:root {
  --ink: #142c33;
  --ink-deep: #0e2229;
  --sea: #176b73;
  --sea-bright: #27939a;
  --coral: #f16b4f;
  --coral-deep: #bd4c3c;
  --sun: #f4b942;
  --sand: #f4efe3;
  --paper: #fbfaf5;
  --mist: #e4eeeb;
  --line: #cfd9d2;
  --muted: #627176;
  --white: #fffdf8;
  --display: "Noto Serif TC", Georgia, serif;
  --body: "Noto Sans TC", "Microsoft JhengHei", system-ui, sans-serif;
  --mono: "IBM Plex Mono", "Cascadia Mono", Consolas, monospace;
  --r-sm: 5px;
  --r-md: 12px;
  --r-lg: 24px;
  --shadow-rest: 0 1px 2px rgba(20, 44, 51, .08), 0 7px 16px rgba(20, 44, 51, .05);
  --shadow-float: 0 18px 35px rgba(14, 34, 41, .2);
  --sp-1: .5rem;
  --sp-2: 1rem;
  --sp-3: 1.5rem;
  --sp-4: 2rem;
  --sp-6: 3rem;
  --sp-8: 4rem;
  --sp-12: 6rem;
}

* { box-sizing: border-box; }

[hidden] { display: none !important; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--body);
  line-height: 1.75;
  text-rendering: optimizeLegibility;
}

body::before {
  position: fixed;
  z-index: -1;
  inset: 0;
  pointer-events: none;
  opacity: .32;
  background-image: repeating-linear-gradient(0deg, rgba(20, 44, 51, .02) 0 1px, transparent 1px 4px);
  content: "";
}

a { color: inherit; }

button, a { -webkit-tap-highlight-color: transparent; }

button { font: inherit; }

code {
  padding: .1em .35em;
  border: 1px solid rgba(23, 107, 115, .22);
  border-radius: 3px;
  color: var(--sea);
  background: rgba(228, 238, 235, .75);
  font-family: var(--mono);
  font-size: .88em;
}

.shell {
  width: min(1160px, calc(100% - 2.5rem));
  margin: 0 auto;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: -5rem;
  left: 1rem;
  padding: .6rem 1rem;
  border-radius: var(--r-sm);
  color: var(--white);
  background: var(--ink);
  transition: top .2s ease;
}

.skip-link:focus { top: 1rem; }

.notice-bar {
  color: #d9eee9;
  background: var(--ink-deep);
  font-size: .76rem;
  letter-spacing: .04em;
}

.notice-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 2.15rem;
  gap: 1rem;
}

.notice-dot {
  display: inline-block;
  width: .45rem;
  height: .45rem;
  margin: 0 .45rem .05rem 0;
  border-radius: 50%;
  background: var(--sun);
  box-shadow: 0 0 0 3px rgba(244, 185, 66, .15);
}

.notice-date { color: #9db7b4; }

.site-header {
  position: sticky;
  z-index: 20;
  top: 0;
  border-bottom: 1px solid rgba(207, 217, 210, .8);
  background: rgba(251, 250, 245, .92);
  backdrop-filter: blur(14px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 4.7rem;
  gap: 2rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: .7rem;
  color: var(--ink);
  text-decoration: none;
  white-space: nowrap;
}

.brand > span:last-child { display: grid; line-height: 1.1; }

.brand strong {
  color: var(--sea);
  font-family: var(--mono);
  font-size: 1.05rem;
  letter-spacing: .12em;
}

.brand small { margin-top: .23rem; color: var(--muted); font-size: .68rem; letter-spacing: .17em; }

.brand-mark {
  position: relative;
  display: flex;
  align-items: end;
  gap: 2px;
  width: 2rem;
  height: 2rem;
  padding: .35rem;
  overflow: hidden;
  border: 1px solid var(--sea);
  border-radius: 50% 50% 45% 45%;
  background: var(--mist);
}

.brand-mark::before,
.brand-mark::after {
  position: absolute;
  right: -4px;
  left: -4px;
  height: .5rem;
  border-top: 1px solid var(--sea);
  border-radius: 50%;
  content: "";
}

.brand-mark::before { top: .43rem; }
.brand-mark::after { top: .67rem; opacity: .55; }
.brand-mark span { z-index: 1; display: block; width: 4px; border-radius: 3px 3px 0 0; background: var(--coral); }
.brand-mark span:nth-child(1) { height: 7px; }
.brand-mark span:nth-child(2) { height: 12px; background: var(--sea); }
.brand-mark span:nth-child(3) { height: 9px; background: var(--sun); }

.site-nav { display: flex; align-items: center; gap: .25rem; }

.site-nav a {
  padding: .45rem .7rem;
  border-bottom: 2px solid transparent;
  color: var(--muted);
  font-size: .86rem;
  text-decoration: none;
  transition: color .2s ease, border-color .2s ease, background .2s ease;
}

.site-nav a:hover,
.site-nav a.is-active { border-color: var(--coral); color: var(--ink); }

.site-nav .nav-cta { margin-left: .35rem; border-color: var(--sea); color: var(--sea); font-weight: 700; }
.site-nav .nav-cta:hover { color: var(--white); background: var(--sea); }

.menu-toggle { display: none; }

.section { padding: var(--sp-12) 0; }

.hero {
  position: relative;
  overflow: hidden;
  min-height: 43rem;
  padding: clamp(4rem, 8vw, 7.2rem) 0 5.2rem;
  background-color: var(--paper);
  background-image: linear-gradient(rgba(23, 107, 115, .06) 1px, transparent 1px), linear-gradient(90deg, rgba(23, 107, 115, .06) 1px, transparent 1px);
  background-position: center;
  background-size: 44px 44px;
}

.hero::after {
  position: absolute;
  right: -12rem;
  bottom: -13rem;
  width: 35rem;
  height: 35rem;
  border: 1px solid rgba(23, 107, 115, .13);
  border-radius: 50%;
  box-shadow: 0 0 0 34px rgba(23, 107, 115, .025), 0 0 0 68px rgba(23, 107, 115, .025);
  content: "";
}

.hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: 1.04fr .96fr; align-items: center; gap: clamp(2rem, 7vw, 7rem); }

.eyebrow,
.mini-label,
.resource-label,
.stamp {
  margin: 0 0 .8rem;
  color: var(--sea);
  font-family: var(--mono);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .16em;
  line-height: 1.4;
  text-transform: uppercase;
}

.eyebrow span { color: var(--coral-deep); }

h1, h2, h3, h4, p { margin-top: 0; }

h1, h2 { font-family: var(--display); letter-spacing: -.045em; line-height: 1.2; }

h1 { max-width: 11ch; margin-bottom: 1.5rem; font-size: clamp(3.2rem, 7vw, 6.35rem); font-weight: 900; }
h1 em, h2 em { color: var(--coral); font-style: normal; }

.hero-lead { max-width: 38rem; margin-bottom: 2rem; color: #40565a; font-size: 1.1rem; }

.hero-actions { display: flex; flex-wrap: wrap; gap: .7rem; margin-bottom: 3rem; }

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.85rem;
  padding: .6rem 1rem;
  border: 1px solid transparent;
  border-radius: var(--r-sm);
  font-size: .88rem;
  font-weight: 700;
  text-decoration: none;
  transition: transform .2s ease, background .2s ease, color .2s ease, box-shadow .2s ease;
}

