/* ==========================================================================
   Datavina - data package landing page
   One theme (light) locked. One accent (#1F5FD6). One radius system:
   pill = interactive (buttons, chips), 20px = card shell, 12px = inner core
   and inputs, 32px = large panels. No em-dashes, no decorative dots.
   ========================================================================== */

/* --- tokens ------------------------------------------------------------- */
:root {
  --canvas: #f3f5f9;
  --canvas-2: #eceff6;
  --surface: #ffffff;
  --surface-2: #f7f9fc;
  --ink: #0b1220;
  --ink-2: #48536a;
  --ink-3: #5a6780;
  --line: rgba(11, 18, 32, 0.09);
  --line-2: rgba(11, 18, 32, 0.16);

  /* Vinaphone brand: cyan #00a1e4 and deep blue #0065b3, both taken from the
     official logo. Cyan is used for fills, tints and light; deep blue for
     anything that carries text or icons so contrast stays above WCAG AA. */
  --vina-cyan: #00a1e4;
  --vina-cyan-tint: #e5f6fe;
  --vina-cyan-tint-2: #c9ebfb;
  --vina-blue: #0065b3;
  --vina-blue-deep: #00508f;
  --vina-rgb: 0, 161, 228;
  --vina-blue-rgb: 0, 101, 179;

  --accent: var(--vina-blue);
  --accent-ink: var(--vina-blue-deep);
  --accent-tint: var(--vina-cyan-tint);
  --accent-tint-2: var(--vina-cyan-tint-2);
  --focus: var(--vina-blue);

  --r-card: 20px;
  --r-inner: 12px;
  --r-panel: 32px;
  --r-pill: 999px;

  --sh-1: 0 1px 2px rgba(11, 18, 32, 0.05);
  --sh-2: 0 18px 40px -26px rgba(11, 18, 32, 0.24);
  --sh-3: 0 42px 90px -50px rgba(11, 18, 32, 0.38);
  --sh-inset: inset 0 1px 0 rgba(255, 255, 255, 0.72);

  --shell: min(1240px, 100% - clamp(2.25rem, 6vw, 5rem));
  --sec: clamp(4.5rem, 8.5vw, 8.5rem);
  --nav-h: 60px;

  --f-display: "Geist", "Segoe UI", system-ui, -apple-system, sans-serif;
  --f-body: "Be Vietnam Pro", "Segoe UI", system-ui, -apple-system, sans-serif;
  --f-mono: "Geist Mono", "Cascadia Mono", Consolas, monospace;

  --fs-h1: clamp(2.1rem, 1.15rem + 3.9vw, 4rem);
  --fs-h2: clamp(1.75rem, 1.13rem + 2.35vw, 3rem);
  --fs-h3: clamp(1.12rem, 1rem + 0.38vw, 1.4rem);
  --fs-lead: clamp(1rem, 0.95rem + 0.28vw, 1.16rem);
  --fs-body: 1rem;
  --fs-sm: 0.9rem;
  --fs-xs: 0.8rem;

  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-soft: cubic-bezier(0.32, 0.72, 0, 1);
}

/* --- reset -------------------------------------------------------------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 110px;
  overflow-x: clip;
}

html.is-locked { overflow: hidden; }

body {
  margin: 0;
  background: var(--canvas);
  color: var(--ink);
  font-family: var(--f-body);
  font-size: var(--fs-body);
  line-height: 1.6;
  font-weight: 400;
  letter-spacing: -0.003em;
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}

h1, h2, h3, h4 {
  margin: 0;
  font-family: var(--f-display);
  font-weight: 600;
  letter-spacing: -0.028em;
  line-height: 1.14;
  text-wrap: balance;
}

p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
img { display: block; max-width: 100%; height: auto; }
button, input, select { font: inherit; color: inherit; }
button { background: none; border: 0; cursor: pointer; }
a { color: inherit; text-decoration: none; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 6px;
}

::selection { background: var(--accent-tint-2); color: var(--ink); }

.icon {
  width: 1.15em;
  height: 1.15em;
  flex: none;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.sprite { position: absolute; width: 0; height: 0; overflow: hidden; }

