/* ============ TOKENS ============ */
:root{
  --bg:#F4F2EE; --surface:#FFFFFF; --surface-2:#FAF8F4; --surface-3:#F0ECE4;
  --ink:#1A1B1F; --muted:#5E6068; --faint:#8B8D96; --line:#E5E1D8; --line-2:#D3CDC0;
  /* brand = APEC hub (navy + gold) */
  --brand:#003057; --brand-hi:#0A4A7A; --brand-ink:#FFFFFF; --brand-2:#C9A24B;
  --brand-soft:#E4EBF2; --brand-tint:#EFF3F8;
  --dragon:#C9A24B; --lion:#6F8B2E;
  --good:#2E6E4E; --warn:#B8873B;
  --shadow-sm:0 1px 2px rgba(20,25,40,.05),0 4px 14px rgba(20,25,40,.05);
  --shadow-md:0 6px 30px rgba(20,25,40,.10);
  --r:14px; --r-sm:9px; --maxw:1200px;
  --font:"Be Vietnam Pro",system-ui,-apple-system,sans-serif;
  --serif:"Lora",Georgia,serif;
}
[data-brand="apecus"]{
  --brand:#003057; --brand-hi:#0A4A7A; --brand-2:#C9A24B;
  --brand-soft:#EFE7D2; --brand-tint:#F7F1E3;
}
[data-brand="usgreen"]{
  --brand:#003057; --brand-hi:#0A4A7A; --brand-2:#6F8B2E;
  --brand-soft:#E7EFD8; --brand-tint:#F2F7E9;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased}
img{max-width:100%}
a{color:var(--brand);text-decoration:none}
h1,h2,h3{line-height:1.15;margin:0;text-wrap:balance;letter-spacing:-.01em}
p{margin:0}
button{font-family:inherit;cursor:pointer}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 22px}
.serif{font-family:var(--serif)}
.tnum{font-variant-numeric:tabular-nums}

/* ============ TOP UTILITY BAR + BRAND SWITCHER ============ */
.util{background:var(--brand);color:var(--brand-ink);font-size:12.5px;transition:background .35s}
.util .wrap{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:40px;flex-wrap:wrap;padding-top:5px;padding-bottom:5px}
.util a{color:var(--brand-ink);opacity:.92}
.util a:hover{opacity:1}
.util .u-left{display:flex;gap:16px;align-items:center;flex-wrap:wrap}
.switcher{display:flex;gap:4px;background:rgba(255,255,255,.12);padding:3px;border-radius:999px}
.switcher button{border:0;background:transparent;color:var(--brand-ink);opacity:.7;font-size:12px;font-weight:600;
  padding:5px 12px;border-radius:999px;transition:.2s;white-space:nowrap}
.switcher button[aria-pressed="true"]{background:var(--brand-ink);color:var(--brand);opacity:1}
.switcher button:hover{opacity:1}

/* ============ HEADER ============ */
header.nav{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--surface) 88%,transparent);
  backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;gap:20px;min-height:66px}
.logo{display:flex;align-items:center;gap:11px;font-weight:800;font-size:19px;letter-spacing:-.02em;color:var(--ink)}
.emblem{width:38px;height:38px;border-radius:11px;display:grid;place-items:center;background:var(--brand);color:var(--brand-ink);
  flex:0 0 auto;transition:background .35s;position:relative;overflow:hidden}
.emblem svg{width:23px;height:23px}
.logo .lg-sub{font-size:11px;font-weight:600;color:var(--faint);letter-spacing:.02em;margin-top:-3px}
.logo .lg-name small{display:block}
nav.menu{display:flex;gap:3px;margin-left:auto}
nav.menu a{color:var(--muted);font-weight:600;font-size:14.5px;padding:8px 12px;border-radius:8px}
nav.menu a:hover{color:var(--brand);background:var(--brand-tint)}
.btn{display:inline-flex;align-items:center;gap:7px;font-weight:700;font-size:14.5px;border-radius:9px;padding:11px 18px;border:1.5px solid transparent;transition:.2s;text-align:center;justify-content:center}
.btn-primary{background:var(--brand);color:var(--brand-ink)}
.btn-primary:hover{background:var(--brand-hi)}
.btn-ghost{background:transparent;color:var(--brand);border-color:var(--line-2)}
.btn-ghost:hover{border-color:var(--brand);background:var(--brand-tint)}
.btn-gold{background:var(--brand-2);color:#1A1B1F}
.btn-gold:hover{filter:brightness(1.06)}
.nav .btn{padding:9px 15px;font-size:14px}
.hamb{display:none;margin-left:auto;background:none;border:1px solid var(--line-2);border-radius:8px;padding:8px 10px;color:var(--ink)}

