/* ============================================================
   Precision Mold - 全局样式表 v9
   设计语言参考：Apple.com
   色彩体系：#ffffff / #f5f5f7 / #1d1d1f + #1A3ECF 品牌强调
   过渡曲线：Apple-style cubic-bezier
   ============================================================ */

:root {
    /* Brand (唯一强调色) */
    --brand: #1A3ECF;
    --brand-light: #3D5CE5;
    --brand-dark: #0D2A8F;
    --brand-glow: rgba(26,62,207,0.08);
    /* Apple 风格色彩：白 / 浅灰 / 深空灰 */
    --gray-900: #1d1d1f;
    --gray-800: #2c2c2e;
    --gray-600: #6e6e73;
    --gray-500: #86868b;
    --gray-400: #a1a1a6;
    --gray-300: #d2d2d7;
    --gray-200: #e8e8ed;
    --gray-100: #f5f5f7;
    --white: #ffffff;
    --border: #d2d2d7;
    --border-light: #e8e8ed;
    --text-primary: #1d1d1f;
    --text-secondary: #6e6e73;
    --text-muted: #86868b;
    --text-inverse: #ffffff;
    /* 弥散阴影（Apple 风格） */
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
    --shadow-md: 0 4px 24px rgba(0,0,0,0.06);
    --shadow-lg: 0 12px 40px rgba(0,0,0,0.1);
    --shadow-xl: 0 20px 60px rgba(0,0,0,0.12);
    /* 卡片圆角 */
    --radius-sm: 6px;
    --radius: 10px;
    --radius-lg: 18px;
    --radius-xl: 24px;
    /* Apple 过渡曲线（流畅快速） */
    --transition: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --transition-slow: 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --max-width: 1200px;
    --header-height: 70px;
    /* 系统字体栈（Apple SF 优先） */
    --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro SC", "SF Pro Display", "SF Pro Text", "PingFang SC", "Helvetica Neue", "Microsoft YaHei", Arial, sans-serif;
    --font-mono: "SF Mono", ui-monospace, "Fira Code", "Consolas", "Monaco", monospace;
}

/* AOS 基础样式（data-aos 属性驱动） */
[data-aos] { opacity: 0; transition-property: opacity, transform; transition-duration: 0.8s; transition-timing-function: cubic-bezier(0.25, 0.46, 0.45, 0.94); will-change: opacity, transform; }
[data-aos="fade-up"] { transform: translate3d(0, 40px, 0); }
[data-aos="fade-up"].aos-animate { opacity: 1; transform: translateZ(0); }
[data-aos="fade-down"] { transform: translate3d(0, -40px, 0); }
[data-aos="fade-down"].aos-animate { opacity: 1; transform: translateZ(0); }
[data-aos="fade"] { transform: translateZ(0); }
[data-aos="fade"].aos-animate { opacity: 1; }
[data-aos="zoom-in"] { transform: scale(0.92); }
[data-aos="zoom-in"].aos-animate { opacity: 1; transform: scale(1); }
[data-aos-delay] { transition-delay: attr(data-aos-delay ms, 0); }

*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; text-rendering: optimizeLegibility; }
body {
    font-family: var(--font-sans);
    font-size: 17px; line-height: 1.73; color: var(--text-primary);
    background: var(--white); overflow-x: hidden;
    font-weight: 400;
}
.container { width:100%; max-width:var(--max-width); margin:0 auto; padding:0 40px; }
a { color:var(--gray-900); text-decoration:none; transition:color var(--transition); }
a:hover { color:var(--brand); }
img { max-width:100%; height:auto; display:block; }
ul, ol { list-style:none; }

/* === Typography（Apple 风格粗标题 / 轻正文） === */
h1,h2,h3,h4,h5,h6 { line-height:1.25; color:var(--gray-900); letter-spacing: -0.02em; }
h1 { font-size: clamp(2.2rem, 4vw, 3.5rem); font-weight:700; margin-bottom:1.25rem; }
h2 { font-size: clamp(1.9rem, 3.2vw, 2.75rem); font-weight:700; margin-bottom:0.75rem; }
h3 { font-size:1.5rem; font-weight:600; margin-bottom:0.5rem; letter-spacing: -0.01em; }
h4 { font-size:1.15rem; font-weight:600; margin-bottom:0.5rem; letter-spacing: -0.01em; }
p { font-weight:400; line-height: 1.75; color: var(--text-secondary); }

/* Numbers in monospace */
.stat-number, .data-number, .capacity-number, .metric-value {
    font-family: var(--font-mono);
    font-variant-numeric: tabular-nums;
}

/* === Utility（Apple 风格大量留白） === */
.text-center { text-align:center; }
.bg-light { background:var(--gray-100); }
.section-padding { padding: 120px 0; }
.section-padding-lg { padding: 160px 0; }
.result-unit { font-size:0.7em; }
.adv-icon { font-size:24px; color:var(--brand); }

/* === Buttons（Apple 风格：细腻悬浮 + 轻按缩放） === */
.btn {
    display:inline-flex; align-items:center; justify-content:center; gap:8px;
    padding:14px 36px; font-size:0.95rem; font-weight:500; letter-spacing: 0.01em;
    border-radius:980px; border:1.5px solid transparent;
    cursor:pointer; transition:transform var(--transition), box-shadow var(--transition), background var(--transition), color var(--transition), border-color var(--transition);
    text-decoration:none; white-space:nowrap;
}
.btn-primary { background:var(--brand); color:var(--white); border-color:var(--brand); }
.btn-primary:hover { background:var(--brand-dark); border-color:var(--brand-dark); color:var(--white); transform:translateY(-4px); box-shadow:0 10px 28px rgba(26,62,207,0.28); }
.btn-primary:active { transform:scale(0.98); box-shadow:0 2px 8px rgba(26,62,207,0.2); }
.btn-secondary { background:var(--gray-900); color:var(--white); border-color:var(--gray-900); }
.btn-secondary:hover { background:#000; color:var(--white); transform:translateY(-4px); box-shadow:0 10px 28px rgba(0,0,0,0.18); }
.btn-secondary:active { transform:scale(0.98); }
.btn-outline { background:transparent; color:var(--gray-900); border-color:var(--border); }
.btn-outline:hover { background:var(--gray-900); color:var(--white); border-color:var(--gray-900); transform:translateY(-4px); box-shadow:0 10px 28px rgba(0,0,0,0.12); }
.btn-outline:active { transform:scale(0.98); }
.btn-light { background:var(--white); color:var(--gray-900); border-color:var(--border); }
.btn-light:hover { background:var(--gray-100); color:var(--gray-900); transform:translateY(-4px); box-shadow:0 10px 28px rgba(0,0,0,0.08); }
.btn-light:active { transform:scale(0.98); }
.btn-lg { padding:18px 44px; font-size:1.05rem; border-radius:980px; }
.btn-sm { padding:10px 20px; font-size:0.85rem; }
.btn-block { display:flex; width:100%; }

/* === Header（Apple 风格毛玻璃） === */
.site-header {
    position:fixed; top:0; left:0; right:0; z-index:1000;
    background:#ffffff;
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    backdrop-filter: saturate(180%) blur(20px);
    border-bottom:1px solid rgba(0,0,0,0.06);
    height:var(--header-height); transition:box-shadow var(--transition), background var(--transition), border-color var(--transition);
}
.site-header.scrolled {
    background:#ffffff;
    border-bottom:1px solid rgba(0,0,0,0.08);
    box-shadow: 0 1px 0 rgba(0,0,0,0.04), 0 8px 30px rgba(0,0,0,0.04);
}
.home-page .site-header:not(.scrolled) {
    background: #ffffff;
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid rgba(0,0,0,0.06);
}
.home-page .site-header:not(.scrolled) .logo-name { color: var(--gray-900); }
.home-page .site-header:not(.scrolled) .logo-tagline { color: var(--gray-500); }
.home-page .site-header:not(.scrolled) .nav-link { color: var(--text-secondary); }
.home-page .site-header:not(.scrolled) .nav-link:hover { color: var(--gray-900); background: rgba(0,0,0,0.03); }
.home-page .site-header:not(.scrolled) .nav-link.active { color: var(--brand); background: rgba(26,62,207,0.06); }
.home-page .site-header:not(.scrolled) .lang-switch-btn { color: var(--gray-600); border-color: var(--border); }
.home-page .site-header:not(.scrolled) .lang-switch-btn:hover { background: var(--gray-900); color: var(--white); border-color: var(--gray-900); }
.home-page .site-header:not(.scrolled) .mobile-menu-btn span { background: var(--gray-900); }
.header-inner { display:flex; align-items:center; justify-content:space-between; height:var(--header-height); flex-wrap:nowrap; }

/* Logo */
.logo { display:flex; align-items:center; gap:10px; text-decoration:none; flex-shrink:0; }
.logo-icon svg { display:block; width:32px; height:32px; }
.logo-text { display:flex; flex-direction:column; }
.logo-name { font-size:1.1rem; font-weight:400; color:var(--gray-900); line-height:1.2; white-space:nowrap; letter-spacing: -0.01em; }
.logo-tagline { font-size:0.65rem; color:var(--gray-500); letter-spacing:0.5px; white-space:nowrap; }

