/* ============================================
   AIRAS - メインスタイルシート
   配色：ダークネイビー(#1B2A4A) × ホワイト × ブルーグリーン(#2EC4B6)
   ============================================ */

/* --- CSS変数 --- */
:root {
    --navy: #1B2A4A;
    --navy-light: #243558;
    --navy-dark: #111D33;
    --teal: #2EC4B6;
    --teal-dark: #25A89C;
    --teal-light: #4DD4C8;
    --white: #FFFFFF;
    --off-white: #F7F9FC;
    --gray-light: #E8ECF1;
    --gray: #8B95A5;
    --gray-dark: #4A5568;
    --text-primary: #1B2A4A;
    --text-secondary: #4A5568;
    --text-light: #8B95A5;
    --font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --container-max: 1100px;
    --section-padding: 120px 0;
    --section-padding-mobile: 80px 0;
    --transition: all 0.3s ease;
    --shadow-sm: 0 2px 8px rgba(27, 42, 74, 0.08);
    --shadow-md: 0 4px 20px rgba(27, 42, 74, 0.12);
    --shadow-lg: 0 8px 40px rgba(27, 42, 74, 0.16);
    --radius: 12px;
    --radius-lg: 20px;
}

/* --- リセット & 基本設定 --- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-family);
    font-weight: 400;
    line-height: 1.9;
    color: var(--text-primary);
    background: var(--white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

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

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
}

.sp-only {
    display: none;
}

/* --- ナビゲーション --- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: transparent;
    transition: var(--transition);
    padding: 0;
}

.navbar.scrolled {
    background: rgba(27, 42, 74, 0.97);
    backdrop-filter: blur(12px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.15);
}

.nav-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.nav-logo {
    font-size: 1.6rem;
    font-weight: 900;
    color: var(--white);
    letter-spacing: 0.15em;
}

.nav-menu {
    list-style: none;
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.85rem;
    font-weight: 500;
    padding: 8px 14px;
    border-radius: 8px;
    transition: var(--transition);
}

.nav-link:hover {
    color: var(--white);
    background: rgba(255, 255, 255, 0.1);
}

.nav-cta-btn {
    background: var(--teal) !important;
    color: var(--white) !important;
    padding: 8px 20px !important;
    border-radius: 50px !important;
    font-weight: 600 !important;
}

.nav-cta-btn:hover {
    background: var(--teal-dark) !important;
    transform: translateY(-1px);
}

/* ハンバーガー */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
    z-index: 1001;
}

.hamburger {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--white);
    position: relative;
    transition: var(--transition);
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    left: 0;
    width: 24px;
    height: 2px;
    background: var(--white);
    transition: var(--transition);
}

.hamburger::before { top: -7px; }
.hamburger::after { top: 7px; }

.nav-toggle.active .hamburger {
    background: transparent;
}

.nav-toggle.active .hamburger::before {
    top: 0;
    transform: rotate(45deg);
}

.nav-toggle.active .hamburger::after {
    top: 0;
    transform: rotate(-45deg);
}

/* --- ボタン --- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-family);
    font-weight: 700;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
    justify-content: center;
    white-space: nowrap;
}

.btn-primary {
    background: var(--teal);
    color: var(--white);
    box-shadow: 0 4px 20px rgba(46, 196, 182, 0.4);
}

.btn-primary:hover {
    background: var(--teal-dark);
    box-shadow: 0 6px 28px rgba(46, 196, 182, 0.5);
    transform: translateY(-2px);
}

.btn-secondary {
    background: var(--white);
    color: var(--navy);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

.btn-secondary:hover {
    background: var(--off-white);
    box-shadow: 0 6px 28px rgba(0, 0, 0, 0.2);
    transform: translateY(-2px);
}

.btn-lg {
    padding: 18px 40px;
    font-size: 1.1rem;
    letter-spacing: 0.02em;
}

/* --- セクション共通 --- */
.section {
    padding: var(--section-padding);
}

.section-title {
    text-align: center;
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 60px;
    letter-spacing: 0.02em;
    line-height: 1.5;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: var(--teal);
    margin: 20px auto 0;
    border-radius: 2px;
}

