/* File2u.link PDF共有 LP */

:root {
    --primary: #155fa0;
    --primary-mid: #1e72c0;
    --primary-light: #2684e8;
    --primary-dark: #0e3f7a;
    --primary-bg: #e8f2fb;
    --primary-bg-light: #f0f7ff;
    --teal: #00897b;
    --teal-light: #00acc1;
    --teal-bg: #e0f5f1;
    --accent: #e65100;
    --text: #1a1a2e;
    --text-mid: #383850;
    --text-light: #5a5a72;
    --white: #ffffff;
    --gray-bg: #f5f7fa;
    --border: #d6e8f5;
}

* { padding: 0; margin: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: 'Noto Sans JP', "ヒラギノ角ゴ Pro W3", "Hiragino Kaku Gothic Pro", "メイリオ", Meiryo, sans-serif;
    color: var(--text);
    background: var(--white);
    font-size: 15px;
    line-height: 1.7;
}
img { max-width: 100%; height: auto; }
a { text-decoration: none; }
p { margin: 0; }

/* ===== Nav ===== */
.lp-nav {
    position: sticky; top: 0; z-index: 1000;
    background: var(--white);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}
.lp-nav-inner {
    max-width: 1200px; margin: 0 auto; padding: 0 32px;
    height: 64px; display: flex; align-items: center; justify-content: space-between;
}
.lp-logo img { height: 30px; }
.lp-nav-links { display: flex; align-items: center; gap: 28px; }
.lp-nav-links a { font-size: 14px; font-weight: 700; color: var(--text); }
.lp-nav-links a:hover { color: var(--primary-light); }
.btn-nav {
    background: var(--primary); color: var(--white) !important;
    padding: 8px 20px; border-radius: 6px; font-weight: 700; transition: background 0.2s;
}
.btn-nav:hover { background: var(--primary-dark) !important; }

/* ===== Buttons ===== */
.btn-primary {
    display: inline-block; background: var(--primary); color: var(--white) !important;
    padding: 14px 32px; border-radius: 8px; font-weight: 700; font-size: 15px;
    transition: background 0.2s, transform 0.15s;
}
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-1px); }
.btn-secondary {
    display: inline-block; background: var(--white); color: var(--primary) !important;
    padding: 13px 32px; border-radius: 8px; font-weight: 700; font-size: 15px;
    border: 2px solid var(--primary); transition: all 0.2s;
}
.btn-secondary:hover { background: var(--primary-bg); transform: translateY(-1px); }
.btn-cta {
    display: inline-block; background: var(--accent); color: var(--white) !important;
    padding: 14px 32px; border-radius: 8px; font-weight: 700; font-size: 15px;
    transition: background 0.2s, transform 0.15s;
}
.btn-cta:hover { background: #f4511e; transform: translateY(-1px); }
.btn-large { padding: 18px 52px !important; font-size: 17px !important; }

/* ===== Shared Section ===== */
.section-inner { max-width: 1100px; margin: 0 auto; padding: 88px 32px; }
.section-header { text-align: center; margin-bottom: 60px; }
.section-header h2 { font-size: 32px; font-weight: 900; line-height: 1.45; margin-bottom: 18px; }
.section-header p { font-size: 15px; color: var(--text-light); line-height: 1.9; }
.section-header p + p { margin-top: 8px; }
.section-tag {
    display: inline-block; font-size: 12px; font-weight: 700;
    background: var(--primary-bg); color: var(--primary-dark);
    padding: 4px 14px; border-radius: 20px; margin-bottom: 16px;
    letter-spacing: 0.5px; border: 1px solid #b3d0ee;
}

