:root {
  --navy: #173f69;
  --navy-deep: #0e2b49;
  --blue: #2f6fa6;
  --sky: #eaf3fa;
  --paper: #ffffff;
  --ink: #1d2a35;
  --muted: #657383;
  --line: #d9e2ea;
  --soft: #f5f8fa;
  --accent: #d88a27;
  --ok: #2f7d50;
  --warn: #a86b14;
  --shadow: 0 12px 34px rgba(17, 43, 73, .10);
  --radius: 16px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Meiryo", "Yu Gothic UI", sans-serif;
  line-height: 1.75;
}
a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; }
.container { width: min(1120px, calc(100% - 40px)); margin: 0 auto; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255,255,255,.96);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  min-height: 74px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 26px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--navy-deep);
  font-weight: 800;
  letter-spacing: .04em;
}
.brand:hover { text-decoration: none; }
.brand-mark {
  width: 42px;
  height: 42px;
  position: relative;
  flex: 0 0 42px;
  background: url("../images/nekonote-paw.png") center / contain no-repeat;
}
.brand-mark::before,
.brand-mark::after,
.brand-mark span::before,
.brand-mark span::after {
  content: none;
  position: absolute;
  width: 11px;
  height: 14px;
  border-radius: 50%;
  background: var(--navy);
}
.brand-mark::before { left: 3px; top: 4px; transform: rotate(-22deg); }
.brand-mark::after { right: 3px; top: 4px; transform: rotate(22deg); }
.brand-mark span::before { left: 11px; top: 0; }
.brand-mark span::after { right: 11px; top: 0; }
.brand-mark i {
  display: none;
}
.brand-title { display: block; font-size: 1.18rem; line-height: 1.2; }
.brand-sub { display: block; font-weight: 500; font-size: .72rem; color: var(--muted); letter-spacing: .08em; margin-top: 3px; }

.nav { display: flex; align-items: center; gap: 23px; }
.nav a { color: #33475b; font-weight: 650; font-size: .94rem; }
.nav a[aria-current="page"] { color: var(--navy); }
.nav-cta {
  color: #fff !important;
  background: var(--navy);
  padding: 10px 17px;
  border-radius: 999px;
}
.nav-toggle { display: none; border: 0; background: transparent; font-size: 1.6rem; cursor: pointer; }

.hero {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 85% 15%, rgba(47,111,166,.18), transparent 30%),
    linear-gradient(135deg, #f8fbfd 0%, #edf5fb 52%, #ffffff 100%);
  border-bottom: 1px solid var(--line);
}
.hero-inner {
  min-height: 520px;
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  align-items: center;
  gap: 58px;
  padding: 72px 0;
}
.hero-product .hero-inner { min-height: 590px; }
.hero-product h1 { max-width: 760px; }
.intro-section { padding-top: 76px; }
.eyebrow { color: var(--blue); font-weight: 800; letter-spacing: .11em; font-size: .84rem; }
.hero h1 { font-size: clamp(2.35rem, 5vw, 4.25rem); line-height: 1.14; color: var(--navy-deep); margin: 12px 0 18px; letter-spacing: .01em; }
.hero-copy { font-size: 1.12rem; color: #435567; max-width: 690px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 21px;
  border: 1px solid var(--navy);
  border-radius: 10px;
  font-weight: 760;
  transition: .18s ease;
}
.btn-primary { background: var(--navy); color: #fff; }
.btn-primary:hover { background: var(--navy-deep); text-decoration: none; transform: translateY(-1px); }
.btn-secondary { background: #fff; color: var(--navy); }
.btn-secondary:hover { background: var(--sky); text-decoration: none; }
.btn-disabled { cursor: not-allowed; opacity: .62; background: #e7ebef; border-color: #bac5cf; color: #4c5a68; }

.console-card {
  background: #0e2b49;
  color: #fff;
  border-radius: 24px;
  box-shadow: 0 28px 70px rgba(14,43,73,.22);
  overflow: hidden;
  transform: rotate(1deg);
}
.console-titlebar { display: flex; align-items: center; gap: 7px; padding: 14px 18px; background: #0a2138; }
.console-titlebar span { width: 9px; height: 9px; border-radius: 50%; background: rgba(255,255,255,.4); }
.console-body { padding: 28px; }
.console-body h2 { margin: 0 0 6px; font-size: 1.35rem; }
.console-body p { margin: 0 0 22px; color: #c9d9e7; font-size: .94rem; }
.console-item { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 13px 0; border-top: 1px solid rgba(255,255,255,.14); }
.console-item:first-of-type { border-top: 0; }
.console-item strong { font-size: .95rem; }
.mini-badge { white-space: nowrap; padding: 4px 9px; border-radius: 999px; font-size: .74rem; font-weight: 800; background: rgba(255,255,255,.14); color: #dbe8f2; }

