/* =========================================================
   遮天：凡尘一叶 · 官网样式
   主题：星空墨蓝 + 鎏金 仙侠暗色系
   ========================================================= */

:root {
  --bg: #070b16;
  --bg-2: #0b1122;
  --panel: rgba(16, 24, 46, 0.72);
  --panel-solid: #101830;
  --line: rgba(212, 175, 96, 0.22);
  --gold: #e8c56a;
  --gold-2: #f6df9a;
  --gold-deep: #b98a2f;
  --ink: #e9edf7;
  --ink-dim: #a7b1c9;
  --ink-faint: #6d7891;
  --blue-glow: rgba(88, 118, 255, 0.35);
  --purple-glow: rgba(150, 92, 255, 0.28);
  --radius: 16px;
  --serif: "Noto Serif SC", "Source Han Serif SC", "STZhongsong", "SimSun", serif;
  --sans: "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  --nav-h: 64px;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

.ico { width: 1em; height: 1em; vertical-align: -0.12em; }

::selection { background: rgba(232, 197, 106, 0.35); color: #fff; }

/* ---------- 星空背景 ---------- */
.starfield {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background:
    radial-gradient(1200px 700px at 75% -10%, rgba(64, 84, 180, 0.20), transparent 60%),
    radial-gradient(900px 600px at 10% 30%, rgba(120, 70, 200, 0.12), transparent 60%),
    linear-gradient(180deg, #070b16 0%, #0a0f20 55%, #070a14 100%);
}
.stars {
  position: absolute; inset: -50%;
  background-repeat: repeat;
}
.stars-1 {
  background-image:
    radial-gradient(1.5px 1.5px at 20px 30px, rgba(255,255,255,0.85) 50%, transparent 51%),
    radial-gradient(1px 1px at 120px 90px, rgba(255,255,255,0.55) 50%, transparent 51%),
    radial-gradient(2px 2px at 220px 160px, rgba(246,223,154,0.75) 50%, transparent 51%),
    radial-gradient(1px 1px at 320px 60px, rgba(255,255,255,0.45) 50%, transparent 51%),
    radial-gradient(1.5px 1.5px at 60px 220px, rgba(255,255,255,0.6) 50%, transparent 51%);
  background-size: 400px 300px;
  animation: twinkle 6s ease-in-out infinite alternate;
}
.stars-2 {
  background-image:
    radial-gradient(1px 1px at 80px 40px, rgba(255,255,255,0.4) 50%, transparent 51%),
    radial-gradient(1px 1px at 260px 140px, rgba(246,223,154,0.5) 50%, transparent 51%),
    radial-gradient(1.5px 1.5px at 180px 260px, rgba(255,255,255,0.35) 50%, transparent 51%);
  background-size: 560px 420px;
  animation: twinkle 9s ease-in-out infinite alternate-reverse;
}
.nebula {
  position: absolute; border-radius: 50%; filter: blur(90px); opacity: 0.5;
}
.nebula-1 { width: 520px; height: 520px; left: -160px; top: 18%; background: var(--purple-glow); animation: drift 26s ease-in-out infinite alternate; }
.nebula-2 { width: 640px; height: 640px; right: -200px; top: 55%; background: var(--blue-glow); animation: drift 32s ease-in-out infinite alternate-reverse; }

@keyframes twinkle { from { opacity: 0.55; } to { opacity: 1; } }
@keyframes drift { from { transform: translate(0, 0); } to { transform: translate(70px, -50px); } }

/* ---------- 布局基础 ---------- */
main, section, footer, header { position: relative; z-index: 1; }

.section { padding: 88px 24px; max-width: 1180px; margin: 0 auto; }

.section-title { text-align: center; margin-bottom: 48px; }
.section-title .en {
  font-family: var(--serif);
  letter-spacing: 0.35em;
  text-transform: uppercase;
  font-size: 12px;
  color: var(--gold);
  opacity: 0.8;
  margin-bottom: 10px;
}
.section-title h2 {
  font-family: var(--serif);
  font-size: clamp(28px, 4vw, 40px);
  letter-spacing: 0.12em;
  background: linear-gradient(180deg, #fdf3d3 20%, var(--gold) 70%, var(--gold-deep) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.section-title h2::after {
  content: "";
  display: block;
  width: 64px; height: 3px;
  margin: 14px auto 0;
  border-radius: 2px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
}
.section-title p { color: var(--ink-dim); margin-top: 12px; font-size: 15px; }
.section-title.left { text-align: left; }
.section-title.left h2::after { margin-left: 0; }

