:root {
    --color-primary: #2aa2b0;
    --color-primary-dark: #1f6f7a;
    --color-accent: #7bd3b6;
    --color-surface: #f4fbfa;
    --color-surface-alt: #ecf7f6;
    --color-ink: #04252a;
    --color-muted: #4f6b6f;
    --color-muted-dark: #2c4549;
    --radius-md: 14px;
    --radius-lg: 22px;
    --shadow-md: 0 18px 32px rgba(32, 111, 118, 0.12);
    --shadow-lg: 0 28px 60px rgba(4, 37, 42, 0.16);
}

@import url("https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap");
@import url("https://fonts.googleapis.com/css2?family=Lato:wght@300;400;600;700&display=swap");

*,
*::before,
*::after {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    padding: 0;
    font-family: "Inter", "Lato", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: var(--color-surface);
    color: var(--color-ink);
    line-height: 1.6;
}

body {
    min-height: 100vh;
}

h1,
h2,
h3,
h4 {
    font-family: "Lato", "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    color: var(--color-ink);
    margin: 0;
}

p {
    margin: 0;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color 0.2s ease, opacity 0.2s ease;
}

a:hover {
    opacity: 0.85;
}

.container {
    width: min(1120px, calc(100% - 48px));
    margin: 0 auto;
}

section {
    padding: 96px 0;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 12px 22px;
    border-radius: 999px;
    font-weight: 600;
    letter-spacing: 0.01em;
    border: 1px solid transparent;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.btn:focus-visible {
    outline: 2px solid rgba(42, 162, 176, 0.45);
    outline-offset: 2px;
}

.section-heading {
    display: grid;
    gap: 16px;
    margin-bottom: 40px;
    max-width: 640px;
}
.hero {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    align-items: center;
    gap: 42px;
    margin-top: 28px;
}

.hero-copy h1 {
    font-size: clamp(2.2rem, 4vw, 3rem);
    line-height: 1.2;
    letter-spacing: -0.03em;
    color: var(--color-ink);
}

.hero-copy p {
    margin: 18px 0 26px;
    color: var(--color-muted);
    font-size: 1.02rem;
}

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

.hero-card {
    background: #fff;
    border: 1px solid rgba(42, 162, 176, 0.18);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow-lg);
}

.hero-card ul {
    list-style: none;
    display: grid;
    gap: 14px;
}

.hero-card li {
    display: grid;
    gap: 6px;
    color: var(--color-muted);
}

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

.hero-card span {
    display: none;
}
.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    color: #fff;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 18px 38px rgba(16, 185, 129, 0.22);
}

.btn-secondary {
    background: rgba(16, 185, 129, 0.12);
    color: var(--color-muted-dark);
    box-shadow: none;
    border: 1px solid rgba(42, 162, 176, 0.18);
}

.header {
    background: linear-gradient(160deg, var(--color-surface-alt) 0%, var(--color-surface) 45%, rgba(42, 162, 176, 0.18) 100%);
    color: var(--color-ink);
    padding-bottom: 96px;
    overflow: hidden;
}

.topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 0;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
}

.brand-logo {
    height: 42px;
    width: auto;
}

.brand-text {
    font-size: 26px;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--color-primary);
}

.nav-links {
    display: flex;
    gap: 22px;
    align-items: center;
}

.nav-links a {
    font-weight: 600;
    color: var(--color-muted);
    letter-spacing: 0.01em;
}

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

.nav-text {
    font-weight: 600;
    color: var(--color-muted);
    font-size: 0.95rem;
}

.hero {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    align-items: center;
    gap: 42px;
    margin-top: 28px;
}

.hero-copy h1 {
    font-size: clamp(2.2rem, 4vw, 3rem);
    line-height: 1.2;
    letter-spacing: -0.03em;
    color: var(--color-ink);
}

.hero-copy p {
    margin: 18px 0 26px;
    color: var(--color-muted);
    font-size: 1.02rem;
}
.hero-cta {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.cta-note {
    font-size: 0.95rem;
    color: var(--color-muted);
    background: rgba(42, 162, 176, 0.12);
    padding: 14px 18px;
    border-radius: 14px;
    line-height: 1.5;
}

.hero-cta .cta-note {
    display: inline-flex;
    align-items: center;
    background: rgba(16, 185, 129, 0.16);
    color: var(--color-muted-dark);
    font-weight: 600;
    border-radius: 999px;
    padding: 10px 18px;
}

.hero-card {
    background: #fff;
    border: 1px solid rgba(42, 162, 176, 0.18);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow-lg);
}

.btn-secondary:hover {
    transform: translateY(-2px);
}

.hero-card ul {
    list-style: none;
    display: grid;
    gap: 14px;
}

.hero-card li {
    display: grid;
    gap: 8px;
    color: var(--color-muted);
}

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

.hero-card p {
    margin: 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
}

.feature-card {
    background: var(--color-surface-alt);
    border-radius: 18px;
    padding: 28px;
    box-shadow: var(--shadow-md);
    border: 1px solid rgba(42, 162, 176, 0.18);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.feature-card h3 {
    margin-bottom: 12px;
    font-size: 1.22rem;
    color: var(--color-primary);
}

