:root {
  --yellow: #ffcd00;
  --orange: #ff6720;
  --black: #19140f;
  --ink: #24302b;
  --muted: #70675f;
  --paper: #fffaf2;
  --cream: #f7efe2;
  --line: #e7dccd;
  --white: #fff;
  --max: 1180px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--white); font-family: "DM Sans", sans-serif; line-height: 1.6; }
a { color: inherit; text-decoration: none; }
.container { width: min(calc(100% - 40px), var(--max)); margin: 0 auto; }
.detail-hero { min-height: 600px; position: relative; display: flex; align-items: flex-end; padding: 120px 0 90px; color: var(--white); background: var(--hero-image) center/cover; }
.detail-hero::before { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(0,0,0,.72), rgba(0,0,0,.18)), linear-gradient(0deg, rgba(0,0,0,.55), transparent 65%); }
.detail-nav { position: absolute; z-index: 2; inset: 0 0 auto; height: 82px; display: flex; align-items: center; justify-content: space-between; color: var(--white); }
.brand { display: flex; align-items: center; gap: 10px; font-size: 22px; font-weight: 700; }
.brand-mark { color: var(--yellow); font-size: 25px; }
.brand > span:last-child > span { color: var(--yellow); }
.back-link { font-size: 13px; font-weight: 700; }
.detail-hero-content { position: relative; z-index: 1; max-width: 720px; }
.kicker { color: var(--yellow); font-size: 12px; font-weight: 700; letter-spacing: .18em; text-transform: uppercase; }
h1, h2, h3 { font-family: "Playfair Display", serif; line-height: 1.05; margin: 0; }
h1 { font-size: clamp(56px, 9vw, 106px); letter-spacing: -.05em; margin: 18px 0; }
h2 { font-size: clamp(38px, 5vw, 64px); }
h2 span { color: var(--orange); }
.detail-hero p { color: rgba(255,255,255,.86); font-size: 18px; max-width: 590px; margin: 0 0 28px; }
.btn { display: inline-flex; align-items: center; gap: 10px; border: 0; border-radius: 999px; padding: 14px 22px; font-weight: 700; }
.btn-primary { background: var(--yellow); color: var(--black); }
.quick-info { display: grid; grid-template-columns: repeat(4, 1fr); background: var(--orange); color: var(--white); }
.info-card { padding: 24px 28px; border-right: 1px solid rgba(255,255,255,.3); font-size: 13px; font-weight: 700; text-align: center; }
.info-card:last-child { border: 0; }
.section { padding: 92px 0; }
.overview-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 80px; }
.section p { color: var(--muted); font-size: 17px; max-width: 680px; }
.detail-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 38px; }
.detail-card { border: 1px solid var(--line); background: var(--white); border-radius: 18px; overflow: hidden; }
.detail-card img { width: 100%; height: 210px; display: block; object-fit: cover; }
.detail-card-body { padding: 22px; }
.detail-card h3 { font-size: 27px; }
.detail-card p { font-size: 14px; margin-bottom: 0; }
.soft { background: var(--paper); }
.timeline { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 38px; }
.step { padding: 28px; background: var(--white); border-top: 3px solid var(--orange); }
.step strong { color: var(--orange); font-size: 12px; letter-spacing: .12em; text-transform: uppercase; }
.step p { font-size: 15px; }
.faq { max-width: 820px; margin-top: 35px; }
details { border-bottom: 1px solid var(--line); padding: 20px 0; }
summary { cursor: pointer; font-family: "Playfair Display", serif; font-size: 22px; }
details p { font-size: 15px; margin-bottom: 0; }
.detail-cta { padding: 85px 20px; background: var(--cream); text-align: center; }
.detail-cta h2 { margin-bottom: 28px; }
.sticky-plan { position: fixed; right: 24px; bottom: 88px; z-index: 4; box-shadow: 0 12px 30px rgba(0,0,0,.18); }
.detail-footer { display: flex; justify-content: space-between; padding: 24px 0; background: var(--black); color: var(--white); font-size: 12px; }
.back-to-top { position: fixed; right: 24px; bottom: 24px; z-index: 5; width: 48px; height: 48px; border: 0; border-radius: 50%; background: var(--black); color: var(--yellow); font-size: 22px; cursor: pointer; opacity: 0; visibility: hidden; transition: .2s; }
.back-to-top.show { opacity: 1; visibility: visible; }
@media (max-width: 760px) {
  .detail-hero { min-height: 620px; }
  .quick-info, .overview-grid, .detail-grid, .timeline { grid-template-columns: 1fr; }
  .info-card { border-right: 0; border-bottom: 1px solid rgba(255,255,255,.3); }
  .overview-grid { gap: 28px; }
  .detail-footer { display: block; }
  .detail-footer span { display: block; margin: 5px 0; }
  .sticky-plan { right: 16px; bottom: 80px; padding: 12px 16px; font-size: 12px; }
}