:root {
  --paper: #ede9dc;
  --paper-deep: #ded7c5;
  --paper-light: #f7f3e8;
  --ink: #171714;
  --ink-soft: #4b4942;
  --muted: #7d796d;
  --line: rgba(23, 23, 20, .16);
  --gold: #a77924;
  --gold-light: #d5b773;
  --red: #8e2d23;
  --shadow: 0 24px 80px rgba(37, 31, 20, .12);
  --serif: "Songti SC", "STSong", "Noto Serif SC", Georgia, serif;
  --sans: "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--sans);
  line-height: 1.6;
  overflow-x: hidden;
}
button, input, textarea { font: inherit; }
a { color: inherit; text-decoration: none; }
[hidden] { display: none !important; }

.grain {
  position: fixed;
  inset: 0;
  z-index: 100;
  pointer-events: none;
  opacity: .17;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 160 160' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.25'/%3E%3C/svg%3E");
  mix-blend-mode: multiply;
}

.site-header {
  height: 76px;
  padding: 0 clamp(22px, 5vw, 72px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  background: color-mix(in srgb, var(--paper) 86%, transparent);
  border-bottom: 1px solid transparent;
  backdrop-filter: blur(12px);
  transition: border-color .3s, background .3s;
}
.site-header.scrolled { border-color: var(--line); }
.brand { display: inline-flex; align-items: center; gap: 12px; }
.brand-mark { font-size: 25px; color: var(--red); line-height: 1; }
.brand b { display: block; font: 700 22px/1 var(--serif); letter-spacing: .18em; }
.brand small { display: block; font-size: 8px; letter-spacing: .34em; margin-top: 5px; color: var(--muted); }
.desktop-nav { display: flex; gap: 42px; font-size: 13px; letter-spacing: .14em; }
.desktop-nav a { position: relative; }
.desktop-nav a::after { content: ""; position: absolute; height: 1px; left: 0; right: 100%; bottom: -8px; background: var(--red); transition: right .25s; }
.desktop-nav a:hover::after, .desktop-nav a:focus-visible::after { right: 0; }
.sound-toggle { border: 1px solid var(--line); background: transparent; border-radius: 999px; padding: 7px 13px; color: var(--ink-soft); font-size: 11px; letter-spacing: .13em; cursor: pointer; }

