/* =========================================================
   CardioNotes · 循环系统（心血管内科）学习台
   ========================================================= */
:root {
  --paper: #f8f4ec;
  --paper-2: #f1eadd;
  --surface: #fffdf8;
  --ink: #262220;
  --ink-2: #5c534b;
  --muted: #8d837a;
  --line: #e9dfcf;
  --line-2: #dccfba;
  --primary: #1f5f6b;
  --primary-2: #2f7f88;
  --primary-soft: #e6f0ee;
  --crimson: #b23b2e;
  --crimson-soft: #fbeee9;
  --amber: #a8701f;
  --amber-soft: #fdf3e2;
  --green: #2f7a5c;
  --green-soft: #e9f3ed;
  --hl: #ffe9a8;
  --serif: "Songti SC", "Source Han Serif SC", "Noto Serif SC", Georgia, serif;
  --sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
          "Microsoft YaHei", "Segoe UI", sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, "PingFang SC", monospace;
  --shadow: 0 1px 2px rgba(80, 55, 35, .05), 0 8px 26px rgba(80, 55, 35, .06);
  --shadow-lg: 0 20px 50px rgba(80, 55, 35, .12);
  --r: 14px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0; color: var(--ink); font-family: var(--sans); font-size: 16px; line-height: 1.78;
  background:
    radial-gradient(1100px 520px at 82% -6%, #fffaf1 0%, rgba(255, 250, 241, 0) 60%),
    radial-gradient(800px 460px at 4% 10%, #f2ece0 0%, rgba(242, 236, 224, 0) 55%),
    var(--paper);
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4 { font-family: var(--serif); font-weight: 600; margin: 0; line-height: 1.3; letter-spacing: .01em; }
p { margin: 0 0 .9em; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; font-size: inherit; cursor: pointer; }
::selection { background: var(--hl); }

/* ---------------- 顶栏 ---------------- */
.topbar {
  position: sticky; top: 0; z-index: 60; height: 60px;
  display: flex; align-items: center; gap: 18px; padding: 0 22px;
  background: rgba(248, 244, 236, .9); backdrop-filter: blur(14px) saturate(1.3);
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 9px; font-family: var(--serif); font-size: 17px; font-weight: 600; white-space: nowrap; }
.brand i {
  width: 26px; height: 26px; border-radius: 8px; display: grid; place-items: center;
  background: linear-gradient(150deg, #2b7b85, #174f59); color: #fff; font-style: normal;
  font-size: 13px; box-shadow: 0 3px 10px rgba(23, 79, 89, .3);
}
.brand small { font-family: var(--sans); font-size: 11px; color: var(--muted); letter-spacing: .12em; margin-left: 2px; }
.topbar .spacer { flex: 1; }

.search-wrap { position: relative; width: min(340px, 36vw); }
.search {
  width: 100%; height: 36px; padding: 0 34px 0 34px; border-radius: 10px;
  border: 1px solid var(--line-2); background: var(--surface); color: var(--ink);
  font-size: 14px; outline: none; transition: border-color .16s, box-shadow .16s;
}
.search:focus { border-color: var(--primary-2); box-shadow: 0 0 0 3px rgba(47, 127, 136, .12); }
.search-ico { position: absolute; left: 11px; top: 8px; color: var(--muted); font-size: 14px; }
.search-wrap kbd {
  position: absolute; right: 8px; top: 8px; font-family: var(--sans); font-size: 11px;
  color: var(--muted); border: 1px solid var(--line-2); border-radius: 5px; padding: 1px 5px;
  background: var(--paper);
}
.results {
  position: absolute; top: 42px; left: 0; right: 0; max-height: 60vh; overflow: auto;
  background: var(--surface); border: 1px solid var(--line-2); border-radius: 12px;
  box-shadow: var(--shadow-lg); padding: 6px; display: none;
}
.results.on { display: block; }
.results a { display: block; padding: 8px 10px; border-radius: 8px; font-size: 14px; }
.results a:hover { background: var(--primary-soft); }
.results a b { font-weight: 600; color: var(--primary); }
.results a span { color: var(--muted); font-size: 12.5px; margin-left: 6px; }
.results .empty { padding: 18px 12px; color: var(--muted); font-size: 13.5px; }