/* ============ HERO ============ */
.hero{position:relative;overflow:hidden;background:
  radial-gradient(120% 130% at 85% -10%, var(--brand-soft) 0%, transparent 55%),var(--surface-2);
  border-bottom:1px solid var(--line);transition:background .35s}
.hero .wrap{padding:56px 22px 48px;display:grid;grid-template-columns:1.15fr .85fr;gap:44px;align-items:center}
.hero-ey{display:inline-flex;align-items:center;gap:9px;font-size:12.5px;font-weight:700;letter-spacing:.12em;
  text-transform:uppercase;color:var(--brand);margin-bottom:16px}
.hero-ey .dot{width:7px;height:7px;border-radius:50%;background:var(--brand-2)}
.hero h1{font-size:clamp(30px,4.7vw,50px);letter-spacing:-.02em}
.hero h1 em{font-family:var(--serif);font-style:italic;font-weight:500;color:var(--brand)}
.hero .lead{font-size:clamp(16px,1.9vw,18.5px);color:var(--muted);margin:18px 0 26px;max-width:52ch}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap}
.audience{margin-top:26px}
.audience .lbl{font-size:12.5px;color:var(--faint);font-weight:600;margin-bottom:9px}
.aud-chips{display:flex;gap:9px;flex-wrap:wrap}
.aud-chips button{border:1.5px solid var(--line-2);background:var(--surface);border-radius:999px;padding:9px 16px;
  font-weight:600;font-size:13.5px;color:var(--ink);display:inline-flex;align-items:center;gap:7px;transition:.2s}
.aud-chips button:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-tint)}
.aud-chips .ic{font-size:15px}

/* hero visual */
.hero-art{position:relative;aspect-ratio:1/1;border-radius:20px;overflow:hidden;background:var(--brand);box-shadow:var(--shadow-md)}
.hero-art .hero-photo{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:block}
.hero-art .hero-scrim{position:absolute;inset:0;background:linear-gradient(to top,rgba(0,18,38,.74),rgba(0,18,38,.08) 46%,transparent 72%)}
.hero-art .hero-cap{position:absolute;left:22px;bottom:24px;display:flex;align-items:center;gap:13px;color:#fff;z-index:2}
.hero-art .hero-cap .hero-cap-mark{width:54px;height:54px;flex:0 0 auto;border-radius:50%;border:2px solid rgba(255,255,255,.55);background:rgba(0,0,0,.28);display:grid;place-items:center}
.hero-art .hero-cap .hero-cap-mark svg{width:31px;height:31px}
.hero-art .hero-cap .hero-cap-txt b{font-family:var(--serif);font-size:27px;display:block;line-height:1.1}
.hero-art .hero-cap .hero-cap-txt span{font-size:12.5px;opacity:.9;letter-spacing:.03em}
.hero-art .swatches{position:absolute;left:0;right:0;bottom:0;display:flex;height:12px;z-index:3}
.hero-art .swatches span{flex:1}

/* ============ TRUST BAR ============ */
.trust{background:var(--surface);border-bottom:1px solid var(--line)}
.trust .wrap{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.trust .item{padding:20px 20px;display:flex;gap:13px;align-items:center;border-left:1px solid var(--line)}
.trust .item:first-child{border-left:0}
.trust .ic{width:40px;height:40px;border-radius:10px;background:var(--brand-tint);color:var(--brand);
  display:grid;place-items:center;flex:0 0 auto}
.trust .ic svg{width:22px;height:22px}
.trust .tt{font-weight:700;font-size:14.5px}
.trust .ts{font-size:12.5px;color:var(--faint)}

/* ============ SECTIONS ============ */
section{scroll-margin-top:78px}
.block{padding:64px 0}
.block.alt{background:var(--surface-2)}
.sec-head{max-width:64ch;margin-bottom:34px}
.sec-ey{font-size:12.5px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--brand);
  display:flex;align-items:center;gap:9px;margin-bottom:12px}
.sec-ey::before{content:"";width:24px;height:2px;background:var(--brand-2)}
.sec-head h2{font-size:clamp(24px,3.4vw,34px)}
.sec-head p{color:var(--muted);font-size:17px;margin-top:11px}

