:root {
  --ink: #111716;
  --muted: #56605e;
  --paper: #ffffff;
  --soft: #eefafd;
  --teal: #00AFCC;
  --teal-dark: #007f96;
  --line: #d8e9ec;
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Noto Sans JP", sans-serif;
  font-size: 16px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
.skip { position: fixed; left: 12px; top: -80px; z-index: 99; padding: 10px 16px; background: #fff; border: 2px solid var(--ink); }
.skip:focus { top: 12px; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 max(24px, calc((100vw - var(--max)) / 2));
  background: rgba(255,255,255,.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(12px);
}
.brand { display: inline-flex; align-items: center; text-decoration: none; }
.brand-thumbnail { position: relative; width: 220px; height: 58px; overflow: hidden; background: #fff; }
.brand-thumbnail img { position: absolute; left: 50%; top: 50%; width: 252px; max-width: none; height: auto; transform: translate(-50%, -50%); }
nav { display: flex; align-items: center; gap: 30px; }
nav a { text-decoration: none; font-size: .875rem; font-weight: 600; }
.nav-cta { padding: 10px 17px; color: #fff; background: var(--ink); border-radius: 4px; }

.hero {
  min-height: 760px;
  display: grid;
  grid-template-columns: 1.02fr .98fr;
  align-items: stretch;
  max-width: 1440px;
  margin: 0 auto;
  border-inline: 1px solid var(--line);
}
.hero-copy { padding: 92px clamp(32px, 6vw, 96px) 64px; }
.eyebrow { display: flex; align-items: center; gap: 10px; margin: 0 0 24px; color: var(--teal-dark); font: 700 .8rem/1 "DM Sans", sans-serif; letter-spacing: .13em; }
.eyebrow span { width: 28px; height: 2px; background: currentColor; }
h1, h2, h3, p { margin-top: 0; }
.heading-line { display: block; width: max-content; max-width: 100%; }
.mobile-line { display: inline; }
h1 { margin-bottom: 30px; font-size: clamp(2.65rem, 5vw, 4.75rem); line-height: 1.18; letter-spacing: -.045em; font-weight: 700; }
h1 em { color: var(--teal); font-style: normal; }
.lead { max-width: 640px; margin-bottom: 36px; color: var(--muted); font-size: 1.05rem; line-height: 2; }
.hero-actions { display: flex; align-items: center; gap: 28px; flex-wrap: wrap; }
.button { min-height: 54px; display: inline-flex; align-items: center; justify-content: center; padding: 13px 22px; border: 0; border-radius: 4px; text-decoration: none; font: 700 .95rem/1.4 "Noto Sans JP", sans-serif; cursor: pointer; transition: transform .2s, background .2s; }
.button:hover { transform: translateY(-2px); }
.button.primary { color: var(--ink); background: var(--teal); }
.button.primary:hover { background: var(--teal-dark); }
.text-link { text-underline-offset: 5px; font-weight: 600; font-size: .9rem; }
.quick-facts { display: grid; grid-template-columns: repeat(3,1fr); gap: 0; max-width: 590px; margin: 70px 0 0; padding: 22px 0 0; border-top: 1px solid var(--line); list-style: none; }
.quick-facts li { display: flex; flex-direction: column; gap: 2px; padding-left: 20px; border-left: 1px solid var(--line); }
.quick-facts li:first-child { padding-left: 0; border-left: 0; }
.quick-facts strong { font-size: 1.05rem; }
.quick-facts span { color: var(--muted); font-size: .78rem; }

