:root {
  --navy: #1b2f4b;
  --navy-dark: #12213a;
  --gold: #b8975a;
  --text: #2b2b2b;
  --muted: #666;
  --gray: #f5f6f8;
  --border: #e2e5ea;
  --header-h: 72px;
}

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

html { scroll-behavior: smooth; scroll-padding-top: var(--header-h); }

body {
  font-family: "Noto Sans JP", sans-serif;
  color: var(--text);
  line-height: 1.9;
  letter-spacing: 0.04em;
  background: #fff;
}

a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }

.container { width: min(1080px, 90%); margin: 0 auto; }

/* ---------- ヘッダー ---------- */
.header {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  height: var(--header-h);
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--border);
}
.header__inner { height: 100%; display: flex; align-items: center; justify-content: space-between; }

.logo { display: flex; flex-direction: column; line-height: 1.3; }
.logo__main { font-family: "Noto Serif JP", serif; font-weight: 700; font-size: 1.1rem; color: var(--navy); }
.logo__sub { font-size: 0.7rem; color: var(--gold); letter-spacing: 0.12em; }

.nav ul { display: flex; gap: 28px; align-items: center; }
.nav a { font-size: 0.9rem; transition: color 0.2s; }
.nav a:hover { color: var(--gold); }
.nav__cta { background: var(--navy); color: #fff !important; padding: 8px 18px; border-radius: 4px; }
.nav__cta:hover { background: var(--gold); }

.nav-toggle { display: none; background: none; border: 0; cursor: pointer; width: 32px; height: 24px; position: relative; }
.nav-toggle span { position: absolute; left: 0; width: 100%; height: 2px; background: var(--navy); transition: 0.3s; }
.nav-toggle span:nth-child(1) { top: 0; }
.nav-toggle span:nth-child(2) { top: 11px; }
.nav-toggle span:nth-child(3) { top: 22px; }
.nav-toggle.is-open span:nth-child(1) { top: 11px; transform: rotate(45deg); }
.nav-toggle.is-open span:nth-child(2) { opacity: 0; }
.nav-toggle.is-open span:nth-child(3) { top: 11px; transform: rotate(-45deg); }

/* ---------- ヒーロー ---------- */
.hero {
  min-height: 100vh;
  display: flex; align-items: center;
  padding-top: var(--header-h);
  color: #fff;
  background:
    linear-gradient(135deg, rgba(18, 33, 58, 0.92), rgba(27, 47, 75, 0.78)),
    repeating-linear-gradient(90deg, transparent 0 80px, rgba(255,255,255,0.03) 80px 81px);
}
.hero__en { color: var(--gold); letter-spacing: 0.2em; font-size: 0.85rem; margin-bottom: 16px; }
.hero__title { font-family: "Noto Serif JP", serif; font-size: clamp(1.9rem, 4.5vw, 3.2rem); line-height: 1.5; margin-bottom: 24px; }
.hero__lead { font-size: 1.05rem; opacity: 0.9; margin-bottom: 40px; }
.hero__actions { display: flex; gap: 16px; flex-wrap: wrap; }

/* ---------- ボタン ---------- */
.btn { display: inline-block; padding: 14px 32px; border-radius: 4px; font-weight: 500; transition: 0.2s; border: 1px solid transparent; cursor: pointer; font-size: 1rem; font-family: inherit; }
.btn--primary { background: var(--gold); color: #fff; }
.btn--primary:hover { background: #a3834a; }
.btn--ghost { border-color: rgba(255,255,255,0.7); color: #fff; }
.btn--ghost:hover { background: rgba(255,255,255,0.1); }
.btn--block { width: 100%; }

/* ---------- セクション共通 ---------- */
.section { padding: 100px 0; }
.section--gray { background: var(--gray); }
.section--navy { background: var(--navy); color: #fff; }

.section__title { font-family: "Noto Serif JP", serif; font-size: 1.8rem; text-align: center; color: var(--navy); margin-bottom: 56px; }
.section__title span { display: block; font-family: "Noto Sans JP", sans-serif; font-size: 0.8rem; color: var(--gold); letter-spacing: 0.25em; text-transform: uppercase; }
.section__title::after { content: ""; display: block; width: 40px; height: 2px; background: var(--gold); margin: 16px auto 0; }
.section__title--light { color: #fff; }

/* ---------- 事務所について ---------- */
.about { max-width: 760px; margin: 0 auto 56px; }
.about p + p { margin-top: 1em; }

.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.feature { padding: 32px 28px; border: 1px solid var(--border); border-top: 3px solid var(--navy); }
.feature__num { font-family: "Noto Serif JP", serif; color: var(--gold); font-size: 1.6rem; }
.feature h3 { color: var(--navy); margin: 8px 0 12px; font-size: 1.1rem; }
.feature p { font-size: 0.92rem; color: var(--muted); }

/* ---------- 業務内容 ---------- */
.services { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.services__category { text-align: center; font-family: "Noto Serif JP", serif; font-size: 1.2rem; color: var(--navy); margin-bottom: 32px; }
.service { background: #fff; padding: 36px 28px; border-radius: 4px; box-shadow: 0 2px 12px rgba(0,0,0,0.04); border-top: 3px solid var(--navy); }
.service__num { font-family: "Noto Serif JP", serif; color: var(--gold); font-size: 1.4rem; }
.service h3 { color: var(--navy); font-size: 1.05rem; padding-left: 14px; border-left: 3px solid var(--gold); line-height: 1.5; margin: 8px 0 14px; }
.service p { font-size: 0.92rem; color: var(--muted); }

