:root {
  --ink: #142230;
  --ink-soft: #52606d;
  --night: #07131f;
  --night-2: #0d2033;
  --paper: #f5f2eb;
  --paper-2: #ebe6dc;
  --white: #fffdf7;
  --cyan: #76d7db;
  --violet: #8e8ff2;
  --gold: #f1ba6b;
  --sage: #8ead9d;
  --danger: #a75043;
  --line: rgba(20, 34, 48, .13);
  --shadow: 0 22px 60px rgba(9, 22, 34, .12);
  --shadow-dark: 0 30px 80px rgba(0, 0, 0, .35);
  --radius: 28px;
  --header-h: 76px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Microsoft YaHei UI", "PingFang SC", "Noto Sans CJK SC", system-ui, sans-serif;
  line-height: 1.7;
  overflow-x: hidden;
}
body.nav-open { overflow: hidden; }
button, input, textarea, select { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button { cursor: pointer; }
a { color: inherit; }
img { display: block; max-width: 100%; }
h1, h2, h3, blockquote { text-wrap: balance; word-break: auto-phrase; }
[hidden] { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; }
.skip-link { position: fixed; top: 10px; left: 10px; z-index: 999; padding: 10px 16px; background: #fff; transform: translateY(-150%); }
.skip-link:focus { transform: translateY(0); }

.site-header {
  position: fixed; inset: 0 0 auto; z-index: 50; height: var(--header-h);
  display: flex; align-items: center; justify-content: space-between; padding: 0 clamp(18px, 4vw, 64px);
  color: white; background: linear-gradient(to bottom, rgba(4,13,22,.88), rgba(4,13,22,.08));
  transition: background .3s, backdrop-filter .3s, color .3s;
}
.site-header.scrolled, body:not(.home-active) .site-header { background: rgba(7,19,31,.92); backdrop-filter: blur(16px); }
.brand { display: flex; gap: 12px; align-items: center; text-decoration: none; }
.brand b { display: block; font-family: "Songti SC", "STSong", "Noto Serif CJK SC", serif; letter-spacing: .08em; }
.brand small { display: block; opacity: .55; font-size: 9px; letter-spacing: .24em; }
.brand-symbol { width: 42px; height: 42px; flex: 0 0 auto; color: var(--gold); filter: drop-shadow(0 8px 18px rgba(241,186,107,.18)); }
.brand-symbol--small { width: 34px; height: 34px; }
.primary-nav { display: flex; gap: 8px; align-items: center; }
.primary-nav a { padding: 10px 16px; border-radius: 999px; text-decoration: none; font-size: 14px; color: rgba(255,255,255,.76); }
.primary-nav a:hover, .primary-nav a.active { color: white; background: rgba(255,255,255,.1); }
.menu-button { display: none; width: 46px; height: 46px; border: 0; border-radius: 50%; background: rgba(255,255,255,.1); }
.menu-button span:not(.sr-only) { display: block; width: 20px; height: 1px; margin: 5px auto; background: white; }

.view { min-height: 80vh; }
.shell { width: min(1180px, calc(100% - 40px)); margin-inline: auto; }
.narrow { width: min(760px, calc(100% - 40px)); margin-inline: auto; }
.section { padding: clamp(76px, 10vw, 140px) 0; position: relative; }
.eyebrow { margin: 0 0 12px; color: #527c7f; font-size: 12px; font-weight: 700; letter-spacing: .2em; text-transform: uppercase; }
.eyebrow--light { color: var(--cyan); }
.display-title, .section-title { margin: 0; font-family: "Songti SC", "STSong", "Noto Serif CJK SC", serif; line-height: 1.24; letter-spacing: -.03em; }
.display-title { max-width: 980px; color: white; font-size: clamp(46px, 5.7vw, 82px); line-height:1.18; text-shadow: 0 10px 40px rgba(0,0,0,.28); }
.title-line { display:block; white-space:nowrap; }
.section-title { max-width: 900px; font-size: clamp(32px, 3.6vw, 54px); }
.lede { max-width: 700px; color: var(--ink-soft); font-size: clamp(17px, 2vw, 21px); }
.lede--light { color: rgba(255,255,255,.72); }
.section-heading { display: grid; gap: 18px; margin-bottom: 42px; }
.section-heading--split { grid-template-columns: minmax(0,1fr) minmax(260px,.65fr); align-items: end; }

