/* ========================================
   风格1：赛博霓虹 Neon Cyberpunk（深色 + 霓虹紫青）
   ======================================== */

:root {
  --color-primary: #f4f4f5;
  --color-accent: #14b8a6;
  --color-accent-hover: #0d9488;
  --color-accent-light: rgba(20, 184, 166, 0.14);

  --color-bg: #0a0a0f;
  --color-bg-alt: #12121a;
  --color-bg-dark: #06060a;
  --color-text: #e5e7eb;
  --color-text-light: #a1a1aa;
  --color-text-muted: #71717a;
  --color-border: #26262e;
  --color-border-light: #1b1b22;

  --color-success: #4ade80;
  --color-warning: #facc15;
  --color-error: #f87171;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SF Mono", "Fira Code", "Fira Mono", "Roboto Mono", monospace;

  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  --spacing-4xl: 6rem;

  --radius-sm: 0.375rem;
  --radius-md: 0.625rem;
  --radius-lg: 0.875rem;
  --radius-xl: 1.25rem;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.5);
  --shadow-md: 0 6px 20px -6px rgba(0, 0, 0, 0.6);
  --shadow-lg: 0 18px 40px -12px rgba(20, 184, 166, 0.35);
  --shadow-xl: 0 24px 60px -12px rgba(0, 0, 0, 0.7);

  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 350ms ease;

  --container-max: 1200px;
  --container-narrow: 900px;
  --nav-height: 72px;
}

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

html { font-size: 16px; scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background-color: var(--color-bg);
  background-image:
    radial-gradient(ellipse at 20% 0%, rgba(20, 184, 166, 0.12) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 10%, rgba(6, 182, 212, 0.08) 0%, transparent 50%);
  background-attachment: fixed;
  line-height: 1.75;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a { color: var(--color-accent); text-decoration: none; transition: color var(--transition-fast); }
a:hover { color: var(--color-accent-hover); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }

.container { width: 100%; max-width: var(--container-max); margin: 0 auto; padding: 0 var(--spacing-xl); }
.container-narrow { max-width: var(--container-narrow); }

/* 导航栏 */
.navbar {
  position: fixed; top: 0; left: 0; right: 0;
  height: var(--nav-height);
  background: rgba(10, 10, 15, 0.8);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-border-light);
  z-index: 1000;
  transition: box-shadow var(--transition-base), border-color var(--transition-base);
}
.navbar.scrolled { box-shadow: var(--shadow-md); border-bottom-color: rgba(20, 184, 166, 0.3); }
.navbar .container { display: flex; align-items: center; justify-content: space-between; height: 100%; }

.navbar-brand {
  font-size: 1.3rem; font-weight: 700; color: #fff; letter-spacing: 0.01em; white-space: nowrap;
}
.navbar-brand:hover { color: var(--color-accent); text-shadow: 0 0 12px rgba(20, 184, 166, 0.8); }

.navbar-links { display: flex; align-items: center; gap: var(--spacing-xl); }
.navbar-links a { font-size: 0.938rem; font-weight: 500; color: var(--color-text-light); position: relative; padding: var(--spacing-xs) 0; transition: color var(--transition-fast); }
.navbar-links a::after { content: ''; position: absolute; bottom: -2px; left: 0; width: 0; height: 2px; background: linear-gradient(90deg, var(--color-accent), #06b6d4); border-radius: var(--radius-full); transition: width var(--transition-base); }
.navbar-links a:hover, .navbar-links a.active { color: #fff; }
.navbar-links a.active::after, .navbar-links a:hover::after { width: 100%; }

.navbar-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: var(--spacing-xs); z-index: 1001; }
.navbar-toggle span { display: block; width: 24px; height: 2px; background: #fff; border-radius: var(--radius-full); transition: all var(--transition-base); }
.navbar-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.navbar-toggle.active span:nth-child(2) { opacity: 0; }
.navbar-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

