/* ═══════════════════════════════════════════════════════════════
   HAG SOLAR — Design tokens
   Hướng thiết kế: "Solar Cell Industrial"
   ═══════════════════════════════════════════════════════════════ */
:root{
  /* — Nền tối — */
  --carbon:#0B0C0D;
  --graphite:#141618;
  --steel:#23262A;
  --steel-soft:#383C42;

  /* — Vàng (điểm nhấn) — */
  --solar:#FFC400;
  --solar-hi:#FFD84D;
  --solar-deep:#E09400;
  --solar-wash:rgba(255,196,0,.08);

  /* — Nền sáng — */
  --paper:#F4F5F3;
  --paper-2:#EAECE8;
  --card:#FFFFFF;

  /* — Chữ — */
  --ink:#0B0C0D;
  --ink-2:#4A5057;
  --ink-3:#858C94;
  --snow:#F7F8F7;
  --snow-2:#A3AAB2;

  /* — Phụ (dùng ≤5%) — */
  --volt:#2BD9C4;

  /* — Font — */
  --f-display:'Archivo','Arial Black',system-ui,sans-serif;
  --f-body:'Be Vietnam Pro',system-ui,-apple-system,'Segoe UI',sans-serif;
  --f-mono:'IBM Plex Mono','SFMono-Regular',Consolas,monospace;

  /* — Hình học — */
  --chamfer:14px;
  --r:2px;
  --header-h:76px;
  --maxw:1280px;
  --pad:clamp(20px,5vw,56px);

  /* — Chuyển động — */
  --ease:cubic-bezier(.2,.7,.3,1);
  --t:.35s var(--ease);
}

/* ── Reset ────────────────────────────────────────────────────── */
*,*::before,*::after{box-sizing:border-box}
*{margin:0;padding:0}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:var(--header-h)}
/* Thu cả trang về 80% trên máy tính/laptop (điện thoại giữ 100% cho dễ đọc).
   --z dùng để bù các kích thước theo chiều cao màn hình (vh) cho khỏi thấp đi theo. */
:root{--z:1}
@media (min-width:1024px){
  :root{--z:.8}
  html{zoom:.8}
}
body{
  font-family:var(--f-body);
  font-size:clamp(15px,.4vw + 14px,16px);
  line-height:1.65;
  color:var(--ink-2);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img,svg{display:block;max-width:100%}
button,input{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
a{color:inherit;text-decoration:none}
ul{list-style:none}
:focus-visible{outline:2px solid var(--solar);outline-offset:3px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

/* ── Lớp tiện ích chung ───────────────────────────────────────── */
.wrap{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:var(--pad)}

/* Chamfer 45° — gợi khung nhôm tấm pin */
.chamfer{clip-path:polygon(0 0,calc(100% - var(--chamfer)) 0,100% var(--chamfer),100% 100%,0 100%)}
.chamfer-bl{clip-path:polygon(0 0,100% 0,100% 100%,var(--chamfer) 100%,0 calc(100% - var(--chamfer)))}

/* MOTIF: lưới cell tấm pin — nền các section tối */
.cell-grid{position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(255,196,0,.07) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,196,0,.07) 1px,transparent 1px);
  background-size:64px 64px;
}
/* MOTIF: busbar — thanh dẫn dọc mảnh hơn, chồng lên lưới */
.busbar{position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:16px 100%;
}
.mask-fade{-webkit-mask-image:radial-gradient(120% 90% at 50% 0%,#000 20%,transparent 78%);
                   mask-image:radial-gradient(120% 90% at 50% 0%,#000 20%,transparent 78%)}

/* Nhãn section — dùng chung toàn trang */
.eyebrow{
  display:inline-flex;align-items:center;gap:14px;
  font-family:var(--f-mono);font-size:clamp(13px,1.1vw,15px);font-weight:700;
  letter-spacing:.12em;text-transform:uppercase;color:var(--solar);
}
.eyebrow::before{content:"";width:32px;height:3px;background:var(--solar);flex:none}
.eyebrow .idx{color:inherit}

/* Tiêu đề */
h1,h2,h3{font-family:var(--f-display);font-weight:900;color:var(--ink);line-height:1.05;
  font-variation-settings:'wdth' 118}
h1{font-size:clamp(38px,6.2vw,66px);line-height:.98;letter-spacing:-.03em;text-transform:uppercase}
h2{font-size:clamp(28px,3.4vw,40px);letter-spacing:-.02em;text-transform:uppercase}
h3{font-size:clamp(19px,1.6vw,22px);font-weight:800;letter-spacing:-.01em;
   font-variation-settings:'wdth' 108}

/* Nút */
.btn{
  --bg:var(--solar);--fg:var(--carbon);--bd:var(--solar);
  position:relative;display:inline-flex;align-items:center;justify-content:center;gap:12px;
  padding:17px 26px;background:var(--bg);color:var(--fg);
  border:1.5px solid var(--bd);border-radius:var(--r);
  font-family:var(--f-display);font-weight:800;font-size:14px;
  font-variation-settings:'wdth' 108;letter-spacing:.04em;text-transform:uppercase;
  transition:background var(--t),color var(--t),border-color var(--t),transform var(--t);
  overflow:hidden;
}
.btn .arw{transition:transform var(--t)}
.btn:hover{transform:translateY(-2px)}
.btn:hover .arw{transform:translateX(5px)}
.btn--solid:hover{--bg:var(--solar-hi);--bd:var(--solar-hi)}
.btn--ghost{--bg:transparent;--fg:var(--snow);--bd:var(--steel-soft)}
.btn--ghost:hover{--bd:var(--solar);--fg:var(--solar)}

/* ═══════════════════════════════════════════════════════════════
   01 · HEADER
   ═══════════════════════════════════════════════════════════════ */
.header{
  position:fixed;top:0;left:0;right:0;z-index:100;height:var(--header-h);
  background:rgba(11,12,13,.82);backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid rgba(255,196,0,.14);
  transition:height .3s var(--ease),background .3s var(--ease);
}
.header.is-scrolled{height:64px;background:rgba(11,12,13,.95)}
.header__inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:24px}

/* — Logo: ô lưới 2×2 kiểu cell tấm pin — */
.logo{display:flex;align-items:center;gap:11px;flex:none}
.logo__mark{width:34px;height:34px;flex:none;display:grid;grid-template-columns:1fr 1fr;gap:2.5px;
  padding:3px;background:var(--solar);border-radius:var(--r);
  transition:transform .5s var(--ease)}
.logo__mark i{background:var(--carbon);border-radius:1px}
.logo__mark i:nth-child(2){background:rgba(11,12,13,.55)}
.logo__mark i:nth-child(3){background:rgba(11,12,13,.55)}
.logo:hover .logo__mark{transform:rotate(-90deg)}
.logo__text{font-family:var(--f-display);font-weight:900;font-variation-settings:'wdth' 122;
  font-size:19px;letter-spacing:-.01em;line-height:1;color:var(--snow);text-transform:uppercase}
.logo__text b{color:var(--solar);font-weight:900}

/* — Nav — */
.nav{display:flex;align-items:center;gap:4px}
.nav__item{position:relative}
.nav__link{
  position:relative;display:inline-flex;align-items:center;gap:6px;
  padding:9px 14px;font-size:14.5px;font-weight:500;color:var(--snow-2);
  transition:color var(--t);
}
.nav__link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;background:var(--solar);
  transform:scaleX(0);transform-origin:left;transition:transform .3s var(--ease);
}
.nav__link:hover,.nav__link[aria-current="page"]{color:var(--snow)}
.nav__link:hover::after,.nav__link[aria-current="page"]::after{transform:scaleX(1)}
.nav__link .chev{width:11px;height:11px;flex:none;transition:transform var(--t)}
.nav__item:hover .chev,.nav__item:focus-within .chev{transform:rotate(180deg)}

/* — Menu con: Giải pháp → 3 đối tượng — */
.subnav{
  position:absolute;top:100%;left:-10px;z-index:5;width:max-content;min-width:332px;
  /* padding = cầu nối vô hình: vùng trong suốt nhưng vẫn nhận chuột,
     nên rê từ link xuống panel không bị hở. KHÔNG dùng margin. */
  padding:16px 10px 20px;
  opacity:0;visibility:hidden;transform:translateY(-8px);pointer-events:none;
  transition:opacity .22s var(--ease) .15s,transform .22s var(--ease) .15s,visibility .22s .15s;
}
/* clip-path đặt ở lớp trong, không cắt mất vùng cầu nối.
   Panel dùng NỀN SÁNG để tách hẳn khỏi header/hero đen — như một
   phiếu thông số dán đè lên tấm nền tối. */
.subnav__inner{
  --chamfer:20px;position:relative;padding:7px;background:var(--paper);
  border-top:3px solid var(--solar);
  box-shadow:0 34px 64px -24px rgba(0,0,0,.75),0 4px 14px -6px rgba(0,0,0,.5);
  clip-path:polygon(0 0,calc(100% - var(--chamfer)) 0,100% var(--chamfer),100% 100%,0 100%);
}
/* lưới cell rất mờ cho panel đỡ phẳng */
.subnav__inner::before{content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(11,12,13,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(11,12,13,.05) 1px,transparent 1px);
  background-size:34px 34px}
.nav__item:hover .subnav,.nav__item:focus-within .subnav,.subnav:hover{
  opacity:1;visibility:visible;transform:none;pointer-events:auto;
  transition-delay:0s;   /* mở ngay, chỉ trễ khi đóng */
}
.subnav a{
  position:relative;display:block;padding:12px 15px;border-left:2px solid transparent;
  transition:background var(--t),border-color var(--t),padding-left var(--t);
}
.subnav a + a{box-shadow:0 -1px 0 rgba(11,12,13,.09)}
.subnav a:hover,.subnav a:focus-visible{
  background:var(--card);border-left-color:var(--solar);padding-left:19px}
.subnav b{display:block;font-family:var(--f-display);font-weight:800;
  font-variation-settings:'wdth' 106;font-size:15px;color:var(--ink);letter-spacing:-.01em}
.subnav small{display:block;margin-top:2px;font-size:12.5px;color:var(--ink-3);line-height:1.45;
  white-space:nowrap}  /* panel tự nới theo dòng dài nhất, không xuống hàng khi rê chuột */

/* — Nút gọi — */
.call{
  display:inline-flex;align-items:center;gap:11px;flex:none;
  padding:12px 20px;background:var(--solar);color:var(--carbon);border-radius:var(--r);
  transition:background var(--t),box-shadow var(--t);
  box-shadow:0 0 0 0 rgba(255,196,0,.4);
}
.call:hover{background:var(--solar-hi);box-shadow:0 8px 24px -8px rgba(255,196,0,.7)}
.call svg{width:17px;height:17px;flex:none}
.call__meta{display:flex;flex-direction:column;line-height:1.15}
.call__meta small{font-family:var(--f-mono);font-size:9.5px;font-weight:500;
  letter-spacing:.12em;text-transform:uppercase;opacity:.62}
.call__meta strong{font-family:var(--f-mono);font-size:14.5px;font-weight:600;letter-spacing:-.01em}

/* — Hamburger — */
.burger{display:none;width:44px;height:44px;flex:none;
  border:1px solid var(--steel-soft);border-radius:var(--r);
  align-items:center;justify-content:center;transition:border-color var(--t)}
.burger:hover{border-color:var(--solar)}
.burger i{display:block;width:18px;height:2px;background:var(--snow);position:relative;
  transition:background .2s var(--ease)}
.burger i::before,.burger i::after{content:"";position:absolute;left:0;width:18px;height:2px;
  background:var(--snow);transition:transform .3s var(--ease)}
.burger i::before{top:-6px}.burger i::after{top:6px}
.nav-open .burger i{background:transparent}
.nav-open .burger i::before{transform:translateY(6px) rotate(45deg)}
.nav-open .burger i::after{transform:translateY(-6px) rotate(-45deg)}

/* — Menu mobile toàn màn hình — */
.drawer{
  position:fixed;inset:0;z-index:99;background:var(--carbon);
  padding:calc(var(--header-h) + 32px) var(--pad) 40px;
  display:flex;flex-direction:column;justify-content:center;
  opacity:0;visibility:hidden;transform:translateY(-12px);
  transition:opacity .35s var(--ease),transform .35s var(--ease),visibility .35s;
}
.nav-open .drawer{opacity:1;visibility:visible;transform:none}
.drawer__list > li{border-bottom:1px solid var(--steel)}
.drawer__list a{
  display:flex;align-items:baseline;gap:16px;padding:18px 0;
  font-family:var(--f-display);font-weight:800;font-variation-settings:'wdth' 112;
  font-size:clamp(24px,7vw,32px);text-transform:uppercase;letter-spacing:-.02em;color:var(--snow);
  transition:color var(--t),padding-left var(--t);
}
.drawer__list a:hover{color:var(--solar);padding-left:8px}
.drawer__list .idx{font-family:var(--f-mono);font-size:12px;font-weight:600;color:var(--solar-deep)}
/* 3 đối tượng con của Giải pháp */
.drawer__sub{padding:0 0 18px 34px}
.drawer__sub a{padding:9px 0;font-family:var(--f-body);font-weight:500;font-size:15.5px;
  text-transform:none;letter-spacing:0;color:var(--snow-2);gap:10px}
.drawer__sub a::before{content:"";width:12px;height:2px;background:var(--solar-deep);flex:none;
  align-self:center}
.drawer__sub a:hover{color:var(--solar);padding-left:6px}
.drawer__foot{margin-top:32px;display:flex;flex-direction:column;gap:14px}
.drawer__foot .call{justify-content:center;padding:16px}

/* ═══════════════════════════════════════════════════════════════
   02 · HERO
   ═══════════════════════════════════════════════════════════════ */
.hero{
  position:relative;isolation:isolate;overflow:hidden;
  background:var(--carbon);color:var(--snow);
  padding-top:calc(var(--header-h) + clamp(48px,7vw,84px));
  padding-bottom:clamp(56px,7vw,88px);
}
/* Ánh sáng nền */
.hero__glow{position:absolute;z-index:-3;width:min(900px,110vw);aspect-ratio:1;
  top:-28%;right:-14%;border-radius:50%;
  background:radial-gradient(circle,rgba(255,196,0,.20),rgba(255,196,0,.05) 42%,transparent 68%);
  filter:blur(20px)}
/* MOTIF: tia nắng conic quay chậm */
.hero__rays{position:absolute;z-index:-2;width:min(1100px,130vw);aspect-ratio:1;
  top:-40%;right:-22%;border-radius:50%;opacity:.5;
  background:repeating-conic-gradient(from 0deg,
    rgba(255,196,0,.13) 0deg 4deg,transparent 4deg 17deg);
  -webkit-mask-image:radial-gradient(circle,#000 8%,rgba(0,0,0,.5) 40%,transparent 66%);
          mask-image:radial-gradient(circle,#000 8%,rgba(0,0,0,.5) 40%,transparent 66%);
  animation:spin 72s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
/* Dải sáng quét chéo 22° */
.hero__sweep{position:absolute;z-index:-2;inset:-20% -30%;
  background:linear-gradient(112deg,transparent 38%,rgba(255,216,77,.055) 48%,transparent 58%)}
.hero .cell-grid{z-index:-1;opacity:.85}

.hero__grid{
  display:grid;grid-template-columns:minmax(0,1.06fr) minmax(0,.94fr);
  gap:clamp(32px,5vw,72px);align-items:center;
}

/* — Cột nội dung — */
.hero__copy{max-width:660px}
.hero h1{color:var(--snow);margin:22px 0 0;font-size:clamp(32px,3.6vw,48px)}
.hero h1 em{display:block;font-style:normal;color:var(--solar);
  text-shadow:0 0 44px rgba(255,196,0,.35)}
.hero__rule{width:96px;height:3px;background:var(--solar);margin:26px 0 22px;
  box-shadow:0 0 20px rgba(255,196,0,.5)}
.hero__lead{font-size:clamp(15.5px,1.1vw,17px);color:var(--snow-2);max-width:52ch}
.hero__cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}

/* Dải cam kết */
.hero__trust{
  display:flex;flex-wrap:wrap;gap:10px 30px;margin-top:38px;padding-top:24px;
  border-top:1px solid var(--steel);
}
.hero__trust li{display:flex;align-items:center;gap:9px;
  font-family:var(--f-mono);font-size:12px;font-weight:500;letter-spacing:.06em;
  text-transform:uppercase;color:var(--snow-2)}
.hero__trust svg{width:14px;height:14px;flex:none;color:var(--solar)}

/* — Cột hình: TẤM PIN dựng bằng CSS — */
.hero__visual{position:relative;display:flex;justify-content:center;align-items:center;
  perspective:1400px}
.panel{
  --tiltX:16deg;--tiltY:-19deg;
  position:relative;width:min(100%,420px);aspect-ratio:11/14;
  transform:rotateX(var(--tiltX)) rotateY(var(--tiltY)) rotateZ(3deg);
  transform-style:preserve-3d;
  transition:transform .6s var(--ease);
  animation:float 7s ease-in-out infinite;
}
@keyframes float{0%,100%{translate:0 0}50%{translate:0 -14px}}
/* Khung nhôm */
.panel__frame{
  position:absolute;inset:0;padding:9px;border-radius:5px;
  background:linear-gradient(148deg,#9AA1A8,#5C6369 28%,#31363B 55%,#7C848B 82%,#454A50);
  box-shadow:
    0 46px 90px -32px rgba(0,0,0,.9),
    0 0 0 1px rgba(255,255,255,.09) inset,
    0 0 80px -20px rgba(255,196,0,.35);
}
/* Mặt cell */
.panel__cells{
  position:relative;height:100%;display:grid;
  grid-template-columns:repeat(6,1fr);grid-template-rows:repeat(10,1fr);
  gap:3px;padding:3px;background:#0A1622;border-radius:2px;overflow:hidden;
}
.panel__cells i{
  position:relative;border-radius:1px;
  background:linear-gradient(140deg,#173049,#0E2136 42%,#1D3A55 78%,#0B1A2B);
  box-shadow:inset 0 0 0 .5px rgba(120,190,255,.12);
}
/* busbar 2 sọc bạc trên mỗi cell */
.panel__cells i::after{
  content:"";position:absolute;inset:0;
  background:
    linear-gradient(90deg,transparent 30%,rgba(200,225,255,.30) 30.5%,rgba(200,225,255,.30) 32%,transparent 32.5%),
    linear-gradient(90deg,transparent 66%,rgba(200,225,255,.30) 66.5%,rgba(200,225,255,.30) 68%,transparent 68.5%);
}
/* Vệt phản chiếu ánh nắng chéo trên mặt pin */
.panel__gloss{
  position:absolute;inset:9px;border-radius:2px;pointer-events:none;
  background:linear-gradient(118deg,
    rgba(255,255,255,0) 26%,
    rgba(255,232,150,.30) 40%,
    rgba(255,255,255,.10) 47%,
    rgba(255,255,255,0) 60%);
  mix-blend-mode:screen;
}
/* Bóng đổ dưới tấm pin */
.panel__shadow{
  position:absolute;left:8%;right:8%;bottom:-9%;height:44px;border-radius:50%;
  background:radial-gradient(ellipse,rgba(0,0,0,.75),transparent 70%);
  filter:blur(14px);transform:translateZ(-60px);
}

/* — Thẻ dữ liệu nổi — */
.probe{
  position:absolute;z-index:2;background:rgba(20,22,24,.9);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  border:1px solid var(--steel-soft);border-left:2px solid var(--solar);
  padding:14px 18px;border-radius:var(--r);
  box-shadow:0 22px 50px -20px rgba(0,0,0,.9);
}
.probe--live{left:-4%;bottom:12%;animation:float 7s ease-in-out infinite .9s}
.probe--save{right:-2%;top:8%;animation:float 7s ease-in-out infinite .4s}
.probe__label{display:flex;align-items:center;gap:7px;
  font-family:var(--f-mono);font-size:10px;font-weight:600;letter-spacing:.14em;
  text-transform:uppercase;color:var(--snow-2)}
.dot{width:6px;height:6px;border-radius:50%;background:var(--volt);flex:none;
  box-shadow:0 0 0 0 rgba(43,217,196,.6);animation:pulse 2s ease-out infinite}
@keyframes pulse{70%{box-shadow:0 0 0 8px rgba(43,217,196,0)}100%{box-shadow:0 0 0 0 rgba(43,217,196,0)}}
.probe__val{font-family:var(--f-display);font-weight:900;font-variation-settings:'wdth' 112;
  font-size:26px;color:var(--snow);line-height:1.15;margin-top:5px;letter-spacing:-.02em}
.probe__val span{font-family:var(--f-mono);font-size:13px;font-weight:500;color:var(--solar);
  margin-left:4px;letter-spacing:0}
/* Biểu đồ cột mini */
.spark{display:flex;align-items:flex-end;gap:3px;height:26px;margin-top:9px}
.spark i{width:5px;background:var(--solar);border-radius:1px;opacity:.85;
  animation:bar 2.4s ease-in-out infinite}
.spark i:nth-child(1){height:26%;animation-delay:0s}
.spark i:nth-child(2){height:48%;animation-delay:.12s}
.spark i:nth-child(3){height:70%;animation-delay:.24s}
.spark i:nth-child(4){height:100%;animation-delay:.36s}
.spark i:nth-child(5){height:84%;animation-delay:.48s}
.spark i:nth-child(6){height:58%;animation-delay:.6s}
.spark i:nth-child(7){height:38%;animation-delay:.72s}
.spark i:nth-child(8){height:22%;animation-delay:.84s}
@keyframes bar{0%,100%{transform:scaleY(1)}50%{transform:scaleY(.62)}}
.spark i{transform-origin:bottom}

