/* ============================================ */
/* 空白格网络 v3.0 - 精致美化版                    */
/* ============================================ */

:root {
    --primary: #6366F1;
    --primary-light: #818CF8;
    --primary-dark: #4F46E5;
    --primary-50: rgba(99,102,241,0.05);
    --primary-100: rgba(99,102,241,0.1);
    --secondary: #06B6D4;
    --secondary-light: #22D3EE;
    --accent: #F59E0B;
    --rose: #F43F5E;
    --emerald: #10B981;
    --bg: #FFFFFF;
    --bg-light: #F8FAFC;
    --bg-warm: #FFFBF5;
    --bg-card: #FFFFFF;
    --surface: rgba(0,0,0,0.02);
    --border: rgba(0,0,0,0.06);
    --border-light: rgba(0,0,0,0.08);
    --text: #0F172A;
    --text-secondary: #475569;
    --text-muted: #94A3B8;
    --white: #FFFFFF;
    --shadow-xs: 0 1px 2px rgba(0,0,0,0.04);
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
    --shadow: 0 4px 16px rgba(0,0,0,0.08);
    --shadow-lg: 0 12px 40px rgba(0,0,0,0.1);
    --shadow-xl: 0 20px 60px rgba(0,0,0,0.12);
    --shadow-glow: 0 8px 32px rgba(99,102,241,0.15);
    --shadow-glow-lg: 0 16px 48px rgba(99,102,241,0.2);
    --radius: 12px;
    --radius-md: 16px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --radius-full: 9999px;
    --transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --font-sans: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

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

html { scroll-behavior: smooth; font-size: 16px; scroll-padding-top: 80px; }

body {
    font-family: var(--font-sans);
    color: var(--text);
    background: var(--bg);
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ============================================ */
/* 粒子画布                                     */
/* ============================================ */
#particleCanvas {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    z-index: 0;
    pointer-events: none;
}

/* ============================================ */
/* 鼠标跟随光效                                  */
/* ============================================ */
.cursor-glow {
    position: fixed;
    width: 500px; height: 500px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(99,102,241,0.04), transparent 70%);
    pointer-events: none;
    z-index: 1;
    transform: translate(-50%, -50%);
    transition: transform 0.15s ease;
    will-change: transform;
}

/* ============================================ */
/* 按钮                                         */
/* ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 32px;
    border-radius: var(--radius-md);
    font-size: 0.938rem;
    font-weight: 600;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    letter-spacing: 0.01em;
}

.btn--primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: var(--white);
    box-shadow: 0 4px 16px rgba(99,102,241,0.3), inset 0 1px 0 rgba(255,255,255,0.15);
}
.btn--primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(99,102,241,0.4), inset 0 1px 0 rgba(255,255,255,0.15);
}
.btn--primary:active { transform: translateY(0); }

.btn--glow {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: var(--white);
    box-shadow: 0 4px 16px rgba(99,102,241,0.3);
}
.btn--glow:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(99,102,241,0.4);
}

.btn--glass {
    background: rgba(0,0,0,0.03);
    color: var(--text);
    border: 1px solid var(--border-light);
    backdrop-filter: blur(8px);
}
.btn--glass:hover {
    background: rgba(0,0,0,0.06);
    border-color: rgba(0,0,0,0.12);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.btn--white {
    background: var(--white);
    color: var(--primary-dark);
    box-shadow: 0 4px 16px rgba(0,0,0,0.12);
}
.btn--white:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(0,0,0,0.16);
}

.btn--glass-white {
    background: rgba(255,255,255,0.15);
    color: var(--white);
    border: 1px solid rgba(255,255,255,0.2);
    backdrop-filter: blur(10px);
}
.btn--glass-white:hover {
    background: rgba(255,255,255,0.25);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.15);
}

.btn--outline {
    background: transparent;
    color: var(--text);
    border: 1px solid var(--border-light);
}
.btn--outline:hover {
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(99,102,241,0.1);
}

.btn--large { padding: 16px 36px; font-size: 1rem; border-radius: var(--radius-md); }
.btn--full { width: 100%; justify-content: center; }

