/* ========================================
   RESET & BASE
   ======================================== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* ===== 爱马仕橙主色调 ===== */
    --color-primary: #FF4800;          /* 爱马仕橙（主色） */
    --color-primary-light: #FF6A33;    /* 橙浅色（hover/浅底） */
    --color-primary-dark: #D63A00;     /* 橙深色（按下/阴影） */
    --color-accent: #FF4800;           /* 强调色 = 主色 */
    --color-accent-light: #FFB088;     /* 浅橙（副标/发光文字） */
    --color-dark: #0D0D0D;            /* 主文字/深底 */
    --color-dark-2: #1A1A1A;          /* 页脚深底 */
    --color-gray: #6B7280;
    --color-gray-light: #E8E8E8;
    --color-white: #ffffff;
    --color-bg: #F7F5F3;              /* 暖白（保留温度感） */
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
    --shadow-md: 0 8px 30px rgba(0,0,0,0.08);
    --shadow-lg: 0 20px 60px rgba(0,0,0,0.12);
    --shadow-xl: 0 30px 80px rgba(0,0,0,0.15);
    --shadow-orange: 0 4px 15px rgba(255,72,0,0.35);
    --shadow-orange-lg: 0 8px 25px rgba(255,72,0,0.45);
    --radius: 12px;
    --radius-lg: 20px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: 'Noto Sans SC', 'WenQuanYi Micro Hei', sans-serif;
    color: var(--color-dark);
    background: var(--color-white);
    line-height: 1.6;
    overflow-x: hidden;
}

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

ul {
    list-style: none;
}

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

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ========================================
   BUTTONS
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: 50px;
    font-size: 15px;
    font-weight: 500;
    letter-spacing: 0.5px;
    transition: var(--transition);
    cursor: pointer;
    border: 2px solid transparent;
    white-space: nowrap;
}

.btn-primary {
    background: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-orange);
    /** opacity: 0.8; **/
}

.btn-primary:hover {
    background: var(--color-primary-light);
    border-color: var(--color-primary-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-orange-lg);
    opacity: 1;
}

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

.btn-outline:hover {
    background: var(--color-white);
    color: var(--color-dark);
    border-color: var(--color-white);
}

.btn-outline-dark {
    background: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}

.btn-outline-dark:hover {
    background: var(--color-primary);
    color: var(--color-white);
}

.btn-outline-light {
    background: transparent;
    color: var(--color-white);
    border-color: rgba(255,255,255,0.5);
}

.btn-outline-light:hover {
    background: var(--color-white);
    color: var(--color-dark);
}

/* ========================================
   NAVIGATION
   ======================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 18px 0;
    transition: var(--transition);
    background: transparent;
}

.navbar.scrolled {
    background: #ff480099;
    backdrop-filter: blur(12px);
    padding: 12px 0;
    box-shadow: 0 2px 20px rgba(0,0,0,0.1);
}

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    flex-direction: column;
    line-height: 1.1;
    color: var(--color-white);
}

.logo-cn {
    font-size: 22px;
    font-weight: 900;
    letter-spacing: 2px;
}

.logo-en {
    font-size: 10px;
    font-weight: 300;
    letter-spacing: 3px;
    opacity: 0.7;
    margin-top: 2px;
}

.nav-menu {
    display: flex;
    gap: 36px;
}

.nav-link {
    color: rgba(255,255,255,0.85);
    font-size: 14px;
    font-weight: 400;
    letter-spacing: 0.5px;
    position: relative;
    padding: 4px 0;
    transition: var(--transition);
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: var(--transition);
}

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

.nav-cta {
    display: flex;
    align-items: center;
}

.nav-phone {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--color-white);
    font-size: 14px;
    font-weight: 500;
    padding: 8px 18px;
    border: 1px solid rgba(255,255,255,0.3);
    border-radius: 50px;
    transition: var(--transition);
}

.nav-phone:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-white);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

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

/* ========================================
   HERO SECTION
   ======================================== */
.hero {
    position: relative;
    height: 100vh;
    min-height: 700px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: url('https://images.unsplash.com/photo-1600596542815-ffad4c1539a9?w=1920&q=85') center/cover no-repeat;
    background-attachment: fixed;
    transform: scale(1.05);
    animation: heroZoom 20s ease-out infinite alternate;
}

@keyframes heroZoom {
    0% { transform: scale(1.05); }
    100% { transform: scale(1.12); }
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        135deg,
        rgba(13, 13, 13, 0.3) 0%,
        rgba(13, 13, 13, 0.4) 50%,
        rgba(26, 26, 26, 0.1) 100%
    );
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: var(--color-white);
    padding: 0 24px;
    max-width: 900px;
}

.hero-badge {
    display: inline-block;
    padding: 8px 24px;
    background: rgba(255, 72, 0, 0.2);
    border: 1px solid var(--color-primary);
    border-radius: 50px;
    font-size: 13px;
    letter-spacing: 3px;
    color: var(--color-accent-light);
    margin-bottom: 32px;
    backdrop-filter: blur(4px);
}

.hero-title {
    font-size: clamp(40px, 6vw, 72px);
    font-weight: 900;
    line-height: 1.15;
    margin-bottom: 20px;
}

.title-line {
    display: block;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeUp 0.8s ease forwards;
}

.title-line:nth-child(2) {
    animation-delay: 0.2s;
}

@keyframes fadeUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-subtitle {
    font-size: 14px;
    letter-spacing: 6px;
    color: var(--color-primary);
    margin-bottom: 16px;
    opacity: 0;
    animation: fadeUp 0.8s ease 0.4s forwards;
}

.hero-desc {
    font-size: 16px;
    color: rgba(255,255,255,0.8);
    margin-bottom: 40px;
    opacity: 0;
    animation: fadeUp 0.8s ease 0.5s forwards;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    opacity: 0;
    animation: fadeUp 0.8s ease 0.6s forwards;
}

.hero-scroll {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    color: rgba(255,255,255,0.6);
    font-size: 12px;
    letter-spacing: 2px;
    z-index: 2;
}

.scroll-line {
    width: 1px;
    height: 50px;
    background: linear-gradient(to bottom, var(--color-primary), transparent);
    animation: scrollPulse 2s ease infinite;
}

@keyframes scrollPulse {
    0%, 100% { opacity: 0.3; transform: scaleY(0.6); }
    50% { opacity: 1; transform: scaleY(1); }
}

/* Hero Stats */
.hero-stats {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    background: var(--color-primary);
    backdrop-filter: blur(10px);
    z-index: 3;
    border-top: 1px solid rgba(255,72,0,0.2);
}

.stat-item {
    padding: 28px 24px;
    text-align: center;
    color: var(--color-white);
    border-right: 1px solid rgba(255,255,255,0.15);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

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

.stat-num {
    font-size: 42px;
    font-weight: 900;
    color: #F2EDE8;
    line-height: 1;
}

.stat-unit {
    font-size: 16px;
    font-weight: 500;
    color: #F2EDE8;
}

.stat-label {
    font-size: 13px;
    color: rgba(255,255,255,0.6);
    letter-spacing: 1px;
    margin-top: 4px;
}

/* ========================================
   SECTION HEADER (shared)
   ======================================== */
.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-tag {
    display: inline-block;
    font-size: 12px;
    letter-spacing: 4px;
    color: var(--color-primary);
    font-weight: 500;
    margin-bottom: 12px;
    text-transform: uppercase;
}

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

.section-title {
    font-size: clamp(28px, 4vw, 40px);
    font-weight: 900;
    color: var(--color-dark);
    margin-bottom: 12px;
    letter-spacing: 1px;
}

.section-desc {
    font-size: 15px;
    color: var(--color-gray);
    max-width: 600px;
    margin: 0 auto;
}

/* ========================================
   WORKFLOW SECTION
   ======================================== */
.workflow {
    padding: 120px 0;
    background: var(--color-bg);
    position: relative;
}

.workflow-timeline {
    position: relative;
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 16px;
}

