/* ========== 口袋精灵2 · 样式 ========== */
:root {
  --bg: #0d1330;
  --bg-2: #131b42;
  --bg-3: #1a2454;
  --card: #16204a;
  --line: rgba(255, 255, 255, 0.08);
  --text: #eef1ff;
  --muted: #9aa3c7;
  --yellow: #ffd94a;
  --orange: #ff7a1a;
  --red: #ff4757;
  --grad: linear-gradient(120deg, #ffd94a 0%, #ff7a1a 100%);
  --shadow: 0 18px 48px rgba(3, 8, 32, 0.55);
  --radius: 18px;
}

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

html { scroll-behavior: smooth; scroll-padding-top: 76px; }

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

.container { width: min(1200px, 92%); margin: 0 auto; }

/* 氛围光 */
.ambient-glow {
  position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background:
    radial-gradient(600px 420px at 12% -6%, rgba(255, 122, 26, 0.22), transparent 65%),
    radial-gradient(700px 500px at 88% 12%, rgba(255, 217, 74, 0.12), transparent 65%),
    radial-gradient(800px 600px at 50% 110%, rgba(58, 92, 255, 0.16), transparent 60%),
    var(--bg);
}

/* ========== 导航 ========== */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  transition: background 0.3s, box-shadow 0.3s, backdrop-filter 0.3s;
}
.navbar.is-scrolled {
  background: rgba(13, 19, 48, 0.86);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 6px 24px rgba(3, 8, 32, 0.4);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  width: min(1240px, 94%); margin: 0 auto;
  display: flex; align-items: center; gap: 24px;
  height: 68px;
}
.brand { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.brand-icon { width: 40px; height: 40px; border-radius: 12px; box-shadow: 0 4px 14px rgba(255, 122, 26, 0.35); }
.brand-text { font-size: 20px; font-weight: 800; letter-spacing: 1px; }
.brand-text em { font-style: normal; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.nav-links { display: flex; gap: 28px; margin-left: auto; }
.nav-links a { font-size: 15px; color: #fff; transition: color 0.2s; position: relative; padding: 4px 0; }
.nav-links a:hover, .nav-links a.is-active { color: var(--yellow); }
.nav-links a::after {
  content: ""; position: absolute; left: 0; bottom: -2px; width: 0; height: 2px;
  background: var(--grad); border-radius: 2px; transition: width 0.25s;
}
.nav-links a:hover::after, .nav-links a.is-active::after { width: 100%; }
.nav-cta {
  flex-shrink: 0; padding: 9px 22px; border-radius: 999px;
  background: var(--grad); color: #2a1500; font-weight: 700; font-size: 14px;
  box-shadow: 0 6px 18px rgba(255, 122, 26, 0.4);
  transition: transform 0.2s, box-shadow 0.2s;
}
.nav-cta:hover { transform: translateY(-2px); box-shadow: 0 10px 26px rgba(255, 122, 26, 0.55); }
.nav-toggle {
  display: none; flex-direction: column; gap: 5px; background: none; border: 0;
  cursor: pointer; padding: 8px; margin-left: auto;
}
.nav-toggle span { width: 22px; height: 2px; background: var(--text); border-radius: 2px; transition: 0.3s; }
.nav-toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.is-open span:nth-child(2) { opacity: 0; }
.nav-toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ========== 主视觉 ========== */
.hero {
  position: relative; min-height: 100svh;
  display: flex; align-items: center;
  padding: 110px 0 90px;
  overflow: hidden;
}
.hero-slider { position: absolute; inset: 0; }
.hero-slide {
  position: absolute; inset: 0;
  background-size: cover; background-position: center 20%;
  opacity: 0; transform: scale(1.06);
  transition: opacity 1.1s ease, transform 1.4s ease;
}
.hero-slide.is-active { opacity: 1; transform: scale(1); }
.hero-mask {
  position: absolute; inset: 0;
  background:
    linear-gradient(90deg, rgba(10, 14, 38, 0.97) 0%, rgba(10, 14, 38, 0.82) 45%, rgba(10, 14, 38, 0.55) 100%),
    linear-gradient(0deg, var(--bg) 0%, transparent 35%);
}
.hero-inner { position: relative; z-index: 2; width: min(1200px, 92%); margin: 0 auto; }
.hero-tag {
  display: inline-block; padding: 7px 18px; border-radius: 999px;
  border: 1px solid rgba(255, 217, 74, 0.45);
  background: rgba(255, 217, 74, 0.1);
  color: var(--yellow); font-size: 14px; font-weight: 600; letter-spacing: 2px;
  margin-bottom: 22px;
  animation: fadeUp 0.8s ease both;
}
.hero-title {
  font-size: clamp(38px, 6.4vw, 74px); font-weight: 900; line-height: 1.15;
  letter-spacing: 2px; margin-bottom: 18px;
  text-shadow: 0 6px 30px rgba(0, 0, 0, 0.5);
  animation: fadeUp 0.8s 0.1s ease both;
}
.hero-title .dot { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; padding: 0 4px; }
.hero-sub {
  font-size: clamp(15px, 1.8vw, 19px); color: #cdd4f2; max-width: 560px;
  margin-bottom: 26px; animation: fadeUp 0.8s 0.2s ease both;
}
.hero-meta { display: flex; flex-wrap: wrap; gap: 14px 30px; margin-bottom: 34px; animation: fadeUp 0.8s 0.3s ease both; }
.hero-meta span { display: inline-flex; align-items: center; gap: 8px; font-size: 15px; font-weight: 600; }
.hero-meta i { width: 9px; height: 9px; border-radius: 50%; display: inline-block; }
.dot-red { background: var(--red); box-shadow: 0 0 10px var(--red); }
.dot-gold { background: var(--yellow); box-shadow: 0 0 10px var(--yellow); }

