:root {
  --bg: #f9fbf6;
  --paper: #fffdf8;
  --text: #2f3a2f;
  --subtext: #666;
  --accent: #8fbf7a;
  --accent-dark: #4f7a4f;
  --accent-soft: #eef6ea;
  --line: #dbe7d3;
  --gold-soft: #f5ead2;
  --shadow: 0 6px 20px rgba(0, 0, 0, 0.06);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 120px;
}

body {
  margin: 0;
  font-family: -apple-system, "Yu Gothic", "Hiragino Sans", Meiryo, sans-serif;
  background:
    radial-gradient(circle at top left, #eef6ea 0, transparent 34%),
    linear-gradient(180deg, #f9fbf6 0%, #fffdf8 100%);
  color: var(--text);
  line-height: 2;
  font-size: 17px;
}

a {
  color: inherit;
}

.skip-link {
  position: absolute;
  left: 12px;
  top: 0;
  transform: translateY(-120%);
  
  background: rgba(143, 191, 122, 0.18); /* ←やさしい色に */
  color: var(--accent-dark);
  
  padding: 8px 14px;
  border-radius: 999px;
  text-decoration: none;
  
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.05em;

  border: 1px solid rgba(143, 191, 122, 0.4);

  box-shadow: 0 2px 6px rgba(0,0,0,0.05); /* ←ほんの少し */
  
  transition: 0.25s;
}

.skip-link:focus {
  transform: translateY(12px);
}

/* header */
.sirocco-header {
  background: rgba(255, 253, 248, 0.94);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(8px);
}

.sirocco-header-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 18px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
}

.site-title {
  text-decoration: none;
  font-weight: 700;
  font-size: 15px;
  line-height: 1.5;
  color: var(--text);
}

.site-title span {
  display: block;
  color: var(--accent-dark);
  font-size: 22px;
  letter-spacing: 0.08em;
}

.sirocco-nav {
  display: flex;
  gap: 8px;
  font-size: 14px;
  background: rgba(238, 246, 234, 0.5);
  padding: 6px;
  border-radius: 999px;
}

.sirocco-nav a {
  display: inline-block;
  padding: 5px 10px;
  border-radius: 999px;
  text-decoration: none;
  color: var(--subtext);
  font-weight: 600;
  transition: 0.25s;
}

.sirocco-nav a:hover,
.sirocco-nav a:focus {
  color: var(--accent-dark);
  background: var(--accent-soft);
  text-decoration: none;
}

/* hero */
.hero {
  padding: 90px 24px 70px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: rgba(143, 191, 122, 0.16);
  top: -180px;
  right: -120px;
}

.hero::after {
  content: "しろっこ";
  position: absolute;
  right: 8%;
  bottom: 10px;
  font-size: 72px;
  font-weight: 700;
  color: rgba(143, 191, 122, 0.10);
  letter-spacing: 0.12em;
  white-space: nowrap;
}

.hero-inner {
  max-width: 860px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--accent-dark);
  font-size: 14px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0;
  font-size: clamp(34px, 6vw, 56px);
  letter-spacing: 0.12em;
  color: var(--accent-dark);
}

.hero-lead {
  margin: 28px auto 0;
  max-width: 720px;
  font-size: clamp(18px, 2.4vw, 22px);
  font-weight: 600;
  color: #405040;
}

/* content */
.content-section {
  padding: 46px 24px;
}

.soft-bg {
  background: rgba(238, 246, 234, 0.55);
  border-top: 1px solid rgba(219, 231, 211, 0.6);
  border-bottom: 1px solid rgba(219, 231, 211, 0.6);
}

.content-card {
  max-width: 900px;
  margin: 0 auto;
  background: rgba(255, 253, 248, 0.94);
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: clamp(28px, 5vw, 56px);
  box-shadow: var(--shadow);
}

.content-card h2 {
  margin: 0 0 28px;
  padding-left: 18px;
  border-left: 6px solid var(--accent);
  font-size: clamp(24px, 4vw, 34px);
  line-height: 1.5;
  color: var(--accent-dark);
}

.content-card p {
  margin: 0 0 24px;
}

.content-card p:last-child {
  margin-bottom: 0;
}

/* wind list */
.wind-list {
  display: grid;
  gap: 18px;
  margin-top: 28px;
}

.wind-item {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 22px 24px;
}

.wind-item h3 {
  margin: 0 0 8px;
  color: var(--accent-dark);
  font-size: 19px;
}

.wind-item p {
  margin: 0;
}

/* story */
.story-card {
  background:
    linear-gradient(135deg, rgba(245, 234, 210, 0.45), transparent 42%),
    rgba(255, 253, 248, 0.96);
}

.strong-message {
  margin-top: 32px !important;
  padding: 24px;
  background: var(--accent-soft);
  border-radius: 18px;
  border-left: 6px solid var(--accent);
  font-weight: 700;
  color: #405040;
}

/* awai */
.concept-box {
  margin: 34px 0;
  padding: 30px 24px;
  text-align: center;
  background:
    linear-gradient(135deg, #eef6ea, #fffdf8);
  border: 1px solid var(--line);
  border-radius: 22px;
}

.concept-box p {
  margin: 0;
  font-size: clamp(24px, 4vw, 34px);
  font-weight: 700;
  color: var(--accent-dark);
  letter-spacing: 0.08em;
}

.three-winds {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 28px;
}

.three-winds div {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 24px 18px;
  text-align: center;
}

.three-winds span {
  display: inline-block;
  margin-bottom: 10px;
  font-size: 20px;
  font-weight: 700;
  color: var(--accent-dark);
}

.three-winds p {
  margin: 0;
  font-size: 15px;
  color: var(--subtext);
}

/* closing */
.closing {
  padding: 70px 24px 80px;
  text-align: center;
}

.closing-inner {
  max-width: 820px;
  margin: 0 auto;
}

.closing p {
  margin: 0 0 30px;
  font-size: clamp(20px, 3vw, 28px);
  font-weight: 700;
  color: #405040;
}

.home-button {
  display: inline-block;
  color: var(--accent-dark);
  text-decoration: none;
  font-weight: 600;
  position: relative;
  padding-bottom: 4px;
}

.home-button::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: var(--accent);
  opacity: 0.5;
  transition: 0.3s;
}

.home-button:hover::after {
  opacity: 1;
}

/* footer */
.sirocco-footer {
  padding: 28px 20px;
  text-align: center;
  background: #eef6ea;
  border-top: 1px solid var(--line);
  color: var(--subtext);
  font-size: 14px;
}

.sirocco-footer p {
  margin: 4px 0;
}

/* page top */
.page-top {
  position: fixed;
  right: 18px;
  bottom: 18px;
  width: auto;
  height: auto;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(255, 253, 248, 0.86);
  color: var(--accent-dark);
  border: 1px solid var(--line);
  display: inline-block;
  text-decoration: none;
  box-shadow: none;
  font-size: 12px;
  font-weight: 600;

  /* ★ここを追加 */
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: 0.3s;
}

/* ★これを新しく追加 */
.page-top.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.page-top:hover,
.page-top:focus {
  background: var(--accent-soft);
}

/* responsive */
@media (max-width: 760px) {
  body {
    font-size: 16px;
    line-height: 1.9;
  }

  .sirocco-header-inner {
    display: block;
    padding: 14px 18px;
  }

  .sirocco-nav {
    margin-top: 12px;
    flex-wrap: wrap;
    gap: 10px 14px;
  }

  .hero {
    padding: 64px 18px 50px;
    text-align: left;
  }

  .hero::after {
    font-size: 46px;
    right: -20px;
    bottom: 0;
  }

  .content-section {
    padding: 28px 16px;
  }

  .content-card {
    border-radius: 18px;
  }

  .content-card br {
    display: none;
  }

  .three-winds {
    grid-template-columns: 1fr;
  }

  .closing {
    padding: 54px 18px 64px;
  }
}