/* ==================== 全局变量 ==================== */
:root {
    --color-primary: #C4A35A;
    --color-primary-dark: #A8893E;
    --color-primary-light: #D4B876;
    --color-dark: #2C1810;
    --color-dark-light: #4A3528;
    --color-cream: #FAF8F3;
    --color-cream-dark: #F0EBE0;
    --color-wine: #8B2635;
    --color-wine-light: #A23545;
    --color-text: #333333;
    --color-text-light: #666666;
    --color-text-muted: #999999;
    --color-white: #FFFFFF;
    --color-border: #E5E0D5;
    --shadow-sm: 0 2px 8px rgba(44, 24, 16, 0.06);
    --shadow-md: 0 4px 20px rgba(44, 24, 16, 0.1);
    --shadow-lg: 0 8px 40px rgba(44, 24, 16, 0.15);
    --transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    --radius: 8px;
    --radius-lg: 16px;
    --max-width: 1200px;
}

/* ==================== 基础重置 ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--color-text);
    line-height: 1.8;
    background: var(--color-white);
    overflow-x: hidden;
}

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

ul {
    list-style: none;
}

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

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* ==================== 通用 ==================== */
.section {
    padding: 100px 0;
    position: relative;
}

.section-alt {
    background: var(--color-cream);
}

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

.section-tag {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 500;
    letter-spacing: 3px;
    color: var(--color-primary);
    text-transform: uppercase;
    margin-bottom: 12px;
}

.section-title {
    font-family: 'Noto Serif SC', serif;
    font-size: 2.4rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: 16px;
}

.section-desc {
    font-size: 1.05rem;
    color: var(--color-text-light);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 36px;
    font-size: 1rem;
    font-weight: 500;
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition);
    border: none;
    font-family: inherit;
    letter-spacing: 1px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: var(--color-white);
    box-shadow: 0 4px 15px rgba(196, 163, 90, 0.35);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(196, 163, 90, 0.45);
    background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
}

.btn-outline {
    background: transparent;
    color: var(--color-white);
    border: 2px solid rgba(255, 255, 255, 0.6);
}

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

.btn-block {
    width: 100%;
}

/* ==================== 导航栏 ==================== */
#navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 16px 0;
    transition: var(--transition);
    background: transparent;
}

#navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-sm);
    padding: 10px 0;
}

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

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--color-white);
    transition: var(--transition);
}

#navbar.scrolled .nav-logo {
    color: var(--color-dark);
}

.logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.logo-title {
    font-family: 'Noto Serif SC', serif;
    font-size: 1.05rem;
    font-weight: 700;
    white-space: nowrap;
}

.logo-sub {
    font-size: 0.58rem;
    letter-spacing: 0.5px;
    color: var(--color-primary);
    white-space: nowrap;
}

.nav-menu {
    display: flex;
    gap: 4px;
}

.nav-link {
    padding: 8px 16px;
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.85);
    transition: var(--transition);
    position: relative;
    border-radius: var(--radius);
}

#navbar.scrolled .nav-link {
    color: var(--color-text);
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-primary);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 2px;
    background: var(--color-primary);
    border-radius: 1px;
}

#navbar.scrolled .nav-link:hover {
    color: var(--color-primary-dark);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-white);
    transition: var(--transition);
    border-radius: 1px;
}

#navbar.scrolled .nav-toggle span {
    background: var(--color-dark);
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ==================== 首页轮播 ==================== */
#hero {
    height: 100vh;
    min-height: 600px;
    position: relative;
    overflow: hidden;
}

.hero-slider {
    width: 100%;
    height: 100%;
    position: relative;
}

.hero-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    opacity: 0;
    transition: opacity 1s ease-in-out;
    background-size: cover;
    background-position: center;
}

.hero-slide.active {
    opacity: 1;
}

.hero-content {
    max-width: 700px;
    padding: 0 24px;
    color: var(--color-white);
}

