:root{
    --paper:#f3ede1;
    --paper-deep:#e9e0cf;
    --card:#faf6ec;
    --ink:#1e1b16;
    --ink-2:#4c463c;
    --ink-3:#837968;
    --line:rgba(30,27,22,.14);
    --line-soft:rgba(30,27,22,.08);
    --accent:#b23b2e;
    --accent-deep:#8a2a20;
    --moss:#6f7d60;
    --gold:#b08a4f;
    --serif:"Songti SC","STSong","Noto Serif CJK SC","Source Han Serif SC","SimSun",serif;
    --sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
    --en:"Iowan Old Style","Palatino Linotype","Book Antiqua",Georgia,serif;
    --radius:22px;
    --shadow:0 28px 70px -34px rgba(44,33,20,.38);
    --shadow-soft:0 14px 40px -24px rgba(44,33,20,.30);
  }
  *{box-sizing:border-box}
  html{scroll-behavior:smooth}
  body{
    margin:0;background:var(--paper);color:var(--ink);font-family:var(--sans);
    font-size:15px;line-height:1.65;-webkit-font-smoothing:antialiased;
    text-rendering:optimizeLegibility;overflow-x:hidden;
  }
  body::before{
    content:"";position:fixed;inset:0;pointer-events:none;z-index:0;opacity:.14;
    background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.82' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='180' height='180' filter='url(%23n)' opacity='.55'/%3E%3C/svg%3E");
    mix-blend-mode:multiply;
  }
  button,input{font:inherit}
  button{color:inherit}
  button:focus-visible,a:focus-visible,input:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
  ::selection{background:rgba(178,59,46,.18)}
  .icon{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;flex:none}
  .icon.sm{width:15px;height:15px}
  .icon.lg{width:22px;height:22px}
  .app{position:relative;z-index:1;min-height:100vh}
  .rail{
    position:fixed;left:0;top:0;bottom:0;width:250px;padding:30px 22px 24px;
    display:flex;flex-direction:column;z-index:25;
    background:rgba(243,237,225,.88);border-right:1px solid var(--line);
    backdrop-filter:blur(14px);
  }
  .brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:inherit}
  .seal{
    width:44px;height:44px;display:grid;place-items:center;flex:none;
    background:var(--accent);color:#fff8ee;font-family:var(--serif);font-size:25px;
    border-radius:7px 11px 7px 11px;box-shadow:inset 0 0 0 1px rgba(255,255,255,.22),0 8px 18px -10px rgba(138,42,32,.7);
    transform:rotate(-1.5deg);
  }
  .brand-name{font-family:var(--serif);font-size:23px;letter-spacing:.16em;line-height:1.1}
  .brand-sub{font-size:9px;letter-spacing:.34em;color:var(--ink-3);margin-top:5px;text-transform:uppercase}
  .nav{margin-top:42px;display:grid;gap:5px}
  .nav button{
    display:flex;align-items:center;gap:12px;width:100%;padding:11px 13px;border:0;border-radius:11px;
    background:transparent;color:var(--ink-2);font-size:14px;cursor:pointer;text-align:left;
    transition:background .18s,color .18s,transform .18s;
  }
  .nav button:hover{background:rgba(30,27,22,.055);color:var(--ink);transform:translateX(2px)}
  .nav button.active{background:var(--ink);color:#f7f1e5}
  .nav button.active .nav-dot{background:var(--accent)}
  .nav-dot{width:5px;height:5px;border-radius:50%;background:transparent;margin-left:auto;transition:background .2s}
  .nav-badge{
    margin-left:auto;min-width:20px;height:20px;padding:0 6px;border-radius:999px;background:var(--accent);
    color:#fff6eb;font-size:10px;display:grid;place-items:center;font-weight:600;
  }
  .rail-foot{margin-top:auto;display:grid;gap:14px}
  .rail-card{
    padding:16px;border:1px solid var(--line);border-radius:15px;
    background:linear-gradient(150deg,rgba(255,255,255,.5),rgba(255,255,255,.12));
  }
  .rail-card-top{display:flex;align-items:center;justify-content:space-between;gap:10px}
  .rail-card-label{font-size:11px;letter-spacing:.14em;color:var(--ink-3)}
  .mini-ring{
    width:58px;height:58px;border-radius:50%;display:grid;place-items:center;position:relative;
    background:conic-gradient(var(--accent) 0%,var(--line-soft) 0);
  }
  .mini-ring::after{content:"";position:absolute;inset:5px;border-radius:50%;background:var(--paper)}
  .mini-ring span{position:relative;z-index:1;font-family:var(--serif);font-size:13px;letter-spacing:.02em}
  .rail-card p{margin:10px 0 0;font-size:12px;line-height:1.6;color:var(--ink-3)}
  .rail-note{font-size:10px;line-height:1.7;color:var(--ink-3);letter-spacing:.02em}
  .shell{margin-left:250px;min-height:100vh;padding:0 42px 100px;position:relative}
  .topbar{height:86px;display:flex;align-items:center;justify-content:space-between;gap:20px}
  .topbar-title{font-size:12px;letter-spacing:.24em;text-transform:uppercase;color:var(--ink-3)}
  .top-actions{display:flex;align-items:center;gap:10px}
  .streak{
    display:inline-flex;align-items:center;gap:7px;padding:7px 12px;border:1px solid var(--line);
    border-radius:999px;font-size:12px;color:var(--ink-2);background:rgba(255,255,255,.28);
  }
  .streak b{font-family:var(--serif);font-size:14px;font-weight:600}
  .avatar{
    width:38px;height:38px;border-radius:50%;border:1px solid var(--line);
    background:var(--paper-deep);display:grid;place-items:center;font-family:var(--serif);font-size:16px;
    cursor:pointer;
  }
  .avatar.is-guest{
    width:auto;min-width:38px;padding:0 13px;border-radius:999px;font-size:13px;letter-spacing:.06em;
  }
  main{max-width:1120px;margin:0 auto}
  .view{display:none}
  .view.active{display:block;animation:viewIn .42s cubic-bezier(.2,.75,.25,1) both}
  @keyframes viewIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
  .eyebrow{
    margin:0 0 10px;font-size:10px;letter-spacing:.28em;text-transform:uppercase;color:var(--accent);
    font-weight:600;
  }
  .eyebrow.muted{color:var(--ink-3)}
  .page-head{display:flex;align-items:flex-end;justify-content:space-between;gap:26px;margin:6px 0 30px}
  .page-head h1,.home-head h1{
    font-family:var(--serif);font-weight:600;font-size:clamp(32px,3.3vw,46px);line-height:1.28;
    letter-spacing:.015em;margin:0;
  }
  .lede{margin:12px 0 0;max-width:560px;color:var(--ink-2);font-size:14px;line-height:1.9}
  .date-stamp{font-family:var(--serif);font-size:14px;color:var(--ink-3);white-space:nowrap}
  .home-grid{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(270px,.72fr);gap:20px;align-items:stretch}
  .continue-card{
    position:relative;display:grid;grid-template-columns:1.15fr .85fr;min-height:330px;overflow:hidden;
    background:#16211f;color:#f4efe2;border-radius:24px;box-shadow:var(--shadow);
  }
  .continue-copy{padding:32px 30px;display:flex;flex-direction:column;align-items:flex-start;position:relative;z-index:2}
  .continue-copy .eyebrow{color:#d9a48e}
  .continue-title{font-family:var(--serif);font-size:clamp(27px,2.6vw,38px);line-height:1.28;margin:8px 0 12px;letter-spacing:.03em}
  .continue-blurb{font-size:13px;line-height:1.85;color:rgba(244,239,226,.7);margin:0;max-width:310px}
  .continue-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
