:root {
  --ink: #123444;
  --muted: #5c7480;
  --teal: #238385;
  --teal-2: #58b6b4;
  --mint: #e8f7f3;
  --mint-2: #d7f0ec;
  --coral: #ff746f;
  --coral-2: #ff9187;
  --pink: #fff0ef;
  --peach: #fff5e8;
  --cream: #fffdf7;
  --line: #d9eeea;
  --shadow: 0 18px 40px rgba(28, 76, 81, .10);
  --radius: 24px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Sans", "Noto Sans JP", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 10% 5%, rgba(255, 145, 135, .13), transparent 24rem),
    radial-gradient(circle at 92% 15%, rgba(88, 182, 180, .12), transparent 24rem),
    var(--cream);
  line-height: 1.8;
}

a { color: inherit; text-decoration: none; }
.container { width: min(1120px, calc(100% - 40px)); margin: 0 auto; }
.narrow { width: min(900px, calc(100% - 40px)); }
.section { padding: 78px 0; position: relative; }
.section-title {
  text-align: center;
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.3;
  margin: 0 0 34px;
  letter-spacing: .04em;
  color: var(--teal);
}
.section-title::before,
.section-title::after { content: "✦"; color: #f5b457; font-size: .65em; margin: 0 .5em; }
.section-copy { max-width: 760px; margin: -14px auto 36px; text-align: center; color: var(--muted); }

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(14px);
  background: rgba(255, 253, 247, .88);
  border-bottom: 2px dashed rgba(35, 131, 133, .25);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; min-height: 86px; }
.brand { display: flex; align-items: center; gap: 14px; }
.brand strong { display: block; font-size: 26px; line-height: 1.1; letter-spacing: .04em; }
.brand small { color: var(--muted); font-size: 12px; }
.brand-mark {
  position: relative;
  width: 54px;
  height: 54px;
  border-radius: 18px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, #fef5ee, #ddf4ef);
  border: 1px solid rgba(35, 131, 133, .2);
  box-shadow: var(--shadow);
}
.brand-mark .paper { color: var(--teal); font-size: 24px; }
.brand-mark .thread { position: absolute; right: -7px; bottom: -6px; color: var(--coral); font-size: 26px; transform: rotate(-15deg); }
.nav { display: flex; align-items: center; gap: 22px; font-weight: 700; }
.nav a { color: var(--ink); }
.nav-cta { padding: 12px 20px; background: var(--coral); color: white !important; border-radius: 999px; box-shadow: 0 10px 22px rgba(255,116,111,.25); }

.hero { padding-top: 70px; }
.hero-grid { display: grid; grid-template-columns: 1fr .95fr; gap: 54px; align-items: center; }
.eyebrow { color: var(--teal); font-weight: 800; letter-spacing: .08em; }
h1 { font-size: clamp(44px, 6.5vw, 82px); line-height: 1.08; margin: 8px 0 22px; letter-spacing: .03em; }
h1 span { color: var(--coral); }
.lead { font-size: clamp(20px, 2.4vw, 29px); font-weight: 800; line-height: 1.7; margin: 0 0 18px; }
.hero-text { font-size: 17px; color: var(--muted); max-width: 620px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 16px; margin: 30px 0 24px; }
.hero-actions.center { justify-content: center; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 13px 24px;
  border-radius: 999px;
  font-weight: 800;
  transition: transform .18s ease, box-shadow .18s ease;
}
.button:hover { transform: translateY(-2px); }
.button.primary { color: white; background: linear-gradient(135deg, var(--coral), #ff8b78); box-shadow: 0 14px 26px rgba(255,116,111,.28); }
.button.secondary { color: var(--teal); background: white; border: 1.5px solid var(--teal-2); }
.badge-list { display: flex; flex-wrap: wrap; gap: 10px; padding: 0; margin: 0; list-style: none; }
.badge-list li { padding: 9px 14px; background: rgba(232,247,243,.9); border: 1px solid var(--line); border-radius: 999px; font-size: 13px; font-weight: 700; color: var(--teal); }

