/* ===== RESET ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --green:      #3a6b42;
  --green-dark: #2a5230;
  --green-pale: #eef4ef;
  --text:       #1c1c1c;
  --text-mid:   #555;
  --border:     #dedad4;
  --bg:         #ffffff;
  --bg-pale:    #f6f4f0;
  --hh:         64px;
  --serif:  'Noto Serif JP', serif;
  --sans:   'Noto Sans JP', sans-serif;
  --en:     'Montserrat', sans-serif;
  --radius: 4px;
  --shadow: 0 2px 16px rgba(0,0,0,.08);
  --transition: .3s ease;
}

html { scroll-behavior: smooth; }
body {
  font-family: var(--sans);
  color: var(--text);
  background: var(--bg);
  line-height: 1.8;
  font-size: 16px;
}

/* ===== HEADER ===== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--hh);
  background: var(--bg);
  border-bottom: 1px solid transparent;
  z-index: 100;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.site-header.scrolled {
  border-bottom-color: var(--border);
  box-shadow: var(--shadow);
}
.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  text-decoration: none;
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}
.logo-en {
  font-family: var(--en);
  font-weight: 700;
  font-size: 18px;
  color: var(--green);
  letter-spacing: .08em;
}
.logo-ja {
  font-size: 10px;
  color: var(--text-mid);
  letter-spacing: .05em;
}
.gnav-list {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}
.gnav-list a {
  text-decoration: none;
  font-size: 14px;
  color: var(--text);
  transition: color var(--transition);
}
.gnav-list a:hover { color: var(--green); }
.gnav-cta {
  background: var(--green);
  color: #fff !important;
  padding: 8px 20px;
  border-radius: var(--radius);
  transition: background var(--transition) !important;
}
.gnav-cta:hover { background: var(--green-dark) !important; }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  transition: var(--transition);
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== HERO ===== */
.hero {
  min-height: 100svh;
  background: var(--bg);
  display: flex;
  align-items: stretch;
  padding-top: var(--hh);
}
.hero-left {
  flex: 0 0 40%;
  max-width: 40%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 80px clamp(40px, 5vw, 88px);
}
.hero-right {
  flex: 0 0 60%;
  max-width: 60%;
  padding: 48px 48px 48px 0;
  display: flex;
}
.hero-brand {
  font-family: var(--en);
  font-size: clamp(15px, 1.4vw, 18px);
  font-weight: 600;
  letter-spacing: .28em;
  color: var(--green);
  margin-bottom: 40px;
}
.hero-catch {
  font-family: var(--serif);
  font-size: clamp(40px, 4.8vw, 68px);
  font-weight: 600;
  line-height: 1.45;
  color: var(--text);
  letter-spacing: .02em;
  margin-bottom: 40px;
}
.hero-body {
  font-size: clamp(15px, 1.15vw, 17px);
  color: var(--text-mid);
  line-height: 2.1;
  margin-bottom: 24px;
}
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 24px;
}
.hero-insta-note {
  margin-top: 20px;
  font-size: 13px;
  color: var(--text-mid);
}
.hero-insta-link {
  color: var(--text-mid);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color var(--transition);
}
.hero-insta-link:hover { color: var(--text); }
.hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius);
  display: block;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-block;
  padding: 14px 36px;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
  transition: var(--transition);
  cursor: pointer;
  border: 2px solid transparent;
}
.btn-primary {
  background: var(--green);
  color: #fff;
  border-color: var(--green);
}
.btn-primary:hover { background: var(--green-dark); border-color: var(--green-dark); }
.btn-outline {
  background: transparent;
  color: var(--green);
  border-color: var(--green);
}
.btn-outline:hover { background: var(--green); color: #fff; }
.btn-line {
  background: #06c755;
  color: #fff;
  border-color: #06c755;
}
.btn-line:hover { background: #05a847; border-color: #05a847; color: #fff; }
.btn-instagram {
  background: transparent;
  color: var(--text-mid);
  border-color: var(--border);
}
.btn-instagram:hover { background: var(--bg-pale); color: var(--text); }

/* ヘッダー電話番号 */
.gnav-tel {
  text-decoration: none;
  font-family: var(--en);
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: .04em;
  white-space: nowrap;
  transition: color var(--transition);
}
.gnav-tel:hover { color: var(--green); }

/* ヘッダーLINEボタン */
.gnav-line {
  text-decoration: none;
  font-size: 14px;
  font-weight: 700;
  color: #fff;
  background: #06c755;
  padding: 8px 16px;
  border-radius: var(--radius);
  transition: background var(--transition);
  white-space: nowrap;
}
.gnav-line:hover { background: #05a847; }

