:root {
  --ink: #172a2d;
  --ink-soft: #385054;
  --paper: #f5f0e6;
  --paper-deep: #ebe3d3;
  --card: #fffdf8;
  --accent: #e95f3c;
  --accent-dark: #bd3f25;
  --teal: #1b6f6a;
  --line: rgba(23, 42, 45, 0.16);
  --shadow: 0 24px 70px rgba(23, 42, 45, 0.12);
  --radius: 22px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 8% 4%, rgba(233, 95, 60, 0.13), transparent 24rem),
    linear-gradient(135deg, #f8f3e9 0%, #eee9dc 100%);
  font-family: "Trebuchet MS", "Gill Sans", sans-serif;
  min-height: 100vh;
}

button, input, select { font: inherit; }
button { color: inherit; }

.page-shell { width: min(1440px, 100%); margin: 0 auto; padding: 0 42px 56px; }
.topbar { height: 88px; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--line); }
.brand { border: 0; background: transparent; display: flex; align-items: center; gap: 12px; padding: 0; cursor: pointer; text-align: left; }
.brand-mark { width: 42px; height: 42px; display: grid; place-items: center; background: var(--ink); color: var(--paper); border-radius: 50% 50% 14% 50%; font-family: Georgia, serif; font-size: 24px; }
.brand strong, .brand small { display: block; }
.brand strong { font: 700 22px/1 Georgia, "Times New Roman", serif; }
.brand small { margin-top: 4px; color: var(--ink-soft); font-size: 12px; letter-spacing: 0.04em; }
.top-actions { display: flex; align-items: center; gap: 10px; }
.mobile-nav { display: none; }
.sync-status { display: inline-flex; align-items: center; gap: 7px; color: var(--ink-soft); font-size: 10px; font-weight: 800; letter-spacing: .06em; text-transform: uppercase; white-space: nowrap; }
.sync-status i { width: 8px; height: 8px; border-radius: 50%; background: var(--ink-soft); box-shadow: 0 0 0 4px rgba(56,80,84,.08); }
.sync-status[data-state="synced"] i { background: var(--teal); box-shadow: 0 0 0 4px rgba(27,111,106,.1); }
.sync-status[data-state="syncing"] i { background: var(--accent); animation: sync-pulse 1s ease-in-out infinite; }
.sync-status[data-state="offline"] i, .sync-status[data-state="error"] i, .sync-status[data-state="locked"] i { background: #a64a31; }
.course-switch {
  display: grid;
  grid-template-columns: auto auto;
  grid-template-rows: auto auto;
  column-gap: 8px;
  align-items: center;
  min-width: 154px;
  padding: 7px 11px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(255,253,248,.58);
  text-align: left;
  cursor: pointer;
}
.course-switch span { color: var(--ink-soft); font-size: 9px; letter-spacing: .12em; text-transform: uppercase; }
.course-switch strong { max-width: 125px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 12px; }
.course-switch b { grid-column: 2; grid-row: 1 / 3; color: var(--accent-dark); font-size: 16px; }
.course-switch:hover, .course-switch.active { border-color: var(--accent); background: var(--card); }
.nav-link { border: 0; background: transparent; padding: 11px 14px; cursor: pointer; color: var(--ink-soft); }
.nav-link.active { color: var(--ink); box-shadow: inset 0 -2px var(--accent); }
.btn { border: 1px solid transparent; border-radius: 999px; min-height: 44px; padding: 0 19px; cursor: pointer; font-weight: 700; transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease; }
.btn:hover { transform: translateY(-2px); }
.btn:focus-visible, .nav-link:focus-visible, .brand:focus-visible, .citation-link:focus-visible, .deep-dive > summary:focus-visible, .abbreviation-accordion > summary:focus-visible { outline: 3px solid rgba(233, 95, 60, 0.3); outline-offset: 3px; }
.btn-ink { background: var(--ink); color: #fff; }
.btn-accent { background: var(--accent); color: #fff; box-shadow: 0 10px 25px rgba(233, 95, 60, 0.24); }
.btn-paper { background: transparent; border-color: var(--line); }

.course-picker { padding: clamp(42px, 7vw, 88px) 0 60px; }
.course-picker-intro { max-width: 780px; }
.course-picker-intro h1 { font-size: clamp(46px, 7vw, 82px); }
.course-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; margin-top: 42px; }
.course-card {
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  min-height: 430px;
  padding: clamp(26px, 4vw, 42px);
  border: 1px solid var(--line);
  border-top: 8px solid var(--course-accent);
  border-radius: var(--radius);
  background: rgba(255,253,248,.82);
  box-shadow: var(--shadow);
}
.course-card::after {
  content: "";
  position: absolute;
  width: 210px;
  height: 210px;
  right: -95px;
  top: -100px;
  border: 32px solid color-mix(in srgb, var(--course-accent) 11%, transparent);
  border-radius: 50%;
  pointer-events: none;
}
.course-card-top { display: flex; justify-content: space-between; align-items: center; color: var(--ink-soft); font-size: 11px; letter-spacing: .08em; text-transform: uppercase; }
.course-card-top i { padding: 6px 9px; border-radius: 999px; background: color-mix(in srgb, var(--course-accent) 13%, transparent); color: var(--ink); font-style: normal; font-weight: 800; }
.course-card h2 { max-width: 620px; margin-top: 28px; font-size: clamp(31px, 4vw, 47px); line-height: 1.04; }
.course-card > p { max-width: 570px; color: var(--ink-soft); line-height: 1.65; }
.course-deadline { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); margin-top: 18px; overflow: hidden; border: 1px solid var(--line); border-radius: 14px; background: color-mix(in srgb, var(--course-accent) 4%, var(--card)); }
.course-deadline-item { position: relative; display: flex; min-width: 0; flex-direction: column; padding: 16px 17px 14px; }
.course-deadline-item + .course-deadline-item { border-left: 1px solid var(--line); }
.course-deadline-item::before { content: ""; position: absolute; top: 0; left: 17px; width: 30px; height: 4px; border-radius: 0 0 4px 4px; background: var(--course-accent); }
.course-deadline-item[data-state="open"]::before, .course-deadline-item[data-state="active"]::before { background: var(--teal); }