.hero-actions { display: flex; flex-wrap: wrap; gap: 18px; align-items: center; margin-bottom: 48px; animation: fadeUp 0.8s 0.4s ease both; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  padding: 14px 38px; border-radius: 999px; font-size: 17px; font-weight: 800;
  cursor: pointer; border: 0; transition: transform 0.2s, box-shadow 0.2s;
}
.btn-primary {
  background: var(--grad); color: #2a1500;
  box-shadow: 0 10px 30px rgba(255, 122, 26, 0.45), inset 0 1px 0 rgba(255, 255, 255, 0.4);
}
.btn-primary:hover { transform: translateY(-3px) scale(1.02); box-shadow: 0 16px 40px rgba(255, 122, 26, 0.6); }
.btn-ghost {
  border: 1px solid rgba(255, 255, 255, 0.35); color: var(--text);
  background: rgba(255, 255, 255, 0.06); backdrop-filter: blur(6px);
}
.btn-ghost:hover { background: rgba(255, 255, 255, 0.14); transform: translateY(-3px); }
.btn-lg { padding: 16px 44px; font-size: 18px; }
.btn-ios {
  background: linear-gradient(120deg, #4db2ff 0%, #2f6bff 100%); color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.25);
  box-shadow: 0 10px 30px rgba(47, 107, 255, 0.45), inset 0 1px 0 rgba(255, 255, 255, 0.35);
}
.btn-ios:hover { transform: translateY(-3px) scale(1.02); box-shadow: 0 16px 40px rgba(47, 107, 255, 0.6); }

.btn-download-wrap { position: relative; }
.btn-qr {
  position: absolute; bottom: calc(100% + 12px); left: 50%; transform: translateX(-50%) translateY(-6px);
  background: #fff; color: #333; border-radius: 12px; padding: 10px;
  display: flex; flex-direction: column; align-items: center; gap: 6px;
  opacity: 0; pointer-events: none; transition: 0.25s; z-index: 20;
  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.4);
}
.btn-qr em { font-size: 12px; font-style: normal; color: #666; white-space: nowrap; }
.btn-download-wrap:hover .btn-qr { opacity: 1; transform: translateX(-50%) translateY(0); pointer-events: auto; }
.btn-qr-box { width: 110px; height: 110px; display: block; }
.btn-qr-box img, .btn-qr-box canvas { width: 100% !important; height: 100% !important; }

