/* =========================================================
   PDENT 2026 — DESIGN TOKENS
   Layout: header sticky · Hero "Vũ trụ PDENT" (backdrop phi hành gia + hàm răng scan
   + quỹ đạo sản phẩm) · Brands carousel · About + bản đồ VN · Tin tức · Đăng ký tư vấn · Footer.
   Màu theo Brand Guideline PDENT; màu chủ đạo #264682.
   Nền tối --pd-navy-* là sắc độ suy ra từ Xanh LV1 → [Cần xác nhận].
   Thang chữ guideline: A = b × (3/2) × B, B = 14px.
   ========================================================= */
:root{
  /* Brand palette */
  --pd-blue-1:#264682; --pd-blue-2:#547DBF; --pd-blue-3:#ACCDEC; --pd-blue-4:#D5E6F5;
  --pd-grey-1:#434747; --pd-grey-2:#7F7F7F; --pd-grey-3:#CCCBCB; --pd-grey-4:#EAEBEC;
  --pd-white:#FFFFFF;
  --pd-navy-900:#081227; --pd-navy-800:#0D1B38; --pd-navy-700:#132650;

  /* Semantic — LIGHT */
  --c-bg:#FFFFFF;
  --c-bg-alt:#F3F7FC;
  --c-surface:#FFFFFF;
  --c-heading:var(--pd-blue-1);
  --c-text:var(--pd-grey-1);
  --c-text-muted:var(--pd-grey-2);
  --c-accent:var(--pd-blue-2);
  --c-accent-soft:var(--pd-blue-4);
  --c-line:rgba(38,70,130,.12);
  --c-glass:rgba(255,255,255,.62);
  --c-glass-border:rgba(84,125,191,.22);
  --c-btn-bg:var(--pd-blue-1);
  --c-btn-fg:#FFFFFF;
  --c-btn-border:transparent;
  --c-btn2-fg:var(--pd-blue-1);
  --c-btn2-border:rgba(38,70,130,.28);
  --c-header-bg:rgba(255,255,255,.78);
  --c-input-bg:#FFFFFF;
  --c-shadow:0 18px 40px -22px rgba(38,70,130,.45);
  --c-map-land:var(--pd-blue-1);
  --c-map-stroke:rgba(255,255,255,.55);
  --c-map-region:#E2E1DE; --c-map-region-stroke:#FFFFFF; --c-map-pin:var(--pd-blue-3);
  --c-point:84,125,191; --c-point-hi:38,70,130; --c-ring:84,125,191;  /* rgb triplets (canvas) */
  --c-pod-bg:rgba(255,255,255,.78);
  --logo-light:block; --logo-dark:none;

  /* Typography */
  --font-brand:"Montserrat","Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --fs-base:14px; --fs-sm:14px; --fs-md:21px; --fs-lg:31.5px; --fs-xl:47px; --fs-2xl:71px;
  --fw-regular:400; --fw-medium:500; --fw-semibold:600; --fw-bold:700; --fw-xbold:800;

  /* Spacing & shape */
  --space-1:4px; --space-2:8px; --space-3:12px; --space-4:16px; --space-5:24px;
  --space-6:32px; --space-7:48px; --space-8:64px; --space-9:96px;
  --section-y:clamp(64px,9vw,120px);
  --container:1240px; --gutter:clamp(16px,4vw,40px);
  --radius-sm:8px; --radius-md:14px; --radius-lg:22px; --radius-pill:999px;
  --header-h:76px;
  --ease:cubic-bezier(.2,.7,.2,1);
}
/* Dark theme values (shared by media query, [data-theme=dark] and .surface-dark) */
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --c-bg:var(--pd-navy-900); --c-bg-alt:var(--pd-navy-800); --c-surface:var(--pd-navy-700);
    --c-heading:#FFFFFF; --c-text:var(--pd-blue-4); --c-text-muted:rgba(213,230,245,.62);
    --c-accent:var(--pd-blue-3); --c-accent-soft:rgba(84,125,191,.2);
    --c-line:rgba(172,205,236,.14); --c-glass:rgba(38,70,130,.28); --c-glass-border:rgba(172,205,236,.18);
    --c-btn-bg:var(--pd-blue-1); --c-btn-fg:#FFFFFF; --c-btn-border:rgba(172,205,236,.35);
    --c-btn2-fg:var(--pd-blue-4); --c-btn2-border:rgba(213,230,245,.3);
    --c-header-bg:rgba(8,18,39,.7); --c-input-bg:rgba(255,255,255,.04);
    --c-shadow:0 18px 40px -22px rgba(0,0,0,.7);
    --c-map-land:rgba(213,230,245,.92); --c-map-stroke:rgba(255,255,255,.4);
    --c-map-region:rgba(213,230,245,.09); --c-map-region-stroke:rgba(12,27,61,.55); --c-map-pin:var(--pd-blue-1);
    --c-point:172,205,236; --c-point-hi:255,255,255; --c-ring:172,205,236;
    --c-pod-bg:rgba(13,27,56,.55);
    --logo-light:none; --logo-dark:block;
    color-scheme:dark;
  }
}
:root[data-theme="dark"], .surface-dark{
  --c-bg:var(--pd-navy-900); --c-bg-alt:var(--pd-navy-800); --c-surface:var(--pd-navy-700);
  --c-heading:#FFFFFF; --c-text:var(--pd-blue-4); --c-text-muted:rgba(213,230,245,.62);
  --c-accent:var(--pd-blue-3); --c-accent-soft:rgba(84,125,191,.2);
  --c-line:rgba(172,205,236,.14); --c-glass:rgba(38,70,130,.28); --c-glass-border:rgba(172,205,236,.18);
  --c-btn-bg:var(--pd-blue-1); --c-btn-fg:#FFFFFF; --c-btn-border:rgba(172,205,236,.35);
  --c-btn2-fg:var(--pd-blue-4); --c-btn2-border:rgba(213,230,245,.3);
  --c-header-bg:rgba(8,18,39,.7); --c-input-bg:rgba(255,255,255,.04);
  --c-shadow:0 18px 40px -22px rgba(0,0,0,.7);
  --c-map-land:rgba(213,230,245,.92); --c-map-stroke:rgba(255,255,255,.4);
  --c-map-region:rgba(213,230,245,.09); --c-map-region-stroke:rgba(12,27,61,.55); --c-map-pin:var(--pd-blue-1);
  --c-point:172,205,236; --c-point-hi:255,255,255; --c-ring:172,205,236;
  --c-pod-bg:rgba(13,27,56,.55);
  --logo-light:none; --logo-dark:block;
}
:root[data-theme="dark"]{color-scheme:dark}
/* Light card surface used inside any theme (brand cards, as in Canva) */
.surface-light{
  --c-heading:var(--pd-blue-1); --c-text:var(--pd-grey-1); --c-text-muted:var(--pd-grey-2);
  --c-accent:var(--pd-blue-2); --c-accent-soft:var(--pd-blue-4); --c-line:rgba(38,70,130,.12);
  --c-surface:#FFFFFF;
}

