:600;color:#5a6b86;text-transform:uppercase;letter-spacing:.04em}
.store b{font-size:16px;line-height:1.15}
.btn{display:inline-flex;align-items:center;gap:8px;background:var(--gold);color:#0A0F1E;font-weight:800;padding:13px 24px;border-radius:13px}
.btn:hover{text-decoration:none;filter:brightness(1.05)}
.btn.ghost{background:transparent;color:var(--text);border:1.5px solid rgba(255,255,255,.25)}
.note{margin-top:14px;color:#8DA0BE;font-size:14px;font-weight:600}
section.block{padding:52px 0;border-bottom:1px solid var(--line)}
h2{font-size:clamp(23px,3.6vw,31px);font-weight:800;line-height:1.2;margin-bottom:10px}
section.block>.wrap>h2,.center{text-align:center}
.lede{color:var(--mut);max-width:700px;margin:0 auto 32px;text-align:center}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:14px}
.card{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:22px;display:block;color:var(--text)}
a.card:hover{text-decoration:none;border-color:rgba(56,189,248,.45)}
.card h3{font-size:17px;font-weight:800;margin-bottom:6px;color:#fff}
.card p{color:var(--mut);font-size:14.5px}
.card .go{display:inline-block;margin-top:10px;color:var(--sky);font-weight:700;font-size:14px}
.facts{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:12px;margin-top:6px}
.fact{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:18px;text-align:center}
.fact b{display:block;font-size:30px;font-weight:800;color:var(--gold)}
.fact span{color:var(--mut);font-size:14px;font-weight:600}
.chips{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}
.chip{background:rgba(56,189,248,.08);border:1px solid rgba(56,189,248,.22);color:#CFE6F7;font-weight:700;font-size:14px;padding:8px 16px;border-radius:30px}
.qrrow{display:flex;gap:18px;justify-content:center;flex-wrap:wrap;margin-top:30px}
.qr{background:#fff;border-radius:16px;padding:14px 14px 11px;width:168px;text-align:center}
.qr img{width:140px;height:140px;display:block;margin:0 auto}
.qr span{display:block;margin-top:8px;color:#0A0F1E;font-weight:700;font-size:13px}
.qr small{color:#5a6b86;font-weight:600;font-size:11px}
.faq{max-width:780px;margin:0 auto}
.faq details{background:var(--panel);border:1px solid var(--line);border-radius:13px;padding:4px 18px;margin-bottom:10px}
.faq summary{cursor:pointer;font-weight:700;font-size:16px;padding:14px 0;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";float:right;color:var(--sky);font-weight:800}
.faq details[open] summary::after{content:"\2212"}
.faq p{color:var(--mut);font-size:15px;padding:0 0 16px}
.prose{max-width:760px;margin:0 auto}
.prose h2,section.block>.prose>h2{margin:34px 0 10px;text-align:left}
.prose p,.prose li{color:#C9D6EA;font-size:16.5px}
.prose p{margin:0 0 14px}
.prose ol,.prose ul{margin:0 0 16px 22px}
.prose li{margin-bottom:8px}
.prose strong{color:#fff}
.crumbs{font-size:13.5px;color:#8DA0BE;padding-top:18px}
.crumbs a{color:#8DA0BE}
.pagehead{padding:26px 0 30px;border-bottom:1px solid var(--line)}
.pagehead h1{font-size:clamp(28px,4.6vw,42px)}
.pagehead .sub{margin-left:0;text-align:left}
.tips{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:20px 22px;margin:26px 0 8px}
.tips h2{font-size:18px;margin-bottom:8px}
.tips ul{margin-left:20px;color:#C9D6EA}
.tips li{margin-bottom:6px}
/* quiz */
.quiz{max-width:780px;margin:0 auto}
.score{position:sticky;top:0;z-index:5;background:rgba(10,15,30,.94);backdrop-filter:blur(8px);border-bottom:1px solid var(--line);padding:10px 0;margin-bottom:16px;display:flex;justify-content:space-between;align-items:center;font-weight:700;font-size:15px}
.score .bar{flex:1;height:8px;background:var(--panel2);border-radius:8px;margin:0 14px;overflow:hidden}
.score .bar i{display:block;height:100%;width:0;background:var(--sky);transition:width .3s}
.q{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:20px 20px 16px;margin-bottom:14px}
.q h3{font-size:17.5px;font-weight:700;color:#fff;margin-bottom:14px;line-height:1.4}
.q h3 .n{color:var(--sky);margin-right:6px}
.q ol{list-style:none;display:grid;gap:9px}
.q li button{width:100%;text-align:left;font:inherit;font-size:15.5px;color:var(--text);background:var(--panel2);border:1.5px solid transparent;border-radius:12px;padding:11px 14px 11px 46px;cursor:pointer;position:relative;line-height:1.4}
.q li button:hover:not([disabled]){border-color:rgba(56,189,248,.5)}
.q li button .L{position:absolute;left:12px;top:50%;transform:translateY(-50%);width:24px;height:24px;border-radius:50%;border:1.5px solid #4B5E80;font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;color:var(--mut)}
.q li button.right{border-color:var(--ok);background:rgba(34,197,94,.12)}
.q li button.right .L{background:var(--ok);border-color:var(--ok);color:#06210F}
.q li button.wrong{border-color:var(--bad);background:rgba(248,113,113,.12)}
.q li button.wrong .L{background:var(--bad);border-color:var(--bad);color:#2A0606}
.q li button[disabled]{cursor:default}
.q details{margin-top:12px;font-size:14.5px;color:var(--mut)}
.q details summary{cursor:pointer;color:var(--sky);font-weight:600}
.q details p{margin-top:6px;color:#C9D6EA}
.q .res{margin-top:10px;font-weight:700;font-size:14.5px;min-height:1px}
.done{background:linear-gradient(135deg,#13213D,#0F1A30);border:1px solid rgba(56,189,248,.35);border-radius:18px;padding:26px;text-align:center;margin:22px 0}
.done h2{margin-bottom:6px}
.done p{color:var(--mut);margin-bottom:16px}
.more{margin-top:34px}
footer{padding:30px 0 40px;text-align:center;color:#7E90AE;font-size:13.5px}
footer nav{margin-bottom:12px}
footer nav a{margin:0 9px;font-size:13.5px}
footer .disc{max-width:720px;margin:10px auto 0;font-size:12.5px;color:#6B7D9B}
@media (max-width:640px){nav a{margin-left:12px;font-size:13px}.top nav{width:100%;display:flex;justify-content:space-between}.top nav a{margin:0}}