/* ===========================
   トラバース — 提案サイト
   ダークグレー × 白 × 青（信頼・誠実）
   =========================== */

:root {
  --bg: #0f1419;
  --bg-soft: #f5f7fa;
  --bg-card: #ffffff;
  --text: #1a1d23;
  --text-soft: #5a6371;
  --text-light: #8b94a3;
  --line: #e5e9f0;
  --line-dark: #283042;
  --accent: #2a6cb8;
  --accent-deep: #1e528f;
  --accent-soft: #d4e4f4;
  --dark: #1a1d23;
  --dark-soft: #252a33;
  --warn-bg: #fff4dc;
  --warn-text: #8a6a1f;
  --shadow-sm: 0 2px 8px rgba(15, 20, 25, 0.06);
  --shadow-md: 0 12px 32px rgba(15, 20, 25, 0.1);
  --radius: 4px;
  --radius-lg: 8px;
  --font-jp: "Noto Sans JP", "ヒラギノ角ゴ ProN", "Hiragino Sans", sans-serif;
  --font-en: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--font-jp);
  color: var(--text);
  background: #fff;
  line-height: 1.85;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
}

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

.container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 28px;
}

/* ===========================
   提案バナー
   =========================== */
.proposal-banner {
  background: var(--warn-bg);
  color: var(--warn-text);
  text-align: center;
  font-size: 13px;
  padding: 10px 16px;
  border-bottom: 1px solid #f0e0b8;
  line-height: 1.6;
}

/* ===========================
   ヘッダー
   =========================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding-top: 18px;
  padding-bottom: 18px;
}

.logo {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.logo-jp-main {
  font-weight: 700;
  font-size: 21px;
  letter-spacing: 0.12em;
  color: var(--dark);
}

.logo-sub {
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--text-light);
  margin-top: 4px;
}

.site-nav {
  display: flex;
  gap: 28px;
  font-family: var(--font-en);
  font-size: 13px;
  letter-spacing: 0.1em;
  font-weight: 500;
}

.site-nav a {
  color: var(--text-soft);
  transition: color 0.2s;
  position: relative;
  padding: 4px 0;
}

.site-nav a:hover { color: var(--accent); }

.header-tel {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  line-height: 1.2;
  padding: 8px 16px;
  border: 1.5px solid var(--dark);
  color: var(--dark);
  transition: all 0.2s;
}

.header-tel:hover { background: var(--dark); color: #fff; }

.tel-label { font-size: 10px; letter-spacing: 0.15em; }
.tel-num {
  font-family: var(--font-en);
  font-weight: 600;
  font-size: 16px;
  letter-spacing: 0.02em;
}

/* ===========================
   ヒーロー
   =========================== */
.hero {
  position: relative;
  background: var(--dark);
  color: #fff;
  padding: 120px 0 0;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 50% at 80% 0%, rgba(42, 108, 184, 0.25), transparent 70%),
    radial-gradient(ellipse 60% 40% at 0% 100%, rgba(42, 108, 184, 0.15), transparent 70%);
  pointer-events: none;
}

.hero-inner { position: relative; padding-bottom: 80px; }

.hero-sub {
  font-family: var(--font-en);
  font-size: 12px;
  letter-spacing: 0.4em;
  color: #6f88b3;
  margin-bottom: 28px;
  font-weight: 500;
}

.hero-title {
  font-size: clamp(36px, 6vw, 62px);
  font-weight: 900;
  letter-spacing: 0.02em;
  line-height: 1.35;
  margin-bottom: 32px;
  color: #fff;
}

.hero-lead {
  font-size: 16px;
  color: #b8c4d6;
  line-height: 2;
  margin-bottom: 44px;
  max-width: 560px;
}

.hero-cta {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.hero-meta {
  position: relative;
  border-top: 1px solid rgba(255,255,255,0.1);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  max-width: 1120px;
  margin: 0 auto;
  padding: 32px 28px;
}

