@import url('https://fonts.googleapis.com/css2?family=Fredoka:wght@500;600;700&family=Quicksand:wght@400;500;600;700&family=Nunito:wght@500;600;700&display=swap');

body[data-theme] {
    --font-display: 'Fredoka', sans-serif;
    --font-body: 'Quicksand', sans-serif;
    --font-accent: 'Nunito', sans-serif;

    --radius-sm: 10px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    --space-xs: 0.5rem;
    --space-sm: 0.75rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;

    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s ease;
    --transition-slow: 0.4s ease;

    --chrome-surface: rgba(255, 255, 255, 0.9);
    --chrome-surface-strong: rgba(255, 255, 255, 0.96);
    --chrome-shadow: 0 10px 32px var(--shadow);
    color-scheme: light;
}

body[data-theme="core"] {
    --primary: #F8A5B8;
    --primary-light: #FFCAD4;
    --primary-dark: #E8899C;
    --secondary: #7BC8F6;
    --secondary-light: #A5DDFB;
    --secondary-dark: #5AADE0;
    --accent: #C9A0DC;
    --accent-light: #DFC5EC;
    --accent-dark: #A87DC2;
    --gold: #F5D76E;
    --success: #8ED16C;
    --success-dark: #6DB855;
    --bg-main: #FFF9F5;
    --bg-gradient: linear-gradient(135deg, #FFF9F5 0%, #F0F8FF 50%, #FFF5F8 100%);
    --card-bg: #FFFFFF;
    --border: #F0E6EB;
    --shadow: rgba(248, 165, 184, 0.15);
    --text-dark: #5D4E60;
    --text-medium: #6B5C70;
    --text-light: #807084;
}

body[data-shell="article"] { --shell-width: 900px; }
body[data-shell="hub"] { --shell-width: 1100px; }

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

html { scroll-behavior: smooth; }

body {
    margin: 0;
    font-family: var(--font-body);
    color: var(--text-dark);
    background: var(--bg-main);
    line-height: 1.7;
    letter-spacing: 0.01em;
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    background:
        var(--bg-gradient),
        radial-gradient(circle at 20% 20%, rgba(248, 165, 184, 0.10) 0%, transparent 45%),
        radial-gradient(circle at 80% 15%, rgba(123, 200, 246, 0.08) 0%, transparent 40%),
        radial-gradient(circle at 50% 75%, rgba(201, 160, 220, 0.08) 0%, transparent 45%);
    pointer-events: none;
    z-index: -1;
}

a { color: var(--primary-dark); text-decoration: none; transition: color var(--transition-fast); }
a:hover { color: var(--secondary-dark); }

h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 700; line-height: 1.3; margin: 0 0 var(--space-md); }
h1 { font-size: clamp(1.8rem, 4vw, 2.6rem); }
h2 { font-size: clamp(1.4rem, 3vw, 2rem); }
h3 { font-size: clamp(1.1rem, 2vw, 1.5rem); }

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

.header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--chrome-surface);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
    padding: 0 var(--space-lg);
}

.header-inner {
    max-width: calc(var(--shell-width) + var(--space-xl) * 2);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 60px;
}

.logo {
    font-family: var(--font-display);
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary-dark);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
}

.logo:hover { color: var(--primary-dark); opacity: 0.8; }

.nav { display: flex; gap: var(--space-xs); }

.nav a {
    padding: 0.4rem 1rem;
    border-radius: var(--radius-full);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-medium);
    text-decoration: none;
    transition: all var(--transition-fast);
}

.nav a:hover,
.nav a.active {
    background: var(--primary-light);
    color: var(--primary-dark);
    box-shadow: inset 0 -2px 0 0 var(--primary-dark);
}

.container {
    width: min(calc(100% - 2rem), var(--shell-width));
    margin: 0 auto;
    padding: var(--space-xl) 0 var(--space-3xl);
}

.hero {
    text-align: center;
    padding: var(--space-3xl) 0 var(--space-2xl);
}

.hero h1 {
    font-size: clamp(2rem, 5vw, 3.2rem);
    margin-bottom: var(--space-sm);
    color: var(--text-dark);
}

.hero .subtitle {
    font-size: 1.1rem;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto var(--space-xl);
}

.btn-group {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-sm);
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: 0.7rem 1.6rem;
    border-radius: var(--radius-full);
    font-family: var(--font-body);
    font-weight: 700;
    font-size: 0.95rem;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: all var(--transition-normal);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 6px 20px var(--shadow); color: #fff; }

.btn-secondary {
    background: linear-gradient(135deg, var(--secondary), var(--secondary-dark));
    color: #fff;
}
.btn-secondary:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(123, 200, 246, 0.25); color: #fff; }

