/* ========================================================================== 
   AlgoTradersHub — stylesheet principal
   Estrutura: tokens, base, componentes, seções, utilitários e responsividade.
   ========================================================================== */

/* 1. Design tokens --------------------------------------------------------- */
:root {
    --color-primary: #fe5900;
    --color-primary-strong: #e74d00;
    --color-primary-soft: #ff7a2a;
    --color-success: #22c55e;
    --color-danger: #ef4444;

    --color-bg: #07080c;
    --color-bg-alt: #0b0c12;
    --color-surface: #11121a;
    --color-surface-raised: #151720;
    --color-surface-soft: #0e1017;
    --color-text: #f7f7f8;
    --color-text-soft: #b6b7c2;
    --color-text-muted: #81838f;
    --color-border: rgba(255, 255, 255, 0.09);
    --color-border-strong: rgba(255, 255, 255, 0.14);

    --gradient-primary: linear-gradient(135deg, #fe5900 0%, #ff7b2f 100%);
    --gradient-text: linear-gradient(90deg, #ff8c42 0%, #fe5900 100%);
    --gradient-card: linear-gradient(145deg, rgba(255, 255, 255, 0.035), rgba(255, 255, 255, 0.008));

    --shadow-sm: 0 10px 30px rgba(0, 0, 0, 0.22);
    --shadow-md: 0 20px 60px rgba(0, 0, 0, 0.32);
    --shadow-lg: 0 34px 100px rgba(0, 0, 0, 0.42);
    --shadow-primary: 0 14px 36px rgba(254, 89, 0, 0.25);

    --radius-sm: 10px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 30px;
    --radius-pill: 999px;

    --container-width: 1280px;
    --container-padding: 32px;
    --section-space: clamp(78px, 7vw, 104px);
    --transition-fast: 160ms ease;
    --transition: 260ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

/* 2. Reset and document base ---------------------------------------------- */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    width: 100%;
    scroll-behavior: smooth;
    scroll-padding-top: 88px;
    overflow-x: hidden;
}

body {
    width: 100%;
    min-width: 320px;
    overflow-x: hidden;
    background: var(--color-bg);
    color: var(--color-text);
    font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 16px;
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

body.menu-open,
body.lightbox-open {
    overflow: hidden;
}

img,
picture,
video,
svg {
    display: block;
    max-width: 100%;
}

button,
a,
input,
textarea,
select {
    font: inherit;
}

button {
    border: 0;
}

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

ul,
ol {
    list-style: none;
}

::selection {
    background: rgba(254, 89, 0, 0.36);
    color: #fff;
}

:focus-visible {
    outline: 3px solid rgba(255, 123, 47, 0.82);
    outline-offset: 4px;
}

.container {
    width: min(100% - (var(--container-padding) * 2), var(--container-width));
    margin-inline: auto;
}

section {
    position: relative;
    padding-block: var(--section-space);
}

.skip-link {
    position: fixed;
    top: 12px;
    left: 12px;
    z-index: 3000;
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    background: #fff;
    color: #111;
    font-weight: 700;
    transform: translateY(-160%);
    transition: transform var(--transition-fast);
}

.skip-link:focus {
    transform: translateY(0);
}

.scroll-progress {
    position: fixed;
    inset: 0 auto auto 0;
    z-index: 2500;
    width: 0;
    height: 3px;
    background: var(--gradient-primary);
    box-shadow: 0 0 16px rgba(254, 89, 0, 0.46);
}

.section-divider {
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(254, 89, 0, 0.24), transparent);
}

/* 3. Shared typography ----------------------------------------------------- */
.text-gradient {
    background: var(--gradient-text);
    background-clip: text;
    color: transparent;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.section-header {
    width: min(100%, 860px);
    margin: 0 auto 54px;
    text-align: center;
}

.section-tag,
.hero-badge,
.expert-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    min-height: 34px;
    padding: 7px 14px;
    border: 1px solid rgba(254, 89, 0, 0.30);
    border-radius: var(--radius-pill);
    background: rgba(254, 89, 0, 0.09);
    color: #ff7b2f;
    font-size: 0.78rem;
    font-weight: 750;
    letter-spacing: 0.065em;
    line-height: 1;
    text-transform: uppercase;
}

.section-tag {
    margin-bottom: 17px;
}

.section-title {
    max-width: 900px;
    margin-inline: auto;
    color: var(--color-text);
    font-size: clamp(2.35rem, 3.7vw, 3.45rem);
    font-weight: 850;
    letter-spacing: -0.052em;
    line-height: 1.06;
    text-wrap: balance;
}

.section-header .section-title::after {
    content: "";
    display: block;
    width: 64px;
    height: 3px;
    margin: 22px auto 0;
    border-radius: var(--radius-pill);
    background: var(--gradient-primary);
}

.section-subtitle {
    max-width: 690px;
    margin: 22px auto 0;
    color: var(--color-text-soft);
    font-size: clamp(1rem, 1.3vw, 1.12rem);
    line-height: 1.7;
    text-wrap: balance;
}

/* 4. Buttons --------------------------------------------------------------- */
.btn {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 9px;
    min-height: 50px;
    padding: 13px 25px;
    overflow: hidden;
    border: 1px solid transparent;
    border-radius: 13px;
    cursor: pointer;
    font-size: 0.96rem;
    font-weight: 750;
    line-height: 1.2;
    text-align: center;
    transition: transform var(--transition), border-color var(--transition), background var(--transition), box-shadow var(--transition);
}

.btn-primary {
    background: var(--gradient-primary);
    color: #fff;
    box-shadow: var(--shadow-primary);
}

.btn-primary::after {
    content: "";
    position: absolute;
    top: -70%;
    left: -55%;
    width: 34%;
    height: 240%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transform: rotate(24deg);
    transition: left 650ms ease;
}

.btn-primary:hover::after {
    left: 125%;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 18px 42px rgba(254, 89, 0, 0.32);
}

.btn-secondary {
    border-color: var(--color-border-strong);
    background: rgba(255, 255, 255, 0.035);
    color: var(--color-text);
}

.btn-secondary:hover {
    border-color: rgba(254, 89, 0, 0.58);
    background: rgba(254, 89, 0, 0.07);
    transform: translateY(-2px);
}

.btn-lg {
    min-height: 56px;
    padding: 16px 31px;
    font-size: 1.02rem;
}

.btn-block {
    width: 100%;
}

/* 5. Navbar ---------------------------------------------------------------- */
.navbar {
    position: fixed;
    inset: 0 0 auto;
    z-index: 2000;
    height: 76px;
    border-bottom: 1px solid transparent;
    background: rgba(7, 8, 12, 0.42);
    backdrop-filter: blur(10px);
    transition: height var(--transition), background var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.navbar.scrolled {
    height: 68px;
    border-color: var(--color-border);
    background: rgba(7, 8, 12, 0.92);
    box-shadow: 0 14px 40px rgba(0, 0, 0, 0.22);
    backdrop-filter: blur(20px);
}

