/* =============================================================
   KIÊN TRUNG - Mỹ Thuật Quảng Cáo
   Stylesheet: assets/css/style.css
   ============================================================= */

/* ---------- 1. Tokens ---------- */
:root{
  /* Vàng kim lấy từ ánh sáng hắt sau chữ nổi trên logo */
  --brand:#e0a52a;
  --brand-600:#c78e1c;
  --brand-700:#a5731a;
  --brand-soft:#fdf3df;
  --brand-ink:#8a6212;      /* vàng đã tối đủ để làm chữ trên nền sáng */
  --on-brand:#1a1206;       /* chữ đặt trên nền vàng */
  --glow:#ffd873;           /* quầng sáng quanh chữ nổi */

  /* Xám thép lấy từ mặt inox của logo */
  --steel-1:#f2f4f7;
  --steel-2:#b9c0c9;
  --steel-3:#6e7681;

  --ink:#14171d;
  --ink-2:#1c2029;
  --ink-3:#2a303b;

  --text:#1f232b;
  --muted:#646c78;
  --line:#e7e8ec;
  --bg:#ffffff;
  --bg-alt:#f6f7f9;

  --radius:14px;
  --radius-lg:22px;
  --shadow-sm:0 1px 2px rgba(20,23,29,.06),0 4px 12px rgba(20,23,29,.05);
  --shadow:0 10px 30px rgba(20,23,29,.08);
  --shadow-lg:0 24px 60px rgba(20,23,29,.16);
  --container:1200px;

  --font:-apple-system,BlinkMacSystemFont,"Segoe UI","Be Vietnam Pro",Roboto,"Helvetica Neue",Arial,sans-serif;
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- 2. Reset & base ---------- */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;font-family:var(--font);color:var(--text);background:var(--bg);
  font-size:16px;line-height:1.65;-webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;line-height:1.2;color:var(--ink);letter-spacing:-.02em;font-weight:800}
p{margin:0}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
svg{width:100%;height:100%;fill:currentColor}
.ico{width:16px;height:16px;flex:0 0 auto}

.container{width:100%;max-width:var(--container);margin-inline:auto;padding-inline:20px}
.container--narrow{max-width:840px}

.skip-link{position:absolute;left:-9999px;top:0;background:var(--brand);color:var(--on-brand);padding:10px 16px;z-index:999}
.skip-link:focus{left:8px;top:8px}
:focus-visible{outline:3px solid var(--brand);outline-offset:2px;border-radius:6px}

/* ---------- 3. Buttons ---------- */
.btn{
  --btn-bg:var(--brand);--btn-fg:var(--on-brand);
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:999px;font-weight:700;font-size:15px;
  background:var(--btn-bg);color:var(--btn-fg);
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease),color .18s var(--ease);
  white-space:nowrap;
}
.btn svg{width:18px;height:18px;flex:0 0 auto}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(0)}
.btn--primary{background:linear-gradient(135deg,#efc255,var(--brand));color:var(--on-brand);box-shadow:0 8px 22px rgba(224,165,42,.35)}
.btn--primary:hover{background:linear-gradient(135deg,var(--brand),var(--brand-600));box-shadow:0 12px 30px rgba(224,165,42,.45)}
.btn--ghost{background:rgba(255,255,255,.08);color:#fff;border:1px solid rgba(255,255,255,.28);backdrop-filter:blur(6px)}
.btn--ghost:hover{background:rgba(255,255,255,.16)}
.btn--light{background:#fff;color:var(--brand-ink);box-shadow:var(--shadow)}
.btn--outline{background:transparent;color:var(--brand-ink);border:2px solid var(--brand)}
.btn--outline:hover{background:var(--brand);color:var(--on-brand)}
.btn--outline-light{background:transparent;color:#fff;border:2px solid rgba(255,255,255,.4)}
.btn--outline-light:hover{background:#fff;color:var(--ink)}
.btn--lg{padding:15px 30px;font-size:16px}
.btn--sm{padding:9px 16px;font-size:13.5px}
.btn--block{width:100%}

/* ---------- 4. Topbar ---------- */
.topbar{background:var(--ink);color:rgba(255,255,255,.75);font-size:13.5px}
.topbar__inner{display:flex;align-items:center;justify-content:space-between;gap:16px;height:42px}
.topbar__left,.topbar__right{display:flex;align-items:center;gap:22px}
.topbar__item{display:inline-flex;align-items:center;gap:7px}
.topbar__item a{transition:color .2s}
.topbar__item a:hover{color:var(--glow)}
.topbar__hot{display:inline-flex;align-items:center;gap:7px;color:var(--glow);font-weight:700}
.topbar__social{display:flex;gap:8px}
.topbar__social a{width:26px;height:26px;display:grid;place-items:center;border-radius:50%;background:rgba(255,255,255,.1);transition:background .2s}
.topbar__social a svg{width:14px;height:14px}
.topbar__social a:hover{background:var(--brand);color:var(--on-brand)}

