/* ========================================
   海南晟祺科技有限公司 - 企业官网样式
   ======================================== */

/* ===== CSS Variables ===== */
:root {
    --primary: #1a5f8a;
    --primary-dark: #144a6c;
    --primary-light: #2d7ba8;
    --accent: #00a8a8;
    --accent-light: #1bc4c4;
    --text-dark: #1a2b3c;
    --text-body: #4a5a6a;
    --text-light: #8a9aaa;
    --bg-white: #ffffff;
    --bg-light: #f7f9fb;
    --bg-gray: #eef2f5;
    --border: #e0e6ea;
    --shadow-sm: 0 2px 8px rgba(26, 95, 138, 0.06);
    --shadow-md: 0 4px 20px rgba(26, 95, 138, 0.1);
    --shadow-lg: 0 8px 40px rgba(26, 95, 138, 0.12);
    --radius: 10px;
    --radius-lg: 16px;
    --transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    --max-width: 1200px;
}

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

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

body {
    font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    color: var(--text-body);
    background: var(--bg-white);
    line-height: 1.7;
    overflow-x: hidden;
}

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

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

ul {
    list-style: none;
}

/* ===== Layout Helpers ===== */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 90px 0;
}

.section-light {
    background: var(--bg-light);
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 60px;
}

.section-header .label {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 14px;
}

.section-header h2 {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 16px;
    line-height: 1.3;
}

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

.section-divider {
    width: 50px;
    height: 3px;
    background: var(--primary);
    border-radius: 2px;
    margin: 0 auto 20px;
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 13px 32px;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: var(--radius);
    border: none;
    cursor: pointer;
    transition: var(--transition);
    letter-spacing: 0.5px;
}

.btn-primary {
    background: var(--primary);
    color: #fff;
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-outline {
    background: transparent;
    color: #fff;
    border: 2px solid rgba(255, 255, 255, 0.5);
}

.btn-outline:hover {
    background: #fff;
    color: var(--primary);
    border-color: #fff;
}

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

.btn-ghost:hover {
    background: var(--primary);
    color: #fff;
}

/* ===== Header / Navigation ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(12px);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.header-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

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

.logo-icon {
    width: 42px;
    height: 42px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 800;
    font-size: 1.2rem;
    letter-spacing: -1px;
}

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

.logo-text .name {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-dark);
    line-height: 1.2;
}

.logo-text .sub {
    font-size: 0.7rem;
    color: var(--text-light);
    letter-spacing: 1px;
}

.nav {
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav a {
    padding: 8px 18px;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-body);
    border-radius: 8px;
    position: relative;
}

.nav a:hover {
    color: var(--primary);
    background: rgba(26, 95, 138, 0.06);
}

.nav a.active {
    color: var(--primary);
    font-weight: 600;
}

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

.nav-cta {
    margin-left: 12px;
    padding: 9px 22px !important;
    background: var(--primary);
    color: #fff !important;
    border-radius: var(--radius);
    font-weight: 600;
}

.nav-cta:hover {
    background: var(--primary-dark) !important;
    color: #fff !important;
}

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 6px;
}

.mobile-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-dark);
    border-radius: 1px;
    transition: var(--transition);
}

/* ===== Hero Section ===== */
.hero {
    min-height: 480px;
    display: flex;
    align-items: center;
    position: relative;
    background: linear-gradient(135deg, #0d3b5c 0%, #1a5f8a 40%, #1a6b7e 100%);
    overflow: hidden;
    padding: 72px 0 50px;
}

.hero::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(circle at 80% 20%, rgba(0, 168, 168, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 20% 80%, rgba(45, 123, 168, 0.2) 0%, transparent 50%);
}

.hero-bg-pattern {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.06;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.5) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.5) 1px, transparent 1px);
    background-size: 60px 60px;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 650px;
    padding-top: 20px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50px;
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.78rem;
    font-weight: 500;
    margin-bottom: 18px;
    backdrop-filter: blur(6px);
}

