/* ==========================================================================
   ĐIỆN LẠNH HOÀNG ANH — Hệ thống giao diện
   Tông chủ đạo: xanh dương Điện Máy Xanh | Nền: trắng
   ========================================================================== */

/* ---------- 1. Biến hệ thống ---------- */
:root {
  /* Xanh chủ đạo */
  --blue-900: #0B3D6B;
  --blue-800: #0F4E88;
  --blue-700: #135FA3;
  --blue-600: #1A6BAF;
  --blue-500: #2478BC; /* màu chính */
  --blue-400: #3E90D0;
  --blue-300: #74B2E0;
  --blue-100: #D3E7F7;
  --blue-50:  #EDF5FC;

  /* Vàng nhấn (CTA) */
  --gold-600: #E09400;
  --gold-500: #FFB300;
  --gold-400: #FFC93C;
  --gold-50:  #FFF6E0;

  /* Trung tính */
  --white: #FFFFFF;
  --ink-900: #16232E;
  --ink-700: #33454F;
  --ink-500: #5A6B76;
  --ink-400: #7A8993;
  --line: #E2E9EF;
  --line-soft: #EFF3F7;
  --bg-soft: #F6F9FC;

  --green: #1E9E5A;
  --red: #E03E3E;

  /* Kích thước */
  --wrap: 1180px;
  --gap: 24px;
  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 20px;

  --shadow-xs: 0 1px 2px rgba(16, 42, 67, .06);
  --shadow-sm: 0 2px 8px rgba(16, 42, 67, .07);
  --shadow: 0 6px 20px rgba(16, 42, 67, .09);
  --shadow-lg: 0 16px 40px rgba(16, 42, 67, .14);

  --header-h: 74px;
  --font: "Be Vietnam Pro", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --ease: cubic-bezier(.4, 0, .2, 1);
}

/* ---------- 2. Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 96px; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.65;
  color: var(--ink-700);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: var(--blue-600); text-decoration: none; transition: color .2s var(--ease); }
a:hover { color: var(--blue-800); }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, h5 { margin: 0; color: var(--ink-900); line-height: 1.28; font-weight: 700; letter-spacing: -.01em; }
h1 { font-size: clamp(30px, 4.6vw, 46px); }
h2 { font-size: clamp(24px, 3.2vw, 34px); }
h3 { font-size: clamp(18px, 2vw, 21px); }
p { margin: 0 0 14px; }
p:last-child { margin-bottom: 0; }
button { font-family: inherit; cursor: pointer; }
:focus-visible { outline: 3px solid var(--blue-300); outline-offset: 2px; border-radius: 4px; }

/* ---------- 3. Bố cục nền tảng ---------- */
.wrap { width: 100%; max-width: var(--wrap); margin-inline: auto; padding-inline: 20px; }
.section { padding: 68px 0; }
.section--soft { background: var(--bg-soft); }
.section--blue { background: linear-gradient(160deg, var(--blue-700), var(--blue-900)); color: #DCEAF6; }
.section--blue h2, .section--blue h3 { color: #fff; }

.sec-head { text-align: center; max-width: 720px; margin: 0 auto 42px; }
.sec-head .eyebrow {
  display: inline-block; font-size: 13px; font-weight: 700; letter-spacing: .12em;
  text-transform: uppercase; color: var(--blue-500); background: var(--blue-50);
  padding: 6px 16px; border-radius: 100px; margin-bottom: 14px;
}
.section--blue .sec-head .eyebrow { color: #fff; background: rgba(255,255,255,.16); }
.sec-head h2 { margin-bottom: 12px; }
.sec-head p { color: var(--ink-500); font-size: 16.5px; }
.section--blue .sec-head p { color: #C3DAEE; }

/* Lưới cân đối — mọi ô luôn bằng nhau */
.grid { display: grid; gap: var(--gap); align-items: stretch; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid > * { min-width: 0; }

/* ---------- 4. Nút ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  padding: 13px 26px; border-radius: 100px; border: 2px solid transparent;
  font-weight: 700; font-size: 15.5px; line-height: 1.2; white-space: nowrap;
  transition: transform .18s var(--ease), box-shadow .18s var(--ease), background .18s var(--ease), color .18s var(--ease);
}
.btn svg { width: 18px; height: 18px; flex: none; }
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--blue-500); color: #fff; box-shadow: 0 6px 18px rgba(36, 120, 188, .32); }
.btn-primary:hover { background: var(--blue-700); color: #fff; box-shadow: 0 10px 26px rgba(36, 120, 188, .42); }
.btn-gold { background: var(--gold-500); color: #4A3000; box-shadow: 0 6px 18px rgba(255, 179, 0, .38); }
.btn-gold:hover { background: var(--gold-400); color: #4A3000; box-shadow: 0 10px 26px rgba(255, 179, 0, .5); }
.btn-ghost { background: rgba(255,255,255,.12); color: #fff; border-color: rgba(255,255,255,.55); }
.btn-ghost:hover { background: #fff; color: var(--blue-700); border-color: #fff; }
.btn-outline { background: #fff; color: var(--blue-600); border-color: var(--blue-100); }
.btn-outline:hover { color: var(--blue-800); border-color: var(--blue-500); background: var(--blue-50); }
.btn-block { width: 100%; }
.btn-lg { padding: 16px 32px; font-size: 17px; }

