/* ========================================
   CSS Variables - yellow 配色系统
   ======================================== */
:root {
    --coral: #FF6B4A;
    --coral-light: #FF8F73;
    --amber: #F59E0B;
    --amber-light: #FBBF24;

    --ink: #0C0C0E;
    --charcoal: #1A1A1F;
    --graphite: #2D2D35;

    --cream: #FAF9F7;
    --pearl: #F5F4F2;
    --mist: #E8E6E3;

    --emerald: #10B981;
    --sapphire: #3B82F6;
    --violet: #8B5CF6;

    --text-primary: #1A1A1F;
    --text-secondary: #6B6B75;
    --text-muted: #9CA3AF;
    --text-inverse: #FAF9F7;

    --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-out-back: cubic-bezier(0.34, 1.56, 0.64, 1);

    --shadow-soft: 0 4px 24px rgba(12, 12, 14, 0.06);
    --shadow-medium: 0 8px 40px rgba(12, 12, 14, 0.08);
    --shadow-glow-coral: 0 8px 32px rgba(255, 107, 74, 0.2);
    --shadow-glow-amber: 0 8px 32px rgba(245, 158, 11, 0.2);
}

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

html { scroll-behavior: smooth; overflow-x: hidden; }

body {
    font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--cream);
    color: var(--text-secondary);
    line-height: 1.65;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* ========================================
   Ambient Background - 精致光影
   ======================================== */
.ambient-bg {
    position: fixed;
    inset: 0;
    z-index: -1;
    overflow: hidden;
    pointer-events: none;
}

.blob {
    position: absolute;
    filter: blur(120px);
    z-index: 0;
    opacity: 0.4;
    animation: ambientFloat 20s ease-in-out infinite;
}

.blob-1 {
    top: -30%; left: -15%;
    width: 900px; height: 900px;
    background: radial-gradient(circle, rgba(255, 107, 74, 0.4) 0%, rgba(245, 158, 11, 0.2) 50%, transparent 70%);
    border-radius: 50%;
}

.blob-2 {
    top: 20%; right: -20%;
    width: 700px; height: 700px;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.3) 0%, rgba(59, 130, 246, 0.2) 50%, transparent 70%);
    border-radius: 50%;
    animation-delay: -7s;
}

.blob-3 {
    bottom: -25%; left: 15%;
    width: 1000px; height: 800px;
    background: radial-gradient(circle, rgba(16, 185, 129, 0.25) 0%, rgba(59, 130, 246, 0.15) 50%, transparent 70%);
    border-radius: 50%;
    animation-delay: -14s;
}

@keyframes ambientFloat {
    0%, 100% { transform: translate(0, 0) rotate(0deg) scale(1); }
    25% { transform: translate(40px, -60px) rotate(5deg) scale(1.05); }
    50% { transform: translate(-30px, -30px) rotate(-3deg) scale(0.95); }
    75% { transform: translate(60px, 20px) rotate(3deg) scale(1.02); }
}

.grain-overlay {
    position: fixed;
    inset: 0;
    z-index: -1;
    pointer-events: none;
    opacity: 0.03;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
}

/* ========================================
   Layout
   ======================================== */
.container {
    max-width: 1180px;
    margin: 0 auto;
    padding: 0 32px;
}

.section {
    padding: 120px 0;
    position: relative;
}

/* ========================================
   Navigation
   ======================================== */
.header {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    background: rgba(250, 249, 247, 0.85);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-bottom: 1px solid rgba(12, 12, 14, 0.06);
    transition: all 0.3s var(--ease-out-expo);
}

.header.scrolled {
    background: rgba(250, 249, 247, 0.95);
    box-shadow: var(--shadow-soft);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.logo-icon {
    width: 42px; height: 42px;
    background: linear-gradient(135deg, var(--coral) 0%, var(--amber) 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-weight: 800;
    font-size: 14px;
    color: white;
    box-shadow: var(--shadow-glow-coral);
}

.logo-text {
    font-family: 'Noto Serif SC', serif;
    font-size: 20px;
    font-weight: 700;
    color: var(--ink);
    letter-spacing: 2px;
}

