:root {
  --paper: #f3efe4;
  --paper-2: #e9e2d2;
  --ink: #1c211c;
  --muted: #65685f;
  --red: #d8452f;
  --green: #174f42;
  --yellow: #f4bf3a;
  --line: rgba(28, 33, 28, 0.22);
  --serif: "Noto Serif SC", "Songti SC", serif;
  --mono: "DM Mono", monospace;
  --brush: "Ma Shan Zheng", cursive;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: var(--serif); font-size: 17px; line-height: 1.85; }
a { color: inherit; text-underline-offset: 4px; }
button, input, textarea { font: inherit; }
button { color: inherit; }
::selection { color: var(--ink); background: var(--yellow); }
.skip-link { position: fixed; z-index: 100; top: 10px; left: 10px; padding: 8px 12px; background: var(--ink); color: var(--paper); transform: translateY(-150%); }
.skip-link:focus { transform: none; }
.reading-progress { position: fixed; z-index: 99; top: 0; width: 100%; height: 4px; }
.reading-progress span { display: block; width: 0; height: 100%; background: var(--red); }

.hero { min-height: 100vh; padding: 0 6vw 48px; overflow: hidden; border-bottom: 1px solid var(--ink); background: radial-gradient(circle at 78% 40%, rgba(244,191,58,.22), transparent 28%), linear-gradient(rgba(28,33,28,.035) 1px, transparent 1px), var(--paper); background-size: auto, 100% 38px, auto; }
.topbar { height: 88px; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--ink); font-family: var(--mono); font-size: 12px; letter-spacing: .08em; text-transform: uppercase; }
.brand { text-decoration: none; }
.brand span { display: inline-grid; place-items: center; width: 42px; height: 42px; margin-right: 9px; color: var(--paper); background: var(--green); border-radius: 50%; font-family: var(--serif); font-weight: 700; }
.nav-actions { display: flex; gap: 24px; align-items: center; }
.outline-btn { display: none; padding: 6px 14px; background: transparent; border: 1px solid var(--ink); cursor: pointer; }
.mobile-toc { position: relative; z-index: 20; padding: 18px; background: var(--ink); color: var(--paper); }
.mobile-toc a { display: block; padding: 8px; text-decoration: none; border-bottom: 1px solid rgba(255,255,255,.2); }
.hero-grid { max-width: 1450px; min-height: calc(100vh - 220px); margin: 0 auto; display: grid; grid-template-columns: 1.04fr .96fr; align-items: center; }
.eyebrow, .kicker, .label, .issue { font: 500 12px/1.4 var(--mono); letter-spacing: .13em; text-transform: uppercase; }
.eyebrow { display: inline-block; margin-bottom: 28px; padding: 5px 10px; color: var(--paper); background: var(--green); transform: rotate(-1deg); }
h1 { margin: 0; max-width: 720px; font-size: clamp(62px, 8.6vw, 142px); font-weight: 900; line-height: .96; letter-spacing: -.08em; }
h1 em { position: relative; color: var(--red); font-family: var(--brush); font-size: 1.17em; font-weight: 400; letter-spacing: 0; }
h1 em::after { content: ""; position: absolute; left: -12%; bottom: 3%; width: 130%; height: 10px; background: var(--red); opacity: .28; transform: rotate(-3deg); }
.hero-subtitle { margin: 34px 0; font-size: clamp(19px, 1.8vw, 27px); font-weight: 500; line-height: 1.6; }
.hero-meta { display: flex; flex-wrap: wrap; gap: 8px 26px; font: 12px var(--mono); color: var(--muted); }
.hero-visual { position: relative; aspect-ratio: 1; max-width: 620px; width: 100%; justify-self: end; color: var(--green); }
.hero-visual svg { position: absolute; inset: 0; }
.sun { position: absolute; z-index: 3; top: 28%; left: 29%; width: 42%; aspect-ratio: 1; display: grid; place-items: center; border-radius: 50%; color: var(--paper); background: var(--red); box-shadow: 17px 16px 0 var(--yellow); }
.sun::before, .sun::after { content: ""; position: absolute; inset: -18px; border: 1px solid var(--red); border-radius: 48% 52% 49% 51%; transform: rotate(18deg); }
.sun::after { inset: -34px; border-style: dashed; transform: rotate(-20deg); }
.sun span { font-family: var(--brush); font-size: clamp(54px, 7vw, 96px); transform: rotate(-7deg); }
.orbit { position: absolute; border: 1px solid var(--line); border-radius: 50%; }
.orbit-one { inset: 12%; }
.orbit-two { inset: 2%; border-style: dashed; }
.signal { position: absolute; z-index: 4; padding: 8px 12px; border: 1px solid var(--ink); background: var(--paper); font: 11px var(--mono); box-shadow: 4px 4px 0 var(--ink); }
.signal-a { top: 12%; left: 5%; transform: rotate(-5deg); }
.signal-b { top: 12%; right: 2%; transform: rotate(4deg); }
.signal-c { bottom: 25%; right: -2%; transform: rotate(-3deg); }
.stamp { position: absolute; z-index: 5; left: 1%; bottom: 16%; width: 130px; height: 130px; display: grid; place-content: center; text-align: center; border: 3px double var(--green); border-radius: 50%; font: 13px/1.7 var(--mono); transform: rotate(10deg); }
.stamp b { color: var(--red); }
.hero-note { max-width: 1450px; margin: 0 auto; display: grid; grid-template-columns: 110px 1fr; align-items: center; gap: 25px; padding-top: 18px; border-top: 1px solid var(--ink); }
.hero-note p { max-width: 980px; margin: 0; font-size: 15px; }
.marker { justify-self: start; padding: 2px 10px; background: var(--yellow); font: 12px var(--mono); transform: rotate(-2deg); }

