/* ============================================================
   なるほど学科 — stylesheet
   紙・墨・朱。教本のように静かで、指に気持ちいい。
   ============================================================ */

:root {
  --paper:   #f6f4ee;
  --card:    #fffefa;
  --card-2:  #fbf9f3;
  --ink:     #262319;
  --ink-2:   #6b6559;
  --ink-3:   #98917f;
  --line:    #e4dfd2;
  --line-2:  #d5cfbe;
  --shu:     #b23a2f;   /* 朱 — ○・強調 */
  --shu-deep:#8f2d24;
  --shu-wash:#f8ece7;
  --ai:      #3c5d75;   /* 藍 — ×・対比 */
  --ai-deep: #2e4a5e;
  --ai-wash: #ecf1f3;
  --kin:     #a97b2a;   /* 山吹 — しおり */
  --ok-wash: #eef3ea;
  --matsu:   #4a7040;   /* 松葉 — 達成 */
  --radius: 12px;
  --mincho: "Hiragino Mincho ProN", "Hiragino Mincho Pro", "Yu Mincho", "YuMincho", "BIZ UDMincho", "Noto Serif JP", serif;
  --gothic: "Hiragino Kaku Gothic ProN", "Hiragino Sans", "BIZ UDPGothic", "Yu Gothic", "Noto Sans JP", Meiryo, system-ui, sans-serif;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--paper);
  background-image: radial-gradient(rgba(38,35,25,.022) 1px, transparent 1.2px);
  background-size: 22px 22px;
  color: var(--ink);
  font-family: var(--gothic);
  font-size: 16px;
  line-height: 1.85;
  font-feature-settings: "palt";
  -webkit-font-smoothing: antialiased;
  padding-bottom: env(safe-area-inset-bottom);
}

.wrap { max-width: 620px; margin: 0 auto; padding-left: 18px; padding-right: 18px; }

a { color: var(--ai-deep); text-decoration: none; }
button { font-family: inherit; font-feature-settings: inherit; }

.skip {
  position: absolute; left: -999px; top: 0; background: var(--ink); color: #fff;
  padding: 6px 12px; z-index: 99;
}
.skip:focus { left: 8px; }

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

[hidden] { display: none !important; }

/* ---------- header ---------- */

.hdr {
  position: sticky; top: 0; z-index: 20;
  background: rgba(246,244,238,.92);
  -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.hdr-in { display: flex; align-items: center; gap: 10px; height: 54px; }
.brand { display: inline-flex; align-items: center; gap: 9px; color: var(--ink); }
.brand-seal {
  display: inline-grid; place-items: center;
  width: 27px; height: 27px; border-radius: 6px;
  background: var(--shu); color: #fdf9f2;
  font-family: var(--mincho); font-weight: 600; font-size: 16px;
  box-shadow: inset 0 0 0 1.5px rgba(253,249,242,.35);
}
.brand-name { font-family: var(--mincho); font-weight: 600; font-size: 17.5px; letter-spacing: .06em; }
.hdr-back {
  appearance: none; border: 0; background: none; color: var(--ink-2);
  font-size: 15px; padding: 8px 10px 8px 2px; margin-left: -4px; cursor: pointer;
  display: inline-flex; align-items: baseline; gap: 2px; border-radius: 8px;
}
.hdr-back:active { color: var(--ink); }
.hdr-slot { margin-left: auto; display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--ink-2); font-variant-numeric: tabular-nums; }
.hdr-prog { height: 3px; background: var(--line); }
.hdr-prog i { display: block; height: 100%; width: 0; background: var(--shu); transition: width .25s ease; }

/* ---------- common ---------- */

main { padding-top: 22px; padding-bottom: 56px; min-height: 62vh; }

/* ページ遷移のときだけ入場アニメーション。回答後などの部分更新では動かさない */
.view-in { animation: viewin .22s ease both; }
@keyframes viewin { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

/* 問題カードの送り（次へ／まえへ）。縦ではなく横方向に流して「上下にゆれる」感じをなくす */
.card-enter { animation: cardin .22s ease-out both; }
.card-enter-back { animation: cardinback .22s ease-out both; }
@keyframes cardin { from { opacity: 0; transform: translateX(18px); } to { opacity: 1; transform: none; } }
@keyframes cardinback { from { opacity: 0; transform: translateX(-18px); } to { opacity: 1; transform: none; } }

h1, h2, h3 { font-family: var(--mincho); letter-spacing: .04em; line-height: 1.5; }
h1 { font-size: 24px; margin: 8px 0 6px; }
h2 { font-size: 19px; margin: 34px 0 12px; display: flex; align-items: center; gap: 10px; }
h2::after { content: ""; flex: 1; height: 1px; background: var(--line-2); }
.sub { color: var(--ink-2); font-size: 14px; margin: 0 0 18px; }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: 0 1px 2px rgba(38,35,25,.03);
}

