:root {
  --qy-page: #d6d2c6;
  --qy-main: #e2ded3;
  --qy-surface: #ebe7dc;
  --qy-surface-2: #dcd8cc;
  --qy-ink: #25352d;
  --qy-muted: #657069;
  --qy-line: rgba(58, 72, 64, .18);
  --qy-pine: #354e40;
  --qy-pine-deep: #293d33;
  --qy-pine-soft: #6e8372;
  --qy-ochre: #9a7749;
  --qy-light: #f1eee5;
  --qy-shell: 1180px;
  --qy-sidebar: 278px;
  --han-color-bg: var(--qy-page);
  --han-color-bg-surface: var(--qy-surface);
  --han-color-bg-elevated: var(--qy-surface-2);
  --han-color-text-primary: var(--qy-ink);
  --han-color-text-secondary: var(--qy-muted);
  --han-color-text-tertiary: #7c847e;
  --han-color-border: #b8b5aa;
  --han-color-accent-text: var(--qy-pine);
  --han-color-accent-control: var(--qy-pine);
  --han-color-on-accent: #f7f5ee;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--qy-page); }
body {
  min-width: 320px;
  margin: 0;
  color: var(--qy-ink);
  background: var(--qy-page);
  font-family: "Microsoft YaHei UI", "Microsoft YaHei", "PingFang SC", sans-serif;
  line-height: 1.75;
}
button, input { font: inherit; }
button { color: inherit; }
a { color: inherit; }
button:focus-visible, a:focus-visible, summary:focus-visible { outline: 2px solid #6f7f70; outline-offset: 3px; }
section, details { scroll-margin-top: 24px; }

.site-shell { display: grid; grid-template-columns: var(--qy-sidebar) minmax(0, 1fr); min-height: 100vh; }
.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  color: #eef0e8;
  background:
    radial-gradient(circle at 15% 8%, rgba(255,255,255,.08), transparent 25%),
    linear-gradient(180deg, #344b3e 0%, #2b4035 100%);
  border-right: 1px solid rgba(0,0,0,.1);
}
.sidebar-inner { height: 100%; display: flex; flex-direction: column; padding: 34px 28px 26px; overflow-y: auto; }
.brand { display: flex; align-items: center; gap: 13px; text-decoration: none; }
.brand-mark { display: grid; width: 42px; aspect-ratio: 1; place-items: center; border: 1px solid rgba(255,255,255,.45); font-size: 21px; }
.brand-copy { display: flex; flex-direction: column; line-height: 1.2; }
.brand-copy strong { font-size: 24px; letter-spacing: .18em; font-weight: 600; }
.brand-copy small { margin-top: 5px; color: rgba(255,255,255,.58); font-size: 10px; letter-spacing: .26em; }
.sidebar-intro { margin: 30px 0 28px; color: rgba(245,246,241,.67); font-size: 13px; line-height: 1.9; }
.side-nav { display: grid; border-top: 1px solid rgba(255,255,255,.14); }
.side-nav a { display: grid; grid-template-columns: 35px 1fr; align-items: center; min-height: 50px; border-bottom: 1px solid rgba(255,255,255,.12); color: rgba(255,255,255,.82); font-size: 14px; text-decoration: none; transition: .18s; }
.side-nav a span { color: rgba(255,255,255,.36); font-family: Georgia, serif; font-size: 10px; }
.side-nav a:hover { color: #fff; padding-left: 4px; }
.side-divider { height: 1px; margin: 28px 0; background: rgba(255,255,255,.13); }
.side-today { padding: 0 2px; }
.side-kicker { margin: 0 0 8px; color: rgba(255,255,255,.44); font-size: 10px; letter-spacing: .18em; }
.side-today h2 { margin: 0; color: #fff; font-size: 21px; font-weight: 600; line-height: 1.35; }
.side-today > p:not(.side-kicker) { margin: 5px 0 15px; color: rgba(255,255,255,.6); font-size: 12px; }
.side-random { min-height: 38px; padding: 0 14px; border: 1px solid rgba(255,255,255,.35); background: transparent; color: #fff; cursor: pointer; transition: .18s; }
.side-random:hover { background: rgba(255,255,255,.08); }
.side-footer { margin-top: auto; padding-top: 30px; color: rgba(255,255,255,.55); }
.side-footer p { margin: 0 0 4px; font-size: 12px; }
.side-footer small { font-size: 10px; }

