@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+TC:wght@400;500;700;900&display=swap');

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Noto Sans TC", "Microsoft JhengHei", Arial, sans-serif;
  background: #000;
  color: #fff;
}

/* 背景影片固定 */
.bg-video {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: -3;
}

/* 背景遮罩 */
.bg-dark {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -2;
  background:
    linear-gradient(180deg, rgba(0,0,0,0.78) 0%, rgba(0,0,0,0.45) 42%, rgba(0,0,0,0.94) 100%),
    radial-gradient(circle at center, rgba(255,193,72,0.18), rgba(0,0,0,0.84) 62%);
}

/* 上方選單 */
.top-menu {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 50;
  padding: 14px 22px;
  background: rgba(0, 0, 0, 0.76);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255, 201, 90, 0.18);
}

.menu-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.menu-logo {
  height: 68px;
  width: auto;
  display: block;
  filter:
    drop-shadow(0 0 14px rgba(129, 76, 255, 0.6))
    drop-shadow(0 0 22px rgba(0, 180, 255, 0.32));
}

.menu-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #17110a;
  background: linear-gradient(135deg, #fff0b8 0%, #ffc24a 48%, #ff9f1c 100%);
  text-decoration: none;
  font-size: 17px;
  font-weight: 900;
  letter-spacing: 0.6px;
  padding: 13px 25px;
  border-radius: 999px;
  box-shadow:
    0 0 24px rgba(255, 181, 46, 0.5),
    inset 0 1px 0 rgba(255,255,255,0.7);
  white-space: nowrap;
}

/* 第一屏 */
.hero {
  min-height: 100vh;
  padding: 112px 16px 38px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-content {
  width: 100%;
  max-width: 560px;
  text-align: center;
}

.gx-logo {
  width: 208px;
  max-width: 62%;
  height: auto;
  margin-bottom: 12px;
  filter:
    drop-shadow(0 0 18px rgba(122, 66, 255, 0.7))
    drop-shadow(0 0 28px rgba(0, 180, 255, 0.38));
}

.brand-pill {
  display: inline-block;
  font-size: 14px;
  font-weight: 800;
  color: #ffd978;
  letter-spacing: 1.5px;
  padding: 8px 18px;
  margin-bottom: 10px;
  border-radius: 999px;
  background: rgba(0,0,0,0.45);
  border: 1px solid rgba(255, 211, 106, 0.42);
  box-shadow:
    0 0 18px rgba(255, 195, 70, 0.16),
    inset 0 1px 0 rgba(255,255,255,0.08);
}

.worldcup-label {
  font-size: 12px;
  font-weight: 900;
  color: #ffffff;
  letter-spacing: 3px;
  margin-bottom: 8px;
  opacity: 0.9;
  text-shadow: 0 0 12px rgba(255, 211, 106, 0.35);
}

h1 {
  font-size: clamp(34px, 7vw, 52px);
  line-height: 1.1;
  font-weight: 900;
  color: #fff4c8;
  letter-spacing: 1px;
  margin-bottom: 16px;
  text-shadow:
    0 0 18px rgba(255, 195, 70, 0.45),
    0 4px 12px rgba(0,0,0,0.92);
}

/* 活動卡片 */
.activity-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  max-width: 460px;
  margin: 0 auto 14px;
}

.activity-card {
  position: relative;
  overflow: hidden;
  padding: 15px 16px;
  border-radius: 20px;
  background:
    linear-gradient(90deg, rgba(255, 211, 106, 0.16), rgba(255,255,255,0.04), rgba(255,160,30,0.13)),
    rgba(0, 0, 0, 0.52);
  border: 1px solid rgba(255, 211, 106, 0.28);
  box-shadow:
    0 0 24px rgba(255, 180, 40, 0.12),
    inset 0 1px 0 rgba(255,255,255,0.08);
}

.activity-card::before {
  content: "";
  position: absolute;
  top: -40px;
  right: -40px;
  width: 110px;
  height: 110px;
  background: radial-gradient(circle, rgba(255, 211, 106, 0.24), transparent 66%);
}

.hot-card {
  background:
    linear-gradient(90deg, rgba(255, 190, 58, 0.22), rgba(255,255,255,0.05), rgba(255,150,30,0.18)),
    rgba(0, 0, 0, 0.58);
  border: 1px solid rgba(255, 211, 106, 0.46);
  box-shadow:
    0 0 30px rgba(255, 180, 40, 0.22),
    inset 0 1px 0 rgba(255,255,255,0.12);
}

.activity-name {
  display: inline-block;
  font-size: 13px;
  font-weight: 900;
  color: #201307;
  background: linear-gradient(135deg, #fff0b8, #ffb12b);
  padding: 5px 12px;
  border-radius: 999px;
  margin-bottom: 8px;
}

.activity-line {
  font-size: 24px;
  font-weight: 900;
  color: #ffffff;
  letter-spacing: 0.5px;
  line-height: 1.35;
  white-space: nowrap;
  text-shadow:
    0 0 12px rgba(255, 190, 60, 0.28),
    0 3px 10px rgba(0,0,0,0.9);
}

