/* ============================================
   DirtyCat 智能猫咪饮水机 - 官方网站样式 v2
   ============================================ */

/* --- CSS 变量 --- */
:root {
  --color-primary: #0d9488;
  --color-primary-dark: #0f766e;
  --color-primary-light: #14b8a6;
  --color-primary-bg: #ecfdf5;
  --color-primary-bg2: #f0fdfa;
  --color-bg: #f8fafc;
  --color-white: #ffffff;
  --color-text: #0f172a;
  --color-text-secondary: #475569;
  --color-text-light: #94a3b8;
  --color-border: #e2e8f0;
  --color-border-light: #f1f5f9;
  --gradient-primary: linear-gradient(135deg, #0d9488 0%, #0f766e 100%);
  --gradient-hero: linear-gradient(170deg, #f0fdfa 0%, #ecfdf5 30%, #f8fafc 60%, #f1f5f9 100%);
  --shadow-xs: 0 1px 2px rgba(0,0,0,0.04);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.05), 0 2px 4px rgba(0,0,0,0.03);
  --shadow-lg: 0 12px 30px rgba(0,0,0,0.07), 0 4px 10px rgba(0,0,0,0.04);
  --shadow-xl: 0 24px 50px rgba(0,0,0,0.1);
  --shadow-card: 0 1px 3px rgba(0,0,0,0.04), 0 8px 24px rgba(13,148,136,0.06);
  --radius-xs: 6px;
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --max-width: 1200px;
  --nav-height: 72px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- 基础重置 --- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
body{
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  color: var(--color-text); background: var(--color-bg); line-height: 1.6; overflow-x:hidden;
}
a{text-decoration:none;color:inherit}
ul{list-style:none}
img{max-width:100%;display:block}

/* --- 通用 --- */
.section-container{max-width:var(--max-width);margin:0 auto;padding:0 24px}
.section-header{text-align:center;margin-bottom:64px}
.section-tag{
  display:inline-block;font-size:12px;font-weight:700;text-transform:uppercase;
  letter-spacing:0.12em;color:var(--color-primary);
  background:linear-gradient(135deg,var(--color-primary-bg),var(--color-primary-bg2));
  padding:6px 18px;border-radius:20px;margin-bottom:16px;
  border:1px solid rgba(13,148,136,0.1);
}
.section-title{font-size:38px;font-weight:800;color:var(--color-text);margin-bottom:14px;letter-spacing:-0.025em}
.section-desc{font-size:16px;color:var(--color-text-secondary);max-width:500px;margin:0 auto}

/* --- 按钮 --- */
.btn{
  display:inline-flex;align-items:center;gap:8px;padding:15px 32px;
  border-radius:50px;font-size:15px;font-weight:600;cursor:pointer;border:none;
  transition:all var(--transition);white-space:nowrap;position:relative;overflow:hidden;
}
.btn-primary{background:var(--gradient-primary);color:#fff;box-shadow:0 4px 20px rgba(13,148,136,0.3)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 30px rgba(13,148,136,0.4)}
.btn-outline{background:var(--color-white);color:var(--color-primary-dark);border:2px solid var(--color-primary)}
.btn-outline:hover{background:var(--color-primary-bg);border-color:var(--color-primary-dark);transform:translateY(-2px)}

/* ============================================
   导航栏
   ============================================ */
.navbar{
  position:fixed;top:0;left:0;right:0;z-index:1000;padding:0 24px;
  height:var(--nav-height);transition:all var(--transition);background:transparent;
}
.navbar.scrolled{
  background:rgba(255,255,255,0.88);backdrop-filter:blur(24px) saturate(1.5);
  -webkit-backdrop-filter:blur(24px) saturate(1.5);
  box-shadow:0 1px 0 rgba(0,0,0,0.06),0 2px 8px rgba(0,0,0,0.04);
}
.nav-container{max-width:var(--max-width);margin:0 auto;display:flex;align-items:center;justify-content:space-between;height:100%}
.nav-logo{display:flex;align-items:center;gap:10px;font-size:22px;font-weight:800;color:var(--color-text);letter-spacing:-0.02em}
.logo-icon{font-size:28px}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-link{padding:8px 18px;border-radius:20px;font-size:14px;font-weight:500;color:var(--color-text-secondary);transition:all var(--transition)}
.nav-link:hover{color:var(--color-primary);background:var(--color-primary-bg)}
.nav-cta{background:var(--gradient-primary);color:#fff!important;box-shadow:0 2px 10px rgba(13,148,136,0.25);margin-left:8px}
.nav-cta:hover{opacity:0.92;box-shadow:0 4px 16px rgba(13,148,136,0.35);transform:translateY(-1px)}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:4px}
.nav-toggle span{display:block;width:24px;height:2px;background:var(--color-text);border-radius:2px;transition:all var(--transition)}

