/**
 * 易云多站点AI工具平台
 * themes/default/style.css — 默认模板样式（蓝白风格）
 * 主色用 CSS 变量 var(--primary)，由 header.php 按站点配置注入
 */

:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-light: #eff6ff;
  --bg: #f6f8fc;
  --card: #ffffff;
  --text: #1e293b;
  --text-sub: #64748b;
  --border: #e2e8f0;
  --radius: 14px;
  --shadow: 0 1px 3px rgba(15, 23, 42, .06), 0 8px 24px rgba(15, 23, 42, .06);
  --shadow-hover: 0 4px 12px rgba(37, 99, 235, .12), 0 12px 32px rgba(15, 23, 42, .10);
  /* v3 扩展变量（aurora/carbon 主题按需覆盖） */
  --grad-2: #7c3aed;          /* 渐变第二色 */
  --surface: #ffffff;         /* 内嵌白底（输入框/结果块） */
  --surface-2: #f8fafc;       /* 次级面（表格 hover） */
  --nav-bg: rgba(255, 255, 255, .92);
  --footer-bg: #0f172a;
  --footer-text: #94a3b8;
  --footer-link: #cbd5e1;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.container { max-width: 1120px; margin: 0 auto; padding: 0 20px; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; }

/* ========== 顶部导航 ========== */
.navbar {
  position: sticky; top: 0; z-index: 100;
  background: var(--nav-bg);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.navbar-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 18px; }
.brand-logo {
  width: 34px; height: 34px; border-radius: 9px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff; display: inline-flex; align-items: center; justify-content: center; font-size: 17px;
}
.nav-links { display: flex; align-items: center; gap: 26px; font-size: 15px; }
.nav-links a { color: var(--text-sub); transition: color .2s; }
.nav-links a:hover { color: var(--primary); }
.nav-cta {
  background: var(--primary); color: #fff !important;
  padding: 8px 18px; border-radius: 10px; font-weight: 500;
  transition: background .2s, transform .2s;
}
.nav-cta:hover { background: var(--primary-dark); transform: translateY(-1px); }

/* 汉堡按钮（手机） */
.hamburger { display: none; flex-direction: column; gap: 5px; background: none; border: 0; cursor: pointer; padding: 8px; }
.hamburger span { width: 22px; height: 2px; background: var(--text); border-radius: 2px; transition: .2s; }

/* 手机抽屉：280px 宽，右侧滑入，带遮罩与关闭按钮，不全屏 */
.drawer {
  position: fixed; top: 0; right: 0; z-index: 300;
  width: 280px; max-width: 85vw; height: 100vh; height: 100dvh;
  background: var(--card); box-shadow: -8px 0 32px rgba(15, 23, 42, .12);
  transform: translateX(105%); transition: transform .28s ease;
  display: flex; flex-direction: column;
}
.drawer.open { transform: translateX(0); }
.drawer-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 20px; border-bottom: 1px solid var(--border); font-weight: 700;
}
.drawer-close { background: none; border: 0; font-size: 20px; cursor: pointer; color: var(--text-sub); padding: 4px 8px; }
.drawer-links { display: flex; flex-direction: column; padding: 12px; overflow-y: auto; }
.drawer-links a { padding: 13px 14px; border-radius: 10px; font-size: 15px; color: var(--text); transition: background .15s; }
.drawer-links a:hover { background: var(--primary-light); }
.drawer-links .di { display: inline-block; width: 24px; }
.drawer-cta { background: var(--primary); color: #fff !important; text-align: center; font-weight: 600; margin-top: 10px; }
.drawer-mask {
  position: fixed; inset: 0; z-index: 200;
  background: rgba(15, 23, 42, .45); opacity: 0; pointer-events: none; transition: opacity .25s;
}
.drawer-mask.show { opacity: 1; pointer-events: auto; }

