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

:root {
    /* Colors — 灵七智能品牌：青 / 蓝 / 橙 */
    --bg-primary: #05070C;
    --bg-secondary: #0A1018;
    --bg-card: rgba(255, 255, 255, 0.03);
    --bg-card-hover: rgba(255, 255, 255, 0.06);
    --border-color: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(255, 255, 255, 0.15);
    --text-primary: #F4F7FB;
    --text-secondary: #9AA8BC;
    --text-muted: #6B788C;
    --accent-blue: #0055FF;
    --accent-cyan: #00CCFF;
    --accent-orange: #FF8800;
    --accent-amber: #FFB84D;
    /* 兼容旧变量名 */
    --accent-purple: var(--accent-blue);
    --accent-pink: var(--accent-orange);
    --accent-green: var(--accent-amber);
    --gradient-1: linear-gradient(135deg, #00CCFF, #0055FF);
    --gradient-2: linear-gradient(135deg, #0055FF, #FF8800);
    --gradient-3: linear-gradient(135deg, #00CCFF, #FF8800);
    --font-sans: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-display: 'Outfit', 'Noto Sans SC', sans-serif;

    /* Spacing */
    --container-max: 1120px;
    --nav-height: 64px;
    --copyright-height: 44px;

    /* Transitions */
    --t-fast: 0.18s cubic-bezier(0.4, 0, 0.2, 1);
    --t-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --t-slow: 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

html {
    scroll-behavior: auto;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow: hidden;
    height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.bg-grid {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    background-size: 72px 72px;
    mask-image: radial-gradient(ellipse 70% 60% at 50% 30%, #000 20%, transparent 75%);
    -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 30%, #000 20%, transparent 75%);
    opacity: 0.9;
}

.page-panel {
    display: none;
    position: relative;
    z-index: 1;
    height: calc(100vh - var(--nav-height) - var(--copyright-height));
    margin-top: var(--nav-height);
    margin-bottom: var(--copyright-height);
    overflow-y: auto;
    overflow-x: hidden;
    -webkit-overflow-scrolling: touch;
}

.page-panel.is-active {
    display: block;
    animation: panel-fade 0.35s ease;
}

@keyframes panel-fade {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

.page-panel.hero {
    margin-top: 0;
    height: calc(100vh - var(--copyright-height));
    margin-bottom: var(--copyright-height);
    display: none;
    overflow-x: hidden;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
}

.page-panel.hero.is-active {
    display: flex;
}

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

ul {
    list-style: none;
}

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

/* ===== Particle Canvas ===== */
#particle-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
    opacity: 0.16;
}

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

.section {
    position: relative;
    z-index: 1;
    padding: 40px 0 48px;
}

.page-panel.section {
    padding-top: 36px;
}

/* ===== Section Header ===== */
.section-header {
    text-align: center;
    max-width: 560px;
    margin: 0 auto 36px;
}

.section-tag {
    display: inline-block;
    font-family: var(--font-display);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--accent-cyan);
    margin-bottom: 12px;
    padding: 0;
    border: none;
    background: none;
}

.section-title {
    font-size: clamp(26px, 3.6vw, 36px);
    font-weight: 700;
    line-height: 1.25;
    letter-spacing: -0.02em;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.section-desc {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ===== Navbar ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--nav-height);
    z-index: 1000;
    transition: all var(--t-base);
    background: rgba(5, 7, 12, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
}

.nav-container {
    max-width: var(--container-max);
    height: 100%;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.btn-nav {
    padding: 8px 16px;
    font-size: 13px;
    border-radius: 8px;
    flex-shrink: 0;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 14px;
    min-width: 0;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    transition: opacity var(--t-fast);
    flex-shrink: 0;
}

.nav-logo:hover {
    opacity: 0.85;
}

.nav-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 0;
    background: none;
    border: none;
    border-radius: 0;
    font-size: 12px;
    font-weight: 500;
    color: var(--text-muted);
    white-space: nowrap;
}

.logo-img {
    height: 32px;
    width: auto;
    display: block;
}

.logo-img--footer {
    height: 32px;
}

.nav-menu {
    display: flex;
    gap: 8px;
}

.nav-link {
    position: relative;
    padding: 8px 14px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    transition: color var(--t-fast);
    border-radius: 8px;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--gradient-1);
    border-radius: 2px;
    transition: all var(--t-base);
    transform: translateX(-50%);
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-primary);
}

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all var(--t-fast);
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}
.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}
.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 11px 22px;
    font-size: 14px;
    font-weight: 500;
    border-radius: 10px;
    cursor: pointer;
    transition: background var(--t-base), border-color var(--t-base), color var(--t-base), box-shadow var(--t-base);
    border: none;
    white-space: nowrap;
}

.btn-primary {
    background: var(--accent-blue);
    color: #fff;
    box-shadow: 0 1px 0 rgba(255, 255, 255, 0.12) inset, 0 8px 24px rgba(0, 85, 255, 0.28);
}

.btn-primary:hover {
    background: #1463ff;
    box-shadow: 0 1px 0 rgba(255, 255, 255, 0.14) inset, 0 10px 28px rgba(0, 85, 255, 0.36);
}