/* ---------- 5. Header ---------- */
.header{
  position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);
  backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid var(--line);
  transition:box-shadow .25s var(--ease);
}
.header.is-stuck{box-shadow:0 6px 24px rgba(20,23,29,.08)}
.header__inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:76px}

.brand{display:inline-flex;align-items:center;gap:11px}
.brand__mark{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(150deg,#2f3540,#171a20);color:var(--glow);font-weight:900;letter-spacing:.5px;
  box-shadow:0 6px 16px rgba(20,23,29,.3),0 0 18px rgba(255,216,115,.35);
  text-shadow:0 0 10px rgba(255,216,115,.85);font-size:17px;
}
.brand__text{display:flex;flex-direction:column;line-height:1.15}
.brand__text strong{font-size:18px;letter-spacing:.04em;color:var(--ink)}
.brand__text small{font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);white-space:nowrap}
.brand--light .brand__text strong{color:#fff}
.brand--light .brand__text small{color:rgba(255,255,255,.6)}

.nav{display:flex;align-items:center;gap:28px;margin-left:auto}
.nav__list{display:flex;align-items:center;gap:4px}
.nav__link{
  position:relative;padding:10px 14px;border-radius:10px;font-weight:600;font-size:15px;color:var(--text);
  transition:color .2s,background .2s;
}
.nav__link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:5px;height:2px;border-radius:2px;
  background:var(--brand-600);transform:scaleX(0);transform-origin:left;transition:transform .25s var(--ease);
}
.nav__link:hover{color:var(--brand-ink)}
.nav__link:hover::after,.nav__link.is-active::after{transform:scaleX(1)}
.nav__link.is-active{color:var(--brand-ink)}

.header__actions{display:flex;align-items:center;gap:10px}
.cart-btn{position:relative;width:44px;height:44px;border-radius:12px;display:grid;place-items:center;background:var(--bg-alt);color:var(--ink);transition:background .2s}
.cart-btn svg{width:21px;height:21px}
.cart-btn:hover{background:var(--brand-soft);color:var(--brand-ink)}
.cart-btn__count{
  position:absolute;top:-4px;right:-4px;min-width:19px;height:19px;padding:0 5px;border-radius:999px;
  background:var(--brand);color:var(--on-brand);font-size:11px;font-weight:800;display:grid;place-items:center;border:2px solid #fff;
}
.burger{display:none;width:44px;height:44px;border-radius:12px;background:var(--bg-alt);padding:12px}
.burger span{display:block;height:2px;background:var(--ink);border-radius:2px;transition:transform .25s var(--ease),opacity .2s}
.burger span+span{margin-top:5px}
.burger.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger.is-open span:nth-child(2){opacity:0}
.burger.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- 6. Hero slider (Swiper) ---------- */
.hero{position:relative;background:var(--ink);color:#fff}
.hero-swiper{position:relative;overflow:hidden}
.hero-swiper .swiper-wrapper{align-items:stretch}
/* fallback: nếu Swiper không tải được, chỉ hiện slide đầu tiên */
.hero-swiper:not(.swiper-initialized) .swiper-slide:not(:first-child),
.hero-swiper:not(.swiper-initialized) .hero-swiper__nav,
.hero-swiper:not(.swiper-initialized) .hero-swiper__bar,
.hero-swiper:not(.swiper-initialized) .hero-swiper__progress{display:none}

.hslide{position:relative;display:flex;align-items:flex-end;overflow:hidden;min-height:clamp(500px,70vh,660px)}
.hslide__bg{position:absolute;inset:0;z-index:0;background:linear-gradient(160deg,#14171d,#242a34)}
.hslide__img{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;
  transform:scale(1.02);transition:transform 8s linear;
}
.hero-swiper .swiper-slide-active .hslide__img{transform:scale(1.1)}
/* lớp phủ tối để chữ luôn đọc được trên ảnh */
.hslide__bg::after{
  content:"";position:absolute;inset:0;z-index:1;
  background:linear-gradient(95deg,rgba(16,18,23,.92) 0%,rgba(16,18,23,.76) 42%,rgba(16,18,23,.36) 100%),
             linear-gradient(0deg,rgba(16,18,23,.88) 0%,rgba(16,18,23,0) 45%);
}

.hslide__inner{position:relative;z-index:2;width:100%;padding-block:92px 132px}
.hslide__inner--cap{padding-block:0 132px}

.hslide__title{font-size:clamp(34px,4.9vw,58px);color:#fff;margin:0 0 26px;letter-spacing:-.03em;max-width:680px}
.grad{background:linear-gradient(100deg,#fff0c2 0%,var(--glow) 40%,var(--brand) 100%);-webkit-background-clip:text;background-clip:text;color:transparent}
.hslide__actions{display:flex;flex-wrap:wrap;gap:12px}