/* ===== 1. Hero ===== */
.hero-section {
    background: linear-gradient(140deg, #0a3060 0%, #155fa0 50%, #1e72c0 100%);
    overflow: hidden; position: relative;
}
.hero-section::after {
    content: ''; position: absolute; top: -120px; right: -120px;
    width: 560px; height: 560px; background: rgba(255,255,255,0.03);
    border-radius: 50%; pointer-events: none;
}
.hero-inner {
    max-width: 1200px; margin: 0 auto; padding: 88px 32px 80px;
    display: grid; grid-template-columns: 1fr 1fr; gap: 64px;
    align-items: center; position: relative; z-index: 1;
}
.hero-badge {
    display: inline-flex; align-items: center; gap: 6px;
    font-size: 12px; font-weight: 700;
    background: rgba(255,255,255,0.16); color: rgba(255,255,255,0.92);
    padding: 5px 14px; border-radius: 20px; margin-bottom: 22px;
    border: 1px solid rgba(255,255,255,0.22); letter-spacing: 0.4px;
}
.hero-text h1 {
    font-size: 38px; font-weight: 900; line-height: 1.4;
    margin-bottom: 24px; color: var(--white);
}
.hero-text h1 em {
    font-style: normal; color: #ffe082;
    border-bottom: 3px solid #ffe082; padding-bottom: 2px;
}
.hero-sub {
    font-size: 16px; font-weight: 700; line-height: 1.75;
    margin-bottom: 16px; color: rgba(255,255,255,0.92);
}
.hero-desc {
    font-size: 14px; color: rgba(255,255,255,0.82);
    line-height: 1.9; margin-bottom: 36px;
}
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 28px; }
.hero-cta .btn-primary {
    background: #ffe082; color: #0a3060 !important;
    box-shadow: 0 4px 16px rgba(255,224,130,0.35);
}
.hero-cta .btn-primary:hover { background: #ffd54f; }
.hero-cta .btn-secondary {
    border-color: rgba(255,255,255,0.45); color: var(--white) !important;
    background: rgba(255,255,255,0.12);
}
.hero-cta .btn-secondary:hover { background: rgba(255,255,255,0.2); }
.hero-note {
    font-size: 13px; color: rgba(255,255,255,0.78);
    background: rgba(0,0,0,0.2); padding: 12px 18px; border-radius: 8px;
    display: inline-block; border-left: 3px solid rgba(255,224,130,0.55); line-height: 1.7;
}
.hero-visual { position: relative; }
.hero-diagram-img { width: 100%; height: auto; display: block; border-radius: 14px; box-shadow: 0 8px 32px rgba(0,0,0,0.3); }

/* ===== 2. Problems ===== */
.problem-section { background: var(--gray-bg); }
.problem-grid {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-bottom: 48px;
}
.problem-card {
    background: var(--white); border-radius: 14px; padding: 26px 20px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.06); border-top: 4px solid #e57373;
    transition: transform 0.2s;
}
.problem-card:hover { transform: translateY(-3px); }
.problem-icon { font-size: 30px; margin-bottom: 12px; display: block; }
.problem-card h3 { font-size: 14px; font-weight: 700; margin-bottom: 8px; }
.problem-card p { font-size: 13px; color: var(--text-light); line-height: 1.65; }
.problem-summary {
    background: var(--white); border-radius: 12px; padding: 28px 40px;
    border-left: 4px solid var(--primary); box-shadow: 0 2px 12px rgba(0,0,0,0.06); text-align: center;
}
.problem-summary p { font-size: 15px; font-weight: 700; line-height: 1.9; }
.problem-summary p + p { margin-top: 10px; font-weight: 400; font-size: 14px; color: var(--text-light); }

/* ===== 3. Solution ===== */
.solution-section { background: var(--white); }
.solution-section .section-header h2 { color: var(--primary-dark); }
.feature-grid {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-bottom: 80px;
}
.feature-card {
    background: var(--primary-bg-light); border-radius: 14px; padding: 26px 18px;
    text-align: center; border: 1px solid #b3d0ee; transition: transform 0.2s, box-shadow 0.2s;
}
.feature-card:hover { transform: translateY(-4px); box-shadow: 0 10px 26px rgba(21,95,160,0.15); }
.feature-icon { width: 52px; height: 52px; margin: 0 auto 14px; }
.feature-icon img { width: 100%; height: 100%; object-fit: contain; }
.feature-card h3 { font-size: 13px; font-weight: 700; margin-bottom: 8px; color: var(--primary-dark); }
.feature-card p { font-size: 12px; color: var(--text-light); line-height: 1.65; }

/* ===== 4. Benefits ===== */
.benefit-heading { text-align: center; margin-bottom: 44px; }
.benefit-heading h2 { font-size: 28px; font-weight: 900; margin-bottom: 12px; color: var(--primary-dark); }
.benefit-heading p { font-size: 15px; color: var(--text-light); }
.benefit-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.benefit-card {
    background: var(--white); border-radius: 14px; padding: 28px 22px;
    box-shadow: 0 2px 16px rgba(0,0,0,0.07); border: 1px solid var(--border);
}
.benefit-num {
    width: 38px; height: 38px; background: var(--primary); color: var(--white);
    border-radius: 50%; display: flex; align-items: center; justify-content: center;
    font-weight: 900; font-size: 15px; margin-bottom: 14px;
}
.benefit-card h3 { font-size: 15px; font-weight: 700; margin-bottom: 10px; }
.benefit-card p { font-size: 14px; color: var(--text-light); line-height: 1.75; }