/* お問い合わせセクション CTAブロック */
.contact-cta-btns {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  align-items: center;
}
.contact-line-block {
  display: flex;
  align-items: center;
  gap: 24px;
  margin: 32px 0;
  padding: 28px 32px;
  background: #f0faf3;
  border: 1px solid #b8e6c8;
  border-radius: var(--radius);
  flex-wrap: wrap;
}
.btn-line-large {
  font-size: 16px;
  padding: 16px 40px;
  white-space: nowrap;
}
.contact-line-note {
  font-size: 15px;
  color: var(--text-mid);
  line-height: 1.9;
}

/* ===== SECTION BASE ===== */
.sec {
  padding: 100px 24px;
}
.sec-inner {
  max-width: 1100px;
  margin: 0 auto;
}
.sec-head {
  text-align: center;
  margin-bottom: 64px;
}
.sec-label {
  font-family: var(--en);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .25em;
  color: var(--green);
  text-transform: uppercase;
  margin-bottom: 12px;
}
.sec-title {
  font-family: var(--serif);
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 600;
  color: var(--text);
  margin-bottom: 16px;
}
.sec-desc {
  font-size: 15px;
  color: var(--text-mid);
}

/* ===== ABOUT ===== */
.about-sec { background: var(--bg); }
.about-lead {
  text-align: center;
  margin-bottom: 56px;
}
.lead-text {
  font-family: var(--serif);
  font-size: clamp(18px, 2.5vw, 24px);
  line-height: 1.9;
  color: var(--text);
}
.about-cols {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.about-card {
  background: var(--bg-pale);
  border-top: 3px solid var(--green);
  padding: 36px 28px;
  border-radius: var(--radius);
}
.about-card-num {
  font-family: var(--en);
  font-size: 28px;
  font-weight: 700;
  color: var(--green);
  opacity: .35;
  margin-bottom: 12px;
}
.about-card-title {
  font-family: var(--serif);
  font-size: 18px;
  margin-bottom: 12px;
  color: var(--text);
}
.about-card-img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  border-radius: var(--radius);
  display: block;
  margin-bottom: 16px;
}
.about-card-body { font-size: 14px; color: var(--text-mid); line-height: 1.8; }

/* ===== WORKS ===== */
.works-sec { background: var(--bg-pale); }
.works-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.works-card {
  background: var(--bg);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.works-img-placeholder {
  width: 100%;
  aspect-ratio: 4/3;
  background: var(--bg-pale);
  border: 2px dashed var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
}
.works-img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  display: block;
}
.works-img-placeholder span {
  font-size: 13px;
  color: var(--text-mid);
}
.works-info { padding: 20px 24px 28px; }
.works-tag {
  display: inline-block;
  font-size: 12px;
  color: var(--green);
  border: 1px solid var(--green);
  padding: 2px 10px;
  border-radius: 2px;
  margin-bottom: 10px;
}
.works-name {
  font-family: var(--serif);
  font-size: 17px;
  color: var(--text);
  margin-bottom: 6px;
}
.works-area { font-size: 13px; color: var(--text-mid); }

/* ===== SERVICE ===== */
.service-sec { background: var(--bg); }
.service-list { list-style: none; display: flex; flex-direction: column; gap: 0; }
.service-item {
  display: flex;
  align-items: flex-start;
  gap: 32px;
  padding: 36px 0;
  border-bottom: 1px solid var(--border);
}
.service-item:first-child { border-top: 1px solid var(--border); }
.service-num {
  font-family: var(--en);
  font-size: 36px;
  font-weight: 700;
  color: var(--green);
  opacity: .25;
  min-width: 64px;
  line-height: 1;
  padding-top: 4px;
}
.service-title {
  font-family: var(--serif);
  font-size: 22px;
  margin-bottom: 10px;
  color: var(--text);
}
.service-desc { font-size: 15px; color: var(--text-mid); line-height: 1.9; }

/* ===== STRENGTH ===== */
.strength-sec { background: var(--bg-pale); }
.strength-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}
.strength-card {
  background: var(--bg);
  padding: 40px 36px;
  border-radius: var(--radius);
  border-left: 4px solid var(--green);
}
.strength-num {
  font-family: var(--en);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .15em;
  color: var(--green);
  margin-bottom: 14px;
}
.strength-title {
  font-family: var(--serif);
  font-size: 20px;
  margin-bottom: 12px;
  color: var(--text);
}
.strength-body { font-size: 15px; color: var(--text-mid); line-height: 1.9; }

/* ===== MESSAGE ===== */
.message-sec { background: var(--bg); }
.message-layout {
  display: flex;
  align-items: flex-start;
  gap: 72px;
  max-width: 1000px;
  margin: 0 auto;
}
.message-text { flex: 1; }
.message-img-wrap {
  flex: 0 0 340px;
  width: 340px;
}
.message-img {
  width: 100%;
  height: 460px;
  object-fit: cover;
  object-position: center top;
  border-radius: var(--radius);
  display: block;
}
.message-body {
  font-family: var(--serif);
  font-size: 17px;
  line-height: 2.1;
  color: var(--text);
  margin-bottom: 28px;
}
.message-sign {
  font-size: 15px;
  color: var(--text-mid);
  margin-top: 48px;
  text-align: right;
}
.message-sign strong { color: var(--text); font-size: 17px; }