.navbar .container {
    display: grid;
    grid-template-columns: minmax(190px, 1fr) auto minmax(190px, 1fr);
    align-items: center;
    height: 100%;
}

.brand {
    display: inline-flex;
    align-items: center;
    justify-self: start;
    line-height: 0;
}

.brand-logo {
    display: block;
    width: 142px;
    height: auto;
    object-fit: contain;
    transition: width var(--transition), opacity var(--transition), transform var(--transition);
}

.brand:hover .brand-logo {
    opacity: 0.92;
    transform: translateY(-1px);
}

.navbar.scrolled .brand-logo {
    width: 126px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 28px;
    justify-self: center;
}

.nav-links a {
    position: relative;
    padding-block: 10px;
    color: #a9aab4;
    font-size: 0.88rem;
    font-weight: 650;
    white-space: nowrap;
}

.nav-links a::after {
    content: "";
    position: absolute;
    right: 0;
    bottom: 4px;
    left: 0;
    height: 2px;
    border-radius: var(--radius-pill);
    background: var(--color-primary);
    transform: scaleX(0);
    transition: transform var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
    color: #fff;
}

.nav-links a:hover::after,
.nav-links a.active::after {
    transform: scaleX(1);
}

.nav-cta {
    min-height: 44px;
    padding: 11px 21px;
    justify-self: end;
}

.mobile-menu-btn {
    display: none;
    width: 44px;
    height: 44px;
    padding: 10px;
    border: 1px solid var(--color-border);
    border-radius: 12px;
    background: var(--color-surface);
    cursor: pointer;
}

.mobile-menu-btn span {
    display: block;
    width: 22px;
    height: 2px;
    margin: 5px auto;
    border-radius: 99px;
    background: #fff;
    transition: transform var(--transition), opacity var(--transition);
}

.mobile-menu-btn.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* 6. Hero ------------------------------------------------------------------ */
.hero {
    min-height: 100vh;
    padding-top: 126px;
    padding-bottom: 82px;
    overflow: hidden;
    background: var(--color-bg);
}

.hero-bg,
.hero-gradient,
.hero-grid {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.hero-gradient {
    background:
        radial-gradient(circle at 50% 6%, rgba(254, 89, 0, 0.14), transparent 36%),
        radial-gradient(circle at 14% 45%, rgba(254, 89, 0, 0.055), transparent 28%),
        radial-gradient(circle at 86% 52%, rgba(254, 89, 0, 0.045), transparent 24%);
}

.hero-grid {
    opacity: 0.17;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
    background-size: 54px 54px;
    mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.75), transparent 80%);
}

.hero-content-centered {
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-copy-centered {
    display: flex;
    width: min(100%, 1120px);
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.hero-badge {
    margin-bottom: 22px;
    text-transform: none;
    letter-spacing: 0.015em;
    font-size: 0.88rem;
}

.badge-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--color-primary);
    box-shadow: 0 0 0 6px rgba(254, 89, 0, 0.10);
}

.hero-title {
    width: 100%;
    color: #fff;
    font-size: clamp(3rem, 4.5vw, 4rem);
    font-weight: 900;
    letter-spacing: -0.067em;
    line-height: 0.99;
    text-align: center;
    text-wrap: balance;
}

.hero-title-line {
    display: block;
}

.hero-title-accent {
    color: #ff6200;
}

.hero-subtitle {
    max-width: 760px;
    margin-top: 26px;
    color: rgba(255, 255, 255, 0.9);
    font-size: clamp(1.18rem, 1.8vw, 1.42rem);
    font-weight: 500;
    line-height: 1.52;
    text-wrap: balance;
}

.hero-support {
    max-width: 880px;
    margin-top: 16px;
    color: var(--color-text-muted);
    font-size: clamp(0.98rem, 1.2vw, 1.08rem);
    line-height: 1.72;
    text-wrap: balance;
}

.hero-media-centered {
    width: min(100%, 1100px);
    margin-top: 62px;
}

.hero-video {
    width: 100%;
}

.video-container {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    border: 1px solid rgba(254, 89, 0, 0.43);
    border-radius: 22px;
    background: #0f1017;
    box-shadow: 0 28px 90px rgba(0, 0, 0, 0.50), 0 0 60px rgba(254, 89, 0, 0.06);
}

.video-container::after {
    content: "";
    position: absolute;
    inset: 0;
    z-index: 4;
    border-radius: inherit;
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.035);
    pointer-events: none;
}

.video-container iframe,
.video-container video,
.video-thumbnail,
.video-backdrop {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
}

.video-thumbnail {
    object-fit: cover;
}

.video-backdrop {
    z-index: 2;
    background: linear-gradient(180deg, transparent, rgba(7, 8, 12, 0.18));
    pointer-events: none;
}

.hero-media-label {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 16px;
    color: var(--color-text-muted);
    font-size: 0.82rem;
}

.hero-media-label::before {
    content: "";
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--color-primary);
}

.hero-cta-after-video {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 14px;
    margin-top: 32px;
}

.hero-cta-after-video .btn {
    min-width: 230px;
}

.hero-facts {
    display: grid;
    width: min(100%, 720px);
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-top: 32px;
}

.hero-fact {
    display: flex;
    min-height: 72px;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 13px 14px;
    border: 1px solid var(--color-border);
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.025);
    text-align: center;
}

.hero-fact strong {
    color: #fff;
    font-size: 1.35rem;
    font-weight: 850;
    line-height: 1;
}

.hero-fact span {
    margin-top: 6px;
    color: var(--color-text-muted);
    font-size: 0.76rem;
}

/* 7. Curriculum strip ------------------------------------------------------ */
.curriculum-strip {
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.018), rgba(255, 255, 255, 0.008));
}

.curriculum-strip-inner {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    padding-inline: 0;
}

.curriculum-chip {
    display: flex;
    min-width: 0;
    min-height: 76px;
    align-items: center;
    gap: 11px;
    padding: 16px 20px;
    border-right: 1px solid var(--color-border);
    color: var(--color-text-soft);
    font-size: 0.9rem;
    font-weight: 600;
    line-height: 1.4;
}

.curriculum-chip:last-child {
    border-right: 0;
}

.curriculum-chip > span:first-child {
    display: grid;
    width: 25px;
    height: 25px;
    flex: 0 0 25px;
    place-items: center;
    border: 1px solid rgba(254, 89, 0, 0.24);
    border-radius: 50%;
    background: rgba(254, 89, 0, 0.09);
    color: var(--color-primary-soft);
    font-size: 0.78rem;
    font-weight: 850;
}

/* 8. Problem --------------------------------------------------------------- */
.problem-section {
    background: var(--color-bg);
}

