/* ===========================
   CSS Variables
=========================== */
:root {
    --color-primary: #1a3a6b;
    --color-primary-dark: #112850;
    --color-accent: #e8531a;
    --color-accent-hover: #c94315;
    --color-text: #2c2c2c;
    --color-text-sub: #666;
    --color-bg: #ffffff;
    --color-bg-gray: #f5f6fa;
    --color-bg-dark: #1a3a6b;
    --color-border: #e0e4ec;
    --color-success: #27ae60;
    --color-danger: #e74c3c;
    --color-gold: #c89b2a;
    --radius: 8px;
    --shadow: 0 2px 16px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 24px rgba(0,0,0,0.12);
    --transition: 0.2s ease;
    --header-height: 64px;
    --container-max: 1160px;
}

/* ===========================
   Reset & Base
=========================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
    font-family: 'Noto Sans JP', sans-serif;
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.7;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* ===========================
   Layout
=========================== */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
}
.section { padding: 80px 0; }
.section-gray { background: var(--color-bg-gray); }
.section-dark { background: var(--color-bg-dark); color: #fff; }

.section-title {
    font-size: clamp(1.4rem, 3vw, 2rem);
    font-weight: 700;
    text-align: center;
    margin-bottom: 48px;
    line-height: 1.4;
    text-wrap: balance;
}
.section-title-light { color: #fff; }
.section-lead {
    text-align: center;
    color: var(--color-text-sub);
    margin-bottom: 40px;
    font-size: 1.05rem;
}

/* ===========================
   Buttons
=========================== */
.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: var(--radius);
    font-weight: 700;
    font-size: 0.95rem;
    cursor: pointer;
    transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
    border: 2px solid transparent;
    text-align: center;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary {
    background: var(--color-accent);
    color: #fff;
    border-color: var(--color-accent);
}
.btn-primary:hover { background: var(--color-accent-hover); border-color: var(--color-accent-hover); }
.btn-accent {
    background: var(--color-accent);
    color: #fff;
    border-color: var(--color-accent);
}
.btn-accent:hover { background: var(--color-accent-hover); }
.btn-secondary {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}
.btn-secondary:hover { background: var(--color-primary-dark); }
.btn-outline {
    background: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}
.btn-outline:hover { background: var(--color-primary); color: #fff; }
.btn-header {
    background: var(--color-accent);
    color: #fff;
    padding: 8px 20px;
    font-size: 0.875rem;
    border-radius: var(--radius);
    white-space: nowrap;
}
.btn-header:hover { background: var(--color-accent-hover); }
.btn-lg { padding: 16px 40px; font-size: 1.05rem; }

/* ===========================
   Header
=========================== */
.header {
    position: fixed;
    top: 0; left: 0; right: 0;
    height: var(--header-height);
    background: #fff;
    z-index: 1000;
    border-bottom: 1px solid var(--color-border);
    transition: box-shadow var(--transition);
}
.header.scrolled { box-shadow: var(--shadow); }
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
    gap: 24px;
}
.logo a {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: -0.5px;
}
.nav {
    display: flex;
    align-items: center;
    gap: 8px;
}
.nav ul {
    display: flex;
    align-items: center;
    gap: 4px;
}
.nav ul a {
    padding: 6px 10px;
    font-size: 0.875rem;
    color: var(--color-text);
    border-radius: 4px;
    transition: background var(--transition);
    white-space: nowrap;
}
.nav ul a:hover { background: var(--color-bg-gray); }

