:root {
  --ink: #101418;
  --muted: #55615c;
  --green: #0d4a38;
  --green-deep: #073428;
  --green-soft: #e8f3ee;
  --yellow: #ffca05;
  --paper: #fffdf8;
  --line: #dce4df;
  --shadow: 0 18px 50px rgba(15, 50, 39, 0.12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: "Noto Sans JP", "Yu Gothic", "Hiragino Kaku Gothic ProN", sans-serif; line-height: 1.8; }
img { display: block; width: 100%; height: auto; }
a { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
a:focus-visible, button:focus-visible { outline: 3px solid var(--yellow); outline-offset: 4px; }
.shell { width: min(1180px, calc(100% - 40px)); margin-inline: auto; }
.shell-narrow { width: min(880px, calc(100% - 40px)); margin-inline: auto; }

.site-header { min-height: 72px; padding: 12px max(20px, calc((100% - 1180px) / 2)); display: flex; align-items: center; justify-content: space-between; gap: 20px; color: #fff; background: #101418; }
.brand { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; font-weight: 900; }
.brand span { padding: 7px 12px; border-radius: 8px; color: #111; background: var(--yellow); font-size: 22px; }
.header-contact { padding: 10px 18px; border-radius: 8px; color: #111; background: var(--yellow); text-decoration: none; font-weight: 900; }
.breadcrumb { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; padding-block: 18px; color: var(--muted); font-size: 14px; }
.breadcrumb a { font-weight: 800; }

.hero { display: grid; grid-template-columns: 1.2fr 0.8fr; min-height: 520px; overflow: hidden; border-radius: 28px; background: var(--green-deep); box-shadow: var(--shadow); }
.hero-image img { height: 100%; object-fit: cover; }
.hero-copy { display: flex; flex-direction: column; justify-content: center; padding: clamp(32px, 5vw, 68px); color: #fff; }
.audience, .case-label { margin: 0 0 12px; color: #b9f2da; font-size: 14px; font-weight: 900; letter-spacing: 0.08em; }
.case-label { color: var(--green); }
h1, h2, h3, p { margin-top: 0; }
h1 { margin-bottom: 22px; font-size: clamp(36px, 5vw, 62px); line-height: 1.2; letter-spacing: -0.03em; }
h2 { margin-bottom: 20px; font-size: clamp(28px, 4vw, 44px); line-height: 1.35; }
h3 { line-height: 1.45; }
.hero-copy > p:not(.audience) { margin-bottom: 28px; font-size: 18px; font-weight: 700; }
.button { display: inline-flex; min-height: 52px; align-items: center; justify-content: center; padding: 12px 22px; border: 2px solid transparent; border-radius: 10px; text-align: center; text-decoration: none; font-weight: 900; line-height: 1.4; }
.button-primary { color: #111; background: var(--yellow); }
.button-secondary { border-color: #fff; color: #fff; background: transparent; }

.section { padding-block: clamp(64px, 9vw, 112px); }
.section-soft { background: var(--green-soft); }
.section-heading { max-width: 850px; margin: 0 auto 42px; text-align: center; }
.section-heading > p:not(.case-label) { color: var(--muted); font-size: 18px; font-weight: 700; }
.issues ul { display: grid; gap: 12px; margin: 32px 0 0; padding: 0; list-style: none; }
.issues li { display: flex; gap: 14px; align-items: flex-start; padding: 18px 20px; border: 1px solid var(--line); border-radius: 12px; background: #fff; font-weight: 800; }
.issues li span { color: var(--green); font-size: 20px; }
.service-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.service-card { padding: 28px; border: 1px solid #c7ddd2; border-radius: 18px; background: #fff; box-shadow: 0 10px 25px rgba(13, 74, 56, 0.07); }
.service-card h3 { margin-bottom: 10px; color: var(--green); font-size: 22px; }
.service-card p { margin-bottom: 0; color: var(--muted); font-weight: 700; }

.case-section { padding-bottom: 0; }
.exterior-comparison, .before-block, .steps, .after-block { margin-top: 64px; }
.before-block > h3, .steps > h3, .after-block > h3, .subsection-heading h3 { margin-bottom: 22px; font-size: clamp(24px, 3vw, 34px); }
.subsection-heading { margin-bottom: 22px; }
.subsection-heading h3 { margin-bottom: 8px; }
.subsection-heading p { max-width: 760px; margin-bottom: 0; color: var(--muted); font-weight: 700; }
.after-block > p { max-width: 760px; color: var(--muted); font-weight: 700; }
.photo-grid { display: grid; gap: 20px; }
.photo-grid-two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.photo-grid-three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.comparison-item { position: relative; min-width: 0; }
.comparison-label { position: absolute; z-index: 2; top: 14px; left: 14px; padding: 7px 14px; border-radius: 999px; color: #fff; background: var(--green-deep); font-size: 14px; font-weight: 900; box-shadow: 0 4px 14px rgba(0, 0, 0, 0.2); }
.photo-card, .step-photo { margin: 0; overflow: hidden; border-radius: 16px; background: #fff; box-shadow: var(--shadow); }
.photo-button { display: block; width: 100%; padding: 0; border: 0; cursor: zoom-in; background: transparent; }
.photo-button img { aspect-ratio: 4 / 3; object-fit: cover; transition: transform 180ms ease; }
.photo-button:hover img { transform: scale(1.02); }
figcaption { padding: 14px 16px 18px; color: var(--muted); font-size: 14px; font-weight: 800; }
.steps { display: grid; gap: 24px; }
.steps > h3 { margin-bottom: 0; }
.step-card { display: grid; grid-template-columns: 0.82fr 1.18fr; overflow: hidden; border: 1px solid var(--line); border-radius: 20px; background: #fff; box-shadow: var(--shadow); }
.step-card:nth-of-type(even) .step-copy { order: 2; }
.step-copy { display: flex; flex-direction: column; justify-content: center; padding: clamp(26px, 4vw, 48px); }
.step-number { color: var(--green); font-size: 16px; font-weight: 900; letter-spacing: 0.12em; }
.step-copy h3 { margin: 6px 0 12px; font-size: 28px; }
.step-copy p { margin-bottom: 0; color: var(--muted); font-weight: 700; }
.step-photo { border-radius: 0; box-shadow: none; }
.step-photo .photo-button, .step-photo img { height: 100%; }
.step-photo img { min-height: 360px; object-fit: cover; }

