/* ========================================================================== 
   COLORCOAT INDUSTRIAL COATINGS - LARGE INDUSTRIAL B2B HOMEPAGE
   ========================================================================== */

:root {
    --color-primary: #001a3a;
    --color-primary-2: #06264f;
    --color-primary-3: #0a356f;
    --color-accent: #0b4edb;
    --color-accent-hover: #083ca8;
    --color-text-dark: #071833;
    --color-text-main: #17243a;
    --color-text-muted: #64748b;
    --color-bg-light: #f3f6fa;
    --color-bg-panel: #f7f9fc;
    --color-bg-dark: #001126;
    --color-border: #dbe3ef;
    --color-border-strong: #c7d2e3;
    --font-family: 'Inter', sans-serif;
    --container: 100%;
    --shadow-sm: 0 6px 18px rgba(0, 26, 58, 0.06);
    --shadow-md: 0 14px 34px rgba(0, 26, 58, 0.10);
    --shadow-lg: 0 24px 56px rgba(0, 26, 58, 0.16);
    --transition-smooth: all 0.28s cubic-bezier(0.23, 1, 0.32, 1);
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 12px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    color: var(--color-text-dark);
    background: #ffffff;
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

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

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

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

.container {
    width: 100%;
    max-width: 100%;
    margin: 0 auto;
    padding-left: clamp(20px, 4vw, 80px);
    padding-right: clamp(20px, 4vw, 80px);
}

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

.w-full {
    width: 100%;
}

/* ========================================================================== 
   BUTTONS AND SHARED SECTION SYSTEM
   ========================================================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    min-height: 52px;
    padding: 0 32px;
    border-radius: 4px;
    font-size: 15px;
    font-weight: 800;
    letter-spacing: 0.01em;
    line-height: 1;
    transition: var(--transition-smooth);
    white-space: nowrap;
}

.btn i {
    font-size: 13px;
    transition: transform 0.25s ease;
}

.btn:hover i {
    transform: translateX(4px);
}

.btn:active {
    transform: translateY(1px);
}

.btn-primary {
    color: #ffffff;
    background: var(--color-primary);
    box-shadow: 0 10px 24px rgba(0, 26, 58, 0.16);
}

.btn-primary:hover {
    background: var(--color-primary-2);
    box-shadow: 0 14px 32px rgba(0, 26, 58, 0.22);
}

.btn-accent {
    color: #ffffff;
    background: var(--color-accent);
    box-shadow: 0 12px 28px rgba(11, 78, 219, 0.22);
}

.btn-accent:hover {
    background: var(--color-accent-hover);
    box-shadow: 0 16px 36px rgba(11, 78, 219, 0.28);
}

.btn-outline {
    color: #ffffff;
    border: 1px solid rgba(255, 255, 255, 0.44);
    background: rgba(0, 20, 44, 0.22);
    backdrop-filter: blur(3px);
}

.btn-outline:hover {
    border-color: rgba(255, 255, 255, 0.74);
    background: rgba(255, 255, 255, 0.10);
}

.products,
.applications,
.about,
.news {
    padding: 90px 0;
}

.products,
.news {
    background: #ffffff;
}

.applications,
.about {
    background: var(--color-bg-light);
}

.section-header {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 28px;
    margin-bottom: 44px;
}

.section-title,
.about-title {
    position: relative;
    color: var(--color-primary);
    font-size: 42px;
    font-weight: 900;
    line-height: 1.08;
    letter-spacing: -0.035em;
}

.section-title::after,
.about-title::after {
    content: '';
    display: block;
    width: 72px;
    height: 4px;
    margin-top: 18px;
    background: var(--color-accent);
}

.section-link {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--color-primary);
    font-size: 15px;
    font-weight: 800;
    letter-spacing: 0.01em;
    transition: var(--transition-smooth);
}

.section-link i {
    color: var(--color-accent);
    transition: transform 0.25s ease;
}

.section-link:hover {
    color: var(--color-accent);
}

.section-link:hover i {
    transform: translateX(6px);
}

/* ========================================================================== 
   TOP BAR AND NAVIGATION
   (extracted to /assets/css/header.css)
   ========================================================================== */
@import url('/assets/css/header.css');

