:root {
    --max-width: 1200px;
    --page-padding: 32px;
    --section-space: clamp(64px, 8vw, 100px);
    --bg: #f3f6f2;
    --surface: #ffffff;
    --surface-soft: #f6faf6;
    --surface-dark: #0f2419;
    --text: #122119;
    --text-soft: #5b6a60;
    --text-on-dark: rgba(255, 255, 255, 0.92);
    --line: rgba(18, 33, 25, 0.08);
    --line-dark: rgba(255, 255, 255, 0.12);
    --accent: #1c6a49;
    --accent-strong: #0e422d;
    --accent-soft: rgba(28, 106, 73, 0.08);
    --shadow: 0 24px 64px rgba(9, 26, 18, 0.08);
    --shadow-hover: 0 28px 72px rgba(9, 26, 18, 0.12);
    --radius: 20px;
    --radius-sm: 10px;
    --fs-hero: clamp(40px, 5.5vw, 68px);
    --fs-h2: clamp(28px, 3.5vw, 44px);
    --fs-h3: clamp(19px, 2vw, 24px);
    --fs-body: clamp(15px, 1.1vw, 17px);
    --fs-lead: clamp(16px, 1.3vw, 19px);
    --fs-small: clamp(13px, 0.9vw, 14px);
    --fs-eyebrow: clamp(0.8rem, 0.9vw, 0.92rem);
    --fs-stat: clamp(36px, 4.5vw, 52px);
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 100px;
}

body {
    margin: 0;
    font-family: "Noto Sans JP", sans-serif;
    font-size: var(--fs-body);
    line-height: 1.8;
    color: var(--text);
    background:
        radial-gradient(circle at top left, rgba(86, 139, 105, 0.1), transparent 26%),
        linear-gradient(180deg, #edf3ee 0%, #f8faf7 54%, #edf3ed 100%);
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button, input, textarea { font: inherit; }

.shell {
    width: min(calc(100% - (var(--page-padding) * 2)), var(--max-width));
    margin: 0 auto;
}

/* ── Header ── */
.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(243, 246, 242, 0.82);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid transparent;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.site-header.scrolled {
    border-color: var(--line);
    box-shadow: 0 10px 28px rgba(9, 26, 18, 0.06);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 82px;
    gap: 24px;
}

.brand, .desktop-nav, .header-actions {
    display: flex;
    align-items: center;
}

.brand {
    gap: 10px;
    font-family: "Inter", sans-serif;
    font-weight: 800;
}

.brand-mark { font-size: 1.55rem; color: var(--accent); }
.brand-text { font-size: 1rem; }

.desktop-nav { gap: 28px; }
.desktop-nav a {
    color: var(--text-soft);
    font-weight: 500;
    font-size: var(--fs-small);
    transition: color 0.2s ease;
}
.desktop-nav a:hover { color: var(--text); }

.header-actions { gap: 12px; }

.language-switch {
    display: inline-flex;
    padding: 4px;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.84);
}

.language-button {
    min-width: 46px;
    height: 36px;
    border: 0;
    border-radius: 999px;
    background: transparent;
    color: var(--text-soft);
    font-family: "Inter", sans-serif;
    font-weight: 700;
    cursor: pointer;
    transition: background 0.2s ease, color 0.2s ease;
}

.language-button.is-active {
    background: var(--accent);
    color: #fff;
}

.header-cta, .button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    font-family: "Inter", sans-serif;
    font-weight: 700;
    font-size: var(--fs-body);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.header-cta {
    min-height: 44px;
    padding: 0 18px;
    color: #fff;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-strong) 100%);
    box-shadow: 0 14px 28px rgba(14, 66, 45, 0.18);
}

.button {
    min-height: 54px;
    padding: 0 28px;
    border: 1px solid transparent;
}

.button:hover, .button:focus-visible,
.header-cta:hover, .header-cta:focus-visible {
    transform: translateY(-2px);
}

.button-primary {
    color: #fff;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-strong) 100%);
    box-shadow: 0 14px 30px rgba(14, 66, 45, 0.18);
}

.button-secondary {
    background: rgba(255, 255, 255, 0.86);
    border-color: var(--line);
}

.button-accent {
    width: 100%;
    color: #fff;
    background: linear-gradient(135deg, #4a956d 0%, var(--accent) 100%);
    box-shadow: 0 10px 24px rgba(14, 66, 45, 0.22);
    margin-top: 24px;
}

.menu-toggle {
    display: none;
    width: 44px;
    height: 44px;
    padding: 0;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.8);
    cursor: pointer;
    flex-direction: column;
    justify-content: center;
    gap: 4px;
}