.button:hover { transform: translateY(-2px); box-shadow: var(--shadow-rest); }
.button span { margin-left: .55rem; font-size: 1.1rem; line-height: 1; }
.button-coral { color: var(--white); background: var(--coral); box-shadow: 4px 4px 0 rgba(189, 76, 60, .18); }
.button-coral:hover { background: var(--coral-deep); }
.button-quiet { border-color: var(--line); color: var(--ink); background: rgba(255, 253, 248, .7); }
.button-dark { color: var(--white); background: var(--ink); }
.button-dark:hover { background: var(--sea); }

.hero-facts { display: flex; flex-wrap: wrap; gap: 1.5rem; }
.hero-facts > div { display: grid; gap: .12rem; padding-left: .8rem; border-left: 2px solid var(--sun); }
.hero-facts strong { font-family: var(--display); font-size: 1.25rem; line-height: 1.15; }
.hero-facts span { color: var(--muted); font-size: .75rem; }

.hero-visual { position: relative; min-height: 33rem; }
.visual-note { position: absolute; z-index: 4; color: var(--sea); font-family: var(--mono); font-size: .66rem; font-weight: 700; letter-spacing: .12em; }
.visual-note span { display: block; margin-top: .22rem; color: var(--muted); font-family: var(--body); font-size: .73rem; font-weight: 500; letter-spacing: 0; }
.note-top { top: 1.2rem; left: 0; }
.note-bottom { right: 0; bottom: 1.15rem; text-align: right; }
.ocean-orbit { position: absolute; border: 1px solid rgba(23, 107, 115, .22); border-radius: 50%; }
.orbit-one { top: 4rem; right: .7rem; width: 24rem; height: 24rem; }
.orbit-two { top: 6.3rem; right: 3rem; width: 19.5rem; height: 19.5rem; border-style: dashed; opacity: .7; }

.fish-illustration { position: absolute; top: 4.5rem; right: 1.3rem; width: min(25rem, 88%); }
.fish-illustration svg { display: block; width: 100%; overflow: visible; }
.fish-shadow { fill: rgba(20, 44, 51, .13); }
.fish-body { fill: var(--sea-bright); stroke: var(--ink); stroke-width: 3; }
.fish-fin { fill: var(--sun); stroke: var(--ink); stroke-width: 3; }
.fish-fin-two { fill: var(--coral); }
.fish-eye { fill: var(--ink); }
.fish-eye-glint { fill: var(--white); }
.fish-smile, .tentacle, .route-line { fill: none; stroke: var(--ink); stroke-linecap: round; stroke-width: 3; }
.tentacle { stroke-width: 4; }
.route-line { stroke: var(--coral); stroke-dasharray: 4 9; stroke-width: 2; }
.route-dot { fill: var(--coral); stroke: var(--white); stroke-width: 3; }

.visual-panel { position: absolute; right: -1.1rem; bottom: 3.5rem; width: min(22rem, 86%); padding: 1rem 1.2rem; border: 1px solid rgba(20, 44, 51, .38); border-radius: var(--r-md); color: var(--mist); background: rgba(14, 34, 41, .95); box-shadow: var(--shadow-float); transform: rotate(-3deg); }
.panel-row, .panel-footer { display: flex; justify-content: space-between; gap: 1rem; font-family: var(--mono); font-size: .56rem; letter-spacing: .08em; }
.panel-row { padding-bottom: .65rem; border-bottom: 1px solid rgba(228, 238, 235, .19); color: #93b7b2; }
.panel-row strong { color: #a9e2c6; font-size: .54rem; }
.panel-row i { display: inline-block; width: .38rem; height: .38rem; margin-right: .3rem; border-radius: 50%; background: #a9e2c6; box-shadow: 0 0 0 3px rgba(169, 226, 198, .12); }
.panel-score { display: grid; gap: .05rem; padding: 1rem 0 .6rem; }
.panel-score span { color: #94aaa9; font-size: .66rem; }
.panel-score strong { font-family: var(--display); font-size: 1.25rem; letter-spacing: -.03em; }
.panel-bars { display: flex; align-items: end; height: 2.5rem; gap: .4rem; padding: .25rem 0 .6rem; }
.panel-bars span { display: block; width: .55rem; height: var(--bar); border-radius: 2px 2px 0 0; background: var(--coral); }
.panel-bars span:nth-child(2n) { background: var(--sun); }
.panel-footer { padding-top: .65rem; border-top: 1px solid rgba(228, 238, 235, .19); color: #93b7b2; }

.deadline-section { color: var(--white); background: var(--coral); }
.deadline-inner { display: grid; grid-template-columns: 1fr auto auto; align-items: center; gap: 2rem; min-height: 7.8rem; }
.deadline-section .mini-label { margin-bottom: .25rem; color: #ffd6bd; }
.deadline-section h2 { margin: 0; font-size: clamp(1.35rem, 3vw, 2.25rem); }
.deadline-clock { display: grid; padding-left: 2rem; border-left: 1px solid rgba(255, 253, 248, .45); }
.deadline-clock span { color: #ffd6bd; font-size: .76rem; }
.deadline-clock strong { font-family: var(--mono); font-size: clamp(1.1rem, 2.4vw, 1.55rem); letter-spacing: .04em; }

.section-paper { background: var(--paper); }
.section-sand { background: var(--sand); }
.section-ink { color: var(--mist); background: var(--ink-deep); }

.section-heading { margin-bottom: 3.3rem; }
.heading-split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(18rem, .72fr); align-items: end; gap: 4rem; }
.section-heading h2 { margin-bottom: .7rem; font-size: clamp(2.25rem, 5vw, 4.25rem); }
.section-heading > p, .heading-split > p { max-width: 34rem; margin-bottom: .25rem; color: var(--muted); font-size: .98rem; }
.section-intro { max-width: 38rem; margin: 0; color: var(--muted); }
.light-heading .eyebrow { color: var(--sun); }
.light-heading .eyebrow span { color: var(--coral); }
.light-heading h2 { color: var(--white); }
.light-heading > p { color: #aec2bf; }

.start-layout { display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(16rem, .7fr); align-items: start; gap: 3rem; }
.action-list { display: grid; gap: 0; }
.action-item { display: grid; grid-template-columns: 3rem 1fr auto; align-items: start; gap: 1rem; padding: 1.35rem .4rem 1.35rem 0; border-top: 1px solid var(--line); }
.action-item:last-child { border-bottom: 1px solid var(--line); }
.action-item h3 { margin: 0 0 .25rem; font-size: 1.12rem; }
.action-item p { max-width: 41rem; margin: 0; color: var(--muted); font-size: .88rem; line-height: 1.7; }
.step-number { color: var(--coral); font-family: var(--mono); font-size: .8rem; font-weight: 700; }
.action-tag { padding-top: .17rem; color: var(--sea); font-family: var(--mono); font-size: .59rem; letter-spacing: .06em; text-align: right; white-space: nowrap; }
.action-primary { padding-top: 1.6rem; border-top: 3px solid var(--coral); }
.action-primary h3 { color: var(--coral-deep); }

