/* 思想图谱 — dark glass, long scrolls, slow light. */
:root{
  --bg:#05060a; --bg-2:#080a11;
  --ink:#f3f6fc; --muted:#a6b0c4; --dim:#6d7890; --faint:#3c4356;
  --h:200; --s:78%;                         /* per-scholar accent, set inline */
  --h2:26; --s2:88%;
  --acc:hsl(var(--h) var(--s) 66%);
  --acc-soft:hsl(var(--h) var(--s) 66% / .14);
  --acc-line:hsl(var(--h) var(--s) 66% / .34);
  --acc2:hsl(var(--h2) var(--s2) 66%);
  --glass:linear-gradient(158deg, rgba(255,255,255,.058), rgba(255,255,255,.018));
  --glass-line:rgba(255,255,255,.09);
  --shadow:0 40px 90px -50px rgba(0,0,0,.95);
  --sans:"Inter",system-ui,-apple-system,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  --serif:"Songti SC","Source Han Serif SC","Noto Serif CJK SC",Georgia,serif;
  --ease:cubic-bezier(.22,.68,.28,1);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--bg); color:var(--ink); font-family:var(--sans);
  font-size:16px; line-height:1.7; -webkit-font-smoothing:antialiased;
  overflow-x:hidden; min-height:100vh;
}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
::selection{background:hsl(var(--h) var(--s) 66% / .28)}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-thumb{background:#1b2130;border-radius:10px;border:3px solid var(--bg)}
::-webkit-scrollbar-track{background:var(--bg)}

/* ---------- moving light ---------- */
.aurora{position:fixed;inset:0;z-index:0;pointer-events:none;overflow:hidden;background:var(--bg)}
.blob{position:absolute;border-radius:50%;filter:blur(90px);opacity:.5;will-change:transform}
.b1{width:60vw;height:60vw;left:-14vw;top:-22vw;background:hsl(var(--h) 70% 30%);animation:drift1 34s var(--ease) infinite alternate}
.b2{width:48vw;height:48vw;right:-10vw;top:6vh;background:hsl(calc(var(--h) + 42) 62% 26%);animation:drift2 42s var(--ease) infinite alternate}
.b3{width:52vw;height:52vw;left:24vw;bottom:-26vw;background:hsl(var(--h2) 60% 24%);opacity:.34;animation:drift3 50s var(--ease) infinite alternate}
@keyframes drift1{to{transform:translate3d(12vw,10vh,0) scale(1.15)}}
@keyframes drift2{to{transform:translate3d(-14vw,14vh,0) scale(.88)}}
@keyframes drift3{to{transform:translate3d(10vw,-12vh,0) scale(1.2)}}
.grain{position:absolute;inset:-200%;opacity:.035;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='120' height='120' filter='url(%23n)'/%3E%3C/svg%3E");animation:grain 6s steps(6) infinite}
@keyframes grain{0%{transform:translate(0,0)}20%{transform:translate(-3%,2%)}40%{transform:translate(2%,-3%)}60%{transform:translate(-2%,-2%)}80%{transform:translate(3%,1%)}100%{transform:translate(0,0)}}
@media (prefers-reduced-motion:reduce){.blob,.grain{animation:none}html{scroll-behavior:auto}}

/* ---------- chrome ---------- */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:60;height:62px;
  display:flex;align-items:center;gap:16px;padding:0 clamp(16px,4vw,44px);
  background:linear-gradient(180deg,rgba(5,6,10,.82),rgba(5,6,10,0));
  backdrop-filter:blur(10px);
}
.brand{display:flex;align-items:center;gap:9px;font-size:14px;letter-spacing:.24em;color:var(--ink);white-space:nowrap;flex:none}
.brand svg{color:var(--acc)}
.crumb{margin-left:auto;display:flex;align-items:center;gap:12px;font-size:13px;color:var(--muted);min-width:0;white-space:nowrap}
.crumb > *{flex:none}
.crumb > :last-child{flex:0 1 auto;min-width:0;overflow:hidden;text-overflow:ellipsis}   /* a long title gives way, not the brand */
.crumb a:hover{color:var(--acc)}
.crumb .sep{color:var(--faint)}
.view{position:relative;z-index:1}

