:root {
  --sky: #dceeff;
  --cloud: #f7fbff;
  --white: #ffffff;
  --cobalt: #154bb6;
  --cobalt-dark: #123f91;
  --ink: #10284a;
  --muted: #607b9f;
  --line: #c9dced;
  --cyan: #20a7d8;
  --teal: #1d8f86;
  --danger: #b34254;
  --radius: 16px;
  --shadow: 0 18px 55px rgba(63, 112, 162, .18);
  --font: "SF Pro Display", "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--cloud); font-family: var(--font); -webkit-font-smoothing: antialiased; }
button, input, select, textarea { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button { color: inherit; }
a { color: inherit; text-decoration: none; }
img, video { display: block; max-width: 100%; }
[hidden] { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

.skip-link { position: fixed; top: 8px; left: 8px; z-index: 1000; padding: 10px 14px; background: var(--ink); color: white; transform: translateY(-150%); }
.skip-link:focus { transform: translateY(0); }
:focus-visible { outline: 3px solid #0a76d5; outline-offset: 3px; }
.page-shell { width: min(1240px, calc(100% - 48px)); margin-inline: auto; }
.reference-home { display: none; }

.site-header { position: absolute; inset: 0 0 auto; z-index: 30; height: 74px; display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 34px; padding: 0 max(24px, calc((100vw - 1240px) / 2)); color: var(--ink); border-bottom: 1px solid rgba(255,255,255,.38); transition: background .25s, box-shadow .25s, transform .25s; }
.site-header.scrolled { position: fixed; background: rgba(247,251,255,.92); backdrop-filter: blur(16px); box-shadow: 0 8px 28px rgba(65,111,157,.12); border-bottom-color: rgba(25,72,121,.1); }
.brand, .app-brand { display: inline-flex; align-items: center; gap: 10px; border: 0; background: transparent; font-weight: 950; letter-spacing: -.04em; font-size: 25px; color: #1461cf; white-space: nowrap; cursor: pointer; }
.brand-orbit { width: 24px; height: 24px; display: inline-block; border: 2px solid var(--cobalt); border-radius: 50%; position: relative; }
.brand-orbit::before { content: ""; position: absolute; width: 7px; height: 7px; border-radius: 50%; background: var(--cyan); right: -4px; top: 2px; box-shadow: 0 0 0 3px rgba(255,255,255,.8); }
.public-nav { display: flex; justify-content: center; align-items: center; gap: 38px; font-size: 14px; font-weight: 650; }
.public-nav a { position: relative; padding: 27px 0 24px; }
.public-nav a::after { content: ""; position: absolute; left: 50%; right: 50%; bottom: 17px; height: 2px; background: var(--cobalt); transition: left .2s, right .2s; }
.public-nav a:hover::after { left: 0; right: 0; }
.header-actions { display: flex; align-items: center; gap: 12px; }
.text-button { border: 0; background: transparent; padding: 10px 8px; font-weight: 700; cursor: pointer; }
.primary-button, .secondary-button { min-height: 48px; display: inline-flex; align-items: center; justify-content: center; border: 0; border-radius: 999px; padding: 0 24px; font-weight: 800; cursor: pointer; transition: transform .18s, box-shadow .18s, background .18s; white-space: nowrap; }
.primary-button { background: var(--cobalt); color: white; box-shadow: 0 12px 28px rgba(21,75,182,.28); }
.primary-button:hover { background: var(--cobalt-dark); box-shadow: 0 16px 34px rgba(21,75,182,.34); transform: translateY(-2px); }
.primary-button:active, .secondary-button:active { transform: scale(.98); }
.primary-button.compact { min-height: 40px; padding-inline: 18px; font-size: 13px; }
.primary-button.light { background: white; color: var(--cobalt-dark); box-shadow: none; }
.primary-button.full { width: 100%; }
.secondary-button { border: 1px solid rgba(16,40,74,.28); background: rgba(255,255,255,.72); color: var(--ink); }
.secondary-button:hover { background: white; transform: translateY(-2px); }
.secondary-button.dark { background: transparent; border-color: rgba(16,40,74,.26); }
.menu-button { display: none; width: 42px; height: 42px; border: 0; border-radius: 50%; background: white; place-items: center; cursor: pointer; }
.menu-button span, .sidebar-toggle span { display: block; width: 18px; height: 2px; background: var(--ink); margin: 3px; }

.hero { min-height: 620px; height: min(680px, 78dvh); position: relative; overflow: hidden; background: #fafdff; isolation: isolate; }
.hero-poster { position: absolute; inset: 0; width: 100%; height: 100%; background: url("assets/oyland-hero-v3.png") center / cover no-repeat; z-index: -4; animation: worldBreath 16s ease-in-out infinite alternate; }
@keyframes worldBreath { to { transform: scale(1.025); filter: saturate(1.04) brightness(1.025); } }
.hero-wash { position: absolute; inset: 0; z-index: -3; background: linear-gradient(90deg, rgba(255,255,255,.2), transparent 50%); }
.hero::after { content: ""; position: absolute; inset: auto -5% -92px; height: 112px; background: var(--cloud); border-radius: 50% 50% 0 0 / 52% 52% 0 0; z-index: 3; }
.hero-cloud { position: absolute; border-radius: 50%; filter: blur(30px); background: rgba(255,255,255,.72); z-index: -2; pointer-events: none; }
.cloud-a { width: 420px; height: 150px; left: -80px; bottom: 80px; animation: floatCloud 11s ease-in-out infinite alternate; }
.cloud-b { width: 330px; height: 105px; right: 12%; top: 26%; animation: floatCloud 14s ease-in-out -4s infinite alternate-reverse; }
@keyframes floatCloud { to { transform: translate3d(34px,-14px,0) scale(1.04); } }
.hero-content { position: relative; z-index: 2; padding-top: clamp(175px, 23vh, 220px); }
.brand-line { margin: 0 0 24px; color: var(--cobalt-dark); font-weight: 800; letter-spacing: .02em; }
.hero h1 { max-width: 650px; margin: 0; font-size: clamp(56px, 5.6vw, 82px); line-height: 1.03; letter-spacing: .02em; text-wrap: balance; }
.hero-copy { max-width: 550px; margin: 24px 0 0; font-family: "Songti SC", "STSong", serif; font-size: clamp(20px, 2vw, 28px); line-height: 1.65; letter-spacing: .14em; color: #263850; }
.hero-actions { display: flex; align-items: center; gap: 14px; margin-top: 28px; }
.hero-button { gap: 20px; min-width: 190px; }
.hero-button span { width: 26px; height: 26px; display: grid; place-items: center; border-radius: 50%; background: white; color: var(--cobalt); }
.hero-button span::before { content: ""; width: 7px; height: 7px; border-top: 2px solid currentColor; border-right: 2px solid currentColor; transform: translateX(-1px) rotate(45deg); }
.theme-player { display: inline-flex; align-items: center; gap: 10px; min-height: 48px; padding: 7px 14px 7px 8px; border: 0; border-radius: 999px; background: rgba(255,255,255,.92); color: var(--ink); box-shadow: 0 10px 28px rgba(48,101,157,.16); cursor: pointer; text-align: left; transition: transform .18s ease, box-shadow .18s ease; }
.theme-player:hover { transform: translateY(-2px); box-shadow: 0 14px 32px rgba(48,101,157,.22); }
.theme-player-icon { position: relative; width: 34px; height: 34px; flex: 0 0 auto; border-radius: 50%; background: var(--cobalt); }
.theme-player-icon::before { content: ""; position: absolute; left: 14px; top: 11px; width: 10px; height: 12px; background: white; clip-path: polygon(0 0,100% 50%,0 100%); }
.theme-player[aria-pressed="true"] .theme-player-icon::before { left: 11px; top: 10px; width: 12px; height: 14px; border: 0; background: linear-gradient(90deg,white 0 4px,transparent 4px 8px,white 8px 12px); }
.theme-player-copy { display: grid; gap: 1px; line-height: 1.15; white-space: nowrap; }
.theme-player-copy small { color: var(--muted); font-size: 10px; font-weight: 650; }
.theme-player-copy strong { color: var(--cobalt-dark); font-size: 12px; font-weight: 800; }
.theme-player-mobile { display: none; }
.airship-brand { position: absolute; z-index: 1; color: rgba(255,255,255,.96); font-size: 8px; font-weight: 950; line-height: 1; letter-spacing: -.04em; text-shadow: 0 1px 2px rgba(11,50,108,.32); pointer-events: none; }
.airship-brand-music { left: 49.4%; top: 16%; transform: rotate(3deg); }
.airship-brand-land { right: 5.6%; top: 38.3%; font-size: 7px; transform: rotate(1deg); }
.world-coordinate { display: none; }
.world-coordinate span:last-child { grid-column: 2; }
.coordinate-dot { width: 8px; height: 8px; margin-top: 3px; background: var(--cyan); border-radius: 50%; box-shadow: 0 0 0 5px rgba(32,167,216,.2); }

.manifesto { padding: 72px 0 120px; }
.manifesto-copy { display: grid; grid-template-columns: 1.05fr .7fr; gap: 100px; align-items: end; }
.manifesto h2, .section-heading h2, .learning h2, .audience h2, .community-copy h2 { margin: 0; font-size: clamp(38px, 5vw, 68px); line-height: 1.08; letter-spacing: -.035em; }
.manifesto-copy p, .section-heading p, .community-copy p { margin: 0; color: var(--muted); line-height: 1.85; font-size: 17px; }
.truth-strip { margin: 80px 0 0; padding: 32px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); display: grid; grid-template-columns: repeat(4,1fr); }
.truth-strip div { padding: 0 28px; border-right: 1px solid var(--line); }
.truth-strip div:first-child { padding-left: 0; }
.truth-strip div:last-child { border-right: 0; }
.truth-strip dt { font-size: 46px; line-height: 1; font-weight: 900; letter-spacing: -.045em; color: var(--cobalt-dark); }
.truth-strip dd { margin: 10px 0 0; color: var(--muted); font-size: 14px; }

