/* ==========================================================================
   VietnamSKU — supplier landing page (sell.vietnamsku.com)
   Palette sampled from the approved PDF.
   ========================================================================== */

:root{
  --cream:#FFFBEB;
  --white:#fff;
  --ink:#2A2A2A;
  --ink-soft:#5A5A66;
  --purple:#4A288F;
  --purple-deep:#362187;
  --purple-foot:#38238C;
  --purple-light:#7C5BC7;
  --gold:#FEC22E;
  --yellow:#F4E644;
  --line:#EDE6D4;

  --wrap:1180px;
  --gutter:22px;
  --r-md:16px;
  --r-lg:28px;
  --shadow:0 10px 36px rgba(54,33,135,.10);
  --header-h:88px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:calc(var(--header-h) + 10px)}
body{
  margin:0;background:var(--cream);color:var(--ink-soft);
  font-family:"Be Vietnam Pro",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;
  font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--purple);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3{margin:0;color:var(--ink);line-height:1.15;letter-spacing:-.02em;font-weight:800}
p{margin:0}
:focus-visible{outline:3px solid var(--purple);outline-offset:3px;border-radius:6px}

.wrap{width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:var(--gutter)}
.skip{position:absolute;left:-9999px;z-index:200;background:var(--purple);color:#fff;padding:12px 18px}
.skip:focus{left:0;top:0}

.eyebrow{
  display:block;text-align:center;color:var(--purple-deep);
  font-size:12.5px;font-weight:800;letter-spacing:.16em;text-transform:uppercase;margin-bottom:12px;
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  font:inherit;font-weight:700;font-size:14.5px;color:#fff;
  padding:12px 24px;border:0;border-radius:999px;cursor:pointer;text-decoration:none;
  background:linear-gradient(95deg,var(--purple-deep) 0%,var(--purple) 50%,#6A3BB0 100%);
  box-shadow:0 6px 18px rgba(74,40,143,.28);
  transition:transform .16s ease, box-shadow .16s ease, opacity .16s ease;
}
.btn:hover{text-decoration:none;transform:translateY(-1px);box-shadow:0 10px 24px rgba(74,40,143,.34)}
.btn:active{transform:translateY(0)}
.btn--lg{padding:14px 28px;font-size:15.5px}
.btn--block{width:100%}
.btn--outline{
  background:#fff;color:var(--purple);border:1.6px solid var(--purple);box-shadow:none;
}
.btn--outline:hover{background:#F6F1FF}
.btn:disabled{opacity:.6;cursor:progress}

/* ---------- header ---------- */
.header{
  position:sticky;top:0;z-index:100;background:rgba(255,255,255,.95);
  backdrop-filter:saturate(180%) blur(10px);border-bottom:1px solid transparent;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.header.is-stuck{border-bottom-color:var(--line);box-shadow:0 4px 18px rgba(42,42,42,.06)}
.header__bar{min-height:var(--header-h);display:flex;align-items:center;gap:18px;padding-block:10px}
.brand{display:flex;flex-direction:column;gap:2px;line-height:1}
.brand img{width:120px}
.brand span{
  font-size:8.5px;font-weight:800;letter-spacing:.18em;text-transform:uppercase;
  color:var(--purple-deep);padding-left:2px;
}
.header__nav{display:none;gap:28px}
.header__nav a{color:var(--ink);font-weight:600;font-size:15px}
.header__nav a:hover{color:var(--purple);text-decoration:none}
.header__right{margin-left:auto;display:flex;align-items:center;gap:10px}
.header__cta{display:none}

.lang{position:relative}
.lang__btn{
  display:inline-flex;align-items:center;gap:7px;font:inherit;font-size:13.5px;font-weight:700;
  color:var(--ink);background:#fff;border:1.4px solid var(--line);border-radius:999px;
  padding:8px 13px;cursor:pointer;
}
.lang__btn:hover{border-color:var(--purple-light)}
.lang__btn .chev{transition:transform .18s ease}
.lang__btn[aria-expanded="true"] .chev{transform:rotate(180deg)}
.lang__menu{
  position:absolute;right:0;top:calc(100% + 8px);min-width:160px;background:#fff;
  border:1px solid var(--line);border-radius:var(--r-md);box-shadow:var(--shadow);
  padding:6px;margin:0;list-style:none;display:none;
}
.lang__menu[data-open="true"]{display:block}
.lang__menu a{display:block;padding:9px 12px;border-radius:9px;color:var(--ink);font-size:14px;font-weight:600}
.lang__menu a:hover{background:#F6F1FF;text-decoration:none}
.lang__menu a[aria-current="true"]{color:var(--purple)}

