/* ==============================
   inc/style.css
   此云非云家纺独立站 - 全局样式
   规范：语义化类名、CSS变量统一管理、分层注释
   ============================== */

/* ========== 1. CSS变量与全局重置 ========== */
:root {
    /* --- 品牌配色 --- */
    --color-cloud-blue: #b0cbd9;
    --color-cloud-blue-dark: #7a9fb5;
    --color-cloud-blue-deep: #5c8a9e;
    --color-almond: #f0ebe0;
    --color-almond-light: #f7f4ed;

    /* --- 基础黑白灰 --- */
    --color-white: #ffffff;
    --color-off-white: #fafaf8;
    --color-light-gray: #f5f4f1;
    --color-border: #e8e5e0;
    --color-mid-gray: #9a9792;
    --color-text-primary: #2d2d2d;
    --color-text-secondary: #6b6b6b;
    --color-text-light: #8a8a8a;

    /* --- 交互色 --- */
    --color-success: #7cb89c;
    --color-shadow-light: rgba(0, 0, 0, 0.04);
    --color-shadow-medium: rgba(0, 0, 0, 0.08);
    --color-shadow-hover: rgba(0, 0, 0, 0.14);

    /* --- 尺寸与圆角 --- */
    --nav-height: 72px;
    --nav-height-scrolled: 56px;
    --max-width: 1200px;
    --section-padding: 80px 24px;
    --section-padding-mobile: 48px 16px;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 20px;

    /* --- 字体 --- */
    --font-zh: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    --font-en: 'Inter', 'Helvetica Neue', Arial, sans-serif;
    --font-mixed: 'Inter', 'Noto Sans SC', 'PingFang SC', sans-serif;
    --fs-xs: 0.75rem;
    --fs-sm: 0.875rem;
    --fs-base: 1rem;
    --fs-md: 1.125rem;
    --fs-lg: 1.25rem;
    --fs-xl: 1.5rem;
    --fs-2xl: 2rem;
    --fs-3xl: 2.5rem;
    --fs-hero: 3.2rem;

    /* --- 过渡 --- */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    --transition-spring: 0.4s cubic-bezier(0.25, 0.8, 0.25, 1.2);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-mixed);
    color: var(--color-text-primary);
    background-color: var(--color-off-white);
    line-height: 1.7;
    overflow-x: hidden;
    min-height: 100vh;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}
.logo-img {
    display: block;
    height: 40px;
    width: auto;
}
a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-fast);
}

ul {
    list-style: none;
}

button {
    cursor: pointer;
    border: none;
    background: none;
    font-family: inherit;
    font-size: inherit;
}

input,
textarea,
select {
    font-family: inherit;
    font-size: inherit;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 10px 14px;
    background: var(--color-white);
    color: var(--color-text-primary);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    width: 100%;
}

input:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--color-cloud-blue-dark);
    box-shadow: 0 0 0 3px rgba(176, 203, 217, 0.25);
}

/* ========== 2. 通用按钮 ========== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    border-radius: var(--radius-md);
    font-weight: 500;
    font-size: var(--fs-sm);
    letter-spacing: 0.02em;
    transition: all var(--transition-normal);
    white-space: nowrap;
    cursor: pointer;
    text-align: center;
}

.btn-primary {
    background-color: var(--color-cloud-blue-dark);
    color: var(--color-white);
    border: 2px solid var(--color-cloud-blue-dark);
}

.btn-primary:hover {
    background-color: var(--color-cloud-blue-deep);
    border-color: var(--color-cloud-blue-deep);
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(90, 130, 150, 0.3);
}

.btn-primary:active {
    transform: scale(0.97);
    transition: transform 0.1s ease;
}

.btn-outline {
    background-color: transparent;
    color: var(--color-text-primary);
    border: 2px solid var(--color-border);
}

.btn-outline:hover {
    border-color: var(--color-cloud-blue-dark);
    color: var(--color-cloud-blue-deep);
    background-color: rgba(176, 203, 217, 0.08);
    transform: translateY(-1px);
}

.btn-nav-cta {
    background-color: var(--color-cloud-blue-dark);
    color: var(--color-white);
    padding: 8px 20px;
    font-size: var(--fs-xs);
    border-radius: 20px;
    font-weight: 500;
}

.btn-nav-cta:hover {
    background-color: var(--color-cloud-blue-deep);
    transform: scale(1.04);
}

