:root {
  /* Navy primary + neutral surfaces; olive reserved for the logo. Two modes = navy / green. */
  --green: #1f3a5c;        /* primary (navy) — buttons, header, links */
  --green-dark: #16304d;   /* headings / brand name (deep navy) */
  --green-deep: #122a45;   /* darkest navy — dark sections + footer */
  --sage: #a3b176;         /* olive accent (logo) */
  --navy: #1f3a5c;         /* Tournament */
  --casual-green: #2d9e51; /* Casual mode accent (green) */
  --orange: #ea580c;       /* small accent */
  --ink: #1f2a30;          /* neutral dark text */
  --muted: #5d6670;
  --line: #e6e8ec;
  --bg-tint: #f6f7f9;      /* neutral light surface */
  --white: #fff;
  --radius: 16px;
  --shadow: 0 10px 40px rgba(31, 58, 92, 0.12);
  --shadow-sm: 0 2px 12px rgba(31, 58, 92, 0.08);
  --maxw: 1120px;
  --font: 'Noto Sans TC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--white);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

a { color: inherit; text-decoration: none; }

h1, h2, h3 { line-height: 1.25; letter-spacing: -0.01em; }

/* ───────────── Buttons ───────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 14px 28px; border-radius: 999px; font-weight: 700; font-size: 16px;
  cursor: pointer; transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
  border: 2px solid transparent; white-space: nowrap;
}
.btn:active { transform: scale(.97); }
.btn-primary { background: var(--green); color: #fff; box-shadow: 0 6px 18px rgba(31,58,92,.35); }
.btn-primary:hover { background: #16304d; box-shadow: 0 8px 24px rgba(31,58,92,.45); }
.btn-ghost { background: transparent; color: var(--green-dark); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--green); color: var(--green); }
.btn-ghost-light { background: rgba(255,255,255,.12); color: #fff; border-color: rgba(255,255,255,.35); }
.btn-ghost-light:hover { background: rgba(255,255,255,.22); }

/* ───────────── Nav ───────────── */
.nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.86); backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; }
.brand-img { width: 36px; height: 36px; flex-shrink: 0; display: block; }
.brand-mark {
  width: 34px; height: 34px; border-radius: 10px; background: var(--green);
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.brand-name { font-weight: 900; font-size: 19px; color: var(--green-dark); display: flex; align-items: baseline; gap: 6px; }
.brand-en { font-size: 12px; font-weight: 700; color: var(--muted); letter-spacing: .04em; }

.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links a { font-weight: 500; font-size: 15px; color: var(--ink); transition: color .15s; }
.nav-links a:hover { color: var(--green); }
.nav-cta {
  background: var(--green); color: #fff !important; padding: 8px 18px; border-radius: 999px;
  font-weight: 700 !important;
}
.nav-cta:hover { background: #16304d; }

.nav-right { display: flex; align-items: center; gap: 12px; }
.lang-toggle {
  background: transparent; border: 1px solid var(--line); border-radius: 999px;
  padding: 5px 12px; font-size: 13px; font-weight: 500; cursor: pointer; color: var(--muted);
  font-family: var(--font);
}
.lang-toggle .lang-sep { margin: 0 5px; opacity: .4; }
.lang-toggle .active { color: var(--green); font-weight: 700; }

.nav-burger { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 6px; }
.nav-burger span { width: 22px; height: 2px; background: var(--green-dark); border-radius: 2px; transition: .25s; }

/* ───────────── Hero ───────────── */
.hero { padding: 72px 0 80px; background: linear-gradient(170deg, #f6f7f9 0%, #fff 60%); overflow: hidden; }
.hero-inner { display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center; }
.pill {
  display: inline-block; background: #eef2f7; color: var(--green-dark);
  padding: 7px 16px; border-radius: 999px; font-size: 14px; font-weight: 700; margin-bottom: 22px;
}
.hero h1 { font-size: clamp(34px, 5vw, 54px); font-weight: 900; color: var(--green-dark); margin-bottom: 20px; }
.hero-sub { font-size: 18px; color: var(--muted); max-width: 520px; margin-bottom: 32px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 28px; }
.hero-trust { display: flex; gap: 22px; flex-wrap: wrap; font-size: 14px; color: var(--muted); font-weight: 500; }