.hero-title {
    font-family: 'Noto Serif SC', serif;
    font-size: 3.5rem;
    font-weight: 900;
    margin-bottom: 16px;
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
    letter-spacing: 4px;
}

.hero-slogan {
    font-size: 1.6rem;
    font-weight: 300;
    margin-bottom: 12px;
    letter-spacing: 2px;
    color: var(--color-primary-light);
}

.hero-desc {
    font-size: 1.1rem;
    margin-bottom: 36px;
    opacity: 0.9;
    letter-spacing: 1px;
}

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

/* 轮播指示点 */
.hero-dots {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 10;
}

.hero-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.4);
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
}

.hero-dot.active {
    background: var(--color-primary);
    border-color: var(--color-white);
    transform: scale(1.2);
}

/* 轮播箭头 */
.hero-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.15);
    color: var(--color-white);
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition);
    z-index: 10;
    font-size: 1.2rem;
    backdrop-filter: blur(4px);
}

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

.hero-arrow-left {
    left: 30px;
}

.hero-arrow-right {
    right: 30px;
}

/* 动画 */
.animate-up {
    animation: fadeInUp 0.8s ease forwards;
}

.animate-up.delay-1 { animation-delay: 0.15s; opacity: 0; }
.animate-up.delay-2 { animation-delay: 0.3s; opacity: 0; }
.animate-up.delay-3 { animation-delay: 0.45s; opacity: 0; }

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ==================== 数据统计 ==================== */
.stats-section {
    background: var(--color-dark);
    padding: 60px 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    text-align: center;
}

.stat-item {
    padding: 20px;
    border-right: 1px solid rgba(255, 255, 255, 0.1);
}

.stat-item:last-child {
    border-right: none;
}

.stat-number {
    font-family: 'Noto Serif SC', serif;
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 8px;
    line-height: 1.3;
}

.stat-number.stat-text {
    font-size: 2.2rem;
    font-weight: 700;
    line-height: 1.3;
    white-space: nowrap;
}

.stat-label {
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.7);
    letter-spacing: 1px;
}

/* ==================== 回收服务 ==================== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 30px;
}

.service-card {
    background: var(--color-white);
    padding: 40px 30px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid var(--color-border);
}

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

.service-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-cream), var(--color-cream-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    color: var(--color-primary);
    transition: var(--transition);
}

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

.service-card h3 {
    font-family: 'Noto Serif SC', serif;
    font-size: 1.3rem;
    color: var(--color-dark);
    margin-bottom: 12px;
}

.service-card > p {
    color: var(--color-text-light);
    font-size: 0.95rem;
    margin-bottom: 20px;
}

.service-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.service-list li {
    padding: 4px 14px;
    background: var(--color-cream);
    border-radius: 20px;
    font-size: 0.85rem;
    color: var(--color-text-light);
    transition: var(--transition);
}

.service-card:hover .service-list li {
    background: rgba(196, 163, 90, 0.1);
    color: var(--color-primary-dark);
}

/* ==================== 回收流程 ==================== */
.process-timeline {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    position: relative;
}

.process-timeline::before {
    content: '';
    position: absolute;
    top: 40px;
    left: 12.5%;
    right: 12.5%;
    height: 2px;
    background: linear-gradient(to right, var(--color-primary-light), var(--color-primary), var(--color-primary-light));
    z-index: 0;
}

.process-step {
    text-align: center;
    position: relative;
    z-index: 1;
}

.step-number {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
    border-radius: 50%;
    background: var(--color-white);
    border: 3px solid var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Noto Serif SC', serif;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    position: relative;
}

.process-step:hover .step-number {
    background: var(--color-primary);
    color: var(--color-white);
    transform: scale(1.1);
}

.step-icon {
    margin-bottom: 16px;
    color: var(--color-primary);
    display: flex;
    justify-content: center;
}

.step-content h3 {
    font-family: 'Noto Serif SC', serif;
    font-size: 1.2rem;
    color: var(--color-dark);
    margin-bottom: 10px;
}

