:root {
    /* SemanticColor -> CSS vars */
    --brand: #007D4B;
    --white: #FDFDFC;
    --black: #021209;
    --secondary: #AFB3B1;
    --tertialy: #F4F4F3;
    --selected: #EFEFEE;
    --unselected: #EBEBEA;
    --disable: #D1D4D2;
    --warning: #EB883D;
    --danger: #F3553D;

    --text-brand: #007D4B;
    --text-primary: #021209;
    --text-white: #FDFDFC;
    --text-secondary: #8C938F;
    --text-disable: #D1D4D2;

    --bg: #F9F9F9;
    /* backgroundPrimary */

    --radius-xl: 22px;
    --radius-lg: 16px;
    --radius-md: 12px;

    --shadow-soft: 0 18px 40px rgba(2, 18, 9, 0.08);
    --shadow-card: 0 10px 24px rgba(2, 18, 9, 0.08);

    --max: 1120px;
}

* {
    box-sizing: border-box;
}

html,
body {
    height: 100%;
}

body {
    margin: 0;
    font-family: ui-sans-serif, system-ui, -apple-system, "SF Pro Display", "Hiragino Sans", "Noto Sans JP", Segoe UI, Roboto, "Helvetica Neue", Arial;
    background: var(--bg);
    color: var(--text-primary);
    line-height: 1.65;
    overflow-x: hidden;
}

a {
    color: inherit;
    text-decoration: none;
}

a:hover {
    opacity: .9;
}

.container {
    width: min(var(--max), calc(100% - 40px));
    margin: 0 auto;
}

.nav {
    position: sticky;
    top: 0;
    z-index: 50;
    backdrop-filter: blur(10px);
    background: rgba(249, 249, 249, 0.75);
    border-bottom: 1px solid rgba(2, 18, 9, 0.08);
}

.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 0;
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 750;
    letter-spacing: .2px;
}

.brand-badge {
    width: 34px;
    height: 34px;
    border-radius: 10px;
    background: transparent;
    /* box-shadow: 0 12px 24px rgba(0, 125, 75, 0.25); Remove old strong shadow */
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    /* Softer shadow for icon */
    position: relative;
    overflow: hidden;
    object-fit: cover;
}

/* Removed .brand-badge::after */

.nav-links {
    display: flex;
    align-items: center;
    gap: 10px;
}

.nav-link {
    padding: 10px 12px;
    border-radius: 12px;
    color: var(--text-secondary);
    transition: background .2s ease, color .2s ease, transform .2s ease;
}

.nav-link:hover {
    background: rgba(0, 125, 75, 0.08);
    color: var(--text-primary);
}

.nav-link.active {
    background: rgba(0, 125, 75, 0.12);
    color: var(--text-brand);
}

.cta {
    display: flex;
    gap: 10px;
    align-items: center;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 12px 14px;
    border-radius: 14px;
    border: 1px solid rgba(2, 18, 9, 0.10);
    background: rgba(253, 253, 252, 0.75);
    box-shadow: 0 10px 20px rgba(2, 18, 9, 0.06);
    transition: transform .18s ease, box-shadow .18s ease, background .18s ease;
    user-select: none;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 18px 28px rgba(2, 18, 9, 0.10);
}

.btn-primary {
    border: 1px solid rgba(0, 125, 75, 0.25);
    background: linear-gradient(135deg, rgba(0, 125, 75, 1), rgba(0, 125, 75, .78));
    color: var(--text-white);
}

.btn-ghost {
    background: transparent;
    border: 1px solid rgba(2, 18, 9, 0.10);
    color: var(--text-primary);
}

.hero {
    position: relative;
    padding: 66px 0 26px;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 26px;
    align-items: stretch;
}

.hero-card {
    position: relative;
    border-radius: var(--radius-xl);
    background: rgba(253, 253, 252, 0.78);
    border: 1px solid rgba(2, 18, 9, 0.08);
    box-shadow: var(--shadow-soft);
    overflow: hidden;
}

.hero-card-inner {
    padding: 28px 28px 22px;
}

.hero-icon {
    width: 64px;
    height: 64px;
    border-radius: 16px;
    margin-bottom: 20px;
    display: block;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.06);
}

.kicker {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    border-radius: 999px;
    background: rgba(0, 125, 75, 0.10);
    border: 1px solid rgba(0, 125, 75, 0.18);
    color: var(--text-brand);
    font-weight: 700;
    font-size: 13px;
}

.h1 {
    margin: 14px 0 12px;
    font-size: clamp(28px, 3.2vw, 44px);
    line-height: 1.1;
    letter-spacing: -0.5px;
}