/* --- ヒーロー --- */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--navy-dark) 0%, var(--navy) 40%, var(--navy-light) 100%);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(ellipse at 20% 50%, rgba(46, 196, 182, 0.08) 0%, transparent 60%),
        radial-gradient(ellipse at 80% 20%, rgba(46, 196, 182, 0.05) 0%, transparent 50%),
        radial-gradient(ellipse at 60% 80%, rgba(46, 196, 182, 0.04) 0%, transparent 50%);
    z-index: 1;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="60" height="60"><defs><pattern id="grid" width="60" height="60" patternUnits="userSpaceOnUse"><path d="M 60 0 L 0 0 0 60" fill="none" stroke="rgba(255,255,255,0.02)" stroke-width="1"/></pattern></defs><rect width="60" height="60" fill="url(%23grid)"/></svg>');
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: 0 24px;
    max-width: 800px;
}

.hero-logo {
    font-size: 5rem;
    font-weight: 900;
    color: var(--white);
    letter-spacing: 0.3em;
    margin-bottom: 16px;
    text-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
    line-height: 1.2;
}

.hero-tagline {
    font-size: 1.6rem;
    font-weight: 600;
    color: var(--teal-light);
    margin-bottom: 28px;
    letter-spacing: 0.15em;
}

.hero-subcopy {
    font-size: 1.1rem;
    font-weight: 400;
    color: rgba(255, 255, 255, 0.75);
    line-height: 2;
    margin-bottom: 48px;
}

.hero-scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: rgba(255, 255, 255, 0.4);
    font-size: 0.7rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, rgba(255, 255, 255, 0.4), transparent);
    animation: scrollLine 2s ease-in-out infinite;
}

@keyframes scrollLine {
    0%, 100% { opacity: 0.4; transform: scaleY(1); }
    50% { opacity: 1; transform: scaleY(1.3); }
}

/* --- お悩みセクション --- */
.section-problems {
    background: var(--off-white);
}

.problems-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
    max-width: 740px;
    margin: 0 auto 48px;
}

.problem-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 28px 32px;
    display: flex;
    align-items: flex-start;
    gap: 20px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border-left: 4px solid transparent;
}

.problem-card:hover {
    box-shadow: var(--shadow-md);
    border-left-color: var(--teal);
    transform: translateX(4px);
}

.problem-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--teal-light);
    font-size: 1.2rem;
}

.problem-card p {
    font-size: 1.05rem;
    font-weight: 500;
    color: var(--text-secondary);
    line-height: 1.8;
    margin: 0;
    padding-top: 4px;
}

.problems-conclusion {
    text-align: center;
    font-size: 1.2rem;
    color: var(--text-primary);
    line-height: 1.8;
}

.problems-conclusion strong {
    color: var(--teal-dark);
    font-size: 1.3rem;
}

/* --- AIRASとはセクション --- */
.section-about {
    background: var(--white);
}

.about-content {
    display: grid;
    grid-template-columns: 1.3fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text p {
    font-size: 1.05rem;
    color: var(--text-secondary);
    margin-bottom: 24px;
    line-height: 2;
}

.about-text p:last-of-type {
    margin-bottom: 0;
}

.about-highlight {
    background: linear-gradient(135deg, rgba(46, 196, 182, 0.08) 0%, rgba(46, 196, 182, 0.04) 100%);
    border-radius: var(--radius);
    padding: 24px 28px;
    border-left: 4px solid var(--teal);
    margin-top: 8px;
}

.about-highlight i {
    color: var(--teal);
    margin-right: 8px;
}

.about-highlight strong {
    color: var(--teal-dark);
    font-size: 1.15rem;
}

.about-visual {
    display: flex;
    align-items: center;
    justify-content: center;
}

.about-icon-group {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.about-icon-item {
    background: var(--off-white);
    border-radius: var(--radius-lg);
    padding: 32px 24px;
    text-align: center;
    transition: var(--transition);
    border: 2px solid transparent;
}

.about-icon-item:hover {
    border-color: var(--teal);
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.about-icon-item i {
    font-size: 2.4rem;
    color: var(--teal);
    display: block;
    margin-bottom: 12px;
}

