@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+JP:wght@500;600;700&family=Cormorant+Garamond:wght@500;600&display=swap');

/* =========================================================
   inventist.jp  —  共通スタイルシート
   高級感のある知財プラットフォーム
   配色: ディープネイビー × ウォームゴールド + スチールブルー
   ========================================================= */

:root {
  --navy:        #0e2545;
  --navy-deep:   #081627;
  --navy-soft:   #1d3a63;
  --steel:       #2e6fb0;
  --steel-light: #6fa6dd;
  --accent:      #c9a227;   /* ウォームゴールド（知財の格・高級感） */
  --accent-soft: #e3c878;
  --gold-grad:   linear-gradient(120deg,#e7cf8a,#c9a227 55%,#9c7c18);
  --ink:         #16202e;
  --text:        #3a4654;
  --muted:       #6b7785;
  --line:        #e6ebf2;
  --line-strong: #d3dbe6;
  --bg:          #ffffff;
  --bg-soft:     #f6f9fc;
  --bg-tint:     #eef3f9;
  --bg-cream:    #faf8f3;
  --white:       #ffffff;
  --radius:      14px;
  --radius-sm:   9px;
  --shadow:      0 1px 2px rgba(14,37,69,.05), 0 10px 30px rgba(14,37,69,.07);
  --shadow-lg:   0 24px 60px rgba(14,37,69,.16);
  --maxw:        1160px;
  --font: "Helvetica Neue", Arial, "Hiragino Kaku Gothic ProN",
          "Hiragino Sans", "Noto Sans JP", Meiryo, sans-serif;
  --display: "Noto Serif JP", "Hiragino Mincho ProN", "Yu Mincho", serif;
  --serif-en: "Cormorant Garamond", "Noto Serif JP", serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.85;
  font-size: 16px;
  letter-spacing: .01em;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

a { color: var(--steel); text-decoration: none; transition: color .15s ease; }
a:hover { color: var(--navy); }

h1, h2, h3, h4 { color: var(--ink); line-height: 1.4; font-weight: 700; letter-spacing: .02em; }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

.section { padding: 84px 0; }
.section--soft { background: var(--bg-soft); }
.section--tint { background: var(--bg-tint); }
.section--navy { background: var(--navy); color: #d6e0ee; }
.section--navy h2, .section--navy h3 { color: #fff; }

.eyebrow {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .22em;
  color: var(--steel);
  text-transform: uppercase;
  margin-bottom: 14px;
}
.section--navy .eyebrow { color: var(--steel-light); }

.section-head { max-width: 720px; margin-bottom: 48px; }
.section-head h2 { font-size: clamp(24px, 3vw, 32px); margin-bottom: 14px; }
.section-head p { color: var(--muted); font-size: 16px; }
.section--navy .section-head p { color: #b6c4d8; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 26px;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 15px;
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: all .18s ease;
  letter-spacing: .03em;
}
.btn--primary { background: var(--steel); color: #fff; }
.btn--primary:hover { background: var(--navy); color: #fff; transform: translateY(-1px); }
.btn--ghost { background: transparent; color: var(--navy); border-color: var(--line); }
.btn--ghost:hover { border-color: var(--steel); color: var(--steel); }
.btn--on-navy { background: #fff; color: var(--navy); }
.btn--on-navy:hover { background: var(--accent); color: var(--navy-deep); }
.btn--lg { padding: 16px 32px; font-size: 16px; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.92);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand { display: flex; align-items: baseline; gap: 2px; font-weight: 800; font-size: 21px; color: var(--navy); letter-spacing: .02em; }
.brand .dot { color: var(--accent); }
.brand small { font-size: 11px; font-weight: 600; color: var(--muted); margin-left: 8px; letter-spacing: .14em; }
.nav-links { display: flex; align-items: center; gap: 28px; list-style: none; }
.nav-links a { color: var(--ink); font-size: 14.5px; font-weight: 600; }
.nav-links a:hover { color: var(--steel); }
.nav-cta { display: flex; align-items: center; gap: 14px; }
.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--navy); margin: 5px 0; transition: .2s; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  background:
    radial-gradient(1100px 500px at 80% -10%, rgba(46,111,176,.18), transparent 60%),
    linear-gradient(180deg, var(--navy-deep), var(--navy));
  color: #e7eefa;
  padding: 96px 0 88px;
  overflow: hidden;
}
.hero::after {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(700px 380px at 75% 20%, #000, transparent 75%);
  pointer-events: none;
}
.hero .container { position: relative; z-index: 1; }
.hero h1 {
  color: #fff;
  font-size: clamp(30px, 4.6vw, 50px);
  line-height: 1.28;
  letter-spacing: .02em;
  margin-bottom: 22px;
  max-width: 16em;
}
.hero h1 .hl { color: var(--accent); }
.hero .lead { font-size: clamp(16px, 1.8vw, 19px); color: #c2d1e6; max-width: 40em; margin-bottom: 34px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 40px; }
.hero-stats { display: flex; flex-wrap: wrap; gap: 40px; border-top: 1px solid rgba(255,255,255,.14); padding-top: 28px; }
.hero-stat .num { font-size: 26px; font-weight: 800; color: #fff; }
.hero-stat .lbl { font-size: 13px; color: #9fb2cc; }

