/* ==========================================================================
   HOLM LAB VAULT — holm-labvault.com
   都市樹木管理・アーボリカルチャー計画・樹木保全コンサルティング
   ========================================================================== */

:root{
  --bg-primary:#F8F9F5;
  --bg-secondary:#EDF1EA;
  --text-primary:#26332B;
  --accent-main:#385B46;
  --accent-sub:#728875;
  --accent-natural:#9A8068;
  --accent-tech:#6F7973;
  --white:#FFFFFF;
  --border:#D8DED2;
  --shadow:0 4px 24px rgba(38,51,43,0.08);
  --radius:10px;
  --max-width:1180px;
  --ff:'Noto Sans JP',-apple-system,'Hiragino Kaku Gothic ProN','Hiragino Sans',sans-serif;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--ff);
  color:var(--text-primary);
  background:var(--bg-primary);
  line-height:1.8;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--accent-main);text-decoration:none;}
a:hover{text-decoration:underline;}
h1,h2,h3,h4{
  font-weight:700;
  line-height:1.45;
  margin:0 0 .6em;
  color:var(--text-primary);
}
h1{font-size:clamp(1.8rem,4vw,2.6rem);}
h2{font-size:clamp(1.5rem,3vw,2rem);}
h3{font-size:1.25rem;}
p{margin:0 0 1em;}
ul,ol{padding-left:1.3em;}
.container{max-width:var(--max-width);margin:0 auto;padding:0 24px;}
.section{padding:72px 0;}
.section-tight{padding:40px 0;}
.section-alt{background:var(--bg-secondary);}
.section-dark{background:var(--text-primary);color:#EAF0E7;}
.section-dark h2,.section-dark h3,.section-dark p{color:#EAF0E7;}
.eyebrow{
  text-transform:uppercase;
  letter-spacing:.12em;
  font-size:.75rem;
  color:var(--accent-sub);
  font-weight:700;
  margin-bottom:.8em;
  display:block;
}
.lead{font-size:1.1rem;color:var(--accent-tech);}
.center{text-align:center;}
.muted{color:var(--accent-tech);font-size:.92rem;}

/* ---- Buttons ---- */
.btn{
  display:inline-block;
  padding:13px 28px;
  border-radius:6px;
  font-weight:700;
  font-size:.95rem;
  border:2px solid transparent;
  cursor:pointer;
  transition:all .18s ease;
  text-align:center;
  white-space:nowrap;
}
.btn-primary{background:var(--accent-main);color:#fff;border-color:var(--accent-main);}
.btn-primary:hover{background:#2c4a39;text-decoration:none;}
.btn-outline{background:transparent;color:var(--accent-main);border-color:var(--accent-main);}
.btn-outline:hover{background:var(--accent-main);color:#fff;text-decoration:none;}
.btn-light{background:#fff;color:var(--accent-main);border-color:#fff;}
.btn-light:hover{background:transparent;color:#fff;text-decoration:none;}
.btn-block{display:block;width:100%;}
.btn-sm{padding:9px 18px;font-size:.85rem;}
.cta-row{display:flex;gap:16px;flex-wrap:wrap;margin-top:1.6em;}

/* ---- Header ---- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(248,249,245,.96);
  backdrop-filter:blur(6px);
  border-bottom:1px solid var(--border);
}
.header-inner{
  max-width:var(--max-width);margin:0 auto;padding:14px 24px;
  display:flex;align-items:center;gap:24px;
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand:hover{text-decoration:none;}
.logo-icon{display:block;flex-shrink:0;}
.brand-name{
  font-weight:900;letter-spacing:.04em;font-size:1.05rem;color:var(--text-primary);
  white-space:nowrap;
}
.main-nav{flex:1;overflow:hidden;}
.main-nav ul{
  display:flex;list-style:none;margin:0;padding:0;gap:4px;
  overflow-x:auto;scrollbar-width:none;
}
.main-nav ul::-webkit-scrollbar{display:none;}
.main-nav a{
  display:block;padding:10px 12px;font-size:.86rem;font-weight:500;
  color:var(--text-primary);white-space:nowrap;border-radius:6px;
}
.main-nav a:hover,.main-nav a.active{background:var(--bg-secondary);color:var(--accent-main);text-decoration:none;}
.header-cta{display:flex;gap:10px;flex-shrink:0;}
.nav-toggle{
  display:none;flex-direction:column;justify-content:center;gap:5px;
  width:40px;height:40px;border:1px solid var(--border);border-radius:6px;
  background:#fff;cursor:pointer;flex-shrink:0;
}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--text-primary);margin:0 auto;}

