:root {
    --bg-primary: #fbfbfd;
    --bg-secondary: #f5f5f7;
    --text-primary: #1d1d1f;
    --text-secondary: #86868b;
    --accent-blue: #0066cc;
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans TC", sans-serif;
    --transition-apple: cubic-bezier(0.25, 1, 0.5, 1);
}

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

body { 
    font-family: var(--font-sans); 
    background-color: var(--bg-primary); 
    color: var(--text-primary); 
    -webkit-font-smoothing: antialiased; 
    overflow-x: hidden; 
}

.global-nav { 
    position: fixed; 
    top: 0; 
    width: 100%; 
    z-index: 1000; 
    background: rgba(251, 251, 253, 0.85); 
    backdrop-filter: blur(20px); 
    -webkit-backdrop-filter: blur(20px); 
    border-bottom: 1px solid rgba(0, 0, 0, 0.04); 
}

.nav-container { 
    max-width: 1140px; 
    margin: 0 auto; 
    height: 52px; 
    display: flex; 
    justify-content: space-between; 
    align-items: center; 
    padding: 0 24px; 
}

.nav-logo { 
    font-size: 19px; 
    font-weight: 600; 
    text-decoration: none; 
    color: var(--text-primary); 
    letter-spacing: -0.5px; 
}

.menu-toggle { 
    display: none; 
    background: none; 
    border: none; 
    cursor: pointer; 
    padding: 12px; 
    flex-direction: column; 
    justify-content: center; 
    align-items: center; 
    gap: 5px; 
    z-index: 1100; 
    height: 44px; 
    width: 44px; 
}

.hamburger-line { 
    display: block; 
    width: 18px; 
    height: 2px; 
    background-color: currentColor;
    color: #1d1d1f;
    opacity: 1;
    border-radius: 999px;
    flex: 0 0 auto;
    backface-visibility: hidden;
    transform-origin: center; 
    transition: transform 0.25s var(--transition-apple), opacity 0.2s; 
}

.menu-toggle:not(.active) .hamburger-line {
    opacity: 1;
    transform: none;
}

.nav-links { 
    display: flex; 
    align-items: center; 
}

.nav-links a { 
    font-size: 13px; 
    text-decoration: none; 
    color: var(--text-secondary); 
    margin-left: 32px; 
    transition: color 0.3s var(--transition-apple); 
}

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

.hero-section { 
    position: relative; 
    width: 100%; 
    height: 100vh; 
    display: flex; 
    align-items: center; 
    justify-content: center; 
    overflow: hidden; 
}

.hero-bg-cover { 
    position: absolute; 
    top: 0; 
    left: 0; 
    width: 100%; 
    height: 100%; 
    background-size: cover; 
    background-position: center; 
    transform: scale(1.05); 
    z-index: 1; 
}

.hero-overlay { 
    position: absolute; 
    top: 0; 
    left: 0; 
    width: 100%; 
    height: 100%; 
    background: linear-gradient(180deg, rgba(251,251,253,0.1) 0%, rgba(251,251,253,0.85) 100%); 
    z-index: 2; 
}

.hero-container { 
    position: relative; 
    max-width: 1140px; 
    width: 100%; 
    margin: 0 auto; 
    padding: 0 24px; 
    z-index: 3; 
}

.hero-text-wrapper { 
    max-width: 650px; 
    text-align: left; 
}

.hero-text-wrapper h1 { 
    font-size: 64px; 
    font-weight: 700; 
    letter-spacing: -2px; 
    line-height: 1.1; 
    margin-bottom: 24px; 
    transform: translateY(40px); 
    opacity: 0; 
}

.hero-subtitle { 
    font-size: 21px; 
    color: #424245; 
    line-height: 1.55; 
    transform: translateY(40px); 
    opacity: 0; 
}

.statement-section { 
    padding: 180px 0; 
    background-color: var(--bg-secondary); 
}

.statement-container { 
    max-width: 1140px; 
    margin: 0 auto; 
    padding: 0 24px; 
    display: flex; 
    align-items: center; 
    justify-content: space-between; 
    gap: 60px; 
}