  .dark-chip{
    padding:5px 9px;border:1px solid rgba(244,239,226,.18);border-radius:999px;font-size:10px;
    letter-spacing:.08em;color:rgba(244,239,226,.72);
  }
  .continue-actions{margin-top:auto;padding-top:22px;display:flex;align-items:center;gap:14px}
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:999px;
    padding:12px 20px;font-size:13px;font-weight:600;letter-spacing:.03em;cursor:pointer;
    transition:transform .18s,box-shadow .18s,background .18s,color .18s;text-decoration:none;
  }
  .btn:hover{transform:translateY(-1px)}
  .btn:active{transform:translateY(0)}
  .btn-cream{background:#f4efe2;color:#1d2926;box-shadow:0 12px 24px -16px rgba(0,0,0,.8)}
  .btn-ink{background:var(--ink);color:#f7f1e5}
  .btn-ink:hover{background:#332e26}
  .btn-accent{background:var(--accent);color:#fff7ee;box-shadow:0 14px 28px -18px rgba(138,42,32,.9)}
  .btn-accent:hover{background:var(--accent-deep)}
  .btn-ghost{background:transparent;border:1px solid var(--line);color:var(--ink-2)}
  .btn-ghost:hover{border-color:var(--ink-3);background:rgba(255,255,255,.28)}
  .btn-quiet{background:transparent;color:var(--ink-3);padding-left:4px;padding-right:4px}
  .btn-sm{padding:9px 15px;font-size:12px}
  .btn[disabled]{opacity:.42;cursor:not-allowed;transform:none;box-shadow:none}
  .continue-progress{font-size:11px;color:rgba(244,239,226,.55);letter-spacing:.06em}
  .continue-cover{position:relative;min-height:100%;overflow:hidden}
  .continue-cover .cover-art{position:absolute;inset:0;width:100%;height:100%}
  .continue-cover::after{
    content:"";position:absolute;inset:0;
    background:linear-gradient(90deg,#16211f 0%,rgba(22,33,31,.55) 22%,rgba(22,33,31,0) 62%);
  }
  .cover-badge{
    position:absolute;left:18px;top:18px;z-index:2;padding:7px 10px;border-radius:8px;
    background:rgba(244,239,226,.92);color:#17211f;font-size:10px;letter-spacing:.14em;font-weight:700;
  }
  .today-card{
    border:1px solid var(--line);border-radius:24px;background:var(--card);padding:24px;
    display:flex;flex-direction:column;box-shadow:var(--shadow-soft);
  }
  .today-card-head{display:flex;align-items:flex-start;justify-content:space-between;gap:10px}
  .today-card-head h2{font-family:var(--serif);font-size:20px;margin:0;font-weight:600}
  .today-card-head span{font-size:11px;color:var(--ink-3)}
  .big-ring{
    width:138px;height:138px;border-radius:50%;margin:20px auto 12px;position:relative;
    display:grid;place-items:center;background:conic-gradient(var(--accent) 0%,var(--line-soft) 0);
  }
  .big-ring::after{content:"";position:absolute;inset:8px;border-radius:50%;background:var(--card)}
  .big-ring-inner{position:relative;z-index:1;text-align:center}
  .big-ring-inner b{display:block;font-family:var(--serif);font-size:30px;font-weight:600;line-height:1.1}
  .big-ring-inner small{display:block;margin-top:3px;font-size:10px;letter-spacing:.12em;color:var(--ink-3)}
  .today-due{
    display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;
    padding-top:16px;border-top:1px solid var(--line-soft);
  }
  .today-due p{margin:0;font-size:12px;color:var(--ink-2)}
  .today-due p b{font-family:var(--serif);font-size:18px;color:var(--ink);margin-right:3px}
  .section-head{display:flex;align-items:baseline;justify-content:space-between;gap:18px;margin:40px 0 18px}
  .section-head h2{font-family:var(--serif);font-size:24px;font-weight:600;margin:0;letter-spacing:.02em}
  .section-head p{margin:0;font-size:12px;color:var(--ink-3)}
  .library-filters{margin:0 0 22px;display:flex;flex-direction:column;gap:10px}
  .filter-row{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
  .filter-row.genres{flex-wrap:nowrap;overflow-x:auto;padding-bottom:4px;scrollbar-width:none}
  .filter-row.genres::-webkit-scrollbar{display:none}
  .filter-label{flex:0 0 auto;font-size:10px;letter-spacing:.18em;color:var(--ink-3);margin-right:2px}
  .filter-pill{
    flex:0 0 auto;border:1px solid var(--line);border-radius:999px;background:rgba(255,255,255,.25);
    padding:6px 12px;font-family:var(--sans);font-size:11px;color:var(--ink-2);cursor:pointer;
    transition:background .18s,color .18s,border-color .18s;
  }
  .filter-pill:hover{border-color:var(--ink-3);color:var(--ink)}
  .filter-pill[aria-pressed="true"]{background:var(--ink);border-color:var(--ink);color:var(--paper)}
  .filter-pill:focus-visible,.filter-help:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
  .filter-help{
    flex:0 0 auto;border:0;background:none;padding:6px 2px;font-family:var(--sans);font-size:11px;
    color:var(--accent-deep);text-decoration:underline;text-underline-offset:3px;cursor:pointer;
  }
  .filter-count{margin:0;font-size:10px;letter-spacing:.08em;color:var(--ink-3)}
  .library-group{margin:0 0 30px}
  .library-group-head{display:flex;align-items:baseline;justify-content:space-between;gap:14px;margin:0 0 12px}
  .library-group-head h3{font-family:var(--serif);font-size:20px;font-weight:600;margin:0}
  .library-group-head span{font-size:10px;color:var(--ink-3);letter-spacing:.06em}
  .story-title-row{display:flex;align-items:center;gap:7px;flex-wrap:wrap}
  .tier-badge{
    display:inline-flex;align-items:center;height:19px;padding:0 7px;border-radius:999px;
    font-family:var(--sans);font-size:9px;letter-spacing:.08em;border:1px solid currentColor;
  }
  .tier-foundation{color:#4f6b46;background:rgba(79,107,70,.08)}
  .tier-core{color:#8a5a2b;background:rgba(138,90,43,.09)}
  .tier-challenge{color:#8a3a30;background:rgba(138,58,48,.08)}
  .library-empty{margin:26px 0 10px}
  .story-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
  .story-card{border:0;background:none;padding:0;text-align:left;cursor:pointer;color:inherit;display:block}
  .story-cover{
    position:relative;aspect-ratio:3/4;border-radius:15px;overflow:hidden;background:var(--paper-deep);
    box-shadow:0 18px 34px -24px rgba(30,27,22,.55);transition:transform .28s,box-shadow .28s;
  }
  .story-card:hover .story-cover{transform:translateY(-5px);box-shadow:0 26px 44px -26px rgba(30,27,22,.62)}
  .story-cover .cover-art{width:100%;height:100%;display:block}
  .story-cover::after{
    content:"";position:absolute;inset:0;
    background:linear-gradient(180deg,transparent 52%,rgba(12,14,13,.55) 100%);
  }
  .story-cover-label{
    position:absolute;left:12px;top:12px;z-index:2;padding:5px 8px;border-radius:6px;
    background:rgba(12,14,13,.55);color:#f7f1e5;font-size:9px;letter-spacing:.13em;
    backdrop-filter:blur(6px);
  }
  .story-cover-title{
    position:absolute;left:14px;right:14px;bottom:13px;z-index:2;color:#fbf7ee;
    font-family:var(--serif);font-size:17px;letter-spacing:.06em;text-shadow:0 1px 12px rgba(0,0,0,.35);
  }
  .story-info{padding:11px 2px 0}
  .story-info h3{font-family:var(--serif);font-size:16px;font-weight:600;margin:0;letter-spacing:.02em}