/* ---------- 5. Thanh trên cùng ---------- */
.topbar {
  background: var(--blue-800); color: #C9DFF1; font-size: 13.5px;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.topbar .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 40px; }
.topbar__left { display: flex; align-items: center; gap: 20px; }
.topbar__item { display: inline-flex; align-items: center; gap: 7px; }
.topbar__item svg { width: 15px; height: 15px; flex: none; opacity: .85; }
.topbar__right { display: flex; align-items: center; gap: 8px; }
.topbar a { color: #fff; font-weight: 600; }
.topbar a:hover { color: var(--gold-400); }
.topbar__hot { display: inline-flex; align-items: center; gap: 6px; }
.topbar__hot b { color: var(--gold-400); letter-spacing: .02em; }

/* ---------- 6. Header ---------- */
.header {
  position: sticky; top: 0; z-index: 200; background: #fff;
  border-bottom: 1px solid var(--line); box-shadow: var(--shadow-xs);
}
.header .wrap { display: flex; align-items: center; gap: 20px; height: var(--header-h); }

.logo { display: inline-flex; align-items: center; gap: 11px; flex: none; }
.logo__mark {
  width: 44px; height: 44px; border-radius: 12px; flex: none;
  background: linear-gradient(145deg, var(--blue-400), var(--blue-700));
  display: grid; place-items: center; box-shadow: 0 4px 12px rgba(36,120,188,.35);
}
.logo__mark svg { width: 26px; height: 26px; color: #fff; }
.logo__text { display: flex; flex-direction: column; line-height: 1.12; }
.logo__text b { font-size: 17px; font-weight: 800; color: var(--blue-800); letter-spacing: -.02em; white-space: nowrap; }
.logo__text span { font-size: 10.5px; font-weight: 600; letter-spacing: .16em; text-transform: uppercase; color: var(--ink-400); }

.nav { margin-left: auto; }
.nav__list { display: flex; align-items: center; gap: 2px; }
.nav__link {
  display: block; padding: 9px 13px; border-radius: 9px; font-size: 15px;
  font-weight: 600; color: var(--ink-700); white-space: nowrap;
}
.nav__link:hover { background: var(--blue-50); color: var(--blue-700); }
.nav__item.is-active > .nav__link { color: var(--blue-600); background: var(--blue-50); }

.nav__item--has { position: relative; }
.nav__item--has > .nav__link::after {
  content: ""; display: inline-block; width: 6px; height: 6px; margin-left: 7px; vertical-align: 2px;
  border-right: 2px solid currentColor; border-bottom: 2px solid currentColor; transform: rotate(45deg) translateY(-2px);
  opacity: .55;
}
.dropdown {
  position: absolute; top: calc(100% + 8px); left: 50%; transform: translate(-50%, 8px);
  min-width: 268px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow-lg); padding: 8px; opacity: 0; visibility: hidden;
  transition: opacity .2s var(--ease), transform .2s var(--ease), visibility .2s;
}
.nav__item--has:hover .dropdown, .nav__item--has:focus-within .dropdown {
  opacity: 1; visibility: visible; transform: translate(-50%, 0);
}
.dropdown a {
  display: flex; align-items: center; gap: 11px; padding: 10px 12px; border-radius: 9px;
  font-size: 14.5px; font-weight: 600; color: var(--ink-700);
}
.dropdown a:hover { background: var(--blue-50); color: var(--blue-700); }
.dropdown a svg { width: 19px; height: 19px; flex: none; color: var(--blue-500); }

.header__cta { display: flex; align-items: center; gap: 10px; flex: none; }
.header__phone {
  display: inline-flex; align-items: center; gap: 10px; padding: 7px 16px 7px 8px;
  border-radius: 100px; background: var(--blue-50); border: 1px solid var(--blue-100);
}
.header__phone-ic {
  width: 32px; height: 32px; border-radius: 50%; background: var(--blue-500); color: #fff;
  display: grid; place-items: center; flex: none;
}
.header__phone-ic svg { width: 16px; height: 16px; }
.header__phone-txt { display: flex; flex-direction: column; line-height: 1.15; }
.header__phone-txt small { font-size: 10.5px; font-weight: 600; text-transform: uppercase; letter-spacing: .08em; color: var(--ink-400); }
.header__phone-txt b { font-size: 16px; color: var(--blue-800); font-weight: 800; letter-spacing: -.01em; }

