/* Sương Mai Spa — mềm mại, thoáng, serif thanh lịch. */
:root {
  --cream: #faf5ef;
  --paper: #fffdf9;
  --blush: #f4e4dd;
  --blush-deep: #ecd3c9;
  --rose: #8a4f57;
  --rose-dark: #6c3941;
  --ink: #33262a;
  --muted: #66565a;
  --sage: #6f7f60;
  --line: #e7d7cf;
  --serif: "Cormorant Garamond", "Times New Roman", serif;
  --sans: "Mulish", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  --radius: 22px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0; background: var(--cream); color: var(--ink);
  font: 400 16.5px/1.65 var(--sans); overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
a { color: var(--rose-dark); }
h1, h2, h3 { font-family: var(--serif); font-weight: 600; line-height: 1.12; margin: 0 0 .5em; color: var(--ink); }
h2 { font-size: clamp(2.1rem, 5.5vw, 3.2rem); }
h3 { font-size: 1.5rem; }
p { margin: 0 0 1em; }
:focus-visible { outline: 3px solid var(--rose); outline-offset: 3px; border-radius: 6px; }

.wrap { width: 100%; max-width: 1160px; margin: 0 auto; padding: 0 20px; }
.skip { position: absolute; left: 12px; top: -60px; z-index: 100; padding: 10px 16px; background: var(--ink); color: #fff; border-radius: 10px; }
.skip:focus { top: 12px; }

.eyebrow {
  margin: 0 0 .8rem; font: 700 .78rem/1.3 var(--sans); letter-spacing: .18em; text-transform: uppercase; color: var(--sage);
}

/* Nút */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 50px; padding: 0 26px;
  border-radius: 999px; border: 1.5px solid transparent; font: 700 15px/1.2 var(--sans); text-decoration: none; cursor: pointer;
  transition: background .2s, color .2s, border-color .2s, transform .2s;
}
.btn:hover { transform: translateY(-1px); }
.btn-solid { background: var(--rose); color: #fff; }
.btn-solid:hover { background: var(--rose-dark); }
.btn-ghost { border-color: var(--rose); color: var(--rose-dark); background: transparent; }
.btn-ghost:hover { background: var(--blush); }
.btn-light { background: #fff; color: var(--rose-dark); }
.btn-light:hover { background: var(--blush); }
.btn-sm { min-height: 44px; padding: 0 20px; font-size: 14px; }

/* Đầu trang */
.site-header {
  position: sticky; top: 0; z-index: 40; background: rgba(250, 245, 239, .92);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 68px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--rose); text-decoration: none; }
.brand-mark { width: 34px; height: 34px; }
.brand-text { display: flex; flex-direction: column; line-height: 1; }
.brand-name { font: 600 1.6rem/1 var(--serif); color: var(--ink); }
.brand-sub { font: 600 .66rem/1.4 var(--sans); letter-spacing: .2em; text-transform: uppercase; color: var(--muted); margin-top: 3px; }

.nav-toggle {
  display: inline-flex; align-items: center; gap: 10px; min-height: 44px; padding: 0 14px; border: 1px solid var(--line);
  border-radius: 999px; background: var(--paper); color: var(--ink); font: 700 14px var(--sans); cursor: pointer;
}
.nav-toggle-bars, .nav-toggle-bars::before, .nav-toggle-bars::after {
  display: block; width: 18px; height: 1.6px; background: currentColor; border-radius: 2px; position: relative; transition: transform .2s;
}
.nav-toggle-bars::before, .nav-toggle-bars::after { content: ""; position: absolute; left: 0; }
.nav-toggle-bars::before { top: -6px; }
.nav-toggle-bars::after { top: 6px; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::before { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::after { transform: translateY(-6px) rotate(-45deg); }

.site-nav {
  display: none; position: absolute; left: 0; right: 0; top: 100%; padding: 12px 20px 22px;
  background: var(--paper); border-bottom: 1px solid var(--line); box-shadow: 0 20px 40px rgba(51, 38, 42, .08);
}
.site-nav.is-open { display: block; }
.site-nav ul { list-style: none; margin: 0 0 14px; padding: 0; }
.site-nav li a {
  display: flex; align-items: center; min-height: 48px; color: var(--ink); text-decoration: none; font-weight: 600;
  border-bottom: 1px solid var(--line);
}
.site-nav .btn { width: 100%; }

