/* ================================================
   SMOKELESS AI — Landing Page Styles
   ================================================ */

/* Design Tokens */
:root {
    --primary: #14B8A6;
    --primary-dark: #0F766E;
    --primary-light: #5EEAD4;
    --accent: #0284C7;
    --accent-light: #38BDF8;
    
    --bg-page: #FFFFFF;
    --bg-card: #F8FAFC;
    --bg-surface-light: #F1F5F9;
    
    --text-primary: #020617;
    --text-secondary: #475569;
    --text-tertiary: #94A3B8;
    --border-color: #E2E8F0;
    
    --radius-xl: 24px;
    --radius-2xl: 32px;
}

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

html { scroll-behavior: smooth; }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--bg-page);
    color: var(--text-primary);
    overflow-x: hidden;
    line-height: 1.6;
    letter-spacing: -0.01em;
    -webkit-font-smoothing: antialiased;
}

/* ------------------------------------------------
   Scroll Reveal
   ------------------------------------------------ */
.fade-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s cubic-bezier(.16,1,.3,1), transform 0.7s cubic-bezier(.16,1,.3,1);
    transition-delay: var(--delay, 0s);
}

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

/* ------------------------------------------------
   Navigation
   ------------------------------------------------ */
.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 5%;
    max-width: 1400px;
    margin: 0 auto;
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(250,252,255,0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid transparent;
    transition: border-color 0.3s;
}

.nav-container.scrolled {
    border-bottom-color: var(--border-color);
}

.logo {
    font-size: 1.4rem;
    font-weight: 900;
    letter-spacing: -0.5px;
}

.logo-accent { color: var(--primary); }

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    margin-left: 2rem;
    font-size: 0.9rem;
    font-weight: 600;
    transition: color 0.2s;
}

.nav-links a:hover { color: var(--primary); }

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-primary);
}

/* Mobile Nav Overlay */
.mobile-nav-overlay {
    position: fixed;
    inset: 0;
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(20px);
    z-index: 200;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s;
}

.mobile-nav-overlay.open {
    opacity: 1;
    pointer-events: all;
}

.mobile-nav-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
}

.mobile-nav-content a {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
}

.mobile-nav-close {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-primary);
}

/* ------------------------------------------------
   Section Shared
   ------------------------------------------------ */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 900;
    letter-spacing: -1.5px;
    line-height: 1.15;
    margin-bottom: 1rem;
}

.section-header p {
    color: var(--text-secondary);
    font-size: 1.15rem;
    max-width: 560px;
    margin: 0 auto;
}

.section-badge {
    display: inline-block;
    background: rgba(20,184,166,0.08);
    color: var(--primary-dark);
    padding: 0.4rem 1rem;
    border-radius: 2rem;
    font-size: 0.75rem;
    font-weight: 800;
    letter-spacing: 1.5px;
    margin-bottom: 1.25rem;
    border: 1px solid rgba(20,184,166,0.2);
}

/* ------------------------------------------------
   Hero
   ------------------------------------------------ */
.hero {
    width: 100%;
    position: relative;
    overflow: hidden;
    min-height: 92vh;
    background: #FAFCFF;
}

/* Ambient gradient blobs */
.hero-bg {
    position: absolute;
    inset: 0;
    overflow: hidden;
    pointer-events: none;
    z-index: 0;
}

.hero-blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.5;
    will-change: transform;
}

.blob-1 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(20,184,166,0.18) 0%, transparent 70%);
    top: -10%;
    right: -5%;
    animation: blob-drift-1 18s ease-in-out infinite;
}

.blob-2 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(2,132,199,0.12) 0%, transparent 70%);
    bottom: -15%;
    left: -8%;
    animation: blob-drift-2 22s ease-in-out infinite;
}

.blob-3 {
    width: 350px;
    height: 350px;
    background: radial-gradient(circle, rgba(94,234,212,0.15) 0%, transparent 70%);
    top: 40%;
    left: 45%;
    animation: blob-drift-3 15s ease-in-out infinite;
}