.btn { display: inline-flex; min-height: 48px; align-items: center; justify-content: center; gap: 9px; padding: 12px 22px; border: 1px solid transparent; border-radius: 999px; font-weight: 650; text-decoration: none; white-space:nowrap; transition: transform .2s, box-shadow .2s, background .2s; }
.btn:hover { transform: translateY(-2px); }
.btn--primary { color: #07131f; background: linear-gradient(135deg, #d7f2ec, var(--gold)); box-shadow: 0 12px 30px rgba(241,186,107,.24); }
.btn--dark { color: white; background: var(--night); }
.btn--ghost { color: white; border-color: rgba(255,255,255,.28); background: rgba(255,255,255,.06); backdrop-filter: blur(9px); }
.btn--soft { color: var(--ink); border-color: var(--line); background: rgba(255,255,255,.6); }
.btn--danger { color: var(--danger); border-color: rgba(167,80,67,.25); background: #fff6f3; }
.actions { display: flex; gap: 12px; flex-wrap: wrap; }

.hero { min-height: 100svh; position: relative; display: grid; align-items: end; color: white; background: var(--night); overflow: hidden; }
.hero__image { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: center; }
.hero::after { content: ''; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(2,9,16,.86) 0%, rgba(2,9,16,.5) 42%, rgba(2,9,16,.04) 74%), linear-gradient(to top, rgba(4,13,22,.9), transparent 55%); }
.hero__content { position: relative; z-index: 2; padding: calc(var(--header-h) + 70px) 0 80px; }
.hero__copy { max-width: 770px; margin: 26px 0 34px; font-size: clamp(17px, 2vw, 22px); color: rgba(255,255,255,.78); }
.hero__meta { margin-top: 46px; display: flex; gap: 36px; color: rgba(255,255,255,.58); font-size: 13px; }
.hero__meta strong { display: block; color: white; font-size: 21px; font-family: "Songti SC", "STSong", serif; }
.scroll-cue { position: absolute; right: clamp(18px, 4vw, 64px); bottom: 70px; z-index: 3; writing-mode: vertical-rl; font-size: 11px; letter-spacing: .25em; color: rgba(255,255,255,.55); }

.truth-strip { background: var(--night); color: white; border-top: 1px solid rgba(255,255,255,.08); }
.truth-grid { display: grid; grid-template-columns: .8fr 1.2fr; min-height: 580px; }
.truth-image { position: relative; min-height: 420px; overflow: hidden; }
.truth-image img { width: 100%; height: 100%; object-fit: cover; }
.truth-image::after { content:''; position:absolute; inset:0; background:linear-gradient(90deg, transparent, var(--night)); }
.truth-copy { display: grid; align-content: center; padding: clamp(44px, 7vw, 100px); }
.truth-copy blockquote { margin: 0; font-family: "Songti SC", "STSong", serif; font-size: clamp(28px, 3.6vw, 54px); line-height: 1.5; }
.truth-copy p { color: rgba(255,255,255,.58); }

.editor-note { padding: 48px 0; color: white; background: #07131f; border-top: 1px solid rgba(255,255,255,.08); }
.editor-note__grid { display: grid; grid-template-columns: .5fr 1.35fr .8fr; gap: clamp(28px,5vw,74px); align-items: start; }
.editor-note__lead { margin: 0; font: clamp(23px,2.6vw,36px)/1.55 "Songti SC","STSong",serif; }
.editor-note__lead b { color: var(--gold); font-weight: 500; }
.editor-note__grid > p:last-child { margin: 0; color: rgba(255,255,255,.55); }