.section { position: relative; padding: 130px max(6vw, 24px); border-bottom: 1px solid var(--ink); }
.section-index { position: absolute; top: 35px; right: 6vw; font: 50px/1 var(--mono); color: rgba(28,33,28,.14); }
.section-heading { max-width: 1120px; margin: 0 auto 70px; }
.kicker { margin: 0 0 18px; color: var(--red); }
h2 { margin: 0; font-size: clamp(42px, 6vw, 80px); line-height: 1.15; letter-spacing: -.055em; }
.lead { max-width: 800px; margin: 25px 0 0; color: var(--muted); font-size: 18px; }
.six-grid { max-width: 1320px; margin: 0 auto; display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--ink); border-left: 1px solid var(--ink); }
.principle { min-height: 260px; padding: 28px; border-right: 1px solid var(--ink); border-bottom: 1px solid var(--ink); transition: .25s ease; }
.principle:hover { color: var(--paper); background: var(--green); transform: translate(-5px,-5px); box-shadow: 6px 6px 0 var(--red); }
.principle span { font: 12px var(--mono); }
.principle h3 { margin: 28px 0 12px; font-size: 24px; line-height: 1.3; }
.principle p { margin: 0; font-size: 15px; line-height: 1.8; }
.takeaway { max-width: 940px; margin: 70px auto 0; display: grid; grid-template-columns: 150px 1fr; gap: 30px; padding: 28px 35px; color: var(--paper); background: var(--ink); transform: rotate(.5deg); }
.takeaway strong { color: var(--yellow); font: 13px var(--mono); }
.takeaway p { margin: 0; font-size: 20px; }

