/* ===== IPIPD 代理网站主样式 ===== */
:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-light: #dbeafe;
  --secondary: #7c3aed;
  --accent: #06b6d4;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --dark: #0f172a;
  --dark-2: #1e293b;
  --dark-3: #334155;
  --gray: #64748b;
  --gray-light: #94a3b8;
  --border: #e2e8f0;
  --bg: #f8fafc;
  --white: #ffffff;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 4px 6px -1px rgba(0,0,0,.1), 0 2px 4px -2px rgba(0,0,0,.1);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,.1), 0 4px 6px -4px rgba(0,0,0,.1);
  --shadow-xl: 0 20px 25px -5px rgba(0,0,0,.1), 0 8px 10px -6px rgba(0,0,0,.1);
  --transition: all .2s ease;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; color: var(--dark); background: var(--bg); line-height: 1.6; }
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary-dark); }
img { max-width: 100%; height: auto; }
ul { list-style: none; }

/* ===== 公告栏 ===== */
.announcement-bar { background: linear-gradient(135deg, var(--primary), var(--secondary)); color: white; text-align: center; padding: 10px 20px; font-size: .875rem; position: relative; }
.announcement-bar .close-ann { position: absolute; right: 16px; top: 50%; transform: translateY(-50%); background: none; border: none; color: white; font-size: 1.2rem; cursor: pointer; }

/* ===== 导航栏 ===== */
.site-header { background: rgba(255,255,255,.95); backdrop-filter: blur(10px); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 1000; box-shadow: var(--shadow); }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.header-inner { display: flex; align-items: center; gap: 24px; height: 70px; }
.logo { display: flex; align-items: center; }
.logo-text { font-size: 1.25rem; font-weight: 700; color: var(--dark); }
.logo-text i { color: var(--primary); margin-right: 8px; }
.main-nav { display: flex; gap: 4px; flex: 1; }
.nav-link { padding: 8px 14px; border-radius: var(--radius-sm); color: var(--gray); font-size: .9rem; font-weight: 500; transition: var(--transition); }
.nav-link:hover, .nav-link.active { color: var(--primary); background: var(--primary-light); }
.header-actions { display: flex; gap: 8px; align-items: center; }
.mobile-menu-btn { display: none; background: none; border: none; font-size: 1.4rem; cursor: pointer; color: var(--dark); }
.mobile-menu { display: none; flex-direction: column; padding: 12px 20px; border-top: 1px solid var(--border); background: white; }
.mobile-menu.open { display: flex; }
.mobile-menu .nav-link { padding: 12px 0; border-bottom: 1px solid var(--border); border-radius: 0; }

/* ===== 按钮 ===== */
.btn { display: inline-flex; align-items: center; gap: 6px; padding: 10px 20px; border-radius: var(--radius-sm); font-size: .9rem; font-weight: 500; cursor: pointer; border: none; transition: var(--transition); text-decoration: none; }
.btn-sm { padding: 6px 14px; font-size: .8rem; }
.btn-lg { padding: 14px 28px; font-size: 1rem; }
.btn-xl { padding: 16px 36px; font-size: 1.1rem; border-radius: var(--radius); }
.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover { background: var(--primary-dark); color: white; transform: translateY(-1px); box-shadow: var(--shadow); }
.btn-secondary { background: var(--secondary); color: white; }
.btn-secondary:hover { background: #6d28d9; color: white; }
.btn-success { background: var(--success); color: white; }
.btn-success:hover { background: #059669; color: white; }
.btn-danger { background: var(--danger); color: white; }
.btn-outline { background: transparent; color: var(--primary); border: 1.5px solid var(--primary); }
.btn-outline:hover { background: var(--primary); color: white; }
.btn-ghost { background: transparent; color: var(--gray); }
.btn-ghost:hover { background: var(--bg); color: var(--dark); }
.btn-block { width: 100%; justify-content: center; }
.btn:disabled { opacity: .6; cursor: not-allowed; }

