/* ============================================================
   OTA Portal — 视觉规范
   参考风格：深蓝主色 + 金色强调，浅灰底，12px 圆角
   ============================================================ */
:root{
  --bg:#f5f6f8;
  --card:#ffffff;
  --primary:#1f4e79;
  --primary-hover:#163a5c;
  --primary-light:#eef3f8;
  --accent:#e8a838;
  --accent-light:#fdf4e3;
  --text:#2c2c2c;
  --text-secondary:#6b7280;
  --border:#e2e6ea;
  --danger:#dc3545;
  --danger-light:#fdecee;
  --success:#2a7d4f;
  --success-light:#eaf5ef;
  --warn:#b8860b;
  --warn-light:#fdf6e3;
  --shadow:0 2px 16px rgba(0,0,0,.07);
  --shadow-lg:0 10px 40px rgba(15,23,42,.16);
  --radius:12px;
  --font:'Segoe UI',system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;
  --tr:.22s ease;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
body{font-family:var(--font);background:var(--bg);color:var(--text);
  line-height:1.6;min-height:100vh;font-size:15px}
a{color:var(--primary);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,h4{line-height:1.3}

/* ── 顶栏 ── */
.topbar{position:sticky;top:0;z-index:100;background:var(--primary);color:#fff;
  display:flex;align-items:center;justify-content:space-between;
  padding:0 24px;height:58px;box-shadow:0 2px 8px rgba(0,0,0,.15)}
.topbar-brand{display:flex;align-items:center;gap:10px;
  font-size:1.08rem;font-weight:700;color:#fff}
.topbar-brand:hover{text-decoration:none;color:#fff}
.brand-ver{font-size:.68rem;font-weight:600;opacity:.7;background:rgba(255,255,255,.16);
  padding:2px 7px;border-radius:10px;letter-spacing:.3px}
.topbar-links{display:flex;gap:6px;align-items:center;flex-wrap:wrap}
.topbar-links a{color:rgba(255,255,255,.82);font-size:.9rem;font-weight:600;
  padding:6px 11px;border-radius:7px;transition:var(--tr)}
.topbar-links a:hover{color:#fff;background:rgba(255,255,255,.14);text-decoration:none}
.topbar-links a.active{color:#fff;background:rgba(255,255,255,.2)}
.topbar-user{font-size:.82rem;opacity:.92;max-width:240px;overflow:hidden;
  text-overflow:ellipsis;white-space:nowrap;padding-right:4px}
.topbar-sep{width:1px;height:20px;background:rgba(255,255,255,.25);margin:0 6px}

/* ── 容器 ── */
.container{max-width:1000px;margin:0 auto;padding:28px 24px 60px}
.container-wide{max-width:1180px}

/* ── Hero ── */
.hero{background:linear-gradient(135deg,var(--primary) 0%,#2a6291 100%);
  color:#fff;padding:64px 24px 72px;text-align:center}
.hero h1{font-size:2.1rem;font-weight:800;margin-bottom:16px;letter-spacing:-.3px}
.hero p{font-size:1.02rem;opacity:.9;max-width:660px;margin:0 auto;line-height:1.75}
.hero-actions{margin-top:30px;display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.btn-hero{background:var(--accent);color:#3a2a00;border:none;padding:12px 30px;
  border-radius:9px;font-size:.98rem;font-weight:700;cursor:pointer;
  display:inline-block;transition:var(--tr)}
.btn-hero:hover{background:#f0b64a;text-decoration:none;color:#3a2a00;
  transform:translateY(-1px);box-shadow:0 6px 18px rgba(232,168,56,.35)}
.btn-hero-ghost{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.5)}
.btn-hero-ghost:hover{background:rgba(255,255,255,.14);color:#fff;
  box-shadow:none;transform:none}

/* ── 区块标题 ── */
.section-title{font-size:1.35rem;font-weight:800;text-align:center;margin-bottom:8px}
.section-sub{text-align:center;color:var(--text-secondary);font-size:.94rem;
  margin-bottom:32px}

/* ── 流程步骤 ── */
.how{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.how-step{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  padding:24px 20px;box-shadow:var(--shadow);position:relative;transition:var(--tr)}
.how-step:hover{transform:translateY(-3px);box-shadow:0 8px 26px rgba(0,0,0,.1)}
.how-num{width:34px;height:34px;border-radius:50%;background:var(--accent-light);
  color:#9a6a00;font-weight:800;font-size:.95rem;display:flex;
  align-items:center;justify-content:center;margin-bottom:14px}
.how-step h4{font-size:.98rem;font-weight:700;margin-bottom:7px}
.how-step p{font-size:.86rem;color:var(--text-secondary);line-height:1.65}

/* ── 卡片 ── */
.card{background:var(--card);border:1px solid var(--border);
  border-radius:var(--radius);box-shadow:var(--shadow);padding:24px;margin-bottom:22px}
.card-head{display:flex;align-items:center;justify-content:space-between;
  gap:12px;margin-bottom:16px;flex-wrap:wrap}
.card-head h3{font-size:1.05rem;font-weight:800}
.card-head h2{font-size:1.15rem;font-weight:800}

