/* ==========================================
   SYNTHORA — Design System & Variables
   ========================================== */
:root {
    /* Colors — Platform-inspired palette */
    --bg-primary: #050507;
    --bg-secondary: #0A0A0F;
    --bg-tertiary: #0F0F17;
    --bg-card: #111119;
    --bg-glass: rgba(255,255,255,0.04);
    --bg-glass-hover: rgba(255,255,255,0.07);

    --accent: #FF6D3D;
    --accent-hover: #FF8A5C;
    --accent-glow: rgba(255,109,61,0.3);
    --accent-soft: rgba(255,109,61,0.08);

    --text-primary: #FFFFFF;
    --text-secondary: #A1A1A6;
    --text-muted: #5A5A64;

    --border: rgba(255,255,255,0.06);
    --border-hover: rgba(255,255,255,0.12);

    --red: #FF4D4F;
    --green: #52C41A;

    /* Typography */
    --font-display: 'Syne', sans-serif;
    --font-body: 'Space Grotesk', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    /* Spacing */
    --section-pad: clamp(80px, 10vw, 140px);
    --container-max: 1280px;
    --container-pad: clamp(20px, 4vw, 40px);

    /* Transitions */
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);

    /* Border radius */
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-xl: 28px;
}

/* ==========================================
   RESET & BASE
   ========================================== */
*, *::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-body);
    font-weight: 400;
    color: var(--text-primary);
    background: var(--bg-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

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

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

button {
    background: none;
    border: none;
    cursor: pointer;
    color: inherit;
    font-family: inherit;
}

ul {
    list-style: none;
}

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-pad);
}

/* ==========================================
   CURSOR ORB
   ========================================== */
.cursor-orb {
    position: fixed;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
    pointer-events: none;
    z-index: 9999;
    opacity: 0;
    transform: translate(-50%, -50%);
    transition: opacity 0.4s;
    mix-blend-mode: screen;
}

body:hover .cursor-orb {
    opacity: 0.5;
}

@media (max-width: 768px) {
    .cursor-orb { display: none; }
}

/* ==========================================
   NAVIGATION
   ========================================== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: all 0.4s var(--ease-out);
}

.nav.scrolled {
    background: rgba(5,5,7,0.85);
    backdrop-filter: blur(20px) saturate(1.8);
    -webkit-backdrop-filter: blur(20px) saturate(1.8);
    border-bottom: 1px solid var(--border);
    padding: 10px 0;
}

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

.nav__logo {
    display: flex;
    align-items: center;
    gap: 10px;
    z-index: 10;
}

.nav__logo-mark {
    transition: transform 0.4s var(--ease-spring);
}

.nav__logo:hover .nav__logo-mark {
    transform: rotate(-8deg) scale(1.08);
}

.nav__logo-text {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 20px;
    letter-spacing: -0.02em;
}

.nav__links {
    display: flex;
    gap: 32px;
}

.nav__link {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    transition: color 0.3s;
    position: relative;
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    border-radius: 2px;
    transition: width 0.3s var(--ease-out);
}

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

.nav__link:hover::after {
    width: 100%;
}

.nav__cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: var(--accent);
    color: #fff;
    border-radius: 100px;
    font-size: 14px;
    font-weight: 600;
    transition: all 0.3s var(--ease-out);
    white-space: nowrap;
}

.nav__cta:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 8px 24px var(--accent-glow);
}

.nav__burger {
    display: none;
    flex-direction: column;
    gap: 5px;
    width: 24px;
    z-index: 10;
}

.nav__burger span {
    display: block;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all 0.3s var(--ease-out);
}

.nav__burger.active span:first-child {
    transform: translateY(3.5px) rotate(45deg);
}

.nav__burger.active span:nth-child(2) {
    opacity: 0;
}

.nav__burger.active span:last-child {
    transform: translateY(-3.5px) rotate(-45deg);
}

@media (max-width: 768px) {
    .nav__links { display: none; }
    .nav__cta:not(.mobile-menu__cta) { display: none; }
    .nav__burger { display: flex; }
}

/* Mobile menu */
.mobile-menu {
    position: fixed;
    inset: 0;
    z-index: 999;
    background: rgba(5,5,7,0.96);
    backdrop-filter: blur(30px);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.4s var(--ease-out);
}