/* ============================================ */
/* 导航栏                                       */
/* ============================================ */
.navbar {
    position: fixed; top: 0; left: 0; right: 0;
    z-index: 1000;
    background: rgba(255,255,255,0.8);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid rgba(0,0,0,0.04);
    transition: var(--transition);
}
.navbar.scrolled {
    background: rgba(255,255,255,0.95);
    box-shadow: 0 1px 0 rgba(0,0,0,0.05), 0 4px 20px rgba(0,0,0,0.04);
}
.navbar__inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.navbar__logo {
    display: flex; align-items: center; gap: 12px;
    font-size: 1.25rem; font-weight: 800; color: var(--text);
    letter-spacing: -0.02em;
}
.navbar__logo-icon {
    width: 38px; height: 38px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 11px;
    display: flex; align-items: center; justify-content: center;
    color: var(--white);
    box-shadow: 0 2px 8px rgba(99,102,241,0.3);
}
.navbar__menu { display: flex; align-items: center; gap: 4px; }
.navbar__link {
    padding: 8px 16px;
    font-size: 0.875rem; font-weight: 500;
    color: var(--text-secondary);
    border-radius: var(--radius);
    transition: var(--transition-fast);
}
.navbar__link:hover, .navbar__link.active {
    color: var(--primary);
    background: var(--primary-50);
}
.navbar__cta { font-size: 0.85rem; padding: 10px 22px; border-radius: var(--radius-full); }
.navbar__hamburger {
    display: none;
    flex-direction: column; gap: 5px;
    padding: 8px; z-index: 1001;
}
.navbar__hamburger span {
    width: 22px; height: 2px;
    background: var(--text);
    border-radius: 2px;
    transition: var(--transition-fast);
}
.navbar__hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.navbar__hamburger.active span:nth-child(2) { opacity: 0; }
.navbar__hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

@media (max-width: 768px) {
    .navbar__menu {
        position: fixed; top: 0; right: -100%;
        width: 300px; height: 100vh;
        flex-direction: column; justify-content: center; gap: 12px;
        background: rgba(255,255,255,0.98);
        backdrop-filter: blur(30px);
        box-shadow: -10px 0 40px rgba(0,0,0,0.08);
        transition: right 0.4s cubic-bezier(0.4,0,0.2,1);
    }
    .navbar__menu.open { right: 0; }
    .navbar__hamburger { display: flex; }
    .navbar__cta { display: none; }
}

/* ============================================ */
/* 文字渐变                                     */
/* ============================================ */
.gradient-text {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.gradient-text-light {
    background: linear-gradient(135deg, var(--white), rgba(255,255,255,0.85));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ============================================ */
/* Hero                                         */
/* ============================================ */
.hero {
    min-height: 100vh;
    display: flex; align-items: center;
    position: relative;
    overflow: hidden;
    padding-top: 72px;
    background: linear-gradient(180deg, var(--bg-light) 0%, var(--bg) 50%, var(--bg-light) 100%);
}
.hero::before {
    content: '';
    position: absolute; inset: 0;
    background:
        radial-gradient(ellipse 80% 60% at 20% 40%, rgba(99,102,241,0.04), transparent),
        radial-gradient(ellipse 60% 50% at 80% 60%, rgba(6,182,212,0.03), transparent);
    pointer-events: none;
}
.hero__bg-grid {
    position: absolute; inset: 0;
    background-image:
        linear-gradient(rgba(99,102,241,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(99,102,241,0.03) 1px, transparent 1px);
    background-size: 80px 80px;
    mask-image: radial-gradient(ellipse at center, black 20%, transparent 60%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 20%, transparent 60%);
}
.hero__inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
    position: relative;
    z-index: 2;
}
.hero__badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 8px 20px;
    border-radius: var(--radius-full);
    background: var(--primary-50);
    border: 1px solid rgba(99,102,241,0.15);
    color: var(--primary);
    font-size: 0.813rem;
    font-weight: 600;
    margin-bottom: 28px;
    letter-spacing: 0.02em;
}
.hero__badge-dot {
    width: 7px; height: 7px;
    border-radius: 50%;
    background: var(--emerald);
    box-shadow: 0 0 0 3px rgba(16,185,129,0.2);
    animation: pulse 2s infinite;
}
@keyframes pulse {
    0%, 100% { box-shadow: 0 0 0 3px rgba(16,185,129,0.2); }
    50% { box-shadow: 0 0 0 6px rgba(16,185,129,0.1); }
}
.hero__title {
    font-size: clamp(2.5rem, 5vw, 3.75rem);
    font-weight: 900;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: 24px;
    color: var(--text);
}
.hero__desc {
    font-size: 1.063rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 28px;
    max-width: 520px;
}
.hero__features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px 24px;
    margin-bottom: 36px;
    max-width: 420px;
}
.hero__feature-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
}
.hero__feature-check {
    width: 22px; height: 22px;
    border-radius: 7px;
    background: rgba(16,185,129,0.1);
    color: var(--emerald);
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
}
.hero__actions { display: flex; gap: 14px; margin-bottom: 48px; flex-wrap: wrap; }

.hero__stats {
    display: flex; align-items: center; gap: 16px;
}
.hero__stat-card {
    display: flex; align-items: center; gap: 12px;
    padding: 14px 20px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-xs);
}
.hero__stat-icon {
    width: 36px; height: 36px;
    border-radius: 10px;
    background: var(--primary-50);
    color: var(--primary);
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
}
.hero__stat-num {
    font-size: 1.25rem; font-weight: 800; color: var(--text);
    line-height: 1.2;
    letter-spacing: -0.02em;
}
.hero__stat-label {
    font-size: 0.75rem; color: var(--text-muted);
    letter-spacing: 0.01em;
}

