/* ============================================
   合肥荣坤新能源 - 官方网站样式
   ============================================ */

/* Custom Cursor */
.cursor-dot, .cursor-ring {
    pointer-events: none;
    position: fixed;
    z-index: 9999;
    border-radius: 50%;
    transition: opacity 0.3s;
    mix-blend-mode: difference;
}
.cursor-dot {
    width: 8px; height: 8px;
    background: #fff;
    margin-left: -1px; margin-top: -1px;
}
.cursor-ring {
    width: 36px; height: 36px;
    border: 2px solid #fff;
    margin-left: -18px; margin-top: -18px;
    transition: width 0.3s, height 0.3s, margin 0.3s, border-color 0.3s, background 0.3s;
}
.cursor-ring.hover {
    width: 56px; height: 56px;
    margin-left: -28px; margin-top: -28px;
    border-color: #fff;
    background: rgba(255,255,255,0.15);
}

/* Grain Overlay */
.grain-overlay {
    position: fixed;
    inset: 0;
    z-index: 9998;
    pointer-events: none;
    opacity: 0.03;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
    background-size: 200px 200px;
}

/* Animated Gradient Border (running border) */
@keyframes border-spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}
.running-border {
    position: relative;
    overflow: hidden;
}
.running-border::before {
    content: '';
    position: absolute;
    inset: -2px;
    border-radius: inherit;
    background: conic-gradient(from var(--border-angle, 0deg), transparent, var(--primary), var(--accent), transparent);
    animation: border-spin 4s linear infinite;
    z-index: -1;
    opacity: 0;
    transition: opacity 0.5s;
}
.running-border:hover::before {
    opacity: 1;
}
@property --border-angle {
    syntax: '<angle>';
    initial-value: 0deg;
    inherits: false;
}

/* Shimmer text gradient */
@keyframes shimmer {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}
.shimmer-text {
    background: linear-gradient(270deg, var(--primary), var(--accent), var(--primary-light), var(--primary));
    background-size: 300% 100%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: shimmer 4s ease-in-out infinite;
}

/* Magnetic wrapper */
.magnetic-wrap {
    display: inline-block;
    transition: transform 0.2s cubic-bezier(0.2, 0.8, 0.2, 1);
}

/* Scroll Reveal (staggered children) */
.reveal-stagger > * {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.7s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.reveal-stagger.visible > *:nth-child(1) { transition-delay: 0s; opacity: 1; transform: translateY(0); }
.reveal-stagger.visible > *:nth-child(2) { transition-delay: 0.1s; opacity: 1; transform: translateY(0); }
.reveal-stagger.visible > *:nth-child(3) { transition-delay: 0.2s; opacity: 1; transform: translateY(0); }
.reveal-stagger.visible > *:nth-child(4) { transition-delay: 0.3s; opacity: 1; transform: translateY(0); }
.reveal-stagger.visible > *:nth-child(5) { transition-delay: 0.4s; opacity: 1; transform: translateY(0); }
.reveal-stagger.visible > *:nth-child(6) { transition-delay: 0.5s; opacity: 1; transform: translateY(0); }
.reveal-stagger.visible > *:nth-child(7) { transition-delay: 0.6s; opacity: 1; transform: translateY(0); }
.reveal-stagger.visible > *:nth-child(8) { transition-delay: 0.7s; opacity: 1; transform: translateY(0); }

/* Glass card effect */
.glass-card {
    background: rgba(255,255,255,0.03) !important;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255,255,255,0.08) !important;
}

/* Scroll Progress Bar */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background: var(--gradient-1);
    z-index: 1001;
    border-radius: 0 3px 3px 0;
    transition: width 0.1s linear;
    box-shadow: 0 0 12px rgba(0, 125, 193, 0.6);
}

/* Back to Top */
.back-to-top {
    position: fixed;
    bottom: 40px;
    right: 40px;
    width: 48px;
    height: 48px;
    background: var(--dark-2);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 50%;
    color: var(--white);
    cursor: pointer;
    z-index: 999;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(10px);
}
.back-to-top.visible {
    opacity: 1;
    transform: translateY(0);
}
.back-to-top:hover {
    background: var(--primary);
    border-color: var(--primary);
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(0, 125, 193, 0.4);
}
.back-to-top svg {
    width: 20px;
    height: 20px;
}

