:root {
   --blue: #2f5bff;
   --ink: #0c1222;
  --muted: #8d939c;
  --bg: #ffffff;
  --sans: "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.5 var(--sans); }
a { color: inherit; }
img { display: block; width: 100%; }
button { font: inherit; }

.top {
  height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 28px;
  background: #fff;
  position: sticky;
  top: 0;
  z-index: 5;
}
 .logo {
   display: flex;
   align-items: center;
   gap: 10px;
   color: var(--ink);
   text-decoration: none;
   font-size: 20px;
   font-weight: 700;
   letter-spacing: 0.04em;
   line-height: 1;
 }
 .logo img { width: 36px; height: 36px; flex: none; }
 .logo small {
   display: block;
   margin-top: 4px;
   font-size: 11px;
   font-weight: 600;
   letter-spacing: 0.22em;
   opacity: 0.72;
 }
#nav { display: flex; align-items: center; gap: 28px; }
#nav a { color: var(--blue); text-decoration: none; font-size: 16px; }
.nav-toggle { display: none; border: 0; background: transparent; color: var(--blue); font-size: 28px; line-height: 1; }

.frame { padding: 0 18px; }
.hero {
  position: relative;
  border-radius: 18px;
  overflow: hidden;
  min-height: 78vh;
  background: #0d1a2b;
}
.hero img { height: 78vh; object-fit: cover; object-position: 68% 40%; }
.hero-copy {
  position: absolute;
  left: 48px;
  bottom: 48px;
  right: 42%;
  color: #fff;
  z-index: 1;
}
.hero h1 {
  margin: 0;
  font-size: clamp(48px, 6vw, 76px);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.12;
  text-shadow: 0 10px 32px rgba(0, 0, 0, 0.45);
}
.arrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 18px;
  color: #fff;
  text-decoration: none;
  font-size: 18px;
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 58%, rgba(6, 14, 28, 0.38) 100%);
  pointer-events: none;
}

.statement { padding: 128px 8vw 96px; }
.statement h2 {
  margin: 0;
  max-width: 18em;
  font-size: clamp(36px, 4.4vw, 56px);
  font-weight: 600;
  letter-spacing: -0.04em;
  line-height: 1.35;
}

.stage { padding: 12px 18px 72px; }
.stage.dark { background: #000; padding: 72px 18px; }
.shot {
  position: relative;
  display: block;
  max-width: 1120px;
  margin: 0 auto;
  border-radius: 18px;
  overflow: hidden;
  color: #fff;
  text-decoration: none;
  background: #1c2430;
}
.shot img { height: 70vh; object-fit: cover; }
.shot div {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 32px;
  background: radial-gradient(ellipse at center, rgba(0, 0, 0, 0.42), rgba(0, 0, 0, 0.05) 62%);
}
.shot h2 {
  margin: 0;
  font-size: clamp(44px, 5.4vw, 72px);
  font-weight: 600;
  letter-spacing: -0.03em;
  text-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
}
.shot p { margin: 14px 0 0; font-size: 22px; }
.shot span {
  margin-top: 28px;
  width: 44px;
  height: 44px;
  border: 1px solid #fff;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 20px;
}

.page-hero { padding: 12px 18px 0; }
.page-hero .shot { max-width: none; }
.page-hero .shot img { height: 68vh; }

.feature { max-width: 1120px; margin: 0 auto; padding: 96px 18px 24px; text-align: center; }
.feature h2 { margin: 0; font-size: clamp(36px, 4.4vw, 56px); font-weight: 600; letter-spacing: -0.03em; line-height: 1.25; }
.feature p { margin: 14px 0 40px; color: var(--muted); font-size: 20px; }
.feature img { border-radius: 18px; background: #f2f4f7; aspect-ratio: 3 / 2; object-fit: cover; }
.stage.dark .feature { color: #fff; }
.stage.dark .feature p { color: #a7adb7; }

