/* ============================================================
   恐龙岛2026 · 官方品牌官网
   视觉体系：深墨绿 #1B3A2F / 琥珀金 #D4A537 / 熔岩橙 #E8590C
   ============================================================ */

:root {
  --green-900: #1B3A2F;
  --green-800: #21473A;
  --green-700: #2A5746;
  --green-ink: #0B1D17;
  --gold: #D4A537;
  --gold-light: #E5BF5B;
  --orange: #E8590C;
  --orange-light: #F0702E;
  --text-main: #F0F0F0;
  --text-sub: #A0A0A0;
  --text-dark: #1B3A2F;
  --text-dark-sub: #4A4A4A;
  --glass-bg: rgba(27, 58, 47, 0.55);
  --glass-border: rgba(212, 165, 55, 0.28);
  --radius: 16px;
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --font: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --header-h: 76px;
  --shadow-lg: 0 24px 60px rgba(0, 0, 0, 0.45);
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font);
  background: var(--green-900);
  color: var(--text-main);
  font-size: 18px;
  line-height: 1.75;
  overflow-x: hidden;
}

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

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

ul { list-style: none; }

.container { width: min(1200px, 92%); margin-inline: auto; }

/* ============ 按钮 ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 30px;
  border-radius: 999px;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.5px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease),
    background 0.25s var(--ease), color 0.25s var(--ease), border-color 0.25s var(--ease);
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--orange), var(--orange-light));
  color: #fff;
  box-shadow: 0 10px 26px rgba(232, 89, 12, 0.35);
}
.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 38px rgba(232, 89, 12, 0.5);
}

.btn-gold {
  background: linear-gradient(135deg, var(--gold), var(--gold-light));
  color: var(--text-dark);
  box-shadow: 0 10px 26px rgba(212, 165, 55, 0.3);
}
.btn-gold:hover { transform: translateY(-3px); box-shadow: 0 16px 38px rgba(212, 165, 55, 0.45); }

.btn-ghost {
  background: rgba(212, 165, 55, 0.08);
  border-color: rgba(212, 165, 55, 0.6);
  color: var(--gold);
}
.btn-ghost:hover { background: rgba(212, 165, 55, 0.18); transform: translateY(-3px); }

.btn-lg { padding: 16px 38px; font-size: 17px; }

/* ============ 顶部导航 ============ */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  background: linear-gradient(to bottom, rgba(11, 29, 23, 0.85), transparent);
  transition: background 0.4s var(--ease), backdrop-filter 0.4s, box-shadow 0.4s;
}
.site-header.scrolled {
  background: rgba(27, 58, 47, 0.85);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.35);
  border-bottom: 1px solid rgba(212, 165, 55, 0.16);
}

.nav-wrap {
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-mark { width: 38px; height: 38px; }
.logo-text {
  font-size: 22px;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: 1px;
}
.logo-text em { font-style: normal; color: var(--gold); }

.main-nav { display: flex; align-items: center; gap: 6px; }

.nav-link {
  position: relative;
  padding: 8px 16px;
  font-size: 16px;
  font-weight: 500;
  color: var(--text-main);
  opacity: 0.82;
  transition: opacity 0.25s, color 0.25s;
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 16px; right: 16px; bottom: 2px;
  height: 2px;
  background: var(--gold);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s var(--ease);
}
.nav-link:hover { opacity: 1; color: var(--gold-light); }
.nav-link:hover::after, .nav-link.active::after { transform: scaleX(1); }
.nav-link.active { color: var(--gold); opacity: 1; }

