/* ============================================================
   2. DESIGN TOKENS
   ============================================================ */
:root{
  /* ------------------------------------------------------------
     ブランドカラー（assets/img/logo.svg から抽出）
       #5C8361  セージグリーン（シンボル）
       #424844  チャコール（ロゴタイプ）
       #BDCFB9  ペールセージ（下線）
     ------------------------------------------------------------ */
  --brand:        #5C8361;   /* ロゴ原色。塗り・装飾用 */
  --brand-strong: #4A6B4F;   /* テキスト／ボタン用（白地でコントラスト確保） */
  --brand-deep:   #3B5540;   /* ホバー */
  --brand-tint:   #E7EEE5;   /* アイコンタイル・eyebrow 背景 */
  --pale:         #BDCFB9;   /* ロゴのペールセージ */
  --pale-light:   #8FB694;   /* ダーク背景上のアクセント */

  /* ダーク面（ヘッダー・フッター・帯） */
  --dark:         #2A302C;
  --dark-deep:    #1F2421;
  --dark-soft:    #3B433D;

  /* テキストと面 */
  --ink:          #2C322E;
  --muted:        #5E6A61;
  --muted-2:      #68746B;
  --soft:         #F2F5F0;   /* section--soft の背景 */
  --line:         #E3E9DF;
  --white:        #FFFFFF;

  /* 状態色 */
  --ok:           #3F6344;
  --ok-bg:        #E7EEE5;
  --err:          #B4453F;
  --err-bg:       #FBF0EF;

  --radius:     18px;
  --radius-sm:  12px;
  --shadow-sm:  0 2px 10px rgba(42,48,44,.06);
  --shadow:     0 8px 30px rgba(42,48,44,.09);
  --shadow-lg:  0 24px 60px rgba(42,48,44,.16);

  --font:       "Poppins","Noto Sans JP",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --maxw:       1200px;
  --maxw-wide:  1360px;   /* ヘッダーと強みセクション用 */
  --gutter:     clamp(20px, 5vw, 48px);
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; scroll-padding-top:102px; -webkit-text-size-adjust:100%; }
body{
  margin:0; background:var(--white); color:var(--ink);
  font-family:var(--font); font-size:16px; line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{ max-width:100%; display:block; }
[hidden]{ display:none !important; }
a{ color:var(--brand-strong); text-decoration:none; }
h1,h2,h3,h4{ margin:0; font-weight:600; letter-spacing:-.02em; line-height:1.2; }
p{ margin:0; }
ul{ margin:0; padding:0; list-style:none; }

.wrap{ width:100%; max-width:var(--maxw); margin-inline:auto; padding-inline:var(--gutter); }
.wrap--wide{ max-width:var(--maxw-wide); }
.accent{ color:var(--brand-strong); }

/* ---- Buttons ---- */
.btn{
  display:inline-flex; align-items:center; gap:.5em;
  font:inherit; font-weight:600; font-size:15px; line-height:1;
  padding:15px 30px; border-radius:999px; border:1.5px solid transparent;
  cursor:pointer; transition:transform .18s ease, box-shadow .18s ease, background .18s ease, color .18s ease;
  white-space:nowrap;
}
.btn:hover{ transform:translateY(-2px); }
.btn-dark{ background:var(--dark); color:#fff; box-shadow:0 8px 22px rgba(42,48,44,.22); }
.btn-dark:hover{ background:var(--dark-soft); }
.btn-brand{ background:var(--brand-strong); color:#fff; box-shadow:0 8px 22px rgba(74,107,79,.28); }
.btn-brand:hover{ background:var(--brand-deep); }
.btn-ghost{ background:#fff; color:var(--brand-strong); border-color:#C6D6C3; }
.btn-ghost:hover{ border-color:var(--brand-strong); box-shadow:0 8px 22px rgba(74,107,79,.16); }
.btn-outline-light{ background:transparent; color:#fff; border-color:rgba(255,255,255,.45); }
.btn-outline-light:hover{ background:#fff; color:var(--dark); }