.hero-stats {
  display: grid; grid-template-columns: repeat(4, minmax(120px, 1fr));
  gap: 14px; max-width: 640px; animation: fadeUp 0.8s 0.5s ease both;
}
.stat {
  background: rgba(255, 255, 255, 0.06); border: 1px solid var(--line);
  border-radius: 14px; padding: 16px 14px; backdrop-filter: blur(8px);
  transition: transform 0.25s, border-color 0.25s;
}
.stat:hover { transform: translateY(-4px); border-color: rgba(255, 217, 74, 0.5); }
.stat strong {
  display: block; font-size: clamp(22px, 2.6vw, 30px); font-weight: 900;
  background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.stat span { font-size: 13px; color: var(--muted); }

.hero-controls { position: absolute; z-index: 3; right: 5%; bottom: 46px; display: flex; align-items: center; gap: 16px; }
.hero-arrow {
  width: 44px; height: 44px; border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.3); background: rgba(255, 255, 255, 0.08);
  color: #fff; font-size: 22px; cursor: pointer; backdrop-filter: blur(6px);
  transition: background 0.2s, transform 0.2s;
}
.hero-arrow:hover { background: rgba(255, 217, 74, 0.25); transform: scale(1.08); }
.hero-dots { display: flex; gap: 8px; }
.hero-dots span {
  width: 8px; height: 8px; border-radius: 999px; background: rgba(255, 255, 255, 0.35);
  transition: 0.3s; cursor: pointer;
}
.hero-dots span.is-active { width: 26px; background: var(--yellow); }

/* ========== 数据亮点 ========== */
.highlight { margin-top: -58px; position: relative; z-index: 5; }
.highlight-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px;
  background: linear-gradient(160deg, var(--bg-3), var(--bg-2));
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px; box-shadow: var(--shadow);
}
.highlight-grid li { display: flex; align-items: center; gap: 14px; padding: 6px 10px; }
.highlight-grid strong { display: block; font-size: 17px; }
.highlight-grid span { font-size: 13px; color: var(--muted); }
.hl-icon {
  width: 46px; height: 46px; border-radius: 14px; flex-shrink: 0;
  background: var(--grad); position: relative;
  box-shadow: 0 8px 20px rgba(255, 122, 26, 0.35);
}
.hl-icon::after {
  content: ""; position: absolute; inset: 0; margin: auto; width: 22px; height: 22px;
  background-repeat: no-repeat; background-position: center; background-size: contain;
}
.hl-i1::after { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%232a1500' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M12 2v20M17 6H9.5a3.5 3.5 0 0 0 0 7h5a3.5 3.5 0 0 1 0 7H6'/%3E%3C/svg%3E"); }
.hl-i2::after { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%232a1500' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 12v10H4V12M2 7h20v5H2zM12 22V7M12 7c-1.5-2.5-4-4-5.5-3S5 7 7 7h5zM12 7c1.5-2.5 4-4 5.5-3S19 7 17 7h-5z'/%3E%3C/svg%3E"); }
.hl-i3::after { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%232a1500' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='12' cy='12' r='10'/%3E%3Cpath d='M12 6v6l4 2'/%3E%3C/svg%3E"); }
.hl-i4::after { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%232a1500' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M8 3v4a4 4 0 0 0 8 0V3M7 21h10M12 11v10M4 7h3M17 7h3'/%3E%3C/svg%3E"); }

/* ========== 通用区块 ========== */
section { padding: 96px 0; }
.section-head { text-align: center; margin-bottom: 54px; }
.section-eyebrow { font-size: 13px; letter-spacing: 4px; color: var(--orange); font-weight: 700; margin-bottom: 12px; }
.section-title { font-size: clamp(28px, 4vw, 44px); font-weight: 900; letter-spacing: 2px; }
.section-title .accent {
  background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent;
  padding-left: 8px;
}
.section-sub { color: var(--muted); margin-top: 12px; font-size: 15px; }

