:root{
  --bg: #f6fbff;
  --surface: #ffffff;
  --text: #0f172a;
  --muted: #475569;
  --line: rgba(15,23,42,.10);
  --primary: #0ea5e9;   /* sky */
  --primary2:#14b8a6;   /* teal */
  --accent: #2563eb;    /* blue */
  --shadow: 0 10px 30px rgba(2, 8, 23, .08);
  --radius: 18px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family: "Hiragino Kaku Gothic ProN","Yu Gothic","Noto Sans JP",system-ui,sans-serif;
  color:var(--text);
  background: linear-gradient(180deg, var(--bg), #ffffff 55%, #ffffff);
  line-height:1.8;
}

a{color:inherit}
.container{
  max-width: 1040px;
  margin:0 auto;
  padding:0 20px;
}

/* Header */
.site-header{
  position: sticky;
  top:0;
  z-index: 10;
  backdrop-filter: blur(10px);
  background: rgba(255,255,255,.82);
  border-bottom: 1px solid var(--line);
}
.site-header .container{
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding:14px 20px;
  gap:16px;
}
.logo{
  margin:0;
  font-size:18px;
  letter-spacing:.02em;
}
.logo a{
  text-decoration:none;
  display:flex;
  align-items:center;
  gap:10px;
}
.brand-mark{
  width:34px;height:34px;border-radius:12px;
  background: linear-gradient(135deg, var(--primary), var(--primary2));
  box-shadow: 0 8px 18px rgba(14,165,233,.25);
}
.nav{
  display:flex;
  align-items:center;
  gap:18px;
  flex-wrap:wrap;
  justify-content:flex-end;
}
.nav a{
  text-decoration:none;
  color:var(--muted);
  font-size:14px;
}
.nav a:hover{color:var(--text)}
.nav .nav-cta{
  padding:10px 14px;
  border-radius: 999px;
  color:white;
  background: linear-gradient(135deg, var(--primary), var(--primary2));
  box-shadow: 0 10px 20px rgba(14,165,233,.18);
}

/* Hero */
.hero{
  padding: 70px 0 30px;
}
.hero-grid{
  display:grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 28px;
  align-items:center;
}
.kicker{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding: 6px 12px;
  border-radius:999px;
  background: rgba(14,165,233,.10);
  border:1px solid rgba(14,165,233,.18);
  color:#0369a1;
  font-size:13px;
}
.hero h2{
  font-size: 40px;
  line-height:1.2;
  margin:14px 0 12px;
  letter-spacing:.01em;
}
.hero p{
  margin:0 0 18px;
  color:var(--muted);
  font-size:15px;
}
.hero-actions{
  display:flex;
  gap:12px;
  flex-wrap:wrap;
  margin-top: 10px;
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding: 12px 16px;
  border-radius: 999px;
  text-decoration:none;
  font-weight:700;
  font-size:14px;
  border: 1px solid transparent;
}
.btn-primary{
  color:#fff;
  background: linear-gradient(135deg, var(--primary), var(--primary2));
  box-shadow: 0 12px 25px rgba(14,165,233,.20);
}
.btn-ghost{
  color:var(--text);
  background: rgba(255,255,255,.70);
  border-color: var(--line);
}
.hero-card{
  border-radius: var(--radius);
  background: radial-gradient(120% 120% at 0% 0%, rgba(14,165,233,.14), rgba(20,184,166,.10) 55%, rgba(255,255,255,.90));
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  padding: 22px;
}
.hero-metrics{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap:12px;
  margin-top: 14px;
}
.metric{
  background: rgba(255,255,255,.72);
  border:1px solid var(--line);
  border-radius: 14px;
  padding: 12px 12px;
}
.metric .num{font-weight:900; font-size:18px}
.metric .cap{font-size:12px; color:var(--muted)}