/* ---------- shared bits ---------- */
.wrap{width:min(1180px,92vw);margin:0 auto}
.narrow{width:min(760px,92vw);margin:0 auto}
.glass{background:var(--glass);border:1px solid var(--glass-line);backdrop-filter:blur(22px) saturate(130%);
  box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.06);border-radius:20px}
.eyebrow{font-size:11.5px;letter-spacing:.34em;text-transform:uppercase;color:var(--acc);opacity:.85}
.sec{padding:clamp(64px,11vh,132px) 0}
.sec-head{display:flex;align-items:baseline;gap:18px;margin-bottom:34px;flex-wrap:wrap}
.sec-head h2{font-size:clamp(22px,3.2vw,34px);font-weight:600;letter-spacing:.01em}
.sec-head p{color:var(--muted);font-size:14.5px;max-width:46ch}
.chip{display:inline-flex;align-items:center;gap:7px;padding:6px 14px;border-radius:99px;font-size:13px;
  border:1px solid var(--glass-line);color:var(--muted);background:rgba(255,255,255,.03);transition:.22s var(--ease)}
.chip:hover{color:var(--ink);border-color:var(--acc-line);background:var(--acc-soft);transform:translateY(-1px)}
.chip.on{color:var(--acc);border-color:var(--acc-line);background:var(--acc-soft)}
.chip .dot{width:7px;height:7px;border-radius:50%;background:currentColor;opacity:.8}

/* reveal on scroll */
.rv{opacity:0;transform:translateY(26px);transition:opacity .9s var(--ease),transform .9s var(--ease)}
.rv.in{opacity:1;transform:none}
.rv.d1{transition-delay:.08s}.rv.d2{transition-delay:.16s}.rv.d3{transition-delay:.24s}
.rv.d4{transition-delay:.32s}.rv.d5{transition-delay:.4s}

/* ---------- home ---------- */
.home-hero{min-height:88vh;display:flex;flex-direction:column;justify-content:center;padding-top:62px}
.home-hero h1{font-size:clamp(40px,8vw,104px);line-height:1.02;font-weight:600;letter-spacing:-.02em}
.home-hero h1 em{font-style:normal;color:var(--acc)}
.home-hero p{margin-top:26px;max-width:48ch;color:var(--muted);font-size:clamp(15px,1.5vw,18px)}
.portals{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:26px;padding-bottom:120px}
.portal{position:relative;overflow:hidden;border-radius:24px;min-height:420px;display:flex;flex-direction:column;
  justify-content:flex-end;padding:34px;isolation:isolate;transition:.5s var(--ease)}
/* each card wears its own scholar's colour, whatever the page behind it is lit with */
.portal{--acc:hsl(var(--h) var(--s) 66%);--acc-line:hsl(var(--h) var(--s) 66% / .34)}
.portal:not(.soon)::before{content:"";position:absolute;inset:0;z-index:-2;
  background:radial-gradient(120% 90% at 18% 0%,hsl(var(--h) 70% 32% / .5),transparent 72%)}
.portal canvas{position:absolute;inset:0;width:100%;height:100%;z-index:-1;opacity:.85}
.portal:hover{transform:translateY(-6px);border-color:var(--acc-line)}
.portal .years{font-size:12px;letter-spacing:.24em;color:var(--muted)}
.portal h3{font-size:clamp(30px,4vw,46px);font-weight:600;margin:6px 0 2px;letter-spacing:-.01em}
.portal .de{font-size:13px;letter-spacing:.2em;text-transform:uppercase;color:var(--muted)}
.portal .th{margin-top:18px;font-family:var(--serif);font-size:17px;line-height:1.6;color:var(--ink);opacity:.92;white-space:pre-line}
.portal .go{margin-top:22px;display:inline-flex;align-items:center;gap:8px;color:var(--acc);font-size:13.5px}
.portal .go svg{transition:.3s var(--ease)}
.portal:hover .go svg{transform:translateX(5px)}
.portal.soon{align-items:center;justify-content:center;border-style:dashed;color:var(--dim);min-height:420px;text-align:center}

