/* ═══════════════════════════════════════════════════════════
   QINGFUYUAN TECH - VCUT WEBSITE STYLES
   Color: White background + Blue (#0066FF) + Cyan (#00D4FF) + Orange (#FF6B35)
   ═══════════════════════════════════════════════════════════ */

/* ─── RESET & BASE ───────────────────────────────────────── */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --primary: #0066FF;
    --primary-dark: #0052CC;
    --primary-light: #3385FF;
    --accent: #00D4FF;
    --accent-2: #FF6B35;
    --accent-2-dark: #E55A2B;
    --text-primary: #1E293B;
    --text-secondary: #475569;
    --text-tertiary: #64748B;
    --bg-primary: #FFFFFF;
    --bg-soft: #F5F8FC;
    --bg-card: #F5F8FC;
    --bg-card-hover: #E8EFFB;
    --border: #E2E8F0;
    --border-strong: #C8D4E6;
    --warning-bg: #FFF0EC;
    --warning-border: #FF6B35;
    --success: #22C55E;
    --warning: #F59E0B;
    --danger: #EF4444;
    --shadow-sm: 0 2px 6px rgba(15, 30, 60, 0.06);
    --shadow-md: 0 6px 16px rgba(15, 30, 60, 0.08);
    --shadow-lg: 0 12px 32px rgba(15, 30, 60, 0.12);
    --shadow-blue: 0 8px 20px rgba(0, 102, 255, 0.18);
    --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    color: var(--text-primary);
    background: var(--bg-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary-dark); }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ─── NAVIGATION ─────────────────────────────────────────── */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    transition: var(--transition);
}

.navbar.scrolled {
    box-shadow: var(--shadow-sm);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 12px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    color: var(--primary);
}

.nav-logo-img {
    height: 36px;
    width: auto;
}

.nav-logo-text {
    font-size: 1.1rem;
}

.nav-menu {
    display: flex;
    gap: 6px;
    list-style: none;
}

.nav-link {
    color: var(--text-secondary);
    padding: 8px 14px;
    font-weight: 500;
    font-size: 0.95rem;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.nav-link:hover { color: var(--primary); background: var(--bg-soft); }
.nav-link.active {
    color: var(--primary);
    background: var(--bg-soft);
    font-weight: 600;
}

.nav-group { position: relative; }
.nav-group > .nav-link::after { content: '⌄'; margin-left: 5px; font-size: 0.78rem; }
.nav-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    left: 50%;
    min-width: 310px;
    padding: 10px;
    background: #FFFFFF;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translate(-50%, 8px);
    transition: var(--transition);
}
.nav-dropdown::before { content: ''; position: absolute; left: 0; right: 0; top: -10px; height: 10px; }
.nav-dropdown a { display: flex; align-items: center; justify-content: space-between; gap: 18px; padding: 9px 12px; border-radius: var(--radius-sm); color: var(--text-secondary); font-size: 0.86rem; white-space: nowrap; }
.nav-dropdown small { color: var(--text-tertiary); font-size: .68rem; }
.nav-dropdown a:hover, .nav-dropdown a:focus { color: var(--primary); background: var(--bg-soft); }
.nav-dropdown a:hover small, .nav-dropdown a:focus small { color: var(--primary); }
.nav-group:hover .nav-dropdown, .nav-group:focus-within .nav-dropdown { opacity: 1; visibility: visible; transform: translate(-50%, 0); }

.nav-toggle {
    display: none;
    width: 36px;
    height: 36px;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
}

.nav-toggle span {
    display: block;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition);
}

/* ─── HERO / HOME ────────────────────────────────────────── */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding-top: 60px;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    filter: brightness(0.55);
    transform: scale(1.05);
    transition: transform 8s ease-out;
}

.hero:hover .hero-bg { transform: scale(1.0); }

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg,
        rgba(10, 22, 51, 0.6) 0%,
        rgba(0, 102, 255, 0.45) 60%,
        rgba(255, 107, 53, 0.35) 100%);
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: #FFFFFF;
    padding: 0 24px;
    max-width: 1100px;
}

.hero-tag {
    display: inline-block;
    padding: 6px 16px;
    border: 1px solid rgba(255,255,255,0.4);
    border-radius: 100px;
    font-size: 0.85rem;
    letter-spacing: 1.5px;
    margin-bottom: 24px;
    backdrop-filter: blur(8px);
}

.hero-title {
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: 900;
    letter-spacing: -2px;
    line-height: 1;
    margin-bottom: 12px;
    text-shadow: 0 6px 32px rgba(0,0,0,0.4);
}

.brand-title {
    font-size: clamp(2.6rem, 6vw, 5rem);
    line-height: 1.15;
    letter-spacing: -1px;
    max-width: 980px;
    margin-left: auto;
    margin-right: auto;
}

.hero-subtitle {
    font-size: clamp(1.2rem, 2.5vw, 1.8rem);
    font-weight: 600;
    margin-bottom: 20px;
    opacity: 0.95;
}

.hero-desc {
    font-size: clamp(1rem, 1.6vw, 1.15rem);
    opacity: 0.9;
    margin-bottom: 44px;
    letter-spacing: 0.5px;
    line-height: 1.6;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 14px;
    max-width: 720px;
    margin: 0 auto 24px;
}

.hero-stat-card {
    background: rgba(255, 255, 255, 0.12);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-radius: var(--radius-md);
    padding: 16px 12px;
    text-align: center;
    transition: var(--transition);
}

.hero-stat-card:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.hero-stat-value {
    font-size: clamp(1.5rem, 2.8vw, 2rem);
    font-weight: 800;
    color: #00D4FF;
    margin-bottom: 4px;
}

.hero-stat-accent .hero-stat-value { color: #FF6B35; }

.hero-stat-label {
    font-size: 0.85rem;
    opacity: 0.85;
}

.hero-tags {
    font-size: 0.85rem;
    opacity: 0.7;
    margin-bottom: 28px;
}

.hero-desc + .hero-tags { margin-top: -22px; }

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

.btn {
    display: inline-block;
    padding: 15px 36px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 100px;
    transition: var(--transition);
    text-align: center;
}

.btn-primary {
    background: var(--accent-2);
    color: #FFFFFF;
    box-shadow: 0 6px 20px rgba(255, 107, 53, 0.4);
}

.btn-primary:hover {
    background: var(--accent-2-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(255, 107, 53, 0.5);
}

.btn-outline {
    border: 2px solid rgba(255,255,255,0.6);
    color: #FFFFFF;
}

.btn-outline:hover {
    background: rgba(255,255,255,0.15);
    border-color: #FFFFFF;
    transform: translateY(-2px);
}

.hero-scroll {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    color: rgba(255,255,255,0.6);
    font-size: 0.8rem;
    text-align: center;
    z-index: 2;
}

.scroll-arrow {
    width: 24px;
    height: 24px;
    border-right: 2px solid rgba(255,255,255,0.6);
    border-bottom: 2px solid rgba(255,255,255,0.6);
    transform: rotate(45deg);
    margin: 8px auto 0;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 100% { transform: rotate(45deg) translate(0, 0); opacity: 1; }
    50% { transform: rotate(45deg) translate(4px, 4px); opacity: 0.5; }
}

