:root {
  --bg:#f4f1ea; --panel:#fffdf8; --panel-2:#ebe7dd; --text:#181a1f; --muted:#73736f; --line:#d9d4c9;
  --accent:#e84c3d; --accent-2:#c83c31; --good:#299b6b; --warn:#c88521; --bad:#d04a43;
  --shadow:0 18px 50px rgba(32,29,24,.08);
}
html[data-theme="dark"] {
  --bg:#0d0f13; --panel:#15181e; --panel-2:#1d2128; --text:#f3f0e9; --muted:#999da6; --line:#2a2f38;
  --accent:#ff6254; --accent-2:#ff786d; --good:#55c792; --warn:#e1a54f; --bad:#ff7369; --shadow:0 18px 50px rgba(0,0,0,.24);
}
*{box-sizing:border-box} html{scroll-behavior:smooth} body{margin:0;min-height:100vh;background:var(--bg);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;transition:.2s}
button,input,select{font:inherit} button{color:inherit} button,select{cursor:pointer} button:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid color-mix(in srgb,var(--accent) 45%,transparent);outline-offset:2px}
.app-shell{width:min(1180px,calc(100% - 32px));margin:0 auto}.topbar{height:92px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:12px;background:transparent;border:0;padding:0;text-align:left}.brand-mark{display:grid;place-items:center;width:44px;height:44px;border-radius:13px;background:var(--accent);color:#fff;font:700 25px/1 "Yu Gothic","Hiragino Sans",sans-serif;transform:rotate(-3deg)}
.brand-copy{display:flex;flex-direction:column;line-height:1.1}.brand-copy strong{font-size:16px}.brand-copy small{margin-top:5px;color:var(--muted);font-size:11px;letter-spacing:.12em}.topnav{display:flex;align-items:center;gap:8px}.nav-btn{border:0;background:transparent;padding:10px 14px;color:var(--muted);border-radius:10px;font-weight:700}.nav-btn:hover,.nav-btn.active{color:var(--text);background:var(--panel-2)}.icon-btn{width:42px;padding:10px}
main{min-height:calc(100vh - 170px)}.page{display:none;padding:56px 0 36px}.page.active{display:block;animation:pageIn .22s ease both}@keyframes pageIn{from{opacity:0;transform:translateY(5px)}to{opacity:1;transform:none}}
.eyebrow,.step{margin:0 0 10px;text-transform:uppercase;letter-spacing:.14em;font-size:11px;font-weight:850;color:var(--accent)} h1{margin:0;font-size:clamp(42px,7vw,76px);line-height:.98;letter-spacing:-.055em}h1 span{color:var(--muted)}h2{margin:0;letter-spacing:-.025em}.hero-text{color:var(--muted);line-height:1.7;max-width:700px;margin:18px 0 0}.muted{color:var(--muted)}
.panel{background:var(--panel);border:1px solid var(--line);border-radius:20px;padding:24px;box-shadow:var(--shadow)}.panel-heading{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:18px}.panel-heading.split{gap:18px;align-items:center}.panel h2{font-size:24px}
.primary-btn,.secondary-btn{border-radius:12px;border:1px solid transparent;padding:13px 18px;font-weight:850;transition:.15s ease}.primary-btn{background:var(--accent);color:#fff;min-width:160px}.primary-btn:hover{background:var(--accent-2);transform:translateY(-1px)}.primary-btn.big{padding:16px 22px}.primary-btn span{margin-left:12px}.primary-btn.compact{min-width:auto;padding:11px 14px}.secondary-btn{background:var(--panel);border-color:var(--line);color:var(--text)}.secondary-btn:hover{border-color:var(--muted)}.text-btn{border:0;background:var(--panel-2);color:var(--muted);border-radius:8px;padding:8px 10px;font-size:12px;font-weight:780}.text-btn:hover,.text-btn.strong{color:var(--text)}.hidden{display:none!important}

/* Home V2 */
.dashboard-hero{display:grid;grid-template-columns:1.3fr .7fr;gap:28px;align-items:stretch;margin-bottom:18px}.hero-main{padding:28px 0 20px}.hero-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:28px}.rank-card{background:linear-gradient(145deg,color-mix(in srgb,var(--accent) 13%,var(--panel)),var(--panel));border:1px solid color-mix(in srgb,var(--accent) 38%,var(--line));border-radius:28px;padding:28px;box-shadow:var(--shadow);display:grid;grid-template-columns:auto 1fr;gap:18px;align-items:center}.rank-glyph{width:92px;height:92px;border-radius:24px;background:var(--accent);color:#fff;display:grid;place-items:center;font:800 48px/1 "Yu Gothic",sans-serif;transform:rotate(3deg)}.rank-card small,.rank-card span{display:block;color:var(--muted)}.rank-card strong{display:inline;font-size:48px;line-height:1}.rank-card p{grid-column:1/-1;margin:0;color:var(--muted);font-size:12px}.rank-card p b{color:var(--text)}.xp-bar{grid-column:1/-1;height:9px;border-radius:99px;background:var(--panel-2);overflow:hidden}.xp-bar span{display:block;height:100%;width:0;background:var(--accent);border-radius:inherit;transition:width .35s}.xp-bar.large{height:12px;margin:18px 0 10px}
