/* ---------------------------------------------------------------
   Innovation Arena — tokens
   --------------------------------------------------------------- */
:root {
  --font: 'Mulish', 'Helvetica Neue', Arial, sans-serif;
  --gutter: clamp(20px, 5vw, 80px);
  --r-sm: 4px;
  --r-md: 10px;
  --r-lg: 16px;

  --brand: #D50A27;
  --brand-deep: #B30820;
  --wine: #7F212C;

  --ease-out: cubic-bezier(0.23, 1, 0.32, 1);
  --ease: ease;
  --press: 160ms;
}

:root[data-theme="light"] {
  color-scheme: light;
  --bg: #FFFFFF;
  --bg-alt: #F7F4F1;
  --surface: #FFFFFF;
  --surface-2: #F2EDE8;
  --text: #1F2224;
  --text-2: #5A5F63;
  --text-3: #8A9094;
  --line: #E4DFDA;
  --line-strong: #CFC8C1;
  --accent: #D50A27;
  --accent-text: #C40924;
  --accent-soft: rgba(213, 10, 39, 0.08);
  --invert-bg: #1C1E20;
  --invert-text: #FFFFFF;
  --invert-text-2: rgba(255, 255, 255, 0.68);
  --invert-line: rgba(255, 255, 255, 0.12);
  --media-bg: #FFFFFF;
  --header-bg: rgba(255, 255, 255, 0.86);
  --shadow: 0 1px 2px rgba(31, 34, 36, 0.04), 0 12px 32px -20px rgba(31, 34, 36, 0.18);
  --focus: #D50A27;
}
:root, :root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #141517;
  --bg-alt: #1A1C1E;
  --surface: #1E2124;
  --surface-2: #26292C;
  --text: #F3F1EE;
  --text-2: #A9ADB0;
  --text-3: #767B7F;
  --line: #2A2E31;
  --line-strong: #3A3F43;
  --accent: #E4203C;
  --accent-text: #FF5A6E;
  --accent-soft: rgba(228, 32, 60, 0.14);
  --invert-bg: #0F1011;
  --invert-text: #F3F1EE;
  --invert-text-2: rgba(243, 241, 238, 0.66);
  --invert-line: rgba(255, 255, 255, 0.1);
  --media-bg: #0C0D0E;
  --header-bg: rgba(20, 21, 23, 0.84);
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 16px 40px -24px rgba(0, 0, 0, 0.6);
  --focus: #FF5A6E;
}

/* ---------------------------------------------------------------
   Base
   --------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 90px; -webkit-text-size-adjust: 100%; text-size-adjust: 100%; overflow-x: clip; }
body { overflow-x: clip; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
.theme-switching body, .theme-switching .site-header, .theme-switching .section, .theme-switching .hero, .theme-switching .site-footer { transition: background-color 280ms var(--ease), color 280ms var(--ease), border-color 280ms var(--ease); }
body:has(dialog[open]) { overflow: hidden; }
h1, h2, h3, h4, p, figure { margin: 0; }
h1, h2, h3, h4 { font-weight: 700; letter-spacing: -0.01em; line-height: 1.12; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; background: none; border: 0; padding: 0; }
button, a { -webkit-tap-highlight-color: transparent; }
input, textarea, select { font: inherit; }
svg { display: block; }
img { max-width: 100%; height: auto; }
::selection { background: var(--brand); color: #fff; }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 3px; border-radius: 3px; }

.svg-library { position: absolute; width: 0; height: 0; overflow: hidden; }
.icon { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; flex-shrink: 0; }
.container { width: 100%; max-width: 1280px; margin: 0 auto; padding: 0 var(--gutter); padding-left: max(var(--gutter), env(safe-area-inset-left)); padding-right: max(var(--gutter), env(safe-area-inset-right)); }
.section { padding: clamp(72px, 8vw, 112px) 0; background: var(--bg); }
.section-alt { background: var(--bg-alt); }
.section-invert { background: var(--invert-bg); color: var(--invert-text); }

.skip-link { position: absolute; left: 16px; top: -60px; z-index: 100; padding: 10px 16px; background: var(--text); color: var(--bg); border-radius: var(--r-sm); font-weight: 600; }
.skip-link:focus { top: 16px; }

