[hidden]{display:none!important}
/* Font: Be Vietnam Pro for headings and text, self-hosted under assets/fonts (SIL OFL, licences beside the files). */
@font-face { font-family: 'Be Vietnam Pro'; font-style: normal; font-weight: 400; font-display: swap; src: url(fonts/be-vietnam-pro-400-vietnamese.woff2) format('woff2'); unicode-range: U+0102-0103, U+0110-0111, U+0128-0129, U+0168-0169, U+01A0-01A1, U+01AF-01B0, U+0300-0301, U+0303-0304, U+0308-0309, U+0323, U+0329, U+1EA0-1EF9, U+20AB; }
@font-face { font-family: 'Be Vietnam Pro'; font-style: normal; font-weight: 400; font-display: swap; src: url(fonts/be-vietnam-pro-400-latin-ext.woff2) format('woff2'); unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF; }
@font-face { font-family: 'Be Vietnam Pro'; font-style: normal; font-weight: 400; font-display: swap; src: url(fonts/be-vietnam-pro-400-latin.woff2) format('woff2'); unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
@font-face { font-family: 'Be Vietnam Pro'; font-style: normal; font-weight: 500; font-display: swap; src: url(fonts/be-vietnam-pro-500-vietnamese.woff2) format('woff2'); unicode-range: U+0102-0103, U+0110-0111, U+0128-0129, U+0168-0169, U+01A0-01A1, U+01AF-01B0, U+0300-0301, U+0303-0304, U+0308-0309, U+0323, U+0329, U+1EA0-1EF9, U+20AB; }
@font-face { font-family: 'Be Vietnam Pro'; font-style: normal; font-weight: 500; font-display: swap; src: url(fonts/be-vietnam-pro-500-latin-ext.woff2) format('woff2'); unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF; }
@font-face { font-family: 'Be Vietnam Pro'; font-style: normal; font-weight: 500; font-display: swap; src: url(fonts/be-vietnam-pro-500-latin.woff2) format('woff2'); unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
@font-face { font-family: 'Be Vietnam Pro'; font-style: normal; font-weight: 600; font-display: swap; src: url(fonts/be-vietnam-pro-600-vietnamese.woff2) format('woff2'); unicode-range: U+0102-0103, U+0110-0111, U+0128-0129, U+0168-0169, U+01A0-01A1, U+01AF-01B0, U+0300-0301, U+0303-0304, U+0308-0309, U+0323, U+0329, U+1EA0-1EF9, U+20AB; }
@font-face { font-family: 'Be Vietnam Pro'; font-style: normal; font-weight: 600; font-display: swap; src: url(fonts/be-vietnam-pro-600-latin-ext.woff2) format('woff2'); unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF; }
@font-face { font-family: 'Be Vietnam Pro'; font-style: normal; font-weight: 600; font-display: swap; src: url(fonts/be-vietnam-pro-600-latin.woff2) format('woff2'); unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
@font-face { font-family: 'Be Vietnam Pro'; font-style: normal; font-weight: 700; font-display: swap; src: url(fonts/be-vietnam-pro-700-vietnamese.woff2) format('woff2'); unicode-range: U+0102-0103, U+0110-0111, U+0128-0129, U+0168-0169, U+01A0-01A1, U+01AF-01B0, U+0300-0301, U+0303-0304, U+0308-0309, U+0323, U+0329, U+1EA0-1EF9, U+20AB; }
@font-face { font-family: 'Be Vietnam Pro'; font-style: normal; font-weight: 700; font-display: swap; src: url(fonts/be-vietnam-pro-700-latin-ext.woff2) format('woff2'); unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF; }
@font-face { font-family: 'Be Vietnam Pro'; font-style: normal; font-weight: 700; font-display: swap; src: url(fonts/be-vietnam-pro-700-latin.woff2) format('woff2'); unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }

/* Metric-matched fallback while Be Vietnam Pro loads, so text does not reflow when it arrives. */
@font-face { font-family: 'Be Vietnam Pro Fallback'; font-weight: 100 500; src: local('Arial'), local('Helvetica'), local('Liberation Sans'); size-adjust: 106.5%; ascent-override: 94%; descent-override: 25%; line-gap-override: 0%; }
@font-face { font-family: 'Be Vietnam Pro Fallback'; font-weight: 600; src: local('Arial Bold'), local('Arial'), local('Liberation Sans Bold'), local('Liberation Sans'); size-adjust: 102%; ascent-override: 98%; descent-override: 26.5%; line-gap-override: 0%; }
@font-face { font-family: 'Be Vietnam Pro Fallback'; font-weight: 700 900; src: local('Arial Bold'), local('Arial'), local('Liberation Sans Bold'), local('Liberation Sans'); size-adjust: 103.3%; ascent-override: 97%; descent-override: 26%; line-gap-override: 0%; }

