/* ========================================
   东巴遗韵 · 文化官网样式
   风格：古老神秘 × 现代典雅
   ======================================== */

/* CSS Variables */
:root {
    /* Colors - 纳西族传统色调 */
    --color-deep-blue: #0d1929;
    --color-indigo: #1a2a4a;
    --color-slate: #2d3e5f;
    --color-gold: #c9a962;
    --color-gold-light: #e5d4a1;
    --color-paper: #f5f2eb;
    --color-paper-dark: #e8e3d9;
    --color-ink: #1a1a1a;
    --color-ink-light: #3a3a3a;
    --color-white: #ffffff;

    /* Typography */
    --font-display: 'ZCOOL XiaoWei', serif;
    --font-body: 'Noto Serif SC', serif;

    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 2rem;
    --space-lg: 4rem;
    --space-xl: 8rem;

    /* Transitions */
    --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
    --ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

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

body {
    font-family: var(--font-body);
    background-color: var(--color-paper);
    color: var(--color-ink);
    line-height: 1.8;
    overflow-x: hidden;
}

/* Selection */
::selection {
    background: var(--color-gold);
    color: var(--color-deep-blue);
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-paper-dark);
}

::-webkit-scrollbar-thumb {
    background: var(--color-slate);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-indigo);
}

/* ========================================
   Navigation
   ======================================== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--space-sm) var(--space-md);
    transition: all 0.4s var(--ease-smooth);
}

.nav.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-display);
    font-size: 1.4rem;
    text-decoration: none;
    color: var(--color-paper);
    letter-spacing: 0.1em;
    transition: color 0.3s;
}

.nav.scrolled .logo {
    color: var(--color-deep-blue);
}

.nav-links {
    display: flex;
    gap: var(--space-md);
}

.nav-link {
    position: relative;
    text-decoration: none;
    color: var(--color-paper);
    font-size: 0.9rem;
    letter-spacing: 0.05em;
    padding: var(--space-xs) 0;
    transition: color 0.3s var(--ease-smooth);
}

.nav.scrolled .nav-link {
    color: var(--color-ink);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-gold);
    transition: width 0.3s var(--ease-smooth);
}

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

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

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-paper);
    transition: all 0.3s var(--ease-smooth);
}

.nav.scrolled .nav-toggle span {
    background: var(--color-ink);
}

/* Mobile Menu */
.mobile-menu {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-deep-blue);
    z-index: 999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s var(--ease-smooth);
}

.mobile-menu.active {
    opacity: 1;
    visibility: visible;
}

.mobile-menu-content {
    text-align: center;
}

.mobile-link {
    display: block;
    font-family: var(--font-display);
    font-size: 2rem;
    color: var(--color-paper);
    text-decoration: none;
    padding: var(--space-sm);
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.4s var(--ease-smooth);
}

.mobile-menu.active .mobile-link {
    opacity: 1;
    transform: translateY(0);
}

.mobile-menu.active .mobile-link:nth-child(1) { transition-delay: 0.1s; }
.mobile-menu.active .mobile-link:nth-child(2) { transition-delay: 0.2s; }
.mobile-menu.active .mobile-link:nth-child(3) { transition-delay: 0.3s; }
.mobile-menu.active .mobile-link:nth-child(4) { transition-delay: 0.4s; }
.mobile-menu.active .mobile-link:nth-child(5) { transition-delay: 0.5s; }

.mobile-link:hover {
    color: var(--color-gold);
}

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

.hero-bg {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        135deg,
        var(--color-deep-blue) 0%,
        var(--color-indigo) 50%,
        var(--color-slate) 100%
    );
}

/* Floating Characters */
.floating-characters {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.float-char {
    position: absolute;
    left: var(--x);
    top: var(--y);
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 4rem);
    color: rgba(201, 169, 98, 0.12);
    animation: float 10s ease-in-out infinite;
    animation-delay: calc(var(--delay) * 0.5s);
}

@keyframes float {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
    }
    50% {
        transform: translateY(-30px) rotate(5deg);
    }
}

/* Ink Wash Effect */
.ink-wash {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 20% 30%, rgba(201, 169, 98, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 70%, rgba(201, 169, 98, 0.06) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, rgba(255, 255, 255, 0.03) 0%, transparent 40%);
    opacity: 0.8;
}

