/* ==================== 基础与变量 ==================== */
:root {
    --primary: #00a0d8;
    --primary-dark: #0085b3;
    --primary-light: #e6f7fc;
    --primary-soft: rgba(0, 160, 216, 0.08);
    --wechat: #07c160;
    --wechat-dark: #06a052;
    --wechat-light: #e8f8f0;
    --text: #1a202c;
    --text-secondary: #4a5568;
    --text-muted: #718096;
    --bg: #ffffff;
    --bg-soft: #f7fafc;
    --bg-warm: #fafbfc;
    --border: #e2e8f0;
    --border-soft: #edf2f7;
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.10);
    --shadow-xl: 0 24px 56px rgba(0, 0, 0, 0.14);
    --shadow-primary: 0 8px 24px rgba(0, 160, 216, 0.25);
    --shadow-wechat: 0 8px 24px rgba(7, 193, 96, 0.25);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-2xl: 32px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --header-h: 64px;
    --container: 1200px;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--header-h);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", Helvetica, Arial, sans-serif;
    margin: 0;
    padding: 0 0 80px;
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: inherit;
    text-decoration: none;
}

ul {
    margin: 0;
    padding: 0;
    list-style: none;
}

h1, h2, h3, h4 {
    margin: 0;
    line-height: 1.3;
    color: var(--text);
    font-weight: 700;
}

p {
    margin: 0;
}

button {
    font-family: inherit;
}

/* ==================== SEO 关键词区（屏幕外隐藏） ==================== */
.seo-keywords {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ==================== 滚动进度条 ==================== */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    width: 0;
    background: linear-gradient(90deg, var(--primary), var(--wechat));
    z-index: 1002;
    transition: width 0.1s ease-out;
    box-shadow: 0 0 8px rgba(0, 160, 216, 0.5);
}

/* ==================== 通用按钮 ==================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 999px;
    font-size: 15px;
    font-weight: 600;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    text-decoration: none;
    line-height: 1;
    white-space: nowrap;
}

.btn-lg {
    padding: 16px 32px;
    font-size: 16px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    box-shadow: var(--shadow-primary);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(0, 160, 216, 0.4);
}

.btn-primary svg {
    width: 16px;
    height: 16px;
    fill: currentColor;
    transition: transform 0.3s ease;
}

.btn-primary:hover svg {
    transform: translateX(3px);
}

.btn-ghost {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.btn-ghost:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-2px);
}

.btn-ghost svg {
    width: 18px;
    height: 18px;
    fill: currentColor;
    flex-shrink: 0;
}

.btn-ghost span {
    display: flex;
    flex-direction: column;
    gap: 2px;
    text-align: left;
}

.btn-ghost small {
    font-size: 11px;
    opacity: 0.85;
    font-weight: 400;
    letter-spacing: 0.05em;
}

.btn-ghost strong {
    font-size: 15px;
    font-weight: 700;
    letter-spacing: 0.02em;
}

/* ==================== Header ==================== */
header {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.04), 0 2px 12px rgba(0, 0, 0, 0.04);
    position: fixed;
    width: 100%;
    z-index: 1000;
    top: 0;
    left: 0;
    transition: var(--transition);
}

.header-container {
    max-width: var(--container);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 24px;
    height: var(--header-h);
}

.logo a {
    display: flex;
    align-items: center;
    transition: var(--transition);
}

.logo img {
    height: 32px;
    display: block;
    transition: var(--transition);
}

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

nav {
    display: flex;
    gap: 4px;
}

nav a {
    color: var(--text-secondary);
    padding: 8px 18px;
    font-size: 15px;
    font-weight: 500;
    border-radius: 8px;
    transition: var(--transition);
    position: relative;
}

nav a:hover {
    color: var(--primary);
    background: var(--primary-light);
}

nav a.active {
    color: var(--primary);
    background: var(--primary-light);
}

/* ==================== Hero ==================== */
.hero {
    background-image:
        linear-gradient(135deg, rgba(0, 20, 50, 0.85) 0%, rgba(0, 60, 110, 0.6) 50%, rgba(0, 30, 70, 0.8) 100%),
        url('../images/bj.jpg');
    background-size: cover;
    background-position: center;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-align: center;
    padding: calc(var(--header-h) + 40px) 24px 80px;
    position: relative;
    overflow: hidden;
    isolation: isolate;
}

.hero-decorations {
    position: absolute;
    inset: 0;
    z-index: 0;
    pointer-events: none;
}

.hero-blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.45;
    pointer-events: none;
}

.hero-blob-1 {
    width: 500px;
    height: 500px;
    background: var(--primary);
    top: -150px;
    left: -150px;
    animation: floatBlob 12s ease-in-out infinite;
}