.main-content { flex: 1; margin-top: var(--nav-height); }

/* 页面标题区 */
.page-hero {
  position: relative; padding: var(--spacing-4xl) 0 var(--spacing-3xl);
  text-align: center; overflow: hidden;
  background:
    radial-gradient(ellipse at 50% -20%, rgba(20, 184, 166, 0.25) 0%, transparent 60%),
    var(--color-bg-alt);
}
.page-hero::before { content: ''; position: absolute; inset: 0; background-image: linear-gradient(rgba(168,85,247,0.06) 1px, transparent 1px), linear-gradient(90deg, rgba(168,85,247,0.06) 1px, transparent 1px); background-size: 40px 40px; pointer-events: none; }
.page-hero h1 { font-size: 2.75rem; font-weight: 800; color: #fff; letter-spacing: -0.02em; margin-bottom: var(--spacing-md); position: relative; }
.page-hero p { font-size: 1.125rem; color: var(--color-text-light); max-width: 600px; margin: 0 auto; position: relative; }

/* 首页 Hero */
.home-hero {
  position: relative; padding: var(--spacing-4xl) 0;
  color: #fff; text-align: center; overflow: hidden;
  min-height: 86vh; display: flex; align-items: center;
  background:
    radial-gradient(ellipse at 25% 30%, rgba(20, 184, 166, 0.35) 0%, transparent 50%),
    radial-gradient(ellipse at 75% 25%, rgba(6, 182, 212, 0.22) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 100%, rgba(20, 184, 166, 0.15) 0%, transparent 45%),
    #0a0a0f;
}
.home-hero::before { content: ''; position: absolute; inset: 0; background-image: linear-gradient(rgba(168,85,247,0.08) 1px, transparent 1px), linear-gradient(90deg, rgba(34,211,238,0.06) 1px, transparent 1px); background-size: 50px 50px; pointer-events: none; animation: gridMove 20s linear infinite; }
.home-hero::after { content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 120px; background: linear-gradient(to top, var(--color-bg), transparent); }
.home-hero .container { position: relative; z-index: 1; }
.home-hero h1 { font-size: 3.6rem; font-weight: 800; letter-spacing: -0.02em; margin-bottom: var(--spacing-lg); line-height: 1.15; animation: fadeInUp 0.8s ease; text-shadow: 0 0 40px rgba(20, 184, 166, 0.5); }
.home-hero p { font-size: 1.25rem; opacity: 0.85; max-width: 660px; margin: 0 auto var(--spacing-2xl); line-height: 1.85; animation: fadeInUp 0.8s ease 0.15s both; }
.home-hero .btn-group { display: flex; gap: var(--spacing-md); justify-content: center; flex-wrap: wrap; animation: fadeInUp 0.8s ease 0.3s both; }

/* 按钮 */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: var(--spacing-sm); padding: 0.8rem 1.85rem; font-size: 0.938rem; font-weight: 600; border-radius: var(--radius-md); border: 1px solid transparent; cursor: pointer; transition: all var(--transition-base); white-space: nowrap; line-height: 1.5; }
.btn-primary { background: linear-gradient(135deg, #14b8a6, #0f766e); color: #fff; border-color: transparent; box-shadow: 0 8px 24px -6px rgba(20, 184, 166, 0.5); }
.btn-primary:hover { background: linear-gradient(135deg, #2dd4bf, #5eead4); color: #fff; transform: translateY(-2px); box-shadow: 0 14px 34px -6px rgba(20, 184, 166, 0.7); }
.btn-outline { background: transparent; color: #fff; border-color: rgba(20, 184, 166, 0.5); }
.btn-outline:hover { background: rgba(20, 184, 166, 0.15); border-color: #14b8a6; color: #fff; }
.btn-outline-dark { background: transparent; color: var(--color-text); border-color: var(--color-border); }
.btn-outline-dark:hover { background: var(--color-border); color: #fff; border-color: var(--color-border); }
.btn-sm { padding: 0.55rem 1.3rem; font-size: 0.875rem; }
.btn-lg { padding: 1.05rem 2.4rem; font-size: 1rem; }

/* 通用区块 */
.section { padding: var(--spacing-4xl) 0; }
.section-alt { background: var(--color-bg-alt); }
.section-header { text-align: center; margin-bottom: var(--spacing-3xl); }
.section-header h2 { font-size: 2.3rem; font-weight: 800; color: #fff; letter-spacing: -0.02em; margin-bottom: var(--spacing-md); position: relative; padding-bottom: var(--spacing-md); }
.section-header h2::after { content: ''; position: absolute; bottom: 0; left: 50%; transform: translateX(-50%); width: 56px; height: 3px; background: linear-gradient(90deg, var(--color-accent), #06b6d4); border-radius: var(--radius-full); }
.section-header p { font-size: 1.063rem; color: var(--color-text-light); max-width: 560px; margin: 0 auto; }

