/* =========================================================
   税理士ラボ｜共通スタイル
   ========================================================= */

:root{
  --navy:#0B1F3A;
  --navy2:#1E3A5F;
  --teal:#0D9488;
  --teal2:#047857;
  --gold:#F59E0B;
  --gold2:#92400E;
  --orange:#EA580C;
  --red:#DC2626;
  --bg:#F8FAFC;
  --bg2:#F1F5F9;
  --white:#FFFFFF;
  --text:#1F2937;
  --muted:#64748B;
  --border:#E5E7EB;
  --border2:#CBD5E1;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Helvetica Neue","Hiragino Kaku Gothic ProN","Hiragino Sans","Yu Gothic Medium",Meiryo,sans-serif;
  color:var(--text);
  background:var(--bg);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--teal);text-decoration:none;transition:color .2s}
a:hover{color:var(--teal2)}
button{font-family:inherit;cursor:pointer;border:none;background:none}

/* Container */
.container{max-width:1200px;margin:0 auto;padding:0 24px}

/* ====== Header ====== */
.site-header{
  position:fixed;top:0;left:0;right:0;
  background:rgba(11,31,58,.96);
  backdrop-filter:blur(8px);
  z-index:100;
  border-bottom:1px solid rgba(255,255,255,.1);
}
.site-header .nav{
  display:flex;justify-content:space-between;align-items:center;
  height:64px;
}
.logo-wrap{display:flex;align-items:center;gap:12px;text-decoration:none}
.logo-mark{
  width:34px;height:34px;border-radius:8px;
  background:linear-gradient(135deg,var(--teal) 0%,var(--teal2) 100%);
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-weight:800;font-size:14px;
}
.logo-text{
  font-size:16px;font-weight:700;color:#fff;
  letter-spacing:.3px;line-height:1.2;
}
.logo-text small{
  display:block;font-size:10px;color:rgba(255,255,255,.6);
  font-weight:500;margin-top:2px;letter-spacing:.5px;
}
.nav-links{
  display:flex;gap:28px;align-items:center;
  list-style:none;
}
.nav-links a{
  color:rgba(255,255,255,.85);font-size:14px;font-weight:500;
  text-decoration:none;transition:color .2s;
}
.nav-links a:hover{color:var(--teal)}
.nav-cta{
  background:var(--teal);color:#fff;
  padding:10px 22px;border-radius:6px;
  font-weight:600;font-size:14px;text-decoration:none;
  transition:opacity .2s;
}
.nav-cta:hover{opacity:.9;color:#fff}
.menu-toggle{display:none;color:#fff;font-size:24px;background:none;border:none;cursor:pointer}
.mobile-menu{
  display:none;position:fixed;top:64px;left:0;right:0;
  background:var(--navy);
  padding:24px;z-index:99;
  border-bottom:1px solid rgba(255,255,255,.1);
}
.mobile-menu.open{display:block}
.mobile-menu a{
  display:block;color:#fff;padding:12px 0;
  border-bottom:1px solid rgba(255,255,255,.1);
  font-size:15px;text-decoration:none;
}
.mobile-menu a:last-child{border-bottom:none}

/* ====== Hero (各ページで使う) ====== */
.hero{
  background:linear-gradient(135deg,var(--navy) 0%,var(--navy2) 100%);
  color:#fff;
  padding:160px 0 100px;
  position:relative;overflow:hidden;
}
.hero::before{
  content:'';position:absolute;top:0;right:0;
  width:600px;height:600px;
  background:radial-gradient(circle,rgba(13,148,136,.18) 0%,transparent 70%);
  border-radius:50%;
  transform:translate(30%,-30%);
}
.hero-content{position:relative;max-width:840px}
.hero-tag{
  display:inline-block;
  background:rgba(13,148,136,.2);
  border:1px solid var(--teal);
  color:var(--teal);
  padding:6px 14px;border-radius:99px;
  font-size:13px;font-weight:600;
  margin-bottom:24px;letter-spacing:.5px;
}
.hero h1{
  font-size:54px;font-weight:800;line-height:1.25;
  margin-bottom:24px;letter-spacing:-.5px;
}
.hero h1 span{color:var(--teal)}
.hero-sub{
  font-size:18px;color:rgba(255,255,255,.85);
  margin-bottom:24px;max-width:780px;line-height:1.8;
}
.hero-bullets{
  display:flex;gap:24px;flex-wrap:wrap;margin-bottom:36px;
}
.hero-bullets div{
  display:flex;align-items:center;gap:8px;
  font-size:14px;color:rgba(255,255,255,.9);
}
.hero-bullets div::before{
  content:'✓';color:var(--teal);font-weight:bold;font-size:16px;
}
.hero-ctas{display:flex;gap:16px;flex-wrap:wrap}

