/* 合同会社プライム東京 トップページ — 東京モダン
   白基調 × 藍 × 朱の差し色。明朝の見出しと余白で、静かな上質さと遊びを両立する。 */

* {
  box-sizing: border-box;
}

:root {
  --paper: #fdfdfa;
  --ink: #1c2333;
  --muted: #6b7280;
  --line: #e5e4de;
  --indigo: #1c2f54;
  --indigo-soft: #ecf0f7;
  --vermilion: #d9482b;
  --vermilion-soft: #fbeee9;
  --gold: #b7791f;
  --gold-soft: #faf3e3;
  --teal: #176b57;
  --teal-soft: #e8f3ef;
  --serif: "Hiragino Mincho ProN", "Yu Mincho", "YuMincho", serif;
  --sans: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  line-height: 1.9;
}

a {
  color: inherit;
  text-decoration: none;
}

h1, h2, h3, p {
  margin: 0;
}

.pc-only {
  display: none;
}

@media (min-width: 720px) {
  .pc-only {
    display: inline;
  }
}

/* ---------- ヘッダー ---------- */

.ht-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(253, 253, 250, 0.88);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}

.ht-nav {
  width: min(1080px, calc(100% - 40px));
  margin: 0 auto;
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.ht-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
}

.ht-brand-mark {
  width: 14px;
  height: 26px;
  border-radius: 4px;
  background: linear-gradient(180deg, var(--indigo) 55%, var(--vermilion) 55%);
}

.ht-brand-name {
  font-family: var(--serif);
  letter-spacing: 0.06em;
}

.ht-nav-links {
  display: flex;
  gap: 22px;
  font-size: 14px;
}

.ht-nav-links a {
  padding: 6px 2px;
  border-bottom: 2px solid transparent;
}

.ht-nav-links a:hover {
  border-bottom-color: var(--vermilion);
}

/* ---------- ヒーロー ---------- */

.ht-hero {
  position: relative;
  overflow: hidden;
  padding: 96px 20px 110px;
}

/* 青海波風の淡いパターン */
.ht-hero-pattern {
  position: absolute;
  inset: auto -60px -120px -60px;
  height: 260px;
  background-image: radial-gradient(circle at 50% 0, transparent 34px, rgba(28, 47, 84, 0.05) 35px, rgba(28, 47, 84, 0.05) 38px, transparent 39px);
  background-size: 90px 46px;
  background-position: 0 0, 45px 23px;
  pointer-events: none;
}

.ht-hero-vertical {
  position: absolute;
  top: 92px;
  right: max(18px, calc((100% - 1080px) / 2));
  writing-mode: vertical-rl;
  font-family: var(--serif);
  font-size: 14px;
  letter-spacing: 0.42em;
  color: var(--muted);
  border-right: 1px solid var(--line);
  padding-right: 14px;
  height: 240px;
}

.ht-hero-inner {
  width: min(1080px, 100%);
  margin: 0 auto;
}

.ht-eyebrow {
  font-size: 12px;
  letter-spacing: 0.34em;
  color: var(--vermilion);
  font-weight: 700;
  margin-bottom: 22px;
}

.ht-hero-title {
  font-family: var(--serif);
  font-size: clamp(40px, 7.2vw, 74px);
  line-height: 1.32;
  letter-spacing: 0.045em;
  font-weight: 600;
}

.ht-hero-copy {
  margin-top: 28px;
  font-size: 16px;
  color: var(--muted);
}

.ht-hero-actions {
  margin-top: 38px;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.ht-button {
  display: inline-block;
  padding: 13px 28px;
  border-radius: 999px;
  border: 1.5px solid var(--indigo);
  font-size: 14.5px;
  font-weight: 700;
  color: var(--indigo);
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.ht-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 22px rgba(28, 47, 84, 0.16);
}

.ht-button.primary {
  background: var(--indigo);
  color: #fff;
}

.ht-button.primary:hover {
  background: #24406f;
}

/* ---------- セクション共通 ---------- */

.ht-section {
  width: min(1080px, calc(100% - 40px));
  margin: 0 auto;
  padding: 72px 0;
}