/* ============================================
   Navigation - PC端下拉菜单
   ============================================ */
.main-nav .nav-list { display:flex; flex-direction:row; flex-wrap:nowrap; align-items:center; gap:0; list-style:none; margin:0; padding:0; }
.nav-item { position:relative; list-style:none; }
.nav-item > a, .nav-item > .dropdown-toggle { display:flex; align-items:center; gap:4px; padding:10px 22px; color:var(--gray-600); font-size:0.925rem; font-weight:500; text-decoration:none; white-space:nowrap; cursor:pointer; border-radius:var(--radius-sm); transition:color 0.2s ease,background 0.2s ease; }
.nav-item > a:hover, .nav-item > .dropdown-toggle:hover { color:var(--brand); background:rgba(26,62,207,0.05); }
.nav-item > a.active, .nav-item > .dropdown-toggle.active { color:var(--brand); background:rgba(26,62,207,0.06); font-weight:500; }
.nav-link { display:block; padding:10px 22px; font-size:0.925rem; font-weight:500; color:var(--gray-600); border-radius:var(--radius-sm); transition:color 0.2s ease,background 0.2s ease; white-space:nowrap; }
.nav-link:hover { color:var(--brand); background:rgba(26,62,207,0.05); }
.nav-link.active { background:rgba(26,62,207,0.06); color:var(--brand); font-weight:500; }
.dropdown-arrow { display:inline-block; width:0; height:0; border-left:4px solid transparent; border-right:4px solid transparent; border-top:5px solid currentColor; margin-top:2px; flex-shrink:0; transition:transform 0.3s ease; }
.nav-item.dropdown::after { content:''; position:absolute; top:100%; left:0; right:0; height:8px; z-index:9998; }
.nav-item.dropdown:hover > .dropdown-toggle .dropdown-arrow,
.nav-item.dropdown.dropdown-active > .dropdown-toggle .dropdown-arrow { transform:rotate(180deg); }
.nav-dropdown { display:block; position:absolute; top:calc(100% + 8px); left:50%; transform:translateX(-50%); min-width:200px; background:var(--white); box-shadow:0 12px 40px rgba(0,0,0,0.1); border-radius:var(--radius); padding:10px 0; z-index:9999; border:1px solid rgba(0,0,0,0.04); opacity:0; visibility:hidden; pointer-events:none; transition:opacity 0.25s ease,visibility 0.25s; }
.nav-dropdown::before { content:''; position:absolute; top:-6px; left:50%; transform:translateX(-50%) rotate(45deg); width:12px; height:12px; background:var(--white); border-top:1px solid rgba(0,0,0,0.04); border-left:1px solid rgba(0,0,0,0.04); border-radius:2px 0 0 0; }
.nav-item.dropdown:hover > .nav-dropdown,
.nav-item.dropdown.dropdown-active > .nav-dropdown { opacity:1; visibility:visible; pointer-events:auto; }
.nav-dropdown-item { display:block; padding:10px 24px; color:var(--gray-600); text-decoration:none; font-size:0.875rem; font-weight:400; white-space:nowrap; transition:background 0.15s ease,color 0.15s ease; }
.nav-dropdown-item:hover { background:rgba(26,62,207,0.06); color:var(--brand); }
.nav-dropdown-item.active { background:rgba(26,62,207,0.08); color:var(--brand); font-weight:500; }

/* Header Actions */
.header-actions { display:flex; align-items:center; gap:8px; flex-shrink:0; }
.lang-switch-btn {
    display:inline-flex; align-items:center; padding:5px 10px;
    font-size:0.75rem; font-weight:400; color:var(--gray-600);
    border:1.5px solid var(--border); border-radius:var(--radius-sm);
    transition:all var(--transition); white-space:nowrap;
}
.lang-switch-btn:hover { background:var(--gray-900); color:var(--white); border-color:var(--gray-900); }
.header-contact-btn {
    display:inline-flex; align-items:center; gap:4px; padding:7px 14px;
    font-size:0.8rem; font-weight:500; background:var(--gray-900); color:var(--white);
    border-radius:var(--radius-sm); transition:all var(--transition); white-space:nowrap;
}
.header-contact-btn:hover { background:var(--gray-800); color:var(--white); transform:translateY(-1px); box-shadow:0 4px 12px rgba(0,0,0,0.1); }

/* Mobile Menu Button */
.mobile-menu-btn { display:none; flex-direction:column; gap:5px; width:28px; padding:0; background:none; border:none; cursor:pointer; }
.mobile-menu-btn span { display:block; height:2px; background:var(--gray-900); border-radius:2px; transition:all var(--transition); }

/* Mobile Nav Overlay */
.mobile-nav-overlay { display:none; position:fixed; inset:0; z-index:1100; background:rgba(0,0,0,0.4); }
.mobile-nav-overlay.active { display:block; }
.mobile-nav {
    position:fixed; top:0; right:0; width:300px; height:100%;
    background:var(--white); padding:24px; overflow-y:auto;
    transform:translateX(100%); transition:transform var(--transition);
}
.mobile-nav-overlay.active .mobile-nav { transform:translateX(0); }
.mobile-nav-header { display:flex; justify-content:space-between; align-items:center; margin-bottom:24px; padding-bottom:16px; border-bottom:1px solid var(--border); }
.mobile-nav-title { font-weight:400; font-size:1.1rem; }
.mobile-nav-close { background:none; border:none; font-size:1.5rem; cursor:pointer; color:var(--gray-600); }
.mobile-nav-list li { border-bottom:1px solid var(--border); }
.mobile-nav-list a { display:block; padding:14px 0; color:var(--text-primary); font-weight:400; }
.mobile-nav-footer { margin-top:24px; }

/* ============================================
   Breadcrumb
   ============================================ */
.breadcrumb-wrapper {
    padding-top: calc(var(--header-height) + 12px);
    padding-bottom: 16px;
    background: transparent;
}
.breadcrumb { margin: 0; }
.breadcrumb ol {
    display: flex; flex-wrap: wrap; gap: 0; align-items: center;
    font-size: 0.875rem; color: var(--text-muted); padding: 0; margin: 0;
}
.breadcrumb li { display: flex; align-items: center; }
.breadcrumb li:not(:last-child)::after {
    content: '\203A'; margin: 0 8px; color: #94a3b8;
    font-size: 1rem; font-weight: 400;
}
.breadcrumb a { color: var(--gray-900); text-decoration: none; transition: color var(--transition); }
.breadcrumb a:hover { color: var(--brand); }
.breadcrumb [aria-current="page"] { color: var(--brand); font-weight: 500; }

/* Breadcrumb 深色背景模式 */
.breadcrumb-dark {
    background: linear-gradient(135deg, var(--gray-800) 0%, var(--gray-900) 50%, var(--gray-800) 100%);
}
.breadcrumb-dark .breadcrumb a { color: rgba(255,255,255,0.85); }
.breadcrumb-dark .breadcrumb a:hover { color: var(--brand-light); }
.breadcrumb-dark .breadcrumb [aria-current="page"] { color: var(--brand-light); font-weight: 500; }
.breadcrumb-dark .breadcrumb li:not(:last-child)::after { color: rgba(255,255,255,0.5); }

/* ============================================
   Section Common（Apple 风格：无下划线，留白引导视觉）
   ============================================ */
.section-header { text-align:center; margin-bottom:72px; }
.section-header .section-title {
    font-size: clamp(1.9rem, 3vw, 2.5rem); font-weight: 700; color: var(--gray-900);
    margin-bottom: 0; letter-spacing: -0.02em;
}
.section-subtitle {
    color: var(--text-secondary); margin-top: 16px;
    max-width: 680px; margin-left: auto; margin-right: auto;
    font-size: 1.05rem; line-height: 1.7;
}
.section-footer { margin-top:64px; text-align:center; }

/* ============================================
   Page Banner / Page Hero (通用页面大Banner)
   ============================================ */
.page-banner {
    padding: 100px 0 60px;
    text-align: center;
    position: relative;
    overflow: hidden;
    background:
        linear-gradient(135deg, rgba(26,26,26,0.88) 0%, rgba(26,26,26,0.92) 50%, rgba(45,45,45,0.88) 100%),
        url('https://images.unsplash.com/photo-1497366216548-37526070297c?w=1920') center/cover no-repeat;
}
.page-banner::before {
    content: ''; position: absolute; inset: 0;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(26,62,207,0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(26,62,207,0.06) 0%, transparent 40%);
    pointer-events: none;
}
.page-banner .breadcrumb-wrapper { padding-top: 0; }
.page-banner-dark { background: linear-gradient(135deg, rgba(26,26,26,0.88) 0%, rgba(26,26,26,0.92) 50%, rgba(45,45,45,0.88) 100%), url('https://images.unsplash.com/photo-1497366216548-37526070297c?w=1920') center/cover no-repeat; }
.page-title {
    font-size: 2.5rem; font-weight: 700; color: var(--white);
    margin-bottom: 0; position: relative; z-index: 1; letter-spacing: -0.01em;
}

.page-hero {
    padding: 80px 0 80px;
    text-align: center;
    position: relative;
    overflow: hidden;
    background:
        linear-gradient(135deg, rgba(26,26,26,0.88) 0%, rgba(26,26,26,0.92) 50%, rgba(45,45,45,0.88) 100%),
        url('https://images.unsplash.com/photo-1497366216548-37526070297c?w=1920') center/cover no-repeat;
}
.page-hero::before {
    content: ''; position: absolute; inset: 0;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(26,62,207,0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(26,62,207,0.06) 0%, transparent 40%);
    pointer-events: none;
    animation: bannerGlow 8s ease-in-out infinite alternate;
}
@keyframes bannerGlow { 0% { opacity: 0.8; } 100% { opacity: 1; } }
.page-hero::after {
    content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15), transparent);
}
.page-hero-content { position: relative; z-index: 1; }
.page-hero-title {
    font-size: 2.5rem; font-weight: 700; color: var(--white);
    margin-bottom: 20px; line-height: 1.25; letter-spacing: -0.01em;
}
.page-hero-subtitle {
    font-size: 1.1rem; color: rgba(255,255,255,0.72);
    margin-bottom: 28px; max-width: 700px; margin-left: auto; margin-right: auto;
    line-height: 1.7;
}

