/* ===== 星途伴行官网 · 深海蓝主题 ===== */
:root {
  --bg: #0E141A;
  --bg2: #0C1118;
  --card: #131C26;
  --card2: #18232F;
  --line: #22303F;
  --primary: #1565C0;
  --primary2: #2E8BFF;
  --accent: #A9C9FF;
  --coral: #C2185B;
  --text: #EAF2FA;
  --text-dim: #93A8BC;
  --radius: 18px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  overflow-x: hidden;
}
a { color: var(--accent); text-decoration: none; }
img { display: block; max-width: 100%; }
b { color: var(--text); }

/* ===== 导航 ===== */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(14, 20, 26, 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(34, 48, 63, 0.6);
}
.nav-inner {
  max-width: 1180px; margin: 0 auto; padding: 12px 20px;
  display: flex; align-items: center; gap: 20px;
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand-icon { width: 38px; height: 38px; border-radius: 12px; box-shadow: 0 0 14px rgba(46,139,255,0.35); }
.brand-name { font-size: 19px; font-weight: 800; letter-spacing: 1px; }
.brand-sub { font-size: 11px; color: var(--text-dim); margin-left: 6px; }
.nav-links { display: flex; gap: 18px; margin-left: auto; }
.nav-links a { color: var(--text-dim); font-size: 14.5px; transition: color .2s; }
.nav-links a:hover { color: var(--text); }
.btn-download {
  background: linear-gradient(135deg, var(--primary), var(--primary2));
  color: #fff; padding: 8px 18px; border-radius: 999px;
  font-size: 14px; font-weight: 600; transition: transform .2s, box-shadow .2s;
}
.btn-download:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(46,139,255,0.45); }
.nav-toggle { display: none; background: none; border: 1px solid var(--line); color: var(--text); border-radius: 10px; padding: 6px 12px; font-size: 16px; }

/* ===== Hero ===== */
.hero { position: relative; padding: 150px 20px 90px; overflow: hidden; }
.hero-bg {
  position: absolute; inset: 0; z-index: 0;
  background:
    radial-gradient(ellipse 60% 50% at 70% 20%, rgba(21,101,192,0.35), transparent 65%),
    radial-gradient(ellipse 50% 40% at 20% 80%, rgba(194,24,91,0.18), transparent 60%),
    linear-gradient(180deg, #0E141A 0%, #0A0F16 55%, #0E141A 100%);
}
.hero-grid {
  position: relative; z-index: 1;
  max-width: 1180px; margin: 0 auto;
  display: grid; grid-template-columns: 1.15fr 1fr; gap: 50px; align-items: center;
}
.hero-title { font-size: clamp(34px, 5vw, 54px); font-weight: 900; letter-spacing: 2px; line-height: 1.2; }
.hero-title .accent { color: var(--primary2); }
.hero-slogan { margin-top: 14px; font-size: 17px; color: var(--accent); font-weight: 600; }
.hero-desc { margin-top: 16px; color: var(--text-dim); font-size: 15.5px; max-width: 540px; }
.hero-desc strong { color: var(--text); }
.hero-cta { margin-top: 26px; display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.btn-primary {
  display: inline-flex; flex-direction: column; align-items: center; gap: 2px;
  background: linear-gradient(135deg, var(--primary), var(--primary2));
  color: #fff; padding: 13px 30px; border-radius: 16px;
  box-shadow: 0 10px 30px rgba(46,139,255,0.35);
  transition: transform .2s, box-shadow .2s;
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 14px 36px rgba(46,139,255,0.5); }
.btn-primary-text { font-size: 17px; font-weight: 800; letter-spacing: 2px; }
.btn-primary-sub { font-size: 12px; opacity: .85; }
.btn-ghost {
  border: 1px solid var(--line); color: var(--text-dim);
  padding: 12px 22px; border-radius: 999px; font-size: 14.5px; transition: all .2s;
}
.btn-ghost:hover { color: var(--text); border-color: var(--accent); }
.hero-stats { margin-top: 30px; display: flex; gap: 30px; flex-wrap: wrap; }
.stat { display: flex; flex-direction: column; }
.stat b { font-size: 24px; color: var(--accent); }
.stat span { font-size: 12.5px; color: var(--text-dim); }
.hero-visual { display: flex; flex-direction: column; align-items: center; gap: 18px; }
.hero-pet { position: relative; width: 220px; height: 220px; }
.pet-frame { width: 200px; height: 200px; animation: bob 3s ease-in-out infinite; filter: drop-shadow(0 8px 24px rgba(46,139,255,0.35)); }
@keyframes bob { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-12px); } }
.pet-bubble {
  position: absolute; top: -6px; left: 50%; transform: translateX(-50%);
  background: #fff; color: #0E141A; font-size: 13px; font-weight: 600;
  padding: 8px 14px; border-radius: 14px; white-space: nowrap;
  box-shadow: 0 4px 16px rgba(0,0,0,0.3);
}
.pet-bubble::after {
  content: ""; position: absolute; bottom: -6px; left: 50%; transform: translateX(-50%);
  border: 6px solid transparent; border-top-color: #fff; border-bottom: none;
}
.hero-img {
  width: 100%; max-width: 480px; border-radius: 20px;
  box-shadow: 0 16px 48px rgba(0,0,0,0.5); border: 1px solid var(--line);
}

/* ===== 通用 section ===== */
.section { padding: 88px 20px; }
.section-alt { background: var(--bg2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section-head { max-width: 1180px; margin: 0 auto 44px; text-align: center; }
.section-head h2 { font-size: clamp(26px, 3.5vw, 36px); font-weight: 800; letter-spacing: 1px; }
.section-head p { margin-top: 10px; color: var(--text-dim); font-size: 15px; }

/* ===== 功能卡片 ===== */
.cards { max-width: 1180px; margin: 0 auto; display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px 24px; transition: transform .25s, border-color .25s;
}
.card:hover { transform: translateY(-6px); border-color: rgba(46,139,255,0.5); }
.card-emoji { font-size: 32px; }
.card h3 { margin-top: 12px; font-size: 18px; }
.card p { margin-top: 10px; color: var(--text-dim); font-size: 14px; }

/* ===== 画廊 ===== */
.gallery { max-width: 1180px; margin: 0 auto; display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.g-item { position: relative; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); aspect-ratio: 4/5; }
.g-wide { grid-column: span 2; aspect-ratio: 16/9; }
.g-item img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.g-item:hover img { transform: scale(1.04); }
.g-item figcaption {
  position: absolute; left: 0; right: 0; bottom: 0;
  padding: 26px 16px 12px; font-size: 14px; color: #fff; font-weight: 600;
  background: linear-gradient(transparent, rgba(14,20,26,0.85));
}

/* ===== 桌宠 ===== */
.pet-show { max-width: 1180px; margin: 0 auto; display: grid; grid-template-columns: 1fr 1.2fr; gap: 44px; align-items: center; }
.pet-stage { text-align: center; }
.pet-anim { width: 300px; height: 300px; margin: 0 auto; animation: bob 2.6s ease-in-out infinite; filter: drop-shadow(0 10px 28px rgba(46,139,255,0.4)); }
.pet-shadow { width: 180px; height: 14px; margin: 4px auto 0; border-radius: 50%; background: rgba(0,0,0,0.35); filter: blur(4px); }
.pet-caption { margin-top: 16px; color: var(--accent); font-size: 15px; font-weight: 600; min-height: 24px; }
.pet-features { display: flex; flex-direction: column; gap: 16px; }
.pf { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 14px 18px; }
.pf b { display: block; font-size: 15.5px; }
.pf span { color: var(--text-dim); font-size: 13.5px; }

/* ===== 下载 ===== */
.download-box {
  max-width: 860px; margin: 0 auto; background: var(--card);
  border: 1px solid var(--line); border-radius: 24px; padding: 34px;
  display: flex; gap: 30px; align-items: flex-start;
}
.dl-icon { width: 110px; height: 110px; border-radius: 24px; box-shadow: 0 8px 28px rgba(46,139,255,0.3); flex-shrink: 0; }
.dl-version { font-size: 26px; font-weight: 800; display: flex; align-items: center; gap: 12px; }
.badge { background: rgba(46,139,255,0.2); color: var(--primary2); font-size: 12px; font-weight: 700; padding: 3px 10px; border-radius: 999px; }
.badge.warn { background: rgba(194,24,91,0.2); color: #FF6FA8; }
.dl-meta { margin-top: 8px; color: var(--text-dim); font-size: 13.5px; }
.dl-changelog { margin: 16px 0 20px; padding-left: 20px; color: var(--text-dim); font-size: 14.5px; }
.dl-changelog li { margin-bottom: 6px; }
.btn-primary.big { padding: 15px 40px; font-size: 17px; }
.dl-tip { margin-top: 12px; color: var(--text-dim); font-size: 12.5px; }