.statement-content { 
    max-width: 550px; 
}

.scroll-reveal-text { 
    font-size: 42px; 
    font-weight: 700; 
    letter-spacing: -1px; 
    line-height: 1.25; 
    margin-bottom: 24px; 
    color: #d2d2d7; 
}

.scroll-reveal-subtext { 
    font-size: 18px; 
    color: var(--text-secondary); 
    line-height: 1.65; 
}

.security-bg-wrapper { 
    flex: 1;
    max-width: 500px; 
    width: 100%; 
    min-height: auto; 
    display: flex;
    justify-content: center;
    align-items: center;
}

.security-img { 
    width: 100%; 
    height: auto; 
    display: block; 
    border-radius: 0; 
    pointer-events: none;
    -webkit-user-drag: none;
}

.expertise-section { 
    padding: 140px 0; 
    background-color: var(--bg-primary); 
}

.expertise-container { 
    max-width: 1140px; 
    margin: 0 auto; 
    padding: 0 24px; 
}

.section-header { 
    text-align: center; 
    margin-bottom: 80px; 
}

.section-tag { 
    font-size: 11px; 
    font-weight: 700; 
    color: var(--accent-blue); 
    letter-spacing: 2.5px; 
    text-transform: uppercase; 
    display: block; 
    margin-bottom: 14px; 
}

.section-header h2 { 
    font-size: 40px; 
    font-weight: 700; 
    letter-spacing: -1px; 
    margin-bottom: 18px; 
    color: var(--text-primary); 
}

.section-desc { 
    font-size: 17px; 
    color: var(--text-secondary); 
    max-width: 600px; 
    margin: 0 auto; 
    line-height: 1.6; 
}

.flex-interactive-container { 
    display: flex; 
    width: 100%; 
    gap: 16px; 
    overflow: hidden; 
    padding: 10px 0; 
}

.flex-card-item { 
    flex: 1; 
    background: #ffffff; 
    border: 1px solid rgba(0,0,0,0.04); 
    border-radius: 24px; 
    padding: 40px 32px; 
    height: 480px; 
    display: flex; 
    flex-direction: column; 
    justify-content: flex-start; 
    overflow: hidden; 
    position: relative; 
    transition: flex 0.6s var(--transition-apple), box-shadow 0.5s var(--transition-apple), border-color 0.5s var(--transition-apple); 
}

.card-default-view { 
    width: 100%; 
    min-width: 220px; 
    transition: transform 0.5s var(--transition-apple), opacity 0.4s var(--transition-apple); 
    transform-origin: top left;
}

.card-icon { 
    width: 100%; 
    height: 160px; 
    margin-bottom: 24px; 
    border-radius: 0; 
    position: relative; 
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    transition: transform 0.5s var(--transition-apple), height 0.5s var(--transition-apple);
}

.card-icon img { 
    height: 100%; 
    width: auto; 
    display: block; 
    object-fit: contain; 
    opacity: 0.85; 
    transition: transform 0.5s var(--transition-apple), opacity 0.3s;
    pointer-events: none;
    -webkit-user-drag: none;
    user-select: none;
}

.flex-card-item h3 { 
    font-size: 20px; 
    font-weight: 600; 
    margin-bottom: 12px; 
    letter-spacing: -0.3px; 
    transition: color 0.4s;
}

.card-brief-desc { 
    font-size: 14px; 
    color: var(--text-secondary); 
    line-height: 1.5; 
}

.card-expanded-view { 
    position: absolute; 
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    padding: 40px 32px;
    opacity: 0; 
    transform: translateY(15px); 
    pointer-events: none; 
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    transition: opacity 0.4s var(--transition-apple), transform 0.4s var(--transition-apple); 
}

.card-expanded-view h4 { 
    font-size: 22px; 
    font-weight: 600; 
    margin-bottom: 24px; 
    color: var(--text-primary); 
    letter-spacing: -0.5px; 
}

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

.tech-list li { 
    font-size: 14px; 
    line-height: 1.6; 
    color: #424245; 
    margin-bottom: 16px; 
    position: relative; 
    padding-left: 18px; 
    transform: translateY(10px); 
    opacity: 0; 
}

.tech-list li::before { 
    content: "•"; 
    color: var(--accent-blue); 
    position: absolute; 
    left: 0; 
    font-weight: bold; 
    font-size: 16px; 
}