/* ═══════════════════════════════════════════════════════════════
   THÀNH PHẦN DÙNG CHUNG CHO CÁC SECTION SÁNG
   ═══════════════════════════════════════════════════════════════ */
.section{position:relative;padding:clamp(64px,8vw,112px) 0}
.section--paper{background:var(--paper)}
.section--paper2{background:var(--paper-2)}
.section__head{max-width:60ch;margin-bottom:clamp(36px,4.5vw,58px)}
.section__head h2{margin-top:18px}
/* nhãn [ 0x ] đã bỏ → tiêu đề là dòng đầu, không cần khoảng đệm trên */
.section__head h2:first-child,.hero h1:first-child,.contact .section__head h2:first-child{margin-top:0}
.section__head .eyebrow{color:var(--solar-deep)}
.section__head .eyebrow::before{background:var(--solar-deep)}
.section__head .idx{color:var(--ink-3)}
.lead{margin-top:16px;font-size:clamp(15.5px,1vw,16.5px);color:var(--ink-2)}
/* câu chốt: vạch vàng bên trái, chữ đậm màu hơn */
.lead--accent{margin-top:22px;padding-left:18px;border-left:3px solid var(--solar);color:var(--ink)}
.lead--accent b{font-weight:700}

/* Ảnh placeholder — thay bằng <img> chỉ cần đổi ở đây */
.ph{position:relative;display:grid;place-items:center;overflow:hidden;
  background:var(--paper-2);border-radius:var(--r)}
.ph::before{content:"";position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(11,12,13,.055) 1px,transparent 1px),
    linear-gradient(90deg,rgba(11,12,13,.055) 1px,transparent 1px);
  background-size:44px 44px}
.ph::after{content:"";position:absolute;inset:0;
  background:linear-gradient(122deg,transparent 42%,rgba(255,196,0,.14) 52%,transparent 62%)}
.ph span{position:relative;font-family:var(--f-mono);font-size:11px;font-weight:600;
  letter-spacing:.16em;text-transform:uppercase;color:var(--ink-3);text-align:center;
  padding:0 12px}
/* Ảnh thật đè lên placeholder. Nếu file chưa tồn tại, onerror sẽ ẩn <img>
   và placeholder bên dưới tự hiện lại — không cần sửa markup. */
.ph img{position:absolute;inset:0;z-index:2;width:100%;height:100%;object-fit:cover}
.ph--logo img{object-fit:contain;padding:18px}

/* Fade-up khi cuộn tới — rất nhẹ, chạy 1 lần */
.reveal{opacity:0;transform:translateY(16px);
  transition:opacity .65s var(--ease),transform .65s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ═══════════════════════════════════════════════════════════════
   03 · BĂNG SỐ LIỆU
   ═══════════════════════════════════════════════════════════════ */
.stats{position:relative;overflow:hidden;background:var(--solar);color:var(--carbon);
  border-block:2px solid var(--carbon)}
.stats::before{content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(11,12,13,.07) 1px,transparent 1px),
    linear-gradient(90deg,rgba(11,12,13,.07) 1px,transparent 1px);
  background-size:56px 56px}
/* dải sáng chéo rất mờ cho băng vàng đỡ phẳng */
.stats::after{content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(112deg,transparent 40%,rgba(255,255,255,.28) 50%,transparent 60%)}
.stats__grid{position:relative;z-index:1;display:grid;grid-template-columns:repeat(3,1fr)}
.stat{padding:clamp(34px,4vw,52px) clamp(18px,2.6vw,38px)}
.stat + .stat{border-left:1px solid rgba(11,12,13,.24)}
.stat__num{display:flex;align-items:baseline;gap:8px;
  font-family:var(--f-display);font-weight:900;font-variation-settings:'wdth' 116;
  font-size:clamp(44px,5.6vw,72px);line-height:1;letter-spacing:-.035em;
  font-variant-numeric:tabular-nums}
.stat__unit{font-family:var(--f-mono);font-size:clamp(14px,1.3vw,19px);font-weight:600;
  letter-spacing:0}
.stat__label{margin-top:14px;font-family:var(--f-mono);font-size:12px;font-weight:600;
  letter-spacing:.15em;text-transform:uppercase}
.stat__desc{margin-top:5px;font-size:14px;font-weight:500;color:rgba(11,12,13,.66)}

/* ═══════════════════════════════════════════════════════════════
   04 · GIỚI THIỆU
   ═══════════════════════════════════════════════════════════════ */
/* Nền ảnh công trình: rõ ở nửa trái (sau ảnh đội thi công), mờ dần sang nửa phải
   để chữ dễ đọc; viền trên/dưới hòa vào màu giấy cho liền với section kề bên */
.about--bg{isolation:isolate;overflow:hidden;background:
  linear-gradient(180deg,var(--paper) 0%,rgba(244,245,243,0) 14%,rgba(244,245,243,0) 86%,var(--paper) 100%),
  linear-gradient(90deg,rgba(244,245,243,.15) 0%,rgba(244,245,243,.28) 33%,rgba(244,245,243,.72) 47%,rgba(244,245,243,.78) 100%),
  url(../../images/gioi-thieu/nen-ve-chung-toi.jpg) center 62%/cover no-repeat var(--paper)}
.about--bg .about__media{filter:drop-shadow(0 28px 34px rgba(0,0,0,.28))}
.about--bg .about__list li{background:rgba(244,245,243,.68);-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px)}
/* nền phía sau chữ đã rõ hơn → tăng tương phản chữ + quầng sáng mảnh quanh chữ */
.about--bg .about__body .lead{color:var(--ink);text-shadow:0 0 14px rgba(244,245,243,.9),0 0 3px rgba(244,245,243,.9)}
.about--bg .about__body h2{text-shadow:0 0 18px rgba(244,245,243,.85)}
.about--bg .about__body .eyebrow{color:#9A5B00;text-shadow:0 0 6px rgba(244,245,243,1),0 0 12px rgba(244,245,243,.95)}
.about--bg .about__list small{color:var(--ink-2);text-shadow:0 0 8px rgba(244,245,243,.9)}
.about__grid{display:grid;grid-template-columns:minmax(0,.92fr) minmax(0,1.08fr);
  gap:clamp(40px,5.5vw,80px);align-items:center}
.about__media{position:relative;padding-bottom:34px;padding-left:26px}
.about__media .ph{aspect-ratio:5/4;--chamfer:34px}
/* tiêu đề dài ~4 dòng — nhỏ hơn h2 chuẩn để không lấn cột */
.about__body h2{font-size:clamp(24px,2.5vw,32px)}
/* Khối "12 NĂM" vàng đè lên góc dưới trái */
.about__badge{position:absolute;left:0;bottom:0;z-index:2;--chamfer:18px;
  background:var(--solar);color:var(--carbon);padding:20px 26px 18px;
  border-radius:var(--r);box-shadow:0 24px 50px -22px rgba(0,0,0,.5)}
.about__badge b{display:block;font-family:var(--f-display);font-weight:900;
  font-variation-settings:'wdth' 116;font-size:clamp(44px,5vw,60px);line-height:.9;
  letter-spacing:-.04em}
.about__badge span{display:block;margin-top:8px;font-family:var(--f-mono);font-size:11px;
  font-weight:600;letter-spacing:.16em;text-transform:uppercase}
.about__body p + p{margin-top:16px}
.about__list{display:grid;grid-template-columns:1fr 1fr;gap:2px;margin-top:34px;
  background:rgba(11,12,13,.1)}
.about__list li{background:var(--paper);padding:20px 22px}
.about__list b{display:block;text-transform:uppercase;font-family:var(--f-display);font-weight:800;
  font-variation-settings:'wdth' 108;font-size:17px;color:var(--ink);letter-spacing:-.01em}
.about__list small{display:block;margin-top:4px;font-size:13.5px;color:var(--ink-3)}
.about__list i{display:block;width:22px;height:2px;background:var(--solar);margin-bottom:12px}

/* ═══════════════════════════════════════════════════════════════
   05 · GIẢI PHÁP THEO PHÂN KHÚC
   ═══════════════════════════════════════════════════════════════ */
.sol__head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;
  gap:24px;margin-bottom:clamp(36px,4.5vw,58px)}
.sol__head .section__head{margin-bottom:0}
/* Nền ảnh mái pin: mờ ở phần tiêu đề phía trên, rõ dần xuống vùng thẻ;
   trên/dưới hòa vào màu nền để liền với section kề bên */
.sol--bg{isolation:isolate;overflow:hidden;background:
  linear-gradient(180deg,var(--paper-2) 0%,rgba(234,236,232,.9) 12%,rgba(234,236,232,.82) 30%,rgba(234,236,232,.3) 52%,rgba(234,236,232,.22) 88%,var(--paper-2) 100%),
  url(../../images/gioi-thieu/nen-giai-phap.jpg) center 70%/cover no-repeat var(--paper-2)}
.sol--bg .sol__head .lead{color:var(--ink)}
.sol--bg .sol:not(.sol--dark):not(:hover){background:rgba(255,255,255,.8);
  -webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}
.sol-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}

.sol{--chamfer:26px;--pt:32px;--px:24px;position:relative;display:flex;flex-direction:column;
  padding:var(--pt) var(--px) 26px;background:var(--card);
  box-shadow:inset 0 0 0 1px rgba(11,12,13,.11);
  clip-path:polygon(0 0,calc(100% - var(--chamfer)) 0,100% var(--chamfer),100% 100%,0 100%);
  transition:background var(--t),box-shadow var(--t),transform var(--t)}
.sol:hover,.sol--dark{background:var(--graphite);
  box-shadow:inset 0 0 0 1px var(--solar),0 30px 60px -34px rgba(0,0,0,.6)}
.sol:hover{transform:translateY(-6px)}
/* lưới cell hiện ra khi card chuyển tối */
.sol__mesh{position:absolute;inset:0;pointer-events:none;opacity:0;transition:opacity var(--t);
  background-image:
    linear-gradient(rgba(255,196,0,.09) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,196,0,.09) 1px,transparent 1px);
  background-size:38px 38px}
.sol:hover .sol__mesh,.sol--dark .sol__mesh{opacity:1}

/* nhãn nằm cùng hàng với icon (bên phải) để thẻ tối không bị đẩy xuống thấp hơn các thẻ khác */
.sol__tag{position:absolute;top:calc(var(--pt) + 14px);right:var(--px);background:var(--solar);color:var(--carbon);
  padding:6px 12px;font-family:var(--f-mono);font-size:10px;font-weight:600;
  letter-spacing:.14em;text-transform:uppercase}

