:root {
  --ivory: #F7F3EE;
  --surface: #FFFFFF;
  --text: #1A1A1A;
  --text-body: #3A3530;
  --text-secondary: #4A443F;
  --text-muted: #5E5751;
  --text-placeholder: #8C847C;
  --accent: #D6007A;
  --accent-hover: #B80069;
  --accent-active: #9C0059;
  --accent-tint: #FCE8F2;
  --border: #E4DCD2;
  --border-subtle: #EEE7DF;
  --border-input: #CFC6BC;
  --disabled-bg: #E9E3DC;
  --oos-bg: #F4F0EB;
  --error: #B3261E;
  --success: #2E6B4F;
  --serif: 'Playfair Display', Georgia, serif;
  --sans: 'Be Vietnam Pro', system-ui, sans-serif;
  --px: 20px;
  --sec-y: 48px;
  --col-gap: 32px;
  --card-pad: 20px;
}

@media (min-width: 768px) {
  :root { --px: 32px; --sec-y: 88px; --col-gap: 64px; --card-pad: 32px; }
}
@media (min-width: 1200px) {
  :root { --px: 48px; }
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--ivory);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  padding-bottom: 76px;
}
@media (min-width: 768px) { body { padding-bottom: 0; } }

img { display: block; max-width: 100%; height: auto; }
h1, h2, p, figure { margin: 0; }
button, input, textarea { font-family: inherit; }
button { color: inherit; }
a { color: var(--accent); text-underline-offset: 3px; }
a:hover { color: #A8005F; }
[hidden] { display: none !important; }
input::placeholder, textarea::placeholder { color: var(--text-placeholder); }
button:focus-visible, a:focus-visible, input:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--text);
  outline-offset: 2px;
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

.container { max-width: 1200px; margin: 0 auto; padding: var(--sec-y) var(--px); }
.sec-white { background: var(--surface); }
.sec-ivory { background: var(--ivory); }
section[id] { scroll-margin-top: 64px; }
.zoomable { cursor: zoom-in; }
.ph { background: var(--border-subtle); object-fit: cover; width: 100%; }

.h2 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(32px, 3.6vw, 44px);
  line-height: 1.15;
  text-wrap: balance;
}
.h2 em, .display em { color: var(--accent); }
.brandline { display: flex; align-items: center; gap: 14px; font-family: var(--serif); font-size: 18px; }
.brandline::after { content: ''; width: 48px; height: 1px; background: var(--border-input); }
.head-stack { display: flex; flex-direction: column; gap: 12px; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  border: 0; border-radius: 999px; cursor: pointer;
  font: 500 16px var(--sans); text-decoration: none; white-space: nowrap;
}
.btn-primary { height: 52px; padding: 0 28px; background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); color: #fff; }
.btn-primary:active { background: var(--accent-active); transform: translateY(1px); }
.btn-outline { height: 48px; padding: 0 24px; border: 1px solid var(--accent); background: transparent; color: var(--accent); font-size: 15px; }
.btn-outline:hover { background: var(--accent-tint); color: var(--accent); }
.btn-dark-outline { height: 48px; padding: 0 24px; border: 1px solid var(--text); background: #fff; color: var(--text); font-size: 15px; }
.btn-dark-outline:hover { background: var(--ivory); }
.btn[disabled] { cursor: not-allowed; }
.spinner {
  width: 16px; height: 16px; border-radius: 50%;
  border: 2px solid #fff; border-top-color: transparent;
  display: inline-block; animation: ev-spin .8s linear infinite;
}
@keyframes ev-spin { to { transform: rotate(360deg); } }

/* Nav */
.nav {
  position: sticky; top: 0; z-index: 20;
  background: rgba(247, 243, 238, .94);
  -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.nav-inner { max-width: 1200px; margin: 0 auto; padding: 0 var(--px); height: 64px; display: flex; align-items: center; gap: 16px; }
.logo { font-family: var(--serif); font-size: 24px; letter-spacing: -.01em; color: var(--text); text-decoration: none; }
.logo img { height: 28px; width: auto; }
.nav-divider { width: 1px; height: 20px; background: var(--border-input); flex: none; }
.nav-links { display: flex; flex: 1; min-width: 0; }
.nav-links a { font-size: 14px; color: var(--text); text-decoration: none; padding: 12px 6px; white-space: nowrap; }
.nav-links a:hover { color: var(--accent); }
.nav-cta { display: none; height: 44px; padding: 0 22px; font-size: 14px; }
@media (max-width: 399px) { .nav-divider { display: none; } }
@media (min-width: 1024px) { .nav-cta { display: inline-flex; } }