.btn {
  appearance: none; display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border: 1px solid var(--line-2); border-radius: 10px; cursor: pointer;
  background: var(--card); color: var(--ink);
  font-size: 15.5px; font-weight: 600; letter-spacing: .03em;
  padding: 12px 18px; min-height: 48px;
  transition: transform .08s ease, background-color .15s ease, border-color .15s ease;
  touch-action: manipulation; -webkit-tap-highlight-color: transparent;
}
.btn:active { transform: scale(.975); }
.btn-ink { background: var(--ink); border-color: var(--ink); color: #f7f4ec; }
.btn-ink:active { background: #000; }
.btn-ghost { background: transparent; }
.btn-block { display: flex; width: 100%; }
.btn[disabled] { opacity: .4; pointer-events: none; }

.chip {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: 12px; font-weight: 600; letter-spacing: .04em;
  border: 1px solid var(--line-2); border-radius: 999px;
  padding: 2.5px 10px; color: var(--ink-2); background: var(--card);
}
.chip-p { color: var(--shu-deep); border-color: #e5cfc4; background: var(--shu-wash); }

/* ---------- home ---------- */

.hero { padding: 10px 0 4px; }
.hero-kicker { display: inline-flex; align-items: center; gap: 8px; color: var(--shu-deep); font-size: 12.5px; font-weight: 700; letter-spacing: .18em; }
.hero-kicker::before { content: ""; width: 22px; height: 1.5px; background: var(--shu); }
.hero h1 { font-size: 26px; margin: 10px 0 4px; }
.hero p { margin: 6px 0 0; color: var(--ink-2); font-size: 14.5px; }

.stat-strip {
  display: flex; gap: 0; margin: 20px 0 6px;
  border: 1px solid var(--line); border-radius: var(--radius); background: var(--card); overflow: hidden;
}
.stat { flex: 1; padding: 12px 8px 10px; text-align: center; }
.stat + .stat { border-left: 1px solid var(--line); }
.stat b { display: block; font-family: var(--mincho); font-size: 21px; font-weight: 600; font-variant-numeric: tabular-nums; }
.stat span { font-size: 11.5px; color: var(--ink-3); letter-spacing: .06em; }

.resume {
  margin: 14px 0 0; padding: 13px 16px;
  border: 1px solid #e0c9a6; background: #faf3e3; border-radius: var(--radius);
  display: flex; align-items: center; gap: 12px; font-size: 14px;
}
.resume b { font-weight: 700; }
.resume .btn { margin-left: auto; min-height: 38px; padding: 6px 14px; font-size: 13.5px; flex-shrink: 0; }

.menu { display: grid; gap: 10px; margin-top: 14px; }
.mcard {
  display: flex; align-items: center; gap: 14px; text-align: left; width: 100%;
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 15px 16px; cursor: pointer; color: var(--ink);
  transition: transform .08s ease, border-color .15s ease;
  -webkit-tap-highlight-color: transparent;
}
.mcard:active { transform: scale(.985); }
.mcard-mark {
  flex-shrink: 0; width: 44px; height: 44px; border-radius: 10px;
  display: grid; place-items: center;
  font-family: var(--mincho); font-size: 19px; font-weight: 600;
  background: var(--card-2); border: 1px solid var(--line);
  color: var(--ink-2);
}
.mcard-mark.m-shu { background: var(--shu-wash); border-color: #e8d2c8; color: var(--shu-deep); }
.mcard-mark.m-ai  { background: var(--ai-wash); border-color: #d3dde2; color: var(--ai-deep); }
.mcard-mark.m-kin { background: #f7f0dd; border-color: #e6d9b8; color: var(--kin); }
.mcard-body { min-width: 0; }
.mcard-body b { display: block; font-size: 16px; letter-spacing: .02em; }
.mcard-body span { display: block; font-size: 12.5px; color: var(--ink-2); margin-top: 1px; }
.mcard-aux { margin-left: auto; flex-shrink: 0; color: var(--ink-3); font-size: 12.5px; display: flex; align-items: center; gap: 7px; font-variant-numeric: tabular-nums; }
.mcard-aux::after { content: "›"; font-size: 17px; color: var(--line-2); font-weight: 700; }
.badge-n {
  min-width: 21px; height: 21px; padding: 0 6px; border-radius: 999px;
  display: inline-grid; place-items: center;
  background: var(--shu); color: #fff; font-size: 11.5px; font-weight: 700;
}

