:root {
  --ink: #17151f;
  --paper: #f4f5f7;
  --white: #fff;
  --purple: #6252ff;
  --lilac: #dcd7ff;
  --orange: #ff5c35;
  --line: rgb(23 21 31 / 16%);
  --muted: #686572;
  --display: "Source Han Serif SC", "Noto Serif SC", "Songti SC", STSong, serif;
  --sans: "HarmonyOS Sans SC", MiSans, "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --gutter: clamp(24px, 2vw, 64px);
  --shell: calc(100% - (var(--gutter) * 2));
  --header-height: 82px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-height) + 24px); }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: var(--sans); font-size: 16px; line-height: 1.65; -webkit-font-smoothing: antialiased; }
body.menu-open { overflow: hidden; }
body.menu-open .site-header { background: var(--paper); }
a { color: inherit; text-decoration: none; }
button, a { -webkit-tap-highlight-color: transparent; }
button { color: inherit; font: inherit; }
p, h1, h2, h3, ul, ol { margin-top: 0; }
:focus-visible { outline: 3px solid var(--orange); outline-offset: 4px; }

.skip-link { position: fixed; z-index: 100; top: 12px; left: 12px; padding: 10px 16px; color: #fff; background: var(--ink); transform: translateY(-160%); transition: transform 180ms ease; }
.skip-link:focus { transform: translateY(0); }
.notice-strip { min-height: 38px; padding: 7px 24px; display: flex; align-items: center; justify-content: center; gap: 24px; color: #fff; background: var(--ink); font-size: 12px; letter-spacing: .04em; }
.notice-strip p { margin: 0; }
.notice-strip a { padding-left: 24px; border-left: 1px solid rgb(255 255 255 / 32%); font-weight: 700; }

.site-header { position: sticky; z-index: 50; top: 0; width: 100%; height: var(--header-height); padding: 0 var(--gutter); display: flex; align-items: center; justify-content: space-between; background: rgb(244 245 247 / 86%); border-bottom: 1px solid transparent; backdrop-filter: blur(18px); transition: border-color 180ms ease, background 180ms ease; }
.site-header.is-scrolled { border-color: var(--line); background: rgb(244 245 247 / 96%); }
.brand { display: grid; grid-template-columns: 42px auto; grid-template-rows: auto auto; column-gap: 12px; align-items: center; line-height: 1; }
.brand-mark { width: 42px; height: 42px; grid-row: 1 / 3; display: grid; place-items: center; color: #fff; background: var(--purple); border-radius: 50%; font-family: var(--display); font-size: 20px; font-weight: 700; }
.brand-logo { object-fit: cover; border: 1px solid rgb(23 21 31 / 24%); }
.brand-name { font-size: 16px; font-weight: 800; letter-spacing: .08em; }
.brand-en { margin-top: 6px; color: var(--muted); font-family: var(--mono); font-size: 9px; letter-spacing: .14em; }
.site-nav { display: flex; align-items: center; gap: clamp(20px, 2.4vw, 40px); font-size: 14px; font-weight: 600; }
.site-nav > a:not(.nav-cta) { position: relative; }
.site-nav > a:not(.nav-cta)::after { content: ""; position: absolute; right: 0; bottom: -5px; left: 0; height: 1px; background: currentColor; transform: scaleX(0); transform-origin: right; transition: transform 180ms ease; }
.site-nav > a:not(.nav-cta):hover::after { transform: scaleX(1); transform-origin: left; }
.nav-cta { padding: 11px 17px; color: #fff; background: var(--ink); border-radius: 999px; transition: background 180ms ease, transform 180ms ease; }
.nav-cta:hover { background: var(--purple); transform: translateY(-2px); }
.menu-toggle { display: none; }

.section-shell { width: var(--shell); min-height: 100svh; margin-inline: auto; padding-block: clamp(96px, 12vw, 176px); display: flex; flex-direction: column; justify-content: center; }
.section-tag { margin-bottom: clamp(48px, 7vw, 96px); padding-top: 14px; display: flex; justify-content: space-between; border-top: 1px solid var(--ink); font-family: var(--mono); font-size: 11px; letter-spacing: .1em; text-transform: uppercase; }
.section-tag-light { border-color: rgb(255 255 255 / 36%); }
.section-title { margin-bottom: 0; font-family: var(--display); font-size: clamp(44px, 6.5vw, 94px); font-weight: 500; letter-spacing: -.055em; line-height: 1.03; }
.section-lead { max-width: 510px; margin: 8px 0 0; color: var(--muted); font-size: clamp(16px, 1.6vw, 21px); line-height: 1.7; }
.section-heading-row { margin-bottom: clamp(48px, 7vw, 90px); display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(300px, .8fr); gap: 64px; align-items: end; }

.hero { min-height: calc(100svh - 38px); overflow: hidden; }
.hero-copy { position: relative; z-index: 2; width: var(--shell); margin: 0 auto; padding: clamp(64px, 8vw, 112px) 0 clamp(40px, 5vw, 72px); }
.eyebrow { margin-bottom: 30px; display: flex; align-items: center; gap: 12px; font-family: var(--mono); font-size: 11px; font-weight: 700; letter-spacing: .16em; }
.eyebrow::before { content: ""; width: 38px; height: 1px; background: currentColor; }
.hero-title { max-width: min(76vw, 1500px); margin-bottom: 42px; font-family: var(--display); font-size: clamp(70px, 9.6vw, 190px); font-weight: 500; letter-spacing: -.075em; line-height: .9; }
.hero-title span { display: block; }
.hero-title span:nth-child(2) { margin-left: clamp(0px, 7vw, 112px); }
.hero-title-accent { color: var(--purple); font-style: italic; }
.hero-intro { width: min(100%, 520px); margin-left: clamp(0px, 32vw, 500px); }
.hero-intro > p { margin-bottom: 28px; font-size: clamp(17px, 1.6vw, 21px); }
.hero-actions { display: flex; align-items: center; gap: 28px; }
.button { min-height: 50px; padding: 13px 22px; display: inline-flex; align-items: center; justify-content: center; border: 1px solid transparent; border-radius: 999px; font-size: 14px; font-weight: 700; transition: transform 180ms ease, background 180ms ease; }
.button:hover { transform: translateY(-2px); }
.button-primary { color: #fff; background: var(--purple); }
.button-primary:hover { background: var(--ink); }
.text-link { padding-block: 8px; border-bottom: 1px solid var(--ink); font-size: 14px; font-weight: 700; }