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

.mobile-menu__inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 28px;
}

.mobile-menu__link {
    font-family: var(--font-display);
    font-size: 28px;
    font-weight: 600;
    color: var(--text-secondary);
    transition: color 0.3s;
}

.mobile-menu__link:hover {
    color: var(--accent);
}

.mobile-menu__cta {
    margin-top: 16px;
}

/* ==========================================
   HERO — Asymmetric Split Layout
   ========================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
    padding: 100px 0 60px;
}

.hero__canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.hero__noise {
    position: absolute;
    inset: 0;
    z-index: 1;
    pointer-events: none;
    opacity: 0.025;
    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: 256px;
}

.hero__layout {
    position: relative;
    z-index: 3;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-pad);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
    width: 100%;
}

/* ---- Hero Left (Text) ---- */
.hero__left {
    padding-right: 24px;
}

.hero__tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 28px;
}

.hero__tag-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent);
    animation: pulse-dot 2s ease-in-out infinite;
    box-shadow: 0 0 12px var(--accent-glow);
}

@keyframes pulse-dot {
    0%, 100% { opacity: 1; transform: scale(1); box-shadow: 0 0 12px var(--accent-glow); }
    50% { opacity: 0.6; transform: scale(0.7); box-shadow: 0 0 4px var(--accent-glow); }
}

.hero__tag-text {
    font-family: var(--font-mono);
    font-size: 12px;
    font-weight: 500;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.hero__tag-sep {
    color: var(--text-muted);
    opacity: 0.4;
}

.hero__title {
    font-family: var(--font-display);
    font-size: clamp(28px, 3.5vw, 46px);
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.025em;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.hero__title--glow {
    background: linear-gradient(135deg, var(--accent) 0%, #FFB347 50%, var(--accent-hover) 100%);
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradient-shift 4s ease infinite;
}

@keyframes gradient-shift {
    0%, 100% { background-position: 0% center; }
    50% { background-position: 100% center; }
}

.hero__desc {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 32px;
    max-width: 440px;
}

.hero__cta-row {
    display: flex;
    align-items: center;
    gap: 24px;
    margin-bottom: 36px;
}

.hero__link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    transition: color 0.3s, gap 0.3s;
}

.hero__link:hover {
    color: var(--accent);
    gap: 10px;
}

/* Model chips */
.hero__chips {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 32px;
}

.hero__chip {
    padding: 6px 14px;
    background: var(--bg-glass);
    border: 1px solid var(--border);
    border-radius: 100px;
    font-family: var(--font-mono);
    font-size: 12px;
    font-weight: 500;
    color: var(--text-muted);
    transition: all 0.3s;
}

.hero__chip--active {
    background: var(--accent-soft);
    border-color: rgba(255,109,61,0.25);
    color: var(--accent);
}

.hero__chip:hover {
    border-color: var(--border-hover);
    color: var(--text-secondary);
}

/* Mini stats */
.hero__mini-stats {
    display: flex;
    align-items: center;
    gap: 20px;
}

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

.hero__mini-num {
    font-family: var(--font-display);
    font-size: 22px;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.hero__mini-label {
    font-size: 12px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.hero__mini-divider {
    width: 1px;
    height: 36px;
    background: var(--border);
}

/* ---- Hero Right (Vortex Animation) ---- */
.hero__right {
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.hero__vortex-wrap {
    width: 420px;
    height: 420px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Orbital rings */
.hero__orbit {
    position: absolute;
    border-radius: 50%;
    border: 1px solid rgba(255,109,61,0.08);
}

.hero__orbit--1 {
    width: 100%;
    height: 100%;
    animation: orbit-spin 20s linear infinite;
    border-color: rgba(255,109,61,0.1);
}

.hero__orbit--1::before {
    content: '';
    position: absolute;
    top: -4px;
    left: 50%;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 16px var(--accent-glow);
}

.hero__orbit--2 {
    width: 76%;
    height: 76%;
    animation: orbit-spin 14s linear infinite reverse;
    transform: rotate(60deg);
    border-color: rgba(140,80,255,0.08);
}

.hero__orbit--2::before {
    content: '';
    position: absolute;
    top: -3px;
    left: 50%;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #8C50FF;
    box-shadow: 0 0 12px rgba(140,80,255,0.5);
}

.hero__orbit--3 {
    width: 52%;
    height: 52%;
    animation: orbit-spin 10s linear infinite;
    transform: rotate(120deg);
    border-color: rgba(62,175,245,0.08);
}

.hero__orbit--3::before {
    content: '';
    position: absolute;
    top: -3px;
    left: 50%;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #3EAFF5;
    box-shadow: 0 0 12px rgba(62,175,245,0.5);
}

@keyframes orbit-spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Central sphere */
.hero__sphere {
    width: 120px;
    height: 120px;
    position: relative;
    z-index: 2;
}

.hero__sphere-inner {
    position: absolute;
    inset: 0;
    border-radius: 50%;
    background:
        radial-gradient(circle at 35% 35%, rgba(255,255,255,0.15), transparent 60%),
        radial-gradient(circle at 50% 50%, var(--accent) 0%, rgba(140,80,255,0.4) 50%, rgba(62,175,245,0.2) 100%);
    box-shadow:
        0 0 60px var(--accent-glow),
        0 0 120px rgba(255,109,61,0.15),
        inset 0 0 40px rgba(255,255,255,0.05);
    animation: sphere-pulse 4s ease-in-out infinite;
}

.hero__sphere-ring {
    position: absolute;
    inset: -20px;
    border-radius: 50%;
    border: 1px solid rgba(255,109,61,0.15);
    animation: sphere-ring-pulse 4s ease-in-out infinite 0.5s;
}

@keyframes sphere-pulse {
    0%, 100% { transform: scale(1); box-shadow: 0 0 60px var(--accent-glow), 0 0 120px rgba(255,109,61,0.15); }
    50% { transform: scale(1.06); box-shadow: 0 0 80px var(--accent-glow), 0 0 160px rgba(255,109,61,0.2); }
}

@keyframes sphere-ring-pulse {
    0%, 100% { transform: scale(1); opacity: 0.6; }
    50% { transform: scale(1.15); opacity: 0.2; }
}

/* Sphere particles */
.hero__sphere-particles {
    position: absolute;
    inset: -40px;
}

.hero__sphere-particles span {
    position: absolute;
    width: 3px;
    height: 3px;
    border-radius: 50%;
    background: var(--accent);
    opacity: 0.6;
}

.hero__sphere-particles span:nth-child(1) { top: 10%; left: 20%; animation: particle-float 3s ease-in-out infinite 0s; }
.hero__sphere-particles span:nth-child(2) { top: 5%; right: 30%; animation: particle-float 3.5s ease-in-out infinite 0.4s; }
.hero__sphere-particles span:nth-child(3) { top: 40%; right: 5%; animation: particle-float 2.8s ease-in-out infinite 0.8s; }
.hero__sphere-particles span:nth-child(4) { bottom: 15%; right: 20%; animation: particle-float 3.2s ease-in-out infinite 1.2s; }
.hero__sphere-particles span:nth-child(5) { bottom: 10%; left: 25%; animation: particle-float 3.7s ease-in-out infinite 0.6s; }
.hero__sphere-particles span:nth-child(6) { top: 30%; left: 5%; animation: particle-float 3s ease-in-out infinite 1s; }
.hero__sphere-particles span:nth-child(7) { bottom: 30%; left: 10%; animation: particle-float 2.5s ease-in-out infinite 0.2s; background: #8C50FF; }
.hero__sphere-particles span:nth-child(8) { top: 15%; right: 10%; animation: particle-float 3.4s ease-in-out infinite 1.4s; background: #3EAFF5; }

@keyframes particle-float {
    0%, 100% { transform: translate(0, 0); opacity: 0.6; }
    25% { transform: translate(6px, -10px); opacity: 0.3; }
    50% { transform: translate(-4px, -16px); opacity: 0.7; }
    75% { transform: translate(8px, -6px); opacity: 0.4; }
}

/* Floating notification cards */
.hero__float-card {
    position: absolute;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 16px;
    background: rgba(17,17,25,0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border);
    border-radius: 12px;
    z-index: 5;
    white-space: nowrap;
}

.hero__float-card-icon {
    font-size: 18px;
    line-height: 1;
}

.hero__float-card-text {
    display: flex;
    flex-direction: column;
    gap: 1px;
}