/* ============================================================
   3. HEADER
   ============================================================ */
/* ヘッダーは2状態
   ・ページ最上部  … 背景透明／原色ロゴ／濃色の文字
   ・スクロール後  … .is-solid が付き、濃色背景／白ロゴ／白文字に反転
   モバイルメニューを開いている間も .is-solid と同じ見た目にする      */
.site-header{
  position:sticky; top:0; z-index:100;
  background:transparent;
  padding-top:env(safe-area-inset-top, 0px);
  transition:background .3s ease, box-shadow .3s ease;
}
.site-header.is-solid,
.nav-open .site-header{
  background:var(--dark);
  box-shadow:0 6px 24px rgba(42,48,44,.16);
}
.site-header__inner{
  display:flex; align-items:center; gap:28px;
  height:86px;
}

/* ---- ロゴ（原色版と白版を重ねずに切り替え） ---- */
.brand{ display:inline-flex; align-items:center; flex-shrink:0; line-height:0; }
.brand__logo{ width:auto; height:42px; display:block; }
.site-header .brand__logo--white{ display:none; }
.site-header.is-solid .brand__logo--color,
.nav-open .site-header .brand__logo--color{ display:none; }
.site-header.is-solid .brand__logo--white,
.nav-open .site-header .brand__logo--white{ display:block; }
@media (max-width:480px){ .brand__logo{ height:34px; } }

/* ---- ナビゲーション ---- */
.nav{ display:flex; align-items:center; gap:30px; margin-left:16px; }
.nav a{
  color:rgba(44,50,46,.76); font-size:14.5px; font-weight:500; position:relative; padding:6px 0;
  transition:color .18s ease;
}
.nav a:hover,.nav a.is-active{ color:var(--brand-strong); }
.nav a.is-active::after{
  content:""; position:absolute; left:0; right:0; bottom:0; height:2px;
  background:var(--brand); border-radius:2px;
}
.site-header.is-solid .nav a,
.nav-open .nav a{ color:rgba(255,255,255,.82); }
.site-header.is-solid .nav a:hover,
.site-header.is-solid .nav a.is-active,
.nav-open .nav a:hover{ color:#fff; }
.site-header.is-solid .nav a.is-active::after{ background:var(--pale); }

.header-menu{ display:contents; }
.header-actions{ margin-left:auto; display:flex; align-items:center; gap:12px; }
.header-actions .btn{ padding:11px 24px; font-size:14px; }

/* ---- ハンバーガー ---- */
.nav-toggle{
  display:none; margin-left:auto; width:44px; height:44px; border:0; background:transparent;
  cursor:pointer; align-items:center; justify-content:center; border-radius:10px;
}
.nav-toggle span{ display:block; width:22px; height:2px; background:var(--ink); border-radius:2px; position:relative; transition:.2s; }
.nav-toggle span::before,.nav-toggle span::after{
  content:""; position:absolute; left:0; width:22px; height:2px; background:var(--ink); border-radius:2px; transition:.2s;
}
.site-header.is-solid .nav-toggle span,
.site-header.is-solid .nav-toggle span::before,
.site-header.is-solid .nav-toggle span::after,
.nav-open .nav-toggle span::before,
.nav-open .nav-toggle span::after{ background:#fff; }
.nav-toggle span::before{ top:-7px; } .nav-toggle span::after{ top:7px; }
.nav-open .nav-toggle span{ background:transparent; }
.nav-open .nav-toggle span::before{ top:0; transform:rotate(45deg); }
.nav-open .nav-toggle span::after{ top:0; transform:rotate(-45deg); }

