/* Điện Lạnh Tuyết Sơn (dienlanh) — trang chủ theo mockup dienlanh-home/mockups/home-desktop-v1.png (804px -> 1440 = x1.791) */
:root { --tsn-b: #0a4fb0; --tsn-b2: #083f8f; --tsn-bd: #0b2e6b; --tsn-bl: #eaf3fd; --tsn-r: #e30b17; --tsn-r2: #c70812; --tsn-ink: #0d2453; --tsn-mut: #4a5878; --tsn-line: #d7e3f3;
  --tsn-f: 'Be Vietnam Pro', 'Inter', Arial, sans-serif; }
body, p, li, a, span, div, input, select, textarea, button, label, h1, h2, h3, h4, h5, h6, .nav > li > a { font-family: var(--tsn-f) !important; }
body { background: #fff; }
#main, .home #main { background-color: #fff !important; background-image: none !important; }
.tsn-ic { width: 1em; height: 1em; display: inline-block; vertical-align: -0.14em; flex: 0 0 auto; }
.tsn-mi { display: inline-block; width: 1em; height: 1em; flex: 0 0 auto; background: currentColor; -webkit-mask: var(--m) center/contain no-repeat; mask: var(--m) center/contain no-repeat; }
#button-contact-vr, .button-contact-vr, #zalo-vr, #phone-vr, .absolute-footer, .float-contact, .hotline-phone-ring-wrap, #header-contact { display: none !important; }

/* ---------- header ---------- */
#top-bar { background: var(--tsn-b) !important; }
#top-bar .tsn-tb { display: inline-flex; align-items: center; gap: 40px; color: #fff; font-size: 15px !important; }
#top-bar .tsn-tb, #top-bar .tsn-tb a { color: #fff !important; font-size: 15px !important; display: inline-flex; align-items: center; gap: 11px; }
.tsn-tb .tsn-mi { width: 21px; height: 21px; background: #fff; }
#header .header-main { background: #fff !important; }
#header .header-wrapper { box-shadow: 0 1px 0 #e6edf6 !important; border-bottom: 0 !important; }
#logo { width: auto !important; margin: 0 !important; top: 0 !important; }
#header #logo a { display: inline-flex; align-items: center; gap: 14px; width: 300px; font-size: 27px !important; line-height: 1.12 !important; font-weight: 800 !important; color: var(--tsn-bd) !important; text-transform: uppercase !important; letter-spacing: 0; top: 0; margin: 0; }
#header #logo a::before { content: ""; width: 98px; height: 88px; flex: 0 0 98px; background: url("icons/logo.png") center/contain no-repeat; }
#header .header-main .flex-left { flex: 1 1 auto; justify-content: center; }
#header .header-main .flex-left .header-nav-main { justify-content: center; }
#header .header-nav-main { flex-wrap: nowrap; align-items: center; }
#header .flex-left .header-nav-main > li { margin: 0 17px !important; }
#header .flex-left .header-nav-main > li > a { font-size: 16.5px !important; font-weight: 500 !important; color: var(--tsn-bd) !important; text-transform: none !important; padding: 0 !important; line-height: 40px !important; white-space: nowrap; }
#header .header-nav-main > li > a::after, #header .header-nav-main > li > a::before { display: none !important; }
#header .flex-left .header-nav-main > li > a:hover { color: var(--tsn-b) !important; }
#header .flex-right .header-nav-main > li { margin: 0 !important; }
#header a.tsn-call { display: inline-flex !important; flex-wrap: nowrap !important; white-space: nowrap; align-items: center; gap: 14px; height: 72px; padding: 0 22px !important; border-radius: 7px; background: var(--tsn-r); color: #fff !important; line-height: 1 !important; }
#header a.tsn-call .tsn-mi { width: 30px; height: 30px; background: #fff; }
#header a.tsn-call span { display: flex; flex-direction: column; gap: 5px; font-size: 21px !important; font-weight: 700; }
#header a.tsn-call small { font-size: 16px; font-weight: 500; opacity: .95; }
#header a.tsn-call:hover { background: var(--tsn-r2); }
#header .mobile-nav i, #header .mobile-nav .icon-menu { color: var(--tsn-bd) !important; }
#header .nav-icon a, #header .mobile-nav .nav-icon a { background: transparent !important; color: var(--tsn-bd) !important; }