.timeline-line {
    position: absolute;
    top: 40px;
    left: 5%;
    right: 5%;
    height: 2px;
    background: linear-gradient(to right, var(--color-primary), var(--color-primary-light));
    opacity: 0.3;
}

.workflow-step {
    text-align: center;
    position: relative;
    padding: 0 8px;
}

.step-icon {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    background: var(--color-white);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: var(--color-primary);
    box-shadow: var(--shadow-md);
    position: relative;
    z-index: 2;
    transition: var(--transition);
    border: 2px solid transparent;
}

.workflow-step:hover .step-icon {
    background: var(--color-primary);
    color: var(--color-white);
    transform: translateY(-4px);
    box-shadow: 0 12px 30px rgba(255,72,0,0.35);
    border-color: var(--color-primary);
}

.workflow-step[data-step]::before {
    content: attr(data-step);
    position: absolute;
    top: -8px;
    right: calc(50% - 44px);
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--color-primary);
    color: var(--color-white);
    font-size: 11px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 3;
}

.workflow-step h3 {
    font-size: 16px;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: 8px;
}

.workflow-step p {
    font-size: 13px;
    color: var(--color-gray);
    line-height: 1.5;
}

/* ========================================
   PRODUCT DETAIL SECTION
   ======================================== */
.product-detail {
    position: relative;
    padding: 120px 0;
    background: var(--color-dark);
    overflow: hidden;
}

/* 左半屏样角大图背景 */
.detail-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 58%;
    height: 100%;
    background:
        linear-gradient(120deg, rgba(13, 13, 13, 0.55) 0%, rgba(13, 13, 13, 0.15) 55%, rgba(13, 13, 13, 0) 100%),
        url('images/sample-corner.png') center / cover no-repeat;
}

/* 图片与右侧深色背景的过渡 */
.detail-fade {
    position: absolute;
    top: 0;
    left: 46%;
    width: 24%;
    height: 100%;
    background: linear-gradient(to right, rgba(13, 13, 13, 0) 0%, var(--color-dark) 100%);
    pointer-events: none;
}

/* 样角实拍标注 */
.detail-bg-note {
    position: absolute;
    left: 24px;
    bottom: 32px;
    z-index: 2;
    background: rgba(13, 13, 13, 0.65);
    backdrop-filter: blur(6px);
    color: var(--color-white);
    font-size: 13px;
    letter-spacing: 1px;
    padding: 10px 18px;
    border-radius: 50px;
    white-space: nowrap;
}

.detail-grid {
    position: relative;
    z-index: 2;
    display: flex;
    justify-content: flex-end;
}

.detail-content {
    width: 50%;
}

.detail-content .section-tag,
.detail-content .section-title {
    text-align: left;
}

.detail-content .section-tag {
    color: var(--color-accent-light);
}

.detail-content .section-title {
    color: var(--color-white);
}

.detail-content .section-desc {
    text-align: left;
    margin: 0 0 40px;
    color: rgba(255, 255, 255, 0.65);
}

.feature-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.feature-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
    padding: 18px 20px;
    border-radius: var(--radius);
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    transition: var(--transition);
}

.feature-item:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 72, 0, 0.35);
    transform: translateX(6px);
}

.feature-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary);
    color: var(--color-white);
    box-shadow: var(--shadow-orange);
}

.feature-text h3 {
    font-size: 17px;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 6px;
}

.feature-text p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.6;
}

/* ========================================
   VALUE PROPOSITION (Full Screen)
   ======================================== */
.value-prop {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding: 120px 0;
}

.value-bg {
    position: absolute;
    inset: 0;
    background: url('https://images.unsplash.com/photo-1503387762-592deb58ef4e?w=1920&q=85') center/cover no-repeat;
    background-attachment: fixed;
}

.value-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        135deg,
        rgba(13, 13, 13, 0.88) 0%,
        rgba(26, 26, 26, 0.82) 100%
    );
}

.value-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: var(--color-white);
    padding: 0 24px;
    max-width: 1100px;
    width: 100%;
}

.value-title {
    font-size: clamp(32px, 5vw, 48px);
    font-weight: 900;
    margin: 12px 0 60px;
    letter-spacing: 2px;
}

.value-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
    text-align: left;
}

.value-card {
    background: rgba(255,255,255,0.06);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--radius-lg);
    padding: 40px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.value-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(to right, var(--color-primary), transparent);
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition);
}

.value-card:hover {
    background: rgba(255,255,255,0.1);
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.2);
    border-color: rgba(255,72,0,0.25);
}

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

.value-num {
    font-size: 14px;
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: 2px;
    margin-bottom: 12px;
}

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

.value-card p {
    font-size: 14px;
    color: rgba(255,255,255,0.7);
    line-height: 1.7;
}

/* ========================================
   BRAND HISTORY STRIP
   ======================================== */
.brand-strip {
    padding: 60px 0;
    background: var(--color-primary);
    color: var(--color-white);
}

.brand-strip-inner {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 48px;
    align-items: center;
}

.brand-year {
    text-align: center;
    padding-right: 48px;
    border-right: 1px solid rgba(255,255,255,0.25);
}

.year-num {
    display: block;
    font-size: 56px;
    font-weight: 900;
    color: var(--color-white);
    line-height: 1;
}

.year-label {
    font-size: 13px;
    color: rgba(255,255,255,0.7);
    letter-spacing: 2px;
    margin-top: 4px;
    display: block;
}

.brand-strip-text p {
    font-size: 15px;
    color: rgba(255,255,255,0.85);
    line-height: 1.8;
}

.brand-strip-text strong {
    color: var(--color-white);
    font-weight: 700;
}

.brand-strip-logos {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.brand-strip-logos span {
    padding: 8px 20px;
    border: 1px solid rgba(255,255,255,0.35);
    border-radius: 50px;
    font-size: 12px;
    letter-spacing: 1px;
    color: rgba(255,255,255,0.85);
    white-space: nowrap;
    background: rgba(255,255,255,0.08);
}

/* ========================================
   PRODUCTS SECTION
   ======================================== */
.products {
    padding: 120px 0;
    background: var(--color-white);
}

.product-tabs {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 56px;
    flex-wrap: wrap;
}

.tab-btn {
    padding: 12px 36px;
    border: 2px solid var(--color-gray-light);
    background: transparent;
    border-radius: 50px;
    font-size: 15px;
    font-weight: 500;
    color: var(--color-gray);
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
}

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

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

.product-panel {
    display: none;
    animation: fadeIn 0.5s ease;
}

.product-panel.active {
    display: block;
}

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

/* 产品中心网格：容量按 8 产品 + 1 CTA 设计（12 格 = 4×3）
   首卡 .featured 占 2×2，grid-auto-flow: dense 保证错落填满无空洞。
   任意产品数量（4/3/8 款）下布局均自动美观，无需改本规则。 */
.product-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    grid-auto-flow: dense;
}

.product-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid var(--color-gray-light);
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 50px rgba(255,72,0,0.15);
    border-color: rgba(255,72,0,0.3);
}

/* 主推款：横跨两列两行的大卡 */
.product-card.featured {
    grid-column: span 2;
    grid-row: span 2;
    display: flex;
    flex-direction: column;
}

.product-card.featured .product-img {
    height: auto;
    flex: 1;
    min-height: 320px;
}

.product-img {
    height: 220px;
    position: relative;
    overflow: hidden;
}

.product-img::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom, transparent 50%, rgba(0,0,0,0.3));
}

.product-badge {
    position: absolute;
    top: 16px;
    right: 16px;
    z-index: 2;
    padding: 4px 14px;
    background: var(--color-primary);
    color: var(--color-white);
    font-size: 11px;
    font-weight: 700;
    border-radius: 50px;
    letter-spacing: 1px;
}

.product-info {
    padding: 24px;
}

.product-info h3 {
    font-size: 17px;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: 8px;
}

.product-info p {
    font-size: 13px;
    color: var(--color-gray);
    margin-bottom: 16px;
    line-height: 1.5;
}