.hero-stage { position: relative; min-height: max(780px, 100svh); margin-top: clamp(-130px, -7vw, -70px); background: var(--lilac); border-block: 1px solid var(--ink); isolation: isolate; }
.hero-stage::before, .hero-stage::after { content: ""; position: absolute; z-index: -1; background: rgb(255 255 255 / 70%); }
.hero-stage::before { top: 0; bottom: 0; left: 21%; width: 1px; }
.hero-stage::after { top: 55%; right: 0; left: 0; height: 1px; }
.hero-word { position: absolute; z-index: -1; top: 50%; left: 50%; color: var(--purple); font-family: var(--display); font-size: clamp(200px, 38vw, 620px); font-weight: 700; letter-spacing: -.11em; line-height: .75; transform: translate(-52%, -48%); white-space: nowrap; }
.orbit-label { position: absolute; font-family: var(--mono); font-size: 10px; letter-spacing: .18em; writing-mode: vertical-rl; }
.orbit-label-top { top: 34px; left: 28px; }
.orbit-label-bottom { right: 28px; bottom: 34px; transform: rotate(180deg); }
.phone-shell { position: absolute; z-index: 2; top: 46%; left: 50%; width: 340px; padding: 10px; background: #0d0c12; border: 1px solid rgb(255 255 255 / 20%); border-radius: 48px; box-shadow: 0 42px 80px rgb(39 24 100 / 28%); transform: translate(-50%, -50%) rotate(2.5deg); }
.phone-topbar { height: 33px; padding-inline: 16px; display: flex; align-items: center; justify-content: space-between; color: rgb(255 255 255 / 90%); font-family: var(--mono); font-size: 9px; }
.phone-island { width: 82px; height: 22px; background: #000; border-radius: 99px; }
.phone-screen { min-height: 606px; padding: 24px 18px 20px; overflow: hidden; background: #f8f8fb; border-radius: 37px; }
.app-heading { margin-bottom: 22px; display: flex; align-items: center; justify-content: space-between; }
.app-heading strong, .app-heading span { display: block; }
.app-kicker { margin-bottom: 4px; color: #7a7584; font-size: 10px; }
.app-heading strong { font-family: var(--display); font-size: 22px; }
.avatar { width: 36px; height: 36px; display: grid !important; place-items: center; color: #fff; background: var(--purple); border-radius: 50%; font-family: var(--display); }
.today-card { padding: 16px; display: grid; grid-template-columns: 72px 1fr; gap: 16px; color: #fff; background: var(--purple); border-radius: 22px; }
.today-date { padding-right: 14px; border-right: 1px solid rgb(255 255 255 / 25%); text-align: center; }
.today-date span, .today-date strong, .today-date small { display: block; }
.today-date span { font-size: 9px; }
.today-date strong { margin: 5px 0 -4px; font-family: var(--display); font-size: 40px; line-height: 1; }
.today-date small { font-size: 9px; }
.course-list p { margin: 0 0 7px; font-size: 10px; }
.course-list p:last-child { margin-bottom: 0; }
.course-list span { margin-right: 7px; color: rgb(255 255 255 / 62%); font-family: var(--mono); font-size: 8px; }
.quick-grid { margin-block: 18px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; }
.quick-grid > div { display: grid; justify-items: center; gap: 7px; }
.quick-grid small { font-size: 8px; white-space: nowrap; }
.quick-icon { width: 45px; height: 45px; display: grid; place-items: center; background: #fff; border: 1px solid rgb(23 21 31 / 8%); border-radius: 15px; font-family: var(--display); font-weight: 700; }
.app-notice { padding: 14px; display: grid; grid-template-columns: 8px 1fr auto; gap: 10px; align-items: center; background: #fff; border: 1px solid rgb(23 21 31 / 8%); border-radius: 17px; }
.notice-dot { width: 8px; height: 8px; background: var(--orange); border-radius: 50%; }
.app-notice small, .app-notice strong { display: block; }
.app-notice small { color: #817d88; font-size: 8px; }
.app-notice strong { margin-top: 2px; font-size: 10px; }
.floating-card { position: absolute; z-index: 3; width: 210px; padding: 20px; background: #fff; border: 1px solid var(--ink); box-shadow: 10px 10px 0 var(--ink); }
.floating-card span, .floating-card strong, .floating-card small { display: block; }
.floating-label { margin-bottom: 24px; font-family: var(--mono); font-size: 9px; letter-spacing: .12em; }
.floating-card strong { margin-bottom: 4px; font-family: var(--display); font-size: 24px; }
.floating-card small { color: var(--muted); font-size: 11px; }
.floating-card-room { top: 16%; left: calc(50% - 430px); transform: rotate(-4deg); }
.floating-card-version { right: calc(50% - 440px); bottom: 16%; color: #fff; background: var(--orange); transform: rotate(3deg); }
.floating-card-version small { color: rgb(255 255 255 / 80%); }
.hero-rail { overflow: hidden; color: #fff; background: var(--ink); border-bottom: 1px solid var(--ink); }
.rail-track { width: max-content; height: 52px; display: flex; align-items: center; gap: 28px; font-size: 13px; font-weight: 700; animation: rail-move 32s linear infinite; }
.rail-track i { width: 5px; height: 5px; background: var(--orange); border-radius: 50%; }
@keyframes rail-move { to { transform: translateX(-50%); } }

.manifesto-grid { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(320px, .7fr); gap: clamp(60px, 10vw, 160px); align-items: start; }
.manifesto-copy { padding-top: 16px; font-size: clamp(17px, 1.6vw, 21px); }
.manifesto-copy p { margin-bottom: 28px; }
.manifesto-copy p:last-child { margin-bottom: 0; color: var(--muted); }

.features, .changelog, .join, .team { width: 100%; max-width: none; padding-inline: var(--gutter); }
.features { color: #fff; background: var(--ink); }
.features .section-lead { color: rgb(255 255 255 / 65%); }
.feature-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.feature-card { min-height: 540px; padding: clamp(28px, 4vw, 58px); position: relative; overflow: hidden; color: var(--ink); background: #fff; border-radius: 2px; }
.feature-card-wide { min-height: 590px; grid-column: span 2; display: grid; grid-template-columns: minmax(0, 1fr) minmax(320px, .8fr); gap: 60px; align-items: center; }
.feature-card-purple { color: #fff; background: var(--purple); }
.feature-card-dark { color: #fff; background: #292631; }
.feature-card-paper { background: #e7e9f0; }
.feature-index { display: block; margin-bottom: clamp(60px, 8vw, 110px); font-family: var(--mono); font-size: 10px; font-weight: 700; letter-spacing: .14em; }
.feature-card h3 { margin-bottom: 24px; font-family: var(--display); font-size: clamp(35px, 4vw, 62px); font-weight: 500; letter-spacing: -.045em; line-height: 1.1; }
.feature-card p { max-width: 520px; color: inherit; opacity: .7; font-size: 16px; }
.feature-card-wide .feature-index { margin-bottom: 54px; }
.chip-list { margin: 36px 0 0; padding: 0; display: flex; flex-wrap: wrap; gap: 8px; list-style: none; }
.chip-list li { padding: 7px 12px; border: 1px solid currentColor; border-radius: 999px; font-size: 11px; font-weight: 700; }
.feature-visual { justify-self: end; }
.transcript-card { width: min(100%, 440px); padding: 28px; background: var(--paper); border: 1px solid var(--ink); box-shadow: 15px 15px 0 var(--purple); transform: rotate(2deg); }
.transcript-head { display: flex; justify-content: space-between; font-family: var(--mono); font-size: 9px; }
.score-ring { width: 152px; height: 152px; margin: 28px auto 34px; display: grid; place-content: center; border: 12px solid var(--lilac); border-top-color: var(--purple); border-radius: 50%; text-align: center; transform: rotate(-8deg); }
.score-ring strong, .score-ring span { transform: rotate(8deg); }
.score-ring strong { font-family: var(--display); font-size: 40px; line-height: 1; }
.score-ring span { font-family: var(--mono); font-size: 9px; }
.score-row { padding: 10px 0; display: flex; justify-content: space-between; border-top: 1px solid var(--line); font-size: 12px; }
.score-row b { font-family: var(--mono); }
.mini-calendar { position: absolute; right: 36px; bottom: 42px; left: 36px; display: grid; grid-template-columns: repeat(5, 1fr); gap: 7px; }
.mini-calendar div { min-height: 110px; padding: 14px 8px; display: flex; flex-direction: column; justify-content: space-between; border: 1px solid rgb(255 255 255 / 28%); text-align: center; }
.mini-calendar span { font-family: var(--mono); font-size: 8px; }
.mini-calendar strong { font-family: var(--display); font-size: 28px; }
.mini-calendar .is-active { color: var(--purple); background: #fff; }
.campus-stat { position: absolute; right: 42px; bottom: 38px; left: 42px; display: grid; grid-template-columns: 1fr auto; align-items: end; border-top: 1px solid rgb(255 255 255 / 35%); }
.campus-stat > span { padding-top: 18px; align-self: start; font-family: var(--mono); font-size: 9px; letter-spacing: .14em; }
.campus-stat strong { grid-row: span 2; font-family: var(--display); font-size: clamp(96px, 11vw, 160px); font-weight: 500; line-height: .82; }
.campus-stat small { font-size: 12px; }
.tool-stack { height: 330px; position: relative; }
.tool-stack span { width: 250px; height: 78px; position: absolute; display: grid; place-items: center; color: #fff; background: var(--ink); border: 1px solid #fff; font-family: var(--display); font-size: 24px; box-shadow: 10px 10px 0 var(--purple); }
.tool-stack span:nth-child(1) { top: 10px; left: 10%; transform: rotate(-5deg); }
.tool-stack span:nth-child(2) { top: 112px; right: 4%; transform: rotate(4deg); }
.tool-stack span:nth-child(3) { bottom: 10px; left: 18%; transform: rotate(-2deg); }
.feature-note { margin: 28px 0 0; color: rgb(255 255 255 / 48%); font-size: 12px; }

