/* ========================================
   ランディングページ スタイル
   コンセプト: 墨と建築 — 静謐、信頼、知性
   ======================================== */

/* ── CSS変数 ─────────────────────────── */
:root {
    --lp-ink:       #0a0f1a;
    --lp-text:      #1a2332;
    --lp-text-mid:  #4a5568;
    --lp-text-mute: #8892a4;
    --lp-surface:   #ffffff;
    --lp-bg:        #f8f9fb;
    --lp-bg-dark:   #0e1525;
    --lp-border:    #e2e5eb;
    --lp-accent:    #b8860b;
    --lp-accent-h:  #d4a017;
    --lp-accent-bg: rgba(184,134,11,0.06);
    --lp-primary:   #1a2540;
    --lp-success:   #2d6a4f;
    --lp-radius:    10px;
    --lp-radius-lg: 16px;
    --lp-font:      'Inter', 'Noto Sans JP', -apple-system, BlinkMacSystemFont, sans-serif;
    --lp-max:       1120px;
    --lp-transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── リセット & ベース ───────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

.lp {
    font-family: var(--lp-font);
    background: var(--lp-bg);
    color: var(--lp-text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

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

.lp-container-narrow {
    max-width: 800px;
}

/* ── Reveal アニメーション ───────────── */
.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s var(--lp-transition), transform 0.6s var(--lp-transition);
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

.sp-only { display: none; }

/* ========================================
   ヘッダー
   ======================================== */
.lp-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 0 24px;
    transition: background var(--lp-transition), box-shadow var(--lp-transition), backdrop-filter var(--lp-transition);
}

.lp-header.scrolled {
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 1px 3px rgba(0,0,0,0.06);
}

.lp-header .lp-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 64px;
}

.lp-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: #fff;
    transition: color var(--lp-transition);
}

.lp-header.scrolled .lp-logo {
    color: var(--lp-ink);
}

.lp-logo-icon {
    flex-shrink: 0;
}

.lp-logo-name {
    font-size: 15px;
    font-weight: 700;
    letter-spacing: 0.04em;
}

.lp-nav {
    display: flex;
    align-items: center;
    gap: 28px;
}

.lp-nav-link {
    color: rgba(255,255,255,0.75);
    text-decoration: none;
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 0.02em;
    transition: color var(--lp-transition);
}

.lp-nav-link:hover {
    color: #fff;
}

.lp-header.scrolled .lp-nav-link {
    color: var(--lp-text-mid);
}

.lp-header.scrolled .lp-nav-link:hover {
    color: var(--lp-ink);
}

.lp-nav-btn {
    display: inline-flex;
    align-items: center;
    padding: 8px 20px;
    background: var(--lp-accent);
    color: #fff;
    text-decoration: none;
    font-size: 13px;
    font-weight: 600;
    border-radius: 6px;
    letter-spacing: 0.02em;
    transition: background var(--lp-transition), transform var(--lp-transition);
}

.lp-nav-btn:hover {
    background: var(--lp-accent-h);
    transform: translateY(-1px);
}

.lp-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.lp-menu-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: #fff;
    border-radius: 1px;
    transition: transform var(--lp-transition), opacity var(--lp-transition);
}

.lp-header.scrolled .lp-menu-toggle span {
    background: var(--lp-ink);
}

.lp-menu-toggle.open span:first-child {
    transform: translateY(3.5px) rotate(45deg);
}

.lp-menu-toggle.open span:last-child {
    transform: translateY(-3.5px) rotate(-45deg);
}

/* ========================================
   ヒーロー
   ======================================== */
.lp-hero {
    background: linear-gradient(160deg, #0e1525 0%, #1a2540 50%, #1e3050 100%);
    padding: 140px 24px 100px;
    position: relative;
    overflow: hidden;
}

.lp-hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(184,134,11,0.08) 0%, transparent 70%);
    pointer-events: none;
}