.sol__icon{width:52px;height:52px;display:grid;place-items:center;flex:none;
  border:1.5px solid rgba(11,12,13,.16);border-radius:var(--r);color:var(--solar-deep);
  transition:border-color var(--t),background var(--t),color var(--t)}
.sol__icon svg{width:24px;height:24px}
.sol:hover .sol__icon,.sol--dark .sol__icon{background:var(--solar);border-color:var(--solar);
  color:var(--carbon)}
.sol h3{margin:22px 0 10px;transition:color var(--t)}
.sol p{font-size:14.7px;color:var(--ink-2);transition:color var(--t)}
.sol:hover h3,.sol--dark h3{color:var(--snow)}
.sol:hover p,.sol--dark p{color:var(--snow-2)}

/* Bảng thông số mono */
.sol__specs{margin-top:26px;border-top:1px solid rgba(11,12,13,.12);transition:border-color var(--t)}
.sol:hover .sol__specs,.sol--dark .sol__specs{border-color:var(--steel)}
.sol__specs div{display:flex;justify-content:space-between;align-items:baseline;gap:12px;
  padding:11px 0;border-bottom:1px dashed rgba(11,12,13,.12);transition:border-color var(--t)}
.sol:hover .sol__specs div,.sol--dark .sol__specs div{border-color:rgba(255,255,255,.09)}
.sol__specs dt{font-family:var(--f-mono);font-size:10.5px;font-weight:500;letter-spacing:.13em;
  text-transform:uppercase;color:var(--ink-3);transition:color var(--t)}
.sol__specs dd{font-family:var(--f-mono);font-size:14px;font-weight:600;color:var(--ink);
  white-space:nowrap;transition:color var(--t)}
.sol:hover .sol__specs dt,.sol--dark .sol__specs dt{color:var(--snow-2)}
.sol:hover .sol__specs dd,.sol--dark .sol__specs dd{color:var(--solar)}

.sol__link{margin-top:auto;padding-top:26px;display:inline-flex;align-items:center;gap:10px;
  font-family:var(--f-display);font-weight:800;font-variation-settings:'wdth' 106;
  font-size:13px;letter-spacing:.05em;text-transform:uppercase;color:var(--ink);
  transition:color var(--t)}
.sol__link .arw{transition:transform var(--t)}
.sol:hover .sol__link,.sol--dark .sol__link{color:var(--solar)}
.sol:hover .sol__link .arw{transform:translateX(6px)}
.sol__link::after{content:"";position:absolute;inset:0}

/* Subgrid: các thẻ cùng hàng dùng chung dòng lưới → icon, tiêu đề, mô tả,
   từng dòng thông số và nút "Xem chi tiết" thẳng hàng giữa các thẻ.
   7 dòng/thẻ = icon · h3 · p · 3 dòng thông số · link */
@supports (grid-template-rows:subgrid){
  /* row-gap của lưới cha sẽ lọt vào giữa các dòng trong thẻ → bỏ, dùng margin giữa các hàng thẻ */
  .sol-grid{row-gap:0}
  .sol{display:grid;grid-row:span 7;grid-template-rows:subgrid;row-gap:0}
  .sol__icon{align-self:start}
  .sol__specs{display:grid;grid-row:span 3;grid-template-rows:subgrid;row-gap:0}
  .sol__specs div{align-items:center}
  .sol__link{align-self:end;justify-self:start}
}

/* ═══════════════════════════════════════════════════════════════
   TAB LỌC — dùng chung cho Dự án & Sản phẩm
   ═══════════════════════════════════════════════════════════════ */
.filter{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.filter__btn{
  position:relative;padding:11px 20px;border:1.5px solid rgba(11,12,13,.16);
  border-radius:var(--r);background:transparent;color:var(--ink-2);
  font-family:var(--f-mono);font-size:12px;font-weight:600;letter-spacing:.1em;
  text-transform:uppercase;white-space:nowrap;
  transition:background var(--t),color var(--t),border-color var(--t);
}
.filter__btn:hover{border-color:var(--ink);color:var(--ink)}
.filter__btn[aria-selected="true"]{
  background:var(--solar);border-color:var(--solar);color:var(--carbon);
}
.filter__btn .n{font-size:10px;opacity:.55;margin-left:7px}
/* nhá nhẹ khi tab được chọn từ menu con */
@keyframes flash{0%,100%{box-shadow:0 0 0 0 rgba(255,196,0,0)}
                 35%{box-shadow:0 0 0 6px rgba(255,196,0,.28)}}
.filter.is-flash [aria-selected="true"]{animation:flash .9s var(--ease)}

/* Khối tiêu đề + tab nằm 2 bên */
.head-row{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;
  gap:26px;margin-bottom:clamp(32px,4vw,52px)}
.head-row .section__head{margin-bottom:0;max-width:none}

.is-hidden{display:none!important}
@keyframes cardIn{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
.card-anim{animation:cardIn .45s var(--ease) both}

/* ═══════════════════════════════════════════════════════════════
   06 · DỰ ÁN TIÊU BIỂU
   ═══════════════════════════════════════════════════════════════ */
.proj-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.proj{
  position:relative;display:flex;flex-direction:column;background:var(--card);
  box-shadow:inset 0 0 0 1px rgba(11,12,13,.11);
  transition:box-shadow var(--t),transform var(--t);
}
.proj:hover{transform:translateY(-5px);
  box-shadow:inset 0 0 0 1px rgba(11,12,13,.11),0 26px 52px -30px rgba(0,0,0,.5)}
.proj__media{position:relative;overflow:hidden}
.proj__media .ph{aspect-ratio:16/11;transition:transform .55s var(--ease)}
.proj:hover .proj__media .ph{transform:scale(1.05)}
/* nhãn năm nằm trên ảnh */
.proj__year{position:absolute;z-index:2;left:0;top:0;background:var(--carbon);color:var(--solar);
  padding:7px 14px;font-family:var(--f-mono);font-size:11px;font-weight:600;letter-spacing:.12em}
.proj__cat{position:absolute;z-index:2;right:12px;top:12px;
  background:rgba(255,255,255,.9);backdrop-filter:blur(6px);color:var(--ink);
  padding:5px 11px;border-radius:var(--r);
  font-family:var(--f-mono);font-size:10px;font-weight:600;letter-spacing:.11em;
  text-transform:uppercase}
.proj__body{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1}
.proj h3{transition:color var(--t)}
.proj:hover h3{color:var(--solar-deep)}
.proj__loc{margin-top:6px;font-size:13.5px;color:var(--ink-3)}
/* gạch vàng nở ra khi hover */
.proj__rule{height:2px;background:rgba(11,12,13,.12);margin:18px 0 0;position:relative}
.proj__rule::after{content:"";position:absolute;inset:0 100% 0 0;background:var(--solar);
  transition:inset .45s var(--ease)}
.proj:hover .proj__rule::after{inset:0}
.proj__specs{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:16px}
.proj__specs dt{font-family:var(--f-mono);font-size:10px;font-weight:500;letter-spacing:.13em;
  text-transform:uppercase;color:var(--ink-3)}
.proj__specs dd{margin-top:3px;font-family:var(--f-mono);font-size:15px;font-weight:600;
  color:var(--ink);letter-spacing:-.01em}

/* ═══════════════════════════════════════════════════════════════
   07 · SẢN PHẨM NỔI BẬT
   ═══════════════════════════════════════════════════════════════ */
.prod-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.prod{
  position:relative;display:flex;flex-direction:column;background:var(--card);
  box-shadow:inset 0 0 0 1px rgba(11,12,13,.11);
  transition:box-shadow var(--t),transform var(--t);
}
.prod:hover{transform:translateY(-5px);box-shadow:inset 0 0 0 1px var(--solar)}
.prod__media{position:relative;overflow:hidden;background:var(--paper-2);
  transition:background var(--t)}
.prod:hover .prod__media{background:var(--graphite)}
.prod__media .ph{aspect-ratio:1;background:transparent;transition:transform .5s var(--ease)}
.prod:hover .prod__media .ph{transform:scale(1.06)}
.prod:hover .prod__media .ph span{color:var(--snow-2)}
.prod__brand{position:absolute;z-index:3;right:0;top:0;background:var(--solar);color:var(--carbon);
  padding:6px 12px;font-family:var(--f-mono);font-size:10px;font-weight:600;letter-spacing:.12em;
  text-transform:uppercase}
.prod__body{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1;gap:4px}
.prod__type{font-family:var(--f-mono);font-size:10px;font-weight:500;letter-spacing:.14em;
  text-transform:uppercase;color:var(--ink-3)}
.prod h3{font-size:16.5px;font-variation-settings:'wdth' 104;line-height:1.25;
  transition:color var(--t)}
.prod:hover h3{color:var(--solar-deep)}
.prod__spec{margin-top:auto;padding-top:14px;display:flex;align-items:baseline;
  justify-content:space-between;gap:10px;border-top:1px dashed rgba(11,12,13,.14)}
.prod__spec b{font-family:var(--f-mono);font-size:17px;font-weight:600;color:var(--ink);
  letter-spacing:-.02em}
.prod__spec small{font-family:var(--f-mono);font-size:10px;font-weight:500;letter-spacing:.12em;
  text-transform:uppercase;color:var(--ink-3)}
/* Nút mở chi tiết — phủ toàn bộ card thành vùng bấm */
.prod__more{margin-top:16px;display:inline-flex;align-items:center;gap:9px;
  font-family:var(--f-display);font-weight:800;font-variation-settings:'wdth' 106;
  font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--ink);
  transition:color var(--t)}
.prod__more .arw{transition:transform var(--t)}
.prod:hover .prod__more{color:var(--solar-deep)}
.prod:hover .prod__more .arw{transform:translateX(5px)}
.prod__more::after{content:"";position:absolute;inset:0}

/* Ô logo hãng trong card sản phẩm */
.ph--logo span,.ph--prod span{font-family:var(--f-display);font-weight:900;
  font-variation-settings:'wdth' 122;font-size:clamp(17px,1.7vw,22px);letter-spacing:-.02em;
  color:var(--ink-3);transition:color var(--t)}
/* ảnh sản phẩm phủ kín khung, khác với logo hãng (contain) */
.ph--prod img{object-fit:cover;padding:0}

/* ── Modal chi tiết sản phẩm ──────────────────────────────────── */
.modal{position:fixed;inset:0;z-index:200;display:grid;place-items:center;
  padding:clamp(12px,3vw,32px);
  opacity:0;visibility:hidden;transition:opacity .28s var(--ease),visibility .28s}
.modal.is-open{opacity:1;visibility:visible}
.modal__bd{position:absolute;inset:0;background:rgba(11,12,13,.82);
  backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px)}
/* popup lớn: rộng tối đa 1240px nhưng không quá 160vh — khung ảnh 3:4 (≈41% bề ngang) nhờ đó
   luôn lọt màn hình theo chiều cao, không phải cuộn */
.modal__box{--chamfer:30px;position:relative;width:min(1240px,100%,calc(160vh / var(--z)));max-height:calc(92vh / var(--z));
  overflow:auto;background:var(--paper);
  clip-path:polygon(0 0,calc(100% - var(--chamfer)) 0,100% var(--chamfer),100% 100%,0 100%);
  transform:translateY(16px) scale(.985);transition:transform .3s var(--ease)}
.modal.is-open .modal__box{transform:none}
.modal__close{position:absolute;top:16px;right:16px;z-index:3;width:40px;height:40px;
  display:grid;place-items:center;background:var(--carbon);color:var(--snow);
  border-radius:var(--r);transition:background var(--t),color var(--t),transform var(--t)}
.modal__close:hover{background:var(--solar);color:var(--carbon);transform:rotate(90deg)}
.modal__close svg{width:17px;height:17px}

