/* ========== Reset & Base ========== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: #333; background: #f8f9fa; line-height: 1.6;
}
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

/* ========== Layout ========== */
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* ========== Header / Nav ========== */
.site-header {
  background: #fff; position: sticky; top: 0; z-index: 1000;
  box-shadow: 0 2px 8px rgba(0,0,0,.06);
}
.site-header .container {
  display: flex; align-items: center; justify-content: space-between; height: 68px;
}
.logo { font-size: 1.35rem; font-weight: 700; color: #1a73e8; white-space: nowrap; }
.logo span { color: #333; }

.main-nav ul { display: flex; gap: 6px; }
.main-nav a {
  display: block; padding: 8px 16px; border-radius: 6px; font-size: .95rem;
  transition: background .2s, color .2s;
}
.main-nav a:hover, .main-nav a.active { background: #e8f0fe; color: #1a73e8; }

.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: #333; margin: 5px 0; transition: .3s; }

/* ========== Hero ========== */
.hero {
  background: linear-gradient(135deg, #1a73e8, #0d47a1);
  color: #fff; text-align: center; padding: 100px 20px 80px;
}
.hero h1 { font-size: 2.6rem; margin-bottom: 16px; }
.hero .subtitle { font-size: 1.2rem; opacity: .9; margin-bottom: 48px; }
.hero-services { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 24px; max-width: 960px; margin: 0 auto; }
.hero-card {
  background: rgba(255,255,255,.12); backdrop-filter: blur(6px);
  border-radius: 12px; padding: 32px 20px; transition: transform .25s;
}
.hero-card:hover { transform: translateY(-4px); }
.hero-card .icon { font-size: 2.4rem; margin-bottom: 12px; }
.hero-card h3 { font-size: 1.05rem; }

/* ========== Section ========== */
.section { padding: 80px 0; }
.section.alt { background: #fff; }
.section-title { text-align: center; font-size: 2rem; margin-bottom: 12px; color: #1a2b49; }
.section-desc { text-align: center; color: #666; max-width: 680px; margin: 0 auto 48px; }

/* ========== Cards Grid ========== */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 28px; }
.card {
  background: #fff; border-radius: 12px; padding: 36px 28px;
  box-shadow: 0 4px 16px rgba(0,0,0,.05); transition: box-shadow .3s, transform .3s;
}
.card:hover { box-shadow: 0 8px 28px rgba(0,0,0,.1); transform: translateY(-3px); }
.card .icon { font-size: 2.4rem; margin-bottom: 16px; }
.card h3 { font-size: 1.15rem; margin-bottom: 10px; color: #1a2b49; }
.card p { color: #666; font-size: .95rem; }

/* ========== Pricing / Packages ========== */
.packages { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 28px; }
.pkg {
  background: #fff; border-radius: 14px; padding: 40px 28px; text-align: center;
  box-shadow: 0 4px 16px rgba(0,0,0,.05); position: relative; overflow: hidden;
  transition: box-shadow .3s, transform .3s;
}
.pkg:hover { box-shadow: 0 8px 28px rgba(0,0,0,.1); transform: translateY(-3px); }
.pkg.featured { border: 2px solid #1a73e8; }
.pkg.featured::after {
  content: "推荐"; position: absolute; top: 18px; right: -30px;
  background: #1a73e8; color: #fff; font-size: .75rem; padding: 4px 36px;
  transform: rotate(45deg);
}
.pkg h3 { font-size: 1.2rem; margin-bottom: 8px; color: #1a2b49; }
.pkg .price { font-size: 1.5rem; font-weight: 700; color: #1a73e8; margin-bottom: 20px; }
.pkg ul { text-align: left; margin-bottom: 28px; }
.pkg li { padding: 8px 0; border-bottom: 1px solid #f0f0f0; font-size: .93rem; color: #555; }
.pkg li::before { content: "✓ "; color: #1a73e8; font-weight: 700; }
.btn-primary {
  display: inline-block; background: #1a73e8; color: #fff; padding: 12px 32px;
  border-radius: 8px; font-size: .95rem; border: none; cursor: pointer;
  transition: background .2s;
}
.btn-primary:hover { background: #1558b0; }

/* ========== About ========== */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
.about-info h3 { font-size: 1.2rem; color: #1a2b49; margin: 20px 0 8px; }
.about-info p { color: #555; font-size: .95rem; }
.about-biz { background: #e8f0fe; border-radius: 12px; padding: 32px; }
.about-biz h3 { color: #1a73e8; margin-bottom: 12px; }
.about-biz p { color: #444; line-height: 1.8; }

/* ========== Contact ========== */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }
.contact-item { display: flex; gap: 16px; margin-bottom: 28px; }
.contact-item .ci-icon { font-size: 1.6rem; flex-shrink: 0; width: 48px; height: 48px; background: #e8f0fe; border-radius: 10px; display: flex; align-items: center; justify-content: center; }
.contact-item h4 { font-size: 1rem; color: #1a2b49; margin-bottom: 4px; }
.contact-item p { color: #666; font-size: .93rem; }
.contact-form { background: #fff; border-radius: 12px; padding: 36px; box-shadow: 0 4px 16px rgba(0,0,0,.05); }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; margin-bottom: 6px; font-size: .93rem; color: #444; }
.form-group input, .form-group textarea, .form-group select {
  width: 100%; padding: 12px 14px; border: 1px solid #ddd; border-radius: 8px;
  font-size: .95rem; transition: border-color .2s; outline: none;
}
.form-group input:focus, .form-group textarea:focus { border-color: #1a73e8; }
.form-group textarea { resize: vertical; min-height: 100px; }

