:root {
  --paper: #f7f4ee;
  --paper-soft: #fbfaf7;
  --paper-deep: #eeeae4;
  --ink: #171411;
  --ink-soft: #625c56;
  --sea: #2e706a;
  --sea-bright: #265f58;
  --copper: #9b5a43;
  --copper-bright: #d08d72;
  --gold: #d08d72;
  --white: #fbfaf7;
  --line: #ded8d0;
  --line-light: rgba(255, 253, 248, .18);
  --shadow: none;
  --radius: 2px;
  --shell: min(1180px, calc(100vw - 48px));
  --narrow: min(760px, calc(100vw - 48px));
  --header-h: 76px;
  color-scheme: light;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@font-face {
  font-family: "Yuanheng Rubik";
  src: url("/assets/brand/rubik-bold.ttf") format("truetype");
  font-style: normal;
  font-weight: 700;
  font-display: swap;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Noto Sans SC", "Microsoft YaHei UI", "PingFang SC", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
button { color: inherit; font: inherit; }
img, svg { display: block; max-width: 100%; }
p, h1, h2, h3, blockquote, dl, dd { margin-top: 0; }
h1, h2, h3 { line-height: 1.18; letter-spacing: -.035em; }
h1 { font-size: clamp(3rem, 6.4vw, 6rem); font-weight: 650; }
h2 { font-size: clamp(2rem, 4vw, 3.8rem); font-weight: 620; }
h3 { font-size: clamp(1.18rem, 1.65vw, 1.55rem); font-weight: 620; }
em { color: var(--copper); font-style: normal; }
::selection { color: var(--white); background: var(--copper); }

.shell { width: var(--shell); margin-inline: auto; }
.shell-narrow { width: var(--narrow); margin-inline: auto; }
.section { padding: clamp(88px, 10vw, 144px) 0; }
.icon { width: 1.1em; height: 1.1em; flex: 0 0 auto; }

.skip-link {
  position: fixed; z-index: 1000; top: 8px; left: 8px;
  padding: 10px 14px; color: var(--white); background: var(--sea);
  transform: translateY(-150%); transition: transform .2s;
}
.skip-link:focus { transform: translateY(0); }

.site-header {
  position: sticky; z-index: 100; top: 0; height: var(--header-h);
  border-bottom: 1px solid transparent;
  background: rgba(247, 244, 238, .97);
  transition: border-color .25s, box-shadow .25s;
}
.site-header.is-scrolled { border-color: var(--line); box-shadow: none; }
.header-inner { display: flex; height: 100%; align-items: center; justify-content: space-between; }
.brand { display: inline-flex; gap: 11px; align-items: center; min-height: 44px; }
.brand-mark {
  position: relative; display: block; width: 34px; height: 34px;
  overflow: hidden; border: 1px solid var(--ink); border-radius: 50%;
}
.brand-mark::before, .brand-mark::after, .brand-mark i {
  content: ""; position: absolute; left: 5px; right: 5px; height: 1px; background: currentColor;
}
.brand-mark::before { top: 10px; transform: rotate(-7deg); }
.brand-mark::after { bottom: 10px; transform: rotate(7deg); }
.brand-mark i:first-child { top: 16px; left: 9px; right: 9px; }
.brand-mark i:last-child { width: 6px; height: 6px; top: 13px; left: 14px; border-radius: 50%; background: var(--copper); }
.brand-name { font-size: 20px; font-weight: 730; letter-spacing: -.04em; }
.brand-name span { margin-left: 2px; color: var(--copper); font-size: .78em; letter-spacing: -.02em; }
.site-nav { display: flex; gap: clamp(18px, 2.4vw, 34px); align-items: center; }
.site-nav > a { position: relative; display: inline-flex; min-height: 44px; align-items: center; color: var(--ink-soft); font-size: 14px; font-weight: 600; }
.site-nav > a:not(.nav-contact)::after { content: ""; position: absolute; right: 0; bottom: 6px; left: 0; height: 1px; background: var(--copper); transform: scaleX(0); transform-origin: left; transition: transform .2s; }
.site-nav > a:hover, .site-nav > a[aria-current="page"] { color: var(--ink); }
.site-nav > a:hover::after, .site-nav > a[aria-current="page"]::after { transform: scaleX(1); }
.site-nav .nav-contact { min-height: 42px; padding: 0 18px; color: var(--white); background: var(--sea); }
.site-nav .nav-contact:hover { color: var(--white); background: var(--sea-bright); }
.nav-toggle { display: none; width: 44px; height: 44px; padding: 10px; border: 0; background: transparent; cursor: pointer; }
.nav-toggle .icon { width: 24px; height: 24px; }
.nav-toggle-close { display: none; }

.breadcrumbs { display: flex; gap: 9px; align-items: center; min-height: 52px; color: var(--ink-soft); font-size: 12px; letter-spacing: .02em; }
.breadcrumbs a:hover { color: var(--copper); }
.breadcrumbs span { opacity: .7; }

.button {
  display: inline-flex; min-height: 50px; padding: 0 20px; gap: 20px;
  align-items: center; justify-content: space-between;
  border: 1px solid var(--sea); background: var(--sea); color: var(--white);
  font-size: 14px; font-weight: 650; transition: transform .2s, color .2s, background .2s, border-color .2s;
}
.button .icon { width: 18px; height: 18px; transition: transform .2s; }
.button:hover { transform: translateY(-2px); background: var(--sea-bright); border-color: var(--sea-bright); }
.button:hover .icon { transform: translateX(3px); }
.button--ghost { color: var(--ink); border-color: var(--line); background: transparent; }
.button--ghost:hover { color: var(--white); border-color: var(--sea); background: var(--sea); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.eyebrow {
  margin-bottom: 22px; color: var(--copper); font-size: 12px; font-weight: 750;
  letter-spacing: .14em; text-transform: uppercase;
}
.section-head { display: grid; grid-template-columns: minmax(160px, .35fr) minmax(300px, 1fr); column-gap: 40px; align-items: start; margin-bottom: clamp(48px, 7vw, 84px); }
.section-head .eyebrow { margin: 8px 0 0; }
.section-head h2 { margin-bottom: 0; max-width: 780px; }
.section-intro { grid-column: 2; max-width: 680px; margin: 24px 0 0; color: var(--ink-soft); font-size: 17px; }
.text-link { display: inline-flex; gap: 12px; align-items: center; padding: 8px 0; border-bottom: 1px solid var(--ink); font-size: 14px; font-weight: 650; }
.text-link .icon { transition: transform .2s; }
.text-link:hover { color: var(--copper); border-color: var(--copper); }
.text-link:hover .icon { transform: translateX(3px); }
.plain-link { border-bottom: 1px solid currentColor; font-size: 13px; }

/* Home hero */
.home-hero { position: relative; min-height: calc(100svh - var(--header-h)); overflow: hidden; border-bottom: 1px solid var(--line); }
.hero-grid-lines { position: absolute; inset: 0; pointer-events: none; opacity: .32; background-image: linear-gradient(to right, var(--line) 1px, transparent 1px), linear-gradient(to bottom, var(--line) 1px, transparent 1px); background-size: calc((100vw - max(48px, (100vw - 1180px))) / 6) 100%, 100% 92px; mask-image: linear-gradient(to bottom, black, transparent 92%); }
.home-hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(360px, .85fr); gap: clamp(48px, 7vw, 96px); min-height: calc(100svh - var(--header-h)); padding-block: clamp(64px, 8vw, 112px); align-items: center; }
.home-hero-copy h1 { max-width: 800px; margin-bottom: 28px; font-size: clamp(3.4rem, 6.3vw, 6.2rem); }
.home-hero-copy h1 em { display: block; font-size: .72em; overflow-wrap: anywhere; }
.status-dot { display: inline-block; width: 7px; height: 7px; margin-right: 10px; border-radius: 50%; background: var(--copper); box-shadow: 0 0 0 5px rgba(185,96,55,.1); }
.hero-lead { max-width: 690px; margin-bottom: 34px; color: var(--ink-soft); font-size: clamp(17px, 1.55vw, 20px); }
.fact-strip { display: flex; gap: 0; margin: 48px 0 0; border-top: 1px solid var(--line); }
.fact-strip div { min-width: 150px; padding: 18px 26px 0 0; }
.fact-strip dt { margin-bottom: 2px; color: var(--ink-soft); font-size: 11px; }
.fact-strip dd { font-size: 14px; font-weight: 650; }
.home-hero-visual { display: flex; justify-content: flex-end; }
.horizon-card { position: relative; width: min(100%, 460px); aspect-ratio: .82; overflow: hidden; padding: 28px; color: var(--white); background: var(--sea); box-shadow: var(--shadow); }
.horizon-card::after { content: ""; position: absolute; inset: -30%; background: radial-gradient(circle at 65% 40%, rgba(205,164,94,.14), transparent 24%), repeating-radial-gradient(circle at 52% 48%, transparent 0 40px, rgba(255,255,255,.035) 41px 42px); }
.horizon-top { position: relative; z-index: 2; display: flex; justify-content: space-between; padding-bottom: 16px; border-bottom: 1px solid var(--line-light); color: rgba(255,255,255,.7); font: 600 11px/1.2 ui-monospace, monospace; letter-spacing: .12em; }
.orbit-system { position: absolute; z-index: 2; inset: 18% 8% 12%; }
.orbit { position: absolute; border: 1px solid rgba(255,255,255,.22); border-radius: 50%; }
.orbit-a { inset: 16%; }
.orbit-b { inset: 3%; transform: rotate(12deg) scaleY(.78); }
.orbit-c { inset: -10%; transform: rotate(-18deg) scaleY(.58); border-color: rgba(205,164,94,.34); }
.orbit-core { position: absolute; z-index: 3; top: 50%; left: 50%; display: flex; width: 124px; height: 124px; align-items: center; justify-content: center; flex-direction: column; border: 1px solid rgba(255,255,255,.28); border-radius: 50%; background: var(--sea); transform: translate(-50%, -50%); }
.orbit-core strong { color: var(--gold); font-size: 40px; font-weight: 500; }
.orbit-core span { color: rgba(255,255,255,.7); font-size: 10px; letter-spacing: .1em; }
.orbit-node { position: absolute; z-index: 4; display: grid; width: 54px; height: 54px; place-items: center; border: 1px solid var(--line-light); border-radius: 50%; background: var(--sea); color: rgba(255,255,255,.8); font-size: 11px; }
.node-a { top: 7%; left: 12%; }
.node-b { top: 31%; right: 3%; }
.node-c { bottom: 5%; left: 24%; }
.horizon-quote { position: absolute; z-index: 3; right: 28px; bottom: 25px; left: 28px; display: flex; gap: 14px; align-items: center; color: rgba(255,255,255,.78); font-size: 12px; letter-spacing: .1em; }
.horizon-quote i { flex: 1; height: 1px; background: var(--line-light); }
.signal-bar { color: var(--white); background: var(--copper); }
.signal-list { display: flex; min-height: 66px; gap: 28px; align-items: center; justify-content: center; font-size: 13px; font-weight: 650; letter-spacing: .035em; }
.signal-list i { width: 4px; height: 4px; border-radius: 50%; background: rgba(255,255,255,.55); }