/* ========================================================================== 
   HERO
   ========================================================================== */

.hero {
    position: relative;
    min-height: clamp(680px, 60vw, 960px);
    display: flex;
    align-items: stretch;
    overflow: hidden;
    color: #ffffff;
    background: var(--color-primary);
}


.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    z-index: 1;
    pointer-events: none;
    background: linear-gradient(
        90deg,
        rgba(0, 13, 32, 0.76) 0%,
        rgba(0, 20, 48, 0.58) 28%,
        rgba(0, 26, 58, 0.28) 48%,
        rgba(0, 26, 58, 0.08) 68%,
        rgba(0, 26, 58, 0.00) 100%
    );
}

.hero::after {
    content: '';
    position: absolute;
    inset: auto 0 0 0;
    z-index: 2;
    height: 32%;
    pointer-events: none;
    background: linear-gradient(
        0deg,
        rgba(0, 10, 24, 0.28),
        rgba(0, 10, 24, 0)
    );
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
    background:
        linear-gradient(90deg, #3a4a5a 0%, #4a5a6a 42%, #5a6a7a 100%),
        repeating-linear-gradient(90deg, rgba(255,255,255,.04) 0 1px, transparent 1px 84px);
}

.hero-bg::before {
    content: '';
    position: absolute;
    inset: 0 0 0 46%;
    background:
        radial-gradient(circle at 74% 28%, rgba(255, 255, 255, 0.12), transparent 22%),
        linear-gradient(135deg, rgba(255,255,255,.06), transparent 42%);
    opacity: 0.75;
}

.hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center right;
    opacity: 1;
    filter: none;
}

.hero .container {
    position: relative;
    z-index: 3;
    display: flex;
    align-items: center;
}

.hero-content {
    width: min(100%, clamp(580px, 42vw, 860px));
    padding: clamp(60px, 5.5vw, 110px) 0 clamp(70px, 6vw, 120px);
    padding-left: clamp(48px, 5vw, 120px);
}

.hero-title {
    margin-bottom: clamp(20px, 1.8vw, 36px);
    color: #ffffff;
    font-size: clamp(48px, 4.2vw, 80px);
    font-weight: 800;
    line-height: 1.08;
    letter-spacing: -0.045em;
    text-shadow: 0 10px 32px rgba(0, 0, 0, 0.24);
}

.hero-desc {
    max-width: clamp(520px, 36vw, 780px);
    margin-bottom: clamp(28px, 2.4vw, 50px);
    color: rgba(255, 255, 255, 0.90);
    font-size: clamp(17px, 1.3vw, 24px);
    line-height: 1.7;
    font-weight: 500;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: clamp(14px, 1.2vw, 24px);
}

.hero-actions .btn {
    min-height: clamp(50px, 3.4vw, 68px);
    padding: 0 clamp(28px, 2.4vw, 52px);
    font-size: clamp(15px, 1vw, 19px);
}

/* ========================================================================== 
   BENEFITS BAR
   ========================================================================== */

.benefits {
    position: relative;
    z-index: 5;
    padding: 28px 0;
    background: #001126;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: 26px;
}

.benefit-item {
    display: flex;
    align-items: center;
    gap: 15px;
    min-height: 78px;
    padding: 16px 12px;
    border-left: 1px solid rgba(255, 255, 255, 0.10);
}

.benefit-icon {
    flex: 0 0 48px;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    border: 1px solid rgba(255, 255, 255, 0.32);
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.05);
}

.benefit-icon i {
    font-size: 21px;
}

.benefit-text h4 {
    color: #ffffff;
    font-size: 15px;
    font-weight: 800;
    line-height: 1.32;
}

.benefit-text p {
    margin-top: 4px;
    color: rgba(255, 255, 255, 0.70);
    font-size: 14px;
    line-height: 1.35;
}

/* ========================================================================== 
   PRODUCTS
   ========================================================================== */

.products {
    position: relative;
    padding: 96px 0 106px;
    background:
        linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
}