.nav {
    display: flex;
    align-items: center;
    gap: 40px;
}

.nav-link {
    font-family: 'DM Sans', sans-serif;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.2s ease;
}

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

.nav-cta {
    background: linear-gradient(135deg, var(--coral) 0%, var(--coral-light) 100%);
    color: white !important;
    padding: 12px 24px;
    border-radius: 12px;
    font-weight: 600;
    box-shadow: var(--shadow-glow-coral);
    transition: all 0.3s var(--ease-out-expo);
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 40px rgba(255, 107, 74, 0.3);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    padding: 8px;
    background: none;
    border: none;
    cursor: pointer;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--ink);
    border-radius: 1px;
    transition: all 0.3s ease;
}

.lang-switch {
    display: none;
    align-items: center;
    gap: 4px;
}

.lang-btn {
    padding: 6px 12px;
    border: 1px solid var(--mist);
    background: white;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s;
}

.lang-btn:hover {
    border-color: var(--coral);
    color: var(--coral);
}

.lang-btn.active {
    background: linear-gradient(135deg, var(--coral) 0%, var(--coral-light) 100%);
    border-color: var(--coral);
    color: white;
}

.side-badge {
    position: fixed;
    right: 28px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 100;
    background: linear-gradient(135deg, var(--charcoal) 0%, var(--graphite) 100%);
    padding: 16px 20px;
    border-radius: 16px;
    box-shadow: var(--shadow-medium);
    writing-mode: vertical-rl;
    font-family: 'DM Sans', sans-serif;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-inverse);
    letter-spacing: 2px;
    text-transform: uppercase;
}

/* ========================================
   Buttons
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 16px 32px;
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 15px;
    font-weight: 600;
    border-radius: 14px;
    transition: all 0.3s var(--ease-out-expo);
    white-space: nowrap;
    text-decoration: none;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--coral) 0%, var(--coral-light) 100%);
    color: white;
    box-shadow: var(--shadow-glow-coral);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 16px 48px rgba(255, 107, 74, 0.35);
}

.btn-secondary {
    background: var(--pearl);
    color: var(--ink);
    border: 1px solid var(--mist);
}

.btn-secondary:hover {
    background: white;
    border-color: var(--coral);
    color: var(--coral);
}

.btn-dark {
    background: var(--ink);
    color: var(--coral);
    border: none;
    padding: 20px 60px;
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 3px;
    text-transform: uppercase;
    transition: all 0.3s;
}

.btn-dark:hover { background: #1a1a1a; }

.btn-sm {
    padding: 12px 24px;
    font-size: 14px;
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding-top: 72px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.hero-shapes {
    position: absolute;
    inset: 0;
}

.hero-shape {
    position: absolute;
    border-radius: 50%;
    opacity: 0.1;
}

.hero-shape-1 {
    width: 600px; height: 600px;
    top: -200px; right: -100px;
    background: radial-gradient(circle, var(--coral), transparent 70%);
    animation: float1 15s ease-in-out infinite;
}

.hero-shape-2 {
    width: 400px; height: 400px;
    bottom: -100px; left: -100px;
    background: radial-gradient(circle, var(--amber), transparent 70%);
    animation: float2 18s ease-in-out infinite;
}

.hero-shape-3 {
    width: 300px; height: 300px;
    top: 40%; left: 30%;
    background: radial-gradient(circle, var(--violet), transparent 70%);
    animation: float3 12s ease-in-out infinite;
}

@keyframes float1 {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(-40px, 40px) scale(1.1); }
}

@keyframes float2 {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(30px, -30px) scale(0.95); }
}

@keyframes float3 {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(-20px, -20px) scale(1.05); }
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
    padding: 80px 0;
}

/* 徽章 */
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 10px 18px;
    background: white;
    border: 1px solid var(--mist);
    border-radius: 100px;
    font-family: 'DM Sans', sans-serif;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 32px;
    box-shadow: var(--shadow-soft);
}

.hero-badge::before {
    content: '';
    display: block;
    width: 40px;
    height: 1px;
    background: linear-gradient(90deg, var(--coral), var(--amber));
}