.pattern-lab { background: linear-gradient(180deg,#f5f2eb,#ebe5da); }
.pattern-lab__layout { display: grid; grid-template-columns: .72fr 1.28fr; gap: 24px; }
.pattern-tabs { display: grid; align-content: start; gap: 8px; }
.pattern-tab { display: grid; grid-template-columns: 42px 1fr; gap: 14px; align-items: center; min-height: 72px; padding: 13px 18px; border: 1px solid transparent; border-radius: 16px; color: #52606d; background: transparent; text-align: left; }
.pattern-tab span { color: #929a96; font: 13px/1 Georgia,serif; letter-spacing: .1em; }
.pattern-tab.active { color: white; background: var(--night); box-shadow: 0 16px 40px rgba(7,19,31,.16); }
.pattern-tab.active span { color: var(--gold); }
.pattern-result { min-height: 490px; padding: clamp(28px,5vw,58px); border-radius: 30px; color: white; background: radial-gradient(circle at 88% 8%,rgba(118,215,219,.18),transparent 32%),#10283a; box-shadow: var(--shadow-dark); }
.pattern-result h3 { max-width: 620px; margin: 8px 0 30px; font: clamp(31px,4vw,52px)/1.28 "Songti SC","STSong",serif; }
.pattern-result dl { margin: 0; }
.pattern-result dl > div { display: grid; grid-template-columns: 110px 1fr; gap: 20px; padding: 17px 0; border-top: 1px solid rgba(255,255,255,.12); }
.pattern-result dt { color: var(--gold); font-size: 13px; }
.pattern-result dd { margin: 0; color: rgba(255,255,255,.72); }
.pattern-experiment { margin-top: 28px; padding: 20px 22px; border-radius: 18px; color: var(--ink); background: var(--gold); }
.pattern-experiment small { font-weight: 800; letter-spacing: .12em; }
.pattern-experiment p { margin: 6px 0 0; font-family: "Songti SC","STSong",serif; font-size: 19px; }

.limits-lab { padding: clamp(76px,10vw,130px) 0; color: white; background: #081a28; }
.limits-lab__grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: clamp(40px,8vw,100px); align-items: center; }
.limits-copy h2 { max-width: 720px; margin: 0; font: clamp(34px,4.5vw,62px)/1.25 "Songti SC","STSong",serif; }
.limits-copy > p { max-width: 690px; color: rgba(255,255,255,.63); }
.time-fields { display: grid; gap: 23px; margin-top: 40px; }
.time-fields label { display: grid; grid-template-columns: 1fr auto; gap: 9px; color: rgba(255,255,255,.72); font-size: 14px; }
.time-fields label span { color: var(--gold); }
.time-fields input { grid-column: 1/-1; width: 100%; accent-color: var(--gold); }
.time-result { min-height: 440px; display: flex; flex-direction: column; justify-content: center; padding: clamp(30px,5vw,56px); border: 1px solid rgba(255,255,255,.12); border-radius: 50% 50% 24px 24px; text-align: center; background: radial-gradient(circle at 50% 12%,rgba(241,186,107,.18),transparent 42%); }
.time-result > span,.time-result > small { color: rgba(255,255,255,.55); }
.time-result > strong { color: var(--gold); font: clamp(76px,11vw,132px)/1 Georgia,serif; }
.time-result > small { text-transform: uppercase; letter-spacing: .16em; }
.time-rule { width: 50px; height: 1px; margin: 30px auto 18px; background: rgba(255,255,255,.25); }
.time-result p { margin: 0; font-family: "Songti SC","STSong",serif; font-size: 19px; }
.time-result em { margin-top: 20px; color: rgba(255,255,255,.42); font-size: 12px; font-style: normal; }

.insight-section { background: #fffdf8; }
.insight-list { border-top: 1px solid var(--line); }
.insight-item { border-bottom: 1px solid var(--line); }
.insight-item summary { display: grid; grid-template-columns: 70px 1fr auto; gap: 20px; align-items: center; padding: 28px 4px; cursor: pointer; list-style: none; }
.insight-item summary::-webkit-details-marker { display: none; }
.insight-item summary > span { color: #9a8b72; font: 16px/1 Georgia,serif; }
.insight-item summary h3 { margin: 0; font: clamp(23px,3vw,34px)/1.35 "Songti SC","STSong",serif; }
.insight-item summary i { width: 36px; height: 36px; display: grid; place-items: center; border: 1px solid var(--line); border-radius: 50%; font-style: normal; transition: transform .2s; }
.insight-item[open] summary i { transform: rotate(45deg); }
.insight-body { display: grid; grid-template-columns: 1fr .8fr; gap: 40px; padding: 0 60px 34px 94px; }
.insight-body > p { margin: 0; color: #485760; font-size: 18px; }
.insight-body > div { padding-left: 20px; border-left: 2px solid var(--gold); }
.insight-body small,.insight-body b { display: block; }
.insight-body small { color: #8a7760; }
.insight-body cite { grid-column: 1/-1; color: #8b918e; font-size: 12px; font-style: normal; }

