:root {
    --ebook-bg: #0f1115;
    --ebook-bg-soft: #151922;
    --ebook-card: #1b202b;
    --ebook-line: #2b313d;
    --ebook-text: #f3f5f7;
    --ebook-text-soft: #aab1bf;
    --ebook-red: #c1121f;
    --ebook-red-soft: #ff4d6d;
    --ebook-cta: #16a34a;
    --ebook-cta-soft: #22c55e;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background:
        radial-gradient(circle at 12% 0%, rgba(255, 255, 255, 0.06), transparent 34%),
        radial-gradient(circle at 90% 10%, rgba(148, 163, 184, 0.08), transparent 42%),
        var(--ebook-bg);
    color: var(--ebook-text);
    font-family: "Inter", system-ui, -apple-system, sans-serif;
}

.container {
    width: min(92%, 1160px);
    margin: 0 auto;
}

.ebook-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(12, 15, 20, 0.88);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid #2b313d;
}

.ebook-header-inner {
    min-height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.ebook-brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}

.ebook-brand-icon {
    width: 34px;
    height: 34px;
    border-radius: 10px;
    display: grid;
    place-items: center;
    background: linear-gradient(135deg, #1d2430, #273041);
    border: 1px solid #394459;
    color: #d8deea;
}

.ebook-brand-text {
    color: #f4f6f8;
    font-size: 1.08rem;
    font-weight: 700;
    letter-spacing: -0.01em;
}

.ebook-nav {
    display: flex;
    align-items: center;
    gap: 16px;
}

.ebook-nav a {
    text-decoration: none;
    color: #b9c1cf;
    font-weight: 600;
    font-size: 0.92rem;
    transition: color 0.25s ease;
}

.ebook-nav a:hover {
    color: #f4f6f8;
}

.ebook-header-cta {
    padding: 10px 14px;
    font-size: 0.88rem;
}

.ebook-hero {
    padding: 56px 0 24px;
}

.ebook-hero-grid {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: 18px;
    align-items: center;
}

.ebook-hero-visual {
    justify-self: start;
}

.ebook-badge {
    display: inline-flex;
    padding: 8px 12px;
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, 0.45);
    background: rgba(255, 255, 255, 0.1);
    color: #ffffff;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.06em;
}

.ebook-hero-copy h1 {
    margin: 14px 0 14px;
    font-size: clamp(2rem, 4vw, 3.2rem);
    line-height: 1.08;
    letter-spacing: -0.02em;
}

.ebook-hero-video {
    width: min(100%, 640px);
    margin: 0 0 18px;
    border-radius: 14px;
    overflow: hidden;
    border: 1px solid #2f3746;
    background: #0e1218;
    box-shadow: 0 14px 28px rgba(7, 9, 13, 0.42);
}

.ebook-hero-video iframe {
    display: block;
    width: 100%;
    aspect-ratio: 16 / 9;
    height: auto;
}

.ebook-hero-copy p {
    margin: 0;
    color: var(--ebook-text-soft);
    line-height: 1.65;
}

.ebook-quick-points {
    margin: 24px 0;
    padding: 0;
    list-style: none;
    display: grid;
    gap: 10px;
}

.ebook-quick-points li {
    padding-left: 28px;
    position: relative;
    color: #d7dce6;
}

.ebook-quick-points li::before {
    content: "";
    width: 10px;
    height: 10px;
    border-radius: 999px;
    background: linear-gradient(135deg, #ffffff, #d7dce6);
    box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.35);
    position: absolute;
    left: 4px;
    top: 9px;
}

.ebook-hero-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.ebook-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    border-radius: 12px;
    padding: 12px 18px;
    font-weight: 700;
    transition: transform 0.25s ease, box-shadow 0.25s ease, filter 0.25s ease;
}

.ebook-btn-primary {
    color: #fff;
    background: linear-gradient(135deg, var(--ebook-cta), var(--ebook-cta-soft));
    box-shadow: 0 10px 24px rgba(22, 163, 74, 0.28);
}

.ebook-btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 12px 24px rgba(22, 163, 74, 0.34);
    filter: brightness(1.05);
}

.ebook-btn-secondary {
    color: var(--ebook-text);
    border: 1px solid #3a4150;
    background: rgba(255, 255, 255, 0.02);
}

.ebook-btn-secondary:hover {
    border-color: #616a7d;
    background: rgba(255, 255, 255, 0.05);
}

.ebook-security-proof {
    margin-top: 14px;
}

.ebook-security-image {
    display: block;
    width: min(100%, 317px);
    height: auto;
    border-radius: 12px;
    border: 0;
    background: rgba(15, 17, 21, 0.22);
    box-shadow: 0 10px 20px rgba(15, 17, 21, 0.26);
}

