:root{
  --bg:#F7F8FA;
  --panel:#FFFFFF;
  --text:#1E2430;
  --text-sub:#5A6472;
  --primary:#2563EB;
  --primary-soft:#F5F8FF;
  --primary-soft-border:#DCE6FB;
  --ok:#0E9F6E;
  --ok-soft:#E7F8F1;
  --warn:#D97706;
  --warn-soft:#FDF1DF;
  --border:#E2E5EB;
  --chip-bg:#EDF1F7;
  --chip-bg-hover:#E1E8F5;
  --disabled:#9AA2AE;
}
*{box-sizing:border-box;}
html,body{margin:0;padding:0;}
body{
  background:var(--bg);
  color:var(--text);
  font-family:"Noto Sans JP","Hiragino Kaku Gothic ProN",sans-serif;
  font-size:14px;
  line-height:1.7;
}
.mono{font-family:"JetBrains Mono","Roboto Mono",monospace; font-variant-numeric:tabular-nums;}
a{color:var(--primary);}

/* ---------------- header ---------------- */
header.site-header{
  position:sticky; top:0; z-index:50;
  background:var(--panel); border-bottom:1px solid var(--border);
  display:flex; align-items:center; gap:20px;
  padding:12px 24px;
}
header.site-header .logo{
  font-family:"JetBrains Mono",monospace; font-weight:700; font-size:16px; color:var(--text);
  display:flex; align-items:center; gap:6px; white-space:nowrap;
}
header.site-header .logo .dot{width:8px; height:8px; border-radius:50%; background:var(--ok); display:inline-block;}
header.site-header input#header-search{
  flex:1; max-width:360px; padding:8px 12px; border:1px solid var(--border); border-radius:8px;
  font-size:13px; background:var(--bg); color:var(--text);
}
header.site-header nav{display:flex; gap:16px; margin-left:auto; font-size:13px; color:var(--text-sub); white-space:nowrap;}
header.site-header nav a{color:var(--text-sub); text-decoration:none;}
header.site-header nav a:hover{color:var(--primary);}

/* ---------------- ad slots ---------------- */
.ad-slot{
  display:flex; align-items:center; justify-content:center;
  background:repeating-linear-gradient(45deg,#F0F2F5,#F0F2F5 10px,#E7EAEE 10px,#E7EAEE 20px);
  border:1px dashed var(--border); border-radius:8px; color:var(--text-sub);
  font-size:11px; letter-spacing:.04em; font-family:"JetBrains Mono",monospace;
  margin:16px auto;
}
.ad-slot.leaderboard{width:100%; max-width:728px; height:90px;}
.ad-slot.rectangle{width:300px; height:250px;}
.ad-slot.inline{width:100%; max-width:640px; height:100px;}

/* ---------------- layout ---------------- */
.layout{display:flex; max-width:1200px; margin:0 auto; align-items:flex-start;}
.stepnav{
  width:220px; flex-shrink:0; position:sticky; top:64px;
  padding:24px 12px 24px 24px; display:flex; flex-direction:column; gap:2px;
}
.stepnav .step-link{
  display:flex; align-items:center; gap:10px; padding:10px 12px; border-radius:8px;
  color:var(--text-sub); font-size:13px; cursor:pointer; text-decoration:none;
}
.stepnav .step-link:hover{background:var(--chip-bg);}
.stepnav .step-link.active{background:var(--primary-soft); color:var(--primary); font-weight:700;}
.stepnav .step-link .num{
  width:20px; height:20px; border-radius:50%; border:1.5px solid var(--border);
  display:flex; align-items:center; justify-content:center; font-size:11px; flex-shrink:0;
  font-family:"JetBrains Mono",monospace;
}
.stepnav .step-link.done .num{background:var(--ok); border-color:var(--ok); color:#fff;}
.stepnav .step-link.active .num{border-color:var(--primary); color:var(--primary);}
.stepnav .step-link .val{display:block; font-size:11px; color:var(--text-sub); font-family:"JetBrains Mono",monospace; margin-top:1px;}

.main{flex:1; min-width:0; padding:24px 24px 60px;}

/* summary bar */
.summary-bar{
  position:sticky; top:57px; z-index:40; background:var(--panel);
  border:1px solid var(--border); border-radius:10px; padding:10px 16px; margin-bottom:20px;
  display:flex; align-items:center; gap:18px; flex-wrap:wrap; font-size:12.5px; color:var(--text-sub);
}
.summary-bar b{color:var(--text); font-family:"JetBrains Mono",monospace;}
.summary-bar .power-gauge{margin-left:auto; display:flex; align-items:center; gap:8px;}
.summary-bar .power-bar{width:120px; height:8px; border-radius:4px; background:var(--border); overflow:hidden;}
.summary-bar .power-bar .fill{height:100%; background:var(--ok); transition:width .3s;}
.summary-bar .power-bar .fill.warn{background:var(--warn);}