.step-content p {
    font-size: 0.92rem;
    color: var(--color-text-light);
    padding: 0 8px;
}

/* ==================== 品牌优势 ==================== */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.advantage-card {
    background: var(--color-white);
    padding: 40px 30px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    border-top: 4px solid transparent;
}

.advantage-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-top-color: var(--color-primary);
}

.adv-icon {
    width: 72px;
    height: 72px;
    border-radius: 16px;
    background: linear-gradient(135deg, var(--color-cream), var(--color-cream-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    color: var(--color-primary);
    transition: var(--transition);
}

.advantage-card:hover .adv-icon {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: var(--color-white);
}

.advantage-card h3 {
    font-family: 'Noto Serif SC', serif;
    font-size: 1.3rem;
    color: var(--color-dark);
    margin-bottom: 12px;
}

.advantage-card p {
    font-size: 0.95rem;
    color: var(--color-text-light);
    line-height: 1.9;
}

/* ==================== 价格参考 ==================== */
.pricing-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 40px;
    align-items: start;
}

.pricing-factors {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.factor-card {
    background: var(--color-white);
    padding: 30px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border-left: 4px solid var(--color-primary);
}

.factor-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateX(4px);
}

.factor-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

.factor-num {
    font-family: 'Noto Serif SC', serif;
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--color-primary-light);
    opacity: 0.6;
}

.factor-header h3 {
    font-size: 1.15rem;
    color: var(--color-dark);
}

.factor-card p {
    font-size: 0.92rem;
    color: var(--color-text-light);
    line-height: 1.85;
}

.pricing-tip {
    background: linear-gradient(135deg, var(--color-dark), var(--color-dark-light));
    border-radius: var(--radius-lg);
    padding: 40px 30px;
    color: var(--color-white);
    position: relative;
    overflow: hidden;
}

.pricing-tip::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(196, 163, 90, 0.15) 0%, transparent 60%);
}

.tip-inner {
    position: relative;
    z-index: 1;
}

.pricing-tip h3 {
    font-family: 'Noto Serif SC', serif;
    font-size: 1.3rem;
    margin-bottom: 16px;
    color: var(--color-primary-light);
}

.pricing-tip p {
    font-size: 0.95rem;
    line-height: 1.9;
    margin-bottom: 24px;
    opacity: 0.9;
}

.pricing-tip strong {
    color: var(--color-primary-light);
}

/* ==================== 防坑指南 ==================== */
.guide-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
}

.guide-card {
    background: var(--color-white);
    padding: 30px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.guide-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.guide-card-header {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 14px;
}

.guide-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.guide-icon.red {
    background: rgba(139, 38, 53, 0.1);
    color: var(--color-wine);
}

.guide-icon.green {
    background: rgba(76, 175, 80, 0.1);
    color: #4CAF50;
}

.guide-card-header h3 {
    font-size: 1.1rem;
    color: var(--color-dark);
}

.guide-card p {
    font-size: 0.92rem;
    color: var(--color-text-light);
    line-height: 1.85;
}

/* ==================== 关于我们 ==================== */
.about-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-img-bg {
    width: 100%;
    aspect-ratio: 4/5;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--color-dark), var(--color-dark-light));
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.about-img-pattern {
    position: absolute;
    inset: 0;
    background-image: 
        radial-gradient(circle at 20% 30%, rgba(196, 163, 90, 0.15) 0%, transparent 40%),
        radial-gradient(circle at 80% 70%, rgba(139, 38, 53, 0.1) 0%, transparent 40%);
}

.about-img-bg::after {
    content: '兰亭皮草';
    font-family: 'Noto Serif SC', serif;
    font-size: 4rem;
    font-weight: 900;
    color: rgba(196, 163, 90, 0.15);
    letter-spacing: 8px;
    position: absolute;
    z-index: 1;
}