.lp-hero .lp-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.lp-hero-label {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    color: var(--lp-accent);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 20px;
    padding: 5px 12px;
    background: rgba(184,134,11,0.1);
    border-radius: 4px;
}

.lp-hero-title {
    font-size: 42px;
    font-weight: 800;
    color: #fff;
    line-height: 1.3;
    margin-bottom: 20px;
    letter-spacing: -0.01em;
}

.lp-hero-accent {
    color: var(--lp-accent-h);
}

.lp-hero-desc {
    font-size: 15px;
    color: rgba(255,255,255,0.7);
    line-height: 1.8;
    margin-bottom: 32px;
}

.lp-hero-actions {
    display: flex;
    gap: 12px;
    margin-bottom: 16px;
}

.lp-hero-sub {
    font-size: 12px;
    color: rgba(255,255,255,0.4);
}

/* ── ボタン共通 ──────────────────────── */
.lp-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    border-radius: 8px;
    letter-spacing: 0.02em;
    transition: all var(--lp-transition);
    cursor: pointer;
    border: none;
}

.lp-btn-primary {
    background: var(--lp-accent);
    color: #fff;
}

.lp-btn-primary:hover {
    background: var(--lp-accent-h);
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(184,134,11,0.3);
}

.lp-btn-ghost {
    background: rgba(255,255,255,0.08);
    color: rgba(255,255,255,0.85);
    border: 1px solid rgba(255,255,255,0.15);
}

.lp-btn-ghost:hover {
    background: rgba(255,255,255,0.14);
    color: #fff;
}

.lp-btn-outline {
    background: transparent;
    color: var(--lp-primary);
    border: 1.5px solid var(--lp-border);
}

.lp-btn-outline:hover {
    border-color: var(--lp-accent);
    color: var(--lp-accent);
    transform: translateY(-2px);
}

.lp-btn-lg {
    padding: 16px 40px;
    font-size: 16px;
    border-radius: 10px;
}

/* ========================================
   ダッシュボード モックアップ
   ======================================== */
.lp-hero-visual {
    perspective: 1200px;
}

.lp-mock {
    background: #1a2035;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0,0,0,0.4), 0 0 0 1px rgba(255,255,255,0.06);
    transform: rotateY(-4deg) rotateX(2deg);
    transition: transform 0.4s ease;
}

.lp-mock:hover {
    transform: rotateY(-1deg) rotateX(0.5deg);
}

.lp-mock-bar {
    display: flex;
    gap: 6px;
    padding: 10px 14px;
    background: rgba(255,255,255,0.04);
    border-bottom: 1px solid rgba(255,255,255,0.06);
}

.lp-mock-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(255,255,255,0.15);
}

.lp-mock-dot:first-child { background: #ff5f57; }
.lp-mock-dot:nth-child(2) { background: #ffbd2e; }
.lp-mock-dot:nth-child(3) { background: #28ca42; }

.lp-mock-body {
    display: flex;
    min-height: 220px;
}

.lp-mock-sidebar {
    width: 48px;
    background: rgba(255,255,255,0.02);
    border-right: 1px solid rgba(255,255,255,0.06);
    padding: 12px 8px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.lp-mock-menu-item {
    height: 6px;
    background: rgba(255,255,255,0.08);
    border-radius: 3px;
}

.lp-mock-menu-item.active {
    background: var(--lp-accent);
    opacity: 0.6;
}

.lp-mock-main {
    flex: 1;
    padding: 16px;
}

.lp-mock-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    margin-bottom: 16px;
}

.lp-mock-card {
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: 8px;
    padding: 12px 10px;
}

.lp-mock-card-label {
    font-size: 9px;
    color: rgba(255,255,255,0.4);
    margin-bottom: 4px;
}

.lp-mock-card-value {
    font-size: 14px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 4px;
}

.lp-mock-card-value.score span {
    font-size: 10px;
    font-weight: 400;
    color: rgba(255,255,255,0.4);
}