.side-note { position: relative; padding: 2rem 1.7rem 1.5rem; border: 1px solid var(--ink); border-radius: 0 var(--r-lg) 0 var(--r-md); background: var(--mist); box-shadow: 8px 8px 0 rgba(23, 107, 115, .17); transform: rotate(1.3deg); }
.side-note::before { position: absolute; top: -.55rem; right: 2rem; width: 3.5rem; height: 1.1rem; border-right: 1px solid rgba(189, 76, 60, .5); border-left: 1px solid rgba(189, 76, 60, .5); background: rgba(244, 185, 66, .48); content: ""; transform: rotate(4deg); }
.side-note .stamp { display: inline-block; margin-bottom: 1.2rem; padding: .25rem .4rem; border: 1px solid var(--coral); color: var(--coral-deep); }
.side-note h3 { margin-bottom: .45rem; font-family: var(--display); font-size: 1.55rem; }
.side-note p { margin-bottom: 1.25rem; color: #466267; font-size: .86rem; }
.side-note-line { display: flex; justify-content: space-between; padding: .5rem 0; border-top: 1px solid rgba(23, 107, 115, .23); font-size: .76rem; }
.side-note-line strong { color: var(--sea); }

.fact-strip { display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 4rem; border-top: 2px solid var(--ink); border-bottom: 1px solid var(--line); }
.fact-strip > div { min-height: 6.3rem; padding: 1.2rem 1rem 1.15rem 0; border-right: 1px solid var(--line); }
.fact-strip > div:not(:first-child) { padding-left: 1rem; }
.fact-strip > div:last-child { border-right: 0; }
.fact-strip b, .fact-strip span { display: block; }
.fact-strip b { margin-bottom: .25rem; font-size: .78rem; }
.fact-strip span { color: var(--muted); font-size: .76rem; line-height: 1.55; }

.game-layout { display: grid; grid-template-columns: 1.1fr .9fr; align-items: center; gap: clamp(2rem, 8vw, 7rem); margin-bottom: 4.5rem; }
.game-board { padding: .8rem; border: 1px solid #6b8c89; background: #143b43; box-shadow: 10px 10px 0 rgba(241, 107, 79, .22); transform: rotate(-1.2deg); }
.board-top, .board-bottom { display: flex; justify-content: space-between; gap: 1rem; padding: .45rem .5rem; color: #9ec5bf; font-family: var(--mono); font-size: .56rem; letter-spacing: .08em; }
.board-scene { position: relative; min-height: 17rem; overflow: hidden; border: 1px solid rgba(158, 197, 191, .35); background-color: #1c6470; background-image: linear-gradient(rgba(228, 238, 235, .09) 1px, transparent 1px), linear-gradient(90deg, rgba(228, 238, 235, .09) 1px, transparent 1px); background-size: 34px 34px; }
.board-scene::after { position: absolute; right: -1rem; bottom: -3rem; width: 17rem; height: 8rem; border: 1px solid rgba(228, 238, 235, .28); border-radius: 50%; content: ""; transform: rotate(-8deg); }
.scene-food, .scene-trash, .scene-target { position: absolute; display: grid; place-items: center; }
.scene-food { width: 1.7rem; height: 1.7rem; border: 2px solid var(--sun); border-radius: 50%; color: var(--sun); font-size: 1.1rem; }
.food-a { top: 3rem; right: 5rem; }
.food-b { right: 9rem; bottom: 3.4rem; }
.scene-trash { width: 1.3rem; height: 1.65rem; border: 2px solid #bfd1cc; border-radius: 2px; color: #bfd1cc; font-size: .8rem; transform: rotate(24deg); }
.trash-a { top: 4.5rem; left: 5rem; }
.trash-b { right: 3.2rem; bottom: 4.2rem; transform: rotate(-19deg); }
.scene-target { top: 1.3rem; left: 1.6rem; color: #a8ded3; font-family: var(--mono); font-size: .57rem; letter-spacing: .08em; }
.scene-wave { position: absolute; left: -4rem; width: 24rem; height: 4rem; border-top: 2px solid rgba(228, 238, 235, .2); border-radius: 50%; transform: rotate(12deg); }
.wave-a { top: 10rem; }
.wave-b { top: 12rem; left: 6rem; transform: rotate(-9deg); }
.mini-squid { position: absolute; top: 7.7rem; left: 9rem; width: 4.5rem; height: 3.2rem; border: 2px solid var(--ink); border-radius: 55% 45% 48% 50%; background: var(--coral); transform: rotate(-16deg); }
.mini-squid::before { position: absolute; top: .8rem; left: .85rem; width: .5rem; height: .5rem; border-radius: 50%; background: var(--ink); content: ""; box-shadow: 1rem 0 0 var(--ink); }
.mini-squid i { position: absolute; bottom: -1.3rem; width: 1rem; height: 1.7rem; border-right: 2px solid var(--ink); border-radius: 50%; }
.mini-squid i:nth-of-type(1) { left: .4rem; transform: rotate(18deg); }
.mini-squid i:nth-of-type(2) { left: 1.4rem; bottom: -1.5rem; }
.mini-squid i:nth-of-type(3) { left: 2.5rem; transform: rotate(-16deg); }
.game-copy .game-badge { display: inline-block; margin-bottom: 1.1rem; padding: .3rem .6rem; border: 1px solid var(--sun); color: var(--sun); font-family: var(--mono); font-size: .63rem; letter-spacing: .08em; }
.game-copy h3 { margin-bottom: .8rem; color: var(--white); font-family: var(--display); font-size: 2.1rem; }
.game-copy > p { color: #aec2bf; font-size: .94rem; }
.versus-row { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: .8rem; margin: 1.8rem 0; padding: 1rem 0; border-top: 1px solid #365961; border-bottom: 1px solid #365961; }
.versus-row div:not(.versus-mark) { display: grid; gap: .15rem; }
.versus-row span { color: #8caaa7; font-size: .68rem; }
.versus-row strong { color: var(--white); font-size: .88rem; }
.versus-mark { display: grid; place-items: center; width: 2.2rem; height: 2.2rem; border: 1px solid var(--coral); border-radius: 50%; color: var(--coral); font-family: var(--mono); font-size: .62rem; }
.text-link { font-size: .8rem; font-weight: 700; text-decoration: none; }
.text-link:hover { text-decoration: underline; text-underline-offset: .25em; }
.light-link { color: var(--sun); }

.mode-table { border-top: 1px solid #52716f; border-bottom: 1px solid #52716f; font-size: .83rem; }
.mode-row { display: grid; grid-template-columns: .7fr 1.2fr 1.2fr; min-height: 3.3rem; align-items: center; border-top: 1px solid #365961; }
.mode-row:first-child { border-top: 0; }
.mode-row > * { padding: .55rem .7rem; }
.mode-row > :first-child { color: #8caaa7; font-family: var(--mono); font-size: .66rem; letter-spacing: .07em; }
.mode-row strong { color: var(--sun); }
.mode-head { color: #8caaa7; font-family: var(--mono); font-size: .61rem; letter-spacing: .08em; text-transform: uppercase; }
.mode-head > * { padding-top: .75rem; padding-bottom: .75rem; }