.btn-submit {
    width: 100%;
    padding: 14px 32px;
    font-size: var(--fs-base);
    margin-top: 8px;
}

/* ========== 3. 导航栏 ========== */
.nav-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    height: var(--nav-height);
    background: rgba(255, 255, 255, 0.88);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid transparent;
    transition: all var(--transition-normal);
}

.nav-header.scrolled {
    height: var(--nav-height-scrolled);
    background: rgba(255, 255, 255, 0.95);
    border-bottom-color: var(--color-border);
    box-shadow: 0 2px 16px var(--color-shadow-light);
}

.nav-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

.logo-icon {
    font-size: 1.6rem;
    line-height: 1;
}

.logo-text {
    font-size: var(--fs-lg);
    font-weight: 600;
    letter-spacing: 0.03em;
    color: var(--color-text-primary);
}

.nav-menu .nav-list {
    display: flex;
    gap: 8px;
    align-items: center;
}

.nav-link {
    padding: 8px 16px;
    border-radius: 20px;
    font-size: var(--fs-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
    position: relative;
}

.nav-link:hover {
    color: var(--color-text-primary);
    background: var(--color-light-gray);
}

.nav-link.active {
    color: var(--color-cloud-blue-deep);
    font-weight: 600;
    background: rgba(176, 203, 217, 0.15);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}

.lang-switch {
    display: flex;
    align-items: center;
    gap: 2px;
    padding: 6px 10px;
    border-radius: 16px;
    font-size: var(--fs-xs);
    font-weight: 500;
    color: var(--color-text-secondary);
    background: var(--color-light-gray);
    transition: all var(--transition-fast);
    letter-spacing: 0.02em;
}

.lang-switch:hover {
    color: var(--color-text-primary);
    background: var(--color-border);
}

.lang-switch .lang-zh.active-lang,
.lang-switch .lang-en.active-lang {
    color: var(--color-cloud-blue-deep);
    font-weight: 700;
}

.lang-divider {
    color: var(--color-mid-gray);
}

/* 汉堡菜单 */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
    z-index: 1001;
}

.hamburger-line {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text-primary);
    border-radius: 1px;
    transition: all var(--transition-normal);
}

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

.hamburger.active .hamburger-line:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

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

/* ========== 4. 首页 Hero ========== */
.section-hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding-top: var(--nav-height);
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-bg-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(1.05);
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg,
            rgba(255, 255, 255, 0.75) 0%,
            rgba(250, 250, 248, 0.85) 40%,
            rgba(250, 250, 248, 0.95) 100%);
}

.hero-content {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 60px;
    max-width: var(--max-width);
    padding: 40px 24px;
    flex-wrap: wrap;
}

.hero-product-visual {
    flex: 0 0 380px;
    max-width: 420px;
}

.hero-pillow-img {
    width: 100%;
    border-radius: var(--radius-xl);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.1);
    opacity: 0;
    transform: translateY(30px);
}

.hero-text-area {
    flex: 1;
    min-width: 280px;
    max-width: 540px;
}

.hero-slogan {
    font-size: var(--fs-hero);
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-text-primary);
    letter-spacing: -0.01em;
}

.hero-slogan-sub {
    font-size: var(--fs-2xl);
    font-weight: 400;
    color: var(--color-cloud-blue-deep);
    margin-top: 8px;
    letter-spacing: 0.02em;
}

.hero-tagline {
    font-size: var(--fs-md);
    color: var(--color-text-secondary);
    margin-top: 20px;
    letter-spacing: 0.04em;
}

.hero-btns {
    display: flex;
    gap: 16px;
    margin-top: 32px;
    flex-wrap: wrap;
}

.hero-scroll-hint {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1;
    animation: bounceDown 2s ease-in-out infinite;
}

.scroll-arrow {
    font-size: 1.4rem;
    color: var(--color-mid-gray);
}

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

/* ========== 5. 通用Section容器 ========== */
.section-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: var(--section-padding);
}

.section-title {
    font-size: var(--fs-2xl);
    font-weight: 700;
    text-align: center;
    color: var(--color-text-primary);
    margin-bottom: 8px;
    letter-spacing: 0.01em;
}

.section-subtitle {
    font-size: var(--fs-md);
    color: var(--color-text-secondary);
    text-align: center;
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* ========== 6. 优势卡片 ========== */
.section-advantages {
    background: var(--color-white);
}

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

.adv-card {
    background: var(--color-off-white);
    border-radius: var(--radius-lg);
    padding: 32px 24px;
    text-align: center;
    transition: all var(--transition-normal);
    border: 1px solid transparent;
    cursor: default;
}