.highlight { color: var(--gold-2); font-weight: 600; }

/* ---------- 导航 ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: var(--nav-h);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 28px;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background 0.3s, border-color 0.3s;
}
.nav.scrolled {
  background: rgba(7, 11, 22, 0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom-color: var(--line);
}
.nav.menu-open {
  background: rgba(7, 11, 22, 0.97);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom-color: var(--line);
}
.nav-logo { display: flex; align-items: center; gap: 10px; }
.nav-logo img {
  width: 40px; height: 40px; border-radius: 9px;
  border: 1px solid var(--line);
  box-shadow: 0 0 14px rgba(232, 197, 106, 0.25);
}
.nav-logo span {
  font-family: var(--serif);
  font-size: 17px; font-weight: 700; letter-spacing: 0.08em;
  background: linear-gradient(180deg, #fdf3d3, var(--gold));
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
  white-space: nowrap;
}
.nav-links { display: flex; align-items: center; gap: 6px; }
.nav-links a {
  position: relative;
  padding: 8px 14px;
  font-size: 15px;
  color: var(--ink-dim);
  border-radius: 8px;
  transition: color 0.25s;
  white-space: nowrap;
}
.nav-links a::after {
  content: "";
  position: absolute; left: 14px; right: 14px; bottom: 2px; height: 2px;
  background: linear-gradient(90deg, var(--gold), var(--gold-2));
  transform: scaleX(0); transform-origin: center;
  transition: transform 0.25s;
  border-radius: 2px;
}
.nav-links a:hover, .nav-links a.active { color: var(--gold-2); }
.nav-links a:hover::after, .nav-links a.active::after { transform: scaleX(1); }

.nav-burger {
  display: none;
  width: 40px; height: 40px;
  flex-direction: column; align-items: center; justify-content: center; gap: 5px;
  cursor: pointer;
}
.nav-burger span {
  width: 22px; height: 2px;
  background: var(--ink);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}
.nav-burger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-burger.open span:nth-child(2) { opacity: 0; }
.nav-burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  display: flex; align-items: center; justify-content: center;
  padding: calc(var(--nav-h) + 48px) 24px 90px;
  overflow: hidden;
}
.hero-bg {
  position: absolute; inset: -40px; z-index: 0;
  background-image:
    linear-gradient(180deg, rgba(7,11,22,0.72) 0%, rgba(7,11,22,0.78) 55%, rgba(7,11,22,0.97) 100%),
    url("../images/banner/banner1fbfe47479d4862d325033448f5e7f5b1789712371.jpg");
  background-size: cover;
  background-position: center 30%;
  animation: heroZoom 18s ease-in-out infinite alternate;
}
@keyframes heroZoom { from { transform: scale(1); } to { transform: scale(1.07); } }

.hero-inner { position: relative; z-index: 1; max-width: 860px; text-align: center; }

.hero-tag {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 7px 18px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(16, 24, 46, 0.6);
  color: var(--gold-2);
  font-size: 14px; letter-spacing: 0.1em;
  margin-bottom: 26px;
}
.hero-tag .ico { color: var(--gold); }

.hero-title {
  font-family: var(--serif);
  font-size: clamp(40px, 8vw, 76px);
  font-weight: 900;
  letter-spacing: 0.06em;
  line-height: 1.15;
  background: linear-gradient(180deg, #ffffff 12%, #fdf3d3 45%, var(--gold) 85%, var(--gold-deep) 100%);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 4px 22px rgba(0, 0, 0, 0.6));
}
.hero-title .dot { color: var(--gold); -webkit-text-fill-color: var(--gold); }