.course-deadline-item[data-state="closed"], .course-deadline-item[data-state="past"] { opacity: .62; }
.course-deadline-item > span { color: var(--course-accent); font-size: 9px; font-weight: 800; letter-spacing: .11em; text-transform: uppercase; }
.course-deadline-item[data-state="open"] > span, .course-deadline-item[data-state="active"] > span { color: var(--teal); }
.course-deadline-item > strong { margin: 6px 0 7px; overflow-wrap: anywhere; font: 500 clamp(19px, 2vw, 25px)/1.05 Georgia, "Times New Roman", serif; font-variant-numeric: tabular-nums; letter-spacing: -.025em; }
.course-deadline-item > small { color: var(--ink-soft); font-size: 9px; line-height: 1.35; }
.course-facts { display: flex; gap: 28px; margin: 22px 0; padding: 18px 0; border-block: 1px solid var(--line); }
.course-facts span { color: var(--ink-soft); font-size: 10px; letter-spacing: .08em; text-transform: uppercase; }
.course-facts strong { display: block; margin-bottom: 2px; color: var(--ink); font: 500 25px Georgia, serif; letter-spacing: normal; }
.course-progress { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 12px; margin: auto 0 20px; }
.course-progress > span { height: 7px; overflow: hidden; border-radius: 999px; background: var(--paper-deep); }
.course-progress > span i { display: block; height: 100%; border-radius: inherit; background: var(--course-accent); }
.course-progress strong { color: var(--ink-soft); font-size: 11px; }
.course-card > .btn { align-self: flex-start; }

.dashboard { min-height: 350px; display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(320px, 0.75fr); gap: 40px; align-items: center; padding: 52px 0 42px; }
.eyebrow { margin: 0 0 12px; color: var(--accent-dark); font-size: 12px; font-weight: 800; letter-spacing: 0.14em; text-transform: uppercase; }
h1, h2 { font-family: Georgia, "Times New Roman", serif; letter-spacing: -0.035em; }
h1 { font-size: clamp(44px, 6vw, 76px); line-height: 0.98; margin: 0; font-weight: 500; }
h2 { margin: 0; font-size: 28px; font-weight: 500; }
.lede { max-width: 620px; color: var(--ink-soft); line-height: 1.7; font-size: 17px; }
.hero-actions { display: flex; gap: 10px; margin-top: 28px; }
.progress-card { background: var(--ink); color: #fff; padding: 28px; border-radius: var(--radius); display: flex; align-items: center; gap: 24px; box-shadow: var(--shadow); transform: rotate(1.2deg); }
.progress-card p { color: rgba(255,255,255,.65); line-height: 1.5; margin: 6px 0 0; font-size: 13px; }
.progress-card strong { display: block; margin-top: 3px; }
.muted-label { color: rgba(255,255,255,.58); font-size: 12px; text-transform: uppercase; letter-spacing: .1em; }
.progress-orbit { --progress: 0deg; flex: 0 0 auto; width: 106px; aspect-ratio: 1; display: grid; place-items: center; border-radius: 50%; background: conic-gradient(var(--accent) var(--progress), rgba(255,255,255,.13) 0); position: relative; }
.progress-orbit::after { content: ""; position: absolute; inset: 9px; background: var(--ink); border-radius: 50%; }
.progress-orbit span { position: relative; z-index: 1; font: 700 25px Georgia, serif; }

.deadline-board { display: grid; grid-template-columns: minmax(260px, .7fr) minmax(0, 1.3fr); margin: 0 0 24px; overflow: hidden; border: 1px solid rgba(255,255,255,.78); border-radius: var(--radius); background: var(--card); box-shadow: 0 18px 54px rgba(23,42,45,.1); }
.deadline-lead { position: relative; overflow: hidden; padding: 28px; background: var(--ink); color: #fff; }
.deadline-lead::after { content: ""; position: absolute; right: -70px; bottom: -96px; width: 190px; height: 190px; border: 28px solid color-mix(in srgb, var(--accent) 60%, transparent); border-radius: 50%; }
.deadline-lead > * { position: relative; z-index: 1; }
.deadline-lead .eyebrow { color: #ef9279; }
.deadline-lead h2 { max-width: 360px; font-size: clamp(29px, 3vw, 41px); line-height: 1.05; }
.deadline-lead p:not(.eyebrow) { max-width: 400px; margin: 12px 0 21px; color: rgba(255,255,255,.68); font-size: 13px; line-height: 1.5; }
.deadline-lead a { color: #fff; font-size: 12px; font-weight: 800; text-decoration-color: color-mix(in srgb, var(--accent) 76%, white); text-underline-offset: 4px; }
.deadline-counts { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); }
.deadline-card { position: relative; display: flex; min-width: 0; flex-direction: column; justify-content: center; padding: 27px 28px; border-left: 1px solid var(--line); }
.deadline-card::before { content: ""; position: absolute; top: 0; left: 28px; width: 44px; height: 5px; border-radius: 0 0 5px 5px; background: var(--accent); }
.deadline-card[data-state="open"]::before, .deadline-card[data-state="active"]::before { background: var(--teal); box-shadow: 0 0 0 5px rgba(27,111,106,.1); }
.deadline-card[data-state="closed"], .deadline-card[data-state="past"] { background: var(--paper); }
.deadline-card[data-state="closed"]::before, .deadline-card[data-state="past"]::before { background: var(--ink-soft); opacity: .35; }
.deadline-status { color: var(--accent-dark); font-size: 11px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.deadline-card[data-state="open"] .deadline-status, .deadline-card[data-state="active"] .deadline-status { color: var(--teal); }
.deadline-clock { display: block; min-height: 39px; margin: 9px 0 10px; overflow-wrap: anywhere; font: 500 clamp(26px, 3vw, 38px)/1 Georgia, "Times New Roman", serif; font-variant-numeric: tabular-nums; letter-spacing: -.035em; }
.deadline-card small { color: var(--ink-soft); font-size: 11px; line-height: 1.5; }
.deadline-key { margin-top: 9px; color: color-mix(in srgb, var(--ink-soft) 70%, transparent); font-size: 9px; letter-spacing: .1em; text-transform: uppercase; }

.workspace-grid { display: grid; grid-template-columns: minmax(0, 1.6fr) minmax(280px, .7fr); gap: 24px; align-items: stretch; }
