/* ═══════════════════════════════════════════════════════════════
   优品优语 Kuku Design System — 仿 kuku.baidu.com 界面风格
   参考元素：左侧窄导航、卡片式内容区、对话式工作台、浅色蓝主色、
             圆角卡片+极浅阴影、右上角登录按钮、清爽克制专业
   品牌保持：优品优语 · 健康从业者的AI销售工作台 · 金苹果在银网子里
   生效层级：本文件在 common.css / 页面内联样式之后加载，覆盖生效
   作用域说明：首页专属样式以 body.kk-home 为前缀，避免与
             invite/methodology 等二级页的自有 .hero 冲突
   ═══════════════════════════════════════════════════════════════ */

/* ─── 0. 设计令牌（覆盖全局变量，保持品牌色系） ─── */
:root{
  /* 主色：百度系蓝（kuku风格），保留青绿作点缀 */
  --kk-primary:#4e6ef2;
  --kk-primary-light:#6b85f5;
  --kk-primary-lighter:#eef1fe;
  --kk-primary-dark:#3a57e8;
  --kk-accent:#00c6a7;
  --kk-accent-light:#20d3b4;
  --kk-accent-lighter:#e6faf6;
  --kk-gold:#f7b500;
  --kk-gold-lighter:#fff8e6;

  /* 背景层级 */
  --kk-bg:#f7f8fa;
  --kk-bg-card:#ffffff;
  --kk-bg-hover:#f2f3f5;
  --kk-bg-input:#f7f8fa;

  /* 文字层级 */
  --kk-text:#1f2329;
  --kk-text2:#4e5969;
  --kk-text3:#86909c;
  --kk-text4:#c9cdd4;

  /* 边框 */
  --kk-border:#e5e6eb;
  --kk-border-light:#f0f1f3;

  /* 状态 */
  --kk-success:#00b42a;
  --kk-success-bg:#e8ffea;
  --kk-warning:#ff7d00;
  --kk-warning-bg:#fff3e8;
  --kk-danger:#f53f3f;
  --kk-danger-bg:#ffece8;

  /* 圆角（kuku：8-12px，克制） */
  --kk-radius-sm:6px;
  --kk-radius:10px;
  --kk-radius-lg:14px;

  /* 阴影（kuku：极浅） */
  --kk-shadow-xs:0 1px 2px rgba(31,35,41,.04);
  --kk-shadow-sm:0 1px 2px rgba(31,35,41,.04),0 2px 6px rgba(31,35,41,.04);
  --kk-shadow:0 2px 8px rgba(31,35,41,.06);
  --kk-shadow-lg:0 8px 24px rgba(31,35,41,.08);

  /* 尺寸 */
  --kk-nav-h:56px;
  --kk-sidebar-w:220px;

    /* 变量映射：覆盖 common.css / 工具页内联变量（!important 保证与加载顺序无关，始终生效） */
  --primary:var(--kk-primary) !important;
  --primary-light:var(--kk-primary-light) !important;
  --primary-lighter:var(--kk-primary-lighter) !important;
  --primary-dark:var(--kk-primary-dark) !important;
  --accent:var(--kk-accent) !important;
  --bg:var(--kk-bg) !important;
  --bg-alt:var(--kk-bg) !important;
  --bg-card:var(--kk-bg-card) !important;
  --bg-hover:var(--kk-bg-hover) !important;
  --bg-input:var(--kk-bg-input) !important;
  --text:var(--kk-text) !important;
  --text2:var(--kk-text2) !important;
  --text3:var(--kk-text3) !important;
  --text4:var(--kk-text4) !important;
  --border:var(--kk-border) !important;
  --border-light:var(--kk-border-light) !important;
  --border-focus:var(--kk-primary) !important;
  --success:var(--kk-success) !important;
  --warning:var(--kk-warning) !important;
  --danger:var(--kk-danger) !important;
  --radius-sm:var(--kk-radius-sm) !important;
  --radius:var(--kk-radius) !important;
  --radius-lg:var(--kk-radius-lg) !important;
  --shadow-xs:var(--kk-shadow-xs) !important;
  --shadow-sm:var(--kk-shadow-sm) !important;
  --shadow:var(--kk-shadow) !important;
  --shadow-md:var(--kk-shadow) !important;
  --shadow-lg:var(--kk-shadow-lg) !important;
  --shadow-primary:0 4px 12px rgba(78,110,242,.25) !important;
}