.feature-card p {
    color: var(--color-muted);
}

.guides-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
}

.guide-card {
    background: #fff;
    border-radius: 18px;
    padding: 28px;
    box-shadow: var(--shadow-md);
    border: 1px solid rgba(42, 162, 176, 0.16);
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.guide-card span {
    display: inline-flex;
    align-self: flex-start;
    background: rgba(16, 185, 129, 0.12);
    color: var(--color-primary);
    padding: 6px 14px;
    border-radius: 999px;
    font-weight: 600;
    font-size: 0.88rem;
}

.guide-card--placeholder {
    opacity: 0.7;
    background: var(--color-surface-alt);
    border-style: dashed;
}

.guide-card--placeholder h3 {
    color: var(--color-muted);
}

.image-placeholder {
    border: 1px dashed rgba(42, 162, 176, 0.4);
    background: rgba(16, 185, 129, 0.08);
    border-radius: 16px;
    padding: 36px;
    text-align: center;
    color: var(--color-muted);
    font-size: 0.95rem;
}

.footer {
    background: linear-gradient(160deg, #0d2426 0%, #224c4d 100%);
    color: rgba(236, 253, 245, 0.74);
    padding: 42px 0;
}

.footer .footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}

.footer .nav-text {
    color: rgba(236, 253, 245, 0.8);
    font-weight: 500;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 10px 18px;
    border-radius: 999px;
    background: rgba(42, 162, 176, 0.15);
    color: var(--color-primary);
    font-size: 0.88rem;
}

.guide-detail {
    padding: 120px 0 80px;
}

.guide-detail .topbar {
    padding-top: 0;
}

.guide-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 48px;
}

.guide-sidebar {
    position: sticky;
    top: 32px;
    align-self: start;
    background: #fff;
    border-radius: 20px;
    border: 1px solid rgba(42, 162, 176, 0.16);
    box-shadow: var(--shadow-md);
    padding: 28px;
    display: grid;
    gap: 18px;
}

.sidebar-note,
.guide-note {
    margin: 0;
    font-size: 0.93rem;
    color: var(--color-muted);
    background: rgba(42, 162, 176, 0.1);
    border: 1px solid rgba(42, 162, 176, 0.18);
    border-radius: 16px;
    padding: 16px 18px;
    line-height: 1.55;
}

.guide-sidebar h2 {
    font-size: 1.1rem;
    color: var(--color-muted-dark);
}

.checklist {
    display: grid;
    gap: 14px;
    list-style: none;
}

.checklist li {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    color: var(--color-muted);
    font-size: 0.95rem;
}

.checklist li span {
    width: 26px;
    height: 26px;
    border-radius: 50%;
    background: rgba(16, 185, 129, 0.16);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: var(--color-primary);
}

.guide-sidebar .btn {
    width: 100%;
}

.guide-content {
    background: #fff;
    border-radius: 26px;
    padding: 48px;
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(42, 162, 176, 0.14);
    display: grid;
    gap: 48px;
}

.guide-content h1 {
    font-size: 2.4rem;
    margin-bottom: 18px;
}

.guide-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    color: var(--color-muted);
    font-size: 0.95rem;
}

.pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(56, 148, 147, 0.12);
    padding: 6px 14px;
    border-radius: 999px;
    font-weight: 600;
    color: var(--color-primary-dark);
    font-size: 0.82rem;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.callout {
    border-left: 4px solid var(--color-primary);
    padding: 20px 24px;
    background: rgba(56, 148, 147, 0.1);
    border-radius: 14px;
    color: var(--color-muted-dark);
}

.cta {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 60px 72px;
    border: 1px solid rgba(42, 162, 176, 0.18);
    box-shadow: var(--shadow-lg);
    display: grid;
    gap: 18px;
}

.summary-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 24px;
}

.summary-card {
    background: rgba(56, 148, 147, 0.08);
    border: 1px solid rgba(56, 148, 147, 0.18);
    border-radius: 20px;
    padding: 24px;
}

.summary-card h3 {
    margin-bottom: 10px;
    font-size: 1.05rem;
    color: var(--color-primary-dark);
}

.step-list {
    display: grid;
    gap: 20px;
}

.step-item {
    background: rgba(255, 255, 255, 0.92);
    border-radius: 20px;
    padding: 24px;
    border: 1px solid rgba(56, 148, 147, 0.12);
    box-shadow: var(--shadow-md);
}

.step-item h3 {
    margin-bottom: 10px;
    font-size: 1.12rem;
}

.step-item ul {
    margin-top: 10px;
    padding-left: 18px;
    display: grid;
    gap: 8px;
    color: var(--color-muted);
}

@media (max-width: 1024px) {
    .guide-layout {
        grid-template-columns: 1fr;
    }

    .guide-sidebar {
        position: static;
    }
}

@media (max-width: 768px) {
    .guide-content {
        padding: 32px 24px;
    }
}

@media (max-width: 768px) {
    section {
        padding: 72px 0;
    }

    .cta {
        padding: 48px 32px;
    }

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

    .brand-logo {
        height: 32px;
    }

    .brand-text {
        font-size: 22px;
    }
}