/* ===========================================
   Design Tokens — #6eb1b3 editorial theme
   =========================================== */
:root {
    --bg-page: #f2f5f4;
    --bg-white: #ffffff;
    --bg-accent: #6eb1b3;
    --bg-accent-soft: #eef6f6;
    --bg-warm: #faf8f5;
    --text-primary: #1a2a2e;
    --text-secondary: #4a5f65;
    --text-muted: #8a9ea6;
    --text-white: #ffffff;
    --accent: #6eb1b3;
    --accent-light: #8ec5c7;
    --accent-dark: #5a9a9c;
    --warm-accent: #e07c3e;
    --warm-accent-soft: #fdf3ec;
    --warm-accent-dark: #c96a30;
    --line-color: #dce5e2;
    --container-width: 820px;
    --font-heading: 'Montserrat', sans-serif;
    --font-body: 'Noto Sans JP', sans-serif;
    --radius: 8px;
    --shadow-sm: 0 2px 12px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.08);
}

/* ===========================================
   Reset & Base
   =========================================== */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 64px;
}

body {
    font-family: var(--font-body);
    background: var(--bg-page);
    color: var(--text-primary);
    line-height: 1.9;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

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

img {
    max-width: 100%;
    display: block;
}

strong {
    font-weight: 600;
}

/* ===========================================
   App Container (narrow column)
   =========================================== */
.app-container {
    max-width: var(--container-width);
    margin: 0 auto;
    background: var(--bg-white);
    min-height: 100vh;
    box-shadow: var(--shadow-md);
}

/* ===========================================
   Navigation
   =========================================== */
.site-nav {
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    gap: 1.8rem;
    padding: 0.8rem 2rem;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--line-color);
}

.nav-logo {
    font-family: var(--font-heading);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.03em;
    color: var(--accent);
    margin-right: auto;
}

.site-nav a {
    font-family: var(--font-body);
    font-size: 0.72rem;
    color: var(--text-muted);
    letter-spacing: 0.04em;
    transition: color 0.2s;
    font-weight: 400;
}

.site-nav a:hover,
.site-nav a.active {
    color: var(--accent);
}

/* ===========================================
   Hero — Full impact
   =========================================== */
.hero {
    position: relative;
    overflow: hidden;
}

.hero-visual {
    width: 100%;
    height: 320px;
    object-fit: cover;
}

.hero-body {
    padding: 3rem 2.5rem 2.5rem;
}

.hero-logo {
    font-family: var(--font-heading);
    font-size: clamp(2.2rem, 7vw, 3.2rem);
    font-weight: 800;
    color: var(--accent);
    letter-spacing: -0.01em;
    line-height: 1.15;
    margin-bottom: 0.6rem;
}

.hero-sub {
    font-size: 1rem;
    font-weight: 500;
    color: var(--accent-dark);
    letter-spacing: 0.1em;
    margin-bottom: 2rem;
}

.hero-lead {
    font-size: 1.6rem;
    font-weight: 700;
    line-height: 1.7;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
}

.hero-lead .highlight {
    background: linear-gradient(transparent 60%, rgba(110, 177, 179, 0.25) 60%);
    padding: 0 2px;
}

.hero-desc {
    font-size: 0.88rem;
    line-height: 2.2;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    font-weight: 300;
}

.hero-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 2rem;
}

.chip {
    padding: 0.35rem 1rem;
    background: var(--bg-accent-soft);
    border: 1px solid rgba(110, 177, 179, 0.2);
    border-radius: 100px;
    font-size: 0.78rem;
    color: var(--accent-dark);
}

.cta-btn {
    display: inline-block;
    padding: 1rem 2.5rem;
    background: var(--warm-accent);
    color: #fff;
    font-size: 0.88rem;
    font-weight: 600;
    border-radius: 100px;
    letter-spacing: 0.04em;
    transition: background 0.3s, transform 0.2s;
    box-shadow: 0 4px 16px rgba(224, 124, 62, 0.3);
}

.cta-btn:hover {
    background: var(--warm-accent-dark);
    transform: translateY(-1px);
    color: #fff;
}

/* ===========================================
   Full-width accent band
   =========================================== */
.accent-band {
    background: var(--accent);
    color: var(--text-white);
    padding: 3rem 2.5rem;
    text-align: center;
}

.accent-band h2 {
    font-size: clamp(1.3rem, 4vw, 1.8rem);
    font-weight: 700;
    line-height: 1.6;
    margin-bottom: 0.75rem;
}

.accent-band p {
    font-size: 0.88rem;
    line-height: 2;
    opacity: 0.9;
    font-weight: 300;
    max-width: 560px;
    margin: 0 auto;
}