/* ========== 福利 ========== */
.welfare { background: linear-gradient(180deg, transparent, rgba(26, 36, 84, 0.35), transparent); }
.welfare-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.welfare-card {
  position: relative; overflow: hidden;
  background: linear-gradient(160deg, var(--bg-3), var(--card));
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px 24px 26px;
  transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
}
.welfare-card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--grad); opacity: 0; transition: opacity 0.3s;
}
.welfare-card:hover { transform: translateY(-8px); border-color: rgba(255, 217, 74, 0.45); box-shadow: var(--shadow); }
.welfare-card:hover::before { opacity: 1; }
.welfare-num {
  font-size: 40px; font-weight: 900; line-height: 1;
  background: linear-gradient(180deg, rgba(255, 217, 74, 0.5), rgba(255, 122, 26, 0.15));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.welfare-card h3 { font-size: 19px; margin: 12px 0 8px; }
.welfare-card p { font-size: 14px; color: var(--muted); }
.highlight-card { border-color: rgba(255, 122, 26, 0.6); background: linear-gradient(160deg, #3a2a10, #241a3f); }
.highlight-card h3 { color: var(--yellow); }

/* ========== 简介 ========== */
.story-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 60px; align-items: center; }
.story-lead { color: #c6cde9; margin-bottom: 16px; font-size: 16px; }
.story-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
.story-tags span {
  padding: 7px 18px; border-radius: 999px; font-size: 13px; font-weight: 600;
  border: 1px solid rgba(255, 217, 74, 0.4); color: var(--yellow);
  background: rgba(255, 217, 74, 0.08);
}
.story-poster {
  position: relative; border-radius: var(--radius); overflow: hidden;
  box-shadow: var(--shadow); transform: rotate(1.5deg);
  transition: transform 0.4s;
}
.story-poster:hover { transform: rotate(0deg) scale(1.02); }
.story-badge {
  position: absolute; left: 18px; bottom: 18px;
  padding: 8px 20px; border-radius: 999px;
  background: var(--grad); color: #2a1500; font-weight: 800; font-size: 14px;
  box-shadow: 0 8px 24px rgba(255, 122, 26, 0.5);
}

/* ========== 特色 ========== */
.features-grid {
  display: grid; grid-template-columns: repeat(6, 1fr); gap: 18px;
}
.feature-card {
  grid-column: span 2;
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
}
.feature-card:nth-child(4), .feature-card:nth-child(5) { grid-column: span 3; }
.feature-card:hover { transform: translateY(-8px); box-shadow: var(--shadow); border-color: rgba(255, 217, 74, 0.45); }
.feature-img { aspect-ratio: 16 / 9; overflow: hidden; }
.feature-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }
.feature-card:hover .feature-img img { transform: scale(1.08); }
.feature-card figcaption { padding: 20px 22px 24px; }
.feature-card h3 { font-size: 18px; margin-bottom: 6px; }
.feature-card p { font-size: 14px; color: var(--muted); }

/* ========== 截图 ========== */
.gallery { background: linear-gradient(180deg, transparent, rgba(26, 36, 84, 0.35), transparent); }
.gallery-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.gallery-item {
  border-radius: 14px; overflow: hidden; border: 1px solid var(--line);
  position: relative; cursor: zoom-in;
}
.gallery-item img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 16 / 9; transition: transform 0.5s; }
.gallery-item::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(0deg, rgba(255, 122, 26, 0.18), transparent 55%);
  opacity: 0; transition: opacity 0.3s;
}
.gallery-item:hover img { transform: scale(1.07); }
.gallery-item:hover::after { opacity: 1; }