.adv-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px var(--color-shadow-medium);
    border-color: var(--color-border);
    background: var(--color-white);
}

.adv-icon {
    font-size: 2.5rem;
    margin-bottom: 14px;
}

.adv-title {
    font-size: var(--fs-lg);
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--color-text-primary);
}

.adv-desc {
    font-size: var(--fs-sm);
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* ========== 7. 产品卡片 ========== */
.product-tabs {
    display: flex;
    justify-content: center;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 32px;
}

.prod-tab {
    padding: 8px 20px;
    border-radius: 20px;
    font-size: var(--fs-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
    background: var(--color-light-gray);
    transition: all var(--transition-fast);
}

.prod-tab:hover {
    background: var(--color-border);
    color: var(--color-text-primary);
}

.prod-tab.active {
    background: var(--color-cloud-blue-dark);
    color: var(--color-white);
    font-weight: 600;
}

.product-preview-grid,
.products-full-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.product-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--color-border);
    transition: all var(--transition-normal);
    cursor: pointer;
}

.product-card:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 12px 28px var(--color-shadow-hover);
}

.product-card-img {
    width: 100%;
    aspect-ratio: 4/3;
    object-fit: cover;
    background: var(--color-light-gray);
}

.product-card-body {
    padding: 16px;
}

.product-card-name {
    font-weight: 600;
    font-size: var(--fs-sm);
    color: var(--color-text-primary);
    margin-bottom: 4px;
}

.product-card-desc {
    font-size: var(--fs-xs);
    color: var(--color-text-secondary);
    line-height: 1.5;
}

.product-card-tag {
    display: inline-block;
    font-size: 0.7rem;
    padding: 3px 10px;
    border-radius: 12px;
    background: var(--color-almond-light);
    color: var(--color-cloud-blue-deep);
    margin-top: 8px;
    font-weight: 500;
}

.preview-bottom {
    text-align: center;
    margin-top: 32px;
}
/* ========== 面料模块 ========== */
.section-fabric {
    background: var(--color-off-white);
}
.fabric-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.fabric-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: 32px 24px;
    text-align: center;
    border: 1px solid var(--color-border);
    transition: all var(--transition-normal);
}
.fabric-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 28px var(--color-shadow-medium);
}
.fabric-card-icon {
    width: 48px;
    height: 48px;
    stroke: var(--color-cloud-blue-deep);
    margin-bottom: 16px;
    display: inline-block;
}
.fabric-card h3 {
    font-size: var(--fs-lg);
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--color-text-primary);
}
.fabric-card p {
    font-size: var(--fs-sm);
    color: var(--color-text-secondary);
    line-height: 1.7;
}
/* ========== 品牌理念板块（选项卡模式） ========== */
.section-brand {
    background: var(--color-almond-light);
}

.brand-tabs {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 32px;
}

.brand-tab {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: 16px 20px;
    border-radius: var(--radius-md);
    background: var(--color-white);
    border: 1px solid var(--color-border);
    cursor: pointer;
    transition: all var(--transition-normal);
    min-width: 100px;
}

.brand-tab:hover {
    border-color: var(--color-cloud-blue);
    background: var(--color-off-white);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--color-shadow-light);
}

.brand-tab.active {
    border-color: var(--color-cloud-blue-deep);
    background: var(--color-cloud-blue);
    color: var(--color-white);
}

.brand-tab.active .brand-tab-icon {
    stroke: var(--color-white);
}

.brand-tab-icon {
    width: 28px;
    height: 28px;
    stroke: var(--color-cloud-blue-deep);
    transition: stroke var(--transition-fast);
}

.brand-tab span {
    font-weight: 600;
    font-size: var(--fs-sm);
    letter-spacing: 0.03em;
}

.brand-tab small {
    font-size: 0.7rem;
    color: var(--color-text-light);
    font-weight: 400;
}

.brand-tab.active small {
    color: rgba(255, 255, 255, 0.85);
}

.brand-panels {
    max-width: 640px;
    margin: 0 auto 24px;
    position: relative;
}

.brand-panel {
    display: none;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.brand-panel.active {
    display: block;
    opacity: 1;
}

.brand-panel p {
    font-size: var(--fs-sm);
    color: var(--color-text-secondary);
    line-height: 1.9;
    text-align: center;
    padding: 8px 16px;
}

