:root {
  color-scheme: light;
  --paper: #f5f0e6; --paper-2: #fbf8f0; --surface: #ffffff;
  --ink: #1c1b19; --ink-2: #5b574f; --muted: #6c685f;
  --accent: #c23a2b; --accent-hover: #a52f22; --soft: #f6e7e1; --line: #e0d8c7;
  --azurite: #2f6f73; --gamboge: #d8a23a; --gamboge-ink: #9a6d12;
  --serif: "Times New Roman", "Songti SC", "Noto Serif SC", "Source Han Serif SC", "STSong", "SimSun", serif;
  --kai: "KaiTi", "STKaiti", "Kaiti SC", "Songti SC", serif;
  --danger: #9d3d35; --radius: 18px; --radius-sm: 10px;
  /* Shared semantic colors retain the existing state and component palettes. */
  --glass-surface: rgb(245 240 230 / .88);
  --on-accent: #fff; --selection: #f3d5cf; --field-surface: #fffefc;
  --record-surface: #fffefc99; --quiet-surface: #fdfbf7; --notice-surface: #faeee9;
  --code-ink: #ede6db; --code-surface: #2b2724; --note-grid: #e6ddc9;
  --danger-line: #dfc6bf; --danger-muted: #87564e; --danger-button-line: #e3c8c1;
  --danger-hover: #852e28; --danger-soft: #fff0ea; --danger-hover-line: #c49688;
  --error-surface: #fff1eb; --error-line: #dfb8a9; --error-ink: #913e31;
  --reward-line: #dcccb7; --reward-soft: #f8efe2; --reward-ink: #805222; --reward-muted: #735f46;
  --card-line: #dedbd5; --locked-surface: #f0efec; --reward-card-line: #d9bd8a;
  --reward-card-surface: #fffcf5; --reward-accent: #d9ac5d;
  --emblem-line: #d5d2cb; --emblem-surface: #e5e3de; --status-ink: #65625a;
  --reward-emblem-line: #dcb778; --reward-emblem-surface: #f9e8c5; --reward-emblem-ink: #88591d;
  --card-heading: #56534d; --reward-heading: #49331c; --card-muted: #69655d;
  --progress-fill: #888277; --reward-progress: #b78434;
  --success-line: #c5d8ce; --success-soft: #edf5ef; --success-ink: #3d7059; --success-muted: #526b5d;
  --summary-surface: #fffdf8; --summary-line: #e5e8df;
  --growth-line: #a9c9a6; --growth-soft: #f2f8f0; --growth-ink: #3d7a3a;
  --group-line: #c6d8d8; --group-soft: #edf5f4; --group-ink: #366b68;
  --home-surface: #ffffffed; --home-refresh: #ffffffa6; --quota-track: #e7e0d0;
  --tile-neutral: #e4e4e3; --tile-azurite: #e6eeee; --tile-accent: #f8e7e6;
  --tile-gamboge: #f6e7c1; --tile-reverse: #ffffff12; --reverse-line: rgba(245,240,230,.25);
  --seal-gamboge: #c8901a; --review-pen: #ee6a52;
  /* 图表里最多 8 个分区各占一种颜色，两个主题共用，在白色面板上都不低于 3:1。 */
  --series-1: #c23a2b; --series-2: #2f6f73; --series-3: #b07a12; --series-4: #3b5bb5;
  --series-5: #7a4fa3; --series-6: #3d7a3a; --series-7: #b03a7a; --series-8: #5b574f;
  --shadow-rgb: 28,27,25; --menu-shadow-rgb: 60,40,20; --pointer-glow-rgb: 238,106,82;
  --radius-xs: 6px; --radius-compact: 4px; --radius-badge: 7px; --radius-muted: 8px;
  --radius-option: 12px; --radius-field: 12px; --radius-home: 16px; --radius-large: 24px; --radius-chip: 20px;
  --radius-pill: 999px; --radius-round: 50%; --radius-flat: 0;
  --radius-book: 8px 15px 15px 8px;
  --motion-fast: 150ms; --motion-enter: 220ms; --motion-ease: cubic-bezier(.2, .7, .25, 1);
  --space-1: 4px; --space-2: 8px; --space-3: 12px; --space-4: 16px;
  --space-5: 24px; --space-6: 32px; --space-7: 48px; --space-8: 64px;
  --text-xs: 12px; --text-sm: 13px; --text-base: 15px; --text-lg: 18px;
  --text-xl: 22px; --text-2xl: 26px; --text-3xl: 32px;
  --text-meta: 11px; --text-md: 14px;
  --lh-ui: 1.5; --lh-prose: 1.85; --lh-heading: 1.3;
  --measure: 38em; --record-list-width: 320px; --form-aside-width: 240px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--ink); background: var(--paper); font-size: var(--text-base); line-height: var(--lh-ui);
  text-autospace: normal;
  text-spacing-trim: normal;
  line-break: strict;
}

/* Both themes share component rules; only their visual tokens change. */
html[data-theme="ink"] {
  --paper: #f5f0e6; --paper-2: #fbf8f0; --surface: #ffffff;
  --ink: #1c1b19; --ink-2: #5b574f; --muted: #6c685f;
  --accent: #c23a2b; --accent-hover: #a52f22; --soft: #f6e7e1; --line: #e0d8c7;
  --azurite: #2f6f73; --gamboge: #d8a23a; --gamboge-ink: #9a6d12;
  --glass-surface: rgb(245 240 230 / .88); --radius-round: 50%;
  --review-pen: #ee6a52;
  --selection: #f3d5cf; --field-surface: #fffefc; --record-surface: #fffefc99;
  --quiet-surface: #fdfbf7; --notice-surface: #faeee9; --note-grid: #e6ddc9;
  --home-surface: #ffffffed; --home-refresh: #ffffffa6; --quota-track: #e7e0d0;
  --tile-neutral: #e4e4e3; --tile-azurite: #e6eeee; --tile-accent: #f8e7e6; --tile-gamboge: #f6e7c1;
  --shadow-rgb: 28,27,25; --menu-shadow-rgb: 60,40,20; --pointer-glow-rgb: 238,106,82;
  --radius: 18px; --radius-sm: 10px; --radius-xs: 6px; --radius-compact: 4px;
  --radius-badge: 7px; --radius-muted: 8px; --radius-option: 12px; --radius-home: 16px;
  --radius-large: 24px; --radius-chip: 20px; --radius-book: 8px 15px 15px 8px;
}
html[data-theme="qixi"] {
  --paper: #eaf0e9; --paper-2: #f3f7f1; --surface: #fcfefa;
  --ink: #203b35; --ink-2: #4d655b; --muted: #586c61;
  --accent: var(--scene-accent, #32645b); --accent-hover: color-mix(in srgb, var(--scene-accent, #32645b) 82%, var(--ink));
  --soft: #e0ece3; --line: #cddcd0;
  --azurite: #3e756d; --gamboge: #c29a51; --gamboge-ink: #806226;
  --glass-surface: rgb(247 252 250 / .88); --radius-round: 50%;
  --review-pen: var(--scene-accent, #32645b);
  --selection: #c8ddd0; --field-surface: #fafdf8; --record-surface: #fafdf899;
  --quiet-surface: #f5f9f2; --notice-surface: #eaf3e9; --note-grid: #dae5d7;
  --home-surface: #fcfefaed; --home-refresh: #fcfefaa6; --quota-track: #dce6d8;
  --tile-neutral: #e1e8de; --tile-azurite: #dfece6; --tile-accent: #dcebe0; --tile-gamboge: #efe7cc;
  --shadow-rgb: 32,59,53; --menu-shadow-rgb: 32,59,53; --pointer-glow-rgb: 111,164,143;
  --radius: 24px; --radius-sm: 14px; --radius-xs: 10px; --radius-compact: 12px;
  --radius-badge: 10px; --radius-muted: 12px; --radius-option: 16px; --radius-home: 24px;
  --radius-large: 32px; --radius-chip: 24px; --radius-book: 10px 18px 18px 10px;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