/* ============================================
   英雄区
   ============================================ */
.hero{
  min-height:100vh;display:flex;align-items:center;
  background:var(--gradient-hero);position:relative;overflow:hidden;padding-top:var(--nav-height);
}
.hero::after{
  content:'';position:absolute;bottom:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(13,148,136,0.15),transparent);
}
.hero-bg-shapes{position:absolute;inset:0;pointer-events:none;overflow:hidden}
.shape{position:absolute;border-radius:50%;filter:blur(80px);opacity:0.08}
.shape-1{width:600px;height:600px;background:var(--color-primary);top:-200px;left:-200px;animation:float 10s ease-in-out infinite}
.shape-2{width:400px;height:400px;background:var(--color-primary-dark);bottom:-100px;right:-100px;animation:float 12s ease-in-out infinite reverse}
.shape-3{width:250px;height:250px;background:var(--color-primary-light);top:55%;left:60%;animation:float 7s ease-in-out infinite 3s}

@keyframes float{
  0%,100%{transform:translate(0,0) scale(1)}
  33%{transform:translate(30px,-30px) scale(1.05)}
  66%{transform:translate(-20px,20px) scale(0.95)}
}

.hero-container{
  max-width:var(--max-width);margin:0 auto;padding:60px 24px;
  display:grid;grid-template-columns:1.1fr 0.9fr;gap:40px;align-items:center;position:relative;z-index:1;
}
.hero-content{max-width:560px}
.hero-badge{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--color-white);border:1px solid var(--color-border);
  border-radius:50px;padding:9px 20px;font-size:13px;font-weight:600;
  color:var(--color-text-secondary);margin-bottom:28px;box-shadow:var(--shadow-xs);
}
.hero-title{font-size:54px;font-weight:900;line-height:1.12;color:var(--color-text);letter-spacing:-0.035em;margin-bottom:22px}
.hero-highlight{
  background:linear-gradient(135deg,var(--color-primary),#06b6d4);-webkit-background-clip:text;
  -webkit-text-fill-color:transparent;background-clip:text;
}
.hero-subtitle{font-size:16px;color:var(--color-text-secondary);line-height:1.8;margin-bottom:36px}
.hero-actions{display:flex;gap:16px;margin-bottom:52px;flex-wrap:wrap}
.hero-stats{display:flex;gap:36px}
.hero-stat{display:flex;flex-direction:column}
.hero-stat-num{font-size:36px;font-weight:900;color:var(--color-primary)}
.hero-stat-num span{font-size:16px;font-weight:600;color:var(--color-primary-light);margin-left:2px}
.hero-stat-label{font-size:13px;color:var(--color-text-light);margin-top:6px;font-weight:500}

/* ========== 产品展示 + 水位 10%→80%→10% 循环 ========== */
.hero-visual{position:relative;display:flex;justify-content:center;align-items:center;min-height:480px}

.hero-device{position:relative;display:inline-block}

.hero-product-img{
  width:450px;position:relative;z-index:2;
  filter:drop-shadow(0 12px 36px rgba(0,0,0,0.12));
}