.hero-badge .dot {
    width: 8px;
    height: 8px;
    background: var(--accent-light);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

.hero h1 {
    font-size: 2.6rem;
    font-weight: 800;
    color: #fff;
    line-height: 1.25;
    margin-bottom: 16px;
    letter-spacing: -0.5px;
}

.hero h1 .highlight {
    color: var(--accent-light);
    position: relative;
}

.hero .subtitle {
    font-size: 1.02rem;
    color: rgba(255, 255, 255, 0.75);
    line-height: 1.7;
    margin-bottom: 28px;
}

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

.hero-stats {
    display: flex;
    gap: 40px;
    margin-top: 36px;
    padding-top: 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.hero-stat .num {
    font-size: 1.8rem;
    font-weight: 800;
    color: #fff;
    line-height: 1;
}

.hero-stat .num .plus {
    color: var(--accent-light);
}

.hero-stat .label {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.6);
    margin-top: 8px;
}

.hero-visual {
    position: absolute;
    right: -100px;
    top: 50%;
    transform: translateY(-50%);
    width: 480px;
    height: 480px;
    z-index: 1;
}

.hero-orb {
    position: absolute;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.hero-orb.o1 {
    width: 400px;
    height: 400px;
    top: 40px;
    left: 40px;
    animation: floatOrb 20s ease-in-out infinite;
}

.hero-orb.o2 {
    width: 280px;
    height: 280px;
    top: 100px;
    left: 100px;
    animation: floatOrb 16s ease-in-out infinite reverse;
}

.hero-orb.o3 {
    width: 160px;
    height: 160px;
    top: 160px;
    left: 160px;
    background: radial-gradient(circle, rgba(0, 168, 168, 0.15), transparent 70%);
    border: none;
    animation: pulseGlow 4s ease-in-out infinite;
}

@keyframes floatOrb {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(20px, -20px); }
}

@keyframes pulseGlow {
    0%, 100% { opacity: 0.6; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.05); }
}

/* ===== Page Banner (subpages) ===== */
.page-banner {
    padding: 140px 0 80px;
    background: linear-gradient(135deg, #0d3b5c, #1a5f8a);
    color: #fff;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-banner::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(circle at 70% 30%, rgba(0, 168, 168, 0.12) 0%, transparent 50%);
}

.page-banner .container {
    position: relative;
    z-index: 2;
}

.page-banner h1 {
    font-size: 2.6rem;
    font-weight: 700;
    margin-bottom: 14px;
}

.page-banner p {
    font-size: 1.05rem;
    color: rgba(255, 255, 255, 0.7);
    max-width: 600px;
    margin: 0 auto;
}

.breadcrumb {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 24px;
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.5);
}

.breadcrumb a:hover {
    color: #fff;
}

.breadcrumb .sep {
    color: rgba(255, 255, 255, 0.3);
}

/* ===== Business Cards ===== */
.business-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.business-card {
    background: #fff;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid var(--border);
}

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

.business-card .card-header {
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.business-card .card-header.bg-thermo {
    background: linear-gradient(135deg, #d62828, #e85d4e);
}

.business-card .card-header.bg-midea {
    background: linear-gradient(135deg, #1a5f8a, #00a8a8);
}

.business-card .card-header.bg-gilson {
    background: linear-gradient(135deg, #e87700, #f5a623);
}

.business-card .card-icon {
    font-size: 4rem;
    z-index: 2;
    transition: var(--transition);
}

.business-card:hover .card-icon {
    transform: scale(1.15);
}

.business-card .card-header::after {
    content: "";
    position: absolute;
    bottom: -50px;
    right: -50px;
    width: 150px;
    height: 150px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 50%;
}

.business-card .card-body {
    padding: 32px;
}

.business-card .card-tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--primary);
    background: rgba(26, 95, 138, 0.08);
    padding: 4px 12px;
    border-radius: 20px;
    margin-bottom: 14px;
}

.business-card h3 {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 12px;
}

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

.business-card .card-features {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.business-card .card-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
    color: var(--text-body);
}

