/* ============================================================
   香港大地药业集团 - 大地棕褐风格样式表
   Hong Kong Dadi Pharmaceutical Group
   主色：棕色 / 米色 / 赤陶
   字体：Lora + Noto Sans SC
   ============================================================ */

/* ==================== CSS 变量定义 ==================== */
:root {
    /* 棕色系 */
    --brown-dark: #8B4513;
    --brown: #A0522D;
    --brown-light: #CD853F;

    /* 米色系 */
    --beige: #F5F5DC;
    --beige-dark: #DEB887;
    --cream: #FAF6E9;

    /* 赤陶色系 */
    --terracotta: #E27B58;
    --terracotta-dark: #CD853F;

    /* 中性色 */
    --text-dark: #3E2A1C;
    --text-body: #5C4632;
    --text-light: #8A7560;
    --white: #FFFFFF;
    --shadow: rgba(139, 69, 19, 0.15);
    --shadow-strong: rgba(139, 69, 19, 0.35);

    /* 字体 */
    --font-serif: 'Lora', 'Noto Serif SC', Georgia, serif;
    --font-sans: 'Noto Sans SC', 'Segoe UI', sans-serif;

    /* 间距 */
    --section-padding: 6rem 0;
    --container-width: 1200px;

    /* 过渡 */
    --transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);

    /* 有机形状 border-radius */
    --organic-1: 63% 37% 54% 46% / 55% 48% 52% 45%;
    --organic-2: 42% 58% 38% 62% / 60% 42% 58% 40%;
    --organic-3: 30% 70% 70% 30% / 50% 50% 50% 50%;
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.7;
    color: var(--text-body);
    background: var(--cream);
    /* 自然纹理感渐变背景 */
    background-image:
        radial-gradient(ellipse at 20% 10%, rgba(205, 133, 63, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(139, 69, 19, 0.06) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, rgba(245, 245, 220, 0.4) 0%, transparent 70%);
    overflow-x: hidden;
}

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

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

a:hover {
    color: var(--terracotta);
}

ul {
    list-style: none;
}

/* ==================== 通用容器 ==================== */
.container {
    width: 90%;
    max-width: var(--container-width);
    margin: 0 auto;
}

.section {
    padding: var(--section-padding);
    position: relative;
}

.section-alt {
    background:
        linear-gradient(135deg, rgba(222, 184, 135, 0.12) 0%, rgba(245, 245, 220, 0.3) 100%);
}

/* ==================== 区块标题 ==================== */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-eyebrow {
    display: inline-block;
    font-family: var(--font-serif);
    font-size: 0.85rem;
    letter-spacing: 4px;
    color: var(--brown-light);
    text-transform: uppercase;
    margin-bottom: 0.8rem;
    font-weight: 500;
}

.section-title {
    font-family: var(--font-serif);
    font-size: clamp(2rem, 5vw, 3.2rem);
    color: var(--brown-dark);
    font-weight: 700;
    margin-bottom: 1rem;
    letter-spacing: 2px;
}

.section-subtitle {
    color: var(--text-light);
    font-size: 1.05rem;
    max-width: 600px;
    margin: 0 auto;
}

.section-divider {
    display: flex;
    justify-content: center;
    margin: 0.5rem 0 1rem;
}

/* ==================== 按钮 ==================== */
.btn {
    display: inline-block;
    padding: 0.95rem 2.2rem;
    font-family: var(--font-sans);
    font-size: 1rem;
    font-weight: 500;
    letter-spacing: 1px;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    border-radius: 40px 8px 40px 8px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--brown-dark) 0%, var(--brown) 100%);
    color: var(--beige);
    box-shadow: 0 6px 20px var(--shadow-strong);
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--terracotta) 0%, var(--brown-light) 100%);
    transition: left 0.5s ease;
}

.btn-primary span,
.btn-primary {
    position: relative;
    z-index: 1;
}

.btn-primary:hover::before {
    left: 0;
}

.btn-primary:hover {
    color: var(--white);
    transform: translateY(-3px);
    box-shadow: 0 10px 28px var(--shadow-strong);
    border-radius: 8px 40px 8px 40px;
}