.burger{
  display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;
  border:1.4px solid var(--line);border-radius:12px;background:#fff;color:var(--ink);cursor:pointer;
}
.drawer{display:none;border-top:1px solid var(--line);background:#fff;padding:8px var(--gutter) 20px}
.drawer[data-open="true"]{display:block}
.drawer a{display:block;padding:13px 2px;color:var(--ink);font-weight:600;border-bottom:1px solid var(--line)}
.drawer .btn{margin-top:16px;width:100%}

@media (min-width:1000px){
  .header__nav{display:flex}
  .header__cta{display:inline-flex}
  .burger{display:none}
  .drawer{display:none !important}
}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;background:#243B2E}
.hero__bg{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:60% 40%;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg, rgba(20,38,28,.88) 0%, rgba(20,38,28,.62) 44%, rgba(20,38,28,.12) 72%);
}
.hero__inner{position:relative;z-index:2;display:grid;align-items:end;padding-top:40px}
.hero__text{padding-bottom:40px;max-width:600px}
.hero h1{
  color:#fff;font-size:clamp(30px,6.4vw,46px);line-height:1.14;letter-spacing:-.025em;
}
.hero h1 em{color:var(--gold);font-style:normal}
.hero__lead{margin-top:16px;color:rgba(255,255,255,.88);font-size:clamp(14.5px,2.2vw,16.5px);max-width:30em}
.hero__cta{margin-top:24px}
.hero__figure{display:none}
.hero__wave{position:relative;z-index:3;display:block;width:100%;margin-top:-1px}

@media (min-width:860px){
  .hero__inner{grid-template-columns:1.1fr .9fr;gap:20px;min-height:430px;padding-top:56px}
  .hero__text{padding-bottom:72px}
  .hero__figure{display:block;align-self:end;justify-self:center}
  .hero__figure img{max-height:460px;width:auto;filter:drop-shadow(0 18px 30px rgba(0,0,0,.28))}
}

/* ---------- section shell ---------- */
.section{padding:56px 0}
.section h2{font-size:clamp(24px,4.2vw,34px);text-align:center}

/* ---------- approach steps ---------- */
.steps{margin-top:44px;display:grid;gap:48px}
.step{display:grid;gap:22px;align-items:center;position:relative}
.step__body{text-align:center}
.step__num{
  width:52px;height:52px;border-radius:999px;background:var(--yellow);color:var(--ink);
  display:grid;place-items:center;font-weight:800;font-size:19px;margin:0 auto 14px;
  box-shadow:0 6px 16px rgba(244,230,68,.5);
}
.step h3{font-size:19px;text-transform:uppercase;letter-spacing:.01em;margin-bottom:10px}
.step p{font-size:15px;max-width:34em;margin-inline:auto}
.step__cta{margin-top:18px}
.step__art img{margin-inline:auto;border-radius:var(--r-md)}

@media (min-width:860px){
  .step{grid-template-columns:1fr 1fr;gap:44px}
  .step__body{text-align:left}
  .step__num{margin:0 0 16px}
  .step p{margin-inline:0}
  .step--flip .step__art{order:-1}
}

/* ---------- differentiator card ---------- */
.why{
  background:#fff;border-radius:var(--r-lg);padding:40px 26px;margin-top:8px;
  box-shadow:var(--shadow);
}
.why__grid{display:grid;gap:30px;margin-top:34px}
.why__item{text-align:center}
.why__icon{
  width:62px;height:62px;margin:0 auto 14px;display:grid;place-items:center;
  border-radius:18px;background:#F6F1FF;
}
.why__item h3{font-size:16.5px;margin-bottom:8px}
.why__item p{font-size:14px;line-height:1.55}
@media (min-width:760px){.why__grid{grid-template-columns:repeat(3,1fr);gap:34px}}
@media (min-width:860px){.why{padding:46px 44px}}

/* ---------- partners ---------- */
.partners{padding:46px 0 10px;text-align:center}
.partners__row{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:26px 44px;margin-top:22px;
}
.partners__row img{height:44px;width:auto}
.partners__spon{line-height:1.3}
.partners__spon span{
  display:block;font-size:11px;font-weight:800;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-soft);
}
.partners__spon strong{font-size:19px;color:var(--ink);letter-spacing:.01em}

/* ---------- contact ---------- */
.contact{position:relative;padding-bottom:0}
.contact__grid{display:grid;gap:30px;align-items:center}
.contact__photo{background:#fff;border-radius:var(--r-lg);padding:14px;box-shadow:var(--shadow)}
.contact h2{text-align:left;font-size:clamp(23px,3.6vw,30px)}
.contact__lead{margin-top:12px;font-size:15px;max-width:34em}
@media (min-width:860px){
  .contact__grid{grid-template-columns:.85fr 1.15fr;gap:48px}
}