/* ========== Hero 区 ========== */
.hero {
  background:
    radial-gradient(1000px 400px at 20% -10%, color-mix(in srgb, var(--primary) 14%, transparent), transparent),
    linear-gradient(180deg, var(--primary-light), var(--bg));
  padding: 72px 0 56px;
  text-align: center;
}
.hero h1 {
  font-size: clamp(28px, 5vw, 44px); font-weight: 800;
  letter-spacing: -1px; line-height: 1.25;
}
.hero h1 .grad {
  background: linear-gradient(120deg, var(--primary), #7c3aed);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero p { margin-top: 14px; color: var(--text-sub); font-size: clamp(15px, 2.2vw, 18px); }
.hero-search { margin: 28px auto 0; max-width: 520px; position: relative; }
.hero-search input {
  width: 100%; height: 52px; padding: 0 56px 0 20px;
  border: 2px solid var(--border); border-radius: 14px; font-size: 15px; outline: none;
  background: var(--surface); transition: border .2s, box-shadow .2s;
}
.hero-search input:focus { border-color: var(--primary); box-shadow: 0 0 0 4px color-mix(in srgb, var(--primary) 15%, transparent); }
.hero-search .btn-go {
  position: absolute; right: 6px; top: 6px; height: 40px; padding: 0 18px;
  border: 0; border-radius: 10px; background: var(--primary); color: #fff; cursor: pointer; font-size: 14px;
}
.hero-search .btn-go:hover { background: var(--primary-dark); }

/* ========== 工具卡片（电脑每行4个，手机每行2个） ========== */
.section { padding: 48px 0 20px; }
.section-head { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 22px; }
.section-head h2 { font-size: 24px; font-weight: 700; }
.section-head .sub { color: var(--text-sub); font-size: 14px; }

.tools-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.tool-card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 24px 20px; box-shadow: var(--shadow);
  transition: transform .25s, box-shadow .25s, border-color .25s;
  display: flex; flex-direction: column; gap: 10px;
}
.tool-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-color: color-mix(in srgb, var(--primary) 35%, var(--border)); }
.tool-icon {
  width: 46px; height: 46px; border-radius: 12px; font-size: 22px;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--primary-light); color: var(--primary);
}
.tool-card h3 { font-size: 16px; font-weight: 600; }
.tool-card p { font-size: 13px; color: var(--text-sub); flex: 1; }
.tool-meta { display: flex; align-items: center; justify-content: space-between; margin-top: 4px; }
.tool-free { font-size: 12px; color: #059669; background: #ecfdf5; padding: 2px 10px; border-radius: 999px; font-weight: 600; }
.tool-points { font-size: 12px; color: var(--primary); background: var(--primary-light); padding: 2px 10px; border-radius: 999px; font-weight: 600; }
.tool-go { font-size: 13px; color: var(--primary); font-weight: 600; }

/* 分类徽标 */
.tool-cat { font-size: 12px; color: var(--text-sub); }

/* ========== 数据信任区 ========== */
.trust { padding: 40px 0 64px; }
.trust-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.trust-item { text-align: center; padding: 26px 10px; background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); }
.trust-item b { display: block; font-size: 26px; color: var(--primary); }
.trust-item span { font-size: 13px; color: var(--text-sub); }

/* ========== 工具页表单（电脑最大宽 680px 居中） ========== */
.tool-wrap { max-width: 680px; margin: 32px auto 56px; padding: 0 16px; }
.tool-head { text-align: center; margin-bottom: 26px; }
.tool-head .icon-big { font-size: 40px; }
.tool-head h1 { font-size: 26px; margin-top: 8px; }
.tool-head p { color: var(--text-sub); margin-top: 6px; font-size: 14px; }
.tool-panel {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 28px; box-shadow: var(--shadow);
}