/* ─── 1. 基础 ─── */
html,body{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC','Microsoft YaHei',sans-serif;
  background:var(--kk-bg);
  color:var(--kk-text);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{text-decoration:none;color:inherit}
a:hover{color:var(--kk-primary)}

/* ═══════════════════════════════════════════════════════════════
   第二部分：首页（营销首页 · kuku风格）
   仅作用于 body.kk-home，避免影响二级页面
   ═══════════════════════════════════════════════════════════════ */

/* ─── 2. 顶部窄导航（kuku：白底、细边框、logo+导航+登录） ─── */
body.kk-home nav{
  position:fixed;top:0;left:0;right:0;z-index:100;
  padding:0 24px;
  display:flex;justify-content:space-between;align-items:center;
  height:var(--kk-nav-h);
  background:rgba(255,255,255,.96);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--kk-border);
}
body.kk-home .nav-logo{
  display:flex;align-items:center;gap:8px;
  font-size:17px;font-weight:700;color:var(--kk-text);
}
body.kk-home .nav-logo span{
  background:linear-gradient(120deg,var(--kk-primary),var(--kk-accent));
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;
}
body.kk-home .nav-links{display:flex;align-items:center;gap:6px;list-style:none;margin:0;padding:0}
body.kk-home .nav-links li{margin:0}
body.kk-home .nav-links a{
  display:block;padding:8px 14px;font-size:14px;color:var(--kk-text2);
  border-radius:8px;transition:all .2s;
}
body.kk-home .nav-links a:hover{background:var(--kk-bg-hover);color:var(--kk-primary)}
body.kk-home .nav-user-area,body.kk-home .nav-user-info{display:flex;align-items:center;gap:10px}
body.kk-home .nav-login-btn{
  background:none;border:1px solid var(--kk-border);color:var(--kk-text2);
  padding:6px 18px;border-radius:8px;font-size:14px;cursor:pointer;transition:all .2s;
}
body.kk-home .nav-login-btn:hover{border-color:var(--kk-primary);color:var(--kk-primary);background:var(--kk-primary-lighter)}
body.kk-home .nav-register-btn{
  background:var(--kk-primary);border:none;color:#fff;
  padding:6px 18px;border-radius:8px;font-size:14px;font-weight:500;cursor:pointer;transition:all .2s;
  box-shadow:0 2px 8px rgba(78,110,242,.28);
}
body.kk-home .nav-register-btn:hover{background:var(--kk-primary-dark)}
body.kk-home .nav-user-avatar{
  width:32px;height:32px;border-radius:50%;background:linear-gradient(135deg,var(--kk-primary),var(--kk-accent));
  color:#fff;display:flex;align-items:center;justify-content:center;font-weight:600;font-size:14px;flex-shrink:0;
}
body.kk-home .nav-user-text{line-height:1.3}
body.kk-home .nav-user-name{font-size:13px;font-weight:600;color:var(--kk-text)}
body.kk-home .nav-user-trial{font-size:11px;color:var(--kk-text3)}
body.kk-home .nav-user-menu{
  position:absolute;right:0;top:44px;background:#fff;border:1px solid var(--kk-border);
  border-radius:10px;box-shadow:var(--kk-shadow-lg);padding:6px;min-width:140px;z-index:110;display:none;
}
body.kk-home .nav-user-info:hover .nav-user-menu{display:block}
body.kk-home .nav-user-menu .menu-item{
  display:block;padding:9px 14px;border-radius:8px;font-size:13px;color:var(--kk-text2);cursor:pointer;transition:all .15s;
}
body.kk-home .nav-user-menu .menu-item:hover{background:var(--kk-bg-hover);color:var(--kk-primary)}
body.kk-home .kk-menu-btn{
  display:none;background:none;border:none;font-size:22px;color:var(--kk-text2);
  cursor:pointer;padding:4px 8px;border-radius:8px;line-height:1;
}
body.kk-home .kk-menu-btn:hover{background:var(--kk-bg-hover)}