/* ===== Hero 区域 ===== */
.hero { background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 50%, #0f172a 100%); color: white; padding: 100px 0 80px; position: relative; overflow: hidden; }
.hero::before { content: ''; position: absolute; inset: 0; background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E"); }
.hero-content { position: relative; text-align: center; max-width: 800px; margin: 0 auto; }
.hero-badge { display: inline-flex; align-items: center; gap: 6px; background: rgba(37,99,235,.3); border: 1px solid rgba(37,99,235,.5); color: #93c5fd; padding: 6px 16px; border-radius: 100px; font-size: .8rem; margin-bottom: 24px; }
.hero h1 { font-size: clamp(2rem, 5vw, 3.5rem); font-weight: 800; line-height: 1.2; margin-bottom: 20px; }
.hero h1 span { background: linear-gradient(135deg, #60a5fa, #a78bfa); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero p { font-size: 1.1rem; color: #94a3b8; margin-bottom: 36px; max-width: 600px; margin-left: auto; margin-right: auto; }
.hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.hero-stats { display: flex; gap: 40px; justify-content: center; margin-top: 60px; flex-wrap: wrap; }
.hero-stat { text-align: center; }
.hero-stat .num { font-size: 2rem; font-weight: 800; color: white; }
.hero-stat .label { font-size: .85rem; color: #94a3b8; margin-top: 4px; }

/* ===== 特性卡片 ===== */
.features-section { padding: 80px 0; background: white; }
.section-header { text-align: center; margin-bottom: 60px; }
.section-header h2 { font-size: clamp(1.5rem, 3vw, 2.2rem); font-weight: 700; color: var(--dark); margin-bottom: 12px; }
.section-header p { color: var(--gray); font-size: 1rem; max-width: 600px; margin: 0 auto; }
.features-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 24px; }
.feature-card { padding: 32px 24px; border-radius: var(--radius); border: 1px solid var(--border); background: white; transition: var(--transition); }
.feature-card:hover { border-color: var(--primary); box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.feature-icon { width: 56px; height: 56px; border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; font-size: 1.5rem; margin-bottom: 20px; }
.feature-icon.blue { background: var(--primary-light); color: var(--primary); }
.feature-icon.purple { background: #ede9fe; color: var(--secondary); }
.feature-icon.cyan { background: #cffafe; color: #0891b2; }
.feature-icon.green { background: #d1fae5; color: var(--success); }
.feature-card h3 { font-size: 1.05rem; font-weight: 600; margin-bottom: 8px; }
.feature-card p { color: var(--gray); font-size: .9rem; }

/* ===== 产品卡片 ===== */
.products-section { padding: 80px 0; background: var(--bg); }
.products-filter { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 32px; justify-content: center; }
.filter-btn { padding: 8px 18px; border-radius: 100px; border: 1.5px solid var(--border); background: white; color: var(--gray); font-size: .85rem; cursor: pointer; transition: var(--transition); }
.filter-btn.active, .filter-btn:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-light); }
.products-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 20px; }
.product-card { background: white; border-radius: var(--radius); border: 1px solid var(--border); overflow: hidden; transition: var(--transition); }
.product-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-2px); border-color: var(--primary); }
.product-card-header { padding: 20px; background: linear-gradient(135deg, var(--primary), var(--secondary)); color: white; }
.product-flag { font-size: 2rem; margin-bottom: 8px; }
.product-card-header h3 { font-size: 1.05rem; font-weight: 600; }
.product-card-header .region { font-size: .8rem; opacity: .8; margin-top: 2px; }
.product-card-body { padding: 20px; }
.product-price { display: flex; align-items: baseline; gap: 4px; margin-bottom: 16px; }
.product-price .amount { font-size: 1.8rem; font-weight: 800; color: var(--primary); }
.product-price .unit { color: var(--gray); font-size: .85rem; }
.product-features { margin-bottom: 20px; }
.product-features li { display: flex; align-items: center; gap: 8px; font-size: .85rem; color: var(--gray); padding: 4px 0; }
.product-features li i { color: var(--success); font-size: .75rem; }
.hot-badge { display: inline-block; background: linear-gradient(135deg, #f59e0b, #ef4444); color: white; font-size: .7rem; padding: 2px 8px; border-radius: 100px; margin-left: 8px; font-weight: 600; }