/* ─── TRUST BAR ──────────────────────────────────────────── */
.trust-bar {
    background: linear-gradient(180deg, #0A1633 0%, #0E1C3A 100%);
    color: #FFFFFF;
    padding: 28px 0;
}

.trust-items {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 12px;
    align-items: center;
}

.trust-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 6px;
}

.trust-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    background: rgba(255,255,255,0.08);
    border-radius: 8px;
    font-size: 1.2rem;
    color: var(--accent);
    flex-shrink: 0;
}

.trust-item strong {
    display: block;
    font-size: 0.92rem;
    margin-bottom: 2px;
}

.trust-item span {
    font-size: 0.78rem;
    opacity: 0.7;
}

/* ─── SECTION COMMON ─────────────────────────────────────── */
.section {
    padding: 60px 0;
    background: var(--bg-primary);
}

.section-header {
    text-align: center;
    margin-bottom: 28px;
}

.section-label {
    display: inline-block;
    padding: 4px 14px;
    background: var(--bg-soft);
    color: var(--primary);
    border-radius: 100px;
    font-size: 0.78rem;
    letter-spacing: 1.5px;
    font-weight: 600;
    margin-bottom: 12px;
}

.section-title {
    font-size: clamp(1.8rem, 3vw, 2.4rem);
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 10px;
    letter-spacing: -0.5px;
}

.section-subtitle {
    font-size: clamp(0.9rem, 1.3vw, 1rem);
    color: var(--text-tertiary);
    max-width: 700px;
    margin: 0 auto;
}

.about-sub-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.about-sub-title::before {
    content: '';
    width: 4px;
    height: 18px;
    background: var(--primary);
    border-radius: 2px;
}

/* ─── ABOUT INTRO ROW ────────────────────────────────────── */
.about-intro { background: var(--bg-soft); }

.about-intro-row {
    display: grid;
    grid-template-columns: 1fr 1.4fr;
    gap: 40px;
    align-items: center;
}

.about-intro-img {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.about-intro-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    min-height: 280px;
}

.about-img-badge {
    position: absolute;
    bottom: 16px;
    left: 16px;
    background: rgba(255,255,255,0.95);
    padding: 8px 14px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
}

.about-img-badge strong {
    display: block;
    color: var(--primary);
    font-size: 0.95rem;
}

.about-img-badge span {
    font-size: 0.78rem;
    color: var(--text-tertiary);
}

.about-intro-text p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 12px;
    line-height: 1.7;
}

.about-intro-tag {
    display: inline-block;
    padding: 4px 14px;
    background: var(--bg-soft);
    color: var(--primary);
    font-size: 0.82rem;
    font-weight: 600;
    border-radius: 100px;
    margin-bottom: 14px;
    letter-spacing: 0.5px;
}

/* ─── VALUES STRIP (compact) ─────────────────────────────── */
.values-section {
    padding: 32px 0;
    background: var(--bg-primary);
}

.values-strip {
    display: flex;
    align-items: stretch;
    background: linear-gradient(135deg, var(--bg-soft) 0%, #FFFFFF 100%);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.value-pill {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 18px 24px;
    transition: var(--transition);
}

.value-pill:hover { background: rgba(0, 102, 255, 0.04); }

.value-pill-icon {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    color: #FFFFFF;
    border-radius: var(--radius-md);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    flex-shrink: 0;
}

.value-pill-text strong {
    display: block;
    font-size: 1rem;
    color: var(--text-primary);
    font-weight: 700;
    margin-bottom: 2px;
}

.value-pill-text span {
    font-size: 0.85rem;
    color: var(--text-tertiary);
}

.value-pill-divider {
    width: 1px;
    background: var(--border);
    margin: 14px 0;
}

/* ─── TIMELINE COMPACT ───────────────────────────────────── */
.timeline-section {
    background: var(--bg-soft);
}

.timeline-compact {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 16px;
    position: relative;
}

.timeline-compact::before {
    content: '';
    position: absolute;
    top: 18px;
    left: 5%;
    right: 5%;
    height: 2px;
    background: linear-gradient(to right, var(--primary-light), var(--accent), var(--accent-2));
    z-index: 0;
}

.tl-item {
    position: relative;
    z-index: 1;
}

.tl-dot {
    width: 14px;
    height: 14px;
    background: var(--primary);
    border-radius: 50%;
    margin: 11px auto 14px;
    box-shadow: 0 0 0 4px var(--bg-soft), 0 0 0 6px var(--primary);
}

.tl-dot-accent {
    background: var(--accent-2);
    box-shadow: 0 0 0 4px var(--bg-soft), 0 0 0 6px var(--accent-2);
}

.tl-card {
    background: var(--bg-primary);
    padding: 16px 14px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    text-align: center;
    border: 1px solid var(--border);
    transition: var(--transition);
}

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

.tl-card-accent {
    background: linear-gradient(135deg, #FFF5F0 0%, #FFFFFF 100%);
    border-color: var(--accent-2);
}

.tl-year {
    display: inline-block;
    padding: 3px 10px;
    background: var(--primary);
    color: #FFFFFF;
    font-weight: 700;
    font-size: 0.85rem;
    border-radius: 100px;
    margin-bottom: 8px;
}

.tl-card-accent .tl-year { background: var(--accent-2); }

.tl-card h4 {
    font-size: 0.95rem;
    color: var(--text-primary);
    margin-bottom: 6px;
    font-weight: 700;
}

.tl-card p {
    font-size: 0.78rem;
    color: var(--text-tertiary);
    line-height: 1.5;
}

/* ─── BRAND CAPABILITIES & SOLUTIONS ────────────────────── */
.capabilities-section { background: var(--bg-soft); }
.solutions-section { background: var(--bg-primary); }

.brand-capability-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
}

.brand-capability-card {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 24px;
    transition: var(--transition);
}

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

.capability-icon {
    display: inline-flex;
    width: 46px;
    height: 46px;
    align-items: center;
    justify-content: center;
    border-radius: 14px;
    margin-bottom: 16px;
    color: #FFFFFF;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    font-size: 1.1rem;
    font-weight: 800;
}

.brand-capability-card:nth-child(3n) .capability-icon {
    background: linear-gradient(135deg, var(--accent-2), #FF8A5C);
}

.brand-capability-card h3 {
    color: var(--text-primary);
    font-size: 1.08rem;
    margin-bottom: 8px;
}

.brand-capability-card p {
    color: var(--text-tertiary);
    font-size: 0.88rem;
    line-height: 1.65;
}

.solutions-grid { grid-template-columns: repeat(2, 1fr); }
.solution-card { min-height: 250px; }
.solution-scope { margin-top: 6px; }

.solution-card-icon {
    align-self: flex-end;
    color: var(--border);
    font-size: 2.4rem;
    font-weight: 900;
    line-height: 1;
    margin-bottom: -18px;
}

.delivery-process {
    margin: 0 0 40px;
    padding: 28px;
    background: var(--bg-soft);
    border-radius: var(--radius-lg);
}

/* ─── PRODUCT SECTION ────────────────────────────────────── */
.product { background: var(--bg-soft); }

.product-block {
    margin-bottom: 56px;
}

.product-overview {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: 28px;
    align-items: stretch;
}

.product-overview-img {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.product-overview-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    min-height: 360px;
}