.progress-pill {
  display: flex; align-items: center; gap: 8px; font-size: 12.5px; color: var(--ink-2);
  border: 1px solid var(--line-2); border-radius: 999px; padding: 5px 12px; background: var(--surface);
  white-space: nowrap;
}
.progress-pill .ring { width: 26px; height: 26px; }
.progress-pill .ring circle { fill: none; stroke-width: 3.5; }
.progress-pill .ring .bg { stroke: var(--line); }
.progress-pill .ring .fg { stroke: var(--primary-2); transition: stroke-dashoffset .4s; transform: rotate(-90deg); transform-origin: 50% 50%; }

/* ---------------- 布局 ---------------- */
.shell { display: grid; grid-template-columns: 252px minmax(0, 1fr); align-items: start; }
.sidebar {
  position: sticky; top: 60px; height: calc(100vh - 60px); overflow-y: auto;
  padding: 20px 14px 40px 22px; border-right: 1px solid var(--line);
  scrollbar-width: thin;
}
.sidebar::-webkit-scrollbar { width: 6px; }
.sidebar::-webkit-scrollbar-thumb { background: var(--line-2); border-radius: 4px; }
.side-title {
  font-size: 11px; letter-spacing: .18em; color: var(--muted); text-transform: uppercase;
  margin: 4px 0 10px 8px;
}
.nav-item {
  display: flex; align-items: center; gap: 10px; padding: 8px 10px; border-radius: 9px;
  font-size: 14px; color: var(--ink-2); margin-bottom: 2px; transition: background .15s, color .15s;
}
.nav-item .no {
  font-family: var(--mono); font-size: 11px; color: var(--muted); width: 20px; flex: none;
  letter-spacing: .02em;
}
.nav-item:hover { background: rgba(31, 95, 107, .07); color: var(--primary); }
.nav-item.on { background: var(--primary-soft); color: var(--primary); font-weight: 600; }
.nav-item.on .no { color: var(--primary-2); }
.nav-item .st { margin-left: auto; font-size: 10px; color: var(--amber); letter-spacing: .06em; }
.nav-item .done { margin-left: auto; color: var(--green); font-size: 13px; }
.nav-item .done + .st { display: none; }
.side-foot { margin: 22px 8px 0; font-size: 12px; color: var(--muted); line-height: 1.7; }
.side-foot b { color: var(--ink-2); }

.main { min-width: 0; padding: 34px 40px 90px; }
.container { max-width: 820px; margin: 0 auto; }

/* ---------------- 首页 ---------------- */
.hero { padding: 26px 0 10px; }
.hero .kicker {
  display: inline-flex; align-items: center; gap: 9px; font-size: 12px; letter-spacing: .18em;
  text-transform: uppercase; color: var(--primary); font-weight: 600; margin-bottom: 16px;
}
.hero .kicker::before { content: ""; width: 24px; height: 1.5px; background: var(--primary); }
.hero h1 { font-size: clamp(30px, 4vw, 44px); line-height: 1.25; }
.hero h1 em {
  font-style: normal; background: linear-gradient(180deg, transparent 64%, var(--hl) 64%);
  padding: 0 2px;
}
.hero .sub { margin-top: 16px; font-size: 16.5px; color: var(--ink-2); max-width: 36em; }
.stats { display: flex; gap: 30px; margin: 28px 0 6px; padding-top: 20px; border-top: 1px solid var(--line); flex-wrap: wrap; }
.stats div b { display: block; font-family: var(--serif); font-size: 25px; font-weight: 600; }
.stats div span { font-size: 12px; color: var(--muted); letter-spacing: .08em; }

.block-title { display: flex; align-items: baseline; gap: 12px; margin: 44px 0 18px; }
.block-title h2 { font-size: 23px; }
.block-title span { font-size: 12.5px; color: var(--muted); letter-spacing: .1em; }