/* 表单组件统一 */
.field { margin-bottom: 18px; }
.field label { display: block; font-size: 14px; font-weight: 600; margin-bottom: 7px; }
.field .tip { font-size: 12px; color: var(--text-sub); margin-top: 5px; }
.input, .textarea, .select {
  width: 100%; border: 1.5px solid var(--border); border-radius: 10px;
  padding: 11px 14px; font-size: 14px; font-family: inherit; outline: none;
  background: var(--surface); color: var(--text); transition: border .2s, box-shadow .2s;
}
.input:focus, .textarea:focus, .select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 14%, transparent);
}
.textarea { min-height: 120px; resize: vertical; line-height: 1.7; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border: 0; cursor: pointer; font-size: 15px; font-weight: 600; font-family: inherit;
  border-radius: 10px; padding: 12px 26px;
  background: var(--primary); color: #fff;
  transition: background .2s, transform .15s, box-shadow .2s;
}
.btn:hover { background: var(--primary-dark); }
.btn:active { transform: scale(.98); }
.btn:disabled { opacity: .55; cursor: not-allowed; }
.btn-block { width: 100%; }
.btn-lg { padding: 14px 30px; font-size: 16px; }
.btn-outline { background: var(--surface); color: var(--primary); border: 1.5px solid var(--primary); }
.btn-outline:hover { background: var(--primary-light); }
.btn-sm { padding: 7px 14px; font-size: 13px; border-radius: 8px; }
.btn-danger { background: #dc2626; }
.btn-danger:hover { background: #b91c1c; }

/* 进度条 */
.progress { height: 10px; background: var(--border); border-radius: 999px; overflow: hidden; margin: 10px 0; }
.progress-bar { height: 100%; width: 0; background: linear-gradient(90deg, var(--primary), #60a5fa); border-radius: 999px; transition: width .3s; }

/* 结果区 */
.result {
  margin-top: 20px; padding: 20px; border-radius: 12px;
  background: #f0fdf4; border: 1px solid #bbf7d0; display: none;
}
.result.show { display: block; }
.result.err { background: #fef2f2; border-color: #fecaca; }
.result h4 { margin-bottom: 10px; font-size: 15px; }
.result-content {
  white-space: pre-wrap; background: var(--surface); border: 1px solid var(--border);
  border-radius: 10px; padding: 16px; font-size: 14px; line-height: 1.8; max-height: 420px; overflow: auto;
}
.download-list { display: flex; flex-direction: column; gap: 10px; }
.download-item {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 12px 16px; font-size: 14px;
}
.download-item .fn { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* 上传区域 */
.upload-zone {
  border: 2px dashed var(--border); border-radius: 12px; padding: 34px 20px;
  text-align: center; cursor: pointer; transition: border .2s, background .2s;
}
.upload-zone:hover, .upload-zone.dragover { border-color: var(--primary); background: var(--primary-light); }
.upload-zone .uz-icon { font-size: 36px; }
.upload-zone .uz-main { font-weight: 600; margin-top: 8px; }
.upload-zone .uz-sub { font-size: 12px; color: var(--text-sub); margin-top: 4px; }

/* 文件列表 */
.file-list { margin-top: 14px; display: flex; flex-direction: column; gap: 8px; }
.file-item {
  display: flex; align-items: center; gap: 10px; padding: 10px 14px;
  background: var(--surface); border: 1px solid var(--border); border-radius: 10px; font-size: 14px;
}
.file-item .fi-name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.file-item .fi-size { color: var(--text-sub); font-size: 12px; }
.file-item .fi-ops { display: flex; gap: 4px; }
.icon-btn {
  border: 1px solid var(--border); background: var(--surface); border-radius: 7px;
  width: 28px; height: 28px; cursor: pointer; font-size: 13px; color: var(--text-sub);
  display: inline-flex; align-items: center; justify-content: center; transition: all .15s;
}
.icon-btn:hover { border-color: var(--primary); color: var(--primary); }

/* 提示条 */
.alert { padding: 12px 16px; border-radius: 10px; font-size: 14px; margin-bottom: 16px; }
.alert-warn { background: #fffbeb; border: 1px solid #fde68a; color: #92400e; }
.alert-info { background: var(--primary-light); border: 1px solid color-mix(in srgb, var(--primary) 30%, #fff); color: var(--primary-dark); }

/* 广告位 */
.ad-slot {
  margin: 26px auto; max-width: 680px; text-align: center;
  border: 1px dashed var(--border); border-radius: 12px; padding: 18px;
  color: var(--text-sub); font-size: 13px; background: var(--surface);
}