/* JIMMY LENS — "optical showroom": optical white, hairlines, every packaging front on a flat grey plate.
   The boxes are the only strong colour on a page; the teal and blue of the packaging stay small accents.
   Single light look by brand choice: every colour is set explicitly.
   Old token names stay as aliases because the pages (inline chips) and the PD tool (pd.css) read them. */
:root {
  /* colour */
  --navy: #10284a;
  --ink: #23344d;
  --ink-2: #40526b;
  --muted: #5a6a7f;
  --surface: #ffffff;
  --surface-2: #f5f7fa;
  --plate: #f1f4f7;
  --line: #d9e2ea;
  --line-2: #e7edf2;
  --line-strong: #10284a;
  --brand-teal: #11a3b7;
  --brand-teal-ink: #0a7888;
  --brand-blue: #2f56a6;
  --brand-blue-ink: #264a93;
  --tint-aqua: #eaf7f9;
  --tint-aqua-line: #d3eff3;
  --tint-sky: #edf2fb;
  --band: linear-gradient(90deg, #12a9bd, #2f56a6 60%, #10284a);
  --grad-data: linear-gradient(90deg, #0a7d8f, #2a4f9e);
  --footer-bg: #f3f6f9;
  --ok: #17685f;
  --ok-tint: #eef6f4;
  --warn: #b3261e;
  --warn-tint: #f8f5f4;
  --focus: #2f56a6;
  --silver: #9fb0c1;
  /* aliases of the previous names */
  --teal: var(--brand-teal);
  --teal-ink: var(--brand-teal-ink);
  --blue: var(--brand-blue);
  --blue-ink: var(--brand-blue-ink);
  --aqua: var(--tint-aqua);
  --aqua-2: var(--tint-aqua-line);
  --sky: var(--tint-sky);
  --mist: var(--surface-2);
  --paper: var(--surface);
  --bg: var(--surface);
  --bg-2: var(--surface-2);
  --accent: var(--brand-blue-ink);
  --footer: var(--footer-bg);
  --grad: var(--grad-data);
  /* type */
  --font: "Be Vietnam Pro", "Be Vietnam Pro Fallback", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  --display: var(--font);
  --fs-display: clamp(36px, 4.6vw, 64px);
  --fs-h1: clamp(30px, 3.6vw, 48px);
  --fs-h2: clamp(24px, 2.6vw, 36px);
  --fs-h3: 20px;
  --fs-h3-lg: 22px;
  --fs-title: 16px;
  --fs-lead: clamp(17px, 1.3vw, 19px);
  --fs-body: 16px;
  --fs-sm: 14px;
  --fs-xs: 13px;
  --fs-label: 12px;
  /* space */
  --s-1: 4px; --s-2: 8px; --s-3: 12px; --s-4: 16px; --s-5: 24px; --s-6: 32px; --s-7: 48px; --s-8: 64px; --s-9: 96px;
  --section-y: clamp(64px, 7vw, 104px);
  --section-y-tight: clamp(48px, 5vw, 72px);
  --gap-grid: 20px;
  --head-gap: clamp(28px, 3.5vw, 44px);
  --wrap: 1280px;
  --gutter: clamp(16px, 4vw, 48px);
  /* shape */
  --r-sm: 8px;
  --r-md: 12px;
  --r-lg: 20px;
  --r-pill: 999px;
  --r: var(--r-md);
  --sh-1: 0 1px 2px rgba(16, 40, 74, 0.06);
  --sh-2: 0 16px 32px -22px rgba(16, 40, 74, 0.38);
  --sh-pack: 0 14px 24px -16px rgba(16, 40, 74, 0.5);
  --sh-media: 0 32px 64px -40px rgba(6, 11, 20, 0.6);
  --hair: 1px solid var(--line);
  --hair-2: 1px solid var(--line-2);
  --hair-strong: 1px solid var(--line-strong);
  --band-h: 3px;
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
  --hdr-h: 110px;
  color-scheme: light;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { transition: none !important; animation: none !important; } }
body { margin: 0; background: var(--surface); color: var(--ink); font-family: var(--font); font-size: var(--fs-body); line-height: 1.65; -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }
img { max-width: 100%; height: auto; display: block; }
/* Responsive images: the <picture> wrapper adds no box, so layout rules address the <img> as before. */
picture { display: contents; }
/* With the wrapper gone, <source> would otherwise count as an empty grid or flex item. */
picture > source { display: none; }
a { color: var(--brand-blue-ink); }
a:hover { color: var(--brand-teal-ink); }
b, strong { font-weight: 600; }
h1, h2, h3 { margin: 0; color: var(--navy); font-family: var(--font); font-weight: 700; letter-spacing: -0.02em; font-variant-numeric: lining-nums; text-wrap: balance; }
h1 { font-size: var(--fs-h1); line-height: 1.12; letter-spacing: -0.025em; }
h2 { font-size: var(--fs-h2); line-height: 1.18; }
h3 { font-size: var(--fs-h3); line-height: 1.3; font-weight: 600; letter-spacing: -0.01em; }
h1 em, h2 em, h3 em { font-style: normal; font-weight: inherit; color: var(--brand-teal-ink); }
p { margin: 0; text-wrap: pretty; }
p a { text-underline-offset: 3px; }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--navy); color: #fff; padding: 8px 12px; z-index: 100; border-radius: var(--r-sm); }
.skip:focus { left: 8px; }
.wrap { max-width: var(--wrap); margin: 0 auto; padding-inline: var(--gutter); }
.section { padding-block: var(--section-y); }
.section.alt { background: var(--surface-2); }
.section.band { background: var(--surface-2); }
.eyebrow { display: inline-flex; align-items: center; gap: 12px; color: var(--brand-teal-ink); font-size: var(--fs-label); font-weight: 600; letter-spacing: 0.14em; line-height: 1.3; text-transform: uppercase; }
.eyebrow::before { content: ""; flex: none; width: 24px; height: 1px; background: currentColor; opacity: 0.6; }
.lead { max-width: 62ch; color: var(--ink-2); font-size: var(--fs-lead); font-weight: 400; line-height: 1.6; }
.muted { color: var(--muted); }
.small { font-size: var(--fs-sm); }
.head { display: flex; justify-content: space-between; align-items: flex-end; gap: 16px 40px; flex-wrap: wrap; margin-bottom: var(--head-gap); }
.head > div { display: flex; flex-direction: column; gap: 12px; min-width: 0; }
.head h2 { max-width: 20em; }
.more { display: inline-block; padding-block: 10px; color: var(--brand-blue-ink); font-size: 15px; font-weight: 600; text-decoration: underline; text-decoration-color: currentColor; text-decoration-thickness: 1px; text-underline-offset: 4px; }
.more:hover { color: var(--brand-teal-ink); }
.split { display: grid; grid-template-columns: minmax(0, 360px) minmax(0, 1fr); gap: clamp(32px, 5vw, 64px); }
.split > div:first-child { display: flex; flex-direction: column; gap: 12px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--s-5); }
.grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--gap-grid); }
.grid-4 { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: var(--gap-grid); }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.ico { width: 26px; height: 26px; flex: none; color: var(--brand-teal-ink); }

/* Buttons: one solid navy action per block; the second action is white with a hairline */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 48px; padding: 0 24px; border: 1px solid transparent; border-radius: var(--r-pill); background: var(--navy); color: #fff; font-family: var(--font); font-size: 15px; font-weight: 600; line-height: 1.2; text-decoration: none; cursor: pointer; transition: transform 0.2s var(--ease), background-color 0.2s, border-color 0.2s; }
.btn:hover { color: #fff; background: var(--brand-blue); transform: translateY(-1px); }
.btn:active { transform: none; }
.btn:focus-visible { outline-offset: 3px; }
.btn.ghost { background: #fff; color: var(--navy); border-color: var(--line); }
.btn.ghost:hover { background: #fff; border-color: var(--navy); color: var(--navy); }
.btn.sm { min-height: 44px; padding: 0 18px; font-size: 14px; }
.btn.block { width: 100%; }
.btn:disabled { opacity: 0.45; cursor: not-allowed; transform: none; }
.linkbtn { display: inline-flex; align-items: center; min-height: 44px; background: none; border: 0; padding: 0 4px; color: var(--brand-blue-ink); font: inherit; font-size: var(--fs-sm); cursor: pointer; text-decoration: underline; text-underline-offset: 3px; }

/* Header: the packaging band (3 px), a quiet strip, then logo and menu */
.site-header { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 50; background: #fff; border-bottom: var(--hair-2); }
.site-header::before { content: ""; display: block; height: var(--band-h); background: var(--band); }
.topbar { background: var(--surface-2); color: var(--muted); font-size: var(--fs-xs); }
.topbar .wrap { display: flex; justify-content: space-between; align-items: center; min-height: 34px; gap: 16px; }
.topbar a { display: inline-block; padding-block: 7px; color: var(--navy); font-weight: 600; text-decoration: none; }
.topbar a:hover { color: var(--brand-teal-ink); }
.topbar .links { display: flex; align-items: center; gap: 20px; }
.hdr { display: flex; align-items: center; gap: 32px; min-height: 72px; }
.logo { flex: none; display: inline-flex; padding-block: 2px; }
.logo img { height: 40px; width: auto; }
.nav { display: flex; justify-content: flex-end; gap: 28px; flex: 1; }
.nav a { position: relative; padding-block: 10px; color: var(--ink); font-size: 15px; font-weight: 500; text-decoration: none; white-space: nowrap; }
.nav a::after { content: ""; position: absolute; left: 0; right: 0; bottom: 2px; height: 2px; background: var(--brand-teal); transform: scaleX(0); transform-origin: left; transition: transform 0.25s var(--ease); }
.nav a:hover { color: var(--navy); }
.nav a:hover::after, .nav a[aria-current="page"]::after { transform: scaleX(1); }
.nav a[aria-current="page"] { color: var(--navy); font-weight: 600; }
.hdr-actions { display: flex; gap: 10px; align-items: center; }
.menu-btn { display: none; width: 44px; height: 44px; align-items: center; justify-content: center; border: var(--hair); border-radius: var(--r-sm); background: #fff; color: var(--navy); cursor: pointer; }