/* ─── 3. Hero 对话式工作台（kuku 核心交互） ─── */
body.kk-home .hero{
  margin-top:var(--kk-nav-h);
  padding:64px 24px 56px;
  text-align:center;
  background:
    radial-gradient(1200px 500px at 20% -10%,rgba(78,110,242,.08),transparent 60%),
    radial-gradient(1000px 460px at 85% 0%,rgba(0,198,167,.07),transparent 60%),
    linear-gradient(180deg,#fafbfe 0%,#f7f8fa 100%);
}
body.kk-home .hero-badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 16px;border-radius:20px;font-size:13px;color:var(--kk-primary);
  background:var(--kk-primary-lighter);border:1px solid rgba(78,110,242,.16);
  margin-bottom:20px;font-weight:500;
}
body.kk-home .hero h1{
  font-size:44px;line-height:1.25;font-weight:800;color:var(--kk-text);margin-bottom:16px;letter-spacing:-.5px;
}
body.kk-home .hero h1 span{
  background:linear-gradient(120deg,var(--kk-primary),var(--kk-accent));
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;
}
body.kk-home .subtitle{font-size:15px;line-height:1.9;color:var(--kk-text3);max-width:680px;margin:0 auto 32px}
body.kk-home .search-box{
  position:relative;max-width:640px;margin:0 auto 18px;
  display:flex;align-items:center;
  background:#fff;border:1px solid var(--kk-border);border-radius:12px;
  padding:4px 6px 4px 18px;box-shadow:var(--kk-shadow-sm);
  transition:all .2s;
}
body.kk-home .search-box:focus-within{border-color:var(--kk-primary);box-shadow:0 0 0 3px rgba(78,110,242,.12)}
body.kk-home .search-icon{font-size:16px;margin-right:10px;color:var(--kk-text3)}
body.kk-home .search-box input{
  flex:1;border:none;outline:none;font-size:15px;color:var(--kk-text);
  background:transparent;height:44px;min-width:0;
}
body.kk-home .search-box input::placeholder{color:var(--kk-text4)}
body.kk-home .kk-send-btn{
  background:var(--kk-primary);color:#fff;border:none;border-radius:9px;
  height:40px;padding:0 22px;font-size:14px;font-weight:500;cursor:pointer;transition:all .2s;
  flex-shrink:0;
}
body.kk-home .kk-send-btn:hover{background:var(--kk-primary-dark)}
body.kk-home .kk-wb-chips{
  display:flex;justify-content:center;flex-wrap:wrap;gap:10px;margin:6px auto 26px;max-width:680px;
}
body.kk-home .kk-wb-chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:7px 16px;border-radius:20px;font-size:13px;color:var(--kk-text2);
  background:#fff;border:1px solid var(--kk-border);cursor:pointer;transition:all .2s;
}
body.kk-home .kk-wb-chip:hover{border-color:var(--kk-primary);color:var(--kk-primary);background:var(--kk-primary-lighter)}
body.kk-home .stats-bar{display:flex;justify-content:center;gap:48px;margin-top:8px}
body.kk-home .stats-bar .stat{text-align:center}
body.kk-home .stats-bar .num{font-size:28px;font-weight:800;color:var(--kk-text)}
body.kk-home .stats-bar .label{font-size:13px;color:var(--kk-text3);margin-top:2px}
body.kk-home .method-entry{
  display:flex;align-items:center;gap:14px;max-width:560px;margin:28px auto 0;
  background:#fff;border:1px solid var(--kk-border);border-radius:12px;padding:14px 18px;
  box-shadow:var(--kk-shadow-xs);transition:all .2s;text-align:left;
}
body.kk-home .method-entry:hover{border-color:var(--kk-primary);box-shadow:var(--kk-shadow);transform:translateY(-2px)}
body.kk-home .me-icon{width:42px;height:42px;border-radius:10px;background:var(--kk-primary-lighter);display:flex;align-items:center;justify-content:center;font-size:20px;flex-shrink:0}
body.kk-home .me-info{flex:1;min-width:0}
body.kk-home .me-title{font-size:14px;font-weight:600;color:var(--kk-text)}
body.kk-home .me-desc{font-size:12px;color:var(--kk-text3);margin-top:2px}
body.kk-home .me-btn{font-size:13px;color:var(--kk-primary);font-weight:500;flex-shrink:0}

/* ─── 4. 区块标题 ─── */
body.kk-home .core-tools,body.kk-home .core-systems,body.kk-home .hot-section,body.kk-home .section{margin:0 auto;max-width:1200px;padding:48px 24px 8px}
body.kk-home .core-tools-header,body.kk-home .core-systems-header{display:flex;align-items:center;gap:12px;margin-bottom:24px}
body.kk-home .core-tools-header h2,body.kk-home .core-systems-header h2{font-size:24px;font-weight:800;color:var(--kk-text);margin:0}
body.kk-home .ct-badge,body.kk-home .cs-badge{
  padding:3px 12px;border-radius:14px;font-size:12px;font-weight:600;
  background:var(--kk-primary-lighter);color:var(--kk-primary);
}
body.kk-home .cs-icon{font-size:22px}
body.kk-home .cs-desc{font-size:13px;color:var(--kk-text3);margin-left:4px}