/* ===== COMPANY ===== */
.company-sec { background: var(--bg-pale); }
.company-table {
  width: 100%;
  max-width: 800px;
  margin: 0 auto;
  border-collapse: collapse;
}
.company-table th,
.company-table td {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
  font-size: 15px;
  text-align: left;
  vertical-align: top;
  line-height: 1.8;
}
.company-table th {
  width: 30%;
  color: var(--green-dark);
  font-weight: 700;
  white-space: nowrap;
}
.company-table td { color: var(--text); }

/* ===== CONTACT ===== */
.contact-sec { background: var(--bg); }
.contact-form { max-width: 680px; margin: 0 auto; }
.form-row { margin-bottom: 28px; }
.form-label {
  display: block;
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text);
}
.required {
  font-size: 11px;
  background: var(--green);
  color: #fff;
  padding: 1px 6px;
  border-radius: 2px;
  margin-left: 6px;
  vertical-align: middle;
}
.form-input {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-family: var(--sans);
  font-size: 15px;
  color: var(--text);
  background: var(--bg);
  transition: border-color var(--transition);
  appearance: none;
}
.form-input:focus {
  outline: none;
  border-color: var(--green);
}
.form-textarea { min-height: 160px; resize: vertical; }
.form-error {
  font-size: 13px;
  color: #c0392b;
  margin-top: 6px;
  min-height: 18px;
}
.form-submit { text-align: center; margin-top: 40px; }
.btn-submit { min-width: 200px; }

/* ===== FOOTER ===== */
.site-footer {
  background: var(--text);
  color: rgba(255,255,255,.7);
  padding: 64px 24px 40px;
}
.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  text-align: center;
}
.footer-logo {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  margin-bottom: 16px;
}
.footer-logo .logo-en {
  font-family: var(--en);
  font-size: 22px;
  font-weight: 700;
  color: #fff;
  letter-spacing: .08em;
}
.footer-logo .logo-ja {
  font-size: 11px;
  color: rgba(255,255,255,.5);
}
.footer-catch {
  font-family: var(--serif);
  font-size: 15px;
  color: rgba(255,255,255,.6);
  margin-bottom: 40px;
}
.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  justify-content: center;
  margin-bottom: 48px;
}
.footer-nav a {
  font-size: 13px;
  color: rgba(255,255,255,.6);
  text-decoration: none;
  transition: color var(--transition);
}
.footer-nav a:hover { color: #fff; }
.footer-copy { font-size: 12px; color: rgba(255,255,255,.35); }

/* ===== SCROLL REVEAL ===== */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .6s ease, transform .6s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
  .about-cols { grid-template-columns: repeat(2, 1fr); }
  .works-grid { grid-template-columns: repeat(2, 1fr); }
  .strength-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  :root { --hh: 56px; }
  .gnav {
    position: fixed;
    top: var(--hh);
    left: 0; right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    padding: 24px;
    transform: translateY(-110%);
    transition: transform var(--transition);
    box-shadow: var(--shadow);
  }
  .gnav.open { transform: translateY(0); }
  .gnav-list {
    flex-direction: column;
    gap: 16px;
    align-items: flex-start;
  }
  .gnav-list a { font-size: 16px; }
  .hamburger { display: flex; }

  .sec { padding: 72px 20px; }
  .about-cols { grid-template-columns: 1fr; }
  .works-grid { grid-template-columns: 1fr; }
  .service-item { gap: 20px; }
  .service-num { font-size: 28px; min-width: 48px; }
  .message-layout { flex-direction: column; gap: 40px; }
  .message-img-wrap { width: 100%; }
  .message-img { height: 360px; }

  .hero {
    flex-direction: column;
    min-height: auto;
  }
  .hero-left,
  .hero-right {
    flex: 1 1 auto;
    max-width: 100%;
  }
  .hero-left {
    padding: 56px 24px 40px;
  }
  .hero-right {
    padding: 0 24px 56px;
    min-height: 320px;
  }
  .hero-catch { font-size: clamp(34px, 9vw, 48px); }
  .hero-actions { flex-direction: column; align-items: stretch; }
  /* スマホ：LINEボタンを先頭・目立たせる */
  .hero-actions .btn-line { order: -1; font-size: 17px; padding: 16px; }
  .contact-line-block { flex-direction: column; align-items: stretch; text-align: center; }
  .contact-cta-btns { flex-direction: column; }
  .contact-cta-btns .btn { text-align: center; }
  .btn-line-large { font-size: 17px; }
  .gnav-tel { display: none; }
  .gnav-line { font-size: 15px; padding: 10px 18px; }
}

@media (max-width: 480px) {
  .hero-actions { flex-direction: column; align-items: stretch; text-align: center; }
  .company-table th { width: 40%; }
  .footer-nav { gap: 10px 16px; }
}