body { margin: 0; }
.cursor-fx-canvas { position: fixed; inset: 0; width: 100%; height: 100%; pointer-events: none; z-index: 0; animation: cursor-fx-in 600ms ease-out both; }
@keyframes cursor-fx-in { from { opacity: 0; } to { opacity: 1; } }
.container { position: relative; z-index: 1; }
::selection { color: var(--ink); background: var(--selection); }
a { color: var(--accent); text-underline-offset: 4px; }
a:hover { color: var(--accent-hover); }
button, input, textarea, select, a, summary { -webkit-tap-highlight-color: transparent; }
:where(button, input, textarea, select, a, summary, form, #detail) { scroll-margin-top: 100px; }
:where(button, input, textarea, select, a, summary):focus-visible { outline: 3px solid var(--accent); outline-offset: 4px; }
.container { max-width: 1220px; margin: 0 auto; padding: 0 32px 64px; }
.header { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 26px 0; border-bottom: 1px solid var(--line); }
.brand { display: flex; align-items: center; gap: 13px; min-width: 0; }
.brand-mark { display: grid; place-items: center; flex-shrink: 0; width: 40px; height: 40px; border: 2px solid var(--accent); border-radius: var(--radius-xs); background: transparent; color: var(--accent); font: 500 27px/1 var(--kai); transform: rotate(-6deg); }
.brand-copy h1, .header h1 { margin: 0; font-family: var(--serif); font-size: 23px; font-weight: 500; letter-spacing: .04em; }
.header .muted { margin: 3px 0 0; font-size: 12px; }
.user-meta { position: relative; z-index: 20; display: flex; min-width: 0; align-items: center; justify-content: flex-end; gap: 16px; text-align: right; }
.my-avatar-wrap { display: flex; flex-shrink: 0; align-items: center; gap: 10px; }
.avatar {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-round);
  overflow: hidden;
  background: var(--accent);
  color: var(--on-accent);
  font-size: 14px;
  font-weight: 650;
  object-fit: cover;
  user-select: none;
}
.avatar-sm { width: 22px; height: 22px; font-size: 11px; }
.account-menu { position: relative; margin: 0; }
.account-menu > summary, .account-menu[open] > summary {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin: 0;
  padding: 0;
  border-radius: var(--radius-xs);
  list-style: none;
}
.account-menu > summary::-webkit-details-marker { display: none; }
.account-menu-arrow { width: 0; height: 0; border: 4px solid transparent; border-top-color: var(--muted); border-bottom: 0; }
.account-summary-name { min-width: 0; max-width: 140px; overflow: hidden; color: var(--ink); font-size: var(--text-sm); font-weight: 600; text-overflow: ellipsis; white-space: nowrap; }
#my-avatar > .avatar { width: 100%; height: 100%; font-size: inherit; }
.account-menu-panel {
  position: absolute;
  top: calc(100% + var(--space-2));
  right: 0;
  z-index: 20;
  width: 220px;
  max-width: calc(100vw - 2 * var(--space-4));
  padding: var(--space-2) 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface);
  box-shadow: 0 8px 24px rgba(var(--shadow-rgb),.10);
  text-align: left;
}
.account-menu-panel > :is(label, button, a) {
  display: flex;
  align-items: center;
  width: 100%;
  min-height: 40px;
  margin: 0;
  padding: 0 var(--space-4);
  border: 0;
  border-radius: var(--radius-flat);
  background: none;
  color: var(--ink);
  font-size: var(--text-sm);
  font-weight: 550;
  text-align: left;
  text-decoration: none;
  cursor: pointer;
}
.account-menu-panel > :is(label, button, a):hover:not(:disabled) { background: var(--soft); }
.account-menu-panel > :is(label, button, a):focus-visible { outline: 3px solid var(--accent); outline-offset: -3px; }
.account-menu-panel > #remove-avatar-btn:hover { color: var(--danger); }
.author-line { display: flex; align-items: center; gap: 8px; }
.trial-banner { flex-shrink: 0; margin: 0; padding: 2px 6px; border: 1px solid var(--line); border-radius: var(--radius-badge); background: var(--soft); color: var(--accent-hover); font-size: 11px; font-weight: 550; line-height: 1.4; white-space: nowrap; }
#user-info-wrap { display: grid; grid-template-columns: minmax(0, auto) auto; justify-content: end; align-items: baseline; min-width: 0; max-width: 290px; overflow-wrap: anywhere; font-variant-numeric: tabular-nums; }
#user-info-wrap .user-name { grid-column: 1; grid-row: 1; color: var(--ink); font-size: var(--text-base); }
#user-info-wrap .user-context { grid-column: 1 / -1; grid-row: 2; color: var(--muted); font-size: var(--text-xs); }
#user-info-wrap > .link-button { grid-column: 2; grid-row: 1; justify-self: start; white-space: nowrap; }
#user-info-wrap > .inline-form { grid-column: 1 / -1; }
#user-info-wrap .inline-form { display: flex; flex-wrap: wrap; align-items: flex-end; gap: 8px; text-align: left; }
#user-info-wrap .inline-form label { font-size: 12px; }
#user-info-wrap .inline-form input { min-width: 140px; }
.account-menu-panel #user-info-wrap { justify-content: start; max-width: none; margin: 0 var(--space-4) var(--space-2); text-align: left; }
.account-menu-panel #user-info-wrap .inline-form input { width: 100%; min-width: 0; }
.account-menu-panel #logout { margin: 0; }
.link-button {
  min-height: 0;
  margin-left: 6px;
  padding: 0;
  border: 0;
  background: none;
  color: var(--accent-hover);
  font-size: 12px;
  font-weight: 550;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}
.link-button:hover { background: none; }
#logout { padding: 7px 12px; font-size: 13px; flex-shrink: 0; white-space: nowrap; }
h1, h2, h3, h4, h5, h6 { line-height: var(--lh-heading); font-weight: 650; text-wrap: balance; }
h1, h2 { font-family: var(--serif); font-weight: 500; }
h2 { margin: 0 0 var(--space-3); font-size: var(--text-2xl); letter-spacing: -.02em; }
h3 { margin: var(--space-5) 0 var(--space-3); font-size: var(--text-lg); }
h4 { margin: var(--space-5) 0 var(--space-2); font-size: var(--text-md); }