.label { font-size: 14px; font-weight: 700; color: var(--accent-text); line-height: 1.4; margin-bottom: 14px; }
.section-invert .label { color: var(--accent-text); }
.label-on-red { color: rgba(255, 255, 255, 0.82); }
h2 { font-size: clamp(30px, 3.4vw, 46px); line-height: 1.12; max-width: 18ch; }
.section-intro { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr); align-items: end; gap: 32px 64px; margin-bottom: clamp(32px, 4vw, 52px); }
.intro-copy { font-size: 18px; font-weight: 300; line-height: 1.6; color: var(--text-2); max-width: 46ch; }
.section-invert .intro-copy { color: var(--invert-text-2); }

/* ---------------------------------------------------------------
   Buttons & links
   --------------------------------------------------------------- */
.button {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 48px; padding: 12px 22px;
  border-radius: var(--r-sm); font-weight: 700; font-size: 15px; line-height: 1.2;
  border: 1px solid transparent; white-space: nowrap;
  transition: transform var(--press) var(--ease-out), background-color 180ms var(--ease), border-color 180ms var(--ease), color 180ms var(--ease);
}
.button:active { transform: scale(0.97); }
.button-primary { background: var(--brand); color: #fff; }
.button-ghost { background: transparent; color: var(--text); border-color: var(--line-strong); }
.button-white { background: #fff; color: var(--brand); }
.button.is-static { cursor: default; pointer-events: none; }
.button-small { min-height: 40px; padding: 8px 16px; font-size: 14px; }
.button .icon { width: 18px; height: 18px; }
@media (hover: hover) and (pointer: fine) {
  .button-primary:hover { background: var(--brand-deep); }
  .button-ghost:hover { border-color: var(--text); }
  .button-white:hover { background: #F7F4F1; }
}

.text-link { display: inline-flex; align-items: center; gap: 8px; font-weight: 700; font-size: 15px; color: var(--accent-text); transition: transform var(--press) var(--ease-out); }
.text-link:active { transform: scale(0.98); }
.text-link.is-static { color: var(--text-3); cursor: default; }
.text-link .icon { width: 18px; height: 18px; transition: transform 200ms var(--ease-out); }
@media (hover: hover) and (pointer: fine) { .text-link:hover .icon { transform: translateX(3px); } }

/* ---------------------------------------------------------------
   Header
   --------------------------------------------------------------- */
.site-header { position: sticky; top: 0; z-index: 50; background: var(--header-bg); -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px); border-bottom: 1px solid transparent; transition: border-color 200ms var(--ease); }
.site-header.is-scrolled { border-bottom-color: var(--line); }
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; height: 72px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-size: 18px; font-weight: 400; letter-spacing: -0.01em; }
.brand-word strong { font-weight: 700; }
.brand-mark { width: 30px; height: 30px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; }
.brand-mark-dot { fill: var(--brand); stroke: none; }
.desktop-nav { display: flex; gap: 30px; font-size: 15px; font-weight: 600; }
.desktop-nav a { position: relative; padding: 6px 0; color: var(--text-2); transition: color 160ms var(--ease); }
.desktop-nav a::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 2px; background: var(--brand); transform: scaleX(0); transform-origin: left; transition: transform 200ms var(--ease-out); }
.desktop-nav a.is-current { color: var(--text); }
.desktop-nav a.is-current::after { transform: scaleX(1); }
@media (hover: hover) and (pointer: fine) { .desktop-nav a:hover { color: var(--text); } }
.header-actions { display: flex; align-items: center; gap: 10px; }
.theme-toggle { position: relative; display: grid; place-items: center; width: 40px; height: 40px; border-radius: 50%; border: 1px solid var(--line); color: var(--text-2); transition: transform var(--press) var(--ease-out), border-color 180ms var(--ease), color 180ms var(--ease); }
.theme-toggle:active { transform: scale(0.94); }
.theme-toggle .icon { grid-area: 1 / 1; width: 18px; height: 18px; transition: opacity 200ms var(--ease), transform 260ms var(--ease-out); }
:root[data-theme="light"] .icon-sun { opacity: 0; transform: rotate(40deg) scale(0.8); }
:root:not([data-theme="light"]) .icon-moon { opacity: 0; transform: rotate(-40deg) scale(0.8); }
@media (hover: hover) and (pointer: fine) { .theme-toggle:hover { border-color: var(--text); color: var(--text); } }
.menu-toggle { display: none; width: 40px; height: 40px; flex-direction: column; align-items: center; justify-content: center; gap: 6px; border-radius: var(--r-sm); }
.menu-toggle span { display: block; width: 22px; height: 2px; background: currentColor; transition: transform 220ms var(--ease-out); }
.menu-toggle[aria-expanded="true"] span:first-child { transform: translateY(4px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] span:last-child { transform: translateY(-4px) rotate(-45deg); }
.mobile-nav { display: none; flex-direction: column; padding: 4px var(--gutter) 20px; border-top: 1px solid var(--line); background: var(--bg); }
.mobile-nav:not([hidden]) { display: flex; }
.mobile-nav a { padding: 14px 0; font-size: 18px; font-weight: 600; border-bottom: 1px solid var(--line); }
.mobile-nav .mobile-cta { color: var(--accent-text); border-bottom: 0; }

