/* ====================================================================
   谷东科技 自定义样式 v3.0 — 视觉升级版
   毛玻璃导航 / 渐变文字 / 3D卡片 / 暗黑模式 / 波纹按钮 / 粒子动效
   ==================================================================== */

/* ===== CSS 变量 ===== */
:root {
    --color-primary: #2563EB;
    --color-primary-hover: #1D4ED8;
    --color-primary-light: #3B82F6;
    --color-accent-indigo: #6366F1;
    --color-accent-cyan: #0EA5E9;
    --color-accent-sky: #38BDF8;
    --color-bg-base: #FFFFFF;
    --color-bg-subtle: #F8FAFC;
    --color-bg-muted: #F1F5F9;
    --color-surface: #FFFFFF;
    --color-surface-hover: #F8FAFC;
    --color-border: #E2E8F0;
    --color-border-strong: #CBD5E1;
    --color-text-primary: #0F172A;
    --color-text-body: #334155;
    --color-text-muted: #64748B;
    --color-text-inverse: #FFFFFF;
    --color-text-link: #2563EB;
    --color-success: #10B981;
    --color-warning: #F59E0B;
    --color-error: #EF4444;
    --gradient-primary: linear-gradient(135deg, #2563EB 0%, #3B82F6 50%, #6366F1 100%);
    --gradient-hero: linear-gradient(135deg, #1E40AF 0%, #2563EB 30%, #3B82F6 60%, #6366F1 100%);
    --gradient-text: linear-gradient(135deg, #1D4ED8 0%, #3B82F6 50%, #6366F1 100%);
    --gradient-glow: linear-gradient(135deg, #3B82F6, #6366F1, #0EA5E9);
    --gradient-cta: linear-gradient(135deg, #1E40AF 0%, #2563EB 50%, #3B82F6 100%);
    --font-body: "Inter", "PingFang SC", "Microsoft YaHei", "Segoe UI", system-ui, sans-serif;
    --font-heading: "Inter", "PingFang SC", "Microsoft YaHei", "Segoe UI", system-ui, sans-serif;
    --font-mono: "JetBrains Mono", "Fira Code", "SF Mono", "Consolas", monospace;
    --space-1: 0.25rem;  --space-2: 0.5rem;  --space-3: 0.75rem;
    --space-4: 1rem;     --space-5: 1.25rem; --space-6: 1.5rem;
    --space-8: 2rem;     --space-10: 2.5rem; --space-12: 3rem;
    --space-16: 4rem;    --space-20: 5rem;   --space-24: 6rem;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-2xl: 32px;
    --radius-full: 9999px;
    --shadow-sm: 0 1px 2px 0 rgba(15, 23, 42, 0.05), 0 1px 3px 0 rgba(15, 23, 42, 0.08);
    --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.07), 0 2px 4px -2px rgba(15, 23, 42, 0.05);
    --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -4px rgba(15, 23, 42, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(15, 23, 42, 0.10), 0 8px 10px -6px rgba(15, 23, 42, 0.05);
    --shadow-brand: 0 8px 24px -4px rgba(37, 99, 235, 0.40), 0 4px 8px -2px rgba(37, 99, 235, 0.20);
    --shadow-glow: 0 0 0 1px rgba(59, 130, 246, 0.20), 0 8px 32px -4px rgba(37, 99, 235, 0.25), 0 0 40px -8px rgba(99, 102, 241, 0.30);
    --duration-fast: 150ms;
    --duration-normal: 250ms;
    --duration-slow: 400ms;
    --duration-slower: 600ms;
    --ease-default: cubic-bezier(0.4, 0, 0.2, 1);
    --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
    --ease-out: cubic-bezier(0, 0, 0.2, 1);
    --ease-in: cubic-bezier(0.4, 0, 1, 1);
}

/* ===== 全局重置 ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
    overscroll-behavior-y: contain;
    height: 100%;
}

body {
    font-family: var(--font-body);
    color: var(--color-text-body);
    background-color: var(--color-bg-base);
    line-height: 1.7;
    transition: background-color var(--duration-slow) var(--ease-default),
                color var(--duration-slow) var(--ease-default);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    min-height: 100vh;
    min-height: 100dvh;
    min-height: calc(var(--vh, 1vh) * 100);
}

/* ===== 关键帧动画 ===== */
@keyframes ripple-spread {
    to { transform: scale(4); opacity: 0; }
}

@keyframes particle-float {
    0%, 100% { transform: translateY(0) translateX(0); opacity: 0.3; }
    25%      { transform: translateY(-30px) translateX(10px); opacity: 0.8; }
    50%      { transform: translateY(-60px) translateX(-5px); opacity: 0.5; }
    75%      { transform: translateY(-30px) translateX(15px); opacity: 0.7; }
}

@keyframes gradient-shift {
    0%   { background-position: 0% 50%; }
    50%  { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

