/* ============================================================
   星火燎原 · 逍遥宇宙 — 2026 大会官网
   Design system: light "paper" field, ink typography,
   cyan → violet → magenta signal gradient, serif display.
   Motion: layered aurora drift, ember canvas, masked line
   reveals, scroll parallax. Fully fluid desktop → phone.
   ============================================================ */

:root {
  --paper: #f4f8ff;
  --paper-2: #ebf2fc;
  --paper-3: #f8fbff;
  --surface: #ffffff;
  --ink: #0c1930;
  --text: #22314e;
  --muted: #5c6a85;
  --faint: #8a97b1;
  --cyan: #1fb7e8;
  --cyan-deep: #0f93c7;
  --violet: #7b6cf0;
  --magenta: #ff5f9e;
  --gold: #f0a92e;
  --gold-soft: #ffd27a;
  --line: rgba(13, 27, 52, .1);
  --line-2: rgba(13, 27, 52, .18);
  --container: 1440px;
  --header-h: 84px;
  --gutter: 32px;
  --ease: cubic-bezier(.22, 1, .36, 1);
  --ease-out: cubic-bezier(.16, 1, .3, 1);
  --serif: "Songti SC", "STSong", "Noto Serif SC", "SimSun", serif;
  --sans: "SF Pro Display", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --shadow-card: 0 2px 6px rgba(13, 27, 52, .04), 0 18px 44px rgba(13, 27, 52, .08);
  --shadow-float: 0 30px 80px rgba(13, 27, 52, .14);
  --grad-cta: linear-gradient(135deg, #22b8ea 0%, #6f8bf2 52%, #8f6ff0 100%);
  --grad-title: linear-gradient(115deg, #1fb7e8 10%, #7b6cf0 55%, #ff5f9e 95%);
  --hairline: rgba(60, 85, 137, .16);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  color: var(--text);
  background: var(--paper);
  font-family: var(--sans);
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
body.modal-open, body.menu-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
button, input, textarea { font: inherit; }
button { color: inherit; }
img { max-width: 100%; }
button:focus-visible, a:focus-visible, input:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--cyan); outline-offset: 3px;
}
.serif { font-family: var(--serif); }
::selection { background: rgba(123, 108, 240, .22); }

.container { width: min(var(--container), calc(100% - var(--gutter) * 2)); margin-inline: auto; }
main { position: relative; z-index: 1; }
main > section { position: relative; isolation: isolate; scroll-margin-top: calc(var(--header-h) - 8px); }
main > section > .container { position: relative; z-index: 2; }

/* ---------- Atmosphere layers ---------- */
.noise {
  position: fixed; inset: 0; z-index: 99; pointer-events: none; opacity: .026;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.7'/%3E%3C/svg%3E");
}
.page-aurora { position: fixed; inset: 0; z-index: 0; pointer-events: none; overflow: hidden; }
.page-aurora i {
  position: absolute; width: 58vw; height: 58vw; border-radius: 50%;
  filter: blur(90px); opacity: .12; will-change: transform;
}
.page-aurora i:nth-child(1) {
  left: -18vw; top: -14vw; background: radial-gradient(circle, #7ecdf2, transparent 66%);
  animation: auroraDrift1 46s ease-in-out infinite alternate;
}
.page-aurora i:nth-child(2) {
  right: -20vw; top: 22vh; background: radial-gradient(circle, #b7a8ff, transparent 66%);
  animation: auroraDrift2 58s ease-in-out infinite alternate;
}
.page-aurora i:nth-child(3) {
  left: 24vw; bottom: -26vw; background: radial-gradient(circle, #ffc4dd, transparent 66%);
  animation: auroraDrift3 64s ease-in-out infinite alternate;
}
@keyframes auroraDrift1 { to { transform: translate(9vw, 7vh) scale(1.18); } }
@keyframes auroraDrift2 { to { transform: translate(-8vw, -9vh) scale(1.12); } }
@keyframes auroraDrift3 { to { transform: translate(-10vw, -6vh) scale(1.22); } }

.cursor-light {
  position: fixed; left: 0; top: 0; z-index: 2; width: 520px; height: 520px; border-radius: 50%;
  pointer-events: none; opacity: 0; transform: translate(-50%, -50%);
  background: radial-gradient(circle, rgba(31, 183, 232, .08), transparent 66%); transition: opacity .4s;
}
@media (pointer: fine) { body:hover .cursor-light { opacity: 1; } }

/* ---------- Loader ---------- */
.page-loader {
  position: fixed; inset: 0; z-index: 9999; display: grid; place-content: center; justify-items: center; gap: 26px;
  overflow: hidden;
  color: var(--muted); text-align: center; background: var(--paper);
  transition: opacity .7s var(--ease), visibility .7s;
}
body.loaded .page-loader { opacity: 0; visibility: hidden; }
.loader-logo { width: min(220px, 58vw); height: auto; display: block; animation: loaderBreath 1.6s ease-in-out infinite alternate; }
@keyframes loaderBreath { from { opacity: .55; transform: translateY(4px); } to { opacity: 1; transform: none; } }
.loader-text { letter-spacing: .3em; font-size: 13px; text-indent: .3em; }
.loader-bar { width: 148px; height: 2px; overflow: hidden; border-radius: 2px; background: rgba(13, 27, 52, .08); }
.loader-bar b { display: block; width: 40%; height: 100%; border-radius: 2px; background: var(--grad-cta); animation: loaderRun 1.2s var(--ease) infinite; }
@keyframes loaderRun { from { transform: translateX(-110%); } to { transform: translateX(280%); } }

/* ---------- Header ---------- */
.site-header {
  position: fixed; inset: 0 0 auto; z-index: 120; height: var(--header-h); display: flex; align-items: center;
  padding-inline: max(var(--gutter), calc((100vw - var(--container)) / 2));
  color: var(--ink); background: rgba(244, 248, 255, .72);
  -webkit-backdrop-filter: blur(18px) saturate(1.1); backdrop-filter: blur(18px) saturate(1.1);
  border-bottom: 1px solid transparent;
  transition: height .4s var(--ease), background .4s, border-color .4s, box-shadow .4s;
}
.site-header.scrolled {
  height: 66px; background: rgba(250, 252, 255, .9);
  border-bottom-color: var(--line); box-shadow: 0 12px 36px rgba(13, 27, 52, .07);
}
.brand { display: flex; align-items: center; flex-shrink: 0; }
.brand-logo { display: block; width: clamp(128px, 13vw, 178px); height: auto; }
.footer-brand .brand-logo { width: clamp(150px, 15vw, 208px); }
.desktop-nav { display: flex; align-items: center; gap: clamp(20px, 2.4vw, 40px); margin-inline: auto; }
.desktop-nav a { position: relative; padding: 6px 0; font-size: 14px; color: rgba(13, 27, 52, .6); transition: color .25s; }
.desktop-nav a::after {
  content: ""; position: absolute; left: 0; right: 100%; bottom: 0; height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--violet)); transition: right .35s var(--ease);
}
.desktop-nav a:hover { color: var(--ink); }
.desktop-nav a:hover::after { right: 0; }
.desktop-nav a.is-active, .desktop-nav a[aria-current] { color: var(--ink); font-weight: 700; }
.desktop-nav a.is-active::after, .desktop-nav a[aria-current]::after { right: 0; }
.header-actions { display: flex; align-items: center; gap: 16px; flex-shrink: 0; }

/* ---------- Buttons ---------- */
.btn {
  min-height: 50px; border: 0; border-radius: 999px; padding: 0 28px;
  display: inline-flex; align-items: center; justify-content: center; gap: 22px;
  cursor: pointer; font-size: 14px; font-weight: 650; letter-spacing: .04em; white-space: nowrap;
  transition: transform .35s var(--ease), background .3s, color .3s, border-color .3s, box-shadow .3s;
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0) scale(.98); }
.btn-primary { position: relative; overflow: hidden; color: var(--surface); background: var(--grad-cta); box-shadow: 0 14px 32px rgba(111, 139, 242, .34); }
.btn-primary::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(115deg, transparent 30%, rgba(255, 255, 255, .38) 50%, transparent 70%);
  transform: translateX(-120%); transition: transform .8s var(--ease);
}
.btn-primary:hover { box-shadow: 0 18px 42px rgba(111, 139, 242, .46); }
.btn-primary:hover::after { transform: translateX(120%); }
.btn-primary span, .btn-primary i { position: relative; z-index: 1; }
.btn-primary i { font-style: normal; font-size: 17px; }
.btn-nav { min-height: 42px; padding: 0 20px; color: var(--ink); background: rgba(255, 255, 255, .7); border: 1px solid var(--line-2); }
.btn-nav:hover { background: var(--ink); color: var(--surface); border-color: var(--ink); }
.btn-ghost { color: var(--ink); background: transparent; border: 1px solid var(--line-2); }
.btn-ghost:hover { background: var(--surface); border-color: var(--ink); }
.btn-light { color: #fff; background: var(--grad-cta); box-shadow: 0 14px 34px rgba(87, 105, 215, .28); }
.btn-outline-light { color: var(--ink); background: rgba(255, 255, 255, .4); border: 1px solid rgba(13, 27, 52, .26); }
.btn-outline-light:hover { background: rgba(255, 255, 255, .78); border-color: rgba(13, 27, 52, .5); }

.menu-toggle {
  display: none; width: 44px; height: 44px; border: 1px solid var(--line-2); border-radius: 12px;
  background: var(--surface); cursor: pointer; flex-shrink: 0;
}
.menu-toggle i { display: block; width: 18px; height: 2px; margin: 5px auto; background: var(--ink); border-radius: 2px; transition: transform .3s var(--ease); }
.menu-open .menu-toggle i:first-child { transform: translateY(3.5px) rotate(45deg); }
.menu-open .menu-toggle i:last-child { transform: translateY(-3.5px) rotate(-45deg); }