.product-overview-cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr 1fr;
    gap: 14px;
}

.pc-card {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 18px 20px;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.pc-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-sm);
}

.pc-card-num {
    display: inline-block;
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 6px;
}

.pc-card h4 {
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 6px;
    color: var(--text-primary);
}

.pc-card p {
    font-size: 0.82rem;
    color: var(--text-tertiary);
    line-height: 1.55;
}

/* ─── TECH SPECS ─────────────────────────────────────────── */
.tech-specs-compact {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 14px;
}

.spec-group {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 18px;
    transition: var(--transition);
}

.spec-group:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-sm);
    transform: translateY(-2px);
}

.spec-group h4 {
    font-size: 0.95rem;
    color: var(--primary);
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--primary);
    font-weight: 700;
}

.spec-table {
    width: 100%;
    border-collapse: collapse;
}

.spec-table tr { border-bottom: 1px dashed var(--border); }
.spec-table tr:last-child { border-bottom: none; }
.spec-table td {
    padding: 6px 0;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.spec-table td:last-child {
    text-align: right;
    font-weight: 600;
    color: var(--text-primary);
}

/* ─── ARCHITECTURE GRID ──────────────────────────────────── */
.arch-compact-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-bottom: 20px;
}

.arch-col {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: var(--transition);
}

.arch-col:hover { box-shadow: var(--shadow-md); }

.arch-col-control { border-top: 4px solid var(--primary); }
.arch-col-data { border-top: 4px solid var(--accent); }
.arch-col-business { border-top: 4px solid var(--accent-2); }

.arch-col-header {
    padding: 16px 18px 12px;
    border-bottom: 1px solid var(--border);
    background: var(--bg-soft);
}

.arch-col-num {
    display: inline-block;
    background: var(--primary);
    color: #FFFFFF;
    font-weight: 700;
    font-size: 0.78rem;
    padding: 2px 10px;
    border-radius: 100px;
    margin-bottom: 6px;
}

.arch-col-data .arch-col-num { background: var(--accent); color: var(--text-primary); }
.arch-col-business .arch-col-num { background: var(--accent-2); }

.arch-col-header h4 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-primary);
}

.arch-col-body {
    padding: 14px 18px;
}

.arch-tag {
    font-size: 0.85rem;
    color: var(--text-secondary);
    padding: 4px 0;
}

.arch-compat-strip {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 18px 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
    flex-wrap: wrap;
}

.arch-compat-highlight {
    font-size: 0.92rem;
    color: var(--text-secondary);
    flex: 1;
    min-width: 280px;
    text-align: center;
}

.arch-compat-highlight-full {
    flex: 1;
    text-align: center;
    line-height: 1.8;
    padding: 6px 16px;
}

.arch-compat-highlight strong {
    color: var(--accent-2);
    font-size: 1rem;
}

/* ─── SYSTEM GRID ────────────────────────────────────────── */
.system-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 14px;
}

.system-card {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: var(--transition);
    cursor: pointer;
}

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

.system-card-img {
    height: 130px;
    overflow: hidden;
    background: var(--bg-soft);
    border-bottom: 1px solid var(--border);
}

.system-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top;
}

.system-card-body {
    padding: 12px 14px;
}

.system-card-num {
    display: inline-block;
    font-size: 1rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 4px;
}

.system-card-body h4 {
    font-size: 0.95rem;
    margin-bottom: 4px;
    font-weight: 700;
    color: var(--text-primary);
}

.system-card-body > p {
    font-size: 0.8rem;
    color: var(--text-tertiary);
    margin-bottom: 8px;
}

.system-kpis {
    display: flex;
    gap: 4px;
    flex-wrap: wrap;
}

.system-kpis span {
    font-size: 0.72rem;
    padding: 2px 6px;
    background: var(--bg-soft);
    color: var(--text-secondary);
    border-radius: 4px;
}

/* ─── MOBILE COMPACT ─────────────────────────────────────── */
.mobile-compact {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 32px;
    align-items: center;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 28px;
}

.phone-mockup {
    display: flex;
    justify-content: center;
}

.phone-frame {
    width: 240px;
    height: 480px;
    background: #1E293B;
    border-radius: 28px;
    padding: 8px;
    box-shadow: var(--shadow-lg);
    position: relative;
}

.phone-screen {
    background: linear-gradient(180deg, #0E1C3A 0%, #102044 100%);
    width: 100%;
    height: 100%;
    border-radius: 22px;
    padding: 14px 12px;
    color: #FFFFFF;
    overflow: hidden;
}

.phone-statusbar {
    font-size: 0.7rem;
    text-align: right;
    margin-bottom: 8px;
    color: rgba(255,255,255,0.7);
}

.phone-header {
    font-size: 0.9rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--accent);
}

.phone-kpi-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6px;
    margin-bottom: 10px;
}

.phone-kpi {
    padding: 8px;
    background: rgba(255,255,255,0.08);
    border-radius: 6px;
}

.phone-kpi-label {
    font-size: 0.65rem;
    opacity: 0.7;
    margin-bottom: 2px;
}

.phone-kpi-value {
    font-size: 1.1rem;
    font-weight: 800;
}

.phone-kpi-blue .phone-kpi-value { color: var(--accent); }
.phone-kpi-orange .phone-kpi-value { color: var(--accent-2); }

.phone-chart-title {
    font-size: 0.7rem;
    opacity: 0.8;
    margin-bottom: 4px;
}

.phone-bars {
    display: flex;
    align-items: flex-end;
    height: 60px;
    gap: 4px;
    margin-bottom: 10px;
}

.phone-bar {
    flex: 1;
    background: var(--accent);
    border-radius: 2px 2px 0 0;
    opacity: 0.7;
    transition: var(--transition);
}

.phone-bar-accent {
    background: var(--accent-2);
    opacity: 1;
}

.phone-alarms {
    background: rgba(255,255,255,0.05);
    border-radius: 6px;
    padding: 6px 8px;
    margin-bottom: 8px;
}

.phone-alarm-title {
    font-size: 0.65rem;
    opacity: 0.7;
    margin-bottom: 3px;
}

.phone-alarm {
    font-size: 0.7rem;
    padding: 2px 0;
    color: rgba(255,255,255,0.9);
}

.phone-nav {
    font-size: 0.7rem;
    text-align: center;
    padding: 6px;
    background: rgba(255,255,255,0.06);
    border-radius: 6px;
    opacity: 0.7;
}

.mobile-compact-right {
    padding-left: 12px;
}

.mobile-badge {
    display: inline-block;
    padding: 4px 12px;
    background: var(--accent-2);
    color: #FFFFFF;
    font-size: 0.82rem;
    font-weight: 600;
    border-radius: 100px;
    margin-bottom: 12px;
}

.mobile-desc-compact {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 18px;
    line-height: 1.6;
}

.mobile-features-compact {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 14px;
}

.mf-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    background: var(--bg-soft);
    border-radius: var(--radius-md);
}

.mf-icon {
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: #FFFFFF;
    border-radius: 6px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    flex-shrink: 0;
}

.mf-item h4 {
    font-size: 0.88rem;
    font-weight: 700;
    color: var(--text-primary);
}

