:root {
  --ink: #17211c;
  --muted: #5b675f;
  --paper: #f4f1e8;
  --card: #fffdf7;
  --line: #d6d4c8;
  --green: #164f3a;
  --green-2: #287356;
  --mint: #bfe9d6;
  --acid: #e6ff73;
  --orange: #ff8e5b;
  --shadow: 0 20px 55px rgba(23, 33, 28, 0.1);
  --radius: 26px;
  color-scheme: light;
  font-family: Inter, "Hiragino Sans", "Yu Gothic", YuGothic, system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  font-synthesis: none;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background:
    radial-gradient(circle at 85% 5%, rgba(230, 255, 115, 0.34), transparent 28rem),
    radial-gradient(circle at 10% 40%, rgba(191, 233, 214, 0.24), transparent 34rem),
    var(--paper);
  color: var(--ink);
  line-height: 1.75;
}
a { color: inherit; }
button, input { font: inherit; }
.skip-link { position: fixed; left: 1rem; top: -4rem; z-index: 100; background: white; padding: .75rem 1rem; }
.skip-link:focus { top: 1rem; }
.page-shell { width: min(1180px, calc(100% - 32px)); margin: 0 auto; }

.site-header {
  min-height: 92px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  border-bottom: 1px solid rgba(23, 33, 28, 0.18);
}
.brand { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; }
.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 50% 50% 46% 54% / 46% 48% 52% 54%;
  background: var(--green);
  color: var(--acid);
  font: 800 1.2rem/1 Georgia, serif;
  transform: rotate(-6deg);
}
.brand b { display: block; letter-spacing: .11em; font-size: 1.02rem; line-height: 1; }
.brand small { display: block; margin-top: 5px; color: var(--muted); font-size: .66rem; letter-spacing: .26em; }
.site-header nav { display: flex; align-items: center; gap: clamp(14px, 2.4vw, 32px); }
.site-header nav a { text-decoration: none; font-weight: 700; font-size: .86rem; }
.site-header nav a:hover { color: var(--green-2); }

main { padding: 52px 0 90px; }
.hero {
  min-height: 520px;
  display: grid;
  grid-template-columns: minmax(0, 1.42fr) minmax(280px, .58fr);
  align-items: center;
  gap: clamp(40px, 7vw, 90px);
  padding: clamp(38px, 7vw, 84px) 0;
}
.kicker { display: inline-block; color: var(--green-2); font-weight: 800; font-size: .76rem; letter-spacing: .16em; }
.hero h1 {
  max-width: 850px;
  margin: 18px 0 24px;
  font-family: "Yu Mincho", YuMincho, "Hiragino Mincho ProN", Georgia, serif;
  font-size: clamp(2.65rem, 6.8vw, 6.25rem);
  line-height: 1.08;
  letter-spacing: -.055em;
  font-weight: 700;
}
.article-page .hero { min-height: 410px; }
.article-page .hero h1 { font-size: clamp(2.5rem, 5.4vw, 5rem); }
.hero-copy > p { max-width: 720px; margin: 0; color: var(--muted); font-size: clamp(1rem, 1.55vw, 1.18rem); }
.hero-meta { display: flex; flex-wrap: wrap; gap: 12px 22px; margin-top: 28px; color: var(--muted); font-size: .75rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; }
.hero-orbit {
  position: relative;
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  border: 1px solid rgba(22, 79, 58, .35);
  border-radius: 50%;
  animation: drift 8s ease-in-out infinite;
}
.hero-orbit::before, .hero-orbit::after {
  content: "";
  position: absolute;
  inset: 13%;
  border: 1px dashed rgba(22, 79, 58, .3);
  border-radius: 50%;
  transform: rotate(18deg);
}
.hero-orbit::after { inset: 29%; border-style: solid; background: rgba(191, 233, 214, .28); }
.hero-orbit b { position: relative; z-index: 2; font: 800 clamp(2rem, 5vw, 4rem)/1 Georgia, serif; color: var(--green); }
.hero-orbit > span { position: absolute; z-index: 3; padding: 6px 10px; border-radius: 99px; background: var(--card); border: 1px solid var(--line); font-size: .62rem; font-weight: 800; letter-spacing: .1em; }
.hero-orbit > span:nth-child(1) { top: 5%; left: 42%; }
.hero-orbit > span:nth-child(2) { right: -2%; top: 57%; }
.hero-orbit > span:nth-child(3) { left: 3%; bottom: 14%; }
@keyframes drift { 0%, 100% { transform: translateY(0) rotate(0); } 50% { transform: translateY(-10px) rotate(2deg); } }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } .hero-orbit { animation: none; } }

