/* ==========================================
   魔绘申诉官网 - 高端大气风格
   ========================================== */

/* CSS变量 */
:root {
    --color-primary: #0f172a;
    --color-primary-light: #1e293b;
    --color-gradient-start: #1e40af;
    --color-gradient-end: #7c3aed;
    --color-accent: #f59e0b;
    --color-success: #10b981;
    --color-white: #ffffff;
    --color-gray-50: #f8fafc;
    --color-gray-100: #f1f5f9;
    --color-gray-200: #e2e8f0;
    --color-gray-300: #cbd5e1;
    --color-gray-400: #94a3b8;
    --color-gray-500: #64748b;
    --color-gray-600: #475569;
    --color-gray-700: #334155;
    --color-gray-800: #1e293b;
    --color-gray-900: #0f172a;
    --color-text: #1f2937;
    --color-text-light: #6b7280;

    --font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 20px 25px -5px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
    --shadow-glow: 0 0 40px rgba(124, 58, 237, 0.3);

    --transition: all 0.3s ease;
    --transition-slow: all 0.5s ease;
}

/* Reset & Base */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-white);
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul {
    list-style: none;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ==========================================
   导航栏
   ========================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding: 16px 0;
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 900;
    color: white;
}

.logo-text {
    font-size: 20px;
    font-weight: 700;
    color: white;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    color: rgba(255, 255, 255, 0.8);
    font-size: 15px;
    font-weight: 500;
}

.nav-links a:hover {
    color: white;
}

.nav-cta {
    padding: 10px 24px !important;
    background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end));
    border-radius: 8px;
    color: white !important;
}

.nav-cta:hover {
    box-shadow: var(--shadow-glow);
    transform: translateY(-2px);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background: white;
    border-radius: 2px;
    transition: var(--transition);
}

/* ==========================================
   Hero区
   ========================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding: 120px 0 80px;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 50%, var(--color-gray-800) 100%);
}

.hero-bg::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(124, 58, 237, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 50%, rgba(30, 64, 175, 0.15) 0%, transparent 50%);
}

.particles {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.hero-content {
    position: relative;
    z-index: 10;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.hero-title {
    margin-bottom: 24px;
}

.title-main {
    display: block;
    font-size: clamp(48px, 8vw, 80px);
    font-weight: 900;
    color: white;
    letter-spacing: -2px;
    line-height: 1.1;
    background: linear-gradient(135deg, #fff 0%, #e2e8f0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.title-sub {
    display: block;
    font-size: clamp(20px, 3vw, 28px);
    font-weight: 500;
    color: rgba(255, 255, 255, 0.7);
    margin-top: 12px;
}

.hero-slogan {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.hero-slogan .highlight {
    font-size: clamp(18px, 2.5vw, 24px);
    font-weight: 700;
    color: var(--color-accent);
    text-shadow: 0 0 30px rgba(245, 158, 11, 0.5);
}

.hero-slogan .divider {
    color: rgba(255, 255, 255, 0.3);
    font-size: 24px;
}

.hero-desc {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 40px;
    letter-spacing: 4px;
}

.hero-cta {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 16px 32px;
    font-size: 16px;
    font-weight: 600;
    border-radius: 12px;
    cursor: pointer;
    border: none;
    transition: var(--transition);
}

.btn svg {
    width: 20px;
    height: 20px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end));
    color: white;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow);
}

.btn-glow {
    animation: glow-pulse 2s ease-in-out infinite;
}

@keyframes glow-pulse {
    0%, 100% {
        box-shadow: 0 0 20px rgba(124, 58, 237, 0.4);
    }
    50% {
        box-shadow: 0 0 40px rgba(124, 58, 237, 0.6);
    }
}

.btn-outline {
    background: transparent;
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
}

.hero-scroll {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: rgba(255, 255, 255, 0.5);
    font-size: 12px;
    letter-spacing: 2px;
}

.scroll-icon {
    width: 24px;
    height: 40px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 12px;
    position: relative;
}

.scroll-icon::before {
    content: '';
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background: white;
    border-radius: 2px;
    animation: scroll-bounce 2s ease-in-out infinite;
}

@keyframes scroll-bounce {
    0%, 100% {
        transform: translateX(-50%) translateY(0);
        opacity: 1;
    }
    50% {
        transform: translateX(-50%) translateY(10px);
        opacity: 0.3;
    }
}