.nav-cta { padding: 10px 22px; font-size: 15px; }

.hamburger {
  display: none;
  width: 44px; height: 44px;
  background: rgba(212, 165, 55, 0.1);
  border: 1px solid rgba(212, 165, 55, 0.4);
  border-radius: 10px;
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  z-index: 120;
}
.hamburger span {
  width: 20px; height: 2px;
  background: var(--gold);
  border-radius: 2px;
  transition: transform 0.3s var(--ease), opacity 0.3s;
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============ Hero（全屏沉浸） ============ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: -60px 0 0 0;
  background-size: cover;
  background-position: center;
  will-change: transform;
  z-index: 0;
}
.hero-bg::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='g'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23g)' opacity='0.5'/%3E%3C/svg%3E");
  opacity: 0.06;
  mix-blend-mode: overlay;
}
.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  background:
    linear-gradient(to top, rgba(8, 20, 15, 0.96) 0%, rgba(11, 29, 23, 0.60) 30%, rgba(11, 29, 23, 0.16) 56%, rgba(11, 29, 23, 0.50) 100%),
    radial-gradient(ellipse 82% 66% at 50% 42%, transparent 40%, rgba(7, 17, 12, 0.78) 100%),
    linear-gradient(to bottom, rgba(8, 20, 15, 0.55), transparent 24%);
  box-shadow: inset 0 0 240px rgba(5, 14, 10, 0.92);
}
.hero-inner {
  position: relative;
  z-index: 2;
  padding: calc(var(--header-h) + 40px) 0 90px;
  width: 100%;
}
.hero-inner.center { text-align: center; }
.hero-eyebrow {
  display: inline-block;
  font-size: 14px;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--gold);
  border: 1px solid rgba(212, 165, 55, 0.5);
  padding: 6px 18px;
  border-radius: 999px;
  margin-bottom: 26px;
  background: rgba(27, 58, 47, 0.3);
  backdrop-filter: blur(4px);
}
.hero-title {
  font-size: 72px;
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: 2px;
  color: var(--text-main);
  max-width: 15em;
}
.hero-title .hl { color: var(--gold); }
.hero-sub {
  margin-top: 22px;
  font-size: 20px;
  font-weight: 300;
  color: var(--text-sub);
  max-width: 34em;
}
.center .hero-sub { margin-inline: auto; }
.hero-cta { margin-top: 38px; display: flex; gap: 16px; flex-wrap: wrap; }
.center .hero-cta { justify-content: center; }
.hero-scroll {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  color: var(--gold);
  font-size: 13px;
  letter-spacing: 3px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  opacity: 0.8;
}
.hero-scroll .mouse {
  width: 22px; height: 36px;
  border: 2px solid rgba(212, 165, 55, 0.7);
  border-radius: 12px;
  position: relative;
}
.hero-scroll .mouse::after {
  content: "";
  position: absolute;
  left: 50%; top: 7px;
  width: 4px; height: 8px;
  background: var(--gold);
  border-radius: 4px;
  transform: translateX(-50%);
  animation: scrollDot 1.6s infinite var(--ease);
}
@keyframes scrollDot {
  0% { transform: translate(-50%, 0); opacity: 1; }
  70% { transform: translate(-50%, 12px); opacity: 0; }
  100% { transform: translate(-50%, 0); opacity: 0; }
}

/* 内页 Hero（短版） */
.page-hero {
  position: relative;
  min-height: 52vh;
  display: flex;
  align-items: flex-end;
  padding: calc(var(--header-h) + 30px) 0 60px;
  overflow: hidden;
}
.page-hero .hero-bg { inset: 0; }
.page-title { font-size: 52px; font-weight: 900; letter-spacing: 2px; }
.page-title .hl { color: var(--gold); }
.page-desc { margin-top: 14px; color: var(--text-sub); font-size: 18px; max-width: 40em; }

/* ============ 区块通用 ============ */
.section { padding: 110px 0; position: relative; }
.section.alt { background: var(--green-800); }
.section.tint { background: linear-gradient(180deg, var(--green-800), var(--green-900)); }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 60px; }
.section-kicker {
  font-size: 14px;
  letter-spacing: 4px;
  color: var(--orange);
  text-transform: uppercase;
  font-weight: 700;
}
.section-head h2 {
  font-size: 48px;
  font-weight: 900;
  line-height: 1.2;
  margin-top: 12px;
  letter-spacing: 1px;
}
.section-head h2 .hl { color: var(--gold); }
.section-head p { margin-top: 16px; color: var(--text-sub); font-size: 17px; }