/* 特性卡片 */
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--spacing-xl); }
.feature-card { background: var(--color-bg-alt); border: 1px solid var(--color-border-light); border-radius: var(--radius-lg); padding: var(--spacing-2xl); transition: all var(--transition-base); }
.feature-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); border-color: rgba(20, 184, 166, 0.4); }
.feature-icon { width: 56px; height: 56px; display: flex; align-items: center; justify-content: center; background: var(--color-accent-light); border: 1px solid rgba(20, 184, 166, 0.3); border-radius: var(--radius-lg); margin-bottom: var(--spacing-lg); font-size: 1.5rem; }
.feature-card h3 { font-size: 1.25rem; font-weight: 700; color: #fff; margin-bottom: var(--spacing-sm); }
.feature-card p { font-size: 0.938rem; color: var(--color-text-light); line-height: 1.75; }

/* 主营业务网格 */
.main-business-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--spacing-xl); }
.business-item { text-align: center; padding: var(--spacing-2xl) var(--spacing-xl); background: var(--color-bg-alt); border: 1px solid var(--color-border-light); border-radius: var(--radius-lg); transition: all var(--transition-base); }
.business-item:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); border-color: rgba(20, 184, 166, 0.4); }
.business-item-icon { width: 64px; height: 64px; display: flex; align-items: center; justify-content: center; border-radius: var(--radius-lg); margin: 0 auto var(--spacing-lg); font-size: 1.5rem; }
.business-item h4 { font-size: 1.125rem; font-weight: 700; color: #fff; margin-bottom: var(--spacing-sm); }
.business-item span { font-size: 0.875rem; color: var(--color-text-light); line-height: 1.6; }

/* 霓虹图标色板 */
.biz-1, .prod-1 { background: rgba(6, 182, 212, 0.14); color: #06b6d4; border: 1px solid rgba(6, 182, 212, 0.3); }
.biz-2, .prod-2 { background: rgba(167, 139, 250, 0.14); color: #a78bfa; border: 1px solid rgba(167, 139, 250, 0.3); }
.biz-3, .prod-3 { background: rgba(232, 121, 249, 0.14); color: #e879f9; border: 1px solid rgba(232, 121, 249, 0.3); }
.biz-4, .prod-4 { background: rgba(96, 165, 250, 0.14); color: #60a5fa; border: 1px solid rgba(96, 165, 250, 0.3); }
.biz-5, .prod-5 { background: rgba(74, 222, 128, 0.14); color: #4ade80; border: 1px solid rgba(74, 222, 128, 0.3); }
.biz-6, .prod-6 { background: rgba(251, 146, 60, 0.14); color: #fb923c; border: 1px solid rgba(251, 146, 60, 0.3); }

/* 关于我们 */
.about-content { display: grid; grid-template-columns: 1fr 1fr; gap: var(--spacing-3xl); align-items: center; }
.about-image { border-radius: var(--radius-xl); overflow: hidden; background: var(--color-bg-alt); aspect-ratio: 4/3; display: flex; align-items: center; justify-content: center; position: relative; }
.about-image-placeholder { width: 100%; height: 100%; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg, rgba(20, 184, 166, 0.15), rgba(6, 182, 212, 0.1)); color: var(--color-accent); font-size: 3rem; }
.about-text h2 { font-size: 2rem; font-weight: 800; color: #fff; margin-bottom: var(--spacing-lg); letter-spacing: -0.02em; }
.about-text p { color: var(--color-text-light); line-height: 1.9; margin-bottom: var(--spacing-md); font-size: 0.969rem; }

/* 时间线 */
.timeline { position: relative; padding-left: var(--spacing-2xl); }
.timeline::before { content: ''; position: absolute; left: 7px; top: 8px; bottom: 8px; width: 2px; background: var(--color-border); }
.timeline-item { position: relative; padding-bottom: var(--spacing-2xl); }
.timeline-item:last-child { padding-bottom: 0; }
.timeline-dot { position: absolute; left: calc(-1 * var(--spacing-2xl) + 3px); top: 4px; width: 10px; height: 10px; background: var(--color-accent); border-radius: 50%; border: 2px solid var(--color-bg); box-shadow: 0 0 0 2px var(--color-accent), 0 0 12px rgba(20, 184, 166, 0.8); }
.timeline-stage { font-size: 1.05rem; font-weight: 700; color: var(--color-accent); margin-bottom: var(--spacing-xs); }
.timeline-item p { color: var(--color-text-light); font-size: 0.938rem; }

/* 产品卡片 */
.products-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--spacing-xl); }
.product-card { background: var(--color-bg-alt); border: 1px solid var(--color-border-light); border-radius: var(--radius-lg); overflow: hidden; transition: all var(--transition-base); }
.product-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); border-color: rgba(20, 184, 166, 0.4); }
.product-image { width: 100%; aspect-ratio: 16/10; background: var(--color-bg-alt); display: flex; align-items: center; justify-content: center; font-size: 2.5rem; color: var(--color-text-muted); }
.product-body { padding: var(--spacing-xl); }
.product-body h3 { font-size: 1.188rem; font-weight: 700; color: #fff; margin-bottom: var(--spacing-sm); }
.product-body p { font-size: 0.938rem; color: var(--color-text-light); line-height: 1.75; margin-bottom: var(--spacing-lg); }
.product-tags { display: flex; flex-wrap: wrap; gap: var(--spacing-xs); }
.product-tag { font-size: 0.75rem; font-weight: 500; padding: 0.28rem 0.8rem; background: var(--color-accent-light); color: var(--color-accent); border-radius: var(--radius-full); }

/* 联系我们 */
.contact-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: var(--spacing-3xl); }
.contact-info h2 { font-size: 2rem; font-weight: 800; color: #fff; margin-bottom: var(--spacing-md); letter-spacing: -0.02em; }
.contact-info > p { color: var(--color-text-light); margin-bottom: var(--spacing-2xl); line-height: 1.8; }
.contact-list { display: flex; flex-direction: column; gap: var(--spacing-lg); margin-bottom: var(--spacing-2xl); }
.contact-item { display: flex; align-items: flex-start; gap: var(--spacing-md); }
.contact-item-icon { width: 44px; height: 44px; display: flex; align-items: center; justify-content: center; background: var(--color-accent-light); border: 1px solid rgba(20, 184, 166, 0.3); border-radius: var(--radius-md); font-size: 1.125rem; flex-shrink: 0; }
.contact-item-text h4 { font-size: 0.875rem; font-weight: 600; color: var(--color-text-light); margin-bottom: 2px; }
.contact-item-text span { font-size: 1rem; color: #fff; font-weight: 500; }
.contact-info-solo { max-width: 680px; margin: 0 auto; }
.contact-info-solo h2 { font-size: 2rem; font-weight: 800; color: #fff; margin-bottom: var(--spacing-md); letter-spacing: -0.02em; text-align: center; }
.contact-info-solo > p { color: var(--color-text-light); margin-bottom: var(--spacing-2xl); line-height: 1.8; text-align: center; }
.contact-actions { display: flex; gap: var(--spacing-md); justify-content: center; flex-wrap: wrap; margin-top: var(--spacing-xl); }

.contact-form { background: var(--color-bg-alt); border: 1px solid var(--color-border-light); border-radius: var(--radius-xl); padding: var(--spacing-2xl); }
.contact-form h3 { font-size: 1.375rem; font-weight: 700; color: #fff; margin-bottom: var(--spacing-xl); }
.form-group { margin-bottom: var(--spacing-lg); }
.form-group label { display: block; font-size: 0.875rem; font-weight: 600; color: var(--color-text); margin-bottom: var(--spacing-sm); }
.form-group input, .form-group textarea { width: 100%; padding: 0.8rem 1rem; font-size: 0.938rem; font-family: var(--font-sans); color: var(--color-text); background: var(--color-bg); border: 1px solid var(--color-border); border-radius: var(--radius-md); transition: all var(--transition-fast); outline: none; }
.form-group input:focus, .form-group textarea:focus { border-color: var(--color-accent); box-shadow: 0 0 0 3px rgba(20, 184, 166, 0.2); }
.form-group textarea { resize: vertical; min-height: 140px; }
.form-submit { width: 100%; }

/* 页脚 */
.footer { background: var(--color-bg-dark); color: rgba(255, 255, 255, 0.65); padding: var(--spacing-3xl) 0 var(--spacing-xl); margin-top: auto; border-top: 1px solid var(--color-border-light); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: var(--spacing-3xl); margin-bottom: var(--spacing-2xl); }
.footer-brand h3 { font-size: 1.3rem; font-weight: 700; color: #fff; margin-bottom: var(--spacing-md); }
.footer-brand p { font-size: 0.875rem; line-height: 1.75; opacity: 0.8; }
.footer-links h4 { font-size: 0.875rem; font-weight: 600; color: #fff; margin-bottom: var(--spacing-md); }
.footer-links a { display: block; font-size: 0.875rem; color: rgba(255, 255, 255, 0.55); padding: var(--spacing-xs) 0; transition: color var(--transition-fast); }
.footer-links a:hover { color: var(--color-accent); }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, 0.1); padding-top: var(--spacing-xl); display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: var(--spacing-md); font-size: 0.813rem; }
.footer-bottom a { color: rgba(255, 255, 255, 0.55); }
.footer-bottom a:hover { color: #fff; }

/* 统计 */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--spacing-xl); text-align: center; }
.stat-item h3 { font-size: 2.5rem; font-weight: 800; color: var(--color-accent); letter-spacing: -0.02em; line-height: 1.2; }
.stat-item p { font-size: 0.938rem; color: var(--color-text-light); margin-top: var(--spacing-xs); }

/* CTA */
.cta-section { background: linear-gradient(135deg, #14b8a6, #06b6d4); color: #fff; text-align: center; padding: var(--spacing-4xl) 0; position: relative; overflow: hidden; }
.cta-section::before { content: ''; position: absolute; inset: 0; background: radial-gradient(ellipse at center, rgba(255,255,255,0.15) 0%, transparent 70%); pointer-events: none; }
.cta-section h2 { font-size: 2.3rem; font-weight: 800; margin-bottom: var(--spacing-md); position: relative; }
.cta-section p { font-size: 1.063rem; opacity: 0.95; max-width: 560px; margin: 0 auto var(--spacing-xl); position: relative; }
.cta-section .btn { position: relative; }
.cta-section .btn-outline { border-color: rgba(255, 255, 255, 0.6); }
.cta-section .btn-outline:hover { background: rgba(255, 255, 255, 0.18); border-color: #fff; }

/* 动画 */
@keyframes fadeInUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes gridMove { from { background-position: 0 0; } to { background-position: 50px 50px; } }
.animate-on-scroll { opacity: 0; transform: translateY(24px); transition: opacity 0.7s ease, transform 0.7s ease; }
.animate-on-scroll.visible { opacity: 1; transform: translateY(0); }

/* Toast */
.toast { position: fixed; top: calc(var(--nav-height) + var(--spacing-md)); right: var(--spacing-xl); background: var(--color-bg-alt); color: #fff; padding: var(--spacing-md) var(--spacing-lg); border-radius: var(--radius-md); border: 1px solid var(--color-border); font-size: 0.875rem; font-weight: 500; z-index: 2000; box-shadow: var(--shadow-lg); transform: translateX(calc(100% + 2rem)); transition: transform var(--transition-base); }
.toast.show { transform: translateX(0); }
.toast.success { background: var(--color-success); color: #062b18; border-color: transparent; }
.toast.error { background: var(--color-error); color: #2a0505; border-color: transparent; }