/* ====== Buttons ====== */
.btn-primary{
  background:var(--teal);color:#fff;
  padding:16px 32px;border-radius:8px;
  font-weight:700;font-size:16px;text-decoration:none;
  display:inline-flex;align-items:center;gap:8px;
  transition:all .2s;
  box-shadow:0 4px 12px rgba(13,148,136,.3);
  border:none;cursor:pointer;
}
.btn-primary:hover{
  transform:translateY(-2px);
  box-shadow:0 8px 20px rgba(13,148,136,.4);
  color:#fff;
}
.btn-secondary{
  background:transparent;color:#fff;
  border:1.5px solid rgba(255,255,255,.3);
  padding:16px 32px;border-radius:8px;
  font-weight:600;font-size:16px;text-decoration:none;
  transition:all .2s;
}
.btn-secondary:hover{
  background:rgba(255,255,255,.1);
  border-color:#fff;color:#fff;
}
.btn-outline{
  background:transparent;color:var(--teal);
  border:1.5px solid var(--teal);
  padding:14px 28px;border-radius:8px;
  font-weight:600;font-size:15px;text-decoration:none;
  transition:all .2s;display:inline-block;
}
.btn-outline:hover{background:var(--teal);color:#fff}

/* ====== Section ====== */
section{padding:100px 0}
.section-tag{
  display:inline-block;color:var(--teal);
  font-size:12px;font-weight:700;
  letter-spacing:2px;text-transform:uppercase;
  margin-bottom:12px;
}
.section-title{
  font-size:36px;font-weight:800;line-height:1.3;
  margin-bottom:16px;color:var(--navy);
  letter-spacing:-.5px;
}
.section-sub{
  font-size:17px;color:var(--muted);
  margin-bottom:56px;max-width:760px;line-height:1.8;
}

/* ====== Cards ====== */
.card-grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card-grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.card-grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}

.card{
  background:#fff;
  padding:32px;
  border-radius:12px;
  border:1px solid var(--border);
  transition:all .2s;
}
.card:hover{
  transform:translateY(-4px);
  box-shadow:0 12px 32px rgba(11,31,58,.08);
}
.card-num{
  font-size:13px;font-weight:700;color:var(--teal);
  letter-spacing:1.5px;margin-bottom:8px;
}
.card-title{
  font-size:22px;font-weight:800;color:var(--navy);
  margin-bottom:8px;letter-spacing:-.3px;
}
.card-meta{font-size:13px;color:var(--muted);margin-bottom:18px}
.card-desc{
  font-size:15px;color:var(--text);
  line-height:1.7;margin-bottom:24px;
}
.card-features{list-style:none;flex-grow:1}
.card-features li{
  padding:6px 0;padding-left:24px;position:relative;
  font-size:14px;color:var(--text);
}
.card-features li::before{
  content:'→';position:absolute;left:0;top:6px;
  color:var(--teal);font-weight:bold;
}
.card-cta{
  margin-top:24px;padding-top:20px;
  border-top:1px solid var(--border);
  font-size:13px;color:var(--teal);font-weight:600;
}

/* ====== 4ラボカード（トップページ・特殊） ====== */
.labs-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.lab-card{
  background:#fff;
  padding:32px 24px;
  border-radius:12px;
  border:1px solid var(--border);
  transition:all .2s;
  text-decoration:none;color:inherit;
  display:flex;flex-direction:column;
  position:relative;
  overflow:hidden;
}
.lab-card::before{
  content:'';position:absolute;top:0;left:0;
  width:100%;height:4px;
  background:var(--teal);
  transform:scaleX(0);transform-origin:left;
  transition:transform .3s;
}
.lab-card:hover{
  transform:translateY(-6px);
  box-shadow:0 16px 40px rgba(11,31,58,.12);
  color:inherit;
}
.lab-card:hover::before{transform:scaleX(1)}
.lab-card-tag{
  font-size:11px;font-weight:700;color:var(--teal);
  letter-spacing:1.5px;margin-bottom:12px;
}
.lab-card-title{
  font-size:20px;font-weight:800;color:var(--navy);
  margin-bottom:12px;letter-spacing:-.3px;
}
.lab-card-quote{
  font-size:14px;color:var(--text);
  font-weight:600;margin-bottom:8px;
}
.lab-card-desc{
  font-size:13px;color:var(--muted);
  line-height:1.7;margin-bottom:20px;flex-grow:1;
}
.lab-card-arrow{
  font-size:13px;color:var(--teal);
  font-weight:700;
}

