/* ============================================================
   DAI TIAN INTELLIGENT TECHNOLOGY — Brand Website Styles
   Focus: Energy Storage | Custom Solutions
   ============================================================ */

/* --- CSS Custom Properties --- */
:root {
    /* Color System */
    --color-bg: #f8fafc;
    --color-bg-dark: #0a1628;
    --color-bg-card: #ffffff;
    --color-bg-glass: rgba(255, 255, 255, 0.85);
    --color-text: #1e293b;
    --color-text-light: #64748b;
    --color-text-dark-bg: #e2e8f0;
    --color-text-dark-muted: #94a3b8;
    --color-primary: #00d4aa;
    --color-primary-dark: #00b894;
    --color-primary-glow: rgba(0, 212, 170, 0.15);
    --color-accent: #3b82f6;
    --color-accent-glow: rgba(59, 130, 246, 0.12);
    --color-border: #e2e8f0;
    --color-border-dark: rgba(255, 255, 255, 0.08);
    --color-gradient-1: linear-gradient(135deg, #0a1628 0%, #1a2744 50%, #0f1f38 100%);
    --color-gradient-2: linear-gradient(135deg, #00d4aa 0%, #3b82f6 100%);
    --color-gradient-3: linear-gradient(135deg, rgba(0,212,170,0.08) 0%, rgba(59,130,246,0.08) 100%);

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;

    /* Spacing */
    --header-h: 88px;
    --section-py: 120px;
    --container-max: 1200px;

    /* Radius */
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -2px rgba(0,0,0,0.05);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -4px rgba(0,0,0,0.04);
    --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1), 0 8px 10px -6px rgba(0,0,0,0.04);
    --shadow-glow: 0 0 40px var(--color-primary-glow);

    /* Transitions */
    --transition-fast: 200ms ease;
    --transition-base: 300ms ease;
    --transition-slow: 500ms ease;
}

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

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

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.7;
    color: var(--color-text);
    background: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

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

ul { list-style: none; }

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

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

/* --- Container --- */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
}

/* --- Section --- */
.section {
    padding: var(--section-py) 0;
}

.section--dark {
    background: var(--color-gradient-1);
    color: var(--color-text-dark-bg);
}

.section-header {
    text-align: center;
    margin-bottom: 72px;
}

.section-tag {
    display: inline-block;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--color-primary-dark);
    background: var(--color-primary-glow);
    padding: 6px 16px;
    border-radius: 20px;
    margin-bottom: 20px;
}

.section--dark .section-tag {
    color: var(--color-primary);
    background: rgba(0, 212, 170, 0.1);
}

.section-title {
    font-size: clamp(28px, 5vw, 48px);
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.2;
    margin-bottom: 16px;
    color: var(--color-text);
}

.section--dark .section-title {
    color: #fff;
}

.section-subtitle {
    font-size: 18px;
    color: var(--color-text-light);
    max-width: 560px;
    margin: 0 auto;
}

.section--dark .section-subtitle {
    color: var(--color-text-dark-muted);
}

/* --- Glass Card --- */
.glass-card {
    background: var(--color-bg-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-lg);
    padding: 40px;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

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

/* ============================================================
   HEADER
   ============================================================ */

.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-h);
    z-index: 1000;
    transition: background var(--transition-base), box-shadow var(--transition-base);
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: var(--shadow-sm);
    border-bottom: 1px solid var(--color-border);
}

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

.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.logo-img {
    height: 80px;
    width: auto;
    display: block;
    object-fit: contain;
    object-position: center;
    filter: brightness(0) invert(1);
}

.header.scrolled .logo-img {
    filter: none;
}

.footer-logo-img {
    height: 40px;
    width: auto;
    display: block;
    filter: brightness(0) invert(1);
}

/* --- Nav --- */
.nav-list {
    display: flex;
    gap: 8px;
}

.nav-link {
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.85);
    transition: color var(--transition-fast), background var(--transition-fast);
}

.header.scrolled .nav-link {
    color: var(--color-text-light);
}

.nav-link:hover,
.nav-link.active {
    color: #fff;
    background: rgba(255, 255, 255, 0.1);
}

.header.scrolled .nav-link:hover,
.header.scrolled .nav-link.active {
    color: var(--color-accent);
    background: rgba(59, 130, 246, 0.08);
}

/* --- Header Actions --- */
.header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.lang-toggle {
    display: flex;
    align-items: center;
    gap: 2px;
    font-size: 13px;
    font-weight: 600;
    padding: 6px 10px;
    border-radius: var(--radius-sm);
    color: rgba(255, 255, 255, 0.7);
    transition: color var(--transition-fast), background var(--transition-fast);
}