/* =========================================================
   BASE
   ========================================================= */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0; background:var(--c-bg); color:var(--c-text);
  font-family:var(--font-brand); font-size:var(--fs-base); line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%; display:block}
a{color:inherit; text-decoration:none}
:focus-visible{outline:2px solid var(--c-accent); outline-offset:3px; border-radius:6px}
.container{max-width:var(--container); margin-inline:auto; padding-inline:var(--gutter)}
.section{padding-block:var(--section-y); background:var(--c-bg); color:var(--c-text)}
.section--alt{background:var(--c-bg-alt)}
.section-head{display:flex; flex-direction:column; align-items:center; text-align:center; gap:var(--space-2); margin-bottom:var(--space-7)}
.section-head__eyebrow{font-size:12px; font-weight:var(--fw-semibold); letter-spacing:.18em; text-transform:uppercase; color:var(--c-accent)}
.section-head__title{margin:0; font-size:clamp(28px,3.4vw,var(--fs-xl)); line-height:1.12; font-weight:var(--fw-bold); color:var(--c-heading); text-transform:uppercase; letter-spacing:-.01em; text-wrap:balance}
.section-head__sub{margin:0; font-size:var(--fs-md); font-weight:var(--fw-regular); color:var(--c-text-muted)}
.section-head--left{align-items:flex-start; text-align:left}
.placeholder-tag{
  display:inline-flex; align-items:center; gap:6px; width:fit-content;
  font-size:10.5px; font-weight:var(--fw-semibold); letter-spacing:.08em; text-transform:uppercase;
  color:var(--c-text-muted); border:1px dashed var(--c-glass-border); border-radius:var(--radius-pill);
  padding:4px 10px; background:var(--c-glass);
}
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:10px;
  font-family:inherit; font-size:var(--fs-sm); font-weight:var(--fw-semibold); letter-spacing:.01em;
  padding:13px 22px; border-radius:var(--radius-pill); cursor:pointer; border:1px solid transparent;
  transition:transform .25s var(--ease), box-shadow .25s var(--ease), background-color .25s, color .25s;
}
.btn svg{width:16px; height:16px; transition:transform .25s var(--ease)}
.btn--primary{background:var(--c-btn-bg); color:var(--c-btn-fg); border-color:var(--c-btn-border); box-shadow:0 8px 24px -10px rgba(38,70,130,.7)}
.btn--primary:hover{transform:translateY(-2px); box-shadow:0 14px 30px -12px rgba(38,70,130,.9)}
.btn--primary:hover svg{transform:translateX(3px)}
.btn--ghost{background:transparent; color:var(--c-btn2-fg); border-color:var(--c-btn2-border)}
.btn--ghost:hover{background:var(--c-accent-soft)}
.btn--sm{padding:9px 16px}
.link-arrow{display:inline-flex; align-items:center; gap:8px; font-weight:var(--fw-semibold); color:var(--c-heading); font-size:var(--fs-sm)}
.link-arrow svg{width:14px; height:14px; transition:transform .25s var(--ease)}
.link-arrow:hover svg{transform:translateX(4px)}

/* =========================================================
   SECTION: HEADER  (.site-header)
   ========================================================= */
.site-header{
  position:sticky; top:env(safe-area-inset-top,0px); z-index:50;
  background:var(--c-header-bg);
  -webkit-backdrop-filter:saturate(1.4) blur(14px); backdrop-filter:saturate(1.4) blur(14px);
  border-bottom:1px solid var(--c-line);
}
.site-header__inner{height:var(--header-h); display:flex; align-items:center; gap:var(--space-6)}
.site-header__logo{display:flex; align-items:center; flex-shrink:0}
.site-header__logo img{height:46px; width:auto}
.logo--light{display:var(--logo-light)}
.logo--dark{display:var(--logo-dark)}
.site-header__nav{flex:1; display:flex; justify-content:center}
.site-header__menu{display:flex; gap:var(--space-1); list-style:none; margin:0; padding:0}
.site-header__link{white-space:nowrap; display:inline-flex; align-items:center; gap:6px; padding:10px 14px; border-radius:var(--radius-pill); font-size:var(--fs-sm); font-weight:var(--fw-medium); color:var(--c-text); transition:background-color .2s, color .2s}
.site-header__link:hover{background:var(--c-accent-soft); color:var(--c-heading)}
.site-header__link svg{width:10px; height:10px; opacity:.6}
.site-header__actions{display:flex; align-items:center; gap:var(--space-3)}
.lang-switch{display:flex; font-size:12px; font-weight:var(--fw-semibold); border:1px solid var(--c-line); border-radius:var(--radius-pill); padding:3px}
.lang-switch button{all:unset; cursor:pointer; padding:4px 9px; border-radius:var(--radius-pill); color:var(--c-text-muted)}
.lang-switch button[aria-pressed="true"]{background:var(--c-accent-soft); color:var(--c-heading)}
.icon-btn{all:unset; cursor:pointer; width:38px; height:38px; border-radius:50%; display:grid; place-items:center; border:1px solid var(--c-line); color:var(--c-heading); transition:background-color .2s}
.icon-btn:hover{background:var(--c-accent-soft)}
.icon-btn svg{width:18px; height:18px}
.icon-sun{display:var(--logo-dark)} .icon-moon{display:var(--logo-light)}
.site-header__burger{display:none}
.mobile-nav{position:fixed; inset:0; z-index:60; background:var(--c-bg); padding:calc(env(safe-area-inset-top,0px) + var(--space-5)) var(--gutter) calc(env(safe-area-inset-bottom,0px) + var(--space-6)); display:flex; flex-direction:column; gap:var(--space-5)}
.mobile-nav[hidden]{display:none}
.mobile-nav__top{display:flex; justify-content:space-between; align-items:center}
.mobile-nav__top img{height:42px}
.mobile-nav__list{list-style:none; margin:0; padding:0; display:flex; flex-direction:column}
.mobile-nav__list a{display:block; padding:16px 0; font-size:var(--fs-md); font-weight:var(--fw-semibold); color:var(--c-heading); border-bottom:1px solid var(--c-line)}