:root {
    --primary: #007dc1;
    --primary-dark: #005d99;
    --primary-light: #3399d4;
    --accent: #10B981;
    --accent-dark: #059669;
    --dark: #002451;
    --dark-2: #0a2f5e;
    --dark-3: #1a3f6e;
    --gray: #94A3B8;
    --gray-light: #CBD5E1;
    --light: #F1F5F9;
    --white: #FFFFFF;
    --gradient-1: linear-gradient(135deg, #007dc1, #10B981);
    --gradient-2: linear-gradient(135deg, #002451 0%, #0a2f5e 50%, #002451 100%);
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1);
}

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

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

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--dark);
    background: var(--white);
    line-height: 1.7;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ---- Navigation ---- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 20px 0;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.navbar.scrolled {
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(20px);
    padding: 12px 0;
    box-shadow: 0 4px 30px rgba(0,0,0,0.2);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--white);
    font-weight: 700;
    font-size: 1.5rem;
    letter-spacing: 1px;
}

.logo-img {
    height: 72px;
    width: auto;
    object-fit: contain;
    border-radius: 8px;
}

.nav-links {
    display: flex;
    gap: 32px;
}

.nav-links a {
    color: rgba(255,255,255,0.8);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.3s;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: width 0.3s;
}

.nav-links a:hover {
    color: var(--white);
}

.nav-links a:hover::after {
    width: 100%;
}

.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(--white);
    transition: all 0.3s;
}

/* ---- Hero Section ---- */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: var(--dark);
}

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

.hero-gradient {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 80% 60% at 50% 40%, rgba(0,125,193,0.2) 0%, transparent 70%),
        radial-gradient(ellipse 60% 50% at 80% 60%, rgba(16,185,129,0.12) 0%, transparent 70%),
        radial-gradient(ellipse 40% 40% at 20% 80%, rgba(0,125,193,0.1) 0%, transparent 70%);
    transition: transform 0.3s ease-out;
    will-change: transform;
}

/* Hero floating orbs */
.hero-orbs {
    position: absolute;
    inset: 0;
    z-index: 1;
    pointer-events: none;
}
.hero-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(60px);
    opacity: 0.15;
    animation: orb-float 20s ease-in-out infinite;
}
.hero-orb:nth-child(1) {
    width: 400px; height: 400px;
    background: var(--primary);
    top: 10%; left: 5%;
    animation-delay: 0s;
    animation-duration: 25s;
}
.hero-orb:nth-child(2) {
    width: 300px; height: 300px;
    background: var(--accent);
    top: 50%; right: 5%;
    animation-delay: -7s;
    animation-duration: 20s;
}
.hero-orb:nth-child(3) {
    width: 250px; height: 250px;
    background: var(--primary);
    bottom: 10%; left: 40%;
    animation-delay: -14s;
    animation-duration: 22s;
}
@keyframes orb-float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    25% { transform: translate(30px, -40px) scale(1.15); }
    50% { transform: translate(-20px, -20px) scale(0.9); }
    75% { transform: translate(-30px, 30px) scale(1.1); }
}

.hero-particles {
    position: absolute;
    inset: 0;
}

.hero-particles .particle {
    position: absolute;
    border-radius: 50%;
    background: rgba(14, 165, 233, 0.3);
    animation: float-particle linear infinite;
}

@keyframes float-particle {
    0% { transform: translateY(100vh) scale(0); opacity: 0; }
    10% { opacity: 1; }
    90% { opacity: 1; }
    100% { transform: translateY(-10vh) scale(1); opacity: 0; }
}

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

.hero-badge {
    display: inline-block;
    padding: 8px 24px;
    background: rgba(0, 125, 193, 0.12);
    border: 1px solid rgba(0, 125, 193, 0.3);
    border-radius: 100px;
    color: var(--primary-light);
    font-size: 0.85rem;
    font-weight: 500;
    letter-spacing: 2px;
    margin-bottom: 32px;
    animation: fadeInDown 1s ease, badge-pulse 3s ease-in-out infinite;
    animation-delay: 0s, 1s;
}
@keyframes badge-pulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(0,125,193,0.2); }
    50% { box-shadow: 0 0 0 12px rgba(0,125,193,0); }
}

.hero-title {
    margin-bottom: 24px;
}

.title-line {
    display: block;
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 900;
    color: var(--white);
    line-height: 1.2;
    letter-spacing: -1px;
}

.title-line.accent {
    background: linear-gradient(270deg, var(--primary), var(--accent), var(--primary-light), var(--primary));
    background-size: 300% 100%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: shimmer 3s ease-in-out infinite;
}