/* ---------------------------------------------------------------
   Hero
   --------------------------------------------------------------- */
.hero { background: var(--bg); }
.hero-inner { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr); align-items: center; gap: clamp(32px, 5vw, 80px); padding-top: clamp(40px, 6vw, 88px); padding-bottom: clamp(48px, 6vw, 88px); }
h1 { font-size: clamp(42px, 5.4vw, 76px); line-height: 1.06; letter-spacing: -0.015em; max-width: 12ch; }
h1 .accent { color: var(--accent-text); }
.hero-description { margin-top: 24px; font-size: clamp(18px, 1.5vw, 21px); font-weight: 300; line-height: 1.55; color: var(--text-2); max-width: 46ch; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.hero-points { display: flex; flex-wrap: wrap; gap: 8px 28px; margin: 36px 0 0; padding: 24px 0 0; list-style: none; border-top: 1px solid var(--line); font-size: 14px; font-weight: 600; color: var(--text-2); }
.hero-points li { position: relative; padding-left: 14px; }
.hero-points li::before { content: ""; position: absolute; left: 0; top: 0.55em; width: 6px; height: 6px; border-radius: 50%; background: var(--brand); }
.hero-media { position: relative; border-radius: var(--r-lg); background: var(--media-bg); overflow: hidden; aspect-ratio: 1; max-width: 560px; width: 100%; justify-self: end; box-shadow: var(--shadow); }
.arena-sculpture { display: block; width: 100%; height: 100%; object-fit: cover; }
:root:not([data-theme="light"]) .hero-img-light { display: none; }
:root[data-theme="light"] .hero-img-dark { display: none; }
:root[data-theme="light"] .hero-media figcaption { color: rgba(31, 34, 36, 0.72); }
.hero-media figcaption { position: absolute; left: 22px; bottom: 18px; font-size: 13px; font-weight: 600; color: rgba(255, 255, 255, 0.72); }

/* ---------------------------------------------------------------
   Belief strip
   --------------------------------------------------------------- */
.belief-strip { background: var(--brand); color: #fff; }
.belief-inner { display: grid; grid-template-columns: repeat(3, 1fr); padding: 22px 0; font-size: 18px; font-weight: 300; }
.belief-inner span { padding: 2px 0; }
.belief-inner span + span { border-left: 1px solid rgba(255, 255, 255, 0.28); padding-left: 32px; }