/* Hero Visual */
.hero__visual {
    position: relative;
    display: flex; align-items: center; justify-content: center;
    height: 520px;
}
.hero__orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    animation: orbFloat 10s ease-in-out infinite;
}
.hero__orb--1 {
    width: 350px; height: 350px;
    background: rgba(99,102,241,0.1);
    top: 5%; left: 5%;
}
.hero__orb--2 {
    width: 300px; height: 300px;
    background: rgba(6,182,212,0.08);
    bottom: 5%; right: 5%;
    animation-delay: -4s;
}
@keyframes orbFloat {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(15px, -10px) scale(1.03); }
    66% { transform: translate(-10px, 10px) scale(0.97); }
}

.hero__visual-main {
    position: relative;
    z-index: 2;
}

/* Glass Card - Chat Interface */
.hero__glass-card {
    width: 380px;
    background: rgba(255,255,255,0.9);
    border: 1px solid rgba(0,0,0,0.05);
    border-radius: var(--radius-xl);
    backdrop-filter: blur(24px) saturate(150%);
    box-shadow:
        0 1px 0 rgba(255,255,255,0.8) inset,
        0 20px 50px rgba(0,0,0,0.06),
        0 1px 3px rgba(0,0,0,0.04);
    overflow: hidden;
    animation: cardFloat 7s ease-in-out infinite;
}
@keyframes cardFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}
.hero__glass-header {
    padding: 16px 20px;
    border-bottom: 1px solid rgba(0,0,0,0.04);
    display: flex; align-items: center; gap: 12px;
}
.hero__glass-dots {
    display: flex; gap: 7px;
}
.hero__glass-dots span {
    width: 11px; height: 11px;
    border-radius: 50%;
}
.hero__glass-dots span:nth-child(1) { background: #FF5F57; }
.hero__glass-dots span:nth-child(2) { background: #FEBC2E; }
.hero__glass-dots span:nth-child(3) { background: #28C840; }
.hero__glass-title {
    font-size: 0.813rem; font-weight: 600;
    color: var(--text-muted);
    letter-spacing: 0.01em;
}
.hero__glass-body {
    padding: 20px;
    display: flex; flex-direction: column; gap: 12px;
    min-height: 200px;
}
.hero__glass-msg {
    display: flex; align-items: flex-start; gap: 10px;
    animation: msgFadeIn 0.5s ease both;
}
.hero__glass-msg--user { flex-direction: row-reverse; }
.hero__glass-msg--ai { animation-delay: 0.8s; }
@keyframes msgFadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}
.hero__glass-avatar {
    width: 30px; height: 30px;
    border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    font-size: 0.7rem; font-weight: 700;
    flex-shrink: 0;
}
.hero__glass-avatar--user {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: var(--white);
    box-shadow: 0 2px 6px rgba(99,102,241,0.3);
}
.hero__glass-avatar--ai {
    background: linear-gradient(135deg, var(--secondary), #0891B2);
    color: var(--white);
    box-shadow: 0 2px 6px rgba(6,182,212,0.3);
}
.hero__glass-bubble {
    padding: 12px 16px;
    border-radius: 16px;
    font-size: 0.85rem;
    line-height: 1.5;
    max-width: 260px;
}
.hero__glass-msg--user .hero__glass-bubble {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: var(--white);
    border-bottom-right-radius: 6px;
    box-shadow: 0 2px 8px rgba(99,102,241,0.2);
}
.hero__glass-bubble--ai {
    background: var(--bg-light);
    color: var(--text);
    border: 1px solid var(--border);
    border-bottom-left-radius: 6px;
}
.hero__glass-input {
    padding: 14px 20px;
    border-top: 1px solid rgba(0,0,0,0.04);
    display: flex; align-items: center;
    background: rgba(0,0,0,0.01);
}
.hero__glass-cursor {
    color: var(--primary);
    font-weight: 300;
    font-size: 1.1rem;
    animation: blink 1s step-end infinite;
}
@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

/* Rings */
.hero__glass-ring {
    position: absolute;
    border-radius: 50%;
    border: 1px solid rgba(99,102,241,0.08);
    animation: ringPulse 5s ease-in-out infinite;
}
.hero__glass-ring--1 {
    width: 440px; height: 440px;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
}
.hero__glass-ring--2 {
    width: 540px; height: 540px;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: -2.5s;
}
@keyframes ringPulse {
    0%, 100% { opacity: 0.4; transform: translate(-50%, -50%) scale(1); }
    50% { opacity: 0.7; transform: translate(-50%, -50%) scale(1.02); }
}