.products::before {
    content: '';
    position: absolute;
    inset: 0;
    pointer-events: none;
    background:
        radial-gradient(circle at 10% 10%, rgba(11, 78, 219, 0.045), transparent 28%),
        linear-gradient(90deg, rgba(0, 26, 58, 0.025) 0 1px, transparent 1px 100%);
    background-size: auto, 72px 72px;
    opacity: 0.72;
}

.products .container {
    position: relative;
    z-index: 1;
}

.products-header {
    align-items: flex-start;
    margin-bottom: 46px;
}

.products-heading {
    max-width: 860px;
}

.products-subtitle {
    margin-top: 24px;
    color: var(--color-primary);
    font-size: 20px;
    font-weight: 800;
    line-height: 1.35;
    letter-spacing: -0.015em;
}

.products-intro {
    max-width: 790px;
    margin-top: 10px;
    color: #46566e;
    font-size: 16px;
    line-height: 1.72;
    font-weight: 500;
}

.product-center-layout {
    display: grid;
    grid-template-columns: minmax(0, 2fr) minmax(320px, 0.92fr);
    gap: 42px;
    align-items: start;
}

.product-categories-panel,
.product-brands-panel {
    position: relative;
}

.product-panel-heading {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 18px;
    margin-bottom: 24px;
    padding-bottom: 18px;
    border-bottom: 1px solid var(--color-border);
}

.product-panel-heading h3 {
    color: var(--color-primary);
    font-size: 25px;
    font-weight: 900;
    line-height: 1.18;
    letter-spacing: -0.028em;
}

.product-panel-kicker {
    color: var(--color-accent);
    font-size: 14px;
    font-weight: 900;
    letter-spacing: 0.13em;
    text-transform: uppercase;
    white-space: nowrap;
}

.product-brands-heading {
    margin-bottom: 22px;
}

.product-category-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
}

.product-category-card {
    position: relative;
    min-height: 356px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    border: 1px solid var(--color-border);
    border-radius: 14px;
    background: #ffffff;
    box-shadow: 0 10px 26px rgba(0, 26, 58, 0.055);
    transition: var(--transition-smooth);
}

.product-category-card::before {
    content: '';
    position: absolute;
    inset: 0;
    pointer-events: none;
    border-radius: inherit;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.88);
}

.product-category-card:hover {
    transform: translateY(-6px);
    border-color: rgba(11, 78, 219, 0.28);
    box-shadow: 0 20px 44px rgba(0, 26, 58, 0.12);
}

.product-category-image {
    position: relative;
    height: 172px;
    overflow: hidden;
    background:
        linear-gradient(135deg, rgba(0, 26, 58, 0.88) 0%, rgba(6, 38, 79, 0.72) 44%, rgba(219, 227, 239, 0.62) 100%),
        linear-gradient(180deg, #eef3f8 0%, #dbe3ef 100%);
}

.product-category-image::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 18% 20%, rgba(255,255,255,0.20), transparent 18%),
        repeating-linear-gradient(90deg, rgba(255,255,255,0.075) 0 1px, transparent 1px 46px);
    opacity: 0.72;
}

.product-category-image::after {
    content: '';
    position: absolute;
    right: -42px;
    bottom: -52px;
    width: 140px;
    height: 140px;
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: 50%;
    background: rgba(255,255,255,0.055);
}

.product-category-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.45s ease;
}

.product-category-card:hover .product-category-image img {
    transform: scale(1.045);
}

.product-category-body {
    position: relative;
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 184px;
    padding: 23px 24px 24px;
}

.product-category-body h4 {
    margin-bottom: 10px;
    color: var(--color-primary);
    font-size: 20px;
    font-weight: 900;
    line-height: 1.22;
    letter-spacing: -0.02em;
}

.product-category-body p {
    padding-right: 10px;
    color: #526178;
    font-size: 14.5px;
    line-height: 1.62;
    font-weight: 500;
}

.product-category-arrow {
    position: absolute;
    right: 22px;
    bottom: 20px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    color: var(--color-primary);
    border: 1px solid var(--color-border);
    border-radius: 50%;
    background: #ffffff;
    transition: var(--transition-smooth);
}

.product-category-arrow i {
    font-size: 12px;
}

.product-category-card:hover .product-category-arrow {
    color: #ffffff;
    border-color: var(--color-accent);
    background: var(--color-accent);
    transform: translateX(3px);
}