/* ========== 登录/注册卡片 ========== */
.auth-wrap { max-width: 420px; margin: 48px auto 64px; padding: 0 16px; }
.auth-card { background: var(--card); border: 1px solid var(--border); border-radius: 18px; padding: 34px 30px; box-shadow: var(--shadow); }
.auth-card h1 { font-size: 22px; text-align: center; margin-bottom: 6px; }
.auth-card .auth-sub { text-align: center; color: var(--text-sub); font-size: 13px; margin-bottom: 24px; }
.auth-foot { text-align: center; margin-top: 18px; font-size: 14px; color: var(--text-sub); }
.auth-foot a { color: var(--primary); font-weight: 600; }
.auth-logo { display: flex; justify-content: center; margin-bottom: 14px; }
.auth-logo .brand-logo { width: 46px; height: 46px; font-size: 22px; border-radius: 12px; }

/* ========== 个人中心 ========== */
.user-grid { display: grid; grid-template-columns: 250px 1fr; gap: 20px; align-items: start; margin: 28px auto 56px; }
.user-side { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 22px 18px; box-shadow: var(--shadow); }
.user-ava { width: 56px; height: 56px; border-radius: 50%; background: linear-gradient(135deg, var(--primary), #7c3aed); color: #fff; display: flex; align-items: center; justify-content: center; font-size: 24px; font-weight: 700; margin-bottom: 12px; }
.user-side .un { font-weight: 700; font-size: 16px; }
.user-side .ue { color: var(--text-sub); font-size: 12px; margin-bottom: 16px; word-break: break-all; }
.user-nav { display: flex; flex-direction: column; gap: 4px; }
.user-nav a { padding: 10px 12px; border-radius: 9px; font-size: 14px; color: var(--text-sub); }
.user-nav a.on, .user-nav a:hover { background: var(--primary-light); color: var(--primary); font-weight: 600; }
.user-main { display: flex; flex-direction: column; gap: 20px; }
.stat-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.stat-card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow); }
.stat-card b { font-size: 24px; color: var(--primary); display: block; }
.stat-card span { font-size: 13px; color: var(--text-sub); }
.panel { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 22px; box-shadow: var(--shadow); }
.panel h3 { font-size: 16px; margin-bottom: 14px; }

/* 数据表格 */
.table { width: 100%; border-collapse: collapse; font-size: 14px; }
.table th { text-align: left; padding: 10px 12px; color: var(--text-sub); font-weight: 600; border-bottom: 1px solid var(--border); white-space: nowrap; }
.table td { padding: 11px 12px; border-bottom: 1px solid var(--border); }
.table tr:last-child td { border-bottom: 0; }
.table tr:hover td { background: var(--surface-2); }
.badge { display: inline-block; padding: 2px 10px; border-radius: 999px; font-size: 12px; font-weight: 600; }
.badge-ok { background: #ecfdf5; color: #059669; }
.badge-off { background: #fef2f2; color: #dc2626; }
.badge-mute { background: #f1f5f9; color: #64748b; }

/* 分页 */
.pager { display: flex; gap: 6px; justify-content: center; margin-top: 18px; flex-wrap: wrap; }
.pager a, .pager span { padding: 7px 13px; border-radius: 8px; border: 1px solid var(--border); background: var(--surface); font-size: 13px; }
.pager .on { background: var(--primary); color: #fff; border-color: var(--primary); }

/* ========== Footer ========== */
.footer { background: var(--footer-bg); color: var(--footer-text); margin-top: 40px; padding: 44px 0 30px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: 36px; }
.footer-brand { color: #fff; font-size: 18px; font-weight: 700; margin-bottom: 10px; }
.footer-desc { font-size: 13px; line-height: 1.8; }
.footer-links { margin-top: 14px; display: flex; gap: 18px; font-size: 13px; }
.footer-links a { color: var(--footer-link); }
.footer-links a:hover { color: #fff; }
.footer-right { text-align: right; }
.footer-contact p { font-size: 13px; margin-bottom: 8px; }
.footer-contact a { color: var(--footer-text); }
.copyright { border-top: 1px solid rgba(255,255,255,.08); margin-top: 30px; padding-top: 18px; text-align: center; font-size: 12px; }