/* ============================================
   Home Page - Hero Banner（Apple 沉浸式全屏）
   ============================================ */
.hero-banner {
    position:relative; min-height:92vh; display:flex; align-items:center;
    background:
        linear-gradient(135deg, rgba(29,29,31,0.9) 0%, rgba(29,29,31,0.92) 50%, rgba(44,44,46,0.88) 100%),
        url('https://images.unsplash.com/photo-1497366216548-37526070297c?w=1920') center/cover no-repeat;
    overflow:hidden; margin-top:var(--header-height);
}
.hero-banner::before {
    content: ''; position: absolute; inset: 0;
    background:
        radial-gradient(ellipse at 30% 40%, rgba(26,62,207,0.14) 0%, transparent 55%),
        radial-gradient(ellipse at 75% 65%, rgba(255,255,255,0.05) 0%, transparent 45%);
    pointer-events: none; z-index: 1;
    animation: bannerGlow 9s ease-in-out infinite alternate;
}
.hero-content { position:relative; z-index:2; max-width:760px; padding:120px 0; }
.hero-badge {
    display:inline-block; padding:7px 18px; font-size:0.78rem; font-weight:500;
    color:rgba(255,255,255,0.9); background:rgba(255,255,255,0.08);
    border-radius:980px; margin-bottom:24px; letter-spacing:0.3px;
    -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
}
.hero-title { font-size: clamp(2.4rem, 5vw, 4rem); font-weight:700; color:var(--white); margin-bottom:1.25rem; line-height:1.12; letter-spacing: -0.03em; }
.hero-subtitle { font-size: clamp(1rem, 1.5vw, 1.25rem); color:rgba(255,255,255,0.78); margin-bottom:2rem; line-height:1.7; max-width:600px; }
.hero-cta { margin-top:0.5rem; display:flex; align-items:center; flex-wrap:wrap; gap:12px; }
.hero-cta .btn-outline { color:var(--white); border-color:rgba(255,255,255,0.4); }
.hero-cta .btn-outline:hover { background:var(--white); color:var(--gray-900); border-color:var(--white); }

/* Hero Stats */
.hero-stats { display:flex; gap:48px; margin-top:40px; padding-top:32px; border-top:1px solid rgba(255,255,255,0.12); }
.hero-stat-item { flex-shrink:0; }
.hero-stat-value { font-size:2rem; font-weight:700; color:var(--white); line-height:1.2; font-family:var(--font-mono); }
.hero-stat-label { font-size:0.8rem; color:rgba(255,255,255,0.55); margin-top:4px; }

/* Hero Decorative */
.hero-bg-grid {
    position:absolute; inset:0; z-index:0; opacity:0.04;
    background-image: linear-gradient(rgba(255,255,255,0.5) 1px, transparent 1px),
                      linear-gradient(90deg, rgba(255,255,255,0.5) 1px, transparent 1px);
    background-size: 60px 60px;
}
.hero-bg-circuit {
    position:absolute; top:0; right:0; width:50%; height:100%; z-index:0; opacity:0.06;
    background: radial-gradient(circle at 70% 30%, rgba(26,62,207,0.3) 0%, transparent 60%),
                radial-gradient(circle at 80% 70%, rgba(26,62,207,0.2) 0%, transparent 50%);
}
.hero-geo-1 { position:absolute; top:15%; right:25%; width:200px; height:200px; border:1px solid rgba(255,255,255,0.06); border-radius:50%; z-index:0; }
.hero-geo-2 { position:absolute; bottom:20%; right:10%; width:300px; height:300px; border:1px solid rgba(255,255,255,0.04); border-radius:50%; z-index:0; }
.hero-geo-3 { position:absolute; top:40%; right:35%; width:120px; height:120px; border:1px solid rgba(255,255,255,0.05); border-radius:50%; z-index:0; }
.hero-visual { position:absolute; right:5%; top:50%; transform:translateY(-50%); z-index:1; width:400px; height:400px; }
.hero-visual-shape {
    width:100%; height:100%; border:1px solid rgba(255,255,255,0.08); border-radius:24px;
    background:rgba(255,255,255,0.02); backdrop-filter:blur(4px);
}

/* ============================================
   Home Page - Advantages（Apple 风格：无多余边框，留白 + 悬浮）
   ============================================ */
.advantages-section { padding: 120px 0; background: var(--gray-100); }
.advantages-grid { display:grid; grid-template-columns:repeat(4, 1fr); gap:20px; }
.advantage-card {
    background:var(--white); padding:44px 28px; border-radius:var(--radius-lg);
    text-align:center; transition:transform var(--transition-slow), box-shadow var(--transition-slow);
    box-shadow: var(--shadow-sm);
}
.advantage-card:hover { transform:translateY(-8px); box-shadow: var(--shadow-lg); }
.advantage-icon { width:100px; height:100px; margin:0 auto 22px; display:flex; align-items:center; justify-content:center; background:var(--brand-glow); border-radius:50%; overflow:hidden; transition:background var(--transition), transform var(--transition); }
.advantage-card:hover .advantage-icon { background:rgba(26,62,207,0.12); transform:scale(1.06); }
.advantage-title { font-size:1.1rem; font-weight:700; margin-bottom:10px; color:var(--gray-900); letter-spacing:-0.01em; }
.advantage-desc { color:var(--text-secondary); font-size:0.92rem; line-height:1.7; }
.advantage-icon img { width:100px; height:100px; object-fit:contain; display:block; margin:0 auto; }

/* ============================================
   Home Page - Products Grid（Apple Tile 风格）
   ============================================ */
.products-grid { display:grid; grid-template-columns:repeat(3, 1fr); gap:24px; }
.product-card {
    background:var(--white); border-radius:var(--radius-lg); overflow:hidden;
    transition:transform var(--transition-slow), box-shadow var(--transition-slow);
    display: flex; flex-direction: column; height: 100%;
    box-shadow: var(--shadow-sm);
}
.product-card:hover { transform:translateY(-8px); box-shadow: var(--shadow-xl); }
.product-card-image { display:block; width:100%; height:260px; overflow:hidden; background:var(--gray-100); flex-shrink: 0; position:relative; }
.product-card-image img { width:100%; height:100%; object-fit:cover; transition:transform var(--transition-slow); }
.product-card:hover .product-card-image img { transform:scale(1.06); }
.product-card-tech {
    position:absolute; bottom:0; left:0; right:0; padding:12px 20px;
    background:linear-gradient(transparent, rgba(0,0,0,0.62));
    display:flex; gap:16px; font-size:0.72rem; color:rgba(255,255,255,0.82);
}
.tech-value { font-weight:700; color:var(--white); }
.product-card-body { padding:24px; flex: 1; display: flex; flex-direction: column; }
.product-card-body .btn { margin-top: auto; align-self: flex-start; }
.product-card-title { font-size:1.15rem; margin-bottom:8px; font-weight:600; letter-spacing:-0.01em; }
.product-card-title a { color:var(--gray-900); transition:color var(--transition); }
.product-card-title a:hover { color:var(--brand); }
.product-card-desc { color:var(--text-secondary); font-size:0.9rem; line-height:1.7; display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; overflow:hidden; margin-bottom:16px; }

/* ============================================
   Home Page - Cases Grid（Apple 风格大卡片）
   ============================================ */
.cases-grid { display:grid; grid-template-columns:repeat(2, 1fr); gap:28px; }
.case-card {
    background:var(--white); border-radius:var(--radius-lg); overflow:hidden;
    transition:transform var(--transition-slow), box-shadow var(--transition-slow);
    display: flex; flex-direction: column; height: 100%;
    box-shadow: var(--shadow-sm);
}
.case-card:hover { transform:translateY(-8px); box-shadow: var(--shadow-xl); }
.case-card-image { display:block; width:100%; height:280px; overflow:hidden; background:var(--gray-100); flex-shrink: 0; }
.case-card-image img { width:100%; height:100%; object-fit:cover; transition:transform var(--transition-slow); }
.case-card:hover .case-card-image img { transform:scale(1.06); }
.case-card-body { padding:28px; flex: 1; display: flex; flex-direction: column; }
.case-card-body .btn { margin-top: auto; align-self: flex-start; }
.case-card-title { font-size:1.2rem; margin-bottom:10px; font-weight:600; letter-spacing:-0.01em; }
.case-card-title a { color:var(--gray-900); transition:color var(--transition); }
.case-card-title a:hover { color:var(--brand); }
.case-card-meta { font-size:0.8rem; color:var(--text-muted); margin-bottom:10px; }
.case-card-desc { font-size:0.92rem; color:var(--text-secondary); margin-bottom:18px; line-height:1.7; }

/* Case Result */
.case-result { display:flex; gap:24px; margin-bottom:16px; padding:12px 16px; background:var(--gray-100); border-radius:var(--radius-sm); }
.case-result-item { text-align:center; }
.case-result-value { font-size:1.25rem; font-weight:700; color:var(--brand); font-family:var(--font-mono); line-height:1.2; }
.case-result-label { font-size:0.7rem; color:var(--text-muted); }