/* ---------- 代表紹介 ---------- */
.profile { display: grid; grid-template-columns: 1fr 300px; gap: 56px; align-items: start; }
/* 写真の人物が左向きのため、PCでは写真を右側に配置して本文の方を向くようにしている */
.profile__photo { order: 2; position: relative; isolation: isolate; }
.profile__photo::before { content: ""; position: absolute; inset: 16px -16px -16px 16px; border: 1px solid var(--gold); z-index: -1; }
.profile__photo img { display: block; width: 100%; height: auto; aspect-ratio: 3 / 4; object-fit: cover; }
.profile__body { order: 1; }
.profile__role { color: var(--gold); font-size: 0.9rem; }
.profile__name { font-family: "Noto Serif JP", serif; font-size: 1.8rem; color: var(--navy); margin-bottom: 24px; }
.profile__name span { font-family: "Noto Sans JP", sans-serif; font-size: 0.85rem; color: var(--muted); margin-left: 16px; }
.profile__message { margin-bottom: 32px; }
.profile__career dt { font-weight: 700; color: var(--navy); border-bottom: 1px solid var(--border); padding-bottom: 4px; margin-bottom: 8px; }
.profile__career dd { margin-bottom: 24px; font-size: 0.92rem; }
.career-list li { display: grid; grid-template-columns: 4.5em 1fr; gap: 8px; padding: 6px 0; }
.career-list li span { color: var(--gold); font-weight: 500; }

/* ---------- 流れ ---------- */
.flow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.flow__step { background: #fff; padding: 32px 24px; text-align: center; position: relative; }
.flow__step:not(:last-child)::after { content: "▶"; position: absolute; right: -16px; top: 50%; transform: translateY(-50%); color: var(--gold); font-size: 0.8rem; }
.flow__no { display: inline-block; background: var(--navy); color: #fff; font-size: 0.75rem; padding: 2px 12px; border-radius: 20px; letter-spacing: 0.1em; }
.flow__step h3 { color: var(--navy); margin: 14px 0 10px; font-size: 1.05rem; }
.flow__step p { font-size: 0.88rem; color: var(--muted); text-align: left; }

/* ---------- 事務所概要 ---------- */
.office-table { width: 100%; max-width: 820px; margin: 0 auto; border-collapse: collapse; }
.office-table th, .office-table td { padding: 20px 24px; border-bottom: 1px solid var(--border); text-align: left; vertical-align: top; }
.office-table th { width: 30%; color: var(--navy); font-weight: 500; background: var(--gray); }

/* ---------- お問い合わせ ---------- */
.contact__lead { text-align: center; margin-bottom: 48px; opacity: 0.9; }
.contact { display: grid; grid-template-columns: 1fr 1.4fr; gap: 48px; align-items: start; }
.contact__tel { border: 1px solid rgba(255,255,255,0.25); padding: 40px 24px; text-align: center; }
.contact__tel-num { display: block; font-family: "Noto Serif JP", serif; font-size: 2rem; color: var(--gold); margin: 8px 0; }
.contact__mail { font-size: 1.15rem; word-break: break-all; }
.contact__mail:hover { text-decoration: underline; }
.office-table a { color: var(--navy); text-decoration: underline; }
.contact__tel-hours { font-size: 0.85rem; opacity: 0.8; }

.contact__form { display: flex; flex-direction: column; gap: 20px; }
.contact__form label { display: flex; flex-direction: column; gap: 6px; font-size: 0.92rem; }
.contact__form input, .contact__form textarea { padding: 12px 14px; border: 0; border-radius: 4px; font-family: inherit; font-size: 1rem; }
.req { display: inline-block; background: var(--gold); font-size: 0.7rem; padding: 0 8px; border-radius: 2px; margin-left: 8px; width: fit-content; }
.contact__form label:has(.req) { flex-direction: column; }
.contact__form button:disabled { opacity: 0.6; cursor: wait; }
.contact__privacy { font-size: 0.8rem; opacity: 0.8; }
.contact__status { font-size: 0.92rem; min-height: 1.5em; }
.contact__status.is-error { color: #f3b6b6; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; }

/* ---------- フッター ---------- */
.footer { background: var(--navy-dark); color: rgba(255,255,255,0.7); text-align: center; padding: 32px 0; font-size: 0.8rem; }
.footer__name { font-family: "Noto Serif JP", serif; color: #fff; font-size: 1rem; margin-bottom: 4px; }

/* ---------- レスポンシブ ---------- */
@media (max-width: 900px) {
  .nav-toggle { display: block; }
  .nav {
    position: fixed; top: var(--header-h); left: 0; right: 0;
    background: #fff; border-bottom: 1px solid var(--border);
    max-height: 0; overflow: hidden; transition: max-height 0.3s;
  }
  .nav.is-open { max-height: 480px; }
  .nav ul { flex-direction: column; gap: 0; padding: 12px 0 20px; }
  .nav li { width: 100%; text-align: center; }
  .nav a { display: block; padding: 12px; }
  .nav__cta { display: inline-block !important; margin-top: 8px; }

  .features, .services { grid-template-columns: 1fr; }
  .flow { grid-template-columns: 1fr 1fr; }
  .flow__step::after { display: none; }
  .profile { grid-template-columns: 1fr; gap: 32px; }
  .profile__photo { order: 0; max-width: 260px; margin: 0 auto; width: 100%; }
  .contact { grid-template-columns: 1fr; }
  .section { padding: 72px 0; }
}

@media (max-width: 520px) {
  .flow { grid-template-columns: 1fr; }
  .office-table th, .office-table td { display: block; width: 100%; }
  .office-table th { padding-bottom: 8px; }
  .office-table td { padding-top: 8px; }
  .logo__main { font-size: 0.95rem; }
}