:root {
    --paper: #faf9f6;
    --surface: #ffffff;
    --surface-soft: #f4efe7;
    --ink: #1a1a1a;
    --muted: #655f58;
    --line: #e5ddd3;
    --accent: #8b2500;
    --accent-soft: #f7e9e3;
    --study: #d8a516;
    --study-dark: #6f5110;
    --shadow: 0 18px 50px rgba(45, 32, 20, 0.09);
    --heading: "Playfair Display", Georgia, serif;
    --body: "Inter", Arial, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    margin: 0;
    background: var(--paper);
    color: var(--ink);
    font-family: var(--body);
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

.skip-link {
    position: absolute;
    left: -9999px;
    top: 8px;
    z-index: 1000;
    background: var(--ink);
    color: #fff;
    padding: 10px 14px;
}

.skip-link:focus { left: 8px; }

.wrap {
    width: min(1120px, calc(100% - 40px));
    margin: 0 auto;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    border-bottom: 1px solid var(--line);
    background: rgba(250, 249, 246, 0.95);
    backdrop-filter: blur(18px);
}

.header-inner {
    min-height: 68px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 11px;
    text-decoration: none;
}

.brand-mark {
    width: 34px;
    height: 34px;
    display: grid;
    place-items: center;
    border-radius: 10px;
    background: var(--accent-soft);
    color: var(--accent);
    font-family: var(--heading);
    font-weight: 700;
}

.brand strong {
    display: block;
    font-family: var(--heading);
    font-size: 20px;
    line-height: 1.05;
}

.brand small {
    display: block;
    margin-top: 3px;
    color: var(--study-dark);
    font-size: 10px;
    font-weight: 700;
    letter-spacing: .12em;
    text-transform: uppercase;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 8px;
}

.main-nav a {
    padding: 8px 13px;
    border-radius: 999px;
    color: var(--muted);
    font-size: 13px;
    font-weight: 600;
    text-decoration: none;
}

.main-nav a:hover,
.main-nav a[aria-current="page"] {
    background: var(--accent-soft);
    color: var(--accent);
}

.eyebrow {
    color: var(--study-dark);
    font-size: 12px;
    font-weight: 800;
    letter-spacing: .14em;
    text-transform: uppercase;
}

.hero { padding: 78px 0 58px; }

.hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.25fr) minmax(280px, .75fr);
    align-items: center;
    gap: 64px;
}

h1, h2, h3 { font-family: var(--heading); }

h1 {
    max-width: 760px;
    margin: 12px 0 20px;
    font-size: clamp(42px, 6vw, 72px);
    line-height: 1.02;
    letter-spacing: -.035em;
}

h1 em { color: var(--accent); font-weight: 400; }

.lead {
    max-width: 700px;
    margin: 0;
    color: var(--muted);
    font-family: var(--heading);
    font-size: clamp(18px, 2.3vw, 23px);
    line-height: 1.55;
}

.actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 30px;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 46px;
    padding: 0 22px;
    border: 1px solid var(--accent);
    border-radius: 999px;
    background: var(--accent);
    color: #fff;
    font-size: 14px;
    font-weight: 700;
    text-decoration: none;
}

.button:hover { background: #aa3c17; }

.button.secondary {
    background: transparent;
    color: var(--accent);
}

.button.secondary:hover { background: var(--accent-soft); }

.book-stage {
    min-height: 410px;
    display: grid;
    place-items: center;
    position: relative;
}

.book-stage::before {
    content: "";
    position: absolute;
    inset: 16% 4% 3%;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(216,165,22,.25), transparent 68%);
}

.book-cover {
    width: min(270px, 76vw);
    aspect-ratio: 2 / 3;
    z-index: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 30px 26px;
    border: 1px solid rgba(255,255,255,.2);
    border-radius: 4px 14px 14px 4px;
    background: linear-gradient(145deg, #30261d, #17120f);
    box-shadow: -12px 14px 0 #d7c5aa, 0 30px 55px rgba(32,22,15,.28);
    color: #f5ead8;
    transform: rotate(2deg);
}

