/* ═══ 腾官国际官网 —— 分销代理多端触达系统 ═══ */
:root {
  --ink: #0f172a;        /* 深蓝黑（主文字） */
  --ink-2: #334155;      /* 次级文字 */
  --muted: #64748b;      /* 弱化文字 */
  --line: #e2e8f0;       /* 分割线 */
  --bg: #ffffff;
  --bg-soft: #f8fafc;
  --gold: #c8a24a;       /* 品牌金 */
  --gold-deep: #a8863a;
  --dark: #0b1220;       /* 深色块 */
  --radius: 14px;
  --shadow: 0 10px 40px rgba(15, 23, 42, .08);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: var(--font); color: var(--ink); background: var(--bg); line-height: 1.7; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
h1, h2, h3 { line-height: 1.25; }

/* ─── 顶部导航 ─── */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(11, 18, 32, .88); backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, .08);
}
.nav-inner { max-width: 1180px; margin: 0 auto; padding: 0 24px; height: 64px; display: flex; align-items: center; gap: 32px; }
.brand { display: flex; align-items: center; gap: 10px; }
.brand-mark {
  width: 34px; height: 34px; border-radius: 9px; background: linear-gradient(135deg, var(--gold), var(--gold-deep));
  color: #fff; font-weight: 800; font-size: 18px; display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 14px rgba(200, 162, 74, .4);
}
.brand-name { color: #fff; font-weight: 700; font-size: 17px; letter-spacing: 1px; }
.brand-sub { color: rgba(255, 255, 255, .45); font-size: 11px; letter-spacing: 1.5px; margin-top: 2px; }
.nav-links { display: flex; gap: 26px; margin-left: auto; }
.nav-links a { color: rgba(255, 255, 255, .78); font-size: 14px; transition: color .2s; }
.nav-links a:hover { color: var(--gold); }
.nav-cta { display: flex; gap: 12px; }
.nav-burger { display: none; background: none; border: 0; cursor: pointer; padding: 6px; }
.nav-burger span { display: block; width: 22px; height: 2px; background: #fff; margin: 5px 0; border-radius: 2px; }

/* ─── 按钮 ─── */
.btn {
  display: inline-block; padding: 10px 22px; border-radius: 999px; font-size: 14px; font-weight: 600;
  border: 1px solid transparent; cursor: pointer; transition: all .2s; text-align: center; white-space: nowrap;
}
.btn-lg { padding: 13px 30px; font-size: 15px; }
.btn-gold { background: linear-gradient(135deg, var(--gold), var(--gold-deep)); color: #fff; box-shadow: 0 6px 20px rgba(200, 162, 74, .35); }
.btn-gold:hover { transform: translateY(-2px); box-shadow: 0 10px 26px rgba(200, 162, 74, .45); }
.btn-ghost { background: rgba(255, 255, 255, .08); color: #fff; border-color: rgba(255, 255, 255, .22); }
.btn-ghost:hover { background: rgba(255, 255, 255, .16); }
.btn-outline { background: transparent; color: #fff; border-color: rgba(255, 255, 255, .5); }
.btn-outline:hover { background: rgba(255, 255, 255, .1); }
.btn-dark { background: var(--ink); color: #fff; }
.btn-dark:hover { background: #1e293b; transform: translateY(-2px); }

/* ─── Hero ─── */
.hero { position: relative; background: radial-gradient(1200px 500px at 70% -10%, rgba(200, 162, 74, .18), transparent 60%), linear-gradient(180deg, #0b1220 0%, #0f172a 100%); color: #fff; padding: 160px 24px 90px; overflow: hidden; }
.hero-grid { position: absolute; inset: 0; background-image: linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px); background-size: 44px 44px; mask-image: radial-gradient(700px 400px at 60% 20%, #000 30%, transparent 75%); }
.hero-inner { position: relative; max-width: 1180px; margin: 0 auto; text-align: center; }
.hero-badge { display: inline-block; padding: 6px 16px; border-radius: 999px; border: 1px solid rgba(200, 162, 74, .45); color: var(--gold); font-size: 13px; letter-spacing: 1px; margin-bottom: 24px; background: rgba(200, 162, 74, .08); }
.hero h1 { font-size: 54px; font-weight: 800; letter-spacing: 1px; }
.hero h1 .gold { color: var(--gold); }
.hero-lead { margin: 22px auto 0; font-size: 18px; color: rgba(255, 255, 255, .75); max-width: 620px; }
.hero-actions { margin-top: 36px; display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.hero-stats { margin-top: 64px; display: flex; justify-content: center; gap: 48px; flex-wrap: wrap; }
.hero-stats div { text-align: center; }
.hero-stats b { display: block; font-size: 34px; font-weight: 800; color: var(--gold); }
.hero-stats span { font-size: 13px; color: rgba(255, 255, 255, .6); }