.section { padding: 84px 0; }
.section-soft { background: var(--soft); }
.section-head { max-width: 770px; margin-bottom: 34px; }
.section h2 { margin: 0 0 10px; color: var(--navy-deep); font-size: clamp(1.75rem, 3vw, 2.45rem); line-height: 1.35; }
.section-lead { color: var(--muted); margin: 0; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 27px;
  box-shadow: 0 4px 18px rgba(17,43,73,.04);
}
.card h3 { color: var(--navy-deep); margin: 5px 0 8px; font-size: 1.15rem; }
.card p { color: #5c6c7b; margin: 0; }
.icon-box { width: 46px; height: 46px; border-radius: 12px; display: grid; place-items: center; background: var(--sky); color: var(--navy); font-size: 1.25rem; font-weight: 900; }

.product-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.product-card { display: grid; grid-template-columns: auto 1fr auto; align-items: start; gap: 17px; }
.product-card .product-code { color: var(--muted); font-size: .75rem; letter-spacing: .06em; }
.product-card h3 { margin: 2px 0 6px; }
.status { display: inline-flex; align-items: center; border-radius: 999px; padding: 5px 10px; font-size: .75rem; font-weight: 800; white-space: nowrap; }
.status-dev { background: #fff3dd; color: #83540d; }
.status-plan { background: #e9f2fb; color: #275d8a; }
.status-ready { background: #e9f5ed; color: #27633e; }
.detail-pending { display: inline-block; margin-top: 13px; color: var(--blue); font-size: .88rem; font-weight: 760; }

.notice {
  border: 1px solid #e7d4b3;
  border-left: 5px solid var(--accent);
  background: #fffaf1;
  border-radius: 10px;
  padding: 18px 20px;
  color: #6d552d;
}
.notice strong { color: #69480e; }
.contact-callout { display: flex; align-items: center; justify-content: space-between; gap: 28px; padding: 24px 26px; border: 1px solid #bcd1e3; border-radius: 14px; background: var(--sky); }
.contact-callout strong { display: block; color: var(--navy-deep); font-size: 1.1rem; }
.contact-callout p { margin: 4px 0 0; color: #50677a; }

.contact-layout { display: grid; grid-template-columns: .72fr 1.28fr; align-items: start; gap: 48px; }
.contact-intro h2 { margin: 0 0 12px; color: var(--navy-deep); }
.contact-intro > p { color: var(--muted); }
.contact-form { padding: 30px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; box-shadow: var(--shadow); }
.form-field { margin-bottom: 20px; }
.form-field label { display: block; margin-bottom: 7px; color: var(--navy-deep); font-weight: 760; }
.form-field input, .form-field textarea { width: 100%; border: 1px solid #b9c7d3; border-radius: 9px; padding: 11px 12px; background: #fff; color: var(--ink); font: inherit; line-height: 1.5; }
.form-field textarea { min-height: 180px; resize: vertical; }
.form-field input:focus, .form-field textarea:focus { outline: 3px solid rgba(47,111,166,.17); border-color: var(--blue); }
.required { display: inline-block; margin-left: 6px; padding: 2px 6px; border-radius: 5px; background: #fff0e3; color: #9a4d0a; font-size: .72rem; vertical-align: 1px; }
.form-note { color: var(--muted); font-size: .86rem; }
.form-submit { margin-top: 7px; min-width: 230px; }
.form-trap { position: absolute !important; left: -10000px !important; width: 1px !important; height: 1px !important; overflow: hidden !important; }
.result-wrap { max-width: 760px; }
.contact-result { padding: 38px; }
.contact-result h1 { color: var(--navy-deep); margin: 8px 0 12px; font-size: clamp(1.8rem, 4vw, 2.5rem); }
.contact-result p { color: var(--muted); }
.result-success { border-top: 5px solid var(--ok); }
.result-error { border-top: 5px solid var(--accent); }