/* Sections */
.section{
  padding: 56px 0;
}
.section-title{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap: 18px;
  margin-bottom: 18px;
}
.section h3{
  margin:0;
  font-size: 22px;
}
.section .lead{
  margin:0;
  color: var(--muted);
  font-size: 14px;
}

/* Cards */
.grid-3{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.card{
  background: rgba(255,255,255,.85);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 12px 28px rgba(2,8,23,.06);
  padding: 18px;
}
.card h4{
  margin: 10px 0 8px;
  font-size: 16px;
}
.card p{
  margin:0;
  color: var(--muted);
  font-size: 14px;
}
.icon{
  width: 40px;
  height: 40px;
  border-radius: 14px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  background: rgba(14,165,233,.12);
  border: 1px solid rgba(14,165,233,.18);
}
.icon svg{width:22px;height:22px; fill:#0284c7}

/* Steps */
.steps{
  display:grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}
.step{
  background: rgba(255,255,255,.85);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
  position:relative;
  overflow:hidden;
}
.step::before{
  content:"";
  position:absolute;
  inset:auto -40px -60px auto;
  width:120px;height:120px;
  background: radial-gradient(circle at 30% 30%, rgba(14,165,233,.25), rgba(20,184,166,.18), transparent 70%);
  transform: rotate(20deg);
}
.badge{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:30px;height:30px;
  border-radius: 10px;
  background: rgba(20,184,166,.12);
  border:1px solid rgba(20,184,166,.18);
  color:#0f766e;
  font-weight:900;
  margin-bottom: 10px;
}

/* Tables */
.table{
  width:100%;
  border-collapse: collapse;
  background: rgba(255,255,255,.85);
  border:1px solid var(--line);
  border-radius: var(--radius);
  overflow:hidden;
  box-shadow: 0 12px 28px rgba(2,8,23,.06);
}
.table th, .table td{
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
  font-size:14px;
}
.table th{
  width: 180px;
  color: var(--muted);
  text-align:left;
  background: rgba(2,8,23,.02);
}
.table tr:last-child th, .table tr:last-child td{border-bottom:none}

/* Contact form */
.contact-form{
  background: rgba(255,255,255,.85);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 12px 28px rgba(2,8,23,.06);
  padding: 18px;
}
.contact-form label{display:block; margin-bottom: 14px; font-size: 14px}
.contact-form input, .contact-form textarea{
  width:100%;
  padding: 12px 12px;
  border-radius: 12px;
  border: 1px solid var(--line);
  font-size: 14px;
  margin-top: 8px;
  background: rgba(255,255,255,.9);
}
.contact-form button{
  width: 100%;
  padding: 12px 14px;
  border:none;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--primary), var(--primary2));
  color:#fff;
  font-weight:900;
  cursor:pointer;
}
.required{color:#ef4444; margin-left:4px}
.form-note{color:var(--muted); font-size:13px}

/* Footer */
.site-footer{
  border-top:1px solid var(--line);
  background: rgba(255,255,255,.7);
  padding: 26px 0;
  color: var(--muted);
  font-size: 13px;
}
.footer-row{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap: 12px;
  flex-wrap:wrap;
}
.site-footer a{color: var(--muted); text-decoration:none}
.site-footer a:hover{color: var(--text)}

/* Utility */
.mt-24{margin-top:24px}
.center{ text-align:center }
.pill{
  display:inline-flex;
  gap:8px;
  flex-wrap:wrap;
}
.pill span{
  display:inline-flex;
  align-items:center;
  padding: 6px 10px;
  border-radius:999px;
  border:1px solid var(--line);
  background: rgba(255,255,255,.75);
  font-size:12px;
  color: var(--muted);
}

/* Responsive */
@media (max-width: 900px){
  .hero-grid{grid-template-columns: 1fr; }
  .hero h2{font-size: 34px;}
  .grid-3{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr; }
  .table th{width: 140px;}
}

/* ===== Hero背景 強化 ===== */
.hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(
    135deg,
    #e0f7fa 0%,
    #f5feff 50%,
    #cceff5 100%
  );
}