@keyframes title-reveal {
    from { opacity: 0; transform: translateY(20px); filter: blur(8px); }
    to   { opacity: 1; transform: translateY(0); filter: blur(0); }
}

@keyframes stat-pulse {
    0%, 100% { text-shadow: 0 0 0 transparent; }
    50%      { text-shadow: 0 0 20px rgba(37, 99, 235, 0.30); }
}

@keyframes glow-drift {
    from { transform: translate(0, 0) scale(1); }
    to   { transform: translate(30px, 20px) scale(1.1); }
}

@keyframes spin {
    0%   { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* ===== 滚动渐显动画 ===== */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity var(--duration-slower) var(--ease-out),
                transform var(--duration-slower) var(--ease-out);
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* ===== 毛玻璃导航栏 ===== */
.navbar {
    transition: background-color var(--duration-slow) var(--ease-default),
                backdrop-filter var(--duration-slow) var(--ease-default),
                box-shadow var(--duration-slow) var(--ease-default),
                border-color var(--duration-slow) var(--ease-default);
    background-color: transparent;
    backdrop-filter: blur(0px);
    -webkit-backdrop-filter: blur(0px);
    border-bottom: 1px solid transparent;
}

.navbar.scrolled {
    background-color: rgba(255, 255, 255, 0.55);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    box-shadow: var(--shadow-sm);
    border-bottom: 1px solid rgba(226, 232, 240, 0.6);
}

/* 导航栏 Logo 图片样式：透明背景 + 投影 */
.nav-logo-img {
    background-color: transparent !important;
    border: none !important;
    outline: none !important;
    filter: drop-shadow(0 1px 2px rgba(0,0,0,0.08));
    transition: transform 0.2s var(--ease-default), filter 0.2s var(--ease-default);
}
.nav-logo-img:hover {
    transform: scale(1.04);
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.12));
}

/* 后台 Logo 预览棋盘格背景（展示透明背景效果） */
.logo-preview-bg {
    background-color: #fff;
    background-image:
        linear-gradient(45deg, #e0e0e0 25%, transparent 25%),
        linear-gradient(-45deg, #e0e0e0 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, #e0e0e0 75%),
        linear-gradient(-45deg, transparent 75%, #e0e0e0 75%);
    background-size: 16px 16px;
    background-position: 0 0, 0 8px, 8px -8px, -8px 0px;
    border: 1px solid #d1d5db;
}

/* 滚动后导航栏文字强制变深色（覆盖:not(.scrolled)的白色） */
.navbar.scrolled .nav-link,
.navbar.scrolled .text-gray-800,
.navbar.scrolled .text-gray-600,
.navbar.scrolled .text-gray-700 {
    color: #374151 !important;
}
.navbar.scrolled .nav-link.active,
.navbar.scrolled .nav-link:hover {
    color: #2563EB !important;
}
.navbar.scrolled .nav-link::after {
    background: #2563EB;
}

.navbar:not(.scrolled) {
    background-color: transparent;
}

/* Hero 页面：未滚动时导航栏文字白色（适配深色 Banner 背景） */
.navbar:not(.scrolled) .nav-link {
    color: rgba(255, 255, 255, 0.80) !important;
}
.navbar:not(.scrolled) .nav-link.active {
    color: #FFFFFF !important;
}
.navbar:not(.scrolled) .nav-link:hover {
    color: #FFFFFF !important;
}
.navbar:not(.scrolled) .nav-link::after {
    background: rgba(255, 255, 255, 0.9);
}
.navbar:not(.scrolled) .text-gray-800,
.navbar:not(.scrolled) .text-gray-600,
.navbar:not(.scrolled) .text-gray-700 {
    color: rgba(255, 255, 255, 0.95) !important;
}

/* 透明导航栏下汉堡菜单按钮白色 */
.navbar:not(.scrolled) #menuBtn {
    color: rgba(255, 255, 255, 0.90) !important;
}
.navbar:not(.scrolled) #menuBtn:hover {
    color: #FFFFFF !important;
}

/* 滚动后导航栏下汉堡菜单按钮深色 */
.navbar.scrolled #menuBtn {
    color: #374151 !important;
}
.navbar.scrolled #menuBtn:hover {
    color: #2563EB !important;
}

/* 非 Hero 页面导航栏始终半透明毛玻璃 */
.navbar.navbar-solid:not(.scrolled) {
    background-color: rgba(255, 255, 255, 0.70);
    backdrop-filter: blur(16px) saturate(160%);
    -webkit-backdrop-filter: blur(16px) saturate(160%);
    border-bottom: 1px solid rgba(226, 232, 240, 0.5);
}