.product-link {
    font-size: 13px;
    color: var(--color-primary);
    font-weight: 500;
    transition: var(--transition);
}

.product-card:hover .product-link {
    color: var(--color-primary-light);
}

/* 产品区 CTA 补位卡 */
.product-cta-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    gap: 6px;
    padding: 24px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-white);
    box-shadow: var(--shadow-orange);
    transition: var(--transition);
    min-height: 100%;
}

.product-cta-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 50px rgba(255,72,0,0.35);
}

.cta-plus {
    font-size: 40px;
    font-weight: 300;
    line-height: 1;
    margin-bottom: 4px;
    color: var(--color-white);
}

.product-cta-card h4 {
    font-size: 17px;
    font-weight: 700;
    color: var(--color-white);
    margin: 0;
}

.product-cta-card p {
    font-size: 13px;
    color: rgba(255,255,255,0.85);
    margin: 0;
}

.cta-arrow {
    font-size: 13px;
    color: rgba(255,255,255,0.9);
    margin-top: 6px;
    letter-spacing: 1px;
}

/* ========================================
   CASES SECTION
   ======================================== */
.cases {
    padding: 120px 0;
    background: var(--color-bg);
}

.cases-showcase {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-auto-rows: 280px;
    gap: 16px;
}

.case-item {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    cursor: pointer;
}

.case-item.large {
    grid-row: span 2;
}

.case-img {
    width: 100%;
    height: 100%;
    transition: transform 0.6s ease;
}

.case-item:hover .case-img {
    transform: scale(1.06);
}

.case-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(13,13,13,0.85) 0%, transparent 60%);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 28px;
    color: var(--color-white);
    transition: var(--transition);
}

.case-item:hover .case-overlay {
    background: linear-gradient(to top, rgba(13,13,13,0.92) 0%, rgba(255,72,0,0.15) 60%);
}

.case-cat {
    display: inline-block;
    padding: 4px 14px;
    background: var(--color-primary);
    color: var(--color-white);
    font-size: 11px;
    font-weight: 700;
    border-radius: 50px;
    margin-bottom: 10px;
    align-self: flex-start;
}

.case-overlay h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 6px;
}

.case-overlay p {
    font-size: 13px;
    color: rgba(255,255,255,0.7);
}

/* ========================================
   NEWS SECTION
   ======================================== */
.news {
    padding: 120px 0;
    background: var(--color-white);
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.news-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-gray-light);
    transition: var(--transition);
}

.news-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 40px rgba(255,72,0,0.12);
    border-color: rgba(255,72,0,0.25);
}

/* featured 大卡：左图右文横向，仅占 1 行高，高度贴合内容、底部不留空白 */
.news-card.featured {
    grid-column: span 2;
    grid-row: span 1;
    display: flex;
    flex-direction: row;
    align-items: stretch;
}

.news-card.featured .news-img {
    flex: 0 0 50%;
    width: 50%;
    height: auto;
    min-height: 100%;
}

.news-card.featured .news-body {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.news-img {
    height: 200px;
    overflow: hidden;
}

.news-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

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

.news-body {
    padding: 28px;
}

.news-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 14px;
}

.news-meta time {
    font-size: 13px;
    color: var(--color-gray);
}

.news-cat {
    padding: 3px 12px;
    background: rgba(255,72,0,0.08);
    color: var(--color-primary);
    font-size: 11px;
    border-radius: 50px;
    font-weight: 500;
}

/* featured 大卡新增的顶部标签：右对齐贴近右侧卡片列，弱化大标题视觉权重 */
.news-tag-label {
    display: block;
    width: fit-content;
    margin-left: auto;
    margin-bottom: 12px;
    padding: 4px 14px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-white);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 2px;
    border-radius: 50px;
    box-shadow: var(--shadow-orange);
}

.news-card h3 {
    font-size: 17px;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: 10px;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-card.featured h3 {
    font-size: 18px;
    -webkit-line-clamp: 3;
}

.news-card p {
    font-size: 14px;
    color: var(--color-gray);
    line-height: 1.6;
    margin-bottom: 16px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-card.featured p {
    -webkit-line-clamp: 3;
}

.news-link {
    font-size: 13px;
    color: var(--color-primary);
    font-weight: 500;
    transition: var(--transition);
}

.news-link:hover {
    color: var(--color-primary-light);
}

/* 新闻网格底部 CTA 补位卡：横跨 2 列，填充 featured 降为 1 行后腾出的末行空间 */
.news-cta-card {
    grid-column: span 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    gap: 6px;
    padding: 24px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-white);
    box-shadow: var(--shadow-orange);
    transition: var(--transition);
}

.news-cta-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 40px rgba(255,72,0,0.35);
}

.news-cta-card h4 {
    font-size: 18px;
    font-weight: 700;
}

.news-cta-card p {
    font-size: 13px;
    opacity: 0.9;
}

/* ========================================
   CTA SECTION
   ======================================== */
.cta-section {
    padding: 80px 0;
    background: linear-gradient(rgba(18,14,10,0.72), rgba(18,14,10,0.72)), url('images/cta-bg.png') center/cover no-repeat;
    color: var(--color-white);
}

.cta-inner {
    text-align: center;
}

.cta-inner h2 {
    font-size: clamp(26px, 4vw, 36px);
    font-weight: 900;
    margin-bottom: 12px;
}

.cta-inner p {
    font-size: 16px;
    color: rgba(255,255,255,0.7);
    margin-bottom: 32px;
}

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

/* ========================================
   FOOTER
   ======================================== */
.footer {
    background: var(--color-dark-2);
    color: rgba(255,255,255,0.7);
    padding: 80px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 48px;
    margin-bottom: 60px;
}

.footer-logo {
    display: flex;
    flex-direction: column;
    line-height: 1.1;
    color: var(--color-white);
    margin-bottom: 20px;
}

.footer-desc {
    font-size: 14px;
    line-height: 1.7;
    margin-bottom: 24px;
    max-width: 380px;
}

.footer-social {
    display: flex;
    gap: 12px;
}

.footer-social a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255,255,255,0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255,255,255,0.6);
    transition: var(--transition);
}

.footer-social a:hover {
    background: var(--color-primary);
    color: var(--color-white);
}

.footer-col h4 {
    font-size: 16px;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 12px;
}

.footer-col h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 30px;
    height: 2px;
    background: var(--color-primary);
}

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

.footer-col ul li a {
    font-size: 14px;
    color: rgba(255,255,255,0.55);
    transition: var(--transition);
}

.footer-col ul li a:hover {
    color: var(--color-primary);
    padding-left: 6px;
}

.contact-list li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 14px;
    color: rgba(255,255,255,0.55);
    margin-bottom: 14px;
}

.contact-list svg {
    flex-shrink: 0;
    margin-top: 2px;
    color: var(--color-primary);
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.08);
    padding: 24px 0;
    text-align: center;
}

.footer-bottom p {
    font-size: 13px;
    color: rgba(255,255,255,0.35);
}

/* ========================================
   FLOATING CONTACT
   ======================================== */
.float-contact {
    position: fixed;
    right: 24px;
    bottom: 24px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    z-index: 999;
}

.float-btn {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    cursor: pointer;
    border: none;
    transition: var(--transition);
    box-shadow: var(--shadow-md);
}

.float-btn.phone {
    background: var(--color-primary);
}

.float-btn.phone:hover {
    background: var(--color-primary-light);
    transform: scale(1.1);
}

.float-btn.wechat {
    background: #07c160;
}

.float-btn.wechat:hover {
    background: #06ad56;
    transform: scale(1.1);
}

.float-btn.top {
    background: var(--color-primary);
    color: var(--color-white);
    opacity: 0;
    pointer-events: none;
    transform: translateY(20px);
}

.float-btn.top.visible {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
}

.float-btn.top:hover {
    background: var(--color-primary-light);
    transform: scale(1.1);
}