/* step sections */
.step-section{
  background:var(--panel); border:1px solid var(--border); border-radius:12px;
  padding:22px 24px; margin-bottom:18px; scroll-margin-top:120px;
}
.step-section h2{font-size:17px; margin:0 0 4px; display:flex; align-items:center; gap:8px;}
.step-section h2 .badge{
  width:24px; height:24px; border-radius:50%; background:var(--primary-soft); color:var(--primary);
  display:flex; align-items:center; justify-content:center; font-size:12px; font-family:"JetBrains Mono",monospace; font-weight:700;
}
.step-section p.desc{color:var(--text-sub); font-size:12.5px; margin:0 0 16px;}

/* model cards */
.model-tabs{display:flex; gap:6px; margin-bottom:12px; flex-wrap:wrap;}
.model-tabs button{
  border:1px solid var(--border); background:var(--panel); color:var(--text-sub);
  padding:6px 12px; border-radius:999px; font-size:12px; cursor:pointer;
}
.model-tabs button.active{background:var(--primary); border-color:var(--primary); color:#fff;}
.model-grid{display:grid; grid-template-columns:repeat(auto-fill,minmax(260px,1fr)); gap:12px;}
.model-card{
  border:1px solid var(--border); border-radius:10px; padding:14px 16px; cursor:pointer;
  background:var(--panel); position:relative; transition:transform .12s, box-shadow .12s, border-color .12s;
}
.model-card:hover{border-color:var(--primary); transform:translateY(-2px); box-shadow:0 4px 14px rgba(30,36,48,.08);}
.model-card.selected{border-color:var(--primary); border-width:2px; background:var(--primary-soft);}
.model-card .top-row{display:flex; justify-content:space-between; align-items:center; margin-bottom:6px;}
.model-card .vendor{font-size:11px; color:var(--text-sub); font-weight:700; letter-spacing:.03em;}
.model-card .ff-badge{font-size:10px; background:var(--chip-bg); color:var(--text-sub); padding:2px 7px; border-radius:5px; font-family:"JetBrains Mono",monospace;}
.model-card .name{font-family:"JetBrains Mono",monospace; font-weight:700; font-size:15px; margin-bottom:8px;}
.model-card .specs{font-size:11.5px; color:var(--text-sub); font-family:"JetBrains Mono",monospace; line-height:1.6;}
.model-card .check{
  position:absolute; top:10px; right:10px; width:18px; height:18px; border-radius:50%; background:var(--primary);
  color:#fff; font-size:11px; display:none; align-items:center; justify-content:center;
}
.model-card.selected .check{display:flex;}

/* socket tabs */
.socket-tabs{display:flex; gap:8px; margin-bottom:14px;}
.socket-tabs button{
  border:1px solid var(--border); background:var(--chip-bg); padding:7px 16px; border-radius:8px;
  font-size:12.5px; font-family:"JetBrains Mono",monospace; cursor:pointer; color:var(--text-sub);
}
.socket-tabs button.active{background:var(--primary); border-color:var(--primary); color:#fff;}
.socket-tabs button .filled-dot{width:6px; height:6px; border-radius:50%; background:var(--ok); display:inline-block; margin-right:6px;}

/* chip list (memory / storage / psu) */
.chip-list{display:flex; flex-wrap:wrap; gap:8px;}
.chip{
  border-radius:999px; background:var(--chip-bg); color:var(--text); padding:8px 14px; font-size:12.5px;
  cursor:pointer; border:1px solid transparent; display:flex; align-items:center; gap:6px;
  font-family:"JetBrains Mono",monospace;
}
.chip:hover{background:var(--chip-bg-hover);}
.chip.selected{background:var(--primary); color:#fff;}
.chip .yen{color:var(--text-sub); font-size:11px;}
.chip.selected .yen{color:#dce6fb;}