.shelf-section { background: #e9e3d8; overflow: hidden; }
.book-shelf { display: grid; grid-template-columns: repeat(6,minmax(175px,1fr)); gap: 12px; align-items: end; overflow-x: auto; padding: 18px 2px 32px; scrollbar-width: thin; }
.book { min-height: 390px; display: flex; flex-direction: column; justify-content: space-between; padding: 22px; border-radius: 8px 20px 20px 8px; color: white; box-shadow: 7px 12px 24px rgba(45,36,24,.16),inset 5px 0 rgba(0,0,0,.1); }
.book > span { opacity: .55; font: 13px/1 Georgia,serif; }
.book h3 { margin: 0 0 7px; font: 29px/1.35 "Songti SC","STSong",serif; }
.book small { opacity: .6; }
.book p { margin-bottom: 0; font-size: 14px; opacity: .82; }
.book--amber { background:#9a5e38; }.book--cyan{background:#286b70}.book--violet{background:#545484}.book--rose{background:#86545c}.book--sage{background:#496b5b}.book--blue{background:#314f6d}

.path-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.path-card { position: relative; min-height: 430px; padding: 28px; overflow: hidden; border-radius: var(--radius); color: white; background: var(--night-2); box-shadow: var(--shadow); isolation: isolate; }
.path-card__image { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; z-index: -2; }
.path-card::after { content:''; position:absolute; inset:0; z-index:-1; background:linear-gradient(to top, rgba(5,17,28,.96), rgba(5,17,28,.1) 75%); }
.path-card__icon { width: 52px; height: 52px; padding: 11px; border-radius: 16px; background: rgba(255,255,255,.13); backdrop-filter: blur(10px); }
.path-card__content { position: absolute; left: 28px; right: 28px; bottom: 28px; }
.path-card h3 { margin: 0 0 8px; font-family: "Songti SC", "STSong", serif; font-size: 25px; }
.path-card p { margin: 0 0 12px; color: rgba(255,255,255,.72); }
.path-card small { color: var(--gold); }
.path-card button { position: absolute; inset: 0; width: 100%; border: 0; background: transparent; color: transparent; }
.path-card:focus-within { outline: 3px solid var(--cyan); outline-offset: 4px; }

.journey { color: white; background: #091827; overflow: hidden; }
.journey-steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; margin-top: 54px; background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.1); border-radius: var(--radius); overflow: hidden; }
.journey-step { position: relative; padding: 42px 32px; background: rgba(255,255,255,.035); }
.journey-step b { color: var(--gold); font-size: 12px; letter-spacing: .18em; }
.journey-step h3 { margin: 16px 0 10px; font-family: "Songti SC", "STSong", serif; font-size: 27px; }
.journey-step p { color: rgba(255,255,255,.63); }
.journey-step img { width: 68px; height: 68px; margin-bottom: 30px; }

.quote-stage { min-height: 650px; display: grid; place-items: center; color: white; background: var(--night); position: relative; overflow: hidden; }
.quote-stage__image { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: .55; }
.quote-stage::after { content:''; position:absolute; inset:0; background:radial-gradient(circle at center, rgba(7,19,31,.1), rgba(7,19,31,.78)); }
.quote-card { position: relative; z-index: 2; width: min(860px, calc(100% - 40px)); text-align: center; }
.quote-mark { color: var(--gold); font: 80px/1 Georgia,serif; }
.quote-text { min-height: 150px; margin: 0; font-family: "Songti SC", "STSong", serif; font-size: clamp(29px, 4.2vw, 58px); line-height: 1.55; }
.quote-controls { display:flex; align-items:center; justify-content:center; gap:12px; margin-top: 34px; }
.icon-button { width: 48px; height: 48px; display:grid; place-items:center; border: 1px solid rgba(255,255,255,.28); border-radius:50%; color:white; background:rgba(0,0,0,.2); }
.quote-count { min-width: 68px; font-size: 12px; letter-spacing: .12em; color: rgba(255,255,255,.55); }