.main-panel { min-width: 0; background: var(--qy-main); }
.section-pad { padding: 78px clamp(32px, 5.5vw, 82px); }
.hero { min-height: 590px; display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(330px, .85fr); gap: clamp(40px, 6vw, 92px); align-items: center; border-bottom: 1px solid var(--qy-line); background:
  linear-gradient(180deg, rgba(255,255,255,.13), transparent 62%),
  radial-gradient(circle at 85% 18%, rgba(84,106,90,.11), transparent 31%),
  var(--qy-main);
}
.eyebrow { margin: 0; color: var(--qy-ochre); font-size: 11px; font-weight: 600; letter-spacing: .18em; text-transform: uppercase; }
.hero h1 { max-width: 720px; margin: 20px 0 24px; color: #263c32; font-size: clamp(46px, 5.5vw, 76px); font-weight: 600; letter-spacing: -.045em; line-height: 1.12; text-wrap: balance; }
.hero-lead { max-width: 620px; margin: 0; color: var(--qy-muted); font-size: 18px; line-height: 1.95; }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 18px; margin-top: 32px; }
.primary-action { display: inline-flex; min-height: 50px; align-items: center; gap: 28px; padding: 0 20px; background: var(--qy-pine); color: #fff; text-decoration: none; font-size: 14px; font-weight: 600; letter-spacing: .03em; transition: .18s; }
.primary-action:hover { background: var(--qy-pine-deep); transform: translateY(-1px); }
.text-action { padding: 9px 0; border: 0; border-bottom: 1px solid #7b837d; background: transparent; color: #405349; cursor: pointer; font-size: 14px; }
.text-action:hover { color: #223c30; border-color: #223c30; }
.hero-result { min-height: 28px; margin: 18px 0 0; color: #765b35; font-size: 14px; }
.hero-board { border: 1px solid var(--qy-line); background: rgba(237,233,223,.7); box-shadow: 0 18px 50px rgba(50,60,54,.08); }
.hero-board-head { display: flex; align-items: flex-end; justify-content: space-between; padding: 24px 24px 18px; border-bottom: 1px solid var(--qy-line); }
.hero-board-head span { color: var(--qy-muted); font-size: 12px; letter-spacing: .12em; }
.hero-board-head strong { color: var(--qy-pine); font-family: Georgia, serif; font-size: 52px; line-height: .9; font-weight: 400; }
.hero-board-list { display: grid; }
.hero-board-list button { display: grid; grid-template-columns: 34px minmax(0,1fr) auto; align-items: center; min-height: 58px; padding: 0 20px; border: 0; border-bottom: 1px solid var(--qy-line); background: transparent; cursor: pointer; text-align: left; transition: .18s; }
.hero-board-list button:last-child { border-bottom: 0; }
.hero-board-list button:hover { background: rgba(255,255,255,.32); padding-left: 24px; }
.hero-board-list span { color: #899087; font-family: Georgia, serif; font-size: 10px; }
.hero-board-list b { color: #32443a; font-size: 14px; font-weight: 600; }
.hero-board-list small { color: #7f796b; font-size: 11px; }

.notice-strip { display: grid; grid-template-columns: 74px 1fr; gap: 24px; align-items: center; padding: 24px clamp(32px, 5.5vw, 82px); color: #e9ede7; background: var(--qy-pine); }
.notice-strip-mark { display: grid; width: 52px; aspect-ratio: 1; place-items: center; border: 1px solid rgba(255,255,255,.36); font-size: 20px; }
.notice-strip strong { display: block; font-size: 16px; font-weight: 600; }
.notice-strip p { margin: 2px 0 0; color: rgba(255,255,255,.66); font-size: 13px; }

.section-heading { display: grid; grid-template-columns: minmax(0, 1fr) minmax(280px, 410px); gap: 40px; align-items: end; max-width: var(--qy-shell); margin: 0 auto 38px; }
.section-heading h2 { margin: 8px 0 0; color: #293d33; font-size: clamp(30px, 3.2vw, 45px); font-weight: 600; letter-spacing: -.03em; }
.section-heading > p { margin: 0; color: var(--qy-muted); font-size: 14px; line-height: 1.9; }
.compact-heading { grid-template-columns: 1fr; }

.catalog { background: #d9d5ca; border-bottom: 1px solid var(--qy-line); }
.catalog-grid { max-width: var(--qy-shell); margin: auto; display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid var(--qy-line); }
.catalog-item { position: relative; display: grid; grid-template-columns: 42px minmax(0,1fr) auto 22px; gap: 16px; align-items: center; min-height: 118px; padding: 22px 24px; border: 0; border-right: 1px solid var(--qy-line); border-bottom: 1px solid var(--qy-line); background: transparent; cursor: pointer; text-align: left; transition: .18s; }
.catalog-item:nth-child(even) { border-right: 0; }
.catalog-item:hover { background: rgba(255,255,255,.28); }
.catalog-no { color: #878d85; font-family: Georgia, serif; font-size: 11px; }
.catalog-item h3 { margin: 0 0 4px; color: #304339; font-size: 17px; font-weight: 600; }
.catalog-item p { margin: 0; color: #707a73; font-size: 12px; }
.catalog-tag { padding: 2px 8px; border: 1px solid #8b958b; color: #596a5f; font-size: 10px; }
.catalog-arrow { color: #4e6759; font-size: 16px; }