/* ---------------------------------------------------------------
   Opportunity
   --------------------------------------------------------------- */
.route-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.route-card { position: relative; display: flex; flex-direction: column; align-items: flex-start; padding: 36px 36px 36px; border-radius: var(--r-md); border: 1px solid var(--line); background: var(--surface); transition: border-color 200ms var(--ease), transform 300ms var(--ease-out), box-shadow 300ms var(--ease-out); }
@media (hover: hover) and (pointer: fine) { .route-card:hover { border-color: var(--line-strong); transform: translateY(-3px); box-shadow: var(--shadow); } }
.route-number { font-size: 14px; font-weight: 700; color: var(--text-3); }
.route-icon { display: grid; place-items: center; width: 52px; height: 52px; margin-top: 40px; border-radius: 50%; background: var(--accent-soft); color: var(--accent-text); }
.route-icon .icon { width: 24px; height: 24px; }
.route-card h3 { margin-top: 24px; font-size: clamp(24px, 2.2vw, 30px); }
.route-card p { margin-top: 12px; font-size: 16px; color: var(--text-2); max-width: 44ch; }
.route-card .text-link { margin-top: 26px; }
.participation-note { margin-top: 24px; color: var(--text-3); font-size: 14px; }

/* ---------------------------------------------------------------
   Tracks
   --------------------------------------------------------------- */
.track-explorer { display: grid; grid-template-columns: minmax(260px, 360px) 1fr; gap: 24px; }
.track-tabs { display: flex; flex-direction: column; border-top: 1px solid var(--line); }
.track-tab { display: grid; grid-template-columns: 36px 1fr; align-items: center; gap: 12px; padding: 18px 16px; border-bottom: 1px solid var(--line); border-left: 2px solid transparent; text-align: left; font-weight: 600; font-size: 16px; color: var(--text-2); transition: color 160ms var(--ease), border-color 160ms var(--ease), background-color 160ms var(--ease); }
.track-number { font-size: 13px; font-weight: 700; color: var(--text-3); }
.track-tab.is-active { color: var(--text); border-left-color: var(--brand); background: var(--surface); }
.track-tab.is-active .track-number { color: var(--accent-text); }
@media (hover: hover) and (pointer: fine) { .track-tab:not(.is-active):hover { color: var(--text); } }
.track-panel { display: grid; grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr); gap: 32px; min-height: 420px; padding: 40px; border-radius: var(--r-md); background: var(--surface); border: 1px solid var(--line); }
.track-figure { position: relative; display: flex; flex-direction: column; justify-content: space-between; min-height: 240px; padding: 20px 24px; border-radius: var(--r-md); background: var(--bg-alt); overflow: hidden; }
:root:not([data-theme="light"]) .track-figure { background: var(--surface-2); }
.track-big-number { font-size: clamp(120px, 12vw, 180px); font-weight: 300; line-height: 0.9; letter-spacing: -0.04em; color: var(--accent-text); opacity: 0.9; transition: opacity 200ms var(--ease), transform 260ms var(--ease-out); }
.track-figure-icon { display: grid; place-items: center; width: 48px; height: 48px; border-radius: 50%; background: var(--brand); color: #fff; align-self: flex-end; }
.track-figure-icon .icon { width: 22px; height: 22px; }
.track-panel-copy { display: flex; flex-direction: column; justify-content: center; transition: opacity 200ms var(--ease), transform 240ms var(--ease-out); }
.track-panel.is-switching .track-panel-copy { opacity: 0; transform: translateY(6px); }
.track-panel.is-switching .track-big-number { opacity: 0; transform: translateY(8px); }
.track-panel-copy h3 { font-size: clamp(26px, 2.6vw, 36px); max-width: 16ch; }
.track-description { margin-top: 16px; font-size: 17px; font-weight: 300; color: var(--text-2); max-width: 46ch; }
.track-prompt { margin-top: 26px; padding: 18px 20px; border-left: 2px solid var(--brand); background: var(--bg-alt); border-radius: 0 var(--r-sm) var(--r-sm) 0; }
:root:not([data-theme="light"]) .track-prompt { background: var(--surface-2); }
.track-prompt span { display: block; font-size: 13px; font-weight: 700; color: var(--text-3); margin-bottom: 6px; }
.track-prompt p { font-size: 16px; font-weight: 600; line-height: 1.5; }
.formats { margin-top: 36px; padding-top: 32px; border-top: 1px solid var(--line); display: grid; grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr); gap: 24px 48px; }
.formats-intro h3 { font-size: 22px; }
.formats-intro p { margin-top: 10px; color: var(--text-2); font-size: 15px; max-width: 34ch; }
.format-groups { display: grid; gap: 18px; }
.format-group { display: grid; grid-template-columns: 72px 1fr; gap: 12px; align-items: start; }
.format-group-name { padding-top: 7px; font-size: 13px; font-weight: 700; color: var(--accent-text); }
.format-chips { display: flex; flex-wrap: wrap; gap: 8px; }
.format-chips span { padding: 7px 12px; border-radius: 999px; border: 1px solid var(--line-strong); font-size: 13px; font-weight: 600; color: var(--text-2); }