/* ==========================================
   数据展示区
   ========================================== */
.stats {
    padding: 80px 0;
    background: var(--color-gray-50);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.stat-card {
    text-align: center;
    padding: 40px 24px;
    background: white;
    border-radius: 20px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.stat-number {
    font-size: 48px;
    font-weight: 900;
    background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline;
}

.stat-suffix {
    font-size: 32px;
    font-weight: 700;
    color: var(--color-gradient-end);
}

.stat-label {
    font-size: 16px;
    color: var(--color-gray-500);
    margin-top: 8px;
}

/* ==========================================
   通用Section样式
   ========================================== */
section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-tag {
    display: inline-block;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 3px;
    color: var(--color-gradient-end);
    margin-bottom: 16px;
}

.section-title {
    font-size: clamp(32px, 4vw, 42px);
    font-weight: 800;
    color: var(--color-gray-900);
    margin-bottom: 16px;
}

.section-desc {
    font-size: 18px;
    color: var(--color-gray-500);
}

/* ==========================================
   服务项目区
   ========================================== */
.services {
    background: white;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.service-card {
    padding: 40px 32px;
    background: var(--color-gray-50);
    border-radius: 20px;
    transition: var(--transition);
    border: 1px solid transparent;
}

.service-card:hover {
    background: white;
    border-color: var(--color-gray-200);
    box-shadow: var(--shadow-lg);
    transform: translateY(-5px);
}

.service-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end));
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
}

.service-icon svg {
    width: 32px;
    height: 32px;
    color: white;
}

.service-card h3 {
    font-size: 22px;
    font-weight: 700;
    color: var(--color-gray-900);
    margin-bottom: 12px;
}

.service-card p {
    font-size: 15px;
    color: var(--color-gray-500);
    line-height: 1.7;
    margin-bottom: 20px;
}

.service-link {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-gradient-end);
}

.service-link:hover {
    color: var(--color-gradient-start);
}

/* ==========================================
   核心优势区
   ========================================== */
.advantages {
    background: var(--color-gray-900);
    position: relative;
    overflow: hidden;
}

.advantages::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 0% 50%, rgba(124, 58, 237, 0.1) 0%, transparent 50%),
        radial-gradient(ellipse at 100% 50%, rgba(30, 64, 175, 0.1) 0%, transparent 50%);
}

.advantages .section-tag {
    color: var(--color-accent);
}

.advantages .section-title {
    color: white;
}

.advantages .section-desc {
    color: var(--color-gray-400);
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    position: relative;
    z-index: 10;
}

.advantage-card {
    padding: 40px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 20px;
    backdrop-filter: blur(10px);
    transition: var(--transition);
}

.advantage-card:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(255, 255, 255, 0.15);
    transform: translateY(-5px);
}

.advantage-number {
    font-size: 48px;
    font-weight: 900;
    background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    opacity: 0.5;
    margin-bottom: 20px;
}

.advantage-content h3 {
    font-size: 22px;
    font-weight: 700;
    color: white;
    margin-bottom: 12px;
}

.advantage-content p {
    font-size: 15px;
    color: var(--color-gray-400);
    line-height: 1.7;
}

/* ==========================================
   服务流程区
   ========================================== */
.process {
    background: white;
}

.process-timeline {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: 0;
    flex-wrap: wrap;
}

.process-step {
    flex: 1;
    min-width: 180px;
    max-width: 220px;
    text-align: center;
    padding: 0 16px;
}

.step-number {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 800;
    color: white;
    margin: 0 auto 20px;
    box-shadow: 0 10px 30px rgba(124, 58, 237, 0.3);
}

.step-content h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--color-gray-900);
    margin-bottom: 8px;
}

.step-content p {
    font-size: 14px;
    color: var(--color-gray-500);
    line-height: 1.6;
}

.process-line {
    width: 60px;
    height: 2px;
    background: linear-gradient(90deg, var(--color-gradient-start), var(--color-gradient-end));
    margin-top: 32px;
    flex-shrink: 0;
}

/* ==========================================
   团队介绍区
   ========================================== */
.team {
    background: var(--color-gray-50);
}

.team-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.team-info .section-tag {
    text-align: left;
}

.team-info .section-title {
    text-align: left;
    margin-bottom: 32px;
}

.team-list {
    margin-bottom: 32px;
}

.team-list li {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 0;
    border-bottom: 1px solid var(--color-gray-200);
    font-size: 16px;
    color: var(--color-gray-700);
}