/* =========================================================
   SECTION: HERO  (.hero) — "Vũ trụ PDENT", luôn nền tối
   ========================================================= */
.hero{position:relative; overflow:hidden; isolation:isolate; background:radial-gradient(120% 70% at 50% 100%, #06233D 0%, #020A17 70%); color:var(--c-text)}
.hero__backdrop{position:absolute; inset:0; z-index:-2; --bd-scale:.74}
@media (max-width:900px){ .hero__backdrop{--bd-scale:.86} }
.hero__backdrop img{transform:translate3d(calc(var(--px) * -14px), calc(var(--py) * -8px), 0) scale(var(--bd-scale)); transform-origin:50% 100%; transition:transform .6s var(--ease); position:absolute; left:0; bottom:0; width:100%; height:auto; min-height:62%; object-fit:cover; object-position:50% 100%; -webkit-mask-image:linear-gradient(180deg, transparent 0%, #000 30%), linear-gradient(90deg, transparent 0%, #000 16%, #000 84%, transparent 100%); -webkit-mask-composite:source-in; mask-image:linear-gradient(180deg, transparent 0%, #000 30%), linear-gradient(90deg, transparent 0%, #000 16%, #000 84%, transparent 100%); mask-composite:intersect}
.hero__backdrop::after{ /* top fade for legibility */
  content:""; position:absolute; inset:0;
  background:linear-gradient(180deg, rgba(2,10,23,.55) 0%, rgba(2,10,23,0) 35%, rgba(2,10,23,0) 85%, rgba(8,18,39,.6) 100%);
}
.hero__inner{position:relative; display:flex; flex-direction:column; align-items:center; text-align:center; padding-block:clamp(40px,6vw,72px) 0}
.hero__content{display:flex; flex-direction:column; align-items:center; gap:var(--space-4); max-width:960px}
.hero__title{
  position:relative; margin:0; padding:10px 22px; color:var(--c-heading);
  font-size:clamp(26px,3.6vw,52px); line-height:1.12; font-weight:300;
  letter-spacing:.07em; text-wrap:balance; text-transform:uppercase;
  text-shadow:0 0 30px rgba(84,125,191,.5);
}
@media (min-width:900px){ .hero__title{white-space:nowrap} }
/* HUD corner brackets framing the title (tech element, no underline) */
.hero__title::before,.hero__title::after{content:""; position:absolute; width:18px; height:18px; pointer-events:none}
.hero__title::before{left:0; top:0; border-left:2px solid var(--pd-blue-3); border-top:2px solid var(--pd-blue-3); border-top-left-radius:4px}
.hero__title::after{right:0; bottom:0; border-right:2px solid var(--pd-blue-3); border-bottom:2px solid var(--pd-blue-3); border-bottom-right-radius:4px}
.hero__title em{
  font-style:normal; font-weight:800; letter-spacing:.05em;
  background:linear-gradient(100deg, var(--pd-blue-3) 0%, #FFFFFF 22%, var(--pd-blue-3) 44%, var(--pd-blue-2) 60%, #FFFFFF 78%, var(--pd-blue-3) 100%);
  background-size:220% 100%;
  -webkit-background-clip:text; background-clip:text; color:transparent;
  animation:shimmer 7s linear infinite;
}
/* Decode effect: each char keeps its width; a random glyph is painted on top while "decoding" */
.ch.is-scrambling{position:relative; color:transparent; -webkit-text-fill-color:transparent}
.ch.is-scrambling::after{content:attr(data-g); position:absolute; left:50%; top:0; transform:translateX(-50%); color:var(--pd-blue-3); -webkit-text-fill-color:var(--pd-blue-3); opacity:.85; text-shadow:0 0 12px rgba(172,205,236,.6)}
.hero__title > .ch.is-done{animation:charIn .5s var(--ease)}
/* Tech ticker under the title (synced with workflow step) */
.hero__ticker{display:inline-flex; align-items:center; gap:10px; min-height:38px; padding:8px 16px; border-radius:var(--radius-pill);
  font-size:12px; font-weight:var(--fw-semibold); letter-spacing:.16em; text-transform:uppercase; color:var(--pd-blue-3);
  background:rgba(8,18,39,.45); border:1px solid rgba(172,205,236,.22); -webkit-backdrop-filter:blur(8px); backdrop-filter:blur(8px)}
.hero__ticker-dot{width:7px; height:7px; border-radius:50%; background:var(--pd-blue-3); box-shadow:0 0 0 0 rgba(172,205,236,.6); animation:ping 2s var(--ease) infinite}
.hero__ticker-sep{opacity:.45}
.hero__ticker-word{color:#FFFFFF; white-space:nowrap}
.caret{display:inline-block; width:2px; height:1.15em; background:var(--pd-blue-3); margin-left:2px; vertical-align:-3px; animation:blink 1s steps(1) infinite}
/* Background tech grid + parallax */
.hero{--px:0; --py:0}
.hero__grid{position:absolute; inset:0; z-index:-1; pointer-events:none;
  background-image:linear-gradient(rgba(172,205,236,.07) 1px, transparent 1px), linear-gradient(90deg, rgba(172,205,236,.07) 1px, transparent 1px);
  background-size:64px 64px; transform:translate3d(calc(var(--px) * 10px), calc(var(--py) * 6px), 0);
  -webkit-mask-image:radial-gradient(ellipse 60% 50% at 50% 38%, #000 15%, transparent 72%); mask-image:radial-gradient(ellipse 60% 50% at 50% 38%, #000 15%, transparent 72%);
  animation:gridDrift 40s linear infinite}
/* HUD panels (desktop) */
.hud{position:absolute; top:clamp(40px,6vw,72px); width:218px; z-index:4; text-align:left;
  padding:16px 18px; border-radius:var(--radius-md); color:var(--c-text);
  background:linear-gradient(160deg, rgba(19,38,80,.55), rgba(8,18,39,.35)); border:1px solid rgba(172,205,236,.18);
  -webkit-backdrop-filter:blur(10px); backdrop-filter:blur(10px)}
.hud::before,.hud::after{content:""; position:absolute; width:12px; height:12px; border:1.5px solid var(--pd-blue-3)}
.hud::before{left:-1px; top:-1px; border-right:0; border-bottom:0; border-top-left-radius:6px}
.hud::after{right:-1px; bottom:-1px; border-left:0; border-top:0; border-bottom-right-radius:6px}
.hud--left{left:var(--gutter)}
.hud--right{right:var(--gutter)}
.hud__title{display:flex; align-items:center; gap:8px; font-size:10.5px; font-weight:var(--fw-bold); letter-spacing:.18em; text-transform:uppercase; color:var(--pd-blue-3); margin-bottom:12px}
.hud__dot{width:6px; height:6px; border-radius:50%; background:var(--pd-blue-3); animation:ping 2s var(--ease) infinite}
.hud__steps{list-style:none; margin:0; padding:0; display:flex; flex-direction:column; gap:4px; position:relative}
.hud__steps li{display:flex; gap:10px; align-items:flex-start; padding:7px 8px; border-radius:10px; transition:background-color .4s, opacity .4s; opacity:.55}
.hud__steps li.is-active{background:rgba(84,125,191,.22); opacity:1}
.hud__num{font-size:11px; font-weight:var(--fw-bold); color:var(--pd-blue-3); font-variant-numeric:tabular-nums; padding-top:1px}
.hud__steps b{display:block; font-size:12.5px; font-weight:var(--fw-semibold); color:#FFFFFF; line-height:1.35}
.hud__steps small{display:block; font-size:10.5px; color:var(--c-text-muted); letter-spacing:.02em}
.hud__big{font-size:40px; font-weight:var(--fw-bold); color:#FFFFFF; line-height:1; font-variant-numeric:tabular-nums; letter-spacing:-.02em}
.hud__big small{font-size:16px; color:var(--pd-blue-3); margin-left:2px}
.hud__bar{height:4px; border-radius:4px; background:rgba(172,205,236,.15); margin:12px 0 14px; overflow:hidden}
.hud__bar span{display:block; height:100%; width:0; background:linear-gradient(90deg, var(--pd-blue-2), var(--pd-blue-3), #FFFFFF); box-shadow:0 0 10px rgba(172,205,236,.8)}
.hud__meta{display:grid; grid-template-columns:1fr 1fr; gap:10px; margin:0}
.hud__meta dt{font-size:10px; letter-spacing:.1em; text-transform:uppercase; color:var(--c-text-muted)}
.hud__meta dd{margin:2px 0 0; font-size:13px; font-weight:var(--fw-semibold); color:#FFFFFF; font-variant-numeric:tabular-nums}
.hud__note{margin-top:10px; font-size:10px; color:var(--c-text-muted); letter-spacing:.04em}
/* Stage corner brackets */
.hero__frame{position:absolute; inset:4% 2% 6%; pointer-events:none; z-index:0}
.hero__frame i{position:absolute; width:26px; height:26px; border:1.5px solid rgba(172,205,236,.35)}
.hero__frame i:nth-child(1){left:0; top:0; border-right:0; border-bottom:0}
.hero__frame i:nth-child(2){right:0; top:0; border-left:0; border-bottom:0}
.hero__frame i:nth-child(3){left:0; bottom:0; border-right:0; border-top:0}
.hero__frame i:nth-child(4){right:0; bottom:0; border-left:0; border-top:0}
.pod.is-active .pod__orb{border-color:var(--pd-blue-3); box-shadow:0 0 0 6px rgba(172,205,236,.16), 0 0 34px rgba(172,205,236,.45), 0 20px 40px -18px rgba(0,0,0,.8)}
.pod.is-active .pod__label{background:var(--pd-blue-1); border-color:var(--pd-blue-3)}
.hero__subrow{display:flex; flex-wrap:wrap; justify-content:center; align-items:center; gap:12px 18px}
.hero__subtitle{margin:0; font-size:var(--fs-md); color:var(--c-text)}
.hero__subtitle strong{font-weight:var(--fw-bold); color:var(--c-heading); letter-spacing:.04em}
.hero__cta{display:flex; flex-wrap:wrap; justify-content:center; gap:var(--space-3); margin-top:var(--space-2)}