.btn-block {
    display: block;
    width: 100%;
}

/* ==================== 模块1：导航栏 ==================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(245, 245, 220, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 2px 20px var(--shadow);
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(250, 246, 233, 0.95);
    box-shadow: 0 4px 24px var(--shadow-strong);
}

.nav-container {
    width: 90%;
    max-width: var(--container-width);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.9rem 0;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: 0.7rem;
    color: var(--brown-dark);
}

.logo-icon {
    display: flex;
    transition: var(--transition);
}

.logo:hover .logo-icon {
    transform: rotate(-15deg) scale(1.05);
}

.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.1;
}

.logo-zh {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--brown-dark);
    letter-spacing: 2px;
}

.logo-en {
    font-family: var(--font-serif);
    font-size: 0.65rem;
    color: var(--brown-light);
    letter-spacing: 2px;
    text-transform: uppercase;
}

/* 桌面导航菜单 */
.nav-menu ul {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    font-size: 1rem;
    color: var(--text-dark);
    font-weight: 500;
    position: relative;
    padding: 0.3rem 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 50%;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--terracotta), var(--brown));
    transition: var(--transition);
    transform: translateX(-50%);
    border-radius: 2px;
}

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

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

.nav-cta {
    background: linear-gradient(135deg, var(--brown-dark), var(--brown));
    color: var(--beige) !important;
    padding: 0.6rem 1.5rem !important;
    border-radius: 30px 6px 30px 6px;
    box-shadow: 0 4px 14px var(--shadow);
}

.nav-cta::after {
    display: none;
}

.nav-cta:hover {
    background: linear-gradient(135deg, var(--terracotta), var(--brown-light));
    color: var(--white) !important;
    transform: translateY(-2px);
    border-radius: 6px 30px 6px 30px;
}

/* 汉堡菜单 */
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 22px;
    background: transparent;
    border: none;
    cursor: pointer;
    z-index: 1001;
}

.hamburger span {
    display: block;
    width: 100%;
    height: 3px;
    background: var(--brown-dark);
    border-radius: 3px;
    transition: var(--transition);
}

.hamburger.active span:nth-child(1) {
    transform: translateY(9.5px) rotate(45deg);
}

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

.hamburger.active span:nth-child(3) {
    transform: translateY(-9.5px) rotate(-45deg);
}

/* ==================== 模块2：全屏轮播图 ==================== */
.hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    overflow: hidden;
    background: var(--brown-dark);
}

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

.hero-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 1.2s ease, transform 1.2s ease;
    transform: scale(1.08);
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-slide.active {
    opacity: 1;
    visibility: visible;
    transform: scale(1);
    z-index: 1;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background:
        linear-gradient(135deg, rgba(62, 42, 28, 0.7) 0%, rgba(139, 69, 19, 0.5) 50%, rgba(226, 123, 88, 0.3) 100%);
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: var(--beige);
    max-width: 800px;
    padding: 0 1.5rem;
    transform: translateY(40px);
    opacity: 0;
    transition: all 1s ease 0.4s;
}

.hero-slide.active .hero-content {
    transform: translateY(0);
    opacity: 1;
}

.hero-tag {
    display: inline-block;
    padding: 0.4rem 1.4rem;
    background: rgba(245, 245, 220, 0.15);
    border: 1px solid rgba(245, 245, 220, 0.4);
    border-radius: 30px;
    font-size: 0.85rem;
    letter-spacing: 4px;
    margin-bottom: 1.5rem;
    backdrop-filter: blur(8px);
    font-family: var(--font-serif);
}

.hero-title {
    font-family: var(--font-serif);
    font-size: clamp(2.5rem, 7vw, 5rem);
    font-weight: 700;
    margin-bottom: 1.2rem;
    letter-spacing: 4px;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

.hero-desc {
    font-size: clamp(1rem, 2vw, 1.25rem);
    margin-bottom: 2.2rem;
    line-height: 1.8;
    color: rgba(245, 245, 220, 0.95);
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