p { margin: 10px 0; }
p, li, .muted, .field-hint, .prose, .mistake-text p, .empty-state p { text-wrap: pretty; }
.muted, .field-hint { color: var(--ink-2); font-size: var(--text-sm); }
.eyebrow { color: var(--accent); font-size: var(--text-xs); font-weight: 600; letter-spacing: .06em; }
.multiline { white-space: pre-wrap; overflow-wrap: anywhere; }
.panel { padding: 28px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); min-width: 0; }
.auth-grid { display: grid; grid-template-columns: minmax(0, 1fr); gap: 0; width: min(100%, 460px); min-height: calc(100svh - 190px); align-content: center; margin: 40px auto 0; }
.auth-grid .panel { margin: 0; padding: 32px; }
.auth-heading { margin-bottom: 24px; font-size: var(--text-sm); }
.auth-heading a { color: var(--ink-2); }
.auth-switch { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 6px; padding: 6px; margin-bottom: 18px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--paper-2); }
.auth-switch [role="tab"] { border-color: transparent; background: transparent; color: var(--ink-2); }
.auth-switch [aria-selected="true"] { border-color: var(--line); background: var(--surface); color: var(--accent); }
.auth-grid .form-grid { grid-template-columns: minmax(0, 1fr); gap: 0; }
.auth-grid .form-heading { margin-bottom: 24px; }
.auth-grid .form-footer { display: grid; justify-items: center; gap: 16px; }
.auth-grid .auth-trial { justify-self: center; margin-top: 22px; font-size: var(--text-sm); }
html[data-view="auth"] .header .brand-copy > p { display: none; }
@media (max-width: 480px) {
  .auth-grid { margin-top: 24px; min-height: calc(100svh - 150px); }
  .auth-grid .panel { padding: 24px 18px; }
}
.auth-heading h2 { font-size: 28px; }
.form-heading { margin-bottom: 26px; }
.form-heading h2 { margin-bottom: 6px; }
.form-heading p { margin: 6px 0; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 20px; }
.form-grid > * { min-width: 0; }
.form-section { margin: var(--space-6) 0; padding-top: var(--space-4); border-top: 1px solid var(--line); }
.form-section .field-hint, .form-section > p, .form-section-intro > p { max-width: var(--measure); line-height: var(--lh-prose); }
.form-footer { margin: var(--space-5) 0 0; font-size: var(--text-sm); }
.form-footer > a { display: inline-block; margin-top: var(--space-3); }
.photo-input { padding: var(--space-4); border: 1px dashed var(--line); border-radius: var(--radius-sm); background: transparent; }
.photo-input h3 { margin-top: 0; font-size: var(--text-base); }
.photo-input > p { max-width: var(--measure); line-height: var(--lh-prose); }
.photo-input label { margin-bottom: var(--space-2); }
.photo-input .actions { margin-bottom: var(--space-2); }
.photo-preview { display: block; max-width: 100%; max-height: 320px; margin-top: 16px; border-radius: var(--radius-sm); object-fit: contain; }
.auth-grid .primary { width: 100%; }
#forgot-form, #reset-form { grid-column: 1 / -1; width: min(100%, 580px); justify-self: center; }
#email-prompt { margin: 24px 0; border-color: var(--line); background: var(--notice-surface); }
#email-prompt label { max-width: 520px; }
label { display: block; margin-bottom: 20px; font-size: var(--text-md); font-weight: 600; line-height: var(--lh-ui); }
input, textarea, select { display: block; width: 100%; min-width: 0; margin-top: var(--space-2); padding: 11px 13px; border: 1px solid var(--line); border-radius: var(--radius-sm); background: var(--field-surface); color: var(--ink); font: inherit; font-weight: 400; line-height: var(--lh-ui); transition: border-color 120ms, box-shadow 120ms; }
input:hover, textarea:hover, select:hover { border-color: var(--ink-2); }
input:focus, textarea:focus, select:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--soft); }
input::placeholder, textarea::placeholder { color: var(--muted); opacity: 1; }
textarea { resize: vertical; }
.field-hint { display: block; margin-top: var(--space-2); font-weight: 400; line-height: var(--lh-prose); }
label + .field-hint, .form-grid + .field-hint { margin-top: -12px; margin-bottom: 20px; }
.code { font-family: "Cascadia Code", Consolas, Monaco, monospace; font-size: var(--text-sm); line-height: var(--lh-ui); tab-size: 4; }
pre { max-width: 100%; padding: 20px; border: 1px solid var(--line); border-radius: var(--radius-sm); background: var(--paper-2); overflow: auto; max-height: 480px; }
pre.code { color: var(--code-ink); background: var(--code-surface); border-color: var(--code-surface); }
.prose { white-space: pre-wrap; overflow-wrap: anywhere; font: inherit; line-height: var(--lh-prose); background: var(--surface); }
button { min-height: 42px; padding: 9px 16px; border: 1px solid var(--line); border-radius: var(--radius-sm); background: var(--surface); color: var(--ink); font: inherit; font-size: var(--text-md); font-weight: 550; line-height: var(--lh-ui); cursor: pointer; transition: background-color var(--motion-fast), border-color var(--motion-fast), color var(--motion-fast), box-shadow var(--motion-fast), transform var(--motion-fast) var(--motion-ease); }
button:hover:not(:disabled) { background: var(--paper-2); border-color: var(--ink-2); }
button.primary { color: var(--on-accent); background: var(--accent); border-color: var(--accent); }
button.primary:hover:not(:disabled) { background: var(--accent-hover); border-color: var(--accent-hover); }
button:disabled { opacity: .5; cursor: not-allowed; }
[aria-busy="true"] button:disabled:not([data-blocked="1"]) { cursor: wait; }
.actions { display: flex; flex-wrap: wrap; gap: 10px; margin: 20px 0; min-width: 0; max-width: 100%; }
.actions > * { min-width: 0; max-width: 100%; }
.actions button, .danger-zone button { min-width: 0; max-width: 100%; white-space: normal; overflow-wrap: anywhere; }