.custom-field{margin-top:14px; padding-top:14px; border-top:1px dashed var(--border);}
.custom-field label{display:block; font-size:12px; color:var(--text-sub); margin-bottom:6px;}
.custom-field label .optional{font-size:10.5px; color:var(--disabled); background:var(--chip-bg); padding:1px 7px; border-radius:5px; margin-left:4px;}
.custom-field input{
  width:100%; max-width:420px; height:38px; border:1px solid var(--border); border-radius:8px; padding:0 12px;
  font-family:"JetBrains Mono",monospace; font-size:12.5px; background:var(--panel); color:var(--text);
}
.custom-field input:focus{outline:none; border-color:var(--primary); box-shadow:0 0 0 3px var(--primary-soft-border);}

/* result cards (cpu/gpu) */
.result-grid{display:grid; grid-template-columns:repeat(auto-fill,minmax(300px,1fr)); gap:12px;}
.result-card{
  border:1px solid var(--border); border-radius:10px; padding:14px 16px; position:relative;
  border-left:3px solid var(--primary); cursor:pointer; background:var(--panel);
}
.result-card.tier-ok{border-left-color:var(--ok);}
.result-card.tier-warn{border-left-color:var(--warn);}
.result-card.selected{background:var(--primary-soft); box-shadow:inset 0 0 0 1px var(--primary);}
.result-card.top-pick{border-left-color:var(--ok); box-shadow:0 0 0 1px var(--ok-soft);}
.result-card.top-pick:not(.selected){background:var(--ok-soft);}
.chip.top-pick{background:var(--ok-soft); box-shadow:inset 0 0 0 1px var(--ok);}
.chip.top-pick.selected{background:var(--primary);}
.result-card .top{display:flex; justify-content:space-between; align-items:flex-start; gap:8px; margin-bottom:4px;}
.result-card .name{font-family:"JetBrains Mono",monospace; font-weight:700; font-size:15px;}
.result-card .diff{font-size:11px; font-family:"JetBrains Mono",monospace; padding:2px 7px; border-radius:5px; white-space:nowrap;}
.result-card .diff.up{color:var(--ok); background:var(--ok-soft);}
.result-card .diff.down{color:var(--warn); background:var(--warn-soft);}
.result-card .spec-line{font-size:11.5px; color:var(--text-sub); font-family:"JetBrains Mono",monospace; margin-bottom:6px;}
.result-card .price{font-size:12.5px; color:var(--text); font-family:"JetBrains Mono",monospace; font-weight:700;}
.result-card .badges{display:flex; gap:5px; margin-top:8px; flex-wrap:wrap;}
.result-card .badges span{font-size:10px; background:var(--chip-bg); color:var(--text-sub); padding:2px 7px; border-radius:5px;}
.result-card .usecase{font-size:11.5px; color:var(--text-sub); margin-top:6px;}

.empty-note{
  border:1px dashed var(--border); border-radius:8px; padding:16px; text-align:center; color:var(--text-sub); font-size:12.5px;
}

/* inquiry */
.inquiry-hint{font-size:12px; color:var(--text-sub); margin-top:14px;}
.inquiry-hint button.link-btn{
  background:none; border:none; color:var(--primary); cursor:pointer; font-size:12px; padding:0; text-decoration:underline;
}

/* community proof (機種診断内でのみんなの実例) */
#community-proof{
  margin-top:18px; padding-top:16px; border-top:1px solid var(--border);
}
#community-proof .cp-title{font-size:13px; font-weight:700; color:var(--text); margin-bottom:2px; display:flex; align-items:center; gap:6px;}
#community-proof .cp-title .n{color:var(--ok); font-family:"JetBrains Mono",monospace;}
#community-proof .cp-sub{font-size:11.5px; color:var(--text-sub); margin-bottom:10px;}
#community-proof .cp-list{display:flex; flex-direction:column; gap:6px;}
#community-proof .cp-row{
  display:flex; gap:10px; align-items:baseline; font-size:12px; background:var(--chip-bg); border-radius:8px; padding:8px 12px;
  flex-wrap:wrap;
}
#community-proof .cp-row .cp-nick{color:var(--primary); font-weight:700; font-family:"JetBrains Mono",monospace; flex-shrink:0;}
#community-proof .cp-row .cp-spec{color:var(--text-sub); font-family:"JetBrains Mono",monospace;}
#community-proof .cp-more{font-size:11.5px; margin-top:8px;}
#community-proof .cp-more a{color:var(--primary); text-decoration:none;}
.modal-backdrop{
  position:fixed; inset:0; background:rgba(20,25,33,.45); display:none; align-items:center; justify-content:center; z-index:100;
}
.modal-backdrop.open{display:flex;}
.modal{
  background:var(--panel); border-radius:12px; padding:24px; width:420px; max-width:calc(100vw - 32px);
}
.modal h3{margin:0 0 4px;}
.modal p{color:var(--text-sub); font-size:12.5px; margin:0 0 16px;}
.modal label{display:block; font-size:12px; color:var(--text-sub); margin-bottom:4px; margin-top:12px;}
.modal input, .modal textarea{
  width:100%; padding:8px 10px; border:1px solid var(--border); border-radius:7px; font-size:13px;
  font-family:inherit; background:var(--bg); color:var(--text);
}
.modal textarea{min-height:70px; resize:vertical;}
.modal .actions{display:flex; gap:8px; margin-top:18px; justify-content:flex-end;}
.btn{
  border:none; border-radius:8px; padding:9px 18px; font-size:13px; cursor:pointer; font-weight:700;
}
.btn.primary{background:var(--primary); color:#fff;}
.btn.ghost{background:var(--chip-bg); color:var(--text);}
.toast{
  position:fixed; bottom:24px; left:50%; transform:translateX(-50%); background:var(--text); color:#fff;
  padding:12px 20px; border-radius:8px; font-size:13px; display:none; z-index:200; font-family:"JetBrains Mono",monospace;
}
.toast.show{display:block;}