.burger {
  display: none; width: 44px; height: 44px; border: 1px solid var(--line); background: #fff;
  border-radius: 11px; padding: 0; place-items: center; flex: none;
}
.burger span { display: block; width: 20px; height: 2px; background: var(--ink-900); border-radius: 2px; position: relative; transition: .25s var(--ease); }
.burger span::before, .burger span::after {
  content: ""; position: absolute; left: 0; width: 20px; height: 2px; background: var(--ink-900);
  border-radius: 2px; transition: .25s var(--ease);
}
.burger span::before { top: -6px; }
.burger span::after { top: 6px; }
body.menu-open .burger span { background: transparent; }
body.menu-open .burger span::before { top: 0; transform: rotate(45deg); }
body.menu-open .burger span::after { top: 0; transform: rotate(-45deg); }

/* ---------- 7. Hero ---------- */
.hero { position: relative; background: linear-gradient(155deg, var(--blue-800) 0%, var(--blue-600) 55%, var(--blue-500) 100%); overflow: hidden; }
.hero::before {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(900px 460px at 88% 8%, rgba(255,255,255,.16), transparent 62%),
    radial-gradient(620px 420px at 6% 96%, rgba(0,0,0,.22), transparent 60%);
}
.hero__inner {
  position: relative; display: grid; grid-template-columns: 1.06fr .94fr;
  gap: 52px; align-items: center; padding: 62px 0 70px;
}
.hero__badge {
  display: inline-flex; align-items: center; gap: 9px; padding: 8px 18px; border-radius: 100px;
  background: rgba(255,255,255,.15); border: 1px solid rgba(255,255,255,.28);
  color: #fff; font-size: 13.5px; font-weight: 600; margin-bottom: 20px; backdrop-filter: blur(6px);
}
.hero__badge i { width: 8px; height: 8px; border-radius: 50%; background: #4CE38A; box-shadow: 0 0 0 4px rgba(76,227,138,.28); flex: none; }
.hero h1 { color: #fff; margin-bottom: 18px; }
.hero h1 em { font-style: normal; color: var(--gold-400); }
.hero__desc { color: #D5E7F6; font-size: 17px; max-width: 540px; margin-bottom: 26px; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 13px; margin-bottom: 30px; }
.hero__stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; max-width: 520px; }
.hero__stat {
  background: rgba(255,255,255,.11); border: 1px solid rgba(255,255,255,.2);
  border-radius: var(--radius); padding: 15px 12px; text-align: center; backdrop-filter: blur(6px);
}
.hero__stat b { display: block; font-size: 25px; font-weight: 800; color: #fff; line-height: 1.1; }
.hero__stat span { font-size: 12.5px; color: #BFD8EC; font-weight: 500; }

.hero__media { position: relative; }
.hero__media img {
  width: 100%; height: 430px; object-fit: cover; border-radius: var(--radius-lg);
  box-shadow: 0 26px 60px rgba(4, 30, 55, .42); border: 5px solid rgba(255,255,255,.16);
}
.hero__float {
  position: absolute; left: -22px; bottom: 30px; background: #fff; border-radius: var(--radius);
  padding: 14px 18px; box-shadow: var(--shadow-lg); display: flex; align-items: center; gap: 12px; max-width: 258px;
}
.hero__float-ic { width: 42px; height: 42px; border-radius: 12px; background: var(--gold-50); display: grid; place-items: center; flex: none; }
.hero__float-ic svg { width: 22px; height: 22px; color: var(--gold-600); }
.hero__float b { display: block; font-size: 15px; color: var(--ink-900); line-height: 1.25; }
.hero__float span { font-size: 12.5px; color: var(--ink-500); }

/* Dải cam kết dưới hero */
.trust { background: #fff; border-bottom: 1px solid var(--line); }
.trust__grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.trust__item { display: flex; align-items: center; gap: 13px; padding: 22px 20px; border-right: 1px solid var(--line-soft); }
.trust__item:last-child { border-right: 0; }
.trust__ic { width: 44px; height: 44px; border-radius: 12px; background: var(--blue-50); display: grid; place-items: center; flex: none; }
.trust__ic svg { width: 23px; height: 23px; color: var(--blue-500); }
.trust__item b { display: block; font-size: 15px; color: var(--ink-900); line-height: 1.3; }
.trust__item span { font-size: 13px; color: var(--ink-500); }

