:root {
  --drone-ink: #24343a;
  --drone-navy: #153d46;
  --drone-teal: #006b73;
  --drone-teal-dark: #00545a;
  --drone-mist: #f3f6f5;
  --drone-line: #d6e1df;
  --drone-amber: #b47724;
  --drone-white: #fff;
  --drone-shadow: 0 12px 36px rgba(21, 61, 70, .08);
  --page-width: 1200px;
  --reading-width: 800px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-width: 320px;
  color: var(--drone-ink);
  background: var(--drone-white);
  font-family: "Noto Sans JP", "Yu Gothic", "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
  font-size: 17px;
  line-height: 1.8;
  text-rendering: optimizeLegibility;
}
a { color: var(--drone-teal); text-underline-offset: .18em; }
a:hover { color: var(--drone-teal-dark); }
img { max-width: 100%; height: auto; }
button, input { font: inherit; }
[id] { scroll-margin-top: 7rem; }

.skip-link { position: absolute; left: 1rem; top: -4rem; z-index: 100; padding: .6rem 1rem; color: #fff; background: var(--drone-navy); }
.skip-link:focus { top: 1rem; }
.site-shell { overflow: clip; }
.container { width: min(calc(100% - 64px), var(--page-width)); margin-inline: auto; }
.reading { width: min(100%, var(--reading-width)); }
.eyebrow { margin: 0 0 .8rem; color: var(--drone-teal); font-size: .82rem; font-weight: 700; letter-spacing: .12em; }
.eyebrow--light, .section--navy .eyebrow { color: #d7b47a; }
.section { padding: 80px 0; }
.section--mist { background: var(--drone-mist); }
.section--navy { color: #fff; background: var(--drone-navy); }
.section-heading { margin: 0; color: var(--drone-navy); font-size: clamp(1.7rem, 3vw, 2.35rem); line-height: 1.5; letter-spacing: .02em; }
.section--navy .section-heading { color: #fff; }
.section-lead { max-width: var(--reading-width); margin: 1rem 0 0; }
.section-lead--wide { max-width: 960px; }
.section-intro { margin-bottom: 2.4rem; }
/* 見出しの途中で改行させたくない語句のまとまり */
.phrase { display: inline-block; }
.text-link { display: inline-flex; align-items: center; gap: .45rem; font-weight: 700; }
.text-link::after { content: "→"; transition: transform .2s ease; }
.text-link:hover::after { transform: translateX(3px); }

.button-row { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 1.7rem; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: .68rem 1.15rem;
  border: 1px solid var(--drone-teal);
  border-radius: 5px;
  color: #fff;
  background: var(--drone-teal);
  font-size: .94rem;
  font-weight: 700;
  line-height: 1.45;
  text-align: center;
  text-decoration: none;
  transition: background .2s ease, border-color .2s ease, transform .2s ease;
}
.button:hover { color: #fff; background: var(--drone-teal-dark); border-color: var(--drone-teal-dark); transform: translateY(-1px); }
.button--secondary { color: var(--drone-navy); background: #fff; border-color: var(--drone-navy); }
.button--secondary:hover { color: #fff; background: var(--drone-navy); border-color: var(--drone-navy); }
.button--light { color: var(--drone-navy); background: #fff; border-color: #fff; }
.button--light:hover { color: #fff; background: transparent; border-color: #fff; }
.button--outline-light { color: #fff; background: transparent; border-color: rgba(255,255,255,.7); }
.button--outline-light:hover { color: var(--drone-navy); background: #fff; border-color: #fff; }
.button--quiet { color: var(--drone-teal); background: transparent; border-color: var(--drone-line); }
.button--quiet:hover { color: #fff; background: var(--drone-teal); border-color: var(--drone-teal); }

