:root{--ink:#eaf3ff;--muted:#90a7c6;--line:rgba(154,190,255,.15);--panel:rgba(7,19,48,.72);--panel2:rgba(12,27,64,.84);--cyan:#68e5ff;--violet:#9c8cff;--pink:#e6a7ff;--serif:"Noto Serif SC",serif;--sans:"Noto Sans SC",sans-serif}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;min-height:100vh;background:#041027;color:var(--ink);font-family:var(--sans);line-height:1.75}button,input,textarea{font:inherit}button{color:inherit}#ocean{position:fixed;inset:0;width:100%;height:100%;z-index:-2;background:radial-gradient(circle at 75% 8%,#18265f 0,transparent 36%),radial-gradient(circle at 18% 42%,#082f50 0,transparent 34%),linear-gradient(160deg,#050b22,#071d3a 48%,#090f29)}body:after{content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;background:linear-gradient(rgba(255,255,255,.018) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.018) 1px,transparent 1px);background-size:46px 46px;mask-image:linear-gradient(to bottom,#000,transparent 75%)}
.shell{max-width:1440px;margin:auto;padding:0 42px}.topbar{height:88px;display:flex;align-items:center;gap:32px;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10;background:rgba(4,14,35,.72);backdrop-filter:blur(24px)}.brand{display:flex;align-items:center;gap:12px;background:none;border:0;text-align:left;font-family:var(--serif);font-weight:700;font-size:18px;padding:0;cursor:pointer;margin-right:auto}.brand small{display:block;font:500 8px/1.5 var(--sans);letter-spacing:.22em;color:var(--muted)}.brand-mark{display:grid;place-items:center;width:39px;height:39px;border:1px solid rgba(104,229,255,.42);border-radius:50% 50% 46% 46%;color:#081a33;background:linear-gradient(145deg,#c6f7ff,#8fa7ff);box-shadow:0 0 28px rgba(104,229,255,.25)}nav{display:flex;gap:4px}.nav-btn,.icon-btn{border:0;background:none;color:var(--muted);padding:9px 13px;border-radius:99px;cursor:pointer}.nav-btn:hover,.nav-btn.active{color:var(--ink);background:rgba(255,255,255,.07)}.icon-btn{border:1px solid var(--line);color:var(--ink)}
main{min-height:calc(100vh - 164px)}.hero{padding:88px 0 56px;display:grid;grid-template-columns:1.2fr .8fr;gap:56px;align-items:end}.eyebrow{text-transform:uppercase;letter-spacing:.2em;font-size:11px;color:var(--cyan);font-weight:600}.hero h1{font:700 clamp(44px,7vw,92px)/1.08 var(--serif);letter-spacing:-.04em;margin:14px 0 24px;max-width:850px}.hero h1 em{font-style:normal;color:transparent;background:linear-gradient(90deg,#c9fbff,var(--violet),var(--pink));background-clip:text}.lede{font-size:17px;color:#b5c5da;max-width:700px}.hero-aside{border-left:1px solid var(--line);padding-left:28px}.progress-ring{width:118px;aspect-ratio:1;border-radius:50%;display:grid;place-items:center;background:conic-gradient(var(--cyan) var(--p),rgba(255,255,255,.07) 0);position:relative;margin-bottom:22px}.progress-ring:after{content:"";position:absolute;inset:7px;background:#091a38;border-radius:50%}.progress-ring strong{font:600 27px var(--serif);z-index:1}.progress-ring small{display:block;font:400 10px var(--sans);color:var(--muted)}.stats{display:flex;gap:24px}.stats span{color:var(--muted);font-size:12px}.stats b{display:block;color:var(--ink);font:600 20px var(--serif)}
.toolbar{display:flex;align-items:center;gap:14px;margin:12px 0 30px}.search{flex:1;max-width:560px;position:relative}.search input{width:100%;padding:14px 18px 14px 43px;background:rgba(255,255,255,.055);border:1px solid var(--line);border-radius:14px;color:var(--ink);outline:none}.search:before{content:"⌕";position:absolute;left:16px;top:10px;color:var(--muted);font-size:22px}.filters{display:flex;gap:8px;overflow:auto}.chip{white-space:nowrap;border:1px solid var(--line);border-radius:99px;padding:8px 13px;background:transparent;color:var(--muted);cursor:pointer}.chip.active{background:#dcecff;color:#08142a;border-color:transparent}.section-title{display:flex;justify-content:space-between;align-items:end;margin:36px 0 18px}.section-title h2{font:600 28px var(--serif);margin:0}.section-title span{font-size:12px;color:var(--muted)}
.chapters{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.card{min-height:340px;border:1px solid var(--line);border-radius:22px;padding:24px;display:flex;flex-direction:column;background:linear-gradient(160deg,rgba(15,35,75,.84),rgba(5,15,39,.76));position:relative;overflow:hidden;transition:.3s ease;cursor:pointer}.card:hover{transform:translateY(-5px);border-color:rgba(104,229,255,.4);box-shadow:0 20px 55px rgba(0,0,0,.24)}.card:before{content:"";position:absolute;width:220px;height:220px;border-radius:50%;right:-90px;top:-100px;background:radial-gradient(circle,rgba(125,219,255,.24),transparent 68%)}.card-num{font:500 12px var(--sans);letter-spacing:.15em;color:var(--cyan)}.card h3{font:600 23px/1.45 var(--serif);margin:32px 0 12px}.card p{color:var(--muted);font-size:13px;margin:0}.card-meta{display:flex;align-items:center;gap:9px;margin-top:auto;color:#b6c9e3;font-size:12px}.dot{width:4px;height:4px;border-radius:50%;background:var(--violet)}.card-actions{position:absolute;top:18px;right:18px;display:flex;gap:5px}.round{border:0;background:rgba(0,0,0,.18);width:35px;height:35px;border-radius:50%;cursor:pointer;color:#a9bad1}.round.on{color:#ffd5ff;background:rgba(156,140,255,.18)}.read-badge{position:absolute;right:20px;bottom:19px;font-size:10px;letter-spacing:.12em;color:var(--cyan)}
