/* 站群公共样式 - 开云app SEO站群 */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --primary: #1a6fd4;
  --primary-dark: #0e4fa0;
  --accent: #f5a623;
  --bg: #f4f7fb;
  --white: #fff;
  --text: #222;
  --text-light: #555;
  --border: #dde3ef;
  --radius: 10px;
  --shadow: 0 4px 24px rgba(26,111,212,.10);
}

body {
  font-family: 'Microsoft YaHei', '微软雅黑', Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-size: 16px;
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; color: var(--primary-dark); }

/* ===== HEADER ===== */
header {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
  color: #fff;
  padding: 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 12px rgba(14,79,160,.25);
}
.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
}
.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: 1px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.logo span { color: var(--accent); }
nav a {
  color: rgba(255,255,255,.9);
  margin-left: 24px;
  font-size: .97rem;
  font-weight: 500;
  transition: color .2s;
}
nav a:hover { color: var(--accent); text-decoration: none; }

/* ===== HERO ===== */
.hero {
  background: linear-gradient(135deg, #0e4fa0 0%, #1a6fd4 60%, #2196f3 100%);
  color: #fff;
  padding: 72px 24px 64px;
  text-align: center;
}
.hero h1 {
  font-size: 2.6rem;
  font-weight: 800;
  margin-bottom: 18px;
  text-shadow: 0 2px 8px rgba(0,0,0,.2);
}
.hero p {
  font-size: 1.18rem;
  color: rgba(255,255,255,.88);
  max-width: 680px;
  margin: 0 auto 32px;
}
.btn {
  display: inline-block;
  padding: 14px 40px;
  border-radius: 50px;
  font-size: 1.08rem;
  font-weight: 700;
  cursor: pointer;
  transition: transform .15s, box-shadow .15s;
  border: none;
}
.btn:hover { transform: translateY(-2px); text-decoration: none; }
.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 6px 20px rgba(245,166,35,.40);
}
.btn-primary:hover { background: #e0921a; }
.btn-outline {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255,255,255,.7);
  margin-left: 14px;
}
.btn-outline:hover { background: rgba(255,255,255,.12); }

/* ===== SECTION ===== */
section { padding: 60px 24px; }
.section-title {
  text-align: center;
  font-size: 1.9rem;
  font-weight: 800;
  margin-bottom: 10px;
  color: var(--primary-dark);
}
.section-sub {
  text-align: center;
  color: var(--text-light);
  margin-bottom: 42px;
  font-size: 1.05rem;
}

/* ===== CARDS ===== */
.cards {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 28px;
}
.card {
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 32px 26px;
  border: 1px solid var(--border);
  transition: box-shadow .2s, transform .2s;
}
.card:hover { box-shadow: 0 8px 32px rgba(26,111,212,.16); transform: translateY(-3px); }
.card-icon {
  font-size: 2.4rem;
  margin-bottom: 14px;
}
.card h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 10px; color: var(--primary-dark); }
.card p { color: var(--text-light); font-size: .97rem; }

/* ===== STEPS ===== */
.steps {
  max-width: 860px;
  margin: 0 auto;
  counter-reset: step;
}
.step {
  display: flex;
  gap: 22px;
  align-items: flex-start;
  background: var(--white);
  border-radius: var(--radius);
  padding: 26px 28px;
  margin-bottom: 18px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}
.step-num {
  min-width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.2rem;
  flex-shrink: 0;
}
.step h4 { font-size: 1.06rem; font-weight: 700; margin-bottom: 6px; color: var(--primary-dark); }
.step p { color: var(--text-light); font-size: .96rem; }

/* ===== TABLE ===== */
.tbl-wrap { max-width: 900px; margin: 0 auto; overflow-x: auto; }
table { width: 100%; border-collapse: collapse; background: var(--white); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
th { background: var(--primary); color: #fff; padding: 14px 20px; font-size: .97rem; text-align: left; }
td { padding: 13px 20px; border-bottom: 1px solid var(--border); font-size: .96rem; }
tr:last-child td { border-bottom: none; }
tr:hover td { background: #f0f5ff; }

/* ===== FAQ ===== */
.faq { max-width: 860px; margin: 0 auto; }
.faq-item { background: var(--white); border-radius: var(--radius); border: 1px solid var(--border); margin-bottom: 14px; box-shadow: var(--shadow); }
.faq-q { padding: 18px 24px; font-weight: 700; font-size: 1.02rem; color: var(--primary-dark); cursor: pointer; display: flex; justify-content: space-between; }
.faq-a { padding: 0 24px 18px; color: var(--text-light); font-size: .97rem; }

/* ===== BREADCRUMB ===== */
.breadcrumb {
  max-width: 1200px;
  margin: 0 auto;
  padding: 14px 24px 0;
  font-size: .9rem;
  color: var(--text-light);
}
.breadcrumb a { color: var(--primary); }

/* ===== FOOTER ===== */
footer {
  background: #0d1a2e;
  color: rgba(255,255,255,.65);
  padding: 48px 24px 28px;
  margin-top: 40px;
}
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 36px;
  margin-bottom: 32px;
}
.footer-col h4 { color: #fff; font-size: 1rem; margin-bottom: 14px; }
.footer-col a { display: block; color: rgba(255,255,255,.6); font-size: .93rem; margin-bottom: 8px; }
.footer-col a:hover { color: var(--accent); text-decoration: none; }
.footer-bottom {
  max-width: 1200px;
  margin: 0 auto;
  border-top: 1px solid rgba(255,255,255,.1);
  padding-top: 22px;
  font-size: .88rem;
  text-align: center;
}

/* ===== NOTICE BAR ===== */
.notice-bar {
  background: #fffbe6;
  border-bottom: 1px solid #ffe58f;
  padding: 10px 24px;
  text-align: center;
  font-size: .95rem;
  color: #7d4a00;
}
.notice-bar strong { color: #d46b08; }

/* ===== BADGE ===== */
.badge {
  display: inline-block;
  padding: 3px 12px;
  border-radius: 20px;
  font-size: .82rem;
  font-weight: 700;
  background: var(--accent);
  color: #fff;
  margin-left: 8px;
  vertical-align: middle;
}
.badge-green { background: #52c41a; }
.badge-blue { background: var(--primary); }

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .hero h1 { font-size: 1.8rem; }
  nav { display: none; }
  .btn-outline { display: none; }
}