.hero {
  min-height: 100svh;
  padding: 150px clamp(24px, 8vw, 130px) 80px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(330px, .7fr);
  align-items: center;
  position: relative;
  isolation: isolate;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -3;
  background:
    linear-gradient(90deg, transparent 49.92%, rgba(23,23,20,.07) 50%, transparent 50.08%),
    linear-gradient(rgba(23,23,20,.025) 1px, transparent 1px);
  background-size: 100% 100%, 100% 42px;
}
.hero-copy { max-width: 760px; z-index: 2; }
.eyebrow { margin: 0 0 22px; color: var(--gold); font-size: 10px; font-weight: 700; letter-spacing: .24em; }
h1, h2, h3, p { margin-top: 0; }
.hero h1 { font: 600 clamp(58px, 8.6vw, 132px)/.97 var(--serif); letter-spacing: -.05em; margin: 0 0 38px; }
.hero h1 em { font-style: normal; color: transparent; -webkit-text-stroke: 1px var(--ink); }
.lead { max-width: 610px; color: var(--ink-soft); font: 18px/1.9 var(--serif); letter-spacing: .04em; }
.hero-actions { display: flex; align-items: center; gap: 34px; margin-top: 42px; }
.button { min-height: 50px; padding: 0 24px; border: 0; display: inline-flex; align-items: center; justify-content: space-between; gap: 35px; cursor: pointer; letter-spacing: .09em; transition: transform .25s, box-shadow .25s, background .25s; }
.button:hover { transform: translateY(-2px); box-shadow: 0 12px 30px rgba(23,23,20,.16); }
.button.primary { background: var(--red); color: #fffaf0; }
.button.ink { background: var(--ink); color: var(--paper-light); }
.button.gold { background: var(--gold); color: #fff; }
.button.red { background: #6f211b; color: #fff; }
.button.full { width: 100%; }
.text-link { font-size: 13px; border-bottom: 1px solid var(--ink); padding-bottom: 5px; }
.text-link span { margin-left: 16px; }
.hero-note { justify-self: end; align-self: end; margin-bottom: 80px; width: 240px; color: var(--ink-soft); font: 15px/1.8 var(--serif); position: relative; z-index: 2; }
.seal { display: grid; place-items: center; width: 48px; height: 48px; border: 2px solid var(--red); color: var(--red); font: 25px var(--serif); transform: rotate(-4deg); margin-bottom: 22px; }
.hero-note small { color: var(--muted); letter-spacing: .08em; }
.hero-orbit { position: absolute; right: -8vw; top: 50%; width: min(54vw, 760px); aspect-ratio: 1; transform: translateY(-50%); border: 1px solid rgba(23,23,20,.13); border-radius: 50%; z-index: -1; animation: orbit 90s linear infinite; }
.hero-orbit::before, .hero-orbit::after { content: ""; position: absolute; inset: 12%; border: 1px solid rgba(23,23,20,.11); border-radius: 50%; }
.hero-orbit::after { inset: 34%; background: var(--ink); box-shadow: 0 0 90px rgba(167,121,36,.2); }
.hero-orbit i { position: absolute; inset: 43%; z-index: 2; border-radius: 50%; background: var(--paper); }
.hero-orbit span { position: absolute; left: 50%; top: 50%; font: 26px var(--serif); color: rgba(23,23,20,.45); transform: translate(-50%,-50%) rotate(calc(var(--i) * 45deg)) translateY(-340px) rotate(calc(var(--i) * -45deg)); }
.hero-orbit span:nth-child(1){--i:0}.hero-orbit span:nth-child(2){--i:1}.hero-orbit span:nth-child(3){--i:2}.hero-orbit span:nth-child(4){--i:3}.hero-orbit span:nth-child(5){--i:4}.hero-orbit span:nth-child(6){--i:5}.hero-orbit span:nth-child(7){--i:6}.hero-orbit span:nth-child(8){--i:7}
.scroll-cue { position: absolute; bottom: 28px; left: clamp(24px,8vw,130px); display: flex; align-items: center; gap: 12px; font-size: 9px; letter-spacing: .2em; color: var(--muted); }
.scroll-cue span { width: 42px; height: 1px; background: var(--muted); position: relative; overflow: hidden; }
.scroll-cue span::after { content:""; position:absolute; inset:0; background:var(--red); animation: scan 2s ease infinite; }

.intro { padding: 130px clamp(24px, 8vw, 130px); display: grid; grid-template-columns: .35fr 1fr 1fr; gap: 70px; border-top: 1px solid var(--line); }
.section-index { font-size: 10px; letter-spacing: .19em; color: var(--muted); writing-mode: vertical-rl; }
.intro h2, .tools-heading h2 { font: 500 clamp(42px, 5vw, 72px)/1.15 var(--serif); margin-bottom: 0; }
.intro-body > p { max-width: 620px; color: var(--ink-soft); line-height: 2; }
.method-grid { display: grid; grid-template-columns: repeat(3, 1fr); margin-top: 48px; border-top: 1px solid var(--line); }
.method-grid div { padding: 24px 16px 0 0; }
.method-grid b { color: var(--red); font-size: 11px; }
.method-grid span { display: block; margin: 15px 0 5px; font: 21px var(--serif); }
.method-grid small { color: var(--muted); }

.tools-heading { padding: 120px 24px 80px; text-align: center; background: var(--ink); color: var(--paper); }
.tools-heading p:last-child { color: #aaa89f; }
.tool-section { min-height: 820px; display: grid; grid-template-columns: minmax(320px, .75fr) minmax(0, 1.25fr); border-bottom: 1px solid var(--line); }
.tool-meta { padding: 110px clamp(30px, 7vw, 110px); position: relative; overflow: hidden; }
.tool-meta > p:first-of-type { font-size: 9px; letter-spacing: .23em; color: var(--gold); margin-top: 32px; }
.tool-number { width: 52px; height: 52px; border: 1px solid var(--line); border-radius: 50%; display: grid; place-items: center; font: 20px var(--serif); }
.tool-meta h2 { font: 500 clamp(66px, 8vw, 118px)/1 var(--serif); margin: 26px 0 38px; }
.tool-intro { max-width: 400px; color: var(--ink-soft); font-family: var(--serif); line-height: 2; }
.vertical-word { position: absolute; right: -12px; bottom: -95px; font: 320px/1 var(--serif); color: rgba(23,23,20,.035); pointer-events: none; }
.tool-panel { padding: 90px clamp(24px, 7vw, 100px); display: flex; flex-direction: column; justify-content: center; background: var(--paper-light); border-left: 1px solid var(--line); }
.tool-personality .tool-meta { background: #e1ded2; }
.tool-life .tool-meta { background: #ded4ba; }
.tool-crisis .tool-meta { background: #d8cfc3; }

