/* =========================================================
   TOMOS Inc. — corporate site
   Palette : 藍紫 (indigo-violet) × 生成り (warm paper) × 琥珀 (amber)
   Method  : borders/shadows は最小限。余白とインデントで構造を示す。
   ========================================================= */

:root {
  --paper:       #F5F3EC;
  --paper-dim:   #ECE9DF;
  --ink:         #26243A;
  --indigo:      #28306F;
  --indigo-deep: #28306F;
  --amber:       #B3872F;
  --muted:       #6E6A80;

  --font-jp-serif: "Shippori Mincho", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --font-latin:    "Cormorant Garamond", Georgia, serif;
  --font-body:     "Zen Kaku Gothic New", "Hiragino Kaku Gothic ProN", "Noto Sans JP", sans-serif;

  --wrap: 1060px;
  --pad-x: clamp(1.25rem, 5vw, 2.5rem);
  --sec-y: clamp(4rem, 9vw, 7.5rem);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 2;
  letter-spacing: 0.02em;
  -webkit-font-smoothing: antialiased;
  font-feature-settings: "palt";
}

img { display: block; max-width: 100%; height: auto; }

a { color: var(--indigo); text-decoration: none; }
a:hover { color: var(--amber); }
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 3px;
  border-radius: 2px;
}

::selection { background: var(--indigo); color: var(--paper); }

.wrap {
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--pad-x);
}

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

.site-header { padding: 2rem 0 1.5rem; }

.site-header .wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.25rem 2.5rem;
}

.brand {
  display: block;
  flex: 0 0 auto;
  line-height: 0;
}
.brand-logo {
  width: clamp(9.25rem, 17vw, 11rem);
  height: auto;
}

.site-nav {
  margin-left: auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: clamp(1.1rem, 2.6vw, 2rem);
}

.site-nav a {
  font-size: 0.86rem;
  letter-spacing: 0.14em;
  color: var(--ink);
  white-space: nowrap;
  padding-block: 0.25rem;
}
.site-nav a:hover { color: var(--amber); }
.site-nav a[aria-current="page"] {
  color: var(--ink);
  font-weight: 700;
}

/* ---------- page hero ---------- */

.hero { padding: clamp(4.5rem, 11vw, 8.5rem) 0 var(--sec-y); }

.eyebrow {
  font-family: var(--font-latin);
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.42em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: 1.75rem;
}

.hero h1 {
  font-family: var(--font-jp-serif);
  font-weight: 600;
  font-size: clamp(1.9rem, 4.6vw, 3.2rem);
  line-height: 1.65;
  letter-spacing: 0.08em;
  color: var(--indigo-deep);
  max-width: 22em;
}

.hero .lead {
  margin-top: 2.5rem;
  max-width: 36em;
  color: var(--ink);
}

.hero .lead + .lead { margin-top: 1.25rem; }

@media (prefers-reduced-motion: no-preference) {
  .hero > * {
    animation: rise 0.9s cubic-bezier(0.22, 1, 0.36, 1) both;
  }
  .hero > *:nth-child(2) { animation-delay: 0.12s; }
  .hero > *:nth-child(3) { animation-delay: 0.24s; }
  @keyframes rise {
    from { opacity: 0; transform: translateY(14px); }
    to   { opacity: 1; transform: none; }
  }
}

/* ---------- sections ---------- */

.sec { padding-block: var(--sec-y); }
.sec.alt { background: var(--paper-dim); }
.sec.deep { background: var(--indigo-deep); color: var(--paper); }
.sec.deep a { color: var(--paper); }
.sec.deep a:hover { color: #D8AC4E; }

.sec-grid {
  display: grid;
  grid-template-columns: 6.5rem 1fr;
  column-gap: clamp(1.5rem, 4vw, 3.5rem);
}

