/* ===================== 主题变量 ===================== */
:root {
  --bg: #f5f7f6;
  --bg-soft: #eef2f0;
  --card: #ffffff;
  --text: #2b3138;
  --muted: #767f89;
  --border: #dfe5e2;
  --primary: #22ac38;        /* 原站链接绿 */
  --primary-2: #1a8a2c;
  --primary-soft: #e9f6eb;
  --accent: #0269ac;         /* 原站数据蓝 */
  --highlight: #ea5f00;      /* 原站强调橙 */
  --slate: #636a77;          /* 原站标题栏深板岩灰 */
  --green: #1a8a2c;
  --red: #d93025;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow-sm: 0 1px 2px rgba(16,24,40,.05);
  --shadow: 0 6px 24px rgba(16,24,40,.07);
  --shadow-lg: 0 16px 48px rgba(16,24,40,.12);
  --grad: linear-gradient(135deg, #26b33c 0%, #1a8a2c 100%);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1512;
    --bg-soft: #16201a;
    --card: #161d19;
    --text: #e6ece8;
    --muted: #9aa8a0;
    --border: #243029;
    --primary: #3fb950;
    --primary-2: #2ea043;
    --primary-soft: #16241a;
    --accent: #4aa3d8;
    --highlight: #f0883e;
    --slate: #9aa6b2;
    --shadow: 0 6px 24px rgba(0,0,0,.4);
    --shadow-lg: 0 16px 48px rgba(0,0,0,.5);
    --grad: linear-gradient(135deg, #2ea043 0%, #238636 100%);
  }
}

* { box-sizing: border-box; }
/* hidden 属性优先于任何 display 覆盖（如 #singleFields 的 grid），避免切换批量时单条框残留 */
[hidden] { display: none !important; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.65;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--primary); text-decoration: none; transition: color .15s; }
a:hover { color: var(--primary-2); text-decoration: none; }
.container { max-width: 1120px; margin: 0 auto; padding: 0 20px; }
.muted { color: var(--muted); }

/* ===================== 头部导航 ===================== */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--card) 82%, transparent);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--border);
}
.header-inner { display: flex; align-items: center; gap: 18px; height: 64px; }
.brand {
  font-weight: 800; font-size: 19px; letter-spacing: -.3px;
  color: var(--primary);
  white-space: nowrap;
}
.main-nav { display: flex; gap: 2px; flex: 1; }
.main-nav a {
  padding: 7px 14px; border-radius: 999px; color: var(--text);
  font-size: 14px; font-weight: 500;
}
.main-nav a:hover { background: var(--primary-soft); color: var(--primary); }
.main-nav a.active { background: var(--grad); color: #fff; }
.header-right { display: flex; align-items: center; gap: 10px; }
.quota-badge {
  font-size: 12.5px; color: var(--muted); background: var(--bg-soft);
  padding: 5px 12px; border-radius: 999px; border: 1px solid var(--border);
}
.quota-badge b { color: var(--primary); font-weight: 700; }
.myip-badge {
  font-size: 12.5px; color: var(--muted); background: var(--bg-soft);
  padding: 5px 12px; border-radius: 999px; border: 1px solid var(--border); white-space: nowrap;
}
.myip-badge b { color: var(--primary); font-weight: 700; }
a.myip-badge:hover { color: var(--slate); border-color: color-mix(in srgb, var(--primary) 40%, var(--border)); }
.user-chip {
  font-size: 13.5px; font-weight: 600; background: var(--primary-soft);
  color: var(--primary); padding: 5px 12px; border-radius: 999px;
}
.inline { display: inline; }
.nav-toggle {
  display: none; background: var(--bg-soft); border: 1px solid var(--border);
  border-radius: 10px; font-size: 18px; color: var(--text); cursor: pointer; padding: 3px 10px;
}

/* ===================== 按钮 ===================== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  background: var(--grad); color: #fff; border: none; padding: 10px 22px;
  border-radius: 12px; cursor: pointer; font-size: 14px; font-weight: 600;
  box-shadow: 0 4px 14px color-mix(in srgb, var(--primary) 40%, transparent);
  transition: transform .12s, box-shadow .12s, opacity .12s;
}
.btn:hover { transform: translateY(-1px); box-shadow: 0 8px 22px color-mix(in srgb, var(--primary) 45%, transparent); color: #fff; }
.btn:active { transform: translateY(0); }
.btn:disabled { opacity: .55; cursor: not-allowed; transform: none; }
.btn-sm { padding: 6px 14px; font-size: 13px; border-radius: 10px; }
.btn-ghost {
  background: var(--card); color: var(--text); border: 1px solid var(--border); box-shadow: none;
}
.btn-ghost:hover { background: var(--bg-soft); box-shadow: none; }
.btn-link { background: none; border: none; color: var(--primary); cursor: pointer; font-size: 14px; padding: 0; }

