/* リセットとベース設定 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* ブランドカラーパレット（メイン：パープル） */
    --primary-color: #6C3CCF;
    --primary-dark: #4A239C;
    --primary-light: #BCA8FF;

    --secondary-color: #8F6BFF;
    --secondary-dark: #7750E4;
    --accent-blue: #6C8CFF;
    --accent-plum: #5A2CA3;
    --accent-gold: #F1D76F;
    --accent-gold-dark: #D9B845;
    --surface-soft: #EFEFEF;
    --surface-warm: #F2ECFF;
    --surface-cool: #ECE7FF;

    /* グレースケール */
    --black: #1E1E1E;
    --gray-dark: #3B3253;
    --gray: #655F76;
    --gray-light: #E8E2F8;
    --white: #FFFFFF;

    /* その他 */
    --shadow: 0 2px 14px rgba(45, 22, 94, 0.12);
    --shadow-hover: 0 12px 34px rgba(45, 22, 94, 0.18);

    --gradient-primary: linear-gradient(135deg, rgba(74, 35, 156, 0.95) 0%, rgba(108, 60, 207, 0.95) 55%, rgba(188, 168, 255, 0.9) 100%);
}

body {
    font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--black);
    line-height: 1.7;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* アイコン共通設定 */
.icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: inherit;
    vertical-align: middle;
    font-family: 'Material Symbols Rounded';
    font-weight: normal;
    font-style: normal;
    font-size: 24px;
    line-height: 1;
    width: 1em;
    height: 1em;
}

.icon--sm {
    font-size: 18px;
}

.icon--lg {
    font-size: 32px;
}

.icon--xl {
    font-size: 48px;
}

.material-symbols-rounded {
    font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
}

.icon-warning {
    color: var(--secondary-dark);
}

.icon-target {
    color: var(--primary-light);
}

.icon-idea {
    color: var(--secondary-color);
}

.icon-gear {
    color: var(--primary-dark);
}

.icon-close {
    color: var(--primary-dark);
}

.icon-phone {
    color: var(--primary-color);
}

.icon-sparkle {
    color: var(--primary-light);
}

.icon-link {
    color: var(--accent-blue);
}

.icon-money {
    color: var(--secondary-dark);
}

.icon-medal {
    color: var(--secondary-color);
}

.icon-rocket {
    color: var(--accent-blue);
}

.icon-calendar {
    color: var(--primary-color);
}

.icon-laptop {
    color: var(--primary-dark);
}

.icon-gift {
    color: var(--primary-light);
}

.icon-check {
    color: var(--primary-color);
}

.icon-diamond {
    color: var(--primary-light);
}

.icon-star {
    color: var(--secondary-color);
}

/* ナビゲーション */
.navigation {
    position: fixed;
    top: 0;
    width: 100%;
    background: white;
    box-shadow: var(--shadow);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 10px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    min-height: 90px;
}

.logo {
    display: inline-flex;
    align-items: center;
    text-decoration: none;
}

.logo img {
    height: 68px;
    width: auto;
    display: block;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-menu a {
    color: var(--black);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-menu a:hover {
    color: var(--primary-color);
}

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

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--black);
    margin: 3px 0;
    transition: 0.3s;
}

/* CTAボタンユーティリティ */
.cta-button-group {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    justify-content: center;
}

.cta-button-group--left {
    justify-content: flex-start;
}

/* ヒーローセクション */
.hero {
    padding: 140px 0 80px;
    color: white;
    text-align: center;
    position: relative;
    overflow: hidden;
    background: var(--gradient-primary);
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    animation: rotate 30s linear infinite;
}

@keyframes rotate {
    from {
        transform: rotate(0deg);
    }

    to {
        transform: rotate(360deg);
    }
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: clamp(32px, 5vw, 52px);
    font-weight: bold;
    margin-bottom: 20px;
    line-height: 1.4;
}

.hero-subtitle {
    font-size: clamp(18px, 2.5vw, 24px);
    margin-bottom: 40px;
    opacity: 0.95;
}

.hero-cta {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    justify-content: center;
}

.cta-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 18px 40px;
    background: var(--primary-color);
    color: var(--white);
    text-decoration: none;
    border-radius: 50px;
    font-weight: 700;
    font-size: 18px;
    transition: transform 0.3s ease, box-shadow 0.3s ease, filter 0.3s ease;
    box-shadow: 0 16px 34px rgba(74, 35, 156, 0.25);
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 20px 42px rgba(74, 35, 156, 0.32);
}

.cta-button--consult {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
    box-shadow: 0 18px 36px rgba(74, 35, 156, 0.28);
    white-space: nowrap;
}

.cta-button--consult:hover {
    box-shadow: 0 22px 42px rgba(74, 35, 156, 0.34);
    filter: brightness(1.05);
}

.cta-button--line {
    background: linear-gradient(135deg, var(--accent-gold-dark), var(--accent-gold));
    color: var(--black);
    box-shadow: 0 18px 34px rgba(209, 184, 69, 0.28);
}

.cta-button--line:hover {
    box-shadow: 0 22px 40px rgba(209, 184, 69, 0.34);
    filter: brightness(1.05);
}

.cta-note {
    margin-top: 15px;
    font-size: 14px;
    opacity: 0.9;
}

/* お悩みセクション */
.problems {
    padding: 100px 0;
    background: var(--surface-soft);
}

.problems-visual {
    display: grid;
    grid-template-columns: 1fr;
    gap: 60px;
    margin-top: 60px;
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
}

.problem-item-large {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 40px;
    background: var(--white);
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    overflow: hidden;
    align-items: center;
}