.mobile-notice-compact {
    background: var(--warning-bg);
    border: 1px solid var(--warning-border);
    border-radius: var(--radius-md);
    padding: 10px 14px;
    font-size: 0.82rem;
    color: var(--text-secondary);
    line-height: 1.55;
}

/* ─── ADVANTAGES SECTION ─────────────────────────────────── */
.advantages { background: var(--bg-primary); }

.adv-block {
    margin-bottom: 80px;
    padding-bottom: 8px;
}

.adv-block:last-child {
    margin-bottom: 0;
}

.adv-block + .adv-block {
    padding-top: 24px;
    border-top: 1px solid var(--border);
}

.killer-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
}

.killer-card {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 20px 18px;
    position: relative;
    overflow: hidden;
    transition: var(--transition);
}

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

.killer-card-accent {
    background: linear-gradient(135deg, #FFF5F0 0%, #FFFFFF 100%);
    border-color: var(--accent-2);
}

.killer-num {
    position: absolute;
    top: 12px;
    right: 14px;
    font-size: 2rem;
    font-weight: 900;
    color: var(--bg-soft);
}

.killer-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    margin-bottom: 12px;
}

.killer-dot-blue { background: var(--primary); }
.killer-dot-orange { background: var(--accent-2); }

.killer-card h4 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.killer-metric {
    font-size: 2rem;
    font-weight: 900;
    color: var(--primary);
    margin-bottom: 4px;
    line-height: 1;
    letter-spacing: -1px;
}

.killer-card-accent .killer-metric { color: var(--accent-2); }

.killer-card p {
    font-size: 0.85rem;
    color: var(--text-tertiary);
    line-height: 1.55;
}

/* ─── BUYOUT COMPARISON ──────────────────────────────────── */
.buyout-compact {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 20px;
    align-items: stretch;
}

.buyout-table-wrap {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.cost-table {
    width: 100%;
    border-collapse: collapse;
}

.cost-table th,
.cost-table td {
    padding: 12px 16px;
    text-align: center;
    font-size: 0.9rem;
    border-bottom: 1px solid var(--border);
}

.cost-table th {
    background: var(--bg-soft);
    color: var(--primary);
    font-weight: 700;
    font-size: 0.92rem;
}

.cost-table th:first-child,
.cost-table td:first-child {
    text-align: left;
    color: var(--text-secondary);
    font-weight: 500;
}

.cost-table td:nth-child(2) {
    color: var(--text-tertiary);
    background: #FFFBFA;
}

.cost-table td:nth-child(3) {
    color: var(--accent-2);
    font-weight: 700;
    background: var(--warning-bg);
}

.cost-table .cost-total td {
    font-weight: 800;
    font-size: 1.05rem;
    border-top: 2px solid var(--primary);
    padding: 14px 16px;
}

.cost-table .cost-total td:nth-child(2) { color: var(--danger); }

.buyout-highlight {
    background: linear-gradient(135deg, var(--accent-2) 0%, #FF8A5C 100%);
    color: #FFFFFF;
    border-radius: var(--radius-md);
    padding: 24px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    text-align: center;
}

.buyout-savings-label {
    font-size: 0.95rem;
    margin-bottom: 6px;
    opacity: 0.95;
}

.buyout-savings-value {
    font-size: 3rem;
    font-weight: 900;
    letter-spacing: -2px;
    line-height: 1;
    margin-bottom: 14px;
}

.buyout-note {
    font-size: 0.85rem;
    opacity: 0.95;
    line-height: 1.55;
}

/* ─── DATA DASHBOARD COMPACT ─────────────────────────────── */
.data-compact {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 24px;
    align-items: center;
}

.data-compact-img {
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    background: var(--bg-soft);
}

.data-compact-img img { width: 100%; height: 100%; object-fit: cover; min-height: 240px; }

.data-compact-cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.dc-card {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 14px;
    transition: var(--transition);
}

.dc-card:hover { border-color: var(--primary); box-shadow: var(--shadow-sm); }

.dc-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: #FFFFFF;
    border-radius: 8px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    margin-bottom: 10px;
}

.dc-card h4 {
    font-size: 0.92rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.dc-card p {
    font-size: 0.78rem;
    color: var(--text-tertiary);
    line-height: 1.5;
}

/* ─── ROI TABLE ──────────────────────────────────────────── */
.roi-table-wrapper {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.roi-table {
    width: 100%;
    border-collapse: collapse;
}

.roi-table th,
.roi-table td {
    padding: 14px 16px;
    text-align: left;
    font-size: 0.9rem;
    border-bottom: 1px solid var(--border);
}

.roi-table th {
    background: var(--primary);
    color: #FFFFFF;
    font-weight: 700;
    font-size: 0.95rem;
}

.roi-table th:first-child { background: var(--primary-dark); }

.roi-dim {
    font-weight: 700;
    color: var(--text-primary);
    background: var(--bg-soft);
}

.roi-table td:nth-child(2) {
    color: var(--text-tertiary);
    background: #FFFBFA;
}

.roi-table td:nth-child(3) {
    color: var(--primary);
    font-weight: 600;
}

.roi-benefit {
    color: var(--accent-2) !important;
    font-weight: 700 !important;
    background: var(--warning-bg) !important;
}

.roi-summary-compact {
    margin-top: 16px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    color: #FFFFFF;
    padding: 16px 24px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
}

.roi-summary-compact p {
    font-size: 0.95rem;
    margin: 0;
}

.roi-highlight {
    padding: 6px 16px;
    background: #FFFFFF;
    color: var(--primary);
    font-weight: 700;
    border-radius: 100px;
    font-size: 0.9rem;
}

/* ─── INDUSTRY CASES (NEW COMPACT 3-COLUMN) ──────────────── */
.industry { background: var(--bg-soft); }

.industry-grid-compact {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
    margin-bottom: 28px;
}

.industry-card {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

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

.industry-card-accent {
    border-top: 3px solid var(--accent-2);
}

.industry-card-img {
    height: 140px;
    overflow: hidden;
    background: var(--bg-soft);
}

.industry-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.industry-card-body {
    padding: 16px 18px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.industry-tag {
    display: inline-block;
    padding: 3px 10px;
    background: var(--bg-soft);
    color: var(--primary);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 100px;
    margin-bottom: 10px;
    align-self: flex-start;
}

.industry-tag-orange {
    background: var(--warning-bg);
    color: var(--accent-2);
}

.industry-card h3 {
    font-size: 1.1rem;
    color: var(--text-primary);
    margin-bottom: 6px;
    font-weight: 700;
}

.industry-card-body > p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 10px;
    line-height: 1.55;
}

.industry-bullets {
    list-style: none;
    margin: 0 0 12px;
    padding: 0;
}

.industry-bullets li {
    font-size: 0.8rem;
    color: var(--text-tertiary);
    padding: 2px 0 2px 14px;
    position: relative;
}

.industry-bullets li::before {
    content: '●';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-size: 0.7rem;
    top: 4px;
}

.industry-case-tile {
    background: var(--bg-soft);
    border-left: 3px solid var(--primary);
    padding: 8px 12px;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: 12px;
    line-height: 1.5;
}

.industry-card-accent .industry-case-tile { border-left-color: var(--accent-2); }