/* ===================== Hero ===================== */
.hero {
  position: relative; overflow: hidden; text-align: center;
  padding: 80px 24px 60px; border-radius: 28px; margin: 24px 0 8px;
  background:
    radial-gradient(920px 420px at 50% -14%, color-mix(in srgb, var(--primary) 20%, transparent), transparent 68%),
    radial-gradient(680px 340px at 96% -6%, color-mix(in srgb, var(--accent) 12%, transparent), transparent 62%),
    var(--card);
  border: 1px solid var(--border); box-shadow: var(--shadow-lg);
}
.hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none; opacity: .45;
  background-image: radial-gradient(circle at 1px 1px, color-mix(in srgb, var(--slate) 14%, transparent) 1px, transparent 0);
  background-size: 24px 24px;
  -webkit-mask-image: linear-gradient(to bottom, rgba(0,0,0,.4), transparent 55%);
  mask-image: linear-gradient(to bottom, rgba(0,0,0,.4), transparent 55%);
}
.hero-inner { position: relative; max-width: 720px; margin: 0 auto; }
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 7px; margin-bottom: 24px;
  font-size: 12.5px; font-weight: 600; letter-spacing: .2px; color: var(--primary-2);
  background: var(--primary-soft); border: 1px solid color-mix(in srgb, var(--primary) 26%, transparent);
  padding: 6px 15px; border-radius: 999px;
}
.hero h1 {
  font-size: 46px; line-height: 1.15; margin: 0 0 18px;
  letter-spacing: -1.5px; font-weight: 800; color: var(--slate);
}
.grad-text {
  background: var(--grad); -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}
.hero .lead { color: var(--muted); margin: 0 auto 34px; max-width: 600px; font-size: 16px; line-height: 1.75; }
.quick-search {
  display: flex; align-items: center; gap: 10px; max-width: 600px; margin: 0 auto;
  padding: 6px 6px 6px 20px; background: var(--card);
  border: 1.5px solid var(--border); border-radius: 999px; box-shadow: var(--shadow);
  transition: border-color .18s, box-shadow .18s;
}
.quick-search:focus-within { border-color: var(--primary); box-shadow: 0 0 0 5px var(--primary-soft), var(--shadow); }
.qs-icon { color: var(--muted); font-size: 15px; display: inline-flex; flex: none; }
.quick-search input {
  flex: 1; min-width: 0; padding: 13px 4px; border: none; background: transparent;
  color: var(--text); font-size: 15.5px; outline: none;
}
.quick-search .btn { flex: none; padding: 13px 28px; border-radius: 999px; }
.hero-quick { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin-top: 28px; }
.hero-quick a {
  font-size: 13px; font-weight: 500; color: var(--slate);
  background: color-mix(in srgb, var(--card) 72%, var(--bg-soft));
  border: 1px solid var(--border); padding: 8px 16px; border-radius: 999px;
  transition: color .15s, border-color .15s, background .15s, transform .15s;
}
.hero-quick a:hover {
  color: var(--primary); background: var(--primary-soft); transform: translateY(-1px);
  border-color: color-mix(in srgb, var(--primary) 40%, var(--border));
}
.hero-note { margin: 30px 0 0; font-size: 12.5px; color: var(--muted); letter-spacing: .2px; }

/* ===================== 分类与卡片网格 ===================== */
.cat-block { margin: 34px 0; }
.cat-title {
  display: flex; align-items: center; gap: 8px;
  font-size: 19px; margin: 0 0 16px; font-weight: 700; letter-spacing: -.3px;
}
.cat-title .cat-emoji { font-size: 20px; }
.card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 16px; }
.tool-card {
  display: flex; align-items: flex-start; gap: 14px;
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 18px; box-shadow: var(--shadow-sm);
  transition: transform .16s, box-shadow .16s, border-color .16s;
  position: relative; overflow: hidden;
}
.tool-card::before {
  content: ""; position: absolute; inset: 0 auto 0 0; width: 4px;
  background: var(--grad); opacity: 0; transition: opacity .16s;
}
.tool-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); border-color: color-mix(in srgb, var(--primary) 35%, var(--border)); }
.tool-card:hover::before { opacity: 1; }
.tool-card .tool-icon {
  flex: none; width: 44px; height: 44px; border-radius: 12px;
  display: grid; place-items: center; font-size: 22px; background: var(--primary-soft);
}
.tool-card .tool-text { display: flex; flex-direction: column; gap: 4px; min-width: 0; }
.tool-name { font-weight: 650; color: var(--text); font-size: 15px; }
.tool-desc { font-size: 13px; color: var(--muted); line-height: 1.5; }