.hero-desc {
    color: var(--gray);
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 40px;
    animation: fadeInUp 1s ease 0.2s both;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-bottom: 60px;
    animation: fadeInUp 1s ease 0.4s both;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 36px;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: none;
    font-family: inherit;
}

.btn-primary {
    background: var(--gradient-1);
    color: var(--white);
    box-shadow: 0 4px 15px rgba(0,125,193,0.3);
    animation: btn-glow 2.5s ease-in-out infinite;
}
.btn-primary:hover {
    transform: translateY(-2px) scale(1.03);
    box-shadow: 0 8px 35px rgba(0,125,193,0.5), 0 0 60px rgba(0,125,193,0.15);
}
@keyframes btn-glow {
    0%, 100% { box-shadow: 0 4px 15px rgba(0,125,193,0.3); }
    50% { box-shadow: 0 4px 30px rgba(0,125,193,0.5), 0 0 40px rgba(0,125,193,0.1); }
}

.btn-outline {
    background: transparent;
    color: var(--white);
    border: 1.5px solid rgba(255,255,255,0.3);
}

.btn-outline:hover {
    border-color: var(--primary);
    background: rgba(14,165,233,0.1);
    transform: translateY(-2px);
}

.btn-full {
    width: 100%;
}

.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
    padding: 32px 0;
    border-top: 1px solid rgba(255,255,255,0.1);
    animation: fadeInUp 1s ease 0.6s both;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 2rem;
    font-weight: 900;
    color: var(--white);
    display: inline;
}

.stat-unit {
    font-size: 0.9rem;
    color: var(--primary-light);
    font-weight: 600;
}

.stat-label {
    display: block;
    font-size: 0.8rem;
    color: var(--gray);
    margin-top: 4px;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: rgba(255,255,255,0.15);
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--gray);
    font-size: 0.7rem;
    letter-spacing: 3px;
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--primary), transparent);
    animation: scrollLine 2s ease-in-out infinite;
}

@keyframes scrollLine {
    0%, 100% { opacity: 0; transform: scaleY(0); transform-origin: top; }
    50% { opacity: 1; transform: scaleY(1); }
}

/* ---- Section Common ---- */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-tag {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 4px;
    color: var(--primary);
    margin-bottom: 16px;
}

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

.section-title {
    font-size: clamp(2rem, 4vw, 2.8rem);
    font-weight: 900;
    color: var(--dark);
    margin-bottom: 16px;
}

.section-header.light .section-title {
    color: var(--white);
}

.section-line {
    width: 60px;
    height: 3px;
    background: var(--gradient-1);
    margin: 0 auto 16px;
    border-radius: 2px;
}

.section-desc {
    color: var(--gray);
    font-size: 1rem;
    max-width: 500px;
    margin: 0 auto;
}

.section-header.light .section-desc {
    color: var(--gray);
}

/* ---- About Section ---- */
.about {
    padding: 120px 0;
    background: var(--white);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.about-text h3 {
    font-size: 1.6rem;
    font-weight: 800;
    margin-bottom: 24px;
    color: var(--dark);
}

.about-text p {
    color: var(--dark-3);
    margin-bottom: 16px;
    font-size: 0.95rem;
    line-height: 1.9;
}

.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.feature-card {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 24px;
    background: var(--light);
    border-radius: 12px;
    transition: all 0.3s;
    border: 1px solid transparent;
}

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

.feature-icon {
    width: 48px;
    height: 48px;
    flex-shrink: 0;
    color: var(--primary);
}

.feature-icon svg {
    width: 100%;
    height: 100%;
}

.feature-info h4 {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--dark);
    line-height: 1;
}

.feature-info p {
    font-size: 0.85rem;
    color: var(--gray);
    margin-top: 4px;
}

/* ---- Business Section ---- */
.business {
    padding: 120px 0;
    background: var(--gradient-2);
    position: relative;
}

.business::before {
    content: '';
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(ellipse 50% 50% at 20% 50%, rgba(14,165,233,0.08) 0%, transparent 70%),
        radial-gradient(ellipse 50% 50% at 80% 50%, rgba(16,185,129,0.08) 0%, transparent 70%);
}

.business-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    position: relative;
    z-index: 1;
}

.business-card {
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: default;
}

.business-card:hover {
    transform: translateY(-8px) perspective(1000px) rotateX(3deg);
}