.news-grid { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(360px, .95fr); gap: clamp(32px, 6vw, 96px); }
.news-feature { min-height: 630px; padding: clamp(30px, 4vw, 56px); position: relative; display: flex; flex-direction: column; justify-content: space-between; overflow: hidden; color: #fff; background: var(--orange); transition: transform 220ms ease, box-shadow 220ms ease; }
.news-feature:hover { transform: translate(-5px, -5px); box-shadow: 12px 12px 0 var(--ink); }
.news-feature::after { content: "招"; position: absolute; right: -.03em; bottom: -.2em; color: rgb(255 255 255 / 12%); font-family: var(--display); font-size: min(40vw, 500px); line-height: 1; }
.news-meta { display: flex; align-items: center; justify-content: space-between; font-family: var(--mono); font-size: 10px; letter-spacing: .08em; text-transform: uppercase; }
.news-feature-copy { position: relative; z-index: 1; }
.news-feature h3 { margin-bottom: 28px; font-family: var(--display); font-size: clamp(45px, 5vw, 72px); font-weight: 500; letter-spacing: -.055em; line-height: 1.06; }
.news-feature p { max-width: 420px; margin-bottom: 0; }
.news-arrow { position: absolute; right: 0; bottom: 0; font-size: 42px; }
.news-list article { padding: 0 0 38px; margin-bottom: 38px; border-bottom: 1px solid var(--ink); }
.news-list article:last-child { margin-bottom: 0; }
.news-list h3 { margin: 34px 0 12px; font-family: var(--display); font-size: clamp(28px, 3vw, 42px); font-weight: 500; letter-spacing: -.035em; line-height: 1.2; }
.news-list p { max-width: 540px; margin-bottom: 0; color: var(--muted); }

.team { background: var(--lilac); }
.team-intro { margin-bottom: clamp(64px, 9vw, 120px); display: grid; grid-template-columns: 1fr minmax(300px, .65fr); gap: 80px; align-items: end; }
.department-list { border-top: 1px solid var(--ink); }
.department { min-height: 210px; padding: 34px 0; display: grid; grid-template-columns: 120px minmax(160px, .45fr) minmax(300px, 1fr) 210px; gap: 28px; align-items: center; border-bottom: 1px solid var(--ink); transition: padding 220ms ease, background 220ms ease; }
.department:hover { padding-inline: 24px; background: rgb(255 255 255 / 42%); }
.department-code { font-family: var(--mono); font-size: 12px; letter-spacing: .12em; }
.department h3 { margin: 0; font-family: var(--display); font-size: clamp(34px, 3.6vw, 54px); font-weight: 500; }
.department p { max-width: 520px; margin: 0; color: #575362; }
.department-action { justify-self: end; display: flex; align-items: center; gap: 12px; }
.department-open { padding: 8px 12px; border: 1px solid var(--ink); border-radius: 999px; font-size: 11px; font-weight: 700; }
.department-arrow { font-size: 26px; transition: transform 180ms ease; }
.department:hover .department-arrow { transform: translate(4px, -4px); }

