/* ForEARTH — 田んぼの断面から広がる、いのちのつながり */

:root {
  --bg: #edf1e8;
  --paper: #f7f9f2;
  --ink: #1d2b21;
  --ink-soft: #44564a;
  --leaf: #3c6a3a;
  --deep: #1c3427;
  --deep-2: #264636;
  --water: #8db5ae;
  --water-pale: #dde9e2;
  --reed: #b38a2e;
  --reed-soft: #e7d7a8;
  --soil: #4a3a2b;
  --line: rgba(29, 43, 33, 0.18);
  --line-light: rgba(247, 249, 242, 0.28);

  --serif: "Shippori Mincho B1", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --sans: "Zen Kaku Gothic New", "Hiragino Sans", "Yu Gothic", system-ui, sans-serif;

  --gutter: clamp(20px, 5vw, 72px);
  --maxw: 1120px;
  color-scheme: light;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.9;
  font-weight: 400;
  letter-spacing: 0.02em;
  -webkit-font-smoothing: antialiased;
}

img, svg { max-width: 100%; }

a { color: inherit; }

:focus-visible {
  outline: 3px solid var(--reed);
  outline-offset: 3px;
  border-radius: 2px;
}

.skip {
  position: absolute;
  left: -999px;
  top: 8px;
  background: var(--paper);
  color: var(--ink);
  padding: 8px 14px;
  z-index: 100;
}
.skip:focus { left: 8px; }

.wrap {
  width: 100%;
  max-width: calc(var(--maxw) + var(--gutter) * 2);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* ---------- header ---------- */

.site-header { position: relative; z-index: 10; }

.site-header .wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 32px;
  padding-block: 20px;
}

.wordmark {
  font-family: var(--serif);
  font-weight: 700;
  font-size: 1.5rem;
  letter-spacing: 0.08em;
  text-decoration: none;
  line-height: 1.2;
}

.wordmark small {
  display: block;
  font-family: var(--sans);
  font-weight: 500;
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  color: var(--ink-soft);
}

.site-nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 28px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-nav a {
  display: inline-block;
  padding: 6px 0;
  font-weight: 500;
  font-size: 0.95rem;
  text-decoration: none;
  border-bottom: 2px solid transparent;
}

.site-nav a:hover { border-bottom-color: var(--water); }
.site-nav a[aria-current="page"] { border-bottom-color: var(--leaf); font-weight: 700; }

/* ---------- headings & prose ---------- */

h1, h2, h3, h4 {
  font-family: var(--serif);
  font-weight: 700;
  letter-spacing: 0.05em;
  margin: 0;
}

h2 {
  font-size: clamp(1.55rem, 3.2vw, 2.2rem);
  line-height: 1.5;
}

h3 {
  font-size: 1.25rem;
  line-height: 1.6;
}

p { margin: 0 0 1.2em; }

.prose p { max-width: 38em; }
.prose p:last-child { margin-bottom: 0; }

.nb { display: inline-block; }

.sec { padding-block: clamp(64px, 10vw, 128px); }
.sec-tight { padding-block: clamp(48px, 7vw, 88px); }

.sec-head { margin-bottom: clamp(28px, 4vw, 52px); }
.sec-head p { max-width: 38em; margin-top: 16px; color: var(--ink-soft); }

/* ---------- buttons ---------- */

.btn {
  display: inline-block;
  padding: 0.85em 1.7em;
  border: 1.5px solid currentColor;
  border-radius: 4px;
  font-weight: 700;
  font-size: 0.98rem;
  letter-spacing: 0.06em;
  text-decoration: none;
  line-height: 1.5;
  transition: background-color 0.2s, color 0.2s, border-color 0.2s;
}

.btn:hover { background: var(--ink); border-color: var(--ink); color: var(--paper); }

.btn-solid { background: var(--leaf); border-color: var(--leaf); color: #fff; }
.btn-solid:hover { background: var(--deep); border-color: var(--deep); }

.btn-light { color: var(--paper); }
.btn-light:hover { background: var(--paper); border-color: var(--paper); color: var(--deep); }

.btn-row { display: flex; flex-wrap: wrap; gap: 14px; }

/* ---------- home: hero ---------- */

.hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, var(--bg) 0%, var(--water-pale) 100%);
}

