/* 囍博士的实验室：共享编辑设计系统 */
:root{color-scheme:dark;--bg:#091014;--surface:#101a20;--surface-2:#152229;--text:#edf2f3;--muted:#9eabb0;--line:#26353c;--accent:#ffb84d;--accent-2:#65d7c4;--glow:rgba(255,184,77,.14);--shadow:0 22px 70px rgba(0,0,0,.28);--code:#080e11}
[data-theme="light"]{color-scheme:light;--bg:#f5f2eb;--surface:#fffdfa;--surface-2:#ece9e1;--text:#172025;--muted:#5e696c;--line:#d8d4ca;--accent:#9f5700;--accent-2:#087a70;--glow:rgba(193,106,0,.1);--shadow:0 22px 60px rgba(42,38,28,.1);--code:#182126}
*{box-sizing:border-box}html{overflow-x:clip;scroll-behavior:smooth}body{margin:0;overflow-x:clip;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;font-size:clamp(16px,1.3vw,18px);line-height:1.78;transition:background .25s,color .25s}body:before{content:"";position:absolute;inset:0 0 auto;height:720px;pointer-events:none;background:radial-gradient(ellipse 65% 50% at 50% 0%,var(--glow),transparent 72%)}a{color:var(--accent);text-underline-offset:4px}.skip-link{position:fixed;z-index:99;top:8px;left:8px;padding:8px 12px;transform:translateY(-150%);border-radius:8px;background:var(--text);color:var(--bg)}.skip-link:focus{transform:none}
.progress{position:fixed;z-index:30;top:0;left:0;width:100%;height:3px}.progress span{display:block;width:0;height:100%;background:linear-gradient(90deg,var(--accent),var(--accent-2));box-shadow:0 0 12px var(--accent)}
.topbar{position:sticky;z-index:20;top:0;border-bottom:1px solid color-mix(in srgb,var(--line) 72%,transparent);background:color-mix(in srgb,var(--bg) 84%,transparent);backdrop-filter:blur(16px)}.topbar-inner{display:flex;align-items:center;max-width:1120px;margin:auto;padding:12px 18px}.brand{color:var(--text);font-size:clamp(.82rem,2.5vw,.95rem);font-weight:800;letter-spacing:.04em;text-decoration:none;white-space:nowrap}.site-nav{display:flex;gap:4px;margin-left:auto}.site-nav a{padding:7px 9px;border-radius:8px;color:var(--muted);font-size:13px;text-decoration:none}.site-nav a[aria-current="page"],.site-nav a:hover{background:var(--surface);color:var(--text)}.theme{flex:0 0 38px;width:38px;height:38px;margin-left:8px;border:1px solid var(--line);border-radius:50%;background:var(--surface);color:var(--text);cursor:pointer;font-size:16px;transition:transform .2s}.theme:hover{transform:rotate(15deg)}
.home-hero{position:relative;max-width:1040px;margin:auto;padding:clamp(68px,13vw,140px) 20px clamp(56px,9vw,90px)}.home-copy{position:relative;z-index:2}.kicker,.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--accent);font-size:12px;font-weight:750;letter-spacing:.12em;text-transform:uppercase}.kicker:before,.eyebrow:before{content:"";width:7px;height:7px;border-radius:50%;background:var(--accent);box-shadow:0 0 12px var(--accent)}.home-hero h1{max-width:820px;margin:18px 0 22px;font-size:clamp(2.6rem,9vw,6.7rem);line-height:.98;letter-spacing:-.065em}.tagline{max-width:620px;margin:0;color:var(--muted);font-size:clamp(1.06rem,2.1vw,1.35rem);line-height:1.65}.home-mascot{position:relative;isolation:isolate;display:grid;place-items:center;width:min(100%,360px);margin:30px auto 0}.home-mascot:before{content:"";position:absolute;z-index:-1;inset:-8%;border-radius:50%;background:radial-gradient(circle,color-mix(in srgb,var(--accent) 17%,transparent),transparent 68%);filter:blur(14px)}.home-mascot img{display:block;width:100%;height:auto;filter:drop-shadow(0 22px 28px rgba(0,0,0,.32))}
