/* Máy Tính Kim Ngân — trang giới thiệu.
   Màu: Đêm (nền), Kim (vàng = hành động), Ngân (bạc = chữ), bộ ba cực quang Tím/Hồng/Ngọc chỉ nằm ở nền và logo. */

:root {
  --dem: #0A0620;
  --dem-2: #140C36;
  --dem-3: #1D1448;
  --ngan: #EEF2F8;
  --ngan-2: #C2C0DD;
  --ngan-3: #9A97BE;
  --kim: #FFC53D;
  --kim-sang: #FFDD7A;
  --kim-dam: #E89A14;
  --tim: #7A4DFF;
  --hong: #FF3EA5;
  --ngoc: #2EE6D6;
  --vien: rgba(255, 255, 255, .14);
  --vien-sang: rgba(255, 255, 255, .26);
  --font-display: 'Unbounded', 'Be Vietnam Pro', system-ui, sans-serif;
  --font-body: 'Be Vietnam Pro', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --r-lg: 30px;
  --r-md: 22px;
  --r-sm: 14px;
  --gutter: clamp(16px, 4vw, 40px);
  --max: 1240px;
  --header-h: 76px;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 24px); }
body {
  margin: 0;
  min-height: 100vh;
  background: var(--dem);
  color: var(--ngan-2);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.65;
  overflow-x: hidden;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; }
h1, h2, h3 { margin: 0; color: var(--ngan); font-family: var(--font-display); font-weight: 600; text-wrap: balance; }
p { margin: 0; text-wrap: pretty; }
ul { margin: 0; padding: 0; list-style: none; }
:focus-visible { outline: 2px solid var(--kim); outline-offset: 3px; border-radius: 6px; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.skip { position: absolute; left: 16px; top: -60px; z-index: 100; padding: 10px 16px; border-radius: 999px; background: var(--kim); color: var(--dem); font-weight: 600; text-decoration: none; }
.skip:focus { top: 12px; }

/* ---------- Nền cực quang ---------- */
.aurora {
  position: fixed;
  inset: 0;
  z-index: -2;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 1.6s ease;
}
.aurora-on .aurora { opacity: 1; }
.aurora-fallback {
  position: fixed;
  inset: 0;
  z-index: -3;
  background:
    radial-gradient(60% 50% at 85% 10%, rgba(122, 77, 255, .55), transparent 70%),
    radial-gradient(45% 40% at 70% 35%, rgba(255, 62, 165, .35), transparent 70%),
    radial-gradient(40% 35% at 95% 55%, rgba(46, 230, 214, .25), transparent 70%),
    radial-gradient(35% 30% at 55% 15%, rgba(255, 197, 61, .22), transparent 70%),
    var(--dem);
}
/* Hạt mịn phủ trên nền để dải màu không bị sọc. */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: .07;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.wrap { width: 100%; max-width: var(--max); margin-inline: auto; padding-inline: var(--gutter); }
/* Quầng sáng trang trí tràn ngang thì cắt ở mép, để điện thoại không bị nới khung nhìn. */
main, .chan { overflow-x: clip; }

/* ---------- Kính ---------- */
.kinh {
  background: linear-gradient(180deg, rgba(255, 255, 255, .095), rgba(255, 255, 255, .035));
  border: 1px solid var(--vien);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
  backdrop-filter: blur(18px) saturate(150%);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .12), 0 30px 60px -32px rgba(4, 2, 18, .85);
}