.mobile-menu {
  position: fixed; inset: 0; z-index: 110; display: none; color: var(--ink);
  background: rgba(244, 248, 255, .97); -webkit-backdrop-filter: blur(20px); backdrop-filter: blur(20px);
  visibility: hidden; opacity: 0; transition: opacity .35s, visibility .35s;
}
.menu-open .mobile-menu { visibility: visible; opacity: 1; }
.mobile-menu-inner { width: min(620px, calc(100% - 48px)); margin: calc(var(--header-h) + 34px) auto 0; display: grid; }
.mobile-menu .menu-index { margin-bottom: 26px; color: var(--muted); font-size: 13px; letter-spacing: .2em; }
.mobile-menu a {
  display: flex; align-items: baseline; padding: 17px 0; font-size: clamp(24px, 6.4vw, 30px); font-weight: 750;
  border-bottom: 1px solid var(--line); opacity: 0; transform: translateY(14px);
  transition: opacity .5s var(--ease), transform .5s var(--ease), color .25s;
}
.menu-open .mobile-menu a { opacity: 1; transform: none; }
.menu-open .mobile-menu a:nth-child(2) { transition-delay: .05s; }
.menu-open .mobile-menu a:nth-child(3) { transition-delay: .1s; }
.menu-open .mobile-menu a:nth-child(4) { transition-delay: .15s; }
.menu-open .mobile-menu a:nth-child(5) { transition-delay: .2s; }
.menu-open .mobile-menu a:nth-child(6) { transition-delay: .25s; }
.menu-open .mobile-menu a:nth-child(7) { transition-delay: .3s; }
.mobile-menu a b { display: inline-block; width: 52px; color: var(--cyan); font-size: 13px; font-weight: 700; letter-spacing: .1em; }
.mobile-menu a.is-active { color: #665ed4; }
.mobile-menu a.is-active b { color: #665ed4; }
.mobile-menu .btn { margin-top: 32px; justify-self: start; min-width: 200px; }

/* ---------- Hero ---------- */
.hero {
  position: relative; min-height: max(760px, 100svh); overflow: hidden;
  color: var(--ink); background: var(--paper);
}
.hero-bg {
  position: absolute; inset: -4% 0; background: url("assets/hero-life-wide-hd.webp") 56% 42% / cover no-repeat;
  will-change: transform; animation: heroBreathe 24s ease-in-out infinite alternate;
}
@keyframes heroBreathe { from { scale: 1; } to { scale: 1.055; } }
.hero-aurora { position: absolute; inset: 0; pointer-events: none; }
.hero-aurora i { position: absolute; border-radius: 50%; filter: blur(70px); will-change: transform; }
.hero-aurora i:nth-child(1) {
  width: 44vw; height: 44vw; left: -12vw; top: -10vw; opacity: .3;
  background: radial-gradient(circle, rgba(126, 205, 242, .5), transparent 66%);
  animation: auroraDrift1 30s ease-in-out infinite alternate;
}
.hero-aurora i:nth-child(2) {
  width: 38vw; height: 38vw; right: 4vw; bottom: -16vw; opacity: .26;
  background: radial-gradient(circle, rgba(255, 196, 221, .55), transparent 66%);
  animation: auroraDrift2 38s ease-in-out infinite alternate;
}
.hero-veil { position: absolute; inset: 0; pointer-events: none; background:
  linear-gradient(90deg, rgba(246, 250, 255, .97) 0%, rgba(246, 250, 255, .9) 22%, rgba(246, 250, 255, .6) 40%, rgba(246, 250, 255, .06) 62%, transparent 78%),
  linear-gradient(180deg, rgba(246, 250, 255, .2) 0%, transparent 26%, transparent 66%, rgba(244, 248, 255, .72) 100%);
}
#sparkCanvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }

.hero-inner {
  position: relative; z-index: 3; width: min(var(--container), calc(100% - var(--gutter) * 2));
  min-height: max(760px, 100svh); margin-inline: auto;
  display: grid; grid-template-columns: minmax(0, .92fr) minmax(480px, 1.08fr);
  align-items: center; padding: calc(var(--header-h) + 44px) 0 120px;
}
.hero-copy { position: relative; z-index: 2; max-width: 640px; }
.hero-kicker {
  display: flex; align-items: center; gap: 16px; margin-bottom: clamp(20px, 2.4vw, 30px);
  color: var(--muted); font-size: 13px; letter-spacing: .18em; font-weight: 650; white-space: nowrap;
}
.hero-kicker i { width: 56px; height: 1px; background: linear-gradient(90deg, transparent, var(--cyan), transparent); }
.hero-kicker sup { color: var(--cyan); font-weight: 800; }

.hero-title { position: relative; margin: 0; line-height: .96; letter-spacing: -.04em; text-shadow: 0 8px 48px rgba(255, 255, 255, .95); }
.hero-title::before {
  content: ""; position: absolute; inset: -14% -10%; z-index: -1; pointer-events: none;
  background: radial-gradient(46% 58% at 42% 64%, rgba(123, 108, 240, .18), transparent 72%);
}
.hero-title .line { display: block; overflow: hidden; padding-bottom: .1em; margin-bottom: -.1em; }
.hero-title .line-inner {
  position: relative; display: block; width: max-content; max-width: 100%; font-weight: 850;
  font-size: clamp(60px, 7vw, 116px);
}
.hero-title .line-accent .line-inner { margin-left: clamp(30px, 4.5vw, 76px); }

/* 「星火燎原」— 墨色为底，火光周期性地从左到右点燃字形 */
.line-fire { color: var(--ink); }
.line-fire::before {
  content: attr(data-text); position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(100deg, #ffd27a 5%, #ffb35e 38%, #ff7a6e 62%, #ff5f9e 92%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  -webkit-mask-image: linear-gradient(100deg, transparent 26%, #000 45%, #000 55%, transparent 74%);
  mask-image: linear-gradient(100deg, transparent 26%, #000 45%, #000 55%, transparent 74%);
  -webkit-mask-size: 300% 100%; mask-size: 300% 100%;
  -webkit-mask-position: 0% 0; mask-position: 0% 0;
  animation: fireSweep 5.6s ease-in-out infinite;
}
@keyframes fireSweep {
  0% { -webkit-mask-position: 0% 0; mask-position: 0% 0; }
  62%, 100% { -webkit-mask-position: 100% 0; mask-position: 100% 0; }
}

/* 「逍遥宇宙」— 宇宙色无缝单向流动 */
.hero-title .title-accent {
  background: repeating-linear-gradient(115deg, #1fb7e8 0%, #7b6cf0 12%, #ff5f9e 25%, #f0a92e 37%, #1fb7e8 50%);
  background-size: 200% 100%;
  -webkit-background-clip: text; background-clip: text; color: transparent;
  animation: cosmosFlow 6.5s linear infinite;
}
@keyframes cosmosFlow {
  from { background-position: 0% 0; }
  to { background-position: 100% 0; }
}
body.loaded .hero-title .line-inner { animation: lineRise 1.1s var(--ease-out) both; }
body.loaded .hero-title .line:nth-child(2) .line-inner { animation-delay: .12s; }

.hero-identity { position: relative; max-width: 600px; margin: clamp(22px, 2.4vw, 32px) 0 0; padding: 0; }
.hero-event-name { margin: 0; color: var(--ink); font-size: clamp(16px, 1.5vw, 21px); font-weight: 800; letter-spacing: .03em; line-height: 1.55; text-shadow: 0 2px 18px rgba(255, 255, 255, .92); }
.hero-event-name em {
  background: var(--grad-title); -webkit-background-clip: text; background-clip: text; color: transparent; font-style: normal;
}
.hero-event-sub { display: flex; align-items: center; gap: 10px; margin: 9px 0 0; color: var(--muted); font-size: 13px; letter-spacing: .1em; text-shadow: 0 2px 14px rgba(255, 255, 255, .92); }
.hero-event-sub i { flex: 0 0 auto; width: 7px; height: 7px; border-radius: 50%; background: var(--gold); box-shadow: 0 0 12px rgba(240, 169, 46, .8); animation: pulse 2s infinite; }
.hero-cta { display: flex; align-items: center; gap: 26px; margin-top: clamp(24px, 2.6vw, 36px); }
.hero-cta .btn { min-width: 180px; min-height: 56px; }
.hero-partner-link {
  display: inline-flex; align-items: center; gap: 16px; min-height: 48px; padding: 0 0 2px;
  border: 0; border-bottom: 1px solid rgba(13, 27, 52, .32); color: var(--ink);
  background: transparent; cursor: pointer; font-size: 14px; font-weight: 700; letter-spacing: .06em; white-space: nowrap;
}
.hero-partner-link span { transition: transform .3s var(--ease); }
.hero-partner-link:hover span { transform: translateX(6px); }
.hero-audience { margin: clamp(26px, 3vw, 40px) 0 0; color: rgba(13, 27, 52, .5); font-size: 12px; line-height: 1.6; letter-spacing: .14em; }