.post-list{position:relative;max-width:1040px;margin:auto;padding:0 20px 80px}.section-heading{display:flex;align-items:end;justify-content:space-between;margin-bottom:24px;padding-bottom:14px;border-bottom:1px solid var(--line)}.section-heading h2{margin:0;font-size:clamp(1.4rem,4vw,2rem)}.section-heading span{color:var(--muted);font-size:13px}.category-filters{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin-bottom:12px}.category-filter{position:relative;min-height:92px;padding:16px;border:1px solid var(--line);border-radius:18px;background:linear-gradient(145deg,var(--surface-2),var(--surface));color:var(--text);text-align:left;cursor:pointer;transition:transform .2s,border-color .2s,background .2s,box-shadow .2s}.category-filter:hover{transform:translateY(-2px);border-color:color-mix(in srgb,var(--accent) 55%,var(--line))}.category-filter:focus-visible{outline:3px solid color-mix(in srgb,var(--accent) 65%,transparent);outline-offset:3px}.category-filter span{display:block;font-size:clamp(1.1rem,3vw,1.55rem);font-weight:800;line-height:1.2;letter-spacing:-.025em}.category-filter small{display:block;margin-top:9px;color:var(--muted);font-size:11px;letter-spacing:.04em}.category-filter.is-active{border-color:color-mix(in srgb,var(--accent) 72%,var(--line));background:linear-gradient(145deg,color-mix(in srgb,var(--accent) 15%,var(--surface-2)),var(--surface));box-shadow:inset 0 0 0 1px color-mix(in srgb,var(--accent) 18%,transparent),0 12px 32px rgba(0,0,0,.12)}.category-filter.is-active:after{content:"";position:absolute;top:15px;right:15px;width:8px;height:8px;border-radius:50%;background:var(--accent);box-shadow:0 0 12px var(--accent)}.filter-status{margin:0 0 24px;color:var(--muted);font-size:12px}.cards{display:grid;gap:16px}.card{position:relative;display:flex;flex-direction:column;min-height:280px;padding:clamp(22px,4vw,32px);overflow:hidden;border:1px solid var(--line);border-radius:22px;background:linear-gradient(145deg,var(--surface-2),var(--surface));box-shadow:0 10px 35px rgba(0,0,0,.1);transition:transform .2s,border-color .2s}.card[hidden]{display:none}.card:hover{transform:translateY(-3px);border-color:color-mix(in srgb,var(--accent) 55%,var(--line))}.card:after{content:"↗";position:absolute;right:24px;top:22px;color:var(--accent);font-size:20px}.card h3{max-width:88%;margin:20px 0 12px;font-size:clamp(1.35rem,3.2vw,1.9rem);line-height:1.3;letter-spacing:-.025em}.card h3 a{color:var(--text);text-decoration:none}.card h3 a:after{content:"";position:absolute;inset:0}.card p{margin:0 0 22px;color:var(--muted);font-size:15px;line-height:1.7}.card-meta{color:var(--muted);font-size:12px;letter-spacing:.03em}.chips{display:flex;flex-wrap:wrap;gap:7px;margin-top:auto}.chip{padding:4px 9px;border:1px solid var(--line);border-radius:999px;color:var(--accent-2);background:color-mix(in srgb,var(--surface) 80%,transparent);font-size:11px;font-weight:650}
.hero{position:relative;max-width:980px;margin:clamp(55px,9vh,95px) auto 0;padding:0 20px 80px;text-align:center}.hero .eyebrow{padding:6px 12px;border:1px solid color-mix(in srgb,var(--accent) 35%,var(--line));border-radius:999px;background:var(--glow)}h1{max-width:900px;margin:25px auto 22px;font-size:clamp(2.35rem,7vw,5rem);line-height:1.08;letter-spacing:-.055em;text-wrap:balance}.dek{max-width:710px;margin:0 auto 24px;color:var(--muted);font-size:clamp(1.05rem,2.1vw,1.32rem);line-height:1.65;text-wrap:balance}.byline{color:var(--muted);font-size:14px}.byline strong{color:var(--text)}.back-link{display:inline-block;margin-bottom:20px;color:var(--muted);font-size:13px;text-decoration:none}.back-link:hover{color:var(--accent)}
