/* 代理IP商城 - 公共样式（浅色主题） */
:root {
  --primary: #4f46e5;
  --primary-dark: #4338ca;
  --primary-light: #eef2ff;
  --accent: #0ea5e9;
  --success: #16a34a;
  --danger: #dc2626;
  --warning: #d97706;
  --text: #0f172a;
  --text-2: #475569;
  --text-3: #94a3b8;
  --border: #e2e8f0;
  --bg: #f8fafc;
  --card: #ffffff;
  --radius: 12px;
  --shadow: 0 1px 3px rgba(15, 23, 42, .08), 0 8px 24px rgba(15, 23, 42, .06);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", -apple-system, "Segoe UI", sans-serif;
  color: var(--text); background: var(--bg); line-height: 1.6; font-size: 15px;
}
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
.container { max-width: 1120px; margin: 0 auto; padding: 0 20px; }

/* ===== 导航 ===== */
.nav {
  position: sticky; top: 0; z-index: 100; background: rgba(255,255,255,.92);
  backdrop-filter: blur(10px); border-bottom: 1px solid var(--border);
}
.nav-inner { display: flex; align-items: center; height: 62px; gap: 28px; }
.logo { font-size: 20px; font-weight: 800; color: var(--primary); display: flex; align-items: center; gap: 8px; }
.logo .dot { width: 10px; height: 10px; border-radius: 50%; background: linear-gradient(135deg, var(--primary), var(--accent)); }
.nav-links { display: flex; gap: 24px; flex: 1; }
.nav-links a { color: var(--text-2); font-size: 14px; font-weight: 500; transition: color .15s; }
.nav-links a:hover, .nav-links a.active { color: var(--primary); }
.nav-auth { display: flex; align-items: center; gap: 12px; }
.nav-user { display: flex; align-items: center; gap: 10px; font-size: 14px; color: var(--text-2); }
.avatar {
  width: 32px; height: 32px; border-radius: 50%; background: var(--primary-light);
  color: var(--primary); display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 14px;
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 10px 22px; border-radius: 8px; border: 1px solid transparent;
  font-size: 14px; font-weight: 600; transition: all .15s; white-space: nowrap;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-outline { background: transparent; border-color: var(--primary); color: var(--primary); }
.btn-outline:hover { background: var(--primary-light); }
.btn-ghost { background: transparent; color: var(--text-2); border-color: var(--border); }
.btn-ghost:hover { border-color: var(--text-3); color: var(--text); }
.btn-lg { padding: 13px 32px; font-size: 16px; border-radius: 10px; }
.btn-sm { padding: 6px 14px; font-size: 13px; }
.btn:disabled { opacity: .55; cursor: not-allowed; }

/* ===== 卡片 / 区块 ===== */
.card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); }
.section { padding: 72px 0; }
.section-title { text-align: center; font-size: 30px; font-weight: 800; margin-bottom: 12px; }
.section-sub { text-align: center; color: var(--text-2); margin-bottom: 44px; font-size: 15px; }
.badge {
  display: inline-block; padding: 3px 10px; border-radius: 999px; font-size: 12px; font-weight: 600;
}
.badge-blue { background: var(--primary-light); color: var(--primary); }
.badge-green { background: #dcfce7; color: var(--success); }
.badge-orange { background: #fef3c7; color: var(--warning); }
.badge-gray { background: #f1f5f9; color: var(--text-2); }
.badge-red { background: #fee2e2; color: var(--danger); }

/* ===== Hero ===== */
.hero {
  background: linear-gradient(135deg, #eef2ff 0%, #f0f9ff 55%, #f8fafc 100%);
  padding: 84px 0 68px; text-align: center;
}
.hero h1 { font-size: 44px; font-weight: 900; line-height: 1.25; letter-spacing: -1px; }
.hero h1 .grad { background: linear-gradient(90deg, var(--primary), var(--accent)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero p { color: var(--text-2); font-size: 17px; margin: 18px auto 32px; max-width: 640px; }
.hero-actions { display: flex; gap: 14px; justify-content: center; }
.hero-feats { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-top: 40px; }
.feat-pill {
  background: #fff; border: 1px solid var(--border); border-radius: 999px;
  padding: 8px 18px; font-size: 13px; color: var(--text-2); display: flex; align-items: center; gap: 7px;
}
.feat-pill b { color: var(--text); }

/* ===== 网格 ===== */
.grid { display: grid; gap: 20px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 860px) { .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; } }