/* Reusable content sections */
.problem-section { background: var(--paper-soft); }
.split-intro { display: grid; grid-template-columns: .85fr 1.15fr; gap: clamp(56px, 10vw, 140px); }
.split-intro .section-head { display: block; margin: 0; position: sticky; top: calc(var(--header-h) + 48px); align-self: start; }
.split-intro .section-head .eyebrow { margin-bottom: 22px; }
.split-intro .section-intro { margin-top: 28px; }
.problem-list { border-top: 1px solid var(--line); }
.problem-row { display: grid; grid-template-columns: 58px 1fr; gap: 22px; padding: 32px 0; border-bottom: 1px solid var(--line); }
.problem-row > span { color: var(--copper); font: 600 12px/1 ui-monospace, monospace; }
.problem-row h3 { margin-bottom: 10px; }
.problem-row p { margin: 0; color: var(--ink-soft); }

.services-section { background: var(--paper); }
.service-stack { border-top: 1px solid var(--line); }
.service-panel { display: grid; grid-template-columns: 90px 1fr 64px; gap: 24px; align-items: center; padding: 42px 0; border-bottom: 1px solid var(--line); transition: background .25s, padding .25s; }
.service-panel:hover { padding-inline: 18px; background: rgba(255,255,255,.3); }
.service-index { align-self: start; padding-top: 10px; color: var(--copper); font: 600 12px/1 ui-monospace, monospace; }
.service-copy { display: grid; grid-template-columns: minmax(230px, .75fr) minmax(250px, 1.25fr); column-gap: 50px; align-items: start; }
.service-kicker { grid-column: 1; margin: 0 0 8px; color: var(--ink-soft); font-size: 11px; }
.service-copy h3 { grid-column: 1; margin: 0; font-size: clamp(1.65rem, 2.8vw, 2.65rem); }
.service-copy > p:not(.service-kicker) { grid-column: 2; grid-row: 1 / span 2; margin: 0; color: var(--ink-soft); }
.inline-tags { grid-column: 2; display: flex; flex-wrap: wrap; gap: 7px; margin: 16px 0 0; padding: 0; list-style: none; }
.inline-tags li { padding: 5px 9px; border: 1px solid var(--line); color: var(--ink-soft); font-size: 11px; }
.circle-link { display: grid; width: 52px; height: 52px; place-items: center; border: 1px solid var(--line); border-radius: 50%; transition: color .2s, background .2s, transform .2s; }
.circle-link .icon { width: 20px; height: 20px; }
.circle-link:hover { color: var(--white); background: var(--sea); transform: rotate(-10deg); }

.method-preview { color: var(--white); background: var(--sea); }
.method-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: clamp(64px, 10vw, 140px); }
.method-sticky { position: sticky; top: calc(var(--header-h) + 48px); align-self: start; }
.method-sticky .eyebrow { color: var(--gold); }
.method-sticky h2 { margin-bottom: 26px; }
.method-sticky p:not(.eyebrow) { max-width: 520px; color: rgba(255,255,255,.68); }
.method-sticky .button { margin-top: 16px; color: var(--white); border-color: var(--line-light); }
.method-sticky .button:hover { color: var(--sea); background: var(--white); }
.method-steps { margin: 0; padding: 0; border-top: 1px solid var(--line-light); list-style: none; }
.method-steps li { display: grid; grid-template-columns: 54px 1fr; gap: 20px; padding: 29px 0; border-bottom: 1px solid var(--line-light); }
.method-steps span { color: var(--gold); font: 600 12px/1 ui-monospace, monospace; }
.method-steps h3 { margin-bottom: 8px; }
.method-steps p { margin: 0; color: rgba(255,255,255,.62); }

.belief-section { overflow: hidden; color: var(--ink); background: var(--paper-deep); }
.belief-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(64px, 10vw, 140px); align-items: center; }
.belief-grid blockquote { position: relative; min-height: 430px; margin: 0; padding: 58px; display: flex; flex-direction: column; justify-content: flex-end; color: var(--white); background: var(--copper); }
.belief-grid blockquote::before { content: "远"; position: absolute; top: -40px; right: -12px; color: rgba(255,255,255,.08); font-size: 260px; font-weight: 700; line-height: 1; }
.belief-grid blockquote p { position: relative; z-index: 1; margin-bottom: 28px; font-size: clamp(2rem, 4vw, 3.4rem); font-weight: 620; line-height: 1.28; letter-spacing: -.05em; }
.belief-grid blockquote footer { position: relative; z-index: 1; color: rgba(255,255,255,.68); font-size: 12px; }
.belief-copy h2 { margin-bottom: 28px; }
.belief-copy > p:not(.eyebrow) { margin-bottom: 32px; color: var(--ink-soft); font-size: 17px; }

.insight-preview { background: var(--paper-soft); }
.article-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.article-card { min-height: 330px; padding: 32px; display: flex; flex-direction: column; background: var(--paper-soft); transition: color .25s, background .25s; }
.article-card > p { color: var(--copper); font-size: 11px; }
.article-card h3 { margin: auto 0 22px; font-size: clamp(1.35rem, 2vw, 1.9rem); }
.article-card h3 a::after { content: ""; position: absolute; inset: 0; }
.article-card { position: relative; }
.article-card > span { color: var(--ink-soft); font-size: 13px; }
.article-card:hover { color: var(--white); background: var(--sea); }
.article-card:hover > p { color: var(--gold); }
.article-card:hover > span { color: rgba(255,255,255,.65); }

.contact-band { padding: 84px 0; color: var(--white); background: var(--copper); }
.contact-band-inner { display: grid; grid-template-columns: 1fr auto; gap: 60px; align-items: end; }
.contact-band .eyebrow { margin-bottom: 14px; color: rgba(255,255,255,.68); }
.contact-band h2 { margin-bottom: 16px; }
.contact-band p:not(.eyebrow) { max-width: 690px; margin: 0; color: rgba(255,255,255,.75); }
.contact-band-actions { display: flex; flex-direction: column; gap: 10px; align-items: stretch; }
.contact-band .button { min-width: 210px; color: var(--ink); border-color: var(--white); background: var(--white); }
.contact-band .button:hover { color: var(--white); background: var(--sea); border-color: var(--sea); }
.contact-band .plain-link { align-self: center; color: rgba(255,255,255,.78); }

/* General page hero */
.page-hero { position: relative; overflow: hidden; padding: clamp(74px, 9vw, 128px) 0 clamp(96px, 11vw, 156px); border-bottom: 1px solid var(--line); }
.page-hero::after { content: ""; position: absolute; top: 0; right: 0; width: 38vw; height: 100%; opacity: .5; background-image: linear-gradient(to right, var(--line) 1px, transparent 1px), linear-gradient(to bottom, var(--line) 1px, transparent 1px); background-size: 72px 72px; mask-image: linear-gradient(to left, black, transparent); }
.page-hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(260px, .6fr); gap: clamp(48px, 8vw, 110px); align-items: end; }
.page-hero-copy { min-width: 0; }
.page-hero-copy h1 { max-width: 900px; margin-bottom: 30px; }
.page-lead { max-width: 760px; margin-bottom: 34px; color: var(--ink-soft); font-size: clamp(17px, 1.7vw, 21px); }
.page-hero-aside { padding: 30px 0 8px 30px; border-left: 1px solid var(--line); color: var(--ink-soft); }
.page-hero-aside p:last-child { margin-bottom: 0; font-size: 15px; }
.aside-label { margin-bottom: 12px; color: var(--copper); font-size: 11px; font-weight: 700; letter-spacing: .1em; }
.compact-hero { padding-block: 72px 96px; }
.compact-hero .page-hero-grid { grid-template-columns: 1fr; }

/* Services */
.service-detail-list { padding-top: 48px; }
.service-detail { display: grid; grid-template-columns: 70px minmax(0, 1.3fr) minmax(270px, .7fr); gap: 40px; padding: 64px 0; border-bottom: 1px solid var(--line); }
.service-detail-no { color: var(--copper); font: 600 12px/1 ui-monospace, monospace; }
.service-detail .eyebrow { margin-bottom: 15px; }
.service-detail h2 { max-width: 670px; margin-bottom: 22px; font-size: clamp(2rem, 3.5vw, 3.2rem); }
.service-detail > div > p:not(.eyebrow) { max-width: 700px; color: var(--ink-soft); }
.service-detail ul { margin: 28px 0 0; padding: 0; list-style: none; }
.service-detail li { display: flex; gap: 10px; align-items: center; padding: 12px 0; border-bottom: 1px solid var(--line); color: var(--ink-soft); font-size: 14px; }
.service-detail li .icon { color: var(--copper); }
.decision-section { background: var(--paper-soft); }
.table-wrap { overflow-x: auto; border-top: 1px solid var(--ink); }
table { width: 100%; border-collapse: collapse; min-width: 720px; }
th, td { padding: 22px 16px 22px 0; text-align: left; vertical-align: top; border-bottom: 1px solid var(--line); }
th { color: var(--ink-soft); font-size: 11px; letter-spacing: .08em; }
td { font-size: 14px; }
td a { border-bottom: 1px solid var(--copper); font-weight: 650; }
.faq-grid { display: grid; grid-template-columns: .65fr 1.35fr; gap: clamp(50px, 9vw, 120px); }
.faq-grid .section-head { display: block; margin: 0; }
.faq-grid .section-head .eyebrow { margin-bottom: 18px; }
.faq-list { border-top: 1px solid var(--ink); }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list summary { position: relative; padding: 26px 45px 26px 0; font-weight: 650; cursor: pointer; list-style: none; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: "+"; position: absolute; top: 23px; right: 4px; color: var(--copper); font-size: 24px; font-weight: 300; }
.faq-list details[open] summary::after { content: "–"; }
.faq-list details p { padding: 0 50px 26px 0; color: var(--ink-soft); }

