/* ===================== デザイントークン ===================== */
:root {
  --bg: #f3f5f8;
  --panel: #ffffff;
  --panel-2: #f6f8fa;
  --panel-3: #eef1f5;
  --border: #dde2e8;
  --border-strong: #c7ced8;
  --text: #1b2330;
  --text-2: #3b4655;
  --muted: #667386;
  --accent: #178a57;
  --accent-soft: #e3f4ec;
  --accent-ink: #0f6b43;
  --info: #2459c4;
  --info-soft: #e7eefb;
  --warn: #9a6300;
  --warn-soft: #fff4dc;
  --danger: #c2372f;
  --code-bg: #eef1f5;
  --code-ink: #1d3a63;
  --shadow: 0 1px 2px rgba(15, 23, 42, .06), 0 4px 16px rgba(15, 23, 42, .06);
  --focus: 0 0 0 3px rgba(36, 89, 196, .28);

  --term-bg: #0d1218;
  --term-bar: #161d26;
  --term-fg: #d4dbe4;
  --term-dim: #7b8796;
  --term-sel: rgba(110, 168, 255, .32);
  --a-k: #4b5563; --a-r: #f2665c; --a-g: #4cc38a; --a-y: #e6b450; --a-b: #6ea8ff; --a-m: #c792ea; --a-c: #5ccfe6; --a-w: #d4dbe4;
  --a-K: #8b95a3; --a-R: #ff8a80; --a-G: #7ee2a8; --a-Y: #ffd479; --a-B: #9cc4ff; --a-M: #e0b3ff; --a-C: #8de6f5; --a-W: #ffffff;

  --font: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic UI", "Meiryo", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "Cascadia Mono", "Consolas", "SFMono-Regular", "Menlo", "Noto Sans Mono", "DejaVu Sans Mono", "BIZ UDGothic", "MS Gothic", monospace;
  --radius: 10px;
  --sidebar-w: 286px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0b0f14; --panel: #121820; --panel-2: #161d27; --panel-3: #1b2430; --border: #253041; --border-strong: #334155;
    --text: #e3e9f1; --text-2: #c3ccd8; --muted: #8c99ab; --accent: #3fb97d; --accent-soft: #12291f; --accent-ink: #7ddcaa;
    --info: #78a6ff; --info-soft: #152238; --warn: #e2b04a; --warn-soft: #2a2213; --danger: #ff7b72; --code-bg: #1b2533; --code-ink: #a8c7ff;
    --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 6px 20px rgba(0, 0, 0, .25); --focus: 0 0 0 3px rgba(120, 166, 255, .35);
    --term-bg: #080b10; --term-bar: #121820;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0b0f14; --panel: #121820; --panel-2: #161d27; --panel-3: #1b2430; --border: #253041; --border-strong: #334155;
  --text: #e3e9f1; --text-2: #c3ccd8; --muted: #8c99ab; --accent: #3fb97d; --accent-soft: #12291f; --accent-ink: #7ddcaa;
  --info: #78a6ff; --info-soft: #152238; --warn: #e2b04a; --warn-soft: #2a2213; --danger: #ff7b72; --code-bg: #1b2533; --code-ink: #a8c7ff;
  --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 6px 20px rgba(0, 0, 0, .25); --focus: 0 0 0 3px rgba(120, 166, 255, .35);
  --term-bg: #080b10; --term-bar: #121820;
  color-scheme: dark;
}

/* ===================== ベース ===================== */
*, *::before, *::after { box-sizing: border-box; }
html, body { height: 100%; }
body { margin: 0; background: var(--bg); color: var(--text); font-family: var(--font); font-size: 14px; line-height: 1.6; -webkit-font-smoothing: antialiased; }
button { font: inherit; color: inherit; }
code { font-family: var(--mono); font-size: .92em; background: var(--code-bg); color: var(--code-ink); padding: .08em .38em; border-radius: 5px; white-space: pre-wrap; word-break: break-all; }
svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.9; stroke-linecap: round; stroke-linejoin: round; flex: none; }
:focus-visible { outline: none; box-shadow: var(--focus); }