.preview-wrap { display: grid; grid-template-columns: .75fr 1.25fr; gap: 50px; align-items: center; }
.action-card-preview, .action-card { border-radius: 30px; overflow: hidden; background: #fffdf8; box-shadow: var(--shadow); }
.card-art { position: relative; height: 190px; overflow: hidden; color: white; }
.card-art img { width: 100%; height: 100%; object-fit: cover; }
.card-art::after { content:''; position:absolute; inset:0; background:linear-gradient(to top, rgba(8,19,31,.76), transparent); }
.card-art span { position:absolute; z-index:2; left:26px; bottom:22px; font-size:12px; letter-spacing:.16em; }
.card-body { padding: 28px; }
.card-row { padding: 18px 0; border-bottom: 1px solid var(--line); }
.card-row:last-child { border-bottom: 0; }
.card-row small { display:block; color:#7a847f; margin-bottom:5px; }
.card-row strong { font-family:"Songti SC", "STSong", serif; font-size:19px; }

.page-hero { padding: calc(var(--header-h) + 80px) 0 72px; color:white; background: radial-gradient(circle at 80% 10%, rgba(118,215,219,.18), transparent 28%), linear-gradient(135deg,var(--night),#122b42); }
.page-hero h1 { margin:0; max-width:920px; font-family:"Songti SC", "STSong", serif; font-size:clamp(38px,5vw,68px); line-height:1.24; }
.page-hero p { max-width:710px; color:rgba(255,255,255,.68); font-size:18px; }
.page-hero__meta { display:flex; gap:24px; flex-wrap:wrap; margin-top:30px; }
.page-hero__meta span { display:flex; align-items:center; gap:8px; font-size:13px; color:rgba(255,255,255,.68); }
.page-hero__meta img { width:26px; height:26px; }