.brand-motto-wrap {
    max-width: 640px;
    margin: 0 auto;
    text-align: center;
}

.brand-motto {
    font-weight: 500;
    color: var(--color-text-primary);
    font-size: var(--fs-sm);
    padding-top: 16px;
    border-top: 1px solid var(--color-border);
}

/* 响应式 */
@media (max-width: 768px) {
    .brand-tabs {
        gap: 8px;
    }
    .brand-tab {
        padding: 12px 14px;
        min-width: 80px;
    }
    .brand-tab small {
        display: none; /* 移动端隐藏副标题，保持简洁 */
    }
}
/* 响应式调整 */
@media (max-width: 1024px) {
    .fabric-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (max-width: 768px) {
    .fabric-grid {
        grid-template-columns: 1fr;
    }
}
/* ========== 8. 工厂实力 ========== */
.section-factory {
    background: var(--color-off-white);
}

.factory-gallery {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 32px;
}

.factory-img-wrap {
    border-radius: var(--radius-md);
    overflow: hidden;
    aspect-ratio: 3/2;
}

.factory-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.factory-img-wrap:hover .factory-img {
    transform: scale(1.06);
}

.factory-info {
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
    text-align: center;
}

.factory-stat {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.factory-stat strong {
    font-size: var(--fs-xl);
    color: var(--color-cloud-blue-deep);
    font-weight: 700;
}

.factory-stat span {
    font-size: var(--fs-sm);
    color: var(--color-text-secondary);
}

/* ========== 9. 研发团队 ========== */
.section-team {
    background: var(--color-white);
}

.team-content {
    display: flex;
    gap: 40px;
    align-items: center;
    flex-wrap: wrap;
}

.team-img-wrap {
    flex: 0 0 45%;
    min-width: 300px;
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.team-img {
    width: 100%;
    border-radius: var(--radius-lg);
}

.team-text {
    flex: 1;
    min-width: 280px;
}

.team-text h3 {
    font-size: var(--fs-xl);
    font-weight: 600;
    margin-bottom: 12px;
}

.team-text p {
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: 16px;
}

.team-highlights li {
    padding: 6px 0;
    color: var(--color-text-secondary);
    font-size: var(--fs-sm);
}

/* ========== 10. 品牌理念 ========== */
/* ========== 品牌理念板块（选项卡模式，尺寸统一） ========== */
.section-brand {
    background: var(--color-almond-light);
}

.brand-tabs {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-bottom: 32px;
}

.brand-tab {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    padding: 32px 24px;
    border-radius: var(--radius-lg);
    background: var(--color-white);
    border: 1px solid var(--color-border);
    cursor: pointer;
    transition: all var(--transition-normal);
}

.brand-tab:hover {
    border-color: var(--color-cloud-blue);
    background: var(--color-off-white);
    transform: translateY(-4px);
    box-shadow: 0 12px 28px var(--color-shadow-medium);
}

.brand-tab.active {
    border-color: var(--color-cloud-blue-deep);
    background: var(--color-cloud-blue);
    color: var(--color-white);
    box-shadow: 0 8px 24px rgba(90, 130, 150, 0.2);
}

.brand-tab.active .brand-tab-icon {
    stroke: var(--color-white);
}

.brand-tab-icon {
    width: 44px;
    height: 44px;
    stroke: var(--color-cloud-blue-deep);
    transition: stroke var(--transition-fast);
}

.brand-tab span {
    font-weight: 600;
    font-size: var(--fs-lg);
    letter-spacing: 0.03em;
    color: inherit;
}

.brand-tab small {
    font-size: var(--fs-sm);
    color: var(--color-text-secondary);
    font-weight: 400;
    line-height: 1.5;
    text-align: center;
}

.brand-tab.active small {
    color: rgba(255, 255, 255, 0.85);
}

.brand-panels {
    max-width: 640px;
    margin: 0 auto 24px;
    position: relative;
}

.brand-panel {
    display: none;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.brand-panel.active {
    display: block;
    opacity: 1;
}

.brand-panel p {
    font-size: var(--fs-sm);
    color: var(--color-text-secondary);
    line-height: 1.9;
    text-align: center;
    padding: 8px 16px;
}

.brand-motto-wrap {
    max-width: 640px;
    margin: 0 auto;
    text-align: center;
}

.brand-motto {
    font-weight: 500;
    color: var(--color-text-primary);
    font-size: var(--fs-sm);
    padding-top: 16px;
    border-top: 1px solid var(--color-border);
}