/* ---------- Hero search ---------- */
.hero-search { margin-top: 30px; background: #fff; border-radius: var(--radius); padding: 18px; box-shadow: var(--shadow-lg); max-width: 640px; }
.hero-search form { display: flex; gap: 10px; }
.hero-search input { flex: 1; border: 1.5px solid var(--line); border-radius: var(--radius-sm); padding: 13px 16px; font-size: 15px; color: var(--ink); font-family: inherit; }
.hero-search input:focus { outline: none; border-color: var(--steel); }
.hero-search .hint { color: var(--muted); font-size: 12.5px; margin-top: 10px; }

/* ---------- Grid / cards ---------- */
.grid { display: grid; gap: 24px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 32px 28px; box-shadow: var(--shadow); transition: transform .18s ease, box-shadow .18s ease;
  display: flex; flex-direction: column;
}
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.card .ic {
  width: 46px; height: 46px; border-radius: 10px; display: flex; align-items: center; justify-content: center;
  background: var(--bg-tint); color: var(--steel); margin-bottom: 18px;
}
.card .ic svg { width: 24px; height: 24px; }
.card .tag { font-size: 12px; font-weight: 700; letter-spacing: .14em; color: var(--steel); margin-bottom: 8px; }
.card h3 { font-size: 19px; margin-bottom: 10px; }
.card p { color: var(--muted); font-size: 14.5px; margin-bottom: 18px; }
.card .card-link { margin-top: auto; font-weight: 700; font-size: 14px; display: inline-flex; align-items: center; gap: 6px; }
.card .card-link::after { content: "→"; transition: transform .15s; }
.card:hover .card-link::after { transform: translateX(3px); }

/* numbered steps */
.steps { counter-reset: step; display: grid; gap: 20px; }
.step { display: flex; gap: 18px; align-items: flex-start; }
.step .n {
  counter-increment: step; flex: 0 0 auto;
  width: 38px; height: 38px; border-radius: 50%;
  background: var(--navy); color: #fff; font-weight: 800;
  display: flex; align-items: center; justify-content: center; font-size: 15px;
}
.step .n::before { content: counter(step); }
.step h4 { font-size: 16.5px; margin-bottom: 4px; }
.step p { color: var(--muted); font-size: 14.5px; }

/* feature list with checks */
.checks { list-style: none; display: grid; gap: 12px; }
.checks li { position: relative; padding-left: 30px; color: var(--text); }
.checks li::before {
  content: "✓"; position: absolute; left: 0; top: 0;
  color: var(--steel); font-weight: 800;
  background: var(--bg-tint); width: 22px; height: 22px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center; font-size: 12px;
}

/* ---------- Forms ---------- */
.form-wrap { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 36px; box-shadow: var(--shadow); }
.field { margin-bottom: 20px; }
.field label { display: block; font-weight: 700; font-size: 14px; color: var(--ink); margin-bottom: 7px; }
.field label .req { color: #c0392b; font-size: 12px; margin-left: 4px; }
.field input, .field select, .field textarea {
  width: 100%; border: 1.5px solid var(--line); border-radius: var(--radius-sm);
  padding: 12px 14px; font-size: 15px; font-family: inherit; color: var(--ink); background: #fff;
}
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--steel); box-shadow: 0 0 0 3px rgba(46,111,176,.12); }
.field textarea { min-height: 130px; resize: vertical; }
.field .help { font-size: 12.5px; color: var(--muted); margin-top: 6px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form-note { font-size: 12.5px; color: var(--muted); margin-top: 14px; }
.consent { display: flex; gap: 10px; align-items: flex-start; font-size: 13.5px; color: var(--text); }
.consent input { width: auto; margin-top: 4px; }

/* ---------- Misc ---------- */
.lead-block { max-width: 760px; }
.note {
  background: var(--bg-tint); border-left: 3px solid var(--steel);
  border-radius: var(--radius-sm); padding: 18px 20px; font-size: 14px; color: var(--text);
}
.note strong { color: var(--navy); }
.badge { display: inline-block; background: var(--bg-tint); color: var(--steel); font-size: 12px; font-weight: 700; padding: 5px 12px; border-radius: 999px; letter-spacing: .08em; }

.pagehero { background: var(--navy); color: #dce6f3; padding: 64px 0 56px; }
.pagehero h1 { color: #fff; font-size: clamp(26px, 3.4vw, 38px); margin-bottom: 12px; }
.pagehero p { color: #b6c4d8; max-width: 44em; }
.breadcrumb { font-size: 13px; color: #8ba0bd; margin-bottom: 18px; }
.breadcrumb a { color: #b6c4d8; }

.table { width: 100%; border-collapse: collapse; font-size: 14.5px; }
.table th, .table td { text-align: left; padding: 14px 16px; border-bottom: 1px solid var(--line); }
.table th { background: var(--bg-soft); color: var(--ink); font-weight: 700; width: 32%; }

.cta-band { background: linear-gradient(120deg, var(--navy-deep), var(--navy-soft)); border-radius: var(--radius); padding: 48px; text-align: center; color: #fff; }
.cta-band h2 { color: #fff; font-size: clamp(22px, 2.6vw, 28px); margin-bottom: 12px; }
.cta-band p { color: #c2d1e6; margin-bottom: 26px; }

.deal-grid { display: grid; gap: 16px; grid-template-columns: repeat(2, 1fr); }
.deal {
  border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; background: #fff;
  box-shadow: var(--shadow); transition: transform .15s, box-shadow .15s;
}
.deal:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.deal .deal-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 10px; }
.deal .deal-id { font-size: 12px; color: var(--muted); font-weight: 700; letter-spacing: .06em; }
.deal h4 { font-size: 16px; margin-bottom: 8px; }
.deal .meta { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.deal .meta span { font-size: 12px; background: var(--bg-tint); color: var(--steel); padding: 4px 10px; border-radius: 999px; }
.deal .status { font-size: 11.5px; font-weight: 700; padding: 4px 10px; border-radius: 999px; }
.status--open { background: #e7f4ec; color: #1f7a45; }
.status--talk { background: #fdf3e1; color: #9a6b12; }

/* search ext links */
.ext-search { display: grid; gap: 18px; grid-template-columns: repeat(2,1fr); }
.ext-card { border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; background: #fff; box-shadow: var(--shadow); }
.ext-card h3 { font-size: 17px; margin-bottom: 6px; display:flex; align-items:center; gap:8px; }
.ext-card p { color: var(--muted); font-size: 13.5px; margin-bottom: 16px; }
.ext-card form { display: flex; gap: 8px; }
.ext-card input { flex:1; border:1.5px solid var(--line); border-radius: var(--radius-sm); padding: 11px 13px; font-size:14px; font-family:inherit; }
.ext-card input:focus { outline:none; border-color: var(--steel); }

/* ---------- Footer ---------- */
.site-footer { background: var(--navy-deep); color: #9fb2cc; padding: 56px 0 28px; font-size: 14px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 32px; margin-bottom: 36px; }
.footer-brand .brand { color: #fff; margin-bottom: 12px; }
.footer-brand p { color: #8ba0bd; font-size: 13.5px; max-width: 28em; }
.site-footer h5 { color: #fff; font-size: 13px; letter-spacing: .1em; margin-bottom: 14px; text-transform: uppercase; }
.site-footer ul { list-style: none; display: grid; gap: 9px; }
.site-footer a { color: #9fb2cc; font-size: 13.5px; }
.site-footer a:hover { color: #fff; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); padding-top: 20px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; font-size: 12.5px; color: #7a8eaa; }