.shell { width: var(--shell); margin-inline: auto; }

.skip {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 90;
  transform: translateY(-160%);
  background: var(--ink);
  color: #fff;
  padding: 0.7rem 1.1rem;
  border-radius: var(--r-pill);
  font-size: var(--fs-sm);
  transition: transform 0.4s var(--ease);
}
.skip:focus-visible { transform: none; }

/* --- ambient layers ----------------------------------------------------- */
.glow {
  position: fixed;
  inset: 0;
  height: 92vh;
  z-index: 0;
  pointer-events: none;
  overflow: clip;
}
.glow::before {
  content: "";
  position: absolute;
  inset: -18vh -8vw;
  background:
    radial-gradient(46% 54% at 18% 26%, rgba(0, 161, 228, 0.16), transparent 68%),
    radial-gradient(38% 46% at 82% 12%, rgba(0, 161, 228, 0.10), transparent 70%);
  animation: drift 34s ease-in-out infinite alternate;
}
@keyframes drift {
  from { transform: translate3d(-2%, -1%, 0) scale(1); }
  to { transform: translate3d(3%, 2%, 0) scale(1.12); }
}

.grain {
  position: fixed;
  inset: 0;
  z-index: 40;
  pointer-events: none;
  opacity: 0.032;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)'/%3E%3C/svg%3E");
}

main { position: relative; z-index: 1; }

/* --- typography helpers ------------------------------------------------- */
.sec { padding-block: var(--sec); }

.h2 { font-size: var(--fs-h2); max-width: 22ch; }
.lead {
  font-size: var(--fs-lead);
  color: var(--ink-2);
  max-width: 58ch;
  line-height: 1.62;
}
.mono {
  font-family: var(--f-mono);
  font-size: 0.86em;
  letter-spacing: -0.02em;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-family: var(--f-mono);
  font-size: 0.72rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--accent-ink);
  background: var(--accent-tint);
  border-radius: var(--r-pill);
  padding: 0.42rem 0.85rem;
}

.sec-head { display: grid; gap: 1.1rem; margin-bottom: clamp(2.5rem, 4vw, 4rem); }

/* --- buttons ------------------------------------------------------------ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.62rem 0.62rem 0.62rem 1.3rem;
  border-radius: var(--r-pill);
  font-family: var(--f-body);
  font-size: 0.94rem;
  font-weight: 600;
  letter-spacing: -0.012em;
  white-space: nowrap;
  border: 1px solid transparent;
  transition: background-color 0.35s var(--ease), color 0.35s var(--ease),
    border-color 0.35s var(--ease), box-shadow 0.45s var(--ease),
    transform 0.5s var(--ease-soft);
}
.btn__ic {
  display: grid;
  place-items: center;
  width: 1.85rem;
  height: 1.85rem;
  border-radius: var(--r-pill);
  transition: transform 0.55s var(--ease-soft), background-color 0.35s var(--ease);
}
.btn__ic .icon { width: 0.95rem; height: 0.95rem; stroke-width: 2; }
.btn:hover .btn__ic { transform: translate(2px, -2px) scale(1.05); }
.btn:active { transform: scale(0.982); }

.btn--primary {
  background: var(--vina-blue);
  color: #fff;
  box-shadow: 0 20px 44px -26px rgba(0, 101, 179, 0.6);
}
.btn--primary .btn__ic { background: rgba(255, 255, 255, 0.2); }
.btn--primary:hover { background: var(--vina-blue-deep); }

.btn--light { background: var(--vina-cyan); color: var(--ink); }
.btn--light .btn__ic { background: rgba(11, 18, 32, 0.16); }

.btn--ghost { border-color: var(--line-2); color: var(--ink); }
.btn--ghost .btn__ic { background: rgba(11, 18, 32, 0.05); }
.btn--ghost:hover { border-color: var(--ink); }

.btn--sm { padding: 0.42rem 0.42rem 0.42rem 0.95rem; font-size: 0.86rem; }
.btn--sm .btn__ic { width: 1.55rem; height: 1.55rem; }