.page-heading { display: flex; flex-wrap: wrap; align-items: start; justify-content: space-between; gap: var(--space-4) var(--space-6); margin: var(--space-5) 0; }
.page-heading > div { min-width: 0; }
.page-heading h2 { margin: 0 0 var(--space-2); }
.page-heading p { max-width: var(--measure); margin: var(--space-1) 0; line-height: var(--lh-prose); }
.zone-filter { display: inline-flex; align-items: center; gap: var(--space-2); margin: 0; font-size: var(--text-sm); line-height: var(--lh-ui); color: var(--ink-2); }
.zone-filter select { width: auto; }
.list-tools { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-3); }
.list-focus { min-height: 40px; border-color: var(--accent); background: var(--surface); color: var(--accent-hover); font-weight: 650; }
.list-focus::before { content: "B6"; margin-right: var(--space-2); font-size: 11px; }
.list-filter { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-2); margin: var(--space-2) 0 0; padding: 2px var(--space-3); width: fit-content; max-width: 100%; border: 1px solid var(--line); border-radius: var(--radius-pill); background: var(--soft); color: var(--accent-hover); font-size: var(--text-sm); font-weight: 600; }
.list-filter .link-button { margin-left: 0; }
.workspace { display: grid; grid-template-columns: minmax(0, 1fr); gap: var(--space-5); align-items: start; }
#cards { min-width: 0; padding: 0; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); overflow: hidden; }
.record-button { position: relative; display: block; width: 100%; text-align: left; padding: 18px 18px 16px; margin-bottom: 10px; border: 1px solid var(--line); border-radius: var(--radius-sm); background: var(--record-surface); }
.record-button strong, .record-button span, .record-button small { display: block; }
.record-button strong { padding-right: 16px; font-size: 15px; font-weight: 650; overflow-wrap: anywhere; }
.record-button.selected { border-color: var(--accent); background: var(--soft); box-shadow: inset 3px 0 var(--accent); }
.record-button.selected::after { content: "•"; position: absolute; top: 17px; right: 15px; color: var(--accent); }
.record-description { margin: 9px 0 12px; max-height: 4.8em; overflow: hidden; overflow-wrap: anywhere; font-size: 13px; line-height: 1.6; color: var(--ink-2); font-weight: 400; }
.record-button small { font-size: 11px; font-variant-numeric: tabular-nums; font-weight: 400; }
#cards .record-button { padding: calc(var(--space-3) + var(--space-1) / 2) calc(var(--space-4) + var(--space-1) / 2); margin: 0; border: 0; border-bottom: 1px solid var(--line); border-radius: var(--radius-flat); background: transparent; }
#cards .record-button:last-child { border-bottom: 0; }
#cards .record-button strong { padding-right: 0; font-size: var(--text-base); font-weight: 600; }
#cards .record-description { display: -webkit-box; -webkit-box-orient: vertical; -webkit-line-clamp: 2; margin: var(--space-2) 0; max-height: calc(2em * var(--lh-ui)); font-size: var(--text-sm); line-height: var(--lh-ui); color: var(--ink-2); }
#cards .record-button small { font-size: var(--text-meta); }
#cards .record-button.selected { background: var(--soft); box-shadow: inset 3px 0 var(--accent); }
#cards .record-button.selected::after { content: none; }
#cards .record-button:focus-visible { outline-offset: calc(-1 * var(--space-1)); }
#detail { min-height: 470px; padding: var(--space-6); }
#detail p, #detail .prose, .ai-section p, .mistake-text p { max-width: var(--measure); line-height: var(--lh-prose); }
.detail-heading { display: flex; flex-wrap: wrap; align-items: start; justify-content: space-between; gap: var(--space-4); margin-bottom: var(--space-6); padding-bottom: var(--space-4); border-bottom: 1px solid var(--line); }
.detail-heading h2 { flex: 1; min-width: 0; margin: 0; font-size: var(--text-2xl); overflow-wrap: anywhere; }
#detail .language-badge, #detail .review-meta, #detail .danger-hint { line-height: var(--lh-ui); }
.language-badge { margin: 2px 0 0; padding: 4px 10px; border-radius: var(--radius-badge); background: var(--paper-2); color: var(--ink-2); font-family: Consolas, monospace; font-size: 12px; overflow-wrap: anywhere; max-width: 100%; }
.section-label { margin: var(--space-6) 0 var(--space-4); color: var(--ink-2); font-size: var(--text-sm); font-weight: 600; }
.mistake-text { padding: var(--space-4); border-left: 3px solid var(--accent); border-radius: var(--radius-flat) var(--radius-sm) var(--radius-sm) var(--radius-flat); background: var(--soft); }
.mistake-text p { margin: 0 0 var(--space-4); font-size: var(--text-base); line-height: var(--lh-prose); }
.mistake-text button { min-height: 34px; padding: 5px 10px; font-size: 12px; }
.mistake-text form > button + button, .problem-editor form > button + button { margin-left: 8px; }
.review-meta { margin: 12px 0 3px; font-variant-numeric: tabular-nums; font-size: 12px; }
.review-meta + .review-meta { margin-top: 3px; }
details { margin: 18px 0; }
summary { cursor: pointer; font-size: 13px; font-weight: 600; padding: 10px 0; }
summary::marker { color: var(--accent); }
details[open] > summary { margin-bottom: 12px; }
.original-record { margin: var(--space-6) 0; border-bottom: 1px solid var(--line); padding-bottom: var(--space-4); }
.review-section { margin-top: var(--space-6); padding: 0; }
.review-section h3 { margin: 0 0 var(--space-4); }
.review-actions { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: var(--space-2); margin: var(--space-4) 0 0; }
.review-actions button { padding: 13px 5px; font-size: 13px; border-color: var(--line); background: var(--paper-2); }
.review-actions [data-quality="0"] { color: var(--danger); }
.review-actions [data-quality="3"] { color: var(--ink-2); }
.review-actions [data-quality="4"], .review-actions [data-quality="5"] { color: var(--accent-hover); }
.review-actions [data-quality="5"] { border-color: var(--accent); background: var(--soft); }