main{position:relative}.article{max-width:720px;margin:auto;padding:0 20px}.lead{color:var(--text);font-size:clamp(1.18rem,2.1vw,1.4rem);line-height:1.7}.lead:first-letter{float:left;margin:.1em .12em 0 0;color:var(--accent);font-size:3.9em;font-weight:800;line-height:.75}.article h2,.summary h2{margin:3.7em 0 1em;font-size:clamp(1.7rem,4vw,2.35rem);line-height:1.22;letter-spacing:-.035em;scroll-margin-top:80px}.article h2 .num,.summary h2 .num{display:block;margin-bottom:9px;color:var(--accent);font:700 11px/1 sans-serif;letter-spacing:.2em}.article h3{margin:2.5em 0 .7em;font-size:clamp(1.2rem,2.3vw,1.45rem);line-height:1.35}.article p{margin:0 0 1.45em;color:color-mix(in srgb,var(--text) 92%,var(--muted))}strong{color:var(--text)}blockquote{position:relative;margin:2.5em 0;padding:1.4em 1.5em 1.4em 1.7em;border-left:3px solid var(--accent);border-radius:0 14px 14px 0;background:linear-gradient(100deg,var(--glow),transparent);font-size:clamp(1.08rem,2.3vw,1.35rem);font-weight:620;line-height:1.65}blockquote p{margin:0!important;color:var(--text)!important}code{padding:.12em .35em;border:1px solid var(--line);border-radius:5px;background:var(--surface);font-family:"SFMono-Regular",Consolas,monospace;font-size:.86em}pre{overflow:auto;margin:2em 0;padding:20px;border:1px solid var(--line);border-radius:14px;background:var(--code);color:#d9f4ed;box-shadow:var(--shadow);font:13px/1.7 "SFMono-Regular",Consolas,monospace}pre code{padding:0;border:0;background:none;color:inherit}.comment{color:#79898d}.good{color:#65d7c4}
.stats{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;max-width:960px;margin:0 auto 90px;padding:0 20px}.stat{min-height:140px;padding:20px;border:1px solid var(--line);border-radius:18px;background:linear-gradient(145deg,var(--surface-2),var(--surface))}.value{display:block;margin-bottom:8px;color:var(--accent);font-size:clamp(1.8rem,5vw,3rem);font-weight:800;line-height:1;letter-spacing:-.05em}.stat small{display:block;color:var(--muted);font-size:13px;line-height:1.5}.stat .compare{font-size:clamp(1.45rem,4vw,2.25rem)}.callout{margin:2.4em 0;padding:22px;border:1px solid var(--line);border-radius:18px;background:var(--surface);box-shadow:var(--shadow)}.callout-label{margin-bottom:8px;color:var(--accent);font-size:11px;font-weight:800;letter-spacing:.15em;text-transform:uppercase}.callout p:last-child{margin-bottom:0}.flow{display:flex;align-items:center;gap:7px;margin:2.6em 0;padding:16px;overflow-x:auto;border:1px solid var(--line);border-radius:16px;background:var(--surface)}.flow span{flex:1;min-width:106px;padding:12px 8px;border-radius:10px;background:var(--surface-2);text-align:center;font-size:12px;font-weight:700}.flow i{color:var(--accent);font-style:normal}
.pyramid-wrap{margin:2.8em calc((720px - min(94vw,960px))/2);padding:clamp(18px,4vw,36px);border:1px solid var(--line);border-radius:22px;background:linear-gradient(160deg,var(--surface),color-mix(in srgb,var(--surface) 88%,var(--accent)));box-shadow:var(--shadow)}.pyramid-title{text-align:center;margin:0 0 28px!important;font-size:15px!important;letter-spacing:.06em}.pyramid{display:flex;flex-direction:column;align-items:center;gap:6px}.layer{display:grid;grid-template-columns:1fr auto;align-items:center;min-height:55px;padding:8px 18px;border:1px solid color-mix(in srgb,var(--accent) 35%,var(--line));border-radius:8px;background:linear-gradient(90deg,color-mix(in srgb,var(--accent) 18%,var(--surface-2)),var(--surface-2));font-size:13px}.layer small{color:var(--muted);text-align:right}.l1{width:42%}.l2{width:55%}.l3{width:69%}.l4{width:83%}.l5{width:100%}.pyramid-note{margin:19px 0 0!important;text-align:center;color:var(--muted)!important;font-size:12px}.table-wrap{overflow-x:auto;margin:2.2em 0;border:1px solid var(--line);border-radius:16px}table{width:100%;min-width:600px;border-collapse:collapse;background:var(--surface);font-size:14px}th,td{padding:14px 16px;border-bottom:1px solid var(--line);text-align:left}th{color:var(--accent);background:var(--surface-2);font-size:11px;letter-spacing:.08em;text-transform:uppercase}tr:last-child td{border-bottom:0}td:last-child{color:var(--muted)}