/* Stage: dental arch scan + orbiting products */
.hero__visual{position:relative; width:min(1080px,100%); aspect-ratio:2.05/1; margin-top:clamp(0px,1vw,12px)}
.hero__canvas{position:absolute; inset:0; width:100%; height:100%; z-index:2; pointer-events:none}
.hero__orbit{position:absolute; inset:0; z-index:1; pointer-events:none}
.hero__orbit.is-front{z-index:3}
.pod{position:absolute; left:0; top:0; pointer-events:auto; display:flex; flex-direction:column; align-items:center; gap:8px; will-change:transform,opacity}
.pod__orb{
  width:var(--pod-size,120px); height:var(--pod-size,120px); flex-shrink:0; overflow:hidden; border-radius:50%; display:grid; place-items:center;
  background:radial-gradient(circle at 50% 35%, rgba(172,205,236,.22), rgba(13,27,56,.55) 70%);
  border:1px solid rgba(172,205,236,.28);
  -webkit-backdrop-filter:blur(8px); backdrop-filter:blur(8px);
  box-shadow:0 20px 40px -18px rgba(0,0,0,.8), inset 0 1px 0 rgba(255,255,255,.18), 0 0 0 6px rgba(84,125,191,.08);
  transition:transform .35s var(--ease), box-shadow .35s var(--ease);
}
.pod__orb img{width:74%; height:74%; min-height:0; object-fit:contain; filter:drop-shadow(0 8px 10px rgba(0,0,0,.45))}
.pod:hover .pod__orb{transform:scale(1.08); box-shadow:0 22px 50px -16px rgba(0,0,0,.9), 0 0 0 8px rgba(84,125,191,.18)}
.pod__label{font-size:11px; font-weight:var(--fw-semibold); letter-spacing:.06em; text-transform:uppercase; color:#FFFFFF; white-space:nowrap; padding:3px 10px; border-radius:var(--radius-pill); background:rgba(8,18,39,.6); border:1px solid rgba(172,205,236,.2)}
.hero__scroll{display:flex; flex-direction:column; align-items:center; gap:8px; width:fit-content; margin:var(--space-3) auto 0; padding-bottom:var(--space-6); font-size:11px; letter-spacing:.16em; text-transform:uppercase; font-weight:var(--fw-semibold); color:var(--c-text-muted)}
.hero__scroll span{width:1px; height:28px; background:linear-gradient(var(--c-accent), transparent); animation:drip 2.2s var(--ease) infinite}

/* =========================================================
   SECTION: BRANDS  (.brands) — carousel thương hiệu phân phối
   ========================================================= */
.brands{overflow:hidden}
.brands__viewport{position:relative}
.brands__track{
  display:flex; gap:var(--space-5); overflow-x:auto; scroll-snap-type:x mandatory; scroll-behavior:smooth;
  padding:var(--space-6) calc(50% - min(170px, 40vw)); scrollbar-width:none;
}
.brands__track::-webkit-scrollbar{display:none}
.brand-card{
  flex:0 0 min(340px, 80vw); scroll-snap-align:center;
  display:flex; flex-direction:column; border-radius:var(--radius-lg); overflow:hidden;
  background:var(--c-surface); color:var(--c-text); box-shadow:var(--c-shadow);
  border:1px solid var(--c-line);
  transform:scale(.92); opacity:.7; transition:transform .45s var(--ease), opacity .45s var(--ease), box-shadow .45s var(--ease);
}
.brand-card.is-active{transform:scale(1); opacity:1; box-shadow:0 30px 60px -28px rgba(38,70,130,.65)}
.brand-card__media{position:relative; height:240px; display:flex; align-items:center; justify-content:center; padding:48px var(--space-5) var(--space-5);
  background:radial-gradient(circle at 50% 40%, #FFFFFF 0%, var(--pd-blue-4) 100%)}
.brand-card__media img{width:100%; height:100%; object-fit:contain; filter:drop-shadow(0 14px 16px rgba(38,70,130,.25)); transition:transform .5s var(--ease)}
.brand-card:hover .brand-card__media img{transform:translateY(-4px) scale(1.03)}
.brand-card__cat{position:absolute; left:var(--space-4); top:var(--space-4); font-size:11px; font-weight:var(--fw-semibold); letter-spacing:.06em; text-transform:uppercase; color:var(--pd-blue-1); background:rgba(255,255,255,.85); border:1px solid rgba(38,70,130,.12); border-radius:var(--radius-pill); padding:4px 10px}
.brand-card__body{display:flex; flex-direction:column; gap:var(--space-3); padding:var(--space-5); flex:1}
.brand-card__name{margin:0; font-size:var(--fs-md); font-weight:var(--fw-xbold); letter-spacing:.02em; color:var(--c-heading); text-transform:uppercase}
.brand-card__product{font-size:12px; color:var(--c-text-muted); margin-top:-6px}
.brand-card__desc{margin:0; color:var(--c-text); font-size:13.5px; line-height:1.6}
.brand-card__foot{margin-top:auto; padding-top:var(--space-3); border-top:1px solid var(--c-line)}
.brands__controls{display:flex; justify-content:center; align-items:center; gap:var(--space-4); margin-top:var(--space-3)}
.brands__dots{display:flex; gap:8px}
.brands__dots button{all:unset; cursor:pointer; width:8px; height:8px; border-radius:var(--radius-pill); background:var(--c-line); transition:width .3s var(--ease), background-color .3s}
.brands__dots button[aria-current="true"]{width:28px; background:var(--c-accent)}
.brands__note{display:flex; justify-content:center; margin-top:var(--space-5)}

/* =========================================================
   SECTION: ABOUT  (.about) — bản đồ + số liệu
   ========================================================= */
.about__grid{display:grid; grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr); gap:clamp(32px,5vw,80px); align-items:center}
.about__map{position:relative; max-width:580px; width:100%; margin-inline:auto}
@media (min-width:1280px){ .about__map{max-width:620px} }
.about__map svg{width:100%; height:auto; overflow:visible}
.map-land{fill:var(--c-map-land); stroke:var(--c-map-stroke); stroke-width:.8}
.map-island{fill:var(--c-map-land)}
.map-region{fill:var(--c-map-region); stroke:var(--c-map-region-stroke); stroke-width:1.2; stroke-linejoin:round}
.about,.map-band{position:relative; overflow:hidden; isolation:isolate}
.about__content{position:relative; z-index:1}
.map-label{font-family:var(--font-brand); font-size:10px; font-weight:600; fill:var(--c-text-muted); letter-spacing:.04em}
.map-pin__dot{fill:var(--c-map-pin); stroke:#FFFFFF; stroke-width:2}
.map-pin__pulse{fill:none; stroke:var(--pd-blue-2); stroke-width:1.5; transform-box:fill-box; transform-origin:center; animation:pulse 2.4s var(--ease) infinite}
.map-pin__label{font-family:var(--font-brand); font-size:12px; font-weight:700; fill:var(--c-heading)}
.about__content{display:flex; flex-direction:column; gap:var(--space-5); min-width:0}
.about__logo img{height:72px; width:auto}
.about__lead{margin:0; font-size:15.5px; line-height:1.8; color:var(--c-text); max-width:60ch}
.stats{display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:var(--space-5); padding-top:var(--space-5); border-top:1px solid var(--c-line)}
.stat{display:flex; flex-direction:column; gap:4px; min-width:0}
.stat__num{font-size:clamp(32px,3.6vw,var(--fs-xl)); font-weight:var(--fw-bold); line-height:1; color:var(--c-heading); font-variant-numeric:tabular-nums; letter-spacing:-.02em}
.stat__num sup{font-size:.5em; color:var(--c-accent); margin-left:2px}
.stat__label{font-size:13px; color:var(--c-text-muted); line-height:1.45}