/* ========================================
   ANIMATIONS ON SCROLL
   ======================================== */
.fade-in-up {
    opacity: 0;
    transform: translateY(40px);
    /* --stagger 由 JS 按卡片序号注入，实现错峰入场；默认 0 不影响其他页面 */
    transition: opacity 0.8s ease var(--stagger, 0ms), transform 0.8s ease var(--stagger, 0ms);
}

.fade-in-up.visible {
    opacity: 1;
    transform: translateY(0);
}
.highlight-years-1st {
    color: var(--color-primary);
}

/* ========================================
   RESPONSIVE
   ======================================== */
@media (max-width: 1024px) {
    .detail-grid {
        justify-content: flex-start;
    }
    .detail-content {
        width: 100%;
    }
    .detail-bg {
        width: 100%;
        height: 42vh;
        min-height: 300px;
    }
    .detail-fade {
        top: auto;
        bottom: 0;
        left: 0;
        width: 100%;
        height: 25%;
        background: linear-gradient(to bottom, rgba(13, 13, 13, 0) 0%, var(--color-dark) 100%);
    }
    .nav-menu {
        display: none;
    }
    .nav-toggle {
        display: flex;
    }
    .nav-menu.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--color-dark);
        padding: 24px;
        gap: 20px;
    }
    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    .stat-item:nth-child(2) {
        border-right: none;
    }
    .stat-item:nth-child(1),
    .stat-item:nth-child(2) {
        border-bottom: 1px solid rgba(255,255,255,0.08);
    }
    .workflow-timeline {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px 24px;
    }
    .timeline-line {
        display: none;
    }
    .product-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .product-card.featured {
        grid-column: span 2;
        grid-row: span 1;
    }
    .product-card.featured .product-img {
        height: 300px;
        flex: none;
        min-height: 0;
    }
    .cases-showcase {
        grid-template-columns: repeat(2, 1fr);
    }
    .case-item.large {
        grid-row: span 1;
    }
    .news-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .news-card.featured {
        grid-column: span 2;
        grid-row: span 1;
    }
    .news-card.featured .news-img {
        height: auto;
    }
    /* 2 列下第 6 张卡横跨整行，CTA 卡在末行横跨整行，避免空洞 */
    .news-grid > .news-card:nth-child(6) {
        grid-column: span 2;
    }
    .news-cta-card {
        grid-column: span 2;
    }
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .brand-strip-inner {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .brand-year {
        padding-right: 0;
        border-right: none;
        border-bottom: 1px solid rgba(255,255,255,0.25);
        padding-bottom: 24px;
    }
    .brand-strip-logos {
        justify-content: center;
    }
}

@media (max-width: 640px) {
    .product-detail {
        padding: 80px 0;
    }
    .detail-bg {
        height: 36vh;
        min-height: 240px;
    }
    .detail-bg-note {
        font-size: 12px;
        padding: 8px 14px;
        left: 12px;
        bottom: 12px;
    }
    .hero {
        min-height: 600px;
    }
    .hero-title {
        font-size: 36px;
    }
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
        padding: 16px 0;
    }
    .stat-item {
        padding: 16px 12px;
    }
    .stat-num {
        font-size: 28px;
    }
    .workflow {
        padding: 80px 0;
    }
    .workflow-timeline {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    .value-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    .value-card {
        padding: 28px;
    }
    .product-grid {
        grid-template-columns: 1fr;
    }
    .product-card.featured {
        grid-column: span 1;
        grid-row: span 1;
    }
    .product-card.featured .product-img {
        height: 220px;
        flex: none;
        min-height: 0;
    }
    .cases-showcase {
        grid-template-columns: 1fr;
        grid-auto-rows: 240px;
    }
    .news-grid {
        grid-template-columns: 1fr;
    }
    .news-card.featured {
        grid-column: span 1;
        flex-direction: column;
    }
    .news-card.featured .news-img {
        flex: none;
        width: 100%;
        height: 220px;
        min-height: 0;
    }
    .news-grid > .news-card:nth-child(6) {
        grid-column: span 1;
    }
    .news-cta-card {
        grid-column: span 1;
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 36px;
    }
    .nav-cta {
        display: none;
    }
    .float-contact {
        right: 12px;
        bottom: 12px;
    }
    .float-btn {
        width: 44px;
        height: 44px;
    }
}

/* ========================================
   ABOUT PAGE（关于我们）
   ======================================== */

/* 页头横幅：矮版 hero，复用品牌建筑夜景图 */
.page-hero {
    position: relative;
    min-height: 62vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden;
    /* 底部留白避让固定于底部的 .hero-stats 统计栏 */
    padding: 140px 0 200px;
}

.page-hero-bg {
    position: absolute;
    inset: 0;
    background: url('images/cta-bg.png') center/cover no-repeat;
    transform: scale(1.05);
    animation: heroZoom 20s ease-out infinite alternate;
}

.page-hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(13,13,13,0.55) 0%, rgba(26,26,26,0.78) 100%);
}

.page-hero-content {
    position: relative;
    z-index: 2;
    color: var(--color-white);
    max-width: 820px;
    padding: 0 24px;
}

.page-hero .hero-badge {
    margin-bottom: 24px;
}

.page-hero-title {
    font-size: clamp(36px, 5vw, 56px);
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: 16px;
}

.page-hero-desc {
    font-size: 15px;
    color: rgba(255,255,255,0.85);
    max-width: 580px;
    margin: 0 auto;
    line-height: 1.8;
}

/* 公司介绍：左图右文 */
.about-intro {
    padding: 120px 0;
    background: var(--color-white);
}

.intro-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 72px;
    align-items: center;
}

.intro-img-wrap {
    position: relative;
}

.intro-img {
    width: 100%;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    display: block;
}

.intro-img-badge {
    position: absolute;
    bottom: -26px;
    right: 24px;
    background: var(--color-primary);
    color: var(--color-white);
    padding: 18px 26px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-orange);
    text-align: center;
}

.intro-img-badge .num {
    font-size: 32px;
    font-weight: 900;
    line-height: 1.1;
    display: block;
}

.intro-img-badge .label {
    font-size: 12px;
    opacity: 0.9;
    letter-spacing: 1px;
    margin-top: 4px;
    display: block;
}

.intro-content .section-header {
    text-align: left;
    margin-bottom: 24px;
}

.intro-content .section-desc {
    margin: 0;
}

.intro-text {
    font-size: 15px;
    color: var(--color-gray);
    line-height: 1.9;
    margin-bottom: 16px;
}

.intro-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-top: 32px;
}

.intro-stat {
    background: var(--color-bg);
    border: 1px solid rgba(255,72,0,0.08);
    border-radius: var(--radius-md);
    padding: 20px 16px;
    text-align: center;
    transition: var(--transition);
}

.intro-stat:hover {
    border-color: rgba(255,72,0,0.3);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.intro-stat .num {
    font-size: 26px;
    font-weight: 900;
    color: var(--color-primary);
    display: block;
}

.intro-stat .label {
    font-size: 12px;
    color: var(--color-gray);
    letter-spacing: 1px;
    margin-top: 4px;
    display: block;
}

/* 企业实力：深色区，复用 value-card 视觉 */
.about-values {
    position: relative;
    padding: 120px 0;
    background: var(--color-dark);
    overflow: hidden;
}

.about-values-bg {
    position: absolute;
    inset: 0;
    background: url('images/about-factory-1.jpg') center/cover no-repeat;
    opacity: 0.1;
}

.about-values .section-title {
    color: var(--color-white);
}

.about-values .section-desc {
    color: rgba(255,255,255,0.65);
}

.about-values .value-grid {
    position: relative;
    z-index: 2;
}

/* 数据统计：白卡 4 项 */
.about-counts {
    padding: 100px 0;
    background: var(--color-bg);
}

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

.count-item {
    text-align: center;
    padding: 36px 24px;
    background: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.count-item:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

.count-num {
    font-size: 46px;
    font-weight: 900;
    color: var(--color-primary);
    line-height: 1.1;
}

.count-unit {
    font-size: 16px;
    font-weight: 700;
    color: var(--color-primary);
    margin-left: 2px;
}

