/* ============ tokens ============ */
:root{
  --bg:#0a0e14; --bg2:#0d1420;
  --glass:rgba(255,255,255,.045); --glass2:rgba(255,255,255,.07);
  --line:rgba(255,255,255,.09); --line2:rgba(255,255,255,.16);
  --ink:#eef3f6; --sub:#9db0ba; --dim:#6b808c;
  --acc:#4C6FFF; --acc-dim:rgba(76,111,255,.14); --acc-line:rgba(76,111,255,.35);
  --acc2:#7B96FF; --warn:#fbbf24; --neg:#fb7185; --pos:#4ade80;
  --nav-w:236px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"Noto Sans SC","Microsoft YaHei","PingFang SC",system-ui,sans-serif;background:var(--bg);color:var(--ink);
  font-size:15px;line-height:1.75;letter-spacing:.01em;-webkit-font-smoothing:antialiased;overflow-x:hidden}
::selection{background:var(--acc);color:#101B4A}
::-webkit-scrollbar{width:9px;height:9px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:rgba(255,255,255,.12);border-radius:99px;border:2px solid transparent;background-clip:content-box}
::-webkit-scrollbar-thumb:hover{background:rgba(76,111,255,.45);border:2px solid transparent;background-clip:content-box}

/* ============ reading progress ============ */
#readbar{position:fixed;top:0;left:0;height:2.5px;width:0;z-index:100;
  background:linear-gradient(90deg,var(--acc2),var(--acc));box-shadow:0 0 8px rgba(76,111,255,.6);
  transition:width .08s linear}

/* ============ ambient background ============ */
.bg-fx{position:fixed;inset:0;z-index:-2;background:
  radial-gradient(1100px 600px at 85% -10%,rgba(76,111,255,.08),transparent 60%),
  radial-gradient(900px 550px at -10% 100%,rgba(125,211,252,.06),transparent 60%),var(--bg)}
.orb{position:fixed;border-radius:50%;filter:blur(95px);z-index:-1;pointer-events:none;opacity:.55;will-change:transform}
.orb1{width:520px;height:520px;background:radial-gradient(circle,rgba(76,111,255,.20),transparent 65%);top:-140px;left:-120px;animation:drift1 22s ease-in-out infinite alternate}
.orb2{width:460px;height:460px;background:radial-gradient(circle,rgba(96,125,255,.15),transparent 65%);bottom:-160px;right:-120px;animation:drift2 26s ease-in-out infinite alternate}
@keyframes drift1{from{transform:translate(0,0) scale(1)}to{transform:translate(70px,60px) scale(1.15)}}
@keyframes drift2{from{transform:translate(0,0) scale(1)}to{transform:translate(-60px,-50px) scale(1.1)}}
.grid-fx{position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:.5;
  background-image:linear-gradient(rgba(255,255,255,.028) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.028) 1px,transparent 1px);
  background-size:44px 44px;
  -webkit-mask-image:radial-gradient(ellipse 90% 70% at 50% 0%,#000 30%,transparent 80%);
          mask-image:radial-gradient(ellipse 90% 70% at 50% 0%,#000 30%,transparent 80%)}
.noise{position:fixed;inset:0;z-index:0;pointer-events:none;opacity:.05;mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)' opacity='.6'/%3E%3C/svg%3E")}

/* ============ light theme（Kimi 日间模式） ============ */
[data-theme="light"]{
  --bg:#f6f8fc; --bg2:#eef2f8;
  --glass:rgba(255,255,255,.66); --glass2:rgba(255,255,255,.85);
  --line:rgba(15,23,42,.10); --line2:rgba(15,23,42,.18);
  --ink:#18213a; --sub:#4a5878; --dim:#8a96b3;
  --acc:#4C6FFF; --acc-dim:rgba(76,111,255,.10); --acc-line:rgba(76,111,255,.35);
  --acc2:#7B96FF; --warn:#b45309; --neg:#e11d48; --pos:#059669;
}
[data-theme="light"] .bg-fx{background:
  radial-gradient(1100px 600px at 85% -10%,rgba(76,111,255,.10),transparent 60%),
  radial-gradient(900px 550px at -10% 100%,rgba(123,150,255,.08),transparent 60%),var(--bg)}
[data-theme="light"] .orb1{background:radial-gradient(circle,rgba(76,111,255,.16),transparent 65%)}
[data-theme="light"] .orb2{background:radial-gradient(circle,rgba(123,150,255,.12),transparent 65%)}
[data-theme="light"] .orb3{background:radial-gradient(circle,rgba(120,140,255,.12),transparent 65%)}
[data-theme="light"] .grid-fx{background-image:linear-gradient(rgba(15,23,42,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(15,23,42,.05) 1px,transparent 1px)}
[data-theme="light"] .noise{opacity:.03}
[data-theme="light"] ::selection{background:var(--acc);color:#fff}
[data-theme="light"] ::-webkit-scrollbar-thumb{background:rgba(15,23,42,.20)}
[data-theme="light"] .topbar{background:rgba(255,255,255,.42)}
[data-theme="light"] .nav-btn:hover{background:rgba(15,23,42,.06)}
[data-theme="light"] .nav-btn.on{background:linear-gradient(135deg,rgba(76,111,255,.14),rgba(76,111,255,.05))}
[data-theme="light"] .nb-ic{background:rgba(15,23,42,.05)}
[data-theme="light"] .pf-avatar{
  background:linear-gradient(135deg,#e8edff,#d5deff 55%,#c3d0ff);color:#4C6FFF;
  border-color:var(--acc-line);box-shadow:0 8px 24px rgba(76,111,255,.20)}
[data-theme="light"] .brand h1{color:var(--ink)}
[data-theme="light"] .brand-logo{background:linear-gradient(135deg,#e8edff,#d5deff 55%,#c3d0ff);border-color:var(--acc-line);box-shadow:0 8px 24px rgba(76,111,255,.20)}
[data-theme="light"] .brand-logo .logo-ic{color:#4C6FFF}
[data-theme="light"] .pf-name{color:var(--ink);text-shadow:none}
[data-theme="light"] .pf-name .pf-zh{color:var(--ink)}
[data-theme="light"] .pf-glow{opacity:.35}
[data-theme="light"] .pf-role{color:var(--sub)}
[data-theme="light"] .pf-role b{color:var(--ink)}
[data-theme="light"] .pf-bio{color:var(--sub)}
[data-theme="light"] .pf-bio b{color:var(--ink)}
[data-theme="light"] .news-t{color:var(--ink)}
[data-theme="light"] .news-d{color:var(--sub)}
[data-theme="light"] .dash-row:hover{background:rgba(15,23,42,.05)}
[data-theme="light"] .dash-ic{color:var(--acc);background:var(--acc-dim);border-color:var(--acc-line)}
[data-theme="light"] .dash-bar{background:rgba(15,23,42,.08)}
[data-theme="light"] .prog-wrap{background:rgba(15,23,42,.08)}
[data-theme="light"] .mol:hover{box-shadow:0 14px 34px rgba(15,23,42,.18),0 0 0 1px var(--acc-line),0 0 24px rgba(76,111,255,.14)}
[data-theme="light"] .gy:hover{border-color:var(--acc-line)}
[data-theme="light"] .mini-stat{background:rgba(15,23,42,.04)}
[data-theme="light"] .stepn{background:var(--acc-dim)}
[data-theme="light"] .fs{background:rgba(15,23,42,.04)}
[data-theme="light"] .acc-h:hover{background:rgba(15,23,42,.04)}
[data-theme="light"] table.tb th{background:rgba(15,23,42,.05)}
[data-theme="light"] select.sel{background:#fff;color:var(--ink)}
[data-theme="light"] input.search{background:#fff;color:var(--ink)}
[data-theme="light"] input.search::placeholder{color:var(--dim)}
[data-theme="light"] select.sel option{background:#fff;color:var(--ink)}
[data-theme="light"] .kbd-hint{background:rgba(15,23,42,.04)}
[data-theme="light"] .mask{background:rgba(15,23,42,.35)}
[data-theme="light"] .modal{background:#fff;box-shadow:0 30px 90px rgba(15,23,42,.25)}
[data-theme="light"] .modal .x{background:rgba(15,23,42,.06)}
[data-theme="light"] .note{background:rgba(251,191,36,.10);border-color:rgba(251,191,36,.35);color:#92400e}
[data-theme="light"] .gate{background:rgba(251,191,36,.08);border-color:rgba(251,191,36,.45);color:#92400e}

.formula-card{background:linear-gradient(125deg,rgba(76,111,255,.16),rgba(13,20,32,.4) 45%,rgba(123,150,255,.10));border-color:var(--acc-line)}
.formula-card p{color:var(--sub)}
[data-theme="light"] .formula-card{background:linear-gradient(125deg,rgba(76,111,255,.10),rgba(255,255,255,.7) 45%,rgba(123,150,255,.08));border-color:var(--acc-line)}
[data-theme="light"] .formula-card p{color:var(--sub)}

/* ============ 管理表单 & 自定义知识点 ============ */
.mgr-tools{display:flex;gap:9px;align-items:center;flex-wrap:wrap;margin:12px 0}
.mgr-tools .search{flex:1;min-width:170px}
.fm{display:grid;grid-template-columns:1fr 1fr;gap:12px 14px;margin-top:8px}
.fm .f-full{grid-column:1/-1}
.fm label{display:block;font-size:12px;color:var(--sub);margin-bottom:5px;font-weight:600}
.fm input,.fm select,.fm textarea{width:100%;background:rgba(13,20,32,.7);border:1.5px solid var(--line2);border-radius:10px;
  color:var(--ink);font-family:inherit;font-size:13.5px;padding:8px 11px;outline:none;transition:border-color .2s,box-shadow .2s}
.fm input:focus,.fm select:focus,.fm textarea:focus{border-color:var(--acc);box-shadow:0 0 0 3px rgba(76,111,255,.12)}
.fm textarea{min-height:76px;resize:vertical;line-height:1.6}
.fm select option{background:#0d1420;color:var(--ink)}
.fm-actions{grid-column:1/-1;display:flex;gap:10px;justify-content:flex-end;margin-top:8px}
.mgr-row{display:flex;align-items:center;gap:10px;padding:8px 10px;border-radius:10px;transition:background .15s}
.mgr-row:hover{background:rgba(255,255,255,.05)}
.mgr-row+.mgr-row{margin-top:2px}
.mgr-main{flex:1;min-width:0}
.mgr-main b{font-size:13.5px}
.mgr-main small{display:block;font-size:11.5px;color:var(--sub);margin-top:1px}
.mgr-btn{border:1px solid var(--line2);background:var(--glass);color:var(--sub);border-radius:8px;padding:4px 12px;
  font-size:12px;cursor:pointer;font-family:inherit;transition:all .18s}
.mgr-btn:hover{color:var(--acc);border-color:var(--acc-line)}
.mgr-btn.del:hover{color:var(--neg);border-color:rgba(251,113,133,.4)}
.cb-item{border:1px solid var(--line);border-radius:12px;padding:13px 16px;margin-bottom:10px;background:var(--glass)}
.cb-head{display:flex;align-items:center;gap:10px}
.cb-head b{font-size:14.5px;flex:1}
.cb-body{font-size:13.5px;color:var(--sub);line-height:1.85;margin-top:8px}
[data-theme="light"] .fm input,[data-theme="light"] .fm select,[data-theme="light"] .fm textarea{background:#fff}
[data-theme="light"] .fm select option{background:#fff;color:var(--ink)}
[data-theme="light"] .mgr-row:hover{background:rgba(15,23,42,.05)}

