/* ═══════════════════════════════════════════════════
   DESIGN SYSTEM - 个人健康精英Pro+ V2
   ═══════════════════════════════════════════════════ */

:root {
    /* ── Colors ── */
    --c-primary: #2563EB;
    --c-primary-light: #60A5FA;
    --c-primary-dark: #1D4ED8;
    --c-primary-50: rgba(37,99,235,0.06);
    --c-primary-100: rgba(37,99,235,0.12);
    --c-danger: #DC2626;
    --c-danger-dark: #B91C1C;
    --c-success: #22C55E;
    --c-success-bg: rgba(34,197,94,0.1);
    --c-text: #0F172A;
    --c-text-secondary: #475569;
    --c-text-muted: #94A3B8;
    --c-bg: #FFFFFF;
    --c-bg-alt: #F8FAFC;
    --c-bg-hero: linear-gradient(180deg, #ffffff 0%, #f0f7ff 100%);
    --c-border: #E2E8F0;

    /* ── Typography ── */
    --font-sans: 'Inter', 'Noto Sans SC', system-ui, -apple-system, sans-serif;

    /* ── Spacing ── */
    --sp-xs: 4px;
    --sp-sm: 8px;
    --sp-md: 16px;
    --sp-lg: 24px;
    --sp-xl: 32px;
    --sp-2xl: 48px;
    --sp-3xl: 64px;
    --sp-4xl: 96px;

    /* ── Radius ── */
    --r-sm: 12px;
    --r-md: 16px;
    --r-lg: 20px;
    --r-xl: 24px;
    --r-2xl: 32px;
    --r-full: 9999px;

    /* ── Shadows ── */
    --sh-sm: 0 2px 8px rgba(15,23,42,0.04);
    --sh-md: 0 8px 24px rgba(15,23,42,0.06);
    --sh-lg: 0 16px 48px rgba(15,23,42,0.08);
    --sh-xl: 0 24px 64px rgba(15,23,42,0.12);
    --sh-card: 0 4px 16px rgba(15,23,42,0.04), 0 1px 4px rgba(15,23,42,0.04);
    --sh-card-hover: 0 20px 60px rgba(37,99,235,0.10), 0 4px 16px rgba(15,23,42,0.06);

    /* ── Transitions ── */
    --ease: cubic-bezier(0.4, 0, 0.2, 1);
    --tr-fast: 180ms var(--ease);
    --tr-normal: 300ms var(--ease);
    --tr-slow: 500ms var(--ease);
}

/* ═══ RESET ═══ */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.6;
    color: var(--c-text);
    background: var(--c-bg);
}

img{display:block;max-width:100%}
a{text-decoration:none;color:inherit}
ul,ol{list-style:none}
button{border:none;background:none;cursor:pointer;font:inherit}

/* ═══ LAYOUT ═══ */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--sp-lg);
}

/* ═══ TYPOGRAPHY ═══ */
.section-title {
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    font-weight: 800;
    color: var(--c-text);
    text-align: center;
    letter-spacing: -0.02em;
    margin-bottom: var(--sp-md);
    line-height: 1.2;
}

.section-subtitle {
    font-size: clamp(1rem, 2vw, 1.15rem);
    color: var(--c-text-secondary);
    text-align: center;
    max-width: 560px;
    margin: 0 auto var(--sp-3xl);
    line-height: 1.7;
}

/* ═══ BUTTONS ═══ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--sp-sm);
    font-weight: 600;
    border-radius: var(--r-full);
    transition: all var(--tr-normal);
    white-space: nowrap;
    cursor: pointer;
    border: none;
    text-decoration: none;
}

.btn-lg {
    padding: 14px 32px;
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--c-primary) 0%, var(--c-primary-dark) 100%);
    color: #fff;
    box-shadow: 0 4px 16px rgba(37,99,235,0.3);
}
.btn-primary:hover {
    transform: translateY(-2px) scale(1.03);
    box-shadow: 0 8px 32px rgba(37,99,235,0.4);
}

.btn-danger {
    background: var(--c-danger);
    color: #fff;
    padding: 12px 24px;
    box-shadow: 0 4px 12px rgba(220, 38, 38, 0.25);
}
.btn-danger:hover {
    background: var(--c-danger-dark);
    box-shadow: 0 6px 16px rgba(220, 38, 38, 0.35);
    transform: translateY(-1px);
}
.btn-danger:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(220, 38, 38, 0.2);
}
.btn-danger i {
    color: #fff;
}

.btn-ghost {
    background: transparent;
    color: var(--c-primary);
    border: 2px solid var(--c-primary);
}
.btn-ghost:hover {
    background: var(--c-primary);
    color: #fff;
    transform: translateY(-2px);
}

/* ═══ ICONS ═══ */
.icon-xs{width:14px;height:14px}
.icon-sm{width:18px;height:18px}
.icon-md{width:22px;height:22px}
.icon-lg{width:28px;height:28px}

/* ═══ SCROLL REVEAL ═══ */
[data-reveal] {
    opacity: 0;
    transform: translateY(32px);
    transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
[data-reveal].revealed {
    opacity: 1;
    transform: translateY(0);
}

/* ═══════════════════════════════════════════════════
   NAVIGATION
   ═══════════════════════════════════════════════════ */
nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255,255,255,0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(226,232,240,0.6);
    transition: all var(--tr-normal);
}
nav.scrolled {
    box-shadow: var(--sh-md);
}

.nav-inner {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--sp-lg);
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--sp-sm);
}
.logo img {
    height: 36px;
    width: auto;
}
.logo-text {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--c-primary);
}

nav ul {
    display: flex;
    align-items: center;
    gap: var(--sp-sm);
}
nav ul li a {
    padding: 8px 18px;
    border-radius: var(--r-full);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--c-text-secondary);
    transition: all var(--tr-fast);
}
nav ul li a:hover,
nav ul li a.nav-active {
    color: var(--c-primary);
    background: var(--c-primary-50);
}

.nav-btn-primary {
    background: linear-gradient(135deg, var(--c-primary), var(--c-primary-dark)) !important;
    color: #fff !important;
    box-shadow: 0 2px 8px rgba(37,99,235,0.25);
}
.nav-btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(37,99,235,0.35) !important;
}

.nav-btn-outline {
    border: 1.5px solid var(--c-border) !important;
    color: var(--c-text-secondary) !important;
}
.nav-btn-outline:hover {
    border-color: var(--c-primary) !important;
    color: var(--c-primary) !important;
    background: var(--c-primary-50) !important;
}

/* Mobile menu */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
}
.mobile-menu-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--c-text);
    border-radius: 2px;
    transition: all var(--tr-fast);
}
.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}
.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
}
.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ═══════════════════════════════════════════════════
   HERO
   ═══════════════════════════════════════════════════ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: var(--c-bg-hero);
    overflow: visible;
    padding: 120px 0 80px;
}

/* Background decoration */
.hero-bg {
    position: absolute;
    inset: 0;
    pointer-events: none;
    overflow: hidden;
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(37,99,235,0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(37,99,235,0.04) 1px, transparent 1px);
    background-size: 64px 64px;
    mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, black 20%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, black 20%, transparent 70%);
}

.hero-glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
}
.glow-1 {
    width: 500px; height: 500px;
    top: -10%; left: 10%;
    background: rgba(37,99,235,0.08);
}
.glow-2 {
    width: 400px; height: 400px;
    bottom: -5%; right: 5%;
    background: rgba(96,165,250,0.1);
}
.glow-3 {
    width: 300px; height: 300px;
    top: 30%; right: 25%;
    background: rgba(34,197,94,0.06);
}

/* Hero grid layout */
.hero-grid-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-3xl);
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-content {
    animation: fadeSlideUp 0.8s var(--ease) both;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--sp-sm);
    padding: 8px 20px;
    border-radius: var(--r-full);
    background: var(--c-primary-50);
    border: 1px solid rgba(37,99,235,0.15);
    color: var(--c-primary);
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: var(--sp-xl);
}

.hero-label {
    display: block;
    font-size: clamp(0.85rem, 1.5vw, 0.95rem);
    font-weight: 600;
    color: var(--c-primary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: var(--sp-sm);
}

.hero-headline {
    display: block;
    font-size: clamp(2rem, 5vw, 3.2rem);
    font-weight: 900;
    line-height: 1.15;
    letter-spacing: -0.03em;
    color: var(--c-text);
}

.hero-desc {
    margin-top: var(--sp-lg);
    font-size: 1.1rem;
    color: var(--c-text-secondary);
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    gap: var(--sp-md);
    margin-top: var(--sp-2xl);
    flex-wrap: wrap;
}

/* Hero mini stats */
.hero-stats {
    display: flex;
    gap: var(--sp-xl);
    margin-top: var(--sp-3xl);
    padding-top: var(--sp-xl);
    border-top: 1px solid var(--c-border);
}