.menu-toggle span {
    width: 18px;
    height: 2px;
    margin: 0 auto;
    border-radius: 999px;
    background: var(--text);
}

.mobile-nav {
    display: none;
    flex-direction: column;
    gap: 8px;
    padding: 0 var(--page-padding) 20px;
    border-top: 1px solid var(--line);
}

.mobile-nav a {
    padding: 12px 0;
    color: var(--text-soft);
    font-size: var(--fs-body);
}

/* ── Sections ── */
.section { padding: var(--section-space) 0; }

.hero {
    position: relative;
    overflow: hidden;
    padding: 56px 0 80px;
}

.hero-backdrop {
    position: absolute;
    inset: 0;
    pointer-events: none;
    background:
        radial-gradient(circle at 16% 16%, rgba(91, 147, 112, 0.14), transparent 28%),
        radial-gradient(circle at 84% 14%, rgba(12, 52, 34, 0.1), transparent 24%);
}

.hero-panel,
.info-card,
.panel,
.benefit-card,
.feature-card,
.testimonial-card,
.contact-copy,
.contact-form {
    background: var(--surface);
    border: 1px solid rgba(255, 255, 255, 0.8);
    box-shadow: var(--shadow);
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.info-card:hover,
.benefit-card:hover,
.panel:hover,
.feature-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
}

.hero-panel {
    position: relative;
    padding: 52px;
    border-radius: 28px;
}

.eyebrow {
    margin: 0 0 14px;
    color: var(--accent);
    font-family: "Inter", sans-serif;
    font-size: var(--fs-eyebrow);
    font-weight: 700;
    letter-spacing: 0.08em;
}

h1, h2, h3, h4, strong, p { margin: 0; }

h1, h2, h3, h4,
.brand, .button, .header-cta,
.info-value, .fact-card strong,
.benefit-number, .bar-copy strong {
    font-family: "Inter", sans-serif;
}

h1 {
    font-size: var(--fs-hero);
    line-height: 1.08;
    font-weight: 800;
    letter-spacing: -0.02em;
}

h2 {
    font-size: var(--fs-h2);
    line-height: 1.15;
    font-weight: 800;
}

h3 {
    font-size: var(--fs-h3);
    line-height: 1.3;
    font-weight: 700;
}

.hero-grid, .twelve-grid {
    display: grid;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 20px;
}

.hero-copy { grid-column: span 7; }

.hero-facts {
    grid-column: span 5;
    display: grid;
    gap: 12px;
}

.hero-subtitle {
    margin-top: 20px;
    font-size: clamp(20px, 2.2vw, 26px);
    color: var(--text);
    font-weight: 500;
    line-height: 1.5;
}

.hero-text,
.section-lead,
.section-note,
.video-copy p,
.info-card p,
.panel-head p,
.benefit-card p,
.form-note,
.contact-points span {
    color: var(--text-soft);
}

.hero-text {
    margin-top: 20px;
    max-width: 40rem;
    font-size: var(--fs-lead);
    line-height: 1.9;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 32px;
}

.fact-card {
    padding: 20px;
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.78);
    border: 1px solid var(--line);
}

.fact-label, .info-label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-soft);
    font-size: var(--fs-small);
}

.fact-card strong {
    font-size: var(--fs-body);
    line-height: 1.4;
}

.section-heading { margin-bottom: 36px; }

.section-heading.center {
    text-align: center;
    max-width: 640px;
    margin-left: auto;
    margin-right: auto;
}

.section-lead {
    max-width: 760px;
    margin-top: 16px;
    font-size: var(--fs-lead);
    line-height: 1.85;
}

.section-heading.center .section-lead {
    margin-left: auto;
    margin-right: auto;
}

.section-note {
    margin-top: 24px;
    font-size: var(--fs-small);
}

/* ── Video ── */
.video-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
}

.video-card {
    padding: 14px;
    border-radius: 20px;
    background: var(--surface);
    border: 1px solid rgba(255, 255, 255, 0.8);
    box-shadow: var(--shadow);
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.video-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
}

.video-shell {
    aspect-ratio: 9 / 16;
    overflow: hidden;
    border-radius: 16px;
    background: #10231a;
    position: relative;
}

.video-shell video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.video-poster {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    background: #10231a;
    z-index: 2;
    transition: opacity 0.3s ease;
}

.video-poster img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.7;
}

.video-poster.is-hidden {
    opacity: 0;
    pointer-events: none;
}

.play-button {
    position: relative;
    z-index: 1;
    border: 0;
    background: none;
    padding: 0;
    cursor: pointer;
    transition: transform 0.2s ease;
}