/* 泡泡 */
.bubbles{position:absolute;left:0;top:0;width:100%;height:100%;pointer-events:none;overflow:hidden;z-index:3}
.b{position:absolute;bottom:20%;border-radius:50%;
  background:radial-gradient(circle at 30% 30%,#fff 0%,#42a5f5 30%,#0d47a1 100%);
  box-shadow:inset 2px 2px 4px rgba(255,255,255,0.8),0 2px 6px rgba(30,130,200,0.3);
  animation:br 4s infinite ease-in}
.b1{width:8px;height:8px;left:10%;animation-duration:3.2s}
.b2{width:10px;height:10px;left:22%;animation-duration:4.0s;animation-delay:0.5s}
.b3{width:6px;height:6px;left:35%;animation-duration:3.5s;animation-delay:1.2s}
.b4{width:12px;height:12px;left:48%;animation-duration:4.5s;animation-delay:0.3s}
.b5{width:7px;height:7px;left:58%;animation-duration:3.0s;animation-delay:1.8s}
.b6{width:9px;height:9px;left:68%;animation-duration:3.8s;animation-delay:0.7s}
.b7{width:11px;height:11px;left:78%;animation-duration:4.2s;animation-delay:2.2s}
.b8{width:5px;height:5px;left:40%;animation-duration:2.8s;animation-delay:1.5s}
.b9{width:8px;height:8px;left:55%;animation-duration:3.6s;animation-delay:0.1s}
.b10{width:10px;height:10px;left:30%;animation-duration:4.8s;animation-delay:2.5s}
@keyframes br{
  0%{transform:translateY(0)translateX(0)scale(0.3);opacity:0}
  8%{opacity:0.9}
  20%{transform:translateY(-30px)translateX(3px)scale(0.8);opacity:0.8}
  50%{transform:translateY(-80px)translateX(-2px)scale(1);opacity:0.5}
  80%{transform:translateY(-130px)translateX(2px)scale(1.1);opacity:0.15}
  100%{transform:translateY(-160px)translateX(0)scale(1.2);opacity:0}
}

.hero-float-card{
  position:absolute;background:rgba(255,255,255,0.95);border-radius:var(--radius-md);
  padding:14px 20px;display:flex;align-items:center;gap:12px;
  box-shadow:var(--shadow-lg);backdrop-filter:blur(12px);border:1px solid var(--color-border);
}
.hero-float-1{top:30px;left:-50px;animation:floatCard 6s ease-in-out infinite}
.hero-float-2{bottom:100px;right:-140px;animation:floatCard 6s ease-in-out infinite 3s}
@keyframes floatCard{0%,100%{transform:translateY(0)}50%{transform:translateY(-14px)}}
.float-icon{font-size:30px;flex-shrink:0}
.float-label{font-size:12px;color:var(--color-text-light);font-weight:500}
.float-value{font-size:17px;font-weight:800;color:var(--color-text)}

/* ============================================
   核心功能
   ============================================ */
.features{padding:110px 0 90px;background:var(--color-white)}
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feature-card{
  background:var(--color-white);border-radius:var(--radius-lg);padding:40px 28px 32px;
  border:1px solid var(--color-border);transition:all var(--transition-slow);
  position:relative;overflow:hidden;cursor:default;
}
.feature-card::before{
  content:'';position:absolute;top:0;left:0;right:0;bottom:0;border-radius:var(--radius-lg);
  background:var(--gradient-primary);opacity:0;transition:opacity var(--transition-slow);z-index:0;
}
.feature-card::after{
  content:'';position:absolute;top:0;left:0;right:0;height:3px;
  background:var(--gradient-primary);border-radius:3px 3px 0 0;
  opacity:0;transform:scaleX(0);transition:all var(--transition-slow);z-index:1;
}
.feature-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-xl);border-color:transparent}
.feature-card:hover::before{opacity:1}
.feature-card:hover::after{opacity:1;transform:scaleX(1)}
.feature-card:hover .feature-icon{background:rgba(255,255,255,0.2)!important;transform:scale(1.1) rotate(-5deg)}
.feature-card:hover h3,.feature-card:hover p{color:#fff}
.feature-card:hover strong{color:rgba(255,255,255,0.95)}
.feature-icon{
  width:68px;height:68px;border-radius:var(--radius-md);background:var(--icon-bg);
  color:var(--icon-color);display:flex;align-items:center;justify-content:center;
  margin-bottom:22px;position:relative;z-index:2;transition:all var(--transition-slow);
}
.feature-card h3{font-size:18px;font-weight:700;margin-bottom:10px;position:relative;z-index:2;transition:color var(--transition-slow)}
.feature-card p{font-size:14px;color:var(--color-text-secondary);line-height:1.75;position:relative;z-index:2;transition:color var(--transition-slow)}
.feature-card strong{color:var(--color-primary);font-weight:700;transition:color var(--transition-slow)}