/* ===== 产品卡 ===== */
.product-card { padding: 28px; position: relative; display: flex; flex-direction: column; gap: 14px; transition: transform .15s, box-shadow .15s; }
.product-card:hover { transform: translateY(-3px); }
.product-card .price { font-size: 28px; font-weight: 800; color: var(--primary); }
.product-card .price small { font-size: 14px; color: var(--text-3); font-weight: 500; }
.product-feats { list-style: none; display: flex; flex-direction: column; gap: 8px; font-size: 14px; color: var(--text-2); }
.product-feats li::before { content: "✓"; color: var(--success); font-weight: 700; margin-right: 8px; }

/* ===== 表单 ===== */
.field { display: flex; flex-direction: column; gap: 6px; }
.field label { font-size: 13px; font-weight: 600; color: var(--text-2); }
.input, select.input {
  width: 100%; padding: 11px 14px; border: 1px solid var(--border); border-radius: 8px;
  font-size: 14px; background: #fff; color: var(--text); outline: none; transition: border-color .15s, box-shadow .15s;
}
.input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-light); }
.otp-row { display: flex; gap: 10px; }
.otp-row .input { flex: 1; }
.form-error { color: var(--danger); font-size: 13px; min-height: 18px; }

/* ===== 表格 ===== */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 13px 16px; border-bottom: 1px solid var(--border); }
th { font-size: 12px; font-weight: 700; color: var(--text-3); text-transform: uppercase; letter-spacing: .04em; background: var(--bg); }
tr:last-child td { border-bottom: none; }

/* ===== 凭据块 ===== */
.cred-box {
  background: #0f172a; color: #a5f3fc; font-family: Consolas, "Courier New", monospace;
  padding: 14px 16px; border-radius: 8px; font-size: 13px; line-height: 1.8;
  word-break: break-all; position: relative;
}

/* ===== 弹窗 ===== */
.modal-mask {
  position: fixed; inset: 0; background: rgba(15, 23, 42, .5); z-index: 200;
  display: flex; align-items: center; justify-content: center; padding: 20px;
}
.modal { background: #fff; border-radius: 14px; max-width: 480px; width: 100%; padding: 28px; max-height: 90vh; overflow-y: auto; }
.modal h3 { font-size: 19px; margin-bottom: 6px; }
.modal .modal-sub { color: var(--text-2); font-size: 14px; margin-bottom: 20px; }

/* ===== 提示条 ===== */
.toast {
  position: fixed; bottom: 28px; left: 50%; transform: translateX(-50%) translateY(80px);
  background: var(--text); color: #fff; padding: 11px 22px; border-radius: 999px;
  font-size: 14px; z-index: 300; opacity: 0; transition: all .25s; pointer-events: none;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ===== 页脚 ===== */
.footer { background: #0f172a; color: #94a3b8; padding: 44px 0 28px; margin-top: 72px; font-size: 13px; }
.footer-inner { display: flex; justify-content: space-between; gap: 32px; flex-wrap: wrap; }
.footer a { color: #cbd5e1; }
.footer h4 { color: #e2e8f0; font-size: 14px; margin-bottom: 12px; }
.footer-links { display: flex; flex-direction: column; gap: 8px; }
.footer-bottom { border-top: 1px solid #1e293b; margin-top: 32px; padding-top: 20px; text-align: center; color: #64748b; }

/* ===== FAQ ===== */
.faq-item { border-bottom: 1px solid var(--border); padding: 18px 0; cursor: pointer; }
.faq-q { font-weight: 600; display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.faq-q::after { content: "+"; color: var(--text-3); font-size: 20px; transition: transform .2s; }
.faq-item.open .faq-q::after { transform: rotate(45deg); }
.faq-a { color: var(--text-2); font-size: 14px; max-height: 0; overflow: hidden; transition: max-height .25s ease; }
.faq-item.open .faq-a { max-height: 300px; padding-top: 10px; }

/* 计算器 */
.calc { padding: 30px; display: grid; grid-template-columns: 1fr 1fr; gap: 26px; }
@media (max-width: 760px) { .calc { grid-template-columns: 1fr; } }
.calc-result { background: var(--primary-light); border-radius: 10px; padding: 24px; display: flex; flex-direction: column; justify-content: center; }
.calc-result .amount { font-size: 36px; font-weight: 900; color: var(--primary); }
.step-tag {
  display: inline-flex; align-items: center; justify-content: center;
  width: 22px; height: 22px; border-radius: 50%; background: var(--primary); color: #fff;
  font-size: 12px; font-weight: 700; margin-right: 8px; flex-shrink: 0;
}
.empty-state { text-align: center; padding: 56px 20px; color: var(--text-3); }
.spinner {
  width: 18px; height: 18px; border: 2px solid rgba(255,255,255,.4); border-top-color: #fff;
  border-radius: 50%; animation: spin .7s linear infinite; display: inline-block;
}
.spinner.dark { border-color: var(--border); border-top-color: var(--primary); }
@keyframes spin { to { transform: rotate(360deg); } }