/* ---------- chung ---------- */
.section.tsn-sec, .section.tsn-hero, .section.tsn-footer { padding: 0 !important; }
.tsn-sec .col, .tsn-hero .col, .tsn-footer .col { padding-bottom: 0 !important; }
.tsn-sec p:not([class]), .tsn-footer p:not([class]), .tsn-hero p:not([class]) { display: contents; }
.tsn-h2 { font-size: 36px; line-height: 1.2; font-weight: 700; color: var(--tsn-ink); margin: 0; letter-spacing: -.01em; }
.tsn-up { text-transform: uppercase; font-size: 32px; }
.tsn-c { text-align: center; }
.tsn-sub { font-size: 17px; color: var(--tsn-mut); margin-top: 6px; }
.tsn-head { display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.tsn-head h2 { flex: 0 0 auto; width: fit-content; }
.tsn-all { color: var(--tsn-b) !important; font-size: 16px; font-weight: 600; display: inline-flex; align-items: center; gap: 8px; white-space: nowrap; }
.tsn-sec h3 a { color: inherit !important; }
img[src=""] { visibility: hidden; }

/* ---------- hero ---------- */
.section.tsn-hero { min-height: 570px; align-items: flex-start !important; }
.tsn-hero .section-bg img.bg { object-position: 70% 30%; }
.tsn-hero-in { padding: 26px 0 40px; }
.tsn-eyebrow { font-size: 18px; font-weight: 600; color: var(--tsn-b); text-transform: uppercase; letter-spacing: .03em; }
.tsn-h1 { font-size: 58px; line-height: 1.12; font-weight: 800; color: var(--tsn-ink) !important; margin: 10px 0 0; letter-spacing: -.015em; }
.tsn-hero-s { font-size: 21px; color: #1f2f52; margin-top: 18px; }
.tsn-checks { list-style: none; margin: 18px 0 0; padding: 0; }
.tsn-checks li { position: relative; padding-left: 47px; margin: 0 0 13px; font-size: 20px; color: #1f2f52; line-height: 1.4; }
.tsn-checks li::before { content: "✓"; position: absolute; left: 0; top: 0; width: 28px; height: 28px; border-radius: 50%; background: var(--tsn-b); color: #fff; font-size: 16px; font-weight: 700; line-height: 28px; text-align: center; }
.tsn-btns { display: flex; gap: 18px; margin-top: 30px; }
.tsn-btn-r, .tsn-btn-o { display: inline-flex; align-items: center; justify-content: center; gap: 14px; height: 61px; border-radius: 6px; font-size: 21px; font-weight: 600; }
.tsn-btn-r { width: 312px; background: var(--tsn-r); color: #fff !important; } .tsn-btn-r .tsn-ic { font-size: 26px; }
.tsn-btn-r:hover { background: var(--tsn-r2); }
.tsn-btn-o { width: 215px; border: 2px solid var(--tsn-b); color: var(--tsn-b) !important; background: #fff; }
.tsn-btn-o:hover { background: var(--tsn-b); color: #fff !important; }

/* ---------- thiết bị ---------- */
.section.tsn-dev-sec { padding: 22px 0 26px !important; }
.tsn-devs { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 23px; margin-top: 30px; }
.tsn-devs > * { min-width: 0; }
.tsn-dev { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 14px; height: 158px; border: 1.5px solid var(--tsn-line); border-radius: 8px; color: var(--tsn-ink) !important; background: #fff; transition: border-color .2s, box-shadow .2s; }
.tsn-dev img { width: auto; max-width: 130px; height: 76px; object-fit: contain; }
.tsn-dev span { display: inline-flex; align-items: center; gap: 16px; font-size: 21px; font-weight: 700; }
.tsn-dev span .tsn-ic { color: var(--tsn-b); font-size: 23px; }
.tsn-dev:hover { border-color: var(--tsn-b); box-shadow: 0 8px 22px rgba(10,79,176,.12); }

/* ---------- bảng giá ---------- */
.section.tsn-price-sec { padding: 28px 0 20px !important; }
.tsn-price { max-width: 1068px; margin: 20px auto 0; }
.tsn-ptabs { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); background: #fff; border: 1px solid var(--tsn-line); border-radius: 6px; overflow: hidden; }
.tsn-ptab { height: 47px; display: flex; align-items: center; justify-content: center; font-size: 16px; color: var(--tsn-ink) !important; border-left: 1px solid var(--tsn-line); }
.tsn-ptab:first-child { border-left: 0; }
.tsn-ptab.is-on { background: var(--tsn-b); color: #fff !important; font-weight: 600; }
.tsn-ptable { margin-top: 16px; background: #fff; border: 1px solid var(--tsn-line); border-radius: 6px; overflow: hidden; }
.tsn-pane { display: none; } .tsn-pane.is-on { display: block; }
.tsn-prow { display: grid; grid-template-columns: 1fr 360px; align-items: center; min-height: 46px; padding: 0 60px; border-top: 1px solid #e9eff8; font-size: 17px; color: #1f2f52; }
.tsn-prow:first-child { border-top: 0; }
.tsn-prow b { text-align: right; font-size: 22px; font-weight: 700; color: var(--tsn-b); }
.tsn-phead { background: #f5f8fd; font-weight: 600; } .tsn-phead b { font-size: 17px; color: var(--tsn-ink); font-weight: 600; }
.tsn-prow > * { border-right: 0; }
.tsn-pnote { display: flex; align-items: center; justify-content: center; gap: 12px; margin-top: 14px; font-size: 16.5px; font-weight: 600; color: var(--tsn-ink); }
.tsn-pnote img { width: 38px; height: 38px; }