/* 轮播箭头 */
.slider-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 5;
    width: 56px;
    height: 56px;
    border: 2px solid rgba(245, 245, 220, 0.5);
    background: rgba(62, 42, 28, 0.3);
    color: var(--beige);
    font-size: 2rem;
    cursor: pointer;
    border-radius: 50%;
    backdrop-filter: blur(8px);
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
}

.slider-arrow:hover {
    background: var(--brown-dark);
    border-color: var(--terracotta);
    transform: translateY(-50%) scale(1.1);
}

.slider-arrow.prev {
    left: 2rem;
}

.slider-arrow.next {
    right: 2rem;
}

/* 轮播指示点 */
.slider-dots {
    position: absolute;
    bottom: 2.5rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 0.8rem;
    z-index: 5;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: var(--organic-1);
    border: none;
    background: rgba(245, 245, 220, 0.4);
    cursor: pointer;
    transition: var(--transition);
}

.dot.active {
    background: var(--terracotta);
    width: 40px;
    border-radius: 6px;
}

/* ==================== 模块3：关于我们 ==================== */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    margin-bottom: 5rem;
}

.about-image {
    position: relative;
}

.about-image-frame {
    width: 100%;
    height: 480px;
    background-size: cover;
    background-position: center;
    border-radius: var(--organic-1);
    box-shadow: 0 20px 50px var(--shadow-strong);
    transition: var(--transition);
}

.about-image:hover .about-image-frame {
    border-radius: var(--organic-2);
    transform: scale(1.02);
}

.about-image-badge {
    position: absolute;
    bottom: -25px;
    right: -25px;
    background: linear-gradient(135deg, var(--brown-dark), var(--brown));
    color: var(--beige);
    padding: 1.5rem 2rem;
    border-radius: 50% 8px 50% 8px;
    box-shadow: 0 10px 30px var(--shadow-strong);
    text-align: center;
    transition: var(--transition);
}

.about-image:hover .about-image-badge {
    border-radius: 8px 50% 8px 50%;
    transform: rotate(-5deg);
}

.badge-year {
    display: block;
    font-family: var(--font-serif);
    font-size: 2.2rem;
    font-weight: 700;
    line-height: 1;
}

.badge-text {
    display: block;
    font-size: 0.85rem;
    margin-top: 0.3rem;
    letter-spacing: 2px;
}

.about-text {
    color: var(--text-body);
}

.about-lead {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    color: var(--brown-dark);
    margin-bottom: 1.5rem;
    line-height: 1.6;
    font-weight: 500;
}

.about-text p {
    margin-bottom: 1.2rem;
    line-height: 1.9;
}

/* 统计数据 */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    text-align: center;
    padding: 3rem 2rem;
    background: linear-gradient(135deg, rgba(139, 69, 19, 0.05) 0%, rgba(226, 123, 88, 0.05) 100%);
    border-radius: 60px 10px 60px 10px;
    box-shadow: inset 0 0 0 1px rgba(139, 69, 19, 0.1);
}

.stat-item {
    position: relative;
}

.stat-item:not(:last-child)::after {
    content: '';
    position: absolute;
    right: -1rem;
    top: 20%;
    height: 60%;
    width: 1px;
    background: linear-gradient(to bottom, transparent, var(--beige-dark), transparent);
}

.stat-number {
    font-family: var(--font-serif);
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 700;
    color: var(--brown-dark);
    line-height: 1;
    display: inline-block;
}

.stat-suffix {
    font-family: var(--font-serif);
    font-size: 1.3rem;
    color: var(--terracotta);
    margin-left: 0.2rem;
}

.stat-label {
    display: block;
    margin-top: 0.8rem;
    color: var(--text-light);
    font-size: 0.95rem;
    letter-spacing: 2px;
}

/* ==================== 模块4：服务介绍 ==================== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.8rem;
}

