:root{--ink:#0b1220;--ink2:#1e293b;--muted:#526077;--line:#e3e8ef;--bg:#fff;--soft:#f6f8fb;--acc:#0f766e;--acc2:#14b8a6;--accbg:#e6f6f4;--r:14px;
--font:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC","Noto Sans SC",sans-serif}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:76px}
body{margin:0;font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.6;font-size:16px;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
:lang(zh-CN) body,html:lang(zh-CN) body{line-height:1.75}
a{color:var(--acc);text-decoration:none}a:hover{text-decoration:underline}
img,svg{display:block}
:focus-visible{outline:2px solid var(--acc2);outline-offset:2px;border-radius:6px}
.wrap{max-width:1160px;margin:0 auto;padding:0 24px}
.skip{position:absolute;left:-999px;top:8px;background:#fff;padding:8px 12px;z-index:99}.skip:focus{left:8px}
.ic{width:22px;height:22px;flex:none}.ic.sm{width:16px;height:16px}.ic.lg{width:26px;height:26px}
.muted{color:var(--muted)}.small{font-size:14px}
/* nav */
.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.9);backdrop-filter:saturate(180%) blur(10px);border-bottom:1px solid var(--line)}
.nav-in{display:flex;align-items:center;gap:24px;height:64px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:17px;color:var(--ink);letter-spacing:-.01em}.brand:hover{text-decoration:none}
.logo{width:28px;height:28px}
.links{display:flex;gap:4px;margin-left:12px}
.links a{color:var(--muted);font-size:14.5px;padding:6px 10px;border-radius:8px}.links a:hover{color:var(--ink);background:var(--soft);text-decoration:none}
.nav-r{margin-left:auto;display:flex;align-items:center;gap:10px}
.lang{display:flex;align-items:center;gap:6px;color:var(--ink2);font-size:14px;padding:6px 10px;border:1px solid var(--line);border-radius:8px}.lang:hover{text-decoration:none;border-color:#cbd5e1}
.menu{display:none;width:40px;height:40px;border:1px solid var(--line);background:#fff;border-radius:8px;cursor:pointer;flex-direction:column;justify-content:center;align-items:center;gap:5px}
.menu span{display:block;width:16px;height:2px;background:var(--ink);transition:.2s}
/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--ink);color:#fff;padding:12px 20px;border-radius:10px;font-weight:600;font-size:15px;border:1px solid var(--ink);cursor:pointer;font-family:inherit;transition:background .15s,border-color .15s}
.btn:hover{background:var(--ink2);text-decoration:none}
.btn.ghost{background:#fff;color:var(--ink);border-color:var(--line)}.btn.ghost:hover{border-color:#b6c2d1;background:var(--soft)}
.btn.sm{padding:8px 14px;font-size:14px}.btn.full{width:100%}
/* hero */
.hero{padding:84px 0 88px;background:linear-gradient(180deg,#f7fafc 0%,#fff 100%);border-bottom:1px solid var(--line);position:relative;overflow:hidden}
.hero:before{content:"";position:absolute;inset:0;background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);background-size:44px 44px;opacity:.45;mask-image:radial-gradient(ellipse at 70% 40%,#000 0%,transparent 65%);-webkit-mask-image:radial-gradient(ellipse at 70% 40%,#000 0%,transparent 65%)}
.hero-in{position:relative;display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center}
.eyebrow{font-size:13px;letter-spacing:.08em;text-transform:uppercase;color:var(--acc);font-weight:650;margin:0 0 12px}
h1{font-size:clamp(34px,4.6vw,54px);line-height:1.1;letter-spacing:-.025em;margin:0 0 20px;font-weight:750}
html:lang(zh-CN) h1{letter-spacing:0;line-height:1.25;font-size:clamp(30px,4vw,46px)}
.lead{font-size:18.5px;color:var(--muted);margin:0 0 30px;max-width:620px}
.ctas{display:flex;gap:12px;flex-wrap:wrap}
.facts{list-style:none;padding:0;margin:28px 0 0;display:flex;flex-wrap:wrap;gap:10px 22px;color:var(--ink2);font-size:14px}
.facts li{display:flex;align-items:center;gap:7px}.facts .ic{color:var(--acc)}
.panel{margin:0;background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:0 1px 2px rgba(15,23,42,.04),0 20px 50px -20px rgba(15,23,42,.18);overflow:hidden}
.panel-bar{display:flex;align-items:center;gap:6px;padding:12px 16px;border-bottom:1px solid var(--line);background:var(--soft);font-size:13px;color:var(--muted);font-weight:600}
.panel-bar i{width:9px;height:9px;border-radius:50%;background:#d5dce6}.panel-bar span{margin-left:8px}
.flow{list-style:none;margin:0;padding:10px 16px 6px}
.flow li{display:flex;align-items:center;gap:14px;padding:12px 4px;border-bottom:1px dashed var(--line);position:relative}