.practice { background: var(--qy-main); }
.practice-heading { margin-bottom: 22px; }
.practice-list { max-width: var(--qy-shell); margin: auto; border-top: 1px solid var(--qy-line); }
.practice-card { border-bottom: 1px solid var(--qy-line); background: transparent; }
.practice-card summary { display: grid; grid-template-columns: 42px 48px minmax(220px,.9fr) minmax(260px,1.1fr) auto; gap: 18px; align-items: center; min-height: 104px; padding: 16px 6px; list-style: none; cursor: pointer; transition: .18s; }
.practice-card summary::-webkit-details-marker { display: none; }
.practice-card summary:hover { background: rgba(255,255,255,.22); padding-left: 12px; padding-right: 12px; }
.practice-index { color: #838a84; font-family: Georgia, serif; font-size: 11px; }
.practice-seal { display: grid; width: 40px; aspect-ratio: 1; place-items: center; color: #fff; font-size: 16px; }
.seal-green { background: #4b6755; }
.seal-ochre { background: #806d48; }
.seal-slate { background: #586b64; }
.seal-moss { background: #62725c; }
.seal-gold { background: #816d45; }
.seal-earth { background: #656356; }
.practice-title { display: flex; flex-direction: column; min-width: 0; }
.practice-title b { color: #2a4135; font-size: 18px; font-weight: 600; }
.practice-title small { margin-top: 3px; color: #7e847f; font-size: 11px; }
.practice-desc { color: #657069; font-size: 13px; }
.practice-open { color: #55675d; font-size: 12px; white-space: nowrap; }
.practice-open i { display: inline-block; margin-left: 8px; font-style: normal; font-size: 17px; transition: transform .18s; }
.practice-card[open] .practice-open i { transform: rotate(45deg); }
.practice-card[open] summary { background: rgba(255,255,255,.2); }
.practice-body { padding: 42px 4px 56px; }
.video-head { display: grid; grid-template-columns: minmax(0,1fr) minmax(260px,380px); gap: 35px; align-items: end; max-width: 980px; margin: 0 auto 20px; }
.video-head span { color: var(--qy-ochre); font-size: 10px; letter-spacing: .16em; }
.video-head h3 { margin: 5px 0 0; color: #2b4136; font-size: 27px; font-weight: 600; }
.video-head p { margin: 0; color: var(--qy-muted); font-size: 13px; }
.video-box { max-width: 980px; margin: auto; overflow: hidden; background: #171a18; box-shadow: 0 18px 48px rgba(49,58,53,.12); }
.practice-player { display: block; width: 100%; aspect-ratio: 16 / 9; border: 0; background: #171a18; }
.player-bar { display: flex; justify-content: space-between; gap: 18px; align-items: center; max-width: 980px; margin: 12px auto 0; }
.player-status { color: #7b837e; font-size: 11px; }
.player-status.loading { color: #8d6c3d; }
.player-bar > div { display: flex; gap: 8px; }
.reload-button, .source-button { display: inline-flex; min-height: 36px; align-items: center; justify-content: center; padding: 0 13px; border: 1px solid #68796d; background: transparent; color: #40554a; cursor: pointer; text-decoration: none; font-size: 11px; }
.reload-button { border-color: var(--qy-pine); background: var(--qy-pine); color: #fff; }
.practice-notes { display: grid; grid-template-columns: 1fr 1fr; max-width: 980px; margin: 34px auto 0; border-top: 1px solid var(--qy-line); }
.practice-notes > div { padding: 24px 32px 4px 0; }
.practice-notes > div + div { padding-left: 32px; border-left: 1px solid var(--qy-line); }
.practice-notes h4 { margin: 0 0 11px; color: #334b3d; font-size: 15px; }
.practice-notes p, .practice-notes li { color: #667169; font-size: 13px; line-height: 1.9; }
.practice-notes ol { margin: 0; padding-left: 21px; columns: 2; column-gap: 28px; }
.traditional-note { max-width: 980px; margin: 25px auto 0; padding: 15px 18px; border-left: 3px solid #8f7143; background: rgba(154,119,73,.08); }
.traditional-note strong { display: block; margin-bottom: 3px; color: #665235; font-size: 12px; }
.traditional-note p { margin: 0; color: #6d6455; font-size: 12px; line-height: 1.8; }

.today { background: #d7d3c8; border-top: 1px solid var(--qy-line); }
.today-grid { display: grid; grid-template-columns: repeat(3,1fr); max-width: 980px; margin: auto; border-top: 1px solid var(--qy-line); border-bottom: 1px solid var(--qy-line); }
.time-option { min-height: 190px; padding: 28px; border: 0; border-right: 1px solid var(--qy-line); background: transparent; text-align: left; cursor: pointer; transition: .18s; }
.time-option:last-child { border-right: 0; }
.time-option:hover, .time-option.active { background: rgba(255,255,255,.3); }
.time-option span { display: block; color: var(--qy-pine); font-family: Georgia, serif; font-size: 48px; line-height: 1; }
.time-option b { display: block; margin: 8px 0 13px; color: #886a3d; font-size: 11px; letter-spacing: .15em; }
.time-option p { margin: 0; color: #626d66; font-size: 13px; line-height: 1.85; }
.plan-output { max-width: 980px; margin: 16px auto 0; min-height: 44px; color: #59655e; font-size: 13px; }
.checkin-panel { max-width: 980px; margin: 55px auto 0; padding: 28px 0; border-top: 1px solid var(--qy-line); border-bottom: 1px solid var(--qy-line); display: flex; justify-content: space-between; align-items: center; gap: 40px; }
.checkin-panel h3 { margin: 7px 0 5px; color: #2c4237; font-size: 22px; }
.checkin-panel > div > p:not(.eyebrow) { margin: 0; color: #6b756e; font-size: 12px; }
.checkin-action { min-width: 210px; text-align: center; }
#checkInBtn { width: 100%; min-height: 44px; border: 0; background: var(--qy-pine); color: #fff; cursor: pointer; font-weight: 600; font-size: 13px; }
#checkInBtn.done { background: #748379; cursor: default; }
.checkin-action p { margin: 8px 0 0 !important; }