.study-panel, .side-panel { background: rgba(255,253,248,.76); backdrop-filter: blur(16px); border: 1px solid rgba(255,255,255,.75); border-radius: var(--radius); box-shadow: 0 14px 45px rgba(23,42,45,.07); }
.study-panel { padding: 28px; }
.panel-heading, .side-panel-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 18px; }
.topic-pill { background: rgba(27,111,106,.1); color: var(--teal); border-radius: 999px; padding: 8px 12px; font-size: 12px; font-weight: 800; }
.learning-card { position: relative; overflow: hidden; background: var(--card); border: 1px solid var(--line); border-radius: 18px; padding: 34px 36px; margin: 25px 0 18px; min-height: 300px; }
.learning-card::before { content: ""; position: absolute; width: 180px; height: 180px; border: 28px solid rgba(233,95,60,.07); border-radius: 50%; right: -70px; top: -90px; }
.card-index { color: var(--accent); font-weight: 800; font-size: 12px; letter-spacing: .12em; }
.statement { font: 500 clamp(24px, 3vw, 36px)/1.22 Georgia, serif; max-width: 820px; margin: 20px 0 16px; }
.explanation { max-width: 820px; color: var(--ink-soft); font-size: 16px; line-height: 1.65; }
.citation-list { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 25px; }
.citation-link { border: 1px solid var(--line); background: var(--paper); color: var(--ink); border-radius: 999px; padding: 8px 12px; text-decoration: none; font-size: 12px; }
.citation-link:hover { border-color: var(--accent); }
.card-actions { display: flex; justify-content: flex-end; gap: 10px; }

.side-panel { padding: 28px; display: flex; flex-direction: column; }
.side-panel-head span { color: var(--ink-soft); font-size: 13px; }
.topic-progress { margin-top: 22px; display: grid; gap: 14px; }
.topic-row { display: grid; grid-template-columns: 12px 1fr auto; align-items: center; gap: 10px; }
.topic-dot { width: 9px; height: 9px; border-radius: 50%; background: var(--topic-color); }
.topic-row span { font-size: 13px; }
.topic-row strong { font-size: 12px; }
.topic-bar { grid-column: 2 / 4; height: 5px; background: var(--paper-deep); border-radius: 999px; overflow: hidden; }
.topic-bar > i { display: block; width: var(--topic-progress); height: 100%; background: var(--topic-color); }
.exam-callout { margin-top: auto; display: flex; gap: 16px; align-items: center; padding: 22px 0 0; border-top: 1px solid var(--line); }
.exam-number { font: 500 46px/1 Georgia, serif; color: var(--accent); }
.exam-callout strong { font-size: 14px; }
.exam-callout p { margin: 4px 0 0; color: var(--ink-soft); font-size: 12px; line-height: 1.4; }
.toast { position: fixed; right: 24px; bottom: 24px; background: var(--ink); color: white; padding: 12px 17px; border-radius: 12px; opacity: 0; transform: translateY(8px); pointer-events: none; transition: 180ms ease; }
.toast.visible { opacity: 1; transform: translateY(0); }
.toast[data-type="error"] { background: #8b3024; }
.visually-hidden { position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
main:focus { outline: none; }
.loading-state { min-height: 65vh; display: grid; place-items: center; color: var(--ink-soft); }
.btn:disabled, button:disabled { opacity: .42; cursor: not-allowed; transform: none; }
.btn.compact { min-height: 38px; padding-inline: 15px; font-size: 13px; }
.btn.wide { min-width: 180px; }
.panel { background: rgba(255,253,248,.78); border: 1px solid rgba(255,255,255,.8); border-radius: var(--radius); box-shadow: 0 14px 45px rgba(23,42,45,.07); padding: 28px; }
.quiet-stat { display: grid; place-items: center; min-width: 54px; min-height: 36px; padding: 0 12px; border-radius: 999px; background: var(--paper-deep); color: var(--ink-soft); font-weight: 800; font-size: 12px; }
.home-grid { display: grid; grid-template-columns: minmax(0, 1.45fr) minmax(300px, .72fr); gap: 24px; align-items: stretch; }
.topic-panel .topic-progress { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px 18px; }
.topic-row { appearance: none; width: 100%; border: 0; border-bottom: 1px solid var(--line); background: transparent; color: var(--ink); text-align: left; padding: 13px 4px 15px; cursor: pointer; }
.topic-row:hover span { color: var(--accent-dark); }
.topic-row .topic-bar { display: block; }
.home-rail { display: grid; gap: 24px; }
.exam-callout.large { background: var(--accent); color: #fff; border-radius: var(--radius); padding: 28px; margin: 0; border: 0; align-items: flex-start; box-shadow: 0 18px 48px rgba(233,95,60,.18); }
.exam-callout.large .exam-number { color: #fff; font-size: 64px; }
.exam-callout.large p { color: rgba(255,255,255,.75); }
.text-link { border: 0; padding: 10px 0 0; background: transparent; color: #fff; font-weight: 800; cursor: pointer; }
.utility-panel { background: var(--ink); color: #fff; border-radius: var(--radius); padding: 25px; }
.utility-panel h3 { margin: -4px 0 18px; font: 500 24px/1.2 Georgia, serif; }
.utility-panel .eyebrow { color: #ef9279; }
.utility-actions { display: flex; flex-wrap: wrap; gap: 8px; }
.utility-actions button { border: 1px solid rgba(255,255,255,.22); border-radius: 999px; background: transparent; color: #fff; padding: 8px 11px; cursor: pointer; font-size: 12px; }
.utility-actions button:last-child { color: #ffb6a6; }
.history-section { margin-top: 24px; }
.attempt-list { display: grid; margin-top: 16px; }
.attempt-row { display: grid; grid-template-columns: 1fr auto 24px; align-items: center; gap: 18px; padding: 15px 6px; border: 0; border-top: 1px solid var(--line); background: transparent; text-align: left; cursor: pointer; }
.attempt-row:hover { background: rgba(233,95,60,.035); }
.attempt-row strong, .attempt-row small { display: block; }
.attempt-row small { margin-top: 3px; color: var(--ink-soft); }
.attempt-score { font: 500 22px Georgia, serif; text-align: right; }
.attempt-score small { font: 11px "Trebuchet MS", sans-serif; }