/* --- nav ---------------------------------------------------------------- */
.nav {
  position: fixed;
  top: clamp(0.7rem, 1.6vw, 1.35rem);
  left: 50%;
  transform: translateX(-50%);
  z-index: 60;
  width: var(--shell);
  display: flex;
  align-items: center;
  gap: 1rem;
  justify-content: space-between;
  height: var(--nav-h);
  padding: 0 0.5rem 0 0.85rem;
  border-radius: var(--r-pill);
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(11, 18, 32, 0.07);
  box-shadow: 0 20px 46px -30px rgba(11, 18, 32, 0.3);
  backdrop-filter: blur(18px) saturate(160%);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  transition: background-color 0.5s var(--ease), box-shadow 0.5s var(--ease);
}
.nav.is-stuck {
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 24px 52px -28px rgba(11, 18, 32, 0.36);
}

.brand { display: inline-flex; align-items: center; gap: 0.6rem; }
.brand__logo {
  height: 32px;
  width: auto;
  max-width: 170px;
  display: block;
  object-fit: contain;
}
.brand--footer .brand__logo {
  height: 30px;
}

.nav__links { display: flex; align-items: center; gap: 0.35rem; }
.nav__link {
  padding: 0.5rem 0.8rem;
  border-radius: var(--r-pill);
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--ink-2);
  transition: color 0.3s var(--ease), background-color 0.3s var(--ease);
}
.nav__link:hover { color: var(--ink); background: rgba(11, 18, 32, 0.045); }

.nav__end { display: flex; align-items: center; gap: 0.5rem; }

.burger {
  display: none;
  position: relative;
  width: 2.6rem;
  height: 2.6rem;
  border-radius: var(--r-pill);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.6);
}
.burger span {
  position: absolute;
  left: 50%;
  width: 1.05rem;
  height: 1.5px;
  background: var(--ink);
  border-radius: 2px;
  transition: transform 0.55s var(--ease-soft), opacity 0.3s var(--ease);
}
.burger span:nth-child(1) { transform: translate(-50%, -4px); }
.burger span:nth-child(2) { transform: translate(-50%, 4px); }
.nav.is-open .burger span:nth-child(1) { transform: translate(-50%, 0) rotate(45deg); }
.nav.is-open .burger span:nth-child(2) { transform: translate(-50%, 0) rotate(-45deg); }

.overlay {
  position: fixed;
  inset: 0;
  z-index: 55;
  display: grid;
  align-content: center;
  padding: 5.5rem 1.75rem 2.5rem;
  background: rgba(244, 246, 251, 0.94);
  backdrop-filter: blur(26px);
  -webkit-backdrop-filter: blur(26px);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.5s var(--ease), visibility 0.5s var(--ease);
}
.nav.is-open ~ .overlay { opacity: 1; visibility: visible; }
.overlay__list { display: grid; gap: 0.15rem; }
.overlay__link {
  font-family: var(--f-display);
  font-size: clamp(1.6rem, 8vw, 2.4rem);
  font-weight: 500;
  letter-spacing: -0.03em;
  padding: 0.35rem 0;
  border-bottom: 1px solid var(--line);
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.5s var(--ease), transform 0.6s var(--ease-soft);
}
.nav.is-open ~ .overlay .overlay__link { opacity: 1; transform: none; }
.nav.is-open ~ .overlay .overlay__link:nth-child(1) { transition-delay: 0.08s; }
.nav.is-open ~ .overlay .overlay__link:nth-child(2) { transition-delay: 0.14s; }
.nav.is-open ~ .overlay .overlay__link:nth-child(3) { transition-delay: 0.2s; }
.nav.is-open ~ .overlay .overlay__link:nth-child(4) { transition-delay: 0.26s; }
.nav.is-open ~ .overlay .overlay__foot { transition-delay: 0.32s; }
.overlay__foot {
  margin-top: 2rem;
  display: grid;
  gap: 1rem;
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.5s var(--ease), transform 0.6s var(--ease-soft);
}
.nav.is-open ~ .overlay .overlay__foot { opacity: 1; transform: none; }

/* --- hero --------------------------------------------------------------- */
.hero { padding-top: clamp(6rem, 8vw, 7.5rem); padding-bottom: clamp(3rem, 5vw, 5rem); }
.hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: center;
}
.hero__copy { display: grid; gap: 1.5rem; justify-items: start; }
.hero h1 {
  font-size: var(--fs-h1);
  font-weight: 600;
  max-width: 24ch;
}
.hero__lead { max-width: 44ch; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 0.7rem; margin-top: 0.4rem; }

