/* ============================================================
   音创云图统一身份认证系统 —— 样式表
   设计原则：方形为主（无圆角）、企业蓝/青配色、无紫色、无表情符号
   ============================================================ */
:root {
  --blue:    #1565c0;
  --blue-d:  #0d3c78;
  --teal:    #00796b;
  --teal-d:  #004d40;
  --ink:     #1f2a37;
  --muted:   #5b6878;
  --line:    #d7dee7;
  --bg:      #eef1f5;
  --card:    #ffffff;
  --ok:      #1b7f4b;
  --no:      #b3261e;
  --wait:    #9a6b00;
  --shadow:  0 1px 3px rgba(16,32,56,.08), 0 4px 16px rgba(16,32,56,.06);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: "Microsoft YaHei", "PingFang SC", "Segoe UI", system-ui, sans-serif;
  color: var(--ink);
  background: var(--bg);
  font-size: 15px;
  line-height: 1.6;
  min-height: 100vh;
  padding-bottom: 64px;
}
a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }

/* 方形基调：整体去除圆角 */
.topbar, .card, .btn, input, select, textarea, .tag, .tab, .thumb, .stat, .footer-inner { border-radius: 0; }

/* ---------- 顶部导航 ---------- */
.topbar {
  background: var(--blue-d);
  border-bottom: 3px solid var(--teal);
  position: sticky; top: 0; z-index: 60;
}
.topbar-inner {
  max-width: 1160px; margin: 0 auto; padding: 0 20px;
  height: 60px; display: flex; align-items: center; justify-content: space-between;
}
.brand { display: flex; align-items: center; gap: 12px; color: #fff; }
.brand:hover { text-decoration: none; }
.brand-mark {
  width: 36px; height: 36px; background: var(--teal); color: #fff;
  display: grid; place-items: center; font-weight: 700; letter-spacing: 1px;
  border: 1px solid rgba(255,255,255,.4);
}
.brand-text { font-size: 17px; font-weight: 600; letter-spacing: .5px; }
.topnav { display: flex; align-items: center; gap: 6px; }
.topnav a {
  color: #dce6f2; padding: 8px 14px; font-size: 14px; border: 1px solid transparent;
}
.topnav a:hover { color: #fff; background: rgba(255,255,255,.08); text-decoration: none; }
.topnav a.nav-reg { background: var(--teal); color: #fff; }
.topnav a.nav-reg:hover { background: var(--teal-d); }
.topnav a.nav-out { color: #ffd9d6; }

/* ---------- 内容容器 ---------- */
.content { max-width: 1160px; margin: 0 auto; padding: 28px 20px 40px; }

/* ---------- 卡片 ---------- */
.card {
  background: var(--card); border: 1px solid var(--line);
  box-shadow: var(--shadow); padding: 24px; margin-bottom: 22px;
}
.card h2 { margin: 0 0 4px; font-size: 19px; }
.card h3 { margin: 0 0 14px; font-size: 16px; color: var(--blue-d); }
.card .sub { color: var(--muted); font-size: 13px; margin-bottom: 18px; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-block; padding: 11px 22px; font-size: 15px; cursor: pointer;
  border: 1px solid var(--blue); background: var(--blue); color: #fff;
  font-weight: 600; transition: background .15s, border-color .15s;
}
.btn:hover { background: var(--blue-d); border-color: var(--blue-d); text-decoration: none; }
.btn.teal { background: var(--teal); border-color: var(--teal); }
.btn.teal:hover { background: var(--teal-d); border-color: var(--teal-d); }
.btn.ghost { background: #fff; color: var(--blue); }
.btn.ghost:hover { background: #f0f5fb; }
.btn.danger { background: var(--no); border-color: var(--no); }
.btn.danger:hover { background: #8c1d17; }
.btn.sm { padding: 7px 14px; font-size: 13px; }
.btn.block { display: block; width: 100%; text-align: center; }
.btn:disabled { background: #b7c0cc; border-color: #b7c0cc; cursor: not-allowed; }

/* ---------- 表单 ---------- */
.form-row { margin-bottom: 18px; }
.form-row label { display: block; font-weight: 600; margin-bottom: 7px; }
.form-row .hint { color: var(--muted); font-size: 12px; margin-top: 5px; }
input[type=text], input[type=email], input[type=password], input[type=url], select, textarea {
  width: 100%; padding: 11px 12px; border: 1px solid var(--line);
  background: #fbfcfe; font-size: 14px; color: var(--ink); font-family: inherit;
}
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--blue); background: #fff; }
textarea { min-height: 96px; resize: vertical; }
.radio-group { display: flex; gap: 18px; }
.radio-group label { font-weight: 400; display: flex; align-items: center; gap: 6px; cursor: pointer; }