.problem-item-large:nth-child(even) {
    grid-template-columns: 1.5fr 1fr;
}

.problem-item-large:nth-child(even) .problem-image {
    order: 2;
}

.problem-image {
    width: 100%;
    height: 250px;
    position: relative;
    overflow: hidden;
}

.placeholder-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: filter 0.3s ease;
}

.problem-badge {
    display: inline-block;
    background: var(--secondary-color);
    color: white;
    padding: 8px 16px;
    border-radius: 25px;
    font-size: 14px;
    font-weight: bold;
    margin-bottom: 20px;
    letter-spacing: 0.5px;
}

.problem-text h3 {
    font-size: clamp(24px, 4vw, 32px);
    color: var(--black);
    margin: 0 0 20px 0;
    line-height: 1.3;
    font-weight: 700;
}

.problem-text p {
    font-size: 20px;
    color: var(--gray-dark);
    margin: 0 0 25px 0;
    line-height: 1.6;
}

.warning-box {
    background: var(--surface-warm);
    border: 1px solid rgba(241, 215, 111, 0.45);
    border-radius: 12px;
    padding: 15px 20px;
    font-size: 16px;
    font-weight: 600;
    color: var(--primary-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    text-align: left;
}

.warning-box span {
    flex: 0 1 auto;
}

.section-title {
    font-size: clamp(28px, 4vw, 36px);
    text-align: center;
    margin-bottom: 50px;
    color: var(--black);
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--secondary-color);
}

/* 未来への問いかけ */
.future-question {
    padding: 100px 0;
    text-align: center;
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
    color: var(--white);
}

.question-box {
    background: var(--surface-soft);
    padding: 60px 40px;
    border-radius: 20px;
    max-width: 800px;
    margin: 0 auto;
    box-shadow: var(--shadow);
    border: 1px solid rgba(108, 60, 207, 0.18);
}

.question-title {
    font-size: clamp(28px, 3.5vw, 36px);
    color: var(--primary-dark);
    margin-bottom: 20px;
}

.question-text {
    font-size: 20px;
    color: var(--gray-dark);
}

/* 解決策セクション */
.solution {
    padding: 80px 0;
    background: white;
}

/* 原因セクションのデザイン強化 */
.cause-section {
    margin-bottom: 80px;
}

.cause-intro {
    text-align: center;
    margin-bottom: 50px;
}

.cause-main-title {
    font-size: clamp(32px, 4vw, 42px);
    color: var(--black);
    margin-bottom: 15px;
    font-weight: bold;
}

.cause-subtitle {
    font-size: 20px;
    color: var(--gray);
    line-height: 1.6;
}

.cause-formula {
    background: var(--primary-color);
    color: var(--white);
    padding: 40px;
    border-radius: 20px;
    margin: 50px 0;
    text-align: center;
    box-shadow: 0 18px 42px rgba(74, 35, 156, 0.28);
}

.formula-title {
    font-size: 32px;
    font-weight: bold;
    margin-bottom: 30px;
    text-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

.formula-components {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.component-box {
    background: var(--white);
    color: var(--black);
    padding: 25px 20px;
    border-radius: 15px;
    min-width: 150px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.component-box--strategy {
    /* background: linear-gradient(135deg, rgba(108, 60, 207, 0.08) 0%, rgba(255, 255, 255, 0.96) 90%); */
}

.component-box--mindset {
    /* background: linear-gradient(135deg, rgba(143, 107, 255, 0.12) 0%, rgba(255, 255, 255, 0.97) 90%); */
}

.component-box--environment {
    /* background: linear-gradient(135deg, rgba(108, 140, 255, 0.14) 0%, rgba(255, 255, 255, 0.97) 90%); */
}

.component-icon {
    width: 64px;
    height: 64px;
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 12px;
    background: rgba(108, 60, 207, 0.14);
    color: var(--primary-dark);
}

.component-icon .icon {
    font-size: 32px;
}

.component-icon--strategy {
    background: rgba(108, 60, 207, 0.12);
    color: var(--primary-dark);
}

.component-icon--mindset {
    background: rgba(143, 107, 255, 0.16);
    color: var(--secondary-dark);
}

.component-icon--environment {
    background: rgba(108, 140, 255, 0.16);
    color: var(--accent-blue);
}

.component-title {
    font-size: 20px;
    font-weight: bold;
    color: var(--primary-dark);
}

.component-box--mindset .component-title {
    color: var(--secondary-dark);
}

.component-box--environment .component-title {
    color: var(--accent-blue);
}

.formula-symbol {
    font-size: 32px;
    font-weight: bold;
    color: var(--primary-light);
    text-shadow: 0 2px 5px rgba(0, 0, 0, 0.25);
    margin: 0 10px;
}

.cause-problems {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 32px;
    margin: 60px 0;
    padding-left: 44px;
    counter-reset: cause-step;
}

.problem-card {
    position: relative;
    background: var(--white);
    border-radius: 18px;
    padding: 32px 32px 32px 52px;
    box-shadow: var(--shadow);
    border: none;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    overflow: visible;
}

.problem-card::before {
    counter-increment: cause-step;
    content: counter(cause-step, decimal-leading-zero);
    position: absolute;
    left: -48px;
    top: 18px;
    width: 80px;
    height: 80px;
    border-radius: 22px;
    background: rgba(255, 255, 255, 0.9);
    color: var(--primary-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 28px;
    letter-spacing: 0.04em;
    box-shadow: 0 20px 38px rgba(74, 35, 156, 0.18);
    backdrop-filter: blur(8px);
    border: 2px solid rgba(255, 255, 255, 0.65);
}

.problem-card::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    border: 1px solid rgba(108, 60, 207, 0.14);
    pointer-events: none;
}


.problem-card--strategy {
    background: linear-gradient(135deg, rgba(108, 60, 207, 0.08) 0%, rgba(255, 255, 255, 0.94) 85%);
}