.problem-content {
    display: grid;
    grid-template-columns: minmax(0, 0.94fr) minmax(0, 1.06fr);
    align-items: center;
    gap: clamp(42px, 6vw, 78px);
}

.problem-image,
.problem-illustration {
    min-width: 0;
}

.problem-illustration {
    overflow: hidden;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    background: #090a0f;
    box-shadow: var(--shadow-md);
}

.problem-gif {
    width: 100%;
    height: auto;
    object-fit: contain;
}

.problem-highlight {
    margin-bottom: 20px;
    color: #fff;
    font-size: clamp(1.35rem, 2.2vw, 1.72rem);
    font-weight: 750;
    letter-spacing: -0.025em;
    line-height: 1.4;
}

.problem-text > p:not(.problem-highlight) {
    margin-top: 14px;
    color: var(--color-text-soft);
    font-size: 1rem;
}

.problem-features {
    display: grid;
    gap: 11px;
    margin-top: 26px;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 12px;
    min-height: 48px;
    padding: 11px 14px;
    border: 1px solid var(--color-border);
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.025);
    color: #d8d9df;
    font-size: 0.92rem;
}

.feature-item svg {
    flex: 0 0 auto;
    color: var(--color-primary);
}

/* 8. Benefits -------------------------------------------------------------- */
.benefits-section {
    background: var(--color-bg-alt);
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
}

.benefit-card,
.about-card,
.module-card,
.bonus-card,
.pricing-card,
.method-step {
    position: relative;
    overflow: hidden;
    border: 1px solid var(--color-border);
    background: var(--gradient-card), var(--color-surface);
    box-shadow: var(--shadow-sm);
}

.benefit-card::before,
.about-card::before,
.module-card::before,
.bonus-card::before,
.pricing-card::before,
.method-step::before {
    content: "";
    position: absolute;
    width: 260px;
    height: 260px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(254, 89, 0, 0.12), transparent 68%);
    transform: translate(calc(var(--mx, 50%) - 50%), calc(var(--my, 50%) - 50%));
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition);
}

.benefit-card:hover::before,
.about-card:hover::before,
.module-card:hover::before,
.bonus-card:hover::before,
.pricing-card:hover::before,
.method-step:hover::before {
    opacity: 1;
}

.benefit-card {
    display: flex;
    min-height: 310px;
    flex-direction: column;
    padding: 28px 25px 24px;
    border-radius: var(--radius-md);
    transition: transform var(--transition), border-color var(--transition), background var(--transition);
}

.benefit-card:hover {
    border-color: rgba(254, 89, 0, 0.32);
    transform: translateY(-5px);
}

.benefit-card.featured {
    padding-top: 64px;
    border-color: rgba(254, 89, 0, 0.42);
    background: linear-gradient(160deg, rgba(254, 89, 0, 0.10), rgba(255, 255, 255, 0.02)), var(--color-surface);
}

.benefit-badge,
.bonus-badge {
    position: absolute;
    top: 15px;
    right: 16px;
    z-index: 2;
    padding: 5px 11px;
    border-radius: var(--radius-pill);
    background: var(--gradient-primary);
    color: #fff;
    font-size: 0.66rem;
    font-weight: 800;
    letter-spacing: 0.04em;
    line-height: 1.2;
    text-transform: uppercase;
}

.benefit-icon {
    display: grid;
    width: 48px;
    height: 48px;
    place-items: center;
    margin-bottom: 21px;
    border: 1px solid rgba(254, 89, 0, 0.25);
    border-radius: 13px;
    background: rgba(254, 89, 0, 0.08);
    color: var(--color-primary);
}

.benefit-card h3 {
    margin-bottom: 12px;
    font-size: 1.2rem;
    font-weight: 780;
    letter-spacing: -0.025em;
    line-height: 1.28;
}

.benefit-card p {
    color: var(--color-text-soft);
    font-size: 0.92rem;
    line-height: 1.68;
}

.benefit-check {
    display: flex;
    align-items: center;
    gap: 9px;
    margin-top: auto;
    padding-top: 22px;
    color: #ff7b2f;
    font-size: 0.78rem;
    font-weight: 700;
}

.benefit-check svg {
    flex: 0 0 auto;
}

/* 9. About ----------------------------------------------------------------- */
.about-section {
    background: var(--color-bg);
}

.about-content {
    display: grid;
    grid-template-columns: minmax(0, 1.04fr) minmax(0, 0.96fr);
    align-items: center;
    gap: clamp(44px, 7vw, 90px);
}

.about-text > .section-title {
    margin: 0;
    max-width: 650px;
    font-size: clamp(2.25rem, 3.6vw, 3.35rem);
    text-align: left;
}

.about-description {
    display: grid;
    gap: 10px;
    margin-top: 27px;
}

.about-word {
    display: grid;
    grid-template-columns: 80px 1fr;
    align-items: center;
    gap: 14px;
    padding: 13px 16px;
    border: 1px solid var(--color-border);
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.025);
    color: var(--color-text-soft);
    font-size: 0.9rem;
}

.about-word strong {
    color: #ff7424;
    font-weight: 850;
}

.about-text > p {
    margin-top: 24px;
    color: var(--color-text-soft);
    font-size: 0.98rem;
}

.about-visual {
    display: grid;
    gap: 14px;
}

.about-card {
    display: grid;
    grid-template-columns: 48px 1fr;
    gap: 4px 16px;
    padding: 21px 22px;
    border-radius: var(--radius-md);
    transition: transform var(--transition), border-color var(--transition);
}

.about-card:hover {
    border-color: rgba(254, 89, 0, 0.28);
    transform: translateX(5px);
}

.about-icon {
    grid-row: 1 / 3;
    display: grid;
    width: 48px;
    height: 48px;
    place-items: center;
    border-radius: 13px;
    background: rgba(254, 89, 0, 0.09);
    font-size: 1.35rem;
}

.about-card h4 {
    align-self: end;
    font-size: 1.08rem;
    font-weight: 760;
}

.about-card p {
    color: var(--color-text-soft);
    font-size: 0.88rem;
    line-height: 1.58;
}

/* 10. Method --------------------------------------------------------------- */
.method-section {
    background: var(--color-bg-alt);
}

.method-steps-image {
    width: min(100%, 1040px);
    margin: -8px auto 42px;
}

.steps-image-desktop {
    width: 100%;
}

.steps-image-mobile {
    display: none;
}

.method-timeline {
    position: relative;
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 14px;
}

.timeline-line {
    position: absolute;
    top: 33px;
    right: 7%;
    left: 7%;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(254, 89, 0, 0.55), transparent);
}

.method-step {
    z-index: 1;
    min-height: 255px;
    padding: 21px 19px 20px;
    border-radius: var(--radius-md);
    transition: transform var(--transition), border-color var(--transition);
}

.method-step:hover {
    border-color: rgba(254, 89, 0, 0.32);
    transform: translateY(-4px);
}