/* ---------- dấu hiệu + quy trình ---------- */
.section.tsn-sign-sec { padding: 26px 0 28px !important; }
.tsn-signs { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 46px; margin-top: 20px; }
.tsn-signs > * { min-width: 0; }
.tsn-sg { display: flex; align-items: center; gap: 36px; min-height: 72px; border-bottom: 1px solid #e3e9f2; padding-left: 26px; }
.tsn-sg img { width: 58px; height: 58px; object-fit: contain; flex: 0 0 58px; }
.tsn-sg span { font-size: 19px; color: #1f2f52; }
.tsn-proc-h { margin-top: 30px; }
.tsn-procs { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); margin-top: 26px; }
.tsn-procs > * { min-width: 0; }
.tsn-pc { position: relative; text-align: center; }
.tsn-pc + .tsn-pc::before { content: ""; position: absolute; top: 46px; left: -26%; width: 25%; height: 2px; background: #b9cbe6; }
.tsn-pc-top { display: inline-flex; align-items: center; gap: 12px; }
.tsn-pc-top b { width: 50px; height: 50px; border-radius: 50%; background: var(--tsn-b); color: #fff; font-size: 17px; font-weight: 600; display: flex; align-items: center; justify-content: center; }
.tsn-pc-ic { width: 94px; height: 94px; border-radius: 50%; border: 2px solid #b9cbe6; display: flex; align-items: center; justify-content: center; background: #fff; }
.tsn-pc-ic img { width: 64px; height: 64px; object-fit: contain; }
.tsn-pc h3 { font-size: 20px; font-weight: 700; color: var(--tsn-ink); margin: 10px 0 4px; }
.tsn-pc > div:last-child { font-size: 16px; color: var(--tsn-mut); }

/* ---------- con số ---------- */
.section.tsn-stat-sec { padding: 0 !important; background-color: var(--tsn-b) !important; }
.tsn-stats { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); min-height: 143px; align-items: center; }
.tsn-stats > div { text-align: center; color: #fff; }
.tsn-stats > div + div { border-left: 1px solid rgba(255,255,255,.35); }
.tsn-stats b { display: block; font-size: 49px; font-weight: 700; line-height: 1.1; color: #fff; }
.tsn-stats span { display: block; font-size: 18px; color: #e5eeff; margin-top: 6px; }

/* ---------- khách hàng nói ---------- */
.section.tsn-testi-sec { padding: 20px 0 22px !important; }
.tsn-testis { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 21px; margin-top: 16px; }
.tsn-testis > * { min-width: 0; }
.tsn-tt { background: #fff; border-radius: 8px; padding: 12px 30px 14px; text-align: center; box-shadow: 0 2px 10px rgba(13,36,83,.05); }
.tsn-stars { color: var(--tsn-b); font-size: 26px; letter-spacing: 3px; }
.tsn-tt-q { font-size: 17.5px; line-height: 1.5; color: #1f2f52; margin: 8px 0 14px; }
.tsn-tt-a { display: inline-flex; align-items: center; gap: 22px; font-size: 18px; font-weight: 700; color: var(--tsn-ink); }
.tsn-tt-a i { width: 50px; height: 50px; border-radius: 50%; background: #dbe8f8; color: var(--tsn-b); font-style: normal; font-size: 16px; font-weight: 700; display: flex; align-items: center; justify-content: center; }

/* ---------- kinh nghiệm ---------- */
.section.tsn-blog-sec { padding: 20px 0 18px !important; }
.tsn-posts { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 23px; margin-top: 14px; }
.tsn-posts > * { min-width: 0; }
.tsn-post-img { display: block; height: 188px; border-radius: 4px; overflow: hidden; background: #eef2f7; }
.tsn-post-img img { width: 100%; height: 100%; object-fit: cover; display: block; }
.tsn-post-b { padding-top: 12px; }
.tsn-post-t { font-size: 20px; line-height: 1.3; font-weight: 700; color: var(--tsn-ink); margin: 0 0 6px; }
.tsn-post-e { font-size: 15px; line-height: 1.45; color: var(--tsn-mut); display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.tsn-post-m { display: inline-flex; align-items: center; gap: 8px; margin-top: 8px; color: var(--tsn-b) !important; font-size: 16px; font-weight: 600; }

