/* ════════════════════════════════════════════════════════════════════
   mext.css — ONE shared stylesheet for BOTH pages
     • dist/index.html  (landing page)   → <link rel="stylesheet" href="../mext.css">
     • index.html       (exam app)       → <link rel="stylesheet" href="mext.css">
   Put this file at the project root (next to index.html).
   Edit a color/font ONCE here and both pages update.
   ════════════════════════════════════════════════════════════════════ */
@import url('https://fonts.googleapis.com/css2?family=Shippori+Mincho:wght@600;700;800&family=Zen+Kaku+Gothic+New:wght@400;500;700&family=IBM+Plex+Mono:wght@400;500;600&display=swap');

:root{
  /* surfaces */
  --paper:#f7f4ee; --paper-2:#efeae0; --sec-bg:#efeae0; --hi:#eef2f9;
  /* ink */
  --ink:#1c2230; --ink2:#5d6470; --ink3:#8a909c; --muted:#5d6470;
  /* brand */
  --indigo:#233a6b; --indigo-2:#2d59b0; --accent:#233a6b; --accent-hover:#2d59b0;
  --shu:#d7402b; --shu-hover:#b8331f;
  /* status / grading */
  --red:#d7402b; --red-bg:#fbe9e6; --green:#1e9e6a; --green-bg:#a9e7c6;
  /* subject lines (both naming styles) */
  --line-m:#2d59b0; --line-e:#1e9e6a; --line-j:#d7402b; --line-s:#e08a00;
  --line-math:#2d59b0; --line-english:#1e9e6a; --line-japanese:#d7402b; --line-science:#e08a00;
  /* board / chrome */
  --board:#16213c; --board-2:#1d2b4e; --board-amber:#ffd9a0;
  /* lines / metrics */
  --border:#ddd6c8; --hairline:#ddd6c8; --radius:14px; --maxw:1140px;
  /* fonts */
  --disp:'Shippori Mincho',serif;
  --body:'Zen Kaku Gothic New','Hiragino Kaku Gothic ProN','Yu Gothic',Meiryo,sans-serif;
  --mono:'IBM Plex Mono',ui-monospace,monospace;
  /* effects */
  --shadow:0 12px 32px rgba(28,34,48,.10);
}

/* ───────────────────────── LANDING PAGE (dist/index.html) ───────────────────────── */
*{box-sizing:border-box;margin:0;padding:0}
  html{scroll-behavior:smooth}
  body{font-family:var(--body);color:var(--ink);background:var(--paper);line-height:1.7;-webkit-font-smoothing:antialiased}
  html[lang="ja"] body{line-height:1.9}
  a{color:inherit;text-decoration:none}
  img{max-width:100%;display:block}
  .wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}

  /* paper grain */
  body::before{content:"";position:fixed;inset:0;z-index:-2;pointer-events:none;opacity:.5;
    background:
      radial-gradient(1px 1px at 18% 32%, rgba(28,34,48,.05) 50%, transparent 51%),
      radial-gradient(1px 1px at 64% 12%, rgba(28,34,48,.04) 50%, transparent 51%),
      radial-gradient(1px 1px at 82% 71%, rgba(28,34,48,.05) 50%, transparent 51%),
      radial-gradient(1px 1px at 36% 86%, rgba(28,34,48,.04) 50%, transparent 51%);
    background-size:220px 220px, 260px 260px, 240px 240px, 280px 280px}

  /* four-line route strip = scroll progress */
  .progress-rail{position:fixed;top:0;left:0;right:0;height:4px;z-index:70;background:var(--hairline)}
  .progress{height:100%;width:0;background:linear-gradient(90deg,var(--line-m) 0 25%,var(--line-e) 25% 50%,var(--line-j) 50% 75%,var(--line-s) 75% 100%)}

  /* ---------- buttons ---------- */
  .btn{display:inline-flex;align-items:center;gap:10px;font-weight:700;border-radius:8px;padding:14px 26px;
    transition:transform .18s ease,box-shadow .18s ease,background .18s ease;cursor:pointer;border:none;font-size:15px;font-family:var(--body);letter-spacing:.02em}
  .btn-primary{background:var(--indigo);color:#fff;box-shadow:0 6px 0 rgba(28,34,48,.18)}
  .btn-primary:hover{transform:translateY(-2px);background:var(--indigo-2)}
  .btn-primary:active{transform:translateY(1px);box-shadow:0 3px 0 rgba(28,34,48,.18)}
  .btn-ghost{background:transparent;color:var(--indigo);border:1.5px solid var(--indigo);border-radius:8px}
  .btn-ghost:hover{background:rgba(35,58,107,.06)}
  .btn .arr{font-family:var(--mono);font-weight:600}

  /* ---------- header: station name plate ---------- */
  header{position:sticky;top:4px;z-index:50;background:rgba(247,244,238,.94);backdrop-filter:blur(10px);border-bottom:1.5px solid var(--ink)}
  .nav{display:flex;align-items:center;justify-content:space-between;height:76px;gap:16px}
  .brand{display:flex;align-items:center;gap:14px;min-width:0}
  .brand img{width:46px;height:46px;border-radius:8px;border:1.5px solid var(--ink)}
  .brand .bt{line-height:1.15}
  .brand .bt b{display:block;font-family:var(--disp);font-size:18px;letter-spacing:.02em;color:var(--ink)}
  .brand .bt span{display:block;font-size:10.5px;letter-spacing:.22em;color:var(--muted);text-transform:uppercase}
  .nav-links{display:flex;align-items:center;gap:30px}
  .nav-links a{font-weight:700;color:var(--ink);font-size:14px;letter-spacing:.04em;position:relative;padding:4px 0}
  .nav-links a:not(.btn)::after{content:"";position:absolute;left:0;bottom:-2px;width:0;height:2.5px;background:var(--shu);transition:width .22s ease}
  .nav-links a:not(.btn):hover::after{width:100%}
  .nav-links .btn{padding:10px 20px;font-size:14px}
  .lang-toggle{display:flex;border:1.5px solid var(--ink);border-radius:8px;overflow:hidden;background:#fff}
  .lang-toggle button{border:none;background:transparent;padding:7px 13px;font-weight:700;font-size:13px;cursor:pointer;color:var(--ink);font-family:var(--body)}
  .lang-toggle button.active{background:var(--ink);color:var(--paper)}
  .menu-btn{display:none;background:none;border:none;font-size:26px;color:var(--ink);cursor:pointer}

  /* ---------- hero ---------- */
  .hero{position:relative;padding:84px 0 70px;overflow:hidden}
  /* rising sun disc */
  .hero::before{content:"";position:absolute;right:-180px;top:-140px;width:560px;height:560px;border-radius:50%;
    background:radial-gradient(circle,rgba(215,64,43,.10),rgba(215,64,43,.035) 58%,transparent 70%);pointer-events:none}
  /* vertical kanji column */
  .tategaki{position:absolute;top:80px;right:26px;writing-mode:vertical-rl;font-family:var(--disp);font-weight:700;
    font-size:24px;letter-spacing:.45em;color:rgba(28,34,48,.16);user-select:none;pointer-events:none}
  .tategaki small{font-size:11px;letter-spacing:.5em;color:rgba(215,64,43,.45)}
  .hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center;position:relative;z-index:2}

  .eyebrow{display:inline-flex;align-items:stretch;border:1.5px solid var(--ink);border-radius:8px;overflow:hidden;margin-bottom:26px;background:#fff}
  .eyebrow .jp{background:var(--ink);color:var(--paper);font-weight:700;padding:7px 14px;font-size:13px;letter-spacing:.1em}
  .eyebrow .en{padding:7px 14px;font-size:12.5px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--ink);display:flex;align-items:center;gap:8px}
  .eyebrow .dot{width:8px;height:8px;border-radius:50%;background:var(--shu);animation:pulse 2s infinite}
  @keyframes pulse{0%{box-shadow:0 0 0 0 rgba(215,64,43,.5)}70%{box-shadow:0 0 0 9px rgba(215,64,43,0)}100%{box-shadow:0 0 0 0 rgba(215,64,43,0)}}

