:root{color-scheme:light;--ink:#182c31;--muted:#58696d;--green:#176d57;--line:#dbe4df;--paper:#fafbf8;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC",sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:32px}body{margin:0}a{color:inherit;text-decoration:none}button{font:inherit}img{max-width:100%;object-fit:contain}p{line-height:1.8}a,button,summary{-webkit-tap-highlight-color:transparent}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid #21806b;outline-offset:5px}.wrap{width:min(1160px,calc(100% - 80px));margin-inline:auto}.skip-link{position:absolute;top:-80px;left:20px;padding:12px;background:white;z-index:10}.skip-link:focus{top:10px}.site-header{display:flex;align-items:center;justify-content:space-between;min-height:102px;gap:24px}.brand{display:inline-flex;align-items:center;gap:9px;font-size:21px;font-weight:700;letter-spacing:-.7px;white-space:nowrap}.brand img{flex:none}.site-header nav{display:flex;align-items:center;gap:30px;font-size:13px;font-weight:550}.site-header nav a:hover,.text-link:hover,.site-footer a:hover{color:var(--green)}.nav-download{border:1px solid var(--line);border-radius:9px;padding:11px 15px}.nav-download span{margin-left:12px}
.hero{display:grid;grid-template-columns:1.08fr 1fr;align-items:center;gap:52px;padding-top:48px;padding-bottom:100px}.eyebrow{font-size:12px;letter-spacing:.09em;font-weight:600;color:var(--green);margin:0 0 24px;display:flex;align-items:center;gap:8px}.status-dot{width:7px;height:7px;background:#2c9477;border-radius:50%;display:inline-block;flex:none;box-shadow:0 0 0 4px #2c947711}h1{font-size:clamp(42px,5.2vw,66px);line-height:1.23;letter-spacing:-3px;font-weight:650;margin:0}.accent{color:var(--green)}.hero-description{color:var(--muted);font-size:16px;margin:26px 0 30px}.hero-actions{display:flex;align-items:center;gap:23px}.button{display:inline-flex;align-items:center;justify-content:center;gap:25px;min-height:49px;padding:13px 21px;border-radius:10px;font-size:14px;font-weight:600;transition:background .2s,transform .2s}.primary{background:var(--ink);color:white;box-shadow:0 4px 9px #152e3110}.primary:hover{background:#22654f;transform:translateY(-2px)}.text-link{font-size:13px;font-weight:550}.text-link span{margin-left:7px}.compatibility{font-size:11px;color:var(--muted);margin:15px 0 42px}.compatibility span{margin:0 6px}.provider-strip{display:flex;gap:24px;align-items:center;font-size:12px;font-weight:550;color:#45565a}.provider-strip>span{display:flex;align-items:center;gap:7px}.codex-mark{filter:brightness(0);opacity:.83}.product-stage{background:radial-gradient(ellipse at 8% 40%,#d3e9e2,transparent 72%),radial-gradient(ellipse at 94% 80%,#e2e3f1,transparent 70%),#edf0ec;border:1px solid #e0e6df;border-radius:24px;overflow:hidden;box-shadow:0 16px 48px #24373706}.stage-toolbar{display:flex;align-items:center;justify-content:space-between;background:#ffffff55;border-bottom:1px solid #ffffff70;min-height:43px;padding:0 18px;gap:8px}.stage-caption{font-size:10px;color:#4b615f}.menu-pill{display:flex;align-items:center;gap:6px;font-size:11px;white-space:nowrap}.menu-pill b{font-weight:600}.menu-divider{height:11px;width:1px;background:#899a963c;margin-inline:7px}.preview-area{padding:25px 30px 12px;display:flex;justify-content:center}.app-preview{width:306px;max-width:100%;margin:0;filter:drop-shadow(0 15px 18px #223d4125)}.app-preview picture,.app-preview img{display:block;width:100%;height:auto}.preview-controls{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 20px 18px;font-size:10px;color:#536665}.theme-switch{display:flex;padding:3px;gap:2px;border:1px solid #ffffffb0;background:#ffffff4a;border-radius:9px}.theme-switch button{border:0;border-radius:6px;padding:6px 12px;background:transparent;cursor:pointer;color:#526763;font-size:11px;transition:background .15s}.theme-switch button[aria-pressed=true]{background:white;box-shadow:0 1px 4px #1a3b3310;color:var(--ink)}