.article{max-width:860px;margin:0 auto;padding:58px 0 96px}.article-back{border:0;background:none;color:var(--muted);cursor:pointer;padding:0 0 28px}.article-head{padding:44px 0 48px;border-bottom:1px solid var(--line)}.article-head h1{font:700 clamp(34px,5vw,60px)/1.3 var(--serif);margin:15px 0 20px}.article-deck{color:#b3c6de;font-size:18px}.article-tools{display:flex;gap:10px;margin-top:25px}.pill{border:1px solid var(--line);border-radius:99px;background:rgba(255,255,255,.04);padding:9px 15px;cursor:pointer}.pill.on{background:rgba(104,229,255,.12);border-color:rgba(104,229,255,.4);color:var(--cyan)}.prose{font-size:17px;padding-top:35px}.prose h2{font:600 27px var(--serif);margin:55px 0 18px;color:#f3f6ff}.prose h3{font:600 20px var(--serif);margin-top:38px}.prose p{color:#c6d2e3;margin:1.25em 0}.prose strong{color:#fff}.prose blockquote{margin:32px 0;padding:20px 25px;border-left:2px solid var(--cyan);background:rgba(104,229,255,.06);color:#d8faff;border-radius:0 14px 14px 0}.prose table{width:100%;border-collapse:collapse;margin:28px 0;font-size:14px}.prose th,.prose td{padding:12px;border-bottom:1px solid var(--line);text-align:left}.prose a{color:var(--cyan)}.note-box{margin-top:70px;border:1px solid rgba(156,140,255,.34);border-radius:20px;background:rgba(12,20,55,.8);padding:25px}.note-box h3{font:600 21px var(--serif);margin:0 0 8px}.note-box textarea{width:100%;min-height:160px;background:rgba(0,0,0,.18);border:1px solid var(--line);border-radius:12px;color:var(--ink);padding:15px;resize:vertical;outline:none}.save-line{display:flex;justify-content:space-between;margin-top:10px;color:var(--muted);font-size:12px}
.empty{padding:110px 20px;text-align:center;color:var(--muted)}.empty b{display:block;color:var(--ink);font:600 27px var(--serif);margin-bottom:10px}.notes-list{display:grid;gap:15px;margin:35px 0}.note-card{padding:20px 22px;border:1px solid var(--line);border-radius:16px;background:var(--panel);cursor:pointer}.note-card h3{font:600 18px var(--serif);margin:0 0 8px}.note-card p{margin:0;color:var(--muted);white-space:pre-wrap}footer{min-height:76px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;color:#607796;font-size:11px}dialog{padding:0;border:1px solid var(--line);border-radius:22px;color:var(--ink);background:#091a38;max-width:680px;width:calc(100% - 30px);box-shadow:0 40px 100px #000}dialog::backdrop{background:rgba(1,7,20,.78);backdrop-filter:blur(8px)}.dialog-card{padding:28px}.dialog-head{display:flex;justify-content:space-between}.dialog-head h2{font:600 28px var(--serif);margin:4px 0}.close{border:0;background:none;color:var(--muted);font-size:28px;cursor:pointer}.dialog-card p{color:var(--muted);font-size:13px}.file-drop{display:block;text-align:center;border:1px dashed rgba(104,229,255,.35);padding:20px;border-radius:13px;color:var(--cyan);cursor:pointer}.file-drop input{display:none}.or{text-align:center;color:var(--muted);font-size:11px;margin:13px 0}.dialog-card textarea{width:100%;background:#06132b;border:1px solid var(--line);border-radius:12px;color:var(--ink);padding:14px}.dialog-actions{display:flex;justify-content:flex-end;gap:8px;margin-top:14px}.ghost,.primary{border-radius:99px;padding:9px 18px;cursor:pointer}.ghost{background:none;border:1px solid var(--line);color:var(--muted)}.primary{border:0;background:linear-gradient(90deg,var(--cyan),#aab3ff);color:#07142c;font-weight:600}.form-status{min-height:20px;text-align:right}
@media(max-width:900px){.shell{padding:0 20px}.topbar{gap:10px}.topbar nav{display:none}.hero{grid-template-columns:1fr;padding-top:58px}.hero-aside{border-left:0;padding-left:0;display:flex;align-items:center;gap:25px}.chapters{grid-template-columns:repeat(2,1fr)}}@media(max-width:600px){.brand small{display:none}.icon-btn{font-size:0}.icon-btn:first-letter{font-size:18px}.hero h1{font-size:44px}.toolbar{align-items:stretch;flex-direction:column}.filters{padding-bottom:4px}.chapters{grid-template-columns:1fr}.card{min-height:280px}.article{padding-top:30px}.article-head{padding-top:20px}.prose{font-size:16px}.stats{gap:14px}footer{flex-direction:column;justify-content:center;gap:3px}}