/* ---------- footer ---------- */
#footer .section.tsn-footer { border-top: 0 !important; }
.section.tsn-footer { padding: 0 !important; }
.tsn-footer .row-full-width { max-width: none !important; margin: 0 !important; padding: 0 !important; }
.tsn-footer .row-full-width > .col { padding: 0 !important; }
.tsn-cta { display: flex; align-items: center; justify-content: center; gap: 16px; height: 54px; background: var(--tsn-r); color: #fff !important; font-size: 29px; font-weight: 600; }
.tsn-cta .tsn-ic { font-size: 30px; }
.tsn-cta:hover { background: var(--tsn-r2); }
.tsn-ft { display: grid; grid-template-columns: 420fr 250fr 265fr 330fr; padding-top: 24px; }
.tsn-ft > * { min-width: 0; }
.tsn-ft-col { border-left: 1px solid rgba(255,255,255,.25); padding-left: 30px; }
.tsn-ft-logo { display: inline-flex; align-items: center; gap: 16px; color: #fff !important; }
.tsn-ft-logo img { width: 92px; height: 82px; object-fit: contain; }
.tsn-ft-logo span { font-size: 27px; line-height: 1.12; font-weight: 800; text-transform: uppercase; }
.tsn-ft-tag { font-size: 16px; line-height: 1.6; color: #e5eeff; margin-top: 14px; max-width: 400px; }
.tsn-ft-col h4 { font-size: 17px; font-weight: 700; color: #fff !important; margin: 4px 0 12px; text-transform: none; letter-spacing: 0; }
.tsn-ft-col a, .tsn-ft-ct > div { display: flex; align-items: flex-start; gap: 16px; font-size: 16px; line-height: 1.45; color: #e5eeff !important; margin-bottom: 8px; }
.tsn-ft-col a:hover { color: #fff !important; text-decoration: underline; }
.tsn-ft-ct .tsn-ic { font-size: 20px; color: #fff; margin-top: 2px; }
.tsn-fbar { border-top: 1px solid rgba(255,255,255,.2); margin-top: 10px; padding: 10px 0 12px; text-align: center; font-size: 14.5px; color: #cfdcf3; }
.tsn-footer a[href^="mailto"] span { overflow-wrap: anywhere; }