/* ============ 特性卡片 ============ */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.feature-card {
  position: relative;
  padding: 42px 32px;
  border-radius: var(--radius);
  background: var(--glass-bg);
  border: 1px solid rgba(212, 165, 55, 0.16);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  overflow: hidden;
  transition: transform 0.4s var(--ease), border-color 0.4s, box-shadow 0.4s;
}
.feature-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 0%, rgba(212, 165, 55, 0.12), transparent 70%);
  opacity: 0;
  transition: opacity 0.4s;
}
.feature-card:hover {
  transform: translateY(-6px);
  border-color: var(--gold);
  box-shadow: var(--shadow-lg);
}
.feature-card:hover::before { opacity: 1; }
.feature-icon {
  width: 64px; height: 64px;
  display: grid;
  place-items: center;
  border-radius: 16px;
  background: rgba(212, 165, 55, 0.12);
  border: 1px solid rgba(212, 165, 55, 0.4);
  margin-bottom: 22px;
}
.feature-icon svg { width: 34px; height: 34px; stroke: var(--gold); }
.feature-card h3 { font-size: 24px; font-weight: 800; margin-bottom: 10px; }
.feature-card p { color: var(--text-sub); font-size: 16px; }

/* ============ 游戏画面网格 ============ */
.screens-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.screen-card {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid rgba(212, 165, 55, 0.14);
  aspect-ratio: 16 / 9;
  cursor: pointer;
}
.screen-card img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease-out;
}
.screen-card:hover img { transform: scale(1.05); }
.screen-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: flex-end;
  padding: 20px;
  background: linear-gradient(to top, rgba(11, 29, 23, 0.9), transparent 60%);
  opacity: 0;
  transition: opacity 0.4s;
}
.screen-card:hover .screen-overlay { opacity: 1; }
.screen-overlay h4 { font-size: 18px; font-weight: 800; color: var(--gold-light); }
.screen-overlay span { font-size: 14px; color: var(--text-sub); }

/* ============ 恐龙5图鉴 ============ */
.dino-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 26px;
}
.dino-card {
  background: var(--green-ink);
  border: 1px solid rgba(212, 165, 55, 0.16);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.4s var(--ease), box-shadow 0.4s var(--ease), border-color 0.4s;
}
.dino-card:hover {
  transform: perspective(900px) rotateX(3deg) rotateY(-5deg) translateY(-6px);
  border-color: var(--gold);
  box-shadow: var(--shadow-lg);
}
.dino-thumb { aspect-ratio: 16 / 10; overflow: hidden; }
.dino-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease-out; }
.dino-card:hover .dino-thumb img { transform: scale(1.05); }
.dino-body { padding: 18px 20px 22px; }
.dino-body h4 { font-size: 20px; font-weight: 800; color: var(--gold); }
.dino-body .dino-en { font-size: 12px; color: var(--text-sub); letter-spacing: 1.5px; text-transform: uppercase; }
.dino-body p { font-size: 14.5px; color: var(--text-sub); margin-top: 8px; }

/* ============ 新闻 ============ */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}
.news-card {
  background: var(--green-ink);
  border: 1px solid rgba(212, 165, 55, 0.16);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.4s var(--ease), border-color 0.4s, box-shadow 0.4s;
}
.news-card:hover {
  transform: translateY(-6px);
  border-color: var(--gold);
  box-shadow: var(--shadow-lg);
}
.news-thumb { aspect-ratio: 16 / 9; overflow: hidden; }
.news-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease-out; }
.news-card:hover .news-thumb img { transform: scale(1.05); }
.news-body { padding: 22px 24px 26px; display: flex; flex-direction: column; flex: 1; }
.news-meta { display: flex; align-items: center; gap: 12px; font-size: 13px; color: var(--text-sub); margin-bottom: 12px; }
.news-tag {
  background: rgba(232, 89, 12, 0.16);
  color: var(--orange-light);
  padding: 2px 10px;
  border-radius: 999px;
  font-size: 12px;
}
.news-card h3 { font-size: 21px; font-weight: 800; line-height: 1.4; transition: color 0.25s; }
.news-card:hover h3 { color: var(--gold-light); }
.news-card p { font-size: 15px; color: var(--text-sub); margin-top: 10px; flex: 1; }
.news-more { margin-top: 18px; font-size: 15px; color: var(--gold); font-weight: 600; }
.news-more:hover { color: var(--orange-light); }
.center-gap { text-align: center; margin-top: 46px; }