/* ===== v2: 资金中心 / 购买页 / 实例 ===== */
.nav-balance{display:inline-flex;align-items:center;gap:6px;padding:6px 12px;border-radius:20px;background:#f0fdf4;color:#15803d;font-size:13px;margin-right:10px;text-decoration:none}
.nav-balance b{font-weight:700}
.area-tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:14px}
.area-tab{padding:7px 16px;border-radius:20px;border:1px solid var(--border);background:#fff;font-size:13px;cursor:pointer;color:var(--text-2)}
.area-tab.active{background:var(--primary);border-color:var(--primary);color:#fff}
.region-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:10px}
.region-card{border:1.5px solid var(--border);border-radius:12px;padding:14px;cursor:pointer;transition:all .15s;background:#fff;position:relative}
.region-card:hover{border-color:var(--primary)}
.region-card.selected{border-color:var(--primary);background:#eef2ff;box-shadow:0 0 0 3px rgba(79,70,229,.12)}
.region-card .r-name{font-weight:600;font-size:14px}
.region-card .r-meta{font-size:12px;color:var(--text-3);margin-top:4px}
.region-card .r-price{font-size:15px;font-weight:700;color:var(--primary);margin-top:8px}
.region-card .r-price small{font-weight:400;color:var(--text-3);font-size:11px}
.region-card .r-stock{position:absolute;top:10px;right:12px;font-size:11px;color:var(--text-3)}
.chips{display:flex;gap:8px;flex-wrap:wrap}
.chip{padding:8px 18px;border-radius:10px;border:1.5px solid var(--border);background:#fff;cursor:pointer;font-size:13px;color:var(--text-2)}
.chip.active{border-color:var(--primary);background:#eef2ff;color:var(--primary);font-weight:600}
.stepper{display:inline-flex;align-items:center;border:1px solid var(--border);border-radius:10px;overflow:hidden}
.stepper button{width:36px;height:36px;border:none;background:#f8fafc;font-size:16px;cursor:pointer;color:var(--text-2)}
.stepper button:hover{background:#eef2ff}
.stepper input{width:70px;height:36px;border:none;text-align:center;font-size:14px;outline:none}
.summary-row{display:flex;justify-content:space-between;font-size:13px;color:var(--text-2);padding:5px 0}
.summary-row.total{border-top:1px dashed var(--border);margin-top:8px;padding-top:12px;font-size:17px;font-weight:700;color:var(--text-1)}
.summary-row .minus{color:var(--success)}
.product-card{border:1.5px solid var(--border);border-radius:14px;padding:18px;cursor:pointer;flex:1;background:#fff;position:relative}
.product-card.selected{border-color:var(--primary);background:#eef2ff}
.product-card.disabled{opacity:.55;cursor:not-allowed}
.product-card h4{font-size:15px;margin-bottom:4px}
.product-card p{font-size:12px;color:var(--text-3)}
.product-card .tag-soon{position:absolute;top:12px;right:12px;background:#e2e8f0;color:#64748b;font-size:11px;padding:2px 8px;border-radius:10px}
.modal-mask{position:fixed;inset:0;background:rgba(15,23,42,.45);display:none;align-items:center;justify-content:center;z-index:100}
.modal{background:#fff;border-radius:16px;padding:26px;width:440px;max-width:92vw;max-height:88vh;overflow:auto}
.modal h3{font-size:17px;margin-bottom:16px}
.pkg-card{border:1.5px solid var(--border);border-radius:12px;padding:16px;cursor:pointer;text-align:center;background:#fff;position:relative}
.pkg-card.selected{border-color:var(--primary);background:#eef2ff}
.pkg-card .p-amount{font-size:20px;font-weight:700}
.pkg-card .p-bonus{color:var(--success);font-size:12px;margin-top:4px;font-weight:600}
.amount-plus{color:var(--success);font-weight:600}
.tx-in{color:var(--success);font-weight:600}
.tx-out{color:var(--danger);font-weight:600}
.type-badge{font-size:11px;padding:2px 8px;border-radius:8px;background:#f1f5f9;color:#475569}
.tabs-line{display:flex;gap:22px;border-bottom:1.5px solid var(--border);margin-bottom:18px}
.tabs-line button{border:none;background:none;padding:10px 2px;font-size:14px;cursor:pointer;color:var(--text-3);border-bottom:2px solid transparent}
.tabs-line button.active{color:var(--primary);border-bottom-color:var(--primary);font-weight:600}
.stat-mini{display:flex;flex-direction:column;gap:2px}
.stat-mini .v{font-size:20px;font-weight:700}
.stat-mini .l{font-size:12px;color:var(--text-3)}