.framework { background: var(--paper-2); }
.framework-stack { max-width: 1320px; margin: 0 auto; border-top: 1px solid var(--ink); }
.framework-row { display: grid; grid-template-columns: 140px minmax(0, 1fr) 280px; gap: 35px; padding: 52px 0; border-bottom: 1px solid var(--ink); }
.glyph { font: 110px/1 var(--brush); color: var(--red); }
.framework-copy h3 { margin: 8px 0 16px; font-size: 31px; line-height: 1.35; }
.framework-copy > p:not(.label) { max-width: 720px; margin: 0; }
.label { color: var(--green); }
blockquote { margin: 25px 0 0; padding: 14px 20px; border-left: 4px solid var(--yellow); background: rgba(255,255,255,.4); font-size: 15px; }
.framework-list { margin: 34px 0 0; padding: 0; list-style: none; font-size: 14px; }
.framework-list li { padding: 9px 0; border-bottom: 1px solid var(--line); }
.framework-list li::before { content: "— "; color: var(--red); }
.window-diagram, .micro-flow { margin-top: 30px; display: flex; align-items: center; gap: 10px; font: 11px var(--mono); }
.window-diagram i { flex: 1; height: 1px; background: var(--ink); }
.window-diagram .hot { padding: 4px 8px; color: var(--paper); background: var(--red); }
.formula { margin-top: 28px; display: flex; flex-wrap: wrap; align-items: center; gap: 8px; font: 12px var(--mono); }
.formula span { padding: 7px 10px; border: 1px solid var(--ink); background: var(--paper); }
.formula span:first-child { color: var(--paper); background: var(--green); }
.micro-flow { flex-wrap: wrap; }
.micro-flow span { padding: 6px 10px; border-bottom: 2px solid var(--red); }
.tool-tags { margin-top: 24px; display: flex; flex-wrap: wrap; gap: 8px; }
.tool-tags span { padding: 5px 9px; border: 1px solid var(--ink); font: 11px var(--mono); }

.workflow { color: var(--paper); background: var(--green); }
.workflow .section-index { color: rgba(255,255,255,.13); }
.workflow .kicker { color: var(--yellow); }
.workflow .lead { color: rgba(255,255,255,.72); }
.days { max-width: 1120px; margin: 0 auto; }
.day { display: grid; grid-template-columns: 120px 1fr; gap: 30px; padding: 35px 0; border-top: 1px solid rgba(255,255,255,.32); }
.day:last-child { border-bottom: 1px solid rgba(255,255,255,.32); }
.day-no { font: 42px/1 var(--mono); color: var(--yellow); }
.day h3 { margin: 0 0 7px; font-size: 27px; }
.day p { margin: 0; color: rgba(255,255,255,.75); }
.day strong { display: inline-block; margin-top: 13px; color: var(--yellow); font: 12px var(--mono); }
.review-loop { max-width: 1120px; margin: 60px auto 0; display: grid; grid-template-columns: 1fr auto 1fr auto 1fr; align-items: center; gap: 20px; }
.review-loop div { min-height: 155px; padding: 20px; border: 1px solid rgba(255,255,255,.45); }
.review-loop span { color: var(--yellow); font: 28px var(--mono); }
.review-loop p { margin: 12px 0 0; font-size: 14px; }

.scorecard-section { background: radial-gradient(circle at 8% 70%, rgba(216,69,47,.12), transparent 23%), var(--paper); }
.score-layout { max-width: 1220px; margin: 0 auto; display: grid; grid-template-columns: 1.45fr .7fr; gap: 50px; align-items: start; }
.score-form > label:first-child, .evidence { display: block; margin-bottom: 25px; font-weight: 700; }
.score-form input[type="text"], textarea { display: block; width: 100%; margin-top: 8px; padding: 12px 14px; border: 1px solid var(--ink); border-radius: 0; color: var(--ink); background: rgba(255,255,255,.35); outline: none; }
.score-form input:focus, textarea:focus { box-shadow: 4px 4px 0 var(--yellow); }
.score-item { display: grid; grid-template-columns: minmax(220px,1fr) 190px 35px; align-items: center; gap: 20px; padding: 20px 0; border-top: 1px solid var(--line); }
.score-item label { display: block; font-weight: 700; }
.score-item small { display: block; margin-top: 3px; color: var(--muted); line-height: 1.5; }
.score-item output { font: 22px var(--mono); }
input[type="range"] { accent-color: var(--red); }
.evidence { margin-top: 24px; font-size: 15px; }
.evidence textarea { font-weight: 400; resize: vertical; }
.score-result { position: sticky; top: 30px; padding: 35px; border: 1px solid var(--ink); background: var(--paper-2); box-shadow: 12px 12px 0 var(--ink); }
.score-result > p:first-child { margin: 0; font: 12px var(--mono); }
.score-number { margin: 15px 0; }
.score-number strong { font: 82px/1 var(--mono); color: var(--red); }
.score-number span { color: var(--muted); font: 16px var(--mono); }
.score-meter { height: 8px; background: rgba(28,33,28,.15); }
.score-meter i { display: block; width: 56.6%; height: 100%; background: var(--red); transition: width .25s ease; }
.score-result h3 { margin: 28px 0 5px; font-size: 27px; }
.score-result > p { font-size: 14px; }
.decision-rules { margin: 24px 0; border-top: 1px solid var(--line); }
.decision-rules span { display: flex; gap: 15px; padding: 9px 0; border-bottom: 1px solid var(--line); font-size: 13px; }
.decision-rules b { min-width: 50px; font: 11px var(--mono); }
.print-btn, .copy-btn { width: 100%; padding: 11px 15px; border: 1px solid var(--ink); color: var(--paper); background: var(--green); cursor: pointer; transition: .2s; }
.print-btn:hover, .copy-btn:hover { color: var(--ink); background: var(--yellow); }