/* ============ layout ============ */
#app{display:flex;flex-direction:column;min-height:100vh;position:relative;z-index:1}
.topbar{position:fixed;top:0;left:0;right:0;height:64px;z-index:50;display:flex;align-items:center;gap:18px;
  padding:0 20px;background:rgba(10,16,24,.32);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px)}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand::after{content:'';width:1px;height:26px;flex-shrink:0;margin-right:-10px;background:var(--line)}
.brand h1{font-size:15px;font-weight:800;color:#fff;line-height:1.25;letter-spacing:.02em;white-space:nowrap}
.brand small{display:block;font-size:9px;font-weight:400;color:var(--dim);margin-top:2px;letter-spacing:.16em;text-transform:uppercase;font-family:"Space Grotesk",sans-serif}
.logo-ic{flex-shrink:0;display:inline-block;vertical-align:middle}
.brand-logo{flex-shrink:0;width:38px;height:38px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,#101A3A,#16224F 55%,#1B2A5E);border:1px solid var(--acc-line);
  box-shadow:0 0 16px rgba(76,111,255,.20),inset 0 1px 0 rgba(255,255,255,.09)}
.brand-logo .logo-ic{width:23px;height:23px;color:#EAF0FF}
.nav-scroll{display:flex;align-items:center;gap:4px;overflow-x:auto;flex:1;min-width:0;
  scrollbar-width:none;-ms-overflow-style:none}
.nav-scroll::-webkit-scrollbar{display:none}
.nav-btn{display:flex;align-items:center;gap:7px;flex-shrink:0;white-space:nowrap;background:none;border:none;color:var(--sub);
  padding:7px 13px;border-radius:99px;font-size:13px;cursor:pointer;font-family:inherit;font-weight:500;
  position:relative;overflow:hidden;transition:background .2s,color .2s,transform .2s cubic-bezier(.22,1,.36,1),box-shadow .25s}
.nav-btn:hover{background:rgba(255,255,255,.06);color:var(--ink);transform:translateY(-1px)}
.nav-btn:hover .nb-ic{color:var(--acc);background:var(--acc-dim)}
.nb-ic{flex-shrink:0;width:22px;height:22px;border-radius:7px;display:flex;align-items:center;justify-content:center;
  color:var(--dim);background:rgba(255,255,255,.05);transition:color .2s,background .2s,box-shadow .25s}
.nav-btn.on{background:linear-gradient(135deg,rgba(76,111,255,.22),rgba(76,111,255,.08));color:var(--acc);font-weight:700;
  box-shadow:0 0 18px rgba(76,111,255,.18),inset 0 0 0 1px var(--acc-line)}
.nav-btn.on .nb-ic{color:var(--acc);background:var(--acc-dim);box-shadow:0 0 10px rgba(76,111,255,.25)}
.nav-count{font-size:9.5px;line-height:1;padding:3px 7px;border-radius:99px;background:rgba(255,255,255,.07);
  border:1px solid var(--line);color:var(--dim);font-family:"Space Grotesk",sans-serif}
.nav-btn.on .nav-count{background:var(--acc-dim);border-color:var(--acc-line);color:var(--acc)}
.topbar-side{display:flex;align-items:center;gap:10px;flex-shrink:0}
.tb-chip{font-family:"Space Grotesk","Noto Sans SC",sans-serif;font-size:11.5px;color:var(--sub);
  border:1px solid var(--line);background:var(--glass);border-radius:99px;padding:5px 13px;white-space:nowrap}
.tb-chip b{color:var(--acc)}
.tb-reset{width:30px;height:30px;border-radius:99px;border:1px solid var(--line);background:var(--glass);color:var(--dim);
  cursor:pointer;font-size:14px;line-height:1;transition:color .2s,border-color .2s,transform .2s}
.tb-reset:hover{color:var(--neg);border-color:rgba(251,113,133,.4);transform:rotate(-20deg)}
#app main{flex:1;width:100%;max-width:1180px;margin:0 auto;padding:96px 36px 80px;min-width:0}
#app ~ footer{width:100%;max-width:1180px;margin:0 auto;padding:0 36px 30px;color:var(--dim);font-size:12px;position:relative;z-index:1}

/* ============ focus-visible（键盘可达性） ============ */
.nav-btn:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,
.mol:focus-visible,.gy:focus-visible,[tabindex]:focus-visible{
  outline:2px solid var(--acc);outline-offset:2px;border-radius:8px}

/* ============ generic ============ */
h2.pg{font-size:28px;font-weight:900;letter-spacing:-.01em;margin-bottom:6px;display:flex;align-items:center;gap:12px}
h2.pg .pg-ic{color:var(--acc);display:inline-flex}
h2.pg .em{background:linear-gradient(90deg,var(--acc),var(--acc2));-webkit-background-clip:text;background-clip:text;color:transparent}
.card-title{font-size:16px;font-weight:800;margin-bottom:13px;display:flex;align-items:center;gap:9px;color:var(--ink)}
.card-title .t-ic{color:var(--acc);display:inline-flex;flex-shrink:0}
.sub-title{font-size:20px;font-weight:800;margin-bottom:12px}
.page-sub{color:var(--sub);margin-bottom:26px;font-size:14px}
.ic-svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}
.ic-lg{width:20px;height:20px}
.card{background:var(--glass);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border:1px solid var(--line);border-radius:16px;padding:22px 26px;margin-bottom:18px;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.05),0 10px 30px rgba(0,0,0,.25)}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
@media(max-width:980px){.grid2,.grid3{grid-template-columns:1fr}}
.tag{display:inline-block;font-size:11px;padding:2.5px 10px;border-radius:99px;margin-right:6px;white-space:nowrap;
  background:var(--acc-dim);color:var(--acc);border:1px solid var(--acc-line);font-weight:500}
.tag.neg{background:rgba(251,113,133,.12);color:var(--neg);border-color:rgba(251,113,133,.3)}
.kw{color:var(--acc);font-weight:700}
.term{color:var(--acc);border-bottom:1.5px dotted var(--acc-line);cursor:pointer;transition:background .2s}
.term:hover{background:var(--acc-dim)}
button.btn{background:linear-gradient(135deg,#4C6FFF,#2E4FD7);border:none;color:#fff;padding:10px 20px;border-radius:11px;
  cursor:pointer;font-size:14px;font-weight:600;font-family:inherit;position:relative;overflow:hidden;
  transition:transform .2s cubic-bezier(.22,1,.36,1),box-shadow .25s;box-shadow:0 4px 18px rgba(76,111,255,.25),inset 0 1px 0 rgba(255,255,255,.18)}
button.btn::after{content:'';position:absolute;top:0;bottom:0;width:46%;left:-80%;transform:skewX(-22deg);
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.32),transparent);transition:left .55s ease}
button.btn:hover{transform:translateY(-2px);box-shadow:0 8px 26px rgba(76,111,255,.38),inset 0 1px 0 rgba(255,255,255,.18)}
button.btn:hover::after{left:135%}
button.btn:active{transform:scale(.96)}
button.btn.ghost{background:transparent;color:var(--acc);border:1px solid var(--acc-line);box-shadow:none}
button.btn.ghost:hover{background:var(--acc-dim);box-shadow:none}
.note{background:rgba(251,191,36,.07);border:1px solid rgba(251,191,36,.22);border-radius:12px;padding:11px 15px;font-size:13.5px;margin:13px 0;color:#fde68a}
.hl{background:linear-gradient(transparent 62%,rgba(76,111,255,.28) 62%);border-radius:2px}
ul.tight{padding-left:20px}ul.tight li{margin-bottom:7px}
table.tb{width:100%;border-collapse:collapse;font-size:13.5px;margin-top:8px}
table.tb th{background:rgba(255,255,255,.05);text-align:left;padding:9px 12px;border-bottom:1.5px solid var(--line2);font-weight:700;color:var(--acc2)}
table.tb td{padding:9px 12px;border-bottom:1px solid var(--line);vertical-align:top;color:var(--ink)}

/* ============ accordion ============ */
.acc{border:1px solid var(--line);border-radius:14px;margin-bottom:12px;background:var(--glass);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);overflow:hidden;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.04);transition:border-color .25s}
.acc.open{border-color:var(--acc-line)}
.acc-h{width:100%;text-align:left;padding:15px 20px;font-size:15.5px;font-weight:700;background:none;border:none;cursor:pointer;
  display:flex;justify-content:space-between;align-items:center;font-family:inherit;color:var(--ink);transition:background .2s;gap:12px}
.acc-h:hover{background:rgba(255,255,255,.04)}
.acc-h .ar{transition:transform .3s cubic-bezier(.22,1,.36,1);color:var(--acc);flex-shrink:0;font-size:13px}
.acc.open .acc-h .ar{transform:rotate(90deg)}
.acc-b{max-height:0;overflow:hidden;transition:max-height .4s ease;padding:0 20px}
.acc.open .acc-b{max-height:3600px;padding:2px 20px 18px}

/* ============ home / hero（旧版卡片样式已移除，全屏 Hero 见文末 2026.08 区块） ============ */
.stat{background:var(--glass);border:1px solid var(--line);border-radius:16px;padding:20px 16px;text-align:center;
  backdrop-filter:blur(12px);transition:transform .25s cubic-bezier(.22,1,.36,1),border-color .25s}
.stat:hover{transform:translateY(-3px);border-color:var(--acc-line)}
.stat b{font-family:"Space Grotesk","Noto Sans SC",sans-serif;font-size:32px;font-weight:700;display:block;
  background:linear-gradient(135deg,var(--acc),var(--acc2));-webkit-background-clip:text;background-clip:text;color:transparent}
.stat span{font-size:12.5px;color:var(--sub)}
.step{display:flex;gap:15px;align-items:flex-start;margin-bottom:15px}
.step:last-child{margin-bottom:0}
.stepn{flex-shrink:0;width:36px;height:36px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  font-weight:800;font-family:"Space Grotesk",sans-serif;color:var(--acc);background:var(--acc-dim);
  border:1px solid var(--acc-line);box-shadow:0 0 14px rgba(76,111,255,.15)}

/* ============ home dashboard v4 ============ */
/* orb3：暖橙第三光晕（参考站双色光晕语言） */
.orb3{width:480px;height:480px;background:radial-gradient(circle,rgba(251,146,60,.13),transparent 65%);top:34%;right:-180px;animation:drift3 24s ease-in-out infinite alternate}
@keyframes drift3{from{transform:translate(0,0) scale(1)}to{transform:translate(-70px,50px) scale(1.12)}}

/* ---- profile hero（参考站骨架：头像+光环+大名+bio） ---- */
.pf-hero{text-align:center;padding-top:34px;margin-bottom:30px}
.pf-avwrap{position:relative;display:inline-block;margin-bottom:20px}
.pf-ring{position:absolute;inset:-14px;border-radius:50%;border:1px solid rgba(255,255,255,.10);pointer-events:none}
.pf-glow{position:absolute;inset:-22px;border-radius:50%;
 background:conic-gradient(from 200deg at 50% 50%,rgba(76,111,255,.5),rgba(251,146,60,.42),rgba(74,222,128,.35),rgba(125,211,252,.5),rgba(76,111,255,.5));
 filter:blur(16px);opacity:.6;animation:pfring 9s linear infinite;pointer-events:none}
@keyframes pfring{from{transform:rotate(0deg)}to{transform:rotate(360deg)}}
.pf-avatar{position:relative;width:128px;height:128px;border-radius:50%;display:flex;align-items:center;justify-content:center;
 font-size:52px;font-weight:900;font-family:"Cormorant Garamond",serif;color:#fff;user-select:none;
 background:linear-gradient(135deg,#101A3A,#16224F 55%,#1B2A5E);
 border:4px solid rgba(255,255,255,.85);box-shadow:0 18px 50px rgba(0,0,0,.5),inset 0 2px 10px rgba(255,255,255,.08)}
.pf-kicker{font-family:"Space Grotesk","Noto Sans SC",sans-serif;font-size:11px;letter-spacing:.26em;text-transform:uppercase;
 color:var(--acc);margin-bottom:12px}
.pf-name{font-family:"Cormorant Garamond","Noto Serif SC",serif;font-size:56px;font-weight:700;line-height:1.15;color:#fff;
 letter-spacing:.02em;text-shadow:0 4px 40px rgba(76,111,255,.18)}
.pf-name .pf-zh{font-size:64px}
.pf-role{margin-top:8px;color:#b9c6ea;font-size:14.5px}
.pf-role b{color:#eef3f6}
.pf-bio{max-width:640px;margin:16px auto 0;color:var(--sub);font-size:14px;line-height:1.85}
.pf-bio b{color:#eef3f6}
@media(max-width:720px){.pf-name{font-size:38px}.pf-name .pf-zh{font-size:46px}.pf-avatar{width:104px;height:104px;font-size:42px}}

/* ---- pill nav（参考站社交图标行风格：胶囊+悬浮浮起） ---- */
.pf-pills{display:flex;flex-wrap:wrap;justify-content:center;gap:11px;margin:26px auto 8px;max-width:760px}
.pf-pill{display:inline-flex;align-items:center;gap:8px;padding:9px 18px;border-radius:99px;cursor:pointer;
 border:1px solid var(--line2);background:var(--glass);color:var(--sub);font-family:inherit;font-size:13.5px;font-weight:500;
 transition:transform .22s cubic-bezier(.22,1,.36,1),border-color .22s,color .22s,background .22s,box-shadow .25s}
.pf-pill:hover{transform:translateY(-3px);color:var(--ink);border-color:var(--acc-line);box-shadow:0 10px 26px rgba(0,0,0,.35),0 0 16px rgba(76,111,255,.12)}
.pf-pill:focus-visible{outline:2px solid var(--acc);outline-offset:2px}
.pf-pill svg.ic-svg{width:15px;height:15px}
.pf-pill .pp-cnt{font-family:"Space Grotesk",sans-serif;font-size:11px;color:var(--acc)}
.pf-pill.pp-hot{background:linear-gradient(135deg,rgba(76,111,255,.20),rgba(76,111,255,.06));border-color:var(--acc-line);color:var(--acc);font-weight:700}