/* Footer: light and flat, the band on top; the contact column is the one place with phone and Zalo */
.site-footer { position: relative; background: var(--footer-bg); color: var(--muted); padding-block: 64px 32px; }
.site-footer::before { content: ""; position: absolute; left: 0; right: 0; top: 0; height: var(--band-h); background: var(--band); }
.site-footer a { color: var(--ink-2); text-decoration: underline; text-decoration-color: var(--line); text-decoration-thickness: 1px; text-underline-offset: 4px; }
.site-footer a:hover { color: var(--brand-teal-ink); text-decoration-color: currentColor; }
.foot-grid { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1.2fr); gap: clamp(24px, 4vw, 48px); align-items: start; }
.foot-grid > div { display: flex; flex-direction: column; gap: 2px; font-size: var(--fs-sm); line-height: 1.55; min-width: 0; }
.foot-grid > div > a { display: inline-flex; align-items: center; align-self: flex-start; min-height: 32px; }
.foot-grid p { max-width: 30em; }
.foot-title { color: var(--brand-teal-ink); font-size: var(--fs-label); font-weight: 600; letter-spacing: 0.14em; margin-bottom: 6px; }
.foot-grid .foot-logo { min-height: 44px; margin-bottom: 6px; }
.foot-logo img { height: 40px; width: auto; }
#lien-he-cuoi-trang { gap: 4px; padding: 20px 24px; background: #fff; border: var(--hair); border-radius: var(--r-md); scroll-margin-top: calc(var(--hdr-h) + 24px); }
#lien-he-cuoi-trang a[href^="tel:"], #lien-he-cuoi-trang a[href*="zalo.me"] { min-height: 44px; color: var(--navy); font-size: 16px; font-weight: 600; font-variant-numeric: tabular-nums; }
#lien-he-cuoi-trang:target { outline: 2px solid var(--brand-teal); outline-offset: 4px; }
.foot-legal { display: flex; justify-content: space-between; gap: 12px 16px; flex-wrap: wrap; padding-top: 22px; margin-top: 40px; border-top: var(--hair); font-size: var(--fs-label); letter-spacing: 0.02em; color: var(--muted); }
.foot-legal a { color: var(--ink-2); text-decoration: underline; text-decoration-color: currentColor; text-underline-offset: 3px; }

/* Breadcrumb + page head */
.crumbs { display: flex; flex-wrap: wrap; gap: 4px 8px; padding-top: 24px; color: var(--muted); font-size: var(--fs-xs); }
.crumbs a { display: inline-block; padding-block: 10px; margin-block: -10px; color: var(--muted); text-decoration: none; }
.crumbs a:hover { color: var(--brand-teal-ink); text-decoration: underline; }
.page-head { display: flex; flex-direction: column; gap: 16px; padding-block: 16px 40px; }
.page-head + .section, .page-head ~ .section:first-of-type { padding-top: var(--section-y-tight); }

/* Heroes of inner pages (Công nghệ, Liên hệ, Đại lý) */
.hero { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(32px, 5vw, 64px); align-items: start; padding-block: clamp(32px, 5vw, 72px); }
.hero-copy { display: flex; flex-direction: column; gap: 20px; min-width: 0; }
.hero-toc { grid-template-columns: minmax(0, 1fr) minmax(0, 360px); align-items: start; padding-block: 16px 56px; }
.hero > img, .hero .grid-2 img { width: auto; max-width: min(100%, 300px); justify-self: center; background: #fff; box-shadow: var(--sh-pack); }

/* Figures in a row between hairlines */
.proof { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-top: var(--hair); }
.proof > div { display: flex; flex-direction: column; gap: 6px; padding: 24px 24px 26px 0; }
.proof > div + div { padding-left: 24px; border-left: var(--hair-2); }
.proof b { color: var(--navy); font-size: clamp(30px, 3vw, 42px); font-weight: 700; letter-spacing: -0.02em; line-height: 1; white-space: nowrap; font-variant-numeric: tabular-nums lining-nums; }
.proof span { max-width: 18em; color: var(--muted); font-size: var(--fs-sm); line-height: 1.55; }

/* Product cards: the box on a flat plate at no more than its own size, the index chip in a strip above it */
.cards { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: var(--gap-grid); }
/* Related lines (not the filtered catalogue): rows centre so a short last row never looks broken. */
.cards:not(#catalog) { display: flex; flex-wrap: wrap; justify-content: center; }
.cards:not(#catalog) > .card { flex: 0 0 calc((100% - 3 * var(--gap-grid)) / 4); }
.card { display: flex; flex-direction: column; min-width: 0; background: #fff; border: var(--hair); border-radius: var(--r-md); overflow: hidden; transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease); }
.card[hidden] { display: none !important; }
.card:hover { transform: translateY(-2px); box-shadow: var(--sh-2); }
.card > a { display: flex; flex-direction: column; flex: 1; color: inherit; text-decoration: none; }
.card .pic { position: relative; display: flex; align-items: center; justify-content: center; aspect-ratio: 1 / 1; min-height: 0; padding: 40px 20px 20px; background: var(--plate); border-bottom: var(--hair-2); }
.card .pic img { width: auto; height: auto; max-width: min(74%, 240px); max-height: 100%; background: #fff; box-shadow: var(--sh-pack); transition: transform 0.3s var(--ease); }
.card:hover .pic img { transform: translateY(-4px); }
.card .pic .noimg { width: auto; height: 100%; max-width: 74%; }
.card .chip { position: absolute; top: 12px; left: 12px; padding: 2px 10px; border-radius: var(--r-pill); color: #fff; font-size: var(--fs-label); font-weight: 600; line-height: 1.5; letter-spacing: 0.02em; font-variant-numeric: tabular-nums; }
.noimg { width: 72%; aspect-ratio: 1; display: flex; flex-direction: column; justify-content: space-between; padding: 14px; background: #fff; border: 1px dashed var(--line); border-radius: var(--r-sm); color: var(--muted); font-size: var(--fs-label); }
.noimg b { font-size: 11px; letter-spacing: 0.12em; }
.card .body { display: flex; flex-direction: column; gap: 6px; padding: 16px 18px 18px; }
.card h3 { min-height: 2.64em; font-size: var(--fs-title); font-weight: 600; line-height: 1.32; letter-spacing: -0.005em; }
.bar { width: 24px; height: 2px; border-radius: 2px; }
.card .tags { color: var(--muted); font-size: var(--fs-xs); }
.card .desc { display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; color: var(--ink-2); font-size: var(--fs-sm); line-height: 1.5; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chips span { display: inline-flex; align-items: center; gap: 5px; padding: 3px 8px 3px 6px; border-radius: var(--r-pill); background: var(--tint-sky); color: var(--brand-blue-ink); font-size: var(--fs-label); font-weight: 500; line-height: 1.4; }
.chips .ico { width: 15px; height: 15px; color: var(--brand-blue-ink); }

/* Lists of rules and key / value pairs */
.rules { display: flex; flex-direction: column; gap: 10px; padding-top: 20px; border-top: var(--hair-strong); }
.kv { display: flex; flex-direction: column; border-top: var(--hair); }
.kv > div { display: grid; grid-template-columns: 200px minmax(0, 1fr); gap: 20px; padding: 14px 0; border-bottom: var(--hair-2); font-size: 15px; }
.kv > div > span:first-child { color: var(--muted); font-size: var(--fs-label); font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase; line-height: 1.9; }
.kv b { color: var(--navy); font-weight: 600; }

/* FAQ: hairlines, an aqua disc for the toggle */
.faq { border-top: var(--hair-strong); }
.faq details { border-bottom: var(--hair); }
.faq summary { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; gap: 20px; min-height: 60px; padding-block: 16px; color: var(--navy); font-size: 17px; font-weight: 600; line-height: 1.4; cursor: pointer; list-style: none; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; display: grid; place-items: center; width: 32px; height: 32px; border-radius: 50%; background: var(--tint-aqua); color: var(--brand-teal-ink); font-size: 18px; font-weight: 600; transition: transform 0.3s var(--ease); }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { max-width: 70ch; padding-bottom: 22px; color: var(--ink-2); }