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

.btn-ghost:hover {
    background: rgba(255, 255, 255, 0.04);
    border-color: var(--border-hover);
}

.btn-lg {
    padding: 16px 36px;
    font-size: 16px;
}

.btn-sm {
    padding: 10px 22px;
    font-size: 14px;
    border-radius: 10px;
}

/* ===== Hero ===== */
.hero {
    position: relative;
    z-index: 1;
    width: 100%;
    min-height: 100%;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: calc(var(--nav-height) + 16px) 28px 16px;
    overflow: visible;
}

.hero-inner {
    width: min(1180px, 100%);
    min-height: calc(100vh - var(--nav-height) - var(--copyright-height) - 32px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 28px;
}

.hero-bg-glow {
    position: absolute;
    top: 12%;
    left: 50%;
    transform: translate(-50%, 0);
    width: min(920px, 120%);
    height: 320px;
    background:
        radial-gradient(ellipse 60% 50% at 50% 40%, rgba(0, 85, 255, 0.14), transparent 70%),
        radial-gradient(ellipse 40% 40% at 70% 60%, rgba(0, 204, 255, 0.06), transparent 70%);
    z-index: -1;
    pointer-events: none;
}

.hero-content {
    max-width: 720px;
    width: 100%;
    animation: fade-up 0.7s var(--t-slow) both;
    flex-shrink: 0;
}

.hero-brand {
    font-family: var(--font-display);
    font-size: clamp(32px, 4.6vw, 48px);
    font-weight: 700;
    letter-spacing: -0.04em;
    line-height: 1.05;
    margin-bottom: 6px;
    color: var(--text-primary);
    background: linear-gradient(180deg, #FFFFFF 20%, #8FA3BF 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.badge-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent-cyan);
    flex-shrink: 0;
}

.hero-title {
    font-size: clamp(17px, 2.2vw, 22px);
    font-weight: 600;
    line-height: 1.35;
    letter-spacing: -0.01em;
    margin-bottom: 6px;
    color: var(--text-primary);
}

.gradient-text {
    background: linear-gradient(135deg, #00CCFF 0%, #0055FF 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.gradient-text-2 {
    background: linear-gradient(135deg, #FF8800 0%, #FFB84D 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 0;
    max-width: 460px;
    margin-left: auto;
    margin-right: auto;
}

/* ===== Hero Product Carousel ===== */
.hero-carousel {
    position: relative;
    width: 100%;
    margin-top: 0;
    flex: 0 1 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 280px;
    animation: fade-up 0.75s var(--t-slow) 0.08s both;
}

.carousel-viewport {
    width: 100%;
    overflow: hidden;
    padding: 8px 8px 0;
}

.carousel-track {
    display: flex;
    gap: 20px;
    transition: transform 0.45s cubic-bezier(0.22, 1, 0.36, 1);
    will-change: transform;
}

.carousel-slide {
    position: relative;
    flex: 0 0 calc((100% - 40px) / 3);
    min-width: calc((100% - 40px) / 3);
    text-align: left;
    padding: 28px 24px 24px;
    border: 1px solid var(--border-color);
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.02);
    overflow: hidden;
    cursor: pointer;
    transition: border-color var(--t-base), background var(--t-base), opacity var(--t-base), box-shadow var(--t-base);
    opacity: 0.72;
    min-height: 240px;
}

.carousel-slide.is-active {
    opacity: 1;
    border-color: color-mix(in srgb, var(--accent) 55%, transparent);
    background: linear-gradient(180deg, color-mix(in srgb, var(--accent) 12%, transparent), rgba(255,255,255,0.02));
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.25);
}

.carousel-slide:hover {
    opacity: 1;
    border-color: color-mix(in srgb, var(--accent) 40%, transparent);
}

.carousel-slide-glow {
    display: none;
}

.carousel-slide-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    background: var(--accent-light);
    border: 1px solid color-mix(in srgb, var(--accent) 35%, transparent);
    margin-bottom: 0;
}

.carousel-slide-icon--inline {
    margin-bottom: 0;
    flex-shrink: 0;
}

.carousel-slide-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 18px;
    min-height: 48px;
}

.carousel-product-logo {
    height: 48px;
    width: auto;
    max-width: 56px;
    object-fit: contain;
    display: block;
    flex-shrink: 0;
}

.carousel-product-logo--wide {
    height: 42px;
    max-width: 200px;
}

.carousel-product-en {
    font-size: 13px;
    color: var(--text-muted);
    letter-spacing: 0.5px;
}

.carousel-slide-brand .carousel-slide-name {
    margin-bottom: 0;
}

.carousel-slide-name {
    display: flex;
    align-items: baseline;
    gap: 10px;
    margin-bottom: 8px;
}

.carousel-slide-name h3 {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary);
}

.carousel-slide-name span {
    font-size: 13px;
    color: var(--text-muted);
    letter-spacing: 0.5px;
}

.carousel-slide-tag {
    font-size: 14px;
    font-weight: 500;
    color: var(--accent);
    margin-bottom: 10px;
}

.carousel-slide-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 18px;
    min-height: 72px;
    display: block;
    -webkit-line-clamp: unset;
    overflow: visible;
}