/* ---- news timeline（参考站「最新动态」行风格） ---- */
.news-row{display:flex;gap:13px;padding:9px 12px;border-radius:10px;transition:background .18s;cursor:pointer}
.news-row:hover{background:rgba(255,255,255,.05)}
.news-row+.news-row{margin-top:2px}
.news-date{flex-shrink:0;margin-top:2px;font-family:"Space Grotesk","Noto Sans SC",sans-serif;font-size:12.5px;font-weight:600;
 color:var(--dim);white-space:nowrap;width:58px}
.news-body{min-width:0;flex:1}
.news-t{font-size:14px;font-weight:700;color:var(--ink);line-height:1.5}
.news-d{font-size:12.5px;color:var(--sub);line-height:1.6;margin-top:1px}
.news-tag{display:inline-block;vertical-align:1px;font-size:10px;padding:1px 8px;border-radius:99px;margin-right:7px;
 letter-spacing:.06em;font-weight:700}
.news-tag.t-new{background:rgba(74,222,128,.13);color:var(--pos);border:1px solid rgba(74,222,128,.32)}
.news-tag.t-plan{background:rgba(251,191,36,.10);color:var(--warn);border:1px solid rgba(251,191,36,.30)}
.news-tag.t-sci{background:rgba(125,211,252,.12);color:var(--acc2);border:1px solid rgba(125,211,252,.30)}

/* ============ home dashboard v4 (cards) ============ */
.home-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:18px}
.hg-tl{grid-column:span 7}.hg-tr{grid-column:span 5}
@media(max-width:980px){.hg-tl,.hg-tr{grid-column:1/-1}}
.dash-list{display:flex;flex-direction:column}
.dash-row{display:flex;align-items:center;gap:13px;padding:11px 10px;border-radius:12px;cursor:pointer;
 transition:background .2s;position:relative;overflow:hidden}
.dash-row:hover{background:rgba(255,255,255,.05)}
.dash-row+.dash-row{margin-top:2px}
.dash-ic{flex-shrink:0;width:38px;height:38px;border-radius:11px;display:flex;align-items:center;justify-content:center;
 background:var(--acc-dim);border:1px solid var(--acc-line);color:var(--acc)}
.dash-main{flex:1;min-width:0;display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.dash-main b{font-size:14px}
.dash-desc{width:100%;font-size:12.5px;color:var(--sub);margin-top:1px;line-height:1.55}
.dash-num{font-family:"Space Grotesk","Noto Sans SC",sans-serif;font-weight:700;font-size:14.5px;color:var(--acc);
 background:var(--acc-dim);border:1px solid var(--acc-line);border-radius:99px;padding:2px 12px;white-space:nowrap}
.dash-num.ok{color:var(--pos);background:rgba(74,222,128,.12);border-color:rgba(74,222,128,.35)}
.dash-go{flex-shrink:0;color:var(--dim);transition:transform .22s cubic-bezier(.22,1,.36,1),color .2s}
.dash-row:hover .dash-go{transform:translateX(4px);color:var(--acc)}
.dash-bar{height:5px;border-radius:99px;background:rgba(255,255,255,.08);overflow:hidden;margin-top:6px;width:100%}
.dash-bar i{display:block;height:100%;width:0%;border-radius:99px;background:linear-gradient(90deg,var(--acc2),var(--acc));
 box-shadow:0 0 8px rgba(76,111,255,.45);transition:width .5s cubic-bezier(.22,1,.36,1)}
.mini-stat{background:rgba(255,255,255,.04);border:1px solid var(--line);border-radius:12px;padding:9px 13px;
 display:flex;align-items:center;gap:9px;flex-wrap:wrap;margin-top:11px;font-size:13px;color:var(--sub)}
.mini-stat b{color:var(--ink)}
.mini-stat .sv{font-family:"Space Grotesk","Noto Sans SC",sans-serif;color:var(--acc);font-weight:700}
.home-foot{margin-top:18px;padding-top:14px;border-top:1px dashed var(--line2);
 display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap}
.home-foot small{color:var(--dim);font-size:12px}
.link-btn{background:none;border:none;color:var(--sub);cursor:pointer;font-family:inherit;font-size:12.5px;
 padding:4px 10px;border-radius:8px;transition:color .2s,background .2s}
.link-btn:hover{color:var(--neg);background:rgba(251,113,133,.1)}

/* ============ mechanism tabs ============ */
.mtabs{display:flex;gap:9px;margin-bottom:16px;flex-wrap:wrap}
.mtab{padding:9px 19px;border-radius:99px;border:1.5px solid var(--line2);background:var(--glass);cursor:pointer;
  font-size:13.5px;font-family:inherit;color:var(--sub);transition:all .25s cubic-bezier(.22,1,.36,1)}
.mtab:hover{border-color:var(--acc-line);color:var(--ink);transform:translateY(-1px)}
.mtab.on{background:linear-gradient(135deg,rgba(76,111,255,.25),rgba(76,111,255,.08));color:var(--acc);
  border-color:var(--acc);font-weight:700;box-shadow:0 0 18px rgba(76,111,255,.18)}
.flow{display:flex;flex-direction:column;gap:9px;margin:14px 0}
.flow .fs{background:rgba(255,255,255,.04);border-left:3px solid var(--acc);padding:10px 15px;border-radius:8px;font-size:14px}
.flow-arrow{text-align:center;color:var(--acc);font-size:13px;line-height:1;margin:-3px 0}

/* ============ atlas ============ */
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px}
.chip{padding:7px 15px;border-radius:99px;border:1px solid var(--line2);background:var(--glass);cursor:pointer;
  font-size:12.5px;font-family:inherit;color:var(--sub);transition:all .22s cubic-bezier(.22,1,.36,1)}
.chip:hover{border-color:var(--acc-line);color:var(--ink);transform:translateY(-1px)}
.chip.on{background:linear-gradient(135deg,rgba(76,111,255,.25),rgba(76,111,255,.08));color:var(--acc);
  border-color:var(--acc);font-weight:700;box-shadow:0 0 14px rgba(76,111,255,.15)}
.filter-row{display:flex;gap:10px;margin-bottom:16px;flex-wrap:wrap}
.search-wrap{position:relative;flex:1;min-width:230px}
select.sel,input.search{background:rgba(13,20,32,.7);border:1.5px solid var(--line2);border-radius:11px;color:var(--ink);
  font-family:inherit;font-size:13.5px;padding:9px 13px;outline:none;transition:border-color .2s,box-shadow .2s}
select.sel:focus,input.search:focus{border-color:var(--acc);box-shadow:0 0 0 3px rgba(76,111,255,.12)}
input.search{width:100%;margin:0;padding-right:44px}
select.sel option{background:#0d1420;color:var(--ink)}
.kbd-hint{position:absolute;right:11px;top:50%;transform:translateY(-50%);pointer-events:none;
  font-family:"Space Grotesk",sans-serif;font-size:11px;color:var(--dim);border:1px solid var(--line2);
  border-bottom-width:2px;border-radius:6px;padding:1px 7px;background:rgba(255,255,255,.04)}
#molCount{font-size:13px;color:var(--sub);margin-bottom:12px}
#molCount b{color:var(--acc);font-family:"Space Grotesk",sans-serif}
#mGrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(292px,1fr));gap:14px}
.mol{background:var(--glass);border:1px solid var(--line);border-radius:15px;padding:16px 17px;cursor:pointer;position:relative;overflow:hidden;
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);display:flex;gap:13px;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.04);
  transition:transform .25s cubic-bezier(.22,1,.36,1),border-color .25s,box-shadow .3s;
  animation:molIn .4s cubic-bezier(.22,1,.36,1) backwards}
@keyframes molIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}
.mol::before{content:'';position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,var(--acc),var(--acc2));opacity:0;transition:opacity .25s}
.mol:hover{transform:translateY(-4px);border-color:var(--acc-line);
  box-shadow:0 14px 34px rgba(0,0,0,.4),0 0 0 1px var(--acc-line),0 0 28px rgba(76,111,255,.13)}
.mol:hover::before{opacity:.8}
.mol-info{flex:1;min-width:0}
.mol-info b{font-size:15px;display:block;padding-right:70px;line-height:1.45}
.mol .en{font-size:12px;color:var(--sub);font-family:"Space Grotesk",sans-serif;letter-spacing:.02em}
.mol .cas{font-size:11.5px;color:#7d93a0;font-family:Consolas,"Space Grotesk",monospace;margin-top:5px}
.mol-info p{font-size:12.5px;color:var(--sub);margin-top:7px;line-height:1.6}
.mech-line{color:var(--acc)!important;font-size:12px!important}
.el-badge{position:absolute;top:15px;right:15px;font-size:10.5px;padding:3px 9px;border-radius:99px;font-weight:600}
.el-badge.inline{position:static;display:inline-block;margin-right:6px}
.el-neg{background:rgba(96,165,250,.14);color:#7cb0fa;border:1px solid rgba(96,165,250,.3)}
.el-pos{background:rgba(251,113,133,.13);color:#fa9aa8;border:1px solid rgba(251,113,133,.3)}
.el-bi{background:rgba(74,222,128,.12);color:#6fe09a;border:1px solid rgba(74,222,128,.3)}
.el-el{background:rgba(94,234,212,.13);color:#b4a2f5;border:1px solid rgba(94,234,212,.3)}
.stars{color:var(--warn)}
/* 结构式缩略图 */
.skel{flex-shrink:0;width:66px;height:66px;border-radius:11px;background:rgba(255,255,255,.05);
  border:1px solid var(--line);display:flex;align-items:center;justify-content:center;overflow:hidden}
.skel svg{width:62px;height:62px}
.skel .fallback{font-size:9.5px;color:var(--dim);text-align:center;line-height:1.5;padding:4px;font-family:"Space Grotesk",sans-serif}
.sd-box{margin:6px 0 2px;padding:12px;border:1px solid var(--line);border-radius:12px;
  background:radial-gradient(circle at 50% 40%,rgba(255,255,255,.05),rgba(255,255,255,.015));
  display:flex;align-items:center;justify-content:center;min-height:120px}
.sd-box svg{width:240px;height:150px}
.sd-empty{font-size:12px;color:var(--dim)}

/* modal */
.mask{position:fixed;inset:0;background:rgba(4,8,12,.66);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);
  display:flex;align-items:center;justify-content:center;z-index:90;padding:22px;
  opacity:0;pointer-events:none;transition:opacity .25s ease}
.mask.show{opacity:1;pointer-events:auto}
.modal{background:linear-gradient(160deg,#101a26,#0b1119);border:1px solid var(--line2);border-radius:20px;
  max-width:680px;width:100%;max-height:86vh;overflow-y:auto;padding:28px 32px;position:relative;
  box-shadow:0 30px 90px rgba(0,0,0,.55),inset 0 1px 0 rgba(255,255,255,.07);
  transform:translateY(16px) scale(.97);transition:transform .28s cubic-bezier(.22,1,.36,1)}
.mask.show .modal{transform:translateY(0) scale(1)}
.modal .x{position:absolute;top:15px;right:19px;border:none;background:rgba(255,255,255,.06);color:var(--sub);
  width:32px;height:32px;border-radius:10px;font-size:17px;cursor:pointer;transition:all .2s}
.modal .x:hover{background:rgba(251,113,133,.15);color:var(--neg);transform:rotate(90deg)}
.modal h3{font-size:21px;font-weight:900;margin-bottom:2px;padding-right:40px}
.modal .en{color:var(--sub);font-size:13px;font-family:"Space Grotesk",sans-serif}
.modal .cas{font-family:Consolas,monospace;color:var(--dim);font-size:12.5px;margin:9px 0 15px}
.dl{font-size:14px}
.dl dt{font-weight:700;color:var(--acc);margin-top:13px;display:flex;align-items:center;gap:7px}
.dl dt::before{content:'▸';font-size:12px}
.dl dd{margin-left:0;color:var(--ink)}
.prop-chips{display:flex;flex-wrap:wrap;gap:7px;margin-top:5px}
.pchip{font-size:12px;padding:3.5px 11px;border-radius:8px;background:rgba(255,255,255,.05);
  border:1px solid var(--line);font-family:Consolas,"Noto Sans SC",monospace}

/* ============ plan / weekly ============ */
.gate{background:rgba(251,191,36,.06);border:1px dashed rgba(251,191,36,.35);border-radius:12px;padding:13px 17px;margin:13px 0;font-size:14px;color:#fde68a}
.gate b{color:var(--warn)}
.ck{list-style:none;padding-left:0}
.ck li{margin-bottom:8px;display:flex;gap:10px;align-items:flex-start;font-size:14px}
.ck input{margin-top:5px;accent-color:var(--acc);width:16px;height:16px;flex-shrink:0;cursor:pointer}
.ck li.done label{text-decoration:line-through;color:var(--dim)}
.prog-wrap{background:rgba(255,255,255,.07);border-radius:99px;height:9px;overflow:hidden;margin:6px 0 2px}
.prog-bar{height:100%;background:linear-gradient(90deg,var(--acc2),var(--acc));width:0%;border-radius:99px;
  transition:width .5s cubic-bezier(.22,1,.36,1);box-shadow:0 0 10px rgba(76,111,255,.5)}
.prog-label{font-size:12px;color:var(--sub)}
.wk-row{display:grid;grid-template-columns:92px 1fr;gap:14px;padding:14px 0;border-bottom:1px solid var(--line)}
.wk-row:last-child{border:none}
.wk-no{font-weight:700;color:var(--acc)}

/* ============ quiz ============ */
.q-opt{display:block;width:100%;text-align:left;background:var(--glass);border:1.5px solid var(--line2);border-radius:12px;
  padding:12px 16px;margin-bottom:10px;cursor:pointer;font-size:14px;font-family:inherit;color:var(--ink);
  transition:all .2s cubic-bezier(.22,1,.36,1)}
.q-opt:hover{border-color:var(--acc-line);transform:translateX(3px)}
.q-opt.right{border-color:var(--pos);background:rgba(74,222,128,.1)}
.q-opt.wrong{border-color:var(--neg);background:rgba(251,113,133,.1)}