.ebook-price-tag {
    margin-top: 18px;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: linear-gradient(145deg, rgba(15, 17, 21, 0.9), rgba(20, 24, 32, 0.92));
    border: 1px solid rgba(92, 103, 123, 0.42);
    border-radius: 999px;
    box-shadow: 0 10px 24px rgba(10, 12, 16, 0.32);
    padding: 11px 18px;
}

.ebook-price-tag span {
    color: #b7becb;
    font-size: 0.82rem;
}

.ebook-price-tag strong {
    color: #90f6b5;
    font-size: 1.14rem;
}

.ebook-cover-wrap {
    position: relative;
    display: grid;
    align-items: center;
    justify-items: start;
}

.ebook-cover-glow {
    position: absolute;
    width: min(86%, 380px);
    aspect-ratio: 1;
    border-radius: 999px;
    background: radial-gradient(circle, rgba(148, 163, 184, 0.2), transparent 70%);
    filter: blur(22px);
}

.ebook-cover-image {
    display: block;
    width: min(180%, 700px);
    margin: 0;
    border-radius: 14px;
    height: auto;
    transform: translateX(-120px);
}

.ebook-trust-bar {
    margin-top: 30px;
    border: 1px solid var(--ebook-line);
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.02);
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    overflow: hidden;
}

.ebook-trust-bar div {
    padding: 14px 16px;
    text-align: center;
    color: #bec5d2;
    border-right: 1px solid var(--ebook-line);
}

.ebook-trust-bar div:last-child {
    border-right: 0;
}

.ebook-trust-bar strong {
    color: #fff;
}

.ebook-section {
    padding: 78px 0;
}

.ebook-section-contrast {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.015) 0%, rgba(255, 255, 255, 0.03) 100%);
    border-top: 1px solid #222935;
    border-bottom: 1px solid #222935;
}

.ebook-section-head {
    text-align: center;
    margin-bottom: 34px;
}

.ebook-section-head h2 {
    margin: 0 0 8px;
    font-size: clamp(1.6rem, 2.8vw, 2.2rem);
}

.ebook-section-head p {
    margin: 0;
    color: var(--ebook-text-soft);
}

.ebook-benefits-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.ebook-benefit-card {
    background: var(--ebook-card);
    border: 1px solid #31394a;
    border-radius: 14px;
    padding: 22px;
}

.ebook-benefit-card h3 {
    margin: 0 0 8px;
    font-size: 1.06rem;
}

.ebook-benefit-card p {
    margin: 0;
    color: var(--ebook-text-soft);
    line-height: 1.6;
}

.ebook-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.ebook-panel {
    background: var(--ebook-card);
    border: 1px solid #30384a;
    border-radius: 14px;
    padding: 22px;
}

.ebook-panel h2 {
    margin: 0 0 12px;
    font-size: 1.2rem;
}

.ebook-panel ul {
    margin: 0;
    padding-left: 18px;
    color: var(--ebook-text-soft);
    display: grid;
    gap: 8px;
}

.ebook-chapters {
    display: grid;
    gap: 12px;
}

.chapter-item {
    display: grid;
    grid-template-columns: 58px 1fr;
    gap: 14px;
    background: var(--ebook-card);
    border: 1px solid #30384a;
    border-radius: 14px;
    padding: 16px;
}

.chapter-icon {
    width: 42px;
    height: 42px;
    border-radius: 12px;
    display: grid;
    place-items: center;
    background: linear-gradient(145deg, #2a3140, #1f2633);
    border: 1px solid #46506a;
    color: #eef2f8;
    font-size: 0.98rem;
}

.chapter-item h3 {
    margin: 0 0 6px;
    font-size: 1.02rem;
}

.chapter-synopsis {
    margin: 0;
    color: var(--ebook-text-soft);
    line-height: 1.56;
}

.ebook-author-card {
    display: grid;
    grid-template-columns: 220px 1fr;
    gap: 20px;
    align-items: start;
    background: var(--ebook-card);
    border: 1px solid #30394d;
    border-radius: 14px;
    padding: 22px;
}

.author-photo-wrap {
    border-radius: 14px;
    overflow: hidden;
    border: 1px solid #354056;
    background: #151b26;
}

.author-photo {
    display: block;
    width: 100%;
    aspect-ratio: 4 / 5;
    object-fit: cover;
}

.author-content {
    display: grid;
    gap: 10px;
}

.ebook-author-card h2 {
    margin: 0;
    font-size: 1.4rem;
}

.author-role {
    margin: 0;
    color: #d5dceb;
    font-weight: 600;
    font-size: 0.98rem;
}

.ebook-author-card p {
    margin: 0;
    color: var(--ebook-text-soft);
    line-height: 1.65;
}

.author-cert-list {
    margin: 4px 0 0;
    padding-left: 18px;
    color: #d6dce8;
    display: grid;
    gap: 6px;
}

.ebook-faq-list {
    max-width: 880px;
    margin: 0 auto;
    display: grid;
    gap: 10px;
}