.qa-section { color: var(--paper); background: #242924; }
.qa-section .section-index { color: rgba(255,255,255,.1); }
.qa-section .kicker { color: var(--yellow); }
.qa-section .lead { color: rgba(255,255,255,.7); }
.qa-toolbar { max-width: 1220px; margin: 0 auto 45px; padding: 24px; border: 1px solid rgba(255,255,255,.25); background: rgba(255,255,255,.04); }
.qa-search { display: grid; grid-template-columns: 120px 1fr; align-items: center; gap: 16px; font: 12px var(--mono); }
.qa-search input { width: 100%; padding: 12px 14px; border: 0; border-bottom: 1px solid rgba(255,255,255,.55); border-radius: 0; outline: none; color: var(--paper); background: transparent; }
.qa-search input::placeholder { color: rgba(255,255,255,.42); }
.qa-search input:focus { border-color: var(--yellow); box-shadow: 0 3px 0 rgba(244,191,58,.25); }
.qa-filters { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 22px; }
.qa-filter { padding: 6px 11px; border: 1px solid rgba(255,255,255,.32); color: var(--paper); background: transparent; font: 11px var(--mono); cursor: pointer; }
.qa-filter:hover, .qa-filter.active { border-color: var(--yellow); color: var(--ink); background: var(--yellow); }
.qa-count { margin: 16px 0 0; color: rgba(255,255,255,.55); font: 11px var(--mono); }
.qa-directory { max-width: 1220px; margin: 0 auto 70px; display: grid; grid-template-columns: repeat(4,1fr); border-top: 1px solid rgba(255,255,255,.28); border-left: 1px solid rgba(255,255,255,.28); }
.qa-directory a { padding: 16px; border-right: 1px solid rgba(255,255,255,.28); border-bottom: 1px solid rgba(255,255,255,.28); text-decoration: none; font-size: 14px; }
.qa-directory a:hover { color: var(--ink); background: var(--yellow); }
.qa-directory b { display: block; margin-bottom: 5px; color: var(--red); font: 11px var(--mono); }
.qa-groups { max-width: 1220px; margin: 0 auto; }
.qa-group { display: grid; grid-template-columns: 250px 1fr; gap: 45px; padding: 65px 0; border-top: 1px solid rgba(255,255,255,.35); scroll-margin-top: 20px; }
.qa-group > header { position: sticky; top: 35px; align-self: start; display: grid; grid-template-columns: 55px 1fr; gap: 14px; }
.qa-group > header > span { font: 42px/1 var(--mono); color: var(--red); }
.qa-group > header p { margin: 0; color: var(--yellow); font: 10px var(--mono); }
.qa-group > header h3 { margin: 5px 0 0; font-size: 24px; line-height: 1.3; }
.qa-list { border-top: 1px solid rgba(255,255,255,.32); }
.qa-item { border-bottom: 1px solid rgba(255,255,255,.32); }
.qa-item summary { position: relative; padding: 20px 45px 20px 0; cursor: pointer; list-style: none; font-weight: 700; }
.qa-item summary::-webkit-details-marker { display: none; }
.qa-item summary::before, .qa-item summary::after { content: ""; position: absolute; top: 31px; right: 4px; width: 19px; height: 1px; background: var(--yellow); }
.qa-item summary::after { transform: rotate(90deg); transition: .2s; }
.qa-item[open] summary::after { transform: rotate(0); }
.qa-answer { padding: 0 45px 22px 0; }
.qa-answer p { margin: 0 0 10px; color: rgba(255,255,255,.72); font-size: 14px; }
.qa-answer b { display: inline-block; margin-right: 8px; color: var(--yellow); font: 11px var(--mono); }
.qa-item[hidden], .qa-group[hidden] { display: none; }
.qa-empty { max-width: 860px; margin: 0 auto; padding: 35px; border: 1px dashed var(--yellow); color: var(--yellow); text-align: center; }