@media (min-width: 900px) {
  .nav-toggle { display: none; }
  .site-nav { display: flex; position: static; align-items: center; gap: 26px; padding: 0; background: none; border: 0; box-shadow: none; }
  .site-nav ul { display: flex; gap: 24px; margin: 0; }
  .site-nav li a { min-height: 44px; border: 0; font-size: 15px; color: var(--muted); }
  .site-nav li a:hover { color: var(--rose-dark); }
  .site-nav .btn { width: auto; }
}

/* Hero */
.hero { padding: 40px 0 64px; background: radial-gradient(900px 500px at 90% 0%, var(--blush) 0%, transparent 70%); }
.hero-grid { display: grid; gap: 40px; align-items: center; }
.hero h1 { font-size: clamp(2.7rem, 10vw, 4.9rem); font-weight: 600; letter-spacing: -.01em; line-height: 1.02; }
.hero h1 em { font-style: italic; color: var(--rose); font-weight: 500; }
.lead { font-size: 1.08rem; color: var(--muted); max-width: 34em; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 26px 0 32px; }
.hero-facts { list-style: none; margin: 0; padding: 22px 0 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; border-top: 1px solid var(--line); }
.hero-facts strong { display: block; font: 600 1.45rem/1.1 var(--serif); color: var(--ink); }
.hero-facts span { font-size: .82rem; color: var(--muted); line-height: 1.35; display: block; margin-top: 4px; }

.hero-art { position: relative; margin: 0 auto; width: 100%; max-width: 440px; }
.arch {
  border-radius: 220px 220px 28px 28px; overflow: hidden; aspect-ratio: 400 / 520;
  box-shadow: 0 40px 80px -30px rgba(108, 57, 65, .45); border: 8px solid var(--paper);
}
.arch svg { width: 100%; height: 100%; }
.hero-badge {
  position: absolute; left: -6px; bottom: 34px; display: flex; flex-direction: column; padding: 16px 20px; max-width: 170px;
  background: var(--paper); border-radius: 18px; box-shadow: 0 18px 40px -12px rgba(51, 38, 42, .3); font-size: .86rem; color: var(--muted); line-height: 1.35;
}
.hero-badge-big { font: 700 2.2rem/1 var(--serif); color: var(--rose); margin-bottom: 4px; }

@media (min-width: 900px) {
  .hero { padding: 72px 0 96px; }
  .hero-grid { grid-template-columns: 1.1fr .9fr; gap: 64px; }
  .hero-badge { left: -48px; }
}

/* Khung section */
.section { padding: 72px 0; }
.section-head { max-width: 640px; margin-bottom: 40px; }
.section-head p:not(.eyebrow) { color: var(--muted); }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
@media (min-width: 900px) { .section { padding: 104px 0; } }

/* Dịch vụ */
.service-grid { display: grid; gap: 18px; }
.service {
  display: flex; flex-direction: column; padding: 30px 26px; background: var(--paper); border: 1px solid var(--line);
  border-radius: var(--radius); transition: transform .25s, box-shadow .25s;
}
.service:hover { transform: translateY(-3px); box-shadow: 0 24px 50px -28px rgba(108, 57, 65, .4); }
.service-icon { width: 46px; height: 46px; color: var(--rose); margin-bottom: 18px; }
.service p { color: var(--muted); font-size: .97rem; }
.service-price { margin-top: auto; color: var(--ink) !important; }
.service-price strong { font: 700 1.35rem var(--serif); color: var(--rose-dark); }
.link-arrow {
  display: inline-flex; align-items: center; min-height: 44px; font-weight: 700; font-size: .92rem; color: var(--rose-dark);
  text-decoration: underline; text-decoration-color: var(--blush-deep); text-underline-offset: 5px; text-decoration-thickness: 2px;
}
.link-arrow::after { content: "→"; margin-left: 8px; transition: transform .2s; }
.link-arrow:hover::after { transform: translateX(4px); }
@media (min-width: 640px) { .service-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1040px) { .service-grid { grid-template-columns: repeat(4, 1fr); } }