.about-badge {
    position: absolute;
    bottom: 30px;
    right: 30px;
    background: rgba(255, 255, 255, 0.95);
    padding: 20px 28px;
    border-radius: var(--radius);
    text-align: center;
    box-shadow: var(--shadow-md);
    z-index: 2;
}

.badge-number {
    display: block;
    font-family: 'Noto Serif SC', serif;
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1.2;
}

.badge-text {
    font-size: 0.85rem;
    color: var(--color-text-light);
}

.about-content .section-tag {
    margin-bottom: 12px;
}

.about-content .section-title {
    text-align: left;
    margin-bottom: 20px;
}

.about-lead {
    font-size: 1.15rem;
    color: var(--color-dark);
    margin-bottom: 16px;
    font-weight: 500;
    line-height: 1.9;
}

.about-content p {
    color: var(--color-text-light);
    margin-bottom: 16px;
    line-height: 1.9;
}

.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin: 24px 0 32px;
}

.about-feature {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.95rem;
    color: var(--color-text);
}

.check-icon {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--color-primary);
    position: relative;
    flex-shrink: 0;
}

.check-icon::after {
    content: '';
    position: absolute;
    left: 7px;
    top: 4px;
    width: 5px;
    height: 9px;
    border: solid var(--color-white);
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

/* ==================== 联系我们 ==================== */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 50px;
}

.contact-info h3 {
    font-family: 'Noto Serif SC', serif;
    font-size: 1.5rem;
    color: var(--color-dark);
    margin-bottom: 30px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
}

.contact-icon {
    width: 52px;
    height: 52px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--color-cream), var(--color-cream-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    flex-shrink: 0;
}

.contact-label {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-bottom: 2px;
}

.contact-value {
    font-size: 1.05rem;
    color: var(--color-dark);
    font-weight: 500;
}

.contact-qr {
    margin-top: 30px;
    text-align: center;
}

.qr-placeholder {
    display: inline-flex;
    padding: 20px;
    border-radius: var(--radius);
    background: var(--color-cream);
    color: var(--color-text-muted);
    margin-bottom: 8px;
}

.contact-qr p {
    font-size: 0.9rem;
    color: var(--color-text-light);
}

/* 表单 */
.contact-form-wrapper {
    position: relative;
}

.contact-form {
    background: var(--color-white);
    padding: 40px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-border);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 0.9rem;
    color: var(--color-dark);
    margin-bottom: 8px;
    font-weight: 500;
}

.required {
    color: var(--color-wine);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius);
    font-size: 0.95rem;
    font-family: inherit;
    color: var(--color-text);
    transition: var(--transition);
    background: var(--color-cream);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    background: var(--color-white);
    box-shadow: 0 0 0 3px rgba(196, 163, 90, 0.1);
}

.form-group textarea {
    resize: vertical;
}

.form-tip {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-top: 12px;
    text-align: center;
}

.form-success {
    position: absolute;
    inset: 0;
    background: var(--color-white);
    border-radius: var(--radius-lg);
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 40px;
    box-shadow: var(--shadow-md);
}

.form-success.show {
    display: flex;
    animation: fadeInUp 0.5s ease;
}

.success-icon {
    color: #4CAF50;
    margin-bottom: 20px;
}

.form-success h3 {
    font-family: 'Noto Serif SC', serif;
    font-size: 1.5rem;
    color: var(--color-dark);
    margin-bottom: 10px;
}

.form-success p {
    color: var(--color-text-light);
}

/* ==================== 页脚 ==================== */
footer {
    background: var(--color-dark);
    color: rgba(255, 255, 255, 0.7);
}

.footer-top {
    padding: 60px 0 40px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 40px;
}

.footer-brand .footer-logo {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
    color: var(--color-white);
}

.footer-brand .logo-text {
    display: flex;
    flex-direction: column;
}

.footer-brand .logo-title {
    font-family: 'Noto Serif SC', serif;
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-white);
}