/* 三大核心模块卡片 */
body.kk-home .ct-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:16px}
body.kk-home .ct-card{
  position:relative;display:block;background:#fff;border:1px solid var(--kk-border);
  border-radius:12px;padding:24px;transition:all .22s;overflow:hidden;
}
body.kk-home .ct-card:hover{border-color:rgba(78,110,242,.35);box-shadow:var(--kk-shadow-lg);transform:translateY(-3px)}
body.kk-home .ct-icon{width:48px;height:48px;border-radius:12px;background:var(--kk-primary-lighter);display:flex;align-items:center;justify-content:center;font-size:24px;margin-bottom:14px}
body.kk-home .ct-card h3{font-size:17px;font-weight:700;color:var(--kk-text);margin-bottom:8px}
body.kk-home .ct-card p{font-size:13px;line-height:1.8;color:var(--kk-text3);margin-bottom:14px}
body.kk-home .ct-meta,body.kk-home .cc-meta{display:flex;flex-wrap:wrap;gap:6px}
body.kk-home .ct-meta span,body.kk-home .cc-meta span{
  font-size:11px;color:var(--kk-text2);background:var(--kk-bg-hover);
  padding:3px 10px;border-radius:6px;
}
body.kk-home .ct-arrow,body.kk-home .cc-arrow{
  position:absolute;right:18px;bottom:18px;width:26px;height:26px;border-radius:50%;
  background:var(--kk-primary-lighter);color:var(--kk-primary);display:flex;align-items:center;justify-content:center;
  font-size:14px;transition:all .2s;
}
body.kk-home .ct-card:hover .ct-arrow,body.kk-home .core-card:hover .cc-arrow{background:var(--kk-primary);color:#fff}

/* 全部工具中心网格 */
body.kk-home .core-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:14px}
body.kk-home .core-card{
  position:relative;display:block;background:#fff;border:1px solid var(--kk-border);
  border-radius:12px;padding:18px;transition:all .22s;
}
body.kk-home .core-card:hover{border-color:rgba(78,110,242,.35);box-shadow:var(--kk-shadow);transform:translateY(-2px)}
body.kk-home .cc-icon{width:38px;height:38px;border-radius:10px;background:var(--kk-bg-hover);display:flex;align-items:center;justify-content:center;font-size:19px;margin-bottom:10px}
body.kk-home .core-card h3{font-size:15px;font-weight:700;color:var(--kk-text);margin-bottom:6px}
body.kk-home .cc-tag{font-size:10px;font-weight:600;color:var(--kk-gold);background:var(--kk-gold-lighter);padding:2px 8px;border-radius:10px;vertical-align:2px;margin-left:4px}
body.kk-home .core-card p{font-size:12px;line-height:1.7;color:var(--kk-text3);margin-bottom:10px}

/* 热门推荐 */
body.kk-home .hot-section{padding-top:40px}
body.kk-home .hot-title{font-size:20px;font-weight:800;color:var(--kk-text);margin-bottom:18px}
body.kk-home .hot-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:12px}
body.kk-home .hot-card{
  display:flex;align-items:center;gap:14px;background:#fff;border:1px solid var(--kk-border);
  border-radius:12px;padding:14px 16px;transition:all .22s;
}
body.kk-home .hot-card:hover{border-color:rgba(78,110,242,.35);box-shadow:var(--kk-shadow);transform:translateY(-2px)}
body.kk-home .hot-icon{width:42px;height:42px;border-radius:10px;background:var(--kk-primary-lighter);display:flex;align-items:center;justify-content:center;font-size:20px;flex-shrink:0}
body.kk-home .hot-info{flex:1;min-width:0}
body.kk-home .hot-info h3{font-size:14px;font-weight:700;color:var(--kk-text);margin-bottom:3px}
body.kk-home .hot-info p{font-size:12px;color:var(--kk-text3);margin-bottom:5px}
body.kk-home .hot-tags{display:flex;flex-wrap:wrap;gap:6px}
body.kk-home .hot-tag{font-size:11px;color:var(--kk-primary);background:var(--kk-primary-lighter);padding:2px 10px;border-radius:12px}
body.kk-home .hot-arrow{color:var(--kk-text4);font-size:16px;flex-shrink:0;transition:all .2s}
body.kk-home .hot-card:hover .hot-arrow{color:var(--kk-primary);transform:translateX(3px)}