/* ---------- scholar hero ---------- */
.s-hero{position:relative;min-height:100vh;display:flex;align-items:center;overflow:hidden}
.s-hero canvas{position:absolute;inset:0;width:100%;height:100%;z-index:0}
/* a pool of shadow under the name, so the drifting words never fight the type */
.s-hero::after{content:"";position:absolute;inset:0;z-index:0;pointer-events:none;
  background:radial-gradient(60% 50% at 24% 58%,rgba(3,4,8,.92),rgba(3,4,8,.55) 45%,transparent 72%)}
.s-hero .inner{position:relative;z-index:1;padding:120px 0 90px}
.s-hero .ko{font-size:13px;letter-spacing:.5em;color:var(--muted);margin-bottom:18px}
.s-hero h1{font-size:clamp(56px,13vw,180px);line-height:.92;font-weight:600;letter-spacing:-.035em;
  background:linear-gradient(175deg,#fff 20%,hsl(var(--h) 60% 72%) 120%);-webkit-background-clip:text;background-clip:text;color:transparent}
.s-hero .de{margin-top:20px;font-size:clamp(12px,1.5vw,16px);letter-spacing:.42em;text-transform:uppercase;color:var(--muted)}
.s-hero .tag{margin-top:clamp(28px,5vh,56px);font-family:var(--serif);font-size:clamp(20px,3.4vw,40px);
  line-height:1.45;max-width:20ch;color:var(--ink);white-space:pre-line}  /* a tagline may carry its own line break */
.s-hero .tag .cursor{display:inline-block;width:2px;height:.95em;background:var(--acc);vertical-align:-.08em;animation:blink 1.1s steps(2) infinite}
@keyframes blink{50%{opacity:0}}
.scroll-cue{position:absolute;left:50%;bottom:34px;transform:translateX(-50%);z-index:2;color:var(--muted);
  font-size:11px;letter-spacing:.3em;display:flex;flex-direction:column;align-items:center;gap:10px}
.scroll-cue i{display:block;width:1px;height:42px;background:linear-gradient(var(--acc),transparent);animation:cue 2.2s var(--ease) infinite}
@keyframes cue{0%{transform:scaleY(0);transform-origin:top}45%{transform:scaleY(1);transform-origin:top}
  55%{transform:scaleY(1);transform-origin:bottom}100%{transform:scaleY(0);transform-origin:bottom}}

.lede{font-family:var(--serif);font-size:clamp(19px,2.4vw,27px);line-height:1.65;color:var(--ink);opacity:.95}
.prose p{color:var(--muted);margin-bottom:1.1em;font-size:15.5px;line-height:1.95}
.prose p:last-child{margin-bottom:0}
.facts{display:flex;gap:28px;flex-wrap:wrap;margin-top:30px;padding-top:26px;border-top:1px solid var(--glass-line)}
.fact b{display:block;font-size:24px;font-weight:600;letter-spacing:-.01em}
.fact span{font-size:12px;color:var(--dim);letter-spacing:.14em}