/* ---------- form ---------- */
.form{display:grid;gap:14px 16px;margin-top:22px}
.form .field{margin:0;display:flex;flex-direction:column;gap:6px}
.field--full{grid-column:1 / -1}
.form label{font-size:13px;font-weight:700;color:var(--ink)}
.form label span{color:#C2452D}
.form input{
  font:inherit;font-size:15px;color:var(--ink);width:100%;padding:12px 14px;
  background:#fff;border:1.5px solid var(--line);border-radius:12px;
  transition:border-color .16s ease, box-shadow .16s ease;
}
.form input::placeholder{color:#AFAAA0}
.form input:hover{border-color:var(--purple-light)}
.form input:focus{outline:none;border-color:var(--purple);box-shadow:0 0 0 3px rgba(74,40,143,.14)}
.form input:user-invalid{border-color:#C2452D}
.form__hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden;margin:0}
.form__or{
  display:flex;align-items:center;gap:14px;color:var(--ink-soft);font-size:12px;
  font-weight:700;letter-spacing:.12em;text-transform:uppercase;
}
.form__or::before,.form__or::after{content:"";flex:1;height:1px;background:var(--line)}
.form__zalo img{width:20px;height:20px}
.form__status{font-size:14px;line-height:1.45;min-height:1.2em}
.form__status[data-kind="ok"]{color:#1D7A3D;font-weight:600}
.form__status[data-kind="error"]{color:#B03A24;font-weight:600}
.form__status[data-kind="busy"]{color:var(--ink-soft)}
.form__note{font-size:12.5px;color:var(--ink-soft);line-height:1.5}
@media (min-width:560px){.form{grid-template-columns:1fr 1fr}}

/* ---------- footer ---------- */
.footwave{display:block;width:100%;margin-bottom:-2px}
.footer{background:var(--purple-foot);color:rgba(255,255,255,.82);padding:34px 0 26px}
.footer a{color:#fff}
.footer__top{display:grid;gap:22px}
.footer__brand img{width:150px}
.footer__brand a,.footer__brand{display:block}
.footer__brand img{background:#fff;border-radius:999px;padding:10px 16px}
.footer__tag{margin-top:12px;font-size:14px;max-width:32em}
.footer__nav{display:flex;flex-wrap:wrap;gap:12px 26px;font-weight:600;font-size:15px}
.footer__social{display:flex;gap:10px}
.footer__social a{
  width:36px;height:36px;border-radius:10px;background:rgba(255,255,255,.14);
  display:grid;place-items:center;
}
.footer__social a:hover{background:rgba(255,255,255,.26)}
.footer__social img{width:20px;height:20px;border-radius:4px}
.footer__bottom{
  margin-top:26px;padding-top:18px;border-top:1px solid rgba(255,255,255,.18);
  display:grid;gap:12px;font-size:13px;
}
.footer__legal{display:flex;flex-wrap:wrap;gap:10px 22px}
@media (min-width:860px){
  .footer__top{grid-template-columns:1.4fr 1fr auto;align-items:start;gap:40px}
  .footer__nav{justify-content:flex-end}
  .footer__bottom{grid-template-columns:1fr auto;align-items:center}
}

/* ---------- cookie banner ---------- */
.cookies{
  position:fixed;left:0;right:0;bottom:0;z-index:150;background:#fff;
  border-top:1px solid var(--line);box-shadow:0 -10px 36px rgba(42,42,42,.14);
  padding:16px var(--gutter) calc(16px + env(safe-area-inset-bottom));
  transform:translateY(102%);transition:transform .32s ease;
}
.cookies[data-open="true"]{transform:translateY(0)}
.cookies__inner{max-width:var(--wrap);margin-inline:auto;display:grid;gap:12px}
.cookies h2{font-size:15.5px;margin-bottom:5px}
.cookies p{font-size:13.5px;line-height:1.5;max-width:64ch}
.cookies__actions{display:flex;gap:10px;flex-wrap:wrap}
.cookies .btn{padding:11px 22px;font-size:14px}
@media (min-width:860px){.cookies__inner{grid-template-columns:1fr auto;align-items:center;gap:36px}}

/* ---------- content pages ---------- */
.page{padding:46px 0 70px}
.page .wrap{max-width:740px}
.page h1{font-size:clamp(27px,5vw,38px)}
.page h2{font-size:20px;margin-top:34px;text-align:left}
.page p,.page li{margin-top:13px;font-size:16px;line-height:1.68}
.page ul{padding-left:22px}
.page .updated{margin-top:10px;font-size:13.5px;color:var(--ink-soft)}
.page .todo{background:#fff;border:1px dashed var(--purple-light);border-radius:var(--r-md);padding:15px 17px;margin-top:18px;font-size:14px}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms !important;transition-duration:.01ms !important}
}