/* ============ 新闻页列表 + 筛选 ============ */
.news-filter {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 44px;
}
.filter-btn {
  padding: 9px 24px;
  border-radius: 999px;
  border: 1px solid rgba(212, 165, 55, 0.4);
  background: transparent;
  color: var(--text-sub);
  font-size: 15px;
  cursor: pointer;
  transition: all 0.3s var(--ease);
}
.filter-btn:hover { color: var(--gold-light); border-color: var(--gold); }
.filter-btn.active { background: var(--orange); border-color: var(--orange); color: #fff; }
.news-list { display: flex; flex-direction: column; gap: 26px; max-width: 1000px; margin-inline: auto; }
.news-item {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 26px;
  background: var(--green-ink);
  border: 1px solid rgba(212, 165, 55, 0.16);
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  transition: transform 0.4s var(--ease), border-color 0.4s, box-shadow 0.4s;
}
.news-item:hover { transform: translateY(-5px); border-color: var(--gold); box-shadow: var(--shadow-lg); }
.news-item .news-thumb { aspect-ratio: auto; min-height: 190px; }
.news-item .news-meta { margin-bottom: 10px; }
.news-item h3 { font-size: 23px; font-weight: 800; transition: color 0.25s; }
.news-item:hover h3 { color: var(--gold-light); }
.news-item .abstract { font-size: 15.5px; color: var(--text-sub); margin-top: 10px; }
.news-item .news-more { margin-top: 16px; }

/* ============ 详情弹窗 ============ */
.modal {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.modal.open { display: flex; }
.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(8, 18, 14, 0.82);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  animation: fadeIn 0.3s var(--ease);
}
.modal-panel {
  position: relative;
  width: min(820px, 100%);
  max-height: 86vh;
  overflow-y: auto;
  background: var(--green-800);
  border: 1px solid rgba(212, 165, 55, 0.3);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  animation: riseIn 0.4s var(--ease);
}
.modal-panel img { width: 100%; height: 260px; object-fit: cover; }
.modal-content { padding: 30px 34px 36px; }
.modal-meta { display: flex; gap: 12px; align-items: center; margin-bottom: 14px; font-size: 14px; color: var(--text-sub); }
.modal-content h3 { font-size: 27px; font-weight: 900; line-height: 1.4; }
.modal-content .body { margin-top: 18px; color: #d8d8d8; font-size: 16px; line-height: 1.9; }
.modal-content .body p { margin-bottom: 14px; }
.modal-close {
  position: absolute;
  top: 16px; right: 16px;
  width: 40px; height: 40px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.3);
  background: rgba(11, 29, 23, 0.6);
  color: #fff;
  font-size: 20px;
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: background 0.25s, transform 0.25s;
  z-index: 2;
}
.modal-close:hover { background: var(--orange); transform: rotate(90deg); }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes riseIn { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: none; } }

/* ============ 关于页 ============ */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.split-media {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid rgba(212, 165, 55, 0.2);
  box-shadow: var(--shadow-lg);
}
.split-media img { width: 100%; height: 100%; object-fit: cover; }
.split-body h2 { font-size: 40px; font-weight: 900; line-height: 1.25; margin-bottom: 18px; }
.split-body h2 .hl { color: var(--gold); }
.split-body p { color: var(--text-sub); margin-bottom: 14px; font-size: 17px; }
.check-list li { position: relative; padding-left: 30px; margin-bottom: 10px; color: #d9e2dc; font-size: 16.5px; }
.check-list li::before {
  content: "";
  position: absolute;
  left: 2px; top: 8px;
  width: 12px; height: 12px;
  border-radius: 4px;
  background: linear-gradient(135deg, var(--gold), var(--orange));
}

/* 玩法模块 */
.play-module {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 54px;
  align-items: center;
  margin-bottom: 90px;
}
.play-module:last-child { margin-bottom: 0; }
.play-module.flip .play-media { order: 2; }
.play-media {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid rgba(212, 165, 55, 0.2);
  box-shadow: var(--shadow-lg);
}
.play-media img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease-out; }
.play-media:hover img { transform: scale(1.04); }
.play-text h3 { font-size: 32px; font-weight: 900; margin-bottom: 8px; }
.play-text h3 .hl { color: var(--gold); }
.play-text p { color: var(--text-sub); font-size: 17px; margin-bottom: 16px; }
.play-text ul li {
  position: relative;
  padding-left: 26px;
  color: #d9e2dc;
  margin-bottom: 8px;
  font-size: 16px;
}
.play-text ul li::before { content: "✦"; position: absolute; left: 0; color: var(--gold); }