@media (max-width:920px){
  .nav-toggle{ display:flex; }
  .header-menu{
    display:block; position:absolute; left:0; right:0; top:100%;
    background:var(--dark); box-shadow:0 20px 34px rgba(0,0,0,.26);
    max-height:0; overflow:hidden; transition:max-height .3s ease;
  }
  .nav-open .header-menu{ max-height:440px; }
  .nav{
    flex-direction:column; align-items:stretch; gap:0;
    margin:0; padding:4px var(--gutter) 0;
  }
  .nav a{ padding:16px 0; border-bottom:1px solid rgba(255,255,255,.09); font-size:16px; }
  .nav a:last-child{ border-bottom:0; }
  .nav a.is-active::after{ display:none; }
  .nav-open .nav a.is-active{ color:var(--pale); }
  .header-actions{ margin:0; padding:14px var(--gutter) 24px; }
  .header-actions .btn{ width:100%; justify-content:center; padding:14px 24px; }
}

@media (prefers-reduced-motion:reduce){ .site-header{ transition:none; } }

/* ============================================================
   4. HERO
   ============================================================ */
.hero{ position:relative; overflow:hidden; background:#fff; }
.hero__inner{
  position:relative; z-index:2;
  display:grid; grid-template-columns:minmax(0,1fr) minmax(0,.92fr); gap:40px; align-items:center;
  padding-block:clamp(56px, 8vw, 104px) clamp(64px, 9vw, 120px);
}
.eyebrow{
  display:inline-flex; align-items:center; gap:8px;
  font-size:13px; font-weight:600; letter-spacing:.06em; text-transform:uppercase;
  color:var(--brand-strong); background:var(--brand-tint);
  padding:8px 16px; border-radius:999px; margin-bottom:22px;
}
.eyebrow svg{ width:14px; height:14px; }
.hero h1{
  font-size:clamp(34px, 5.2vw, 58px); font-weight:700; letter-spacing:-.03em; line-height:1.12;
  margin-bottom:22px;
}
.hero h1 .accent{ display:block; }
.hero__lead{ font-size:clamp(15px,1.45vw,17px); color:var(--muted); max-width:30em; margin-bottom:34px; }
.hero__cta{ display:flex; flex-wrap:wrap; gap:14px; }

/* --- arc artwork --- */
.hero__art{ position:relative; min-height:420px; }
.hero__arc{
  position:absolute; top:50%; left:4%; width:min(780px, 118%); aspect-ratio:1;
  transform:translateY(-50%); border-radius:50%;
  background:
    radial-gradient(circle at 30% 25%, rgba(189,207,185,.5), transparent 55%),
    linear-gradient(140deg, #7FA684 0%, #4E7053 45%, #2A302C 100%);
  box-shadow:0 40px 90px rgba(42,48,44,.3);
  overflow:hidden;
}
.hero__arc svg{ position:absolute; inset:0; width:100%; height:100%; opacity:.5; }
.hero__sweep{
  position:absolute; top:-18%; right:-6%; width:min(760px,96%); aspect-ratio:1; border-radius:50%;
  background:linear-gradient(135deg, rgba(92,131,97,.16), rgba(242,245,240,0) 62%);
  z-index:1; pointer-events:none;
}
.floatcards{ position:absolute; inset:0; z-index:3; }
.floatcard{
  position:absolute; display:flex; align-items:center; gap:12px;
  background:rgba(255,255,255,.92); backdrop-filter:blur(10px);
  border:1px solid rgba(255,255,255,.7);
  border-radius:16px; padding:14px 20px 14px 16px; box-shadow:var(--shadow-lg);
  animation:float 6s ease-in-out infinite;
}
.floatcard:nth-child(2){ animation-delay:-2s; }
.floatcard:nth-child(3){ animation-delay:-4s; }
@keyframes float{ 0%,100%{ transform:translateY(0);} 50%{ transform:translateY(-9px);} }
@media (prefers-reduced-motion:reduce){ .floatcard{ animation:none; } .btn:hover{ transform:none; } }
.floatcard__icon{
  width:38px; height:38px; border-radius:11px; display:grid; place-items:center; flex-shrink:0;
}
.floatcard__icon svg{ width:19px; height:19px; }
.tone-sage{   background:#E7EEE5; color:var(--brand-strong); }
.tone-forest{ background:#DAE5DB; color:#35503B; }
.tone-stone{  background:#ECEBE4; color:#66675A; }
.floatcard__label{ font-size:12px; color:var(--muted-2); line-height:1.4; }
.floatcard__value{ font-size:17px; font-weight:700; color:var(--dark); letter-spacing:-.02em; line-height:1.3; }