  .story-info p{margin:5px 0 0;font-size:11px;color:var(--ink-3);letter-spacing:.02em}
  .quote-strip{
    margin-top:46px;padding:28px 0 4px;border-top:1px solid var(--line);
    display:flex;align-items:flex-start;gap:18px;
  }
  .quote-mark{font-family:var(--serif);font-size:58px;line-height:.72;color:var(--accent);opacity:.75}
  .quote-strip blockquote{
    margin:0;font-family:var(--serif);font-size:19px;line-height:1.85;color:var(--ink-2);letter-spacing:.03em;
  }
  .quote-strip cite{display:block;margin-top:7px;font-style:normal;font-size:11px;letter-spacing:.14em;color:var(--ink-3)}
  .crumb{
    display:inline-flex;align-items:center;gap:7px;border:0;background:none;padding:6px 0;margin-bottom:20px;
    color:var(--ink-3);font-size:12px;cursor:pointer;
  }
  .crumb:hover{color:var(--ink)}
  .detail-hero{display:grid;grid-template-columns:300px 1fr;gap:42px;align-items:start}
  .detail-cover{aspect-ratio:3/4;border-radius:20px;overflow:hidden;box-shadow:var(--shadow);position:relative}
  .detail-cover .cover-art{width:100%;height:100%;display:block}
  .detail-copy{padding-top:6px}
  .detail-copy h1{font-family:var(--serif);font-size:clamp(34px,4vw,50px);line-height:1.2;margin:8px 0 14px;font-weight:600;letter-spacing:.03em}
  .detail-sub{font-size:13px;color:var(--ink-3);margin:0 0 18px;letter-spacing:.05em}
  .tag-row{display:flex;flex-wrap:wrap;gap:7px;margin:0 0 22px}
  .tag{padding:5px 9px;border:1px solid var(--line);border-radius:999px;font-size:10px;color:var(--ink-2);background:rgba(255,255,255,.25)}
  .tag.accent{border-color:rgba(178,59,46,.32);color:var(--accent-deep);background:rgba(178,59,46,.06)}
  .detail-intro{font-family:var(--serif);font-size:16px;line-height:1.95;color:var(--ink-2);margin:0 0 24px;max-width:620px}
  .detail-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
  .word-preview{margin-top:26px;padding-top:20px;border-top:1px solid var(--line)}
  .word-preview p{margin:0 0 10px;font-size:10px;letter-spacing:.18em;color:var(--ink-3)}
  .word-preview-list{display:flex;flex-wrap:wrap;gap:7px}
  .word-preview-list button{
    border:1px solid var(--line);background:rgba(255,255,255,.3);border-radius:999px;padding:6px 11px;
    font-family:var(--en);font-size:13px;cursor:pointer;transition:background .18s,border-color .18s;
  }
  .word-preview-list button:hover{background:var(--card);border-color:var(--ink-3)}
  .chapter-panel{margin-top:46px;border-top:1px solid var(--line);padding-top:24px}
  .chapter-panel-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:8px}
  .chapter-panel-head h2{font-family:var(--serif);font-size:22px;margin:0;font-weight:600}
  .chapter-panel-head span{font-size:11px;color:var(--ink-3)}
  .chapter-row{
    width:100%;display:grid;grid-template-columns:50px 1fr auto;gap:14px;align-items:center;
    padding:16px 4px;border:0;border-bottom:1px solid var(--line-soft);background:none;text-align:left;cursor:pointer;
  }
  .chapter-row:hover:not(.locked){background:rgba(255,255,255,.28)}
  .chapter-row.locked{cursor:not-allowed;opacity:.52}
  .chapter-num{font-family:var(--serif);font-size:20px;color:var(--ink-3)}
  .chapter-name{font-size:14px;color:var(--ink)}
  .chapter-name small{display:block;margin-top:3px;font-size:10px;color:var(--ink-3);letter-spacing:.05em}
  .chapter-state{font-size:10px;color:var(--ink-3);display:flex;align-items:center;gap:5px}
  .chapter-state.ready{color:var(--accent)}
  .reader-mode{background:#f6efe2}
  .reader-mode .rail,.reader-mode .topbar,.reader-mode .tabbar{display:none!important}
  .reader-mode .shell{margin-left:0;padding:0;max-width:none}
  .reader-mode main{max-width:none}
  .view-reader{
    --r-bg:#f7f0e3;--r-ink:#241f18;--r-muted:#786d5d;--r-line:rgba(36,31,24,.15);
    --r-accent:#a83a2c;--r-soft:rgba(168,58,44,.08);
    --reader-size:20px;--reader-line:2.02;
    background:var(--r-bg);color:var(--r-ink);min-height:100vh;transition:background .3s,color .3s;
  }
  .view-reader[data-theme="sepia"]{
    --r-bg:#efe2c6;--r-ink:#2b2317;--r-muted:#7d6d52;--r-line:rgba(43,35,23,.16);
    --r-accent:#9c3a28;--r-soft:rgba(156,58,40,.09);
  }
  .view-reader[data-theme="night"]{
    --r-bg:#141617;--r-ink:#ded5c6;--r-muted:#9d9384;--r-line:rgba(222,213,198,.17);
    --r-accent:#df8068;--r-soft:rgba(223,128,104,.10);
  }
  .view-reader[data-size="1"]{--reader-size:18px}
  .view-reader[data-size="2"]{--reader-size:20px}
  .view-reader[data-size="3"]{--reader-size:22px}
  .view-reader[data-size="4"]{--reader-size:24px}
  .view-reader[data-line="1"]{--reader-line:1.78}
  .view-reader[data-line="2"]{--reader-line:2.02}
  .view-reader[data-line="3"]{--reader-line:2.24}
  .reader-progress{position:fixed;left:0;right:0;top:0;height:3px;background:rgba(128,115,96,.14);z-index:40}
  .reader-progress span{display:block;height:100%;width:0;background:var(--r-accent);transition:width .08s linear}
  .reader-bar{
    position:sticky;top:0;z-index:30;display:flex;align-items:center;gap:16px;
    padding:14px max(20px,calc((100vw - 860px)/2));border-bottom:1px solid var(--r-line);
    background:rgba(247,240,227,.86);backdrop-filter:blur(16px);
  }
  .view-reader[data-theme="sepia"] .reader-bar{background:rgba(239,226,198,.88)}
  .view-reader[data-theme="night"] .reader-bar{background:rgba(20,22,23,.88)}
  .reader-back{
    border:0;background:none;display:inline-flex;align-items:center;gap:7px;padding:6px 0;
    color:var(--r-muted);font-size:12px;cursor:pointer;
  }
  .reader-back:hover{color:var(--r-ink)}
  .reader-bar-title{font-size:11px;letter-spacing:.16em;color:var(--r-muted);flex:1;text-align:center;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .reader-bar-actions{display:flex;align-items:center;gap:8px;margin-left:auto}
  .reader-icon-btn{
    width:36px;height:36px;border:1px solid var(--r-line);border-radius:50%;background:transparent;
    display:grid;place-items:center;color:var(--r-muted);cursor:pointer;transition:background .18s,color .18s;
  }
  .reader-icon-btn:hover{background:var(--r-soft);color:var(--r-ink)}
  .reader-gloss-btn{
    display:inline-flex;align-items:center;gap:6px;height:32px;padding:0 10px 0 5px;
    border:1px solid var(--r-line);border-radius:999px;background:transparent;
    font-family:var(--sans);font-size:11px;letter-spacing:.02em;color:var(--r-muted);
    cursor:pointer;white-space:nowrap;transition:background .18s,color .18s,border-color .18s;
  }
  .reader-gloss-btn:hover{background:var(--r-soft);color:var(--r-ink)}
  .reader-gloss-btn:focus-visible{outline:2px solid var(--r-accent);outline-offset:2px}
  .reader-gloss-btn .gloss-mark{
    width:20px;height:20px;border-radius:50%;display:grid;place-items:center;
    background:var(--r-accent);color:#fff;font-size:10px;line-height:1;
    transition:background .18s,color .18s,box-shadow .18s;
  }
  .reader-gloss-btn[aria-pressed="false"]{color:var(--r-muted)}