/* =========================================================
   SECTION: NEWS  (.news)
   ========================================================= */
.news__head{display:flex; justify-content:space-between; align-items:flex-end; gap:var(--space-4); flex-wrap:wrap; margin-bottom:var(--space-7)}
.news__head .section-head{margin-bottom:0}
.news__grid{display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:var(--space-5)}
.news-card{display:flex; flex-direction:column; border-radius:var(--radius-lg); overflow:hidden; background:var(--c-surface); border:1px solid var(--c-line); box-shadow:var(--c-shadow); transition:transform .35s var(--ease), box-shadow .35s var(--ease); min-width:0}
.news-card:hover{transform:translateY(-6px)}
.news-card__media{position:relative; aspect-ratio:16/10; display:grid; place-items:center; overflow:hidden;
  background:linear-gradient(135deg, var(--pd-blue-1), var(--pd-navy-800) 70%)}
.news-card__media::before{content:""; position:absolute; inset:0; background-image:radial-gradient(rgba(172,205,236,.35) 1px, transparent 1.5px); background-size:18px 18px; opacity:.5}
.news-card__media svg{position:relative; width:44px; height:44px; color:var(--pd-blue-3); opacity:.8}
.news-card__media .placeholder-tag{position:absolute; right:12px; bottom:12px; color:#D5E6F5; border-color:rgba(213,230,245,.35); background:rgba(8,18,39,.45)}
.news-card__chip{position:absolute; left:12px; top:12px; font-size:11px; font-weight:var(--fw-semibold); letter-spacing:.06em; text-transform:uppercase; color:#FFFFFF; background:rgba(84,125,191,.85); border-radius:var(--radius-pill); padding:4px 10px}
.news-card__body{display:flex; flex-direction:column; gap:var(--space-3); padding:var(--space-5); flex:1}
.news-card__title{margin:0; font-size:16px; line-height:1.45; font-weight:var(--fw-bold); color:var(--c-heading); display:-webkit-box; -webkit-line-clamp:3; -webkit-box-orient:vertical; overflow:hidden}
.news-card__excerpt{margin:0; font-size:13.5px; color:var(--c-text-muted); display:-webkit-box; -webkit-line-clamp:3; -webkit-box-orient:vertical; overflow:hidden}
.news-card__foot{margin-top:auto}

/* =========================================================
   SECTION: CONSULT  (.consult) — đăng ký tư vấn
   ========================================================= */
.consult__panel{display:grid; grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr); gap:clamp(24px,5vw,72px); align-items:start;
  padding:clamp(24px,4vw,56px); border-radius:calc(var(--radius-lg) + 6px);
  background:linear-gradient(140deg, var(--pd-blue-1), var(--pd-navy-800)); color:var(--c-text); position:relative; overflow:hidden}
.consult__panel::after{content:""; position:absolute; right:-120px; top:-160px; width:420px; aspect-ratio:1; border-radius:50%; border:1px solid rgba(172,205,236,.18); box-shadow:0 0 0 60px rgba(172,205,236,.03), 0 0 0 120px rgba(172,205,236,.025); pointer-events:none}
.consult__intro{display:flex; flex-direction:column; gap:var(--space-4); min-width:0; position:relative; z-index:1}
.consult__intro p{margin:0; color:var(--c-text); max-width:42ch}
.consult__hotlines{display:flex; flex-direction:column; gap:var(--space-3); margin-top:var(--space-3)}
.hotline{display:flex; gap:12px; align-items:center}
.hotline__icon{width:40px; height:40px; border-radius:12px; display:grid; place-items:center; background:rgba(172,205,236,.12); color:var(--pd-blue-3); flex-shrink:0}
.hotline__icon svg{width:18px; height:18px}
.hotline__city{font-size:12px; color:var(--c-text-muted); letter-spacing:.04em}
.hotline__num{font-size:16px; font-weight:var(--fw-bold); color:var(--c-heading); font-variant-numeric:tabular-nums; user-select:all}
.form{display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:var(--space-4); position:relative; z-index:1}
.form__field{display:flex; flex-direction:column; gap:6px; min-width:0}
.form__field--full{grid-column:1/-1}
.form__label{font-size:12px; font-weight:var(--fw-semibold); letter-spacing:.04em; color:var(--c-text)}
.form__label span{color:var(--pd-blue-3)}
.form__control{
  font:inherit; font-size:14px; color:var(--c-heading); width:100%;
  background:var(--c-input-bg); border:1px solid var(--c-glass-border); border-radius:var(--radius-md);
  padding:13px 16px; transition:border-color .2s, box-shadow .2s, background-color .2s;
}
.form__control::placeholder{color:var(--c-text-muted)}
.form__control:focus{outline:none; border-color:var(--pd-blue-3); box-shadow:0 0 0 4px rgba(172,205,236,.15)}
.form__control:user-invalid{border-color:#EA4535}
textarea.form__control{min-height:110px; resize:vertical}
select.form__control{appearance:none; background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 10 10'%3E%3Cpath d='M2 3.5l3 3 3-3' fill='none' stroke='%23ACCDEC' stroke-width='1.5'/%3E%3C/svg%3E"); background-repeat:no-repeat; background-position:right 16px center; background-size:12px; padding-right:40px}
select.form__control option{color:#081227}
.form__actions{grid-column:1/-1; display:flex; align-items:center; gap:var(--space-4); flex-wrap:wrap}
.form__status{font-size:13px; color:var(--pd-blue-3)}