/* ============================================
   Home Page - CTA（Apple 深空灰大区块）
   ============================================ */
.home-cta-section { background: #2c2c2e; padding: 140px 0; text-align:center; position: relative; overflow: hidden; }
.home-cta-section::before {
    content: ''; position: absolute; inset: 0;
    background: radial-gradient(ellipse at 50% 0%, rgba(26,62,207,0.12) 0%, transparent 55%);
    pointer-events: none;
}
.home-cta-section .cta-title { color:var(--white); font-size: clamp(2rem, 3vw, 2.75rem); margin-bottom:16px; font-weight:700; letter-spacing: -0.02em; position: relative; z-index: 1; }
.home-cta-section .cta-text { color:rgba(255,255,255,0.72); font-size:1.1rem; margin-bottom:36px; max-width:620px; margin-left:auto; margin-right:auto; line-height:1.7; position: relative; z-index: 1; }
.home-cta-section .btn { position: relative; z-index: 1; }

/* CTA Section (footer通用) */
.cta-section {
    padding: 140px 0; text-align: center;
    background: #1d1d1f;
    position: relative; overflow: hidden;
}
.cta-section::before {
    content: ''; position: absolute; inset: 0;
    background: radial-gradient(ellipse at 50% 0%, rgba(26,62,207,0.12) 0%, transparent 55%);
    pointer-events: none;
}
.cta-section h2 { color: var(--white); font-size: clamp(2rem, 3vw, 2.75rem); font-weight: 700; margin-bottom: 16px; position: relative; z-index: 1; letter-spacing: -0.02em; }
.cta-section p { color: rgba(255,255,255,0.72); font-size: 1.1rem; margin-bottom: 36px; max-width: 700px; margin-left: auto; margin-right: auto; line-height: 1.7; position: relative; z-index: 1; }
.cta-section .btn { position: relative; z-index: 1; }

/* ============================================
   About Page（Apple 风格大量留白）
   ============================================ */
.about-intro { padding: 120px 0; }
.about-intro-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.about-intro-text .section-header { text-align: left; margin-bottom: 28px; }
.about-intro-text .section-header .section-title { font-size: clamp(1.8rem, 2.5vw, 2.25rem); font-weight: 700; }
.about-intro-text .section-subtitle { margin-left: 0; margin-right: 0; font-size: 1rem; color: var(--text-secondary); }
.about-intro-text p { color: var(--text-secondary); line-height: 1.75; font-size: 1rem; margin-bottom: 16px; }
.about-intro-text p:last-child { margin-bottom: 0; }
.about-intro-image { border-radius: var(--radius-xl); overflow: hidden; box-shadow: var(--shadow-md); position: relative; }
.about-intro-image img { width: 100%; height: auto; display: block; }

/* About Alt Section (浅灰区块图文交替) */
.section-dark-alt { background: var(--gray-100); }
.about-alt-section { padding: 120px 0; }
.about-alt-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.about-alt-image { border-radius: var(--radius-xl); overflow: hidden; box-shadow: var(--shadow-md); }
.about-alt-image img { width: 100%; height: auto; display: block; }
.about-alt-text h3 { font-size: clamp(1.5rem, 2.2vw, 1.85rem); font-weight: 700; margin-bottom: 20px; color: var(--gray-900); letter-spacing: -0.02em; }
.about-alt-text p { color: var(--text-secondary); line-height: 1.75; font-size: 1rem; margin-bottom: 16px; }
.highlight-list { margin-top: 20px; display: flex; flex-direction: column; gap: 10px; }
.highlight-list li { font-size: 0.95rem; color: var(--text-secondary); padding-left: 22px; position: relative; }
.highlight-list li::before { content: ''; position: absolute; left: 0; top: 10px; width: 6px; height: 6px; background: var(--brand); border-radius: 50%; }
.highlight-list li strong { color: var(--gray-900); font-weight: 600; }

/* Core Stats */
.stats-section { padding: 120px 0; background: var(--gray-100); }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.stat-card {
    background: var(--white); padding: 52px 28px; border-radius: var(--radius-lg);
    text-align: center; transition: transform var(--transition-slow), box-shadow var(--transition-slow);
    position: relative; overflow: hidden; box-shadow: var(--shadow-sm);
}
.stat-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
.stat-number { font-size: clamp(2.4rem, 3.5vw, 3.25rem); font-weight: 700; color: var(--brand); margin-bottom: 10px; line-height: 1; letter-spacing: -0.03em; }
.stat-label { font-size: 1rem; color: var(--text-secondary); font-weight: 400; }

/* Timeline */
.timeline-section { padding: 120px 0; }
.timeline { position: relative; padding: 20px 0; max-width: 1000px; margin: 0 auto; }
.timeline::before {
    content: ''; position: absolute; left: 50%; top: 0; bottom: 0; width: 2px;
    background: linear-gradient(180deg, transparent, var(--border) 10%, var(--border) 90%, transparent);
    transform: translateX(-50%);
}
.timeline-item { display: flex; align-items: flex-start; margin-bottom: 56px; position: relative; }
.timeline-item:last-child { margin-bottom: 0; }
.timeline-item:nth-child(odd) { flex-direction: row; }
.timeline-item:nth-child(even) { flex-direction: row-reverse; }
.timeline-year { flex: 0 0 140px; text-align: center; font-size: 1.75rem; font-weight: 700; color: var(--brand); padding: 12px 0; position: relative; z-index: 1; letter-spacing: -0.02em; }
.timeline-item:nth-child(odd) .timeline-year { padding-right: 48px; }
.timeline-item:nth-child(even) .timeline-year { padding-left: 48px; }
.timeline-content {
    flex: 1; background: var(--white); padding: 28px 32px; border-radius: var(--radius);
    border: 1px solid var(--border); position: relative; transition: all var(--transition);
}
.timeline-content:hover { box-shadow: var(--shadow-md); border-color: var(--brand); transform: translateY(-3px); }
.timeline-content::before {
    content: ''; position: absolute; top: 28px; width: 12px; height: 12px;
    background: var(--white); border-radius: 50%; border: 3px solid var(--brand);
    box-shadow: 0 0 0 4px rgba(26,62,207,0.12); transition: all var(--transition);
}
.timeline-item:hover .timeline-content::before { box-shadow: 0 0 0 8px rgba(26,62,207,0.15); background: var(--brand); }
.timeline-item:nth-child(odd) .timeline-content::before { left: -6px; }
.timeline-item:nth-child(even) .timeline-content::before { right: -6px; }
.timeline-content h4 { font-size: 1.2rem; font-weight: 600; color: var(--gray-900); margin-bottom: 8px; }
.timeline-content p { color: var(--text-secondary); font-size: 0.95rem; line-height: 1.7; margin: 0; }

/* Certifications */
.cert-section { padding: 80px 0; }
.cert-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.cert-card {
    background: var(--white); padding: 44px 28px; border-radius: var(--radius-lg);
    text-align: center; border: 1px solid var(--border); transition: all var(--transition);
}
.cert-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }
.cert-icon { margin-bottom: 20px; display: flex; justify-content: center; }
.cert-name { font-size: 1.05rem; font-weight: 600; color: var(--gray-900); }

/* About CTA */
.about-cta {
    padding: 80px 0; text-align: center;
    background: linear-gradient(135deg, var(--gray-800), var(--gray-900));
    position: relative; overflow: hidden;
}
.about-cta::before {
    content: ''; position: absolute; inset: 0;
    background:
        radial-gradient(ellipse at 30% 50%, rgba(26,62,207,0.1) 0%, transparent 60%),
        radial-gradient(ellipse at 70% 30%, rgba(255,255,255,0.03) 0%, transparent 50%);
    pointer-events: none;
    animation: bannerGlow 8s ease-in-out infinite alternate;
}
.about-cta h2 { color: var(--white); font-size: 2.25rem; font-weight: 700; margin-bottom: 20px; position: relative; z-index: 1; }
.about-cta p { color: rgba(255,255,255,0.7); font-size: 1.1rem; margin-bottom: 36px; max-width: 700px; margin-left: auto; margin-right: auto; line-height: 1.75; position: relative; z-index: 1; }
.about-cta .btn { position: relative; z-index: 1; }

/* ============================================
   Factory Page
   ============================================ */
.factory-overview { padding: 80px 0; }
.factory-intro-text { max-width: 920px; margin: 0 auto; }
.factory-intro-text p { color: var(--text-secondary); line-height: 1.85; font-size: 0.95rem; margin-bottom: 16px; }
.factory-intro-text p:last-child { margin-bottom: 0; }

/* Equipment Grid */
.equipment-section { padding: 80px 0; background: var(--gray-100); }
.equipment-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.equipment-card {
    background: var(--white); border-radius: var(--radius-lg); overflow: hidden;
    border: 1px solid var(--border); transition: all var(--transition);
}
.equipment-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }
.equipment-image { width: 100%; height: 240px; overflow: hidden; background: var(--gray-100); position: relative; }
.equipment-image img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease; }
.equipment-card:hover .equipment-image img { transform: scale(1.06); }
.equipment-info { padding: 24px; }
.equipment-name { font-size: 1.15rem; font-weight: 600; color: var(--gray-900); margin-bottom: 8px; }
.equipment-qty { font-size: 1.75rem; font-weight: 700; color: var(--brand); margin-bottom: 4px; font-family: var(--font-mono); }
.equipment-params { font-size: 0.875rem; color: var(--text-muted); }