.modal__grid{display:grid;grid-template-columns:minmax(0,.82fr) minmax(0,1.18fr)}
.modal__media{position:relative;background:var(--paper-2)}
/* logo HAG đóng dấu ở góc trên phải thân máy. Ảnh popup (3:4) luôn vừa theo chiều ngang
   và căn giữa theo chiều dọc → neo logo theo tâm khung + đơn vị cqw của khung */
.modal__media{container-type:inline-size}
.modal__logo{position:absolute;z-index:3;top:calc(50% - var(--logo-y,64cqw));right:6.5cqw;width:25cqw;height:auto;
  pointer-events:none}
/* khung ảnh tối thiểu đúng tỉ lệ ảnh popup 3:4 (cqw theo khung .modal__media) → ảnh luôn vừa theo
   chiều ngang, kể cả sản phẩm ít dòng giá; logo HAG nhờ đó luôn nằm đúng góc máy, không bị cắt */
.modal__media .ph{height:100%;min-height:280px;min-height:133.4cqw}
/* ảnh sản phẩm: hiện trọn, không cắt mép; nền trắng liền với ảnh nền trắng */
.modal__media .ph img{object-fit:contain;background:#fff}
.modal__badge{position:absolute;z-index:3;left:0;top:0;background:var(--solar);color:var(--carbon);
  padding:8px 16px;font-family:var(--f-mono);font-size:11px;font-weight:600;letter-spacing:.12em;
  text-transform:uppercase}
.modal__body{padding:clamp(24px,3.6vw,56px)}
.modal__type{font-family:var(--f-mono);font-size:12px;font-weight:600;letter-spacing:.14em;
  text-transform:uppercase;color:var(--ink-3)}
.modal__body h3{margin:10px 0 0;font-size:clamp(22px,2.7vw,38px);
  font-variation-settings:'wdth' 112}
.modal__sum{display:flex;flex-wrap:wrap;gap:10px 36px;margin-top:20px;padding-top:20px;
  border-top:1px solid rgba(11,12,13,.14)}
.modal__sum div{display:flex;flex-direction:column;gap:3px}
.modal__sum dt{font-family:var(--f-mono);font-size:11px;font-weight:500;letter-spacing:.13em;
  text-transform:uppercase;color:var(--ink-3)}
.modal__sum dd{font-family:var(--f-mono);font-size:clamp(15px,1.3vw,18px);font-weight:600;color:var(--ink)}

.modal__tabletitle{display:flex;align-items:baseline;gap:14px;margin:34px 0 14px;
  font-family:var(--f-mono);font-size:12px;font-weight:600;letter-spacing:.15em;
  text-transform:uppercase;color:var(--ink-3)}
.modal__tabletitle::after{content:"";flex:1;height:1px;
  background:repeating-linear-gradient(90deg,rgba(11,12,13,.22) 0 1px,transparent 1px 9px)}
.spec{width:100%;border-collapse:collapse}
.spec th{padding:0 0 12px;text-align:left;font-family:var(--f-mono);font-size:11px;font-weight:600;
  letter-spacing:.13em;text-transform:uppercase;color:var(--ink);
  border-bottom:2px solid var(--carbon)}
.spec th:last-child,.spec td:last-child{text-align:right}
.spec td{padding:clamp(13px,1.2vw,17px) 0;font-family:var(--f-mono);font-size:clamp(13px,1.1vw,15.5px);font-weight:500;color:var(--ink-2);
  border-bottom:1px dashed rgba(11,12,13,.16)}
.spec tr:hover td{background:var(--solar-wash)}
.spec td:first-child{font-weight:600;color:var(--ink);letter-spacing:-.02em;
  overflow-wrap:anywhere;padding-right:14px}
.spec .price{color:var(--ink-3);white-space:nowrap}
.spec .price b{font-weight:600;color:var(--solar-deep)}
.modal__note{margin-top:20px;padding:16px 18px;background:var(--card);
  box-shadow:inset 0 0 0 1px rgba(11,12,13,.1);border-left:2px solid var(--solar);
  font-size:14px;color:var(--ink-2)}
.modal__cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
.modal__cta .btn{flex:1;min-width:180px}
.modal__cta .btn--ghost{--fg:var(--ink);--bd:rgba(11,12,13,.24)}
.modal__cta .btn--ghost:hover{--bd:var(--carbon);--fg:var(--carbon)}

/* ═══════════════════════════════════════════════════════════════
   08 · ĐỐI TÁC & NHÀ CUNG CẤP
   ═══════════════════════════════════════════════════════════════ */
.marquee{position:relative;overflow:hidden;
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 9%,#000 91%,transparent);
          mask-image:linear-gradient(90deg,transparent,#000 9%,#000 91%,transparent)}
.marquee + .marquee{margin-top:14px}
.marquee__track{display:flex;gap:14px;width:max-content;
  animation:slide 63s linear infinite}
.marquee--rev .marquee__track{animation-direction:reverse;animation-duration:78s}
@keyframes slide{to{transform:translateX(calc(-50% - 7px))}}
.marquee:hover .marquee__track{animation-play-state:paused}

.plogo{flex:none;width:198px;height:88px;display:grid;place-items:center;
  background:var(--card);box-shadow:inset 0 0 0 1px rgba(11,12,13,.1);
  transition:background var(--t),box-shadow var(--t),transform var(--t)}
.plogo{position:relative}
.plogo span{font-family:var(--f-display);font-weight:900;font-variation-settings:'wdth' 118;
  font-size:19px;letter-spacing:-.01em;text-transform:uppercase;color:var(--ink-3);
  transition:color var(--t)}
.plogo img{position:absolute;inset:0;z-index:2;width:100%;height:100%;object-fit:contain;
  padding:20px 26px}
/* logo PNG nền trong suốt → giấu chữ dự phòng phía sau; ảnh lỗi (hidden) thì chữ hiện lại */
.plogo img:not([hidden]) + span{visibility:hidden}
.plogo:hover{background:var(--carbon);box-shadow:inset 0 0 0 1px var(--solar);transform:translateY(-3px)}
.plogo:hover span{color:var(--solar)}

/* ═══════════════════════════════════════════════════════════════
   SLIDER CUỘN NGANG (dự án ở trang chủ)
   Dựng trên scroll-snap gốc của trình duyệt — vuốt cảm ứng, trackpad
   và phím mũi tên chạy sẵn, nút bấm chỉ gọi scrollBy().
   ═══════════════════════════════════════════════════════════════ */
.sldr{position:relative}
.sldr__track{
  display:grid;grid-auto-flow:column;grid-auto-columns:calc((100% - 44px) / 3);gap:22px;
  overflow-x:auto;overscroll-behavior-x:contain;
  scroll-snap-type:x mandatory;scroll-behavior:smooth;
  padding-block:6px;                 /* chừa chỗ cho card nhô lên khi hover */
  scrollbar-width:none;
}
.sldr__track::-webkit-scrollbar{display:none}
.sldr__track > *{scroll-snap-align:start}
.sldr__track:focus-visible{outline:2px solid var(--solar);outline-offset:6px}

/* nút điều hướng nằm cạnh tiêu đề */
.sldr__nav{display:flex;gap:8px;flex:none}
.sldr__btn{width:46px;height:46px;display:grid;place-items:center;
  border:1.5px solid rgba(11,12,13,.2);border-radius:var(--r);color:var(--ink);
  transition:background var(--t),border-color var(--t),color var(--t),opacity var(--t)}
.sldr__btn svg{width:19px;height:19px}
.sldr__btn:hover:not(:disabled){background:var(--solar);border-color:var(--solar);
  color:var(--carbon)}
.sldr__btn:disabled{opacity:.3;cursor:default}
/* nút trái/phải + nút "Xem toàn bộ" đứng cùng hàng bên phải tiêu đề */
.head-row__side{display:flex;align-items:center;gap:14px;flex-wrap:wrap}

/* album trang chủ dạng slider: 3 album / khung, cuộn ngang */
.gal.sldr__track{grid-template-columns:none;grid-auto-flow:column;
  grid-auto-columns:calc((100% - 36px) / 3);gap:18px}

/* thanh tiến trình thay cho chấm tròn */
.sldr__foot{display:flex;align-items:center;gap:26px;margin-top:clamp(24px,3vw,34px)}
.sldr__bar{flex:1;height:3px;background:rgba(11,12,13,.12);border-radius:2px;overflow:hidden}
.sldr__bar i{display:block;height:100%;width:34%;background:var(--solar);
  transition:width .18s linear,transform .18s linear}

/* Dòng kết section: đường busbar + nút */
.sect-foot{display:flex;align-items:center;gap:24px;margin-top:clamp(32px,4vw,46px)}
.sect-foot .line{flex:1;height:1px;background:repeating-linear-gradient(90deg,
  rgba(11,12,13,.22) 0 1px,transparent 1px 9px)}

/* ═══════════════════════════════════════════════════════════════
   09 · LIÊN HỆ
   ═══════════════════════════════════════════════════════════════ */
.contact{position:relative;isolation:isolate;overflow:hidden;
  background:var(--carbon);color:var(--snow);
  padding:clamp(64px,8vw,112px) 0}
.contact .cell-grid{z-index:-1;opacity:.9}
.contact__glow{position:absolute;z-index:-2;width:min(760px,110vw);aspect-ratio:1;
  top:-30%;left:-16%;border-radius:50%;
  background:radial-gradient(circle,rgba(255,196,0,.16),transparent 66%);filter:blur(18px)}
.contact .section__head{margin-bottom:clamp(34px,4vw,50px)}
.contact .section__head h2{color:var(--snow)}
.contact .section__head .eyebrow{color:var(--solar)}
.contact .section__head .eyebrow::before{background:var(--solar)}
.contact .section__head .idx{color:var(--solar-deep)}
.contact .lead{color:var(--snow-2)}

.contact__grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:clamp(28px,3.5vw,52px);align-items:start}