.industry-case-tile strong { color: var(--primary); }

.industry-card-accent .industry-case-tile strong { color: var(--accent-2); }

.industry-metrics {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 6px;
    margin-top: auto;
    padding-top: 10px;
    border-top: 1px solid var(--border);
}

.industry-metric {
    text-align: center;
}

.industry-metric strong {
    display: block;
    font-size: 1.05rem;
    font-weight: 800;
    color: var(--primary);
    line-height: 1.1;
}

.industry-card-accent .industry-metric strong { color: var(--accent-2); }

.industry-metric span {
    font-size: 0.7rem;
    color: var(--text-tertiary);
}

/* Industry footer row */
.industry-footer-row {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 20px;
    align-items: stretch;
}

.industry-materials {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 18px 22px;
}

.industry-materials h4 {
    font-size: 0.95rem;
    color: var(--text-primary);
    margin-bottom: 12px;
    font-weight: 700;
}

.industry-material-chips {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.mat-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: var(--bg-soft);
    border-radius: 100px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.mat-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.industry-testimonial-mini {
    background: linear-gradient(135deg, var(--bg-soft) 0%, #FFFFFF 100%);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 18px 22px;
    position: relative;
}

.quote-mark {
    position: absolute;
    top: 6px;
    left: 14px;
    font-size: 2.5rem;
    color: var(--primary);
    opacity: 0.2;
    font-family: Georgia, serif;
    line-height: 1;
}

.industry-testimonial-mini p {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 8px;
    position: relative;
}

.quote-author {
    font-size: 0.78rem;
    color: var(--text-tertiary);
}

/* ─── SUPPORT SECTION (3-card refactored) ───────────────── */
.support { background: var(--bg-primary); }

.support-service-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-bottom: 36px;
}

.support-service-card {
    position: relative;
    overflow: hidden;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 26px;
    text-align: left;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-sm);
}

.support-service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
}

.support-service-card:hover {
    border-color: rgba(26, 111, 255, 0.32);
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.support-service-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 22px;
}

.support-service-symbol {
    width: 52px;
    height: 52px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: #245e9c;
    background: #f4f7fb;
    border: 1px solid #dce5ef;
    border-radius: 14px;
}

.support-service-symbol svg {
    width: 25px;
    height: 25px;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.6;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.support-service-step {
    color: #e7edf5;
    font-size: 2.35rem;
    line-height: 1;
    font-weight: 800;
    letter-spacing: -0.05em;
}

.support-service-badge {
    display: flex;
    align-items: baseline;
    gap: 8px;
    color: var(--primary);
    margin-bottom: 11px;
    font-weight: 700;
    font-size: 0.8rem;
}

.support-service-badge small {
    color: var(--text-tertiary);
    font-size: 0.62rem;
    font-weight: 700;
    letter-spacing: 0.12em;
}

.support-service-card h3 {
    font-size: 1.12rem;
    color: var(--text-primary);
    margin-bottom: 12px;
    font-weight: 700;
}

.support-service-card p {
    font-size: 0.85rem;
    color: var(--text-tertiary);
    line-height: 1.6;
    margin-bottom: 18px;
}

.support-service-tag {
    position: relative;
    display: block;
    padding: 15px 0 0 14px;
    margin-top: auto;
    border-top: 1px solid var(--border);
    color: var(--text-secondary);
    font-size: 0.78rem;
    font-weight: 700;
}

.support-service-tag::before {
    content: '';
    position: absolute;
    left: 0;
    top: 20px;
    width: 5px;
    height: 5px;
    background: var(--primary);
    border-radius: 50%;
}

/* ─── FAQ ────────────────────────────────────────────────── */
.support-faq-block {
    background: var(--bg-soft);
    border-radius: var(--radius-lg);
    padding: 28px;
}

.faq-list {
    display: grid;
    gap: 10px;
}

.faq-item {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: var(--transition);
}

.faq-item:hover { box-shadow: var(--shadow-sm); }

.faq-question {
    width: 100%;
    padding: 14px 18px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    text-align: left;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    transition: var(--transition);
}

.faq-question:hover { background: var(--bg-soft); }

.faq-toggle {
    width: 24px;
    height: 24px;
    background: var(--bg-soft);
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: var(--primary);
    transition: var(--transition);
    flex-shrink: 0;
    margin-left: 12px;
}

.faq-item.active .faq-toggle {
    transform: rotate(45deg);
    background: var(--primary);
    color: #FFFFFF;
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
}

.faq-item.active .faq-answer {
    max-height: 300px;
}

.faq-answer p {
    padding: 0 18px 16px;
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.7;
    border-top: 1px solid var(--border);
    padding-top: 14px;
}

/* ─── CONTACT US (Reference Style: img left + clean text right + map) ───── */
.contact-section {
    background: #FFFFFF;
    padding: 60px 0 0;
}

.contact-header-row {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 36px;
    align-items: center;
    margin-bottom: 32px;
    padding-bottom: 32px;
    border-bottom: 1px solid var(--border);
}

.contact-header-img {
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.contact-header-img img {
    width: 100%;
    height: 240px;
    object-fit: cover;
}

.contact-header-info {
    padding: 8px 0;
}

.contact-company-name {
    font-size: clamp(1.4rem, 2.4vw, 1.8rem);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 18px;
    border-bottom: 2px solid var(--primary);
    padding-bottom: 12px;
    display: inline-block;
}

.contact-info-lines {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.contact-info-lines p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.7;
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
}

.info-label {
    color: var(--text-primary);
    font-weight: 600;
    margin-right: 8px;
    min-width: 60px;
}

.info-value {
    color: var(--text-secondary);
}

.info-value a {
    color: var(--primary);
    font-weight: 600;
}

.email-link {
    color: #1E293B !important;
    font-weight: 400 !important;
}

.email-link:hover {
    color: var(--primary) !important;
}

.info-value a:hover {
    text-decoration: underline;
}

.info-dept {
    color: var(--text-tertiary);
    margin-right: 4px;
}

/* Map */
.contact-map-wrap {
    width: 100%;
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    margin-bottom: 32px;
    border: 1px solid var(--border);
}

.contact-map-wrap iframe {
    display: block;
    width: 100%;
}

#companyMap {
    width: 100%;
    height: 380px;
    border: 0;
    z-index: 1;
}

#companyMap .leaflet-popup-content strong {
    color: var(--primary);
    font-size: 0.95rem;
}

/* CTA row */
.contact-cta-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-bottom: 60px;
}

.contact-cta-item {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 18px;
    display: grid;
    grid-template-columns: 42px 1fr;
    grid-template-rows: auto auto;
    align-items: center;
    column-gap: 14px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.contact-cta-item:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.cta-highlight {
    background: linear-gradient(135deg, #F2F7FF 0%, #FFFFFF 100%);
    color: var(--text-primary);
    border-color: #C9DDF8;
}

.cta-icon {
    width: 42px;
    height: 42px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    color: #FFFFFF;
    border-radius: 10px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.95rem;
    font-weight: 800;
    flex-shrink: 0;
    grid-row: 1 / 3;
}

.cta-highlight .cta-icon {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
}

.contact-cta-item strong {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.35;
}

.contact-cta-item .cta-value {
    font-size: 0.82rem;
    color: var(--text-tertiary);
    line-height: 1.5;
}