/* ============ glossary ============ */
#gyGrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(290px,1fr));gap:13px}
.gy{background:var(--glass);border:1px solid var(--line);border-radius:13px;padding:15px 17px;cursor:pointer;
  transition:transform .22s cubic-bezier(.22,1,.36,1),border-color .22s;animation:molIn .35s cubic-bezier(.22,1,.36,1) backwards}
.gy:hover{transform:translateY(-3px);border-color:var(--acc-line)}
.gy b{color:var(--acc)}
.gy p{font-size:13px;color:var(--sub);margin-top:5px;line-height:1.65}
.hide{display:none!important}
.pagein{animation:pageIn .3s ease}
@keyframes pageIn{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}

/* ============ mobile：顶部导航横滚 ============ */
@media(max-width:900px){
  .topbar{height:58px;padding:0 12px;gap:10px}
  .brand h1 small{display:none}
  .topbar-side{display:none}
  #app main{padding:84px 18px 60px}
  #app ~ footer{padding:0 18px 24px}
  .nav-btn{padding:6px 11px;font-size:12.5px}
}
@media(min-width:901px){ .nav-scroll{justify-content:center} }

/* ============ 学习笔记（材料电化学）整合 ============ */
#notesRoot{display:none}
body.notes-mode #notesRoot{display:block}
body.notes-mode #app,
body.notes-mode #readbar,
body.notes-mode .mask,
body.notes-mode #app ~ footer,
body.notes-mode .bg-fx,
body.notes-mode .orb,
body.notes-mode .grid-fx,
body.notes-mode .noise{display:none!important}

/* 学习笔记切换动画 */
#notesRoot.notes-in{animation:notesIn .4s cubic-bezier(.22,1,.36,1) both}
#notesRoot.notes-out{animation:notesOut .26s ease both}
@keyframes notesIn{from{opacity:0}to{opacity:1}}
@keyframes notesOut{from{opacity:1}to{opacity:0}}

/* 表格横向滚动 */
.tb-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;max-width:100%}
@media(max-width:640px){.tb-scroll table.tb{min-width:540px}}

/* ============================================================
   RESET & BASE (from v2)
   ============================================================ */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}

#notesRoot{
  font-family:-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC','Microsoft YaHei','Helvetica Neue',sans-serif;
  background:#0a0a0f;color:#e2e8f0;line-height:1.85;min-height:100vh;
  padding-top:130px;overflow-x:hidden;
}
#notesRoot a{color:#8FA3FF;text-decoration:none;}
#notesRoot a:hover{text-decoration:underline;}




/* Progress bar */
#progress-bar{
  position:fixed;top:0;left:0;height:3px;
  background:linear-gradient(90deg,#4C6FFF,#4C6FFF,#7B96FF);
  z-index:10000;transition:width 0.15s ease;box-shadow:0 0 8px rgba(76,111,255,0.3);
}

/* Navbar */
.navbar{
  position:fixed;top:0;left:0;right:0;z-index:9999;
  background:rgba(10,10,15,0.85);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
  border-bottom:1px solid rgba(255,255,255,0.06);
  transition:all 0.3s ease;
}
.navbar-inner{
  max-width:1200px;margin:0 auto;padding:10px 20px;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
}
.navbar-logo{
  font-size:1.1em;font-weight:800;white-space:nowrap;
  background:linear-gradient(135deg,#4C6FFF,#4C6FFF);
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;
  background-clip:text;
}
.navbar-controls{display:flex;align-items:center;gap:8px;flex-shrink:0;}
.progress-stats{
  display:flex;align-items:center;gap:10px;font-size:0.78em;
  color:rgba(255,255,255,0.5);
}
.home-btn{
  width:36px;height:36px;border-radius:50%;border:1px solid rgba(76,111,255,0.3);
  background:linear-gradient(135deg,rgba(76,111,255,0.15),rgba(76,111,255,0.15));
  color:#B8C4FF;cursor:pointer;font-size:1em;
  display:flex;align-items:center;justify-content:center;
  transition:all 0.3s ease;box-shadow:0 0 12px rgba(76,111,255,0.1);
}
.home-btn:hover{
  background:linear-gradient(135deg,rgba(76,111,255,0.3),rgba(76,111,255,0.3));
  transform:scale(1.1) rotate(-10deg);
  box-shadow:0 0 20px rgba(76,111,255,0.3);
}
.progress-stats span{white-space:nowrap;}
.progress-bar-mini{
  width:80px;height:4px;background:rgba(255,255,255,0.08);border-radius:2px;overflow:hidden;
}
.progress-bar-mini-fill{
  height:100%;background:linear-gradient(90deg,#4C6FFF,#4C6FFF);border-radius:2px;
  transition:width 0.5s ease;
}
.theme-btn{
  width:36px;height:36px;border-radius:50%;border:1px solid rgba(255,255,255,0.1);
  background:rgba(255,255,255,0.05);color:#e2e8f0;cursor:pointer;font-size:1em;
  display:flex;align-items:center;justify-content:center;
  transition:all 0.3s ease;
}
.theme-btn:hover{background:rgba(255,255,255,0.1);transform:translateY(-1px);}

/* Pill nav */
.pill-nav-wrap{
  max-width:1200px;margin:0 auto;padding:6px 20px 10px;
  overflow-x:auto;white-space:nowrap;scrollbar-width:none;
  display:flex;gap:6px;flex-wrap:wrap;justify-content:center;
  transition:all 0.4s cubic-bezier(0.4,0,0.2,1);
  max-height:60px;opacity:1;
}
.pill-nav-wrap.hidden{
  max-height:0;padding:0 20px;opacity:0;margin:0;overflow:hidden;
}
.pill-nav-wrap::-webkit-scrollbar{display:none;}

/* Hover trigger area at top to reveal pills */
.navbar::after{
  content:'';position:absolute;left:0;right:0;bottom:-30px;height:30px;
  z-index:9998;pointer-events:none;
}
.pill-nav-wrap.hidden:hover,
.navbar:hover + .pill-nav-wrap.hidden,
.pill-nav-wrap.hidden:focus-within{
  max-height:60px;padding:6px 20px 10px;opacity:1;overflow:visible;
}
.pill-btn{
  display:inline-flex;align-items:center;gap:4px;
  padding:6px 16px;border-radius:999px;border:1px solid rgba(255,255,255,0.08);
  background:rgba(255,255,255,0.04);color:rgba(255,255,255,0.6);
  font-size:0.82em;font-weight:500;white-space:nowrap;
  cursor:pointer;transition:all 0.3s cubic-bezier(0.4,0,0.2,1);
  user-select:none;position:relative;
}
.pill-btn:hover{background:rgba(255,255,255,0.08);color:#e2e8f0;border-color:rgba(255,255,255,0.15);transform:translateY(-1px);}
.pill-btn:active{transform:scale(0.96);}
.pill-btn.active{
  background:linear-gradient(135deg,rgba(76,111,255,0.2),rgba(76,111,255,0.15));
  border-color:rgba(76,111,255,0.3);color:#B8C4FF;font-weight:600;
  box-shadow:0 0 20px rgba(76,111,255,0.15),inset 0 0 20px rgba(76,111,255,0.05);
}

/* Search */
.search-section{max-width:1200px;margin:0 auto;padding:0 20px 12px;}
.search-box{position:relative;max-width:480px;margin:0 auto;}
.search-box input{
  width:100%;padding:8px 14px 8px 36px;
  border:1px solid rgba(255,255,255,0.08);border-radius:999px;
  background:rgba(255,255,255,0.04);color:#e2e8f0;
  font-size:0.85em;outline:none;transition:all 0.3s ease;
}
.search-box input:focus{border-color:rgba(76,111,255,0.4);background:rgba(255,255,255,0.06);box-shadow:0 0 20px rgba(76,111,255,0.05);}
.search-box input::placeholder{color:rgba(255,255,255,0.25);}
.search-box::before{content:'🔍';position:absolute;left:12px;top:50%;transform:translateY(-50%);font-size:0.8em;opacity:0.4;}

/* Main content */
.main-content{max-width:900px;margin:0 auto;padding:20px 20px 50px 60px;animation:fadeIn 0.6s ease;}
@keyframes fadeIn{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}

/* ============================================================
   HOMEPAGE / SPLASH
   ============================================================ */
.homepage{text-align:center;padding:20px 0 10px;margin-bottom:10px;}
.homepage h1{
  font-size:2.2em;font-weight:900;
  background:linear-gradient(135deg,#4C6FFF,#4C6FFF,#7B96FF);
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;
  background-clip:text;letter-spacing:2px;line-height:1.3;
}
.homepage .subtitle{color:rgba(255,255,255,0.4);font-size:0.95em;margin-top:4px;}
.homepage .badges{display:flex;gap:8px;justify-content:center;margin-top:8px;flex-wrap:wrap;}
.homepage .badge{padding:3px 14px;border-radius:999px;font-size:0.72em;font-weight:600;}
.homepage .badge-ms{background:rgba(76,111,255,0.2);color:#B8C4FF;}
.homepage .badge-ec{background:rgba(125,211,252,0.2);color:#93c5fd;}
.homepage .badge-fr{background:rgba(76,111,255,0.2);color:#B8C4FF;}

.module-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:16px auto;max-width:700px;}
.module-card{
  background:rgba(255,255,255,0.03);backdrop-filter:blur(12px);
  border:1px solid rgba(255,255,255,0.06);border-radius:14px;padding:14px 12px;
  cursor:pointer;transition:all 0.3s ease;text-align:center;
}
.module-card:hover{transform:translateY(-3px);border-color:rgba(76,111,255,0.3);box-shadow:0 6px 24px rgba(76,111,255,0.08);}
.module-card .icon{font-size:1.6em;margin-bottom:4px;}
.module-card .name{font-weight:700;font-size:0.9em;color:#e2e8f0;}
.module-card .desc{font-size:0.72em;color:rgba(255,255,255,0.4);margin-top:2px;}

.start-btn{
  display:inline-block;padding:12px 36px;border-radius:999px;
  background:linear-gradient(135deg,#4C6FFF,#4C6FFF);color:white;
  font-size:1.05em;font-weight:700;cursor:pointer;border:none;
  transition:all 0.3s ease;box-shadow:0 4px 20px rgba(76,111,255,0.3);
  margin-top:6px;
}
.start-btn:hover{transform:translateY(-2px);box-shadow:0 8px 30px rgba(76,111,255,0.4);}

.homepage-intro{max-width:600px;margin:12px auto 0;font-size:0.82em;color:rgba(255,255,255,0.45);line-height:1.7;}

/* ============================================================
   TABLE OF CONTENTS (TOC)
   ============================================================ */
.toc-section{display:none;margin-bottom:20px;}
.toc-section.visible{display:block;}
.toc-header{text-align:center;margin-bottom:12px;}
.toc-header h2{font-size:1.2em;font-weight:800;color:#B8C4FF;}
.toc-module{margin-bottom:10px;}
.toc-module-title{
  font-size:0.88em;font-weight:700;color:#8FA3FF;
  padding:4px 0;border-bottom:1px solid rgba(76,111,255,0.15);
  margin-bottom:4px;
}
.toc-item{
  display:flex;align-items:center;justify-content:space-between;
  padding:5px 8px;border-radius:6px;cursor:pointer;
  transition:all 0.2s;font-size:0.82em;
  border-left:2px solid transparent;
}
.toc-item:hover{background:rgba(255,255,255,0.04);border-left-color:#4C6FFF;}
.toc-item .toc-num{color:rgba(255,255,255,0.3);font-weight:600;min-width:48px;}
.toc-item .toc-title{color:#e2e8f0;flex:1;margin:0 8px;}
.toc-item .toc-meta{color:rgba(255,255,255,0.35);font-size:0.78em;white-space:nowrap;}
.toc-learned{color:#4ade80;font-size:0.85em;margin-left:4px;}

/* Tab buttons for homepage/toc */
/* Side tab bar */
.tab-bar{
  position:fixed;left:0;top:130px;z-index:900;
  display:flex;flex-direction:column;gap:2px;
  padding:8px 6px;
  background:rgba(10,10,15,0.6);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-radius:0 12px 12px 0;
  border:1px solid rgba(255,255,255,0.06);border-left:none;
}
.tab-btn{
  padding:8px 10px;border-radius:8px;border:1px solid transparent;
  background:transparent;color:rgba(255,255,255,0.4);cursor:pointer;
  font-size:0.75em;transition:all 0.3s ease;white-space:nowrap;
  writing-mode:vertical-lr;letter-spacing:2px;font-weight:500;
  text-align:center;
}
.tab-btn.active{
  background:rgba(76,111,255,0.15);border-color:rgba(76,111,255,0.2);color:#B8C4FF;
  box-shadow:0 0 12px rgba(76,111,255,0.1);
}
.tab-btn:hover{background:rgba(255,255,255,0.06);color:#e2e8f0;}