/* 非 Hero 页面（navbar-solid）文字强制深色（白底白字问题修复） */
.navbar.navbar-solid:not(.scrolled) .nav-link,
.navbar.navbar-solid:not(.scrolled) .text-gray-800,
.navbar.navbar-solid:not(.scrolled) .text-gray-600,
.navbar.navbar-solid:not(.scrolled) .text-gray-700 {
    color: #374151 !important;
}
.navbar.navbar-solid:not(.scrolled) .nav-link.active,
.navbar.navbar-solid:not(.scrolled) .nav-link:hover {
    color: #2563EB !important;
}
.navbar.navbar-solid:not(.scrolled) .nav-link::after {
    background: #2563EB;
}
.navbar.navbar-solid:not(.scrolled) #menuBtn {
    color: #374151 !important;
}
.navbar.navbar-solid:not(.scrolled) #menuBtn:hover {
    color: #2563EB !important;
}

/* 导航链接下划线动画 */
.navbar .nav-link {
    position: relative;
    transition: color var(--duration-fast) var(--ease-default);
}

.navbar .nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    border-radius: 1px;
    transition: width var(--duration-normal) var(--ease-default),
                left var(--duration-normal) var(--ease-default);
}

.navbar .nav-link:hover::after,
.navbar .nav-link.active::after {
    width: 100%;
    left: 0;
}

/* ===== 渐变文字 ===== */
.gradient-text {
    background: var(--gradient-text);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
}

.gradient-text-animated {
    background: var(--gradient-text);
    background-size: 200% auto;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
    animation: gradient-shift 6s var(--ease-default) infinite;
}

/* ===== 按钮（渐变+波纹+上浮） ===== */
.btn-primary {
    position: relative;
    overflow: hidden;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    background: var(--gradient-primary);
    color: #FFFFFF;
    padding: var(--space-3) var(--space-8);
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.9375rem;
    line-height: 1;
    border: none;
    cursor: pointer;
    transition: transform var(--duration-normal) var(--ease-spring),
                box-shadow var(--duration-normal) var(--ease-default),
                filter var(--duration-fast) var(--ease-default);
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-brand);
    filter: brightness(1.08);
}

.btn-primary:active {
    transform: translateY(-1px) scale(0.98);
    box-shadow: var(--shadow-md);
}

.btn-primary .ripple {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    transform: scale(0);
    animation: ripple-spread var(--duration-slow) var(--ease-out) forwards;
    pointer-events: none;
}

/* ===== 次级按钮 ===== */
.btn-secondary {
    position: relative;
    overflow: hidden;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    background: transparent;
    color: var(--color-primary);
    padding: var(--space-3) var(--space-8);
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.9375rem;
    line-height: 1;
    border: 1.5px solid var(--color-border-strong);
    cursor: pointer;
    transition: transform var(--duration-normal) var(--ease-spring),
                border-color var(--duration-fast) var(--ease-default),
                color var(--duration-fast) var(--ease-default),
                background-color var(--duration-fast) var(--ease-default),
                box-shadow var(--duration-normal) var(--ease-default);
}

.btn-secondary:hover {
    transform: translateY(-3px);
    border-color: var(--color-primary);
    background-color: var(--color-primary);
    color: #FFFFFF;
    box-shadow: var(--shadow-brand);
}

.btn-secondary:active {
    transform: translateY(-1px) scale(0.98);
}

.btn-secondary .ripple {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    transform: scale(0);
    animation: ripple-spread var(--duration-slow) var(--ease-out) forwards;
    pointer-events: none;
}

/* ===== CTA 白色按钮 ===== */
.btn-cta-white {
    position: relative;
    overflow: hidden;
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    background: #FFFFFF;
    color: var(--color-primary);
    padding: var(--space-3) var(--space-8);
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.9375rem;
    border: none;
    cursor: pointer;
    box-shadow: var(--shadow-md);
    transition: transform var(--duration-normal) var(--ease-spring),
                box-shadow var(--duration-normal) var(--ease-default),
                filter var(--duration-fast) var(--ease-default);
}

.btn-cta-white:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
    filter: brightness(0.97);
}

.btn-cta-white:active {
    transform: translateY(-1px) scale(0.98);
}

.btn-cta-white .ripple {
    position: absolute;
    border-radius: 50%;
    background: rgba(37, 99, 235, 0.3);
    transform: scale(0);
    animation: ripple-spread var(--duration-slow) var(--ease-out) forwards;
    pointer-events: none;
}

/* ===== 3D 倾斜卡片 ===== */
.tilt-card {
    position: relative;
    transform-style: preserve-3d;
    transition: transform var(--duration-normal) var(--ease-out),
                box-shadow var(--duration-normal) var(--ease-default);
    will-change: transform;
}

.tilt-card::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    padding: 1.5px;
    background: var(--gradient-glow);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0;
    transition: opacity var(--duration-normal) var(--ease-default);
    pointer-events: none;
    z-index: 1;
}