.empty-row { padding: 28px 6px 8px; border-top: 1px solid var(--line); color: var(--ink-soft); }
.resume-banner { width: 100%; display: flex; justify-content: space-between; align-items: center; gap: 20px; border: 0; border-radius: 0 0 16px 16px; padding: 14px 20px; background: var(--ink); color: #fff; cursor: pointer; }
.resume-banner span { display: flex; align-items: center; gap: 9px; }
.resume-banner small { color: rgba(255,255,255,.6); }
.resume-banner i, .exam-running-label i { width: 8px; height: 8px; background: var(--accent); border-radius: 50%; box-shadow: 0 0 0 5px rgba(233,95,60,.16); }
.exam-running-label { display: flex; align-items: center; gap: 10px; font-size: 13px; font-weight: 800; }

.study-view { max-width: 1120px; margin: 0 auto; padding-top: 54px; }
.view-header { display: flex; align-items: end; justify-content: space-between; gap: 28px; }
.view-header h1 { font-size: clamp(44px, 5vw, 66px); }
.study-tools { display: grid; grid-template-columns: auto auto; align-items: center; gap: 6px 12px; }
.study-tools label { color: var(--ink-soft); font-size: 11px; text-transform: uppercase; letter-spacing: .1em; }
.study-tools select { grid-column: 2; border: 1px solid var(--line); border-radius: 999px; padding: 10px 34px 10px 14px; background: var(--card); color: var(--ink); }
.study-tools > span { grid-column: 2; color: var(--ink-soft); font-size: 12px; }
.learning-card.full { min-height: 450px; padding: clamp(28px, 5vw, 62px); display: flex; flex-direction: column; justify-content: center; border-top: 7px solid var(--topic-color); box-shadow: var(--shadow); }
.learning-card.full::before { border-color: color-mix(in srgb, var(--topic-color) 15%, transparent); }
.card-meta { display: flex; align-items: center; justify-content: space-between; position: relative; z-index: 1; }
.learning-identity { position: relative; z-index: 1; max-width: 930px; margin-top: 34px; }
.card-focus { margin: 0 0 10px; color: var(--accent-dark); font-size: 11px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.learning-identity h2 { max-width: 900px; font-size: clamp(31px, 4vw, 48px); line-height: 1.08; }
.memory-hook { display: grid; grid-template-columns: 118px minmax(0, 1fr); gap: 18px; align-items: start; margin-top: 22px; padding: 17px 19px; border-radius: 12px; background: color-mix(in srgb, var(--topic-color, var(--accent)) 9%, var(--card)); }
.memory-hook span, .source-overview > span { color: var(--accent-dark); font-size: 10px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
.memory-hook p { margin: -3px 0 0; color: var(--ink); font: 500 20px/1.42 Georgia, serif; }
.detail-overview { position: relative; z-index: 1; display: grid; grid-template-columns: 118px minmax(0, 1fr); gap: 18px; max-width: 930px; margin-top: 12px; padding: 16px 19px; border: 1px solid var(--line); border-left: 4px solid var(--topic-color, var(--accent)); border-radius: 4px 12px 12px 4px; background: var(--card); }
.detail-overview > span { color: var(--accent-dark); font-size: 10px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
.detail-overview p { margin: -3px 0 0; color: var(--ink-soft); font-size: 14px; line-height: 1.65; }
.abbreviation-accordion { position: relative; z-index: 1; max-width: 930px; margin-top: 14px; overflow: hidden; border: 1px dashed color-mix(in srgb, var(--topic-color, var(--accent)) 42%, var(--line)); border-radius: 12px; background: var(--card); }
.abbreviation-accordion > summary { min-height: 54px; display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 10px 14px 10px 19px; list-style: none; cursor: pointer; user-select: none; }
.abbreviation-accordion > summary::-webkit-details-marker { display: none; }
.abbreviation-accordion > summary span { display: flex; align-items: baseline; gap: 10px; }
.abbreviation-accordion > summary b { color: var(--accent-dark); font-size: 10px; letter-spacing: .1em; text-transform: uppercase; }
.abbreviation-accordion > summary small { color: var(--ink-soft); font-size: 11px; }
.abbreviation-accordion > summary i { width: 28px; height: 28px; display: grid; place-items: center; flex: 0 0 auto; border-radius: 50%; background: color-mix(in srgb, var(--topic-color, var(--accent)) 11%, var(--card)); color: var(--accent-dark); font: 400 21px/1 Georgia, serif; transition: transform 180ms ease; }
.abbreviation-accordion[open] > summary i { transform: rotate(90deg); }
.abbreviation-list { display: flex; flex-wrap: wrap; gap: 7px; padding: 2px 19px 16px; animation: detail-reveal 180ms ease both; }
.abbreviation-list span { padding: 5px 8px; border-radius: 8px; background: var(--paper); color: var(--ink-soft); font-size: 12px; line-height: 1.35; }
.abbreviation-list b { color: var(--ink); }
.deep-dive { position: relative; z-index: 1; width: 100%; max-width: 930px; margin: 20px 0 2px; overflow: hidden; border: 2px solid var(--ink); border-radius: 16px; background: var(--card); box-shadow: 0 10px 28px rgba(23,42,45,.08); }
.deep-dive > summary { min-height: 78px; display: flex; align-items: center; justify-content: space-between; gap: 18px; padding: 15px 18px 15px 21px; list-style: none; cursor: pointer; user-select: none; background: var(--ink); color: #fff; }
.deep-dive > summary::-webkit-details-marker { display: none; }
.deep-dive-title b, .deep-dive-title small { display: block; }
.deep-dive-title b { color: #fff; font: 500 20px/1.2 Georgia, serif; }
.deep-dive-title small { margin-top: 5px; color: rgba(255,255,255,.68); font-size: 11px; letter-spacing: .025em; }
.deep-dive-toggle { width: 38px; height: 38px; display: grid; place-items: center; flex: 0 0 auto; border-radius: 50%; background: var(--topic-color, var(--accent)); color: #fff; font: 400 29px/1 Georgia, serif; transition: transform 180ms ease; }
.deep-dive[open] .deep-dive-toggle { transform: rotate(90deg); }