/* Caption gọn cho các slide ảnh dự án */
.hslide__tag{
  display:inline-block;padding:6px 14px;border-radius:999px;margin-bottom:14px;
  background:var(--brand);color:var(--on-brand);font-size:12.5px;font-weight:800;
  letter-spacing:.1em;text-transform:uppercase;
}
.hslide__cap{
  font-size:clamp(21px,2.7vw,32px);font-weight:800;color:#fff;letter-spacing:-.01em;
  max-width:620px;line-height:1.3;text-shadow:0 2px 18px rgba(0,0,0,.5);
}

/* Hiệu ứng nội dung vào slide - chỉ bật khi Swiper đã khởi tạo */
.hero-swiper.is-ready .hslide__inner > *{opacity:0;transform:translateY(26px)}
.hero-swiper.is-ready .swiper-slide-active .hslide__inner > *{
  opacity:1;transform:none;transition:opacity .65s var(--ease),transform .65s var(--ease);
}
.hero-swiper.is-ready .swiper-slide-active .hslide__inner > *:nth-child(1){transition-delay:.12s}
.hero-swiper.is-ready .swiper-slide-active .hslide__inner > *:nth-child(2){transition-delay:.22s}
.hero-swiper.is-ready .swiper-slide-active .hslide__inner > *:nth-child(3){transition-delay:.32s}
.hero-swiper.is-ready .swiper-slide-active .hslide__inner > *:nth-child(4){transition-delay:.42s}

/* Điều hướng */
.hero-swiper__nav{
  position:absolute;top:50%;z-index:10;transform:translateY(-50%);
  width:52px;height:52px;border-radius:50%;display:grid;place-items:center;color:#fff;
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.24);backdrop-filter:blur(6px);
  transition:background .2s,border-color .2s,transform .2s var(--ease);
}
.hero-swiper__nav svg{width:22px;height:22px}
.hero-swiper__nav:hover{background:var(--brand);border-color:var(--brand);color:var(--on-brand)}
.hero-swiper__nav--prev{left:26px}
.hero-swiper__nav--next{right:26px}
.hero-swiper__nav--prev:hover{transform:translateY(-50%) scale(1.06)}
.hero-swiper__nav--next:hover{transform:translateY(-50%) scale(1.06)}

.hero-swiper__bar{
  position:absolute;left:50%;bottom:36px;transform:translateX(-50%);z-index:10;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
}
.hero-swiper__pagination{display:flex;align-items:center;gap:9px}
.hero-swiper__pagination .swiper-pagination-bullet{
  width:26px;height:4px;border-radius:99px;background:rgba(255,255,255,.32);opacity:1;margin:0;
  transition:width .3s var(--ease),background .3s;
}
.hero-swiper__pagination .swiper-pagination-bullet-active{width:48px;background:var(--brand)}
.hero-swiper__counter{flex:0 0 auto;white-space:nowrap;font-size:13.5px;letter-spacing:.1em;color:rgba(255,255,255,.5);font-weight:600}
.hero-swiper__counter b{color:#fff;font-size:18px;font-weight:900}

.hero-swiper__progress{position:absolute;left:0;right:0;bottom:0;height:3px;background:rgba(255,255,255,.12);z-index:10}
.hero-swiper__progress i{
  display:block;height:100%;width:100%;transform:scaleX(0);transform-origin:left;
  background:linear-gradient(90deg,var(--brand),var(--glow));
}

/* Dải số liệu dưới slider */
.hero-stats{background:var(--ink-2);border-top:1px solid rgba(255,255,255,.08)}
.hero-stats__inner{display:flex;align-items:center;flex-wrap:wrap;gap:16px 44px;padding-block:22px}
.hero-stats b{display:block;font-size:30px;font-weight:900;color:#fff;line-height:1.1}
.hero-stats span{font-size:13.5px;color:rgba(255,255,255,.6)}
.hero-stats__note{display:flex;align-items:center;gap:10px;margin-left:auto;flex:0 1 340px;min-width:0;color:rgba(255,255,255,.62);font-size:14px}
.hero-stats__note svg{width:20px;height:20px;color:var(--glow);flex:0 0 auto}

/* ---------- 8. Section shell ---------- */
.section{padding:92px 0}
.section--alt{background:var(--bg-alt)}
.section--dark{background:linear-gradient(180deg,#14171d,#232830);color:#fff}
.section--dark .section__title,.section--dark h3{color:#fff}
.section--dark .section__desc{color:rgba(255,255,255,.66)}

.section__head{max-width:720px;margin:0 auto 52px;text-align:center}
.section__head--row{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;max-width:none;text-align:left}
.section__title{font-size:clamp(27px,3.4vw,42px)}
.section__desc{color:var(--muted);font-size:16.5px;margin-top:14px}
.section__foot{margin-top:46px;text-align:center}