.hero .site-header { background: transparent; }

.hero-copy {
  padding-top: clamp(28px, 6vw, 80px);
  padding-bottom: clamp(32px, 5vw, 64px);
}

.hero h1 {
  font-size: clamp(1.6rem, 6vw, 4.1rem);
  line-height: 1.4;
  letter-spacing: 0.06em;
  max-width: 14em;
}

.hero-tagline {
  margin: clamp(18px, 2.4vw, 28px) 0 0;
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(1.05rem, 1.8vw, 1.3rem);
  color: var(--leaf);
  letter-spacing: 0.1em;
}

.hero-lead {
  max-width: 36em;
  margin: 22px 0 28px;
  color: var(--ink-soft);
}

.hero-field {
  display: block;
  width: 100%;
  height: clamp(250px, 31vw, 440px);
}

.hero-field svg { display: block; width: 100%; height: 100%; }

.m { opacity: 0; transform-box: fill-box; transform-origin: center; animation: bloom 0.9s ease-out forwards; }

@keyframes bloom {
  from { opacity: 0; transform: scale(0.3); }
  to   { opacity: 1; transform: scale(1); }
}

/* ---------- home: chain ---------- */

.chain {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0 clamp(16px, 2.4vw, 36px);
}

.chain li {
  position: relative;
  padding-top: 44px;
}

.chain li::before {
  content: "";
  position: absolute;
  top: 11px;
  left: 0;
  right: calc(clamp(16px, 2.4vw, 36px) * -1);
  height: 2px;
  background: var(--water);
}

.chain li:last-child::before { right: 0; background: linear-gradient(90deg, var(--water), transparent); }

.chain li::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--leaf);
  border: 4px solid var(--bg);
  box-shadow: 0 0 0 2px var(--leaf);
}

.chain li:nth-child(2)::after { background: var(--reed); box-shadow: 0 0 0 2px var(--reed); }
.chain li:nth-child(3)::after { background: var(--water); box-shadow: 0 0 0 2px var(--water); }
.chain li:nth-child(4)::after { background: var(--deep); box-shadow: 0 0 0 2px var(--deep); }

.chain h3 { margin-bottom: 8px; }
.chain p { margin: 0; color: var(--ink-soft); font-size: 0.98rem; line-height: 1.85; }

/* ---------- home: business ---------- */

.biz {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: clamp(24px, 4vw, 56px);
  align-items: start;
}

.biz-block h3 { font-size: clamp(1.35rem, 2.4vw, 1.7rem); margin-bottom: 8px; }

.biz-lead { margin-bottom: 24px; color: var(--ink-soft); }

.items { margin: 0; padding: 0; list-style: none; }

.items li {
  padding: 18px 0;
  border-top: 1px solid var(--line);
}
.items li:last-child { border-bottom: 1px solid var(--line); }

.items h4 { font-size: 1.08rem; line-height: 1.6; margin-bottom: 4px; }
.items p { margin: 0; font-size: 0.98rem; color: var(--ink-soft); }

.biz-water {
  background: var(--deep);
  color: var(--paper);
  padding: clamp(24px, 3.4vw, 44px);
  border-radius: 6px;
}

.biz-water .biz-lead { color: rgba(247, 249, 242, 0.78); }
.biz-water .items li { border-color: var(--line-light); }
.biz-water .items p { color: rgba(247, 249, 242, 0.78); }

/* ---------- home: products ---------- */

.products {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(16px, 2.4vw, 28px);
}

.product {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  min-height: clamp(300px, 36vw, 420px);
  padding: clamp(22px, 3vw, 36px);
  border-radius: 6px;
  color: var(--paper);
  text-decoration: none;
  overflow: hidden;
}

.product h3 { font-size: clamp(1.5rem, 2.8vw, 2rem); }
.product .kind { font-size: 0.88rem; letter-spacing: 0.1em; opacity: 0.85; margin-bottom: 6px; }
.product p { margin: 12px 0 18px; max-width: 26em; font-size: 0.98rem; }
.product .more { font-weight: 700; border-bottom: 2px solid currentColor; align-self: flex-start; padding-bottom: 2px; }
.product:hover .more { color: var(--reed-soft); }