.tilt-card:hover::before {
    opacity: 1;
}

.tilt-card:hover {
    box-shadow: var(--shadow-glow);
}

.tilt-card .tilt-content {
    transform: translateZ(30px);
    transform-style: preserve-3d;
}

.tilt-card .tilt-icon {
    transform: translateZ(50px);
    transform-style: preserve-3d;
    transition: transform var(--duration-normal) var(--ease-out);
}

/* ===== 通用卡片悬停 ===== */
.card-hover {
    transition: transform var(--duration-normal) var(--ease-default),
                box-shadow var(--duration-normal) var(--ease-default),
                border-color var(--duration-normal) var(--ease-default);
    border: 1px solid var(--color-border);
}

.card-hover:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(37, 99, 235, 0.25);
}

/* ===== 合作伙伴品牌卡片 ===== */
.partner-card {
    text-align: center;
    min-height: 140px;
    transition: transform var(--duration-normal) var(--ease-default),
                box-shadow var(--duration-normal) var(--ease-default),
                border-color var(--duration-normal) var(--ease-default);
}

.partner-icon-wrap {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 4px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transition: transform var(--duration-normal) var(--ease-default);
}

/* 合作伙伴图片 */
.partner-logo-wrap {
    width: 100%;
    height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 4px;
}

.partner-logo-img {
    width: auto;
    height: auto;
    max-width: 180px;
    max-height: 80px;
    object-fit: contain;
    display: block;
    transition: transform var(--duration-normal) var(--ease-default);
}

.partner-card:hover .partner-logo-img {
    transform: scale(1.05);
}

.partner-card:hover .partner-icon-wrap {
    transform: scale(1.08);
}

.partner-icon-svg {
    width: 32px;
    height: 32px;
}

.partner-icon-text {
    color: #fff;
    font-size: 22px;
    font-weight: 700;
    line-height: 1;
}

/* ===== 表单输入框（升级） ===== */
.form-input {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-family: var(--font-body);
    color: var(--color-text-primary);
    background: var(--color-surface);
    outline: none;
    transition: border-color var(--duration-fast) var(--ease-default),
                box-shadow var(--duration-fast) var(--ease-default),
                background-color var(--duration-fast) var(--ease-default);
}

.form-input::placeholder {
    color: var(--color-text-muted);
}

.form-input:hover {
    border-color: var(--color-border-strong);
}

.form-input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.10);
    background: var(--color-surface);
}

/* ===== 技术标签 ===== */
.tech-tag {
    display: inline-flex;
    align-items: center;
    padding: var(--space-1) var(--space-3);
    background: var(--color-bg-muted);
    color: var(--color-primary);
    border: 1px solid rgba(37, 99, 235, 0.15);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 500;
    margin: var(--space-1);
    transition: all var(--duration-fast) var(--ease-default);
}

.tech-tag:hover {
    background: rgba(37, 99, 235, 0.08);
    border-color: rgba(37, 99, 235, 0.30);
    transform: translateY(-1px);
}

/* ===== 统计数字（渐变文字） ===== */
.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    line-height: 1;
    letter-spacing: -0.02em;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
}


/* ===== Hero 区域升级 ===== */
.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
    background: var(--gradient-hero);
}

.hero-particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
}

.hero-particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: rgba(255, 255, 255, 0.4);
    border-radius: 50%;
    animation: particle-float 8s ease-in-out infinite;
}

.hero-grid-overlay {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
    z-index: 1;
}

.hero-glow-1 {
    position: absolute;
    top: -20%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.25) 0%, transparent 70%);
    border-radius: 50%;
    z-index: 1;
    animation: glow-drift 12s ease-in-out infinite alternate;
}

.hero-glow-2 {
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(14, 165, 233, 0.20) 0%, transparent 70%);
    border-radius: 50%;
    z-index: 1;
    animation: glow-drift 15s ease-in-out infinite alternate-reverse;
}

.hero-content {
    position: relative;
    z-index: 10;
    text-align: center;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.02em;
    color: #FFFFFF;
    margin-bottom: var(--space-6);
    animation: title-reveal 0.8s var(--ease-out) both;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: var(--space-8);
    animation: title-reveal 0.8s var(--ease-out) 0.15s both;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-4);
    justify-content: center;
    animation: title-reveal 0.8s var(--ease-out) 0.3s both;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background: rgba(255, 255, 255, 0.10);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.20);
    border-radius: var(--radius-full);
    color: rgba(255, 255, 255, 0.90);
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: var(--space-6);
    animation: title-reveal 0.8s var(--ease-out) both;
}

/* ===== Hero 渐变背景（CTA 区域） ===== */
.hero-gradient {
    background: var(--gradient-cta);
    position: relative;
    overflow: hidden;
}

.hero-gradient::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.hero-gradient::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(59,130,246,0.15) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

/* ===== 页面 Banner ===== */
.page-banner {
    background: var(--gradient-cta);
    position: relative;
    overflow: hidden;
}

