/* ===========================
  舜元建设集团 - 企业官网样式
   简约大气 · 专业品质
   =========================== */

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

:root {
    --color-primary: #1a2332;
    --color-primary-light: #2a3548;
    --color-accent: #c5a55a;
    --color-accent-light: #d4b87a;
    --color-accent-dark: #a88a45;
    --color-bg: #f8f8f6;
    --color-white: #ffffff;
    --color-text: #2c2c2c;
    --color-text-light: #666666;
    --color-text-muted: #999999;
    --color-border: #e0e0e0;
    --color-overlay: rgba(26, 35, 50, 0.85);
    --color-overlay-light: rgba(26, 35, 50, 0.5);
    --color-overlay-dark: rgba(15, 25, 35, 0.92);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.15);
    --transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --transition-fast: all 0.25s ease;
    --max-width: 1280px;
    --header-height: 72px;
}

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

body {
    font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.8;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

ul, ol {
    list-style: none;
}

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    color: var(--color-primary);
}

h1 { font-size: 2.8rem; }
h2 { font-size: 2.2rem; }
h3 { font-size: 1.6rem; }
h4 { font-size: 1.25rem; }

.section-title {
    text-align: center;
    margin-bottom: 3rem;
    position: relative;
}

.section-title h2 {
    display: inline-block;
    position: relative;
    padding-bottom: 1rem;
}

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--color-accent);
}

.section-title .subtitle {
    display: block;
    font-size: 0.9rem;
    color: var(--color-text-muted);
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-top: 0.8rem;
    font-weight: 400;
}

.section-title.left {
    text-align: left;
}

.section-title.left h2::after {
    left: 0;
    transform: none;
}

/* ===== Layout ===== */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 2rem;
}

.section {
    padding: 6rem 0;
}

.section-sm {
    padding: 4rem 0;
}

.bg-white { background: var(--color-white); }
.bg-light { background: var(--color-bg); }
.bg-dark { background: var(--color-primary); color: var(--color-white); }
.bg-dark h2, .bg-dark h3, .bg-dark h4 { color: var(--color-white); }

/* ===== Header ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    z-index: 1000;
    transition: var(--transition);
    border-bottom: 1px solid transparent;
}

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

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

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: 1px;
}

.logo img {
    height: 46px;
    width: auto;
    flex-shrink: 0;
}

.logo .logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.logo .logo-text .cn {
    font-size: 1rem;
}

.logo .logo-text .en {
    font-size: 0.65rem;
    color: var(--color-text-muted);
    letter-spacing: 1.5px;
    text-transform: uppercase;
}

/* ===== Navigation ===== */
.nav {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav a {
    padding: 0.5rem 1.2rem;
    font-size: 0.95rem;
    color: var(--color-text);
    position: relative;
    font-weight: 500;
}

.nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--color-accent);
    transition: var(--transition-fast);
}

.nav a:hover, .nav a.active {
    color: var(--color-accent);
}

.nav a:hover::after, .nav a.active::after {
    width: 24px;
}

.nav-cta {
    margin-left: 1rem;
    padding: 0.55rem 1.5rem !important;
    background: var(--color-primary);
    color: var(--color-white) !important;
    border-radius: 4px;
    font-size: 0.9rem !important;
    transition: var(--transition-fast);
}

.nav-cta:hover {
    background: var(--color-accent) !important;
}

.nav-cta::after {
    display: none;
}

/* ===== Language Switch ===== */
.lang-switch {
    display: flex;
    align-items: center;
    gap: 0.15rem;
    margin-left: 0.5rem;
}

.lang-btn {
    background: none;
    border: none;
    font-size: 0.85rem;
    color: var(--color-text-muted);
    cursor: pointer;
    padding: 0.3rem 0.5rem;
    font-weight: 500;
    transition: var(--transition-fast);
    font-family: inherit;
}

.lang-btn:hover {
    color: var(--color-accent);
}

.lang-btn.active {
    color: var(--color-accent);
    font-weight: 700;
}

.lang-divider {
    color: var(--color-text-muted);
    font-size: 0.8rem;
}

/* ===== Mobile menu toggle ===== */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 0.5rem;
}

.menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-primary);
    transition: var(--transition-fast);
    display: block;
}