/* 01 Hero */
.hero {
  max-width: 1200px; margin: 0 auto; padding: 28px 20px 48px;
  display: grid; grid-template-columns: minmax(0, 1fr);
  grid-template-areas: "head" "img" "body";
  column-gap: 64px; row-gap: 24px; align-items: center;
}
@media (min-width: 768px) {
  .hero {
    padding: 56px var(--px) 88px;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    grid-template-areas: "head img" "body img";
  }
}
.hero-head { grid-area: head; display: flex; flex-direction: column; gap: 20px; align-self: end; }
.hero-img { grid-area: img; }
.hero-img img { aspect-ratio: 2 / 3; }
.hero-body { grid-area: body; display: flex; flex-direction: column; gap: 24px; align-self: start; }
.eyebrow { font-size: 13px; font-weight: 600; letter-spacing: .16em; text-transform: uppercase; color: var(--text-muted); line-height: 1.4; }
.display {
  font-family: var(--serif); font-weight: 400;
  font-size: clamp(36px, 5.2vw, 64px); line-height: 1.06; letter-spacing: -.015em; text-wrap: balance;
}
.lead { font-size: 18px; line-height: 1.6; color: var(--text-body); max-width: 460px; text-wrap: pretty; }
.price { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; font-size: 28px; font-weight: 500; }
.price s { font-size: 18px; font-weight: 400; color: var(--text-muted); }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px 20px; align-items: center; }
.link-plain { font-size: 15px; color: var(--text); padding: 12px 2px; text-underline-offset: 4px; }
.link-plain:hover { color: var(--accent); }
.hero-strip {
  display: flex; gap: 12px; align-items: center; flex-wrap: wrap;
  padding-top: 20px; border-top: 1px solid var(--border);
  font-size: 14px; color: var(--text-muted);
}
.hero-strip i { font-style: normal; color: var(--border-input); }

/* 02 Chi tiết */
.details { display: flex; flex-direction: column; gap: 40px; }
.details .head-stack { max-width: 560px; }
.details .h2 { line-height: 1.12; }
.sub { font-size: 15px; color: var(--text-muted); }
.detail-rail {
  display: flex; gap: 12px; overflow-x: auto;
  scroll-snap-type: x mandatory; scroll-padding: 0 20px;
  margin: 0 -20px; padding: 0 20px 4px;
  scrollbar-width: none;
}
.detail-rail::-webkit-scrollbar { display: none; }
.detail-card { display: flex; flex-direction: column; gap: 14px; flex: 0 0 82%; scroll-snap-align: start; min-width: 0; }
.detail-card img { aspect-ratio: 4 / 5; }
.detail-num { display: flex; align-items: center; gap: 12px; font-family: var(--serif); font-size: 28px; color: var(--accent); line-height: 1; }
.detail-num::after { content: ''; flex: 1; height: 1px; background: var(--border); }
.detail-card figcaption { display: flex; flex-direction: column; gap: 6px; }
.detail-card figcaption strong { font-family: var(--serif); font-weight: 400; font-size: 22px; line-height: 1.3; }
.detail-card figcaption span { font-size: 16px; line-height: 1.55; color: var(--text-secondary); }
.swipe-hint { display: flex; align-items: center; gap: 10px; margin-top: -20px; font-size: 13px; color: var(--text-muted); }
.swipe-dots { display: flex; gap: 6px; }
.swipe-dots span { width: 18px; height: 2px; background: var(--border-input); }
.swipe-dots span.on { background: var(--text); }
@media (min-width: 768px) {
  .detail-rail { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; overflow: visible; margin: 0; padding: 0; }
  .detail-card { flex: 1 1 auto; }
  .swipe-hint { display: none; }
}