.flow li:last-child{border-bottom:0}
.flow .dot{width:28px;height:28px;border-radius:8px;background:var(--accbg);color:var(--acc);font-weight:700;font-size:13px;display:grid;place-items:center;flex:none}
.flow div{display:flex;flex-direction:column;line-height:1.35;flex:1}.flow b{font-size:15px}.flow div span{font-size:13.5px;color:var(--muted)}
.flow .ok{color:var(--acc2);width:18px;height:18px}
.panel figcaption{font-size:12.5px;color:var(--muted);padding:10px 16px 14px;border-top:1px solid var(--line);background:#fcfdfe}
/* sections */
.sec{padding:96px 0;border-bottom:1px solid var(--line)}
.sec.alt{background:var(--soft)}
.sec.dark{background:var(--ink);color:#e5ebf3;border-bottom:0}
.sec.dark .eyebrow{color:var(--acc2)}.sec.dark h2{color:#fff}
.sec-head{max-width:720px;margin-bottom:44px}.sec-head.center{text-align:center;margin-inline:auto}
h2{font-size:clamp(28px,3.2vw,38px);line-height:1.2;letter-spacing:-.02em;margin:0 0 12px;font-weight:720}
html:lang(zh-CN) h2{letter-spacing:0}
.sub{color:var(--muted);font-size:17px;margin:0}
.grid{display:grid;gap:20px}.g3{grid-template-columns:repeat(3,1fr)}.g4{grid-template-columns:repeat(4,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:26px}
.card h3{font-size:17.5px;margin:14px 0 8px;letter-spacing:-.01em}.card p{margin:0;color:var(--muted);font-size:15px}
.prob .ic{color:var(--acc);width:24px;height:24px}
.svc{display:flex;flex-direction:column}
.svc-top{display:flex;gap:12px;align-items:flex-start}.svc-top .ic{color:var(--acc);margin-top:2px}.svc-top h3{margin:0}
.svc-d{margin:10px 0 16px!important}
.svc dl{margin:0;flex:1}.svc dt{font-size:12px;text-transform:uppercase;letter-spacing:.07em;color:#7a879a;font-weight:650;margin-top:12px}
.svc dd{margin:4px 0 0;font-size:14.5px;color:var(--ink2)}
.ticks{list-style:none;padding:0;margin:6px 0 0}.ticks li{display:flex;gap:8px;align-items:flex-start;font-size:14.5px;margin:6px 0;color:var(--ink2)}.ticks .ic{color:var(--acc);margin-top:4px}
.time{display:flex;justify-content:space-between;align-items:center;margin:18px 0 0!important;padding-top:14px;border-top:1px solid var(--line);font-size:14px!important}
.time b{color:var(--ink);background:var(--accbg);color:var(--acc);padding:3px 10px;border-radius:999px;font-size:13.5px}
.pkg{border:1px solid var(--line);border-radius:var(--r);padding:26px;display:flex;flex-direction:column;background:#fff}
.pkg.feat{border-color:var(--ink);box-shadow:0 16px 40px -24px rgba(11,18,32,.45)}
.pkg-n{font-size:13px;color:var(--acc);font-weight:700;margin:0}
.pkg h3{margin:6px 0 2px;font-size:19px}.pkg-dur{margin:0 0 12px;color:var(--ink2);font-weight:600;font-size:14px}
.pkg-d{color:var(--muted);font-size:15px;margin:0 0 10px}.pkg .ticks{flex:1}
.price{margin:18px 0 0;padding-top:14px;border-top:1px solid var(--line);font-weight:650;font-size:14px;color:var(--ink2)}
.psteps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(5,1fr);gap:16px}
.pstep{border-top:2px solid var(--acc2);padding:20px 4px 0}
.pnum{font-size:13px;color:var(--acc2);font-weight:700}.pstep h3{color:#fff;margin:6px 0 8px;font-size:18px}
.pstep p{margin:0;color:#aeb9c8;font-size:14.5px}
.pstep .yg{margin-top:14px;color:#e5ebf3;font-size:14px;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.08);border-radius:10px;padding:10px 12px}
.yg span{display:block;font-size:11.5px;text-transform:uppercase;letter-spacing:.08em;color:var(--acc2);font-weight:650;margin-bottom:2px}
.note{display:inline-block;margin:-26px 0 28px;font-size:14px;color:var(--ink2);background:#fff7e6;border:1px solid #f6e0b3;padding:6px 12px;border-radius:8px}
.uc h3{margin-top:0}.uc ul{margin:10px 0 0;padding-left:18px;color:var(--muted);font-size:14.5px}.uc li{margin:6px 0}
.pr{padding:4px 0}.pr .ic{color:var(--acc)}.pr h3{margin:14px 0 6px;font-size:17.5px}.pr p{margin:0;color:var(--muted);font-size:15px}
.founder{display:grid;grid-template-columns:.9fr 1.1fr;gap:56px;align-items:start}
.f-card{background:var(--soft);border:1px solid var(--line);border-radius:var(--r);padding:30px}
.avatar{width:64px;height:64px;border-radius:16px;background:var(--ink);color:#5eead4;display:grid;place-items:center;font-weight:700;font-size:22px;margin-bottom:18px;letter-spacing:.02em}
.f-card h2{font-size:28px;margin-bottom:4px}.f-card .muted{margin:0}
.f-sk{margin:20px 0 8px!important;text-transform:uppercase;letter-spacing:.07em;font-size:12px!important;font-weight:650}