.library-tools { position: sticky; top: var(--header-h); z-index:10; padding:18px 0; background:rgba(245,242,235,.92); backdrop-filter:blur(12px); border-bottom:1px solid var(--line); }
.search-row { display:flex; gap:12px; align-items:center; }
.search-box { flex:1; min-height:50px; padding:0 18px; border:1px solid var(--line); border-radius:16px; color:var(--ink); background:white; }
.chips { display:flex; gap:8px; margin-top:12px; overflow-x:auto; scrollbar-width:none; }
.chip { flex:0 0 auto; min-height:38px; padding:8px 14px; border:1px solid var(--line); border-radius:999px; color:var(--ink-soft); background:transparent; }
.chip.active { color:white; background:var(--night); border-color:var(--night); }
.article-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:22px; }
.article-card { overflow:hidden; border:1px solid var(--line); border-radius:24px; background:rgba(255,255,255,.54); transition:transform .2s,box-shadow .2s; }
.article-card:hover { transform:translateY(-5px); box-shadow:var(--shadow); }
.article-card__image { position:relative; height:210px; overflow:hidden; }
.article-card__image > img:first-child { width:100%; height:100%; object-fit:cover; }
.article-card__icon { position:absolute; left:18px; bottom:18px; width:48px; height:48px; padding:10px; border-radius:15px; background:rgba(255,255,255,.86); }
.article-card__body { padding:24px; }
.article-card__body small { color:#64898a; }
.article-card h3 { margin:8px 0; font-family:"Songti SC", "STSong", serif; font-size:23px; line-height:1.45; }
.article-card p { color:var(--ink-soft); font-size:14px; }
.article-card button { width:100%; min-height:44px; margin-top:12px; border:0; border-top:1px solid var(--line); color:var(--ink); background:transparent; text-align:left; }
.article-page { padding-top:calc(var(--header-h) + 52px); background:#fffdf8; }
.article-detail { width:min(920px,calc(100% - 32px)); margin:0 auto; }
.article-detail__back { margin-bottom:28px; }
.article-detail__hero { height:min(52vw,390px); border-radius:28px; overflow:hidden; }
.article-detail__hero img { width:100%; height:100%; object-fit:cover; }
.article-detail h2 { font-family:"Songti SC", "STSong", serif; font-size:clamp(34px,5vw,58px); line-height:1.3; }
.article-header { max-width:780px; margin:42px auto 70px; }
.article-deck { color:#52606d; font:clamp(19px,2.2vw,24px)/1.85 "Songti SC","STSong",serif; }
.article-pull { max-width:840px; margin:70px auto; padding:10px 0 10px 35px; border-left:4px solid var(--gold); font:clamp(29px,4vw,48px)/1.55 "Songti SC","STSong",serif; }
.article-prose { max-width:780px; margin:0 auto; }
.article-detail__section { display:grid; grid-template-columns:70px 1fr; gap:20px; margin:54px 0; }
.section-number { padding-top:8px; color:#a68c68; font:14px/1 Georgia,serif; }
.article-detail__section h3 { font-family:"Songti SC", "STSong", serif; font-size:26px; }
.article-detail__section p { font-size:18px; line-height:2; color:#344553; }
.case-study { margin:80px 0; padding:clamp(28px,6vw,64px); border-radius:32px; color:white; background:#10283a; }
.case-study h3 { margin:5px 0 20px; font:clamp(28px,4vw,44px)/1.4 "Songti SC","STSong",serif; }
.case-study > p:last-child { color:rgba(255,255,255,.7); font-size:18px; line-height:2; }
.field-notes { display:grid; grid-template-columns:.75fr 1.25fr; gap:50px; margin:80px 0; padding:45px 0; border-block:1px solid var(--line); }
.field-notes h3 { margin:0; font:32px/1.45 "Songti SC","STSong",serif; }
.field-notes ol { margin:0; padding:0; list-style:none; counter-reset:note; }
.field-notes li { counter-increment:note; padding:16px 0; border-bottom:1px solid var(--line); font-size:18px; }
.field-notes li::before { content:'0' counter(note); margin-right:18px; color:#a68c68; font-family:Georgia,serif; }
.article-next { margin:70px 0; padding:36px; border-radius:26px; background:#eee8dc; }
.article-next h3 { margin-top:0; font:30px/1.4 "Songti SC","STSong",serif; }
.article-sources { margin-top:50px; padding-top:24px; border-top:1px solid var(--line); }
.article-sources summary { cursor:pointer; font-weight:700; }
.article-sources .source-list { margin-top:20px; }
.source-list { display:grid; gap:10px; }
.source-list a { color:#356e74; }

.guide-layout { display:grid; grid-template-columns:320px minmax(0,720px); gap:60px; align-items:start; }
.guide-sidebar { position:sticky; top:calc(var(--header-h) + 32px); }
.progress-ring { --progress: 0deg; width:150px; height:150px; display:grid; place-items:center; margin-bottom:24px; border-radius:50%; background:conic-gradient(var(--gold) var(--progress), rgba(20,34,48,.08) 0); position:relative; }
.progress-ring::before { content:''; position:absolute; inset:10px; border-radius:50%; background:var(--paper); }
.progress-ring strong { position:relative; font-size:30px; }
.step-list { list-style:none; padding:0; margin:0; }
.step-list li { display:flex; gap:12px; align-items:center; padding:8px 0; color:#7d8788; font-size:13px; }
.step-list li.active { color:var(--ink); font-weight:700; }
.step-dot { width:10px; height:10px; border-radius:50%; background:#d2cdc2; }
.step-list li.active .step-dot, .step-list li.done .step-dot { background:var(--gold); }
.guide-panel { padding:clamp(26px,5vw,52px); border:1px solid var(--line); border-radius:30px; background:rgba(255,255,255,.67); box-shadow:var(--shadow); }
.guide-panel__icon { width:72px; height:72px; padding:14px; border-radius:20px; background:#eef4f0; }
.guide-panel h2 { margin:24px 0 8px; font-family:"Songti SC", "STSong", serif; font-size:clamp(30px,4vw,46px); }
.guide-prompt { font-size:18px; color:#3c4c56; }
.guide-example { margin:22px 0; padding:16px 18px; border-left:3px solid var(--gold); color:#68736e; background:#f4eee3; font-size:14px; }
.field { display:grid; gap:8px; margin:24px 0; }
.field label { font-weight:700; }
.field textarea, .field input, .field select { width:100%; min-height:52px; padding:14px 16px; border:1px solid #cfc9bd; border-radius:15px; color:var(--ink); background:white; }
.field textarea { min-height:150px; resize:vertical; }
.field textarea:focus, .field input:focus, .field select:focus { outline:3px solid rgba(118,215,219,.35); border-color:#5aa6aa; }
.guide-nav { display:flex; justify-content:space-between; gap:12px; margin-top:28px; }
.mode-picker { display:grid; grid-template-columns:repeat(2,1fr); gap:18px; margin-top:36px; }
.mode-card { padding:26px; border:1px solid var(--line); border-radius:24px; background:white; text-align:left; }
.mode-card:hover { border-color:#5aa6aa; }
.mode-card h3 { font-family:"Songti SC", "STSong", serif; font-size:24px; }