/* ---------- atlas ---------- */
.atlas-wrap{position:relative;border-radius:24px;overflow:hidden;height:min(78vh,720px);transition:height .5s var(--ease)}
.atlas-wrap.timeline{height:min(56vh,480px)}
.atlas-wrap canvas{position:absolute;inset:0;width:100%;height:100%;display:block;cursor:grab;touch-action:none}
.atlas-wrap canvas.grabbing{cursor:grabbing}
.modes{position:absolute;top:18px;left:18px;z-index:3;display:flex;gap:8px;flex-wrap:wrap}
.legend{position:absolute;bottom:18px;left:18px;z-index:3;display:flex;gap:14px;flex-wrap:wrap;
  font-size:11.5px;color:var(--dim);background:rgba(6,8,13,.6);border:1px solid var(--glass-line);
  border-radius:99px;padding:7px 15px;backdrop-filter:blur(8px)}
.legend b{display:inline-block;width:8px;height:8px;border-radius:50%;margin-right:6px;vertical-align:-1px}
.atlas-hint{position:absolute;right:18px;bottom:18px;z-index:3;font-size:11.5px;color:var(--dim)}

/* ---------- method cards ---------- */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:18px}
.card{padding:26px 24px;border-radius:18px}
.card h4{font-size:16px;font-weight:600;margin-bottom:10px}
.card h4::before{content:"";display:block;width:26px;height:2px;background:var(--acc);margin-bottom:14px;opacity:.8}
.card p{font-size:14px;color:var(--muted);line-height:1.8}

/* ---------- books ---------- */
.paths{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:26px}
.books{display:grid;grid-template-columns:repeat(auto-fill,minmax(286px,1fr));gap:20px}
.book{position:relative;padding:26px 24px 22px;border-radius:18px;overflow:hidden;display:flex;flex-direction:column;
  min-height:220px;transition:.4s var(--ease);transform-style:preserve-3d}
.book::after{content:"";position:absolute;inset:0;border-radius:18px;pointer-events:none;opacity:0;transition:.4s var(--ease);
  background:radial-gradient(420px circle at var(--mx,50%) var(--my,0%),hsl(var(--h) var(--s) 66% / .16),transparent 60%)}
.book:hover::after{opacity:1}
.book:hover{border-color:var(--acc-line);transform:translateY(-5px)}
.book.dim{opacity:.26;filter:saturate(.4)}
.book .yr{font-size:12px;letter-spacing:.2em;color:var(--dim)}
.book h3{font-size:21px;font-weight:600;margin:8px 0 4px;letter-spacing:-.005em}
.book .de{font-size:12px;color:var(--muted);line-height:1.5;font-style:italic;opacity:.85}
.book .th{margin-top:14px;font-family:var(--serif);font-size:15px;line-height:1.65;color:var(--ink);opacity:.9}
.book .tags{margin-top:auto;padding-top:16px;display:flex;gap:6px;flex-wrap:wrap}
.book .tags span{font-size:11px;color:var(--dim);border:1px solid var(--glass-line);border-radius:99px;padding:2px 9px}
.book .nozh{color:var(--acc2);opacity:.8}
.book.minor{min-height:0}
.book.minor h3{font-size:17px}
.book.minor .th{font-size:13.5px}

/* ---------- book page ---------- */
.b-hero{padding:150px 0 20px}
.b-hero .yr{font-size:12.5px;letter-spacing:.3em;color:var(--muted)}
.b-hero h1{font-size:clamp(34px,6.5vw,76px);line-height:1.05;font-weight:600;letter-spacing:-.025em;margin:16px 0 14px}
.b-hero .de{font-size:clamp(13px,1.6vw,16px);color:var(--muted);font-style:italic;line-height:1.5}
.b-hero .thesis{margin-top:clamp(30px,5vh,52px);font-family:var(--serif);font-size:clamp(20px,3.2vw,36px);
  line-height:1.5;max-width:24ch;position:relative;padding-left:26px}
.b-hero .thesis::before{content:"";position:absolute;left:0;top:.2em;bottom:.2em;width:2px;background:linear-gradient(var(--acc),transparent)}

