/* ============================================
   鼎尚网络科技 - 官方网站样式 v2
   更大气的卡片式设计 + Swiper 动态轮播
   ============================================ */

/* --- CSS Variables --- */
:root {
    --brand: #d82028;
    --brand-light: #e8454b;
    --primary: #1e40af;
    --primary-light: #3b82f6;
    --primary-dark: #1e3a5f;
    --accent: #0891b2;
    --accent-light: #22d3ee;
    --dark: #0f172a;
    --gray-900: #1e293b;
    --gray-700: #334155;
    --gray-600: #64748b;
    --gray-400: #94a3b8;
    --gray-200: #e2e8f0;
    --gray-100: #f1f5f9;
    --gray-50: #f8fafc;
    --white: #ffffff;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.04);
    --shadow: 0 4px 12px rgba(0,0,0,0.06);
    --shadow-lg: 0 12px 40px rgba(0,0,0,0.08);
    --shadow-xl: 0 24px 60px rgba(0,0,0,0.1);
    --radius-sm: 12px;
    --radius: 16px;
    --radius-lg: 24px;
    --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    --max-width: 1240px;
    --header-height: 76px;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--header-height);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
    font-size: 17px;
    line-height: 1.75;
    color: var(--gray-700);
    background: var(--white);
    -webkit-font-smoothing: antialiased;
}

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

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

.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 28px;
}

.section {
    padding: 120px 0;
}

/* --- Section Header --- */
.section-header {
    text-align: center;
    margin-bottom: 72px;
}

.section-tag {
    display: inline-block;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 3px;
    color: var(--primary);
    background: rgba(30,64,175,0.06);
    padding: 6px 18px;
    border-radius: 50px;
    margin-bottom: 20px;
}

.section-title {
    font-size: clamp(32px, 5vw, 48px);
    font-weight: 900;
    color: var(--dark);
    margin-bottom: 16px;
    letter-spacing: -1px;
}

.section-desc {
    font-size: clamp(16px, 2.2vw, 20px);
    color: var(--gray-600);
    max-width: 680px;
    margin: 0 auto;
    line-height: 1.7;
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 36px;
    font-size: 17px;
    font-weight: 700;
    border-radius: 50px;
    transition: all var(--transition);
    cursor: pointer;
    border: 2px solid transparent;
    white-space: nowrap;
}

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

.btn-primary:hover {
    background: #b71c23;
    border-color: #b71c23;
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(216, 32, 40, 0.35);
}

.btn-outline {
    background: transparent;
    color: var(--white);
    border-color: rgba(255,255,255,0.4);
}

.btn-outline:hover {
    background: rgba(255,255,255,0.1);
    border-color: var(--white);
    transform: translateY(-3px);
}

.btn-white {
    background: var(--white);
    color: var(--primary);
    border-color: var(--white);
    font-weight: 700;
}

.btn-white:hover {
    background: var(--gray-100);
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.2);
}

/* ============================================
   Header & Navigation
   ============================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid transparent;
    z-index: 1000;
    transition: all var(--transition);
}

.header.scrolled {
    border-bottom-color: var(--gray-200);
    box-shadow: var(--shadow-sm);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 24px;
    font-weight: 900;
    color: var(--dark);
    z-index: 1001;
}

.logo-img {
    width: 36px;
    height: 36px;
    flex-shrink: 0;
}

.nav {
    display: flex;
    align-items: center;
    gap: 40px;
}

.nav-link {
    font-size: 16px;
    font-weight: 500;
    color: var(--gray-600);
    transition: color var(--transition);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 0;
    width: 0;
    height: 2.5px;
    background: var(--primary);
    border-radius: 2px;
    transition: width var(--transition);
}

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

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

/* Hamburger Menu */
.nav-toggle { display: none; }

.nav-toggle-label {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
    z-index: 1001;
    padding: 6px;
}

.nav-toggle-label span {
    display: block;
    width: 26px;
    height: 2.5px;
    background: var(--dark);
    border-radius: 3px;
    transition: all 0.3s ease;
}