.course-world { padding: 70px 0 92px; background: linear-gradient(180deg, #f9fcff, #eef6ff 82%, var(--cloud)); position: relative; overflow: hidden; }
.course-world::before { content: ""; position: absolute; inset: 12% -5% auto 28%; height: 420px; opacity: .3; background: radial-gradient(ellipse at center, transparent 0 32%, rgba(89,150,220,.09) 33% 34%, transparent 35% 48%, rgba(89,150,220,.08) 49% 50%, transparent 51%); }
.course-map-layout { display: grid; grid-template-columns: 280px 1fr; gap: 52px; align-items: start; }
.course-map-intro { padding-top: 34px; position: relative; z-index: 2; }
.course-map-intro .section-heading h2 { font-size: 32px; letter-spacing: -.02em; }
.heading-mark { display: block; width: 42px; height: 4px; margin-top: 18px; border-radius: 999px; background: var(--cobalt); }
.course-map-intro .section-heading p { margin-top: 26px; font-size: 14px; line-height: 2; }
.course-map-stage { min-width: 0; }
.course-map-viewport { min-width: 0; }
.map-mobile-guide { display: none; }
.section-heading { max-width: 850px; }
.section-heading p { margin-top: 20px; }
.route-tab { border: 1px solid rgba(18,63,145,.18); background: rgba(255,255,255,.66); border-radius: 999px; padding: 9px 13px; font-size: 12px; font-weight: 750; color: var(--muted); white-space: nowrap; cursor: pointer; }
.route-tab.active { background: var(--cobalt-dark); border-color: var(--cobalt-dark); color: white; }
.atlas { position: relative; aspect-ratio: 4 / 1; min-height: 0; }
.atlas::before { content: ""; position: absolute; inset: 0; background: url("assets/course-islands-semantic-web-v1.png") center / contain no-repeat; -webkit-mask-image: linear-gradient(90deg,transparent 0,#000 3%,#000 97%,transparent 100%); mask-image: linear-gradient(90deg,transparent 0,#000 3%,#000 97%,transparent 100%); pointer-events: none; }
.atlas-route { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; pointer-events: none; }
.atlas-route path { fill: none; stroke: rgba(39,112,226,.62); stroke-width: 1.7; stroke-linecap: round; stroke-dasharray: 5 6; }
.atlas-route circle { fill: #4b96eb; stroke: rgba(255,255,255,.9); stroke-width: 3; }
.atlas-node { position: absolute; left: var(--x); top: var(--y); z-index: 2; width: 112px; min-height: 148px; padding: 0; border: 0; background: transparent; color: var(--ink); text-align: center; text-decoration: none; cursor: pointer; transform: translate(-50%,-50%); transition: transform .25s, filter .25s; }
.atlas-node:hover, .atlas-node.active { filter: saturate(1.12) drop-shadow(0 10px 12px rgba(52,111,169,.18)); transform: translate(-50%,-50%) scale(1.045); }
.atlas-node:focus-visible { outline: 3px solid #0a76d5; outline-offset: 4px; border-radius: 16px; }
.atlas-island { display: block; width: 100%; height: 108px; margin-bottom: 2px; }
.atlas-label { display: inline-flex; align-items: center; gap: 5px; min-height: 28px; padding: 5px 9px; border: 1px solid rgba(61,126,204,.1); border-radius: 8px; background: rgba(248,252,255,.9); box-shadow: 0 5px 16px rgba(66,116,166,.08); white-space: nowrap; }
.atlas-node small { display: inline; color: #2d79da; font-size: 11px; font-weight: 800; }
.atlas-node strong { display: inline; color: #236bc8; font-size: 12px; line-height: 1.35; font-weight: 700; }
.lab-satellite { position: absolute; z-index: 5; left: 5%; top: 2%; display: grid; grid-template-columns: 76px auto; gap: 7px; align-items: center; color: var(--cobalt-dark); text-decoration: none; transition: transform .25s ease,filter .25s ease; }
.lab-satellite:hover { transform: translateY(-3px); filter: drop-shadow(0 10px 15px rgba(52,111,169,.18)); }
.lab-satellite img { width: 76px; height: 62px; object-fit: contain; mix-blend-mode: multiply; }
.lab-satellite span { display: grid; gap: 3px; padding: 6px 9px; border-radius: 8px; background: rgba(248,252,255,.88); }
.lab-satellite strong { font-size: 12px; }.lab-satellite small { color: var(--muted); font-size: 9px; white-space: nowrap; }

.proof { padding: 104px 0; background: #e7f3fd; }
.interactive-lab { padding: 118px 0; overflow: hidden; color: white; background: #0d2e5a; }
.lab-layout { display: grid; grid-template-columns: minmax(260px,.72fr) minmax(520px,1.28fr); gap: clamp(60px,8vw,118px); align-items: center; }
.lab-copy h2 { margin: 0; font-size: clamp(46px,5.4vw,76px); line-height: 1.05; letter-spacing: -.03em; }
.lab-copy > p { max-width: 30em; margin: 28px 0 0; color: #c9ddf3; font-size: 17px; line-height: 1.9; }
.lab-future { display: flex; flex-wrap: wrap; gap: 8px 16px; margin-top: 34px; color: #8eb5df; font-size: 12px; }
.sound-observatory { min-width: 0; }
.lab-visual { position: relative; height: 330px; display: grid; place-items: center; overflow: hidden; }
.lab-orbit { position: absolute; border: 1px solid rgba(141,197,246,.32); border-radius: 50%; transition: transform .55s cubic-bezier(.16,1,.3,1); }
.orbit-one { width: 270px; height: 270px; }.orbit-two { width: 430px; height: 170px; transform: rotate(-13deg); }
.lab-pulse { width: 120px; height: 120px; border-radius: 50%; background: radial-gradient(circle at 42% 38%,#fff 0 4%,#74c8ff 12%,#2678d6 42%,rgba(29,95,175,.1) 70%); box-shadow: 0 18px 62px rgba(41,155,245,.3); transition: transform .45s cubic-bezier(.16,1,.3,1),filter .45s ease; }
.lab-bars { position: absolute; inset: auto 7% 36px; height: 80px; display: flex; align-items: center; justify-content: center; gap: 8px; }
.lab-bars i { width: 4px; height: calc(18px + (var(--bar, 1) * 8px)); border-radius: 4px; background: #82c9ff; opacity: .7; }
.lab-bars i:nth-child(3n+1) { height: 34px; }.lab-bars i:nth-child(4n+2) { height: 56px; }
.sound-observatory.playing .lab-pulse { transform: scale(1.12); filter: brightness(1.15); }
.sound-observatory.playing .orbit-one { transform: scale(1.12); }.sound-observatory.playing .orbit-two { transform: rotate(-13deg) scale(1.08); }
.sound-observatory.playing .lab-bars i { animation: labMeter .8s ease-in-out infinite alternate; }.sound-observatory.playing .lab-bars i:nth-child(2n) { animation-delay: -.35s; }
@keyframes labMeter { to { transform: scaleY(1.65); opacity: 1; } }
.lab-controls { padding: 26px 28px 24px; border-radius: 16px; background: #f7fbff; color: var(--ink); box-shadow: 0 26px 70px rgba(1,18,39,.3); }
.lab-heading { display: flex; align-items: center; justify-content: space-between; gap: 22px; }
.lab-heading > div { display: grid; gap: 7px; }.lab-heading strong { font-size: 21px; }.lab-heading span { color: var(--muted); font-size: 13px; line-height: 1.55; }
.lab-play { position: relative; width: 52px; height: 52px; flex: 0 0 auto; border: 0; border-radius: 50%; background: var(--cobalt); cursor: pointer; }
.lab-play::before { content: ""; position: absolute; left: 21px; top: 17px; width: 12px; height: 18px; background: white; clip-path: polygon(0 0,100% 50%,0 100%); }
.lab-play.playing::before { left: 18px; width: 16px; clip-path: none; background: linear-gradient(90deg,#fff 0 5px,transparent 5px 11px,#fff 11px 16px); }
.lab-presets { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 25px; }
.lab-presets button { min-height: 38px; padding: 0 15px; border: 1px solid #c9dced; border-radius: 999px; background: #fff; color: #557391; font-size: 12px; font-weight: 750; cursor: pointer; }
.lab-presets button.active { border-color: var(--cobalt); background: var(--cobalt); color: white; }
.lab-mix { display: grid; grid-template-columns: auto 1fr auto; gap: 13px; align-items: center; margin-top: 24px; color: var(--muted); font-size: 11px; }
.lab-mix input { width: 100%; accent-color: var(--cobalt); cursor: pointer; }
.proof-inner { display: grid; grid-template-columns: minmax(340px,460px) minmax(0,1fr); gap: clamp(58px,7vw,104px); align-items: center; }
.proof-image { width: 100%; aspect-ratio: 4 / 5; overflow: hidden; border-radius: 16px 64px 16px 16px; box-shadow: 0 24px 60px rgba(52,98,145,.18); }
.proof-image img { width: 100%; height: 100%; object-fit: cover; object-position: 43% 78%; filter: saturate(.86) contrast(.96); }
.proof-copy { display: flex; flex-direction: column; justify-content: center; max-width: 620px; }
.teacher-name { margin: 0 0 30px; font-size: clamp(40px,4vw,62px); line-height: 1.02; font-weight: 900; letter-spacing: -.035em; }
.teacher-name span { display: block; margin-top: 8px; color: var(--cobalt); font-size: 12px; letter-spacing: .02em; }
.teacher-summary { max-width: 28em; margin: 0; color: var(--ink); font-size: clamp(20px,1.7vw,26px); font-weight: 750; line-height: 1.55; }
.teacher-evidence { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); margin: 34px 0 0; padding: 26px 0; border-top: 1px solid #b9d6ef; border-bottom: 1px solid #b9d6ef; }
.teacher-evidence div { min-width: 0; padding-right: 18px; }.teacher-evidence div:nth-child(n+4) { margin-top: 25px; }
.teacher-evidence dt { color: var(--ink); font-size: clamp(22px,2vw,31px); font-weight: 900; line-height: 1.1; white-space: nowrap; }
.teacher-evidence dd { margin: 9px 0 0; color: #315a83; font-size: clamp(14px,1.15vw,17px); font-weight: 750; line-height: 1.4; }
.works-list { display: grid; grid-template-columns: 1fr 1fr; gap: 10px 28px; margin: 26px 0 30px; color: #2f5279; font-size: 14px; }
.proof-copy .secondary-button { align-self: flex-start; }

.learning { padding: 140px 0; }
.learning-title { max-width: none; }
.learning-title h2 { font-size: clamp(40px,4.2vw,58px); white-space: nowrap; }
.text-route { display: inline-block; margin-top: 18px; color: var(--cobalt); font-weight: 800; }
.learning-flow { margin-top: 80px; display: grid; grid-template-columns: repeat(4,1fr); border-top: 1px solid var(--line); }
.learning-flow article { padding: 30px 28px 0 0; min-height: 230px; border-right: 1px solid var(--line); }
.learning-flow article + article { padding-left: 28px; }
.learning-flow article:last-child { border-right: 0; }
.flow-mark { display: block; margin-bottom: 50px; color: var(--cobalt); font-size: 11px; font-weight: 900; letter-spacing: .13em; }
.learning-flow h3 { font-size: 23px; margin: 0 0 14px; }
.learning-flow p { margin: 0; color: var(--muted); line-height: 1.75; font-size: 14px; }