/* ハンバーガー */
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 40px; height: 40px;
    background: none; border: none;
    cursor: pointer; padding: 6px;
    border-radius: 4px;
}
.hamburger span {
    display: block;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: transform var(--transition), opacity var(--transition);
}
.hamburger.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.is-open span:nth-child(2) { opacity: 0; }
.hamburger.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===========================
   Hero
=========================== */
.hero {
    padding-top: calc(var(--header-height) + 64px);
    padding-bottom: 80px;
    background: linear-gradient(135deg, #f0f4ff 0%, #e8f0ff 100%);
}
.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
}
.hero-positioning {
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: 0.05em;
    margin-bottom: 16px;
    text-transform: uppercase;
}
.hero-title {
    font-size: clamp(1.5rem, 3.5vw, 2.2rem);
    font-weight: 700;
    line-height: 1.5;
    margin-bottom: 20px;
    text-wrap: balance;
}
.hero-title .highlight { color: var(--color-primary); }
.hero-text {
    color: var(--color-text-sub);
    margin-bottom: 24px;
    line-height: 1.8;
}
.hero-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 12px;
}
.hero-tag {
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    background: #fff;
    color: var(--color-text-sub);
    border: 1px solid var(--color-border);
}
.hero-tag-primary {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}
.hero-btns { margin: 28px 0 16px; }
.hero-note {
    font-size: 0.8rem;
    color: var(--color-text-sub);
    line-height: 1.8;
}

/* Hero Visual */
.hero-visual { display: flex; justify-content: center; }
.hero-screenshot {
    width: 100%;
    max-width: 680px;
    border-radius: 12px;
    box-shadow: var(--shadow-md);
}
.visual-placeholder {
    background: #fff;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    padding: 40px;
    width: 100%;
    max-width: 420px;
    text-align: center;
}
.box-animation {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
    margin-bottom: 16px;
    height: 160px;
    align-items: end;
}
.box {
    border-radius: 4px;
    animation: rise 2s ease-in-out infinite alternate;
}
.box1 { background: #4e9af1; height: 60%; animation-delay: 0s; }
.box2 { background: #e85d1a; height: 100%; animation-delay: 0.2s; }
.box3 { background: #27ae60; height: 75%; animation-delay: 0.4s; }
.box4 { background: #9b59b6; height: 50%; animation-delay: 0.1s; }
.box5 { background: #f39c12; height: 85%; animation-delay: 0.3s; }
.box6 { background: #1abc9c; height: 65%; animation-delay: 0.5s; }
@keyframes rise {
    from { transform: scaleY(0.8); opacity: 0.7; }
    to   { transform: scaleY(1);   opacity: 1; }
}
.visual-caption { font-size: 0.8rem; color: var(--color-text-sub); }

/* ===========================
   Mode Comparison Section
=========================== */
.mode-comparison {
    display: flex;
    align-items: center;
    gap: 24px;
    justify-content: center;
    flex-wrap: wrap;
}
.mode-card {
    background: rgba(255,255,255,0.06);
    border-radius: 16px;
    padding: 24px;
    flex: 1;
    min-width: 280px;
    max-width: 560px;
}
.mode-card-pro {
    background: rgba(232,83,26,0.12);
    border: 1px solid rgba(232,83,26,0.4);
}
.mode-label {
    font-size: 0.9rem;
    font-weight: 700;
    color: rgba(255,255,255,0.7);
    margin-bottom: 12px;
    text-align: center;
}
.mode-label-pro { color: #ffd166; }
.mode-screenshot {
    width: 100%;
    border-radius: 8px;
    margin-bottom: 16px;
}
.mode-stats {
    display: flex;
    flex-direction: column;
    gap: 6px;
}
.mode-stat {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.75);
}
.mode-stat-highlight { color: #fff; }
.mode-diff {
    display: inline-block;
    background: #e8531a;
    color: #fff;
    font-size: 0.75rem;
    font-weight: 700;
    padding: 1px 7px;
    border-radius: 20px;
    margin-left: 6px;
}
.mode-arrow {
    font-size: 2rem;
    color: rgba(255,255,255,0.4);
    flex-shrink: 0;
}

/* ===========================
   Problem Section
=========================== */
.problem-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 48px;
}
.problem-card {
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: var(--radius);
    padding: 28px 24px;
    color: #fff;
}
.problem-num {
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    color: rgba(255,255,255,0.6);
    margin-bottom: 12px;
}
.problem-card p { line-height: 1.8; }
.problem-card strong { color: #ffd166; }