/* ============================================================
   CHAPTER CARDS (Frosted Glass)
   ============================================================ */
.chapter-card{
  background:rgba(255,255,255,0.03);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border:1px solid rgba(255,255,255,0.06);border-radius:16px;
  padding:24px;margin-bottom:16px;
  box-shadow:0 4px 24px rgba(0,0,0,0.2);
  transition:all 0.4s cubic-bezier(0.4,0,0.2,1);
  cursor:pointer;position:relative;overflow:hidden;
}
.chapter-card::before{
  content:'';position:absolute;top:-2px;left:-2px;right:-2px;bottom:-2px;
  background:linear-gradient(135deg,transparent,rgba(76,111,255,0),rgba(76,111,255,0),transparent);
  border-radius:18px;z-index:-1;opacity:0;
  transition:opacity 0.6s ease;
}
.chapter-card:hover{transform:translateY(-4px);box-shadow:0 12px 48px rgba(0,0,0,0.4),0 0 30px rgba(76,111,255,0.05);border-color:rgba(76,111,255,0.15);}
.chapter-card:hover::before{opacity:1;background:linear-gradient(135deg,transparent,rgba(76,111,255,0.15),rgba(76,111,255,0.1),transparent);}
.chapter-card.filter-hidden{
  opacity:0;transform:scale(0.95) translateY(10px);pointer-events:none;
  max-height:0;padding:0 24px;margin:0;border-width:0;overflow:hidden;
}
.chapter-card.card-open{
  border-color:rgba(76,111,255,0.25);
  box-shadow:0 8px 40px rgba(76,111,255,0.1),0 0 60px rgba(76,111,255,0.04);
}
.chapter-card.card-open::before{
  opacity:1;
  background:linear-gradient(135deg,transparent,rgba(76,111,255,0.08),rgba(76,111,255,0.06),transparent);
}
.card-header{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;}
.card-info{flex:1;min-width:0;}
.card-num{font-size:0.72em;color:rgba(255,255,255,0.3);font-weight:600;letter-spacing:0.5px;margin-bottom:2px;}
.nc-title{font-size:1.2em;font-weight:700;color:#e2e8f0;line-height:1.4;}
.card-preview{font-size:0.82em;color:rgba(255,255,255,0.4);margin-top:4px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-tags{display:flex;gap:5px;flex-wrap:wrap;margin-top:8px;}
.card-tag{padding:2px 10px;border-radius:999px;font-size:0.68em;font-weight:500;}
.card-tag.structure{background:rgba(76,111,255,0.15);color:#B8C4FF;}
.card-tag.thermo{background:rgba(76,111,255,0.15);color:#B8C4FF;}
.card-tag.phys{background:rgba(76,111,255,0.15);color:#B8C4FF;}
.card-tag.material{background:rgba(125,211,252,0.15);color:#93c5fd;}
.card-tag.prep{background:rgba(74,222,128,0.15);color:#86efac;}
.card-tag.ec-basic{background:rgba(125,211,252,0.15);color:#93c5fd;}
.card-tag.ec-theory{background:rgba(76,111,255,0.15);color:#B8C4FF;}
.card-tag.ec-li{background:rgba(76,111,255,0.15);color:#B8C4FF;}
.card-tag.ec-exp{background:rgba(251,113,133,0.15);color:#fda4af;}
.card-tag.frontier{background:rgba(74,222,128,0.15);color:#86efac;}
.card-expand-btn{
  width:32px;height:32px;border-radius:50%;border:1px solid rgba(255,255,255,0.08);
  background:rgba(255,255,255,0.04);color:rgba(255,255,255,0.4);
  cursor:pointer;font-size:0.85em;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  transition:all 0.3s ease;
}
.card-expand-btn:hover{background:rgba(76,111,255,0.15);border-color:rgba(76,111,255,0.3);color:#B8C4FF;}
.card-expand-btn.open{transform:rotate(180deg);background:rgba(76,111,255,0.15);color:#B8C4FF;border-color:rgba(76,111,255,0.3);}

/* Card body accordion */
.card-body{max-height:0;overflow:hidden;transition:max-height 0.5s cubic-bezier(0.4,0,0.2,1),opacity 0.3s ease;opacity:0;}
.card-body.open{max-height:50000px;opacity:1;}
.card-body-inner{padding-top:20px;border-top:1px solid rgba(255,255,255,0.06);margin-top:16px;}

/* Content styles */
.card-body h3{font-size:1.08em;color:#B8C4FF;margin:20px 0 8px;font-weight:700;padding:6px 12px;background:rgba(76,111,255,0.08);border-radius:8px;border-left:3px solid #4C6FFF;cursor:pointer;display:flex;align-items:center;justify-content:space-between;user-select:none;transition:all 0.3s ease;}
.card-body h3:hover{background:rgba(76,111,255,0.12);}
.card-body h3::after{content:'▾';font-size:0.7em;transition:transform 0.3s ease;opacity:0.4;}
.card-body h3.collapsed::after{transform:rotate(-90deg);}
.card-body h4{font-size:1em;color:#B8C4FF;margin:14px 0 4px;font-weight:600;}
.card-body p{margin:6px 0;text-align:justify;color:rgba(255,255,255,0.8);font-size:0.92em;line-height:1.75;}
.card-body ul,.card-body ol{padding-left:20px;margin:6px 0;}
.card-body li{margin:3px 0;color:rgba(255,255,255,0.75);font-size:0.9em;}
.card-body .collapse-content,
.fullpage-content .card-body-inner .collapse-content{
  overflow:hidden;transition:max-height 0.4s ease;
}
.card-body table{width:100%;border-collapse:collapse;margin:10px 0;font-size:0.82em;border-radius:8px;overflow:hidden;}
.card-body th{background:rgba(76,111,255,0.15);color:#B8C4FF;padding:8px 10px;text-align:left;font-weight:600;font-size:0.82em;}
.card-body td{padding:6px 10px;border-bottom:1px solid rgba(255,255,255,0.04);color:rgba(255,255,255,0.7);}
.card-body tr:nth-child(even) td{background:rgba(255,255,255,0.02);}

/* Callout boxes */
.callout{padding:12px 16px;margin:10px 0;border-radius:10px;font-size:0.88em;line-height:1.65;border-left:4px solid;}
.callout-xiaowan{background:rgba(125,211,252,0.08);border-left-color:#7B96FF;}
.callout-note{background:rgba(74,222,128,0.08);border-left-color:#4ade80;}
.callout-warn{background:rgba(251,113,133,0.08);border-left-color:#fb7185;}
.callout-think{background:rgba(76,111,255,0.08);border:1px dashed rgba(76,111,255,0.3);border-left:4px solid #4C6FFF;}
.callout-ec{background:rgba(125,211,252,0.06);border-left-color:#7B96FF;}
.callout-concept{background:rgba(76,111,255,0.06);border-left-color:#8FA3FF;}
.callout-beginner{background:rgba(76,111,255,0.08);border-left-color:#8FA3FF;}

/* Chapter transition */
.chapter-transition{margin:14px 0 6px;padding:8px 12px;background:rgba(76,111,255,0.06);border-radius:8px;font-size:0.82em;color:rgba(255,255,255,0.5);text-align:center;border:1px solid rgba(76,111,255,0.1);}

/* Glossary */
.gloss{position:relative;cursor:help;font-weight:600;color:#7B96FF;border-bottom:1.5px dotted #7B96FF;transition:color 0.2s;}
.gloss:hover{color:#7B96FF;}
.gloss::after{content:attr(data-def);position:absolute;bottom:calc(100% + 10px);left:50%;transform:translateX(-50%);background:rgba(20,20,30,0.95);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);color:#e2e8f0;padding:8px 14px;border-radius:10px;font-size:0.82em;font-weight:400;white-space:normal;min-width:200px;max-width:360px;width:max-content;z-index:5000;border:1px solid rgba(255,255,255,0.1);box-shadow:0 8px 32px rgba(0,0,0,0.4);pointer-events:none;opacity:0;transition:opacity 0.25s ease,transform 0.25s ease;transform-origin:bottom center;transform:translateX(-50%) translateY(6px);text-align:left;line-height:1.5;}
.gloss:hover::after{opacity:1;transform:translateX(-50%) translateY(0);}

/* Formula box */
.formula-box{background:rgba(76,111,255,0.06);border:1px solid rgba(255,255,255,0.06);border-radius:10px;padding:14px 18px;margin:10px 0;font-family:'Latin Modern Math','Cambria Math','STIX Two Math','Times New Roman',serif;font-size:0.95em;text-align:center;position:relative;cursor:pointer;transition:all 0.3s ease;white-space:pre-wrap;color:#e2e8f0;}
.formula-box:hover{border-color:rgba(76,111,255,0.3);box-shadow:0 4px 20px rgba(76,111,255,0.05);}
.formula-box .f-copy{position:absolute;top:6px;right:6px;background:rgba(76,111,255,0.3);color:#e2e8f0;border:none;border-radius:4px;padding:2px 7px;font-size:0.7em;cursor:pointer;opacity:0;transition:opacity 0.2s;}
.formula-box:hover .f-copy{opacity:1;}
.formula-box .f-expand{display:none;margin-top:10px;text-align:left;font-family:-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC','Microsoft YaHei',sans-serif;font-size:0.84em;line-height:1.65;}
.formula-box.expanded .f-expand{display:block;}
.formula-box .f-expand .f-tab{display:inline-block;padding:3px 10px;margin:0 3px 6px 0;border-radius:12px;font-size:0.76em;cursor:pointer;background:rgba(255,255,255,0.04);border:1px solid rgba(255,255,255,0.08);transition:all 0.2s;color:rgba(255,255,255,0.5);}
.formula-box .f-expand .f-tab.active{background:rgba(76,111,255,0.2);color:#B8C4FF;border-color:rgba(76,111,255,0.3);}
.formula-box .f-expand .f-panel{display:none;padding:6px 0;color:rgba(255,255,255,0.7);}
.formula-box .f-expand .f-panel.active{display:block;}

/* Feynman grid */
.feynman-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:16px 0;}
.feynman-card{background:rgba(76,111,255,0.06);backdrop-filter:none;-webkit-backdrop-filter:none;border:1px solid rgba(76,111,255,0.15);border-radius:10px;padding:14px;transition:all 0.3s ease;}
.feynman-card:hover{background:rgba(76,111,255,0.1);border-color:rgba(76,111,255,0.25);transform:translateY(-2px);}
.feynman-card h5{font-size:0.82em;display:flex;align-items:center;gap:5px;margin-bottom:6px;color:#B8C4FF;}
.feynman-card p{font-size:0.78em !important;color:rgba(255,255,255,0.55) !important;margin:0 !important;}

/* Quiz */
.quiz-block{background:rgba(255,255,255,0.03);border:1px solid rgba(255,255,255,0.06);border-radius:10px;padding:14px 16px;margin:12px 0;}
.quiz-block h5{color:#B8C4FF;margin:0 0 4px;font-size:0.85em;display:flex;align-items:center;gap:5px;}
.quiz-q{font-weight:600;margin:4px 0;font-size:0.9em;color:#e2e8f0;}
.quiz-options{display:flex;flex-direction:column;gap:4px;margin:4px 0;}
.quiz-opt{padding:7px 12px;border:1.5px solid rgba(255,255,255,0.08);border-radius:20px;cursor:pointer;background:rgba(255,255,255,0.03);transition:all 0.2s;font-size:0.85em;display:flex;align-items:center;gap:5px;color:rgba(255,255,255,0.7);}
.quiz-opt:hover{border-color:rgba(76,111,255,0.3);background:rgba(76,111,255,0.06);}
.quiz-opt.correct{border-color:#4ade80;background:rgba(74,222,128,0.1);color:#86efac;}
.quiz-opt.wrong{border-color:#fb7185;background:rgba(251,113,133,0.1);color:#fda4af;}
.quiz-opt.disabled{pointer-events:none;opacity:0.7;}
.quiz-feedback{margin-top:6px;padding:6px 10px;border-radius:6px;display:none;font-size:0.85em;}
.quiz-feedback.show{display:block;}
.quiz-feedback.correct{background:rgba(74,222,128,0.08);color:#86efac;}
.quiz-feedback.wrong{background:rgba(251,113,133,0.08);color:#fda4af;}

/* Partition */
.partition{text-align:center;padding:20px 0;margin:10px 0 20px;position:relative;}
.partition::before{content:'';position:absolute;top:50%;left:10%;right:10%;height:1px;background:linear-gradient(90deg,transparent,rgba(76,111,255,0.3),transparent);}
.partition h2{display:inline-block;font-size:1.1em;padding:6px 20px;background:rgba(76,111,255,0.1);border:1px solid rgba(76,111,255,0.2);border-radius:999px;color:#B8C4FF;position:relative;}

/* Footer */
.site-footer{text-align:center;padding:24px;margin-top:20px;border-top:1px solid rgba(255,255,255,0.04);color:rgba(255,255,255,0.3);font-size:0.78em;}