.lp-mock-card-change {
    font-size: 10px;
    font-weight: 600;
}

.lp-mock-card-change.up {
    color: #4ade80;
}

.lp-mock-card-bar {
    height: 4px;
    background: rgba(255,255,255,0.08);
    border-radius: 2px;
    overflow: hidden;
}

.lp-mock-card-fill {
    height: 100%;
    background: var(--lp-accent);
    border-radius: 2px;
    animation: fillBar 1.5s ease-out 0.8s both;
}

@keyframes fillBar {
    from { width: 0; }
}

.lp-mock-chart {
    background: rgba(255,255,255,0.02);
    border-radius: 6px;
    padding: 12px;
    border: 1px solid rgba(255,255,255,0.04);
}

.lp-mock-chart-svg {
    width: 100%;
    height: auto;
}

.lp-mock-chart-svg polyline:first-of-type {
    stroke-dasharray: 500;
    stroke-dashoffset: 500;
    animation: drawLine 2s ease-out 1s forwards;
}

@keyframes drawLine {
    to { stroke-dashoffset: 0; }
}

/* ========================================
   数値実績
   ======================================== */
.lp-stats {
    padding: 48px 0;
    background: var(--lp-surface);
    border-bottom: 1px solid var(--lp-border);
}

.lp-stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    text-align: center;
}

.lp-stat-num {
    font-size: 36px;
    font-weight: 800;
    color: var(--lp-ink);
    letter-spacing: -0.02em;
}

.lp-stat-unit {
    font-size: 14px;
    font-weight: 600;
    color: var(--lp-accent);
    margin-left: 2px;
}

.lp-stat-label {
    display: block;
    font-size: 13px;
    color: var(--lp-text-mute);
    margin-top: 4px;
}

/* ========================================
   課題提起
   ======================================== */
.lp-problem {
    padding: 96px 0;
    background: var(--lp-surface);
}

.lp-section-label {
    font-size: 12px;
    font-weight: 600;
    color: var(--lp-accent);
    letter-spacing: 0.12em;
    text-transform: uppercase;
    text-align: center;
    margin-bottom: 12px;
}

.lp-section-title {
    font-size: 30px;
    font-weight: 700;
    color: var(--lp-ink);
    text-align: center;
    line-height: 1.4;
    margin-bottom: 48px;
    letter-spacing: -0.01em;
}

.lp-problem-title {
    font-size: 30px;
    font-weight: 700;
    color: var(--lp-ink);
    text-align: center;
    line-height: 1.4;
    margin-bottom: 48px;
}

.lp-problem-list {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.lp-problem-item {
    display: flex;
    gap: 20px;
    align-items: flex-start;
    padding: 24px 28px;
    background: var(--lp-bg);
    border-radius: var(--lp-radius);
    border: 1px solid var(--lp-border);
    transition: border-color var(--lp-transition), box-shadow var(--lp-transition);
}

.lp-problem-item:hover {
    border-color: var(--lp-accent);
    box-shadow: 0 2px 12px rgba(184,134,11,0.06);
}

.lp-problem-icon {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(184,134,11,0.08);
    border-radius: 10px;
    color: var(--lp-accent);
}

.lp-problem-item h3 {
    font-size: 16px;
    font-weight: 700;
    color: var(--lp-ink);
    margin-bottom: 4px;
}

.lp-problem-item p {
    font-size: 14px;
    color: var(--lp-text-mid);
    line-height: 1.7;
}

/* ========================================
   機能紹介
   ======================================== */
.lp-features {
    padding: 96px 0;
    background: var(--lp-bg);
}

.lp-feature-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    margin-bottom: 80px;
}

.lp-feature-row:last-child {
    margin-bottom: 0;
}

.lp-feature-row.reverse {
    direction: rtl;
}

.lp-feature-row.reverse > * {
    direction: ltr;
}

.lp-feature-tag {
    display: inline-block;
    font-size: 11px;
    font-weight: 600;
    color: var(--lp-accent);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    padding: 4px 10px;
    background: var(--lp-accent-bg);
    border-radius: 4px;
    margin-bottom: 12px;
}