/* Service detail pages */
.usecase-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; border: 1px solid var(--line); background: var(--line); }
.usecase-card { min-height: 260px; padding: 34px; background: var(--paper); }
.usecase-card > span { color: var(--copper); font: 600 12px/1 ui-monospace, monospace; }
.usecase-card h3 { margin: 72px 0 14px; }
.usecase-card p { margin: 0; color: var(--ink-soft); }
.dark-section { color: var(--white); background: var(--sea); }
.dark-section .eyebrow { color: var(--gold); }
.dark-section .section-intro { color: rgba(255,255,255,.66); }
.deliverable-grid { display: grid; grid-template-columns: .75fr 1.25fr; gap: clamp(64px, 10vw, 140px); }
.deliverable-grid .section-head { display: block; margin: 0; }
.deliverable-grid .section-head .eyebrow { margin-bottom: 18px; }
.deliverable-list { margin: 0; padding: 0; border-top: 1px solid var(--line-light); list-style: none; }
.deliverable-list li { display: grid; grid-template-columns: 54px 1fr; gap: 22px; padding: 28px 0; border-bottom: 1px solid var(--line-light); }
.deliverable-list span { color: var(--gold); font: 600 12px/1 ui-monospace, monospace; }
.deliverable-list h3 { margin-bottom: 7px; }
.deliverable-list p { margin: 0; color: rgba(255,255,255,.65); }
.process-layout .section-head { max-width: 900px; }
.process-line { display: grid; grid-template-columns: repeat(5, 1fr); border-top: 1px solid var(--ink); }
.process-line > div { position: relative; min-height: 230px; padding: 28px 24px 28px 0; border-right: 1px solid var(--line); }
.process-line > div:not(:first-child) { padding-left: 24px; }
.process-line > div:last-child { border-right: 0; }
.process-line span { color: var(--copper); font: 600 12px/1 ui-monospace, monospace; }
.process-line h3 { margin: 78px 0 12px; font-size: 19px; }
.process-line p { margin: 0; color: var(--ink-soft); font-size: 13px; }
.boundary-section { padding: 88px 0; background: var(--paper-deep); }
.boundary-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: clamp(56px, 10vw, 140px); align-items: start; }
.boundary-grid h2 { margin: 0; font-size: clamp(2rem, 3.5vw, 3.25rem); }
.boundary-grid ul { margin: 0; padding: 0; border-top: 1px solid var(--ink); list-style: none; }
.boundary-grid li { display: flex; gap: 14px; align-items: center; padding: 17px 0; border-bottom: 1px solid var(--line); }
.boundary-grid li .icon { color: var(--copper); }

.state-track { display: grid; grid-template-columns: 1fr 20px 1fr 20px 1fr 20px 1fr 20px 1fr 20px 1fr; align-items: center; }
.state-track > div { min-height: 190px; padding: 24px 16px; border: 1px solid var(--line); background: var(--paper-soft); }
.state-track > i { height: 1px; background: var(--copper); }
.state-track span { color: var(--copper); font: 600 11px/1 ui-monospace, monospace; }
.state-track strong { display: block; margin: 58px 0 9px; font-size: 18px; }
.state-track p { margin: 0; color: var(--ink-soft); font-size: 11px; line-height: 1.5; }
.geo-work { background: var(--paper-soft); }
.geo-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; border: 1px solid var(--line); background: var(--line); }
.geo-card { min-height: 360px; padding: 36px; background: var(--paper-soft); }
.geo-card > span { color: var(--copper); font: 600 11px/1 ui-monospace, monospace; }
.geo-card h3 { margin: 72px 0 16px; font-size: clamp(1.6rem, 2.6vw, 2.35rem); }
.geo-card > p { color: var(--ink-soft); }
.geo-card ul { display: flex; flex-wrap: wrap; gap: 7px; margin: 26px 0 0; padding: 0; list-style: none; }
.geo-card li { padding: 5px 9px; border: 1px solid var(--line); color: var(--ink-soft); font-size: 11px; }
.answer-section { color: var(--white); background: var(--sea); }
.answer-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(64px, 10vw, 140px); align-items: center; }
.answer-quote { padding: 54px; border: 1px solid var(--line-light); }
.answer-quote span { color: var(--gold); font-size: 11px; letter-spacing: .1em; }
.answer-quote p { margin: 88px 0 0; font-size: clamp(1.8rem, 3.2vw, 3rem); font-weight: 600; line-height: 1.35; letter-spacing: -.04em; }
.answer-copy h2 { margin-bottom: 26px; }
.answer-copy p { color: rgba(255,255,255,.68); }
.answer-copy .text-link { margin-top: 16px; border-color: rgba(255,255,255,.6); }

.training-map { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; border: 1px solid var(--line); background: var(--line); }
.training-main { min-height: 430px; padding: 42px; background: var(--paper); }
.training-main h3 { max-width: 500px; margin: 92px 0 28px; font-size: clamp(1.7rem, 3vw, 2.6rem); }
.training-main ul { margin: 0; padding: 0; list-style: none; }
.training-main li { padding: 10px 0; border-bottom: 1px solid var(--line); color: var(--ink-soft); font-size: 13px; }
.module-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line-light); }
.module-card { min-height: 290px; padding: 30px; background: var(--sea); }
.module-card span { display: grid; width: 36px; height: 36px; place-items: center; border: 1px solid var(--line-light); border-radius: 50%; color: var(--gold); font-size: 12px; }
.module-card h3 { margin: 88px 0 16px; }
.module-card p { margin: 0; color: rgba(255,255,255,.62); font-size: 13px; }
.outcome-layout { display: grid; grid-template-columns: .7fr 1.3fr; gap: clamp(64px, 10vw, 140px); }
.outcome-layout .section-head { display: block; margin: 0; }
.outcome-layout .section-head .eyebrow { margin-bottom: 18px; }
.outcome-list { display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid var(--ink); }
.outcome-list > div { min-height: 220px; padding: 26px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.outcome-list > div:nth-child(2n) { border-right: 0; }
.outcome-list span { color: var(--copper); font: 600 11px/1 ui-monospace, monospace; }
.outcome-list h3 { margin: 64px 0 10px; }
.outcome-list p { margin: 0; color: var(--ink-soft); font-size: 13px; }

/* Method */
.method-seal { display: flex; flex-direction: column; width: 220px; height: 220px; margin-left: auto; align-items: center; justify-content: center; border: 1px solid var(--line); border-radius: 50%; }
.method-seal .icon { width: 30px; height: 30px; margin-bottom: 18px; color: var(--copper); }
.method-seal strong { font-size: 26px; letter-spacing: .12em; }
.method-seal span { margin-top: 7px; color: var(--ink-soft); font-size: 10px; letter-spacing: .12em; }
.principles-section { background: var(--paper-soft); }
.principle-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; border: 1px solid var(--line); background: var(--line); }
.principle-grid article { min-height: 330px; padding: 30px; background: var(--paper-soft); }
.principle-grid span { color: var(--copper); font: 600 11px/1 ui-monospace, monospace; }
.principle-grid h3 { margin: 100px 0 16px; }
.principle-grid p { margin: 0; color: var(--ink-soft); font-size: 13px; }
.acceptance-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.acceptance-card { padding: 34px; border: 1px solid var(--line); background: var(--paper-soft); }
.acceptance-card > p { color: var(--copper); font-size: 11px; }
.acceptance-card h3 { min-height: 65px; margin: 46px 0 28px; }
.acceptance-card dl { margin: 0; border-top: 1px solid var(--ink); }
.acceptance-card dl div { display: grid; grid-template-columns: 60px 1fr; gap: 10px; padding: 12px 0; border-bottom: 1px solid var(--line); }
.acceptance-card dt { color: var(--ink-soft); font-size: 11px; }
.acceptance-card dd { font-size: 12px; }
.evidence-section { color: var(--white); background: var(--sea); }
.evidence-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: clamp(64px, 10vw, 140px); }
.evidence-title .eyebrow { color: var(--gold); }
.evidence-questions { margin: 0; padding: 0; border-top: 1px solid var(--line-light); list-style: none; }
.evidence-questions li { display: grid; grid-template-columns: 54px 1fr; padding: 24px 0; border-bottom: 1px solid var(--line-light); }
.evidence-questions span { color: var(--gold); font: 600 11px/1 ui-monospace, monospace; }
.evidence-questions p { margin: 0; }

/* Insights and articles */
.library-feature { display: grid; grid-template-columns: 1fr auto; min-height: 420px; padding: 50px; color: var(--white); background: var(--sea); }
.library-feature > div { display: flex; max-width: 800px; flex-direction: column; }
.library-feature h2 { margin: auto 0 20px; }
.library-feature > span { color: rgba(255,255,255,.2); font: 500 clamp(5rem, 12vw, 10rem)/.8 ui-monospace, monospace; }
.library-feature div > p:last-child { color: rgba(255,255,255,.65); }
.library-list { border: 1px solid var(--line); border-top: 0; }
.library-row { display: grid; grid-template-columns: 1.1fr .8fr 48px; gap: 42px; align-items: center; min-height: 190px; padding: 32px 42px; border-bottom: 1px solid var(--line); }
.library-row:last-child { border-bottom: 0; }
.library-row > div > p { margin-bottom: 10px; color: var(--copper); font-size: 11px; }
.library-row h3 { margin: 0; }
.library-row > p { margin: 0; color: var(--ink-soft); font-size: 13px; }
.library-row > span { color: rgba(20,35,38,.2); font: 600 24px/1 ui-monospace, monospace; }
.library-note { display: flex; gap: 40px; justify-content: space-between; margin-top: 44px; padding-top: 22px; border-top: 1px solid var(--ink); color: var(--ink-soft); font-size: 12px; }
.library-note p { max-width: 760px; margin: 0; }
.library-note span { white-space: nowrap; }

