:root{--bg:#f5f7fb;--card:#fff;--text:#101828;--muted:#667085;--line:#e4e7ec;--accent:#2563eb;--accent2:#7c3aed;--code:#111827;--codeText:#e5e7eb;--shadow:0 8px 30px rgba(16,24,40,.08)}[data-theme=dark]{--bg:#0b1020;--card:#121a2b;--text:#f8fafc;--muted:#aab4c5;--line:#263248;--accent:#60a5fa;--accent2:#a78bfa;--code:#070b14;--codeText:#e5e7eb;--shadow:0 8px 30px rgba(0,0,0,.25)}*{box-sizing:border-box}html{background:var(--bg)}body{margin:0;font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:var(--bg);color:var(--text);padding-bottom:92px}.top{position:sticky;top:0;z-index:20;display:flex;align-items:center;justify-content:space-between;padding:14px 18px;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}.eyebrow{font-size:10px;letter-spacing:.2em;color:var(--muted);font-weight:800}.top h1{font-size:22px;margin:-1px 0 0;letter-spacing:-.04em}.iconbtn{border:1px solid var(--line);background:var(--card);color:var(--text);width:42px;height:42px;border-radius:14px;font-size:20px}main{max-width:920px;margin:auto;padding:18px}.hero{padding:18px 0 8px}.hero h2{font-size:30px;line-height:1.05;letter-spacing:-.04em;margin:0 0 8px}.hero p{color:var(--muted);margin:0 0 18px;line-height:1.5}.search{display:flex;gap:8px;background:var(--card);border:1px solid var(--line);border-radius:18px;padding:12px 14px;box-shadow:var(--shadow)}.search input{border:0;outline:0;background:transparent;color:var(--text);font-size:16px;width:100%}.sectionTitle{display:flex;align-items:end;justify-content:space-between;margin:25px 2px 12px}.sectionTitle h3{margin:0;font-size:18px}.sectionTitle small{color:var(--muted)}.grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.card{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:16px;box-shadow:var(--shadow);cursor:pointer}.card .emoji{font-size:24px}.card h4{margin:16px 0 5px;font-size:16px}.card p{margin:0;color:var(--muted);font-size:13px;line-height:1.35}.card .count{display:inline-block;margin-top:12px;font-size:11px;color:var(--accent);font-weight:800}.list{display:flex;flex-direction:column;gap:10px}.row{display:flex;gap:12px;align-items:center;background:var(--card);border:1px solid var(--line);border-radius:17px;padding:14px;cursor:pointer}.row .grow{flex:1}.row strong{display:block;font-size:15px}.row small{display:block;color:var(--muted);margin-top:3px}.pill{font-size:11px;font-weight:800;color:var(--accent);background:color-mix(in srgb,var(--accent) 10%,transparent);padding:6px 9px;border-radius:999px}.back{border:0;background:transparent;color:var(--accent);font-weight:800;padding:5px 0 14px;font-size:14px}.article{background:var(--card);border:1px solid var(--line);border-radius:22px;padding:20px;box-shadow:var(--shadow)}.article h2{font-size:27px;line-height:1.1;letter-spacing:-.03em;margin:0 44px 8px 0}.article .meta{color:var(--muted);font-size:13px;margin-bottom:20px}.article h3{margin-top:25px;font-size:18px}.article p,.article li{line-height:1.62}.article ul{padding-left:21px}.save{float:right;margin-top:-45px;border:1px solid var(--line);background:var(--bg);color:var(--text);border-radius:12px;width:38px;height:38px;font-size:18px}.save.on{color:#f59e0b}.note{border-left:4px solid var(--accent);background:color-mix(in srgb,var(--accent) 7%,var(--card));padding:13px 14px;border-radius:0 12px 12px 0;margin:16px 0}.codeWrap{position:relative;margin:16px 0}.codeWrap pre{overflow:auto;background:var(--code);color:var(--codeText);padding:18px;border-radius:16px;font-size:13px;line-height:1.5}.copy{position:absolute;right:8px;top:8px;border:0;border-radius:9px;padding:7px 9px;background:#fff;color:#111;font-size:11px;font-weight:800}.check{display:flex;gap:10px;align-items:flex-start;padding:12px 0;border-bottom:1px solid var(--line)}.check input{width:20px;height:20px}.toolbox{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:17px}.toolbox label{display:block;font-size:12px;color:var(--muted);font-weight:700;margin:10px 0 5px}.toolbox input,.toolbox textarea{width:100%;padding:12px;border:1px solid var(--line);border-radius:12px;background:var(--bg);color:var(--text);font-size:15px}.result{margin-top:14px;font-size:24px;font-weight:900;color:var(--accent)}.bottom{position:fixed;z-index:30;bottom:0;left:0;right:0;height:76px;padding-bottom:env(safe-area-inset-bottom);display:flex;justify-content:space-around;background:color-mix(in srgb,var(--card) 94%,transparent);backdrop-filter:blur(20px);border-top:1px solid var(--line)}.bottom button{flex:1;border:0;background:transparent;color:var(--muted);font-size:20px}.bottom button span{display:block;font-size:10px;margin-top:4px}.bottom button.active{color:var(--accent)}.empty{text-align:center;color:var(--muted);padding:50px 20px}.tagbar{display:flex;gap:8px;overflow:auto;padding-bottom:5px}.tag{white-space:nowrap;border:1px solid var(--line);background:var(--card);color:var(--text);padding:8px 11px;border-radius:999px;font-size:12px}.tag.active{background:var(--text);color:var(--bg)}@media(min-width:700px){.grid{grid-template-columns:repeat(4,1fr)}.bottom{left:50%;transform:translateX(-50%);max-width:600px;border:1px solid var(--line);border-bottom:0;border-radius:22px 22px 0 0}.hero h2{font-size:42px}}

.article p{white-space:normal}.lessonProgress{margin:0 0 18px}.doneBtn{border:1px solid var(--line);background:var(--bg);color:var(--muted);padding:9px 12px;border-radius:12px;font-weight:800}.doneBtn.done{color:var(--accent);border-color:var(--accent)}

/* Mobile list hardening - V2.0.1 */
html,body{max-width:100%;overflow-x:hidden}
main,#app,.list{min-width:0;max-width:100%}
.list{width:100%;overflow:visible}
.row{width:100%;max-width:100%;min-width:0;flex-wrap:nowrap}
.row .grow{min-width:0;max-width:100%}
.row strong,.row small{overflow-wrap:anywhere;word-break:normal}
.row small{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.row .pill{flex:0 0 auto;max-width:34%;white-space:nowrap}
@media(max-width:699px){.list{display:flex!important;flex-direction:column!important;gap:10px!important}.list>.row{display:flex!important;position:relative!important;left:auto!important;right:auto!important;transform:none!important;margin:0!important}.grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}.card{min-width:0}.tagbar{max-width:100vw}}