/* ===== 时间轴 ===== */
.timeline-item {
    position: relative;
    padding-left: 40px;
    padding-bottom: 40px;
    border-left: 2px solid var(--color-border);
}

.timeline-item:last-child {
    border-left: 2px solid transparent;
    padding-bottom: 0;
}

.timeline-dot {
    position: absolute;
    left: -9px;
    top: 0;
    width: 16px;
    height: 16px;
    background: var(--color-primary);
    border-radius: 50%;
    border: 3px solid var(--color-bg-base);
    box-shadow: 0 0 0 2px var(--color-primary);
}

/* ===== 滚动条美化 ===== */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg-muted);
}

::-webkit-scrollbar-thumb {
    background: var(--color-border-strong);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-text-muted);
}

/* ===== 移动端汉堡菜单 ===== */
.mobile-menu {
    display: none;
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.12);
    padding: 0.75rem 1rem 1rem;
    z-index: 49;
    border-radius: 0 0 20px 20px;
    opacity: 0;
    transform: translateY(-8px);
    transition: opacity 0.25s ease, transform 0.25s ease;
}

.mobile-menu.active {
    display: block;
    opacity: 1;
    transform: translateY(0);
}

.mobile-menu a {
    display: block;
    padding: 0.875rem 1rem;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 500;
    color: #4B5563;
    transition: all 0.2s ease;
}

.mobile-menu a:hover,
.mobile-menu a:active {
    background: #F3F4F6;
    color: #2563EB;
}

.mobile-menu a.active-nav {
    background: #EFF6FF;
    color: #2563EB;
    font-weight: 600;
}

/* ===== 后台管理样式 ===== */
.admin-sidebar {
    min-height: calc(100vh - 64px);
    background: #1F2937;
}

.admin-sidebar a {
    display: block;
    padding: 12px 24px;
    color: #9CA3AF;
    text-decoration: none;
    transition: all 0.2s;
}

.admin-sidebar a:hover,
.admin-sidebar a.active {
    background: var(--color-primary);
    color: #FFFFFF;
}

.admin-card {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
}

/* ===== 加载动画 ===== */
.spinner {
    border: 3px solid var(--color-border);
    border-top: 3px solid var(--color-primary);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
}

/* ===== 提示消息 ===== */
.toast {
    position: fixed;
    top: 80px;
    right: 20px;
    padding: 16px 24px;
    border-radius: var(--radius-md);
    color: #FFFFFF;
    font-weight: 500;
    z-index: 9999;
    opacity: 0;
    transform: translateX(100%);
    transition: all 0.3s ease;
}

.toast.show {
    opacity: 1;
    transform: translateX(0);
}

.toast.success { background: var(--color-success); }
.toast.error   { background: var(--color-error); }

/* ===== 首页轮播 Banner ===== */
.hero-carousel {
    position: relative;
    width: 100%;
    overflow: hidden;
}

.hero-carousel-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1s ease-in-out;
    z-index: 1;
}

.hero-carousel-slide.active {
    opacity: 1;
    z-index: 2;
}

.hero-carousel-slide-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
}

.hero-carousel-slide-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.35);
}

.hero-carousel-content {
    position: relative;
    z-index: 3;
}

/* Hero Banner 全屏适配 */
#heroCarousel {
    min-height: 100vh !important;
}
.hero-carousel {
    min-height: 100vh;
}
.hero-carousel-slide {
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
}
.hero-carousel-slide-bg,
.hero-carousel-slide-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}
.hero-carousel-content {
    width: 100%;
    padding-top: 80px;
    padding-bottom: 80px;
    text-align: center;
}

.hero-carousel-dots {
    position: absolute;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 10;
}

.hero-carousel-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.4);
    cursor: pointer;
    transition: all 0.3s ease;
    border: 2px solid rgba(255, 255, 255, 0.6);
}

.hero-carousel-dot.active {
    background: #FFFFFF;
    width: 36px;
    border-radius: 6px;
}

.hero-carousel-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 10;
    transition: all 0.3s ease;
    color: #FFFFFF;
}

.hero-carousel-arrow:hover {
    background: rgba(255, 255, 255, 0.3);
}

.hero-carousel-arrow.prev { left: 24px; }
.hero-carousel-arrow.next { right: 24px; }

/* ===== Banner 底部服务快捷入口 ===== */
.hero-quick-services {
    position: absolute;
    bottom: 28px;
    left: 0;
    right: 0;
    z-index: 10;
    padding: 0 1rem;
    display: flex;
    justify-content: center;
    gap: 1rem;
    pointer-events: none;
}

.hero-quick-card {
    pointer-events: auto;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 1.25rem;
    background: rgba(255, 255, 255, 0.12);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border: 1px solid rgba(255, 255, 255, 0.20);
    border-radius: 16px;
    color: #fff;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.22, 1, 0.36, 1);
    cursor: pointer;
    max-width: 340px;
    flex: 1 1 0;
    min-width: 0;
    transform: translateY(0);
    opacity: 0.95;
}