/* ---------- mobile ---------- */
@media (max-width: 849px) {
  #top-bar { display: none; }
  #header #logo a { font-size: 17px !important; width: 170px; gap: 8px; }
  #header #logo a::before { width: 42px; height: 38px; flex-basis: 42px; }
  #header .header-inner > .show-for-medium.flex-left, #header .header-inner > .show-for-medium.flex-right { flex: 1 1 0; margin: 0 !important; }
  #header .header-inner > #logo { flex: 0 0 auto; }
  #header .header-inner > .show-for-medium.flex-right .mobile-nav { justify-content: flex-end; }
  #header .mobile-nav a.tsn-call { height: 42px; width: 42px; padding: 0 !important; justify-content: center; border-radius: 50%; }
  #header .mobile-nav a.tsn-call span { display: none; } #header .mobile-nav a.tsn-call .tsn-mi { width: 20px; height: 20px; }
  .section.tsn-hero { min-height: 0; padding-top: 250px !important; background-color: var(--tsn-bl) !important; }
  .section.tsn-hero .section-bg { top: 0; bottom: auto; height: 250px; }
  .section.tsn-hero .section-bg img.bg { object-position: 78% 30%; }
  .tsn-hero-in { padding: 22px 0 30px; }
  .tsn-eyebrow { font-size: 14px; } .tsn-h1 { font-size: 34px; } .tsn-hero-s { font-size: 16.5px; }
  .tsn-checks li { font-size: 16px; padding-left: 36px; } .tsn-checks li::before { width: 22px; height: 22px; }
  .tsn-btns { flex-direction: column; gap: 10px; } .tsn-btn-r, .tsn-btn-o { width: 100%; height: 52px; font-size: 18px; }
  .tsn-h2 { font-size: 26px; } .tsn-up { font-size: 24px; } .tsn-sub { font-size: 15px; }
  .tsn-devs { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin-top: 20px; }
  .tsn-dev { height: 128px; gap: 8px; } .tsn-dev img { height: 48px; max-width: 90px; } .tsn-dev span { font-size: 15px; gap: 6px; text-align: center; } .tsn-dev span .tsn-ic { display: none; }
  .tsn-ptabs { display: flex; overflow-x: auto; } .tsn-ptab { flex: 0 0 auto; padding: 0 14px; font-size: 14px; white-space: nowrap; }
  .tsn-prow { grid-template-columns: minmax(0, 1fr) auto; gap: 10px; padding: 8px 14px; font-size: 14.5px; }
  .tsn-prow b { font-size: 15px; } .tsn-phead b { font-size: 14px; }
  .tsn-signs { grid-template-columns: minmax(0, 1fr); }
  .tsn-sg { gap: 16px; padding-left: 4px; min-height: 60px; } .tsn-sg img { width: 36px; height: 36px; flex-basis: 36px; } .tsn-sg span { font-size: 16px; }
  .tsn-procs { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px 10px; }
  .tsn-pc + .tsn-pc::before { display: none; }
  .tsn-pc-top b { width: 36px; height: 36px; font-size: 14px; } .tsn-pc-ic { width: 70px; height: 70px; } .tsn-pc-ic img { width: 40px; height: 40px; }
  .tsn-pc h3 { font-size: 16.5px; } .tsn-pc > div:last-child { font-size: 14px; }
  .tsn-stats { grid-template-columns: minmax(0, 1fr); padding: 20px 0; gap: 18px; }
  .tsn-stats > div + div { border-left: 0; } .tsn-stats b { font-size: 36px; } .tsn-stats span { font-size: 15px; }
  .tsn-testis, .tsn-posts { grid-template-columns: minmax(0, 1fr); }
  .tsn-cta { font-size: 20px; }
  .tsn-ft { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 26px 16px; }
  .tsn-ft-brand, .tsn-ft-ct { grid-column: 1 / -1; }
  .tsn-ft-col { border-left: 0; padding-left: 0; }
  .tsn-ft-logo span { font-size: 22px; }
}

/* mid-fix */
@media (min-width: 850px) and (max-width: 1399px) {
  #header #logo a { width: 240px; font-size: 22px !important; } #header #logo a::before { width: 60px; height: 54px; flex-basis: 60px; }
  #header a.tsn-call { height: 60px; padding: 0 16px !important; } #header a.tsn-call span { font-size: 18px !important; } #header a.tsn-call small { font-size: 14px; }
  .tsn-ft-col { padding-left: 20px; }
}
@media (min-width: 850px) and (max-width: 1199px) {
  #header a.tsn-call span small { display: none; }
  .section.tsn-hero { min-height: 520px; } .tsn-h1 { font-size: 44px; }
  .tsn-hero .section-bg::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(234,243,253,.92) 0, rgba(234,243,253,.7) 45%, rgba(234,243,253,0) 70%); }
  .tsn-devs { gap: 14px; } .tsn-dev span { font-size: 17px; gap: 8px; }
  .tsn-prow { grid-template-columns: 1fr 260px; padding: 0 24px; }
  .tsn-ft { grid-template-columns: 1.4fr 1fr 1fr 1.2fr; }
}
/* /mid-fix */
/* _midwidth: header Flatsome ở 850-1399px (laptop nhỏ/tablet ngang) — menu dựng theo mockup 1440 tràn phải; dùng chung mọi site */
@media (min-width: 850px) and (max-width: 1399px) {
  #header .header-nav-main > li, #header .header-bottom-nav > li { margin-left: 6px !important; margin-right: 6px !important; }
  #header .header-nav-main > li > a, #header .header-bottom-nav > li > a { font-size: 14px !important; }
  #header .header-search-form { max-width: 300px !important; width: 300px !important; margin-left: 20px !important; }
}
@media (min-width: 850px) and (max-width: 1199px) {
  #logo { width: auto !important; max-width: 210px !important; } #logo a { font-size: 21px !important; }
  #header .header-main .flex-right .header-button-1, #header .header-main .flex-right li.html, #header .header-search-form, #top-bar .flex-right { display: none !important; }
  #header .header-nav-main > li, #header .header-bottom-nav > li { margin-left: 3px !important; margin-right: 3px !important; }
  #header .header-nav-main > li > a, #header .header-bottom-nav > li > a { font-size: 13px !important; }
  #header .flex-col { min-width: 0; } #header .header-inner, #header .header-bottom .container { overflow: hidden; }
}
.col-inner a[href^="mailto"], .col-inner a[href^="tel"] { overflow-wrap: anywhere; }