.activity-line span,
.activity-line strong {
  font-size: 34px;
  font-weight: 900;
  background: linear-gradient(180deg, #ffffff, #ffe8a2 35%, #ffb22a 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  filter:
    drop-shadow(0 0 10px rgba(255,193,58,0.38))
    drop-shadow(0 5px 10px rgba(0,0,0,0.55));
}

.water-tag {
  width: fit-content;
  margin: 16px auto 22px;
  padding: 9px 28px;
  border-radius: 999px;
  color: #ffe8ad;
  font-size: 19px;
  font-weight: 900;
  letter-spacing: 2px;
  background: rgba(0,0,0,0.52);
  border: 1px solid rgba(255,211,106,0.35);
  box-shadow: 0 0 18px rgba(255,181,46,0.16);
}

/* 主按鈕 */
.main-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  color: #18110a;
  font-size: 20px;
  font-weight: 900;
  letter-spacing: 0.8px;
  padding: 16px 40px;
  border-radius: 999px;
  background: linear-gradient(135deg, #fff0b8 0%, #ffc24a 48%, #ff9f1c 100%);
  box-shadow:
    0 0 34px rgba(255, 181, 46, 0.56),
    0 10px 28px rgba(0,0,0,0.34),
    inset 0 1px 0 rgba(255,255,255,0.72);
}

.safe-note {
  margin-top: 13px;
  font-size: 14px;
  line-height: 1.6;
  color: rgba(255,255,255,0.78);
}

/* 第二區 */
.features {
  padding: 86px 7%;
  text-align: center;
  background:
    linear-gradient(180deg, rgba(0,0,0,0.92), rgba(12,12,12,0.96));
  border-top: 1px solid rgba(255, 211, 106, 0.14);
}

.features h2,
.bottom-cta h2 {
  font-size: clamp(30px, 6vw, 42px);
  color: #ffe2a1;
  font-weight: 900;
  margin-bottom: 34px;
  text-shadow: 0 0 18px rgba(255, 180, 40, 0.25);
}

.cards {
  max-width: 1080px;
  margin: auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.card {
  padding: 34px 24px;
  border-radius: 26px;
  background:
    linear-gradient(180deg, rgba(35,35,35,0.95), rgba(12,12,12,0.98));
  border: 1px solid rgba(255, 211, 106, 0.22);
  box-shadow:
    0 12px 35px rgba(0,0,0,0.32),
    inset 0 1px 0 rgba(255,255,255,0.06);
}

.card-icon {
  font-size: 34px;
  margin-bottom: 14px;
}

.card h3 {
  font-size: 23px;
  margin-bottom: 14px;
  color: #fff1c4;
}

.card p {
  font-size: 16px;
  line-height: 1.75;
  color: rgba(255,255,255,0.74);
}

/* 第三區 */
.bottom-cta {
  padding: 86px 7%;
  text-align: center;
  background: rgba(0,0,0,0.94);
  border-top: 1px solid rgba(255, 211, 106, 0.12);
}

.bottom-cta p {
  font-size: 18px;
  color: rgba(255,255,255,0.8);
  line-height: 1.75;
  margin-bottom: 30px;
}

/* 手機版 */
@media (max-width: 768px) {
  .top-menu {
    padding: 12px 14px;
  }

  .menu-logo {
    height: 60px;
  }

  .menu-btn {
    font-size: 16px;
    padding: 11px 18px;
  }

  .hero {
    padding: 104px 14px 32px;
  }

  .gx-logo {
    width: 188px;
    max-width: 60%;
    margin-bottom: 10px;
  }

  .brand-pill {
    font-size: 13px;
    padding: 7px 15px;
    margin-bottom: 9px;
  }

  .worldcup-label {
    font-size: 11px;
    letter-spacing: 2.5px;
    margin-bottom: 7px;
  }

  h1 {
    font-size: 34px;
    margin-bottom: 14px;
  }

  .activity-list {
    gap: 10px;
    max-width: 390px;
    margin-bottom: 12px;
  }

  .activity-card {
    padding: 12px 10px;
    border-radius: 18px;
  }

  .activity-name {
    font-size: 12px;
    padding: 5px 11px;
    margin-bottom: 6px;
  }

  .activity-line {
    font-size: 17px;
    line-height: 1.35;
    white-space: nowrap;
  }

  .activity-line span,
  .activity-line strong {
    font-size: 25px;
  }

  .water-tag {
    font-size: 17px;
    padding: 8px 24px;
    margin: 14px auto 20px;
  }

  .main-btn {
    font-size: 18px;
    padding: 15px 34px;
  }

  .safe-note {
    font-size: 13px;
  }

  .features {
    padding: 72px 6%;
  }

  .cards {
    grid-template-columns: 1fr;
  }

  .card {
    padding: 30px 20px;
  }

  .bottom-cta {
    padding: 74px 6%;
  }
}