.product-brands-panel {
    padding: 30px;
    border: 1px solid var(--color-border);
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.78);
    box-shadow: 0 12px 34px rgba(0, 26, 58, 0.065);
}

.brand-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}

.brand-card {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 96px;
    padding: 16px 12px;
    border: 1px solid var(--color-border);
    border-radius: 12px;
    background: #ffffff;
    box-shadow: 0 8px 20px rgba(0, 26, 58, 0.045);
    transition: var(--transition-smooth);
}

.brand-card span {
    color: var(--color-primary);
    font-size: 20px;
    font-weight: 900;
    line-height: 1;
    letter-spacing: -0.025em;
    opacity: 0.9;
}

.brand-card:hover {
    transform: translateY(-4px);
    border-color: rgba(11, 78, 219, 0.22);
    box-shadow: 0 14px 30px rgba(0, 26, 58, 0.095);
}

.brand-card:hover span {
    color: var(--color-accent);
}

.brands-link {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin-top: 24px;
    color: var(--color-primary);
    font-size: 15px;
    font-weight: 900;
    transition: var(--transition-smooth);
}

.brands-link i {
    color: var(--color-accent);
    font-size: 13px;
    transition: transform 0.25s ease;
}

.brands-link:hover {
    color: var(--color-accent);
}

.brands-link:hover i {
    transform: translateX(6px);
}

/* ========================================================================== 
   APPLICATIONS
   ========================================================================== */

.applications {
    padding: 100px 0;
    background: #f1f5f9;
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.applications-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 28px;
}

.app-card {
    position: relative;
    height: 360px;
    overflow: hidden;
    border-radius: 0;
    background: var(--color-primary);
    box-shadow: var(--shadow-md);
    transition: var(--transition-smooth);
    text-decoration: none;
    display: block;
    color: inherit;
}

.app-card::before {
    content: '';
    position: absolute;
    inset: 0;
    z-index: 0;
    background:
        linear-gradient(135deg, rgba(255,255,255,.10), transparent 34%),
        repeating-linear-gradient(90deg, rgba(255,255,255,.035) 0 1px, transparent 1px 54px);
    opacity: 0.7;
}

.app-bg {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.45s ease;
    filter: brightness(1);
}

.app-overlay {
    position: absolute;
    inset: 0;
    z-index: 1;
    background: linear-gradient(180deg, rgba(0, 26, 58, 0.02) 0%, rgba(0, 26, 58, 0.22) 36%, rgba(0, 17, 38, 0.48) 100%);
    transition: opacity 0.35s ease;
}

.app-content {
    position: relative;
    z-index: 2;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 34px;
}

.app-icon {
    width: 54px;
    height: 54px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    color: #ffffff;
    border: 1px solid rgba(255, 255, 255, 0.44);
    background: rgba(255, 255, 255, 0.08);
    font-size: 24px;
}

.app-footer {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 18px;
}

.app-title {
    max-width: 260px;
    color: #ffffff;
    font-size: 24px;
    font-weight: 800;
    line-height: 1.18;
    letter-spacing: -0.02em;
}

.app-arrow {
    flex: 0 0 42px;
    width: 42px;
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    border: 1px solid rgba(255, 255, 255, 0.38);
    background: rgba(255, 255, 255, 0.08);
    transition: var(--transition-smooth);
}

.app-card:hover {
    transform: translateY(-7px);
    box-shadow: 0 30px 70px rgba(0, 26, 58, 0.24);
}

.app-card:hover .app-bg {
    transform: scale(1.06);
}

.app-card:hover .app-arrow {
    background: var(--color-accent);
    border-color: var(--color-accent);
}

.app-card:hover .app-overlay {
    opacity: 0;
}

/* ========================================================================== 
   ABOUT
   ========================================================================== */

.about {
    padding: 100px 0;
    background: #ffffff;
}

.about-grid {
    display: grid;
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.25fr);
    gap: 76px;
    align-items: center;
}

.sub-title {
    display: inline-block;
    margin-bottom: 14px;
    color: var(--color-accent);
    font-size: 13px;
    font-weight: 900;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.about-title {
    margin-bottom: 30px;
}