.hero-quick-card:hover {
    transform: translateY(-6px);
    opacity: 1;
    background: rgba(255, 255, 255, 0.18);
    border-color: rgba(255, 255, 255, 0.35);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.2);
}

.hero-quick-icon {
    flex-shrink: 0;
    width: 42px;
    height: 42px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.15);
    color: #fff;
    transition: all 0.3s ease;
}

.hero-quick-card:hover .hero-quick-icon {
    background: var(--svc-color, #2563EB);
    box-shadow: 0 4px 16px rgba(37, 99, 235, 0.4);
}

.hero-quick-text {
    flex: 1;
    min-width: 0;
}

.hero-quick-title {
    font-size: 0.9375rem;
    font-weight: 600;
    color: #fff;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-bottom: 2px;
}

.hero-quick-desc {
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.70);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.hero-quick-arrow {
    flex-shrink: 0;
    color: rgba(255, 255, 255, 0.50);
    transition: all 0.3s ease;
}

.hero-quick-card:hover .hero-quick-arrow {
    color: #fff;
    transform: translateX(4px);
}

/* 移动端 */
@media (max-width: 768px) {
    .hero-quick-services {
        flex-direction: column;
        gap: 0.5rem;
        padding: 0 1rem;
        bottom: 1rem;
    }

    .hero-quick-card {
        transform: translateY(0);
        max-width: 100%;
        padding: 0.75rem 1rem;
    }

    .hero-quick-desc {
        display: none;
    }
}

/* ====================================================================
   响应式适配
   ==================================================================== */

/* 移动端字号缩小 */
@media (max-width: 768px) {
    .text-display { font-size: 2rem; }
    .text-h1 { font-size: 1.75rem; }
    .text-h2 { font-size: 1.5rem; }
    .text-h3 { font-size: 1.25rem; }
    .text-stat { font-size: 1.75rem; }
    .hero-title { font-size: 2rem; }
    .stat-number { font-size: 1.75rem; }

    .py-20 {
        padding-top: 3rem !important;
        padding-bottom: 3rem !important;
    }

    #heroCarousel {
        min-height: 90vh !important;
    }
    .hero-carousel-content {
        min-height: 90vh !important;
        padding-top: 6rem !important;
        padding-bottom: 4rem !important;
    }
    .hero-carousel-content h1 {
        font-size: 1.75rem !important;
    }
    .hero-carousel-content p {
        font-size: 0.95rem !important;
    }
    .hero-carousel-arrow {
        width: 36px;
        height: 36px;
    }
    .hero-carousel-arrow.prev { left: 12px; }
    .hero-carousel-arrow.next { right: 12px; }
    .hero-carousel-content a {
        padding: 8px 20px;
        font-size: 0.875rem;
    }
    .hero-carousel-dots {
        bottom: 16px;
    }

    footer .grid {
        gap: 2rem;
    }
    footer.py-16 {
        padding-top: 3rem !important;
        padding-bottom: 3rem !important;
    }

    .page-banner {
        padding-top: 6rem;
        padding-bottom: 2rem;
    }
    .page-banner h1 {
        font-size: 1.75rem;
    }

    .form-input {
        font-size: 16px;
    }

    .toast {
        left: 1rem;
        right: 1rem;
        max-width: none;
        text-align: center;
    }

    .admin-top-bar .admin-top-extra {
        display: none;
    }

    /* 手机端导航栏优化 */
    .navbar {
        background-color: rgba(255, 255, 255, 0.85) !important;
        backdrop-filter: blur(16px) saturate(180%) !important;
        -webkit-backdrop-filter: blur(16px) saturate(180%) !important;
        border-bottom: 1px solid rgba(226, 232, 240, 0.5) !important;
        box-shadow: 0 1px 3px rgba(0,0,0,0.05) !important;
    }
    .navbar:not(.scrolled) .nav-link,
    .navbar:not(.scrolled) .text-gray-800,
    .navbar:not(.scrolled) .text-gray-600,
    .navbar:not(.scrolled) .text-gray-700 {
        color: #374151 !important;
    }
    .navbar:not(.scrolled) .nav-link.active,
    .navbar:not(.scrolled) .nav-link:hover {
        color: #2563EB !important;
    }
    .navbar:not(.scrolled) #menuBtn {
        color: #374151 !important;
    }
    .navbar:not(.scrolled) .nav-link::after {
        background: #2563EB;
    }