.today-grid{display:grid;grid-template-columns:1.35fr .65fr;gap:18px;margin-bottom:18px}.day-streak-pill{border:1px solid var(--line);background:var(--bg);padding:8px 11px;border-radius:999px;font-size:12px}.mission-list{display:grid;gap:10px}.mission{display:grid;grid-template-columns:34px 1fr auto;align-items:center;gap:12px;padding:11px 0;border-top:1px solid var(--line)}.mission:first-child{border-top:0}.mission-check{width:30px;height:30px;border-radius:50%;display:grid;place-items:center;border:1px solid var(--line);background:var(--bg);font-weight:900}.mission.done .mission-check{background:var(--good);color:#fff;border-color:var(--good)}.mission strong,.mission small{display:block}.mission small{color:var(--muted);margin-top:3px}.mission-progress{font-variant-numeric:tabular-nums;font-size:12px;color:var(--muted)}.review-panel{display:flex;flex-direction:column;align-items:flex-start;justify-content:center}.review-number{font-size:76px;line-height:.9;font-weight:900;letter-spacing:-.06em;color:var(--accent)}.review-panel p{color:var(--muted);line-height:1.5}.review-panel .text-btn{margin-top:8px}
.quick-modes-panel,.path-panel{margin-bottom:18px}.quick-modes{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.quick-mode{border:1px solid var(--line);background:var(--bg);border-radius:16px;padding:16px;display:grid;grid-template-columns:52px 1fr auto;gap:14px;align-items:center;text-align:left;transition:.15s}.quick-mode:hover{transform:translateY(-2px);border-color:var(--muted)}.quick-mode.smart{border-color:color-mix(in srgb,var(--accent) 65%,var(--line));background:color-mix(in srgb,var(--accent) 6%,var(--panel))}.quick-icon{width:52px;height:52px;border-radius:14px;background:var(--panel-2);display:grid;place-items:center;font-weight:900;color:var(--accent)}.quick-mode strong,.quick-mode small{display:block}.quick-mode small{margin-top:4px;color:var(--muted);line-height:1.4}.quick-mode>b{color:var(--muted)}
.learning-path{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}.path-step{position:relative;border:1px solid var(--line);background:var(--bg);border-radius:14px;padding:15px;text-align:left;min-height:116px;overflow:hidden}.path-step:hover{border-color:var(--muted)}.path-step.solid{border-color:color-mix(in srgb,var(--good) 55%,var(--line))}.path-step .path-index{font-size:10px;color:var(--muted);font-weight:850;letter-spacing:.1em}.path-step strong{display:block;font-size:15px;margin:13px 0 4px}.path-step small{color:var(--muted)}.path-step .path-kana{font:700 18px/1 "Yu Gothic",sans-serif;color:var(--accent)}.path-progress{position:absolute;left:0;bottom:0;height:4px;background:var(--good)}
.custom-zone{padding-top:38px}.section-heading{margin:20px 0}.section-heading h2{font-size:38px}.setup-grid{display:grid;grid-template-columns:.78fr 1.22fr;gap:18px}.segmented{display:grid;grid-template-columns:repeat(3,1fr);gap:5px;padding:5px;background:var(--panel-2);border-radius:12px}.segmented.compact{min-width:230px;grid-template-columns:repeat(2,1fr)}.seg-btn{border:0;background:transparent;padding:12px 10px;border-radius:9px;color:var(--muted);font-weight:700}.seg-btn.active{background:var(--panel);color:var(--text);box-shadow:0 3px 15px rgba(0,0,0,.08)}
.mode-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.mode-card{text-align:left;display:flex;flex-direction:column;min-height:118px;gap:6px;padding:16px;border-radius:14px;border:1px solid var(--line);background:var(--bg);transition:.16s}.mode-card:hover{border-color:var(--muted);transform:translateY(-1px)}.mode-card.active{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 8%,var(--panel));box-shadow:inset 0 0 0 1px var(--accent)}.mode-card strong{font-size:15px}.mode-card small{color:var(--muted)}.mode-icon{color:var(--accent);font:800 15px/1.3 ui-monospace,SFMono-Regular,Menlo,monospace;margin-bottom:auto}