.section{padding-block:90px}.features{border-top:1px solid var(--line)}h2{font-size:36px;line-height:1.4;font-weight:600;letter-spacing:-1.3px;margin:0}.section-heading .eyebrow,.setup-intro .eyebrow,.questions .eyebrow{margin-bottom:15px}.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:36px;margin-top:47px}.feature-grid article{border-top:1px solid var(--line);padding-top:24px}.feature-number{font-size:11px;color:var(--green);letter-spacing:.06em}h3{font-size:17px;font-weight:600;letter-spacing:-.3px;margin:17px 0 11px}.feature-grid p{font-size:13px;color:var(--muted);margin:0;min-height:94px}.inline-example{display:flex;align-items:center;gap:8px;min-height:48px;margin-top:17px;font-size:12px}.inline-example strong{font-size:19px;font-weight:550}.inline-example span{font-size:11px;color:var(--muted);margin-left:8px}.feature-detail{display:flex;align-items:center;gap:8px;font-size:11px;min-height:48px;margin-top:17px;color:var(--muted)}.detail-dot{padding:0 3px}.setup-section{background:#eef3ef;border-block:1px solid #e5ebe5;padding-block:75px}.setup-layout{display:grid;grid-template-columns:1fr 1.2fr;gap:90px}.setup-intro>p:last-child{font-size:14px;color:var(--muted);max-width:320px;margin:25px 0 0}.setup-list article{display:flex;gap:18px;padding:24px 0;border-bottom:1px solid #d8e3d9}.setup-list article:first-child{padding-top:0}.setup-list article:last-child{border-bottom:0;padding-bottom:0}.provider-icon{width:48px;height:48px;border:1px solid #dce5dd;border-radius:13px;background:#fafcf9;display:grid;place-items:center;flex:none}.setup-list h3{margin:0 0 7px;font-size:16px;display:flex;align-items:center;gap:12px}.setup-list h3 span{font-size:10px;color:#53675c;font-weight:400;border:1px solid #d6e0d6;padding:2px 6px;border-radius:4px;letter-spacing:0}.setup-list p{margin:0;font-size:13px;color:var(--muted)}.questions{display:grid;grid-template-columns:1fr 1.2fr;gap:90px}.question-list details{border-bottom:1px solid var(--line)}.question-list details:first-child{border-top:1px solid var(--line)}summary{list-style:none;cursor:pointer;font-size:14px;font-weight:550;padding:21px 28px 21px 0;position:relative}summary::-webkit-details-marker{display:none}summary::after{content:'+';font-size:19px;font-weight:400;position:absolute;right:4px;top:16px;color:var(--green)}details[open] summary::after{content:'−'}.question-list details p{font-size:13px;color:var(--muted);margin:0;padding:0 20px 20px 0}
.download-section{padding-block:8px 68px}.download-panel{border:1px solid #d6e4dc;border-radius:24px;background:radial-gradient(ellipse at 15% 100%,#cde4d766,transparent 65%),radial-gradient(ellipse at 100% 0%,#d5dcef60,transparent 65%),#edf3ee;text-align:center;padding:48px 24px 35px}.download-icon{margin-bottom:13px;filter:drop-shadow(0 6px 8px #183d2514)}.download-panel .eyebrow{justify-content:center;margin:0 0 12px;font-size:11px}.download-panel h2{font-size:34px}.download-panel>p:not(.eyebrow){font-size:13px;color:var(--muted);margin:19px 0}.download-action{margin-top:25px}.download-panel .download-note{font-size:11px;margin:14px 0}.release-pending{display:inline-block;background:#dfe8e1;color:#52655b;padding:14px 27px;border-radius:10px;font-size:14px}.download-panel .build-hint{font-size:10px;margin-top:25px;color:#536860}.build-hint code{display:inline-block;background:#ffffff55;padding:3px 8px;border:1px solid #ffffff;border-radius:5px;word-break:break-word}.site-footer{display:flex;align-items:center;gap:24px;padding-block:25px 35px;border-top:1px solid var(--line);color:var(--muted);font-size:11px}.site-footer .brand{font-size:15px;color:var(--ink)}.site-footer p{margin:0;flex:1}.site-footer>div{display:flex;gap:22px}.credits{max-width:800px;padding-block:80px 110px;min-height:75vh}.credits h1{font-size:44px;letter-spacing:-1.5px;margin-bottom:48px}.credits h2{font-size:22px;margin-top:36px}.credits p{font-size:15px;color:var(--muted)}.credits code{overflow-wrap:anywhere;font-size:12px}.credits p a{text-decoration:underline;text-underline-offset:4px;color:var(--green)}
@media(min-width:1440px){.hero{padding-top:75px;padding-bottom:120px}.hero h1{font-size:72px}.product-stage{margin-left:10px}.app-preview{width:322px}}