.flex-card-item:hover { 
    flex: 3.5; 
    border-color: rgba(0,0,0,0.08); 
    box-shadow: 0 30px 70px rgba(0,0,0,0.05); 
}

.flex-card-item:hover .card-default-view { 
    opacity: 0; 
    transform: scale(0.9) translateY(-10px);
    pointer-events: none; 
}

.flex-card-item:hover .card-icon {
    height: 0;
    margin-bottom: 0;
}

.flex-card-item:hover .card-expanded-view { 
    opacity: 1; 
    transform: translateY(0); 
    pointer-events: auto; 
}

.flex-card-item:hover .tech-list li { 
    opacity: 1; 
    transform: translateY(0); 
    transition: opacity 0.5s var(--transition-apple), transform 0.5s var(--transition-apple); 
}

.flex-card-item:hover .tech-list li:nth-child(1) { transition-delay: 0.12s; }
.flex-card-item:hover .tech-list li:nth-child(2) { transition-delay: 0.18s; }
.flex-card-item:hover .tech-list li:nth-child(3) { transition-delay: 0.24s; }
.flex-card-item:hover .tech-list li:nth-child(4) { transition-delay: 0.30s; }

.img-load-failed {
    background-color: var(--bg-secondary) !important;
    border: 1px solid rgba(0,0,0,0.03);
    border-radius: 14px;
    width: 100%;
    height: 160px;
    display: flex !important;
    align-items: center;
    justify-content: center;
}
.img-load-failed::before {
    content: "◈"; 
    color: var(--text-secondary);
    font-size: 24px; 
}

.contact-section { 
    padding: 160px 0; 
    text-align: center; 
}

.contact-container { 
    max-width: 640px; 
    margin: 0 auto; 
    padding: 0 24px; 
}

.contact-section h2 { 
    font-size: 48px; 
    font-weight: 700; 
    letter-spacing: -1px; 
    margin-bottom: 20px; 
}

.contact-subtitle { 
    font-size: 19px; 
    color: var(--text-secondary); 
    margin-bottom: 48px; 
}

.cta-group { 
    display: flex; 
    justify-content: center; 
    gap: 24px; 
}

.cta-btn { 
    display: flex; 
    flex-direction: column; 
    align-items: center; 
    justify-content: center; 
    width: 240px; 
    padding: 18px 0; 
    border-radius: 14px; 
    text-decoration: none; 
    border: none; 
    cursor: pointer; 
    font-family: inherit; 
    transition: all 0.3s var(--transition-apple); 
}

.btn-mail { 
    background-color: var(--text-primary); 
    color: #fff; 
}

.btn-mail:hover { 
    background-color: #000; 
    transform: translateY(-2px); 
}

.btn-line { 
    background-color: transparent; 
    border: 1px solid var(--text-primary); 
    color: var(--text-primary); 
}

.btn-line:hover { 
    background-color: rgba(0,0,0,0.02); 
    transform: translateY(-2px); 
}

.btn-text { 
    font-size: 16px; 
    font-weight: 600; 
}

.btn-sub { 
    font-size: 12px; 
    opacity: 0.6; 
    margin-top: 4px; 
}

.global-footer { 
    padding: 40px 0; 
    background: var(--bg-secondary); 
    border-top: 1px solid rgba(0,0,0,0.04); 
}

.footer-container { 
    max-width: 1140px; 
    margin: 0 auto; 
    padding: 0 24px; 
    display: flex; 
    justify-content: space-between; 
    font-size: 13px; 
    color: var(--text-secondary); 
}

.footer-links a { 
    color: var(--text-secondary); 
    text-decoration: none; 
    border-bottom: 1px solid transparent; 
    transition: all 0.3s; 
}

.footer-links a:hover { 
    color: var(--text-primary); 
    border-bottom-color: var(--text-primary); 
}

#toast-notification {
    position: fixed;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    background: rgba(29, 29, 31, 0.96);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    color: #ffffff;
    padding: 14px 28px;
    border-radius: 30px;
    font-size: 14px;
    font-weight: 500;
    z-index: 3000;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    pointer-events: none;
    transition: opacity 0.4s var(--transition-apple), transform 0.4s var(--transition-apple);
}