.hero__float-card-text span {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
}

.hero__float-card-text small {
    font-size: 11px;
    color: var(--text-muted);
    font-family: var(--font-mono);
}

.hero__float-card--1 {
    top: 12%;
    right: -8%;
    animation: float-card 6s ease-in-out infinite;
    border-color: rgba(82,196,26,0.2);
}

.hero__float-card--2 {
    bottom: 28%;
    left: -12%;
    animation: float-card 6s ease-in-out infinite 2s;
    border-color: rgba(255,109,61,0.15);
}

.hero__float-card--3 {
    bottom: 8%;
    right: 5%;
    animation: float-card 6s ease-in-out infinite 4s;
    border-color: rgba(140,80,255,0.15);
}

@keyframes float-card {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

/* ---- Scroll Indicator (editorial) ---- */
.hero__scroll {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 5;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.hero__scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(180deg, var(--accent), transparent);
    animation: scroll-line-pulse 2s ease-in-out infinite;
}

@keyframes scroll-line-pulse {
    0%, 100% { opacity: 1; transform: scaleY(1); }
    50% { opacity: 0.3; transform: scaleY(0.6); transform-origin: top; }
}

.hero__scroll-text {
    font-family: var(--font-mono);
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--text-muted);
}

/* ---- Hero Responsive ---- */
@media (max-width: 900px) {
    .hero__layout {
        grid-template-columns: 1fr;
        gap: 48px;
    }
    .hero__left {
        padding-right: 0;
        text-align: center;
    }
    .hero__desc {
        max-width: 100%;
        margin-left: auto;
        margin-right: auto;
    }
    .hero__cta-row {
        justify-content: center;
        flex-wrap: wrap;
    }
    .hero__chips {
        justify-content: center;
    }
    .hero__mini-stats {
        justify-content: center;
    }
    .hero__right {
        order: -1;
    }
    .hero__vortex-wrap {
        width: 300px;
        height: 300px;
    }
    .hero__float-card--1 { right: 0; }
    .hero__float-card--2 { left: 0; }
}

@media (max-width: 480px) {
    .hero {
        padding: 80px 0 60px;
    }
    .hero__title {
        font-size: 24px;
    }
    .hero__desc {
        font-size: 14px;
    }
    .hero__cta-row {
        flex-direction: column;
        gap: 12px;
    }
    .hero__cta-row .btn {
        width: 100%;
        justify-content: center;
    }
    .hero__chips {
        gap: 6px;
    }
    .hero__chip {
        padding: 5px 10px;
        font-size: 11px;
    }
    .hero__mini-stats {
        gap: 12px;
        flex-wrap: wrap;
    }
    .hero__mini-num {
        font-size: 18px;
    }
    .hero__mini-label {
        font-size: 10px;
    }
    .hero__mini-divider {
        height: 28px;
    }
    .hero__vortex-wrap {
        width: 240px;
        height: 240px;
    }
    .hero__sphere {
        width: 80px;
        height: 80px;
    }
    .hero__float-card {
        display: none;
    }
}

/* ==========================================
   BUTTONS
   ========================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-body);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s var(--ease-out);
    white-space: nowrap;
}

.btn--primary {
    padding: 14px 28px;
    background: var(--accent);
    color: #fff;
    border-radius: 100px;
    font-size: 15px;
    border: none;
}

.btn--primary:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 12px 32px var(--accent-glow);
}

.btn--ghost {
    padding: 14px 24px;
    background: var(--bg-glass);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    border-radius: 100px;
    font-size: 15px;
    backdrop-filter: blur(10px);
}

.btn--ghost:hover {
    border-color: var(--border-hover);
    color: var(--text-primary);
    background: var(--bg-glass-hover);
}

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

.btn--lg {
    padding: 18px 36px;
    font-size: 17px;
}

.btn--full {
    width: 100%;
    justify-content: center;
}

/* ==========================================
   MARQUEE
   ========================================== */
.marquee {
    padding: 24px 0;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    overflow: hidden;
    position: relative;
    background: var(--bg-secondary);
}

.marquee::before,
.marquee::after {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    width: 100px;
    z-index: 2;
    pointer-events: none;
}