/* ========== Auth Pages ========== */
.auth-wrapper {
  min-height: calc(100vh - 68px - 220px); display: flex; align-items: center; justify-content: center;
  padding: 60px 20px;
}
.auth-box {
  background: #fff; border-radius: 16px; padding: 44px 40px; width: 100%; max-width: 440px;
  box-shadow: 0 8px 32px rgba(0,0,0,.08);
}
.auth-box h2 { text-align: center; margin-bottom: 28px; color: #1a2b49; }
.auth-tabs { display: flex; margin-bottom: 28px; border-bottom: 2px solid #eee; }
.auth-tabs button {
  flex: 1; padding: 12px; background: none; border: none; cursor: pointer;
  font-size: 1rem; color: #999; border-bottom: 2px solid transparent; margin-bottom: -2px;
  transition: .2s;
}
.auth-tabs button.active { color: #1a73e8; border-bottom-color: #1a73e8; }
.auth-panel { display: none; }
.auth-panel.active { display: block; }
.auth-links { text-align: center; margin-top: 16px; font-size: .88rem; color: #888; }
.auth-links a { color: #1a73e8; }

/* ========== User Center ========== */
.user-layout { display: grid; grid-template-columns: 240px 1fr; gap: 32px; padding: 40px 0; min-height: 60vh; }
.user-sidebar { background: #fff; border-radius: 12px; padding: 24px; box-shadow: 0 4px 16px rgba(0,0,0,.05); align-self: start; }
.user-sidebar .avatar { width: 72px; height: 72px; border-radius: 50%; background: #e8f0fe; display: flex; align-items: center; justify-content: center; font-size: 2rem; margin: 0 auto 12px; }
.user-sidebar .username { text-align: center; font-weight: 600; margin-bottom: 24px; color: #1a2b49; }
.user-sidebar nav a {
  display: block; padding: 10px 16px; border-radius: 8px; margin-bottom: 4px;
  font-size: .93rem; color: #555; transition: .2s;
}
.user-sidebar nav a:hover, .user-sidebar nav a.active { background: #e8f0fe; color: #1a73e8; }
.user-content { background: #fff; border-radius: 12px; padding: 32px; box-shadow: 0 4px 16px rgba(0,0,0,.05); }
.user-content h2 { font-size: 1.3rem; color: #1a2b49; margin-bottom: 24px; border-bottom: 1px solid #eee; padding-bottom: 12px; }

.order-table { width: 100%; border-collapse: collapse; }
.order-table th, .order-table td { padding: 12px 16px; text-align: left; border-bottom: 1px solid #f0f0f0; font-size: .93rem; }
.order-table th { background: #f8f9fa; color: #666; font-weight: 600; }
.status-badge { padding: 4px 12px; border-radius: 20px; font-size: .8rem; }
.status-badge.ongoing { background: #e8f0fe; color: #1a73e8; }
.status-badge.done { background: #e6f4ea; color: #137333; }
.status-badge.pending { background: #fef7e0; color: #b06000; }

.empty-state { text-align: center; padding: 60px 20px; color: #999; }
.empty-state .icon { font-size: 3rem; margin-bottom: 12px; }

/* ========== Legal Pages ========== */
.legal-page { padding: 60px 0; }
.legal-page .container { max-width: 860px; }
.legal-page h1 { font-size: 2rem; color: #1a2b49; margin-bottom: 8px; }
.legal-page .update-date { color: #999; font-size: .88rem; margin-bottom: 36px; }
.legal-page h2 { font-size: 1.25rem; color: #1a2b49; margin: 32px 0 12px; padding-left: 12px; border-left: 3px solid #1a73e8; }
.legal-page p, .legal-page li { color: #555; font-size: .95rem; line-height: 1.8; margin-bottom: 8px; }
.legal-page ul { padding-left: 20px; }
.legal-page li { list-style: disc; }

/* ========== Footer ========== */
.site-footer { background: #1a2b49; color: #ccc; padding: 48px 0 24px; font-size: .88rem; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 36px; }
.footer-grid h4 { color: #fff; margin-bottom: 16px; font-size: 1rem; }
.footer-grid a { display: block; color: #aab; margin-bottom: 8px; transition: color .2s; }
.footer-grid a:hover { color: #fff; }
.footer-brand p { margin-bottom: 8px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.1); padding-top: 20px;
  text-align: center; color: #889;
}
.footer-bottom a { color: #aab; }
.footer-bottom a:hover { color: #fff; }

/* ========== Responsive ========== */
@media (max-width: 900px) {
  .about-grid, .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .user-layout { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .main-nav { display: none; position: absolute; top: 68px; left: 0; right: 0; background: #fff; box-shadow: 0 4px 12px rgba(0,0,0,.08); padding: 12px; }
  .main-nav.open { display: block; }
  .main-nav ul { flex-direction: column; }
  .main-nav a { padding: 12px 16px; }
  .nav-toggle { display: block; }
  .hero h1 { font-size: 1.8rem; }
  .hero .subtitle { font-size: 1rem; }
  .hero { padding: 60px 20px 50px; }
  .section { padding: 48px 0; }
  .section-title { font-size: 1.5rem; }
  .footer-grid { grid-template-columns: 1fr; }
  .auth-box { padding: 32px 24px; }
}