/* 03 Phối đồ */
.outfits { display: flex; flex-direction: column; gap: 40px; align-items: center; }
.outfits .h2 { text-align: center; max-width: 720px; }
.outfit-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr)); gap: 36px; width: 100%; max-width: 960px; }
@media (min-width: 768px) { .outfit-grid { gap: 24px; } }
.outfit-card { display: flex; flex-direction: column; gap: 14px; align-items: center; }
.outfit-card img { aspect-ratio: 2 / 3; }
.outfit-card figcaption { display: flex; flex-direction: column; gap: 4px; align-items: center; text-align: center; }
.outfit-card figcaption strong { font-family: var(--serif); font-weight: 400; font-size: 22px; }
.outfit-card figcaption i { width: 32px; height: 1px; background: var(--accent); }
.outfit-card figcaption span { font-size: 15px; color: var(--text-muted); margin-top: 6px; }
.outfits-foot { display: flex; flex-direction: column; gap: 8px; align-items: center; font-size: 15px; color: var(--text-secondary); }
.outfits-foot a { font-weight: 500; padding: 10px 4px; }

/* 04 Bảng màu */
.colors { display: flex; flex-direction: column; gap: 36px; align-items: center; }
.colors-head { display: flex; flex-direction: column; gap: 10px; align-items: center; text-align: center; }
.colors-head span { color: var(--text-muted); }
.color-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; width: 100%; }
@media (min-width: 768px) { .color-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
@media (min-width: 1024px) { .color-grid { grid-template-columns: repeat(5, minmax(0, 1fr)); } }
.color-card {
  position: relative; display: flex; flex-direction: column; padding: 0; overflow: hidden;
  background: #fff; border: 1px solid var(--border); border-radius: 8px;
  cursor: pointer; text-align: left;
}
.color-card img { aspect-ratio: 1 / 1; }
.color-card[aria-checked="true"] { border: 2px solid var(--accent); }
.color-card .name { display: flex; align-items: center; gap: 8px; padding: 12px; font-size: 15px; min-height: 48px; }
.dot { width: 16px; height: 16px; border-radius: 50%; border: 1px solid rgba(0, 0, 0, .15); flex: none; }
.color-card .check {
  position: absolute; top: 8px; right: 8px; width: 26px; height: 26px; border-radius: 50%;
  background: var(--accent); color: #fff; font-size: 14px;
  display: none; align-items: center; justify-content: center;
}
.color-card[aria-checked="true"] .check { display: flex; }
.colors-foot { display: flex; flex-direction: column; gap: 10px; align-items: center; font-size: 14px; color: var(--text-muted); }

/* Two-column sections (05, 07, 08) */
.split { display: grid; gap: var(--col-gap); }
.split-380 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 380px), 1fr)); }
.split-420 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 420px), 1fr)); }

/* 05 Chọn size */
.size { align-items: center; }
.size > img { aspect-ratio: 2 / 3; max-height: 760px; }
.size-col { display: flex; flex-direction: column; gap: 28px; }
.card { background: #fff; border: 1px solid var(--border); border-radius: 12px; padding: var(--card-pad); display: flex; flex-direction: column; gap: 20px; }
.chart-fallback { background: var(--ivory); border-radius: 8px; padding: 16px; font-size: 15px; line-height: 1.55; color: var(--text-body); }
.chart { display: flex; flex-direction: column; gap: 10px; }
.chart-head { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; align-items: baseline; }
.chart-head strong { font-weight: 600; }
.chart-head span { font-size: 13px; color: var(--text-muted); }
.chart-scroll { overflow-x: auto; border: 1px solid var(--border); border-radius: 8px; }
.chart table { width: 100%; border-collapse: collapse; font-size: 14px; }
.chart th, .chart td { text-align: left; padding: 10px 6px; }
.chart td { white-space: nowrap; }
.chart th { vertical-align: bottom; line-height: 1.3; }
.chart th:first-child, .chart td:first-child { padding-left: 12px; }
.chart thead tr { background: var(--ivory); }
.chart th { font-weight: 500; }
.chart th:first-child, .chart td:first-child { font-weight: 600; }
.chart tbody tr { border-top: 1px solid var(--border-subtle); }
.consult { display: flex; flex-direction: column; gap: 16px; }
.consult > strong { font-weight: 600; }
.chips { display: flex; gap: 10px; flex-wrap: wrap; }
.chip { height: 44px; padding: 0 20px; border-radius: 999px; border: 1px solid var(--border-input); background: #fff; font: 500 14px var(--sans); cursor: pointer; }
.chip[aria-pressed="true"] { border-color: var(--text); background: var(--text); color: #fff; }
.measure-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; }
.mini-field { display: flex; flex-direction: column; gap: 6px; font-size: 13px; font-weight: 500; }
.consult .btn { width: 100%; }
.caption { font-size: 13px; color: var(--text-muted); line-height: 1.5; }
.consult-done { display: flex; flex-direction: column; gap: 10px; background: #F4FAF6; border: 1px solid #CFE3D7; border-radius: 8px; padding: 18px; }
.consult-done strong { font-family: var(--serif); font-weight: 400; font-size: 20px; }
.consult-done span { font-size: 15px; line-height: 1.55; color: var(--text-body); }
.consult-done a { font-size: 15px; font-weight: 500; padding: 6px 0; }