.management { margin-top: 96px; color: #fff; background: var(--green); text-align: center; }
.management p { margin-bottom: 0; font-size: 18px; font-weight: 700; }
.cta-card { padding: clamp(34px, 6vw, 68px); border-radius: 24px; color: #fff; background: #101418; text-align: center; box-shadow: var(--shadow); }
.cta-card p { max-width: 780px; margin: 0 auto 28px; font-weight: 700; }
.cta-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 14px; }
.site-footer { padding: 28px 20px; color: #fff; background: #101418; text-align: center; font-weight: 800; }
.site-footer p { margin: 0; }

.lightbox { width: min(94vw, 1200px); max-width: none; padding: 42px 16px 16px; border: 0; border-radius: 16px; background: #111; }
.lightbox::backdrop { background: rgba(0, 0, 0, 0.82); }
.lightbox img { max-height: 82vh; object-fit: contain; }
.lightbox-close { position: absolute; top: 4px; right: 10px; width: 36px; height: 36px; border: 0; color: #fff; background: transparent; cursor: pointer; font-size: 30px; }

@media (max-width: 760px) {
  .shell, .shell-narrow { width: min(100% - 24px, 1180px); }
  .site-header { min-height: 62px; padding: 9px 12px; }
  .brand span { padding: 5px 9px; font-size: 18px; }
  .brand b { font-size: 14px; }
  .header-contact { padding: 8px 12px; font-size: 14px; }
  .hero { grid-template-columns: 1fr; min-height: 0; border-radius: 18px; }
  .hero-image { min-height: 270px; }
  .hero-image img { height: 270px; }
  .hero-copy { padding: 28px 22px 32px; }
  .hero-copy > p:not(.audience) { font-size: 16px; }
  .service-grid, .photo-grid-two, .photo-grid-three, .step-card { grid-template-columns: 1fr; }
  .step-card:nth-of-type(even) .step-copy { order: 0; }
  .step-photo img { min-height: 260px; }
  .management { margin-top: 64px; }
  .button { width: 100%; }
}

/* 2026-09-02: 植栽管理向け 70% / 25% / 5% 配色補正 */
:root {
  --ink: #0f172a;
  --muted: #40534a;
  --green: #1b4332;
  --green-deep: #1b4332;
  --green-soft: #eaf3ec;
  --yellow: #f79428;
  --paper: #f4f7f4;
  --line: #cad8cf;
  --shadow: 0 18px 50px rgba(27, 67, 50, 0.12);
}
.site-header,
.site-footer { background: #1b4332; }
.brand span,
.header-contact,
.button-primary { color: var(--ink); background: var(--yellow); }
.management { background: var(--green); }
.cta-card { background: #1b4332; }

/* 2026-09-03: 濃緑の大面積を抑え、葉の気配と緑の縁で植栽らしさを示す */
.management {
  position: relative;
  margin-top: 56px;
  padding-block: 0;
  color: var(--ink);
  background: transparent;
  text-align: left;
}
.management .shell-narrow {
  position: relative;
  overflow: hidden;
  padding: 40px 48px;
  border: 2px solid #8aac98;
  border-left: 10px solid var(--green);
  border-radius: 22px;
  background: #fffdf8;
  box-shadow: 0 12px 30px rgba(27, 67, 50, .08);
}
.management h2,
.management p {
  position: relative;
  z-index: 1;
}
.management h2 { color: var(--green); }
.management p { color: var(--muted); }
.management .shell-narrow::before,
.management .shell-narrow::after {
  content: "";
  position: absolute;
  right: 28px;
  border-radius: 100% 0 100% 0;
  background: rgba(27, 67, 50, .07);
  pointer-events: none;
}
.management .shell-narrow::before {
  top: 18px;
  width: 120px;
  height: 54px;
  transform: rotate(-24deg);
}
.management .shell-narrow::after {
  top: 64px;
  right: 74px;
  width: 84px;
  height: 38px;
  transform: rotate(18deg);
}
main > .toshin-mascot-guide--check {
  margin: 28px auto 0;
  border-color: #8aac98;
  border-left: 8px solid var(--green);
  box-shadow: 6px 6px 0 #e3e2db;
}
.section.cta { padding-block: 28px 0; }
.cta-card {
  position: relative;
  padding: 42px 48px;
  color: var(--ink);
  background: #fffdf8;
  border: 2px solid var(--green);
  box-shadow: 0 12px 30px rgba(27, 67, 50, .08);
}
.cta-card h2 { color: var(--green); }
.cta-card p { color: var(--muted); }
.cta-card .button-secondary {
  color: var(--green);
  border-color: var(--green);
  background: #fff;
}

@media (max-width: 760px) {
  .management { margin-top: 40px; }
  .management .shell-narrow {
    padding: 28px 20px;
    border-left-width: 7px;
  }
  .management .shell-narrow::before {
    right: -24px;
    width: 96px;
    height: 42px;
  }
  .management .shell-narrow::after { display: none; }
  main > .toshin-mascot-guide--check { margin-top: 20px; }
  .section.cta { padding-top: 20px; }
  .cta-card { padding: 28px 20px; }
}