/* ===== 5. Use Cases ===== */
.usecase-section { background: var(--gray-bg); }
.usecase-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.usecase-card {
    background: var(--white); border-radius: 14px; padding: 24px 18px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05); border-bottom: 3px solid transparent;
    transition: border-color 0.2s, transform 0.2s;
}
.usecase-card:hover { border-bottom-color: var(--primary-mid); transform: translateY(-3px); }
.usecase-icon { font-size: 34px; margin-bottom: 12px; display: block; }
.usecase-card h3 { font-size: 14px; font-weight: 700; margin-bottom: 8px; color: var(--primary-dark); }
.usecase-card p { font-size: 13px; color: var(--text-light); line-height: 1.65; }

/* ===== 6. Steps ===== */
.steps-section { background: linear-gradient(135deg, #0a3060 0%, #155fa0 100%); }
.steps-section .section-inner { padding: 88px 32px; }
.steps-section .section-header h2 { color: var(--white); }
.steps-section .section-header p { color: rgba(255,255,255,0.72); }
.steps-container { display: flex; align-items: flex-start; gap: 16px; }
.step-item {
    flex: 1; background: rgba(255,255,255,0.1); border-radius: 18px; padding: 36px 26px;
    text-align: center; border: 1px solid rgba(255,255,255,0.2); transition: background 0.2s;
}
.step-item:hover { background: rgba(255,255,255,0.15); }
.step-num {
    font-size: 11px; font-weight: 700; background: #ffe082; color: #0a3060;
    display: inline-block; padding: 4px 16px; border-radius: 20px; margin-bottom: 18px; letter-spacing: 1px;
}
.step-icon { font-size: 48px; margin-bottom: 16px; display: block; }
.step-item h3 { font-size: 17px; font-weight: 700; margin-bottom: 12px; color: var(--white); line-height: 1.45; }
.step-item p { font-size: 14px; color: rgba(255,255,255,0.75); line-height: 1.75; }
.step-arrow { font-size: 30px; color: #ffe082; padding-top: 88px; flex-shrink: 0; font-weight: 900; }

/* ===== 7. Comparison (3 columns) ===== */
.comparison-section { background: var(--primary-bg-light); }
.comparison-section .section-header h2 { color: var(--primary-dark); }
.comparison-table-wrap { overflow-x: auto; margin-bottom: 32px; border-radius: 14px; box-shadow: 0 4px 20px rgba(0,0,0,0.08); }
.comparison-table { width: 100%; border-collapse: collapse; background: var(--white); }
.comparison-table thead th {
    padding: 18px 20px; font-size: 14px; font-weight: 700; text-align: left; vertical-align: middle;
}
.comparison-table th:first-child { background: #f0f4f8; color: var(--text); width: 26%; }
.comparison-table th.col-old { background: #f5f5f5; color: #777; width: 25%; }
.comparison-table th.col-cloud { background: #f8f8f8; color: #666; width: 24%; }
.comparison-table th.col-new { background: var(--primary); color: var(--white); width: 25%; }
.comparison-table tbody td {
    padding: 14px 20px; font-size: 13px; border-top: 1px solid var(--border); vertical-align: middle; line-height: 1.6;
}
.comparison-table tbody td:first-child { font-weight: 700; background: #f8fafc; }
.comparison-table tbody td.col-old,
.comparison-table tbody td.col-cloud { color: #888; }
.comparison-table tbody td.col-new { color: var(--primary-dark); font-weight: 600; }
.comparison-table tbody tr:hover td { background: rgba(21,95,160,0.025); }
.comparison-table tbody tr:hover td:first-child { background: #eef3f9; }
.comparison-note {
    background: var(--white); border-radius: 12px; padding: 20px 32px;
    font-size: 14px; color: var(--text-light); border-left: 4px solid var(--primary-mid); line-height: 1.8;
}

/* ===== 8. Security ===== */
.security-section { background: var(--white); }
.security-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.security-card {
    background: var(--primary-bg-light); border-radius: 14px; padding: 28px 22px;
    border: 1px solid #b3d0ee; transition: transform 0.2s, box-shadow 0.2s;
}
.security-card:hover { transform: translateY(-3px); box-shadow: 0 8px 22px rgba(21,95,160,0.1); }
.security-icon { width: 52px; height: 52px; margin-bottom: 16px; }
.security-icon img { width: 100%; height: 100%; object-fit: contain; }
.security-card h3 { font-size: 15px; font-weight: 700; margin-bottom: 10px; color: var(--primary-dark); }
.security-card p { font-size: 14px; color: var(--text-light); line-height: 1.75; }