.deep-dive-body { display: grid; gap: 20px; padding: 24px 21px 22px; border-top: 4px solid var(--topic-color, var(--accent)); animation: detail-reveal 220ms ease both; }
.deep-copy { display: grid; }
.deep-copy article, .exam-focus { display: grid; grid-template-columns: 132px minmax(0, 1fr); gap: 20px; align-items: start; padding: 17px 0; border-bottom: 1px solid var(--line); }
.deep-copy article:first-child { padding-top: 0; }
.deep-copy article:last-child { padding-bottom: 0; border-bottom: 0; }
.deep-copy article > span, .exam-focus > span { color: var(--accent-dark); font-size: 10px; font-weight: 800; line-height: 1.45; letter-spacing: .1em; text-transform: uppercase; }
.deep-copy article p, .exam-focus p { margin: -3px 0 0; color: var(--ink-soft); font-size: 15px; line-height: 1.72; }
.deep-chapter-copy { min-width: 0; }
.deep-chapter-copy > ul { display: grid; gap: 9px; margin: 15px 0 0; padding: 14px 16px 14px 34px; border-radius: 10px; background: var(--paper); color: var(--ink-soft); font-size: 13px; line-height: 1.55; }
.deep-chapter-copy > ul li::marker { color: var(--topic-color, var(--accent)); }
.section-sources { display: flex; flex-wrap: wrap; align-items: center; gap: 7px; margin-top: 14px; }
.section-sources > span { margin-right: 2px; color: var(--ink-soft); font-size: 10px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; }
.section-sources a { padding: 5px 8px; border: 1px solid var(--line); border-radius: 999px; color: var(--accent-dark); background: var(--card); font-size: 11px; font-weight: 800; text-decoration: none; }
.section-sources a:hover { border-color: var(--topic-color, var(--accent)); }
.exam-focus { padding-top: 18px; border-top: 1px solid var(--line); }
.exam-focus p { color: var(--ink); font-weight: 700; }
.takeaway-block { margin-top: 22px; padding: 19px 20px; border-left: 4px solid var(--topic-color, var(--accent)); border-radius: 0 14px 14px 0; background: color-mix(in srgb, var(--topic-color, var(--accent)) 7%, var(--card)); }
.deep-dive .takeaway-block { margin-top: 0; }
.takeaway-block > strong { color: var(--ink); font-size: 12px; letter-spacing: .08em; text-transform: uppercase; }
.takeaway-block ul { display: grid; gap: 11px; margin: 15px 0 0; padding: 0; list-style: none; }
.takeaway-block li { position: relative; display: grid; grid-template-columns: minmax(115px, 145px) 1fr; gap: 10px; align-items: start; color: var(--ink-soft); font-size: 14px; line-height: 1.55; }
.takeaway-block li::before { content: "•"; position: absolute; color: var(--topic-color, var(--accent)); }
.takeaway-block li b { padding-left: 14px; color: var(--ink); }
.citation-list { position: relative; z-index: 1; }
.citation-link { display: inline-flex; align-items: center; gap: 9px; max-width: 100%; }
.citation-link > span:last-child { min-width: 0; }
.citation-link strong, .citation-link small { display: block; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.citation-link strong { font-size: 12px; }
.citation-link small { margin-top: 2px; color: var(--ink-soft); font-size: 10px; max-width: 430px; }
.citation-icon { width: 23px; height: 23px; display: grid; place-items: center; flex: 0 0 auto; border-radius: 50%; background: var(--card); }
.study-footer { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.study-footer > p { color: var(--ink-soft); font-size: 12px; }
kbd { min-width: 23px; height: 23px; display: inline-grid; place-items: center; border: 1px solid var(--line); border-bottom-width: 2px; border-radius: 6px; background: var(--card); color: var(--ink); }
.center-state { max-width: 760px; min-height: 70vh; margin: 0 auto; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; }
.center-state h1 { font-size: clamp(38px, 6vw, 64px); }
.center-state > p:not(.eyebrow) { max-width: 570px; color: var(--ink-soft); line-height: 1.6; }
.success-mark, .error-mark { width: 74px; height: 74px; display: grid; place-items: center; margin-bottom: 24px; border-radius: 50%; background: var(--teal); color: white; font: 500 38px Georgia, serif; }
.error-mark { background: var(--accent); }

.exam-prep { min-height: calc(100vh - 145px); padding: 58px 0; display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(350px, .72fr); align-items: center; gap: clamp(40px, 8vw, 110px); }
.exam-prep-copy h1 { font-size: clamp(52px, 7vw, 88px); }
.rule-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; max-width: 650px; margin: 30px 0; }
.rule-grid div { padding: 18px; border: 1px solid var(--line); border-radius: 15px; background: rgba(255,255,255,.35); }
.rule-grid strong, .rule-grid span { display: block; }
.rule-grid strong { font: 500 32px Georgia, serif; }
.rule-grid span { margin-top: 4px; color: var(--ink-soft); font-size: 11px; text-transform: uppercase; letter-spacing: .08em; }
.scoring-note { max-width: 650px; display: grid; grid-template-columns: 150px 1fr; gap: 18px; padding: 20px; background: rgba(27,111,106,.08); border-left: 4px solid var(--teal); }
.scoring-note p { margin: 0; color: var(--ink-soft); line-height: 1.55; font-size: 13px; }
.prep-card { background: var(--ink); color: #fff; border-radius: 4px 28px 28px 4px; padding: 30px; box-shadow: var(--shadow); transform: rotate(1deg); }
.prep-card-top { display: flex; justify-content: space-between; padding-bottom: 20px; border-bottom: 1px solid rgba(255,255,255,.16); color: rgba(255,255,255,.56); font-size: 11px; letter-spacing: .1em; text-transform: uppercase; }
.prep-card ol { list-style: none; margin: 18px 0; padding: 0; }
.prep-card li { display: grid; grid-template-columns: 10px 1fr auto; align-items: center; gap: 11px; padding: 10px 0; border-bottom: 1px solid rgba(255,255,255,.08); font-size: 13px; }
.prep-card li i { width: 8px; height: 8px; border-radius: 50%; }
.prep-card li b { color: rgba(255,255,255,.55); font-size: 11px; }
.last-result { display: grid; gap: 4px; padding-top: 16px; }