/* 响应式：平板 */
@media (max-width: 1024px) {
    .brand-tabs {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }
    .brand-tab {
        padding: 28px 20px;
    }
    .brand-tab-icon {
        width: 40px;
        height: 40px;
    }
}

/* 响应式：手机 */
@media (max-width: 768px) {
    .brand-tabs {
        grid-template-columns: 1fr 1fr;
        gap: 12px;
    }
    .brand-tab {
        padding: 24px 16px;
    }
    .brand-tab-icon {
        width: 36px;
        height: 36px;
    }
    .brand-tab span {
        font-size: var(--fs-base);
    }
    .brand-tab small {
        display: none; /* 移动端隐藏副标题，保持简洁 */
    }
}
/* ========== 11. 询盘表单 ========== */
.inquiry-wrapper {
    display: flex;
    gap: 40px;
    align-items: flex-start;
}

.inquiry-social {
    flex: 0 0 240px;
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: 28px 24px;
    border: 1px solid var(--color-border);
    box-shadow: 0 4px 16px var(--color-shadow-light);
}

.inquiry-social h3 {
    font-size: var(--fs-lg);
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--color-text-primary);
}

.inquiry-social p {
    font-size: var(--fs-sm);
    color: var(--color-text-secondary);
    margin-bottom: 20px;
    line-height: 1.6;
}

.social-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.social-list li a {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: var(--fs-sm);
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.social-list li a:hover {
    background: var(--color-light-gray);
    color: var(--color-cloud-blue-deep);
}

.social-list li a svg {
    width: 18px;
    height: 18px;
    stroke: currentColor;
    flex-shrink: 0;
}

.inquiry-form {
    flex: 1;
}

/* 响应式：移动端上下堆叠 */
@media (max-width: 768px) {
    .inquiry-wrapper {
        flex-direction: column;
        gap: 24px;
    }
    .inquiry-social {
        flex: unset;
        width: 100%;
    }
}
.section-inquiry {
    background: var(--color-white);
}

.inquiry-form {
    max-width: 680px;
    margin: 0 auto;
    background: var(--color-off-white);
    border-radius: var(--radius-lg);
    padding: 32px;
    border: 1px solid var(--color-border);
}

.form-row {
    display: flex;
    gap: 16px;
    margin-bottom: 16px;
}

.form-group {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group label {
    font-size: var(--fs-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
}

/* ========== 12. FAQ ========== */
.section-faq {
    background: var(--color-off-white);
}

.faq-list {
    max-width: 720px;
    margin: 0 auto;
}

.faq-item {
    border-bottom: 1px solid var(--color-border);
    padding: 4px 0;
}

.faq-question {
    width: 100%;
    text-align: left;
    padding: 16px 8px;
    font-weight: 600;
    font-size: var(--fs-sm);
    color: var(--color-text-primary);
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: color var(--transition-fast);
}

.faq-question:hover {
    color: var(--color-cloud-blue-deep);
}

.faq-question::after {
    content: '+';
    font-size: 1.2rem;
    font-weight: 400;
    color: var(--color-mid-gray);
    transition: transform var(--transition-normal);
}

.faq-item.open .faq-question::after {
    content: '−';
    transform: rotate(180deg);
    color: var(--color-cloud-blue-deep);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal), padding var(--transition-normal);
    font-size: var(--fs-sm);
    color: var(--color-text-secondary);
    padding: 0 8px;
    line-height: 1.7;
}

.faq-item.open .faq-answer {
    max-height: 200px;
    padding: 0 8px 16px;
}

/* ========== 13. 页脚 ========== */
.site-footer {
    background: var(--color-text-primary);
    color: #c5c3be;
    padding: 48px 24px 24px;
}

.footer-container {
    max-width: var(--max-width);
    margin: 0 auto;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1.5fr 1fr;
    gap: 32px;
    margin-bottom: 32px;
}

.footer-col h4 {
    color: var(--color-white);
    font-weight: 600;
    margin-bottom: 14px;
    font-size: var(--fs-sm);
    letter-spacing: 0.03em;
}

.footer-col p,
.footer-col li {
    font-size: var(--fs-xs);
    line-height: 1.8;
    color: #b5b3ae;
}

.footer-col a {
    color: #b5b3ae;
}

.footer-col a:hover {
    color: var(--color-cloud-blue);
}

.footer-links ul li {
    margin-bottom: 4px;
}
.footer-contact-icon {
    width: 16px;
    height: 16px;
    stroke: currentColor;
    vertical-align: -3px;
    margin-right: 6px;
    display: inline-block;
}
.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    padding-top: 20px;
    text-align: center;
    font-size: var(--fs-xs);
    color: #8a8884;
}

