/* =========================================================
   T-LAB コーポレートサイト 共通スタイル
   配色：紺 #1f3a5f × 青 #2f80c4（ブランド厳守）
   ========================================================= */
:root{
  --navy:#1f3a5f; --navy-deep:#16293f; --accent:#2f80c4; --accent-soft:#eaf2fb;
  --accent-2:#9ecbf0;
  --ink:#2a3340; --sub:#5b6776; --line:#dfe5ec; --bg:#f4f6f9; --paper:#ffffff;
  --good:#2f9e7d; --good-soft:#e8f6f0; --warm:#c98a3c; --warm-soft:#fbf2e6;
  --shadow:0 10px 40px rgba(22,41,63,.08);
  --shadow-lg:0 18px 60px rgba(22,41,63,.14);
  --radius:16px;
  --maxw:1080px;
}
*{ box-sizing:border-box; margin:0; padding:0; }
html{ scroll-behavior:smooth; scroll-padding-top:84px; }
body{
  background:var(--bg); color:var(--ink);
  font-family:"Noto Sans JP","Hiragino Kaku Gothic ProN","Hiragino Sans","Yu Gothic","Meiryo",sans-serif;
  -webkit-font-smoothing:antialiased; line-height:1.9; font-size:16px;
}
img{ max-width:100%; display:block; }
a{ color:var(--accent); }

.wrap{ max-width:var(--maxw); margin:0 auto; padding:0 clamp(20px,5vw,40px); }

/* ---------- ヘッダー ---------- */
.site-header{
  position:sticky; top:0; z-index:50;
  background:rgba(255,255,255,.88); backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.site-header .bar{ display:flex; align-items:center; justify-content:space-between; height:66px; }
.site-header .brand{ display:flex; align-items:center; gap:10px; text-decoration:none; }
.site-header .brand img{ height:38px; width:auto; }
.site-header .brand .brand-name{ font-size:21px; font-weight:800; color:var(--navy); letter-spacing:.06em; }
.nav{ display:flex; align-items:center; gap:6px; }
.nav a{
  text-decoration:none; color:var(--ink); font-weight:700; font-size:14.5px;
  padding:8px 14px; border-radius:10px; transition:.15s;
}
.nav a:hover{ background:var(--accent-soft); color:var(--navy); }
.nav a.cta{
  background:var(--accent); color:#fff; margin-left:6px;
  box-shadow:0 6px 18px rgba(47,128,196,.32);
}
.nav a.cta:hover{ background:#2670ad; color:#fff; }
.nav-toggle{ display:none; background:none; border:0; cursor:pointer; padding:8px; }
.nav-toggle span{ display:block; width:24px; height:2.5px; background:var(--navy); margin:5px 0; border-radius:2px; transition:.2s; }

/* ---------- ヒーロー ---------- */
.hero{
  position:relative; overflow:hidden; color:#fff;
  background:linear-gradient(135deg,var(--navy-deep) 0%,var(--navy) 55%,var(--accent) 165%);
}
.hero::after{
  content:""; position:absolute; right:-90px; top:-60px; width:460px; height:460px;
  background:url("symbol.png") no-repeat center/contain; opacity:.07; pointer-events:none;
}
.hero .wrap{ position:relative; z-index:1; padding-top:clamp(56px,8vw,92px); padding-bottom:clamp(56px,8vw,92px); }
.hero .kicker{ font-size:13px; letter-spacing:.22em; color:var(--accent-2); font-weight:700; margin-bottom:18px; }
.hero h1{ font-size:clamp(28px,5vw,46px); font-weight:800; line-height:1.45; margin-bottom:22px; letter-spacing:.01em; }
.hero h1 .em{ color:var(--accent-2); }
.hero p.lead{ font-size:clamp(15px,2vw,18px); color:#dbe8f6; line-height:2; max-width:60ch; }
.hero .btns{ margin-top:34px; display:flex; gap:14px; flex-wrap:wrap; }