.hero-stat {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.hero-stat-num {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--c-text);
    line-height: 1;
}
.hero-stat-num strong {
    color: var(--c-primary);
}

.hero-stat-label {
    font-size: 0.8rem;
    color: var(--c-text-muted);
    font-weight: 500;
}

/* Hero visual */
.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    animation: fadeSlideUp 0.8s var(--ease) 0.2s both;
}

.phone-float {
    position: relative;
    width: 100%;
    max-width: 310px;
    margin: 0 auto;
}

.phone-frame {
    position: relative;
    border-radius: 32px;
    overflow: hidden;
    box-shadow: var(--sh-xl);
    background: #fff;
    border: 4px solid #1a1a2e;
    animation: phoneFloat 4s ease-in-out infinite;
}

.phone-mockup {
    width: 100%;
    height: auto;
    display: block;
}

/* Floating cards */
.float-card {
    position: absolute;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(12px);
    border-radius: var(--r-md);
    box-shadow: var(--sh-lg);
    border: 1px solid rgba(226,232,240,0.8);
    white-space: nowrap;
    animation: cardFloat 3.5s ease-in-out infinite;
    z-index: 5;
}
.float-card .icon-md {
    flex-shrink: 0;
}
.fc-label {
    display: block;
    font-size: 0.72rem;
    color: var(--c-text-muted);
    font-weight: 500;
}
.fc-value {
    display: block;
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--c-text);
    line-height: 1.2;
}

.fc-heart { top: 6%; left: -62%; animation-delay: 0s; }
.fc-heart .icon-md { color: #EF4444; }

.fc-sleep { top: 24%; right: -58%; animation-delay: 0.6s; }
.fc-sleep .icon-md { color: #8B5CF6; }

.fc-ai { bottom: 30%; left: -64%; animation-delay: 1.2s; }
.fc-ai .icon-md { color: var(--c-primary); }

.fc-trend { bottom: 8%; right: -54%; animation-delay: 1.8s; }
.fc-trend .icon-md { color: var(--c-success); }

/* ═══════════════════════════════════════════════════
   BRAND TRUST
   ═══════════════════════════════════════════════════ */
.brand-trust {
    padding: var(--sp-4xl) 0;
    background: var(--c-bg);
}

.media-card {
    max-width: 800px;
    margin: 0 auto;
}

.media-card-inner {
    display: flex;
    align-items: center;
    gap: var(--sp-xl);
    padding: var(--sp-xl) var(--sp-2xl);
    background: var(--c-bg);
    border-radius: var(--r-xl);
    box-shadow: var(--sh-card);
    border: 1px solid var(--c-border);
    transition: all var(--tr-normal);
}
.media-card-inner:hover {
    transform: translateY(-4px);
    box-shadow: var(--sh-card-hover);
}

.media-card-logo img {
    width: 72px;
    height: 72px;
    object-fit: contain;
    border-radius: var(--r-sm);
}

.media-card-info {
    flex: 1;
}
.media-card-info h3 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--c-text);
    margin-bottom: var(--sp-xs);
}
.media-card-info p {
    font-size: 0.9rem;
    color: var(--c-text-secondary);
}

/* ═══════════════════════════════════════════════════
   AI CAPABILITIES
   ═══════════════════════════════════════════════════ */
.ai-capabilities {
    padding: var(--sp-4xl) 0;
    background: var(--c-bg-alt);
}

.cap-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--sp-lg);
}

.cap-card {
    background: var(--c-bg);
    border-radius: var(--r-xl);
    padding: var(--sp-2xl) var(--sp-xl);
    text-align: center;
    box-shadow: var(--sh-card);
    transition: all var(--tr-normal);
    border: 1px solid transparent;
}
.cap-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--sh-card-hover);
    border-color: rgba(37,99,235,0.1);
}

.cap-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--sp-lg);
    background: linear-gradient(135deg, var(--c-primary), var(--c-primary-light));
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    transition: transform var(--tr-normal);
}
.cap-card:hover .cap-icon {
    transform: scale(1.08);
}

.cap-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--c-text);
    margin-bottom: var(--sp-sm);
}
.cap-card p {
    font-size: 0.9rem;
    color: var(--c-text-secondary);
    line-height: 1.6;
}

/* ═══════════════════════════════════════════════════
   AI FLOW
   ═══════════════════════════════════════════════════ */
.ai-flow {
    padding: var(--sp-4xl) 0;
    background: var(--c-bg);
}

.flow-steps {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
    flex-wrap: wrap;
    padding: var(--sp-xl) 0;
}