/* ─── 通用 section ─── */
.section { padding: 96px 24px; }
.section-dark { background: var(--dark); color: #fff; }
.section-gold { background: linear-gradient(160deg, #0b1220, #1a2233); color: #fff; }
.section-head { max-width: 680px; margin: 0 auto 56px; text-align: center; }
.section-tag { display: inline-block; font-size: 12px; letter-spacing: 3px; color: var(--gold); font-weight: 700; margin-bottom: 12px; }
.section-head h2 { font-size: 36px; font-weight: 800; }
.section-head p { margin-top: 14px; color: var(--muted); font-size: 15px; }
.section-dark .section-head p, .section-gold .section-head p { color: rgba(255, 255, 255, .55); }

/* ─── 产品能力卡片 ─── */
.cards { max-width: 1180px; margin: 0 auto; display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.card { background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; transition: all .25s; }
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: rgba(200, 162, 74, .4); }
.card-icon { font-size: 30px; margin-bottom: 14px; }
.card h3 { font-size: 18px; margin-bottom: 10px; }
.card p { font-size: 14px; color: var(--muted); }

/* ─── 定价 ─── */
.plans { max-width: 1060px; margin: 0 auto; display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; align-items: stretch; }
.plan { background: #141c2e; border: 1px solid rgba(255, 255, 255, .08); border-radius: 18px; padding: 36px 30px; display: flex; flex-direction: column; position: relative; transition: transform .25s; }
.plan:hover { transform: translateY(-4px); }
.plan-featured { border-color: var(--gold); box-shadow: 0 0 0 1px var(--gold), 0 20px 60px rgba(200, 162, 74, .18); }
.plan-tag { position: absolute; top: -14px; left: 50%; transform: translateX(-50%); background: linear-gradient(135deg, var(--gold), var(--gold-deep)); color: #fff; font-size: 12px; font-weight: 700; padding: 5px 18px; border-radius: 999px; letter-spacing: 1px; }
.plan-name { font-size: 20px; font-weight: 700; color: #fff; }
.plan-price { font-size: 40px; font-weight: 800; color: var(--gold); margin: 18px 0 4px; }
.plan-price span { display: block; font-size: 13px; font-weight: 500; color: rgba(255, 255, 255, .5); margin-top: 4px; }
.plan-desc { font-size: 13px; color: rgba(255, 255, 255, .6); margin-bottom: 22px; min-height: 20px; }
.plan-feats { list-style: none; flex: 1; margin-bottom: 26px; }
.plan-feats li { position: relative; padding: 8px 0 8px 26px; font-size: 14px; color: rgba(255, 255, 255, .85); border-bottom: 1px solid rgba(255, 255, 255, .06); }
.plan-feats li::before { content: "✔"; position: absolute; left: 0; color: var(--gold); font-size: 13px; }
.plan-feats li.muted { color: rgba(255, 255, 255, .4); }
.plan-feats li.muted::before { content: "🔒"; font-size: 12px; }
.plan .btn { width: 100%; }

/* ─── 对比表 ─── */
.table-wrap { max-width: 900px; margin: 0 auto; overflow-x: auto; border-radius: var(--radius); border: 1px solid var(--line); }
.compare { width: 100%; border-collapse: collapse; font-size: 14px; background: var(--bg); }
.compare th { background: var(--bg-soft); padding: 16px 20px; text-align: left; font-weight: 700; border-bottom: 2px solid var(--line); white-space: nowrap; }
.compare td { padding: 14px 20px; border-bottom: 1px solid var(--line); color: var(--ink-2); }
.compare tr:last-child td { border-bottom: 0; }
.compare tr:hover td { background: #fbfaf6; }
.compare-note { max-width: 900px; margin: 18px auto 0; font-size: 12px; color: var(--muted); text-align: center; }