.department-page { --dept-accent: #d9ff6c; --dept-accent-deep: #6b7d24; background: #f4f5f7; }
.department-page-ops {
  --dept-accent: #ff835f;
  --dept-accent-deep: #8d2f13;
  --ops-yellow: #ffd84d;
  --ops-cobalt: #5557e8;
  --ops-sky: #78cfff;
  --ops-mint: #9be4bc;
  --ops-cream: #fff7ec;
}
.department-page-care { --dept-accent: #68c6ff; --dept-accent-deep: #07527f; }
.department-page .site-header { background: rgb(244 245 247 / 94%); }
.department-header { border-bottom-color: var(--line); }
.back-home { padding: 10px 0 8px; display: inline-flex; align-items: center; gap: 9px; border-bottom: 1px solid currentColor; font-size: 13px; font-weight: 700; }
.back-home span { font-size: 18px; transition: transform 180ms ease; }
.back-home:hover span { transform: translate(-3px, 3px); }
.dept-hero, .dept-section { width: 100%; min-height: 100svh; padding: clamp(72px, 9vw, 140px) var(--gutter); }
.dept-hero { min-height: calc(100svh - var(--header-height)); position: relative; display: grid; grid-template-columns: minmax(0, 1.18fr) minmax(360px, .62fr); gap: clamp(48px, 9vw, 140px); align-items: center; overflow: hidden; border-bottom: 1px solid var(--ink); }
.dept-hero::before { content: ""; position: absolute; top: 0; right: 28%; bottom: 0; width: 1px; background: var(--line); }
.dept-coordinate { margin-bottom: clamp(52px, 7vw, 90px); padding-top: 12px; display: flex; justify-content: space-between; border-top: 1px solid var(--ink); font-family: var(--mono); font-size: 10px; letter-spacing: .12em; }
.dept-kicker { margin-bottom: 22px; font-size: clamp(16px, 1.4vw, 20px); font-weight: 700; }
.dept-hero h1 { margin-bottom: 36px; font-family: var(--display); font-size: clamp(92px, 14vw, 250px); font-weight: 500; letter-spacing: -.1em; line-height: .72; }
.dept-lead { max-width: 680px; margin-bottom: 34px; color: var(--muted); font-size: clamp(17px, 1.5vw, 22px); }
.dept-hero-actions { display: flex; align-items: center; gap: 24px; font-family: var(--mono); font-size: 11px; }
.dept-button { color: var(--ink); background: var(--dept-accent); border-color: var(--ink); }
.dept-button:hover { color: #fff; background: var(--ink); }
.dept-boundary { max-width: 760px; margin: 32px 0 0; padding-top: 18px; display: grid; grid-template-columns: 100px 1fr; gap: 18px; border-top: 1px solid var(--ink); font-size: 12px; line-height: 1.65; }
.dept-boundary strong { font-family: var(--mono); font-size: 10px; letter-spacing: .1em; }
.dept-boundary span { color: var(--muted); }
.dept-emblem { width: min(34vw, 520px); aspect-ratio: 1; justify-self: center; position: relative; display: grid; place-items: center; background: var(--dept-accent); border: 1px solid var(--ink); border-radius: 50%; box-shadow: clamp(12px, 1.6vw, 26px) clamp(12px, 1.6vw, 26px) 0 var(--ink); }
.dept-emblem img { width: 78%; aspect-ratio: 1; object-fit: cover; border: 1px solid var(--ink); border-radius: 50%; filter: saturate(.9); }
.dept-emblem span { position: absolute; right: -4%; bottom: 8%; padding: 9px 14px; color: #fff; background: var(--ink); border: 1px solid var(--ink); font-family: var(--mono); font-size: 12px; font-weight: 700; letter-spacing: .08em; transform: rotate(-5deg); }
.dept-section { display: flex; flex-direction: column; justify-content: center; }
.dept-section-head { margin-bottom: clamp(56px, 8vw, 108px); padding-top: 13px; display: flex; justify-content: space-between; border-top: 1px solid currentColor; font-family: var(--mono); font-size: 10px; letter-spacing: .12em; }
.dept-overview { color: #fff; background: var(--ink); }
.dept-overview-grid { display: grid; grid-template-columns: minmax(340px, .9fr) minmax(520px, 1.1fr); gap: clamp(64px, 10vw, 160px); align-items: start; }
.dept-overview h2, .resource-heading h2 { margin-bottom: 0; font-family: var(--display); font-size: clamp(52px, 6.2vw, 104px); font-weight: 500; letter-spacing: -.06em; line-height: 1.02; }
.dept-facts { border-top: 1px solid rgb(255 255 255 / 35%); }
.dept-facts article { min-height: 170px; padding: 28px 0; display: grid; grid-template-columns: 54px minmax(160px, .45fr) 1fr; gap: 20px; align-items: start; border-bottom: 1px solid rgb(255 255 255 / 35%); }
.dept-facts article > span { padding-top: 7px; color: var(--dept-accent); font-family: var(--mono); font-size: 11px; }
.dept-facts h3 { margin-bottom: 0; font-family: var(--display); font-size: clamp(27px, 2.3vw, 38px); font-weight: 500; }
.dept-facts p { margin-bottom: 0; color: rgb(255 255 255 / 62%); }
.dept-resources { background: var(--dept-accent); }
.resource-heading { margin-bottom: clamp(54px, 7vw, 90px); display: grid; grid-template-columns: 1fr minmax(300px, .5fr); gap: 60px; align-items: end; }
.resource-heading p { max-width: 480px; margin-bottom: 0; color: rgb(23 21 31 / 68%); font-size: 17px; }
.resource-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--ink); border-left: 1px solid var(--ink); }
.resource-card { min-height: 340px; padding: clamp(24px, 3vw, 44px); display: flex; flex-direction: column; border-right: 1px solid var(--ink); border-bottom: 1px solid var(--ink); background: rgb(255 255 255 / 18%); transition: background 180ms ease, transform 180ms ease; }
.resource-card:hover { position: relative; z-index: 1; background: rgb(255 255 255 / 48%); transform: translateY(-8px); }
.resource-type { margin-bottom: auto; font-family: var(--mono); font-size: 10px; letter-spacing: .14em; }
.resource-card strong { margin: 58px 0 18px; font-family: var(--display); font-size: clamp(28px, 2.5vw, 42px); font-weight: 500; line-height: 1.1; }
.resource-card p { color: rgb(23 21 31 / 66%); }
.resource-status { width: fit-content; margin-top: 18px; padding: 5px 9px; color: #fff; background: var(--ink); font-family: var(--mono); font-size: 9px; letter-spacing: .08em; }
.plan-disclaimer { margin: 24px 0 0; color: rgb(23 21 31 / 58%); font-family: var(--mono); font-size: 9px; letter-spacing: .06em; }
.dept-opportunity { background: #fff; }
.promise-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--ink); border-left: 1px solid var(--ink); }
.promise-card { min-height: 360px; padding: clamp(26px, 3vw, 44px); display: flex; flex-direction: column; border-right: 1px solid var(--ink); border-bottom: 1px solid var(--ink); }
.promise-card > span { margin-bottom: auto; color: var(--dept-accent-deep); font-family: var(--mono); font-size: 10px; font-weight: 700; letter-spacing: .14em; }
.promise-card strong { margin: 64px 0 18px; font-family: var(--display); font-size: clamp(30px, 2.7vw, 44px); font-weight: 500; line-height: 1.08; }
.promise-card p { margin-bottom: 0; color: var(--muted); }
.dept-principles { background: #e7e9f0; }
.principles-layout { display: grid; grid-template-columns: minmax(340px, .82fr) minmax(520px, 1.18fr); gap: clamp(64px, 10vw, 160px); align-items: start; }
.principles-layout > .resource-heading { margin: 0; display: block; }
.principles-layout > .resource-heading p { margin-top: 32px; }
.principles-list { border-top: 1px solid var(--ink); }
.principles-list article { min-height: 145px; padding: 26px 0; display: grid; grid-template-columns: 54px 1fr; gap: 24px; border-bottom: 1px solid var(--ink); }
.principles-list article > span { padding-top: 7px; font-family: var(--mono); font-size: 10px; }
.principles-list h3 { margin-bottom: 8px; font-family: var(--display); font-size: clamp(25px, 2.2vw, 36px); font-weight: 500; }
.principles-list p { margin-bottom: 0; color: var(--muted); }
.faq-list { border-top: 1px solid var(--ink); }
.faq-list details { border-bottom: 1px solid var(--ink); }
.faq-list summary { min-height: 94px; padding: 24px 56px 24px 0; position: relative; display: flex; align-items: center; gap: 28px; cursor: pointer; font-family: var(--display); font-size: clamp(22px, 2.3vw, 34px); line-height: 1.3; list-style: none; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: "+"; position: absolute; right: 8px; font-family: var(--sans); font-size: 30px; font-weight: 300; transition: transform 180ms ease; }
.faq-list details[open] summary::after { transform: rotate(45deg); }
.faq-list summary span { flex: 0 0 58px; font-family: var(--mono); font-size: 10px; font-weight: 700; letter-spacing: .1em; }
.faq-list details > p { max-width: 920px; margin: 0 0 28px 86px; color: rgb(23 21 31 / 68%); font-size: 16px; }
.feedback-section { color: #fff; background: var(--ink); }
.feedback-section .resource-heading p { color: rgb(255 255 255 / 62%); }
.feedback-flow { margin: 0; padding: 0; display: grid; grid-template-columns: repeat(5, 1fr); border-top: 1px solid rgb(255 255 255 / 42%); border-left: 1px solid rgb(255 255 255 / 42%); list-style: none; }
.feedback-flow li { min-height: 310px; padding: clamp(22px, 2.5vw, 36px); display: flex; flex-direction: column; border-right: 1px solid rgb(255 255 255 / 42%); border-bottom: 1px solid rgb(255 255 255 / 42%); }
.feedback-flow li > span { margin-bottom: auto; color: var(--dept-accent); font-family: var(--mono); font-size: 10px; }
.feedback-flow strong { display: block; margin: 54px 0 14px; font-family: var(--display); font-size: clamp(24px, 2.1vw, 34px); font-weight: 500; }
.feedback-flow p { margin-bottom: 0; color: rgb(255 255 255 / 58%); font-size: 14px; }
.care-examples { background: #e7e9f0; }
.example-grid { display: grid; grid-template-columns: 1.2fr .9fr .9fr; gap: 18px; }
.message-example { min-height: 390px; padding: clamp(26px, 3vw, 42px); display: flex; flex-direction: column; background: #fff; border: 1px solid var(--ink); box-shadow: 9px 9px 0 var(--dept-accent); }
.message-example > span { font-family: var(--mono); font-size: 10px; font-weight: 700; letter-spacing: .1em; }
.message-example blockquote { margin: auto 0 0; font-family: var(--display); font-size: clamp(20px, 1.9vw, 30px); line-height: 1.55; }
.ops-domain-intro { display: grid; grid-template-columns: minmax(340px, .72fr) minmax(600px, 1.28fr); gap: clamp(64px, 9vw, 140px); }
.ops-domain-intro > h2 { margin: 0; font-family: var(--display); font-size: clamp(52px, 6.2vw, 104px); font-weight: 500; letter-spacing: -.06em; line-height: 1.02; }
.ops-domain-grid { display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid rgb(255 255 255 / 40%); border-left: 1px solid rgb(255 255 255 / 40%); }
.ops-domain-card { min-height: 520px; padding: clamp(28px, 3.4vw, 52px); border-right: 1px solid rgb(255 255 255 / 40%); border-bottom: 1px solid rgb(255 255 255 / 40%); }
.ops-domain-card > span { color: var(--dept-accent); font-family: var(--mono); font-size: 10px; letter-spacing: .12em; }
.ops-domain-card h3 { margin: 72px 0 22px; font-family: var(--display); font-size: clamp(38px, 3.7vw, 58px); font-weight: 500; }
.ops-domain-card p { color: rgb(255 255 255 / 64%); }
.ops-domain-card ul { margin: 34px 0 0; padding: 0; list-style: none; }
.ops-domain-card li { padding: 10px 0; border-top: 1px solid rgb(255 255 255 / 24%); font-size: 13px; }
.handoff-flow { margin: 0 0 clamp(58px, 8vw, 110px); padding: 0; display: grid; grid-template-columns: repeat(5, 1fr); list-style: none; border-top: 1px solid var(--ink); border-left: 1px solid var(--ink); }
.handoff-flow li { min-height: 190px; padding: 24px; display: flex; flex-direction: column; justify-content: space-between; border-right: 1px solid var(--ink); border-bottom: 1px solid var(--ink); }
.handoff-flow li::after { content: "→"; align-self: flex-end; font-size: 24px; }
.handoff-flow li:last-child::after { content: "✓"; }
.handoff-flow li.is-core { color: #fff; background: var(--ink); }
.handoff-flow span { font-family: var(--mono); font-size: 9px; letter-spacing: .1em; }
.handoff-flow strong { max-width: 160px; font-family: var(--display); font-size: 24px; font-weight: 500; line-height: 1.2; }
.ops-responsibility-grid { display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid var(--ink); border-left: 1px solid var(--ink); }
.ops-responsibility-grid article { min-height: 280px; padding: clamp(26px, 3.5vw, 48px); border-right: 1px solid var(--ink); border-bottom: 1px solid var(--ink); }
.ops-responsibility-grid span { font-family: var(--mono); font-size: 9px; letter-spacing: .12em; }
.ops-responsibility-grid h3 { margin: 62px 0 14px; font-family: var(--display); font-size: clamp(30px, 3vw, 46px); font-weight: 500; }
.ops-responsibility-grid p { max-width: 580px; margin-bottom: 0; color: rgb(23 21 31 / 66%); }
.ops-community { background: #fff; }
.community-ledger { border-top: 1px solid var(--ink); }
.community-ledger article { min-height: 150px; padding: 28px 0; display: grid; grid-template-columns: 100px minmax(260px, .55fr) 1fr; gap: 30px; align-items: start; border-bottom: 1px solid var(--ink); }
.community-ledger article > span { padding-top: 8px; font-family: var(--mono); font-size: 10px; font-weight: 700; letter-spacing: .12em; }
.community-ledger h3 { margin: 0; font-family: var(--display); font-size: clamp(28px, 2.7vw, 42px); font-weight: 500; }
.community-ledger p { max-width: 620px; margin: 7px 0 0; color: var(--muted); }
.ops-closing { max-width: 920px; margin: clamp(54px, 7vw, 86px) 0 0 auto; font-family: var(--display); font-size: clamp(28px, 3.5vw, 52px); line-height: 1.35; }