.site-header { position: relative; z-index: 20; border-bottom: 1px solid var(--drone-line); background: rgba(255,255,255,.98); }
.header-inner { display: flex; align-items: center; min-height: 88px; gap: 1.5rem; }
.brand { display: inline-flex; align-items: center; gap: .72rem; min-width: 230px; color: var(--drone-navy); text-decoration: none; }
.brand img { width: 54px; height: 54px; object-fit: contain; }
.brand strong { display: block; font-size: .95rem; line-height: 1.35; }
.brand small { display: block; margin-top: .05rem; color: #66757a; font-size: .7rem; line-height: 1.35; }
.menu-toggle { display: none; margin-left: auto; min-width: 48px; min-height: 48px; border: 1px solid var(--drone-line); border-radius: 4px; color: var(--drone-navy); background: #fff; font-weight: 700; }
.primary-nav { display: flex; align-items: center; justify-content: flex-end; gap: .35rem; margin-left: auto; }
.primary-nav a { display: inline-flex; align-items: center; min-height: 48px; padding: .5rem .68rem; color: var(--drone-ink); font-size: .86rem; font-weight: 700; line-height: 1.35; text-align: center; text-decoration: none; }
.primary-nav a:hover, .primary-nav a[aria-current="page"] { color: var(--drone-teal); }
/* nav-sub はスマホのメニューでだけ表示する下位項目（取得までの流れ、機器レンタル） */
.primary-nav .nav-sub { display: none; }
.primary-nav a[aria-current="page"] { box-shadow: inset 0 -3px 0 var(--drone-teal); }
.header-cta { flex: 0 0 auto; min-height: 44px; padding-inline: .9rem; font-size: .82rem; }
/* PCでは メニュー → 相談ボタン の順に右へ寄せる */
.primary-nav { order: 1; }
.header-cta { order: 2; }
.nav-group { position: relative; }
.nav-group summary { display: flex; align-items: center; min-height: 48px; padding: .5rem .68rem; color: var(--drone-ink); cursor: pointer; font-size: .86rem; font-weight: 700; list-style: none; }
.nav-group summary::-webkit-details-marker { display: none; }
.nav-group summary::after { content: "⌄"; margin-left: .3rem; color: var(--drone-teal); }
.nav-group[open] summary { color: var(--drone-teal); }
.nav-submenu { position: absolute; right: 0; width: 240px; margin: 0; padding: .45rem; border: 1px solid var(--drone-line); background: #fff; box-shadow: var(--drone-shadow); list-style: none; }
.nav-submenu a { display: block; min-height: auto; padding: .6rem .7rem; text-align: left; }

.site-footer { padding: 54px 0 34px; color: #e9f1ef; background: #102f36; }
.footer-grid { display: grid; grid-template-columns: 1.5fr repeat(5, minmax(0, 1fr)); gap: 2rem 1.5rem; }
.footer-brand { color: #fff; }
.footer-brand .brand { color: #fff; }
.footer-brand .brand small { color: #bbd1cd; }
.footer-copy { margin: 1rem 0 0; font-size: .86rem; }
.footer-heading { margin: 0 0 .8rem; color: #fff; font-size: .92rem; }
.footer-links { margin: 0; padding: 0; list-style: none; }
.footer-links li + li { margin-top: .38rem; }
.footer-links a { color: #e9f1ef; font-size: .82rem; }
.footer-bottom { display: flex; flex-wrap: wrap; justify-content: space-between; gap: .8rem 1.5rem; margin-top: 2.8rem; padding-top: 1.3rem; border-top: 1px solid rgba(255,255,255,.18); color: #bbd1cd; font-size: .75rem; }

.notice { padding: 1rem 1.1rem; border-left: 4px solid var(--drone-amber); background: #fffaf2; }
.notice p { margin: 0; }
.notice p + p { margin-top: .5rem; }
.site-note { margin-top: 1.3rem; color: #5e6b70; font-size: .82rem; }
.prose > * + * { margin-top: 1.1rem; }
.prose h3 { margin: 2rem 0 .55rem; color: var(--drone-navy); font-size: 1.25rem; line-height: 1.55; }
.prose ul, .prose ol { padding-left: 1.3rem; }
.prose li + li { margin-top: .4rem; }

/* ---------- 下層ページ共通：ページ見出しと目次 ---------- */
.page-hero { padding: 56px 0; background: var(--drone-mist); }
/* 見出しの右に写真や囲みがあっても、小見出しの高さが全ページで同じになるよう上端にそろえる */
.page-hero__grid { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(280px, .65fr); gap: 3rem; align-items: start; }
.page-hero h1 { max-width: none; margin: 0; color: var(--drone-navy); font-size: clamp(2.1rem, 3.4vw, 3rem); line-height: 1.38; }
.page-hero__lead { margin: 1.15rem 0 0; }
.page-hero__aside { padding: 1.3rem 1.45rem; border-left: 4px solid var(--drone-amber); background: #fff; }
.page-hero__aside p { margin: 0; }
.page-hero__aside p + p { margin-top: .7rem; }

