/* Dựa trên nhận diện Bài 3 (SIV): đỏ chủ đạo, chữ Be Vietnam Pro, khối nghiêng 12°; bản tươi sáng: đỏ san hô + cam đào trên nền trắng hồng */
:root {
  --red: #ef2b45;
  --red-ink: #c41630;
  --black: #2b2b2b;
  --peach: #ff8a5b;
  --ink: #1b1b1b;
  --muted: #5e5e5e;
  --line: #e6e6e6;
  --bg: #ffffff;
  --soft: #fff3f4;
  --ok: #157a3c;
  --radius: 14px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font-family: "Be Vietnam Pro", "Segoe UI", Arial, sans-serif;
  font-size: 16px; line-height: 1.6;
}
a { color: var(--red-ink); }
img { max-width: 100%; display: block; }
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 16px; }

/* Khối nghiêng 12° đặc trưng */
.skew { display: inline-block; transform: skewX(-12deg); background: var(--red); color: #fff; padding: 4px 14px; font-weight: 800; letter-spacing: .04em; text-transform: uppercase; font-size: 13px; }
.skew > span { display: inline-block; transform: skewX(12deg); }
.skew.dark { background: var(--peach); }

/* Thanh trên */
.topbar { position: sticky; top: 0; z-index: 20; background: rgba(255,255,255,.94); backdrop-filter: blur(8px); border-bottom: 1px solid #ffe0e4; color: var(--ink); }
.topbar .wrap { display: flex; align-items: center; gap: 12px; height: 56px; }
.logo { color: var(--ink); text-decoration: none; font-weight: 800; font-size: 18px; letter-spacing: .02em; white-space: nowrap; }
.logo b { color: var(--red); }
.nav { margin-left: auto; display: flex; gap: 2px; overflow-x: auto; scrollbar-width: none; }
.nav::-webkit-scrollbar { display: none; }
.nav a { color: #555; text-decoration: none; font-size: 14px; padding: 6px 10px; border-radius: 6px; white-space: nowrap; }
.nav a:hover { color: var(--red-ink); background: var(--soft); }
.nav a.cta { background: var(--red); color: #fff; font-weight: 700; }

/* Nút */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; border: 0; cursor: pointer; font: inherit; font-weight: 700; text-decoration: none; padding: 12px 22px; border-radius: 8px; background: var(--red); color: #fff; min-height: 46px; }
.btn:hover { background: var(--red-ink); }
.btn.ghost { background: #fff; color: var(--red-ink); box-shadow: inset 0 0 0 2px var(--red); }
.btn.ghost:hover { background: var(--soft); }
.btn:disabled { opacity: .5; cursor: not-allowed; }

/* Đầu trang */
.hero { padding: 48px 0 40px; background: radial-gradient(circle at 85% 10%, #ffe1d6 0, transparent 45%), linear-gradient(180deg, var(--soft), #fff); }
.hero-grid { display: grid; grid-template-columns: 280px 1fr; gap: 48px; align-items: center; }
.photo-box { position: relative; }
.photo-box::before { content: ""; position: absolute; inset: 14px -14px -14px 14px; background: linear-gradient(135deg, var(--red), var(--peach)); transform: skewX(-6deg); z-index: 0; }
.photo-box img { position: relative; z-index: 1; width: 100%; height: auto; aspect-ratio: 4/5; object-fit: cover; }
h1 { font-size: clamp(32px, 6vw, 54px); line-height: 1.08; margin: 14px 0 10px; letter-spacing: -.02em; font-weight: 800; }
.lead { font-size: clamp(16px, 2.2vw, 18px); color: #333; max-width: 62ch; margin: 0 0 22px; }
.actions { display: flex; flex-wrap: wrap; gap: 10px; }

/* Dải số liệu */
.stats { background: linear-gradient(110deg, var(--red), var(--peach)); color: #fff; padding: 28px 0; }
.stats .wrap { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.stat .n { font-size: clamp(24px, 4vw, 34px); font-weight: 800; color: #fff; line-height: 1.1; }
.stat .n i { font-style: normal; color: #fff4c7; }
.stat .l { font-size: 13px; color: rgba(255,255,255,.92); margin-top: 4px; }

/* Mục */
section { padding: 56px 0; }
section.alt { background: var(--soft); }
.sec-head { margin-bottom: 26px; }
h2 { font-size: clamp(24px, 4vw, 32px); margin: 10px 0 6px; letter-spacing: -.01em; line-height: 1.2; }
.sec-head p { margin: 0; color: var(--muted); max-width: 64ch; }

.grid { display: grid; gap: 16px; }
.g3 { grid-template-columns: repeat(3, 1fr); }
.g2 { grid-template-columns: repeat(2, 1fr); }
.card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; position: relative; overflow: hidden; }
.card h3 { margin: 0 0 8px; font-size: 18px; line-height: 1.35; }
.card p { margin: 0 0 10px; color: #444; font-size: 15px; }
.card .ic { font-size: 26px; line-height: 1; margin-bottom: 10px; }
.card .tag { font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }
.card .proof { display: inline-block; font-size: 13px; font-weight: 700; color: var(--red-ink); background: #fdecec; padding: 4px 10px; border-radius: 6px; }
.card .links { display: flex; flex-wrap: wrap; gap: 6px 14px; margin-top: 6px; font-size: 14px; font-weight: 600; }
.card .links a { text-decoration: none; }
.card .links a:hover { text-decoration: underline; }
.card.edge::after { content: ""; position: absolute; top: 0; left: 0; width: 6px; height: 100%; background: var(--red); }