/* Inspection Grid */
.inspection-section { padding: 80px 0; }
.inspection-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.inspection-item {
    background: var(--white); padding: 44px 24px; border-radius: var(--radius-lg);
    text-align: center; border: 1px solid var(--border); transition: all var(--transition);
}
.inspection-item:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }
.inspection-icon { width: 80px; height: 80px; margin: 0 auto 20px; border-radius: 50%; overflow: hidden; background: var(--brand-glow); display: flex; align-items: center; justify-content: center; transition: all var(--transition); }
.inspection-item:hover .inspection-icon { background: rgba(26,62,207,0.12); transform: scale(1.05); }
.inspection-icon img { width: 100%; height: 100%; object-fit: cover; }
.inspection-name { font-size: 1.05rem; font-weight: 600; color: var(--gray-900); margin-bottom: 8px; }
.inspection-desc { font-size: 0.95rem; color: var(--brand); font-weight: 500; }

/* Flow Steps (品控流程) */
.quality-flow { padding: 80px 0; background: var(--gray-100); }
.flow-steps { display: flex; gap: 0; position: relative; padding: 24px 0; max-width: 1100px; margin: 0 auto; }
.flow-steps::before {
    content: ''; position: absolute; top: 40px; left: 8%; right: 8%; height: 2px;
    background: linear-gradient(90deg, var(--border), var(--brand), var(--border)); z-index: 0;
}
.flow-step { flex: 1; text-align: center; position: relative; z-index: 1; padding: 0 20px; }
.flow-step-number {
    display: flex; align-items: center; justify-content: center;
    width: 80px; height: 80px; margin: 0 auto 20px;
    background: var(--gray-900); color: var(--white); font-size: 1.4rem;
    font-weight: 700; border-radius: 50%; border: 4px solid var(--white);
    box-shadow: 0 0 0 3px var(--border); transition: all var(--transition);
    font-family: var(--font-mono);
}
.flow-step:hover .flow-step-number { background: var(--brand); box-shadow: 0 0 0 6px rgba(26,62,207,0.15); transform: scale(1.1); }
.flow-step-title { font-size: 1.05rem; font-weight: 600; color: var(--gray-900); margin-bottom: 10px; }
.flow-step-desc { font-size: 0.875rem; color: var(--text-secondary); line-height: 1.6; }

/* Capacity Grid (产能数据) */
.capacity-section { padding: 80px 0; }
.capacity-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.capacity-card {
    background: var(--white); padding: 48px 28px; border-radius: var(--radius-lg);
    text-align: center; border: 1px solid var(--border); transition: all var(--transition);
    position: relative; overflow: hidden;
}
.capacity-card::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
    background: var(--brand); transform: scaleX(0); transition: transform var(--transition);
}
.capacity-card:hover::before { transform: scaleX(1); }
.capacity-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }
.capacity-number { font-size: 3rem; font-weight: 700; color: var(--brand); margin-bottom: 10px; line-height: 1; letter-spacing: -0.03em; }
.capacity-label { font-size: 1rem; color: var(--text-secondary); font-weight: 400; }

/* Gallery Grid (车间实景) */
.gallery-section { padding: 80px 0; background: var(--gray-100); }
.gallery-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.gallery-item { border-radius: var(--radius-lg); overflow: hidden; transition: all var(--transition); position: relative; }
.gallery-item:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.gallery-item img { width: 100%; height: 300px; object-fit: cover; display: block; transition: transform 0.6s ease; }
.gallery-item:hover img { transform: scale(1.05); }

/* ============================================
   Contact Page
   ============================================ */
.contact-cards-section { padding: var(--section-spacing) 0; }
.contact-cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--card-gap); }
.contact-card {
    background: var(--white); padding: var(--card-padding); border-radius: var(--radius-lg);
    text-align: center; box-shadow: var(--shadow-sm); transition: all var(--transition);
}
.contact-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.contact-card-icon { width: 64px; height: 64px; margin: 0 auto var(--card-title-desc); display: flex; align-items: center; justify-content: center; background: var(--brand-glow); border-radius: 50%; color: var(--brand); transition: all var(--transition); overflow: hidden; }
.contact-card-icon img { width: 48px; height: 48px; object-fit: contain; display: block; margin: 0 auto; }
.contact-card:hover .contact-card-icon { background: rgba(26,62,207,0.12); transform: scale(1.05); }
.contact-card-title { font-size: 1.05rem; font-weight: 600; color: var(--gray-900); margin-bottom: var(--card-title-content); }
.contact-card-value { font-size: 0.95rem; color: var(--text-secondary); line-height: 1.6; }
.contact-card-link { font-size: 0.95rem; color: var(--text-secondary); text-decoration: none; transition: color var(--transition); word-break: break-all; }
.contact-card-link:hover { color: var(--brand); }

/* Contact Form */
.contact-form-section { padding: var(--section-spacing) 0; }
.contact-form-layout { display: grid; grid-template-columns: 1.3fr 0.7fr; gap: 48px; align-items: start; }
.contact-form-wrapper { background: var(--white); padding: 40px; border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); }
.contact-form-title { font-size: 1.3rem; font-weight: 600; color: var(--gray-900); margin-bottom: var(--title-content-spacing); }
.contact-form .form-group { margin-bottom: var(--form-gap); }
.contact-form .form-group label { display: block; font-weight: 500; color: var(--gray-900); margin-bottom: 8px; font-size: 0.9rem; }
.contact-form .form-control {
    width: 100%; padding: 14px 4px; border: none; border-bottom: 1px solid #d1d5db;
    border-radius: 0; font-size: 0.95rem; font-family: inherit;
    color: var(--text-primary); transition: border-color var(--transition); background: transparent;
}
.contact-form .form-control:focus { outline: none; border-bottom-color: var(--brand); box-shadow: none; }
.contact-form textarea.form-control { resize: vertical; min-height: 140px; }
.contact-form .btn { margin-top: 8px; }

/* Contact Sidebar */
.contact-sidebar { display: flex; flex-direction: column; gap: 24px; }
.sidebar-card { background: var(--white); padding: 28px; border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); }
.sidebar-title { font-size: 1.15rem; font-weight: 600; color: var(--gray-900); margin-bottom: 20px; }
.sidebar-contact-list { display: flex; flex-direction: column; gap: var(--sidebar-list-gap); list-style: none; padding: 0; margin: 0; }
.sidebar-contact-list li { display: flex; align-items: flex-start; gap: 12px; padding: 0; font-size: 0.9rem; color: var(--text-secondary); line-height: 1.6; }
.sidebar-contact-list li:last-child { border-bottom: none; }
.sidebar-contact-list svg { flex-shrink: 0; margin-top: 3px; color: var(--brand); }
.sidebar-contact-link { font-size: 0.9rem; color: var(--text-secondary); text-decoration: none; transition: color var(--transition); line-height: 1.6; }
.sidebar-contact-link:hover { color: var(--brand); }
.sidebar-hours { font-size: 0.95rem; color: var(--text-secondary); line-height: 1.8; }

/* Map Section */
.map-section { padding: var(--section-spacing) 0; }
.map-placeholder {
    width: 100%; height: 400px; background: var(--gray-100);
    border-radius: var(--radius-lg); display: flex; align-items: center;
    justify-content: center; flex-direction: column; gap: 16px;
}
.map-placeholder p { color: var(--text-muted); font-size: 0.95rem; }

/* Transport Grid */
.transport-section { padding: var(--section-spacing) 0; }
.transport-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--card-gap); }
.transport-item {
    background: var(--white); padding: var(--card-padding); border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm); transition: all var(--transition);
    display: flex; flex-direction: column; align-items: center; text-align: center;
}
.transport-item:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.transport-icon { width: 72px; height: 72px; margin-bottom: var(--card-title-desc); display: flex; align-items: center; justify-content: center; background: var(--brand-glow); border-radius: 50%; color: var(--brand); transition: all var(--transition); overflow: hidden; }
.transport-icon img { width: 48px; height: 48px; object-fit: contain; display: block; margin: 0 auto; }
.transport-item:hover .transport-icon { background: rgba(26,62,207,0.12); transform: scale(1.05); }
.transport-info h4 { font-size: 1.1rem; font-weight: 600; color: var(--gray-900); margin-bottom: var(--card-title-content); }
.transport-info p { font-size: 0.9rem; color: var(--text-secondary); line-height: 1.6; margin: 0; }

/* ============================================
   Blog
   ============================================ */
.blog-banner { background: var(--gray-100); padding: 40px 0; text-align: center; }
.blog-banner-title { font-size: 2rem; font-weight: 700; color: var(--gray-900); margin-bottom: 8px; }
.blog-banner-desc { font-size: 1rem; color: var(--text-secondary); max-width: 500px; margin: 0 auto; }

.blog-content-section { padding: 40px 0 80px; }

/* Blog Filter Bar */
.blog-filter-bar { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 16px; margin-bottom: 32px; padding-bottom: 20px; border-bottom: 1px solid var(--border); }
.blog-filter-categories { display: flex; gap: 4px; flex-wrap: wrap; }
.blog-filter-cat { display: inline-flex; align-items: center; padding: 6px 16px; font-size: 0.85rem; font-weight: 400; color: var(--text-secondary); border-radius: 20px; transition: all var(--transition); white-space: nowrap; }
.blog-filter-cat:hover { color: var(--brand); background: var(--brand-glow); }
.blog-filter-cat.active { background: var(--gray-900); color: var(--white); }
.blog-filter-actions { display: flex; align-items: center; gap: 16px; }