.loop-grid { display: grid; grid-template-columns: 1.22fr .2fr 1fr .2fr 1fr .2fr 1fr .2fr 1fr .2fr 1.08fr; align-items: stretch; gap: .35rem; }
.loop-card { position: relative; min-height: 14.8rem; padding: 1.15rem 1.1rem; border: 1px solid var(--line); border-radius: 0 var(--r-md) 0 var(--r-md); background: #f3f5ef; box-shadow: var(--shadow-rest); }
.loop-card-main { background: var(--mist); transform: translateY(-.8rem); }
.loop-card-end { border-color: var(--coral); background: #fff1ea; transform: translateY(.8rem); }
.loop-index { color: var(--coral-deep); font-family: var(--mono); font-size: .62rem; font-weight: 700; }
.loop-icon { margin: .55rem 0 .4rem; color: var(--sea); font-family: var(--display); font-size: 2.3rem; line-height: 1; }
.loop-card h3 { margin-bottom: .25rem; font-size: 1.1rem; }
.loop-card p { margin-bottom: .5rem; color: var(--muted); font-size: .76rem; line-height: 1.6; }
.loop-note { display: block; color: var(--sea); font-size: .65rem; font-weight: 700; line-height: 1.45; }
.loop-arrow { align-self: center; color: var(--coral); font-family: var(--mono); font-size: 1.25rem; text-align: center; }
.concept-callout { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 1.3rem; margin-top: 4rem; padding: 1.25rem 1.4rem; border-left: 4px solid var(--sun); background: var(--mist); }
.callout-label { color: var(--coral-deep); font-family: var(--mono); font-size: .66rem; font-weight: 700; letter-spacing: .1em; white-space: nowrap; }
.concept-callout p { margin: 0; font-family: var(--display); font-size: 1.06rem; }
.concept-callout span { color: var(--muted); font-size: .72rem; }

.timeline { position: relative; margin-left: 2.2rem; border-left: 1px solid #aabbb3; }
.timeline-item { position: relative; display: grid; grid-template-columns: 10rem 2rem 1fr; gap: 1.2rem; padding: 0 0 3.1rem 1.8rem; }
.timeline-item:last-child { padding-bottom: 0; }
.timeline-date { padding-top: .15rem; text-align: right; }
.timeline-date b, .timeline-date span { display: block; }
.timeline-date b { font-family: var(--mono); font-size: .72rem; letter-spacing: .04em; }
.timeline-date span { color: var(--muted); font-size: .68rem; }
.timeline-marker { position: relative; display: grid; place-items: center; width: 2rem; height: 2rem; margin-left: -.1rem; border: 1px solid var(--sea); border-radius: 50%; color: var(--sea); background: var(--sand); font-family: var(--mono); font-size: .59rem; font-weight: 700; }
.timeline-marker::before { position: absolute; top: -.4rem; left: .82rem; width: .3rem; height: .3rem; border-radius: 50%; background: var(--coral); content: ""; }
.is-now .timeline-marker { color: var(--white); background: var(--coral); box-shadow: 0 0 0 6px rgba(241, 107, 79, .14); }
.is-now .timeline-marker::before { background: var(--sun); }
.timeline-content { padding: 0 0 0 1.1rem; border-left: 1px solid rgba(170, 187, 179, .6); }
.timeline-content h3 { margin-bottom: .35rem; font-family: var(--display); font-size: 1.65rem; }
.timeline-content p { max-width: 47rem; margin-bottom: .7rem; color: #4f6467; font-size: .87rem; }
.timeline-content ul { display: grid; grid-template-columns: repeat(3, 1fr); gap: .4rem 1.2rem; padding-left: 1rem; margin: 0; color: var(--muted); font-size: .73rem; line-height: 1.6; }
.timeline-content li::marker { color: var(--coral); }
.timeline-tag { display: inline-block; margin-bottom: .45rem; padding: .15rem .4rem; color: var(--coral-deep); background: #ffe4d4; font-family: var(--mono); font-size: .58rem; font-weight: 700; letter-spacing: .04em; }
.tag-coral { color: var(--white); background: var(--coral); }

.role-board { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 1rem; margin-top: 4.8rem; padding-top: 2rem; border-top: 2px solid var(--ink); }
.role-intro { padding-right: 1.5rem; }
.role-intro h3 { margin-bottom: .25rem; font-family: var(--display); font-size: 1.8rem; }
.role-intro p:last-child { margin: 0; color: var(--muted); font-size: .8rem; }
.role-card { display: grid; grid-template-columns: 2.5rem 1fr; gap: .8rem; padding: 1.25rem; border: 1px solid var(--line); background: var(--paper); }
.role-observe { border-top: 4px solid var(--sea); }
.role-build { border-top: 4px solid var(--coral); }
.role-number { color: var(--coral-deep); font-family: var(--display); font-size: 1.8rem; line-height: 1; }
.role-card h4 { margin-bottom: .25rem; font-size: 1rem; }
.role-card p { margin-bottom: .55rem; color: var(--muted); font-size: .75rem; line-height: 1.6; }
.role-card small { color: var(--sea); font-size: .66rem; font-weight: 700; }

.rules-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; margin-bottom: 3rem; background: #46676a; }
.rule-column { padding: 2rem 2.2rem 1.6rem; }
.rule-yes { background: #183f45; }
.rule-no { background: #2a3033; }
.rule-heading { display: flex; align-items: center; gap: .8rem; padding-bottom: 1rem; border-bottom: 1px solid rgba(228, 238, 235, .2); }
.rule-heading h3 { margin: 0; color: var(--white); font-family: var(--display); font-size: 1.6rem; }
.rule-symbol { display: grid; place-items: center; width: 2rem; height: 2rem; border-radius: 50%; font-family: var(--mono); font-weight: 700; }
.rule-yes .rule-symbol { color: #1c5442; background: #a9e2c6; }
.rule-no .rule-symbol { color: #6c2f2a; background: #ffae8f; }
.rule-column ul { display: grid; gap: .85rem; margin: 1.3rem 0 0; padding-left: 1.1rem; color: #bcd0cb; font-size: .78rem; line-height: 1.65; }
.rule-column li::marker { color: var(--sun); }
.rule-no li::marker { color: #ffae8f; }
.rule-column strong { color: var(--white); }
.rule-column code { border-color: rgba(169, 226, 198, .3); color: #b8ebd0; background: rgba(169, 226, 198, .08); }
.file-checker { display: grid; grid-template-columns: auto 1fr; align-items: center; gap: 2rem; padding: 1rem 1.3rem; border: 1px solid #547376; background: rgba(23, 107, 115, .18); }
.file-checker .mini-label { margin: 0 0 .15rem; color: var(--sun); }
.file-checker h3 { margin: 0; color: var(--white); font-size: 1rem; }
.file-chips { display: flex; flex-wrap: wrap; align-items: center; justify-content: flex-end; gap: .45rem; color: #9bb8b4; font-family: var(--mono); font-size: .66rem; }
.file-chips code { color: #c7eed5; background: rgba(169, 226, 198, .1); }
.file-chips strong { color: var(--sun); }
.file-chips b { color: #a9e2c6; }