.hero-blob-2 {
    width: 400px;
    height: 400px;
    background: var(--wechat);
    bottom: -100px;
    right: -100px;
    animation: floatBlob 15s ease-in-out infinite reverse;
    opacity: 0.3;
}

.hero-blob-3 {
    width: 250px;
    height: 250px;
    background: #6366f1;
    top: 40%;
    right: 20%;
    animation: floatBlob 18s ease-in-out infinite;
    opacity: 0.25;
}

.hero-grid {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    opacity: 0.6;
}

@keyframes floatBlob {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(40px, -30px) scale(1.05); }
    66% { transform: translate(-30px, 40px) scale(0.95); }
}

.hero-content {
    max-width: 880px;
    position: relative;
    z-index: 1;
    animation: heroFadeUp 0.8s ease both;
}

.hero-eyebrow {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.3em;
    color: rgba(255, 255, 255, 0.9);
    padding: 6px 18px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 999px;
    margin-bottom: 24px;
    animation: heroFadeUp 0.8s 0.1s ease both;
}

.hero h1 {
    font-size: clamp(2.25rem, 5.5vw, 3.75rem);
    font-weight: 800;
    margin: 0 0 24px;
    letter-spacing: -0.025em;
    line-height: 1.15;
    text-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
    animation: heroFadeUp 0.8s 0.2s ease both;
}

.gradient-text {
    background: linear-gradient(135deg, #00a0d8 0%, #07c160 50%, #00d4ff 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
    display: inline-block;
    background-size: 200% 200%;
    animation: gradientShift 6s ease infinite;
}

@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.hero p {
    font-size: clamp(1rem, 1.8vw, 1.15rem);
    opacity: 0.95;
    max-width: 640px;
    margin: 0 auto 32px;
    line-height: 1.7;
    text-shadow: 0 1px 8px rgba(0, 0, 0, 0.2);
    animation: heroFadeUp 0.8s 0.3s ease both;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    justify-content: center;
    margin-bottom: 40px;
    animation: heroFadeUp 0.8s 0.4s ease both;
}

.hero-stats {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 24px;
    margin-bottom: 32px;
    flex-wrap: wrap;
    animation: heroFadeUp 0.8s 0.5s ease both;
}

.hero-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 100px;
}

.hero-stat-num {
    font-size: clamp(24px, 3vw, 32px);
    font-weight: 800;
    color: white;
    line-height: 1;
    margin-bottom: 4px;
    text-shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
    background: linear-gradient(180deg, #ffffff 0%, #b3e5ff 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-stat-label {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.85);
    letter-spacing: 0.05em;
}

.hero-stat-divider {
    width: 1px;
    height: 36px;
    background: linear-gradient(180deg, transparent, rgba(255, 255, 255, 0.4), transparent);
}

.hero-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
    animation: heroFadeUp 0.8s 0.6s ease both;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 7px 14px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 999px;
    font-size: 13px;
    color: white;
    transition: var(--transition);
}

.hero-badge:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.hero-badge svg {
    width: 14px;
    height: 14px;
    fill: currentColor;
}

.hero-scroll {
    position: absolute;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    width: 28px;
    height: 44px;
    border: 2px solid rgba(255, 255, 255, 0.4);
    border-radius: 14px;
    display: flex;
    justify-content: center;
    padding-top: 8px;
    z-index: 2;
    transition: var(--transition);
}

.hero-scroll:hover {
    border-color: rgba(255, 255, 255, 0.8);
}

.hero-scroll span {
    width: 3px;
    height: 8px;
    background: white;
    border-radius: 2px;
    animation: scrollBounce 2s ease-in-out infinite;
}

@keyframes scrollBounce {
    0%, 100% { transform: translateY(0); opacity: 1; }
    50% { transform: translateY(12px); opacity: 0.3; }
}

@keyframes heroFadeUp {
    from {
        opacity: 0;
        transform: translateY(24px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ==================== Sections ==================== */
section {
    padding: 90px 0;
    position: relative;
}

section.alt {
    background: var(--bg-soft);
    position: relative;
}

section.alt::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(circle at 20% 20%, rgba(0, 160, 216, 0.04) 0%, transparent 40%),
        radial-gradient(circle at 80% 80%, rgba(7, 193, 96, 0.04) 0%, transparent 40%);
    pointer-events: none;
}

.container {
    max-width: var(--container);
    width: 90%;
    margin: 0 auto;
    position: relative;
}

.section-title {
    text-align: center;
    margin-bottom: 56px;
    animation: sectionFade 0.6s ease both;
}

.section-eyebrow {
    display: inline-block;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.3em;
    color: var(--primary);
    margin-bottom: 12px;
    padding: 4px 0;
    text-transform: uppercase;
}