/* ---------- ボタン ---------- */
.btn{
  display:inline-flex; align-items:center; gap:9px; text-decoration:none; font-weight:800;
  font-size:15.5px; padding:15px 30px; border-radius:40px; transition:.18s; border:0; cursor:pointer;
}
.btn-primary{ background:#fff; color:var(--navy); box-shadow:var(--shadow); }
.btn-primary:hover{ transform:translateY(-2px); box-shadow:var(--shadow-lg); }
.btn-accent{ background:var(--accent); color:#fff; box-shadow:0 8px 24px rgba(47,128,196,.34); }
.btn-accent:hover{ transform:translateY(-2px); background:#2670ad; }
.btn-ghost{ background:transparent; color:#fff; border:1.5px solid rgba(255,255,255,.55); }
.btn-ghost:hover{ background:rgba(255,255,255,.12); }
.btn .ar{ font-size:18px; }

/* ---------- セクション共通 ---------- */
section.block{ padding:clamp(54px,8vw,88px) 0; }
.eyebrow{
  display:inline-block; font-size:13px; font-weight:800; color:#fff; background:var(--accent);
  padding:5px 16px; border-radius:20px; letter-spacing:.06em; margin-bottom:18px;
}
.eyebrow.soft{ background:var(--accent-soft); color:var(--accent); }
h2.sec-title{ font-size:clamp(24px,3.8vw,34px); line-height:1.5; color:var(--navy); font-weight:800; margin-bottom:16px; letter-spacing:.01em; }
p.sec-lead{ font-size:clamp(15px,1.9vw,17.5px); color:var(--ink); line-height:2; max-width:64ch; }
.center{ text-align:center; } .center .sec-lead{ margin-left:auto; margin-right:auto; }
.mark{ background:linear-gradient(transparent 60%,#ffe6a8 60%); font-weight:800; }
.big{ font-weight:800; color:var(--navy); }
.accent-t{ color:var(--accent); font-weight:800; }
.alt{ background:var(--paper); border-top:1px solid var(--line); border-bottom:1px solid var(--line); }

/* ---------- お悩みリスト ---------- */
.pains{ display:grid; grid-template-columns:1fr 1fr; gap:14px; margin-top:30px; }
.pain{ display:flex; gap:13px; align-items:flex-start; background:var(--paper); border:1px solid var(--line);
  border-radius:12px; padding:18px 20px; box-shadow:var(--shadow); }
.pain .ic{ flex:0 0 auto; width:26px; height:26px; border-radius:50%; background:var(--accent-soft);
  color:var(--accent); font-weight:800; display:flex; align-items:center; justify-content:center; font-size:15px; }
.pain p{ font-size:14.5px; line-height:1.8; }

/* ---------- サービスカード ---------- */
.svc-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:20px; margin-top:34px; }
.svc{ background:var(--paper); border:1px solid var(--line); border-radius:var(--radius); padding:30px 26px;
  box-shadow:var(--shadow); display:flex; flex-direction:column; transition:.2s; }
.svc:hover{ transform:translateY(-4px); box-shadow:var(--shadow-lg); border-color:#cfe0f4; }
.svc .no{ font-size:12.5px; font-weight:800; color:var(--accent); letter-spacing:.08em; margin-bottom:10px; }
.svc .ic-wrap{ width:54px; height:54px; border-radius:14px; background:linear-gradient(135deg,var(--navy),var(--accent));
  display:flex; align-items:center; justify-content:center; margin-bottom:16px; }
.svc .ic-wrap svg{ width:28px; height:28px; fill:#fff; }
.svc h3{ font-size:19px; color:var(--navy); font-weight:800; line-height:1.5; margin-bottom:10px; }
.svc p{ font-size:14px; color:var(--ink); line-height:1.85; margin-bottom:16px; flex:1; }
.svc .price{ font-size:13px; color:var(--sub); border-top:1px dashed var(--line); padding-top:14px; }
.svc .price b{ font-size:20px; color:var(--navy); }
.svc .more{ margin-top:14px; font-size:14px; font-weight:800; color:var(--accent); text-decoration:none; }
.svc .more:hover{ text-decoration:underline; }