.nav-toggle:checked ~ .nav-toggle-label span:nth-child(1) {
    transform: translateY(8.5px) rotate(45deg);
}

.nav-toggle:checked ~ .nav-toggle-label span:nth-child(2) {
    opacity: 0;
}

.nav-toggle:checked ~ .nav-toggle-label span:nth-child(3) {
    transform: translateY(-8.5px) rotate(-45deg);
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(150deg, #0f172a 0%, #0f2744 30%, #1e3a5f 60%, #0f172a 100%);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background-image: url('../images/grid-pattern.svg');
    background-size: 60px 60px;
    opacity: 0.5;
    z-index: 1;
}

.hero-glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    z-index: 0;
}

.hero-glow--1 {
    width: 600px;
    height: 600px;
    background: rgba(8, 145, 178, 0.08);
    top: -200px;
    right: -100px;
    animation: heroGlow 8s ease-in-out infinite;
}

.hero-glow--2 {
    width: 500px;
    height: 500px;
    background: rgba(30, 64, 175, 0.08);
    bottom: -150px;
    left: -100px;
    animation: heroGlow 10s ease-in-out infinite reverse;
}

@keyframes heroGlow {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -30px) scale(1.1); }
    66% { transform: translate(-20px, 20px) scale(0.95); }
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 860px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 24px;
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: 50px;
    color: var(--accent-light);
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 32px;
    letter-spacing: 2px;
    backdrop-filter: blur(8px);
}

.hero-badge i {
    font-size: 12px;
}

.hero-title {
    font-size: clamp(40px, 7vw, 72px);
    font-weight: 900;
    color: var(--white);
    line-height: 1.15;
    margin-bottom: 28px;
    letter-spacing: -2px;
}

.hero-title__accent {
    color: var(--accent-light);
}

.hero-subtitle {
    font-size: clamp(17px, 2.5vw, 22px);
    color: rgba(255,255,255,0.7);
    line-height: 1.8;
    margin-bottom: 48px;
}

.hero-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 18px;
    flex-wrap: wrap;
}

.hero-scroll {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    color: rgba(255,255,255,0.35);
    font-size: 13px;
    letter-spacing: 1px;
    animation: bounce 2.5s ease-in-out infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
    40% { transform: translateX(-50%) translateY(-12px); }
    60% { transform: translateX(-50%) translateY(-6px); }
}

/* ---- Hero Tech Particles ---- */
.hero-particles {
    position: absolute;
    inset: 0;
    z-index: 1;
    overflow: hidden;
    pointer-events: none;
}

.hero-particles span {
    position: absolute;
    display: block;
    border-radius: 50%;
    background: rgba(255,255,255,0.12);
    animation: particleFloat 8s infinite ease-in-out;
}

.hero-particles span:nth-child(1)  { width:3px; height:3px; left:8%;  top:70%; animation-delay:0s; animation-duration:7s; }
.hero-particles span:nth-child(2)  { width:2px; height:2px; left:15%; top:25%; animation-delay:-1s; animation-duration:9s; }
.hero-particles span:nth-child(3)  { width:4px; height:4px; left:22%; top:55%; animation-delay:-2s; animation-duration:6s; }
.hero-particles span:nth-child(4)  { width:2px; height:2px; left:30%; top:80%; animation-delay:-3s; animation-duration:10s; }
.hero-particles span:nth-child(5)  { width:5px; height:5px; left:38%; top:15%; animation-delay:-4s; animation-duration:8s; background:rgba(8,145,178,0.2); }
.hero-particles span:nth-child(6)  { width:2px; height:2px; left:45%; top:65%; animation-delay:-5s; animation-duration:7s; }
.hero-particles span:nth-child(7)  { width:3px; height:3px; left:52%; top:35%; animation-delay:-1.5s; animation-duration:11s; }
.hero-particles span:nth-child(8)  { width:4px; height:4px; left:60%; top:75%; animation-delay:-2.5s; animation-duration:6.5s; background:rgba(59,130,246,0.18); }
.hero-particles span:nth-child(9)  { width:2px; height:2px; left:68%; top:20%; animation-delay:-3.5s; animation-duration:9.5s; }
.hero-particles span:nth-child(10) { width:3px; height:3px; left:75%; top:50%; animation-delay:-4.5s; animation-duration:8s; }
.hero-particles span:nth-child(11) { width:2px; height:2px; left:82%; top:85%; animation-delay:-5.5s; animation-duration:7.5s; }
.hero-particles span:nth-child(12) { width:5px; height:5px; left:88%; top:30%; animation-delay:-6.5s; animation-duration:10s; background:rgba(8,145,178,0.15); }
.hero-particles span:nth-child(13) { width:2px; height:2px; left:92%; top:60%; animation-delay:-1.8s; animation-duration:8.5s; }
.hero-particles span:nth-child(14) { width:3px; height:3px; left:18%; top:42%; animation-delay:-3.2s; animation-duration:6.8s; }
.hero-particles span:nth-child(15) { width:4px; height:4px; left:55%; top:10%; animation-delay:-2.2s; animation-duration:9.2s; background:rgba(59,130,246,0.16); }