/* Hero Content */
.hero-content {
    position: relative;
    z-index: 10;
    text-align: center;
    padding: var(--space-md);
    max-width: 900px;
}

.hero-badge {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
    color: var(--color-gold);
    font-size: 0.85rem;
    letter-spacing: 0.2em;
    animation: fadeInUp 0.8s var(--ease-smooth) both;
}

.badge-line {
    width: 40px;
    height: 1px;
    background: var(--color-gold);
}

.hero-title {
    margin-bottom: var(--space-md);
    animation: fadeInUp 0.8s var(--ease-smooth) 0.2s both;
}

.title-line {
    display: block;
    font-family: var(--font-display);
    font-size: clamp(3rem, 10vw, 7rem);
    color: var(--color-paper);
    letter-spacing: 0.15em;
    line-height: 1.2;
    text-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.title-sub {
    display: block;
    font-family: var(--font-display);
    font-size: clamp(1.2rem, 3vw, 1.8rem);
    color: var(--color-gold);
    letter-spacing: 0.3em;
    margin-top: var(--space-xs);
}

.hero-desc {
    font-size: clamp(1rem, 2vw, 1.15rem);
    color: var(--color-paper);
    opacity: 0.9;
    margin-bottom: var(--space-lg);
    line-height: 2;
    animation: fadeInUp 0.8s var(--ease-smooth) 0.4s both;
}

.hero-actions {
    display: flex;
    gap: var(--space-sm);
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s var(--ease-smooth) 0.6s both;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: 1rem 2rem;
    font-family: var(--font-body);
    font-size: 0.95rem;
    letter-spacing: 0.1em;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: all 0.3s var(--ease-smooth);
}

.btn-primary {
    background: var(--color-gold);
    color: var(--color-deep-blue);
}

.btn-primary:hover {
    background: var(--color-gold-light);
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(201, 169, 98, 0.4);
}

.btn-primary svg {
    transition: transform 0.3s var(--ease-smooth);
}

.btn-primary:hover svg {
    transform: translateX(4px);
}

.btn-outline {
    background: transparent;
    color: var(--color-paper);
    border: 1px solid var(--color-paper);
}

.btn-outline:hover {
    background: var(--color-paper);
    color: var(--color-deep-blue);
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: var(--space-md);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
    color: var(--color-paper);
    opacity: 0.6;
    font-size: 0.8rem;
    letter-spacing: 0.1em;
    animation: fadeInUp 0.8s var(--ease-smooth) 1s both;
}

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

@keyframes scrollPulse {
    0%, 100% { transform: scaleY(1); opacity: 1; }
    50% { transform: scaleY(0.6); opacity: 0.5; }
}

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

/* ========================================
   Section Common Styles
   ======================================== */
.section-header {
    text-align: center;
    padding: var(--space-xl) var(--space-md) var(--space-lg);
}

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

.section-label {
    display: block;
    font-size: 0.75rem;
    letter-spacing: 0.3em;
    color: var(--color-gold);
    margin-bottom: var(--space-sm);
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3.5rem);
    letter-spacing: 0.1em;
    margin-bottom: var(--space-sm);
}

.section-subtitle {
    font-size: 1rem;
    color: var(--color-ink-light);
    max-width: 600px;
    margin: 0 auto;
}

.section-header.light .section-subtitle {
    color: rgba(255, 255, 255, 0.7);
}

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

.about-intro {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md) var(--space-lg);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
    align-items: center;
}

.intro-para {
    font-size: 1.1rem;
    margin-bottom: var(--space-md);
    line-height: 2.2;
}

.highlight {
    color: var(--color-indigo);
    font-weight: 600;
    position: relative;
}

.highlight::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 0;
    right: 0;
    height: 8px;
    background: rgba(201, 169, 98, 0.3);
    z-index: -1;
}

.intro-gallery {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.gallery-main {
    border-radius: 4px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
}

.main-img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.5s var(--ease-smooth);
}

.gallery-main:hover .main-img {
    transform: scale(1.02);
}

.gallery-thumbs {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xs);
}

.thumb-img {
    width: 100%;
    height: 100px;
    object-fit: cover;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s var(--ease-smooth);
    filter: grayscale(30%);
}