.article-page { padding-bottom: 100px; }
.article-header { padding: clamp(72px, 9vw, 120px) 0 56px; border-bottom: 1px solid var(--line); }
.article-header h1 { margin-bottom: 30px; font-size: clamp(2.7rem, 6vw, 5.2rem); }
.article-lead { margin-bottom: 32px; color: var(--ink-soft); font-size: clamp(18px, 2vw, 22px); }
.article-meta { display: flex; flex-wrap: wrap; gap: 12px 26px; color: var(--ink-soft); font-size: 11px; }
.article-body { padding-top: 60px; }
.article-body > p, .article-body > ul, .article-body > ol { font-size: 17px; line-height: 1.95; }
.article-body h2 { margin: 72px 0 24px; font-size: clamp(1.8rem, 3.2vw, 2.7rem); }
.article-body h3 { margin: 42px 0 12px; font-size: 1.35rem; }
.article-body a:not(.button) { border-bottom: 1px solid var(--copper); }
.article-body li { margin-bottom: 8px; }
.answer-box { margin-bottom: 60px; padding: 32px 36px; border-left: 4px solid var(--copper); background: var(--paper-deep); }
.answer-box strong { display: block; margin-bottom: 10px; color: var(--copper); font-size: 12px; letter-spacing: .1em; }
.answer-box p { margin: 0; font-size: 18px; line-height: 1.8; }
.article-cta { margin: 80px 0 0; padding: 44px; color: var(--white); background: var(--sea); }
.article-cta h2 { margin: 0 0 14px; }
.article-cta p { color: rgba(255,255,255,.65); }
.article-cta .button { margin-top: 12px; color: var(--ink); border-color: var(--white); background: var(--white); }
.article-related { display: grid; margin-top: 44px; border-top: 1px solid var(--ink); }
.article-related p { margin: 22px 0 10px; color: var(--copper); font-size: 11px; font-weight: 700; }
.article-related a { display: flex; justify-content: space-between; padding: 17px 0; border-bottom: 1px solid var(--line) !important; font-weight: 650; }

/* About */
.about-monogram { margin-left: auto; width: min(100%, 280px); padding: 38px; border: 1px solid var(--line); }
.about-monogram span { display: block; color: var(--copper); font: 500 clamp(4rem, 8vw, 7rem)/.9 ui-monospace, monospace; letter-spacing: -.12em; }
.about-monogram p { margin: 60px 0 0; color: var(--ink-soft); font: 500 10px/1.7 ui-monospace, monospace; letter-spacing: .08em; text-transform: uppercase; }
.founder-section { background: var(--paper-soft); }
.founder-grid { display: grid; grid-template-columns: .7fr 1.3fr; gap: clamp(64px, 10vw, 140px); }
.founder-title h2 { margin-bottom: 18px; font-size: clamp(3.5rem, 7vw, 6.5rem); }
.founder-role { color: var(--copper); font-size: 14px; }
.founder-copy { padding-top: 44px; border-top: 1px solid var(--ink); }
.founder-copy p { margin-bottom: 24px; font-size: 18px; line-height: 1.9; }
.identity-map { display: grid; grid-template-columns: 1fr 56px 1fr 56px 1fr; align-items: center; }
.identity-map > div { min-height: 260px; padding: 30px; border: 1px solid var(--line); background: var(--paper-soft); }
.identity-map > i { display: grid; place-items: center; color: var(--copper); }
.identity-map > i .icon { width: 20px; height: 20px; }
.identity-map span { color: var(--ink-soft); font-size: 11px; }
.identity-map strong { display: block; margin: 100px 0 10px; font-size: 20px; }
.identity-map p { margin: 0; color: var(--ink-soft); font-size: 12px; }
.relationship-section { color: var(--white); background: var(--sea); }
.relationship-grid { display: grid; grid-template-columns: .7fr 1.3fr; gap: clamp(64px, 10vw, 140px); }
.relationship-grid .section-head { display: block; margin: 0; }
.relationship-grid .section-head .eyebrow { margin-bottom: 18px; color: var(--gold); }
.relationship-list { border-top: 1px solid var(--line-light); }
.relationship-list article { display: grid; grid-template-columns: 54px 1fr; gap: 20px; padding: 27px 0; border-bottom: 1px solid var(--line-light); }
.relationship-list span { color: var(--gold); font: 600 11px/1 ui-monospace, monospace; }
.relationship-list h3 { margin-bottom: 8px; }
.relationship-list p { margin: 0; color: rgba(255,255,255,.62); font-size: 13px; }
.three-beliefs { padding: 0; background: var(--paper-deep); }
.three-beliefs .shell { display: grid; grid-template-columns: repeat(3, 1fr); }
.belief-line { min-height: 290px; padding: 34px; border-left: 1px solid var(--line); }
.belief-line:last-child { border-right: 1px solid var(--line); }
.belief-line span { color: var(--copper); font: 600 11px/1 ui-monospace, monospace; }
.belief-line h3 { margin: 120px 0 10px; }
.belief-line p { margin: 0; color: var(--ink-soft); font-size: 13px; }

/* Contact, legal, 404 */
.contact-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: clamp(64px, 10vw, 140px); }
.contact-cards { display: grid; gap: 14px; align-content: start; }
.contact-card { display: grid; width: 100%; min-height: 160px; padding: 28px; grid-template-columns: 50px 1fr 24px; gap: 20px; align-items: center; border: 1px solid var(--line); background: var(--paper-soft); text-align: left; cursor: pointer; transition: color .2s, background .2s; }
.contact-card > span { display: grid; width: 48px; height: 48px; place-items: center; border: 1px solid var(--line); border-radius: 50%; }
.contact-card > span .icon { width: 20px; height: 20px; }
.contact-card p { margin: 0 0 4px; color: var(--ink-soft); font-size: 11px; }
.contact-card strong { display: block; font-size: clamp(1.3rem, 2.2vw, 1.8rem); }
.contact-card small { color: var(--ink-soft); font-size: 11px; }
.contact-card:hover { color: var(--white); background: var(--sea); }
.contact-card:hover p, .contact-card:hover small { color: rgba(255,255,255,.62); }
.contact-card:hover > span { border-color: var(--line-light); }
.wechat-qr-card { display: grid; grid-template-columns: minmax(0, 260px) 1fr; gap: 22px; align-items: center; margin: 0; padding: 22px; border: 1px solid var(--line); background: var(--paper-soft); }
.wechat-qr-frame { padding: 16px; border: 1px solid var(--line); background: #fff; line-height: 0; }
.wechat-qr-frame img { display: block; width: 100%; height: auto; }
.wechat-qr-card figcaption h2 { margin: 8px 0 12px; font-size: clamp(1.35rem, 2vw, 1.75rem); }
.wechat-qr-card figcaption > p:not(.eyebrow) { margin: 0 0 8px; color: var(--ink-soft); }
.wechat-qr-card .inline-copy { max-width: 100%; overflow-wrap: anywhere; word-break: break-all; }
.wechat-qr-card figcaption small { display: block; color: var(--ink-soft); font-size: 11px; line-height: 1.6; }
.contact-prepare { padding-top: 10px; }
.contact-prepare h2 { margin-bottom: 40px; }
.contact-prepare ol { margin: 0; padding: 0; border-top: 1px solid var(--ink); list-style: none; }
.contact-prepare li { display: grid; grid-template-columns: 54px 1fr; padding: 21px 0; border-bottom: 1px solid var(--line); }
.contact-prepare li span { color: var(--copper); font: 600 11px/1 ui-monospace, monospace; }
.contact-prepare li p { margin: 0; }
.contact-routes { background: var(--paper-soft); }
.route-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; border: 1px solid var(--line); background: var(--line); }
.route-card { position: relative; min-height: 300px; padding: 32px; background: var(--paper-soft); transition: color .2s, background .2s; }
.route-card > span { color: var(--copper); font: 600 11px/1 ui-monospace, monospace; }
.route-card h3 { margin: 100px 0 12px; }
.route-card p { color: var(--ink-soft); font-size: 13px; }
.route-card > .icon { position: absolute; right: 30px; bottom: 30px; }
.route-card:hover { color: var(--white); background: var(--sea); }
.route-card:hover p { color: rgba(255,255,255,.62); }
.privacy-mini { padding: 84px 0; }
.privacy-mini .shell { display: grid; grid-template-columns: .7fr 1.1fr auto; gap: 50px; align-items: center; padding: 34px 0; border-block: 1px solid var(--line); }
.privacy-mini div { display: flex; gap: 14px; align-items: center; }
.privacy-mini div .icon { color: var(--copper); }
.privacy-mini h2 { margin: 0; font-size: 1.45rem; }
.privacy-mini p { margin: 0; color: var(--ink-soft); font-size: 13px; }
.privacy-mini a { border-bottom: 1px solid var(--ink); white-space: nowrap; font-size: 12px; }
.legal-content { padding: 76px 0 120px; }
.legal-content h2 { margin: 54px 0 16px; font-size: 1.55rem; }
.legal-content p { color: var(--ink-soft); font-size: 15px; }
.legal-content a, .inline-copy { padding: 0; border: 0; border-bottom: 1px solid var(--copper); background: transparent; cursor: pointer; }
.legal-note { margin-top: 60px; padding: 24px; border: 1px solid var(--line); background: var(--paper-soft); }
.not-found { display: grid; min-height: 72svh; padding: 100px 0; place-items: center; text-align: center; }
.not-found h1 { margin-bottom: 24px; }
.not-found p:not(.eyebrow) { max-width: 600px; margin-inline: auto; color: var(--ink-soft); }
.not-found .hero-actions { margin-top: 34px; justify-content: center; }

