/* ===== Theme ===== */
:root {
  --bg: #0a0f23;
  --bg-alt: #0c152d;
  --panel: #0f1735;
  --panel-2: #111a3f;
  --text: #e6f1ff;
  --muted: #98a6bd;
  --accent: #2dd4bf;    /* primary accent (teal) */
  --accent-2: #f59e0b;  /* secondary accent (amber) */
  --success: #22c55e;
  --danger: #ef4444;
  --radius: 14px;
  --shadow-1: 0 6px 20px rgba(0, 0, 0, 0.25);
  --shadow-2: 0 12px 40px rgba(0, 0, 0, 0.35);
  --maxw: 1100px;
}

/* ===== Reset ===== */
*,
*::before,
*::after { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background:
    radial-gradient(1200px 600px at 80% -20%, #19325b44, transparent 60%),
    radial-gradient(900px 500px at -10% 30%, #1b3a6b55, transparent 60%),
    var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img, svg { display: block; max-width: 100%; }

a { color: inherit; text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 2px; }

.container {
  width: min(100% - 2rem, var(--maxw));
  margin-inline: auto;
}

.flow > * + * { margin-top: 1rem; }

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(8px);
  background: linear-gradient(to bottom, rgba(10,15,35,.85), rgba(10,15,35,.35), transparent);
  border-bottom: 1px solid rgba(255,255,255,.06);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .8rem 0;
}
.brand { display: inline-flex; align-items: center; gap: .6rem; font-weight: 700; letter-spacing: .2px; }
.brand-mark { color: var(--accent); opacity: .9; }
.brand-text { color: var(--text); opacity: .9; }

.site-nav { display: flex; gap: 1rem; }
.site-nav a {
  padding: .45rem .8rem;
  border-radius: 999px;
  color: var(--muted);
  transition: color .2s, background .2s, transform .2s;
}
.site-nav a:hover {
  color: var(--text);
  background: rgba(255,255,255,.05);
  text-decoration: none;
}

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 100svh;
  display: grid;
  place-items: center;
  overflow: hidden;
  border-bottom: 1px solid rgba(255,255,255,.06);
}
#starfield {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}
.hero-inner {
  position: relative;
  z-index: 2;
  padding: 6rem 0 4rem;
  text-align: center;
}
.hero-title {
  display: grid;
  justify-items: center;
  gap: .8rem;
  margin-bottom: .8rem;
}
.title-line {
  font-size: clamp(2.4rem, 4vw + 1rem, 4.2rem);
  font-weight: 800;
  letter-spacing: .8px;
  text-shadow: 0 6px 20px rgba(45,212,191,.12);
}
.title-sub {
  color: var(--muted);
  font-size: 1.1rem;
  letter-spacing: 6px;
  text-transform: uppercase;
}
.hero-tagline {
  max-width: 760px;
  margin: .6rem auto 1.2rem;
  color: var(--muted);
  font-size: 1.05rem;
}
.hero-cta { display: inline-flex; gap: .8rem; margin-bottom: 1rem; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  padding: .8rem 1.05rem;
  border-radius: 12px;
  border: 1px solid transparent;
  font-weight: 600;
  cursor: pointer;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn-primary {
  background: linear-gradient(135deg, color-mix(in oklab, var(--accent), white 8%), var(--accent));
  color: #06251f;
  box-shadow: 0 10px 30px color-mix(in oklab, var(--accent), black 70%);
}
.btn-primary:hover {
  box-shadow: 0 14px 36px color-mix(in oklab, var(--accent), black 65%);
}

.btn-ghost {
  background: rgba(255,255,255,.05);
  border-color: rgba(255,255,255,.12);
  color: var(--text);
}
.btn-ghost:hover { background: rgba(255,255,255,.08); }

.hero-scroll-hint {
  position: absolute;
  left: 50%;
  bottom: 1.2rem;
  transform: translateX(-50%);
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  color: var(--muted);
  font-size: .95rem;
  opacity: .85;
}
.hero-scroll-hint .dot {
  width: 6px; height: 6px; border-radius: 999px;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent);
  animation: breathe 2.2s ease-in-out infinite;
}
@keyframes breathe { 0%,100%{transform:scale(.8); opacity:.7} 50%{transform:scale(1.2); opacity:1}}

.hero-bg-glow {
  position: absolute;
  inset: -10% -10% auto -10%;
  height: 60%;
  background:
    radial-gradient(600px 260px at 75% 10%, color-mix(in oklab, var(--accent), transparent 60%), transparent 60%),
    radial-gradient(480px 220px at 25% 20%, color-mix(in oklab, var(--accent-2), transparent 70%), transparent 60%);
  filter: blur(40px);
  opacity: .45;
  z-index: 1;
  pointer-events: none;
}

/* ===== Sections ===== */
.section {
  padding: clamp(2.5rem, 4vw + 1rem, 5rem) 0;
  position: relative;
}
.section.alt {
  background: linear-gradient(180deg, rgba(255,255,255,.02), rgba(255,255,255,0));
  border-top: 1px solid rgba(255,255,255,.06);
  border-bottom: 1px solid rgba(255,255,255,.06);
}
.section-title {
  font-size: clamp(1.6rem, 1.2rem + 2vw, 2.2rem);
  letter-spacing: .4px;
  margin-bottom: .6rem;
}

.grid {
  display: grid;
  gap: 1rem;
}
.grid.two { grid-template-columns: repeat(2, minmax(0,1fr)); }
.grid.three { grid-template-columns: repeat(3, minmax(0,1fr)); }
@media (max-width: 900px) {
  .grid.two, .grid.three { grid-template-columns: 1fr; }
}