@keyframes particleFloat {
    0%, 100% { transform: translateY(0) translateX(0) scale(1); opacity:0.4; }
    25%  { transform: translateY(-50px) translateX(15px) scale(1.6); opacity:0.9; }
    50%  { transform: translateY(-25px) translateX(-10px) scale(0.8); opacity:0.3; }
    75%  { transform: translateY(-60px) translateX(8px) scale(1.3); opacity:0.7; }
}

/* ---- Hero Geometric Shapes ---- */
.hero-geo {
    position: absolute;
    inset: 0;
    z-index: 1;
    pointer-events: none;
    overflow: hidden;
}

.hero-geo__hex {
    position: absolute;
    width: 120px;
    height: 140px;
    background: rgba(59,130,246,0.04);
    clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
    animation: geoRotate 20s linear infinite;
}

.hero-geo__hex--1 {
    top: -60px;
    right: 8%;
    width: 160px;
    height: 180px;
    animation-duration: 25s;
}

.hero-geo__hex--2 {
    bottom: -40px;
    left: 5%;
    width: 100px;
    height: 115px;
    animation-duration: 18s;
    animation-direction: reverse;
    background: rgba(8,145,178,0.04);
}

.hero-geo__ring {
    position: absolute;
    border-radius: 50%;
    border: 1px solid rgba(255,255,255,0.04);
    animation: ringPulse 6s ease-in-out infinite;
}

.hero-geo__ring--1 {
    width: 300px;
    height: 300px;
    top: 15%;
    left: -100px;
    animation-delay: 0s;
}

.hero-geo__ring--2 {
    width: 200px;
    height: 200px;
    bottom: 20%;
    right: -60px;
    animation-delay: -3s;
    animation-duration: 8s;
}

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

@keyframes ringPulse {
    0%, 100% { transform: scale(1); opacity:0.5; }
    50%      { transform: scale(1.25); opacity:0.15; }
}

/* ---- Hero Scan Line ---- */
.hero-scan {
    position: absolute;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg,
        transparent 0%,
        rgba(34,211,238,0) 20%,
        rgba(34,211,238,0.25) 50%,
        rgba(34,211,238,0) 80%,
        transparent 100%
    );
    z-index: 1;
    pointer-events: none;
    animation: scanDown 5s ease-in-out infinite;
}

@keyframes scanDown {
    0%   { top: 0%; opacity:1; }
    80%  { top: 92%; opacity:1; }
    100% { top: 92%; opacity:0; }
}

/* ============================================
   About Section
   ============================================ */
.about {
    background: var(--white);
}

.about-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 80px;
    align-items: center;
}

.about-text h3 {
    font-size: 30px;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 24px;
}

.about-text p {
    color: var(--gray-600);
    margin-bottom: 18px;
    font-size: 17px;
    line-height: 1.9;
}

.about-text strong {
    color: var(--primary);
    font-weight: 700;
}

.about-features {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-top: 32px;
}

.about-feature {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 16px;
    font-weight: 600;
    color: var(--gray-900);
    background: var(--gray-50);
    padding: 12px 20px;
    border-radius: 50px;
}