.section-title h2 {
    font-size: clamp(1.875rem, 3.2vw, 2.5rem);
    font-weight: 800;
    margin: 0 0 14px;
    letter-spacing: -0.02em;
}

.section-title p {
    color: var(--text-muted);
    font-size: 16px;
    max-width: 600px;
    margin: 0 auto;
}

.section-title .accent {
    display: block;
    width: 48px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--wechat));
    border-radius: 999px;
    margin: 20px auto 0;
}

@keyframes sectionFade {
    from {
        opacity: 0;
        transform: translateY(16px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Reveal animation */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

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

/* Stagger for grid children */
.card-grid > .reveal:nth-child(1), .why-grid > .reveal:nth-child(1) { transition-delay: 0.05s; }
.card-grid > .reveal:nth-child(2), .why-grid > .reveal:nth-child(2) { transition-delay: 0.1s; }
.card-grid > .reveal:nth-child(3), .why-grid > .reveal:nth-child(3) { transition-delay: 0.15s; }
.card-grid > .reveal:nth-child(4), .why-grid > .reveal:nth-child(4) { transition-delay: 0.2s; }
.card-grid > .reveal:nth-child(5), .why-grid > .reveal:nth-child(5) { transition-delay: 0.25s; }
.card-grid > .reveal:nth-child(6), .why-grid > .reveal:nth-child(6) { transition-delay: 0.3s; }

/* ==================== Service Cards ==================== */
.card-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.card {
    background: white;
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-lg);
    padding: 36px 30px 28px;
    transition: var(--transition);
    list-style: none;
    position: relative;
    overflow: hidden;
    cursor: default;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--wechat));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.5s ease;
}

.card::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 100px;
    height: 100px;
    background: radial-gradient(circle at top right, var(--primary-soft), transparent 70%);
    opacity: 0;
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.card:hover::before {
    transform: scaleX(1);
}

.card:hover::after {
    opacity: 1;
}

.card-number {
    position: absolute;
    top: 22px;
    right: 28px;
    font-size: 56px;
    font-weight: 900;
    color: var(--bg-soft);
    line-height: 1;
    z-index: 0;
    transition: var(--transition);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    letter-spacing: -0.05em;
}

.card:hover .card-number {
    color: var(--primary-light);
    transform: translateX(-4px) scale(0.95);
}

.card-icon {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    background: linear-gradient(135deg, var(--primary-light), rgba(0, 160, 216, 0.15));
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 22px;
    transition: var(--transition);
    position: relative;
    z-index: 1;
}

.card:hover .card-icon {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    transform: scale(1.08) rotate(-6deg);
    box-shadow: var(--shadow-primary);
}

.card-icon svg {
    width: 28px;
    height: 28px;
    fill: currentColor;
}

.card h3 {
    margin: 0 0 12px;
    font-size: 19px;
    font-weight: 700;
    color: var(--text);
    position: relative;
    z-index: 1;
}

.card p {
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: 14px;
    margin-bottom: 18px;
    position: relative;
    z-index: 1;
}

.card-more {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--primary);
    font-size: 14px;
    font-weight: 600;
    transition: var(--transition);
    position: relative;
    z-index: 1;
}

.card-more svg {
    width: 14px;
    height: 14px;
    fill: currentColor;
    transition: transform 0.3s ease;
}

.card-more:hover {
    color: var(--primary-dark);
    gap: 10px;
}

.card-more:hover svg {
    transform: translateX(3px);
}

/* ==================== 6 卡底部"查看全部"链接 ==================== */
.services-more {
    text-align: center;
    margin-top: 40px;
}

.services-more-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    color: var(--primary);
    font-size: 15px;
    font-weight: 600;
    border: 1px solid var(--primary);
    border-radius: 999px;
    transition: var(--transition);
    background: white;
}

.services-more-link svg {
    width: 16px;
    height: 16px;
    fill: currentColor;
    transition: transform 0.3s ease;
}

.services-more-link:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-primary);
}

.services-more-link:hover svg {
    transform: translateY(2px);
}

/* ==================== 全部服务项目（标签云） ==================== */
.service-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
    margin-bottom: 40px;
}

.tab-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: white;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    border-radius: 999px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
    white-space: nowrap;
    line-height: 1;
}

.tab-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-light);
    transform: translateY(-1px);
}

.tab-btn.active {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    border-color: transparent;
    box-shadow: var(--shadow-primary);
}

.tab-count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 22px;
    height: 22px;
    padding: 0 7px;
    background: var(--bg-soft);
    color: var(--text-muted);
    border-radius: 999px;
    font-size: 11px;
    font-weight: 700;
    transition: var(--transition);
}

.tab-btn.active .tab-count {
    background: rgba(255, 255, 255, 0.25);
    color: white;
}

