:root {
  --navy: #081a33;
  --blue: #2459d3;
  --cyan: #19bbd3;
  --ice: #eef7fc;
  --cloud: #f7f9fc;
  --gold: #d6b76a;
  --orange: #f28a18;
  --ochre: #f2c94c;
  --ink: #172235;
  --text: #334155;
  --muted: #64748b;
  --line: #dbe8f2;
  --white: #fff;
  --shadow: 0 22px 60px rgba(36, 89, 211, .12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--text); background: var(--white); font-family: "Noto Sans JP", sans-serif; line-height: 1.7; }
a { color: inherit; }
p, h1, h2 { margin-top: 0; }
.site-header { height: 72px; padding: 0 clamp(20px,5vw,72px); display: flex; align-items: center; justify-content: space-between; color: var(--navy); background: rgba(255,255,255,.92); border-bottom: 1px solid var(--line); }
.site-header a { display: flex; align-items: center; text-decoration: none; }
.site-header img { display: block; width: 164px; height: auto; }
.site-header span { color: var(--blue); font: 700 12px Inter,sans-serif; letter-spacing: .12em; }
.hero { position: relative; overflow: hidden; padding: 72px 20px 80px; text-align: center; background: radial-gradient(circle at 50% 55%,rgba(25,187,211,.13),transparent 29%),linear-gradient(180deg,#fff,#eef7fc); }
.hero::before { content: ""; position: absolute; inset: 0; opacity: .55; background-image: linear-gradient(rgba(36,89,211,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(36,89,211,.05) 1px,transparent 1px); background-size: 64px 64px; mask-image: linear-gradient(to bottom,#000,transparent 78%); }
.hero::after { content: ""; position: absolute; inset: 0; background: url("lp-gallery-background.png") center/cover no-repeat; opacity: .54; pointer-events: none; }
.hero-inner { position: relative; z-index: 1; width: min(100%,1000px); margin: auto; }
.hero-brand, .section-label { display: inline-flex; padding: 7px 13px; color: var(--blue); background: rgba(255,255,255,.82); border: 1px solid rgba(36,89,211,.17); border-radius: 999px; font: 800 11px Inter,sans-serif; letter-spacing: .14em; }
.hero h1 { max-width: 900px; margin: 22px auto 20px; color: var(--navy); font-size: clamp(22px,4vw,48px); line-height: 1.35; letter-spacing: -.045em; }
.hero-accent { color: var(--blue); background: linear-gradient(105deg,var(--blue),var(--cyan)); background-clip: text; -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.hero-description { color: #475569; font-size: 16px; }
.hero-description p { margin-bottom: 4px; }
.hero-mockup { width: min(55%,560px); margin: 34px auto 28px; }
.hero-mockup img { display: block; width: 100%; height: auto; }
.primary-button { display: inline-flex; min-height: 58px; padding: 0 30px; align-items: center; justify-content: center; color: #172235; background: linear-gradient(105deg,var(--orange),#ffad24 48%,var(--ochre)); border-radius: 999px; box-shadow: 0 18px 38px rgba(242,138,24,.26); font-weight: 900; text-decoration: none; }
.hero-note { margin: 13px 0 0; color: var(--muted); font-size: 12px; }
.lp-section { padding: 92px 20px; }
.section-white { background: var(--white); }
.section-ice { background: var(--ice); }
.section-cloud { background: var(--cloud); }
.section-proof { color: #fff; background: linear-gradient(145deg,var(--navy),#123e75); }
.section-pricing { background: linear-gradient(180deg,#fff,#eef7fc); }
.section-compare { background: var(--cloud); }
.section-final { position: relative; overflow: hidden; color: #fff; background: linear-gradient(145deg,#081a33,#174f85); }
.section-final::before { content: ""; position: absolute; inset: 0; background: linear-gradient(rgba(8,26,51,.76),rgba(8,26,51,.9)),url("lp-gallery-background.png") center/cover no-repeat; opacity: .46; pointer-events: none; }
.section-inner { position: relative; z-index: 1; width: min(100%,1040px); margin: auto; }
.section-label { display: flex; width: fit-content; margin: 0 auto 18px; }
.lp-section h2 { max-width: 670px; margin: 0 auto 34px; color: var(--navy); font-size: clamp(21px,3vw,36px); line-height: 1.45; letter-spacing: -.035em; text-align: center; }
.heading-accent { color: var(--blue); background: linear-gradient(105deg,var(--blue),var(--cyan)); background-clip: text; -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.section-proof h2, .section-final h2 { color: #fff; }