/* Operations page: a lively product desk assembled from color-coded work cards. */
.department-page-ops .site-header { background: rgb(255 247 236 / 94%); }
.department-page-ops .dept-hero { z-index: 0; background: var(--ops-cream); isolation: isolate; }
.department-page-ops .dept-hero::before { z-index: -2; top: 9%; right: -3%; bottom: auto; width: 34%; height: 76%; background: var(--ops-yellow); border: 1px solid var(--ink); transform: rotate(2deg); }
.department-page-ops .dept-hero::after { content: ""; position: absolute; z-index: -1; right: 25%; bottom: 14%; width: clamp(110px, 12vw, 210px); aspect-ratio: 1; background: var(--ops-sky); border: 1px solid var(--ink); border-radius: 50%; }
.department-page-ops .dept-hero-copy { position: relative; z-index: 2; }
.department-page-ops .dept-hero h1 { width: fit-content; position: relative; z-index: 0; }
.department-page-ops .dept-hero h1::after { content: ""; position: absolute; z-index: -1; right: -.12em; bottom: -.12em; left: .05em; height: .22em; background: var(--ops-mint); border: 1px solid var(--ink); transform: rotate(-2deg); }
.department-page-ops .dept-kicker { width: fit-content; padding: 7px 11px; background: var(--ops-sky); border: 1px solid var(--ink); transform: rotate(-1deg); }
.department-page-ops .dept-button { background: var(--ops-yellow); box-shadow: 6px 6px 0 var(--ops-cobalt); }
.department-page-ops .dept-button:hover { color: #fff; background: var(--ops-cobalt); box-shadow: 2px 2px 0 var(--ink); transform: translate(4px, 4px); }
.department-page-ops .dept-boundary { padding: 18px; background: rgb(120 207 255 / 36%); border: 1px solid var(--ink); }
.department-page-ops .dept-boundary span { color: var(--ink); }
.department-page-ops .dept-emblem { z-index: 1; background: var(--dept-accent); box-shadow: clamp(12px, 1.4vw, 22px) clamp(12px, 1.4vw, 22px) 0 var(--ops-cobalt), clamp(24px, 2.8vw, 44px) clamp(24px, 2.8vw, 44px) 0 var(--ink); }
.department-page-ops .dept-emblem span { color: var(--ink); background: var(--ops-mint); transform: rotate(5deg); }
.ops-color-key { margin-top: 22px; display: flex; flex-wrap: wrap; gap: 8px; }
.ops-color-key span { padding: 7px 10px; border: 1px solid var(--ink); font-family: var(--mono); font-size: 9px; font-weight: 700; letter-spacing: .08em; }
.ops-color-key span:nth-child(1) { background: var(--ops-yellow); }
.ops-color-key span:nth-child(2) { color: #fff; background: var(--ops-cobalt); }
.ops-color-key span:nth-child(3) { background: var(--ops-sky); }
.ops-color-key span:nth-child(4) { background: var(--ops-mint); }
.ops-ribbon { position: absolute; z-index: 3; right: -2%; bottom: 4%; width: min(48vw, 820px); padding: 11px 0; display: flex; justify-content: space-around; gap: 26px; overflow: hidden; color: #fff; background: var(--ops-cobalt); border-block: 1px solid var(--ink); font-family: var(--mono); font-size: 9px; font-weight: 700; letter-spacing: .14em; white-space: nowrap; transform: rotate(-3deg); }
.department-page-ops .dept-overview { background: #17151f; }
.department-page-ops .ops-domain-intro > h2 { position: relative; }
.department-page-ops .ops-domain-intro > h2::after { content: "OPS / 02"; width: fit-content; margin-top: 34px; padding: 9px 12px; display: block; color: var(--ink); background: var(--ops-mint); border: 1px solid #fff; font-family: var(--mono); font-size: 10px; font-weight: 700; letter-spacing: .12em; transform: rotate(-2deg); }
.department-page-ops .ops-domain-grid { border-color: var(--ink); box-shadow: 14px 14px 0 var(--dept-accent); }
.department-page-ops .ops-domain-card { color: var(--ink); border-color: var(--ink); }
.department-page-ops .ops-domain-card:first-child { background: var(--ops-sky); }
.department-page-ops .ops-domain-card:last-child { background: var(--ops-yellow); }
.department-page-ops .ops-domain-card > span { width: fit-content; padding: 6px 9px; color: #fff; background: var(--ops-cobalt); border: 1px solid var(--ink); }
.department-page-ops .ops-domain-card p { color: rgb(23 21 31 / 72%); }
.department-page-ops .ops-domain-card li { border-color: rgb(23 21 31 / 28%); }
.department-page-ops .ops-product { background: var(--dept-accent); }
.department-page-ops .handoff-flow { box-shadow: 12px 12px 0 var(--ink); }
.department-page-ops .handoff-flow li:nth-child(1) { color: var(--ink); background: var(--ops-sky); }
.department-page-ops .handoff-flow li:nth-child(2) { color: var(--ink); background: var(--ops-mint); }
.department-page-ops .handoff-flow li:nth-child(3) { color: #fff; background: var(--ops-cobalt); }
.department-page-ops .handoff-flow li:nth-child(4) { color: var(--ink); background: var(--ops-yellow); }
.department-page-ops .handoff-flow li:nth-child(5) { color: #fff; background: var(--ink); }
.department-page-ops .ops-responsibility-grid article { transition: transform 180ms ease, box-shadow 180ms ease; }
.department-page-ops .ops-responsibility-grid article:nth-child(1) { background: var(--ops-yellow); }
.department-page-ops .ops-responsibility-grid article:nth-child(2) { background: var(--ops-sky); }
.department-page-ops .ops-responsibility-grid article:nth-child(3) { background: var(--ops-mint); }
.department-page-ops .ops-responsibility-grid article:nth-child(4) { color: #fff; background: var(--ops-cobalt); }
.department-page-ops .ops-responsibility-grid article:nth-child(4) p { color: rgb(255 255 255 / 76%); }
.department-page-ops .ops-responsibility-grid article:hover { z-index: 1; box-shadow: 8px 8px 0 var(--ink); transform: translate(-4px, -4px); }
.department-page-ops .ops-community { background: var(--ops-sky); }
.department-page-ops .community-ledger { border-top: 0; display: grid; gap: 12px; }
.department-page-ops .community-ledger article { padding: 28px; border: 1px solid var(--ink); }
.department-page-ops .community-ledger article:nth-child(1) { background: var(--ops-yellow); }
.department-page-ops .community-ledger article:nth-child(2) { background: var(--ops-mint); }
.department-page-ops .community-ledger article:nth-child(3) { background: var(--ops-cream); }
.department-page-ops .community-ledger article:nth-child(4) { color: #fff; background: var(--ops-cobalt); }
.department-page-ops .community-ledger article:nth-child(4) p { color: rgb(255 255 255 / 76%); }
.department-page-ops .community-ledger article > span { width: fit-content; padding: 7px 9px; color: #fff; background: var(--ink); }
.department-page-ops .ops-closing { padding: clamp(28px, 4vw, 52px); color: #fff; background: var(--ink); box-shadow: 14px 14px 0 var(--ops-yellow); transform: rotate(-1deg); }
.department-footer { background: var(--ink); }