.product-hanasaku {
  background:
    radial-gradient(circle at 18% 22%, rgba(231, 215, 168, 0.9) 0 4px, transparent 5px),
    radial-gradient(circle at 34% 40%, rgba(141, 181, 174, 0.9) 0 6px, transparent 7px),
    radial-gradient(circle at 62% 26%, rgba(247, 249, 242, 0.8) 0 3px, transparent 4px),
    radial-gradient(circle at 78% 46%, rgba(231, 215, 168, 0.8) 0 7px, transparent 8px),
    radial-gradient(circle at 48% 58%, rgba(141, 181, 174, 0.7) 0 3px, transparent 4px),
    radial-gradient(circle at 88% 20%, rgba(179, 138, 46, 0.9) 0 5px, transparent 6px),
    radial-gradient(circle at 10% 52%, rgba(247, 249, 242, 0.7) 0 5px, transparent 6px),
    linear-gradient(180deg, #5b4934 0%, #2e241a 100%);
}

.product-taori {
  background:
    radial-gradient(circle at 20% 28%, rgba(247, 249, 242, 0.55) 0 2px, transparent 3px),
    radial-gradient(circle at 44% 18%, rgba(247, 249, 242, 0.45) 0 3px, transparent 4px),
    radial-gradient(circle at 70% 34%, rgba(247, 249, 242, 0.5) 0 2px, transparent 3px),
    radial-gradient(circle at 84% 22%, rgba(247, 249, 242, 0.4) 0 4px, transparent 5px),
    radial-gradient(circle at 30% 50%, rgba(247, 249, 242, 0.35) 0 3px, transparent 4px),
    radial-gradient(circle at 60% 52%, rgba(247, 249, 242, 0.5) 0 2px, transparent 3px),
    linear-gradient(160deg, #3d5a4c 0%, #1c3427 100%);
}

/* ---------- home: closing ---------- */

.closing {
  background: var(--deep);
  color: var(--paper);
}

.closing h2 { font-size: clamp(1.8rem, 4vw, 2.8rem); margin-bottom: 20px; }
.closing p { max-width: 34em; color: rgba(247, 249, 242, 0.82); margin: 0; }

/* ---------- contact ---------- */

.contact {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 24px clamp(24px, 5vw, 72px);
  align-items: center;
  padding-block: clamp(48px, 7vw, 88px);
  border-top: 1px solid var(--line);
}

.contact h2 { margin-bottom: 8px; }
.contact p { margin: 0; color: var(--ink-soft); max-width: 34em; }
.contact .mail { margin-top: 10px; font-weight: 700; color: var(--ink); }

/* ---------- footer ---------- */

.site-footer {
  background: var(--deep);
  color: rgba(247, 249, 242, 0.8);
  font-size: 0.88rem;
}

.site-footer .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 32px;
  justify-content: space-between;
  align-items: center;
  padding-block: 28px;
}

.site-footer ul { display: flex; flex-wrap: wrap; gap: 4px 24px; list-style: none; margin: 0; padding: 0; }
.site-footer a { text-decoration: none; }
.site-footer a:hover { text-decoration: underline; }
.site-footer p { margin: 0; }

/* ---------- product pages ---------- */

.page-hero {
  background: linear-gradient(180deg, var(--bg) 0%, var(--water-pale) 100%);
  border-bottom: 1px solid var(--line);
}

.page-hero-copy { padding-block: clamp(36px, 7vw, 88px) clamp(40px, 6vw, 72px); }

.page-hero h1 {
  font-size: clamp(2.2rem, 6vw, 4rem);
  line-height: 1.3;
  letter-spacing: 0.08em;
}

.page-hero .kind {
  margin: 14px 0 0;
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(1.02rem, 1.8vw, 1.25rem);
  color: var(--leaf);
  letter-spacing: 0.08em;
}

.two-col {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.5fr);
  gap: clamp(20px, 5vw, 72px);
  align-items: start;
}

.two-col + .two-col { margin-top: clamp(40px, 6vw, 80px); }

.fact {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin: 28px 0 0;
}

.fact div { padding: 16px 0; border-top: 2px solid var(--leaf); }
.fact dt { font-size: 0.9rem; color: var(--ink-soft); }
.fact dd { margin: 4px 0 0; font-family: var(--serif); font-weight: 700; font-size: 1.35rem; line-height: 1.5; }

.band-deep { background: var(--deep); color: var(--paper); }
.band-deep .sec-head p { color: rgba(247, 249, 242, 0.78); }