.cta-highlight .cta-value { color: var(--text-secondary); }

/* ─── FOOTER ─────────────────────────────────────────────── */
.footer {
    background: linear-gradient(180deg, #0A1633 0%, #06102A 100%);
    color: #FFFFFF;
    padding: 32px 0 0;
}

.footer-main {
    display: grid;
    grid-template-columns: 290px 1fr 130px;
    gap: 28px;
    align-items: stretch;
    margin-bottom: 20px;
}

/* ── Left: Red hotline box ── */
.footer-hotline-box {
    background: linear-gradient(135deg, #E63946 0%, #C1121F 100%);
    border-radius: 8px;
    padding: 16px 18px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
    overflow: hidden;
    box-shadow: 0 8px 24px rgba(230, 57, 70, 0.25);
}

.footer-hotline-box::before {
    content: '';
    position: absolute;
    top: -30%;
    right: -20%;
    width: 180px;
    height: 180px;
    background: radial-gradient(circle, rgba(255,255,255,0.12) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.hotline-phone-row {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
}

.hotline-phone-icon {
    flex-shrink: 0;
}

.hotline-label {
    font-size: 0.75rem;
    opacity: 0.9;
    margin-left: 2px;
}

.hotline-number {
    font-size: 1.2rem;
    font-weight: 700;
    color: #FFFFFF;
    letter-spacing: 0.5px;
    line-height: 1.2;
}

.hotline-divider {
    height: 1px;
    background: rgba(255,255,255,0.3);
    margin: 10px 0 8px;
}

.hotline-addr,
.hotline-web {
    font-size: 0.75rem;
    line-height: 1.5;
    opacity: 0.95;
    margin-bottom: 3px;
}

.hotline-addr-label,
.hotline-web-label {
    opacity: 0.85;
    font-weight: 500;
}

.hotline-web a { color: #FFFFFF; }
.hotline-web a:hover { text-decoration: underline; }

/* ── Middle: 3-column links ── */
.footer-columns {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    align-content: start;
    padding-top: 0;
}

.footer-col h4 {
    font-size: 0.9rem;
    margin-bottom: 12px;
    color: #FFFFFF;
    font-weight: 600;
    position: relative;
    padding-bottom: 8px;
}

.footer-col h4::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 28px;
    height: 2px;
    background: linear-gradient(90deg, #E63946, #FF6B35);
    border-radius: 2px;
}

.footer-col ul {
    list-style: none;
}

.footer-col ul li {
    padding: 3px 0;
    font-size: 0.82rem;
}

.footer-col ul li a {
    color: rgba(255,255,255,0.7);
    transition: all 0.2s ease;
    display: inline-block;
}

.footer-col ul li a:hover {
    color: #FF6B35;
    transform: translateX(3px);
}

/* ── Right: QR code ── */
.footer-qrcode {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    padding-top: 0;
}

.qrcode-img-wrap {
    width: 100px;
    height: 100px;
    background: #FFFFFF;
    border-radius: 6px;
    padding: 5px;
    margin-bottom: 8px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.15);
}

.qrcode-img {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: contain;
}

.qrcode-label {
    font-size: 0.78rem;
    color: rgba(255,255,255,0.85);
    font-weight: 500;
    text-align: center;
    letter-spacing: 0.5px;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding: 12px 0;
    text-align: center;
}

.footer-bottom p {
    font-size: 0.75rem;
    opacity: 0.6;
    margin: 1px 0;
}

.footer-bottom a { color: inherit; }

/* ─── BACK TO TOP ────────────────────────────────────────── */
.back-to-top {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 44px;
    height: 44px;
    background: var(--primary);
    color: #FFFFFF;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 100;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

/* ─── ANIMATIONS ─────────────────────────────────────────── */
@keyframes fadeUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.fade-up {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ─── RESPONSIVE ─────────────────────────────────────────── */
@media (max-width: 992px) {
    .container { padding: 0 20px; }

    .nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-primary);
        flex-direction: column;
        padding: 0 12px;
        box-shadow: var(--shadow-md);
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease, padding 0.3s ease;
    }

    .nav-menu.open {
        max-height: 80vh;
        padding: 12px;
        overflow-y: auto;
    }

    .nav-dropdown { display: none; }

    .nav-toggle { display: flex; }

    .trust-items { grid-template-columns: 1fr 1fr; gap: 14px; }

    .timeline-compact {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .timeline-compact::before { display: none; }

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

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

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

    .tech-specs-compact { grid-template-columns: 1fr 1fr; }

    .arch-compact-grid { grid-template-columns: 1fr; }
    .arch-compat-strip { flex-direction: column; align-items: center; }

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

    .mobile-compact { grid-template-columns: 1fr; }
    .mobile-compact-right { padding-left: 0; }

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

    .buyout-compact { grid-template-columns: 1fr; }

    .data-compact { grid-template-columns: 1fr; }

    .industry-grid-compact { grid-template-columns: 1fr; }
    .industry-footer-row { grid-template-columns: 1fr; }

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

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

    .footer-main { grid-template-columns: 1fr 1fr; }
    .footer-qrcode { grid-column: 1 / -1; flex-direction: row; gap: 14px; justify-content: center; padding-top: 0; }
    .qrcode-img-wrap { width: 80px; height: 80px; margin-bottom: 0; }
    .qrcode-label { text-align: left; }

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

    .values-strip { flex-direction: column; }
    .value-pill-divider { width: auto; height: 1px; margin: 0; }
}

@media (max-width: 640px) {
    .hero { padding-top: 80px; }

    .brand-title { font-size: 2.35rem; }

    .brand-capability-grid,
    .solutions-grid { grid-template-columns: 1fr; }

    .product-overview-cards,
    .tech-specs-compact,
    .killer-grid {
        grid-template-columns: 1fr;
        grid-template-rows: none;
    }

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

    .section { padding: 40px 0; }

    .footer-main { grid-template-columns: 1fr; }
    .footer-qrcode { padding-top: 0; flex-direction: column; }
    .qrcode-img-wrap { width: 110px; height: 110px; }
    .qrcode-label { text-align: center; }

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

    .support-faq-block { padding: 18px; }
}

/* ─── MULTI-PAGE HOME & DETAIL PAGES ───────────────────── */
.card-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--primary);
    font-size: 0.88rem;
    font-weight: 700;
    margin-top: auto;
    padding-top: 12px;
}

.card-link span { transition: transform 0.2s ease; }
.card-link:hover span { transform: translateX(4px); }

.partners-section { padding: 24px 0; background: #FFFFFF; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.partners-row { display: flex; align-items: center; justify-content: space-between; gap: 40px; }
.partners-kicker { display: block; margin-bottom: 5px; color: var(--primary); font-size: .76rem; font-weight: 800; letter-spacing: .08em; }
.partners-row h2 { color: var(--text-primary); font-size: 1.12rem; }
.partner-logo { display: flex; align-items: center; gap: 18px; min-width: 460px; padding: 18px 22px; background: var(--bg-soft); border: 1px solid var(--border); border-radius: var(--radius-md); }
.partner-logo img { width: 360px; height: auto; max-height: 64px; object-fit: contain; }
.partner-logo span { margin-left: auto; padding-left: 18px; color: var(--text-tertiary); font-size: .72rem; white-space: nowrap; border-left: 1px solid var(--border); }