.spine{position:relative;display:grid;gap:18px}
.stage{position:relative;padding:26px 26px 26px 78px;border-radius:18px}
.stage .no{position:absolute;left:26px;top:26px;width:34px;height:34px;border-radius:50%;display:grid;place-items:center;
  font-size:12px;letter-spacing:.1em;border:1px solid var(--acc-line);color:var(--acc);background:var(--acc-soft)}
.stage::before{content:"";position:absolute;left:43px;top:60px;bottom:-18px;width:1px;
  background:linear-gradient(var(--acc-line),transparent);opacity:0;transition:.8s var(--ease) .2s}
.stage.in::before{opacity:1}
.stage:last-child::before{display:none}
.stage h4{font-size:14px;letter-spacing:.22em;color:var(--acc);margin-bottom:10px}
.stage p{color:var(--muted);font-size:15.5px;line-height:1.9}

/* a book as movements: bar width = length of the part, rulings = its chapters */
.parts{padding:42px 30px 26px;border-radius:18px}
.strip{display:flex;gap:4px;height:78px}
.seg{position:relative;min-width:2px;border-radius:5px;transform-origin:bottom;transform:scaleY(.05);opacity:.25;
  transition:transform .9s var(--ease) calc(var(--i)*70ms),opacity .9s var(--ease) calc(var(--i)*70ms),filter .25s;
  --fill:hsl(220 16% 80% / calc(.14 + var(--v)*.34));
  background:repeating-linear-gradient(90deg,rgba(5,6,10,.6) 0 1px,transparent 1px calc(100%/var(--n))),var(--fill)}
.seg.pair1{--fill:hsl(var(--h) var(--s) 66% / calc(.3 + var(--v)*.5))}
.seg.pair2{--fill:hsl(var(--h2) var(--s2) 66% / calc(.3 + var(--v)*.5))}
.seg::before{content:attr(data-no);position:absolute;top:-22px;left:0;font-size:11px;letter-spacing:.1em;color:var(--dim)}
.parts.in .seg{transform:none;opacity:1}
.seg.hot{filter:brightness(1.55)}
.parts.slivers{padding-top:30px}
.parts.bare{padding-top:22px}
.parts.bare .plist{margin-top:0}
.parts.slivers .strip{gap:2px;height:58px}
.plist{list-style:none;display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:4px 18px;margin-top:22px}
.plist li{display:flex;align-items:baseline;gap:10px;padding:8px 10px;border-radius:10px;font-size:14.5px;transition:.2s var(--ease)}
.plist li.hot{background:var(--acc-soft)}
.plist b{font-size:11.5px;font-weight:500;color:var(--acc);min-width:12px}
.plist .m{margin-left:auto;font-size:12px;color:var(--dim);white-space:nowrap}
.pnote{margin-top:16px;padding-top:16px;border-top:1px solid var(--glass-line);font-size:13px;color:var(--muted);line-height:1.8}

.rel{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px}
.rel a{padding:20px 22px;border-radius:16px;display:block;transition:.35s var(--ease)}
.rel a:hover{transform:translateY(-4px);border-color:var(--acc-line)}
.rel .kind{font-size:11.5px;letter-spacing:.2em;color:var(--acc)}
.rel h4{font-size:17px;margin:8px 0 6px;font-weight:600}
.rel p{font-size:13px;color:var(--muted)}

/* ---------- quotes ---------- */
.quotes{display:grid;grid-template-columns:repeat(auto-fit,minmax(310px,1fr));gap:18px}
.quote{padding:28px 30px 24px;border-radius:18px;margin:0;position:relative;overflow:hidden}
.quote::before{content:"„";position:absolute;top:-14px;left:16px;font:600 84px/1 Georgia,serif;
  color:hsl(var(--h) var(--s) 66% / .16)}
.quote blockquote{font-family:var(--serif);font-size:16.5px;line-height:1.62;color:var(--ink);
  font-style:italic;margin:0 0 14px;position:relative}
.quote .zh{font-size:15px;line-height:1.85;color:var(--muted);margin:0 0 16px}
.quote figcaption{font-size:11.5px;letter-spacing:.14em;color:var(--dim);border-top:1px solid var(--glass-line);padding-top:12px}
.src{margin-top:18px;font-size:12px;color:var(--dim);line-height:1.8}