/* ---------- chapter list ---------- */

.chl { display: grid; gap: 9px; }
.chl-item {
  display: flex; align-items: center; gap: 13px; width: 100%; text-align: left;
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 13px 15px; cursor: pointer; color: var(--ink);
  transition: transform .08s ease;
  -webkit-tap-highlight-color: transparent;
}
.chl-item:active { transform: scale(.985); }
.chl-no { font-family: var(--mincho); font-size: 13px; color: var(--ink-3); width: 2.2em; flex-shrink: 0; text-align: center; line-height: 1.3; }
.chl-no b { display: block; font-size: 19px; color: var(--ink); font-weight: 600; }
.chl-body { min-width: 0; flex: 1; }
.chl-body b { display: block; font-size: 15.5px; }
.chl-body span { display: block; font-size: 12px; color: var(--ink-2); }
.chl-meter { width: 52px; flex-shrink: 0; text-align: right; }
.chl-meter i { display: block; height: 4px; border-radius: 2px; background: var(--line); overflow: hidden; margin-top: 5px; }
.chl-meter i b { display: block; height: 100%; background: var(--matsu); border-radius: 2px; }
.chl-meter span { font-size: 11px; color: var(--ink-3); font-variant-numeric: tabular-nums; }

/* ---------- quiz ---------- */

.q-head { display: flex; align-items: center; gap: 8px; margin-bottom: 12px; font-size: 12.5px; color: var(--ink-2); }
.q-head .q-count { margin-left: auto; font-variant-numeric: tabular-nums; }

.q-card { padding: 22px 20px 20px; }
.q-no { font-family: var(--mincho); color: var(--shu-deep); font-size: 13px; letter-spacing: .1em; margin-bottom: 8px; display: flex; align-items: center; gap: 10px; }
.q-no::after { content: ""; flex: 1; height: 1px; background: var(--line); }
.q-text { font-size: 17.5px; line-height: 2.05; margin: 0; font-weight: 500; }

.flagbtn {
  appearance: none; border: 0; background: none; cursor: pointer;
  color: var(--ink-3); font-size: 13px; display: inline-flex; align-items: center; gap: 5px;
  padding: 6px 8px; border-radius: 8px;
}
.flagbtn.on { color: var(--kin); font-weight: 700; }
.flagbtn svg { width: 15px; height: 15px; }

/* ○× answer bar */
.ansbar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 30;
  background: rgba(255,254,250,.96);
  -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px);
  border-top: 1px solid var(--line);
  padding: 10px 14px calc(10px + env(safe-area-inset-bottom));
}
.ansbar-in { max-width: 620px; margin: 0 auto; display: flex; gap: 10px; }
.ansbtn {
  flex: 1; appearance: none; cursor: pointer;
  border-radius: 14px; min-height: 64px;
  display: flex; align-items: center; justify-content: center; gap: 10px;
  font-weight: 700; font-size: 15px; letter-spacing: .05em;
  transition: transform .08s ease, background-color .12s ease;
  touch-action: manipulation; -webkit-tap-highlight-color: transparent;
}
.ansbtn:active { transform: scale(.96); }
.ansbtn i { font-style: normal; font-family: var(--mincho); font-size: 27px; font-weight: 600; line-height: 1; }
.ans-o { background: #fdf7f4; border: 1.5px solid #dcb1a7; color: var(--shu-deep); }
.ans-o:active { background: var(--shu-wash); }
.ans-x { background: #f4f7f9; border: 1.5px solid #b3c4cf; color: var(--ai-deep); }
.ans-x:active { background: var(--ai-wash); }
.ansbar .nextbtn { flex: 1; border-radius: 14px; min-height: 64px; font-size: 16px; animation: barswap .18s ease-out both; }
@keyframes barswap { from { opacity: 0; } to { opacity: 1; } }
.ansbtn.sel-o, .ansbtn.sel-x { animation: selpop .18s ease-out; }
@keyframes selpop { 50% { transform: scale(.965); } }
.pad-ansbar { padding-bottom: 120px; }