/* problem cards */
.problems{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}
.prob{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:20px 18px;text-align:left;
  transition:.2s;box-shadow:var(--shadow-sm)}
.prob:hover{transform:translateY(-3px);border-color:var(--brand);box-shadow:var(--shadow-md)}
.prob .pic{width:44px;height:44px;border-radius:11px;background:var(--brand-tint);color:var(--brand);display:grid;place-items:center;margin-bottom:14px}
.prob .pic svg{width:24px;height:24px}
.prob h3{font-size:16px;margin-bottom:5px}
.prob p{font-size:13px;color:var(--muted)}
.prob .go{margin-top:12px;font-size:13px;font-weight:700;color:var(--brand);display:inline-flex;gap:5px;align-items:center}

/* brand duo (hub) */
.duo{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.brandcard{border-radius:18px;padding:32px;color:#fff;position:relative;overflow:hidden;min-height:260px;
  display:flex;flex-direction:column;justify-content:space-between;box-shadow:var(--shadow-md)}
.brandcard.ap{background:linear-gradient(150deg,#00517f,#002236)}
.brandcard.us{background:linear-gradient(150deg,#00517f,#0a3a2b)}
.brandcard.ap .bc-sym{color:#E8C978}
.brandcard.us .bc-sym{color:#AECB6E}
.brandcard .bc-top{display:flex;align-items:center;gap:14px}
.brandcard .bc-em{width:56px;height:56px;border-radius:50%;border:2px solid rgba(255,255,255,.4);display:grid;place-items:center;background:rgba(255,255,255,.1)}
.brandcard .bc-em svg{width:32px;height:32px}
.brandcard .bc-logo{background:#fff;border-radius:14px;padding:14px 20px;display:inline-block;box-shadow:0 6px 18px rgba(0,0,0,.18)}
.brandcard .bc-logo img{height:50px;width:auto;max-width:100%;display:block}
.brandcard .bc-nm{font-family:var(--serif);font-size:27px}
.brandcard .bc-sym{font-size:12.5px;opacity:.82;letter-spacing:.04em}
.brandcard p{font-size:14.5px;opacity:.92;margin:16px 0}
.brandcard .bc-cta{display:inline-flex;align-items:center;gap:8px;font-weight:700;font-size:14.5px;
  background:rgba(255,255,255,.14);padding:10px 18px;border-radius:9px;color:#fff;align-self:flex-start;border:1px solid rgba(255,255,255,.25)}
.brandcard .bc-cta:hover{background:rgba(255,255,255,.24)}
.duo-note{text-align:center;color:var(--faint);font-size:13px;margin-top:16px}

/* single-brand identity band (brand mode) */
.brandband{display:none;border-radius:18px;overflow:hidden;box-shadow:var(--shadow-md)}
.brandband .bb-in{padding:36px;color:#fff;display:grid;grid-template-columns:auto 1fr;gap:26px;align-items:center}
[data-brand="apecus"] .brandband .bb-in{background:linear-gradient(150deg,#00517f,#002236)}
[data-brand="usgreen"] .brandband .bb-in{background:linear-gradient(150deg,#00517f,#0a3a2b)}
.brandband .bb-em{width:92px;height:92px;border-radius:50%;border:2px solid rgba(255,255,255,.4);display:grid;place-items:center;background:rgba(255,255,255,.1)}
.brandband .bb-em svg{width:52px;height:52px}
.brandband h3{font-family:var(--serif);font-size:28px;margin-bottom:6px}
.brandband p{opacity:.92;font-size:15px;max-width:60ch}