.kana-panel{margin-top:18px}.mini-actions{display:flex;gap:6px;flex-wrap:wrap;justify-content:flex-end}.kana-groups{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.kana-group{border-top:1px solid var(--line);padding-top:14px}.kana-group-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px}.kana-group-head strong{font-size:13px}.kana-chips{display:flex;flex-wrap:wrap;gap:7px}.kana-chip{min-width:46px;height:44px;padding:0 10px;border-radius:10px;background:var(--bg);border:1px solid var(--line);display:flex;align-items:center;justify-content:center;gap:5px;font-weight:800}.kana-chip .kana{font:700 18px/1 "Yu Gothic","Hiragino Sans",sans-serif}.kana-chip small{color:var(--muted);font-size:10px;font-weight:700}.kana-chip.active{color:#fff;background:var(--accent);border-color:var(--accent)}.kana-chip.active small{color:rgba(255,255,255,.72)}.selection-summary{display:flex;justify-content:space-between;gap:20px;margin-top:18px;padding-top:18px;border-top:1px solid var(--line);font-size:13px}.launch-panel{margin-top:18px;display:flex;align-items:center;justify-content:space-between;gap:24px}.session-options{display:flex;align-items:end;gap:30px}.session-options label,.quick-stat small{display:block;color:var(--muted);font-size:11px;font-weight:700;margin-bottom:6px}select,.small-input{border:1px solid var(--line);background:var(--bg);color:var(--text);padding:11px 12px;border-radius:10px}.quick-stat strong{font-size:22px}

/* Quiz */
.quiz-topline{display:grid;grid-template-columns:150px 1fr 110px;gap:18px;align-items:center;margin-bottom:32px}.back-btn{border:0;background:transparent;color:var(--muted);text-align:left;padding:10px 0}.quiz-progress-wrap{height:8px;background:var(--panel-2);border-radius:99px;overflow:hidden}.quiz-progress{width:0;height:100%;background:var(--accent);border-radius:inherit;transition:width .25s}.session-counter{text-align:right;color:var(--muted);font-variant-numeric:tabular-nums}.quiz-layout{display:grid;grid-template-columns:120px 1fr 120px}.session-sidebar{display:flex;flex-direction:column;gap:8px}.session-stat{border:1px solid var(--line);border-radius:12px;padding:12px;background:var(--panel)}.session-stat small{display:block;color:var(--muted);font-size:10px;margin-bottom:4px}.session-stat strong{font-size:20px}.timer-stat strong{color:var(--accent)}.quiz-card{grid-column:2;width:min(680px,100%);justify-self:center;text-align:center;background:var(--panel);border:1px solid var(--line);border-radius:26px;padding:34px;box-shadow:var(--shadow);min-height:540px;display:flex;flex-direction:column;align-items:center}.quiz-badge{align-self:center;background:var(--panel-2);color:var(--muted);border-radius:999px;padding:6px 9px;font:850 9px/1 ui-monospace,SFMono-Regular,Menlo,monospace;letter-spacing:.1em;margin-bottom:16px}.quiz-label{color:var(--muted);font-size:13px;font-weight:700}.prompt-main{font:800 clamp(90px,16vw,150px)/1.2 "Yu Gothic","Hiragino Kaku Gothic ProN",sans-serif;letter-spacing:-.04em;margin:25px 0 8px}.prompt-main.romaji{font-family:inherit;font-size:clamp(58px,10vw,96px)}.prompt-main.word{font-size:clamp(54px,10vw,88px);margin-top:38px}.word-meaning{color:var(--muted);font-size:14px;margin-top:-3px}.sound-btn{border:1px solid var(--line);background:var(--bg);width:38px;height:38px;border-radius:50%;margin-bottom:24px}.answers-grid{width:100%;display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin-top:auto}.answer-btn{min-height:62px;border:1px solid var(--line);background:var(--bg);color:var(--text);border-radius:12px;font-weight:800;font-size:20px}.answer-btn.kana-answer{font:700 28px/1 "Yu Gothic",sans-serif}.answer-btn:hover:not(:disabled){border-color:var(--accent)}.answer-btn.correct{background:color-mix(in srgb,var(--good) 14%,var(--panel));border-color:var(--good);color:var(--good)}.answer-btn.wrong{background:color-mix(in srgb,var(--bad) 12%,var(--panel));border-color:var(--bad);color:var(--bad)}.answer-btn:disabled{cursor:default}.input-answer{width:100%;display:grid;grid-template-columns:1fr auto;gap:10px;margin-top:auto}.input-answer input{width:100%;border:1px solid var(--line);background:var(--bg);color:var(--text);border-radius:12px;padding:16px;font-size:20px;text-align:center}.feedback{width:100%;margin-top:18px;padding-top:18px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;text-align:left;gap:20px}.feedback strong,.feedback span{display:block}.feedback span{color:var(--muted);font-size:13px;margin-top:3px}.feedback.good strong{color:var(--good)}.feedback.bad strong{color:var(--bad)}