.empty-state { padding:70px 30px; border:1px dashed #b9b3a7; border-radius:30px; text-align:center; background:rgba(255,255,255,.4); }
.empty-state img { width:90px; height:90px; margin:0 auto 20px; }
.empty-state h2 { font-family:"Songti SC", "STSong", serif; font-size:34px; }
.dashboard-grid { display:grid; grid-template-columns:1.1fr .9fr; gap:24px; align-items:start; }
.dashboard-stack { display:grid; gap:24px; }
.panel { padding:28px; border:1px solid var(--line); border-radius:26px; background:rgba(255,255,255,.62); }
.panel h2, .panel h3 { margin-top:0; font-family:"Songti SC", "STSong", serif; }
.today-action { padding:24px; border-radius:20px; color:white; background:linear-gradient(135deg,#15384a,#315c63); }
.today-action small { color:rgba(255,255,255,.62); }
.today-action p { font-family:"Songti SC", "STSong", serif; font-size:22px; }
.check-row { display:grid; grid-template-columns:repeat(3,1fr); gap:10px; }
.check-choice { min-height:48px; border:1px solid var(--line); border-radius:14px; background:white; }
.check-choice.active { color:white; background:var(--night); }
.timeline { display:grid; gap:12px; margin-top:20px; }
.timeline-item { display:grid; grid-template-columns:84px 1fr; gap:14px; padding:13px 0; border-bottom:1px solid var(--line); }
.timeline-item time { color:#74807b; font-size:12px; }
.timeline-item p { margin:0; }
.data-actions { display:flex; gap:10px; flex-wrap:wrap; }
.privacy-note { font-size:13px; color:#6e7975; }
.review-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:14px; }
.review-stat { padding:18px; border-radius:18px; background:#eef2ed; }
.review-stat strong { display:block; font-size:26px; }

.site-footer { min-height:200px; display:grid; grid-template-columns:.8fr 1.2fr auto; align-items:center; gap:30px; padding:50px clamp(20px,5vw,80px); color:white; background:#06101a; }
.site-footer > div:first-child { display:flex; gap:12px; align-items:center; }
.site-footer p { color:rgba(255,255,255,.55); }
.footer-links { display:flex; gap:8px; }
.footer-links button { border:0; color:rgba(255,255,255,.7); background:transparent; }
.toast { position:fixed; z-index:100; left:50%; bottom:max(24px,env(safe-area-inset-bottom)); transform:translate(-50%,140%); max-width:calc(100% - 32px); padding:12px 18px; border-radius:999px; color:white; background:#162a35; box-shadow:var(--shadow-dark); transition:transform .25s; }
.toast.show { transform:translate(-50%,0); }