.carousel-slide-link {
    font-size: 14px;
    font-weight: 500;
    color: var(--accent);
}

.carousel-btn {
    position: absolute;
    top: 46%;
    transform: translateY(-50%);
    z-index: 2;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 1px solid var(--border-color);
    background: rgba(5, 7, 12, 0.65);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    backdrop-filter: blur(10px);
    transition: border-color var(--t-fast), color var(--t-fast), background var(--t-fast);
}

.carousel-btn:hover {
    border-color: var(--border-hover);
    color: #fff;
    background: rgba(255, 255, 255, 0.06);
}

.carousel-btn--prev { left: -4px; }
.carousel-btn--next { right: -4px; }

.carousel-dots {
    display: flex;
    gap: 8px;
    margin-top: 16px;
}

.carousel-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    border: none;
    padding: 0;
    background: rgba(255, 255, 255, 0.22);
    cursor: pointer;
    transition: all var(--t-fast);
}

.carousel-dot.is-active {
    width: 18px;
    border-radius: 999px;
    background: var(--accent-cyan);
}

.hero-bottom-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 0;
    padding-top: 4px;
    padding-bottom: 0;
    width: 100%;
    flex-shrink: 0;
    animation: fade-up 0.75s var(--t-slow) 0.14s both;
}

.footer-stats,
.hero-stats {
    display: flex;
    align-items: center;
    gap: 40px;
    justify-content: center;
}

.footer-stats {
    padding: 36px 0;
    border-top: 1px solid var(--border-color);
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 36px;
    font-weight: 900;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.stat-label {
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 8px;
    letter-spacing: 1px;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--border-color);
}

.scroll-indicator {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    animation: fade-up 1s var(--t-slow) 0.5s both;
}

.scroll-indicator span {
    font-size: 12px;
    color: var(--text-muted);
    letter-spacing: 1px;
}

.mouse {
    width: 24px;
    height: 40px;
    border: 2px solid var(--text-muted);
    border-radius: 12px;
    display: flex;
    justify-content: center;
    padding-top: 6px;
}

.wheel {
    width: 4px;
    height: 8px;
    background: var(--text-muted);
    border-radius: 2px;
    animation: scroll-wheel 1.5s ease infinite;
}

@keyframes scroll-wheel {
    0% { opacity: 1; transform: translateY(0); }
    100% { opacity: 0; transform: translateY(12px); }
}

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

/* ===== Products ===== */
.products .section-header {
    margin-bottom: 18px;
}

.product-icons {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin: 0 auto 28px;
    max-width: 720px;
}

.product-icon-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    padding: 12px 10px 10px;
    border: 1px solid transparent;
    border-bottom: 2px solid transparent;
    border-radius: 0;
    background: transparent;
    transition: border-color var(--t-base), background var(--t-base), color var(--t-base);
    text-align: center;
    cursor: pointer;
    color: inherit;
    font: inherit;
    width: 100%;
}

.product-icon-item:hover,
.product-icon-item.is-active {
    border-color: transparent;
    border-bottom-color: var(--accent);
    background: linear-gradient(180deg, var(--accent-light), transparent);
    box-shadow: none;
    transform: none;
}

.product-icon-badge {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 14px;
    background: var(--accent-light);
    border: 1px solid color-mix(in srgb, var(--accent) 40%, transparent);
}

.product-icon-badge--wide {
    width: auto;
    min-width: 56px;
    max-width: 100%;
    height: 44px;
    padding: 0 10px;
}

.product-logo-img {
    height: 32px;
    width: auto;
    max-width: 40px;
    object-fit: contain;
    display: block;
}

.product-logo-img--wide {
    height: 28px;
    max-width: 140px;
}

.product-icon-name {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-primary);
}

.product-icon-en {
    font-size: 11px;
    color: var(--text-muted);
    letter-spacing: 0.5px;
}

.products-detail,
.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    position: relative;
    z-index: 1;
}

.products-showcase {
    position: relative;
    z-index: 1;
}

.product-panel {
    display: none;
    padding: 8px 0 12px;
    border: none;
    border-top: 1px solid var(--border-color);
    border-radius: 0;
    background: transparent;
    animation: panel-fade 0.3s ease;
}

.product-panel.is-active {
    display: block;
}

.product-panel-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 18px;
    flex-wrap: wrap;
}

.product-panel-head .product-header {
    margin-bottom: 0;
}

.product-panel-head .product-tagline {
    margin-top: 8px;
    margin-bottom: 0;
}

.product-panel-head .btn {
    background: var(--accent);
    box-shadow: none;
}

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

.viz-modules--5 {
    grid-template-columns: repeat(5, 1fr);
}

.viz-module {
    position: relative;
    padding: 20px 16px 16px;
    border-radius: 16px;
    background: rgba(5, 7, 12, 0.5);
    border: 1px solid var(--border-color);
    min-height: 148px;
    overflow: hidden;
    transition: border-color var(--t-fast), transform var(--t-fast);
}

.viz-module:hover {
    border-color: color-mix(in srgb, var(--accent) 45%, transparent);
    transform: translateY(-2px);
}

.viz-num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 24px;
    padding: 0 8px;
    margin-bottom: 12px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.5px;
    color: var(--accent);
    background: color-mix(in srgb, var(--accent) 14%, transparent);
    border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent);
}

.viz-module h3 {
    font-size: 17px;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.viz-module > p {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.viz-points {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 12px;
}

.viz-points span {
    font-size: 11px;
    color: var(--text-muted);
    padding: 3px 8px;
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.04);
}

.viz-flow {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin: 0 0 16px;
    flex-wrap: wrap;
}

.viz-flow span {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
    padding: 0;
    border-radius: 0;
    background: none;
    border: none;
}

.viz-flow i {
    width: 24px;
    height: 1px;
    background: var(--accent);
    opacity: 0.45;
    display: block;
}

.viz-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 14px;
    justify-content: center;
}

.viz-tags span {
    font-size: 12px;
    color: var(--text-primary);
    padding: 6px 12px;
    border-radius: 999px;
    border: 1px solid color-mix(in srgb, var(--accent) 35%, transparent);
    background: color-mix(in srgb, var(--accent) 10%, transparent);
}

.product-lead {
    margin-bottom: 12px;
    max-width: 920px;
}

.doc-sections {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.doc-section {
    padding: 16px 0 18px;
    border-radius: 0;
    background: transparent;
    border: none;
    border-bottom: 1px solid var(--border-color);
}

.doc-section:last-child {
    border-bottom: none;
}

.doc-section-head {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    margin-bottom: 12px;
}

.doc-section-head h3 {
    font-size: 18px;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.doc-value {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.7;
}

.doc-value strong {
    color: var(--text-primary);
}

.doc-block {
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--border-color);
}

.doc-block h4 {
    font-size: 13px;
    color: var(--accent);
    margin-bottom: 8px;
}

.doc-block > p,
.doc-list,
.doc-adv p,
.doc-adv ul {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.7;
}

.doc-two,
.doc-summary {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.doc-summary .doc-block {
    margin-top: 0;
    padding: 12px 0;
    border: none;
    border-top: 1px solid var(--border-color);
    border-radius: 0;
    background: transparent;
}

.doc-adv-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.doc-adv-grid--5 {
    grid-template-columns: repeat(5, 1fr);
}

.doc-adv {
    padding: 4px 0 8px;
    border-radius: 0;
    background: transparent;
    border: none;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.doc-adv strong {
    display: block;
    font-size: 13px;
    color: var(--text-primary);
    margin-bottom: 8px;
    line-height: 1.5;
}

.doc-adv ul,
.doc-list {
    padding-left: 16px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.doc-list {
    gap: 8px;
}

.doc-list strong {
    color: var(--text-primary);
}

.doc-adv li,
.doc-list li {
    list-style: disc;
}

.capability-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.capability-card,
.layer-card,
.advantage-card {
    background: rgba(5, 7, 12, 0.45);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 18px 16px;
}

.capability-label {
    display: inline-block;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 1px;
    color: var(--accent);
    margin-bottom: 10px;
    padding: 4px 10px;
    border-radius: 999px;
    border: 1px solid color-mix(in srgb, var(--accent) 40%, transparent);
    background: color-mix(in srgb, var(--accent) 12%, transparent);
}

.capability-card h3,
.layer-card h3 {
    font-size: 18px;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.capability-value {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 14px;
}

.capability-block {
    margin-top: 14px;
    padding-top: 12px;
    border-top: 1px solid var(--border-color);
}

.capability-block h4 {
    font-size: 13px;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.capability-block > p {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.65;
}

.chip-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0 8px;
    row-gap: 6px;
}

.chip-row span {
    font-size: 12px;
    color: var(--text-secondary);
    padding: 0;
    border-radius: 0;
    background: none;
    border: none;
}

.chip-row span:not(:last-child)::after {
    content: '·';
    margin-left: 8px;
    color: var(--text-muted);
}

.advantage-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.advantage-item strong {
    display: block;
    font-size: 13px;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.advantage-item p {
    font-size: 12px;
    color: var(--text-secondary);
    line-height: 1.6;
}

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

.advantage-grid--compact {
    grid-template-columns: repeat(5, 1fr);
}

.advantage-card strong {
    display: block;
    font-size: 15px;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.advantage-card span {
    display: block;
    font-size: 12px;
    color: var(--accent);
    margin-bottom: 8px;
}

.advantage-card p {
    font-size: 12px;
    color: var(--text-secondary);
    line-height: 1.6;
}

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

.scene-table {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.scene-row {
    display: grid;
    grid-template-columns: 72px 1fr;
    gap: 10px;
    align-items: start;
}

.scene-row span {
    font-size: 12px;
    font-weight: 600;
    color: var(--accent);
    padding-top: 2px;
}

.scene-row p,
.bullet-list {
    font-size: 12px;
    color: var(--text-secondary);
    line-height: 1.65;
}

.bullet-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding-left: 0;
}

.bullet-list li {
    list-style: none;
    position: relative;
    padding-left: 12px;
}

.bullet-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.55em;
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--accent);
}