.hero-info-card {
  position: absolute; right: 0; bottom: clamp(64px, 9vh, 100px); z-index: 4;
  width: min(460px, 36vw); padding: 24px 26px 22px; color: var(--ink);
  border: 1px solid rgba(255, 255, 255, .78); border-radius: 24px;
  background: rgba(250, 252, 255, .68);
  box-shadow: 0 26px 70px rgba(69, 93, 146, .16), inset 0 1px 0 rgba(255, 255, 255, .85);
  -webkit-backdrop-filter: blur(22px) saturate(1.25); backdrop-filter: blur(22px) saturate(1.25);
}
.hero-info-card::before { content: ""; position: absolute; inset: 8px; pointer-events: none; border: 1px solid rgba(83, 111, 171, .1); border-radius: 17px; }
.hero-info-topline { position: relative; display: flex; align-items: center; gap: 10px; padding-bottom: 15px; color: var(--muted); font-size: 11px; letter-spacing: .14em; font-weight: 650; }
.hero-info-topline i { width: 5px; height: 5px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 12px rgba(31, 183, 232, .8); animation: pulse 2s infinite; }
.hero-info-topline b { margin-left: auto; color: var(--ink); font-size: 11px; font-weight: 700; letter-spacing: .08em; }
.hero-info-grid { position: relative; display: grid; grid-template-columns: 1fr 1fr; border-block: 1px solid rgba(13, 27, 52, .1); }
.hero-info-item { padding: 17px 14px 16px 0; }
.hero-info-item + .hero-info-item { padding-left: 20px; border-left: 1px solid rgba(13, 27, 52, .1); }
.hero-info-item > span { display: block; color: var(--violet); font-size: 11px; font-weight: 800; letter-spacing: .14em; }
.hero-info-item strong { display: block; margin-top: 7px; color: var(--ink); font-size: 19px; font-weight: 800; letter-spacing: -.02em; }
.hero-info-item small { display: block; margin-top: 3px; color: var(--muted); font-size: 12px; }
.hero-info-countdown { position: relative; display: flex; align-items: center; justify-content: space-between; gap: 14px; padding-top: 17px; }
.countdown-label { color: var(--muted); font-size: 11px; letter-spacing: .16em; font-weight: 700; }
.countdown { display: flex; align-items: center; gap: 12px; }
.countdown div { display: grid; gap: 3px; text-align: center; }
.countdown strong {
  font-size: 27px; font-weight: 850; font-variant-numeric: tabular-nums; line-height: 1;
  background: var(--grad-title); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.countdown strong.tick { animation: tickPop .5s var(--ease); }
@keyframes tickPop { 30% { transform: translateY(-3px); } }
.countdown small { font-size: 10px; letter-spacing: .12em; color: var(--muted); }
.countdown > i { color: var(--violet); font-style: normal; font-weight: 800; }
@keyframes pulse { 50% { opacity: .35; transform: scale(.7); } }

.hero-scroll-cue {
  position: absolute; left: 50%; bottom: 26px; z-index: 5; display: flex; align-items: center; gap: 14px;
  color: rgba(13, 27, 52, .48); transform: translateX(-50%); font-size: 11px; letter-spacing: .18em;
}
.hero-scroll-cue i { width: 46px; height: 1px; background: linear-gradient(90deg, var(--violet), transparent); animation: scrollLine 1.8s ease-in-out infinite; transform-origin: left; }
@keyframes scrollLine { 0% { transform: scaleX(0); opacity: 0; } 35% { opacity: 1; } 100% { transform: scaleX(1); opacity: 0; } }

/* hero entrance delays */
.hero-copy .reveal { transition-delay: .3s; }
.hero-copy .reveal:nth-child(3) { transition-delay: .42s; }
.hero-copy .reveal:nth-child(4) { transition-delay: .52s; }
.hero-copy .reveal:nth-child(5) { transition-delay: .62s; }
.hero-info-card.reveal { transition-delay: .55s; }

/* ---------- Marquee ---------- */
.marquee { position: relative; z-index: 2; overflow: hidden; padding: clamp(22px, 2.6vw, 34px) 0; border-block: 1px solid var(--line); background: rgba(248, 251, 255, .6); }
.marquee-track { display: flex; align-items: center; gap: 34px; width: max-content; animation: marqueeMove 36s linear infinite; white-space: nowrap; }
.marquee:hover .marquee-track { animation-play-state: paused; }
.marquee-track span { font-size: clamp(26px, 3.2vw, 46px); font-weight: 800; letter-spacing: -.02em; color: var(--ink); }
.marquee-track i { color: var(--cyan); font-style: normal; font-size: 15px; }
@keyframes marqueeMove { to { transform: translateX(-50%); } }

/* ---------- Section head system ---------- */
.section-head { display: flex; justify-content: space-between; align-items: center; gap: 24px; padding-bottom: 20px; border-bottom: 1px solid var(--hairline); }
.eyebrow { display: flex; align-items: center; gap: 12px; color: var(--muted); font-size: 13px; font-weight: 650; letter-spacing: .16em; white-space: nowrap; }
.eyebrow i { width: 8px; height: 8px; border-radius: 50%; background: var(--grad-cta); box-shadow: 0 0 12px rgba(111, 139, 242, .6); flex-shrink: 0; }
.chapter-no {
  font-size: clamp(44px, 5vw, 72px); line-height: .85; font-weight: 850; letter-spacing: -.02em;
  color: transparent; -webkit-text-stroke: 1px rgba(59, 84, 136, .16);
}
.display-heading { margin: 0; font-size: clamp(30px, 3.3vw, 54px); line-height: 1.28; letter-spacing: -.03em; font-weight: 850; color: var(--ink); text-wrap: balance; }
.display-heading em, .serif em { background: var(--grad-title); -webkit-background-clip: text; background-clip: text; color: transparent; font-style: normal; }
.micro-label { background: var(--grad-title); -webkit-background-clip: text; background-clip: text; color: transparent; font-size: 13px; letter-spacing: .16em; font-weight: 800; }

/* masked line reveal */
.reveal-lines .line { display: block; overflow: hidden; padding-bottom: .1em; margin-bottom: -.1em; }
.reveal-lines .line-inner { display: block; transform: translateY(108%); transition: transform 1s var(--ease-out); }
.reveal-lines.in-view .line-inner { transform: none; }
.reveal-lines.in-view .line:nth-child(2) .line-inner { transition-delay: .1s; }
.reveal-lines.in-view .line:nth-child(3) .line-inner { transition-delay: .2s; }
.reveal-lines.in-view .line:nth-child(4) .line-inner { transition-delay: .3s; }

/* ---------- Manifesto ---------- */
.manifesto { padding: clamp(84px, 9vw, 130px) 0 clamp(72px, 8vw, 110px); background: linear-gradient(180deg, rgba(248, 251, 255, .86), rgba(244, 248, 255, .4)); }
.manifesto-narrative { position: relative; display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(300px, .75fr); gap: clamp(40px, 6vw, 110px); padding-top: clamp(48px, 6vw, 84px); }
.manifesto-thesis h2 { margin: 0; color: var(--ink); font-size: clamp(32px, 3.6vw, 60px); line-height: 1.18; letter-spacing: -.04em; font-weight: 850; }
.manifesto-copy { max-width: 520px; margin-top: clamp(28px, 3vw, 44px); }
.manifesto-copy p { margin: 0 0 20px; color: var(--muted); font-size: 15px; line-height: 1.95; }
.manifesto-quote { position: relative; margin: 0; padding: clamp(8px, 1vw, 20px) 0 0; color: var(--ink); align-self: center; }
.quote-mark { position: absolute; left: -8px; top: -52px; color: var(--violet); font-family: Georgia, serif; font-size: 84px; line-height: 1; opacity: .6; }
.manifesto-quote p {
  margin: 0; font-family: var(--serif); font-size: clamp(30px, 2.9vw, 46px); line-height: 1.28; letter-spacing: -.03em; font-weight: 850;
  background: var(--grad-title); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.manifesto-quote p strong { font-weight: 850; }
.manifesto-quote footer { margin-top: 20px; color: var(--muted); font-size: 13px; letter-spacing: .1em; }

.stats { display: grid; grid-template-columns: repeat(4, 1fr); margin-top: clamp(56px, 7vw, 96px); border-block: 1px solid var(--hairline); }
.stat { position: relative; min-height: 150px; padding: 26px 18px 28px; text-align: center; }
.stat + .stat { border-left: 1px solid var(--hairline); }
.stat::after {
  content: ""; position: absolute; left: 50%; bottom: -5px; width: 9px; height: 9px; border-radius: 50%;
  background: #b9a5ff; border: 3px solid rgba(255, 255, 255, .9); box-shadow: 0 0 18px rgba(123, 108, 240, .7); transform: translateX(-50%);
}
.stat > span { color: var(--muted); font-size: 11px; letter-spacing: .14em; font-weight: 650; }
.stat > div { display: flex; align-items: flex-start; justify-content: center; margin: 14px 0 8px; }
.stat strong {
  font-size: clamp(38px, 4vw, 58px); line-height: .95; letter-spacing: -.05em; font-weight: 850; font-variant-numeric: tabular-nums;
  background: var(--grad-title); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.stat b { background: var(--grad-title); -webkit-background-clip: text; background-clip: text; color: transparent; font-size: 22px; font-weight: 800; }
.stat p { margin: 0; color: var(--text); font-size: 13px; }

/* ---------- Highlights ---------- */
.highlights { padding: clamp(84px, 9vw, 128px) 0 clamp(80px, 9vw, 124px); overflow: hidden; background: linear-gradient(180deg, rgba(238, 245, 253, .7), rgba(244, 248, 255, .35)); }
.signal-river-art {
  position: absolute; top: clamp(80px, 9vw, 130px); right: -4%; z-index: 0; margin: 0;
  width: min(880px, 60vw); height: clamp(380px, 42vw, 560px); overflow: hidden; pointer-events: none;
  opacity: .9; -webkit-mask-image: linear-gradient(90deg, transparent 0%, rgba(0, 0, 0, .8) 22%, #000 48%, #000 84%, transparent 100%);
  mask-image: linear-gradient(90deg, transparent 0%, rgba(0, 0, 0, .8) 22%, #000 48%, #000 84%, transparent 100%);
  will-change: transform;
}
.signal-river-art img {
  width: 100%; height: 100%; display: block; object-fit: cover; object-position: 74% 46%;
  opacity: .34; filter: saturate(.98) contrast(1.02); animation: signalBreathe 12s ease-in-out infinite alternate;
}
#signalCanvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }
@keyframes signalBreathe { to { transform: scale(1.05) translate3d(6px, -6px, 0); } }
.highlights-stage { position: relative; z-index: 2; }
.signal-intro { position: relative; width: min(980px, 72vw); padding-top: clamp(44px, 5.5vw, 76px); }
.signal-intro .display-heading { font-size: clamp(30px, 3.6vw, 58px); line-height: 1.2; }
.signal-intro .display-heading .line-inner { }
.signal-intro > p { max-width: 560px; margin: 26px 0 0; color: var(--muted); font-size: 15px; line-height: 1.9; }