.play-button:hover {
    transform: scale(1.1);
}

.video-copy {
    padding-top: 14px;
}

.video-copy h3 { margin-bottom: 6px; }

.section-cta {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    justify-content: center;
    margin-top: 40px;
}

/* ── Contrast ── */
.contrast-section {
    background: linear-gradient(180deg, rgba(228, 238, 230, 0.86) 0%, rgba(245, 248, 244, 0.7) 100%);
}

/* ── Grid Spans ── */
.span-4 { grid-column: span 4; }
.span-5 { grid-column: span 5; }
.span-6 { grid-column: span 6; }
.span-7 { grid-column: span 7; }

/* ── Cards ── */
.info-card, .benefit-card, .panel, .feature-card, .testimonial-card {
    border-radius: var(--radius);
}

.info-card, .benefit-card, .panel { padding: 32px; }

.info-value {
    display: block;
    margin-bottom: 10px;
    font-size: var(--fs-stat);
    line-height: 1;
    font-weight: 800;
}

.panel-head { margin-bottom: 24px; }

.bar-list { display: grid; gap: 18px; }
.bar-item { display: grid; gap: 8px; }

.bar-copy {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 12px;
}

.bar-copy span { font-size: var(--fs-body); }
.bar-copy strong { font-size: var(--fs-body); }

.bar-track {
    height: 10px;
    border-radius: 999px;
    background: #e5ece7;
    overflow: hidden;
}

.bar-track span {
    display: block;
    height: 100%;
    border-radius: inherit;
    background: linear-gradient(90deg, var(--accent) 0%, #4a956d 100%);
}

/* ── Benefit Layout (merged) ── */
.benefit-layout {
    display: grid;
    grid-template-columns: 7fr 5fr;
    gap: 20px;
    align-items: start;
}

.benefit-main { display: grid; gap: 16px; }

.benefit-card {
    position: relative;
    overflow: hidden;
}

.benefit-number {
    display: inline-block;
    margin-bottom: 14px;
    color: var(--accent);
    font-size: var(--fs-eyebrow);
    font-weight: 800;
    letter-spacing: 0.14em;
}

.benefit-card h3 { margin-bottom: 10px; }

.fit-panel {
    background: linear-gradient(180deg, rgba(15, 36, 25, 0.98) 0%, rgba(18, 45, 31, 0.96) 100%);
    border-radius: var(--radius);
    padding: 36px 32px;
}

.fit-panel h3 {
    color: var(--text-on-dark);
    font-size: var(--fs-h3);
    margin-bottom: 28px;
}

.fit-list { display: grid; gap: 12px; }

.fit-item {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    padding: 16px 18px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 12px;
}

.fit-icon {
    flex-shrink: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    color: #6cc48f;
}

.fit-item p {
    font-weight: 500;
    color: rgba(255, 255, 255, 0.88);
    font-size: var(--fs-body);
    line-height: 1.6;
}

/* ── Testimonials ── */
.testimonial-card {
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.testimonial-body {
    padding: 36px;
    display: flex;
    flex-direction: column;
    gap: 14px;
    position: relative;
}

.testimonial-quote-mark {
    font-family: Georgia, "Times New Roman", serif;
    font-size: clamp(64px, 8vw, 88px);
    line-height: 0.8;
    color: rgba(28, 106, 73, 0.08);
    position: absolute;
    top: 16px;
    right: 28px;
    pointer-events: none;
    user-select: none;
}

.testimonial-company {
    display: inline-block;
    padding: 5px 14px;
    border-radius: 999px;
    background: var(--accent-soft);
    color: var(--accent);
    font-size: var(--fs-small);
    font-weight: 700;
    width: fit-content;
}

.testimonial-highlight {
    font-size: clamp(17px, 1.6vw, 20px);
    font-weight: 700;
    line-height: 1.6;
    color: var(--text);
    padding-left: 18px;
    border-left: 3px solid var(--accent);
    margin: 4px 0;
}

.testimonial-body > p:not(.testimonial-highlight) {
    color: var(--text-soft);
    line-height: 1.9;
    font-size: var(--fs-body);
}

/* ── Results ── */
.feature-card {
    position: relative;
    overflow: hidden;
    padding: 28px;
}

.ratio-16x9 { aspect-ratio: 16 / 9; }

.feature-image {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
}

.feature-image-one {
    background:
        linear-gradient(180deg, rgba(10, 28, 19, 0.18) 0%, rgba(10, 28, 19, 0.58) 100%),
        url("assets/images/venue.png") center/cover no-repeat;
}

.feature-overlay {
    position: absolute;
    inset: auto 28px 28px 28px;
    z-index: 1;
}