/* ---------- 8. Thẻ dịch vụ ---------- */
.svc {
  display: flex; flex-direction: column; height: 100%; background: #fff;
  border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease), border-color .25s var(--ease);
}
.svc:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: var(--blue-100); }
.svc__media { position: relative; aspect-ratio: 16 / 10; overflow: hidden; background: var(--blue-50); }
.svc__media img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s var(--ease); }
.svc:hover .svc__media img { transform: scale(1.06); }
.svc__tag {
  position: absolute; top: 13px; left: 13px; background: rgba(255,255,255,.95); color: var(--blue-700);
  font-size: 12px; font-weight: 700; padding: 5px 12px; border-radius: 100px; backdrop-filter: blur(4px);
}
.svc__body { padding: 20px 20px 22px; display: flex; flex-direction: column; flex: 1; }
.svc__ic {
  width: 46px; height: 46px; border-radius: 13px; background: var(--blue-50);
  display: grid; place-items: center; margin: -46px 0 14px; position: relative;
  border: 3px solid #fff; box-shadow: var(--shadow-sm);
}
.svc__ic svg { width: 24px; height: 24px; color: var(--blue-500); }
.svc h3 { margin-bottom: 9px; }
.svc h3 a { color: inherit; }
.svc h3 a:hover { color: var(--blue-600); }
.svc__body > p { color: var(--ink-500); font-size: 14.5px; margin-bottom: 14px; }
.svc__list { margin-bottom: 18px; display: grid; gap: 7px; }
.svc__list li { position: relative; padding-left: 24px; font-size: 14px; color: var(--ink-700); }
.svc__list li::before {
  content: ""; position: absolute; left: 0; top: 7px; width: 15px; height: 8px;
  border-left: 2.5px solid var(--green); border-bottom: 2.5px solid var(--green);
  transform: rotate(-45deg); border-radius: 1px;
}
.svc__foot { margin-top: auto; padding-top: 16px; border-top: 1px dashed var(--line); display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.svc__price { font-size: 13px; color: var(--ink-500); line-height: 1.3; }
.svc__price b { display: block; font-size: 17px; color: var(--blue-700); font-weight: 800; }
.svc__more { display: inline-flex; align-items: center; gap: 6px; font-weight: 700; font-size: 14.5px; color: var(--blue-600); }
.svc__more svg { width: 16px; height: 16px; transition: transform .2s var(--ease); }
.svc__more:hover svg { transform: translateX(4px); }

/* ---------- 9. Thẻ lý do / quy trình ---------- */
.feat {
  height: 100%; background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px 22px; text-align: center; transition: transform .25s var(--ease), box-shadow .25s var(--ease);
}
.feat:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.feat__ic {
  width: 60px; height: 60px; margin: 0 auto 16px; border-radius: 17px;
  background: linear-gradient(145deg, var(--blue-50), var(--blue-100)); display: grid; place-items: center;
}
.feat__ic svg { width: 29px; height: 29px; color: var(--blue-600); }
.feat h3 { font-size: 17.5px; margin-bottom: 8px; }
.feat p { font-size: 14.5px; color: var(--ink-500); }

.step { height: 100%; position: relative; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 30px 22px 24px; text-align: center; }
.step__num {
  position: absolute; top: -20px; left: 50%; transform: translateX(-50%);
  width: 44px; height: 44px; border-radius: 50%; background: var(--blue-500); color: #fff;
  display: grid; place-items: center; font-weight: 800; font-size: 18px;
  border: 4px solid #fff; box-shadow: 0 4px 14px rgba(36,120,188,.35);
}
.step h3 { font-size: 17px; margin: 10px 0 8px; }
.step p { font-size: 14.5px; color: var(--ink-500); }

/* ---------- 10. Bảng giá ---------- */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; box-shadow: var(--shadow-xs); }
table.price { width: 100%; border-collapse: collapse; min-width: 620px; }
table.price caption { caption-side: top; text-align: left; padding: 18px 20px 4px; font-weight: 700; color: var(--ink-900); font-size: 17px; }
table.price thead th { background: var(--blue-500); color: #fff; font-size: 14px; font-weight: 700; text-align: left; padding: 14px 18px; white-space: nowrap; }
table.price thead th:last-child, table.price tbody td:last-child { text-align: right; }
table.price tbody td { padding: 13px 18px; border-top: 1px solid var(--line-soft); font-size: 14.5px; }
table.price tbody tr:nth-child(even) { background: var(--bg-soft); }
table.price tbody tr:hover { background: var(--blue-50); }
table.price .amount { font-weight: 800; color: var(--blue-700); white-space: nowrap; }
.price-note { margin-top: 14px; font-size: 13.5px; color: var(--ink-500); display: flex; gap: 9px; align-items: flex-start; }
.price-note svg { width: 17px; height: 17px; color: var(--gold-600); flex: none; margin-top: 3px; }

/* ---------- 11. Đánh giá ---------- */
.review { height: 100%; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 24px; display: flex; flex-direction: column; }
.review__stars { display: flex; gap: 3px; margin-bottom: 13px; }
.review__stars svg { width: 17px; height: 17px; color: var(--gold-500); }
.review p { font-size: 15px; color: var(--ink-700); font-style: italic; margin-bottom: 20px; }
.review__who { margin-top: auto; display: flex; align-items: center; gap: 12px; padding-top: 16px; border-top: 1px solid var(--line-soft); }
.review__ava {
  width: 44px; height: 44px; border-radius: 50%; flex: none; display: grid; place-items: center;
  background: linear-gradient(145deg, var(--blue-400), var(--blue-700)); color: #fff; font-weight: 800; font-size: 16px;
}
.review__who b { display: block; font-size: 15px; color: var(--ink-900); line-height: 1.3; }
.review__who span { font-size: 13px; color: var(--ink-500); }