/* ===========================================
   Numbered Section — editorial layout
   =========================================== */
.numbered-section {
    padding: 4rem 2.5rem;
    border-bottom: 1px solid var(--line-color);
}

.numbered-section:last-of-type {
    border-bottom: none;
}

.section-number {
    font-family: var(--font-heading);
    font-size: 4.5rem;
    font-weight: 800;
    color: rgba(110, 177, 179, 0.12);
    line-height: 1;
    margin-bottom: -0.5rem;
    letter-spacing: -0.02em;
}

.section-heading {
    font-size: clamp(1.3rem, 3.5vw, 1.7rem);
    font-weight: 700;
    line-height: 1.6;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
}

.section-heading .accent-text {
    color: var(--accent);
}

.section-text {
    font-size: 0.88rem;
    line-height: 2.2;
    color: var(--text-secondary);
    font-weight: 300;
    margin-bottom: 1.5rem;
}

/* 2-column layout (image + text) */
.two-col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
    align-items: center;
}

.two-col.reversed {
    direction: rtl;
}

.two-col.reversed>* {
    direction: ltr;
}

.two-col-img {
    width: 100%;
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
}

/* list with accent bullets */
.feature-list {
    list-style: none;
    padding: 0;
}

.feature-list li {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 0.6rem 0;
    font-size: 0.88rem;
    line-height: 1.8;
    color: var(--text-secondary);
}

.feature-list li .dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent);
    flex-shrink: 0;
    margin-top: 0.5rem;
}

/* ===========================================
   Worry → Solution (editorial version)
   =========================================== */
.worry-section {
    padding: 3.5rem 2.5rem;
    background: var(--bg-warm);
    border-bottom: 1px solid var(--line-color);
}

.worry-heading {
    font-size: clamp(1.3rem, 3.5vw, 1.7rem);
    font-weight: 700;
    line-height: 1.6;
    color: var(--text-primary);
    margin-bottom: 2rem;
    text-align: center;
}

.worry-items {
    max-width: 520px;
    margin: 0 auto 2rem;
    list-style: none;
    padding: 0;
}

.worry-items li {
    font-size: 0.92rem;
    padding: 0.7rem 0;
    color: var(--text-secondary);
    border-bottom: 1px dashed var(--line-color);
    padding-left: 1.2rem;
    position: relative;
}

.worry-items li::before {
    content: '—';
    position: absolute;
    left: 0;
    color: var(--text-muted);
}

.worry-arrow {
    text-align: center;
    margin: 1rem 0;
}

.worry-arrow svg {
    width: 36px;
    height: 36px;
    color: var(--accent);
}

.solution-block {
    max-width: 520px;
    margin: 0 auto;
    background: var(--bg-white);
    border-left: 4px solid var(--accent);
    padding: 1.5rem 2rem;
    border-radius: 0 var(--radius) var(--radius) 0;
    box-shadow: var(--shadow-sm);
}

.solution-block h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--accent-dark);
    margin-bottom: 0.75rem;
}

.solution-list {
    list-style: none;
    padding: 0;
}

.solution-list li {
    font-size: 0.85rem;
    padding: 0.4rem 0;
    color: var(--text-secondary);
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    line-height: 1.8;
}

.solution-list li svg {
    width: 16px;
    height: 16px;
    color: var(--accent);
    flex-shrink: 0;
    margin-top: 0.35rem;
}

/* ===========================================
   Instructor (editorial)
   =========================================== */
.instructor-row {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 1.5rem;
    align-items: start;
    margin-bottom: 2rem;
}

.instructor-photo {
    width: 100%;
    aspect-ratio: 3/4;
    object-fit: cover;
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
}

.instructor-role-label {
    font-family: var(--font-heading);
    font-size: 0.65rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 0.25rem;
}

.instructor-name {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.instructor-bio {
    font-size: 0.82rem;
    line-height: 2;
    color: var(--text-secondary);
    font-weight: 300;
    margin-bottom: 0.5rem;
}

.instructor-bio:last-child {
    margin-bottom: 0;
}

/* ===========================================
   Curriculum tabs
   =========================================== */
.tab-bar {
    display: flex;
    border-bottom: 2px solid var(--line-color);
    margin-bottom: 2rem;
}

.tab-btn {
    flex: 1;
    padding: 0.9rem;
    text-align: center;
    background: none;
    border: none;
    font-family: var(--font-body);
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--text-muted);
    cursor: pointer;
    position: relative;
    transition: color 0.2s;
}

.tab-btn::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--accent);
    transform: scaleX(0);
    transition: transform 0.3s;
}