.review-history { margin: var(--space-6) 0; color: var(--muted); font-size: var(--text-xs); }
.review-history ul { padding-left: 20px; }
.review-history li { margin: 8px 0; overflow-wrap: anywhere; }
.ai-section { margin-top: var(--space-6); padding-top: var(--space-4); border-top: 1px solid var(--line); }
.ai-section > h3 { margin: 0 0 var(--space-4); }
.ai-section p { font-size: var(--text-md); line-height: var(--lh-prose); color: var(--ink-2); }
.ai-section > button { margin: var(--space-4) 0; }
.variant { padding: 10px 20px 18px; border: 1px solid var(--line); border-radius: var(--radius-sm); background: var(--quiet-surface); }
.variant > summary { font-size: 14px; }
.variant > form { margin-top: 22px; }
.variant > .prose { padding: var(--space-4); font-size: var(--text-md); line-height: var(--lh-prose); }
.empty-state { display: flex; flex-direction: column; align-items: center; justify-content: center; min-height: 390px; text-align: center; padding: 28px 16px; }
.empty-state .empty-symbol { display: grid; place-items: center; width: 58px; height: 66px; margin-bottom: 14px; border: 1px solid var(--line); border-radius: var(--radius-book); background: var(--paper-2); color: var(--accent-hover); font: 28px/1 Georgia, serif; box-shadow: 0 8px 20px var(--soft); }
.empty-state h3 { margin: 12px 0 8px; font-size: 19px; }
.empty-state p, #detail .empty-state p { max-width: min(310px, var(--measure)); margin: 0; line-height: var(--lh-prose); }
.empty-list { margin: 0; padding: 24px 20px; border: 1px dashed var(--line); border-radius: var(--radius-sm); line-height: 1.9; }
.danger-zone { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 36px; padding-top: 22px; border-top: 1px dashed var(--danger-line); }
.danger-zone .danger-hint { flex-basis: 100%; margin: 0 0 var(--space-1); color: var(--danger-muted); font-size: var(--text-xs); }
#detail .danger-zone { gap: var(--space-4); margin-top: var(--space-7); padding-top: var(--space-4); border-top: 1px solid var(--line); }
/* The reading-width cap above must not stop the hint from taking its own row. */
#detail .danger-zone .danger-hint { max-width: none; }
button.danger { color: var(--danger); background: transparent; border-color: var(--danger-button-line); font-size: 12px; }
button.danger:hover:not(:disabled) { color: var(--danger-hover); background: var(--danger-soft); border-color: var(--danger-hover-line); }
#new-page, #weakness-page, #achievements-page, #leaderboard-page,
#groups-page, #forum-page, #weekly-recap-page, #plan-page, #admin-page { width: 100%; min-width: 0; }
:where(#achievements-page, #leaderboard-page, #groups-page,
  #forum-page, #weekly-recap-page, #plan-page, #admin-page) p:where(.muted, .field-hint, .multiline) { max-width: var(--measure); line-height: var(--lh-prose); }
@media (min-width: 1024px) {
  .workspace { grid-template-columns: var(--record-list-width) minmax(0, 1fr); }
  #cards { position: sticky; top: var(--space-4); max-height: calc(100vh - var(--space-5) * 2); overflow-y: auto; scrollbar-width: thin; scrollbar-color: var(--line) transparent; }
}

.achievements-note { max-width: var(--measure); color: var(--ink-2); font-size: var(--text-xs); }
.achievements-summary { padding: 22px 26px; border: 1px solid var(--reward-line); border-radius: var(--radius); background: var(--reward-soft); }
.achievements-summary > strong { color: var(--reward-ink); font-size: 21px; font-variant-numeric: tabular-nums; }
.achievements-summary > p { margin: 5px 0 0; color: var(--reward-muted); font-size: 13px; }
.achievements-share { margin-top: 16px; }
.achievements-share-image { display: block; width: min(100%, 432px); height: auto; margin-top: 16px; border: 1px solid var(--soft); border-radius: var(--radius-sm); background: var(--paper); }
#achievements-share-error { color: var(--danger); font-size: 13px; }
#achievements-status:empty { display: none; }
#achievements-status.error { color: var(--danger); }
.achievement-group { margin-top: 32px; }
.achievement-group-heading { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 8px 20px; }
.achievement-group-heading h3 { margin: 0; font-size: 19px; }
.achievement-group-count { color: var(--ink-2); font-size: 12px; font-variant-numeric: tabular-nums; }
.achievement-group-description { margin: 7px 0 16px; color: var(--ink-2); font-size: 13px; }
.achievement-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 240px), 1fr)); gap: 16px; }
.achievement-card { display: flex; flex-direction: column; min-width: 0; padding: 22px; border: 1px solid var(--card-line); border-radius: var(--radius); background: var(--locked-surface); }
.achievement-card.is-unlocked { border-color: var(--reward-card-line); background: var(--reward-card-surface); box-shadow: inset 0 3px var(--reward-accent); }
.achievement-card-top { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.achievement-emblem { display: flex; flex-direction: column; align-items: center; justify-content: center; flex-shrink: 0; width: 65px; height: 65px; border: 1px solid var(--emblem-line); border-radius: var(--radius-round); background: var(--emblem-surface); color: var(--status-ink); }
.achievement-emblem > strong { font-size: 24px; line-height: 1.15; font-variant-numeric: tabular-nums; }
.achievement-emblem > span { margin-top: 3px; font-size: 10px; }
.is-unlocked .achievement-emblem { border-color: var(--reward-emblem-line); background: var(--reward-emblem-surface); color: var(--reward-emblem-ink); }
.achievement-state { color: var(--status-ink); font-size: 12px; font-weight: 650; }
.is-unlocked .achievement-state { color: var(--reward-ink); }
.achievement-card h4 { margin: 18px 0 6px; color: var(--card-heading); font-size: 16px; }
.is-unlocked h4 { color: var(--reward-heading); }
.achievement-description { margin: 0 0 20px; color: var(--card-muted); font-size: 12px; }