.lp-feature-text h3 {
    font-size: 24px;
    font-weight: 700;
    color: var(--lp-ink);
    margin-bottom: 12px;
    line-height: 1.3;
}

.lp-feature-text p {
    font-size: 14px;
    color: var(--lp-text-mid);
    line-height: 1.8;
    margin-bottom: 16px;
}

.lp-feature-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.lp-feature-list li {
    font-size: 13px;
    color: var(--lp-text);
    padding-left: 20px;
    position: relative;
}

.lp-feature-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 7px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--lp-accent);
    opacity: 0.4;
}

/* ── 機能イラスト ─────────────────────── */
.lp-feature-visual {
    display: flex;
    justify-content: center;
}

.lp-feature-illustration {
    width: 100%;
    max-width: 360px;
    aspect-ratio: 4/3;
    background: var(--lp-surface);
    border: 1px solid var(--lp-border);
    border-radius: var(--lp-radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 32px;
    transition: box-shadow var(--lp-transition);
}

.lp-feature-illustration:hover {
    box-shadow: 0 8px 32px rgba(0,0,0,0.06);
}

.lp-feature-illustration.chart svg {
    width: 100%;
    height: auto;
}

/* スコアリング */
.lp-score-ring {
    position: relative;
    width: 140px;
    height: 140px;
}

.lp-score-ring svg {
    width: 100%;
    height: 100%;
    transform: rotate(0);
}

.lp-score-ring circle:last-of-type {
    stroke-dasharray: 0 264;
    animation: scoreRing 1.5s ease-out 0.5s forwards;
}

@keyframes scoreRing {
    to { stroke-dasharray: 216 264; }
}

.lp-score-value {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 36px;
    font-weight: 800;
    color: var(--lp-ink);
}

/* マップ */
.lp-feature-illustration.map {
    padding: 0;
    overflow: hidden;
}

.lp-map-mock {
    width: 100%;
    height: 100%;
    position: relative;
    background:
        repeating-linear-gradient(0deg, transparent, transparent 19px, var(--lp-border) 19px, var(--lp-border) 20px),
        repeating-linear-gradient(90deg, transparent, transparent 19px, var(--lp-border) 19px, var(--lp-border) 20px);
    background-size: 20px 20px;
    opacity: 0.7;
}

.lp-map-pin {
    position: absolute;
    width: 12px;
    height: 12px;
    background: var(--lp-accent);
    border-radius: 50%;
    border: 2px solid var(--lp-surface);
    box-shadow: 0 2px 6px rgba(0,0,0,0.15);
    transition: transform var(--lp-transition);
}

.lp-map-pin.active {
    width: 16px;
    height: 16px;
    background: #e74c3c;
    animation: pinPulse 2s ease-in-out infinite;
}

@keyframes pinPulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(231,76,60,0.4); }
    50% { box-shadow: 0 0 0 8px rgba(231,76,60,0); }
}

.lp-map-heat {
    position: absolute;
    top: 20%;
    left: 25%;
    width: 50%;
    height: 50%;
    background: radial-gradient(circle, rgba(184,134,11,0.15) 0%, rgba(184,134,11,0.05) 40%, transparent 70%);
    border-radius: 50%;
}

/* ========================================
   使い方ステップ
   ======================================== */
.lp-steps {
    padding: 96px 0;
    background: var(--lp-surface);
}

.lp-steps-grid {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: 16px;
}

.lp-step {
    flex: 1;
    max-width: 220px;
    text-align: center;
}

.lp-step-num {
    width: 44px;
    height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: 800;
    color: var(--lp-accent);
    background: var(--lp-accent-bg);
    border-radius: 50%;
    margin-bottom: 16px;
}

.lp-step h3 {
    font-size: 16px;
    font-weight: 700;
    color: var(--lp-ink);
    margin-bottom: 8px;
}

.lp-step p {
    font-size: 13px;
    color: var(--lp-text-mid);
    line-height: 1.7;
}