.hero-visual { position: relative; display: flex; flex-direction: column; justify-content: center; min-height: 620px; padding: 64px 7%; overflow: hidden; color: #fff; background: var(--ink); }
.hero-visual::before { content: ""; position: absolute; inset: 0; background-image: linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px); background-size: 46px 46px; }
.visual-label { position: absolute; top: 30px; right: 32px; color: var(--teal); font: 600 .73rem/1 "DM Sans"; letter-spacing: .16em; }
.cycle { position: relative; width: min(100%, 490px); aspect-ratio: 1; margin: auto; }
.cycle::before, .cycle::after { content: ""; position: absolute; border-radius: 50%; }
.cycle::before { inset: 17%; border: 1px solid rgba(0,175,204,.48); }
.cycle::after { inset: 28%; border: 1px dashed rgba(255,255,255,.22); }
.cycle-center { position: absolute; inset: 34%; z-index: 2; display: grid; place-content: center; text-align: center; color: var(--ink); border-radius: 50%; background: var(--teal); box-shadow: 0 0 0 12px rgba(0,175,204,.12); }
.cycle-center span { font-size: .72rem; opacity: .78; }
.cycle-center strong { font-size: clamp(.85rem, 1.6vw, 1.05rem); line-height: 1.55; }
.cycle-item { position: absolute; z-index: 3; width: 96px; min-height: 74px; padding: 10px 12px; background: #fff; color: var(--ink); border-left: 3px solid var(--teal); box-shadow: 0 12px 26px rgba(0,0,0,.23); }
.cycle-item b { display: block; margin-bottom: 4px; color: var(--teal); font: 700 .7rem/1 "DM Sans"; }
.cycle-item span { display: block; font-size: .78rem; font-weight: 600; line-height: 1.45; }
.item-1 { top: 3%; left: 36%; }.item-2 { top: 23%; right: 0; }.item-3 { bottom: 18%; right: 3%; }.item-4 { bottom: 0; left: 35%; }.item-5 { bottom: 18%; left: 1%; }.item-6 { top: 23%; left: 0; }
.hero-visual > p { position: relative; margin: 28px 0 0; text-align: center; color: #aeb9b7; font-size: .88rem; }

.section, .band, .band-light { padding: 110px max(24px, calc((100vw - var(--max)) / 2)); }
.band { color: #fff; background: var(--ink); }
.band-light { background: var(--soft); }
.problem { display: grid; grid-template-columns: .22fr .9fr 1fr; gap: 60px; align-items: start; }
.section-tag { color: var(--teal); font: 700 .74rem/1 "DM Sans"; letter-spacing: .15em; writing-mode: vertical-rl; }
h2 { font-size: clamp(2rem, 3.6vw, 3.25rem); line-height: 1.35; letter-spacing: -.035em; }
.problem-copy p { max-width: 520px; color: #aeb9b7; }
.problem-list { margin: 0; padding: 0; list-style: none; border-top: 1px solid #3b4341; }
.problem-list li { display: grid; grid-template-columns: 44px 1fr; gap: 14px; padding: 17px 4px; border-bottom: 1px solid #3b4341; font-weight: 500; }
.problem-list span { color: var(--teal); font: 600 .78rem/1.8 "DM Sans"; }

.method { display: grid; grid-template-columns: .8fr 1.2fr; gap: 90px; }
.section-heading { max-width: 560px; }
.section-heading > p:not(.eyebrow) { color: var(--muted); }
.steps { margin: 0; padding: 0; list-style: none; counter-reset: item; }
.steps li { display: grid; grid-template-columns: 60px 1fr; gap: 26px; padding: 0 0 28px; position: relative; }
.steps li:not(:last-child)::before { content: ""; position: absolute; left: 25px; top: 50px; bottom: 0; width: 1px; background: var(--line); }
.steps b { position: relative; z-index: 2; display: grid; place-items: center; align-self: start; width: 52px; height: 52px; color: #fff; background: var(--teal); border-radius: 50%; font: 700 .8rem/1 "DM Sans"; }
.steps h3 { margin-bottom: 6px; font-size: 1.1rem; }
.steps p { margin-bottom: 0; color: var(--muted); font-size: .93rem; }