/* ============================================
   产品型号
   ============================================ */
.models{padding:110px 0;background:var(--color-bg);position:relative}
.models::before{
  content:'';position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(13,148,136,0.15),transparent);
}
.models-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.model-card{
  background:var(--color-white);border-radius:var(--radius-xl);overflow:hidden;
  border:1px solid var(--color-border);transition:all var(--transition-slow);
  box-shadow:var(--shadow-sm);
}
.model-card:hover{transform:translateY(-10px);box-shadow:var(--shadow-xl);border-color:transparent}
.model-image-wrapper{position:relative;padding:40px 28px 0;background:linear-gradient(180deg,#f0fdfa 0%,#ecfdf5 100%);overflow:hidden}
.model-image-wrapper::after{
  content:'';position:absolute;bottom:0;left:0;right:0;height:40px;
  background:linear-gradient(180deg,transparent,rgba(255,255,255,0.6));
}
.model-image{
  width:100%;height:320px;border-radius:var(--radius-lg) var(--radius-lg) 0 0;
  overflow:hidden;background:var(--color-white);display:flex;align-items:center;justify-content:center;
}
.model-image picture,.model-image img{width:100%;height:100%}
.model-image img{object-fit:contain;padding:20px}
.model-badge{
  position:absolute;top:56px;right:44px;
  background:var(--gradient-primary);color:#fff;font-size:12px;font-weight:700;
  padding:6px 16px;border-radius:20px;box-shadow:0 4px 14px rgba(13,148,136,0.35);z-index:2;
}
.model-badge-new{background:linear-gradient(135deg,#f59e0b,#d97706);box-shadow:0 4px 14px rgba(245,158,11,0.35)}
.model-badge-pro{background:linear-gradient(135deg,#6366f1,#4f46e5);box-shadow:0 4px 14px rgba(99,102,241,0.35)}
.model-info{padding:24px 28px 32px}
.model-name{font-size:21px;font-weight:800;margin-bottom:8px;color:var(--color-text);letter-spacing:-0.01em}
.model-desc{font-size:13px;color:var(--color-text-secondary);line-height:1.65;margin-bottom:16px}
.model-features{display:flex;flex-wrap:wrap;gap:8px}
.model-features li{font-size:12px;color:var(--color-primary-dark);background:var(--color-primary-bg);padding:5px 14px;border-radius:14px;font-weight:600}

/* ============================================
   数据展示
   ============================================ */
.data-showcase{padding:110px 0;background:var(--color-white);position:relative}
.data-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-bottom:36px}
.data-card{
  background:var(--color-white);border-radius:var(--radius-lg);padding:28px 24px;
  border:1px solid var(--color-border);transition:all var(--transition);box-shadow:var(--shadow-xs);
}
.data-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--color-primary-bg)}
.data-card-header{display:flex;align-items:center;gap:8px;margin-bottom:18px}
.data-icon{font-size:22px}
.data-name{font-size:13px;font-weight:700;color:var(--color-text);flex:1}
.data-unit{font-size:11px;color:var(--color-text-light);background:var(--color-bg);padding:3px 10px;border-radius:10px;font-weight:600}
.data-value{font-size:50px;font-weight:900;color:var(--color-text);line-height:1;margin-bottom:18px;letter-spacing:-0.04em}
.data-decimal{font-size:26px;font-weight:700;color:var(--color-text-light)}
.data-bar{height:6px;background:var(--color-bg);border-radius:3px;overflow:hidden;margin-bottom:10px}
.data-bar-fill{height:100%;background:var(--gradient-primary);border-radius:3px;transition:width 1.8s ease}
.data-bar-fill.good{background:linear-gradient(90deg,#22c55e,#16a34a)}
.data-bar-fill.humidity{background:linear-gradient(90deg,#0ea5e9,#0284c7)}
.data-range{font-size:12px;color:var(--color-text-light);font-weight:500}