/* ---------------------------------------------------------------
   Rewards
   --------------------------------------------------------------- */
.reward-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.reward-card { padding: 28px; border-radius: var(--r-md); border: 1px solid var(--line); background: var(--surface); transition: border-color 200ms var(--ease), transform 300ms var(--ease-out), box-shadow 300ms var(--ease-out); }
@media (hover: hover) and (pointer: fine) { .reward-card:hover { border-color: var(--line-strong); transform: translateY(-3px); box-shadow: var(--shadow); } }
.reward-icon { display: grid; place-items: center; width: 48px; height: 48px; border-radius: 50%; background: var(--brand); color: #fff; }
.reward-icon .icon { width: 22px; height: 22px; }
.reward-card h3 { margin-top: 22px; font-size: 20px; }
.reward-card p { margin-top: 10px; color: var(--text-2); font-size: 15px; }
.reward-note { margin-top: 20px; color: var(--text-3); font-size: 14px; }

/* ---------------------------------------------------------------
   Journey
   --------------------------------------------------------------- */
.journey-steps { position: relative; display: grid; grid-template-columns: repeat(5, 1fr); gap: 24px; margin: 0; padding: 0; list-style: none; }
.journey-steps::before { content: ""; position: absolute; top: 20px; left: 20px; right: 20px; height: 1px; background: var(--line-strong); }
.journey-steps li { position: relative; padding-top: 60px; }
.step-node { position: absolute; top: 0; left: 0; display: grid; place-items: center; width: 40px; height: 40px; border-radius: 50%; background: var(--bg); border: 1px solid var(--line-strong); font-size: 13px; font-weight: 700; color: var(--text-2); }
.journey-steps li:first-child .step-node { background: var(--brand); border-color: var(--brand); color: #fff; }
.journey-steps h3 { font-size: 20px; }
.journey-steps p { margin-top: 8px; color: var(--text-2); font-size: 15px; max-width: 26ch; }

.support-grid { display: grid; grid-template-columns: 1.3fr 1fr 1fr 1fr; gap: 32px; margin-top: clamp(56px, 6vw, 80px); padding-top: 40px; border-top: 1px solid var(--line); }
.support-heading h3 { font-size: clamp(24px, 2.2vw, 30px); max-width: 14ch; }
.support-item .icon { width: 24px; height: 24px; color: var(--accent-text); }
.support-item h4 { margin-top: 16px; font-size: 17px; }
.support-item p { margin-top: 8px; color: var(--text-2); font-size: 15px; }

.graduation { display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr); gap: 40px; margin-top: 40px; padding: clamp(28px, 3vw, 40px); border-radius: var(--r-md); background: var(--bg-alt); }
:root:not([data-theme="light"]) .graduation { background: var(--surface); border: 1px solid var(--line); }
.graduation-intro h3 { font-size: clamp(24px, 2.2vw, 30px); }
.graduation-intro p { margin-top: 10px; color: var(--text-2); }
.human-note { font-weight: 700; color: var(--accent-text); }
.graduation ul { margin: 0; padding: 0; list-style: none; }
.graduation li { display: flex; align-items: center; gap: 12px; padding: 14px 0; border-bottom: 1px solid var(--line); font-weight: 600; font-size: 15px; }
.graduation li:last-child { border-bottom: 0; }
.graduation li .icon { width: 18px; height: 18px; color: var(--accent-text); }