.decision-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin: 20px 0 70px; }
.decision-card, .tool-card {
  background: rgba(255, 253, 247, .86);
  border: 1px solid rgba(23, 33, 28, .14);
  border-radius: var(--radius);
  box-shadow: 0 1px 0 rgba(255,255,255,.8) inset;
}
.decision-card { padding: clamp(24px, 3vw, 38px); min-height: 330px; display: flex; flex-direction: column; }
.decision-card > span { color: var(--green-2); font: 800 2.1rem/1 Georgia, serif; }
.decision-card h2 { margin: 48px 0 12px; font-size: 1.45rem; line-height: 1.35; }
.decision-card p { margin: 0 0 26px; color: var(--muted); }
.decision-card a, .text-link { margin-top: auto; color: var(--green); font-weight: 800; text-decoration-thickness: 1px; text-underline-offset: 5px; }
.decision-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); transition: .2s ease; }
.guide-strip {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 30px;
  padding: clamp(30px, 5vw, 58px);
  margin: 0 0 80px;
  background: var(--green);
  color: #f8fff9;
  border-radius: var(--radius);
  overflow: hidden;
  position: relative;
}
.guide-strip::after { content: ""; position: absolute; width: 260px; height: 260px; right: -90px; top: -120px; border: 50px solid rgba(230,255,115,.16); border-radius: 50%; }
.guide-strip .kicker { color: var(--acid); }
.guide-strip h2 { margin: 10px 0 8px; font: 700 clamp(1.8rem, 3.5vw, 3.4rem)/1.2 "Yu Mincho", YuMincho, serif; }
.guide-strip p { max-width: 640px; margin: 0; color: rgba(248,255,249,.72); }
.button {
  appearance: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 12px 22px;
  border: 0;
  border-radius: 99px;
  background: var(--green);
  color: white;
  font-weight: 800;
  text-decoration: none;
  cursor: pointer;
}
.button:hover { background: var(--green-2); }
.button-light { position: relative; z-index: 2; background: var(--acid); color: var(--ink); white-space: nowrap; }
.button-light:hover { background: white; }

.article-body { width: min(780px, 100%); margin: 0 auto; }
.content-section { padding: 34px 0; border-top: 1px solid var(--line); }
.content-section h2, .sources h2 { margin: 0 0 18px; font: 700 clamp(1.55rem, 3vw, 2.35rem)/1.35 "Yu Mincho", YuMincho, serif; letter-spacing: -.025em; }
.content-section p { margin: 0 0 16px; color: #354239; }
.check-list { list-style: none; margin: 20px 0 0; padding: 0; display: grid; gap: 10px; }
.check-list li { position: relative; padding: 14px 18px 14px 46px; background: rgba(255,253,247,.7); border-radius: 14px; border: 1px solid rgba(23,33,28,.1); }
.check-list li::before { content: "✓"; position: absolute; left: 17px; top: 13px; color: var(--green-2); font-weight: 900; }

.interactive-panel {
  width: min(900px, 100%);
  margin: 0 auto 70px;
  padding: clamp(24px, 5vw, 54px);
  background: var(--card);
  border: 1px solid rgba(23, 33, 28, .13);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.panel-heading { margin-bottom: 28px; }
.panel-heading > span { color: var(--green-2); font-size: .68rem; font-weight: 900; letter-spacing: .18em; }
.panel-heading h2 { margin: 8px 0 6px; font: 700 clamp(1.7rem, 3vw, 2.8rem)/1.25 "Yu Mincho", YuMincho, serif; }
.panel-heading p { margin: 0; color: var(--muted); }
#diagnosis-form { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.question { cursor: pointer; }
.question input { position: absolute; opacity: 0; pointer-events: none; }
.question > span { display: flex; align-items: flex-start; min-height: 90px; gap: 13px; padding: 18px; border: 1px solid var(--line); border-radius: 16px; background: white; transition: .18s ease; }
.question > span b { color: var(--green-2); font: 800 1.05rem/1.5 Georgia, serif; }
.question input:checked + span { border-color: var(--green); background: rgba(191,233,214,.38); box-shadow: 0 0 0 2px var(--green) inset; }
.question input:focus-visible + span { outline: 3px solid var(--orange); outline-offset: 2px; }
#diagnosis-form .button, .number-grid .button { margin-top: 12px; grid-column: 1 / -1; }
.result { margin-top: 26px; padding: 24px; border-radius: 18px; background: var(--green); color: white; }
.result h3 { margin: 0 0 8px; font-size: 1.45rem; }
.result p { margin: 0; color: rgba(255,255,255,.8); }
.result strong { color: var(--acid); }