.eyebrow{
  display:inline-block;color:var(--brand-ink);font-weight:800;font-size:13px;letter-spacing:.16em;
  text-transform:uppercase;margin-bottom:12px;
}
.eyebrow--light{color:var(--glow)}

.grid{display:grid;gap:26px}
.grid--3{grid-template-columns:repeat(3,1fr)}
.grid--4{grid-template-columns:repeat(4,1fr)}

/* ---------- 9. Service cards ---------- */
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:32px 28px;transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s}
.card--service{position:relative;overflow:hidden}
.card--service::after{
  content:"";position:absolute;inset:auto -40px -60px auto;width:160px;height:160px;border-radius:50%;
  background:radial-gradient(circle,rgba(224,165,42,.16),transparent 70%);opacity:0;transition:opacity .35s;
}
.card--service:hover{transform:translateY(-8px);box-shadow:var(--shadow);border-color:transparent}
.card--service:hover::after{opacity:1}
.card__icon{
  width:56px;height:56px;border-radius:16px;display:grid;place-items:center;margin-bottom:20px;
  background:linear-gradient(140deg,var(--brand-soft),#fffaf0);color:var(--brand-ink);
}
.card__icon svg{width:27px;height:27px}
.card h3{font-size:20px;margin-bottom:10px}
.card p{color:var(--muted);font-size:15px}
.card__list{margin:16px 0 20px;display:flex;flex-direction:column;gap:7px}
.card__list li{position:relative;padding-left:22px;font-size:14.5px;color:var(--text)}
.card__list li::before{
  content:"";position:absolute;left:0;top:8px;width:11px;height:11px;border-radius:50%;
  background:var(--brand-soft);border:2px solid var(--brand-600);
}
.card__link{display:inline-flex;align-items:center;gap:7px;color:var(--brand-ink);font-weight:700;font-size:14.5px;position:relative;z-index:1}
.card__link span{transition:transform .2s var(--ease)}
.card__link:hover span{transform:translateX(5px)}

/* ---------- 10. Why us ---------- */
.why{display:grid;grid-template-columns:1fr 1.05fr;gap:64px;align-items:center}
.why__media{position:relative}
.why__frame{display:grid;grid-template-columns:1.15fr .85fr;gap:16px}
.why__shot{
  position:relative;border-radius:var(--radius-lg);min-height:200px;display:flex;align-items:flex-end;padding:20px;
  color:#fff;box-shadow:var(--shadow);overflow:hidden;
}
.why__shot img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.why__shot span{font-size:14px;font-weight:700;position:relative;z-index:1;text-shadow:0 2px 10px rgba(0,0,0,.5)}
.why__shot::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 40%,rgba(0,0,0,.55))}
.why__shot--a{min-height:320px;background:linear-gradient(150deg,#243350,#131f36)}

.why__shot--b{align-self:end;min-height:210px;background:linear-gradient(150deg,#3a2118,#5a2c1d)}

.why__stat{
  position:absolute;right:0;top:0;background:#fff;border-radius:18px;padding:18px 20px;
  box-shadow:var(--shadow-lg);display:flex;align-items:center;gap:13px;width:min(240px,42%);
}
.why__stat b{font-size:34px;font-weight:900;color:var(--brand-ink);line-height:1}
.why__stat span{font-size:13px;color:var(--muted);line-height:1.4}

.feature-list{display:flex;flex-direction:column;gap:20px;margin:28px 0 32px}
.feature-list li{display:flex;gap:14px}
.feature-list__ico{
  flex:0 0 auto;width:32px;height:32px;border-radius:50%;display:grid;place-items:center;
  background:var(--brand);color:var(--on-brand);box-shadow:0 6px 14px rgba(224,165,42,.35);
}
.feature-list__ico svg{width:17px;height:17px}
.feature-list b{display:block;font-size:16.5px;color:var(--ink)}
.feature-list p{color:var(--muted);font-size:14.5px;margin-top:3px}

/* ---------- 11. Steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;counter-reset:s}
.steps__item{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:34px 24px 28px;transition:transform .3s var(--ease),box-shadow .3s var(--ease)}
.steps__item:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.steps__item:not(:last-child)::after{
  content:"";position:absolute;top:44px;right:-16px;width:12px;height:12px;
  border-top:2px dashed var(--brand-600);border-right:2px dashed var(--brand-600);transform:rotate(45deg);opacity:.5;
}
.steps__num{
  display:inline-grid;place-items:center;width:48px;height:48px;border-radius:14px;margin-bottom:16px;
  background:linear-gradient(140deg,var(--ink),var(--ink-3));color:var(--glow);font-weight:900;font-size:16px;
}
.steps__item h3{font-size:18px;margin-bottom:8px}
.steps__item p{color:var(--muted);font-size:14.5px}