.menu-toggle.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ===== Hero ===== */
.hero {
    height: 100vh;
    min-height: 600px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    margin-top: 0;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 0;
    animation: heroZoom 20s ease-in-out infinite alternate;
}

@keyframes heroZoom {
    0% { transform: scale(1); }
    100% { transform: scale(1.1); }
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(15, 25, 35, 0.85) 0%, rgba(26, 35, 50, 0.7) 100%);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: var(--color-white);
    max-width: 800px;
    padding: 0 2rem;
    animation: heroFadeIn 1.2s ease-out;
}

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

.hero-content .hero-tagline {
    font-size: 0.85rem;
    letter-spacing: 6px;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: 1.5rem;
    font-weight: 500;
}

.hero-content h1 {
    color: var(--color-white);
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    letter-spacing: 2px;
}

.hero-content .hero-subtitle {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 2.5rem;
    font-weight: 300;
    line-height: 1.8;
}

.hero-content .hero-en {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.5);
    letter-spacing: 4px;
    margin-bottom: 2.5rem;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.85rem 2.2rem;
    font-size: 0.95rem;
    font-weight: 500;
    border-radius: 4px;
    cursor: pointer;
    transition: var(--transition-fast);
    border: none;
    letter-spacing: 1px;
}

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

.btn-primary:hover {
    background: var(--color-accent-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(197, 165, 90, 0.4);
}

.btn-outline {
    background: transparent;
    color: var(--color-white);
    border: 1px solid rgba(255, 255, 255, 0.4);
}

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

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

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

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.75rem;
    letter-spacing: 2px;
    animation: scrollBounce 2s ease-in-out infinite;
}

.scroll-indicator span {
    display: block;
    text-align: center;
    margin-bottom: 0.5rem;
}

.scroll-indicator .arrow {
    width: 1px;
    height: 30px;
    background: rgba(255, 255, 255, 0.3);
    margin: 0 auto;
    position: relative;
}

.scroll-indicator .arrow::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 6px;
    height: 6px;
    border-right: 1px solid rgba(255, 255, 255, 0.6);
    border-bottom: 1px solid rgba(255, 255, 255, 0.6);
    transform: translateX(-50%) rotate(45deg);
}

@keyframes scrollBounce {
    0%, 100% { transform: translateX(-50%) translateY(0); opacity: 0.6; }
    50% { transform: translateX(-50%) translateY(8px); opacity: 1; }
}

/* ===== Page Banner (inner pages) ===== */
.page-banner {
    height: 50vh;
    min-height: 380px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    margin-top: var(--header-height);
}

.page-banner-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 0;
}

.page-banner-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(15, 25, 35, 0.88) 0%, rgba(26, 35, 50, 0.75) 100%);
    z-index: 1;
}

.page-banner-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: var(--color-white);
    padding: 0 2rem;
    animation: heroFadeIn 0.8s ease-out;
}

.page-banner-content h1 {
    color: var(--color-white);
    font-size: 2.8rem;
    margin-bottom: 0.8rem;
    letter-spacing: 2px;
}

.page-banner-content .banner-en {
    font-size: 0.85rem;
    color: var(--color-accent);
    letter-spacing: 4px;
    text-transform: uppercase;
}

.breadcrumb {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 1.5rem;
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.6);
}

.breadcrumb a:hover {
    color: var(--color-accent);
}

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

/* ===== Stats Section ===== */
.stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    text-align: center;
}

.stat-item {
    padding: 2rem 1rem;
    position: relative;
}

.stat-item:not(:last-child)::after {
    content: '';
    position: absolute;
    right: 0;
    top: 20%;
    height: 60%;
    width: 1px;
    background: rgba(255, 255, 255, 0.15);
}

.stat-number {
    font-size: 2.8rem;
    font-weight: 700;
    color: var(--color-accent);
    line-height: 1.2;
    font-family: "Georgia", serif;
}

.stat-label {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
    margin-top: 0.5rem;
    letter-spacing: 1px;
}

/* ===== Feature Cards ===== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--color-white);
    padding: 2.5rem 2rem;
    border-radius: 8px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border-top: 3px solid transparent;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--color-accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition);
}