/* ---------------------------------------------------------------
   Impact
   --------------------------------------------------------------- */
.impact-grid { display: grid; grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr); gap: clamp(40px, 6vw, 96px); }
.impact-heading { position: sticky; top: 104px; align-self: start; }
.impact-heading > p:last-child { margin-top: 18px; font-size: 18px; font-weight: 300; color: var(--invert-text-2); max-width: 30ch; }
.impact-principles article { display: grid; grid-template-columns: 56px 1fr; gap: 16px; padding: 30px 0; border-top: 1px solid var(--invert-line); }
.impact-principles article:last-child { border-bottom: 1px solid var(--invert-line); }
.principle-number { font-size: 14px; font-weight: 700; color: var(--accent-text); padding-top: 6px; }
.impact-principles h3 { font-size: clamp(20px, 1.9vw, 26px); }
.impact-principles p { margin-top: 8px; font-size: 16px; color: var(--invert-text-2); max-width: 58ch; }

/* ---------------------------------------------------------------
   FAQ
   --------------------------------------------------------------- */
.faq-grid { display: grid; grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr); gap: clamp(40px, 6vw, 96px); }
.faq-list details { border-top: 1px solid var(--line); }
.faq-list details:last-child { border-bottom: 1px solid var(--line); }
.faq-list summary { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 20px 0; list-style: none; cursor: pointer; font-size: 18px; font-weight: 700; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-icon { display: grid; place-items: center; flex-shrink: 0; width: 34px; height: 34px; border-radius: 50%; border: 1px solid var(--line-strong); color: var(--text); transition: transform 240ms var(--ease-out), background-color 180ms var(--ease), color 180ms var(--ease), border-color 180ms var(--ease); }
.faq-icon .icon { width: 16px; height: 16px; }
details[open] .faq-icon { transform: rotate(45deg); background: var(--brand); border-color: var(--brand); color: #fff; }
.faq-body { overflow: hidden; }
.faq-body p { padding: 0 60px 24px 0; color: var(--text-2); font-size: 16px; max-width: 62ch; }

/* ---------------------------------------------------------------
   Start CTA
   --------------------------------------------------------------- */
.start-section { background: var(--bg); padding: 0 0 clamp(72px, 8vw, 112px); }
.start-inner { display: grid; grid-template-columns: 1.2fr 1fr; align-items: end; gap: 40px; padding: clamp(36px, 5vw, 64px); border-radius: var(--r-md); background: var(--brand); color: #fff; }
.start-inner h2 { color: #fff; }
.start-action { display: flex; flex-direction: column; align-items: flex-start; gap: 16px; }
.start-action p { font-size: 18px; font-weight: 300; color: rgba(255, 255, 255, 0.9); }
.start-action span { font-size: 14px; color: rgba(255, 255, 255, 0.72); }

/* ---------------------------------------------------------------
   Footer
   --------------------------------------------------------------- */
.site-footer { background: var(--invert-bg); color: var(--invert-text); padding: 56px 0 calc(28px + env(safe-area-inset-bottom)); }
.footer-main { display: grid; grid-template-columns: 1.4fr 1fr auto; gap: 40px; align-items: start; padding-bottom: 36px; border-bottom: 1px solid var(--invert-line); }
.footer-brand p { margin-top: 16px; color: var(--invert-text-2); font-size: 15px; max-width: 30ch; }
.footer-nav { display: grid; gap: 10px; font-size: 15px; font-weight: 600; color: var(--invert-text-2); }
.footer-nav a { width: fit-content; transition: color 160ms var(--ease); }
@media (hover: hover) and (pointer: fine) { .footer-nav a:hover { color: var(--invert-text); } }
.sponsor { display: flex; flex-direction: column; align-items: flex-start; gap: 10px; padding: 16px 18px; border-radius: var(--r-md); border: 1px solid var(--invert-line); }
.sponsor > span { font-size: 13px; font-weight: 600; color: var(--invert-text-2); }
.sponsor-logo { display: block; width: 76px; height: auto; }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; padding-top: 22px; font-size: 13px; color: var(--invert-text-2); }
.footer-bottom a { color: var(--invert-text); }