/* ---------- Nút ---------- */
.btn {
  --h: 54px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: var(--h);
  padding: 0 24px;
  border-radius: 999px;
  border: 1px solid transparent;
  font: 600 1rem/1 var(--font-body);
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  transition: transform .2s ease, box-shadow .2s ease, background-color .2s ease, border-color .2s ease;
}
.btn svg { width: 20px; height: 20px; flex: none; }
.btn-kim {
  color: #1B0F33;
  background: linear-gradient(180deg, var(--kim-sang), var(--kim) 55%, #F5AE1F);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .65), 0 12px 32px -12px rgba(255, 197, 61, .75);
}
.btn-kim:hover { transform: translateY(-1px); box-shadow: inset 0 1px 0 rgba(255, 255, 255, .7), 0 16px 40px -12px rgba(255, 197, 61, .95); }
.btn-kinh {
  color: var(--ngan);
  background: rgba(255, 255, 255, .07);
  border-color: var(--vien-sang);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
}
.btn-kinh:hover { background: rgba(255, 255, 255, .13); border-color: rgba(255, 255, 255, .4); }
.btn-nho { --h: 44px; padding: 0 18px; font-size: .9375rem; }

/* ---------- Đầu trang ---------- */
.dau {
  position: fixed;
  top: 12px;
  left: 0;
  right: 0;
  z-index: 50;
  pointer-events: none;
}
.dau .wrap { pointer-events: auto; }
.thanh {
  display: flex;
  align-items: center;
  gap: 16px;
  height: 64px;
  padding: 0 10px 0 12px;
  border-radius: 999px;
  transition: background-color .3s ease, box-shadow .3s ease;
}
.logo { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; flex: none; }
.logo img { width: 42px; height: 42px; filter: drop-shadow(0 6px 14px rgba(122, 77, 255, .45)); }
.logo-chu { display: grid; line-height: 1.1; }
.logo-ten {
  font: 600 1.125rem/1.15 var(--font-display);
  letter-spacing: -.01em;
  background: linear-gradient(100deg, #FFFFFF 0%, #DDE4EF 40%, var(--kim-sang) 75%, var(--kim) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.logo-phu { font-size: .75rem; color: var(--ngan-3); letter-spacing: .01em; }
.menu { display: flex; gap: 4px; margin-inline: auto; }
.menu a {
  padding: 10px 14px;
  border-radius: 999px;
  color: var(--ngan-2);
  font-size: .9375rem;
  font-weight: 500;
  text-decoration: none;
  transition: color .2s ease, background-color .2s ease;
}
.menu a:hover { color: var(--ngan); background: rgba(255, 255, 255, .08); }
.thanh .btn { flex: none; }
.nut-menu { display: none; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding: calc(var(--header-h) + 48px) 0 72px;
}
.hero-luoi {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  gap: clamp(32px, 5vw, 72px);
  align-items: center;
}
.trang-thai {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 28px;
  padding: 8px 16px 8px 12px;
  border-radius: 999px;
  font-size: .9375rem;
  color: var(--ngan);
}
.trang-thai .cham { width: 10px; height: 10px; border-radius: 50%; background: var(--ngan-3); flex: none; }
.trang-thai[data-mo="1"] .cham { background: #3BE08F; box-shadow: 0 0 0 4px rgba(59, 224, 143, .18), 0 0 14px rgba(59, 224, 143, .8); }
.trang-thai[data-mo="0"] .cham { background: var(--kim); box-shadow: 0 0 0 4px rgba(255, 197, 61, .16); }
.hero-chu { position: relative; container-type: inline-size; }
/* Màn tối mờ sau cột chữ: nền cực quang rực mà chữ vẫn đủ tương phản. */
.hero-chu::before {
  content: '';
  position: absolute;
  inset: -18% -12% -14% -22%;
  z-index: -1;
  background: radial-gradient(60% 55% at 40% 50%, rgba(10, 6, 32, .72), rgba(10, 6, 32, .35) 60%, transparent 80%);
  pointer-events: none;
}
.hero h1 {
  /* Unbounded rất rộng: dòng dài nhất ("Máy tính, máy in,") ≈ 10 lần cỡ chữ, nên cỡ chữ bám theo bề rộng cột. */
  font-size: clamp(2rem, 9.4cqi, 4.4rem);
  line-height: 1.12;
  letter-spacing: -.025em;
  font-weight: 600;
  background: linear-gradient(180deg, #FFFFFF 10%, #E4E9F3 55%, #AEB9CE 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  padding-bottom: .06em;
}
.hero h1 .dong { display: block; }
.hero-mo {
  max-width: 34em;
  margin-top: 26px;
  font-size: clamp(1.0625rem, 1rem + .3vw, 1.25rem);
  color: var(--ngan-2);
}
.hero-nut { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 36px; }
.hero-ghi { margin-top: 22px; font-size: .9375rem; color: var(--ngan-3); max-width: 34em; }