.step-number {
    display: grid;
    width: 48px;
    height: 48px;
    place-items: center;
    margin-bottom: 21px;
    border: 1px solid rgba(254, 89, 0, 0.42);
    border-radius: 14px;
    background: #17110f;
    color: #ff7424;
    font-size: 0.9rem;
    font-weight: 850;
    box-shadow: 0 10px 24px rgba(254, 89, 0, 0.10);
}

.step-content h3 {
    margin-bottom: 10px;
    font-size: 1.08rem;
    font-weight: 770;
    line-height: 1.28;
}

.step-content p {
    color: var(--color-text-soft);
    font-size: 0.84rem;
    line-height: 1.62;
}

/* 11. Modules and bonuses -------------------------------------------------- */
.modules-section {
    background: var(--color-bg);
}

.modules-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
}

.module-card {
    min-height: 250px;
    padding: 25px 24px 23px;
    border-radius: var(--radius-md);
    transition: transform var(--transition), border-color var(--transition);
}

.module-card:hover {
    border-color: rgba(254, 89, 0, 0.30);
    transform: translateY(-4px);
}

.module-number {
    margin-bottom: 17px;
    color: #ff6410;
    font-size: 1.55rem;
    font-weight: 900;
    letter-spacing: -0.04em;
    line-height: 1;
}

.module-card h3 {
    margin-bottom: 12px;
    font-size: 1.12rem;
    font-weight: 780;
    letter-spacing: -0.02em;
    line-height: 1.3;
}

.module-card p {
    color: var(--color-text-soft);
    font-size: 0.86rem;
    line-height: 1.65;
}

.bonuses-section {
    padding-top: 86px;
}

.bonuses-title {
    margin-bottom: 40px;
    text-align: center;
    font-size: clamp(2rem, 3vw, 2.7rem);
    font-weight: 850;
    letter-spacing: -0.045em;
    line-height: 1.08;
}

.bonuses-title::after {
    content: "";
    display: block;
    width: 56px;
    height: 3px;
    margin: 19px auto 0;
    border-radius: var(--radius-pill);
    background: var(--gradient-primary);
}

.bonuses-grid {
    display: grid;
    width: min(100%, 1080px);
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
    margin-inline: auto;
}

.bonus-card {
    min-height: 248px;
    padding: 30px 27px 25px;
    border-radius: var(--radius-md);
    transition: transform var(--transition), border-color var(--transition);
}

.bonus-card:hover {
    border-color: rgba(254, 89, 0, 0.32);
    transform: translateY(-4px);
}

.bonus-card.bonus-premium {
    border-color: rgba(254, 89, 0, 0.25);
}

.bonus-value {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: 10px;
    margin-bottom: 18px;
}

.bonus-from {
    color: var(--color-text-muted);
    font-size: 0.82rem;
    text-decoration: line-through;
}

.bonus-for {
    color: #ff7020;
    font-size: 1.22rem;
    font-weight: 850;
}

.bonus-card h4 {
    max-width: 420px;
    margin-bottom: 12px;
    font-size: 1.14rem;
    font-weight: 780;
    line-height: 1.3;
}

.bonus-card p {
    color: var(--color-text-soft);
    font-size: 0.86rem;
    line-height: 1.65;
}

.bonuses-total {
    width: min(100%, 1080px);
    margin: 20px auto 0;
    padding: 17px 22px;
    border: 1px solid rgba(254, 89, 0, 0.38);
    border-radius: 14px;
    background: linear-gradient(90deg, rgba(254, 89, 0, 0.10), rgba(254, 89, 0, 0.025));
    color: #fff;
    font-size: 0.92rem;
    font-weight: 780;
    text-align: center;
}

/* 12. Testimonials --------------------------------------------------------- */
.testimonials-section {
    background: var(--color-bg-alt);
}

.testimonials-videos {
    display: grid;
    width: min(100%, 980px);
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
    margin-inline: auto;
}

.testimonial-video-card {
    overflow: hidden;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    background: var(--color-surface);
    box-shadow: var(--shadow-md);
}

.testimonial-video-shell {
    position: relative;
    aspect-ratio: 1;
    overflow: hidden;
    background: radial-gradient(circle at 25% 20%, rgba(254, 89, 0, 0.18), transparent 36%), #090a0f;
}

.testimonial-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.testimonial-video-cover {
    position: absolute;
    inset: 0;
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 24px;
    background: radial-gradient(circle at center, rgba(254, 89, 0, 0.17), rgba(7, 8, 12, 0.75) 60%), rgba(7, 8, 12, 0.72);
    color: #fff;
    cursor: pointer;
    transition: opacity var(--transition), visibility var(--transition);
}

.testimonial-video-cover.is-hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.testimonial-video-cover-icon {
    display: grid;
    width: 72px;
    height: 72px;
    place-items: center;
    margin-bottom: 8px;
    border-radius: 50%;
    background: var(--gradient-primary);
    box-shadow: 0 18px 50px rgba(254, 89, 0, 0.36);
    font-size: 1.35rem;
    text-indent: 4px;
    transition: transform var(--transition);
}

.testimonial-video-cover:hover .testimonial-video-cover-icon {
    transform: scale(1.07);
}

.testimonial-video-cover strong {
    font-size: 1.02rem;
}

.testimonial-video-cover > span:last-child {
    color: var(--color-text-soft);
    font-size: 0.82rem;
}

.video-caption {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    padding: 15px 17px;
    border-top: 1px solid var(--color-border);
}

.video-caption p {
    color: var(--color-text-soft);
    font-size: 0.84rem;
}

.video-badge {
    flex: 0 0 auto;
    padding: 4px 9px;
    border-radius: var(--radius-pill);
    background: rgba(254, 89, 0, 0.11);
    color: #ff7424;
    font-size: 0.66rem;
    font-weight: 800;
    text-transform: uppercase;
}

.results-carousel-manual {
    --carousel-per-view: 3;
    width: min(100%, 1120px);
    margin: 52px auto 0;
}

.results-carousel-shell {
    display: grid;
    grid-template-columns: 44px minmax(0, 1fr) 44px;
    align-items: center;
    gap: 14px;
}

.results-carousel-viewport {
    min-width: 0;
    overflow: hidden;
    border-radius: var(--radius-md);
}

.results-carousel-track {
    display: flex;
    gap: 14px;
    transition: transform 420ms cubic-bezier(0.2, 0.8, 0.2, 1);
    will-change: transform;
}

.result-card {
    flex: 0 0 calc((100% - (14px * (var(--carousel-per-view) - 1))) / var(--carousel-per-view));
    min-width: 0;
}

.result-open {
    width: 100%;
    aspect-ratio: 4 / 5;
    overflow: hidden;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-surface);
    cursor: zoom-in;
    box-shadow: var(--shadow-sm);
}

.result-open img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 500ms ease;
}