.bullet-list strong {
    color: var(--text-primary);
}

.product-icon--logo {
    background: transparent;
    border-color: color-mix(in srgb, var(--accent) 35%, transparent);
    width: auto;
    min-width: 56px;
    padding: 8px 12px;
}

.product-header--brand {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    margin-bottom: 16px;
    position: relative;
    z-index: 2;
}

.product-brand-logo {
    height: 36px;
    width: auto;
    max-width: 100%;
    object-fit: contain;
    display: block;
}

.product-card {
    position: relative;
    z-index: 1;
    isolation: isolate;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 28px 24px;
    overflow: hidden;
    transition: all var(--t-slow);
    backdrop-filter: blur(20px);
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    opacity: 0;
    transition: opacity var(--t-base);
}

.product-card:hover {
    border-color: var(--accent);
    background: var(--bg-card-hover);
    transform: translateY(-8px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.product-card:hover::before {
    opacity: 1;
}

.product-glow {
    position: absolute;
    top: -40px;
    right: -40px;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, var(--accent-light) 0%, transparent 70%);
    opacity: 0;
    transition: opacity var(--t-slow);
    pointer-events: none;
    z-index: 0;
}

.product-card:hover .product-glow {
    opacity: 1;
}

.product-header {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 16px;
    position: relative;
    z-index: 2;
    min-width: 0;
}

.product-header .product-name {
    min-width: 0;
}

.product-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 14px;
    background: var(--accent-light);
    border: 1px solid var(--accent);
    flex-shrink: 0;
}

.product-name h3 {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.2;
}

.product-en {
    font-size: 13px;
    color: var(--text-muted);
    letter-spacing: 1px;
}

.product-tagline {
    font-size: 14px;
    font-weight: 500;
    color: var(--accent);
    margin-bottom: 12px;
    letter-spacing: 0.5px;
}

.product-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 24px;
}

.product-features {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 28px;
}

.product-features li {
    display: flex;
    gap: 12px;
    align-items: flex-start;
}

.feature-icon {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    background: var(--accent-light);
    color: var(--accent);
}

.product-features strong {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.product-features p {
    font-size: 13px;
    color: var(--text-muted);
    line-height: 1.5;
}

.product-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 500;
    color: var(--accent);
    transition: gap var(--t-fast);
}

.product-link:hover {
    gap: 10px;
}

/* ===== Technology ===== */
.tech-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.tech-card {
    text-align: left;
    padding: 8px 4px 16px;
    background: transparent;
    border: none;
    border-top: 1px solid var(--border-color);
    border-radius: 0;
    transition: border-color var(--t-base);
}

.tech-card:hover {
    border-top-color: color-mix(in srgb, var(--c) 55%, var(--border-color));
    background: transparent;
    transform: none;
}

.tech-icon-wrap {
    width: 40px;
    height: 40px;
    margin: 0 0 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    background: transparent;
    color: var(--c);
    border: 1px solid color-mix(in srgb, var(--c) 28%, transparent);
}

.tech-card h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.tech-card p {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.65;
}

/* ===== About ===== */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.about-left .section-tag {
    margin-bottom: 16px;
}

.about-left .section-title {
    text-align: left;
    margin-bottom: 24px;
}

.about-text {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.9;
    margin-bottom: 16px;
}

.about-values {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-top: 32px;
}

.value-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    font-size: 14px;
    color: var(--text-primary);
}

.value-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

/* About Visual - Orbital Animation */
.about-right {
    display: flex;
    justify-content: center;
    align-items: center;
}

.about-visual {
    position: relative;
    width: 380px;
    height: 380px;
}

.orbit-ring {
    position: absolute;
    top: 50%;
    left: 50%;
    border-radius: 50%;
    border: 1px solid var(--border-color);
    transform: translate(-50%, -50%);
}

.orbit-1 {
    width: 160px;
    height: 160px;
    border-color: rgba(0, 85, 255, 0.2);
    animation: rotate 20s linear infinite;
}

.orbit-2 {
    width: 260px;
    height: 260px;
    border-color: rgba(0, 204, 255, 0.15);
    animation: rotate 30s linear infinite reverse;
}

.orbit-3 {
    width: 360px;
    height: 360px;
    border-color: rgba(255, 136, 0, 0.1);
    animation: rotate 40s linear infinite;
}

@keyframes rotate {
    from { transform: translate(-50%, -50%) rotate(0deg); }
    to { transform: translate(-50%, -50%) rotate(360deg); }
}

.orbit-core {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(0, 85, 255, 0.3), rgba(0, 204, 255, 0.1));
    border: 1px solid rgba(0, 85, 255, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
}

.core-inner {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--gradient-1);
    box-shadow: 0 0 30px rgba(0, 85, 255, 0.5);
    animation: core-pulse 3s ease-in-out infinite;
}

@keyframes core-pulse {
    0%, 100% { transform: scale(1); box-shadow: 0 0 30px rgba(0, 85, 255, 0.5); }
    50% { transform: scale(1.15); box-shadow: 0 0 50px rgba(0, 85, 255, 0.8); }
}

.orbit-node {
    position: absolute;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 72px;
    height: 72px;
    border-radius: 50%;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-primary);
    backdrop-filter: blur(10px);
}