/* Inputs */
.input {
  width: 100%; min-width: 0; height: 48px;
  border: 1px solid var(--border-input); border-radius: 6px;
  padding: 0 14px; background: #fff; color: var(--text);
  font: 16px var(--sans); outline: none;
}
textarea.input { height: auto; padding: 12px 14px; resize: vertical; }
.input:focus { border-color: var(--text); box-shadow: 0 0 0 3px rgba(214, 0, 122, .18); outline: none; }
.input.is-error { border: 1.5px solid var(--error); background: #FFF8F7; }
.err { font-size: 14px; color: var(--error); font-weight: 400; }
.err-icon { display: flex; gap: 8px; align-items: center; }
.err-icon::before {
  content: '!'; width: 18px; height: 18px; border-radius: 50%; flex: none;
  background: var(--error); color: #fff; font-size: 12px;
  display: flex; align-items: center; justify-content: center;
}

/* 06 Đánh giá */
.reviews { display: flex; flex-direction: column; gap: 32px; align-items: center; }
.review-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr)); gap: 16px; width: 100%; }
.review-card { border: 1px solid var(--border); border-radius: 8px; padding: 20px; display: flex; flex-direction: column; gap: 12px; }
.review-card img { aspect-ratio: 4 / 3; border-radius: 4px; }
.review-card blockquote { margin: 0; font-size: 15px; line-height: 1.55; color: var(--text-body); }
.review-card cite { font-style: normal; font-size: 13px; color: var(--text-muted); }

/* 07 FAQ */
.faq { align-items: start; }
.faq-left, .faq-right { display: flex; flex-direction: column; gap: 28px; }
.faq-title { font-family: var(--serif); font-weight: 400; font-size: clamp(36px, 4.4vw, 56px); line-height: 1.05; }
.faq-title span { color: var(--accent); }
.faq-left img { aspect-ratio: 1 / 1; }
.faq-list { border-top: 1px solid var(--border); }
.faq-item { border-bottom: 1px solid var(--border); }
.faq-q {
  width: 100%; min-height: 60px; display: flex; justify-content: space-between; align-items: center; gap: 16px;
  padding: 14px 4px; background: transparent; border: 0; cursor: pointer;
  font: 500 16px var(--sans); color: var(--text); text-align: left;
}
.faq-q:hover { color: var(--accent); }
.faq-q i { font-style: normal; font-size: 24px; font-weight: 300; color: var(--accent); flex: none; width: 24px; text-align: center; }
.faq-a { padding: 0 4px 20px; font-size: 15px; line-height: 1.6; color: var(--text-body); }
.faq-help { display: flex; flex-direction: column; gap: 12px; align-items: flex-start; font-size: 15px; color: var(--text-secondary); }