/* Phone mockup */
.hero-phone { position: relative; display: flex; justify-content: center; }
.phone {
  position: relative; width: 300px; background: #fff; border-radius: 38px;
  border: 10px solid #1a2420; box-shadow: var(--shadow); padding: 14px 12px 18px; z-index: 2;
}
.phone-notch { width: 110px; height: 22px; background: #1a2420; border-radius: 0 0 14px 14px; margin: -14px auto 12px; }
.phone-screen { border-radius: 16px; overflow: hidden; }
.pscore-head { background: var(--green); color: #fff; font-size: 13px; font-weight: 700; padding: 9px 12px; border-radius: 10px 10px 0 0; }
.pscore { width: 100%; border-collapse: collapse; }
.pscore th, .pscore td { text-align: center; }
.ph-row th { background: #dfe4ea; color: #3a4452; font-size: 12px; font-weight: 700; height: 26px; border-right: 1px solid #cdd4dd; }
.pp-row th, .pp-row td { background: #eef1f5; color: #8a93a0; font-size: 11px; height: 20px; border-right: 1px solid #dde2e8; }
.pscore tbody td { height: 42px; border-right: 1px solid #f0f0f0; border-bottom: 1px solid #f0f0f0; }
.pa { font-weight: 700; color: var(--orange); font-size: 12px; }
.sc { display: inline-flex; align-items: center; justify-content: center; font-size: 13px; font-weight: 700; box-sizing: border-box; color: #1a1a1a; }
.filled-c { width: 28px; height: 28px; border-radius: 50%; background: var(--green); color: #fff; }
.dbl-c { width: 24px; height: 24px; border-radius: 50%; border: 1px solid var(--green); background: #fff; box-shadow: 0 0 0 1px #fff, 0 0 0 2px var(--green); }
.thin-c { width: 28px; height: 28px; border-radius: 50%; border: 1px solid var(--green); background: #fff; }
.par { color: #222; }
.thin-s { width: 26px; height: 26px; border-radius: 4px; border: 1px solid var(--green); background: #fff; }
.dbl-s { width: 22px; height: 22px; border-radius: 4px; border: 1px solid var(--green); background: #fff; box-shadow: 0 0 0 1px #fff, 0 0 0 2px var(--green); }
.pchip-row { display: flex; gap: 8px; padding: 12px 10px; justify-content: center; }
.pchip { font-size: 12px; font-weight: 700; padding: 4px 12px; border-radius: 999px; }
.pchip.win { background: #dcfce7; color: #16a34a; }
.pchip.lose { background: #fee2e2; color: #dc2626; }
.phone-glow { position: absolute; width: 340px; height: 340px; background: radial-gradient(circle, rgba(31,58,92,.18), transparent 65%); top: 40%; left: 50%; transform: translate(-50%,-50%); z-index: 1; }

/* ───────────── Section ───────────── */
.section { padding: 84px 0; }
.section-tint { background: var(--bg-tint); }
.section-head { text-align: center; max-width: 640px; margin: 0 auto 52px; }
.section-head h2 { font-size: clamp(28px, 4vw, 40px); font-weight: 900; color: var(--green-dark); margin-bottom: 12px; }
.section-head p { font-size: 18px; color: var(--muted); }

/* ───────────── Modes ───────────── */
.mode-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.mode-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 36px 32px; box-shadow: var(--shadow-sm); position: relative; overflow: hidden; }
.mode-card::before { content: ""; position: absolute; top: 0; left: 0; right: 0; height: 4px; }
.mode-tournament::before { background: var(--green); }
.mode-casual::before { background: var(--casual-green); }
.mode-tag { display: inline-block; font-size: 13px; font-weight: 700; padding: 5px 14px; border-radius: 999px; margin-bottom: 16px; }
.mode-tournament .mode-tag { background: #eef2f7; color: var(--green-dark); }
.mode-casual .mode-tag { background: #e6f6ec; color: #15803d; }
.mode-card h3 { font-size: 24px; font-weight: 900; color: var(--ink); margin-bottom: 12px; }
.mode-card > p { color: var(--muted); margin-bottom: 22px; }
.mode-list { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.mode-list li { position: relative; padding-left: 28px; font-size: 15px; font-weight: 500; }
.mode-list li::before { content: "✓"; position: absolute; left: 0; top: 0; font-weight: 900; }
.mode-tournament .mode-list li::before { color: var(--green); }
.mode-casual .mode-list li::before { color: var(--casual-green); }