/* 404 */
.nf { text-align: center; padding: 90px 16px; }
.nf b { font-size: 76px; display: block; color: var(--primary); }
.nf p { color: var(--text-sub); margin: 12px 0 24px; }

/* ========== 单选按钮组 ========== */
.radio-row { display: flex; gap: 10px; flex-wrap: wrap; }
.radio-row label {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 9px 14px; border: 1.5px solid var(--border); border-radius: 10px;
  background: var(--surface); font-size: 14px; font-weight: 400; cursor: pointer;
  transition: border .2s, background .2s; touch-action: manipulation;
}
.radio-row label:has(input:checked) { border-color: var(--primary); background: var(--primary-light); color: var(--primary-dark); font-weight: 600; }
.radio-row input { accent-color: var(--primary); }

/* ========== 响应式 ========== */
@media (max-width: 860px) {
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .container { padding: 0 14px; }
  .tools-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .tool-card { padding: 18px 14px; }
  .trust-grid { grid-template-columns: repeat(2, 1fr); }
  .hero { padding: 48px 0 40px; }
  .footer-grid { grid-template-columns: 1fr; gap: 20px; }
  .footer-right { text-align: left; }
  .user-grid { grid-template-columns: 1fr; }
  .stat-cards { grid-template-columns: repeat(3, 1fr); }
  .tool-panel { padding: 20px 16px; }
  /* 数据表格在面板内横向滚动 */
  .panel { overflow-x: auto; -webkit-overflow-scrolling: touch; }
}
@media (max-width: 480px) {
  body { font-size: 14px; }
  /* 顶栏紧凑化 */
  .navbar { height: 56px; }
  .navbar-inner { height: 56px; }
  .brand { font-size: 16px; gap: 8px; }
  .brand-logo { width: 30px; height: 30px; font-size: 15px; border-radius: 8px; }
  /* Hero 紧凑化，输入16px防iOS聚焦缩放 */
  .hero { padding: 38px 0 30px; }
  .hero-search input { height: 46px; font-size: 16px; }
  .hero-search .btn-go { height: 36px; }
  .section { padding: 34px 0 14px; }
  .section-head { margin-bottom: 16px; }
  .section-head h2 { font-size: 20px; }
  /* 工具卡片：2列保持，内容紧凑 */
  .tools-grid { gap: 10px; }
  .tool-card { padding: 15px 12px; gap: 7px; }
  .tool-card h3 { font-size: 14px; }
  .tool-card p { font-size: 12px; }
  .tool-icon { width: 38px; height: 38px; font-size: 19px; border-radius: 10px; }
  .tool-meta { flex-wrap: wrap; gap: 6px; }
  .tool-go { display: none; } /* 手机上整卡可点，省略右侧文字 */
  /* 信任区紧凑 */
  .trust-grid { gap: 10px; }
  .trust-item { padding: 16px 8px; }
  .trust-item b { font-size: 20px; }
  /* 触控目标 ≥ 44px */
  .btn { min-height: 46px; }
  .btn-lg { min-height: 50px; }
  .btn-sm { min-height: 36px; }
  .icon-btn { width: 34px; height: 34px; font-size: 14px; }
  .input, .textarea, .select { font-size: 16px; padding: 11px 13px; }
  .textarea { min-height: 110px; }
  /* 表单面板 */
  .tool-wrap { margin: 20px auto 40px; padding: 0 12px; }
  .tool-head h1 { font-size: 22px; }
  .tool-panel { padding: 18px 14px; }
  .field { margin-bottom: 15px; }
  /* 上传区 */
  .upload-zone { padding: 26px 14px; }
  .upload-zone .uz-icon { font-size: 30px; }
  /* 结果与下载项换行 */
  .download-item { flex-wrap: wrap; }
  .result-content { max-height: 320px; }
  /* 抽屉底部安全区（全面屏手势条） */
  .drawer { padding-bottom: env(safe-area-inset-bottom); }
  .drawer-links a { padding: 14px; } /* 菜单项加大触控 */
  /* 用户中心 */
  .stat-cards { gap: 10px; }
  .stat-card { padding: 14px 12px; }
  .stat-card b { font-size: 20px; }
  .user-side { padding: 18px 14px; }
  /* 数据表格紧凑（配合横向滚动） */
  .table { font-size: 13px; }
  .table th, .table td { padding: 9px 10px; }
  /* 登录注册卡 */
  .auth-wrap { margin: 26px auto 44px; }
  .auth-card { padding: 26px 20px; }
  /* 充值套餐 */
  .pay-btn { min-height: 40px; }
  /* 底部 */
  .footer { padding: 32px 0 24px; margin-top: 28px; }
  .footer-links { flex-wrap: wrap; gap: 12px; }
  .nf { padding: 60px 16px; }
  .nf b { font-size: 60px; }
}
@media (max-width: 360px) {
  .tools-grid { gap: 8px; }
  .tool-card { padding: 13px 10px; }
  .tool-card p { font-size: 11px; }
  .stat-cards { grid-template-columns: repeat(2, 1fr); }
  .trust-grid { gap: 8px; }
  .section-head h2 { font-size: 18px; }
}