/* ── 统计块 ── */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:22px}
.stat{background:var(--card);border:1px solid var(--border);
  border-radius:var(--radius);box-shadow:var(--shadow);padding:18px 20px}
.stat-label{font-size:.8rem;color:var(--text-secondary);font-weight:600;
  text-transform:uppercase;letter-spacing:.4px}
.stat-value{font-size:1.7rem;font-weight:800;margin-top:5px;color:var(--primary)}
.stat-value.success{color:var(--success)}
.stat-value.warn{color:var(--warn)}
.stat-value.danger{color:var(--danger)}

/* ── 按钮 ── */
.btn{background:var(--primary);color:#fff;border:none;padding:9px 20px;
  border-radius:8px;font-size:.9rem;font-weight:700;cursor:pointer;
  font-family:inherit;transition:var(--tr);display:inline-block;line-height:1.4}
.btn:hover{background:var(--primary-hover);text-decoration:none;color:#fff}
.btn:disabled{opacity:.5;cursor:not-allowed}
.btn.ghost{background:transparent;border:1.5px solid var(--border);color:var(--text)}
.btn.ghost:hover{background:#f8f9fa;border-color:#cfd6dd;color:var(--text)}
.btn.accent{background:var(--accent);color:#3a2a00}
.btn.accent:hover{background:#f0b64a;color:#3a2a00}
.btn.danger{background:var(--danger)}
.btn.danger:hover{background:#b02a37}
.btn.sm{padding:5px 13px;font-size:.8rem}
.btn.block{display:block;width:100%;text-align:center}

/* ── 表单 ── */
label{font-size:.85rem;font-weight:600;display:block;margin-bottom:5px}
label .req{color:var(--danger);margin-left:2px}
.inp,select.inp,textarea.inp{width:100%;padding:9px 12px;
  border:1.5px solid var(--border);border-radius:8px;font-size:.92rem;
  font-family:inherit;background:#fff;transition:var(--tr);color:var(--text)}
.inp:focus,select.inp:focus,textarea.inp:focus{outline:none;
  border-color:var(--primary);box-shadow:0 0 0 3px rgba(31,78,121,.11)}
textarea.inp{min-height:62px;resize:vertical}
.form-row{margin-bottom:16px}
.hint{font-size:.79rem;color:var(--text-secondary);margin-top:5px}

/* ── 表格 ── */
.tbl-wrap{overflow-x:auto;margin:0 -24px;padding:0 24px}
table{width:100%;border-collapse:collapse;font-size:.88rem}
th{text-align:left;padding:10px 12px;background:#f8f9fb;
  border-bottom:1.5px solid var(--border);font-weight:700;
  color:var(--text-secondary);font-size:.79rem;text-transform:uppercase;
  letter-spacing:.35px;white-space:nowrap}
td{padding:11px 12px;border-bottom:1px solid #f0f2f4;vertical-align:middle}
tr:last-child td{border-bottom:none}
tbody tr:hover td{background:#fafbfc}
.right{text-align:right}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:.85rem}
.nowrap{white-space:nowrap}

/* ── 徽章 ── */
.badge{display:inline-block;padding:2px 10px;border-radius:20px;
  font-size:.75rem;font-weight:700;line-height:1.6}
.badge.ok{background:var(--success-light);color:var(--success)}
.badge.warn{background:var(--warn-light);color:var(--warn)}
.badge.err{background:var(--danger-light);color:var(--danger)}
.badge.info{background:var(--primary-light);color:var(--primary)}
.badge.gray{background:#eef0f2;color:#5b6570}

/* ── 提示条 ── */
.alert{padding:12px 16px;border-radius:9px;font-size:.89rem;margin-bottom:18px;
  border-left:4px solid;line-height:1.65}
.alert.ok{background:var(--success-light);border-color:var(--success);color:#1f5c3b}
.alert.err{background:var(--danger-light);border-color:var(--danger);color:#8a1f2b}
.alert.warn{background:var(--warn-light);border-color:var(--accent);color:#7a5a00}
.alert.info{background:var(--primary-light);border-color:var(--primary);color:#1a4262}

/* ── 结果框 ── */
pre.result{background:#f8f9fb;border:1px solid var(--border);border-radius:9px;
  padding:13px 15px;font-family:ui-monospace,Menlo,Consolas,monospace;
  font-size:.82rem;line-height:1.7;white-space:pre-wrap;word-break:break-all;
  margin:0;color:#374151}

/* ── 键值列表 ── */
.kv{display:grid;grid-template-columns:150px 1fr;gap:9px 16px;font-size:.89rem}
.kv dt{color:var(--text-secondary);font-weight:600}
.kv dd{margin:0;word-break:break-all}