.count-item p {
    margin-top: 12px;
    font-size: 13px;
    color: var(--color-gray);
    line-height: 1.7;
}

/* 工厂展示：3 列实景图 */
.about-factory {
    padding: 120px 0;
    background: var(--color-white);
}

.factory-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.factory-grid img {
    width: 100%;
    height: 240px;
    object-fit: cover;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.factory-grid img:hover {
    transform: scale(1.03);
    box-shadow: var(--shadow-lg);
}

/* 企业专利：横向滚动证书墙 */
.about-patent {
    padding: 120px 0;
    background: var(--color-bg);
    overflow: hidden;
}

.patent-scroll {
    display: flex;
    gap: 20px;
    overflow-x: auto;
    padding-bottom: 16px;
    scroll-snap-type: x mandatory;
}

.patent-scroll img {
    height: 340px;
    width: auto;
    flex: 0 0 auto;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    background: var(--color-white);
    scroll-snap-align: start;
}

/* ABOUT PAGE 响应式 */
@media (max-width: 1024px) {
    .intro-grid {
        grid-template-columns: 1fr;
        gap: 56px;
    }
    .intro-img-badge {
        bottom: 24px;
        right: 24px;
    }
    .counts-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .factory-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .patent-scroll img {
        height: 280px;
    }
}

@media (max-width: 640px) {
    .page-hero {
        min-height: 50vh;
        /* 移动端 stats 两行更高，底部留白相应加大 */
        padding: 100px 0 320px;
    }
    .about-intro,
    .about-values,
    .about-counts,
    .about-factory,
    .about-patent {
        padding: 80px 0;
    }
    .intro-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    .counts-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    .factory-grid {
        grid-template-columns: 1fr;
    }
    .factory-grid img {
        height: 200px;
    }
    .patent-scroll img {
        height: 240px;
    }
}

/* ========================================
   PRODUCTS PAGE（产品中心）
   ======================================== */

/* 分类区 */
.product-cat-wrap {
    padding: 100px 0 120px;
    background: var(--color-bg);
}

.product-cat-wrap .product-tabs {
    margin-bottom: 56px;
}

/* 错落画廊网格：12 列 —— 主推 12×2（整行双行高、图左文右）最大篇幅；
   次级 6×1（半宽并排）次之；常规 4×1；竖卡 4×2、宽条 8×1 交错其中，
   dense 自动回填，形成杂志式错落节奏 */
.product-mosaic {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    grid-auto-rows: 205px;
    grid-auto-flow: dense;
    gap: 22px;
}

/* 常规卡：默认占 4 列（宽约 1/3） */
.pm-card {
    grid-column: span 4;
    grid-row: span 1;
}

/* 主推大卡：占满整行 × 3 行高（主视觉，气势更足） */
.pm-card.pm-featured {
    grid-column: 1 / -1;
    grid-row: span 3;
}

/* 次级卡：占 6 列 × 1 行，与另一张并排 */
.pm-card.pm-sub {
    grid-column: span 6;
}

/* 竖卡：占 4 列 × 2 行高（瘦高海报卡） */
.pm-card.pm-tall {
    grid-column: span 4;
    grid-row: span 2;
}

/* 宽条卡：占 8 列 × 1 行（横向横幅卡） */
.pm-card.pm-wide {
    grid-column: span 8;
}

/* 卡片基础（图文分栏海报卡） */
.pm-card {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-lg);
    background: var(--color-white);
    box-shadow: var(--shadow-sm);
    display: flex;
    cursor: pointer;
    /* 覆盖 .fade-in-up 的过渡，避免入场 stagger 延迟影响 hover 反馈 */
    transition: transform 0.55s cubic-bezier(0.22, 0.61, 0.36, 1), box-shadow 0.55s ease;
}

.pm-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 44px rgba(15, 23, 42, 0.16);
}

/* 整卡可点击：透明遮罩链接铺满卡片，由 script.js 动态注入 */
.pm-card-overlay {
    position: absolute;
    inset: 0;
    z-index: 4;
}

/* 图片区 */
.pm-media {
    position: relative;
    overflow: hidden;
}

.pm-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.8s cubic-bezier(0.22, 0.61, 0.36, 1);
}

.pm-card:hover .pm-media img {
    transform: scale(1.08);
}

/* 分类标签：图区左上角胶囊 */
.pm-tag {
    position: absolute;
    top: 14px;
    left: 14px;
    z-index: 3;
    padding: 6px 14px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 1px;
    color: var(--color-primary);
    background: rgba(255,255,255,0.92);
    box-shadow: 0 6px 16px rgba(15,23,42,0.12);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    transition: color 0.3s ease, background 0.3s ease;
}

.pm-card:hover .pm-tag {
    background: var(--color-primary);
    color: #fff;
}

/* ===== 常规卡（4×1 矮卡）：整图海报 + 底部渐变遮罩文字 ===== */
.pm-card:not(.pm-featured):not(.pm-sub):not(.pm-tall):not(.pm-wide) .pm-media {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
}

.pm-card:not(.pm-featured):not(.pm-sub):not(.pm-tall):not(.pm-wide) .pm-body {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    padding: 64px 18px 16px;
    background: linear-gradient(180deg, rgba(15,23,42,0) 0%, rgba(15,23,42,0.55) 55%, rgba(15,23,42,0.9) 100%);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    gap: 4px;
    z-index: 2;
}

.pm-card:not(.pm-featured):not(.pm-sub):not(.pm-tall):not(.pm-wide) .pm-body h3 {
    color: var(--color-white);
    font-size: 16px;
    font-weight: 700;
    line-height: 1.35;
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ===== 竖卡（4×2 高卡）：上图下文分栏 ===== */
.pm-tall {
    flex-direction: column;
    align-items: stretch;
}

.pm-tall .pm-media {
    flex: 1;
}

.pm-tall .pm-body {
    flex: none;
    padding: 18px 20px 20px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 8px;
}

.pm-tall .pm-body h3 {
    color: var(--color-text);
    font-size: 18px;
    font-weight: 700;
    line-height: 1.35;
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ===== 次级卡（6×1）：左图右文分栏 ===== */
.pm-sub {
    flex-direction: row;
    align-items: stretch;
}

.pm-sub .pm-media {
    flex: 0 0 46%;
}

.pm-sub .pm-body {
    flex: 1;
    padding: 22px 26px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 10px;
}

.pm-sub .pm-body h3 {
    color: var(--color-text);
    font-size: 19px;
    font-weight: 700;
    line-height: 1.4;
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ===== 宽条卡（8×1）：左图右文，加大字号 ===== */
.pm-wide {
    flex-direction: row;
    align-items: stretch;
}

.pm-wide .pm-media {
    flex: 0 0 54%;
}

.pm-wide .pm-body {
    flex: 1;
    padding: 26px 30px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 10px;
}

.pm-wide .pm-body h3 {
    color: var(--color-text);
    font-size: 22px;
    font-weight: 800;
    line-height: 1.35;
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* 查看详情：橙色文字 + 箭头 */
.pm-tagline {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    font-weight: 600;
    color: var(--color-primary);
    transition: color 0.3s ease;
}

.pm-tagline::after {
    content: '→';
    transition: transform 0.35s ease;
}

.pm-card:hover .pm-tagline::after {
    transform: translateX(5px);
}

/* 叠底式卡（常规卡）的 tagline 需浅色 */
.pm-card:not(.pm-featured):not(.pm-sub):not(.pm-tall):not(.pm-wide) .pm-tagline {
    color: rgba(255,255,255,0.88);
}

/* ---- 主推大卡（12×3 整行三行高）：左图右文，主视觉 ---- */
.pm-featured {
    flex-direction: row;
    align-items: stretch;
}

.pm-featured .pm-media {
    flex: 0 0 52%;
    width: 52%;
}

.pm-featured .pm-body {
    flex: 1;
    padding: 44px 48px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 14px;
    background: linear-gradient(160deg, var(--color-white) 0%, #faf6f3 100%);
    z-index: 4;
}