.footer-icp {
    margin-top: 4px;
    font-size: 0.7rem;
}

/* ========== 14. 弹窗 ========== */
.modal-overlay {
    position: fixed;
    inset: 0;
    z-index: 2000;
    background: rgba(0, 0, 0, 0.45);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-normal);
}

.modal-overlay.visible {
    opacity: 1;
    pointer-events: auto;
}

.modal-dialog {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: 40px 32px;
    text-align: center;
    max-width: 420px;
    width: 90%;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.2);
    transform: translateY(20px);
    transition: transform var(--transition-normal);
}

.modal-overlay.visible .modal-dialog {
    transform: translateY(0);
}

.modal-icon {
    font-size: 3rem;
    margin-bottom: 16px;
}

.modal-title {
    font-size: var(--fs-xl);
    font-weight: 600;
    margin-bottom: 8px;
}

.modal-text {
    color: var(--color-text-secondary);
    margin-bottom: 20px;
}

/* ========== 15. 产品列表页 ========== */
.products-page-main,
.detail-page-main,
.about-page-main,
.contact-page-main {
    padding-top: calc(var(--nav-height) + 20px);
    min-height: 70vh;
}

.products-page-section,
.detail-section,
.about-section,
.contact-section {
    padding: var(--section-padding);
}

.products-filter-bar {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    justify-content: center;
    margin-bottom: 32px;
    padding: 20px;
    background: var(--color-white);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
}

.filter-group {
    display: flex;
    align-items: center;
    gap: 8px;
}

.filter-group label {
    font-size: var(--fs-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
    white-space: nowrap;
}

.filter-select {
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    font-size: var(--fs-sm);
    min-width: 140px;
    cursor: pointer;
}

.pagination-placeholder {
    text-align: center;
    margin-top: 32px;
}

.page-info {
    font-size: var(--fs-sm);
    color: var(--color-text-secondary);
}

/* ========== 16. 产品详情页 ========== */
.breadcrumb {
    font-size: var(--fs-sm);
    color: var(--color-text-light);
    margin-bottom: 24px;
}

.breadcrumb a {
    color: var(--color-cloud-blue-deep);
}

.breadcrumb a:hover {
    text-decoration: underline;
}

.detail-layout {
    display: flex;
    gap: 40px;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.detail-gallery {
    flex: 0 0 45%;
    min-width: 320px;
}

.gallery-main {
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin-bottom: 12px;
    aspect-ratio: 5/4;
    background: var(--color-light-gray);
}

.gallery-main img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.gallery-thumbs {
    display: flex;
    gap: 8px;
}

.gallery-thumbs img {
    width: 70px;
    height: 56px;
    object-fit: cover;
    border-radius: var(--radius-sm);
    cursor: pointer;
    border: 2px solid transparent;
    opacity: 0.7;
    transition: all var(--transition-fast);
}

.gallery-thumbs img:hover,
.gallery-thumbs img.active-thumb {
    opacity: 1;
    border-color: var(--color-cloud-blue-dark);
}

.detail-info {
    flex: 1;
    min-width: 280px;
}

.detail-product-name {
    font-size: var(--fs-2xl);
    font-weight: 700;
    margin-bottom: 8px;
}

.detail-selling-point {
    font-size: var(--fs-md);
    color: var(--color-cloud-blue-deep);
    margin-bottom: 20px;
    font-weight: 500;
}

.detail-specs h3 {
    font-size: var(--fs-base);
    font-weight: 600;
    margin-bottom: 10px;
}

.specs-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 16px;
}

.specs-table td {
    padding: 8px 12px;
    border-bottom: 1px solid var(--color-border);
    font-size: var(--fs-sm);
}

.specs-table td:first-child {
    font-weight: 500;
    color: var(--color-text-secondary);
    width: 35%;
}

.detail-custom-note {
    background: var(--color-almond-light);
    border-radius: var(--radius-sm);
    padding: 12px 16px;
    font-size: var(--fs-sm);
    margin-bottom: 20px;
    color: var(--color-text-primary);
}

.detail-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.detail-extra {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-bottom: 40px;
}

.detail-desc-block {
    background: var(--color-white);
    border-radius: var(--radius-md);
    padding: 24px;
    border: 1px solid var(--color-border);
}