.node-1 {
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) translateX(-80px);
    background: rgba(0, 85, 255, 0.15);
    border: 1px solid rgba(0, 85, 255, 0.4);
    animation: orbit-1-pos 20s linear infinite;
}

.node-2 {
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) translateX(130px);
    background: rgba(0, 204, 255, 0.15);
    border: 1px solid rgba(0, 204, 255, 0.4);
    animation: orbit-2-pos 30s linear infinite reverse;
}

.node-3 {
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) translateY(-180px);
    background: rgba(255, 136, 0, 0.15);
    border: 1px solid rgba(255, 136, 0, 0.4);
    animation: orbit-3-pos 40s linear infinite;
}

@keyframes orbit-1-pos {
    from { transform: translate(-50%, -50%) rotate(0deg) translateX(80px) rotate(0deg); }
    to { transform: translate(-50%, -50%) rotate(360deg) translateX(80px) rotate(-360deg); }
}

@keyframes orbit-2-pos {
    from { transform: translate(-50%, -50%) rotate(0deg) translateX(130px) rotate(0deg); }
    to { transform: translate(-50%, -50%) rotate(360deg) translateX(130px) rotate(-360deg); }
}

@keyframes orbit-3-pos {
    from { transform: translate(-50%, -50%) rotate(0deg) translateY(-180px) rotate(0deg); }
    to { transform: translate(-50%, -50%) rotate(360deg) translateY(-180px) rotate(-360deg); }
}

/* ===== About Page (new) ===== */
.about-page .section-header {
    margin-bottom: 20px;
}

.about-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
    margin-bottom: 10px;
}

.about-scroll-tip {
    text-align: center;
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 18px;
}

.about-tab {
    border: none;
    border-bottom: 2px solid transparent;
    background: transparent;
    color: var(--text-muted);
    border-radius: 0;
    padding: 8px 12px;
    font-size: 14px;
    cursor: pointer;
    transition: color var(--t-fast), border-color var(--t-fast);
}

.about-tab:hover,
.about-tab.is-active {
    color: #fff;
    border-color: var(--accent-cyan);
    background: transparent;
}

.about-panel {
    display: none;
    animation: panel-fade 0.3s ease;
}

.about-panel.is-active {
    display: block;
}

.about-who-layout {
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: 28px;
    align-items: center;
}

.about-intro-card {
    padding: 8px 4px 0;
    border-radius: 0;
    border: none;
    background: transparent;
}

.about-who-layout .about-capability-row {
    grid-template-columns: repeat(3, 1fr);
}

.about-who-layout .about-visual {
    width: min(420px, 100%);
    height: auto;
    margin: 0 auto;
}

.about-visual--image {
    width: 100%;
    max-width: 460px;
    height: auto;
    display: flex;
    align-items: center;
    justify-content: center;
}

.about-platform-img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: contain;
    filter: drop-shadow(0 12px 40px rgba(0, 85, 255, 0.2));
}

.about-intro-badge {
    display: inline-block;
    font-family: var(--font-display);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.08em;
    color: var(--accent-cyan);
    padding: 0;
    border: none;
    margin-bottom: 10px;
}

.about-intro-card h3 {
    font-size: 24px;
    margin-bottom: 12px;
}

.about-intro-card > p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 18px;
}

.about-intro-card strong {
    color: var(--text-primary);
}

.about-capability-row {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 10px;
    margin-bottom: 14px;
}

.about-cap-item {
    padding: 12px 8px;
    border-radius: 0;
    background: transparent;
    border: none;
    border-top: 1px solid var(--border-color);
    text-align: left;
}

.about-cap-item span {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.about-cap-item p {
    font-size: 12px;
    color: var(--text-muted);
}

.about-note {
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 0 !important;
}

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

.about-matrix-card {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 18px 4px 16px;
    border-radius: 0;
    border: none;
    border-top: 1px solid color-mix(in srgb, var(--accent) 45%, var(--border-color));
    background: transparent;
    transition: border-color var(--t-fast), opacity var(--t-fast);
}

.about-matrix-card:hover {
    border-top-color: var(--accent);
}

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

.about-matrix-card p {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.6;
    flex: 1;
}

.about-matrix-card > span {
    font-size: 13px;
    color: var(--accent);
    font-weight: 600;
}

.about-matrix-icon {
    height: 40px;
    width: auto;
    max-width: 48px;
    object-fit: contain;
}

.about-matrix-agent {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    color: #fff;
    background: linear-gradient(135deg, #FF8800, #FFB84D);
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-bottom: 16px;
}

.about-stat {
    padding: 16px 4px;
    border-radius: 0;
    background: transparent;
    border: none;
    border-top: 1px solid var(--border-color);
    text-align: left;
}

.about-stat strong {
    display: block;
    font-family: var(--font-display);
    font-size: 34px;
    font-weight: 700;
    letter-spacing: -0.03em;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.about-stat span {
    display: block;
    font-size: 14px;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.about-stat p {
    font-size: 12px;
    color: var(--text-muted);
    line-height: 1.5;
}

.about-cases {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.about-case {
    padding: 16px 0 18px;
    border-radius: 0;
    background: transparent;
    border: none;
    border-top: 1px solid var(--border-color);
}