/* Catalogue */
.cat-grid { display: grid; grid-template-columns: 250px minmax(0, 1fr); gap: 40px; padding-bottom: 120px; }
/* The filter column scrolls on its own when it is taller than the screen, so every group stays reachable. */
.filters { display: flex; flex-direction: column; gap: 20px; align-self: start; position: sticky; top: calc(var(--hdr-h) + 20px); max-height: calc(100vh - var(--hdr-h) - 40px); overflow-y: auto; overscroll-behavior: contain; padding-right: 6px; scrollbar-width: thin; }
.filters fieldset { display: flex; flex-direction: column; gap: 2px; margin: 0; padding: 14px 0 0; border: 0; border-top: var(--hair); }
.filters legend { padding: 0 0 6px; color: var(--brand-teal-ink); font-size: var(--fs-label); font-weight: 600; letter-spacing: 0.14em; }
.filters label { display: flex; align-items: center; gap: 10px; min-height: 36px; font-size: 15px; cursor: pointer; }
.filters label span.n { margin-left: auto; color: var(--muted); font-size: var(--fs-xs); font-variant-numeric: tabular-nums; }
.filters input { width: 18px; height: 18px; margin: 0; accent-color: var(--brand-teal-ink); }
.filters .panel { background: var(--tint-aqua) !important; border-color: var(--tint-aqua-line); }
.search { display: flex; align-items: center; gap: 10px; width: min(420px, 100%); min-height: 48px; padding: 0 18px; background: #fff; border: var(--hair); border-radius: var(--r-pill); color: var(--muted); }
.search:focus-within { border-color: var(--focus); box-shadow: 0 0 0 2px var(--focus); }
.search input { flex: 1; min-width: 0; border: 0; outline: 0; background: transparent; color: var(--navy); font: inherit; font-size: 16px; }
.toolbar { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; margin-bottom: 18px; color: var(--muted); font-size: var(--fs-sm); }
.empty { padding: 40px; text-align: center; border: 1px dashed var(--line); border-radius: var(--r-md); color: var(--muted); }
.filter-toggle { display: none; }

/* Product page: the packaging front on a flat plate at its own size (the image itself untouched) */
.buy { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); gap: clamp(32px, 5vw, 72px); padding-block: 24px clamp(56px, 7vw, 88px); }
.gallery { position: relative; overflow: hidden; display: flex; align-items: center; justify-content: center; aspect-ratio: 1 / 0.92; max-width: 100%; border-radius: var(--r-lg); background: var(--plate); border: var(--hair-2); }
.gallery::after { content: ""; position: absolute; left: 26%; right: 26%; bottom: 10%; height: 22px; background: radial-gradient(closest-side, rgba(16, 40, 74, 0.22), rgba(16, 40, 74, 0)); }
.gallery img { position: relative; z-index: 1; width: auto; height: auto; max-width: min(62%, 360px); background: #fff; box-shadow: var(--sh-pack); }
.gallery .noimg { position: relative; z-index: 1; width: min(48%, 260px); font-size: var(--fs-sm); }
.buy-info { display: flex; flex-direction: column; gap: 20px; min-width: 0; }
.buy-info .lead { font-size: 18px; }
.specs { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1px; background: var(--line); border: var(--hair); border-radius: var(--r-md); overflow: hidden; }
.specs > div { display: flex; flex-direction: column; gap: 4px; min-width: 0; padding: 13px 16px; background: #fff; }
.specs .k { color: var(--muted); font-size: var(--fs-label); font-weight: 600; letter-spacing: 0.12em; }
.specs .v { color: var(--navy); font-size: 17px; font-weight: 600; line-height: 1.2; font-variant-numeric: tabular-nums lining-nums; }
.rsum { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; padding-top: 10px; }
.rsum > div { padding: 10px 14px; background: var(--tint-aqua); border-radius: var(--r-sm); }
.rsum span { display: block; color: var(--ink-2); font-size: var(--fs-xs); }
.rsum b { color: var(--navy); font-size: 17px; font-weight: 600; white-space: nowrap; font-variant-numeric: tabular-nums lining-nums; }
.rsum .is-na b { color: var(--muted); font-weight: 400; }
.subnav { position: sticky; top: var(--hdr-h); z-index: 40; background: #fff; border-block: var(--hair-2); }
.subnav .wrap { display: flex; gap: 26px; min-height: 52px; align-items: stretch; overflow-x: auto; }
.subnav a { display: inline-flex; align-items: center; padding-block: 4px; border-bottom: 2px solid transparent; color: var(--ink-2); font-size: 15px; font-weight: 500; text-decoration: none; white-space: nowrap; }
.subnav a:hover { color: var(--navy); border-bottom-color: var(--brand-teal); }
.rtable { overflow-x: auto; background: #fff; border: var(--hair); border-radius: var(--r-md); }
.rtable table { width: 100%; min-width: 480px; border-collapse: collapse; table-layout: fixed; }
.rtable th { padding: 12px 16px; background: var(--surface-2); color: var(--muted); font-size: var(--fs-label); font-weight: 600; letter-spacing: 0.12em; text-align: left; }
.rtable th:nth-child(1), .rtable th:nth-child(2) { width: 40%; }
.rtable th:nth-child(3) { width: 20%; }
.rtable td { padding: 13px 16px; border-top: var(--hair-2); font-size: 15px; font-variant-numeric: tabular-nums; }
.rtable td:first-child { color: var(--navy); font-weight: 600; }
.pending { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; padding: 18px 20px; background: var(--surface-2); border: 1px dashed var(--line); border-radius: var(--r-md); font-size: 15px; }
.rpending { margin-top: 10px; color: var(--muted); font-size: var(--fs-sm); }
.feat { display: flex; flex-direction: column; gap: 10px; padding-top: 20px; border-top: var(--hair); }
.feat p { color: var(--ink-2); }
.feat h3 { display: flex; align-items: center; gap: 12px; }
.feat h3 .ico { width: 40px; height: 40px; padding: 9px; border-radius: 50%; background: var(--tint-aqua); color: var(--brand-blue-ink); }

/* Ranges page */
.idx-tabs { position: sticky; top: var(--hdr-h); z-index: 40; background: #fff; border-bottom: var(--hair-2); }
.idx-tabs .wrap { display: flex; gap: 8px; min-height: 64px; align-items: center; overflow-x: auto; }
.idx-tabs a { flex-shrink: 0; display: inline-flex; align-items: center; min-height: 44px; padding: 0 18px; border: var(--hair); border-radius: var(--r-pill); color: var(--navy); font-size: var(--fs-sm); font-weight: 500; text-decoration: none; }
.idx-tabs a:hover { border-color: var(--navy); }
.rgroup { padding-block: 48px 8px; scroll-margin-top: calc(var(--hdr-h) + 76px); }
.rgroup > h2 { display: flex; gap: 16px; align-items: baseline; padding-bottom: 16px; border-bottom: 2px solid var(--navy); }
.rgroup > h2 small { color: var(--muted); font-size: 15px; font-weight: 400; letter-spacing: 0; }
.rrow { display: grid; grid-template-columns: minmax(0, 330px) minmax(0, 1fr); gap: 24px; align-items: start; padding-block: 20px; border-bottom: var(--hair-2); }
.rname { display: flex; gap: 16px; align-items: flex-start; min-width: 0; color: inherit; text-decoration: none; }
.rname img { width: auto; max-width: 72px; flex-shrink: 0; background: #fff; box-shadow: var(--sh-pack); }
.rname .noimg { width: 72px; flex-shrink: 0; aspect-ratio: 1; padding: 8px; font-size: 10px; }
.rname .noimg b { display: block; color: var(--muted); font-size: 9px; font-weight: 600; letter-spacing: 0.1em; line-height: 1.3; }
.rname .noimg span { font-size: 10px; line-height: 1.3; }
.rname b { display: block; color: var(--navy); font-size: var(--fs-title); font-weight: 600; line-height: 1.3; }
.rname span { color: var(--muted); font-size: var(--fs-xs); }
.rname:hover b { color: var(--brand-teal-ink); }
.rrow .rtable table { min-width: 0; }