.marquee::before {
    left: 0;
    background: linear-gradient(to right, var(--bg-secondary), transparent);
}

.marquee::after {
    right: 0;
    background: linear-gradient(to left, var(--bg-secondary), transparent);
}

.marquee__track {
    overflow: hidden;
}

.marquee__inner {
    display: flex;
    gap: 0;
    animation: marquee-scroll 30s linear infinite;
    width: max-content;
}

.marquee__item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 0 32px;
    font-family: var(--font-mono);
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    white-space: nowrap;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

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

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

/* ==========================================
   SECTIONS — General
   ========================================== */
.section {
    padding: var(--section-pad) 0;
    position: relative;
}

.section__head {
    text-align: center;
    margin-bottom: 64px;
}

.section__tag {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 12px;
    font-weight: 500;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.12em;
    margin-bottom: 16px;
}

.section__title {
    font-family: var(--font-display);
    font-size: clamp(28px, 4vw, 48px);
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -0.02em;
}

.section__title em {
    font-style: normal;
    background: linear-gradient(135deg, var(--accent), var(--accent-hover));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section__sub {
    font-size: 17px;
    color: var(--text-secondary);
    margin-top: 14px;
    max-width: 540px;
    margin-left: auto;
    margin-right: auto;
}

/* ==========================================
   PROBLEM SECTION
   ========================================== */
.section--problem {
    background: var(--bg-secondary);
}

.problem__grid {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 40px;
    align-items: stretch;
}

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

.problem__card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 28px;
    position: relative;
    overflow: hidden;
}

.problem__card--pain {
    border-color: rgba(255,77,79,0.15);
}

.problem__card--solution {
    border-color: rgba(255,109,61,0.2);
    height: 100%;
}

.problem__card-glow {
    position: absolute;
    inset: -1px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, rgba(255,109,61,0.15), transparent 60%);
    z-index: 0;
    pointer-events: none;
}

.problem__card--solution > *:not(.problem__card-glow) {
    position: relative;
    z-index: 1;
}

.problem__icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
}

.problem__icon--red {
    background: rgba(255,77,79,0.1);
    color: var(--red);
}

.problem__icon--green {
    background: var(--accent-soft);
    color: var(--accent);
}

.problem__card h3 {
    font-family: var(--font-display);
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 10px;
}

.problem__card p {
    color: var(--text-secondary);
    font-size: 15px;
    line-height: 1.6;
}

.problem__price-tag {
    margin-top: 16px;
    display: flex;
    align-items: baseline;
    gap: 8px;
}

.problem__price-strike {
    font-family: var(--font-mono);
    font-size: 22px;
    font-weight: 700;
    color: var(--red);
    text-decoration: line-through;
}

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

.problem__sites {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 16px;
}

.problem__sites span {
    padding: 4px 12px;
    background: rgba(255,255,255,0.04);
    border: 1px solid var(--border);
    border-radius: 6px;
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--text-muted);
}

.problem__vs {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    padding: 0 8px;
}

.problem__vs-line {
    width: 2px;
    flex: 1;
    background: linear-gradient(180deg, transparent, var(--border-hover), transparent);
}

.problem__vs-badge {
    font-family: var(--font-display);
    font-weight: 800;
    font-size: 16px;
    color: var(--accent);
    background: var(--bg-primary);
    border: 2px solid var(--accent);
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.problem__solution-features {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 20px;
}

.problem__sf {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: var(--text-secondary);
}

@media (max-width: 900px) {
    .problem__grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    .problem__vs {
        flex-direction: row;
        padding: 8px 0;
    }
    .problem__vs-line {
        width: auto;
        height: 2px;
        flex: 1;
    }
}

/* ==========================================
   HOW IT WORKS
   ========================================== */
.steps {
    max-width: 640px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 0;
}

.step {
    display: flex;
    gap: 28px;
}

.step__number {
    display: flex;
    flex-direction: column;
    align-items: center;
    flex-shrink: 0;
}

.step__number span {
    font-family: var(--font-mono);
    font-size: 14px;
    font-weight: 700;
    color: var(--accent);
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: 2px solid rgba(255,109,61,0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-primary);
    flex-shrink: 0;
}

.step__line {
    width: 2px;
    flex: 1;
    background: linear-gradient(180deg, rgba(255,109,61,0.3), transparent);
    margin: 8px 0;
    min-height: 40px;
}

