@font-face{font-family:Geist;src:url(/fonts/geist.woff) format("woff");font-weight:100 900;font-display:swap}@font-face{font-family:ZCOOL KuaiLe;src:url(/courseware/assets/fonts/zcool-kuaile.woff) format("woff");font-display:swap}:root{--bg: #EDEBE8;--surface: #F7F6F4;--card: #FFFFFF;--ink: #111111;--ink-2: #55514D;--muted: #6E6A66;--line: #DAD6D1;--line-2: #E8E4DF;--accent: #3D5AFE;--ease: cubic-bezier(.2, .8, .2, 1);--font: "Geist", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;--gutter: max(20px, env(safe-area-inset-left, 0px));--gutter-r: max(20px, env(safe-area-inset-right, 0px));color-scheme:light}*,*:before,*:after{box-sizing:border-box}html,body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;padding:0}a{color:inherit}img{max-width:100%;display:block}:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}::selection{background:var(--ink);color:#fff}.loader{position:fixed;top:0;right:0;bottom:0;left:0;display:grid;place-items:center;background:var(--bg)}.loader svg{width:120px;height:40px}.loader path{fill:none;stroke:var(--ink);stroke-width:3;stroke-linecap:round;stroke-dasharray:160;stroke-dashoffset:160;animation:drawLoop 1.4s var(--ease) infinite}@keyframes drawLoop{0%{stroke-dashoffset:160}60%{stroke-dashoffset:0}to{stroke-dashoffset:-160}}.pages{position:relative;min-height:100dvh;overflow-x:clip}.page{position:relative;min-height:100dvh}.page-exit{position:absolute;inset:0 0 auto 0;z-index:1;pointer-events:none;animation:pageOut .55s var(--ease) forwards}.page-enter{z-index:2;animation:pageIn .6s var(--ease) both}.page-exit.fwd{--dx: -60px}.page-exit.back,.page-enter.fwd{--dx: 60px}.page-enter.back{--dx: -60px}@keyframes pageOut{to{opacity:0;transform:translate(var(--dx, 0)) scale(.985)}}@keyframes pageIn{0%{opacity:0;transform:translate(var(--dx, 0))}to{opacity:1;transform:none}}.reveal{animation:rise .7s var(--ease) both}.reveal.d1{animation-delay:.08s}.reveal.d2{animation-delay:.16s}.reveal.d3{animation-delay:.24s}@keyframes rise{0%{opacity:0;transform:translateY(16px)}to{opacity:1;transform:none}}@keyframes fade{0%{opacity:0}to{opacity:1}}.btn-dark,.btn-ghost{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:48px;padding:0 22px;border-radius:999px;font-weight:600;font-size:16px;text-decoration:none;transition:transform .3s var(--ease),box-shadow .3s var(--ease),background .2s,border-color .2s}.btn-dark{background:var(--ink);color:#fff}.btn-dark:hover{transform:translateY(-2px);box-shadow:0 14px 30px #1111112e}.btn-ghost{background:transparent;color:var(--ink);border:1px solid var(--line)}.btn-ghost:hover{border-color:var(--ink)}.btn-dark.big,.btn-ghost.big{min-height:58px;font-size:17px;padding:0 28px}.btn-dark.sm,.btn-ghost.sm{min-height:38px;padding:0 16px;font-size:14px}.icon-btn{width:44px;height:44px;border-radius:50%;border:1px solid var(--line);display:grid;place-items:center;flex:none;transition:background .2s,transform .3s var(--ease)}.icon-btn:hover{background:var(--bg);transform:rotate(90deg)}.chip{display:inline-flex;align-items:center;min-height:36px;padding:0 16px;border-radius:999px;border:1px solid var(--line);background:transparent;font-size:14px;font-weight:500;color:var(--ink-2);transition:background .2s,color .2s,border-color .2s}button.chip:hover{border-color:var(--ink);color:var(--ink)}.chip.on,.chip.solid{background:var(--ink);border-color:var(--ink);color:#fff}.home{position:relative;height:100dvh;min-height:620px;overflow:hidden;color:#fff;background:linear-gradient(180deg,var(--top),var(--bottom));isolation:isolate}.home-stage{position:absolute;top:-20px;right:-20px;bottom:-20px;left:-20px;transform:translate3d(var(--px, 0),var(--py, 0),0)}.home-photo{position:absolute;top:0;right:0;bottom:0;left:0;opacity:0;transform:scale(1.06);transition:opacity 