.page-toc { margin-top: 2rem; padding: 1.1rem 1.2rem; border: 1px solid var(--drone-line); background: #fff; }
.page-toc strong { color: var(--drone-navy); }
.page-toc ol { display: flex; flex-wrap: wrap; gap: .45rem 1.15rem; margin: .55rem 0 0; padding: 0; list-style: none; }
.page-toc a { font-size: .85rem; font-weight: 700; }

.mobile-actions { display: none; }

/* ---------- 共通部品：申込みの章（紺の背景＋電話番号の枠） ---------- */
.contact-grid { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(0, .7fr); gap: 3rem; align-items: center; }
.contact-grid .section-lead { color: #dce9e7; }
.contact-tel { padding: 1.8rem; border: 1px solid rgba(255,255,255,.28); border-radius: 6px; }
.contact-tel p { margin: 0; }
.contact-tel__label { font-size: .88rem; font-weight: 700; }
.contact-tel__number { margin-top: .3rem !important; font-size: clamp(1.8rem, 3vw, 2.3rem); font-weight: 700; line-height: 1.3; letter-spacing: .03em; }
.contact-tel__number a { color: #fff; text-decoration: none; }
.contact-tel__hours { margin-top: .5rem !important; color: #dce9e7; font-size: .84rem; }

/* ---------- 共通部品：番号付きの手順（予約から利用まで など） ---------- */
.step-list { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1rem; margin: 2.2rem 0 0; padding: 0; list-style: none; counter-reset: none; }
.step { position: relative; padding: 1.4rem 1.3rem; border: 1px solid var(--drone-line); border-radius: 6px; background: #fff; }
.step__no { display: inline-block; color: var(--drone-amber); font-family: Consolas, Menlo, monospace; font-size: .9rem; font-weight: 700; letter-spacing: .08em; }
.step h3 { margin: .3rem 0 .5rem; color: var(--drone-navy); font-size: 1.08rem; line-height: 1.5; }
.step p { margin: 0; font-size: .92rem; }
.step strong { color: var(--drone-navy); }

/* ---------- 共通部品：別ページへ誘導する枠（左に黄土色の線） ---------- */
.callout { display: grid; grid-template-columns: 1fr auto; gap: 2rem; align-items: center; padding: clamp(1.5rem, 4vw, 2.4rem); border-left: 5px solid var(--drone-amber); background: #fff; }
.callout h2 { margin: 0; color: var(--drone-navy); font-size: clamp(1.35rem, 2.4vw, 1.75rem); line-height: 1.5; }
.callout p:last-child { margin: .6rem 0 0; }

/* ---------- 共通部品：項目と値の一覧（広さ・所在地 など） ---------- */
.spec-list { margin: 1.2rem 0 0; }
.spec-list div { display: grid; grid-template-columns: 7.5em 1fr; gap: 1rem; padding: .6rem 0; border-top: 1px solid var(--drone-line); }
.spec-list dt { color: #5d6d72; font-size: .86rem; font-weight: 700; }
.spec-list dd { margin: 0; }

/* ---------- 共通部品：補足の箇条書き ---------- */
.note-list { margin: 1.4rem 0 0; padding-left: 1.2rem; font-size: .92rem; }
.note-list li + li { margin-top: .3rem; }

/* ---------- ページの先頭へ戻るボタン ----------
   群馬インターネットのサイト（gunma/wind/css/gi2026.css の .gi-pagetop）と同じ動き。
   52px角・半透明・白枠・1秒でフェードイン。色だけドローンサイトの紺にしている。
   出す／消す条件は js/drone-nav.js 側で判定する */
.pagetop { margin: 0; }
.pagetop a { display: none; }
body.is-pagetop .pagetop a {
  position: fixed;
  right: 3%;
  bottom: 100px;
  z-index: 30;
  display: block;
  width: 52px;
  height: 52px;
  border: 1px solid #fff;
  color: #fff;
  background: rgba(21, 61, 70, .75);
  font-size: 1.2rem;
  line-height: 50px;
  text-align: center;
  text-decoration: none;
  animation: pagetop-in 1s forwards;
}
body.is-pagetop .pagetop a:hover { color: #fff; background: var(--drone-teal); }
body.is-pagetop .pagetop a:focus-visible { outline: 3px solid var(--drone-amber); outline-offset: 2px; }
@keyframes pagetop-in { from { opacity: 0; } to { opacity: 1; } }