.ht-section-head {
  display: flex;
  align-items: baseline;
  gap: 18px;
  flex-wrap: wrap;
  margin-bottom: 42px;
}

.ht-section-num {
  font-family: var(--serif);
  font-size: 15px;
  color: var(--vermilion);
  letter-spacing: 0.2em;
}

.ht-section-head h2 {
  font-family: var(--serif);
  font-size: clamp(26px, 4vw, 36px);
  letter-spacing: 0.08em;
}

.ht-section-head p {
  font-size: 14px;
  color: var(--muted);
}

/* ふわっと表示（JSが有効な環境でだけ適用。無効時は常に表示） */
html.js .reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

html.js .reveal.shown {
  opacity: 1;
  transform: none;
}

/* ---------- 作品棚 ---------- */

.ht-works {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 22px;
}

.ht-work {
  display: flex;
  gap: 18px;
  padding: 26px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 18px;
  position: relative;
  overflow: hidden;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.ht-work::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--vermilion);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}

.ht-work:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 40px rgba(28, 47, 84, 0.12);
}

.ht-work:hover::before {
  transform: scaleX(1);
}

.ht-work-icon {
  flex: 0 0 64px;
  width: 64px;
  height: 64px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  padding: 13px;
}

.ht-work-icon svg {
  width: 100%;
  height: 100%;
}

.icon-indigo { background: var(--indigo-soft); color: var(--indigo); }
.icon-vermilion { background: var(--vermilion-soft); color: var(--vermilion); }
.icon-gold { background: var(--gold-soft); color: var(--gold); }
.icon-teal { background: var(--teal-soft); color: var(--teal); }

.ht-work-body h3 {
  font-family: var(--serif);
  font-size: 21px;
  margin: 10px 0 8px;
  letter-spacing: 0.04em;
}

.ht-work-body p {
  font-size: 13.8px;
  color: var(--muted);
  line-height: 1.85;
}

.ht-status {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  border-radius: 999px;
  padding: 3px 12px;
}

.ht-status.now {
  background: var(--indigo);
  color: #fff;
}

.ht-status.soon {
  background: var(--indigo-soft);
  color: var(--indigo);
}

.ht-work-more {
  display: inline-block;
  margin-top: 12px;
  font-size: 13px;
  font-weight: 700;
  color: var(--vermilion);
}

/* ---------- いま、つくっているもの（開発中カード） ---------- */

.ht-dev {
  border-top: 1px solid var(--line);
}

.ht-dev-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 22px;
}

.ht-dev-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 18px;
  overflow: hidden;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.ht-dev-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 40px rgba(28, 47, 84, 0.12);
}

.ht-dev-banner {
  aspect-ratio: 16 / 9;
  display: grid;
  place-items: center;
  background: var(--indigo-soft);
  overflow: hidden;
}

.ht-dev-banner img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.ht-dev-banner svg {
  width: 64%;
  max-height: 80%;
}

.banner-oshi { background: var(--vermilion-soft); color: var(--vermilion); }
.banner-mamori { background: var(--indigo-soft); color: var(--indigo); }
.banner-hisseki { background: var(--gold-soft); color: var(--gold); }
.banner-gyomu { background: var(--teal-soft); color: var(--teal); }

.ht-dev-body {
  padding: 16px 20px 22px;
}

.ht-dev-body h3 {
  font-family: var(--serif);
  font-size: 19px;
  letter-spacing: 0.04em;
  margin: 10px 0 8px;
}

.ht-dev-body p {
  font-size: 13.5px;
  color: var(--muted);
  line-height: 1.85;
}

/* ---------- 考え方 ---------- */

.ht-policy {
  border-top: 1px solid var(--line);
}

.ht-principles {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 34px;
}

.ht-principle {
  padding-top: 6px;
}

.ht-principle-num {
  font-family: var(--serif);
  font-size: 34px;
  color: var(--vermilion);
  display: block;
  margin-bottom: 12px;
}

.ht-principle h3 {
  font-family: var(--serif);
  font-size: 19px;
  margin-bottom: 10px;
  letter-spacing: 0.05em;
}

.ht-principle p {
  font-size: 13.8px;
  color: var(--muted);
}

/* ---------- お知らせ ---------- */

.ht-news {
  padding-top: 0;
}

.ht-news-card {
  border: 1px solid var(--line);
  border-left: 4px solid var(--vermilion);
  border-radius: 14px;
  background: #fff;
  padding: 22px 26px;
  display: flex;
  gap: 18px;
  align-items: flex-start;
  flex-wrap: wrap;
}

.ht-news-card p {
  font-size: 14px;
  color: var(--muted);
  flex: 1;
  min-width: 240px;
}

.ht-news-card strong {
  color: var(--ink);
}

/* ---------- 会社案内 ---------- */

.ht-about {
  border-top: 1px solid var(--line);
}

.ht-about-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 40px;
  align-items: start;
}

.ht-about-table {
  margin: 0;
  border-top: 1px solid var(--line);
}

.ht-about-table > div {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 14px;
  padding: 14px 4px;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
}

.ht-about-table dt {
  color: var(--muted);
  font-weight: 700;
}

.ht-about-table dd {
  margin: 0;
}

.ht-about-note p {
  font-family: var(--serif);
  font-size: 16.5px;
  line-height: 2.2;
  margin-bottom: 22px;
}

@media (max-width: 720px) {
  .ht-about-grid {
    grid-template-columns: 1fr;
  }
}

/* ---------- フッター ---------- */

.ht-footer {
  border-top: 1px solid var(--line);
  background: var(--indigo);
  color: #eef1f7;
  padding: 46px 20px 26px;
}

.ht-footer-inner {
  width: min(1080px, 100%);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  gap: 28px;
  flex-wrap: wrap;
}

.ht-footer-brand {
  display: flex;
  gap: 12px;
  align-items: center;
}

.ht-footer-brand .ht-brand-mark {
  background: linear-gradient(180deg, #fff 55%, var(--vermilion) 55%);
}

.ht-footer-brand strong {
  font-family: var(--serif);
  letter-spacing: 0.06em;
}

.ht-footer-brand p {
  font-size: 12px;
  color: #aab6cf;
}

.ht-footer-links {
  display: flex;
  gap: 8px 20px;
  flex-wrap: wrap;
  font-size: 13px;
  align-items: center;
}

.ht-footer-links a:hover {
  color: #fff;
  text-decoration: underline;
}

.ht-copyright {
  width: min(1080px, 100%);
  margin: 26px auto 0;
  font-size: 12px;
  color: #aab6cf;
}

/* ---------- 製品ページ（yomihome等）用 ---------- */

.ht-page-hero {
  width: min(880px, calc(100% - 40px));
  margin: 0 auto;
  padding: 80px 0 30px;
}

.ht-page-hero h1 {
  font-family: var(--serif);
  font-size: clamp(32px, 5.4vw, 52px);
  letter-spacing: 0.05em;
  line-height: 1.4;
  margin: 18px 0;
}

.ht-page-hero .lead {
  color: var(--muted);
  font-size: 15.5px;
}

.ht-article {
  width: min(880px, calc(100% - 40px));
  margin: 0 auto;
  padding-bottom: 80px;
}

.ht-article h2 {
  font-family: var(--serif);
  font-size: 24px;
  letter-spacing: 0.06em;
  margin: 54px 0 16px;
  padding-left: 14px;
  border-left: 4px solid var(--vermilion);
}

.ht-article p {
  font-size: 14.5px;
  color: #444a58;
  margin: 12px 0;
}

.ht-article ul {
  padding-left: 22px;
  color: #444a58;
  font-size: 14.5px;
}

.ht-article li {
  margin: 8px 0;
}

.ht-callout {
  background: var(--indigo-soft);
  border-radius: 14px;
  padding: 18px 22px;
  margin: 22px 0;
  font-size: 14px;
}

.ht-callout.warn {
  background: var(--vermilion-soft);
}

@media (max-width: 720px) {
  .ht-hero {
    padding: 64px 20px 84px;
  }

  .ht-hero-vertical {
    display: none;
  }

  .ht-nav-links {
    gap: 14px;
    font-size: 13px;
  }
}