.lp-step-arrow {
    flex-shrink: 0;
    color: var(--lp-text-mute);
    margin-top: 10px;
    opacity: 0.4;
}

/* ========================================
   無料トライアル
   ======================================== */
.lp-trial {
    padding: 64px 0;
    background: var(--lp-bg);
}

.lp-trial-card {
    display: flex;
    align-items: center;
    gap: 40px;
    padding: 40px 48px;
    background: var(--lp-surface);
    border: 1px solid var(--lp-border);
    border-left: 4px solid var(--lp-accent);
    border-radius: var(--lp-radius);
}

.lp-trial-content h2 {
    font-size: 20px;
    font-weight: 700;
    color: var(--lp-ink);
    margin-bottom: 8px;
}

.lp-trial-content p {
    font-size: 14px;
    color: var(--lp-text-mid);
    margin-bottom: 16px;
}

.lp-trial-items {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.lp-trial-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: var(--lp-text);
}

.lp-trial-action {
    flex-shrink: 0;
}

/* ========================================
   料金プラン
   ======================================== */
.lp-pricing {
    padding: 96px 0;
    background: var(--lp-surface);
}

.lp-pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    align-items: start;
}

.lp-pricing-card {
    border: 1px solid var(--lp-border);
    border-radius: var(--lp-radius-lg);
    padding: 36px 28px 32px;
    text-align: center;
    position: relative;
    background: var(--lp-surface);
    transition: transform var(--lp-transition), box-shadow var(--lp-transition);
}

.lp-pricing-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0,0,0,0.06);
}

.lp-pricing-card.featured {
    border-color: var(--lp-accent);
    border-width: 2px;
    padding-top: 44px;
}

.lp-pricing-badge {
    position: absolute;
    top: -13px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--lp-accent);
    color: #fff;
    font-size: 11px;
    font-weight: 700;
    padding: 4px 16px;
    border-radius: 20px;
    letter-spacing: 0.06em;
    white-space: nowrap;
}

.lp-pricing-name {
    font-size: 16px;
    font-weight: 700;
    color: var(--lp-ink);
    margin-bottom: 8px;
}

.lp-pricing-price {
    font-size: 36px;
    font-weight: 800;
    color: var(--lp-ink);
    margin-bottom: 4px;
    letter-spacing: -0.02em;
}

.lp-pricing-price span {
    font-size: 14px;
    font-weight: 400;
    color: var(--lp-text-mute);
}

.lp-pricing-desc {
    font-size: 13px;
    color: var(--lp-text-mute);
    margin-bottom: 24px;
}

.lp-pricing-list {
    list-style: none;
    text-align: left;
    margin-bottom: 28px;
}

.lp-pricing-list li {
    padding: 6px 0;
    font-size: 13px;
    color: var(--lp-text-mid);
    display: flex;
    align-items: center;
    gap: 8px;
}

.lp-pricing-list li::before {
    content: '\2713';
    color: var(--lp-success);
    font-weight: 700;
    font-size: 12px;
    flex-shrink: 0;
}

.lp-pricing-card .lp-btn {
    width: 100%;
}

/* ========================================
   最終CTA
   ======================================== */
.lp-cta-final {
    padding: 96px 0;
    background: linear-gradient(160deg, #0e1525 0%, #1a2540 100%);
    text-align: center;
}

.lp-cta-final-title {
    font-size: 30px;
    font-weight: 700;
    color: #fff;
    line-height: 1.4;
    margin-bottom: 32px;
}

.lp-cta-final-sub {
    font-size: 13px;
    color: rgba(255,255,255,0.4);
    margin-top: 16px;
}

/* ========================================
   フッター
   ======================================== */
.lp-footer {
    padding: 32px 0;
    background: var(--lp-bg);
    border-top: 1px solid var(--lp-border);
}

.lp-footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.lp-footer-source {
    font-size: 12px;
    color: var(--lp-text-mute);
}

.lp-footer-links {
    display: flex;
    gap: 20px;
}

.lp-footer-links a {
    font-size: 12px;
    color: var(--lp-text-mute);
    text-decoration: none;
    transition: color var(--lp-transition);
}