.detail-desc-block h3 {
    font-weight: 600;
    margin-bottom: 10px;
    font-size: var(--fs-base);
}

.detail-desc-block p {
    color: var(--color-text-secondary);
    font-size: var(--fs-sm);
    line-height: 1.7;
}

.detail-related {
    margin-top: 20px;
}

.related-title {
    font-size: var(--fs-lg);
    font-weight: 600;
    margin-bottom: 16px;
    text-align: center;
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

/* ========== 17. 关于我们页 ========== */
.about-block {
    margin-bottom: 36px;
}

.about-block h2 {
    font-size: var(--fs-xl);
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--color-text-primary);
}

.about-block p {
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: 12px;
}

.about-gallery {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-top: 16px;
}

.about-img {
    border-radius: var(--radius-md);
    width: 100%;
    aspect-ratio: 5/3.5;
    object-fit: cover;
}

.cert-gallery {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    margin-top: 12px;
}

.cert-card {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 14px 16px;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: var(--fs-sm);
}

.case-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-top: 12px;
}

.case-card {
    background: var(--color-white);
    border-radius: var(--radius-md);
    padding: 20px;
    border: 1px solid var(--color-border);
}

.case-card h4 {
    font-weight: 600;
    margin-bottom: 8px;
    font-size: var(--fs-sm);
}

.case-card p {
    font-size: var(--fs-xs);
    color: var(--color-text-secondary);
}

/* ========== 18. 联系页 ========== */
.contact-layout {
    display: flex;
    gap: 32px;
    flex-wrap: wrap;
}

.contact-info-card {
    flex: 0 0 35%;
    min-width: 280px;
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: 28px;
    border: 1px solid var(--color-border);
}

.contact-info-card h3 {
    font-weight: 600;
    margin-bottom: 16px;
    font-size: var(--fs-lg);
}

.contact-info-item {
    padding: 8px 0;
    font-size: var(--fs-sm);
    color: var(--color-text-secondary);
    border-bottom: 1px solid var(--color-border);
}

.map-placeholder {
    margin-top: 16px;
    background: var(--color-light-gray);
    border-radius: var(--radius-md);
    height: 180px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-mid-gray);
    font-size: var(--fs-sm);
    border: 1px dashed var(--color-border);
}

.contact-form-card {
    flex: 1;
    min-width: 300px;
}

/* ========== 19. 响应式 - 平板 (≤1024px) ========== */
@media (max-width: 1024px) {
    :root {
        --fs-hero: 2.4rem;
        --fs-2xl: 1.6rem;
        --fs-xl: 1.3rem;
        --section-padding: 56px 20px;
    }

    .advantages-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .product-preview-grid,
    .products-full-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .factory-gallery {
        grid-template-columns: repeat(2, 1fr);
    }
    .detail-layout {
        flex-direction: column;
    }
    .detail-gallery {
        flex: unset;
        min-width: unset;
    }
    .detail-extra {
        grid-template-columns: 1fr;
    }
    .related-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
    .about-gallery {
        grid-template-columns: repeat(2, 1fr);
    }
    .contact-layout {
        flex-direction: column;
    }
}
/* ========== 法律声明页专属样式 ========== */
.legal-page-main {
    padding-top: calc(var(--nav-height) + 20px);
    min-height: 70vh;
    background: var(--color-white);
}

.legal-section {
    max-width: 900px;
    margin: 0 auto;
    padding: var(--section-padding);
}

.legal-section h2 {
    font-size: var(--fs-2xl);
    font-weight: 700;
    margin-top: 48px;
    margin-bottom: 16px;
    color: var(--color-text-primary);
    border-bottom: 2px solid var(--color-border);
    padding-bottom: 8px;
}

.legal-section h3 {
    font-size: var(--fs-lg);
    font-weight: 600;
    margin-top: 24px;
    margin-bottom: 12px;
    color: var(--color-text-primary);
}

.legal-section p,
.legal-section li {
    font-size: var(--fs-sm);
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: 12px;
}

.legal-section ul,
.legal-section ol {
    padding-left: 24px;
    margin-bottom: 16px;
}