.match-layout { display: grid; grid-template-columns: 1.15fr .72fr; gap: 4rem; align-items: start; }
.schedule { border-top: 2px solid var(--ink); }
.schedule-row { display: grid; grid-template-columns: 8.2rem 1fr auto; align-items: center; gap: 1rem; min-height: 4.5rem; border-bottom: 1px solid var(--line); }
.schedule-row time { color: var(--coral-deep); font-family: var(--mono); font-size: .72rem; font-weight: 700; }
.schedule-row div { display: grid; }
.schedule-row strong { font-size: .9rem; }
.schedule-row span { color: var(--muted); font-size: .72rem; }
.schedule-row > b { padding: .2rem .4rem; border: 1px solid var(--line); color: var(--sea); font-family: var(--mono); font-size: .58rem; letter-spacing: .05em; }
.schedule-highlight { position: relative; background: #e6f0ed; }
.schedule-highlight::before { position: absolute; top: 0; bottom: 0; left: -.6rem; width: 3px; background: var(--coral); content: ""; }
.schedule-highlight > b { border-color: var(--coral); color: var(--coral-deep); }
.schedule-last { border-bottom: 2px solid var(--ink); }
.match-aside { position: relative; padding: 2rem 1.7rem 1.5rem; border: 1px solid var(--ink); background: var(--mist); }
.aside-burst { position: absolute; top: -1.35rem; right: 1.5rem; display: grid; place-items: center; width: 4.7rem; height: 4.7rem; border: 2px solid var(--ink); border-radius: 50%; color: var(--white); background: var(--coral); font-family: var(--mono); font-size: .7rem; font-weight: 700; line-height: 1.1; text-align: center; transform: rotate(9deg); }
.match-aside h3 { margin: 1.2rem 0 .5rem; font-family: var(--display); font-size: 1.55rem; }
.match-aside p { margin-bottom: 1.4rem; color: #466267; font-size: .82rem; }
.bracket { display: grid; grid-template-columns: auto 1fr auto 1fr auto; align-items: center; gap: .35rem; color: var(--sea); font-family: var(--mono); font-size: .58rem; text-align: center; }
.bracket i { display: block; height: 1px; background: var(--sea); }
.bracket span { white-space: nowrap; }

.checklist-block { margin-top: 5rem; padding: 2rem; border-top: 2px solid var(--ink); background: #f0eee4; }
.checklist-heading { display: flex; align-items: end; justify-content: space-between; gap: 1rem; margin-bottom: 1.4rem; }
.checklist-heading .eyebrow { margin-bottom: .35rem; }
.checklist-heading h3 { margin: 0; font-family: var(--display); font-size: 1.8rem; }
#check-progress { color: var(--sea); font-family: var(--mono); font-size: .75rem; font-weight: 700; }
.checklist { display: grid; grid-template-columns: 1fr 1fr; gap: .65rem 2.5rem; }
.check-item { display: flex; align-items: flex-start; gap: .65rem; cursor: pointer; color: #466267; font-size: .78rem; line-height: 1.55; }
.check-item input { position: absolute; width: 1px; height: 1px; opacity: 0; }
.check-box { position: relative; flex: 0 0 1.1rem; width: 1.1rem; height: 1.1rem; margin-top: .15rem; border: 1px solid var(--sea); background: var(--paper); }
.check-item input:focus-visible + .check-box { outline: 3px solid rgba(241, 107, 79, .35); outline-offset: 2px; }
.check-item input:checked + .check-box { border-color: var(--sea); background: var(--sea); }
.check-item input:checked + .check-box::after { position: absolute; top: .05rem; left: .3rem; width: .35rem; height: .65rem; border-right: 2px solid var(--white); border-bottom: 2px solid var(--white); content: ""; transform: rotate(42deg); }
.check-item input:checked ~ span:last-child { color: var(--muted); text-decoration: line-through; text-decoration-color: var(--coral); }
.reset-button { margin-top: 1.4rem; padding: .35rem .55rem; border: 0; color: var(--muted); background: transparent; cursor: pointer; font-size: .68rem; text-decoration: underline; text-underline-offset: .2em; }

.rank-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.rank-card { padding: 1.5rem 1.4rem 1.2rem; border-top: 5px solid var(--sea); background: var(--paper); }
.rank-card:nth-child(2) { border-color: var(--sun); }
.rank-card:nth-child(3) { border-color: var(--coral); }
.rank-card span { color: var(--muted); font-family: var(--mono); font-size: .62rem; }
.rank-card strong { display: block; margin: .3rem 0 .35rem; font-family: var(--display); font-size: 1.65rem; }
.rank-card p { min-height: 3.2rem; margin-bottom: 1.2rem; color: var(--muted); font-size: .78rem; line-height: 1.6; }
.rank-meter { height: 5px; background: var(--mist); }
.rank-meter i { display: block; height: 100%; background: var(--sea); }
.rank-card:nth-child(2) .rank-meter i { background: var(--sun); }
.rank-card:nth-child(3) .rank-meter i { background: var(--coral); }
.race-plan { display: grid; grid-template-columns: .7fr 1.3fr; gap: 3rem; margin-top: 3rem; padding: 2rem 0 0; border-top: 1px solid var(--line); }
.race-plan-title .stamp { display: inline-block; margin-bottom: .7rem; padding: .2rem .4rem; border: 1px solid var(--coral); color: var(--coral-deep); }
.race-plan-title h3 { margin-bottom: .3rem; font-family: var(--display); font-size: 1.6rem; }
.race-plan-title p { margin: 0; color: var(--muted); font-size: .75rem; }
.race-steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: .7rem; }
.race-steps div { display: grid; gap: .2rem; padding: .75rem; border-left: 3px solid var(--sea); background: var(--paper); }
.race-steps div:nth-child(2n) { border-color: var(--sun); }
.race-steps div:nth-child(3n) { border-color: var(--coral); }
.race-steps b { color: var(--coral-deep); font-family: var(--mono); font-size: .7rem; }
.race-steps span { color: var(--muted); font-size: .7rem; line-height: 1.5; }

.next-stage { display: grid; grid-template-columns: .7fr 1fr auto; align-items: center; gap: 2rem; margin-top: 3rem; padding: 1.25rem 1.4rem; border-left: 4px solid var(--sea); background: var(--mist); }
.next-stage .mini-label { margin: 0 0 .2rem; }
.next-stage h3 { margin: 0; font-family: var(--display); font-size: 1.35rem; }
.next-stage > p { margin: 0; color: var(--muted); font-size: .78rem; line-height: 1.65; }
.next-stage-dates { display: flex; gap: 1.2rem; }
.next-stage-dates b { display: grid; gap: .1rem; color: var(--coral-deep); font-family: var(--mono); font-size: .85rem; }
.next-stage-dates small { color: var(--muted); font-family: var(--body); font-size: .64rem; font-weight: 400; line-height: 1.4; white-space: nowrap; }

.quiz-layout { display: grid; grid-template-columns: .7fr 1.3fr; gap: 4rem; align-items: start; }
.quiz-intro h2 { margin-bottom: .7rem; font-size: clamp(2.15rem, 4vw, 3.4rem); }
.quiz-intro > p:not(.eyebrow) { color: var(--muted); font-size: .86rem; }
.quiz-score { display: inline-flex; align-items: center; justify-content: center; width: 5.5rem; height: 5.5rem; margin-top: 1.2rem; border: 1px solid var(--coral); border-radius: 50%; color: var(--coral-deep); font-family: var(--mono); font-size: .8rem; font-weight: 700; }
.quiz-box { display: grid; gap: 1rem; }
.quiz-question { padding: 1.25rem 1.3rem; border-left: 3px solid var(--sea); background: #f0f2eb; }
.quiz-question:nth-child(2n) { border-color: var(--sun); }
.quiz-question:nth-child(3n) { border-color: var(--coral); }
.quiz-question > span { color: var(--coral-deep); font-family: var(--mono); font-size: .65rem; font-weight: 700; }
.quiz-question h3 { margin: .25rem 0 .7rem; font-size: .98rem; }
.quiz-options { display: flex; flex-wrap: wrap; gap: .45rem; }
.quiz-options button { padding: .42rem .6rem; border: 1px solid var(--line); border-radius: var(--r-sm); color: var(--ink); background: var(--paper); cursor: pointer; font-size: .72rem; text-align: left; transition: border-color .2s ease, color .2s ease, background .2s ease; }
.quiz-options button:hover { border-color: var(--sea); color: var(--sea); }
.quiz-question.is-correct .quiz-options button[data-selected="true"] { border-color: #4d9c77; color: #276d51; background: #dff3e5; }
.quiz-question.is-wrong .quiz-options button[data-selected="true"] { border-color: var(--coral); color: var(--coral-deep); background: #ffe5d9; }
.quiz-question .quiz-feedback { display: none; margin: .55rem 0 0; color: var(--muted); font-size: .7rem; }
.quiz-question.is-correct .quiz-feedback, .quiz-question.is-wrong .quiz-feedback { display: block; }
.quiz-question.is-correct .quiz-feedback { color: #276d51; }
.quiz-question.is-wrong .quiz-feedback { color: var(--coral-deep); }