/* feedback（回答したその場に、下からふわっと差し込まれる） */
.fb { margin-top: 14px; animation: fbin .28s cubic-bezier(.2,.8,.3,1) both; }
@keyframes fbin { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }

.fb-verdict { display: flex; align-items: center; gap: 13px; padding: 4px 2px 12px; }
.fb-stamp {
  width: 52px; height: 52px; border-radius: 50%; flex-shrink: 0;
  display: grid; place-items: center;
  font-family: var(--mincho); font-size: 30px; font-weight: 600; line-height: 1;
  animation: stamp .32s cubic-bezier(.2,1.4,.4,1) both;
}
@keyframes stamp { from { transform: scale(1.7) rotate(-10deg); opacity: 0; } to { transform: none; opacity: 1; } }
.fb-stamp.ok { border: 2.5px solid var(--shu); color: var(--shu); background: var(--shu-wash); }
.fb-stamp.ng { border: 2.5px solid var(--ai); color: var(--ai); background: var(--ai-wash); }
.fb-verdict-t b { display: block; font-family: var(--mincho); font-size: 19px; letter-spacing: .08em; }
.fb-verdict-t span { font-size: 13px; color: var(--ink-2); }

.fb-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 4px 18px 16px; box-shadow: 0 1px 2px rgba(38,35,25,.03); }

.fb-sec { padding: 13px 0 2px; }
.fb-sec + .fb-sec { border-top: 1px dashed var(--line); margin-top: 11px; }
.fb-label {
  display: inline-flex; align-items: center; gap: 7px;
  font-family: var(--mincho); font-weight: 600; font-size: 13.5px; letter-spacing: .1em;
  color: var(--ink); margin-bottom: 3px;
}
.fb-label::before { content: ""; width: 3px; height: 14px; background: var(--shu); border-radius: 2px; }
.fb-sec.sec-aim .fb-label::before { background: var(--matsu); }
.fb-sec.sec-law .fb-label::before { background: var(--ai); }
.fb-sec.sec-risk .fb-label::before { background: var(--kin); }
.fb-sec.sec-trap .fb-label::before { background: var(--ink-3); }
.fb-body { font-size: 14.5px; line-height: 1.95; color: #3a362c; margin: 0; }
.fb-body em { font-style: normal; font-weight: 700; background: linear-gradient(transparent 68%, #f3d9ce 68%); }

/* 図解 */
.fb-fig { margin: 12px 0 6px; }
.fb-fig svg { display: block; width: 100%; height: auto; border: 1px solid var(--line); border-radius: 10px; background: #f4f1e7; }
.fb-fig figcaption { font-size: 12px; color: var(--ink-2); line-height: 1.8; margin-top: 6px; }
.note-fig { margin-top: 10px; }

/* 図解内のささやかな動き（信号の点滅・ウインカー・停止距離の車） */
.fxb  { animation: fxblink 1.1s steps(1) infinite; }
.fxb2 { animation: fxblink 1.1s steps(1) infinite reverse; }
@keyframes fxblink { 0%, 49% { opacity: 1; } 50%, 100% { opacity: .12; } }
.fxw  { animation: fxwink .8s steps(1) infinite; }
@keyframes fxwink { 0%, 54% { opacity: 1; } 55%, 100% { opacity: .15; } }
.fxcar { animation: fxcar 4.2s infinite; }
@keyframes fxcar {
  0%   { transform: translateX(0); opacity: 0; animation-timing-function: linear; }
  6%   { opacity: 1; }
  38%  { transform: translateX(128px); animation-timing-function: cubic-bezier(.1,.65,.45,1); }
  82%  { transform: translateX(276px); opacity: 1; }
  94%  { opacity: 1; }
  100% { transform: translateX(276px); opacity: 0; }
}
@media (prefers-reduced-motion: reduce) {
  .fxb, .fxb2, .fxw, .fxcar { animation: none !important; }
}

.fb-plink {
  display: inline-flex; align-items: center; gap: 6px; margin-top: 6px;
  font-size: 12.5px; font-weight: 700; color: var(--shu-deep);
  border: 1px solid #e5cfc4; background: var(--shu-wash); border-radius: 999px; padding: 3px 12px;
}
.fb-plink::after { content: "›"; }

/* drill done */
.done-score { text-align: center; padding: 26px 18px 22px; }
.done-score .big { font-family: var(--mincho); font-size: 44px; font-weight: 600; line-height: 1.2; font-variant-numeric: tabular-nums; }
.done-score .big small { font-size: 20px; color: var(--ink-2); }
.done-msg { color: var(--ink-2); font-size: 14px; margin-top: 2px; }