.community-preview { min-height: 760px; display: grid; align-items: center; background: linear-gradient(145deg,#d5ecff,#f4fbff 68%); overflow: hidden; }
.community-stage { display: grid; grid-template-columns: .8fr 1.2fr; gap: 80px; align-items: center; }
.community-copy p { max-width: 560px; margin-top: 26px; }
.community-copy .primary-button { margin-top: 35px; }
.human-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 35px; }.human-actions .primary-button { margin-top: 0; }
.member-orbits { position: relative; min-height: 520px; }
.member-card { position: absolute; display: flex; align-items: center; gap: 14px; background: rgba(255,255,255,.88); border-radius: var(--radius); padding: 14px 16px; box-shadow: var(--shadow); z-index: 2; }
.member-card.featured { width: 330px; left: 28%; top: 35%; padding: 20px; }
.member-card.small { width: 210px; }
.card-b { left: 2%; top: 8%; }
.card-c { right: 0; top: 7%; }
.card-d { right: 4%; bottom: 5%; }
.avatar { width: 48px; height: 48px; flex: 0 0 auto; border-radius: 50%; display: grid; place-items: center; color: white; font-weight: 900; background: linear-gradient(145deg,#2c79d5,#15418c); }
.avatar-2 { background: linear-gradient(145deg,#1d958c,#123f91); }
.avatar-3 { background: linear-gradient(145deg,#bf6e80,#5a60a6); }
.avatar-4 { background: linear-gradient(145deg,#4d8b63,#2478aa); }
.member-card h3 { margin: 0 0 4px; font-size: 15px; }
.member-card p { margin: 0; color: var(--muted); font-size: 12px; }
.status-dot { width: 9px; height: 9px; margin-left: auto; background: var(--teal); border-radius: 50%; box-shadow: 0 0 0 4px rgba(29,143,134,.14); }
.orbit-line { position: absolute; border: 1px dashed rgba(21,75,182,.35); border-radius: 50%; transform: rotate(-17deg); }
.line-a { width: 580px; height: 280px; left: 0; top: 100px; }
.line-b { width: 420px; height: 420px; right: 10px; top: 40px; transform: rotate(28deg); }

.student-works { position: relative; overflow: hidden; padding: 128px 0 118px; background: linear-gradient(180deg,#f9fcff 0%,#eef7ff 68%,#f7fbff 100%); }
.student-works::before { content: ""; position: absolute; inset: 8% -8% auto 18%; height: 460px; pointer-events: none; background: radial-gradient(ellipse at center,transparent 0 35%,rgba(62,128,210,.08) 35.3% 35.8%,transparent 36.1% 51%,rgba(62,128,210,.06) 51.3% 51.7%,transparent 52%); }
.student-works-shell { position: relative; z-index: 1; }
.student-works-header { display: grid; grid-template-columns: 1fr minmax(320px,500px); align-items: end; gap: 64px; }
.student-works-header h2 { margin: 0; font-size: clamp(44px,5vw,68px); line-height: 1.05; letter-spacing: -.03em; }
.student-works-header p { margin: 24px 0 0; color: var(--muted); font-size: 17px; letter-spacing: .05em; }
.works-search { height: 50px; display: flex; align-items: center; gap: 12px; padding: 0 20px; border-radius: 999px; background: white; box-shadow: 0 10px 30px rgba(63,112,162,.1); }
.works-search i { width: 16px; height: 16px; flex: 0 0 auto; border: 2px solid var(--muted); border-radius: 50%; position: relative; }
.works-search i::after { content: ""; position: absolute; right: -5px; bottom: -3px; width: 6px; height: 2px; border-radius: 2px; background: var(--muted); transform: rotate(45deg); }
.works-search input { width: 100%; border: 0; outline: 0; background: transparent; color: var(--ink); }
.works-search input::placeholder { color: #6b83a0; }
.works-filter { display: flex; justify-content: flex-end; gap: 10px; margin: 30px 0 42px; }
.works-filter button { min-height: 42px; padding: 0 20px; border: 0; border-radius: 999px; background: white; color: var(--muted); font-weight: 750; cursor: pointer; box-shadow: 0 7px 20px rgba(63,112,162,.08); }
.works-filter button.active { background: var(--cobalt); color: white; box-shadow: 0 10px 28px rgba(21,75,182,.24); }
.assignment-genres { display: flex; gap: 8px; margin: -22px 0 32px; padding: 4px 0 8px; overflow-x: auto; scrollbar-width: none; }
.assignment-genres[hidden] { display: none; }
.assignment-genres::-webkit-scrollbar { display: none; }
.assignment-genres button { min-height: 34px; flex: 0 0 auto; padding: 0 15px; border: 1px solid #cbddee; border-radius: 999px; background: rgba(255,255,255,.72); color: #526f90; font-size: 12px; font-weight: 750; cursor: pointer; }
.assignment-genres button.active { border-color: var(--cobalt); background: var(--cobalt); color: white; }
.works-orbit { position: relative; margin-inline: calc((100vw - min(1240px,calc(100vw - 48px))) / -2); }
.student-work-rail { display: flex; align-items: flex-end; gap: clamp(22px,3vw,48px); padding: 32px calc(50vw - 110px) 42px; overflow-x: auto; overscroll-behavior-inline: contain; scroll-snap-type: x mandatory; scroll-behavior: smooth; scrollbar-width: none; }
.student-work-rail::-webkit-scrollbar { display: none; }
.student-work-card { --work-scale: .82; --work-depth: 24px; --work-opacity: .58; width: clamp(180px,17vw,232px); flex: 0 0 auto; padding: 0; border: 0; background: transparent; color: var(--ink); text-align: left; cursor: pointer; opacity: var(--work-opacity); transform: translateY(var(--work-depth)) scale(var(--work-scale)); transform-origin: center bottom; scroll-snap-align: center; transition: transform .38s cubic-bezier(.2,.8,.2,1),opacity .3s ease,filter .3s ease; }
.student-work-card:hover { filter: saturate(1.08); }
.student-work-card.active { --work-scale: 1.18; --work-depth: 0px; --work-opacity: 1; }
.student-work-cover { position: relative; aspect-ratio: 1; overflow: hidden; border-radius: 14px; background: #dce9f5; box-shadow: 0 18px 36px rgba(38,85,133,.18); }
.student-work-card.active .student-work-cover { box-shadow: 0 24px 52px rgba(38,85,133,.25); outline: 2px solid #5d9cf2; outline-offset: 4px; }
.student-work-cover img { width: 100%; height: 100%; object-fit: cover; }
.assignment-art { display: block; width: 100%; height: 100%; background: radial-gradient(circle at 66% 32%,rgba(255,255,255,.9) 0 3%,transparent 3.4%), radial-gradient(circle at 42% 58%,rgba(255,255,255,.32),transparent 31%), linear-gradient(145deg,#96c8ef,#2469bf 58%,#173f87); }
.assignment-art-2 { background: radial-gradient(circle at 70% 26%,rgba(255,245,207,.8),transparent 21%), linear-gradient(145deg,#e5ceb0,#c48e62 43%,#546a8e); }
.assignment-art-3 { background: radial-gradient(circle at 32% 35%,rgba(255,255,255,.68),transparent 24%), linear-gradient(150deg,#efc6cf,#8a9bd4 52%,#365b9c); }
.assignment-art-4 { background: radial-gradient(ellipse at 50% 78%,rgba(255,255,255,.48),transparent 28%), linear-gradient(160deg,#bce3ed,#4d8eb8 55%,#173b69); }
.assignment-art-5 { background: radial-gradient(circle at 35% 38%,rgba(255,221,159,.78),transparent 20%), linear-gradient(145deg,#ee9978,#6a5b9d 54%,#173d72); }
.assignment-art-6 { background: radial-gradient(circle at 65% 32%,rgba(255,255,255,.72),transparent 22%), linear-gradient(145deg,#b4d4c0,#648b88 50%,#294c6e); }
.student-work-card h3 { margin: 15px 0 0; font-size: 16px; line-height: 1.45; text-align: center; }
.student-work-card.active h3 { color: var(--cobalt); }
.student-work-meta { display: block; margin-top: 5px; color: var(--muted); font-size: 11px; line-height: 1.4; text-align: center; }
.work-genre-row { display: flex; flex-wrap: wrap; justify-content: center; gap: 5px; margin-top: 8px; }
.work-genre-tag { padding: 4px 7px; border: 1px solid #c6daf0; border-radius: 999px; background: rgba(255,255,255,.78); color: #2d67ad; font-size: 10px; font-weight: 750; }
.work-mv-badge { position: absolute; right: 9px; top: 9px; min-width: 38px; padding: 5px 8px; border-radius: 999px; color: white; background: rgba(18,63,145,.9); font-size: 10px; font-weight: 850; text-align: center; }
.works-arrow { position: absolute; z-index: 4; top: 42%; width: 50px; height: 50px; display: grid; place-items: center; border: 0; border-radius: 50%; background: white; color: var(--cobalt); box-shadow: 0 12px 34px rgba(55,104,154,.18); cursor: pointer; transform: translateY(-50%); }
.works-arrow-prev { left: max(12px,calc((100vw - 1400px) / 2)); }
.works-arrow-next { right: max(12px,calc((100vw - 1400px) / 2)); }
.works-arrow i { width: 10px; height: 10px; border-top: 2px solid currentColor; border-right: 2px solid currentColor; transform: rotate(45deg); }
.works-arrow-prev i { transform: rotate(-135deg); }
.student-work-detail { max-width: 1060px; margin: 26px auto 0; }
.work-detail-shell { display: grid; grid-template-columns: 210px minmax(0,1fr); gap: 30px; align-items: start; padding: 24px; border-radius: 16px; background: white; box-shadow: 0 24px 64px rgba(63,112,162,.17); }
.work-detail-cover { overflow: hidden; border-radius: 12px; aspect-ratio: 1; background: #dce9f5; }
.work-detail-cover img { width: 100%; height: 100%; object-fit: cover; }
.work-detail-content { min-width: 0; display: flex; flex-direction: column; }
.work-detail-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 20px; }
.work-detail-heading h3 { min-width: 0; margin: 0; font-size: clamp(24px,2.5vw,34px); line-height: 1.2; letter-spacing: -.02em; overflow-wrap: anywhere; }
.work-kind { flex: 0 0 auto; padding: 7px 10px; border-radius: 999px; background: #e8f2ff; color: var(--cobalt); font-size: 11px; font-weight: 800; }
.work-media-tabs { display: flex; gap: 18px; margin-top: 15px; }
.work-media-tabs button { padding: 4px 0 7px; border: 0; border-bottom: 2px solid transparent; background: transparent; color: var(--muted); font-weight: 800; cursor: pointer; }
.work-media-tabs button.active { color: var(--cobalt); border-bottom-color: var(--cobalt); }
.work-media-surface { flex: 1; min-height: 112px; display: grid; align-items: center; margin-top: 14px; }
.work-audio-player { display: grid; grid-template-columns: 48px minmax(0,1fr); align-items: center; gap: 18px; }
.work-audio-player audio { display: none; }
.work-audio-toggle { width: 48px; height: 48px; border: 0; border-radius: 50%; background: var(--cobalt); color: white; cursor: pointer; position: relative; }
.work-audio-toggle::before { content: ""; position: absolute; left: 20px; top: 16px; width: 11px; height: 15px; background: white; clip-path: polygon(0 0,100% 50%,0 100%); }
.work-audio-toggle.playing::before { left: 17px; top: 16px; width: 14px; height: 16px; clip-path: none; background: linear-gradient(90deg,white 0 5px,transparent 5px 9px,white 9px 14px); }
.work-timeline { min-width: 0; }
.work-wave-wrap { position: relative; height: 52px; }
.work-wave-wrap.waveform-unavailable::before { content: "波形暂时无法解析"; position: absolute; inset: 0; display: grid; place-items: center; color: var(--muted); font-size: 12px; }
.work-wave-canvas { display: block; width: 100%; height: 52px; }
.work-progress { appearance: none; position: absolute; inset: 0; width: 100%; height: 100%; margin: 0; cursor: pointer; background: transparent; }
.work-progress::-webkit-slider-runnable-track { height: 100%; background: transparent; }
.work-progress::-webkit-slider-thumb { appearance: none; width: 13px; height: 13px; margin-top: 19.5px; border: 3px solid white; border-radius: 50%; background: var(--cobalt); box-shadow: 0 1px 6px rgba(17,76,150,.35); }
.work-progress::-moz-range-track { height: 100%; background: transparent; }
.work-progress::-moz-range-thumb { width: 9px; height: 9px; border: 3px solid white; border-radius: 50%; background: var(--cobalt); box-shadow: 0 1px 6px rgba(17,76,150,.35); }
.work-progress:focus-visible { outline: 2px solid var(--cobalt); outline-offset: 3px; border-radius: 6px; }
.work-time { display: flex; justify-content: space-between; margin-top: 1px; color: var(--muted); font-size: 12px; font-variant-numeric: tabular-nums; }
.work-credits { margin-top: 22px; padding-top: 18px; border-top: 1px solid var(--line); }
.work-credits h4 { margin: 0 0 13px; color: var(--ink); font-size: 15px; }
.work-credit-highlights, .work-credit-details dl { margin: 0; }
.work-credit-highlights { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 10px 24px; }
.work-credit-highlights div, .work-credit-details dl div { display: grid; grid-template-columns: 54px minmax(0,1fr); gap: 10px; align-items: start; }
.work-credits dt { color: var(--muted); font-size: 12px; line-height: 1.65; }
.work-credits dd { min-width: 0; margin: 0; color: var(--ink); font-size: 12px; line-height: 1.65; overflow-wrap: anywhere; }
.work-credit-details { margin-top: 14px; }
.work-credit-details summary { width: fit-content; list-style: none; color: var(--cobalt); font-size: 12px; font-weight: 800; cursor: pointer; }
.work-credit-details summary::-webkit-details-marker { display: none; }
.work-credit-details summary::after { content: "＋"; margin-left: 7px; }
.work-credit-details[open] summary::after { content: "−"; }
.work-credit-details dl { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 9px 24px; margin-top: 14px; padding: 14px 16px; border-radius: 12px; background: #f2f7fc; }
.work-media-empty { min-height: 92px; display: grid; place-items: center; align-content: center; gap: 5px; color: var(--muted); text-align: center; background: #f1f7fc; border-radius: 12px; }
.work-media-empty strong { color: var(--ink); }
.assignment-detail { grid-template-columns: 160px minmax(0,1fr); max-width: 880px; margin-inline: auto; }
.assignment-detail .work-detail-cover { width: 160px; }
.assignment-detail .work-detail-heading { align-items: center; }
.assignment-summary { margin: 9px 0 0; color: var(--muted); font-size: 13px; }
.assignment-detail .work-genre-row { justify-content: flex-start; margin-top: 12px; }
.assignment-review { margin-top: 20px; padding-top: 16px; border-top: 1px solid var(--line); color: #526f90; font-size: 13px; line-height: 1.7; }
.assignment-review strong { display: inline-block; margin-right: 9px; padding: 4px 8px; border-radius: 999px; background: #e7f1ff; color: var(--cobalt); font-size: 11px; }
.assignment-demo-note { color: #6d83a0; font-size: 11px; }
.work-mv-panel { width: 100%; }
.work-mv-tabs { display: flex; gap: 8px; margin-bottom: 10px; }
.work-mv-tabs button { min-height: 36px; padding: 0 16px; border: 1px solid #c8dcef; border-radius: 999px; background: white; color: var(--muted); font-weight: 800; cursor: pointer; }
.work-mv-tabs button.active { border-color: var(--cobalt); background: var(--cobalt); color: white; }
.work-mv-placeholder { width: 100%; aspect-ratio: 16 / 9; min-height: 180px; display: grid; place-items: center; align-content: center; gap: 7px; border-radius: 12px; color: white; background: linear-gradient(145deg,#123f91,#1e69c7); text-align: center; }
.work-mv-placeholder strong { font-size: 20px; }
.work-mv-play { width: 52px; height: 52px; margin-bottom: 5px; border: 2px solid rgba(255,255,255,.75); border-radius: 50%; position: relative; }
.work-mv-play::after { content: ""; position: absolute; left: 20px; top: 14px; width: 14px; height: 20px; background: white; clip-path: polygon(0 0,100% 50%,0 100%); }
.works-empty { width: 100%; min-height: 280px; display: grid; place-items: center; color: var(--muted); text-align: center; }
.world-news { padding: 108px 0; background: #e7f3fd; }
.world-news-layout { display: grid; grid-template-columns: .82fr 1fr 1fr; gap: 22px; align-items: stretch; }
.world-news-layout > div { align-self: center; padding-right: 34px; }.world-news h2 { margin: 0; font-size: clamp(38px,4.4vw,60px); line-height: 1.08; letter-spacing: -.03em; }.world-news p { margin: 22px 0 0; color: var(--muted); line-height: 1.8; }
.world-news-story { position: relative; height: 330px; min-height: 0; overflow: hidden; border-radius: 16px; background: #cbddeb; box-shadow: 0 20px 50px rgba(52,98,145,.16); }
.world-news-story::after { content: ""; position: absolute; inset: 40% 0 0; background: linear-gradient(transparent,rgba(9,32,62,.86)); }
.world-news-story img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s cubic-bezier(.16,1,.3,1); }.world-news-story:hover img { transform: scale(1.04); }
.world-news-story span { position: absolute; z-index: 1; left: 24px; right: 24px; bottom: 22px; display: grid; gap: 5px; color: white; }.world-news-story strong { font-size: 23px; }.world-news-story small { color: #d8e7f5; }