.flow-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--sp-sm);
    min-width: 100px;
}

.flow-icon {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    background: var(--c-primary-50);
    border: 2px solid rgba(37,99,235,0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--c-primary);
    transition: all var(--tr-normal);
}
.flow-step:hover .flow-icon {
    background: var(--c-primary);
    color: #fff;
    border-color: var(--c-primary);
    transform: scale(1.1);
}

.flow-label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--c-text);
}

.flow-arrow {
    display: flex;
    align-items: center;
    padding: 0 var(--sp-sm);
    opacity: 0.5;
}

/* ═══════════════════════════════════════════════════
   STATS
   ═══════════════════════════════════════════════════ */
.stats-section {
    padding: var(--sp-3xl) 0;
    background: linear-gradient(135deg, var(--c-primary) 0%, var(--c-primary-dark) 100%);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--sp-xl);
}

.stat-item {
    text-align: center;
    padding: var(--sp-xl);
    border-right: 1px solid rgba(255,255,255,0.15);
}
.stat-item:last-child {
    border-right: none;
}

.stat-number {
    display: inline;
    font-size: clamp(2rem, 4vw, 2.8rem);
    font-weight: 900;
    color: #fff;
    line-height: 1;
}
.stat-unit {
    font-size: clamp(1rem, 2vw, 1.4rem);
    font-weight: 700;
    color: rgba(255,255,255,0.7);
}
.stat-label {
    display: block;
    margin-top: var(--sp-xs);
    font-size: 0.85rem;
    color: rgba(255,255,255,0.65);
    font-weight: 500;
}

/* ═══════════════════════════════════════════════════
   APP SCREENSHOTS (Horizontal Scroll)
   ═══════════════════════════════════════════════════ */
.screenshots {
    padding: var(--sp-4xl) 0;
    background: var(--c-bg-alt);
}

/* 轮播容器 */
.app-carousel {
    position: relative;
    max-width: 640px;
    margin: 0 auto;
    padding: 0 12px;
}

.carousel-viewport {
    overflow: hidden;
    border-radius: 24px;
}

.carousel-track {
    display: flex;
    transition: transform 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    will-change: transform;
}

.carousel-slide {
    flex: 0 0 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--sp-md);
    padding: 8px 0;
}

.screenshot-phone {
    border-radius: 24px;
    overflow: hidden;
    box-shadow: var(--sh-lg);
    border: 3px solid #1a1a2e;
    background: #fff;
    transition: transform var(--tr-normal);
    max-width: 300px;
    width: 100%;
}
.screenshot-phone:hover {
    transform: none;
}
.screenshot-phone img {
    width: 100%;
    height: auto;
    display: block;
}

.screenshot-label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--c-text-secondary);
}

/* 轮播控制按钮（已隐藏 - 仅自动轮播） */
.carousel-btn,
.carousel-dots {
    display: none;
}



/* ═══════════════════════════════════════════════════
   AI HEALTH REPORT
   ═══════════════════════════════════════════════════ */
.ai-report {
    padding: var(--sp-4xl) 0;
    background: var(--c-bg);
}

.report-showcase {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-3xl);
    align-items: center;
}

.report-card {
    position: relative;
    max-width: 380px;
}
.report-card-img {
    width: 100%;
}
.report-card-img img {
    width: 100%;
    height: auto;
    display: block;
}
.report-card-overlay {
    position: absolute;
    top: var(--sp-md);
    left: var(--sp-md);
}
.report-card-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: var(--r-full);
    background: rgba(37,99,235,0.9);
    color: #fff;
    font-size: 0.8rem;
    font-weight: 600;
    backdrop-filter: blur(8px);
}

.report-features {
    display: flex;
    flex-direction: column;
    gap: var(--sp-xl);
}

.report-feature {
    display: flex;
    gap: var(--sp-lg);
    align-items: flex-start;
    padding: var(--sp-lg);
    border-radius: var(--r-lg);
    transition: all var(--tr-normal);
}
.report-feature:hover {
    background: var(--c-primary-50);
}
.report-feature .icon-md {
    flex-shrink: 0;
    color: var(--c-primary);
    margin-top: 2px;
}
.report-feature h4 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--c-text);
    margin-bottom: 4px;
}
.report-feature p {
    font-size: 0.9rem;
    color: var(--c-text-secondary);
    line-height: 1.5;
}

/* ═══════════════════════════════════════════════════
   TESTIMONIALS
   ═══════════════════════════════════════════════════ */
.testimonials {
    padding: var(--sp-4xl) 0;
    background: var(--c-bg-alt);
}