.wrong-list { display: grid; gap: 8px; margin-top: 12px; }
.wrong-item { font-size: 13.5px; padding: 10px 14px; background: var(--card); border: 1px solid var(--line); border-radius: 10px; color: var(--ink-2); display: flex; gap: 9px; }
.wrong-item b { color: var(--ai-deep); font-family: var(--mincho); flex-shrink: 0; }

/* ---------- principles ---------- */

.pl { display: grid; gap: 9px; }
.pl-item {
  display: flex; gap: 14px; align-items: center; width: 100%; text-align: left;
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 15px 16px; cursor: pointer; color: var(--ink);
  -webkit-tap-highlight-color: transparent;
}
.pl-item:active { transform: scale(.985); }
.pl-glyph {
  flex-shrink: 0; width: 46px; height: 46px; border-radius: 50%;
  border: 1.5px solid var(--shu); color: var(--shu-deep);
  display: grid; place-items: center; font-family: var(--mincho); font-size: 20px; font-weight: 600;
  background: var(--shu-wash);
}
.pl-item b { display: block; font-size: 15.5px; font-family: var(--mincho); letter-spacing: .05em; }
.pl-item span { display: block; font-size: 12.5px; color: var(--ink-2); }

.pd-essence {
  font-family: var(--mincho); font-size: 19px; line-height: 1.9; letter-spacing: .04em;
  padding: 18px 20px; border-left: 3px solid var(--shu);
  background: var(--card); border-radius: 0 var(--radius) var(--radius) 0;
  margin: 14px 0 18px;
}
.pd-body { font-size: 15px; line-height: 2.05; }
.rule-list { list-style: none; margin: 10px 0 0; padding: 0; display: grid; gap: 7px; }
.rule-list li {
  background: var(--card); border: 1px solid var(--line); border-radius: 10px;
  padding: 10px 14px; font-size: 13.5px; display: flex; gap: 10px; align-items: baseline;
}
.rule-list li::before { content: "—"; color: var(--shu); font-weight: 700; flex-shrink: 0; }

/* ---------- notes ---------- */

.note-tbl { width: 100%; border-collapse: collapse; font-size: 13.5px; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.note-tbl caption { caption-side: top; text-align: left; font-family: var(--mincho); font-weight: 600; font-size: 15px; padding: 0 2px 8px; letter-spacing: .05em; }
.note-tbl th, .note-tbl td { padding: 9px 12px; border-top: 1px solid var(--line); text-align: left; vertical-align: top; line-height: 1.7; }
.note-tbl thead th { background: var(--card-2); border-top: 0; font-size: 12px; color: var(--ink-2); letter-spacing: .08em; }
.note-tbl .num { font-family: var(--mincho); font-weight: 600; font-size: 15px; white-space: nowrap; color: var(--shu-deep); }
.note-why { color: var(--ink-2); font-size: 12.5px; }
.note-sec { margin-bottom: 30px; }
.note-lead { font-size: 14px; color: var(--ink-2); margin: 4px 0 14px; }
.mark-yes { color: var(--shu-deep); font-weight: 700; }
.mark-no { color: var(--ink-3); }

/* ---------- mock ---------- */

.mock-rule { display: grid; gap: 8px; margin: 14px 0; }
.mock-rule li { list-style: none; }
.mock-rule { padding: 0; }
.mock-rule li { display: flex; gap: 10px; font-size: 14px; background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 10px 14px; }
.mock-rule li b { font-family: var(--mincho); color: var(--shu-deep); flex-shrink: 0; min-width: 4.5em; }

.timer { font-variant-numeric: tabular-nums; font-weight: 700; font-size: 14px; color: var(--ink); display: inline-flex; align-items: center; gap: 5px; }
.timer.low { color: var(--shu-deep); }
.timer::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: currentColor; opacity: .55; }

.mock-ans { display: flex; gap: 10px; margin-top: 16px; }
.mock-ans .ansbtn { min-height: 56px; }
.mock-ans .ansbtn.sel-o { background: var(--shu); border-color: var(--shu); color: #fff; }
.mock-ans .ansbtn.sel-x { background: var(--ai); border-color: var(--ai); color: #fff; }

.mock-nav { display: flex; gap: 9px; margin-top: 14px; }
.mock-nav .btn { flex: 1; }