@keyframes blob-drift-1 {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(-40px, 30px) scale(1.05); }
    66% { transform: translate(20px, -20px) scale(0.95); }
}

@keyframes blob-drift-2 {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -25px) scale(1.08); }
    66% { transform: translate(-20px, 15px) scale(0.96); }
}

@keyframes blob-drift-3 {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(-30px, 20px) scale(1.1); }
}

/* Subtle grain texture */
.hero-grain {
    position: absolute;
    inset: 0;
    opacity: 0.03;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' 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");
    background-repeat: repeat;
    background-size: 200px;
    pointer-events: none;
    z-index: 1;
}

.hero .hero-inner {
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    text-align: left;
    padding: 7rem 5% 5rem;
    max-width: 1400px;
    margin: 0 auto;
    gap: 4rem;
    position: relative;
    z-index: 2;
}

.hero-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    background: rgba(20,184,166,0.06);
    color: var(--primary-dark);
    padding: 0.55rem 1.3rem;
    border-radius: 2rem;
    font-size: 0.72rem;
    font-weight: 800;
    letter-spacing: 1.5px;
    margin-bottom: 1.75rem;
    border: 1px solid rgba(20,184,166,0.15);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.badge-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--primary);
    box-shadow: 0 0 8px rgba(20,184,166,0.6);
    animation: badge-pulse 2s ease-in-out infinite;
}

@keyframes badge-pulse {
    0%, 100% { opacity: 1; box-shadow: 0 0 8px rgba(20,184,166,0.6); }
    50% { opacity: 0.5; box-shadow: 0 0 4px rgba(20,184,166,0.3); }
}

.hero-title {
    font-size: clamp(2.8rem, 5.5vw, 4.8rem);
    font-weight: 900;
    line-height: 1.08;
    margin-bottom: 1.75rem;
    letter-spacing: -2px;
    max-width: 680px;
}

.hero-accent {
    color: var(--primary);
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 2.25rem;
    max-width: 500px;
    line-height: 1.75;
}

.cta-group {
    display: flex;
    justify-content: flex-start;
    gap: 1rem;
    flex-wrap: wrap;
}

.store-badge {
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275), opacity 0.3s, filter 0.3s;
}

.store-badge:hover { transform: translateY(-2px) scale(1.03); }
.store-badge:active { transform: scale(0.96); opacity: 0.8; }

.hero-microcopy {
    font-size: 0.82rem;
    color: var(--text-tertiary);
    margin-top: 0.75rem;
    font-weight: 500;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 2.2rem;
    border-radius: 100px;
    font-weight: 700;
    text-decoration: none;
    font-size: 1rem;
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275), box-shadow 0.3s;
    border: none;
    cursor: pointer;
}

.btn:active { transform: scale(0.96); }

.btn-primary {
    background-color: var(--primary);
    color: #fff;
    box-shadow: 0 4px 14px rgba(20,184,166,0.3);
}

.btn-primary:hover { box-shadow: 0 6px 20px rgba(20,184,166,0.4); }

/* Hero Social Proof */
.hero-proof {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-top: 2.25rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.proof-avatars {
    display: flex;
    flex-shrink: 0;
}

.avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    object-fit: cover;
    border: 2.5px solid #fff;
    margin-right: -10px;
}

.proof-text {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
}

.proof-stars {
    display: flex;
    gap: 1px;
}

.hero-proof span {
    font-size: 0.85rem;
    color: var(--text-tertiary);
    font-weight: 500;
}

/* ------------------------------------------------
   Phone Mockup
   ------------------------------------------------ */
.phone-container {
    flex: 1;
    display: flex;
    justify-content: center;
    perspective: 1200px;
    position: relative;
}

.phone-glow {
    position: absolute;
    width: 420px;
    height: 420px;
    background: radial-gradient(circle, rgba(20,184,166,0.2) 0%, rgba(2,132,199,0.06) 50%, transparent 70%);
    border-radius: 50%;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 0;
    filter: blur(50px);
    animation: glow-breathe 6s ease-in-out infinite;
}