.result-open:hover img {
    transform: scale(1.035);
}

.results-carousel-arrow {
    display: grid;
    width: 44px;
    height: 44px;
    place-items: center;
    border: 1px solid var(--color-border-strong);
    border-radius: 50%;
    background: var(--color-surface);
    color: #fff;
    cursor: pointer;
    transition: background var(--transition), border-color var(--transition), transform var(--transition), opacity var(--transition);
}

.results-carousel-arrow:hover:not(:disabled) {
    border-color: rgba(254, 89, 0, 0.48);
    background: rgba(254, 89, 0, 0.10);
    transform: scale(1.05);
}

.results-carousel-arrow:disabled {
    opacity: 0.28;
    cursor: not-allowed;
}

.results-carousel-footer {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    margin-top: 22px;
}

.results-carousel-dots {
    display: flex;
    gap: 8px;
}

.results-carousel-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.20);
    cursor: pointer;
    transition: width var(--transition), border-radius var(--transition), background var(--transition);
}

.results-carousel-dot[aria-current="true"] {
    width: 24px;
    border-radius: var(--radius-pill);
    background: var(--color-primary);
}

.results-carousel-help {
    color: var(--color-text-muted);
    font-size: 0.78rem;
    text-align: center;
}

/* 13. Expert --------------------------------------------------------------- */
.expert-section {
    background: var(--color-bg);
}

.expert-card {
    display: grid;
    width: min(100%, 1160px);
    min-height: 520px;
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
    margin-inline: auto;
    overflow: hidden;
    border: 1px solid var(--color-border-strong);
    border-radius: var(--radius-xl);
    background: var(--color-surface);
    box-shadow: var(--shadow-lg);
}

.expert-visual {
    position: relative;
    isolation: isolate;
    display: flex;
    min-height: 520px;
    flex-direction: column;
    justify-content: flex-end;
    padding: clamp(32px, 4vw, 50px);
    overflow: hidden;
    background: #0a0b10;
}

.expert-photo {
    position: absolute;
    inset: 0;
    z-index: -3;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 18%;
    filter: saturate(0.95) contrast(1.04);
}

.expert-visual::before {
    content: "";
    position: absolute;
    inset: 0;
    z-index: -2;
    opacity: 0.22;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
    background-size: 44px 44px;
}

.expert-visual::after {
    content: "";
    position: absolute;
    inset: 0;
    z-index: -1;
    background:
        linear-gradient(180deg, rgba(7, 8, 12, 0.02) 22%, rgba(7, 8, 12, 0.30) 58%, rgba(7, 8, 12, 0.96) 100%),
        linear-gradient(90deg, rgba(7, 8, 12, 0.14), transparent 60%);
}

.expert-visual-pattern {
    position: absolute;
    right: -12%;
    bottom: -18%;
    z-index: 0;
    width: 76%;
    aspect-ratio: 1;
    border: 1px solid rgba(254, 89, 0, 0.18);
    border-radius: 50%;
    box-shadow: 0 0 0 38px rgba(254, 89, 0, 0.035), 0 0 0 82px rgba(254, 89, 0, 0.018);
}

.expert-monogram {
    position: absolute;
    top: 42px;
    left: 42px;
    z-index: 0;
    color: rgba(255, 255, 255, 0.08);
    font-size: clamp(5rem, 9vw, 8rem);
    font-weight: 900;
    letter-spacing: -0.09em;
    line-height: 0.8;
    user-select: none;
}

.expert-identity {
    position: relative;
    z-index: 1;
    display: flex;
    max-width: 410px;
    flex-direction: column;
    gap: 5px;
    text-shadow: 0 3px 20px rgba(0, 0, 0, 0.72);
}

.expert-name {
    color: #fff;
    font-size: clamp(2.05rem, 3vw, 2.9rem);
    font-weight: 850;
    letter-spacing: -0.045em;
    line-height: 1;
}

.expert-role {
    color: rgba(255, 255, 255, 0.66);
    font-size: 0.9rem;
}

.expert-copy {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: clamp(42px, 5vw, 68px);
    background: linear-gradient(135deg, #ff7d2f 0%, #fe5900 54%, #df4500 100%);
    color: #fff;
}

.expert-eyebrow {
    align-self: flex-start;
    margin-bottom: 20px;
    border-color: rgba(255, 255, 255, 0.32);
    background: rgba(0, 0, 0, 0.10);
    color: #fff;
}

.expert-copy h2 {
    margin-bottom: 20px;
    font-size: clamp(2.25rem, 3.7vw, 3.25rem);
    font-weight: 900;
    letter-spacing: -0.052em;
    line-height: 1.03;
}

.expert-copy p {
    color: rgba(255, 255, 255, 0.91);
    font-size: 1rem;
    line-height: 1.72;
}

.expert-signature {
    align-self: flex-end;
    margin-top: 30px;
    padding-right: 8px;
    text-align: right;
    transform: rotate(-3deg);
}

.expert-signature-name {
    position: relative;
    display: inline-block;
    font-family: "Dancing Script", "Segoe Script", cursive;
    font-size: clamp(2.55rem, 4.6vw, 4rem);
    font-weight: 600;
    letter-spacing: -0.07em;
    line-height: 0.9;
    white-space: nowrap;
    text-shadow: 0 3px 18px rgba(0, 0, 0, 0.18);
}

.expert-signature-name::after {
    content: "";
    position: absolute;
    right: -4%;
    bottom: -0.19em;
    width: 108%;
    height: 2px;
    border-radius: var(--radius-pill);
    background: rgba(255, 255, 255, 0.72);
    transform: rotate(-2deg) skewX(-22deg);
    transform-origin: right center;
}

.expert-signature-img {
    display: block;
    max-width: 280px;
    width: 100%;
    height: auto;
    filter: drop-shadow(0 3px 18px rgba(0, 0, 0, 0.18));
}

/* 14. Pre-offer and pricing ------------------------------------------------ */
.pre-offer {
    padding-block: 52px;
    background: var(--color-bg-alt);
}

.pre-offer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 34px;
    padding: 30px 34px;
    border: 1px solid rgba(254, 89, 0, 0.25);
    border-radius: var(--radius-lg);
    background: linear-gradient(105deg, rgba(254, 89, 0, 0.09), rgba(255, 255, 255, 0.02));
}

.pre-offer .section-tag {
    margin-bottom: 12px;
}

.pre-offer h2 {
    max-width: 790px;
    font-size: clamp(1.65rem, 2.8vw, 2.4rem);
    font-weight: 850;
    letter-spacing: -0.04em;
    line-height: 1.1;
}

.pre-offer p {
    max-width: 760px;
    margin-top: 10px;
    color: var(--color-text-soft);
    font-size: 0.92rem;
}

.pre-offer .btn {
    flex: 0 0 auto;
}

.pricing-section {
    background: var(--color-bg);
}

.pricing-grid {
    display: grid;
    width: min(100%, 1030px);
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: stretch;
    gap: 20px;
    margin-inline: auto;
}