/* 团队 */
.team-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 26px;
}
.team-card {
  text-align: center;
  background: var(--green-ink);
  border: 1px solid rgba(212, 165, 55, 0.16);
  border-radius: var(--radius);
  padding: 34px 20px 28px;
  transition: transform 0.4s var(--ease), border-color 0.4s, box-shadow 0.4s;
}
.team-card:hover { transform: translateY(-6px); border-color: var(--gold); box-shadow: var(--shadow-lg); }
.team-avatar {
  width: 90px; height: 90px;
  margin: 0 auto 18px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(212, 165, 55, 0.25), rgba(232, 89, 12, 0.2));
  border: 2px solid rgba(212, 165, 55, 0.5);
  display: grid;
  place-items: center;
  font-size: 32px;
  font-weight: 900;
  color: var(--gold);
}
.team-card h4 { font-size: 19px; font-weight: 800; }
.team-card .role { font-size: 13px; color: var(--orange-light); letter-spacing: 1px; margin-top: 4px; }
.team-card p { font-size: 14px; color: var(--text-sub); margin-top: 10px; }

/* 时间轴 */
.timeline { position: relative; max-width: 860px; margin: 0 auto; padding-left: 34px; }
.timeline::before {
  content: "";
  position: absolute;
  left: 10px; top: 6px; bottom: 6px;
  width: 2px;
  background: linear-gradient(to bottom, var(--gold), var(--orange));
  opacity: 0.5;
}
.timeline-item { position: relative; padding-bottom: 44px; }
.timeline-item:last-child { padding-bottom: 0; }
.timeline-item::before {
  content: "";
  position: absolute;
  left: -31px; top: 6px;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--green-900);
  border: 3px solid var(--gold);
  box-shadow: 0 0 0 4px rgba(212, 165, 55, 0.2);
}
.timeline-year { font-size: 14px; letter-spacing: 3px; color: var(--orange-light); font-weight: 700; }
.timeline-item h3 { font-size: 22px; font-weight: 800; margin-top: 4px; }
.timeline-item p { color: var(--text-sub); font-size: 16px; margin-top: 6px; max-width: 60em; }

/* ============ 联系页 ============ */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
  margin-bottom: 80px;
}
.contact-card {
  text-align: center;
  background: var(--green-ink);
  border: 1px solid rgba(212, 165, 55, 0.16);
  border-radius: var(--radius);
  padding: 36px 24px;
  transition: transform 0.4s var(--ease), border-color 0.4s, box-shadow 0.4s;
}
.contact-card:hover { transform: translateY(-6px); border-color: var(--gold); box-shadow: var(--shadow-lg); }
.contact-icon {
  width: 56px; height: 56px;
  margin: 0 auto 16px;
  border-radius: 14px;
  background: rgba(212, 165, 55, 0.12);
  border: 1px solid rgba(212, 165, 55, 0.4);
  display: grid;
  place-items: center;
}
.contact-icon svg { width: 26px; height: 26px; stroke: var(--gold); }
.contact-card h3 { font-size: 19px; font-weight: 800; }
.contact-card a, .contact-card span { font-size: 15px; color: var(--text-sub); display: inline-block; margin-top: 6px; }
.contact-card a:hover { color: var(--gold); }