/* Blog Sort */
.blog-sort { display: flex; border: 1px solid var(--border); border-radius: var(--radius-sm); overflow: hidden; }
.blog-sort-btn { padding: 6px 14px; font-size: 0.825rem; font-weight: 400; color: var(--text-secondary); transition: all var(--transition); white-space: nowrap; }
.blog-sort-btn:hover { color: var(--brand); }
.blog-sort-btn.active { background: var(--gray-900); color: var(--white); }
.blog-sort-btn + .blog-sort-btn { border-left: 1px solid var(--border); }

/* Blog Search */
.blog-search { position: relative; display: flex; align-items: center; }
.blog-search-input { width: 200px; height: 36px; padding: 0 36px 0 14px; border: 1px solid var(--border); border-radius: 20px; font-size: 0.85rem; color: var(--text-primary); background: var(--white); outline: none; transition: all var(--transition); }
.blog-search-input:focus { border-color: var(--brand); width: 240px; }
.blog-search-input::placeholder { color: var(--text-muted); }
.blog-search-btn { position: absolute; right: 4px; top: 50%; transform: translateY(-50%); width: 30px; height: 30px; display: flex; align-items: center; justify-content: center; background: none; border: none; color: var(--text-muted); cursor: pointer; border-radius: 50%; transition: all var(--transition); }
.blog-search-btn:hover { color: var(--brand); background: var(--gray-100); }

/* Blog Grid */
.blog-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.blog-card { background: var(--white); border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border); transition: all var(--transition); display: flex; flex-direction: column; height: 100%; }
.blog-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }
.blog-card-image { display: block; position: relative; width: 100%; aspect-ratio: 16 / 9; overflow: hidden; background: var(--gray-100); flex-shrink: 0; }
.blog-card-image img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.blog-card:hover .blog-card-image img { transform: scale(1.06); }
.blog-card-tag { position: absolute; top: 12px; left: 12px; padding: 3px 10px; font-size: 0.75rem; font-weight: 400; background: rgba(255,255,255,0.92); color: var(--brand); border-radius: 4px; backdrop-filter: blur(4px); }
.blog-card-body { padding: 20px; flex: 1; display: flex; flex-direction: column; }
.blog-card-title { font-size: 1.1rem; font-weight: 600; line-height: 1.5; margin-bottom: 8px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.blog-card-title a { color: var(--gray-900); transition: color var(--transition); }
.blog-card-title a:hover { color: var(--brand); }
.blog-card-excerpt { font-size: 0.875rem; line-height: 1.6; color: var(--text-secondary); display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; margin-bottom: 16px; }
.blog-card-footer { display: flex; justify-content: space-between; align-items: center; font-size: 0.8125rem; color: var(--text-muted); margin-top: auto; padding-top: 12px; }
.blog-card-views { display: inline-flex; align-items: center; gap: 4px; }

/* Blog Empty */
.blog-empty { text-align: center; padding: 80px 20px; }
.blog-empty-icon { color: var(--text-muted); margin-bottom: 16px; }
.blog-empty h3 { font-size: 1.1rem; color: var(--text-secondary); margin-bottom: 8px; }
.blog-empty p { font-size: 0.875rem; color: var(--text-muted); margin-bottom: 24px; }

/* Pagination */
.pagination { margin-top: 48px; display: flex; justify-content: center; }
.pagination-inner { display: flex; align-items: center; gap: 4px; }
.pagination-btn { display: inline-flex; align-items: center; justify-content: center; padding: 8px 16px; font-size: 0.875rem; font-weight: 400; color: var(--text-secondary); border-radius: var(--radius-sm); border: 1px solid var(--border); transition: all var(--transition); white-space: nowrap; }
.pagination-btn:hover { background: var(--gray-100); border-color: var(--brand); color: var(--brand); }
.pagination-btn.disabled { opacity: 0.4; cursor: not-allowed; pointer-events: none; }
.pagination-pages { display: flex; align-items: center; gap: 4px; }
.pagination-num { display: inline-flex; align-items: center; justify-content: center; min-width: 40px; height: 40px; padding: 0 8px; font-size: 0.875rem; font-weight: 400; color: var(--text-secondary); border-radius: var(--radius-sm); border: 1px solid transparent; transition: all var(--transition); }
.pagination-num:hover { background: var(--gray-100); border-color: var(--border); color: var(--brand); }
.pagination-num.active { background: var(--gray-900); color: var(--white); border-color: var(--gray-900); }
.pagination-dots { display: inline-flex; align-items: center; justify-content: center; min-width: 40px; height: 40px; font-size: 0.875rem; color: var(--text-muted); }

/* Blog Detail */
.blog-detail-image { margin-bottom:28px; border-radius:var(--radius); overflow:hidden; background:var(--gray-100); }
.blog-detail-image img { width:100%; height:360px; object-fit:cover; }
.blog-detail-meta { display:flex; gap:20px; flex-wrap:wrap; margin-bottom:20px; font-size:0.875rem; color:var(--text-muted); }
.blog-detail-meta span { display:inline-flex; align-items:center; gap:6px; }
.blog-detail-meta a { color:var(--brand); font-weight:500; }
.blog-detail-title { font-size:1.75rem; margin-bottom:24px; color:var(--gray-900); font-weight:700; }
.blog-detail-content { font-size:1rem; line-height:1.9; color:var(--text-secondary); }
.blog-detail-content h2 { margin:36px 0 16px; font-size:1.4rem; }
.blog-detail-content h3 { margin:28px 0 12px; font-size:1.2rem; }
.blog-detail-content p { margin-bottom:16px; }
.blog-detail-tags { margin-top:28px; padding-top:20px; border-top:1px solid var(--border); font-size:0.875rem; color:var(--text-secondary); }
.blog-detail-nav { margin-top:36px; padding-top:20px; border-top:1px solid var(--border); }

/* ============================================
   Detail Pages (Product/Case)
   ============================================ */
.detail-layout { display:grid; grid-template-columns:1fr 1fr; gap:48px; align-items:start; }
.detail-image { border-radius:var(--radius); overflow:hidden; background:var(--gray-100); }
.detail-image img { width:100%; height:auto; }
.detail-info h1 { font-size:1.75rem; margin-bottom:16px; font-weight:700; }
.detail-info .meta { color:var(--text-muted); font-size:0.875rem; margin-bottom:24px; }
.detail-section { margin-top:28px; padding-top:20px; border-top:1px solid var(--border); }
.detail-section h3 { font-size:1.1rem; margin-bottom:12px; color:var(--gray-900); font-weight:600; }
.detail-section p, .detail-section ul { color:var(--text-secondary); font-size:0.95rem; line-height:1.8; }
.detail-section ul { padding-left:20px; list-style:disc; }
.detail-section ul li { margin-bottom:4px; }
.detail-back { margin-top:36px; }
.detail-back a { display:inline-flex; align-items:center; gap:6px; font-weight:500; color:var(--brand); }
.detail-content { margin-top:24px; }
.detail-content h2 { font-size:1.5rem; margin-bottom:16px; }
.detail-description { color:var(--text-secondary); line-height:1.9; font-size:0.95rem; }
.detail-meta { margin-bottom:20px; font-size:0.9rem; color:var(--text-muted); }
.detail-meta strong { color:var(--gray-900); }
.detail-features,.detail-application,.detail-challenge,.detail-solution,.detail-result { color:var(--text-secondary); line-height:1.9; font-size:0.95rem; }

/* ============================================
   Page Content
   ============================================ */
.page-content { padding:60px 0; }
.page-content h2 { font-size:1.5rem; margin:40px 0 20px; padding-bottom:12px; border-bottom:1px solid var(--border); color:var(--gray-900); font-weight:700; }
.page-content h2:first-child { margin-top:0; }
.page-content h3 { font-size:1.2rem; margin:28px 0 16px; }
.page-content p { margin-bottom:16px; color:var(--text-secondary); line-height:1.8; }
.content-area { line-height:1.9; color:var(--text-secondary); }
.content-area img { max-width:100%; border-radius:var(--radius); margin:16px 0; }
.content-area ul, .content-area ol { padding-left:20px; margin-bottom:16px; }
.content-area li { margin-bottom:8px; }
.content-area h2 { margin:36px 0 16px; padding-bottom:8px; border-bottom:1px solid var(--border); }
.content-area h3 { margin:24px 0 12px; }

/* ============================================
   Empty State
   ============================================ */
.empty-state { text-align:center; padding:80px 20px; color:var(--text-muted); }
.empty-state p { font-size:1.1rem; color:var(--text-secondary); }