.header.scrolled .lang-toggle {
    color: var(--color-text-light);
}

.lang-toggle:hover {
    background: rgba(255, 255, 255, 0.1);
}

.lang-toggle .active {
    color: var(--color-primary);
}

.header.scrolled .lang-toggle .active {
    color: var(--color-accent);
}

.lang-divider {
    opacity: 0.4;
}

/* --- Mobile Menu Toggle --- */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 4px;
    z-index: 1001;
}

.menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: #fff;
    border-radius: 2px;
    transition: transform var(--transition-base), opacity var(--transition-base), background var(--transition-base);
}

.header.scrolled .menu-toggle span {
    background: var(--color-text);
}

.menu-toggle.active span {
    background: var(--color-text);
}

.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 {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-gradient-1);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.hero-bg::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url('../images/banner-q90.webp') center / cover no-repeat;
    opacity: 0.45;
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black 30%, transparent 70%);
}

.hero-glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.3;
}

.hero-glow--1 {
    width: 600px;
    height: 600px;
    background: var(--color-primary);
    top: -200px;
    right: -100px;
    animation: floatGlow 8s ease-in-out infinite;
}

.hero-glow--2 {
    width: 400px;
    height: 400px;
    background: var(--color-accent);
    bottom: -100px;
    left: -50px;
    animation: floatGlow 10s ease-in-out infinite reverse;
}

@keyframes floatGlow {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -30px) scale(1.1); }
    66% { transform: translate(-20px, 20px) scale(0.9); }
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 120px 24px 80px;
}

.hero-tagline {
    display: inline-block;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 4px;
    text-transform: uppercase;
    color: var(--color-primary);
    background: rgba(0, 212, 170, 0.1);
    padding: 8px 20px;
    border-radius: 24px;
    margin-bottom: 32px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(0, 212, 170, 0.15);
}

.hero-title {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 28px;
}

.hero-title-line {
    font-size: clamp(36px, 7vw, 72px);
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.1;
    color: #fff;
}

.hero-title-line--accent {
    background: var(--color-gradient-2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-desc {
    font-size: 18px;
    color: var(--color-text-dark-muted);
    max-width: 640px;
    margin: 0 auto 48px;
    line-height: 1.8;
}

.hero-cta {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    font-size: 15px;
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    white-space: nowrap;
}

.btn-primary {
    background: var(--color-gradient-2);
    color: #fff;
    box-shadow: 0 4px 20px rgba(0, 212, 170, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 212, 170, 0.4);
}

.btn-outline {
    border: 1.5px solid rgba(255, 255, 255, 0.3);
    color: #fff;
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
}

.btn-outline:hover {
    border-color: rgba(255, 255, 255, 0.6);
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

/* --- Hero Scroll Indicator --- */
.hero-scroll {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: rgba(255, 255, 255, 0.4);
    font-size: 12px;
    letter-spacing: 1px;
    animation: bounceDown 2s ease-in-out infinite;
}

@keyframes bounceDown {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(8px); }
}

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

.about-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.about-card {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.about-icon {
    width: 72px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    background: var(--color-gradient-3);
    color: var(--color-primary-dark);
    transition: all var(--transition-base);
}

.about-card:hover .about-icon {
    background: var(--color-gradient-2);
    color: #fff;
    transform: scale(1.05);
}

.about-card h3 {
    font-size: 20px;
    font-weight: 700;
}

.about-card p {
    font-size: 15px;
    color: var(--color-text-light);
    line-height: 1.8;
}

/* ============================================================
   BUSINESS SECTION
   ============================================================ */

.business-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.business-card {
    position: relative;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--color-border-dark);
    border-radius: var(--radius-lg);
    padding: 40px 32px;
    overflow: hidden;
    transition: transform var(--transition-base), border-color var(--transition-base);
    display: flex;
    flex-direction: column;
}

.business-card:hover {
    transform: translateY(-6px);
    border-color: rgba(0, 212, 170, 0.3);
}

.business-card-bg {
    position: absolute;
    inset: 0;
    opacity: 0;
    background: radial-gradient(ellipse at top left, rgba(0,212,170,0.06) 0%, transparent 60%);
    transition: opacity var(--transition-slow);
}

.business-card:hover .business-card-bg {
    opacity: 1;
}

.business-card-content {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    gap: 20px;
    flex: 1;
}