/* =========================================================
   SECTION: FOOTER  (.site-footer) — luôn nền tối
   ========================================================= */
.site-footer{background:var(--pd-navy-900); color:var(--c-text); padding-block:var(--space-8) var(--space-9)}
.site-footer__grid{display:grid; grid-template-columns:minmax(0,1.2fr) minmax(0,.8fr) minmax(0,1.4fr); gap:var(--space-7)}
.site-footer__brand{display:flex; flex-direction:column; gap:var(--space-4); min-width:0}
.site-footer__brand img{height:64px; width:auto; align-self:flex-start}
.site-footer__tagline{margin:0; font-size:var(--fs-sm); font-weight:var(--fw-semibold); color:var(--c-heading); text-transform:uppercase; letter-spacing:.06em; line-height:1.6}
.site-footer__tagline span{display:block; font-weight:var(--fw-regular); text-transform:none; letter-spacing:0; color:var(--c-text-muted)}
.socials{display:flex; gap:10px}
.socials a{width:40px; height:40px; border-radius:50%; display:grid; place-items:center; border:1px solid var(--c-line); color:var(--pd-blue-4); transition:background-color .2s, transform .2s}
.socials a:hover{background:var(--pd-blue-1); transform:translateY(-2px)}
.socials svg{width:18px; height:18px}
.socials .zalo{font-size:10.5px; font-weight:var(--fw-xbold); letter-spacing:.02em}
.site-footer__col h3{margin:0 0 var(--space-4); font-size:12px; letter-spacing:.14em; text-transform:uppercase; color:var(--c-text-muted); font-weight:var(--fw-semibold)}
.site-footer__links{list-style:none; margin:0; padding:0; display:flex; flex-direction:column; gap:10px}
.site-footer__links a:hover{color:var(--c-heading)}
.offices{display:flex; flex-direction:column; gap:var(--space-5)}
.office__city{font-size:var(--fs-sm); font-weight:var(--fw-bold); color:var(--c-heading); margin-bottom:6px}
.office__row{display:flex; gap:10px; align-items:flex-start; font-size:13.5px; color:var(--c-text); line-height:1.55}
.office__row svg{width:15px; height:15px; flex-shrink:0; margin-top:3px; color:var(--pd-blue-3)}
.office__row + .office__row{margin-top:6px}
.site-footer__bottom{margin-top:var(--space-7); padding-top:var(--space-5); border-top:1px solid var(--c-line); display:flex; justify-content:space-between; flex-wrap:wrap; gap:var(--space-3); font-size:12.5px; color:var(--c-text-muted)}

/* Prototype review bar */
.proto-bar{position:fixed; z-index:70; left:50%; transform:translateX(-50%); bottom:calc(env(safe-area-inset-bottom,0px) + 16px); display:flex; align-items:center; gap:12px; max-width:calc(100% - 32px); padding:8px 8px 8px 16px; border-radius:var(--radius-pill); background:var(--c-header-bg); border:1px solid var(--c-glass-border); -webkit-backdrop-filter:blur(14px); backdrop-filter:blur(14px); font-size:12px; color:var(--c-text); box-shadow:0 12px 30px -14px rgba(0,0,0,.45)}
.proto-bar strong{color:var(--c-heading)}
.proto-bar__seg{display:flex; border:1px solid var(--c-line); border-radius:var(--radius-pill); padding:3px}
.proto-bar__seg button{all:unset; cursor:pointer; padding:6px 12px; border-radius:var(--radius-pill); font-weight:var(--fw-semibold); color:var(--c-text-muted)}
.proto-bar__seg button[aria-pressed="true"]{background:var(--c-btn-bg); color:var(--c-btn-fg)}

/* Reveal (visible at rest; JS adds .is-pending only when it can animate) */
.reveal{transition:opacity .9s var(--ease), transform .9s var(--ease)}
.reveal.is-pending{opacity:0; transform:translateY(22px)}

@keyframes drip{0%{transform:scaleY(0); transform-origin:top}50%{transform:scaleY(1); transform-origin:top}51%{transform-origin:bottom}100%{transform:scaleY(0); transform-origin:bottom}}
@keyframes shimmer{to{background-position:-220% 0}}
@keyframes charIn{from{text-shadow:0 0 18px rgba(255,255,255,.9)}to{text-shadow:none}}
@keyframes blink{50%{opacity:0}}
@keyframes ping{0%{box-shadow:0 0 0 0 rgba(172,205,236,.6)}100%{box-shadow:0 0 0 10px rgba(172,205,236,0)}}
@keyframes gridDrift{to{background-position:64px 64px}}
@keyframes pulse{0%{transform:scale(.6); opacity:1}100%{transform:scale(2.4); opacity:0}}

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width:1279px){ .hud{display:none} }
@media (max-width:1080px){
  .site-header__nav{display:none}
  .site-header__burger{display:grid}
  .site-header__inner{justify-content:space-between}
  .site-header__actions .btn{display:none}
  .site-footer__grid{grid-template-columns:1fr 1fr}
  .site-footer__brand{grid-column:1/-1}
}
@media (max-width:900px){
  .about__grid{grid-template-columns:1fr}
  .about__map{max-width:340px}
  .news__grid{grid-template-columns:1fr; max-width:520px; margin-inline:auto}
  .consult__panel{grid-template-columns:1fr}
  .hero__visual{aspect-ratio:1.25/1}
}
@media (max-width:560px){
  :root{--header-h:64px}
  .site-header__logo img{height:38px}
  .lang-switch{display:none}
  .hero__cta .btn{flex:1 1 100%}
  .hero__ticker{font-size:10.5px; letter-spacing:.12em}
  .hero__frame{display:none}
  .hero__visual{aspect-ratio:.95/1}
  .pod__label{font-size:9.5px; padding:2px 7px}
  .stats{grid-template-columns:1fr; gap:var(--space-4)}
  .stat{flex-direction:row; align-items:baseline; gap:var(--space-4)}
  .stat__num{min-width:4.2ch}
  .form{grid-template-columns:1fr}
  .site-footer__grid{grid-template-columns:1fr}
  .proto-bar__label{display:none}
}
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{animation:none!important; transition:none!important}
  html{scroll-behavior:auto}
}

/* =========================================================
   SHARED: inquiry button, drawer, toast
   ========================================================= */
.icon-btn{position:relative}
.icon-btn__badge{position:absolute; top:-4px; right:-4px; min-width:18px; height:18px; padding:0 5px; border-radius:var(--radius-pill); background:var(--pd-blue-1); color:#FFFFFF; font-size:10.5px; font-weight:var(--fw-bold); display:grid; place-items:center; border:2px solid var(--c-bg); font-variant-numeric:tabular-nums}
.icon-btn__badge[hidden]{display:none}
body.no-scroll{overflow:hidden}
.drawer{position:fixed; inset:0; z-index:90}
.drawer[hidden]{display:none}
.drawer__scrim{position:absolute; inset:0; background:rgba(4,10,24,.55); opacity:0; transition:opacity .28s var(--ease)}
.drawer__panel{position:absolute; top:0; right:0; bottom:0; width:min(440px,100%); background:var(--c-bg); color:var(--c-text); display:flex; flex-direction:column; transform:translateX(100%); transition:transform .32s var(--ease); box-shadow:-20px 0 60px -20px rgba(0,0,0,.5); padding-top:env(safe-area-inset-top,0px)}
.drawer.is-open .drawer__scrim{opacity:1}
.drawer.is-open .drawer__panel{transform:none}
.drawer__head{display:flex; justify-content:space-between; align-items:flex-start; gap:12px; padding:var(--space-5); border-bottom:1px solid var(--c-line)}
.drawer__head h2{margin:4px 0 0; font-size:var(--fs-md); color:var(--c-heading)}
.drawer__body{flex:1; overflow:auto; padding:var(--space-5); display:flex; flex-direction:column; gap:var(--space-5); padding-bottom:calc(var(--space-6) + env(safe-area-inset-bottom,0px))}
.inq-list{list-style:none; margin:0; padding:0; display:flex; flex-direction:column; gap:10px}
.inq-list[hidden]{display:none}
.inq-item{display:flex; align-items:center; gap:12px; padding:10px; border:1px solid var(--c-line); border-radius:var(--radius-md); background:var(--c-surface)}
.inq-item__img{width:52px; height:52px; border-radius:10px; overflow:hidden; background:#FFFFFF; display:grid; place-items:center; flex-shrink:0; border:1px solid var(--c-line)}
.inq-item__img img{width:100%; height:100%; object-fit:contain}
.inq-item__txt{flex:1; min-width:0; display:flex; flex-direction:column}
.inq-item__txt b{font-size:13.5px; color:var(--c-heading); white-space:nowrap; overflow:hidden; text-overflow:ellipsis}
.inq-item__txt small{font-size:12px; color:var(--c-text-muted)}
.mono{font-weight:var(--fw-xbold); color:var(--pd-blue-1); font-size:15px; letter-spacing:.02em; text-transform:uppercase}
.inq-empty,.inq-done{display:flex; flex-direction:column; align-items:center; text-align:center; gap:12px; padding:var(--space-6) var(--space-4); color:var(--c-text-muted)}
.inq-empty[hidden],.inq-done[hidden],.inq-form[hidden]{display:none}
.inq-empty svg,.inq-done svg{width:44px; height:44px; color:var(--c-accent)}
.inq-done h3{margin:0; color:var(--c-heading); font-size:17px}
.inq-empty p,.inq-done p{margin:0}
.inq-form{display:flex; flex-direction:column; gap:var(--space-4); padding-top:var(--space-4); border-top:1px solid var(--c-line)}
.inq-form .form__control{color:var(--c-heading); background:var(--c-input-bg); border-color:var(--c-line)}
.inq-form .form__label{color:var(--c-text)}
.inq-hint{margin:0; font-size:12px; color:var(--c-text-muted)}
.toast{position:fixed; left:50%; bottom:calc(env(safe-area-inset-bottom,0px) + 84px); transform:translate(-50%,20px); z-index:95; max-width:calc(100% - 32px); padding:12px 18px; border-radius:var(--radius-md); background:var(--pd-blue-1); color:#FFFFFF; font-size:13.5px; font-weight:var(--fw-medium); box-shadow:0 14px 30px -12px rgba(0,0,0,.5); opacity:0; pointer-events:none; transition:opacity .25s, transform .25s var(--ease)}
.toast.is-on{opacity:1; transform:translate(-50%,0)}
.site-header__link[aria-current="page"]{background:var(--c-accent-soft); color:var(--c-heading)}