    /* 移动端滚动后 / navbar-solid 文字也强制深色 */
    .navbar.scrolled .nav-link,
    .navbar.scrolled .text-gray-800,
    .navbar.scrolled .text-gray-600,
    .navbar.scrolled .text-gray-700,
    .navbar.navbar-solid:not(.scrolled) .nav-link,
    .navbar.navbar-solid:not(.scrolled) .text-gray-800,
    .navbar.navbar-solid:not(.scrolled) .text-gray-600,
    .navbar.navbar-solid:not(.scrolled) .text-gray-700 {
        color: #374151 !important;
    }
    .navbar.scrolled .nav-link.active,
    .navbar.scrolled .nav-link:hover,
    .navbar.navbar-solid:not(.scrolled) .nav-link.active,
    .navbar.navbar-solid:not(.scrolled) .nav-link:hover {
        color: #2563EB !important;
    }
    .navbar.scrolled .nav-link::after,
    .navbar.navbar-solid:not(.scrolled) .nav-link::after {
        background: #2563EB;
    }
    .navbar.scrolled #menuBtn,
    .navbar.navbar-solid:not(.scrolled) #menuBtn {
        color: #374151 !important;
    }

    /* 手机端菜单面板 */
    .mobile-menu {
        top: 64px;
        border-radius: 0 0 20px 20px;
        max-height: calc(100vh - 64px);
        overflow-y: auto;
    }

    .admin-sidebar {
        position: fixed;
        top: 64px;
        left: 0;
        bottom: 0;
        z-index: 100;
        transform: translateX(-100%);
        transition: transform 0.3s ease;
        width: 240px;
    }
    .admin-sidebar.mobile-open {
        transform: translateX(0);
    }
    .admin-main-content {
        margin-left: 0 !important;
        padding: 1rem !important;
    }
    .sidebar-overlay {
        display: none;
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0,0,0,0.4);
        z-index: 99;
    }
    .sidebar-overlay.show {
        display: block;
    }
    .admin-card {
        padding: 16px;
        margin-bottom: 16px;
    }
    .admin-card .grid.grid-cols-2,
    .admin-card .grid.grid-cols-3,
    .admin-card .grid.grid-cols-4 {
        grid-template-columns: 1fr;
    }

    #staticMapContainer,
    #baiduMapContainer {
        height: 300px !important;
    }
}

/* 手机端（375px 以下） */
@media (max-width: 375px) {
    #heroCarousel {
        min-height: 85vh !important;
    }
    .hero-carousel-content {
        min-height: 85vh !important;
    }
    .hero-carousel-content h1 {
        font-size: 1.5rem !important;
    }
    .hero-carousel-content .flex-wrap {
        flex-direction: column;
    }
    .hero-carousel-content a {
        width: 100%;
        text-align: center;
    }
}

/* 大屏桌面端微调 */
@media (min-width: 1024px) {
    .admin-sidebar {
        transform: none;
    }
}

/* ====================================================================
   微信端 / 移动端浏览器兼容优化
   ==================================================================== */

/* 防止微信自动放大字体破坏布局 */
html {
    -webkit-text-size-adjust: 100% !important;
    text-size-adjust: 100% !important;
}

/* 移除点击时的高亮蓝色背景 */
* {
    -webkit-tap-highlight-color: transparent;
    -webkit-touch-callout: none;
}

/* 禁止长按弹出菜单（可选，提升原生感） */
a, img, button {
    -webkit-user-drag: none;
    -webkit-user-select: none;
    user-select: none;
}

/* 允许输入框和文本区域选择 */
input, textarea, .selectable {
    -webkit-user-select: auto;
    user-select: auto;
}

/* 微信 X5 内核：fixed 定位元素 GPU 加速，避免抖动 */
.navbar, .mobile-menu, .toast {
    -webkit-transform: translateZ(0);
    transform: translateZ(0);
    will-change: transform;
}

/* 微信端视口高度修复：使用 CSS 变量 --vh */
#heroCarousel,
.hero-carousel-content {
    min-height: 100vh;
    min-height: 100dvh;
    min-height: calc(var(--vh, 1vh) * 100);
}

/* 微信端表单输入框优化：防止聚焦时页面缩放 */
input, textarea, select {
    font-size: 16px !important;
}

/* 微信端弹性滚动优化 */
body {
    -webkit-overflow-scrolling: touch;
}

/* iOS 微信底部安全区域适配 */
@supports (padding-bottom: env(safe-area-inset-bottom)) {
    .mobile-menu {
        padding-bottom: env(safe-area-inset-bottom);
    }
    footer {
        padding-bottom: calc(2rem + env(safe-area-inset-bottom));
    }
}

/* 微信端横屏提示（可选） */
@media (orientation: landscape) and (max-height: 500px) {
    .landscape-hint {
        display: flex;
    }
}

/* ====================================================================
   导航下拉菜单（产品服务）
   ==================================================================== */

/* 桌面端 hover 下拉 */
.nav-dropdown {
    position: relative;
}

.nav-dropdown-trigger {
    display: flex;
    align-items: center;
    gap: 4px;
    cursor: pointer;
}