.about-text {
    margin-bottom: 34px;
    color: #34445c;
    font-size: 17px;
    line-height: 1.82;
}

.about-lead {
    margin-bottom: 18px;
    color: var(--color-text-dark);
    font-size: 19px;
    font-weight: 700;
    line-height: 1.65;
}

/* 修正：stats-grid部分不匀称，如图，此外再加点动画 */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px; /* 增加间距使其呼吸感更好 */
    margin: 40px 0 36px;
    padding: 30px 0 0;
    border-top: 1px solid var(--color-border);
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 16px; /* 增加图标和文字的间距 */
    padding: 12px 16px;
    background: rgba(255, 255, 255, 0.5);
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    transition: all 0.35s cubic-bezier(0.23, 1, 0.32, 1);
}

/* 悬停动画：微抬起，加轻微阴影，亮起边框 */
.stat-item:hover {
    transform: translateY(-4px);
    background: #ffffff;
    border-color: rgba(11, 78, 219, 0.15);
    box-shadow: 0 10px 25px rgba(0, 26, 58, 0.05);
}


.stat-icon {
    flex: 0 0 52px; /* 增大尺寸使其更匀称，原为44px */
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-accent);
    border: 1px solid var(--color-border);
    background: #ffffff;
    border-radius: var(--radius-sm); /* 圆角化 */
    font-size: 22px;
    box-shadow: 0 4px 10px rgba(0, 26, 58, 0.03);
    transition: all 0.35s cubic-bezier(0.23, 1, 0.32, 1);
}

.stat-item:hover .stat-icon {
    background: var(--color-accent);
    color: #ffffff;
    border-color: var(--color-accent);
    transform: scale(1.05) rotate(5deg);
}

.stat-info {
    flex: 1; /* 自动撑满，确保对齐匀称 */
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.stat-value {
    color: var(--color-primary);
    font-size: 32px; /* 适当增大，原为30px */
    font-weight: 900;
    line-height: 1;
    letter-spacing: -0.04em;
    transition: color 0.3s ease;
}

.stat-item:hover .stat-value {
    color: var(--color-accent);
}

.stat-label {
    margin-top: 4px;
    color: #596a80;
    font-size: 13px; /* 增大，原为12px */
    font-weight: 600;
    line-height: 1.3;
}

.about-image {
    position: relative;
    height: 460px;
    overflow: hidden;
    background:
        linear-gradient(135deg, #dce6f2 0%, #f6f8fb 42%, #b9c8dc 100%);
    box-shadow: var(--shadow-lg);
}

.about-image::before {
    content: '';
    position: absolute;
    inset: 0;
    z-index: 0;
    background:
        linear-gradient(0deg, rgba(0, 26, 58, 0.20), transparent 42%),
        repeating-linear-gradient(90deg, rgba(0, 26, 58, 0.04) 0 1px, transparent 1px 58px);
}

.about-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.about-badge {
    position: absolute;
    left: 34px;
    bottom: 34px;
    width: min(420px, calc(100% - 68px));
    padding: 24px;
    color: #ffffff;
    background: rgba(0, 17, 38, 0.88);
    border-left: 4px solid var(--color-accent);
    box-shadow: 0 18px 46px rgba(0, 0, 0, 0.22);
}

.badge-tag {
    display: block;
    margin-bottom: 8px;
    color: #9dbaf2;
    font-size: 12px;
    font-weight: 900;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.badge-text {
    color: rgba(255, 255, 255, 0.88);
    font-size: 14px;
    line-height: 1.6;
}

/* ========================================================================== 
   NEWS
   ========================================================================== */

.news {
    padding: 100px 0;
    background: #ffffff;
}

/* news-grid: 四列等宽卡片排布 */
.news-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 28px;
    align-items: stretch;
}

.news-card {
    position: relative;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    background: #ffffff;
    box-shadow: var(--shadow-sm);
    transition: transform 0.4s cubic-bezier(0.23, 1, 0.32, 1), border-color 0.3s ease, box-shadow 0.4s ease;
}

