:root{--bg:#faf7f2;--ink:#1f1d1a;--mute:#6b665e;--line:#e7e1d7;--accent:#d8612f;--card:#fff;--night:#16140f}
*{box-sizing:border-box;margin:0;padding:0}
html[data-l=en] .zh,html[data-l=zh] .en{display:none!important}
body{font-family:-apple-system,BlinkMacSystemFont,"Inter","Segoe UI","PingFang SC","Hiragino Sans GB","Noto Sans SC","Microsoft YaHei",Helvetica,Arial,sans-serif;background:var(--bg);color:var(--ink);line-height:1.65;-webkit-font-smoothing:antialiased}
html[data-l=zh] body{line-height:1.85}
a{color:inherit}
.wrap{max-width:1080px;margin:0 auto;padding:0 24px}
.narrow{max-width:720px;margin:0 auto;padding:0 24px}
nav{display:flex;justify-content:space-between;align-items:center;padding:20px 0;gap:12px}
.navr{display:flex;gap:10px;align-items:center}
.logo{font-weight:700;letter-spacing:-.02em;font-size:19px}
.logo span{color:var(--accent)}
.btn{display:inline-block;background:var(--ink);color:#fff;text-decoration:none;padding:12px 22px;border-radius:999px;font-weight:600;font-size:15px;border:0;cursor:pointer;font-family:inherit}
.lang{background:transparent;border:1px solid var(--line);border-radius:999px;padding:8px 14px;font-size:14px;cursor:pointer;font-family:inherit;color:inherit}
header.hero{padding:40px 0 24px;text-align:center}
.eyebrow{color:var(--accent);font-weight:700;font-size:13px;letter-spacing:.1em;text-transform:uppercase}
h1{font-size:clamp(34px,6vw,64px);line-height:1.12;letter-spacing:-.03em;margin:14px auto 18px;max-width:920px}
.lead{font-size:clamp(17px,2vw,20px);color:var(--mute);max-width:640px;margin:0 auto 26px}
.heroimg{width:100%;border-radius:24px;margin-top:36px;display:block}
.caption{font-size:12px;color:var(--mute);margin-top:8px;text-align:center}
section{padding:96px 0}
.chap{font-size:13px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--accent);margin-bottom:10px}
.time{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:15px;color:var(--mute);margin-bottom:6px}
h2{font-size:clamp(28px,4.2vw,44px);letter-spacing:-.02em;line-height:1.2;margin-bottom:22px}
.story p{font-size:clamp(17px,1.9vw,19px);margin-bottom:18px}
.story p.q{font-size:clamp(20px,2.4vw,24px);font-weight:600;line-height:1.45;border-left:3px solid var(--accent);padding-left:18px;margin:30px 0}
.full{width:100%;display:block;border-radius:20px;margin:34px 0 10px}
.dark{background:var(--night);color:#efe8dc}
.dark .mute,.dark .time,.dark .caption{color:#a39b8e}
.mute{color:var(--mute)}
.list{list-style:none;margin:26px 0;display:grid;gap:10px}
.list li{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);border-radius:12px;padding:12px 16px;font-size:16px}
.list li b{color:#f0a57f;font-weight:600}
/* chat */
.chat{background:#fff;border:1px solid var(--line);border-radius:22px;padding:22px;margin:30px 0;display:flex;flex-direction:column;gap:12px}
.b{max-width:82%;padding:11px 15px;border-radius:18px;font-size:16px;line-height:1.5}
.b.me{align-self:flex-end;background:#2f7cf6;color:#fff;border-bottom-right-radius:6px}
.b.ai{align-self:flex-start;background:#efebe4;border-bottom-left-radius:6px}
.b .who{display:block;font-size:12px;opacity:.65;margin-bottom:3px;font-weight:600}
.b.fwd{background:#dde9fd;color:#1b3e7a}
.act{display:inline-block;margin-top:8px;font-size:13px;font-weight:700;background:#fff;border:1px solid var(--line);border-radius:999px;padding:5px 12px;color:var(--accent)}
/* behind the scenes */
.behind{border:1px dashed #c9bfae;border-radius:20px;padding:24px 26px;margin:30px 0;background:#f3eee6}
.behind h3{font-size:14px;letter-spacing:.08em;text-transform:uppercase;color:var(--mute);margin-bottom:14px}
.behind ol{list-style:none;display:grid;gap:10px;counter-reset:s}
.behind li{display:grid;grid-template-columns:70px 1fr;gap:12px;font-size:15px}
.behind li .t{font-family:ui-monospace,Menlo,monospace;color:var(--mute);font-size:14px}
/* both ends */
.ends{display:grid;grid-template-columns:1fr 1.6fr 1fr;border-radius:20px;overflow:hidden;border:1px solid var(--line);margin:34px 0}
.ends>div{padding:22px}
.ends .m{background:#efe9df;color:var(--mute)}
.ends .k{font-size:12px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--accent);margin-bottom:6px}
.ends .m .k{color:#9a9287}
.ends p{font-size:15px}
.split{display:grid;grid-template-columns:1.1fr 1fr;gap:48px;align-items:center}