/* ============================================
   Footer
   ============================================ */
.site-footer { background:var(--gray-900); color:rgba(255,255,255,0.6); padding:64px 0 0; }
.footer-grid { display:grid; grid-template-columns:1.5fr 1fr 1fr 1fr; gap:40px; padding-bottom:40px; border-bottom:1px solid rgba(255,255,255,0.08); }
.footer-logo .logo-name { color:var(--white); font-size:1.2rem; }
.footer-desc { margin:16px 0; font-size:0.9rem; line-height:1.8; color:rgba(255,255,255,0.5); max-width:320px; }
.footer-social { display:flex; gap:10px; margin-top:16px; }
.social-link { display:flex; align-items:center; justify-content:center; width:36px; height:36px; border-radius:50%; background:rgba(255,255,255,0.08); color:rgba(255,255,255,0.6); transition:all var(--transition); }
.social-link:hover { background:var(--brand); color:var(--white); }
.footer-title { color:var(--white); font-size:0.95rem; font-weight:600; margin-bottom:16px; }
.footer-links li { margin-bottom:8px; }
.footer-links a { color:rgba(255,255,255,0.5); font-size:0.875rem; transition:color var(--transition); }
.footer-links a:hover { color:var(--brand-light); }
.footer-contact li { display:flex; align-items:flex-start; gap:10px; margin-bottom:12px; font-size:0.875rem; color:rgba(255,255,255,0.5); }
.footer-contact svg { flex-shrink:0; margin-top:3px; color:var(--brand-light); }
.footer-contact-link { color:rgba(255,255,255,0.5); text-decoration:none; transition:color var(--transition); }
.footer-contact-link:hover { color:var(--brand-light); }
.footer-bottom { display:flex; justify-content:space-between; align-items:center; padding:20px 0; font-size:0.825rem; }
.footer-bottom-links { display:flex; gap:20px; }
.footer-bottom-links a { color:rgba(255,255,255,0.4); font-size:0.825rem; }
.footer-bottom-links a:hover { color:var(--brand-light); }

/* ============================================
   Scroll to Top
   ============================================ */
.scroll-top {
    position:fixed; bottom:30px; right:30px; width:44px; height:44px;
    border-radius:50%; background:var(--gray-900); color:var(--white);
    border:none; cursor:pointer; display:flex; align-items:center; justify-content:center;
    opacity:0; visibility:hidden; transform:translateY(20px);
    transition:all 0.3s ease; z-index:999;
    box-shadow:0 4px 16px rgba(0,0,0,0.2);
}
.scroll-top.visible { opacity:1; visibility:visible; transform:translateY(0); }
.scroll-top:hover { background:var(--brand); transform:translateY(-4px); box-shadow:0 8px 24px rgba(26,62,207,0.3); }
.scroll-top:active { transform:translateY(0); }

/* ============================================
   Form Elements
   ============================================ */
.form-group { margin-bottom:20px; }
.form-group label { display:block; font-weight:500; color:var(--gray-900); margin-bottom:8px; font-size:0.9rem; }
.form-control {
    width:100%; padding:12px 16px; border:1.5px solid var(--border);
    border-radius:var(--radius-sm); font-size:0.95rem; font-family:inherit;
    color:var(--text-primary); transition:border-color var(--transition); background:var(--white);
}
.form-control:focus { outline:none; border-color:var(--brand); box-shadow:0 0 0 3px rgba(26,62,207,0.08); }
textarea.form-control { resize:vertical; min-height:140px; }
.required { color:#e53e3e; }
.form-message { padding:14px 20px; border-radius:var(--radius-sm); margin-bottom:20px; font-weight:400; }
.form-success { background:#f0fff4; color:#2f855a; border:1px solid #c6f6d5; }
.form-error { background:#fff5f5; color:#c53030; border:1px solid #fed7d7; }

/* ============================================
   Animations
   ============================================ */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeInLeft {
    from { opacity: 0; transform: translateX(-30px); }
    to { opacity: 1; transform: translateX(0); }
}
@keyframes fadeInRight {
    from { opacity: 0; transform: translateX(30px); }
    to { opacity: 1; transform: translateX(0); }
}

.fade-in-up { opacity: 0; transform: translateY(30px); transition: opacity 0.6s ease, transform 0.6s ease; }
.fade-in-up.visible { opacity: 1; transform: translateY(0); }
.fade-in-up-delay-1.visible { transition-delay: 0.1s; }
.fade-in-up-delay-2.visible { transition-delay: 0.2s; }
.fade-in-up-delay-3.visible { transition-delay: 0.3s; }
.fade-in-up-delay-4.visible { transition-delay: 0.4s; }

.fade-in-up-left { opacity: 0; transform: translateX(-30px); transition: opacity 0.6s ease, transform 0.6s ease; }
.fade-in-up-left.visible { opacity: 1; transform: translateX(0); }
.fade-in-up-right { opacity: 0; transform: translateX(30px); transition: opacity 0.6s ease, transform 0.6s ease; }
.fade-in-up-right.visible { opacity: 1; transform: translateX(0); }

/* Card Hover */
.card-hover { transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition); }
.card-hover:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }

/* Masonry (no negative margins) */
.masonry { gap: 24px; }

/* ============================================
   FAQ Page - 常见问题页面
   ============================================ */

.faq-banner {
    padding: 80px 0 48px;
    background: linear-gradient(180deg, #f5f7fa 0%, #ffffff 100%);
    position: relative;
    overflow: hidden;
}
.faq-banner::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--brand) 50%, transparent);
    opacity: 0.15;
}
.faq-banner-inner {
    position: relative;
    padding-left: 28px;
}
.faq-banner-accent {
    position: absolute;
    left: 0;
    top: 4px;
    bottom: 4px;
    width: 4px;
    background: var(--brand);
    border-radius: 2px;
}
.faq-banner-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 12px;
    letter-spacing: -0.01em;
    line-height: 1.3;
}
.faq-banner-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin: 0;
    line-height: 1.6;
}

.faq-banner-dark {
    background: linear-gradient(135deg, #0b2a4a 0%, #1a3a5a 40%, #0F172A 100%);
}
.faq-banner-dark::after {
    opacity: 0.25;
    background: linear-gradient(90deg, transparent, rgba(26,62,207,0.4) 50%, transparent);
}
.faq-banner-dark .faq-banner-accent {
    background: var(--brand-light);
}
.faq-banner-dark .faq-banner-title {
    color: #ffffff;
}
.faq-banner-dark .faq-banner-subtitle {
    color: rgba(255,255,255,0.8);
}

/* Tabs */
.faq-tabs-wrapper {
    padding: 0 0 12px;
    position: sticky;
    top: var(--header-height);
    z-index: 10;
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-light);
}
.faq-tabs {
    display: flex;
    gap: 4px;
    overflow-x: auto;
    padding: 8px 0;
    -webkit-overflow-scrolling: touch;
}
.faq-tabs::-webkit-scrollbar { display: none; }
.faq-tab {
    display: inline-flex;
    align-items: center;
    padding: 8px 20px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: transparent;
    border: none;
    border-radius: 20px;
    cursor: pointer;
    white-space: nowrap;
    transition: color 0.3s ease, background 0.3s ease;
    font-family: inherit;
    flex-shrink: 0;
}
.faq-tab:hover {
    color: var(--brand);
    background: rgba(26,62,207,0.06);
}
.faq-tab.active {
    color: var(--brand);
    background: rgba(26,62,207,0.1);
    font-weight: 600;
}

/* Accordion */
.faq-section {
    padding: 40px 0 80px;
}
.faq-accordion {
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.faq-card {
    background: #ffffff;
    border-radius: 12px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.04);
    border: 1px solid var(--border-light);
    overflow: hidden;
    transition: box-shadow 0.3s ease, transform 0.3s ease;
}
.faq-card:hover {
    box-shadow: 0 4px 20px rgba(0,0,0,0.06);
    transform: translateY(-1px);
}
.faq-card.active {
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    border-color: rgba(26,62,207,0.15);
}
.faq-card-header {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    width: 100%;
    padding: 18px 20px;
    background: none;
    border: none;
    cursor: pointer;
    text-align: left;
    font-family: inherit;
    transition: background 0.3s ease;
}
.faq-card-header:hover {
    background: rgba(26,62,207,0.02);
}
.faq-card-icon {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    color: var(--brand);
    margin-top: 1px;
    transition: transform 0.3s ease;
}
.faq-card.active .faq-card-icon {
    transform: rotate(45deg);
}
.faq-card.active .faq-card-icon svg circle {
    fill: rgba(26,62,207,0.1);
}
.faq-card-question {
    flex: 1;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.6;
}
.faq-card-arrow {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    color: var(--text-muted);
    transition: transform 0.3s ease;
    margin-top: 2px;
}
.faq-card.active .faq-card-arrow {
    transform: rotate(180deg);
    color: var(--brand);
}
.faq-card-body {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease, opacity 0.35s ease;
    opacity: 0;
}
.faq-card.active .faq-card-body {
    max-height: 600px;
    opacity: 1;
}
.faq-card-answer {
    padding: 0 20px 18px 54px;
    font-size: 0.9375rem;
    line-height: 1.8;
    color: var(--text-secondary);
}
.faq-card-answer p {
    margin: 0;
}

/* CTA */
.faq-cta {
    padding: 0 0 80px;
}
.faq-cta-inner {
    background: linear-gradient(135deg, #f5f7fa 0%, #eef0f5 100%);
    border-radius: 12px;
    padding: 40px 40px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}
.faq-cta-text {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin: 0;
}
.faq-cta-btn {
    display: inline-flex;
    align-items: center;
    padding: 12px 32px;
    font-size: 0.9375rem;
    font-weight: 500;
    color: #ffffff;
    background: var(--brand);
    border: none;
    border-radius: 8px;
    cursor: pointer;
    text-decoration: none;
    transition: background 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
}
.faq-cta-btn:hover {
    background: var(--brand-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(26,62,207,0.25);
    color: #ffffff;
}