  .hero h1{font-family:var(--disp);font-weight:800;font-size:54px;line-height:1.18;letter-spacing:-.01em;color:var(--ink);margin-bottom:22px}
  html[lang="ja"] .hero h1{font-size:44px;line-height:1.4}
  .hl{background:linear-gradient(transparent 62%, rgba(215,64,43,.28) 62% 94%, transparent 94%);padding:0 .06em}
  .hero p.lead{font-size:17px;color:var(--muted);margin-bottom:32px;max-width:520px}
  .hero-cta{display:flex;gap:14px;flex-wrap:wrap}

  /* hero sign card */
  .hero-art{display:flex;justify-content:center}
  .sign{position:relative;background:#fff;border:1.5px solid var(--ink);border-radius:18px;padding:30px 30px 24px;max-width:360px;width:100%;
    box-shadow:8px 8px 0 rgba(28,34,48,.10);animation:floaty 7s ease-in-out infinite}
  @keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}
  .sign .sign-top{display:flex;justify-content:space-between;align-items:center;border-bottom:1.5px solid var(--hairline);padding-bottom:12px;margin-bottom:18px}
  .sign .sign-top span{font-family:var(--mono);font-size:11px;letter-spacing:.18em;color:var(--muted)}
  .sign img.logo{width:200px;height:200px;margin:0 auto 14px;border-radius:12px}
  .sign figcaption{text-align:center;font-size:12.5px;font-weight:700;letter-spacing:.06em;color:var(--muted)}
  /* hanko stamp */
  .hanko{position:absolute;top:-22px;right:-22px;width:84px;height:84px;border-radius:50%;border:3px solid var(--shu);
    color:var(--shu);display:flex;align-items:center;justify-content:center;font-family:var(--disp);font-weight:800;font-size:26px;
    letter-spacing:.05em;background:rgba(247,244,238,.9);transform:rotate(-12deg);box-shadow:0 4px 14px rgba(215,64,43,.18)}
  .hanko::after{content:"";position:absolute;inset:5px;border:1.5px solid rgba(215,64,43,.55);border-radius:50%}

  /* signage stat strip */
  .stat-strip{margin-top:62px;border:1.5px solid var(--ink);border-radius:var(--radius);background:#fff;
    display:grid;grid-template-columns:repeat(4,1fr);overflow:hidden;position:relative;z-index:2}
  .stat{padding:24px 20px;text-align:center;position:relative}
  .stat + .stat{border-left:1.5px dashed var(--hairline)}
  .stat b{display:block;font-family:var(--disp);font-size:30px;color:var(--indigo);line-height:1.2}
  .stat span{font-size:12.5px;color:var(--muted);font-weight:700;letter-spacing:.05em}
  .stat i{position:absolute;top:0;left:0;right:0;height:4px;font-style:normal}
  .stat:nth-child(1) i{background:var(--line-m)}
  .stat:nth-child(2) i{background:var(--line-e)}
  .stat:nth-child(3) i{background:var(--line-j)}
  .stat:nth-child(4) i{background:var(--line-s)}

  /* ---------- sections ---------- */
  section.block{padding:84px 0}
  .sec-head{max-width:720px;margin-bottom:48px}
  .sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
  .kicker{display:inline-flex;align-items:center;gap:12px;font-weight:700;font-size:12.5px;letter-spacing:.22em;text-transform:uppercase;color:var(--shu);margin-bottom:12px}
  .kicker::before{content:"";width:34px;height:2px;background:var(--shu)}
  .sec-head.center .kicker::after{content:"";width:34px;height:2px;background:var(--shu)}
  .sec-head h2{font-family:var(--disp);font-weight:800;font-size:36px;color:var(--ink);line-height:1.3;margin-bottom:12px}
  .sec-head p{color:var(--muted);font-size:16.5px}

  /* features */
  .cards{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
  .card-feat{background:#fff;border:1.5px solid var(--hairline);border-radius:var(--radius);padding:30px;transition:.22s;position:relative}
  .card-feat:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:var(--ink)}
  .card-feat .glyph{font-family:var(--disp);font-weight:800;font-size:30px;color:var(--indigo);width:58px;height:58px;border:1.5px solid var(--ink);
    border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:18px;background:var(--paper);transition:.22s}
  .card-feat:hover .glyph{background:var(--indigo);color:#fff;transform:rotate(-3deg)}
  .card-feat h3{font-size:18.5px;color:var(--ink);margin-bottom:8px;font-weight:700}
  .card-feat p{color:var(--muted);font-size:14.5px}

  /* ---------- departure board (signature) ---------- */
  .board-wrap{background:var(--board);border-radius:20px;padding:8px;box-shadow:var(--shadow)}
  .board{border:1.5px solid rgba(255,255,255,.14);border-radius:14px;overflow:hidden}
  .board-head{display:grid;grid-template-columns:64px 1.5fr 1fr 110px 90px;gap:14px;align-items:center;
    padding:14px 22px;background:rgba(255,255,255,.05);border-bottom:1px solid rgba(255,255,255,.10);
    font-family:var(--mono);font-size:11px;letter-spacing:.16em;color:#9fb0d6;text-transform:uppercase}
  .b-row{display:grid;grid-template-columns:64px 1.5fr 1fr 110px 90px;gap:14px;align-items:center;
    padding:18px 22px;border-bottom:1px solid rgba(255,255,255,.07);transition:background .18s}
  .b-row:last-child{border-bottom:none}
  .b-row:hover{background:rgba(255,255,255,.05)}
  .line-badge{width:44px;height:44px;border-radius:50%;display:flex;align-items:center;justify-content:center;
    font-family:var(--mono);font-weight:600;font-size:18px;color:#fff;border:2.5px solid #fff}
  .lm{background:var(--line-m)} .le{background:var(--line-e)} .lj{background:var(--line-j)} .ls{background:var(--line-s)}
  .b-sub .ja{display:block;font-family:var(--disp);font-weight:700;font-size:21px;color:#fff;line-height:1.25}
  .b-sub .en{display:block;font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:#9fb0d6}
  .b-desc{color:#b9c5e2;font-size:13.5px}
  .b-when{font-family:var(--mono);font-weight:600;color:#ffd9a0;font-size:14px}
  .b-dur{font-family:var(--mono);color:#9fb0d6;font-size:13px;text-align:right}
  .board-foot{display:flex;justify-content:space-between;align-items:center;padding:13px 22px;background:rgba(255,255,255,.04);
    font-size:12.5px;color:#9fb0d6}
  .board-foot .blink{display:inline-block;width:8px;height:8px;border-radius:50%;background:#ffd9a0;margin-right:8px;animation:blink 1.6s steps(2) infinite;vertical-align:1px}
  @keyframes blink{0%{opacity:1}50%{opacity:.15}100%{opacity:1}}

  /* ---------- steps: platform numbers ---------- */
  .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border:1.5px solid var(--ink);border-radius:var(--radius);overflow:hidden;background:#fff}
  .step{padding:32px 26px;position:relative;transition:.2s}
  .step + .step{border-left:1.5px dashed var(--hairline)}
  .step:hover{background:var(--paper)}
  .step .pnum{font-family:var(--mono);font-weight:600;font-size:13px;color:#fff;background:var(--indigo);border-radius:6px;
    display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;margin-bottom:16px}
  .step h3{font-size:16.5px;color:var(--ink);margin-bottom:6px;font-weight:700}
  .step p{color:var(--muted);font-size:13.5px}

  /* ---------- CTA ---------- */
  .cta-band{position:relative;overflow:hidden;background:var(--indigo);border-radius:20px;padding:64px 54px;text-align:center;color:#fff}
  .cta-band::before{content:"";position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:430px;height:430px;border-radius:50%;
    border:2px solid rgba(255,255,255,.10)}
  .cta-band::after{content:"";position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:560px;height:560px;border-radius:50%;
    border:1.5px solid rgba(255,255,255,.06)}
  .cta-band>*{position:relative;z-index:1}
  .cta-band .stamp{font-family:var(--disp);color:rgba(215,64,43,.0)}
  .cta-band h2{font-family:var(--disp);font-weight:800;font-size:34px;margin-bottom:14px;line-height:1.35}
  .cta-band p{opacity:.85;font-size:16.5px;margin:0 auto 30px;max-width:560px}
  .cta-band .btn-primary{background:#fff;color:var(--indigo);box-shadow:0 6px 0 rgba(0,0,0,.22)}
  .cta-band .btn-ghost{color:#fff;border-color:rgba(255,255,255,.6)}
  .cta-band .btn-ghost:hover{background:rgba(255,255,255,.08)}