.hero-anh { position: relative; }
.hero-anh::before {
  content: '';
  position: absolute;
  inset: -12% -16% -8% -10%;
  z-index: -1;
  background:
    radial-gradient(50% 45% at 70% 25%, rgba(122, 77, 255, .75), transparent 70%),
    radial-gradient(45% 40% at 30% 80%, rgba(255, 62, 165, .55), transparent 70%),
    radial-gradient(40% 35% at 85% 85%, rgba(255, 197, 61, .45), transparent 70%);
  filter: blur(30px);
}
.khung-anh {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4 / 5;
  border-radius: 36px;
  border: 1px solid var(--vien-sang);
  box-shadow: 0 40px 80px -40px rgba(0, 0, 0, .9), inset 0 1px 0 rgba(255, 255, 255, .2);
  background: var(--dem-2);
}
.khung-anh img { width: 100%; height: 100%; object-fit: cover; object-position: 50% 22%; }
.khung-anh::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(10, 6, 32, .55));
  pointer-events: none;
}
.the-gio {
  position: absolute;
  left: -28px;
  bottom: 28px;
  padding: 16px 20px;
  border-radius: var(--r-md);
  min-width: 240px;
}
.the-gio h2 { font: 600 .9375rem/1.3 var(--font-body); color: var(--ngan); margin-bottom: 6px; }
.the-gio dl { display: grid; grid-template-columns: auto 1fr; gap: 2px 14px; margin: 0; font-size: .875rem; }
.the-gio dt { color: var(--ngan-3); }
.the-gio dd { margin: 0; color: var(--ngan); font-variant-numeric: tabular-nums; }

/* Một màn chào duy nhất: chữ hero lên theo nhịp, khung ảnh mở ra. */
.vao .hien { opacity: 0; transform: translateY(18px); }
.vao .khung-anh { clip-path: inset(12% 12% 12% 12% round 36px); opacity: 0; }
.vao .the-gio { opacity: 0; transform: translateY(14px); }
.da-vao .hien, .da-vao .khung-anh, .da-vao .the-gio {
  opacity: 1;
  transform: none;
  transition: opacity .9s cubic-bezier(.2, .7, .2, 1), transform .9s cubic-bezier(.2, .7, .2, 1), clip-path 1.2s cubic-bezier(.2, .7, .2, 1);
  transition-delay: var(--tre, 0s);
}
.da-vao .khung-anh { clip-path: inset(0 0 0 0 round 36px); }

/* ---------- Khối chung ---------- */
.khoi { position: relative; padding: clamp(64px, 8vw, 112px) 0; }
.khoi-dau { max-width: 46rem; margin-bottom: clamp(36px, 5vw, 56px); }
.khoi-dau h2 { font-size: clamp(1.9rem, 1.25rem + 2.5vw, 3.2rem); line-height: 1.14; letter-spacing: -.02em; }
.khoi-dau p { margin-top: 16px; font-size: 1.125rem; }