.step__body {
    padding-bottom: 48px;
}

.step:last-child .step__body {
    padding-bottom: 0;
}

.step__icon-wrap {
    width: 52px;
    height: 52px;
    border-radius: 14px;
    background: var(--accent-soft);
    border: 1px solid rgba(255,109,61,0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
    margin-bottom: 16px;
}

.step__body h3 {
    font-family: var(--font-display);
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 8px;
}

.step__body p {
    color: var(--text-secondary);
    font-size: 15px;
    line-height: 1.65;
}

/* ==========================================
   AI MODELS — Tabbed Carousel
   ========================================== */
.section--models {
    background: var(--bg-secondary);
}

.model-tabs {
    display: flex;
    gap: 8px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 48px;
}

.model-tab {
    padding: 10px 22px;
    font-family: var(--font-body);
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    background: var(--bg-glass);
    border: 1px solid var(--border);
    border-radius: 100px;
    cursor: pointer;
    transition: all 0.3s var(--ease-out);
}

.model-tab:hover {
    color: var(--text-primary);
    border-color: var(--border-hover);
}

.model-tab.active {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
}

/* Model panels */
.model-panel {
    display: none;
    grid-template-columns: 320px 1fr;
    gap: 56px;
    align-items: start;
    animation: panel-in 0.5s var(--ease-out);
}

.model-panel.active {
    display: grid;
}

@keyframes panel-in {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
}

.model-panel__info {
    position: sticky;
    top: 120px;
}

.model-panel__name {
    font-family: var(--font-display);
    font-size: clamp(32px, 4vw, 44px);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: 16px;
}

.model-panel__name span {
    color: var(--accent);
}

.model-panel__desc {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 20px;
}

.model-panel__tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 28px;
}

.model-panel__tags span {
    padding: 6px 14px;
    background: var(--accent-soft);
    border: 1px solid rgba(255,109,61,0.15);
    border-radius: 100px;
    font-size: 13px;
    font-weight: 500;
    color: var(--accent);
}

/* Model carousel cards */
.model-panel__carousel {
    display: flex;
    gap: 20px;
    overflow-x: auto;
    padding-bottom: 16px;
    padding-left: 8px;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
}

.model-panel__carousel::-webkit-scrollbar {
    height: 4px;
}

.model-panel__carousel::-webkit-scrollbar-track {
    background: var(--bg-card);
    border-radius: 4px;
}

.model-panel__carousel::-webkit-scrollbar-thumb {
    background: var(--accent-glow);
    border-radius: 4px;
}

.model-card {
    flex-shrink: 0;
    width: 280px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    scroll-snap-align: start;
    transition: transform 0.3s var(--ease-out), border-color 0.3s;
}

.model-card:hover {
    transform: translateY(-4px);
    border-color: var(--border-hover);
}

.model-card__img {
    width: 100%;
    height: 340px;
    overflow: hidden;
    position: relative;
}

.model-card__img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s var(--ease-out);
}

.model-card:hover .model-card__img img {
    transform: scale(1.05);
}

.model-card__prompt {
    padding: 16px;
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.5;
    border-top: 1px solid var(--border);
}

.model-card__prompt strong {
    color: var(--accent);
    font-weight: 600;
}

@media (max-width: 900px) {
    .model-panel {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    .model-panel__info {
        position: static;
    }
    .model-panel__name {
        font-size: 36px;
    }
}

/* ==========================================
   PRICING
   ========================================== */
.pricing__layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    align-items: start;
}

.pricing__card {
    position: relative;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: 40px;
    overflow: hidden;
}

.pricing__card-glow {
    position: absolute;
    top: -50%;
    left: -20%;
    width: 140%;
    height: 100%;
    background: radial-gradient(ellipse at center, rgba(255,109,61,0.08), transparent 70%);
    pointer-events: none;
}

.pricing__badge {
    display: inline-block;
    padding: 6px 16px;
    background: var(--accent-soft);
    border: 1px solid rgba(255,109,61,0.15);
    border-radius: 100px;
    font-family: var(--font-mono);
    font-size: 12px;
    font-weight: 500;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 24px;
    position: relative;
    z-index: 1;
}