/* Brand cards (home) — extra meta */
.brand-card__meta{display:flex; flex-wrap:wrap; gap:6px}
.chip-sm{display:inline-flex; align-items:center; gap:6px; font-size:11px; font-weight:var(--fw-semibold); color:var(--c-text-muted); border:1px solid var(--c-line); border-radius:var(--radius-pill); padding:3px 9px}
.chip-sm--prio{color:var(--pd-blue-1); background:var(--pd-blue-4); border-color:transparent}
.brand-card__mono{width:120px; height:120px; border-radius:50%; display:grid; place-items:center; background:linear-gradient(140deg,var(--pd-blue-1),var(--pd-blue-2)); color:#FFFFFF; font-size:30px; font-weight:var(--fw-xbold); letter-spacing:.02em; box-shadow:0 16px 30px -14px rgba(38,70,130,.7)}
.brand-card__foot{display:flex; justify-content:space-between; align-items:center; gap:10px}
.brand-card__count{font-size:12px; color:var(--c-text-muted)}

/* =========================================================
   BRAND BACKGROUND CHAIN — dùng #264682 làm nền thương hiệu,
   các section nối nhau bằng gradient (không có vạch phân cách).
   sec-0: điểm nối sau Hero · sec-1: nền chính · sec-2: nền tối hơn (xen kẽ)
   ========================================================= */
:root{ --sec-0:#FFFFFF; --sec-1:#F2F6FC; --sec-2:#E4EDF8; --foot:#081227; --c-on:var(--pd-blue-1) }
@media (prefers-color-scheme: dark){ :root:not([data-theme="light"]){ --sec-0:#0C1B3D; --sec-1:#264682; --sec-2:#1A3466; --c-on:#0C1B3D } }
:root[data-theme="dark"]{ --sec-0:#0C1B3D; --sec-1:#264682; --sec-2:#1A3466; --c-on:#0C1B3D }

.hero::after{content:""; position:absolute; left:0; right:0; bottom:0; height:180px; z-index:-1; pointer-events:none; background:linear-gradient(180deg, rgba(0,0,0,0), var(--sec-0))}
#brands{background:linear-gradient(180deg, var(--sec-0) 0%, var(--sec-1) 75%)}
#about{background:linear-gradient(180deg, var(--sec-1), var(--sec-2))}
#news{background:linear-gradient(180deg, var(--sec-2), var(--sec-1))}
#consult{background:linear-gradient(180deg, var(--sec-1), var(--sec-2))}
.site-footer{position:relative; background:var(--foot)}
.site-footer::before{content:""; position:absolute; left:0; right:0; top:-200px; height:200px; pointer-events:none; background:linear-gradient(180deg, rgba(8,18,39,0), var(--foot))}
/* Panel tư vấn: tối hơn nền để không trùng màu */
.consult__panel{background:linear-gradient(140deg, #16305F, #0A1838); border:1px solid rgba(172,205,236,.16)}