/* ===== 更新日志 ===== */
.log-list { max-width: 860px; margin: 0 auto; display: flex; flex-direction: column; gap: 18px; }
.log-item { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px 26px; }
.log-ver { display: flex; align-items: center; gap: 14px; }
.log-ver b { font-size: 18px; }
.log-ver span { color: var(--text-dim); font-size: 13px; }
.log-lines { margin-top: 12px; padding-left: 20px; color: var(--text-dim); font-size: 14.5px; }
.log-lines li { margin-bottom: 5px; }
.empty { color: var(--text-dim); text-align: center; }

/* ===== 统计 ===== */
.stats-grid { max-width: 1180px; margin: 0 auto; display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.s-card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 24px; text-align: center;
}
.s-card b { display: block; font-size: 34px; color: var(--accent); }
.s-card span { color: var(--text-dim); font-size: 13.5px; }
.week-chart { max-width: 680px; margin: 44px auto 0; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px 28px; }
.week-chart h3 { font-size: 16px; margin-bottom: 18px; }
.bars { display: flex; align-items: flex-end; gap: 14px; height: 150px; }
.bar { flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: flex-end; gap: 6px; }
.bar i { display: block; width: 100%; max-width: 40px; border-radius: 8px 8px 0 0; background: linear-gradient(180deg, var(--primary2), var(--primary)); min-height: 4px; transition: height .6s; }
.bar span { font-size: 12px; color: var(--text-dim); }

/* ===== 关于 ===== */
.about-grid { max-width: 1180px; margin: 0 auto; display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.about-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; }
.about-card h3 { font-size: 17px; }
.about-card p { margin-top: 10px; color: var(--text-dim); font-size: 14px; }
.donate { max-width: 680px; margin: 48px auto 0; text-align: center; }
.donate h3 { font-size: 20px; margin-bottom: 20px; }
.paycodes { display: flex; justify-content: center; gap: 30px; flex-wrap: wrap; }
.paycodes figure {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 14px 14px 10px;
}
.paycodes img { width: 220px; height: 220px; object-fit: contain; border-radius: 12px; }
.paycodes figcaption { margin-top: 8px; color: var(--text-dim); font-size: 13px; }

/* ===== 页脚 ===== */
.footer { border-top: 1px solid var(--line); padding: 40px 20px; background: var(--bg2); }
.footer-inner { max-width: 1180px; margin: 0 auto; text-align: center; }
.footer-brand { display: flex; align-items: center; justify-content: center; gap: 10px; }
.footer-brand img { width: 34px; height: 34px; border-radius: 10px; }
.footer-brand b { font-size: 17px; }
.footer-brand span { color: var(--text-dim); font-size: 12px; margin-left: 4px; }
.footer-copy { margin-top: 12px; color: var(--text-dim); font-size: 13px; }
.footer-links { margin-top: 8px; font-size: 13px; color: var(--text-dim); }
.footer-links a { color: var(--text-dim); margin: 0 6px; }
.footer-links a:hover { color: var(--text); }

/* ===== 滚动显现 ===== */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ===== 响应式 ===== */
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; gap: 34px; }
  .cards { grid-template-columns: 1fr; }
  .gallery { grid-template-columns: 1fr 1fr; }
  .g-wide { grid-column: span 2; }
  .pet-show { grid-template-columns: 1fr; }
  .download-box { flex-direction: column; align-items: center; text-align: center; }
  .dl-changelog { text-align: left; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .about-grid { grid-template-columns: 1fr; }
  .nav-links { display: none; }
  .nav-links.open { display: flex; flex-direction: column; position: absolute; top: 60px; left: 0; right: 0; background: rgba(14,20,26,0.96); padding: 16px 20px; gap: 14px; border-bottom: 1px solid var(--line); }
  .nav-toggle { display: block; }
}