.business-card-icon {
    color: var(--color-primary);
    transition: transform var(--transition-base);
}

.business-card:hover .business-card-icon {
    transform: scale(1.1);
}

.business-card h3 {
    font-size: 24px;
    font-weight: 700;
    color: #fff;
}

.business-card p {
    font-size: 15px;
    color: var(--color-text-dark-muted);
    line-height: 1.8;
    flex: 1;
}

.business-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    padding-top: 16px;
    border-top: 1px solid var(--color-border-dark);
}

.business-features li {
    font-size: 13px;
    color: var(--color-text-dark-muted);
    display: flex;
    align-items: center;
    gap: 8px;
}

.business-features li::before {
    content: '';
    display: block;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--color-primary);
    flex-shrink: 0;
}

.business-card-pattern {
    position: absolute;
    top: -40px;
    right: -40px;
    width: 120px;
    height: 120px;
    border: 1px solid rgba(255, 255, 255, 0.04);
    border-radius: 50%;
    pointer-events: none;
}

/* ============================================================
   ADVANTAGES SECTION
   ============================================================ */

.adv-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
    max-width: 900px;
    margin: 0 auto;
}

.adv-item {
    display: flex;
    gap: 24px;
    padding: 32px;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    transition: all var(--transition-base);
    background: var(--color-bg-card);
}

.adv-item:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-lg);
}

.adv-number {
    font-family: var(--font-mono);
    font-size: 40px;
    font-weight: 700;
    letter-spacing: -0.02em;
    background: var(--color-gradient-2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    flex-shrink: 0;
}

.adv-content h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 8px;
}

.adv-content p {
    font-size: 15px;
    color: var(--color-text-light);
    line-height: 1.8;
}

/* ============================================================
   PARTNERS SECTION
   ============================================================ */

.partners-strip {
    width: 100%;
    padding: 4px 24px;
}

.partners-track {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 28px;
    align-items: center;
    justify-items: center;
    max-width: var(--container-max);
    margin: 0 auto;
}

.partner-logo-img {
    width: 100%;
    height: auto;
    aspect-ratio: auto;
    object-fit: contain;
    padding: 24px 20px;
    background: #f8fafc;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: box-shadow var(--transition-base), border-color var(--transition-base);
    box-sizing: border-box;
}

.partner-logo-img:hover {
    box-shadow: 0 0 0 2px var(--color-primary), var(--shadow-lg);
    border-color: var(--color-primary);
}

/* --- Partners Responsive --- */
@media (max-width: 768px) {
    .partners-track {
        grid-template-columns: repeat(3, 1fr);
        gap: 20px;
    }

    .partner-logo-img {
        padding: 18px 14px;
    }
}

@media (max-width: 480px) {
    .partners-track {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }
}

/* ============================================================
   CONTACT SECTION
   ============================================================ */

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
    max-width: 900px;
    margin: 0 auto;
}

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

.contact-company h3 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 4px;
    color: #fff;
}

.contact-company-en {
    font-size: 14px;
    color: var(--color-text-dark-muted);
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 15px;
    color: var(--color-text-dark-muted);
}

.contact-item svg {
    flex-shrink: 0;
    color: var(--color-primary);
}

.contact-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 600;
    color: var(--color-primary);
    background: rgba(0, 212, 170, 0.08);
    padding: 10px 20px;
    border-radius: var(--radius-sm);
    border: 1px solid rgba(0, 212, 170, 0.15);
    align-self: flex-start;
}

/* --- QR Card --- */
.contact-qr {
    display: flex;
    justify-content: center;
}

.qr-card {
    text-align: center;
    padding: 36px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    background: rgba(255, 255, 255, 0.04) !important;
    border: 1px solid var(--color-border-dark) !important;
}

.qr-placeholder {
    position: relative;
    max-width: 220px;
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: 0 0 0 8px rgba(255, 255, 255, 0.05);
    background: #fff;
}

.qr-image {
    width: 100%;
    height: auto;
    display: block;
}


.qr-label {
    font-size: 15px;
    font-weight: 600;
    color: #fff;
}

.qr-sub {
    font-size: 13px;
    color: var(--color-text-dark-muted);
}

/* ============================================================
   FOOTER
   ============================================================ */

.footer {
    background: #060f1f;
    color: var(--color-text-dark-muted);
    padding: 72px 0 32px;
    border-top: 1px solid var(--color-border-dark);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-logo {
    font-size: 22px;
    font-weight: 700;
    color: #fff;
    display: inline-block;
    margin-bottom: 12px;
}

