:root{--bg:#f7f8fb;--surface:#fff;--ink:#12172a;--muted:#5a6280;--line:#e3e7f0;--brand:#2f5bea;--brand-dark:#1e40c4;--accent:#0fb5a0;--radius:14px;--wrap:1080px}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;-webkit-font-smoothing:antialiased}
img{max-width:100%}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 20px}
h1,h2,h3{line-height:1.2;margin:0 0 .5em;letter-spacing:-.02em}
h1{font-size:clamp(30px,5vw,46px)}
h2{font-size:clamp(24px,3.4vw,32px)}
h3{font-size:18px}
p{margin:0 0 1em}
header{position:sticky;top:0;z-index:20;background:rgba(247,248,251,.9);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;gap:24px;height:64px}
.logo{font-weight:700;font-size:20px;letter-spacing:-.03em;color:var(--ink)}
.logo span{color:var(--brand)}
.nav nav{margin-left:auto;display:flex;gap:22px;align-items:center}
.nav nav a{color:var(--muted);font-size:15px}
.nav nav a:hover{color:var(--ink);text-decoration:none}
.btn{display:inline-block;background:var(--brand);color:#fff;padding:11px 20px;border-radius:10px;font-weight:600;font-size:15px;border:0;cursor:pointer;transition:background .15s}
.btn:hover{background:var(--brand-dark);text-decoration:none;color:#fff}
.btn.ghost{background:transparent;color:var(--brand);border:1px solid var(--line)}
.btn.ghost:hover{background:#fff;color:var(--brand-dark)}
@media(max-width:760px){.nav nav a.hide-sm{display:none}}
.hero{padding:72px 0 56px}
.hero .lead{font-size:19px;color:var(--muted);max-width:640px}
.cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}
.trust{display:flex;gap:28px;flex-wrap:wrap;margin-top:40px;padding-top:28px;border-top:1px solid var(--line)}
.trust div{min-width:130px}
.trust b{display:block;font-size:26px;letter-spacing:-.02em}
.trust span{font-size:14px;color:var(--muted)}
section{padding:56px 0}
.section-head{max-width:680px;margin-bottom:34px}
.section-head p{color:var(--muted);margin:0}
.grid{display:grid;gap:18px;grid-template-columns:repeat(auto-fit,minmax(250px,1fr))}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.card h3{margin-bottom:8px}
.card p{color:var(--muted);margin:0;font-size:15px}
.card .tag{display:inline-block;font-size:13px;color:var(--accent);font-weight:600;margin-bottom:10px;letter-spacing:.02em}
.alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
ol.steps{counter-reset:s;list-style:none;padding:0;margin:0;display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}
ol.steps li{counter-increment:s;padding:22px 20px 20px;background:var(--bg);border:1px solid var(--line);border-radius:var(--radius)}
ol.steps li::before{content:counter(s);display:flex;align-items:center;justify-content:center;width:30px;height:30px;border-radius:50%;background:var(--brand);color:#fff;font-weight:700;font-size:14px;margin-bottom:12px}
ol.steps b{display:block;margin-bottom:4px}
ol.steps span{color:var(--muted);font-size:15px}
.pledge{background:var(--surface);border:1px solid var(--line);border-left:4px solid var(--accent);border-radius:var(--radius);padding:26px 28px}
.pledge h3{margin-bottom:10px}
.pledge ul{margin:0;padding-left:20px;color:var(--muted)}
.pledge li{margin-bottom:6px}
details{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:16px 18px;margin-bottom:10px}
details summary{cursor:pointer;font-weight:600;list-style:none}
details summary::-webkit-details-marker{display:none}
details summary::after{content:"+";float:right;color:var(--muted);font-weight:400}
details[open] summary::after{content:"\2013"}
details p{margin:12px 0 0;color:var(--muted);font-size:15px}
.contact-box{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:30px;display:grid;gap:26px;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));align-items:start}
.contact-box dt{font-size:13px;color:var(--muted);margin-bottom:2px}
.contact-box dd{margin:0 0 16px;font-size:17px;font-weight:600}
.note{font-size:14px;color:var(--muted)}
footer{padding:30px 0;border-top:1px solid var(--line);color:var(--muted);font-size:14px}
.footer-row{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}
/* language gate */
.gate{min-height:100vh;display:flex;flex-direction:column}
.gate-head{padding:38px 0 0;text-align:center}
.gate-logo{font-weight:700;font-size:22px;letter-spacing:-.03em}
.gate-logo span{color:var(--brand)}
.gate-tag{color:var(--muted);margin-top:6px;font-size:15px}
.gate-main{flex:1;display:flex;align-items:center;justify-content:center;padding:40px 20px}
.gate-card{background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:44px 36px;max-width:520px;width:100%;text-align:center;box-shadow:0 1px 2px rgba(18,23,42,.04),0 12px 32px rgba(18,23,42,.06)}
.gate-card h1{font-size:clamp(26px,4vw,34px);margin-bottom:6px}
.gate-card .sub{color:var(--muted);margin-bottom:28px}
.lang-list{display:grid;gap:12px}
.lang{display:flex;align-items:center;gap:14px;padding:16px 18px;border:1px solid var(--line);border-radius:12px;background:var(--bg);color:var(--ink);text-align:left;transition:border-color .15s,transform .15s,background .15s}
.lang:hover{text-decoration:none;border-color:var(--brand);background:#fff;transform:translateY(-1px)}
.lang .flag{font-size:26px;line-height:1}
.lang b{display:block;font-size:17px}
.lang small{color:var(--muted)}
.lang .arrow{margin-left:auto;color:var(--muted);font-size:20px}
.gate-foot{padding:24px 0 30px;text-align:center;color:var(--muted);font-size:13px}
.lang.off{opacity:.55;cursor:default;background:var(--bg)}
.lang.off:hover{border-color:var(--line);background:var(--bg);transform:none}