.business-card .card-features li::before {
    content: "✓";
    width: 20px;
    height: 20px;
    background: rgba(0, 168, 168, 0.1);
    color: var(--accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
    flex-shrink: 0;
}

/* ===== Feature / Why Choose Us ===== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 28px;
}

.feature-card {
    text-align: center;
    padding: 40px 24px;
    background: #fff;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-light);
}

.feature-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 22px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
}

.feature-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 12px;
}

.feature-card p {
    font-size: 0.9rem;
    color: var(--text-light);
    line-height: 1.6;
}

/* ===== Promo Banner Carousel ===== */
.promo-banner {
    position: relative;
    height: 300px;
    overflow: hidden;
}

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

.promo-slide {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.8s ease, visibility 0.8s ease;
}

.promo-slide.active {
    opacity: 1;
    visibility: visible;
}

/* Slide backgrounds */
.promo-slide.slide-pcr {
    background: linear-gradient(120deg, #0d3b5c 0%, #1a5f8a 40%, #00a8a8 100%);
}

.promo-slide.slide-freezer {
    background: linear-gradient(120deg, #0a2e4a 0%, #1565a0 50%, #4fc3f7 100%);
}

.promo-slide.slide-nanodrop {
    background: linear-gradient(120deg, #1a3a5c 0%, #2563a0 45%, #7c4dff 100%);
}

.promo-slide::before {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 70% 50%, rgba(255,255,255,0.12) 0%, transparent 60%);
    pointer-events: none;
}

.promo-slide-content {
    position: relative;
    z-index: 2;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 40px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 40px;
    width: 100%;
}

.promo-text .promo-badge {
    display: inline-block;
    padding: 4px 14px;
    background: rgba(255,255,255,0.2);
    border: 1px solid rgba(255,255,255,0.35);
    border-radius: 20px;
    color: #fff;
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 1px;
    margin-bottom: 10px;
    backdrop-filter: blur(4px);
}

.promo-text h3 {
    font-size: 1.7rem;
    font-weight: 800;
    color: #fff;
    line-height: 1.3;
    margin-bottom: 8px;
}

.promo-text .promo-desc {
    font-size: 0.92rem;
    color: rgba(255,255,255,0.85);
    line-height: 1.6;
    margin-bottom: 14px;
}

.promo-text .promo-features {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 16px;
}

.promo-text .promo-feature {
    padding: 6px 14px;
    background: rgba(255,255,255,0.15);
    border-radius: 16px;
    font-size: 0.85rem;
    color: #fff;
    border: 1px solid rgba(255,255,255,0.2);
}

.promo-text .promo-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 9px 24px;
    background: #fff;
    color: var(--primary);
    border-radius: 30px;
    font-weight: 700;
    font-size: 0.88rem;
    transition: var(--transition);
    text-decoration: none;
}

.promo-text .promo-link:hover {
    background: var(--accent);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.2);
}

/* Visual side */
.promo-visual {
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.promo-visual .promo-emoji {
    font-size: 5rem;
    filter: drop-shadow(0 8px 30px rgba(0,0,0,0.25));
    animation: promoFloat 4s ease-in-out infinite;
}

.promo-visual .promo-product-img {
    max-width: 220px;
    max-height: 220px;
    width: auto;
    height: auto;
    object-fit: contain;
    border-radius: 16px;
    filter: drop-shadow(0 12px 40px rgba(0,0,0,0.35));
    animation: promoFloat 4s ease-in-out infinite;
    position: relative;
    z-index: 2;
}

.promo-visual .promo-ring {
    position: absolute;
    width: 160px;
    height: 160px;
    border: 2px dashed rgba(255,255,255,0.2);
    border-radius: 50%;
    animation: promoSpin 20s linear infinite;
}

.promo-visual .promo-ring.r2 {
    width: 200px;
    height: 200px;
    border-style: solid;
    border-color: rgba(255,255,255,0.1);
    animation-direction: reverse;
    animation-duration: 30s;
}

@keyframes promoFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-18px); }
}