/* products */
.tabs{display:inline-flex;gap:4px;background:var(--surface-3);padding:5px;border-radius:12px;margin-bottom:26px;flex-wrap:wrap}
.tabs button{border:0;background:transparent;padding:9px 18px;border-radius:8px;font-weight:700;font-size:14px;color:var(--muted);transition:.2s}
.tabs button[aria-pressed="true"]{background:var(--surface);color:var(--brand);box-shadow:var(--shadow-sm)}
.warn-note{font-size:13px;color:var(--muted);margin-bottom:22px;display:flex;gap:8px;align-items:center}
.prod-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.pcard{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;
  display:flex;flex-direction:column;transition:.2s;box-shadow:var(--shadow-sm);text-align:left}
.pcard:hover{border-color:var(--brand);box-shadow:var(--shadow-md);transform:translateY(-2px)}
.pcard .swatch{height:8px;background:var(--brand)}
.pcard .pimg{height:200px;background:#fff;display:flex;align-items:center;justify-content:center;overflow:hidden;border-bottom:1px solid var(--line)}
.pcard .pimg img{width:100%;height:100%;object-fit:contain;transition:transform .3s}
.pcard:hover .pimg img{transform:scale(1.04)}
.pcard .pimg.ph{background:linear-gradient(135deg,var(--pc,#12213F),color-mix(in srgb,var(--pc,#12213F) 62%,#000));color:#fff}
.pcard .pimg.ph b{font-family:var(--serif);font-weight:800;text-align:center;font-size:21px;letter-spacing:.05em;line-height:1.35;opacity:.96}
.factory-photo{margin:18px 0 0;border-radius:var(--r);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-md)}
.factory-photo img{display:block;width:100%;height:auto}
.factory-photo figcaption{font-size:12.5px;color:var(--muted);padding:9px 13px;background:var(--surface)}
.m-img{margin:-4px 0 12px;border-radius:12px;overflow:hidden;background:#fff;border:1px solid var(--line)}
.m-img img{display:block;width:100%;height:auto;max-height:320px;object-fit:contain}
.cert-imgs{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-bottom:18px}
.cert-imgs figure{margin:0}
.cert-imgs img{width:100%;height:auto;border:1px solid var(--line);border-radius:10px;background:#fff;box-shadow:var(--shadow-sm);cursor:zoom-in;transition:.2s;display:block}
.cert-imgs img:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}
.cert-imgs figcaption{font-size:11.5px;color:var(--muted);margin-top:6px;text-align:center}
@media(max-width:520px){.cert-imgs{grid-template-columns:1fr}}
.pcard .pc-in{padding:18px;display:flex;flex-direction:column;gap:10px;flex:1}
.pc-codes{display:flex;gap:7px;flex-wrap:wrap}
.code{font-size:11.5px;font-weight:700;font-family:var(--serif);letter-spacing:.02em;padding:3px 9px;border-radius:6px;line-height:1.5}
.code.a{background:#EFE7D2;color:#8A6A20}
.code.f{background:#EDF2DD;color:#46621F}
.pcard h3{font-size:16.5px}
.pc-grp{font-size:12.5px;color:var(--faint);font-weight:600}
.pc-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;padding-top:8px;border-top:1px solid var(--line)}
.wtag{font-size:12px;font-weight:700;padding:4px 10px;border-radius:999px;background:var(--brand-tint);color:var(--brand)}
.wtag.none{background:var(--surface-3);color:var(--faint)}
.pc-foot .more{font-size:13px;font-weight:700;color:var(--brand)}

/* tools */
.tools-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.tool{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:26px;box-shadow:var(--shadow-sm)}
.tool h3{font-size:19px;display:flex;align-items:center;gap:10px;margin-bottom:6px}
.tool .th-ic{width:34px;height:34px;border-radius:9px;background:var(--brand);color:var(--brand-ink);display:grid;place-items:center}
.tool .th-ic svg{width:19px;height:19px}
.tool .tdesc{color:var(--muted);font-size:14px;margin-bottom:18px}
.field{margin-bottom:14px}
.field label{display:block;font-size:13px;font-weight:600;margin-bottom:6px;color:var(--ink)}
.field input,.field select{width:100%;padding:11px 13px;border:1.5px solid var(--line-2);border-radius:9px;font-family:inherit;font-size:15px;background:var(--surface);color:var(--ink)}
.field input:focus,.field select:focus{border-color:var(--brand);outline:none}
.frow{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.result{margin-top:16px;padding:16px 18px;border-radius:11px;background:var(--brand-tint);border:1px solid var(--brand-soft);display:none}
.result.show{display:block}
.result .big{font-size:26px;font-weight:800;color:var(--brand);font-family:var(--serif)}
.result .rl{font-size:13px;color:var(--muted)}
.result ul{margin:10px 0 0;padding-left:18px;font-size:13.5px;color:var(--muted)}

/* finder quiz */
.quiz-step{display:none}
.quiz-step.active{display:block}
.opts{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:6px}
.opts button{border:1.5px solid var(--line-2);background:var(--surface);border-radius:10px;padding:14px;font-weight:600;font-size:14px;
  color:var(--ink);text-align:left;transition:.2s}
.opts button:hover,.opts button.sel{border-color:var(--brand);background:var(--brand-tint);color:var(--brand)}
.q-prog{font-size:12.5px;color:var(--faint);font-weight:600;margin-bottom:10px}