/* Bảng giá */
.pricing { background: var(--paper); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.menu-card {
  display: grid; gap: 40px; padding: 36px 22px; border-radius: 28px; background: var(--cream);
  border: 1px solid var(--line); position: relative;
}
.menu-card::before {
  content: ""; position: absolute; inset: 10px; border: 1px solid var(--line); border-radius: 20px; pointer-events: none;
}
.menu-group h3 {
  font-size: 1.7rem; font-style: italic; font-weight: 500; color: var(--rose); padding-bottom: 10px; margin-bottom: 8px;
  border-bottom: 1px solid var(--blush-deep);
}
.price-list { list-style: none; margin: 0; padding: 0; }
.price-list li { display: flex; align-items: flex-end; gap: 10px; padding: 12px 0; }
.pl-name { font-weight: 700; font-size: .98rem; line-height: 1.35; }
.pl-name small { display: block; font-weight: 500; font-size: .82rem; color: var(--muted); margin-top: 3px; }
.pl-dots { flex: 1; min-width: 16px; border-bottom: 1.5px dotted #c9b2aa; margin-bottom: 6px; }
.pl-price { font: 700 1.2rem/1.2 var(--serif); color: var(--rose-dark); white-space: nowrap; }
.pricing-cta { text-align: center; margin: 36px 0 0; }
@media (min-width: 900px) {
  .menu-card { grid-template-columns: 1fr 1fr; gap: 48px 64px; padding: 64px 60px; }
  .menu-card::before { inset: 14px; }
}

/* Ưu đãi */
.offer-grid { display: grid; gap: 18px; }
.offer { padding: 30px 26px; border-radius: var(--radius); background: var(--blush); }
.offer p { color: var(--muted); }
.offer-tag {
  display: inline-block; margin-bottom: 14px !important; padding: 5px 12px; border-radius: 999px; background: var(--paper);
  font: 700 .74rem/1.3 var(--sans); letter-spacing: .12em; text-transform: uppercase; color: var(--rose-dark) !important;
}
.offer h3 { font-size: 1.7rem; }
.offer-num-sm { color: var(--rose-dark); white-space: nowrap; }
.offer-feature {
  background: linear-gradient(150deg, var(--rose) 0%, var(--rose-dark) 100%); color: #fff;
  position: relative; overflow: hidden;
}
.offer-feature::after {
  content: ""; position: absolute; right: -60px; top: -60px; width: 200px; height: 200px; border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, .25); box-shadow: 0 0 0 30px rgba(255, 255, 255, .05);
}
.offer-feature h3, .offer-feature p { color: #fff; }
.offer-feature p { opacity: .92; }
.offer-num { display: block; font-size: 4.2rem; line-height: 1; font-weight: 700; }
@media (min-width: 900px) {
  .offer-grid { grid-template-columns: 1.2fr 1fr 1fr; }
  .offer-feature { grid-row: span 1; }
}

/* Vì sao */
.why { background: linear-gradient(180deg, var(--cream), var(--blush) 140%); }
.why-grid { display: grid; gap: 40px; }
.pull { margin: 24px 0 0; padding: 0 0 0 22px; border-left: 2px solid var(--rose); }
.pull p { font: italic 500 1.5rem/1.35 var(--serif); color: var(--ink); }
.pull footer { font-size: .9rem; color: var(--muted); }
.why-list { list-style: none; counter-reset: w; margin: 0; padding: 0; display: grid; gap: 14px; }
.why-list li {
  counter-increment: w; position: relative; padding: 22px 22px 18px 74px; background: var(--paper); border-radius: 18px; border: 1px solid var(--line);
}
.why-list li::before {
  content: counter(w, decimal-leading-zero); position: absolute; left: 22px; top: 20px; font: italic 600 1.7rem/1 var(--serif); color: var(--rose);
}
.why-list h3 { font-size: 1.35rem; margin-bottom: .25em; }
.why-list p { margin: 0; color: var(--muted); font-size: .96rem; }
@media (min-width: 900px) {
  .why-grid { grid-template-columns: .85fr 1.15fr; gap: 72px; align-items: center; }
  .why-list { grid-template-columns: 1fr 1fr; }
}