@keyframes glow-breathe {
    0%, 100% { opacity: 0.7; transform: translate(-50%, -50%) scale(1); }
    50% { opacity: 1; transform: translate(-50%, -50%) scale(1.08); }
}

.phone-frame {
    width: 300px;
    height: 620px;
    background: linear-gradient(145deg, #1a1a1a, #0a0a0a);
    border-radius: 44px;
    padding: 12px;
    box-shadow:
        inset 0 1px 0 rgba(255,255,255,0.1),
        inset 0 -1px 0 rgba(0,0,0,0.3),
        0 0 0 1px rgba(255,255,255,0.05);
    border: 1.5px solid #2a2a2a;
    position: relative;
    z-index: 1;
    transition: transform 0.6s cubic-bezier(.16,1,.3,1);
}

.phone-frame:hover {
    transform: translateY(-4px);
}

.hardware-button {
    position: absolute;
    background: linear-gradient(180deg, #333, #222);
    border-radius: 2px;
}
.hardware-mute { width: 3px; height: 22px; left: -3.5px; top: 105px; }
.hardware-vol-up { width: 3px; height: 45px; left: -3.5px; top: 145px; }
.hardware-vol-down { width: 3px; height: 45px; left: -3.5px; top: 200px; }
.hardware-power { width: 3px; height: 70px; right: -3.5px; top: 170px; }

.phone-glare {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    border-radius: 44px;
    background: linear-gradient(105deg, rgba(255,255,255,0.06) 0%, rgba(255,255,255,0) 35%);
    pointer-events: none;
    z-index: 20;
}

.phone-content {
    background: #080E16;
    width: 100%;
    height: 100%;
    border-radius: 34px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    position: relative;
}

.dynamic-island {
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 28px;
    background: #000;
    border-radius: 18px;
    z-index: 10;
}

/* Simulated App UI — matches Flutter homescreen */
.app-header {
    display: flex;
    justify-content: space-between;
    padding: 2.5rem 1.25rem 0.6rem;
    align-items: center;
}

.app-logo {
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.app-trust-bar {
    margin: 0 1.25rem 0.75rem;
    padding: 0.4rem;
    background: rgba(62, 207, 178, 0.06);
    border: 1px solid rgba(62, 207, 178, 0.12);
    border-radius: 10px;
    display: flex;
    justify-content: space-evenly;
    align-items: center;
}

.trust-item {
    display: flex;
    align-items: center;
    gap: 0.2rem;
    color: #3ECFB2;
    font-size: 0.55rem;
    font-weight: 600;
}
.trust-item i { width: 10px; }

.trust-dot {
    width: 3px; height: 3px;
    background: rgba(62, 207, 178, 0.3);
    border-radius: 50%;
}

.app-streak-card {
    margin: 0 1.25rem;
    padding: 0.9rem;
    background: #0F1A26;
    border: 1px solid rgba(62, 207, 178, 0.1);
    border-radius: 16px;
    box-shadow: 0 6px 24px rgba(62, 207, 178, 0.06);
    text-align: center;
    display: flex;
    flex-direction: column;
}

.streak-eyebrow {
    color: rgba(62, 207, 178, 0.6);
    font-size: 0.45rem;
    letter-spacing: 2.5px;
    font-weight: 700;
    margin-bottom: 0.2rem;
}

.streak-days {
    font-size: 2.8rem;
    font-weight: 800;
    color: #3ECFB2;
    line-height: 1;
}

.streak-subtitle {
    color: #5A7A94;
    font-size: 0.45rem;
    letter-spacing: 2.5px;
    font-weight: 600;
    margin-top: 0.15rem;
    margin-bottom: 0.5rem;
}

.streak-timer {
    color: #94ADC0;
    font-size: 1rem;
    font-weight: 300;
    font-variant-numeric: tabular-nums;
}