/* Back to top */
#back-top{position:fixed;bottom:28px;right:28px;width:44px;height:44px;border-radius:50%;border:none;background:linear-gradient(135deg,#4C6FFF,#4C6FFF);color:#fff;font-size:1.2em;cursor:pointer;z-index:9998;opacity:0;transform:translateY(20px);transition:all 0.3s ease;box-shadow:0 4px 20px rgba(76,111,255,0.3);display:flex;align-items:center;justify-content:center;}
#back-top.visible{opacity:1;transform:translateY(0);}
#back-top:hover{transform:translateY(-3px) scale(1.05);box-shadow:0 6px 30px rgba(76,111,255,0.4);}

/* Responsive */
@media (max-width:768px){
  .navbar-inner{padding:8px 12px;}
  .navbar-logo{font-size:0.9em;}
  .pill-nav-wrap{padding:4px 12px 8px;justify-content:flex-start;}
  .pill-btn{font-size:0.75em;padding:5px 12px;}
  .homepage h1{font-size:1.5em;}
  .module-cards{grid-template-columns:1fr;max-width:400px;}
  .chapter-card{padding:16px;border-radius:12px;}
  .nc-title{font-size:1.05em;}
  .feynman-grid{grid-template-columns:1fr;}
  .main-content{padding:12px 10px 30px 50px;}
  .search-section{padding:0 12px 8px;}
  .card-body table{font-size:0.72em;}
  .card-body th,.card-body td{padding:4px 6px;}
  .progress-stats{font-size:0.7em;gap:6px;}
  .progress-bar-mini{width:50px;}
}
@media (max-width:480px){
  .navbar-logo{font-size:0.8em;}
  .pill-btn{padding:4px 10px;font-size:0.7em;}
  .homepage h1{font-size:1.25em;}
  .nc-title{font-size:0.95em;}
  .gloss::after{max-width:220px;font-size:0.72em;}
  .progress-stats{font-size:0.65em;}
  .progress-bar-mini{width:36px;}
  #notesRoot{padding-top:100px;}
  .tab-bar{top:auto;bottom:0;left:0;right:0;z-index:9999;
    flex-direction:row;border-radius:12px 12px 0 0;
    border:1px solid rgba(255,255,255,0.06);border-bottom:none;
    padding:4px 8px;justify-content:center;
  }
  .tab-btn{padding:6px 12px;writing-mode:horizontal-tb;font-size:0.72em;}
  .main-content{padding:12px 8px 30px 12px;}
}
/* ============================================================
   LIGHT THEME OVERRIDES
   ============================================================ */
[data-theme="light"] #notesRoot{
  background:#f5f7fa;color:#1e293b;
}
[data-theme="light"] .navbar{
  background:rgba(245,247,250,0.9);border-bottom-color:rgba(0,0,0,0.08);
}
[data-theme="light"] .navbar-logo{
  background:linear-gradient(135deg,#2E4FD7,#2E4FD7);
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;
  background-clip:text;
}
[data-theme="light"] .pill-btn{
  background:rgba(0,0,0,0.04);color:rgba(0,0,0,0.5);border-color:rgba(0,0,0,0.08);
}
[data-theme="light"] .pill-btn:hover{background:rgba(0,0,0,0.06);color:#1e293b;border-color:rgba(0,0,0,0.12);}
[data-theme="light"] .pill-btn.active{
  background:linear-gradient(135deg,rgba(76,111,255,0.12),rgba(76,111,255,0.1));
  border-color:rgba(76,111,255,0.25);color:#2E4FD7;}
[data-theme="light"] .search-box input{
  background:rgba(0,0,0,0.04);color:#1e293b;border-color:rgba(0,0,0,0.08);
}
[data-theme="light"] .search-box input:focus{border-color:rgba(76,111,255,0.3);background:rgba(76,111,255,0.04);}
[data-theme="light"] .search-box input::placeholder{color:rgba(0,0,0,0.25);}
[data-theme="light"] .search-box::before{opacity:0.4;}
[data-theme="light"] .chapter-card{
  background:rgba(255,255,255,0.7);border-color:rgba(0,0,0,0.06);
  box-shadow:0 2px 12px rgba(0,0,0,0.04);
}
[data-theme="light"] .chapter-card:hover{
  border-color:rgba(76,111,255,0.2);box-shadow:0 8px 32px rgba(76,111,255,0.08);
}
[data-theme="light"] .chapter-card.card-open{
  border-color:rgba(76,111,255,0.2);box-shadow:0 8px 32px rgba(76,111,255,0.06);
}
[data-theme="light"] .nc-title{color:#1e293b;}
[data-theme="light"] .card-preview{color:rgba(0,0,0,0.4);}
[data-theme="light"] .card-num{color:rgba(0,0,0,0.25);}
[data-theme="light"] .card-expand-btn{
  background:rgba(0,0,0,0.03);color:rgba(0,0,0,0.3);border-color:rgba(0,0,0,0.08);
}
[data-theme="light"] .card-expand-btn:hover{background:rgba(76,111,255,0.08);color:#2E4FD7;border-color:rgba(76,111,255,0.2);}
[data-theme="light"] .card-body-inner{border-top-color:rgba(0,0,0,0.06);}
[data-theme="light"] .tab-bar{background:rgba(255,255,255,0.8);border-color:rgba(0,0,0,0.06);}
[data-theme="light"] .tab-btn{color:rgba(0,0,0,0.4);}
[data-theme="light"] .tab-btn.active{background:rgba(76,111,255,0.08);border-color:rgba(76,111,255,0.2);color:#2E4FD7;}
[data-theme="light"] .tab-btn:hover{background:rgba(0,0,0,0.04);color:#1e293b;}
[data-theme="light"] .home-btn{background:rgba(76,111,255,0.08);color:#2E4FD7;border-color:rgba(76,111,255,0.2);}
[data-theme="light"] .theme-btn{background:rgba(0,0,0,0.04);color:rgba(0,0,0,0.5);border-color:rgba(0,0,0,0.08);}
[data-theme="light"] .theme-btn:hover{background:rgba(0,0,0,0.08);}
[data-theme="light"] .progress-stats{color:rgba(0,0,0,0.4);}
[data-theme="light"] .progress-bar-mini{background:rgba(0,0,0,0.08);}
[data-theme="light"] .progress-bar-mini-fill{background:linear-gradient(90deg,#2E4FD7,#2E4FD7);}
[data-theme="light"] .homepage .subtitle{color:rgba(0,0,0,0.3);}
[data-theme="light"] .homepage-intro p{color:rgba(0,0,0,0.45);}
[data-theme="light"] .callout-xiaowan{background:rgba(125,211,252,0.06);}
[data-theme="light"] .callout-note{background:rgba(22,163,74,0.06);}
[data-theme="light"] .callout-warn{background:rgba(220,38,38,0.04);}
[data-theme="light"] .callout-think{background:rgba(76,111,255,0.04);}
[data-theme="light"] .callout-concept{background:rgba(76,111,255,0.04);}
[data-theme="light"] .callout-ec{background:rgba(125,211,252,0.06);}
[data-theme="light"] .callout-beginner{background:rgba(76,111,255,0.04);}
[data-theme="light"] .chapter h3{background:rgba(76,111,255,0.06);color:#2E4FD7;border-left-color:#4C6FFF;}
[data-theme="light"] .chapter h3:hover{background:rgba(76,111,255,0.1);}
[data-theme="light"] .chapter th{background:#4C6FFF;color:#fff;}
[data-theme="light"] .chapter tr:nth-child(even) td{background:rgba(0,0,0,0.02);}
[data-theme="light"] .chapter td{border-bottom-color:rgba(0,0,0,0.04);}
[data-theme="light"] .formula-box{background:rgba(76,111,255,0.04);border-color:rgba(76,111,255,0.12);}
[data-theme="light"] .feynman-card{background:rgba(76,111,255,0.04);border-color:rgba(76,111,255,0.12);}
[data-theme="light"] .feynman-card p{color:rgba(0,0,0,0.55) !important;}
[data-theme="light"] .quiz-block{background:rgba(0,0,0,0.02);}
[data-theme="light"] .quiz-opt{background:#fff;border-color:rgba(0,0,0,0.1);color:#1e293b;}
[data-theme="light"] .quiz-opt:hover{border-color:rgba(76,111,255,0.3);}
[data-theme="light"] .gloss{color:#0ea5e9;}
[data-theme="light"] .chapter h2{color:#4C6FFF;}
[data-theme="light"] .site-footer{color:rgba(0,0,0,0.3);}
[data-theme="light"] .chapter-transition{background:rgba(76,111,255,0.04);color:rgba(0,0,0,0.35);border-color:rgba(76,111,255,0.1);}
[data-theme="light"] .toc-item{color:rgba(0,0,0,0.6);border-color:rgba(0,0,0,0.04);}
[data-theme="light"] .toc-item:hover{background:rgba(76,111,255,0.04);}
[data-theme="light"] .toc-module-title{color:#4C6FFF;}
[data-theme="light"] a{color:#4C6FFF;}
[data-theme="light"] ::-webkit-scrollbar-thumb{background:rgba(0,0,0,0.15);}
[data-theme="light"] .exam-section h3{color:#4C6FFF;}
[data-theme="light"] .exam-section h4{color:#2E4FD7;}
[data-theme="light"] .mind-map{background:rgba(0,0,0,0.02);}
[data-theme="light"] .mind-map .mm-node{background:#fff;border-color:#0ea5e9;}
[data-theme="light"] .mind-map .mm-node.center{background:#0ea5e9;color:#fff;}
[data-theme="light"] .chapter h4{color:#2E4FD7;}
[data-theme="light"] .chapter h2{color:#4C6FFF;}
[data-theme="light"] .chapter-transition{background:rgba(76,111,255,0.04);color:rgba(0,0,0,0.35);border-color:rgba(76,111,255,0.1);}

/* ============================================================
   FULLPAGE READING VIEW
   ============================================================ */
.fullpage-view{
  position:fixed;top:0;left:0;right:0;bottom:0;z-index:20000;
  background:var(--bg,#0a0a0f);overflow-y:auto;overflow-x:hidden;
  display:none;flex-direction:column;
  animation:fpFadeIn 0.3s ease;
}
[data-theme="light"] .fullpage-view{background:var(--bg,#f5f7fa);}
@keyframes fpFadeIn{from{opacity:0}to{opacity:1}}

.fullpage-header{
  position:sticky;top:0;z-index:10;
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 24px;
  background:rgba(10,10,15,0.92);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
  border-bottom:1px solid rgba(255,255,255,0.06);
  flex-shrink:0;
}
[data-theme="light"] .fullpage-header{
  background:rgba(245,247,250,0.92);
  border-bottom-color:rgba(0,0,0,0.08);
}
.fp-back-btn{
  display:flex;align-items:center;gap:6px;
  padding:8px 18px;border-radius:999px;border:1px solid rgba(76,111,255,0.25);
  background:rgba(76,111,255,0.1);color:#B8C4FF;cursor:pointer;
  font-size:0.85em;font-weight:600;transition:all 0.3s ease;
}
.fp-back-btn:hover{background:rgba(76,111,255,0.2);transform:translateX(-2px);}
[data-theme="light"] .fp-back-btn{background:rgba(76,111,255,0.08);color:#2E4FD7;border-color:rgba(76,111,255,0.2);}
.fp-header-center{
  display:flex;align-items:center;gap:12px;font-size:0.88em;
}
.fp-header-center .fp-chapter-num{
  color:rgba(255,255,255,0.4);font-weight:600;
}
[data-theme="light"] .fp-header-center .fp-chapter-num{color:rgba(0,0,0,0.4);}
.fp-header-center .fp-chapter-title{
  color:#e2e8f0;font-weight:700;
}
[data-theme="light"] .fp-header-center .fp-chapter-title{color:#1e293b;}
.fp-header-right{
  display:flex;align-items:center;gap:8px;
}
.fp-settings-btn{
  width:36px;height:36px;border-radius:50%;
  border:1px solid rgba(255,255,255,0.1);
  background:rgba(255,255,255,0.05);color:rgba(255,255,255,0.6);
  cursor:pointer;font-size:1em;display:flex;align-items:center;justify-content:center;
  transition:all 0.3s ease;
}
.fp-settings-btn:hover{background:rgba(76,111,255,0.15);border-color:rgba(76,111,255,0.3);color:#B8C4FF;}
[data-theme="light"] .fp-settings-btn{background:rgba(0,0,0,0.04);color:rgba(0,0,0,0.4);border-color:rgba(0,0,0,0.08);}

/* Fullpage content area */
.fullpage-content-wrap{
  flex:1;display:flex;flex-direction:column;align-items:center;
  padding:32px 24px 120px;
}
.fullpage-content{
  width:100%;max-width:var(--fp-width,900px);
  transition:max-width 0.3s ease;
}
.fullpage-content .card-body-inner{
  border-top:none;margin-top:0;padding-top:0;
  font-size:var(--fp-font-size,16px);
  line-height:var(--fp-line-height,1.85);
}
.fullpage-content .card-body-inner *{
  font-size:inherit;line-height:inherit;
}
.fullpage-content .card-body-inner p{
  color:rgba(255,255,255,0.85);margin:8px 0;
}
[data-theme="light"] .fullpage-content .card-body-inner p{color:rgba(0,0,0,0.75);}
.fullpage-content .card-body-inner h3{
  font-size:calc(var(--fp-font-size,16px) * 1.25);
  margin:28px 0 12px;
}
.fullpage-content .card-body-inner h4{
  font-size:calc(var(--fp-font-size,16px) * 1.1);
}
.fullpage-content .card-body-inner table{
  font-size:calc(var(--fp-font-size,16px) * 0.9);
}
.fullpage-content .card-body-inner li{
  font-size:var(--fp-font-size,16px);
  line-height:var(--fp-line-height,1.85);
}
.fullpage-content .card-body-inner .callout{
  font-size:calc(var(--fp-font-size,16px) * 0.95);
}