/* Technology page */
.toc { display: flex; flex-direction: column; border-top: var(--hair-strong); }
.toc a { display: flex; gap: 14px; align-items: center; min-height: 46px; border-bottom: var(--hair-2); color: var(--ink); font-size: 15px; text-decoration: none; }
.toc a:hover { color: var(--brand-teal-ink); }
.toc a span { width: 26px; color: var(--brand-teal-ink); font-size: var(--fs-sm); font-weight: 600; }
.panel { display: flex; flex-direction: column; gap: 14px; min-width: 0; padding: 24px; background: #fff; border: var(--hair); border-radius: var(--r-md); }
.alt .panel { background: #fff; }
.swatches { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.swatches span { width: 48px; height: 48px; border-radius: 50%; }
.note { display: flex; gap: 16px; padding: 18px 22px; background: var(--tint-sky); border-radius: var(--r-md); color: var(--ink-2); font-size: var(--fs-sm); }
.note b { flex-shrink: 0; padding-top: 2px; color: var(--brand-blue-ink); font-size: var(--fs-label); letter-spacing: 0.12em; }
.thick { gap: 4px; background: var(--surface-2); }
.thick-t { margin-bottom: 10px; color: var(--brand-teal-ink); font-size: var(--fs-label); font-weight: 600; letter-spacing: 0.14em; }
.thick-row { display: grid; grid-template-columns: 56px minmax(0, 1fr) 172px; gap: 14px; align-items: center; min-height: 38px; }
.thick-row b { color: var(--navy); font-size: 19px; font-weight: 600; line-height: 1; font-variant-numeric: tabular-nums lining-nums; }
.thick-row > span:last-child { color: var(--ink-2); font-size: var(--fs-xs); line-height: 1.4; font-variant-numeric: tabular-nums; }
.thick-bar { height: 10px; border-radius: 5px; background: linear-gradient(90deg, #cfdae4, #b3c3d2); }
.thick-row.hi .thick-bar { background: var(--grad-data); }
.thick p { margin-top: 10px; }
.ix-rows { border-top: var(--hair-strong); }
.ix-rows a { display: grid; grid-template-columns: 72px 72px minmax(0, 1fr) 20px; gap: 16px; align-items: baseline; padding: 14px 4px; border-bottom: var(--hair-2); color: var(--ink-2); font-size: var(--fs-sm); text-decoration: none; transition: background 0.2s; }
.ix-rows a:hover { background: var(--surface-2); }
.ix-rows b { color: var(--navy); font-size: 22px; font-weight: 700; line-height: 1; font-variant-numeric: tabular-nums lining-nums; }
.ix-rows .n { color: var(--brand-teal-ink); font-size: var(--fs-xs); font-weight: 600; }
.ix-rows .go { color: var(--brand-teal-ink); }
.symbols { display: flex; flex-direction: column; border-top: var(--hair-strong); }
.symbols > div { display: grid; grid-template-columns: 240px minmax(0, 1fr); gap: 20px; padding-block: 13px; border-bottom: var(--hair-2); font-size: 15px; }
.symbols b { color: var(--navy); font-weight: 600; }
.sources { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 4px 32px; }
.sources a { display: flex; justify-content: space-between; align-items: center; gap: 12px; min-height: 44px; border-bottom: var(--hair-2); font-size: var(--fs-sm); text-decoration: none; }
.sources a span { color: var(--muted); font-size: var(--fs-label); white-space: nowrap; }

/* Steps */
.steps { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: var(--s-5); }
.step { display: flex; flex-direction: column; gap: 12px; padding-top: 20px; border-top: var(--hair); }
.step .n { display: flex; align-items: center; justify-content: center; width: 44px; height: 44px; border-radius: 50%; background: var(--navy); color: #fff; font-size: 17px; font-weight: 600; font-variant-numeric: tabular-nums lining-nums; }

/* Principle drawings are labelled as such */
.tag-illus { flex: none; display: inline-flex; align-items: center; padding: 5px 10px; border: 1px solid var(--tint-aqua-line); border-radius: var(--r-pill); background: var(--tint-aqua); color: var(--brand-teal-ink); font-size: 11px; font-weight: 600; letter-spacing: 0.14em; line-height: 1.3; text-transform: uppercase; }

/* Warranty: what is and is not covered */
.warrant { border-color: var(--line); }
.warrant > b { font-size: var(--fs-label); letter-spacing: 0.12em; }
.warrant.ok { background: var(--ok-tint); }
.warrant.ok > b { color: var(--ok); }
.warrant.no { background: var(--warn-tint); }
.warrant.no > b { color: var(--warn); }

/* Packaging strip: a few boxes standing side by side (dealer page, 404) */
.pack-strip { display: flex; gap: 12px; align-items: flex-end; justify-content: flex-start; flex-wrap: nowrap; }
.pack-strip a, .pack-strip > img { flex: 0 1 23%; min-width: 0; }
.pack-strip img { width: 100%; height: auto; background: #fff; box-shadow: var(--sh-pack); }
.pack-strip a { display: block; transition: transform 0.25s var(--ease); }
.pack-strip a:hover { transform: translateY(-3px); }

/* Dealer page hero: copy left; the boxes, then the facts, right. 404 keeps a reading width. */
.dealer-hero { padding-block: clamp(48px, 6vw, 96px); }
.dealer-hero .grid-2 { gap: clamp(32px, 5vw, 80px); align-items: center; }
.dealer-side { display: flex; flex-direction: column; gap: 28px; min-width: 0; }
.page-404 { max-width: 760px; }
.page-404 .pack-strip { margin-top: 32px; max-width: 640px; }

/* Closing block of long pages: one step forward */
.next-step { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); gap: 24px 48px; align-items: end; }
.next-step > div:first-child { display: flex; flex-direction: column; gap: 12px; }
.next-step .cta { margin-top: 0; justify-content: flex-end; }
/* A line without a photo yet: the brand mark on the plate, quieter than a box */
.pending-pic { position: relative; z-index: 1; display: flex; flex-direction: column; align-items: center; gap: 10px; padding: 28px 32px; background: #fff; border: var(--hair); border-radius: var(--r-md); color: var(--muted); font-size: var(--fs-sm); text-align: center; }
.pending-pic img, .qv-pic .pending-pic img, .qv-pic .pending-mark img { width: 143px; height: auto; box-shadow: none; }
.pending-pic b { color: var(--navy); font-size: var(--fs-label); letter-spacing: 0.12em; text-transform: uppercase; }

/* Lines without a photo yet, in cards, shelves and the ranges list: the brand mark, not a dashed box */
.noimg.pending-mark { justify-content: center; align-items: center; gap: 10px; padding: 12px; border: var(--hair); text-align: center; }
.noimg.pending-mark img { width: 78%; max-width: 143px; height: auto; background: none !important; box-shadow: none !important; }
.noimg.pending-mark b { color: var(--muted); font-size: 10px; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; line-height: 1.3; }
.rname .noimg.pending-mark { padding: 6px; gap: 4px; }
.rname .noimg.pending-mark b { font-size: 8px; }
.page-guide .pack-strip { margin-top: 12px; max-width: 560px; }

/* Quick view dialog (built by site.js) */
.qv { width: min(900px, calc(100vw - 32px)); max-height: calc(100vh - 32px); padding: 0; border: 0; border-radius: var(--r-lg); background: #fff; color: var(--ink); box-shadow: 0 40px 80px -30px rgba(16, 40, 74, 0.55); }
.qv::backdrop { background: rgba(16, 40, 74, 0.45); }
.qv-inner { position: relative; display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr); max-height: calc(100vh - 32px); }
.qv-pic { display: flex; align-items: center; justify-content: center; min-height: 300px; padding: 36px; background: var(--plate); }
.qv-pic img { width: auto; max-width: min(80%, 320px); background: #fff; box-shadow: var(--sh-pack); }
.qv-pic .noimg { width: 70%; }
.qv-info { display: flex; flex-direction: column; gap: 16px; min-width: 0; padding: 30px 28px 26px; overflow: auto; }
.qv-info h2 { padding-right: 44px; font-size: clamp(26px, 3vw, 34px); }
.qv-info .specs .v { font-size: 18px; }
.qv-info .rtable table { min-width: 0; }
.qv-info .rtable td, .qv-info .rtable th { padding: 10px 12px; font-size: var(--fs-sm); }
.qv-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 16px; }
.qv-close { position: absolute; top: 12px; right: 12px; z-index: 2; display: flex; align-items: center; justify-content: center; width: 44px; height: 44px; border: var(--hair); border-radius: 50%; background: #fff; color: var(--navy); font-size: 24px; line-height: 1; cursor: pointer; }
.qv-loading { color: var(--muted); }