.btn-outline {
    border: 2px solid var(--primary);
    color: var(--primary-dark);
    background: transparent;
}
.btn-outline:hover { background: var(--primary-light); transform: translateY(-2px); }

.card {
    background: rgba(255, 255, 255, 0.92);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: 0 8px 28px var(--shadow);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.card:hover { transform: translateY(-2px); box-shadow: 0 12px 36px rgba(248, 165, 184, 0.2); }

.stat-pills {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-bottom: var(--space-xl);
}

.stat-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.35rem 1rem;
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    font-weight: 600;
    background: rgba(123, 200, 246, 0.12);
    color: var(--secondary-dark);
}

.stat-pill.pink { background: rgba(248, 165, 184, 0.12); color: var(--primary-dark); }
.stat-pill.purple { background: rgba(201, 160, 220, 0.12); color: var(--accent-dark); }
.stat-pill.gold { background: rgba(245, 215, 110, 0.18); color: #b8960f; }

.breadcrumb {
    font-size: 0.9rem;
    color: var(--text-light);
    margin-bottom: var(--space-md);
}

.breadcrumb a { color: var(--primary-dark); }
.breadcrumb span { color: var(--text-light); }

.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-lg); }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-lg); }

.feature-card {
    text-align: center;
    padding: var(--space-xl);
}

.feature-card .icon {
    width: 56px;
    height: 56px;
    margin: 0 auto var(--space-md);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.feature-card .icon.pink { background: rgba(248, 165, 184, 0.16); }
.feature-card .icon.blue { background: rgba(123, 200, 246, 0.16); }
.feature-card .icon.purple { background: rgba(201, 160, 220, 0.16); }
.feature-card .icon.gold { background: rgba(245, 215, 110, 0.18); }

.feature-card h3 { font-size: 1.15rem; margin-bottom: var(--space-xs); }
.feature-card p { color: var(--text-light); font-size: 0.93rem; margin: 0; }

.table-wrap {
    overflow-x: auto;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    box-shadow: 0 4px 16px var(--shadow);
}

table {
    width: 100%;
    border-collapse: collapse;
    background: #fff;
}

thead th {
    background: linear-gradient(135deg, rgba(248, 165, 184, 0.15), rgba(123, 200, 246, 0.1));
    padding: 0.9rem var(--space-md);
    text-align: left;
    font-family: var(--font-display);
    font-weight: 600;
    color: var(--text-dark);
    font-size: 0.9rem;
}

tbody td {
    padding: 0.8rem var(--space-md);
    border-top: 1px solid var(--border);
    color: var(--text-medium);
    font-size: 0.9rem;
}

.step-list { list-style: none; padding: 0; counter-reset: step; }

.step-list li {
    counter-increment: step;
    display: flex;
    gap: var(--space-md);
    align-items: flex-start;
    padding: var(--space-lg) 0;
    border-bottom: 1px solid var(--border);
}

.step-list li:last-child { border-bottom: none; }

.step-list li::before {
    content: counter(step);
    flex-shrink: 0;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    background: var(--primary-light);
    color: var(--primary-dark);
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.tip-card {
    border-left: 4px solid;
    padding: var(--space-md) var(--space-lg);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    margin-bottom: var(--space-md);
}

.tip-card.pink { border-color: var(--primary); background: rgba(248, 165, 184, 0.06); }
.tip-card.blue { border-color: var(--secondary); background: rgba(123, 200, 246, 0.06); }
.tip-card.purple { border-color: var(--accent); background: rgba(201, 160, 220, 0.06); }
.tip-card.gold { border-color: var(--gold); background: rgba(245, 215, 110, 0.08); }

.faq-item {
    border-bottom: 1px solid var(--border);
    padding: var(--space-lg) 0;
}

.faq-item:last-child { border-bottom: none; }

.faq-item h3 {
    font-size: 1.05rem;
    margin-bottom: var(--space-xs);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-item p {
    color: var(--text-medium);
    margin: var(--space-sm) 0 0;
    font-size: 0.93rem;
}

footer {
    text-align: center;
    padding: var(--space-2xl) var(--space-lg);
    color: var(--text-light);
    font-size: 0.85rem;
    border-top: 1px solid var(--border);
    margin-top: var(--space-2xl);
}

footer a { color: var(--text-light); }
footer a:hover { color: var(--primary-dark); }

@media (max-width: 768px) {
    .grid-2, .grid-3 { grid-template-columns: 1fr; }
    .hero h1 { font-size: 1.6rem; }
    .btn-group { flex-direction: column; align-items: center; }
    .btn { width: 100%; justify-content: center; }
    .header { padding: 0 var(--space-sm); }
    .nav a { padding: 0.3rem 0.7rem; font-size: 0.82rem; }
}

@media (max-width: 480px) {
    .container { width: 100%; padding: var(--space-md); }
    .card { padding: var(--space-md); }
}