@media (max-width: 1000px) {
  .contact-grid { grid-template-columns: 1fr; gap: 2rem; }
  .step-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 1100px) {
  .header-inner { flex-wrap: wrap; padding-block: .7rem; min-height: 76px; }
  .menu-toggle { display: inline-flex; align-items: center; justify-content: center; }
  .primary-nav { display: none; flex-basis: 100%; align-items: stretch; order: 4; margin: 0; padding-top: .5rem; border-top: 1px solid var(--drone-line); }
  .site-header.menu-open .primary-nav { display: flex; flex-direction: column; }
  .primary-nav > a, .nav-group { width: 100%; }
  .primary-nav > a { justify-content: flex-start; padding: .68rem .25rem; }
  .primary-nav > a.nav-sub { display: flex; min-height: 40px; padding: .4rem .25rem .4rem 1.4rem; color: #4b5c62; font-size: .8rem; font-weight: 400; }
  .primary-nav > a.nav-sub::before { content: "└"; margin-right: .4rem; color: var(--drone-line); }
  .footer-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .footer-brand { grid-column: 1 / -1; }
  .primary-nav a[aria-current="page"] { box-shadow: inset 3px 0 0 var(--drone-teal); }
  .nav-group summary { padding: .68rem .25rem; }
  .nav-submenu { position: static; width: auto; margin: 0 0 .5rem; box-shadow: none; }
  .header-cta { order: 2; margin-left: auto; }
  .menu-toggle { order: 3; margin-left: .5rem; }
}

@media (max-width: 800px) {
  .page-hero { padding: 40px 0; }
  .page-hero h1 { font-size: clamp(1.82rem, 7.5vw, 2.25rem); }
  .page-hero__grid { grid-template-columns: 1fr; }
  .page-hero__aside { margin-top: .4rem; }
}

@media (max-width: 760px) {
  body { font-size: 16px; }
  .step-list { grid-template-columns: 1fr; }
  .callout { grid-template-columns: 1fr; gap: 1.2rem; }
  .spec-list div { grid-template-columns: 6em 1fr; gap: .6rem; }
  .container { width: min(calc(100% - 40px), var(--page-width)); }
  .section { padding: 48px 0; }
  .header-inner { min-height: 70px; gap: .5rem; }
  .brand { min-width: 0; gap: .45rem; }
  .brand img { width: 44px; height: 44px; }
  .brand strong { font-size: .79rem; }
  .brand small { display: none; }
  .header-cta { display: none; }
  .menu-toggle { margin-left: auto; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 1.8rem 1.2rem; }
  .footer-brand { grid-column: 1 / -1; }
  .button { width: 100%; }
  .button-row { display: grid; grid-template-columns: 1fr; }
  .mobile-actions { position: fixed; right: 0; bottom: 0; left: 0; z-index: 15; display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid var(--drone-line); background: #fff; box-shadow: 0 -5px 22px rgba(21,61,70,.12); }
  .mobile-actions a { display: flex; align-items: center; justify-content: center; min-height: 56px; padding: .5rem; color: #fff; background: var(--drone-teal); font-size: .82rem; font-weight: 700; line-height: 1.35; text-align: center; text-decoration: none; }
  .mobile-actions a + a { border-left: 1px solid rgba(255,255,255,.35); background: var(--drone-navy); }
  .has-mobile-actions main { padding-bottom: 66px; }
  .site-header.menu-open ~ .mobile-actions { display: none; }
  /* スマホでは小さくして右下に寄せる。画面下の固定ボタンがあるページでは、その上に出す */
  body.is-pagetop .pagetop a { right: 12px; bottom: 16px; width: 44px; height: 44px; line-height: 42px; }
  body.has-mobile-actions.is-pagetop .pagetop a { bottom: 72px; }
}

@media print {
  .site-header, .site-footer, .mobile-actions, .pagetop, .no-print { display: none !important; }
  body { color: #000; background: #fff; font-size: 11pt; }
  .container, .reading { width: 100%; max-width: none; }
  .section { padding: 14mm 0; break-inside: avoid; }
  .section--mist, .section--navy { color: #000; background: #fff; }
  .section-heading, .section--navy .section-heading { color: #000; }
  a { color: #000; text-decoration: underline; }
  a[href^="http"]::after { content: " (" attr(href) ")"; font-size: 8pt; overflow-wrap: anywhere; }
}