.book-cover small {
    color: #e3c66e;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: .13em;
    text-transform: uppercase;
}

.book-cover strong {
    font-family: var(--heading);
    font-size: 38px;
    line-height: 1.05;
}

.section { padding: 68px 0; }

.section.soft {
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    background: var(--surface-soft);
}

.section-heading { max-width: 760px; margin-bottom: 32px; }

.section-heading h2 {
    margin: 8px 0 10px;
    font-size: clamp(30px, 4vw, 46px);
    line-height: 1.13;
}

.section-heading p { margin: 0; color: var(--muted); }

.steps {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 8px;
}

.step {
    min-height: 100px;
    padding: 16px 10px;
    border: 1px solid var(--line);
    border-top: 4px solid var(--study);
    border-radius: 10px;
    background: var(--surface);
    text-align: center;
}

.step b {
    display: block;
    color: var(--study-dark);
    font-size: 12px;
}

.step span { display: block; margin-top: 12px; font-size: 13px; font-weight: 700; }

.feature-grid,
.route-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
}

.card {
    padding: 25px;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: var(--surface);
    box-shadow: 0 8px 24px rgba(45,32,20,.04);
}

.card h3 { margin: 0 0 10px; font-size: 21px; }
.card p { margin: 0; color: var(--muted); font-size: 14px; }
.route-grid > a.card { display: block; color: inherit; text-decoration: none; transition: transform .2s ease, box-shadow .2s ease; }
.route-grid > a.card:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.route-grid > a.card:focus-visible { outline: 3px solid var(--study); outline-offset: 3px; }

.work-card {
    display: grid;
    grid-template-columns: 190px 1fr;
    gap: 36px;
    align-items: center;
    padding: 36px;
    border: 1px solid var(--line);
    border-radius: 20px;
    background: var(--surface);
    box-shadow: var(--shadow);
}

.mini-cover {
    aspect-ratio: 2 / 3;
    display: grid;
    place-items: center;
    padding: 18px;
    border-radius: 4px 10px 10px 4px;
    background: #241c16;
    color: #f4e4c8;
    font-family: var(--heading);
    font-size: 25px;
    text-align: center;
}

.work-card h2 { margin: 7px 0 10px; font-size: 38px; }
.work-card p { color: var(--muted); }

.facts {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 20px 0;
}

.facts span {
    padding: 6px 10px;
    border-radius: 999px;
    background: var(--surface-soft);
    color: var(--muted);
    font-size: 12px;
    font-weight: 600;
}

.breadcrumb {
    padding-top: 30px;
    color: var(--muted);
    font-size: 13px;
}

.breadcrumb a { color: var(--accent); text-decoration: none; }

.route-hero { padding: 34px 0 42px; }

.route-hero h1 { max-width: none; font-size: clamp(44px, 7vw, 76px); }

.notice {
    margin-top: 26px;
    padding: 18px 20px;
    border-left: 4px solid var(--study);
    border-radius: 0 10px 10px 0;
    background: #fff9e8;
    color: #4e4021;
    font-size: 14px;
}

.phase { margin-top: 38px; }

.phase-title {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 14px;
}

.phase-number {
    width: 34px;
    height: 34px;
    display: grid;
    place-items: center;
    flex: 0 0 auto;
    border-radius: 50%;
    background: var(--study);
    color: #271d08;
    font-size: 13px;
    font-weight: 800;
}

.phase-title h2 { margin: 0; font-size: 27px; }

.lesson-card { position: relative; min-height: 160px; }

.lesson-card .status {
    display: inline-block;
    margin-bottom: 14px;
    color: var(--study-dark);
    font-size: 10px;
    font-weight: 800;
    letter-spacing: .1em;
    text-transform: uppercase;
}

.lesson-card.available { border-color: #c7aa58; }

.lesson-card.pending { background: #f8f6f2; }

/* Lições do percurso */
.lesson-shell {
    width: min(820px, calc(100% - 40px));
    margin: 0 auto;
    padding: 42px 0 20px;
}