/* Footer and small UI */
.site-footer { padding: 78px 0 28px; color: var(--white); background: #102a2e; }
.footer-grid { display: grid; grid-template-columns: 1.5fr .7fr .9fr; gap: 70px; padding-bottom: 64px; }
.brand--footer .brand-mark { border-color: rgba(255,255,255,.7); }
.footer-brand > p { margin: 20px 0 8px; font-size: 18px; font-weight: 650; }
.footer-brand .footer-note { max-width: 450px; margin: 0; color: rgba(255,255,255,.55); font-size: 12px; font-weight: 400; }
.footer-title { margin: 8px 0 20px; color: var(--gold); font-size: 11px; font-weight: 650; letter-spacing: .1em; }
.footer-links { display: grid; gap: 10px; color: rgba(255,255,255,.62); font-size: 12px; }
.footer-links a:hover, .footer-links button:hover { color: var(--white); }
.text-button { padding: 0; border: 0; background: transparent; text-align: left; cursor: pointer; }
.footer-bottom { display: flex; gap: 30px; justify-content: space-between; padding-top: 24px; border-top: 1px solid var(--line-light); color: rgba(255,255,255,.4); font-size: 10px; }
.footer-bottom p { margin: 0; }
.footer-bottom div { display: flex; gap: 20px; }
.footer-bottom a:hover { color: var(--white); }
.toast { position: fixed; z-index: 200; right: 24px; bottom: 24px; padding: 12px 16px; color: var(--white); background: var(--sea); box-shadow: var(--shadow); font-size: 12px; opacity: 0; transform: translateY(12px); pointer-events: none; transition: opacity .2s, transform .2s; }
.toast.is-visible { opacity: 1; transform: translateY(0); }

/* Motion and focus */
:focus-visible { outline: 3px solid var(--copper-bright); outline-offset: 3px; }
.reveal { opacity: 1; transform: none; }

@media (max-width: 1020px) {
  :root { --shell: min(100% - 40px, 920px); --narrow: min(100% - 40px, 720px); }
  .home-hero-grid { grid-template-columns: 1fr .72fr; gap: 36px; }
  .horizon-card { aspect-ratio: .72; }
  .service-copy { grid-template-columns: 1fr; gap: 15px; }
  .service-copy > p:not(.service-kicker), .inline-tags { grid-column: 1; grid-row: auto; }
  .service-detail { grid-template-columns: 48px 1fr; }
  .service-detail > ul { grid-column: 2; display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 24px; }
  .state-track { grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); }
  .state-track > i { display: none; }
  .state-track > div { border: 0; }
  .module-grid { grid-template-columns: repeat(2, 1fr); }
  .principle-grid { grid-template-columns: repeat(2, 1fr); }
  .identity-map { grid-template-columns: 1fr 36px 1fr 36px 1fr; }
  .privacy-mini .shell { grid-template-columns: 1fr 1.2fr; }
  .privacy-mini a { grid-column: 2; justify-self: start; }
}

@media (max-width: 820px) {
  :root { --header-h: 68px; }
  h1 { font-size: clamp(2.8rem, 11vw, 4.5rem); }
  .nav-toggle { display: block; }
  .site-nav { position: fixed; z-index: 99; top: var(--header-h); right: 0; left: 0; display: none; gap: 0; padding: 14px 20px 24px; border-bottom: 1px solid var(--line); background: var(--paper); box-shadow: 0 20px 40px rgba(20,35,38,.12); }
  .site-nav.is-open { display: grid; }
  .site-nav > a { padding: 8px 4px; border-bottom: 1px solid var(--line); }
  .site-nav .nav-contact { margin-top: 14px; justify-content: center; border: 0; }
  .nav-toggle[aria-expanded="true"] .nav-toggle-open { display: none; }
  .nav-toggle[aria-expanded="true"] .nav-toggle-close { display: block; }
  .section-head { grid-template-columns: 1fr; }
  .section-head .eyebrow { margin: 0 0 18px; }
  .section-intro { grid-column: 1; }
  .home-hero-grid { grid-template-columns: 1fr; padding-top: 56px; }
  .home-hero-copy h1 { margin-bottom: 24px; }
  .home-hero-visual { justify-content: center; }
  .horizon-card { width: min(100%, 520px); aspect-ratio: 1; }
  .signal-list { flex-wrap: wrap; gap: 10px 18px; padding-block: 14px; text-align: center; }
  .split-intro, .method-grid, .belief-grid, .page-hero-grid, .faq-grid, .deliverable-grid, .answer-grid, .outcome-layout, .evidence-layout, .founder-grid, .relationship-grid, .contact-grid { grid-template-columns: minmax(0, 1fr); }
  .split-intro .section-head, .method-sticky { position: static; }
  .service-panel { grid-template-columns: 50px 1fr 52px; }
  .belief-grid blockquote { min-height: 350px; }
  .article-grid { grid-template-columns: 1fr; }
  .article-card { min-height: 250px; }
  .contact-band-inner { grid-template-columns: 1fr; align-items: start; }
  .contact-band-actions { align-items: start; }
  .page-hero-aside { margin-top: 10px; }
  .process-line { grid-template-columns: repeat(2, 1fr); }
  .process-line > div:nth-child(2n) { border-right: 0; }
  .process-line > div:nth-child(n+3) { border-top: 1px solid var(--line); }
  .process-line > div:not(:first-child) { padding-left: 24px; }
  .process-line > div:nth-child(odd) { padding-left: 0; }
  .boundary-grid { grid-template-columns: 1fr; }
  .training-map, .geo-grid { grid-template-columns: 1fr; }
  .acceptance-grid { grid-template-columns: 1fr; }
  .acceptance-card h3 { min-height: 0; }
  .library-row { grid-template-columns: 1fr 48px; }
  .library-row > p { grid-column: 1; }
  .library-row > span { grid-column: 2; grid-row: 1 / span 2; }
  .identity-map { grid-template-columns: 1fr; gap: 0; }
  .identity-map > i { height: 42px; transform: rotate(90deg); }
  .three-beliefs .shell, .route-grid { grid-template-columns: 1fr; }
  .belief-line { min-height: 220px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
  .belief-line h3 { margin-top: 76px; }
  .footer-grid { grid-template-columns: 1.4fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 560px) {
  :root { --shell: calc(100% - 32px); --narrow: calc(100% - 32px); }
  body { font-size: 15px; }
  .section { padding: 76px 0; }
  .breadcrumbs { overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }
  .page-hero-copy, .page-lead { width: 100%; max-width: calc(100vw - 32px); }
  .home-hero-copy h1, .page-hero-copy h1, .article-header h1 { max-width: 100%; overflow-wrap: anywhere; word-break: break-word; }
  .page-hero-copy h1 { font-size: clamp(2.3rem, 10vw, 2.55rem); }
  .page-hero-copy h1 em { display: block; max-width: 100%; overflow-wrap: anywhere; word-break: break-all; }
  .page-lead { width: 100%; font-size: 16px; overflow-wrap: anywhere; word-break: break-all; }
  .home-hero-copy h1 { font-size: clamp(2.65rem, 13vw, 3.35rem); }
  .hero-actions { align-items: stretch; flex-direction: column; }
  .button { width: 100%; }
  .fact-strip { display: grid; grid-template-columns: repeat(3, 1fr); }
  .fact-strip div { min-width: 0; padding-right: 8px; }
  .fact-strip dd { font-size: 12px; }
  .horizon-card { aspect-ratio: .86; padding: 22px; }
  .orbit-system { inset: 21% 5% 14%; }
  .signal-list i { display: none; }
  .signal-list span { width: 100%; }
  .problem-row { grid-template-columns: 42px 1fr; }
  .service-panel { grid-template-columns: 36px 1fr; gap: 14px; }
  .service-panel .circle-link { grid-column: 2; width: 44px; height: 44px; margin-top: 12px; }
  .service-panel:hover { padding-inline: 0; }
  .belief-grid blockquote { min-height: 310px; padding: 34px; }
  .contact-band-actions { width: 100%; }
  .contact-band .button { min-width: 0; }
  .service-detail { grid-template-columns: 1fr; gap: 12px; padding: 46px 0; }
  .service-detail > ul { grid-column: 1; grid-template-columns: 1fr; }
  .usecase-grid { grid-template-columns: 1fr; }
  .usecase-card { min-height: 230px; }
  .process-line { grid-template-columns: 1fr; }
  .process-line > div, .process-line > div:not(:first-child), .process-line > div:nth-child(odd) { min-height: 190px; padding: 24px 0; border-right: 0; border-top: 1px solid var(--line); }
  .process-line > div:first-child { border-top: 0; }
  .process-line h3 { margin-top: 56px; }
  .state-track, .geo-grid, .training-map, .module-grid, .principle-grid, .outcome-list { grid-template-columns: 1fr; }
  .training-main { min-height: 360px; padding: 30px; }
  .training-main h3 { margin-top: 60px; }
  .outcome-list > div { border-right: 0; }
  .method-seal { width: 180px; height: 180px; margin: 0; }
  .library-feature { min-height: 480px; padding: 30px; }
  .library-feature > span { display: none; }
  .library-row { grid-template-columns: 1fr; gap: 18px; padding: 28px 22px; }
  .library-row > p, .library-row > span { grid-column: 1; grid-row: auto; }
  .library-note { flex-direction: column; gap: 12px; }
  .answer-box, .article-cta { padding: 26px 22px; }
  .article-body > p, .article-body > ul, .article-body > ol { font-size: 16px; }
  .about-monogram { margin: 0; }
  .identity-map > div { min-height: 230px; }
  .contact-card { grid-template-columns: 44px 1fr 20px; padding: 22px 18px; }
  .wechat-qr-card { min-width: 0; grid-template-columns: minmax(0, 1fr); gap: 22px; padding: 18px; text-align: center; }
  .wechat-qr-frame { width: min(100%, 280px); max-width: 100%; margin-inline: auto; padding: 16px; }
  .wechat-qr-frame img, .wechat-qr-card figcaption { min-width: 0; max-width: 100%; }
  .privacy-mini .shell { grid-template-columns: 1fr; gap: 24px; }
  .privacy-mini a { grid-column: 1; }
  .footer-grid { grid-template-columns: 1fr; gap: 40px; }
  .footer-brand { grid-column: 1; }
  .footer-bottom { align-items: flex-start; flex-direction: column; }
  .footer-bottom div { flex-direction: column; gap: 6px; }
}

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

@media print {
  .site-header, .site-footer, .contact-band, .toast, .hero-actions { display: none !important; }
  body { color: #000; background: #fff; }
  .section, .article-header, .article-body { padding-block: 24px; }
  a { text-decoration: underline; }
}