/* — Người phụ trách — */
.people{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.person{--chamfer:20px;position:relative;padding:22px 20px;background:var(--graphite);
  box-shadow:inset 0 0 0 1px var(--steel);
  clip-path:polygon(0 0,calc(100% - var(--chamfer)) 0,100% var(--chamfer),100% 100%,0 100%);
  transition:box-shadow var(--t),transform var(--t)}
.person:hover{box-shadow:inset 0 0 0 1px var(--solar);transform:translateY(-3px)}
.person__role{font-family:var(--f-mono);font-size:10px;font-weight:600;letter-spacing:.14em;
  text-transform:uppercase;color:var(--solar-deep)}
.person__name{margin-top:6px;font-family:var(--f-display);font-weight:800;
  font-variation-settings:'wdth' 108;font-size:18px;letter-spacing:-.01em;color:var(--snow)}
.person__tel{display:block;margin-top:12px;font-family:var(--f-mono);font-size:20px;
  font-weight:600;letter-spacing:-.02em;color:var(--solar);transition:color var(--t)}
.person__tel:hover{color:var(--solar-hi)}
.person__acts{display:flex;gap:8px;margin-top:14px}
.person__acts a{flex:1;display:inline-flex;align-items:center;justify-content:center;gap:7px;
  padding:9px 10px;border:1px solid var(--steel-soft);border-radius:var(--r);
  font-family:var(--f-mono);font-size:11px;font-weight:600;letter-spacing:.08em;
  text-transform:uppercase;color:var(--snow-2);
  transition:background var(--t),color var(--t),border-color var(--t)}
.person__acts a:hover{background:var(--solar);border-color:var(--solar);color:var(--carbon)}
.person__acts svg{width:13px;height:13px;flex:none}

/* — Khối thông tin — */
.cinfo{margin-top:14px;border-top:1px solid var(--steel)}
.cinfo li{display:flex;gap:16px;padding:16px 0;border-bottom:1px solid var(--steel)}
.cinfo__ico{width:38px;height:38px;flex:none;display:grid;place-items:center;
  border:1px solid var(--steel-soft);border-radius:var(--r);color:var(--solar)}
.cinfo__ico svg{width:17px;height:17px}
.cinfo dt{font-family:var(--f-mono);font-size:10px;font-weight:600;letter-spacing:.14em;
  text-transform:uppercase;color:var(--snow-2)}
.cinfo dd{margin-top:4px;font-size:15px;color:var(--snow);overflow-wrap:anywhere}
.cinfo dd a{transition:color var(--t)}
.cinfo dd a:hover{color:var(--solar)}
.cinfo .hours{display:inline-flex;align-items:center;gap:8px;font-family:var(--f-mono);
  font-weight:600;color:var(--solar)}

/* — Form — */
.cform{--chamfer:26px;padding:clamp(24px,3vw,34px);background:var(--graphite);
  box-shadow:inset 0 0 0 1px var(--steel);
  clip-path:polygon(0 0,calc(100% - var(--chamfer)) 0,100% var(--chamfer),100% 100%,0 100%)}
.cform h3{color:var(--snow);font-size:20px}
.cform p.hint{margin-top:8px;font-size:14px;color:var(--snow-2)}
.cform__row{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:20px}
.field{display:flex;flex-direction:column;gap:7px}
.field--full{grid-column:1/-1}
.field label{font-family:var(--f-mono);font-size:10px;font-weight:600;letter-spacing:.13em;
  text-transform:uppercase;color:var(--snow-2)}
.field input,.field select,.field textarea{
  padding:13px 14px;background:var(--carbon);color:var(--snow);
  border:1px solid var(--steel-soft);border-radius:var(--r);
  font-family:var(--f-body);font-size:14.5px;
  transition:border-color var(--t),box-shadow var(--t)}
.field textarea{resize:vertical;min-height:96px;line-height:1.85}
.field select{appearance:none;cursor:pointer;
  background-image:linear-gradient(45deg,transparent 50%,var(--solar) 50%),
                   linear-gradient(135deg,var(--solar) 50%,transparent 50%);
  background-position:calc(100% - 19px) 21px,calc(100% - 14px) 21px;
  background-size:5px 5px,5px 5px;background-repeat:no-repeat}
.field input::placeholder,.field textarea::placeholder{color:var(--steel-soft)}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--solar);box-shadow:0 0 0 3px rgba(255,196,0,.16)}
.cform .btn{width:100%;margin-top:18px}
.cform .btn:disabled{opacity:.55;cursor:wait}
.cform__ok{margin-top:14px;padding:13px 15px;background:var(--solar-wash);
  border-left:2px solid var(--solar);font-size:14px;color:var(--snow)}
/* Lỗi: đổi sang đỏ cam để phân biệt rõ với thông báo thành công màu vàng */
.cform__ok--err{background:rgba(255,92,74,.1);border-left-color:#FF5C4A}

/* Bẫy bot. KHÔNG dùng display:none — nhiều bot bỏ qua ô display:none,
   nhưng vẫn điền ô bị đẩy ra ngoài khung nhìn như thế này. */
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}

/* ═══════════════════════════════════════════════════════════════
   08b · TIN TỨC — thẻ bài viết
   ═══════════════════════════════════════════════════════════════ */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.news{background:var(--card);box-shadow:inset 0 0 0 1px rgba(11,12,13,.11);
  transition:box-shadow var(--t),transform var(--t)}
.news:hover{transform:translateY(-5px);
  box-shadow:inset 0 0 0 1px rgba(11,12,13,.11),0 22px 40px -22px rgba(11,12,13,.4)}
.news__link{display:flex;flex-direction:column;height:100%;color:inherit}
.ph--news{aspect-ratio:16/9;transition:transform .55s var(--ease)}
.news:hover .ph--news{transform:scale(1.04)}
.news__body{display:flex;flex-direction:column;flex:1;gap:10px;padding:20px 22px 22px}
.news__meta{display:flex;flex-wrap:wrap;align-items:center;gap:8px 12px;
  font-family:var(--f-mono);font-size:10.5px;font-weight:500;letter-spacing:.1em;
  text-transform:uppercase;color:var(--ink-3)}
.news__cat{padding:4px 9px;background:var(--solar);color:var(--carbon);font-weight:600}
.news__body h3{font-size:18px;line-height:1.35;transition:color var(--t)}
.news:hover .news__body h3{color:var(--solar-deep)}
.news__ex{flex:1;font-size:14px;line-height:1.75;color:var(--ink-2)}
.news__more{font-family:var(--f-mono);font-size:11px;font-weight:600;letter-spacing:.12em;
  text-transform:uppercase;color:var(--ink)}
.news:hover .news__more{color:var(--solar-deep)}
.news-soon{max-width:64ch;margin-top:clamp(26px,3vw,36px);padding-left:16px;
  border-left:2px solid var(--solar);font-size:14.5px;line-height:1.8;color:var(--ink-2)}
.news-soon a{font-weight:600;color:var(--ink);border-bottom:1px solid var(--solar)}

/* ═══════════════════════════════════════════════════════════════
   08c · BÀI VIẾT — cột chữ đọc dài
   ═══════════════════════════════════════════════════════════════ */
.pagehero--post .crumb{display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin-bottom:22px;font-family:var(--f-mono);font-size:11px;letter-spacing:.1em;
  text-transform:uppercase;color:var(--snow-2)}
.crumb a{color:var(--snow-2);transition:color var(--t)}
.crumb a:hover{color:var(--solar)}
.post__date{margin-top:20px;font-family:var(--f-mono);font-size:11.5px;
  letter-spacing:.09em;text-transform:uppercase;color:var(--snow-2)}

/* 68ch là điểm dễ đọc nhất cho chữ dài — rộng hơn thì mắt khó bắt đầu dòng mới */
.article{max-width:68ch;font-size:16.5px;line-height:1.85;color:var(--ink-2)}
.article__lead{font-size:19px;line-height:1.7;color:var(--ink);
  padding-left:18px;border-left:3px solid var(--solar)}
.article h2{margin:clamp(40px,4.5vw,56px) 0 16px;font-size:clamp(22px,2.6vw,28px);
  color:var(--ink);font-variation-settings:'wdth' 110}
.article h3{margin:32px 0 10px;font-size:17.5px;color:var(--ink)}
.article p{margin-top:16px}
.article b{color:var(--ink);font-weight:600}
.article ul,.article ol{margin-top:16px;padding-left:24px;display:grid;gap:11px}
.article li{padding-left:4px}
.article li::marker{color:var(--solar-deep);font-weight:600}

.article .callout{margin-top:24px;padding:18px 20px;background:var(--card);
  box-shadow:inset 0 0 0 1px rgba(11,12,13,.1);border-left:3px solid var(--solar)}
.article .formula{margin-top:18px;padding:18px 20px;background:var(--carbon);
  color:var(--snow);font-family:var(--f-mono);font-size:14.5px;line-height:1.7;
  text-align:center;border-radius:var(--r)}

/* Bảng cuộn ngang trong khung riêng, không để tràn cả trang */
.tbl-wrap{margin-top:22px;overflow-x:auto;overscroll-behavior-x:contain}
.ptable{width:100%;min-width:520px;border-collapse:collapse;font-size:14.5px}
.ptable th{padding:0 14px 11px 0;text-align:left;font-family:var(--f-mono);font-size:10px;
  font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--ink);
  border-bottom:2px solid var(--carbon)}
.ptable td{padding:14px 14px 14px 0;vertical-align:top;
  border-bottom:1px dashed rgba(11,12,13,.16)}
.ptable tr:hover td{background:var(--solar-wash)}

.faq{margin-top:22px}
.faq dt{margin-top:22px;padding-top:18px;font-weight:600;color:var(--ink);font-size:16.5px;
  border-top:1px solid rgba(11,12,13,.14)}
.faq dt:first-child{margin-top:0}
.faq dd{margin-top:9px}

.article__cta{--chamfer:26px;margin-top:clamp(44px,5vw,64px);padding:clamp(26px,3vw,34px);
  background:var(--carbon);color:var(--snow-2);
  clip-path:polygon(0 0,calc(100% - var(--chamfer)) 0,100% var(--chamfer),100% 100%,0 100%)}
.article__cta h3{margin:0;color:var(--snow);font-size:21px}
.article__cta p{margin-top:12px;font-size:15px}
.article__btns{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
.article__btns .btn--ghost{--fg:var(--snow);--bd:var(--steel-soft)}
.article__btns .btn--ghost:hover{--bd:var(--solar);--fg:var(--solar)}

/* ═══════════════════════════════════════════════════════════════
   10 · FOOTER
   ═══════════════════════════════════════════════════════════════ */
.footer{position:relative;overflow:hidden;background:#08090A;color:var(--snow-2);
  border-top:1px solid var(--steel)}
.footer .cell-grid{opacity:.5}
/* padding-block, KHÔNG dùng padding viết tắt — element này dùng chung
   class .wrap, shorthand sẽ xoá mất padding-inline hai bên */
.footer__main{position:relative;display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:clamp(28px,3.4vw,48px);
  padding-block:clamp(48px,6vw,76px) clamp(34px,4vw,48px)}
.footer h4{font-family:var(--f-mono);font-size:11px;font-weight:600;letter-spacing:.15em;
  text-transform:uppercase;color:var(--snow);margin-bottom:16px}
.footer__about p{font-size:14.5px;margin-top:16px;max-width:38ch}
.footer__about .logo{margin-bottom:0}
.footer__meta{margin-top:16px;font-family:var(--f-mono);font-size:12px;font-weight:600;color:var(--solar);
  line-height:1.8}
.flinks li + li{margin-top:10px}
.flinks a{font-size:14.5px;transition:color var(--t),padding-left var(--t)}
.flinks a:hover{color:var(--solar);padding-left:5px}