.product-showcase { scroll-margin-top: 74px; }
.product-showcase > .container {
  display: grid;
  grid-template-columns: minmax(280px, .72fr) minmax(0, 1.28fr);
  gap: 42px;
  align-items: center;
}
.observation-showcase > .container { grid-template-columns: minmax(0, 1.28fr) minmax(280px, .72fr); }
.observation-showcase .showcase-copy { order: 2; }
.observation-showcase .product-visual { order: 1; }
.showcase-copy h2 { margin-top: 7px; }
.showcase-lead { color: #4f6273; font-size: 1.04rem; margin: 0 0 22px; }
.feature-list { margin: 0; padding: 0; list-style: none; display: grid; gap: 10px; }
.feature-list li { position: relative; padding-left: 27px; color: #42586b; }
.feature-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: .68em;
  width: 10px;
  height: 6px;
  border-left: 3px solid var(--blue);
  border-bottom: 3px solid var(--blue);
  transform: rotate(-45deg);
}
.product-visual { margin: 0; background: #fff; border: 1px solid var(--line); border-radius: 18px; overflow: hidden; box-shadow: var(--shadow); }
.product-visual img { display: block; width: 100%; height: auto; }
.product-visual figcaption { padding: 11px 16px; border-top: 1px solid var(--line); color: var(--muted); font-size: .82rem; }
.observation-types { display: grid; gap: 11px; }
.observation-types div { border-left: 4px solid var(--blue); background: var(--sky); padding: 12px 14px; border-radius: 0 10px 10px 0; }
.observation-types strong, .observation-types span { display: block; }
.observation-types strong { color: var(--navy-deep); }
.observation-types span { color: #536a7d; font-size: .9rem; margin-top: 2px; }

.page-hero { padding: 68px 0 52px; background: linear-gradient(135deg,#f5f9fc,#edf4fa); border-bottom: 1px solid var(--line); }
.page-hero h1 { color: var(--navy-deep); font-size: clamp(2rem,4vw,3.15rem); margin: 0 0 12px; }
.page-hero p { color: var(--muted); max-width: 760px; margin: 0; }

.download-box { display: grid; grid-template-columns: 1fr auto; gap: 28px; align-items: center; padding: 28px; border-radius: var(--radius); border: 1px solid var(--line); background: #fff; }
.download-box h3 { color: var(--navy-deep); margin: 0 0 6px; }
.download-meta { font-size: .9rem; color: var(--muted); }

.steps { counter-reset: step; display: grid; gap: 16px; }
.step { position: relative; padding: 24px 24px 24px 78px; border: 1px solid var(--line); border-radius: 14px; background: #fff; }
.step::before { counter-increment: step; content: counter(step); position: absolute; left: 22px; top: 22px; width: 38px; height: 38px; display: grid; place-items: center; border-radius: 50%; background: var(--navy); color: #fff; font-weight: 800; }
.step h3 { margin: 0 0 5px; color: var(--navy-deep); }
.step p { margin: 0; color: var(--muted); }

.faq { border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); padding: 18px 0; }
.faq summary { cursor: pointer; font-weight: 760; color: var(--navy-deep); }
.faq p { color: var(--muted); margin: 12px 0 0; }

.site-footer { background: #0c263f; color: #cfdae4; padding: 46px 0 26px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; }
.site-footer h3, .site-footer h4 { color: #fff; margin-top: 0; }
.site-footer a { color: #dcebf7; }
.footer-small { border-top: 1px solid rgba(255,255,255,.13); margin-top: 34px; padding-top: 20px; font-size: .82rem; color: #9eb2c4; }

.kicker { font-size: .84rem; text-transform: uppercase; letter-spacing: .09em; font-weight: 800; color: var(--blue); }
.list-clean { padding: 0; margin: 0; list-style: none; }
.list-clean li { margin: 8px 0; }
.muted { color: var(--muted); }
.small { font-size: .88rem; }
.center { text-align: center; }
.mt-24 { margin-top: 24px; }
.mt-36 { margin-top: 36px; }

@media (max-width: 860px) {
  .hero-inner { grid-template-columns: 1fr; min-height: auto; gap: 42px; padding: 56px 0; }
  .console-card { transform: none; }
  .grid-3, .product-grid, .footer-grid { grid-template-columns: 1fr; }
  .nav-toggle { display: block; }
  .nav {
    display: none;
    position: absolute;
    left: 20px;
    right: 20px;
    top: 70px;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 12px;
    box-shadow: var(--shadow);
  }
  .nav.is-open { display: flex; }
  .nav a { padding: 12px; }
  .nav-cta { text-align: center; margin-top: 5px; }
  .download-box { grid-template-columns: 1fr; }
  .contact-layout { grid-template-columns: 1fr; }
  .contact-callout { align-items: flex-start; flex-direction: column; }
  .product-showcase > .container,
  .observation-showcase > .container { grid-template-columns: 1fr; }
  .observation-showcase .showcase-copy,
  .observation-showcase .product-visual { order: initial; }
}

@media (max-width: 520px) {
  .container { width: min(100% - 28px, 1120px); }
  .section { padding: 62px 0; }
  .header-inner { min-height: 66px; }
  .brand-sub { display: none; }
  .product-card { grid-template-columns: auto 1fr; }
  .product-card .status { grid-column: 2; justify-self: start; }
  .hero-actions .btn { width: 100%; }
}