.footer-brand p {
    font-size: 14px;
    line-height: 1.7;
    max-width: 280px;
}

.footer-links h4,
.footer-biz h4,
.footer-contact h4 {
    font-size: 14px;
    font-weight: 600;
    color: #fff;
    margin-bottom: 16px;
    letter-spacing: 0.05em;
}

.footer-links li,
.footer-biz li {
    margin-bottom: 10px;
}

.footer-links a,
.footer-biz a {
    font-size: 14px;
    color: var(--color-text-dark-muted);
    transition: color var(--transition-fast);
}

.footer-links a:hover,
.footer-biz a:hover {
    color: var(--color-primary);
}

.footer-contact p {
    font-size: 14px;
    margin-bottom: 8px;
}

.footer-bottom {
    padding-top: 32px;
    border-top: 1px solid var(--color-border-dark);
    text-align: center;
    font-size: 13px;
}

/* ============================================================
   ANIMATIONS — Intersection Observer
   ============================================================ */

.fade-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

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

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

/* Tablet */
@media (max-width: 1024px) {
    :root {
        --section-py: 80px;
    }

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

    .about-grid .about-card:last-child {
        grid-column: 1 / -1;
        max-width: 400px;
        justify-self: center;
    }

    .business-grid {
        grid-template-columns: 1fr;
        max-width: 560px;
        margin: 0 auto;
    }

    .adv-grid {
        grid-template-columns: 1fr;
        max-width: 560px;
    }

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

    .contact-badge {
        align-self: center;
    }

    .contact-item {
        justify-content: center;
    }

    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 32px;
    }
}

/* Mobile */
@media (max-width: 768px) {
    :root {
        --header-h: 64px;
        --section-py: 64px;
    }

    /* --- Mobile Nav --- */
    .nav {
        position: fixed;
        top: 16px;
        right: 16px;
        width: 260px;
        background: #fff;
        border-radius: var(--radius-lg);
        box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
        padding: 20px 0;
        opacity: 0;
        visibility: hidden;
        transform: translateY(-12px) scale(0.96);
        transition: opacity 0.25s ease, visibility 0.25s ease, transform 0.25s ease;
        z-index: 1000;
    }

    .nav.open {
        opacity: 1;
        visibility: visible;
        transform: translateY(0) scale(1);
    }

    .nav-list {
        flex-direction: column;
        align-items: stretch;
        gap: 0;
    }

    .nav-link {
        display: block;
        font-size: 16px;
        font-weight: 500;
        padding: 14px 28px;
        color: var(--color-text) !important;
        border-radius: 0;
        border-left: 3px solid transparent;
        transition: all var(--transition-fast);
    }

    .nav-link:hover,
    .nav-link.active {
        color: var(--color-primary-dark) !important;
        background: var(--color-primary-glow);
        border-left-color: var(--color-primary);
    }

    /* Mobile menu backdrop */
    .nav-backdrop {
        position: fixed;
        inset: 0;
        background: rgba(10, 22, 40, 0.3);
        backdrop-filter: blur(4px);
        -webkit-backdrop-filter: blur(4px);
        opacity: 0;
        visibility: hidden;
        transition: opacity 0.25s ease, visibility 0.25s ease;
        z-index: 999;
    }

    .nav-backdrop.show {
        opacity: 1;
        visibility: visible;
    }

    .menu-toggle {
        display: flex;
    }

    .logo-img {
        height: 56px;
    }

    /* --- Sections --- */
    .hero-content {
        padding: 100px 16px 60px;
    }

    .hero-title-line {
        font-size: clamp(28px, 10vw, 48px);
    }

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

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

    .btn {
        width: 100%;
        max-width: 280px;
    }

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

    .about-grid .about-card:last-child {
        grid-column: auto;
        max-width: none;
        justify-self: auto;
    }

    .business-card {
        padding: 32px 24px;
    }

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

    .adv-item {
        flex-direction: column;
        gap: 12px;
        padding: 24px;
    }

    .contact-grid {
        gap: 32px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
        text-align: center;
    }

    .footer-brand p {
        max-width: none;
        margin: 0 auto;
    }

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

    .section-tag {
        font-size: 12px;
    }

    .section-subtitle {
        font-size: 16px;
    }
}

/* Small Mobile */
@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .glass-card {
        padding: 28px 20px;
    }

    .hero-tagline {
        font-size: 12px;
        letter-spacing: 2px;
        padding: 6px 14px;
    }

    .qr-card {
        padding: 24px;
    }
}