.last-result span { color: rgba(255,255,255,.5); font-size: 11px; text-transform: uppercase; letter-spacing: .08em; }

.exam-view { padding: 34px 0 56px; }
.exam-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 26px; }
.exam-header .eyebrow { margin-bottom: 5px; }
.exam-timer { display: flex; align-items: baseline; gap: 9px; }
.exam-timer span { color: var(--ink-soft); font-size: 12px; }
.exam-timer b { font: 500 32px/1 Georgia, serif; font-variant-numeric: tabular-nums; }
.exam-timer b.urgent { color: var(--accent-dark); }
.exam-layout { display: grid; grid-template-columns: minmax(0, 1fr) 250px; gap: 24px; align-items: start; }
.question-sheet { min-height: 610px; display: flex; flex-direction: column; background: var(--card); border: 1px solid var(--line); border-top: 7px solid var(--topic-color); border-radius: var(--radius); padding: clamp(28px, 5vw, 54px); box-shadow: var(--shadow); }
.question-meta { display: flex; justify-content: space-between; color: var(--ink-soft); font-size: 11px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
.question-sheet h1 { margin: 30px 0 8px; font-size: clamp(30px, 4vw, 46px); line-height: 1.15; }
.question-hint { margin-bottom: 22px; color: var(--ink-soft); font-size: 13px; }
.answer-list { display: grid; gap: 10px; }
.answer-option { display: grid; grid-template-columns: 30px 38px 1fr; align-items: center; gap: 11px; padding: 15px 16px; border: 1px solid var(--line); border-radius: 14px; cursor: pointer; transition: 150ms ease; }
.answer-option:hover { border-color: var(--teal); transform: translateX(3px); }
.answer-option.selected { border-color: var(--teal); background: rgba(27,111,106,.07); }
.answer-option input { width: 19px; height: 19px; accent-color: var(--teal); }
.answer-letter { width: 30px; height: 30px; display: grid; place-items: center; border-radius: 50%; background: var(--paper); font: 700 13px Georgia, serif; }
.exam-controls { display: flex; justify-content: space-between; gap: 10px; margin-top: auto; padding-top: 30px; }
.question-map { position: sticky; top: 20px; padding: 22px; border-radius: var(--radius); background: var(--ink); color: white; }
.question-map-head { display: grid; gap: 4px; padding-bottom: 18px; border-bottom: 1px solid rgba(255,255,255,.13); }
.question-map-head span { color: rgba(255,255,255,.55); font-size: 11px; text-transform: uppercase; letter-spacing: .1em; }
.question-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin: 20px 0; }
.question-jump { aspect-ratio: 1; border: 1px solid rgba(255,255,255,.18); border-radius: 9px; background: transparent; color: white; cursor: pointer; }
.question-jump.answered { background: var(--teal); border-color: var(--teal); }
.question-jump.current { outline: 2px solid var(--accent); outline-offset: 2px; }
.map-legend { display: flex; gap: 13px; color: rgba(255,255,255,.6); font-size: 10px; }
.map-legend span { display: flex; align-items: center; gap: 5px; }
.legend-dot { width: 8px; height: 8px; border: 1px solid rgba(255,255,255,.4); border-radius: 2px; }
.legend-dot.answered { background: var(--teal); border-color: var(--teal); }
.submit-link { width: 100%; margin-top: 24px; padding: 12px 0 0; border: 0; border-top: 1px solid rgba(255,255,255,.13); background: transparent; color: #ffad98; cursor: pointer; font-size: 11px; }

.results-view { padding: 34px 0 60px; }
.result-hero { display: grid; grid-template-columns: 1fr auto; gap: 30px; padding: clamp(28px, 5vw, 52px); border-radius: var(--radius); background: var(--ink); color: #fff; box-shadow: var(--shadow); }
.result-hero .eyebrow { color: #ef9279; }
.result-hero h1 { font-size: clamp(48px, 7vw, 78px); }
.result-hero p { color: rgba(255,255,255,.65); }
.score-seal { width: 155px; aspect-ratio: 1; align-self: center; display: flex; flex-direction: column; align-items: center; justify-content: center; border: 1px solid rgba(255,255,255,.25); border-radius: 50%; }
.score-seal strong { font: 500 40px Georgia, serif; }
.score-seal span { color: rgba(255,255,255,.55); font-size: 10px; }
.result-hero.passed .score-seal { box-shadow: inset 0 0 0 8px rgba(27,111,106,.5); }
.result-hero.failed .score-seal { box-shadow: inset 0 0 0 8px rgba(233,95,60,.4); }
.result-facts { grid-column: 1 / -1; display: flex; gap: 40px; padding-top: 20px; border-top: 1px solid rgba(255,255,255,.13); }
.result-facts span, .result-facts small, .result-facts b { display: block; }
.result-facts small { color: rgba(255,255,255,.5); font-size: 10px; text-transform: uppercase; letter-spacing: .1em; }
.result-facts b { margin-top: 4px; }
.results-grid { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(280px, .6fr); gap: 24px; margin-top: 24px; }
.breakdown-list { display: grid; gap: 14px; margin-top: 22px; }
.breakdown-row { display: grid; grid-template-columns: 9px 140px 1fr 70px; align-items: center; gap: 10px; font-size: 12px; }
.breakdown-row > i { width: 8px; height: 8px; border-radius: 50%; background: var(--topic-color); }
.breakdown-row > div { height: 7px; background: var(--paper-deep); border-radius: 999px; overflow: hidden; }
.breakdown-row > div b { display: block; width: var(--topic-progress); height: 100%; background: var(--topic-color); }
.breakdown-row > strong { text-align: right; }
.result-actions { border-radius: var(--radius); padding: 28px; background: var(--accent); color: white; }
.result-actions .eyebrow { color: rgba(255,255,255,.65); }
.result-actions p { line-height: 1.6; color: rgba(255,255,255,.75); }
.result-actions .btn { width: 100%; margin-top: 8px; }
.result-actions .btn-paper { border-color: rgba(255,255,255,.45); color: white; }
.question-review { margin-top: 42px; }
.result-question { border-top: 1px solid var(--line); }
.result-question:last-child { border-bottom: 1px solid var(--line); }