/* ---------- 12. FAQ ---------- */
.faq { display: grid; gap: 12px; max-width: 880px; margin-inline: auto; }
.faq__item { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: border-color .2s var(--ease), box-shadow .2s var(--ease); }
.faq__item.is-open { border-color: var(--blue-300); box-shadow: var(--shadow-sm); }
.faq__q {
  width: 100%; background: none; border: 0; text-align: left; padding: 18px 54px 18px 20px;
  font-size: 16px; font-weight: 700; color: var(--ink-900); position: relative; line-height: 1.45;
}
.faq__q::after {
  content: ""; position: absolute; right: 22px; top: 50%; width: 10px; height: 10px; margin-top: -7px;
  border-right: 2.5px solid var(--blue-500); border-bottom: 2.5px solid var(--blue-500);
  transform: rotate(45deg); transition: transform .25s var(--ease);
}
.faq__item.is-open .faq__q::after { transform: rotate(-135deg); margin-top: -2px; }
.faq__a { max-height: 0; overflow: hidden; transition: max-height .3s var(--ease); }
.faq__a > div { padding: 0 20px 20px; color: var(--ink-500); font-size: 15px; }

/* ---------- 13. Dải CTA ---------- */
.cta-band { background: linear-gradient(135deg, var(--blue-700), var(--blue-900)); position: relative; overflow: hidden; }
.cta-band::after {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(660px 320px at 82% 12%, rgba(255,255,255,.14), transparent 60%);
}
.cta-band .wrap { position: relative; display: flex; align-items: center; justify-content: space-between; gap: 34px; padding-block: 46px; }
.cta-band h2 { color: #fff; margin-bottom: 8px; }
.cta-band p { color: #C6DCEF; font-size: 16.5px; }
.cta-band__actions { display: flex; gap: 12px; flex-wrap: wrap; flex: none; }

/* ---------- 14. Khu vực phục vụ ---------- */
.areas { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; }
.areas li {
  background: #fff; border: 1px solid var(--line); border-radius: 100px; padding: 9px 18px;
  font-size: 14.5px; font-weight: 600; color: var(--ink-700); display: inline-flex; align-items: center; gap: 8px;
  transition: .2s var(--ease);
}
.areas li:hover { border-color: var(--blue-400); color: var(--blue-700); background: var(--blue-50); transform: translateY(-2px); }
.areas li svg { width: 15px; height: 15px; color: var(--blue-500); flex: none; }

/* ---------- 15. Trang nội dung ---------- */
.pagehead { background: linear-gradient(150deg, var(--blue-800), var(--blue-600)); color: #fff; padding: 44px 0 48px; position: relative; overflow: hidden; }
.pagehead::before { content: ""; position: absolute; inset: 0; background: radial-gradient(700px 340px at 85% 10%, rgba(255,255,255,.14), transparent 62%); }
.pagehead .wrap { position: relative; }
.pagehead h1 { color: #fff; margin-bottom: 12px; max-width: 820px; }
.pagehead p { color: #CFE3F4; font-size: 17px; max-width: 720px; }
.crumb { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; font-size: 13.5px; margin-bottom: 16px; color: #A9C9E3; }
.crumb a { color: #DCEBF7; font-weight: 600; }
.crumb a:hover { color: var(--gold-400); }
.crumb span[aria-current] { color: #fff; }
.crumb .sep { opacity: .55; }

.layout { display: grid; grid-template-columns: minmax(0, 1fr) 330px; gap: 40px; align-items: start; }

.prose { font-size: 16px; color: var(--ink-700); }
.prose > h2 { margin: 38px 0 14px; padding-bottom: 12px; border-bottom: 2px solid var(--blue-50); }
.prose > h2:first-child { margin-top: 0; }
.prose > h3 { margin: 26px 0 10px; font-size: 19px; color: var(--blue-800); }
.prose p { margin-bottom: 15px; line-height: 1.75; }
.prose figure { margin: 24px 0; }
.prose figure img { width: 100%; height: 330px; object-fit: cover; border-radius: var(--radius); box-shadow: var(--shadow-sm); }
.prose figcaption { margin-top: 10px; font-size: 13.5px; color: var(--ink-400); text-align: center; font-style: italic; }
.prose ul.check { display: grid; gap: 10px; margin: 0 0 18px; }
.prose ul.check li { position: relative; padding-left: 30px; line-height: 1.65; }
.prose ul.check li::before {
  content: ""; position: absolute; left: 0; top: 4px; width: 19px; height: 19px; border-radius: 50%;
  background: var(--blue-50); box-shadow: inset 0 0 0 1.5px var(--blue-100);
}
.prose ul.check li::after {
  content: ""; position: absolute; left: 5.5px; top: 9px; width: 8px; height: 4.5px;
  border-left: 2px solid var(--blue-600); border-bottom: 2px solid var(--blue-600); transform: rotate(-45deg);
}
.prose ol.num { counter-reset: n; display: grid; gap: 12px; margin: 0 0 18px; }
.prose ol.num li { counter-increment: n; position: relative; padding-left: 42px; line-height: 1.65; }
.prose ol.num li::before {
  content: counter(n); position: absolute; left: 0; top: 1px; width: 28px; height: 28px; border-radius: 9px;
  background: var(--blue-500); color: #fff; display: grid; place-items: center; font-size: 14px; font-weight: 800;
}
.callout {
  background: var(--blue-50); border-left: 4px solid var(--blue-500); border-radius: 0 var(--radius) var(--radius) 0;
  padding: 18px 22px; margin: 24px 0; font-size: 15px;
}
.callout b { color: var(--blue-800); }
.callout--warn { background: var(--gold-50); border-left-color: var(--gold-500); }
.callout--warn b { color: #8A5A00; }