.audience { padding: 92px 0 105px; }
.audience h2 { max-width: 820px; }
.audience-grid { display: grid; grid-template-columns: repeat(3,1fr); margin-top: 70px; border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.audience-grid a { min-height: 126px; display: grid; align-content: center; gap: 8px; padding: 24px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }.audience-grid strong { font-size: 18px; }.audience-grid small { color: var(--muted); line-height: 1.5; }
.faq { padding: 105px 0; border-top: 1px solid var(--line); }
.faq-list { max-width: 900px; margin-top: 70px; }
.faq details { border-top: 1px solid var(--line); }
.faq details:last-child { border-bottom: 1px solid var(--line); }
.faq summary { cursor: pointer; padding: 25px 50px 25px 0; font-size: 20px; font-weight: 800; position: relative; list-style: none; }
.faq summary::after { content: "+"; position: absolute; right: 5px; font-size: 28px; font-weight: 400; color: var(--cobalt); }
.faq details[open] summary::after { content: "−"; }
.faq details p { max-width: 720px; margin: 0; padding: 0 0 28px; color: var(--muted); line-height: 1.8; }
.final-cta { padding: 95px 0; color: white; background: var(--cobalt-dark); }
.final-cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 40px; }
.final-cta h2 { margin: 0; font-size: clamp(38px,5vw,66px); letter-spacing: -.035em; }
.final-cta p { margin: 12px 0 0; color: #c4dcf6; }
.final-actions { display: flex; flex-wrap: wrap; gap: 12px; }.final-actions .secondary-button { border-color: rgba(255,255,255,.48); color: white; background: transparent; }
.site-footer { padding: 60px 0; color: #c7d9ea; background: #0c203a; }
.site-footer .page-shell { display: grid; grid-template-columns: .7fr 1fr 1fr; gap: 50px; align-items: start; }
.site-footer strong { color: white; font-size: 22px; }
.site-footer p { margin: 7px 0 0; line-height: 1.7; }
.site-footer .page-shell > div:nth-child(2) { display: flex; flex-wrap: wrap; gap: 18px; }
.site-footer .footer-legal { grid-column: 1 / -1; display: block; text-align: center; }
.icp-link { display: inline-block; color: #c7d9ea; text-decoration: underline; text-underline-offset: 3px; }