@media(max-width:1000px){.wrap{width:calc(100% - 48px)}.hero{gap:28px}.hero-actions{gap:14px;flex-wrap:wrap}.hero h1{font-size:48px}.preview-area{padding-inline:22px}.feature-grid{gap:23px}.feature-grid p{min-height:118px}.setup-layout,.questions{gap:45px}.site-header nav{gap:20px}.provider-strip{gap:15px}}
@media(max-width:740px){.wrap{width:calc(100% - 40px)}.site-header{min-height:80px;gap:10px}.site-header nav>a:not(.nav-download){display:none}.site-header .brand{font-size:19px}.nav-download{font-size:11px;padding:9px 11px}.nav-download span{margin-left:4px}.hero{grid-template-columns:1fr;gap:40px;padding-top:36px;padding-bottom:60px}.hero-copy{text-align:center}.hero-copy .eyebrow{justify-content:center;margin-bottom:20px}.hero h1{font-size:clamp(42px,9.4vw,62px);letter-spacing:-2px}.hero-description{font-size:14px;margin-block:22px}.hero-actions{justify-content:center;gap:20px}.compatibility{margin-bottom:27px}.provider-strip{justify-content:center;gap:24px}.product-stage{width:100%;max-width:460px;justify-self:center}.app-preview{width:290px}.preview-area{padding-top:23px}.preview-controls{padding-inline:17px}.section{padding-block:60px}h2{font-size:29px}.feature-grid{grid-template-columns:1fr;gap:24px;margin-top:32px}.feature-grid article{padding-top:22px}.feature-grid p{min-height:0;max-width:520px}.feature-grid h3{margin-top:12px}.inline-example,.feature-detail{margin-top:9px;min-height:36px}.setup-section{padding-block:52px}.setup-layout,.questions{grid-template-columns:1fr;gap:32px}.setup-intro>p:last-child{max-width:500px;margin-top:18px}.setup-list article{gap:14px}.download-section{padding-bottom:44px}.download-panel{padding:35px 18px 25px;border-radius:19px}.download-panel h2{font-size:29px}.site-footer{flex-wrap:wrap;gap:16px;padding-bottom:25px}.site-footer p{flex:none;margin-left:auto}.site-footer>div{width:100%;justify-content:flex-end;gap:20px}.credits{padding-block:45px 70px}.credits h1{font-size:34px;letter-spacing:-1px}.credits p{font-size:14px}}
@media(max-width:370px){.wrap{width:calc(100% - 28px)}.hero h1{font-size:40px}.hero-actions{gap:15px}.hero-actions .button{padding-inline:15px}.text-link{font-size:12px}.provider-strip{gap:16px}.stage-caption{font-size:9px}.desktop-break{display:none}.site-footer p{font-size:10px}.brand{gap:5px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important}}

.download-panel .app-name-note{font-size:11px;margin:8px 0;color:var(--muted)}

.download-heading-line{display:inline-block;position:relative;white-space:nowrap}.download-heading-line .hanging-punctuation{position:absolute;left:100%;width:1em;text-align:left}

.questions{display:block;max-width:760px}.questions>div:first-child{text-align:center}.questions .eyebrow{justify-content:center}.question-list{margin-top:34px}.question-answer{overflow:hidden}.question-list summary::after,.question-list details[open] summary::after{content:'+';transition:transform .22s ease;transform-origin:center}.question-list details[data-expanded="true"] summary::after,.question-list details[open]:not([data-expanded]) summary::after{transform:rotate(45deg)}

/* 中段保持一致的间距，按内容选择列数。 */
.features.section,.questions.section{padding-block:64px}
.features .section-heading{text-align:center;max-width:800px;margin-inline:auto}
.features .section-heading .eyebrow{justify-content:center}
.features .section-heading h2 br{display:none}
.features .feature-grid{margin-top:36px;gap:32px}
.features .feature-grid article{display:flex;flex-direction:column;padding-top:22px}
.features .feature-grid p{min-height:0;font-size:14px}
.features .inline-example,.features .feature-detail{margin-top:auto;padding-top:16px;min-height:44px}
.setup-section{padding-block:64px}
.setup-layout{gap:64px;align-items:start}
.setup-list p{font-size:14px}
.questions .question-list details p{font-size:14px}
@media(max-width:740px){
  .features.section,.questions.section{padding-block:48px}
  .features .section-heading h2 br{display:initial}
  .features .feature-grid{gap:24px;margin-top:28px}
  .features .inline-example,.features .feature-detail{padding-top:10px}
  .setup-section{padding-block:48px}
  .setup-layout{gap:28px}
}