/* ===================== 工具页 ===================== */
.tool-page { padding: 32px 0; }
.tool-head { display: flex; align-items: center; gap: 14px; margin-bottom: 4px; }
.tool-head .tool-icon {
  flex: none; width: 52px; height: 52px; border-radius: 14px;
  display: grid; place-items: center; font-size: 26px; background: var(--primary-soft);
}
.tool-head h1 { font-size: 26px; margin: 0; letter-spacing: -.4px; font-weight: 750; }
.tool-head p { margin: 2px 0 0; }
/* 结果区置于表单下方（上下堆叠，结果占满宽） */
.tool-body { display: grid; grid-template-columns: 1fr; gap: 22px; margin-top: 24px; }
.tool-form, .tool-result {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 24px; box-shadow: var(--shadow);
}
.tool-result { min-height: 160px; }
/* 多字段表单在宽屏下横向排列，textarea 独占整行 */
#singleFields { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 0 18px; align-items: end; }
.field-wide { grid-column: 1 / -1; }
.field { margin-bottom: 16px; }
.field > label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 7px; font-weight: 600; }
.field input[type=text], .field input[type=number], .field textarea, .field select {
  width: 100%; padding: 11px 13px; border: 1.5px solid var(--border); border-radius: var(--radius-sm);
  background: var(--bg-soft); color: var(--text); font-size: 14px; font-family: inherit; outline: none;
  transition: border-color .15s, box-shadow .15s;
}
.field input:focus, .field textarea:focus, .field select:focus {
  border-color: var(--primary); box-shadow: 0 0 0 4px var(--primary-soft); background: var(--card);
}
.field textarea { resize: vertical; min-height: 90px; }
label.checkbox {
  display: inline-flex; align-items: center; gap: 7px; font-size: 14px; color: var(--text);
  background: var(--bg-soft); border: 1px solid var(--border); border-radius: 999px; padding: 6px 14px; cursor: pointer;
  margin: 0 8px 8px 0; font-weight: 500;
}
label.checkbox input { accent-color: var(--primary); }
.mode-switch {
  display: inline-flex; gap: 4px; margin-bottom: 18px; background: var(--bg-soft);
  padding: 4px; border-radius: 999px; border: 1px solid var(--border);
}
.mode-switch label {
  padding: 6px 18px; border-radius: 999px; font-size: 13.5px; font-weight: 600; cursor: pointer; color: var(--muted);
}
.mode-switch input { display: none; }
.mode-switch label:has(input:checked) { background: var(--card); color: var(--primary); box-shadow: var(--shadow-sm); }
.form-actions { display: flex; gap: 10px; margin-top: 10px; align-items: center; }
.form-hint { font-size: 12px; color: var(--muted); margin-left: 2px; }
.card-actions { margin-left: auto; display: inline-flex; align-items: center; }
.btn-sm { padding: 6px 14px; font-size: 12.5px; border-radius: 8px; }