.card-bg {
    position: absolute;
    inset: 0;
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 16px;
    transition: all 0.4s;
}

.business-card:hover .card-bg {
    background: rgba(255,255,255,0.1);
    border-color: rgba(0,125,193,0.4);
    box-shadow: 0 20px 40px rgba(0,0,0,0.2), 0 0 60px rgba(0,125,193,0.08);
}

.card-content {
    position: relative;
    z-index: 1;
    padding: 36px 28px;
}

.card-icon {
    width: 56px;
    height: 56px;
    color: var(--primary-light);
    margin-bottom: 24px;
}

.card-icon svg {
    width: 100%;
    height: 100%;
}

.business-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 12px;
}

.business-card p {
    color: var(--gray);
    font-size: 0.9rem;
    line-height: 1.7;
    margin-bottom: 20px;
}

.card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    list-style: none;
}

.card-tags li {
    padding: 4px 12px;
    background: rgba(14,165,233,0.15);
    border-radius: 100px;
    font-size: 0.75rem;
    color: var(--primary-light);
    font-weight: 500;
}

/* ---- Qualifications Section ---- */
.qualifications {
    padding: 120px 0;
    background: var(--light);
}

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

.qual-card {
    background: var(--white);
    padding: 28px 20px;
    border-radius: 12px;
    text-align: center;
    transition: all 0.3s;
    border: 1px solid transparent;
}

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

.qual-icon {
    width: 48px;
    height: 48px;
    color: var(--primary);
    margin: 0 auto 16px;
}

.qual-icon svg {
    width: 100%;
    height: 100%;
}

.qual-card h4 {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 8px;
    line-height: 1.4;
}

.qual-card p {
    font-size: 0.8rem;
    color: var(--gray);
}

/* ---- Projects Section ---- */
.projects {
    padding: 120px 0;
    background: var(--gradient-2);
    position: relative;
}

.projects::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse 60% 40% at 50% 0%, rgba(14,165,233,0.06) 0%, transparent 70%);
}

.projects-tabs {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 48px;
    position: relative;
    z-index: 1;
}

.tab-btn {
    padding: 12px 32px;
    border-radius: 8px;
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.1);
    color: var(--gray);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    font-family: inherit;
}

.tab-btn:hover {
    background: rgba(255,255,255,0.12);
    color: var(--white);
}

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

.projects-content {
    position: relative;
    z-index: 1;
}

.tab-panel {
    display: none;
}

.tab-panel.active {
    display: block;
    animation: fadeIn 0.5s ease;
}

.project-list {
    display: grid;
    gap: 12px;
}

.project-item {
    display: flex;
    align-items: center;
    gap: 24px;
    padding: 24px 28px;
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 12px;
    transition: all 0.3s;
}

.project-item:hover {
    background: rgba(255,255,255,0.1);
    border-color: rgba(14,165,233,0.3);
    transform: translateX(8px);
}

.project-index {
    font-size: 1.5rem;
    font-weight: 900;
    color: var(--primary);
    opacity: 0.5;
    min-width: 48px;
}

.project-info h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--white);
    margin-bottom: 4px;
}

.project-info p {
    font-size: 0.85rem;
    color: var(--gray);
}

/* ---- Partners Section ---- */
.partners {
    padding: 120px 0;
    background: var(--white);
    overflow: hidden;
}

.partners-marquee {
    margin-bottom: 48px;
    overflow: hidden;
    position: relative;
}

.partners-marquee::before,
.partners-marquee::after {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    width: 120px;
    z-index: 2;
    pointer-events: none;
}

.partners-marquee::before {
    left: 0;
    background: linear-gradient(to right, var(--white), transparent);
}

.partners-marquee::after {
    right: 0;
    background: linear-gradient(to left, var(--white), transparent);
}

.marquee-track {
    display: flex;
    gap: 32px;
    animation: marquee 30s linear infinite;
    width: max-content;
}

.partner-item {
    flex-shrink: 0;
    padding: 12px 28px;
    background: var(--light);
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--dark-3);
    white-space: nowrap;
}

@keyframes marquee {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

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

.partner-card {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background: var(--light);
    border-radius: 12px;
    border: 1px solid transparent;
    transition: all 0.3s;
}

.partner-card:hover {
    border-color: var(--primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.partner-card span {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--dark-3);
}

/* ---- Contact Section ---- */
.contact {
    padding: 120px 0;
    background: var(--dark);
    position: relative;
}