/* Comparison Table */
.comparison-table-wrapper {
    background: rgba(255,255,255,0.08);
    border-radius: 12px;
    padding: 32px;
    margin-bottom: 40px;
}
.comparison-title {
    color: #fff;
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 20px;
    text-align: center;
}
.table-responsive { overflow-x: auto; }
.comparison-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}
.comparison-table th, .comparison-table td {
    padding: 12px 16px;
    text-align: center;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    white-space: nowrap;
}
.comparison-table th {
    font-weight: 700;
    background: rgba(255,255,255,0.05);
    color: rgba(255,255,255,0.9);
}
.comparison-table td { color: rgba(255,255,255,0.85); }
.comparison-table .row-label { text-align: left; white-space: normal; font-weight: 500; }
.highlight-col { background: rgba(232,83,26,0.15) !important; color: #fff !important; }
.highlight-col th { color: #ffd166 !important; }
.check-yes { color: #6ddf9a; font-weight: 700; }
.check-no { color: #ff8080; font-weight: 700; }
.rating-good { color: #6ddf9a; font-weight: 700; }
.rating-poor { color: #ffa07a; }

/* Definition Box */
.definition-box {
    background: rgba(255,255,255,0.08);
    border-left: 4px solid var(--color-accent);
    border-radius: 0 var(--radius) var(--radius) 0;
    padding: 28px 32px;
    margin-bottom: 40px;
}
.definition-box h3 { color: #fff; font-size: 1.1rem; margin-bottom: 12px; }
.definition-box p { color: rgba(255,255,255,0.85); line-height: 1.9; }

/* Problem Summary */
.problem-summary {
    text-align: center;
    padding: 32px;
    background: rgba(255,255,255,0.06);
    border-radius: var(--radius);
}
.problem-summary p { color: #fff; font-size: 1.05rem; font-weight: 500; line-height: 1.9; }
.problem-summary-sub { color: rgba(255,255,255,0.75) !important; font-size: 0.95rem !important; font-weight: 400 !important; margin-top: 12px; }

/* ===========================
   Features
=========================== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.feature-card {
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 28px 24px;
    position: relative;
    transition: box-shadow var(--transition), transform var(--transition);
}
.feature-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.feature-card-pro { border-color: var(--color-gold); border-width: 2px; }
.feature-icon {
    font-size: 2rem;
    font-weight: 900;
    color: var(--color-primary);
    opacity: 0.15;
    margin-bottom: 8px;
    line-height: 1;
}
.feature-card h3 { font-size: 1rem; font-weight: 700; margin-bottom: 10px; line-height: 1.5; }
.feature-card p { font-size: 0.875rem; color: var(--color-text-sub); line-height: 1.8; }
.feature-note { font-size: 0.8rem !important; color: #999 !important; margin-top: 8px; }
.badge-pro {
    display: inline-block;
    background: var(--color-gold);
    color: #fff;
    font-size: 0.7rem;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: 4px;
    margin-bottom: 8px;
    letter-spacing: 0.05em;
}

/* ===========================
   Scope
=========================== */
.scope-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.scope-card {
    background: #fff;
    border-radius: 12px;
    padding: 32px;
    box-shadow: var(--shadow);
}
.scope-card-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}
.scope-card-header h3 { font-size: 1.1rem; font-weight: 700; }
.scope-icon { font-size: 1.4rem; font-weight: 700; }
.scope-icon-yes { color: var(--color-success); }
.scope-icon-no { color: var(--color-danger); }
.scope-list li {
    padding: 8px 0;
    border-bottom: 1px solid var(--color-bg-gray);
    font-size: 0.9rem;
    line-height: 1.6;
}
.scope-list li:last-child { border-bottom: none; }
.scope-can .scope-list li::before { content: "✓ "; color: var(--color-success); font-weight: 700; }
.scope-cannot .scope-list li::before { content: "✗ "; color: var(--color-danger); font-weight: 700; }