.risks { background: var(--paper-2); }
.myth-list { max-width: 1120px; margin: 0 auto; border-top: 1px solid var(--ink); }
.myth { border-bottom: 1px solid var(--ink); }
.myth summary { display: grid; grid-template-columns: 50px 1fr 30px; gap: 20px; align-items: center; padding: 25px 0; cursor: pointer; list-style: none; }
.myth summary::-webkit-details-marker { display: none; }
.myth summary span { font: 12px var(--mono); color: var(--red); }
.myth summary b { font-size: 19px; }
.myth summary i { position: relative; width: 22px; height: 22px; }
.myth summary i::before, .myth summary i::after { content: ""; position: absolute; top: 10px; width: 22px; height: 1px; background: var(--ink); }
.myth summary i::after { transform: rotate(90deg); transition: .2s; }
.myth[open] summary i::after { transform: rotate(0); }
.myth > div { max-width: 850px; margin-left: 70px; padding: 0 0 30px; }
.myth > div p { margin-top: 0; }
.myth > div a, .source-note { color: var(--green); font: 12px var(--mono); }

.template-grid { max-width: 1220px; margin: 0 auto; display: grid; grid-template-columns: repeat(3, 1fr); gap: 25px; }
.template-card { display: flex; flex-direction: column; min-height: 470px; padding: 25px; border: 1px solid var(--ink); box-shadow: 7px 7px 0 var(--yellow); }
.template-card > p { margin: 0; color: var(--red); font: 11px var(--mono); }
.template-card h3 { margin: 12px 0 20px; font-size: 28px; }
.template-card pre { flex: 1; margin: 0 0 25px; white-space: pre-wrap; font: 13px/2 var(--mono); }
.sources { color: var(--paper); background: var(--ink); }
.sources .section-index { color: rgba(255,255,255,.1); }
.sources .kicker { color: var(--yellow); }
.source-layout { max-width: 1220px; margin: 0 auto; display: grid; grid-template-columns: 1.1fr 1fr 1fr; gap: 45px; }
.source-layout h3 { color: var(--yellow); }
.source-layout p, .source-layout li { font-size: 14px; color: rgba(255,255,255,.72); }
.source-layout ul { padding-left: 20px; }
.source-layout li { margin-bottom: 8px; }
.truth { display: inline-block; padding: 2px 5px; color: var(--ink); font: 10px var(--mono); }
.verified { background: #91cdb4; }
.heuristic { background: var(--yellow); }
.decision { background: #e58a78; }
.update-date { margin-top: 30px; font: 11px var(--mono) !important; }
footer { min-height: 310px; padding: 70px 6vw; display: grid; grid-template-columns: 1fr 1fr; align-items: end; gap: 50px; color: var(--paper); background: var(--red); }
.footer-mark { margin: 0 0 30px; font-size: clamp(30px,4vw,58px); font-weight: 900; line-height: 1.35; letter-spacing: -.04em; }
.footer-mark + a { font: 12px var(--mono); }
.footer-mark + a:hover { color: var(--yellow); }
.footer-mark + a:focus-visible, a:focus-visible, button:focus-visible { outline: 3px solid var(--yellow); outline-offset: 3px; }
footer > p { justify-self: end; max-width: 540px; font-size: 13px; }

.reveal { opacity: 1; transform: none; }
.motion-ready .reveal { opacity: 0; transform: translateY(22px); transition: opacity .75s ease, transform .75s ease; }
.motion-ready .reveal.visible { opacity: 1; transform: none; }
.delay-1 { transition-delay: .12s; }
.delay-2 { transition-delay: .24s; }