.hero-title {
    font-family: 'Noto Serif SC', serif;
    font-size: clamp(48px, 7vw, 80px);
    font-weight: 900;
    color: var(--ink);
    line-height: 1.05;
    margin-bottom: 28px;
    letter-spacing: -1px;
}

html.lang-en .hero-title {
    font-size: clamp(36px, 5.5vw, 64px);
}

html.lang-en .hero-title span[data-i18n="hero.title_line2"]::after,
html.lang-en .hero-title span[data-i18n="hero.title_highlight"]::after {
    content: " ";
    white-space: pre;
}

html.lang-en .side-badge {
    font-size: 11px;
    padding: 12px 16px;
}

html.lang-en .logo-text {
    font-size: 18px;
}

.hero-title .highlight {
    background: linear-gradient(135deg, var(--coral) 0%, var(--amber) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-sub {
    font-size: 18px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 48px;
    max-width: 540px;
}

.hero-actions {
    display: flex;
    align-items: center;
    gap: 32px;
    flex-wrap: wrap;
}

.btn-ghost {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: color 0.3s;
}

.btn-ghost:hover { color: var(--coral); }

/* Hero 视觉 - 企业增长驾驶舱 */
.hero-visual {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 32px;
}

.dashboard-card {
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.8);
    border-radius: 32px;
    padding: 40px;
    box-shadow: 0 8px 40px rgba(12, 12, 14, 0.08);
    width: 100%;
    max-width: 480px;
}

.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 32px;
}

.dashboard-title {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 22px;
    font-weight: 700;
    color: var(--ink);
}

.dashboard-subtitle {
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 4px;
}

.dashboard-live {
    padding: 6px 12px;
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.2);
    border-radius: 8px;
    font-size: 10px;
    font-weight: 600;
    color: var(--emerald);
    letter-spacing: 1px;
}

.dashboard-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.dashboard-item {
    background: rgba(255, 255, 255, 0.7);
    border: 1px solid rgba(255, 255, 255, 0.9);
    border-radius: 20px;
    padding: 20px;
}

.dashboard-item-label {
    font-family: 'DM Sans', sans-serif;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 8px;
}

.dashboard-item-value {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 32px;
    font-weight: 800;
    color: var(--ink);
    letter-spacing: -0.02em;
    line-height: 1;
    margin-bottom: 12px;
}

.dashboard-item:nth-child(1) .dashboard-item-value { color: var(--coral); }
.dashboard-item:nth-child(2) .dashboard-item-value { color: var(--sapphire); }
.dashboard-item:nth-child(3) .dashboard-item-value { color: var(--ink); }
.dashboard-item:nth-child(4) .dashboard-item-value { color: var(--ink); }

.dashboard-progress {
    width: 100%;
    height: 4px;
    background: var(--mist);
    border-radius: 2px;
    overflow: hidden;
}

.dashboard-progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--coral), var(--amber));
    border-radius: 2px;
    transition: width 1s ease-out;
}

.dashboard-item:nth-child(1) .dashboard-progress-bar { background: linear-gradient(90deg, var(--coral), var(--coral-light)); }
.dashboard-item:nth-child(2) .dashboard-progress-bar { background: linear-gradient(90deg, var(--sapphire), var(--violet)); }
.dashboard-item:nth-child(3) .dashboard-progress-bar { background: linear-gradient(90deg, var(--ink), var(--graphite)); }
.dashboard-item:nth-child(4) .dashboard-progress-bar { background: linear-gradient(90deg, var(--emerald), var(--sapphire)); }

.stats-row {
    display: flex;
    gap: 32px;
    padding: 24px 32px;
    background: white;
    border: 1px solid var(--mist);
    border-radius: 20px;
    box-shadow: var(--shadow-soft);
}

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

.stat-num {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 42px;
    font-weight: 800;
    color: var(--ink);
    letter-spacing: -0.03em;
    line-height: 1;
}

.stat-unit {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 20px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--coral) 0%, var(--amber) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    display: block;
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 8px;
    font-weight: 500;
}

.scroll-indicator {
    position: absolute;
    bottom: 48px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    color: var(--text-muted);
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 1.5px;
    text-transform: uppercase;
}