@media (max-width: 900px) {
  :root { --header-h: 68px; }
  .menu-button { display:block; }
  .primary-nav { position:fixed; inset:var(--header-h) 0 0; display:grid; align-content:start; gap:4px; padding:24px; background:rgba(7,19,31,.98); transform:translateX(100%); transition:transform .25s; }
  .nav-open .primary-nav { transform:translateX(0); }
  .primary-nav a { min-height:54px; display:flex; align-items:center; font-size:18px; }
  .truth-grid, .preview-wrap, .guide-layout, .dashboard-grid, .site-footer, .editor-note__grid, .limits-lab__grid { grid-template-columns:1fr; }
  .truth-copy { order:-1; }
  .truth-image::after { background:linear-gradient(to bottom,var(--night),transparent 25%); }
  .path-grid, .article-grid { grid-template-columns:repeat(2,1fr); }
  .journey-steps { grid-template-columns:1fr; }
  .section-heading--split { grid-template-columns:1fr; }
  .pattern-lab__layout { grid-template-columns:1fr; }
  .pattern-tabs { grid-template-columns:repeat(2,1fr); }
  .book-shelf { grid-template-columns:repeat(6,210px); }
  .guide-sidebar { position:static; display:flex; gap:24px; align-items:center; }
  .progress-ring { flex:0 0 108px; width:108px; height:108px; margin:0; }
  .step-list { display:none; }
  .site-footer { text-align:center; }
  .site-footer > div, .footer-links { justify-content:center; }
}

@media (max-width: 620px) {
  .shell, .narrow { width:min(100% - 28px, 1180px); }
  .brand small { display:none; }
  .brand-symbol { width:36px; height:36px; }
  .hero { min-height:900px; }
  .hero__image { object-position:62% center; }
  .hero::after { background:linear-gradient(to top,rgba(2,9,16,.96) 0%,rgba(2,9,16,.58) 64%,rgba(2,9,16,.2)); }
  .hero__content { padding-bottom:110px; }
  .display-title { max-width:none; font-size:clamp(31px,10vw,48px); line-height:1.28; letter-spacing:-.045em; }
  .hero__meta { gap:22px; }
  .scroll-cue { display:none; }
  .section { padding:74px 0; }
  .path-grid, .article-grid { grid-template-columns:1fr; }
  .editor-note { padding:34px 0; }
  .pattern-tabs { grid-template-columns:1fr; }
  .pattern-result { min-height:0; padding:28px 22px; }
  .pattern-result dl > div { grid-template-columns:1fr; gap:4px; }
  .time-result { min-height:370px; }
  .insight-item summary { grid-template-columns:44px 1fr auto; gap:10px; padding:22px 0; }
  .insight-body { grid-template-columns:1fr; gap:22px; padding:0 0 28px 44px; }
  .insight-body cite { grid-column:auto; }
  .article-detail__hero { height:60vw; min-height:230px; }
  .article-header { margin:30px 0 48px; }
  .article-pull { margin:48px 0; padding-left:22px; }
  .article-detail__section { grid-template-columns:36px 1fr; gap:8px; }
  .field-notes { grid-template-columns:1fr; gap:20px; }
  .article-next { padding:26px 22px; }
  .path-card { min-height:390px; }
  .quote-stage { min-height:560px; }
  .quote-text { min-height:190px; font-size:29px; }
  .article-card__image { height:230px; }
  .library-tools { top:var(--header-h); }
  .search-row { align-items:stretch; }
  .guide-layout { gap:26px; }
  .guide-sidebar { padding:0 4px; }
  .guide-panel { padding:26px 20px; }
  .mode-picker { grid-template-columns:1fr; }
  .guide-nav .btn { flex:1; padding-inline:12px; }
  .card-body { padding:22px; }
  .check-row, .review-grid { grid-template-columns:1fr; }
  .data-actions .btn { width:100%; }
  .page-hero { padding-top:calc(var(--header-h) + 52px); }
  .page-hero h1 { font-size:42px; }
  .timeline-item { grid-template-columns:72px 1fr; }
  .btn, .icon-button, .chip, .primary-nav a { min-height:48px; }
  .site-footer { padding-bottom:calc(42px + env(safe-area-inset-bottom)); }
}

@media (max-width: 360px) {
  .shell, .narrow { width:calc(100% - 22px); }
  .display-title { font-size:clamp(30px,9.6vw,35px); }
  .hero__meta { flex-direction:column; gap:10px; }
  .actions { flex-direction:column; }
  .actions .btn { width:100%; }
}

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

@media print {
  .site-header, .site-footer, .data-actions, .dashboard-stack, .toast { display:none !important; }
  .page-hero { padding:20px 0; color:var(--ink); background:white; }
  .dashboard-grid { display:block; }
  .action-card { box-shadow:none; border:1px solid #aaa; }
}