.summary{max-width:820px;margin:100px auto 0;padding:0 20px}.summary-card{padding:clamp(25px,6vw,48px);border:1px solid color-mix(in srgb,var(--accent) 38%,var(--line));border-radius:26px;background:var(--surface);box-shadow:var(--shadow)}.summary h2{margin:0 0 22px}.summary li{margin:.8em 0;color:color-mix(in srgb,var(--text) 90%,var(--muted))}.related{max-width:900px;margin:100px auto 0;padding:0 20px}.related h2{margin:0 0 18px;font-size:clamp(1.4rem,4vw,2rem)}.related-grid{display:grid;gap:12px}.related-card{display:block;padding:20px;border:1px solid var(--line);border-radius:16px;background:var(--surface);color:var(--text);text-decoration:none}.related-card:hover{border-color:var(--accent)}.related-card small{display:block;margin-bottom:6px;color:var(--accent-2)}
.article-source-panel{display:grid;gap:18px;max-width:940px;margin:82px auto 0;padding:clamp(22px,4vw,30px);border:1px solid color-mix(in srgb,var(--accent) 38%,var(--line));border-radius:22px;background:linear-gradient(145deg,color-mix(in srgb,var(--accent) 8%,var(--surface-2)),var(--surface));box-shadow:var(--shadow)}.article-source-label{display:block;margin-bottom:6px;color:var(--accent);font-size:10px;font-weight:800;letter-spacing:.16em;text-transform:uppercase}.article-source-panel h2{margin:0 0 5px;font-size:clamp(1.2rem,3vw,1.5rem);line-height:1.3}.article-source-panel p{margin:0;color:var(--muted);font-size:14px;line-height:1.6}.source-link{display:inline-flex;align-items:center;justify-content:center;align-self:center;justify-self:start;min-height:44px;padding:10px 15px;overflow-wrap:anywhere;border:1px solid color-mix(in srgb,var(--accent) 55%,var(--line));border-radius:999px;background:var(--glow);color:var(--text);font-size:13px;font-weight:750;text-decoration:none}.source-link:hover{border-color:var(--accent);color:var(--accent)}.site-footer{max-width:1040px;margin:60px auto 0;padding:30px 20px 50px;border-top:1px solid var(--line);color:var(--muted);font-size:13px}.footer-inner{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px}
@media(min-width:900px){.home-hero{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(360px,.95fr);align-items:center;gap:clamp(20px,2.4vw,38px);max-width:1240px;padding:clamp(64px,8vh,96px) 28px clamp(54px,7vh,76px)}.home-copy{justify-self:end;width:min(100%,640px)}.home-hero h1{max-width:780px;font-size:clamp(4.7rem,6vw,7.3rem)}.home-mascot{justify-self:start;width:min(100%,440px);margin:0}.hero{max-width:1480px;margin:clamp(32px,4vh,48px) auto 0;padding-bottom:clamp(52px,7vh,68px)}.hero h1{max-width:1240px;margin:18px auto 16px;font-size:clamp(3.1rem,4.8vw,5.4rem);line-height:1.02;letter-spacing:-.05em}.hero .dek{margin-bottom:18px}}
@media(min-width:1200px){.topbar-inner{max-width:1450px}.article{max-width:940px}.summary{max-width:940px}.related{max-width:1040px}.pyramid-wrap{margin-inline:calc((940px - min(94vw,1120px))/2)}}
@media(min-width:700px){.category-filters{grid-template-columns:repeat(4,1fr);gap:12px}.category-filter{min-height:112px;padding:19px}.cards{grid-template-columns:repeat(2,1fr)}.article-source-panel{grid-template-columns:minmax(0,1fr) auto;align-items:center}.related-grid{grid-template-columns:repeat(3,1fr)}.topbar-inner{padding-inline:28px}.article{padding-inline:0}.stats{grid-template-columns:repeat(5,1fr)}.stat{min-height:165px}}
@media(max-width:520px){.brand{max-width:125px;overflow:hidden;text-overflow:ellipsis}.site-nav a{padding-inline:7px}.hero{padding-bottom:62px}.flow{margin-inline:-6px}.pyramid-wrap{margin-left:-4px;margin-right:-4px;padding:17px 10px}.layer{padding-inline:10px}.layer b{font-size:12px}.layer small{font-size:10px}.l1{width:52%}.l2{width:64%}.l3{width:76%}.l4{width:88%}.stats{margin-bottom:70px}.stat{min-height:128px;padding:17px}.summary,.related{margin-top:75px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}