/* result summary */
.result-summary{
  background:var(--text); color:#F7F8FA; border-radius:12px; padding:22px 26px; margin-top:8px;
}
.result-summary h2{color:#fff; margin:0 0 14px;}
.result-summary table{width:100%; border-collapse:collapse; font-family:"JetBrains Mono",monospace; font-size:12.5px;}
.result-summary td{padding:6px 4px; border-bottom:1px solid rgba(255,255,255,.12); vertical-align:top;}
.result-summary td.k{color:#9BA8C4; white-space:nowrap; width:120px;}
.result-summary tr.total td{border-bottom:none; padding-top:12px; font-size:15px; font-weight:700; color:#fff;}
.result-summary .power-note{margin-top:14px; font-size:12px; color:#9BA8C4;}
.result-summary .actions{display:flex; gap:10px; margin-top:18px; flex-wrap:wrap;}
.result-summary .btn.light{background:#fff; color:var(--text);}
.result-summary .btn.outline{background:transparent; color:#fff; border:1px solid rgba(255,255,255,.3);}

footer.site-footer{
  border-top:1px solid var(--border); padding:24px; text-align:center; color:var(--text-sub); font-size:12px;
  display:flex; flex-direction:column; gap:6px; align-items:center;
}
footer.site-footer .links{display:flex; gap:16px;}
footer.site-footer .links a{color:var(--text-sub); text-decoration:none;}
footer.site-footer .disclaimer{max-width:640px; font-size:11px; color:var(--disabled);}

header.site-header nav a.active{color:var(--primary); border-bottom:2px solid var(--primary); padding-bottom:2px;}

/* ================= community page ================= */
.community-wrap{max-width:1120px; margin:0 auto; padding:0 24px 60px;}

.page-hero{padding:28px 0 8px;}
.page-hero h1{font-family:"Shippori Mincho","Noto Sans JP",serif; font-size:26px; font-weight:700; color:var(--text); margin:0 0 6px;}
.page-hero .lead{color:var(--text-sub); font-size:13.5px; margin:0 0 14px;}
.page-hero .hero-stats{display:flex; gap:22px; font-size:12.5px; color:var(--text-sub);}
.page-hero .hero-stats strong{font-family:"JetBrains Mono",monospace; color:var(--primary); font-size:14px; margin-right:4px;}

.community-grid{display:grid; grid-template-columns:360px 1fr; gap:28px; align-items:start; margin-top:14px;}
@media (max-width:1023px){ .community-grid{grid-template-columns:1fr;} }