.contact-layout {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 46px;
  align-items: start;
}
.form-card {
  background: var(--green-ink);
  border: 1px solid rgba(212, 165, 55, 0.2);
  border-radius: var(--radius);
  padding: 36px 34px;
}
.form-card h3 { font-size: 26px; font-weight: 900; margin-bottom: 6px; }
.form-card > p { color: var(--text-sub); font-size: 15px; margin-bottom: 26px; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 15px; font-weight: 600; margin-bottom: 8px; }
.form-group label .req { color: var(--orange-light); }
.form-group .hint { font-size: 13px; color: var(--text-sub); margin-top: 6px; }
.form-control {
  width: 100%;
  padding: 13px 16px;
  border-radius: 10px;
  border: 1px solid rgba(212, 165, 55, 0.28);
  background: rgba(11, 29, 23, 0.6);
  color: var(--text-main);
  font-size: 16px;
  font-family: var(--font);
  transition: border-color 0.25s, box-shadow 0.25s;
}
.form-control:focus {
  outline: none;
  border-color: var(--gold);
  box-shadow: 0 0 0 3px rgba(212, 165, 55, 0.2);
}
.form-control.invalid { border-color: var(--orange); box-shadow: 0 0 0 3px rgba(232, 89, 12, 0.18); }
textarea.form-control { resize: vertical; min-height: 140px; }
.form-error {
  display: none;
  font-size: 13.5px;
  color: var(--orange-light);
  margin-top: 7px;
}
.form-error.show { display: block; }
.form-submit { margin-top: 8px; width: 100%; }
.form-status {
  display: none;
  margin-top: 16px;
  padding: 13px 18px;
  border-radius: 10px;
  font-size: 15px;
}
.form-status.success {
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(72, 187, 120, 0.14);
  border: 1px solid rgba(72, 187, 120, 0.5);
  color: #8ee6b0;
}
.form-status.error {
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(232, 89, 12, 0.14);
  border: 1px solid rgba(232, 89, 12, 0.5);
  color: #ffb48a;
}
.form-status .ic { flex-shrink: 0; }
.spin {
  display: inline-block;
  width: 16px; height: 16px;
  border: 2px solid rgba(255, 255, 255, 0.4);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  vertical-align: -3px;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* FAQ */
.faq-list { max-width: 760px; margin-inline: auto; display: flex; flex-direction: column; gap: 14px; }
.faq-item {
  background: var(--green-ink);
  border: 1px solid rgba(212, 165, 55, 0.16);
  border-radius: 12px;
  overflow: hidden;
  transition: border-color 0.3s;
}
.faq-item.open { border-color: var(--gold); }
.faq-q {
  width: 100%;
  padding: 18px 22px;
  background: none;
  border: none;
  color: var(--text-main);
  font-size: 17px;
  font-weight: 700;
  font-family: var(--font);
  text-align: left;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}
.faq-q .arrow { color: var(--gold); transition: transform 0.3s var(--ease); font-size: 20px; }
.faq-item.open .faq-q .arrow { transform: rotate(45deg); }
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s var(--ease);
}
.faq-a p { padding: 0 22px 20px; color: var(--text-sub); font-size: 15.5px; }

/* 社交媒体（footer/info） */
.socials { display: flex; gap: 12px; }
.social-icon {
  width: 40px; height: 40px;
  border-radius: 50%;
  border: 1px solid rgba(212, 165, 55, 0.4);
  display: grid;
  place-items: center;
  color: var(--gold);
  font-size: 16px;
  transition: background 0.25s, color 0.25s, transform 0.25s;
}
.social-icon:hover { background: var(--orange); border-color: var(--orange); color: #fff; transform: translateY(-3px); }

/* ============ Footer ============ */
.footer {
  background: var(--green-ink);
  border-top: 1px solid rgba(212, 165, 55, 0.14);
  padding: 70px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 46px;
}
.footer .logo-text { font-size: 20px; }
.footer-brand p { color: var(--text-sub); font-size: 15px; margin-top: 14px; max-width: 30em; }
.footer-col h4 { font-size: 16px; color: var(--gold); letter-spacing: 2px; margin-bottom: 18px; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul a { color: var(--text-sub); font-size: 15px; transition: color 0.25s, padding-left 0.25s; }
.footer-col ul a:hover { color: var(--gold-light); padding-left: 6px; }
.footer-contact p { color: var(--text-sub); font-size: 15px; margin-bottom: 14px; line-height: 1.8; }
.footer-bottom {
  border-top: 1px solid rgba(212, 165, 55, 0.12);
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.footer-bottom p { color: #7a8b83; font-size: 13.5px; }

/* ============ 滚动淡入 ============ */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}
.reveal.visible { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: 0.08s; }
.reveal.d2 { transition-delay: 0.16s; }
.reveal.d3 { transition-delay: 0.24s; }
.reveal.d4 { transition-delay: 0.32s; }