.result-question summary { list-style: none; display: grid; grid-template-columns: 42px 1fr auto; gap: 14px; align-items: center; padding: 18px 4px; cursor: pointer; }
.result-question summary::-webkit-details-marker { display: none; }
.result-question summary small, .result-question summary strong { display: block; }
.result-question summary small { margin-bottom: 4px; color: var(--ink-soft); font-size: 10px; text-transform: uppercase; letter-spacing: .08em; }
.result-question summary strong { font-size: 14px; }
.result-index { width: 32px; height: 32px; display: grid; place-items: center; border-radius: 50%; background: var(--paper-deep); font-size: 12px; }
.result-index.perfect { background: var(--teal); color: #fff; }
.result-index.partial { background: rgba(233,95,60,.12); color: var(--accent-dark); }
.result-body { margin: 0 0 24px 50px; padding: 24px; border-radius: 16px; background: rgba(255,253,248,.8); }
.result-options { display: grid; gap: 7px; }
.result-option { display: grid; grid-template-columns: 24px 1fr; align-items: start; gap: 8px; color: var(--ink-soft); }
.result-option p { margin: 0; }
.result-option small { color: var(--accent-dark); font-weight: 800; }
.result-option.correct { color: var(--teal); }
.result-option.wrong { color: var(--accent-dark); }
.result-explanation { margin-top: 20px; padding-top: 18px; border-top: 1px solid var(--line); }
.result-explanation p { color: var(--ink-soft); line-height: 1.6; }
.result-explanation .takeaway-block { --topic-color: var(--teal); }
.result-explanation .learning-identity { margin: 0 0 22px; }
.result-explanation .learning-identity h2 { font-size: clamp(25px, 3vw, 34px); }
.result-explanation .memory-hook { --topic-color: var(--teal); grid-template-columns: 82px 1fr; }
.result-explanation .memory-hook p { margin: -3px 0 0; color: var(--ink); font-family: Georgia, serif; font-size: 18px; }
.result-explanation .detail-overview, .result-explanation .abbreviation-accordion { --topic-color: var(--teal); }
.result-explanation .deep-dive { --topic-color: var(--teal); }

.reveal { animation: reveal 480ms cubic-bezier(.2,.7,.2,1) both; }
.delay-1 { animation-delay: 70ms; }
.delay-2 { animation-delay: 130ms; }
.delay-3 { animation-delay: 190ms; }
@keyframes reveal { from { opacity: 0; transform: translateY(13px); } to { opacity: 1; transform: translateY(0); } }
@keyframes detail-reveal { from { opacity: 0; transform: translateY(-5px); } to { opacity: 1; transform: translateY(0); } }
@keyframes sync-pulse { 50% { opacity: .35; transform: scale(.76); } }

@media (max-width: 850px) {
  body {
    padding-bottom: calc(78px + env(safe-area-inset-bottom));
    -webkit-tap-highlight-color: transparent;
  }
  .page-shell { padding: 0 18px 42px; }
  .topbar {
    position: sticky;
    top: 0;
    z-index: 50;
    height: calc(70px + env(safe-area-inset-top));
    margin-inline: -18px;
    padding: env(safe-area-inset-top) 18px 0;
    background: rgba(245,240,230,.9);
    border-bottom-color: rgba(23,42,45,.11);
  }
  .brand { gap: 9px; min-width: 0; }
  .brand small, .top-actions > .nav-link, .top-actions > .btn-ink { display: none; }
  .top-actions { min-width: 0; gap: 9px; }
  .sync-status { flex: 0 0 auto; width: 8px; font-size: 0; gap: 0; }
  .course-switch { min-width: 0; grid-template-columns: minmax(0, 1fr) auto; }
  .course-switch span { display: none; }
  .course-switch strong { max-width: 120px; }
  .mobile-nav {
    position: fixed;
    z-index: 60;
    right: 12px;
    bottom: calc(10px + env(safe-area-inset-bottom));
    left: 12px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 4px;
    max-width: 520px;
    margin-inline: auto;
    padding: 6px;
    border: 1px solid rgba(255,255,255,.13);
    border-radius: 20px;
    background: rgba(23,42,45,.96);
    box-shadow: 0 16px 44px rgba(23,42,45,.28);
  }
  .mobile-nav button {
    min-width: 0;
    min-height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    border: 0;
    border-radius: 15px;
    background: transparent;
    color: rgba(255,255,255,.64);
    cursor: pointer;
  }
  .mobile-nav button span { font: 500 20px/1 Georgia, serif; }
  .mobile-nav button b { font-size: 11px; }
  .mobile-nav button.active { background: var(--card); color: var(--ink); }
  .course-grid { grid-template-columns: 1fr; }
  .course-card { min-height: 0; }
  .dashboard, .workspace-grid { grid-template-columns: 1fr; }
  .dashboard { padding: 32px 0 25px; min-height: auto; }
  .progress-card { transform: none; }
  .deadline-board { grid-template-columns: 1fr; }
  .deadline-counts { border-top: 1px solid rgba(255,255,255,.12); }
  .deadline-card:first-child { border-left: 0; }
  .learning-card { padding: 26px 22px; min-height: 280px; }
  .statement { font-size: 27px; }
  .panel-heading { display: block; }
  .topic-pill { display: inline-block; margin-top: 12px; }
  .card-actions .btn { flex: 1; padding-inline: 10px; }
  .home-grid, .exam-prep, .exam-layout, .results-grid { grid-template-columns: 1fr; }
  .topic-panel .topic-progress { grid-template-columns: 1fr; }
  .view-header { align-items: flex-start; flex-direction: column; }
  .study-tools { width: 100%; grid-template-columns: 1fr; }
  .study-tools label, .study-tools select, .study-tools > span { grid-column: 1; }
  .study-tools select { width: 100%; }
  .study-view { padding-top: 28px; padding-bottom: 128px; }
  .learning-card.full { min-height: 0; }
  .learning-identity { margin-top: 26px; }
  .learning-identity h2 { font-size: clamp(29px, 9vw, 39px); }
  .memory-hook, .detail-overview, .deep-copy article, .exam-focus { grid-template-columns: 1fr; gap: 7px; }
  .memory-hook p { font-size: 18px; }
  .deep-dive > summary { min-height: 82px; padding-inline: 16px; }
  .deep-dive-title b { font-size: 18px; }
  .deep-dive-body { padding-inline: 16px; }
  .deep-copy article p, .exam-focus p { margin-top: 0; }