/* ===== 9. Examples ===== */
.example-section { background: var(--gray-bg); }
.example-tabs { display: flex; gap: 10px; justify-content: center; margin-bottom: 28px; flex-wrap: wrap; }
.example-tab {
    padding: 9px 22px; border-radius: 8px; font-size: 14px; font-weight: 700;
    border: 2px solid var(--border); background: var(--white); color: var(--text-light);
    cursor: pointer; transition: all 0.2s; font-family: inherit;
}
.example-tab.active, .example-tab:hover {
    border-color: var(--primary-mid); color: var(--primary); background: var(--primary-bg);
}
.example-panel { display: none; }
.example-panel.active { display: block; }
.example-box {
    border: 2px solid var(--border); border-radius: 14px; overflow: hidden;
    max-width: 720px; margin: 0 auto 20px; box-shadow: 0 4px 18px rgba(0,0,0,0.07);
}
.example-label {
    background: var(--primary); color: var(--white); font-size: 13px; font-weight: 700;
    padding: 10px 22px; display: flex; align-items: center; gap: 8px;
}
.example-label::before { content: '✉'; font-size: 14px; }
.example-text {
    padding: 26px 30px; background: var(--white); font-size: 14px; line-height: 2.1; color: var(--text);
}
.example-text p { margin-bottom: 14px; }
.example-text p:last-child { margin-bottom: 0; }
.example-url {
    color: var(--primary-dark); font-weight: 700; background: var(--primary-bg);
    padding: 3px 10px; border-radius: 5px; font-family: 'Courier New', monospace; font-size: 13px;
}
.example-note { text-align: center; font-size: 14px; color: var(--text-light); max-width: 640px; margin: 0 auto; line-height: 1.8; }

/* ===== 10. Pricing ===== */
.pricing-section { background: var(--primary-bg-light); }
.pricing-section .section-header h2 { color: var(--primary-dark); }
.pricing-cta { display: flex; gap: 20px; justify-content: center; margin-bottom: 20px; flex-wrap: wrap; }
.pricing-note { text-align: center; font-size: 14px; color: var(--text-light); margin-bottom: 72px; line-height: 1.7; }
.merit-divider { border: none; border-top: 2px solid var(--border); margin: 0 0 60px; }
.merit-heading { text-align: center; margin-bottom: 40px; }
.merit-heading h3 { font-size: 26px; font-weight: 900; color: var(--primary-dark); line-height: 1.45; }
.merit-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.merit-card {
    background: var(--white); border-radius: 14px; padding: 24px 18px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05); border: 1px solid var(--border);
    transition: transform 0.2s, border-color 0.2s;
}
.merit-card:hover { transform: translateY(-3px); border-color: #90bcdb; }
.merit-icon { font-size: 26px; margin-bottom: 10px; display: block; }
.merit-card h4 { font-size: 13px; font-weight: 700; margin-bottom: 7px; color: var(--primary-dark); }
.merit-card p { font-size: 13px; color: var(--text-light); line-height: 1.6; }

/* ===== 11. FAQ ===== */
.faq-section { background: var(--white); }
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid var(--border); }
.faq-question {
    width: 100%; padding: 22px 4px; display: flex; justify-content: space-between;
    align-items: center; background: none; border: none; cursor: pointer;
    text-align: left; font-size: 15px; font-weight: 700; color: var(--text);
    font-family: inherit; gap: 16px; transition: color 0.2s;
}
.faq-question:hover { color: var(--primary-light); }
.faq-question-text { flex: 1; }
.faq-toggle {
    width: 30px; height: 30px; background: var(--primary); color: var(--white);
    border-radius: 50%; display: flex; align-items: center; justify-content: center;
    font-size: 20px; font-weight: 400; flex-shrink: 0; line-height: 1;
    transition: background 0.2s, transform 0.25s;
}
.faq-item.open .faq-toggle { background: var(--primary-dark); transform: rotate(45deg); }
.faq-answer {
    display: none; padding: 0 4px 22px; font-size: 14px; color: var(--text-light); line-height: 1.85;
}
.faq-answer.open { display: block; }
.faq-answer a { color: var(--primary); text-decoration: underline; }