/* ===========================
   Flow Steps
=========================== */
.flow-steps {
    display: flex;
    align-items: flex-start;
    gap: 8px;
}
.flow-step {
    flex: 1;
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 28px 20px;
}
.step-num {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--color-accent);
    letter-spacing: 0.1em;
    margin-bottom: 10px;
}
.flow-step h3 { font-size: 1rem; font-weight: 700; margin-bottom: 10px; line-height: 1.5; }
.flow-step p { font-size: 0.875rem; color: var(--color-text-sub); line-height: 1.8; }
.flow-arrow {
    font-size: 1.5rem;
    color: var(--color-primary);
    opacity: 0.4;
    align-self: center;
    flex-shrink: 0;
    padding-top: 0;
}

/* ===========================
   Data
=========================== */
.data-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.data-block h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 16px; }
.data-required-cols { display: flex; flex-direction: column; gap: 8px; margin-bottom: 16px; }
.data-col-item {
    display: flex;
    align-items: center;
    gap: 12px;
    background: #fff;
    padding: 10px 16px;
    border-radius: var(--radius);
    border: 1px solid var(--color-border);
}
.data-col-num {
    width: 28px; height: 28px;
    background: var(--color-primary);
    color: #fff;
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 0.8rem; font-weight: 700;
    flex-shrink: 0;
}
.data-col-name { font-weight: 500; font-size: 0.9rem; }
.data-col-note { font-size: 0.825rem; color: var(--color-text-sub); line-height: 1.8; }

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.825rem;
}
.data-table th {
    background: var(--color-primary);
    color: #fff;
    padding: 10px 12px;
    text-align: left;
    white-space: nowrap;
}
.data-table td {
    padding: 10px 12px;
    border-bottom: 1px solid var(--color-border);
    background: #fff;
}
.data-table tr:nth-child(even) td { background: var(--color-bg-gray); }

/* ===========================
   Environment
=========================== */
.env-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}
.env-item {
    background: var(--color-bg-gray);
    border-radius: var(--radius);
    padding: 20px;
}
.env-label {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 6px;
}
.env-value { font-size: 0.9rem; font-weight: 500; line-height: 1.6; }
.env-value small { display: block; font-size: 0.775rem; color: var(--color-text-sub); font-weight: 400; }

/* ===========================
   Pricing
=========================== */
.pricing-subcopy {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 48px;
    color: var(--color-text-sub);
    line-height: 1.9;
}
.pricing-subcopy p { margin-bottom: 8px; }
.pricing-subcopy-cta { font-weight: 700; color: var(--color-primary) !important; font-size: 1.05rem; }

.pricing-section-title {
    font-size: 1.2rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 24px;
    color: var(--color-primary);
}
.pricing-section-title-sub { margin-top: 56px; color: var(--color-text); }

/* Plan badges */
.plan-badge {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 700;
    padding: 3px 10px;
    border-radius: 4px;
    letter-spacing: 0.05em;
    margin-bottom: 8px;
}
.badge-trial { background: #e0e0e0; color: #555; }
.badge-standard { background: var(--color-primary); color: #fff; }
.badge-pro { background: var(--color-gold); color: #fff; }

/* Pricing Cards (Buy-once) */
.pricing-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 32px;
}
.pricing-card {
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 32px 28px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.pricing-card.featured {
    border-color: var(--color-gold);
    border-width: 2px;
    box-shadow: 0 4px 24px rgba(200,155,42,0.15);
}
.pricing-card h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 4px; }
.price { font-size: 1.8rem; font-weight: 900; color: var(--color-primary); margin: 8px 0 2px; }
.price-unit { font-size: 0.9rem; font-weight: 400; color: var(--color-text-sub); }
.price-detail { font-size: 0.8rem; color: var(--color-text-sub); margin-bottom: 16px; }