.news-card:hover {
    transform: translateY(-6px);
    border-color: var(--color-accent);
    box-shadow: var(--shadow-md);
}

.news-img {
    position: relative;
    width: 100%;
    height: 220px;
    flex: none;
    overflow: hidden;
    background:
        linear-gradient(135deg, #e8eef6, #becbdd),
        repeating-linear-gradient(90deg, rgba(0,26,58,.05) 0 1px, transparent 1px 48px);
    border-bottom: 1px solid var(--color-border);
}

.news-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.45s ease;
}

.news-card:hover .news-img img {
    transform: scale(1.045);
}

.news-content {
    position: relative;
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 24px 26px 28px;
}

.news-date-badge {
    position: absolute;
    top: 20px;
    left: 20px;
    z-index: 2;
    min-width: 80px;
    padding: 8px 10px;
    color: #ffffff;
    background: var(--color-primary);
    text-align: center;
    box-shadow: 0 8px 18px rgba(0, 26, 58, 0.22);
}

.news-date-badge strong {
    display: block;
    font-size: 24px;
    font-weight: 900;
    line-height: 1;
}

.news-date-badge span {
    display: block;
    margin-top: 2px;
    font-size: 10px;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.news-meta {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
    color: var(--color-accent);
    font-size: 12px;
    font-weight: 900;
    letter-spacing: 0.055em;
    text-transform: uppercase;
}

.news-divider {
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: var(--color-border-strong);
}

.news-title {
    margin-bottom: 12px;
    color: var(--color-primary);
    font-size: 20px;
    font-weight: 900;
    line-height: 1.28;
    letter-spacing: -0.025em;
}

.news-desc {
    flex: 1;
    color: #4b5d73;
    font-size: 15px;
    line-height: 1.7;
}

.news-more {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: 20px;
    color: var(--color-primary);
    font-size: 14px;
    font-weight: 900;
    transition: var(--transition-smooth);
}

.news-more i {
    color: var(--color-accent);
    transition: transform 0.25s ease;
}

.news-more:hover {
    color: var(--color-accent);
}

.news-more:hover i {
    transform: translateX(5px);
}

/* ========================================================================== 
   CTA AND FOOTER
   ========================================================================== */

.cta-banner-sec {
    padding: 0 0 0;
    background: #ffffff;
}

.cta-banner {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 46px;
    padding: 54px 60px;
    overflow: hidden;
    color: #ffffff;
    background: var(--color-primary);
    box-shadow: var(--shadow-lg);
}

.cta-banner::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        linear-gradient(105deg, rgba(11, 78, 219, 0.18), transparent 46%),
        repeating-linear-gradient(90deg, rgba(255,255,255,.045) 0 1px, transparent 1px 74px);
    pointer-events: none;
}

.cta-text,
.cta-action {
    position: relative;
    z-index: 1;
}

.cta-text h2 {
    margin-bottom: 16px;
    color: #ffffff;
    font-size: 34px;
    font-weight: 900;
    line-height: 1.18;
    letter-spacing: -0.035em;
}

.cta-text p {
    max-width: 760px;
    color: rgba(255, 255, 255, 0.78);
    font-size: 17px;
    line-height: 1.7;
}

.cta-action .btn {
    min-width: 292px;
    border: 1px solid rgba(255, 255, 255, 0.36);
}

/* Footer styles moved to footer.css */

/* ========================================================================== 
   EMPTY IMAGE COMPATIBILITY
   保留图片容器尺寸，后续填入现有工业摄影路径后自动显示。
   ========================================================================== */

img[src=""],
img:not([src]) {
    visibility: hidden;
}

.hero-bg:has(img[src=""]) img,
.product-img-holder:has(img[src=""]) img,
.app-card:has(img[src=""]) img,
.about-image:has(img[src=""]) img,
.news-img:has(img[src=""]) img {
    visibility: hidden;
}

/* ========================================================================== 
   LARGE SCREEN ENHANCEMENTS (min-width)
   ========================================================================== */

/* 1440px - 标准大屏显示器 */
@media (min-width: 1440px) {
    .hero {
        min-height: clamp(780px, 58vw, 960px);
    }