.problem-card--mindset {
    background: linear-gradient(135deg, rgba(143, 107, 255, 0.12) 0%, rgba(255, 255, 255, 0.95) 90%);
}

.problem-card--environment {
    background: linear-gradient(135deg, rgba(108, 140, 255, 0.16) 0%, rgba(255, 255, 255, 0.95) 90%);
}

.problem-card--strategy::before {
    background: linear-gradient(135deg, rgba(108, 60, 207, 0.24) 0%, rgba(188, 168, 255, 0.62) 100%);
}

.problem-card--mindset::before {
    background: linear-gradient(135deg, rgba(143, 107, 255, 0.26) 0%, rgba(255, 210, 255, 0.6) 100%);
    color: var(--secondary-dark);
}

.problem-card--environment::before {
    background: linear-gradient(135deg, rgba(108, 140, 255, 0.3) 0%, rgba(210, 224, 255, 0.7) 100%);
    color: var(--accent-blue);
}


.problem-header {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 18px;
    padding: 0;
    background: transparent;
    border: none;
}

.problem-icon {
    width: 46px;
    height: 46px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(108, 60, 207, 0.12);
    color: var(--primary-dark);
}

.problem-icon .icon {
    margin-top: 3px;
    font-size: 26px;
}

.problem-card--mindset .problem-icon {
    background: rgba(143, 107, 255, 0.16);
    color: var(--secondary-dark);
}

.problem-card--environment .problem-icon {
    background: rgba(108, 140, 255, 0.16);
    color: var(--accent-blue);
}

.problem-heading {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.problem-label {
    display: inline-block;
    padding: 4px 12px;
    font-size: 11px;
    letter-spacing: 0.12em;
    font-weight: 700;
    border-radius: 999px;
    text-transform: uppercase;
}

.problem-label--strategy {
    background: rgba(108, 60, 207, 0.14);
    color: var(--primary-dark);
}

.problem-label--mindset {
    background: rgba(143, 107, 255, 0.18);
    color: var(--secondary-dark);
}

.problem-label--environment {
    background: rgba(108, 140, 255, 0.18);
    color: var(--accent-blue);
}

.problem-header h3 {
    color: var(--primary-dark);
    font-size: 24px;
    font-weight: 700;
    margin: 0;
}

.problem-content {
    display: flex;
    flex-direction: column;
    gap: 14px;
    padding: 0;
}

.problem-content p {
    color: var(--gray-dark);
    font-size: 20px;
    line-height: 1.6;
    margin: 0;
    font-weight: 600;
}

.problem-details {
    display: flex;
    flex-direction: column;
    gap: 6px;
    color: var(--gray);
    font-size: 14px;
    padding-left: 16px;
    border-left: 3px solid rgba(108, 60, 207, 0.18);
}

.detail-item {
    font-size: 16px;
    line-height: 1.5;
}

.cause-conclusion {}

.conclusion-flow {
    position: relative;
    padding: 0 20px 60px;
}

.flow-arrow-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 18px;
    margin-bottom: 40px;
    flex-wrap: nowrap;
}

.flow-start,
.flow-solution,
.flow-result {
    background: var(--primary-color);
    color: white;
    padding: 15px 30px;
    border-radius: 48px;
    font-weight: 700;
    font-size: 18px;
    position: relative;
    z-index: 2;
    box-shadow: 0 14px 34px rgba(74, 35, 156, 0.26);
    transition: all 0.3s ease;
    white-space: nowrap;
}

.flow-solution {
    background: var(--accent-gold);
    color: var(--primary-dark);
    transform: scale(1.1);
}

.flow-result {
    background: var(--accent-blue);
    color: white;
}

.flow-arrow {
    position: relative;
    width: 56px;
    height: 14px;
    flex-shrink: 0;
    margin: 0 -6px;
}

.flow-arrow::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 10px;
    right: 18px;
    height: 4px;
    border-radius: 999px;
    background: linear-gradient(90deg, var(--primary-color) 0%, var(--accent-gold) 100%);
    transform: translateY(-50%);
}

.flow-arrow::after {
    content: '';
    position: absolute;
    top: 50%;
    right: 0;
    transform: translateY(-50%);
    width: 0;
    height: 0;
    border-top: 7px solid transparent;
    border-bottom: 7px solid transparent;
    border-left: 14px solid var(--accent-gold);
}

.conclusion-message {
    text-align: center;
    padding: 30px;
    background: var(--gray-light);
    border-radius: 20px;
    border-left: 5px solid var(--secondary-color);
    border-right: 5px solid var(--primary-color);
}

.conclusion-text {
    font-size: 24px;
    color: var(--black);
    line-height: 1.8;
    font-weight: 500;
    margin: 0;
}

.conclusion-emphasis {
    display: inline-block;
    margin-top: 10px;
    font-size: 28px;
    font-weight: bold;
    color: var(--primary-color);
}

.highlight-text {
    color: var(--primary-color);
    font-weight: bold;
    font-size: 26px;
}

.cause-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.cause-item {
    text-align: center;
    padding: 20px;
}

.cause-item h3 {
    color: var(--primary-color);
    margin-bottom: 10px;
}

/* 解決策セクションのデザイン強化 */
.solution-hero {
    text-align: center;
    margin: 60px 0;
    padding: 40px;
    background: var(--primary-color);
    border-radius: 20px;
    color: white;
    position: relative;
    overflow: hidden;
}

.solution-hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    animation: rotate 20s linear infinite;
}