.examples { display: grid; grid-template-columns: .15fr .75fr 1.2fr; gap: 52px; align-items: start; }
.examples .section-tag { color: var(--teal-dark); }
.compact h2 { font-size: clamp(1.9rem, 3vw, 2.6rem); }
.topic-grid { display: grid; grid-template-columns: repeat(2,1fr); border: solid var(--line); border-width: 1px 0 0 1px; }
.topic-grid div { min-height: 108px; display: flex; flex-direction: column; justify-content: center; padding: 20px 26px; background: #fff; border: solid var(--line); border-width: 0 1px 1px 0; font-weight: 600; }
.topic-grid span { color: var(--teal-dark); font: 600 .72rem/1.5 "DM Sans"; letter-spacing: .06em; }

.fit .section-heading { margin-bottom: 46px; }
.fit-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 24px; }
.fit-card { padding: clamp(28px, 4vw, 48px); border: 1px solid var(--line); }
.fit-card.good { color: var(--ink); background: var(--teal); border-color: var(--teal); }
.fit-card.other { background: #f7f9f9; }
.card-kicker { margin-bottom: 30px; color: #075c6a; font: 700 .75rem/1 "DM Sans"; letter-spacing: .15em; }
.other .card-kicker { color: var(--muted); }
.fit-card h3 { margin-bottom: 24px; font-size: 1.45rem; }
.fit-card ul { margin: 0; padding: 0; list-style: none; }
.fit-card li { position: relative; padding: 13px 0 13px 30px; border-top: 1px solid rgba(5,61,71,.25); }
.fit-card li::before { content: "✓"; position: absolute; left: 2px; color: #064e5b; font-weight: 700; }
.other li { border-color: var(--line); }
.other li::before { content: "—"; color: var(--muted); }
.fit-note { max-width: 840px; margin: 28px 0 0; color: var(--muted); font-size: .9rem; }

.plan { display: grid; grid-template-columns: .16fr 1fr 1.1fr; gap: 60px; }
.inverse { color: var(--teal); }
.plan-main > p:last-child { color: #aeb9b7; font-size: .9rem; }
.price { display: flex; align-items: baseline; gap: 10px; margin: 34px 0 4px; }
.price strong { color: var(--teal); font: 700 clamp(3rem, 5vw, 4.7rem)/1 "DM Sans"; letter-spacing: -.04em; }
.price span { font-size: .85rem; }
.plan-details { border-top: 1px solid #3b4341; }
.plan-details > div { padding: 24px 0; border-bottom: 1px solid #3b4341; }
.plan-details span { display: block; color: var(--teal); font-size: .8rem; }
.plan-details strong { display: block; margin: 6px 0; font-size: 1.15rem; }
.plan-details p { margin: 0; color: #aeb9b7; font-size: .86rem; }
.fine-print { grid-column: 2 / -1; margin: 0; padding-top: 28px; border-top: 1px solid #3b4341; color: #8e9a98; font-size: .78rem; }

.flow { display: grid; grid-template-columns: .8fr 1.2fr; gap: 90px; }
.start-flow { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--ink); }
.start-flow li { display: grid; grid-template-columns: 54px 1fr; gap: 24px; padding: 25px 0; border-bottom: 1px solid var(--line); }
.start-flow b { color: var(--teal); font: 700 .8rem/2 "DM Sans"; }
.start-flow h3 { margin-bottom: 3px; font-size: 1.1rem; }
.start-flow p { margin: 0; color: var(--muted); font-size: .9rem; }

.faq { display: grid; grid-template-columns: .72fr 1.28fr; gap: 100px; padding-top: 28px; }
.faq-list { border-top: 1px solid var(--ink); }
details { border-bottom: 1px solid var(--line); }
summary { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 23px 0; font-weight: 600; cursor: pointer; list-style: none; }
summary::-webkit-details-marker { display: none; }
summary span { color: var(--teal); font-size: 1.5rem; font-weight: 400; transition: transform .2s; }
details[open] summary span { transform: rotate(45deg); }
details p { margin: -4px 40px 24px 0; color: var(--muted); font-size: .92rem; }