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

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

.feature-icon {
    width: 56px;
    height: 56px;
    background: var(--color-primary);
    color: var(--color-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    transition: var(--transition);
}

.feature-card:hover .feature-icon {
    background: var(--color-accent);
    color: var(--color-white);
}

.feature-card h3 {
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.feature-card p {
    color: var(--color-text-light);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* ===== Services Grid ===== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.service-item {
    position: relative;
    overflow: hidden;
    border-radius: 8px;
    aspect-ratio: 4/3;
    cursor: pointer;
}

.service-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.service-item:hover img {
    transform: scale(1.08);
}

.service-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 2rem 1.5rem 1.5rem;
    background: linear-gradient(to top, rgba(15, 25, 35, 0.95) 0%, rgba(15, 25, 35, 0.6) 70%, transparent 100%);
    color: var(--color-white);
    transition: var(--transition);
}

.service-overlay h3 {
    color: var(--color-white);
    margin-bottom: 0.5rem;
    font-size: 1.15rem;
}

.service-overlay p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.85rem;
    max-height: 0;
    overflow: hidden;
    transition: var(--transition);
}

.service-item:hover .service-overlay p {
    max-height: 100px;
    margin-top: 0.3rem;
}

.service-number {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 36px;
    height: 36px;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-size: 0.85rem;
    font-weight: 600;
    font-family: "Georgia", serif;
}

/* ===== Project Showcase ===== */
.project-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.project-card {
    position: relative;
    overflow: hidden;
    border-radius: 8px;
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    background: var(--color-white);
}

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

.project-image {
    aspect-ratio: 16/10;
    overflow: hidden;
    position: relative;
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.project-card:hover .project-image img {
    transform: scale(1.06);
}

.project-tag {
    position: absolute;
    top: 1rem;
    left: 1rem;
    padding: 0.3rem 0.8rem;
    background: rgba(197, 165, 90, 0.9);
    color: var(--color-white);
    font-size: 0.75rem;
    border-radius: 3px;
    letter-spacing: 1px;
}

.project-info {
    padding: 1.5rem;
}

.project-info h3 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.project-info .project-location {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.project-info .project-desc {
    font-size: 0.9rem;
    color: var(--color-text-light);
    margin-top: 0.8rem;
    line-height: 1.6;
}

/* ===== About / Timeline ===== */
.about-intro {
    display: grid;
    grid-template-columns: 1fr;
    gap: 4rem;
    align-items: center;
}

.about-intro .about-text {
    max-width: 900px;
    margin: 0 auto;
}

.about-intro .about-text h2 {
    margin-bottom: 1.5rem;
}

.about-intro .about-text p {
    color: var(--color-text-light);
    margin-bottom: 1rem;
    line-height: 1.9;
}

.business-structure-diagram {
    text-align: center;
    background: var(--color-white);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

.business-structure-diagram img {
    width: 100%;
    max-width: 1200px;
    height: auto;
    display: block;
    margin: 0 auto;
    transition: var(--transition);
}

.business-structure-diagram:hover img {
    transform: scale(1.02);
}

/* ===== Qualification List ===== */
.qual-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.qual-item {
    display: flex;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--color-white);
    border-radius: 8px;
    box-shadow: var(--shadow-sm);
    border-left: 3px solid var(--color-accent);
    transition: var(--transition);
}

.qual-item:hover {
    transform: translateX(4px);
    box-shadow: var(--shadow-md);
}

.qual-item .qual-icon {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    background: var(--color-bg);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    color: var(--color-accent);
}

.qual-item .qual-content h4 {
    font-size: 1rem;
    margin-bottom: 0.3rem;
}

.qual-item .qual-content p {
    font-size: 0.85rem;
    color: var(--color-text-light);
}

/* ===== Award Stats ===== */
.award-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1.5rem;
}

.award-stat {
    text-align: center;
    padding: 2rem 1rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition);
}

.award-stat:hover {
    background: rgba(197, 165, 90, 0.1);
    border-color: var(--color-accent);
}

.award-stat .number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-accent);
    font-family: "Georgia", serif;
    line-height: 1.2;
}

.award-stat .label {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.7);
    margin-top: 0.5rem;
}

/* ===== Team Section ===== */
.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 2rem;
}