.map-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.map-card {
  position: relative; padding: 16px 18px; background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--r); transition: transform .16s, box-shadow .16s, border-color .16s;
  display: block;
}
.map-card:hover { transform: translateY(-2px); box-shadow: var(--shadow); border-color: var(--line-2); }
.map-card .n { font-family: var(--mono); font-size: 11px; color: var(--muted); }
.map-card h3 { font-size: 17px; margin: 2px 0 6px; }
.map-card p { font-size: 13px; color: var(--muted); margin: 0; line-height: 1.6; }
.map-card .stars { position: absolute; top: 16px; right: 16px; font-size: 11px; color: var(--amber); letter-spacing: 1px; }
.map-card .topics { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 10px; }
.map-card .topics i {
  font-style: normal; font-size: 11.5px; color: var(--ink-2); background: var(--paper-2);
  padding: 2px 8px; border-radius: 6px;
}

.path { display: grid; gap: 10px; }
.path-step {
  display: grid; grid-template-columns: 40px 1fr; gap: 14px; padding: 15px 18px;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--r);
}
.path-step .pn {
  width: 32px; height: 32px; border-radius: 50%; display: grid; place-items: center;
  background: var(--primary-soft); color: var(--primary); font-family: var(--serif); font-size: 16px;
}
.path-step h4 { font-family: var(--sans); font-size: 15px; font-weight: 600; margin-bottom: 3px; }
.path-step p { font-size: 13.5px; color: var(--ink-2); margin: 0; }

.hot-list { display: grid; gap: 8px; counter-reset: hot; }
.hot-item {
  display: grid; grid-template-columns: 26px 1fr; gap: 10px; align-items: baseline;
  padding: 10px 14px; background: var(--surface); border: 1px solid var(--line); border-radius: 10px;
  font-size: 14px;
}
.hot-item::before {
  counter-increment: hot; content: counter(hot); font-family: var(--mono); font-size: 12px;
  color: var(--crimson); font-weight: 600;
}
.hot-item b { color: var(--ink); font-weight: 600; }
.hot-item span { color: var(--muted); font-size: 13px; }

/* ---------------- 章节页 ---------------- */
.chap-head { padding-bottom: 24px; border-bottom: 1px solid var(--line); }
.chap-meta { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-bottom: 10px; }
.chip {
  display: inline-flex; align-items: center; gap: 5px; padding: 3px 10px; border-radius: 999px;
  font-size: 12px; border: 1px solid var(--line-2); color: var(--ink-2); background: var(--surface);
}
.chip.hot { color: var(--crimson); border-color: #eec9c1; background: var(--crimson-soft); }
.chip.star { color: var(--amber); border-color: #ecd6ae; background: var(--amber-soft); }
.chap-head h1 { font-size: clamp(28px, 3.4vw, 38px); }
.chap-head .en { font-size: 12px; letter-spacing: .16em; text-transform: uppercase; color: var(--muted); margin-top: 4px; }
.chap-head .hook {
  margin-top: 14px; font-size: 16px; color: var(--ink-2); border-left: 3px solid var(--hl);
  padding-left: 14px; background: linear-gradient(90deg, rgba(255,233,168,.25), transparent 60%);
}
.chap-tools { display: flex; gap: 10px; margin-top: 18px; flex-wrap: wrap; }

.toggle {
  display: inline-flex; align-items: center; gap: 8px; padding: 7px 14px; border-radius: 9px;
  border: 1px solid var(--line-2); background: var(--surface); color: var(--ink-2); font-size: 13.5px;
  transition: all .16s;
}
.toggle:hover { border-color: var(--primary-2); color: var(--primary); }
.toggle.on { background: var(--primary); border-color: var(--primary); color: #fff; }
.toggle .dot { width: 7px; height: 7px; border-radius: 50%; background: currentColor; opacity: .5; }
.toggle.on .dot { opacity: 1; }