/* 顶部筛选 Tab */
body.kk-home .filter-bar{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  max-width:1200px;margin:44px auto 0;padding:0 24px;
}
body.kk-home .filter-tag{
  background:#fff;border:1px solid var(--kk-border);color:var(--kk-text2);
  padding:7px 16px;border-radius:20px;font-size:13px;cursor:pointer;transition:all .2s;
}
body.kk-home .filter-tag:hover{border-color:var(--kk-primary);color:var(--kk-primary)}
body.kk-home .filter-tag.active{
  background:var(--kk-primary);border-color:var(--kk-primary);color:#fff;
  box-shadow:0 2px 8px rgba(78,110,242,.25);
}
body.kk-home .filter-tag.ai-only,body.kk-home .filter-tag.free-only{color:var(--kk-accent);border-color:rgba(0,198,167,.4)}
body.kk-home .filter-tag.ai-only.active,body.kk-home .filter-tag.free-only.active{background:var(--kk-accent);border-color:var(--kk-accent);color:#fff;box-shadow:0 2px 8px rgba(0,198,167,.28)}

/* 会员提示条 */
body.kk-home .premium-notice{
  display:flex;align-items:center;gap:14px;max-width:1200px;margin:24px auto 0;padding:16px 24px;
  background:linear-gradient(120deg,#eef1fe,#e6faf6);border:1px solid rgba(78,110,242,.14);
  border-radius:12px;
}
body.kk-home .pn-icon{font-size:22px;flex-shrink:0}
body.kk-home .pn-text{flex:1;min-width:0}
body.kk-home .pn-title{font-size:14px;font-weight:700;color:var(--kk-text)}
body.kk-home .pn-desc{font-size:12px;color:var(--kk-text3);margin-top:2px}
body.kk-home .pn-btn{
  background:var(--kk-primary);color:#fff;padding:8px 18px;border-radius:8px;
  font-size:13px;font-weight:500;transition:all .2s;flex-shrink:0;
}
body.kk-home .pn-btn:hover{background:var(--kk-primary-dark);color:#fff}

/* 工具网格（分类） */
body.kk-home .section#tools{padding-top:36px}
body.kk-home .cat-section{margin-bottom:20px}
body.kk-home .section-header{
  display:flex;align-items:center;gap:10px;padding:12px 6px;margin-bottom:12px;
  border-left:3px solid var(--kk-primary) !important;
}
body.kk-home .section-header h2{font-size:17px;font-weight:700;color:var(--kk-text);margin:0}
body.kk-home .cat-icon{font-size:20px}
body.kk-home .count{font-size:12px;color:var(--kk-text3);background:var(--kk-bg-hover);padding:3px 12px;border-radius:12px}
body.kk-home .app-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(235px,1fr));gap:12px}
body.kk-home .app-card{
  position:relative;display:block;background:#fff;border:1px solid var(--kk-border);
  border-radius:10px;padding:16px;transition:all .22s;
}
body.kk-home .app-card:hover{border-color:rgba(78,110,242,.4);box-shadow:var(--kk-shadow);transform:translateY(-2px)}
body.kk-home .app-card .icon{width:38px;height:38px;border-radius:9px;background:var(--kk-primary-lighter);display:flex;align-items:center;justify-content:center;font-size:19px;margin-bottom:10px}
body.kk-home .app-card h3{font-size:14px;font-weight:700;color:var(--kk-text);margin-bottom:6px;padding-right:36px}
body.kk-home .app-card p{font-size:12px;line-height:1.7;color:var(--kk-text3);margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
body.kk-home .app-card .tag-row{display:flex;flex-wrap:wrap;gap:6px}
body.kk-home .app-card .tag{font-size:11px;color:var(--kk-text2);background:var(--kk-bg-hover);padding:2px 9px;border-radius:6px}
body.kk-home .app-card .tool-ai-tag,body.kk-home .app-card .tool-free-tag{
  position:absolute;top:12px;right:12px;font-size:10px;font-weight:600;padding:2px 9px;border-radius:10px;
}
body.kk-home .tool-ai-tag{color:var(--kk-primary);background:var(--kk-primary-lighter)}
body.kk-home .tool-free-tag{color:var(--kk-success);background:var(--kk-success-bg)}
body.kk-home .app-card.hidden,body.kk-home .cat-section.hidden{display:none !important}
body.kk-home .no-result{display:none;text-align:center;padding:48px 0;color:var(--kk-text3);font-size:15px}
body.kk-home .no-result.show{display:block}