.service-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
    max-width: 1100px;
    margin: 0 auto 48px;
    min-height: 200px;
}

.service-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 11px 18px;
    background: white;
    border: 1px solid var(--border-soft);
    color: var(--text);
    border-radius: 12px;
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    animation: tagFadeIn 0.5s ease both;
    line-height: 1.3;
    white-space: nowrap;
}

.service-tag::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 3px;
    height: 100%;
    background: linear-gradient(180deg, var(--primary), var(--wechat));
    transform: scaleY(0);
    transform-origin: bottom;
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.service-tag::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--primary-light), var(--wechat-light));
    opacity: 0;
    transition: var(--transition);
    pointer-events: none;
    z-index: 0;
}

.tag-name,
.tag-hot,
.tag-arrow {
    position: relative;
    z-index: 1;
}

.service-tag:hover {
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    padding-left: 22px;
}

.service-tag:hover::before {
    transform: scaleY(1);
    transform-origin: top;
}

.service-tag:hover::after {
    opacity: 1;
}

.tag-hot {
    display: inline-flex;
    align-items: center;
    padding: 1px 6px;
    background: linear-gradient(135deg, #ff6b6b, #ee5a5a);
    color: white;
    font-size: 9px;
    font-weight: 700;
    border-radius: 4px;
    letter-spacing: 0.05em;
    margin-left: 2px;
    line-height: 1.4;
}

.tag-arrow {
    width: 14px;
    height: 14px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    opacity: 0;
    transform: translateX(-6px);
    transition: var(--transition);
    font-weight: 700;
    font-size: 15px;
}

.service-tag:hover .tag-arrow {
    opacity: 1;
    transform: translateX(0);
}

.service-tag.hidden {
    display: none;
}

@keyframes tagFadeIn {
    from {
        opacity: 0;
        transform: translateY(8px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* Stagger animation for service tags */
.service-cloud > .service-tag:nth-child(1) { animation-delay: 0.02s; }
.service-cloud > .service-tag:nth-child(2) { animation-delay: 0.04s; }
.service-cloud > .service-tag:nth-child(3) { animation-delay: 0.06s; }
.service-cloud > .service-tag:nth-child(4) { animation-delay: 0.08s; }
.service-cloud > .service-tag:nth-child(5) { animation-delay: 0.1s; }
.service-cloud > .service-tag:nth-child(6) { animation-delay: 0.12s; }
.service-cloud > .service-tag:nth-child(7) { animation-delay: 0.14s; }
.service-cloud > .service-tag:nth-child(8) { animation-delay: 0.16s; }
.service-cloud > .service-tag:nth-child(9) { animation-delay: 0.18s; }
.service-cloud > .service-tag:nth-child(n+10) { animation-delay: 0.2s; }

/* ==================== 服务 CTA 框 ==================== */
.service-cta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    padding: 32px 40px;
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--wechat-light) 100%);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-soft);
    flex-wrap: wrap;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.service-cta::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 280px;
    height: 280px;
    background: radial-gradient(circle, var(--primary-soft), transparent 70%);
    pointer-events: none;
}

.service-cta::after {
    content: '';
    position: absolute;
    bottom: -50%;
    left: -10%;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(7, 193, 96, 0.08), transparent 70%);
    pointer-events: none;
}

.cta-content {
    position: relative;
    z-index: 1;
    flex: 1;
    min-width: 240px;
}

.service-cta h3 {
    font-size: 20px;
    margin: 0 0 6px;
    color: var(--text);
    font-weight: 700;
}

.service-cta p {
    color: var(--text-secondary);
    font-size: 14px;
    margin: 0;
}

.service-cta .btn {
    position: relative;
    z-index: 1;
    flex-shrink: 0;
}

/* ==================== Why Choose Us ==================== */
.why-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.why-card {
    text-align: center;
    padding: 40px 28px 36px;
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    border: 1px solid var(--border-soft);
}

.why-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 100%;
    background: linear-gradient(180deg, var(--primary-soft), transparent 50%);
    opacity: 0;
    transition: var(--transition);
    pointer-events: none;
}

.why-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
    border-color: transparent;
}

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

.why-icon-wrap {
    display: inline-block;
    position: relative;
    z-index: 1;
    margin-bottom: 20px;
}

.why-icon-wrap::before {
    content: '';
    position: absolute;
    inset: -8px;
    background: linear-gradient(135deg, var(--primary-light), var(--wechat-light));
    border-radius: 50%;
    opacity: 0;
    transition: var(--transition);
    z-index: -1;
}

.why-card:hover .why-icon-wrap::before {
    opacity: 1;
    transform: scale(1.1);
}

.why-icon {
    width: 72px;
    height: 72px;
    border-radius: 20px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    box-shadow: var(--shadow-primary);
    transition: var(--transition);
    transform: rotate(-5deg);
    position: relative;
}

