:root{--bg:#06222a;--bg2:#0a2f38;--ink:#eaf6f4;--mut:#9fc4bd;--cy:#3fd2dc;--sand:#f2c14e;--card:#0d3540;--line:#17505c}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--ink);font-family:"Noto Sans SC","PingFang SC",system-ui,sans-serif;line-height:1.65}
.wrap{max-width:1080px;margin:0 auto;padding:0 22px}
header{position:sticky;top:0;z-index:20;background:rgba(6,34,42,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line);display:flex;align-items:center;gap:18px;padding:12px 22px}
.logo{color:var(--ink);text-decoration:none;font-weight:900;font-size:21px;letter-spacing:.04em}
.logo span{color:var(--cy);font-family:"Space Mono",monospace;font-size:13px;letter-spacing:.18em}
nav{margin-left:auto;display:flex;gap:16px;align-items:center}
nav a{color:var(--mut);text-decoration:none;font-size:15px}
nav a:hover{color:var(--cy)}
#lang-btn{background:var(--card);color:var(--ink);border:1px solid var(--line);border-radius:20px;padding:4px 14px;cursor:pointer;font-family:"Space Mono",monospace}
#hero{position:relative;padding:74px 0 60px;background:radial-gradient(900px 480px at 70% 0%,#0e4250 0%,var(--bg) 60%);overflow:hidden}
#rain{position:absolute;inset:0;width:100%;height:100%;opacity:.5}
.hero-in{position:relative}
.kicker{color:var(--sand);font-family:"Space Mono",monospace;letter-spacing:.22em;font-size:13px;margin-bottom:16px}
h1{font-size:clamp(42px,8.5vw,84px);line-height:1.12;font-weight:900;letter-spacing:.01em}
h1 .hl{color:var(--cy)}
.lede{max-width:640px;color:var(--mut);font-size:18px;margin:22px 0 30px}
.board{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;max-width:760px}
.stat{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:14px 16px}
.stat span{display:block;color:var(--mut);font-size:13px}
.stat b{font-size:24px;font-family:"Space Grotesk","Space Mono",monospace}
.supplybar{height:8px;background:var(--card);border-radius:6px;margin:16px 0 6px;max-width:760px;overflow:hidden}
.hero-note{color:var(--mut);font-size:14px;margin:14px 0 20px}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap}
.btn{display:inline-block;background:var(--cy);color:#04222a;font-weight:700;text-decoration:none;padding:12px 26px;border-radius:30px}
.btn.alt{background:transparent;color:var(--cy);border:2px solid var(--cy)}
.gate{padding:64px 0;border-top:1px solid var(--line)}
.gate h2{font-size:clamp(28px,5vw,44px);font-weight:900;margin-bottom:16px}
.wide{max-width:720px;color:var(--mut);font-size:17px;margin-bottom:16px}
.lanes{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:26px 0}
.lane{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:20px}
.lane h3{color:var(--cy);margin-bottom:8px;font-size:19px}
.lane p{color:var(--mut);font-size:15px}
.promptbox{background:#04161b;border:1px solid var(--line);border-radius:16px;padding:18px;margin:10px 0 26px}
.prompt-head{display:flex;justify-content:space-between;align-items:center;color:var(--sand);font-size:13px;font-family:"Space Mono",monospace;letter-spacing:.08em;margin-bottom:10px}
.prompt-head button{background:var(--cy);border:0;color:#04222a;font-weight:700;border-radius:16px;padding:5px 16px;cursor:pointer}
.promptbox pre{white-space:pre-wrap;color:var(--ink);font-family:"Space Mono",monospace;font-size:13.5px;line-height:1.7}
.facts{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.fact{border-top:2px solid var(--line);padding-top:12px}
.fact span{display:block;color:var(--mut);font-size:13px}
.fact b{font-size:17px}
footer{border-top:1px solid var(--line);padding:34px 0 50px;background:var(--bg2)}
.frow{display:flex;gap:14px;flex-wrap:wrap;align-items:baseline;margin-bottom:8px}
.frow span{color:var(--mut);font-size:14px;min-width:110px}
.frow code{font-family:"Space Mono",monospace;font-size:13.5px;color:var(--cy);word-break:break-all}
.fnote{color:var(--mut);font-size:13.5px;margin-top:16px}
@media(max-width:760px){.board{grid-template-columns:1fr 1fr}.facts{grid-template-columns:1fr 1fr}.lanes{grid-template-columns:1fr}}