.signal-map {
  position: relative; z-index: 3; display: grid;
  grid-template-columns: 1.4fr 1fr 1.08fr 1.35fr 1.12fr;
  margin-top: clamp(52px, 6vw, 88px); border-block: 1px solid var(--hairline);
}
.signal-node {
  position: relative; min-width: 0; min-height: 224px; padding: 30px 20px 26px;
  border-left: 1px solid var(--hairline);
  transition: background .35s;
}
.signal-node:first-child { border-left: 0; padding-left: 0; }
.signal-node:last-child { padding-right: 0; }
.signal-node::before {
  content: ""; position: absolute; left: 19px; top: -5px; width: 9px; height: 9px; border-radius: 50%;
  background: #6d7cf0; box-shadow: 0 0 0 4px var(--paper), 0 0 16px rgba(109, 124, 240, .55);
}
.signal-node:first-child::before { left: 0; }
.signal-node:hover, .signal-node:focus-visible { background: rgba(255, 255, 255, .5); outline: 0; }
.signal-index { display: block; color: var(--muted); font-size: 12px; line-height: 1.5; letter-spacing: .1em; font-weight: 650; }
.signal-index b { display: block; margin-bottom: 8px; color: #4f7fe7; font-size: 30px; line-height: .9; letter-spacing: -.04em; font-weight: 520; }
.signal-node h3 { margin: 18px 0 10px; color: var(--ink); font-size: 19px; line-height: 1.4; letter-spacing: -.02em; }
.signal-node-primary h3 { font-size: 21px; }
.signal-node p { margin: 0; color: var(--muted); font-size: 13.5px; line-height: 1.75; }
.signal-years { display: flex; align-items: center; gap: 14px; margin: 20px 0 12px; }
.signal-years > div { display: flex; gap: 8px; align-items: end; }
.signal-years strong {
  font-size: 40px; line-height: .8; letter-spacing: -.05em; font-weight: 600;
  background: var(--grad-title); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.signal-years span { color: var(--muted); font-size: 12px; line-height: 1.4; letter-spacing: .04em; }
.signal-years > i { width: 1px; height: 34px; background: rgba(70, 95, 151, .2); }
.signal-node-eight { display: grid; grid-template-columns: 62px 1fr; column-gap: 10px; align-content: start; }
.signal-node-eight .signal-index { grid-column: 1 / -1; }
.signal-eight {
  grid-column: 1; grid-row: 2 / 4; display: flex; align-items: flex-start; margin: 18px 0 0;
  background: var(--grad-title); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.signal-eight strong { font-size: 58px; line-height: .78; letter-spacing: -.08em; }
.signal-eight span { margin: 3px 0 0 4px; font-size: 16px; font-weight: 800; }
.signal-node-eight h3 { grid-column: 2; grid-row: 2; margin: 18px 0 8px; font-size: 17px; }
.signal-node-eight p { grid-column: 1 / -1; grid-row: 4; margin-top: 10px; }

/* ---------- Agenda ---------- */
.agenda { padding: clamp(84px, 9vw, 128px) 0; overflow: hidden; background: rgba(247, 250, 255, .6); }
.agenda-word {
  position: absolute; right: -2vw; top: 12%; z-index: 0; pointer-events: none;
  color: transparent; -webkit-text-stroke: 1px rgba(65, 92, 151, .06);
  font-family: var(--serif); font-size: 15vw; line-height: .8; font-weight: 800; letter-spacing: -.04em;
  will-change: transform;
}
.agenda-header { display: grid; grid-template-columns: 1fr auto; gap: 32px; align-items: end; padding: clamp(44px, 5.5vw, 72px) 0 clamp(32px, 4vw, 48px); }
.agenda-meta { display: grid; gap: 6px; text-align: right; }
.agenda-meta b { font-size: 18px; font-weight: 800; color: var(--ink); font-variant-numeric: tabular-nums; }
.agenda-meta span { color: var(--muted); font-size: 13px; }
.agenda-tabs { display: grid; grid-template-columns: repeat(3, 1fr); border-bottom: 1px solid var(--hairline); }
.agenda-tabs button {
  position: relative; height: 62px; border: 0; color: var(--muted); background: transparent;
  cursor: pointer; font-size: 14.5px; font-weight: 650; transition: color .3s;
}
.agenda-tabs button span { margin-right: 12px; color: var(--violet); font-size: 12px; font-weight: 700; }
.agenda-tabs button::after {
  content: ""; position: absolute; left: 26%; right: 74%; bottom: -1px; height: 2px;
  background: var(--grad-cta); transition: right .4s var(--ease), left .4s var(--ease);
}
.agenda-tabs button:hover { color: var(--ink); }
.agenda-tabs button.active { color: var(--ink); }
.agenda-tabs button.active::after { left: 26%; right: 26%; }
.agenda-panels { min-height: 480px; }
.agenda-panel { display: none; }
.agenda-panel.active { display: block; animation: panelIn .55s var(--ease); }
@keyframes panelIn { from { opacity: 0; transform: translateY(14px); } }
.agenda-panel article {
  position: relative; display: grid; grid-template-columns: 118px 22px minmax(0, 1fr) auto; gap: 28px; align-items: center;
  min-height: 116px; padding: 20px 8px 20px 0; border-bottom: 1px solid rgba(59, 85, 142, .12);
  transition: padding-left .4s var(--ease), background .3s;
}
.agenda-panel article:hover { padding-left: 16px; background: rgba(255, 255, 255, .5); }
.agenda-panel article time { font-size: 24px; letter-spacing: -.02em; color: var(--ink); font-weight: 800; font-variant-numeric: tabular-nums; }
.agenda-dot { position: relative; width: 11px; height: 11px; border: 2px solid var(--paper-3); border-radius: 50%; background: var(--violet); box-shadow: 0 0 0 1px var(--violet), 0 0 12px rgba(123, 108, 240, .5); }
.agenda-dot::after { content: ""; position: absolute; left: 4px; top: 14px; width: 1px; height: 104px; border-left: 1px dashed var(--line-2); }
.agenda-panel article:last-child .agenda-dot::after { display: none; }
.agenda-panel small { color: var(--cyan-deep); font-size: 11px; letter-spacing: .14em; font-weight: 700; }
.agenda-panel h3 { margin: 6px 0 5px; font-size: 19px; font-weight: 800; color: var(--ink); }
.agenda-panel p { margin: 0; color: var(--muted); font-size: 13.5px; line-height: 1.7; }
.agenda-panel article > b { color: rgba(13, 27, 52, .08); font-family: var(--serif); font-size: 42px; font-weight: 800; }
.agenda-note { margin: 18px 0 0; color: var(--faint); font-size: 13px; text-align: right; }

/* ---------- Guests ---------- */
.guests { padding: clamp(84px, 9vw, 128px) 0; overflow: hidden; background: linear-gradient(180deg, rgba(238, 245, 253, .65), rgba(244, 248, 255, .4)); }
.guest-intro { display: grid; grid-template-columns: 1fr auto; gap: 32px; align-items: end; padding: clamp(44px, 5.5vw, 72px) 0 clamp(36px, 4.5vw, 60px); }
.guest-status { display: flex; align-items: center; gap: 12px; color: var(--muted); font-size: 13px; line-height: 1.6; }
.guest-status i { width: 8px; height: 8px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 14px rgba(31, 183, 232, .7); animation: pulse 1.8s infinite; flex-shrink: 0; }
.guest-status small { color: var(--faint); font-size: 12px; }

.guest-showcase { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: clamp(36px, 4vw, 56px) clamp(16px, 1.8vw, 28px); }
.home-guest-card { position: relative; min-width: 0; text-align: center; }
.home-guest-card figure {
  position: relative; width: min(100%, 152px); aspect-ratio: 1; margin: 0 auto; overflow: hidden;
  border: 4px solid rgba(255, 255, 255, .88); border-radius: 50%;
  background: linear-gradient(145deg, #e9f2ff, #f8fbff);
  box-shadow: 0 18px 42px rgba(55, 82, 143, .15), 0 0 0 1px rgba(91, 114, 170, .13);
  transition: box-shadow .4s;
}
.home-guest-card figure::after {
  content: ""; position: absolute; inset: 0; pointer-events: none; border-radius: 50%;
  background: linear-gradient(150deg, rgba(255, 255, 255, .18), transparent 48%, rgba(57, 89, 158, .12));
}
.home-guest-card:hover figure { box-shadow: 0 24px 54px rgba(55, 82, 143, .22), 0 0 0 1px rgba(123, 108, 240, .3); }
.home-guest-card img {
  width: 100%; height: 100%; display: block; object-fit: cover; object-position: 50% 24%;
  filter: saturate(.85) contrast(.98); transition: transform .7s var(--ease), filter .5s ease;
}
.home-guest-card:hover img { transform: scale(1.04); filter: saturate(.98) contrast(1); }
.home-guest-card > div { position: relative; padding-top: 16px; }
.home-guest-card small {
  display: -webkit-box; overflow: hidden; min-height: 32px; color: var(--faint); font-size: 11px;
  line-height: 1.45; letter-spacing: .08em; -webkit-box-orient: vertical; -webkit-line-clamp: 2;
}
.home-guest-card h3 { margin: 8px 0 7px; color: var(--ink); font-family: var(--serif); font-size: 22px; line-height: 1.15; letter-spacing: -.03em; }
.home-guest-card p { margin: 0; min-height: 44px; color: var(--muted); font-size: 12.5px; line-height: 1.7; }