.fc-1{ top:12%;  left:-14%; }
.fc-2{ top:44%;  right:2%;  }
.fc-3{ bottom:9%; left:-4%; }

@media (max-width:980px){
  .hero__inner{ grid-template-columns:1fr; gap:56px; }
  .hero__art{ min-height:340px; }
  .hero__arc{ left:50%; transform:translate(-50%,-50%); width:min(560px,92%); }
  .fc-1{ left:0; } .fc-3{ left:6%; } .fc-2{ right:0; }
}
@media (max-width:560px){
  .hero__art{ min-height:300px; }
  .floatcard{ padding:11px 16px 11px 12px; gap:9px; border-radius:14px; }
  .floatcard__value{ font-size:15px; }
  .fc-1{ left:0; top:6%; } .fc-2{ right:0; } .fc-3{ left:4%; bottom:4%; }
}

/* ============================================================
   5. PILLARS (dark band)
   ============================================================ */
.pillars{
  position:relative; overflow:hidden;
  background:var(--dark-deep);
  padding-block:clamp(60px,7vw,88px);
}
.pillars::before,.pillars::after{
  content:""; position:absolute; border-radius:50%; pointer-events:none;
}
.pillars::before{ width:520px; height:520px; left:-220px; top:-160px; background:radial-gradient(circle, rgba(92,131,97,.4), transparent 68%); }
.pillars::after{ width:620px; height:620px; right:-260px; bottom:-280px; background:radial-gradient(circle, rgba(189,207,185,.22), transparent 68%); }
.pillars .wrap{ position:relative; z-index:2; }
.pillars h2{
  color:#fff; font-size:clamp(23px,2.7vw,32px); font-weight:600; text-align:center;
  max-width:19em; margin-inline:auto; margin-bottom:44px;
}
.pillar-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:22px; }
.pillar{
  background:linear-gradient(165deg, rgba(74,107,79,.5), rgba(45,58,48,.55));
  border:1px solid rgba(255,255,255,.12);
  border-radius:var(--radius); padding:32px 28px;
  transition:transform .22s ease, border-color .22s ease;
}
.pillar:hover{ transform:translateY(-4px); border-color:rgba(255,255,255,.28); }
.pillar__icon{
  width:50px; height:50px; border-radius:14px; display:grid; place-items:center; margin-bottom:20px;
  background:rgba(255,255,255,.12); color:var(--pale);
}
.pillar__icon svg{ width:24px; height:24px; }
.pillar h3{ color:#fff; font-size:19px; font-weight:600; margin-bottom:10px; }
.pillar p{ color:rgba(255,255,255,.72); font-size:14.5px; line-height:1.75; }
@media (max-width:860px){ .pillar-grid{ grid-template-columns:1fr; gap:16px; } }

/* ============================================================
   6. SECTION HEAD
   ============================================================ */
.section{ padding-block:clamp(66px,8vw,110px); }
.section--soft{ background:var(--soft); }
.section-head{ text-align:center; max-width:46em; margin-inline:auto; margin-bottom:clamp(38px,5vw,58px); }
.section-head h2{ font-size:clamp(28px,3.6vw,42px); font-weight:700; letter-spacing:-.03em; }
.section-head p{ color:var(--muted); margin-top:16px; font-size:16px; }