.dashboard-card {
  position: relative;
  background: rgba(255,255,255,.86);
  border: 2px solid rgba(35,131,133,.24);
  border-radius: 30px;
  padding: 28px;
  box-shadow: var(--shadow);
  overflow: hidden;
}
.dashboard-card::after { content: ""; position: absolute; inset: 13px; border: 1.5px dashed rgba(35,131,133,.18); border-radius: 24px; pointer-events: none; }
.dashboard-head { display: flex; align-items: center; gap: 10px; margin-bottom: 22px; font-size: 18px; }
.sheet-icon { background: #1aa35e; color: white; border-radius: 10px; width: 36px; height: 36px; display: grid; place-items: center; font-weight: 800; }
.dashboard-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 15px; }
.mini-card { min-height: 130px; padding: 18px; border-radius: 18px; border: 1px solid rgba(18,52,68,.08); display: grid; gap: 4px; }
.mini-card span { font-size: 28px; }
.mini-card strong { color: var(--teal); }
.mini-card small { color: var(--muted); line-height: 1.5; }
.mini-card.pink { background: var(--pink); }
.mini-card.peach { background: var(--peach); }
.mini-card.mint { background: var(--mint); }
.mini-card.blue { background: #eef9fb; }
.chart { margin-top: 24px; padding: 14px; background: white; border-radius: 18px; border: 1px solid var(--line); }
.spool { width: 46px; height: 44px; border-radius: 10px; background: linear-gradient(#f3a459, #e9875a); position: absolute; right: 30px; top: -16px; transform: rotate(9deg); box-shadow: 0 10px 20px rgba(151,91,50,.18); }
.spool::before, .spool::after { content: ""; position: absolute; left: -8px; right: -8px; height: 10px; border-radius: 999px; background: #ffd494; }
.spool::before { top: -4px; } .spool::after { bottom: -4px; }
.needle { position: absolute; right: 22px; bottom: 15px; width: 7px; height: 150px; background: #4c8990; border-radius: 999px; transform: rotate(22deg); }

.problem-section, .pricing-section { background: rgba(255,255,255,.48); border-top: 1px solid rgba(35,131,133,.08); border-bottom: 1px solid rgba(35,131,133,.08); }
.problem-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 14px; }
.problem-card { min-height: 162px; padding: 18px 12px; background: rgba(255,255,255,.78); border: 1px solid rgba(255,116,111,.28); border-radius: 18px; text-align: center; box-shadow: 0 8px 18px rgba(28,76,81,.05); }
.problem-card span { font-size: 34px; display: block; margin-bottom: 10px; }
.problem-card p { margin: 0; font-weight: 800; font-size: 14px; line-height: 1.6; }
.center-message { text-align: center; margin: 28px auto 0; font-size: 18px; font-weight: 700; }
.center-message strong { color: var(--coral); }

.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.feature-card { background: rgba(255,255,255,.82); border: 1.5px dashed rgba(35,131,133,.28); border-radius: var(--radius); padding: 30px; text-align: center; box-shadow: 0 12px 28px rgba(28,76,81,.06); }
.feature-icon { display: grid; place-items: center; width: 76px; height: 76px; margin: 0 auto 14px; border-radius: 50%; background: var(--mint); color: var(--teal); font-size: 28px; font-weight: 900; }
.feature-card h3 { margin: 0 0 8px; font-size: 22px; }
.feature-card p { margin: 0; color: var(--muted); font-weight: 600; }
.notice-box { margin: 28px auto 0; padding: 18px 24px; background: var(--peach); border: 1px solid #f3d9b0; border-radius: 16px; text-align: center; font-weight: 800; }
.notice-box small { display: block; color: var(--muted); font-weight: 600; }