.pm-featured .pm-tag {
    position: static;
    align-self: flex-start;
    margin-bottom: 4px;
    padding: 5px 16px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-white);
    font-size: 12px;
    letter-spacing: 2px;
    box-shadow: var(--shadow-orange);
}

.pm-featured h3 {
    font-size: 30px;
    font-weight: 900;
    line-height: 1.3;
    color: var(--color-text);
    margin: 0;
}

.pm-featured .pm-desc {
    font-size: 15px;
    color: var(--color-gray);
    line-height: 1.9;
    margin: 0;
}

.pm-specs {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    margin: 8px 0 10px;
}

.pm-specs li {
    padding: 13px 16px;
    background: rgba(255, 72, 0, 0.05);
    border: 1px solid rgba(255, 72, 0, 0.14);
    border-radius: 12px;
    font-size: 13px;
    color: var(--color-text);
}

.pm-specs li b {
    color: var(--color-primary);
    font-weight: 700;
    margin-right: 4px;
}

.pm-link {
    align-self: flex-start;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 13px 30px;
    margin-top: 8px;
    border-radius: 999px;
    background: var(--color-primary);
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    transition: transform 0.35s ease, box-shadow 0.35s ease, background 0.35s ease;
}

.pm-link:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 10px 24px rgba(255, 72, 0, 0.3);
}

/* 网格底部 CTA 补位卡 */
.pm-cta {
    grid-column: 1 / -1;
    grid-row: span 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
    padding: 0 40px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-white);
    box-shadow: var(--shadow-orange);
    transition: transform 0.55s cubic-bezier(0.22, 0.61, 0.36, 1), box-shadow 0.55s ease;
}

/* 半宽 CTA：与竖卡同排收尾 */
.pm-cta.pm-cta-half {
    grid-column: span 8;
}

.pm-cta:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 40px rgba(255, 72, 0, 0.35);
}

.pm-cta .pm-cta-plus {
    font-size: 36px;
    font-weight: 300;
    line-height: 1;
    width: 66px;
    height: 66px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 2px solid rgba(255,255,255,0.5);
    border-radius: 50%;
    transition: transform 0.5s ease, background 0.5s ease, color 0.5s ease;
}

.pm-cta:hover .pm-cta-plus {
    background: #fff;
    color: var(--color-primary);
    transform: rotate(90deg);
}

.pm-cta h4 {
    font-size: 22px;
    font-weight: 700;
}

.pm-cta p {
    font-size: 13px;
    opacity: 0.9;
    margin-top: 4px;
}

/* PRODUCTS PAGE 响应式 */
@media (max-width: 1024px) {
    /* 6 列体系：保留竖卡/宽条的错落节奏 */
    .product-mosaic {
        grid-template-columns: repeat(6, 1fr);
        grid-auto-rows: 205px;
    }
    .pm-card {
        grid-column: span 2;
    }
    .pm-card.pm-sub {
        grid-column: span 3;
    }
    .pm-card.pm-tall {
        grid-column: span 2;
        grid-row: span 2;
    }
    .pm-card.pm-wide {
        grid-column: span 4;
    }
    .pm-card.pm-featured {
        grid-column: 1 / -1;
        grid-row: span 3;
    }
    .pm-cta.pm-cta-half {
        grid-column: span 4;
    }

    /* 窄屏下竖卡/次级/宽条统一转为整图海报式 */
    .pm-card.pm-sub .pm-media,
    .pm-card.pm-tall .pm-media,
    .pm-card.pm-wide .pm-media {
        position: absolute;
        inset: 0;
        width: 100%;
        height: 100%;
    }
    .pm-card.pm-sub .pm-body,
    .pm-card.pm-tall .pm-body,
    .pm-card.pm-wide .pm-body {
        position: absolute;
        left: 0;
        right: 0;
        bottom: 0;
        padding: 56px 18px 18px;
        background: linear-gradient(180deg, rgba(15,23,42,0) 0%, rgba(15,23,42,0.55) 55%, rgba(15,23,42,0.9) 100%);
        display: flex;
        flex-direction: column;
        justify-content: flex-end;
        gap: 4px;
        z-index: 2;
    }
    .pm-card.pm-sub .pm-body h3,
    .pm-card.pm-tall .pm-body h3,
    .pm-card.pm-wide .pm-body h3 {
        color: var(--color-white);
        font-size: 16px;
    }
    .pm-card.pm-sub .pm-tagline,
    .pm-card.pm-tall .pm-tagline,
    .pm-card.pm-wide .pm-tagline {
        color: rgba(255,255,255,0.88);
    }
    .pm-tag {
        top: 10px;
        left: 10px;
        padding: 4px 10px;
        font-size: 11px;
    }
}

@media (max-width: 640px) {
    .product-cat-wrap {
        padding: 80px 0;
    }
    /* 单列纵向画廊 */
    .product-mosaic {
        grid-template-columns: 1fr;
        grid-auto-rows: auto;
        gap: 18px;
    }
    .pm-card,
    .pm-card.pm-featured,
    .pm-card.pm-sub,
    .pm-card.pm-tall,
    .pm-card.pm-wide,
    .pm-cta,
    .pm-cta.pm-cta-half {
        grid-column: 1 / -1;
        grid-row: auto;
    }
    /* 小卡统一海报式，固定高度防塌陷 */
    .pm-card:not(.pm-featured) {
        height: 280px;
    }
    .pm-card:not(.pm-featured) .pm-media {
        position: absolute;
        inset: 0;
        width: 100%;
        height: 100%;
    }
    .pm-card:not(.pm-featured) .pm-body {
        position: absolute;
        left: 0;
        right: 0;
        bottom: 0;
        padding: 56px 18px 16px;
        background: linear-gradient(180deg, rgba(15,23,42,0) 0%, rgba(15,23,42,0.55) 55%, rgba(15,23,42,0.9) 100%);
        display: flex;
        flex-direction: column;
        justify-content: flex-end;
        gap: 4px;
        z-index: 2;
    }
    .pm-card:not(.pm-featured) .pm-body h3 {
        color: var(--color-white);
        font-size: 18px;
    }
    .pm-card:not(.pm-featured) .pm-tagline {
        color: rgba(255,255,255,0.88);
    }

    .pm-featured {
        flex-direction: column;
    }
    .pm-featured .pm-media {
        flex: none;
        width: 100%;
        height: 230px;
    }
    .pm-featured .pm-body {
        padding: 24px 22px 28px;
        gap: 12px;
    }
    .pm-featured h3 {
        font-size: 22px;
    }
    .pm-featured .pm-desc {
        font-size: 13px;
    }
    .pm-specs {
        grid-template-columns: 1fr 1fr;
        gap: 8px;
    }
    .pm-specs li {
        padding: 10px 12px;
        font-size: 12px;
    }
    .pm-link {
        padding: 11px 24px;
        font-size: 13px;
    }
    .pm-cta {
        flex-direction: column;
        padding: 30px 20px;
        text-align: center;
        gap: 12px;
    }
}

/* ========================================
   CASES / NEWS / CONTACT 独立页面
   ======================================== */
.cases-page {
    padding: 100px 0 120px;
}
.cases-page .cases-showcase {
    margin-top: 56px;
    max-width: 1280px;
    margin-left: auto;
    margin-right: auto;
    padding: 0 24px;
}
.cases-page .case-item {
    display: block;
    text-decoration: none;
}
.cases-page .case-overlay h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 6px;
}
.cases-page .case-overlay p {
    font-size: 13px;
    opacity: 0.85;
}
.cases-page .case-item .case-img {
    transition: transform 0.6s ease;
}
.cases-page .case-item:hover .case-img {
    transform: scale(1.06);
}