.feature-overlay .eyebrow,
.feature-overlay h2 { color: #fff; }

.feature-overlay h2 { font-size: clamp(18px, 2vw, 24px); }

.dark-card {
    display: grid;
    align-content: center;
    background: linear-gradient(180deg, rgba(15, 36, 25, 0.98) 0%, rgba(18, 45, 31, 0.95) 100%);
    border-color: var(--line-dark);
}

.dark-card .mini-stats span,
.dark-card .mini-stats strong { color: var(--text-on-dark); }

.mini-stats { display: grid; gap: 18px; }

.mini-stats div {
    padding-top: 16px;
    border-top: 1px solid var(--line-dark);
}

.mini-stats div:first-child {
    border-top: 0;
    padding-top: 0;
}

.mini-stats span {
    display: block;
    margin-bottom: 6px;
    font-size: var(--fs-small);
}

.mini-stats strong {
    font-family: "Inter", sans-serif;
    font-size: clamp(14px, 1.2vw, 17px);
    line-height: 1.5;
}

/* ── Contact ── */
.contact-section {
    padding-bottom: clamp(80px, 10vw, 120px);
}

.contact-layout {
    display: grid;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 20px;
}

.contact-copy {
    grid-column: span 4;
    background: linear-gradient(180deg, #e6f0e8 0%, #dcebe0 100%);
    border-radius: var(--radius);
    padding: 32px;
}

.contact-points {
    display: grid;
    gap: 10px;
    margin-top: 24px;
}

.contact-form {
    grid-column: span 8;
    border-radius: var(--radius);
    padding: 32px;
    display: grid;
    gap: 18px;
}

.contact-form label {
    display: grid;
    gap: 6px;
}

.contact-form label > span:first-child {
    font-weight: 700;
    font-size: var(--fs-body);
}

.contact-form label em {
    color: #c43c3c;
    font-style: normal;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: #fbfdfb;
    color: var(--text);
    font-size: var(--fs-body);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: rgba(28, 106, 73, 0.38);
    box-shadow: 0 0 0 4px rgba(28, 106, 73, 0.08);
}

.contact-form input.is-invalid,
.contact-form textarea.is-invalid {
    border-color: #c43c3c;
    box-shadow: 0 0 0 4px rgba(196, 60, 60, 0.06);
}

.contact-form textarea {
    min-height: 140px;
    resize: vertical;
}

.submit-button { width: 100%; }

.submit-button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

.field-error {
    display: block;
    min-height: 0;
    color: #a33737;
    font-size: var(--fs-small);
    line-height: 1.4;
}

.field-error:empty { display: none; }

.form-note {
    min-height: 1.5em;
    text-align: center;
}

.form-note:empty { display: none; }
.form-note.success { color: var(--accent); font-weight: 500; }
.form-note.error { color: #a33737; }

.privacy-notice {
    font-size: clamp(11px, 0.8vw, 12.5px);
    line-height: 1.75;
    color: var(--text-soft);
    padding: 16px 18px;
    background: rgba(0, 0, 0, 0.02);
    border-radius: 10px;
    border: 1px solid var(--line);
}

/* ── Footer ── */
.site-footer { padding: 0 0 32px; }

.footer-inner {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    color: var(--text-soft);
    font-size: var(--fs-small);
}

/* ── Responsive ── */
@media (max-width: 1024px) {
    .hero-copy, .hero-facts,
    .span-4, .span-5, .span-6, .span-7,
    .contact-copy, .contact-form {
        grid-column: span 12;
    }

    .video-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .video-grid .video-card:last-child {
        grid-column: 1 / -1;
        max-width: 50%;
        justify-self: center;
    }

    .benefit-layout {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 840px) {
    .desktop-nav, .header-cta { display: none; }
    .menu-toggle { display: flex; }
    .mobile-nav.is-open { display: flex; }

    .hero-panel, .info-card, .panel,
    .benefit-card, .feature-card { padding: 28px; }
    .testimonial-body { padding: 28px; }
    .fit-panel { padding: 28px 24px; }
    .contact-copy, .contact-form { padding: 28px; }
}

@media (max-width: 640px) {
    :root { --page-padding: 16px; }

    .shell {
        width: min(calc(100% - 24px), var(--max-width));
    }

    .video-grid { grid-template-columns: 1fr; }

    .video-grid .video-card:last-child {
        max-width: 100%;
    }

    .footer-inner { flex-direction: column; }

    .info-value { font-size: clamp(32px, 8vw, 40px); }

    .hero-panel { padding: 28px 22px; }

    .fit-item { padding: 14px; }

    .contact-form { padding: 24px 20px; }
}