@keyframes promoSpin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Dots navigation */
.promo-dots {
    position: absolute;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 10;
}

.promo-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255,255,255,0.4);
    border: none;
    cursor: pointer;
    transition: var(--transition);
    padding: 0;
}

.promo-dot.active {
    width: 32px;
    border-radius: 5px;
    background: #fff;
}

/* Arrows */
.promo-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: rgba(255,255,255,0.2);
    border: 1px solid rgba(255,255,255,0.3);
    color: #fff;
    font-size: 1.2rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    z-index: 10;
    backdrop-filter: blur(4px);
}

.promo-arrow:hover {
    background: rgba(255,255,255,0.35);
    transform: translateY(-50%) scale(1.1);
}

.promo-arrow.prev { left: 20px; }
.promo-arrow.next { right: 20px; }

/* ===== Partners Strip ===== */
.partners-strip {
    padding: 50px 0;
    background: var(--bg-light);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.partners-row {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 60px;
    flex-wrap: wrap;
}

.partner-item {
    display: flex;
    align-items: center;
    gap: 14px;
    opacity: 0.7;
    transition: var(--transition);
}

.partner-item:hover {
    opacity: 1;
}

.partner-item .partner-name {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-dark);
}

.partner-item .partner-tag {
    font-size: 0.72rem;
    color: var(--text-light);
}

/* ===== CTA Section ===== */
.cta-section {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    color: #fff;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 50% 50%, rgba(0, 168, 168, 0.1), transparent 60%);
}

.cta-section .container {
    position: relative;
    z-index: 2;
}

.cta-section h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.cta-section p {
    font-size: 1.05rem;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 32px;
}

/* ===== About Page Styles ===== */
.about-intro {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-intro .text-block h2 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 20px;
    line-height: 1.3;
}

.about-intro .text-block p {
    font-size: 1rem;
    color: var(--text-body);
    margin-bottom: 18px;
    line-height: 1.85;
}

.about-intro .text-block .highlight-text {
    color: var(--primary);
    font-weight: 600;
}

.about-intro .visual-block {
    position: relative;
}

.about-visual-card {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: var(--radius-lg);
    padding: 48px;
    color: #fff;
    position: relative;
    overflow: hidden;
}

.about-visual-card::after {
    content: "";
    position: absolute;
    bottom: -80px;
    right: -80px;
    width: 250px;
    height: 250px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 50%;
}

.about-visual-card .big-num {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1;
    margin-bottom: 8px;
}

.about-visual-card .big-label {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 30px;
}

.about-visual-card .mini-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.15);
    position: relative;
    z-index: 2;
}

.about-visual-card .mini-stat .num {
    font-size: 1.6rem;
    font-weight: 700;
}

.about-visual-card .mini-stat .label {
    font-size: 0.82rem;
    color: rgba(255, 255, 255, 0.7);
    margin-top: 4px;
}

/* ===== Values / Culture ===== */
.values-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.value-card {
    padding: 40px 32px;
    background: #fff;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    transition: var(--transition);
    text-align: left;
}

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

.value-card .value-num {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--bg-gray);
    line-height: 1;
    margin-bottom: 20px;
    transition: var(--transition);
}

.value-card:hover .value-num {
    color: var(--primary-light);
}

.value-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 14px;
}

.value-card p {
    font-size: 0.95rem;
    color: var(--text-light);
    line-height: 1.75;
}

/* ===== Timeline ===== */
.timeline {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
}

.timeline::before {
    content: "";
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--border);
    transform: translateX(-50%);
}

.timeline-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 50px;
    position: relative;
}

.timeline-item:nth-child(even) {
    flex-direction: row-reverse;
}

.timeline-item .timeline-content {
    width: calc(50% - 36px);
    padding: 24px 28px;
    background: #fff;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
}

.timeline-item .timeline-dot {
    position: absolute;
    left: 50%;
    top: 24px;
    transform: translateX(-50%);
    width: 14px;
    height: 14px;
    background: var(--primary);
    border: 3px solid #fff;
    border-radius: 50%;
    box-shadow: 0 0 0 3px rgba(26, 95, 138, 0.2);
    z-index: 2;
}