.pricing-card {
    display: flex;
    min-width: 0;
    flex-direction: column;
    padding: 31px 27px 26px;
    border-radius: var(--radius-lg);
    transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.pricing-card:hover {
    border-color: rgba(254, 89, 0, 0.28);
    transform: translateY(-4px);
}

.pricing-card.featured {
    border-color: rgba(254, 89, 0, 0.54);
    background: linear-gradient(160deg, rgba(254, 89, 0, 0.11), rgba(255, 255, 255, 0.025)), var(--color-surface);
    box-shadow: 0 24px 78px rgba(254, 89, 0, 0.10), var(--shadow-md);
}

.pricing-header {
    margin-bottom: 16px;
}

.pricing-header h3 {
    font-size: 1.42rem;
    font-weight: 850;
    letter-spacing: -0.035em;
    line-height: 1.18;
}

.pricing-desc {
    margin-top: 8px;
    color: var(--color-text-muted);
    font-size: 0.84rem;
}

.pricing-old-price {
    color: #696b75;
}

.pricing-price {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: 8px;
    margin-bottom: 9px;
}

.pricing-installments {
    margin-bottom: 5px;
}

.pricing-cash-price {
    margin-top: 2px;
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--color-border);
}

.currency {
    color: var(--color-text-soft);
    font-size: 0.98rem;
    font-weight: 600;
}

.amount {
    color: #fff;
    font-size: clamp(2.75rem, 4.1vw, 3.45rem);
    font-weight: 900;
    letter-spacing: -0.06em;
    line-height: 1;
}

.pricing-cash-text {
    color: #d6d7dd;
    font-size: 0.9rem;
}

.pricing-features {
    display: grid;
    margin-bottom: 23px;
}

.pricing-features li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 9px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.055);
    color: #d2d3da;
    font-size: 0.84rem;
    line-height: 1.45;
}

.pricing-features li svg {
    flex: 0 0 16px;
    margin-top: 2px;
}

.pricing-features .feature-disabled {
    color: #777985;
}

.plan-cta {
    min-height: 52px;
    margin-top: auto;
    font-size: 0.88rem;
}

.payment-methods {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 6px;
    margin-top: 17px;
}

.payment-icon {
    padding: 4px 7px;
    border: 1px solid var(--color-border);
    border-radius: 5px;
    background: rgba(255, 255, 255, 0.035);
    color: #b7b9c3;
    font-size: 0.58rem;
    font-weight: 800;
}

.payment-badges {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px 15px;
    margin-top: 15px;
}

.badge-item {
    display: flex;
    align-items: center;
    gap: 5px;
    color: var(--color-text-muted);
    font-size: 0.65rem;
}

.badge-item svg {
    flex: 0 0 15px;
}

/* 15. CTA and guarantee ---------------------------------------------------- */
.cta-section {
    overflow: hidden;
    background: var(--color-bg-alt);
}

.cta-section::before {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    width: min(640px, calc(100% - 40px));
    aspect-ratio: 1;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(254, 89, 0, 0.14), transparent 66%);
    transform: translate(-50%, -50%);
    pointer-events: none;
}

.cta-content {
    position: relative;
    width: min(100%, 1000px);
    margin-inline: auto;
    padding: 60px 34px;
    border: 1px solid rgba(254, 89, 0, 0.22);
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, rgba(254, 89, 0, 0.08), rgba(255, 255, 255, 0.018));
    text-align: center;
}

.cta-content h2 {
    max-width: 770px;
    margin-inline: auto;
    font-size: clamp(2.1rem, 3.7vw, 3.15rem);
    font-weight: 880;
    letter-spacing: -0.052em;
    line-height: 1.06;
    text-wrap: balance;
}

.cta-content p {
    max-width: 650px;
    margin: 18px auto 28px;
    color: var(--color-text-soft);
    font-size: 1rem;
}

.guarantee-section {
    padding-top: 0;
    background: var(--color-bg-alt);
}

.guarantee-card {
    display: grid;
    width: min(100%, 1040px);
    grid-template-columns: 90px 1fr;
    align-items: center;
    gap: 28px;
    margin-inline: auto;
    padding: 30px 34px;
    border: 1px solid rgba(254, 89, 0, 0.42);
    border-radius: var(--radius-lg);
    background: linear-gradient(115deg, rgba(254, 89, 0, 0.095), rgba(255, 255, 255, 0.02));
}

.guarantee-icon-wrapper {
    display: grid;
    width: 82px;
    height: 82px;
    place-items: center;
    border: 1px solid rgba(254, 89, 0, 0.36);
    border-radius: 22px;
    background: rgba(254, 89, 0, 0.10);
    color: var(--color-primary);
}

.guarantee-content h3 {
    margin-bottom: 9px;
    font-size: clamp(1.55rem, 2.6vw, 2.1rem);
    font-weight: 850;
    letter-spacing: -0.04em;
    line-height: 1.12;
}

.guarantee-content p {
    color: var(--color-text-soft);
    font-size: 0.9rem;
}

.guarantee-content p + p {
    margin-top: 8px;
    color: var(--color-text-muted);
    font-size: 0.8rem;
}

/* 16. FAQ ------------------------------------------------------------------ */
.faq-section {
    background: var(--color-bg);
}

.faq-grid {
    display: grid;
    width: min(100%, 860px);
    gap: 10px;
    margin-inline: auto;
}

.faq-item {
    overflow: hidden;
    border: 1px solid var(--color-border);
    border-radius: 13px;
    background: var(--color-surface);
    transition: border-color var(--transition), background var(--transition);
}

.faq-item.active {
    border-color: rgba(254, 89, 0, 0.34);
    background: var(--color-surface-raised);
}

.faq-question {
    display: flex;
    width: 100%;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding: 19px 21px;
    background: transparent;
    color: #fff;
    cursor: pointer;
    font-size: 0.98rem;
    font-weight: 680;
    text-align: left;
}

.faq-icon {
    position: relative;
    flex: 0 0 20px;
    width: 20px;
    height: 20px;
}

.faq-icon::before,
.faq-icon::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    width: 12px;
    height: 2px;
    border-radius: 99px;
    background: var(--color-primary);
    transform: translate(-50%, -50%);
    transition: transform var(--transition);
}

.faq-icon::after {
    transform: translate(-50%, -50%) rotate(90deg);
}

.faq-item.active .faq-icon::after {
    transform: translate(-50%, -50%) rotate(0deg);
}

.faq-answer {
    display: grid;
    grid-template-rows: 0fr;
    transition: grid-template-rows 300ms ease;
}

.faq-answer > p {
    min-height: 0;
    overflow: hidden;
    padding: 0 21px;
    color: var(--color-text-soft);
    font-size: 0.9rem;
    line-height: 1.72;
    transition: padding-bottom 300ms ease;
}