/* Committee groups */
.committee-group { margin-top: clamp(40px, 5vw, 60px); }
.guest-intro + .committee-group { margin-top: 0; }
.committee-label { display: flex; align-items: baseline; gap: 14px; margin-bottom: clamp(24px, 3vw, 34px); padding-bottom: 14px; border-bottom: 1px solid var(--hairline); }
.committee-label span { font-family: var(--serif); font-size: clamp(18px, 1.7vw, 22px); font-weight: 800; color: var(--ink); letter-spacing: .04em; }
.committee-label i { font-style: normal; color: var(--faint); font-size: 11px; letter-spacing: .16em; }
.guest-mono span {
  display: grid; place-items: center; width: 100%; height: 100%;
  font-family: var(--serif); font-size: clamp(34px, 3.4vw, 46px); font-weight: 700; color: #fff;
  background: var(--grad-cta);
}
.guest-directory-cta {
  display: flex; align-items: center; justify-content: space-between; gap: 36px;
  margin-top: clamp(56px, 7vw, 88px); padding: 28px 0; border-block: 1px solid var(--hairline);
}
.guest-directory-cta span { color: var(--muted); font-size: 12px; letter-spacing: .14em; font-weight: 700; }
.guest-directory-cta h3 { margin: 8px 0 4px; color: var(--ink); font-family: var(--serif); font-size: clamp(22px, 2.2vw, 28px); line-height: 1.2; }
.guest-directory-cta p { margin: 0; color: var(--muted); font-size: 13.5px; line-height: 1.7; }
.guest-directory-cta .btn { flex-shrink: 0; }
.guest-directory-cta .btn b { margin-left: 12px; }

/* ---------- Competition ---------- */
.competition { padding: clamp(84px, 9vw, 128px) 0; background: rgba(247, 250, 255, .6); }
.competition-grid { display: grid; grid-template-columns: .9fr 1fr; gap: clamp(48px, 7vw, 120px); padding: clamp(48px, 6vw, 76px) 0 clamp(36px, 5vw, 58px); align-items: center; }
.competition-copy h2 { margin: 22px 0; font-size: clamp(32px, 3.8vw, 58px); line-height: 1.16; letter-spacing: -.045em; font-weight: 850; color: var(--ink); text-wrap: balance; }
.competition-copy p { max-width: 520px; margin: 0 0 34px; color: var(--muted); font-size: 14.5px; line-height: 2; }
.competition-copy .btn { min-width: 180px; }
.competition-numbers { position: relative; }
.competition-numbers article { position: relative; display: grid; grid-template-columns: 40px minmax(0, 1fr); gap: 24px; align-items: center; min-height: 108px; border-bottom: 1px solid rgba(60, 87, 147, .13); }
.competition-numbers article:first-child { border-top: 1px solid rgba(60, 87, 147, .13); }
.competition-numbers article > span {
  position: relative; z-index: 2; width: 30px; height: 30px; display: grid; place-items: center;
  color: var(--surface); border-radius: 50%; background: var(--grad-cta); font-size: 11px; font-weight: 700;
  box-shadow: 0 6px 16px rgba(111, 139, 242, .4);
}
.competition-numbers strong { font-size: clamp(34px, 3.6vw, 52px); font-weight: 850; letter-spacing: -.04em; color: var(--ink); font-variant-numeric: tabular-nums; }
.competition-numbers sup { background: var(--grad-title); -webkit-background-clip: text; background-clip: text; color: transparent; font-size: .5em; }
.competition-numbers p { margin: 2px 0 0; color: var(--muted); font-size: 13px; }
.number-track { position: absolute; left: 14px; top: 54px; bottom: 54px; width: 2px; background: rgba(123, 108, 240, .15); border-radius: 2px; }
.number-track i { display: block; width: 2px; height: 25%; background: linear-gradient(180deg, var(--cyan), var(--violet)); box-shadow: 0 0 12px rgba(123, 108, 240, .5); animation: trackMove 3.6s ease-in-out infinite alternate; }
@keyframes trackMove { to { transform: translateY(300%); } }
.competition-art { position: relative; margin: 0 0 22px; overflow: hidden; border-radius: 22px; border: 1px solid rgba(13, 27, 52, .1); box-shadow: 0 26px 70px rgba(66, 92, 150, .12); }
.competition-art img { width: 100%; height: clamp(240px, 32vw, 400px); object-fit: cover; object-position: 50% 54%; display: block; transition: transform 6s var(--ease); }
.competition-art:hover img { transform: scale(1.04); }
.competition-benefits {
  min-height: 84px; display: flex; justify-content: space-between; align-items: center; gap: 18px;
  padding: 0 8px; border-block: 1px solid var(--hairline); color: var(--text); font-size: 13.5px; font-weight: 650;
}
.competition-benefits i { width: 5px; height: 5px; border-radius: 50%; background: var(--grad-cta); flex-shrink: 0; }

/* ---------- History ---------- */
.history { padding: clamp(84px, 9vw, 128px) 0 clamp(88px, 10vw, 140px); background: linear-gradient(180deg, rgba(238, 245, 253, .6), rgba(244, 248, 255, .4)); }
.history-heading { display: grid; grid-template-columns: 1.4fr .6fr; gap: clamp(32px, 6vw, 100px); align-items: end; padding: clamp(44px, 5.5vw, 72px) 0 clamp(48px, 6vw, 80px); }
.history-heading p { margin: 0; color: var(--muted); font-size: 14px; line-height: 2; }
.history-track { position: relative; display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); grid-template-rows: auto auto; gap: 0 clamp(14px, 1.6vw, 26px); padding: 8px 0; }
.history-line { position: absolute; left: 0; right: 0; top: 50%; height: 2px; margin-top: -1px; background-image: linear-gradient(90deg, rgba(13, 27, 52, .26) 45%, transparent 45%); background-size: 14px 2px; background-repeat: repeat-x; }
.history-line i { display: block; width: 100%; height: 2px; background: linear-gradient(90deg, var(--cyan), var(--violet), var(--magenta)); transform: scaleX(0); transform-origin: left; transition: transform 2.2s var(--ease) .3s; }
.history-track.in-view .history-line i { transform: scaleX(1); }
.history-track article { position: relative; min-width: 0; }
.history-track article:nth-of-type(odd) { grid-row: 1; align-self: end; padding-bottom: 34px; }
.history-track article:nth-of-type(even) { grid-row: 2; align-self: start; padding-top: 34px; }
.history-track article:nth-of-type(1) { grid-column: 1; } .history-track article:nth-of-type(2) { grid-column: 2; }
.history-track article:nth-of-type(3) { grid-column: 3; } .history-track article:nth-of-type(4) { grid-column: 4; }
.history-track article:nth-of-type(5) { grid-column: 5; } .history-track article:nth-of-type(6) { grid-column: 6; }
.history-track article > span {
  position: absolute; left: 50%; z-index: 2; width: 13px; height: 13px; transform: translateX(-50%);
  border: 3px solid var(--paper); border-radius: 50%; background: var(--violet);
  box-shadow: 0 0 0 1px var(--violet), 0 0 14px rgba(123, 108, 240, .55);
}
.history-track article:nth-of-type(odd) > span { bottom: -7px; }
.history-track article:nth-of-type(even) > span { top: -7px; }
.history-card { display: grid; gap: 5px; padding: 4px 2px; text-align: left; }
.history-card time { color: var(--muted); font-size: 12.5px; letter-spacing: .06em; font-weight: 700; font-variant-numeric: tabular-nums; }
.history-card small { color: var(--faint); font-size: 12px; }
.history-card h3 { margin: 8px 0 0; font-size: 17.5px; line-height: 1.45; font-weight: 800; color: var(--ink); }
.history-card p { margin: 7px 0 0; color: var(--muted); font-size: 12.5px; line-height: 1.65; }
.history-track article.future .history-card { border-top: 2px solid var(--violet); padding-top: 14px; }
.history-track article.future time { color: #5d61d9; }
.history-track article.future > span { background: var(--magenta); box-shadow: 0 0 0 1px var(--magenta), 0 0 16px rgba(255, 95, 158, .6); }

/* ---------- Organizers ---------- */
.organizers { padding: 0 0 clamp(84px, 9vw, 120px); background: rgba(244, 248, 255, .4); }
.organizers-head { display: grid; grid-template-columns: 1fr .5fr; gap: clamp(32px, 6vw, 90px); align-items: end; padding: clamp(44px, 5.5vw, 64px) 0 clamp(32px, 4vw, 48px); border-top: 1px dashed var(--line-2); }
.organizers-head span { background: var(--grad-title); -webkit-background-clip: text; background-clip: text; color: transparent; font-size: 13px; letter-spacing: .16em; font-weight: 800; }
.organizers-head h2 { margin: 14px 0 0; font-size: clamp(26px, 2.8vw, 37px); line-height: 1.28; letter-spacing: -.03em; font-weight: 850; color: var(--ink); }
.organizers-head p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.8; }
.org-groups { border-top: 1px solid var(--hairline); }
.org-group { display: grid; grid-template-columns: 160px minmax(0, 1fr); gap: 30px; align-items: center; min-height: 118px; padding: 24px 0; border-bottom: 1px solid var(--hairline); }
.org-label { display: flex; align-items: center; gap: 14px; color: var(--muted); }
.org-label small { min-width: 28px; color: var(--faint); font-size: 12px; letter-spacing: .1em; }
.org-label span { font-size: 14px; font-weight: 700; letter-spacing: .08em; }
.org-wall { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 12px; min-width: 0; }
.org-plate {
  position: relative; display: flex; align-items: center; justify-content: center; gap: 12px;
  min-height: 86px; padding: 14px 22px; overflow: hidden;
  background: rgba(255, 255, 255, .74); border: 1px solid rgba(60, 85, 137, .14); border-radius: 16px;
  transition: transform .35s var(--ease), border-color .3s, box-shadow .35s;
}
.org-plate:hover { transform: translateY(-3px); border-color: rgba(31, 183, 232, .45); box-shadow: 0 16px 40px rgba(65, 90, 150, .12); }
.org-plate img { display: block; width: auto; height: auto; max-height: 40px; max-width: 84%; object-fit: contain; }
.org-plate .org-img-rwari { max-height: 44px; }
.org-plate .org-img-xiaoyao { max-height: 46px; }
.org-plate .org-img-seeyon { max-height: 46px; }
.org-plate .org-img-flc { max-height: 40px; }
.org-plate .org-img-opcbook, .org-plate .org-img-opctalk { max-height: 30px; }
.org-plate .org-img-jianchi { max-height: 42px; }
.org-plate .org-img-alliance { max-height: 46px; }
.org-plate .org-img-guanhuo { max-height: 60px; }
.org-plate .org-img-huoxun { max-height: 56px; }
.org-plate .org-img-bnews { max-height: 48px; }
.org-plate .org-img-newsfi { max-height: 48px; }
.org-plate .org-img-chaochuangzhe { max-height: 52px; }
.org-wall:has(> .org-plate:only-child) { grid-template-columns: minmax(220px, 460px); }
.org-plate-name { display: grid; gap: 3px; color: var(--ink); font-size: 20px; line-height: 1; letter-spacing: .08em; }
.org-plate-name small { color: var(--muted); font-size: 11px; letter-spacing: .12em; font-weight: 500; }
.org-plate-text { justify-content: flex-start; }
.org-plate-text i { flex: 0 0 auto; width: 8px; height: 8px; border-radius: 2px; background: var(--grad-cta); box-shadow: 0 0 10px rgba(111, 139, 242, .5); }
.org-plate-text b { color: var(--ink); font-family: var(--serif); font-size: 16.5px; line-height: 1.55; letter-spacing: .02em; font-weight: 700; }