.questions { margin: 30px 0 6px; display: grid; gap: 8px; }
.q {
  border: 1px solid var(--line); background: var(--surface); border-radius: 12px; overflow: hidden;
}
.q > button {
  width: 100%; display: grid; grid-template-columns: 22px 1fr 16px; gap: 10px; align-items: baseline;
  padding: 13px 16px; background: none; border: 0; text-align: left; font-size: 14.5px; color: var(--ink);
}
.q > button:hover { background: rgba(31, 95, 107, .04); }
.q .qm { font-family: var(--mono); font-size: 12px; color: var(--primary); }
.q .ar { color: var(--muted); font-size: 12px; transition: transform .2s; }
.q.open .ar { transform: rotate(90deg); }
.q .qa {
  max-height: 0; overflow: hidden; transition: max-height .3s ease;
  font-size: 14px; color: var(--ink-2); background: #fcfaf5;
}
.q.open .qa { max-height: 420px; }
.q .qa div { padding: 0 16px 14px 48px; }

/* ---------------- 内容块 ---------------- */
.content { padding-top: 26px; }
.blk { margin: 0 0 18px; }
.blk.h { margin: 38px 0 16px; }
.blk.h h2 {
  font-size: 21px; display: flex; align-items: center; gap: 10px;
}
.blk.h h2::before {
  content: ""; width: 8px; height: 8px; border-radius: 2px; background: var(--primary);
  transform: rotate(45deg); flex: none;
}
.blk p { font-size: 15.5px; color: var(--ink-2); }
.blk p strong { color: var(--ink); font-weight: 600; }
.blk ul { margin: 0 0 .9em; padding-left: 20px; color: var(--ink-2); font-size: 15.5px; }
.blk ul li { margin-bottom: 6px; }
.blk ul li::marker { color: var(--primary-2); }
.blk ul li strong { color: var(--ink); }
mark { background: var(--hl); padding: 0 2px; border-radius: 2px; color: var(--ink); }

/* 重点 / 难点 / 易错 / 口诀 */
.card-lv { position: relative; padding: 16px 18px 15px 20px; border-radius: 12px; margin-bottom: 14px; }
.card-lv .tag {
  display: inline-flex; align-items: center; gap: 6px; font-size: 11.5px; font-weight: 700;
  letter-spacing: .1em; text-transform: uppercase; margin-bottom: 7px;
}
.card-lv .tag::before { font-size: 13px; }
.card-lv h4 { font-size: 15.5px; margin-bottom: 6px; font-family: var(--sans); font-weight: 600; }
.card-lv p, .card-lv ul { font-size: 14.8px; margin: 0 0 .5em; }
.card-lv p:last-child, .card-lv ul:last-child { margin-bottom: 0; }

.key { background: var(--surface); border: 1px solid var(--line); border-left: 4px solid var(--crimson); }
.key .tag { color: var(--crimson); }
.key .tag::before { content: "★"; }

.hard { background: var(--amber-soft); border: 1px solid #efdcc0; border-left: 4px solid var(--amber); }
.hard .tag { color: var(--amber); }
.hard .tag::before { content: "⚡"; }
.hard .ask { font-size: 14.5px; color: var(--ink); margin-bottom: 8px; font-weight: 500; }
.hard .ans { border-top: 1px dashed #e3cda9; padding-top: 9px; margin-top: 9px; }
.hard .ans p { color: #6a4f26; }

.pit { background: var(--crimson-soft); border: 1px solid #f0d2ca; border-left: 4px solid var(--crimson); }
.pit .tag { color: var(--crimson); }
.pit .tag::before { content: "⚠"; }
.pit .wrong { text-decoration: line-through; color: #9b4a3d; }
.pit .right { color: #7a2f24; font-weight: 600; }

.mn {
  background: linear-gradient(180deg, #fffdf0, #fdf7dd); border: 1px solid #eadfb3;
  border-radius: 12px; padding: 15px 18px; margin-bottom: 14px; position: relative;
}
.mn::before {
  content: "🧠"; position: absolute; right: 14px; top: 12px; font-size: 15px; opacity: .55;
}
.mn .tag { color: #8a7223; font-size: 11.5px; font-weight: 700; letter-spacing: .1em; display: block; margin-bottom: 4px; }
.mn .saying {
  font-family: var(--serif); font-size: 17px; color: #5e4a12; letter-spacing: .04em;
  line-height: 1.7; margin-bottom: 6px;
}
.mn p { font-size: 13.5px; color: #7a6a3a; margin: 0; }