.team-icon {
    font-size: 24px;
}

.team-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.team-card {
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end));
    border-radius: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    box-shadow: var(--shadow-glow);
}

.card-glow {
    position: absolute;
    inset: -20px;
    background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end));
    border-radius: 40px;
    opacity: 0.3;
    filter: blur(40px);
}

.card-content {
    position: relative;
    text-align: center;
    color: white;
}

.card-stat {
    font-size: 72px;
    font-weight: 900;
    line-height: 1;
}

.card-label {
    font-size: 20px;
    font-weight: 500;
    opacity: 0.9;
    margin-top: 8px;
}

/* ==========================================
   客户评价区
   ========================================== */
.testimonials {
    background: white;
    overflow: hidden;
}

.testimonials-slider {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.testimonial-card {
    padding: 32px;
    background: var(--color-gray-50);
    border-radius: 20px;
    transition: var(--transition);
}

.testimonial-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-5px);
}

.testimonial-content {
    margin-bottom: 24px;
}

.testimonial-content p {
    font-size: 15px;
    color: var(--color-gray-700);
    line-height: 1.8;
    font-style: italic;
}

.testimonial-content p::before {
    content: '"';
    font-size: 40px;
    color: var(--color-gradient-end);
    opacity: 0.3;
    line-height: 0;
    vertical-align: -15px;
    margin-right: 4px;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 16px;
}

.author-avatar {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: 700;
    color: white;
}

.author-name {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-gray-900);
}

.author-title {
    font-size: 13px;
    color: var(--color-gray-500);
}

/* ==========================================
   价格透明区
   ========================================== */
.pricing {
    background: var(--color-gray-50);
}

.pricing-table {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.pricing-card {
    padding: 40px 32px;
    background: white;
    border-radius: 24px;
    border: 1px solid var(--color-gray-200);
    transition: var(--transition);
    position: relative;
}

.pricing-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.pricing-card.featured {
    background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end));
    border: none;
    transform: scale(1.05);
}

.pricing-card.featured:hover {
    transform: scale(1.05) translateY(-10px);
}

.pricing-card.featured * {
    color: white !important;
}

.pricing-card.featured .btn-primary {
    background: white;
    color: var(--color-gradient-end) !important;
}

.pricing-badge {
    position: absolute;
    top: -12px;
    right: 24px;
    padding: 6px 16px;
    background: var(--color-accent);
    color: white;
    font-size: 12px;
    font-weight: 700;
    border-radius: 20px;
}

.pricing-header h3 {
    font-size: 22px;
    font-weight: 700;
    color: var(--color-gray-900);
    margin-bottom: 8px;
}

.pricing-header p {
    font-size: 14px;
    color: var(--color-gray-500);
    margin-bottom: 24px;
}

.pricing-price {
    margin-bottom: 24px;
    display: flex;
    align-items: baseline;
    gap: 4px;
}

.pricing-price .currency {
    font-size: 24px;
    font-weight: 600;
    color: var(--color-gray-900);
}

.pricing-price .amount {
    font-size: 42px;
    font-weight: 900;
    color: var(--color-gray-900);
}

.pricing-price .range {
    font-size: 18px;
    font-weight: 600;
    color: var(--color-gray-500);
}

.pricing-features {
    margin-bottom: 32px;
}

.pricing-features li {
    padding: 12px 0;
    font-size: 15px;
    color: var(--color-gray-600);
    border-bottom: 1px solid var(--color-gray-100);
    display: flex;
    align-items: center;
    gap: 8px;
}

.pricing-features li::before {
    content: '✓';
    color: var(--color-success);
    font-weight: 700;
}

.pricing-card.featured .pricing-features li {
    border-color: rgba(255, 255, 255, 0.2);
}

.pricing-card.featured .pricing-features li::before {
    color: var(--color-accent);
}

.pricing-card .btn {
    width: 100%;
}

/* ==========================================
   FAQ区
   ========================================== */
.faq {
    background: white;
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    border-bottom: 1px solid var(--color-gray-200);
}

.faq-question {
    width: 100%;
    padding: 24px 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: none;
    border: none;
    cursor: pointer;
    text-align: left;
    font-size: 17px;
    font-weight: 600;
    color: var(--color-gray-900);
    transition: var(--transition);
}

.faq-question:hover {
    color: var(--color-gradient-end);
}

.faq-icon {
    font-size: 24px;
    color: var(--color-gradient-end);
    transition: var(--transition);
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 200px;
}