/* ====== Stats（数字カード） ====== */
.stats-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.stat-card{
  background:var(--bg);
  padding:36px 28px;
  border-radius:12px;
  border:1px solid var(--border);
  transition:transform .2s;
}
.stat-card:hover{transform:translateY(-4px)}
.stat-num{
  font-size:54px;font-weight:900;color:var(--navy);
  line-height:1;margin-bottom:12px;letter-spacing:-1px;
}
.stat-num span{color:var(--teal);font-size:36px}
.stat-label{
  font-size:13px;color:var(--muted);font-weight:600;
  margin-bottom:14px;text-transform:uppercase;letter-spacing:1px;
}
.stat-desc{font-size:14px;color:var(--text);line-height:1.7}

/* ====== Pain Points ====== */
.pain-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.pain-card{
  background:#fff;padding:32px;border-radius:10px;
  border-left:4px solid var(--orange);
  box-shadow:0 1px 4px rgba(0,0,0,.04);
}
.pain-card-title{
  font-size:18px;font-weight:700;color:var(--navy);
  margin-bottom:18px;
}
.pain-list{list-style:none}
.pain-list li{
  padding:8px 0;padding-left:26px;position:relative;
  font-size:15px;color:var(--text);
}
.pain-list li::before{
  content:'✓';position:absolute;left:0;top:8px;
  color:var(--orange);font-weight:bold;
}

/* ====== Flow Steps ====== */
.flow-grid{
  display:grid;grid-template-columns:repeat(5,1fr);gap:16px;
  position:relative;
}
.flow-step{
  background:#fff;padding:28px 20px;
  border-radius:10px;border:1px solid var(--border);
  text-align:center;position:relative;
}
.flow-num{
  width:36px;height:36px;border-radius:50%;
  background:var(--teal);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:15px;margin:0 auto 14px;
}
.flow-time{
  font-size:11px;color:var(--muted);
  text-transform:uppercase;letter-spacing:1px;margin-bottom:8px;
}
.flow-title{
  font-size:15px;font-weight:700;color:var(--navy);
  margin-bottom:8px;line-height:1.4;
}
.flow-desc{
  font-size:13px;color:var(--muted);line-height:1.6;
}

/* ====== Audience Card ====== */
.audience-card{
  background:#fff;padding:40px;
  border-radius:12px;border:1px solid var(--border);
  max-width:900px;
}
.audience-row{
  display:flex;gap:20px;align-items:flex-start;
  padding:16px 0;border-bottom:1px solid var(--border);
}
.audience-row:last-child{border-bottom:none}
.audience-label{
  font-size:13px;font-weight:700;color:var(--teal);
  min-width:140px;letter-spacing:.5px;text-transform:uppercase;
}
.audience-text{font-size:15px;color:var(--text);line-height:1.7;flex:1}

/* ====== FAQ ====== */
.faq-list{max-width:900px}
.faq-item{
  background:#fff;padding:24px 28px;
  border-radius:8px;margin-bottom:14px;
  border:1px solid var(--border);
}
.faq-q{
  font-size:17px;font-weight:700;color:var(--navy);
  margin-bottom:12px;padding-left:32px;position:relative;
}
.faq-q::before{
  content:'Q.';position:absolute;left:0;
  color:var(--teal);font-weight:800;
}
.faq-a{
  font-size:15px;color:var(--text);line-height:1.8;
  padding-left:32px;position:relative;
}
.faq-a::before{
  content:'A.';position:absolute;left:0;
  color:var(--muted);font-weight:700;
}

/* ====== Form ====== */
.form-wrap{
  max-width:640px;margin:48px auto 0;
  background:#fff;padding:48px;border-radius:12px;
  color:var(--text);
  box-shadow:0 20px 60px rgba(0,0,0,.15);
}
.form-row{margin-bottom:20px}
.form-row label{
  display:block;font-size:13px;font-weight:600;
  color:var(--text);margin-bottom:8px;
}
.form-row label .req{color:var(--orange);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-size:15px;font-family:inherit;
  transition:border-color .2s;background:#fff;
}
.form-row input:focus,.form-row select:focus,.form-row textarea:focus{
  outline:none;border-color:var(--teal);
  box-shadow:0 0 0 3px rgba(13,148,136,.1);
}
.form-row textarea{min-height:100px;resize:vertical}
.form-radio-group{display:flex;flex-direction:column;gap:8px}
.form-radio{
  display:flex;align-items:center;gap:10px;
  padding:12px;border:1px solid var(--border);
  border-radius:6px;cursor:pointer;transition:all .2s;
}
.form-radio:hover{border-color:var(--teal);background:rgba(13,148,136,.03)}
.form-radio input{width:auto;margin:0}
.form-radio span{font-size:14px}
.form-submit{
  background:var(--teal);color:#fff;border:none;
  padding:16px;border-radius:6px;
  font-size:16px;font-weight:700;cursor:pointer;
  width:100%;transition:opacity .2s;font-family:inherit;
}
.form-submit:hover{opacity:.9}
.form-note{
  font-size:12px;color:var(--muted);
  margin-top:14px;text-align:center;line-height:1.6;
}
.form-success{
  display:none;background:#ECFDF5;
  border:1px solid #10B981;color:#065F46;
  padding:20px;border-radius:8px;
  margin-bottom:20px;font-size:15px;
}
.form-success.show{display:block}