.hero-sub {
  margin-top: 14px;
  font-family: var(--serif);
  font-size: clamp(16px, 2.4vw, 22px);
  letter-spacing: 0.3em;
  color: var(--ink);
  text-shadow: 0 2px 12px rgba(0,0,0,0.6);
}
.hero-desc {
  margin: 18px auto 0;
  max-width: 620px;
  color: var(--ink-dim);
  font-size: 15px;
  text-shadow: 0 2px 10px rgba(0,0,0,0.6);
}

.hero-promo { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; margin-top: 26px; }
.promo-item {
  padding: 8px 18px;
  border-radius: 10px;
  background: linear-gradient(180deg, rgba(232,197,106,0.16), rgba(232,197,106,0.06));
  border: 1px solid var(--line);
  color: var(--ink-dim);
  font-size: 14px;
}
.promo-item b {
  color: var(--gold-2);
  font-size: 18px;
  font-weight: 800;
  padding: 0 2px;
  text-shadow: 0 0 16px rgba(232, 197, 106, 0.5);
}

.hero-countdown {
  margin: 30px auto 0;
  max-width: 520px;
  padding: 18px 26px;
  border-radius: var(--radius);
  background: var(--panel);
  border: 1px solid var(--line);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 14px 44px rgba(0,0,0,0.45), inset 0 1px 0 rgba(255,255,255,0.05);
}
.cd-label {
  display: inline-flex; align-items: center; gap: 7px;
  font-size: 13px; letter-spacing: 0.2em;
  color: var(--gold);
}
.cd-timer { display: flex; justify-content: center; gap: 10px; margin-top: 12px; }
.cd-cell {
  min-width: 72px;
  padding: 8px 6px 6px;
  border-radius: 12px;
  background: rgba(7, 11, 22, 0.65);
  border: 1px solid var(--line);
}
.cd-cell b {
  display: block;
  font-size: 30px; font-weight: 800; line-height: 1.1;
  font-variant-numeric: tabular-nums;
  color: var(--gold-2);
  text-shadow: 0 0 18px rgba(232, 197, 106, 0.4);
}
.cd-cell i { font-style: normal; font-size: 12px; color: var(--ink-faint); letter-spacing: 0.2em; }
.cd-date { margin-top: 12px; font-size: 13px; color: var(--ink-dim); letter-spacing: 0.08em; }

.hero-actions { display: flex; justify-content: center; gap: 16px; margin-top: 32px; flex-wrap: wrap; }

.hero-info {
  display: flex; flex-wrap: wrap; justify-content: center; gap: 8px 26px;
  margin-top: 26px;
  font-size: 13.5px; color: var(--ink-faint);
}
.hero-info b { color: var(--ink-dim); font-weight: 600; }

.hero-scroll {
  position: absolute; left: 50%; bottom: 22px; transform: translateX(-50%);
  display: flex; align-items: center; gap: 8px;
  color: var(--ink-faint); font-size: 12px; letter-spacing: 0.25em;
  z-index: 1;
}
.hero-scroll i {
  width: 1px; height: 34px;
  background: linear-gradient(180deg, transparent, var(--gold));
  animation: scrollPulse 1.8s ease-in-out infinite;
}
@keyframes scrollPulse { 0%, 100% { opacity: 0.3; transform: scaleY(0.6); } 50% { opacity: 1; transform: scaleY(1); } }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 34px;
  border-radius: 999px;
  font-size: 16px; font-weight: 700; letter-spacing: 0.12em;
  cursor: pointer;
  transition: transform 0.25s, box-shadow 0.25s, background 0.25s, border-color 0.25s;
  user-select: none;
}
.btn:active { transform: scale(0.97); }
.btn .ico { font-size: 18px; }

.btn-primary {
  color: #241a05;
  background: linear-gradient(180deg, var(--gold-2) 0%, var(--gold) 45%, var(--gold-deep) 100%);
  border: none;
  box-shadow: 0 8px 28px rgba(232, 197, 106, 0.35), inset 0 1px 0 rgba(255,255,255,0.6);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 36px rgba(232, 197, 106, 0.5); }