.faq-list { border-top: 2px solid var(--ink); }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list summary { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 1.1rem .2rem; cursor: pointer; font-family: var(--display); font-size: 1.1rem; list-style: none; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { color: var(--coral); content: "+"; font-family: var(--mono); font-size: 1.2rem; font-weight: 400; }
.faq-list details[open] summary::after { content: "−"; }
.faq-list details[open] summary { color: var(--coral-deep); }
.faq-list details p { max-width: 52rem; margin: -.25rem 2rem 1.25rem .2rem; color: var(--muted); font-size: .82rem; }
.contact-strip { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 1rem 2rem; margin-top: 3rem; padding: 1.2rem 1.4rem; border-left: 4px solid var(--sea); background: var(--mist); }
.contact-strip > div { display: grid; gap: .1rem; }
.contact-strip .mini-label { margin: 0; color: var(--sea); }
.contact-strip strong { font-size: .88rem; }
.contact-strip div:nth-child(2) { display: flex; flex-wrap: wrap; gap: .8rem; color: var(--sea); font-family: var(--mono); font-size: .7rem; }
.contact-strip a { color: var(--sea); text-decoration: none; }
.contact-strip a:hover { text-decoration: underline; text-underline-offset: .2em; }
.contact-strip > span:last-child { color: var(--muted); font-size: .7rem; }

.sw-update-toast { position: fixed; z-index: 90; right: 1.1rem; bottom: 1.1rem; display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 1.1rem; width: min(420px, calc(100vw - 2.2rem)); padding: 1rem 1.1rem 1rem 1.2rem; border: 1px solid rgba(244, 185, 66, .6); border-radius: var(--r-md); color: var(--mist); background: rgba(14, 34, 41, .97); box-shadow: var(--shadow-float); }
.sw-update-copy { min-width: 0; }
.sw-update-copy .mini-label { margin-bottom: .22rem; color: var(--sun); }
.sw-update-copy strong { display: block; color: var(--white); font-family: var(--display); font-size: 1.05rem; line-height: 1.3; }
.sw-update-copy p { margin: .18rem 0 0; color: #b8ceca; font-size: .72rem; line-height: 1.5; }
.sw-update-actions { display: flex; align-items: center; gap: .4rem; }
.sw-update-actions button { border: 0; border-radius: var(--r-sm); cursor: pointer; font-size: .72rem; font-weight: 700; white-space: nowrap; }
.sw-update-now { padding: .55rem .7rem; color: var(--ink-deep); background: var(--sun); }
.sw-update-now:hover { background: #ffd171; }
.sw-update-now:disabled { cursor: wait; opacity: .7; }
.sw-update-later { padding: .45rem .35rem; color: #a8c0bc; background: transparent; }
.sw-update-later:hover { color: var(--white); }

.official-lab { position: relative; overflow: hidden; }
.official-lab::after { position: absolute; top: 7rem; right: -7rem; width: 20rem; height: 20rem; border: 1px solid rgba(244, 185, 66, .16); border-radius: 50%; content: ""; pointer-events: none; }
.official-alert, .version-gate { position: relative; z-index: 1; display: grid; grid-template-columns: .95fr 1.05fr; gap: 1.5rem; align-items: center; margin: -0.45rem 0 1rem; padding: 1rem 1.2rem; border: 1px solid #46676a; border-left: 4px solid var(--sun); background: #102a31; }
.official-alert strong, .version-gate strong { display: block; margin-top: .22rem; color: var(--white); font-family: var(--display); font-size: 1.05rem; line-height: 1.35; }
.official-alert p, .version-gate p { margin: 0; color: #b8ceca; font-size: .76rem; line-height: 1.7; }
.official-alert a, .version-gate a { color: var(--sun); text-underline-offset: .18em; }
.version-gate { margin: 0 0 2rem; border-color: rgba(241, 107, 79, .6); border-left-color: var(--coral); background: #17343b; }
.version-gate .mini-label { color: var(--coral); }

.lab-track-grid { position: relative; z-index: 1; display: grid; grid-template-columns: 1.1fr 1fr 1fr; gap: 1rem; margin-bottom: 3rem; }
.lab-track { display: flex; min-height: 17rem; flex-direction: column; padding: 1.35rem 1.25rem 1.15rem; border: 1px solid #46676a; border-top: 4px solid var(--sea); background: #102d34; }
.lab-track-main { grid-column: span 1; border-top-color: var(--coral); background: #234b50; }
.lab-track-supervised { border-top-color: var(--sun); }
.lab-track-reinforce { border-top-color: #8cb9b1; }
.lab-track-top { display: flex; align-items: center; justify-content: space-between; gap: .8rem; color: #8eaaa7; font-family: var(--mono); font-size: .62rem; letter-spacing: .05em; }
.lab-track-top a { color: var(--sun); font-family: var(--body); font-size: .7rem; letter-spacing: 0; text-decoration: none; }
.lab-track-top a:hover { color: var(--white); text-decoration: underline; text-underline-offset: .2em; }
.lab-track h3 { margin: 1.1rem 0 .55rem; color: var(--white); font-family: var(--display); font-size: 1.5rem; line-height: 1.3; }
.lab-track p { margin: 0; color: #b8ceca; font-size: .78rem; line-height: 1.7; }
.lab-track ul { display: grid; gap: .42rem; margin: auto 0 0; padding: 1rem 0 0 1.1rem; color: #d7e4df; font-size: .72rem; line-height: 1.55; }
.lab-track li::marker { color: var(--coral); }
.track-tag { display: inline-block; align-self: flex-start; margin-top: auto; padding: .24rem .45rem; border: 1px solid #46676a; color: var(--sun); font-family: var(--mono); font-size: .6rem; }
.lab-track-supervised .track-tag { border-color: rgba(244, 185, 66, .5); }
.lab-track-reinforce .track-tag { color: #b8ceca; }