/* dealer */
.dealer-wrap{display:grid;grid-template-columns:.9fr 1.1fr;gap:20px;align-items:start}
.dealer-list{display:flex;flex-direction:column;gap:12px;max-height:340px;overflow-y:auto}
.dealer-item{background:var(--surface);border:1px solid var(--line);border-radius:11px;padding:15px 17px}
.dealer-item h4{margin:0 0 3px;font-size:15px}
.dealer-item .d-meta{font-size:13px;color:var(--muted)}
.dealer-item .d-call{display:inline-flex;gap:6px;align-items:center;margin-top:8px;font-weight:700;font-size:13.5px;color:var(--brand)}
.map-fake{border-radius:var(--r);border:1px solid var(--line);min-height:340px;background:
  linear-gradient(var(--surface-3) 1px,transparent 1px) 0 0/100% 34px,
  linear-gradient(90deg,var(--surface-3) 1px,transparent 1px) 0 0/34px 100%,var(--surface);
  position:relative;display:grid;place-items:center;color:var(--faint);font-size:13px;text-align:center;padding:20px}
.map-fake .pin{position:absolute;width:16px;height:16px;border-radius:50% 50% 50% 0;background:var(--brand);transform:rotate(-45deg);box-shadow:var(--shadow-sm)}
.buy-flex{display:grid;grid-template-columns:1.3fr .7fr;gap:24px;align-items:center}
.buy-note{background:var(--brand-tint);border:1px solid var(--brand-soft);border-radius:12px;padding:16px 18px}
.buy-note .bn-h{font-weight:700;font-size:14px;margin-bottom:6px;color:var(--brand)}
.buy-note p{font-size:13px;color:var(--muted)}
@media(max-width:760px){.buy-flex{grid-template-columns:1fr}}

/* colors */
.color-filter{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:20px}
.color-filter button{border:1.5px solid var(--line-2);background:var(--surface);border-radius:999px;padding:7px 15px;font-size:13px;font-weight:600;color:var(--muted)}
.color-filter button[aria-pressed="true"]{background:var(--brand);color:var(--brand-ink);border-color:var(--brand)}
.swatch-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:12px}
.chip{border-radius:12px;overflow:hidden;border:1px solid var(--line);background:var(--surface);text-align:left;transition:.2s}
.chip:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
.chip .col{height:78px}
.chip .ci{padding:9px 11px}
.chip .cn{font-size:12.5px;font-weight:700}
.chip .cc{font-size:11px;color:var(--faint);font-family:var(--serif)}
.chip.active{outline:2.5px solid var(--brand);outline-offset:1px}
/* color mixer */
.mixer{display:grid;grid-template-columns:1.05fr .95fr;gap:24px;align-items:start;margin-bottom:26px}
.room{border-radius:var(--r);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-sm);background:var(--surface)}
.room svg{display:block;width:100%;height:auto}
.mix-ctrl .target-row{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:14px}
.target-row button{border:1.5px solid var(--line-2);background:var(--surface);border-radius:9px;padding:9px 14px;font-weight:600;font-size:13.5px;color:var(--muted);display:flex;gap:8px;align-items:center}
.target-row button[aria-pressed="true"]{border-color:var(--brand);color:var(--brand);background:var(--brand-tint)}
.target-row .dab{width:15px;height:15px;border-radius:4px;border:1px solid rgba(0,0,0,.15)}
.mix-save{display:flex;gap:10px;flex-wrap:wrap;margin-top:16px}
.mix-hint{font-size:12.5px;color:var(--faint);margin-bottom:12px}

/* trust / proof */
.proof-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:26px;align-items:start}
.timeline{border-left:2px solid var(--line-2);padding-left:22px;display:flex;flex-direction:column;gap:20px}
.tl-item{position:relative}
.tl-item::before{content:"";position:absolute;left:-29px;top:4px;width:12px;height:12px;border-radius:50%;background:var(--brand);border:3px solid var(--surface-2)}
.tl-yr{font-family:var(--serif);font-weight:600;color:var(--brand);font-size:18px}
.tl-item p{font-size:14px;color:var(--muted);margin-top:2px}
.certs{display:flex;flex-direction:column;gap:14px}
.cert{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:16px 18px;display:flex;gap:14px;align-items:center;box-shadow:var(--shadow-sm)}
.cert .qr{width:52px;height:52px;border-radius:8px;flex:0 0 auto;background:
  repeating-conic-gradient(var(--ink) 0 25%, var(--surface) 0 50%) 0 0/13px 13px;border:3px solid var(--surface)}
.cert h4{margin:0 0 2px;font-size:14.5px}
.cert p{font-size:12.5px;color:var(--faint)}
.photo-ph{border-radius:var(--r);border:1px dashed var(--line-2);background:var(--surface-3);min-height:150px;
  display:grid;place-items:center;text-align:center;color:var(--faint);font-size:12.5px;padding:16px;margin-top:16px}

