@charset "UTF-8";

/* ===== 基本設定 ===== */
:root{
  --ink:#16202b;          /* 本文の色 */
  --ink-sub:#5a6672;      /* 補足の色 */
  --line:#dfe4e9;         /* 罫線 */
  --paper:#ffffff;
  --alt:#f4f7f9;          /* 背景を変えるセクション */
  --accent:#0f5c8c;       /* 主役の色（青） */
  --accent-dark:#0b4468;
  --accent-pale:#e8f1f7;
  --warm:#c2703a;         /* 差し色（バッジ用） */
  --radius:10px;
  --shadow:0 2px 14px rgba(22,32,43,.08);
  --gothic:"Hiragino Sans","Hiragino Kaku Gothic ProN","Yu Gothic UI","Yu Gothic","Noto Sans JP","Meiryo",sans-serif;
}

*{ box-sizing:border-box; }

html{ scroll-behavior:smooth; }

body{
  margin:0;
  font-family:var(--gothic);
  color:var(--ink);
  background:var(--paper);
  line-height:1.85;
  font-size:16px;
  font-feature-settings:"palt";
  -webkit-text-size-adjust:100%;
}

img{ max-width:100%; height:auto; display:block; }
a{ color:var(--accent); }
h1,h2,h3{ line-height:1.45; margin:0; font-weight:700; }
p{ margin:0; }
ul,ol{ margin:0; padding:0; list-style:none; }

.wrap{ width:100%; max-width:1080px; margin:0 auto; padding:0 20px; }
.wrap-narrow{ max-width:680px; }

section[id]{ scroll-margin-top:74px; }

/* ===== ヘッダー ===== */
.site-header{
  position:sticky; top:0; z-index:50;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(6px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:flex; align-items:center; gap:16px;
  height:58px;
}
.logo{
  font-size:20px; font-weight:700; letter-spacing:.04em;
  color:var(--ink); text-decoration:none; flex:none;
}
.logo-sub{ color:var(--accent); font-size:.62em; margin-left:2px; letter-spacing:.12em; }

.nav{ margin-left:auto; overflow-x:auto; -webkit-overflow-scrolling:touch; }
.nav::-webkit-scrollbar{ display:none; }
.nav ul{ display:flex; gap:4px; align-items:center; white-space:nowrap; }
.nav a{
  display:block; padding:8px 11px;
  font-size:14px; color:var(--ink); text-decoration:none;
  border-radius:6px;
}
.nav a:hover{ background:var(--alt); }
.nav .nav-cta{
  background:var(--accent); color:#fff; font-weight:700;
  padding:8px 16px; margin-left:6px;
}
.nav .nav-cta:hover{ background:var(--accent-dark); }

/* ===== ヒーロー ===== */
.hero{
  padding:64px 0 56px;
  background:
    radial-gradient(1100px 420px at 78% -12%, var(--accent-pale) 0%, rgba(232,241,247,0) 62%),
    var(--paper);
  border-bottom:1px solid var(--line);
}
.hero-eyebrow{
  display:inline-block;
  font-size:12px; letter-spacing:.16em; font-weight:700;
  color:var(--accent);
  background:var(--accent-pale);
  padding:5px 12px; border-radius:999px;
  margin-bottom:20px;
}
.hero-title{
  font-size:clamp(27px,6.2vw,44px);
  letter-spacing:.01em;
  margin-bottom:22px;
}
.hero-lead{ color:var(--ink-sub); font-size:15.5px; max-width:36em; }
.hero-lead strong{ color:var(--ink); }

.hero-cta{ display:flex; flex-wrap:wrap; gap:12px; margin-top:30px; }
.btn{
  display:inline-block; text-decoration:none; text-align:center;
  padding:15px 30px; border-radius:var(--radius);
  font-weight:700; font-size:15.5px;
  border:2px solid transparent;
  transition:background .15s, color .15s;
}
.btn-main{ background:var(--accent); color:#fff; }
.btn-main:hover{ background:var(--accent-dark); }
.btn-sub{ background:transparent; color:var(--accent); border-color:var(--accent); }
.btn-sub:hover{ background:var(--accent-pale); }

.hero-facts{
  display:flex; flex-wrap:wrap; gap:14px 36px;
  margin-top:40px; padding-top:26px;
  border-top:1px solid var(--line);
}
.hero-facts li{ display:flex; flex-direction:column; }
.fact-num{
  font-size:26px; font-weight:700; line-height:1.3;
  color:var(--accent); letter-spacing:.01em;
}
.fact-num small{ font-size:14px; margin-left:2px; }
.fact-label{ font-size:12.5px; color:var(--ink-sub); }