  /* ---------- footer ---------- */
  footer{background:var(--ink);color:#c8cdd8;padding:54px 0 28px;margin-top:90px;position:relative}
  footer::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;
    background:linear-gradient(90deg,var(--line-m) 0 25%,var(--line-e) 25% 50%,var(--line-j) 50% 75%,var(--line-s) 75% 100%)}
  .foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:34px;margin-bottom:34px}
  .foot-grid h5{color:#fff;font-size:13px;letter-spacing:.18em;text-transform:uppercase;margin-bottom:16px}
  .foot-grid a{display:block;color:#9aa3b5;font-size:14px;margin-bottom:9px;transition:.15s}
  .foot-grid a:hover{color:#fff;transform:translateX(3px)}
  .foot-brand{display:flex;align-items:center;gap:12px;margin-bottom:14px}
  .foot-brand img{width:42px;height:42px;border-radius:9px;border:1.5px solid rgba(255,255,255,.25)}
  .foot-brand b{color:#fff;font-family:var(--disp);font-size:17px}
  .foot-bottom{border-top:1px solid rgba(255,255,255,.12);padding-top:20px;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:12.5px;color:#7e8798}
  .foot-jp{font-family:var(--disp);letter-spacing:.35em;color:#566075}

  /* ---------- sakura ---------- */
  .sakura{position:fixed;top:-40px;z-index:1;pointer-events:none;opacity:0;animation:fall linear infinite}
  .sakura svg{display:block;width:100%;height:100%}
  @keyframes fall{
    0%{opacity:0;transform:translateY(-8vh) translateX(0) rotate(0deg)}
    12%{opacity:.7}
    88%{opacity:.6}
    100%{opacity:0;transform:translateY(108vh) translateX(70px) rotate(400deg)}
  }

  /* reveal */
  .reveal{opacity:0;transform:translateY(26px);transition:opacity .7s cubic-bezier(.2,.7,.2,1),transform .7s cubic-bezier(.2,.7,.2,1)}
  .reveal.in{opacity:1;transform:none}

  /* back to top: round station sign */
  .to-top{position:fixed;right:22px;bottom:22px;width:52px;height:52px;border-radius:50%;border:2px solid #fff;cursor:pointer;
    background:var(--indigo);color:#fff;font-size:19px;box-shadow:var(--shadow);
    opacity:0;visibility:hidden;transform:translateY(12px);transition:.3s;z-index:60}
  .to-top.show{opacity:1;visibility:visible;transform:none}
  .to-top:hover{background:var(--indigo-2);transform:translateY(-3px)}

  :focus-visible{outline:3px solid var(--shu);outline-offset:2px;border-radius:4px}

  @media(max-width:960px){
    .hero-grid{grid-template-columns:1fr;text-align:center}
    .hero p.lead{margin-left:auto;margin-right:auto}
    .hero-cta{justify-content:center}
    .eyebrow{margin-left:auto;margin-right:auto}
    .tategaki{display:none}
    .hero h1{font-size:38px}
    html[lang="ja"] .hero h1{font-size:32px}
    .stat-strip{grid-template-columns:repeat(2,1fr)}
    .stat:nth-child(3){border-left:none}
    .stat:nth-child(n+3){border-top:1.5px dashed var(--hairline)}
    .cards{grid-template-columns:1fr}
    .steps{grid-template-columns:1fr 1fr}
    .step:nth-child(3){border-left:none}
    .step:nth-child(n+3){border-top:1.5px dashed var(--hairline)}
    .board-head{display:none}
    .b-row{grid-template-columns:50px 1fr;grid-template-rows:auto auto;gap:6px 14px;padding:16px}
    .line-badge{grid-row:span 2;width:40px;height:40px;font-size:16px}
    .b-desc{grid-column:2}
    .b-when,.b-dur{grid-column:2;text-align:left}
    .nav-links{display:none}
    .menu-btn{display:block}
    .foot-grid{grid-template-columns:1fr}
    .cta-band{padding:48px 26px}
  }
  @media(max-width:560px){
    .steps{grid-template-columns:1fr}
    .step + .step{border-left:none;border-top:1.5px dashed var(--hairline)}
  }
  @media(prefers-reduced-motion:reduce){
    *{animation:none !important;transition:none !important}
    .reveal{opacity:1;transform:none}
  }