.solution-badge {
    display: inline-block;
    padding: 8px 20px;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border-radius: 30px;
    font-size: 12px;
    font-weight: bold;
    letter-spacing: 2px;
    margin-bottom: 20px;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.solution-title {
    font-size: clamp(32px, 4vw, 52px);
    font-weight: bold;
    margin-bottom: 15px;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.solution-subtitle {
    font-size: 22px;
    opacity: 0.95;
    margin-bottom: 0;
}


.solution-flow {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 46px 24px;
    margin: 50px auto 0;
    max-width: 1100px;
    width: 100%;
}

.solution-step {
    position: relative;
    background: var(--white);
    border-radius: 18px;
    padding: 42px 24px 28px;
    box-shadow: var(--shadow);
    border: 1px solid rgba(108, 60, 207, 0.14);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.solution-step .step-circle {
    position: absolute;
    top: -26px;
    left: 24px;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 18px;
    font-weight: 700;
    box-shadow: 0 14px 28px rgba(74, 35, 156, 0.28);
}

.solution-step .step-num {
    color: inherit;
}


.solution-step .step-card {
    padding: 0;
    border: none;
    box-shadow: none;
    background: transparent;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.solution-step .step-card-header {
    display: flex;
    align-items: center;
    gap: 16px;
}

.solution-step .step-card .step-icon {
    width: 52px;
    height: 52px;
    border-radius: 16px;
    background: rgba(143, 107, 255, 0.18);
    border: 1px solid rgba(108, 60, 207, 0.18);
    display: flex;
    align-items: center;
    justify-content: center;
}

.solution-step .step-card .step-icon .icon {
    font-size: 26px;
}

.solution-step .step-card h4 {
    font-size: 24px;
    margin: 0;
    color: var(--black);
}

.solution-step .step-card p {
    font-size: 16px;
    line-height: 1.6;
    color: var(--gray-dark);
    margin: 0;
}

.step-number {
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: bold;
    margin: 0 auto 15px;
    box-shadow: 0 12px 28px rgba(74, 35, 156, 0.25);
}

.step-content h4 {
    font-size: 16px;
    font-weight: bold;
    color: var(--black);
    margin-bottom: 8px;
}

.step-content p {
    font-size: 14px;
    color: var(--gray-dark);
    line-height: 1.4;
}

.step-icon {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    background: rgba(143, 107, 255, 0.18);
    border: 1px solid rgba(108, 60, 207, 0.18);
    display: flex;
    align-items: center;
    justify-content: center;
}

.step-icon .icon {
    font-size: 24px;
}

.solution-cta {
    text-align: center;
    padding: 40px;
    background: var(--surface-soft);
    border-radius: 20px;
    margin-top: 40px;
}

.cta-text {
    font-size: 28px;
    color: var(--black);
    margin-bottom: 25px;
    line-height: 1.6;
}

.highlight {
    color: var(--primary-color);
    font-weight: bold;
}

/* アニメーション */
@keyframes bounce {

    0%,
    20%,
    50%,
    80%,
    100% {
        transform: translateY(0);
    }

    40% {
        transform: translateY(-10px);
    }

    60% {
        transform: translateY(-5px);
    }
}

.flow-item {
    background: var(--secondary-color);
    color: white;
    padding: 12px 20px;
    border-radius: 25px;
    font-weight: bold;
    font-size: 14px;
}

.flow-arrow {
    color: var(--secondary-color);
    font-size: 20px;
    font-weight: bold;
}

/* 選ばれる理由 */
.reasons {
    padding: 80px 0;
    background: var(--surface-soft);
}

.reasons-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    margin-top: 50px;
}

.reason-card {
    background: var(--gray-light);
    padding: 40px 30px;
    border-radius: 15px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.reason-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: var(--primary-color);
}

.reason-number {
    font-size: 48px;
    font-weight: bold;
    color: var(--primary-color);
    opacity: 0.2;
    margin-bottom: 15px;
}

.reason-card h3 {
    font-size: 24px;
    margin-bottom: 15px;
    line-height: 1.5;
}

/* 講師プロフィール */
.instructors {
    padding: 80px 0;
    background: white;
}

.instructors-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 50px;
    margin-top: 50px;
}

.instructor-card {
    text-align: center;
}

.instructor-image {
    width: 200px;
    height: 200px;
    margin: 0 auto 20px;
    border-radius: 50%;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.instructor-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.instructor-card h3 {
    font-size: 28px;
    margin-bottom: 10px;
}

.instructor-title {
    color: var(--primary-color);
    margin-bottom: 20px;
}

.instructor-achievements {
    list-style: none;
    text-align: left;
    max-width: 360px;
    margin: 0 auto;
}

.instructor-achievements li {
    font-size: 18px;
    padding: 8px 0;
    padding-left: 25px;
    position: relative;
}

.instructor-achievements li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--secondary-color);
    font-weight: bold;
}

.instructor-social {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-top: 25px;
    flex-wrap: wrap;
}

.instructor-social-link {
    display: inline-flex;
    align-items: center;
    padding: 8px 16px;
    border-radius: 999px;
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.instructor-social-icon {
    font-size: 20px;
    margin-right: 6px;
}

.instructor-social-link:hover {
    background: var(--primary-color);
    color: #fff;
    border-color: var(--primary-color);
}

/* カリキュラム */
.curriculum {
    padding: 80px 0;
    background: var(--surface-soft);
}

.curriculum-table {
    margin: 50px auto 0;
    display: grid;
    gap: 20px;
    max-width: 900px;
}

.curriculum-item {
    background: var(--white);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.curriculum-header {
    display: flex;
    align-items: center;
    padding: 20px 30px;
    background: var(--primary-color);
    color: white;
}

.curriculum-number {
    background: white;
    color: var(--primary-color);
    padding: 5px 15px;
    border-radius: 20px;
    font-weight: bold;
    margin-right: 20px;
    white-space: nowrap;
}