.about-feature i {
    color: var(--primary);
    font-size: 20px;
}

.about-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.about-img-wrapper {
    position: relative;
    padding: 20px;
}

.about-img-wrapper::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, rgba(30,64,175,0.06), rgba(8,145,178,0.06));
    z-index: -1;
}

.about-img-wrapper img {
    width: 100%;
    max-width: 520px;
}

/* ============================================
   Services Section
   ============================================ */
.services {
    background: var(--gray-50);
}

/* Swiper outer wrapper — full width with gutters for nav arrows */
.swiper-outer {
    position: relative;
    padding: 0 64px;
}

.swiper-nav .swiper-button-prev,
.swiper-nav .swiper-button-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 52px;
    height: 52px;
    background: var(--white);
    color: var(--primary);
    border-radius: 50%;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition);
    margin-top: -24px;
}

.swiper-nav .swiper-button-prev {
    left: 6px;
}

.swiper-nav .swiper-button-next {
    right: 6px;
}

.swiper-nav .swiper-button-prev:hover,
.swiper-nav .swiper-button-next:hover {
    background: var(--primary);
    color: var(--white);
    transform: translateY(-50%) scale(1.1);
}

.swiper-nav .swiper-button-prev::after,
.swiper-nav .swiper-button-next::after {
    font-size: 18px;
    font-weight: 900;
}

.services-swiper {
    padding: 8px 0 60px 0 !important;
}

.swiper-nav + .services-swiper {
    margin: 0;
}

.service-card {
    background: var(--white);
    padding: 44px 36px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    transition: all var(--transition);
    border: 1px solid var(--gray-200);
    height: 100%;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}

.service-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: linear-gradient(90deg, var(--brand), #e8454b);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: transparent;
}

.service-card:hover::after {
    transform: scaleX(1);
}

.service-icon {
    width: 72px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(30,64,175,0.08), rgba(8,145,178,0.08));
    border-radius: 18px;
    margin-bottom: 28px;
    font-size: 32px;
    color: var(--primary);
    transition: all var(--transition);
    flex-shrink: 0;
}

.service-card:hover .service-icon {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: var(--white);
    transform: scale(1.08);
    box-shadow: 0 8px 30px rgba(30, 64, 175, 0.3);
}

.service-card h3 {
    font-size: 22px;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 14px;
}

.service-card p {
    font-size: 16px;
    color: var(--gray-600);
    line-height: 1.8;
    flex: 1;
    margin-bottom: 20px;
}

.service-tags {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    padding-top: 16px;
    border-top: 1px solid var(--gray-100);
}

.service-tags li {
    font-size: 13px;
    font-weight: 600;
    color: var(--primary);
    background: rgba(30,64,175,0.06);
    padding: 4px 12px;
    border-radius: 6px;
}

/* ============================================
   CTA Banner
   ============================================ */
.cta-banner {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-banner::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 25% 40%, rgba(8,145,178,0.15) 0%, transparent 50%),
        radial-gradient(circle at 75% 60%, rgba(255,255,255,0.06) 0%, transparent 50%);
}

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

.cta-banner h2 {
    font-size: clamp(30px, 5vw, 44px);
    font-weight: 900;
    color: var(--white);
    margin-bottom: 18px;
}

.cta-banner p {
    font-size: 19px;
    color: rgba(255,255,255,0.75);
    max-width: 600px;
    margin: 0 auto 40px;
    line-height: 1.7;
}

/* ============================================
   Advantages Section
   ============================================ */
.advantages {
    background: var(--white);
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
}

.advantage-card {
    text-align: center;
    padding: 48px 28px;
    border-radius: var(--radius-lg);
    transition: all var(--transition);
    border: 1px solid transparent;
    background: var(--white);
}

.advantage-card:hover {
    background: var(--gray-50);
    border-color: var(--gray-200);
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

.advantage-icon {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    font-size: 34px;
    color: var(--primary);
    background: rgba(30,64,175,0.06);
    border-radius: 50%;
    transition: all var(--transition);
}

.advantage-card:hover .advantage-icon {
    background: var(--brand);
    color: var(--white);
    transform: scale(1.08);
    box-shadow: 0 10px 35px rgba(216, 32, 40, 0.25);
}

.advantage-card h3 {
    font-size: 22px;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 14px;
}

.advantage-card p {
    font-size: 16px;
    color: var(--gray-600);
    line-height: 1.8;
}

/* ============================================
   Case Studies Section
   ============================================ */
.cases {
    background: var(--gray-50);
}

.cases-swiper {
    padding: 8px 0 60px 0 !important;
}

.case-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: all var(--transition);
    height: 100%;
    border: 1px solid var(--gray-200);
}

.case-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
}

.case-image {
    height: 160px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(30,64,175,0.06), rgba(8,145,178,0.08));
    font-size: 56px;
    color: var(--primary);
}

.case-body {
    padding: 36px 32px;
}

.case-cat {
    display: inline-block;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 2px;
    color: var(--accent);
    text-transform: uppercase;
    margin-bottom: 12px;
}

.case-card h3 {
    font-size: 22px;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 14px;
}

.case-card p {
    font-size: 16px;
    color: var(--gray-600);
    line-height: 1.8;
    margin-bottom: 24px;
}

.case-metrics {
    display: flex;
    gap: 32px;
    padding-top: 20px;
    border-top: 1px solid var(--gray-100);
}

.case-metrics div {
    text-align: center;
}

.case-metrics strong {
    display: block;
    font-size: 28px;
    font-weight: 900;
    color: var(--primary);
    line-height: 1.2;
}

.case-metrics span {
    font-size: 13px;
    color: var(--gray-600);
    margin-top: 4px;
    display: block;
}

/* Swiper pagination — shared across all swipers */
.swiper-pagination-bullet {
    width: 10px;
    height: 10px;
    background: var(--gray-400);
    opacity: 0.4;
    transition: all 0.3s;
}

.swiper-pagination-bullet-active {
    opacity: 1;
    background: var(--primary) !important;
    width: 28px;
    border-radius: 5px;
}

/* ============================================
   Contact Section
   ============================================ */
.contact {
    background: var(--white);
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.contact-card {
    background: var(--gray-50);
    padding: 52px 36px;
    text-align: center;
    border-radius: var(--radius-lg);
    transition: all var(--transition);
    border: 1px solid var(--gray-200);
    position: relative;
    overflow: hidden;
}

.contact-card::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--brand), #e8454b);
    border-radius: 4px 4px 0 0;
    transition: width var(--transition);
}

.contact-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
    background: var(--white);
}

.contact-card:hover::before {
    width: 60%;
}

.contact-icon {
    width: 72px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    font-size: 30px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: var(--white);
    border-radius: 50%;
    box-shadow: 0 8px 30px rgba(30, 64, 175, 0.25);
}

.contact-card h3 {
    font-size: 22px;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 12px;
}

.contact-value {
    font-size: 20px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 6px;
    word-break: break-all;
}

.contact-desc {
    display: block;
    font-size: 14px;
    color: var(--gray-400);
    margin-bottom: 20px;
}

.contact-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 15px;
    font-weight: 700;
    color: var(--white);
    background: var(--brand);
    padding: 10px 24px;
    border-radius: 50px;
    transition: all var(--transition);
}

.contact-link:hover {
    background: #b71c23;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(216, 32, 40, 0.3);
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background: var(--dark);
    color: rgba(255,255,255,0.65);
    padding: 72px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.2fr;
    gap: 56px;
    padding-bottom: 56px;
    border-bottom: 1px solid rgba(255,255,255,0.07);
}

.footer-logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 22px;
    font-weight: 900;
    color: var(--white);
    margin-bottom: 18px;
}

.footer-logo-img {
    width: 40px;
    height: 40px;
    flex-shrink: 0;
}

.footer-brand p {
    font-size: 15px;
    line-height: 1.9;
    color: rgba(255,255,255,0.45);
}

.footer-links h4,
.footer-contact h4 {
    font-size: 17px;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 20px;
}