/* Floating Tags */
.hero__float {
    position: absolute;
    display: flex; align-items: center; gap: 10px;
    padding: 12px 18px;
    background: rgba(255,255,255,0.95);
    border: 1px solid rgba(0,0,0,0.05);
    border-radius: var(--radius-md);
    backdrop-filter: blur(16px);
    font-size: 0.813rem; font-weight: 600;
    color: var(--text);
    box-shadow: 0 4px 16px rgba(0,0,0,0.05), 0 1px 0 rgba(255,255,255,0.8) inset;
    z-index: 3;
    animation: floatCard 6s ease-in-out infinite;
}
.hero__float-icon {
    width: 30px; height: 30px;
    border-radius: 9px;
    display: flex; align-items: center; justify-content: center;
}
.hero__float-icon--blue { background: var(--primary-100); color: var(--primary); }
.hero__float-icon--cyan { background: rgba(6,182,212,0.1); color: var(--secondary); }
.hero__float-icon--amber { background: rgba(245,158,11,0.1); color: var(--accent); }
.hero__float--1 { top: 8%; right: -10px; animation-delay: 0s; }
.hero__float--2 { bottom: 25%; left: -20px; animation-delay: -2s; }
.hero__float--3 { bottom: 5%; right: 10%; animation-delay: -4s; }
@keyframes floatCard {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

.hero__scroll-hint {
    position: absolute;
    bottom: 36px; left: 50%;
    transform: translateX(-50%);
    display: flex; flex-direction: column;
    align-items: center; gap: 10px;
    color: var(--text-muted);
    font-size: 0.75rem;
    animation: fadeInUp 1s ease 1.5s both;
}
.hero__scroll-mouse {
    width: 22px; height: 34px;
    border: 2px solid var(--border);
    border-radius: 11px;
    position: relative;
}
.hero__scroll-wheel {
    width: 3px; height: 6px;
    background: var(--primary);
    border-radius: 2px;
    position: absolute;
    top: 6px; left: 50%;
    transform: translateX(-50%);
    animation: scrollWheel 2s ease-in-out infinite;
}
@keyframes scrollWheel {
    0%, 100% { opacity: 1; transform: translateX(-50%) translateY(0); }
    50% { opacity: 0.3; transform: translateX(-50%) translateY(8px); }
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateX(-50%) translateY(20px); }
    to { opacity: 1; transform: translateX(-50%) translateY(0); }
}

@media (max-width: 968px) {
    .hero__inner { grid-template-columns: 1fr; text-align: center; gap: 40px; }
    .hero__desc { margin: 0 auto 28px; }
    .hero__features { justify-content: center; max-width: 100%; }
    .hero__actions { justify-content: center; }
    .hero__stats { justify-content: center; flex-wrap: wrap; }
    .hero__visual { height: 380px; }
    .hero__glass-card { width: 320px; }
    .hero__glass-ring--1 { width: 380px; height: 380px; }
    .hero__glass-ring--2 { width: 460px; height: 460px; }
    .hero__scroll-hint { display: none; }
}
@media (max-width: 480px) {
    .hero__features { grid-template-columns: 1fr; }
    .hero__stat-card { padding: 12px 16px; }
    .hero__stat-num { font-size: 1.1rem; }
}

/* ============================================ */
/* 信任标识                                     */
/* ============================================ */
.trust {
    padding: 56px 0;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    position: relative;
    z-index: 2;
    background: var(--bg);
}
.trust__label {
    text-align: center;
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: 28px;
    text-transform: uppercase;
    letter-spacing: 2.5px;
    font-weight: 600;
}
.trust__logos {
    display: flex; align-items: center; justify-content: center;
    gap: 40px; flex-wrap: wrap;
}
.trust__logo-item {
    display: flex; align-items: center; gap: 10px;
    color: var(--text-muted);
    font-size: 0.875rem; font-weight: 600;
    transition: var(--transition);
    opacity: 0.6;
}
.trust__logo-item:hover { opacity: 1; color: var(--primary); }

/* ============================================ */
/* 通用 Section                                  */
/* ============================================ */
.section {
    padding: 110px 0;
    position: relative;
    z-index: 2;
    background: var(--bg);
}
.section--alt {
    background: var(--bg-light);
}
.section--alt::before {
    content: '';
    position: absolute; inset: 0;
    background: radial-gradient(ellipse 60% 40% at 50% 0%, rgba(99,102,241,0.025), transparent);
    pointer-events: none;
}
.section__header {
    text-align: center;
    margin-bottom: 64px;
}
.section__tag {
    display: inline-flex;
    align-items: center; gap: 8px;
    padding: 7px 16px;
    border-radius: var(--radius-full);
    background: var(--primary-50);
    border: 1px solid rgba(99,102,241,0.12);
    color: var(--primary);
    font-size: 0.813rem;
    font-weight: 600;
    margin-bottom: 20px;
    letter-spacing: 0.02em;
}
.section__title {
    font-size: clamp(1.875rem, 4vw, 2.5rem);
    font-weight: 800;
    color: var(--text);
    line-height: 1.2;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}
.section__desc {
    font-size: 1rem;
    color: var(--text-secondary);
    max-width: 560px;
    margin: 0 auto;
    line-height: 1.8;
}