/* 管理后台 */
.admin-container { max-width: 800px; margin: 0 auto; padding: var(--spacing-3xl) var(--spacing-xl); }
.admin-card { background: var(--color-bg-alt); border: 1px solid var(--color-border-light); border-radius: var(--radius-xl); padding: var(--spacing-2xl); margin-bottom: var(--spacing-xl); }
.admin-card h2 { font-size: 1.15rem; font-weight: 700; color: #fff; margin-bottom: var(--spacing-lg); display: flex; align-items: center; gap: var(--spacing-sm); }
.csv-import textarea { width: 100%; min-height: 80px; padding: var(--spacing-md); font-family: var(--font-mono); font-size: 0.875rem; color: var(--color-text); background: var(--color-bg); border: 1px solid var(--color-border); border-radius: var(--radius-md); resize: vertical; outline: none; margin-bottom: var(--spacing-md); line-height: 1.5; }
.csv-import textarea:focus { border-color: var(--color-accent); box-shadow: 0 0 0 3px rgba(20, 184, 166, 0.2); }
.csv-help { font-size: 0.813rem; color: var(--color-text-muted); margin-bottom: var(--spacing-md); padding: var(--spacing-md); background: var(--color-bg); border-radius: var(--radius-md); border-left: 3px solid var(--color-accent); }
.csv-help code { background: var(--color-border-light); padding: 2px 6px; border-radius: 3px; font-size: 0.813rem; color: var(--color-accent); }
.csv-import .btn { width: 100%; }
.config-form { display: flex; flex-direction: column; gap: var(--spacing-md); }
.config-row { display: grid; grid-template-columns: 140px 1fr; gap: var(--spacing-md); align-items: start; }
.config-row label { font-size: 0.875rem; font-weight: 600; color: var(--color-text); padding-top: 0.75rem; }
.config-row input, .config-row textarea { width: 100%; padding: 0.75rem 1rem; font-size: 0.938rem; font-family: var(--font-sans); color: var(--color-text); background: var(--color-bg); border: 1px solid var(--color-border); border-radius: var(--radius-md); outline: none; transition: all var(--transition-fast); }
.config-row input:focus, .config-row textarea:focus { border-color: var(--color-accent); box-shadow: 0 0 0 3px rgba(20, 184, 166, 0.2); }
.config-row textarea { resize: vertical; min-height: 60px; }
.admin-actions { display: flex; gap: var(--spacing-md); justify-content: flex-end; }

/* 响应式 */
@media (max-width: 1024px) {
  .features-grid, .products-grid, .main-business-grid { grid-template-columns: repeat(2, 1fr); }
  .about-content { grid-template-columns: 1fr; gap: var(--spacing-2xl); }
  .contact-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .home-hero h1 { font-size: 2.6rem; }
  .page-hero h1 { font-size: 2.25rem; }
}
@media (max-width: 768px) {
  :root { --nav-height: 64px; }
  .container { padding: 0 var(--spacing-lg); }
  .navbar-toggle { display: flex; }
  .navbar-links { position: fixed; top: 0; right: -100%; width: 280px; height: 100vh; background: var(--color-bg-dark); flex-direction: column; padding: calc(var(--nav-height) + var(--spacing-2xl)) var(--spacing-xl) var(--spacing-xl); gap: var(--spacing-lg); box-shadow: var(--shadow-xl); transition: right var(--transition-base); z-index: 1000; }
  .navbar-links.open { right: 0; }
  .navbar-links a { font-size: 1.063rem; padding: var(--spacing-sm) 0; }
  .home-hero { min-height: 72vh; padding: var(--spacing-3xl) 0; }
  .home-hero h1 { font-size: 2.1rem; }
  .home-hero p { font-size: 1.063rem; }
  .page-hero { padding: var(--spacing-3xl) 0 var(--spacing-2xl); }
  .page-hero h1 { font-size: 1.8rem; }
  .features-grid, .products-grid, .main-business-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: var(--spacing-lg); }
  .stat-item h3 { font-size: 1.75rem; }
  .section-header h2 { font-size: 1.8rem; }
  .about-text h2 { font-size: 1.5rem; }
  .contact-form { padding: var(--spacing-xl); }
  .contact-info h2, .contact-info-solo h2 { font-size: 1.5rem; }
  .footer-grid { grid-template-columns: 1fr; gap: var(--spacing-xl); }
  .footer-bottom { flex-direction: column; text-align: center; }
  .config-row { grid-template-columns: 1fr; gap: var(--spacing-xs); }
  .config-row label { padding-top: 0; }
  .admin-actions { flex-direction: column; }
  .admin-actions .btn { width: 100%; }
}
@media (max-width: 480px) {
  .home-hero h1 { font-size: 1.7rem; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: var(--spacing-md); }
  .btn-group { flex-direction: column; align-items: center; }
  .btn-group .btn { width: 100%; max-width: 280px; }
}