.nav-dropdown-trigger svg {
    transition: transform 0.25s ease;
    flex-shrink: 0;
    opacity: 0.6;
}

.nav-dropdown:hover .nav-dropdown-trigger svg {
    transform: rotate(180deg);
    opacity: 1;
}

.nav-dropdown-menu {
    position: absolute;
    top: 100%;
    left: -8px;
    transform: translateY(-6px);
    min-width: 200px;
    background: #FFFFFF;
    border-radius: 12px;
    box-shadow: 0 4px 6px -1px rgba(0,0,0,0.06), 0 10px 24px -4px rgba(0,0,0,0.08);
    border: 1px solid #EEF0F3;
    padding: 6px;
    margin-top: 4px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-6px);
    transition: opacity 0.18s ease, transform 0.18s ease, visibility 0.18s;
    z-index: 100;
}

.nav-dropdown:hover .nav-dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.nav-dropdown-menu a {
    display: block;
    padding: 9px 16px;
    border-radius: 8px;
    font-size: 0.9375rem;
    font-weight: 500;
    color: #4B5563;
    transition: background-color 0.15s ease, color 0.15s ease;
    white-space: nowrap;
}

.nav-dropdown-menu a:hover {
    background: #F5F7FA;
    color: #2563EB;
}

.nav-dropdown-menu a.active-sub {
    background: #EFF6FF;
    color: #2563EB;
    font-weight: 600;
}

/* ===== 移动端折叠子菜单 ===== */
.mobile-submenu-trigger {
    display: flex !important;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
}

.mobile-submenu-trigger svg {
    transition: transform var(--duration-normal) var(--ease-default);
    flex-shrink: 0;
    opacity: 0.6;
}

.mobile-submenu-trigger.expanded svg {
    transform: rotate(180deg);
}

.mobile-submenu-items {
    overflow: hidden;
    max-height: 0;
    transition: max-height var(--duration-slow) var(--ease-default);
}

.mobile-submenu-items.expanded {
    max-height: 320px;
}

.mobile-submenu-items a {
    padding-left: 2rem !important;
    font-size: 0.9375rem;
    color: #6B7280;
}

/* ===== 服务页功能卡片悬浮动效 ===== */
.service-feature-card {
    display: block;
    text-decoration: none;
    transition: transform 0.35s var(--ease-spring),
                box-shadow 0.35s var(--ease-default),
                border-color 0.35s var(--ease-default);
    cursor: pointer;
}

.service-feature-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 40px -6px rgba(15, 23, 42, 0.14), 0 6px 12px -4px rgba(15, 23, 42, 0.08);
    border-color: rgba(37, 99, 235, 0.25);
}

.service-feature-card:active {
    transform: translateY(-2px);
    transition-duration: 0.1s;
}

.service-feature-card .card-icon-wrap {
    transition: transform 0.35s var(--ease-spring), background-color 0.35s var(--ease-default);
}

.service-feature-card:hover .card-icon-wrap {
    transform: scale(1.08);
}

/* 蓝色主题卡片hover时图标背景变化 */
.service-feature-card:hover .card-icon-wrap.blue-icon {
    background-color: #DBEAFE;
}

/* 靛蓝色主题卡片hover时图标背景变化 */
.service-feature-card:hover .card-icon-wrap.indigo-icon {
    background-color: #E0E7FF;
}

/* 青色主题卡片hover时图标背景变化 */
.service-feature-card:hover .card-icon-wrap.cyan-icon {
    background-color: #CFFAFE;
}

/* ===== 定价卡片悬浮动效 ===== */
.pricing-card {
    transition: transform 0.4s var(--ease-spring),
                box-shadow 0.4s var(--ease-default);
    cursor: pointer;
}

.pricing-card:hover {
    transform: translateY(-6px) scale(1.03);
    box-shadow: 0 20px 48px -8px rgba(15, 23, 42, 0.22), 0 8px 16px -4px rgba(15, 23, 42, 0.12);
}

.pricing-card:active {
    transform: translateY(-2px) scale(1.01);
    transition-duration: 0.1s;
}

/* ===== 首页服务卡片悬浮动效 ===== */
.service-home-card {
    transition: transform 0.4s var(--ease-spring),
                box-shadow 0.4s var(--ease-default),
                border-color 0.4s var(--ease-default);
    text-decoration: none;
    cursor: pointer;
}

.service-home-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 24px 56px -12px rgba(15, 23, 42, 0.16), 0 12px 24px -8px rgba(15, 23, 42, 0.10);
    border-color: rgba(37, 99, 235, 0.20);
}

.service-home-card:active {
    transform: translateY(-3px);
    transition-duration: 0.1s;
}

.service-home-card .tilt-icon {
    transition: transform 0.4s var(--ease-spring), background-color 0.4s var(--ease-default);
}

.service-home-card:hover .tilt-icon {
    transform: scale(1.1);
}