.thumb-img:hover {
    filter: grayscale(0%);
    transform: scale(1.05);
}

/* ========================================
   Culture Section - 六大板块
   ======================================== */
.culture {
    background: var(--color-paper-dark);
}

.culture-sections {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-md) var(--space-xl);
}

.culture-block {
    padding: var(--space-lg) 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.culture-block:last-child {
    border-bottom: none;
}

.culture-block.alt {
    background: var(--color-paper);
    margin: 0 calc(-1 * var(--space-md));
    padding: var(--space-lg) var(--space-md);
}

.block-header {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
}

.block-number {
    font-family: var(--font-display);
    font-size: 4rem;
    color: var(--color-gold);
    opacity: 0.3;
    line-height: 1;
}

.block-title {
    font-family: var(--font-display);
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    color: var(--color-deep-blue);
    letter-spacing: 0.1em;
}

.block-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--space-lg);
    align-items: start;
}

.block-content.reverse {
    grid-template-columns: 1.5fr 1fr;
}

.block-text {
    padding-right: var(--space-md);
}

.block-content.reverse .block-text {
    padding-right: 0;
    padding-left: var(--space-md);
    order: 2;
}

.block-text p {
    font-size: 1rem;
    line-height: 2;
    margin-bottom: var(--space-md);
    color: var(--color-ink-light);
}

.block-tags {
    display: flex;
    gap: var(--space-xs);
    flex-wrap: wrap;
}

.block-tags span {
    padding: 6px 16px;
    background: var(--color-deep-blue);
    color: var(--color-gold);
    font-size: 0.8rem;
    letter-spacing: 0.1em;
}

.culture-block.alt .block-tags span {
    background: var(--color-slate);
}

.block-images {
    overflow: hidden;
}

/* Image Grids */
.image-grid {
    display: grid;
    gap: var(--space-xs);
}

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

.image-grid.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.image-grid.grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

/* Stacked Image Layout */
.image-stack {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.stack-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-sm);
}

.stack-row .culture-img {
    aspect-ratio: 4/3;
    object-fit: cover;
}

/* Single Image */
.single-image {
    width: 100%;
}

.single-image .culture-img {
    width: 100%;
    aspect-ratio: 4/3;
    object-fit: cover;
    border-radius: 4px;
}

.culture-img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 4px;
    transition: all 0.5s var(--ease-smooth);
    cursor: pointer;
}

.image-grid.grid-2 .culture-img {
    aspect-ratio: 4/3;
    object-fit: cover;
}

.image-grid.grid-3 .culture-img {
    aspect-ratio: 1;
    object-fit: cover;
}

.culture-img:hover {
    transform: scale(1.03);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

/* ========================================
   Products Section
   ======================================== */
.products {
    background: var(--color-paper);
}

.product-category {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-md) var(--space-lg);
}

.category-title {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-family: var(--font-display);
    font-size: clamp(1.3rem, 3vw, 1.8rem);
    margin-bottom: var(--space-xs);
    color: var(--color-deep-blue);
}

.category-icon {
    width: 36px;
    height: 36px;
    background: var(--color-indigo);
    color: var(--color-gold);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
}

.category-desc {
    color: var(--color-ink-light);
    margin-bottom: var(--space-md);
    font-size: 0.95rem;
}

/* Stamps Grid */
.stamps-showcase {
    margin-bottom: var(--space-lg);
}

.stamps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: var(--space-sm);
}

.stamp-card {
    position: relative;
    background: var(--color-white);
    border: 1px solid var(--color-paper-dark);
    overflow: hidden;
    transition: all 0.4s var(--ease-smooth);
}

.stamp-card img {
    width: 100%;
    aspect-ratio: 3/4;
    object-fit: cover;
    display: block;
    transition: transform 0.5s var(--ease-smooth);
}

.stamp-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
    border-color: var(--color-gold);
}

.stamp-card:hover img {
    transform: scale(1.05);
}

.stamp-info {
    padding: var(--space-sm);
    text-align: center;
    background: var(--color-paper);
}

.stamp-name {
    display: block;
    font-family: var(--font-display);
    font-size: 0.9rem;
    color: var(--color-deep-blue);
}