.pricing-features {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 24px;
}
.pricing-features li {
    font-size: 0.875rem;
    padding: 4px 0;
    border-bottom: 1px solid var(--color-bg-gray);
    line-height: 1.5;
}
.feat-yes::before { content: "✓ "; color: var(--color-success); font-weight: 700; }
.feat-no { color: #bbb; }
.feat-no::before { content: "✗ "; color: #ccc; font-weight: 700; }
.feat-highlight { color: var(--color-gold); font-weight: 700; }
.feat-note { font-size: 0.75rem; color: var(--color-text-sub); display: block; }
.pricing-card .btn { width: 100%; margin-top: auto; }

/* Maintenance box */
.maintenance-box {
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 28px 32px;
    margin-bottom: 0;
}
.maintenance-info h4 { font-size: 1rem; font-weight: 700; margin-bottom: 8px; }
.maintenance-info > p { font-size: 0.95rem; font-weight: 500; color: var(--color-primary); margin-bottom: 12px; }
.maintenance-info ul { display: flex; flex-direction: column; gap: 6px; }
.maintenance-info ul li { font-size: 0.875rem; color: var(--color-text-sub); padding-left: 16px; position: relative; }
.maintenance-info ul li::before { content: "・"; position: absolute; left: 0; }
.maintenance-note { font-size: 0.8rem; color: var(--color-text-sub); margin-top: 12px; }

/* Subscription ROI callout */
.subscription-lead {
    text-align: center;
    color: var(--color-text-sub);
    margin-bottom: 20px;
}
.subscription-roi {
    display: flex;
    align-items: center;
    gap: 16px;
    background: #fffbf0;
    border: 1px solid #f0d080;
    border-radius: var(--radius);
    padding: 16px 24px;
    margin-bottom: 28px;
    font-size: 0.9rem;
    line-height: 1.7;
}
.roi-icon-wrap { font-size: 1.5rem; flex-shrink: 0; }

/* Subscription Cards */
.subscription-cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    max-width: 640px;
    margin: 0 auto 16px;
}
.sub-card {
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 28px 24px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
}
.sub-card.featured {
    border-color: var(--color-gold);
    border-width: 2px;
    box-shadow: 0 4px 20px rgba(200,155,42,0.12);
}
.sub-card h4 { font-size: 1rem; font-weight: 700; }
.sub-price { font-size: 2rem; font-weight: 900; color: var(--color-primary); }
.sub-unit { font-size: 1rem; font-weight: 400; }
.sub-billing { font-size: 0.825rem; color: var(--color-text-sub); }
.sub-note { font-size: 0.8rem; color: var(--color-text-sub); line-height: 1.7; margin: 4px 0 12px; }
.sub-card .btn { width: 100%; }
.subscription-caution {
    text-align: center;
    font-size: 0.8rem;
    color: var(--color-text-sub);
    line-height: 1.8;
    margin-bottom: 0;
}

/* ROI Examples */
.pricing-roi {
    background: #fff;
    border-radius: 12px;
    padding: 32px;
    margin-top: 48px;
    border: 1px solid var(--color-border);
}
.pricing-roi h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 8px; }
.roi-intro { color: var(--color-text-sub); margin-bottom: 24px; font-size: 0.9rem; }
.roi-examples { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-bottom: 16px; }
.roi-card {
    background: var(--color-bg-gray);
    border-radius: var(--radius);
    padding: 20px;
}
.roi-label {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--color-accent);
    letter-spacing: 0.1em;
    margin-bottom: 8px;
}
.roi-condition { font-size: 0.9rem; margin-bottom: 6px; }
.roi-result { font-size: 0.9rem; color: var(--color-success); font-weight: 500; margin-bottom: 6px; }
.roi-payback { font-size: 0.9rem; font-weight: 700; color: var(--color-primary); }
.roi-note { font-size: 0.8rem; color: var(--color-text-sub); line-height: 1.8; }