  .reader-gloss-btn[aria-pressed="false"] .gloss-mark{
    background:transparent;color:var(--r-muted);box-shadow:inset 0 0 0 1px var(--r-line);
  }
  .reader-paper{max-width:720px;margin:0 auto;padding:62px 30px 130px;font-family:var(--serif)}
  .chapter-no{font-family:var(--sans);font-size:11px;letter-spacing:.32em;text-transform:uppercase;color:var(--r-accent);margin:0}
  .chapter-title{font-size:clamp(34px,4.6vw,52px);line-height:1.26;letter-spacing:.03em;margin:12px 0 16px;font-weight:600}
  .chapter-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-family:var(--sans);font-size:11px;color:var(--r-muted);letter-spacing:.06em;margin-bottom:34px}
  .chapter-meta i{width:3px;height:3px;border-radius:50%;background:var(--r-muted);opacity:.55}
  .chapter-body{font-size:var(--reader-size);line-height:var(--reader-line);letter-spacing:.015em;color:var(--r-ink)}
  .chapter-body p{margin:0 0 1.42em;animation:paraIn .55s both}
  .chapter-body p:nth-child(2){animation-delay:.04s}
  .chapter-body p:nth-child(3){animation-delay:.08s}
  .chapter-body p:nth-child(4){animation-delay:.12s}
  .chapter-body p:nth-child(5){animation-delay:.16s}
  .chapter-body p:first-of-type::first-letter{
    float:left;font-size:3.05em;line-height:.86;padding:.08em .13em 0 0;color:var(--r-accent);font-weight:600;
  }
  @keyframes paraIn{from{opacity:0;transform:translateY(7px)}to{opacity:1;transform:none}}
  .w{
    display:inline;border:0;background:none;padding:0;margin:0;color:inherit;font:inherit;cursor:pointer;
    position:relative;border-radius:2px;
  }
  .w .w-en{
    font-family:var(--en);font-size:1.02em;letter-spacing:.01em;margin:0 .1em;
    border-bottom:1px dashed var(--r-accent);padding-bottom:.02em;
    transition:background .18s,color .18s;
  }
  .w:hover .w-en,.w:focus-visible .w-en{background:var(--r-soft);color:var(--r-accent)}
  .w-gloss{
    font-family:var(--sans);font-size:.61em;letter-spacing:0;color:var(--r-muted);
    margin-left:.2em;white-space:nowrap;vertical-align:.06em;
  }
  .view-reader[data-gloss="off"] .w-gloss{display:none}
  .w.flash .w-en{background:var(--r-accent);color:var(--r-bg);border-bottom-color:transparent}
  .chapter-end{margin-top:58px;padding-top:34px;border-top:1px solid var(--r-line);font-family:var(--sans)}
  .chapter-end .eyebrow{color:var(--r-accent)}
  .end-title{font-family:var(--serif);font-size:26px;margin:4px 0 8px;font-weight:600}
  .end-note{font-size:12px;line-height:1.8;color:var(--r-muted);margin:0 0 20px}
  .recall-grid{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 26px}
  .recall-word{
    border:1px solid var(--r-line);background:transparent;border-radius:999px;padding:7px 11px;
    font-family:var(--en);font-size:13px;color:var(--r-ink);cursor:pointer;transition:background .18s,border-color .18s;
  }
  .recall-word:hover{background:var(--r-soft);border-color:var(--r-accent)}
  .recall-word span{font-family:var(--sans);font-size:9px;color:var(--r-muted);margin-left:5px;letter-spacing:.05em}
  .recall-word .recall-zh{font-size:10px;letter-spacing:0;margin-left:7px;color:var(--r-ink);opacity:.72}
  .recall-word .recall-count{font-size:9px;color:var(--r-muted)}
  .end-actions{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
  .end-actions .btn-ghost{border-color:var(--r-line);color:var(--r-muted)}
  .end-actions .btn-ghost:hover{border-color:var(--r-accent);color:var(--r-ink)}
  .end-hint{font-size:10px;color:var(--r-muted);margin:14px 0 0;letter-spacing:.05em}
  .settings-pop{
    position:fixed;top:66px;right:max(16px,calc((100vw - 860px)/2));z-index:50;width:318px;
    background:var(--card);border:1px solid var(--line);border-radius:18px;padding:18px;
    box-shadow:var(--shadow);display:none;
  }
  .settings-pop.open{display:block;animation:popIn .2s cubic-bezier(.2,.8,.2,1)}
  @keyframes popIn{from{opacity:0;transform:translateY(-6px) scale(.98)}to{opacity:1;transform:none}}
  .settings-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
  .settings-head h3{font-family:var(--serif);font-size:18px;margin:0;font-weight:600}
  .settings-close{border:0;background:none;color:var(--ink-3);cursor:pointer;padding:4px}
  .setting-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 0;border-top:1px solid var(--line-soft)}
  .setting-row:first-of-type{border-top:0}
  .setting-row span{font-size:12px;color:var(--ink-2);white-space:nowrap}
  .seg{display:flex;gap:3px;padding:3px;border-radius:9px;background:rgba(30,27,22,.06)}
  .seg button{border:0;background:transparent;border-radius:7px;padding:5px 8px;font-size:10px;color:var(--ink-3);cursor:pointer;white-space:nowrap}
  .seg button.active{background:var(--ink);color:var(--paper)}
  .quiz-wrap,.review-wrap{max-width:760px;margin:0 auto;padding:20px 0 90px}
  .subpage-top{display:flex;align-items:center;gap:16px;margin-bottom:32px}
  .subpage-top .back{border:0;background:none;color:var(--ink-3);cursor:pointer;display:inline-flex;align-items:center;gap:7px;font-size:12px;padding:6px 0}
  .subpage-top .back:hover{color:var(--ink)}
  .quiz-progress{flex:1;height:4px;border-radius:2px;background:var(--line-soft);overflow:hidden}
  .quiz-progress span{display:block;height:100%;width:0;background:var(--accent);border-radius:2px;transition:width .35s}
  .quiz-count{font-size:11px;color:var(--ink-3);letter-spacing:.12em;white-space:nowrap}
  .question-card{background:var(--card);border:1px solid var(--line);border-radius:24px;padding:32px;box-shadow:var(--shadow-soft)}
  .qtype{font-size:10px;letter-spacing:.24em;color:var(--accent);text-transform:uppercase;margin:0 0 12px;font-weight:600}
  .qprompt{font-family:var(--serif);font-size:clamp(22px,2.5vw,30px);line-height:1.7;margin:0 0 26px;letter-spacing:.015em}
  .qprompt .blank{display:inline-block;min-width:104px;border-bottom:2px solid var(--accent);text-align:center;color:var(--accent)}
  .options{display:grid;gap:9px}
  .option{
    display:flex;align-items:center;gap:13px;width:100%;padding:14px 16px;border:1px solid var(--line);
    border-radius:13px;background:rgba(255,255,255,.26);text-align:left;cursor:pointer;
    transition:border-color .18s,background .18s,transform .18s;
  }
  .option:hover:not([disabled]){border-color:var(--ink-3);background:rgba(255,255,255,.55);transform:translateX(2px)}
  .option .letter{
    width:25px;height:25px;border-radius:50%;border:1px solid var(--line);display:grid;place-items:center;
    font-size:10px;color:var(--ink-3);flex:none;letter-spacing:0;
  }
  .option .op-text{font-size:15px;line-height:1.5}
  .option .op-text.en{font-family:var(--en);font-size:17px}
  .option.correct{border-color:var(--moss);background:rgba(111,125,96,.11)}
  .option.correct .letter{border-color:var(--moss);background:var(--moss);color:#f7f1e5}
  .option.wrong{border-color:var(--accent);background:rgba(178,59,46,.08)}