.sym-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 14px; margin: 20px 0 24px; }
.sym {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 18px;
  display: flex; gap: 13px; align-items: flex-start;
}
.sym__ic { width: 38px; height: 38px; border-radius: 11px; background: var(--gold-50); display: grid; place-items: center; flex: none; }
.sym__ic svg { width: 20px; height: 20px; color: var(--gold-600); }
.sym b { display: block; font-size: 15px; color: var(--ink-900); margin-bottom: 3px; line-height: 1.35; }
.sym span { font-size: 13.5px; color: var(--ink-500); line-height: 1.55; }

/* Sidebar */
.side { position: sticky; top: 96px; display: grid; gap: 20px; }
.card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-xs); }
.card__head { padding: 15px 20px; background: var(--blue-500); color: #fff; font-weight: 700; font-size: 16px; display: flex; align-items: center; gap: 9px; }
.card__head svg { width: 19px; height: 19px; flex: none; }
.card__body { padding: 18px 20px; }
.side-nav li + li { border-top: 1px solid var(--line-soft); }
.side-nav a { display: flex; align-items: center; gap: 10px; padding: 12px 20px; font-size: 14.5px; font-weight: 600; color: var(--ink-700); }
.side-nav a:hover { background: var(--blue-50); color: var(--blue-700); }
.side-nav a svg { width: 18px; height: 18px; color: var(--blue-500); flex: none; }
.side-nav .is-current a { background: var(--blue-50); color: var(--blue-700); box-shadow: inset 3px 0 0 var(--blue-500); }

.hotcard { background: linear-gradient(155deg, var(--blue-700), var(--blue-900)); color: #fff; border-radius: var(--radius); padding: 26px 22px; text-align: center; }
.hotcard__ic { width: 56px; height: 56px; margin: 0 auto 14px; border-radius: 50%; background: rgba(255,255,255,.15); display: grid; place-items: center; }
.hotcard__ic svg { width: 27px; height: 27px; color: #fff; }
.hotcard h3 { color: #fff; font-size: 18px; margin-bottom: 6px; }
.hotcard p { color: #BFD8EC; font-size: 14px; margin-bottom: 16px; }
.hotcard__nums { display: grid; gap: 9px; }
.hotcard__num {
  display: flex; align-items: center; justify-content: center; gap: 9px; background: #fff; color: var(--blue-800);
  border-radius: 100px; padding: 11px 16px; font-weight: 800; font-size: 18px; letter-spacing: -.01em;
  transition: .2s var(--ease);
}
.hotcard__num:hover { background: var(--gold-500); color: #4A3000; transform: translateY(-2px); }
.hotcard__num svg { width: 17px; height: 17px; flex: none; }

/* ---------- 16. Form liên hệ ---------- */
.form { display: grid; gap: 15px; }
.form__row { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 15px; }
.field { display: grid; gap: 6px; }
.field label { font-size: 14px; font-weight: 600; color: var(--ink-900); }
.field label .req { color: var(--red); }
.field input, .field select, .field textarea {
  width: 100%; padding: 12px 14px; border: 1px solid var(--line); border-radius: 10px;
  font-family: inherit; font-size: 15px; color: var(--ink-900); background: #fff;
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease);
}
.field textarea { resize: vertical; min-height: 118px; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--blue-400); box-shadow: 0 0 0 4px var(--blue-50);
}
.field .err { font-size: 12.5px; color: var(--red); display: none; }
.field.is-err input, .field.is-err select, .field.is-err textarea { border-color: var(--red); }
.field.is-err .err { display: block; }
.form__ok {
  display: none; background: #E9F8F0; border: 1px solid #A8E2C4; color: #14663C;
  border-radius: var(--radius); padding: 15px 18px; font-size: 15px; font-weight: 600;
  align-items: flex-start; gap: 11px;
}
.form__ok.is-on { display: flex; }
.form__ok svg { width: 20px; height: 20px; flex: none; margin-top: 2px; }

