:root{--teal:#0d9488;--teal-d:#0f766e;--teal-l:#14b8a6;--teal-x:#2dd4bf;--sky:#38bdf8;
--ink:#111827;--ink2:#374151;--muted:#6b7280;--line:#e5e7eb;--card:#fff;--bg:#f9fafb;--soft:#f3f4f6;
--ok:#0f766e;--warn:#b45309;--max:1080px}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);line-height:1.75;
font-family:system-ui,-apple-system,"Segoe UI",Roboto,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;font-size:15px}
a{color:var(--teal-d);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,h4{margin:0;line-height:1.35;font-weight:700;letter-spacing:-.01em}
p{margin:0}
img{max-width:100%;height:auto}
code,pre,kbd{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace}
code{font-size:.88em;background:var(--soft);border:1px solid var(--line);border-radius:5px;padding:1px 6px;color:var(--ink);word-break:break-all}
pre{background:#0f172a;color:#e2e8f0;border-radius:10px;padding:14px 16px;overflow-x:auto;font-size:13px;line-height:1.7;margin:10px 0}
pre code{background:none;border:0;padding:0;color:inherit;font-size:inherit}

.wrap{max-width:var(--max);margin:0 auto;padding:0 20px}
.skip{position:absolute;left:-9999px}

/* header */
.hdr{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.hdr-in{max-width:var(--max);margin:0 auto;padding:0 20px;height:62px;display:flex;align-items:center;gap:18px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--ink);text-decoration:none;flex:0 0 auto}
.brand:hover{text-decoration:none}
.mark{width:34px;height:34px;border-radius:9px;background:linear-gradient(135deg,var(--teal-x),var(--teal-l) 50%,var(--sky));color:#fff;
display:flex;align-items:center;justify-content:center;font-size:17px;font-weight:800;line-height:1;flex:0 0 auto}
.brand b{font-size:16px;letter-spacing:.01em}
.brand span{display:block;font-size:11px;font-weight:400;color:var(--muted);line-height:1.3;margin-top:-2px}
.nav{display:flex;gap:4px;margin-left:8px;flex-wrap:wrap}
.nav a{color:var(--ink2);font-size:14px;padding:7px 11px;border-radius:8px}
.nav a:hover{background:var(--soft);text-decoration:none;color:var(--ink)}
.nav a[aria-current=page]{color:var(--teal-d);background:rgba(20,184,166,.1);font-weight:600}
.acts{margin-left:auto;display:flex;gap:9px;align-items:center;flex:0 0 auto}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;height:40px;padding:0 17px;border-radius:9px;font-size:14px;
font-weight:600;border:1px solid var(--line);background:var(--card);color:var(--ink);cursor:pointer;white-space:nowrap}
.btn:hover{background:var(--soft);text-decoration:none;color:var(--ink)}
.btn.pri{border-color:transparent;color:#fff;background:linear-gradient(135deg,var(--teal-l),var(--teal-d))}
.btn.pri:hover{background:linear-gradient(135deg,var(--teal-d),#115e59);color:#fff}
.btn.sm{height:34px;padding:0 13px;font-size:13px}
.btn.lg{height:48px;padding:0 24px;font-size:15px}
.btn.block{width:100%}

/* hero */
.hero{background:var(--card);border-bottom:1px solid var(--line);padding:54px 0 46px}
.hero h1{font-size:34px;letter-spacing:-.02em;max-width:720px}
.hero .lede{font-size:16px;color:var(--ink2);max-width:660px;margin-top:14px}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}
.chip{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:600;padding:6px 12px;border-radius:999px;
background:var(--soft);border:1px solid var(--line);color:var(--ink2)}
.chip i{width:6px;height:6px;border-radius:50%;background:var(--teal-l);display:inline-block;flex:0 0 auto}
.cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-note{font-size:13px;color:var(--muted);margin-top:14px}

section{padding:42px 0}
section+section{border-top:1px solid var(--line)}
h2.sec{font-size:23px;margin-bottom:8px}
p.sub{color:var(--muted);font-size:14px;margin-bottom:22px;max-width:760px}
h3{font-size:16.5px;margin-bottom:8px}

.grid{display:grid;gap:14px}
.g2{grid-template-columns:repeat(2,minmax(0,1fr))}
.g3{grid-template-columns:repeat(3,minmax(0,1fr))}
.g4{grid-template-columns:repeat(4,minmax(0,1fr))}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:20px}
.card h3{display:flex;align-items:center;gap:9px;font-size:15px}
.card p{font-size:13.5px;color:var(--muted);margin-top:7px}
.dot{width:24px;height:24px;border-radius:8px;background:rgba(20,184,166,.13);color:var(--teal-d);
display:inline-flex;align-items:center;justify-content:center;font-size:12px;font-weight:800;flex:0 0 auto}

