.hero.hero--business{min-height:100svh;padding:140px 0 56px;background:var(--bg);text-align:center;overflow:clip}.hero-business-grid{display:block;max-width:880px;margin:0 auto}.hero--business .hero-inner{max-width:880px;margin:0 auto}.hero--business h1{font-size:clamp(40px,6.1vw,88px);line-height:1.08;letter-spacing:-.022em}.hero--business .lead{margin:26px auto 0;max-width:680px;font-size:clamp(17px,1.45vw,21px);line-height:1.78;text-wrap:balance}.hero--business .hero-cta{justify-content:center;margin-top:44px;gap:16px 28px}.hero--business .hero-cta .btn{font-size:16px}.hero--business .hero-link{min-height:48px;padding:8px 0;line-height:1.5}.hero--business .hero-fine{max-width:880px;margin:28px auto 0;padding-top:24px;border-top:1px solid var(--line)}.hero--business .hero-fine .hero-meta,.hero--business .hero-fine .hero-cta-note{font-size:15px;color:var(--text-2)}.hero-commercial{display:grid;grid-template-columns:1fr 1fr;max-width:640px;gap:16px 36px;margin:32px auto 0;padding-top:20px;border-top:1px solid var(--line);text-align:left}.hero-commercial div{min-width:0}.hero-commercial dt{font-size:15px;color:var(--text-2);margin-bottom:5px}.hero-commercial dd{margin:0;font-size:17px;font-weight:500;line-height:1.7}.story-shell{border:1px solid #475467;border-radius:4px;overflow:hidden;background:#101828}.story-top{display:flex;justify-content:space-between;gap:20px;padding:20px 28px;border-bottom:1px solid #344054;color:#cad4e1;font-size:13px}.story-top>span:first-child{font-family:ui-monospace,SFMono-Regular,monospace;letter-spacing:.06em}.story-tabs{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border-bottom:1px solid #344054}.story-tabs button{background:transparent;border:0;border-bottom:2px solid transparent;padding:20px 28px;color:#cad4e1;display:flex;gap:16px;align-items:center;text-align:left;font-size:18px;line-height:1.6;transition:background .2s var(--ease-out),border-color .2s var(--ease-out)}.story-tabs button>span{font:14px ui-monospace,SFMono-Regular,monospace;color:#94a3b8}.story-tabs button[aria-pressed=true]{border-bottom-color:#7ab3ff;background:#1d2939;color:#fff}.story-tabs button:hover{background:#1d2939}.story-shell button:focus-visible,.story-shell a:focus-visible{outline-color:#7ab3ff;outline-offset:-4px}.story-body{display:grid;grid-template-columns:1fr 1fr;gap:72px;padding:32px 36px 28px;align-items:center}.story-label{font-size:13px!important;letter-spacing:.02em;color:#aab8cb!important}.story-ledger{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:28px}.story-ledger span,.story-difference>span{font-size:15px;color:#cad4e1;display:block;margin-bottom:7px}.story-ledger strong{font:500 clamp(18px,2.2vw,26px)/1.3 ui-monospace,SFMono-Regular,monospace;color:#f2f5f9;font-variant-numeric:tabular-nums}.story-difference{padding-top:24px;margin-top:28px;border-top:1px solid #475467}.story-difference strong{font:500 clamp(34px,3.5vw,52px)/1.25 ui-monospace,SFMono-Regular,monospace;color:#7ab3ff;font-variant-numeric:tabular-nums}.story-evidence>[data-story-feedback]{font-size:15px;line-height:1.8;margin-top:20px;min-height:54px}.story-narrative{min-width:0}.story-narrative article{margin-block:0 24px}.story-ready .story-narrative article{margin:0;min-height:230px}.story-narrative h3{font-size:clamp(28px,3vw,40px);line-height:1.45;margin-top:12px;letter-spacing:0!important}.story-narrative article>p:last-child{font-size:16px;line-height:1.85;margin-top:20px}.story-route-panel{padding:0 36px 32px}.story-route{position:relative;display:flex;justify-content:space-between;gap:36px;isolation:isolate}.story-lines{position:absolute;inset:0;z-index:0;width:100%;height:100%;overflow:visible}.story-node{position:relative;z-index:1;display:flex;align-items:center;justify-content:center;min-width:0;padding:16px 20px;border:1px solid #475467;background:#101828;color:#cad4e1;font-size:16px;text-align:center;line-height:1.5;transition:border-color .25s