/* Demo App · shell layout（黑白，令牌见 tokens.css；组件类见 components.css） */
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--tj-bg);color:var(--tj-ink);font:15px/1.6 var(--tj-font-body);-webkit-font-smoothing:antialiased}
a{color:inherit}
.tj-wrap{max-width:1080px;margin:0 auto;padding:0 20px}
.sh-head{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 0;border-bottom:1px solid var(--tj-line)}
.sh-brand{display:flex;align-items:center;gap:10px;font-weight:600;text-decoration:none;letter-spacing:-.01em}
.sh-brand img{width:28px;height:28px;border-radius:8px}
.sh-nav{display:flex;align-items:center;gap:6px}
.sh-nav a{padding:8px 12px;border-radius:var(--tj-r3);text-decoration:none;color:var(--tj-ink-2);font-size:14px}
.sh-nav a:hover{background:var(--tj-surface-2);color:var(--tj-ink)}
.sh-hero{padding:96px 0 72px;max-width:760px}
.sh-hero h1{font-size:clamp(34px,5vw,56px);line-height:1.05;letter-spacing:-.03em;margin:0 0 20px;font-weight:600}
.sh-hero p{font-size:18px;color:var(--tj-ink-2);margin:0 0 32px;max-width:560px}
.sh-cta{display:flex;gap:10px;flex-wrap:wrap}
.sh-section{padding:56px 0;border-top:1px solid var(--tj-line)}
.sh-section h2{font-size:22px;letter-spacing:-.02em;margin:0 0 20px;font-weight:600}
.sh-grid{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.sh-step{padding:20px;border:1px solid var(--tj-line);border-radius:var(--tj-r4)}
.sh-step .n{font-family:var(--tj-font-mono);font-size:12px;color:var(--tj-ink-3);margin-bottom:8px}
.sh-faq details{border-top:1px solid var(--tj-line);padding:14px 0}
.sh-faq summary{cursor:pointer;font-weight:500;list-style:none}
.sh-faq summary::-webkit-details-marker{display:none}
.sh-price{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));margin-top:24px}
.sh-plan{border:1px solid var(--tj-line);border-radius:var(--tj-r4);padding:24px;display:flex;flex-direction:column;gap:10px}
.sh-plan .amt{font-size:32px;font-weight:600;letter-spacing:-.02em;font-family:var(--tj-font-mono)}
.sh-plan .per{color:var(--tj-ink-3);font-size:13px}
.sh-plan .tj-btn{margin-top:auto}
.sh-acct{display:grid;gap:24px;grid-template-columns:1fr;margin:32px 0}
.sh-list{border:1px solid var(--tj-line);border-radius:var(--tj-r4);overflow:hidden}
.sh-list .row{display:flex;justify-content:space-between;gap:12px;padding:12px 16px;border-top:1px solid var(--tj-line-soft);font-size:14px}
.sh-list .row:first-child{border-top:0}
.sh-list .row .m{font-family:var(--tj-font-mono);font-size:12px;color:var(--tj-ink-2)}
.sh-muted{color:var(--tj-ink-3)}
@media (max-width:640px){.sh-hero{padding:56px 0 40px}.sh-nav a{padding:8px}}