.lab-map-head { display: grid; grid-template-columns: .9fr 1.1fr; gap: 2rem; align-items: end; margin-bottom: 1.2rem; }
.lab-map-head h3 { margin: .25rem 0 0; color: var(--white); font-family: var(--display); font-size: 1.7rem; }
.lab-map-head p { margin: 0; color: #a8c0bc; font-size: .78rem; line-height: 1.7; }
.lab-step-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: .8rem; }
.lab-step { position: relative; display: flex; min-height: 17.5rem; flex-direction: column; padding: 1.15rem 1.1rem 1rem; border: 1px solid #46676a; background: #0f2d34; }
.lab-step:nth-child(2n) { border-top: 3px solid var(--sun); }
.lab-step:nth-child(3n) { border-top: 3px solid var(--coral); }
.lab-step-number { display: inline-flex; width: 2rem; height: 2rem; align-items: center; justify-content: center; margin-bottom: .8rem; border: 1px solid var(--coral); border-radius: 50%; color: var(--sun); font-family: var(--mono); font-size: .68rem; }
.lab-step h4 { margin: 0 0 .45rem; color: var(--white); font-family: var(--display); font-size: 1.12rem; line-height: 1.35; }
.lab-step p { margin: 0; color: #b8ceca; font-size: .74rem; line-height: 1.7; }
.lab-step code { color: var(--sun); }
.lab-sources { display: flex; flex-wrap: wrap; gap: .35rem .6rem; margin-top: auto; padding-top: 1rem; }
.lab-sources a { color: var(--sun); font-size: .67rem; text-decoration: none; text-underline-offset: .2em; }
.lab-sources a:hover { color: var(--white); text-decoration: underline; }
.lab-proof { display: block; margin-top: .7rem; padding-top: .65rem; border-top: 1px solid #31545a; color: #8eaaa7; font-family: var(--mono); font-size: .59rem; line-height: 1.5; }

.lab-workshop { display: grid; grid-template-columns: .75fr 1.25fr; gap: 2rem; align-items: center; margin-top: 2rem; padding: 1.35rem 1.4rem; border-left: 4px solid var(--coral); background: #234b50; }
.lab-workshop h3 { margin: .25rem 0 .45rem; color: var(--white); font-family: var(--display); font-size: 1.35rem; }
.lab-workshop p { margin: 0; color: #b8ceca; font-size: .75rem; line-height: 1.65; }
.lab-workshop-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: .6rem; }
.lab-workshop-list div { display: grid; gap: .3rem; min-height: 5.7rem; padding: .8rem; border: 1px solid #46676a; background: #102d34; }
.lab-workshop-list div:nth-child(2) { border-color: rgba(244, 185, 66, .55); }
.lab-workshop-list div:nth-child(3) { border-color: rgba(241, 107, 79, .65); }
.lab-workshop-list b { color: var(--sun); font-family: var(--mono); font-size: .7rem; }
.lab-workshop-list span { color: #b8ceca; font-size: .68rem; line-height: 1.55; }

.official-slides { display: grid; grid-template-columns: .75fr 1.25fr; gap: 2rem; align-items: center; margin-top: 1rem; padding: 1.2rem 1.4rem; border: 1px solid #46676a; background: #102d34; }
.official-slides h3 { margin: .25rem 0 .35rem; color: var(--white); font-family: var(--display); font-size: 1.2rem; }
.official-slides p { margin: 0; color: #a8c0bc; font-size: .72rem; line-height: 1.6; }
.official-slide-links { display: grid; grid-template-columns: repeat(6, 1fr); gap: .45rem; }
.official-slide-links a { display: grid; min-height: 4rem; align-content: center; justify-items: center; gap: .18rem; border: 1px solid #46676a; color: var(--mist); background: #15343b; text-decoration: none; transition: border-color .2s ease, color .2s ease, transform .2s ease; }
.official-slide-links a:hover { border-color: var(--sun); color: var(--sun); transform: translateY(-2px); }
.official-slide-links b { color: var(--sun); font-family: var(--mono); font-size: .82rem; }
.official-slide-links span { color: #8eaaa7; font-size: .62rem; }
.download-strip { display: flex; flex-wrap: wrap; align-items: center; gap: .6rem 1rem; margin-top: 1rem; padding: .85rem 0 0; border-top: 1px solid #46676a; color: #8eaaa7; font-family: var(--mono); font-size: .62rem; }
.download-strip > span { color: var(--coral); }
.download-strip a { color: var(--sun); text-decoration: none; }
.download-strip a:hover { color: var(--white); text-decoration: underline; text-underline-offset: .2em; }

.resource-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.resource-card { position: relative; display: flex; min-height: 12rem; flex-direction: column; padding: 1.35rem 1.25rem 1.1rem; border: 1px solid #46676a; border-radius: 0 var(--r-md) 0 var(--r-md); color: var(--mist); background: #15333a; text-decoration: none; transition: border-color .2s ease, transform .2s ease, background .2s ease; }
.resource-card:hover { border-color: var(--sun); background: #1a4148; transform: translateY(-4px); }
.resource-card.resource-feature { grid-column: span 2; min-height: 13rem; border-color: var(--coral); background: #234b50; }
.resource-label { margin-bottom: .7rem; color: var(--sun); font-size: .61rem; }
.resource-card h3 { max-width: 18ch; margin-bottom: .45rem; color: var(--white); font-family: var(--display); font-size: 1.4rem; line-height: 1.3; }
.resource-card p { max-width: 34ch; margin: 0; color: #a8c0bc; font-size: .76rem; line-height: 1.6; }
.resource-arrow { position: absolute; right: 1.1rem; bottom: .75rem; color: var(--coral); font-family: var(--mono); font-size: 1.1rem; }
.source-note { display: flex; flex-wrap: wrap; justify-content: space-between; gap: .8rem; margin-top: 3rem; padding-top: 1rem; border-top: 1px solid #46676a; color: #8eaaa7; font-family: var(--mono); font-size: .62rem; }

.site-footer { color: #a8c0bc; background: #0a1b20; font-size: .72rem; }
.footer-inner { display: flex; align-items: center; justify-content: space-between; min-height: 5rem; gap: 1rem; }
.footer-inner div { display: flex; align-items: center; flex-wrap: wrap; gap: .9rem 1.2rem; }
.footer-inner strong { color: var(--white); font-family: var(--mono); letter-spacing: .08em; }
.footer-inner a { color: var(--sun); text-decoration: none; }
.footer-inner a:hover { text-decoration: underline; text-underline-offset: .2em; }

@media (max-width: 1050px) {
  .site-nav a { padding-inline: .45rem; font-size: .78rem; }
  .hero-grid { gap: 2rem; }
  .loop-grid { grid-template-columns: repeat(3, 1fr); gap: 1rem; }
  .loop-arrow { display: none; }
  .loop-card-main, .loop-card-end { transform: none; }
  .loop-card:nth-of-type(1) { grid-column: span 1; }
  .loop-card { min-height: 13rem; }
}