.big-sentence {
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(1.7rem, 4.4vw, 3rem);
  line-height: 1.5;
  letter-spacing: 0.05em;
  margin: 0 0 20px;
}

.form-types { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(16px, 2.4vw, 28px); margin-top: 28px; }
.form-type { padding: 22px 0; border-top: 2px solid var(--leaf); }
.form-type h3 { margin-bottom: 4px; }
.form-type p { margin: 0; color: var(--ink-soft); font-size: 0.98rem; }

/* composition bars */

.bars { list-style: none; margin: 0; padding: 0; max-width: 640px; }
.bars li {
  display: grid;
  grid-template-columns: 9em 1fr 4.2em;
  gap: 12px;
  align-items: center;
  padding: 9px 0;
}
.bars .label { font-weight: 500; }
.bars .track { height: 14px; background: rgba(247, 249, 242, 0.16); border-radius: 2px; }
.bars .fill { display: block; height: 100%; width: var(--w); background: var(--reed-soft); border-radius: 2px; }
.bars .val { text-align: right; font-family: var(--serif); font-weight: 700; font-variant-numeric: tabular-nums; }
.bars-note { margin-top: 14px; font-size: 0.88rem; color: rgba(247, 249, 242, 0.7); }

/* grain sizes */

.grains { list-style: none; margin: 0; padding: 0; }
.grain {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 8px clamp(20px, 4vw, 56px);
  align-items: center;
  padding: 26px 0;
  border-top: 1px solid var(--line);
}
.grain:last-child { border-bottom: 1px solid var(--line); }

.grain-art { display: flex; align-items: center; justify-content: center; height: 100px; position: relative; }
.grain-art i { display: block; border-radius: 50%; background: radial-gradient(circle at 35% 30%, #7a8f84, #3d5a4c 70%); }
.grain-big i { width: 92px; height: 92px; }
.grain-mid i { width: 30px; height: 30px; margin: 0 4px; border-radius: 42% 58% 50% 50%; }
.grain-fine i { width: 5px; height: 5px; margin: 2px; display: inline-block; }
.grain-fine { flex-wrap: wrap; align-content: center; padding-inline: 14px; }

.grain h3 { margin-bottom: 2px; }
.grain .size { font-weight: 700; color: var(--leaf); margin-bottom: 6px; }
.grain p { margin: 0; color: var(--ink-soft); max-width: 36em; }

.grains-note { margin-top: 14px; font-size: 0.88rem; color: var(--ink-soft); }

.downloads { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 14px; }

.note { font-size: 0.9rem; color: var(--ink-soft); margin-top: 20px; }

/* ---------- responsive ---------- */

@media (max-width: 900px) {
  .biz, .products, .two-col, .contact, .form-types { grid-template-columns: 1fr; }
  .contact { align-items: start; }

  .chain { grid-template-columns: 1fr; gap: 0; }
  .chain li { padding: 0 0 32px 48px; }
  .chain li::before {
    top: 12px;
    bottom: -12px;
    left: 11px;
    right: auto;
    width: 2px;
    height: auto;
  }
  .chain li:last-child::before { background: linear-gradient(180deg, var(--water), transparent); }
  .chain li::after { top: 0; }
}

@media (max-width: 560px) {
  body { font-size: 1rem; }
  .bars li { grid-template-columns: 6.5em 1fr 3.8em; gap: 8px; font-size: 0.94rem; }
  .grain { grid-template-columns: 84px 1fr; }
  .grain-big i { width: 68px; height: 68px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .m { opacity: 1; animation: none; }
  .btn { transition: none; }
}

/* ---------- ForEARTH米 ---------- */

.on-dark { color: var(--paper); }
.on-dark .wordmark { color: var(--paper); }
.on-dark .wordmark small { color: rgba(247, 249, 242, 0.7); }
.on-dark .site-nav a { color: var(--paper); }
.on-dark .site-nav a:hover { border-bottom-color: var(--reed-soft); }
.on-dark .site-nav a[aria-current="page"] { border-bottom-color: var(--reed-soft); }

.rice-hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, #1c3427 0%, #16291f 100%);
}

.rice-hero-inner {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: clamp(16px, 4vw, 56px);
  align-items: end;
  padding-top: clamp(16px, 4vw, 48px);
}