/* ---------------------------------------------------------------
   Dialog
   --------------------------------------------------------------- */
dialog#idea-dialog { width: min(620px, calc(100vw - 32px)); max-height: calc(100vh - 32px); max-height: calc(100dvh - 32px); margin: auto; padding: 0; border: 1px solid var(--line); border-radius: var(--r-md); background: var(--surface); color: var(--text); box-shadow: 0 30px 70px -30px rgba(0, 0, 0, 0.45); overflow: auto; }
dialog#idea-dialog::backdrop { background: rgba(15, 16, 17, 0.55); }
dialog#idea-dialog[open] { animation: dialog-in 220ms var(--ease-out); }
dialog#idea-dialog[open]::backdrop { animation: backdrop-in 220ms var(--ease); }
dialog#idea-dialog.is-closing { animation: dialog-out 150ms var(--ease-out) forwards; }
dialog#idea-dialog.is-closing::backdrop { animation: backdrop-out 150ms var(--ease) forwards; }
@keyframes dialog-in { from { opacity: 0; transform: scale(0.97) translateY(6px); } }
@keyframes sheet-in { from { transform: translateY(24px); opacity: 0; } }
@keyframes dialog-out { to { opacity: 0; transform: scale(0.98); } }
@keyframes backdrop-in { from { opacity: 0; } }
@keyframes backdrop-out { to { opacity: 0; } }
.dialog-inner { position: relative; padding: clamp(26px, 4vw, 40px); }
.dialog-close { position: absolute; top: 16px; right: 16px; display: grid; place-items: center; width: 38px; height: 38px; border-radius: 50%; border: 1px solid var(--line); color: var(--text-2); transition: transform var(--press) var(--ease-out), border-color 160ms var(--ease), color 160ms var(--ease); }
.dialog-close:active { transform: scale(0.94); }
@media (hover: hover) and (pointer: fine) { .dialog-close:hover { border-color: var(--text); color: var(--text); } }
.dialog-inner h2 { font-size: clamp(26px, 3vw, 32px); }
.dialog-intro { margin-top: 10px; color: var(--text-2); font-size: 15px; }
#idea-form { margin-top: 22px; display: grid; gap: 8px; }
#idea-form label { display: flex; justify-content: space-between; align-items: baseline; margin-top: 10px; font-size: 14px; font-weight: 700; }
#idea-form label span { font-size: 12px; font-weight: 600; color: var(--text-3); }
#idea-form input, #idea-form textarea, #idea-form select { width: 100%; padding: 11px 13px; border-radius: var(--r-sm); border: 1px solid var(--line-strong); background: var(--bg); color: var(--text); font-size: 16px; -webkit-appearance: none; appearance: none; transition: border-color 160ms var(--ease), box-shadow 160ms var(--ease); }
#idea-form textarea { resize: vertical; min-height: 64px; line-height: 1.5; }
#idea-form input:focus, #idea-form textarea:focus, #idea-form select:focus { outline: none; border-color: var(--brand); box-shadow: 0 0 0 3px var(--accent-soft); }
#idea-form .is-invalid { border-color: var(--brand); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.draft-note { margin-top: 10px; font-size: 13px; color: var(--text-3); }
.download-button { margin-top: 8px; width: 100%; }
.button-content { display: inline-flex; align-items: center; gap: 10px; transition: opacity 200ms var(--ease), filter 200ms var(--ease); }
.download-button.is-busy .button-content { opacity: 0.6; filter: blur(2px); }
.download-status { min-height: 20px; font-size: 14px; font-weight: 600; color: var(--accent-text); text-align: center; }

/* ---------------------------------------------------------------
   Reveal on scroll
   --------------------------------------------------------------- */
.js-ready .reveal { opacity: 0; transform: translateY(12px); transition: opacity 500ms var(--ease-out), transform 600ms var(--ease-out); }
.js-ready .reveal.is-visible { opacity: 1; transform: none; }
.js-ready .reveal-group .reveal:nth-child(2) { transition-delay: 60ms; }
.js-ready .reveal-group .reveal:nth-child(3) { transition-delay: 120ms; }
.js-ready .reveal-group .reveal:nth-child(4) { transition-delay: 180ms; }
.js-ready .reveal-group .reveal:nth-child(5) { transition-delay: 240ms; }