.why-card:hover .why-icon {
    transform: rotate(0deg) scale(1.08);
    background: linear-gradient(135deg, var(--wechat), var(--wechat-dark));
    box-shadow: var(--shadow-wechat);
}

.why-icon svg {
    width: 34px;
    height: 34px;
    fill: currentColor;
}

.why-card h3 {
    font-size: 18px;
    font-weight: 700;
    margin: 0 0 10px;
    color: var(--text);
    position: relative;
    z-index: 1;
}

.why-card p {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.7;
    position: relative;
    z-index: 1;
}

/* ==================== About Section ==================== */
.about-content {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text p {
    text-indent: 2em;
    line-height: 1.9;
    color: var(--text-secondary);
    margin: 0 0 14px;
    font-size: 15px;
}

.about-features {
    margin: 24px 0 28px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.about-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    color: var(--text);
    font-size: 14px;
    font-weight: 500;
}

.about-features .check {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--wechat));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 700;
    flex-shrink: 0;
}

.about-visual {
    position: relative;
    height: 440px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.visual-blob {
    position: absolute;
    width: 320px;
    height: 320px;
    background: linear-gradient(135deg, var(--primary-light), var(--wechat-light));
    border-radius: 50%;
    filter: blur(40px);
    opacity: 0.6;
    z-index: 0;
}

.visual-card {
    position: absolute;
    background: white;
    padding: 18px 22px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    text-align: center;
    z-index: 1;
    transition: var(--transition);
    border: 1px solid var(--border-soft);
    min-width: 130px;
}

.visual-card:hover {
    transform: translateY(-4px) scale(1.05);
    box-shadow: var(--shadow-xl);
}

.visual-num {
    display: block;
    font-size: 28px;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary), var(--wechat));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1;
    margin-bottom: 4px;
}

.visual-label {
    font-size: 12px;
    color: var(--text-muted);
    letter-spacing: 0.05em;
}

.visual-card-1 {
    top: 0;
    left: 10%;
    animation: floatY 6s ease-in-out infinite;
}

.visual-card-2 {
    top: 0;
    right: 10%;
    animation: floatY 7s ease-in-out infinite reverse;
}

.visual-card-3 {
    bottom: 0;
    left: 15%;
    animation: floatY 8s ease-in-out infinite;
}

.visual-card-4 {
    bottom: 0;
    right: 10%;
    animation: floatY 5.5s ease-in-out infinite reverse;
}

@keyframes floatY {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-12px); }
}

/* ==================== Service Process ==================== */
.process-flow {
    display: grid;
    grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr;
    gap: 16px;
    align-items: center;
}

.process-step {
    text-align: center;
    position: relative;
}

.step-circle {
    width: 88px;
    height: 88px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 18px;
    box-shadow: var(--shadow-primary);
    transition: var(--transition);
    position: relative;
    z-index: 1;
}

.process-step:hover .step-circle {
    transform: scale(1.08) rotate(8deg);
    background: linear-gradient(135deg, var(--wechat), var(--wechat-dark));
    box-shadow: var(--shadow-wechat);
}

.step-circle::before {
    content: '';
    position: absolute;
    inset: -8px;
    border-radius: 50%;
    border: 2px dashed var(--primary-light);
    opacity: 0.5;
    animation: spin 16s linear infinite;
}

.process-step:hover .step-circle::before {
    border-color: var(--wechat-light);
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.step-num {
    font-size: 26px;
    font-weight: 800;
    line-height: 1;
    letter-spacing: -0.02em;
}

.step-icon {
    position: absolute;
    width: 18px;
    height: 18px;
    fill: white;
    bottom: 4px;
    right: 4px;
    background: var(--primary-dark);
    border-radius: 50%;
    padding: 3px;
    width: 24px;
    height: 24px;
}

.process-step h4 {
    font-size: 17px;
    font-weight: 700;
    margin: 0 0 6px;
    color: var(--text);
}

.process-step p {
    color: var(--text-muted);
    font-size: 13px;
    line-height: 1.5;
}

.step-line {
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--wechat));
    border-radius: 999px;
    position: relative;
}

.step-line::before,
.step-line::after {
    content: '';
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--primary);
}

.step-line::before { left: -4px; }
.step-line::after { right: -4px; background: var(--wechat); }

/* ==================== Contact Section ==================== */
.contact-container {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr;
    gap: 24px;
}

.contact-info {
    background: linear-gradient(145deg, #ffffff, #f8fafc);
    padding: 32px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-soft);
    display: flex;
    flex-direction: column;
}

.contact-info h3 {
    color: var(--primary);
    margin: 0 0 20px;
    font-size: 19px;
    font-weight: 700;
    position: relative;
    padding-bottom: 14px;
}