.cards { max-width: 1120px; margin: 0 auto; padding: 96px 18px; text-align: center; }
.cards > h2 { margin: 0 0 48px; font-size: clamp(36px, 4.4vw, 56px); font-weight: 600; letter-spacing: -0.03em; line-height: 1.25; }
.cards ul { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; text-align: left; }
.cards img { border-radius: 18px; aspect-ratio: 4 / 5; object-fit: cover; background: #f2f4f7; }
.cards h3 { margin: 22px 0 6px; font-size: 26px; font-weight: 600; letter-spacing: -0.02em; }
.cards p { margin: 0; color: var(--muted); font-size: 17px; }
.stage.dark .cards { color: #fff; }
.stage.dark .cards p { color: #a7adb7; }

.steps { max-width: 1120px; margin: 0 auto; padding: 96px 18px; }
.steps > h2 { margin: 0 0 40px; text-align: center; font-size: clamp(36px, 4.4vw, 56px); font-weight: 600; letter-spacing: -0.03em; }
.steps ol { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; counter-reset: s; }
.steps li { counter-increment: s; border-top: 2px solid var(--blue); padding-top: 22px; }
.steps li::before { content: "0" counter(s); display: block; color: var(--blue); font-size: 15px; font-weight: 600; letter-spacing: 0.08em; }
.steps h3 { margin: 10px 0 6px; font-size: 26px; font-weight: 600; letter-spacing: -0.02em; }
.steps p { margin: 0; color: var(--muted); font-size: 17px; }
.contact { max-width: 1120px; margin: 0 auto; padding: 72px 20px 24px; text-align: center; scroll-margin-top: 80px; }
.contact h2 { margin: 0 0 18px; font-size: clamp(36px, 4.4vw, 56px); font-weight: 600; letter-spacing: -0.03em; }
.contact-tel { display: inline-block; color: var(--blue); text-decoration: none; font-size: clamp(32px, 4vw, 52px); font-weight: 600; letter-spacing: 0.02em; }
.contact p { margin: 14px 0 0; color: var(--muted); font-size: 18px; }
.nw { white-space: nowrap; }
 .lead {
   padding: 72px 8vw 24px;
   font-size: clamp(28px, 3vw, 40px);
   font-weight: 600;
   letter-spacing: -0.03em;
   line-height: 1.4;
   max-width: 22em;
 }
.big-links { padding: 12px 8vw 96px; }
.big-links a {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 28px 0;
  border-top: 1px solid #e6e8ec;
  color: var(--ink);
  text-decoration: none;
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 600;
  letter-spacing: -0.03em;
}
.big-links a:last-child { border-bottom: 1px solid #e6e8ec; color: var(--blue); }

 .footer {
   display: flex;
   flex-wrap: wrap;
   gap: 8px 18px;
   padding: 28px;
   color: var(--muted);
   font-size: 13px;
 }
 .footer a { color: inherit; text-decoration: none; }
 .footer a:hover { text-decoration: underline; }
.skip {
  position: absolute;
  left: 12px;
  top: -40px;
}
.skip:focus { top: 12px; background: #fff; z-index: 9; }

@media (max-width: 800px) {
  .top { padding: 0 16px; }
   .logo { font-size: 17px; }
   .logo img { width: 32px; height: 32px; }
   .logo small { font-size: 10px; letter-spacing: 0.16em; }
  .nav-toggle { display: block; }
  #nav {
    display: none;
    position: absolute;
    top: 76px;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    align-items: flex-start;
    padding: 8px 20px 18px;
    gap: 14px;
  }
  body.nav-open #nav { display: flex; }
  .hero-copy { left: 20px; right: 20px; bottom: 24px; }
  .hero img, .shot img, .page-hero .shot img { height: 62vh; }
  .statement, .lead, .big-links { padding-left: 20px; padding-right: 20px; }
  .cards, .steps { padding-top: 72px; padding-bottom: 72px; }
  .cards ul { grid-template-columns: 1fr; gap: 36px; }
  .cards img { aspect-ratio: 4 / 3; }
  .steps ol { grid-template-columns: 1fr 1fr; gap: 32px 18px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }