/* ============================================================
   AERIS — 産業用ドローンインフラ点検（架空企業デモサイト）
   MAツール検証用ダミーHP。実在の企業・製品とは無関係
   ライトテーマ（白背景）
   ============================================================ */
:root {
  --bg: #FFFFFF;
  --bg-2: #F6F9FC;
  --bg-3: #EEF4FA;
  --ink: #16212E;
  --mut: #5A6B7E;
  --faint: #93A3B5;
  --cyan: #0795C6;          /* 文字用の濃いシアン */
  --cyan-bright: #2BC8F0;   /* グラデーション用 */
  --violet: #6C5CE7;
  --mint: #0FA97E;
  --line: #E2E9F0;
  --glass: #FFFFFF;
  --grad: linear-gradient(100deg, var(--cyan-bright), var(--violet));
  --radius: 18px;
  --shadow: 0 10px 30px rgba(22, 45, 75, .08);
  --font-jp: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic Medium", sans-serif;
  --font-en: "Outfit", "Segoe UI", sans-serif;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-jp);
  font-size: 16px;
  line-height: 1.75;
  overflow-x: hidden;
}
body::before { /* 背景のグリッド */
  content: ""; position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(22, 45, 75, .045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(22, 45, 75, .045) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, #000 30%, transparent 75%);
}
a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }
.en { font-family: var(--font-en); letter-spacing: .02em; }

.wrap { max-width: 1180px; margin: 0 auto; padding: 0 28px; position: relative; z-index: 1; }

/* ---------- ナビ ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(14px);
  background: rgba(255, 255, 255, .82);
  border-bottom: 1px solid var(--line);
}
.nav-in { max-width: 1180px; margin: 0 auto; padding: 0 28px; height: 68px; display: flex; align-items: center; gap: 34px; }
.logo { display: flex; align-items: center; gap: 10px; font-family: var(--font-en); font-weight: 700; font-size: 21px; letter-spacing: .14em; color: var(--ink); }
.logo .mark { width: 30px; height: 30px; }
.nav-links { display: flex; gap: 26px; margin-left: auto; font-size: 14px; color: var(--mut); }
.nav-links a { padding: 6px 2px; transition: color .2s; }
.nav-links a:hover, .nav-links a.on { color: var(--ink); }
.nav-links a.on { border-bottom: 2px solid var(--cyan); }
.nav-cta {
  margin-left: 6px; padding: 9px 20px; border-radius: 10px;
  background: var(--grad); color: #FFFFFF; font-weight: 700; font-size: 13.5px;
  transition: transform .15s, box-shadow .2s;
}
.nav-cta:hover { transform: translateY(-1px); box-shadow: 0 6px 20px rgba(43, 200, 240, .45); }
.nav-toggle { display: none; }

/* スマホ・タブレット: メニューは三本線ボタンで開閉（カタログDLは常に表示） */
@media (max-width: 900px) {
  .nav-in { height: 60px; padding: 0 14px 0 20px; gap: 10px; }
  .logo { font-size: 19px; }
  .logo .mark { width: 26px; height: 26px; }
  .nav-cta { margin-left: auto; padding: 8px 14px; font-size: 13px; }
  .nav-toggle {
    display: flex; align-items: center; justify-content: center; flex-shrink: 0;
    width: 42px; height: 42px; border: 1px solid var(--line); border-radius: 10px; background: #FFFFFF; cursor: pointer;
  }
  .nav-toggle span, .nav-toggle span::before, .nav-toggle span::after {
    display: block; width: 18px; height: 2px; border-radius: 2px; background: var(--ink); transition: transform .2s, background .2s;
  }
  .nav-toggle span { position: relative; }
  .nav-toggle span::before, .nav-toggle span::after { content: ""; position: absolute; left: 0; }
  .nav-toggle span::before { top: -6px; }
  .nav-toggle span::after { top: 6px; }
  .nav.open .nav-toggle { border-color: rgba(7, 149, 198, .4); }
  .nav.open .nav-toggle span { background: transparent; }
  .nav.open .nav-toggle span::before { transform: translateY(6px) rotate(45deg); }
  .nav.open .nav-toggle span::after { transform: translateY(-6px) rotate(-45deg); }
  .nav-links {
    display: none; position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; gap: 4px; margin: 0; padding: 10px 14px 16px;
    background: #FFFFFF; border-bottom: 1px solid var(--line); box-shadow: 0 18px 32px rgba(22, 45, 75, .12);
    font-size: 15px; color: var(--ink);
  }
  .nav.open .nav-links { display: flex; }
  .nav-links a { padding: 12px 14px; border-radius: 10px; border: 1px solid transparent; }
  .nav-links a.on { border-bottom: 1px solid rgba(7, 149, 198, .3); border-color: rgba(7, 149, 198, .3); background: rgba(43, 200, 240, .1); color: var(--cyan); font-weight: 700; }
}