/* ---------- Dịch vụ (bento) ---------- */
.bento {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  grid-auto-rows: minmax(200px, auto);
  gap: 16px;
}
.o {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  min-height: 300px;
  overflow: hidden;
  border-radius: var(--r-md);
  border: 1px solid var(--vien);
  background: var(--dem-2);
  isolation: isolate;
}
.o > img {
  position: absolute;
  inset: 0;
  z-index: -2;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.o::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(180deg, rgba(10, 6, 32, 0) 30%, rgba(10, 6, 32, .55) 60%, rgba(10, 6, 32, .92));
}
.o-chu { padding: clamp(20px, 2.4vw, 30px); }
.o h3 { font-size: clamp(1.2rem, 1rem + .6vw, 1.5rem); line-height: 1.25; letter-spacing: -.01em; }
.o p { margin-top: 10px; color: var(--ngan-2); font-size: 1rem; max-width: 36em; }
.o ul { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.o li {
  padding: 5px 12px;
  border-radius: 999px;
  font-size: .875rem;
  color: var(--ngan);
  background: rgba(255, 255, 255, .08);
  border: 1px solid rgba(255, 255, 255, .12);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}
.o-lon { grid-column: span 4; grid-row: span 2; border-radius: var(--r-lg); min-height: 520px; }
.o-lon h3 { font-size: clamp(1.5rem, 1.1rem + 1.4vw, 2.25rem); }
.o-cao { grid-column: span 2; grid-row: span 2; }
.o-vua { grid-column: span 2; }
.o-rong { grid-column: span 3; }

/* ---------- Về Kim Ngân ---------- */
.ve-luoi { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: clamp(32px, 5vw, 80px); align-items: center; }
.ve-logo { position: relative; margin: 0; }
.ve-logo::before {
  content: '';
  position: absolute;
  inset: 8%;
  z-index: -1;
  border-radius: 50%;
  background: radial-gradient(closest-side, rgba(122, 77, 255, .7), rgba(255, 62, 165, .35) 55%, transparent);
  filter: blur(40px);
}
/* Ảnh 3D có nền tím đậm: làm mờ bốn mép để khối kính như lơ lửng giữa nền cực quang. */
.ve-logo img {
  width: 100%;
  height: auto;
  -webkit-mask-image: linear-gradient(to right, transparent, #000 11%, #000 89%, transparent), linear-gradient(to bottom, transparent, #000 10%, #000 84%, transparent);
  -webkit-mask-composite: source-in;
  mask-image: linear-gradient(to right, transparent, #000 11%, #000 89%, transparent), linear-gradient(to bottom, transparent, #000 10%, #000 84%, transparent);
  mask-composite: intersect;
}
.ve-chu h2 { font-size: clamp(1.9rem, 1.25rem + 2.5vw, 3.2rem); line-height: 1.14; letter-spacing: -.02em; }
.ve-chu > p { margin-top: 18px; font-size: 1.125rem; max-width: 36em; }
.ve-chu > p + p { margin-top: 12px; }
.ve-chu .so-lieu { margin-top: 32px; grid-template-columns: repeat(2, minmax(0, 1fr)); }
.ve-chu .so-lieu > div:nth-child(3) { border-left: 0; }
.ve-chu .so-lieu > div:nth-child(n+3) { border-top: 1px solid var(--vien); }
.ve-chu h3 { margin-top: 32px; font: 600 1rem/1.4 var(--font-body); color: var(--ngan); }
.ve-chu > .ve-ghi { margin-top: 6px; font-size: 1rem; color: var(--ngan-2); }
.ve-chu > .hang { margin-top: 10px; }

/* ---------- Số liệu ---------- */
.so-lieu {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  border-radius: var(--r-lg);
  overflow: hidden;
}
.so-lieu > div { padding: clamp(22px, 3vw, 36px); border-left: 1px solid var(--vien); }
.so-lieu > div:first-child { border-left: 0; }
.so-lieu b {
  display: block;
  font: 600 clamp(1.9rem, 1.3rem + 2vw, 2.9rem)/1.05 var(--font-display);
  letter-spacing: -.02em;
  color: var(--ngan);
  font-variant-numeric: tabular-nums;
}
.so-lieu span { display: block; margin-top: 10px; font-size: .9375rem; color: var(--ngan-3); }
.so-lieu-ghi { margin-top: 14px; font-size: .8125rem; color: var(--ngan-3); }