.changelog { color: #fff; background: var(--ink); }
.changelog-layout { display: grid; grid-template-columns: minmax(300px, .75fr) minmax(500px, 1.25fr); gap: clamp(70px, 10vw, 160px); }
.changelog-heading { position: sticky; top: calc(var(--header-height) + 32px); align-self: start; }
.changelog-heading p { max-width: 410px; margin-top: 32px; color: rgb(255 255 255 / 58%); font-size: 17px; }
.version-list { margin: 0; padding: 0; list-style: none; }
.version-item { min-height: 200px; padding: 38px 0; display: grid; grid-template-columns: 160px 1fr 28px; gap: 28px; border-top: 1px solid rgb(255 255 255 / 28%); }
.version-number span, .version-number strong { display: block; }
.version-number span { margin-bottom: 12px; color: rgb(255 255 255 / 46%); font-family: var(--mono); font-size: 9px; letter-spacing: .12em; }
.version-number strong { font-family: var(--mono); font-size: 21px; }
.version-copy h3 { margin-bottom: 12px; font-family: var(--display); font-size: clamp(28px, 3vw, 40px); font-weight: 500; }
.version-copy p { max-width: 510px; margin: 0; color: rgb(255 255 255 / 58%); }
.version-mark { color: rgb(255 255 255 / 35%); font-size: 20px; }
.version-item.is-current .version-mark, .version-item.is-current .version-number strong { color: var(--orange); }

.join { color: #fff; background: var(--purple); }
.join-topline { margin-bottom: clamp(64px, 9vw, 120px); padding-top: 14px; display: flex; justify-content: space-between; border-top: 1px solid rgb(255 255 255 / 60%); font-family: var(--mono); font-size: 11px; letter-spacing: .12em; }
.join-layout { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(430px, .8fr); gap: clamp(56px, 9vw, 140px); align-items: end; }
.join-title { margin-bottom: 38px; font-family: var(--display); font-size: clamp(70px, 9.5vw, 142px); font-weight: 500; letter-spacing: -.075em; line-height: .92; }
.join-title em { color: var(--orange); font-weight: inherit; }
.join-lead { max-width: 620px; margin-bottom: 0; color: rgb(255 255 255 / 76%); font-size: clamp(17px, 1.6vw, 21px); }
.join-panel { color: var(--ink); background: #fff; border: 1px solid var(--ink); box-shadow: 14px 14px 0 var(--orange); }
.join-audience, .join-counts, .join-action { padding: 28px; }
.join-audience { border-bottom: 1px solid var(--ink); }
.join-audience span { font-family: var(--mono); font-size: 10px; letter-spacing: .12em; }
.join-audience strong { margin: 20px 0 4px; display: block; font-family: var(--display); font-size: clamp(52px, 6vw, 78px); font-weight: 500; line-height: 1; }
.join-audience p { margin: 0; color: var(--muted); }
.join-counts { display: grid; grid-template-columns: repeat(3, 1fr); border-bottom: 1px solid var(--ink); }
.join-counts div { padding-inline: 18px; border-right: 1px solid var(--line); text-align: center; }
.join-counts div:first-child { padding-left: 0; }
.join-counts div:last-child { padding-right: 0; border-right: 0; }
.join-counts strong, .join-counts span { display: block; }
.join-counts strong { font-family: var(--display); font-size: 48px; font-weight: 500; line-height: 1; }
.join-counts span { margin-top: 8px; font-size: 11px; }
.join-action { display: grid; grid-template-columns: 112px 1fr; gap: 24px; align-items: center; }
.form-mark { aspect-ratio: 1; display: grid; place-content: center; color: #fff; background: var(--ink); border: 1px solid var(--ink); text-align: center; transform: rotate(-3deg); }
.form-mark span, .form-mark small { display: block; }
.form-mark span { font-family: var(--mono); font-size: 18px; font-weight: 700; letter-spacing: .08em; }
.form-mark small { margin-top: 4px; color: rgb(255 255 255 / 62%); font-size: 9px; }
.join-action strong { display: block; font-family: var(--display); font-size: 28px; }
.join-action p { margin: 2px 0 10px; color: var(--muted); font-size: 12px; }
.join-form-link { display: inline-flex; align-items: center; gap: 8px; padding-bottom: 4px; border-bottom: 1px solid var(--ink); font-size: 12px; font-weight: 800; }