.scroll-arrow {
    width: 20px; height: 20px;
    border-right: 2px solid var(--text-muted);
    border-bottom: 2px solid var(--text-muted);
    transform: rotate(45deg);
    animation: scrollBounce 2s ease-in-out infinite;
}

@keyframes scrollBounce {
    0%, 100% { transform: rotate(45deg) translateY(0); opacity: 1; }
    50% { transform: rotate(45deg) translateY(8px); opacity: 0.5; }
}

/* ========================================
   Marquee
   ======================================== */
.marquee-wrap {
    overflow: hidden;
    border-top: 1px solid var(--mist);
    border-bottom: 1px solid var(--mist);
    padding: 20px 0;
    background: var(--pearl);
}

.marquee-track {
    display: flex;
    gap: 80px;
    animation: marquee 20s linear infinite;
    white-space: nowrap;
}

.marquee-item {
    font-family: 'Plus Jakarta Sans', 'Microsoft YaHei', sans-serif;
    font-size: 14px;
    color: var(--coral);
    letter-spacing: 4px;
    text-transform: uppercase;
    flex-shrink: 0;
}

@keyframes marquee {
    from { transform: translateX(0); }
    to { transform: translateX(-50%); }
}

/* ========================================
   Section Label
   ======================================== */
.section-label {
    font-family: 'DM Sans', sans-serif;
    font-size: 16px;
    letter-spacing: 4px;
    color: var(--coral);
    text-transform: uppercase;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    gap: 16px;
}

.section-label::after {
    content: '';
    display: block;
    width: 40px; height: 1px;
    background: linear-gradient(90deg, var(--coral), transparent);
}

/* ========================================
   Why Custom Section
   ======================================== */
.why-section {
    background: var(--pearl);
}

.why-section .section-label {
    color: var(--coral);
}

.why-section .section-label::after {
    background: linear-gradient(90deg, var(--coral), transparent);
}

.why-title {
    font-family: 'Noto Serif SC', serif;
    font-size: clamp(32px, 5vw, 52px);
    font-weight: 900;
    max-width: 600px;
    line-height: 1.1;
    color: var(--ink);
    margin-bottom: 60px;
}

.why-title .highlight {
    background: linear-gradient(135deg, var(--coral) 0%, var(--amber) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.why-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1px;
    background: var(--mist);
    border: 1px solid var(--mist);
    border-radius: 24px;
    overflow: hidden;
}

.why-card {
    background: white;
    padding: 48px;
    position: relative;
    overflow: hidden;
    transition: all 0.4s var(--ease-out-expo);
}

.why-card:hover {
    background: var(--pearl);
}

.why-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; height: 2px;
    background: linear-gradient(90deg, var(--coral), var(--amber));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s;
}

.why-card:hover::before { transform: scaleX(1); }

.why-num {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 72px;
    font-weight: 800;
    background: linear-gradient(135deg, rgba(255, 107, 74, 0.12), rgba(245, 158, 11, 0.08));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    margin-bottom: 24px;
}

.why-card h3 {
    font-family: 'Noto Serif SC', serif;
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--ink);
}

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

/* ========================================
   Value Section
   ======================================== */
.value-section {
    background: transparent;
}

.section-title {
    font-size: clamp(32px, 4.5vw, 48px);
    font-weight: 800;
    color: var(--ink);
    text-align: center;
    margin-bottom: 64px;
    letter-spacing: -0.03em;
    font-family: 'Plus Jakarta Sans', sans-serif;
}

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

.value-card {
    background: white;
    border: 1px solid var(--mist);
    border-radius: 28px;
    padding: 44px 32px;
    text-align: center;
    transition: all 0.4s var(--ease-out-expo);
    box-shadow: var(--shadow-soft);
}

.value-card:hover {
    transform: translateY(-8px);
    border-color: transparent;
    box-shadow: var(--shadow-medium);
}

.value-card:nth-child(1):hover { box-shadow: var(--shadow-glow-coral); }
.value-card:nth-child(2):hover { box-shadow: 0 8px 32px rgba(59, 130, 246, 0.2); }
.value-card:nth-child(3):hover { box-shadow: var(--shadow-glow-amber); }

