/* ===========================================================
   ミズハ設備株式会社 コーポレートサイト
   キーカラー: 水色 #3FB6D8 / サブ: #57C9B5
   フォント: Zen Maru Gothic(見出し) + Noto Sans JP(本文)
   =========================================================== */

:root {
  --c-primary: #3FB6D8;
  --c-primary-d: #2A99BC;
  --c-sub: #57C9B5;
  --c-ink: #244a57;
  --c-ink-soft: #4a6a74;
  --c-bg: #ffffff;
  --c-bg-tint: #eef9fc;
  --c-line: #e2eef2;
  --c-white: #ffffff;
  --radius: 18px;
  --radius-s: 12px;
  --shadow: 0 12px 30px -12px rgba(37, 110, 130, 0.25);
  --shadow-soft: 0 6px 18px -8px rgba(37, 110, 130, 0.22);
  --maxw: 1080px;
  --font-head: "Zen Maru Gothic", "Noto Sans JP", sans-serif;
  --font-body: "Noto Sans JP", sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--c-ink);
  background: var(--c-bg);
  line-height: 1.8;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

img, svg { max-width: 100%; }

a { color: var(--c-primary-d); text-decoration: none; }
a:hover { opacity: .85; }

h1, h2, h3, h4 { font-family: var(--font-head); line-height: 1.4; font-weight: 700; }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }

/* ===== Buttons ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: .4em;
  padding: 14px 28px;
  border-radius: 999px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1rem;
  transition: transform .15s ease, box-shadow .2s ease, opacity .2s;
  cursor: pointer;
  border: 2px solid transparent;
  text-align: center;
}
.btn:hover { transform: translateY(-2px); opacity: 1; }
.btn-primary { background: linear-gradient(120deg, var(--c-primary), var(--c-sub)); color: #fff; box-shadow: var(--shadow); }
.btn-ghost { background: #fff; color: var(--c-primary-d); border-color: var(--c-primary); }
.btn-white { background: #fff; color: var(--c-primary-d); box-shadow: var(--shadow-soft); }
.btn-outline-white { background: transparent; color: #fff; border-color: rgba(255,255,255,.7); }

/* ===== Header ===== */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--c-line);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.logo { display: flex; align-items: center; gap: 10px; }
.logo-mark { display: inline-flex; }
.logo-text {
  font-family: var(--font-head); font-weight: 700; font-size: 1.25rem;
  color: var(--c-ink); letter-spacing: .06em; line-height: 1.1;
  display: flex; flex-direction: column;
}
.logo-text small { font-size: .62rem; font-weight: 500; letter-spacing: .04em; color: var(--c-ink-soft); }

.global-nav ul { display: flex; align-items: center; gap: 26px; list-style: none; margin: 0; padding: 0; }
.global-nav a { font-family: var(--font-head); font-weight: 500; color: var(--c-ink); font-size: .98rem; }
.nav-cta a {
  background: linear-gradient(120deg, var(--c-primary), var(--c-sub));
  color: #fff !important; padding: 10px 20px; border-radius: 999px;
  box-shadow: var(--shadow-soft);
}

.nav-toggle { display: none; flex-direction: column; gap: 5px; width: 44px; height: 44px; border: 0; background: transparent; cursor: pointer; padding: 10px; }
.nav-toggle span { display: block; height: 2px; background: var(--c-ink); border-radius: 2px; transition: .25s; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== Hero ===== */
.hero {
  position: relative;
  background: linear-gradient(160deg, #d6f1f8 0%, #e9f9f5 60%, #f4fbfc 100%);
  padding: 76px 0 90px;
  overflow: hidden;
}
.hero-bg { position: absolute; inset: 0; pointer-events: none; }
.hero-bg .wave { position: absolute; bottom: -1px; left: 0; width: 100%; height: 90px; }
.hero-inner { position: relative; text-align: center; }
.hero-eyebrow { color: var(--c-primary-d); font-weight: 700; font-family: var(--font-head); margin: 0 0 14px; letter-spacing: .04em; }
.hero-title { font-size: clamp(1.9rem, 5.5vw, 3.1rem); color: var(--c-ink); margin: 0 0 20px; }
.hero-lead { font-size: clamp(1rem, 2.4vw, 1.15rem); color: var(--c-ink-soft); margin: 0 0 32px; }
.hero-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.hero-note { margin: 18px 0 0; font-size: .88rem; color: var(--c-ink-soft); }
.hero-note-sub { font-size: .76rem; color: var(--c-ink-soft); display: inline-block; margin-top: 4px; line-height: 1.6; }
.hero-emergency {
  display: inline-block;
  margin: 0 0 26px;
  background: linear-gradient(120deg, #ff8a5b, #ff6f61);
  color: #fff;
  font-family: var(--font-head);
  font-weight: 700;
  padding: 11px 24px;
  border-radius: 999px;
  box-shadow: 0 10px 24px -10px rgba(255, 111, 97, .65);
  font-size: clamp(.92rem, 2.6vw, 1.08rem);
  letter-spacing: .02em;
}
.hero-emergency::before { content: "🚨 "; }