.timeline-item .timeline-year {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--accent);
    letter-spacing: 1px;
    margin-bottom: 8px;
}

.timeline-item .timeline-content h4 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.timeline-item .timeline-content p {
    font-size: 0.9rem;
    color: var(--text-light);
    line-height: 1.6;
}

/* ===== Products Page ===== */
.product-category {
    margin-bottom: 70px;
}

.product-category-header {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 36px;
    padding-bottom: 20px;
    border-bottom: 2px solid var(--border);
}

.product-category-header .cat-badge {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    flex-shrink: 0;
}

.cat-badge.thermo {
    background: linear-gradient(135deg, #d62828, #e85d4e);
    color: #fff;
}

.cat-badge.midea {
    background: linear-gradient(135deg, #1a5f8a, #00a8a8);
    color: #fff;
}

.cat-badge.gilson {
    background: linear-gradient(135deg, #e87700, #f5a623);
    color: #fff;
}

.product-category-header h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-dark);
}

.product-category-header .cat-sub {
    font-size: 0.85rem;
    color: var(--text-light);
    margin-top: 4px;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 26px;
}

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

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

.product-card .product-img {
    height: 180px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    background: #f0f4f8;
}

.product-card .product-img .product-photo {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    transition: var(--transition);
}

.product-card:hover .product-img .product-photo {
    transform: scale(1.08);
}

.product-card .product-img.bg-blue {
    background: linear-gradient(135deg, #e8f0f7, #d4e4f0);
}

.product-card .product-img.bg-teal {
    background: linear-gradient(135deg, #e0f5f5, #c8ebeb);
}

.product-card .product-img.bg-red {
    background: linear-gradient(135deg, #fce8e8, #f8d4d4);
}

.product-card .product-img.bg-amber {
    background: linear-gradient(135deg, #fff4e0, #ffe8c4);
}

.product-card .product-img .product-emoji {
    font-size: 3.5rem;
    transition: var(--transition);
}

.product-card:hover .product-emoji {
    transform: scale(1.15) rotate(-5deg);
}

.product-card .product-body {
    padding: 24px;
}

.product-card .product-tag {
    display: inline-block;
    font-size: 0.72rem;
    font-weight: 600;
    padding: 3px 10px;
    border-radius: 4px;
    margin-bottom: 10px;
}

.product-tag.tag-new {
    background: rgba(0, 168, 168, 0.1);
    color: var(--accent);
}

.product-tag.tag-hot {
    background: rgba(214, 40, 40, 0.1);
    color: #d62828;
}

.product-tag.tag-classic {
    background: rgba(26, 95, 138, 0.1);
    color: var(--primary);
}

.product-card h4 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.product-card .product-desc {
    font-size: 0.88rem;
    color: var(--text-light);
    margin-bottom: 16px;
    line-height: 1.6;
}

.product-card .product-specs {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.product-card .spec-chip {
    font-size: 0.72rem;
    padding: 4px 10px;
    background: var(--bg-gray);
    color: var(--text-body);
    border-radius: 4px;
}

/* ===== Product Category Filter Tabs ===== */
.category-tabs {
    display: flex;
    justify-content: center;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 50px;
}

.cat-tab {
    padding: 10px 24px;
    font-size: 0.92rem;
    font-weight: 600;
    color: var(--text-body);
    background: #fff;
    border: 1.5px solid var(--border);
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

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

.cat-tab.active {
    background: var(--primary);
    border-color: var(--primary);
    color: #fff;
}

.cat-tab .cat-count {
    font-size: 0.72rem;
    padding: 2px 7px;
    background: rgba(0, 0, 0, 0.06);
    border-radius: 10px;
    font-weight: 700;
}

.cat-tab.active .cat-count {
    background: rgba(255, 255, 255, 0.2);
    color: #fff;
}