.contact-info h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 36px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), transparent);
    border-radius: 999px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    padding: 12px 14px;
    border-radius: 10px;
    transition: var(--transition);
    margin-bottom: 4px;
}

.contact-item:hover {
    background: var(--primary-light);
    transform: translateX(4px);
}

.contact-item-icon {
    width: 38px;
    height: 38px;
    border-radius: 10px;
    background: var(--primary-light);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    margin-right: 14px;
    transition: var(--transition);
}

.contact-item:hover .contact-item-icon {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    transform: scale(1.05);
    box-shadow: var(--shadow-primary);
}

.contact-item-icon svg {
    width: 18px;
    height: 18px;
    fill: currentColor;
}

.contact-item-label {
    color: var(--text-muted);
    font-size: 12px;
    margin-bottom: 2px;
    letter-spacing: 0.05em;
}

.contact-item-value {
    color: var(--text);
    font-weight: 500;
    font-size: 14px;
    line-height: 1.5;
    word-break: break-all;
}

.contact-item-value a {
    color: var(--text);
    transition: var(--transition);
}

.contact-item-value a:hover {
    color: var(--primary);
}

.qr-card {
    background: white;
    padding: 28px 22px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    text-align: center;
    border: 1px solid var(--border-soft);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.qr-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--wechat));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

.qr-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
    border-color: transparent;
}

.qr-card:hover::before {
    transform: scaleX(1);
}

.qr-card img {
    width: 150px;
    height: 150px;
    border-radius: var(--radius-sm);
    margin-bottom: 14px;
    padding: 6px;
    background: white;
    border: 1px solid var(--border-soft);
    transition: var(--transition);
}

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

.qr-card h4 {
    color: var(--text);
    font-size: 16px;
    margin: 0 0 4px;
    font-weight: 700;
}

.qr-card p {
    color: var(--text-muted);
    font-size: 12px;
    margin: 0;
}

/* ==================== Footer ==================== */
footer {
    background: linear-gradient(180deg, #1a202c 0%, #0f1419 100%);
    color: #a0aec0;
    padding: 60px 0 0;
    margin-top: 40px;
    position: relative;
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--wechat));
}

.footer-container {
    max-width: var(--container);
    width: 90%;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.3fr;
    gap: 40px;
    padding-bottom: 40px;
}

.footer-brand .footer-logo img {
    height: 32px;
    margin-bottom: 16px;
    filter: brightness(0) invert(1);
    opacity: 0.95;
}

.footer-brand p {
    color: #a0aec0;
    font-size: 13px;
    line-height: 1.8;
    margin: 0;
}

.footer-col h4 {
    color: white;
    font-size: 15px;
    font-weight: 600;
    margin: 6px 0 20px;
    position: relative;
    padding-bottom: 10px;
}

.footer-col h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 24px;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), transparent);
    border-radius: 999px;
}

.footer-col ul li {
    margin-bottom: 10px;
}

.footer-col ul li a {
    color: #a0aec0;
    font-size: 13px;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
}

.footer-col ul li a:hover {
    color: white;
    transform: translateX(4px);
}

.footer-contact li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    color: #a0aec0;
    font-size: 13px;
    line-height: 1.6;
    margin-bottom: 12px;
}

.footer-contact li svg {
    width: 16px;
    height: 16px;
    fill: var(--primary);
    flex-shrink: 0;
    margin-top: 2px;
}

.footer-contact li a {
    color: #a0aec0;
    transition: var(--transition);
}

.footer-contact li a:hover {
    color: white;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    padding: 24px 20px;
    text-align: center;
    font-size: 12px;
    color: #718096;
}

.footer-bottom p {
    margin: 4px 0;
}

.footer-bottom a {
    color: #a0aec0;
    text-decoration: none;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
}

.footer-bottom a:hover {
    color: white;
}

.footer-bottom img {
    vertical-align: middle;
    display: inline;
}

/* ==================== 右侧悬浮微信面板 ==================== */
.floating-panel {
    position: fixed;
    right: 20px;
    bottom: 110px;
    z-index: 999;
    width: 140px;
    background: #fff;
    border-radius: var(--radius-md);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
    padding: 16px 12px 14px;
    text-align: center;
    border: 1px solid var(--border-soft);
    animation: panelFadeIn 0.5s 0.5s ease both;
}

.floating-panel .panel-header {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 10px;
}

.floating-panel .panel-icon {
    width: 18px;
    height: 18px;
    fill: var(--wechat);
}

.floating-panel .panel-qr {
    width: 116px;
    height: 116px;
    margin: 0 auto;
    border-radius: 6px;
    overflow: hidden;
    background: #fafafa;
    border: 1px solid var(--border-soft);
}