/* ============================================ */
/* Features                                     */
/* ============================================ */
.features__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}
.feature-card {
    padding: 36px 28px;
    border-radius: var(--radius-lg);
    background: var(--bg-card);
    border: 1px solid var(--border);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}
.feature-card::before {
    content: '';
    position: absolute; top: 0; left: 0; right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}
.feature-card:hover {
    transform: translateY(-4px);
    border-color: rgba(99,102,241,0.15);
    box-shadow: 0 12px 32px rgba(0,0,0,0.06), 0 0 0 1px rgba(99,102,241,0.08);
}
.feature-card:hover::before { transform: scaleX(1); }
.feature-card__icon-wrap {
    width: 52px; height: 52px;
    border-radius: 14px;
    display: flex; align-items: center; justify-content: center;
    margin-bottom: 20px;
    transition: var(--transition);
}
.feature-card:hover .feature-card__icon-wrap { transform: scale(1.05); }
.feature-card__icon-wrap--blue { background: var(--primary-100); color: var(--primary); }
.feature-card__icon-wrap--cyan { background: rgba(6,182,212,0.1); color: var(--secondary); }
.feature-card__icon-wrap--amber { background: rgba(245,158,11,0.1); color: var(--accent); }
.feature-card__icon-wrap--green { background: rgba(16,185,129,0.1); color: var(--emerald); }
.feature-card__icon-wrap--rose { background: rgba(244,63,94,0.1); color: var(--rose); }
.feature-card__icon-wrap--indigo { background: var(--primary-100); color: var(--primary); }
.feature-card__title {
    font-size: 1.1rem; font-weight: 700;
    color: var(--text);
    margin-bottom: 10px;
    letter-spacing: -0.01em;
}
.feature-card__desc {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

@media (max-width: 968px) { .features__grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .features__grid { grid-template-columns: 1fr; } }

/* ============================================ */
/* About                                        */
/* ============================================ */
.about__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 72px;
    align-items: center;
}
.about__visual {
    position: relative;
    height: 520px;
}
.about__visual-bg {
    position: absolute; inset: 0;
    background: linear-gradient(135deg, rgba(99,102,241,0.04), rgba(6,182,212,0.03));
    border-radius: var(--radius-xl);
    border: 1px solid var(--border);
}
.about__main-card {
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    width: 340px;
    background: rgba(255,255,255,0.95);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow-lg);
    padding: 24px;
    z-index: 2;
}
.about__main-header {
    display: flex; align-items: center; gap: 14px;
    margin-bottom: 16px;
}
.about__main-logo {
    width: 44px; height: 44px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    color: var(--white);
    flex-shrink: 0;
}
.about__main-name {
    font-size: 0.938rem; font-weight: 700;
    color: var(--text);
    line-height: 1.3;
}
.about__main-sub {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 2px;
}
.about__main-divider {
    height: 1px;
    background: var(--border);
    margin: 16px 0;
}
.about__main-info {
    display: flex; flex-direction: column; gap: 10px;
}
.about__main-row {
    display: flex; align-items: center; gap: 10px;
    font-size: 0.813rem;
    color: var(--text-secondary);
}
.about__main-row svg { color: var(--text-muted); flex-shrink: 0; }
.about__main-tags {
    display: flex; flex-wrap: wrap; gap: 6px;
}
.about__main-tag {
    padding: 4px 10px;
    border-radius: var(--radius-full);
    font-size: 0.688rem;
    font-weight: 600;
    letter-spacing: 0.01em;
}
.about__main-tag--blue { background: var(--primary-100); color: var(--primary); }
.about__main-tag--cyan { background: rgba(6,182,212,0.1); color: var(--secondary); }
.about__main-tag--amber { background: rgba(245,158,11,0.1); color: var(--accent); }
.about__main-tag--green { background: rgba(16,185,129,0.1); color: var(--emerald); }