.contact::before {
    content: '';
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(ellipse 50% 50% at 30% 50%, rgba(14,165,233,0.06) 0%, transparent 70%),
        radial-gradient(ellipse 50% 50% at 70% 50%, rgba(16,185,129,0.06) 0%, transparent 70%);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    position: relative;
    z-index: 1;
}

.contact-info h3 {
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--white);
    margin-bottom: 12px;
}

.contact-info > p {
    color: var(--gray);
    margin-bottom: 36px;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

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

.contact-item svg {
    width: 24px;
    height: 24px;
    color: var(--primary);
    flex-shrink: 0;
    margin-top: 2px;
}

.contact-item strong {
    display: block;
    color: var(--white);
    font-size: 0.9rem;
    margin-bottom: 4px;
}

.contact-item span {
    color: var(--gray);
    font-size: 0.85rem;
}

.contact-form form {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-group.full {
    grid-column: 1 / -1;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 14px 18px;
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: 8px;
    color: var(--white);
    font-size: 0.9rem;
    font-family: inherit;
    transition: all 0.3s;
    outline: none;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--gray);
}

.form-group select {
    appearance: none;
    cursor: pointer;
}

.form-group select option {
    background: var(--dark-2);
    color: var(--white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--primary);
    background: rgba(14,165,233,0.08);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.contact-form .btn-primary {
    margin-top: 8px;
}

/* ---- Footer ---- */
.footer {
    background: #0A0F1A;
    padding: 60px 0 0;
}

.footer-top {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 60px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.footer-brand p {
    color: var(--gray);
    margin-top: 12px;
    font-size: 0.9rem;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.footer-col h4 {
    color: var(--white);
    font-size: 0.9rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.footer-col a,
.footer-col span {
    display: block;
    color: var(--gray);
    font-size: 0.85rem;
    text-decoration: none;
    margin-bottom: 8px;
    transition: color 0.3s;
}

.footer-col a:hover {
    color: var(--primary-light);
}

.footer-bottom {
    padding: 24px 0;
    text-align: center;
}

.footer-bottom p {
    color: var(--gray);
    font-size: 0.8rem;
}

/* ---- Animations ---- */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

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

/* Scroll Reveal */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* ---- Feature Card Highlight ---- */
.feature-card.highlight {
    background: linear-gradient(135deg, rgba(14,165,233,0.08), rgba(16,185,129,0.08));
    border: 1px solid var(--primary);
}

.feature-card.highlight .feature-info h4 {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ---- Residential Hero / Brand Badges ---- */
.residential-hero {
    margin-top: 20px;
}

.residential-main {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.brand-badge {
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: 16px;
    padding: 32px 24px;
    text-align: center;
    transition: all 0.3s;
}

.brand-badge:hover {
    border-color: var(--primary);
    transform: translateY(-4px);
    background: rgba(255,255,255,0.12);
}

.brand-badge.haier {
    border-color: rgba(14,165,233,0.5);
    background: rgba(14,165,233,0.12);
    position: relative;
}

.brand-badge.haier::after {
    content: 'NO.1';
    position: absolute;
    top: -1px;
    right: 16px;
    background: var(--gradient-1);
    color: var(--white);
    font-size: 0.7rem;
    font-weight: 800;
    padding: 4px 10px;
    border-radius: 0 0 8px 8px;
}

.badge-label {
    font-size: 0.75rem;
    color: var(--primary-light);
    font-weight: 600;
    letter-spacing: 2px;
    margin-bottom: 12px;
}

.badge-brand {
    font-size: 2rem;
    font-weight: 900;
    color: var(--white);
    margin-bottom: 8px;
}

.badge-desc {
    font-size: 0.85rem;
    color: var(--gray);
}

/* ---- Invest / Recruitment Section ---- */
.invest {
    padding: 120px 0;
    background: var(--light);
}

.invest-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 32px;
    align-items: start;
}

.invest-card {
    border-radius: 16px;
    overflow: hidden;
}

.invest-card-bg {
    position: absolute;
    inset: 0;
    background: var(--white);
}

.invest-card.main-card {
    position: relative;
    box-shadow: var(--shadow-lg);
}

.invest-card-content {
    position: relative;
    z-index: 1;
    padding: 40px;
}

.invest-card-content h3 {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 32px;
}