/* dealer CTA / become */
.become{background:var(--brand);color:var(--brand-ink);border-radius:20px;overflow:hidden;transition:background .35s}
.become .bin{padding:44px;display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:center}
.become h2{font-size:clamp(24px,3vw,32px);color:#fff}
.become .lead{opacity:.9;margin:14px 0 22px;font-size:16px}
.steps4{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.step4{background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.16);border-radius:12px;padding:16px}
.step4 .n{font-family:var(--serif);font-size:22px;color:var(--brand-2)}
.step4 h4{margin:4px 0 2px;font-size:15px;color:#fff}
.step4 p{font-size:12.5px;opacity:.82}

/* lead form */
.lead{background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:34px;box-shadow:var(--shadow-md)}
.who-tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:20px}
.who-tabs button{border:1.5px solid var(--line-2);background:var(--surface);border-radius:10px;padding:10px 16px;font-weight:700;font-size:14px;color:var(--muted);display:inline-flex;gap:8px;align-items:center}
.who-tabs button[aria-pressed="true"]{border-color:var(--brand);background:var(--brand-tint);color:var(--brand)}

/* footer */
footer{background:var(--brand);color:var(--brand-ink);transition:background .35s}
footer .wrap{padding:48px 22px 30px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}
footer h4{font-size:14px;margin:0 0 12px;color:#fff;letter-spacing:.02em}
footer a,footer p{color:rgba(255,255,255,.82);font-size:13.5px;display:block;margin-bottom:7px}
footer a:hover{color:#fff}
.foot-bottom{border-top:1px solid rgba(255,255,255,.15);margin-top:30px;padding-top:18px;font-size:12.5px;opacity:.7;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}

/* sticky mobile */
.sticky-cta{position:fixed;bottom:0;left:0;right:0;z-index:60;display:none;gap:1px;background:var(--line)}
.sticky-cta a{flex:1;text-align:center;padding:14px;font-weight:700;font-size:14.5px;background:var(--surface);color:var(--brand);display:flex;gap:7px;align-items:center;justify-content:center}
.sticky-cta a.zalo{background:var(--brand);color:var(--brand-ink)}
/* floating contact */
.float-contact{position:fixed;right:16px;bottom:24px;z-index:55;display:flex;flex-direction:column;gap:14px}
.fc-btn{position:relative;width:56px;height:56px;border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;box-shadow:0 6px 20px rgba(0,0,0,.28);transition:transform .2s}
.fc-btn:hover{transform:scale(1.07)}
.fc-btn svg{width:28px;height:28px;position:relative;z-index:2}
.fc-zalo{background:#0068FF;font-weight:800;font-size:15px;letter-spacing:.02em}
.fc-zalo .fc-txt{position:relative;z-index:2}
.fc-call{background:#16A34A}
.fc-lbl{position:absolute;right:66px;white-space:nowrap;background:#12213F;color:#fff;padding:7px 13px;border-radius:8px;font-size:13.5px;font-weight:700;opacity:0;pointer-events:none;transform:translateX(8px);transition:.2s;box-shadow:0 4px 14px rgba(0,0,0,.22)}
.fc-btn:hover .fc-lbl{opacity:1;transform:translateX(0)}
.fc-call .fc-ring{position:absolute;inset:0;border-radius:50%;background:#16A34A;z-index:1;animation:fcpulse 1.6s ease-out infinite}
@keyframes fcpulse{0%{transform:scale(1);opacity:.55}70%{transform:scale(1.9);opacity:0}100%{opacity:0}}
@media(max-width:768px){.float-contact{bottom:78px;right:12px}.fc-btn{width:50px;height:50px}.fc-btn svg{width:25px;height:25px}.fc-lbl{display:none}}
/* blog */
.blog-filter{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:24px}
.blog-filter button{border:1.5px solid var(--line-2);background:var(--surface);border-radius:999px;padding:8px 15px;font-size:13px;font-weight:600;color:var(--muted);cursor:pointer;transition:.2s}
.blog-filter button[aria-pressed="true"]{background:var(--brand);color:var(--brand-ink);border-color:var(--brand)}
.blog-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.bcard{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;text-align:left;cursor:pointer;transition:.2s;box-shadow:var(--shadow-sm);display:flex;flex-direction:column}
.bcard:hover{transform:translateY(-3px);border-color:var(--brand);box-shadow:var(--shadow-md)}
.bcard .bstripe{height:6px;background:var(--brand)}
.bcard .bin{padding:18px;display:flex;flex-direction:column;gap:8px;flex:1}
.bcat{align-self:flex-start;font-size:11px;font-weight:700;padding:3px 9px;border-radius:999px;font-family:var(--font);background:var(--brand-tint);color:var(--brand)}
.bcat.suco{background:#F7E9E7;color:#8A1E2B}.bcat.mau{background:#EDF2DD;color:#46621F}.bcat.niemtin{background:rgba(184,135,59,.15);color:#8a6520}.bcat.daily{background:#E4EBF2;color:#003057}.bcat.nhucau{background:#E6F1E9;color:#2C6B47}
.bcard h3{font-size:16.5px;line-height:1.3}
.bcard .bex{font-size:13px;color:var(--muted);flex:1}
.bcard .bmore{font-size:13px;font-weight:700;color:var(--brand);margin-top:2px}
.article-body{font-size:15px;line-height:1.75}
.article-body h4{font-family:var(--font);font-weight:700;font-size:15px;margin:16px 0 6px}
.article-body p{margin:0 0 12px;color:var(--ink)}
.article-body ul{margin:8px 0 12px;padding-left:20px;color:var(--muted)}
.article-body li{margin-bottom:5px}
.article-body .abox{border-left:3px solid var(--brand-2);background:var(--surface-2);border-radius:0 10px 10px 0;padding:12px 15px;margin:12px 0;font-size:13.5px;color:var(--muted)}
.article-body .abox b{color:var(--ink)}