/* 2026-08-15 · 远恒AI正式基础VI实施层 */
body { overflow-x: hidden; }
h1, h2, h3 { color: inherit; }
h1 { font-size: clamp(2.8rem, 5.4vw, 5.35rem); font-weight: 700; }
h2 { font-size: clamp(2rem, 3.7vw, 3.45rem); font-weight: 700; }
h3 { font-weight: 700; }
.site-header, .site-nav { box-shadow: none !important; }
.brand { width: 176px; }
.brand-logo { width: 176px; height: auto; }
.brand-logo--inverse { width: 184px; }
.page-hero::after, .hero-grid-lines { display: none; }
.page-hero-axis { position: absolute; right: max(0px, calc((100vw - 1180px) / 2)); bottom: 0; width: min(46vw, 620px); height: auto; opacity: .55; pointer-events: none; }
.page-hero--dark { color: var(--white); background: var(--ink); }
.page-hero--dark .page-lead, .page-hero--dark .page-hero-aside { color: rgba(251,250,247,.7); }
.page-hero--dark .eyebrow { color: var(--copper-bright); }
.page-hero--dark em { color: #58a09a; }
.page-hero--dark .page-hero-aside { border-color: rgba(251,250,247,.22); }
.page-hero--dark .page-hero-axis { filter: brightness(2.2); opacity: .34; }
.aside-verify { width: 72px; margin: 0 0 24px; }

.home-hero { min-height: auto; }
.home-hero-grid { min-height: min(790px, calc(100svh - var(--header-h))); grid-template-columns: minmax(0, 1.08fr) minmax(360px, .72fr); }
.home-hero-copy h1 { font-size: clamp(3rem, 5.7vw, 5.75rem); }
.home-hero-copy h1 em { color: var(--sea); }
.hero-support { max-width: 670px; margin: -14px 0 34px; color: var(--ink-soft); font-size: 14px; }
.status-dot { background: var(--sea); box-shadow: none; }
.brand-stage { position: relative; aspect-ratio: .78; max-height: 590px; overflow: hidden; padding: 28px; color: var(--white); background: var(--ink); }
.brand-stage-field { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: .48; }
.brand-stage-top, .brand-stage-foot, .brand-stage-copy, .brand-stage-mark { position: relative; z-index: 1; }
.brand-stage-top { display: flex; justify-content: space-between; padding-bottom: 16px; border-bottom: 1px solid rgba(251,250,247,.22); color: rgba(251,250,247,.58); font: 700 10px/1.2 "Yuanheng Rubik", sans-serif; letter-spacing: .1em; }
.brand-stage-mark { width: 142px; margin: clamp(76px, 13vh, 124px) auto 42px; }
.brand-stage-copy { display: flex; align-items: center; justify-content: center; gap: 16px; font-size: clamp(1.35rem, 2.5vw, 2rem); letter-spacing: .08em; }
.brand-stage-copy i { width: 38px; height: 1px; background: var(--copper-bright); }
.brand-stage-foot { position: absolute; right: 28px; bottom: 25px; left: 28px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; padding-top: 15px; border-top: 1px solid rgba(251,250,247,.22); color: rgba(251,250,247,.58); font-size: 10px; text-align: center; }
.signal-bar { background: var(--sea); }

.project-path { color: var(--white); background: var(--ink); }
.project-path-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: clamp(64px, 10vw, 140px); }
.project-path-copy > p:not(.eyebrow) { color: rgba(251,250,247,.66); }
.project-path-copy .eyebrow, .project-path-steps span { color: var(--copper-bright); }
.project-path-copy .button { margin-top: 24px; border-color: rgba(251,250,247,.28); color: var(--white); }
.ownership-note { display: grid; grid-template-columns: 58px 1fr; gap: 18px; margin-top: 32px; padding: 20px 0; border-block: 1px solid rgba(251,250,247,.2); }
.ownership-note img { width: 58px; }
.ownership-note p { margin: 0; color: rgba(251,250,247,.66); font-size: 12px; }
.project-path-steps { margin: 0; padding: 0; border-top: 1px solid rgba(251,250,247,.22); list-style: none; }
.project-path-steps li { display: grid; grid-template-columns: 54px 1fr; gap: 22px; padding: 27px 0; border-bottom: 1px solid rgba(251,250,247,.22); }
.project-path-steps h3 { margin-bottom: 7px; }
.project-path-steps p { margin: 0; color: rgba(251,250,247,.62); font-size: 13px; }
.method-preview { background: var(--sea); }
.method-sticky .eyebrow, .method-steps span, .evidence-questions span, .relationship-list span { color: #f0b19a; }
.insight-preview-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; border: 1px solid var(--line); background: var(--line); }
.insight-preview-grid .editorial-card { display: flex; min-width: 0; flex-direction: column; }
.insight-preview-grid .editorial-card-cover { min-height: 240px; }
.insight-preview-grid .editorial-card-copy { min-height: 300px; }
.section-action { display: flex; justify-content: flex-end; margin-top: 30px; }

.decision-section { background: var(--paper-soft); }
.table-wrap { max-width: 100%; overflow-x: auto; border: 1px solid var(--line); }
table { width: 100%; min-width: 720px; border-collapse: collapse; background: var(--paper); }
th, td { padding: 19px 21px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
th { color: var(--sea); font-size: 12px; letter-spacing: .03em; }
td { color: var(--ink-soft); font-size: 14px; }
td a { color: var(--sea); border-bottom: 1px solid currentColor; }
tr:last-child td { border-bottom: 0; }
.service-chapter { scroll-margin-top: var(--header-h); }
.service-chapter--tint { background: var(--paper-soft); }
.service-chapter-grid { display: grid; grid-template-columns: .72fr 1.28fr; gap: clamp(60px, 9vw, 130px); align-items: start; }
.service-chapter-title { position: sticky; top: calc(var(--header-h) + 40px); }
.chapter-no { display: block; margin: 12px 0 56px; color: var(--line); font: 700 clamp(4rem, 9vw, 8rem)/.75 "Yuanheng Rubik", sans-serif; }
.chapter-answer { margin-top: 26px; color: var(--ink-soft); font-size: 17px; }
.service-chapter-body { min-width: 0; }
.service-chapter-body > h3 { margin: 8px 0 18px; }
.check-grid { display: grid; grid-template-columns: repeat(2, 1fr); margin: 0 0 54px; padding: 0; border-top: 1px solid var(--ink); list-style: none; }
.check-grid li { padding: 16px 14px 16px 0; border-bottom: 1px solid var(--line); color: var(--ink-soft); }
.check-grid li::before { content: "·"; margin-right: 10px; color: var(--copper); }
.four-layer { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; margin-bottom: 44px; border: 1px solid var(--line); background: var(--line); }
.four-layer > div { min-height: 190px; padding: 22px; background: var(--paper); }
.four-layer span { color: var(--sea); font-size: 12px; font-weight: 700; }
.four-layer p { margin: 82px 0 0; color: var(--ink-soft); font-size: 12px; line-height: 1.6; }
.price-line { display: grid; grid-template-columns: 100px 160px 1fr; gap: 22px; align-items: baseline; margin: 38px 0 30px; padding: 24px 0; border-block: 1px solid var(--ink); }
.price-line > span { color: var(--copper); font-size: 11px; }
.price-line strong, .plan-price strong, .dual-price strong { font-family: "Yuanheng Rubik", sans-serif; letter-spacing: -.04em; }
.price-line strong { font-size: 2.15rem; }
.price-line p { margin: 0; color: var(--ink-soft); font-size: 12px; }
.state-compact { display: grid; grid-template-columns: repeat(6, 1fr); margin: 0 0 52px; padding: 0; counter-reset: state; border: 1px solid var(--line); list-style: none; }
.state-compact li { min-height: 128px; padding: 18px 12px; border-right: 1px solid var(--line); color: var(--ink-soft); font-size: 12px; }
.state-compact li:last-child { border-right: 0; }
.state-compact li::before { counter-increment: state; content: "0" counter(state); display: block; margin-bottom: 46px; color: var(--copper); font: 700 10px/1 "Yuanheng Rubik", sans-serif; }
.boundary-inline { margin: 38px 0 28px; padding: 24px; border-left: 4px solid var(--copper); background: var(--paper-deep); }
.boundary-inline strong { color: var(--copper); font-size: 12px; }
.boundary-inline p { margin: 8px 0 0; color: var(--ink-soft); }
.training-split { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; margin-bottom: 44px; border: 1px solid var(--line); background: var(--line); }
.training-split > div { min-height: 300px; padding: 30px; background: var(--paper); }
.training-split h3 { margin: 0 0 90px; }
.training-split li { color: var(--ink-soft); }
.diagnostic-strip { color: var(--white); background: var(--sea); }
.diagnostic-strip .section-head h2, .diagnostic-strip .section-intro { color: var(--white); }
.diagnostic-strip .section-intro { opacity: .7; }
.diagnostic-strip .eyebrow { color: #f0b19a; }
.diagnostic-grid { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid rgba(251,250,247,.25); }
.diagnostic-grid > div { min-height: 235px; padding: 26px 22px; border-right: 1px solid rgba(251,250,247,.2); }
.diagnostic-grid > div:last-child { border-right: 0; }
.diagnostic-grid span { color: #f0b19a; font: 700 11px/1 "Yuanheng Rubik", sans-serif; }
.diagnostic-grid h3 { margin: 86px 0 10px; }
.diagnostic-grid p { margin: 0; color: rgba(251,250,247,.66); font-size: 12px; }

.scenario-list { background: var(--paper-soft); }
.scenario-row { display: grid; grid-template-columns: 70px .78fr 1.22fr; gap: 38px; padding: 46px 0; border-top: 1px solid var(--line); }
.scenario-row:last-child { border-bottom: 1px solid var(--line); }
.scenario-no, .scenario-detail span { color: var(--copper); font: 700 11px/1 "Yuanheng Rubik", sans-serif; }
.scenario-main h2 { margin: 6px 0 16px; font-size: clamp(1.7rem, 3vw, 2.7rem); }
.scenario-problem { margin: 0; color: var(--ink-soft); }
.scenario-detail { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; }
.scenario-detail section { padding-left: 22px; border-left: 1px solid var(--line); }
.scenario-detail p { margin: 10px 0 0; color: var(--ink-soft); font-size: 13px; }
.path-summary { color: var(--white); background: var(--ink); }
.path-summary .section-head .eyebrow { color: var(--copper-bright); }
.path-summary .section-intro { color: rgba(251,250,247,.68); }
.five-step { display: grid; grid-template-columns: repeat(5, 1fr); margin: 0; padding: 0; border-top: 1px solid rgba(251,250,247,.24); list-style: none; }
.five-step li { min-height: 225px; padding: 26px 20px; border-right: 1px solid rgba(251,250,247,.2); }
.five-step li:last-child { border-right: 0; }
.five-step span { color: var(--copper-bright); font: 700 11px/1 "Yuanheng Rubik", sans-serif; }
.five-step strong { display: block; margin: 82px 0 10px; }
.five-step p { margin: 0; color: rgba(251,250,247,.62); font-size: 12px; }
.five-step--cards { color: var(--ink); border: 1px solid var(--line); background: var(--line); }
.five-step--cards li { background: var(--paper); border-color: var(--line); }
.five-step--cards p { color: var(--ink-soft); }