.test-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--sp-lg);
}

.test-card {
    background: var(--c-bg);
    border-radius: var(--r-xl);
    padding: var(--sp-2xl);
    box-shadow: var(--sh-card);
    transition: all var(--tr-normal);
    border: 1px solid transparent;
}
.test-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--sh-card-hover);
    border-color: rgba(37,99,235,0.08);
}

.test-stars {
    color: #FBBF24;
    font-size: 1.1rem;
    margin-bottom: var(--sp-md);
    letter-spacing: 2px;
}

.test-text {
    font-size: 0.95rem;
    color: var(--c-text-secondary);
    line-height: 1.7;
    margin-bottom: var(--sp-xl);
    font-style: italic;
}

.test-author {
    display: flex;
    align-items: center;
    gap: var(--sp-md);
}

.test-avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--c-primary), var(--c-primary-light));
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1rem;
    flex-shrink: 0;
}

.test-name {
    display: block;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--c-text);
}
.test-role {
    display: block;
    font-size: 0.8rem;
    color: var(--c-text-muted);
}

/* ═══════════════════════════════════════════════════
   FAQ
   ═══════════════════════════════════════════════════ */
.faq {
    padding: var(--sp-4xl) 0;
    background: var(--c-bg);
}

.faq-list {
    max-width: 720px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: var(--sp-md);
}

.faq-item {
    background: var(--c-bg);
    border-radius: var(--r-lg);
    border: 1px solid var(--c-border);
    overflow: hidden;
    transition: all var(--tr-normal);
}
.faq-item[open] {
    border-color: rgba(37,99,235,0.2);
    box-shadow: var(--sh-md);
}

.faq-item summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--sp-lg) var(--sp-xl);
    cursor: pointer;
    font-weight: 600;
    font-size: 1rem;
    color: var(--c-text);
    list-style: none;
    transition: color var(--tr-fast);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::marker { display: none; content: ''; }

.faq-item summary:hover {
    color: var(--c-primary);
}

.faq-chevron {
    transition: transform var(--tr-normal);
    color: var(--c-text-muted);
    flex-shrink: 0;
}
.faq-item[open] .faq-chevron {
    transform: rotate(180deg);
    color: var(--c-primary);
}

.faq-answer {
    padding: 0 var(--sp-xl) var(--sp-xl);
    font-size: 0.95rem;
    color: var(--c-text-secondary);
    line-height: 1.7;
    animation: fadeSlideUp 0.3s var(--ease);
}

/* ═══════════════════════════════════════════════════
   DOWNLOAD
   ═══════════════════════════════════════════════════ */
.download {
    padding: var(--sp-4xl) 0;
    background: var(--c-bg-alt);
}

.dl-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-3xl);
    align-items: center;
    max-width: 960px;
    margin: 0 auto;
}

.dl-info {
    text-align: center;
}

.dl-app-icon {
    margin-bottom: var(--sp-lg);
}
.dl-app-icon img {
    width: 80px;
    height: 80px;
    border-radius: var(--r-lg);
    margin: 0 auto;
    box-shadow: var(--sh-md);
}

.dl-info h3 {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--c-text);
    margin-bottom: var(--sp-xs);
}

.dl-tagline {
    color: var(--c-text-muted);
    font-size: 0.95rem;
    margin-bottom: var(--sp-lg);
}

.dl-meta {
    display: flex;
    justify-content: center;
    gap: var(--sp-lg);
    margin-bottom: var(--sp-xl);
    font-size: 0.8rem;
    color: var(--c-text-muted);
    flex-wrap: wrap;
}
.dl-meta span {
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.dl-btn {
    width: 100%;
    max-width: 300px;
    padding: 16px 32px;
    font-size: 1.05rem;
}

.dl-req {
    margin-top: var(--sp-md);
    font-size: 0.8rem;
    color: var(--c-text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
}

.dl-platforms {
    display: flex;
    justify-content: center;
    gap: var(--sp-sm);
    margin-top: var(--sp-lg);
    flex-wrap: wrap;
}

.dl-platform {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 6px 14px;
    border-radius: var(--r-full);
    font-size: 0.8rem;
    font-weight: 500;
}
.dl-platform.available {
    background: var(--c-success-bg);
    color: var(--c-success);
}
.dl-platform.coming {
    background: rgba(251,191,36,0.1);
    color: #D97706;
}