/* ---------- Quy trình ---------- */
.buoc { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; counter-reset: buoc; position: relative; margin: 0; padding: 0; list-style: none; }
.buoc li { position: relative; padding: 28px 24px 26px; border-radius: var(--r-md); }
.buoc li::before {
  counter-increment: buoc;
  content: counter(buoc);
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  margin-bottom: 22px;
  border-radius: 50%;
  font: 600 1.125rem/1 var(--font-display);
  color: #1B0F33;
  background: linear-gradient(180deg, var(--kim-sang), var(--kim));
  box-shadow: 0 0 0 6px rgba(255, 197, 61, .12), 0 10px 26px -8px rgba(255, 197, 61, .8);
}
.buoc h3 { font-size: 1.125rem; line-height: 1.3; }
.buoc p { margin-top: 10px; font-size: .9875rem; }

/* ---------- Bảng giá ---------- */
.gia { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.gia li { padding: 28px 26px; border-radius: var(--r-md); display: flex; flex-direction: column; gap: 6px; }
.gia h3 { font: 500 1.0625rem/1.4 var(--font-body); color: var(--ngan-2); }
.gia b {
  font: 600 clamp(2rem, 1.5rem + 1.8vw, 2.75rem)/1.1 var(--font-display);
  letter-spacing: -.02em;
  background: linear-gradient(180deg, var(--kim-sang), var(--kim) 60%, var(--kim-dam));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.gia small { font-size: .875rem; color: var(--ngan-3); }
.gia-ghi { margin-top: 22px; color: var(--ngan-3); font-size: .9375rem; max-width: 50em; }

/* ---------- Hãng ---------- */
.hang { display: flex; flex-wrap: wrap; gap: 10px 28px; margin-top: 18px; }
.hang span { font: 500 1.125rem/1.4 var(--font-display); color: var(--ngan-3); letter-spacing: -.01em; }

/* ---------- Liên hệ ---------- */
.lien-he {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  gap: clamp(28px, 4vw, 56px);
  padding: clamp(28px, 5vw, 64px);
  border-radius: 40px;
  position: relative;
  overflow: hidden;
}
.lien-he::before {
  content: '';
  position: absolute;
  inset: auto -10% -60% 30%;
  height: 120%;
  z-index: -1;
  background: radial-gradient(50% 50% at 50% 50%, rgba(255, 62, 165, .35), transparent 70%), radial-gradient(40% 40% at 80% 30%, rgba(255, 197, 61, .3), transparent 70%);
  filter: blur(40px);
}
.lien-he h2 { font-size: clamp(1.9rem, 1.25rem + 2.4vw, 3.1rem); line-height: 1.14; letter-spacing: -.02em; }
.lien-he .hero-nut { margin-top: 28px; }
.lh-ds { display: grid; gap: 18px; align-content: start; }
.lh-ds div { padding-bottom: 18px; border-bottom: 1px solid var(--vien); }
.lh-ds div:last-child { border-bottom: 0; padding-bottom: 0; }
.lh-ds dt { font-size: .875rem; color: var(--ngan-3); }
.lh-ds dd { margin: 4px 0 0; color: var(--ngan); font-size: 1.0625rem; }
.lh-ds dd a { text-decoration-color: rgba(255, 197, 61, .5); text-underline-offset: 4px; }
.lh-ds dd a:hover { color: var(--kim-sang); }
.lh-ds { margin: 0; }

/* ---------- Chân trang ---------- */
.chan { padding: 40px 0 calc(40px + env(safe-area-inset-bottom)); border-top: 1px solid var(--vien); }
.chan-luoi { display: flex; flex-wrap: wrap; align-items: flex-start; justify-content: space-between; gap: 24px; }
.chan p { font-size: .875rem; color: var(--ngan-3); }
.chan .logo img { width: 36px; height: 36px; }