.palette { display: grid; grid-template-columns: repeat(10, 1fr); gap: 5px; margin-top: 12px; }
.palette button {
  appearance: none; border: 1px solid var(--line-2); background: var(--card); border-radius: 6px;
  aspect-ratio: 1; font-size: 10.5px; color: var(--ink-2); cursor: pointer; padding: 0;
  font-variant-numeric: tabular-nums;
}
.palette button.done { background: var(--ink); border-color: var(--ink); color: #f5f2ea; }
.palette button.cur { outline: 2px solid var(--shu); outline-offset: 1px; }

.il-sub { border-top: 1px dashed var(--line); margin-top: 13px; padding-top: 12px; }
.il-sub-q { font-size: 14.5px; margin: 0 0 9px; line-height: 1.9; }
.il-sub-q b { font-family: var(--mincho); color: var(--shu-deep); margin-right: 6px; }
.il-toggle { display: flex; gap: 8px; }
.il-toggle .ansbtn { min-height: 44px; font-size: 13px; border-radius: 10px; }
.il-toggle .ansbtn i { font-size: 19px; }

.scene { width: 100%; height: auto; display: block; border: 1px solid var(--line); border-radius: 10px; background: #f2f0e6; margin-bottom: 4px; }

/* result */
.res-hero { text-align: center; padding: 30px 18px 24px; }
.res-hanko {
  display: inline-grid; place-items: center; width: 96px; height: 96px; border-radius: 50%;
  font-family: var(--mincho); font-size: 25px; font-weight: 600; letter-spacing: .05em;
  white-space: nowrap; animation: stamp .4s cubic-bezier(.2,1.4,.4,1) both;
}
.res-hanko.pass { border: 3px solid var(--shu); color: var(--shu-deep); background: var(--shu-wash); }
.res-hanko.fail { border: 3px solid var(--ai); color: var(--ai-deep); background: var(--ai-wash); }
.res-score { font-family: var(--mincho); font-size: 40px; font-weight: 600; margin-top: 12px; font-variant-numeric: tabular-nums; }
.res-score small { font-size: 18px; color: var(--ink-2); }
.res-note { color: var(--ink-2); font-size: 13.5px; margin-top: 2px; }

.weak { display: grid; gap: 8px; }
.weak-item { display: flex; align-items: center; gap: 12px; background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 11px 14px; font-size: 14px; color: var(--ink); }
.weak-item .pl-glyph { width: 36px; height: 36px; font-size: 15px; }
.weak-item i { font-style: normal; margin-left: auto; color: var(--ink-3); font-size: 12.5px; font-variant-numeric: tabular-nums; flex-shrink: 0; }

.res-list { display: grid; gap: 7px; }
.res-q {
  background: var(--card); border: 1px solid var(--line); border-radius: 10px; overflow: hidden;
}
.res-q > button {
  appearance: none; border: 0; background: none; width: 100%; text-align: left; cursor: pointer;
  display: flex; gap: 10px; align-items: baseline; padding: 11px 14px; font-size: 13.5px; color: var(--ink);
}
.res-q .rmark { font-family: var(--mincho); font-weight: 600; flex-shrink: 0; }
.res-q .rmark.ok { color: var(--shu); }
.res-q .rmark.ng { color: var(--ai); }
.res-q .rq { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; line-height: 1.6; }
.res-q.open .rq { white-space: normal; }
.res-q .rtoggle { color: var(--ink-3); flex-shrink: 0; font-size: 11px; }
.res-q .fb-card { border: 0; border-top: 1px dashed var(--line); border-radius: 0; }
.res-detail { animation: barswap .16s ease-out both; }

/* ---------- about ---------- */
.about p { font-size: 14.5px; line-height: 2.05; }

/* ---------- footer ---------- */
.foot { padding: 26px 18px 40px; color: var(--ink-3); font-size: 11.5px; line-height: 1.9; border-top: 1px solid var(--line); margin-top: 30px; }
.foot-sig { font-family: var(--mincho); letter-spacing: .08em; margin-top: 10px; }

/* ---------- helpers ---------- */
.mt0 { margin-top: 0; } .mt8 { margin-top: 8px; } .mt16 { margin-top: 16px; } .mt24 { margin-top: 24px; }
.center { text-align: center; }
.muted { color: var(--ink-2); }
.small { font-size: 13px; }

@media (min-width: 480px) {
  .q-text { font-size: 18.5px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}