/* ───────────────────────── EXAM APP (index.html) ───────────────────────── */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'Zen Kaku Gothic New','Hiragino Kaku Gothic ProN',sans-serif;background:var(--paper);color:var(--ink);font-size:22px;line-height:1.65;min-height:100vh}
#hdr{position:sticky;top:0;z-index:100;background:var(--ink);color:#e7ecf6;display:flex;align-items:center;gap:12px;padding:0 20px;height:54px;box-shadow:0 2px 12px rgba(0,0,0,.35);flex-wrap:nowrap;overflow:hidden}
#hdr-title{font-family:'Shippori Mincho',serif;font-size:14px;font-weight:600;letter-spacing:.04em;color:#e7ecf6;margin-right:auto;white-space:nowrap}
.hbtn{background:none;border:1px solid rgba(255,255,255,.2);color:#e7ecf6;padding:5px 13px;border-radius:3px;font-family:'Zen Kaku Gothic New',sans-serif;font-size:14px;cursor:pointer;transition:all .18s;white-space:nowrap}
.hbtn:hover,.hbtn.on{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.5)}
.hbtn.on{background:#233a6b;border-color:#233a6b;color:#fff}
#lang-grp{display:flex;gap:4px;background:rgba(255,255,255,.06);padding:3px;border-radius:4px}
#dash-btn{display:none}
body.exam-mode #dash-btn{display:inline-flex}
body.dashboard-mode #score-box,body.dashboard-mode #tmr-box,body.dashboard-mode #ybar,body.dashboard-mode #studybar,body.dashboard-mode #stats-panel,body.dashboard-mode #result{display:none!important}
body.dashboard-mode #hdr::after{width:0}
#hdr::after{content:'';position:absolute;bottom:0;left:0;height:3px;width:calc(var(--progress-pct, 0) * 1%);background:linear-gradient(90deg,#2d59b0 0 25%,#1e9e6a 25% 50%,#d7402b 50% 75%,#e08a00 75% 100%);transition:width .35s ease;pointer-events:none}
#score-box{display:flex;align-items:center;gap:10px;font-family:'IBM Plex Mono',monospace;font-size:13px;white-space:nowrap}
#score-correct{color:#5fcf9a}
#score-wrong{color:#ff8a73}
#score-left{color:rgba(232,224,204,.5)}
#score-pts{color:#ffd9a0;font-size:15px;letter-spacing:.03em}
#tmr-box{display:flex;align-items:center;gap:8px}
#tmr{font-family:'IBM Plex Mono',monospace;font-size:20px;color:#e7ecf6;letter-spacing:.05em;min-width:62px;text-align:right}
#tmr.warn{color:#ffd9a0;animation:blink 1s infinite}
@keyframes blink{0%,100%{opacity:1}50%{opacity:.4}}
#tmr-btn{background:#233a6b;border:none;color:#fff;padding:5px 13px;border-radius:3px;cursor:pointer;font-family:'Zen Kaku Gothic New',sans-serif;font-size:14px;transition:background .2s}
#tmr-btn:hover{background:#2d59b0}
#ybar{background:var(--sec-bg);border-bottom:1px solid var(--border);padding:8px 20px;display:flex;align-items:center;gap:6px;flex-wrap:wrap}
#ybar span{font-size:12px;color:var(--ink3);font-family:'IBM Plex Mono',monospace;margin-right:4px}
#vbadge{margin-left:auto;font-family:'IBM Plex Mono',monospace;font-size:11px;color:var(--ink3);display:flex;gap:10px;align-items:center;white-space:nowrap}
#vbadge .vb-global{color:var(--ink3)}
#vbadge .vb-sec{color:var(--ink3)}
#vbadge .vb-ok{color:#1e9e6a}
#vbadge .vb-warn{color:#e08a00}
.ybtn{background:none;border:1px solid var(--border);color:var(--ink2);padding:3px 9px;border-radius:2px;font-family:'IBM Plex Mono',monospace;font-size:13px;cursor:pointer;transition:all .15s}
.ybtn:hover:not(:disabled){background:var(--ink);color:#fff;border-color:var(--ink)}
.ybtn.on{background:#233a6b;color:#fff;border-color:#233a6b}
.ybtn:disabled{opacity:.3;cursor:not-allowed;text-decoration:line-through}
#studybar{background:#fff;border-bottom:1px solid var(--border);padding:8px 20px;display:flex;gap:8px;align-items:center;flex-wrap:wrap}
#studybar .hbtn{border-color:var(--border);color:var(--ink2);font-size:13px;padding:4px 10px}
#studybar .hbtn:hover,#studybar .hbtn.on{background:var(--sec-bg);border-color:var(--ink3);color:var(--ink)}
#stats-panel{display:none;background:#fff;border-bottom:1px solid var(--border);padding:18px 20px}
.stats-inner{max-width:820px;margin:0 auto;display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.stat-card{border:1px solid var(--border);border-radius:4px;padding:12px;background:var(--paper)}
.stat-card h3{font-family:'IBM Plex Mono',monospace;font-size:12px;color:var(--ink3);font-weight:500;margin-bottom:6px;letter-spacing:.04em}
.stat-main{font-family:'IBM Plex Mono',monospace;font-size:22px;color:var(--ink)}
.stat-list{font-size:16px;line-height:1.45;color:var(--ink2)}
.stat-list div{display:flex;justify-content:space-between;gap:12px;border-top:1px solid var(--border);padding-top:5px;margin-top:5px}
#main{max-width:820px;margin:0 auto;padding:32px 20px 80px}
body.dashboard-mode #main{max-width:1180px;padding:22px 18px 48px}
#launch{display:flex;flex-direction:column;gap:18px}
.launch-head{display:flex;align-items:end;justify-content:space-between;gap:18px;border-bottom:2px solid var(--ink);padding-bottom:12px}
.launch-eyebrow{font-family:'Shippori Mincho',serif;font-size:11px;letter-spacing:.18em;text-transform:uppercase;color:var(--ink3)}
.launch-head h1{font-size:30px;line-height:1.05;font-weight:600}
.launch-head p{font-size:15px;line-height:1.35;color:var(--ink2);max-width:430px;text-align:right}
.year-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:10px}
.year-card{appearance:none;border:1px solid var(--border);background:#fff;color:var(--ink);border-radius:6px;padding:10px 11px;text-align:left;cursor:pointer;min-height:136px;display:flex;flex-direction:column;gap:7px;transition:transform .16s,box-shadow .16s,border-color .16s}
.year-card:hover{transform:translateY(-2px);box-shadow:0 6px 18px rgba(28,34,48,.12);border-color:var(--accent)}
.year-card-top{display:flex;align-items:flex-start;justify-content:space-between;gap:8px}
.year-card-year{font-family:'IBM Plex Mono',monospace;font-size:23px;line-height:1;color:var(--accent)}
.year-card-meta{font-family:'IBM Plex Mono',monospace;font-size:11px;color:var(--ink3);line-height:1.35;text-align:right}
.year-progress{font-family:'IBM Plex Mono',monospace;font-size:11px;color:var(--ink2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.pill-row{display:flex;flex-wrap:wrap;gap:4px}
.cat-pill,.skill-pill{font-family:'IBM Plex Mono',monospace;border-radius:999px;line-height:1.1;white-space:nowrap}
.cat-pill{font-size:10px;color:var(--ink2);background:var(--sec-bg);border:1px solid var(--border);padding:3px 6px}
.skill-pill{font-size:10px;color:#233a6b;background:#eef2f9;border:1px solid #c3cfe4;padding:3px 6px}
.skill-row{margin-top:auto}
.launch-section{border-top:1px solid var(--border);padding-top:14px}
.launch-section-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:10px}
.launch-section h2{font-size:23px;line-height:1.15;font-weight:600}
.launch-section p{font-size:14px;line-height:1.35;color:var(--ink2);max-width:560px;text-align:right}
.skill-map{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:9px}
.category-map{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:9px;margin-bottom:14px}
.category-card{border:1px solid var(--border);background:var(--sec-bg);border-radius:6px;padding:9px 10px}
.category-name{font-family:'IBM Plex Mono',monospace;font-size:11px;line-height:1.2;color:var(--ink2);min-height:27px}
.category-total{font-family:'IBM Plex Mono',monospace;font-size:21px;line-height:1;color:var(--accent);margin-top:5px}
.skill-card{border:1px solid var(--border);background:#fff;border-radius:6px;padding:9px 10px;min-height:74px;display:flex;flex-direction:column;gap:5px;cursor:pointer;transition:border-color .15s,box-shadow .15s}
.skill-card:hover{border-color:var(--accent);box-shadow:0 2px 8px rgba(28,34,48,.10)}
.skill-card-top{display:flex;justify-content:space-between;gap:8px;align-items:flex-start}
.skill-name{font-family:'IBM Plex Mono',monospace;font-size:12px;line-height:1.2;color:var(--ink)}
.skill-total{font-family:'IBM Plex Mono',monospace;font-size:18px;line-height:1;color:var(--accent);white-space:nowrap;text-align:right}
.skill-total span{display:block;font-size:10px;color:var(--ink3);margin-top:2px}
.skill-years{font-family:'IBM Plex Mono',monospace;font-size:10px;line-height:1.35;color:var(--ink3);overflow-wrap:anywhere}
.skill-bar{position:relative;height:4px;border-radius:999px;background:var(--sec-bg);overflow:hidden;margin-top:auto}
.skill-bar-weight{display:block;position:absolute;inset:0 auto 0 0;height:100%;background:rgba(35,58,107,.22);border-radius:999px}
.skill-bar-mastery{display:block;position:absolute;inset:0 auto 0 0;height:100%;background:#1e9e6a;border-radius:999px;transition:width .3s}
.skill-mastery{font-family:'IBM Plex Mono',monospace;font-size:11px;color:var(--ink2);margin-top:3px;line-height:1.3}
.skill-mastery-empty{color:var(--ink3)}
.dash-controls{display:flex;justify-content:space-between;gap:10px;align-items:center;margin:10px 0 12px;flex-wrap:wrap}
.seg{display:inline-flex;gap:3px;background:#fff;border:1px solid var(--border);border-radius:6px;padding:3px}
.seg button{border:0;background:transparent;color:var(--ink2);font-family:'IBM Plex Mono',monospace;font-size:11px;line-height:1;padding:6px 8px;border-radius:4px;cursor:pointer;white-space:nowrap}
.seg button.on{background:var(--accent);color:#fff}
.dash-note{font-family:'IBM Plex Mono',monospace;font-size:11px;color:var(--ink3)}
.heatmap-wrap{overflow-x:auto;border:1px solid var(--border);border-radius:6px;background:#fff}
.heatmap{min-width:920px}
.heat-row{display:grid;grid-template-columns:168px repeat(var(--hm-years,13),minmax(0,1fr));border-top:1px solid var(--border)}
.heat-row:first-child{border-top:0}
.heat-head{background:var(--sec-bg);position:sticky;top:0;z-index:1}
.heat-label,.heat-year,.heat-cell{font-family:'IBM Plex Mono',monospace;font-size:10px;line-height:1.15;padding:7px 6px;border-left:1px solid var(--border);min-height:30px;display:flex;align-items:center;justify-content:center;text-align:center}
.heat-label{border-left:0;justify-content:flex-start;text-align:left;color:var(--ink);font-size:11px;overflow-wrap:anywhere}
.heat-year{color:var(--ink3)}
.heat-cell{color:var(--ink2);background:rgba(35,58,107,var(--heat-alpha,0))}
.heat-cell.heat-zero{color:var(--ink3);background:#fff}
.heat-actions{display:flex;justify-content:center;margin-top:10px}
.text-btn{border:1px solid var(--border);background:#fff;color:var(--ink2);font-family:'IBM Plex Mono',monospace;font-size:11px;border-radius:4px;padding:7px 10px;cursor:pointer}
.text-btn:hover{border-color:var(--accent);color:var(--accent)}
#no-data{text-align:center;padding:80px 20px;color:var(--ink3);font-style:italic}
#no-data code{font-family:'IBM Plex Mono',monospace;background:var(--sec-bg);padding:2px 6px;border-radius:2px;font-size:14px;font-style:normal}
.exam-hd{text-align:center;padding:36px 0 28px;border-bottom:2px solid var(--ink);margin-bottom:40px}
.exam-hd-sub{font-family:'Shippori Mincho',serif;font-size:12px;letter-spacing:.2em;text-transform:uppercase;color:var(--ink3);margin-bottom:6px}
.exam-hd h2{font-size:26px;font-weight:600;margin-bottom:4px}
.exam-hd p{font-size:14px;color:var(--ink3)}
.lvl-div{text-align:center;padding:28px 0 20px;border-top:2px solid var(--ink);margin:52px 0 36px}
.lvl-div h3{font-family:'Shippori Mincho',serif;font-size:36px;font-weight:600;margin-bottom:4px}
.lvl-div p{font-size:14px;color:var(--ink3);letter-spacing:.08em}
.sec{margin-bottom:52px}
.exam-sec-head{display:flex;align-items:baseline;gap:14px;border-bottom:1px solid var(--border);padding-bottom:8px;margin-bottom:22px}
.sec-num{font-family:'IBM Plex Mono',monospace;font-size:20px;color:#233a6b;min-width:28px}
.sec-instr{font-style:italic;color:var(--ink2);font-size:18px}
.q{margin-bottom:22px;padding:16px 18px;background:#fff;border:1px solid var(--border);border-radius:4px;transition:box-shadow .2s}
.q:hover{box-shadow:0 2px 8px rgba(28,34,48,.08)}
.q-id{font-family:'IBM Plex Mono',monospace;font-size:11px;color:var(--ink3);margin-bottom:5px;letter-spacing:.04em}
.q-text{font-size:20px;margin-bottom:12px;line-height:1.7}