.curriculum-header h3 {
    font-size: 22px;
}

.curriculum-content {
    padding: 20px 30px;
}

.curriculum-topics {
    font-size: 18px;
    color: var(--gray-dark);
    margin-bottom: 10px;
}

.curriculum-goal {
    font-size: 20px;
    color: var(--primary-dark);
    font-weight: 600;
}

/* サポート */
.support {
    padding: 80px 0;
    background: var(--white);
}

.support-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-top: 50px;
}

.support-item {
    text-align: center;
    padding: 30px;
    border: 2px solid var(--gray-light);
    border-radius: 10px;
    transition: all 0.3s ease;
    background-color: #fff;
}

.support-item h3 {
    font-size: 24px;
    margin-bottom: 15px;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.support-item h3 .icon {
    font-size: 28px;
}

.support-item p {
    font-size: 18px;
}

/* 実績 */
.results {
    padding: 80px 0;
    background: var(--surface-soft);
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.result-card {
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.result-badge {
    display: inline-block;
    background: var(--accent-gold);
    color: var(--black);
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: bold;
    margin-bottom: 15px;
}

.result-card h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: var(--black);
}

.result-card p {
    font-size: 18px;
}

/* 受講者の声 */
.testimonials {
    padding: 80px 0;
    background: var(--white);
}

.testimonials-slider {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.testimonial-card {
    background: var(--surface-warm);
    padding: 30px;
    border-radius: 10px;
    position: relative;
    box-shadow: var(--shadow);
}

.testimonial-card::before {
    content: '"';
    position: absolute;
    top: 10px;
    left: 20px;
    font-size: 60px;
    color: var(--primary-color);
    opacity: 0.3;
}

.testimonial-content {
    font-size: 18px;
    margin-bottom: 20px;
    font-style: italic;
    line-height: 1.8;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 15px;
}

.testimonial-author img {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    object-fit: cover;
}

.author-name {
    font-weight: bold;
    color: var(--black);
}

/* 料金プラン */
.pricing {
    padding: 80px 0;
    background: var(--surface-soft);
}

.pricing-note {
    text-align: center;
    color: var(--primary-color);
    font-weight: bold;
    margin-bottom: 40px;
}

.pricing-table {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.price-card {
    background: var(--white);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    position: relative;
}

.price-card.featured {
    transform: scale(1.05);
    box-shadow: 0 20px 48px rgba(74, 35, 156, 0.22);
}

.price-header {
    padding: 30px;
    text-align: center;
    position: relative;
}

.price-header.gold {
    background: var(--secondary-color);
}

.price-header.platinum {
    background: var(--primary-color);
}

.price-header.master {
    background: var(--secondary-color);
}

.price-header h3 {
    color: white;
    font-size: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
}

.price-header h3 .icon {
    margin-top: 8px;
    font-size: 32px;
    color: inherit;
}

.price-header.gold .icon,
.price-header.master .icon,
.price-header.platinum .icon {
    color: white;
}

.popular {
    position: absolute;
    top: 10px;
    right: 10px;
    background: var(--primary-dark);
    color: var(--white);
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: bold;
}

.price-features {
    padding: 30px;
}

.price-features ul {
    list-style: none;
}

.price-features li {
    font-size: 18px;
    padding: 10px 0;
    border-bottom: 1px solid var(--gray-light);
    display: flex;
    align-items: center;
    gap: 12px;
}

.price-features li .icon {
    font-size: 22px;
}

.price-features li.disabled {
    color: rgba(101, 95, 118, 0.45);
}

.price-features li.disabled .icon {
    color: rgba(101, 95, 118, 0.45);
}

.price-details {
    padding: 30px;
    background: var(--surface-soft);
}

.original-price,
.monitor-price {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--gray-light);
}

.original-price span:first-child,
.monitor-price span:first-child {
    font-weight: bold;
    color: var(--gray-dark);
}

.tax {
    font-size: 12px;
    color: rgba(101, 95, 118, 0.75);
}

.special-price {
    background: var(--primary-color);
    color: white;
    padding: 15px;
    border-radius: 10px;
    margin-top: 20px;
}

.special-price .label {
    display: block;
    font-size: 16px;
    font-weight: bold;
    margin-bottom: 10px;
    color: var(--accent-gold);
}

.special-price .price {
    font-size: 32px;
    font-weight: bold;
    color: white;
}

/* 申し込みフロー */
.flow {
    padding: 80px 0;
    background: white;
}

.flow-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-top: 50px;
    align-items: center;
}

.flow-step {
    text-align: center;
    padding: 30px 20px;
    background: var(--white);
    border-radius: 12px;
    position: relative;
}

.step-number {
    background: var(--primary-color);
    color: white;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: bold;
    display: inline-block;
    margin-bottom: 15px;
    display: grid;
    place-content: center;
}

.flow-step h3 {
    font-size: 18px;
    margin-bottom: 10px;
    color: var(--black);
}

.flow-arrow-horizontal {
    color: var(--primary-color);
    font-size: 30px;
    text-align: center;
}

/* タイムライングラデーション（申し込みフロー用） */
.timeline-gradient {
    position: relative;
    padding-left: 60px;
    min-height: 400px;
    max-width: 800px;
    margin: 50px auto 0;
}

.timeline-gradient::before {
    content: '';
    position: absolute;
    left: 24px;
    top: 20px;
    bottom: 20px;
    width: 4px;
    background: var(--primary-color);
    border-radius: 2px;
}

.timeline-gradient .step {
    position: relative;
    margin-bottom: 60px;
    opacity: 0;
    animation: fadeInLeft 0.5s ease forwards;
}