.value-icon {
    width: 80px; height: 80px;
    margin: 0 auto 28px;
    border-radius: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.value-card:nth-child(1) .value-icon { background: linear-gradient(135deg, rgba(16, 185, 129, 0.12), rgba(59, 130, 246, 0.12)); }
.value-card:nth-child(2) .value-icon { background: linear-gradient(135deg, rgba(59, 130, 246, 0.12), rgba(139, 92, 246, 0.12)); }
.value-card:nth-child(3) .value-icon { background: linear-gradient(135deg, rgba(255, 107, 74, 0.12), rgba(245, 158, 11, 0.12)); }

.value-icon svg {
    width: 36px; height: 36px;
}

.value-card:nth-child(1) .value-icon svg { color: var(--emerald); }
.value-card:nth-child(2) .value-icon svg { color: var(--sapphire); }
.value-card:nth-child(3) .value-icon svg { color: var(--coral); }

.value-card h3 {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 22px;
    font-weight: 700;
    color: var(--ink);
    margin-bottom: 16px;
}

.value-card p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ========================================
   Arch Section
   ======================================== */
.arch-section {
    background: var(--pearl);
}

.arch-title {
    font-family: 'Noto Serif SC', serif;
    font-size: clamp(36px, 5vw, 56px);
    font-weight: 900;
    line-height: 1.1;
    max-width: 600px;
    margin-bottom: 80px;
    color: var(--ink);
}

.arch-title .highlight {
    background: linear-gradient(135deg, var(--coral), var(--amber));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.arch-diagram {
    display: grid;
    grid-template-columns: 1fr 80px 1fr;
    gap: 0;
    align-items: center;
    max-width: 1000px;
}

.arch-brain {
    border: 1px solid var(--mist);
    padding: 48px;
    position: relative;
    border-radius: 20px;
    background: white;
    box-shadow: var(--shadow-soft);
    overflow: visible;
}

.arch-brain::before {
    content: attr(data-label);
    position: absolute;
    top: -16px;
    left: 32px;
    background: var(--pearl);
    padding: 8px 16px;
    font-family: 'DM Sans', sans-serif;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 2px;
    color: var(--coral);
    text-transform: uppercase;
    border-radius: 8px;
    border: 1px solid var(--mist);
}

.arch-connector {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.conn-line {
    width: 1px;
    height: 60px;
    background: linear-gradient(to bottom, rgba(255, 107, 74, 0.5), rgba(255, 107, 74, 0.1));
}

.conn-dot {
    width: 8px; height: 8px;
    border: 1px solid var(--coral);
    border-radius: 50%;
    background: transparent;
    animation: connPulse 2s ease-in-out infinite;
}

@keyframes connPulse {
    0%, 100% { background: transparent; }
    50% { background: var(--coral); }
}

.arch-brain h3 {
    font-family: 'Plus Jakarta Sans', 'Microsoft YaHei', sans-serif;
    font-size: 28px;
    font-weight: 700;
    color: var(--coral);
    margin-bottom: 8px;
}

.arch-brain p {
    font-size: 15px;
    color: var(--text-secondary);
    margin-bottom: 32px;
    line-height: 1.6;
}

.arch-features {
    list-style: none;
}

.arch-features li {
    font-size: 14px;
    color: var(--text-secondary);
    padding: 12px 0;
    border-bottom: 1px solid var(--mist);
    display: flex;
    align-items: center;
    gap: 12px;
}

.arch-features li::before {
    content: '';
    width: 4px; height: 4px;
    background: var(--coral);
    border-radius: 50%;
    flex-shrink: 0;
}

.arch-bottom-cards {
    margin-top: 60px;
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 1px;
    background: var(--mist);
    border-radius: 16px;
    overflow: hidden;
}

.arch-bottom-card {
    background: white;
    padding: 40px;
    border-top: 3px solid transparent;
    transition: all 0.3s;
}

.arch-bottom-card:hover { border-top-color: var(--coral); }

.arch-bottom-card:nth-child(1):hover { border-top-color: var(--coral); }
.arch-bottom-card:nth-child(2):hover { border-top-color: var(--amber); }
.arch-bottom-card:nth-child(3):hover { border-top-color: var(--emerald); }

.arch-bottom-card h4 {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 40px;
    font-weight: 800;
    margin-bottom: 8px;
}

.arch-bottom-card:nth-child(1) h4 { color: var(--coral); }
.arch-bottom-card:nth-child(2) h4 { color: var(--amber); }
.arch-bottom-card:nth-child(3) h4 { color: var(--emerald); }

.arch-bottom-card p {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ========================================
   Compat Section
   ======================================== */
.compat-section {
    background: var(--pearl);
    border-top: 1px solid var(--mist);
}

.compat-title {
    font-family: 'Noto Serif SC', serif;
    font-size: clamp(28px, 4vw, 44px);
    font-weight: 900;
    max-width: 500px;
    line-height: 1.1;
    color: var(--ink);
    margin-bottom: 16px;
}

.compat-title .highlight {
    background: linear-gradient(135deg, var(--coral), var(--amber));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.compat-sub {
    font-size: 15px;
    color: var(--text-secondary);
    margin-bottom: 48px;
}

.compat-row {
    display: flex;
    align-items: center;
    gap: 0;
    overflow: hidden;
    border-radius: 20px;
    border: 1px solid var(--mist);
}

.platform-tag {
    flex: 1;
    border: 1px solid var(--mist);
    border-radius: 0;
    padding: 32px 40px;
    text-align: center;
    transition: all 0.3s;
    background: white;
}

.platform-tag:hover {
    border-color: var(--coral);
    background: rgba(255, 107, 74, 0.03);
}

.platform-name {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 32px;
    font-weight: 700;
    color: rgba(26, 26, 31, 0.15);
    transition: color 0.3s;
    letter-spacing: -1px;
}

.platform-tag:hover .platform-name { color: var(--coral); }

.platform-sub {
    font-size: 13px;
    letter-spacing: 2px;
    color: rgba(26, 26, 31, 0.3);
    text-transform: uppercase;
    margin-top: 8px;
    transition: color 0.3s;
}

.platform-tag:hover .platform-sub { color: rgba(26, 26, 31, 0.5); }

/* ========================================
   CTA Section
   ======================================== */
.cta-section {
    background: linear-gradient(135deg, var(--coral) 0%, var(--coral-light) 50%, var(--amber) 100%);
    color: white;
    text-align: center;
    padding: 120px 0;
    position: relative;
    overflow: hidden;
    z-index: 10;
}

.cta-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 30% 50%, rgba(255, 255, 255, 0.15) 0%, transparent 50%);
    pointer-events: none;
}

.cta-overline {
    font-family: 'DM Sans', sans-serif;
    font-size: 14px;
    letter-spacing: 4px;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 24px;
}

.cta-title {
    font-family: 'Noto Serif SC', serif;
    font-size: clamp(40px, 6vw, 72px);
    font-weight: 900;
    line-height: 1.0;
    color: white;
    margin-bottom: 48px;
}

.cta-section .btn-dark {
    background: white;
    color: var(--coral);
    border: none;
}

.cta-section .btn-dark:hover {
    background: var(--ink);
    color: var(--coral);
}

.cta-note {
    margin-top: 32px;
    font-size: 15px;
    color: rgba(255, 255, 255, 0.5);
    letter-spacing: 1px;
}

/* ========================================
   Footer
   ======================================== */
.footer {
    background: var(--pearl);
    padding: 48px 0;
    border-top: 1px solid var(--mist);
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-family: 'Noto Serif SC', serif;
    font-size: 18px;
    color: var(--coral);
    letter-spacing: 4px;
    text-decoration: none;
}

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

.footer-filing {
    font-size: 14px;
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.2s;
}

.lang-en .footer-filing {
    display: none;
}

.footer-filing:hover {
    color: var(--coral);
}

/* ========================================
   Modal - 预约演示弹框
   ======================================== */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(12, 12, 14, 0.6);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s var(--ease-out-expo);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: white;
    border-radius: 28px;
    padding: 48px;
    width: 100%;
    max-width: 480px;
    margin: 20px;
    transform: translateY(20px) scale(0.95);
    transition: transform 0.3s var(--ease-out-expo);
    box-shadow: 0 24px 80px rgba(12, 12, 14, 0.2);
}