.q-text u,.err-parts u{text-decoration:underline;text-underline-offset:3px}
.q-text i,.err-parts i,.dialogue i,.q-text em,.err-parts em,.dialogue em{font-style:italic}
.dialogue{background:var(--sec-bg);border-left:3px solid var(--border);padding:10px 14px;margin-bottom:12px;border-radius:0 4px 4px 0}
.dline{margin-bottom:5px;font-size:19px;line-height:1.6}
.dline:last-child{margin-bottom:0}
.sp{font-weight:600;color:var(--ink2);margin-right:5px}
.opts{display:grid;grid-template-columns:1fr 1fr;gap:7px}
.opts.long{grid-template-columns:1fr}
.opt{display:flex;align-items:flex-start;gap:9px;padding:9px 13px;border:1.5px solid var(--border);border-radius:3px;cursor:pointer;font-size:19px;line-height:1.5;transition:all .18s;background:#fff;user-select:none}
.opt:hover:not(.correct):not(.wrong){background:var(--hi);border-color:#c8b96e}
.opt-l{font-family:'IBM Plex Mono',monospace;font-size:13px;font-weight:500;color:var(--ink3);min-width:16px;margin-top:1px;flex-shrink:0}
.opt.correct{background:#a9e7c6;border-color:#1e9e6a;font-weight:600;color:#0a5536}
.opt.correct .opt-l{color:#1e9e6a;font-weight:700}
.opt.wrong{background:#fbdde0;border-color:#d7402b;font-weight:600;color:#8a2114}
.opt.wrong .opt-l{color:#d7402b;font-weight:700}.err-parts{font-size:19px;line-height:1.9;margin-bottom:12px}
.espan{display:inline;cursor:pointer;padding:1px 4px 2px;border-radius:2px;border-bottom:2px solid var(--border);transition:all .18s}
.espan:hover:not(.correct):not(.wrong){background:var(--hi);border-color:#c8b96e}
.espan.correct{background:#a9e7c6;border-color:#1e9e6a;border-width:2px;font-weight:600;color:#0a5536}
.espan.wrong{background:#fbdde0;border-color:#d7402b;border-width:2px;font-weight:600;color:#8a2114}
.elbl{font-family:'IBM Plex Mono',monospace;font-size:10px;vertical-align:super;margin-right:2px;opacity:.65}
.passage{background:var(--sec-bg);border:1px solid var(--border);border-radius:4px;padding:20px 22px;margin-bottom:24px;font-size:19px;line-height:1.85}
.passage p{margin-bottom:10px}.passage p:last-child{margin-bottom:0}
.blank-n{font-family:'IBM Plex Mono',monospace;font-size:.78em;font-weight:600;background:#fff;border:1px solid var(--border);border-radius:3px;padding:.12em .5em;margin:0 .15em;vertical-align:.06em;color:#233a6b;white-space:nowrap}
.rpassage{background:var(--sec-bg);border:1px solid var(--border);border-radius:4px;padding:22px 24px;margin-bottom:28px;font-size:19px;line-height:1.85}
.rpassage p{margin-bottom:10px}.rpassage p:last-child{margin-bottom:0}
.rlabel{font-family:'IBM Plex Mono',monospace;font-size:11px;color:var(--ink3);letter-spacing:.08em;margin-bottom:8px;text-transform:uppercase}
/* ── Biology: tables, ASCII figures, multi-blank fills ───────────────────────── */
.bio-table{overflow-x:auto;margin:0 0 20px}
.bio-table-cap{text-align:center;font-weight:600;margin:0 0 8px}
.bio-table-note{text-align:right;font-size:14px;margin:-14px 0 20px}
.bio-table table{border-collapse:collapse;font-size:15px;line-height:1.5;width:100%}
.bio-table th,.bio-table td{border:1px solid var(--border);padding:6px 10px;text-align:left;vertical-align:top}
.bio-table th{background:var(--sec-bg);font-weight:600}
.bio-figure{overflow-x:auto;background:var(--sec-bg);border:1px solid var(--border);border-radius:4px;padding:14px 16px;margin:0 0 22px;font-family:'IBM Plex Mono',monospace;font-size:12.5px;line-height:1.35;white-space:pre;color:var(--ink)}
/* Extracted vector figures: white card (faithful reproduction). Most figures
   carry their own border from the source PDF, so the card is borderless;
   .is-framed adds the site's rounded border for figures that lack their own. */
.bio-figure-svg{margin:0 0 22px;padding:16px;text-align:center;background:#fff;border-radius:8px}
.bio-figure-svg.is-framed{border:1px solid var(--border)}
.bio-figure-svg img{display:inline-block;max-width:100%;height:auto}
.blank-ref{display:flex;flex-wrap:wrap;gap:6px 18px;background:var(--sec-bg);border:1px solid var(--border);border-radius:4px;padding:12px 14px;margin:0 0 16px;font-size:15px;line-height:1.5}
.blank-ref-item b{font-family:'IBM Plex Mono',monospace;color:#233a6b;margin-right:3px}
.blank-rows{display:flex;flex-direction:column;gap:10px}
.blank-row{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.blank-row-n{font-family:'IBM Plex Mono',monospace;font-weight:600;color:#233a6b;min-width:46px}
.blank-opts{display:flex;flex-wrap:wrap;gap:5px}
.blank-opt{font-family:'IBM Plex Mono',monospace;font-size:14px;font-weight:600;min-width:30px;padding:5px 0;border:1.5px solid var(--border);border-radius:5px;background:var(--paper,#fff);color:var(--ink2);cursor:pointer;transition:all .15s;text-align:center}
.blank-opt:hover:not(.correct):not(.wrong){border-color:var(--accent,#233a6b);color:var(--accent,#233a6b)}
.blank-opt.correct{background:#1e9e6a;border-color:#1e9e6a;color:#fff}
.blank-opt.wrong{background:#d7402b;border-color:#d7402b;color:#fff}
.explain-panel{display:none;margin-top:12px;border-top:1px solid var(--border);padding-top:11px;font-size:16px;line-height:1.55;color:var(--ink2)}
.explain-panel.on{display:block}
.explain-meta{font-family:'IBM Plex Mono',monospace;font-size:11px;color:var(--ink3);letter-spacing:.04em;margin-bottom:7px}
.explain-concept{margin:8px 0 14px;padding:0;font-size:18px;line-height:1.5;color:var(--ink);font-weight:500}
.explain-concept::before{content:'Tested idea';display:block;margin-bottom:2px;font-family:'IBM Plex Mono',monospace;font-size:11px;font-weight:500;letter-spacing:.1em;text-transform:uppercase;color:var(--accent)}
.explain-row{position:relative;border:1px solid var(--border);border-left-width:5px;border-radius:4px;padding:9px 11px;margin-top:7px;background:#fff;box-shadow:0 1px 0 rgba(28,34,48,.03)}
.explain-row.good{border-color:#1e9e6a;border-left-color:#1e9e6a;background:#a9e7c6;box-shadow:0 1px 0 rgba(28,34,48,.03),0 0 0 1.5px rgba(13,107,63,.20)}
.explain-row.bad{border-color:#f0c9cb;border-left-color:#d7402b;background:#fbdde0}
.explain-letter{display:inline-flex;align-items:center;margin:0 7px 2px 0;border-radius:999px;padding:2px 7px;font-family:'IBM Plex Mono',monospace;font-size:11px;font-weight:500;letter-spacing:.03em;color:var(--ink)}
.explain-row.good .explain-letter{background:#1e9e6a;color:#ffffff}
.explain-row.bad .explain-letter{background:#d7402b;color:#ffffff}
.explain-term{font-family:'IBM Plex Mono',monospace;font-size:.88em;background:rgba(28,34,48,.06);border:1px solid rgba(28,34,48,.08);border-radius:3px;padding:0 4px;color:var(--ink)}
#notif{display:none;position:fixed;top:68px;left:50%;transform:translateX(-50%);background:var(--ink);color:#e7ecf6;padding:12px 24px;border-radius:4px;font-size:15px;z-index:200;box-shadow:0 4px 20px rgba(0,0,0,.4);border-left:4px solid #ffd9a0;white-space:nowrap}
#result{display:none;position:sticky;bottom:0;z-index:100;background:var(--ink);color:#e7ecf6;text-align:center;padding:16px 20px;font-size:20px;font-family:'Zen Kaku Gothic New',sans-serif;border-top:3px solid #ffd9a0}
#result strong{color:#ffd9a0;font-size:26px;margin:0 6px}
ruby{ruby-position:over}
rt{font-size:.55em;color:var(--ink2)}
hr.sec-sep{border:none;border-top:1px solid var(--border);margin:28px 0}
.q-skill-label{display:none;gap:5px;flex-wrap:wrap;align-items:center;margin-bottom:6px}
body.show-labels .q-skill-label{display:flex}
.q-cat-lbl{font-family:'IBM Plex Mono',monospace;font-size:10px;color:var(--ink3);background:var(--sec-bg);border:1px solid var(--border);border-radius:999px;padding:2px 7px;white-space:nowrap}
.q-tag-lbl{font-family:'IBM Plex Mono',monospace;font-size:10px;color:#233a6b;background:#eef2f9;border:1px solid #c3cfe4;border-radius:999px;padding:2px 7px;white-space:nowrap}
body.drill-mode #ybar,body.drill-mode #studybar,body.drill-mode #stats-panel,body.drill-mode #result{display:none!important}
#drill-header{display:flex;align-items:center;gap:8px;padding:14px 0 18px;border-bottom:1px solid var(--border);margin-bottom:24px;flex-wrap:wrap}
.drill-btn{background:none;border:1px solid var(--border);color:var(--ink3);padding:5px 12px;border-radius:3px;font-family:'Zen Kaku Gothic New',sans-serif;font-size:14px;cursor:pointer;transition:all .16s}
.drill-btn:hover{border-color:var(--ink2);color:var(--ink)}
.drill-btn-exit{border-color:rgba(35,58,107,.3);color:var(--accent)}
.drill-btn-exit:hover{background:var(--red-bg);border-color:var(--accent)}
.drill-counter{font-family:'IBM Plex Mono',monospace;font-size:13px;color:var(--ink3)}
.drill-skill{font-family:'IBM Plex Mono',monospace;font-size:13px;color:var(--ink2);flex:1}
.drill-year{font-family:'IBM Plex Mono',monospace;font-size:11px;color:var(--ink3);letter-spacing:.08em;text-transform:uppercase;margin-bottom:12px}
#drill-rating{margin-top:22px;padding:16px;background:var(--sec-bg);border:1px solid var(--border);border-radius:6px}
.drill-rating-label{font-family:'IBM Plex Mono',monospace;font-size:12px;color:var(--ink3);margin-bottom:10px}
.drill-rating-btns{display:flex;gap:8px}
.fr-actions{margin-top:12px;display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.fr-answer{margin-top:8px;font-size:16px;color:var(--ink3)}
.fr-answer .fr-val{font-family:'IBM Plex Mono',monospace;color:var(--accent)}
.fr-btn{font-family:'IBM Plex Mono',monospace;font-size:13px;padding:7px 12px;border:1px solid var(--border);border-radius:6px;background:var(--sec-bg);cursor:pointer;color:var(--ink)}
.fr-btn:hover{background:var(--hi)}
.fr-btn.right{border-color:#5fcf9a;color:#1e9e6a}
.fr-btn.wrong{border-color:#e69b8e;color:#b8331f}
.fr-done{font-family:'IBM Plex Mono',monospace;font-size:13px}
.fr-done.right{color:#1e9e6a}
.fr-done.wrong{color:#b8331f}
.mastery-panel{margin:8px 0 18px}
.mastery-headline{font-size:18px;margin-bottom:4px}
.mastery-headline strong{color:var(--accent)}
.mastery-sub{font-family:'IBM Plex Mono',monospace;font-size:12px;color:var(--ink3);margin-bottom:16px}
.track-head{margin:26px 0 6px;padding-bottom:8px;border-bottom:2px solid var(--accent)}
.track-head.grey{border-bottom-color:var(--border)}
.track-title{font-family:'Zen Kaku Gothic New',sans-serif;font-size:22px;font-weight:700;line-height:1.1}
.track-head.grey .track-title{color:var(--ink3)}
.track-sub{font-family:'IBM Plex Mono',monospace;font-size:11px;color:var(--ink3);margin-top:3px}
.subj-group-head{font-family:'IBM Plex Mono',monospace;font-size:11px;color:var(--ink3);text-transform:uppercase;letter-spacing:.06em;margin:14px 0 8px}
.subj-row{display:flex;align-items:center;gap:14px;padding:13px 14px;border:1px solid var(--border);border-radius:10px;margin-bottom:10px;cursor:pointer;background:#fff;transition:border-color .15s}
.subj-row:hover{border-color:var(--accent)}
.subj-focus{cursor:pointer;flex:none;width:20px;height:20px;accent-color:var(--accent)}
.subj-body{flex:1}
.subj-top{display:flex;justify-content:space-between;align-items:baseline}
.subj-name{font-size:16px;font-weight:600}
.subj-pct{font-size:17px;font-weight:700;color:var(--accent)}
.subj-bar{height:10px;border-radius:5px;background:#e6e1d4;margin-top:7px;overflow:hidden}
.subj-fill{height:100%;background:var(--accent);border-radius:5px}
.subj-sub{font-family:'IBM Plex Mono',monospace;font-size:11px;color:var(--ink3);margin-top:5px}
.subj-weak{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}
.track-shared-row{display:flex;align-items:center;gap:8px;padding:10px 14px;border:1px solid var(--border);border-radius:10px;margin-bottom:8px;cursor:pointer;background:#fff;transition:border-color .15s}
.track-shared-row:hover{border-color:var(--accent)}
.shared-badge{font-family:'IBM Plex Mono',monospace;font-size:10px;color:var(--ink3);border:1px solid var(--border);border-radius:4px;padding:1px 5px;text-transform:uppercase;letter-spacing:.04em}
.track-shared-meta{margin-left:auto;font-family:'IBM Plex Mono',monospace;font-size:12px;color:var(--ink3)}