.stamp-char {
    display: block;
    font-size: 1.5rem;
    color: var(--color-gold);
    margin-top: 2px;
}

/* Products Grid */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: var(--space-md);
}

.product-card {
    background: var(--color-white);
    border: 1px solid var(--color-paper-dark);
    overflow: hidden;
    transition: all 0.4s var(--ease-smooth);
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
    border-color: transparent;
}

.product-image {
    aspect-ratio: 1;
    overflow: hidden;
    background: var(--color-paper);
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s var(--ease-smooth);
}

.product-card:hover .product-image img {
    transform: scale(1.05);
}

.product-info {
    padding: var(--space-md);
    text-align: center;
}

.product-info h4 {
    font-family: var(--font-display);
    font-size: 1.1rem;
    margin-bottom: var(--space-xs);
    color: var(--color-deep-blue);
}

.product-info p {
    font-size: 0.85rem;
    color: var(--color-ink-light);
}

/* ========================================
   Digital Section
   ======================================== */
.digital {
    position: relative;
    background: var(--color-deep-blue);
    overflow: hidden;
}

.digital-bg {
    position: absolute;
    inset: 0;
}

.digital-pattern {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(201, 169, 98, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(201, 169, 98, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
}

.digital-content {
    position: relative;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md) var(--space-xl);
}

.digital-feature {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
    align-items: center;
    margin-bottom: var(--space-lg);
}

.feature-visual {
    display: flex;
    justify-content: center;
}

.phone-mockups {
    display: flex;
    gap: var(--space-sm);
    align-items: flex-end;
}

.phone-mockup {
    width: 200px;
    height: 400px;
    background: #1a1a1a;
    border-radius: 30px;
    padding: 8px;
    box-shadow:
        0 40px 80px rgba(0, 0, 0, 0.4),
        inset 0 0 0 2px rgba(255, 255, 255, 0.1);
    overflow: hidden;
}

.phone-mockup.small {
    width: 160px;
    height: 320px;
    border-radius: 24px;
}

.phone-mockup img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 22px;
}

.phone-mockup.small img {
    border-radius: 16px;
}

.feature-info {
    color: var(--color-paper);
}

.feature-badge {
    display: inline-block;
    padding: 4px 16px;
    background: var(--color-gold);
    color: var(--color-deep-blue);
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-sm);
}

.feature-title {
    font-family: var(--font-display);
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    margin-bottom: var(--space-md);
    letter-spacing: 0.1em;
}

.feature-desc {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: var(--space-md);
    line-height: 1.8;
}

.feature-list {
    list-style: none;
}

.feature-list li {
    position: relative;
    padding-left: var(--space-md);
    margin-bottom: var(--space-xs);
    color: rgba(255, 255, 255, 0.8);
}

.feature-list li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--color-gold);
}

/* Digital Gallery */
.digital-gallery {
    margin-bottom: var(--space-lg);
}

.gallery-title {
    font-family: var(--font-display);
    font-size: 1.2rem;
    color: var(--color-gold);
    text-align: center;
    margin-bottom: var(--space-md);
    letter-spacing: 0.1em;
}

.screens-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-sm);
}

.screen-img {
    width: 100%;
    height: auto;
    border-radius: 8px;
    transition: all 0.3s var(--ease-smooth);
    cursor: pointer;
}

.screen-img:hover {
    transform: scale(1.02);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

/* Digital Cards */
.digital-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
}

.tech-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: var(--space-md);
    text-align: center;
    transition: all 0.4s var(--ease-smooth);
}

.tech-card:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--color-gold);
    transform: translateY(-4px);
}

.tech-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto var(--space-sm);
    color: var(--color-gold);
}

.tech-card h4 {
    color: var(--color-paper);
    font-family: var(--font-display);
    font-size: 1.1rem;
    margin-bottom: var(--space-xs);
}

.tech-card p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
}

/* ========================================
   Heritage Section
   ======================================== */
.heritage {
    background: var(--color-paper-dark);
}

.heritage-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md) var(--space-xl);
}

.heritage-quote {
    text-align: center;
    padding: var(--space-lg);
    background: var(--color-white);
    border-left: 4px solid var(--color-gold);
    margin-bottom: var(--space-lg);
}