/* ---------- Final CTA ---------- */
.final-cta {
  position: relative; min-height: 640px; display: grid; overflow: hidden; color: var(--ink);
  background:
    radial-gradient(circle at 80% 30%, rgba(255, 224, 168, .24) 0%, rgba(123, 108, 240, .14) 12%, rgba(31, 183, 232, .08) 26%, transparent 46%),
    radial-gradient(circle at 78% 48%, rgba(255, 255, 255, .96) 0%, rgba(228, 239, 255, .82) 24%, rgba(224, 235, 255, .24) 48%, transparent 68%),
    linear-gradient(115deg, #eef6ff 0%, #eaf3ff 48%, #e9f0ff 100%);
}
.final-cta-aurora { position: absolute; inset: 0; pointer-events: none; }
.final-cta-aurora i { position: absolute; border-radius: 50%; filter: blur(60px); will-change: transform; }
.final-cta-aurora i:nth-child(1) {
  width: 40vw; height: 40vw; right: 2vw; top: -14vw; opacity: .5;
  background: radial-gradient(circle, rgba(255, 210, 122, .4), transparent 66%);
  animation: auroraDrift1 26s ease-in-out infinite alternate;
}
.final-cta-aurora i:nth-child(2) {
  width: 34vw; height: 34vw; left: -10vw; bottom: -16vw; opacity: .4;
  background: radial-gradient(circle, rgba(123, 108, 240, .34), transparent 66%);
  animation: auroraDrift2 34s ease-in-out infinite alternate;
}
.final-cta-art { position: absolute; right: 0; top: 50%; z-index: 1; height: calc(100% - 40px); transform: translateY(-50%); pointer-events: none; }
.final-cta-art img {
  width: auto; height: 100%; object-fit: contain; display: block;
  filter: saturate(.86) brightness(1.04) drop-shadow(0 22px 46px rgba(94, 120, 214, .14));
  animation: beingFloat 7s ease-in-out infinite alternate;
}
@keyframes beingFloat { to { transform: translateY(-16px); } }
.final-word {
  position: absolute; right: -2vw; bottom: -7%; color: transparent; pointer-events: none;
  -webkit-text-stroke: 1px rgba(67, 91, 145, .13); font-family: var(--serif);
  font-size: 24vw; line-height: .8; font-weight: 900; letter-spacing: -.04em; will-change: transform;
}
.final-sparks i {
  position: absolute; width: 6px; height: 6px; border-radius: 50%;
  background: var(--gold-soft); box-shadow: 0 0 16px rgba(255, 210, 122, .9);
  animation: sparkFloat 5s ease-in-out infinite;
}
.final-sparks i:nth-child(1) { left: 12%; top: 22%; }
.final-sparks i:nth-child(2) { left: 24%; top: 66%; animation-delay: .7s; width: 4px; height: 4px; }
.final-sparks i:nth-child(3) { left: 38%; top: 34%; animation-delay: 1.3s; width: 5px; height: 5px; }
.final-sparks i:nth-child(4) { left: 52%; top: 76%; animation-delay: 2s; }
.final-sparks i:nth-child(5) { left: 66%; top: 18%; animation-delay: 2.5s; width: 4px; height: 4px; }
.final-sparks i:nth-child(6) { left: 78%; top: 58%; animation-delay: 3.1s; width: 5px; height: 5px; }
.final-sparks i:nth-child(7) { left: 88%; top: 30%; animation-delay: 3.7s; }
.final-sparks i:nth-child(8) { left: 8%; top: 80%; animation-delay: 4.2s; width: 4px; height: 4px; }
@keyframes sparkFloat { 0%, 100% { transform: translateY(0); opacity: .85; } 50% { transform: translateY(-34px); opacity: .35; } }
.final-cta-content { position: relative; z-index: 2; display: grid; align-content: center; padding: clamp(72px, 9vw, 110px) 0; }
.final-cta-content > * { width: min(700px, 56vw); }
.final-cta .micro-label { -webkit-text-fill-color: #60708d; color: #60708d; }
.final-cta h2 { margin: 24px 0 16px; width: min(880px, 68vw); max-width: none; color: var(--ink); font-size: clamp(34px, 4.6vw, 72px); line-height: 1.16; letter-spacing: -.045em; font-weight: 850; text-shadow: 0 3px 22px rgba(238, 246, 255, .98); }
.final-cta h2 .line-inner { white-space: nowrap; }
.final-cta h2 em { font-style: normal; }
.final-cta p { margin: 0; color: var(--muted); font-size: 13.5px; letter-spacing: .14em; }
.final-chips { display: flex; align-items: center; gap: 14px; margin-top: 24px; color: var(--muted); font-size: 13px; font-weight: 600; }
.final-chips i { width: 5px; height: 5px; border-radius: 50%; background: var(--gold); flex-shrink: 0; }
.final-actions { display: flex; gap: 14px; margin-top: 32px; }
.final-actions .btn { min-height: 56px; padding: 0 32px; }
.final-contact-link {
  display: inline-flex; width: auto; justify-self: start; margin-top: 34px; padding: 0 0 4px;
  color: var(--muted); font-size: 13px; border: 0; border-bottom: 1px dashed rgba(13, 27, 52, .3);
  background: transparent; cursor: pointer; transition: color .3s, border-color .3s;
}
.final-contact-link:hover { color: var(--ink); border-bottom-color: var(--ink); }

/* ---------- Footer ---------- */
.site-footer { position: relative; z-index: 1; padding: clamp(44px, 5vw, 60px) 0 28px; color: var(--text); background: var(--paper-3); border-top: 1px solid var(--line); }
.footer-top { display: grid; grid-template-columns: .8fr 1.1fr .7fr; gap: clamp(28px, 4vw, 56px); align-items: center; padding-bottom: clamp(32px, 4vw, 44px); }
.footer-top > p { margin: 0; color: var(--muted); font-size: 13.5px; line-height: 1.85; }
.footer-contact { display: grid; gap: 8px; text-align: right; }
.footer-contact span { color: var(--muted); font-size: 12px; letter-spacing: .12em; }
.footer-contact button { justify-self: end; padding: 0; border: 0; color: var(--ink); background: transparent; cursor: pointer; font-size: 14px; font-weight: 650; transition: color .25s; }
.footer-contact button:hover { color: var(--violet); }
.footer-bottom { display: flex; justify-content: space-between; gap: 24px; padding-top: 22px; border-top: 1px dashed var(--line-2); color: var(--faint); font-size: 12.5px; }

/* ---------- Modal ---------- */
.modal { position: fixed; inset: 0; z-index: 1000; display: grid; place-items: center; padding: 20px; visibility: hidden; opacity: 0; transition: opacity .35s, visibility .35s; }
.modal.is-open { visibility: visible; opacity: 1; }
.modal-backdrop { position: absolute; inset: 0; background: rgba(13, 27, 52, .48); -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px); }
.modal-panel {
  position: relative; width: min(660px, 100%); max-height: min(860px, calc(100svh - 40px)); overflow-y: auto;
  padding: clamp(30px, 4.5vw, 52px); color: var(--text); background: var(--surface);
  border: 1px solid var(--line); border-radius: 26px; box-shadow: var(--shadow-float);
  transform: translateY(28px) scale(.98); transition: transform .45s var(--ease);
}
.modal.is-open .modal-panel { transform: none; }
.modal-close { position: absolute; right: 16px; top: 12px; z-index: 3; width: 40px; height: 40px; border: 0; background: transparent; color: var(--muted); font-size: 30px; font-weight: 200; cursor: pointer; transition: color .25s, transform .3s var(--ease); }
.modal-close:hover { color: var(--ink); transform: rotate(90deg); }
.modal-kicker { background: var(--grad-title); -webkit-background-clip: text; background-clip: text; color: transparent; font-size: 12px; font-weight: 800; letter-spacing: .16em; }
.modal h2 { margin: 14px 0 8px; font-size: clamp(28px, 3vw, 38px); letter-spacing: -.04em; color: var(--ink); font-weight: 850; }
.modal-desc { margin: 0 0 26px; color: var(--muted); font-size: 13.5px; }
.apply-types { display: grid; grid-template-columns: repeat(3, 1fr); margin-bottom: 26px; border: 1px solid var(--line-2); border-radius: 14px; overflow: hidden; }
.apply-types button { min-height: 48px; border: 0; border-right: 1px solid var(--line-2); color: var(--muted); background: transparent; cursor: pointer; font-size: 13.5px; transition: background .25s, color .25s; }
.apply-types button:last-child { border-right: 0; }
.apply-types button.active { color: var(--surface); background: var(--ink); }
#applyForm { display: grid; gap: 18px; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
#applyForm label:not(.consent) { display: grid; gap: 8px; }
#applyForm label > span { color: var(--muted); font-size: 13px; }
#applyForm input, #applyForm textarea {
  width: 100%; border: 0; border-bottom: 1px solid var(--line-2); padding: 11px 0; outline: 0;
  border-radius: 0; background: transparent; resize: vertical; font-size: 15px; transition: border-color .3s;
}
#applyForm input:focus, #applyForm textarea:focus { border-color: var(--cyan); }
.consent { display: flex; align-items: flex-start; gap: 9px; cursor: pointer; }
.consent input { width: auto !important; margin-top: 3px; accent-color: var(--violet); }
.consent span { line-height: 1.55; font-size: 13px; }
.form-submit { margin-top: 4px; min-height: 54px; }
.demo-tip { color: var(--faint); font-size: 12.5px; text-align: center; }
.success-step { min-height: 480px; display: none; place-content: center; justify-items: center; text-align: center; }
.success-step.is-active { display: grid; }
.form-step.is-hidden { display: none; }
.success-step p { max-width: 420px; margin: 0 auto 28px; color: var(--muted); font-size: 13.5px; line-height: 1.85; }
.success-orbit { position: relative; width: 124px; height: 124px; display: grid; place-items: center; margin: 0 auto 30px; }
.success-orbit i { position: absolute; inset: 0; border: 1px solid rgba(31, 183, 232, .5); border-radius: 50%; animation: orbitSpin 9s linear infinite; }
.success-orbit i:nth-child(2) { inset: 17px; border-color: rgba(123, 108, 240, .5); animation-direction: reverse; }
@keyframes orbitSpin { to { transform: rotate(360deg); } }
.success-orbit span { position: relative; z-index: 2; width: 54px; height: 54px; display: grid; place-items: center; border-radius: 50%; color: var(--surface); background: var(--grad-cta); font-size: 24px; }