/* ---------- Utilities ---------- */
.center { text-align: center; }
.mt-s { margin-top: 14px; } .mt-m { margin-top: 28px; } .mt-l { margin-top: 44px; }
.mb-m { margin-bottom: 28px; }
.disclaimer { font-size: 12.5px; color: var(--muted); line-height: 1.8; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .grid-3 { grid-template-columns: 1fr; }
  .grid-2, .deal-grid, .ext-search, .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .nav-links, .nav-cta .btn { display: none; }
  .nav-toggle { display: block; }
  .nav-links.open {
    display: flex; flex-direction: column; gap: 0;
    position: absolute; top: 68px; left: 0; right: 0;
    background: #fff; border-bottom: 1px solid var(--line); padding: 8px 24px 16px;
  }
  .nav-links.open li { width: 100%; padding: 12px 0; border-bottom: 1px solid var(--line); }
  .section { padding: 60px 0; }
  .hero { padding: 72px 0 64px; }
  .cta-band { padding: 36px 24px; }
  .hero-search form { flex-direction: column; }
}
@media (max-width: 560px) {
  .footer-grid { grid-template-columns: 1fr; }
  .hero-stats { gap: 24px; }
}

/* =========================================================
   PREMIUM LAYER — 高級感・動的演出
   ========================================================= */

/* --- 上質なディスプレイ書体（見出しは明朝で格を出す） --- */
.hero h1, .pagehero h1, .section-head h2, .cta-band h2,
.kb-card h3, .article h1, .article h2 {
  font-family: var(--display);
  font-weight: 600;
  letter-spacing: .03em;
}
.hero h1, .pagehero h1 { font-weight: 600; }
.brand { letter-spacing: .01em; }
.eyebrow { font-family: var(--serif-en); font-style: normal; letter-spacing: .35em; font-weight: 600; font-size: 12.5px; }

/* --- ゴールドのヘアライン装飾 --- */
.eyebrow::before { content:""; display:inline-block; width:26px; height:1px; background:var(--gold-grad); vertical-align:middle; margin-right:12px; opacity:.9; }
.section-head { position: relative; }

/* gradient gold text accent */
.gold { background: var(--gold-grad); -webkit-background-clip:text; background-clip:text; color:transparent; }

/* --- ヘッダー：スクロールでガラス質感 --- */
.site-header { transition: background .3s, box-shadow .3s, border-color .3s; }
.site-header.scrolled { background: rgba(255,255,255,.85); box-shadow: 0 6px 24px rgba(14,37,69,.08); border-bottom-color: transparent; backdrop-filter: saturate(180%) blur(14px); }
.nav-links a { position: relative; }
.nav-links a::after { content:""; position:absolute; left:0; bottom:-6px; width:0; height:2px; background:var(--gold-grad); transition:width .25s ease; border-radius:2px; }
.nav-links a:hover::after { width:100%; }

/* --- ボタンを上質に --- */
.btn { border-radius: 999px; transition: all .22s cubic-bezier(.2,.7,.3,1); }
.btn--primary { background: linear-gradient(120deg, var(--steel), var(--navy)); box-shadow: 0 6px 18px rgba(46,111,176,.28); }
.btn--primary:hover { box-shadow: 0 10px 26px rgba(14,37,69,.34); transform: translateY(-2px); }
.btn--on-navy { box-shadow: 0 8px 22px rgba(0,0,0,.18); }
.btn--gold { background: var(--gold-grad); color: var(--navy-deep); font-weight: 800; box-shadow: 0 8px 22px rgba(201,162,39,.35); }
.btn--gold:hover { color: var(--navy-deep); transform: translateY(-2px); box-shadow: 0 12px 30px rgba(201,162,39,.45); }

/* --- カードを上質に（ゴールドの上辺・浮遊） --- */
.card { border-radius: var(--radius); position: relative; overflow: hidden; }
.card::before { content:""; position:absolute; top:0; left:0; right:0; height:3px; background:var(--gold-grad); transform:scaleX(0); transform-origin:left; transition:transform .35s ease; }
.card:hover::before { transform: scaleX(1); }
.card .ic { background: linear-gradient(140deg, var(--bg-tint), #fff); border:1px solid var(--line); }
.card:hover { box-shadow: var(--shadow-lg); }

/* --- 番号ステップを上質に --- */
.step .n { background: var(--navy); box-shadow: 0 6px 16px rgba(14,37,69,.25); position:relative; }
.step .n::after { content:""; position:absolute; inset:-3px; border-radius:50%; border:1px solid rgba(201,162,39,.45); }

/* --- セクション背景にクリーム面を追加できるように --- */
.section--cream { background: var(--bg-cream); }
.cta-band { background: radial-gradient(120% 140% at 0% 0%, var(--navy-soft), var(--navy-deep) 70%); position:relative; overflow:hidden; }
.cta-band::after { content:""; position:absolute; inset:0; background-image: radial-gradient(rgba(201,162,39,.12) 1px, transparent 1px); background-size: 26px 26px; mask-image: radial-gradient(60% 80% at 50% 0%, #000, transparent); }