  .option.wrong .letter{border-color:var(--accent);background:var(--accent);color:#fff7ee}
  .option[disabled]{cursor:default}
  .feedback{
    margin-top:20px;padding:18px 20px;border-left:3px solid var(--accent);background:rgba(178,59,46,.055);
    border-radius:0 12px 12px 0;animation:viewIn .3s both;
  }
  .feedback.ok{border-left-color:var(--moss);background:rgba(111,125,96,.07)}
  .feedback b{display:block;font-size:12px;letter-spacing:.06em;margin-bottom:7px}
  .feedback p{margin:0;font-size:13px;line-height:1.8;color:var(--ink-2)}
  .feedback .src{margin-top:9px;font-family:var(--serif);font-size:13px;color:var(--ink-3);line-height:1.8}
  .quiz-actions{display:flex;justify-content:flex-end;margin-top:20px}
  .result-card{background:var(--card);border:1px solid var(--line);border-radius:26px;padding:38px 32px;box-shadow:var(--shadow-soft);text-align:center}
  .result-badge{display:inline-flex;align-items:center;gap:7px;padding:6px 12px;border-radius:999px;background:rgba(111,125,96,.12);color:#4d5b40;font-size:11px;letter-spacing:.1em;margin-bottom:16px}
  .result-badge.fail{background:rgba(178,59,46,.08);color:var(--accent-deep)}
  .score-ring{width:150px;height:150px;border-radius:50%;position:relative;margin:0 auto 18px;display:grid;place-items:center;background:conic-gradient(var(--accent) 0%,var(--line-soft) 0)}
  .score-ring::after{content:"";position:absolute;inset:8px;border-radius:50%;background:var(--card)}
  .score-ring div{position:relative;z-index:1}
  .score-ring b{font-family:var(--serif);font-size:40px;line-height:1;font-weight:600}
  .score-ring small{display:block;margin-top:5px;font-size:10px;color:var(--ink-3);letter-spacing:.1em}
  .result-title{font-family:var(--serif);font-size:28px;margin:0 0 8px;font-weight:600}
  .result-sub{font-size:13px;color:var(--ink-2);line-height:1.8;margin:0 auto 22px;max-width:500px}
  .result-stats{display:flex;justify-content:center;gap:28px;padding:18px 0;border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft);margin:0 0 24px}
  .result-stat b{display:block;font-family:var(--serif);font-size:24px;line-height:1.2}
  .result-stat span{font-size:10px;color:var(--ink-3);letter-spacing:.06em}
  .wrong-panel{text-align:left;margin:0 0 24px}
  .wrong-panel h3{font-size:11px;letter-spacing:.16em;color:var(--ink-3);margin:0 0 10px;font-weight:600}
  .wrong-list{display:flex;flex-wrap:wrap;gap:7px}
  .wrong-chip{border:1px solid var(--line);background:rgba(255,255,255,.3);border-radius:999px;padding:7px 11px;cursor:pointer;font-size:12px;font-family:var(--en)}
  .wrong-chip:hover{border-color:var(--accent);color:var(--accent-deep)}
  .result-actions{display:flex;justify-content:center;flex-wrap:wrap;gap:10px}
  .review-intro{background:var(--card);border:1px solid var(--line);border-radius:26px;padding:36px;box-shadow:var(--shadow-soft);text-align:center}
  .review-intro .big-count{font-family:var(--serif);font-size:76px;line-height:1;color:var(--accent);margin:10px 0 4px;font-weight:600}
  .review-intro h1{font-family:var(--serif);font-size:30px;margin:0 0 10px;font-weight:600}
  .review-intro p{font-size:13px;line-height:1.9;color:var(--ink-2);max-width:460px;margin:0 auto 24px}
  .review-meta{display:flex;justify-content:center;gap:24px;margin:0 0 26px}
  .review-meta div{font-size:10px;color:var(--ink-3);letter-spacing:.06em}
  .review-meta b{display:block;font-family:var(--serif);font-size:20px;color:var(--ink);margin-bottom:3px}
  .review-card{background:var(--card);border:1px solid var(--line);border-radius:26px;padding:32px;box-shadow:var(--shadow-soft)}
  .review-sentence{font-family:var(--serif);font-size:clamp(21px,2.4vw,27px);line-height:1.8;margin:12px 0 24px}
  .review-sentence .blank{display:inline-block;min-width:112px;border-bottom:2px solid var(--accent);text-align:center;color:var(--accent)}
  .rating-row{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-top:18px}
  .rating-btn{border:1px solid var(--line);background:rgba(255,255,255,.3);border-radius:12px;padding:12px 8px;cursor:pointer;text-align:center;transition:border-color .18s,background .18s}
  .rating-btn:hover{border-color:var(--ink-3);background:rgba(255,255,255,.55)}
  .rating-btn b{display:block;font-size:13px;margin-bottom:3px}
  .rating-btn span{font-size:9px;color:var(--ink-3);letter-spacing:.04em}
  .rating-btn[data-rate="0"]:hover{border-color:var(--accent)}
  .rating-btn[data-rate="2"]:hover{border-color:var(--moss)}
  .review-reveal{margin-top:22px;padding-top:20px;border-top:1px solid var(--line-soft);animation:viewIn .3s both}
  .review-word-line{display:flex;align-items:baseline;gap:10px;flex-wrap:wrap;margin-bottom:8px}
  .review-word-line b{font-family:var(--en);font-size:26px;font-weight:600}
  .review-word-line span{font-size:11px;color:var(--ink-3)}
  .review-meaning{font-size:15px;color:var(--ink-2);margin:0 0 8px}
  .review-source{font-family:var(--serif);font-size:13px;line-height:1.85;color:var(--ink-3);margin:0}
  .review-footer{margin-top:16px;font-size:10px;color:var(--ink-3);letter-spacing:.04em}
  .pages-head{margin:6px 0 26px}
  .pages-head h1{font-family:var(--serif);font-size:clamp(32px,3.2vw,44px);margin:0;font-weight:600}
  .stats-strip{
    display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);
    border:1px solid var(--line);border-radius:18px;overflow:hidden;margin-bottom:28px;
  }
  .stat-cell{background:var(--card);padding:18px 22px}
  .stat-cell b{display:block;font-family:var(--serif);font-size:30px;font-weight:600;line-height:1.15}
  .stat-cell span{font-size:10px;color:var(--ink-3);letter-spacing:.08em}
  .notebook-tools{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:16px;flex-wrap:wrap}
  .filter-tabs{display:flex;gap:4px;padding:4px;background:rgba(30,27,22,.055);border-radius:11px}
  .filter-tabs button{border:0;background:transparent;border-radius:8px;padding:7px 12px;font-size:11px;color:var(--ink-3);cursor:pointer}
  .filter-tabs button.active{background:var(--ink);color:var(--paper)}
  .search-box{display:flex;align-items:center;gap:8px;border-bottom:1px solid var(--line);padding:6px 2px;min-width:210px;color:var(--ink-3)}
  .search-box input{border:0;background:transparent;outline:0;font-size:12px;color:var(--ink);width:100%}
  .search-box input::placeholder{color:var(--ink-3)}
  .word-list{display:grid;gap:0;border-top:1px solid var(--line)}
  .word-row{
    display:flex;align-items:center;justify-content:space-between;gap:18px;padding:17px 4px;
    border:0;border-bottom:1px solid var(--line-soft);background:none;text-align:left;cursor:pointer;width:100%;
    transition:background .18s,padding .18s;
  }
  .word-row:hover{background:rgba(255,255,255,.3);padding-left:10px;padding-right:10px}
  .word-main{display:flex;align-items:baseline;gap:10px;flex-wrap:wrap;min-width:0}