.site-footer { padding: 56px var(--gutter) 28px; color: #fff; background: var(--ink); display: grid; grid-template-columns: 1fr auto; gap: 64px; }
.footer-brand { display: flex; gap: 14px; align-items: center; }
.footer-brand strong, .footer-brand span { display: block; }
.footer-brand strong { font-size: 17px; letter-spacing: .08em; }
.footer-brand div > span { margin-top: 4px; color: rgb(255 255 255 / 52%); font-size: 11px; }
.footer-links { display: flex; align-items: center; gap: 30px; font-size: 13px; }
.footer-meta { grid-column: 1 / -1; padding-top: 24px; display: flex; justify-content: space-between; color: rgb(255 255 255 / 42%); border-top: 1px solid rgb(255 255 255 / 18%); font-family: var(--mono); font-size: 9px; letter-spacing: .08em; }
.footer-filing { color: rgb(255 255 255 / 64%); transition: color 180ms ease; }
.footer-filing:hover { color: #fff; }

.js .reveal { opacity: 0; transform: translateY(24px); transition: opacity 700ms cubic-bezier(.22,1,.36,1), transform 700ms cubic-bezier(.22,1,.36,1); }
.js .reveal.is-visible { opacity: 1; transform: translateY(0); }

@media (min-width: 1600px) {
  .section-title { font-size: clamp(72px, 5.2vw, 120px); }
  .section-lead { max-width: 680px; }
  .manifesto-grid { grid-template-columns: minmax(0, 1.25fr) minmax(420px, .55fr); }
  .manifesto-copy { max-width: 680px; justify-self: end; }
  .feature-card { min-height: 590px; }
  .feature-card-wide { min-height: 650px; grid-template-columns: minmax(0, 1.15fr) minmax(420px, .7fr); }
  .feature-card p { max-width: 680px; }
  .transcript-card { width: min(100%, 520px); }
  .news-grid { grid-template-columns: minmax(0, .95fr) minmax(520px, 1.05fr); }
  .news-feature { min-height: 680px; }
  .department { grid-template-columns: 140px minmax(240px, .45fr) minmax(420px, 1fr) 200px; }
  .department p { max-width: 680px; }
  .changelog-layout { grid-template-columns: minmax(380px, .65fr) minmax(680px, 1.35fr); }
  .version-item { grid-template-columns: 200px 1fr 28px; }
  .version-copy p { max-width: 680px; }
  .join-layout { grid-template-columns: minmax(0, 1.2fr) minmax(520px, .65fr); }
  .join-panel { width: min(100%, 720px); justify-self: end; }
  .join-lead { max-width: 760px; }
}

@media (min-width: 1001px) and (orientation: landscape) {
  html { scroll-snap-type: y proximity; }
  main > section, .hero-stage { scroll-snap-align: start; }
  .section-shell { padding-block: clamp(64px, 8svh, 112px); }
  .section-tag { margin-bottom: clamp(40px, 6svh, 76px); }
}

@media (max-width: 1100px) {
  .department-page-ops .ops-domain-intro { grid-template-columns: 1fr; gap: 54px; }
}

@media (max-width: 1000px) {
  :root { --gutter: 20px; }
  .manifesto-grid, .section-heading-row, .team-intro, .changelog-layout, .join-layout { grid-template-columns: 1fr; }
  .hero-intro { margin-left: clamp(0px, 18vw, 180px); }
  .feature-card-wide { grid-template-columns: 1fr .85fr; gap: 36px; }
  .news-grid { grid-template-columns: 1fr; }
  .news-feature { min-height: 520px; }
  .department { grid-template-columns: 74px 180px 1fr; }
  .department-action { grid-column: 3; justify-self: start; }
  .dept-hero { grid-template-columns: 1fr minmax(280px, .65fr); }
  .dept-overview-grid { grid-template-columns: 1fr; }
  .resource-heading { grid-template-columns: 1fr; }
  .principles-layout, .ops-domain-intro { grid-template-columns: 1fr; }
  .promise-grid { grid-template-columns: 1fr; }
  .promise-card { min-height: 280px; }
  .feedback-flow { grid-template-columns: repeat(2, 1fr); }
  .example-grid { grid-template-columns: 1fr; }
  .ops-domain-intro { gap: 54px; }
  .handoff-flow { grid-template-columns: repeat(3, 1fr); }
  .community-ledger article { grid-template-columns: 80px 1fr; }
  .community-ledger p { grid-column: 2; }
  .changelog-heading { position: static; }
  .join-layout { align-items: start; }
  .join-panel { width: min(100%, 660px); }
}