.timeline-gradient .step:nth-child(1) {
    animation-delay: 0.1s;
}

.timeline-gradient .step:nth-child(2) {
    animation-delay: 0.2s;
}

.timeline-gradient .step:nth-child(3) {
    animation-delay: 0.3s;
}

.timeline-gradient .step:nth-child(4) {
    animation-delay: 0.4s;
}

.timeline-gradient .step-marker {
    position: absolute;
    left: -50px;
    top: 10px;
    width: 32px;
    height: 32px;
    background: white;
    border-radius: 50%;
    border: 4px solid var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    color: var(--primary-color);
    box-shadow: 0 8px 18px rgba(74, 35, 156, 0.22);
    transition: all 0.3s ease;
}


.timeline-gradient .step-content {
    background: var(--white);
    padding: 20px 25px;
    border-radius: 15px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}


.timeline-gradient .step-title {
    font-weight: bold;
    color: var(--primary-color);
    margin-bottom: 8px;
    font-size: 24px;
}

.timeline-gradient .step-desc {
    color: var(--gray-dark);
    font-size: 18px;
    line-height: 1.5;
}

@media (max-width: 640px) {
    .timeline-gradient::before {
        left: 17px;
    }
}

/* FAQ */
.faq {
    padding: 80px 0;
    background: var(--white);
}

.faq-list {
    max-width: 800px;
    margin: 50px auto 0;
}

.faq-item {
    background: var(--white);
    margin-bottom: 20px;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.faq-question {
    width: 100%;
    padding: 25px 30px;
    background: var(--white);
    border: none;
    text-align: left;
    font-size: 20px;
    font-weight: bold;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background 0.3s;
}

.faq-question:hover {
    background: rgba(108, 60, 207, 0.08);
}

.faq-toggle {
    font-size: 24px;
    transition: transform 0.3s;
}

.faq-item.active .faq-toggle {
    transform: rotate(45deg);
}

.faq-answer {
    padding: 0 30px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-item.active .faq-answer {
    padding: 20px 30px 30px;
    max-height: 500px;
    font-size: 18px;
}

/* LINE登録導入セクション */
.line-offer {
    padding: 90px 0;
    background: var(--surface-warm);
}

.line-offer-heading {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 56px;
    position: relative;
}

.line-offer-badge {
    display: inline-block;
    padding: 6px 16px;
    margin-bottom: 20px;
    font-size: 14px;
    font-weight: bold;
    color: var(--primary-dark);
    background: rgba(108, 60, 207, 0.12);
    border-radius: 999px;
    letter-spacing: 0.08em;
}

.line-offer-title {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    margin-bottom: 24px;
    position: relative;
}

.line-offer-title::before {
    left: -80px;
}

.line-offer-title::after {
    right: -80px;
    transform: scaleX(-1);
}

.line-offer-title-main {
    font-size: 22px;
    font-weight: 600;
    color: var(--primary-color);
    letter-spacing: 0.1em;
}

.line-offer-title-highlight {
    font-size: clamp(34px, 4vw, 46px);
    font-weight: 800;
    color: var(--primary-dark);
    letter-spacing: 0.03em;
    display: inline-block;
}

.line-offer-lead {
    font-size: 18px;
    color: var(--gray-dark);
    margin-bottom: 12px;
}

.line-offer-body {
    display: flex;
    flex-direction: column;
    gap: 36px;
}

.line-benefits {
    background: var(--white);
    border-radius: 18px;
    padding: 32px;
    box-shadow: var(--shadow);
}

.line-benefits-feature {
    display: grid;
    gap: 24px;
}

.line-benefit-feature-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
    padding: 20px 24px;
    background: var(--surface-warm);
    border: 1.5px solid rgba(108, 60, 207, 0.16);
    border-radius: 16px;
    box-shadow: 0 14px 30px rgba(74, 35, 156, 0.14);
}

.line-benefit-feature-media {
    width: 100%;
    border-radius: 14px;
    overflow: hidden;
    box-shadow: 0 10px 24px rgba(74, 35, 156, 0.12);
}

.line-benefit-feature-media img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.line-benefit-feature-content {
    display: flex;
    flex-direction: column;
    width: 100%;
    gap: 10px;
}

.line-benefit-feature-description {
    font-size: 16px;
    color: var(--gray);
    line-height: 1.6;
}

.line-benefit-feature-label {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 6px 14px;
    border-radius: 999px;
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 0.06em;
    color: var(--primary-dark);
    background: rgba(108, 60, 207, 0.16);
}

.line-benefit-feature-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--gray-dark);
    line-height: 1.4;
    text-align: center;
}

.line-benefit-feature-card--list {
    flex-direction: column;
    align-items: flex-start;
    gap: 20px;
}

.line-benefit-feature-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 12px;
}

.line-benefit-feature-list li {
    position: relative;
    padding-left: 26px;
    font-size: 16px;
    color: var(--gray-dark);
    line-height: 1.6;
}

.line-benefit-feature-list li::before {
    content: '✔';
    position: absolute;
    left: 0;
    top: 2px;
    color: var(--secondary-color);
    font-weight: 700;
}

@media (min-width: 900px) {
    .line-benefits-feature {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

.line-flow {
    background: var(--white);
    border-radius: 18px;
    padding: 32px;
    box-shadow: var(--shadow);
}

.line-offer-subtitle {
    font-size: 28px;
    color: var(--primary-dark);
    margin-bottom: 28px;
}

.line-benefits-grid {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
    gap: 16px 24px;
}

.line-benefit-card {
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 16px;
    padding: 18px 20px;
    background: var(--surface-warm);
    border: 1.5px solid rgba(108, 60, 207, 0.16);
    border-radius: 14px;
    box-shadow: 0 14px 30px rgba(74, 35, 156, 0.14);
}