1s ease,transform 1.8s var(--ease)}.home-photo.on{opacity:1;transform:none}.portrait-img{width:100%;height:100%;object-fit:cover;object-position:62% 20%}.home.photo-contain .home-bio{top:auto;right:auto;left:64px;bottom:140px;width:min(480px,34vw)}.portrait-img.fit-contain{position:absolute;left:60%;bottom:0;width:auto;height:90%;max-width:none;object-fit:contain;transform:translate(-50%);-webkit-mask-image:linear-gradient(90deg,transparent 0,#000 14%,#000 86%,transparent 100%),linear-gradient(180deg,transparent 0,#000 8%,#000 calc(100% - 150px),transparent calc(100% - 30px));-webkit-mask-composite:source-in;mask-image:linear-gradient(90deg,transparent 0,#000 14%,#000 86%,transparent 100%),linear-gradient(180deg,transparent 0,#000 8%,#000 calc(100% - 150px),transparent calc(100% - 30px));mask-composite:intersect}.home.ink-dark{color:var(--ink)}.home.ink-dark .home-shade{background:linear-gradient(180deg,#ffffff1a,#fff0 40%,#0000,#0000001a)}.home.ink-dark .home-links a,.home.ink-dark .home-links button{color:#111111c7}.home.ink-dark .home-links a:hover,.home.ink-dark .home-links button:hover{color:var(--ink)}.home.ink-dark .home-bio{color:#111111db}.home.ink-dark .home-bar{border-top-color:#11111138;color:#111111b8}.home.ink-dark .hb-name{color:var(--ink)}.home.ink-dark .ul{color:var(--ink);border-bottom-color:#111c}.home.ink-dark .thumb.on{box-shadow:0 0 0 2px var(--ink)}.home.ink-dark .thumb:before{background:var(--ink)}.portrait-ph{position:absolute;top:0;right:0;bottom:0;left:0}.portrait-ph>div{position:absolute}.ph-hair{left:calc(56% + var(--dx));top:9%;width:min(360px,30vw);height:62%;border-radius:999px 999px 80px 80px;opacity:.88;transform:translate(-50%)}.ph-head{left:calc(56% + var(--dx));top:15%;width:min(290px,24vw);height:36%;border-radius:999px 999px 46% 46%;transform:translate(-50%)}.ph-body{left:calc(56% + var(--dx));top:56%;width:min(760px,62vw);height:60%;border-radius:50% 50% 0 0;transform:translate(-50%)}.ph-note{left:calc(56% + var(--dx));top:60%;transform:translate(-50%);padding:8px 14px;border-radius:999px;background:#ffffff8c;color:#3a3632;font-size:13px;font-weight:500;white-space:nowrap}.home-shade{position:absolute;top:0;right:0;bottom:0;left:0;pointer-events:none;background:linear-gradient(180deg,#00000038,#0000 36%,#0000 60%,#00000061)}.home-nav{position:absolute;top:calc(28px + env(safe-area-inset-top,0px));left:64px;right:64px;display:flex;justify-content:space-between;align-items:center;font-size:15px;font-weight:500;animation:fade 1s .1s both}.home-brand{display:inline-flex;align-items:center;gap:12px;text-decoration:none}.brand-mono{width:44px;height:44px;border-radius:50%;display:grid;place-items:center;background:#fff;color:#111;font-weight:600;font-size:20px;letter-spacing:-.02em;flex:none;animation:monoIn .8s var(--ease) both;transition:transform .4s var(--ease)}.home-brand:hover .brand-mono{transform:rotate(-8deg) scale(1.05)}.home.ink-dark .brand-mono{background:var(--ink);color:#fff}@keyframes monoIn{0%{opacity:0;transform:scale(.6)}to{opacity:1;transform:none}}.brand-text{display:flex;flex-direction:column;gap:2px;line-height:1.1}.brand-text b{font-weight:600;font-size:21px;letter-spacing:-.02em}.brand-text small{font-size:12px;font-weight:500;letter-spacing:.04em;opacity:.7}.home-brandrow{display:flex;align-items:center;gap:18px}.brand-sep{width:1px;height:32px;background:currentColor;opacity:.25}.org-link{display:inline-flex;align-items:center}.org-logo{height:28px;width:auto;display:block}.sheet-org{display:flex;align-items:center;gap:10px}.sheet-org .org-logo{height:22px}@media(max-width:520px){.brand-mono{width:38px;height:38px;font-size:17px}.brand-text b{font-size:18px}.brand-text small{display:none}.org-logo{height:22px}.home-brandrow{gap:12px}}.home-links{display:flex;gap:34px}.home-links a,.home-links button{text-decoration:none;color:#ffffffd9;position:relative;transition:color .2s}.home-links a:after,.home-links button:after{content:"";position:absolute;left:0;right:0;bottom:-4px;height:1px;background:currentColor;transform:scaleX(0);transform-origin:right;transition:transform .35s var(--ease)}.home-links a:hover,.home-links button:hover{color:#fff}.home-links a:hover:after,.home-links button:hover:after{transform:scaleX(1);transform-origin:left}.home-headline{position:absolute;left:64px;top:13vh;margin:0;max-width:min(760px,52vw);font-weight:500;font-size:clamp(44px,6vw,92px);line-height:1.06;letter-spacing:-.04em}.home-headline .line{display:block;overflow:hidden;padding-bottom:.06em}.home-headline .line>span{display:block;animation:lineUp 1s var(--ease) both}@keyframes lineUp{0%{transform:translateY(105%)}to{transform:none}}.home-bio{position:absolute;right:64px;top:13vh;margin:0;width:min(480px,34vw);font-size:20px;line-height:1.65;font-weight:500;color:#fffffff2;animation:fade 1.2s .55s both}.home-thumbs{position:absolute;left:64px;bottom:124px;display:flex;gap:16px}.thumb{position:relative;width:72px;height:72px;border-radius:50%;overflow:hidden;background:linear-gradient(180deg,var(--top),var(--bottom));box-shadow:0 0 0 1px #ffffff40;animation:rise .7s var(--ease) backwards;transition:transform .35s var(--ease),box-shadow .3s}.thumb img{width:100%;height:100%;object-fit:cover;object-position:50% 15%}a.thumb{display:block}.thumb:hover{transform:translateY(-5px) scale(1.06)}.thumb.on{box-shadow:0 0 0 2px #fff}.thumb:before{content:"";position:absolute;left:50%;top:-14px;width:5px;height:5px;margin-left:-2.5px;border-radius:50%;background:#fff;opacity:0;transition:opacity .3s}.home-thumbs .thumb.on{overflow:visible}.home-thumbs .thumb.on:before{opacity:1}.home-thumbs .thumb.on>*{border-radius:50%;overflow:hidden}.portrait-mini{position:absolute;top:0;right:0;bottom:0;left:0;border-radius:50%;overflow:hidden}.pm-head{position:absolute;left:50%;top:14px;width:26px;height:30px;margin-left:-13px;border-radius:13px 13px 12px 12px}.pm-body{position:absolute;left:50%;top:46px;width:56px;height:40px;margin-left:-28px;border-radius:28px 28px 0 0}.home-bar{position:absolute;left:64px;right:64px;bottom:env(safe-area-inset-bottom,0px);height:96px;border-top:1px solid rgba(255,255,255,.32);display:flex;align-items:center;gap:44px;font-size:17px;font-weight:500;color:#ffffffe0;animation:fade 1s .7s both}.hb-name{color:#fff;font-weight:600}.hb-actions{display:flex;justify-content:flex-end;gap:28px;margin-left:auto}.ul{text-decoration:none;color:#fff;border-bottom:1px solid rgba(255,255,255,.85);padding-bottom:2px;transition:opacity .2s;white-space:nowrap}.ul:hover{opacity:.75}.ul.strong{font-weight:600}.ul .arrow{display:inline-block;transition:transform .35s var(--ease)}.ul:hover .arrow{transform:translate(4px)}.sheet-mask{position:fixed;top:0;right:0;bottom:0;left:0;background:#11111159;opacity:0;pointer-events:none;transition:opacity .4s;z-index:20}.sheet-mask.open{opacity:1;pointer-events:auto}.sheet{position:fixed;top:0;right:0;bottom:0;width:min(480px,100%);background:var(--surface);color:var(--ink);z-index:21;padding:calc(64px + env(safe-area-inset-top,0px)) 44px 44px;display:flex;flex-direction:column;gap:14px;transform:translate(104%);transition:transform .55s var(--ease);overflow:auto}.sheet.open{transform:none}.sheet h2{margin:0;font-weight:500;font-size:52px;letter-spacing:-.035em;line-height:1}.sheet p{margin:0;color:var(--ink-2);line-height:1.7;font-size:16px}.sheet-kicker{font-size:13px;letter-spacing:.14em;color:var(--muted);font-weight:500}.sheet-role{font-weight:500;color:var(--ink)!important}.sheet-close{position:absolute;top:calc(20px + env(safe-area-inset-top,0px));right:20px;width:44px;height:44px;border-radius:50%;font-size:24px;line-height:1;transition:background .2s,transform .3s var(--ease)}.sheet-close:hover{background:var(--line-2);transform:rotate(90deg)}.sheet-facts{margin:12px 0 0;border-top:1px solid var(--line)}.sheet-facts div{display:grid;grid-template-columns:80px 1fr;gap:12px;padding:14px 0;border-bottom:1px solid var(--line);font-size:15px}.sheet-facts dt{color:var(--muted)}.sheet-facts dd{margin:0}.sheet-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:auto;padding-top:20px}.topbar{display:flex;justify-content:space-between;align-items:center;gap:20px;padding:calc(24px + env(safe-area-inset-top,0px)) var(--gutter-r) 0 var(--gutter);max-width:1440px;margin:0 auto;flex-wrap:wrap}@media(min-width:900px){.topbar{padding-left:64px;padding-right:64px}}.crumbs{display:flex;align-items:center;gap:10px;font-size:15px;color:var(--muted);flex-wrap:wrap;min-width:0}.crumbs a{text-decoration:none;color:var(--muted);transition:color .2s}.crumbs a:hover{color:var(--ink)}.crumb-home{display:inline-flex;align-items:center;gap:10px;color:var(--ink)!important;font-weight:600}.crumb-mark{width:30px;height:30px;border-radius:50%;background:var(--ink);color:#fff;display:grid;place-items:center;font-size:13px;font-weight:600}.crumb-sep{color:#b7b1aa}.crumb-cur{color:var(--ink);font-weight:500}.search{display:flex;align-items:center;gap:10px;width:min(340px,100%);height:46px;padding:0 16px;border-radius:999px;background:var(--card);border:1px solid var(--line);color:var(--muted);transition:border-color .2s,box-shadow .2s}.search:focus-within{border-color:var(--ink);box-shadow:0 0 0 4px #1111110f}.search input{border:0;outline:none;background:transparent;font:inherit;font-size:15px;color:var(--ink);flex:1;min-width:0}.library{min-height:100dvh;padding-bottom:60px}.lib-head{max-width:1440px;margin:0 auto;padding:44px var(--gutter-r) 0 var(--gutter);display:flex;justify-content:space-between;align-items:flex-end;gap:24px;flex-wrap:wrap}@media(min-width:900px){.lib-head{padding-left:64px;padding-right:64px}}.lib-head h1{margin:0;font-weight:500;font-size:clamp(44px,5vw,76px);letter-spacing:-.04em;line-height:1}.lib-head p{margin:12px 0 0;color:var(--ink-2);font-size:17px}.chips{display:flex;gap:8px;flex-wrap:wrap}.lib-body{max-width:1440px;margin:0 auto;padding:48px var(--gutter-r) 0 var(--gutter);display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.8fr);gap:48px;align-items:start;transition:grid-template-columns .6s var(--ease)}.lib-body.has-open{grid-template-columns:minmax(0,.82fr) minmax(0,1fr)}@media(min-width:900px){.lib-body{padding-left:64px;padding-right:64px}}.shelves{display:flex;flex-direction:column;gap:52px;min-width:0}.books{display:flex;align-items:flex-end;gap:10px;padding:0 20px;min-height:300px}.board{height:16px;border-radius:4px;background:#d2cdc7;box-shadow:0 12px 20px #11111114}.book{position:relative;flex:none;display:flex;flex-direction:column;align-items:center;justify-content:space-between;padding:16px 0 12px;border-radius:6px 6px 3px 3px;box-shadow:inset -6px 0 #0000001a,inset 3px 0 #ffffff1f;transform-origin:50% 100%;animation:bookIn .7s var(--ease) backwards;transition:transform .5s var(--ease),opacity .4s,filter .4s,box-shadow .4s}@keyframes bookIn{0%{opacity:0;transform:translateY(40px)}to{opacity:1;transform:none}}.book:hover:not(:disabled){transform:translateY(-14px);box-shadow:0 16px 26px #1111112e,inset -6px 0 #0000001a}.book.pulled{transform:translateY(-36px) rotate(-4deg);box-shadow:0 30px 44px #11111142,inset -6px 0 #0000001a;z-index:1}.book.pulled:hover{transform:translateY(-40px) rotate(-4deg)}.book.dim{opacity:.36;filter:saturate(.5)}.book.dim:hover{opacity:.7}.book.faded{opacity:.14;filter:grayscale(1);cursor:default;transform:scale(.96)}.b-band{position:absolute;left:0;right:0;top:44px;height:6px;background:#ffffff38}.b-band2{position:absolute;left:0;right:0;bottom:46px;height:3px;background:#ffffff2e}.b-code{font-size:12px;font-weight:600;letter-spacing:.08em;opacity:.85}.b-title{writing-mode:vertical-rl;font-size:19px;font-weight:600;letter-spacing:.12em}.b-count{font-size:13px;font-weight:500;opacity:.9}.lib-hint{position:sticky;top:24px;display:flex;justify-content:center;padding-top:40px;animation:fade .6s .3s both}.hint-card{max-width:360px;padding:32px;border:1px dashed #C4BFB9;border-radius:24px;display:flex;flex-direction:column;gap:10px}.hint-card h2{margin:0;font-weight:500;font-size:28px;letter-spacing:-.02em}.hint-card p{margin:0;color:var(--ink-2);line-height:1.6}.hint-books{display:flex;gap:5px;align-items:flex-end;height:50px;margin-bottom:6px}.hint-books i{display:block;width:14px;border-radius:3px;background:var(--ink);animation:hintBob 2.4s var(--ease) infinite}.hint-books i:nth-child(1){height:40px}.hint-books i:nth-child(2){height:50px;background:var(--accent);animation-delay:.2s}.hint-books i:nth-child(3){height:36px;background:#b7afa6;animation-delay:.4s}@keyframes hintBob{0%,60%,to{transform:none}30%{transform:translateY(-8px)}}.panel-mask{display:none}.panel{position:sticky;top:24px;background:var(--card);border-radius:28px;padding:30px;display:flex;flex-direction:column;gap:24px;box-shadow:0 30px 80px #11111114;animation:panelIn .6s var(--ease) both;max-height:calc(100dvh - 48px);overflow:auto}@keyframes panelIn{0%{opacity:0;transform:translate(48px) scale(.985)}to{opacity:1;transform:none}}.panel-head{display:flex;gap:22px;align-items:flex-start}.panel-book{width:92px;height:124px;flex:none;border-radius:6px 12px 12px 6px;box-shadow:inset 8px 0 #00000024;display:flex;align-items:flex-end;padding:10px;font-size:13px;font-weight:600;animation:bookOpen .7s .1s var(--ease) both;transform-origin:0 50%}@keyframes bookOpen{0%{transform:perspective(600px) rotateY(-60deg);opacity:0}to{transform:none;opacity:1}}.panel-meta{flex:1;min-width:0;display:flex;flex-direction:column;gap:8px}.panel-kicker{font-size:13px;letter-spacing:.1em;color:var(--muted);font-weight:500}.panel-meta h2{margin:0;font-weight:500;font-size:40px;line-height:1.05;letter-spacing:-.035em}.panel-meta p{margin:0;color:var(--ink-2);line-height:1.6;font-size:15px}.lesson-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}.lesson-list li{animation:rise .55s var(--ease) both}.lesson-row{display:grid;grid-template-columns:52px minmax(0,1fr) auto auto;gap:16px;align-items:center;padding:18px 20px;border:1px solid var(--line-2);border-radius:18px;text-decoration:none;color:var(--ink);transition:border-color .25s,transform .3s var(--ease),box-shadow .3s var(--ease),background .25s}.lesson-row:hover{border-color:var(--ink);transform:translateY(-2px);box-shadow:0 14px 30px #11111112}.lr-no{font-size:26px;font-weight:500;letter-spacing:-.03em;font-variant-numeric:tabular-nums}.lr-main{display:flex;flex-direction:column;gap:4px;min-width:0}.lr-title{font-weight:600;font-size:18px}.lr-title em{font-style:normal;color:var(--muted);font-weight:500}.lr-sub{font-size:13px;color:var(--muted)}.badge{font-size:12px;font-weight:600;padding:6px 11px;border-radius:999px;background:var(--ink);color:#fff;white-space:nowrap}.badge.muted{background:var(--bg);color:var(--muted)}.lr-arrow{font-size:18px;transition:transform .35s var(--ease)}.lesson-row:hover .lr-arrow{transform:translate(5px)}.panel-empty{padding:26px;border:1px dashed var(--line);border-radius:18px}.panel-empty p{margin:0 0 6px;line-height:1.6}.muted{color:var(--muted);font-size:14px}code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.9em;background:var(--bg);padding:1px 6px;border-radius:5px}.lesson{min-height:100dvh;padding-bottom:60px}.lesson-grid{max-width:1440px;margin:0 auto;padding:44px var(--gutter-r) 0 var(--gutter);display:grid;grid-template-columns:minmax(0,560px) minmax(0,1fr);gap:72px;align-items:start}@media(min-width:900px){.lesson-grid{padding-left:64px;padding-right:64px}}.lesson-left{display:flex;flex-direction:column;gap:22px;position:sticky;top:24px}.cover-wrap{perspective:1400px}.cover{animation:coverOpen .9s var(--ease) both;transform-origin:0 50%}@keyframes coverOpen{0%{opacity:0;transform:perspective(1400px) rotateY(-28deg) translate(-30px)}to{opacity:1;transform:none}}.cover-tilt{position:relative;aspect-ratio:4 / 3;border-radius:10px 22px 22px 10px;overflow:hidden;transition:transform .6s var(--ease),box-shadow .6s var(--ease);box-shadow:inset 14px 0 0 var(--spine),22px 26px 50px #11111129;transform:perspective(1400px) rotateY(-4deg);will-change:transform}.cover:hover .cover-tilt{box-shadow:inset 14px 0 0 var(--spine),34px 36px 70px #1113}.cover-img{width:100%;height:100%;object-fit:cover}.cover-graph{background-color:#f5f8fc;background-image:linear-gradient(#E3EAF3 1px,transparent 1px),linear-gradient(90deg,#E3EAF3 1px,transparent 1px);background-size:20px 20px;padding:9% 8% 6% 11%;display:flex;flex-direction:column;justify-content:space-between;color:#15223d}.cover-series{font-size:13px;font-weight:600;letter-spacing:.14em;color:#5a6782;text-transform:uppercase}.cover-title{font-family:"ZCOOL KuaiLe",var(--font);font-size:clamp(56px,7vw,100px);line-height:1;margin-top:10px}.cover-title span{color:#0e9f6e}.cover-en{font-weight:700;font-size:clamp(20px,2vw,28px);color:#5a6782;margin-top:6px}.cover-lines{width:100%;height:30%}.cover-lines path{fill:none;stroke-linecap:round;stroke-dasharray:900;stroke-dashoffset:900;animation:draw 1.8s var(--ease) forwards}.cover-lines .cl1{stroke:#0e9f6e;stroke-width:9;animation-delay:.6s}.cover-lines .cl2{stroke:#eb4c37;stroke-width:7;animation-delay:.9s}@keyframes draw{to{stroke-dashoffset:0}}.cover-badge{position:absolute;right:18px;top:18px;padding:6px 12px;border-radius:999px;background:#fff;border:1px solid #DCE3EC;font-size:12px;font-weight:600;color:#5a6782}.lesson-cta{display:flex;gap:12px}.lesson-cta .btn-dark{flex:1}.lesson-note{margin:0;font-size:13px;color:var(--muted);line-height:1.6}.lesson-right{display:flex;flex-direction:column;gap:22px;min-width:0}.lesson-chips{display:flex;gap:8px;flex-wrap:wrap}.lesson-chips .chip{min-height:32px;font-size:13px}.lesson-title{margin:0;font-weight:500;font-size:clamp(48px,5.4vw,84px);line-height:1;letter-spacing:-.045em;display:flex;flex-direction:column;gap:10px}.lesson-title span{font-size:.34em;letter-spacing:-.01em;color:var(--muted)}.lesson-summary{margin:0;font-size:18px;line-height:1.7;color:var(--ink-2);max-width:680px}.tabs{position:relative;display:flex;gap:30px;border-bottom:1px solid var(--line);margin-top:8px}.tabs button{padding:12px 2px;font-weight:600;font-size:16px;color:var(--muted);transition:color .2s;display:inline-flex;align-items:center;gap:8px}.tabs button.on{color:var(--ink)}.tab-count{font-size:12px;min-width:22px;height:22px;padding:0 6px;border-radius:999px;background:var(--ink);color:#fff;display:inline-grid;place-items:center}.tab-bar{position:absolute;left:0;bottom:-1px;height:2px;background:var(--ink);transition:transform .45s var(--ease),width .45s var(--ease)}.toc{list-style:none;margin:0;padding:0;background:var(--card);border-radius:22px;overflow:hidden}.toc li{display:grid;grid-template-columns:44px minmax(0,1fr) auto;gap:14px;align-items:center;padding:16px 