/* ---------- 12. Projects ---------- */
.filters{display:flex;flex-wrap:wrap;gap:8px}
.filters__btn{
  padding:9px 18px;border-radius:999px;font-size:14px;font-weight:600;
  background:rgba(255,255,255,.07);color:rgba(255,255,255,.72);border:1px solid rgba(255,255,255,.14);
  transition:all .2s var(--ease);
}
.filters__btn:hover{color:#fff;background:rgba(255,255,255,.14)}
.filters__btn.is-active{background:var(--brand);border-color:var(--brand);color:var(--on-brand);box-shadow:0 8px 20px rgba(224,165,42,.35)}

.proj{
  border-radius:var(--radius-lg);overflow:hidden;background:rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.1);transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s;
}
.proj:hover{transform:translateY(-8px);border-color:rgba(224,165,42,.6);box-shadow:0 22px 44px rgba(0,0,0,.4)}
.proj.is-hidden{display:none}
.proj__thumb{
  position:relative;aspect-ratio:4/3;display:grid;place-items:center;overflow:hidden;
  background:linear-gradient(150deg,var(--ink-3),var(--ink));
}
.proj__thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 45%,rgba(0,0,0,.5))}
.proj__img{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;
  transition:transform .5s var(--ease);
}
.proj:hover .proj__img{transform:scale(1.06)}
.proj__body{padding:20px 22px 24px}
.proj__body h3{font-size:17px;margin-bottom:5px}
.proj__body span{font-size:13.5px;color:rgba(255,255,255,.55)}

/* ---------- 13. Shop ---------- */
.product{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-lg);overflow:hidden;transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s;
}
.product:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:transparent}
.product__media{position:relative;aspect-ratio:1/1;display:grid;place-items:center;overflow:hidden;background:linear-gradient(150deg,var(--steel-1),var(--steel-2))}
.product__img{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;
  transition:transform .5s var(--ease);
}
.product:hover .product__img{transform:scale(1.05)}
.badge{
  position:absolute;top:12px;left:12px;z-index:2;padding:5px 11px;border-radius:999px;
  background:var(--ink);color:#fff;font-size:11.5px;font-weight:800;letter-spacing:.04em;
}
.badge--hot{background:var(--brand);color:var(--on-brand)}
.badge--new{background:var(--ink-3)}

.product__body{padding:18px 18px 20px;display:flex;flex-direction:column;flex:1}
.product__cat{font-size:12px;color:var(--brand-ink);font-weight:700;letter-spacing:.06em;text-transform:uppercase}
.product__name{font-size:15.5px;margin:7px 0 8px;line-height:1.4;font-weight:700}
.product__meta{display:flex;align-items:center;gap:7px;margin-bottom:14px}
.product__meta small{color:var(--muted);font-size:12.5px}
.stars{color:var(--brand);font-size:14px;letter-spacing:1px}
.product__foot{margin-top:auto;display:flex;flex-direction:column;align-items:stretch;gap:12px}
.product__price b{font-size:18px;color:var(--ink);font-weight:900}
.product__price del{font-size:13px;color:var(--muted);margin-left:6px}
.product__price small{font-size:12.5px;color:var(--muted);margin-left:3px}

/* ---------- 14. Testimonials ---------- */
.quote{margin:0;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:30px 28px;position:relative;transition:transform .3s var(--ease),box-shadow .3s var(--ease)}
.quote:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.quote blockquote{margin:14px 0 22px;font-size:15.5px;color:var(--text);line-height:1.7}
.quote blockquote::before{content:"\201C"}
.quote blockquote::after{content:"\201D"}
.quote figcaption{display:flex;align-items:center;gap:12px;padding-top:18px;border-top:1px solid var(--line)}
.avt{
  width:42px;height:42px;border-radius:50%;display:grid;place-items:center;font-weight:800;font-size:14px;
  background:linear-gradient(140deg,var(--ink),var(--ink-3));color:var(--glow);
}
.quote figcaption b{display:block;font-size:15px;color:var(--ink)}
.quote figcaption small{color:var(--muted);font-size:13px}

/* ---------- 14b. Slider logo khách hàng ---------- */
.clients{padding:78px 0 84px;background:var(--bg);border-top:1px solid var(--line)}
.clients .section__head{margin-bottom:40px}

.logo-swiper{
  overflow:hidden;padding:8px 0;
  -webkit-mask-image:linear-gradient(90deg,transparent 0,#000 8%,#000 92%,transparent 100%);
          mask-image:linear-gradient(90deg,transparent 0,#000 8%,#000 92%,transparent 100%);
}
/* chạy đều tay thay vì giật từng nấc */
.logo-swiper .swiper-wrapper{transition-timing-function:linear!important;align-items:center}
.logo-slide{display:flex;justify-content:center;align-items:center;width:auto;height:auto}