/* ============================================================
   7. SERVICES
   ============================================================ */
.service-grid{ display:grid; grid-template-columns:repeat(2,1fr); gap:24px; }
.service{
  background:#fff; border:1px solid var(--line); border-radius:var(--radius);
  padding:36px 32px; box-shadow:var(--shadow-sm);
  transition:transform .22s ease, box-shadow .22s ease, border-color .22s ease;
}
.service:hover{ transform:translateY(-4px); box-shadow:var(--shadow); border-color:#CFDDCB; }
.service__icon{
  width:52px; height:52px; border-radius:14px; display:grid; place-items:center;
  background:var(--brand-tint); color:var(--brand-strong); margin-bottom:22px;
}
.service__icon svg{ width:25px; height:25px; }
.service h3{ font-size:20px; font-weight:600; color:var(--dark); margin-bottom:18px; }
.service li{
  position:relative; padding-left:26px; margin-bottom:12px;
  font-size:14.5px; color:var(--muted); line-height:1.7;
}
.service li:last-child{ margin-bottom:0; }
.service li::before{
  content:""; position:absolute; left:2px; top:9px; width:7px; height:7px; border-radius:50%;
  background:var(--brand-strong); box-shadow:0 0 0 4px rgba(92,131,97,.15);
}
@media (max-width:860px){ .service-grid{ grid-template-columns:1fr; } .service{ padding:30px 24px; } }

/* ============================================================
   8. COMPANY OVERVIEW
   ============================================================ */
.company-card{
  background:#fff; border:1px solid var(--line); border-radius:var(--radius);
  box-shadow:var(--shadow); max-width:860px; margin-inline:auto;
  padding:clamp(18px,3vw,26px) clamp(20px,4vw,44px);
}
.company-row{
  display:grid; grid-template-columns:200px minmax(0,1fr); gap:18px;
  padding:22px 0; border-bottom:1px solid var(--line); align-items:baseline;
}
.company-row:last-child{ border-bottom:0; }
.company-row dt{ font-size:13.5px; font-weight:600; color:var(--brand-strong); letter-spacing:.02em; }
.company-row dd{ margin:0; font-size:15.5px; color:var(--ink); line-height:1.7; word-break:break-word; }
.company-row dd a{ color:var(--brand-strong); border-bottom:1px solid rgba(74,107,79,.3); }
.company-row dd a:hover{ border-bottom-color:var(--brand-strong); }
@media (max-width:640px){
  .company-row{ grid-template-columns:1fr; gap:4px; padding:18px 0; }
}

/* ============================================================
   9. CONTACT
   ============================================================ */
.contact-card{
  background:#fff; border:1px solid var(--line); border-radius:var(--radius);
  box-shadow:var(--shadow); max-width:760px; margin-inline:auto;
  padding:clamp(28px,4vw,48px);
}
.required-note{ text-align:center; color:var(--err); font-size:13.5px; font-weight:600; margin-top:6px; margin-bottom:30px; }
.field{ margin-bottom:20px; }
.field label{ display:block; font-size:13.5px; font-weight:600; color:var(--dark); margin-bottom:8px; }
.field input,.field textarea{
  width:100%; font:inherit; font-size:15px; color:var(--ink);
  padding:14px 18px; border:1.5px solid var(--line); border-radius:var(--radius-sm);
  background:#FAFBF9; transition:border-color .18s ease, box-shadow .18s ease, background .18s ease;
}
.field textarea{ min-height:170px; resize:vertical; line-height:1.7; }
.field input::placeholder,.field textarea::placeholder{ color:#9AA69D; }
.field input:focus,.field textarea:focus{
  outline:none; background:#fff; border-color:var(--brand-strong); box-shadow:0 0 0 4px rgba(92,131,97,.16);
}
.field input:user-invalid,.field textarea:user-invalid{ border-color:#D2938F; }
/* ハニーポット：スクリーンリーダーにも読まれない位置に隠す */
.hp{ position:absolute; left:-9999px; width:1px; height:1px; overflow:hidden; }