/* ===== Sections ===== */
.section { padding: 72px 0; }
.section-tint { background: var(--c-bg-tint); }
.section-head { text-align: center; margin-bottom: 44px; }
.section-eyebrow { color: var(--c-sub); font-family: var(--font-head); font-weight: 700; letter-spacing: .14em; margin: 0 0 8px; font-size: .85rem; }
.section-title { font-size: clamp(1.5rem, 4vw, 2.1rem); color: var(--c-ink); margin: 0; }
.section-desc { color: var(--c-ink-soft); margin: 12px 0 0; }
.center-note { text-align: center; color: var(--c-ink-soft); font-size: .9rem; margin-top: 28px; }

/* ===== Cards ===== */
.cards-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.card {
  background: #fff; border-radius: var(--radius); padding: 34px 26px; text-align: center;
  box-shadow: var(--shadow-soft); border: 1px solid var(--c-line);
}
.card-icon { color: var(--c-primary); display: flex; justify-content: center; margin-bottom: 16px; }
.card h3 { font-size: 1.25rem; margin: 0 0 12px; color: var(--c-ink); }
.card p { margin: 0; color: var(--c-ink-soft); font-size: .95rem; }

.service-card {
  background: #fff; border-radius: var(--radius); padding: 32px 28px;
  box-shadow: var(--shadow-soft); border: 1px solid var(--c-line); position: relative; overflow: hidden;
}
.service-card::before { content: ""; position: absolute; top: 0; left: 0; width: 6px; height: 100%; background: linear-gradient(var(--c-primary), var(--c-sub)); }
.service-no { font-family: var(--font-head); font-weight: 700; color: var(--c-sub); font-size: 1.6rem; letter-spacing: .05em; }
.service-card h3 { font-size: 1.3rem; margin: 6px 0 12px; color: var(--c-ink); }
.service-card p { margin: 0; color: var(--c-ink-soft); font-size: .95rem; }

/* ===== Flow ===== */
.flow { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; counter-reset: none; }
.flow li { background: var(--c-bg-tint); border-radius: var(--radius); padding: 28px 20px; text-align: center; position: relative; }
.flow-no { display: inline-flex; align-items: center; justify-content: center; width: 44px; height: 44px; border-radius: 50%; background: linear-gradient(120deg, var(--c-primary), var(--c-sub)); color: #fff; font-family: var(--font-head); font-weight: 700; font-size: 1.2rem; margin-bottom: 12px; }
.flow h3 { font-size: 1.1rem; margin: 0 0 8px; color: var(--c-ink); }
.flow p { margin: 0; font-size: .88rem; color: var(--c-ink-soft); }

/* ===== CTA ===== */
.cta { background: linear-gradient(120deg, var(--c-primary), var(--c-sub)); color: #fff; padding: 66px 0; text-align: center; }
.cta h2 { font-size: clamp(1.4rem, 3.6vw, 2rem); margin: 0 0 12px; color: #fff; }
.cta p { margin: 0 0 28px; opacity: .95; }
.cta-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ===== Footer ===== */
.site-footer { background: #f4fafc; border-top: 1px solid var(--c-line); padding-top: 48px; }
.footer-inner { display: flex; justify-content: space-between; gap: 30px; flex-wrap: wrap; padding-bottom: 36px; }
.footer-brand .logo-text { font-size: 1.3rem; }
.footer-brand p { color: var(--c-ink-soft); font-size: .9rem; margin: 12px 0 0; }
.footer-nav { display: flex; flex-wrap: wrap; gap: 10px 24px; align-content: start; }
.footer-nav a { color: var(--c-ink); font-size: .92rem; }
.footer-copy { border-top: 1px solid var(--c-line); padding: 18px 0; font-size: .82rem; color: var(--c-ink-soft); }

/* ===== Page header (sub pages) ===== */
.page-hero { background: linear-gradient(160deg, #d6f1f8, #eef9fc); padding: 54px 0; text-align: center; }
.page-hero h1 { font-size: clamp(1.6rem, 4.5vw, 2.4rem); margin: 0 0 8px; color: var(--c-ink); }
.page-hero p { margin: 0; color: var(--c-ink-soft); }
.breadcrumb { font-size: .82rem; color: var(--c-ink-soft); margin-bottom: 16px; }
.breadcrumb a { color: var(--c-primary-d); }

/* ===== Table (会社概要) ===== */
.info-table { width: 100%; border-collapse: collapse; max-width: 760px; margin: 0 auto; background: #fff; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-soft); }
.info-table th, .info-table td { text-align: left; padding: 18px 22px; border-bottom: 1px solid var(--c-line); vertical-align: top; }
.info-table tr:last-child th, .info-table tr:last-child td { border-bottom: 0; }
.info-table th { width: 32%; background: var(--c-bg-tint); font-family: var(--font-head); font-weight: 700; color: var(--c-ink); white-space: nowrap; }
.todo { color: #c0392b; font-size: .8rem; font-weight: 700; }