/* Product card with category badge & slogan */
.product-card .product-slogan {
    font-size: 0.82rem;
    font-style: italic;
    color: var(--accent);
    font-weight: 600;
    margin-bottom: 14px;
    padding-left: 10px;
    border-left: 3px solid var(--accent);
}

.product-card .product-features-list {
    list-style: none;
    margin-bottom: 16px;
}

.product-card .product-features-list li {
    font-size: 0.82rem;
    color: var(--text-body);
    padding: 4px 0 4px 18px;
    position: relative;
    line-height: 1.5;
}

.product-card .product-features-list li::before {
    content: "▸";
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: 700;
}

.product-card .product-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 14px;
    border-top: 1px solid var(--border);
}

.product-card .product-footer .inquire-btn {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--primary);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.product-card .product-footer .inquire-btn:hover {
    gap: 10px;
    color: var(--primary-dark);
}

.product-card .product-footer .video-badge {
    font-size: 0.72rem;
    color: var(--text-light);
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

/* Hide category sections when filtered */
.product-category.hidden {
    display: none;
}

/* ===== Promotion / Trade-in Section ===== */
.promo-section {
    padding: 80px 0;
    background: linear-gradient(135deg, #f0f7ff, #e8f5f5);
}

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

.promo-card {
    background: #fff;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border);
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

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

.promo-card .promo-header {
    padding: 24px 28px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: #fff;
    position: relative;
}

.promo-card .promo-header .promo-label {
    display: inline-block;
    font-size: 0.72rem;
    font-weight: 700;
    padding: 3px 12px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 20px;
    margin-bottom: 10px;
    letter-spacing: 1px;
}

.promo-card .promo-header h4 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 6px;
}

.promo-card .promo-header .promo-slogan {
    font-size: 0.88rem;
    color: rgba(255, 255, 255, 0.8);
}

.promo-card .promo-body {
    padding: 24px 28px;
}

.promo-card .promo-body p {
    font-size: 0.88rem;
    color: var(--text-body);
    margin-bottom: 14px;
    line-height: 1.7;
}

.promo-card .promo-deadline {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8rem;
    color: var(--text-light);
    margin-bottom: 18px;
}

.promo-card .promo-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--primary);
}

.promo-card .promo-link:hover {
    gap: 10px;
}

/* ===== Tech Resources Section ===== */
.resources-section {
    padding: 80px 0;
    background: var(--bg-light);
}

.resources-card {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 50px;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.resources-card .resources-text h3 {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 16px;
}

.resources-card .resources-text p {
    font-size: 0.95rem;
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 24px;
}

.resources-list {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.resource-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 16px 20px;
    background: var(--bg-light);
    border-radius: var(--radius);
    transition: var(--transition);
    cursor: pointer;
}

.resource-item:hover {
    background: rgba(26, 95, 138, 0.06);
    transform: translateX(4px);
}

.resource-item .res-icon {
    width: 42px;
    height: 42px;
    background: var(--primary);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    color: #fff;
    flex-shrink: 0;
}

.resource-item .res-info .res-title {
    font-size: 0.92rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 2px;
}

.resource-item .res-info .res-type {
    font-size: 0.78rem;
    color: var(--text-light);
}

.resource-item .res-arrow {
    margin-left: auto;
    color: var(--text-light);
    font-size: 0.9rem;
}

/* ===== Services Section ===== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.service-card {
    padding: 36px 30px;
    background: #fff;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-light);
}

.service-card .service-icon {
    width: 52px;
    height: 52px;
    background: rgba(26, 95, 138, 0.08);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 20px;
}

.service-card h4 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 12px;
}

.service-card p {
    font-size: 0.92rem;
    color: var(--text-light);
    line-height: 1.7;
    flex-grow: 1;
}

.service-card .service-link {
    margin-top: 18px;
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--primary);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.service-card .service-link:hover {
    gap: 10px;
}

/* ===== Contact Page ===== */
.contact-layout {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 50px;
}

.contact-info-card {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    border-radius: var(--radius-lg);
    padding: 44px;
    color: #fff;
    position: relative;
    overflow: hidden;
}