/* ===== 价格表 ===== */
.pricing-table { width: 100%; border-collapse: collapse; background: white; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.pricing-table th { background: var(--dark); color: white; padding: 14px 16px; text-align: left; font-size: .875rem; font-weight: 600; }
.pricing-table td { padding: 12px 16px; border-bottom: 1px solid var(--border); font-size: .875rem; }
.pricing-table tr:last-child td { border-bottom: none; }
.pricing-table tr:hover td { background: var(--bg); }
.pricing-table .price-cell { font-weight: 700; color: var(--primary); }
.pricing-table .flag { font-size: 1.1rem; margin-right: 6px; }

/* ===== 购买弹窗 ===== */
.modal-overlay { display: none; position: fixed; inset: 0; background: rgba(0,0,0,.5); z-index: 2000; align-items: center; justify-content: center; }
.modal-overlay.open { display: flex; }
.modal { background: white; border-radius: var(--radius); padding: 32px; max-width: 480px; width: 90%; max-height: 90vh; overflow-y: auto; box-shadow: var(--shadow-xl); }
.modal-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 24px; }
.modal-header h3 { font-size: 1.2rem; font-weight: 700; }
.modal-close { background: none; border: none; font-size: 1.4rem; cursor: pointer; color: var(--gray); }
.modal-close:hover { color: var(--dark); }

/* ===== 表单 ===== */
.form-group { margin-bottom: 20px; }
.form-label { display: block; font-size: .875rem; font-weight: 500; color: var(--dark-3); margin-bottom: 6px; }
.form-control { width: 100%; padding: 10px 14px; border: 1.5px solid var(--border); border-radius: var(--radius-sm); font-size: .9rem; transition: var(--transition); background: white; }
.form-control:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37,99,235,.1); }
.form-control.error { border-color: var(--danger); }
.form-hint { font-size: .8rem; color: var(--gray); margin-top: 4px; }
.form-error { font-size: .8rem; color: var(--danger); margin-top: 4px; }
.input-group { display: flex; }
.input-group .form-control { border-radius: var(--radius-sm) 0 0 var(--radius-sm); border-right: none; }
.input-group .btn { border-radius: 0 var(--radius-sm) var(--radius-sm) 0; }

/* ===== 用户中心 ===== */
.dashboard-layout { display: grid; grid-template-columns: 240px 1fr; gap: 24px; padding: 40px 0; min-height: calc(100vh - 200px); }
.sidebar { background: white; border-radius: var(--radius); border: 1px solid var(--border); padding: 20px; height: fit-content; position: sticky; top: 90px; }
.sidebar-user { text-align: center; padding-bottom: 20px; border-bottom: 1px solid var(--border); margin-bottom: 16px; }
.sidebar-avatar { width: 64px; height: 64px; border-radius: 50%; background: linear-gradient(135deg, var(--primary), var(--secondary)); display: flex; align-items: center; justify-content: center; color: white; font-size: 1.5rem; font-weight: 700; margin: 0 auto 12px; }
.sidebar-username { font-weight: 600; font-size: .95rem; }
.sidebar-balance { color: var(--primary); font-weight: 700; font-size: 1.1rem; margin-top: 4px; }
.sidebar-nav a { display: flex; align-items: center; gap: 10px; padding: 10px 12px; border-radius: var(--radius-sm); color: var(--gray); font-size: .875rem; transition: var(--transition); margin-bottom: 4px; }
.sidebar-nav a:hover, .sidebar-nav a.active { color: var(--primary); background: var(--primary-light); }
.sidebar-nav a i { width: 18px; }
.main-content { min-width: 0; }
.page-card { background: white; border-radius: var(--radius); border: 1px solid var(--border); padding: 28px; margin-bottom: 24px; }
.page-card-title { font-size: 1.1rem; font-weight: 700; margin-bottom: 20px; padding-bottom: 16px; border-bottom: 1px solid var(--border); display: flex; align-items: center; gap: 8px; }