.floating-panel .panel-qr img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.floating-panel .panel-tip {
    margin: 10px 0 0;
    font-size: 12px;
    color: var(--text-muted);
    line-height: 1.5;
}

.floating-panel .panel-tip strong {
    color: var(--wechat);
    font-weight: 700;
    display: block;
    margin-top: 2px;
}

.floating-panel .to-top {
    position: absolute;
    right: -10px;
    top: -10px;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.7);
    border: 2px solid #fff;
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: scale(0.8);
    transition: var(--transition);
    padding: 0;
    box-shadow: var(--shadow-md);
}

.floating-panel .to-top.show {
    opacity: 1;
    visibility: visible;
    transform: scale(1);
}

.floating-panel .to-top:hover {
    background: rgba(0, 0, 0, 0.9);
    transform: scale(1.08);
}

.floating-panel .to-top svg {
    width: 16px;
    height: 16px;
    fill: #fff;
}

@keyframes panelFadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ==================== 底部固定按钮栏 ==================== */
.bottom-bar {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 998;
    display: flex;
    background: #fff;
    box-shadow: 0 -4px 24px rgba(0, 0, 0, 0.08);
    border-top: 1px solid var(--border-soft);
}

.bottom-bar .bottom-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 16px;
    text-decoration: none;
    font-size: 14px;
    color: #fff;
    font-weight: 500;
    cursor: pointer;
    border: none;
    background: none;
    transition: filter 0.2s;
    text-align: left;
    line-height: 1.2;
    position: relative;
}

.bottom-bar .bottom-btn:hover {
    filter: brightness(1.05);
}

.bottom-bar .bottom-btn svg {
    width: 22px;
    height: 22px;
    fill: #fff;
    flex-shrink: 0;
}

.bottom-bar .bottom-btn-text {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.bottom-bar .bottom-btn strong {
    font-size: 16px;
    font-weight: 700;
    letter-spacing: 0.02em;
}

.bottom-bar .phone-btn {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
}

.bottom-bar .wechat-btn {
    background: linear-gradient(135deg, var(--wechat) 0%, var(--wechat-dark) 100%);
}

/* ==================== 微信二维码弹窗 ==================== */
.wechat-modal {
    position: fixed;
    inset: 0;
    z-index: 1001;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.wechat-modal.show {
    display: flex;
}

.wechat-modal .modal-mask {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.55);
    animation: fadeIn 0.25s ease;
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
}

.wechat-modal .modal-content {
    position: relative;
    background: #fff;
    border-radius: var(--radius-xl);
    padding: 32px 28px 28px;
    width: 100%;
    max-width: 380px;
    text-align: center;
    box-shadow: var(--shadow-xl);
    animation: scaleIn 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
}

.wechat-modal .modal-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--wechat), var(--wechat-dark));
}

.wechat-modal .modal-close {
    position: absolute;
    right: 14px;
    top: 14px;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--bg-soft);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    padding: 0;
}

.wechat-modal .modal-close:hover {
    background: var(--border);
    transform: rotate(90deg);
}

.wechat-modal .modal-close svg {
    width: 18px;
    height: 18px;
    fill: var(--text-secondary);
}

.wechat-modal h3 {
    color: var(--wechat);
    font-size: 22px;
    margin: 0 0 18px;
    font-weight: 700;
}

.wechat-modal .modal-qr {
    width: 220px;
    height: 220px;
    margin: 0 auto;
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-md);
    overflow: hidden;
    padding: 10px;
    background: #fff;
}

.wechat-modal .modal-qr img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.wechat-modal .modal-tip {
    margin: 18px 0 0;
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

.wechat-modal .modal-tip strong {
    color: var(--wechat);
    font-size: 17px;
    font-weight: 700;
    display: block;
    margin-top: 4px;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9) translateY(20px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

/* ==================== 自定义滚动条 ==================== */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

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

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--primary), var(--primary-dark));
    border-radius: 999px;
    border: 2px solid var(--bg-soft);
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, var(--primary-dark), var(--primary));
}

/* ==================== 响应式 ==================== */
@media (max-width: 1024px) {
    .contact-container {
        grid-template-columns: 1fr 1fr;
    }
    .contact-info {
        grid-column: 1 / -1;
    }
    .about-content {
        gap: 40px;
    }
    .about-features {
        grid-template-columns: 1fr;
    }
    .why-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .footer-container {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }
}

