/* ===== Sukkiri — 共通スタイル ===== */

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

:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #eff6ff;
    --accent: #059669;
    --text-main: #1e293b;
    --text-sub: #64748b;
    --text-light: #94a3b8;
    --bg-white: #ffffff;
    --bg-light: #f8fafc;
    --bg-section: #f1f5f9;
    --border: #e2e8f0;
    --border-light: #f1f5f9;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -2px rgba(0,0,0,0.05);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -4px rgba(0,0,0,0.04);
    --radius: 8px;
    --radius-lg: 12px;
}

html { scroll-behavior: smooth; }

body {
    font-family: 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', 'Noto Sans JP', 'メイリオ', Meiryo, system-ui, sans-serif;
    color: var(--text-main);
    background: var(--bg-white);
    line-height: 1.8;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}

a { color: var(--primary); text-decoration: none; }
img { max-width: 100%; display: block; }

.container {
    max-width: 1040px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== Header ===== */
header {
    position: sticky;
    top: 0;
    background: rgba(255,255,255,0.97);
    backdrop-filter: blur(8px);
    z-index: 100;
    border-bottom: 1px solid var(--border);
}

.header-inner {
    max-width: 1040px;
    margin: 0 auto;
    padding: 0 24px;
    height: 64px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 22px;
    font-weight: 800;
    color: var(--primary);
    letter-spacing: -0.5px;
}

.logo a { color: inherit; }
.logo a:hover { text-decoration: none; }

.header-nav {
    display: flex;
    align-items: center;
    gap: 32px;
}

.header-nav a {
    color: var(--text-sub);
    font-size: 14px;
    font-weight: 500;
    transition: color 0.15s;
}

.header-nav a:hover { color: var(--text-main); }
.header-nav a.btn-cta { color: #fff; }
.header-nav a.btn-cta:hover { color: #fff; }

.header-nav a.active {
    color: var(--primary);
    font-weight: 600;
}

/* ===== Buttons ===== */
.btn-cta {
    display: inline-block;
    background: var(--primary);
    color: #fff;
    padding: 10px 24px;
    border-radius: var(--radius);
    font-size: 14px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: background 0.15s;
    text-align: center;
    white-space: nowrap;
}

.btn-cta:hover {
    background: var(--primary-dark);
    text-decoration: none;
    color: #fff;
}

.btn-cta-large {
    padding: 14px 36px;
    font-size: 16px;
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}

.btn-outline:hover {
    background: var(--primary-light);
    color: var(--primary);
}

/* ===== Section Common ===== */
.section-label {
    font-size: 13px;
    font-weight: 700;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: 12px;
}

.section-heading {
    font-size: 30px;
    font-weight: 800;
    color: var(--text-main);
    margin-bottom: 20px;
    line-height: 1.5;
    letter-spacing: -0.3px;
}

.section-desc {
    font-size: 16px;
    color: var(--text-sub);
    margin-bottom: 48px;
    line-height: 1.8;
    max-width: 640px;
}

/* ===== Page Hero (subpages) ===== */
.page-hero {
    padding: 56px 0 48px;
    background: var(--bg-section);
    border-bottom: 1px solid var(--border);
}

.page-hero .section-heading {
    margin-bottom: 8px;
}

.page-hero .section-desc {
    margin-bottom: 0;
}

/* ===== Footer ===== */
footer {
    background: var(--text-main);
    color: #fff;
    padding: 48px 0 24px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 40px;
    margin-bottom: 32px;
}

.footer-brand { font-size: 20px; font-weight: 800; margin-bottom: 12px; }

.footer-company {
    font-size: 13px;
    color: rgba(255,255,255,0.6);
    line-height: 1.8;
}

.footer-links { display: flex; gap: 48px; }

.footer-link-group h4 {
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 12px;
    color: rgba(255,255,255,0.5);
}

.footer-link-group a {
    display: block;
    font-size: 14px;
    color: rgba(255,255,255,0.8);
    margin-bottom: 8px;
    transition: color 0.15s;
}

.footer-link-group a:hover { color: #fff; }

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 20px;
    font-size: 13px;
    color: rgba(255,255,255,0.4);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* ===== CTA Section ===== */
.final-cta {
    padding: 80px 0;
    background: var(--bg-white);
    text-align: center;
}

.final-cta-box {
    background: var(--primary-light);
    border: 1px solid #dbeafe;
    border-radius: var(--radius-lg);
    padding: 56px 40px;
    max-width: 700px;
    margin: 0 auto;
}

.final-cta-box h2 {
    font-size: 28px;
    font-weight: 800;
    color: var(--text-main);
    margin-bottom: 16px;
    line-height: 1.5;
}

.final-cta-box p {
    font-size: 16px;
    color: var(--text-sub);
    margin-bottom: 32px;
    line-height: 1.8;
}

.final-cta-note {
    margin-top: 16px;
    font-size: 13px;
    color: var(--text-light);
}

/* ===== Responsive ===== */
@media (max-width: 900px) {
    .footer-grid { grid-template-columns: 1fr; }
    .footer-links { gap: 32px; }
}

@media (max-width: 600px) {
    .header-nav a:not(.btn-cta) { display: none; }
    .section-heading { font-size: 24px; }
    .footer-links { flex-direction: column; gap: 24px; }
    .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
    .final-cta-box { padding: 40px 24px; }
    .final-cta-box h2 { font-size: 22px; }
    .page-hero { padding: 40px 0 32px; }
}