.btn-ghost {
  color: var(--gold-2);
  background: rgba(232, 197, 106, 0.08);
  border: 1px solid var(--line);
}
.btn-ghost:hover { background: rgba(232, 197, 106, 0.16); border-color: rgba(232, 197, 106, 0.5); transform: translateY(-2px); }

.btn-lg { padding: 15px 42px; font-size: 17px; }
.btn-sm { padding: 9px 24px; font-size: 14px; }

/* ---------- 二维码 ---------- */
.qr-wrap { position: relative; display: inline-flex; }
.qr-pop {
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  padding-bottom: 10px;
  opacity: 0; visibility: hidden;
  transition: opacity 0.25s, transform 0.25s, visibility 0.25s;
  z-index: 40;
}
.qr-wrap:hover .qr-pop,
.qr-wrap:focus-within .qr-pop {
  opacity: 1; visibility: visible;
  transform: translateX(-50%) translateY(0);
}
.qr-inner {
  position: relative;
  padding: 12px;
  background: #fff;
  border-radius: 14px;
  box-shadow: 0 18px 50px rgba(0,0,0,0.5);
}
.qr-inner::after {
  content: "";
  position: absolute; top: 100%; left: 50%; transform: translateX(-50%);
  border: 7px solid transparent;
  border-top-color: #fff;
}
.qr-box { line-height: 0; border-radius: 6px; overflow: hidden; }
.qr-box img, .qr-box canvas { display: block; }
.qr-tip {
  margin-top: 8px;
  text-align: center;
  font-size: 12px; color: #3a4152;
  letter-spacing: 0.08em;
  white-space: nowrap;
}

/* ---------- 游戏介绍 ---------- */
.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  gap: 48px;
  align-items: center;
}
.about-media {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: 0 22px 60px rgba(0,0,0,0.5);
}
.about-media img { width: 100%; transition: transform 0.6s ease; }
.about-media:hover img { transform: scale(1.04); }
.about-badge {
  position: absolute; left: 16px; top: 16px;
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 13px; letter-spacing: 0.1em;
  color: #241a05; font-weight: 700;
  background: linear-gradient(180deg, var(--gold-2), var(--gold-deep));
  box-shadow: 0 4px 16px rgba(0,0,0,0.4);
}
.about-text h3 {
  font-family: var(--serif);
  font-size: clamp(22px, 3vw, 30px);
  letter-spacing: 0.14em;
  color: var(--gold-2);
  margin-bottom: 18px;
}
.about-text p { color: var(--ink-dim); margin-bottom: 14px; }
.about-points { list-style: none; margin-top: 22px; display: grid; gap: 14px; }
.about-points li {
  display: flex; align-items: center; gap: 12px;
  color: var(--ink);
  font-size: 15px;
}
.about-points .ico {
  flex: none;
  width: 34px; height: 34px; padding: 7px;
  border-radius: 10px;
  color: var(--gold);
  background: rgba(232, 197, 106, 0.1);
  border: 1px solid var(--line);
}

/* ---------- 特色玩法 ---------- */
.features { max-width: 1280px; }
.feature-cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 26px;
}
.feature-card {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: 0 18px 50px rgba(0,0,0,0.45);
  transition: transform 0.35s ease, box-shadow 0.35s ease;
}
.feature-card:hover { transform: translateY(-8px); box-shadow: 0 28px 70px rgba(0,0,0,0.6), 0 0 40px rgba(232,197,106,0.12); }
.feature-card img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease; }
.feature-card:hover img { transform: scale(1.05); }
.feature-mask {
  position: absolute; left: 0; right: 0; bottom: 0;
  padding: 60px 20px 20px;
  background: linear-gradient(180deg, transparent, rgba(5, 8, 18, 0.55) 40%, rgba(5, 8, 18, 0.92));
}
.feature-mask h3 {
  font-family: var(--serif);
  font-size: 19px; letter-spacing: 0.12em;
  color: var(--gold-2);
}
.feature-mask p { margin-top: 6px; font-size: 13px; color: var(--ink-dim); }