.service-card {
    position: relative;
    background: var(--white);
    padding: 3rem 1.8rem 2.5rem;
    border-radius: 40px 10px 40px 10px;
    box-shadow: 0 10px 30px var(--shadow);
    text-align: center;
    transition: var(--transition);
    overflow: hidden;
    cursor: pointer;
    border: 1px solid rgba(205, 133, 63, 0.1);
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: linear-gradient(90deg, var(--brown-dark), var(--terracotta));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.5s ease;
}

.service-card:hover {
    transform: translateY(-12px);
    box-shadow: 0 20px 40px var(--shadow-strong);
    border-radius: 10px 40px 10px 40px;
}

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

.service-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--beige) 0%, var(--beige-dark) 100%);
    border-radius: var(--organic-2);
    transition: var(--transition);
}

.service-card:hover .service-icon {
    border-radius: var(--organic-1);
    transform: rotate(10deg) scale(1.1);
    background: linear-gradient(135deg, var(--terracotta) 0%, var(--brown-light) 100%);
}

.service-title {
    font-family: var(--font-serif);
    font-size: 1.4rem;
    color: var(--brown-dark);
    margin-bottom: 0.8rem;
    font-weight: 600;
    letter-spacing: 1px;
}

.service-desc {
    color: var(--text-light);
    font-size: 0.95rem;
    line-height: 1.7;
}

.service-number {
    position: absolute;
    top: 1rem;
    right: 1.5rem;
    font-family: var(--font-serif);
    font-size: 3rem;
    color: rgba(139, 69, 19, 0.08);
    font-weight: 700;
    transition: var(--transition);
}

.service-card:hover .service-number {
    color: rgba(226, 123, 88, 0.2);
    transform: scale(1.2);
}

/* ==================== 模块5：客户案例 ==================== */
.cases-slider {
    display: flex;
    gap: 1.8rem;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    padding: 1rem 0 2rem;
    scrollbar-width: thin;
    scrollbar-color: var(--brown-light) transparent;
    -webkit-overflow-scrolling: touch;
    scroll-padding-left: 0;
}

.cases-slider::-webkit-scrollbar {
    height: 8px;
}

.cases-slider::-webkit-scrollbar-track {
    background: rgba(205, 133, 63, 0.1);
    border-radius: 4px;
}

.cases-slider::-webkit-scrollbar-thumb {
    background: var(--brown-light);
    border-radius: 4px;
}

.case-card {
    flex: 0 0 320px;
    scroll-snap-align: start;
    background: var(--white);
    border-radius: 30px 8px 30px 8px;
    overflow: hidden;
    box-shadow: 0 10px 30px var(--shadow);
    transition: var(--transition);
}

.case-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 18px 40px var(--shadow-strong);
    border-radius: 8px 30px 8px 30px;
}

.case-image {
    width: 100%;
    aspect-ratio: 1 / 1;
    background-size: cover;
    background-position: center;
    position: relative;
    transition: var(--transition);
}

.case-card:hover .case-image {
    transform: scale(1.03);
}

.case-tag {
    position: absolute;
    top: 1rem;
    left: 1rem;
    padding: 0.3rem 1rem;
    background: rgba(62, 42, 28, 0.7);
    color: var(--beige);
    border-radius: 20px 4px 20px 4px;
    font-size: 0.8rem;
    backdrop-filter: blur(6px);
    letter-spacing: 1px;
}

.case-info {
    padding: 1.5rem 1.6rem 1.8rem;
}

.case-name {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    color: var(--brown-dark);
    margin-bottom: 0.8rem;
    font-weight: 600;
}

.case-quote {
    color: var(--text-body);
    font-style: italic;
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: 1.2rem;
    position: relative;
    padding-left: 1.2rem;
}

.case-quote::before {
    content: '"';
    position: absolute;
    left: 0;
    top: -8px;
    font-family: var(--font-serif);
    font-size: 2rem;
    color: var(--terracotta);
    line-height: 1;
}

.case-meta {
    display: flex;
    justify-content: space-between;
    padding-top: 1rem;
    border-top: 1px dashed rgba(205, 133, 63, 0.3);
}

.case-product,
.case-duration {
    font-size: 0.82rem;
    color: var(--text-light);
}