.info-list { display: grid; gap: 16px; }
.info-list li { display: flex; gap: 14px; align-items: flex-start; }
.info-list__ic { width: 42px; height: 42px; border-radius: 12px; background: var(--blue-50); display: grid; place-items: center; flex: none; }
.info-list__ic svg { width: 21px; height: 21px; color: var(--blue-600); }
.info-list b { display: block; font-size: 14px; color: var(--ink-400); font-weight: 600; text-transform: uppercase; letter-spacing: .05em; }
.info-list span, .info-list a { font-size: 16px; color: var(--ink-900); font-weight: 600; }
.info-list a:hover { color: var(--blue-600); }

.map-frame { border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); line-height: 0; box-shadow: var(--shadow-xs); }
.map-frame iframe { width: 100%; height: 380px; border: 0; }

/* ---------- 17. Footer ---------- */
.footer { background: var(--blue-900); color: #A9C6DE; padding-top: 56px; font-size: 14.5px; }
.footer__grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.35fr; gap: 38px; padding-bottom: 44px; }
.footer h4 { color: #fff; font-size: 16px; margin-bottom: 18px; position: relative; padding-bottom: 11px; }
.footer h4::after { content: ""; position: absolute; left: 0; bottom: 0; width: 38px; height: 3px; background: var(--gold-500); border-radius: 2px; }
.footer a { color: #A9C6DE; }
.footer a:hover { color: #fff; }
.footer__brand .logo__text b { color: #fff; }
.footer__brand .logo__text span { color: #7FA5C4; }
.footer__brand p { margin: 16px 0 18px; line-height: 1.7; }
.footer__links li + li { margin-top: 10px; }
.footer__links a { display: inline-flex; align-items: center; gap: 8px; }
.footer__links a::before { content: ""; width: 5px; height: 5px; border-radius: 50%; background: var(--blue-400); flex: none; }
.footer__contact li { display: flex; gap: 11px; margin-bottom: 14px; align-items: flex-start; }
.footer__contact svg { width: 18px; height: 18px; color: var(--gold-500); flex: none; margin-top: 3px; }
.footer__contact b { color: #fff; font-weight: 700; }
.footer__hot {
  display: inline-flex; align-items: center; gap: 10px; background: rgba(255,255,255,.1);
  border: 1px solid rgba(255,255,255,.2); border-radius: 100px; padding: 10px 20px; margin-top: 6px;
  color: #fff; font-weight: 800; font-size: 17px;
}
.footer__hot:hover { background: var(--gold-500); color: #4A3000; border-color: var(--gold-500); }
.footer__hot svg { width: 18px; height: 18px; }
.footer__bottom {
  border-top: 1px solid rgba(255,255,255,.12); padding: 20px 0; display: flex;
  align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; font-size: 13.5px;
}
.footer__bottom nav { display: flex; gap: 20px; flex-wrap: wrap; }

/* ---------- 18. Nút nổi ---------- */
.floats { position: fixed; left: 16px; bottom: 18px; z-index: 300; display: grid; gap: 12px; }
.float {
  width: 54px; height: 54px; border-radius: 50%; display: grid; place-items: center;
  color: #fff; box-shadow: 0 6px 20px rgba(0,0,0,.26); position: relative; transition: transform .2s var(--ease);
}
.float:hover { transform: scale(1.09); color: #fff; }
.float svg { width: 25px; height: 25px; }
.float--call { background: #1FA855; animation: ring 2.4s infinite; }
.float--zalo { background: #0068FF; font-weight: 800; font-size: 14px; letter-spacing: -.02em; }
@keyframes ring {
  0%, 100% { box-shadow: 0 6px 20px rgba(0,0,0,.26), 0 0 0 0 rgba(31,168,85,.55); }
  70% { box-shadow: 0 6px 20px rgba(0,0,0,.26), 0 0 0 16px rgba(31,168,85,0); }
}
.float__label {
  position: absolute; left: 64px; top: 50%; transform: translateY(-50%) translateX(-8px);
  background: var(--ink-900); color: #fff; font-size: 13px; font-weight: 600; padding: 7px 13px;
  border-radius: 8px; white-space: nowrap; opacity: 0; pointer-events: none; transition: .2s var(--ease);
}
.float:hover .float__label { opacity: 1; transform: translateY(-50%) translateX(0); }

.to-top {
  position: fixed; right: 16px; bottom: 18px; z-index: 300; width: 46px; height: 46px; border-radius: 50%;
  background: var(--blue-500); color: #fff; border: 0; display: grid; place-items: center;
  box-shadow: var(--shadow); opacity: 0; visibility: hidden; transform: translateY(10px); transition: .25s var(--ease);
}
.to-top.is-on { opacity: 1; visibility: visible; transform: none; }
.to-top svg { width: 20px; height: 20px; }