/* 页脚 */
body.kk-home footer{
  margin-top:48px;padding:32px 24px;text-align:center;font-size:13px;color:var(--kk-text3);
  border-top:1px solid var(--kk-border);background:#fff;
}
body.kk-home footer a{color:var(--kk-primary)}

/* 移动端首页导航 */
@media(max-width:768px){
  body.kk-home nav{padding:0 12px}
  body.kk-home .kk-menu-btn{display:inline-flex}
  body.kk-home .nav-links{
    position:fixed;top:var(--kk-nav-h);left:0;right:0;flex-direction:column;align-items:stretch;
    background:#fff;border-bottom:1px solid var(--kk-border);padding:8px 12px;display:none;z-index:99;
  }
  body.kk-home .nav-links.kk-open{display:flex}
  body.kk-home .nav-links a{padding:11px 14px;border-radius:9px}
  body.kk-home .hero{padding:44px 16px 40px}
  body.kk-home .hero h1{font-size:30px}
  body.kk-home .stats-bar{gap:26px}
  body.kk-home .stats-bar .num{font-size:22px}
  body.kk-home .core-tools,body.kk-home .core-systems,body.kk-home .hot-section,body.kk-home .section{padding-left:16px;padding-right:16px}
  body.kk-home .ct-grid,body.kk-home .core-grid,body.kk-home .hot-grid,body.kk-home .app-grid{grid-template-columns:repeat(auto-fill,minmax(160px,1fr))}
  body.kk-home .filter-bar{padding:0 16px}
  body.kk-home .premium-notice{flex-wrap:wrap;margin-left:16px;margin-right:16px}
}

/* ═══════════════════════════════════════════════════════════════
   第三部分：弹窗（登录/注册等，通用）
   ═══════════════════════════════════════════════════════════════ */
.modal-overlay{
  display:none;position:fixed;inset:0;z-index:999;background:rgba(31,35,41,.45);
  backdrop-filter:blur(3px);align-items:center;justify-content:center;padding:20px;
}
.modal-overlay.show{display:flex}
.modal-box{
  background:#fff;border-radius:14px;width:100%;max-width:400px;padding:28px;
  box-shadow:var(--kk-shadow-lg);position:relative;animation:kkModalIn .25s ease;
}
@keyframes kkModalIn{from{opacity:0;transform:translateY(12px) scale(.98)}to{opacity:1;transform:translateY(0) scale(1)}}
.modal-close{
  position:absolute;top:14px;right:16px;font-size:22px;color:var(--kk-text3);cursor:pointer;
  width:30px;height:30px;display:flex;align-items:center;justify-content:center;border-radius:8px;transition:all .15s;
}
.modal-close:hover{background:var(--kk-bg-hover);color:var(--kk-text)}
.modal-header{text-align:center;margin-bottom:22px}
.modal-header .icon{font-size:34px;margin-bottom:6px}
.modal-header h3{font-size:19px;font-weight:700;color:var(--kk-text);margin-bottom:4px}
.modal-header p{font-size:12px;color:var(--kk-text3)}
.form-group{margin-bottom:16px}
.form-label{display:block;font-size:13px;color:var(--kk-text2);margin-bottom:6px;font-weight:500}
.form-input{
  width:100%;height:42px;border:1px solid var(--kk-border);border-radius:9px;padding:0 14px;
  font-size:14px;color:var(--kk-text);background:#fff;outline:none;transition:all .2s;
}
.form-input:focus{border-color:var(--kk-primary);box-shadow:0 0 0 3px rgba(78,110,242,.12)}
.form-input.error{border-color:var(--kk-danger)}
.captcha-row{display:flex;gap:10px}
.captcha-row .form-input{flex:1}
.captcha-box{border:1px solid var(--kk-border);border-radius:9px;overflow:hidden;cursor:pointer;flex-shrink:0}
.form-error{display:none;font-size:12px;color:var(--kk-danger);margin-top:5px}
.form-error.show{display:block}
.modal-btn{
  width:100%;height:44px;background:var(--kk-primary);color:#fff;border:none;border-radius:9px;
  font-size:15px;font-weight:600;cursor:pointer;transition:all .2s;margin-top:4px;
  box-shadow:0 4px 12px rgba(78,110,242,.28);
}
.modal-btn:hover{background:var(--kk-primary-dark)}
.modal-switch{text-align:center;font-size:13px;color:var(--kk-text3);margin-top:14px}
.modal-switch a{color:var(--kk-primary);cursor:pointer}

/* ═══════════════════════════════════════════════════════════════
   第四部分：工具页 / 会员中心（app-header + 左侧窄导航 + 卡片内容）
   ═══════════════════════════════════════════════════════════════ */
.app-header{
  position:sticky;top:0;z-index:100;background:rgba(255,255,255,.96);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--kk-border);
  padding:0 20px;height:52px;display:flex;align-items:center;justify-content:space-between;
}
.app-header .logo{display:flex;align-items:center;gap:9px;font-size:15px;font-weight:700;color:var(--kk-text)}
.app-header .logo .dot{
  width:9px;height:9px;border-radius:50%;
  background:linear-gradient(135deg,var(--kk-primary),var(--kk-accent));
}
.app-header .user-area{display:flex;align-items:center;gap:10px}
.app-header .user-info{font-size:12px;color:var(--kk-text2)}
.app-header .vip-badge{
  background:linear-gradient(120deg,var(--kk-gold),#ffb800);color:#fff;padding:2px 10px;
  border-radius:11px;font-size:10px;font-weight:700;
}
.header-btn{
  background:#fff;border:1px solid var(--kk-border);padding:5px 14px;border-radius:8px;
  font-size:12px;cursor:pointer;color:var(--kk-text2);transition:all .2s;
}
.header-btn:hover{border-color:var(--kk-primary);color:var(--kk-primary)}

.app-layout{display:flex;min-height:calc(100vh - 52px)}
.sidebar{
  width:186px;background:#fff;border-right:1px solid var(--kk-border);
  padding:12px 0;flex-shrink:0;position:sticky;top:52px;height:calc(100vh - 52px);overflow-y:auto;
}
.sidebar::-webkit-scrollbar{width:4px}
.sidebar::-webkit-scrollbar-thumb{background:var(--kk-border);border-radius:2px}
.sidebar .nav-item{
  display:flex;align-items:center;gap:10px;padding:10px 16px;cursor:pointer;
  font-size:13px;color:var(--kk-text2);transition:all .15s;border-left:2px solid transparent;margin:1px 8px;border-radius:8px;
}
.sidebar .nav-item:hover{background:var(--kk-bg-hover);color:var(--kk-text)}
.sidebar .nav-item.active{background:var(--kk-primary-lighter);color:var(--kk-primary);border-left-color:var(--kk-primary);font-weight:600}
.sidebar .nav-item .icon{font-size:15px;width:20px;text-align:center}
.sidebar .nav-section{
  font-size:11px;color:var(--kk-text3);padding:14px 18px 6px;font-weight:600;letter-spacing:.5px;
}
.sidebar .nav-tip{font-size:11px;color:var(--kk-text3);padding:8px 18px;line-height:1.6}
.main-content{flex:1;padding:24px;max-width:1080px;min-width:0}
.module{display:none}
.module.active{display:block;animation:kkFadeIn .28s ease}
@keyframes kkFadeIn{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}
.menu-toggle{
  display:none;background:none;border:none;font-size:20px;cursor:pointer;color:var(--kk-text2);padding:2px 6px;border-radius:6px;
}
.sidebar-overlay{display:none}

.card{
  background:var(--kk-bg-card);border:1px solid var(--kk-border);border-radius:10px;
  padding:18px;margin-bottom:14px;box-shadow:var(--kk-shadow-xs);
}
.card-title{font-size:14px;font-weight:600;margin-bottom:12px;display:flex;align-items:center;gap:8px;color:var(--kk-text)}
.card-title .icon{font-size:16px}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  padding:7px 16px;border-radius:8px;font-size:13px;font-weight:500;cursor:pointer;transition:all .2s;
  border:1px solid var(--kk-border);background:#fff;color:var(--kk-text2);
}
.btn:hover{border-color:var(--kk-primary);color:var(--kk-primary)}
.btn-primary{background:var(--kk-primary);border-color:var(--kk-primary);color:#fff;box-shadow:0 2px 8px rgba(78,110,242,.25)}
.btn-primary:hover{background:var(--kk-primary-dark);color:#fff}
.btn-success{background:var(--kk-success);border-color:var(--kk-success);color:#fff}
.btn-gold{background:linear-gradient(120deg,var(--kk-gold),#ffb800);border-color:transparent;color:#fff}
.btn-danger{background:var(--kk-danger);border-color:var(--kk-danger);color:#fff}
.btn-lg{padding:10px 22px;font-size:14px;border-radius:9px}
.btn-sm{padding:4px 12px;font-size:12px}
.btn:disabled{opacity:.5;cursor:not-allowed}