.drink-stats{
  display:flex;align-items:center;justify-content:center;gap:48px;
  background:var(--gradient-primary);border-radius:var(--radius-xl);padding:36px 56px;
  color:#fff;box-shadow:0 12px 40px rgba(13,148,136,0.3);
}
.drink-stat-card{text-align:center}
.drink-stat-num{font-size:44px;font-weight:900;margin-bottom:6px;letter-spacing:-0.02em}
.drink-stat-num span{font-size:18px;font-weight:600;opacity:0.8}
.drink-stat-label{font-size:14px;opacity:0.9;font-weight:500}
.drink-stat-divider{width:1px;height:52px;background:rgba(255,255,255,0.25)}

/* ============================================
   产品亮点
   ============================================ */
.highlights{padding:110px 0;background:var(--color-bg)}
.highlight-row{display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:center;margin-bottom:100px}
.highlight-row:last-child{margin-bottom:0}
.highlight-row.reverse{direction:rtl}
.highlight-row.reverse .highlight-text,.highlight-row.reverse .highlight-visual{direction:ltr}
.highlight-num{
  display:block;font-size:64px;font-weight:900;
  background:linear-gradient(135deg,var(--color-primary-bg),var(--color-primary));
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
  line-height:1.1;margin-bottom:4px;letter-spacing:-0.04em;
}
.highlight-text h3{font-size:28px;font-weight:800;margin-bottom:16px;letter-spacing:-0.02em}
.highlight-text p{font-size:15px;color:var(--color-text-secondary);line-height:1.85;margin-bottom:22px}
.highlight-text strong{color:var(--color-text);font-weight:700}
.highlight-list{display:flex;flex-direction:column;gap:14px}
.highlight-list li{font-size:14px;color:var(--color-text-secondary);padding-left:26px;position:relative;line-height:1.5}
.highlight-list li::before{
  content:'';position:absolute;left:0;top:8px;width:8px;height:8px;
  border-radius:50%;background:var(--color-primary);box-shadow:0 0 0 4px var(--color-primary-bg);
}

/* 图表模拟 */
.chart-mockup{background:var(--color-white);border-radius:var(--radius-xl);padding:36px;border:1px solid var(--color-border);box-shadow:var(--shadow-md)}
.chart-header{font-size:16px;font-weight:700;margin-bottom:32px}
.chart-bars{display:flex;align-items:flex-end;gap:18px;height:180px}
.chart-bar{flex:1;height:var(--h);background:var(--gradient-primary);border-radius:10px 10px 0 0;position:relative;transition:height 1s ease;min-height:24px;opacity:0.85}
.chart-bar:hover{opacity:1}
.chart-bar span{position:absolute;bottom:-26px;left:50%;transform:translateX(-50%);font-size:11px;color:var(--color-text-light);font-weight:500;white-space:nowrap}

/* 预警模拟 */
.alert-mockup{display:flex;flex-direction:column;gap:14px}
.alert-card{display:flex;align-items:center;gap:14px;padding:18px 22px;border-radius:var(--radius-md);background:var(--color-white);border:1px solid var(--color-border);box-shadow:var(--shadow-xs);transition:all var(--transition)}
.alert-card:hover{box-shadow:var(--shadow-md);transform:translateX(4px)}
.alert-card.alert-critical{border-left:4px solid #ef4444}
.alert-card.alert-warning{border-left:4px solid #f59e0b}
.alert-card.alert-info{border-left:4px solid #0ea5e9}
.alert-icon{font-size:30px;flex-shrink:0}
.alert-title{font-size:14px;font-weight:700;color:var(--color-text);margin-bottom:4px}
.alert-desc{font-size:13px;color:var(--color-text-secondary)}

/* 配网模拟 */
.pairing-mockup{background:var(--color-white);border-radius:var(--radius-xl);padding:52px 48px;border:1px solid var(--color-border);box-shadow:var(--shadow-md)}
.pairing-steps{display:flex;align-items:center;justify-content:center}
.pairing-step{display:flex;flex-direction:column;align-items:center;gap:8px}
.step-circle{
  width:52px;height:52px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:17px;border:3px solid var(--color-border);background:var(--color-white);color:var(--color-text-light);
  transition:all var(--transition);
}
.pairing-step.done .step-circle{background:#22c55e;border-color:#22c55e;color:#fff;box-shadow:0 0 0 6px rgba(34,197,94,0.15)}
.pairing-step.active .step-circle{border-color:var(--color-primary);color:var(--color-primary);animation:pulse 2s ease-in-out infinite}
@keyframes pulse{0%,100%{box-shadow:0 0 0 0 rgba(13,148,136,0.4)}50%{box-shadow:0 0 0 16px rgba(13,148,136,0)}}
.pairing-line{width:70px;height:2px;background:var(--color-border);margin-bottom:26px}
.pairing-line.done{background:#22c55e}
.pairing-step span{font-size:13px;color:var(--color-text-secondary);font-weight:600}