.footer-brand .logo-sub {
    font-size: 0.7rem;
    letter-spacing: 1px;
    color: rgba(255, 255, 255, 0.7);
    margin-top: 2px;
}

.footer-logo-img {
    height: 60px;
    width: auto;
    border-radius: 8px;
    object-fit: contain;
    transition: var(--transition);
}

.footer-desc {
    font-size: 0.9rem;
    line-height: 1.8;
    max-width: 320px;
}

.footer-contact-info {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    max-width: 320px;
}

.footer-contact-info p {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 8px;
    line-height: 1.6;
}

.footer-contact-info p strong {
    color: var(--color-white);
    font-weight: 500;
}

.footer-contact-info a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: var(--transition);
}

.footer-contact-info a:hover {
    color: var(--color-primary);
    text-decoration: underline;
}

@media (max-width: 768px) {
    .footer-contact-info {
        margin-top: 14px;
        padding-top: 14px;
    }
    
    .footer-contact-info p {
        font-size: 0.85rem;
    }
}

.footer-col h4 {
    font-family: 'Noto Serif SC', serif;
    font-size: 1.1rem;
    color: var(--color-white);
    margin-bottom: 20px;
}

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

.footer-col ul li a {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.6);
    transition: var(--transition);
}

.footer-col ul li a:hover {
    color: var(--color-primary);
}

.footer-contact li {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 10px;
}

.footer-bottom {
    padding: 20px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.footer-contact-bar {
    padding: 20px 0 12px;
    text-align: center;
}

.footer-contact-bar .container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 20px 30px;
}

.footer-contact-bar p {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
    margin: 0;
    line-height: 1.6;
}

.footer-contact-bar p strong {
    color: var(--color-white);
    font-weight: 500;
}

.footer-contact-bar a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: var(--transition);
}

.footer-contact-bar a:hover {
    color: var(--color-primary);
    text-decoration: underline;
}

@media (max-width: 768px) {
    .footer-contact-bar .container {
        flex-direction: column;
        gap: 8px;
    }
    
    .footer-contact-bar p {
        font-size: 0.85rem;
    }
}

.footer-bottom p {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.4);
}

/* ==================== 返回顶部 ==================== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--color-primary);
    color: var(--color-white);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    opacity: 0;
    visibility: hidden;
    z-index: 999;
}

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

.back-to-top:hover {
    background: var(--color-primary-dark);
    transform: translateY(-4px);
}

/* ==================== 滚动动画 ==================== */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

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

.reveal.delay-1 { transition-delay: 0.1s; }
.reveal.delay-2 { transition-delay: 0.2s; }
.reveal.delay-3 { transition-delay: 0.3s; }
.reveal.delay-4 { transition-delay: 0.4s; }
.reveal.delay-5 { transition-delay: 0.5s; }

/* ==================== 响应式 ==================== */
@media (max-width: 1024px) {
    .process-timeline {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px;
    }
    
    .process-timeline::before {
        display: none;
    }
    
    .pricing-content {
        grid-template-columns: 1fr;
    }
    
    .about-wrapper {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .about-img-bg {
        max-width: 400px;
        margin: 0 auto;
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .contact-wrapper {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .section {
        padding: 60px 0;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--color-white);
        flex-direction: column;
        padding: 80px 24px 24px;
        gap: 0;
        transition: right 0.4s ease;
        box-shadow: -4px 0 30px rgba(0, 0, 0, 0.1);
        overflow-y: auto;
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .nav-link {
        color: var(--color-text);
        padding: 14px 16px;
        border-bottom: 1px solid var(--color-border);
        border-radius: 0;
    }
    
    .nav-link.active::after {
        display: none;
    }
    
    .nav-toggle {
        display: flex;
        z-index: 1001;
    }
    
    .hero-title {
        font-size: 2.2rem;
    }
    
    .hero-slogan {
        font-size: 1.2rem;
    }
    
    .hero-desc {
        font-size: 0.95rem;
    }
    
    .hero-arrow {
        display: none;
    }
    
    .stats-grid {
        grid-template-columns: 1fr 1fr;
        gap: 20px;
    }
    
    .stat-item {
        border-right: none;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        padding-bottom: 20px;
    }
    