/* Gói tư vấn */
.price { font-size: 30px; font-weight: 800; color: var(--black); line-height: 1.1; margin: 6px 0 2px; }
.price small { font-size: 14px; color: var(--muted); font-weight: 600; }
.pk { display: flex; flex-direction: column; }
.pk ul { margin: 10px 0 18px; padding-left: 18px; color: #444; font-size: 15px; }
.pk .btn { margin-top: auto; }
.pk.hot { border: 2px solid var(--red); }
.pk.hot .ribbon { position: absolute; top: 14px; right: -34px; transform: rotate(35deg); background: var(--red); color: #fff; font-size: 11px; font-weight: 800; padding: 3px 40px; text-transform: uppercase; }

/* Đặt lịch */
.booking { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.step { margin-bottom: 22px; }
.step-t { font-weight: 800; margin-bottom: 10px; display: flex; gap: 10px; align-items: center; }
.step-t .num { width: 26px; height: 26px; border-radius: 50%; background: var(--red); color: #fff; display: grid; place-items: center; font-size: 13px; flex: none; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { font: inherit; font-size: 14px; font-weight: 600; padding: 9px 14px; border-radius: 8px; border: 1.5px solid var(--line); background: #fff; color: var(--ink); cursor: pointer; min-height: 42px; }
.chip:hover { border-color: var(--red); }
.chip[aria-pressed="true"] { background: var(--red); color: #fff; border-color: var(--red); }
.chip small { display: block; font-weight: 500; font-size: 12px; opacity: .75; }
.days { flex-wrap: nowrap; overflow-x: auto; padding-bottom: 4px; scrollbar-width: thin; }
.days .chip { flex: none; text-align: center; min-width: 76px; }
.form { display: grid; gap: 12px; grid-template-columns: 1fr 1fr; }
.form label { display: grid; gap: 4px; font-size: 14px; font-weight: 600; }
.form .full { grid-column: 1 / -1; }
.form input, .form textarea { font: inherit; font-size: 16px; padding: 11px 12px; border: 1.5px solid var(--line); border-radius: 8px; width: 100%; background: #fff; color: var(--ink); }
.form input:focus, .form textarea:focus { outline: 2px solid var(--red); border-color: var(--red); }
.form .hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.note { font-size: 13px; color: var(--muted); }
.err { color: var(--red-ink); font-weight: 600; font-size: 14px; min-height: 1.2em; }
.empty { color: var(--muted); font-size: 15px; padding: 8px 0; }

.pay { display: grid; grid-template-columns: 260px 1fr; gap: 24px; align-items: start; }
.qr { background: #fff; padding: 12px; border: 1px solid var(--line); border-radius: 12px; display: grid; place-items: center; }
.qr img, .qr canvas { width: 100% !important; height: auto !important; max-width: 236px; }
.kv { display: grid; grid-template-columns: auto 1fr auto; gap: 8px 12px; align-items: center; font-size: 15px; }
.kv .k { color: var(--muted); font-size: 14px; }
.kv .v { font-weight: 700; word-break: break-word; }
.copy { font: inherit; font-size: 12px; font-weight: 700; border: 1px solid var(--line); background: #fff; border-radius: 6px; padding: 4px 8px; cursor: pointer; }
.timer { font-size: 15px; margin: 14px 0 0; padding: 10px 12px; background: #fff6e5; border-radius: 8px; }
.done { padding: 18px; border-radius: 12px; background: #e9f7ef; color: #0c4f27; }
.done h3 { margin: 0 0 6px; }
.expired { padding: 18px; border-radius: 12px; background: #fdecec; color: #7a0000; }

/* Đồ dùng */
.disclose { font-size: 14px; background: var(--soft); border-left: 4px solid var(--red); padding: 10px 14px; border-radius: 6px; color: #333; }
.item { display: flex; flex-direction: column; }
.item img { width: 100%; aspect-ratio: 1; object-fit: cover; border-radius: 10px; margin-bottom: 12px; background: var(--soft); }
.item .btn { margin-top: auto; }

footer { background: var(--soft); color: #555; padding: 32px 0; font-size: 14px; border-top: 1px solid #ffe0e4; }
footer a { color: var(--red-ink); font-weight: 600; }
footer .wrap { display: flex; flex-wrap: wrap; gap: 12px 24px; justify-content: space-between; align-items: center; }

@media (max-width: 860px) {
  .g3 { grid-template-columns: 1fr 1fr; }
  .stats .wrap { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 680px) {
  .nav a:not(.cta) { display: none; }
  .hero { padding: 28px 0 32px; }
  .hero-grid { grid-template-columns: 1fr; gap: 28px; }
  .photo-box { max-width: 230px; margin: 0 auto; }
  .g3, .g2, .form, .pay { grid-template-columns: 1fr; }
  section { padding: 40px 0; }
  .card, .booking { padding: 18px; }
  .actions .btn { flex: 1 1 auto; }
  .qr { max-width: 260px; margin: 0 auto; }
}