.rice-hero-copy {
  align-self: center;
  padding-bottom: clamp(32px, 6vw, 88px);
}

.rice-hero h1 {
  font-size: clamp(2.4rem, 6vw, 4.8rem);
  line-height: 1.15;
  letter-spacing: 0.06em;
  white-space: nowrap;
}

.rice-story {
  margin: 18px 0 0;
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(1.15rem, 2.2vw, 1.55rem);
  line-height: 1.7;
  letter-spacing: 0.08em;
  color: var(--reed-soft);
}

.rice-lead { max-width: 30em; margin: 18px 0 26px; color: rgba(247, 249, 242, 0.82); }

.sold-pill {
  display: inline-block;
  margin: 0;
  padding: 0.35em 1.1em;
  border: 1.5px solid var(--reed-soft);
  border-radius: 999px;
  color: var(--reed-soft);
  font-weight: 700;
  letter-spacing: 0.08em;
}

.rice-hero-art { display: flex; justify-content: center; align-items: flex-end; }
.ear { display: block; width: 100%; height: auto; max-width: 440px; }
.rice-hero-art .ear { max-width: 560px; }

/* home: feature panel */

.rice-feature {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 24px;
  align-items: end;
  padding: clamp(24px, 4vw, 48px) clamp(24px, 4vw, 56px) 0;
  background: var(--deep);
  border-radius: 6px;
  overflow: hidden;
}

.rice-feature-copy { align-self: center; padding-bottom: clamp(24px, 4vw, 48px); }
.rice-feature-copy h2 { font-size: clamp(2rem, 4.5vw, 3.2rem); line-height: 1.2; letter-spacing: 0.06em; }
.rice-feature-copy .rice-story { margin: 14px 0 0; }
.rice-feature-copy .plain { margin: 16px 0 0; max-width: 28em; color: rgba(247, 249, 242, 0.82); }
.rice-feature-copy .sold-pill { margin: 20px 0 22px; }
.rice-feature-art .ear { max-width: 400px; margin-inline: auto; }

/* 4つの歴史 */

.histories { list-style: none; margin: 0; padding: 0; }

.histories li {
  display: grid;
  grid-template-columns: clamp(110px, 16vw, 190px) 1fr;
  gap: 8px 32px;
  align-items: center;
  padding: 22px 0;
  border-top: 1px solid var(--line);
}
.histories li:last-child { border-bottom: 1px solid var(--line); }

.histories .word {
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  line-height: 1.2;
  letter-spacing: 0.08em;
  color: #8a6612;
}

.histories h3 { margin-bottom: 4px; }
.histories p { margin: 0; max-width: 36em; color: var(--ink-soft); }

.textlink { margin-left: 0.6em; font-weight: 700; color: var(--leaf); text-underline-offset: 3px; }

/* 残留農薬 */

.pest {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: clamp(24px, 5vw, 72px);
  align-items: start;
}

.dots131 { display: flex; flex-wrap: wrap; gap: 8px; max-width: 520px; }
.dots131 i { display: block; width: 16px; height: 16px; border-radius: 50%; background: var(--leaf); }
.dots-note { margin: 14px 0 0; font-size: 0.9rem; color: var(--ink-soft); }

.spec { margin: 0; }
.spec > div {
  display: grid;
  grid-template-columns: 7.5em 1fr;
  gap: 12px;
  padding: 12px 0;
  border-top: 1px solid var(--line);
}
.spec > div:last-child { border-bottom: 1px solid var(--line); }
.spec dt { color: var(--ink-soft); font-size: 0.92rem; }
.spec dd { margin: 0; font-weight: 500; }

/* 根の長さ */

.fig { margin: 0; }
.fig svg { display: block; width: 100%; max-width: 720px; height: auto; }
.fig figcaption { margin-top: 12px; font-size: 0.9rem; color: rgba(247, 249, 242, 0.75); }

@media (max-width: 900px) {
  .rice-hero-inner, .rice-feature, .pest { grid-template-columns: 1fr; }
  .rice-hero-art .ear { max-width: 340px; }
  .rice-feature-art .ear { max-width: 280px; }
}

@media (max-width: 560px) {
  .histories li { grid-template-columns: 76px 1fr; gap: 4px 16px; }
  .spec > div { grid-template-columns: 6em 1fr; }
}