.consultation { display: grid; grid-template-columns: 1.15fr .85fr; gap: 80px; align-items: center; padding: 96px max(24px, calc((100vw - var(--max)) / 2)); color: var(--ink); background: var(--teal); }
.consultation .inverse { color: #064e5b; }
.consultation > div:first-child > p:last-child { max-width: 650px; color: #074e59; }
.consult-card { padding: 34px; color: var(--ink); background: #fff; border-radius: 4px; }
.consult-card > span { display: block; color: var(--teal-dark); font-weight: 700; }
.consult-card > strong { display: block; margin: 5px 0 12px; font-size: 2rem; }
.consult-card p { color: var(--muted); font-size: .9rem; }
.button.light { width: 100%; margin-top: 12px; color: #7b8482; background: #e6eceb; cursor: not-allowed; }
.button.light:hover { transform: none; }
.consult-card small { display: block; margin-top: 12px; color: #7b8482; text-align: center; }

footer { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 20px; padding: 42px max(24px, calc((100vw - var(--max)) / 2)); color: #fff; background: #0b1110; }
footer p { margin: 0; color: #aeb9b7; font-size: .82rem; }
.copyright { justify-self: end; }

@media (max-width: 900px) {
  nav > a:not(.nav-cta) { display: none; }
  .hero { grid-template-columns: 1fr; }
  .hero-copy { padding-top: 70px; }
  .hero-visual { min-height: 620px; }
  .problem, .examples, .plan { grid-template-columns: 1fr; gap: 34px; }
  .section-tag { writing-mode: horizontal-tb; }
  .method, .flow, .faq { grid-template-columns: 1fr; gap: 54px; }
  .fine-print { grid-column: auto; }
  .consultation { grid-template-columns: 1fr; gap: 32px; }
  footer { grid-template-columns: 1fr; }
  footer p, .copyright { justify-self: start; }
}

@media (max-width: 600px) {
  .site-header { height: 68px; padding-inline: 18px; }
  .brand-thumbnail { width: 154px; height: 46px; }
  .brand-thumbnail img { width: 168px; }
  .nav-cta { padding: 9px 12px; font-size: .77rem; }
  .hero-copy { padding: 58px 22px 48px; }
  h1 { font-size: clamp(1.95rem, 8.3vw, 2.8rem); }
  .lead { font-size: .98rem; line-height: 1.85; }
  .hero-actions { align-items: flex-start; flex-direction: column; }
  .button.primary { width: 100%; }
  .quick-facts { margin-top: 48px; }
  .quick-facts strong { font-size: .92rem; }
  .quick-facts span { font-size: .7rem; }
  .hero-visual { min-height: 500px; padding: 58px 10px 34px; }
  .cycle { width: 100%; max-width: 390px; }
  .cycle-item { width: 78px; min-height: 63px; padding: 8px 9px; }
  .cycle-item span { font-size: .69rem; }
  .cycle-center { inset: 33%; }
  .cycle-center span { font-size: .59rem; }
  .cycle-center strong { font-size: .76rem; }
  .section, .band, .band-light { padding: 78px 22px; }
  h2 { font-size: 1.7rem; }
  .heading-line { width: auto; }
  .mobile-line { display: block; }
  .problem-list li { font-size: .9rem; }
  .method, .flow, .faq { gap: 40px; }
  .steps li { grid-template-columns: 48px 1fr; gap: 16px; }
  .steps b { width: 44px; height: 44px; }
  .steps li:not(:last-child)::before { left: 21px; top: 44px; }
  .topic-grid { grid-template-columns: 1fr; }
  .fit-grid { grid-template-columns: 1fr; }
  .fit-card { padding: 28px 22px; }
  .price { flex-wrap: wrap; }
  .price strong { font-size: 3.3rem; }
  .consultation { padding: 76px 22px; }
  .consult-card { padding: 26px 20px; }
  footer { padding: 38px 22px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; }
}