.topics-section { background: var(--bg-soft); }
.topic-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }

.topic-card {
    position: relative;
    min-height: 230px;
    padding: 28px;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    color: inherit;
    transition: var(--transition);
}

.topic-card:hover { transform: translateY(-3px); border-color: var(--primary); box-shadow: var(--shadow-md); }
.topic-card-featured { background: linear-gradient(135deg, #EAF3FF, #FFFFFF); border-color: var(--primary); }
.topic-kicker { color: var(--primary); font-size: 0.78rem; font-weight: 700; margin-bottom: 16px; }
.topic-count { position: absolute; top: 24px; right: 24px; color: #B5C5D8; font-size: 1.8rem; font-weight: 900; line-height: 1; }
.topic-card h3 { font-size: 1.35rem; color: var(--text-primary); margin-bottom: 10px; }
.topic-card p { color: var(--text-tertiary); font-size: 0.9rem; line-height: 1.65; }
.section-more { display: flex; justify-content: center; margin-top: 28px; }

.btn-secondary {
    display: inline-block;
    padding: 13px 30px;
    border-radius: 100px;
    color: var(--primary);
    border: 1px solid var(--primary);
    font-weight: 700;
    transition: var(--transition);
}

.btn-secondary:hover { color: #FFFFFF; background: var(--primary); transform: translateY(-2px); }
.contact-lead { color: var(--text-secondary); line-height: 1.7; margin: 8px 0 18px; }

.subpage-body { background: var(--bg-soft); }
.subpage-nav .nav-link.active { color: var(--primary); background: var(--bg-soft); }

.subpage-hero {
    position: relative;
    min-height: 520px;
    display: flex;
    align-items: center;
    color: #FFFFFF;
    padding: 110px 0 64px;
    overflow: hidden;
    background: #0A1633;
}

.subpage-hero-bg { position: absolute; inset: 0; background-size: cover; background-position: center; opacity: 0.3; }
.subpage-hero::after { content: ''; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(7,38,83,.96), rgba(7,86,163,.75), rgba(10,22,51,.5)); }
.subpage-hero .container { position: relative; z-index: 1; width: 100%; }

.breadcrumb { display: flex; gap: 8px; align-items: center; font-size: 0.82rem; opacity: 0.78; margin-bottom: 32px; }
.breadcrumb a { color: #FFFFFF; }
.detail-kicker { display: inline-block; padding: 5px 12px; border: 1px solid rgba(255,255,255,.35); border-radius: 100px; font-size: 0.78rem; margin-bottom: 16px; }
.subpage-hero h1 { max-width: 850px; font-size: clamp(2.3rem, 5vw, 4.4rem); line-height: 1.15; margin-bottom: 18px; }
.subpage-hero p { max-width: 760px; font-size: 1.05rem; line-height: 1.8; opacity: 0.9; }
.detail-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 26px; }
.detail-tags span { padding: 7px 13px; border-radius: 100px; background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.2); font-size: 0.82rem; }

.detail-section { padding: 64px 0; background: var(--bg-primary); }
.detail-section-alt { background: var(--bg-soft); }
.detail-intro { display: grid; grid-template-columns: 1.1fr 1fr; gap: 44px; align-items: start; }
.detail-intro h2, .detail-heading { font-size: clamp(1.7rem, 3vw, 2.3rem); color: var(--text-primary); margin-bottom: 16px; }
.detail-intro p, .detail-copy { color: var(--text-secondary); line-height: 1.85; }
.detail-summary { background: var(--bg-soft); border-left: 4px solid var(--primary); border-radius: var(--radius-md); padding: 24px; }
.detail-summary strong { display: block; color: var(--primary); margin-bottom: 10px; }

.detail-card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 28px; }
.detail-card { background: var(--bg-primary); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 24px; }
.detail-section:not(.detail-section-alt) .detail-card { background: var(--bg-soft); }
.detail-card-num { display: block; color: var(--primary); font-size: 0.78rem; font-weight: 800; margin-bottom: 14px; }
.detail-card h3 { color: var(--text-primary); font-size: 1.05rem; margin-bottom: 10px; }
.detail-card p { color: var(--text-tertiary); font-size: 0.87rem; line-height: 1.7; }

.detail-flow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-top: 28px; counter-reset: flow; }
.detail-flow-step { position: relative; background: var(--bg-primary); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 22px; }
.detail-flow-step::before { counter-increment: flow; content: '0' counter(flow); display: block; color: var(--accent-2); font-weight: 900; margin-bottom: 10px; }
.detail-flow-step h3 { font-size: 1rem; color: var(--text-primary); margin-bottom: 8px; }
.detail-flow-step p { font-size: 0.82rem; color: var(--text-tertiary); line-height: 1.6; }

.detail-cta { padding: 56px 0; color: #FFFFFF; background: linear-gradient(135deg, var(--primary-dark), var(--primary)); text-align: center; }
.detail-cta h2 { font-size: clamp(1.7rem, 3vw, 2.4rem); margin-bottom: 12px; }
.detail-cta p { opacity: 0.86; margin-bottom: 24px; }
.detail-cta .btn-outline { color: #FFFFFF; border-color: rgba(255,255,255,.7); }

.simple-footer { padding: 28px 0; color: rgba(255,255,255,.65); background: #07142F; text-align: center; font-size: 0.82rem; }
.simple-footer a { color: #FFFFFF; margin: 0 8px; }