  .deep-chapter-copy > ul { padding-left: 29px; }
  .takeaway-block li { grid-template-columns: 1fr; gap: 2px; }
  .study-footer {
    position: fixed;
    z-index: 55;
    right: 0;
    bottom: calc(76px + env(safe-area-inset-bottom));
    left: 0;
    align-items: stretch;
    flex-direction: column;
    padding: 10px 18px;
    border-top: 1px solid rgba(23,42,45,.12);
    background: var(--paper);
    box-shadow: 0 -12px 34px rgba(23,42,45,.1);
  }
  .study-footer > p { display: none; }
  .study-footer .card-actions { width: min(100%, 520px); display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); margin-inline: auto; }
  .study-footer .btn { min-height: 50px; }
  .exam-prep { padding-top: 38px; }
  .prep-card { transform: none; }
  .question-map { position: static; order: -1; }
  .question-grid { grid-template-columns: repeat(10, 1fr); }
  .question-jump { border-radius: 8px; font-size: 11px; }
  .question-sheet { min-height: 0; }
  .result-hero { grid-template-columns: 1fr; }
  .score-seal { width: 130px; justify-self: start; }
  .result-facts { gap: 24px; }
  .breakdown-row { grid-template-columns: 9px 110px 1fr 62px; }
  .result-body { margin-left: 0; padding: 18px; }
  .resume-banner small { display: none; }
}

@media (max-width: 540px) {
  .page-shell { padding-inline: 14px; }
  .topbar { margin-inline: -14px; padding-inline: 14px; }
  .brand strong { font-size: 20px; }
  .brand-mark { width: 38px; height: 38px; }
  .course-switch { padding: 7px 9px; }
  .course-switch strong { max-width: min(28vw, 105px); }
  .course-picker { padding-top: 30px; }
  .course-picker-intro h1 { font-size: 42px; }
  .course-grid { gap: 16px; margin-top: 26px; }
  .course-card { padding: 22px 19px; border-top-width: 6px; }
  .course-card h2 { margin-top: 21px; font-size: 31px; }
  .course-card > p { font-size: 14px; line-height: 1.55; }
  .course-deadline { grid-template-columns: 1fr; }
  .course-deadline-item + .course-deadline-item { border-top: 1px solid var(--line); border-left: 0; }
  .course-facts { gap: 18px; }
  h1 { font-size: clamp(37px, 10.5vw, 42px); line-height: 1.01; }
  .dashboard { gap: 18px; padding-top: 26px; }
  .intro-copy .lede { margin: 17px 0 0; font-size: 15px; line-height: 1.58; }
  .hero-actions { align-items: stretch; flex-direction: column; gap: 8px; margin-top: 20px; }
  .hero-actions .btn { width: 100%; min-height: 50px; }
  .progress-card { padding: 19px; gap: 15px; border-radius: 18px; }
  .progress-card p { font-size: 12px; }
  .progress-orbit { width: 78px; }
  .deadline-lead { padding: 23px 21px; }
  .deadline-counts { grid-template-columns: 1fr; }
  .deadline-card { padding: 22px 21px; border-left: 0; border-top: 1px solid var(--line); }
  .deadline-card::before { left: 21px; }
  .deadline-clock { font-size: 29px; }
  .panel, .study-panel, .side-panel { padding: 20px; }
  .home-grid, .home-rail { gap: 16px; }
  .topic-row { min-height: 50px; padding-block: 11px 13px; }
  .history-section { margin-top: 16px; }
  .study-view { padding-top: 22px; }
  .view-header { gap: 18px; }
  .view-header h1 { font-size: 34px; }
  .study-tools { grid-template-columns: minmax(0, 1fr) auto; gap: 7px 10px; }
  .study-tools label { grid-column: 1 / -1; }
  .study-tools select { grid-column: 1; min-height: 46px; padding-block: 9px; font-size: 16px; }
  .study-tools > span { grid-column: 2; align-self: center; white-space: nowrap; }
  .learning-card.full { margin: 17px 0 0; padding: 22px 18px 25px; border-top-width: 6px; border-radius: 17px; }
  .learning-identity { margin-top: 23px; }
  .learning-identity h2 { font-size: clamp(28px, 8.4vw, 34px); line-height: 1.1; }
  .memory-hook { margin-top: 17px; padding: 15px; }
  .memory-hook p { font-size: 17px; line-height: 1.45; }
  .detail-overview { padding: 15px; }
  .deep-dive { margin-top: 16px; }
  .deep-dive > summary { min-height: 70px; }
  .deep-dive-title b { font-size: 17px; }
  .deep-dive-body { gap: 15px; padding: 18px 14px; }
  .abbreviation-accordion > summary { min-height: 50px; padding-left: 14px; }
  .study-footer { padding-inline: 14px; }
  .study-footer .card-actions { gap: 8px; }
  .study-footer .btn { padding-inline: 10px; font-size: 13px; }
  .rule-grid, .scoring-note { grid-template-columns: 1fr; }
  .exam-view { padding-top: 20px; padding-bottom: 100px; }
  .exam-header { margin-bottom: 16px; }
  .exam-timer { flex-direction: column; align-items: flex-end; gap: 2px; }
  .exam-timer b { font-size: 27px; }
  .question-map { overflow: hidden; padding: 16px; border-radius: 17px; }
  .question-map-head { display: flex; align-items: center; justify-content: space-between; padding-bottom: 12px; }
  .question-grid { display: flex; gap: 8px; overflow-x: auto; margin: 13px -2px 0; padding: 3px 2px 8px; scrollbar-width: none; }
  .question-grid::-webkit-scrollbar { display: none; }
  .question-jump { flex: 0 0 39px; width: 39px; }
  .map-legend, .question-map .submit-link { display: none; }
  .question-sheet { padding: 22px 17px; }
  .question-sheet h1 { font-size: 29px; }
  .answer-option { min-height: 58px; grid-template-columns: 24px 30px 1fr; padding: 13px 11px; line-height: 1.42; }
  .exam-controls {
    position: sticky;
    z-index: 40;
    bottom: calc(10px + env(safe-area-inset-bottom));
    margin: 24px -8px -12px;
    padding: 10px 8px 2px;
    background: linear-gradient(180deg, transparent, var(--card) 24%);
  }
  .exam-controls .btn { min-height: 48px; padding-inline: 13px; }
  .result-hero { padding: 26px 22px; }
  .result-facts { justify-content: space-between; gap: 10px; }
  .breakdown-row { grid-template-columns: 8px 92px 1fr 56px; gap: 7px; }
  .citation-link { width: 100%; min-height: 48px; border-radius: 12px; }
  .toast { right: 14px; bottom: calc(150px + env(safe-area-inset-bottom)); left: 14px; text-align: center; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; }
}