/* === FULLPAGE: Feynman grid/card overrides === */
.fullpage-content .card-body-inner .feynman-grid{
  display:grid;grid-template-columns:1fr 1fr;gap:20px;padding:10px;margin:20px 0;
}
.fullpage-content .card-body-inner .feynman-card{
  background:rgba(76,111,255,0.08);backdrop-filter:none;-webkit-backdrop-filter:none;
  border:1px solid rgba(76,111,255,0.2);border-radius:12px;
  padding:16px 14px;box-shadow:0 2px 12px rgba(0,0,0,0.15);overflow:visible;
}
.fullpage-content .card-body-inner .feynman-card h5{
  font-size:calc(var(--fp-font-size,16px) * 0.85);margin-bottom:8px;color:#B8C4FF;
}
.fullpage-content .card-body-inner .feynman-card p{
  font-size:calc(var(--fp-font-size,16px) * 0.82) !important;color:rgba(255,255,255,0.7) !important;margin:0 !important;line-height:1.6 !important;
}
[data-theme="light"] .fullpage-content .card-body-inner .feynman-card{
  background:rgba(76,111,255,0.05);border-color:rgba(76,111,255,0.15);
}
[data-theme="light"] .fullpage-content .card-body-inner .feynman-card p{
  color:rgba(0,0,0,0.65) !important;
}
[data-theme="light"] .fullpage-content .card-body-inner .feynman-card h5{color:#2E4FD7;}

/* === FULLPAGE: Unified spacing === */
.fullpage-content .card-body-inner{
  padding-top:20px;
}
.fullpage-content .card-body-inner h2{
  font-size:calc(var(--fp-font-size,16px) * 1.35);margin:28px 0 16px;color:#B8C4FF;font-weight:800;
}
.fullpage-content .card-body-inner h3{
  font-size:calc(var(--fp-font-size,16px) * 1.2);margin:24px 0 16px;padding:8px 14px;border-radius:8px;
  background:rgba(76,111,255,0.08);border-left:3px solid #4C6FFF;color:#B8C4FF;
}
.fullpage-content .card-body-inner h4{
  font-size:calc(var(--fp-font-size,16px) * 1.08);margin:20px 0 10px;color:#8FA3FF;font-weight:600;
}
.fullpage-content .card-body-inner p{
  color:rgba(255,255,255,0.85);margin:12px 0;line-height:var(--fp-line-height,1.85);
}
.fullpage-content .card-body-inner ul,
.fullpage-content .card-body-inner ol{
  padding-left:24px;margin:12px 0;
}
.fullpage-content .card-body-inner li{
  margin:8px 0;line-height:var(--fp-line-height,1.85);
}
.fullpage-content .card-body-inner table{
  margin:16px 0;font-size:calc(var(--fp-font-size,16px) * 0.88);width:100%;
  border-collapse:collapse;border-radius:8px;overflow:hidden;
}
.fullpage-content .card-body-inner th{
  background:rgba(76,111,255,0.15);color:#B8C4FF;padding:10px 12px;text-align:left;font-weight:600;
}
.fullpage-content .card-body-inner td{
  padding:8px 12px;border-bottom:1px solid rgba(255,255,255,0.05);color:rgba(255,255,255,0.7);
}
.fullpage-content .card-body-inner tr:nth-child(even) td{background:rgba(255,255,255,0.02);}

/* === FULLPAGE: Quiz block spacing === */
.fullpage-content .card-body-inner .quiz-block{
  margin:16px 0;padding:16px 18px;
}
.fullpage-content .card-body-inner .quiz-block h5{margin-bottom:6px;}
.fullpage-content .card-body-inner .quiz-q{margin:6px 0;}
.fullpage-content .card-body-inner .quiz-options{gap:6px;margin:6px 0;}
.fullpage-content .card-body-inner .quiz-opt{padding:8px 14px;}

/* === FULLPAGE: Formula box & callout === */
.fullpage-content .card-body-inner .formula-box{
  margin:16px 0;padding:16px 20px;
}

/* === FULLPAGE: Exam section (bottom banner) === */
.fullpage-content .card-body-inner .exam-section{
  margin:24px 0 10px;padding-bottom:10px;
}
.fullpage-content .card-body-inner .exam-section h3{
  margin:28px 0 14px !important;
}
.fullpage-content .card-body-inner .exam-section h4{
  margin:14px 0 8px !important;
}

/* === FULLPAGE: Chapter transition === */
.fullpage-content .card-body-inner .chapter-transition{
  margin:18px 0 10px;padding:10px 16px;
}

/* Fullpage nav (prev/next) */
.fullpage-nav{
  display:flex;align-items:center;justify-content:space-between;
  gap:16px;margin-top:40px;padding-top:24px;
  border-top:1px solid rgba(255,255,255,0.06);
  width:100%;max-width:var(--fp-width,900px);
}
[data-theme="light"] .fullpage-nav{border-top-color:rgba(0,0,0,0.08);}
.fp-nav-btn{
  display:flex;align-items:center;gap:8px;
  padding:10px 20px;border-radius:999px;
  border:1px solid rgba(255,255,255,0.08);
  background:rgba(255,255,255,0.03);color:#e2e8f0;
  cursor:pointer;font-size:0.88em;font-weight:600;
  transition:all 0.3s ease;user-select:none;
  flex:1;max-width:280px;
}
.fp-nav-btn:hover{background:rgba(76,111,255,0.12);border-color:rgba(76,111,255,0.3);color:#B8C4FF;transform:translateY(-1px);}
.fp-nav-btn:active{transform:scale(0.97);}
.fp-nav-btn.next{justify-content:flex-end;text-align:right;}
.fp-nav-btn.disabled{opacity:0.3;pointer-events:none;cursor:default;}
[data-theme="light"] .fp-nav-btn{background:rgba(0,0,0,0.02);color:#1e293b;border-color:rgba(0,0,0,0.08);}
.fp-nav-btn .fp-nav-dir{font-size:0.75em;color:rgba(255,255,255,0.35);}
[data-theme="light"] .fp-nav-btn .fp-nav-dir{color:rgba(0,0,0,0.35);}
.fp-nav-btn .fp-nav-title{font-size:0.82em;opacity:0.7;max-width:160px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.fp-nav-btn .fp-nav-arrow{font-size:1.2em;}
.fp-nav-spacer{flex:1;}

/* Settings panel */
.settings-overlay{
  position:fixed;top:0;left:0;right:0;bottom:0;z-index:30000;
  background:rgba(0,0,0,0.5);backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px);
  display:none;align-items:center;justify-content:center;
  animation:fpFadeIn 0.2s ease;
}
.settings-overlay.show{display:flex;}
.settings-panel{
  background:rgba(20,20,30,0.95);backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px);
  border:1px solid rgba(255,255,255,0.08);
  border-radius:16px;padding:28px 32px;
  width:420px;max-width:90vw;max-height:80vh;overflow-y:auto;
  box-shadow:0 20px 60px rgba(0,0,0,0.5);
}
[data-theme="light"] .settings-panel{background:rgba(255,255,255,0.95);border-color:rgba(0,0,0,0.1);}
.settings-panel h3{
  font-size:1.15em;font-weight:800;color:#e2e8f0;
  margin-bottom:20px;display:flex;align-items:center;justify-content:space-between;
}
[data-theme="light"] .settings-panel h3{color:#1e293b;}
.settings-panel .close-settings{
  width:30px;height:30px;border-radius:50%;border:none;
  background:rgba(255,255,255,0.06);color:rgba(255,255,255,0.4);
  cursor:pointer;font-size:0.85em;display:flex;align-items:center;justify-content:center;
  transition:all 0.3s ease;
}
.settings-panel .close-settings:hover{background:rgba(251,113,133,0.2);color:#fda4af;}
[data-theme="light"] .settings-panel .close-settings{background:rgba(0,0,0,0.05);color:rgba(0,0,0,0.4);}
.settings-group{margin-bottom:18px;}
.settings-group label{
  display:block;font-size:0.82em;font-weight:600;color:rgba(255,255,255,0.6);
  margin-bottom:8px;text-transform:uppercase;letter-spacing:0.5px;
}
[data-theme="light"] .settings-group label{color:rgba(0,0,0,0.5);}
.settings-options{display:flex;gap:6px;flex-wrap:wrap;}
.settings-opt{
  padding:6px 16px;border-radius:999px;border:1px solid rgba(255,255,255,0.08);
  background:rgba(255,255,255,0.03);color:rgba(255,255,255,0.5);
  cursor:pointer;font-size:0.82em;font-weight:500;
  transition:all 0.3s ease;user-select:none;
}
.settings-opt:hover{background:rgba(76,111,255,0.08);border-color:rgba(76,111,255,0.2);color:#B8C4FF;}
.settings-opt.active{
  background:rgba(76,111,255,0.18);border-color:rgba(76,111,255,0.3);
  color:#B8C4FF;font-weight:600;
  box-shadow:0 0 12px rgba(76,111,255,0.1);
}
[data-theme="light"] .settings-opt{background:rgba(0,0,0,0.03);color:rgba(0,0,0,0.5);border-color:rgba(0,0,0,0.08);}
[data-theme="light"] .settings-opt:hover{background:rgba(76,111,255,0.06);color:#2E4FD7;border-color:rgba(76,111,255,0.2);}
[data-theme="light"] .settings-opt.active{background:rgba(76,111,255,0.12);color:#2E4FD7;border-color:rgba(76,111,255,0.25);}
.settings-reset{
  display:block;width:100%;margin-top:16px;padding:8px;
  border-radius:999px;border:1px solid rgba(255,255,255,0.06);
  background:transparent;color:rgba(255,255,255,0.35);
  cursor:pointer;font-size:0.78em;transition:all 0.3s ease;
}
.settings-reset:hover{background:rgba(251,113,133,0.1);border-color:rgba(251,113,133,0.3);color:#fda4af;}
[data-theme="light"] .settings-reset{color:rgba(0,0,0,0.3);border-color:rgba(0,0,0,0.06);}

/* 2026.08 首页 Hero（借鉴 Moonshot 主页：全屏场景 + 底部渐变融合 + 大文字逐条入场） */
body[data-page="home"] #app main{max-width:100%;padding:0 0 70px}
.hero{position:relative;height:100vh;height:100svh;min-height:660px;overflow:hidden;
  display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center}
.hero-fallback{position:absolute;inset:0;z-index:0;
  background:
   radial-gradient(900px 420px at 50% 4%,rgba(76,111,255,.24),transparent 70%),
   radial-gradient(500px 280px at 14% 22%,rgba(125,211,252,.12),transparent 65%),
   radial-gradient(460px 260px at 88% 26%,rgba(251,146,60,.11),transparent 65%),
   linear-gradient(135deg,rgba(76,111,255,.16),rgba(13,20,32,.60))}
.hero-scene{position:absolute;inset:0;z-index:1;opacity:0;transition:opacity .6s ease-out;pointer-events:none}
.hero-scene.scene-ready{opacity:1}
.hero-canvas{display:block;width:100%;height:100%}
.hero-overlay{position:absolute;left:0;right:0;bottom:0;height:46%;z-index:2;pointer-events:none;
  background:linear-gradient(to top,var(--bg) 40%,transparent)}
.hero-content{position:relative;z-index:3;width:100%;max-width:920px;padding:110px 40px 70px}
.hero-logo{display:flex;justify-content:center;margin-bottom:16px;animation:heroRv .8s cubic-bezier(.22,1,.36,1) backwards}
.hero-logo .logo-ic{width:58px;height:58px;color:var(--acc);filter:drop-shadow(0 0 16px rgba(76,111,255,.45))}
.hero-kicker{font:700 12px/1.4 "Space Grotesk",sans-serif;letter-spacing:.22em;color:var(--acc);text-transform:uppercase;
  animation:heroRvR .8s .06s cubic-bezier(.22,1,.36,1) backwards}
.hero-title{font-size:clamp(42px,8vw,80px);line-height:1.12;margin:14px 0 10px;letter-spacing:.03em;font-weight:800;
  animation:heroRv .8s .14s cubic-bezier(.22,1,.36,1) backwards}
.hero-lead{font-size:clamp(21px,3.2vw,32px);font-weight:700;letter-spacing:.02em;
  background:linear-gradient(92deg,var(--acc) 10%,#7DD3FC 90%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  animation:heroRv .8s .24s cubic-bezier(.22,1,.36,1) backwards}
.hero-desc{max-width:760px;margin:18px auto 0;color:var(--sub);font-size:15.5px;
  animation:heroRv .8s .34s cubic-bezier(.22,1,.36,1) backwards}
.hero-chips{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;margin-top:26px;
  animation:heroRv .8s .46s cubic-bezier(.22,1,.36,1) backwards}
.hc{font-size:13px;padding:6px 14px;border-radius:999px;border:1px solid var(--line2);background:var(--glass);
  backdrop-filter:blur(8px);color:var(--ink)}
.hero-stats{display:flex;justify-content:center;flex-wrap:wrap;margin-top:34px;
  animation:heroRv .8s .58s cubic-bezier(.22,1,.36,1) backwards}
.hs{min-width:130px;padding:4px 26px;border-right:1px solid var(--line2)}
.hs:last-child{border-right:0}
.hs b{display:block;font:700 26px/1.2 "Space Grotesk",sans-serif;color:var(--acc2)}
.hs span{font-size:12.5px;color:var(--sub)}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;justify-content:center;margin-top:36px;
  animation:heroRv .8s .70s cubic-bezier(.22,1,.36,1) backwards}
.hero-btn{display:inline-flex;align-items:center;gap:8px;padding:12px 26px;border-radius:999px;
  border:1px solid var(--line2);background:var(--glass);color:var(--ink);text-decoration:none;
  font-size:14.5px;font-weight:600;backdrop-filter:blur(10px);transition:.22s ease}
.hero-btn:hover{border-color:var(--acc-line);background:var(--glass2);transform:translateY(-2px)}
.hero-btn.primary{background:linear-gradient(135deg,var(--acc),#5B7DFF);border-color:transparent;color:#fff;
  box-shadow:0 10px 30px rgba(76,111,255,.35)}
.hero-btn.primary:hover{filter:brightness(1.08);transform:translateY(-2px)}
@keyframes heroRv{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:none}}
@keyframes heroRvR{from{opacity:0;transform:translateY(12px) rotate(2deg)}to{opacity:1;transform:none}}
[data-theme="light"] .hero-lead{background:linear-gradient(92deg,#3B5BDB 10%,#0284C7 90%);-webkit-background-clip:text;background-clip:text;color:transparent}
[data-theme="light"] .hero-fallback{background:
  radial-gradient(900px 420px at 50% 4%,rgba(76,111,255,.20),transparent 70%),
  radial-gradient(500px 280px at 14% 22%,rgba(2,132,199,.10),transparent 65%),
  radial-gradient(460px 260px at 88% 26%,rgba(234,88,12,.08),transparent 65%),
  linear-gradient(135deg,rgba(76,111,255,.12),rgba(255,255,255,.72))}