/* ---------- Reveal system ---------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .9s var(--ease), transform .9s var(--ease); }
.reveal.in-view { opacity: 1; transform: none; }
[data-stagger] > * { opacity: 0; transform: translateY(26px); transition: opacity .85s var(--ease), transform .85s var(--ease); }
[data-stagger].in-view > * { opacity: 1; transform: none; }
[data-stagger].in-view > *:nth-child(1) { transition-delay: .02s; }
[data-stagger].in-view > *:nth-child(2) { transition-delay: .09s; }
[data-stagger].in-view > *:nth-child(3) { transition-delay: .16s; }
[data-stagger].in-view > *:nth-child(4) { transition-delay: .23s; }
[data-stagger].in-view > *:nth-child(5) { transition-delay: .3s; }
[data-stagger].in-view > *:nth-child(6) { transition-delay: .37s; }
[data-stagger].in-view > *:nth-child(7) { transition-delay: .44s; }
[data-stagger].in-view > *:nth-child(8) { transition-delay: .51s; }
[data-stagger].in-view > *:nth-child(9) { transition-delay: .58s; }
[data-stagger].in-view > *:nth-child(10) { transition-delay: .65s; }
[data-stagger].in-view > *:nth-child(11) { transition-delay: .72s; }
[data-stagger].in-view > *:nth-child(12) { transition-delay: .79s; }

/* ============================================================
   Responsive — Pad (≤1080px)
   ============================================================ */
@media (max-width: 1080px) {
  :root { --gutter: 24px; --header-h: 72px; }
  .desktop-nav { display: none; }
  .menu-toggle { display: block; }
  .mobile-menu { display: block; }
  .header-actions { margin-left: auto; }

  /* Hero: single flowing column, card in flow */
  .hero { min-height: 0; }
  .hero-bg { inset: 0; background-position: 68% 26%; }
  .hero-veil { background:
    linear-gradient(180deg, rgba(246, 250, 255, .9) 0%, rgba(246, 250, 255, .62) 34%, rgba(246, 250, 255, .3) 58%, rgba(244, 248, 255, .86) 100%),
    linear-gradient(90deg, rgba(246, 250, 255, .8) 0%, rgba(246, 250, 255, .2) 60%, transparent 100%);
  }
  .hero-inner { grid-template-columns: 1fr; min-height: 0; padding: calc(var(--header-h) + 56px) 0 72px; }
  .hero-copy { max-width: 620px; }
  .hero-title .line-inner { font-size: clamp(52px, 7.6vw, 84px); }
  .hero-title .line-accent .line-inner { margin-left: clamp(26px, 4vw, 52px); }
  .hero-info-card {
    position: relative; right: auto; bottom: auto; width: min(560px, 100%);
    margin-top: 44px; background: rgba(250, 252, 255, .72);
  }

  /* Manifesto */
  .manifesto-narrative { grid-template-columns: 1fr; gap: 44px; }
  .manifesto-quote { align-self: start; max-width: 560px; }
  .quote-mark { top: -46px; }
  .stats { grid-template-columns: 1fr 1fr; }
  .stat:nth-child(odd) { border-left: 0; }
  .stat:nth-child(n+3) { border-top: 1px solid var(--hairline); }

  /* Highlights: art becomes a full-bleed strip via display:contents reordering */
  .highlights { display: flex; flex-direction: column; }
  .highlights-stage { display: contents; }
  .highlights .section-head { order: 1; width: min(var(--container), calc(100% - var(--gutter) * 2)); margin-inline: auto; }
  .signal-intro { order: 2; width: min(var(--container), calc(100% - var(--gutter) * 2)); margin-inline: auto; }
  .signal-river-art {
    order: 3; position: relative; top: auto; right: auto; width: 100%;
    height: clamp(280px, 40vw, 420px); margin-top: 44px; opacity: .95;
    -webkit-mask-image: linear-gradient(180deg, transparent 0%, #000 16%, #000 84%, transparent 100%);
    mask-image: linear-gradient(180deg, transparent 0%, #000 16%, #000 84%, transparent 100%);
  }
  .signal-river-art img { object-position: 68% 46%; }
  .signal-map {
    order: 4; width: min(var(--container), calc(100% - var(--gutter) * 2)); margin-inline: auto;
    margin-top: 48px; grid-template-columns: repeat(3, 1fr); border-bottom: 0;
  }
  .signal-node { min-height: 200px; padding: 26px 18px 24px; border-left: 1px solid var(--hairline); }
  .signal-node:nth-child(-n+3)::before { top: -5px; }
  .signal-node-years { grid-column: 1 / 3; border-left: 0; padding-left: 0; border-top: 1px solid var(--hairline); }
  .signal-node-years::before { left: 0; top: -5px; }
  .signal-node-eight { border-top: 1px solid var(--hairline); }
  .signal-node-eight::before { top: -5px; }

  /* Guests */
  .guest-showcase { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 44px 20px; }
  .home-guest-card figure { width: min(100%, 132px); }

  /* Competition */
  .competition-grid { grid-template-columns: 1fr; gap: 52px; }
  .competition-copy p { max-width: 640px; }

  /* History: vertical rail */
  .history-track { display: block; padding-left: 0; }
  .history-line { left: 7px; right: auto; top: 12px; bottom: 12px; width: 2px; height: auto; margin: 0; background-image: linear-gradient(180deg, rgba(13, 27, 52, .26) 45%, transparent 45%); background-size: 2px 14px; background-repeat: repeat-y; }
  .history-line i { width: 2px; height: 100%; transform: scaleY(0); transform-origin: top; background: linear-gradient(180deg, var(--cyan), var(--violet), var(--magenta)); }
  .history-track article, .history-track article:nth-of-type(odd), .history-track article:nth-of-type(even) { position: relative; padding: 0 0 34px 40px; }
  .history-track article:last-child { padding-bottom: 4px; }
  .history-track article > span, .history-track article:nth-of-type(odd) > span, .history-track article:nth-of-type(even) > span { left: 1px; top: 6px; bottom: auto; transform: none; }
  .history-track article.future .history-card { border-top: 0; border-left: 2px solid var(--violet); padding: 4px 0 4px 16px; }
  .history-card h3 { font-size: 19px; }

  /* Final CTA */
  .final-cta { min-height: 600px; }
  .final-cta-content > * { width: min(620px, 64vw); }
  .final-cta h2 { width: min(620px, 72vw); }
  .final-cta-art { height: 78%; right: -6%; opacity: .6; }
  .final-word { font-size: 30vw; }

  /* Footer */
  .footer-top { grid-template-columns: 1fr; gap: 26px; }
  .footer-contact { text-align: left; }
  .footer-contact button { justify-self: start; }
}

/* ============================================================
   Responsive — Phone (≤760px)
   ============================================================ */
@media (max-width: 760px) {
  :root { --gutter: 20px; --header-h: 64px; }
  .brand-logo { width: 126px; }
  .btn-nav { display: none; }
  .cursor-light { display: none; }

  /* Hero */
  .hero-bg { background-image: url("assets/hero-life-mobile-v2.png"); background-position: 50% 12%; background-size: cover; animation: none; }
  .hero-aurora i:nth-child(1) { width: 80vw; height: 80vw; opacity: .24; }
  .hero-aurora i:nth-child(2) { width: 70vw; height: 70vw; opacity: .2; }
  .hero-veil { background:
    linear-gradient(180deg, rgba(246, 250, 255, .82) 0%, rgba(246, 250, 255, .5) 26%, rgba(246, 250, 255, .12) 46%, rgba(246, 250, 255, .08) 66%, rgba(244, 248, 255, .9) 100%);
  }
  #sparkCanvas { opacity: .42; }
  .hero-inner { display: flex; flex-direction: column; min-height: 100svh; padding: calc(var(--header-h) + 68px) 0 46px; }
  .hero-copy { flex: 0 0 auto; margin-bottom: 36px; }
  .hero-kicker { flex-wrap: wrap; gap: 8px 12px; margin-bottom: 22px; font-size: 11px; letter-spacing: .14em; white-space: normal; }
  .hero-kicker i { width: 40px; }
  .hero-title { letter-spacing: -.045em; }
  .hero-title .line-inner { font-size: clamp(46px, 14vw, 62px); }
  .hero-title .line-accent .line-inner { margin-left: 22px; }
  .hero-identity { max-width: none; margin-top: 26px; padding: 0; }
  .hero-event-name { font-size: 15px; line-height: 1.65; }
  .hero-event-sub { font-size: 12px; letter-spacing: .08em; margin-top: 8px; }
  .hero-cta { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 34px; }
  .hero-cta .btn, .hero-partner-link { width: 100%; min-width: 0; min-height: 52px; padding: 0 12px; justify-content: center; gap: 10px; border-radius: 999px; font-size: 13.5px; }
  .hero-partner-link { border: 1px solid rgba(13, 27, 52, .24); background: rgba(255, 255, 255, .44); -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px); }
  .hero-audience { display: none; }
  .hero-info-card { margin-top: auto; padding: 18px 18px 16px; border-radius: 20px; width: 100%; }
  .hero-info-card::before { border-radius: 14px; }
  .hero-info-item strong { font-size: 16.5px; }
  .hero-info-item small { font-size: 11.5px; }
  .hero-info-countdown { gap: 8px; }
  .countdown { gap: 7px; }
  .countdown strong { font-size: 20px; }
  .countdown small { font-size: 9px; letter-spacing: .08em; }
  .countdown > i { font-size: 13px; }
  .hero-scroll-cue { display: none; }