/* ========== NEWS PAGE ========== */
.news-page {
    padding: 100px 0 40px;
}
.news-archive {
    padding: 60px 0 110px;
    background: var(--color-bg);
}
.news-archive .news-list {
    margin-top: 48px;
}
.news-list {
    max-width: 960px;
    margin: 0 auto;
    list-style: none;
}
.news-list li {
    display: flex;
    align-items: center;
    gap: 24px;
    padding: 18px 24px;
    background: var(--color-white);
    border: 1px solid var(--color-gray-light);
    border-radius: var(--radius);
    margin-bottom: 12px;
    transition: var(--transition);
}
.news-list li:hover {
    border-color: rgba(255,72,0,0.3);
    box-shadow: var(--shadow-md);
    transform: translateX(4px);
}
.news-list time {
    flex: none;
    width: 96px;
    font-size: 13px;
    color: var(--color-gray);
    border-right: 1px solid var(--color-gray-light);
    padding-right: 24px;
}
.news-list a {
    flex: 1;
    color: var(--color-dark);
    font-size: 15px;
    font-weight: 500;
    text-decoration: none;
    transition: var(--transition);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.news-list a:hover {
    color: var(--color-primary);
}
.news-arrow {
    flex: none;
    color: var(--color-primary);
    font-size: 16px;
}
/* 全部新闻分页 */
.news-pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 40px;
}
.news-pagination button {
    min-width: 40px;
    height: 40px;
    padding: 0 14px;
    border: 1px solid var(--color-gray-light);
    background: var(--color-white);
    color: var(--color-dark);
    font-size: 14px;
    font-weight: 500;
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition);
}
.news-pagination button:hover:not(:disabled):not(.active) {
    border-color: var(--color-primary);
    color: var(--color-primary);
}
.news-pagination button.active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-white);
    box-shadow: var(--shadow-orange);
}
.news-pagination button:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* ========== CONTACT PAGE ========== */
.contact-page {
    padding: 100px 0 60px;
}
.contact-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
    margin-top: 56px;
}
.contact-card {
    background: var(--color-white);
    border: 1px solid var(--color-gray-light);
    border-radius: var(--radius-lg);
    padding: 40px 28px;
    text-align: center;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}
.contact-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-orange-lg);
    border-color: rgba(255,72,0,0.25);
}
.contact-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    color: var(--color-white);
    box-shadow: var(--shadow-orange);
}
.contact-card h3 {
    font-size: 19px;
    font-weight: 700;
    margin-bottom: 12px;
}
.contact-card p {
    font-size: 14px;
    color: var(--color-gray);
    line-height: 1.7;
}
.contact-tel {
    font-size: 16px;
    color: var(--color-dark);
    font-weight: 500;
}
.contact-tel a {
    color: var(--color-dark);
    text-decoration: none;
    transition: var(--transition);
}
.contact-tel a:hover {
    color: var(--color-primary);
}
.contact-sub {
    margin-top: 4px;
}
.contact-map-link {
    display: inline-block;
    margin-top: 12px;
    color: var(--color-primary);
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
}
.contact-map-link:hover {
    color: var(--color-primary-light);
}

.contact-lower {
    padding: 60px 0 110px;
}
.contact-map-card {
    display: grid;
    grid-template-columns: 5fr 7fr;
    background: var(--color-white);
    border: 1px solid var(--color-gray-light);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}
.contact-map-info {
    padding: 48px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}
.contact-map-info h3 {
    font-size: 26px;
    font-weight: 700;
    margin: 14px 0 20px;
}
.contact-map-info p {
    font-size: 15px;
    color: var(--color-gray);
    line-height: 1.9;
    margin-bottom: 6px;
}
.contact-map-actions {
    display: flex;
    gap: 14px;
    margin-top: 24px;
    flex-wrap: wrap;
}
.contact-map-embed {
    min-height: 380px;
}
.contact-map-embed iframe {
    width: 100%;
    height: 100%;
    border: 0;
    display: block;
    min-height: 380px;
}
.contact-follow {
    margin-top: 80px;
    text-align: center;
}
.contact-follow .section-header {
    margin-bottom: 40px;
}
.qr-grid {
    display: flex;
    justify-content: center;
    gap: 48px;
    flex-wrap: wrap;
}
.qr-grid figure {
    background: var(--color-white);
    border: 1px solid var(--color-gray-light);
    border-radius: var(--radius-lg);
    padding: 24px 24px 18px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}
.qr-grid figure:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
}
.qr-grid img {
    width: 150px;
    height: 150px;
    object-fit: contain;
    display: block;
}
.qr-grid figcaption {
    margin-top: 12px;
    font-size: 14px;
    color: var(--color-gray);
    font-weight: 500;
}

/* CASES / NEWS / CONTACT 响应式 */
@media (max-width: 1024px) {
    .contact-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .contact-map-card {
        grid-template-columns: 1fr;
    }
    .contact-map-embed {
        min-height: 300px;
    }
    .contact-map-embed iframe {
        min-height: 300px;
    }
}
@media (max-width: 640px) {
    .cases-page,
    .news-page,
    .contact-page {
        padding-top: 70px;
    }
    .contact-grid {
        grid-template-columns: 1fr;
    }
    .contact-map-info {
        padding: 32px 24px;
    }
    .contact-map-embed {
        min-height: 260px;
    }
    .contact-map-embed iframe {
        min-height: 260px;
    }
    .qr-grid {
        gap: 24px;
    }
    .news-list li {
        flex-wrap: wrap;
        gap: 10px;
        padding: 16px;
    }
    .news-list time {
        width: auto;
        border-right: none;
        padding-right: 0;
    }
    .news-list a {
        white-space: normal;
    }
}

/* ========================================
   DETAIL PAGES - 产品/新闻详情
   ======================================== */
.detail-hero {
    background: linear-gradient(135deg, var(--color-dark) 0%, #232323 100%);
    padding: 130px 0 48px;
    position: relative;
    overflow: hidden;
}
.detail-hero::before {
    content: '';
    position: absolute;
    right: -80px;
    top: -80px;
    width: 320px;
    height: 320px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255,72,0,0.18) 0%, transparent 70%);
    pointer-events: none;
}
.breadcrumb {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 13px;
    color: rgba(255,255,255,0.55);
    margin-bottom: 18px;
}
.breadcrumb a {
    color: rgba(255,255,255,0.75);
    transition: var(--transition);
}
.breadcrumb a:hover {
    color: var(--color-accent-light);
}
.bc-sep {
    color: rgba(255,255,255,0.3);
}
.bc-current {
    color: var(--color-accent-light);
    max-width: 420px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.detail-hero-title {
    font-size: 30px;
    font-weight: 700;
    color: var(--color-white);
    letter-spacing: 1px;
    max-width: 900px;
    line-height: 1.4;
}

/* ---- 产品详情主体 ---- */
.pd-main {
    padding: 60px 0;
    background: var(--color-bg);
}
.pd-layout {
    display: grid;
    grid-template-columns: 1.15fr 1fr;
    gap: 48px;
    align-items: start;
}
.pd-gallery {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    background: var(--color-dark);
    aspect-ratio: 4 / 5;
    cursor: zoom-in;
}
.pd-gallery img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}
.pd-gallery:hover img {
    transform: scale(1.03);
}
.pd-zoom-hint {
    position: absolute;
    right: 16px;
    bottom: 16px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    border-radius: 50px;
    background: rgba(0,0,0,0.55);
    color: var(--color-white);
    font-size: 12px;
    backdrop-filter: blur(4px);
    pointer-events: none;
}
.pd-info {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: 36px;
    box-shadow: var(--shadow-md);
}
.pd-tag {
    display: inline-block;
    padding: 6px 14px;
    border-radius: 50px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: var(--color-white);
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 2px;
    margin-bottom: 16px;
}
.pd-info h2 {
    font-size: 28px;
    font-weight: 700;
    line-height: 1.4;
    margin-bottom: 16px;
}
.pd-desc {
    color: var(--color-gray);
    font-size: 15px;
    line-height: 1.9;
    margin-bottom: 24px;
}
.pd-specs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 28px;
}
.pd-spec {
    display: flex;
    align-items: baseline;
    gap: 8px;
    padding: 12px 16px;
    border-radius: var(--radius);
    background: var(--color-bg);
    font-size: 14px;
}
.pd-spec-key {
    flex: none;
    font-weight: 700;
    color: var(--color-primary);
}
.pd-spec-val {
    color: var(--color-dark);
}
.pd-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-bottom: 24px;
}
.pd-services {
    display: flex;
    flex-wrap: wrap;
    gap: 10px 20px;
    padding-top: 20px;
    border-top: 1px dashed var(--color-gray-light);
}
.pd-services li {
    position: relative;
    padding-left: 18px;
    font-size: 13px;
    color: var(--color-gray);
}
.pd-services li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-weight: 700;
}