.app {
  display: grid; height: 100vh; height: 100dvh;
  grid-template-columns: var(--sidebar-w) minmax(0, 1fr);
  grid-template-rows: auto minmax(0, 1fr);
  grid-template-areas: "top top" "side main";
}

/* ===================== ヘッダー ===================== */
.topbar { grid-area: top; display: flex; align-items: center; gap: 16px; padding: 10px 16px; background: var(--panel); border-bottom: 1px solid var(--border); min-width: 0; }
.brand { display: flex; align-items: center; gap: 10px; min-width: 0; }
.brand-mark { display: grid; place-items: center; width: 32px; height: 32px; border-radius: 8px; background: #0f141a; color: #4cc38a; font-family: var(--mono); font-weight: 700; font-size: 14px; letter-spacing: -1px; flex: none; }
.brand-name { font-weight: 700; font-size: 16px; white-space: nowrap; letter-spacing: .02em; }
.progress { display: flex; align-items: center; gap: 10px; margin-left: auto; min-width: 0; }
.progress-bar { width: 160px; height: 8px; border-radius: 99px; background: var(--panel-3); overflow: hidden; }
.progress-bar span { display: block; height: 100%; width: 0; background: var(--accent); border-radius: 99px; transition: width .4s ease; }
.progress-text { font-size: 12.5px; color: var(--muted); font-variant-numeric: tabular-nums; white-space: nowrap; }
.top-actions { display: flex; align-items: center; gap: 6px; }

.btn { display: inline-flex; align-items: center; gap: 6px; height: 34px; padding: 0 12px; border-radius: 8px; border: 1px solid var(--border); background: var(--panel); cursor: pointer; white-space: nowrap; font-size: 13px; }
.btn:hover { background: var(--panel-2); border-color: var(--border-strong); }
.btn.ghost { border-color: transparent; background: transparent; }
.btn.ghost:hover { background: var(--panel-3); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; font-weight: 600; }
.btn.primary:hover { filter: brightness(1.06); background: var(--accent); }
.btn.small { height: 28px; padding: 0 10px; font-size: 12.5px; }
.btn[disabled] { opacity: .45; cursor: default; }
.icon-btn { display: inline-grid; place-items: center; width: 34px; height: 34px; border-radius: 8px; border: 0; background: transparent; cursor: pointer; color: var(--text-2); }
.icon-btn:hover { background: var(--panel-3); color: var(--text); }
.only-narrow { display: none; }

/* ===================== サイドバー ===================== */
.sidebar { grid-area: side; background: var(--panel); border-right: 1px solid var(--border); display: flex; flex-direction: column; min-height: 0; }
.mode-switch { display: grid; grid-template-columns: 1fr 1fr; gap: 4px; margin: 12px; padding: 4px; background: var(--panel-3); border-radius: 10px; }
.mode-switch button { height: 32px; border: 0; border-radius: 7px; background: transparent; cursor: pointer; font-size: 13px; color: var(--muted); font-weight: 600; }
.mode-switch button.active { background: var(--panel); color: var(--text); box-shadow: 0 1px 2px rgba(0, 0, 0, .12); }
.chapters { overflow-y: auto; padding: 0 8px 24px; flex: 1; min-height: 0; }
.chapter { margin-bottom: 2px; }
.chapter-head { width: 100%; display: grid; grid-template-columns: 26px 1fr auto; align-items: center; gap: 8px; padding: 9px 8px; border: 0; background: transparent; border-radius: 8px; cursor: pointer; text-align: left; }
.chapter-head:hover { background: var(--panel-2); }
.chapter-num { display: grid; place-items: center; width: 24px; height: 24px; border-radius: 7px; background: var(--panel-3); font-size: 12px; font-weight: 700; color: var(--muted); font-variant-numeric: tabular-nums; }
.chapter.complete .chapter-num { background: var(--accent); color: #fff; }
.chapter-title { font-weight: 600; font-size: 13.5px; line-height: 1.35; }
.chapter-count { font-size: 11.5px; color: var(--muted); font-variant-numeric: tabular-nums; }
.chapter-list { list-style: none; margin: 0 0 6px; padding: 0 0 0 20px; display: none; }
.chapter.open .chapter-list { display: block; }
.mission-item { width: 100%; display: grid; grid-template-columns: 18px 1fr; gap: 8px; align-items: center; padding: 6px 8px; border: 0; background: transparent; border-radius: 7px; cursor: pointer; text-align: left; font-size: 13px; color: var(--text-2); line-height: 1.4; }
.mission-item:hover { background: var(--panel-2); color: var(--text); }
.mission-item.current { background: var(--info-soft); color: var(--text); font-weight: 600; }
.mission-item .mark { width: 16px; height: 16px; border-radius: 50%; border: 1.6px solid var(--border-strong); display: grid; place-items: center; }
.mission-item.done .mark { background: var(--accent); border-color: var(--accent); }
.mission-item.done .mark::after { content: ""; width: 7px; height: 4px; border-left: 2px solid #fff; border-bottom: 2px solid #fff; transform: translateY(-1px) rotate(-45deg); }