.about__stat-card {
    position: absolute;
    display: flex; align-items: center; gap: 10px;
    padding: 12px 16px;
    background: rgba(255,255,255,0.95);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    backdrop-filter: blur(16px);
    box-shadow: var(--shadow);
    z-index: 3;
    animation: floatCard 6s ease-in-out infinite;
}
.about__stat-icon {
    width: 32px; height: 32px;
    border-radius: 9px;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
}
.about__stat-icon--blue { background: var(--primary-100); color: var(--primary); }
.about__stat-icon--cyan { background: rgba(6,182,212,0.1); color: var(--secondary); }
.about__stat-icon--amber { background: rgba(245,158,11,0.1); color: var(--accent); }
.about__stat-icon--green { background: rgba(16,185,129,0.1); color: var(--emerald); }
.about__stat-icon--rose { background: rgba(244,63,94,0.1); color: var(--rose); }
.about__stat-icon--indigo { background: var(--primary-100); color: var(--primary); }
.about__stat-content { display: flex; flex-direction: column; }
.about__stat-title {
    font-size: 0.75rem; font-weight: 700;
    color: var(--text);
    line-height: 1.3;
}
.about__stat-desc {
    font-size: 0.625rem;
    color: var(--text-muted);
    line-height: 1.4;
}
.about__stat-card--1 { top: 8%; left: 5%; animation-delay: 0s; }
.about__stat-card--2 { top: 15%; right: 5%; animation-delay: -1s; }
.about__stat-card--3 { top: 35%; left: 2%; animation-delay: -2s; }
.about__stat-card--4 { top: 40%; right: 2%; animation-delay: -3s; }
.about__stat-card--5 { bottom: 35%; left: 5%; animation-delay: -4s; }
.about__stat-card--6 { bottom: 28%; right: 5%; animation-delay: -5s; }
.about__stat-card--7 { bottom: 12%; left: 8%; animation-delay: -6s; }
.about__stat-card--8 { bottom: 8%; right: 8%; animation-delay: -7s; }

.about__title {
    font-size: 2rem;
    font-weight: 800;
    color: var(--text);
    line-height: 1.25;
    margin-bottom: 20px;
    letter-spacing: -0.02em;
}
.about__desc {
    font-size: 0.938rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 12px;
}
.about__list { margin: 24px 0 32px; }
.about__list li {
    display: flex; align-items: center; gap: 12px;
    padding: 8px 0;
    font-size: 0.938rem;
    color: var(--text);
}
.about__list li svg { color: var(--emerald); flex-shrink: 0; }

@media (max-width: 768px) {
    .about__grid { grid-template-columns: 1fr; gap: 40px; }
    .about__visual { height: 420px; }
    .about__main-card { width: 240px; padding: 14px; }
    .about__main-name { font-size: 0.75rem; }
    .about__main-row { font-size: 0.65rem; gap: 6px; }
    .about__main-row svg { width: 12px; height: 12px; }
    .about__main-tag { font-size: 0.563rem; padding: 2px 6px; }
    .about__main-divider { margin: 10px 0; }
    .about__stat-card { padding: 6px 10px; gap: 6px; }
    .about__stat-icon { width: 24px; height: 24px; border-radius: 7px; }
    .about__stat-icon svg { width: 12px; height: 12px; }
    .about__stat-title { font-size: 0.625rem; }
    .about__stat-desc { font-size: 0.5rem; }
}

/* ============================================ */
/* Stats                                        */
/* ============================================ */
.stats {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--primary-dark), #312E81);
    position: relative;
    overflow: hidden;
    z-index: 2;
}
.stats__bg-pattern {
    position: absolute; inset: 0;
    background-image:
        radial-gradient(circle at 20% 50%, rgba(255,255,255,0.06) 0%, transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(6,182,212,0.08) 0%, transparent 50%);
}
.stats__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    position: relative; z-index: 1;
}
.stat-card {
    text-align: center;
    padding: 36px 20px;
    border-radius: var(--radius-lg);
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.08);
    backdrop-filter: blur(8px);
    transition: var(--transition);
}
.stat-card:hover {
    transform: translateY(-4px);
    background: rgba(255,255,255,0.1);
}
.stat-card__number {
    font-size: 2.25rem; font-weight: 900;
    color: var(--white);
    line-height: 1;
    margin-bottom: 8px;
    letter-spacing: -0.02em;
}
.stat-card__label {
    font-size: 0.813rem;
    color: rgba(255,255,255,0.65);
}
.stat-card__icon {
    margin-top: 14px;
    color: rgba(255,255,255,0.5);
}

@media (max-width: 768px) {
    .stats__grid { grid-template-columns: repeat(2, 1fr); }
    .stat-card__number { font-size: 1.875rem; }
}

/* ============================================ */
/* Cases                                        */
/* ============================================ */
.cases__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.case-card {
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--bg-card);
    border: 1px solid var(--border);
    transition: var(--transition);
}
.case-card:hover {
    transform: translateY(-6px);
    border-color: rgba(99,102,241,0.15);
    box-shadow: 0 16px 40px rgba(0,0,0,0.08);
}
.case-card__image {
    width: 100%; aspect-ratio: 16/10;
    display: flex; align-items: center; justify-content: center;
    position: relative;
}
.case-card__image--1 { background: linear-gradient(135deg, #6366F1, #4F46E5); }
.case-card__image--2 { background: linear-gradient(135deg, #06B6D4, #0891B2); }
.case-card__image--3 { background: linear-gradient(135deg, #F59E0B, #D97706); }
.case-card__overlay {
    position: absolute; bottom: 0; left: 0; right: 0;
    padding: 16px 20px;
    background: linear-gradient(transparent, rgba(0,0,0,0.35));
}
.case-card__tag {
    display: inline-block;
    padding: 4px 12px;
    border-radius: var(--radius-full);
    background: rgba(255,255,255,0.18);
    color: var(--white);
    font-size: 0.75rem;
    font-weight: 600;
    backdrop-filter: blur(8px);
    letter-spacing: 0.02em;
}
.case-card__body { padding: 24px; }
.case-card__title {
    font-size: 1.063rem; font-weight: 700;
    color: var(--text);
    margin-bottom: 8px;
    letter-spacing: -0.01em;
}
.case-card__desc {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 16px;
}
.case-card__link {
    display: inline-flex; align-items: center; gap: 6px;
    font-size: 0.85rem; font-weight: 600;
    color: var(--primary);
}
.case-card__link:hover { gap: 10px; }