.about-case-tag {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    color: var(--accent);
    padding: 0;
    border: none;
    background: none;
    margin-bottom: 8px;
}

.about-case h4 {
    font-size: 15px;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.about-case > p {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 12px;
}

.about-metrics {
    display: flex;
    flex-wrap: wrap;
    gap: 0 8px;
    row-gap: 6px;
}

.about-metrics span {
    font-size: 12px;
    color: var(--text-secondary);
    padding: 0;
    border-radius: 0;
    background: none;
    border: none;
}

.about-metrics span:not(:last-child)::after {
    content: '·';
    margin-left: 8px;
    color: var(--text-muted);
}

.about-why-quote {
    text-align: left;
    padding: 8px 0 20px;
    margin-bottom: 8px;
    border-radius: 0;
    border: none;
    border-bottom: 1px solid var(--border-color);
    background: transparent;
}

.about-why-quote p {
    font-size: clamp(20px, 2.8vw, 26px);
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

.about-why-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.about-why-card {
    padding: 16px 4px;
    border-radius: 0;
    background: transparent;
    border: none;
    border-top: 1px solid var(--border-color);
    text-align: left;
}

.about-why-card strong {
    display: block;
    font-size: 16px;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.about-why-card p {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ===== CTA ===== */
.cta--compact {
    padding: 56px 0 32px;
    display: flex;
    align-items: center;
}

.cta--compact > .container {
    width: 100%;
}

.cta-box {
    position: relative;
    text-align: center;
    padding: 24px 16px 8px;
    border-radius: 0;
    background: transparent;
    border: none;
    overflow: visible;
}

.cta-glow {
    position: absolute;
    top: -20%;
    left: 50%;
    transform: translateX(-50%);
    width: 480px;
    height: 280px;
    background: radial-gradient(ellipse, rgba(0, 85, 255, 0.12), transparent 70%);
    pointer-events: none;
}

.cta-title {
    position: relative;
    font-size: clamp(24px, 3.2vw, 34px);
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 12px;
}

.cta-desc {
    position: relative;
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.65;
    max-width: 480px;
    margin: 0 auto 28px;
}

.cta-actions {
    position: relative;
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 20px;
    margin-bottom: 0;
}

.cta-actions .btn-lg {
    padding: 10px 22px;
    font-size: 14px;
    border-radius: 10px;
}

.cta-actions .btn-lg svg {
    width: 15px;
    height: 15px;
}

.cta-qr {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
}

.cta-qr img {
    width: 180px;
    height: 180px;
    object-fit: contain;
    border-radius: 12px;
    background: #fff;
    padding: 10px;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
}

.cta-qr p {
    font-size: 13px;
    color: var(--text-secondary);
}

.cta-contact {
    position: relative;
    display: flex;
    gap: 32px;
    justify-content: center;
    flex-wrap: wrap;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--text-secondary);
}

.contact-item svg {
    color: var(--accent-purple);
}

/* ===== Footer ===== */
.footer {
    position: relative;
    z-index: 1;
    border-top: 1px solid var(--border-color);
    background: rgba(5, 7, 12, 0.8);
    backdrop-filter: blur(20px);
}

.footer--inline {
    border-top: none;
    background: transparent;
    backdrop-filter: none;
    margin-top: 12px;
}

.footer-top {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 32px;
    padding: 16px 0 12px;
}

.footer-brand .nav-logo {
    margin-bottom: 16px;
}

.footer-desc {
    font-size: 14px;
    color: var(--text-muted);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.footer-col h4 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.footer-col ul {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-col a {
    font-size: 14px;
    color: var(--text-secondary);
    transition: color var(--t-fast);
}

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

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 0 0;
    border-top: 1px solid var(--border-color);
    font-size: 13px;
    color: var(--text-muted);
}

.page-scroll-hint {
    position: fixed;
    left: 50%;
    bottom: calc(var(--copyright-height) + 10px);
    transform: translateX(-50%);
    z-index: 1090;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: 999px;
    border: 1px solid var(--border-color);
    background: rgba(5, 7, 12, 0.72);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    font-size: 12px;
    color: var(--text-muted);
    pointer-events: none;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--t-base), visibility var(--t-base), transform var(--t-base);
}

.page-scroll-hint.is-visible {
    opacity: 1;
    visibility: visible;
    animation: hint-bounce 1.8s ease-in-out infinite;
}

.page-scroll-hint svg {
    display: block;
}

@keyframes hint-bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(4px); }
}

.site-copyright {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1100;
    min-height: var(--copyright-height);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 10px 24px;
    padding: 10px 16px;
    background: rgba(5, 7, 12, 0.92);
    border-top: 1px solid var(--border-color);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    font-size: 12px;
    color: var(--text-muted);
    text-align: center;
}

.site-copyright a {
    color: var(--text-muted);
    transition: color var(--t-fast);
}

.site-copyright a:hover {
    color: var(--accent-cyan);
}

/* ===== Panel Reveal ===== */
.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.45s var(--t-slow), transform 0.45s var(--t-slow);
}

.reveal.visible,
.page-panel.is-active .reveal {
    opacity: 1;
    transform: translateY(0);
}

/* ===== Responsive ===== */
@media (max-width: 1100px) {
    .nav-badge {
        font-size: 11px;
        padding: 5px 10px;
    }
}

@media (max-width: 980px) {
    .carousel-slide {
        flex: 0 0 calc((100% - 20px) / 2);
        min-width: calc((100% - 20px) / 2);
        min-height: 220px;
        padding: 22px 18px;
    }

    .carousel-btn--prev { left: 0; }
    .carousel-btn--next { right: 0; }

    .capability-grid,
    .advantage-grid,
    .layer-grid,
    .viz-modules,
    .viz-modules--5,
    .doc-adv-grid,
    .doc-adv-grid--5 {
        grid-template-columns: 1fr 1fr;
    }

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

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

@media (max-width: 968px) {
    .nav-badge {
        display: none;
    }

    .hero {
        padding-top: calc(var(--nav-height) + 16px);
        padding-bottom: 16px;
    }

    .hero-inner {
        min-height: calc(100vh - var(--nav-height) - var(--copyright-height) - 32px);
        gap: 14px;
    }

    .hero-carousel {
        margin-top: 0;
        min-height: 0;
    }

    .products .section-header {
        margin-bottom: 14px;
    }

    .product-icons {
        grid-template-columns: repeat(3, 1fr);
        max-width: none;
        margin: 0 auto 22px;
        gap: 4px;
    }

    .product-icon-badge {
        width: 44px;
        height: 44px;
    }

    .product-icon-name {
        font-size: 13px;
    }

    .products-detail,
    .products-grid,
    .capability-grid,
    .advantage-grid,
    .layer-grid,
    .advantage-grid--compact,
    .viz-modules,
    .viz-modules--5,
    .doc-two,
    .doc-summary,
    .doc-adv-grid,
    .doc-adv-grid--5 {
        grid-template-columns: 1fr;
        max-width: 500px;
        margin: 0 auto;
    }

    .capability-grid,
    .advantage-grid,
    .layer-grid,
    .advantage-grid--compact,
    .viz-modules,
    .viz-modules--5,
    .doc-two,
    .doc-summary,
    .doc-adv-grid,
    .doc-adv-grid--5 {
        max-width: none;
    }

    .product-panel {
        padding: 16px;
    }

    .viz-module {
        min-height: 0;
    }

    .scene-row {
        grid-template-columns: 1fr;
        gap: 4px;
    }

    .doc-section-head {
        flex-direction: column;
    }

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

    .about-grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }

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

    .about-left .section-tag {
        display: block;
        text-align: center;
    }

    .about-visual {
        width: 300px;
        height: 300px;
    }

    .about-who-layout,
    .about-capability-row,
    .about-who-layout .about-capability-row,
    .about-matrix,
    .about-stats,
    .about-cases,
    .about-why-grid {
        grid-template-columns: 1fr;
    }

    .about-who-layout .about-right {
        order: -1;
    }

    .orbit-3 {
        width: 280px;
        height: 280px;
    }

    .footer-top {
        grid-template-columns: 1fr;
        gap: 32px;
    }
}

@media (max-width: 720px) {
    .carousel-slide {
        flex: 0 0 100%;
        min-width: 100%;
        padding: 24px 20px;
        min-height: 200px;
    }

    .carousel-slide-desc {
        min-height: 0;
    }

    .hero-carousel {
        margin-top: 0;
        min-height: 220px;
    }

    .hero-inner {
        min-height: 0;
        gap: 20px;
    }
}

@media (max-width: 640px) {
    .btn-nav {
        display: none;
    }

    .nav-menu {
        position: fixed;
        top: var(--nav-height);
        left: 0;
        width: 100%;
        flex-direction: column;
        background: rgba(5, 7, 12, 0.95);
        backdrop-filter: blur(20px);
        padding: 24px;
        gap: 4px;
        transform: translateY(-150%);
        transition: transform var(--t-base);
        border-bottom: 1px solid var(--border-color);
    }

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

    .nav-toggle {
        display: flex;
    }

    .section {
        padding: 32px 0 40px;
    }

    .hero-brand {
        font-size: clamp(30px, 10vw, 42px);
    }

    .hero-title {
        font-size: 17px;
    }

    .hero-subtitle {
        font-size: 13px;
    }

    .carousel-btn {
        display: none;
    }

    .footer-stats,
    .hero-stats {
        gap: 20px;
        flex-wrap: wrap;
    }

    .stat-number {
        font-size: 28px;
    }

    .stat-divider {
        height: 30px;
    }

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

    .cta-box {
        padding: 16px 8px 8px;
    }

    .cta-qr img {
        width: 160px;
        height: 160px;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 8px;
        text-align: center;
    }

    .site-copyright {
        flex-direction: column;
        gap: 4px;
        min-height: auto;
        padding: 8px 12px;
    }

    :root {
        --copyright-height: 56px;
    }

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

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }

    #particle-canvas {
        display: none;
    }

    .hero-content,
    .hero-carousel,
    .hero-bottom-actions,
    .page-panel.is-active,
    .product-panel,
    .about-panel,
    .page-scroll-hint.is-visible {
        animation: none !important;
    }
}