:root {
  --bg: #050505;
  --bg-soft: #0b0b0b;
  --text: #f5f5f5;
  --muted: #a7a7a7;
  --line: rgba(255,255,255,.12);
  --panel: rgba(255,255,255,.035);
  --panel-strong: rgba(255,255,255,.065);
  --panel-border: rgba(255,255,255,.10);
  --max-width: 1180px;
  --cursor-x: 50%;
  --cursor-y: 50%;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  min-height: 100vh;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.8;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

.page-bg,
.cursor-noise,
.topo-bg { position: fixed; inset: 0; pointer-events: none; }
.page-bg {
  z-index: 0;
  background:
    radial-gradient(circle at 15% 18%, rgba(255,255,255,.045), transparent 30%),
    radial-gradient(circle at 85% 28%, rgba(255,255,255,.025), transparent 34%),
    linear-gradient(180deg, #030303 0%, #0a0a0a 100%);
}
.page-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  opacity: .05;
  background-image:
    linear-gradient(rgba(255,255,255,.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.016) 1px, transparent 1px),
    radial-gradient(rgba(255,255,255,.025) .6px, transparent .9px);
  background-size: 3px 3px, 3px 3px, 8px 8px;
  mix-blend-mode: screen;
}
.cursor-noise { z-index: 1; }
.cursor-noise::before {
  content: "";
  position: absolute;
  left: var(--cursor-x);
  top: var(--cursor-y);
  width: 300px;
  height: 300px;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  opacity: .22;
  background:
    repeating-linear-gradient(0deg, rgba(255,255,255,.05) 0 1px, transparent 1px 3px),
    repeating-linear-gradient(90deg, rgba(255,255,255,.02) 0 1px, transparent 1px 4px),
    radial-gradient(circle, rgba(255,255,255,.08), rgba(255,255,255,.025) 45%, transparent 74%);
  mix-blend-mode: screen;
}
.topo-bg { z-index: 1; opacity: .28; mix-blend-mode: screen; }
.topo-bg svg { width: 100%; height: 100%; }
.topo-line { fill: none; stroke: rgba(255,255,255,.9); stroke-width: .8; vector-effect: non-scaling-stroke; }

.site-header, main, .footer { position: relative; z-index: 2; }
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 20;
  backdrop-filter: blur(14px);
  background: rgba(5,5,5,.72);
  border-bottom: 1px solid transparent;
  transition: background .2s ease, border-color .2s ease;
}
.site-header.scrolled { background: rgba(5,5,5,.9); border-color: var(--line); }
.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  font-size: 1.8rem;
  font-weight: 900;
  letter-spacing: -0.03em;
  text-transform: none;
  line-height: 1;
}

.brand img { width: 148px; opacity: .96; }
.nav-links { display: flex; gap: 22px; flex-wrap: wrap; justify-content: flex-end; }
.nav-links a { color: var(--muted); font-size: .84rem; letter-spacing: .12em; text-transform: uppercase; transition: color .2s ease; }
.nav-links a:hover { color: var(--text); }

.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
.hero { min-height: 100vh; display: grid; align-items: center; padding-top: 92px; }
.hero-inner { max-width: 980px; }
.eyebrow { color: var(--muted); font-size: .82rem; letter-spacing: .18em; text-transform: uppercase; margin-bottom: 14px; }
.hero h1, .page-hero h1 {
  font-size: clamp(3.4rem, 9vw, 8.2rem);
  line-height: .9;
  letter-spacing: -.06em;
  margin-bottom: 30px;
}
.lead { font-size: clamp(1.18rem, 2.2vw, 1.65rem); color: #efefef; margin-bottom: 18px; }
.hero-copy { max-width: 780px; color: #d8d8d8; font-size: clamp(1rem, 1.6vw, 1.12rem); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 22px;
  border: 1px solid rgba(255,255,255,.22);
  border-radius: 999px;
  color: #fff;
  transition: transform .2s ease, border-color .2s ease, background .2s ease;
}
.button:hover { transform: translateY(-2px); border-color: rgba(255,255,255,.48); background: rgba(255,255,255,.045); }
.button.primary { background: rgba(255,255,255,.92); color: #050505; border-color: rgba(255,255,255,.92); font-weight: 700; }
.button.primary:hover { background: #fff; }
.button.large { min-width: min(100%, 280px); }