/* 08 Đặt hàng */
.order { align-items: start; }
.gallery { display: flex; flex-direction: column; gap: 14px; }
@media (min-width: 768px) { .gallery { position: sticky; top: 88px; } }
.gallery > img { aspect-ratio: 1 / 1; }
.gallery-name { font-family: var(--serif); font-size: 22px; }
.thumbs { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 8px; }
.thumb { padding: 0; border: 1px solid var(--border); border-radius: 6px; overflow: hidden; cursor: pointer; background: #fff; }
.thumb img { aspect-ratio: 1 / 1; object-fit: cover; width: 100%; }
.thumb.on { border: 2px solid var(--accent); }
.order-col { display: flex; flex-direction: column; gap: 24px; }
.order-col .h2 { line-height: 1.12; }
.form-card {
  background: #fff; border-radius: 12px; box-shadow: 0 12px 40px rgba(60, 40, 20, .08);
  padding: var(--card-pad); display: flex; flex-direction: column; gap: 22px;
  scroll-margin-top: 80px;
}
.card-title { font-family: var(--serif); font-size: 24px; }
.group { display: flex; flex-direction: column; gap: 10px; }
.label { font-size: 14px; font-weight: 500; line-height: 1.4; }
.label small { font-size: inherit; font-weight: 400; color: var(--text-muted); }
.label-row { display: flex; justify-content: space-between; gap: 12px; align-items: baseline; }
.label-row a { font-size: 13px; padding: 6px 0; }
.swatches, .size-chips { display: flex; gap: 10px; flex-wrap: wrap; }
.swatch {
  width: 44px; height: 44px; border-radius: 50%; padding: 0;
  border: 2px solid transparent; background: #fff; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
}
.swatch span { width: 32px; height: 32px; border-radius: 50%; border: 1px solid rgba(0, 0, 0, .12); }
.swatch[aria-checked="true"] { border-color: var(--accent); }
.size-chip {
  min-width: 64px; height: 48px; border-radius: 6px;
  border: 1px solid var(--border-input); background: #fff;
  font: 500 15px var(--sans); cursor: pointer;
}
.size-chip[aria-pressed="true"] { border-color: var(--text); background: var(--text); color: #fff; }
.size-chip[disabled] { border-style: dashed; background: var(--oos-bg); color: var(--text-placeholder); text-decoration: line-through; cursor: not-allowed; }
.stepper { display: flex; align-items: center; width: max-content; border: 1px solid var(--border-input); border-radius: 6px; overflow: hidden; background: #fff; }
.stepper button { width: 48px; height: 48px; border: 0; background: #fff; font-size: 20px; cursor: pointer; }
.stepper button[disabled] { color: #C9BFB4; cursor: default; }
.stepper output { width: 56px; text-align: center; font-weight: 500; line-height: 48px; border-left: 1px solid var(--border); border-right: 1px solid var(--border); }
.link-btn { align-self: flex-start; min-height: 44px; padding: 0; border: 0; background: none; color: var(--accent); font: 500 15px var(--sans); text-decoration: underline; text-underline-offset: 3px; cursor: pointer; }
.link-btn:hover { color: var(--accent-hover); }
.cart-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; border: 1px solid var(--border); border-radius: 8px; font-size: 15px; }
.cart-list li { display: flex; align-items: center; gap: 10px; padding: 4px 4px 4px 12px; }
.cart-list li + li { border-top: 1px solid var(--border-subtle); }
.cart-list li span:nth-child(2) { flex: 1; }
.cart-list button { min-width: 48px; height: 44px; border: 0; background: none; color: var(--text-muted); font: 14px var(--sans); text-decoration: underline; cursor: pointer; }
.cart-list button:hover { color: var(--error); }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; }
.summary .v.strong { white-space: pre-line; }
.rule { height: 1px; background: var(--border-subtle); }
.field-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 220px), 1fr)); gap: 16px; }
.field { display: flex; flex-direction: column; gap: 8px; }
.pay { display: flex; flex-direction: column; gap: 10px; }
.pay-list { display: flex; flex-wrap: wrap; gap: 8px; margin: 0; padding: 0; list-style: none; font-size: 15px; }
.pay-list li { border: 1px solid var(--border-input); border-radius: 6px; padding: 10px 14px; }
.summary { display: flex; flex-direction: column; gap: 10px; padding-top: 16px; border-top: 1px solid var(--border-subtle); font-size: 15px; }
.summary > div { display: flex; justify-content: space-between; gap: 12px; }
.summary dt, .summary .k { color: var(--text-secondary); }
.summary .v { color: var(--text-muted); text-align: right; }
.summary .v.strong { color: var(--text); }
.summary .total { font-size: 18px; font-weight: 600; padding-top: 8px; }
.summary .total span { color: var(--text); }
.summary .note { font-size: 13px; color: var(--text-muted); font-style: italic; }
.send-fail { background: #FFF8F7; border: 1px solid #F0C9C5; border-radius: 8px; padding: 14px 16px; font-size: 15px; line-height: 1.5; color: var(--text-body); }
.send-fail strong { color: var(--error); font-weight: 600; }
.btn-submit { width: 100%; height: 56px; border-radius: 6px; font-size: 17px; background: var(--accent); color: #fff; }
.btn-submit:hover { background: var(--accent-hover); }
.btn-submit:active { background: var(--accent-active); }
.btn-submit[aria-busy="true"] { background: var(--accent-hover); }