#toast-notification.toast-show { 
    opacity: 1; 
    transform: translateX(-50%) translateY(0); 
}

#toast-notification.toast-hide { 
    opacity: 0; 
    pointer-events: none; 
}

@keyframes skeleton-blink {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

@media (max-width: 960px) {
    .menu-toggle { 
        display: flex; 
    }
    
    .nav-links { 
        position: absolute; 
        top: 52px; 
        left: 0; 
        width: 100%; 
        background: rgba(251, 251, 253, 0.98); 
        backdrop-filter: blur(20px); 
        -webkit-backdrop-filter: blur(20px); 
        border-bottom: 1px solid rgba(0,0,0,0.05); 
        flex-direction: column; 
        padding: 24px 0; 
        gap: 24px; 
        opacity: 0; 
        transform: translateY(-15px) scale(0.98); 
        pointer-events: none; 
        display: flex; 
        transition: opacity 0.35s var(--transition-apple), transform 0.35s var(--transition-apple); 
    }
    
    .nav-links.active { 
        opacity: 1; 
        transform: translateY(0) scale(1); 
        pointer-events: auto; 
    }
    
    .nav-links a { 
        margin-left: 0; 
        font-size: 16px; 
        width: 100%; 
        text-align: center; 
        padding: 8px 0; 
        transform: translateY(-10px); 
        opacity: 0; 
        transition: transform 0.35s var(--transition-apple), opacity 0.35s; 
    }
    
    .nav-links.active a { 
        transform: translateY(0); 
        opacity: 1; 
    }
    
    .nav-links.active a:nth-child(1) { transition-delay: 0.1s; }
    .nav-links.active a:nth-child(2) { transition-delay: 0.18s; }
    
    .nav-links a.nav-cta { 
        background: var(--text-primary); 
        color: #fff; 
        width: 80%; 
        max-width: 260px; 
        border-radius: 10px; 
        margin: 0 auto; 
    }
    
    .menu-toggle.active .hamburger-line:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
    .menu-toggle.active .hamburger-line:nth-child(2) { opacity: 0; }
    .menu-toggle.active .hamburger-line:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }
    
    .flex-interactive-container { 
        flex-direction: column; 
        gap: 24px; 
    }
    
    .flex-card-item { 
        height: auto; 
        padding: 40px 24px; 
        transform: none !important; 
        flex: none !important; 
    }
    
    
    .flex-card-item:hover {
        box-shadow: none; 
        border-color: rgba(0,0,0,0.04); 
    }
    
    .flex-card-item:hover .card-icon {
        height: 160px !important;
        margin-bottom: 24px !important;
    }

    .flex-card-item:hover .card-default-view { 
        opacity: 1 !important; 
        transform: none !important;
        pointer-events: auto; 
    }
    
    .card-default-view { 
        opacity: 1 !important; 
        margin-bottom: 32px; 
    }
    
    .card-icon { 
        margin-bottom: 20px; 
        height: 160px !important; 
    }
    
    .card-expanded-view { 
        position: relative; 
        top: 0; 
        left: 0; 
        right: 0; 
        padding: 0;
        opacity: 1 !important; 
        transform: none !important; 
        pointer-events: auto; 
    }
    
    .tech-list li { 
        opacity: 1 !important; 
        transform: none !important; 
    }
}

@media (max-width: 480px) {
    .hero-text-wrapper h1 { font-size: 36px; letter-spacing: -1px; }
    .hero-subtitle { font-size: 17px; line-height: 1.6; color: #1d1d1f; margin-top: 16px; }
    .hero-overlay { background: linear-gradient(180deg, rgba(251,251,253,0.3) 0%, rgba(251,251,253,0.95) 75%); }
    .statement-section { padding: 90px 0; }
    .statement-container { flex-direction: column; text-align: center; gap: 40px; }
    .scroll-reveal-text { font-size: 28px; }
    .section-header h2 { font-size: 30px; }
    .section-desc { font-size: 15px; }
    .contact-section h2 { font-size: 32px; }
    .cta-group { flex-direction: column; align-items: center; }
    .cta-btn { width: 100%; max-width: 300px; }
    .footer-container { flex-direction: column; align-items: center; gap: 12px; }
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 72px;
}