/* Community application */
.community-app { min-height: 100dvh; display: grid; grid-template-columns: 250px 1fr; background: #eef5fb; }
.site-header.community-mode, .site-footer.community-mode { display: none; }
.app-sidebar { position: sticky; top: 0; height: 100dvh; display: flex; flex-direction: column; background: #0e294b; color: #d8e7f5; padding: 28px 18px 18px; z-index: 20; }
.app-brand { color: white; margin: 0 10px 35px; }
.app-brand .brand-orbit { border-color: #bde7ff; }
.app-sidebar nav { display: grid; gap: 5px; }
.app-nav { width: 100%; border: 0; border-radius: 12px; background: transparent; color: #aac0d7; text-align: left; padding: 13px 14px; font-size: 14px; font-weight: 750; cursor: pointer; }
.app-nav:hover, .app-nav.active { background: rgba(255,255,255,.1); color: white; }
.nav-count { float: right; min-width: 20px; height: 20px; display: inline-grid; place-items: center; border-radius: 999px; background: #2b86d9; color: white; font-size: 11px; }
.sidebar-user { margin-top: auto; display: grid; grid-template-columns: 38px 1fr auto; gap: 10px; align-items: center; padding: 15px 10px 3px; border-top: 1px solid rgba(255,255,255,.12); }
.sidebar-user .avatar { width: 38px; height: 38px; font-size: 12px; }
.sidebar-user strong, .sidebar-user span { display: block; font-size: 12px; }
.sidebar-user span { margin-top: 3px; color: #8eaac6; }
.sidebar-user button { border: 0; background: transparent; color: #b7cadc; font-size: 12px; cursor: pointer; }
.app-main { min-width: 0; }
.app-topbar { height: 70px; display: grid; grid-template-columns: 1fr auto; gap: 20px; align-items: center; padding: 0 34px; background: rgba(255,255,255,.92); border-bottom: 1px solid #d7e5f1; position: sticky; top: 0; z-index: 15; backdrop-filter: blur(15px); }
.global-search { width: min(520px,100%); position: relative; }
.global-search span { position: absolute; left: 16px; top: 50%; transform: translateY(-50%); color: #6d849d; font-size: 13px; pointer-events: none; }
.global-search:focus-within span, .global-search input:not(:placeholder-shown) + span { opacity: 0; }
.global-search input { width: 100%; height: 42px; border: 1px solid #ccdeed; border-radius: 12px; background: #f5f9fc; padding: 0 16px; }
.notification-button { border: 0; border-radius: 999px; background: #edf5fb; padding: 10px 14px; font-weight: 750; cursor: pointer; }
.notification-button span { color: white; background: var(--cobalt); border-radius: 999px; padding: 2px 6px; margin-left: 4px; font-size: 11px; }
.sidebar-toggle { display: none; border: 0; background: transparent; cursor: pointer; }
.app-content { padding: 36px; }
.app-panel { display: none; animation: panelIn .35s cubic-bezier(.16,1,.3,1); }
.app-panel.active { display: block; }
@keyframes panelIn { from { opacity: 0; transform: translateY(12px); } }
.welcome-banner { min-height: 300px; display: grid; grid-template-columns: 1fr 300px; align-items: center; padding: 48px 54px; border-radius: var(--radius); color: white; overflow: hidden; background: linear-gradient(110deg,#10418d,#1b71be 64%,#63bde0); box-shadow: var(--shadow); position: relative; }
.welcome-banner::before { content: ""; position: absolute; inset: 0; background: url("assets/oyland-sky.jpg") right center / cover no-repeat; opacity: .24; mix-blend-mode: screen; }
.welcome-banner > * { position: relative; z-index: 1; }
.welcome-banner p { margin: 0 0 16px; color: #bfe7ff; font-weight: 700; }
.welcome-banner h1 { max-width: 670px; margin: 0; font-size: clamp(32px,4vw,52px); line-height: 1.1; letter-spacing: -.035em; }
.light-link { margin-top: 28px; border: 0; border-bottom: 1px solid rgba(255,255,255,.6); background: transparent; color: white; padding: 0 0 5px; font-weight: 800; cursor: pointer; }
.lesson-orbit { width: 230px; height: 230px; border: 1px solid rgba(255,255,255,.38); border-radius: 50%; position: relative; }
.lesson-orbit::before, .lesson-orbit::after { content: ""; position: absolute; border: 1px solid rgba(255,255,255,.25); border-radius: 50%; inset: 24px; }
.lesson-orbit::after { inset: 58px; }
.lesson-orbit span { position: absolute; width: 20px; height: 20px; border-radius: 50%; background: white; box-shadow: 0 0 22px #a6e2ff; }
.lesson-orbit span:nth-child(1) { top: 19px; left: 51px; }.lesson-orbit span:nth-child(2) { right: 8px; top: 102px; }.lesson-orbit span:nth-child(3) { bottom: 24px; left: 45px; }
.dashboard-grid { margin-top: 24px; display: grid; grid-template-columns: 1.2fr .8fr; gap: 24px; }
.dashboard-section { background: white; border-radius: var(--radius); padding: 26px; box-shadow: 0 10px 32px rgba(71,113,153,.08); }
.dashboard-section.bulletin { grid-column: 1 / -1; }
.dashboard-heading { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-bottom: 22px; }
.dashboard-heading h2, .dashboard-section > h2 { margin: 0; font-size: 21px; }
.dashboard-heading button { border: 0; background: transparent; color: var(--cobalt); font-weight: 750; cursor: pointer; }
.event-row, .suggested-row, .bulletin article, .connection-item, .queue-row { display: grid; align-items: center; gap: 15px; padding: 14px 0; border-top: 1px solid #e1ebf3; }
.event-row { grid-template-columns: 58px 1fr auto; }
.event-date { width: 48px; height: 52px; border-radius: 12px; display: grid; place-items: center; background: #eaf5fd; color: var(--cobalt-dark); line-height: 1; font-weight: 900; }
.event-date span { display: block; font-size: 11px; }
.event-row h3, .suggested-row h3 { margin: 0 0 5px; font-size: 15px; }
.event-row p, .suggested-row p { margin: 0; color: var(--muted); font-size: 12px; }
.event-row button, .suggested-row button { border: 1px solid #bcd2e4; background: white; border-radius: 999px; padding: 7px 11px; font-size: 12px; cursor: pointer; }
.suggested-row { grid-template-columns: 42px 1fr auto; }
.suggested-row .avatar { width: 42px; height: 42px; font-size: 11px; }
.bulletin article { grid-template-columns: 60px 1fr; }
.bulletin time { color: var(--cobalt); font-weight: 850; }
.bulletin strong { font-size: 14px; }.bulletin p { margin: 6px 0 0; color: var(--muted); font-size: 13px; }
.panel-title { display: flex; justify-content: space-between; align-items: flex-start; gap: 30px; margin-bottom: 30px; }
.panel-title h1 { margin: 0; font-size: 38px; letter-spacing: -.03em; }
.panel-title p { margin: 10px 0 0; color: var(--muted); line-height: 1.65; }
.filter-bar label, .quick-publish label, .modal-card label { display: grid; gap: 7px; color: #49647f; font-size: 12px; font-weight: 750; }
input, select, textarea { border: 1px solid #bed2e3; border-radius: 12px; background: white; color: var(--ink); padding: 11px 13px; }
input::placeholder, textarea::placeholder { color: #6f8498; }
input:focus, select:focus, textarea:focus { border-color: var(--cobalt); outline: 3px solid rgba(21,75,182,.13); }
.alumni-panel-title { margin-bottom: 22px; }
.alumni-panel-title p { max-width: 760px; }
.alumni-discovery-tabs { display: flex; align-items: center; overflow-x: auto; margin-bottom: 18px; padding: 0 6px; border-bottom: 1px solid #ccdeeb; scrollbar-width: none; }
.alumni-discovery-tabs::-webkit-scrollbar { display: none; }
.alumni-discovery-tabs button { min-height: 52px; flex: 0 0 auto; border: 0; border-bottom: 2px solid transparent; background: transparent; padding: 0 17px; color: #607991; font-size: 13px; font-weight: 750; cursor: pointer; }
.alumni-discovery-tabs button.active { border-color: var(--cobalt); color: var(--cobalt); }
.alumni-discovery-tabs span { margin-left: 4px; color: #899bad; }
.alumni-browser { position: relative; }
.alumni-directory { min-width: 0; }
.alumni-toolbar { min-height: 68px; display: grid; grid-template-columns: auto minmax(220px,420px) auto; align-items: center; gap: 16px; margin-bottom: 16px; }
.alumni-toolbar h2 { margin: 0; font-size: 24px; }
.alumni-toolbar p { margin: 5px 0 0; color: var(--muted); font-size: 12px; }
.member-search { position: relative; }
.member-search span { position: absolute; left: 14px; top: 50%; transform: translateY(-50%); color: #69829a; font-size: 12px; font-weight: 750; pointer-events: none; }
.member-search input { width: 100%; padding-left: 50px; background: white; }
.member-filter-toggle { min-height: 42px; border: 1px solid #a8c8df; border-radius: 12px; background: white; padding: 0 13px; color: #1763aa; font-size: 12px; font-weight: 800; cursor: pointer; }
.member-filter-toggle span { display: inline-grid; min-width: 19px; height: 19px; place-items: center; margin-left: 5px; border-radius: 999px; background: var(--cobalt); color: white; font-size: 10px; }
.active-member-filters { display: flex; flex-wrap: wrap; gap: 7px; margin: -3px 0 16px; }
.active-member-filters button, .pending-member-filters button { border: 0; border-radius: 999px; background: #155fb9; color: white; padding: 7px 9px; font-size: 11px; cursor: pointer; }
.active-member-filters span { margin-left: 4px; opacity: .78; }
.alumni-grid { display: grid; grid-template-columns: repeat(5,minmax(0,1fr)); gap: 12px; }
.alumni-card { min-width: 0; min-height: 292px; display: flex; flex-direction: column; border: 0; border-radius: var(--radius); background: white; padding: 16px; text-align: left; box-shadow: 0 9px 28px rgba(68,110,150,.07); cursor: pointer; transition: transform .2s cubic-bezier(.16,1,.3,1), box-shadow .2s; }
.alumni-card:hover { transform: translateY(-3px); box-shadow: 0 18px 40px rgba(68,110,150,.14); }
.alumni-card-top { display: flex; align-items: flex-start; justify-content: space-between; gap: 8px; }
.alumni-card-top .avatar { width: 40px; height: 40px; flex: 0 0 auto; font-size: 11px; }
.match-reason { max-width: 58%; padding: 5px 7px; border-radius: 999px; background: #eaf4fc; color: #2470af; font-size: 9px; font-weight: 800; line-height: 1.25; text-align: right; }
.alumni-name { display: flex; align-items: center; flex-wrap: wrap; gap: 5px; margin-top: 13px; }
.alumni-name h2 { min-width: 0; margin: 0; overflow-wrap: anywhere; font-size: 16px; }
.alumni-name span { padding: 3px 5px; border-radius: 999px; background: #e4f5ef; color: #15776d; font-size: 9px; font-weight: 800; }
.alumni-meta { margin: 5px 0 0; color: #75899d; font-size: 10px; }
.alumni-identity { min-height: 32px; margin: 12px 0 0; color: #3d5f7e; font-size: 12px; line-height: 1.45; }
.alumni-bio { min-height: 36px; display: -webkit-box; overflow: hidden; margin: 9px 0 0; color: #5f7790; font-size: 11px; line-height: 1.6; -webkit-box-orient: vertical; -webkit-line-clamp: 2; }
.tag-row { display: flex; flex-wrap: wrap; gap: 6px; }
.tag { padding: 6px 8px; border-radius: 999px; background: #edf5fb; color: #385d83; font-size: 11px; font-weight: 750; }
.alumni-card .tag-row { gap: 4px; margin-top: 10px; }
.alumni-card .tag { max-width: 100%; overflow: hidden; padding: 5px 7px; font-size: 9px; text-overflow: ellipsis; white-space: nowrap; }
.tag.relation-tag { background: #e7f2ff; color: #155eae; }
.need-badge { display: inline-flex; align-items: flex-start; gap: 6px; margin-top: auto; padding-top: 13px; color: var(--teal); font-size: 10px; font-weight: 800; line-height: 1.45; }
.need-badge::before { content: ""; width: 7px; height: 7px; background: var(--teal); border-radius: 50%; }
.member-filter-panel { width: min(390px,100vw); position: fixed; z-index: 71; right: 0; top: 0; bottom: 0; overflow-y: auto; padding: 28px 24px; background: white; box-shadow: -24px 0 70px rgba(26,62,98,.18); transform: translateX(105%); transition: transform .28s cubic-bezier(.16,1,.3,1); }
.member-filter-panel.open { transform: translateX(0); }
.member-filter-head { display: flex; justify-content: space-between; gap: 20px; }
.member-filter-head h2 { margin: 0; font-size: 24px; }
.member-filter-head p { margin: 7px 0 0; color: var(--muted); font-size: 12px; line-height: 1.6; }
.member-filter-head>button { width: 34px; height: 34px; flex: 0 0 auto; border: 0; border-radius: 50%; background: #eaf2f8; color: #46647f; font-size: 23px; cursor: pointer; }
.filter-preview { margin-top: 22px; padding: 17px; border-radius: 14px; background: #e9f5fe; }
.filter-preview span { display: block; color: #557695; font-size: 11px; }
.filter-preview strong { display: inline-block; margin-top: 4px; color: #155fbd; font-size: 34px; }
.filter-preview em { margin-left: 5px; color: #155fbd; font-size: 11px; font-style: normal; }
.filter-preview p { margin: 4px 0 0; color: #4d779a; font-size: 10px; }
.pending-member-filters { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 12px; }
.member-filter-group { padding: 18px 0; border-bottom: 1px solid #e2ecf3; }
.member-filter-group header { display: flex; justify-content: space-between; align-items: flex-start; gap: 14px; margin-bottom: 11px; }
.member-filter-group header>div { display: flex; align-items: center; gap: 6px; }
.member-filter-group h3 { margin: 0; font-size: 13px; }
.member-filter-group header span { padding: 3px 5px; border-radius: 999px; background: #edf4f9; color: #52718c; font-size: 8px; }
.member-filter-group header p { margin: 1px 0 0; color: #8295a6; font-size: 9px; text-align: right; }
.member-filter-group>div { display: flex; flex-wrap: wrap; gap: 6px; }
.member-filter-group>div button { border: 1px solid #cadbe7; border-radius: 9px; background: white; padding: 8px 9px; color: #4e6983; font-size: 10px; cursor: pointer; }
.member-filter-group>div button.selected { border-color: #3082c7; background: #eaf6ff; color: #1766ad; font-weight: 800; }
.member-filter-group em { margin-left: 3px; color: #91a2b1; font-size: 8px; font-style: normal; }
.member-filter-actions { position: sticky; bottom: -28px; display: grid; grid-template-columns: 110px 1fr; gap: 8px; margin: 0 -24px -28px; padding: 16px 24px 22px; background: white; border-top: 1px solid #dbe7f0; }
.member-filter-actions button { min-height: 42px; border-radius: 11px; font-size: 12px; font-weight: 800; cursor: pointer; }
.member-filter-actions button:first-child { border: 1px solid #bdd2e1; background: white; color: #55718b; }
.member-filter-actions button:last-child { border: 0; background: var(--cobalt); color: white; }
.member-filter-scrim { position: fixed; z-index: 70; inset: 0; border: 0; background: rgba(10,34,61,.35); cursor: default; }
.empty-state { padding: 80px 30px; text-align: center; background: white; border-radius: var(--radius); }
.empty-orbit { width: 80px; height: 80px; margin: 0 auto 25px; border: 2px solid #b9d7eb; border-radius: 50%; position: relative; }
.empty-orbit::after { content: ""; width: 14px; height: 14px; position: absolute; right: 3px; top: 8px; border-radius: 50%; background: var(--cyan); }
.empty-state h2 { margin: 0; }.empty-state p { color: var(--muted); }
.connection-tabs { display: flex; gap: 24px; border-bottom: 1px solid #ccdeeb; margin-bottom: 20px; }
.connection-tabs button { border: 0; border-bottom: 2px solid transparent; background: transparent; padding: 12px 2px; color: var(--muted); font-weight: 800; cursor: pointer; }
.connection-tabs button.active { color: var(--cobalt); border-color: var(--cobalt); }
.connection-item { grid-template-columns: 50px 1fr auto; padding: 20px; margin-bottom: 10px; border: 0; border-radius: var(--radius); background: white; }
.connection-item .avatar { width: 50px; height: 50px; }.connection-item h2 { margin: 0 0 5px; font-size: 17px; }.connection-item p { margin: 0; color: var(--muted); font-size: 13px; }
.connection-actions { display: flex; gap: 8px; }.connection-actions button { border: 1px solid #bcd1e3; background: white; border-radius: 999px; padding: 8px 13px; font-weight: 750; cursor: pointer; }.connection-actions .accept { background: var(--cobalt); border-color: var(--cobalt); color: white; }
.work-feature { min-height: 320px; display: grid; grid-template-columns: 320px 1fr; gap: 50px; align-items: center; padding: 40px; border-radius: var(--radius); background: #10284a; color: white; }
.work-art { width: 240px; height: 240px; border-radius: 50%; display: grid; place-items: center; background: repeating-radial-gradient(circle,#07172b 0 7px,#214260 8px 10px); justify-self: center; }
.work-art span { width: 85px; height: 85px; display: grid; place-items: center; border-radius: 50%; background: white; color: var(--cobalt-dark); text-align: center; font-weight: 900; }
.work-tag { color: #82d8fa; font-size: 12px; font-weight: 800; }.work-feature h2 { margin: 12px 0; font-size: 35px; }.work-feature p { max-width: 650px; color: #c8dbea; line-height: 1.75; }
.work-feature .secondary-button { color: white; border-color: rgba(255,255,255,.45); }
.work-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 16px; margin-top: 18px; }
.work-card { min-height: 180px; display: flex; flex-direction: column; justify-content: flex-end; padding: 22px; border-radius: var(--radius); color: white; background: linear-gradient(145deg,#2c73b8,#164078); }
.work-card:nth-child(2) { background: linear-gradient(145deg,#2c8796,#15536b); }.work-card:nth-child(3) { background: linear-gradient(145deg,#6c6eb1,#334c88); }
.work-card h2 { margin: 0 0 7px; }.work-card p { margin: 0; color: #d9e7f3; font-size: 13px; }
.events-layout { display: grid; grid-template-columns: 1.2fr .8fr; gap: 20px; }
.event-calendar, .event-list { background: white; border-radius: var(--radius); padding: 24px; }
.calendar-head { display: flex; align-items: center; justify-content: space-between; }.calendar-head h2 { margin: 0; font-size: 20px; }.calendar-head button { border: 0; background: transparent; color: var(--cobalt); cursor: pointer; }
.calendar-grid { display: grid; grid-template-columns: repeat(7,1fr); gap: 5px; margin-top: 25px; }.calendar-day { min-height: 60px; border-radius: 10px; display: grid; place-items: center; font-size: 13px; }.calendar-day.muted { color: #9eafbe; }.calendar-day.event { background: #e8f4fc; color: var(--cobalt-dark); font-weight: 900; position: relative; }.calendar-day.event::after { content: ""; width: 5px; height: 5px; border-radius: 50%; background: var(--cyan); position: absolute; bottom: 8px; }
.event-list .event-row { border-top: 0; border-bottom: 1px solid #e0ebf3; }
.resource-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 16px; }
.resource-card { min-height: 230px; border: 0; border-radius: var(--radius); background: white; padding: 28px; text-align: left; cursor: pointer; box-shadow: 0 9px 28px rgba(68,110,150,.07); }
.resource-card.primary-resource { color: white; background: linear-gradient(135deg,#174995,#2686c9); }
.resource-card span { color: var(--cobalt); font-size: 11px; font-weight: 900; letter-spacing: .12em; }.primary-resource span { color: #b9e9ff; }.resource-card h2 { margin: 38px 0 10px; font-size: 26px; }.resource-card p { margin: 0; color: var(--muted); line-height: 1.65; }.primary-resource p { color: #d4eafa; }
.admin-stats { display: grid; grid-template-columns: repeat(4,1fr); gap: 12px; margin: 0 0 22px; }.admin-stats div { padding: 22px; border-radius: var(--radius); background: white; }.admin-stats dt { font-size: 28px; font-weight: 900; color: var(--cobalt-dark); }.admin-stats dd { margin: 7px 0 0; color: var(--muted); font-size: 12px; }
.admin-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 20px; }.admin-grid > section { background: white; border-radius: var(--radius); padding: 24px; }.admin-grid > section > h2 { margin: 0 0 20px; }.queue-row { grid-template-columns: 1fr auto; }.queue-row strong, .queue-row span { display: block; }.queue-row span { margin-top: 5px; color: var(--muted); font-size: 12px; }.queue-row button { border: 0; border-radius: 999px; padding: 7px 10px; color: var(--cobalt); cursor: pointer; }
.quick-publish { display: grid; gap: 16px; }

