:root {
  --bg: #0a0d16;
  --card: #151b2e;
  --card2: #1b2340;
  --line: #2a3557;
  --text: #e8ecf8;
  --muted: #8d97b5;
  --accent: #ff4d1a;
  --accent2: #ffb11a;
  --blue: #2fa8ff;
  --win: #2ee59d;
  --lose: #ff5d7a;
  --gold: #ffd34d;
  --bronze: #e09a5a;
  --radius: 14px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 70px; }

body {
  margin: 0;
  font-family: "Noto Sans TC", "Microsoft JhengHei", system-ui, sans-serif;
  background: radial-gradient(1200px 600px at 80% -10%, #1d2a5a55, transparent), var(--bg);
  color: var(--text);
  line-height: 1.6;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: clamp(460px, 52vw, 720px);
  padding: 56px 20px 44px;
  text-align: center;
  background: #0a0d16;
  border-bottom: 1px solid var(--line);
}
.hero-photo {
  position: absolute;
  inset: -4%;
  background:
    linear-gradient(180deg, rgba(10, 13, 22, 0.28) 0%, rgba(10, 13, 22, 0.38) 58%, rgba(10, 13, 22, 0.9) 100%),
    url("hero-bg.jpg") center 42% / cover no-repeat;
  transform-origin: center center;
  animation: goShootPulse 6s ease-in-out infinite alternate;
  will-change: transform, filter;
}
@keyframes goShootPulse {
  0% { transform: scale(1); filter: brightness(0.95) saturate(1.05); }
  50% { transform: scale(1.035); filter: brightness(1.12) saturate(1.25); }
  100% { transform: scale(1.06); filter: brightness(1.06) saturate(1.18); }
}
.spark-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}
.orbit-layer {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  z-index: 1;
}
.orbit-ring {
  position: absolute;
  left: 50%;
  top: 50%;
  width: min(460px, 72vw);
  height: min(460px, 72vw);
  border-radius: 9999px;
  border: 1px dashed rgba(255, 158, 0, 0.28);
  animation: spinSlow 24s linear infinite;
}
.orbit-ring.blue {
  width: min(340px, 52vw);
  height: min(340px, 52vw);
  border-color: rgba(0, 212, 255, 0.28);
  animation-name: spinSlowReverse;
  animation-duration: 18s;
}
@keyframes spinSlow {
  from { transform: translate(-50%, -50%) rotate(0deg); }
  to { transform: translate(-50%, -50%) rotate(360deg); }
}
@keyframes spinSlowReverse {
  from { transform: translate(-50%, -50%) rotate(360deg); }
  to { transform: translate(-50%, -50%) rotate(0deg); }
}
@media (prefers-reduced-motion: reduce) {
  .hero-photo, .orbit-ring, .go-shoot { animation: none; }
}
.hero-bg { display: none; }
.ring {
  position: absolute;
  border-radius: 50%;
  border: 2px solid transparent;
  border-top-color: var(--accent);
  border-right-color: var(--accent2);
  opacity: .35;
  animation: spin 6s linear infinite;
}
.r1 { width: 420px; height: 420px; top: -120px; right: -100px; }
.r2 { width: 260px; height: 260px; top: -40px; right: -20px; border-top-color: var(--blue); border-right-color: transparent; animation-duration: 3s; animation-direction: reverse; }
.r3 { width: 300px; height: 300px; bottom: -180px; left: -80px; animation-duration: 9s; }
@keyframes spin { to { transform: rotate(360deg); } }

.corner-logo {
  position: absolute; top: 14px; left: 16px; z-index: 2;
  height: 124px; width: auto;
  filter: drop-shadow(0 6px 12px #000000cc);
}
.hero-inner { position: relative; z-index: 2; }
.event-name, .subtitle, .rulebook { text-shadow: 0 2px 12px rgba(0, 0, 0, 0.75); }
@media (max-width: 700px) {
  .corner-logo { height: 76px; top: 10px; left: 10px; }
  .hero-inner { padding-top: 72px; }
}
.badge {
  display: inline-block;
  font-family: Orbitron, sans-serif;
  font-size: 12px;
  letter-spacing: .25em;
  padding: 6px 14px;
  border: 1px solid var(--accent);
  color: var(--accent2);
  border-radius: 999px;
  margin-bottom: 14px;
}
.hero h1 {
  margin: 0;
  font-size: clamp(30px, 6vw, 56px);
  font-weight: 900;
  background: linear-gradient(90deg, #fff 0%, var(--accent2) 45%, var(--accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  letter-spacing: .04em;
  filter: drop-shadow(0 4px 14px rgba(0, 0, 0, 0.65));
}
.event-name { margin: 6px 0 0; font-size: clamp(20px, 3.5vw, 30px); font-weight: 900; letter-spacing: .06em; }
.subtitle { margin: 8px 0 4px; font-size: 18px; font-weight: 700; }
.go-shoot {
  display: inline-block;
  margin: 18px 0 12px;
  padding: 6px 16px;
  border-radius: 6px;
  border: 1px solid rgba(251, 191, 36, 0.5);
  background: rgba(245, 158, 11, 0.2);
  color: #fcd34d;
  font-size: 14px;
  font-weight: 900;
  letter-spacing: 0.18em;
  animation: goShootBounce 1s infinite;
}
@keyframes goShootBounce {
  0%, 100% { transform: translateY(-25%); animation-timing-function: cubic-bezier(0.8, 0, 1, 1); }
  50% { transform: translateY(0); animation-timing-function: cubic-bezier(0, 0, 0.2, 1); }
}
.rulebook { margin: 0; color: var(--muted); font-size: 14px; }
.rulebook a { color: var(--accent2); text-decoration: underline; }
.rulebook a:hover { text-decoration: underline; }

/* ---------- Table of contents ---------- */
.toc {
  position: sticky; top: 0; z-index: 20;
  display: flex; gap: 4px; overflow-x: auto; justify-content: center;
  padding: 10px 16px;
  background: #0a0d16ee;
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.toc a {
  flex: 0 0 auto;
  color: var(--muted); text-decoration: none; font-weight: 700;
  padding: 7px 16px; border-radius: 999px;
}
.toc a:hover { color: #fff; background: linear-gradient(90deg, var(--accent), #ff7a1a); }

main { max-width: 1180px; margin: 0 auto; padding: 24px 16px; }

/* ---------- Cards ---------- */
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 20px;
}
.card h2, .section-title { margin: 0 0 12px; font-size: 20px; display: flex; align-items: center; gap: 10px; }
.num {
  font-family: Orbitron, sans-serif; font-size: 12px;
  color: var(--accent2); border: 1px solid var(--accent2);
  padding: 2px 8px; border-radius: 6px;
}
.muted { color: var(--muted); font-size: 14px; margin: 4px 0 12px; }
.win { color: var(--win); }
.lose { color: var(--lose); }

.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(130px, 1fr)); gap: 12px; }
.stat {
  background: var(--card2); border-radius: 12px; padding: 14px; text-align: center;
  border: 1px solid var(--line);
}
.stat b { display: block; font-family: Orbitron, sans-serif; font-size: 34px; color: var(--accent2); line-height: 1.2; }
.stat span { color: var(--muted); font-size: 14px; }

/* ---------- Battle rules ---------- */
.source { margin: 0 0 16px; }
.source a {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 14px 18px; border-radius: 12px;
  background: linear-gradient(90deg, #ffb11a, #ff7a1a);
  color: #1a1004; font-size: clamp(16px, 2.4vw, 20px); font-weight: 900;
  text-decoration: none;
  box-shadow: 0 8px 24px #ff7a1a55;
}
.source a::after {
  content: "PDF";
  flex: 0 0 auto;
  font-family: Orbitron, sans-serif; font-size: 12px; letter-spacing: .08em;
  background: #1a1004; color: #ffb11a;
  border-radius: 8px; padding: 5px 9px;
}
.source a:hover { filter: brightness(1.08); }
.lead { font-size: 17px; margin: 0 0 16px; }
.lead b { color: var(--accent2); }
.rule-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 12px; }
.rule {
  background: var(--card2); border: 1px solid var(--line); border-radius: 12px;
  padding: 16px; border-top: 3px solid var(--accent);
}
.rule-icon {
  width: 40px; height: 40px; border-radius: 50%;
  display: grid; place-items: center;
  background: #0e1324; border: 1px solid var(--accent2); color: var(--accent2);
  font-size: 20px; font-weight: 900; margin-bottom: 8px;
}
.rule h3 { margin: 0 0 4px; font-size: 17px; }
.rule p { margin: 0; color: #cdd4ea; font-size: 15px; }
.rule p b { color: #fff; }

.sub { margin: 22px 0 10px; font-size: 17px; }
.examples { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 12px; }
.example { background: #0e1324; border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px; }
.ex-title { font-weight: 700; color: var(--blue); margin-bottom: 8px; }
.ex-steps { list-style: none; margin: 0; padding: 0; }
.ex-steps li { padding: 6px 0; border-bottom: 1px dashed var(--line); font-size: 14px; }
.ex-steps li.result { border-bottom: 0; color: var(--gold); font-weight: 700; }
.pill {
  display: inline-block; font-size: 12px; font-weight: 700;
  background: var(--card2); border: 1px solid var(--line);
  border-radius: 999px; padding: 1px 9px; margin-right: 8px;
}
.note { color: var(--muted); font-size: 13px; margin: 12px 0 0; }