@media (max-width: 760px) {
  :root { --gutter: 16px; --header-height: 68px; }
  .notice-strip { min-height: 44px; padding-inline: 16px; justify-content: space-between; gap: 10px; font-size: 10px; }
  .notice-strip p { max-width: 240px; line-height: 1.35; }
  .notice-strip a { padding-left: 0; border-left: 0; white-space: nowrap; }
  .site-header { padding-inline: 16px; }
  .brand { grid-template-columns: 36px auto; column-gap: 9px; }
  .brand-mark { width: 36px; height: 36px; font-size: 17px; }
  .brand-name { font-size: 14px; }
  .brand-en { display: none; }
  .menu-toggle { padding: 8px 0 8px 12px; display: flex; align-items: center; gap: 10px; background: none; border: 0; cursor: pointer; font-size: 12px; font-weight: 700; }
  .menu-icon { width: 24px; display: grid; gap: 5px; }
  .menu-icon i { height: 1px; display: block; background: currentColor; transition: transform 180ms ease; }
  .menu-toggle[aria-expanded="true"] .menu-icon i:first-child { transform: translateY(3px) rotate(45deg); }
  .menu-toggle[aria-expanded="true"] .menu-icon i:last-child { transform: translateY(-3px) rotate(-45deg); }
  .site-nav { position: absolute; z-index: 10; top: 100%; right: 0; left: 0; width: 100%; height: calc(100dvh - var(--header-height)); min-height: 420px; padding: 48px 24px; flex-direction: column; align-items: stretch; gap: 0; overflow-y: auto; overscroll-behavior: contain; color: var(--ink); background: #f4f5f7; border-top: 1px solid var(--ink); box-shadow: 0 32px 64px rgb(23 21 31 / 16%); visibility: hidden; opacity: 0; transform: translateY(-10px); transition: opacity 180ms ease, transform 180ms ease, visibility 180ms; }
  .site-nav.is-open { visibility: visible; opacity: 1; transform: translateY(0); }
  .site-nav > a { padding: 17px 0; border-bottom: 1px solid var(--line); font-family: var(--display); font-size: 34px; font-weight: 500; }
  .site-nav > a:not(.nav-cta)::after { display: none; }
  .site-nav .nav-cta { margin-top: 28px; padding-inline: 20px; color: #fff; border: 0; border-radius: 0; font-family: var(--sans); font-size: 16px; text-align: center; }
  .section-shell { padding-block: 88px; }
  .section-tag { margin-bottom: 52px; }
  .section-title { font-size: clamp(42px, 13vw, 64px); }
  .section-heading-row { margin-bottom: 52px; gap: 28px; }
  .hero-copy { padding-top: 54px; }
  .hero-title { max-width: 100%; margin-bottom: 34px; font-size: clamp(62px, 18.5vw, 88px); line-height: .94; }
  .hero-title span:nth-child(2) { margin-left: 0; }
  .hero-intro { margin-left: 0; }
  .hero-actions { align-items: stretch; flex-direction: column; gap: 12px; }
  .text-link { align-self: flex-start; }
  .hero-stage { min-height: 650px; margin-top: 0; }
  .hero-word { top: 24%; font-size: 44vw; }
  .phone-shell { top: 52%; width: min(78vw, 310px); transform: translate(-50%, -50%) rotate(2deg); }
  .phone-screen { min-height: 550px; }
  .floating-card { width: 150px; padding: 15px; box-shadow: 6px 6px 0 var(--ink); }
  .floating-card-room { top: 8%; left: 18px; }
  .floating-card-version { right: 18px; bottom: 5%; }
  .floating-label { margin-bottom: 12px; }
  .floating-card strong { font-size: 18px; }
  .orbit-label { display: none; }
  .manifesto-grid { gap: 42px; }
  .feature-grid { grid-template-columns: 1fr; }
  .feature-card, .feature-card-wide { min-height: 500px; grid-column: auto; grid-template-columns: 1fr; }
  .feature-card-wide { gap: 45px; }
  .feature-card h3 { font-size: 40px; }
  .feature-index, .feature-card-wide .feature-index { margin-bottom: 50px; }
  .transcript-card { width: 95%; justify-self: center; box-shadow: 9px 9px 0 var(--purple); }
  .mini-calendar { right: 22px; bottom: 26px; left: 22px; gap: 4px; }
  .mini-calendar div { min-height: 94px; padding: 10px 3px; }
  .mini-calendar strong { font-size: 22px; }
  .campus-stat { right: 24px; bottom: 26px; left: 24px; }
  .tool-stack { height: 280px; }
  .tool-stack span { width: 210px; }
  .news-feature { min-height: 490px; }
  .team-intro { gap: 28px; }
  .department { padding: 30px 0; grid-template-columns: 58px 1fr; gap: 16px; }
  .department p, .department-action { grid-column: 2; }
  .department-action { justify-self: start; }
  .department:hover { padding-inline: 12px; }
  .department-header .brand-en { display: none; }
  .back-home { font-size: 12px; }
  .dept-hero, .dept-section { padding: 56px 16px; }
  .dept-hero { grid-template-columns: 1fr; gap: 42px; }
  .dept-hero::before { display: none; }
  .dept-coordinate { margin-bottom: 36px; }
  .dept-hero h1 { margin-bottom: 24px; font-size: clamp(76px, 23vw, 110px); }
  .dept-lead { font-size: 16px; }
  .dept-emblem { width: min(58vw, 280px); order: -1; }
  .dept-boundary { grid-template-columns: 1fr; gap: 8px; }
  .dept-overview-grid { gap: 54px; }
  .dept-overview h2, .resource-heading h2 { font-size: clamp(46px, 13vw, 68px); }
  .dept-facts article { grid-template-columns: 42px 1fr; }
  .dept-facts article p { grid-column: 2; }
  .resource-heading { gap: 28px; }
  .resource-grid { grid-template-columns: 1fr; }
  .resource-card { min-height: 300px; }
  .promise-grid, .ops-domain-grid, .ops-responsibility-grid { grid-template-columns: 1fr; }
  .promise-card { min-height: 300px; }
  .principles-layout { gap: 54px; }
  .principles-list article { grid-template-columns: 38px 1fr; gap: 16px; }
  .faq-list summary { min-height: 84px; padding: 20px 44px 20px 0; display: block; font-size: 22px; }
  .faq-list summary span { margin-bottom: 8px; display: block; }
  .faq-list details > p { margin: 0 0 24px; font-size: 14px; }
  .feedback-flow, .handoff-flow { grid-template-columns: 1fr; }
  .feedback-flow li { min-height: 230px; }
  .message-example { min-height: 330px; box-shadow: 6px 6px 0 var(--dept-accent); }
  .ops-domain-intro > h2 { font-size: clamp(46px, 13vw, 68px); }
  .ops-domain-grid { grid-template-columns: 1fr; }
  .ops-domain-card { min-height: 460px; }
  .handoff-flow li { min-height: 160px; }
  .ops-responsibility-grid { grid-template-columns: 1fr; }
  .community-ledger article { grid-template-columns: 1fr; gap: 10px; }
  .community-ledger p { grid-column: 1; }
  .department-page-ops .dept-hero::before { display: block; top: 4%; right: -30%; width: 72%; height: 31%; }
  .department-page-ops .dept-hero::after { right: -8%; bottom: 29%; width: 120px; }
  .department-page-ops .dept-emblem { box-shadow: 10px 10px 0 var(--ops-cobalt), 20px 20px 0 var(--ink); }
  .ops-ribbon { right: -10%; bottom: 2%; width: 82vw; }
  .department-page-ops .ops-domain-grid { box-shadow: 8px 8px 0 var(--dept-accent); }
  .department-page-ops .community-ledger article { padding: 24px; }
  .department-page-ops .ops-closing { box-shadow: 8px 8px 0 var(--ops-yellow); }
  .changelog-layout { gap: 56px; }
  .version-item { grid-template-columns: 110px 1fr; gap: 18px; }
  .version-mark { display: none; }
  .join-topline { margin-bottom: 64px; }
  .join-title { font-size: clamp(62px, 17.5vw, 88px); }
  .join-layout { gap: 54px; }
  .join-panel { box-shadow: 8px 8px 0 var(--orange); }
  .join-audience, .join-counts, .join-action { padding: 22px; }
  .join-action { grid-template-columns: 88px 1fr; gap: 16px; }
  .join-action strong { font-size: 23px; }
  .site-footer { grid-template-columns: 1fr; gap: 38px; }
  .footer-links { flex-wrap: wrap; }
  .footer-meta { grid-column: 1; flex-direction: column; gap: 8px; }
}

@media (max-width: 420px) {
  .notice-strip p { max-width: 210px; }
  .phone-shell { width: 292px; }
  .floating-card-room { left: 8px; }
  .floating-card-version { right: 8px; }
  .feature-card { padding: 26px 22px; }
  .version-item { grid-template-columns: 1fr; }
  .join-counts strong { font-size: 38px; }
}

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