/* ===== 表格 ===== */
.table-wrap { overflow-x: auto; }
.data-table { width: 100%; border-collapse: collapse; }
.data-table th { background: var(--bg); padding: 12px 16px; text-align: left; font-size: .8rem; font-weight: 600; color: var(--gray); text-transform: uppercase; letter-spacing: .05em; border-bottom: 1px solid var(--border); }
.data-table td { padding: 14px 16px; border-bottom: 1px solid var(--border); font-size: .875rem; }
.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: var(--bg); }

/* ===== 状态徽章 ===== */
.badge { display: inline-flex; align-items: center; gap: 4px; padding: 3px 10px; border-radius: 100px; font-size: .75rem; font-weight: 600; }
.badge-success { background: #d1fae5; color: #065f46; }
.badge-warning { background: #fef3c7; color: #92400e; }
.badge-danger { background: #fee2e2; color: #991b1b; }
.badge-info { background: #dbeafe; color: #1e40af; }
.badge-gray { background: var(--bg); color: var(--gray); }

/* ===== 统计卡片 ===== */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 16px; margin-bottom: 24px; }
.stat-card { background: white; border-radius: var(--radius); border: 1px solid var(--border); padding: 20px; }
.stat-card .stat-label { font-size: .8rem; color: var(--gray); margin-bottom: 8px; }
.stat-card .stat-value { font-size: 1.6rem; font-weight: 800; color: var(--dark); }
.stat-card .stat-sub { font-size: .8rem; color: var(--gray); margin-top: 4px; }
.stat-card.blue { border-left: 4px solid var(--primary); }
.stat-card.green { border-left: 4px solid var(--success); }
.stat-card.purple { border-left: 4px solid var(--secondary); }
.stat-card.orange { border-left: 4px solid var(--warning); }

/* ===== 支付页面 ===== */
.payment-methods { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 12px; margin-bottom: 24px; }
.payment-method { border: 2px solid var(--border); border-radius: var(--radius-sm); padding: 16px; text-align: center; cursor: pointer; transition: var(--transition); }
.payment-method:hover, .payment-method.selected { border-color: var(--primary); background: var(--primary-light); }
.payment-method i { font-size: 1.8rem; margin-bottom: 8px; display: block; }
.payment-method span { font-size: .85rem; font-weight: 500; }
.payment-method.alipay i { color: #1677ff; }
.payment-method.wechat i { color: #07c160; }
.payment-method.usdt i { color: #26a17b; }
.payment-method.balance i { color: var(--primary); }

/* ===== 管理后台 ===== */
.admin-layout { display: grid; grid-template-columns: 220px 1fr; min-height: 100vh; }
.admin-sidebar { background: var(--dark); color: white; padding: 0; }
.admin-logo { padding: 20px; border-bottom: 1px solid rgba(255,255,255,.1); font-size: 1rem; font-weight: 700; display: flex; align-items: center; gap: 8px; }
.admin-logo i { color: var(--accent); }
.admin-nav { padding: 12px 0; }
.admin-nav a { display: flex; align-items: center; gap: 10px; padding: 11px 20px; color: #94a3b8; font-size: .875rem; transition: var(--transition); }
.admin-nav a:hover, .admin-nav a.active { color: white; background: rgba(255,255,255,.08); border-left: 3px solid var(--primary); }
.admin-nav .nav-section { padding: 16px 20px 6px; font-size: .7rem; text-transform: uppercase; letter-spacing: .1em; color: #475569; }
.admin-main { background: var(--bg); }
.admin-topbar { background: white; border-bottom: 1px solid var(--border); padding: 0 24px; height: 60px; display: flex; align-items: center; justify-content: space-between; }
.admin-content { padding: 24px; }

/* ===== 通知 ===== */
.alert { padding: 14px 16px; border-radius: var(--radius-sm); margin-bottom: 16px; display: flex; align-items: flex-start; gap: 10px; font-size: .875rem; }
.alert-success { background: #d1fae5; color: #065f46; border: 1px solid #a7f3d0; }
.alert-danger { background: #fee2e2; color: #991b1b; border: 1px solid #fca5a5; }
.alert-warning { background: #fef3c7; color: #92400e; border: 1px solid #fde68a; }
.alert-info { background: #dbeafe; color: #1e40af; border: 1px solid #bfdbfe; }