/* ---- Hero ---- */
.hero{position:relative;overflow:hidden;}
.hero-media{position:absolute;inset:0;z-index:0;}
.hero-media img{width:100%;height:100%;object-fit:cover;}
.hero-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(38,51,43,.82) 0%,rgba(38,51,43,.55) 45%,rgba(38,51,43,.25) 100%);
}
.hero-inner{position:relative;z-index:1;padding:110px 0 90px;max-width:720px;}
.hero .eyebrow{color:#C9D6C7;}
.hero h1{color:#fff;}
.hero .lead{color:#E6ECE2;font-size:1.15rem;}
.hero-figure{margin:0;}
.img-cap{font-size:.78rem;color:var(--accent-tech);margin-top:8px;}

/* ---- Breadcrumb ---- */
.breadcrumb{padding:16px 0 0;font-size:.82rem;color:var(--accent-tech);}
.breadcrumb a{color:var(--accent-tech);}

/* ---- Grid / Cards ---- */
.grid{display:grid;gap:28px;}
.grid-2{grid-template-columns:repeat(2,1fr);}
.grid-3{grid-template-columns:repeat(3,1fr);}
.grid-4{grid-template-columns:repeat(4,1fr);}
.card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);
  padding:28px;box-shadow:var(--shadow);
}
.card h3{margin-bottom:.5em;}
.card-img{border-radius:var(--radius) var(--radius) 0 0;overflow:hidden;aspect-ratio:4/3;}
.card-img img{width:100%;height:100%;object-fit:cover;}
.card-flat{background:var(--bg-secondary);border-radius:var(--radius);padding:26px;}
.icon-chip{
  width:46px;height:46px;border-radius:10px;background:var(--bg-secondary);
  display:flex;align-items:center;justify-content:center;margin-bottom:16px;
}
.icon-chip svg{width:24px;height:24px;}

/* ---- Content blocks with image ---- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
.split.reverse .split-media{order:2;}
.split-media img{border-radius:var(--radius);box-shadow:var(--shadow);}

/* ---- Topic detail block (purpose/applications/etc.) ---- */
.topic-block{
  border:1px solid var(--border);border-radius:var(--radius);
  padding:30px 32px;margin-bottom:24px;background:#fff;
}
.topic-block h3{color:var(--accent-main);border-bottom:2px solid var(--bg-secondary);padding-bottom:10px;margin-bottom:16px;}
.meta-table{width:100%;border-collapse:collapse;margin:1.2em 0;}
.meta-table th,.meta-table td{
  text-align:left;padding:12px 14px;border-bottom:1px solid var(--border);font-size:.92rem;vertical-align:top;
}
.meta-table th{width:30%;background:var(--bg-secondary);font-weight:600;color:var(--accent-main);}
.dl-grid{display:grid;grid-template-columns:200px 1fr;gap:4px 18px;margin:1em 0;}
.dl-grid dt{font-weight:700;color:var(--accent-main);}
.dl-grid dd{margin:0 0 .9em;}

/* ---- Numbered process steps ---- */
.steps{display:flex;flex-direction:column;gap:0;}
.step{display:flex;gap:24px;padding:28px 0;border-bottom:1px solid var(--border);}
.step:last-child{border-bottom:none;}
.step-num{
  flex-shrink:0;width:56px;height:56px;border-radius:50%;background:var(--accent-main);
  color:#fff;font-weight:900;font-size:1.1rem;display:flex;align-items:center;justify-content:center;
}
.step-body h3{margin-bottom:.3em;}