.ritual-form { max-width: 680px; width: 100%; margin: 0 auto; }
.ritual-form label > span, .ritual-form legend { display: block; margin-bottom: 10px; color: var(--muted); font-size: 10px; letter-spacing: .16em; text-transform: uppercase; }
.ritual-form textarea, .ritual-form input { width: 100%; border: 0; border-bottom: 1px solid rgba(23,23,20,.35); border-radius: 0; padding: 15px 0; background: transparent; color: var(--ink); outline: none; }
.ritual-form textarea { resize: vertical; font: 20px/1.75 var(--serif); }
.ritual-form textarea:focus, .ritual-form input:focus { border-color: var(--red); box-shadow: 0 1px var(--red); }
.number-row { display: grid; grid-template-columns: repeat(2, 1fr); gap: 34px; margin: 36px 0; }
.ritual-form fieldset { border: 0; padding: 0; margin: 32px 0; }
.radio { display: inline-flex; align-items: center; margin-right: 20px; cursor: pointer; }
.radio input { width: auto; margin-right: 8px; accent-color: var(--red); }
.radio span { margin: 0 !important; color: var(--ink) !important; }
.form-note { text-align: center; margin: 14px 0 0; color: var(--muted); font-size: 11px; }

.result-card { max-width: 820px; width: 100%; margin: 26px auto 0; padding: clamp(25px, 5vw, 50px); background: #f5f0e3; border: 1px solid var(--line); box-shadow: var(--shadow); animation: rise .6s ease both; }
.result-head { display: flex; justify-content: space-between; gap: 25px; padding-bottom: 26px; border-bottom: 1px solid var(--line); }
.result-kicker { color: var(--red); font-size: 10px; letter-spacing: .2em; }
.result-head h3 { font: 500 clamp(28px,4vw,48px)/1.15 var(--serif); margin: 7px 0 0; }
.hexagram-glyph { font-size: 70px; letter-spacing: -.2em; color: var(--ink); min-width: 100px; text-align: right; }
.result-summary { margin: 30px 0; color: var(--ink-soft); font: 17px/1.9 var(--serif); }
.signal-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.signal-grid > div { padding: 20px; background: var(--paper-light); }
.signal-grid small { display:block; color: var(--muted); font-size: 9px; letter-spacing: .13em; margin-bottom: 8px; }
.signal-grid b { font-family: var(--serif); font-size: 18px; }
.trace { margin-top: 24px; padding-top: 20px; border-top: 1px dashed var(--line); color: var(--muted); font-size: 11px; line-height: 1.9; }
.element-bars { display: grid; gap: 12px; margin: 28px 0; }
.element-row { display:grid; grid-template-columns: 30px 1fr 45px; align-items:center; gap:12px; font-size:12px; }
.bar { height: 7px; background: var(--paper-deep); overflow:hidden; }
.bar i { display:block; height:100%; background: var(--gold); transform-origin:left; animation: widen .9s ease both; }
.dimension-list { display: grid; grid-template-columns: 1fr 1fr; gap: 15px 25px; margin-top: 30px; }
.dimension { display: grid; grid-template-columns: 70px 1fr 30px; align-items:center; gap:8px; font-size:11px; }
.dimension .bar i { background: var(--ink); }
.chart-tabs { display:flex; gap:8px; flex-wrap:wrap; margin:25px 0 15px; }
.chart-tabs button { border:1px solid var(--line); background:transparent; padding:7px 13px; cursor:pointer; font-size:11px; }
.chart-tabs button.active { background:var(--ink); color:var(--paper); }
.life-chart { width:100%; height:auto; overflow:visible; }
.life-chart .grid-line { stroke:rgba(23,23,20,.1); stroke-width:1; }
.life-chart .trend-line { fill:none; stroke:var(--red); stroke-width:3; stroke-linecap:round; stroke-linejoin:round; }
.life-chart .area { fill:url(#areaFill); }
.life-chart .dot { fill:var(--paper-light); stroke:var(--red); stroke-width:2; }
.life-chart text { fill:var(--muted); font-size:9px; font-family:var(--sans); }
.year-insight { margin-top:18px; padding:18px 20px; border-left:3px solid var(--gold); background:rgba(167,121,36,.07); color:var(--ink-soft); font-size:13px; }
.crisis-list { display:grid; gap:14px; margin-top:26px; }
.crisis-item { display:grid; grid-template-columns:70px 90px 1fr; gap:20px; align-items:center; padding:18px 0; border-bottom:1px solid var(--line); }
.crisis-age { font:36px/1 var(--serif); }
.severity { padding:5px 9px; font-size:9px; letter-spacing:.12em; text-align:center; border:1px solid; }
.severity.high { color:var(--red); border-color:var(--red); }
.severity.mid { color:var(--gold); border-color:var(--gold); }
.severity.low { color:var(--muted); border-color:var(--muted); }
.crisis-item p { margin:0; color:var(--ink-soft); font-size:12px; }