/* ============================================
   技术规格
   ============================================ */
.specs{padding:110px 0;background:var(--color-white)}
.specs-grid{display:grid;grid-template-columns:repeat(2,1fr);background:var(--color-bg);border-radius:var(--radius-xl);overflow:hidden;border:1px solid var(--color-border);box-shadow:var(--shadow-sm)}
.spec-item{display:flex;align-items:center;padding:22px 36px;gap:16px;border-bottom:1px solid var(--color-border);transition:all var(--transition)}
.spec-item:hover{background:var(--color-primary-bg2)}
.spec-item:nth-child(odd){border-right:1px solid var(--color-border)}
.spec-item:nth-last-child(-n+2){border-bottom:none}
.spec-label{font-size:13px;color:var(--color-text-light);min-width:96px;flex-shrink:0;font-weight:500}
.spec-value{font-size:14px;font-weight:700;color:var(--color-text)}

/* ============================================
   APP下载
   ============================================ */
.download{padding:110px 0;background:var(--color-bg)}
.download-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.download-card{
  text-align:center;padding:44px 24px 36px;background:var(--color-white);
  border-radius:var(--radius-xl);border:1px solid var(--color-border);
  transition:all var(--transition-slow);box-shadow:var(--shadow-xs);
}
.download-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:var(--color-primary-bg)}
.download-qr-wrapper{display:flex;justify-content:center;margin-bottom:22px}
.download-qr{
  width:168px;height:168px;padding:12px;background:var(--color-white);
  border-radius:var(--radius-md);box-shadow:var(--shadow-sm);border:1px solid var(--color-border);
  display:flex;align-items:center;justify-content:center;
}
.download-qr img{width:100%;height:100%;object-fit:contain;display:block}
.download-card h4{font-size:17px;font-weight:700;margin-bottom:6px}
.download-card p{font-size:13px;color:var(--color-text-light)}

/* ============================================
   底部
   ============================================ */
.footer{background:#0f172a;color:#94a3b8;padding:64px 0 28px}
.footer-container{max-width:var(--max-width);margin:0 auto;padding:0 24px}
.footer-top{display:flex;justify-content:space-between;margin-bottom:44px;gap:48px}
.footer-brand{max-width:280px}
.footer-logo{font-size:22px;font-weight:800;color:#fff;display:block;margin-bottom:14px;letter-spacing:-0.02em}
.footer-brand p{font-size:14px;line-height:1.8}
.footer-links{display:flex;gap:72px}
.footer-col h4{font-size:12px;font-weight:700;color:#fff;text-transform:uppercase;letter-spacing:0.08em;margin-bottom:18px}
.footer-col a{display:block;font-size:14px;color:#64748b;margin-bottom:12px;transition:all var(--transition)}
.footer-col a:hover{color:#fff;transform:translateX(2px)}
.footer-bottom{border-top:1px solid rgba(255,255,255,0.06);padding-top:24px;display:flex;justify-content:space-between;align-items:center;font-size:13px;color:#475569}

/* ============================================
   动画
   ============================================ */
[data-animate]{opacity:0;transform:translateY(40px);transition:all 0.7s cubic-bezier(0.22,0.61,0.36,1)}
[data-animate].animated{opacity:1;transform:translateY(0)}
.feature-card:nth-child(1){transition-delay:0s}
.feature-card:nth-child(2){transition-delay:0.08s}
.feature-card:nth-child(3){transition-delay:0.16s}
.feature-card:nth-child(4){transition-delay:0.24s}
.feature-card:nth-child(5){transition-delay:0.32s}
.feature-card:nth-child(6){transition-delay:0.4s}

/* 页面固定宽度 1200px，所有设备显示一致 */
body{min-width:1200px;overflow-x:auto}