/* Results */
.results-card{width:min(780px,100%);margin:30px auto;text-align:center;background:var(--panel);border:1px solid var(--line);border-radius:28px;box-shadow:var(--shadow);padding:54px 40px}.results-card h1{font-size:64px}.result-glyph{font:700 20px/1.2 "Yu Gothic",sans-serif;color:var(--accent);margin-bottom:16px}.results-card .hero-text{margin:18px auto 0}.result-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin:34px 0}.result-stats>div{background:var(--bg);border:1px solid var(--line);border-radius:14px;padding:18px}.result-stats small{display:block;color:var(--muted);margin-bottom:7px}.result-stats strong{font-size:26px}.result-focus{background:color-mix(in srgb,var(--accent) 6%,var(--bg));border:1px solid var(--line);padding:14px;border-radius:12px;color:var(--muted);font-size:13px;margin:-12px 0 24px}.result-actions{display:flex;justify-content:center;gap:10px}

/* Stats */
.page-heading{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:30px}.page-heading h1{font-size:clamp(42px,6vw,66px)}.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:18px}.stats-grid.six{grid-template-columns:repeat(6,1fr)}.stat-card{padding:22px;border:1px solid var(--line);border-radius:18px;background:var(--panel)}.stat-card small{display:block;color:var(--muted);margin-bottom:10px}.stat-card strong{font-size:30px;letter-spacing:-.04em}.stats-columns{display:grid;grid-template-columns:1.4fr .6fr;gap:18px;margin-bottom:18px}.stats-columns.lower{grid-template-columns:1fr 1fr}.activity-heatmap{display:grid;grid-template-columns:repeat(15,1fr);gap:6px}.activity-day{aspect-ratio:1;border-radius:5px;background:var(--panel-2);border:1px solid color-mix(in srgb,var(--line) 65%,transparent)}.activity-day.l1{background:color-mix(in srgb,var(--accent) 25%,var(--panel))}.activity-day.l2{background:color-mix(in srgb,var(--accent) 48%,var(--panel))}.activity-day.l3{background:color-mix(in srgb,var(--accent) 72%,var(--panel))}.activity-day.l4{background:var(--accent)}.rank-progress-panel{display:flex;flex-direction:column;justify-content:center}.big-level{font:850 62px/1 "Yu Gothic",sans-serif;color:var(--accent);margin:10px 0}.mastery-panel,.history-panel{margin-top:18px}.legend{color:var(--muted);font-size:12px}.dot{width:8px;height:8px;display:inline-block;border-radius:50%;margin:0 5px 0 12px}.dot:first-child{margin-left:0}.dot.weak{background:var(--bad)}.dot.good{background:var(--good)}.dot.due{background:var(--warn)}.mastery-grid{display:grid;grid-template-columns:repeat(10,1fr);gap:7px}.mastery-item{position:relative;min-height:73px;border:1px solid var(--line);background:var(--bg);border-radius:11px;display:flex;flex-direction:column;align-items:center;justify-content:center;overflow:hidden}.mastery-item.due{border-color:color-mix(in srgb,var(--warn) 55%,var(--line))}.mastery-item.weak{border-color:color-mix(in srgb,var(--bad) 45%,var(--line))}.mastery-item .kana{font:700 23px/1 "Yu Gothic",sans-serif;z-index:1}.mastery-item small{color:var(--muted);font-size:9px;margin-top:5px;z-index:1}.mastery-fill{position:absolute;left:0;right:0;bottom:0;height:0;background:color-mix(in srgb,var(--good) 14%,transparent)}.weak-list{display:grid;grid-template-columns:repeat(2,1fr);gap:8px}.weak-item{background:var(--bg);border:1px solid var(--line);border-radius:12px;padding:13px;display:flex;align-items:center;gap:12px}.weak-item .kana{font:700 30px/1 "Yu Gothic",sans-serif}.weak-item div{display:flex;flex-direction:column}.weak-item small{color:var(--muted)}.empty-state{color:var(--muted);grid-column:1/-1;padding:22px 0}.achievement-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:8px}.achievement{border:1px solid