.legal-section ul li {
    list-style: disc;
}

.legal-section ol li {
    list-style: decimal;
}

/* 页面内锚点导航 */
.legal-nav {
    position: sticky;
    top: calc(var(--nav-height) + 20px);
    background: var(--color-white);
    padding: 20px;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    margin-bottom: 32px;
    box-shadow: 0 4px 12px var(--color-shadow-light);
    z-index: 10;
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.legal-nav a {
    display: inline-block;
    padding: 6px 14px;
    color: var(--color-cloud-blue-deep);
    text-decoration: none;
    font-size: var(--fs-sm);
    border-radius: 20px;
    background: var(--color-off-white);
    transition: all var(--transition-fast);
}

.legal-nav a:hover {
    background: var(--color-cloud-blue);
    color: var(--color-white);
}

/* 移动端适配 */
@media (max-width: 768px) {
    .legal-section {
        padding: var(--section-padding-mobile);
    }
    .legal-nav {
        flex-direction: column;
        gap: 8px;
    }
    .legal-nav a {
        text-align: center;
        width: 100%;
    }
}
/* ========== 20. 响应式 - 手机 (≤768px) ========== */
@media (max-width: 768px) {
    :root {
        --nav-height: 60px;
        --nav-height-scrolled: 52px;
        --fs-hero: 1.8rem;
        --fs-2xl: 1.35rem;
        --fs-xl: 1.15rem;
        --fs-lg: 1rem;
        --section-padding: 40px 14px;
    }

    /* 导航 - 汉堡菜单 */
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 75%;
        max-width: 320px;
        height: 100vh;
        background: var(--color-white);
        padding: 80px 24px 40px;
        box-shadow: -4px 0 30px rgba(0, 0, 0, 0.12);
        transition: right var(--transition-normal);
        z-index: 999;
    }

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

    .nav-menu .nav-list {
        flex-direction: column;
        gap: 4px;
    }

    .nav-link {
        display: block;
        padding: 12px 16px;
        font-size: var(--fs-base);
        border-radius: var(--radius-sm);
    }

    .hamburger {
        display: flex;
    }

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

    /* 移动端遮罩 */
    .mobile-overlay {
        position: fixed;
        inset: 0;
        background: rgba(0, 0, 0, 0.3);
        z-index: 998;
        opacity: 0;
        pointer-events: none;
        transition: opacity var(--transition-normal);
    }

    .mobile-overlay.visible {
        opacity: 1;
        pointer-events: auto;
    }

    /* Hero */
    .hero-content {
        flex-direction: column;
        text-align: center;
        gap: 28px;
    }
    .hero-product-visual {
        flex: unset;
        max-width: 280px;
    }
    .hero-btns {
        justify-content: center;
    }
    .hero-slogan-sub {
        font-size: 1.1rem;
    }

    /* 卡片 */
    .advantages-grid {
        grid-template-columns: 1fr;
        gap: 14px;
    }
    .product-preview-grid,
    .products-full-grid {
        grid-template-columns: 1fr;
        gap: 14px;
    }
    .factory-gallery {
        grid-template-columns: 1fr 1fr;
        gap: 10px;
    }
    .factory-info {
        gap: 20px;
    }
    .team-content {
        flex-direction: column;
    }
    .form-row {
        flex-direction: column;
        gap: 12px;
    }
    .inquiry-form {
        padding: 20px 16px;
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    .products-filter-bar {
        flex-direction: column;
        gap: 10px;
    }
    .filter-group {
        flex-wrap: wrap;
    }
    .detail-actions {
        flex-direction: column;
    }
    .detail-actions .btn {
        width: 100%;
        text-align: center;
    }
    .related-grid {
        grid-template-columns: 1fr 1fr;
        gap: 10px;
    }
    .about-gallery {
        grid-template-columns: 1fr;
    }
    .cert-gallery {
        grid-template-columns: 1fr;
    }
    .case-cards {
        grid-template-columns: 1fr;
    }
    .contact-layout {
        flex-direction: column;
    }
    .product-tabs {
        gap: 6px;
    }
    .prod-tab {
        padding: 6px 14px;
        font-size: 0.75rem;
    }
    .detail-layout {
        gap: 20px;
    }
    .gallery-thumbs img {
        width: 54px;
        height: 42px;
    }
}

/* ========== 21. 响应式 - 小手机 (≤480px) ========== */
@media (max-width: 480px) {
    .hero-pillow-img {
        max-width: 220px;
        margin: 0 auto;
    }
    .hero-slogan {
        font-size: 1.5rem;
    }
    .factory-gallery {
        grid-template-columns: 1fr;
    }
    .related-grid {
        grid-template-columns: 1fr;
    }
    .section-title {
        font-size: 1.2rem;
    }
}