/* Modals, feedback */
.modal { width: min(520px,calc(100% - 28px)); max-height: calc(100dvh - 28px); padding: 0; border: 0; border-radius: var(--radius); background: transparent; overflow: visible; }
.modal::backdrop { background: rgba(9,31,55,.54); backdrop-filter: blur(8px); }
.modal-card { position: relative; display: grid; gap: 18px; padding: 36px; border-radius: var(--radius); background: var(--cloud); box-shadow: 0 26px 90px rgba(6,29,55,.32); overflow: auto; max-height: calc(100dvh - 28px); }
.modal-card h2 { margin: 0; font-size: 31px; }.modal-card > p { margin: -7px 0 2px; color: var(--muted); line-height: 1.65; }
.modal-close { position: absolute; right: 15px; top: 14px; width: 38px; height: 38px; border: 0; border-radius: 50%; background: #e7f1f8; font-size: 25px; cursor: pointer; z-index: 2; }
.modal-orbit { width: 68px; height: 68px; border-radius: 50%; border: 2px solid var(--cobalt); position: relative; }.modal-orbit::after { content: ""; position: absolute; width: 14px; height: 14px; border-radius: 50%; right: 2px; top: 5px; background: var(--cyan); }
.code-row { display: grid; grid-template-columns: 1fr auto; gap: 10px; align-items: end; }.code-row label { min-width: 0; }.code-row button { height: 43px; border: 1px solid #acc8dd; border-radius: 12px; background: white; color: var(--cobalt); padding: 0 14px; font-weight: 750; cursor: pointer; }.code-row button:disabled { color: #75899b; background: #eaf1f6; cursor: wait; }
.form-error { min-height: 20px; margin: -5px 0 !important; color: var(--danger) !important; font-size: 13px; }
.contact-card { text-align: center; }.contact-qr { width: min(310px,100%); height: auto; margin: 5px auto; border: 10px solid white; border-radius: 12px; box-shadow: 0 8px 28px rgba(71,112,150,.15); }
.consult-prep { display: flex; flex-wrap: wrap; justify-content: center; gap: 7px; }.consult-prep strong { width: 100%; }.consult-prep span { border-radius: 999px; background: #e5f0f8; padding: 7px 9px; color: #496680; font-size: 11px; }
.profile-modal-card { gap: 22px; }.profile-header { display: flex; align-items: center; gap: 16px; padding-right: 40px; }.profile-header .avatar { width: 70px; height: 70px; }.profile-header h2 { margin: 0 0 5px; }.profile-header p { margin: 2px 0 0; color: var(--muted); }.profile-section { border-top: 1px solid var(--line); padding-top: 18px; }.profile-section h3 { margin: 0 0 10px; font-size: 14px; }.profile-section p { margin: 0; color: var(--muted); line-height: 1.65; }.profile-collaboration { display: grid; gap: 8px; }.profile-collaboration p { display: grid; grid-template-columns: 76px 1fr; gap: 8px; }.profile-collaboration strong { color: var(--ink); }.profile-privacy-note { margin: -8px 0 0 !important; color: var(--muted); font-size: 12px; }.profile-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 9px; }
.toast { position: fixed; left: 50%; bottom: 28px; z-index: 100; transform: translate(-50%,30px); opacity: 0; pointer-events: none; padding: 12px 18px; border-radius: 999px; color: white; background: #10284a; box-shadow: 0 14px 40px rgba(5,25,48,.3); transition: opacity .2s, transform .2s; font-size: 13px; }.toast.show { opacity: 1; transform: translate(-50%,0); }