/* 对比表 */
.tbl-wrap { margin: 6px 0 20px; border: 1px solid var(--line); border-radius: 12px; overflow: hidden; background: var(--surface); }
.tbl-cap {
  display: flex; align-items: center; gap: 8px; padding: 11px 16px; font-size: 13.5px; font-weight: 600;
  color: var(--ink); background: #fcf8f0; border-bottom: 1px solid var(--line);
}
.tbl-cap::before { content: "▦"; color: var(--primary-2); font-size: 13px; }
.tbl-scroll { overflow-x: auto; }
table.tbl { width: 100%; border-collapse: collapse; font-size: 13.6px; min-width: 520px; }
table.tbl th, table.tbl td { padding: 9px 12px; text-align: left; vertical-align: top; border-bottom: 1px solid var(--line); }
table.tbl th {
  background: #f8f3e9; font-weight: 600; color: var(--ink); font-size: 12.8px; white-space: nowrap;
  position: sticky; top: 0;
}
table.tbl td:first-child { font-weight: 600; color: var(--ink); background: #fdfbf6; white-space: nowrap; }
table.tbl tr:last-child td { border-bottom: 0; }
table.tbl tbody tr:hover td { background: #fdfaf3; }
.tbl-note { padding: 9px 16px; font-size: 12.5px; color: var(--muted); border-top: 1px dashed var(--line-2); }

/* 诊断标准 */
.crit { border: 1px solid var(--line); border-radius: 12px; background: var(--surface); padding: 15px 18px; margin-bottom: 16px; }
.crit h4 { font-family: var(--sans); font-size: 14.5px; font-weight: 600; margin-bottom: 9px; display: flex; align-items: center; gap: 8px; }
.crit h4::before { content: "✓"; color: var(--green); font-size: 12px; border: 1px solid #b9d9c9; border-radius: 50%; width: 18px; height: 18px; display: grid; place-items: center; }
.crit ol { margin: 0; padding-left: 20px; font-size: 14.3px; color: var(--ink-2); }
.crit ol li { margin-bottom: 5px; }
.crit .note { margin-top: 9px; font-size: 12.8px; color: var(--muted); }

/* 流程 */
.flow { display: grid; gap: 0; margin-bottom: 18px; }
.flow-step { position: relative; padding: 0 0 14px 26px; }
.flow-step::before {
  content: ""; position: absolute; left: 5px; top: 7px; width: 7px; height: 7px; border-radius: 50%;
  background: var(--primary-2); box-shadow: 0 0 0 3px var(--primary-soft);
}
.flow-step::after {
  content: ""; position: absolute; left: 8px; top: 18px; bottom: 0; width: 1px; background: var(--line-2);
}
.flow-step:last-child::after { display: none; }
.flow-step b { font-size: 14.5px; font-weight: 600; display: block; }
.flow-step span { font-size: 13.5px; color: var(--ink-2); }

/* 心电图卡 */
.ecg-card { border: 1px solid var(--line); border-radius: 12px; background: var(--surface); overflow: hidden; margin-bottom: 18px; }
.ecg-card .ecg-head { display: flex; align-items: center; gap: 10px; padding: 11px 16px; background: #fcf8f0; border-bottom: 1px solid var(--line); }
.ecg-card .ecg-head b { font-size: 14px; }
.ecg-card .ecg-head span { font-size: 12px; color: var(--muted); }
.ecg-scroll { overflow-x: auto; }
.ecg-card svg { display: block; width: 100%; height: auto; min-width: 100%; }
@media (max-width: 760px) { .ecg-card svg { min-width: 620px; } }
.ecg-feat { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 8px; padding: 12px 16px; border-top: 1px solid var(--line); background: #fdfbf6; }
.ecg-feat div { font-size: 13px; color: var(--ink-2); padding-left: 14px; position: relative; }
.ecg-feat div::before { content: "•"; position: absolute; left: 2px; color: var(--crimson); }