/* ====== CTA Section ====== */
.cta-section{
  background:linear-gradient(135deg,var(--navy) 0%,var(--navy2) 100%);
  color:#fff;padding:100px 0;
  position:relative;overflow:hidden;
}
.cta-section::before{
  content:'';position:absolute;bottom:-200px;left:-200px;
  width:500px;height:500px;
  background:radial-gradient(circle,rgba(13,148,136,.15) 0%,transparent 70%);
  border-radius:50%;
}
.cta-content{position:relative;z-index:1}
.cta-section .section-title{color:#fff;font-size:42px}
.cta-section .section-sub{color:rgba(255,255,255,.85);font-size:18px}
.cta-trust{
  display:flex;justify-content:center;gap:24px;
  flex-wrap:wrap;margin-top:32px;
  font-size:13px;color:rgba(255,255,255,.7);
}
.cta-trust div{display:flex;align-items:center;gap:6px}
.cta-trust div::before{content:'●';color:var(--teal);font-size:8px}

/* ====== Footer ====== */
.site-footer{
  background:#050D1A;color:rgba(255,255,255,.6);
  padding:48px 0 32px;font-size:14px;
}
.footer-content{
  display:grid;grid-template-columns:2fr 1fr 1fr;
  gap:32px;padding-bottom:32px;
  border-bottom:1px solid rgba(255,255,255,.1);
}
.footer-logo{
  font-size:18px;font-weight:700;color:#fff;
  margin-bottom:12px;
}
.footer-desc{
  color:rgba(255,255,255,.5);line-height:1.7;
  max-width:400px;font-size:13px;
}
.footer-section h4{
  color:#fff;font-size:14px;
  margin-bottom:16px;font-weight:600;
}
.footer-section a{
  color:rgba(255,255,255,.6);text-decoration:none;
  display:block;padding:4px 0;font-size:13px;
  transition:color .2s;
}
.footer-section a:hover{color:var(--teal)}
.footer-bottom{
  padding-top:24px;text-align:center;
  font-size:12px;color:rgba(255,255,255,.4);
}

/* ====== Tables ====== */
.compare-table{
  width:100%;border-collapse:collapse;
  background:#fff;border-radius:12px;overflow:hidden;
  border:1px solid var(--border);
  box-shadow:0 4px 12px rgba(0,0,0,.04);
}
.compare-table th,.compare-table td{
  padding:16px 20px;text-align:left;
  border-bottom:1px solid var(--border);
  font-size:14px;
}
.compare-table th{
  background:var(--bg);font-weight:700;
  color:var(--navy);font-size:13px;
}
.compare-table tr:last-child td{border-bottom:none}
.compare-table .highlight{background:#F0FDFA;font-weight:600;color:var(--teal2)}

/* ====== Section variants ====== */
.section-bg-white{background:#fff}
.section-bg-gray{background:var(--bg)}
.section-bg-navy{background:var(--navy);color:#fff}
.section-bg-navy .section-title{color:#fff}
.section-bg-navy .section-sub{color:rgba(255,255,255,.7)}

/* ====== Responsive ====== */
@media (max-width:768px){
  .hero{padding:120px 0 60px}
  .hero h1{font-size:32px}
  .hero-sub{font-size:16px}
  section{padding:60px 0}
  .section-title{font-size:26px}
  .stats-grid,.pain-grid,.card-grid-3,.card-grid-4,.card-grid-2,
  .labs-grid,.flow-grid{grid-template-columns:1fr}
  .footer-content{grid-template-columns:1fr}
  .nav-links{display:none}
  .menu-toggle{display:block}
  .nav-cta{padding:8px 14px;font-size:13px}
  .form-wrap{padding:28px 20px}
  .audience-row{flex-direction:column;gap:6px}
  .audience-label{min-width:auto}
  .stat-num{font-size:42px}
  .logo-text small{display:none}
  .compare-table{font-size:13px}
  .compare-table th,.compare-table td{padding:12px 14px}
  .cta-section .section-title{font-size:30px}
}