.modal-overlay.active .modal {
    transform: translateY(0) scale(1);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 32px;
}

.modal-title {
    font-family: 'Noto Serif SC', serif;
    font-size: 24px;
    font-weight: 700;
    color: var(--ink);
}

.modal-close {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--pearl);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.modal-close:hover {
    background: var(--mist);
}

.modal-close svg {
    width: 20px;
    height: 20px;
    color: var(--text-secondary);
}

.modal-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-family: 'DM Sans', sans-serif;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-primary);
}

.form-group input {
    padding: 16px 18px;
    background: var(--pearl);
    border: 2px solid transparent;
    border-radius: 14px;
    font-size: 15px;
    color: var(--text-primary);
    transition: all 0.2s;
}

.form-group input::placeholder {
    color: var(--text-muted);
}

.form-group input:focus {
    outline: none;
    border-color: var(--coral);
    background: white;
}

.modal-submit {
    margin-top: 8px;
}

.modal-submit .btn {
    width: 100%;
}

.modal-note {
    font-size: 12px;
    color: var(--text-muted);
    text-align: center;
    margin-top: 16px;
}

/* ========================================
   Animations
   ======================================== */
@keyframes fadeUp {
    from { opacity: 0; transform: translateY(24px); }
    to { opacity: 1; transform: translateY(0); }
}

.hero-eyebrow,
.hero-title,
.hero-sub,
.hero-actions,
.hero-stats,
.scroll-hint {
    opacity: 0;
    animation: fadeUp 0.8s forwards;
}

.hero-eyebrow { animation-delay: 0.2s; }
.hero-title { animation-delay: 0.4s; }
.hero-sub { animation-delay: 0.6s; }
.hero-actions { animation-delay: 0.8s; }
.hero-stats { animation-delay: 1.0s; }
.scroll-hint { animation-delay: 1.2s; }

/* ========================================
   Responsive
   ======================================== */
@media (min-width: 769px) {
    .nav .lang-switch {
        display: flex;
        margin-left: 24px;
    }
}

@media (max-width: 1024px) {
    .hero-content { grid-template-columns: 1fr; gap: 60px; }
    .hero-visual { order: -1; }
    .why-grid { grid-template-columns: 1fr; }
    .value-grid { grid-template-columns: 1fr; }
    .arch-diagram { grid-template-columns: 1fr; }
    .arch-connector { display: none; }
    .compat-row { flex-direction: column; }
    .platform-tag { width: 100%; padding: 24px; border-radius: 0; }
    .platform-tag:first-child { border-radius: 20px 20px 0 0; }
    .platform-tag:last-child { border-radius: 0 0 20px 20px; }
    .arch-bottom-cards { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .nav {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 24px;
        gap: 8px;
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s var(--ease-out-expo);
        border-bottom: 1px solid var(--mist);
        box-shadow: var(--shadow-medium);
        z-index: 999;
    }
    .nav.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    .nav-link {
        width: 100%;
        padding: 14px 16px;
        border-radius: 12px;
        text-align: center;
    }
    .nav-toggle { display: flex; }
    .nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(6px, 6px); }
    .nav-toggle.active span:nth-child(2) { opacity: 0; }
    .nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(6px, -6px); }
    .nav .lang-switch {
        display: flex;
        margin-left: 0;
        margin-top: 8px;
        width: 100%;
    }
    .nav .lang-switch .lang-btn { flex: 1; }
    .section { padding: 80px 0; }
    .hero { padding: 100px 0 60px; }
    .hero-content { display: flex; flex-direction: column-reverse; gap: 40px; }
    .hero-text { width: 100%; }
    .hero-visual { width: 100%; }
    .dashboard-card { max-width: 100%; padding: 24px; }
    .dashboard-grid { gap: 12px; }
    .dashboard-item { padding: 16px; }
    .dashboard-item-value { font-size: 24px; }
    .dashboard-title { font-size: 18px; }
    .side-badge { display: none; }
    .footer-inner { flex-direction: column; gap: 16px; text-align: center; }
}