/* ===========================
   Challenge Section（既存ソフトユーザー向け）
=========================== */
.section-challenge {
    background: linear-gradient(135deg, #0f2547 0%, #1a3a6b 100%);
}
.challenge-box {
    max-width: 720px;
    margin: 0 auto;
    text-align: center;
    color: #fff;
}
.challenge-label {
    display: inline-block;
    background: rgba(232,83,26,0.9);
    color: #fff;
    font-size: 0.8rem;
    font-weight: 700;
    padding: 4px 16px;
    border-radius: 20px;
    letter-spacing: 0.05em;
    margin-bottom: 20px;
}
.challenge-title {
    font-size: clamp(1.3rem, 3vw, 1.8rem);
    font-weight: 700;
    line-height: 1.5;
    margin-bottom: 20px;
    text-wrap: balance;
}
.challenge-text {
    color: rgba(255,255,255,0.8);
    line-height: 1.9;
    margin-bottom: 32px;
    font-size: 0.95rem;
}
.challenge-points {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 32px;
    text-align: left;
    background: rgba(255,255,255,0.07);
    border-radius: var(--radius);
    padding: 24px 28px;
}
.challenge-point {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.95rem;
    color: rgba(255,255,255,0.9);
}
.cp-icon { font-size: 1.1rem; flex-shrink: 0; }
.challenge-note {
    margin-top: 12px;
    font-size: 0.8rem;
    color: rgba(255,255,255,0.5);
}

/* Purchase flow */
.purchase-flow {
    margin-top: 40px;
    background: #fff;
    border-radius: 12px;
    padding: 32px;
    border: 1px solid var(--color-border);
}
.purchase-flow h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 20px; }
.purchase-steps {
    display: flex;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 8px;
}
.purchase-step {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    flex: 1;
    min-width: 140px;
}
.p-step-num {
    width: 28px; height: 28px;
    background: var(--color-primary);
    color: #fff;
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 0.8rem; font-weight: 700;
    flex-shrink: 0;
    margin-top: 2px;
}
.purchase-step p { font-size: 0.85rem; line-height: 1.7; }
.purchase-arrow {
    color: var(--color-primary);
    opacity: 0.4;
    font-size: 1.2rem;
    align-self: center;
    flex-shrink: 0;
}

/* Pricing notes */
.pricing-notes {
    margin-top: 32px;
    background: var(--color-bg-gray);
    border-radius: var(--radius);
    padding: 24px 28px;
}
.pricing-notes h3 { font-size: 0.95rem; font-weight: 700; margin-bottom: 12px; }
.pricing-notes ul { display: flex; flex-direction: column; gap: 6px; }
.pricing-notes li { font-size: 0.875rem; color: var(--color-text-sub); padding-left: 16px; position: relative; }
.pricing-notes li::before { content: "・"; position: absolute; left: 0; }

/* ===========================
   FAQ
=========================== */
.faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 4px; }
.faq-item { border: 1px solid var(--color-border); border-radius: var(--radius); overflow: hidden; }
.faq-question {
    width: 100%;
    text-align: left;
    padding: 18px 24px;
    font-size: 0.95rem;
    font-weight: 700;
    background: #fff;
    border: none;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    transition: background var(--transition);
    font-family: inherit;
    color: var(--color-text);
    line-height: 1.5;
}
.faq-question:hover { background: var(--color-bg-gray); }
.faq-question::after {
    content: "+";
    font-size: 1.2rem;
    color: var(--color-primary);
    flex-shrink: 0;
    transition: transform var(--transition);
}
.faq-question[aria-expanded="true"]::after { transform: rotate(45deg); }
.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    background: #fff;
}
.faq-answer p {
    padding: 0 24px 16px;
    font-size: 0.9rem;
    color: var(--color-text-sub);
    line-height: 1.9;
}
.faq-answer p:first-child { padding-top: 4px; }