var(--line);background:var(--bg);border-radius:12px;padding:12px;display:grid;grid-template-columns:36px 1fr;gap:10px;align-items:center;opacity:.45}.achievement.unlocked{opacity:1;border-color:color-mix(in srgb,var(--good) 45%,var(--line))}.achievement-icon{width:36px;height:36px;border-radius:10px;background:var(--panel-2);display:grid;place-items:center}.achievement strong,.achievement small{display:block}.achievement small{color:var(--muted);margin-top:2px;font-size:10px}.session-history{display:grid;gap:8px}.history-row{display:grid;grid-template-columns:1fr 100px 90px 90px;align-items:center;gap:12px;padding:11px 0;border-top:1px solid var(--line)}.history-row:first-child{border-top:0}.history-row small{color:var(--muted)}.history-row b{text-align:right;font-variant-numeric:tabular-nums}

/* Settings + backup */
.settings-panel{padding:8px 24px}.setting-row{display:flex;justify-content:space-between;align-items:center;gap:24px;padding:20px 0;border-bottom:1px solid var(--line)}.setting-row:last-child{border-bottom:0}.setting-row strong,.setting-row small{display:block}.setting-row small{color:var(--muted);margin-top:5px}.switch input{display:none}.switch span{display:block;width:48px;height:27px;background:var(--panel-2);border:1px solid var(--line);border-radius:99px;position:relative;transition:.18s}.switch span::after{content:"";position:absolute;width:19px;height:19px;top:3px;left:4px;border-radius:50%;background:var(--muted);transition:.18s}.switch input:checked+span{background:color-mix(in srgb,var(--accent) 25%,var(--panel));border-color:var(--accent)}.switch input:checked+span::after{left:24px;background:var(--accent)}.install-panel{margin-top:18px;display:flex;justify-content:space-between;gap:30px;align-items:center}code{background:var(--panel-2);padding:2px 5px;border-radius:5px}.backup-panel{margin-top:18px}.backup-badge{padding:7px 9px;border:1px solid var(--line);border-radius:8px;color:var(--muted);font:800 10px/1 ui-monospace,SFMono-Regular,Menlo,monospace;letter-spacing:.09em}.backup-intro{margin-top:-4px}.backup-controls{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:12px;align-items:end;margin-top:22px}.backup-code-wrap label{display:block;color:var(--muted);font-size:11px;font-weight:750;margin-bottom:7px}.backup-code-wrap small{display:block;color:var(--muted);font-size:11px;line-height:1.45;margin-top:7px}.backup-code-input{width:100%;border:1px solid var(--line);background:var(--bg);color:var(--text);border-radius:12px;padding:14px 15px;font:800 19px/1 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;letter-spacing:.08em;text-transform:uppercase}.remember-code{display:flex;gap:9px;align-items:center;width:max-content;max-width:100%;margin-top:14px;color:var(--muted);font-size:12px}.remember-code input{accent-color:var(--accent)}.backup-actions{display:flex;gap:10px;margin-top:22px;flex-wrap:wrap}.backup-status{margin-top:16px;padding:12px 14px;background:var(--bg);border:1px solid var(--line);border-radius:10px;color:var(--muted);font-size:12px}.backup-status.good{border-color:color-mix(in srgb,var(--good) 55%,var(--line));color:var(--good)}.backup-status.bad{border-color:color-mix(in srgb,var(--bad) 55%,var(--line));color:var(--bad)}.backup-status.busy{color:var(--text)}
footer{min-height:78px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;color:var(--muted);font-size:11px}.toast{position:fixed;bottom:24px;left:50%;transform:translate(-50%,20px);background:var(--text);color:var(--bg);border-radius:10px;padding:11px 16px;opacity:0;pointer-events:none;transition:.2s ease;z-index:50;box-shadow:var(--shadow);font-weight:700;font-size:13px}.toast.show{opacity:1;transform:translate(-50%,0)}

@media(max-width:980px){.dashboard-hero,.today-grid,.stats-columns,.stats-columns.lower{grid-template-columns:1fr}.rank-card{grid-template-columns:auto 1fr}.setup-grid{grid-template-columns:1fr}.learning-path{grid-template-columns:repeat(3,1fr)}.stats-grid.six{grid-template-columns:repeat(3,1fr)}.mastery-grid{grid-template-columns:repeat(7,1fr)}.quiz-layout{grid-template-columns:1fr}.quiz-card{grid-column:1}.session-sidebar{order:2;margin-top:10px;flex-direction:row;justify-content:center}.session-stat{min-width:90px}}