.skip-link {
    position: fixed;
    left: 24px;
    top: 12px;
    z-index: 4000;
    transform: translateY(-140%);
    background: var(--text-primary);
    color: #ffffff;
    padding: 10px 16px;
    border-radius: 999px;
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    transition: transform 0.25s var(--transition-apple);
}

.skip-link:focus {
    transform: translateY(0);
}

.nav-logo {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    min-height: 36px;
    font-size: 19px;
    font-weight: 600;
    text-decoration: none;
    color: var(--text-primary);
    letter-spacing: -0.5px;
}

.nav-logo-mark {
    width: 28px;
    height: 28px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.nav-logo-mark img {
    display: block;
    width: 28px;
    height: 28px;
}

.nav-logo-text {
    line-height: 1;
}

.hero-bg-cover {
    background-image: url('assets/hero-bg.webp');
}

a:focus-visible,
button:focus-visible,
.flex-card-item:focus-visible {
    outline: 3px solid rgba(0, 102, 204, 0.35);
    outline-offset: 4px;
    border-radius: 12px;
}

.flex-card-item:focus,
.flex-card-item:focus-within {
    outline: none;
}

@media (min-width: 961px) {
    .flex-card-item:focus-within,
    .flex-card-item:focus {
        flex: 3.5;
        border-color: rgba(0,0,0,0.08);
        box-shadow: 0 30px 70px rgba(0,0,0,0.05);
    }

    .flex-card-item:focus-within .card-default-view,
    .flex-card-item:focus .card-default-view {
        opacity: 0;
        transform: scale(0.9) translateY(-10px);
        pointer-events: none;
    }

    .flex-card-item:focus-within .card-icon,
    .flex-card-item:focus .card-icon {
        height: 0;
        margin-bottom: 0;
    }

    .flex-card-item:focus-within .card-expanded-view,
    .flex-card-item:focus .card-expanded-view {
        opacity: 1;
        transform: translateY(0);
        pointer-events: auto;
    }

    .flex-card-item:focus-within .tech-list li,
    .flex-card-item:focus .tech-list li {
        opacity: 1;
        transform: translateY(0);
        transition: opacity 0.5s var(--transition-apple), transform 0.5s var(--transition-apple);
    }

    .flex-card-item:focus-within .tech-list li:nth-child(1),
    .flex-card-item:focus .tech-list li:nth-child(1) { transition-delay: 0.12s; }
    .flex-card-item:focus-within .tech-list li:nth-child(2),
    .flex-card-item:focus .tech-list li:nth-child(2) { transition-delay: 0.18s; }
    .flex-card-item:focus-within .tech-list li:nth-child(3),
    .flex-card-item:focus .tech-list li:nth-child(3) { transition-delay: 0.24s; }
    .flex-card-item:focus-within .tech-list li:nth-child(4),
    .flex-card-item:focus .tech-list li:nth-child(4) { transition-delay: 0.30s; }
}

.implementation-section {
    padding: 120px 0;
    background: var(--bg-secondary);
}

.implementation-container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 24px;
}

.section-header.compact {
    margin-bottom: 52px;
}

.site-foundation-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
}

.site-foundation-card {
    background: rgba(255,255,255,0.78);
    border: 1px solid rgba(0,0,0,0.04);
    border-radius: 22px;
    padding: 28px 24px 30px;
    box-shadow: 0 20px 50px rgba(0,0,0,0.025);
}

.site-foundation-index {
    display: inline-block;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 1.4px;
    color: var(--accent-blue);
    margin-bottom: 22px;
}

.site-foundation-card h3 {
    font-size: 19px;
    font-weight: 650;
    letter-spacing: -0.4px;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.site-foundation-card p {
    font-size: 14px;
    line-height: 1.65;
    color: #515154;
}

.inner-page-hero {
    padding: 150px 24px 68px 24px;
    background: var(--bg-secondary);
    text-align: center;
}

.inner-page-hero h1 {
    font-size: 36px;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -1px;
    margin-bottom: 14px;
}

.inner-page-hero p {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.7;
}

.privacy-content-wrapper {
    max-width: 760px;
    margin: 0 auto;
    padding: 60px 24px 90px;
}