/* ---- Notice / limitation boxes ---- */
.notice{
  border-left:4px solid var(--accent-natural);background:var(--bg-secondary);
  padding:18px 22px;border-radius:0 8px 8px 0;margin:1.4em 0;font-size:.93rem;
}
.notice strong{color:var(--accent-main);}
.notice-title{font-weight:700;color:var(--accent-main);display:block;margin-bottom:.4em;}

/* ---- Tables (tree inventory etc.) ---- */
.table-wrap{overflow-x:auto;margin:1.4em 0;}
table.inventory{width:100%;border-collapse:collapse;min-width:640px;font-size:.88rem;}
table.inventory th,table.inventory td{border:1px solid var(--border);padding:10px 12px;text-align:left;}
table.inventory th{background:var(--accent-main);color:#fff;font-weight:600;}
table.inventory tr:nth-child(even){background:var(--bg-secondary);}

/* ---- Tag / pill / category ---- */
.tag{
  display:inline-block;background:var(--bg-secondary);color:var(--accent-main);
  padding:5px 13px;border-radius:20px;font-size:.78rem;font-weight:600;margin:0 6px 6px 0;
}
.tag-outline{display:inline-block;border:1px solid var(--accent-sub);color:var(--accent-sub);padding:4px 12px;border-radius:20px;font-size:.76rem;margin:0 6px 6px 0;}

/* ---- Insight / article cards ---- */
.article-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column;}
.article-card .card-img{aspect-ratio:16/10;}
.article-card-body{padding:22px 22px 24px;flex:1;display:flex;flex-direction:column;}
.article-card-body h3{font-size:1.08rem;}
.article-card-body .muted{flex:1;}
.filter-bar{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:36px;}
.filter-btn{
  border:1px solid var(--border);background:#fff;color:var(--text-primary);
  padding:8px 16px;border-radius:20px;font-size:.84rem;cursor:pointer;font-family:var(--ff);
}
.filter-btn.active,.filter-btn:hover{background:var(--accent-main);color:#fff;border-color:var(--accent-main);}

/* ---- Article page ---- */
.article-hero{padding:48px 0 20px;}
.article-hero .tag{margin-bottom:12px;}
.article-body{max-width:760px;margin:0 auto;}
.article-body h2{margin-top:2em;}
.article-body figure{margin:2em 0;}
.article-body figure img{border-radius:var(--radius);}
.article-body figcaption{font-size:.82rem;color:var(--accent-tech);margin-top:8px;text-align:center;}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}

/* ---- Forms ---- */
.form-wrap{max-width:760px;margin:0 auto;background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:40px;box-shadow:var(--shadow);}
.form-row{margin-bottom:20px;}
.form-row label{display:block;font-weight:600;margin-bottom:6px;font-size:.92rem;}
.form-row .req{color:#A14444;font-size:.78rem;margin-left:4px;}
.form-row input,.form-row select,.form-row textarea{
  width:100%;padding:12px 14px;border:1px solid var(--border);border-radius:6px;
  font-family:var(--ff);font-size:.95rem;background:#fff;color:var(--text-primary);
}
.form-row input:focus,.form-row select:focus,.form-row textarea:focus{outline:2px solid var(--accent-sub);border-color:var(--accent-main);}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
.form-note{font-size:.82rem;color:var(--accent-tech);margin-top:4px;}
.checkbox-row{display:flex;align-items:flex-start;gap:10px;}
.checkbox-row input{width:auto;margin-top:4px;}
.form-msg{padding:14px 18px;border-radius:8px;margin-bottom:20px;font-size:.92rem;display:none;}
.form-msg.show{display:block;}
.form-msg.success{background:#E3EEE2;color:#2c4a39;border:1px solid var(--accent-main);}
.form-msg.error{background:#F4E4E0;color:#8a3a2a;border:1px solid #c0634a;}
.hp-field{position:absolute;left:-9999px;opacity:0;}