/* Motion: blocks below the fold start a few pixels low and settle as they come into view.
   Transform only: content is visible at rest and packaging photos are never faded or filtered. */
.reveal.pre { transform: translateY(16px); }
.reveal.pre.in { transform: none; transition: transform 0.8s var(--ease) calc(var(--rv, 0) * 60ms); }

/* ---------- Home page ---------- */
.home-hero { position: relative; overflow: hidden; background: #fff; border-bottom: var(--hair-2); }
.hero-ac { position: relative; display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr); gap: clamp(28px, 4vw, 64px); align-items: center; padding-block: clamp(40px, 5vw, 72px) 0; }
.home-hero h1 { margin: 20px 0 24px; font-size: var(--fs-display); line-height: 1.06; letter-spacing: -0.03em; }
.home-hero h1 em { display: block; white-space: nowrap; }
.home-hero .lead { max-width: 34em; }
.cta { display: flex; flex-wrap: wrap; align-items: center; gap: 14px 22px; margin-top: 32px; }
.textlink { display: inline-block; padding-block: 10px; color: var(--navy); font-size: 15px; font-weight: 600; text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 4px; }
.textlink:hover { color: var(--brand-teal-ink); }
.lens-fig { position: relative; margin: 0; perspective: 1400px; }
.lens-stage { position: relative; aspect-ratio: 1; overflow: hidden; border-radius: var(--r-lg); background: #34373c; box-shadow: var(--sh-media), 0 0 0 1px rgba(16, 40, 74, 0.08); transform: rotateX(var(--tx, 0deg)) rotateY(var(--ty, 0deg)); transition: transform 0.35s var(--ease); will-change: transform; }
.lens-video { display: block; width: 100%; height: 100%; object-fit: cover; }
.cap { display: flex; align-items: baseline; gap: 12px; max-width: 38em; margin-top: 8px; margin-left: auto; color: var(--muted); font-size: var(--fs-xs); line-height: 1.6; }
.home-hero .proof { position: relative; margin-top: clamp(36px, 5vw, 64px); border-bottom: 0; }
.wave { display: none; }

/* Needs */
.needs { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--s-4); }
.need { display: grid; grid-template-columns: 48px minmax(0, 1fr); align-items: start; gap: 4px 16px; padding: 24px; background: #fff; border: var(--hair); border-radius: var(--r-md); color: inherit; text-decoration: none; transition: border-color 0.25s, transform 0.25s var(--ease), box-shadow 0.25s; }
.need:hover { color: inherit; border-color: var(--navy); transform: translateY(-2px); box-shadow: var(--sh-2); }
.need .ic { grid-row: span 3; display: grid; place-items: center; width: 48px; height: 48px; border-radius: 50%; background: var(--tint-aqua); }
.need .ic .ico { width: 26px; height: 26px; color: var(--brand-blue-ink); }
.need h3 { font-size: var(--fs-h3-lg); line-height: 1.25; }
.need p { color: var(--muted); font-size: var(--fs-sm); }
.need .n { justify-self: start; margin-top: 8px; padding: 4px 10px; border-radius: var(--r-pill); background: var(--tint-aqua); color: var(--brand-teal-ink); font-size: var(--fs-xs); font-weight: 600; }

/* Collection by index */
.ix-tabs { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 10px; margin-bottom: 22px; }
.ix-tabs button { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; gap: 2px 12px; padding: 14px 16px; background: #fff; border: var(--hair); border-radius: var(--r-md); color: var(--navy); text-align: left; cursor: pointer; transition: border-color 0.2s, box-shadow 0.2s; }
.ix-tabs button:hover { border-color: var(--navy); }
.ix-tabs button b { font-size: 26px; font-weight: 700; letter-spacing: -0.02em; line-height: 1; font-variant-numeric: tabular-nums lining-nums; }
.ix-tabs button svg { grid-row: span 2; width: auto; height: 52px; overflow: visible; }
.ix-tabs button span { color: var(--muted); font-size: var(--fs-xs); }
.ix-tabs button[aria-selected="true"] { border-color: var(--navy); background: var(--surface-2); box-shadow: inset 0 -2px 0 var(--navy); }
.ix-note { display: flex; flex-wrap: wrap; align-items: baseline; gap: 10px 16px; margin: -4px 0 22px; color: var(--muted); font-size: var(--fs-sm); }
.ix-panel { display: flex; flex-wrap: wrap; justify-content: center; gap: 14px; }
.ix-panel > * { flex: 0 0 calc((100% - 4 * 14px) / 5); min-width: 0; }
.ix-panel[hidden] { display: none; }
.box { display: grid; grid-template-rows: auto 1fr; overflow: hidden; background: #fff; border: var(--hair); border-radius: var(--r-md); color: inherit; text-decoration: none; transition: transform 0.25s var(--ease), box-shadow 0.25s; }
.box:hover { color: inherit; transform: translateY(-2px); box-shadow: var(--sh-2); }
.box-pic { display: grid; place-items: center; aspect-ratio: 1; padding: 18px; background: var(--plate); border-bottom: var(--hair-2); }
.box-pic img { width: auto; max-width: min(84%, 220px); background: #fff; box-shadow: var(--sh-pack); transition: transform 0.3s var(--ease); }
.box:hover .box-pic img { transform: translateY(-4px); }
.box-pic .noimg { width: 80%; }
.box-body { display: grid; align-content: start; gap: 4px; padding: 12px 14px 14px; }
.box-name { color: var(--navy); font-size: var(--fs-title); font-weight: 600; line-height: 1.3; }
.box-tag { color: var(--muted); font-size: var(--fs-xs); }
.collection-foot { display: flex; flex-wrap: wrap; gap: 4px 26px; margin-top: 20px; }

/* Coating sheen demo */
.aqua-band { background: var(--surface-2); }
.demo { display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr); gap: clamp(28px, 5vw, 72px); align-items: center; }
.demo h2 { margin: 16px 0 18px; }
.demo .p { max-width: 32em; color: var(--ink-2); }
.tabs { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 28px; }
.tabs button { display: inline-flex; align-items: center; gap: 10px; min-height: 44px; padding: 0 18px; background: #fff; border: var(--hair); border-radius: var(--r-pill); color: var(--navy); font: 500 14px/1 var(--font); cursor: pointer; }
.tabs button:hover { border-color: var(--navy); }
.tabs button i { width: 14px; height: 14px; border-radius: 50%; }
.tabs button[aria-selected="true"] { border-color: var(--navy); background: var(--navy); color: #fff; }
.say { min-height: 3.4em; margin-top: 18px; color: var(--navy); font-size: 15px; }
.say b { font-weight: 600; }
.lens-card { margin: 0; padding: 12px; background: #fff; border: var(--hair-2); border-radius: var(--r-lg); box-shadow: var(--sh-2); }
.lens-card .lens-cap { display: flex; align-items: center; gap: 10px; padding: 12px 8px 4px; color: var(--muted); font-size: var(--fs-xs); }