.chips{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:8px}.chips li{background:#fff;border:1px solid var(--line);border-radius:999px;padding:4px 12px;font-size:13.5px;color:var(--ink2)}
.f-bio{font-size:18px;color:var(--ink2);margin:0 0 24px}
.exp{list-style:none;padding:0;margin:0}.exp li{padding:18px 0;border-top:1px solid var(--line)}
.exp-h{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}.exp-h span{color:var(--muted);font-size:14px}
.exp p{margin:6px 0 0;color:var(--muted);font-size:15px}
.faq-wrap{max-width:860px}
.faq details{background:#fff;border:1px solid var(--line);border-radius:12px;margin-bottom:10px}
.faq summary{cursor:pointer;padding:18px 48px 18px 20px;font-weight:620;list-style:none;position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary:after{content:"";position:absolute;right:20px;top:50%;width:9px;height:9px;border-right:2px solid var(--muted);border-bottom:2px solid var(--muted);transform:translateY(-70%) rotate(45deg);transition:.2s}
.faq details[open] summary:after{transform:translateY(-30%) rotate(-135deg)}
.faq details p{margin:0;padding:0 20px 18px;color:var(--muted)}
.contact{display:grid;grid-template-columns:.9fr 1.1fr;gap:56px;align-items:start}
.side{border:1px solid var(--line);border-radius:var(--r);padding:24px;background:var(--soft)}
.side h3{margin:0 0 10px;font-size:16px}.side ul{list-style:none;padding:0;margin:0 0 18px}
.side li{display:flex;justify-content:space-between;gap:12px;padding:9px 0;border-bottom:1px solid var(--line);font-size:14.5px}.side li span{color:var(--muted)}.side li b{font-weight:600;text-align:right}
.form{border:1px solid var(--line);border-radius:16px;padding:28px;background:#fff;box-shadow:0 20px 50px -30px rgba(15,23,42,.25)}
.form label{display:block;font-size:14px;font-weight:600;color:var(--ink2);margin-bottom:16px}
.form input,.form select,.form textarea{display:block;width:100%;margin-top:6px;font:inherit;font-weight:400;font-size:15px;padding:11px 12px;border:1px solid #d3dbe5;border-radius:10px;background:#fff;color:var(--ink)}
.form textarea{resize:vertical;min-height:120px}
.form input:focus,.form select:focus,.form textarea:focus{outline:none;border-color:var(--acc2);box-shadow:0 0 0 3px rgba(20,184,166,.18)}
.form [aria-invalid=true]{border-color:#dc2626}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.err{color:#b91c1c;font-size:14px;margin:-4px 0 12px}
.form .small{margin:12px 0 0}
.done{margin-top:16px;padding:16px;background:var(--accbg);border-radius:10px;font-size:14px}
.done p{margin:0 0 10px}.done pre{white-space:pre-wrap;font:13px/1.5 ui-monospace,SFMono-Regular,Menlo,monospace;background:#fff;border:1px solid var(--line);padding:12px;border-radius:8px;max-height:220px;overflow:auto;margin:0 0 10px}
.foot{padding:44px 0 28px;background:#fff}
.foot-in{display:flex;justify-content:space-between;gap:32px;flex-wrap:wrap}
.foot-in p{max-width:380px;margin:10px 0 0}
.foot-r{display:flex;flex-direction:column;gap:8px;align-items:flex-end}.foot-r a{display:inline-flex;align-items:center;gap:6px}
.rights{margin-top:28px;padding-top:18px;border-top:1px solid var(--line)}
.prose{max-width:780px;padding:64px 24px 80px}.prose h1{font-size:40px}.prose h2{font-size:20px;margin:30px 0 8px}.prose p{color:#334155}
@media (max-width:1080px){.links a{padding:6px 7px;font-size:14px}.g4{grid-template-columns:repeat(2,1fr)}.psteps{grid-template-columns:repeat(3,1fr)}}
@media (max-width:960px){
 .menu{display:flex}
 .links{display:none;position:absolute;top:64px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);flex-direction:column;padding:10px 16px 16px;margin:0;box-shadow:0 20px 30px -20px rgba(15,23,42,.2)}
 .links.open{display:flex}.links a{padding:12px 10px;font-size:16px}
 .hero-in,.founder,.contact{grid-template-columns:1fr;gap:40px}
 .g3{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:640px){
 .wrap{padding:0 18px}.sec{padding:68px 0}.hero{padding:52px 0 60px}
 .g3,.g4,.psteps,.row2{grid-template-columns:1fr}
 .nav-r .btn.sm{display:none}
 .lead{font-size:17px}.ctas .btn{flex:1}
 .foot-r{align-items:flex-start}
 .note{margin-top:-20px}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
h1,h2,h3{text-wrap:balance}
html:lang(zh-CN) h1{font-size:clamp(28px,3.6vw,42px);word-break:keep-all;line-break:strict}
.pstep{display:flex;flex-direction:column}.pstep .yg{margin-top:auto}.pstep>p:not(.yg){margin-bottom:14px}