.fnews p{font-size:14px;margin-bottom:14px}
.fnews__form{display:flex;gap:8px}
.fnews__form input{flex:1;min-width:0;padding:12px 14px;background:var(--carbon);
  color:var(--snow);border:1px solid var(--steel-soft);border-radius:var(--r);font-size:14px;
  transition:border-color var(--t)}
.fnews__form input:focus{outline:none;border-color:var(--solar)}
.fnews__form button{flex:none;padding:12px 18px;background:var(--solar);color:var(--carbon);
  border-radius:var(--r);font-family:var(--f-display);font-weight:800;font-size:12px;
  font-variation-settings:'wdth' 106;letter-spacing:.06em;text-transform:uppercase;
  transition:background var(--t)}
.fnews__form button:hover{background:var(--solar-hi)}
.fbranch{margin-top:24px;padding-top:20px;border-top:1px solid var(--steel)}
.fbranch dt{font-family:var(--f-mono);font-size:10px;font-weight:600;letter-spacing:.14em;
  text-transform:uppercase;color:var(--solar-deep)}
.fbranch dd{margin-top:5px;font-size:14px;color:var(--snow-2)}

.footer__bar{position:relative;display:flex;flex-wrap:wrap;align-items:center;
  justify-content:space-between;gap:16px;padding-block:20px 26px;
  border-top:1px solid var(--steel)}
.footer__bar small{font-family:var(--f-mono);font-size:11.5px;font-weight:600;color:var(--solar);
  letter-spacing:.04em}
.social{display:flex;gap:8px}
.social a{width:38px;height:38px;display:grid;place-items:center;
  border:1px solid var(--steel-soft);border-radius:var(--r);color:var(--snow-2);
  transition:background var(--t),color var(--t),border-color var(--t),transform var(--t)}
.social a:hover{background:var(--solar);border-color:var(--solar);color:var(--carbon);
  transform:translateY(-2px)}
.social svg{width:16px;height:16px}

/* ═══════════════════════════════════════════════════════════════
   11 · NÚT LIÊN HỆ NỔI
   ═══════════════════════════════════════════════════════════════ */
.fab{position:fixed;right:18px;bottom:18px;z-index:150;
  display:flex;flex-direction:column;align-items:flex-end;gap:10px}
.fab__list{display:flex;flex-direction:column;gap:10px;align-items:flex-end}
.fab__item{position:relative;width:50px;height:50px;display:grid;place-items:center;
  background:var(--graphite);color:var(--solar);border-radius:var(--r);
  box-shadow:inset 0 0 0 1px var(--steel-soft),0 12px 26px -12px rgba(0,0,0,.9);
  transition:background var(--t),color var(--t),box-shadow var(--t),transform var(--t)}
.fab__item:hover{background:var(--solar);color:var(--carbon);transform:translateY(-3px);
  box-shadow:inset 0 0 0 1px var(--solar),0 14px 30px -12px rgba(255,196,0,.6)}
.fab__item svg{width:20px;height:20px}
.fab__item b{font-family:var(--f-display);font-weight:900;font-size:16px;
  font-variation-settings:'wdth' 112}
/* nhãn hiện khi rê chuột */
.fab__item span{position:absolute;right:calc(100% + 10px);top:50%;transform:translateY(-50%) translateX(6px);
  padding:7px 12px;background:var(--carbon);color:var(--snow);border-radius:var(--r);
  box-shadow:inset 0 0 0 1px var(--steel-soft);
  font-family:var(--f-mono);font-size:11px;font-weight:600;letter-spacing:.08em;
  text-transform:uppercase;white-space:nowrap;
  opacity:0;visibility:hidden;transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s}
.fab__item:hover span{opacity:1;visibility:visible;transform:translateY(-50%)}

/* nút chính: hotline, có vòng sóng lan */
.fab__main{width:58px;height:58px;background:var(--solar);color:var(--carbon);
  box-shadow:0 14px 30px -12px rgba(255,196,0,.75)}
.fab__main::before{content:"";position:absolute;inset:0;border-radius:var(--r);
  border:2px solid var(--solar);animation:ring 2.4s var(--ease) infinite}
@keyframes ring{0%{transform:scale(1);opacity:.85}100%{transform:scale(1.55);opacity:0}}
.fab__main:hover{background:var(--solar-hi);color:var(--carbon)}
.fab__main svg{width:24px;height:24px}
.fab__toggle{display:none}

/* — Popup mời tư vấn (JS tạo), đứng bên trái cụm nút liên hệ nổi — */
.cta-pop{position:fixed;right:92px;bottom:18px;z-index:149;width:300px;
  padding:20px 22px 22px;background:var(--carbon);color:var(--snow);
  border-top:3px solid var(--solar);border-radius:var(--r);
  box-shadow:0 24px 50px -18px rgba(0,0,0,.6);
  opacity:0;visibility:hidden;transform:translateY(14px);
  transition:opacity .3s var(--ease),transform .3s var(--ease),visibility .3s}
.cta-pop[hidden]{display:none}
.cta-pop.is-on{opacity:1;visibility:visible;transform:none}
.cta-pop__title{font-family:var(--f-display);font-weight:800;font-size:18px;line-height:1.25;
  color:var(--snow);padding-right:22px}
.cta-pop__sub{margin-top:6px;font-size:13.5px;color:var(--snow-2)}
.cta-pop__btn{margin-top:14px;width:100%;padding:13px 18px;font-size:13px}
.cta-pop__close{position:absolute;top:8px;right:10px;width:28px;height:28px;
  display:grid;place-items:center;font-size:22px;line-height:1;color:var(--snow-2);
  transition:color var(--t)}
.cta-pop__close:hover{color:var(--solar)}

/* ═══════════════════════════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════════════════════════ */
@media (max-width:1080px){
  .nav a{padding:9px 10px;font-size:13.5px}
  .call__meta small{display:none}
  .sol-grid{grid-template-columns:repeat(2,1fr)}
  @supports (grid-template-rows:subgrid){ .sol:nth-child(n+3){margin-top:18px} }
}
@media (max-width:900px){
  :root{--header-h:64px}
  .nav,.header .call{display:none}
  .burger{display:flex}
  .hero__grid{grid-template-columns:1fr;gap:clamp(48px,9vw,64px)}
  .hero__copy{max-width:none}
  .hero__visual{order:2;perspective:1000px}
  .panel{width:min(78%,320px);--tiltY:-13deg}
  .probe--live{left:-8%}
  .probe--save{right:-6%}

  .about__grid{grid-template-columns:1fr;gap:44px}
  .about__media{max-width:560px}
  /* 1 cột: ảnh ở trên, chữ ở dưới → nền rõ phía trên, mờ dần xuống dưới */
  .about--bg{background:
    linear-gradient(180deg,rgba(244,245,243,.2) 0%,rgba(244,245,243,.45) 26%,rgba(244,245,243,.96) 38%,var(--paper) 100%),
    url(../../images/gioi-thieu/nen-ve-chung-toi.jpg) center top/cover no-repeat var(--paper)}
  .sol-grid{grid-template-columns:1fr;gap:16px}
  @supports (grid-template-rows:subgrid){ .sol-grid{row-gap:0} .sol:nth-child(n){margin-top:0} .sol + .sol{margin-top:16px} }

  .proj-grid{grid-template-columns:repeat(2,1fr);gap:16px}
  .news-grid{grid-template-columns:repeat(2,1fr);gap:16px}
  .sldr__track,.gal.sldr__track{grid-auto-columns:calc((100% - 16px) / 2);gap:16px}
  .prod-grid{grid-template-columns:repeat(3,1fr);gap:14px}
  .modal__grid{grid-template-columns:1fr}
  .modal__media .ph{min-height:0;aspect-ratio:16/9}
  /* 1 cột: khung ảnh nằm ngang, ảnh vừa theo chiều cao → logo về góc trên phải */
  .modal__logo{top:16px;right:16px;width:64px}

  .contact__grid{grid-template-columns:1fr;gap:36px}
  .footer__main{grid-template-columns:1fr 1fr;gap:36px 28px}
  .footer__about{grid-column:1/-1}
}

/* Tab lọc cuộn ngang, không xuống dòng */
@media (max-width:760px){
  .filter{flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none;
    margin-inline:calc(var(--pad) * -1);padding-inline:var(--pad);
    scroll-snap-type:x proximity}
  .filter::-webkit-scrollbar{display:none}
  .filter__btn{flex:none;scroll-snap-align:start}
  .head-row{flex-direction:column;align-items:stretch;gap:22px}

  /* 3 cột ở đây là quá chật (~170px/card) — hạ xuống 2 */
  .prod-grid{grid-template-columns:repeat(2,1fr);gap:14px}
}
@media (max-width:560px){
  .panel{width:82%}
  .probe{padding:11px 14px}
  .probe__val{font-size:21px}
  .probe--live{left:-14px;bottom:6%}
  .probe--save{right:-14px;top:2%}
  .hero__cta{flex-direction:column;align-items:stretch}
  .hero__cta .btn{width:100%}
  .hero__trust{gap:12px 20px}

  /* Băng số liệu: 3 dòng ngang, vạch ngăn chuyển thành ngang */
  .stats__grid{grid-template-columns:1fr}
  .stat{padding:26px 4px;display:flex;flex-wrap:wrap;align-items:baseline;
        justify-content:space-between;gap:4px 16px}
  .stat + .stat{border-left:0;border-top:1px solid rgba(11,12,13,.24)}
  .stat__num{flex:none}
  .stat__label{margin-top:0;text-align:right}
  .stat__desc{flex-basis:100%;margin-top:2px}

  .about__media{padding-left:16px;padding-bottom:26px}
  .about__list{grid-template-columns:1fr}
  .sol{--pt:26px;--px:22px;padding-bottom:24px}
  .sol__head{flex-direction:column;align-items:stretch}
  .sol__head .btn{width:100%}