/* 返回顶部 */
.back-top {
  position: fixed;
  right: 26px; bottom: 30px;
  width: 48px; height: 48px;
  border-radius: 50%;
  border: 1px solid rgba(212, 165, 55, 0.5);
  background: rgba(27, 58, 47, 0.85);
  color: var(--gold);
  font-size: 22px;
  cursor: pointer;
  z-index: 90;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: all 0.35s var(--ease);
  display: grid;
  place-items: center;
}
.back-top.show { opacity: 1; visibility: visible; transform: none; }
.back-top:hover { background: var(--orange); color: #fff; }

/* ============ 响应式：平板 ============ */
@media (max-width: 1023px) {
  body { font-size: 17px; }
  .hero-title { font-size: 52px; }
  .page-title { font-size: 42px; }
  .section-head h2 { font-size: 38px; }
  .section { padding: 90px 0; }
  .dino-grid { grid-template-columns: repeat(2, 1fr); }
  .news-grid { grid-template-columns: repeat(2, 1fr); }
  .team-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: repeat(2, 1fr); }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .content-wrap { grid-template-columns: 1fr; }
  .split, .play-module { grid-template-columns: 1fr; gap: 36px; }
  .play-module.flip .play-media { order: 0; }
  .contact-layout { grid-template-columns: 1fr; }
  .news-item { grid-template-columns: 1fr; }
  .news-item .news-thumb { aspect-ratio: 16 / 9; min-height: auto; }
}

/* ============ 响应式：移动端 ============ */
@media (max-width: 767px) {
  body { font-size: 16px; line-height: 1.7; }
  .nav-cta { display: none; }

  .hamburger { display: flex; }
  .main-nav {
    position: fixed;
    inset: 0;
    background: rgba(11, 29, 23, 0.97);
    -webkit-backdrop-filter: blur(16px);
    backdrop-filter: blur(16px);
    flex-direction: column;
    justify-content: center;
    gap: 10px;
    transform: translateX(100%);
    transition: transform 0.45s var(--ease);
    z-index: 110;
  }
  .main-nav.open { transform: none; }
  .nav-link { font-size: 26px; font-weight: 700; padding: 14px 20px; }
  .nav-link::after { display: none; }

  .hero-title { font-size: 40px; }
  .hero-sub { font-size: 17px; }
  .hero-inner { padding-bottom: 70px; }
  .hero-cta { flex-direction: column; align-items: flex-start; }
  .center .hero-cta, .center .hero-sub { margin-inline: auto; }
  .hero-cta .btn { width: 100%; }
  .center .hero-cta { align-items: stretch; }

  .page-title { font-size: 34px; }
  .page-desc { font-size: 16px; }
  .section-head h2 { font-size: 30px; }
  .section-head p { font-size: 15.5px; }
  .section { padding: 70px 0; }

  .features-grid, .screens-grid, .news-grid, .dino-grid, .team-grid, .contact-grid { grid-template-columns: 1fr; }
  .split-body h2 { font-size: 30px; }
  .play-text h3 { font-size: 26px; }
  .footer-grid { grid-template-columns: 1fr; gap: 36px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .form-card { padding: 26px 20px; }
  .back-top { right: 16px; bottom: 20px; }
}

/* ============ 新闻详情弹窗图片 ============ */
.modal-img {
  width: 100%;
  max-height: 240px;
  object-fit: cover;
  border-bottom: 1px solid rgba(212, 165, 55, 0.25);
  filter: saturate(0.95);
}

/* ============ Hero 增强：氛围光效 / 粒子 / 标题动效 ============ */
/* 前景层：光晕 + 粒子画布（位于遮罩之上、文字之下） */
.hero-fx {
  position: absolute;
  inset: 0;
  z-index: 1;
  overflow: hidden;
  pointer-events: none;
}
.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(70px);
  opacity: 0;
  animation: glowPulse 9s ease-in-out infinite;
  will-change: transform, opacity;
}
.glow--gold {
  width: 560px;
  height: 560px;
  top: 4%;
  left: -140px;
  background: radial-gradient(circle, rgba(212, 165, 55, 0.55) 0%, rgba(212, 165, 55, 0) 70%);
}
.glow--lava {
  width: 660px;
  height: 660px;
  bottom: -180px;
  right: -160px;
  background: radial-gradient(circle, rgba(232, 89, 12, 0.50) 0%, rgba(232, 89, 12, 0) 70%);
  animation-delay: 1.4s;
}
@keyframes glowPulse {
  0%, 100% { opacity: 0.32; transform: scale(1); }
  50% { opacity: 0.72; transform: scale(1.12); }
}