/* ---------- ヒーロー ---------- */
.hero { position: relative; padding: 96px 0 90px; overflow: hidden; }
.hero::before {
  content: ""; position: absolute; top: -220px; right: -160px; width: 720px; height: 720px;
  background: radial-gradient(circle, rgba(108, 92, 231, .12), transparent 62%);
  pointer-events: none;
}
.hero::after {
  content: ""; position: absolute; bottom: -260px; left: -140px; width: 640px; height: 640px;
  background: radial-gradient(circle, rgba(43, 200, 240, .12), transparent 60%);
  pointer-events: none;
}
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-en); font-size: 12.5px; font-weight: 700; letter-spacing: .34em;
  color: var(--cyan); text-transform: uppercase; margin-bottom: 26px;
}
.eyebrow::before { content: ""; width: 34px; height: 1px; background: var(--cyan); }
h1.title {
  font-size: clamp(40px, 5.4vw, 64px); font-weight: 900; line-height: 1.22; letter-spacing: .01em;
  margin-bottom: 26px;
}
.grad-text { background: linear-gradient(100deg, var(--cyan), var(--violet)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lede { max-width: 620px; font-size: 17px; color: var(--mut); margin-bottom: 40px; }
.btn-row { display: flex; gap: 16px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 15px 30px; border-radius: 12px; font-weight: 700; font-size: 15px;
  transition: transform .15s, box-shadow .2s, background .2s;
}
.btn-primary { background: var(--grad); color: #FFFFFF; }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 10px 28px rgba(43, 200, 240, .5); }
.btn-ghost { border: 1.5px solid var(--line); color: var(--ink); background: #FFFFFF; }
.btn-ghost:hover { border-color: var(--cyan); color: var(--cyan); }
.btn .arrow { transition: transform .2s; }
.btn:hover .arrow { transform: translateX(4px); }

/* ---------- セクション共通 ---------- */
section { padding: 84px 0; position: relative; }
.sec-head { margin-bottom: 48px; }
h2.sec-title { font-size: clamp(28px, 3.4vw, 40px); font-weight: 900; line-height: 1.3; margin-bottom: 14px; }
.sec-sub { color: var(--mut); max-width: 640px; }
.center { text-align: center; }
.center .sec-sub { margin: 0 auto; }
.center .eyebrow::before { display: none; }
.sec-tint { background: linear-gradient(180deg, transparent, var(--bg-2) 20%, var(--bg-2) 80%, transparent); }

/* ---------- カード ---------- */
.grid { display: grid; gap: 22px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 920px) { .grid-3, .grid-2 { grid-template-columns: 1fr; } }
.card {
  background: var(--glass); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px 28px; box-shadow: var(--shadow);
  transition: transform .2s, border-color .25s, box-shadow .25s;
}
.card:hover { transform: translateY(-4px); border-color: rgba(7, 149, 198, .45); box-shadow: 0 18px 44px rgba(22, 45, 75, .13); }
.card .ico {
  width: 52px; height: 52px; border-radius: 14px; margin-bottom: 20px;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, rgba(43, 200, 240, .12), rgba(108, 92, 231, .12));
  border: 1px solid rgba(7, 149, 198, .28);
}
.card .ico svg { width: 26px; height: 26px; stroke: var(--cyan); fill: none; stroke-width: 1.8; }
.card h3 { font-size: 19px; font-weight: 700; margin-bottom: 10px; }
.card p { font-size: 14.5px; color: var(--mut); }
.card .more { display: inline-flex; align-items: center; gap: 6px; margin-top: 18px; font-size: 13.5px; font-weight: 700; color: var(--cyan); }

/* タグ */
.tag {
  display: inline-block; padding: 4px 14px; border-radius: 999px;
  font-size: 12px; font-weight: 700; letter-spacing: .06em;
  background: rgba(43, 200, 240, .12); color: var(--cyan); border: 1px solid rgba(7, 149, 198, .3);
  margin-bottom: 16px;
}
.tag.v { background: rgba(108, 92, 231, .1); color: var(--violet); border-color: rgba(108, 92, 231, .32); }
.tag.m { background: rgba(15, 169, 126, .1); color: var(--mint); border-color: rgba(15, 169, 126, .3); }

/* ---------- 数字スタット ---------- */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
@media (max-width: 920px) { .stats { grid-template-columns: repeat(2, 1fr); } }
.stat { text-align: center; padding: 30px 12px; border: 1px solid var(--line); border-radius: var(--radius); background: #FFFFFF; box-shadow: var(--shadow); }
.stat .num { font-family: var(--font-en); font-size: 44px; font-weight: 800; line-height: 1.1; background: linear-gradient(100deg, var(--cyan), var(--violet)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.stat .unit { font-size: 18px; }
.stat .lbl { margin-top: 8px; font-size: 13px; color: var(--mut); }

/* ---------- 帯CTA ---------- */
.cta-band {
  border: 1px solid rgba(7, 149, 198, .25); border-radius: 22px;
  background:
    radial-gradient(ellipse 60% 120% at 85% 50%, rgba(108, 92, 231, .1), transparent),
    radial-gradient(ellipse 50% 120% at 10% 50%, rgba(43, 200, 240, .12), transparent),
    var(--bg-3);
  padding: 56px; display: flex; align-items: center; justify-content: space-between; gap: 30px; flex-wrap: wrap;
}
.cta-band h2 { font-size: 28px; font-weight: 900; margin-bottom: 8px; }
.cta-band p { color: var(--mut); font-size: 14.5px; }

/* ---------- テーブル ---------- */
table.spec { width: 100%; border-collapse: collapse; font-size: 14.5px; }
table.spec th, table.spec td { padding: 14px 18px; border-bottom: 1px solid var(--line); text-align: left; }
table.spec th { color: var(--mut); font-weight: 500; width: 220px; }

/* ---------- 事例 ---------- */
.case-head { display: flex; gap: 14px; align-items: baseline; margin-bottom: 8px; flex-wrap: wrap; }
.case-head .en-no { font-family: var(--font-en); font-weight: 800; font-size: 14px; color: var(--faint); letter-spacing: .2em; }
.kpi-line { display: flex; gap: 26px; margin-top: 20px; flex-wrap: wrap; }
.kpi-line .k { font-family: var(--font-en); font-size: 30px; font-weight: 800; color: var(--cyan); line-height: 1.1; }
.kpi-line .k small { font-size: 13px; color: var(--mut); display: block; font-family: var(--font-jp); font-weight: 500; margin-top: 4px; }

/* ---------- 事例詳細 ---------- */
.quote {
  border-left: 3px solid var(--cyan); border-radius: 0 var(--radius) var(--radius) 0;
  background: var(--bg-2); padding: 28px 30px; margin: 10px 0;
}
.quote p { font-size: 15.5px; line-height: 2; color: var(--ink); }
.quote .who { margin-top: 14px; font-size: 13px; color: var(--mut); }
.step-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
@media (max-width: 920px) { .step-row { grid-template-columns: 1fr; } }
.step {
  position: relative; padding: 26px 24px 24px; border: 1px solid var(--line);
  border-radius: var(--radius); background: #FFFFFF; box-shadow: var(--shadow);
}
.step .no { font-family: var(--font-en); font-size: 13px; font-weight: 800; letter-spacing: .2em; color: var(--cyan); margin-bottom: 12px; }
.step h4 { font-size: 16px; margin-bottom: 8px; }
.step p { font-size: 13.5px; color: var(--mut); }
.case-nav { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.case-nav a { display: inline-flex; align-items: center; gap: 8px; font-size: 14px; font-weight: 700; color: var(--mut); transition: color .2s; }
.case-nav a:hover { color: var(--cyan); }

/* ---------- FAQ ---------- */
details.faq {
  border: 1px solid var(--line); border-radius: 14px; background: #FFFFFF; box-shadow: var(--shadow);
  padding: 0 26px; margin-bottom: 14px; transition: border-color .2s;
}
details.faq[open] { border-color: rgba(7, 149, 198, .4); }
details.faq summary {
  cursor: pointer; list-style: none; display: flex; align-items: center; gap: 16px;
  padding: 20px 0; font-weight: 700; font-size: 15.5px;
}
details.faq summary::-webkit-details-marker { display: none; }
details.faq summary .q { font-family: var(--font-en); font-weight: 800; color: var(--cyan); }
details.faq summary::after { content: "+"; margin-left: auto; font-family: var(--font-en); font-size: 22px; color: var(--faint); transition: transform .2s; }
details.faq[open] summary::after { transform: rotate(45deg); color: var(--cyan); }
details.faq .a { padding: 0 0 22px 36px; color: var(--mut); font-size: 14.5px; }