/* ---- 相关推荐 ---- */
.pd-related {
    padding: 60px 0 80px;
    background: var(--color-white);
}
.related-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 22px;
}
.related-card {
    display: block;
    border-radius: var(--radius);
    overflow: hidden;
    background: var(--color-white);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-gray-light);
    transition: var(--transition);
}
.related-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}
.related-img {
    aspect-ratio: 4 / 3;
    overflow: hidden;
    background: var(--color-bg);
}
.related-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}
.related-card:hover .related-img img {
    transform: scale(1.08);
}
.related-body {
    padding: 18px 20px 20px;
}
.related-tag {
    display: inline-block;
    font-size: 11px;
    color: var(--color-primary);
    font-weight: 500;
    letter-spacing: 1px;
    margin-bottom: 8px;
}
.related-body h3 {
    font-size: 16px;
    font-weight: 600;
    line-height: 1.5;
    margin-bottom: 12px;
}
.related-more {
    font-size: 13px;
    color: var(--color-gray);
    transition: var(--transition);
}
.related-card:hover .related-more {
    color: var(--color-primary);
}

/* ---- 新闻详情 ---- */
.nd-main {
    padding: 60px 0 80px;
    background: var(--color-bg);
}
.nd-wrap {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 340px;
    gap: 40px;
    align-items: start;
}
.nd-article {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: 44px;
    box-shadow: var(--shadow-md);
}
.nd-title {
    font-size: 26px;
    font-weight: 700;
    line-height: 1.5;
    margin-bottom: 18px;
}
.nd-meta {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
    padding-bottom: 22px;
    margin-bottom: 26px;
    border-bottom: 1px solid var(--color-gray-light);
    font-size: 13px;
    color: var(--color-gray);
}
.nd-meta time {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--color-primary);
    font-weight: 500;
}
.nd-cover {
    border-radius: var(--radius);
    overflow: hidden;
    margin-bottom: 28px;
    aspect-ratio: 16 / 7;
    background: var(--color-bg);
}
.nd-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.nd-body p {
    font-size: 15.5px;
    line-height: 2;
    color: #3A3A3A;
    margin-bottom: 20px;
    text-align: justify;
}
.nd-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    padding-top: 28px;
    margin-top: 12px;
    border-top: 1px solid var(--color-gray-light);
}
.nd-more {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: 28px;
    box-shadow: var(--shadow-md);
}
.nd-more h3 {
    font-size: 18px;
    font-weight: 700;
    padding-bottom: 16px;
    margin-bottom: 8px;
    border-bottom: 2px solid var(--color-dark);
    position: relative;
}
.nd-more h3::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -2px;
    width: 56px;
    height: 2px;
    background: var(--color-primary);
}
.nd-more ul li {
    border-bottom: 1px dashed var(--color-gray-light);
}
.nd-more ul li:last-child {
    border-bottom: none;
}
.nd-more ul a {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 14px 0;
    transition: var(--transition);
}
.nd-more ul a:hover {
    padding-left: 8px;
}
.nd-more ul time {
    font-size: 12px;
    color: var(--color-primary);
}
.nd-more-title {
    font-size: 14px;
    line-height: 1.6;
    color: var(--color-dark);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.nd-more ul a:hover .nd-more-title {
    color: var(--color-primary);
}

/* ---- 灯箱 ---- */
.lightbox {
    position: fixed;
    inset: 0;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0,0,0,0.88);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}
.lightbox.show {
    opacity: 1;
    visibility: visible;
}
.lightbox img {
    max-width: 90vw;
    max-height: 86vh;
    border-radius: var(--radius);
    box-shadow: var(--shadow-xl);
}
.lightbox-close {
    position: absolute;
    top: 24px;
    right: 28px;
    width: 48px;
    height: 48px;
    border: none;
    border-radius: 50%;
    background: rgba(255,255,255,0.12);
    color: var(--color-white);
    font-size: 30px;
    line-height: 1;
    cursor: pointer;
    transition: var(--transition);
}
.lightbox-close:hover {
    background: var(--color-primary);
    transform: rotate(90deg);
}

/* ---- 详情页响应式 ---- */
@media (max-width: 1024px) {
    .pd-layout {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    .pd-gallery {
        aspect-ratio: 16 / 10;
        max-height: 520px;
    }
    .pd-info {
        padding: 28px;
    }
    .related-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .nd-wrap {
        grid-template-columns: 1fr;
    }
    .nd-more ul {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 0 24px;
    }
}
@media (max-width: 640px) {
    .detail-hero {
        padding: 120px 0 32px;
    }
    .detail-hero-title {
        font-size: 22px;
    }
    .pd-main,
    .pd-related,
    .nd-main {
        padding: 40px 0;
    }
    .pd-specs {
        grid-template-columns: 1fr;
    }
    .related-grid {
        grid-template-columns: 1fr;
    }
    .nd-article {
        padding: 24px 20px;
    }
    .nd-title {
        font-size: 21px;
    }
    .nd-cover {
        aspect-ratio: 4 / 3;
    }
    .nd-more ul {
        display: block;
    }
    .lightbox-close {
        top: 16px;
        right: 16px;
    }
}

/* ========== PRODUCT DETAIL EXTRA（性能等级 / 工艺亮点） ========== */
.pd-extra {
    margin-top: 48px;
    display: grid;
    gap: 28px;
}
.pd-block {
    background: #fff;
    border: 1px solid var(--color-border, #eee);
    border-radius: 14px;
    padding: 28px 32px;
}
.pd-block-title {
    font-size: 20px;
    font-weight: 700;
    margin: 0 0 22px;
    padding-left: 14px;
    position: relative;
}
.pd-block-title::before {
    content: '';
    position: absolute;
    left: 0;
    top: 4px;
    bottom: 4px;
    width: 4px;
    border-radius: 2px;
    background: var(--color-primary);
}
.pd-perf {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 16px;
}
.pd-perf-item {
    background: #faf8f6;
    border: 1px solid #f0ece8;
    border-radius: 10px;
    padding: 18px 12px;
    text-align: center;
    transition: transform .25s ease, box-shadow .25s ease;
}
.pd-perf-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, .06);
}
.pd-perf-val {
    display: block;
    font-size: 28px;
    font-weight: 900;
    color: var(--color-primary);
    line-height: 1.2;
    margin-bottom: 6px;
}
.pd-perf-key {
    font-size: 13px;
    color: var(--color-gray, #888);
}
.pd-crafts {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}
.pd-craft {
    padding: 10px 18px;
    border-radius: 999px;
    background: #faf8f6;
    border: 1px solid #f0ece8;
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text, #333);
}
.pd-craft::before {
    content: '✓ ';
    color: var(--color-primary);
    font-weight: 700;
}
@media (max-width: 1024px) {
    .pd-perf {
        grid-template-columns: repeat(3, 1fr);
    }
}
@media (max-width: 640px) {
    .pd-perf {
        grid-template-columns: repeat(2, 1fr);
    }
    .pd-block {
        padding: 22px 20px;
    }
}

/* 规格卡片跨双列 + 咨询按钮拉宽 */
.pd-spec-wide {
    grid-column: 1 / -1;
}
.pd-actions .btn-consult {
    flex: 1;
    padding: 14px 24px;
    font-size: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

/* 修复全部新闻列表箭头居右 */
.news-list li {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.news-list a {
    flex: 1;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.news-arrow {
    flex: none;
    margin-left: auto;
    color: var(--color-primary);
    font-size: 16px;
}