/* ---------------------------------------------------------------
   Responsive
   --------------------------------------------------------------- */
@media (max-width: 1100px) {
  .support-grid { grid-template-columns: 1fr 1fr; }
  .support-heading { grid-column: 1 / -1; }
  .journey-steps { grid-template-columns: repeat(3, 1fr); row-gap: 36px; }
  .journey-steps::before { display: none; }
  .reward-grid { grid-template-columns: 1fr 1fr; }
  .formats { grid-template-columns: 1fr; }
  .footer-main { grid-template-columns: 1fr 1fr; }
  .sponsor { grid-column: 1 / -1; }
}
@media (max-width: 900px) {
  .desktop-nav, .header-cta { display: none; }
  .menu-toggle { display: flex; }
  .hero-inner { grid-template-columns: 1fr; gap: 32px; padding-top: 32px; }
  .hero-media { max-width: none; justify-self: stretch; }
  .section-intro { grid-template-columns: 1fr; gap: 16px; }
  .belief-inner { grid-template-columns: 1fr; gap: 10px; padding: 20px 0; }
  .belief-inner span + span { border-left: 0; padding-left: 0; }
  .route-grid { grid-template-columns: 1fr; }
  .route-icon { margin-top: 28px; }
  .track-explorer { grid-template-columns: 1fr; }
  .track-tabs { flex-direction: row; gap: 8px; border-top: 0; overflow-x: auto; padding-bottom: 6px; margin: 0 calc(-1 * var(--gutter)); padding-left: var(--gutter); padding-right: var(--gutter); scrollbar-width: none; }
  .track-tabs::-webkit-scrollbar { display: none; }
  .track-tab { grid-template-columns: auto auto; padding: 10px 14px; white-space: nowrap; flex-shrink: 0; font-size: 14px; border: 1px solid var(--line); border-radius: 999px; }
  .track-tab.is-active { border-color: var(--brand); background: var(--accent-soft); }
  .track-panel { grid-template-columns: 1fr; padding: 24px; min-height: 0; }
  .track-figure { min-height: 180px; }
  .impact-grid, .faq-grid { grid-template-columns: 1fr; }
  .impact-heading { position: static; }
  .graduation { grid-template-columns: 1fr; gap: 20px; }
  .start-inner { grid-template-columns: 1fr; align-items: start; }
}
@media (max-width: 600px) {
  .header-inner { height: 64px; }
  .header-actions { gap: 6px; }
  .button { min-height: 48px; }
  .hero-actions .button { flex: 1 1 100%; }
  dialog#idea-dialog { width: 100vw; max-width: none; max-height: calc(100dvh - 24px); margin: auto 0 0; border-radius: var(--r-lg) var(--r-lg) 0 0; border-left: 0; border-right: 0; border-bottom: 0; }
  .dialog-inner { padding: 24px 20px calc(24px + env(safe-area-inset-bottom)); }
  dialog#idea-dialog[open] { animation: sheet-in 260ms var(--ease-out); }
  .mobile-nav a { min-height: 48px; }
  .track-tab { min-height: 44px; }
  .faq-list summary { font-size: 17px; }
  h1 { font-size: clamp(38px, 11vw, 52px); max-width: none; }
  .journey-steps { grid-template-columns: 1fr; row-gap: 24px; }
  .journey-steps li { padding-top: 0; padding-left: 56px; }
  .journey-steps p { max-width: none; }
  .support-grid { grid-template-columns: 1fr; gap: 28px; }
  .reward-grid { grid-template-columns: 1fr; }
  .format-group { grid-template-columns: 1fr; gap: 6px; }
  .format-group-name { padding-top: 0; }
  .faq-body p { padding-right: 0; }
  .form-row { grid-template-columns: 1fr; }
  .footer-main { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; gap: 8px; }
}

/* ---------------------------------------------------------------
   Reduced motion
   --------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js-ready .reveal { opacity: 1; transform: none; transition: none; }
  dialog#idea-dialog[open] { animation: backdrop-in 160ms var(--ease); }
  .track-panel.is-switching .track-panel-copy, .track-panel.is-switching .track-big-number { transform: none; }
}