/* =========================================================
   HEADER — submenu "Dành cho bác sĩ" (hover / focus / click)
   ========================================================= */
.site-header__menu .has-sub{position:relative}
.subnav{position:absolute; left:50%; top:calc(100% + 10px); z-index:70; width:372px; padding:8px; border-radius:var(--radius-lg); background:var(--c-surface); border:1px solid var(--c-line); box-shadow:0 24px 50px -22px rgba(8,18,39,.55); opacity:0; visibility:hidden; transform:translate(-50%,6px); transition:opacity .2s var(--ease), transform .2s var(--ease), visibility 0s .2s}
.subnav::before{content:""; position:absolute; left:0; right:0; top:-14px; height:14px} /* cầu nối hover */
.has-sub:hover .subnav,.has-sub:focus-within .subnav,.has-sub.is-open .subnav{opacity:1; visibility:visible; transform:translate(-50%,0); transition-delay:0s}
.has-sub:hover > .site-header__link svg,.has-sub.is-open > .site-header__link svg{transform:rotate(180deg)}
.site-header__link svg{transition:transform .2s var(--ease)}
.subnav__item{display:flex; gap:12px; align-items:flex-start; padding:12px; border-radius:12px; color:var(--c-text); transition:background-color .2s}
.subnav__item:hover,.subnav__item:focus-visible,.subnav__item[aria-current="page"]{background:var(--c-accent-soft)}
.subnav__item b{display:block; font-size:14px; color:var(--c-heading); font-weight:var(--fw-semibold)}
.subnav__item small{display:block; margin-top:2px; font-size:12.5px; color:var(--c-text-muted)}
.subnav__ic{flex-shrink:0; width:38px; height:38px; border-radius:10px; display:grid; place-items:center; background:var(--c-accent-soft); color:var(--c-accent)}
.subnav__ic svg{width:20px; height:20px}
.mobile-nav__sub{list-style:none; margin:0; padding:0 0 8px 14px; border-bottom:1px solid var(--c-line)}
.mobile-nav__list .mobile-nav__sub a{padding:10px 0; font-size:var(--fs-sm); font-weight:var(--fw-medium); color:var(--c-text); border-bottom:0}
.mobile-nav__list li:has(> .mobile-nav__sub) > a{border-bottom:0}
/* Bản đồ khu vực (đất liền các nước lân cận, màu xám) — mờ dần ở mép trên/dưới section */
#about::after,.map-band::after{content:""; position:absolute; inset:0; z-index:0; pointer-events:none;
  background:linear-gradient(180deg, var(--sec-1) 0, transparent 110px, transparent calc(100% - 140px), var(--sec-2) 100%)}
.map-pin__label{paint-order:stroke; stroke:var(--c-map-halo,#FFFFFF); stroke-width:4px; stroke-linejoin:round}
:root[data-theme="dark"] .map-pin__label,.surface-dark .map-pin__label{--c-map-halo:#0C1B3D}
@media (prefers-color-scheme:dark){ :root:not([data-theme="light"]) .map-pin__label{--c-map-halo:#0C1B3D} }
.subnav__item.is-soon{opacity:.6; cursor:default}
.subnav__item.is-soon:hover{background:transparent}
.soon-tag{font-style:normal; font-size:10px; font-weight:var(--fw-bold); letter-spacing:.06em; text-transform:uppercase; color:var(--c-text-muted); border:1px dashed var(--c-line); border-radius:var(--radius-pill); padding:1px 6px; margin-left:4px; vertical-align:middle}
.map-band{background:linear-gradient(180deg, var(--sec-1), var(--sec-2))}
/* Chế độ sáng: hero tối → section trắng. Chuyển qua ánh xanh nhạt (như quầng sáng chân trời)
   thay vì đen → trắng trực tiếp (bị xám đục). */
:root[data-theme="light"] .hero::after{height:240px; background:linear-gradient(180deg, rgba(213,230,245,0) 0%, rgba(172,205,236,.28) 30%, rgba(213,230,245,.78) 62%, #F7FAFE 86%, var(--sec-0) 100%)}
:root[data-theme="light"] .hero__scroll{color:var(--pd-blue-1)}
@media (prefers-color-scheme:light){
  :root:not([data-theme="dark"]) .hero::after{height:240px; background:linear-gradient(180deg, rgba(213,230,245,0) 0%, rgba(172,205,236,.28) 30%, rgba(213,230,245,.78) 62%, #F7FAFE 86%, var(--sec-0) 100%)}
  :root:not([data-theme="dark"]) .hero__scroll{color:var(--pd-blue-1)}
}
/* Menu mobile: cuộn được khi dài; mục có trang cấp 2 thu gọn bằng <details> (chạm để mở) */
.mobile-nav{overflow-y:auto; overscroll-behavior:contain; -webkit-overflow-scrolling:touch}
.mobile-nav > .btn{flex-shrink:0}
.mn-group summary{list-style:none; cursor:pointer; display:flex; justify-content:space-between; align-items:center; padding:16px 0; font-size:var(--fs-md); font-weight:var(--fw-semibold); color:var(--c-heading); border-bottom:1px solid var(--c-line)}
.mn-group summary::-webkit-details-marker{display:none}
.mn-chev{width:14px; height:14px; opacity:.7; transition:transform .2s var(--ease)}
.mn-group[open] .mn-chev{transform:rotate(180deg)}
.mn-group[open] summary{border-bottom-color:transparent}
.mn-group .mobile-nav__sub{padding-top:0}
.mobile-nav{padding-bottom:calc(env(safe-area-inset-bottom,0px) + 96px)} /* chừa chỗ cho thanh prototype ở đáy */

/* ---------- Nút liên hệ nổi ---------- */
.fab{position:fixed; z-index:55; right:calc(env(safe-area-inset-right,0px) + 20px); bottom:calc(env(safe-area-inset-bottom,0px) + 20px); display:flex; flex-direction:column; align-items:flex-end; gap:10px; transition:bottom .3s var(--ease)}
.fab__btn{position:relative; display:grid; place-items:center; width:52px; height:52px; border-radius:50%; color:#FFF; text-decoration:none; box-shadow:0 10px 24px -10px rgba(4,10,24,.55), 0 0 0 3px rgba(255,255,255,.9); transition:transform .2s var(--ease)}
.fab__btn:hover{transform:translateY(-2px) scale(1.04)}
.fab__btn:focus-visible{outline:2px solid var(--c-accent); outline-offset:4px}
.fab__btn svg{width:22px; height:22px}
.fab__btn--zalo{background:#0068FF}
.fab__zalo{font-weight:800; font-size:12.5px; letter-spacing:-.02em}
.fab__btn--fb{background:#1877F2}
.fab__btn--tel{background:var(--pd-blue-1,#264682)}
.fab__btn--tel::before{content:""; position:absolute; inset:0; border-radius:50%; border:2px solid #547DBF; animation:fabPulse 2s infinite; pointer-events:none}
@keyframes fabPulse{0%{transform:scale(1); opacity:.9}100%{transform:scale(1.6); opacity:0}}
.fab__tip{position:absolute; right:calc(100% + 10px); top:50%; transform:translate(6px,-50%); white-space:nowrap; padding:5px 10px; border-radius:var(--radius-pill); background:var(--pd-navy-800,#0b1630); color:#FFF; font-size:12px; font-weight:600; opacity:0; pointer-events:none; transition:opacity .2s, transform .2s}
.fab__btn:hover .fab__tip,.fab__btn:focus-visible .fab__tip{opacity:1; transform:translate(0,-50%)}
.fab__pop{position:absolute; right:0; bottom:calc(100% + 12px); width:320px; padding:20px; border-radius:var(--radius-lg); background:var(--c-bg); border:1px solid var(--c-line); box-shadow:0 24px 50px -20px rgba(4,10,24,.5); color:var(--c-text)}
.fab__pop small{display:block; font-size:12px; color:var(--c-text-muted)}
.fab__num{display:block; margin:4px 0 14px; font-size:24px; font-weight:800; color:var(--c-heading); letter-spacing:.01em}
.fab__row{display:grid; gap:8px}
.fab__row .btn{width:100%; justify-content:center}
.fab__cb{margin-top:16px; padding-top:14px; border-top:1px solid var(--c-line)}
.fab__cbrow{display:flex; gap:6px; margin:8px 0}
.fab__cbrow input{flex:1; min-width:0; padding:10px 12px; border-radius:var(--radius-md); border:1px solid var(--c-line); background:var(--c-bg); color:var(--c-text); font:inherit; font-size:13px}
.fab__cbrow .btn{padding-inline:12px; font-size:12.5px; white-space:nowrap}
.fab__consent{display:flex; gap:6px; align-items:center; font-size:11.5px; color:var(--c-text-muted)}
.fab__x{all:unset; position:absolute; top:10px; right:12px; cursor:pointer; font-size:22px; line-height:1; color:var(--c-text-muted)}
body.no-scroll .fab{display:none}
body:has(.cmpbar.is-on) .fab{bottom:calc(env(safe-area-inset-bottom,0px) + 150px)}
@media (max-width:640px){
  .fab{right:calc(env(safe-area-inset-right,0px) + 14px); gap:8px}
  .fab__btn{width:46px; height:46px}
  .proto-bar ~ .fab{bottom:calc(env(safe-area-inset-bottom,0px) + 76px)}
}
@media (prefers-reduced-motion:reduce){.fab__btn--tel::before{animation:none}}
@media print{.fab{display:none}}

/* Menu cấp 1 luôn 1 dòng: thu gọn khoảng cách ở màn hình desktop hẹp */
@media (max-width:1320px){ .site-header__inner{gap:var(--space-4)} .site-header__link{padding:10px 10px} .site-header__actions{gap:var(--space-2)} }
@media (max-width:1180px){ .site-header__link{padding:8px 8px; font-size:13px} }
.site-header__actions{flex:none} .site-header__actions .btn{white-space:nowrap}
@media (max-width:1180px){ .site-header__actions .btn{padding-inline:16px} }