.heritage-quote p {
    font-family: var(--font-display);
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    color: var(--color-deep-blue);
    margin-bottom: var(--space-sm);
}

.heritage-quote cite {
    font-style: normal;
    color: var(--color-ink-light);
    font-size: 0.9rem;
}

.heritage-pillars {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-md);
}

.pillar {
    padding: var(--space-md);
    background: var(--color-white);
    border: 1px solid var(--color-paper-dark);
    transition: all 0.3s var(--ease-smooth);
}

.pillar:hover {
    border-color: var(--color-gold);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}

.pillar-number {
    display: block;
    font-family: var(--font-display);
    font-size: 3rem;
    color: var(--color-gold);
    opacity: 0.3;
    line-height: 1;
    margin-bottom: var(--space-xs);
}

.pillar h4 {
    font-family: var(--font-display);
    font-size: 1.2rem;
    margin-bottom: var(--space-xs);
    color: var(--color-deep-blue);
}

.pillar p {
    font-size: 0.9rem;
    color: var(--color-ink-light);
    line-height: 1.7;
}

/* ========================================
   Footer
   ======================================== */
.footer {
    position: relative;
    background: var(--color-deep-blue);
    color: var(--color-paper);
    overflow: hidden;
}

.footer-content {
    position: relative;
    z-index: 10;
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--space-lg) var(--space-md);
}

.footer-main {
    padding-bottom: var(--space-lg);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-title {
    font-family: var(--font-display);
    font-size: 1.4rem;
    color: var(--color-paper);
    margin-bottom: var(--space-md);
    letter-spacing: 0.1em;
}

.footer-desc {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
    line-height: 1.8;
    max-width: 350px;
}


.footer-bottom {
    padding-top: var(--space-md);
    text-align: center;
}

.footer-icp {
    display: flex;
    justify-content: center;
    gap: var(--space-md);
    flex-wrap: wrap;
    margin-bottom: var(--space-sm);
}

.footer-icp a,
.footer-icp span {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.8rem;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-icp a:hover {
    color: var(--color-gold);
}

.footer-credits {
    color: var(--color-gold);
    opacity: 0.6;
    font-size: 0.85rem;
}

/* Footer Decoration */
.footer-decoration {
    position: absolute;
    inset: 0;
    pointer-events: none;
    overflow: hidden;
}

.deco-char {
    position: absolute;
    font-family: var(--font-display);
    font-size: 20rem;
    color: rgba(201, 169, 98, 0.03);
    line-height: 1;
}

.deco-char.left {
    top: 50%;
    left: -5%;
    transform: translateY(-50%);
}

.deco-char.right {
    top: 50%;
    right: -5%;
    transform: translateY(-50%);
}

/* ========================================
   Reveal Animation
   ======================================== */
[data-reveal] {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s var(--ease-smooth);
}

[data-reveal].revealed {
    opacity: 1;
    transform: translateY(0);
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 1024px) {
    .about-intro {
        grid-template-columns: 1fr;
    }

    .block-content,
    .block-content.reverse {
        grid-template-columns: 1fr;
    }

    .block-text {
        padding-right: 0;
    }

    .block-content.reverse .block-text {
        padding-left: 0;
        order: 0;
    }

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

    .feature-list {
        display: inline-block;
        text-align: left;
    }

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

    .footer-main {
        gap: var(--space-md);
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .nav-toggle {
        display: flex;
    }

    .hero-actions {
        flex-direction: column;
    }

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

    .image-grid.grid-2,
    .image-grid.grid-3,
    .image-grid.grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .digital-cards {
        grid-template-columns: 1fr;
    }

    
    .phone-mockups {
        flex-direction: column;
        align-items: center;
    }

    .phone-mockup.small {
        display: none;
    }
}

@media (max-width: 480px) {
    :root {
        --space-md: 1.5rem;
        --space-lg: 3rem;
        --space-xl: 5rem;
    }

    .block-number {
        font-size: 2.5rem;
    }

    .title-sub {
        letter-spacing: 0.15em;
    }

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

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

    .image-grid.grid-2,
    .image-grid.grid-3,
    .image-grid.grid-4 {
        grid-template-columns: 1fr;
    }

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

    .footer-icp {
        flex-direction: column;
        gap: var(--space-xs);
    }
}