.lesson-shell > h1 {
    margin: 0 0 18px;
    font-size: clamp(38px, 6vw, 58px);
    line-height: 1.08;
}

.lesson-shell h2 {
    margin: 34px 0 12px;
    font-size: clamp(24px, 3.5vw, 32px);
    line-height: 1.2;
}

.lesson-shell h3 { margin: 25px 0 9px; font-size: 20px; }
.lesson-shell p { margin: 0 0 17px; color: #37322e; }
.lesson-shell ul, .lesson-shell ol { margin: 0 0 20px; padding-left: 24px; }
.lesson-shell li { margin-bottom: 9px; }
.lesson-shell a { color: var(--accent); }

.article-body {
    padding: 0;
    border: 0;
    background: transparent;
}

.study-note,
.notice,
.spoiler,
.book-access {
    margin: 22px 0;
    padding: 17px 19px;
    border-left: 4px solid var(--study);
    border-radius: 0 10px 10px 0;
    background: #fff9e8;
    color: #4e4021;
    font-size: 14px;
}

.spoiler { border-left-color: var(--accent); background: var(--accent-soft); }

.stats,
.steps,
.routes {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin: 24px 0;
}

.stat,
.route,
.lesson-shell .step {
    min-height: 0;
    padding: 16px;
    border: 1px solid var(--line);
    border-radius: 10px;
    background: var(--surface);
    text-align: left;
}

.stat strong,
.route strong,
.lesson-shell .step strong { display: block; margin-bottom: 5px; }

.check { color: #356638; font-weight: 700; }

.lesson-nav {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 10px;
    align-items: stretch;
    margin: 44px 0 8px;
    padding-top: 22px;
    border-top: 1px solid var(--line);
}

.lesson-nav a {
    display: block;
    padding: 11px 13px;
    border: 1px solid var(--line);
    border-radius: 9px;
    background: var(--surface);
    color: var(--ink);
    font-size: 12px;
    line-height: 1.35;
    text-decoration: none;
}

.lesson-nav a.center {
    background: var(--ink);
    border-color: var(--ink);
    color: #fff;
    text-align: center;
}

.lesson-nav a.next { text-align: right; }

.lesson-nav small {
    display: block;
    margin-bottom: 2px;
    color: var(--muted);
    font-size: 10px;
    letter-spacing: .06em;
    text-transform: uppercase;
}

.lesson-nav a.center small { color: inherit; }

.lesson-figure {
    margin: 28px 0;
    overflow: hidden;
    border-radius: 14px;
    background: var(--surface-soft);
}

.lesson-figure img { display: block; width: 100%; height: auto; }

.site-footer {
    margin-top: 70px;
    padding: 38px 0;
    border-top: 1px solid var(--line);
    color: var(--muted);
    font-size: 13px;
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    gap: 24px;
}

.footer-inner a { color: var(--accent); text-decoration: none; }

@media (max-width: 860px) {
    .hero-grid { grid-template-columns: 1fr; gap: 28px; }
    .book-stage { min-height: 350px; }
    .steps { grid-template-columns: repeat(4, 1fr); }
    .feature-grid, .route-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 620px) {
    .wrap { width: min(100% - 28px, 1120px); }
    .header-inner { align-items: flex-start; padding: 14px 0; }
    .main-nav { flex-direction: column; align-items: flex-end; gap: 2px; }
    .main-nav a { padding: 5px 9px; }
    .hero { padding-top: 48px; }
    .steps { grid-template-columns: repeat(2, 1fr); }
    .feature-grid, .route-grid { grid-template-columns: 1fr; }
    .work-card { grid-template-columns: 1fr; padding: 24px; }
    .mini-cover { width: 170px; }
    .footer-inner { flex-direction: column; }
    .lesson-shell { width: min(100% - 28px, 820px); padding-top: 30px; }
    .lesson-shell .stats, .lesson-shell .steps, .lesson-shell .routes { grid-template-columns: 1fr; }
    .lesson-nav { grid-template-columns: 1fr; }
    .lesson-nav a, .lesson-nav a.next { text-align: center; }
}

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