  /* Marquee */
  .marquee-track { gap: 22px; animation-duration: 28s; }
  .marquee-track span { font-size: 24px; }

  /* Section head */
  .section-head { padding-bottom: 16px; gap: 14px; }
  .eyebrow { font-size: 11.5px; letter-spacing: .13em; white-space: normal; flex-shrink: 1; min-width: 0; line-height: 1.55; }
  .chapter-no { font-size: 40px; flex-shrink: 0; }
  .display-heading { font-size: clamp(26px, 7.4vw, 32px); }

  /* Manifesto */
  .manifesto-thesis h2 { font-size: clamp(26px, 7.2vw, 34px); line-height: 1.3; }
  .manifesto-copy p { font-size: 14px; line-height: 1.9; margin-bottom: 16px; }
  .quote-mark { font-size: 64px; top: -38px; }
  .manifesto-quote p { font-size: clamp(26px, 7.6vw, 34px); }
  .stats { margin-top: 48px; }
  .stat { min-height: 128px; padding: 20px 8px 22px; }
  .stat strong { font-size: 34px; }
  .stat b { font-size: 18px; }
  .stat p { font-size: 12px; }

  /* Highlights */
  .signal-intro { padding-top: 36px; }
  .signal-intro > p { font-size: 14px; line-height: 1.85; margin-top: 20px; }
  .signal-river-art { height: 230px; margin-top: 34px; }
  .signal-map {
    display: flex; gap: 12px; margin-top: 34px; margin-inline: auto; padding: 6px 0 20px;
    width: calc(100% - var(--gutter) * 2); overflow-x: auto; border-top: 0;
    scroll-snap-type: x mandatory; scroll-padding-inline: 0; scrollbar-width: none; -webkit-overflow-scrolling: touch;
    overscroll-behavior-inline: contain;
  }
  .signal-map::-webkit-scrollbar { display: none; }
  .signal-node,
  .signal-node-years,
  .signal-node-eight {
    flex: 0 0 min(80vw, 320px); min-height: 0; padding: 22px 20px 24px;
    border: 1px solid rgba(64, 91, 150, .15) !important; border-radius: 20px;
    background: rgba(250, 252, 255, .85); box-shadow: 0 16px 40px rgba(65, 90, 150, .1);
    -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px);
    scroll-snap-align: start;
  }
  .signal-node:first-child { padding-left: 20px; }
  .signal-node::before, .signal-node-years::before, .signal-node-eight::before { left: 20px; top: -5px; box-shadow: 0 0 0 3px #fff, 0 0 14px rgba(109, 124, 240, .5); }
  .signal-node-years { display: block; }
  .signal-node-eight { display: block; }
  .signal-eight { margin: 14px 14px 0 0; float: left; }
  .signal-eight strong { font-size: 54px; }
  .signal-node h3, .signal-node-primary h3 { font-size: 18px; margin-top: 14px; }
  .signal-node p { font-size: 13px; }
  .signal-years strong { font-size: 38px; }

  /* Agenda */
  .agenda-word { font-size: 34vw; top: 4%; right: -6vw; }
  .agenda-header { grid-template-columns: 1fr; gap: 14px; padding: 40px 0 26px; }
  .agenda-meta { text-align: left; grid-auto-flow: column; justify-content: start; gap: 12px; align-items: baseline; }
  .agenda-meta b { font-size: 15px; }
  .agenda-tabs button { height: 54px; font-size: 12.5px; white-space: nowrap; padding: 0 4px; }
  .agenda-tabs button span { display: none; }
  .agenda-tabs button::after { left: 18%; right: 82%; }
  .agenda-tabs button.active::after { left: 18%; right: 18%; }
  .agenda-panels { min-height: 0; }
  .agenda-panel article { grid-template-columns: 54px 14px minmax(0, 1fr); gap: 12px; min-height: 0; padding: 16px 0; }
  .agenda-panel article:hover { padding-left: 0; background: transparent; }
  .agenda-panel article time { font-size: 15.5px; }
  .agenda-panel article > b { display: none; }
  .agenda-panel h3 { font-size: 16px; margin: 4px 0; }
  .agenda-panel p { font-size: 12.5px; }
  .agenda-dot::after { height: 100%; top: 16px; }
  .agenda-note { text-align: left; margin-top: 14px; }

  /* Guests */
  .guest-intro { grid-template-columns: 1fr; gap: 18px; padding: 40px 0 34px; }
  .guest-showcase { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 34px 14px; }
  .home-guest-card figure { width: min(100%, 118px); border-width: 3px; }
  .home-guest-card > div { padding-top: 12px; }
  .home-guest-card small { min-height: 0; font-size: 9.5px; -webkit-line-clamp: 1; }
  .home-guest-card h3 { font-size: 18px; margin: 6px 0 5px; }
  .home-guest-card p { min-height: 0; font-size: 11px; line-height: 1.65; display: -webkit-box; overflow: hidden; -webkit-box-orient: vertical; -webkit-line-clamp: 3; }
  .committee-label span { font-size: 17px; }
  .committee-label i { font-size: 10px; }
  .guest-directory-cta { flex-direction: column; align-items: stretch; gap: 22px; margin-top: 46px; padding: 24px 0; }
  .guest-directory-cta .btn { width: 100%; }

  /* Competition */
  .competition-grid { gap: 44px; padding: 40px 0 32px; }
  .competition-copy h2 { font-size: clamp(28px, 8vw, 38px); }
  .competition-numbers article { min-height: 92px; gap: 16px; }
  .competition-numbers strong { font-size: 32px; }
  .number-track { left: 14px; top: 46px; bottom: 46px; }
  .competition-art { border-radius: 18px; }
  .competition-art img { height: 220px; }
  .competition-benefits { flex-wrap: wrap; justify-content: center; gap: 10px 14px; padding: 18px 0; min-height: 0; font-size: 12.5px; }
  .competition-benefits i { display: none; }

  /* History */
  .history-heading { grid-template-columns: 1fr; gap: 18px; padding: 40px 0 42px; }
  .history-card h3 { font-size: 17px; }

  /* Organizers */
  .organizers-head { grid-template-columns: 1fr; gap: 16px; }
  .org-group { grid-template-columns: 1fr; gap: 12px; min-height: 0; padding: 22px 0; }
  .org-wall { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .org-wall:has(> .org-plate:only-child) { grid-template-columns: 1fr; }
  .org-plate { min-height: 70px; padding: 12px 14px; border-radius: 14px; gap: 9px; }
  .org-plate img { max-height: 32px; max-width: 78%; }
  .org-plate .org-img-rwari { max-height: 34px; }
  .org-plate .org-img-xiaoyao { max-height: 36px; }
  .org-plate .org-img-opcbook, .org-plate .org-img-opctalk { max-height: 24px; }
  .org-plate .org-img-jianchi { max-height: 34px; }
  .org-plate .org-img-alliance { max-height: 38px; }
  .org-plate .org-img-guanhuo { max-height: 44px; }
  .org-plate .org-img-huoxun { max-height: 40px; }
  .org-plate .org-img-bnews { max-height: 36px; }
  .org-plate .org-img-newsfi { max-height: 38px; }
  .org-plate .org-img-chaochuangzhe { max-height: 42px; }
  .org-plate-name { font-size: 16px; }
  .org-plate-text b { font-size: 13.5px; }

  /* Final CTA */
  .final-cta { min-height: 0; }
  .final-cta-content { padding: 64px 0 56px; }
  .final-cta-content > * { width: 100%; }
  .final-cta h2 { width: 100%; font-size: clamp(30px, 9vw, 42px); text-shadow: 0 3px 18px rgba(238, 246, 255, .98); }
  .final-cta h2 .line-inner { white-space: normal; }
  .final-cta-art { height: auto; width: 86%; right: -14%; top: auto; bottom: -6px; transform: none; opacity: .42; }
  .final-cta-art img { width: 100%; height: auto; }
  .final-word { font-size: 42vw; bottom: -4%; }
  .final-chips { flex-wrap: wrap; gap: 8px 12px; font-size: 12px; }
  .final-actions { flex-direction: column; }
  .final-actions .btn { width: 100%; }
  .final-contact-link { margin-top: 28px; }

  /* Footer */
  .site-footer { padding-bottom: 22px; }
  .footer-bottom { flex-direction: column; gap: 8px; }

  /* Modal */
  .modal { padding: 10px; align-items: end; }
  .modal-panel { padding: 32px 20px 26px; border-radius: 22px; max-height: calc(100svh - 20px); }
  .modal h2 { font-size: 26px; }
  .apply-types button { font-size: 12.5px; min-height: 46px; }
  .field-row { grid-template-columns: 1fr; }
  .success-step { min-height: 380px; }
}

/* Very small phones */
@media (max-width: 380px) {
  .hero-title .line-inner { font-size: clamp(40px, 12.6vw, 46px); }
  .stat strong { font-size: 30px; }
  .guest-showcase { gap: 28px 10px; }
}

/* Landscape phones: keep hero compact */
@media (max-width: 920px) and (orientation: landscape) {
  .hero-inner { padding-top: calc(var(--header-h) + 24px); }
}

/* ============================================================
   Reduced motion
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
  .reveal, [data-stagger] > *, .reveal-lines .line-inner { opacity: 1 !important; transform: none !important; }
  .history-line i { transform: none !important; }
}