.achievement-progress-count { margin: auto 0 7px; color: var(--card-muted); font-size: 11px; font-variant-numeric: tabular-nums; }
.achievement-card progress { display: block; width: 100%; height: 6px; overflow: hidden; border: 0; border-radius: var(--radius-sm); background: var(--card-line); accent-color: var(--progress-fill); }
.achievement-card progress::-webkit-progress-bar { border-radius: var(--radius-sm); background: var(--card-line); }
.achievement-card progress::-webkit-progress-value { border-radius: var(--radius-sm); background: var(--progress-fill); }
.achievement-card progress::-moz-progress-bar { border-radius: var(--radius-sm); background: var(--progress-fill); }
.is-unlocked progress { accent-color: var(--reward-progress); }
.is-unlocked progress::-webkit-progress-value { background: var(--reward-progress); }
.is-unlocked progress::-moz-progress-bar { background: var(--reward-progress); }
.achievement-progress-message { margin: 10px 0 0; color: var(--card-heading); font-size: 12px; line-height: 1.7; }
.is-unlocked .achievement-progress-message { color: var(--reward-ink); }
.weekly-recap-note { max-width: var(--measure); color: var(--ink-2); font-size: var(--text-xs); }
.weekly-recap-summary { padding: 22px 26px; border: 1px solid var(--success-line); border-radius: var(--radius); background: var(--success-soft); }
.weekly-recap-summary > strong { color: var(--success-ink); font-size: 21px; font-variant-numeric: tabular-nums; }
.weekly-recap-summary > p { margin: 5px 0 0; color: var(--success-muted); font-size: 13px; }
#weekly-recap-status:empty { display: none; }
#weekly-recap-status.error { color: var(--danger); }
.weekly-recap-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr)); gap: 16px; margin-top: 24px; }
.weekly-recap-cards:empty { display: none; }
.weekly-recap-card { display: flex; flex-direction: column; min-width: 0; padding: 22px; border: 1px solid var(--card-line); border-radius: var(--radius); background: var(--summary-surface); }
.weekly-recap-card h3 { margin: 0; color: var(--card-heading); font-size: 16px; }
.weekly-recap-value { display: flex; align-items: baseline; flex-wrap: wrap; gap: 8px; margin: 14px 0 8px; color: var(--success-ink); font-variant-numeric: tabular-nums; }
.weekly-recap-value > strong { font-size: 36px; line-height: 1.2; }
.weekly-recap-value > span { font-size: 13px; }
.weekly-recap-description { margin: 0 0 18px; color: var(--card-muted); font-size: 12px; }
.weekly-recap-comparison { margin: auto 0 0; padding-top: 14px; border-top: 1px solid var(--summary-line); color: var(--success-muted); font-size: 13px; font-variant-numeric: tabular-nums; }
#leaderboard-page > .panel > h3 { margin-top: 0; }
.leaderboard-personal { background: var(--soft); }
.leaderboard-streak { margin: 8px 0; color: var(--accent-hover); font-size: 36px; font-weight: 700; font-variant-numeric: tabular-nums; }
.leaderboard-my-rank { margin-bottom: 0; font-variant-numeric: tabular-nums; }
.leaderboard-list { margin-top: 24px; }
#leaderboard-status:empty { display: none; }
.leaderboard-table { width: 100%; margin-top: 18px; border-collapse: collapse; text-align: left; font-variant-numeric: tabular-nums; }
.leaderboard-table th, .leaderboard-table td { padding: 14px 10px; border-bottom: 1px solid var(--line); overflow-wrap: anywhere; }
.leaderboard-table th { color: var(--muted); font-size: 12px; font-weight: 600; }
.leaderboard-table th:last-child, .leaderboard-days { text-align: right; }
.leaderboard-rank { color: var(--accent); font-weight: 650; }
.leaderboard-table tbody tr:last-child td { border-bottom: 0; }
.forum-list-heading { align-items: baseline; }
.forum-list-heading h3 { margin: 0; }
#forum-search-form { margin-bottom: 18px; }
#forum-search-form label { margin-bottom: 8px; }
.forum-search-controls { display: flex; align-items: center; gap: 10px; }
.forum-search-controls input { flex: 1; margin-top: 0; }
.forum-search-controls button { flex-shrink: 0; }
#forum-posts .record-button small { margin-top: 8px; }
#forum-detail .actions { margin: 20px 0 0; }
.admin-dashboard-heading { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.admin-dashboard-heading h3 { margin: 0; }
.admin-dashboard-note { margin: 8px 0 14px; font-size: 12px; }
#admin-dashboard-status:empty, #admin-dashboard-updated:empty { display: none; }
#admin-dashboard-status.error { color: var(--danger); }
.admin-dashboard-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(250px, 100%), 1fr)); gap: 16px; }
.admin-stat-card { padding: 22px; }
.admin-stat-card h4, .admin-zone-panel h4 { margin: 0; }
.admin-stat-value { margin: 10px 0 14px; color: var(--accent); font-size: 34px; font-weight: 700; font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }
.admin-stat-value small { margin-left: 6px; color: var(--muted); font-size: 13px; font-weight: 400; }
.admin-stat-facts { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 7px 14px; margin: 0; font-size: 13px; }
.admin-stat-facts dt { color: var(--muted); }
.admin-stat-facts dd { margin: 0; text-align: right; font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }
.admin-stat-card .admin-dashboard-note { margin-bottom: 0; }
.admin-zone-panel { margin-top: 16px; padding: 22px; }
.admin-zone-list { margin: 0; padding: 0; list-style: none; }
.admin-zone-list li { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; padding: 10px 0; border-bottom: 1px solid var(--line); overflow-wrap: anywhere; }
.admin-zone-list li:last-child { border-bottom: 0; padding-bottom: 0; }
.admin-zone-list strong { flex-shrink: 0; font-variant-numeric: tabular-nums; }
.admin-reports-heading { margin-top: 36px; padding-top: 26px; border-top: 1px solid var(--line); }
#admin-reports { display: flex; flex-direction: column; gap: 18px; }
.admin-report h3 { margin-top: 0; }
.admin-report pre { margin: 12px 0; }
.admin-report .actions { margin-bottom: 0; }