/* Inside a coated lens next to the four parameters */
.tech { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr); gap: clamp(36px, 6vw, 96px); align-items: center; }
.layers { margin: 0; overflow: hidden; }
.lens-photo { overflow: hidden; border-radius: var(--r-md); background: #23292e; }
.lens-photo img { display: block; width: 100%; height: auto; }
.layers-photo { position: relative; overflow: hidden; border-radius: var(--r-lg); background: #3a3f45; box-shadow: var(--sh-media); }
.layers-photo img { display: block; width: 100%; height: auto; }
.layers-photo .mk { position: absolute; display: grid; place-items: center; width: 28px; height: 28px; margin: -40px 0 0 -14px; border-radius: 50%; background: #fff; color: var(--navy); font-size: 14px; font-weight: 700; box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3); }
.layers-photo .mk::after { content: ""; position: absolute; left: 50%; top: 100%; width: 1.5px; height: 12px; background: rgba(255, 255, 255, 0.8); }
.layer-key { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px 24px; margin: 18px 0 0; padding: 0; list-style: none; counter-reset: layer; }
.layer-key li { display: grid; grid-template-columns: 28px minmax(0, 1fr); gap: 0 10px; counter-increment: layer; }
.layer-key li::before { content: counter(layer); grid-row: span 2; display: grid; place-items: center; width: 28px; height: 28px; border-radius: 50%; background: var(--navy); color: #fff; font-size: var(--fs-xs); font-weight: 700; }
.layer-key b { color: var(--navy); font-size: 15px; }
.layer-key span { color: var(--muted); font-size: var(--fs-xs); }
.layers figcaption { margin-top: 14px; }
.layers .cap { margin-left: 0; }
.params { display: grid; border-top: var(--hair-strong); }
.param { display: grid; grid-template-columns: 48px minmax(0, 1fr); gap: 4px 18px; padding: 22px 0; border-bottom: var(--hair); }
.param .i { grid-row: span 3; color: var(--brand-teal-ink); font-size: 17px; font-weight: 600; line-height: 1.3; }
.param .k { color: var(--muted); font-size: var(--fs-label); font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase; }
.param h3 { font-size: var(--fs-h3-lg); }
.param p { color: var(--muted); font-size: var(--fs-sm); }

/* How to read a box */
.read { display: grid; grid-template-columns: minmax(0, 1fr) minmax(220px, 340px) minmax(0, 1fr); gap: 0 28px; align-items: stretch; padding-bottom: 64px; }
.read .img { position: relative; align-self: center; }
.read .frame { background: #fff; box-shadow: var(--sh-pack); }
.read .side { position: relative; }
.co { position: absolute; display: grid; grid-template-columns: 30px minmax(0, 1fr); gap: 2px 12px; width: 100%; transform: translateY(-15px); }
.co .num { grid-row: span 2; display: grid; place-items: center; width: 30px; height: 30px; border-radius: 50%; background: var(--navy); color: #fff; font-size: 16px; font-weight: 600; font-variant-numeric: tabular-nums lining-nums; }
.co b { padding-top: 3px; color: var(--navy); font-size: 20px; font-weight: 600; line-height: 1.2; }
.co span { color: var(--muted); font-size: var(--fs-xs); line-height: 1.55; }
.side.l .co { grid-template-columns: minmax(0, 1fr) 30px; text-align: right; }
.side.l .co .num { grid-column: 2; grid-row: 1 / span 2; }
.side.l .co b, .side.l .co span { grid-column: 1; }
.co::after { content: ""; position: absolute; top: 15px; width: 22px; height: 1px; background: var(--navy); opacity: 0.4; }
.side.r .co::after { left: -26px; }
.side.l .co::after { right: -26px; }
.read-note { max-width: 60em; margin: 0 auto; color: var(--muted); font-size: var(--fs-sm); text-align: center; }

/* Promises */
.promise { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(24px, 4vw, 64px); }
.promise > div { display: grid; align-content: start; gap: 12px; padding-top: 24px; border-top: var(--hair-strong); }
.promise .r { color: var(--brand-teal-ink); font-size: 20px; font-weight: 600; line-height: 1; }
.promise h3 { font-size: var(--fs-h3-lg); }
.promise p { color: var(--muted); font-size: 15px; }
.promise a { justify-self: start; display: inline-block; padding-block: 10px; color: var(--brand-blue-ink); font-size: var(--fs-sm); font-weight: 600; text-decoration: underline; text-underline-offset: 4px; }

/* Dealer panel */
.dealer { position: relative; overflow: hidden; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 0.95fr); gap: clamp(28px, 5vw, 64px); align-items: start; padding: clamp(24px, 5vw, 64px); border-radius: var(--r-lg); background: var(--surface-2); border: var(--hair-2); }
.dealer h2 { margin: 16px 0 24px; }
.checks { display: grid; gap: 14px; margin: 0; }
.checks div { display: grid; grid-template-columns: 30px minmax(0, 1fr); gap: 0 12px; }
.checks div::before { content: "✓"; grid-row: span 2; display: grid; place-items: center; width: 30px; height: 30px; border-radius: 50%; background: #fff; border: var(--hair-2); color: var(--brand-teal-ink); font-size: 14px; font-weight: 700; }
.checks dt { color: var(--navy); font-size: 15px; font-weight: 600; }
.checks dd { margin: 0; color: var(--muted); font-size: var(--fs-sm); }
/* Pill buttons: the need filters on the catalogue. */
.pills { display: flex; flex-wrap: wrap; gap: 8px; }
.pill { display: inline-flex; align-items: center; min-height: 44px; padding: 0 16px; border: var(--hair); border-radius: var(--r-pill); background: #fff; color: var(--navy); font: 500 14px/1.2 var(--font); cursor: pointer; }
.pill:hover { border-color: var(--navy); }
.pill[aria-pressed="true"] { background: var(--navy); border-color: var(--navy); color: #fff; }
.pill .ico { width: 18px; height: 18px; margin-right: 6px; color: inherit; }
/* How to order: steps that end at the footer contacts. */
.order-how { position: relative; z-index: 1; gap: 18px; padding: clamp(24px, 3vw, 40px); border: var(--hair); border-radius: var(--r-lg); box-shadow: var(--sh-2); }
.order-how h2, .order-how h3 { color: var(--navy); }
.how-steps { display: grid; gap: 16px; margin: 0; padding: 0; list-style: none; counter-reset: how; }
.how-steps li { display: grid; grid-template-columns: 34px minmax(0, 1fr); gap: 2px 14px; counter-increment: how; }
.how-steps li::before { content: counter(how); grid-row: span 2; display: grid; place-items: center; width: 34px; height: 34px; border-radius: 50%; background: var(--tint-aqua); color: var(--brand-teal-ink); font-weight: 700; }
.how-steps b { color: var(--navy); font-size: 16px; }
.how-steps span { color: var(--muted); font-size: var(--fs-sm); }
.ticks { display: grid; gap: 10px; margin: 0; padding: 0; list-style: none; }
.ticks li { position: relative; padding-left: 28px; color: var(--ink-2); }
.ticks li::before { content: "✓"; position: absolute; left: 0; top: 0; color: var(--brand-teal-ink); font-weight: 700; }
.split-form { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); gap: clamp(32px, 5vw, 64px); }

/* Tools and FAQ on the home page */
.tools { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--s-4); }
.tool { display: grid; grid-template-columns: 48px minmax(0, 1fr); align-content: start; gap: 6px 16px; padding: 24px; background: #fff; border: var(--hair); border-radius: var(--r-md); color: inherit; text-decoration: none; transition: border-color 0.25s, box-shadow 0.25s; }
.tool:hover { color: inherit; border-color: var(--navy); box-shadow: var(--sh-2); }
.tool .ic { grid-row: span 4; display: grid; place-items: center; width: 48px; height: 48px; border-radius: 50%; background: var(--tint-aqua); }
.tool .ic .ico { width: 26px; height: 26px; }
.tool .k { color: var(--muted); font-size: var(--fs-label); font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase; }
.tool h3 { font-size: var(--fs-h3-lg); }
.tool p { color: var(--muted); font-size: var(--fs-sm); }
.tool .go { color: var(--brand-blue-ink); font-size: var(--fs-sm); font-weight: 600; }
.faq-grid { display: grid; grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr); gap: clamp(28px, 5vw, 80px); }
.faq-grid h2 { margin-top: 16px; }