/* ---------- 状态标签 ---------- */
.tag { display: inline-block; padding: 3px 10px; font-size: 12px; font-weight: 600; border: 1px solid; }
.tag.ok   { color: var(--ok);   border-color: var(--ok);   background: #eaf6ef; }
.tag.no   { color: var(--no);   border-color: var(--no);   background: #fdecea; }
.tag.wait { color: var(--wait); border-color: var(--wait); background: #fdf6e6; }

/* ---------- 网格 ---------- */
.grid { display: grid; gap: 18px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 820px) { .grid-2, .grid-3 { grid-template-columns: 1fr; } }

/* ---------- 认证/应用区块卡片 ---------- */
.block-card { border: 1px solid var(--line); background: #fff; box-shadow: var(--shadow); }
.block-card .bh {
  background: #f4f7fb; border-bottom: 1px solid var(--line); padding: 14px 18px;
  display: flex; align-items: center; justify-content: space-between;
}
.block-card .bh h3 { margin: 0; }
.block-card .bb { padding: 18px; }
.block-card .split { border-top: 2px dashed var(--line); margin-top: 6px; padding-top: 14px; }

/* ---------- 缩略图/图片 ---------- */
.thumb { width: 100%; border: 1px solid var(--line); background: #f3f6fa; display: block; }
.thumb-wrap { border: 1px solid var(--line); padding: 6px; background: #fff; }
.img-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.img-grid .cap { font-size: 12px; color: var(--muted); margin-top: 4px; }

/* ---------- 表格 ---------- */
.table { width: 100%; border-collapse: collapse; background: #fff; font-size: 14px; }
.table th, .table td { border: 1px solid var(--line); padding: 10px 12px; text-align: left; vertical-align: middle; }
.table th { background: #f4f7fb; font-weight: 600; color: var(--blue-d); }
.table tr:nth-child(even) td { background: #fafcfe; }
.table .ops { white-space: nowrap; }

/* ---------- 数据条 ---------- */
.stat { border: 1px solid var(--line); background: #fff; padding: 16px; box-shadow: var(--shadow); }
.stat .num { font-size: 26px; font-weight: 700; color: var(--blue); }
.stat .lab { color: var(--muted); font-size: 13px; }

/* ---------- 提示 ---------- */
.alert { padding: 12px 16px; border: 1px solid; margin-bottom: 18px; font-size: 14px; }
.alert.info { background: #eef5fc; border-color: #b9d6f2; color: #0d3c78; }
.alert.ok   { background: #eaf6ef; border-color: #b6e0c6; color: #1b7f4b; }
.alert.err  { background: #fdecea; border-color: #f3bcb8; color: #b3261e; }

/* ---------- 首页 Hero ---------- */
.hero { background: linear-gradient(135deg, var(--blue-d), var(--blue)); color: #fff; border: 1px solid var(--blue-d); padding: 46px 38px; box-shadow: var(--shadow); }
.hero h1 { margin: 0 0 12px; font-size: 30px; letter-spacing: 1px; }
.hero p { margin: 0 0 22px; color: #d8e6f5; max-width: 720px; }
.hero .actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero .btn.teal { background: #00796b; border-color: #00796b; color: #fff; }
.hero .btn.ghost { background: transparent; color: #fff; border: 1px solid rgba(255,255,255,.65); }
.hero .btn.ghost:hover { background: rgba(255,255,255,.14); }

.feature { border-top: 3px solid var(--teal); }
.feature .ico { width: 42px; height: 42px; background: #eaf3fb; color: var(--blue); display: grid; place-items: center; font-weight: 700; margin-bottom: 12px; border: 1px solid var(--line); }
.feature h3 { margin: 0 0 8px; font-size: 16px; }
.feature p { margin: 0; color: var(--muted); font-size: 13px; }

/* ---------- 文档代码块 ---------- */
.code-block {
  background: #0f1722; color: #d6e2f0; padding: 16px; overflow: auto;
  font-family: "Consolas", "Courier New", monospace; font-size: 13px; line-height: 1.55;
  border: 1px solid #1d2c3d; white-space: pre; margin: 10px 0 18px;
}
.doc-section { margin-bottom: 22px; }
.doc-section h3 { border-left: 4px solid var(--teal); padding-left: 10px; margin: 0 0 10px; }

/* ---------- 底部版权（固定） ---------- */
.site-footer {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 50;
  background: var(--blue-d); border-top: 3px solid var(--teal);
}
.footer-inner { max-width: 1280px; margin: 0 auto; padding: 12px 20px; }
.copyright { margin: 0; color: #cfe0f0; font-size: 12.5px; line-height: 1.5; text-align: center; letter-spacing: .3px; }

/* ---------- 杂项 ---------- */
.muted { color: var(--muted); }
.right { text-align: right; }
.center { text-align: center; }
.mt { margin-top: 16px; }
.mb { margin-bottom: 16px; }
.divider { height: 1px; background: var(--line); margin: 20px 0; }
.empty { text-align: center; color: var(--muted); padding: 40px 0; border: 1px dashed var(--line); }
.file-link { display: inline-flex; align-items: center; gap: 6px; }