.notes { background: var(--qy-main); }
.notes-grid { display: grid; grid-template-columns: repeat(3,1fr); max-width: 980px; margin: auto; border-top: 1px solid var(--qy-line); border-bottom: 1px solid var(--qy-line); }
.notes-grid article { padding: 26px 28px; border-right: 1px solid var(--qy-line); }
.notes-grid article:last-child { border-right: 0; }
.notes-grid span { color: var(--qy-ochre); font-family: Georgia, serif; font-size: 11px; }
.notes-grid h3 { margin: 12px 0 6px; color: #30463a; font-size: 17px; }
.notes-grid p { margin: 0; color: #68736c; font-size: 13px; }
.disclaimer { max-width: 980px; margin: 38px auto 0; padding: 22px 24px; background: #d8d4c9; border-left: 3px solid #8e7147; }
.disclaimer strong { display: block; margin-bottom: 5px; color: #5f5038; font-size: 12px; }
.disclaimer p { margin: 0; color: #655f54; font-size: 12px; line-height: 1.9; }

.main-footer { display: flex; justify-content: space-between; gap: 50px; align-items: flex-end; padding: 35px clamp(32px, 5.5vw, 82px); color: #dce1dc; background: #2d4136; }
.main-footer > div { display: flex; flex-direction: column; }
.main-footer strong { font-size: 20px; letter-spacing: .12em; }
.main-footer span { margin-top: 4px; color: rgba(255,255,255,.55); font-size: 10px; }
.main-footer p { max-width: 560px; margin: 0; color: rgba(255,255,255,.45); font-size: 9px; line-height: 1.7; text-align: right; }

@media (max-width: 1080px) {
  :root { --qy-sidebar: 238px; }
  .hero { grid-template-columns: 1fr; min-height: auto; }
  .hero-board { max-width: 650px; }
  .catalog-grid { grid-template-columns: 1fr; }
  .catalog-item { border-right: 0; }
  .practice-card summary { grid-template-columns: 38px 44px minmax(190px,.9fr) minmax(180px,1fr) auto; gap: 12px; }
  .practice-desc { font-size: 12px; }
}

@media (max-width: 820px) {
  .site-shell { display: block; }
  .sidebar { position: relative; height: auto; }
  .sidebar-inner { padding: 22px 24px; overflow: visible; }
  .brand { width: max-content; }
  .sidebar-intro, .side-divider, .side-today, .side-footer { display: none; }
  .side-nav { display: flex; margin-top: 18px; overflow-x: auto; border-top: 1px solid rgba(255,255,255,.14); border-bottom: 1px solid rgba(255,255,255,.14); scrollbar-width: none; }
  .side-nav::-webkit-scrollbar { display: none; }
  .side-nav a { flex: 0 0 auto; min-height: 42px; padding: 0 17px; border: 0; border-right: 1px solid rgba(255,255,255,.1); font-size: 12px; }
  .side-nav a span { display: none; }
  .hero { padding-top: 62px; }
  .section-heading { grid-template-columns: 1fr; gap: 10px; }
  .practice-card summary { grid-template-columns: 36px 42px 1fr auto; }
  .practice-desc { display: none; }
  .practice-notes ol { columns: 1; }
}