@media (max-width: 768px) {
    body {
        padding-bottom: 72px;
    }
    .header-container {
        padding: 10px 16px;
        height: 56px;
    }
    :root {
        --header-h: 56px;
    }
    .logo img {
        height: 26px;
    }
    nav a {
        padding: 6px 10px;
        font-size: 14px;
    }
    .hero {
        min-height: 480px;
        padding: calc(var(--header-h) + 32px) 20px 70px;
    }
    .hero-actions {
        flex-direction: column;
        align-items: stretch;
    }
    .hero-actions .btn {
        justify-content: center;
    }
    .hero-stats {
        gap: 16px;
    }
    .hero-stat {
        min-width: 80px;
    }
    .hero-stat-divider {
        height: 28px;
    }
    .hero-scroll {
        display: none;
    }
    section {
        padding: 60px 0;
    }
    .container {
        width: 92%;
    }
    .section-title {
        margin-bottom: 36px;
    }
    .card-grid {
        grid-template-columns: 1fr;
        gap: 18px;
    }
    .card {
        padding: 28px 24px 24px;
    }
    .card-icon {
        width: 50px;
        height: 50px;
    }
    .card-icon svg {
        width: 24px;
        height: 24px;
    }
    .card-number {
        font-size: 44px;
        top: 18px;
        right: 22px;
    }
    .why-grid {
        grid-template-columns: 1fr;
    }
    .why-card {
        padding: 32px 24px 28px;
    }
    .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .about-visual {
        height: 360px;
    }
    .process-flow {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    .step-line {
        width: 3px;
        height: 40px;
        background: linear-gradient(180deg, var(--primary), var(--wechat));
        margin: 0 auto;
        position: relative;
    }
    .step-line::before,
    .step-line::after {
        left: 50%;
        top: auto;
        transform: translateX(-50%);
    }
    .step-line::before { top: -4px; }
    .step-line::after { bottom: -4px; top: auto; }
    .contact-container {
        grid-template-columns: 1fr;
    }
    .contact-info {
        padding: 24px;
    }
    .qr-card img {
        width: 130px;
        height: 130px;
    }
    .floating-panel {
        display: none;
    }
    .bottom-bar .bottom-btn {
        padding: 10px 12px;
        gap: 8px;
    }
    .bottom-bar .bottom-btn svg {
        width: 20px;
        height: 20px;
    }
    .bottom-bar .bottom-btn-text {
        font-size: 12px;
    }
    .bottom-bar .bottom-btn strong {
        font-size: 14px;
    }
    .footer-container {
        grid-template-columns: 1fr;
        gap: 28px;
    }
    footer {
        padding: 40px 0 0;
    }

    /* 全部服务 - 移动端标签页横向滚动 */
    .service-tabs {
        flex-wrap: nowrap;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        padding-bottom: 4px;
        margin: 0 -20px;
        padding-left: 20px;
        padding-right: 20px;
    }
    .service-tabs::-webkit-scrollbar {
        display: none;
    }
    .tab-btn {
        flex-shrink: 0;
        padding: 8px 16px;
        font-size: 13px;
    }
    .tab-count {
        font-size: 11px;
        padding: 2px 7px;
    }
    .service-cloud {
        gap: 8px;
    }
    .service-tag {
        padding: 10px 14px;
        font-size: 13px;
    }
    .tag-hot {
        font-size: 9px;
        padding: 2px 5px;
    }
    .service-cta {
        flex-direction: column;
        text-align: center;
        padding: 28px 20px;
    }
    .service-cta .btn {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    nav {
        gap: 0;
    }
    nav a {
        padding: 6px 8px;
        font-size: 13px;
    }
    .hero {
        min-height: 440px;
    }
    .hero-badges {
        gap: 6px;
    }
    .hero-badge {
        font-size: 12px;
        padding: 5px 10px;
    }
    .btn-lg {
        padding: 12px 24px;
        font-size: 14px;
    }
    .about-features {
        grid-template-columns: 1fr;
    }
    .stat-card {
        padding: 16px;
    }
    .contact-info {
        padding: 20px;
    }
    .contact-item {
        padding: 10px 12px;
    }
    .contact-item-icon {
        width: 32px;
        height: 32px;
        margin-right: 12px;
    }
    .qr-card {
        padding: 22px 18px;
    }
    .qr-card img {
        width: 120px;
        height: 120px;
    }
    .wechat-modal .modal-qr {
        width: 200px;
        height: 200px;
    }
    .wechat-modal .modal-content {
        padding: 28px 20px 22px;
    }
    .bottom-bar .bottom-btn {
        padding: 9px 8px;
        gap: 6px;
    }
    .bottom-bar .bottom-btn-text {
        font-size: 11px;
    }
    .bottom-bar .bottom-btn strong {
        font-size: 13px;
    }
    .bottom-bar .bottom-btn svg {
        width: 18px;
        height: 18px;
    }
    .hero-stat {
        min-width: 70px;
    }
}

/* ==================== 动效减弱 ==================== */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    .reveal {
        opacity: 1;
        transform: none;
    }
}