:root{color-scheme:dark;--bg:#111d17;--ink:#f5f2e9;--muted:#a8b4a7;--accent:#d2ef95;--line:#344338;--surface:#19281f;--button-ink:#162116;font-family:"Microsoft YaHei","PingFang SC",system-ui,sans-serif}
:root[data-theme="light"]{color-scheme:light;--bg:#f5f3e9;--ink:#17281d;--muted:#596659;--accent:#56732c;--line:#cbd2c0;--surface:#e9eddc;--button-ink:#fff}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:25px}body{margin:0;background:var(--bg);color:var(--ink);transition:background .2s,color .2s}a{color:inherit;text-decoration:none}button{font:inherit;cursor:pointer}button,a,summary{-webkit-tap-highlight-color:transparent}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid var(--accent);outline-offset:6px}.shell{max-width:1360px;padding:0 64px;margin:auto}.skip-link{position:fixed;top:-100px;left:20px;z-index:10;background:var(--ink);color:var(--bg);padding:12px}.skip-link:focus{top:15px}.header{display:flex;align-items:center;justify-content:space-between;min-height:116px;border-bottom:1px solid var(--line);gap:24px}.brand{display:flex;align-items:center;gap:13px;font-size:18px;font-weight:700;white-space:nowrap}.brand-mark{font-size:42px;color:var(--accent);line-height:1}.brand small{display:block;font-size:9px;letter-spacing:2px;font-weight:400;margin-top:5px;color:var(--muted)}nav{display:flex;align-items:center;gap:32px;font-size:13px}nav>a:hover{color:var(--accent)}.theme-switch{display:grid;place-items:center;width:42px;height:42px;border:1px solid var(--line);border-radius:50%;background:none;color:var(--ink)}.theme-switch:hover{background:var(--surface)}.theme-switch svg{width:21px;height:21px}.hero{display:grid;grid-template-columns:1.3fr 1fr;position:relative;min-height:710px;align-items:center;padding:84px 0 22px;gap:24px}.hero-copy{z-index:1}.eyebrow{font-size:11px;font-weight:600;letter-spacing:2px;color:var(--muted);margin:0 0 28px;line-height:1.8}.hero .eyebrow{display:flex;align-items:center;gap:10px;letter-spacing:1.6px}.eyebrow>span{width:7px;height:7px;border-radius:50%;background:var(--accent)}h1{font-size:clamp(54px,5.65vw,83px);line-height:1.24;font-weight:650;letter-spacing:-3px;margin:0 0 30px}.accent{color:var(--accent)}.intro{font-size:16px;line-height:2;color:var(--muted);margin:0 0 35px}.hero-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.button{display:inline-flex;align-items:center;justify-content:space-between;gap:22px;padding:17px 21px;border-radius:5px;font-size:13px;border:1px solid transparent;min-height:52px}.primary{background:var(--accent);color:var(--button-ink);font-weight:600}.primary:hover{filter:brightness(1.07)}.secondary{background:transparent;border-color:var(--line);color:var(--ink)}.secondary:hover{background:var(--surface)}.button>span{font-size:19px;line-height:1}.copy-status{min-height:22px;color:var(--accent);font-size:12px;margin:15px 0 0;overflow-wrap:anywhere}.visual{position:relative;aspect-ratio:1;max-width:440px;width:100%;justify-self:end;display:grid;place-items:center;isolation:isolate}.orbit{position:absolute;border:1px solid var(--line);border-radius:50%;width:94%;height:94%}.orbit-two{width:75%;height:75%;transform:rotate(-35deg) scaleX(.62);border-color:var(--muted)}.orbit-three{width:94%;height:94%;transform:rotate(35deg) scaleX(.62)}.seed{font-family:Georgia,serif;font-size:220px;line-height:1;color:var(--accent);transform:rotate(-15deg)}.orbit-dot{position:absolute;width:15px;height:15px;border-radius:50%;background:var(--accent);right:15%;top:10%;box-shadow:0 0 0 9px var(--bg)}.visual-label{position:absolute;bottom:12%;left:0;background:var(--bg);padding:10px;font-size:10px;letter-spacing:2px;line-height:1.8}.visual-corner{position:absolute;right:0;bottom:3%;font-size:9px;text-align:right;line-height:1.9;letter-spacing:1px;color:var(--muted)}.hero-bottom{grid-column:1/-1;width:100%;display:flex;justify-content:space-between;margin-top:72px;padding-top:22px;border-top:1px solid