.section-proof .heading-accent, .section-final .heading-accent { color: var(--ochre); background: linear-gradient(105deg,#f0a62c,var(--ochre),#ffe59b); background-clip: text; -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.copy-body { width: min(100%,750px); margin-inline: auto; font-size: 16px; }
.copy-body p { margin-bottom: 17px; }
.formula-visual { width: 100%; margin: 30px auto; padding: 26px; display: grid; grid-template-columns: 1fr auto 1fr auto 1.15fr; gap: 15px; align-items: center; background: linear-gradient(135deg,#fff,#eef7fc); border: 1px solid rgba(36,89,211,.2); border-radius: 20px; box-shadow: var(--shadow); }
.formula-block { min-height: 150px; padding: 20px 14px; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; color: var(--navy); background: rgba(255,255,255,.92); border: 1px solid var(--line); border-radius: 14px; }
.formula-block small { margin-bottom: 7px; color: var(--cyan); font: 800 10px Inter,sans-serif; letter-spacing: .14em; }
.formula-block strong { font-size: 26px; line-height: 1.35; }
.formula-block span { margin-top: 7px; font-size: 12px; font-weight: 700; }
.formula-result { color: #fff; background: linear-gradient(135deg,var(--blue),var(--cyan)); border: 0; }
.formula-result small { color: rgba(255,255,255,.72); }
.formula-result strong { font-size: 20px; }
.formula-symbol { color: var(--blue); font-size: 28px; }
.copy-body .proof-stat { padding: 16px 18px; color: var(--navy); background: rgba(255,255,255,.94); border: 1px solid rgba(214,183,106,.42); border-left: 4px solid var(--cyan); border-radius: 0 12px 12px 0; box-shadow: 0 12px 30px rgba(0,0,0,.1); font-weight: 800; }
.section-proof .copy-body p { color: rgba(255,255,255,.82); }
.section-proof .copy-body .proof-stat { color: var(--navy); }
.section-visual { width: min(100%,750px); margin: 0 auto 36px; overflow: hidden; background: rgba(255,255,255,.8); border: 1px solid rgba(36,89,211,.15); border-radius: 20px; box-shadow: var(--shadow); }
.section-visual img { display: block; width: 100%; height: auto; }
.section-proof .section-visual { border-color: rgba(214,183,106,.45); box-shadow: 0 24px 60px rgba(0,0,0,.25); }
.pricing-grid { display: grid; gap: 18px; align-items: stretch; }
.pricing-grid { grid-template-columns: repeat(3,1fr); }
.plan-card { position: relative; overflow: hidden; padding: 30px 24px; background: rgba(255,255,255,.94); border: 1px solid var(--line); border-radius: 20px; box-shadow: 0 18px 45px rgba(8,26,51,.08); }
.plan-card::before { content: ""; position: absolute; inset: 0 0 auto; height: 5px; background: var(--cyan); }
.plan-card.standard::before { background: var(--blue); }
.plan-card.premium::before { background: linear-gradient(90deg,var(--navy),var(--gold)); }
.plan-card h3 { margin: 0 0 22px; text-align: center; }
.plan-name { display: block; color: var(--navy); font: 800 18px/1.4 Inter,"Noto Sans JP",sans-serif; letter-spacing: .08em; }
.plan-price { display: block; margin-top: 6px; color: var(--orange); background: linear-gradient(105deg,#ef7214,var(--orange),var(--ochre)); background-clip: text; -webkit-background-clip: text; -webkit-text-fill-color: transparent; font-size: 34px; font-weight: 900; line-height: 1.2; }
.plan-card p { margin: 0 0 12px; font-size: 14px; }
.plan-card p:first-of-type { min-height: 52px; color: var(--blue); font-weight: 800; }
.plan-check { position: relative; padding-left: 24px; line-height: 1.4; }
.plan-check::before { content: "✓"; position: absolute; left: 0; top: 0; color: var(--blue); font-weight: 900; }
.subscription-table { margin: 28px 0 32px; display: grid; grid-template-columns: repeat(3,1fr); gap: 16px; }
.subscription-table article { padding: 24px 20px; background: #fff; border: 1px solid var(--line); border-radius: 16px; box-shadow: 0 14px 35px rgba(8,26,51,.07); }
.feature-check { width: 30px; height: 30px; margin-bottom: 15px; display: grid; place-items: center; color: #fff; background: linear-gradient(135deg,var(--blue),var(--cyan)); border-radius: 50%; font-weight: 900; }
.subscription-table h3 { margin: 0 0 10px; color: var(--navy); font-size: 17px; }