#plan-page > .panel > h3, .plan-card > h3, .plan-card > h4 { margin-top: 0; }
#plan-trial-note { margin: 18px 0; }
#plan-catalog, #plan-order, #plan-orders { margin-top: 24px; }
#plan-list { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(240px, 100%), 1fr)); gap: 18px; }
.plan-card { display: flex; flex-direction: column; overflow-wrap: anywhere; }
.plan-card .actions { margin-top: auto; margin-bottom: 0; padding-top: 16px; }
.plan-price { margin: 8px 0 14px; color: var(--accent); font-size: 28px; font-weight: 700; font-variant-numeric: tabular-nums; }
.plan-facts { display: grid; grid-template-columns: max-content minmax(0, 1fr); gap: 8px 20px; margin: 16px 0 0; }
.plan-facts dt { color: var(--muted); }
.plan-facts dd { min-width: 0; margin: 0; overflow-wrap: anywhere; font-variant-numeric: tabular-nums; }
#plan-order-details, #plan-order-status { overflow-wrap: anywhere; }
#plan-payment { margin-top: 22px; }
.plan-payment-link { display: inline-block; max-width: 100%; overflow-wrap: anywhere; }
pre.plan-payment-text.code { padding: 16px; color: var(--ink); background: var(--soft); border-color: var(--line); white-space: pre-wrap; overflow-wrap: anywhere; }
#plan-order > .actions { margin-bottom: 0; }
.plan-order-row { margin-top: 22px; padding-top: 20px; border-top: 1px solid var(--line); }
.plan-order-heading { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 8px 20px; }
.plan-order-heading h4 { margin: 0; overflow-wrap: anywhere; }
.plan-order-amount { color: var(--accent); font-weight: 650; font-variant-numeric: tabular-nums; }
.plan-order-row .actions { margin: 16px 0 0; }
.mistake-row { margin: 14px 0; padding: 18px; border: 1px solid var(--line); border-radius: var(--radius-sm); background: var(--paper-2); }
.mistake-row label { margin-bottom: 10px; }
.mistake-row > button { padding: 5px 10px; min-height: 34px; color: var(--muted); font-size: 12px; }
#notice:empty { display: none; }
#notice:not(:empty) { position: sticky; top: 12px; z-index: 5; display: flex; align-items: flex-start; gap: 10px; margin: 20px 0; padding: 13px 16px; border: 1px solid var(--line); border-radius: var(--radius-sm); color: var(--accent-hover); background: var(--notice-surface); box-shadow: 0 4px 18px rgba(var(--shadow-rgb),.03); font-size: 13px; overflow-wrap: anywhere; }
#notice::before { content: "i"; display: grid; place-items: center; flex: 0 0 18px; height: 18px; margin-top: 2px; border: 1px solid currentColor; border-radius: var(--radius-round); font: 600 12px/1 Georgia, serif; }
#notice.error { background: var(--error-surface); border-color: var(--error-line); color: var(--error-ink); }
#notice.error::before { content: "!"; }
#notice.pending:not(.error)::before { content: ""; border: 2px solid var(--line); border-top-color: var(--accent); animation: pending-spin 1s linear infinite; }
@keyframes pending-spin { to { transform: rotate(360deg); } }

.home-quota { min-width: 0; padding-left: 20px; border-left: 1px solid var(--line); }
.home-quota-heading { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 4px 8px; font-size: 11px; }
.home-quota-heading label { margin: 0; color: var(--ink); font-size: 12px; }
.home-quota-heading span { color: var(--ink-2); font-variant-numeric: tabular-nums; }
.home-quota progress { display: block; width: 100%; height: 4px; margin: 6px 0 0; overflow: hidden; border: 0; border-radius: var(--radius-chip); background: var(--quota-track); accent-color: var(--ink); }
.home-quota progress::-webkit-progress-bar { height: 4px; border-radius: var(--radius-chip); background: var(--quota-track); }
.home-quota progress::-webkit-progress-value { height: 4px; border-radius: var(--radius-chip); background: var(--ink); }
.home-quota progress::-moz-progress-bar { height: 4px; border-radius: var(--radius-chip); background: var(--ink); }
.home-quota-hint { display: none; color: var(--ink-2); font-size: 10px; }

/* Only the first successful home visit draws these two marks. */
@media (prefers-reduced-motion: no-preference) {
  .home-anim .home-ink-char { display: inline-block; opacity: 0; filter: blur(8px); transform: translateY(6px); animation: home-ink-reveal .7s ease-out var(--ink-delay, 0ms) both; }
  .home-anim .has-due .review-pen .pen { stroke-dasharray: 1; stroke-dashoffset: 1; animation: home-pen-draw .8s ease-out .5s both; }
}
@keyframes home-ink-reveal { to { opacity: 1; filter: blur(0); transform: translateY(0); } }
@keyframes home-pen-draw { to { stroke-dashoffset: 0; } }

#seal-layer { position: fixed; inset: 0; pointer-events: none; z-index: 60; overflow: hidden; }
.seal-stamp {
  --seal-height: 78px;
  --seal-scale: 1;
  position: absolute;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: var(--seal-width, 58px);
  height: var(--seal-height);
  padding: 6px;
  border: 3px solid currentColor;
  border-radius: var(--radius-xs);
  color: var(--accent);
  font: 600 26px/1 var(--kai);
  writing-mode: var(--seal-writing-mode, vertical-rl);
  white-space: nowrap;
  letter-spacing: .15em;
  mix-blend-mode: multiply;
  transform: translate(-50%, -50%) scale(var(--seal-scale)) rotate(var(--rot, -8deg));
}
.seal-stamp--gamboge { color: var(--seal-gamboge); }
.seal-stamp--animated { animation: seal-land .45s cubic-bezier(.2,.9,.3,1) both; }
.seal-stamp--fading { animation: seal-fade .35s ease-out both; }
@keyframes seal-land {
  from { opacity: 0; transform: translate(-50%, -50%) scale(calc(var(--seal-scale) * 2.3)) rotate(-18deg); }
  65% { opacity: 1; transform: translate(-50%, -50%) scale(calc(var(--seal-scale) * .92)) rotate(var(--rot, -8deg)); }
  to { opacity: 1; transform: translate(-50%, -50%) scale(var(--seal-scale)) rotate(var(--rot, -8deg)); }
}
@keyframes seal-fade { from { opacity: 1; } to { opacity: 0; } }
@media (max-width: 560px) { .seal-stamp { --seal-scale: .8; } }

/* 轻反馈共用于各分区；只对真正可交互的元素做位移。 */