.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; align-items: stretch; }
.price-card { position: relative; display: flex; flex-direction: column; gap: 18px; background: linear-gradient(180deg, #f4fcfb, #ffffff); border: 1px solid var(--line); border-radius: 24px; padding: 30px; box-shadow: 0 12px 28px rgba(28,76,81,.07); }
.price-card h3 { margin: 0; text-align: center; color: var(--teal); font-size: 23px; }
.price { text-align: center; margin: 0; font-size: 48px; font-weight: 900; color: var(--teal); letter-spacing: .02em; }
.price span { font-size: 22px; }
.price-card ul { padding: 20px 0 0; margin: 0; list-style: none; border-top: 2px dashed rgba(35,131,133,.2); display: grid; gap: 12px; }
.price-card li { font-weight: 700; color: var(--ink); padding-left: 28px; position: relative; }
.price-card li::before { content: "✓"; position: absolute; left: 0; color: var(--teal); font-weight: 900; }
.price-card .button { margin-top: auto; }
.price-card.recommended { border: 2.5px solid var(--coral); transform: translateY(-10px); background: linear-gradient(180deg, #fff8f5, #fff); }
.price-card.recommended .price, .price-card.recommended h3 { color: var(--coral); }
.ribbon { position: absolute; top: -18px; left: 50%; transform: translateX(-50%); padding: 8px 34px; background: var(--coral); color: white; border-radius: 999px; font-weight: 900; box-shadow: 0 10px 20px rgba(255,116,111,.25); }
.saving { margin: 0; padding: 10px; text-align: center; border-radius: 12px; border: 1px solid #ffd2c7; color: var(--coral); font-weight: 900; background: #fff7f3; }
.pricing-subgrid { display: grid; grid-template-columns: 1fr 1.3fr; gap: 18px; margin-top: 22px; }
.sub-card { background: white; border: 1px solid var(--line); border-radius: 20px; padding: 22px 26px; box-shadow: 0 10px 24px rgba(28,76,81,.05); }
.sub-card h3 { margin: 0 0 8px; font-size: 21px; }
.sub-card strong { color: var(--coral); font-size: 1.25em; }
.sub-card p { margin: 0; color: var(--muted); font-weight: 700; }
.sub-card.highlight { background: var(--peach); border-color: #efd2ad; }

.learning-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.learning-grid article { padding: 28px; border-radius: 22px; background: rgba(255,255,255,.85); border: 1px solid var(--line); text-align: center; box-shadow: 0 10px 24px rgba(28,76,81,.06); }
.learning-grid span { font-size: 36px; }
.learning-grid h3 { color: var(--teal); font-size: 22px; }
.learning-grid p { color: var(--muted); font-weight: 600; }

.faq-list { display: grid; gap: 12px; }
details { background: white; border: 1px solid rgba(255,116,111,.22); border-radius: 17px; padding: 18px 22px; box-shadow: 0 8px 18px rgba(28,76,81,.05); }
summary { cursor: pointer; list-style: none; font-weight: 900; font-size: 17px; position: relative; padding-left: 42px; }
summary::-webkit-details-marker { display: none; }
summary::before { content: "Q"; position: absolute; left: 0; top: -2px; display: grid; place-items: center; width: 30px; height: 30px; color: white; background: var(--coral); border-radius: 50%; }
details p { margin: 14px 0 0 42px; color: var(--muted); font-weight: 600; }

.final-cta { padding-top: 36px; }
.final-card { background: linear-gradient(135deg, #e7f7f3, #fff8ef); border: 1px solid var(--line); border-radius: 30px; padding: 48px; text-align: center; box-shadow: var(--shadow); }
.final-card h2 { margin: 0 0 14px; font-size: clamp(30px, 4vw, 46px); color: var(--teal); }
.final-card p { margin: 0 auto; max-width: 820px; font-weight: 700; color: var(--muted); }
.fineprint { margin-top: 26px !important; font-size: 12px; line-height: 1.7; color: #6d7b7d !important; }

.site-footer { padding: 34px 0; border-top: 2px dashed rgba(35,131,133,.22); color: var(--muted); }
.footer-inner { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; font-size: 13px; }
.footer-links { display: flex; gap: 14px; flex-wrap: wrap; }
.footer-links a { text-decoration: underline; text-underline-offset: 4px; }

@media (max-width: 920px) {
  .header-inner { flex-direction: column; padding: 16px 0; }
  .nav { flex-wrap: wrap; justify-content: center; gap: 14px; }
  .hero-grid { grid-template-columns: 1fr; }
  .dashboard-card { max-width: 680px; margin: 0 auto; }
  .problem-grid { grid-template-columns: repeat(3, 1fr); }
  .feature-grid, .pricing-grid, .learning-grid { grid-template-columns: 1fr; }
  .price-card.recommended { transform: none; }
  .pricing-subgrid { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
  .container, .narrow { width: min(100% - 24px, 1120px); }
  .section { padding: 58px 0; }
  .brand strong { font-size: 22px; }
  .hero { padding-top: 46px; }
  h1 { font-size: 44px; }
  .lead { font-size: 19px; }
  .hero-actions { flex-direction: column; }
  .button { width: 100%; }
  .dashboard-grid { grid-template-columns: 1fr; }
  .problem-grid { grid-template-columns: repeat(2, 1fr); }
  .problem-card { min-height: 140px; }
  .feature-card, .price-card, .final-card { padding: 24px; }
  .price { font-size: 40px; }
  .footer-inner { display: block; text-align: center; }
  .footer-links { justify-content: center; }
}