.about-icon-item span {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* --- 選ばれる理由セクション --- */
.section-reasons {
    background: var(--navy);
    color: var(--white);
}

.section-reasons .section-title {
    color: var(--white);
}

.section-reasons .section-title::after {
    background: var(--teal-light);
}

.reasons-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.reason-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    padding: 48px 32px;
    text-align: center;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.reason-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--teal), var(--teal-light));
    opacity: 0;
    transition: var(--transition);
}

.reason-card:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.2);
}

.reason-card:hover::before {
    opacity: 1;
}

.reason-number {
    font-size: 3rem;
    font-weight: 900;
    color: rgba(46, 196, 182, 0.15);
    position: absolute;
    top: 16px;
    right: 24px;
    line-height: 1;
}

.reason-icon {
    width: 72px;
    height: 72px;
    background: linear-gradient(135deg, var(--teal), var(--teal-dark));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    font-size: 1.8rem;
    color: var(--white);
    box-shadow: 0 4px 20px rgba(46, 196, 182, 0.3);
}

.reason-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 16px;
    letter-spacing: 0.02em;
}

.reason-card p {
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.9;
}

/* --- サービス内容セクション --- */
.section-services {
    background: var(--off-white);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.service-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 40px 32px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    position: relative;
    border: 1px solid var(--gray-light);
}

.service-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
    border-color: var(--teal);
}

.service-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, rgba(46, 196, 182, 0.1), rgba(46, 196, 182, 0.05));
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 1.6rem;
    color: var(--teal);
    transition: var(--transition);
}

.service-card:hover .service-icon {
    background: linear-gradient(135deg, var(--teal), var(--teal-dark));
    color: var(--white);
}

.service-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 14px;
}

.service-card p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.85;
    margin-bottom: 16px;
}

.service-tag {
    display: inline-block;
    background: var(--navy);
    color: var(--teal-light);
    font-size: 0.8rem;
    font-weight: 700;
    padding: 5px 16px;
    border-radius: 50px;
    letter-spacing: 0.02em;
}

/* --- セクションサブタイトル --- */
.section-subtitle {
    text-align: center;
    font-size: 1rem;
    color: var(--text-secondary);
    margin-top: -36px;
    margin-bottom: 48px;
    line-height: 1.8;
}

/* --- サービスタグ（期間限定無料） --- */
.service-tag-free {
    background: linear-gradient(135deg, #e74c3c, #c0392b);
    color: var(--white);
    animation: pulse-free 2s ease-in-out infinite;
}

.service-tag-free i {
    margin-right: 4px;
}

@keyframes pulse-free {
    0%, 100% { box-shadow: 0 0 0 0 rgba(231, 76, 60, 0.3); }
    50% { box-shadow: 0 0 0 8px rgba(231, 76, 60, 0); }
}

.service-note {
    font-size: 0.8rem;
    color: var(--text-light);
    margin-top: 4px;
    margin-bottom: 0;
    line-height: 1.6;
}

/* --- 導入の流れセクション --- */
.section-flow {
    background: var(--white);
}

.flow-timeline {
    max-width: 640px;
    margin: 0 auto;
}

.flow-step {
    display: flex;
    align-items: flex-start;
    gap: 24px;
}

.flow-step-number {
    flex-shrink: 0;
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--teal), var(--teal-dark));
    color: var(--white);
    font-size: 1.4rem;
    font-weight: 900;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 16px rgba(46, 196, 182, 0.3);
}

.flow-step-content {
    flex: 1;
    padding-top: 4px;
}

.flow-step-content h3 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.flow-step-content p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

.flow-connector {
    display: flex;
    justify-content: center;
    padding: 12px 0;
    padding-left: 22px;
    color: var(--teal);
    font-size: 1rem;
    opacity: 0.5;
}

/* --- 料金目安セクション --- */
.section-pricing {
    background: var(--off-white);
}

.pricing-table-wrapper {
    max-width: 740px;
    margin: 0 auto 32px;
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--gray-light);
}

.pricing-table {
    width: 100%;
    border-collapse: collapse;
}

.pricing-table thead {
    background: var(--navy);
    color: var(--white);
}

.pricing-table th {
    padding: 18px 28px;
    font-size: 0.95rem;
    font-weight: 600;
    text-align: left;
    letter-spacing: 0.05em;
}