a, summary, .avatar-upload-label { transition: color var(--motion-fast), text-decoration-color var(--motion-fast); }
.plan-card { transition: border-color var(--motion-fast), box-shadow var(--motion-fast); }
.plan-card:focus-within { border-color: var(--ink-2); box-shadow: 0 5px 18px rgba(var(--shadow-rgb),.035); }
.leaderboard-table tbody tr { transition: background-color var(--motion-fast); }
.record-button:focus-visible { box-shadow: 0 4px 12px rgba(var(--shadow-rgb),.04); }
.record-button.selected:focus-visible { box-shadow: inset 3px 0 var(--accent), 0 4px 12px rgba(var(--shadow-rgb),.04); }

@media (hover: hover) and (pointer: fine) {
  summary:hover, .avatar-upload-label:hover { color: var(--accent-hover); }
  .plan-card:hover { border-color: var(--ink-2); box-shadow: 0 5px 18px rgba(var(--shadow-rgb),.035); }
  .leaderboard-table tbody tr:hover { background: var(--soft); }
  .record-button:hover:not(:disabled) { box-shadow: 0 4px 12px rgba(var(--shadow-rgb),.04); }
  .record-button.selected:hover:not(:disabled) { box-shadow: inset 3px 0 var(--accent), 0 4px 12px rgba(var(--shadow-rgb),.04); }
  #cards .record-button:hover:not(:disabled) { background: var(--paper-2); box-shadow: none; }
  #cards .record-button.selected:hover:not(:disabled) { background: var(--soft); box-shadow: inset 3px 0 var(--accent); }
  button.primary:hover:not(:disabled), .review-actions button:hover:not(:disabled) { box-shadow: 0 4px 12px var(--soft); }
}

/* 不让触屏产生悬停位移，也不让 reduced-motion 用户看到瞬间跳动。 */
@media (hover: hover) and (pointer: fine) and (prefers-reduced-motion: no-preference) {
  button:where(:not(.link-button, .intro-trial, #remove-avatar-btn, #cards .record-button)):hover:not(:disabled) { transform: translateY(-1px); }
  button:where(:not(.link-button, .intro-trial, #remove-avatar-btn, #cards .record-button)):active:not(:disabled) { transform: translateY(0); }
}

@media (prefers-reduced-motion: no-preference) {
  /* hidden 切换自然触发进入；不延迟显示，不移动正文或改变布局。 */
  #app > section:not([hidden]), #auth:not([hidden]),
  #forum-page > section:not([hidden]), #plan-order:not([hidden]) {
    animation: content-arrive var(--motion-enter) var(--motion-ease);
  }
  /* 详情、排行与订单由原有渲染逻辑替换，淡入新内容无需增加事件监听。 */
  .record-button, .plan-card, .plan-order-row, .admin-report,
  #detail > *, .leaderboard-table tbody, details[open]:not(.account-menu) > :not(summary) {
    animation: content-arrive 180ms var(--motion-ease);
  }
}
@keyframes content-arrive { from { opacity: .75; } to { opacity: 1; } }

@media (max-width: 1000px) {
  .container { padding-right: 24px; padding-left: 24px; }
  .review-actions { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .home-quota { padding-left: 18px; }
}
@media (max-width: 780px) {
  .account-menu-panel { right: auto; left: 0; }
  .container { padding: 0 18px 40px; }
  .header { align-items: flex-start; flex-wrap: wrap; gap: 14px; padding: 20px 0; }
  .brand-copy h1, .header h1 { font-size: 21px; }
  .header .brand-copy > .muted { max-width: 240px; }
  .user-meta { width: 100%; justify-content: space-between; text-align: left; }
  .user-meta:has(#logout[hidden]) { display: none; }
  .auth-grid, .workspace { grid-template-columns: minmax(0, 1fr); }
  .auth-grid { gap: 18px; }
  .panel { padding: 22px; }
  #cards:has(.record-button) { max-height: 310px; overflow-y: auto; padding: 0; scrollbar-width: thin; scrollbar-color: var(--line) transparent; }
  #detail { min-height: 340px; }
  .empty-state { min-height: 290px; padding: 18px 0; }
  .review-actions { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .review-actions button { min-height: 48px; }
  .form-grid { grid-template-columns: minmax(0, 1fr); }
  input, textarea, select { font-size: 16px; }
  textarea.code { font-size: var(--text-md); }
  .variant { padding: 8px 14px 14px; }
  .variant > .prose { padding: 14px; }
  .danger-zone button { flex-grow: 1; }
  .leaderboard-table th, .leaderboard-table td { padding: 12px 6px; }
  #notice:not(:empty) { top: 8px; }
}
@media (max-width: 380px) {
  .container { padding-right: 12px; padding-left: 12px; }
  .panel { padding: 18px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}

@supports (background: color-mix(in srgb, white 50%, transparent)) {
  html[data-cursor-fx="ripple"] {
    --fx-panel-opacity: 88%;
  }

  /* Only outer panels reveal the landscape; nested cards and controls stay opaque.
     The sticky #notice floats over scrolling content, so it must stay opaque too. */
  html[data-cursor-fx="ripple"] :is(
    .panel:not(.panel .panel), #cards, #detail, .weekly-recap-card, .weekly-recap-summary,
    .achievement-card, .achievements-summary
  ) {
    background: color-mix(in srgb, var(--fx-panel-color, var(--surface)) var(--fx-panel-opacity), transparent);
  }
  html[data-cursor-fx="ripple"] #email-prompt { --fx-panel-color: var(--notice-surface); }
  html[data-cursor-fx="ripple"] .leaderboard-personal { --fx-panel-color: var(--soft); }
  html[data-cursor-fx="ripple"] .weekly-recap-card { --fx-panel-color: var(--summary-surface); }
  html[data-cursor-fx="ripple"] .weekly-recap-summary { --fx-panel-color: var(--success-soft); }
  html[data-cursor-fx="ripple"] .achievements-summary { --fx-panel-color: var(--reward-soft); }
  html[data-cursor-fx="ripple"] .achievement-card { --fx-panel-color: var(--locked-surface); }
  html[data-cursor-fx="ripple"] .achievement-card.is-unlocked { --fx-panel-color: var(--reward-card-surface); }

  @media (hover: none), (pointer: coarse) {
    html[data-cursor-fx="ripple"] { --fx-panel-opacity: 92%; }
  }
  @media (hover: hover) and (pointer: fine) {
    html[data-cursor-fx="ripple"] :is(
      .panel:not(.panel .panel), #cards, #detail, .weekly-recap-card, .weekly-recap-summary,
      .achievement-card, .achievements-summary
    ) {
      -webkit-backdrop-filter: blur(8px);
      backdrop-filter: blur(8px);
    }
  }
}