/* 縦書きの章題 — この設計の「しるし」 */
.sec-label {
  writing-mode: vertical-rl;
  font-family: var(--font-jp-serif);
  font-weight: 600;
  font-size: 1.05rem;
  letter-spacing: 0.5em;
  color: var(--indigo);
  display: flex;
  align-items: flex-start;
}
.sec.deep .sec-label { color: #A9A3D6; }
.sec-label::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, #D8AC4E, var(--amber));
  margin-bottom: 1.1rem;
  align-self: center;
}

.sec-body { max-width: 44em; }

.sec-title {
  font-family: var(--font-jp-serif);
  font-weight: 600;
  font-size: clamp(1.45rem, 2.8vw, 2rem);
  line-height: 1.7;
  letter-spacing: 0.08em;
  color: var(--indigo-deep);
  margin-bottom: 2rem;
}
.sec.deep .sec-title { color: var(--paper); }

.sec-body p + p { margin-top: 1.25rem; }

/* インデントで階層を示すブロック */
.indent { padding-left: clamp(1.25rem, 3.5vw, 2.75rem); }
.indent-2 { padding-left: clamp(2.5rem, 7vw, 5.5rem); }

.note {
  font-size: 0.86rem;
  color: var(--muted);
  line-height: 1.9;
}
.sec.deep .note { color: #B9B4DE; }

/* ---------- 会社概要 dl ---------- */

.spec {
  display: grid;
  grid-template-columns: 8.5em 1fr;
  row-gap: 1.75rem;
  column-gap: 2rem;
}
.spec dt {
  font-weight: 500;
  letter-spacing: 0.12em;
  color: var(--muted);
}
.spec dd { color: var(--ink); }
.spec dd .sub { font-size: 0.86rem; color: var(--muted); }

/* ---------- 事業領域 ---------- */

.fields {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(17rem, 1fr));
  gap: 3rem 3.5rem;
  margin-top: 1rem;
}

.field .en {
  font-family: var(--font-latin);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: var(--amber);
}

.field h3 {
  font-family: var(--font-jp-serif);
  font-weight: 600;
  font-size: 1.2rem;
  letter-spacing: 0.1em;
  color: var(--indigo-deep);
  margin: 0.5rem 0 0.75rem;
}

.field p { font-size: 0.94rem; line-height: 2; }

/* services 詳細ページ用の大きめブロック */

.service-block { margin-top: 4.5rem; }
.service-block:first-of-type { margin-top: 0; }

.service-block h3 {
  font-family: var(--font-jp-serif);
  font-weight: 600;
  font-size: clamp(1.25rem, 2.2vw, 1.55rem);
  letter-spacing: 0.1em;
  color: var(--indigo-deep);
  margin: 0.4rem 0 1.25rem;
}

.service-block ul {
  list-style: none;
  margin-top: 1.25rem;
}
.service-block li {
  position: relative;
  padding-left: 1.4rem;
  font-size: 0.94rem;
  margin-top: 0.4rem;
}
.service-block li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.85em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--indigo);
  opacity: 0.55;
}

/* ---------- 進め方（順序のある工程のみ番号を使う） ---------- */

.steps { list-style: none; counter-reset: step; }
.steps li {
  counter-increment: step;
  display: grid;
  grid-template-columns: 3.5rem 1fr;
  column-gap: 1.5rem;
  padding-block: 1.5rem;
}
.steps li::before {
  content: "0" counter(step);
  font-family: var(--font-latin);
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--amber);
  line-height: 1.4;
}
.steps h3 {
  font-family: var(--font-jp-serif);
  font-weight: 600;
  font-size: 1.1rem;
  letter-spacing: 0.1em;
  color: var(--indigo-deep);
  margin-bottom: 0.4rem;
}
.steps p { font-size: 0.94rem; }

/* ---------- 代表挨拶 ---------- */

.president-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: start;
}
.president-grid figure { margin-top: 0.5rem; }
.president-grid img { border-radius: 4px; }
.president-grid figcaption {
  margin-top: 0.9rem;
  font-size: 0.85rem;
  color: var(--muted);
  letter-spacing: 0.1em;
}

.signature {
  margin-top: 2.75rem;
  font-family: var(--font-jp-serif);
  letter-spacing: 0.14em;
}
.signature .role { font-size: 0.85rem; color: var(--muted); display: block; }
.signature .name { font-size: 1.3rem; color: var(--indigo-deep); }

/* トップのティザー写真 */
.teaser-grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}
.teaser-grid img { border-radius: 4px; }

/* ---------- CTA / ボタン ---------- */

.btn {
  display: inline-block;
  background: var(--indigo);
  color: var(--paper);
  font-size: 0.9rem;
  letter-spacing: 0.16em;
  padding: 0.9rem 2.4rem;
  border-radius: 999px;
  margin-top: 2rem;
  transition: background 0.25s ease;
}
.btn:hover { background: var(--indigo-deep); color: var(--paper); }
.sec.deep .btn { background: var(--paper); color: var(--indigo-deep); }
.sec.deep .btn:hover { background: #D8AC4E; color: var(--indigo-deep); }

.textlink {
  display: inline-block;
  margin-top: 1.5rem;
  font-size: 0.9rem;
  letter-spacing: 0.14em;
}
.textlink::after { content: "\2009\2192"; }

/* お問い合わせのメール表示 */
.contact-mail {
  font-family: var(--font-latin);
  font-size: clamp(1.3rem, 3.4vw, 2rem);
  font-weight: 500;
  letter-spacing: 0.06em;
  word-break: break-all;
}

/* ---------- プレーン記事（プライバシーポリシー等） ---------- */

.prose h2 {
  font-family: var(--font-jp-serif);
  font-weight: 600;
  font-size: 1.2rem;
  letter-spacing: 0.1em;
  color: var(--indigo-deep);
  margin: 3rem 0 0.9rem;
}
.prose h2:first-child { margin-top: 0; }
.prose p { font-size: 0.95rem; }
.prose p + p { margin-top: 0.9rem; }
.prose ul { margin: 0.9rem 0 0; list-style: none; }
.prose li {
  position: relative;
  padding-left: 1.4rem;
  font-size: 0.95rem;
  margin-top: 0.35rem;
}
.prose li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.85em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--indigo);
  opacity: 0.55;
}

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

.site-footer {
  background: var(--indigo-deep);
  color: var(--paper);
  padding: clamp(3.5rem, 7vw, 5.5rem) 0 2.5rem;
  margin-top: 0;
}
.footer-brand {
  display: inline-block;
  line-height: 0;
}
.footer-logo {
  width: clamp(10.5rem, 20vw, 12.5rem);
  height: auto;
  filter: brightness(0) invert(1);
  opacity: 0.96;
}
.site-footer address {
  font-style: normal;
  font-size: 0.88rem;
  color: #C9C5E6;
  margin-top: 1.25rem;
  line-height: 2;
}
.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1.1rem 2rem;
  margin-top: 2.5rem;
}
.footer-nav a {
  color: #C9C5E6;
  font-size: 0.84rem;
  letter-spacing: 0.14em;
}
.footer-nav a:hover { color: #D8AC4E; }
.copyright {
  margin-top: 3rem;
  font-family: var(--font-latin);
  font-size: 0.8rem;
  letter-spacing: 0.22em;
  color: #8F89BF;
}



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

@media (max-width: 880px) {
  .site-nav {
    flex: 0 0 100%;
    margin-left: 0;
    justify-content: flex-start;
  }
  .sec-grid { grid-template-columns: 1fr; row-gap: 1.5rem; }
  .sec-label {
    writing-mode: horizontal-tb;
    letter-spacing: 0.4em;
  }
  .sec-label::before {
    margin-bottom: 0;
    margin-right: 0.9rem;
    align-self: center;
  }
  .president-grid,
  .teaser-grid { grid-template-columns: 1fr; }
  .teaser-grid figure { max-width: 26rem; }
  .spec { grid-template-columns: 1fr; row-gap: 0.35rem; }
  .spec dt { margin-top: 1.4rem; font-size: 0.85rem; }
  .spec dt:first-of-type { margin-top: 0; }
}