/* Trial / Premium Bar */
.app-trial-bar {
    margin: 0.6rem 1.25rem 0;
    padding: 0.55rem 0.75rem;
    background: #162536;
    border-radius: 10px;
    border: 1px solid #1E3044;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.trial-left {
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.trial-left span {
    color: #EDF2F7;
    font-size: 0.6rem;
    font-weight: 800;
    letter-spacing: 0.5px;
}

/* Voice Orb — matches Flutter VoiceOrb widget */
.orb-container {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    min-height: 90px;
}

.orb-core {
    width: 80px;
    height: 80px;
    background: radial-gradient(circle at 35% 35%, #6EDECB 0%, #3ECFB2 55%, #2AA88E 100%);
    box-shadow: 0 0 32px rgba(62, 207, 178, 0.3), 0 0 12px rgba(62, 207, 178, 0.15), inset -6px -6px 14px rgba(0,0,0,0.15);
    border-radius: 50%;
    z-index: 5;
    animation: orb-pulse 2.5s ease-in-out infinite;
}

@keyframes orb-pulse {
    0%, 100% { transform: scale(1); box-shadow: 0 0 32px rgba(62, 207, 178, 0.3), 0 0 12px rgba(62, 207, 178, 0.15); }
    50% { transform: scale(1.04); box-shadow: 0 0 48px rgba(62, 207, 178, 0.4), 0 0 20px rgba(62, 207, 178, 0.2); }
}

.orb-ring {
    position: absolute;
    border-radius: 50%;
    border: 1.5px solid #3ECFB2;
    opacity: 0.15;
    animation: orb-ring-breathe 3s ease-in-out infinite;
}

.ring-1 { width: 95px; height: 95px; animation-delay: 0s; }
.ring-2 { width: 112px; height: 112px; animation-delay: -1s; border-width: 1px; opacity: 0.1; }
.ring-3 { width: 130px; height: 130px; animation-delay: -2s; border-width: 1px; opacity: 0.06; }

@keyframes orb-ring-breathe {
    0%, 100% { transform: scale(1); opacity: 0.15; }
    50% { transform: scale(1.06); opacity: 0.08; }
}

/* Talk Button */
.app-talk-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.35rem;
    margin: 0 1.25rem 0.5rem;
    padding: 0.5rem;
    background: rgba(62, 207, 178, 0.1);
    border: 1px solid rgba(62, 207, 178, 0.2);
    border-radius: 24px;
}

.app-talk-btn span {
    color: #3ECFB2;
    font-size: 0.6rem;
    font-weight: 700;
    letter-spacing: 0.3px;
}

/* Bottom Nav Bar */
.app-bottom-nav {
    display: flex;
    justify-content: space-around;
    align-items: center;
    padding: 0.4rem 0.25rem 0.6rem;
    border-top: 1px solid #1E3044;
    background: #0F1A26;
    margin-top: auto;
}

.nav-tab {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.15rem;
    color: #5A7A94;
    cursor: default;
}

.nav-tab span {
    font-size: 0.45rem;
    font-weight: 500;
}

.nav-tab-active {
    color: #3ECFB2;
}

.nav-tab-active span {
    font-weight: 600;
}

/* ------------------------------------------------
   Trust Strip
   ------------------------------------------------ */
.trust-strip {
    text-align: center;
    padding: 3rem 5%;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.trust-strip-label {
    display: block;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 1.5px;
    color: var(--text-tertiary);
    text-transform: uppercase;
    margin-bottom: 1rem;
}

.trust-strip-items {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.trust-strip-items span {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-secondary);
}

.trust-strip-dot {
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--border-color);
    display: inline-block;
}

/* ------------------------------------------------
   Bento Grid
   ------------------------------------------------ */
.bento-section {
    padding: 6rem 5%;
    max-width: 1200px;
    margin: 0 auto;
}

.bento-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-auto-rows: minmax(260px, auto);
    gap: 1.25rem;
}

.bento-card {
    background-color: var(--bg-card);
    border-radius: var(--radius-2xl);
    padding: 2.25rem;
    transition: transform 0.35s cubic-bezier(.16,1,.3,1);
    overflow: hidden;
    position: relative;
    display: flex;
    flex-direction: column;
}