.contact-info-card::after {
    content: "";
    position: absolute;
    bottom: -100px;
    right: -100px;
    width: 300px;
    height: 300px;
    background: rgba(255, 255, 255, 0.06);
    border-radius: 50%;
}

.contact-info-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 8px;
    position: relative;
    z-index: 2;
}

.contact-info-card .sub {
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 36px;
    position: relative;
    z-index: 2;
}

.contact-info-list {
    display: flex;
    flex-direction: column;
    gap: 28px;
    position: relative;
    z-index: 2;
}

.contact-info-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.contact-info-item .icon-box {
    width: 44px;
    height: 44px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.contact-info-item .info-label {
    font-size: 0.78rem;
    color: rgba(255, 255, 255, 0.55);
    margin-bottom: 4px;
}

.contact-info-item .info-value {
    font-size: 1rem;
    font-weight: 600;
    color: #fff;
    line-height: 1.5;
}

.contact-form-card {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 44px;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
}

.contact-form-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.contact-form-card .sub {
    font-size: 0.95rem;
    color: var(--text-light);
    margin-bottom: 32px;
}

.form-group {
    margin-bottom: 22px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-group label {
    display: block;
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.form-group label .required {
    color: #d62828;
}

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

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    background: #fff;
    box-shadow: 0 0 0 3px rgba(26, 95, 138, 0.08);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.form-submit {
    width: 100%;
    padding: 15px;
    font-size: 1rem;
    justify-content: center;
}

.form-success {
    display: none;
    padding: 16px 20px;
    background: rgba(0, 168, 168, 0.08);
    border: 1px solid rgba(0, 168, 168, 0.3);
    border-radius: var(--radius);
    color: var(--accent);
    font-size: 0.92rem;
    font-weight: 600;
    margin-bottom: 20px;
    align-items: center;
    gap: 10px;
}

.form-success.show {
    display: flex;
}

/* Map Section */
.map-section {
    margin-top: 60px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
}

.map-placeholder {
    height: 380px;
    background: linear-gradient(135deg, #e8f0f7, #d4e4f0);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.map-placeholder::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        linear-gradient(rgba(26, 95, 138, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(26, 95, 138, 0.05) 1px, transparent 1px);
    background-size: 40px 40px;
}

.map-pin {
    position: relative;
    z-index: 2;
    text-align: center;
}

.map-pin .pin-icon {
    font-size: 3rem;
    margin-bottom: 12px;
    animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-12px); }
}

.map-pin .pin-text {
    font-size: 1rem;
    font-weight: 600;
    color: var(--primary);
}

.map-pin .pin-sub {
    font-size: 0.85rem;
    color: var(--text-light);
    margin-top: 4px;
}

/* ===== Footer ===== */
.footer {
    background: #0d2535;
    color: rgba(255, 255, 255, 0.6);
    padding: 70px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.2fr;
    gap: 50px;
    padding-bottom: 50px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand .logo {
    margin-bottom: 20px;
}

.footer-brand .logo-text .name {
    color: #fff;
}

.footer-brand p {
    font-size: 0.9rem;
    line-height: 1.8;
    margin-bottom: 20px;
    max-width: 320px;
}

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

.footer-social a {
    width: 38px;
    height: 38px;
    background: rgba(255, 255, 255, 0.06);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    transition: var(--transition);
}

.footer-social a:hover {
    background: var(--primary);
    color: #fff;
    transform: translateY(-2px);
}

.footer-col h4 {
    font-size: 1rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 22px;
}

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

.footer-col ul li a {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.55);
}

.footer-col ul li a:hover {
    color: #fff;
    padding-left: 4px;
}

.footer-contact-item {
    display: flex;
    gap: 10px;
    margin-bottom: 14px;
    font-size: 0.88rem;
    color: rgba(255, 255, 255, 0.55);
}