    .hero-content {
        width: min(100%, 720px);
        padding: 88px 0 96px;
        padding-left: clamp(56px, 5.5vw, 140px);
    }

    .hero-title {
        font-size: clamp(58px, 4.2vw, 72px);
        margin-bottom: 28px;
    }

    .hero-desc {
        font-size: 20px;
        margin-bottom: 38px;
    }

    .hero-actions .btn {
        min-height: 56px;
        padding: 0 38px;
        font-size: 16px;
    }

    .container {
        padding-left: clamp(40px, 4vw, 100px);
        padding-right: clamp(40px, 4vw, 100px);
    }

    /* Footer logo styles moved to footer.css */
}

/* 1920px - 全高清大屏 */
@media (min-width: 1920px) {
    .hero {
        min-height: clamp(860px, 56vw, 1040px);
    }

    .hero-content {
        width: min(100%, 860px);
        padding: 100px 0 110px;
        padding-left: clamp(72px, 6vw, 160px);
    }

    .hero-title {
        font-size: 72px;
        margin-bottom: 32px;
    }

    .hero-desc {
        font-size: 22px;
        max-width: 720px;
        margin-bottom: 44px;
    }

    .hero-actions .btn {
        min-height: 62px;
        padding: 0 46px;
        font-size: 17.5px;
    }

    .container {
        padding-left: clamp(60px, 5vw, 140px);
        padding-right: clamp(60px, 5vw, 140px);
    }

    /* Footer styles moved to footer.css */
}

/* 2560px - 2K / 超宽屏 */
@media (min-width: 2560px) {
    .container {
        max-width: 2400px;
        padding-left: 80px;
        padding-right: 80px;
    }

    .hero {
        min-height: clamp(960px, 52vw, 1200px);
    }

    .hero-content {
        width: min(100%, 1040px);
        padding: 120px 0 130px;
        padding-left: 120px;
    }

    .hero-title {
        font-size: 88px;
        margin-bottom: 40px;
        letter-spacing: -0.05em;
    }

    .hero-desc {
        font-size: 26px;
        max-width: 900px;
        margin-bottom: 54px;
        line-height: 1.75;
    }

    .hero-actions {
        gap: 28px;
    }

    .hero-actions .btn {
        min-height: 72px;
        padding: 0 60px;
        font-size: 20px;
    }

    /* Footer styles moved to footer.css */
}

/* ========================================================================== 
   RESPONSIVE
   ========================================================================== */

@media (max-width: 1360px) {
    .product-center-layout {
        grid-template-columns: minmax(0, 1.85fr) minmax(300px, 0.9fr);
        gap: 32px;
    }

    .product-category-grid {
        gap: 18px;
    }

    .product-category-body {
        padding: 21px 20px 22px;
    }

    .app-content {
        padding: 28px;
    }
}

@media (max-width: 1200px) {
    .container {
        max-width: 100%;
        padding-left: clamp(16px, 3vw, 40px);
        padding-right: clamp(16px, 3vw, 40px);
    }

    .benefits-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .product-center-layout {
        grid-template-columns: 1fr;
    }

    .product-brands-panel {
        max-width: none;
    }

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

    .about-grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }

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

    /* Footer styles moved to footer.css */
}

/* 提升移动端折叠菜单触发断点至 1100px，彻底避免中间尴尬分辨率下的挤压碰撞 */
@media (max-width: 1100px) {
    .hero {
        min-height: 560px;
    }

    .hero-title {
        font-size: 46px;
    }

    .hero-desc {
        font-size: 18px;
    }

    .products,
    .applications,
    .about,
    .news {
        padding: 72px 0;
    }

    .section-header {
        align-items: flex-start;
        flex-direction: column;
        margin-bottom: 34px;
    }

    .products-header {
        margin-bottom: 38px;
    }

    .products-subtitle {
        font-size: 18px;
    }

    .products-intro {
        font-size: 15px;
    }

    .section-title,
    .about-title {
        font-size: 34px;
    }

    .product-category-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

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

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

    /* Footer styles moved to footer.css */

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

    .cta-banner {
        flex-direction: column;
        align-items: flex-start;
        padding: 42px;
    }
}