@media (max-width: 968px) { .cases__grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .cases__grid { grid-template-columns: 1fr; } }

/* ============================================ */
/* Pricing                                      */
/* ============================================ */
.pricing__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    align-items: start;
}
.price-card {
    padding: 36px 28px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    background: var(--bg-card);
    transition: var(--transition);
    text-align: center;
    position: relative;
}
.price-card:hover {
    transform: translateY(-6px);
    border-color: rgba(99,102,241,0.15);
    box-shadow: 0 16px 40px rgba(0,0,0,0.06);
}
.price-card--featured {
    border: 2px solid var(--primary);
    background: linear-gradient(180deg, rgba(99,102,241,0.03), var(--bg-card));
    transform: scale(1.03);
}
.price-card--featured:hover { transform: scale(1.03) translateY(-6px); }
.price-card__badge {
    position: absolute; top: -12px; left: 50%;
    transform: translateX(-50%);
    padding: 5px 20px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: var(--white);
    font-size: 0.75rem; font-weight: 700;
    white-space: nowrap;
    letter-spacing: 0.03em;
}
.price-card__header { margin-bottom: 20px; }
.price-card__name {
    font-size: 1rem; font-weight: 700;
    color: var(--text-secondary);
    margin-bottom: 12px;
}
.price-card__price {
    font-size: 2.25rem; font-weight: 900;
    color: var(--text);
    line-height: 1;
    letter-spacing: -0.02em;
}
.price-card__currency {
    font-size: 1.125rem;
    color: var(--primary);
    vertical-align: super;
}
.price-card__period {
    font-size: 0.813rem;
    color: var(--text-muted);
    margin-top: 8px;
}
.price-card__divider {
    height: 1px;
    background: var(--border);
    margin: 20px 0;
}
.price-card__features { text-align: left; margin-bottom: 28px; }
.price-card__features li {
    display: flex; align-items: center; gap: 10px;
    padding: 8px 0;
    font-size: 0.875rem;
    color: var(--text);
}
.price-card__features li svg { color: var(--primary); flex-shrink: 0; }

@media (max-width: 968px) {
    .pricing__grid { grid-template-columns: 1fr; max-width: 400px; margin: 0 auto; }
    .price-card--featured { transform: none; }
    .price-card--featured:hover { transform: translateY(-6px); }
}

/* ============================================ */
/* FAQ                                          */
/* ============================================ */
.faq__list { max-width: 740px; margin: 0 auto; }
.faq__item {
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    margin-bottom: 12px;
    overflow: hidden;
    transition: var(--transition);
    background: var(--bg-card);
}
.faq__item:hover { border-color: rgba(99,102,241,0.15); }
.faq__question {
    display: flex; align-items: center; justify-content: space-between;
    width: 100%; padding: 20px 24px;
    font-size: 0.938rem; font-weight: 600;
    text-align: left; color: var(--text);
    transition: var(--transition-fast);
}
.faq__question:hover { color: var(--primary); }
.faq__icon {
    flex-shrink: 0;
    transition: transform 0.3s ease;
    color: var(--text-muted);
}
.faq__item.open .faq__icon { transform: rotate(45deg); color: var(--primary); }
.faq__answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.4s ease;
}
.faq__item.open .faq__answer { max-height: 300px; }
.faq__answer-inner {
    padding: 0 24px 20px;
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ============================================ */
/* CTA                                          */
/* ============================================ */
.cta {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--primary-dark), #1E1B4B);
    position: relative;
    overflow: hidden;
    z-index: 2;
}
.cta::before {
    content: '';
    position: absolute; inset: 0;
    background:
        radial-gradient(ellipse 50% 50% at 80% 20%, rgba(129,140,248,0.2), transparent),
        radial-gradient(ellipse 40% 40% at 20% 80%, rgba(6,182,212,0.15), transparent);
    pointer-events: none;
}
.cta__bg-orb { display: none; }
.cta__content {
    text-align: center;
    position: relative; z-index: 1;
    max-width: 640px;
    margin: 0 auto;
}
.cta__title {
    font-size: clamp(1.875rem, 4vw, 2.5rem);
    font-weight: 900;
    color: var(--white);
    margin-bottom: 16px;
    line-height: 1.2;
    letter-spacing: -0.02em;
}
.cta__desc {
    font-size: 1rem;
    color: rgba(255,255,255,0.65);
    margin-bottom: 36px;
    line-height: 1.8;
}
.cta__actions {
    display: flex; gap: 14px;
    justify-content: center;
    flex-wrap: wrap;
}