    .stat-item:nth-child(3),
    .stat-item:nth-child(4) {
        border-bottom: none;
    }
    
    .stat-number {
        font-size: 1.5rem;
    }
    
    .stat-number.stat-text {
        font-size: 1.5rem;
        white-space: nowrap;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .process-timeline {
        grid-template-columns: 1fr;
    }
    
    .pricing-factors {
        grid-template-columns: 1fr;
    }
    
    .about-features {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .contact-form {
        padding: 24px;
    }
    
    .back-to-top {
        bottom: 20px;
        right: 20px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.8rem;
        letter-spacing: 2px;
    }
    
    .hero-actions {
        flex-direction: column;
        width: 100%;
    }
    
    .hero-actions .btn {
        width: 100%;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .container {
        padding: 0 16px;
    }
}

/* ==================== 文章卡片 ==================== */
.articles-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-bottom: 40px;
}

.article-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: 28px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
    transition: var(--transition);
    cursor: pointer;
    display: flex;
    flex-direction: column;
    border-top: 4px solid transparent;
    text-decoration: none;
    color: inherit;
}

.article-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-top-color: var(--color-primary);
}

.article-card-tag {
    display: inline-block;
    padding: 3px 12px;
    background: rgba(196, 163, 90, 0.1);
    color: var(--color-primary-dark);
    border-radius: 20px;
    font-size: 0.78rem;
    margin-bottom: 12px;
    align-self: flex-start;
}

.article-card-title {
    font-family: 'Noto Serif SC', serif;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-dark);
    margin-bottom: 10px;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-card-summary {
    font-size: 0.9rem;
    color: var(--color-text-light);
    line-height: 1.8;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 14px;
    flex: 1;
}

.article-card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-top: 1px solid var(--color-border);
    padding-top: 12px;
}

.article-card-date {
    font-size: 0.82rem;
    color: var(--color-text-muted);
}

.article-card-read {
    font-size: 0.85rem;
    color: var(--color-primary);
    font-weight: 500;
    transition: var(--transition);
}

.article-card:hover .article-card-read {
    color: var(--color-primary-dark);
    transform: translateX(4px);
}

.articles-more {
    text-align: center;
    margin-top: 20px;
}

/* ==================== 专栏文章列表 ==================== */
.article-list {
    display: flex;
    flex-direction: column;
    gap: 0;
    margin-top: 20px;
}

.article-list-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 16px 20px;
    border-bottom: 1px solid #eee;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
    color: inherit;
}

.article-list-item:hover {
    background: #faf8f5;
    padding-left: 28px;
}

.article-list-num {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--color-primary);
    color: #fff;
    font-size: 0.8rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 2px;
}

.article-list-body {
    flex: 1;
    min-width: 0;
}

.article-list-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 4px;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-list-item:hover .article-list-title {
    color: var(--color-primary);
}

.article-list-summary {
    font-size: 0.85rem;
    color: #888;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 6px;
}

.article-list-date {
    font-size: 0.78rem;
    color: var(--color-text-muted);
}

/* ==================== 文章详情页 ==================== */
.article-detail-page {
    padding-top: 100px;
    min-height: 100vh;
    background: var(--color-cream);
}

.article-detail-container {
    max-width: 820px;
    margin: 0 auto;
    padding: 40px 24px 60px;
    background: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    margin-bottom: 40px;
}

.article-detail-breadcrumb {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-bottom: 24px;
}

.article-detail-breadcrumb a {
    color: var(--color-text-light);
    text-decoration: none;
    transition: var(--transition);
}