.track-placeholder{display:flex;flex-wrap:wrap;gap:8px;margin:12px 0 4px;opacity:.55}
.track-ph-chip{font-size:13px;border:1px dashed var(--border);border-radius:8px;padding:8px 12px;color:var(--ink3)}
.track-ph-note{font-family:'IBM Plex Mono',monospace;font-size:11px;color:var(--ink3);margin-top:4px}
.mweak-btn{font-family:'IBM Plex Mono',monospace;font-size:12px;color:var(--accent);background:var(--sec-bg);border:1px solid var(--border);border-radius:6px;padding:5px 10px;cursor:pointer}
.mweak-btn:hover{background:var(--hi);border-color:var(--accent)}
.mweak-btn .mweak-n{color:var(--ink3)}
.drill-rate-btn{flex:1;padding:10px;border-radius:4px;border:1.5px solid var(--border);background:#fff;font-family:'Zen Kaku Gothic New',sans-serif;font-size:17px;cursor:pointer;transition:all .15s}
.drill-rate-btn.hard{color:#d7402b;border-color:#f0c4bd}.drill-rate-btn.hard:hover{background:#fbe9e6}
.drill-rate-btn.ok{color:var(--ink)}.drill-rate-btn.ok:hover{background:var(--hi)}
.drill-rate-btn.easy{color:#1e9e6a;border-color:#a7dcc1}.drill-rate-btn.easy:hover{background:#a9e7c6}
.drill-end{max-width:440px;margin:72px auto;text-align:center;padding:36px 28px;border:1px solid var(--border);border-radius:8px;background:#fff}
.drill-end-title{font-family:'Shippori Mincho',serif;font-size:26px;font-weight:600;margin-bottom:6px}
.drill-end-score{font-family:'IBM Plex Mono',monospace;font-size:17px;color:var(--accent);margin-bottom:22px}
.drill-end-row{font-size:16px;color:var(--ink2);margin-bottom:7px;padding:8px 14px;border-radius:4px;background:var(--sec-bg)}
.drill-end-row.improved{background:#a9e7c6;color:#1e9e6a}
.drill-end-row.weak{background:#fbe9e6;color:#233a6b}
.drill-end-actions{display:flex;gap:10px;justify-content:center;margin-top:22px}
@media(max-width:980px){.year-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.skill-map{grid-template-columns:repeat(3,minmax(0,1fr))}.category-map{grid-template-columns:repeat(3,minmax(0,1fr))}.launch-head,.launch-section-head{align-items:flex-start;flex-direction:column}.launch-head p,.launch-section p{text-align:left}.dash-controls{align-items:flex-start;flex-direction:column}}
@media(max-width:720px){.stats-inner{grid-template-columns:1fr 1fr}.year-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.skill-map{grid-template-columns:repeat(2,minmax(0,1fr))}.category-map{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:580px){.opts{grid-template-columns:1fr}#hdr{flex-wrap:wrap;height:auto;padding:8px 14px}#hdr-title{width:100%}#main{padding:18px 12px 60px}.stats-inner{grid-template-columns:1fr}.year-grid,.skill-map,.category-map{grid-template-columns:1fr}body.dashboard-mode #main{padding:14px 12px 28px}.launch-head h1{font-size:26px}}
body.home-mode #score-box,body.home-mode #tmr-box,body.home-mode #ybar,body.home-mode #studybar,body.home-mode #stats-panel,body.home-mode #result,body.home-mode #dash-btn,body.home-mode #home-btn{display:none!important}
body.home-mode #main{max-width:960px;padding:40px 20px 80px}
body.book-mode #score-box,body.book-mode #tmr-box,body.book-mode #ybar,body.book-mode #studybar,body.book-mode #stats-panel,body.book-mode #result,body.book-mode #dash-btn{display:none!important}
body.book-mode #main{max-width:860px;padding:24px 20px 80px}
.book-nav-bar{position:sticky;top:54px;background:var(--paper);border-bottom:1px solid var(--border);z-index:90;padding:8px 0 8px;display:flex;align-items:center;gap:10px;margin-bottom:28px}
.book-nav-bar span{font-family:'IBM Plex Mono',monospace;font-size:13px;color:var(--ink2)}
.book-nav-bar .book-nav-total{color:var(--ink3)}
.book-nav-jump{font-family:'IBM Plex Mono',monospace;font-size:13px;border:1px solid var(--border);border-radius:3px;padding:4px 8px;background:#fff;width:90px;color:var(--ink)}
.book-page{margin-bottom:36px;padding-bottom:32px;border-bottom:1px solid var(--border)}
.book-page:last-child{border-bottom:none}
.book-page-num{font-family:'IBM Plex Mono',monospace;font-size:10px;color:var(--ink3);margin-bottom:14px;letter-spacing:.08em;text-transform:uppercase}
.book-content{font-size:18px;line-height:1.8;color:var(--ink)}
.book-content h1{font-size:26px;font-weight:600;margin:1.1em 0 .45em;line-height:1.15}
.book-content h2{font-size:22px;font-weight:600;margin:1.1em 0 .45em;border-bottom:1px solid var(--border);padding-bottom:5px}
.book-content h3{font-size:19px;font-weight:600;margin:.9em 0 .35em}
.book-content h4{font-size:17px;font-weight:600;margin:.8em 0 .3em}
.book-content p{margin-bottom:.75em}
.book-content img{max-width:100%;height:auto;display:block;margin:14px auto;border:1px solid var(--border);border-radius:4px}
.book-img-name{display:block;text-align:center;font-family:'IBM Plex Mono',monospace;font-size:11px;color:var(--ink3);margin-bottom:2px;letter-spacing:.03em}
.book-content table{border-collapse:collapse;width:100%;margin:14px 0;font-size:16px}
.book-content td,.book-content th{border:1px solid var(--border);padding:6px 10px;text-align:left}
.book-content th{background:var(--sec-bg);font-weight:600}
.book-content ul,.book-content ol{padding-left:24px;margin-bottom:.75em}
.book-content li{margin-bottom:.25em}
.book-content blockquote{border-left:3px solid var(--border);padding:6px 16px;margin:10px 0;color:var(--ink2);background:var(--sec-bg);border-radius:0 4px 4px 0}
.book-content pre{background:var(--sec-bg);padding:12px;border-radius:4px;overflow-x:auto;font-family:'IBM Plex Mono',monospace;font-size:14px;margin-bottom:.75em}
.book-content code{font-family:'IBM Plex Mono',monospace;font-size:.85em;background:rgba(28,34,48,.06);border-radius:3px;padding:1px 4px}
.book-content a{color:var(--accent);text-decoration:none}.book-content a:hover{text-decoration:underline}
.book-cards{display:flex;flex-wrap:wrap;gap:10px;margin-top:2px}
.book-card{border:1px solid var(--border);background:#fff;border-radius:6px;padding:14px 16px;cursor:pointer;transition:border-color .15s,box-shadow .15s;min-width:200px}
.book-card:hover{border-color:var(--accent);box-shadow:0 2px 8px rgba(28,34,48,.10);transform:translateY(-1px)}
.book-card-icon{font-size:22px;margin-bottom:6px}
.book-card-title{font-size:16px;font-weight:600;color:var(--ink)}
.book-card-meta{font-family:'IBM Plex Mono',monospace;font-size:11px;color:var(--ink3);margin-top:4px}
#sidebar-overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,.45);z-index:300}
#sidebar-overlay.open{display:block}
#sidebar{position:fixed;top:0;left:0;height:100%;width:272px;background:#16213c;color:#e7ecf6;z-index:301;transform:translateX(-100%);transition:transform .25s cubic-bezier(.4,0,.2,1);display:flex;flex-direction:column}
#sidebar.open{transform:translateX(0)}
#sidebar-head{display:flex;align-items:center;justify-content:space-between;padding:0 16px;height:54px;border-bottom:1px solid rgba(255,255,255,.1);flex-shrink:0}
#sidebar-head span{font-family:'Shippori Mincho',serif;font-size:13px;font-weight:600;letter-spacing:.06em;color:#e7ecf6}
#sidebar-close{background:none;border:none;color:rgba(232,224,204,.55);cursor:pointer;font-size:22px;line-height:1;padding:2px 4px;border-radius:3px;transition:color .15s}
#sidebar-close:hover{color:#e7ecf6}
#sidebar-body{flex:1;overflow-y:auto;padding:18px 14px}
.sb-label{font-family:'IBM Plex Mono',monospace;font-size:10px;letter-spacing:.12em;text-transform:uppercase;color:rgba(232,224,204,.38);margin-bottom:8px}
.sb-btn{display:block;width:100%;background:none;border:1px solid rgba(255,255,255,.13);color:#cdd6e8;padding:9px 13px;border-radius:4px;font-family:'Zen Kaku Gothic New',sans-serif;font-size:16px;cursor:pointer;text-align:left;transition:background .15s,border-color .15s;margin-bottom:6px}
.sb-btn:hover{background:rgba(255,255,255,.09);border-color:rgba(255,255,255,.3)}
#sidebar-toggle{background:none;border:1px solid rgba(255,255,255,.2);color:#e7ecf6;width:32px;height:32px;border-radius:3px;cursor:pointer;display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:background .15s}
#sidebar-toggle:hover{background:rgba(255,255,255,.12)}
#sidebar-toggle svg{width:15px;height:15px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.sb-weak-skills{margin-bottom:4px}
.sb-weak-row{display:flex;justify-content:space-between;align-items:center;padding:5px 0;border-bottom:1px solid rgba(255,255,255,.07)}
.sb-weak-name{font-family:'IBM Plex Mono',monospace;font-size:11px;color:#9fb0d6;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:160px}
.sb-weak-acc{font-family:'IBM Plex Mono',monospace;font-size:12px;color:#ff8a73;font-weight:600;flex-shrink:0}
.sb-lang-row{display:flex;gap:4px;flex-wrap:wrap;margin-top:2px}
.sb-size-btn{background:none;border:1px solid rgba(255,255,255,.15);color:#9fb0d6;padding:5px 11px;border-radius:3px;font-family:'IBM Plex Mono',monospace;font-size:12px;cursor:pointer;transition:background .15s}
.sb-size-btn.on{background:#233a6b;border-color:#233a6b;color:#fff}
.sb-btn-start{background:#233a6b;border-color:#233a6b;color:#fff;font-weight:600}
.sb-btn-start:hover{background:#2d59b0!important;border-color:#2d59b0!important}
.sb-note{font-family:'IBM Plex Mono',monospace;font-size:11px;color:rgba(232,224,204,.38);line-height:1.5;margin-top:2px}
.sb-btn:disabled{opacity:.35;cursor:not-allowed;pointer-events:none}
body.hide-mastered .q.q-is-mastered{display:none!important}
body.hide-ftc .q.q-is-ftc{display:none!important}
.sb-btn.on{background:#233a6b;border-color:#233a6b;color:#fff}
.q-group.group-hidden{display:none!important}
.q-stub{display:none;align-items:center;gap:8px;padding:6px 12px;margin-bottom:8px;background:var(--sec-bg);border:1px solid var(--border);border-radius:4px;font-family:'IBM Plex Mono',monospace;font-size:12px;letter-spacing:.04em;color:var(--ink3);cursor:pointer;user-select:none}
.q-stub:hover{border-color:var(--ink3);color:var(--ink)}
body.hide-mastered .q-stub.stub-mastered{display:flex}
body.hide-ftc .q-stub.stub-ftc{display:flex}
body .q.q-is-mastered.q-unhide{display:block!important}
body .q.q-is-ftc.q-unhide{display:block!important}
body.hide-explanations .explain-panel:not(.explain-force){display:none}
.q{position:relative}
.q-collapse-btn{position:absolute;top:8px;right:10px;background:none;border:none;cursor:pointer;color:var(--ink3);font-size:12px;padding:2px 5px;border-radius:3px;line-height:1;opacity:.7}
.q-collapse-btn:hover{background:var(--sec-bg);opacity:1;color:var(--ink)}
.wo-slots{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:12px}
.wo-slot{min-width:90px;min-height:38px;border:1.5px dashed var(--border);border-radius:4px;display:flex;align-items:center;justify-content:center;gap:4px;font-size:16px;padding:6px 10px;color:var(--ink3);background:var(--sec-bg);transition:all .15s;text-align:center;cursor:default;flex:1 0 auto}
.wo-slot.filled{border-style:solid;border-color:var(--ink3);color:var(--ink);background:#fff;cursor:pointer}
.wo-slot.filled:hover:not(.locked){background:var(--hi);border-color:#c8b96e}
.wo-slot.correct{background:#a9e7c6;border-color:#1e9e6a;color:#0a5536;font-weight:600;cursor:default}
.wo-slot.wrong{background:#fbdde0;border-color:#d7402b;color:#8a2114;cursor:pointer}
.wo-slot.wrong:hover{background:#f5c0b8}
.wo-slot.locked{cursor:default!important;pointer-events:none}
.wo-pool{display:flex;flex-wrap:wrap;gap:7px;margin-bottom:12px}
.wo-chip{border:1.5px solid var(--border);background:#fff;color:var(--ink);border-radius:4px;padding:6px 12px;font-family:'Zen Kaku Gothic New',sans-serif;font-size:17px;cursor:pointer;transition:all .15s;display:inline-flex;align-items:center;gap:5px}
.wo-chip-n{font-family:'IBM Plex Mono',monospace;font-size:12px;color:var(--ink3)}
.wo-chip:hover:not(.placed){background:var(--hi);border-color:#c8b96e}
.wo-chip.placed{opacity:.3;cursor:not-allowed;pointer-events:none;text-decoration:line-through}
.wo-hint{font-family:'IBM Plex Mono',monospace;font-size:12px;color:var(--accent);margin-left:10px}