  .word-en{font-family:var(--en);font-size:19px;letter-spacing:.01em}
  .word-phon{font-size:10px;color:var(--ink-3)}
  .word-zh{font-size:12px;color:var(--ink-2)}
  .word-side{display:flex;align-items:center;gap:14px;flex:none}
  .mastery-mini{display:flex;gap:3px}
  .mastery-mini i{width:14px;height:4px;border-radius:2px;background:var(--line-soft)}
  .mastery-mini i.on{background:var(--accent)}
  .word-due{font-size:10px;color:var(--ink-3);white-space:nowrap}
  .empty-state{padding:54px 20px;text-align:center;color:var(--ink-3)}
  .empty-state b{display:block;font-family:var(--serif);font-size:22px;color:var(--ink-2);margin-bottom:8px;font-weight:600}
  .empty-state p{font-size:12px;margin:0}
  .me-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:20px;align-items:start}
  .profile-card{background:var(--card);border:1px solid var(--line);border-radius:24px;padding:30px;box-shadow:var(--shadow-soft)}
  .profile-top{display:flex;align-items:center;gap:20px;margin-bottom:24px}
  .profile-avatar{width:84px;height:84px;border-radius:50%;background:var(--paper-deep);border:1px solid var(--line);display:grid;place-items:center;font-family:var(--serif);font-size:34px;color:var(--ink-2)}
  .profile-top h2{font-family:var(--serif);font-size:26px;margin:0 0 5px;font-weight:600}
  .profile-top p{margin:0;font-size:11px;color:var(--ink-3);letter-spacing:.06em}
  .profile-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line-soft);border-radius:12px;overflow:hidden}
  .profile-stat{background:var(--card);padding:14px 10px;text-align:center}
  .profile-stat b{display:block;font-family:var(--serif);font-size:22px;line-height:1.2;font-weight:600}
  .profile-stat span{font-size:9px;color:var(--ink-3)}
  .week-panel{background:var(--card);border:1px solid var(--line);border-radius:24px;padding:24px;box-shadow:var(--shadow-soft)}
  .week-panel h2{font-family:var(--serif);font-size:19px;margin:0 0 4px;font-weight:600}
  .week-panel p{margin:0;font-size:11px;color:var(--ink-3)}
  .week-bars{display:flex;align-items:flex-end;gap:8px;height:120px;margin:22px 0 8px}
  .week-bar{flex:1;display:flex;flex-direction:column;align-items:center;gap:6px;height:100%;justify-content:flex-end}
  .week-bar i{display:block;width:100%;max-width:24px;border-radius:5px 5px 2px 2px;background:var(--line-soft);min-height:3px;transition:height .4s}
  .week-bar.today i{background:var(--accent)}
  .week-bar span{font-size:9px;color:var(--ink-3)}
  .week-total{display:flex;align-items:baseline;gap:7px;margin-top:14px;padding-top:14px;border-top:1px solid var(--line-soft)}
  .week-total b{font-family:var(--serif);font-size:26px;font-weight:600}
  .week-total span{font-size:10px;color:var(--ink-3)}
  .about-card{margin-top:20px;border:1px solid var(--line);border-radius:20px;padding:22px;background:rgba(255,255,255,.26)}
  .about-card h2{font-family:var(--serif);font-size:18px;margin:0 0 8px;font-weight:600}
  .about-card p{font-size:12px;line-height:1.9;color:var(--ink-2);margin:0 0 14px}
  .about-actions{display:flex;gap:10px;flex-wrap:wrap}
  .sheet-backdrop{
    position:fixed;inset:0;z-index:60;background:rgba(22,18,12,.44);backdrop-filter:blur(2px);
    opacity:0;pointer-events:none;transition:opacity .26s;
  }
  .sheet-backdrop.open{opacity:1;pointer-events:auto}
  .sheet{
    position:fixed;left:50%;bottom:0;z-index:70;width:min(560px,100%);max-height:88vh;overflow:auto;
    transform:translate(-50%,104%);transition:transform .34s cubic-bezier(.2,.8,.2,1);
    background:var(--card);border-radius:26px 26px 0 0;padding:26px 26px calc(26px + env(safe-area-inset-bottom));
    box-shadow:0 -24px 80px rgba(0,0,0,.28);
  }
  .sheet.open{transform:translate(-50%,0)}
  .sheet-grip{width:40px;height:4px;border-radius:2px;background:var(--line);margin:0 auto 18px}
  .sheet-close{position:absolute;right:18px;top:18px;border:0;background:rgba(30,27,22,.05);width:32px;height:32px;border-radius:50%;display:grid;place-items:center;color:var(--ink-3);cursor:pointer}
  .sheet-close:hover{background:rgba(30,27,22,.1);color:var(--ink)}
  .tier-explain{
    display:flex;align-items:center;gap:9px;border:0;background:none;padding:0;margin:0 0 20px;
    font-family:var(--sans);font-size:10px;color:var(--ink-3);cursor:pointer;text-align:left;
  }
  .tier-explain:hover{color:var(--ink)}
  .tier-explain:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}
  .recommend-panel{margin-top:46px;border-top:1px solid var(--line);padding-top:8px}
  .rec-grid{grid-template-columns:repeat(3,1fr)}
  .tier-sheet .sheet-title{font-family:var(--serif);font-size:28px;margin:4px 0 18px;font-weight:600}
  .tier-row{padding:16px 0;border-top:1px solid var(--line-soft)}
  .tier-row:first-child{border-top:0}
  .tier-row-head{display:flex;align-items:center;gap:9px;margin-bottom:6px}
  .tier-row-head b{font-family:var(--sans);font-size:11px;color:var(--ink-2)}
  .tier-row p{margin:0;font-size:13px;line-height:1.8;color:var(--ink-2)}
  .tier-prd{margin-top:4px;font-family:var(--sans);font-size:11px;color:var(--ink-3)}
  @media (max-width:720px){.rec-grid{grid-template-columns:1fr}}
  .word-card-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;padding-right:36px}
  .word-card-pos{font-size:10px;letter-spacing:.18em;color:var(--accent);text-transform:uppercase;margin:0 0 3px;font-weight:600}
  .word-card-title{font-family:var(--en);font-size:40px;line-height:1.08;margin:0 0 4px;font-weight:600;letter-spacing:.01em}
  .word-card-phon{display:flex;align-items:center;gap:10px;font-size:12px;color:var(--ink-3)}
  .speak-btn{border:1px solid var(--line);background:transparent;border-radius:999px;width:30px;height:30px;display:grid;place-items:center;cursor:pointer;color:var(--ink-2)}
  .speak-btn:hover{background:var(--paper-deep)}
  .mastery-chip{font-size:10px;padding:6px 9px;border-radius:999px;background:rgba(178,59,46,.08);color:var(--accent-deep);white-space:nowrap}
  .word-card-zh{font-family:var(--serif);font-size:24px;margin:18px 0 4px;line-height:1.5}
  .word-card-en{font-family:var(--en);font-size:13px;color:var(--ink-3);margin:0 0 18px;line-height:1.6}
  .mastery-row{display:flex;align-items:center;gap:10px;padding:12px 0;border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft)}
  .mastery-row span{font-size:10px;color:var(--ink-3);letter-spacing:.06em;white-space:nowrap}
  .mastery-dots{display:flex;gap:4px;flex:1}
  .mastery-dots i{height:5px;border-radius:3px;background:var(--line-soft);flex:1}
  .mastery-dots i.on{background:var(--accent)}
  .example-block{background:rgba(30,27,22,.035);border-radius:14px;padding:16px 18px;margin:18px 0}
  .example-block span{display:block;font-size:9px;letter-spacing:.18em;color:var(--ink-3);margin-bottom:6px}
  .example-block p{font-family:var(--serif);font-size:15px;line-height:1.8;margin:0;color:var(--ink-2)}
  .example-block p b{font-family:var(--en);color:var(--accent-deep);font-weight:600}