.tab-btn.active {
    color: var(--accent);
    font-weight: 600;
}

.tab-btn.active::after {
    transform: scaleX(1);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeUp 0.35s ease;
}

@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.step-row {
    display: grid;
    grid-template-columns: 48px 1fr;
    gap: 1rem;
    padding: 1.25rem 0;
    border-bottom: 1px solid var(--line-color);
    align-items: start;
}

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

.step-badge {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--bg-accent-soft);
    border: 2px solid var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-heading);
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--accent);
    flex-shrink: 0;
}

.step-title {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 0.3rem;
}

.step-desc {
    font-size: 0.82rem;
    line-height: 1.9;
    color: var(--text-secondary);
    font-weight: 300;
}

/* ===========================================
   Pricing
   =========================================== */
.price-table {
    width: 100%;
    border-collapse: collapse;
}

.price-table tr {
    border-bottom: 1px solid var(--line-color);
}

.price-table td {
    padding: 1rem 0;
    font-size: 0.9rem;
}

.price-table td:first-child {
    color: var(--text-secondary);
}

.price-table td:last-child {
    text-align: right;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1.05rem;
    color: var(--text-primary);
}

.price-note {
    margin-top: 1.5rem;
    padding: 1rem 1.25rem;
    background: var(--bg-accent-soft);
    border-left: 4px solid var(--accent);
    border-radius: 0 var(--radius) var(--radius) 0;
    font-size: 0.85rem;
    color: var(--accent-dark);
    font-weight: 400;
}

.enrollment-badge {
    display: inline-block;
    padding: 0.3rem 0.9rem;
    background: var(--warm-accent);
    color: #fff;
    font-size: 0.72rem;
    font-weight: 600;
    border-radius: 100px;
    margin-bottom: 1.5rem;
}

/* ===========================================
   Timeline
   =========================================== */
.timeline {
    max-width: 560px;
    margin: 0 auto;
}

.timeline-item {
    display: grid;
    grid-template-columns: 52px 1fr;
    gap: 1.25rem;
    padding: 1.5rem 0;
    border-bottom: 1px solid var(--line-color);
}

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

.timeline-dot {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    background: var(--warm-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-heading);
    font-size: 0.75rem;
    font-weight: 700;
    color: #fff;
    flex-shrink: 0;
}

.timeline-body {
    min-width: 0;
}

.timeline-label {
    font-family: var(--font-heading);
    font-size: 0.65rem;
    letter-spacing: 0.1em;
    color: var(--warm-accent);
    margin-bottom: 0.2rem;
}

.timeline-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.4rem;
}

.timeline-desc {
    font-size: 0.82rem;
    line-height: 1.9;
    color: var(--text-secondary);
    font-weight: 300;
}

/* ===========================================
   Studio strip
   =========================================== */
.studio-strip {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
}

.studio-strip img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

/* ===========================================
   Footer
   =========================================== */
.footer {
    text-align: center;
    padding: 2.5rem 2rem;
    border-top: 1px solid var(--line-color);
}

.footer-logo {
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 0.75rem;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    list-style: none;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.footer-links a {
    font-size: 0.72rem;
    color: var(--text-muted);
}

.copyright {
    font-size: 0.65rem;
    color: var(--text-muted);
}

/* ===========================================
   Scroll animation
   =========================================== */
.js-fade-up {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.js-fade-up.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===========================================
   Responsive
   =========================================== */
@media (max-width: 767px) {
    .app-container {
        box-shadow: none;
    }

    .site-nav {
        gap: 1rem;
        padding: 0.7rem 1rem;
    }

    .nav-logo {
        font-size: 0.7rem;
    }

    .site-nav a {
        font-size: 0.62rem;
    }

    .hero-body {
        padding: 2rem 1.5rem;
    }

    .hero-visual {
        height: 220px;
    }

    .numbered-section {
        padding: 3rem 1.5rem;
    }

    .two-col {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .two-col.reversed {
        direction: ltr;
    }

    .section-number {
        font-size: 3rem;
    }

    .worry-section {
        padding: 2.5rem 1.5rem;
    }

    .accent-band {
        padding: 2.5rem 1.5rem;
    }

    .instructor-row {
        grid-template-columns: 140px 1fr;
        gap: 1rem;
    }

    .tab-btn {
        font-size: 0.8rem;
        padding: 0.7rem 0.5rem;
    }

    .timeline-item {
        grid-template-columns: 44px 1fr;
        gap: 1rem;
    }

    .timeline-dot {
        width: 44px;
        height: 44px;
        font-size: 0.65rem;
    }

    .studio-strip img {
        height: 150px;
    }
}