.line-benefit-number {
    width: 46px;
    height: 46px;
    border-radius: 50%;
    background: var(--primary-color);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 17px;
    letter-spacing: 0.04em;
}

.line-benefit-texts {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.line-benefit-caption {
    font-size: 16px;
    color: var(--gray);
    letter-spacing: 0.02em;
}

.line-benefit-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--gray-dark);
}

.line-benefit-icon {
    font-size: 30px;
    color: var(--primary-dark);
    background: rgba(108, 60, 207, 0.12);
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.line-flow-list {
    list-style: none;
    counter-reset: line-step;
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.line-flow-item {
    position: relative;
    padding: 22px 22px 24px;
    border: 1px solid rgba(108, 60, 207, 0.18);
    border-radius: 16px;
    background: var(--surface-soft);
    box-shadow: 0 14px 30px rgba(74, 35, 156, 0.1);
}

/* .line-flow-item::before {
    counter-increment: line-step;
    content: counter(line-step, decimal-leading-zero);
    position: absolute;
    left: 24px;
    top: 24px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 16px;
    box-shadow: 0 10px 24px rgba(74, 35, 156, 0.22);
} */

.line-flow-item h4 {
    font-size: 22px;
    color: var(--primary-dark);
    margin-bottom: 6px;
}

.line-flow-item p {
    color: var(--gray-dark);
    font-size: 16px;
    line-height: 1.6;
}

.line-flow-arrow {
    position: absolute;
    left: 44px;
    bottom: -34px;
    width: 20px;
    height: 34px;
}

.line-flow-arrow::before {
    content: '';
    position: absolute;
    left: 8px;
    top: 0;
    width: 4px;
    height: 26px;
    border-radius: 999px;
    background: linear-gradient(180deg, var(--primary-color) 0%, rgba(108, 60, 207, 0.45) 100%);
}

.line-flow-arrow::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 0;
    height: 0;
    border-left: 10px solid transparent;
    border-right: 10px solid transparent;
    border-top: 12px solid rgba(108, 60, 207, 0.45);
}

.line-flow-item:last-child .line-flow-arrow {
    display: none;
}

.line-offer-footer {
    margin-top: 48px;
    text-align: center;
}

.line-offer-note {
    font-size: 13px;
    color: var(--gray);
    line-height: 1.7;
    margin-bottom: 26px;
}

@media (max-width: 640px) {
    .line-offer {
        padding: 70px 0;
    }

    .line-offer-body {
        gap: 28px;
    }

    .line-benefits,
    .line-flow {
        padding: 26px;
    }

    .line-benefits-feature {
        grid-template-columns: 1fr;
    }

    .line-benefit-feature-card {
        flex-direction: column;
        text-align: center;
        padding: 18px 20px;
    }

    .line-benefit-feature-media {
        width: 100%;
        max-width: 320px;
        margin: 0 auto;
    }

    .line-benefit-feature-content {
        align-items: center;
    }

    .line-benefit-feature-card--list {
        text-align: left;
        align-items: stretch;
    }

    .line-benefit-feature-card--list .line-benefit-feature-content {
        align-items: stretch;
    }

    .line-flow-item {
        padding: 20px 18px 20px;
    }

    .line-flow-item::before {
        left: 18px;
        top: 20px;
    }

    .line-flow-arrow {
        left: 38px;
    }

    .cause-problems {
        padding-left: 0;
        gap: 20px;
    }

    .cause-problems::before {
        display: none;
    }

    .problem-card {
        padding: 26px 22px;
    }

    .problem-card::before {
        position: static;
        margin-bottom: 10px;
        width: 56px;
        height: 56px;
        font-size: 20px;
    }

    .problem-heading {
        gap: 4px;
    }

    .problem-label {
        font-size: 10px;
        padding: 3px 10px;
        letter-spacing: 0.1em;
    }
}

/* 最終CTA */
.final-cta {
    padding: 100px 0;
    text-align: center;
    color: white;
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
}

.cta-content h2 {
    font-size: clamp(28px, 4vw, 40px);
    margin-bottom: 20px;
}

.cta-subtitle {
    font-size: 20px;
    margin-bottom: 40px;
    opacity: 0.95;
}

.cta-box {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    justify-content: center;
}

.cta-button.large {
    font-size: 22px;
    padding: 20px 50px;
}

.seats-info {
    margin-top: 20px;
    background: white;
    color: var(--black);
    padding: 15px 30px;
    border-radius: 10px;
    display: inline-block;
}

.seats-alert {
    color: var(--primary-color);
    font-weight: bold;
    margin-right: 10px;
}

.seats-count {
    font-size: 24px;
    font-weight: bold;
    color: var(--primary-color);
}

/* フッター */
.footer {
    padding: 50px 0 20px;
    background: var(--black);
    color: white;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 30px;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 20px;
}

.footer-logo {
    width: 80px;
    height: auto;
    display: block;
    flex-shrink: 0;
}

.footer-copy h3 {
    margin-bottom: 10px;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 20px;
}

.footer-section ul {
    list-style: none;
}

.footer-section li {
    margin-bottom: 10px;
}

.footer-section a {
    color: white;
    text-decoration: none;
    opacity: 0.8;
    transition: opacity 0.3s;
}

.footer-section a:hover {
    opacity: 1;
    color: var(--secondary-color);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0.6;
}

/* レスポンシブ対応 */

/* レスポンシブデザイン：お悩みセクション */
@media (max-width: 768px) {
    .problems {
        padding: 60px 0;
    }

    .problems-visual {
        gap: 40px;
        margin-top: 40px;
        padding: 0 20px;
    }

    .problem-item-large {
        padding: 24px;
        grid-template-columns: 1fr !important;
        gap: 0;
    }