/* QR section */
.dl-qr {
    text-align: center;
    padding: var(--sp-2xl);
    background: var(--c-bg);
    border-radius: var(--r-xl);
    box-shadow: var(--sh-card);
}

.qr-img {
    width: 180px;
    height: 180px;
    border-radius: var(--r-md);
    margin: 0 auto var(--sp-lg);
    box-shadow: var(--sh-sm);
    border: 3px solid var(--c-border);
    transition: transform var(--tr-normal);
}
.qr-img:hover {
    transform: scale(1.05);
}

.dl-qr-text {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--c-text);
    margin-bottom: var(--sp-xs);
}
.dl-qr-sub {
    font-size: 0.8rem;
    color: var(--c-text-muted);
}

/* ═══════════════════════════════════════════════════
   FOOTER
   ═══════════════════════════════════════════════════ */
footer {
    background: #0F172A;
    color: rgba(255,255,255,0.8);
    padding: var(--sp-3xl) 0 var(--sp-xl);
}

.footer-inner {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--sp-lg);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr 1fr;
    gap: var(--sp-2xl);
    margin-bottom: var(--sp-2xl);
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: var(--sp-md);
}
.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--sp-sm);
}
.footer-logo img {
    height: 32px;
    width: auto;
    filter: brightness(10);
}
.footer-logo span {
    font-size: 1rem;
    font-weight: 700;
    color: #fff;
}
.footer-desc {
    font-size: 0.85rem;
    color: rgba(255,255,255,0.5);
    line-height: 1.6;
}

.footer-col h4 {
    font-size: 0.85rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: var(--sp-md);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.footer-col ul {
    display: flex;
    flex-direction: column;
    gap: var(--sp-sm);
}
.footer-col a {
    font-size: 0.85rem;
    color: rgba(255,255,255,0.55);
    transition: color var(--tr-fast);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.footer-col a:hover {
    color: var(--c-primary-light);
}

.footer-bottom {
    padding-top: var(--sp-xl);
    border-top: 1px solid rgba(255,255,255,0.08);
    text-align: center;
}

.footer-compliance {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: var(--sp-sm) var(--sp-lg);
    background: rgba(255,255,255,0.05);
    border-radius: var(--r-sm);
    margin-bottom: var(--sp-md);
    font-size: 0.78rem;
    color: rgba(255,255,255,0.45);
}

.footer-bottom p {
    font-size: 0.8rem;
    color: rgba(255,255,255,0.35);
}

/* ═══════════════════════════════════════════════════
   KEYFRAME ANIMATIONS
   ═══════════════════════════════════════════════════ */
@keyframes fadeSlideUp {
    from { opacity: 0; transform: translateY(24px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes phoneFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-14px); }
}

@keyframes cardFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

/* ═══════════════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════════════ */
@media (max-width: 1024px) {
    .cap-grid { grid-template-columns: repeat(2, 1fr); }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .stat-item:nth-child(2) { border-right: none; }
    .footer-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 768px) {
    .mobile-menu-toggle { display: flex; }

    nav ul {
        position: fixed;
        top: 72px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 72px);
        background: rgba(255,255,255,0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        align-items: stretch;
        padding: var(--sp-lg);
        transition: left var(--tr-normal);
        gap: var(--sp-sm);
        z-index: 999;
    }
    nav ul.active { left: 0; }

    nav ul li a {
        display: block;
        padding: var(--sp-md) var(--sp-lg);
        border-radius: var(--r-md);
        font-size: 1rem;
    }
    .nav-btn-primary, .nav-btn-outline {
        text-align: center;
        margin-top: var(--sp-sm);
    }

    .hero-grid-layout {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--sp-2xl);
    }

    .hero-actions { justify-content: center; }

    .hero-stats {
        justify-content: center;
    }

    .float-card { display: none; }

    .cap-grid { grid-template-columns: 1fr; max-width: 400px; margin: 0 auto; }

    .flow-steps { flex-direction: column; }
    .flow-arrow { transform: rotate(90deg); }

    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .stat-item { border-right: none !important; }

    .app-carousel { max-width: 100%; padding: 0 8px; }
    .screenshot-phone { max-width: 260px; }

    .report-showcase { grid-template-columns: 1fr; }

    .test-grid { grid-template-columns: 1fr; max-width: 480px; margin: 0 auto; }

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

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

@media (max-width: 480px) {
    .hero-headline { font-size: 1.8rem; }
    .hero-stats { flex-direction: column; align-items: center; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .media-card-inner { flex-direction: column; text-align: center; }
}