/* ===== セクション共通 ===== */
.section{ padding:66px 0; }
.section-alt{ background:var(--alt); }
.sec-eyebrow{
  font-size:11.5px; letter-spacing:.2em; font-weight:700;
  color:var(--accent); margin-bottom:8px;
}
.sec-title{ font-size:clamp(23px,4.6vw,31px); margin-bottom:16px; }
.sec-lead{ color:var(--ink-sub); font-size:15px; margin-bottom:34px; }
.sec-lead strong{ color:var(--ink); }

/* ===== 実績 ===== */
.works{ display:grid; gap:26px; }
.work{
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--radius);
  overflow:hidden;
  box-shadow:var(--shadow);
}
.work-thumb{ display:block; background:var(--alt); }
.work-thumb img{
  width:100%; aspect-ratio:800/420; object-fit:cover;
  transition:transform .3s;
}
.work-thumb:hover img{ transform:scale(1.02); }
.work-body{ padding:22px 20px 24px; }
.work-cat{ font-size:12.5px; color:var(--ink-sub); letter-spacing:.04em; }
.work-name{ font-size:20px; margin:2px 0 12px; }
.work-desc{ font-size:14.5px; color:var(--ink-sub); }
.work-desc strong{ color:var(--ink); }

.tags{ display:flex; flex-wrap:wrap; gap:7px; margin:16px 0 18px; }
.tags li{
  font-size:12px; font-weight:700;
  color:var(--accent-dark); background:var(--accent-pale);
  padding:4px 10px; border-radius:999px;
}
.work-link{
  display:inline-block; font-weight:700; font-size:14.5px;
  text-decoration:none;
  border-bottom:2px solid var(--accent); padding-bottom:1px;
}
.work-link::after{ content:" →"; }
.work-note{
  font-size:11.5px; color:var(--ink-sub);
  margin-top:16px; padding-top:12px;
  border-top:1px dashed var(--line);
  line-height:1.7;
}
.work-note strong{ color:var(--ink); }

/* ===== できること ===== */
.cards{ display:grid; gap:16px; }
.card{
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:22px 20px;
}
.card h3{
  font-size:16.5px; margin-bottom:9px;
  padding-left:13px; position:relative;
}
.card h3::before{
  content:""; position:absolute; left:0; top:.34em;
  width:4px; height:1.05em; border-radius:2px; background:var(--accent);
}
.card p{ font-size:14px; color:var(--ink-sub); }
.card p strong{ color:var(--ink); }

/* ===== 料金 ===== */
.plans{ display:grid; gap:18px; }
.plan{
  position:relative;
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:26px 22px;
  display:flex; flex-direction:column;
}
.plan-rec{
  border:2px solid var(--accent);
  box-shadow:var(--shadow);
}
.plan-badge{
  position:absolute; top:-12px; left:22px;
  background:var(--warm); color:#fff;
  font-size:11.5px; font-weight:700; letter-spacing:.04em;
  padding:4px 12px; border-radius:999px;
}
.plan-name{ font-size:15px; letter-spacing:.08em; color:var(--ink-sub); }
.plan-price{
  font-size:34px; font-weight:700; line-height:1.3;
  color:var(--accent); margin:4px 0 6px;
}
.plan-price small{ font-size:16px; margin-left:2px; }
.plan-for{ font-size:13px; color:var(--ink-sub); margin-bottom:18px; }
.plan-list{ display:grid; gap:9px; }
.plan-list li{
  font-size:14px; padding-left:24px; position:relative;
}
.plan-list li::before{
  content:""; position:absolute; left:4px; top:.52em;
  width:9px; height:5px;
  border-left:2px solid var(--accent); border-bottom:2px solid var(--accent);
  transform:rotate(-45deg);
}

.maint{
  margin-top:24px;
  background:var(--accent-pale);
  border-radius:var(--radius);
  padding:24px 22px;
}
.maint-head{ display:flex; flex-wrap:wrap; align-items:baseline; gap:6px 16px; margin-bottom:10px; }
.maint-head h3{ font-size:18px; }
.maint-price{ font-size:24px; font-weight:700; color:var(--accent); }
.maint-price small{ font-size:14px; }
.maint-desc{ font-size:14px; color:var(--ink-sub); }
.maint-desc strong{ color:var(--ink); }

.notes{ margin-top:22px; display:grid; gap:7px; }
.notes li{
  font-size:12.5px; color:var(--ink-sub);
  padding-left:15px; position:relative; line-height:1.75;
}
.notes li::before{ content:"※"; position:absolute; left:0; }
.notes strong{ color:var(--ink); }