  .chip-section{margin:14px 0}
  .chip-section span{display:block;font-size:9px;letter-spacing:.16em;color:var(--ink-3);margin-bottom:7px}
  .chip-section div{display:flex;flex-wrap:wrap;gap:6px}
  .mini-chip{font-family:var(--en);font-size:12px;padding:5px 9px;border-radius:7px;background:rgba(30,27,22,.05);color:var(--ink-2)}
  .word-actions{display:flex;gap:9px;margin-top:20px}
  .word-actions .btn{flex:1}
  .toast{
    position:fixed;left:50%;bottom:30px;z-index:90;transform:translate(-50%,16px);
    background:var(--ink);color:var(--paper);padding:11px 17px;border-radius:999px;font-size:12px;
    box-shadow:0 10px 30px rgba(0,0,0,.22);opacity:0;pointer-events:none;transition:opacity .22s,transform .22s;
    max-width:calc(100vw - 32px);text-align:center;
  }
  @media (max-width:820px){.toast{bottom:calc(78px + env(safe-area-inset-bottom))}}
  .toast.show{opacity:1;transform:translate(-50%,0)}
  .tabbar{display:none}
  .no-scroll{overflow:hidden}
  @media (max-width:1180px){
  }
  @media (max-width:1000px){
    .rail{width:210px;padding:26px 16px 20px}
    .shell{margin-left:210px;padding:0 28px 90px}
    .brand-name{font-size:20px}
    .home-grid{grid-template-columns:1fr;gap:16px}
    .continue-card{grid-template-columns:1.2fr .8fr}
    .today-card{display:grid;grid-template-columns:auto 1fr;gap:18px;align-items:center}
    .today-card-head{grid-column:1/-1}
    .big-ring{margin:0}
    .today-due{margin:0;padding-top:0;border-top:0}
    .me-grid{grid-template-columns:1fr}
    .detail-hero{grid-template-columns:260px 1fr;gap:30px}
  }
  @media (max-width:820px){
    .rail{display:none}
    .shell{margin-left:0;padding:0 18px calc(90px + env(safe-area-inset-bottom))}
    .topbar{height:70px}
    .topbar-title{display:none}
    main{max-width:none}
    .tabbar{
      display:flex;position:fixed;left:0;right:0;bottom:0;z-index:35;
      background:rgba(243,237,225,.94);backdrop-filter:blur(16px);border-top:1px solid var(--line);
      padding-bottom:env(safe-area-inset-bottom);
    }
    .tabbar button{
      flex:1;border:0;background:none;padding:10px 4px 8px;display:flex;flex-direction:column;align-items:center;gap:4px;
      font-size:9px;letter-spacing:.06em;color:var(--ink-3);cursor:pointer;
    }
    .tabbar button.active{color:var(--accent-deep)}
    .tabbar button.active .icon{stroke:var(--accent)}
    .tabbar .tab-badge{position:absolute;transform:translate(12px,-4px);min-width:15px;height:15px;padding:0 4px;border-radius:999px;background:var(--accent);color:#fff;font-size:8px;display:grid;place-items:center}
    .page-head{margin-bottom:22px}
    .page-head h1,.home-head h1{font-size:32px}
    .home-grid{grid-template-columns:1fr}
    .continue-card{grid-template-columns:1fr;min-height:0}
    .continue-cover{position:absolute;inset:0;opacity:.34}
    .continue-cover .cover-badge{display:none}
    .continue-cover::after{background:linear-gradient(180deg,rgba(22,33,31,.4),#16211f 88%)}
    .continue-copy{min-height:330px}
    .continue-copy .continue-cover{display:none}
    .today-card{grid-template-columns:auto 1fr}
    .detail-hero{grid-template-columns:1fr;gap:24px}
    .detail-cover{width:min(280px,72vw);margin:0 auto}
    .detail-copy{padding-top:0}
    .chapter-row{grid-template-columns:42px 1fr auto;gap:8px}
    .stats-strip{grid-template-columns:repeat(3,1fr)}
    .profile-stats{grid-template-columns:repeat(2,1fr)}
    .settings-pop{left:12px;right:12px;top:auto;bottom:12px;width:auto;max-height:80vh;overflow:auto}
    .reader-bar{padding:12px 16px}
    .reader-paper{padding:44px 22px 110px}
    .chapter-title{font-size:34px}
    .feedback,.quiz-actions,.rating-row,.end-actions,.result-actions{scroll-margin-bottom:calc(78px + env(safe-area-inset-bottom))}
    .sheet{border-radius:22px 22px 0 0;padding:22px 20px calc(22px + env(safe-area-inset-bottom))}
    .word-card-title{font-size:34px}
    .question-card,.review-card,.review-intro,.result-card{padding:24px 20px}
    .rating-row{grid-template-columns:repeat(2,1fr)}
    .result-stats{gap:18px}
  }
  @media (max-width:560px){
    .shell{padding-left:14px;padding-right:14px}
    .topbar{height:64px}
    .page-head{display:block}
    .date-stamp{display:none}
    .home-head h1{font-size:31px}
    .continue-copy{padding:26px 22px;min-height:315px}
    .continue-title{font-size:30px}
    .story-grid{gap:12px}
    .story-cover-title{font-size:15px}
    .story-info h3{font-size:15px}
    .today-card{grid-template-columns:1fr;text-align:center}
    .big-ring{margin:4px auto}
    .today-due{justify-content:center}
    .stats-strip{grid-template-columns:1fr;gap:1px}
    .stat-cell{display:flex;align-items:baseline;justify-content:space-between;padding:14px 18px}
    .stat-cell b{font-size:24px}
    .notebook-tools{display:block}
    .search-box{margin-top:12px;min-width:0}
    .word-row{align-items:flex-start;gap:10px;padding:14px 2px}
    .word-side{gap:8px;flex-direction:column;align-items:flex-end}
    .profile-top{gap:14px}
    .profile-avatar{width:66px;height:66px;font-size:27px}
    .reader-paper{padding:38px 18px 100px}
    .reader-bar-title{display:none}
    .chapter-title{font-size:31px}
    .chapter-body{letter-spacing:.005em}
    .chapter-body p:first-of-type::first-letter{font-size:2.7em}
    .recall-grid{gap:6px}
    .end-actions .btn{flex:1;min-width:140px}
    .result-stats{display:grid;grid-template-columns:repeat(3,1fr)}
    .result-stats .result-stat{border:0}
    .review-meta{gap:16px}
    .word-card-head{padding-right:30px}
  }
  @media (max-width:720px){
    .story-grid{grid-template-columns:1fr}
    .library-group-head{flex-direction:column;align-items:flex-start;gap:3px}
  }
  @media (max-width:1099px) and (min-width:721px){
    .story-grid{grid-template-columns:repeat(2,1fr)}
  }
  @media (min-width:1280px){
    .story-grid:not(.rec-grid){grid-template-columns:repeat(4,1fr)}
  }
  @media (prefers-reduced-motion:reduce){
    *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
  }
  @media print{
    .rail,.topbar,.tabbar,.continue-actions,.end-actions,.reader-bar,.settings-pop{display:none!important}
    body{background:#fff}
    .shell{margin:0;padding:0}
  }
    /* ---------- 全书与插图位 ---------- */
  .book-progress{font-size:10px;color:var(--ink-3);letter-spacing:.05em}
  .char-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
  .char-card{border:1px solid var(--line);border-radius:16px;overflow:hidden;background:var(--card);text-align:left;padding:0}
  .char-art{position:relative;aspect-ratio:3/4;overflow:hidden;background:linear-gradient(160deg,var(--paper-deep),var(--paper))}
  .char-art svg{position:absolute;inset:0;width:100%;height:100%}
  .char-art::after{content:"";position:absolute;inset:0;box-shadow:inset 0 0 0 1px rgba(30,27,22,.05)}