@media(max-width:680px){.app-shell{width:min(100% - 20px,1180px)}.topbar{height:76px}.brand-copy small{display:none}.topnav .nav-btn:not(.icon-btn){font-size:0;width:42px;height:42px;padding:0}.topnav .nav-btn[data-nav="home"]::before{content:"道";font-size:17px}.topnav .nav-btn[data-nav="stats"]::before{content:"統";font-size:17px}.page{padding-top:36px}.dashboard-hero{gap:12px}.hero-main{padding-top:6px}.rank-card{padding:20px}.rank-glyph{width:72px;height:72px;font-size:38px}h1{font-size:50px}.today-grid{gap:12px}.quick-modes{grid-template-columns:1fr}.learning-path{grid-template-columns:repeat(2,1fr)}.panel{padding:18px;border-radius:16px}.panel-heading.split,.launch-panel,.session-options,.page-heading,.setting-row,.install-panel{align-items:stretch;flex-direction:column}.mini-actions{justify-content:flex-start}.kana-groups{grid-template-columns:1fr}.launch-panel{display:flex}.session-options{display:grid;grid-template-columns:1fr 1fr;gap:16px}.session-options>div:first-child{grid-column:1/-1}#question-count{width:100%}.quiz-topline{grid-template-columns:auto 1fr;gap:12px}.session-counter{grid-column:2;grid-row:2;font-size:11px}.quiz-progress-wrap{grid-column:2}.back-btn{grid-row:1/3}.quiz-card{padding:24px 16px;min-height:500px}.answers-grid{grid-template-columns:1fr}.input-answer{grid-template-columns:1fr}.feedback{align-items:stretch;flex-direction:column}.result-stats,.stats-grid.six{grid-template-columns:repeat(2,1fr)}.results-card{padding:40px 20px}.results-card h1{font-size:48px}.result-actions{flex-direction:column-reverse}.mastery-grid{grid-template-columns:repeat(5,1fr)}.weak-list,.achievement-grid{grid-template-columns:1fr}.activity-heatmap{grid-template-columns:repeat(10,1fr)}.history-row{grid-template-columns:1fr auto}.history-row .history-hide{display:none}.segmented.compact{min-width:0;width:100%}.small-input{width:100%}.backup-controls{grid-template-columns:1fr}.backup-controls .secondary-btn,.backup-actions .primary-btn,.backup-actions .secondary-btn{width:100%}.backup-actions{flex-direction:column}footer{gap:10px}footer span:last-child{display:none}}

/* ===== V2.1 — multi-dojo / KanaDojo-inspired app shell ===== */
html[data-theme="sumi"]{--bg:#111214;--panel:#181a1d;--panel-2:#22252a;--text:#f2efe8;--muted:#a9a49a;--line:#30343a;--accent:#e7d9b7;--accent-2:#fff3d3;--good:#7bc7a4;--warn:#d9a75f;--bad:#e47f77;--shadow:0 18px 50px rgba(0,0,0,.22)}
html[data-theme="sapphire"]{--bg:#0b1220;--panel:#111c2d;--panel-2:#18263b;--text:#eef5ff;--muted:#91a4c1;--line:#263a57;--accent:#72a7ff;--accent-2:#9ac0ff;--good:#63d0ac;--warn:#e8b65d;--bad:#ff7979;--shadow:0 18px 50px rgba(0,0,0,.28)}
html[data-theme="matcha"]{--bg:#101611;--panel:#182019;--panel-2:#222d23;--text:#edf3e8;--muted:#a6b39c;--line:#344035;--accent:#a8d67c;--accent-2:#c3e69d;--good:#7dcc9b;--warn:#dfb863;--bad:#e78178;--shadow:0 18px 50px rgba(0,0,0,.25)}
html[data-theme="sakura"]{--bg:#1a1317;--panel:#251b21;--panel-2:#31242c;--text:#fff0f6;--muted:#c3a6b2;--line:#493642;--accent:#f49abb;--accent-2:#ffb5ce;--good:#82caa5;--warn:#e4b06d;--bad:#ff7f89;--shadow:0 18px 50px rgba(0,0,0,.25)}
html[data-theme="paper"]{--bg:#f5f1e8;--panel:#fffdf8;--panel-2:#ebe5da;--text:#1d1b18;--muted:#756f67;--line:#d8d0c3;--accent:#a94a3f;--accent-2:#c25a4d;--good:#408b66;--warn:#a9782d;--bad:#bd4e46;--shadow:0 18px 50px rgba(50,40,25,.08)}
html[data-font="gothic"] .prompt-main,html[data-font="gothic"] .ref-main,html[data-font="gothic"] .kana,html[data-font="gothic"] .dojo-glyph,html[data-font="gothic"] .brand-mark{font-family:"Yu Gothic","Hiragino Kaku Gothic ProN","Noto Sans JP",sans-serif}
html[data-font="mincho"] .prompt-main,html[data-font="mincho"] .ref-main,html[data-font="mincho"] .kana,html[data-font="mincho"] .dojo-glyph,html[data-font="mincho"] .brand-mark{font-family:"Yu Mincho","Hiragino Mincho ProN","Noto Serif JP",serif}
html[data-font="system"] .prompt-main,html[data-font="system"] .ref-main,html[data-font="system"] .kana,html[data-font="system"] .dojo-glyph,html[data-font="system"] .brand-mark{font-family:system-ui,sans-serif}