.logo-item{
  display:flex;align-items:center;gap:12px;padding:14px 20px;border-radius:16px;
  border:1px solid transparent;filter:grayscale(1);opacity:.62;
  transition:opacity .3s var(--ease),filter .3s var(--ease),transform .3s var(--ease),
             border-color .3s,background .3s;
}
.logo-item:hover{
  opacity:1;filter:none;transform:translateY(-3px);
  background:var(--bg-alt);border-color:var(--line);
}
.logo-item__mark{
  flex:0 0 auto;width:46px;height:46px;border-radius:13px;display:grid;place-items:center;
  background:linear-gradient(150deg,#2f3540,#171a20);color:var(--glow);
  font-weight:900;font-size:14px;letter-spacing:.02em;
}
.logo-item__name{font-weight:800;font-size:15.5px;color:var(--ink);white-space:nowrap;letter-spacing:-.01em}
.logo-item img{max-height:46px;width:auto;object-fit:contain}

/* ---------- 15. Quote form ---------- */
.quote-sec{
  background:radial-gradient(800px 400px at 15% 15%,rgba(224,165,42,.22),transparent 60%),
             linear-gradient(160deg,#14171d,#242a34);
  color:#fff;
}
.quote-sec .section__title{color:#fff}
.quote-sec .section__desc{color:rgba(255,255,255,.68)}
.quote-sec__inner{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}

.contact-list{margin-top:34px;display:flex;flex-direction:column;gap:20px}
.contact-list li{display:flex;gap:14px;align-items:center}
.contact-list__ico{
  flex:0 0 auto;width:46px;height:46px;border-radius:14px;display:grid;place-items:center;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.15);color:var(--glow);
}
.contact-list__ico svg{width:20px;height:20px}
.contact-list small{display:block;font-size:12.5px;color:rgba(255,255,255,.5);text-transform:uppercase;letter-spacing:.08em}
.contact-list a,.contact-list span{font-size:16px;font-weight:700;color:#fff}
.contact-list a:hover{color:var(--glow)}
.contact-list .sep{margin:0 9px;font-weight:400;color:rgba(255,255,255,.35)}

.quote-form{background:#fff;border-radius:24px;padding:34px 32px;box-shadow:var(--shadow-lg);color:var(--text)}
.quote-form__title{font-size:21px;margin-bottom:22px}
.field{margin-bottom:16px;display:flex;flex-direction:column;gap:7px}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.field label{font-size:13.5px;font-weight:700;color:var(--ink)}
.field label i{color:#c0392b;font-style:normal}
.field input,.field select,.field textarea{
  font:inherit;font-size:15px;padding:12px 14px;border:1.5px solid var(--line);border-radius:12px;
  background:var(--bg-alt);color:var(--text);transition:border-color .2s,background .2s,box-shadow .2s;width:100%;
}
.field textarea{resize:vertical;min-height:96px}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);background:#fff;box-shadow:0 0 0 4px rgba(224,165,42,.18);
}
.field.has-err input{border-color:#e0342b;background:#fff5f4}
.field__err{font-size:12.5px;color:#d92d20;min-height:0}
.field.has-err .field__err{min-height:16px}
.quote-form__note{font-size:12.5px;color:var(--muted);text-align:center;margin-top:14px}
.quote-form__ok{
  margin-top:16px;padding:13px 16px;border-radius:12px;background:#e8f7ee;color:#0b7a3e;
  font-weight:700;font-size:14.5px;text-align:center;
}

/* ---------- 16. FAQ ---------- */
.faq{display:flex;flex-direction:column;gap:12px}
.faq__item{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:4px 22px;transition:border-color .2s,box-shadow .2s}
.faq__item[open]{border-color:rgba(224,165,42,.55);box-shadow:var(--shadow-sm)}
.faq__item summary{
  list-style:none;cursor:pointer;padding:16px 34px 16px 0;font-weight:700;font-size:16.5px;color:var(--ink);position:relative;
}
.faq__item summary::-webkit-details-marker{display:none}
.faq__item summary::after{
  content:"";position:absolute;right:2px;top:50%;width:10px;height:10px;margin-top:-7px;
  border-right:2px solid var(--brand-600);border-bottom:2px solid var(--brand-600);transform:rotate(45deg);transition:transform .25s var(--ease);
}
.faq__item[open] summary::after{transform:rotate(-135deg);margin-top:-3px}
.faq__item p{padding:0 0 18px;color:var(--muted);font-size:15px}