/* Thanh gọi nhanh mobile */
.mobar { display: none; position: fixed; left: 0; right: 0; bottom: 0; z-index: 300; background: #fff; border-top: 1px solid var(--line); box-shadow: 0 -3px 16px rgba(16,42,67,.1); }
.mobar__grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.mobar a { display: grid; place-items: center; gap: 3px; padding: 9px 4px 8px; font-size: 11px; font-weight: 600; color: var(--ink-500); }
.mobar a svg { width: 20px; height: 20px; color: var(--blue-500); }
.mobar a.is-hot { color: var(--green); }
.mobar a.is-hot svg { color: var(--green); }
.mobar a + a { border-left: 1px solid var(--line-soft); }

/* ---------- 19. Đáp ứng ---------- */
@media (max-width: 1080px) {
  .layout { grid-template-columns: 1fr; }
  .side { position: static; grid-template-columns: repeat(2, 1fr); }
  .footer__grid { grid-template-columns: repeat(2, 1fr); gap: 32px; }
}

@media (max-width: 960px) {
  .header .wrap { gap: 12px; }
  .burger { display: grid; order: 3; }
  .nav {
    position: fixed; inset: var(--header-h) 0 0; background: #fff; margin: 0;
    padding: 14px 20px 40px; overflow-y: auto; transform: translateX(100%);
    transition: transform .3s var(--ease); visibility: hidden;
  }
  body.menu-open { overflow: hidden; }
  body.menu-open .nav { transform: none; visibility: visible; }
  .nav__list { flex-direction: column; align-items: stretch; gap: 3px; }
  .nav__link { padding: 13px 14px; font-size: 16px; border-radius: 10px; }
  .nav__item--has > .nav__link::after { float: right; margin-top: 6px; }
  .dropdown {
    position: static; transform: none; opacity: 1; visibility: visible; box-shadow: none;
    border: 0; border-left: 2px solid var(--blue-100); border-radius: 0; margin: 2px 0 6px 16px;
    padding: 0 0 0 6px; min-width: 0; display: none;
  }
  .nav__item--has.is-open .dropdown { display: block; }
  .header__cta .btn { display: none; }
  .hero__inner { grid-template-columns: 1fr; gap: 36px; padding: 44px 0 54px; }
  .hero__media img { height: 320px; }
  .hero__float { left: 12px; bottom: 14px; }
  .hero__desc { max-width: none; }
  .hero__stats { max-width: none; }
  .trust__grid { grid-template-columns: repeat(2, 1fr); }
  .trust__item:nth-child(2n) { border-right: 0; }
  .trust__item:nth-child(-n+2) { border-bottom: 1px solid var(--line-soft); }
  .grid-4 { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .cta-band .wrap { flex-direction: column; text-align: center; }
  .cta-band__actions { justify-content: center; }
}

@media (max-width: 780px) {
  .topbar__left .topbar__item--hide { display: none; }
  .grid-3 { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .section { padding: 52px 0; }
  .sec-head { margin-bottom: 32px; }
  .prose figure img { height: 240px; }
}

@media (max-width: 640px) {
  :root { --gap: 16px; --header-h: 64px; }
  .topbar { display: none; }
  .logo__mark { width: 38px; height: 38px; border-radius: 10px; }
  .logo__mark svg { width: 22px; height: 22px; }
  .logo__text b { font-size: 15px; }
  .logo__text span { font-size: 9px; letter-spacing: .12em; }
  .header__phone { padding: 6px 12px 6px 6px; }
  .header__phone-txt small { display: none; }
  .header__phone-txt b { font-size: 14.5px; }
  .header__phone-ic { width: 28px; height: 28px; }
  body { padding-bottom: 58px; }
  .mobar { display: block; }
  .floats { display: none; }
  .to-top { bottom: 70px; right: 12px; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: minmax(0, 1fr); }
  .form__row { grid-template-columns: minmax(0, 1fr); }
  .sym-grid { grid-template-columns: minmax(0, 1fr); }
  .side { grid-template-columns: minmax(0, 1fr); }
  .footer__grid { grid-template-columns: minmax(0, 1fr); gap: 28px; }
  .footer__bottom { flex-direction: column; text-align: center; }
  .hero__stats { grid-template-columns: repeat(3, 1fr); gap: 8px; }
  .hero__stat { padding: 12px 6px; }
  .hero__stat b { font-size: 20px; }
  .hero__stat span { font-size: 11px; }
  .hero__actions .btn { flex: 1 1 100%; }
  .hero__media img { height: 250px; }
  .hero__float { position: static; margin-top: 14px; max-width: none; }
  .trust__grid { grid-template-columns: minmax(0, 1fr); }
  .trust__item { border-right: 0; border-bottom: 1px solid var(--line-soft); }
  .trust__item:last-child { border-bottom: 0; }
  .prose figure img { height: 200px; }
  .map-frame iframe { height: 300px; }
}

/* ---------- 20. Tiện ích ---------- */
.text-center { text-align: center; }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; }
.visually-hidden {
  position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; scroll-behavior: auto !important; }
}

@media print {
  .topbar, .header, .floats, .to-top, .mobar, .cta-band, .footer { display: none !important; }
  body { padding-bottom: 0; }
}