.post-form-card{
  position:sticky; top:80px; background:var(--panel); border:1px solid var(--border); border-radius:10px;
  padding:22px; box-shadow:0 1px 2px rgba(30,36,48,.04);
}
@media (max-width:1023px){ .post-form-card{position:static;} }
.post-form-card h2{font-size:16px; margin:0 0 3px;}
.post-form-card .sub{color:var(--text-sub); font-size:12px; margin:0 0 16px;}
.post-form-card label{display:flex; justify-content:space-between; align-items:baseline; font-size:12.5px; color:var(--text-sub); margin:14px 0 5px;}
.post-form-card label:first-of-type{margin-top:0;}
.post-form-card label .optional{font-size:10.5px; color:var(--disabled); background:var(--chip-bg); padding:1px 7px; border-radius:5px;}
.post-form-card label .required{color:var(--warn); font-weight:700;}
.post-form-card input, .post-form-card textarea{
  width:100%; height:40px; border:1px solid var(--border); border-radius:8px; padding:0 12px;
  font-family:"JetBrains Mono",monospace; font-size:13px; background:var(--bg); color:var(--text);
}
.post-form-card input::placeholder, .post-form-card textarea::placeholder{color:var(--disabled); font-family:"Noto Sans JP";}
.post-form-card textarea{height:64px; padding:10px 12px; resize:vertical; font-family:"Noto Sans JP"; font-size:13px;}
.post-form-card input:focus, .post-form-card textarea:focus{
  outline:none; border-color:var(--primary); box-shadow:0 0 0 3px var(--primary-soft-border);
}
.post-form-card .submit-btn{
  width:100%; height:44px; margin-top:18px; background:var(--primary); color:#fff; border:none;
  border-radius:8px; font-weight:700; font-size:14px; cursor:pointer;
}
.post-form-card .submit-btn:hover{background:#1d4fc4;}
.post-form-card .form-note{font-size:11px; color:var(--disabled); text-align:center; margin-top:10px;}
.post-form-card .field-error{color:var(--warn); font-size:11.5px; margin-top:4px;}

.list-header{display:flex; align-items:center; justify-content:space-between; margin-bottom:12px;}
.list-header h2{font-size:16px; margin:0;}
.list-header .count{font-family:"JetBrains Mono",monospace; color:var(--text-sub); font-weight:400;}
.list-header select{
  border:1px solid var(--border); background:var(--panel); color:var(--text-sub); border-radius:8px;
  padding:6px 10px; font-size:12.5px; cursor:pointer;
}

.spec-card{
  background:var(--panel); border:1px solid var(--border); border-radius:10px; padding:18px 22px;
  box-shadow:0 1px 2px rgba(30,36,48,.04); margin-bottom:12px;
}
.spec-card:hover{border-color:#C9D0DA;}
.spec-card .card-top{display:flex; justify-content:space-between; align-items:baseline; gap:12px; margin-bottom:12px; flex-wrap:wrap;}
.spec-card .card-top .model{font-family:"JetBrains Mono",monospace; font-weight:700; font-size:16px; color:var(--text);}
.spec-card .card-top .meta{font-size:12px; color:var(--text-sub); white-space:nowrap;}
.spec-card .card-top .meta .nick{color:var(--primary); font-weight:700;}
.spec-card .card-top .meta .delete-link{
  background:none; border:none; color:var(--disabled); font-size:11px; cursor:pointer; padding:0; text-decoration:underline;
}
.spec-card .card-top .meta .delete-link:hover{color:var(--warn);}
.spec-card .spec-tags{display:grid; grid-template-columns:repeat(auto-fit,minmax(150px,1fr)); gap:10px; margin-bottom:10px;}
.spec-card .spec-tag{background:var(--chip-bg); border-radius:8px; padding:8px 12px;}
.spec-card .spec-tag .k{font-size:10px; letter-spacing:.06em; color:var(--text-sub); text-transform:uppercase; font-family:"JetBrains Mono",monospace;}
.spec-card .spec-tag .v{font-family:"JetBrains Mono",monospace; font-size:13px; color:var(--text); margin-top:2px; white-space:pre-line; word-break:break-word;}
.spec-card .comment{font-size:13px; color:var(--text-sub); border-left:3px solid var(--border); padding-left:10px; margin-top:4px;}
.community-empty{color:var(--text-sub); font-size:13px; text-align:center; padding:40px 0;}
.load-more-btn{
  display:block; margin:16px auto 0; background:var(--panel); border:1px solid var(--border); color:var(--text);
  padding:9px 20px; border-radius:8px; cursor:pointer; font-size:13px;
}

@media (max-width:900px){
  .layout{flex-direction:column;}
  .stepnav{
    position:sticky; top:57px; width:100%; flex-direction:row; overflow-x:auto; padding:10px 16px;
    background:var(--panel); border-bottom:1px solid var(--border); gap:6px;
  }
  .stepnav .step-link{flex-shrink:0;}
  .stepnav .step-link .val{display:none;}
  .main{padding:16px;}
  header.site-header{flex-wrap:wrap;}
  header.site-header input#header-search{order:3; max-width:none; width:100%;}
}