.team-card {
    text-align: center;
    padding: 2.5rem 1.5rem;
    background: var(--color-white);
    border-radius: 8px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

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

.team-card .team-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 1.5rem;
    background: var(--color-primary);
    color: var(--color-accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    font-weight: 700;
    font-family: "Georgia", serif;
}

.team-card h4 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.team-card .team-number {
    font-size: 1.8rem;
    color: var(--color-accent);
    font-weight: 700;
    font-family: "Georgia", serif;
    margin: 0.5rem 0;
}

.team-card p {
    font-size: 0.85rem;
    color: var(--color-text-light);
}

/* ===== Subsidiary Grid ===== */
.subsidiary-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.subsidiary-card {
    padding: 2rem;
    background: var(--color-white);
    border-radius: 8px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid var(--color-border);
}

.subsidiary-card:hover {
    border-color: var(--color-accent);
    box-shadow: var(--shadow-md);
    transform: translateY(-3px);
}

.subsidiary-card .sub-icon {
    width: 48px;
    height: 48px;
    background: var(--color-bg);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    margin-bottom: 1.2rem;
}

.subsidiary-card h4 {
    font-size: 1.05rem;
    margin-bottom: 0.8rem;
    line-height: 1.4;
}

.subsidiary-card p {
    font-size: 0.88rem;
    color: var(--color-text-light);
    line-height: 1.7;
}

/* ===== Contact Section ===== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 3rem;
}

.contact-info {
    padding: 2.5rem;
    background: var(--color-primary);
    color: var(--color-white);
    border-radius: 8px;
}

.contact-info h3 {
    color: var(--color-white);
    margin-bottom: 2rem;
    font-size: 1.4rem;
}

.contact-item {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.8rem;
    align-items: flex-start;
}

.contact-item .contact-icon {
    width: 44px;
    height: 44px;
    background: rgba(197, 165, 90, 0.15);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    flex-shrink: 0;
    color: var(--color-accent);
}

.contact-item .contact-detail h4 {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0.3rem;
    font-weight: 400;
}

.contact-item .contact-detail p {
    color: var(--color-white);
    font-size: 1rem;
    line-height: 1.6;
}

.contact-form {
    padding: 2.5rem;
    background: var(--color-white);
    border-radius: 8px;
    box-shadow: var(--shadow-sm);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    font-size: 0.9rem;
    color: var(--color-text);
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.8rem 1rem;
    border: 1px solid var(--color-border);
    border-radius: 4px;
    font-size: 0.95rem;
    font-family: inherit;
    background: var(--color-bg);
    transition: var(--transition-fast);
    color: var(--color-text);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--color-accent);
    background: var(--color-white);
    box-shadow: 0 0 0 3px rgba(197, 165, 90, 0.1);
}

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

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.form-message {
    padding: 1rem;
    border-radius: 4px;
    margin-bottom: 1rem;
    font-size: 0.9rem;
    display: none;
}

.form-message.success {
    background: #e8f5e9;
    color: #2e7d32;
    border: 1px solid #c8e6c9;
    display: block;
}

/* ===== Map Section ===== */
.map-section {
    width: 100%;
    height: 400px;
    background: var(--color-bg);
    border-radius: 8px;
    overflow: hidden;
    position: relative;
}

.map-section iframe {
    width: 100%;
    height: 100%;
    border: 0;
}

/* ===== CTA Section ===== */
.cta-section {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: var(--color-white);
    text-align: center;
    padding: 5rem 0;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('') center/cover;
    opacity: 0.1;
}

.cta-section h2 {
    color: var(--color-white);
    font-size: 2rem;
    margin-bottom: 1rem;
    position: relative;
}

.cta-section p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 2rem;
    position: relative;
}

.cta-section .btn {
    position: relative;
}

/* ===== Footer ===== */
.footer {
    background: #0f1923;
    color: rgba(255, 255, 255, 0.6);
    padding: 4rem 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-col h4 {
    color: var(--color-white);
    font-size: 1rem;
    margin-bottom: 1.5rem;
    position: relative;
    padding-bottom: 0.8rem;
}

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

.footer-col p {
    font-size: 0.88rem;
    line-height: 1.8;
    margin-bottom: 0.5rem;
}