.tag{font-size:11px;padding:2px 9px;border-radius:6px;background:var(--kk-bg-hover);color:var(--kk-text2)}

/* 表单（工具页） */
select.form-input,textarea.form-input{width:100%;height:40px;padding:0 12px;font-size:13px;color:var(--kk-text);outline:none;transition:all .2s;border:1px solid var(--kk-border);border-radius:8px;background:#fff}
textarea.form-input{height:auto;padding:10px 12px;line-height:1.6;resize:vertical}
input:focus,select:focus,textarea:focus{border-color:var(--kk-primary) !important;box-shadow:0 0 0 3px rgba(78,110,242,.10)}

/* 全局 gsb 侧边栏（kuku 化：窄、浅色、hover浅背景） */
:root{
  --gsb-width:216px;
  --gsb-collapsed-width:60px;
  --gsb-bg:#ffffff;
  --gsb-border:#e5e6eb;
  --gsb-text:#1f2329;
  --gsb-text2:#4e5969;
  --gsb-text3:#86909c;
  --gsb-primary:#4e6ef2;
  --gsb-hover-bg:#f2f3f5;
  --gsb-active-bg:linear-gradient(90deg,rgba(78,110,242,.08),rgba(0,198,167,.05));
  --gsb-radius:10px;
  --gsb-shadow:0 2px 8px rgba(31,35,41,.06);
}
.gsb-logo .gsb-logo-dot{
  background:linear-gradient(135deg,#4e6ef2,#00c6a7);
  border-radius:8px;
}
.gsb-quick-link:hover,.gsb-category-header:hover{background:var(--gsb-hover-bg)}
.gsb-tool-link:hover{background:var(--gsb-hover-bg)}
.gsb-tool-link.gsb-active{
  background:var(--gsb-primary-lighter) !important;
  color:var(--gsb-primary) !important;
  border-left-color:var(--gsb-primary) !important;
}
.gsb-tool-link.gsb-active .gsb-tool-dot{background:var(--gsb-primary) !important}

/* ═══════════════════════════════════════════════════════════════
   第五部分：移动端（工具页/会员页）
   ═══════════════════════════════════════════════════════════════ */
@media(max-width:768px){
  .menu-toggle{display:inline-flex}
  .sidebar{
    position:fixed;left:0;top:52px;bottom:0;z-index:998;width:240px;
    transform:translateX(-100%);transition:transform .28s ease;box-shadow:4px 0 24px rgba(0,0,0,.1);
  }
  .sidebar.open{transform:translateX(0)}
  .sidebar-overlay.show{display:block;position:fixed;inset:0;background:rgba(31,35,41,.4);z-index:997}
  .main-content{padding:16px}
  .app-header{padding:0 12px}
  .app-header .user-info{display:none}
}


/* ═══════════════════════════════════════════════════════════════
   第六部分：小屏移动端优化（≤480px）
   修复KPI多列溢出、表格横向滚动、容器边距
   ═══════════════════════════════════════════════════════════════ */
@media(max-width:480px){
  /* KPI行：5列→2列 */
  .kpi-row{grid-template-columns:repeat(2,1fr) !important;gap:8px !important;}
  .kpi{padding:12px 8px !important;}
  .kpi .v{font-size:18px !important;}
  /* 表格横向滚动 */
  .card table,.table-wrap{display:block;overflow-x:auto;-webkit-overflow-scrolling:touch;}
  table{min-width:480px;}
  /* 容器边距收紧 */
  .container{padding:0 8px !important;}
  .card{padding:14px !important;}
  /* 标签换行 */
  .tabs{flex-wrap:wrap;}
  /* 模态框适配 */
  .modal-content{width:95% !important;padding:16px !important;}
  /* 输入框字号防缩放 */
  input,select,textarea{font-size:16px !important;}
}