.case-product {
    color: var(--brown);
    font-weight: 500;
}

.cases-hint {
    text-align: center;
    margin-top: 1rem;
    color: var(--text-light);
    font-size: 0.85rem;
    letter-spacing: 2px;
}

/* ==================== 模块6：新闻资讯 ==================== */
.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.news-card {
    background: var(--white);
    padding: 2rem 1.8rem;
    border-radius: 30px 8px 30px 8px;
    box-shadow: 0 10px 30px var(--shadow);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.news-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--brown-dark), var(--terracotta));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.5s ease;
}

.news-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 18px 40px var(--shadow-strong);
    border-radius: 8px 30px 8px 30px;
}

.news-card:hover::after {
    transform: scaleX(1);
}

.news-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.2rem;
}

.news-date {
    font-family: var(--font-serif);
    font-size: 0.9rem;
    color: var(--brown-light);
    font-weight: 500;
}

.news-category {
    padding: 0.25rem 0.9rem;
    background: linear-gradient(135deg, var(--beige), var(--beige-dark));
    color: var(--brown-dark);
    border-radius: 15px 3px 15px 3px;
    font-size: 0.78rem;
    font-weight: 500;
}

.news-title {
    font-family: var(--font-serif);
    font-size: 1.2rem;
    color: var(--brown-dark);
    margin-bottom: 1rem;
    line-height: 1.5;
    font-weight: 600;
    transition: var(--transition);
}

.news-card:hover .news-title {
    color: var(--terracotta);
}

.news-excerpt {
    color: var(--text-light);
    font-size: 0.92rem;
    line-height: 1.7;
    margin-bottom: 1.3rem;
}

.news-link {
    font-weight: 500;
    color: var(--brown);
    font-size: 0.9rem;
    letter-spacing: 1px;
}

.news-link:hover {
    color: var(--terracotta);
    letter-spacing: 2px;
}

/* ==================== 模块7：FAQ ==================== */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.faq-item {
    background: var(--white);
    border-radius: 25px 6px 25px 6px;
    box-shadow: 0 6px 20px var(--shadow);
    overflow: hidden;
    transition: var(--transition);
    border: 1px solid rgba(205, 133, 63, 0.12);
}

.faq-item:hover {
    box-shadow: 0 10px 28px var(--shadow-strong);
    border-color: var(--terracotta);
}

.faq-item.active {
    background: linear-gradient(135deg, var(--beige) 0%, var(--cream) 100%);
    border-radius: 6px 25px 6px 25px;
}

.faq-question {
    width: 100%;
    padding: 1.3rem 1.6rem;
    background: transparent;
    border: none;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    text-align: left;
    font-family: var(--font-serif);
    font-size: 1.1rem;
    color: var(--brown-dark);
    font-weight: 600;
    transition: var(--transition);
}

.faq-q-text {
    flex: 1;
    padding-right: 1rem;
}

.faq-icon {
    position: relative;
    width: 22px;
    height: 22px;
    flex-shrink: 0;
}

.faq-icon::before,
.faq-icon::after {
    content: '';
    position: absolute;
    background: var(--terracotta);
    border-radius: 2px;
    transition: var(--transition);
}

.faq-icon::before {
    top: 50%;
    left: 0;
    width: 100%;
    height: 3px;
    transform: translateY(-50%);
}

.faq-icon::after {
    left: 50%;
    top: 0;
    width: 3px;
    height: 100%;
    transform: translateX(-50%);
}

.faq-item.active .faq-icon::after {
    transform: translateX(-50%) scaleY(0);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease;
}

.faq-answer p {
    padding: 0 1.6rem 1.4rem;
    color: var(--text-body);
    line-height: 1.8;
}

/* ==================== 模块8：联系我们 ==================== */
.contact-wrap {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 3rem;
    align-items: start;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.info-item {
    display: flex;
    align-items: flex-start;
    gap: 1.2rem;
    padding: 1.3rem;
    background: var(--white);
    border-radius: 25px 6px 25px 6px;
    box-shadow: 0 6px 20px var(--shadow);
    transition: var(--transition);
}