.hero-meta-item {
  display: flex;
  flex-direction: column;
  text-align: center;
  border-right: 1px solid rgba(255,255,255,0.08);
  padding: 8px 16px;
}

.hero-meta-item:last-child { border-right: none; }

.meta-num {
  font-family: var(--font-en);
  font-weight: 700;
  font-size: 36px;
  color: #fff;
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.meta-num small {
  font-size: 14px;
  font-weight: 500;
  color: #6f88b3;
  margin-left: 4px;
  letter-spacing: 0;
}

.meta-label {
  font-size: 11px;
  letter-spacing: 0.15em;
  color: #8b94a3;
  margin-top: 6px;
}

/* ===========================
   ボタン
   =========================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 28px;
  font-weight: 600;
  font-size: 14.5px;
  letter-spacing: 0.04em;
  transition: all 0.2s;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  border: 1.5px solid var(--accent);
}

.btn-primary:hover { background: var(--accent-deep); border-color: var(--accent-deep); transform: translateY(-1px); }

.btn-ghost {
  background: transparent;
  color: #fff;
  border: 1.5px solid rgba(255,255,255,0.3);
}

.btn-ghost:hover { background: rgba(255,255,255,0.08); border-color: rgba(255,255,255,0.6); }

.btn-arrow { font-family: var(--font-en); font-weight: 400; }
.btn-icon-phone { font-size: 16px; }

/* ===========================
   セクション共通
   =========================== */
section { padding: 96px 0; }

.section-label {
  font-family: var(--font-en);
  font-size: 11px;
  letter-spacing: 0.4em;
  color: var(--accent);
  text-transform: lowercase;
  margin-bottom: 14px;
  font-weight: 500;
}

.section-title {
  font-size: clamp(26px, 4vw, 38px);
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.5;
  margin-bottom: 24px;
  color: var(--dark);
}

.section-lead {
  color: var(--text-soft);
  margin-bottom: 48px;
  line-height: 1.9;
  max-width: 640px;
}

.note-small {
  font-size: 12px;
  color: var(--warn-text);
}

/* ===========================
   About
   =========================== */
.about { background: #fff; }

.about-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 56px;
  align-items: start;
}

.about-text .section-title { margin-bottom: 28px; }
.about-lead { font-size: 16px; color: var(--text); margin-bottom: 24px; font-weight: 500; }
.about-body { color: var(--text-soft); line-height: 2; }

.origin-card {
  margin-top: 36px;
  background: var(--bg-soft);
  border-left: 3px solid var(--accent);
  padding: 24px 26px;
}

.origin-label {
  font-family: var(--font-en);
  font-size: 11px;
  letter-spacing: 0.3em;
  color: var(--accent);
  margin-bottom: 8px;
  text-transform: lowercase;
  font-weight: 600;
}

.origin-title {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.04em;
  margin-bottom: 12px;
  color: var(--dark);
}

.origin-body {
  font-size: 14px;
  color: var(--text-soft);
  line-height: 2;
}

.origin-body strong {
  color: var(--accent-deep);
  font-weight: 700;
}

.badge-card {
  background: var(--dark);
  color: #fff;
  padding: 36px 32px;
  border-left: 3px solid var(--accent);
  position: sticky;
  top: 100px;
}

.badge-num {
  font-family: var(--font-en);
  font-size: 60px;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.03em;
  color: #fff;
}
.badge-num small { font-size: 18px; font-weight: 500; color: #6f88b3; margin-left: 6px; }

.badge-label {
  font-size: 13px;
  color: #b8c4d6;
  margin: 12px 0 24px;
  letter-spacing: 0.04em;
}

.badge-list { list-style: none; }
.badge-list li {
  padding: 8px 0 8px 20px;
  position: relative;
  font-size: 13px;
  color: #d8dee9;
  border-top: 1px solid rgba(255,255,255,0.08);
  line-height: 1.6;
}
.badge-list li::before {
  content: "▸";
  position: absolute;
  left: 0; top: 8px;
  color: var(--accent);
}