/* steps */
.steps{display:grid;gap:12px;counter-reset:s}
.step{display:flex;gap:14px;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:16px 18px}
.step .n{flex:0 0 auto;width:26px;height:26px;border-radius:50%;background:rgba(20,184,166,.13);color:var(--teal-d);
font-size:13px;font-weight:700;display:inline-flex;align-items:center;justify-content:center;margin-top:2px}
.step b{display:block;font-size:14.5px}
.step p{font-size:13.5px;color:var(--muted);margin-top:3px}

/* console strip (注册引导) */
.strip{background:linear-gradient(135deg,#0f766e,#115e59);border-radius:16px;padding:28px 30px;color:#fff;
display:flex;flex-wrap:wrap;gap:22px;align-items:center;justify-content:space-between}
.strip h2{font-size:21px;color:#fff}
.strip p{color:rgba(255,255,255,.86);font-size:14px;margin-top:8px;max-width:560px}
.strip .btn{background:#fff;color:var(--teal-d);border-color:transparent;font-weight:700}
.strip .btn.ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.5)}
.strip .btn.ghost:hover{background:rgba(255,255,255,.12);color:#fff}
.strip .btn:hover{color:var(--teal-d)}

/* kv */
.kv{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;background:var(--soft);
border:1px solid var(--line);border-radius:11px;padding:13px 16px;margin-bottom:14px}
.kv .k{font-size:12.5px;font-weight:600;color:var(--muted);letter-spacing:.04em}
.kv code{font-size:14px;font-weight:600;color:var(--teal-d);background:transparent;border:0;padding:0}

/* table */
.tbl-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;border:1px solid var(--line);border-radius:12px;background:var(--card)}
table{width:100%;border-collapse:collapse;font-size:13.5px;min-width:560px}
th{text-align:left;font-size:11.5px;font-weight:700;letter-spacing:.05em;color:var(--muted);padding:12px 16px;border-bottom:1px solid var(--line);white-space:nowrap}
td{padding:12px 16px;border-bottom:1px solid var(--line);color:var(--ink2);vertical-align:top}
tr:last-child td{border-bottom:0}
td:first-child{color:var(--ink);font-weight:600}
td code{font-size:12.5px}

/* faq */
.faq{display:grid;gap:10px}
details{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:0;overflow:hidden}
details[open]{border-color:rgba(20,184,166,.5)}
summary{padding:15px 18px;font-size:14.5px;font-weight:600;cursor:pointer;list-style:none;display:flex;gap:11px;align-items:flex-start}
summary::-webkit-details-marker{display:none}
summary::before{content:"Q";flex:0 0 auto;width:21px;height:21px;border-radius:6px;background:rgba(20,184,166,.14);color:var(--teal-d);
font-size:11px;font-weight:800;display:inline-flex;align-items:center;justify-content:center;margin-top:3px}
details .a{padding:0 18px 16px 50px;font-size:14px;color:var(--ink2)}
details .a p+p{margin-top:9px}

/* clients */
.cl{border:1px solid var(--line);border-radius:12px;background:var(--card);padding:18px}
.cl h3{font-size:15px;display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.tag{font-size:11px;font-weight:600;padding:2px 8px;border-radius:999px;background:rgba(20,184,166,.12);color:var(--teal-d);border:1px solid rgba(20,184,166,.25)}
.tag.gray{background:var(--soft);color:var(--muted);border-color:var(--line)}
.cl ol{margin:10px 0 0;padding-left:20px;font-size:13.5px;color:var(--ink2)}
.cl li{margin-bottom:5px}
.cl pre{margin-top:10px}

.note{background:rgba(20,184,166,.07);border:1px solid rgba(20,184,166,.25);border-radius:11px;padding:14px 16px;font-size:13.5px;color:var(--ink2)}
.note b{color:var(--teal-d)}

/* footer */
footer{background:var(--card);border-top:1px solid var(--line);margin-top:20px;padding:36px 0 30px;font-size:13.5px}
.f-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:24px}
footer h4{font-size:13px;color:var(--ink);margin-bottom:10px;font-weight:700}
footer ul{list-style:none;margin:0;padding:0}
footer li{margin-bottom:6px}
footer a{color:var(--muted)}
footer a:hover{color:var(--teal-d)}
.f-bot{border-top:1px solid var(--line);margin-top:26px;padding-top:18px;color:var(--muted);font-size:12.5px;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between}

@media(max-width:900px){
.g4{grid-template-columns:repeat(2,minmax(0,1fr))}
.f-grid{grid-template-columns:1fr 1fr}
.nav{display:none}
}
@media(max-width:620px){
.g2,.g3,.g4{grid-template-columns:1fr}
.hero{padding:36px 0 32px}
.hero h1{font-size:26px}
h2.sec{font-size:20px}
section{padding:32px 0}
.strip{padding:22px}
.f-grid{grid-template-columns:1fr}
.brand span{display:none}
details .a{padding-left:18px}
}