/* Công cụ đo PD: xem assets/pd/pd.css. Its sticky offsets follow this header. */
body .pd-lab { --header: var(--hdr-h); }

/* ---------- Responsive ---------- */
@media (max-width: 1180px) {
  .nav { gap: 18px; }
  .nav a { font-size: 14px; }
  .hdr { gap: 22px; }
}
@media (max-width: 1100px) {
  .cards { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .cards:not(#catalog) > .card { flex-basis: calc((100% - 2 * var(--gap-grid)) / 3); }
  .grid-4, .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ix-panel > * { flex-basis: calc((100% - 2 * 14px) / 3); }
  .ix-tabs { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .tech { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 1000px) {
  .nav { gap: 14px; }
}
@media (max-width: 900px) {
  :root { --hdr-h: 67px; }
  .topbar { display: none; }
  .nav { display: none; position: absolute; left: 0; right: 0; top: 100%; flex-direction: column; gap: 0; background: #fff; border-bottom: var(--hair); padding: 8px var(--gutter) 16px; box-shadow: var(--sh-2); }
  .nav.open { display: flex; }
  .nav a { display: flex; align-items: center; min-height: 48px; padding: 0; border-bottom: var(--hair-2); font-size: 17px; }
  .nav a::after { display: none; }
  .nav a[aria-current="page"] { color: var(--brand-teal-ink); }
  .menu-btn { display: inline-flex; }
  .hdr { min-height: 64px; justify-content: space-between; }
  .logo img { height: 34px; }
  .hero, .hero-toc, .split, .buy, .grid-2, .hero-ac, .demo, .dealer, .faq-grid, .split-form { grid-template-columns: minmax(0, 1fr); }
  .grid-3, .tools, .promise { grid-template-columns: minmax(0, 1fr); }
  .home-hero h1 em { white-space: normal; }
  .lens-stage { border-radius: 16px; }
  .cap { margin-left: 0; }
  .needs { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .proof { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .proof > div:nth-child(3) { padding-left: 0; border-left: 0; }
  .proof > div:nth-child(n + 3) { border-top: var(--hair-2); }
  .cat-grid { grid-template-columns: minmax(0, 1fr); gap: 16px; }
  .filters { position: static; display: none; max-height: none; overflow: visible; padding-right: 0; }
  .filters.open { display: flex; }
  .filters label { min-height: 44px; }
  .filter-toggle { display: inline-flex; margin-bottom: 12px; }
  .rrow { grid-template-columns: minmax(0, 1fr); gap: 12px; }
  .next-step { grid-template-columns: minmax(0, 1fr); }
  .next-step .cta { justify-content: flex-start; }
  .hero .grid-2.pair { grid-template-columns: repeat(2, minmax(0, 1fr)); align-items: end; }
  .symbols > div, .kv > div { grid-template-columns: minmax(0, 1fr); gap: 2px; }
  .sources { grid-template-columns: minmax(0, 1fr); }
  .foot-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .foot-grid > div:first-child { grid-column: 1 / -1; }
  .subnav .wrap { -webkit-mask-image: linear-gradient(90deg, #000 85%, transparent); mask-image: linear-gradient(90deg, #000 85%, transparent); padding-right: 40px; }
  .read { grid-template-columns: minmax(0, 1fr); gap: 18px; padding-bottom: 24px; }
  .read .img { order: -1; width: 100%; max-width: 320px; justify-self: center; }
  .read .side { display: contents; }
  .read .side.r .co:nth-child(1) { order: 1; }
  .read .side.l .co:nth-child(1) { order: 2; }
  .read .side.r .co:nth-child(2) { order: 3; }
  .read .side.l .co:nth-child(2) { order: 4; }
  .co { position: static; transform: none; }
  .co::after { display: none; }
  .side.l .co { grid-template-columns: 30px minmax(0, 1fr); text-align: left; }
  .side.l .co .num { grid-column: 1; }
  .side.l .co b, .side.l .co span { grid-column: 2; }
}
@media (max-width: 760px) {
  .qv-inner { grid-template-columns: minmax(0, 1fr); overflow: auto; }
  .qv-pic { min-height: 0; padding: 24px; }
  .qv-pic img { max-width: min(56%, 220px); }
  .qv-info { overflow: visible; padding: 22px 18px; }
  .ix-tabs { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ix-tabs button:last-child:nth-child(odd) { grid-column: 1 / -1; }
}
@media (max-width: 600px) {
  :root { --gap-grid: 12px; }
  body { line-height: 1.6; }
  .cards { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .cards:not(#catalog) > .card { flex-basis: calc((100% - var(--gap-grid)) / 2); }
  .card .pic { padding: 32px 10px 10px; }
  .card .pic img { max-width: 84%; }
  .card .chip { top: 9px; left: 9px; padding: 2px 8px; font-size: 11px; }
  .card .body { padding: 12px; }
  .card h3 { font-size: 15px; }
  .card .desc { display: none; }
  .rtable th { padding: 10px 12px; letter-spacing: 0.06em; }
  .rtable table { min-width: 0; }
  .rtable td { padding: 11px 12px; font-size: var(--fs-sm); white-space: nowrap; }
  .thick-row { grid-template-columns: 44px minmax(0, 1fr) 128px; gap: 10px; }
  .thick-row > span:last-child { font-size: 12px; }
  .thick-row b { font-size: 20px; }
  .ix-rows a { grid-template-columns: 58px minmax(0, 1fr) 16px; gap: 2px 12px; }
  .ix-rows .n { grid-column: 2; grid-row: 1; }
  .ix-rows .d { grid-column: 2; }
  .ix-rows .go { grid-column: 3; grid-row: 1; }
  .grid-4, .steps { grid-template-columns: minmax(0, 1fr); }
  .needs { grid-template-columns: minmax(0, 1fr); }
  .need { padding: 18px 20px; }
  .need p { display: none; }
  .specs { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .rsum { gap: 6px; }
  .rsum > div { padding: 8px 10px; }
  .rsum b { font-size: 16px; }
  .ix-panel { gap: 10px; }
  .ix-panel > * { flex-basis: calc((100% - 10px) / 2); }
  .box-body { padding: 11px 12px 13px; }
  .foot-grid { grid-template-columns: minmax(0, 1fr); }
  .foot-grid > div > a { min-height: 44px; }
  /* Need filters: one swipeable row so the first boxes appear sooner. */
  .pills { flex-wrap: nowrap; overflow-x: auto; margin-inline: calc(-1 * var(--gutter)); padding-inline: var(--gutter); scrollbar-width: none; }
  .pills::-webkit-scrollbar { display: none; }
  .page-head:has(.pills) { padding-bottom: 16px; }
  .pill { flex: none; }
  .home-hero h1 { font-size: clamp(34px, 9.5vw, 44px); }
  .proof > div { padding: 18px 12px 20px 0; }
  .proof > div + div { padding-left: 12px; }
  .proof > div:nth-child(3) { padding-left: 0; }
  .proof b { font-size: clamp(24px, 7.4vw, 30px); }
  .faq summary { font-size: var(--fs-title); }
  .ix-tabs button b { font-size: 28px; }
  .ix-tabs button { padding: 12px 14px; }
  .ix-tabs button b { grid-area: 1 / 1; }
  .ix-tabs button svg { grid-area: 1 / 2; height: 40px; }
  .ix-tabs button span { grid-area: 2 / 1 / 3 / 3; }
  .layer-key { grid-template-columns: minmax(0, 1fr); }
  .layers-photo .mk { width: 24px; height: 24px; margin: -34px 0 0 -12px; font-size: 12px; }
  .pack-strip { gap: 12px; flex-wrap: wrap; }
  .pack-strip a, .pack-strip > img { flex: 0 0 calc(50% - 6px); }
}
@media (max-width: 360px) {
  .rtable th, .rtable td { padding-inline: 8px; }
  .rtable td { font-size: var(--fs-xs); }
}