/* ===== 進め方 ===== */
.flow{ display:grid; gap:0; }
.flow li{
  display:flex; gap:18px;
  padding-bottom:28px; position:relative;
}
.flow li:not(:last-child)::before{
  content:""; position:absolute;
  left:19px; top:44px; bottom:6px;
  width:2px; background:var(--line);
}
.flow-num{
  flex:none;
  width:40px; height:40px; border-radius:50%;
  background:var(--accent); color:#fff;
  display:grid; place-items:center;
  font-weight:700; font-size:17px;
  position:relative; z-index:1;
}
.flow h3{ font-size:17px; margin-bottom:6px; padding-top:6px; }
.flow p{ font-size:14px; color:var(--ink-sub); }
.flow p strong{ color:var(--ink); }

/* ===== FAQ ===== */
.faq{ display:grid; gap:12px; }
.faq details{
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--radius);
  overflow:hidden;
}
.faq summary{
  list-style:none; cursor:pointer;
  padding:17px 46px 17px 18px;
  font-weight:700; font-size:15px;
  position:relative;
}
.faq summary::-webkit-details-marker{ display:none; }
.faq summary::after{
  content:""; position:absolute; right:20px; top:24px;
  width:9px; height:9px;
  border-right:2px solid var(--accent); border-bottom:2px solid var(--accent);
  transform:rotate(45deg); transition:transform .2s;
}
.faq details[open] summary::after{ transform:rotate(-135deg); top:28px; }
.faq details p{
  padding:0 18px 18px;
  font-size:14px; color:var(--ink-sub);
}
.faq details p strong{ color:var(--ink); }

/* ===== お問い合わせ ===== */
.section-contact{ background:var(--alt); }
.contact-form{ display:grid; gap:18px; }
.field{ display:grid; gap:7px; }
.field label{ font-size:14px; font-weight:700; }
.req{
  font-size:11px; font-weight:700; color:#fff;
  background:var(--warm); padding:2px 7px; border-radius:4px;
  margin-left:6px; vertical-align:1.5px;
}
.field input,
.field select,
.field textarea{
  width:100%;
  font-family:inherit; font-size:16px; color:var(--ink);
  background:var(--paper);
  border:1px solid var(--line); border-radius:8px;
  padding:13px 14px;
  line-height:1.6;
}
.field textarea{ resize:vertical; }
.field input:focus,
.field select:focus,
.field textarea:focus{
  outline:none;
  border-color:var(--accent);
  box-shadow:0 0 0 3px var(--accent-pale);
}
.field input::placeholder,
.field textarea::placeholder{ color:#a7b1bb; }

.gotcha{ position:absolute; left:-9999px; opacity:0; height:0; }

.btn-submit{
  width:100%; border:none; cursor:pointer;
  font-family:inherit; margin-top:4px;
}
.btn-submit:disabled{ background:#9fb3c2; cursor:default; }

.form-status{ font-size:14px; font-weight:700; min-height:1.2em; }
.form-status.ok{ color:#1a7a4c; }
.form-status.ng{ color:#b3261e; }
.form-privacy{ font-size:12px; color:var(--ink-sub); }

/* ===== フッター ===== */
.site-footer{
  background:var(--ink); color:#c6cfd8;
  padding:44px 0 32px; text-align:center;
}
.footer-logo{ font-size:20px; font-weight:700; color:#fff; letter-spacing:.04em; }
.footer-logo .logo-sub{ color:#6fb0d8; }
.footer-desc{ font-size:13px; margin-top:6px; }
.footer-nav{
  display:flex; flex-wrap:wrap; justify-content:center;
  gap:8px 22px; margin:24px 0 26px;
}
.footer-nav a{ color:#c6cfd8; font-size:13.5px; text-decoration:none; }
.footer-nav a:hover{ color:#fff; text-decoration:underline; }
.copyright{ font-size:12px; color:#8b98a5; }

/* ===== タブレット以上 ===== */
@media (min-width:700px){
  body{ font-size:16.5px; }
  .hero{ padding:88px 0 74px; }
  .hero-facts{ gap:14px 56px; }
  .fact-num{ font-size:32px; }
  .section{ padding:88px 0; }
  .cards{ grid-template-columns:repeat(2,1fr); }
  .work{ display:grid; grid-template-columns:340px 1fr; }
  .work-thumb img{ height:100%; aspect-ratio:auto; min-height:220px; }
  .work-body{ padding:26px 26px 28px; }
  .plans{ grid-template-columns:repeat(3,1fr); gap:20px; }
  .btn{ font-size:16px; }
}

@media (min-width:1000px){
  .cards{ grid-template-columns:repeat(3,1fr); }
  .work{ grid-template-columns:420px 1fr; }
}

/* ===== 動きを減らす設定への配慮 ===== */
@media (prefers-reduced-motion:reduce){
  html{ scroll-behavior:auto; }
  *{ transition:none !important; }
}