.card {
  background: linear-gradient(180deg, var(--panel), var(--panel-2));
  border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--radius);
  padding: 1.2rem;
  box-shadow: var(--shadow-1);
}
.card h3 { margin: 0 0 .2rem 0; }
.card p { color: var(--muted); }

/* ===== Timeline ===== */
.timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .8rem;
}
.timeline li {
  position: relative;
  padding: 1rem 1rem 1rem 1.4rem;
  background: linear-gradient(180deg, var(--panel), var(--panel-2));
  border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--radius);
  box-shadow: var(--shadow-1);
}
.timeline li::before {
  content: "";
  position: absolute;
  left: .4rem; top: 1.2rem;
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 16px var(--accent);
}
.timeline h3 {
  margin: 0 0 .3rem 0;
}

/* ===== Character Card ===== */
character-card {
  display: block;
}
.character-card {
  position: relative;
  background: linear-gradient(180deg, var(--panel), var(--panel-2));
  border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--radius);
  padding: 1.2rem;
  box-shadow: var(--shadow-1);
  overflow: hidden;
  transform-style: preserve-3d;
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
  will-change: transform;
}
.character-card::after {
  content: "";
  position: absolute; inset: 0;
  background: radial-gradient(300px 120px at var(--mx,50%) var(--my,50%), color-mix(in oklab, var(--accent), transparent 80%), transparent 60%);
  opacity: .7;
  pointer-events: none;
  mix-blend-mode: screen;
}
.character-card:hover {
  box-shadow: var(--shadow-2);
  border-color: color-mix(in oklab, var(--accent), white 70%);
}
.character-name {
  display: flex; align-items: center; gap: .6rem;
  font-weight: 800; letter-spacing: .2px; margin-bottom: .2rem;
}
.character-name .dot {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent);
}
.character-role { color: var(--muted); font-size: .95rem; margin-bottom: .4rem; }
.character-quote {
  font-style: italic;
  color: #dbeafe;
  opacity: .9;
}

/* ===== Animated Logo Web Component ===== */
animated-logo { display: inline-block; }
.logo {
  --size: clamp(88px, 14vw, 120px);
  width: var(--size); height: var(--size);
  position: relative;
  margin: 0 auto;
  filter: drop-shadow(0 10px 25px rgba(45,212,191,.15));
}
.logo .ring {
  position: absolute; inset: 0;
  border-radius: 50%;
  background:
    conic-gradient(from 0deg,
      color-mix(in oklab, var(--accent), transparent 40%) 0deg 70deg,
      transparent 70deg 110deg,
      color-mix(in oklab, var(--accent-2), transparent 30%) 110deg 180deg,
      transparent 180deg 260deg,
      color-mix(in oklab, var(--accent), transparent 40%) 260deg 360deg
    );
  mask: radial-gradient(circle at 50% 50%, transparent 47%, black 47.2%);
  animation: ringRotate 16s linear infinite;
  opacity: .9;
}
.logo .ring::after {
  content: "";
  position: absolute; inset: 6%;
  border-radius: 50%;
  border: 2px dashed rgba(255,255,255,.15);
  animation: ringRotate 22s linear infinite reverse;
}
.logo .ship {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%) translateX(32%) rotate(12deg);
  animation: shipBob 3s ease-in-out infinite;
}
.logo .ship svg { width: 34px; height: 34px; color: var(--accent); filter: drop-shadow(0 0 10px color-mix(in oklab, var(--accent), black 70%)); }
@keyframes ringRotate { to { transform: rotate(360deg); } }
@keyframes shipBob { 0%,100% { transform: translate(-50%, -50%) translateX(32%) rotate(12deg); } 50% { transform: translate(-50%, -50%) translateX(36%) rotate(14deg); } }
@media (prefers-reduced-motion: reduce) {
  .logo .ring, .logo .ring::after, .logo .ship { animation: none; }
}

/* ===== Footer ===== */
.site-footer {
  border-top: 1px solid rgba(255,255,255,.06);
  padding: 1.2rem 0 2.2rem;
  color: var(--muted);
  text-align: center;
}
.footer-inner { display: inline-flex; align-items: center; gap: .6rem; }
.sep { opacity: .6; }

/* ===== To Top Button ===== */
.to-top {
  position: fixed;
  right: 16px; bottom: 16px;
  width: 42px; height: 42px;
  display: grid; place-items: center;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,.12);
  background: rgba(255,255,255,.05);
  color: var(--text);
  backdrop-filter: blur(8px);
  box-shadow: var(--shadow-1);
  cursor: pointer;
  transition: transform .2s ease, background .2s ease, border-color .2s ease;
  opacity: 0; visibility: hidden; transform: translateY(8px);
}
.to-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
.to-top:hover { background: rgba(255,255,255,.09); border-color: rgba(255,255,255,.22); }

/* ===== Utilities ===== */
.muted { color: var(--muted); }

/* ===== Components (Web Components base) ===== */
class ParallaxSection extends HTMLElement {
  connectedCallback() {
    this._onScroll = () => {
      const rect = this.getBoundingClientRect();
      const center = rect.top + rect.height / 2;
      const delta = (window.innerHeight / 2 - center) / window.innerHeight; // -1..1
      const factor = Math.max(-1, Math.min(1, delta));
      this.style.setProperty('--parallax', (factor).toFixed(3));
    };
    this._onScroll();
    window.addEventListener('scroll', this._onScroll, { passive: true });
    window.addEventListener('resize', this._onScroll);
  }
  disconnectedCallback() {
    window.removeEventListener('scroll', this._onScroll);
    window.removeEventListener('resize', this._onScroll);
  }
}
if (!customElements.get('parallax-section')) {
  customElements.define('parallax-section', ParallaxSection);
}