/* 章内自测 */
.quizbox { border: 1px solid var(--line); border-radius: 12px; background: var(--surface); overflow: hidden; margin-bottom: 18px; }
.quizbox .qhead { padding: 12px 16px; background: #fcf8f0; border-bottom: 1px solid var(--line); font-size: 13px; font-weight: 600; display: flex; gap: 8px; align-items: center; }
.quizbox .qhead::before { content: "✎"; color: var(--primary-2); }
.qitem { padding: 14px 16px; border-bottom: 1px solid var(--line); }
.qitem:last-child { border-bottom: 0; }
.qitem .qq { font-size: 14.5px; font-weight: 500; margin-bottom: 10px; }
.qitem .opts { display: grid; gap: 6px; }
.qitem .opt {
  text-align: left; padding: 8px 12px; border-radius: 8px; border: 1px solid var(--line);
  background: #fdfbf6; font-size: 13.8px; color: var(--ink-2); transition: all .15s;
  display: grid; grid-template-columns: 18px 1fr; gap: 8px;
}
.qitem .opt:hover:not(.locked) { border-color: var(--primary-2); background: #fff; }
.qitem .opt .k { font-family: var(--mono); font-size: 11.5px; color: var(--muted); }
.qitem .opt.ok { border-color: #8ec6ab; background: var(--green-soft); color: #1f6249; }
.qitem .opt.ok .k { color: var(--green); }
.qitem .opt.no { border-color: #e8b1a5; background: var(--crimson-soft); color: #8f2f22; }
.qitem .opt.no .k { color: var(--crimson); }
.qitem .exp { display: none; margin-top: 9px; padding: 10px 12px; border-left: 3px solid var(--primary-2); background: #f7faf9; font-size: 13.3px; color: var(--ink-2); }
.qitem .exp.show { display: block; }

/* 章节底部 */
.chap-foot { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 34px; padding-top: 22px; border-top: 1px solid var(--line); }
.chap-foot a:last-child { margin-left: auto; }
.done-btn {
  display: inline-flex; align-items: center; gap: 8px; padding: 10px 18px; border-radius: 10px;
  border: 1px solid var(--green); color: var(--green); background: transparent; font-size: 14px;
}
.done-btn.on { background: var(--green); color: #fff; }

/* 只看重点 */
.focus-mode .blk[data-lv="normal"] { display: none; }
.focus-note {
  display: none; margin: 18px 0 0; padding: 10px 14px; border-radius: 10px; font-size: 13px;
  background: var(--amber-soft); border: 1px dashed #e6cfa6; color: #7c5a22;
}
.focus-mode .focus-note { display: block; }

/* 搜索高亮 */
.hl-flash { animation: flash 1.6s ease; }
@keyframes flash {
  0% { background: #fff3c4; box-shadow: 0 0 0 6px #fff3c4; }
  100% { background: transparent; box-shadow: none; }
}

/* 页脚 */
.foot { max-width: 820px; margin: 60px auto 0; padding: 24px 0 0; border-top: 1px solid var(--line); font-size: 12.8px; color: var(--muted); display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; }

/* 响应式 */
@media (max-width: 1080px) {
  .shell { grid-template-columns: 1fr; }
  .sidebar {
    position: static; height: auto; border-right: 0; border-bottom: 1px solid var(--line);
    padding: 12px 16px; display: flex; gap: 6px; overflow-x: auto; white-space: nowrap;
  }
  .side-title, .side-foot { display: none; }
  .nav-item { margin: 0; padding: 6px 12px; background: var(--surface); border: 1px solid var(--line); }
  .nav-item .no, .nav-item .st, .nav-item .done { display: none; }
  .main { padding: 24px 20px 70px; }
}
@media (max-width: 760px) {
  .topbar { height: 54px; padding: 0 14px; gap: 10px; }
  .brand small { display: none; }
  .search-wrap { width: auto; flex: 1; }
  .progress-pill { display: none; }
  .map-grid { grid-template-columns: 1fr; }
  .main { padding: 20px 16px 60px; }
  .chap-head h1 { font-size: 26px; }
  .blk p, .blk ul { font-size: 15px; }
  .ecg-feat { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}