  /* Dự án 1 cột; Sản phẩm cuộn ngang có snap, hé thấy card kế tiếp */
  .proj-grid{grid-template-columns:1fr}
  .news-grid{grid-template-columns:1fr}
  .article{font-size:16px}
  .article__lead{font-size:17.5px;padding-left:14px}
  .article__btns .btn{width:100%}
  /* slider: 1 card + hé thấy card kế tiếp */
  .sldr__track,.gal.sldr__track{grid-auto-columns:87%;gap:14px}
  .sldr__btn{width:42px;height:42px}
  .sldr__foot{gap:16px;flex-wrap:wrap}
  .sldr__foot .btn{width:100%;order:2}
  .sldr__bar{order:1;flex-basis:100%}
  .prod-grid{grid-template-columns:none;grid-auto-flow:column;grid-auto-columns:64%;
    overflow-x:auto;scroll-snap-type:x mandatory;scrollbar-width:none;
    margin-inline:calc(var(--pad) * -1);padding:4px var(--pad)}
  .prod-grid::-webkit-scrollbar{display:none}
  .prod{scroll-snap-align:start}
  .sect-foot .btn{flex:1}

  /* Bảng model trong modal: bỏ cột số pha cho đỡ chật */
  /* chỉ ẩn cột "Số pha" khi bảng đủ 4 cột; bảng 3 cột thì cột 3 là Giá */
  .spec th:nth-child(3):not(:last-child),.spec td:nth-child(3):not(:last-child){display:none}
  .spec td{font-size:12px}
  .modal__box{max-height:92vh}
  .plogo{width:152px;height:74px}

  /* Liên hệ + footer 1 cột */
  .people{grid-template-columns:1fr}
  .cform__row{grid-template-columns:1fr}
  .footer__main{grid-template-columns:1fr;gap:32px}
  .footer__bar{flex-direction:column;align-items:flex-start;gap:14px}

  /* Nút nổi: thu lại thành 2 nút, bấm + để bung 3 kênh còn lại */
  .fab{right:14px;bottom:14px;gap:8px}
  .cta-pop{left:14px;right:76px;bottom:14px;width:auto;padding:16px 18px 18px}
  .cta-pop__title{font-size:16px}
  .fab__toggle{display:grid;width:44px;height:44px}
  .fab__toggle svg{transition:transform .3s var(--ease)}
  .fab.is-open .fab__toggle svg{transform:rotate(45deg)}
  .fab__list{opacity:0;visibility:hidden;transform:translateY(10px);pointer-events:none;
    transition:opacity .28s var(--ease),transform .28s var(--ease),visibility .28s}
  .fab.is-open .fab__list{opacity:1;visibility:visible;transform:none;pointer-events:auto}
  .fab__item span{display:none}
  .fab__item{width:46px;height:46px}
  .fab__main{width:52px;height:52px}
  .plogo span{font-size:15px}
}

/* — Tôn trọng thiết lập giảm chuyển động — */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;
    transition-duration:.01ms!important;scroll-behavior:auto!important}
}

/* ═══════════════════════════════════════════════════════════════
   BANNER ĐẦU TRANG CON
   ═══════════════════════════════════════════════════════════════ */
.pagehero{position:relative;isolation:isolate;overflow:hidden;background:var(--carbon);
  color:var(--snow);
  padding-top:calc(var(--header-h) + clamp(38px,4.5vw,58px));
  padding-bottom:clamp(38px,4.5vw,58px)}
.pagehero__glow{position:absolute;z-index:-2;width:min(760px,110vw);aspect-ratio:1;
  top:-46%;right:-12%;border-radius:50%;
  background:radial-gradient(circle,rgba(255,196,0,.17),transparent 66%);filter:blur(18px)}
.pagehero .cell-grid{z-index:-1;opacity:.85}
.pagehero h1{margin-top:16px;color:var(--snow);font-size:clamp(30px,4.6vw,52px)}
.pagehero__lead{margin-top:16px;max-width:56ch;color:var(--snow-2);
  font-size:clamp(15px,1.05vw,16.5px)}
.crumb{display:flex;align-items:center;gap:10px;font-family:var(--f-mono);font-size:11px;
  font-weight:600;letter-spacing:.14em;text-transform:uppercase}
.crumb a{color:var(--snow-2);transition:color var(--t)}
.crumb a:hover{color:var(--solar)}
.crumb span{color:var(--steel-soft)}
.crumb b{color:var(--solar);font-weight:600}

/* ═══════════════════════════════════════════════════════════════
   THƯ VIỆN ẢNH THI CÔNG (hinh-anh-thi-cong.html)
   ═══════════════════════════════════════════════════════════════ */
.gallery,.gal{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
/* Album: các ảnh chồng lên nhau trong 1 ô, JS bật .is-on cho ảnh đang chiếu → mờ dần chuyển ảnh */
.gal[data-view="albums"] .album{position:relative;display:grid}
.gal[data-view="albums"] .album .gallery__item{grid-area:1/1;opacity:0;visibility:hidden;
  transition:opacity .8s var(--ease),visibility .8s}
.gal[data-view="albums"] .album .gallery__item.is-on{opacity:1;visibility:visible}
/* chấm nằm trong ảnh, cách đáy ảnh 22px — neo theo chiều cao ảnh 3:4 (cqw), không phụ thuộc chú thích 1 hay 2 dòng */
.gal .album{container-type:inline-size}
.album__dots{display:none;position:absolute;z-index:2;left:0;right:0;top:calc(100cqw * 4 / 3 - 31px);justify-content:center;gap:7px}
.gal[data-view="albums"] .album__dots{display:flex}
.album__dots button{width:9px;height:9px;padding:0;border-radius:50%;background:rgba(255,255,255,.55);
  box-shadow:0 0 0 1px rgba(0,0,0,.25);transition:background var(--t),transform var(--t)}
.album__dots button[aria-current="true"]{background:var(--solar);transform:scale(1.25)}
.album__count{display:none;position:absolute;z-index:2;top:12px;right:12px;padding:6px 11px;
  background:var(--carbon);color:var(--solar);font-family:var(--f-mono);font-size:11px;font-weight:600;
  letter-spacing:.1em;text-transform:uppercase;pointer-events:none}
.gal[data-view="albums"] .album__count{display:block}
.gallery__item a{cursor:zoom-in}
.gallery__item{position:relative;overflow:hidden;background:var(--card);
  box-shadow:inset 0 0 0 1px rgba(11,12,13,.1)}
/* thư viện thi công dùng ảnh dọc 3:4 */
.gallery__item a{display:block;aspect-ratio:3/4;overflow:hidden;background:var(--paper-2)}
.gallery__item img{width:100%;height:100%;object-fit:cover;transition:transform .55s var(--ease)}
.gallery__item:hover img{transform:scale(1.05)}
.gallery__item figcaption{display:flex;flex-direction:column;gap:5px;padding:16px 18px 18px}
.gallery__item figcaption b{font-family:var(--f-display);font-weight:800;
  font-variation-settings:'wdth' 108;font-size:clamp(16px,1.5vw,19px);line-height:1.2;color:var(--ink);
  text-transform:uppercase;letter-spacing:.01em;overflow-wrap:anywhere}
.gallery__item figcaption span{font-family:var(--f-mono);font-size:13px;color:var(--ink-3)}
@media (max-width:900px){ .gallery,.gal{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px} }
@media (max-width:560px){ .gallery,.gal{grid-template-columns:1fr} }
/* chế độ xem ảnh đặt cạnh tiêu đề */
.head-row .section__head{flex:1 1 auto}

/* — Video Facebook — */
/* lưới 3 cột đều: video ngang trải cả 3 cột (= đúng bề rộng 1 hàng 3 reel dọc) */
.vids{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.vid__frame{position:relative;aspect-ratio:16/9;background:var(--carbon);overflow:hidden}
.vid__frame iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.vid__play{position:absolute;inset:0;display:grid;place-items:center;width:100%;
  background:linear-gradient(135deg,var(--graphite),var(--carbon));color:var(--snow);cursor:pointer}
.vid__play span{display:grid;place-items:center;width:74px;height:74px;border-radius:50%;
  background:var(--solar);color:var(--carbon);transition:transform var(--t)}
.vid__play:hover span{transform:scale(1.08)}
.vid__play svg{width:28px;height:28px;margin-left:4px}
.vid--empty .vid__frame{display:grid;place-items:center;padding:24px;text-align:center;
  color:var(--snow-2);font-size:15px;line-height:1.7}
.vid--empty .vid__frame a{color:var(--solar);text-decoration:underline}
.vid__title{margin-top:12px;font-family:var(--f-display);font-weight:800;
  font-variation-settings:'wdth' 108;font-size:16px;color:var(--ink)}
@media (max-width:760px){ .vids{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px} }
@media (max-width:480px){ .vids{grid-template-columns:1fr} }

/* — Trình xem ảnh phóng to — */
.lbox{position:fixed;inset:0;z-index:250;display:grid;grid-template-columns:auto 1fr auto;
  align-items:center;gap:12px;padding:clamp(12px,3vw,40px);background:rgba(11,12,13,.94)}
.lbox[hidden]{display:none}
.lbox__fig{display:flex;flex-direction:column;align-items:center;gap:14px;min-width:0;max-height:100%}
.lbox__fig img{max-width:100%;max-height:calc(100vh / var(--z) - 150px);object-fit:contain;box-shadow:0 30px 80px -30px #000}
.lbox__fig figcaption{display:flex;flex-wrap:wrap;justify-content:center;gap:4px 14px;text-align:center}
.lbox__fig b{font-family:var(--f-display);font-weight:800;font-size:17px;color:var(--snow)}
.lbox__fig span{font-family:var(--f-mono);font-size:12.5px;color:var(--snow-2)}
.lbox__fig em{font-style:normal;font-family:var(--f-mono);font-size:12.5px;color:var(--solar)}
.lbox__nav,.lbox__close{display:grid;place-items:center;width:48px;height:48px;
  background:var(--graphite);color:var(--snow);border-radius:var(--r);transition:background var(--t),color var(--t)}
.lbox__nav:hover,.lbox__close:hover{background:var(--solar);color:var(--carbon)}
.lbox__nav svg,.lbox__close svg{width:20px;height:20px}
.lbox__nav[hidden]{visibility:hidden;display:grid}
.lbox__close{position:absolute;top:16px;right:16px;z-index:2}
@media (max-width:560px){
  .lbox{grid-template-columns:1fr;padding:60px 10px 80px}
  .lbox__nav{position:absolute;bottom:18px}
  .lbox__nav--prev{left:calc(50% - 60px)} .lbox__nav--next{right:calc(50% - 60px)}
}
/* Reels Facebook quay dọc 9:16 */
.vid--reel .vid__frame{aspect-ratio:9/16}
.vid__link{display:inline-block;margin-top:4px;font-family:var(--f-mono);font-size:12px;
  letter-spacing:.06em;text-transform:uppercase;color:var(--solar-deep)}
.vid__link:hover{color:var(--ink)}
/* video ngang 16:9: chiếm trọn một hàng phía trên các reel dọc */
.vids .vid--wide{grid-column:1/-1}
/* album poster ngang: giữ trọn poster trong khung 3:4, nền trùng màu viền poster */
.album--poster .gallery__item a{background:#1E1A3E}
.album--poster .gallery__item img{object-fit:contain}