.footer-contact-item .icon {
    flex-shrink: 0;
    margin-top: 2px;
}

.footer-bottom {
    padding: 24px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.82rem;
    color: rgba(255, 255, 255, 0.35);
}

.footer-bottom a:hover {
    color: rgba(255, 255, 255, 0.7);
}

/* ===== Scroll Reveal Animation ===== */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

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

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .hero { min-height: 420px; }
    .hero h1 { font-size: 2.2rem; }
    .hero-visual { display: none; }
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .business-grid { grid-template-columns: repeat(2, 1fr); }
    .products-grid { grid-template-columns: repeat(2, 1fr); }
    .promo-grid { grid-template-columns: 1fr; }
    .resources-card { grid-template-columns: 1fr; gap: 36px; padding: 36px; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
    .promo-slide-content { grid-template-columns: 1fr; gap: 20px; text-align: center; }
    .promo-visual .promo-emoji { font-size: 5rem; }
    .promo-visual .promo-product-img { max-width: 180px; max-height: 180px; }
    .promo-visual .promo-ring { width: 160px; height: 160px; }
    .promo-visual .promo-ring.r2 { width: 200px; height: 200px; }
    .promo-text .promo-features { justify-content: center; }
    .promo-banner { height: 360px; }
}

@media (max-width: 768px) {
    .section { padding: 60px 0; }
    .section-header h2 { font-size: 1.7rem; }
    .section-header { margin-bottom: 40px; }

    .nav {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background: #fff;
        flex-direction: column;
        padding: 16px;
        gap: 0;
        box-shadow: var(--shadow-md);
    }

    .nav.open {
        display: flex;
    }

    .nav a {
        width: 100%;
        padding: 14px 18px;
        border-radius: 8px;
    }

    .nav a.active::after { display: none; }

    .nav-cta {
        margin: 12px 0 0;
        text-align: center;
    }

    .mobile-toggle { display: flex; }

    .hero { min-height: auto; padding: 100px 0 60px; }
    .hero h1 { font-size: 1.8rem; }
    .hero .subtitle { font-size: 0.95rem; }
    .hero-stats { gap: 28px; flex-wrap: wrap; }
    .hero-stat .num { font-size: 1.5rem; }

    .business-grid { grid-template-columns: 1fr; }
    .features-grid { grid-template-columns: 1fr; }
    .products-grid { grid-template-columns: 1fr; }
    .services-grid { grid-template-columns: 1fr; }
    .values-grid { grid-template-columns: 1fr; }
    .promo-grid { grid-template-columns: 1fr; }
    .resources-card { grid-template-columns: 1fr; padding: 28px; }

    .promo-banner { height: 400px; }
    .promo-text h3 { font-size: 1.6rem; }
    .promo-text .promo-desc { font-size: 0.92rem; }
    .promo-visual .promo-emoji { font-size: 4rem; }
    .promo-visual .promo-product-img { max-width: 140px; max-height: 140px; }
    .promo-visual .promo-ring { width: 120px; height: 120px; }
    .promo-visual .promo-ring.r2 { width: 160px; height: 160px; }
    .promo-arrow { width: 36px; height: 36px; font-size: 1rem; }
    .promo-arrow.prev { left: 8px; }
    .promo-arrow.next { right: 8px; }

    .about-intro { grid-template-columns: 1fr; gap: 40px; }
    .contact-layout { grid-template-columns: 1fr; }
    .form-row { grid-template-columns: 1fr; }

    .page-banner { padding: 110px 0 60px; }
    .page-banner h1 { font-size: 2rem; }

    .footer-grid { grid-template-columns: 1fr; }
    .footer-bottom { flex-direction: column; gap: 10px; text-align: center; }

    .timeline::before { left: 20px; }
    .timeline-item { flex-direction: row !important; }
    .timeline-item .timeline-content { width: calc(100% - 50px); margin-left: 50px; }
    .timeline-item .timeline-dot { left: 20px; }

    .partners-row { gap: 30px; }
    .category-tabs { gap: 8px; }
    .cat-tab { padding: 8px 16px; font-size: 0.85rem; }
}