.faq-item.active .faq-answer {
    grid-template-rows: 1fr;
}

.faq-item.active .faq-answer > p {
    padding-bottom: 20px;
}

/* 17. Footer --------------------------------------------------------------- */
.footer {
    position: relative;
    overflow: hidden;
    padding: 64px 0 28px;
    border-top: 1px solid var(--color-border);
    background: #06070a;
}

.footer::before {
    content: "";
    position: absolute;
    top: -170px;
    left: 50%;
    width: min(420px, calc(100% - 40px));
    aspect-ratio: 1;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(254, 89, 0, 0.07), transparent 70%);
    transform: translateX(-50%);
}

.footer-content {
    position: relative;
    display: grid;
    grid-template-columns: minmax(260px, 1.4fr) 1fr;
    gap: 70px;
    padding-bottom: 44px;
}

.footer-logo {
    display: inline-flex;
    align-items: center;
    line-height: 0;
}

.footer-logo img {
    display: block;
    width: 168px;
    height: auto;
}

.footer-brand p {
    max-width: 420px;
    margin-top: 15px;
    color: var(--color-text-muted);
    font-size: 0.86rem;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 36px;
}

.footer-column h4 {
    margin-bottom: 14px;
    color: #fff;
    font-size: 0.88rem;
    font-weight: 760;
}

.footer-column ul {
    display: grid;
    gap: 9px;
}

.footer-column a {
    color: var(--color-text-muted);
    font-size: 0.82rem;
}

.footer-column a:hover {
    color: #ff7424;
}

.footer-bottom {
    position: relative;
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 28px;
    padding-top: 24px;
    border-top: 1px solid var(--color-border);
    color: #696b76;
    font-size: 0.74rem;
}

.risk-disclaimer {
    max-width: 760px;
}

/* 18. Floating controls ---------------------------------------------------- */
.floating-cta {
    position: fixed;
    right: 24px;
    bottom: 22px;
    z-index: 900;
    display: flex;
    align-items: center;
    gap: 9px;
    min-height: 48px;
    padding: 12px 19px;
    border-radius: var(--radius-pill);
    background: var(--gradient-primary);
    color: #fff;
    font-size: 0.84rem;
    font-weight: 760;
    box-shadow: 0 18px 45px rgba(254, 89, 0, 0.32);
    opacity: 0;
    visibility: hidden;
    transform: translateY(18px);
    transition: opacity var(--transition), visibility var(--transition), transform var(--transition);
}

.floating-cta.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top {
    position: fixed;
    right: 24px;
    bottom: 82px;
    z-index: 890;
    display: grid;
    width: 44px;
    height: 44px;
    place-items: center;
    border: 1px solid var(--color-border-strong);
    border-radius: 50%;
    background: rgba(17, 18, 26, 0.92);
    color: var(--color-text-soft);
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(16px);
    transition: opacity var(--transition), visibility var(--transition), transform var(--transition), background var(--transition), color var(--transition);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--color-primary);
    color: #fff;
}

/* 19. Lightbox ------------------------------------------------------------- */
.proof-lightbox[hidden] {
    display: none;
}

.proof-lightbox {
    position: fixed;
    inset: 0;
    z-index: 3000;
    display: grid;
    place-items: center;
    padding: 28px;
}

.proof-lightbox-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.88);
    cursor: zoom-out;
    backdrop-filter: blur(10px);
}

.proof-lightbox-dialog {
    position: relative;
    z-index: 1;
    max-width: min(920px, 92vw);
    max-height: 90vh;
}

.proof-lightbox-dialog img {
    max-height: 88vh;
    border: 1px solid var(--color-border-strong);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
}

.proof-lightbox-close {
    position: absolute;
    top: -16px;
    right: -16px;
    z-index: 2;
    display: grid;
    width: 42px;
    height: 42px;
    place-items: center;
    border: 1px solid var(--color-border-strong);
    border-radius: 50%;
    background: var(--color-surface);
    color: #fff;
    cursor: pointer;
}

/* 20. Scroll animation ----------------------------------------------------- */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(22px);
    transition: opacity 600ms ease, transform 600ms ease;
}

.animate-on-scroll.animated {
    opacity: 1;
    transform: translateY(0);
}

/* 21. Responsive layout ---------------------------------------------------- */
@media (max-width: 1180px) {
    :root {
        --container-padding: 28px;
    }

    .navbar .container {
        grid-template-columns: minmax(170px, 1fr) auto minmax(170px, 1fr);
    }

    .nav-links {
        gap: 21px;
    }

    .brand-logo {
        width: 124px;
    }

    .navbar.scrolled .brand-logo {
        width: 116px;
    }

    .benefits-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .benefit-card {
        min-height: 280px;
    }

    .method-timeline {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .timeline-line {
        display: none;
    }
}

@media (max-width: 900px) {
    :root {
        --section-space: 76px;
    }

    .navbar,
    .navbar.scrolled {
        height: 68px;
    }

    .navbar .container {
        grid-template-columns: 1fr auto;
    }

    .brand {
        grid-column: 1;
    }

    .brand-logo,
    .navbar.scrolled .brand-logo {
        width: 116px;
    }

    .nav-cta {
        display: none;
    }

    .mobile-menu-btn {
        display: block;
        grid-column: 2;
        justify-self: end;
    }

    .nav-links {
        position: fixed;
        top: 68px;
        right: var(--container-padding);
        left: var(--container-padding);
        display: grid;
        gap: 0;
        padding: 10px;
        border: 1px solid var(--color-border-strong);
        border-radius: 16px;
        background: rgba(13, 14, 20, 0.98);
        box-shadow: var(--shadow-lg);
        opacity: 0;
        visibility: hidden;
        transform: translateY(-12px);
        transition: opacity var(--transition), visibility var(--transition), transform var(--transition);
    }

    .nav-links.active {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }

    .nav-links a {
        display: block;
        padding: 13px 14px;
        border-radius: 10px;
    }

    .nav-links a::after {
        display: none;
    }

    .nav-links a:hover,
    .nav-links a.active {
        background: rgba(254, 89, 0, 0.08);
    }

    .hero {
        padding-top: 110px;
    }

    .hero-title {
        font-size: clamp(2.8rem, 7vw, 3.65rem);
    }

    .problem-content,
    .about-content {
        grid-template-columns: 1fr;
    }

    .problem-image {
        width: min(100%, 680px);
        margin-inline: auto;
    }

    .problem-text,
    .about-text {
        max-width: 720px;
        margin-inline: auto;
    }

    .about-text > .section-title {
        max-width: 720px;
    }

    .about-visual {
        width: min(100%, 720px);
        margin-inline: auto;
    }

    .method-timeline {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .modules-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .expert-card {
        grid-template-columns: 1fr;
    }