.pricing-table td {
    padding: 20px 28px;
    font-size: 1rem;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--gray-light);
    vertical-align: middle;
}

.pricing-table tbody tr:last-child td {
    border-bottom: none;
}

.pricing-table tbody tr:hover {
    background: rgba(46, 196, 182, 0.03);
}

.pricing-table td strong {
    color: var(--text-primary);
    font-weight: 600;
}

.pricing-badge {
    display: inline-block;
    background: var(--teal);
    color: var(--white);
    font-size: 0.7rem;
    font-weight: 700;
    padding: 2px 10px;
    border-radius: 50px;
    margin-left: 8px;
    vertical-align: middle;
}

.pricing-note {
    text-align: center;
    font-size: 0.9rem;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.8;
}

.pricing-note i {
    color: var(--teal);
    margin-right: 6px;
}

/* --- 会社概要セクション --- */
.section-company {
    background: var(--white);
}

.company-table-wrapper {
    max-width: 740px;
    margin: 0 auto;
    background: var(--off-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--gray-light);
}

.company-table {
    width: 100%;
    border-collapse: collapse;
}

.company-table th {
    width: 160px;
    padding: 20px 28px;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    text-align: left;
    background: rgba(27, 42, 74, 0.03);
    border-bottom: 1px solid var(--gray-light);
    vertical-align: top;
}

.company-table td {
    padding: 20px 28px;
    font-size: 0.95rem;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--gray-light);
    line-height: 1.8;
}

.company-table tbody tr:last-child th,
.company-table tbody tr:last-child td {
    border-bottom: none;
}

.company-table a {
    color: var(--teal-dark);
    font-weight: 500;
}

.company-table a:hover {
    color: var(--teal);
    text-decoration: underline;
}

/* --- 地域コンテンツセクション（SEO/AIO強化） --- */
.section-local {
    background: var(--off-white);
}

.local-content {
    max-width: 740px;
    margin: 0 auto;
}

.local-content p {
    font-size: 1.05rem;
    color: var(--text-secondary);
    margin-bottom: 24px;
    line-height: 2;
}

.local-content p:last-child {
    margin-bottom: 0;
}

.local-content strong {
    color: var(--text-primary);
}

/* --- CTAセクション --- */
.section-cta {
    background: linear-gradient(135deg, var(--teal) 0%, var(--teal-dark) 100%);
    padding: 100px 0;
    position: relative;
    overflow: hidden;
}

.section-cta::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(255, 255, 255, 0.05) 0%, transparent 50%);
}

.cta-content {
    text-align: center;
    position: relative;
    z-index: 1;
}

.cta-content h2 {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 24px;
    letter-spacing: 0.02em;
    line-height: 1.5;
}

.cta-content > p {
    font-size: 1.05rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 40px;
    line-height: 2;
}

.cta-sub-text {
    font-size: 0.95rem !important;
    color: rgba(255, 255, 255, 0.75) !important;
    margin-top: 20px !important;
    margin-bottom: 0 !important;
}

.cta-note {
    font-size: 0.8rem !important;
    color: rgba(255, 255, 255, 0.4) !important;
    margin-top: 12px !important;
    margin-bottom: 0 !important;
}

/* --- フッター --- */
.footer {
    background: var(--navy-dark);
    color: rgba(255, 255, 255, 0.7);
    padding: 60px 0 0;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr 1fr;
    gap: 40px;
    align-items: start;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-logo {
    font-size: 1.8rem;
    font-weight: 900;
    color: var(--white);
    letter-spacing: 0.15em;
    display: block;
    margin-bottom: 8px;
}

.footer-tagline {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.5);
    margin-bottom: 8px;
}

.footer-address {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.4);
    line-height: 1.6;
}

.footer-area {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.4);
    margin-top: 4px;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 12px 24px;
    justify-content: center;
}

.footer-links a {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.6);
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--teal-light);
}