.bento-card:hover {
    transform: translateY(-3px);
}

.bento-card h3 {
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 0.6rem;
    letter-spacing: -0.5px;
}

.bento-card h4 {
    font-size: 1.15rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    letter-spacing: -0.3px;
}

.bento-card p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.span-col-2 { grid-column: span 2; }
.span-col-3 { grid-column: span 3; }
.span-row-2 { grid-row: span 2; }

/* Bento Icon */
.bento-icon-wrap {
    width: 44px;
    height: 44px;
    background: rgba(20,184,166,0.08);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.25rem;
}

.bento-icon {
    width: 22px;
    height: 22px;
    color: var(--primary);
}

/* Bento Voice Visual */
.bento-visual {
    margin-top: auto;
    padding-top: 1.5rem;
}

.voice-visual {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    height: 60px;
}

.voice-wave-bar {
    width: 4px;
    background: var(--primary);
    border-radius: 4px;
    opacity: 0.5;
    animation: voice-wave 1.2s ease-in-out infinite;
}

.voice-wave-bar:nth-child(1)  { height: 16px; animation-delay: 0s; }
.voice-wave-bar:nth-child(2)  { height: 28px; animation-delay: 0.1s; }
.voice-wave-bar:nth-child(3)  { height: 40px; animation-delay: 0.2s; }
.voice-wave-bar:nth-child(4)  { height: 52px; animation-delay: 0.3s; }
.voice-wave-bar:nth-child(5)  { height: 36px; animation-delay: 0.15s; }
.voice-wave-bar:nth-child(6)  { height: 48px; animation-delay: 0.25s; }
.voice-wave-bar:nth-child(7)  { height: 20px; animation-delay: 0.35s; }
.voice-wave-bar:nth-child(8)  { height: 44px; animation-delay: 0.05s; }
.voice-wave-bar:nth-child(9)  { height: 32px; animation-delay: 0.2s; }
.voice-wave-bar:nth-child(10) { height: 50px; animation-delay: 0.1s; }
.voice-wave-bar:nth-child(11) { height: 24px; animation-delay: 0.3s; }
.voice-wave-bar:nth-child(12) { height: 14px; animation-delay: 0.4s; }

@keyframes voice-wave {
    0%, 100% { transform: scaleY(0.4); opacity: 0.3; }
    50% { transform: scaleY(1); opacity: 0.7; }
}

/* Bento Health Timeline */
.health-timeline {
    margin-top: 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 0;
    flex: 1;
}

.ht-item {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 0.6rem 0;
    border-left: 2px solid var(--border-color);
    padding-left: 1rem;
    position: relative;
}

.ht-item.ht-done { border-left-color: var(--primary); }
.ht-item.ht-active { border-left-color: var(--primary); }

.ht-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--border-color);
    border: 2px solid var(--bg-card);
    position: absolute;
    left: -6px;
    top: 0.75rem;
    flex-shrink: 0;
}

.ht-item.ht-done .ht-dot { background: var(--primary); }
.ht-item.ht-active .ht-dot {
    background: var(--primary);
    box-shadow: 0 0 0 4px rgba(20,184,166,0.15);
}

.ht-content {
    display: flex;
    flex-direction: column;
    gap: 0.1rem;
}

.ht-content strong {
    font-size: 0.85rem;
    color: var(--text-primary);
}

.ht-content span {
    font-size: 0.8rem;
    color: var(--text-tertiary);
}

/* Bento Savings */
.savings-display {
    margin-top: auto;
    padding-top: 1.5rem;
    text-align: center;
}

.savings-amount {
    display: block;
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--primary);
    letter-spacing: -1px;
}

.savings-label {
    font-size: 0.8rem;
    color: var(--text-tertiary);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Bento Split Card */
.bento-split {
    flex-direction: row !important;
    align-items: flex-start;
    gap: 0;
}

.bento-split-item {
    flex: 1;
    padding: 0 1.25rem;
}

.bento-split-item:first-child { padding-left: 0; }
.bento-split-item:last-child { padding-right: 0; }