/* modal / toast */
.modal-bg{position:fixed;inset:0;background:rgba(10,12,20,.55);z-index:100;display:none;padding:20px;overflow-y:auto}
.modal-bg.show{display:grid;place-items:start center}
.modal{background:var(--surface);border-radius:18px;max-width:640px;width:100%;margin:40px 0;box-shadow:var(--shadow-md);overflow:hidden}
.modal .m-top{height:10px;background:var(--brand)}
.modal .m-in{padding:28px}
.modal .m-close{float:right;border:0;background:var(--surface-3);width:34px;height:34px;border-radius:9px;font-size:18px;color:var(--muted)}
.modal h3{font-size:22px;margin-bottom:4px}
.spec-table{width:100%;border-collapse:collapse;margin:16px 0;font-size:14px}
.spec-table td{padding:9px 4px;border-bottom:1px solid var(--line)}
.spec-table td:first-child{color:var(--muted);width:52%}
.spec-table td:last-child{font-weight:600;text-align:right}
.ph-badge{display:inline-block;font-size:11px;font-weight:700;color:var(--warn);background:color-mix(in srgb,var(--warn) 15%,transparent);padding:2px 8px;border-radius:6px}
.toast{position:fixed;left:50%;bottom:30px;transform:translateX(-50%) translateY(20px);background:var(--ink);color:var(--bg);
  padding:13px 22px;border-radius:11px;font-size:14px;font-weight:600;z-index:200;opacity:0;transition:.3s;pointer-events:none;box-shadow:var(--shadow-md);max-width:90vw}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

.hub-only{display:block}
[data-brand="apecus"] .hub-only,[data-brand="usgreen"] .hub-only{display:none}
[data-brand="apecus"] .brandband,[data-brand="usgreen"] .brandband{display:block}

/* ============ RESPONSIVE ============ */
@media(max-width:1000px){
  .hero .wrap{grid-template-columns:1fr;gap:30px}
  .hero-art{max-width:380px}
  .problems{grid-template-columns:repeat(3,1fr)}
  .trust .wrap{grid-template-columns:1fr 1fr}
  .trust .item:nth-child(3){border-left:0}
}
@media(max-width:760px){
  nav.menu{display:none}
  .hamb{display:block}
  .nav .btn.desk{display:none}
  .prod-grid,.swatch-grid{grid-template-columns:1fr 1fr}
  .tools-grid,.duo,.dealer-wrap,.proof-grid,.become .bin,.foot-grid,.opts,.frow{grid-template-columns:1fr}
  .problems{grid-template-columns:1fr 1fr}
  .steps4{grid-template-columns:1fr}
  .sticky-cta{display:flex}
  body{padding-bottom:52px}
  .brandband .bb-in{grid-template-columns:1fr;text-align:center;justify-items:center}
  .block{padding:46px 0}
}
@media(max-width:430px){.swatch-grid{grid-template-columns:1fr 1fr}.problems{grid-template-columns:1fr}}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}