@media (max-width: 980px) {
  .hero { min-height: auto; }
  .hero-grid { grid-template-columns: 1fr; padding: 85px 0 20px; }
  .hero-visual { max-width: 570px; justify-self: center; }
  .six-grid { grid-template-columns: repeat(2,1fr); }
  .framework-row { grid-template-columns: 100px 1fr; }
  .framework-list { grid-column: 2; margin-top: 0; }
  .glyph { font-size: 84px; }
  .score-layout { grid-template-columns: 1fr; }
  .score-result { position: static; }
  .template-grid { grid-template-columns: 1fr; }
  .template-card { min-height: 0; }
  .source-layout { grid-template-columns: 1fr; }
  .review-loop { grid-template-columns: 1fr; }
  .review-loop > i { transform: rotate(90deg); justify-self: center; }
  .qa-directory { grid-template-columns: repeat(2,1fr); }
  .qa-group { grid-template-columns: 180px 1fr; gap: 28px; }
}

@media (max-width: 640px) {
  body { font-size: 16px; }
  .hero { padding: 0 20px 30px; }
  .topbar { height: 70px; }
  .issue { display: none; }
  .outline-btn { display: block; }
  .hero-grid { padding-top: 60px; }
  .hero-copy { position: relative; z-index: 6; }
  h1 { font-size: clamp(57px, 19vw, 88px); }
  .desktop-only { display: none; }
  .hero-subtitle { margin: 26px 0; font-size: 18px; }
  .hero-visual { margin-top: -25px; }
  .signal { font-size: 9px; }
  .stamp { width: 92px; height: 92px; font-size: 10px; }
  .hero-note { grid-template-columns: 1fr; gap: 12px; }
  .section { padding: 90px 20px; }
  .section-index { top: 22px; right: 20px; font-size: 36px; }
  .section-heading { margin-bottom: 45px; }
  h2 { font-size: 39px; }
  .six-grid { grid-template-columns: 1fr; }
  .principle { min-height: auto; }
  .takeaway { grid-template-columns: 1fr; gap: 10px; padding: 24px; }
  .takeaway p { font-size: 17px; }
  .framework-row { grid-template-columns: 1fr; gap: 15px; padding: 35px 0; }
  .framework-list { grid-column: auto; }
  .glyph { font-size: 76px; }
  .framework-copy h3 { font-size: 25px; }
  .window-diagram { flex-wrap: wrap; }
  .window-diagram i { min-width: 20px; }
  .day { grid-template-columns: 65px 1fr; gap: 15px; }
  .day-no { font-size: 28px; }
  .day h3 { font-size: 22px; }
  .day p { font-size: 14px; }
  .score-item { grid-template-columns: 1fr 35px; }
  .score-item input { grid-column: 1; }
  .score-item output { grid-column: 2; grid-row: 2; }
  .score-number strong { font-size: 65px; }
  .qa-search { grid-template-columns: 1fr; gap: 5px; }
  .qa-directory { grid-template-columns: 1fr 1fr; margin-bottom: 45px; }
  .qa-directory a { padding: 12px; font-size: 12px; }
  .qa-group { grid-template-columns: 1fr; gap: 20px; padding: 45px 0; }
  .qa-group > header { position: static; }
  .qa-group > header > span { font-size: 32px; }
  .qa-group > header h3 { font-size: 20px; }
  .qa-item summary { padding-right: 35px; font-size: 15px; }
  .qa-answer { padding-right: 0; }
  .myth summary { grid-template-columns: 35px 1fr 22px; gap: 10px; }
  .myth summary b { font-size: 16px; }
  .myth > div { margin-left: 45px; }
  footer { grid-template-columns: 1fr; padding: 55px 20px; }
  .footer-mark { font-size: 34px; }
  footer > p { justify-self: start; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
  .motion-ready .reveal { opacity: 1; transform: none; }
}

@media print {
  .reading-progress, .topbar, .hero-visual, .print-btn, .copy-btn, footer { display: none !important; }
  body, .workflow, .sources { color: #000; background: #fff; }
  .hero { min-height: 0; }
  .section { padding: 45px 20px; break-inside: avoid; }
  .score-result { box-shadow: none; }
  .motion-ready .reveal { opacity: 1; transform: none; }
}