/* ===== 12. Final CTA ===== */
.final-cta-section {
    background: linear-gradient(140deg, #0a3060 0%, #155fa0 60%, #1e72c0 100%);
    text-align: center; position: relative; overflow: hidden;
}
.final-cta-section::before {
    content: ''; position: absolute; bottom: -80px; left: -80px;
    width: 400px; height: 400px; background: rgba(255,255,255,0.04);
    border-radius: 50%; pointer-events: none;
}
.final-cta-section .section-inner { padding: 100px 32px; position: relative; z-index: 1; }
.final-cta-section h2 { font-size: 34px; font-weight: 900; margin-bottom: 20px; color: var(--white); line-height: 1.4; }
.final-cta-section .lead {
    font-size: 16px; color: rgba(255,255,255,0.85); line-height: 1.9; margin-bottom: 44px; display: block;
}
.final-cta-buttons { display: flex; gap: 20px; justify-content: center; flex-wrap: wrap; margin-bottom: 28px; }
.final-cta-section .btn-primary { background: #ffe082; color: #0a3060 !important; box-shadow: 0 4px 18px rgba(255,224,130,0.35); }
.final-cta-section .btn-primary:hover { background: #ffd54f; }
.final-cta-section .btn-cta { background: var(--white); color: var(--primary) !important; }
.final-note { font-size: 14px; color: rgba(255,255,255,0.6); margin: 0; line-height: 1.7; }

/* ===== Footer ===== */
footer { background: #0a0e1e; color: rgba(255,255,255,0.75); }
.site-footer { padding: 64px 32px 40px; max-width: 1100px; margin: 0 auto; }
.footer-columns { display: grid; grid-template-columns: repeat(4, 1fr); gap: 40px; }
.footer-column h4 { color: var(--white); font-size: 14px; font-weight: 700; margin-bottom: 16px; }
.footer-column ul { list-style: none; }
.footer-column li { margin-bottom: 9px; }
.footer-column a { font-size: 13px; color: rgba(255,255,255,0.6); transition: color 0.2s; }
.footer-column a:hover { color: var(--white); }
.copyright { display: block; text-align: center; padding: 20px 32px; font-size: 13px; color: rgba(255,255,255,0.4); border-top: 1px solid rgba(255,255,255,0.1); }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .problem-grid { grid-template-columns: repeat(2, 1fr); }
    .feature-grid { grid-template-columns: repeat(2, 1fr); }
    .usecase-grid { grid-template-columns: repeat(2, 1fr); }
    .merit-grid { grid-template-columns: repeat(2, 1fr); }
    .benefit-cards { grid-template-columns: repeat(2, 1fr); }
    .security-grid { grid-template-columns: repeat(2, 1fr); }
    .hero-inner { grid-template-columns: 1fr; gap: 48px; padding: 64px 32px; }
    .hero-text h1 { font-size: 32px; }
    .footer-columns { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
    .hero-diagram-img { display: none; }
    .hero-inner { padding: 56px 20px; }
    .hero-text h1 { font-size: 26px; }
    .section-inner { padding: 64px 20px; }
    .section-header h2 { font-size: 24px; }
    .problem-grid { grid-template-columns: 1fr; }
    .feature-grid { grid-template-columns: repeat(2, 1fr); }
    .benefit-cards { grid-template-columns: 1fr; }
    .usecase-grid { grid-template-columns: 1fr; }
    .steps-container { flex-direction: column; }
    .step-arrow { transform: rotate(90deg); padding-top: 0; align-self: center; }
    .comparison-table th, .comparison-table td { font-size: 12px; padding: 10px 12px; }
    .security-grid { grid-template-columns: 1fr; }
    .merit-grid { grid-template-columns: 1fr 1fr; }
    .footer-columns { grid-template-columns: 1fr 1fr; gap: 24px; }
    .hero-cta { flex-direction: column; align-items: flex-start; }
    .pricing-cta { flex-direction: column; align-items: center; }
    .final-cta-buttons { flex-direction: column; align-items: center; }
    .final-cta-section h2 { font-size: 24px; }
    .lp-nav-links a:not(.btn-nav) { display: none; }
    .problem-summary { padding: 24px 20px; }
}
@media (max-width: 480px) {
    .hero-text h1 { font-size: 23px; }
    .section-header h2 { font-size: 22px; }
    .feature-grid { grid-template-columns: 1fr; }
    .merit-grid { grid-template-columns: 1fr; }
    .footer-columns { grid-template-columns: 1fr; }
    .btn-large { padding: 16px 32px !important; font-size: 15px !important; }
    .comparison-table th.col-cloud, .comparison-table td.col-cloud { display: none; }
}