/* ===========================
   Contact
=========================== */
.contact-box {
    max-width: 560px;
    margin: 0 auto;
    text-align: center;
    background: #fff;
    border-radius: 16px;
    padding: 48px 40px;
    box-shadow: var(--shadow);
}
.contact-lead { margin-bottom: 20px; line-height: 1.9; }
.contact-email {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 20px;
}
.contact-email a {
    color: var(--color-primary);
    border-bottom: 2px solid var(--color-primary);
    padding-bottom: 2px;
}
.contact-developer { color: var(--color-text-sub); font-size: 0.9rem; line-height: 1.9; margin-bottom: 16px; }
.contact-note { font-size: 0.8rem; color: var(--color-text-sub); line-height: 1.8; }

/* ===========================
   Custom Box
=========================== */
.custom-box {
    max-width: 640px;
    margin: 0 auto;
    text-align: center;
    background: var(--color-bg-gray);
    border-radius: 12px;
    padding: 40px;
    border: 1px solid var(--color-border);
}
.custom-box h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 12px; }
.custom-box p { color: var(--color-text-sub); margin-bottom: 24px; line-height: 1.9; font-size: 0.9rem; }

/* ===========================
   Footer
=========================== */
.footer {
    background: var(--color-primary-dark);
    color: rgba(255,255,255,0.7);
    padding: 48px 0 32px;
}
.footer-logo {
    text-align: center;
    font-size: 1.3rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 20px;
}
.footer-nav {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 8px 20px;
    margin-bottom: 24px;
}
.footer-nav a {
    font-size: 0.85rem;
    color: rgba(255,255,255,0.6);
    transition: color var(--transition);
}
.footer-nav a:hover { color: #fff; }
.footer-disclaimer {
    text-align: center;
    font-size: 0.775rem;
    line-height: 1.8;
    margin-bottom: 16px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}
.copyright { text-align: center; font-size: 0.8rem; }

/* ===========================
   Responsive
=========================== */
@media (max-width: 960px) {
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .pricing-cards { grid-template-columns: 1fr; max-width: 440px; margin-left: auto; margin-right: auto; }
    .purchase-steps { flex-direction: column; }
    .purchase-arrow { transform: rotate(90deg); align-self: center; }
    .roi-examples { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    :root { --header-height: 56px; }
    .section { padding: 56px 0; }
    .section-title { margin-bottom: 32px; }

    /* Nav mobile */
    .hamburger { display: flex; }
    .nav {
        display: none;
        position: fixed;
        top: var(--header-height);
        left: 0; right: 0;
        background: #fff;
        border-top: 1px solid var(--color-border);
        padding: 16px 24px 24px;
        flex-direction: column;
        align-items: stretch;
        gap: 4px;
        box-shadow: var(--shadow-md);
    }
    .nav.is-open { display: flex; }
    .nav ul { flex-direction: column; gap: 0; }
    .nav ul a { display: block; padding: 12px 8px; font-size: 1rem; }
    .btn-header { display: block; text-align: center; margin-top: 8px; padding: 12px; }

    /* Hero */
    .hero { padding-top: calc(var(--header-height) + 40px); padding-bottom: 48px; }
    .hero-container { grid-template-columns: 1fr; }
    .hero-visual { display: none; }
    .hero-title { font-size: 1.5rem; }

    /* Problem */
    .problem-cards { grid-template-columns: 1fr; }
    .comparison-table-wrapper { padding: 20px 16px; }

    /* Features */
    .features-grid { grid-template-columns: 1fr; }

    /* Scope */
    .scope-grid { grid-template-columns: 1fr; }

    /* Flow */
    .flow-steps { flex-direction: column; }
    .flow-arrow { align-self: center; transform: rotate(90deg); }

    /* Data */
    .data-grid { grid-template-columns: 1fr; }

    /* Env */
    .env-grid { grid-template-columns: repeat(2, 1fr); }

    /* Subscription cards */
    .subscription-cards { grid-template-columns: 1fr; max-width: 360px; }

    /* Contact */
    .contact-box { padding: 32px 24px; }
}

@media (max-width: 480px) {
    .env-grid { grid-template-columns: 1fr; }
    .hero-tags { gap: 6px; }
    .hero-tag { font-size: 0.75rem; }
    .pricing-card { padding: 24px 20px; }
}