/* ============ HUBS (chuyên trang) ============ */
.hubnav{display:flex;gap:4px;margin-left:auto;flex-wrap:wrap}
.hubnav a{color:var(--muted);font-weight:600;font-size:14px;padding:8px 11px;border-radius:8px;white-space:nowrap}
.hubnav a:hover,.hubnav a.cur{color:var(--brand);background:var(--brand-tint)}
.hubnav a.cur{color:var(--brand)}
.hub-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);
  background:radial-gradient(120% 130% at 85% -10%,var(--brand-soft) 0%,transparent 55%),var(--surface-2)}
.hub-hero .wrap{padding:52px 22px 44px;display:grid;grid-template-columns:1fr auto;gap:30px;align-items:center}
.hub-hero .hh-ic{font-size:40px;line-height:1}
.hub-hero h1{font-size:clamp(27px,4.2vw,42px);margin:14px 0 0}
.hub-hero h1 em{font-family:var(--serif);font-style:italic;font-weight:500;color:var(--brand)}
.hub-hero .lead{font-size:clamp(15.5px,1.8vw,18px);color:var(--muted);margin:16px 0 0;max-width:62ch}
.hub-hero .hh-cta{display:flex;gap:11px;flex-wrap:wrap;margin-top:22px}
.hub-hero .hh-badge{width:116px;height:116px;border-radius:26px;background:var(--brand);color:#fff;display:grid;place-items:center;box-shadow:var(--shadow-md);flex:0 0 auto}
.hub-hero .hh-badge span{font-size:58px}
@media(max-width:760px){.hub-hero .wrap{grid-template-columns:1fr}.hub-hero .hh-badge{display:none}}
.crumbs{font-size:13px;color:var(--faint);margin-bottom:4px}
.crumbs a{color:var(--muted);font-weight:600}
.crumbs a:hover{color:var(--brand)}
.hub-toc{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:20px 22px;margin-bottom:30px;box-shadow:var(--shadow-sm)}
.hub-toc h2{font-size:16px;margin-bottom:12px}
.hub-toc ol{margin:0;padding-left:20px;columns:2;column-gap:28px}
.hub-toc li{margin-bottom:7px;font-size:14px;break-inside:avoid}
.hub-toc a{color:var(--ink);font-weight:600}
.hub-toc a:hover{color:var(--brand)}
@media(max-width:620px){.hub-toc ol{columns:1}}
.hub-art{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:26px 28px;margin-bottom:22px;box-shadow:var(--shadow-sm);scroll-margin-top:84px}
.hub-art>.bcat{margin-bottom:10px}
.hub-art h2{font-size:clamp(20px,2.6vw,26px);margin-bottom:6px}
.hub-art .art-ex{color:var(--muted);font-size:15px;margin-bottom:14px}
.hub-art .article-body{border-top:1px solid var(--line);padding-top:16px}
.hub-cross{display:grid;grid-template-columns:repeat(auto-fit,minmax(185px,1fr));gap:12px;margin-top:8px}
.hub-cross a{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:16px;text-align:left;transition:.2s;box-shadow:var(--shadow-sm);display:block}
.hub-cross a:hover{border-color:var(--brand);transform:translateY(-3px);box-shadow:var(--shadow-md)}
.hub-cross .hc-ic{font-size:24px}
.hub-cross .hc-t{font-weight:700;font-size:15px;margin:7px 0 2px;color:var(--ink)}
.hub-cross .hc-d{font-size:12.5px;color:var(--muted)}
@media(max-width:860px){.hub-cross{grid-template-columns:1fr 1fr}}
@media(max-width:460px){.hub-cross{grid-template-columns:1fr}}
.hub-cards{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}
@media(max-width:900px){.hub-cards{grid-template-columns:repeat(3,1fr)}}
@media(max-width:600px){.hub-cards{grid-template-columns:1fr 1fr}}
.faq-q{font-weight:700;font-size:16px;margin:16px 0 4px;color:var(--ink)}
.faq-a{color:var(--muted);font-size:14.5px;margin-bottom:6px}