.bento-split-divider {
    width: 1px;
    background: var(--border-color);
    align-self: stretch;
}

/* ------------------------------------------------
   Adaptive Intelligence
   ------------------------------------------------ */
.adaptive-section {
    padding: 6rem 5%;
    max-width: 1200px;
    margin: 0 auto;
}

.adaptive-inner {
    display: flex;
    align-items: center;
    gap: 5rem;
}

.adaptive-text {
    flex: 1;
}

.adaptive-text h2 {
    font-size: clamp(2rem, 4vw, 2.8rem);
    font-weight: 900;
    letter-spacing: -1.5px;
    line-height: 1.12;
    margin-bottom: 1.25rem;
}

.adaptive-desc {
    font-size: 1.05rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 2.25rem;
    max-width: 520px;
}

.adaptive-features {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.adaptive-feature {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.adaptive-icon-wrap {
    width: 40px;
    height: 40px;
    background: rgba(20,184,166,0.08);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.adaptive-icon {
    width: 20px;
    height: 20px;
    color: var(--primary);
}

.adaptive-feature strong {
    display: block;
    font-size: 0.95rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 0.2rem;
}

.adaptive-feature span {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Adaptive Visual Cards */
.adaptive-visual {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    max-width: 380px;
}

.adaptive-card {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: 1.25rem 1.5rem;
}

.ac-label {
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--text-tertiary);
    margin-bottom: 0.5rem;
}

.ac-value {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.3rem;
}

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

@media (max-width: 968px) {
    .adaptive-inner {
        flex-direction: column;
        gap: 3rem;
    }
    .adaptive-visual {
        max-width: 100%;
    }
}

/* ------------------------------------------------
   How It Works
   ------------------------------------------------ */
.how-section {
    padding: 6rem 5%;
    max-width: 1200px;
    margin: 0 auto;
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.step-card {
    padding: 2.5rem 2rem;
    border-top: 3px solid var(--primary);
    background: var(--bg-card);
    border-radius: var(--radius-xl);
}

.step-number {
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--primary);
    margin-bottom: 1.25rem;
    letter-spacing: -1px;
    line-height: 1;
}

.step-card h3 {
    font-size: 1.25rem;
    font-weight: 800;
    margin-bottom: 0.75rem;
    letter-spacing: -0.3px;
}

.step-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.65;
}

/* ------------------------------------------------
   Science
   ------------------------------------------------ */
.science-section {
    padding: 6rem 5%;
    max-width: 1200px;
    margin: 0 auto;
}

.science-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.science-card {
    text-align: center;
    padding: 3rem 2rem;
    background: var(--bg-card);
    border-radius: var(--radius-2xl);
}

.science-stat {
    font-size: 3.5rem;
    font-weight: 900;
    color: var(--primary);
    letter-spacing: -2px;
    margin-bottom: 1rem;
    line-height: 1;
}

.science-card p {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.6;
}

/* ------------------------------------------------
   Testimonials Carousel
   ------------------------------------------------ */
.testimonials-section {
    padding: 6rem 0;
    overflow: hidden;
}

.testimonials-section .section-header {
    padding: 0 5%;
}

.carousel-track-wrapper {
    overflow: hidden;
    position: relative;
    padding: 0.5rem 0;
    mask-image: linear-gradient(to right, transparent 0%, black 8%, black 92%, transparent 100%);
    -webkit-mask-image: linear-gradient(to right, transparent 0%, black 8%, black 92%, transparent 100%);
}

.carousel-track {
    display: flex;
    gap: 1.25rem;
    width: max-content;
    will-change: transform;
}

.carousel-track.scroll-left {
    animation: scroll-left 90s linear infinite;
}

.carousel-track.scroll-right {
    animation: scroll-right 90s linear infinite;
}

@keyframes scroll-left {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

@keyframes scroll-right {
    0% { transform: translateX(-50%); }
    100% { transform: translateX(0); }
}