/* ================= v3 科技感增强（stellar/aurora/carbon 共用结构） ================= */

/* --- Hero：渐变光斑 + 网格纹理背景 --- */
.hero { position: relative; overflow: hidden; }
.hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(color-mix(in srgb, var(--primary) 7%, transparent) 1px, transparent 1px),
    linear-gradient(90deg, color-mix(in srgb, var(--primary) 7%, transparent) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, #000 35%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, #000 35%, transparent 75%);
}
.hero .orb {
  position: absolute; border-radius: 50%; filter: blur(70px); opacity: .5; pointer-events: none;
  animation: orbFloat 14s ease-in-out infinite alternate;
}
.hero .orb.o1 { width: 340px; height: 340px; left: -110px; top: -120px;
  background: radial-gradient(circle, color-mix(in srgb, var(--primary) 55%, transparent), transparent 70%); }
.hero .orb.o2 { width: 300px; height: 300px; right: -90px; top: 30px;
  background: radial-gradient(circle, color-mix(in srgb, var(--grad-2) 45%, transparent), transparent 70%);
  animation-delay: -7s; }
@keyframes orbFloat {
  from { transform: translateY(0) scale(1); }
  to   { transform: translateY(46px) scale(1.12); }
}
.hero > .container { position: relative; z-index: 1; }

/* --- AI 搜索框（联想 + 快捷自助） --- */
.hero-search .btn-go { display: inline-flex; align-items: center; gap: 6px; font-weight: 600; }
.ai-suggest {
  position: absolute; left: 0; right: 0; top: calc(100% + 8px); z-index: 30;
  background: var(--card); border: 1px solid var(--border); border-radius: 12px;
  box-shadow: var(--shadow-hover); overflow: hidden; display: none; text-align: left;
}
.ai-suggest.show { display: block; }
.ai-suggest .sg-item { display: flex; align-items: center; gap: 10px; padding: 11px 16px; font-size: 14px; cursor: pointer; }
.ai-suggest .sg-item:hover, .ai-suggest .sg-item.act { background: var(--primary-light); color: var(--primary); }
.ai-suggest .sg-item .sg-ico { width: 22px; text-align: center; }
.ai-suggest .sg-item .sg-type { margin-left: auto; font-size: 11px; color: var(--text-sub); }
.ai-chips { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; margin-top: 14px; }
.ai-chips a {
  padding: 7px 14px; border-radius: 999px; font-size: 13px;
  background: color-mix(in srgb, var(--card) 80%, transparent);
  border: 1px solid var(--border); color: var(--text-sub);
  transition: all .2s; backdrop-filter: blur(4px);
}
.ai-chips a:hover { border-color: var(--primary); color: var(--primary); transform: translateY(-1px); }

/* --- 工具分类 Tab --- */
.cat-tabs { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 20px; }
.cat-tabs a {
  padding: 8px 18px; border-radius: 999px; font-size: 14px; font-weight: 500;
  border: 1.5px solid var(--border); color: var(--text-sub); background: var(--card); transition: all .2s;
}
.cat-tabs a:hover { border-color: var(--primary); color: var(--primary); }
.cat-tabs a.on { background: var(--primary); border-color: var(--primary); color: #fff; }