22px;border-bottom:1px solid var(--line-2);animation:rise .5s var(--ease) both;transition:background .2s}.toc li:last-child{border-bottom:0}.toc li:hover{background:var(--surface)}.toc-no{font-size:14px;color:var(--muted);font-variant-numeric:tabular-nums}.toc-main{display:flex;flex-direction:column;gap:3px;min-width:0}.toc-main b{font-weight:600;font-size:16px}.toc-main small{font-size:13px;color:var(--muted)}.toc-pages{font-size:14px;color:var(--muted);font-variant-numeric:tabular-nums}.records{display:flex;flex-direction:column;gap:10px}.record{display:grid;grid-template-columns:minmax(0,1fr) auto auto;gap:12px;align-items:center;padding:16px 20px;background:var(--card);border-radius:18px;animation:rise .5s var(--ease) both}.rec-main{display:flex;flex-direction:column;gap:3px;min-width:0}.rec-main b{font-weight:600}.rec-main small{color:var(--muted);font-size:13px}.empty-card{padding:28px;border-radius:22px;border:1px dashed var(--line);animation:fade .4s both}.empty-card p{margin:6px 0 0;color:var(--ink-2);line-height:1.6;font-size:15px}.missing{min-height:100dvh;display:flex;flex-direction:column;align-items:flex-start;justify-content:center;gap:14px;padding:40px var(--gutter-r) 40px var(--gutter);max-width:900px;margin:0 auto}.missing-num{font-size:clamp(100px,20vw,220px);font-weight:500;letter-spacing:-.06em;line-height:.9;color:#d2cdc7;animation:rise .8s var(--ease) both}.missing h1{margin:0;font-weight:500;font-size:40px;letter-spacing:-.03em}.missing p{margin:0;color:var(--ink-2);line-height:1.6}.missing-actions{display:flex;gap:12px;margin-top:10px;flex-wrap:wrap}@media(max-width:1100px){.home-bio{top:auto;bottom:230px;right:64px;width:min(380px,40vw)}.lesson-grid{grid-template-columns:minmax(0,1fr);gap:40px}.lesson-left{position:static;max-width:620px}}@media(max-width:900px){.home-nav{left:var(--gutter);right:var(--gutter-r)}.home-links{gap:20px}.home-headline{left:var(--gutter);right:var(--gutter-r);max-width:none;top:96px;font-size:clamp(40px,11vw,64px)}.home-bio{left:var(--gutter);right:var(--gutter-r);width:auto;top:auto;bottom:230px;font-size:15px}.home-thumbs{left:var(--gutter);bottom:150px;gap:10px}.thumb{width:52px;height:52px}.home-bar{left:var(--gutter);right:var(--gutter-r);grid-template-columns:1fr auto;height:120px;align-content:center;row-gap:6px;font-size:15px}.home-bar>div:nth-child(2){display:none}.hb-actions{gap:18px}.ph-head{width:46vw}.ph-hair{width:58vw}.ph-body{width:110vw}.ph-head,.ph-hair,.ph-body,.ph-note{left:calc(60% + var(--dx) / 3)}.portrait-img.fit-contain{left:50%;height:56%}.home.photo-contain .home-bio{left:var(--gutter);right:var(--gutter-r);width:auto;top:calc(110px + 3.4*clamp(40px,11vw,64px));bottom:auto;font-size:16px}.lib-body,.lib-body.has-open{grid-template-columns:minmax(0,1fr)}.lib-hint{display:none}.panel-mask{display:block;position:fixed;top:0;right:0;bottom:0;left:0;background:#11111159;z-index:30;animation:fade .3s both}.panel{position:fixed;left:0;right:0;bottom:0;top:auto;z-index:31;border-radius:28px 28px 0 0;max-height:82dvh;padding:26px var(--gutter-r) calc(26px + env(safe-area-inset-bottom,0px)) var(--gutter);animation:sheetUp .5s var(--ease) both}@keyframes sheetUp{0%{transform:translateY(100%)}to{transform:none}}.panel-meta h2{font-size:30px}.panel-book{width:64px;height:88px}.lesson-row{grid-template-columns:40px minmax(0,1fr) auto;padding:14px 16px}.lr-arrow{display:none}.books{min-height:280px;padding:0 10px}.record{grid-template-columns:1fr auto}.record .btn-ghost{display:none}}@media(max-width:520px){.lesson-cta{flex-direction:column}.search,.topbar-right{width:100%}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-delay:0s!important;transition-duration:.01ms!important}}.home-page{background:var(--bg)}.home .home-headline{font-family:var(--font);letter-spacing:-.045em}.scroll-cue{display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:500;color:inherit;opacity:.8;transition:opacity .2s}.scroll-cue:hover{opacity:1}.cue-arrow{display:inline-block;animation:cueBob 1.8s var(--ease) infinite}@keyframes cueBob{0%,to{transform:none}50%{transform:translateY(4px)}}.profile{padding:120px var(--gutter-r) 120px var(--gutter)}@media(min-width:900px){.profile{padding-left:64px;padding-right:64px}}.pf-wrap{max-width:1280px;margin:0 auto;display:flex;flex-direction:column;gap:56px}.rv{opacity:0;transform:translateY(28px);transition:opacity .9s var(--ease),transform .9s var(--ease)}.rv.in{opacity:1;transform:none}.pf-kicker{font-size:13px;font-weight:500;letter-spacing:.16em;color:var(--muted)}.pf-statement{margin:-28px 0 0;font-weight:500;font-size:clamp(34px,4.6vw,68px);line-height:1.12;letter-spacing:-.04em;max-width:16em;text-wrap:balance}.pf-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.pf-stat{padding:36px 32px 36px 0;display:flex;flex-direction:column;gap:8px}.pf-stat+.pf-stat{border-left:1px solid var(--line);padding-left:32px}.pf-num{font-size:clamp(56px,7vw,104px);font-weight:500;letter-spacing:-.05em;line-height:.95;font-variant-numeric:tabular-nums}.pf-num span{font-size:.32em;letter-spacing:-.01em;margin-left:6px;color:var(--ink-2)}.pf-label{font-size:17px;font-weight:600;margin-top:10px}.pf-note{font-size:14px;color:var(--muted);line-height:1.5}.pf-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.2fr);gap:64px}.pf-block{display:flex;flex-direction:column;gap:14px}.pf-block h3{margin:18px 0 0;font-size:13px;font-weight:500;letter-spacing:.14em;color:var(--muted)}.pf-block h3:first-child{margin-top:0}.pf-block p{margin:0;font-size:18px;line-height:1.7;color:var(--ink-2)}.pf-chips{display:flex;flex-wrap:wrap;gap:10px}.pf-chips span{padding:10px 18px;border-radius:999px;background:var(--card);font-size:17px;font-weight:500}.pf-org{display:flex;align-items:center;gap:12px}.pf-org .org-logo{height:26px}.pf-features{list-style:none;margin:0;padding:0;display:flex;flex-direction:column}.pf-features li{display:grid;grid-template-columns:52px 1fr;gap:12px;padding:22px 0;border-bottom:1px solid var(--line);font-size:21px;line-height:1.55;letter-spacing:-.01em}.pf-features li:first-child{padding-top:6px}.pf-features li span{font-size:14px;color:var(--muted);padding-top:6px;font-variant-numeric:tabular-nums}.pf-end{display:flex;justify-content:space-between;align-items:flex-end;gap:32px;flex-wrap:wrap;padding-top:24px}.pf-motto{margin:0;font-size:clamp(28px,3.4vw,48px);font-weight:500;letter-spacing:-.035em;line-height:1.1;max-width:14em}.pf-cta{display:grid;grid-template-columns:auto auto;grid-template-rows:auto auto;column-gap:28px;align-items:center;padding:22px 28px;border-radius:999px;background:var(--ink);color:#fff;text-decoration:none;transition:transform .35s var(--ease),box-shadow .35s}.pf-cta span:first-child{font-size:19px;font-weight:600}.pf-cta small{grid-row:2;font-size:13px;opacity:.65}.pf-cta-arrow{grid-row:1 / span 2;grid-column:2;font-size:26px;transition:transform .35s var(--ease)}.pf-cta:hover{transform:translateY(-3px);box-shadow:0 18px 40px #1113}.pf-cta:hover .pf-cta-arrow{transform:translate(6px)}@media(max-width:900px){.profile{padding-top:80px;padding-bottom:80px}.pf-wrap{gap:40px}.pf-stats{grid-template-columns:1fr}.pf-stat{padding:24px 0}.pf-stat+.pf-stat{border-left:0;border-top:1px solid var(--line);padding-left:0}.pf-grid{grid-template-columns:1fr;gap:40px}.pf-features li{font-size:18px}.scroll-cue{display:none}}@media(max-width:900px){.home-bar>div:first-child{font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-width:0}}