.invest-reasons {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.reason-item {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.reason-num {
    font-size: 1.8rem;
    font-weight: 900;
    color: var(--primary);
    opacity: 0.3;
    line-height: 1;
    min-width: 48px;
}

.reason-text strong {
    display: block;
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 4px;
}

.reason-text p {
    font-size: 0.9rem;
    color: var(--dark-3);
    line-height: 1.6;
}

.cta-card {
    background: var(--gradient-2);
    border-radius: 16px;
    position: relative;
    overflow: hidden;
}

.cta-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse 80% 60% at 50% 30%, rgba(14,165,233,0.1) 0%, transparent 70%);
}

.cta-content {
    position: relative;
    z-index: 1;
    padding: 40px;
    text-align: center;
}

.cta-content h3 {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--white);
    margin-bottom: 8px;
}

.cta-desc {
    color: var(--gray);
    font-size: 0.95rem;
    margin-bottom: 32px;
}

.cta-person {
    margin-bottom: 16px;
}

.cta-person strong {
    display: block;
    font-size: 1.3rem;
    color: var(--white);
}

.cta-person span {
    color: var(--primary-light);
    font-size: 0.85rem;
}

.cta-phone {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 1.6rem;
    font-weight: 900;
    color: var(--primary-light);
    text-decoration: none;
    margin-bottom: 24px;
    transition: color 0.3s;
}

.cta-phone:hover {
    color: var(--white);
}

.cta-phone svg {
    width: 24px;
    height: 24px;
}

.cta-features {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.cta-features span {
    padding: 6px 16px;
    background: rgba(14,165,233,0.15);
    border-radius: 100px;
    font-size: 0.8rem;
    color: var(--primary-light);
    font-weight: 600;
}

/* ---- Core Brands Section ---- */
.core-brands {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-bottom: 48px;
}

.core-brand-card {
    background: var(--white);
    border: 2px solid var(--light);
    border-radius: 16px;
    padding: 32px 24px;
    text-align: center;
    transition: all 0.3s;
}

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

.core-brand-card.haier-card {
    border-color: var(--primary);
    background: linear-gradient(135deg, rgba(14,165,233,0.04), rgba(16,185,129,0.04));
    position: relative;
}

.core-brand-card.haier-card::after {
    content: 'NO.1';
    position: absolute;
    top: -1px;
    right: 20px;
    background: var(--gradient-1);
    color: var(--white);
    font-size: 0.7rem;
    font-weight: 800;
    padding: 4px 12px;
    border-radius: 0 0 8px 8px;
}

.brand-logo {
    font-size: 2.2rem;
    font-weight: 900;
    color: var(--dark);
    margin-bottom: 8px;
}

.brand-title {
    font-size: 0.9rem;
    color: var(--primary);
    font-weight: 700;
    margin-bottom: 4px;
}

.brand-sub {
    font-size: 0.8rem;
    color: var(--gray);
}

/* ---- Contact Person ---- */
.contact-person {
    background: rgba(14,165,233,0.1);
    border-radius: 12px;
    padding: 20px;
    margin: -8px -8px 0;
}

.contact-phone-link {
    display: inline-block;
    margin-top: 8px;
    font-size: 1.3rem;
    font-weight: 900;
    color: var(--primary-light);
    text-decoration: none;
}

.contact-phone-link:hover {
    text-decoration: underline;
}

/* ---- Responsive ---- */
@media (max-width: 1024px) {
    .business-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .qual-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .partners-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    .residential-main {
        grid-template-columns: repeat(2, 1fr);
    }
    .invest-grid {
        grid-template-columns: 1fr;
    }
    .core-brands {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(15, 23, 42, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 24px;
        gap: 16px;
    }

    .nav-links.open {
        display: flex;
    }

    .nav-toggle {
        display: flex;
    }

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

    .stat-divider {
        display: none;
    }

    .stat-item {
        flex: 0 0 calc(50% - 8px);
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

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

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

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

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

    .contact-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

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

    .form-group.full {
        grid-column: 1;
    }

    .footer-top {
        grid-template-columns: 1fr;
        gap: 40px;
    }

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

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

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

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

@media (max-width: 480px) {
    .about-features {
        grid-template-columns: 1fr;
    }

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

    .footer-links {
        grid-template-columns: 1fr;
    }

    .hero-badge {
        font-size: 0.75rem;
    }

    .residential-main {
        grid-template-columns: 1fr;
    }

    .core-brands {
        grid-template-columns: 1fr;
    }
}