/* --- 卡片悬浮光效 --- */
.tool-card { position: relative; overflow: hidden; }
.tool-card::after {
  content: ""; position: absolute; inset: -1px; border-radius: var(--radius); pointer-events: none;
  background: linear-gradient(130deg, color-mix(in srgb, var(--primary) 28%, transparent), transparent 38%, transparent 62%, color-mix(in srgb, var(--grad-2) 22%, transparent));
  opacity: 0; transition: opacity .25s;
}
.tool-card:hover::after { opacity: 1; }
.tool-card > * { position: relative; z-index: 1; }

/* --- 滚动显现动效（footer.php IntersectionObserver 加 .in） --- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; transition: none; } .hero .orb { animation: none; } }

/* --- 拼接段（三段式长页） --- */
.band { position: relative; }
.band-alt { background: linear-gradient(180deg, color-mix(in srgb, var(--primary) 4%, var(--bg)), var(--bg)); }

/* --- 平台介绍 / 特性 --- */
.feat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.feat-card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 26px 22px; box-shadow: var(--shadow); }
.feat-card .fi { font-size: 28px; }
.feat-card h3 { font-size: 17px; margin: 10px 0 8px; }
.feat-card p { font-size: 13.5px; color: var(--text-sub); line-height: 1.8; }

/* --- 友情链接 --- */
.links-row { display: flex; flex-wrap: wrap; gap: 10px; }
.links-row a {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 8px 16px; border-radius: 10px; font-size: 13.5px;
  background: var(--card); border: 1px solid var(--border); color: var(--text-sub); transition: all .2s;
}
.links-row a:hover { color: var(--primary); border-color: var(--primary); transform: translateY(-2px); }
.links-row a .lk { color: var(--primary); font-size: 12px; }

/* --- Footer 多列菜单 --- */
.footer-grid-v3 { display: grid; grid-template-columns: 1.6fr repeat(3, 1fr); gap: 36px; }
.footer-col h4 { color: #fff; font-size: 15px; margin-bottom: 14px; }
.footer-col a { display: block; color: var(--footer-link); font-size: 13.5px; padding: 5px 0; transition: color .2s, padding-left .2s; }
.footer-col a:hover { color: #fff; padding-left: 4px; }
.footer-stats { display: flex; gap: 26px; margin-top: 16px; }
.footer-stats b { color: #fff; font-size: 20px; display: block; }
.footer-stats span { font-size: 12px; }

/* --- 滚动条 --- */
::-webkit-scrollbar { width: 9px; height: 9px; }
::-webkit-scrollbar-thumb { background: color-mix(in srgb, var(--primary) 45%, transparent); border-radius: 99px; }
::-webkit-scrollbar-track { background: transparent; }

/* --- 响应式补遗 --- */
@media (max-width: 860px) {
  .feat-grid { grid-template-columns: 1fr; }
  .footer-grid-v3 { grid-template-columns: repeat(2, 1fr); gap: 22px; }
}
@media (max-width: 480px) {
  .footer-grid-v3 { grid-template-columns: repeat(2, 1fr); gap: 18px; }
  .ai-chips a { padding: 6px 12px; font-size: 12px; }
  .cat-tabs a { padding: 7px 14px; font-size: 13px; }
  .footer-stats { gap: 16px; }
}

/* ========== v3.1 首页 AI 意图自助选项 ========== */
.ai-intents {
  display: flex; justify-content: center; width: max-content;
  margin: 30px auto 14px; padding: 4px;
  background: color-mix(in srgb, var(--card) 72%, transparent);
  border: 1px solid var(--border); border-radius: 999px;
  backdrop-filter: blur(6px);
}
.ai-intents button {
  border: 0; background: transparent; cursor: pointer;
  padding: 8px 20px; border-radius: 999px; font-size: 13.5px;
  color: var(--text-sub); transition: background .2s, color .2s;
}
.ai-intents button:hover { color: var(--primary); }
.ai-intents button.on { background: var(--primary); color: #fff; font-weight: 600; box-shadow: 0 4px 14px color-mix(in srgb, var(--primary) 35%, transparent); }