@media (max-width: 620px) {
  .section-pad { padding: 58px 22px; }
  .hero h1 { font-size: 42px; }
  .hero-lead { font-size: 16px; }
  .hero-board-list button { min-height: 54px; }
  .notice-strip { grid-template-columns: 48px 1fr; padding: 20px 22px; }
  .notice-strip-mark { width: 42px; }
  .catalog-item { grid-template-columns: 34px 1fr 20px; padding: 18px 8px; }
  .catalog-tag { display: none; }
  .practice-card summary { grid-template-columns: 32px 39px 1fr auto; padding: 13px 0; }
  .practice-title b { font-size: 16px; }
  .practice-title small { font-size: 10px; }
  .practice-open { font-size: 0; }
  .practice-open i { font-size: 17px; }
  .practice-body { padding-top: 30px; }
  .video-head { grid-template-columns: 1fr; gap: 8px; }
  .video-head h3 { font-size: 23px; }
  .player-bar { align-items: stretch; flex-direction: column; }
  .player-bar > div { display: grid; grid-template-columns: 1fr 1fr; }
  .practice-notes { grid-template-columns: 1fr; }
  .practice-notes > div { padding: 22px 0; }
  .practice-notes > div + div { padding-left: 0; border-left: 0; border-top: 1px solid var(--qy-line); }
  .today-grid { grid-template-columns: 1fr; }
  .time-option { min-height: 130px; border-right: 0; border-bottom: 1px solid var(--qy-line); }
  .time-option:last-child { border-bottom: 0; }
  .checkin-panel { align-items: stretch; flex-direction: column; }
  .checkin-action { min-width: 0; }
  .notes-grid { grid-template-columns: 1fr; }
  .notes-grid article { border-right: 0; border-bottom: 1px solid var(--qy-line); }
  .notes-grid article:last-child { border-bottom: 0; }
  .main-footer { align-items: flex-start; flex-direction: column; }
  .main-footer p { text-align: left; }
}

/* =========================================================
   V2：老人友好字号 + 实际锻炼计时记录
========================================================= */

/* 整体字号上调：小标签仍小，但正文不低于 15~16px */
body { font-size: 17px; }
.sidebar-intro { font-size: 15px; line-height: 1.85; }
.side-nav a { min-height: 54px; font-size: 16px; }
.side-nav a span { font-size: 11px; }
.brand-copy small { font-size: 11px; }
.eyebrow { font-size: 12px; }
.hero-lead { font-size: 20px; }
.primary-action, .text-action { font-size: 16px; }
.hero-result { font-size: 16px; }
.hero-board-head span { font-size: 13px; }
.hero-board-list b { font-size: 16px; }
.hero-board-list small { font-size: 13px; }
.notice-strip strong { font-size: 18px; }
.notice-strip p { font-size: 15px; }
.section-heading > p { font-size: 16px; }
.catalog-item h3 { font-size: 19px; }
.catalog-item p { font-size: 15px; }
.catalog-tag { font-size: 12px; }
.practice-title b { font-size: 20px; }
.practice-title small { font-size: 13px; }
.practice-desc { font-size: 15px; }
.practice-open { font-size: 14px; }
.video-head h3 { font-size: 30px; }
.video-head p { font-size: 15px; }
.player-status { font-size: 13px; }
.reload-button, .source-button, .practice-timer-button { font-size: 13px; }
.practice-notes h4 { font-size: 18px; }
.practice-notes p, .practice-notes li { font-size: 15px; }
.traditional-note strong, .traditional-note p { font-size: 14px; }
.notes-grid h3 { font-size: 19px; }
.notes-grid p { font-size: 15px; }
.disclaimer strong, .disclaimer p { font-size: 14px; }

/* ---------- 左侧固定计时器 ---------- */
.side-timer {
  padding: 0 2px;
}
.side-timer h2 {
  margin: 0 0 13px;
  color: #fff;
  font-size: 20px;
  font-weight: 600;
}
.timer-label {
  display: block;
  margin-bottom: 6px;
  color: rgba(255,255,255,.58);
  font-size: 12px;
}
.side-timer .timer-practice-select {
  width: 100%;
  min-height: 40px;
  padding: 0 9px;
  border: 1px solid rgba(255,255,255,.26);
  border-radius: 0;
  color: #f3f5f0;
  background: rgba(255,255,255,.06);
  font-size: 13px;
}
.side-timer .timer-practice-select option {
  color: #26382f;
  background: #e5e1d6;
}
.side-timer-readout {
  margin: 13px 0 3px;
  color: #fff;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 38px;
  line-height: 1;
  letter-spacing: .03em;
  font-variant-numeric: tabular-nums;
}
.side-timer-state {
  min-height: 22px;
  margin: 0 0 12px;
  color: rgba(255,255,255,.62);
  font-size: 12px;
}
.side-timer-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 7px;
}
.side-timer-actions button {
  min-height: 36px;
  padding: 0 8px;
  border: 1px solid rgba(255,255,255,.32);
  background: transparent;
  color: #fff;
  cursor: pointer;
  font-size: 12px;
}
.side-timer-actions button:last-child {
  grid-column: 1 / -1;
  background: rgba(255,255,255,.1);
}
.side-timer-actions button:disabled {
  opacity: .38;
  cursor: default;
}
.side-timer-total {
  margin: 11px 0 0;
  color: rgba(255,255,255,.62);
  font-size: 12px;
}
.side-timer-total strong { color: #fff; font-weight: 600; }

/* ---------- 视频旁“开始计时” ---------- */
.practice-timer-button {
  display: inline-flex;
  min-height: 36px;
  align-items: center;
  justify-content: center;
  padding: 0 13px;
  border: 1px solid #8a7048;
  background: #8a7048;
  color: #fff;
  cursor: pointer;
}