var(--line);color:var(--muted);font-size:11px;letter-spacing:1px}.hero-bottom a{display:flex;gap:24px}.hero-bottom a:hover{color:var(--ink)}.ideas{padding:110px 0;display:grid;grid-template-columns:.9fr 1.2fr;gap:65px;border-bottom:1px solid var(--line)}.section-heading .eyebrow{margin-bottom:20px}h2{font-size:32px;font-weight:500;letter-spacing:-.8px;line-height:1.55;margin:0 0 18px}.section-heading>p:last-child,.about p:last-child{font-size:14px;line-height:2;color:var(--muted)}.idea-list{border-top:1px solid var(--line)}details{border-bottom:1px solid var(--line)}summary{list-style:none;display:flex;align-items:center;gap:24px;padding:25px 0;cursor:pointer}summary::-webkit-details-marker{display:none}.number{font-size:11px;color:var(--muted);font-family:monospace}.idea-title{font-size:21px;font-weight:500}.idea-title small{display:block;font-size:9px;letter-spacing:1.6px;font-weight:400;color:var(--muted);margin-top:8px}.detail-sign{margin-left:auto;width:20px;height:20px;position:relative}.detail-sign:before,.detail-sign:after{content:"";position:absolute;width:12px;height:1px;background:var(--muted);left:4px;top:10px}.detail-sign:after{transform:rotate(90deg)}details[open] .detail-sign:after{transform:none}.idea-body{padding:0 30px 25px 40px}.idea-body p{color:var(--muted);font-size:14px;line-height:1.9;margin:0 0 20px}.tag{display:inline-block;padding:6px 10px;border-radius:3px;background:var(--surface);font-size:10px;color:var(--accent)}.about{padding:84px 0;display:flex;align-items:center;gap:45px}.about-symbol{font-size:100px;font-weight:200;color:var(--accent);align-self:flex-start;line-height:1.1}.about .eyebrow{margin-bottom:15px}.about h2{font-size:29px}.back-top{margin-left:auto;white-space:nowrap;font-size:12px;display:flex;gap:30px;align-self:flex-end;padding-bottom:19px}.back-top:hover{color:var(--accent)}footer{border-top:1px solid var(--line);padding:25px 0 32px;display:flex;justify-content:space-between;align-items:center;gap:20px;color:var(--muted);font-size:10px}footer>span:last-child{display:flex;align-items:center;gap:15px}.footer-dot{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--accent)}
@media(min-width:1600px){.hero{min-height:780px}}
@media(max-width:950px){.shell{padding:0 32px}.hero{min-height:640px}.seed{font-size:170px}.ideas{gap:35px}h2{font-size:26px}.idea-title{font-size:18px}.hero-actions{gap:10px}.button{padding:15px 16px;gap:12px}.about{gap:30px}.about-symbol{font-size:78px}}
@media(max-width:650px){.shell{padding:0 23px}.header{min-height:90px;gap:10px}.brand{font-size:15px;gap:8px}.brand-mark{font-size:34px}.brand small{font-size:7px;letter-spacing:1.5px}nav{gap:17px;font-size:11px}nav a:nth-child(2){display:none}.theme-switch{width:36px;height:36px}.hero{grid-template-columns:1fr;gap:15px;padding-top:58px;min-height:0}.hero .eyebrow{font-size:9px;letter-spacing:1px;margin-bottom:25px}h1{font-size:55px;letter-spacing:-2px;margin-bottom:25px}.intro{font-size:14px;margin-bottom:27px}.button{font-size:12px}.hero-actions{gap:9px}.visual{width:76%;max-width:290px;justify-self:center;margin:16px 0 22px}.seed{font-size:160px}.visual-label{font-size:8px}.visual-corner{font-size:8px}.hero-bottom{margin-top:0;font-size:9px;padding-top:20px}.hero-bottom a{gap:12px}.ideas{grid-template-columns:1fr;padding:65px 0;gap:26px}h2{font-size:28px}.section-heading>p:last-child{font-size:13px}.section-heading .eyebrow{margin-bottom:12px}summary{padding:24px 0}.idea-title{font-size:20px}.about{padding:58px 0;gap:17px;flex-wrap:wrap;align-items:flex-start}.about-symbol{font-size:58px}.about>div{flex:1}.about h2{font-size:23px;letter-spacing:-.6px}.about .eyebrow{font-size:9px;letter-spacing:1px}.about p:last-child{font-size:12px}.back-top{padding:0;margin-left:75px;align-self:auto}footer{font-size:9px;flex-direction:column;align-items:flex-start;gap:12px;padding:24px 0}}
@media(max-width:650px){h1{font-size:clamp(43px,12vw,55px)}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}body{transition:none}}