.pricing__amount {
    display: flex;
    align-items: baseline;
    gap: 8px;
    margin-bottom: 12px;
    position: relative;
    z-index: 1;
}

.pricing__big {
    font-family: var(--font-display);
    font-size: 72px;
    font-weight: 800;
    line-height: 1;
    letter-spacing: -0.04em;
}

.pricing__meta {
    display: flex;
    flex-direction: column;
}

.pricing__currency {
    font-family: var(--font-display);
    font-size: 28px;
    font-weight: 700;
    color: var(--accent);
}

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

.pricing__min {
    font-size: 15px;
    color: var(--text-secondary);
    margin-bottom: 28px;
    position: relative;
    z-index: 1;
}

.pricing__features {
    display: flex;
    flex-direction: column;
    gap: 14px;
    margin-bottom: 32px;
    position: relative;
    z-index: 1;
}

.pricing__feat {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 15px;
    color: var(--text-secondary);
}

.pricing__feat svg {
    flex-shrink: 0;
}

.pricing__card .btn {
    position: relative;
    z-index: 1;
}

/* Pricing compare */
.pricing__compare {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: 40px;
}

.pricing__compare-title {
    font-family: var(--font-display);
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 28px;
}

.pricing__compare-item {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 20px 0;
    border-bottom: 1px solid var(--border);
}

.pricing__compare-item:last-of-type {
    border-bottom: none;
}

.pricing__old {
    flex: 1;
}

.pricing__old-label {
    display: block;
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.pricing__old-strike {
    font-family: var(--font-mono);
    font-size: 16px;
    color: var(--red);
    text-decoration: line-through;
}

.pricing__vs {
    font-family: var(--font-display);
    font-weight: 800;
    font-size: 14px;
    color: var(--text-muted);
    padding: 6px 12px;
    background: var(--bg-glass);
    border-radius: 8px;
    flex-shrink: 0;
}

.pricing__new {
    flex: 1;
    text-align: right;
}

.pricing__new-value {
    display: block;
    font-family: var(--font-display);
    font-size: 20px;
    font-weight: 700;
    color: var(--accent);
}

.pricing__new-note {
    font-size: 13px;
    color: var(--text-muted);
}

@media (max-width: 900px) {
    .pricing__layout {
        grid-template-columns: 1fr;
    }
}

/* ==========================================
   ADVANTAGES
   ========================================== */
.advantages__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.advantage {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: all 0.4s var(--ease-out);
    position: relative;
    overflow: hidden;
}

.advantage::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent), transparent);
    opacity: 0;
    transition: opacity 0.4s;
}

.advantage:hover {
    border-color: var(--border-hover);
    transform: translateY(-4px);
}

.advantage:hover::before {
    opacity: 1;
}

.advantage__icon {
    width: 52px;
    height: 52px;
    border-radius: 14px;
    background: var(--accent-soft);
    border: 1px solid rgba(255,109,61,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
    margin-bottom: 20px;
}

.advantage h3 {
    font-family: var(--font-display);
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 10px;
}

.advantage p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

@media (max-width: 1024px) {
    .advantages__grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 600px) {
    .advantages__grid { grid-template-columns: 1fr; }
}

/* ==========================================
   STATS / COUNTER
   ========================================== */
.section--stats {
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    background: var(--bg-secondary);
    padding: 64px 0;
}

.stats__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    text-align: center;
}

.stat__number {
    font-family: var(--font-display);
    font-size: clamp(36px, 5vw, 56px);
    font-weight: 800;
    letter-spacing: -0.03em;
    background: linear-gradient(135deg, var(--text-primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: block;
    margin-bottom: 8px;
}

.stat__label {
    font-size: 14px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

@media (max-width: 768px) {
    .stats__grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px 16px;
    }
    .stat__number {
        font-size: 36px;
    }
    .stat__label {
        font-size: 12px;
    }
}

@media (max-width: 480px) {
    .section--stats {
        padding: 48px 0;
    }
    .stats__grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px 12px;
    }
    .stat__number {
        font-size: 28px;
    }
    .stat__label {
        font-size: 11px;
        letter-spacing: 0.03em;
    }
}

/* ==========================================
   CTA
   ========================================== */
.section--cta {
    padding: 80px 0 100px;
}