/* ============================================ */
/* Footer                                       */
/* ============================================ */
.footer {
    padding: 72px 0 0;
    background: var(--bg-light);
    color: var(--text-secondary);
    position: relative;
    z-index: 2;
    border-top: 1px solid var(--border);
}
.footer__grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid var(--border);
}
.footer__logo {
    font-size: 1.25rem; font-weight: 800;
    color: var(--text);
    display: flex; align-items: center; gap: 10px;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}
.footer__logo-icon {
    width: 34px; height: 34px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    color: var(--white);
    box-shadow: 0 2px 6px rgba(99,102,241,0.25);
}
.footer__brand-desc { font-size: 0.875rem; line-height: 1.8; margin-bottom: 20px; }
.footer__social { display: flex; gap: 10px; }
.footer__social-link {
    width: 38px; height: 38px;
    border-radius: 10px;
    background: var(--bg);
    border: 1px solid var(--border);
    display: flex; align-items: center; justify-content: center;
    color: var(--text-muted);
    transition: var(--transition-fast);
}
.footer__social-link:hover {
    background: var(--primary);
    border-color: var(--primary);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(99,102,241,0.3);
}
.footer__title {
    font-size: 0.813rem; font-weight: 700;
    color: var(--text);
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 1.5px;
}
.footer__links li { margin-bottom: 10px; }
.footer__links a { font-size: 0.875rem; transition: var(--transition-fast); }
.footer__links a:hover { color: var(--primary); padding-left: 4px; }
.footer__bottom {
    padding: 24px 0;
    text-align: center;
    font-size: 0.813rem;
}
.footer__bottom a { color: var(--text-muted); }
.footer__bottom a:hover { color: var(--primary); }

@media (max-width: 768px) {
    .footer__grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px) {
    .footer__grid { grid-template-columns: 1fr; }
}

/* ============================================ */
/* Chat Button                                   */
/* ============================================ */
.chat-btn {
    position: fixed;
    bottom: 28px; right: 28px;
    z-index: 999;
    width: 56px; height: 56px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    box-shadow: 0 4px 20px rgba(99,102,241,0.4);
    display: flex; align-items: center; justify-content: center;
    color: var(--white);
    transition: var(--transition);
    animation: chatBounce 3s ease-in-out infinite;
}
.chat-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 28px rgba(99,102,241,0.5);
}
@keyframes chatBounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}
.chat-tooltip {
    position: absolute; right: 68px; top: 50%;
    transform: translateY(-50%);
    padding: 8px 16px;
    background: var(--text);
    color: var(--white);
    border-radius: var(--radius);
    font-size: 0.813rem; font-weight: 500;
    white-space: nowrap;
    opacity: 0; pointer-events: none;
    transition: var(--transition-fast);
}
.chat-btn:hover .chat-tooltip { opacity: 1; }
.chat-tooltip::after {
    content: '';
    position: absolute; right: -5px; top: 50%;
    transform: translateY(-50%);
    border: 5px solid transparent;
    border-left-color: var(--text);
}

/* ============================================ */
/* Back to Top                                   */
/* ============================================ */
.back-top {
    position: fixed;
    bottom: 96px; right: 34px;
    z-index: 998;
    width: 44px; height: 44px;
    border-radius: 12px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    display: flex; align-items: center; justify-content: center;
    color: var(--text-muted);
    opacity: 0; pointer-events: none;
    transition: var(--transition);
}
.back-top.show { opacity: 1; pointer-events: auto; }
.back-top:hover {
    color: var(--primary);
    transform: translateY(-3px);
    box-shadow: var(--shadow);
}

/* ============================================ */
/* Reveal Animation                             */
/* ============================================ */
.reveal-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
    transition-delay: var(--delay, 0s);
}
.reveal-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================ */
/* Selection                                     */
/* ============================================ */
::selection {
    background: rgba(99,102,241,0.15);
    color: var(--text);
}

/* Scrollbar */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ============================================ */
/* Toast Notification                           */
/* ============================================ */
@keyframes toastIn {
    from { opacity: 0; transform: translateX(-50%) translateY(20px); }
    to { opacity: 1; transform: translateX(-50%) translateY(0); }
}
@keyframes toastOut {
    from { opacity: 1; transform: translateX(-50%) translateY(0); }
    to { opacity: 0; transform: translateX(-50%) translateY(20px); }
}