@media (max-width: 1100px) {
  .public-nav { gap: 16px; }.public-nav a { font-size: 12px; }.header-actions .text-button { display: none; }
  .course-map-layout { grid-template-columns: 230px 1fr; gap: 26px; }
  .proof-inner { grid-template-columns: minmax(280px,360px) 1fr; gap: 52px; }
  .community-stage { gap: 45px; }.member-card.featured { left: 17%; }
  .alumni-grid { grid-template-columns: repeat(4,minmax(0,1fr)); }
}

@media (min-width: 1024px) {
  .reference-home { display: block; position: relative; width: 100%; aspect-ratio: 1670 / 937; overflow: hidden; background: #f7fbff; }
  .reference-home::before { content: ""; position: absolute; z-index: 2; inset: 65% 0 0; background: #f4f9ff; }
  .reference-home::after { content: ""; position: absolute; z-index: 3; inset: 0 0 auto; height: max(74px,8%); background: linear-gradient(90deg,#fff 0%,#f5f9ff 23%,#dbeafa 48%,#a9cff6 73%,#79b7f3 100%); }
  .reference-home > img { position: relative; z-index: 1; width: 100%; height: 100%; object-fit: fill; }
  .reference-hotspot { position: absolute; z-index: 5; border: 0; background: transparent; cursor: pointer; }
  .reference-hotspot:focus-visible { outline: 3px solid #0a76d5; outline-offset: 3px; border-radius: 999px; }
  .reference-explore { left: 4.8%; top: 42.2%; width: 13.9%; height: 6.3%; }
  .reference-contact { left: 88.2%; top: 2.5%; width: 8.1%; height: 4.8%; }
  .reference-nav-home { left: 33.5%; top: 2.7%; width: 3.1%; height: 4.4%; }
  .reference-nav-course { left: 37.7%; top: 2.7%; width: 4.2%; height: 4.4%; }
  .reference-nav-learning { left: 44.3%; top: 2.7%; width: 4.2%; height: 4.4%; }
  .reference-nav-teacher { left: 50.6%; top: 2.7%; width: 4.2%; height: 4.4%; }
  .reference-nav-works { left: 57.4%; top: 2.7%; width: 4.2%; height: 4.4%; }
  .reference-nav-about { left: 63.8%; top: 2.7%; width: 4.2%; height: 4.4%; }
  .reference-hotspot[class*="reference-nav-"] { display: none; }
  .reference-explore > span { position: absolute; inset: 0; display: grid; place-items: center; padding-right: 28px; border-radius: 999px; background: var(--cobalt); color: white; font-size: clamp(12px,1.05vw,17px); font-weight: 750; white-space: nowrap; }
  .reference-explore > span > i { position: absolute; right: 8%; top: 50%; width: clamp(23px,1.85vw,31px); aspect-ratio: 1; border-radius: 50%; background: white; color: var(--cobalt); transform: translateY(-50%); }
  .reference-explore > span > i::before { content: ""; position: absolute; left: 40%; top: 36%; width: 24%; height: 24%; border-top: 2px solid currentColor; border-right: 2px solid currentColor; transform: rotate(45deg); }
  .theme-player-reference { position: absolute; z-index: 6; left: 4.8%; top: 50%; min-height: 0; height: 5.2%; padding: .35% .9% .35% .4%; gap: .55vw; }
  .theme-player-reference .theme-player-icon { width: clamp(26px,2.05vw,35px); height: auto; aspect-ratio: 1; }
  .theme-player-reference .theme-player-copy small { font-size: clamp(8px,.58vw,10px); }
  .theme-player-reference .theme-player-copy strong { font-size: clamp(9px,.72vw,12px); }
  .reference-map-heading { position: absolute; z-index: 4; left: 4.8%; top: 72.5%; width: 21%; min-height: 18%; padding: 24px 10px 18px 0; background: linear-gradient(90deg,#f6faff 0 84%,rgba(246,250,255,0)); color: var(--ink); }
  .reference-map-heading h2 { margin: 0; font-size: clamp(22px,2vw,32px); letter-spacing: -.02em; }
  .reference-map-heading i { display: block; width: 42px; height: 4px; margin: 17px 0 24px; border-radius: 999px; background: var(--cobalt); }
  .reference-map-heading p { margin: 0; color: var(--muted); font-size: clamp(11px,.85vw,14px); line-height: 1.9; }
  .reference-course-hotspots { position: absolute; z-index: 4; left: 24%; right: 1.8%; bottom: 0; width: auto; aspect-ratio: 4 / 1; min-height: 0; }
  .reference-course-hotspots::before { background-size: contain; mask-image: none; -webkit-mask-image: none; }
  .reference-course-hotspots .atlas-node { width: clamp(72px,6.6vw,112px); min-height: 0; }
  .reference-course-hotspots .atlas-island { height: clamp(62px,6.4vw,106px); }
  .reference-course-hotspots .atlas-label { min-height: clamp(22px,1.8vw,29px); padding: 3px clamp(6px,.55vw,9px); }
  .reference-course-hotspots .atlas-node small { font-size: clamp(8px,.62vw,10px); }
  .reference-course-hotspots .atlas-node strong { font-size: clamp(9px,.72vw,12px); }
  .reference-course-hotspots .lab-satellite { left: 1%; top: -8%; transform: scale(.8); transform-origin: left top; }
  .reference-course-hotspots .lab-satellite:hover { transform: translateY(-3px) scale(.8); }
  .hero, .course-world { display: none; }
  .site-header:not(.scrolled) { opacity: 1; pointer-events: auto; }
}