.topnav{gap:4px}.nav-btn{display:flex;align-items:center;gap:7px;padding:9px 11px;font-size:12px}.nav-btn>span{font-size:15px}.nav-btn>b{font-weight:780}.brand-mark{background:var(--accent);color:var(--bg)}
.primary-btn{color:var(--bg)}

.dojo-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:0 0 18px}.dojo-card{position:relative;overflow:hidden;min-height:250px;padding:24px;border-radius:22px;border:1px solid var(--line);background:var(--panel);text-align:left;display:flex;flex-direction:column;align-items:flex-start;box-shadow:var(--shadow);transition:.2s ease}.dojo-card:hover{transform:translateY(-3px);border-color:var(--accent)}.dojo-card::after{content:"";position:absolute;width:180px;height:180px;border-radius:50%;right:-80px;top:-90px;background:color-mix(in srgb,var(--accent) 8%,transparent)}.dojo-glyph{font-size:56px;line-height:1;font-weight:800;color:var(--accent);margin-bottom:24px;z-index:1}.dojo-card small{font-size:10px;letter-spacing:.12em;color:var(--muted);font-weight:850}.dojo-card h2{font-size:22px;margin:7px 0 8px}.dojo-card p{margin:0;color:var(--muted);font-size:12px;line-height:1.55}.dojo-card footer{width:100%;min-height:auto;margin-top:auto;padding-top:22px;border:0;display:flex;justify-content:space-between;font-size:11px}.dojo-card footer b{color:var(--text)}

.dojo-heading{display:flex;justify-content:space-between;align-items:flex-end;gap:30px;margin-bottom:28px}.dojo-heading h1{font-size:clamp(44px,6vw,68px)}.dojo-heading-actions{display:flex;gap:10px;flex-wrap:wrap}.mode-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:9px;margin-bottom:18px;padding:12px}.strip-mode{border:0;background:transparent;border-radius:13px;padding:15px;display:grid;grid-template-columns:42px 1fr;column-gap:11px;text-align:left;align-items:center}.strip-mode:hover{background:var(--panel-2)}.strip-mode>span{grid-row:1/3;width:42px;height:42px;border-radius:12px;background:var(--panel-2);display:grid;place-items:center;color:var(--accent);font-weight:850}.strip-mode strong,.strip-mode small{display:block}.strip-mode small{color:var(--muted);font-size:10px;margin-top:2px}.kana-chart-panel{margin-bottom:18px}.kana-chart{display:grid;gap:9px}.chart-row{display:grid;grid-template-columns:130px 1fr;gap:12px;align-items:start;border-top:1px solid var(--line);padding-top:10px}.chart-row:first-child{border-top:0}.chart-row>strong{font-size:12px;color:var(--muted)}.chart-row>div{display:flex;flex-wrap:wrap;gap:6px}.chart-row span{width:54px;height:56px;border:1px solid var(--line);border-radius:10px;background:var(--bg);display:grid;place-items:center}.chart-row b{font-size:20px;line-height:1}.chart-row small{font-size:9px;color:var(--muted)}
.mode-grid.three{grid-template-columns:repeat(3,1fr)}.secondary-btn.small{padding:9px 12px;font-size:11px}.domain-summary{display:grid;grid-template-columns:repeat(4,1fr);gap:0;padding:0;margin-bottom:18px;overflow:hidden}.domain-summary>div{padding:22px;border-left:1px solid var(--line)}.domain-summary>div:first-child{border-left:0}.domain-summary small,.domain-summary strong{display:block}.domain-summary small{color:var(--muted);font-size:10px;margin-bottom:8px}.domain-summary strong{font-size:26px}.deck-panel,.reference-panel{margin-top:18px}.deck-groups{display:grid;grid-template-columns:repeat(3,1fr);gap:9px}.deck-group{border:1px solid var(--line);background:var(--bg);border-radius:13px;padding:13px;display:grid;grid-template-columns:34px 1fr;gap:10px;align-items:center;text-align:left}.deck-group:hover{border-color:var(--muted)}.deck-group>span{width:34px;height:34px;border-radius:10px;background:var(--panel-2);display:grid;place-items:center;font-weight:850;color:var(--muted)}.deck-group.active{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 6%,var(--panel))}.deck-group.active>span{background:var(--accent);color:var(--bg)}.deck-group strong,.deck-group small{display:block}.deck-group small{margin-top:3px;color:var(--muted);font-size:10px}.search-input{min-width:230px}.reference-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:9px;max-height:560px;overflow:auto;padding-right:3px}.reference-card{border:1px solid var(--line);background:var(--bg);border-radius:13px;padding:14px;min-height:132px}.ref-top{display:flex;justify-content:space-between;align-items:flex-start;gap:10px}.ref-main{font-size:28px;font-weight:800}.ref-main.giant{font-size:38px}.mastery-pill{font-size:9px;border:1px solid var(--line);padding:4px 6px;border-radius:999px;color:var(--muted)}.reference-card>strong,.reference-card>small{display:block}.reference-card>strong{margin-top:10px;font-size:13px}.ref-reading{color:var(--accent);margin-top:4px}.reference-card>small:last-child{color:var(--muted);line-height:1.45;margin-top:7px}.kanji-ref{min-height:178px}