.sub {
    color: var(--text-secondary);
    font-size: 15.5px;
    margin: 0 0 18px;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.hero-side {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.mini-card {
    border-radius: var(--radius-xl);
    background: rgba(253, 253, 252, 0.78);
    border: 1px solid rgba(2, 18, 9, 0.08);
    box-shadow: var(--shadow-card);
    padding: 16px 16px;
    position: relative;
    overflow: hidden;
}

.mini-title {
    font-weight: 760;
    margin: 0 0 6px;
}

.mini-desc {
    margin: 0;
    font-size: 14px;
    color: var(--text-secondary);
}

.pill-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 10px;
}

.pill {
    padding: 7px 10px;
    border-radius: 999px;
    background: rgba(2, 18, 9, 0.04);
    border: 1px solid rgba(2, 18, 9, 0.08);
    color: var(--text-secondary);
    font-size: 12.5px;
}

.section {
    padding: 22px 0 40px;
}

.grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 14px;
}

.card {
    grid-column: span 6;
    border-radius: var(--radius-xl);
    background: rgba(253, 253, 252, 0.78);
    border: 1px solid rgba(2, 18, 9, 0.08);
    box-shadow: var(--shadow-card);
    padding: 18px 18px;
    overflow: hidden;
    position: relative;
}

.card h3 {
    margin: 0 0 6px;
    font-size: 16px;
    letter-spacing: -0.2px;
}

.card p {
    margin: 0;
    color: var(--text-secondary);
    font-size: 14.5px;
}

.list {
    margin: 10px 0 0;
    padding-left: 18px;
    color: var(--text-secondary);
    font-size: 14.5px;
}

.list li {
    margin: 6px 0;
}

.divider {
    height: 1px;
    background: rgba(2, 18, 9, 0.08);
    margin: 18px 0;
}

.doc {
    padding: 28px 0 56px;
}

.doc-wrap {
    border-radius: var(--radius-xl);
    background: rgba(253, 253, 252, 0.78);
    border: 1px solid rgba(2, 18, 9, 0.08);
    box-shadow: var(--shadow-soft);
    padding: 24px 24px;
}

.doc h1 {
    margin: 0 0 8px;
    font-size: 26px;
    letter-spacing: -0.4px;
}

.doc .meta {
    color: var(--text-secondary);
    font-size: 13px;
    margin-bottom: 18px;
}

.doc h2 {
    margin: 22px 0 8px;
    font-size: 16.5px;
}

.doc p,
.doc li {
    color: var(--text-secondary);
    font-size: 14.5px;
}

.doc code {
    background: rgba(2, 18, 9, 0.05);
    padding: 2px 6px;
    border-radius: 8px;
}

.footer {
    border-top: 1px solid rgba(2, 18, 9, 0.08);
    padding: 22px 0 30px;
    color: var(--text-secondary);
    font-size: 13px;
}

.footer-inner {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: center;
    justify-content: space-between;
}

.footer a {
    color: var(--text-secondary);
}

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

.canvas-wrap {
    position: absolute;
    inset: 0;
    pointer-events: none;
    opacity: 0.92;
}

#bg3d {
    width: 100%;
    height: 100%;
    display: block;
}

.form {
    display: grid;
    gap: 10px;
    margin-top: 12px;
}

.field {
    display: grid;
    gap: 6px;
}

label {
    font-size: 13px;
    color: var(--text-secondary);
}

input,
textarea {
    width: 100%;
    padding: 12px 12px;
    border-radius: 14px;
    border: 1px solid rgba(2, 18, 9, 0.10);
    background: rgba(253, 253, 252, 0.85);
    outline: none;
    transition: border .18s ease, box-shadow .18s ease;
    font-size: 14px;
    color: var(--text-primary);
}

textarea {
    min-height: 120px;
    resize: vertical;
}

input:focus,
textarea:focus {
    border-color: rgba(0, 125, 75, 0.35);
    box-shadow: 0 0 0 4px rgba(0, 125, 75, 0.10);
}

.form-note {
    font-size: 12.5px;
    color: var(--text-secondary);
}

.toast {
    position: fixed;
    right: 16px;
    bottom: 16px;
    padding: 12px 14px;
    border-radius: 14px;
    background: rgba(2, 18, 9, 0.86);
    color: var(--text-white);
    box-shadow: var(--shadow-soft);
    transform: translateY(10px);
    opacity: 0;
    pointer-events: none;
    transition: transform .2s ease, opacity .2s ease;
    z-index: 999;
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
}

/* responsive */
@media (max-width: 920px) {
    .hero-grid {
        grid-template-columns: 1fr;
    }

    .card {
        grid-column: span 12;
    }
}

@media (max-width: 520px) {
    .nav-links {
        display: none;
    }

    .hero-card-inner {
        padding: 22px 18px;
    }

    .doc-wrap {
        padding: 18px 16px;
    }
}