/* ========== 视频 ========== */
.video-box {
  position: relative; max-width: 920px; margin: 0 auto 28px;
  border-radius: var(--radius); overflow: hidden;
  border: 1px solid var(--line); box-shadow: var(--shadow);
}
.video-box:last-child { margin-bottom: 0; }
.video-box video { width: 100%; display: block; aspect-ratio: 16 / 9; background: #000; }
.video-cover {
  position: absolute; inset: 0; z-index: 2;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 14px;
  background: linear-gradient(0deg, rgba(13, 19, 48, 0.72), rgba(13, 19, 48, 0.35));
  cursor: pointer; transition: opacity 0.35s;
}
.video-cover.is-hidden { opacity: 0; pointer-events: none; }
.video-play {
  width: 82px; height: 82px; border-radius: 50%; border: 0; cursor: pointer;
  background: var(--grad); color: #2a1500;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 0 0 10px rgba(255, 217, 74, 0.18), 0 14px 40px rgba(255, 122, 26, 0.5);
  transition: transform 0.25s;
  animation: pulse 2.2s infinite;
}
.video-play:hover { transform: scale(1.1); }
.video-cover span { font-size: 15px; font-weight: 600; letter-spacing: 1px; }

/* ========== 下载 ========== */
.download { padding-bottom: 110px; }
.download-box {
  display: flex; align-items: center; justify-content: space-between; gap: 40px; flex-wrap: wrap;
  background: linear-gradient(150deg, #2b3a86, #1a2454 55%, #231a4f);
  border: 1px solid rgba(255, 217, 74, 0.25);
  border-radius: 26px; padding: 46px 50px;
  box-shadow: var(--shadow);
  position: relative; overflow: hidden;
}
.download-box::before {
  content: ""; position: absolute; top: -120px; right: -80px; width: 320px; height: 320px;
  border-radius: 50%; background: radial-gradient(circle, rgba(255, 217, 74, 0.25), transparent 70%);
}
.download-info { display: flex; align-items: center; gap: 22px; }
.download-icon {
  width: 92px; height: 92px; border-radius: 24px;
  box-shadow: 0 12px 32px rgba(255, 122, 26, 0.4);
}
.download-info h2 { font-size: 30px; font-weight: 900; letter-spacing: 1px; }
.download-info > div > p { color: #c6cde9; font-size: 14px; margin-top: 4px; }
.download-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px !important; }
.download-tags span {
  font-size: 12px; padding: 4px 12px; border-radius: 999px;
  background: rgba(255, 255, 255, 0.1); border: 1px solid rgba(255, 255, 255, 0.18);
}
.download-actions { display: flex; align-items: center; gap: 30px; flex-wrap: wrap; }
.download-btns { display: flex; flex-direction: column; gap: 14px; }
.download-qr {
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  background: #fff; border-radius: 16px; padding: 14px;
}
.download-qr em { font-size: 12px; font-style: normal; color: #666; white-space: nowrap; }
.download-qr-box { width: 108px; height: 108px; display: block; }
.download-qr-box img, .download-qr-box canvas { width: 100% !important; height: 100% !important; }
.download-note { width: 100%; text-align: center; font-size: 13px; color: rgba(255, 255, 255, 0.75); }

/* ========== 页脚 ========== */
.footer { border-top: 1px solid var(--line); padding: 56px 0 40px; background: rgba(9, 13, 34, 0.7); }
.footer-inner { text-align: center; }
.footer-brand { display: inline-flex; align-items: center; gap: 10px; font-size: 20px; font-weight: 800; }
.footer-icon { width: 34px; height: 34px; border-radius: 10px; }
.footer-desc { color: var(--muted); font-size: 14px; margin: 14px 0 26px; }
.footer-links { margin-bottom: 26px; }
.footer-links-title { display: block; font-size: 13px; color: #7d86b3; letter-spacing: 2px; margin-bottom: 10px; }
.footer-links-list { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px 22px; }
.footer-links-list a { font-size: 13px; color: var(--muted); transition: color 0.2s; }
.footer-links-list a:hover { color: var(--yellow); }
.footer-copy { font-size: 12px; color: #6c74a0; margin-top: 10px; }