    .expert-visual {
        min-height: 500px;
    }

    .expert-copy {
        min-height: 390px;
    }

    .pre-offer-inner {
        flex-direction: column;
        align-items: flex-start;
    }

    .pricing-grid {
        width: min(100%, 540px);
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 38px;
    }
}

@media (max-width: 900px) {
    .curriculum-strip-inner {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .curriculum-chip:nth-child(2) {
        border-right: 0;
    }

    .curriculum-chip:nth-child(-n + 2) {
        border-bottom: 1px solid var(--color-border);
    }
}

@media (max-width: 720px) {
    :root {
        --container-padding: 20px;
        --section-space: 68px;
    }

    .section-header {
        margin-bottom: 42px;
    }

    .section-title {
        font-size: clamp(2rem, 8.5vw, 2.65rem);
    }

    .section-subtitle {
        margin-top: 18px;
        font-size: 0.98rem;
    }

    .hero {
        padding-top: 100px;
        padding-bottom: 68px;
    }

    .hero-badge {
        margin-bottom: 18px;
        font-size: 0.78rem;
    }

    .hero-title {
        font-size: clamp(2.15rem, 9.2vw, 2.85rem);
        letter-spacing: -0.052em;
        line-height: 1.03;
    }

    .hero-title-line {
        display: inline;
    }

    .hero-title-line + .hero-title-line::before {
        content: " ";
    }

    .hero-subtitle {
        margin-top: 21px;
        font-size: 1.08rem;
    }

    .hero-support {
        font-size: 0.92rem;
    }

    .hero-media-centered {
        margin-top: 46px;
    }

    .video-container {
        border-radius: 16px;
    }

    .hero-cta-after-video {
        width: 100%;
        flex-direction: column;
        margin-top: 26px;
    }

    .hero-cta-after-video .btn {
        width: 100%;
        min-width: 0;
    }

    .hero-facts {
        grid-template-columns: 1fr;
        gap: 9px;
        margin-top: 24px;
    }

    .hero-fact {
        min-height: 58px;
        flex-direction: row;
        gap: 10px;
    }

    .hero-fact span {
        margin-top: 0;
    }

    .benefits-grid,
    .method-timeline,
    .modules-grid,
    .bonuses-grid,
    .testimonials-videos {
        grid-template-columns: 1fr;
    }

    .benefit-card,
    .module-card,
    .bonus-card,
    .method-step {
        min-height: 0;
    }

    .method-steps-image {
        width: min(100%, 450px);
    }

    .steps-image-desktop {
        display: none;
    }

    .steps-image-mobile {
        display: block;
    }

    .bonuses-section {
        padding-top: 68px;
    }

    .results-carousel-manual {
        --carousel-per-view: 2;
        margin-top: 42px;
    }

    .results-carousel-shell {
        grid-template-columns: 38px minmax(0, 1fr) 38px;
        gap: 9px;
    }

    .results-carousel-arrow {
        width: 38px;
        height: 38px;
    }

    .expert-card {
        border-radius: 22px;
    }

    .expert-visual {
        min-height: clamp(420px, 112vw, 520px);
        padding: 28px 24px;
    }

    .expert-copy {
        min-height: 0;
        padding: 40px 25px 44px;
    }

    .expert-copy h2 {
        font-size: clamp(2.1rem, 9vw, 2.7rem);
    }

    .expert-signature {
        align-self: flex-start;
        padding-right: 0;
        text-align: left;
    }

    .pre-offer {
        padding-block: 40px;
    }

    .pre-offer-inner {
        padding: 26px 23px;
    }

    .pre-offer .btn {
        width: 100%;
    }

    .pricing-card {
        padding: 28px 22px 24px;
    }

    .cta-content {
        padding: 46px 23px;
    }

    .guarantee-card {
        grid-template-columns: 1fr;
        gap: 19px;
        padding: 27px 23px;
    }

    .guarantee-icon-wrapper {
        width: 66px;
        height: 66px;
        border-radius: 18px;
    }

    .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
    }
}

@media (max-width: 520px) {
    :root {
        --container-padding: 18px;
    }

    .brand-logo,
    .navbar.scrolled .brand-logo {
        width: 108px;
    }

    .footer-logo img {
        width: 150px;
    }

    .curriculum-strip-inner {
        grid-template-columns: 1fr;
    }

    .curriculum-chip {
        min-height: 58px;
        padding: 13px 15px;
        border-right: 0;
        border-bottom: 1px solid var(--color-border);
        font-size: 0.84rem;
    }

    .curriculum-chip:nth-child(-n + 2) {
        border-bottom: 1px solid var(--color-border);
    }

    .curriculum-chip:last-child {
        border-bottom: 0;
    }

    .section-tag,
    .hero-badge,
    .expert-eyebrow {
        min-height: 31px;
        padding: 6px 12px;
        font-size: 0.7rem;
    }

    .section-title {
        font-size: clamp(1.9rem, 9vw, 2.35rem);
    }

    .hero-title {
        font-size: clamp(1.95rem, 9vw, 2.48rem);
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .hero-media-label {
        font-size: 0.73rem;
    }

    .btn,
    .btn-lg {
        min-height: 52px;
        padding: 14px 20px;
        font-size: 0.94rem;
    }

    .benefit-card,
    .module-card,
    .bonus-card,
    .method-step {
        padding: 23px 21px;
    }

    .benefit-card.featured {
        padding-top: 60px;
    }

    .about-word {
        grid-template-columns: 70px 1fr;
        padding: 12px 13px;
        font-size: 0.82rem;
    }

    .about-card {
        grid-template-columns: 44px 1fr;
        padding: 18px;
    }

    .about-icon {
        width: 44px;
        height: 44px;
    }

    .results-carousel-manual {
        --carousel-per-view: 1;
    }

    .results-carousel-help {
        display: none;
    }

    .expert-photo {
        object-position: center 14%;
    }

    .expert-monogram {
        top: 28px;
        left: 24px;
    }

    .expert-name {
        font-size: 2rem;
    }

    .expert-signature-name {
        font-size: 2.7rem;
    }

    .amount {
        font-size: 2.7rem;
    }

    .payment-badges {
        justify-content: flex-start;
    }

    .faq-question {
        padding: 17px 18px;
        font-size: 0.92rem;
    }

    .faq-answer > p {
        padding-inline: 18px;
        font-size: 0.86rem;
    }

    .footer-links {
        gap: 24px;
    }

    .floating-cta {
        right: 14px;
        bottom: 14px;
        left: auto;
        min-height: 46px;
        padding: 11px 16px;
        justify-content: center;
    }

    .back-to-top {
        right: 14px;
        bottom: 72px;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        scroll-behavior: auto;
        animation-duration: 0.01ms;
        animation-iteration-count: 1;
        transition-duration: 0.01ms;
    }

    .animate-on-scroll {
        opacity: 1;
        transform: none;
    }
}