/* 丸い装飾① */
.hero::before {
  content: "";
  position: absolute;
  top: -80px;
  left: -80px;
  width: 280px;
  height: 280px;
  background: rgba(0, 180, 200, 0.15);
  border-radius: 50%;
  z-index: 0;
}

/* 丸い装飾② */
.hero::after {
  content: "";
  position: absolute;
  bottom: -120px;
  right: -120px;
  width: 350px;
  height: 350px;
  background: rgba(0, 200, 220, 0.12);
  border-radius: 50%;
  z-index: 0;
}

/* 中身を前面に出す */
.hero * {
  position: relative;
  z-index: 1;
}

/* =========================
   全体ベース調整
========================= */

body {
  background: #f7fcfd;
}

/* セクション共通 */
section {
  padding: 80px 20px;
}

.section-inner {
  max-width: 1100px;
  margin: 0 auto;
}

/* 見出し共通 */
section h2 {
  text-align: center;
  font-size: 32px;
  margin-bottom: 50px;
  color: #036b77;
  position: relative;
}

section h2::after {
  content: "";
  display: block;
  width: 60px;
  height: 3px;
  background: #00bcd4;
  margin: 15px auto 0;
  border-radius: 2px;
}

/* =========================
   サービス・カード系
========================= */

.service-list,
.card-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 30px;
}

.service-item,
.card-item {
  background: #fff;
  padding: 30px;
  border-radius: 16px;
  box-shadow: 0 8px 25px rgba(0,0,0,0.06);
  transition: 0.3s;
}

.service-item:hover,
.card-item:hover {
  transform: translateY(-6px);
  box-shadow: 0 15px 35px rgba(0,0,0,0.12);
}

.service-item h3,
.card-item h3 {
  color: #007c8a;
  margin-bottom: 15px;
}

/* =========================
   ABOUT / 会社概要
========================= */

.about {
  background: linear-gradient(
    180deg,
    #ffffff 0%,
    #f0fbfd 100%
  );
}

.about-box {
  background: #fff;
  padding: 40px;
  border-radius: 20px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.05);
}

/* =========================
   PROCESS / 流れ系
========================= */

.process {
  background: #eaf8fb;
}

.process-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px,1fr));
  gap: 25px;
}

.process-item {
  background: #fff;
  padding: 25px;
  border-radius: 14px;
  text-align: center;
  box-shadow: 0 6px 18px rgba(0,0,0,0.06);
}

.process-item span {
  display: inline-block;
  background: #00bcd4;
  color: #fff;
  width: 36px;
  height: 36px;
  line-height: 36px;
  border-radius: 50%;
  margin-bottom: 15px;
}

/* =========================
   CONTACT
========================= */

.contact {
  background: linear-gradient(
    135deg,
    #dff6fa,
    #ffffff
  );
}

.contact-box {
  max-width: 700px;
  margin: 0 auto;
  background: #fff;
  padding: 50px 40px;
  border-radius: 20px;
  box-shadow: 0 12px 35px rgba(0,0,0,0.08);
}

/* フォーム */
form input,
form textarea {
  width: 100%;
  padding: 14px;
  margin-bottom: 18px;
  border: 1px solid #cce5ea;
  border-radius: 8px;
  font-size: 15px;
}

form input:focus,
form textarea:focus {
  outline: none;
  border-color: #00bcd4;
}

/* ボタン */
form button,
.btn {
  background: linear-gradient(135deg,#00bcd4,#0097a7);
  color: #fff;
  border: none;
  padding: 14px 36px;
  border-radius: 30px;
  font-size: 15px;
  cursor: pointer;
  transition: 0.3s;
}

form button:hover,
.btn:hover {
  opacity: 0.85;
}

/* =========================
   FOOTER
========================= */

footer {
  background: #036b77;
  color: #fff;
  padding: 40px 20px;
  text-align: center;
}

footer a {
  color: #c9f3f8;
}