  .char-tag{position:absolute;left:9px;top:9px;z-index:2;font-size:8px;letter-spacing:.16em;color:#f7f2e4;background:rgba(18,21,19,.72);padding:3px 6px;border-radius:4px}
  .char-info{padding:10px 12px 12px}
  .char-info b{display:block;font-family:var(--serif);font-size:16px;font-weight:600}
  .char-info span{display:block;margin-top:2px;font-size:10px;color:var(--ink-3);line-height:1.5}
  .char-line{font-family:var(--serif);font-size:11px;color:var(--ink-2);line-height:1.7;margin:8px 0 0;padding-top:8px;border-top:1px solid var(--line-soft)}
  .scene-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
  .scene-slot{position:relative;display:block;width:100%;aspect-ratio:16/9;border:1px solid var(--line);border-radius:14px;overflow:hidden;background:linear-gradient(150deg,#dfd6c3,#f0e8d7);padding:0;cursor:pointer;text-align:left;color:#f6f1e4}
  .scene-slot:hover .scene-art{transform:scale(1.035)}
  .scene-art{position:absolute;inset:0;width:100%;height:100%;transition:transform .5s cubic-bezier(.2,.7,.2,1)}
  .scene-slot::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(12,15,14,.02) 34%,rgba(10,13,12,.72));z-index:1}
  .scene-overlay{position:absolute;left:0;right:0;bottom:0;z-index:2;padding:10px 12px;display:flex;align-items:flex-end;justify-content:space-between;gap:8px}
  .scene-loc{font-family:var(--serif);font-size:13px;line-height:1.45;color:#f6f1e4}
  .scene-loc small{display:block;font-family:var(--sans);font-size:8px;letter-spacing:.14em;color:rgba(246,241,228,.62);margin-bottom:2px}
  .scene-stamp{position:absolute;right:9px;top:9px;z-index:2;width:34px;height:34px;border:1px solid rgba(246,241,228,.62);border-radius:4px;display:grid;place-items:center;font-family:var(--serif);font-size:11px;letter-spacing:.08em;color:rgba(246,241,228,.85);transform:rotate(5deg);background:rgba(30,27,22,.16)}
  .scene-plan{font-size:9px;letter-spacing:.12em;color:rgba(246,241,228,.7);white-space:nowrap}
  .scene-slot.large{border-radius:18px;margin:0 0 34px;cursor:default}
  .scene-slot.large:hover .scene-art{transform:none}
  .scene-slot.large .scene-loc{font-size:16px}
  .scene-slot.large .scene-stamp{width:44px;height:44px;font-size:13px;right:14px;top:14px}
  .scene-slot.large .scene-overlay{padding:15px 18px}
  .scene-slot.large .scene-plan{font-size:10px}
  .reader-scene-wrap{max-width:100%}
  .illustration-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin:40px 0 14px}
  .illustration-head h2{font-family:var(--serif);font-size:22px;margin:0;font-weight:600}
  .illustration-head p{margin:0;font-size:10px;color:var(--ink-3);letter-spacing:.04em}
  .end-actions .btn-quiet{margin-left:2px}
  .reader-chapter-nav{display:flex;justify-content:space-between;align-items:center;gap:10px;margin:0 0 18px;padding:10px 0;border-bottom:1px solid var(--r-line);font-family:var(--sans)}
  .reader-chapter-nav button{border:0;background:none;color:var(--r-muted);font-size:11px;cursor:pointer;padding:5px 0;display:inline-flex;align-items:center;gap:5px}
  .reader-chapter-nav button:hover{color:var(--r-ink)}
  .reader-chapter-nav button[disabled]{opacity:.32;cursor:default}
  .reader-chapter-nav span{font-size:10px;color:var(--r-muted);letter-spacing:.08em}
  .book-filter{border:1px solid var(--line);background:rgba(255,255,255,.25);border-radius:9px;padding:7px 10px;font-size:11px;color:var(--ink-2);max-width:150px}
  .words-toolbar{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:16px}
  .words-toolbar .search-box{flex:1;min-width:180px}
  .word-row .word-book{font-size:9px;color:var(--ink-3);letter-spacing:.06em;border:1px solid var(--line-soft);border-radius:4px;padding:2px 5px;margin-left:2px}
  .review-cap{display:inline-block;margin-top:10px;font-size:10px;letter-spacing:.06em;color:var(--ink-3)}
  .due-note{font-size:10px;color:var(--ink-3);margin-top:8px}
  @media (max-width:1000px){
    .char-grid{grid-template-columns:repeat(2,1fr)}
    .scene-strip{grid-template-columns:repeat(2,1fr)}
  }
  @media (max-width:820px){
    .scene-slot.large{margin-bottom:26px}
  }
  @media (max-width:560px){
    .char-grid{grid-template-columns:repeat(2,1fr);gap:10px}
    .char-info b{font-size:15px}
    .char-line{display:none}
    .scene-strip{display:flex;overflow-x:auto;padding-bottom:4px;scroll-snap-type:x mandatory}
    .scene-strip .scene-slot{min-width:216px;scroll-snap-align:start}
    .scene-slot.large .scene-loc{font-size:14px}
    .words-toolbar .search-box{min-width:140px}
  }
  .qprompt .blank,.review-sentence .blank{color:transparent;letter-spacing:0}
  @media (max-width:560px){
    .continue-actions{flex-direction:column;align-items:stretch;gap:10px}
    .continue-actions .btn{width:100%;justify-content:center}
    .continue-progress{line-height:1.7}
    .section-head{flex-direction:column;align-items:flex-start;gap:5px}
    .section-head p{line-height:1.6}
    .illustration-head p{display:none}
    .detail-cover{width:100%;height:200px;aspect-ratio:auto;margin:0}
    .detail-hero{gap:14px}
    .detail-copy h1{font-size:32px;margin:4px 0 10px}
    .tag-row{margin-bottom:14px}
    .detail-intro{margin-bottom:16px;font-size:15px}
    .detail-actions{width:100%;gap:10px}
    .detail-actions .btn{flex:1;justify-content:center}
  }
  @media (min-width:561px) and (max-width:820px){
    .detail-cover{width:min(420px,100%);height:220px;aspect-ratio:auto;margin:0 auto}
    .detail-hero{gap:16px}
  }
  .words-more{display:flex;justify-content:center;padding:18px 0 6px}
  .scene-art{object-fit:cover}
  .char-art img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
  .w.flush-l{margin-left:.16em}
  .w.flush-r{margin-right:.16em}
  .home-head h1{text-wrap:balance}
  @media (max-width:560px){
    .library-filters{gap:8px;margin-bottom:18px}
    .filter-row{gap:6px}
    .filter-label{font-size:9px;letter-spacing:.14em;margin-right:0}
    .filter-pill{padding:5px 10px;font-size:10px}
    .filter-help{font-size:10px}
    .filter-count{font-size:9px}
  }

  /* ---------- 词级切换：同页承载六级 / 四级，当前词级用主色区分 ---------- */
  .level-row{margin-bottom:2px}
  .words-level-row{margin:-4px 0 16px}
  .level-pill{display:inline-flex;align-items:baseline;gap:6px;padding:7px 14px;font-size:12px;letter-spacing:.02em}
  .level-pill small{font-size:9px;letter-spacing:.08em;color:var(--ink-3)}
  .level-pill[aria-pressed="true"]{background:var(--accent);border-color:var(--accent);color:#fff}
  .level-pill[aria-pressed="true"] small{color:rgba(255,255,255,.78)}
  @media (max-width:560px){
    .level-pill{padding:6px 12px;font-size:11px}
    .level-pill small{font-size:8px}
  }

  /* ---------- 书封背景图：有图走图，无图回落到色板 SVG ---------- */
  img.cover-art{object-fit:cover;object-position:center 42%}
  .continue-cover img.cover-art{object-position:center 36%}
  .story-cover img.cover-art{transition:transform .5s cubic-bezier(.2,.7,.2,1)}
  .story-card:hover .story-cover img.cover-art{transform:scale(1.035)}