/* 补充900px以下的其他微调样式 */
@media (max-width: 900px) {
    /* 保持原有的900px以下布局逻辑不变 */
}

@media (max-width: 640px) {
    .container {
        padding-left: 16px;
        padding-right: 16px;
    }

    .hero {
        min-height: 520px;
    }

    .hero-content {
        margin-left: -8px;
        padding-left: 8px;
    }

    .hero-title {
        font-size: 38px;
    }

    .hero-desc {
        font-size: 16px;
    }

    .hero-actions {
        flex-direction: column;
        align-items: stretch;
    }

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

    .product-category-grid,
    .brand-grid {
        grid-template-columns: 1fr;
    }

    .product-category-card {
        min-height: 330px;
    }

    .product-category-image {
        height: 158px;
    }

    .product-brands-panel {
        padding: 24px;
    }

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

    /* Footer styles moved to footer.css */

    .benefit-item {
        border-left: none;
        border-bottom: 1px solid rgba(255,255,255,.08);
    }

    .app-card {
        height: 300px;
    }

    .news-img {
        height: 200px;
    }

    .news-content {
        padding: 22px 24px 26px;
    }

    .cta-text h2 {
        font-size: 28px;
    }

    .cta-action,
    .cta-action .btn {
        width: 100%;
        min-width: 0;
    }

    /* Footer bottom styles moved to footer.css */
}

/* ========================================================================== 
   MOBILE PRODUCT + BRAND ORDER AND BRAND CARD REFINEMENT
   Keeps desktop structure unchanged while optimizing the mobile B2B browsing path.
   ========================================================================== */

.brands-link-mobile {
    display: none;
}

@media (max-width: 640px) {
    .products {
        padding-top: 40px;
        padding-bottom: 44px;
    }

    .product-center-layout {
        display: grid;
        grid-template-columns: 1fr;
        gap: 36px;
    }

    .product-category-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 14px;
    }

    .product-category-card {
        min-height: 0;
        border-radius: 12px;
        box-shadow: 0 8px 20px rgba(0, 26, 58, 0.055);
    }

    .product-category-image {
        height: 112px;
    }

    .product-category-body {
        min-height: 132px;
        padding: 14px 14px 42px;
    }

    .product-category-body h4 {
        margin-bottom: 7px;
        font-size: 16px;
        line-height: 1.22;
    }

    .product-category-body p {
        padding-right: 0;
        font-size: 12.5px;
        line-height: 1.48;
    }

    .product-category-arrow {
        right: 12px;
        bottom: 12px;
        width: 28px;
        height: 28px;
    }

    .product-brands-panel {
        padding: 0;
        border: 0;
        border-radius: 0;
        background: transparent;
        box-shadow: none;
    }

    .product-brands-heading {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 14px;
        margin-bottom: 16px;
        padding-bottom: 0;
        border-bottom: 0;
    }

    .product-brands-heading .product-panel-kicker {
        display: none;
    }

    .product-brands-heading h3 {
        font-size: 22px;
        line-height: 1.2;
    }

    .brands-link-mobile {
        display: inline-flex;
        flex: 0 0 auto;
        gap: 8px;
        font-size: 12px;
        font-weight: 900;
        white-space: nowrap;
    }

    .product-brands-panel > .brands-link {
        display: none;
    }

    .brand-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 10px;
    }

    .brand-card {
        min-height: 96px;
        max-height: 106px;
        padding: 14px 12px;
        border: 1px solid var(--color-border);
        border-radius: 12px;
        background: #ffffff;
        box-shadow: 0 8px 20px rgba(0, 26, 58, 0.055);
    }

    .brand-card img {
        max-width: 118px;
        max-height: 48px;
        object-fit: contain;
    }

    .applications {
        padding-top: 44px;
    }
}

@media (max-width: 380px) {
    .product-category-image {
        height: 102px;
    }

    .product-category-body {
        padding: 13px 12px 40px;
    }

    .product-category-body h4 {
        font-size: 15px;
    }

    .product-category-body p {
        font-size: 12px;
    }

    .brand-card {
        min-height: 92px;
        padding: 12px 10px;
    }

    .brand-card img {
        max-width: 104px;
        max-height: 44px;
    }
}