/* ===================== 基础 ===================== */
* { box-sizing: border-box; }

:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --bg: #f1f5f9;
  --card: #ffffff;
  --text: #0f172a;
  --muted: #64748b;
  --border: #e2e8f0;
  --danger: #dc2626;
  --danger-dark: #b91c1c;
  --ok: #16a34a;
  --radius: 14px;
  --shadow: 0 1px 3px rgba(15, 23, 42, .08), 0 4px 16px rgba(15, 23, 42, .06);
}

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3 { margin: 0 0 .5rem; line-height: 1.3; }
h2 { font-size: 1.15rem; }
h3 { font-size: .95rem; color: var(--muted); font-weight: 600; text-transform: none; }

.container { max-width: 900px; margin: 0 auto; padding: 24px 16px 60px; }

/* ===================== 首页 Hero ===================== */
.hero {
  background: linear-gradient(135deg, #2563eb 0%, #1e40af 100%);
  color: #fff;
  padding: 42px 16px 34px;
  text-align: center;
}
.hero-inner { max-width: 720px; margin: 0 auto; }
.hero h1 { font-size: 1.6rem; margin-bottom: .5rem; }
.hero p { margin: 0; opacity: .92; font-size: .98rem; }
.hero b { font-weight: 700; }

/* ===================== 应用卡片 ===================== */
.apps { display: grid; gap: 16px; margin-top: 24px; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px;
}
.card-head { display: flex; align-items: center; gap: 14px; }
.app-icon {
  width: 56px;
  height: 56px;
  border-radius: 12px;
  object-fit: cover;
  flex-shrink: 0;
  background: #fff;
  box-shadow: 0 1px 3px rgba(0, 0, 0, .12);
}
.app-title { min-width: 0; }
.app-title h2 { margin: 0 0 2px; }
.meta { margin: 0; color: var(--muted); font-size: .86rem; }
.desc { margin: 12px 0 0; color: var(--text); font-size: .92rem; white-space: pre-line; }

.actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 14px; }

.btn-install {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--primary);
  color: #fff !important;
  font-weight: 600;
  padding: 10px 18px;
  border-radius: 999px;
  border: none;
  cursor: pointer;
  font-size: .95rem;
  transition: background .15s, transform .05s;
}
.btn-install:hover { background: var(--primary-dark); text-decoration: none; }
.btn-install:active { transform: scale(.98); }

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: #fff;
  color: var(--primary);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 9px 16px;
  cursor: pointer;
  font-size: .92rem;
  transition: background .15s, border-color .15s;
}
.btn-ghost:hover { background: #f8fafc; border-color: #cbd5e1; text-decoration: none; }

.qr { margin-top: 14px; text-align: center; }
.qr svg { width: 190px; height: 190px; border: 1px solid var(--border); border-radius: 12px; background: #fff; }
.hint { margin: 6px 0 0; color: var(--muted); font-size: .85rem; }

/* ===================== 空状态 / 安装说明 ===================== */
.empty {
  text-align: center;
  padding: 60px 20px;
  color: var(--muted);
  background: var(--card);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  margin-top: 24px;
}
.guide {
  margin-top: 28px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 22px;
}
.guide ol { margin: 8px 0 0; padding-left: 20px; }
.guide li { margin-bottom: 6px; font-size: .92rem; }

footer {
  text-align: center;
  padding: 18px 16px 40px;
  color: var(--muted);
  font-size: .86rem;
}

/* ===================== Flash 提示 ===================== */
.flash {
  padding: 10px 14px;
  border-radius: 10px;
  font-size: .9rem;
  margin-bottom: 10px;
}
.flash.ok { background: #dcfce7; color: #166534; }
.flash.err { background: #fee2e2; color: #991b1b; }
.flash-area { margin-bottom: 16px; }
.flash-area .flash:last-child { margin-bottom: 0; }
.center { text-align: center; }

/* ===================== 后台 ===================== */
.admin-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  max-width: 900px;
  margin: 0 auto;
  padding: 24px 16px 0;
}
.admin-top h1 { font-size: 1.35rem; margin: 0; }

.panel {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
  margin-top: 20px;
}
.panel h2 { margin-bottom: 14px; }
.app-item { scroll-margin-top: 12px; }

.app-head { display: flex; align-items: center; gap: 14px; margin-bottom: 6px; }
.app-head .app-icon { width: 48px; height: 48px; }
.app-head h2 { margin: 0; }

/* ===================== 表单 ===================== */
.form { display: flex; flex-direction: column; gap: 14px; margin-top: 6px; }
.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.grid label { display: flex; flex-direction: column; gap: 6px; font-size: .88rem; color: var(--muted); }
.grid .full { grid-column: 1 / -1; }
.form label { font-size: .88rem; color: var(--muted); }
.form label.check {
  flex-direction: row;
  align-items: center;
  gap: 8px;
  color: var(--text);
  font-size: .9rem;
}
input[type="text"], input[type="password"], input[type="number"], textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: .95rem;
  font-family: inherit;
  color: var(--text);
  background: #fff;
}
input[type="file"] { font-size: .88rem; color: var(--muted); }
textarea { resize: vertical; }
input:focus, textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, .12);
}

/* ===================== 按钮 ===================== */
.btn {
  display: inline-block;
  border: 1px solid var(--border);
  background: #fff;
  color: var(--text);
  padding: 8px 16px;
  border-radius: 10px;
  font-size: .9rem;
  cursor: pointer;
  transition: background .15s, border-color .15s;
}
.btn:hover { background: #f8fafc; text-decoration: none; }
.btn.primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn.primary:hover { background: var(--primary-dark); }
.btn.danger { background: #fff; border-color: #fecaca; color: var(--danger); }
.btn.danger:hover { background: #fef2f2; border-color: #fca5a5; }
.btn.sm { padding: 4px 10px; font-size: .82rem; border-radius: 8px; }

.danger-zone { margin-top: 16px; padding-top: 14px; border-top: 1px dashed var(--border); }

/* ===================== 版本表格 ===================== */
table { width: 100%; border-collapse: collapse; font-size: .88rem; margin: 8px 0 4px; }
th, td { text-align: left; padding: 8px 8px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 600; white-space: nowrap; }
td.nowrap { white-space: nowrap; }
.ops { display: flex; gap: 8px; flex-wrap: wrap; }
.ops form { display: inline; }
.tag-ok { color: var(--ok); font-weight: 600; }
.tag-dim { color: var(--muted); }

details { margin-top: 16px; }
summary {
  cursor: pointer;
  color: var(--primary);
  font-size: .92rem;
  font-weight: 600;
  margin-bottom: 10px;
}
summary:hover { text-decoration: underline; }
details .form { padding: 14px; background: #f8fafc; border: 1px dashed var(--border); border-radius: 10px; }

/* ===================== 登录页 ===================== */
.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}
.login {
  width: 100%;
  max-width: 360px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.login h1 { text-align: center; font-size: 1.2rem; }
.login label { display: flex; flex-direction: column; gap: 6px; font-size: .88rem; color: var(--muted); }
.login button {
  background: var(--primary);
  border: none;
  color: #fff;
  padding: 11px;
  border-radius: 10px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
}
.login button:hover { background: var(--primary-dark); }

/* ===================== 移动端 ===================== */
@media (max-width: 600px) {
  .grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 1.3rem; }
  .card { padding: 15px; }
  .btn-install { width: 100%; justify-content: center; }
  .btn-ghost { flex: 1; justify-content: center; }
}