.field.has-error input,.field.has-error textarea{
  border-color:#D2938F; background:var(--err-bg);
}
.field.has-error label{ color:var(--err); }
.contact-turnstile{ display:flex; justify-content:center; margin-top:24px; }
.contact-turnstile .cf-turnstile{ display:flex; justify-content:center; width:300px; max-width:100%; }
@media (max-width:360px){ .contact-card{ padding-inline:20px; } }
.form-actions{ text-align:center; margin-top:24px; }
.form-actions .btn{ padding:16px 46px; min-width:170px; justify-content:center; }
.form-actions .btn:disabled{ opacity:.6; cursor:progress; transform:none; }
.form-status{
  margin-top:20px; text-align:center; font-size:14.5px; font-weight:500;
  color:var(--ok); background:var(--ok-bg); border-radius:var(--radius-sm); padding:14px 18px;
}
.form-status.is-error{ color:var(--err); background:var(--err-bg); }
.contact-alt{ text-align:center; margin-top:26px; font-size:14.5px; color:var(--muted); }

/* ============================================================
   10. FOOTER
   ============================================================ */
.site-footer{
  background:var(--dark); color:rgba(255,255,255,.7);
  padding-top:clamp(52px,6vw,72px);
  padding-bottom:calc(28px + env(safe-area-inset-bottom, 0px));
}
.footer-top{
  display:grid; grid-template-columns:minmax(0,1.5fr) repeat(2,minmax(0,1fr)); gap:40px;
  padding-bottom:44px;
}
.footer-brand .brand{ margin-bottom:18px; }
.footer-brand .brand__logo{ height:52px; }
.footer-brand p{ font-size:14.5px; line-height:1.8; max-width:32em; margin-bottom:18px; }
.footer-address{ font-size:14px; line-height:1.9; font-style:normal; color:rgba(255,255,255,.62); }
.footer-address a{ color:rgba(255,255,255,.82); }
.footer-address a:hover{ color:#fff; }
.footer-col h4{ color:#fff; font-size:14px; font-weight:600; letter-spacing:.03em; margin-bottom:18px; }
.footer-col li{ margin-bottom:11px; }
.footer-col a{ color:rgba(255,255,255,.66); font-size:14px; transition:color .18s ease; }
.footer-col a:hover{ color:#fff; }
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12); padding-top:24px;
  display:flex; flex-wrap:wrap; gap:10px; justify-content:space-between; align-items:center;
  font-size:13px; color:rgba(255,255,255,.5);
}
.footer-bottom a{ color:rgba(255,255,255,.62); }
@media (max-width:860px){
  .footer-top{ grid-template-columns:1fr 1fr; gap:34px; }
  .footer-brand{ grid-column:1 / -1; }
}
@media (max-width:480px){ .footer-top{ grid-template-columns:1fr; } }

/* back to top */
.totop{
  position:fixed; right:20px; bottom:calc(20px + env(safe-area-inset-bottom,0px)); z-index:90;
  width:46px; height:46px; border-radius:50%; border:0; cursor:pointer;
  background:var(--brand-strong); color:#fff; display:grid; place-items:center;
  box-shadow:0 10px 26px rgba(74,107,79,.4);
  opacity:0; visibility:hidden; transform:translateY(10px); transition:.25s ease;
}
.totop.is-on{ opacity:1; visibility:visible; transform:none; }
.totop svg{ width:18px; height:18px; }

/* reveal on scroll */
.reveal{ opacity:0; transform:translateY(18px); transition:opacity .6s ease, transform .6s ease; }
.reveal.is-in{ opacity:1; transform:none; }
@media (prefers-reduced-motion:reduce){ .reveal{ opacity:1; transform:none; transition:none; } html{ scroll-behavior:auto; } }