/* ---------- 新“今日锻炼记录” ---------- */
.today {
  background: #d7d3c8;
  border-top: 1px solid var(--qy-line);
}
.timer-dashboard {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(330px, .75fr);
  gap: 34px;
  max-width: 980px;
  margin: auto;
}
.timer-console {
  padding: 30px;
  border: 1px solid var(--qy-line);
  background: rgba(255,255,255,.22);
}
.timer-console-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
}
.timer-kicker {
  display: block;
  margin-bottom: 5px;
  color: var(--qy-ochre);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .14em;
}
.timer-console h3 {
  margin: 0;
  color: #2a4135;
  font-size: 22px;
}
.timer-console .timer-practice-select {
  min-width: 210px;
  min-height: 42px;
  padding: 0 10px;
  border: 1px solid #9fa399;
  border-radius: 0;
  color: #33473c;
  background: #e4e0d5;
  font-size: 15px;
}
.timer-console .timer-practice-select:disabled {
  opacity: .65;
}
.timer-big {
  margin: 34px 0 5px;
  color: var(--qy-pine);
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(64px, 7vw, 94px);
  line-height: .95;
  font-variant-numeric: tabular-nums;
  letter-spacing: .02em;
}
.timer-main-state {
  min-height: 25px;
  margin: 0 0 24px;
  color: #68736c;
  font-size: 15px;
}
.timer-main-actions {
  display: flex;
  gap: 9px;
  flex-wrap: wrap;
}
.timer-main-actions button {
  min-height: 45px;
  padding: 0 18px;
  border: 1px solid #66776c;
  background: transparent;
  color: #3f5549;
  cursor: pointer;
  font-size: 15px;
}
.timer-main-actions .timer-start {
  border-color: var(--qy-pine);
  background: var(--qy-pine);
  color: #fff;
}
.timer-main-actions button:disabled {
  opacity: .4;
  cursor: default;
}

.today-stats {
  display: grid;
  grid-template-rows: repeat(3, 1fr);
  border-top: 1px solid var(--qy-line);
}
.today-stats article {
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-rows: auto auto;
  align-items: center;
  padding: 18px 2px;
  border-bottom: 1px solid var(--qy-line);
}
.today-stats span {
  color: #6c766f;
  font-size: 15px;
}
.today-stats strong {
  grid-row: 1 / 3;
  grid-column: 2;
  color: var(--qy-pine);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 28px;
  font-weight: 400;
  text-align: right;
}
.today-stats small {
  color: #898b84;
  font-size: 12px;
}

.session-history {
  max-width: 980px;
  margin: 55px auto 0;
  padding-top: 28px;
  border-top: 1px solid var(--qy-line);
}
.history-head {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 30px;
  margin-bottom: 17px;
}
.history-head h3 {
  margin: 6px 0 0;
  color: #2d4338;
  font-size: 24px;
}
.history-head > p {
  margin: 0;
  color: #737c76;
  font-size: 13px;
}
.history-list {
  border-top: 1px solid var(--qy-line);
}
.history-empty {
  margin: 0;
  padding: 22px 0;
  color: #747d77;
  font-size: 15px;
}
.history-row {
  display: grid;
  grid-template-columns: minmax(0,1fr) auto auto;
  gap: 24px;
  align-items: center;
  min-height: 68px;
  border-bottom: 1px solid var(--qy-line);
}
.history-row > div {
  display: flex;
  flex-direction: column;
}
.history-row strong {
  color: #30463a;
  font-size: 16px;
}
.history-row span {
  color: #858982;
  font-size: 12px;
}
.history-row > b {
  color: var(--qy-pine);
  font-size: 16px;
  font-weight: 600;
}
.history-row button {
  border: 0;
  border-bottom: 1px solid #9e8c70;
  background: transparent;
  color: #79674b;
  cursor: pointer;
  font-size: 12px;
}

@media (max-width: 1080px) {
  .timer-dashboard { grid-template-columns: 1fr; }
  .today-stats { grid-template-columns: repeat(3, 1fr); grid-template-rows: none; }
  .today-stats article { display: flex; flex-direction: column; align-items: flex-start; padding: 18px; border-right: 1px solid var(--qy-line); }
  .today-stats article:last-child { border-right: 0; }
  .today-stats strong { font-size: 25px; text-align: left; }
}

@media (max-width: 820px) {
  .sidebar-intro, .side-divider, .side-footer { display: none; }
  .side-timer {
    margin-top: 16px;
    padding-top: 14px;
    border-top: 1px solid rgba(255,255,255,.14);
  }
  .side-timer h2, .side-timer .timer-label, .side-timer .timer-practice-select, .side-timer-total { display: none; }
  .side-timer-readout { display: inline-block; margin: 0 15px 0 0; font-size: 30px; vertical-align: middle; }
  .side-timer-state { display: inline-block; margin: 0 14px 0 0; min-height: 0; vertical-align: middle; }
  .side-timer-actions { display: inline-flex; grid-template-columns: none; gap: 6px; vertical-align: middle; }
  .side-timer-actions button, .side-timer-actions button:last-child { grid-column: auto; min-height: 34px; padding: 0 10px; }
  .side-nav a { font-size: 14px; }
}