/* ─── 下载区 ─── */
.download-box { max-width: 900px; margin: 0 auto; background: rgba(255, 255, 255, .05); border: 1px solid rgba(255, 255, 255, .1); border-radius: 18px; padding: 36px; }
.dl-item { display: flex; align-items: center; gap: 28px; flex-wrap: wrap; }
.dl-info { flex: 1; min-width: 280px; }
.dl-info h3 { font-size: 19px; margin-bottom: 8px; }
.dl-info p { font-size: 14px; color: rgba(255, 255, 255, .65); margin-bottom: 8px; }
.dl-meta { display: inline-block; font-size: 12px; color: var(--gold); background: rgba(200, 162, 74, .12); border: 1px solid rgba(200, 162, 74, .3); padding: 4px 12px; border-radius: 999px; }
.dl-divider { height: 1px; background: rgba(255, 255, 255, .1); margin: 30px 0; }

/* ─── 关于 / 联系 ─── */
.about-grid { max-width: 1060px; margin: 0 auto; display: grid; grid-template-columns: 1.3fr 1fr; gap: 56px; align-items: start; }
.about-text h2 { font-size: 32px; margin-bottom: 18px; }
.about-text p { color: var(--muted); font-size: 15px; margin-bottom: 14px; }
.about-text b { color: var(--ink); }
.about-contact { background: var(--bg-soft); border: 1px solid var(--line); border-radius: var(--radius); padding: 30px; }
.about-contact h3 { font-size: 18px; margin-bottom: 20px; }
.about-contact ul { list-style: none; }
.about-contact li { display: flex; justify-content: space-between; align-items: center; padding: 12px 0; border-bottom: 1px solid var(--line); font-size: 14px; }
.about-contact li span { color: var(--muted); }
.about-contact li a { color: var(--gold-deep); font-weight: 600; }
.about-contact li a:hover { text-decoration: underline; }
.about-contact li .wechat-id { color: var(--gold-deep); font-weight: 600; cursor: pointer; }
.about-contact li .wechat-id:hover { text-decoration: underline; }
.about-contact li .wechat-id small { font-weight: 400; color: var(--muted); font-size: 12px; }
.contact-tip { margin-top: 20px; font-size: 12px; color: var(--muted); background: #fffbeb; border: 1px solid #fde68a; border-radius: 8px; padding: 10px 14px; }

/* ─── 页脚 ─── */
.footer { background: #070b14; color: rgba(255, 255, 255, .5); padding: 36px 24px; }
.footer-inner { max-width: 1180px; margin: 0 auto; display: flex; justify-content: space-between; align-items: center; gap: 20px; flex-wrap: wrap; }
.footer .brand-name { font-size: 15px; }
.footer p { font-size: 13px; }

/* ─── Toast ─── */
.toast { position: fixed; left: 50%; bottom: 40px; transform: translateX(-50%) translateY(80px); background: var(--ink); color: #fff; padding: 12px 26px; border-radius: 999px; font-size: 14px; opacity: 0; transition: all .3s; z-index: 200; box-shadow: 0 10px 30px rgba(0,0,0,.25); }
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ─── 响应式 ─── */
@media (max-width: 960px) {
  .cards { grid-template-columns: 1fr 1fr; }
  .plans { grid-template-columns: 1fr; max-width: 480px; }
  .about-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 38px; }
}
@media (max-width: 720px) {
  .cards { grid-template-columns: 1fr; }
  .nav-links, .nav-cta { display: none; }
  .nav-links.open { display: flex; position: absolute; top: 64px; left: 0; right: 0; flex-direction: column; background: var(--dark); padding: 16px 24px; gap: 14px; }
  .nav-burger { display: block; margin-left: auto; }
  .hero { padding: 130px 20px 70px; }
  .hero-stats { gap: 24px; }
  .hero-stats b { font-size: 26px; }
  .section { padding: 72px 20px; }
  .section-head h2 { font-size: 28px; }
  .dl-item { flex-direction: column; align-items: flex-start; }
}