.number-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.number-field { display: grid; gap: 7px; color: var(--muted); font-size: .84rem; font-weight: 700; }
.number-field > div { display: grid; grid-template-columns: 1fr auto; align-items: center; overflow: hidden; border: 1px solid var(--line); border-radius: 14px; background: white; }
.number-field input { width: 100%; min-width: 0; padding: 14px 16px; border: 0; background: transparent; color: var(--ink); font-weight: 800; font-size: 1.1rem; }
.number-field input:focus { outline: 3px solid var(--mint); outline-offset: -3px; }
.number-field em { padding: 0 15px; color: var(--muted); font-style: normal; }
.result-grid { grid-template-columns: repeat(2, 1fr); gap: 14px; }
.result-grid[hidden] { display: none; }
.result-grid:not([hidden]) { display: grid; }
.metric { padding: 14px; border: 1px solid rgba(255,255,255,.18); border-radius: 14px; }
.metric span { display: block; color: rgba(255,255,255,.68); font-size: .76rem; }
.metric b { display: block; margin-top: 3px; color: var(--acid); font-size: 1.35rem; }
.result-summary { grid-column: 1 / -1; }

.tool-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; margin: 0 auto 80px; }
.tool-card { padding: clamp(24px, 4vw, 42px); }
.tool-meta { display: flex; justify-content: space-between; gap: 15px; color: var(--green-2); font-size: .72rem; font-weight: 800; }
.tool-meta small { color: var(--muted); font-weight: 600; }
.tool-card h2 { margin: 18px 0 8px; font: 700 clamp(1.75rem, 3vw, 2.5rem)/1.2 "Yu Mincho", YuMincho, serif; }
.tool-job { min-height: 58px; color: var(--muted); }
.tool-card dl { margin: 24px 0; }
.tool-card dt { margin-top: 14px; color: var(--green-2); font-size: .72rem; font-weight: 900; letter-spacing: .08em; }
.tool-card dd { margin: 4px 0 0; }
.ad-label { display: inline-block; margin: 0 0 8px; padding: 2px 8px; border: 1px solid var(--line); border-radius: 99px; color: var(--muted); font-size: .7rem; }

.sources { width: min(780px, 100%); margin: 50px auto 0; padding-top: 36px; border-top: 2px solid var(--ink); }
.sources ol { margin: 0; padding-left: 1.4rem; }
.sources li { padding: 9px 0; }
.sources a { font-weight: 700; text-underline-offset: 4px; }
.sources span { display: block; color: var(--muted); font-size: .78rem; }

.site-footer {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 30px 60px;
  padding: 52px 0 40px;
  border-top: 1px solid rgba(23,33,28,.18);
}
.site-footer b { letter-spacing: .12em; }
.site-footer p { margin: 5px 0 0; color: var(--muted); font-size: .85rem; }
.site-footer nav { display: flex; flex-wrap: wrap; gap: 12px 24px; }
.site-footer nav a { font-size: .82rem; }
.site-footer .copyright { grid-column: 1 / -1; margin-top: 30px; font-size: .7rem; letter-spacing: .08em; }

@media (max-width: 840px) {
  .site-header { align-items: flex-start; padding: 20px 0; }
  .site-header nav { justify-content: flex-end; flex-wrap: wrap; }
  .hero { grid-template-columns: 1fr; min-height: auto; }
  .hero-orbit { width: min(320px, 78vw); justify-self: center; }
  .decision-grid { grid-template-columns: 1fr; }
  .decision-card { min-height: 260px; }
  .decision-card h2 { margin-top: 28px; }
  .guide-strip { grid-template-columns: 1fr; }
  .tool-grid { grid-template-columns: 1fr; }
}

@media (max-width: 620px) {
  .page-shell { width: min(100% - 22px, 1180px); }
  .site-header { display: grid; gap: 18px; }
  .site-header nav { justify-content: flex-start; gap: 10px 18px; }
  .site-header nav a { font-size: .78rem; }
  main { padding-top: 24px; }
  .hero { padding-top: 40px; }
  .hero h1 { font-size: clamp(2.4rem, 13vw, 4.4rem); }
  .hero-orbit { width: 235px; }
  #diagnosis-form, .number-grid { grid-template-columns: 1fr; }
  .question > span { min-height: auto; }
  .result-grid:not([hidden]) { grid-template-columns: 1fr; }
  .result-summary { grid-column: auto; }
  .site-footer { grid-template-columns: 1fr; }
  .site-footer .copyright { grid-column: auto; }
}