.comparison-intro { padding-bottom: 44px; }
.answer-quote { display: grid; grid-template-columns: 180px 1fr; gap: 42px; padding-block: 34px 70px; border-bottom: 1px solid var(--ink); }
.answer-quote span { color: var(--copper); font-size: 11px; font-weight: 700; }
.answer-quote p { margin: 0; font-size: clamp(1.7rem, 3.4vw, 3.05rem); font-weight: 700; line-height: 1.35; }
.plan-list { padding-top: 44px; }
.plan-card { display: grid; min-width: 0; max-width: 100%; grid-template-columns: .65fr 1.35fr; gap: clamp(50px, 8vw, 110px); margin-bottom: 28px; padding: clamp(34px, 5vw, 60px); border: 1px solid var(--line); background: var(--paper-soft); }
.plan-card-head .eyebrow { margin-bottom: 14px; }
.plan-card-head h2 { margin-bottom: 22px; }
.plan-price { display: flex; gap: 8px; align-items: baseline; }
.plan-price strong { color: var(--sea); font-size: clamp(2.3rem, 4.5vw, 4rem); }
.plan-price span { color: var(--ink-soft); font-size: 12px; }
.plan-card-body { min-width: 0; }
.plan-card-body > p { color: var(--ink-soft); }
.plan-card-body h3 { margin: 28px 0 12px; }
.plan-card-body ul { padding-left: 20px; color: var(--ink-soft); }
.plan-card--wide { grid-template-columns: 1fr; }
.plan-columns { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }
.dual-price { display: flex; flex-wrap: wrap; gap: 12px 28px; align-items: baseline; }
.dual-price strong { color: var(--sea); font-size: clamp(2rem, 4vw, 3.4rem); }
.dual-price span { color: var(--ink-soft); }
.plan-card--dark { color: var(--white); background: var(--ink); border-color: var(--ink); }
.plan-card--dark .plan-card-body > p, .plan-card--dark li, .plan-card--dark .plan-price span { color: rgba(251,250,247,.66); }
.plan-card--dark .plan-price strong, .plan-card--dark .eyebrow { color: var(--copper-bright); }
.plan-boundary { background: var(--paper-deep); }
.boundary-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 40px; margin: 0; padding: 0; border-top: 1px solid var(--ink); list-style: none; }
.boundary-list li { padding: 18px 0; border-bottom: 1px solid var(--line); }

.diagnostic-method { background: var(--paper-soft); }
.responsibility-grid { display: grid; grid-template-columns: repeat(3, 1fr); border: 1px solid var(--line); background: var(--line); gap: 1px; }
.responsibility-grid article { min-height: 300px; padding: 30px; background: var(--paper); }
.responsibility-grid span { color: var(--copper); font: 700 11px/1 "Yuanheng Rubik", sans-serif; }
.responsibility-grid h3 { margin: 115px 0 12px; }
.responsibility-grid p { margin: 0; color: var(--ink-soft); font-size: 13px; }
.principles-short { padding: 0; background: var(--paper-deep); }
.principles-short .shell { display: grid; grid-template-columns: repeat(4, 1fr); }
.principles-short .shell > div { min-height: 230px; padding: 30px; border-left: 1px solid var(--line); }
.principles-short .shell > div:last-child { border-right: 1px solid var(--line); }
.principles-short span { color: var(--copper); font: 700 11px/1 "Yuanheng Rubik", sans-serif; }
.principles-short h3 { margin: 95px 0 0; }

.editorial-hub { background: var(--paper-soft); }
.editorial-feature { margin-bottom: 54px; }
.editorial-card { min-width: 0; background: var(--paper); }
.editorial-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; border: 1px solid var(--line); background: var(--line); }
.editorial-grid .editorial-card { display: grid; grid-template-columns: 42% 58%; min-height: 330px; }
.editorial-card-cover { position: relative; display: flex; min-height: 250px; flex-direction: column; justify-content: space-between; overflow: hidden; padding: 24px; background: var(--paper-deep); }
.editorial-card-cover::after { content: ""; position: absolute; inset: 0; background: url("/assets/brand/g04-field-light.svg") center/cover no-repeat; opacity: .18; }
.editorial-card-cover > * { position: relative; z-index: 1; }
.editorial-card-cover img { width: min(48%, 110px); margin: auto; opacity: .82; }
.editorial-card-type { color: var(--copper); font-size: 10px; font-weight: 700; }
.editorial-card-index { align-self: flex-end; color: var(--sea); font: 700 18px/1 "Yuanheng Rubik", sans-serif; }
.editorial-card-copy { display: flex; min-width: 0; padding: 28px; flex-direction: column; align-items: flex-start; }
.editorial-card-copy h2 { margin: auto 0 14px; font-size: clamp(1.25rem, 2vw, 1.75rem); }
.editorial-card-copy > p:not(.editorial-meta) { color: var(--ink-soft); font-size: 12px; }
.editorial-card-copy .text-link { margin-top: 8px; }
.editorial-meta { display: flex; width: 100%; justify-content: space-between; color: var(--ink-soft); font-size: 10px; }
.editorial-card--featured { display: grid; grid-template-columns: .85fr 1.15fr; min-height: 450px; border: 1px solid var(--line); }
.editorial-card--featured .editorial-card-cover { background: var(--sea); }
.editorial-card--featured .editorial-card-cover::after { background-image: url("/assets/brand/g04-field-dark.svg"); opacity: .5; }
.editorial-card--featured .editorial-card-cover img { width: min(44%, 150px); filter: brightness(0) invert(1); }
.editorial-card--featured .editorial-card-type, .editorial-card--featured .editorial-card-index { color: var(--white); }
.editorial-card--featured .editorial-card-copy { padding: clamp(32px, 5vw, 58px); }
.editorial-card--featured .editorial-card-copy h2 { font-size: clamp(1.8rem, 3.5vw, 3.2rem); }
.content-tools { display: flex; gap: 32px; align-items: end; justify-content: space-between; margin-bottom: 24px; padding-bottom: 18px; border-bottom: 1px solid var(--ink); }
.content-filters { display: flex; flex-wrap: wrap; gap: 8px; }
.content-filters button { min-height: 40px; padding: 0 15px; border: 1px solid var(--line); background: transparent; cursor: pointer; }
.content-filters button:hover, .content-filters button.is-active { color: var(--white); border-color: var(--sea); background: var(--sea); }
.content-search { display: grid; gap: 6px; color: var(--ink-soft); font-size: 10px; }
.content-search input { width: min(290px, 42vw); min-height: 42px; padding: 0 12px; border: 1px solid var(--line); border-radius: 0; background: var(--paper); color: var(--ink); font: inherit; }
.editorial-card[hidden], .content-empty[hidden] { display: none !important; }
.content-empty { padding: 80px 20px; border: 1px solid var(--line); text-align: center; }
.content-empty p { color: var(--ink-soft); }
.editorial-policy { display: grid; grid-template-columns: 80px 1fr auto; gap: 28px; align-items: center; margin-top: 62px; padding-block: 28px; border-block: 1px solid var(--line); }
.editorial-policy img { width: 80px; }
.editorial-policy h2 { margin-bottom: 8px; font-size: 1.45rem; }
.editorial-policy p { margin: 0; color: var(--ink-soft); font-size: 13px; }
.editorial-policy time { color: var(--ink-soft); font-size: 10px; white-space: nowrap; }

.article-header { position: relative; }
.article-header::after { content: ""; position: absolute; right: 0; bottom: 0; left: 0; height: 3px; background: linear-gradient(90deg, var(--sea) 0 61.5%, var(--copper) 61.5% 72%, transparent 72%); }
.article-header h1 { font-size: clamp(2.5rem, 5.4vw, 4.8rem); }
.source-panel, .boundary-note, .checklist-card { margin: 54px 0; padding: 30px; border: 1px solid var(--line); background: var(--paper-soft); }
.source-panel-title, .boundary-note > strong { color: var(--copper); font-size: 11px; font-weight: 700; letter-spacing: .08em; }
.source-panel p:last-child, .boundary-note p { margin-bottom: 0; color: var(--ink-soft); font-size: 13px; }
.definition-list { display: grid; gap: 1px; margin: 30px 0; border: 1px solid var(--line); background: var(--line); }
.definition-list > div { display: grid; grid-template-columns: 150px 1fr; padding: 18px; background: var(--paper); }
.definition-list dt { color: var(--sea); font-weight: 700; }
.definition-list dd { color: var(--ink-soft); }
.article-comparison { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; margin: 30px 0; border: 1px solid var(--line); background: var(--line); }
.article-comparison section { min-height: 300px; padding: 26px; background: var(--paper); }
.article-comparison span { color: var(--copper); font: 700 11px/1 "Yuanheng Rubik", sans-serif; }
.article-comparison h3 { margin-top: 86px; }
.article-comparison p { color: var(--ink-soft); font-size: 13px; }
.checklist-card { border-top: 4px solid var(--sea); }
.checklist-card h2 { margin-top: 0; }
.article-cta { background: var(--sea); }
.article-cta .button--ghost { color: var(--white); background: transparent; border-color: rgba(251,250,247,.4); }
.article-related a { display: grid; grid-template-columns: 100px 1fr 24px; gap: 18px; align-items: center; }
.article-related a span { color: var(--copper); font-size: 10px; font-weight: 700; }

.about-mark { display: grid; gap: 22px; }
.about-mark img { width: 118px; }
.about-mark span { color: var(--ink-soft); font: 700 10px/1.5 "Yuanheng Rubik", sans-serif; letter-spacing: .08em; }
.route-grid--four { grid-template-columns: repeat(4, 1fr); }
.contact-band { background: var(--copper); }
.site-footer { background: var(--ink); }
.footer-title { color: var(--copper-bright); }
.toast { background: var(--ink); box-shadow: none; }