/* ---- FAQ / limitation list ---- */
.limit-list{list-style:none;padding:0;}
.limit-list li{padding:10px 0 10px 30px;border-bottom:1px solid var(--border);position:relative;}
.limit-list li::before{content:"—";position:absolute;left:0;color:var(--accent-natural);font-weight:700;}

/* ---- Footer ---- */
.site-footer{background:var(--text-primary);color:#CFDACB;padding:64px 0 24px;}
.footer-top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;margin-bottom:48px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-name{color:#fff;}
.footer-desc{font-size:.88rem;color:#A9BBA4;line-height:1.8;}
.footer-col h4{color:#fff;font-size:.88rem;letter-spacing:.06em;margin-bottom:16px;}
.footer-col ul{list-style:none;padding:0;margin:0;}
.footer-col li{margin-bottom:10px;font-size:.86rem;}
.footer-col a{color:#CFDACB;}
.footer-col a:hover{color:#fff;}
.footer-contact p{margin:0 0 8px;font-size:.86rem;color:#CFDACB;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding-top:24px;
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:.78rem;color:#8FA389;
}
.footer-bottom a{color:#8FA389;}
.footer-legal{display:flex;gap:16px;flex-wrap:wrap;}

/* ---- 404 ---- */
.error-page{text-align:center;padding:120px 24px;}
.error-page .code{font-size:5rem;font-weight:900;color:var(--accent-sub);margin-bottom:0;}

/* ---- Responsive ---- */
@media (max-width:1024px){
  .header-cta .btn-outline{display:none;}
  .grid-4{grid-template-columns:repeat(2,1fr);}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .split{grid-template-columns:1fr;}
  .split.reverse .split-media{order:0;}
  .footer-top{grid-template-columns:1fr 1fr;}
  .related-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:860px){
  .main-nav{
    position:fixed;top:69px;left:0;right:0;bottom:0;background:var(--bg-primary);
    transform:translateX(100%);transition:transform .25s ease;overflow-y:auto;
    padding:10px 0 40px;z-index:99;
  }
  .main-nav.open{transform:translateX(0);}
  .main-nav ul{flex-direction:column;overflow:visible;padding:0 24px;gap:2px;}
  .main-nav a{padding:14px 10px;font-size:1rem;border-bottom:1px solid var(--border);border-radius:0;}
  .header-cta{display:none;}
  .nav-toggle{display:flex;}
  .main-nav.open ~ .header-cta,.main-nav.open .mobile-cta{display:flex;}
  .mobile-cta{display:none;padding:20px 24px;gap:10px;}
  .main-nav.open .mobile-cta{display:flex;flex-direction:column;}
}
@media (max-width:640px){
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr;}
  .form-grid{grid-template-columns:1fr;}
  .footer-top{grid-template-columns:1fr;gap:28px;}
  .related-grid{grid-template-columns:1fr;}
  .dl-grid{grid-template-columns:1fr;}
  .section{padding:52px 0;}
  .hero-inner{padding:72px 0 56px;}
  .step{flex-direction:column;gap:12px;}
}

.skip-link{position:absolute;left:-9999px;top:0;background:#1f1f1f;color:#fff;padding:10px 16px;z-index:1000;text-decoration:none;}
.skip-link:focus{left:12px;top:12px;}

/* heading-level aliases */
.hv-h4{font-size:1em;}
.hv-h3,.hv-h4{
  font-weight:700;
  line-height:1.45;
  margin:0 0 .6em;
  color:var(--text-primary);
}
.hv-h3{font-size:1.25rem;}
.section-dark .hv-h3{color:#EAF0E7;}
.card .hv-h3{margin-bottom:.5em;}
.topic-block .hv-h3{color:var(--accent-main);border-bottom:2px solid var(--bg-secondary);padding-bottom:10px;margin-bottom:16px;}
.step-body .hv-h3{margin-bottom:.3em;}
.article-card-body .hv-h3{font-size:1.08rem;}
.footer-col .hv-h4{color:#fff;font-size:.88rem;letter-spacing:.06em;margin-bottom:16px;}