.cta {
    position: relative;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: 80px 48px;
    text-align: center;
    overflow: hidden;
}

.cta__glow {
    position: absolute;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    pointer-events: none;
}

.cta__glow--1 {
    top: -200px;
    left: -100px;
    background: radial-gradient(circle, rgba(255,109,61,0.12), transparent 70%);
}

.cta__glow--2 {
    bottom: -200px;
    right: -100px;
    background: radial-gradient(circle, rgba(140,80,255,0.08), transparent 70%);
}

.cta__title {
    font-family: var(--font-display);
    font-size: clamp(28px, 4vw, 44px);
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 16px;
    position: relative;
    z-index: 1;
}

.cta__sub {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 36px;
    position: relative;
    z-index: 1;
}

.cta .btn {
    position: relative;
    z-index: 1;
}

/* ==========================================
   FOOTER
   ========================================== */
.footer {
    border-top: 1px solid var(--border);
    padding: 64px 0 40px;
    background: var(--bg-primary);
}

.footer__grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer__tagline {
    font-size: 14px;
    color: var(--text-muted);
    margin-top: 16px;
    line-height: 1.6;
}

.footer__col h4 {
    font-family: var(--font-display);
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.footer__col ul li {
    margin-bottom: 12px;
}

.footer__col ul li a {
    font-size: 14px;
    color: var(--text-muted);
    transition: color 0.3s;
}

.footer__col ul li a:hover {
    color: var(--accent);
}

.footer__legal li {
    display: flex;
    gap: 12px;
    margin-bottom: 10px;
}

.footer__lbl {
    font-size: 13px;
    color: var(--text-muted);
    min-width: 70px;
}

.footer__val {
    font-size: 13px;
    color: var(--text-secondary);
    font-family: var(--font-mono);
}

.footer__bottom {
    border-top: 1px solid var(--border);
    padding-top: 24px;
    text-align: center;
}

.footer__bottom p {
    font-size: 13px;
    color: var(--text-muted);
}

@media (max-width: 768px) {
    .footer__grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
}

/* ==========================================
   ANIMATIONS — Reveal on scroll
   ========================================== */
.reveal {
    opacity: 0;
    transform: translateY(28px);
    transition: all 0.7s var(--ease-out);
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

.anim-up {
    opacity: 0;
    transform: translateY(32px);
    transition: all 0.8s var(--ease-out);
}

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

/* Stagger delays */
.anim-up[data-delay="0"] { transition-delay: 0.1s; }
.anim-up[data-delay="1"] { transition-delay: 0.25s; }
.anim-up[data-delay="2"] { transition-delay: 0.4s; }
.anim-up[data-delay="3"] { transition-delay: 0.55s; }
.anim-up[data-delay="4"] { transition-delay: 0.7s; }
.anim-up[data-delay="5"] { transition-delay: 0.85s; }

/* ==========================================
   RESPONSIVE — Global overrides
   ========================================== */
@media (max-width: 480px) {
    .section {
        padding: clamp(48px, 8vw, 80px) 0;
    }
    .section__head {
        margin-bottom: 40px;
    }
    .section__title {
        font-size: 24px;
    }
    .section__sub {
        font-size: 15px;
    }
    .pricing__card {
        padding: 24px;
    }
    .pricing__big {
        font-size: 48px;
    }
    .pricing__compare-item {
        flex-direction: column;
        gap: 10px;
        text-align: center;
    }
    .pricing__old,
    .pricing__new {
        text-align: center;
    }
    .cta {
        padding: 40px 20px;
    }
    .cta__title {
        font-size: 24px;
    }
    .cta__sub {
        font-size: 15px;
    }
    .model-tabs {
        gap: 6px;
    }
    .model-tab {
        padding: 8px 14px;
        font-size: 12px;
    }
    .model-card {
        width: 240px;
    }
    .model-card__img {
        height: 280px;
    }
    .advantage {
        padding: 24px;
    }
    .footer__legal li {
        flex-direction: column;
        gap: 4px;
    }
    .footer__lbl {
        min-width: auto;
    }
    .footer__val {
        font-size: 12px;
        word-break: break-all;
    }
    .marquee__item {
        padding: 0 20px;
        font-size: 12px;
    }
}