@media (max-width: 1020px) {
  .home-hero-grid { grid-template-columns: 1fr .66fr; }
  .brand-stage-mark { margin-top: 80px; }
  .four-layer, .state-compact { grid-template-columns: repeat(2, 1fr); }
  .state-compact li { border-bottom: 1px solid var(--line); }
  .diagnostic-grid { grid-template-columns: repeat(2, 1fr); }
  .five-step { grid-template-columns: repeat(3, 1fr); }
  .editorial-grid .editorial-card { grid-template-columns: 1fr; }
  .editorial-grid .editorial-card-cover { min-height: 220px; }
  .route-grid--four { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 820px) {
  .site-nav { background: var(--paper); }
  .home-hero-grid, .project-path-grid, .service-chapter-grid { grid-template-columns: 1fr; }
  .brand-stage { width: min(100%, 500px); justify-self: center; aspect-ratio: .9; }
  .brand-stage-mark { margin-top: 90px; }
  .service-chapter-title { position: static; }
  .chapter-no { margin-bottom: 34px; }
  .scenario-row { grid-template-columns: 44px 1fr; }
  .scenario-detail { grid-column: 2; }
  .plan-card { grid-template-columns: 1fr; }
  .five-step { grid-template-columns: repeat(2, 1fr); }
  .editorial-card--featured, .editorial-grid { grid-template-columns: 1fr; }
  .insight-preview-grid { grid-template-columns: 1fr; }
  .insight-preview-grid .editorial-card { display: grid; grid-template-columns: 40% 60%; }
  .insight-preview-grid .editorial-card-copy { min-height: 290px; }
  .editorial-card--featured .editorial-card-cover { min-height: 300px; }
  .editorial-card--featured .editorial-card-copy { min-height: 340px; }
  .responsibility-grid, .article-comparison { grid-template-columns: 1fr; }
  .article-comparison section { min-height: 230px; }
  .article-comparison h3 { margin-top: 54px; }
  .principles-short .shell { grid-template-columns: repeat(2, 1fr); }
  .editorial-policy { grid-template-columns: 66px 1fr; }
  .editorial-policy time { grid-column: 2; }
}

@media (max-width: 560px) {
  h1, .home-hero-copy h1, .page-hero-copy h1, .article-header h1 { word-break: normal; overflow-wrap: anywhere; }
  .page-hero-copy h1 em, .page-lead { word-break: normal; overflow-wrap: anywhere; }
  .brand, .brand-logo { width: 152px; }
  .home-hero-grid { min-height: auto; padding-block: 54px 72px; }
  .home-hero-copy h1 { font-size: clamp(2.65rem, 13vw, 3.25rem); }
  .hero-support { font-size: 13px; }
  .brand-stage { aspect-ratio: .78; padding: 22px; }
  .brand-stage-mark { width: 110px; margin-top: 72px; }
  .brand-stage-foot { right: 22px; bottom: 20px; left: 22px; }
  .signal-list { padding-block: 15px; }
  .project-path-grid { gap: 52px; }
  .ownership-note { grid-template-columns: 46px 1fr; }
  .ownership-note img { width: 46px; }
  .service-chapter-grid { gap: 44px; }
  .check-grid, .four-layer, .state-compact, .training-split, .scenario-detail, .diagnostic-grid, .plan-columns, .boundary-list, .five-step, .principles-short .shell, .route-grid--four { grid-template-columns: 1fr; }
  .four-layer > div { min-height: 150px; }
  .four-layer p { margin-top: 52px; }
  .price-line { grid-template-columns: 1fr; gap: 7px; }
  .state-compact li { min-height: 110px; border-right: 0; }
  .state-compact li::before { margin-bottom: 34px; }
  .training-split > div { min-height: 250px; }
  .training-split h3 { margin-bottom: 58px; }
  .scenario-row { grid-template-columns: 1fr; gap: 14px; padding-block: 38px; }
  .scenario-detail { grid-column: 1; gap: 20px; }
  .scenario-detail section { padding: 20px 0 0; border-top: 1px solid var(--line); border-left: 0; }
  .five-step li { min-height: 180px; border-right: 0; border-bottom: 1px solid currentColor; }
  .five-step strong { margin-top: 58px; }
  .answer-quote { grid-template-columns: 1fr; gap: 14px; }
  .plan-card { padding: 28px 22px; }
  .dual-price { align-items: flex-start; flex-direction: column; }
  .content-tools { align-items: stretch; flex-direction: column; }
  .insight-preview-grid .editorial-card { grid-template-columns: 1fr; }
  .insight-preview-grid .editorial-card-copy { min-height: 280px; }
  .content-search input { width: 100%; }
  .editorial-card--featured .editorial-card-cover { min-height: 270px; }
  .editorial-grid .editorial-card { min-height: auto; }
  .editorial-card-copy { min-height: 300px; padding: 24px; }
  .editorial-policy { grid-template-columns: 1fr; }
  .editorial-policy time { grid-column: 1; }
  .definition-list > div { grid-template-columns: 1fr; gap: 7px; }
  .article-related a { grid-template-columns: 1fr 22px; }
  .article-related a span { grid-column: 1 / -1; }
}

/* 2026-08-15 v2：四服务结构与高频内容发布界面 */
.site-nav { gap: clamp(12px, 1.45vw, 22px); }
.site-nav > a { font-size: 13px; white-space: nowrap; }

.package-grid,
.service-choice-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  border: 1px solid var(--line);
  background: var(--line);
}

.package-card {
  min-height: 430px;
  padding: clamp(28px, 3.5vw, 42px);
  background: var(--paper-soft);
}

.package-card .eyebrow { margin-bottom: 70px; }
.package-card h3 { margin-bottom: 18px; font-size: clamp(1.45rem, 2.4vw, 2.15rem); }
.package-card > p:not(.eyebrow),
.package-card li { color: var(--ink-soft); }
.package-card ul { margin: 28px 0 0; padding: 0; border-top: 1px solid var(--line); list-style: none; }
.package-card li { padding: 11px 0; border-bottom: 1px solid var(--line); font-size: 13px; }

.service-choice-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.service-choice-grid article { min-height: 520px; padding: clamp(32px, 5vw, 58px); background: var(--paper-soft); }
.service-choice-grid article > span { color: var(--copper); font: 700 11px/1 "Yuanheng Rubik", sans-serif; }
.service-choice-grid h2 { margin: 100px 0 22px; font-size: clamp(2rem, 3.5vw, 3.25rem); }
.service-choice-grid p,
.service-choice-grid li { color: var(--ink-soft); }
.service-choice-grid ul { margin-top: 28px; padding-left: 20px; }

.content-filters a {
  display: inline-flex;
  min-height: 40px;
  padding: 0 15px;
  align-items: center;
  border: 1px solid var(--line);
  font-size: 13px;
}
.content-filters a:hover,
.content-filters a.is-active { color: var(--white); border-color: var(--sea); background: var(--sea); }
.search-control { position: relative; display: block; }
.search-control .icon { position: absolute; top: 50%; left: 13px; width: 17px; transform: translateY(-50%); pointer-events: none; }
.content-search .search-control input { padding-left: 40px; }

.content-search-results { display: grid; margin-bottom: 32px; border-top: 1px solid var(--ink); }
.content-search-results[hidden] { display: none; }
.search-summary { margin: 0; padding: 18px 0; border-bottom: 1px solid var(--line); color: var(--ink-soft); font-size: 13px; }
.search-result { display: grid; grid-template-columns: 150px minmax(260px, .8fr) minmax(280px, 1.2fr); gap: 28px; padding: 26px 0; border-bottom: 1px solid var(--line); align-items: start; }
.search-result > span { color: var(--copper); font-size: 11px; }
.search-result h2 { margin: 0; font-size: clamp(1.25rem, 2vw, 1.8rem); }
.search-result h2 a:hover { color: var(--sea); }
.search-result p { margin: 0; color: var(--ink-soft); font-size: 13px; }

.content-pagination { display: flex; gap: 18px; align-items: center; justify-content: center; margin-top: 48px; }
.content-pagination a { min-height: 44px; padding: 8px 18px; border: 1px solid var(--line); }
.content-pagination a:hover { color: var(--white); border-color: var(--sea); background: var(--sea); }
.content-pagination span { color: var(--ink-soft); font-size: 13px; }
.content-pagination[hidden] { display: none; }
.editorial-policy > a { border-bottom: 1px solid currentColor; white-space: nowrap; }

.article-body blockquote {
  margin: 48px 0;
  padding: 26px 30px;
  border-left: 4px solid var(--copper);
  background: var(--paper-deep);
}
.article-body blockquote p { margin: 0; color: var(--ink-soft); }
.article-body pre { max-width: 100%; overflow: auto; padding: 22px; color: var(--white); background: var(--ink); }
.article-body code { font-family: ui-monospace, "Cascadia Code", monospace; }

@media (max-width: 1120px) {
  .nav-toggle { display: block; }
  .site-nav { position: fixed; z-index: 99; top: var(--header-h); right: 0; left: 0; display: none; gap: 0; padding: 14px 20px 24px; border-bottom: 1px solid var(--line); background: var(--paper); }
  .site-nav.is-open { display: grid; }
  .site-nav > a { padding: 8px 4px; border-bottom: 1px solid var(--line); }
  .site-nav .nav-contact { margin-top: 14px; justify-content: center; border: 0; }
  .nav-toggle[aria-expanded="true"] .nav-toggle-open { display: none; }
  .nav-toggle[aria-expanded="true"] .nav-toggle-close { display: block; }
}

@media (max-width: 820px) {
  .package-grid { grid-template-columns: 1fr; }
  .package-card { min-height: auto; }
  .package-card .eyebrow { margin-bottom: 42px; }
  .search-result { grid-template-columns: 110px 1fr; }
  .search-result p { grid-column: 2; }
}

@media (max-width: 560px) {
  .service-choice-grid { grid-template-columns: 1fr; }
  .service-choice-grid article { min-height: auto; padding: 30px 22px; }
  .service-choice-grid h2 { margin-top: 62px; }
  .content-filters { display: grid; grid-template-columns: repeat(2, 1fr); width: 100%; }
  .content-filters a { justify-content: center; text-align: center; }
  .search-result { grid-template-columns: 1fr; gap: 10px; }
  .search-result p { grid-column: 1; }
  .content-pagination { flex-wrap: wrap; }
}