.info-item:hover {
    transform: translateX(8px);
    border-radius: 6px 25px 6px 25px;
    box-shadow: 0 10px 28px var(--shadow-strong);
}

.info-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--brown-dark), var(--brown));
    color: var(--beige);
    border-radius: var(--organic-2);
    transition: var(--transition);
}

.info-item:hover .info-icon {
    border-radius: var(--organic-1);
    background: linear-gradient(135deg, var(--terracotta), var(--brown-light));
}

.info-text h4 {
    font-family: var(--font-serif);
    color: var(--brown-dark);
    margin-bottom: 0.3rem;
    font-size: 1rem;
    font-weight: 600;
}

.info-text p {
    color: var(--text-light);
    font-size: 0.95rem;
    line-height: 1.5;
}

.info-text a:hover {
    color: var(--terracotta);
}

/* 表单 */
.contact-form {
    background: var(--white);
    padding: 2.5rem;
    border-radius: 30px 8px 30px 8px;
    box-shadow: 0 15px 40px var(--shadow-strong);
}

.form-group {
    margin-bottom: 1.4rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--brown-dark);
    font-size: 0.95rem;
}

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.85rem 1.1rem;
    border: 2px solid rgba(205, 133, 63, 0.25);
    border-radius: 15px 4px 15px 4px;
    font-family: var(--font-sans);
    font-size: 0.95rem;
    color: var(--text-dark);
    background: var(--cream);
    transition: var(--transition);
    resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--terracotta);
    background: var(--white);
    border-radius: 4px 15px 4px 15px;
    box-shadow: 0 0 0 4px rgba(226, 123, 88, 0.1);
}

.form-group input.invalid,
.form-group textarea.invalid {
    border-color: #d9534f;
    background: #fdf3f2;
}

.form-error {
    display: block;
    color: #d9534f;
    font-size: 0.82rem;
    margin-top: 0.35rem;
    min-height: 1rem;
}

.form-success {
    margin-top: 1rem;
    padding: 1rem;
    background: linear-gradient(135deg, rgba(226, 123, 88, 0.1), rgba(205, 133, 63, 0.1));
    color: var(--brown-dark);
    border-radius: 15px 4px 15px 4px;
    text-align: center;
    font-weight: 500;
    border: 1px solid rgba(226, 123, 88, 0.3);
}

/* ==================== 模块9：页脚 ==================== */
.footer {
    background: linear-gradient(135deg, #3E2A1C 0%, #5C4632 50%, #8B4513 100%);
    color: var(--beige);
    padding: 4rem 0 1.5rem;
    position: relative;
    overflow: hidden;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(226, 123, 88, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 50%, rgba(205, 133, 63, 0.08) 0%, transparent 50%);
    pointer-events: none;
}

.footer-top {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
    position: relative;
    z-index: 1;
}

.footer-brand {
    max-width: 400px;
}

.footer-logo {
    margin-bottom: 1rem;
}

.footer-logo .logo-zh {
    display: block;
    font-family: var(--font-serif);
    font-size: 1.8rem;
    color: var(--beige);
    font-weight: 700;
    letter-spacing: 3px;
}

.footer-logo .logo-en {
    display: block;
    font-size: 0.78rem;
    color: var(--beige-dark);
    letter-spacing: 1px;
    margin-top: 0.3rem;
}

.footer-tagline {
    color: rgba(245, 245, 220, 0.7);
    font-family: var(--font-serif);
    font-style: italic;
    font-size: 1.05rem;
    margin-top: 1rem;
}

.footer-title {
    font-family: var(--font-serif);
    color: var(--terracotta);
    font-size: 1.1rem;
    margin-bottom: 1.2rem;
    font-weight: 600;
    letter-spacing: 1px;
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 0.7rem;
}

.footer-links a {
    color: rgba(245, 245, 220, 0.75);
    font-size: 0.92rem;
    transition: var(--transition);
    display: inline-block;
}

.footer-links a:hover {
    color: var(--terracotta);
    transform: translateX(6px);
}