/* ===== 分页 ===== */
.pagination { display: flex; gap: 6px; justify-content: center; margin-top: 24px; }
.page-btn { width: 36px; height: 36px; display: flex; align-items: center; justify-content: center; border-radius: var(--radius-sm); border: 1px solid var(--border); background: white; color: var(--gray); font-size: .875rem; cursor: pointer; transition: var(--transition); }
.page-btn.active, .page-btn:hover { background: var(--primary); color: white; border-color: var(--primary); }

/* ===== 页脚 ===== */
.site-footer { background: var(--dark); color: #94a3b8; padding: 60px 0 30px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-col h4 { color: white; font-size: .95rem; font-weight: 600; margin-bottom: 16px; display: flex; align-items: center; gap: 8px; }
.footer-col p { font-size: .875rem; line-height: 1.7; }
.footer-col ul li { margin-bottom: 8px; }
.footer-col ul li a { color: #94a3b8; font-size: .875rem; }
.footer-col ul li a:hover { color: white; }
.social-links { display: flex; gap: 12px; margin-top: 16px; }
.social-links a { width: 36px; height: 36px; border-radius: 50%; background: rgba(255,255,255,.1); display: flex; align-items: center; justify-content: center; color: #94a3b8; transition: var(--transition); }
.social-links a:hover { background: var(--primary); color: white; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); padding-top: 24px; display: flex; justify-content: space-between; align-items: center; font-size: .8rem; flex-wrap: wrap; gap: 12px; }
.footer-bottom a { color: #94a3b8; }
.footer-bottom a:hover { color: white; }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .dashboard-layout { grid-template-columns: 1fr; }
  .sidebar { position: static; }
}
@media (max-width: 768px) {
  .main-nav, .header-actions { display: none; }
  .mobile-menu-btn { display: block; }
  .hero { padding: 60px 0 50px; }
  .hero-stats { gap: 20px; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .admin-layout { grid-template-columns: 1fr; }
  .admin-sidebar { display: none; }
  .products-grid { grid-template-columns: 1fr; }
}

/* ===== 工具类 ===== */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--gray); }
.text-primary { color: var(--primary); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.fw-bold { font-weight: 700; }
.mt-1 { margin-top: 8px; } .mt-2 { margin-top: 16px; } .mt-3 { margin-top: 24px; } .mt-4 { margin-top: 32px; }
.mb-1 { margin-bottom: 8px; } .mb-2 { margin-bottom: 16px; } .mb-3 { margin-bottom: 24px; }
.d-flex { display: flex; } .align-center { align-items: center; } .justify-between { justify-content: space-between; }
.gap-1 { gap: 8px; } .gap-2 { gap: 16px; }
.section { padding: 80px 0; }
.section-alt { background: white; }

/* ===== 加载动画 ===== */
.spinner { width: 24px; height: 24px; border: 3px solid var(--border); border-top-color: var(--primary); border-radius: 50%; animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ===== 复制按钮 ===== */
.copy-btn { background: none; border: 1px solid var(--border); border-radius: 4px; padding: 2px 8px; font-size: .75rem; cursor: pointer; color: var(--gray); transition: var(--transition); }
.copy-btn:hover { background: var(--primary); color: white; border-color: var(--primary); }

/* ===== 代理信息展示 ===== */
.proxy-info-card { background: var(--dark); color: white; border-radius: var(--radius-sm); padding: 16px; font-family: 'Courier New', monospace; font-size: .85rem; }
.proxy-info-card .proxy-line { display: flex; justify-content: space-between; align-items: center; padding: 4px 0; border-bottom: 1px solid rgba(255,255,255,.1); }
.proxy-info-card .proxy-line:last-child { border-bottom: none; }
.proxy-info-card .proxy-key { color: #94a3b8; }
.proxy-info-card .proxy-val { color: #60a5fa; }