.faq-answer p {
    padding-bottom: 24px;
    font-size: 15px;
    color: var(--color-gray-600);
    line-height: 1.8;
}

/* ==========================================
   联系CTA区
   ========================================== */
.contact {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    position: relative;
    overflow: hidden;
}

.contact::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 30% 50%, rgba(124, 58, 237, 0.2) 0%, transparent 50%);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 10;
}

.contact-info h2 {
    font-size: 36px;
    font-weight: 800;
    color: white;
    margin-bottom: 16px;
}

.contact-info > p {
    font-size: 18px;
    color: var(--color-gray-400);
    margin-bottom: 40px;
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.contact-method {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.method-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.method-icon svg {
    width: 24px;
    height: 24px;
    color: white;
}

.method-label {
    display: block;
    font-size: 13px;
    color: var(--color-gray-400);
}

.method-value {
    display: block;
    font-size: 18px;
    font-weight: 600;
    color: white;
}

.contact-qr {
    display: flex;
    justify-content: center;
}

.qr-card {
    padding: 32px;
    background: white;
    border-radius: 24px;
    text-align: center;
    box-shadow: var(--shadow-xl);
}

.qr-card img {
    width: 200px;
    height: 200px;
    border-radius: 16px;
    margin-bottom: 16px;
}

.qr-card p {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-gray-900);
    margin-bottom: 4px;
}

.qr-card span {
    font-size: 14px;
    color: var(--color-gray-500);
}

/* ==========================================
   页脚
   ========================================== */
.footer {
    background: var(--color-gray-900);
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 60px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand .logo {
    margin-bottom: 20px;
}

.footer-brand p {
    font-size: 14px;
    color: var(--color-gray-500);
    margin-bottom: 8px;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.footer-column h4 {
    font-size: 16px;
    font-weight: 600;
    color: white;
    margin-bottom: 20px;
}

.footer-column ul li {
    margin-bottom: 12px;
}

.footer-column ul li a,
.footer-column ul li {
    font-size: 14px;
    color: var(--color-gray-500);
    transition: var(--transition);
}

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

.footer-bottom {
    padding-top: 30px;
    text-align: center;
}

.footer-bottom p {
    font-size: 14px;
    color: var(--color-gray-600);
}

/* ==========================================
   返回顶部 & 浮动按钮
   ========================================== */
.back-to-top {
    position: fixed;
    bottom: 100px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: white;
    border: none;
    border-radius: 50%;
    box-shadow: var(--shadow-lg);
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.back-to-top svg {
    width: 24px;
    height: 24px;
    color: var(--color-gradient-end);
}

.floating-contact {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 999;
}

.floating-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 16px 24px;
    background: linear-gradient(135deg, var(--color-gradient-start), var(--color-gradient-end));
    color: white;
    border-radius: 50px;
    box-shadow: var(--shadow-glow);
    font-weight: 600;
    animation: float-bounce 3s ease-in-out infinite;
}

.floating-btn svg {
    width: 24px;
    height: 24px;
}

@keyframes float-bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

.floating-btn:hover {
    transform: scale(1.05);
}

/* ==========================================
   响应式设计
   ========================================== */
@media (max-width: 1024px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .advantages-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .pricing-table {
        grid-template-columns: repeat(2, 1fr);
    }

    .pricing-card.featured {
        transform: scale(1);
    }

    .testimonials-slider {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--color-primary);
        flex-direction: column;
        padding: 20px;
        gap: 16px;
    }

    .nav-links.active {
        display: flex;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .services-grid,
    .advantages-grid,
    .testimonials-slider {
        grid-template-columns: 1fr;
    }

    .pricing-table {
        grid-template-columns: 1fr;
    }

    .team-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .team-visual {
        order: -1;
    }

    .team-card {
        width: 200px;
        height: 200px;
    }

    .card-stat {
        font-size: 48px;
    }

    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }

    .process-timeline {
        flex-direction: column;
        align-items: center;
    }

    .process-line {
        width: 2px;
        height: 40px;
        margin: 0;
    }

    .process-step {
        max-width: 100%;
    }

    .hero-cta {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 300px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    section {
        padding: 60px 0;
    }

    .section-title {
        font-size: 28px;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .stat-card {
        padding: 24px 16px;
    }

    .stat-number {
        font-size: 36px;
    }

    .footer-links {
        grid-template-columns: 1fr;
    }

    .floating-btn span {
        display: none;
    }

    .floating-btn {
        padding: 16px;
        border-radius: 50%;
    }
}