/* ===== FAQ ===== */
.faq-list { max-width: 800px; margin: 0 auto; display: grid; gap: 14px; }
.faq-item { background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius-s); box-shadow: var(--shadow-soft); overflow: hidden; }
.faq-q { width: 100%; text-align: left; background: none; border: 0; cursor: pointer; padding: 20px 56px 20px 56px; font-family: var(--font-head); font-weight: 700; color: var(--c-ink); font-size: 1.02rem; position: relative; }
.faq-q::before { content: "Q"; position: absolute; left: 20px; top: 18px; color: var(--c-primary); font-weight: 700; }
.faq-q::after { content: ""; position: absolute; right: 22px; top: 50%; width: 10px; height: 10px; border-right: 2px solid var(--c-primary); border-bottom: 2px solid var(--c-primary); transform: translateY(-70%) rotate(45deg); transition: transform .25s; }
.faq-item.open .faq-q::after { transform: translateY(-30%) rotate(-135deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .3s ease; }
.faq-a-inner { padding: 0 22px 20px 56px; color: var(--c-ink-soft); position: relative; }
.faq-a-inner::before { content: "A"; position: absolute; left: 22px; top: 0; color: var(--c-sub); font-weight: 700; font-family: var(--font-head); }

/* ===== Form ===== */
.form-wrap { max-width: 720px; margin: 0 auto; }
.form-lead { text-align: center; color: var(--c-ink-soft); margin-bottom: 36px; }
.form-group { margin-bottom: 22px; }
.form-group label { display: block; font-family: var(--font-head); font-weight: 700; margin-bottom: 8px; color: var(--c-ink); }
.req { color: #fff; background: var(--c-primary); font-size: .68rem; padding: 2px 8px; border-radius: 999px; margin-left: 8px; vertical-align: middle; font-weight: 700; }
.opt { color: var(--c-ink-soft); background: var(--c-bg-tint); font-size: .68rem; padding: 2px 8px; border-radius: 999px; margin-left: 8px; vertical-align: middle; }
.form-control { width: 100%; padding: 14px 16px; border: 1.5px solid var(--c-line); border-radius: var(--radius-s); font-family: var(--font-body); font-size: 1rem; background: #fbfdfe; transition: border-color .2s, box-shadow .2s; color: var(--c-ink); }
.form-control:focus { outline: none; border-color: var(--c-primary); box-shadow: 0 0 0 3px rgba(63,182,216,.18); background: #fff; }
textarea.form-control { min-height: 150px; resize: vertical; }
.form-check { display: flex; gap: 10px; align-items: flex-start; font-size: .92rem; color: var(--c-ink-soft); }
.form-check input { margin-top: 5px; }
.form-submit { text-align: center; margin-top: 30px; }
.form-note { font-size: .82rem; color: var(--c-ink-soft); text-align: center; margin-top: 16px; }
.error-text { color: #c0392b; font-size: .82rem; margin: 6px 0 0; display: none; }
.form-control.invalid { border-color: #e07a72; }
.form-control.invalid + .error-text { display: block; }

/* ===== Rich text (privacy) ===== */
.prose { max-width: 820px; margin: 0 auto; }
.prose h2 { font-size: 1.25rem; color: var(--c-ink); margin: 38px 0 12px; padding-left: 14px; border-left: 5px solid var(--c-primary); }
.prose h2:first-child { margin-top: 0; }
.prose p, .prose li { color: var(--c-ink-soft); }
.prose ul, .prose ol { padding-left: 1.4em; }
.prose li { margin-bottom: 6px; }

/* ===== Responsive ===== */
@media (max-width: 820px) {
  .cards-3 { grid-template-columns: 1fr; }
  .flow { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .global-nav {
    position: fixed; inset: 72px 0 auto 0;
    background: #fff; border-bottom: 1px solid var(--c-line);
    transform: translateY(-120%); transition: transform .3s ease;
    box-shadow: var(--shadow);
  }
  .global-nav.open { transform: translateY(0); }
  .global-nav ul { flex-direction: column; gap: 0; align-items: stretch; padding: 8px 0; }
  .global-nav li { border-bottom: 1px solid var(--c-line); }
  .global-nav li:last-child { border-bottom: 0; }
  .global-nav a { display: block; padding: 16px 24px; }
  .nav-cta a { display: block; margin: 12px 24px; text-align: center; }
  .info-table th { width: 38%; padding: 14px; font-size: .92rem; }
  .info-table td { padding: 14px; }
}
@media (max-width: 480px) {
  .flow { grid-template-columns: 1fr; }
  .section { padding: 54px 0; }
  .btn { width: 100%; }
  .hero-actions, .cta-actions { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; transition: none !important; }
}