/* ════ Rail-system upgrades (added by design system) ════ */
.launch-head h1,.launch-section h2,.exam-hd h2,.lvl-div h3,.track-title,.drill-end-title,.mastery-headline,.book-content h1,.book-content h2{font-family:'Shippori Mincho',serif;font-weight:800;letter-spacing:-.01em}
.launch-eyebrow,.exam-hd-sub{color:#d7402b;font-weight:600;font-family:'IBM Plex Mono',monospace;letter-spacing:.16em}
#tmr-btn,.sb-btn-start{box-shadow:0 5px 0 rgba(28,34,48,.18);border-radius:8px;font-family:'Zen Kaku Gothic New',sans-serif;font-weight:700;transition:transform .18s,box-shadow .18s,background .2s}
#tmr-btn:active,.sb-btn-start:active{transform:translateY(2px);box-shadow:0 2px 0 rgba(28,34,48,.18)}
.q,.year-card,.skill-card,.passage,.rpassage,.subj-row,.category-card{border-radius:10px}
.opt{border-radius:8px}
.year-card:hover,.subj-row:hover{box-shadow:0 12px 32px rgba(28,34,48,.10)}
.opt.correct .opt-l{color:#0a5536}

/* fix leftover booklet-gold hover borders -> indigo */
.opt:hover:not(.correct):not(.wrong),.espan:hover:not(.correct):not(.wrong),.wo-slot.filled:hover:not(.locked),.wo-chip:hover:not(.placed){border-color:#233a6b}