.footer-contact {
    text-align: right;
}

.footer-contact p {
    font-size: 0.9rem;
}

.footer-contact i {
    color: var(--teal);
    margin-right: 6px;
}

.footer-contact a {
    color: rgba(255, 255, 255, 0.7);
}

.footer-contact a:hover {
    color: var(--teal-light);
}

.footer-bottom {
    text-align: center;
    padding: 24px 0;
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.4);
}

/* --- フェードインアニメーション --- */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================
   レスポンシブ
   ============================================ */

/* タブレット */
@media (max-width: 1024px) {
    .reasons-grid {
        grid-template-columns: 1fr;
        gap: 24px;
        max-width: 500px;
        margin: 0 auto;
    }

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

    .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 24px;
    }

    .footer-contact {
        text-align: center;
    }
}

/* スマホ */
@media (max-width: 768px) {
    html {
        font-size: 15px;
    }

    .sp-only {
        display: inline;
    }

    .section {
        padding: var(--section-padding-mobile);
    }

    .section-title {
        font-size: 1.7rem;
        margin-bottom: 40px;
    }

    .section-subtitle {
        margin-top: -20px;
        margin-bottom: 32px;
        font-size: 0.9rem;
    }

    /* ナビ - モバイルメニュー */
    .nav-toggle {
        display: block;
    }

    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--navy-dark);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 4px;
        transition: right 0.3s ease;
        z-index: 999;
        padding: 20px;
    }

    .nav-menu.active {
        right: 0;
    }

    .nav-link {
        font-size: 1rem;
        padding: 12px 20px;
        width: 100%;
        text-align: center;
    }

    .nav-cta-btn {
        margin-top: 16px;
    }

    /* モバイルオーバーレイ */
    .nav-menu.active::before {
        content: '';
        position: fixed;
        top: 0;
        left: 0;
        right: 280px;
        bottom: 0;
        background: rgba(0, 0, 0, 0.5);
    }

    /* ヒーロー */
    .hero-logo {
        font-size: 3rem;
        letter-spacing: 0.2em;
    }

    .hero-tagline {
        font-size: 1.2rem;
    }

    .hero-subcopy {
        font-size: 0.95rem;
    }

    .btn-lg {
        padding: 16px 32px;
        font-size: 1rem;
    }

    .hero-scroll-indicator {
        display: none;
    }

    /* お悩み */
    .problem-card {
        padding: 20px 24px;
        gap: 16px;
    }

    .problem-icon {
        width: 42px;
        height: 42px;
        font-size: 1rem;
    }

    .problem-card p {
        font-size: 0.95rem;
    }

    /* 理由 */
    .reasons-grid {
        grid-template-columns: 1fr;
        max-width: 100%;
    }

    .reason-card {
        padding: 36px 24px;
    }

    /* サービス */
    .services-grid {
        grid-template-columns: 1fr;
    }

    .service-card {
        padding: 32px 24px;
    }

    /* 導入の流れ */
    .flow-step {
        gap: 16px;
    }

    .flow-step-number {
        width: 48px;
        height: 48px;
        font-size: 1.2rem;
    }

    .flow-connector {
        padding-left: 18px;
    }

    /* 料金 */
    .pricing-table th,
    .pricing-table td {
        padding: 14px 18px;
        font-size: 0.9rem;
    }

    /* 会社概要 */
    .company-table th {
        width: 100px;
        padding: 14px 16px;
        font-size: 0.85rem;
    }

    .company-table td {
        padding: 14px 16px;
        font-size: 0.9rem;
    }

    /* CTA */
    .section-cta {
        padding: 80px 0;
    }

    .cta-content h2 {
        font-size: 1.7rem;
    }

    .cta-content > p {
        font-size: 0.95rem;
    }

    /* フッター */
    .footer-links {
        flex-direction: column;
        align-items: center;
        gap: 8px;
    }
}

/* 小さいスマホ */
@media (max-width: 400px) {
    .hero-logo {
        font-size: 2.4rem;
    }

    .hero-tagline {
        font-size: 1rem;
    }

    .pricing-table-wrapper {
        overflow-x: auto;
    }

    .about-icon-group {
        grid-template-columns: 1fr 1fr;
        gap: 16px;
    }

    .about-icon-item {
        padding: 24px 16px;
    }

    .about-icon-item i {
        font-size: 1.8rem;
    }
}