/* ===================== 结果区 ===================== */
.result-card h3 { margin: 0 0 14px; font-size: 16px; font-weight: 700; display: flex; align-items: center; gap: 8px; }
.result-card h4 { margin: 16px 0 8px; font-size: 14px; color: var(--muted); }
dl.kv { margin: 0; display: grid; grid-template-columns: max-content 1fr; gap: 12px 20px; align-items: baseline; }
dl.kv dt { color: var(--muted); font-size: 13px; font-weight: 600; white-space: nowrap; }
dl.kv dd { margin: 0; word-break: break-all; font-size: 14px; line-height: 1.6; }
.result-error { color: var(--red); font-weight: 600; }
.result-ok { color: var(--green); }
.placeholder { text-align: center; padding: 48px 0; color: var(--muted); }
/* 批量结果表：现代简洁风（仅横向分隔线 + 表头绿色强调线 + 淡斑马纹 + 悬停高亮）；
   使用真实 <table>，选中复制粘贴到 Excel 时列不错位 */
.result-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.result-table th, .result-table td {
  padding: 10px 14px; text-align: left; word-break: break-all;
  border-bottom: 1px solid var(--border);
  transition: background-color .15s ease;
}
.result-table thead th {
  background: var(--card); color: var(--slate); font-weight: 650; font-size: 12.5px;
  border-bottom: 2px solid var(--primary);
}
.result-table tbody tr:nth-child(even) td { background: #f7faf8; }
.result-table tbody tr:hover td { background: var(--primary-soft); }
.result-table tbody tr:last-child td { border-bottom: none; }
.table-scroll { overflow-x: auto; }
.copy-area {
  width: 100%; font-family: "SF Mono", Consolas, monospace; font-size: 12px;
  padding: 8px 10px; border: 1px solid var(--border); border-radius: var(--radius-sm); background: var(--bg-soft);
}
.items-list { display: flex; flex-direction: column; gap: 8px; }
.items-list code {
  background: var(--bg-soft); padding: 8px 12px; border-radius: 8px; word-break: break-all;
  font-family: "SF Mono", Consolas, monospace; font-size: 13px; border: 1px solid var(--border);
}
.qr-img { max-width: 240px; border: 1px solid var(--border); border-radius: 12px; padding: 8px; background: #fff; }
pre.raw {
  background: var(--bg-soft); padding: 14px; border-radius: var(--radius-sm); overflow: auto;
  max-height: 340px; font-size: 12px; border: 1px solid var(--border);
}
.loading { color: var(--muted); text-align: center; padding: 40px 0; }

/* ===================== 登录 / 错误页 ===================== */
.auth-page, .error-page { padding: 60px 0; text-align: center; }
.error-page h1 {
  font-size: 80px; margin: 0; font-weight: 800; line-height: 1;
  color: var(--primary);
}
.error-page .lead { font-size: 18px; margin: 12px 0 24px; }
.notice {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 24px; max-width: 600px; margin: 24px auto; text-align: left; box-shadow: var(--shadow);
}
.provider-list { display: flex; gap: 12px; justify-content: center; margin: 24px 0; flex-wrap: wrap; }

/* ===================== 页脚 ===================== */
.site-footer {
  border-top: 1px solid var(--border); background: var(--card);
  padding: 28px 0; margin-top: 48px; text-align: center; font-size: 13px; color: var(--muted);
}
.site-footer a { color: var(--muted); }
.site-footer a:hover { color: var(--primary); }
.footer-icp { margin: 6px 0; font-size: 12.5px; }
.footer-icp a { color: var(--muted); }
.footer-icp a:hover { color: var(--primary); }

/* ===================== 登录遮罩 ===================== */
.login-mask {
  position: fixed; inset: 0; background: rgba(10,14,26,.55); backdrop-filter: blur(4px);
  display: flex; align-items: center; justify-content: center; z-index: 100; padding: 20px;
}
.login-mask[hidden] { display: none; }   /* 修复：确保 hidden 生效 */
.login-dialog {
  background: var(--card); border-radius: 20px; padding: 32px; max-width: 380px; width: 100%;
  text-align: center; box-shadow: var(--shadow-lg); border: 1px solid var(--border);
}
.login-dialog h3 { margin: 0 0 8px; font-size: 20px; }
.login-dialog p { color: var(--muted); margin: 0 0 8px; }
.login-actions { display: flex; gap: 10px; justify-content: center; margin-top: 20px; }

/* ===================== 响应式 ===================== */
@media (max-width: 820px) {
  .tool-body { grid-template-columns: 1fr; }
  .hero { padding: 54px 18px 42px; }
  .hero h1 { font-size: 32px; letter-spacing: -1px; }
  .hero .lead { font-size: 15px; margin-bottom: 28px; }
}
@media (max-width: 768px) {
  .main-nav {
    display: none; position: absolute; top: 64px; left: 0; right: 0;
    background: var(--card); flex-direction: column; padding: 12px; gap: 4px;
    border-bottom: 1px solid var(--border); box-shadow: var(--shadow);
  }
  .main-nav.open { display: flex; }
  .main-nav a { padding: 10px 14px; }
  .nav-toggle { display: block; }
  .quota-badge { display: none; }
  .myip-badge { display: none; }
  .hero h1 { font-size: 27px; }
  .quick-search { padding-left: 16px; }
  .quick-search .btn { padding: 11px 20px; }
}