.faq-card.hidden {
    display: none;
}

/* FAQ Responsive */
@media (max-width: 768px) {
    .faq-banner {
        padding: 60px 0 36px;
    }
    .faq-banner-title {
        font-size: 1.75rem;
    }
    .faq-banner-subtitle {
        font-size: 1rem;
    }
    .faq-banner-inner {
        padding-left: 20px;
    }
    .faq-section {
        padding: 24px 0 60px;
    }
    .faq-tabs {
        gap: 2px;
    }
    .faq-tab {
        padding: 6px 14px;
        font-size: 0.8125rem;
    }
    .faq-card-header {
        padding: 14px 16px;
        gap: 10px;
    }
    .faq-card-question {
        font-size: 0.9375rem;
    }
    .faq-card-answer {
        padding: 0 16px 14px 46px;
        font-size: 0.875rem;
    }
    .faq-cta {
        padding: 0 0 60px;
    }
    .faq-cta-inner {
        padding: 32px 24px;
    }
}

/* ============================================================
   Design Upgrade v9 - 整站设计升级
   模块化 rem 字号系统 / 空间留白 / 图像质感 / 动效交互 / 品牌一致性
   ============================================================ */

/* ---------- 1. 字体排印：模块化 rem 字号系统 ---------- */
:root {
    --fs-display: clamp(2.5rem, 5vw, 4rem);
    --fs-h1: clamp(2.2rem, 4vw, 3.25rem);
    --fs-h2: clamp(1.75rem, 3vw, 2.5rem);
    --fs-h3: 1.5rem;
    --fs-h4: 1.15rem;
    --fs-body: 1rem;
    --fs-small: 0.875rem;
    --fs-caption: 0.8125rem;
    --section-gap: 80px;
    --section-gap-sm: 60px;
    --section-spacing: 80px;
    --section-spacing-mobile: 40px;
    --title-content-spacing: 24px;
    --card-gap: 24px;
    --card-padding: 24px 28px;
    --card-title-desc: 12px;
    --card-title-content: 8px;
    --form-gap: 16px;
    --sidebar-list-gap: 12px;
}

/* 标题加大加粗，正文 400 保证可读性 */
body { font-weight: 400; }
h1 { font-size: var(--fs-h1); font-weight: 700; letter-spacing: -0.02em; }
h2 { font-size: var(--fs-h2); font-weight: 700; letter-spacing: -0.015em; }
h3 { font-size: var(--fs-h3); font-weight: 600; }
h4 { font-size: var(--fs-h4); font-weight: 600; }
p { font-weight: 400; }

/* 具体场景标题 */
.hero-title { font-size: var(--fs-display); font-weight: 700; letter-spacing: -0.02em; }
.section-header .section-title { font-size: var(--fs-h2); font-weight: 700; letter-spacing: -0.015em; }
.page-title { font-size: var(--fs-h1); font-weight: 700; }
.page-hero-title { font-size: var(--fs-h1); font-weight: 700; }
.faq-banner-title { font-size: var(--fs-h1); font-weight: 700; }
.blog-banner-title { font-size: var(--fs-h2); font-weight: 700; }
.stat-number, .capacity-number { font-weight: 700; }

/* ---------- 2. 空间与留白：桌面端提升 50%-100% ---------- */
.section-padding { padding: var(--section-gap) 0; }
.advantages-section,
.products-section,
.cases-section,
.home-cta-section,
.about-intro,
.about-alt-section,
.stats-section,
.timeline-section,
.cert-section,
.about-cta,
.factory-overview,
.equipment-section,
.inspection-section,
.quality-flow,
.capacity-section,
.gallery-section,
.contact-cards-section,
.transport-section { padding: var(--section-gap) 0; }

.contact-cards-section,
.contact-form-section,
.map-section { padding: var(--section-spacing) 0; }
.blog-content-section,
.faq-section { padding: var(--section-gap-sm) 0 var(--section-gap); }
.faq-banner { padding: var(--section-gap) 0 64px; }
.page-banner { padding: 140px 0 80px; }
.page-hero { padding: var(--section-spacing) 0; }
.hero-content { padding: var(--section-gap) 0; }
.hero-banner { min-height: 90vh; }
.page-content { padding: 90px 0; }
.site-footer { padding-top: 96px; }
.cta-section,
.home-cta-section { padding: var(--section-gap) 0; }
.section-header { margin-bottom: var(--title-content-spacing); }
.section-footer { margin-top: 72px; }

/* ---------- 3. 图形与图像：统一裁剪质感 ---------- */
.about-intro-image,
.about-alt-image,
.detail-image {
    aspect-ratio: 4 / 3;
    overflow: hidden;
}
.about-intro-image img,
.about-alt-image img,
.detail-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.blog-detail-image img { height: 420px; }

/* ---------- 4. 去除多余装饰：默认无阴影，回归纯粹 ---------- */
.advantage-card,
.product-card,
.case-card,
.stat-card,
.cert-card,
.equipment-card,
.inspection-item,
.capacity-card,
.blog-card,
.timeline-content,
.faq-card { box-shadow: none; }

/* 悬停时统一加深阴影反馈 */
.advantage-card:hover,
.product-card:hover,
.case-card:hover,
.stat-card:hover,
.cert-card:hover,
.equipment-card:hover,
.inspection-item:hover,
.capacity-card:hover,
.contact-card:hover,
.transport-item:hover,
.blog-card:hover,
.faq-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.1);
    border-color: transparent;
}

/* ---------- 5. 动效与交互 ---------- */
/* 按钮与链接统一平滑过渡 */
.btn,
.nav-link,
.nav-dropdown-item,
.pagination-btn,
.pagination-num,
.blog-filter-cat,
.lang-switch-btn,
.header-contact-btn,
.social-link { transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1); }

.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

/* 卡片图片微缩放 */
.product-card-image img,
.case-card-image img,
.equipment-image img,
.blog-card-image img,
.gallery-item img { transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1); }

/* AOS 风格滚动动画（data-aos 属性驱动） */
[data-aos] {
    opacity: 0;
    transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
    will-change: opacity, transform;
}
[data-aos="fade-up"] { transform: translateY(36px); }
[data-aos="fade-down"] { transform: translateY(-36px); }
[data-aos="fade-left"] { transform: translateX(36px); }
[data-aos="fade-right"] { transform: translateX(-36px); }
[data-aos="zoom-in"] { transform: scale(0.94); }
[data-aos].aos-animate { opacity: 1; transform: none; }

/* 增强现有 fade-in-up 缓动 */
.fade-in-up { transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.4, 0, 0.2, 1); }

/* 可访问性焦点态 */
.btn:focus-visible,
.nav-link:focus-visible,
.form-control:focus-visible,
a:focus-visible {
    outline: 2px solid var(--brand);
    outline-offset: 2px;
}

/* ---------- 6. 品牌一致性：状态色仅用于反馈 ---------- */
.required { color: #DC2626; }
.form-success { background: #F0FDF4; color: #15803D; border-color: #BBF7D0; }
.form-error { background: #FEF2F2; color: #B91C1C; border-color: #FECACA; }

/* 移动端还原（保持原有小屏节奏，避免被上方桌面规则覆盖） */
@media (max-width: 768px) {
    .faq-section { padding: 24px 0 60px; }
    .faq-banner { padding: 60px 0 36px; }
    .faq-banner-title { font-size: 1.75rem; }
    .contact-cards-section { padding: var(--section-spacing-mobile) 0; }
    .contact-form-section { padding: var(--section-spacing-mobile) 0; }
    .blog-content-section { padding: 24px 0 30px; }
    .page-banner { padding: 90px 0 32px; }
    .page-content { padding: 40px 0; }
    .site-footer { padding-top: 56px; }
    .section-header { margin-bottom: 40px; }
    .section-footer { margin-top: 32px; }
}

/* ============================================================
   联系页 - Stripe 极简风格
   ============================================================ */
.contact-simple {
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro SC", "Helvetica Neue", Arial, sans-serif;
    background: #fff;
    padding: 80px 0 40px;
}
.contact-title {
    font-size: 32px;
    font-weight: 700;
    color: #1d1d1f;
    margin-bottom: 8px;
    letter-spacing: -0.02em;
}
.contact-subtitle {
    font-size: 16px;
    color: #6b7280;
    margin: 0 0 48px;
}
.contact-info-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    padding: 0;
}
.contact-item {
    display: flex;
    flex-direction: column;
}
.contact-item-icon {
    color: #6b7280;
    margin-bottom: 12px;
}
.contact-label {
    font-size: 13px;
    font-weight: 500;
    color: #6b7280;
    margin-bottom: 4px;
}
.contact-value {
    font-size: 18px;
    font-weight: 500;
    color: #1d1d1f;
    text-decoration: none;
    transition: color 0.2s;
}
.contact-value:hover {
    color: #1a3ecf;
}
@media (max-width: 768px) {
    .contact-simple { padding: 56px 0 24px; }
    .contact-info-grid { grid-template-columns: 1fr; gap: 24px; }
}

/* 联系页 - 简约表单 */
.contact-form-grid {
    max-width: 720px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}
.contact-form-grid .form-group-full {
    grid-column: 1 / -1;
}
.contact-form-grid .form-control {
    border: none;
    border-bottom: 1px solid #d1d5db;
    border-radius: 0;
    padding: 12px 0;
    background: transparent;
}
.contact-form-grid .form-control:focus {
    border-bottom-color: #1a3ecf;
    box-shadow: none;
}
.contact-form-grid .form-group label {
    font-size: 13px;
    font-weight: 500;
    color: #6b7280;
    margin-bottom: 6px;
}
.contact-form-grid .form-submit-btn {
    border-radius: 8px;
    min-width: 160px;
}
@media (max-width: 768px) {
    .contact-form-grid { grid-template-columns: 1fr; }
}