.article-detail-breadcrumb a:hover {
    color: var(--color-primary);
}

.breadcrumb-sep {
    margin: 0 6px;
    color: #ccc;
}

.breadcrumb-current {
    color: var(--color-text);
}

.article-detail-title {
    font-family: 'Noto Serif SC', serif;
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--color-dark);
    line-height: 1.6;
    margin-bottom: 16px;
}

.article-detail-meta {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--color-border);
}

.article-detail-author {
    font-weight: 500;
    color: var(--color-text-light);
}

.article-detail-sep {
    color: #ddd;
}

.article-detail-summary {
    font-size: 0.95rem;
    color: var(--color-text-light);
    line-height: 1.8;
    padding: 16px 20px;
    background: var(--color-cream);
    border-radius: var(--radius-sm);
    border-left: 4px solid var(--color-primary);
    margin-bottom: 30px;
}

.article-detail-body {
    font-size: 1rem;
    line-height: 2;
    color: var(--color-text);
}

.article-detail-body p {
    margin-bottom: 18px;
    text-indent: 2em;
}

.article-detail-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 40px;
    padding-top: 24px;
    border-top: 1px solid var(--color-border);
    gap: 12px;
    flex-wrap: wrap;
}

.article-detail-nav a,
.article-detail-nav span {
    font-size: 0.9rem;
    padding: 8px 18px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.page-nav-prev,
.page-nav-next {
    background: var(--color-cream);
    color: var(--color-text);
    text-decoration: none;
}

.page-nav-prev:hover,
.page-nav-next:hover {
    background: var(--color-primary);
    color: #fff;
}

.page-nav-prev.disabled,
.page-nav-next.disabled {
    color: #ccc;
    background: #f5f5f5;
    cursor: not-allowed;
}

.page-nav-back {
    background: var(--color-primary);
    color: #fff;
    text-decoration: none;
}

.page-nav-back:hover {
    background: var(--color-primary-dark);
    color: #fff;
}

@media (max-width: 768px) {
    .article-detail-container {
        padding: 24px 16px 40px;
    }

    .article-detail-title {
        font-size: 1.4rem;
    }

    .article-detail-body {
        font-size: 0.95rem;
        line-height: 1.9;
    }

    .article-detail-nav {
        flex-direction: column;
        gap: 8px;
    }

    .article-detail-nav a,
    .article-detail-nav span {
        width: 100%;
        text-align: center;
    }
}

/* ==================== 专栏页面 ==================== */
.column-page {
    padding-top: 100px;
    min-height: 100vh;
    background: var(--color-cream);
}

.column-header {
    text-align: center;
    padding: 60px 0 40px;
}

.column-header h1 {
    font-family: 'Noto Serif SC', serif;
    font-size: 2.4rem;
    color: var(--color-dark);
    margin-bottom: 12px;
}

.column-header p {
    color: var(--color-text-light);
    font-size: 1.05rem;
}

.column-search {
    max-width: 500px;
    margin: 0 auto 40px;
    position: relative;
}

.column-search input {
    width: 100%;
    padding: 12px 20px 12px 48px;
    border: 2px solid var(--color-border);
    border-radius: 30px;
    font-size: 0.95rem;
    font-family: inherit;
    background: var(--color-white);
    transition: var(--transition);
}

.column-search input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(196, 163, 90, 0.1);
}

.column-search-icon {
    position: absolute;
    left: 18px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-text-muted);
}

.column-content {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px 80px;
}

.column-pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    margin-top: 40px;
}

.page-btn {
    min-width: 40px;
    height: 40px;
    border-radius: var(--radius);
    border: 1.5px solid var(--color-border);
    background: var(--color-white);
    color: var(--color-text);
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 12px;
}

.page-btn:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.page-btn.active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-white);
}

.page-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* 响应式：文章卡片 */
@media (max-width: 768px) {
    .articles-grid {
        grid-template-columns: 1fr;
    }
    
    .article-modal-content {
        padding: 24px;
    }
    
    .article-modal-title {
        font-size: 1.2rem;
    }
    
    .column-header h1 {
        font-size: 1.8rem;
    }
}