/* ---------- 数字カード ---------- */
.num-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:16px; margin-top:34px; }
.numc{ background:var(--paper); border:1px solid var(--line); border-top:6px solid var(--accent); border-radius:14px;
  padding:26px 22px; text-align:center; box-shadow:var(--shadow); }
.numc .nl{ font-size:13px; font-weight:800; color:var(--accent); margin-bottom:10px; }
.numc .nb{ font-size:clamp(26px,4vw,36px); font-weight:800; color:var(--navy); line-height:1.2; }
.numc .nb small{ font-size:15px; }
.numc .nd{ font-size:13px; color:var(--sub); line-height:1.7; margin-top:10px; }

/* ---------- 選ばれる理由 ---------- */
.reasons{ display:grid; grid-template-columns:1fr 1fr; gap:18px; margin-top:34px; }
.reason{ background:var(--paper); border:1px solid var(--line); border-radius:14px; padding:26px 26px; box-shadow:var(--shadow); }
.reason .rn{ display:inline-flex; align-items:center; justify-content:center; width:40px; height:40px; border-radius:50%;
  background:var(--navy); color:#fff; font-weight:800; font-size:16px; margin-bottom:14px; }
.reason h3{ font-size:17.5px; color:var(--navy); font-weight:800; line-height:1.5; margin-bottom:9px; }
.reason p{ font-size:14px; color:var(--ink); line-height:1.85; }

/* ---------- 流れ ---------- */
.steps{ margin-top:34px; }
.step{ display:flex; gap:20px; align-items:flex-start; padding-bottom:26px; position:relative; }
.step:last-child{ padding-bottom:0; }
.step::after{ content:""; position:absolute; left:23px; top:50px; bottom:0; width:2px; background:var(--line); }
.step:last-child::after{ display:none; }
.step .sn{ flex:0 0 auto; width:48px; height:48px; border-radius:50%; background:var(--accent); color:#fff;
  font-size:19px; font-weight:800; display:flex; align-items:center; justify-content:center; z-index:2; box-shadow:0 6px 16px rgba(47,128,196,.3); }
.step .st{ font-size:17px; font-weight:800; color:var(--navy); margin-bottom:4px; }
.step .sd{ font-size:14.5px; color:var(--sub); line-height:1.85; }

/* ---------- Q&A ---------- */
.faq{ margin-top:30px; display:flex; flex-direction:column; gap:14px; }
.qa{ background:var(--paper); border:1px solid var(--line); border-radius:12px; padding:20px 24px; box-shadow:var(--shadow); }
.qa .q{ font-size:16px; font-weight:800; color:var(--navy); display:flex; gap:11px; align-items:flex-start; }
.qa .q .b{ flex:0 0 auto; font-size:13px; font-weight:800; color:#fff; background:var(--accent); border-radius:6px; padding:2px 9px; }
.qa .a{ font-size:14.5px; line-height:1.9; color:var(--ink); margin-top:11px; padding-left:34px; }
.qa .a b{ color:var(--navy); }

/* ---------- 会社概要 / 表 ---------- */
.info-table{ width:100%; border-collapse:collapse; margin-top:28px; background:var(--paper);
  border:1px solid var(--line); border-radius:14px; overflow:hidden; box-shadow:var(--shadow); }
.info-table th{ background:var(--accent-soft); color:var(--navy); font-weight:800; text-align:left;
  padding:16px 20px; width:32%; font-size:14.5px; vertical-align:top; border-bottom:1px solid var(--line); white-space:nowrap; }
.info-table td{ padding:16px 20px; font-size:14.5px; line-height:1.85; border-bottom:1px solid var(--line); vertical-align:top; }
.info-table tr:last-child th,.info-table tr:last-child td{ border-bottom:0; }