.carousel-track:hover {
    animation-play-state: running;
}

.t-card {
    flex-shrink: 0;
    width: 360px;
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: 1.75rem;
    transition: transform 0.3s;
}

.t-card:hover {
    transform: translateY(-2px);
}

.t-card-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.t-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
    flex-shrink: 0;
}

.t-author {
    display: flex;
    flex-direction: column;
    flex: 1;
    min-width: 0;
}

.t-author strong {
    font-size: 0.95rem;
    color: var(--text-primary);
    font-weight: 700;
}

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

.t-stars {
    display: flex;
    gap: 1px;
    flex-shrink: 0;
}

.star-filled {
    width: 16px;
    height: 16px;
    color: #F59E0B;
    fill: #F59E0B;
}

.t-card p {
    font-size: 0.92rem;
    color: var(--text-secondary);
    line-height: 1.65;
}

/* ------------------------------------------------
   FAQ
   ------------------------------------------------ */
.faq-section {
    padding: 6rem 5%;
    max-width: 720px;
    margin: 0 auto;
}

.faq-list {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.faq-item {
    border-bottom: 1px solid rgba(226,232,240,0.6);
}

.faq-item summary {
    padding: 1.25rem 0;
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-primary);
    cursor: pointer;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-item summary::after {
    content: '+';
    font-size: 1.5rem;
    font-weight: 300;
    color: var(--text-tertiary);
    transition: transform 0.3s;
}

.faq-item[open] summary::after {
    transform: rotate(45deg);
}

.faq-item summary::-webkit-details-marker { display: none; }

.faq-item p {
    padding: 0 0 1.25rem;
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ------------------------------------------------
   CTA Banner
   ------------------------------------------------ */
.cta-banner {
    background: linear-gradient(180deg, var(--bg-page) 0%, var(--bg-surface-light) 100%);
    padding: 6rem 5%;
    text-align: center;
}

.cta-inner {
    max-width: 600px;
    margin: 0 auto;
}

.cta-banner h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 900;
    letter-spacing: -1.5px;
    margin-bottom: 1rem;
    line-height: 1.15;
}

.cta-banner p {
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    font-size: 1.15rem;
}

/* ------------------------------------------------
   Footer
   ------------------------------------------------ */
.footer {
    padding: 3rem 5%;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.footer-links {
    display: flex;
    gap: 2rem;
}

.footer-links a {
    color: var(--text-tertiary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.2s;
}

.footer-links a:hover { color: var(--primary); }

/* ------------------------------------------------
   Responsive
   ------------------------------------------------ */
@media (max-width: 968px) {
    .nav-links { display: none; }
    .mobile-menu-btn { display: block; }

    .hero { min-height: auto; }
    .hero .hero-inner {
        flex-direction: column;
        text-align: center;
        padding-top: 3rem;
        gap: 3rem;
    }
    .hero-content { align-items: center; }
    .hero-subtitle { margin-left: auto; margin-right: auto; }
    .hero-proof { justify-content: center; }
    .cta-group { justify-content: center; }

    .phone-frame:hover { transform: none; }

    .blob-1 { width: 350px; height: 350px; }
    .blob-2 { width: 300px; height: 300px; }
    .blob-3 { width: 200px; height: 200px; }

    .bento-grid { grid-template-columns: 1fr; }
    .span-col-2, .span-col-3 { grid-column: span 1; }
    .span-row-2 { grid-row: span 1; }

    .bento-split { flex-direction: column !important; }
    .bento-split-divider { width: 100%; height: 1px; margin: 1rem 0; }
    .bento-split-item { padding: 0 !important; }

    .steps-grid { grid-template-columns: 1fr; }
    .science-grid { grid-template-columns: 1fr; }

    .trust-strip-items { gap: 1rem; }
}

@media (max-width: 480px) {
    .hero-title { font-size: 2.4rem; letter-spacing: -1px; }
    .cta-group { flex-direction: column; align-items: center; }
    .section-header h2 { font-size: 1.8rem; }
    .hero-proof { flex-direction: column; gap: 0.75rem; }
    .proof-text { align-items: center; }
}