.closing { min-height: 680px; padding: 130px 24px; text-align: center; display:flex; flex-direction:column; align-items:center; justify-content:center; background:var(--ink); color:var(--paper); position:relative; overflow:hidden; }
.closing-symbol { position:absolute; font:500px/1 var(--serif); color:rgba(237,233,220,.025); }
.closing h2 { position:relative; font:500 clamp(38px,6vw,78px)/1.35 var(--serif); max-width:1000px; }
.closing .button { position:relative; margin-top:25px; }
footer { padding:50px clamp(24px,6vw,80px); display:grid; grid-template-columns:1fr 1fr 2fr 1fr; gap:30px; align-items:end; border-top:1px solid rgba(255,255,255,.08); background:var(--ink); color:#b4b0a4; font-size:11px; }
.footer-brand { color:var(--paper); }
.disclaimer { max-width:460px; }

.reveal { opacity: 1; transform: none; transition: opacity .8s ease, transform .8s ease; }
.delay-1 { transition-delay:.15s; }
@keyframes orbit { to { transform:translateY(-50%) rotate(360deg); } }
@keyframes scan { from{transform:translateX(-100%)} to{transform:translateX(100%)} }
@keyframes rise { from{opacity:0;transform:translateY(16px)} }
@keyframes widen { from{transform:scaleX(0)} }

@media (max-width: 900px) {
  .desktop-nav { display:none; }
  .hero { grid-template-columns:1fr; padding-top:130px; }
  .hero-orbit { width:720px; right:-430px; opacity:.55; }
  .hero-note { justify-self:start; margin:60px 0 50px; }
  .intro { grid-template-columns:1fr; gap:35px; }
  .section-index { writing-mode:horizontal-tb; }
  .tool-section { grid-template-columns:1fr; }
  .tool-meta { padding-top:80px; padding-bottom:80px; min-height:480px; }
  .tool-panel { border-left:0; border-top:1px solid var(--line); padding-top:70px; padding-bottom:70px; }
  footer { grid-template-columns:1fr 1fr; }
}

@media (min-width: 901px) {
  .reveal { opacity: 0; transform: translateY(24px); }
  .reveal.visible { opacity:1; transform:none; }
}

@media (max-width: 600px) {
  .site-header { height:64px; }
  .brand b { font-size:18px; }
  .sound-toggle { display:block; position:absolute; right:16px; padding:6px 9px; }
  .hero { padding-left:22px; padding-right:22px; }
  .hero h1 { font-size:57px; }
  .lead { font-size:16px; }
  .hero-actions { align-items:flex-start; flex-direction:column; gap:22px; }
  .hero-note { margin-bottom:70px; }
  .scroll-cue { left:22px; }
  .intro { padding:90px 22px; }
  .method-grid { grid-template-columns:1fr; }
  .tool-meta { padding:70px 24px; }
  .tool-panel { padding:55px 20px; }
  .number-row, .dimension-list { grid-template-columns:1fr; }
  .signal-grid { grid-template-columns:1fr; }
  .result-card { padding:24px 20px; }
  .hexagram-glyph { font-size:45px; }
  .crisis-item { grid-template-columns:60px 72px 1fr; gap:10px; }
  footer { grid-template-columns:1fr; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior:auto !important; animation-duration:.01ms !important; animation-iteration-count:1 !important; transition-duration:.01ms !important; }
}