/* Quy trình */
.step-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 28px; }
.step-list li { position: relative; padding-top: 22px; border-top: 1px solid var(--line); }
.step-n { display: block; font: italic 500 3rem/1 var(--serif); color: var(--blush-deep); margin-bottom: 8px; }
.step-list h3 { font-size: 1.4rem; }
.step-list p { color: var(--muted); font-size: .96rem; margin: 0; }
@media (min-width: 640px) { .step-list { grid-template-columns: 1fr 1fr; } }
@media (min-width: 1040px) { .step-list { grid-template-columns: repeat(4, 1fr); gap: 36px; } }

/* Cảm nhận */
.reviews { background: var(--paper); }
.review-grid { display: grid; gap: 18px; }
.review { margin: 0; padding: 30px 26px; border-radius: var(--radius); background: var(--cream); border: 1px solid var(--line); display: flex; flex-direction: column; }
.stars { color: #a8681f; letter-spacing: .15em; margin-bottom: 12px; }
.review blockquote { margin: 0 0 18px; }
.review blockquote p { font: italic 500 1.3rem/1.45 var(--serif); color: var(--ink); margin: 0; }
.review figcaption { margin-top: auto; font-weight: 700; font-size: .9rem; color: var(--muted); }
@media (min-width: 900px) { .review-grid { grid-template-columns: repeat(3, 1fr); } }

/* Hỏi đáp */
.faq-grid { display: grid; gap: 24px; }
.faq-list { display: grid; gap: 12px; }
.faq details { background: var(--paper); border: 1px solid var(--line); border-radius: 18px; }
.faq summary {
  list-style: none; display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 60px;
  padding: 16px 22px; cursor: pointer; font-weight: 700; font-size: 1.02rem;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+"; flex: none; display: grid; place-items: center; width: 30px; height: 30px; border-radius: 50%;
  background: var(--blush); color: var(--rose-dark); font: 500 1.3rem/1 var(--sans); transition: transform .2s;
}
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { margin: 0; padding: 0 22px 20px; color: var(--muted); }
@media (min-width: 900px) { .faq-grid { grid-template-columns: .8fr 1.2fr; gap: 64px; align-items: start; } }

/* Liên hệ */
.contact { background: var(--blush); }
.contact-grid { display: grid; gap: 24px; }
.contact-card { padding: 34px 24px; background: var(--paper); border-radius: 28px; }
.contact-list { margin: 0 0 26px; display: grid; gap: 16px; }
.contact-list div { display: grid; gap: 2px; padding-bottom: 14px; border-bottom: 1px solid var(--line); }
.contact-list dt { font: 700 .74rem/1.3 var(--sans); letter-spacing: .14em; text-transform: uppercase; color: var(--sage); }
.contact-list dd { margin: 0; font-weight: 600; }
.contact-list a { font: 700 1.4rem var(--serif); text-decoration: none; }
.contact-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.map-art { border-radius: 28px; overflow: hidden; border: 8px solid var(--paper); min-height: 260px; background: #efe3db; }
.map-art svg { width: 100%; height: 100%; object-fit: cover; }
@media (min-width: 900px) {
  .contact-grid { grid-template-columns: 1fr 1fr; align-items: stretch; }
  .contact-card { padding: 48px 44px; }
}

/* Chân trang */
.site-footer { background: var(--ink); color: #e9dcd6; padding: 48px 0 120px; font-size: .92rem; }
.footer-inner p { margin: 0 0 8px; }
.footer-brand { font: 600 1.8rem/1.1 var(--serif); color: #fff; }
.footer-brand span { font: 600 .7rem var(--sans); letter-spacing: .2em; text-transform: uppercase; color: #cdb8b1; margin-left: 8px; }
.footer-note { color: #bfaaa4; font-size: .84rem; }
@media (min-width: 900px) { .site-footer { padding-bottom: 56px; } }

/* Điện thoại nhỏ */
@media (max-width: 420px) {
  .hero-facts { grid-template-columns: 1fr 1fr; }
  .hero-facts li:last-child { grid-column: span 2; }
  .hero-actions .btn { flex: 1 1 100%; }
  .hero-badge { left: 8px; bottom: 16px; padding: 12px 14px; }
  .hero-badge-big { font-size: 1.8rem; }
  .pl-price { font-size: 1.1rem; }
  .contact-actions .btn { flex: 1 1 100%; }
}

/* Ảnh thật trong khung vòm */
.arch .hero-photo { display: block; width: 100%; height: 100%; object-fit: cover; }