/* ===========================
   Service
   =========================== */
.service { background: var(--bg-soft); }

.service-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.service-card {
  background: #fff;
  padding: 36px 32px;
  position: relative;
  border-top: 3px solid var(--accent);
  transition: transform 0.2s, box-shadow 0.2s;
}

.service-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }

.service-num {
  font-family: var(--font-en);
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.1em;
  margin-bottom: 12px;
}

.service-title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 14px;
  color: var(--dark);
  letter-spacing: 0.02em;
}

.service-desc {
  color: var(--text-soft);
  font-size: 14px;
  line-height: 1.95;
  margin-bottom: 18px;
}

.service-list {
  list-style: none;
  border-top: 1px solid var(--line);
  padding-top: 14px;
}
.service-list li {
  position: relative;
  padding: 6px 0 6px 18px;
  font-size: 13px;
  color: var(--text);
}
.service-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 700;
}

/* ===========================
   Works
   =========================== */
.works { background: #fff; }

.works-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.work-card { transition: transform 0.2s; }
.work-card:hover { transform: translateY(-3px); }

.work-photo {
  aspect-ratio: 4 / 3;
  margin-bottom: 14px;
}

.photo-ph {
  background:
    repeating-linear-gradient(
      45deg,
      #eef2f7,
      #eef2f7 10px,
      #e2e8ef 10px,
      #e2e8ef 20px
    );
  border: 1.5px dashed var(--accent-soft);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: var(--accent-deep);
  position: relative;
}

.photo-ph-icon {
  font-size: 30px;
  opacity: 0.55;
}

.photo-ph-tag {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--accent-deep);
  background: rgba(255,255,255,0.6);
  padding: 2px 10px;
}

.work-cat {
  font-family: var(--font-en);
  font-size: 11px;
  letter-spacing: 0.15em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 4px;
  font-weight: 600;
}

.work-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--dark);
  line-height: 1.5;
}

/* ===========================
   Strengths
   =========================== */
.strengths { background: var(--bg-soft); }

.strength-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.strength-card {
  background: #fff;
  padding: 40px 32px;
  border-bottom: 3px solid var(--accent);
}

.strength-num {
  font-family: var(--font-en);
  font-size: 32px;
  font-weight: 800;
  color: var(--accent-soft);
  letter-spacing: -0.02em;
  line-height: 1;
  margin-bottom: 18px;
}

.strength-card h3 {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.02em;
  margin-bottom: 14px;
  color: var(--dark);
  line-height: 1.6;
}

.strength-card p {
  color: var(--text-soft);
  font-size: 14px;
  line-height: 1.95;
}

/* ===========================
   Profile
   =========================== */
.profile { background: #fff; }

.profile-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 48px;
  align-items: start;
}

.profile-photo {
  aspect-ratio: 4 / 5;
}

.profile-photo .photo-ph-icon { font-size: 50px; }

.profile-body .section-title { margin-bottom: 18px; }

.profile-name {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--dark);
  margin-bottom: 4px;
}
.profile-name-sub {
  font-size: 11px;
  color: var(--warn-text);
  margin-left: 8px;
  font-weight: 400;
}

.profile-role {
  font-size: 13px;
  color: var(--accent);
  letter-spacing: 0.04em;
  margin-bottom: 28px;
  font-weight: 500;
}

.profile-dl {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 10px 20px;
  padding: 22px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  margin-bottom: 28px;
}

.profile-dl dt {
  font-size: 12px;
  color: var(--text-light);
  letter-spacing: 0.08em;
  padding-top: 1px;
}

.profile-dl dd {
  font-size: 14px;
  color: var(--text);
  font-weight: 500;
}

.profile-msg {
  color: var(--text-soft);
  line-height: 2;
  font-size: 14.5px;
}

/* ===========================
   CTA
   =========================== */
.cta { background: var(--dark); color: #fff; }
.cta .section-title { color: #fff; }
.cta .section-lead { color: #b8c4d6; }

.cta-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-bottom: 56px;
}

.cta-card {
  background: var(--dark-soft);
  padding: 36px 32px;
  border-left: 3px solid var(--accent);
}

.cta-tag {
  font-family: var(--font-en);
  font-size: 11px;
  letter-spacing: 0.15em;
  color: var(--accent);
  margin-bottom: 14px;
  font-weight: 600;
}

.cta-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 14px;
  color: #fff;
  line-height: 1.6;
}

.cta-card p {
  color: #b8c4d6;
  font-size: 14px;
  line-height: 1.95;
  margin-bottom: 20px;
}

.cta-link {
  color: var(--accent);
  font-weight: 600;
  font-size: 14px;
  padding-bottom: 2px;
  border-bottom: 1px solid var(--accent);
}
.cta-link:hover { color: #fff; border-color: #fff; }

.contact-info {
  background: rgba(255,255,255,0.04);
  padding: 28px 32px;
  border-left: 3px solid rgba(255,255,255,0.15);
}

.contact-row {
  display: flex;
  gap: 20px;
  padding: 12px 0;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.contact-row:last-child { border-bottom: none; }

.contact-label {
  flex: 0 0 100px;
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 0.08em;
  padding-top: 2px;
}

.contact-value {
  flex: 1;
  font-size: 14.5px;
  color: #fff;
}

.contact-value a {
  color: #fff;
  border-bottom: 1px solid rgba(255,255,255,0.3);
}

/* ===========================
   Footer
   =========================== */
.site-footer {
  background: #0a0d12;
  color: #6f7886;
  padding: 48px 0 32px;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 32px;
  flex-wrap: wrap;
}

.footer-logo {
  font-weight: 800;
  font-size: 22px;
  letter-spacing: 0.16em;
  color: #fff;
}

.footer-sub {
  margin-top: 6px;
  font-size: 12px;
  color: #6f7886;
}

.footer-meta {
  text-align: right;
  font-size: 12px;
  color: #6f7886;
  line-height: 1.9;
}

/* ===========================
   レスポンシブ
   =========================== */
@media (max-width: 880px) {
  .header-inner {
    flex-wrap: wrap;
    gap: 12px;
    padding: 12px 0;
  }

  .site-nav {
    order: 3;
    width: 100%;
    justify-content: center;
    gap: 20px;
    padding-top: 4px;
  }

  .header-tel { padding: 6px 14px; }
  .tel-num { font-size: 14px; }

  .hero { padding-top: 64px; }
  .hero-inner { padding-bottom: 56px; }
  .hero-meta { grid-template-columns: 1fr; padding: 16px 28px; }
  .hero-meta-item { border-right: none; border-bottom: 1px solid rgba(255,255,255,0.08); padding: 16px 0; }
  .hero-meta-item:last-child { border-bottom: none; }
  .meta-num { font-size: 28px; }

  section { padding: 64px 0; }

  .about-grid { grid-template-columns: 1fr; gap: 32px; }
  .badge-card { position: static; }

  .service-grid { grid-template-columns: 1fr; gap: 16px; }
  .works-grid { grid-template-columns: 1fr 1fr; gap: 14px; }
  .strength-grid { grid-template-columns: 1fr; gap: 16px; }
  .profile-grid { grid-template-columns: 1fr; gap: 32px; }
  .cta-grid { grid-template-columns: 1fr; gap: 16px; }

  .contact-row { flex-direction: column; gap: 4px; }
  .contact-label { flex: none; }
}

@media (max-width: 480px) {
  .container { padding: 0 20px; }
  .logo-jp-main { font-size: 18px; }
  .header-tel .tel-label { display: none; }
  .btn { width: 100%; justify-content: center; }
  .hero-cta { flex-direction: column; }
  .works-grid { grid-template-columns: 1fr; }
  .profile-dl { grid-template-columns: 80px 1fr; gap: 8px 14px; }
}