.subscription-table figure { margin: 0 0 16px; overflow: hidden; aspect-ratio: 4/3; background: var(--ice); border: 1px solid var(--line); border-radius: 10px; }
.subscription-table img { display: block; width: 100%; height: 100%; object-fit: cover; }
.subscription-table p { margin: 0; font-size: 13px; line-height: 1.65; }
.subscription-notes { margin-top: 0; }
.comparison-table-wrap { width: 100%; overflow-x: auto; border: 1px solid var(--line); border-radius: 18px; box-shadow: 0 16px 40px rgba(8,26,51,.08); }
.comparison-table { width: 100%; min-width: 850px; border-collapse: collapse; background: #fff; font-size: 13px; }
.comparison-table th, .comparison-table td { padding: 15px 13px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); text-align: center; }
.comparison-table thead th { color: #fff; background: var(--navy); font-weight: 800; }
.comparison-table tbody th { color: var(--navy); background: var(--ice); text-align: left; white-space: nowrap; }
.comparison-table .featured { color: var(--navy); background: #e5f6fb; font-weight: 900; }
.comparison-table thead .featured { color: #fff; background: linear-gradient(135deg,var(--blue),var(--cyan)); }
.comparison-notes { max-width: 820px; margin: 38px auto 0; }
.faq-list { max-width: 850px; margin: auto; }
.faq-list details { margin-bottom: 12px; padding: 0 22px; background: #fff; border: 1px solid var(--line); border-radius: 14px; }
.faq-list summary { position: relative; padding: 20px 42px 20px 0; color: var(--navy); font-weight: 800; cursor: pointer; list-style: none; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: "＞"; position: absolute; right: 0; top: 50%; color: var(--blue); font-size: 18px; transform: translateY(-50%); transition: transform .2s ease; }
.faq-list details[open] summary::after { transform: translateY(-50%) rotate(90deg); }
.faq-list p { margin: 0; padding: 0 0 22px; color: var(--text); }
.contact-form { max-width: 760px; margin: 44px auto 0; padding: 30px; color: var(--navy); background: rgba(255,255,255,.96); border: 1px solid rgba(214,183,106,.45); border-radius: 20px; box-shadow: 0 26px 70px rgba(0,0,0,.2); }
.contact-form label { display: grid; gap: 8px; margin-bottom: 17px; font-size: 13px; font-weight: 800; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.contact-form input, .contact-form textarea { width: 100%; padding: 14px 15px; color: var(--ink); background: #fff; border: 1px solid #cbdcea; border-radius: 10px; font: inherit; }
.contact-form input:focus, .contact-form textarea:focus { outline: 3px solid rgba(25,187,211,.2); border-color: var(--cyan); }
.contact-form .primary-button { width: 100%; border: 0; cursor: pointer; }
.google-form-status { min-height: 24px; margin: 12px 0 0; color: var(--blue); font-size: 13px; font-weight: 800; text-align: center; }
.form-target { position: fixed; width: 1px; height: 1px; opacity: 0; pointer-events: none; }
footer { padding: 40px 24px; display: flex; justify-content: center; align-items: center; gap: 22px; color: var(--muted); background: #fff; border-top: 1px solid var(--line); font-size: 12px; }
footer strong { color: var(--navy); font: 800 16px Inter,sans-serif; }
footer a { color: var(--blue); font-weight: 800; }

@media (max-width: 640px) {
  .hero { padding: 54px 16px 64px; }
  .hero h1 { font-size: 22px; }
  .hero-description { font-size: 14px; }
  .hero-mockup { width: min(88%,360px); }
  .hero::after, .section-final::before { background-position: center top; }
  .lp-section { padding: 70px 16px; }
  .lp-section h2 { font-size: 20px; }
  .copy-body { font-size: 15px; }
  .pricing-grid { grid-template-columns: 1fr; }
  .formula-visual { padding: 18px; grid-template-columns: 1fr; }
  .formula-symbol { line-height: 1; transform: rotate(90deg); }
  .formula-block { min-height: 120px; }
  .subscription-table { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; gap: 0; }
  .contact-form { padding: 20px; }
  .plan-card p:first-of-type { min-height: 0; }
  footer { flex-direction: column; gap: 10px; }
}

@media (min-width: 641px) and (max-width: 900px) {
  .pricing-grid { grid-template-columns: 1fr; }
}