.footer-links a {
    display: block;
    font-size: 15px;
    color: rgba(255,255,255,0.45);
    padding: 6px 0;
    transition: color var(--transition);
}

.footer-links a:hover {
    color: var(--accent-light);
}

.footer-contact p {
    font-size: 15px;
    color: rgba(255,255,255,0.45);
    margin-bottom: 10px;
}

.footer-contact i {
    width: 20px;
    margin-right: 8px;
    color: var(--accent-light);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
    padding: 28px 0;
    font-size: 14px;
    color: rgba(255,255,255,0.3);
}

/* ============================================
   Swiper Global Overrides
   ============================================ */
.swiper-pagination-bullet {
    transition: all 0.3s ease;
}

.swiper-button-prev,
.swiper-button-next {
    transition: all 0.3s ease;
}

/* ============================================
   Responsive: Tablet (768px - 1024px)
   ============================================ */
@media (max-width: 1024px) {
    .section {
        padding: 96px 0;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 52px;
    }

    .about-image {
        order: -1;
    }

    .about-img-wrapper img {
        max-width: 400px;
        margin: 0 auto;
    }

    .advantages-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }

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

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

/* ============================================
   Responsive: Mobile (< 768px)
   ============================================ */
@media (max-width: 768px) {
    .section {
        padding: 80px 0;
    }

    .section-header {
        margin-bottom: 48px;
    }

    .section-title {
        font-size: 30px;
    }

    /* Mobile Navigation */
    .nav-toggle-label {
        display: flex;
    }

    .nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 300px;
        height: 100vh;
        background: var(--white);
        flex-direction: column;
        padding: 110px 44px 44px;
        gap: 28px;
        box-shadow: var(--shadow-xl);
        transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    }

    .nav-toggle:checked ~ .nav {
        right: 0;
    }

    /* Add overlay when nav is open */
    .nav-toggle:checked ~ .nav::before {
        content: '';
        position: fixed;
        inset: 0;
        background: rgba(15, 23, 42, 0.5);
        z-index: -1;
    }

    .nav-link {
        font-size: 20px;
        color: var(--dark);
        font-weight: 600;
    }

    /* Hero */
    .hero {
        min-height: 90vh;
    }

    .hero-title {
        font-size: 34px;
        letter-spacing: -1px;
    }

    .hero-actions {
        flex-direction: column;
        gap: 14px;
    }

    .btn {
        width: 100%;
        justify-content: center;
        padding: 18px 32px;
        font-size: 17px;
    }

    /* About */
    .about-grid {
        gap: 40px;
    }

    .about-text h3 {
        font-size: 24px;
    }

    .about-features {
        flex-direction: column;
    }

    .about-img-wrapper img {
        max-width: 320px;
    }

    /* Swiper outer — reduce gutter on mobile */
    .swiper-outer {
        padding: 0 20px;
    }

    .swiper-nav {
        display: none;
    }

    .service-card {
        padding: 36px 28px;
    }

    /* Advantages */
    .advantages-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .advantage-card {
        padding: 36px 24px;
    }

    .case-image {
        height: 120px;
        font-size: 44px;
    }

    .case-body {
        padding: 28px 24px;
    }

    .case-metrics {
        gap: 24px;
    }

    .case-metrics strong {
        font-size: 24px;
    }

    /* Contact */
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .contact-card {
        padding: 40px 28px;
    }

    /* CTA */
    .cta-banner {
        padding: 72px 0;
    }

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

    /* Footer */
    .footer {
        padding: 56px 0 0;
    }

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

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

/* ============================================
   Responsive: Small Mobile (< 480px)
   ============================================ */
@media (max-width: 480px) {
    .container {
        padding: 0 18px;
    }

    .section-title {
        font-size: 26px;
    }

    .hero-title {
        font-size: 28px;
    }

    .about-feature {
        font-size: 14px;
        padding: 10px 16px;
    }

    .service-card {
        padding: 30px 22px;
    }

    .service-icon {
        width: 60px;
        height: 60px;
        font-size: 28px;
    }

    .service-card h3 {
        font-size: 20px;
    }

    .contact-value {
        font-size: 17px;
    }
}