/* ============ 导航「更多」下拉 ============ */
.nav-more{position:relative;flex-shrink:0}
.nav-caret{font-size:9px;color:var(--dim);transition:transform .2s}
.nav-more.open .nav-caret{transform:rotate(180deg)}
.nav-more-menu{position:fixed;top:0;left:0;display:none;flex-direction:column;gap:2px;
  min-width:172px;padding:8px;border:1px solid var(--line);border-radius:14px;z-index:70;
  background:rgba(13,20,32,.92);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
  box-shadow:0 18px 50px rgba(0,0,0,.45)}
.nav-more.open .nav-more-menu{display:flex}
.nav-more-menu .nav-btn{width:100%;justify-content:flex-start;border-radius:10px}
[data-theme="light"] .nav-more-menu{background:rgba(255,255,255,.95);box-shadow:0 18px 50px rgba(15,23,42,.18)}

/* ============ 首页 Hero 关键词（可点击） ============ */
.hc{text-decoration:none;transition:.22s ease}
.hc:hover{border-color:var(--acc-line);background:var(--acc-dim);color:var(--acc);transform:translateY(-2px)}

/* ============ 首页折叠区（研究方向 / 最新发表 / 快捷入口） ============ */
.home-wrap{max-width:1180px;margin:0 auto;padding:56px 36px 20px;position:relative;z-index:3}
.hsec{margin-bottom:58px}
.hsec-head{max-width:640px;margin-bottom:26px}
.hsec-kicker{font:700 11px/1.4 "Space Grotesk",sans-serif;letter-spacing:.2em;color:var(--acc);text-transform:uppercase}
.hsec-head h3{font-size:28px;font-weight:800;margin:6px 0 8px;letter-spacing:.01em}
.hsec-head p{color:var(--sub);font-size:14px}
.dir-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.dir-card{display:flex;flex-direction:column;border:1px solid var(--line);border-radius:18px;background:var(--glass);
  overflow:hidden;text-decoration:none;color:inherit;transition:transform .25s cubic-bezier(.22,1,.36,1),border-color .25s,box-shadow .25s}
.dir-card:hover{transform:translateY(-5px);border-color:var(--acc-line);box-shadow:0 16px 40px rgba(76,111,255,.12)}
.dir-art{height:132px;display:flex;align-items:center;justify-content:center}
.dir-art .ic-svg{width:46px;height:46px;color:#fff;filter:drop-shadow(0 4px 14px rgba(0,0,0,.3))}
.art1{background:radial-gradient(420px 200px at 20% 10%,rgba(76,111,255,.55),transparent 70%),linear-gradient(135deg,#101A3A,#1B2A5E)}
.art2{background:radial-gradient(420px 200px at 80% 10%,rgba(125,211,252,.4),transparent 70%),linear-gradient(135deg,#0E1B33,#123A5E)}
.art3{background:radial-gradient(420px 200px at 50% 90%,rgba(251,146,60,.35),transparent 70%),linear-gradient(135deg,#2A1410,#5E3312)}
.dir-info{padding:18px 20px 20px}
.dir-info h4{font-size:17px;margin-bottom:8px}
.dir-info p{font-size:13.5px;color:var(--sub);line-height:1.75}
.dir-link{display:inline-block;margin-top:12px;font-size:13px;color:var(--acc);font-weight:600}
.dir-card:hover .dir-link{text-decoration:underline}
.pub-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.pub-card{display:flex;flex-direction:column;padding:20px;border:1px solid var(--line);border-radius:16px;background:var(--glass);
  text-decoration:none;color:inherit;transition:transform .22s ease,border-color .22s}
.pub-card:hover{transform:translateY(-3px);border-color:var(--acc-line)}
.pub-card h4{font-size:15.5px;line-height:1.5;margin-bottom:6px}
.pub-card .meta{font-size:11.5px;color:var(--dim);margin-bottom:10px}
.pub-card p{font-size:13px;color:var(--sub);flex:1;line-height:1.7}
.pub-go{margin-top:12px;font-size:12.5px;color:var(--acc);font-weight:600}
.home-modules a.home-module{text-decoration:none;color:inherit;display:block}
.home-modules .home-module span{color:var(--sub)}

/* ============ 页脚 ============ */
.pf-footer{width:100%;max-width:1180px;margin:20px auto 0;padding:40px 36px 0;position:relative;z-index:1;
  border-top:1px solid var(--line)}
.pf-inner{display:grid;grid-template-columns:2fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:30px}
.pf-name{display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:16px;font-weight:800}
.pf-name .logo-ic{width:26px;height:26px;color:var(--acc)}
.pf-name small{flex-basis:100%;margin-left:36px}
.pf-name small{display:block;font-size:12px;font-weight:400;color:var(--sub);margin-top:3px}
.pf-brand p{margin-top:12px;font-size:12.5px;color:var(--dim);line-height:1.8;max-width:340px}
.pf-col{display:flex;flex-direction:column;gap:9px}
.pf-col b{font-size:12px;letter-spacing:.12em;color:var(--ink);margin-bottom:4px}
.pf-col a,.pf-col span{font-size:12.5px;color:var(--sub);text-decoration:none;line-height:1.5}
.pf-col a:hover{color:var(--acc)}
.pf-bottom{border-top:1px solid var(--line);padding:16px 0 26px;font-size:11.5px;color:var(--dim);text-align:center}
@media(max-width:820px){
 .pf-inner{grid-template-columns:1fr 1fr;gap:26px}
 .dir-grid,.pub-grid{grid-template-columns:1fr}
 .home-wrap{padding:40px 20px 10px}
}
@media(max-width:560px){.pf-inner{grid-template-columns:1fr}}
.simple-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:20px;position:relative;z-index:1}
.home-modules{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.home-module{padding:18px;border:1px solid var(--line);border-radius:15px;background:var(--glass);cursor:pointer;transition:.22s ease}
.home-module:hover{transform:translateY(-3px);border-color:var(--acc-line);background:var(--glass2)}
.home-module b{display:block;margin-bottom:5px}.home-module span{font-size:12.5px;color:var(--sub)}
.basics-toolbar{position:sticky;top:74px;z-index:15;display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin:16px 0;padding:12px;background:rgba(10,14,20,.88);border:1px solid var(--line);border-radius:14px;backdrop-filter:blur(18px)}
.basics-toolbar .search{flex:1;min-width:220px}
.learn-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:15px}
.learn-card{border:1px solid var(--line);border-radius:16px;background:var(--glass);overflow:hidden;transition:.2s ease}
.learn-card:hover{border-color:var(--acc-line);transform:translateY(-2px)}
.learn-head{display:flex;gap:12px;align-items:flex-start;padding:17px 18px;cursor:pointer}
.learn-no{flex:0 0 auto;font:700 11px/1 "Space Grotesk",sans-serif;color:var(--acc);padding:7px 9px;border-radius:9px;background:var(--acc-dim)}
.learn-title{flex:1;min-width:0}.learn-title b{font-size:15px}.learn-title small{display:block;color:var(--sub);margin-top:4px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.learn-card.open .learn-head{background:var(--acc-dim)}
.learn-body{display:none;padding:4px 18px 19px;color:var(--sub);line-height:1.85;border-top:1px solid var(--line)}
.learn-card.open .learn-body{display:block;animation:pagein .24s ease}
.learn-content{padding-top:14px;white-space:pre-wrap}
.learn-actions{display:flex;gap:8px;margin-top:15px}
.editor-toolbar{display:flex;gap:7px;flex-wrap:wrap;padding:10px;border:1px solid var(--line);border-bottom:0;border-radius:10px 10px 0 0;background:var(--glass)}
.editor-toolbar select,.editor-toolbar input,.editor-toolbar button{height:34px;border:1px solid var(--line2);background:var(--glass);color:var(--ink);border-radius:8px;padding:0 9px;font-family:inherit}
.rich-editor{min-height:190px;border:1px solid var(--line2);border-radius:0 0 10px 10px;padding:14px;outline:none;background:rgba(13,20,32,.5);overflow:auto}
.article-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:15px}
.article-card{padding:20px;border:1px solid var(--line);border-radius:16px;background:var(--glass)}
.article-card h3{font-size:17px}.article-card .meta{font-size:11.5px;color:var(--dim);margin:5px 0 10px}.article-card p{color:var(--sub);white-space:pre-wrap}
.empty-state{grid-column:1/-1;padding:42px;text-align:center;border:1px dashed var(--line2);border-radius:16px;color:var(--sub)}
[data-theme="light"] .basics-toolbar{background:rgba(246,248,252,.9)}
[data-theme="light"] .rich-editor{background:#fff}
@media(max-width:820px){.home-modules,.learn-grid,.article-grid{grid-template-columns:1fr}.hero{min-height:580px}.hero-content{padding:96px 20px 56px}.hero-title{font-size:36px}.hero-lead{font-size:21px}.hero-desc{font-size:14px}.hs{min-width:104px;padding:4px 16px}.hs b{font-size:21px}}
/* ============ 术语词典 · 分类颜色 / 星级 ============ */
.gy-stars{color:var(--warn);font-size:12px;margin-left:8px;letter-spacing:1px}
.gy b{display:inline-flex;align-items:center}
/* ============ 基础知识 · 卡片信息行 ============ */
.learn-meta{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-top:6px;font-size:11.5px;color:var(--dim)}
.learn-meta .lm-stars{color:var(--warn);letter-spacing:1px;font-size:11px}
.learn-meta .tag{padding:1px 8px;font-size:10px;margin-right:0}
/* ============ 动画升级：粒子 + 切换 ============ */
.pfx{position:fixed;border-radius:50%;pointer-events:none;z-index:99999;
  animation:pfxA .65s cubic-bezier(.22,1,.36,1) forwards}
@keyframes pfxA{0%{transform:translate(0,0) scale(1);opacity:1}100%{transform:translate(var(--dx),var(--dy)) scale(.2);opacity:0}}
.page-veil{position:fixed;inset:0;background:var(--bg,#0a0e14);z-index:99998;opacity:0;pointer-events:none;transition:opacity .18s ease}
.page-veil.show{opacity:1;pointer-events:auto}
.learn-card{animation:cardIn .4s cubic-bezier(.22,1,.36,1) backwards}
@keyframes cardIn{from{opacity:0;transform:translateY(14px) scale(.97)}to{opacity:1;transform:none}}
.gy{animation:cardIn .35s cubic-bezier(.22,1,.36,1) backwards}
.nav-btn::after{content:'';position:absolute;left:50%;bottom:6px;width:0;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--acc2),var(--acc));transition:width .25s cubic-bezier(.22,1,.36,1),left .25s cubic-bezier(.22,1,.36,1)}
.nav-btn:hover::after{width:60%;left:20%}
.nav-btn.on::after{width:60%;left:20%}