    .problem-item-large:nth-child(even) .problem-image {
        order: 0;
    }

    .problem-image {
        height: 200px;
    }

    .problem-text {
        padding-top: 24px;
    }

    .problem-badge {
        font-size: 12px;
        padding: 6px 12px;
    }

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

    .problem-text p {
        font-size: 18px;
    }

    .warning-box {
        font-size: 14px;
        padding: 12px 15px;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }

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

    .nav-container {
        min-height: 70px;
        padding: 8px 20px;
    }

    .logo img {
        height: 44px;
    }

    .hero {
        padding: 120px 0 60px;
    }

    .flow-steps {
        grid-template-columns: 1fr;
    }

    .flow-arrow-horizontal {
        transform: rotate(90deg);
        margin: 10px 0;
    }

    .pricing-table {
        grid-template-columns: 1fr;
    }

    .price-card.featured {
        transform: scale(1);
    }

    .solution-flow {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .cause-problems {
        padding-left: 32px;
    }

    .cause-problems::before {
        left: 10px;
    }

    .problem-card::before {
        left: -34px;
    }

    .cause-problems::before {
        left: 10px;
    }

    .problem-card::before {
        left: -34px;
    }

    /* Cause conclusion flow responsive */
    .flow-arrow-container {
        flex-direction: column;
        gap: 15px;
    }

    .flow-arrow {
        width: 14px;
        height: 56px;
        margin: -6px 0;
    }

    .flow-arrow::before {
        top: 10px;
        bottom: 22px;
        left: 50%;
        right: auto;
        width: 4px;
        height: auto;
        transform: translateX(-50%);
        background: linear-gradient(180deg, var(--primary-color) 0%, var(--accent-gold) 100%);
    }

    .flow-arrow::after {
        top: auto;
        bottom: 6px;
        right: 50%;
        transform: translateX(50%);
        border-left: 7px solid transparent;
        border-right: 7px solid transparent;
        border-top: 16px solid var(--accent-gold);
    }

    .conclusion-text {
        font-size: 20px;
    }

    .highlight-text {
        font-size: 22px;
    }

    .conclusion-emphasis {
        font-size: 24px;
    }

    /* タイムライングラデーションのレスポンシブ */
    .timeline-gradient {
        padding-left: 40px;
    }

    .timeline-gradient .step-marker {
        left: -35px;
        width: 28px;
        height: 28px;
        font-size: 14px;
    }

    .timeline-gradient .step-content {
        padding: 15px 20px;
    }

    .timeline-gradient .step-title {
        font-size: 14px;
    }

    .timeline-gradient .step-desc {
        font-size: 13px;
    }

    /* 解決策セクションのレスポンシブ */
    .solution-flow {
        grid-template-columns: 1fr;
        gap: 32px;
        padding: 0 10px;
    }

    .solution-step {
        padding: 38px 20px 24px;
    }

    .solution-step .step-circle {
        top: -22px;
        left: 20px;
        width: 48px;
        height: 48px;
    }

    .solution-step .step-card .step-icon {
        width: 46px;
        height: 46px;
    }

    .solution-step .step-card h4 {
        font-size: 18px;
    }

    .solution-step .step-card p {
        font-size: 14px;
    }

    /* 原因セクションのレスポンシブ */
    .cause-main-title {
        font-size: 24px;
    }

    .cause-subtitle {
        font-size: 16px;
    }

    .cause-formula {
        padding: 30px 20px;
    }

    .formula-title {
        font-size: 20px;
    }

    .formula-components {
        flex-direction: column;
        gap: 15px;
    }

    .formula-symbol {
        transform: rotate(90deg);
        font-size: 24px;
        margin: 5px 0;
    }

    .component-box {
        min-width: auto;
        width: 100%;
        max-width: 200px;
        padding: 20px 15px;
    }

    .component-icon {
        width: 56px;
        height: 56px;
    }

    .component-icon .icon {
        font-size: 28px;
    }

    .cause-problems {
        padding-left: 28px;
        gap: 24px;
    }

    .cause-problems::before {
        left: 8px;
    }

    .problem-card {
        padding: 30px 26px 28px 48px;
    }

    .problem-card::before {
        left: -30px;
        top: 22px;
        width: 64px;
        height: 64px;
        font-size: 24px;
    }

    .problem-header {
        gap: 12px;
    }

    .problem-header h3 {
        font-size: 18px;
    }

    .problem-content {
        gap: 10px;
    }

    .problem-content p {
        font-size: 15px;
    }

    .conclusion-box {
        padding: 30px 20px;
    }

    .conclusion-icon {
        font-size: 36px;
    }

    .conclusion-text {
        font-size: 18px;
    }

    .solution-hero {
        padding: 30px 20px;
    }

    .solution-title {
        font-size: 24px;
    }

    .solution-subtitle {
        font-size: 16px;
    }

    .solution-step {
        padding: 32px 18px 22px;
    }

    .solution-step .step-circle {
        left: 18px;
        top: -20px;
        width: 44px;
        height: 44px;
    }

    .solution-step .step-card .step-icon {
        width: 42px;
        height: 42px;
    }

    .solution-step .step-card h4 {
        font-size: 17px;
    }

    .solution-step .step-card p {
        font-size: 14px;
    }

    .step-icon {
        width: 40px;
        height: 40px;
    }

    .step-icon .icon {
        font-size: 20px;
    }

    .solution-cta {
        padding: 30px 20px;
    }

    .cta-text {
        font-size: 18px;
    }

    .footer-brand {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }

    .footer-logo {
        width: 64px;
    }
}

/* アニメーション */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease forwards;
}

/* スクロールアニメーション用 */
.scroll-animation {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.scroll-animation.active {
    opacity: 1;
    transform: translateY(0);
}