.hub-hero { min-height: 410px; }
.product-feature-grid { display: grid; grid-template-columns: 1.8fr 1fr; gap: 18px; }
.product-feature-main { min-height: 310px; display: grid; grid-template-columns: 42% 1fr; overflow: hidden; color: inherit; background: #FFFFFF; border: 1px solid var(--border); border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); }
.product-feature-main:hover { color: inherit; border-color: var(--primary); box-shadow: var(--shadow-md); transform: translateY(-2px); }
.product-feature-main img { width: 100%; height: 100%; object-fit: cover; }
.product-feature-main > div { display: flex; flex-direction: column; justify-content: center; padding: 32px; }
.product-feature-main span, .product-feature-side > span { color: var(--primary); font-size: .75rem; font-weight: 800; letter-spacing: .08em; }
.product-feature-main h2 { margin: 12px 0; color: var(--text-primary); font-size: 1.55rem; line-height: 1.35; }
.product-feature-main p, .product-feature-side p { color: var(--text-tertiary); font-size: .88rem; line-height: 1.7; }
.product-feature-main strong { margin-top: 22px; color: var(--primary); font-size: .86rem; }
.product-feature-side { position: relative; overflow: hidden; padding: 32px; background: linear-gradient(145deg, #0B2D59, #0B5EA8); color: #FFFFFF; border-radius: var(--radius-lg); }
.product-feature-side::after { content: ''; position: absolute; right: -50px; bottom: -60px; width: 180px; height: 180px; border: 30px solid rgba(255,255,255,.06); border-radius: 50%; }
.product-feature-side > strong { display: block; margin: 12px 0; font-size: 1.35rem; }
.product-feature-side p { color: rgba(255,255,255,.75); }
.product-feature-stat { position: absolute; left: 32px; bottom: 28px; display: flex; align-items: baseline; gap: 9px; }
.product-feature-stat b { font-size: 2.8rem; line-height: 1; color: #FFFFFF; }
.product-feature-stat small { color: rgba(255,255,255,.68); }
.product-directory-nav { display: grid; grid-template-columns: repeat(5, 1fr); margin-top: 24px; overflow: hidden; background: var(--bg-soft); border: 1px solid var(--border); border-radius: var(--radius-md); }
.product-directory-nav a { display: flex; align-items: center; justify-content: space-between; padding: 15px 16px; color: var(--text-secondary); font-size: .78rem; font-weight: 700; border-right: 1px solid var(--border); }
.product-directory-nav a:last-child { border-right: 0; }
.product-directory-nav a:hover { color: var(--primary); background: #FFFFFF; }
.product-directory-nav span { color: var(--primary); font-size: .68rem; }
.product-directory { padding: 0 0 68px; background: var(--bg-soft); }
.product-category { scroll-margin-top: 86px; padding-top: 64px; }
.product-category-header { display: grid; grid-template-columns: 170px 1fr; gap: 30px; align-items: stretch; margin-bottom: 26px; }
.product-category-stat { display: flex; flex-direction: column; justify-content: center; padding: 18px 20px; color: #FFFFFF; background: linear-gradient(135deg, var(--primary-dark), var(--primary)); border-radius: var(--radius-md); }
.product-category-stat strong { font-size: 2.4rem; line-height: 1; }
.product-category-stat small { margin-top: 7px; font-size: .72rem; opacity: .78; }
.product-category-index { display: block; margin-bottom: 8px; color: var(--primary); font-size: .72rem; font-weight: 800; letter-spacing: .1em; }
.product-category-header h2 { color: var(--text-primary); font-size: clamp(1.7rem, 3vw, 2.3rem); margin-bottom: 7px; }
.product-category-header p { max-width: 760px; color: var(--text-tertiary); line-height: 1.7; }
.product-system-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.product-system-card { position: relative; min-height: 178px; padding: 24px; overflow: hidden; background: #FFFFFF; border: 1px solid var(--border); border-radius: var(--radius-md); transition: var(--transition); }
.product-system-card::after { content: ''; position: absolute; right: -22px; bottom: -22px; width: 58px; height: 58px; border: 12px solid #F1F5F9; border-radius: 50%; }
.product-system-card:hover { border-color: var(--border-strong); box-shadow: var(--shadow-md); transform: translateY(-2px); }
.product-system-card.is-key { border-top: 3px solid var(--primary); padding-top: 22px; }
.product-system-card > span { display: block; margin-bottom: 12px; color: var(--primary); font-size: .72rem; font-weight: 800; }
.product-system-card h3 { margin-bottom: 9px; color: var(--text-primary); font-size: 1.03rem; }
.product-system-card p { position: relative; z-index: 1; color: var(--text-tertiary); font-size: .82rem; line-height: 1.65; }
.product-foundation-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.product-foundation-grid article { padding: 23px; background: #FFFFFF; border: 1px solid var(--border); border-radius: var(--radius-md); }
.product-foundation-grid span { display: block; color: #A9B8CA; font-size: .72rem; font-weight: 800; margin-bottom: 20px; }
.product-foundation-grid h3 { color: var(--text-primary); font-size: 1rem; margin-bottom: 8px; }
.product-foundation-grid p { color: var(--text-tertiary); font-size: .82rem; line-height: 1.65; }
.hub-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.hub-card { min-height: 250px; }
.hub-card-number { color: var(--accent-2); font-weight: 900; font-size: 0.82rem; margin-bottom: 12px; }
.hub-card ul { list-style: none; margin: 14px 0; }
.hub-card li { color: var(--text-tertiary); font-size: 0.84rem; padding: 3px 0 3px 16px; position: relative; }
.hub-card li::before { content: '•'; position: absolute; left: 0; color: var(--primary); }

.solution-visual-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 28px; }
.solution-visual { overflow: hidden; background: var(--bg-primary); border: 1px solid var(--border); border-radius: var(--radius-lg); }
.solution-visual img { width: 100%; height: 190px; object-fit: cover; }
.solution-visual figcaption { padding: 18px; }
.solution-visual strong { display: block; color: var(--text-primary); margin-bottom: 6px; }
.solution-visual span { color: var(--text-tertiary); font-size: 0.84rem; line-height: 1.6; }

.architecture-stack { display: grid; gap: 10px; margin-top: 28px; }
.architecture-layer { display: grid; grid-template-columns: 150px 1fr; gap: 22px; align-items: center; padding: 18px 22px; background: var(--bg-primary); border: 1px solid var(--border); border-left: 4px solid var(--primary); border-radius: var(--radius-md); }
.architecture-layer strong { color: var(--primary); }
.architecture-layer span { color: var(--text-secondary); font-size: 0.88rem; }

.case-library { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.case-detail-card { scroll-margin-top: 90px; background: var(--bg-primary); border: 1px solid var(--border); border-radius: var(--radius-lg); overflow: hidden; }
.case-detail-card img { width: 100%; height: 220px; object-fit: cover; }
.case-detail-content { padding: 26px; }
.case-detail-content h2 { color: var(--text-primary); font-size: 1.35rem; margin: 10px 0; }
.case-detail-content p { color: var(--text-secondary); line-height: 1.75; }
.case-meta { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.case-meta span { background: var(--bg-soft); color: var(--primary); padding: 5px 10px; border-radius: 100px; font-size: 0.75rem; }
@media (max-width: 992px) {
    .topic-grid { grid-template-columns: repeat(2, 1fr); }
    .detail-card-grid { grid-template-columns: repeat(2, 1fr); }
    .detail-flow { grid-template-columns: repeat(2, 1fr); }
    .detail-intro { grid-template-columns: 1fr; }
    .case-library { grid-template-columns: 1fr; }
    .product-feature-grid { grid-template-columns: 1fr; }
    .product-feature-side { min-height: 250px; }
    .product-directory-nav { grid-template-columns: repeat(2, 1fr); }
    .product-directory-nav a { border-bottom: 1px solid var(--border); }
    .product-system-grid, .product-foundation-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
    .topic-grid, .detail-card-grid, .detail-flow, .hub-grid, .solution-visual-grid { grid-template-columns: 1fr; }
    .partners-row { align-items: stretch; flex-direction: column; gap: 16px; }
    .partner-logo { min-width: 0; padding: 16px; }
    .partner-logo img { width: 100%; max-width: 360px; }
    .partner-logo span { display: none; }
    .subpage-hero { min-height: 500px; padding-top: 96px; }
    .subpage-hero h1 { font-size: 2.25rem; }
    .detail-section { padding: 44px 0; }
    .topic-card { min-height: 210px; }
    .architecture-layer { grid-template-columns: 1fr; gap: 6px; }
    .product-feature-main { grid-template-columns: 1fr; }
    .product-feature-main img { height: 190px; }
    .product-feature-main > div { padding: 24px; }
    .product-directory-nav, .product-system-grid, .product-foundation-grid { grid-template-columns: 1fr; }
    .product-directory-nav a { border-right: 0; }
    .product-category { padding-top: 46px; }
    .product-category-header { grid-template-columns: 1fr; gap: 6px; }
}