/* bubble-sheet answer options (circled letter that fills in when graded) */
.opt{align-items:center}
.opt .opt-l{width:28px;height:28px;min-width:28px;margin-top:0;border-radius:50%;border:1.5px solid var(--ink3);display:inline-flex;align-items:center;justify-content:center;font-size:12px;color:var(--ink2);background:var(--paper);transition:all .18s}
.opt:hover:not(.correct):not(.wrong) .opt-l{border-color:#233a6b;color:#233a6b}
.opt.correct .opt-l{background:#1e9e6a;border-color:#1e9e6a;color:#fff!important;font-weight:700}
.opt.wrong .opt-l{background:#d7402b;border-color:#d7402b;color:#fff;font-weight:700}

/* ════ Bubble answer options (match the showcase) ════ */
.opt{align-items:center;gap:13px;padding:12px 15px}
.opt-l{width:27px;height:27px;min-width:27px;margin-top:0;border-radius:50%;border:1.5px solid var(--ink3);
  display:flex;align-items:center;justify-content:center;background:var(--paper);color:var(--ink2);
  font-family:'IBM Plex Mono',monospace;font-size:13px;font-weight:500;transition:all .18s}
.opt:hover:not(.correct):not(.wrong) .opt-l{border-color:var(--accent);color:var(--accent)}
.opt.correct .opt-l{background:#1e9e6a;border-color:#1e9e6a;color:#fff;font-size:0}
.opt.correct .opt-l::after{content:"✓";font-size:14px}
.opt.wrong .opt-l{background:#d7402b;border-color:#d7402b;color:#fff;font-size:0}
.opt.wrong .opt-l::after{content:"✗";font-size:14px}

/* ── Auth modal + account ───────────────────────────────────────────────── */
#auth-overlay{position:fixed;inset:0;background:rgba(0,0,0,.45);display:none;align-items:center;justify-content:center;z-index:1000}
#auth-modal{background:#fff;color:#1a1a1a;padding:1.4rem;border-radius:10px;width:min(92vw,340px);box-shadow:0 10px 40px rgba(0,0,0,.3)}
#auth-modal h3{margin:.2rem 0 .6rem}
#auth-modal input{display:block;width:100%;margin:.5rem 0;padding:.55rem;border:1px solid #ccc;border-radius:6px;font-size:1rem;box-sizing:border-box}
.auth-msg{min-height:1.2em;color:#c0392b;font-size:.85rem;margin:.3rem 0}
.auth-switch{font-size:.85rem;margin-top:.8rem}
#main .pad{padding:1.2rem}