@media (max-width: 620px) {
  body { font-size: 16px; }
  .hero-lead { font-size: 18px; }
  .section-heading > p { font-size: 15px; }
  .catalog-item h3 { font-size: 18px; }
  .catalog-item p { font-size: 14px; }
  .practice-title b { font-size: 18px; }
  .practice-title small { font-size: 12px; }
  .video-head p { font-size: 14px; }
  .practice-notes p, .practice-notes li { font-size: 15px; }

  .timer-console { padding: 22px 18px; }
  .timer-console-head { flex-direction: column; gap: 12px; }
  .timer-console .timer-practice-select { width: 100%; min-width: 0; }
  .timer-big { margin-top: 24px; font-size: 62px; }
  .timer-main-actions { display: grid; grid-template-columns: 1fr 1fr; }
  .timer-main-actions button { width: 100%; }
  .timer-main-actions button:last-child { grid-column: 1 / -1; }
  .today-stats { grid-template-columns: 1fr; }
  .today-stats article { border-right: 0; }
  .history-head { align-items: flex-start; flex-direction: column; gap: 5px; }
  .history-row { grid-template-columns: 1fr auto; gap: 12px; padding: 10px 0; }
  .history-row button { grid-column: 2; }
  .side-timer-readout { font-size: 26px; }
  .side-timer-state { display: none; }
  .side-timer-actions button { font-size: 11px; }
}

/* =========================================================
   V3：老人友好可读性 + 简化侧栏计时 + PWA / 记录备份
========================================================= */

:root { --qy-sidebar: 300px; }

body { font-size: 18px; }
.sidebar-inner { padding-left: 30px; padding-right: 30px; }
.sidebar-intro { font-size: 16px; line-height: 1.9; }
.side-nav a { min-height: 58px; font-size: 17px; }
.side-nav a span { font-size: 12px; }
.brand-copy strong { font-size: 26px; }
.brand-copy small { font-size: 12px; }
.hero-board-list b { font-size: 17px; }
.hero-board-list small { font-size: 14px; }
.section-heading > p { font-size: 17px; }
.catalog-item { min-height: 128px; }
.catalog-item h3 { font-size: 21px; }
.catalog-item p { font-size: 16px; }
.catalog-tag { font-size: 13px; }
.practice-title b { font-size: 21px; }
.practice-title small { font-size: 14px; }
.practice-desc { font-size: 16px; }
.practice-open { font-size: 15px; }
.video-head p { font-size: 16px; }
.player-status { font-size: 14px; }
.reload-button, .source-button, .practice-timer-button { font-size: 14px; }
.practice-notes h4 { font-size: 19px; }
.practice-notes p, .practice-notes li { font-size: 16px; }
.traditional-note strong, .traditional-note p { font-size: 15px; }
.today-stats span { font-size: 16px; }
.today-stats small { font-size: 13px; }
.history-row strong { font-size: 17px; }
.history-row span { font-size: 14px; }
.history-row > b { font-size: 17px; }
.notes-grid p { font-size: 16px; }
.disclaimer strong, .disclaimer p { font-size: 15px; }

.side-timer h2 { margin-bottom: 12px; font-size: 22px; }
.side-timer-idle p {
  margin: 0 0 7px;
  color: rgba(255,255,255,.7);
  font-size: 14px;
}
.side-timer-idle a {
  color: #fff;
  font-size: 14px;
  text-underline-offset: 4px;
}
.side-current-practice {
  display: block;
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
}
.side-timer-readout { margin-top: 10px; font-size: 42px; }
.side-timer-state { font-size: 13px; }
.side-timer-actions { grid-template-columns: 1fr 1fr; }
.side-timer-actions button:last-child { grid-column: auto; }
.side-timer-total { font-size: 13px; }

.history-tools {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 9px;
}
.history-tools > p {
  margin: 0;
  color: #737c76;
  font-size: 14px;
}
.record-tools { display: flex; gap: 8px; }
.record-tools button,
.import-records-button {
  display: inline-flex;
  min-height: 38px;
  padding: 0 14px;
  align-items: center;
  justify-content: center;
  border: 1px solid #7c897f;
  background: transparent;
  color: #3f5549;
  cursor: pointer;
  font-size: 13px;
}
.record-tools button:hover,
.import-records-button:hover { background: rgba(255,255,255,.28); }

.install-app-button {
  width: 100%;
  min-height: 42px;
  margin: 0 0 20px;
  border: 1px solid rgba(255,255,255,.36);
  background: rgba(255,255,255,.08);
  color: #fff;
  cursor: pointer;
  font-size: 14px;
}
.install-app-button:hover { background: rgba(255,255,255,.14); }