/* ---------- debates & critiques ---------- */
.card .de-i{font-size:12px;font-style:italic;color:var(--dim);font-weight:400;letter-spacing:0}
.card .about{font-size:13px;color:var(--acc);margin:-4px 0 12px;letter-spacing:.02em}
.card .tags{display:flex;gap:7px;flex-wrap:wrap;margin-top:16px}
.tag-btn{font-size:11.5px;border:1px solid var(--glass-line);border-radius:99px;padding:3px 11px;
  color:var(--muted);background:rgba(255,255,255,.025);transition:.2s var(--ease)}
.tag-btn:hover{color:var(--acc);border-color:var(--acc-line);background:var(--acc-soft)}
.cards.crit .card h4::before{background:var(--acc2)}

/* ---------- concept panel ---------- */
.panel{position:fixed;top:0;right:0;bottom:0;width:min(440px,94vw);z-index:70;transform:translateX(102%);
  transition:transform .5s var(--ease);background:linear-gradient(200deg,rgba(14,17,26,.96),rgba(7,9,14,.98));
  border-left:1px solid var(--glass-line);backdrop-filter:blur(26px);overflow-y:auto;padding:70px 34px 40px}
.panel.open{transform:none}
.panel-x{position:absolute;top:22px;right:26px;font-size:26px;line-height:1;color:var(--dim)}
.panel-x:hover{color:var(--ink)}
.panel h3{font-size:27px;font-weight:600;letter-spacing:-.01em}
.panel .de{font-size:12.5px;letter-spacing:.2em;text-transform:uppercase;color:var(--acc);margin-top:8px}
.panel .first{margin-top:14px;font-size:12.5px;color:var(--dim);letter-spacing:.02em}
.panel .list .rk{display:inline-block;font-size:11px;letter-spacing:.1em;color:var(--acc);
  border:1px solid var(--acc-line);border-radius:99px;padding:1px 8px;margin-right:9px;vertical-align:1px}
.panel .gloss{margin-top:22px;font-size:15.5px;line-height:1.95;color:var(--muted)}
.panel .sub{margin-top:30px;padding-top:18px;border-top:1px solid var(--glass-line);
  font-size:11.5px;letter-spacing:.24em;color:var(--dim);margin-bottom:12px}
.panel .list a{display:block;padding:11px 14px;border-radius:12px;font-size:14px;color:var(--ink);
  border:1px solid transparent;transition:.25s var(--ease);margin-bottom:6px;background:rgba(255,255,255,.025)}
.panel .list a:hover{border-color:var(--acc-line);background:var(--acc-soft);transform:translateX(3px)}
.panel .list a small{display:block;color:var(--dim);font-size:12px;margin-top:2px}

/* ---------- notes / footer ---------- */
.notes{font-size:12.5px;color:var(--dim);line-height:1.9;padding:40px 0 80px}
.notes p{margin-bottom:.6em}
.foot{padding:36px 0 60px;border-top:1px solid var(--glass-line);color:var(--dim);font-size:12.5px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}

/* ---------- transitions between views ---------- */
.view.leaving{opacity:0;transform:translateY(-10px);transition:.28s var(--ease)}
.view.entering{animation:enter .6s var(--ease)}
@keyframes enter{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}

@media (max-width:860px){
  .nav{height:56px}
  .crumb > :nth-last-child(n+4){display:none}      /* keep only the parent and the page you are on */
  .parts{padding:38px 18px 20px}
  .s-hero .inner{padding:104px 0 80px}
  .atlas-wrap{height:66vh}
  .legend{display:none}
  .panel{width:100%}
  .stage{padding:22px 20px 22px 62px}
  .stage .no{left:18px;top:22px}
  .stage::before{left:35px}
}