.ebook-faq-item {
    background: var(--ebook-card);
    border: 1px solid #30384a;
    border-radius: 12px;
    overflow: hidden;
}

.ebook-faq-question {
    width: 100%;
    text-align: left;
    border: 0;
    background: transparent;
    color: var(--ebook-text);
    font-size: 0.98rem;
    font-weight: 600;
    cursor: pointer;
    padding: 16px 18px;
}

.ebook-faq-question:hover {
    background: rgba(255, 255, 255, 0.04);
}

.ebook-faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.25s ease;
}

.ebook-faq-item.active .ebook-faq-answer {
    max-height: 180px;
}

.ebook-faq-answer p {
    margin: 0;
    color: var(--ebook-text-soft);
    line-height: 1.6;
    padding: 0 18px 16px;
}

.ebook-final-cta {
    padding: 86px 0 94px;
}

.ebook-final-cta-inner {
    text-align: center;
    background: linear-gradient(160deg, #1a202b 0%, #141922 100%);
    border: 1px solid #343d4f;
    border-radius: 20px;
    padding: 32px 20px;
}

.final-kicker {
    margin: 0;
    color: #ff9cad;
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.ebook-final-cta-inner h2 {
    margin: 12px 0 10px;
    font-size: clamp(1.5rem, 3vw, 2.3rem);
}

.final-price {
    margin: 0 0 16px;
    color: #cad0db;
}

.final-price strong {
    color: #90f6b5;
    font-size: 1.5rem;
}

.final-note {
    margin: 10px 0 0;
    color: #8f98a7;
    font-size: 0.85rem;
}

/* Landing footer mirror for /comoprogramar */
footer {
    background: linear-gradient(180deg, #171b24 0%, #131720 100%);
    padding: 76px 0 34px;
    border-top: 1px solid #2a3040;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 50px;
}

.footer-column h3 {
    margin-bottom: 25px;
    font-size: 18px;
    font-weight: 600;
}

.footer-column p {
    color: #a8adbb;
    margin-bottom: 20px;
}

.footer-column ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-column ul li {
    margin-bottom: 12px;
    color: #a8adbb;
}

.footer-column a {
    color: #a8adbb;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-column a:hover {
    color: #f3f5f7;
}

.social-links {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: #272b35;
    border: 1px solid rgba(255, 255, 255, 0.08);
    color: #a8adbb;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background-color: #c1121f;
    color: #ffffff;
    transform: translateY(-2px);
}

.copyright {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid #272b35;
    color: #8f98a7;
    font-size: 14px;
}

.footer-disclaimer {
    margin: 12px auto 0;
    max-width: 980px;
    color: #a8adbb;
    font-size: 12px;
    line-height: 1.6;
}

@media (max-width: 980px) {
    .ebook-header-inner {
        min-height: 64px;
    }

    .ebook-nav {
        gap: 12px;
    }

    .ebook-nav a {
        font-size: 0.88rem;
    }

    .ebook-hero-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .ebook-hero-visual {
        justify-self: stretch;
    }

    .ebook-cover-wrap {
        justify-items: center;
    }

    .ebook-cover-image {
        width: min(100%, 520px);
        margin: 0 auto;
        transform: none;
    }

    .ebook-trust-bar {
        grid-template-columns: 1fr;
    }

    .ebook-trust-bar div {
        border-right: 0;
        border-bottom: 1px solid var(--ebook-line);
    }

    .ebook-trust-bar div:last-child {
        border-bottom: 0;
    }

    .ebook-benefits-grid,
    .ebook-split {
        grid-template-columns: 1fr;
    }

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

    .author-photo-wrap {
        max-width: 280px;
    }

    footer {
        padding-top: 64px;
        padding-bottom: 30px;
    }
}

@media (max-width: 640px) {
    .ebook-nav a:not(.ebook-header-cta) {
        display: none;
    }

    .ebook-header-cta {
        padding: 9px 12px;
        font-size: 0.82rem;
    }

    .ebook-hero {
        padding-top: 48px;
        padding-bottom: 20px;
    }

    .ebook-hero-visual {
        overflow-x: hidden;
    }

    .ebook-cover-wrap {
        justify-items: center;
    }

    .ebook-cover-image {
        width: min(130vw, 680px);
        max-width: none;
        margin: 0;
        position: relative;
        left: 37%;
        transform: translateX(-48%);
    }

    .ebook-btn {
        width: 100%;
    }

    .ebook-security-proof {
        width: 100%;
    }

    .ebook-security-image {
        width: 100%;
        max-width: none;
    }

    .chapter-item {
        grid-template-columns: 44px 1fr;
    }

    .chapter-icon {
        width: 36px;
        height: 36px;
        border-radius: 10px;
        font-size: 0.9rem;
    }

    footer {
        padding-top: 56px;
        padding-bottom: 26px;
    }
}