/* ---------- 料金表（servicesページ） ---------- */
.detail{ background:var(--paper); border:1px solid var(--line); border-radius:var(--radius); padding:clamp(28px,4vw,44px);
  box-shadow:var(--shadow); margin-top:28px; }
.detail + .detail{ margin-top:26px; }
.detail .head{ display:flex; gap:18px; align-items:center; margin-bottom:18px; }
.detail .ic-wrap{ width:60px; height:60px; border-radius:16px; background:linear-gradient(135deg,var(--navy),var(--accent));
  display:flex; align-items:center; justify-content:center; flex:0 0 auto; }
.detail .ic-wrap svg{ width:30px; height:30px; fill:#fff; }
.detail .head h3{ font-size:clamp(20px,2.6vw,25px); color:var(--navy); font-weight:800; line-height:1.4; }
.detail .head .tag{ font-size:12.5px; font-weight:800; color:var(--accent); letter-spacing:.06em; }
.detail p.desc{ font-size:15px; line-height:1.95; color:var(--ink); margin-bottom:18px; }
.feat{ list-style:none; display:grid; grid-template-columns:1fr 1fr; gap:10px 24px; margin-bottom:22px; }
.feat li{ font-size:14px; line-height:1.7; padding-left:26px; position:relative; }
.feat li::before{ content:"✓"; position:absolute; left:0; color:var(--good); font-weight:800; }
.price-rows{ border-top:2px solid var(--line); padding-top:18px; }
.price-row{ display:flex; justify-content:space-between; align-items:baseline; gap:16px; padding:11px 0; border-bottom:1px dashed var(--line); }
.price-row:last-child{ border-bottom:0; }
.price-row .pn{ font-size:14.5px; font-weight:700; color:var(--ink); }
.price-row .pn small{ display:block; font-size:12.5px; color:var(--sub); font-weight:500; margin-top:2px; }
.price-row .pp{ font-size:clamp(18px,2.4vw,22px); font-weight:800; color:var(--navy); white-space:nowrap; }
.price-row .pp small{ font-size:13px; color:var(--sub); font-weight:700; }
.notebox{ background:var(--accent-soft); border-radius:12px; padding:16px 20px; font-size:13.5px; color:var(--ink); line-height:1.85; margin-top:22px; }
.notebox b{ color:var(--navy); }

/* ---------- CTA 帯 ---------- */
.cta-band{ background:linear-gradient(135deg,var(--navy-deep),var(--navy) 70%,var(--accent) 175%); color:#fff; text-align:center; }
.cta-band h2{ color:#fff; font-size:clamp(23px,3.6vw,32px); font-weight:800; line-height:1.5; margin-bottom:16px; }
.cta-band p{ color:#dbe8f6; font-size:16px; line-height:1.95; max-width:58ch; margin:0 auto 30px; }
.cta-band .note{ margin-top:18px; font-size:13px; color:#bcd2e8; }

/* ---------- フッター ---------- */
.site-footer{ background:var(--navy-deep); color:#cdd8e6; padding:54px 0 30px; }
.site-footer .cols{ display:grid; grid-template-columns:1.4fr 1fr 1fr; gap:36px; }
.site-footer .brand{ display:flex; align-items:center; gap:10px; margin-bottom:14px; }
.site-footer .brand img{ height:42px; }
.site-footer .brand .brand-name{ font-size:23px; font-weight:800; color:#fff; letter-spacing:.06em; }
.site-footer p.about{ font-size:13.5px; line-height:1.9; color:#aebfd2; max-width:40ch; }
.site-footer h4{ font-size:13px; color:#fff; font-weight:800; letter-spacing:.06em; margin-bottom:14px; }
.site-footer ul{ list-style:none; }
.site-footer li{ margin-bottom:10px; }
.site-footer a{ color:#cdd8e6; text-decoration:none; font-size:13.5px; }
.site-footer a:hover{ color:#fff; text-decoration:underline; }
.site-footer .copy{ margin-top:40px; padding-top:22px; border-top:1px solid rgba(255,255,255,.13);
  font-size:12.5px; color:#8fa2b8; display:flex; justify-content:space-between; gap:14px; flex-wrap:wrap; }