@media (max-width: 820px) {
  .page-shell { width: min(100% - 30px, 680px); }
  .site-header { height: 66px; padding-inline: 15px; grid-template-columns: 1fr auto; }.public-nav { position: fixed; left: 15px; right: 15px; top: 72px; display: none; padding: 14px; border-radius: 16px; background: rgba(247,251,255,.98); box-shadow: var(--shadow); }.public-nav.open { display: grid; }.public-nav a { padding: 12px; }.public-nav a::after { display: none; }.header-actions .primary-button { display: none; }.header-actions .text-button { display: block; padding: 8px 3px; font-size: 12px; }.menu-button { display: grid; }
  .hero { min-height: 660px; height: 88dvh; }.hero-poster { z-index: -4; background-position: 63% center; }.hero-wash { background: linear-gradient(180deg,rgba(255,255,255,.92),rgba(255,255,255,.68) 48%,rgba(255,255,255,.08)); }.hero-content { padding-top: 130px; }.hero h1 { font-size: clamp(48px,12vw,69px); }.hero-copy { font-size: 18px; max-width: 90%; }.theme-player-mobile { display: inline-flex; }
  .manifesto, .learning, .faq { padding: 90px 0; }.manifesto-copy, .community-stage { grid-template-columns: 1fr; gap: 40px; }.truth-strip { grid-template-columns: repeat(2,1fr); gap: 0; margin-top: 55px; }.truth-strip div { border-bottom: 1px solid var(--line); padding: 23px; }.truth-strip div:nth-child(2) { border-right: 0; }.truth-strip div:nth-child(3), .truth-strip div:nth-child(4) { border-bottom: 0; }.truth-strip div:nth-child(3) { padding-left: 0; }
  .course-world { padding: 72px 0; }.course-map-layout { grid-template-columns: 1fr; gap: 38px; }.course-map-intro { padding-top: 0; }.course-map-stage { overflow: hidden; padding-bottom: 8px; }.course-map-viewport { width: calc(100vw - 15px); margin-right: -15px; overflow-x: auto; overscroll-behavior-inline: contain; scroll-snap-type: x proximity; scrollbar-width: none; }.course-map-viewport::-webkit-scrollbar { display: none; }.atlas { width: 900px; min-height: 0; }.map-mobile-guide { display: grid; grid-template-columns: 42px minmax(0,1fr) 42px; align-items: center; gap: 12px; width: calc(100vw - 30px); margin-top: 8px; }.map-mobile-guide>button { width: 42px; height: 42px; border: 1px solid rgba(35,107,200,.18); border-radius: 50%; background: rgba(255,255,255,.85); color: var(--cobalt); font-size: 26px; cursor: pointer; }.map-mobile-guide>button:disabled { opacity: .3; cursor: default; }.map-progress { display: grid; grid-template-columns: auto 1fr; align-items: center; gap: 6px 12px; }.map-progress>span { color: var(--cobalt-dark); font-size: 12px; font-weight: 800; white-space: nowrap; }.map-progress-track { height: 3px; overflow: hidden; border-radius: 999px; background: #cfe0f0; }.map-progress-track i { display: block; width: 14.285%; height: 100%; border-radius: inherit; background: var(--cobalt); transition: transform .3s cubic-bezier(.16,1,.3,1); }.map-progress small { grid-column: 1 / -1; color: var(--muted); font-size: 10px; text-align: center; transition: opacity .25s; }.map-progress small.dismissed { opacity: 0; }.airship-brand { display: none; }
  .lab-layout { grid-template-columns: 1fr; gap: 44px; }.lab-copy > p { max-width: 38em; }.lab-visual { height: 280px; }.world-news-layout { grid-template-columns: 1fr 1fr; }.world-news-layout > div { grid-column: 1 / -1; padding-right: 0; }.world-news-story { height: 300px; }
  .proof { padding: 82px 0; }.proof-inner { grid-template-columns: minmax(260px,340px) 1fr; gap: 42px; }.teacher-evidence { grid-template-columns: repeat(3,minmax(0,1fr)); }.learning-title h2 { font-size: clamp(36px,6.2vw,48px); white-space: normal; }.learning-flow { grid-template-columns: repeat(2,1fr); }.learning-flow article:nth-child(2) { border-right: 0; }.learning-flow article:nth-child(3), .learning-flow article:nth-child(4) { border-top: 1px solid var(--line); }.learning-flow article:nth-child(3) { padding-left: 0; }.flow-mark { margin-bottom: 25px; }
  .community-preview { padding: 85px 0; }.member-orbits { min-height: 460px; }.member-card.featured { left: 18%; }.student-works { padding: 90px 0; }.student-works-header { grid-template-columns: 1fr; gap: 28px; }.student-works-header h2 { font-size: 48px; }.works-filter { justify-content: flex-start; overflow-x: auto; padding-bottom: 6px; scrollbar-width: none; }.assignment-genres { margin-top: -14px; }.student-work-rail { padding-inline: calc(50vw - 96px); }.student-work-card { width: 192px; }.works-arrow { width: 44px; height: 44px; }.work-detail-shell, .assignment-detail { grid-template-columns: 1fr; gap: 22px; }.work-detail-cover, .assignment-detail .work-detail-cover { width: 180px; }.work-detail-heading h3 { font-size: clamp(24px,6vw,30px); }.audience { padding-bottom: 90px; }.audience-grid { grid-template-columns: repeat(2,1fr); }
  .site-footer .page-shell { grid-template-columns: 1fr; gap: 25px; }
  .community-app { grid-template-columns: 1fr; }.app-sidebar { position: fixed; left: 0; top: 0; bottom: 0; width: 250px; transform: translateX(-105%); transition: transform .25s; }.app-sidebar.open { transform: translateX(0); }.app-topbar { grid-template-columns: auto 1fr auto; padding: 0 16px; }.sidebar-toggle { display: block; }.app-content { padding: 22px 16px; }.welcome-banner { grid-template-columns: 1fr; padding: 35px 30px; }.lesson-orbit { position: absolute; right: -70px; top: 20px; opacity: .45; }.dashboard-grid, .events-layout, .admin-grid { grid-template-columns: 1fr; }.dashboard-section.bulletin { grid-column: auto; }.work-feature { grid-template-columns: 220px 1fr; gap: 25px; }.work-art { width: 180px; height: 180px; }.admin-stats { grid-template-columns: repeat(2,1fr); }.alumni-grid { grid-template-columns: repeat(3,minmax(0,1fr)); }
  .alumni-toolbar { grid-template-columns: 1fr auto; }.alumni-toolbar>div { grid-column: 1 / -1; }.member-search { min-width: 0; }.member-filter-panel { width: min(390px,92vw); }.alumni-discovery-tabs button { padding-inline: 13px; }
}

@media (max-width: 560px) {
  .hero-content { padding-top: 120px; }.brand-line { font-size: 13px; }.hero h1 { max-width: 330px; font-size: 48px; line-height: 1.12; }.hero-copy { max-width: 300px; font-size: 17px; letter-spacing: .08em; }.hero-actions { align-items: stretch; flex-direction: column; max-width: 230px; }
  .manifesto h2, .section-heading h2, .learning h2, .audience h2, .community-copy h2 { font-size: 39px; }.course-map-intro .section-heading h2 { font-size: 32px; }.truth-strip dt { font-size: 37px; }.course-world { padding-top: 64px; }.atlas-node { min-height: 130px; }.atlas-island { height: 92px; }.atlas-node strong { font-size: 12px; }.interactive-lab { padding: 76px 0; }.lab-copy h2 { font-size: 45px; }.lab-copy > p { font-size: 15px; }.lab-visual { height: 230px; }.orbit-one { width: 190px; height: 190px; }.orbit-two { width: 310px; height: 130px; }.lab-pulse { width: 92px; height: 92px; }.lab-bars { inset-inline: 1%; gap: 6px; }.lab-controls { padding: 22px 18px; }.lab-heading strong { font-size: 18px; }.lab-presets button { flex: 1 1 42%; }.lab-satellite { transform: scale(.9); transform-origin: left top; }
  .proof { padding: 64px 0 72px; }.proof-inner { grid-template-columns: 1fr; gap: 34px; }.proof-image { width: 100%; aspect-ratio: 4 / 3; border-radius: 16px 44px 16px 16px; }.proof-image img { object-position: 46% 76%; }.teacher-name { font-size: 42px; margin-bottom: 24px; }.teacher-summary { font-size: 19px; }.teacher-evidence { grid-template-columns: repeat(2,minmax(0,1fr)); gap: 24px 16px; padding: 24px 0; }.teacher-evidence div:nth-child(n+4) { margin-top: 0; }.teacher-evidence div:last-child { grid-column: 1 / -1; }.teacher-evidence dt { font-size: 26px; }.teacher-evidence dd { font-size: 15px; }.works-list { grid-template-columns: 1fr; }.learning-flow { grid-template-columns: 1fr; }.learning-flow article, .learning-flow article + article, .learning-flow article:nth-child(3) { border-right: 0; border-top: 1px solid var(--line); padding: 26px 0; min-height: 0; }.learning-flow article:first-child { border-top: 0; }.community-copy h2 { font-size: 42px; }.member-orbits { min-height: 410px; transform: scale(.86); transform-origin: center top; margin-bottom: -55px; }.member-card.featured { left: 10%; }.card-b { left: -4%; }.card-c { right: -9%; }.student-works { padding: 72px 0; }.student-works-header h2 { font-size: 42px; }.student-works-header p { font-size: 15px; }.works-search { min-width: 0; }.works-filter { margin: 24px 0 26px; }.works-filter button { padding-inline: 15px; font-size: 12px; }.student-work-rail { gap: 20px; padding-top: 24px; padding-inline: calc(50vw - 82px); }.student-work-card { width: 164px; }.works-arrow { display: none; }.student-work-detail { margin-top: 10px; }.work-detail-shell { gap: 18px; padding: 18px; }.work-detail-cover { width: 150px; }.work-detail-heading { align-items: flex-start; flex-direction: column; gap: 10px; }.work-detail-heading h3 { font-size: 24px; }.work-audio-player { grid-template-columns: 46px minmax(0,1fr); gap: 14px; }.work-wave-wrap, .work-wave-canvas { height: 46px; }.work-progress::-webkit-slider-thumb { margin-top: 16.5px; }.work-credit-highlights, .work-credit-details dl { grid-template-columns: 1fr; }.work-mv-placeholder { min-height: 165px; }.world-news { padding: 76px 0; }.world-news-layout { grid-template-columns: 1fr; }.world-news-layout > div { grid-column: auto; }.world-news-story { height: 250px; }.audience-grid { grid-template-columns: 1fr; }.audience-grid a { min-height: 100px; }.final-cta-inner { flex-direction: column; align-items: flex-start; }.final-cta h2 { font-size: 42px; }.final-actions { width: 100%; }.final-actions > * { flex: 1; }
  .app-topbar { grid-template-columns: auto 1fr; }.notification-button { display: none; }.panel-title { flex-direction: column; }.panel-title h1 { font-size: 32px; }.alumni-grid { grid-template-columns: repeat(2,minmax(0,1fr)); gap: 10px; }.work-grid, .resource-grid, .admin-stats { grid-template-columns: 1fr; }.connection-item { grid-template-columns: 46px 1fr; }.connection-actions { grid-column: 1 / -1; justify-content: flex-end; }.work-feature { grid-template-columns: 1fr; padding: 28px 22px; }.work-art { width: 160px; height: 160px; }.events-layout { display: block; }.event-calendar { overflow-x: auto; margin-bottom: 16px; }.calendar-grid { min-width: 480px; }.modal-card { padding: 30px 22px; }.code-row { grid-template-columns: 1fr; }.code-row button { width: 100%; }.profile-actions { grid-template-columns: 1fr; }
  .alumni-panel-title { margin-bottom: 14px; }.alumni-panel-title p { font-size: 13px; }.alumni-toolbar { grid-template-columns: 1fr auto; gap: 10px; }.member-search { grid-column: 1 / -1; grid-row: 2; }.member-filter-toggle { grid-column: 2; grid-row: 1; }.alumni-toolbar h2 { font-size: 20px; }.alumni-card { min-height: 286px; padding: 13px; }.alumni-card-top .avatar { width: 38px; height: 38px; }.match-reason { max-width: 60%; padding: 4px 6px; font-size: 8px; }.alumni-name { margin-top: 11px; }.alumni-name h2 { font-size: 15px; }.alumni-name span { font-size: 8px; }.alumni-meta { font-size: 9px; white-space: nowrap; }.alumni-identity { min-height: 31px; margin-top: 10px; font-size: 11px; }.alumni-bio { min-height: 34px; font-size: 10px; line-height: 1.65; }.alumni-card .tag-row { max-height: 48px; overflow: hidden; }.alumni-card .tag { font-size: 8px; }.need-badge { font-size: 9px; }.alumni-discovery-tabs { margin-inline: -16px; padding-inline: 16px; }.member-filter-panel { width: 100vw; padding-inline: 20px; }.member-filter-actions { margin-inline: -20px; padding-inline: 20px; }
}

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

@supports not (backdrop-filter: blur(10px)) {
  .site-header.scrolled, .app-topbar { background: #f7fbff; }
}