/* ===================== メイン ===================== */
.main { grid-area: main; display: flex; flex-direction: column; gap: 12px; padding: 14px 16px 16px; min-height: 0; min-width: 0; }
.card { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); padding: 16px 18px; flex: 0 1 auto; min-height: 72px; max-height: 46vh; overflow-y: auto; }
.card.collapsed { max-height: none; }
.card.collapsed .card-body { display: none; }
.card-top { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.eyebrow { font-size: 12px; font-weight: 600; color: var(--muted); letter-spacing: .04em; }
.badge { display: inline-flex; align-items: center; gap: 5px; height: 22px; padding: 0 9px; border-radius: 99px; font-size: 11.5px; font-weight: 700; }
.badge.todo { background: var(--panel-3); color: var(--muted); }
.badge.done { background: var(--accent-soft); color: var(--accent-ink); }
.card-nav { margin-left: auto; display: flex; gap: 4px; }
.card h1 { font-size: 19px; margin: 4px 0 8px; line-height: 1.4; letter-spacing: .01em; }
.goal { margin: 0 0 10px; padding: 10px 14px; border-left: 4px solid var(--info); background: var(--info-soft); border-radius: 0 8px 8px 0; font-size: 14.5px; color: var(--text); }
.learn { margin: 0 0 10px; font-size: 13.5px; color: var(--text-2); }
.learn b { color: var(--text); }
.chips { display: flex; flex-wrap: wrap; gap: 6px; margin: 0 0 10px; }
.chip { font-family: var(--mono); font-size: 12px; border: 1px solid var(--border); background: var(--panel-2); border-radius: 6px; padding: 1px 8px; cursor: pointer; color: var(--text-2); }
.chip:hover { border-color: var(--info); color: var(--info); }
.actions { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.hints { margin: 10px 0 0; padding: 0; list-style: none; display: grid; gap: 6px; }
.hints li { padding: 8px 12px; border-radius: 8px; background: var(--warn-soft); font-size: 13.5px; }
.hints li b { color: var(--warn); margin-right: 6px; font-size: 12px; }
.answer { margin-top: 10px; border: 1px dashed var(--border-strong); border-radius: 8px; padding: 10px 12px; display: grid; gap: 8px; }
.answer-row { display: flex; align-items: flex-start; gap: 10px; }
.answer-row pre { margin: 0; flex: 1; min-width: 0; font-family: var(--mono); font-size: 13px; white-space: pre-wrap; word-break: break-all; background: var(--code-bg); color: var(--code-ink); padding: 6px 10px; border-radius: 6px; }
.answer-note { font-size: 12.5px; color: var(--muted); }
.result { margin-top: 12px; padding: 12px 14px; border-radius: 10px; background: var(--accent-soft); border: 1px solid color-mix(in srgb, var(--accent) 35%, transparent); }
.result h3 { margin: 0 0 4px; font-size: 15px; color: var(--accent-ink); display: flex; align-items: center; gap: 8px; }
.result p { margin: 0 0 10px; font-size: 13.5px; }
.warnbox { margin-top: 10px; padding: 10px 12px; border-radius: 8px; background: var(--warn-soft); color: var(--text); font-size: 13.5px; border-left: 4px solid var(--warn); }
.warnbox p { margin: 0 0 8px; }
.free-intro p { margin: 0 0 8px; color: var(--text-2); }
.free-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 8px; margin-top: 8px; }
.free-grid button { text-align: left; border: 1px solid var(--border); background: var(--panel-2); border-radius: 8px; padding: 8px 10px; cursor: pointer; }
.free-grid button:hover { border-color: var(--info); }
.free-grid code { background: none; padding: 0; }
.free-grid span { display: block; font-size: 12px; color: var(--muted); margin-top: 2px; }
@keyframes pop { 0% { transform: scale(.96); opacity: 0; } 100% { transform: scale(1); opacity: 1; } }
.result.fresh { animation: pop .35s ease-out; }