.footer-col ul li {
    margin-bottom: 0.6rem;
}

.footer-col ul li a {
    font-size: 0.88rem;
    color: rgba(255, 255, 255, 0.6);
    transition: var(--transition-fast);
}

.footer-col ul li a:hover {
    color: var(--color-accent);
    padding-left: 4px;
}

.footer-logo {
    display: flex;
    align-items: center;
    margin-bottom: 1.5rem;
}

.footer-logo img {
    height: 46px;
    width: auto;
    flex-shrink: 0;
}

.footer-logo .logo-mark {
    width: 36px;
    height: 36px;
    background: var(--color-accent);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: 800;
    border-radius: 4px;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding: 1.5rem 0;
    text-align: center;
    font-size: 0.82rem;
}

.footer-bottom a {
    color: rgba(255, 255, 255, 0.5);
}

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

/* ===== Certificate Gallery ===== */
.certificate-gallery {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.certificate-item {
    background: var(--color-white);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid var(--color-border);
}

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

.certificate-item img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    object-position: top;
}

.certificate-item p {
    padding: 0.8rem;
    font-size: 0.8rem;
    color: var(--color-text-light);
    text-align: center;
    background: var(--color-bg);
}

/* ===== Innovation Diagram ===== */
.innovation-diagram {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 2rem;
    padding: 2rem 0;
}

.innovation-hub {
    width: 160px;
    height: 160px;
    background: var(--color-accent);
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    text-align: center;
    box-shadow: 0 0 0 15px rgba(197, 165, 90, 0.15), 0 0 0 30px rgba(197, 165, 90, 0.08);
    flex-shrink: 0;
}

.innovation-hub .hub-title {
    font-size: 1.4rem;
    font-weight: 700;
}

.innovation-hub .hub-sub {
    font-size: 0.75rem;
    opacity: 0.9;
    margin-top: 0.3rem;
}

.innovation-items {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.2rem;
    flex: 1;
    min-width: 300px;
}

.innovation-item {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 8px;
    padding: 1.5rem;
    transition: var(--transition);
}

.innovation-item:hover {
    background: rgba(255, 255, 255, 0.12);
    border-color: var(--color-accent);
    transform: translateY(-4px);
}

.innovation-item h4 {
    color: var(--color-accent);
    font-size: 1rem;
    margin-bottom: 0.8rem;
}

.innovation-item p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.85rem;
    line-height: 1.7;
}

/* ===== Animations ===== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.fade-in:nth-child(2) { transition-delay: 0.15s; }
.fade-in:nth-child(3) { transition-delay: 0.3s; }
.fade-in:nth-child(4) { transition-delay: 0.45s; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
    .project-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .about-intro {
        gap: 2rem;
    }
}

@media (max-width: 768px) {
    h1 { font-size: 2rem; }
    h2 { font-size: 1.7rem; }

    .section {
        padding: 4rem 0;
    }

    .container {
        padding: 0 1.5rem;
    }

    .nav {
        position: fixed;
        top: var(--header-height);
        left: 0;
        width: 100%;
        background: var(--color-white);
        flex-direction: column;
        padding: 1rem 0;
        gap: 0;
        transform: translateY(-150%);
        transition: var(--transition);
        box-shadow: var(--shadow-md);
        border-top: 1px solid var(--color-border);
    }

    .nav.active {
        transform: translateY(0);
    }

    .nav a {
        width: 100%;
        text-align: center;
        padding: 0.8rem;
    }

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

    .nav-cta {
        margin: 0.8rem auto 0;
    }

    .lang-switch {
        position: absolute;
        top: 1.2rem;
        right: 4rem;
    }

    .menu-toggle {
        display: flex;
    }

    .hero-content h1 {
        font-size: 2.2rem;
    }

    .hero-content .hero-subtitle {
        font-size: 1rem;
    }

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

    .stat-item:not(:last-child)::after {
        display: none;
    }

    .stat-number {
        font-size: 2.2rem;
    }

    .about-intro {
        grid-template-columns: 1fr;
    }

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

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

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

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

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .page-banner-content h1 {
        font-size: 2rem;
    }

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

    .innovation-items {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 1.8rem;
    }

    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }

    .hero-buttons .btn {
        width: 100%;
        justify-content: center;
    }

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