.split img{width:100%;border-radius:20px;display:block}
.grid3{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:18px;margin-top:36px}
.card{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:24px}
.card h3{font-size:18px;margin-bottom:8px}
.card p{color:var(--mute);font-size:15px}
.card .from{font-size:13px;color:var(--accent);font-weight:600;margin-bottom:8px}
.dark .card{background:#221f1a;border-color:#39342d}
.dark .card p{color:#b3ab9e}
.test{margin-top:36px;border:1px solid #39342d;border-radius:20px;padding:28px;text-align:center;font-size:clamp(19px,2.4vw,26px);font-weight:600;line-height:1.45}
.test small{display:block;font-size:14px;color:#a39b8e;font-weight:400;margin-top:10px}
.no{list-style:none;margin-top:28px;display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:12px}
.no li{background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px 18px;font-size:16px}
.no li::before{content:"✕";color:var(--accent);font-weight:700;margin-right:10px}
.no li span.d{display:block;color:var(--mute);font-size:14px;margin-top:4px;padding-left:24px}
table{width:100%;border-collapse:collapse;margin-top:28px;font-size:15px}
th,td{text-align:left;padding:14px 12px;border-bottom:1px solid #39342d;vertical-align:top}
th{font-size:12px;color:#8f887c;text-transform:uppercase;letter-spacing:.08em}
td:first-child{font-weight:600;width:26%}
.form{display:flex;gap:10px;max-width:480px;margin:28px auto 0;flex-wrap:wrap;justify-content:center}
.form input{flex:1;min-width:220px;padding:13px 18px;border-radius:999px;border:1px solid var(--line);font-size:15px;background:#fff;font-family:inherit}
.center{text-align:center}
.note{font-size:13px;color:var(--mute);margin-top:14px}
footer{padding:40px 0 60px;color:var(--mute);font-size:13px;border-top:1px solid var(--line)}
footer p{margin-bottom:6px}
.toc{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-top:22px}
.toc a{font-size:13px;text-decoration:none;border:1px solid var(--line);border-radius:999px;padding:6px 12px;color:var(--mute);background:#fff}
@media(max-width:820px){.split{grid-template-columns:1fr}.ends{grid-template-columns:1fr}section{padding:68px 0}.b{max-width:92%}}

.scenes{display:flex;gap:6px;flex-wrap:wrap}
.scenes a{font-size:14px;text-decoration:none;padding:7px 13px;border-radius:999px;color:var(--mute)}
.scenes a.on{background:var(--ink);color:#fff}
.dark .scenes a{color:#a39b8e}
.pick{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:20px;margin-top:40px}
.pick a{display:block;text-decoration:none;background:#fff;border:1px solid var(--line);border-radius:22px;overflow:hidden;transition:transform .15s}
.pick a:hover{transform:translateY(-3px)}
.pick img{width:100%;aspect-ratio:3/2;object-fit:cover;display:block}
.pick .t{padding:20px 22px 24px}
.pick h3{font-size:22px;margin-bottom:6px}
.pick p{color:var(--mute);font-size:15px}
.pick .go{margin-top:12px;font-weight:700;color:var(--accent);font-size:14px}
.spec{width:100%;border-collapse:collapse;margin-top:28px;font-size:15px}
.spec th,.spec td{border-bottom:1px solid var(--line);padding:14px 12px;text-align:left;vertical-align:top}
.spec th{font-size:12px;color:var(--mute);text-transform:uppercase;letter-spacing:.08em}
.spec td:first-child{font-weight:600;width:18%}
.code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13.5px;background:#1b1914;color:#e9e1d3;border-radius:16px;padding:20px 22px;overflow-x:auto;line-height:1.6;margin:24px 0;white-space:pre}
.code .c{color:#8a8274}.code .k{color:#f0a57f}.code .s{color:#b5d69a}
.open{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px;margin-top:32px}
.open .card .st{display:inline-block;font-size:12px;font-weight:700;border-radius:999px;padding:3px 10px;margin-bottom:10px;background:#e8f2df;color:#3c6b1f}
.open .card .st.p{background:#fbeadf;color:#a24a1f}
.dark .open .card .st{background:#2d3a24;color:#b5d69a}.dark .open .card .st.p{background:#3a2a20;color:#f0a57f}
.decon{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:14px;margin-top:30px}
.decon>div{background:#fff;border:1px solid var(--line);border-radius:16px;padding:18px}
.decon .a{font-size:13px;color:var(--mute);text-decoration:line-through}
.decon .b{font-size:17px;font-weight:700;margin:4px 0}
.decon p{font-size:14px;color:var(--mute)}