/* ---------- Flow ---------- */
#format { margin-bottom: 20px; }
.section-title { margin: 8px 4px 14px; }
.flow { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 16px; }
.flow-step {
  position: relative;
  background: linear-gradient(160deg, var(--card2), var(--card));
  border: 1px solid var(--line);
  border-left: 4px solid var(--accent);
  border-radius: var(--radius);
  padding: 18px 18px 14px;
}
.flow-step.final { border-left-color: var(--gold); }
.flow-step h3 { margin: 0 0 8px; font-size: 18px; }
.flow-step p { margin: 6px 0; color: #cdd4ea; font-size: 15px; }
.step-no {
  position: absolute; right: 14px; top: 10px;
  font-family: Orbitron, sans-serif; font-size: 28px; font-weight: 800;
  color: #ffffff12;
}
.slots, .pairs { list-style: none; padding: 0; margin: 8px 0; }
.slots li { padding: 6px 0; border-bottom: 1px dashed var(--line); font-size: 14px; }
.slots li span {
  display: inline-block; min-width: 56px; margin-right: 8px;
  font-weight: 700; color: var(--blue);
}
.pairs { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; }
.pairs li {
  text-align: center; background: #0e1324; border: 1px solid var(--line);
  border-radius: 8px; padding: 6px; font-family: Orbitron, sans-serif; font-size: 14px;
}

/* ---------- Tiebreak ---------- */
.tiebreak { margin: 0; padding: 0; list-style: none; counter-reset: tb; }
.tiebreak li {
  counter-increment: tb;
  display: flex; flex-wrap: wrap; gap: 4px 14px; align-items: baseline;
  padding: 12px 12px 12px 52px; position: relative;
  border-bottom: 1px solid var(--line);
}
.tiebreak li::before {
  content: counter(tb);
  position: absolute; left: 10px; top: 10px;
  width: 30px; height: 30px; border-radius: 50%;
  display: grid; place-items: center;
  background: var(--accent); color: #fff; font-weight: 900;
}
.tiebreak li span { color: var(--muted); font-size: 14px; }

/* ---------- Bracket ---------- */
.bracket-diagram { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
@media (max-width: 640px) { .bracket-diagram { grid-template-columns: 1fr; } }
.bd-col { display: flex; flex-direction: column; gap: 8px; justify-content: center; }
.bd-title { font-weight: 700; font-size: 14px; color: var(--muted); margin-top: 6px; }
.bd-title.win { color: var(--win); }
.bd-title.lose { color: var(--lose); }
.bd-box {
  background: #0e1324; border: 1px solid var(--line); border-radius: 8px;
  padding: 8px 10px; font-size: 14px; text-align: center;
}
.bd-box.gold { border-color: var(--gold); color: var(--gold); }
.bd-box.bronze { border-color: var(--bronze); color: var(--bronze); }

.prizes { display: grid; grid-template-columns: 1fr; gap: 16px; }
@media (min-width: 1100px) {
  .prizes { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
.prize {
  margin: 0; background: #101628; border-radius: 14px; overflow: hidden;
  border: 2px solid var(--line); text-align: center;
}
.prize img {
  display: block; width: auto; max-width: 240px; height: 170px;
  margin: 12px auto 0; object-fit: contain; background: transparent;
}
.prize figcaption { padding: 12px 10px 14px; background: #0e1324; line-height: 1.35; }
.prize figcaption b { display: block; font-size: 18px; }
.prize figcaption span { display: block; margin-top: 4px; font-size: 15px; font-weight: 700; white-space: nowrap; }
.prize.gold { border-color: var(--gold); }
.prize.gold figcaption { color: var(--gold); }
.prize.silver { border-color: #cfd8e8; }
.prize.silver figcaption { color: #cfd8e8; }
.prize.bronze { border-color: var(--bronze); }
.prize.bronze figcaption { color: var(--bronze); }

footer { text-align: center; color: var(--muted); font-size: 13px; padding: 10px 0 30px; }

/* ---------- Print ---------- */
@media print {
  body { background: #fff; color: #000; }
  .toc, .hero-bg, .hero-photo, .spark-canvas, .orbit-layer { display: none !important; }
  .hero { background: none; border: 0; padding: 10px; }
  .hero h1 { background: none; color: #000; -webkit-text-fill-color: #000; }
  .card, .flow-step, .rule, .example, .stat, .bd-box, .pairs li { background: #fff; border-color: #999; color: #000; break-inside: avoid; }
  .flow-step p, .rule p, .muted, .note, .tiebreak li span { color: #333; }
}