.success-icon { width: 48px; height: 48px; border-radius: 50%; background: var(--success); color: #fff; display: flex; align-items: center; justify-content: center; font-size: 22px; }
.success-title { font-family: var(--serif); font-size: 28px; line-height: 1.2; }
.success-item { display: flex; gap: 14px; align-items: center; padding: 14px 0; border-top: 1px solid var(--border-subtle); border-bottom: 1px solid var(--border-subtle); }
.success-item img { width: 72px; height: 72px; object-fit: cover; border-radius: 6px; flex: none; }
.success-item div { display: flex; flex-direction: column; gap: 4px; font-size: 15px; min-width: 0; color: var(--text-secondary); overflow-wrap: anywhere; }
#success-variant { white-space: pre-line; }
.success-item strong { font-weight: 500; color: var(--text); }
.success-next { font-size: 15px; line-height: 1.6; color: var(--text-body); }
.form-card .btn-dark-outline { align-self: flex-start; }

/* Thông tin sản phẩm */
.info-sec { border-top: 1px solid var(--border); }
.info { max-width: 880px; display: flex; flex-direction: column; gap: 28px; }
.info .h2 { text-align: center; }
.spec { margin: 0; border: 1px solid var(--border); border-radius: 12px; overflow: hidden; background: var(--ivory); font-size: 15px; line-height: 1.55; }
.spec > div { display: grid; grid-template-columns: minmax(110px, 180px) 1fr; gap: 4px 16px; padding: 14px 20px; }
.spec > div + div { border-top: 1px solid var(--border); }
.spec dt { font-weight: 600; }
.spec dd { margin: 0; color: var(--text-body); }
@media (max-width: 479px) { .spec > div { grid-template-columns: 1fr; padding: 12px 16px; } }

/* Footer */
.footer { background: #fff; border-top: 1px solid var(--border); }
.footer-inner { max-width: 1200px; margin: 0 auto; padding: 40px var(--px); display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; align-items: center; }
.footer-brand { font-family: var(--serif); font-size: 22px; }
.footer-links { display: flex; gap: 20px; flex-wrap: wrap; font-size: 14px; }
.footer-links a { color: var(--text-secondary); padding: 8px 0; }
.footer-info { flex-basis: 100%; font-size: 14px; color: var(--text-muted); line-height: 1.6; }

/* Sticky CTA (mobile) */
.sticky {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 30;
  background: #fff; border-top: 1px solid var(--border);
  padding: 10px 16px calc(10px + env(safe-area-inset-bottom));
  display: flex; gap: 12px; align-items: center;
  box-shadow: 0 -6px 24px rgba(60, 40, 20, .06);
}
.sticky .btn { flex: 1; height: 48px; padding: 0 16px; font-size: 15px; }
.sticky-price { font-size: 16px; font-weight: 500; flex: none; }
@media (min-width: 768px) { .sticky { display: none; } }

/* Nút chat nổi: Messenger, Zalo */
.chat-fabs { position: fixed; right: 16px; bottom: 20px; z-index: 31; display: flex; flex-direction: column; gap: 12px; }
.chat-fabs.raised { bottom: calc(84px + env(safe-area-inset-bottom)); }
.chat-fab {
  width: 52px; height: 52px; border-radius: 50%; background: #fff;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 6px 20px rgba(60, 40, 20, .18); text-decoration: none;
  transition: transform .15s;
}
.chat-fab:hover { transform: scale(1.06); }
.chat-zalo { background: #0068FF; color: #fff; font: 700 14px var(--sans); letter-spacing: -.01em; }
.chat-zalo:hover { color: #fff; }

/* Lightbox */
.lightbox {
  position: fixed; inset: 0; z-index: 50; background: rgba(26, 26, 26, .94);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 16px; padding: 56px 12px 24px;
}
.lightbox > img { max-width: 100%; max-height: calc(100vh - 160px); object-fit: contain; }
.lb-close { position: absolute; top: 12px; right: 12px; width: 44px; height: 44px; border: 0; border-radius: 50%; background: rgba(255, 255, 255, .12); color: #fff; font-size: 24px; cursor: pointer; }
.lb-nav { display: flex; align-items: center; gap: 16px; color: #fff; font-size: 14px; }
.lb-nav button { width: 44px; height: 44px; border-radius: 50%; border: 1px solid rgba(255, 255, 255, .4); background: transparent; color: #fff; font-size: 18px; cursor: pointer; }
.lb-nav button[disabled] { opacity: .3; cursor: default; }
.lb-nav span { min-width: 120px; text-align: center; }
.lightbox button:focus-visible { outline-color: #fff; }