/* ===================== ターミナル ===================== */
.term-wrap { flex: 1 0 220px; min-height: 220px; display: flex; flex-direction: column; border-radius: var(--radius); overflow: hidden; background: var(--term-bg); box-shadow: var(--shadow); border: 1px solid #000; }
.term-titlebar { display: flex; align-items: center; gap: 12px; height: 34px; padding: 0 12px; background: var(--term-bar); color: var(--term-dim); font-size: 12px; flex: none; border-bottom: 1px solid #000; }
.dots { display: flex; gap: 6px; }
.dots i { width: 10px; height: 10px; border-radius: 50%; background: #3a4350; }
.dots i:nth-child(1) { background: #e9605a; } .dots i:nth-child(2) { background: #e0b44b; } .dots i:nth-child(3) { background: #4fb862; }
.term-title { font-family: var(--mono); color: #b4bfcc; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.term-hint { margin-left: auto; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.term { position: relative; flex: 1; min-height: 0; background: var(--term-bg); color: var(--term-fg); font-family: var(--mono); font-size: 14px; line-height: 1.45; cursor: text; }
.term-scroll { position: absolute; inset: 0; overflow-y: auto; overflow-x: hidden; padding: 10px 12px 14px; }
.term-out, .term-line { white-space: pre-wrap; word-break: break-all; overflow-wrap: anywhere; }
.term-out { margin: 0; font: inherit; }
.term-line { display: flex; align-items: baseline; flex-wrap: wrap; }
.term-line[hidden] { display: none; }
.term-prompt { white-space: pre-wrap; }
.term-input { flex: 1; min-width: 4ch; border: 0; outline: 0; padding: 0; margin: 0; background: transparent; color: var(--term-fg); font: inherit; caret-color: #4cc38a; box-shadow: none; }
.term-input.secret { color: transparent; caret-color: transparent; }
.term-after { color: var(--term-dim); white-space: pre-wrap; }
.term ::selection { background: var(--term-sel); }
.term-scroll::-webkit-scrollbar { width: 10px; }
.term-scroll::-webkit-scrollbar-thumb { background: #2a333f; border-radius: 10px; border: 2px solid var(--term-bg); }
.term-kb { position: absolute; left: 12px; bottom: 6px; width: 2px; height: 1.4em; opacity: 0; border: 0; padding: 0; resize: none; overflow: hidden; color: transparent; background: transparent; font: inherit; }
.term-measure { position: absolute; visibility: hidden; white-space: pre; }

/* ANSI */
.a-b { font-weight: 700; } .a-d { opacity: .62; } .a-i { font-style: italic; } .a-u { text-decoration: underline; text-underline-offset: 2px; }
.a-fg-k { color: var(--a-k); } .a-fg-r { color: var(--a-r); } .a-fg-g { color: var(--a-g); } .a-fg-y { color: var(--a-y); } .a-fg-b { color: var(--a-b); } .a-fg-m { color: var(--a-m); } .a-fg-c { color: var(--a-c); } .a-fg-w { color: var(--a-w); }
.a-fg-K { color: var(--a-K); } .a-fg-R { color: var(--a-R); } .a-fg-G { color: var(--a-G); } .a-fg-Y { color: var(--a-Y); } .a-fg-B { color: var(--a-B); } .a-fg-M { color: var(--a-M); } .a-fg-C { color: var(--a-C); } .a-fg-W { color: var(--a-W); }
.a-bg-k { background: var(--a-k); } .a-bg-r { background: var(--a-r); color: #111; } .a-bg-g { background: var(--a-g); color: #111; } .a-bg-y { background: var(--a-y); color: #111; } .a-bg-b { background: var(--a-b); color: #111; } .a-bg-m { background: var(--a-m); color: #111; } .a-bg-c { background: var(--a-c); color: #111; } .a-bg-w { background: var(--a-w); color: #111; }
.a-inv { background: var(--term-fg); color: var(--term-bg); }
.sys-line { color: var(--term-dim); }

/* オーバーレイ (less / top / vi) */
.term-overlay { position: absolute; inset: 0; background: var(--term-bg); padding: 10px 12px 6px; display: flex; flex-direction: column; overflow: hidden; z-index: 2; }
.term-overlay[hidden] { display: none; }
.ov-body { flex: 1; min-height: 0; overflow: hidden; white-space: pre-wrap; word-break: break-all; }
.ov-row { min-height: 1.45em; }
.ov-status { flex: none; min-height: 1.45em; display: flex; gap: 12px; white-space: pre; }
.ov-status .left { flex: 1; overflow: hidden; text-overflow: ellipsis; }
.ov-status .rev { background: var(--term-fg); color: var(--term-bg); padding: 0 4px; }
.ov-status .err { background: #c2372f; color: #fff; padding: 0 4px; }
.ov-status .ins { font-weight: 700; }
.ov-help { color: var(--term-dim); }
.tilde { color: var(--a-b); }
.lnum { color: #6b7685; }
.cursor { background: #d4dbe4; color: #0d1218; }
.cursor.bar { background: transparent; color: inherit; box-shadow: inset 2px 0 0 #4cc38a; }
.preedit { text-decoration: underline; color: var(--a-Y); }
mark.hl { background: var(--a-y); color: #111; }
.top-head { background: var(--term-fg); color: var(--term-bg); }

/* 特殊キーバー (タッチ端末向け) */
.keybar { display: none; gap: 6px; padding: 6px 8px; background: var(--term-bar); border-top: 1px solid #000; overflow-x: auto; flex: none; }
.keybar button { flex: none; min-width: 44px; height: 34px; padding: 0 10px; border-radius: 7px; border: 1px solid #2c3644; background: #1b232e; color: #d4dbe4; font-family: var(--mono); font-size: 13px; cursor: pointer; }
.keybar button:active { background: #263142; }
@media (pointer: coarse) { .keybar { display: flex; } }

/* ===================== 辞典ドロワー ===================== */
.drawer { position: fixed; top: 0; right: 0; bottom: 0; width: min(560px, 100vw); background: var(--panel); border-left: 1px solid var(--border); box-shadow: -8px 0 30px rgba(0, 0, 0, .15); transform: translateX(105%); transition: transform .25s ease; z-index: 30; display: flex; flex-direction: column; }
.drawer.open { transform: none; }
.drawer-head { display: flex; align-items: center; padding: 14px 16px 6px; }
.drawer-head h2 { margin: 0; font-size: 17px; flex: 1; }
.drawer-search { padding: 6px 16px 12px; border-bottom: 1px solid var(--border); }
.drawer-search input { width: 100%; height: 38px; padding: 0 12px; border: 1px solid var(--border-strong); border-radius: 8px; background: var(--panel-2); color: var(--text); font: inherit; }
.drawer-body { overflow-y: auto; padding: 4px 16px 32px; flex: 1; }
.ref-cat h3 { font-size: 13px; color: var(--muted); margin: 18px 0 6px; letter-spacing: .04em; }
.ref-row { border: 1px solid var(--border); border-radius: 8px; margin-bottom: 6px; background: var(--panel); overflow: hidden; }
.ref-row summary { list-style: none; display: grid; grid-template-columns: 88px 1fr; gap: 4px 10px; padding: 9px 12px; cursor: pointer; align-items: baseline; }
.ref-row summary::-webkit-details-marker { display: none; }
.ref-row summary:hover { background: var(--panel-2); }
.ref-name { font-family: var(--mono); font-weight: 700; color: var(--info); }
.ref-sum { font-size: 13px; }
.ref-ex { grid-column: 2; font-family: var(--mono); font-size: 12px; color: var(--muted); white-space: pre-wrap; word-break: break-all; }
.ref-detail { padding: 4px 12px 12px; border-top: 1px solid var(--border); background: var(--panel-2); font-size: 13px; }
.ref-detail p { margin: 8px 0; color: var(--text-2); }
.ref-detail table { width: 100%; border-collapse: collapse; margin: 6px 0; }
.ref-detail td { padding: 4px 6px; vertical-align: top; border-bottom: 1px solid var(--border); }
.ref-detail td:first-child { font-family: var(--mono); white-space: nowrap; color: var(--code-ink); width: 1%; }
.ref-detail h4 { margin: 10px 0 4px; font-size: 12px; color: var(--muted); }
.ref-exrow { display: flex; gap: 8px; align-items: center; padding: 3px 0; }
.ref-exrow code { flex: 1; }
.ref-exrow span { font-size: 12px; color: var(--muted); }
.ref-empty { color: var(--muted); padding: 20px 0; }

.scrim { position: fixed; inset: 0; background: rgba(8, 12, 18, .4); opacity: 0; pointer-events: none; transition: opacity .2s; z-index: 20; }
.scrim.show { opacity: 1; pointer-events: auto; }

/* ===================== モーダル / トースト ===================== */
.modal-wrap { position: fixed; inset: 0; display: grid; place-items: center; padding: 16px; background: rgba(8, 12, 18, .45); z-index: 40; }
.modal-wrap[hidden] { display: none; }
.modal { width: min(640px, 100%); max-height: 88vh; display: flex; flex-direction: column; background: var(--panel); border-radius: 12px; box-shadow: 0 20px 60px rgba(0, 0, 0, .3); border: 1px solid var(--border); }
.modal-head { display: flex; align-items: center; padding: 14px 16px 8px 20px; }
.modal-head h2 { margin: 0; font-size: 17px; flex: 1; }
.modal-body { overflow-y: auto; padding: 0 20px 20px; font-size: 13.5px; }
.modal-body h3 { font-size: 14px; margin: 18px 0 6px; }
.modal-body p { margin: 4px 0; color: var(--text-2); }
.plain { margin: 0; padding-left: 1.2em; color: var(--text-2); }
.plain li { margin: 3px 0; }
table.keys { border-collapse: collapse; width: 100%; }
table.keys th { text-align: left; font-family: var(--mono); font-weight: 600; white-space: nowrap; padding: 5px 12px 5px 0; vertical-align: top; color: var(--text); font-size: 12.5px; }
table.keys td { padding: 5px 0; color: var(--text-2); border-bottom: 1px solid var(--border); }
table.keys tr:last-child td { border-bottom: 0; }
.toast { position: fixed; left: 50%; bottom: 24px; transform: translate(-50%, 20px); background: #0f1720; color: #fff; padding: 10px 18px; border-radius: 10px; box-shadow: 0 8px 28px rgba(0, 0, 0, .3); font-size: 14px; opacity: 0; pointer-events: none; transition: all .25s ease; z-index: 50; max-width: calc(100vw - 32px); }
.toast.show { opacity: 1; transform: translate(-50%, 0); }
.toast b { color: #7ee2a8; }

/* ===================== レスポンシブ ===================== */
@media (max-width: 1080px) {
  .progress-bar { width: 100px; }
  .term-hint { display: none; }
}
@media (max-width: 860px) {
  .app { grid-template-columns: minmax(0, 1fr); grid-template-areas: "top" "main"; }
  .only-narrow { display: inline-grid; }
  .sidebar { position: fixed; top: 0; bottom: 0; left: 0; width: min(320px, 86vw); z-index: 30; transform: translateX(-105%); transition: transform .25s ease; box-shadow: 8px 0 30px rgba(0, 0, 0, .18); }
  .sidebar.open { transform: none; }
  .topbar { gap: 8px; padding: 8px 10px; }
  .brand-name { font-size: 14.5px; }
  .btn .label { display: none; }
  .btn.ghost { padding: 0 8px; }
  .progress-bar { display: none; }
  .main { padding: 10px 10px 12px; gap: 10px; }
  .card { padding: 12px 14px; max-height: 40vh; }
  .card h1 { font-size: 17px; }
  .term { font-size: 13px; }
}
@media (max-width: 480px) {
  .brand-name { display: none; }
  .progress { margin-left: 0; flex: 1; justify-content: center; }
  .card-nav .btn .label { display: none; }
}