/* 粒子画布 */
.hero-particles {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

/* 主标题：逐行模糊淡入 + 位移揭示 */
.hero--fx .anim-hero .h-line {
  display: block;
  opacity: 0;
  filter: blur(12px);
  transform: translateY(40px);
  animation: heroLineIn 1s cubic-bezier(0.2, 0.72, 0.24, 1) forwards;
}
.hero--fx .anim-hero .h-line:nth-child(1) { animation-delay: 0.15s; }
.hero--fx .anim-hero .h-line:nth-child(2) { animation-delay: 0.5s; }
@keyframes heroLineIn {
  to { opacity: 1; filter: blur(0); transform: translateY(0); }
}

/* 副标题 / CTA / 眉标：依次进场 */
.hero--fx .anim-seq {
  opacity: 0;
  animation: heroFadeUp 0.85s cubic-bezier(0.2, 0.72, 0.24, 1) forwards;
}
.hero--fx .anim-seq.a1 { animation-delay: 0.95s; }
.hero--fx .anim-seq.a2 { animation-delay: 1.18s; }
.hero--fx .anim-seq.a3 { animation-delay: 1.42s; }
@keyframes heroFadeUp {
  from { opacity: 0; transform: translateY(34px); }
  to { opacity: 1; transform: none; }
}

/* CTA 主按钮呼吸光晕 */
.btn-breathe { animation: btnGlow 2.6s ease-in-out infinite; }
@keyframes btnGlow {
  0%, 100% {
    box-shadow: 0 12px 30px rgba(232, 89, 12, 0.30), 0 0 0 0 rgba(232, 89, 12, 0.28);
  }
  50% {
    box-shadow: 0 12px 38px rgba(232, 89, 12, 0.58), 0 0 0 12px rgba(232, 89, 12, 0);
  }
}

/* 移动端简化：光晕收紧，粒子数量由 JS 控制 */
@media (max-width: 767px) {
  .glow--gold { width: 300px; height: 300px; top: 0; left: -90px; }
  .glow--lava { width: 340px; height: 340px; bottom: -130px; right: -110px; }
  .hero-glow { filter: blur(44px); }
  .hero--fx .anim-hero .h-line { transform: translateY(26px); }
  .hero--fx .anim-seq { transform: translateY(22px); }
}

/* 尊重系统减弱动态效果偏好 */
@media (prefers-reduced-motion: reduce) {
  .hero--fx .anim-hero .h-line,
  .hero--fx .anim-seq { animation: none; opacity: 1; filter: none; transform: none; }
  .hero-glow, .btn-breathe { animation: none; opacity: 0.5; }
}

/* ============ 联系方式：邮箱链接 / 群号一键复制按钮 ============ */
.footer-contact .f-link {
  color: var(--gold-light);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color 0.2s var(--ease);
}
.footer-contact .f-link:hover { color: #fff; }

.q-copy {
  margin-left: 8px;
  padding: 1px 10px;
  font-size: 12px;
  line-height: 20px;
  vertical-align: 1px;
  color: var(--gold-light);
  background: rgba(212, 165, 55, 0.14);
  border: 1px solid rgba(212, 165, 55, 0.45);
  border-radius: 999px;
  cursor: pointer;
  transition: background 0.2s var(--ease), color 0.2s var(--ease);
  white-space: nowrap;
  font-family: inherit;
}
.q-copy:hover { background: rgba(212, 165, 55, 0.30); color: #fff; }
.q-copy.copied { background: rgba(212, 165, 55, 0.55); color: #fff; border-color: transparent; }
.contact-card .q-copy { margin-left: 10px; }

/* ============ 世界观单图：split-media 内大图全宽展示 ============ */
.world-media img {
  width: 100%;
  height: auto;
  object-fit: cover;
  display: block;
  border-radius: calc(var(--radius) - 4px);
}