.footer-bottom {
    text-align: center;
    padding-top: 1.8rem;
    border-top: 1px solid rgba(245, 245, 220, 0.15);
    position: relative;
    z-index: 1;
}

.footer-bottom p {
    color: rgba(245, 245, 220, 0.6);
    font-size: 0.85rem;
    letter-spacing: 1px;
}

/* ==================== 回到顶部 ==================== */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--brown-dark), var(--brown));
    color: var(--beige);
    border: none;
    border-radius: var(--organic-1);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 6px 20px var(--shadow-strong);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition);
    z-index: 999;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: linear-gradient(135deg, var(--terracotta), var(--brown-light));
    border-radius: var(--organic-2);
    transform: translateY(-4px);
}

/* ==================== 滚动揭示动画 ==================== */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

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

/* ==================== 响应式设计 ==================== */

/* 平板 */
@media (max-width: 992px) {
    :root {
        --section-padding: 4.5rem 0;
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .about-image-frame {
        height: 380px;
    }

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

    .news-grid {
        grid-template-columns: 1fr;
        max-width: 600px;
        margin: 0 auto;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 2.5rem 1rem;
    }

    .stat-item:nth-child(2)::after {
        display: none;
    }

    .contact-wrap {
        grid-template-columns: 1fr;
    }

    .footer-top {
        grid-template-columns: 1fr 1fr;
        gap: 2rem;
    }

    .footer-brand {
        grid-column: 1 / -1;
    }
}

/* 移动端 */
@media (max-width: 768px) {
    :root {
        --section-padding: 3.5rem 0;
    }

    /* 移动端导航 */
    .hamburger {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 320px;
        height: 100vh;
        background: linear-gradient(135deg, var(--cream) 0%, var(--beige) 100%);
        box-shadow: -10px 0 40px var(--shadow-strong);
        padding: 6rem 2rem 2rem;
        transition: right 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        z-index: 1000;
        overflow-y: auto;
    }

    .nav-menu.open {
        right: 0;
    }

    .nav-menu ul {
        flex-direction: column;
        align-items: flex-start;
        gap: 1.5rem;
    }

    .nav-link {
        font-size: 1.15rem;
    }

    .nav-cta {
        display: inline-block;
        margin-top: 0.5rem;
    }

    /* 轮播箭头隐藏 */
    .slider-arrow {
        width: 44px;
        height: 44px;
        font-size: 1.5rem;
    }

    .slider-arrow.prev {
        left: 0.8rem;
    }

    .slider-arrow.next {
        right: 0.8rem;
    }

    .hero-title {
        letter-spacing: 2px;
    }

    /* 服务卡片单列 */
    .services-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto;
    }

    /* 案例卡片 */
    .case-card {
        flex: 0 0 85%;
    }

    /* 统计数据 */
    .stats-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
        padding: 2rem 1rem;
    }

    .stat-item::after {
        display: none !important;
    }

    .stat-item:not(:last-child) {
        padding-bottom: 2rem;
        border-bottom: 1px dashed rgba(205, 133, 63, 0.3);
    }

    /* 表单 */
    .contact-form {
        padding: 1.8rem 1.3rem;
    }

    /* 页脚 */
    .footer-top {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }

    .footer-links ul {
        align-items: center;
    }

    /* 区块标题 */
    .section-header {
        margin-bottom: 2.5rem;
    }

    .about-image-badge {
        right: 10px;
        bottom: -15px;
        padding: 1rem 1.3rem;
    }

    .badge-year {
        font-size: 1.6rem;
    }

    .back-to-top {
        width: 42px;
        height: 42px;
        bottom: 1.2rem;
        right: 1.2rem;
    }
}

/* 小屏手机 */
@media (max-width: 480px) {
    .container {
        width: 92%;
    }

    .hero-tag {
        letter-spacing: 2px;
        padding: 0.3rem 1rem;
    }

    .slider-arrow {
        display: none;
    }

    .slider-dots {
        bottom: 1.5rem;
    }

    .about-image-frame {
        height: 300px;
    }
}

/* ==================== 无障碍：尊重用户动画偏好 ==================== */
@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;
    }
}