/* =========================================================
   DYNAMIC HERO — 動的ヒーロー
   ========================================================= */
.hero { padding: 120px 0 96px; }
.hero-canvas { position:absolute; inset:0; width:100%; height:100%; z-index:0; }
.hero .container { position: relative; z-index: 2; }
.hero::before {
  content:""; position:absolute; inset:0; z-index:1; pointer-events:none;
  background:
    radial-gradient(900px 500px at 78% 8%, rgba(111,166,221,.20), transparent 60%),
    radial-gradient(700px 500px at 12% 90%, rgba(201,162,39,.12), transparent 60%);
  animation: auroraShift 16s ease-in-out infinite alternate;
}
@keyframes auroraShift {
  0% { transform: translate3d(0,0,0) scale(1); opacity:.9; }
  100% { transform: translate3d(-2%,1.5%,0) scale(1.08); opacity:1; }
}
.hero h1 { font-size: clamp(34px, 5vw, 58px); line-height: 1.26; }
.hero h1 .hl { background: var(--gold-grad); -webkit-background-clip:text; background-clip:text; color:transparent; }
.hero .lead { color:#cfdcef; }

/* glass search */
.hero-search { background: rgba(255,255,255,.94); backdrop-filter: blur(8px); border:1px solid rgba(255,255,255,.6); box-shadow: 0 24px 60px rgba(0,0,0,.28); }

/* badge row */
.hero-eyebrow { display:inline-flex; align-items:center; gap:10px; padding:7px 16px 7px 12px; border:1px solid rgba(255,255,255,.18); border-radius:999px; background:rgba(255,255,255,.06); color:#dfe9f7; font-size:12.5px; letter-spacing:.14em; margin-bottom:22px; backdrop-filter:blur(6px); }
.hero-eyebrow .dotmark { width:7px; height:7px; border-radius:50%; background:var(--accent-soft); box-shadow:0 0 0 4px rgba(201,162,39,.18); animation: pulse 2.4s ease-in-out infinite; }
@keyframes pulse { 0%,100%{ opacity:1 } 50%{ opacity:.35 } }

/* stats: gold numerals */
.hero-stat .num { font-family: var(--serif-en); font-size: 34px; line-height:1; background: var(--gold-grad); -webkit-background-clip:text; background-clip:text; color:transparent; }
.hero-stats { gap: 48px; }

/* floating accent orbs */
.orb { position:absolute; border-radius:50%; filter: blur(2px); z-index:1; pointer-events:none; opacity:.5; }
.orb--1 { width:10px; height:10px; background:var(--accent-soft); top:24%; left:62%; animation: float1 7s ease-in-out infinite; }
.orb--2 { width:7px; height:7px; background:var(--steel-light); top:62%; left:48%; animation: float2 9s ease-in-out infinite; }
.orb--3 { width:5px; height:5px; background:#fff; top:38%; left:84%; animation: float1 11s ease-in-out infinite; }
@keyframes float1 { 0%,100%{ transform: translateY(0) } 50%{ transform: translateY(-22px) } }
@keyframes float2 { 0%,100%{ transform: translateY(0) } 50%{ transform: translateY(18px) } }

/* =========================================================
   SCROLL REVEAL
   ========================================================= */
.reveal { opacity:0; transform: translateY(26px); transition: opacity .7s cubic-bezier(.2,.7,.3,1), transform .7s cubic-bezier(.2,.7,.3,1); will-change: opacity, transform; }
.reveal.in { opacity:1; transform: none; }
.reveal.d1 { transition-delay:.08s } .reveal.d2 { transition-delay:.16s } .reveal.d3 { transition-delay:.24s }
@media (prefers-reduced-motion: reduce) { .reveal { opacity:1; transform:none; transition:none } .hero::before,.orb,.hero-eyebrow .dotmark { animation:none } }

/* home teaser cards (knowledge / featured) */
.feature-band { background: linear-gradient(180deg, var(--bg-soft), #fff); }
.split { display:grid; grid-template-columns:1.05fr .95fr; gap:56px; align-items:center; }
@media (max-width:900px){ .split{ grid-template-columns:1fr; gap:32px } .hero{ padding:84px 0 64px } }