/* ── 标签页 ── */
.tabs{display:flex;gap:2px;border-bottom:1.5px solid var(--border);
  margin-bottom:22px;overflow-x:auto}
.tabs a{padding:10px 17px;font-size:.88rem;font-weight:600;
  color:var(--text-secondary);border-bottom:2.5px solid transparent;
  white-space:nowrap;transition:var(--tr)}
.tabs a:hover{color:var(--primary);text-decoration:none;background:#f8f9fb}
.tabs a.active{color:var(--primary);border-bottom-color:var(--primary)}

/* ── 列表 ── */
.list{border:1px solid var(--border);border-radius:9px;overflow:hidden}
.list-item{display:block;padding:11px 15px;border-bottom:1px solid var(--border);
  font-size:.88rem;transition:var(--tr)}
.list-item:last-child{border-bottom:none}
.list-item:hover{background:var(--primary-light);text-decoration:none}

/* ── 登录页 ── */
.auth-wrap{min-height:calc(100vh - 58px);display:flex;align-items:center;
  justify-content:center;padding:40px 20px}
.auth-card{width:100%;max-width:400px;background:var(--card);
  border:1px solid var(--border);border-radius:var(--radius);
  box-shadow:var(--shadow-lg);padding:34px 32px}
.auth-card h1{font-size:1.35rem;font-weight:800;margin-bottom:6px}
.auth-card .sub{font-size:.87rem;color:var(--text-secondary);margin-bottom:24px}
.auth-foot{text-align:center;margin-top:18px;font-size:.84rem;
  color:var(--text-secondary)}
.auth-badge{display:inline-block;padding:3px 11px;border-radius:20px;
  background:var(--accent-light);color:#8a6000;font-size:.73rem;
  font-weight:700;margin-bottom:14px;letter-spacing:.3px}

/* 后台登录：深色区分 */
.admin-auth{background:#12283d}
.admin-auth .auth-card{border-top:4px solid var(--accent)}
.admin-auth .auth-card h1{color:var(--primary)}
.admin-badge{display:inline-block;padding:3px 11px;border-radius:20px;
  background:var(--primary);color:#fff;font-size:.73rem;font-weight:700;
  margin-bottom:14px;letter-spacing:.3px}

/* ── 空状态 ── */
.empty{text-align:center;padding:36px 20px;color:var(--text-secondary);font-size:.9rem}

/* ── 页脚 ── */
footer{background:var(--primary);color:rgba(255,255,255,.75);
  padding:26px 24px;text-align:center;font-size:.83rem;line-height:1.9}
footer a{color:rgba(255,255,255,.85)}
footer a:hover{color:#fff}
.footer-inner{max-width:1000px;margin:0 auto}
.footer-admin{margin-top:6px;font-size:.76rem;opacity:.6}

/* ── 原生对话框（后台用） ── */
dialog{border:none;border-radius:var(--radius);padding:0;
  box-shadow:var(--shadow-lg);max-width:440px;width:calc(100% - 40px);
  background:var(--card);color:var(--text)}
dialog::backdrop{background:rgba(15,23,42,.45)}
.dlg-head{display:flex;align-items:center;justify-content:space-between;
  padding:18px 22px;border-bottom:1px solid var(--border)}
.dlg-head h3{font-size:1rem;font-weight:800}
.dlg-body{padding:22px;max-height:70vh;overflow-y:auto}
.dlg-close{background:none;border:none;font-size:1.3rem;cursor:pointer;
  color:var(--text-secondary);line-height:1;padding:0 4px}
.dlg-close:hover{color:var(--text)}
.check-row{display:flex;align-items:flex-start;gap:9px;padding:7px 0;
  font-size:.88rem;cursor:pointer}
.check-row input{width:auto;margin:3px 0 0;accent-color:var(--primary);
  cursor:pointer;flex-shrink:0}
.check-row code{font-size:.75rem;color:var(--text-secondary);
  font-family:ui-monospace,Menlo,monospace}

/* ── 响应式 ── */
@media(max-width:820px){
  .stats{grid-template-columns:repeat(2,1fr)}
  .how{grid-template-columns:repeat(2,1fr)}
  .hero{padding:48px 20px 54px}
  .hero h1{font-size:1.6rem}
  .kv{grid-template-columns:1fr;gap:3px 0}
  .kv dt{margin-top:8px}
}
@media(max-width:560px){
  .topbar{height:auto;flex-wrap:wrap;padding:10px 14px;gap:8px}
  .topbar-links{flex:1;justify-content:flex-end;row-gap:4px;column-gap:4px}
  .topbar-user{max-width:130px}
  .stats{grid-template-columns:1fr 1fr;gap:10px}
  .how{grid-template-columns:1fr}
  .container{padding:18px 14px 44px}
  .card{padding:18px}
  .tbl-wrap{margin:0 -18px;padding:0 18px}
  .auth-card{padding:26px 22px}
  .inp,select.inp,textarea.inp{font-size:1rem}
}