.prompt-furigana{text-align:center;color:var(--accent);font-size:16px;font-weight:750;letter-spacing:.08em;margin-top:20px;margin-bottom:-8px}.prompt-note{margin:10px auto 0;max-width:520px;padding:11px 14px;border:1px solid var(--line);border-radius:10px;color:var(--muted);font-size:12px;background:var(--bg)}.prompt-main.meaning{font-family:inherit!important;font-size:clamp(34px,6vw,58px);max-width:760px;line-height:1.08}.lives-stat strong{color:var(--bad);letter-spacing:.1em;font-size:18px}
.domain-progress-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:18px}.domain-progress-card{display:grid;grid-template-columns:54px 1fr;gap:14px;align-items:center}.domain-progress-card>span{width:54px;height:54px;border-radius:15px;background:var(--panel-2);display:grid;place-items:center;font-size:25px;font-weight:850;color:var(--accent)}.domain-progress-card small,.domain-progress-card strong{display:block}.domain-progress-card small{color:var(--muted);font-size:10px}.domain-progress-card strong{font-size:25px;margin:3px 0 7px}.mini-bar{height:5px;border-radius:99px;background:var(--panel-2);overflow:hidden}.mini-bar i{display:block;height:100%;width:0;background:var(--accent);border-radius:inherit;transition:width .3s}
.theme-picker{display:flex;gap:7px;flex-wrap:wrap;justify-content:flex-end}.theme-picker button{border:1px solid var(--line);background:var(--bg);color:var(--muted);border-radius:10px;padding:8px 10px;display:flex;gap:7px;align-items:center;font-size:11px}.theme-picker button.active{border-color:var(--accent);color:var(--text);box-shadow:inset 0 0 0 1px var(--accent)}.theme-dot{width:13px;height:13px;border-radius:50%;display:block}.theme-dot.sumi{background:#d9ccb0}.theme-dot.sapphire{background:#72a7ff}.theme-dot.matcha{background:#a8d67c}.theme-dot.sakura{background:#f49abb}.theme-dot.paper{background:#a94a3f}.site-footer{min-height:78px}

@media(max-width:1060px){.topnav .nav-btn b{display:none}.nav-btn{width:40px;height:40px;justify-content:center;padding:0}.dojo-grid{grid-template-columns:1fr 1fr}.dojo-card:last-child{grid-column:1/-1}.reference-grid{grid-template-columns:repeat(3,1fr)}}
@media(max-width:820px){.dojo-heading{align-items:flex-start;flex-direction:column}.mode-strip{grid-template-columns:1fr 1fr}.domain-summary{grid-template-columns:1fr 1fr}.domain-summary>div:nth-child(3){border-left:0;border-top:1px solid var(--line)}.domain-summary>div:nth-child(4){border-top:1px solid var(--line)}.deck-groups{grid-template-columns:1fr 1fr}.reference-grid{grid-template-columns:1fr 1fr}.domain-progress-grid{grid-template-columns:1fr}.theme-picker{justify-content:flex-start}}
@media(max-width:680px){.topbar{position:sticky;top:0;z-index:30;background:color-mix(in srgb,var(--bg) 90%,transparent);backdrop-filter:blur(14px)}.topnav{gap:2px}.topnav .nav-btn:not(.icon-btn){font-size:inherit;width:36px;height:36px}.topnav .nav-btn[data-nav]::before{content:none}.nav-btn>span{font-size:14px}.brand-mark{width:38px;height:38px}.brand-copy strong{font-size:13px}.dojo-grid{grid-template-columns:1fr}.dojo-card:last-child{grid-column:auto}.dojo-card{min-height:220px}.mode-strip,.domain-summary,.deck-groups,.reference-grid{grid-template-columns:1fr}.domain-summary>div{border-left:0;border-top:1px solid var(--line)}.domain-summary>div:first-child{border-top:0}.mode-grid.three{grid-template-columns:1fr}.chart-row{grid-template-columns:1fr}.search-input{min-width:0}.reference-grid{max-height:680px}.dojo-heading-actions{width:100%}.dojo-heading-actions button{flex:1}.theme-picker{width:100%}.theme-picker button{flex:1;justify-content:center}.site-footer span:last-child{display:none}}