.lp-footer-links a:hover {
    color: var(--lp-accent);
}

/* ========================================
   Cookie バナー（既存互換）
   ======================================== */
.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--lp-surface);
    border-top: 1px solid var(--lp-border);
    padding: 16px 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    z-index: 200;
    box-shadow: 0 -2px 12px rgba(0,0,0,0.06);
}

.cookie-banner-text {
    font-size: 13px;
    color: var(--lp-text-mid);
}

.cookie-banner-text a {
    color: var(--lp-accent);
    text-decoration: none;
}

.cookie-banner-button {
    padding: 8px 20px;
    background: var(--lp-primary);
    color: #fff;
    border: none;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: background var(--lp-transition);
}

.cookie-banner-button:hover {
    background: var(--lp-accent);
}

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

/* タブレット */
@media (max-width: 960px) {
    .lp-hero .lp-container {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .lp-hero {
        padding: 120px 24px 72px;
        text-align: center;
    }

    .lp-hero-actions {
        justify-content: center;
    }

    .lp-hero-visual {
        max-width: 520px;
        margin: 0 auto;
    }

    .lp-mock {
        transform: none;
    }

    .lp-mock:hover {
        transform: none;
    }

    .lp-feature-row,
    .lp-feature-row.reverse {
        grid-template-columns: 1fr;
        gap: 32px;
        direction: ltr;
    }

    .lp-feature-visual {
        order: -1;
    }

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

/* モバイル */
@media (max-width: 640px) {
    .sp-only { display: inline; }

    .lp-menu-toggle {
        display: flex;
    }

    .lp-nav {
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        background: var(--lp-surface);
        flex-direction: column;
        padding: 24px;
        gap: 16px;
        box-shadow: 0 8px 24px rgba(0,0,0,0.1);
        transform: translateY(-110%);
        transition: transform var(--lp-transition);
        z-index: 99;
    }

    .lp-nav.open {
        transform: translateY(0);
    }

    .lp-nav-link {
        color: var(--lp-text) !important;
        font-size: 15px;
    }

    .lp-nav-btn {
        width: 100%;
        justify-content: center;
        padding: 12px;
    }

    .lp-hero {
        padding: 100px 20px 60px;
    }

    .lp-hero-title {
        font-size: 28px;
    }

    .lp-hero-desc {
        font-size: 14px;
    }

    .lp-hero-desc br {
        display: none;
    }

    .lp-hero-actions {
        flex-direction: column;
    }

    .lp-stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }

    .lp-stat-num {
        font-size: 28px;
    }

    .lp-section-title,
    .lp-problem-title {
        font-size: 22px;
    }

    .lp-problem,
    .lp-features,
    .lp-steps,
    .lp-pricing {
        padding: 64px 0;
    }

    .lp-feature-text h3 {
        font-size: 20px;
    }

    .lp-steps-grid {
        flex-direction: column;
        align-items: center;
    }

    .lp-step-arrow {
        transform: rotate(90deg);
    }

    .lp-step {
        max-width: 280px;
    }

    .lp-trial-card {
        flex-direction: column;
        padding: 28px 24px;
        gap: 24px;
    }

    .lp-trial-action {
        width: 100%;
    }

    .lp-trial-action .lp-btn {
        width: 100%;
    }

    .lp-pricing-grid {
        grid-template-columns: 1fr;
        gap: 16px;
        max-width: 400px;
        margin: 0 auto;
    }

    .lp-cta-final {
        padding: 64px 0;
    }

    .lp-cta-final-title {
        font-size: 22px;
    }

    .lp-footer-inner {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }

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

    .lp-mock-cards {
        grid-template-columns: 1fr;
    }

    .cookie-banner {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }
}

/* 超小画面 */
@media (max-width: 380px) {
    .lp-hero-title {
        font-size: 24px;
    }

    .lp-pricing-card {
        padding: 28px 20px 24px;
    }
}