:root{--ink:#0B1430;--paper:#F4F6F9;--card:#FFFFFF;--line:#D8DEE8;--muted:#5A6478;--seal:#C8231B;--gold:#B8893A;--gold-2:#D9B26A;--ok:#1F7A5C;--fg:var(--ink);--bg:var(--paper);
--f:"Helvetica Neue",Arial,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC",sans-serif;--m:ui-monospace,Menlo,Consolas,"PingFang SC","Microsoft YaHei",monospace}
@media (prefers-color-scheme:dark){:root{--paper:#0A1024;--card:#111A36;--line:#26345E;--muted:#A3AEC6;--fg:#EEF1F8;--bg:#0A1024;--ink:#EEF1F8;color-scheme:dark}}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--fg);font-family:var(--f);font-size:17px;line-height:1.6;margin:0;-webkit-font-smoothing:antialiased}
a{color:inherit}.wrap{max-width:1180px;margin:0 auto;padding-inline:clamp(16px,4vw,40px)}
h1,h2,h3{line-height:1.1;letter-spacing:-.01em;text-wrap:balance;margin:0}
:lang(zh-Hans) h1,:lang(zh-Hans) h2,:lang(zh-Hans) h3{letter-spacing:.02em;line-height:1.3}
.eyebrow{font-family:var(--m);font-size:12.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--seal);margin:0 0 14px}
:focus-visible{outline:3px solid var(--gold-2);outline-offset:3px;border-radius:4px}
.top{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--bg) 92%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;gap:16px;padding-block:12px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none}.seal{width:40px;height:40px;flex:none}
.word{font-weight:800;font-size:14px;letter-spacing:.3em;white-space:nowrap}
.nav{display:flex;gap:22px;margin-left:auto;font-size:15px}.nav a{text-decoration:none;color:var(--muted);font-weight:500}.nav a:hover{color:var(--fg)}
.lang{display:flex;border:1px solid var(--line);border-radius:999px;overflow:hidden;flex:none}
.lang a{text-decoration:none;color:var(--muted);font:600 13px var(--f);padding:7px 12px}.lang a[aria-current]{background:var(--ink);color:var(--bg)}
@media (max-width:860px){.nav{display:none}.lang{margin-left:auto}}@media (max-width:420px){.word{font-size:11px;letter-spacing:.2em}}
.hero .wrap{padding-block:clamp(44px,8vw,96px) clamp(30px,5vw,60px)}
.hero h1{font-size:clamp(34px,5.6vw,68px);font-weight:800;max-width:20ch}.hero h1 em{font-style:normal;color:var(--seal)}
.lead{font-size:clamp(17px,1.6vw,20px);color:var(--muted);max-width:62ch;margin:22px 0 30px}
.doors{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.door{display:flex;flex-direction:column;gap:4px;text-decoration:none;padding:18px 20px;border-radius:14px;border:1.5px solid var(--line);background:var(--card);transition:transform .2s,border-color .2s}
.door b{font-size:17px}.door small{color:var(--muted);font-size:14px}.door.main{background:var(--ink);color:var(--bg);border-color:var(--ink)}.door.main small{color:color-mix(in srgb,var(--bg) 72%,transparent)}
.door:hover{transform:translateY(-2px);border-color:var(--seal)}@media (max-width:820px){.doors{grid-template-columns:1fr}}
.strip{border-block:1px solid var(--line);background:var(--card)}.strip .wrap{display:grid;grid-template-columns:repeat(4,minmax(0,1fr))}
.strip div{padding:20px 18px;border-left:1px solid var(--line)}.strip div:first-child{border-left:0}.strip b{display:block;font-size:17px}.strip small{color:var(--muted);font-size:14px}
@media (max-width:760px){.strip .wrap{grid-template-columns:1fr 1fr}.strip div:nth-child(3){border-left:0}.strip div:nth-child(n+3){border-top:1px solid var(--line)}}
section.blk{padding-block:clamp(52px,8vw,96px)}.blk h2{font-size:clamp(28px,4vw,46px);font-weight:800;max-width:24ch}.blk .sub{color:var(--muted);max-width:66ch;margin:16px 0 0}
.svc{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1px;background:var(--line);border:1px solid var(--line);border-radius:18px;overflow:hidden;margin-top:36px}
.svc article{background:var(--card);padding:26px}.svc .code{font-family:var(--m);font-size:12px;color:var(--seal);letter-spacing:.1em}
.svc h3{font-size:20px;margin:8px 0 10px}.svc p{margin:0;color:var(--muted);font-size:15.5px}.svc a{font-weight:700;font-size:15px;display:inline-block;margin-top:12px}
@media (max-width:900px){.svc{grid-template-columns:1fr 1fr}}@media (max-width:600px){.svc{grid-template-columns:1fr}}
.list{margin:28px 0 0;padding:0;list-style:none;display:grid;gap:12px;max-width:820px}.list li{display:grid;grid-template-columns:24px 1fr;gap:8px}.list li:before{content:"→";color:var(--seal);font-weight:700}
.proc{list-style:none;padding:0;margin:44px 0 0;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;counter-reset:p}
.proc li{position:relative;padding-top:22px;border-top:2px solid var(--fg)}.proc li:before{counter-increment:p;content:"0" counter(p);font-family:var(--m);font-size:13px;color:var(--seal);position:absolute;top:-1px;transform:translateY(-130%)}
.proc b{display:block;font-size:18px;margin-bottom:6px}.proc span{color:var(--muted);font-size:15px}
@media (max-width:860px){.proc{grid-template-columns:1fr 1fr;row-gap:40px}}@media (max-width:480px){.proc{grid-template-columns:1fr}}
.faq{margin-top:28px;display:grid;gap:10px;max-width:900px}.faq details{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:14px 18px}
.faq summary{font-weight:700;cursor:pointer}.faq p{color:var(--muted);margin:10px 0 0}
.contact{background:#0B1430;color:#EEF1F8}.contact .wrap{display:grid;grid-template-columns:1fr 1fr;gap:clamp(28px,5vw,64px)}.contact .sub{color:#B9C2D6}
.chan{display:grid;gap:12px;margin-top:28px}.ch{display:block;padding:14px 16px;border:1px solid #2B3A66;border-radius:12px;text-decoration:none}
.ch small{display:block;font-family:var(--m);font-size:11.5px;letter-spacing:.1em;text-transform:uppercase;opacity:.7}.ch b{font-weight:600;word-break:break-all}
.btn{display:inline-block;background:var(--seal);color:#fff;border-radius:12px;padding:14px 20px;font-weight:700;text-decoration:none;margin-top:20px}
@media (max-width:860px){.contact .wrap{grid-template-columns:1fr}}
footer{padding-block:28px;font-size:13.5px;color:var(--muted)}footer .wrap{display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between}
@media (prefers-reduced-motion:reduce){.door{transition:none}html{scroll-behavior:auto}}