var(--ease-out),color .25s var(--ease-out)}.story-node[data-active=true]{border-color:#7ab3ff;color:#fff}.story-route .chain-edge{fill:none;stroke:#475467;stroke-width:1.25;stroke-linecap:round}.story-route .chain-edge.is-active{stroke:#7ab3ff}.chain-flow-canvas{position:absolute;inset:0;width:100%;height:100%;z-index:0;pointer-events:none;contain:strict}.story-actions{display:flex;flex-wrap:wrap;gap:12px 24px;align-items:center;padding:24px 28px;border-top:1px solid #344054}.story-actions button{min-height:48px;border:1px solid #aab8cb;padding:12px 16px;background:transparent;color:#fff;display:flex;gap:12px;align-items:center;font-size:16px;border-radius:3px}.story-actions [data-story-run]{border-color:#7ab3ff;color:#101828;background:#7ab3ff}.story-actions [data-story-reset]{border:0;color:#cad4e1;padding-inline:0}.story-actions button:disabled{opacity:.5;cursor:default}.story-actions a{font-size:16px;line-height:1.6;color:#a8cfff;min-height:44px;display:flex;gap:8px;align-items:center;margin-left:auto}.story-noscript{padding:20px 28px}@media(min-width:1800px){.hero.hero--business{min-height:100svh}}@media(max-width:1100px){.hero--business .hero-inner{max-width:780px}.hero.hero--business{min-height:0;padding-top:136px}.hero--business .hero-fine{margin-top:32px}.story-body{gap:36px}}@media(max-width:720px){.hero.hero--business{padding:112px 0 40px}.hero--business h1{font-size:clamp(32px,8.2vw,44px);line-height:1.16;letter-spacing:-.012em}.hero--business .lead{font-size:17px}.hero-commercial{gap:16px}.hero-commercial dd{font-size:16px}.hero--business .hero-cta{align-items:stretch}.hero--business .hero-cta .btn{width:auto}.hero--business .hero-fine .hero-cta-note{margin-top:12px}.story-top{padding:16px;flex-wrap:wrap;gap:8px}.story-tabs button{flex-direction:column;gap:5px;padding:16px 8px;font-size:16px}.story-body{grid-template-columns:1fr;gap:28px;padding:24px 20px}.story-ledger{gap:16px;margin-top:24px}.story-ledger strong{font-size:22px}.story-difference strong{font-size:38px}.story-ready .story-narrative article{min-height:0}.story-narrative h3{font-size:30px}.story-route-panel{padding:0 20px 24px}.story-route{gap:24px}.story-node{padding:12px 8px;font-size:14px}.story-actions{padding:20px;gap:12px}.story-actions button{font-size:15px}.story-actions a{width:100%;margin-left:0}}@media(max-width:380px){.hero-commercial{grid-template-columns:1fr}.story-ledger strong{font-size:19px}.story-node{font-size:13px;padding-inline:7px}}@media(prefers-reduced-motion:reduce){.story-tabs button,.story-node{transition:none}}@media print{.hero.hero--business{min-height:0;padding-top:36px}.story-actions,.story-route-panel,.story-tabs{display:none}.story-ready .story-narrative article{display:block!important;min-height:0}.story-shell{break-inside:avoid}}.hero-commercial dd{text-wrap:balance}

/* ==========================================================================
   合作与计价（engagement）
   把原先挂在 hero 末尾的「商务条款 + 细则」下沉为独立一条。
   理由：hero 只承担「这是什么 + 下一步做什么」，条款属于交易信息，放首屏会
   与照片抢注意力，并把首屏内容高度推到 720px（视口 900px），几乎没有呼吸。
   ========================================================================== */
.engagement{padding:var(--section-y-tight) 0}
.engagement .hero-commercial{max-width:880px;margin:0 auto;padding-top:0;border-top:0;gap:20px 56px}
.engagement .hero-commercial dt{font-size:14px}
.engagement .hero-commercial dd{font-size:18px}
.engagement .hero-fine{max-width:880px;margin:28px auto 0;padding-top:24px;border-top:1px solid var(--line);text-align:left}
.engagement .hero-fine .hero-meta,.engagement .hero-fine .hero-cta-note{margin:0;font-size:15px;color:var(--text-2);text-wrap:pretty}
.engagement .hero-fine .hero-cta-note{margin-top:8px}
@media (max-width:720px){
  .engagement{padding:var(--section-y-tight) 0}
  .engagement .hero-commercial{grid-template-columns:1fr;gap:16px}
  .engagement .hero-commercial dd{font-size:16px}
  .engagement .hero-fine{margin-top:24px;padding-top:20px}
}