/* Thanh gọi nhanh trên điện thoại. */
.goi-nhanh { display: none; }

/* ---------- Màn hình vừa ---------- */
@media (max-width: 1080px) {
  .menu a { padding: 10px 10px; }
  .bento { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .o-lon { grid-column: span 2; grid-row: auto; min-height: 460px; }
  .o-cao, .o-vua, .o-rong { grid-column: span 1; grid-row: auto; min-height: 340px; }
  .buoc { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .so-lieu { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .so-lieu > div:nth-child(3) { border-left: 0; }
  .so-lieu > div:nth-child(n+3) { border-top: 1px solid var(--vien); }
}

@media (max-width: 900px) {
  :root { --header-h: 68px; }
  .menu {
    position: fixed;
    top: 84px;
    left: var(--gutter);
    right: var(--gutter);
    display: grid;
    gap: 2px;
    padding: 10px;
    border-radius: var(--r-md);
    background: rgba(20, 12, 54, .92);
    border: 1px solid var(--vien);
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity .2s ease, transform .2s ease, visibility 0s linear .2s;
  }
  .menu a { padding: 14px 16px; font-size: 1.0625rem; }
  .menu-mo .menu { opacity: 1; visibility: visible; transform: none; transition: opacity .2s ease, transform .2s ease; }
  .nut-menu {
    display: inline-grid;
    place-items: center;
    width: 46px;
    height: 46px;
    margin-left: auto;
    border-radius: 50%;
    border: 1px solid var(--vien-sang);
    background: rgba(255, 255, 255, .07);
    color: var(--ngan);
    cursor: pointer;
  }
  .nut-menu svg { width: 22px; height: 22px; }
  .thanh .btn-goi-dau { display: none; }
  .hero-luoi { grid-template-columns: 1fr; }
  .hero { padding-top: calc(var(--header-h) + 40px); }
  .hero-anh { max-width: 520px; width: 100%; margin-inline: auto; }
  .the-gio { left: 16px; bottom: 16px; }
  .lien-he { grid-template-columns: 1fr; border-radius: 30px; }
  .ve-luoi { grid-template-columns: 1fr; }
  .ve-logo { max-width: 420px; width: 80%; margin-inline: auto; }
  .gia { grid-template-columns: 1fr; }
}

/* ---------- Điện thoại ---------- */
@media (max-width: 640px) {
  body { font-size: 1rem; }
  .thanh { height: 58px; }
  .logo img { width: 38px; height: 38px; }
  .logo-phu { display: none; }
  .hero { min-height: auto; padding-bottom: 56px; }
  .hero-nut .btn { flex: 1 1 100%; }
  .khung-anh { aspect-ratio: 4 / 4.4; border-radius: 28px; }
  .bento { grid-template-columns: 1fr; }
  .o-lon, .o-cao, .o-vua, .o-rong { grid-column: auto; min-height: 380px; }
  .buoc { grid-template-columns: 1fr; }
  .so-lieu { grid-template-columns: 1fr 1fr; }
  .goi-nhanh {
    position: fixed;
    left: 10px;
    right: 10px;
    bottom: calc(10px + env(safe-area-inset-bottom));
    z-index: 60;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    padding: 8px;
    border-radius: 999px;
    background: rgba(20, 12, 54, .82);
    border: 1px solid var(--vien-sang);
    -webkit-backdrop-filter: blur(16px);
    backdrop-filter: blur(16px);
    box-shadow: 0 18px 40px -16px rgba(0, 0, 0, .9);
    transform: translateY(140%);
    transition: transform .35s cubic-bezier(.2, .7, .2, 1);
  }
  .goi-nhanh .btn { --h: 48px; padding: 0 12px; }
  .hien-goi .goi-nhanh { transform: none; }
  .chan { padding-bottom: calc(100px + env(safe-area-inset-bottom)); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; }
  .vao .hien, .vao .khung-anh, .vao .the-gio { opacity: 1; transform: none; clip-path: none; }
}