/* ========== 返回顶部 ========== */
.back-top {
  position: fixed; right: 22px; bottom: 26px; z-index: 90;
  width: 46px; height: 46px; border-radius: 50%; border: 0; cursor: pointer;
  background: var(--grad); color: #2a1500;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 10px 26px rgba(255, 122, 26, 0.45);
  opacity: 0; transform: translateY(16px); pointer-events: none;
  transition: opacity 0.3s, transform 0.3s;
}
.back-top.is-show { opacity: 1; transform: translateY(0); pointer-events: auto; }
.back-top:hover { transform: translateY(-3px); }

/* ========== 灯箱 ========== */
.lightbox {
  position: fixed; inset: 0; z-index: 200; display: flex; align-items: center; justify-content: center;
  background: rgba(6, 9, 24, 0.92); backdrop-filter: blur(8px);
  opacity: 0; pointer-events: none; transition: opacity 0.3s; cursor: zoom-out;
}
.lightbox.is-open { opacity: 1; pointer-events: auto; }
.lightbox img { max-width: 92%; max-height: 88vh; border-radius: 12px; box-shadow: 0 30px 80px rgba(0, 0, 0, 0.6); }

/* ========== 动画 ========== */
@keyframes fadeUp { from { opacity: 0; transform: translateY(26px); } to { opacity: 1; transform: translateY(0); } }
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 8px rgba(255, 217, 74, 0.2), 0 14px 40px rgba(255, 122, 26, 0.5); }
  50% { box-shadow: 0 0 0 18px rgba(255, 217, 74, 0.05), 0 14px 40px rgba(255, 122, 26, 0.5); }
}
.reveal { opacity: 0; transform: translateY(34px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.is-in { opacity: 1; transform: translateY(0); }

/* ========== 响应式 ========== */
@media (max-width: 1024px) {
  .welfare-grid { grid-template-columns: repeat(2, 1fr); }
  .highlight-grid { grid-template-columns: repeat(2, 1fr); }
  .story-grid { gap: 40px; }
  .feature-card, .feature-card:nth-child(4), .feature-card:nth-child(5) { grid-column: span 3; }
}

@media (max-width: 768px) {
  section { padding: 68px 0; }
  .nav-links {
    position: fixed; top: 68px; left: 0; right: 0;
    flex-direction: column; gap: 0; padding: 10px 0;
    background: rgba(13, 19, 48, 0.97); backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--line);
    transform: translateY(-130%); transition: transform 0.35s ease;
  }
  .nav-links.is-open { transform: translateY(0); }
  .nav-links a { padding: 14px 6%; font-size: 16px; }
  .nav-links a::after { display: none; }
  .nav-toggle { display: flex; }
  .nav-cta { margin-left: 0; padding: 8px 16px; font-size: 13px; }
  .brand-text { font-size: 17px; }

  .hero { min-height: auto; padding: 120px 0 70px; }
  .hero-mask {
    background:
      linear-gradient(180deg, rgba(10, 14, 38, 0.72) 0%, rgba(10, 14, 38, 0.94) 70%, var(--bg) 100%);
  }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .hero-controls { right: 50%; transform: translateX(50%); bottom: 20px; }
  .btn-qr { display: none; }

  .story-grid { grid-template-columns: 1fr; }
  .story-visual { order: -1; }
  .features-grid { grid-template-columns: 1fr; }
  .feature-card, .feature-card:nth-child(4), .feature-card:nth-child(5) { grid-column: span 1; }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }

  .download-box { flex-direction: column; text-align: center; padding: 36px 24px; gap: 28px; }
  .download-info { flex-direction: column; text-align: center; }
  .download-tags { justify-content: center; }
  .download-actions { justify-content: center; }
}

@media (max-width: 480px) {
  .welfare-grid { grid-template-columns: 1fr; }
  .highlight-grid { grid-template-columns: 1fr; gap: 8px; padding: 18px; }
  .gallery-grid { grid-template-columns: 1fr; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .download-btns { width: 100%; }
  .download-btns .btn { width: 100%; }
  .back-top { right: 14px; bottom: 18px; width: 42px; height: 42px; }
}