/* ---------- 17. CTA banner ---------- */
.cta{background:linear-gradient(110deg,var(--brand-700),var(--brand) 48%,var(--glow));color:var(--on-brand);padding:56px 0}
.cta__inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta h2{color:var(--on-brand);font-size:clamp(23px,2.8vw,32px)}
.cta p{color:rgba(26,18,6,.78);margin-top:8px}
.cta__actions{display:flex;gap:12px;flex-wrap:wrap}
/* trên dải vàng, nút viền phải chuyển sang tông tối mới đủ tương phản */
.cta .btn--outline-light{color:var(--on-brand);border-color:rgba(26,18,6,.42)}
.cta .btn--outline-light:hover{background:var(--on-brand);color:#fff;border-color:var(--on-brand)}

/* ---------- 18. Footer ---------- */
.footer{background:var(--ink);color:rgba(255,255,255,.66);padding-top:64px}
.footer__grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.footer__col h4{color:#fff;font-size:16px;margin-bottom:18px}
.footer__col ul{display:flex;flex-direction:column;gap:11px;font-size:14.5px}
.footer__col a:hover{color:var(--glow)}
.footer__col--brand p{font-size:14.5px;margin-top:16px;max-width:340px}
.footer__contact li{line-height:1.6}
.footer__social{display:flex;gap:10px;margin-top:20px}
.footer__social a{width:36px;height:36px;border-radius:10px;display:grid;place-items:center;background:rgba(255,255,255,.08);transition:background .2s,transform .2s}
.footer__social a svg{width:18px;height:18px}
.footer__social a:hover{background:var(--brand);color:var(--on-brand);transform:translateY(-3px)}
.footer__bottom{border-top:1px solid rgba(255,255,255,.1);padding:20px 0}
.footer__bottom-inner{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13.5px}
.footer__bottom a:hover{color:var(--glow)}

/* ---------- 19. Floating actions ---------- */
.floating{position:fixed;right:18px;bottom:18px;z-index:90;display:flex;flex-direction:column;gap:10px}
.floating__btn{
  width:50px;height:50px;border-radius:50%;display:grid;place-items:center;color:#fff;font-weight:800;font-size:13px;
  box-shadow:var(--shadow-lg);transition:transform .2s var(--ease);
}
.floating__btn svg{width:22px;height:22px}
.floating__btn:hover{transform:scale(1.08)}
.floating__btn--call{background:var(--brand);color:var(--on-brand);animation:ring 2.6s infinite}
.floating__btn--zalo{background:#0068ff}
.floating__btn--top{background:var(--ink);opacity:0;pointer-events:none;transition:opacity .3s,transform .2s}
.floating__btn--top.is-show{opacity:1;pointer-events:auto}
@keyframes ring{0%,100%{box-shadow:0 0 0 0 rgba(224,165,42,.6)}70%{box-shadow:0 0 0 16px rgba(224,165,42,0)}}

/* ---------- 20. Cart drawer ---------- */
.drawer{position:fixed;inset:0;z-index:200}
.drawer__overlay{position:absolute;inset:0;background:rgba(20,23,29,.55);backdrop-filter:blur(2px);animation:fade .25s var(--ease)}
.drawer__panel{
  position:absolute;right:0;top:0;height:100%;width:min(400px,92vw);background:#fff;display:flex;flex-direction:column;
  box-shadow:var(--shadow-lg);animation:slideIn .3s var(--ease);
}
@keyframes fade{from{opacity:0}to{opacity:1}}
@keyframes slideIn{from{transform:translateX(100%)}to{transform:translateX(0)}}
.drawer__head{display:flex;align-items:center;justify-content:space-between;padding:20px 22px;border-bottom:1px solid var(--line)}
.drawer__head h3{font-size:19px}
.drawer__close{font-size:28px;line-height:1;color:var(--muted);width:36px;height:36px;border-radius:10px}
.drawer__close:hover{background:var(--bg-alt);color:var(--ink)}
.drawer__body{flex:1;overflow-y:auto;padding:18px 22px}
.drawer__empty{color:var(--muted);text-align:center;padding:40px 0;font-size:15px}
.cart-item{display:flex;gap:12px;align-items:center;padding:12px 0;border-bottom:1px solid var(--line)}
.cart-item__thumb{width:52px;height:52px;border-radius:12px;background:linear-gradient(140deg,var(--ink),var(--ink-3));display:grid;place-items:center;color:var(--glow);font-weight:900;font-size:12px;flex:0 0 auto}
.cart-item__info{flex:1;min-width:0}
.cart-item__info b{display:block;font-size:14px;font-weight:700;line-height:1.35}
.cart-item__info span{font-size:13px;color:var(--muted)}
.cart-item__rm{color:var(--muted);font-size:20px;padding:4px 8px;border-radius:8px}
.cart-item__rm:hover{color:var(--brand-ink);background:var(--brand-soft)}
.drawer__foot{padding:18px 22px;border-top:1px solid var(--line)}
.drawer__total{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px;font-size:15px}
.drawer__total b{font-size:20px;color:var(--brand-ink);font-weight:900}