@media (max-width: 820px) {
  .shell { width: min(100% - 2rem, 680px); }
  .notice-date { display: none; }
  .header-inner { min-height: 4.2rem; }
  .menu-toggle { display: block; padding: .4rem .55rem; border: 1px solid var(--line); border-radius: var(--r-sm); color: var(--ink); background: transparent; cursor: pointer; font-size: .72rem; }
  .site-nav { position: absolute; top: 100%; right: 1rem; left: 1rem; display: none; flex-direction: column; align-items: stretch; padding: .6rem; border: 1px solid var(--line); background: var(--paper); box-shadow: var(--shadow-float); }
  .site-nav.is-open { display: flex; }
  .site-nav a, .site-nav .nav-cta { margin: 0; padding: .65rem .7rem; border: 0; border-left: 3px solid transparent; }
  .site-nav a:hover, .site-nav a.is-active { border-left-color: var(--coral); background: var(--sand); }
  .hero { min-height: 0; padding-top: 4.5rem; }
  .hero-grid, .start-layout, .game-layout, .match-layout, .quiz-layout, .race-plan { grid-template-columns: 1fr; }
  .hero-copy { max-width: 40rem; }
  .hero-visual { min-height: 26rem; max-width: 34rem; margin: 0 auto; width: 100%; }
  .deadline-inner { grid-template-columns: 1fr auto; gap: .7rem 1.5rem; padding: 1.25rem 0; }
  .deadline-inner .button { grid-column: 1 / -1; justify-self: start; }
  .deadline-clock { padding-left: 0; border-left: 0; }
  .heading-split { grid-template-columns: 1fr; gap: 1rem; }
  .section-heading { margin-bottom: 2.4rem; }
  .fact-strip { grid-template-columns: 1fr 1fr; }
  .fact-strip > div:nth-child(2) { border-right: 0; }
  .fact-strip > div:nth-child(n+3) { border-top: 1px solid var(--line); }
  .fact-strip > div:nth-child(3) { padding-left: 0; }
  .game-layout { gap: 2.5rem; }
  .loop-grid { grid-template-columns: 1fr 1fr; }
  .concept-callout { grid-template-columns: auto 1fr; }
  .concept-callout span { grid-column: 2; }
  .timeline-item { grid-template-columns: 7.7rem 2rem 1fr; gap: .8rem; padding-left: 1rem; }
  .timeline-content { padding-left: .8rem; }
  .timeline-content ul { grid-template-columns: 1fr; }
  .role-board { grid-template-columns: 1fr 1fr; }
  .role-intro { grid-column: 1 / -1; padding-right: 0; }
  .rules-grid { grid-template-columns: 1fr; }
  .file-checker { grid-template-columns: 1fr; gap: .8rem; }
  .file-chips { justify-content: flex-start; }
  .checklist { grid-template-columns: 1fr; }
  .rank-grid, .resource-grid { grid-template-columns: 1fr 1fr; }
  .resource-card.resource-feature { grid-column: span 2; }
  .official-alert, .version-gate, .lab-map-head, .lab-workshop, .official-slides { grid-template-columns: 1fr; }
  .lab-track-grid { grid-template-columns: 1fr 1fr; }
  .lab-track-main { grid-column: 1 / -1; }
  .lab-step-grid { grid-template-columns: 1fr 1fr; }
  .official-slide-links { grid-template-columns: repeat(3, 1fr); }
  .next-stage { grid-template-columns: 1fr 1fr; gap: 1rem; }
  .next-stage > p { grid-column: 1 / -1; grid-row: 2; }
  .next-stage-dates { grid-column: 2; grid-row: 1; justify-content: flex-end; }
}

@media (max-width: 560px) {
  .shell { width: min(100% - 1.4rem, 430px); }
  .section { padding: 4.5rem 0; }
  h1 { font-size: clamp(2.8rem, 16vw, 4.5rem); }
  .hero-lead { font-size: .95rem; }
  .hero-facts { gap: 1rem; }
  .hero-facts > div { padding-left: .55rem; }
  .hero-visual { min-height: 22rem; }
  .orbit-one { top: 3rem; right: 0; width: 19rem; height: 19rem; }
  .orbit-two { top: 4.8rem; right: 1.8rem; width: 15.5rem; height: 15.5rem; }
  .fish-illustration { top: 3.3rem; right: .1rem; width: 20rem; }
  .visual-panel { right: -.2rem; bottom: 2.5rem; width: 17.5rem; padding: .8rem; }
  .panel-score strong { font-size: 1rem; }
  .note-top { top: .2rem; }
  .note-bottom { bottom: .2rem; }
  .deadline-inner { display: block; }
  .deadline-clock { margin: .8rem 0; }
  .deadline-inner .button { display: inline-flex; }
  .action-item { grid-template-columns: 2.3rem 1fr; gap: .65rem; }
  .action-tag { grid-column: 2; padding: 0; text-align: left; }
  .fact-strip { grid-template-columns: 1fr; }
  .fact-strip > div, .fact-strip > div:not(:first-child) { min-height: auto; padding: .9rem 0; border-right: 0; }
  .fact-strip > div:nth-child(n+2) { border-top: 1px solid var(--line); }
  .board-scene { min-height: 13rem; }
  .mini-squid { top: 6rem; left: 6rem; }
  .mode-row { grid-template-columns: .7fr 1.15fr 1.15fr; font-size: .72rem; }
  .mode-row > * { padding: .4rem; }
  .loop-grid, .rank-grid, .resource-grid, .role-board { grid-template-columns: 1fr; }
  .resource-card.resource-feature { grid-column: auto; }
  .role-intro { grid-column: auto; }
  .timeline { margin-left: 0; border-left: 0; }
  .timeline-item { grid-template-columns: 1fr 2rem; gap: .8rem; padding: 0 0 2.4rem; }
  .timeline-date { grid-column: 1; grid-row: 1; text-align: left; }
  .timeline-marker { grid-column: 2; grid-row: 1; justify-self: end; }
  .timeline-content { grid-column: 1 / -1; grid-row: 2; padding: 1rem 0 0; border-top: 1px solid var(--line); border-left: 0; }
  .timeline-content h3 { font-size: 1.4rem; }
  .match-layout { gap: 2.5rem; }
  .schedule-row { grid-template-columns: 1fr auto; gap: .5rem; padding: .7rem 0; }
  .schedule-row time { grid-column: 1 / -1; }
  .schedule-row > b { grid-column: 2; grid-row: 2; }
  .schedule-row div { grid-column: 1; grid-row: 2; }
  .checklist-block { padding: 1.2rem; }
  .checklist-heading { align-items: start; flex-direction: column; }
  .race-steps { grid-template-columns: 1fr 1fr; }
  .quiz-layout { gap: 2rem; }
  .quiz-options { display: grid; }
  .quiz-options button { width: 100%; }
  .contact-strip { align-items: flex-start; flex-direction: column; }
  .source-note, .footer-inner { align-items: flex-start; flex-direction: column; }
  .lab-track-grid, .lab-step-grid { grid-template-columns: 1fr; }
  .lab-track-main { grid-column: auto; }
  .lab-workshop, .official-slides { padding: 1.1rem; }
  .lab-workshop-list { grid-template-columns: 1fr; }
  .official-slide-links { grid-template-columns: repeat(3, 1fr); }
  .download-strip { align-items: flex-start; flex-direction: column; gap: .45rem; }
  .next-stage { display: block; }
  .next-stage > p { margin: .8rem 0; }
  .next-stage-dates { justify-content: flex-start; }
  .next-stage-dates small { white-space: normal; }
  .sw-update-toast { right: auto; bottom: .8rem; left: 50%; grid-template-columns: 1fr; gap: .7rem; padding: .9rem 1rem; transform: translateX(-50%); }
  .sw-update-actions { justify-content: flex-end; }
}

@media print {
  .notice-bar, .site-header, .hero-visual, .hero-actions, .deadline-section, .quiz-layout, .site-footer, .reset-button { display: none !important; }
  .section { padding: 1.4rem 0; }
  .section-ink { color: #000; background: #fff; }
  .light-heading h2, .rule-heading h3, .rule-column strong { color: #000; }
  .light-heading > p, .rule-column ul, .file-chips { color: #222; }
  .rules-grid { grid-template-columns: 1fr 1fr; background: #ddd; }
  .rule-yes, .rule-no, .resource-card { color: #000; background: #fff; }
  .resource-grid { grid-template-columns: repeat(3, 1fr); }
  a { text-decoration: none; }
}