.install-dialog {
  position: fixed;
  inset: 0;
  z-index: 3000;
  padding: 22px;
  display: grid;
  place-items: center;
  background: rgba(22,31,26,.58);
  backdrop-filter: blur(5px);
}
.install-dialog[hidden] { display: none; }
.install-dialog-card {
  position: relative;
  width: min(560px, 100%);
  padding: 34px 36px;
  border: 1px solid var(--qy-line);
  background: #e7e3d8;
  box-shadow: 0 24px 80px rgba(16,26,20,.28);
}
.install-dialog-card h2 {
  margin: 7px 0 20px;
  color: #293f34;
  font-size: 30px;
}
.install-dialog-close {
  position: absolute;
  right: 15px;
  top: 11px;
  border: 0;
  background: transparent;
  color: #516158;
  cursor: pointer;
  font-size: 28px;
}
.install-steps { display: grid; gap: 14px; }
.install-steps p { margin: 0; color: #536159; font-size: 16px; line-height: 1.8; }
.install-note { margin: 20px 0 0; color: #7b7569; font-size: 13px; }

@media (max-width: 1080px) {
  :root { --qy-sidebar: 255px; }
  .side-nav a { font-size: 16px; }
}

@media (max-width: 820px) {
  .side-timer { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
  .side-timer h2, .side-timer-total { display: none; }
  .side-timer-idle { display: flex; gap: 12px; align-items: center; }
  .side-timer-idle p { margin: 0; }
  .side-timer-active { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
  .side-timer-active[hidden] { display: none; }
  .side-current-practice { font-size: 14px; }
  .side-timer-readout { margin: 0; font-size: 29px; }
  .side-timer-state { margin: 0; }
  .side-timer-actions { display: flex; gap: 6px; }
  .side-timer-actions button { min-height: 34px; padding: 0 10px; }
  .history-tools { align-items: flex-start; }
  .record-tools { flex-wrap: wrap; }
}

@media (max-width: 620px) {
  body { font-size: 17px; }
  .catalog-item h3 { font-size: 20px; }
  .catalog-item p { font-size: 15px; }
  .practice-title b { font-size: 19px; }
  .practice-desc { font-size: 15px; }
  .install-dialog-card { padding: 30px 24px; }
  .install-dialog-card h2 { font-size: 26px; }
}


/* =========================================================
   V4：手机端安装入口 + 无障碍跳转链接修复
========================================================= */

/* 正常状态下隐藏“跳到主要内容”，仅键盘聚焦时显示 */
.han-skip-link {
  position: fixed;
  left: 12px;
  top: 12px;
  z-index: 5000;
  padding: 10px 14px;
  background: #ffffff;
  color: #1f342a;
  transform: translateY(-180%);
  transition: transform .15s ease;
}
.han-skip-link:focus {
  transform: translateY(0);
}

/* 手机/平板上保留安装入口；只隐藏侧栏底部的装饰文字 */
@media (max-width: 820px) {
  .side-footer {
    display: block !important;
    margin-top: 14px;
    padding-top: 0;
  }

  .side-footer > p,
  .side-footer > small {
    display: none;
  }

  .install-app-button {
    display: block;
    width: 100%;
    min-height: 48px;
    margin: 0;
    font-size: 15px;
  }
}


/* V13: prominent install CTA */
.install-help-text {
  margin: 8px 0 24px;
  color: #43554b;
  font-size: 18px;
  line-height: 1.8;
  white-space: pre-line;
}
.install-help-ok {
  width: 100%;
  min-height: 50px;
  border: 0;
  background: var(--qy-pine);
  color: #fff;
  cursor: pointer;
  font-size: 17px;
}
.install-mobile-cta {
  display: none;
}

@media (max-width: 820px) {
  .install-mobile-cta {
    position: fixed;
    z-index: 2200;
    left: 18px;
    right: 18px;
    bottom: 18px;
    display: block;
    min-height: 54px;
    padding: 0 18px;
    border: 1px solid rgba(255,255,255,.32);
    background: var(--qy-pine-deep);
    color: #fff;
    box-shadow: 0 10px 30px rgba(18,29,23,.28);
    font-size: 18px;
    font-weight: 700;
    letter-spacing: .03em;
  }
  .install-mobile-cta[hidden] { display: none; }
  body { padding-bottom: 86px; }
}


/* V16: one clear install entry on each screen size */
@media (min-width: 821px) {
  .install-mobile-cta { display: none !important; }
}

@media (max-width: 820px) {
  .side-footer { display: none !important; }

  .install-mobile-cta {
    position: fixed;
    z-index: 2200;
    left: 18px;
    right: 18px;
    bottom: max(18px, env(safe-area-inset-bottom));
    display: block;
    width: auto;
    min-height: 56px;
    padding: 0 18px;
    border: 1px solid rgba(255,255,255,.32);
    background: var(--qy-pine-deep);
    color: #fff;
    box-shadow: 0 10px 30px rgba(18,29,23,.28);
    font-size: 18px;
    font-weight: 700;
    letter-spacing: .03em;
    cursor: pointer;
  }

  .install-mobile-cta[hidden] { display: none !important; }
  body { padding-bottom: 92px; }
}