/* ---------- 21. Toast ---------- */
.toast{
  position:fixed;left:50%;bottom:28px;transform:translate(-50%,20px);z-index:300;
  background:var(--ink);color:#fff;padding:13px 22px;border-radius:999px;font-size:14.5px;font-weight:600;
  box-shadow:var(--shadow-lg);opacity:0;pointer-events:none;transition:opacity .25s,transform .25s var(--ease);
}
.toast.is-show{opacity:1;transform:translate(-50%,0)}

/* ---------- 22. Reveal on scroll ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- 23. Responsive ---------- */
@media (max-width:1080px){
  .grid--4{grid-template-columns:repeat(3,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .steps__item:nth-child(2)::after{display:none}
  .footer__grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px}
  .footer__col--brand{grid-column:1/-1}
}
@media (max-width:960px){
  .hero-swiper__nav{display:none}
  .hero-stats__note{margin-left:0;flex:1 1 100%;padding-top:14px;border-top:1px solid rgba(255,255,255,.08)}
  .hslide{min-height:520px}
  .hslide__inner{padding-block:78px 116px}
  .hslide__inner--cap{padding-block:0 116px}
  .why{grid-template-columns:1fr;gap:56px}
  .quote-sec__inner{grid-template-columns:1fr;gap:40px}
  .grid--3{grid-template-columns:repeat(2,1fr)}
  .section__head--row{flex-direction:column;align-items:flex-start}

  .nav{
    position:absolute;top:100%;left:0;right:0;z-index:-1;background:#fff;
    flex-direction:column;align-items:stretch;gap:0;
    padding:14px 20px 24px;border-bottom:1px solid var(--line);box-shadow:var(--shadow);
    opacity:0;visibility:hidden;transform:translateY(-10px);
    transition:opacity .25s var(--ease),transform .25s var(--ease),visibility .25s;
    max-height:calc(100vh - 76px);overflow-y:auto;
  }
  .nav.is-open{opacity:1;visibility:visible;transform:translateY(0)}
  .nav__list{flex-direction:column;align-items:stretch;gap:2px}
  .nav__link{padding:14px 10px;border-radius:10px;font-size:16px}
  .nav__link::after{display:none}
  .nav__link:hover,.nav__link.is-active{background:var(--brand-soft)}
  .nav__cta{margin-top:14px;justify-content:center}
  .burger{display:block}
}
@media (max-width:768px){
  .section{padding:66px 0}
  .topbar__item--hide-sm,.topbar__left{display:none}
  .topbar__inner{justify-content:center}
  .grid--4{grid-template-columns:repeat(2,1fr)}
  .hero-stats__inner{gap:14px 30px}
  .hero-stats b{font-size:25px}
  .cta__inner{flex-direction:column;align-items:flex-start}
}
@media (max-width:600px){
  .clients{padding:56px 0 60px}
  .clients .section__head{margin-bottom:26px}
  .logo-item{gap:10px;padding:10px 14px}
  .logo-item__mark{width:40px;height:40px;border-radius:11px;font-size:13px}
  .logo-item__name{font-size:14.5px}
  .brand__mark{width:40px;height:40px;font-size:16px}
  .brand__text strong{font-size:16px}
  .brand__text small{font-size:9.5px;letter-spacing:.1em}
  .hslide{min-height:460px}
  .hslide__inner{padding-block:56px 100px}
  .hslide__inner--cap{padding-block:0 100px}
  .hslide__title{font-size:clamp(27px,7.4vw,38px);margin:0 0 20px}
  .hslide__cap{font-size:20px}
  .hslide__tag{font-size:11px;padding:5px 12px;margin-bottom:10px}
  .hslide__actions{gap:10px}
  .hslide__actions .btn{flex:1 1 100%;padding:13px 18px}
  .hero-swiper__bar{bottom:24px}
  .hero-swiper__counter{display:none}
  .hero-stats b{font-size:23px}
  .grid--3,.steps{grid-template-columns:1fr}
  .grid--4{grid-template-columns:repeat(2,1fr);gap:14px}
  .product__body{padding:14px 13px 16px}
  .product__cat{font-size:11px}
  .product__name{font-size:14px}
  .product__price b{font-size:16px}
  .product__price del{display:block;margin:0}
  .product__meta{gap:5px;margin-bottom:10px}
  .product__meta .stars{font-size:12px}
  .product__meta small{font-size:11px;white-space:nowrap}
  .product .btn--sm{padding:9px 10px;font-size:12.5px}
  .steps__item::after{display:none}
  .field-row{grid-template-columns:1fr}
  .footer__grid{grid-template-columns:1fr 1fr}
  .quote-form{padding:26px 20px}
  .why__frame{grid-template-columns:1fr 1fr}
  .why__shot--a{min-height:220px}
  .why__shot--b{min-height:180px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}