.section { padding: 118px 0; scroll-margin-top: 86px; }
.section-head { margin-bottom: 42px; }
.section-title { font-size: clamp(2rem, 4.8vw, 4rem); line-height: 1.05; letter-spacing: -.045em; margin-bottom: 18px; }
.section-copy { max-width: 760px; color: var(--muted); }
.service-grid, .detail-grid, .sns-grid { display: grid; gap: 20px; }
.service-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.card {
  position: relative;
  overflow: hidden;
  padding: 28px;
  border: 1px solid var(--panel-border);
  border-radius: 24px;
  background: linear-gradient(180deg, var(--panel-strong), var(--panel));
  box-shadow: 0 24px 80px rgba(0,0,0,.28);
}
.card::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0;
  background: radial-gradient(circle at var(--cursor-x) var(--cursor-y), rgba(255,255,255,.10), transparent 34%);
  transition: opacity .2s ease;
}
.card:hover::before { opacity: 1; }
.card > * { position: relative; }
.card-number { color: var(--muted); font-size: .78rem; letter-spacing: .2em; margin-bottom: 38px; }
.card h3 { font-size: 1.32rem; margin-bottom: 14px; }
.card p, .card li { color: var(--muted); font-size: .96rem; }
.tag-wrap { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; }
.tag-wrap span {
  border: 1px solid rgba(255,255,255,.13);
  border-radius: 999px;
  padding: 5px 10px;
  color: #e8e8e8;
  font-size: .78rem;
}
.text-link { display: inline-flex; margin-top: 22px; color: #fff; border-bottom: 1px solid rgba(255,255,255,.42); }

.about-layout { display: grid; grid-template-columns: .9fr 1.1fr; gap: 52px; align-items: start; }
.about-copy { color: #e8e8e8; font-size: clamp(1.08rem, 1.8vw, 1.32rem); }
.about-copy p + p { margin-top: 28px; color: #d2d2d2; }
.contact-box { display: grid; grid-template-columns: 1fr auto; gap: 28px; align-items: center; padding: 34px; border: 1px solid var(--panel-border); border-radius: 28px; background: rgba(255,255,255,.035); }
.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: flex-end;
}

@media (max-width: 920px) {
  .contact-actions {
    justify-content: flex-start;
  }
}
.sns-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.sns-card { min-height: 160px; display: flex; flex-direction: column; justify-content: space-between; }
.sns-card span { color: var(--muted); letter-spacing: .12em; text-transform: uppercase; font-size: .8rem; }
.sns-card strong { font-size: clamp(1.4rem, 3vw, 2rem); }

.page-hero { min-height: 72vh; display: grid; align-items: end; padding-top: 128px; padding-bottom: 86px; }
.system-detail { padding-top: 0; }
.price-card { display: flex; align-items: center; justify-content: space-between; gap: 24px; margin-bottom: 20px; }
.price-card h2 { font-size: clamp(2rem, 5vw, 4rem); line-height: 1; letter-spacing: -.05em; margin-bottom: 18px; }
.price-card strong { color: #fff; }
.detail-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.detail-grid .wide { grid-column: 1 / -1; }
.check-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px 20px; list-style: none; margin-top: 10px; }
.check-list li::before { content: "—"; color: #fff; margin-right: 8px; }
.footer { padding: 30px 24px 42px; color: var(--muted); font-size: .84rem; border-top: 1px solid var(--line); }
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .7s ease, transform .7s ease; }
.reveal.is-visible { opacity: 1; transform: translateY(0); }

@media (max-width: 920px) {
  .service-grid, .about-layout, .contact-box, .detail-grid { grid-template-columns: 1fr; }
  .price-card { align-items: flex-start; flex-direction: column; }
  .hero { min-height: auto; padding-top: 150px; padding-bottom: 92px; }
  .page-hero { min-height: auto; padding-top: 150px; }
}
@media (max-width: 720px) {
  .nav-inner { align-items: flex-start; flex-direction: column; gap: 12px; }
  .nav-links { gap: 12px 16px; }
  .nav-links a { font-size: .76rem; }
  .section { padding: 88px 0; }
  .hero h1, .page-hero h1 { font-size: clamp(3rem, 17vw, 5.2rem); }
  .pc-only { display: none; }
  .sns-grid, .check-list { grid-template-columns: 1fr; }
  .card, .contact-box { padding: 22px; border-radius: 20px; }
}

.contact-mail-box {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 16px;
}

.copy-button {
  padding: 6px 12px;
  font-size: 0.8rem;
  background: transparent;
  color: #fff;
  border: 1px solid rgba(255,255,255,0.25);
  border-radius: 999px;
  cursor: pointer;
  transition: all .2s ease;
}

.copy-button:hover {
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.5);
}

.copy-button.copied {
  background: #fff;
  color: #000;
}

.pricing-card {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  align-items: center;
  gap: 32px;
  padding: 28px 32px;
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 22px;
  background: rgba(255,255,255,0.025);
}

.pricing-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.price-label {
  color: var(--muted);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.price-value {
  font-size: clamp(2.4rem, 5vw, 4rem);
  font-weight: 900;
  line-height: 1;
}

.price-unit,
.pricing-note {
  color: var(--muted);
  font-size: 0.92rem;
}

.pricing-note {
  max-width: 260px;
}

.featured-price {
  border-left: 1px solid rgba(255,255,255,0.12);
  padding-left: 32px;
}

@media (max-width: 820px) {
  .pricing-card {
    grid-template-columns: 1fr;
  }

  .featured-price {
    border-left: none;
    padding-left: 0;
    border-top: 1px solid rgba(255,255,255,0.12);
    padding-top: 20px;
  }
}