/* ---------- 法務ページ ---------- */
.legal{ background:var(--paper); border:1px solid var(--line); border-radius:var(--radius); padding:clamp(28px,4vw,48px); box-shadow:var(--shadow); margin-top:8px; }
.legal h3{ font-size:18px; color:var(--navy); font-weight:800; margin:28px 0 10px; padding-top:18px; border-top:1px solid var(--line); }
.legal h3:first-child{ border-top:0; padding-top:0; margin-top:0; }
.legal p,.legal li{ font-size:14.5px; line-height:1.95; color:var(--ink); }
.legal ul,.legal ol{ margin:8px 0 8px 22px; }
.legal li{ margin-bottom:6px; }
.legal .upd{ font-size:13px; color:var(--sub); margin-top:30px; text-align:right; }
.page-head{ background:linear-gradient(135deg,var(--navy) 0%,var(--accent) 180%); color:#fff; }
.page-head .wrap{ padding:clamp(40px,6vw,64px) clamp(20px,5vw,40px); }
.page-head h1{ font-size:clamp(24px,4vw,36px); font-weight:800; }
.page-head p{ color:#dbe8f6; margin-top:10px; font-size:15px; }

/* ---------- レスポンシブ ---------- */
@media (max-width:860px){
  .svc-grid,.num-grid{ grid-template-columns:1fr; }
  .reasons{ grid-template-columns:1fr; }
  .pains{ grid-template-columns:1fr; }
  .feat{ grid-template-columns:1fr; }
  .site-footer .cols{ grid-template-columns:1fr; gap:28px; }
  .nav{ position:fixed; top:66px; right:0; left:0; background:#fff; border-bottom:1px solid var(--line);
    flex-direction:column; align-items:stretch; padding:10px 20px 18px; gap:2px; display:none; box-shadow:var(--shadow-lg); }
  .nav.open{ display:flex; }
  .nav a{ padding:13px 12px; font-size:15.5px; }
  .nav a.cta{ margin-left:0; margin-top:8px; text-align:center; }
  .nav-toggle{ display:block; }
}
@media (max-width:520px){
  .info-table th{ width:38%; white-space:normal; }
  .price-row{ flex-direction:column; gap:2px; }
}

/* ---------- AI体験デモ ---------- */
.demo{ background:linear-gradient(135deg,var(--navy-deep),var(--navy) 70%,var(--accent) 180%); color:#fff; }
.demo h2.sec-title{ color:#fff; }
.demo p.sec-lead{ color:#dbe8f6; margin-left:auto; margin-right:auto; }
.demo .eyebrow.soft{ background:rgba(255,255,255,.16); color:#fff; }
.demo-frame{ max-width:840px; margin:34px auto 0; border-radius:16px; overflow:hidden;
  box-shadow:0 24px 70px rgba(0,0,0,.42); background:#fff; border:1px solid rgba(255,255,255,.22); }
.demo-frame iframe{ width:100%; height:600px; border:0; display:block; background:#fff; }
.demo-frame .demo-launch{ width:100%; height:600px; border:0; background:#fff; cursor:pointer; display:flex; flex-direction:column; align-items:center; justify-content:center; gap:14px; text-align:center; padding:0 24px; transition:background .15s; }
.demo-frame .demo-launch:hover{ background:#f4f8fd; }
.demo-launch .dl-ic{ width:78px; height:78px; border-radius:50%; background:linear-gradient(135deg,var(--navy),var(--accent)); display:flex; align-items:center; justify-content:center; box-shadow:0 10px 26px rgba(47,128,196,.35); }
.demo-launch .dl-t{ font-size:23px; font-weight:800; color:var(--navy); }
.demo-launch .dl-s{ font-size:14.5px; color:var(--sub); line-height:1.7; }
@media (max-width:520px){ .demo-frame .demo-launch{ height:480px; } }
.demo-note{ font-size:12.5px; color:#bcd2e8; line-height:1.8; margin:16px auto 0; max-width:62ch; }
@media (max-width:520px){ .demo-frame iframe{ height:520px; } }