/* ---------- フォーム ---------- */
.form-card {
  background: #FFFFFF; border: 1px solid var(--line); border-radius: 22px; padding: 44px;
  box-shadow: 0 16px 44px rgba(22, 45, 75, .1);
}
.f-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
@media (max-width: 760px) { .f-row { grid-template-columns: 1fr; row-gap: 0; } }
.f-group { margin-bottom: 20px; }
.f-group label { display: block; font-size: 13px; font-weight: 700; color: var(--mut); margin-bottom: 8px; }
.f-group label .req { color: var(--cyan); font-size: 11px; margin-left: 8px; border: 1px solid rgba(7, 149, 198, .4); border-radius: 4px; padding: 1px 6px; }
.f-group input, .f-group select, .f-group textarea {
  width: 100%; padding: 13px 16px; border-radius: 10px;
  background: var(--bg-2); border: 1px solid var(--line); color: var(--ink);
  font-family: var(--font-jp); font-size: 15px; outline: none; transition: border-color .2s, box-shadow .2s, background .2s;
}
.f-group input:focus, .f-group select:focus, .f-group textarea:focus {
  border-color: var(--cyan); background: #FFFFFF; box-shadow: 0 0 0 3px rgba(43, 200, 240, .18);
}
.f-note { font-size: 12.5px; color: var(--faint); margin-top: 14px; }

/* ---------- フッター ---------- */
footer { border-top: 1px solid var(--line); padding: 54px 0 40px; margin-top: 40px; background: var(--bg-2); }
.foot-in { display: flex; justify-content: space-between; gap: 30px; flex-wrap: wrap; }
.foot-links { display: flex; gap: 24px; font-size: 13.5px; color: var(--mut); flex-wrap: wrap; }
.foot-links a:hover { color: var(--cyan); }
.copyright { margin-top: 26px; font-size: 12px; color: var(--faint); }
.demo-note { margin-top: 6px; font-size: 11.5px; color: var(--faint); }

/* ---------- ページヘッダー（下層） ---------- */
.page-head { padding: 84px 0 10px; }
.breadcrumb { font-size: 12.5px; color: var(--faint); margin-bottom: 22px; }
.breadcrumb a:hover { color: var(--cyan); }

/* ---------- ドローンSVGアニメ ---------- */
.hero-visual { position: absolute; right: -40px; top: 90px; width: 560px; opacity: .95; pointer-events: none; }
@media (max-width: 1080px) { .hero-visual { display: none; } }
.float { animation: float 5.5s ease-in-out infinite; }
@keyframes float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-16px); } }
.scan { animation: scan 3.4s ease-in-out infinite; transform-origin: center; }
@keyframes scan { 0%,100% { opacity: .12; } 50% { opacity: .5; } }
.pulse-ring { animation: ring 3s ease-out infinite; transform-origin: center; }
@keyframes ring { 0% { transform: scale(.6); opacity: .6; } 100% { transform: scale(1.5); opacity: 0; } }

/* ---------- スマホ幅の調整（余白を詰め、見出しが単語の途中で折れないように） ---------- */
@media (max-width: 600px) {
  body { font-size: 15px; }
  .wrap { padding: 0 20px; }
  section { padding: 56px 0; }
  .hero { padding: 52px 0 48px; }
  .page-head { padding: 48px 0 4px; }
  .eyebrow { font-size: 11.5px; letter-spacing: .22em; margin-bottom: 16px; }
  .eyebrow::before { width: 22px; }
  h1.title { font-size: 33px; margin-bottom: 20px; }
  h2.sec-title { font-size: 25px; }
  .lede { font-size: 15px; margin-bottom: 28px; }
  .btn { padding: 13px 22px; font-size: 14.5px; }
  .sec-head { margin-bottom: 30px; }
  .grid { gap: 16px; }
  .card { padding: 24px 20px !important; } /* ページ側の直書き（padding:36〜44px）より優先 */
  .stats { gap: 12px; }
  .stat { padding: 22px 8px; }
  .stat .num { font-size: 34px; }
  .stat .unit { font-size: 15px; }
  .stat .lbl { font-size: 12px; }
  .cta-band { padding: 30px 22px; gap: 20px; border-radius: 18px; }
  .cta-band h2 { font-size: 21px; }
  table.spec { font-size: 13.5px; }
  table.spec th, table.spec td { padding: 11px 8px; }
  table.spec th { width: 34%; }
  .kpi-line { gap: 18px; }
  .kpi-line .k { font-size: 26px; }
  .quote { padding: 20px 18px; }
  .quote p { font-size: 14.5px; line-height: 1.9; }
  details.faq { padding: 0 16px; }
  details.faq summary { font-size: 14.5px; gap: 12px; padding: 16px 0; }
  details.faq .a { padding: 0 0 18px 0; }
  .form-card { padding: 26px 18px; border-radius: 18px; }
  footer { padding: 40px 0 30px; }
  .foot-links { gap: 10px 18px; }
}

/* 入力欄は16px以上（16px未満だとiPhone・iPadが入力時に画面を拡大する）。フォーム部の指定より後ろに置く */
@media (max-width: 900px) {
  .f-group input, .f-group select, .f-group textarea { font-size: 16px; }
}