.privacy-body h2 {
    font-size: 20px;
    color: var(--text-primary);
    margin: 36px 0 16px 0;
    font-weight: 650;
    letter-spacing: -0.2px;
}

.privacy-body p {
    font-size: 16px;
    color: #424245;
    line-height: 1.75;
    margin-bottom: 16px;
}

.secure-email-anchor {
    color: var(--accent-blue);
    text-decoration: none;
    font-weight: 600;
}

.secure-email-anchor:hover {
    text-decoration: underline;
}

.back-home-link {
    display: inline-block;
    margin-top: 40px;
    color: var(--accent-blue);
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
}

.back-home-link:hover {
    text-decoration: underline;
}

.error-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    background-color: var(--bg-primary);
    padding: 72px 24px;
}

.error-logo {
    width: 72px;
    height: 72px;
    margin-bottom: 28px;
}

.error-code {
    font-size: 112px;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -4px;
    line-height: 0.92;
}

.offline-label {
    font-size: 13px;
    font-weight: 800;
    letter-spacing: 2.5px;
    color: var(--accent-blue);
    margin-bottom: 16px;
}

.error-title {
    font-size: 24px;
    font-weight: 650;
    margin: 26px 0 12px 0;
    color: var(--text-primary);
}

.error-desc {
    font-size: 16px;
    color: var(--text-secondary);
    max-width: 420px;
    line-height: 1.7;
    margin-bottom: 40px;
}

.error-btn {
    display: inline-block;
    padding: 14px 32px;
    background-color: var(--text-primary);
    color: #ffffff;
    text-decoration: none;
    border-radius: 12px;
    font-size: 15px;
    font-weight: 600;
    transition: background-color 0.3s var(--transition-apple), transform 0.3s var(--transition-apple);
}

.error-btn:hover {
    background-color: #000000;
    transform: translateY(-2px);
}

body.menu-open {
    overflow: hidden;
}

.global-nav.nav-scrolled {
    background: rgba(251, 251, 253, 0.92);
    box-shadow: 0 8px 28px rgba(0,0,0,0.035);
}

@media (max-width: 960px) {
    .nav-links.single-link {
        position: static;
        width: auto;
        opacity: 1;
        transform: none;
        pointer-events: auto;
        display: flex;
        flex-direction: row;
        padding: 0;
        gap: 0;
        border-bottom: none;
        background: transparent;
        backdrop-filter: none;
        -webkit-backdrop-filter: none;
    }

    .nav-links.single-link a {
        margin-left: 0;
        width: auto;
        transform: none;
        opacity: 1;
        font-size: 13px;
        padding: 0;
    }

    .site-foundation-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .implementation-section {
        padding: 90px 0;
    }
}

@media (max-width: 640px) {
    .site-foundation-grid {
        grid-template-columns: 1fr;
    }

    .nav-links a {
        font-weight: 600;
    }

    .nav-links.active a:nth-child(3) { transition-delay: 0.26s; }

    .inner-page-hero h1 {
        font-size: 30px;
    }

    .privacy-content-wrapper {
        padding-top: 48px;
    }

    .error-code {
        font-size: 82px;
        letter-spacing: -2px;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
        scroll-behavior: auto !important;
        transition-duration: 0.001ms !important;
    }

    .hero-bg-cover,
    .hero-text-wrapper h1,
    .hero-subtitle {
        transform: none !important;
        opacity: 1 !important;
    }
}

.error-page {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}
.error-page .error-container {
    min-height: auto;
    flex: 1 0 auto;
    padding-top: 132px;
    padding-bottom: 72px;
    background: linear-gradient(180deg, #fbfbfd 0%, #f5f5f7 100%);
}
.error-panel {
    width: min(100%, 520px);
    border-radius: 28px;
    background: rgba(255,255,255,0.82);
    border: 1px solid rgba(0,0,0,0.05);
    box-shadow: 0 26px 70px rgba(0,0,0,0.045);
    padding: 48px 36px;
}
.error-page .global-footer {
    flex-shrink: 0;
}
@media (max-width: 640px) {
    .error-panel {
        padding: 40px 26px;
        border-radius: 24px;
    }
}