/* ───────────── Features ───────────── */
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.feature { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 30px 26px; transition: transform .2s ease, box-shadow .2s ease; }
.feature:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.feature-ic { width: 52px; height: 52px; border-radius: 14px; background: #eef2f7; color: var(--green); display: flex; align-items: center; justify-content: center; margin-bottom: 18px; }
.feature-ic svg { width: 26px; height: 26px; }
.feature h3 { font-size: 19px; font-weight: 700; margin-bottom: 8px; }
.feature p { color: var(--muted); font-size: 15px; }

/* ───────────── Betting ───────────── */
.bet-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.bet-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 28px 22px; box-shadow: var(--shadow-sm); }
.bet-ai { background: linear-gradient(160deg, #1e3a5f, #0f2440); color: #fff; border-color: transparent; }
.bet-badge { display: inline-block; font-size: 13px; font-weight: 900; padding: 5px 13px; border-radius: 8px; background: #eef2f7; color: var(--green-dark); margin-bottom: 16px; letter-spacing: .03em; }
.bet-badge.ai { background: rgba(255,255,255,.18); color: #fff; }
.bet-card h3 { font-size: 19px; font-weight: 700; margin-bottom: 8px; }
.bet-card p { font-size: 14.5px; color: var(--muted); }
.bet-ai p { color: rgba(255,255,255,.8); }

/* ───────────── How (dark) ───────────── */
.section-dark { background: var(--green-deep); }
.section-dark .section-head h2 { color: #fff; }
.section-dark .section-head p { color: rgba(255,255,255,.7); }
.step-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.step { text-align: center; padding: 0 12px; }
.step-num { width: 56px; height: 56px; border-radius: 50%; background: var(--green); color: #fff; font-size: 24px; font-weight: 900; display: flex; align-items: center; justify-content: center; margin: 0 auto 20px; }
.step h3 { font-size: 20px; font-weight: 700; color: #fff; margin-bottom: 10px; }
.step p { color: rgba(255,255,255,.72); font-size: 15px; }

/* ───────────── CTA ───────────── */
.cta { background: linear-gradient(135deg, var(--green), #16304d); padding: 80px 0; text-align: center; }
.cta-inner { max-width: 640px; }
.cta h2 { font-size: clamp(28px, 4vw, 38px); font-weight: 900; color: #fff; margin-bottom: 14px; }
.cta p { font-size: 18px; color: rgba(255,255,255,.9); margin-bottom: 30px; }
.cta-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.cta .btn-primary { background: #fff; color: var(--green-dark); box-shadow: 0 8px 24px rgba(0,0,0,.18); }
.cta .btn-primary:hover { background: #f0f0f0; }

/* ───────────── Footer ───────────── */
.footer { background: var(--green-deep); color: rgba(255,255,255,.7); padding: 48px 0 32px; }
.footer-inner { display: flex; flex-wrap: wrap; gap: 24px; align-items: center; justify-content: space-between; }
.footer-brand .brand-name { color: #fff; }
.footer-brand .brand-en { color: rgba(255,255,255,.6); }
.footer-brand p { font-size: 14px; margin-top: 4px; }
.footer-links { display: flex; gap: 22px; }
.footer-links a { font-size: 14px; transition: color .15s; }
.footer-links a:hover { color: #fff; }
.footer-copy { width: 100%; text-align: center; font-size: 13px; opacity: .6; margin-top: 20px; padding-top: 20px; border-top: 1px solid rgba(255,255,255,.1); }

/* ───────────── Reveal animation ───────────── */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ───────────── Responsive ───────────── */
@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; gap: 40px; text-align: center; }
  .hero-copy { order: 1; }
  .hero-phone { order: 2; }
  .hero-sub { margin-left: auto; margin-right: auto; }
  .hero-actions, .hero-trust { justify-content: center; }
  .feature-grid { grid-template-columns: 1fr 1fr; }
  .bet-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 680px) {
  .nav-links {
    position: fixed; top: 64px; left: 0; right: 0; background: #fff;
    flex-direction: column; gap: 0; padding: 8px 0; border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow); transform: translateY(-120%); transition: transform .28s ease;
  }
  .nav-links.open { transform: translateY(0); }
  .nav-links a { padding: 14px 24px; width: 100%; }
  .nav-cta { margin: 8px 24px; text-align: center; }
  .nav-burger { display: flex; }
  .mode-grid { grid-template-columns: 1fr; }
  .feature-grid { grid-template-columns: 1fr; }
  .bet-grid { grid-template-columns: 1fr; }
  .step-grid { grid-template-columns: 1fr; gap: 36px; }
  .section { padding: 60px 0; }
  .hero { padding: 48px 0 60px; }
}