/* ---------- 上线福利 ---------- */
.benefits { max-width: 1280px; }
.benefit-cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}
.benefit-card {
  position: relative;
  padding: 30px 26px 26px;
  border-radius: var(--radius);
  background: var(--panel);
  border: 1px solid var(--line);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  overflow: hidden;
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}
.benefit-card::before {
  content: "";
  position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
  opacity: 0;
  transition: opacity 0.3s;
}
.benefit-card:hover { transform: translateY(-6px); border-color: rgba(232,197,106,0.45); box-shadow: 0 18px 44px rgba(0,0,0,0.45); }
.benefit-card:hover::before { opacity: 1; }
.benefit-card .num {
  display: block;
  font-family: var(--serif);
  font-size: 34px; font-weight: 900; line-height: 1;
  background: linear-gradient(180deg, #fdf3d3, var(--gold-deep));
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.benefit-card .num .unit { font-size: 18px; margin-left: 4px; }
.benefit-card .b-icon {
  position: absolute; right: 22px; top: 24px;
  width: 44px; height: 44px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 12px;
  color: var(--gold);
  background: rgba(232, 197, 106, 0.1);
  border: 1px solid var(--line);
}
.benefit-card .b-icon .ico { font-size: 22px; }
.benefit-card h4 {
  margin: 14px 0 8px;
  font-size: 17px; letter-spacing: 0.08em;
  color: var(--ink);
}
.benefit-card p { font-size: 13.5px; color: var(--ink-dim); }

.benefit-banner {
  margin-top: 26px;
  padding: 24px 30px;
  border-radius: var(--radius);
  text-align: center;
  background: linear-gradient(135deg, rgba(232,197,106,0.14), rgba(88,118,255,0.10));
  border: 1px solid var(--line);
}
.benefit-banner h4 {
  font-family: var(--serif);
  font-size: 20px; letter-spacing: 0.2em;
  color: var(--gold-2);
}
.benefit-banner p { margin-top: 8px; font-size: 14px; color: var(--ink-dim); }

/* ---------- 精彩截图 ---------- */
.gallery { max-width: 1280px; }
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 16px;
}
.gallery-item {
  position: relative;
  grid-column: span 2;
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid var(--line);
  cursor: zoom-in;
  box-shadow: 0 12px 34px rgba(0,0,0,0.4);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.gallery-item:nth-child(4), .gallery-item:nth-child(5) { grid-column: span 3; }
.gallery-item:hover { transform: translateY(-5px); box-shadow: 0 20px 48px rgba(0,0,0,0.55), 0 0 30px rgba(232,197,106,0.1); }
.gallery-item img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 16 / 9; transition: transform 0.5s ease; }
.gallery-item:hover img { transform: scale(1.05); }

/* ---------- 宣传视频 ---------- */
.video-box {
  max-width: 960px;
  margin: 0 auto;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: 0 24px 70px rgba(0,0,0,0.55), 0 0 60px rgba(88, 118, 255, 0.12);
  background: #000;
}
.video-box video { display: block; width: 100%; aspect-ratio: 16 / 9; }

/* ---------- 新手攻略 ---------- */
.guide-cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}
.guide-card {
  padding: 26px 24px;
  border-radius: var(--radius);
  background: var(--panel);
  border: 1px solid var(--line);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: transform 0.3s ease, border-color 0.3s ease;
}
.guide-card:hover { transform: translateY(-6px); border-color: rgba(232,197,106,0.45); }
.guide-head { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.guide-tag {
  flex: none;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 12.5px; font-weight: 700; letter-spacing: 0.1em;
  color: #241a05;
  background: linear-gradient(180deg, var(--gold-2), var(--gold-deep));
}
.guide-card h3 { font-family: var(--serif); font-size: 18px; letter-spacing: 0.08em; color: var(--ink); }
.guide-line { font-size: 14px; color: var(--gold-2); margin-bottom: 10px; }
.guide-card p:not(.guide-line) { font-size: 13.5px; color: var(--ink-dim); }

.guide-tips {
  margin-top: 26px;
  padding: 24px 30px;
  border-radius: var(--radius);
  background: var(--panel);
  border: 1px solid var(--line);
  display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap;
}
.guide-tips h4 {
  display: flex; align-items: center; gap: 8px;
  font-size: 16px; letter-spacing: 0.1em; color: var(--gold-2);
  width: 100%;
  margin-bottom: 4px;
}
.guide-tips h4 .ico { font-size: 20px; }
.guide-tips p { flex: 1 1 320px; font-size: 14px; color: var(--ink-dim); }

/* ---------- 预约下载 ---------- */
.launch { padding-bottom: 110px; }
.launch-grid {
  position: relative;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
  gap: 40px;
  align-items: center;
}
.launch-art {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: 0 24px 70px rgba(0,0,0,0.55);
  max-height: 480px;
}
.launch-art img { width: 100%; height: 100%; object-fit: cover; object-position: top; }
.launch-promo { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 28px; }
.launch-promo span {
  padding: 8px 18px;
  border-radius: 10px;
  background: rgba(232, 197, 106, 0.08);
  border: 1px solid var(--line);
  color: var(--ink-dim);
  font-size: 14px;
}
.launch-promo b { color: var(--gold-2); font-size: 17px; padding: 0 2px; }
.launch-row { display: flex; align-items: center; gap: 32px; flex-wrap: wrap; }
.launch-actions { display: flex; flex-wrap: wrap; gap: 16px; }
.launch-qr { text-align: center; }
.launch-qr .qr-box {
  display: inline-block;
  padding: 10px;
  background: #fff;
  border-radius: 14px;
  box-shadow: 0 14px 40px rgba(0,0,0,0.45);
}
.launch-qr span {
  display: block;
  margin-top: 10px;
  font-size: 12.5px; color: var(--ink-dim);
  letter-spacing: 0.1em;
}
.launch-note { margin-top: 22px; font-size: 12.5px; color: var(--ink-faint); }

/* ---------- 页脚 ---------- */
.footer {
  border-top: 1px solid var(--line);
  padding: 44px 24px 40px;
  text-align: center;
  background: rgba(5, 8, 16, 0.75);
}
.footer-logo {
  display: inline-flex; align-items: center; gap: 14px;
  text-align: left;
}
.footer-logo img {
  width: 52px; height: 52px; border-radius: 12px;
  border: 1px solid var(--line);
}
.footer-logo b {
  display: block;
  font-family: var(--serif);
  font-size: 17px; letter-spacing: 0.1em;
  color: var(--gold-2);
}
.footer-logo i {
  font-style: normal;
  font-size: 12.5px; color: var(--ink-faint); letter-spacing: 0.06em;
}
.footer-tip {
  max-width: 760px;
  margin: 22px auto 0;
  font-size: 12px; color: var(--ink-faint); letter-spacing: 0.05em;
}
.footer-copy { margin-top: 10px; font-size: 12px; color: var(--ink-faint); }

/* ---------- 灯箱 ---------- */
.lightbox {
  position: fixed; inset: 0; z-index: 200;
  display: flex; align-items: center; justify-content: center;
  background: rgba(4, 6, 12, 0.92);
  opacity: 0; visibility: hidden;
  transition: opacity 0.3s, visibility 0.3s;
}
.lightbox.open { opacity: 1; visibility: visible; }
.lightbox img {
  max-width: min(92vw, 1100px);
  max-height: 86vh;
  border-radius: 10px;
  border: 1px solid var(--line);
  box-shadow: 0 30px 90px rgba(0,0,0,0.8);
}
.lightbox-close, .lightbox-nav {
  position: absolute;
  display: flex; align-items: center; justify-content: center;
  width: 48px; height: 48px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: rgba(16, 24, 46, 0.8);
  color: var(--gold-2);
  cursor: pointer;
  transition: background 0.25s, transform 0.25s;
}
.lightbox-close:hover, .lightbox-nav:hover { background: rgba(232, 197, 106, 0.2); transform: scale(1.06); }
.lightbox-close { top: 22px; right: 22px; }
.lightbox-nav { top: 50%; transform: translateY(-50%); }
.lightbox-nav:hover { transform: translateY(-50%) scale(1.06); }
.lightbox-prev { left: 20px; }
.lightbox-next { right: 20px; }
.lightbox .ico { font-size: 22px; }

/* ---------- 返回顶部 ---------- */
.backtop {
  position: fixed; right: 22px; bottom: 26px; z-index: 90;
  width: 46px; height: 46px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--line);
  background: rgba(16, 24, 46, 0.85);
  color: var(--gold-2);
  cursor: pointer;
  opacity: 0; visibility: hidden;
  transition: opacity 0.3s, visibility 0.3s, transform 0.25s, background 0.25s;
}
.backtop.show { opacity: 1; visibility: visible; }
.backtop:hover { background: rgba(232, 197, 106, 0.2); transform: translateY(-3px); }
.backtop .ico { font-size: 20px; }

/* ---------- 滚动显现动画 ---------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .hero-bg, .stars, .nebula, .hero-scroll i { animation: none; }
  html { scroll-behavior: auto; }
}

/* =========================================================
   响应式
   ========================================================= */
@media (max-width: 1024px) {
  .about-grid { grid-template-columns: 1fr; gap: 32px; }
  .about-media { width: 100%; max-width: 100%; }
  .launch-grid { grid-template-columns: 1fr; }
  .launch-art { display: none; }
}

@media (max-width: 900px) {
  .nav-links {
    position: fixed;
    top: var(--nav-h); left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    padding: 12px 18px 18px;
    background: rgba(7, 11, 22, 0.97);
    border-bottom: 1px solid var(--line);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    transform: translateY(-12px);
    opacity: 0; visibility: hidden;
    transition: transform 0.3s, opacity 0.3s, visibility 0.3s;
  }
  .nav-links.open { transform: none; opacity: 1; visibility: visible; }
  .nav-links a { padding: 12px 14px; font-size: 16px; }
  .nav-links a::after { display: none; }
  .nav-burger { display: flex; }
  .qr-pop { display: none; }

  .feature-cards { grid-template-columns: 1fr; width: 100%; }
  .benefit-cards { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .guide-cards { grid-template-columns: 1fr; width: 100%; }

  .gallery-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .gallery-item, .gallery-item:nth-child(4), .gallery-item:nth-child(5) { grid-column: span 1; }

  .section { padding: 64px 20px; }
}

@media (max-width: 600px) {
  body { font-size: 15px; }
  .nav { padding: 0 16px; }
  .nav-logo span { font-size: 15px; }
  .nav-logo img { width: 34px; height: 34px; }

  .hero { padding-top: calc(var(--nav-h) + 36px); padding-bottom: 72px; }
  .hero-bg {
    background-image:
      linear-gradient(180deg, rgba(7,11,22,0.74) 0%, rgba(7,11,22,0.8) 55%, rgba(7,11,22,0.97) 100%),
      url("../images/banner/bannerb725a4790da063dea403afc31e8a68931789712377.jpg");
    background-position: center top;
  }
  .hero-title { font-size: clamp(34px, 10.5vw, 44px); }
  .hero-sub { letter-spacing: 0.2em; font-size: 15px; }
  .hero-promo { gap: 8px; }
  .promo-item { padding: 7px 13px; font-size: 13px; }
  .promo-item b { font-size: 16px; }

  .hero-countdown { padding: 14px 14px; }
  .cd-cell { min-width: 60px; }
  .cd-cell b { font-size: 24px; }
  .cd-timer { gap: 7px; }

  .hero-actions { width: 100%; }
  .hero-actions .btn { width: 100%; }
  .hero-actions .qr-wrap { width: 100%; }
  .hero-info { gap: 6px 16px; font-size: 12.5px; }

  .section { padding: 52px 16px; }
  .section-title { margin-bottom: 34px; }

  .benefit-cards { grid-template-columns: 1fr; }
  .benefit-banner { padding: 20px 18px; }

  .launch { padding-bottom: 80px; }
  .launch-actions { width: 100%; }
  .launch-actions .btn { width: 100%; }
  .launch-qr { margin: 0 auto; }

  .lightbox-nav { width: 42px; height: 42px; }
  .lightbox-prev { left: 10px; }
  .lightbox-next { right: 10px; }

  .backtop { right: 14px; bottom: 18px; }
}