/* frameless hero media: no border, no radius, no shadow, edge feathered */
.hero__media {
  position: relative;
  aspect-ratio: 5 / 4;
  isolation: isolate;
}
.hero__blend {
  position: absolute;
  inset: 0;
  overflow: hidden;
  -webkit-mask-image: linear-gradient(118deg, transparent 0%, rgba(0, 0, 0, 0.45) 13%, #000 40%),
    linear-gradient(0deg, transparent 0%, rgba(0, 0, 0, 0.6) 16%, #000 40%),
    linear-gradient(180deg, transparent 0%, rgba(0, 0, 0, 0.5) 10%, #000 26%);
  mask-image: linear-gradient(118deg, transparent 0%, rgba(0, 0, 0, 0.45) 13%, #000 40%),
    linear-gradient(0deg, transparent 0%, rgba(0, 0, 0, 0.6) 16%, #000 40%),
    linear-gradient(180deg, transparent 0%, rgba(0, 0, 0, 0.5) 10%, #000 26%);
  -webkit-mask-composite: source-in;
  mask-composite: intersect;
}
.hero__blend img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(0.82) contrast(1.08) brightness(0.92);
}
.hero__blend::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(160deg, rgba(0, 161, 228, 0.40), rgba(11, 18, 32, 0.72));
  mix-blend-mode: color;
}
.hero__blend::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(200deg, rgba(11, 18, 32, 0) 42%, rgba(11, 18, 32, 0.5) 100%);
}

.spot {
  position: absolute;
  left: -0.5rem;
  bottom: 1.5rem;
  z-index: 3;
  width: min(19rem, 78%);
  background: rgba(255, 255, 255, 0.62);
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: var(--r-card);
  padding: 6px;
  box-shadow: var(--sh-3);
  backdrop-filter: blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
}
.spot__core {
  background: rgba(255, 255, 255, 0.88);
  border-radius: calc(var(--r-card) - 6px);
  padding: 1.15rem 1.25rem 1.25rem;
  box-shadow: var(--sh-inset);
}
.spot__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  font-size: var(--fs-xs);
  color: var(--ink-3);
}
.spot__top > span:first-child {
  font-family: var(--f-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--vina-blue);
}
.spot__badge {
  font-family: var(--f-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent-ink);
  background: var(--accent-tint);
  border-radius: var(--r-pill);
  padding: 0.22rem 0.6rem;
}
.spot__name {
  font-family: var(--f-display);
  font-size: 1.55rem;
  font-weight: 600;
  letter-spacing: -0.03em;
  margin-top: 0.55rem;
}
.spot__price {
  font-family: var(--f-display);
  font-size: 1.85rem;
  font-weight: 600;
  letter-spacing: -0.03em;
  margin-top: 0.15rem;
}
.spot__price em { font-style: normal; font-size: 0.62em; color: var(--ink-3); font-weight: 500; }
.spot__note { font-size: var(--fs-sm); color: var(--ink-2); margin-top: 0.5rem; }

/* --- credibility strip -------------------------------------------------- */
.strip { padding-block: clamp(1.8rem, 3vw, 2.6rem); }
.strip__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.25rem 2.5rem;
  padding: 1.35rem clamp(1.25rem, 3vw, 2rem);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-card);
  box-shadow: var(--sh-1);
}
.carriers { display: flex; align-items: center; gap: 1.5rem; }
.carrier { display: inline-flex; align-items: center; gap: 0.65rem; }
.carrier__mark {
  display: grid;
  place-items: center;
  width: 2.15rem;
  height: 2.15rem;
  border-radius: 10px;
  background: var(--surface-2);
  border: 1px solid var(--line);
  font-family: var(--f-display);
  font-weight: 600;
  font-size: 0.82rem;
  letter-spacing: -0.02em;
  color: var(--ink-2);
}
.carrier__mark--vina {
  background: var(--vina-blue);
  border-color: var(--vina-blue);
  color: #fff;
}
.carrier__name {
  font-family: var(--f-display);
  font-weight: 600;
  font-size: 0.98rem;
  letter-spacing: -0.02em;
}
.strip__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 2rem;
  margin-left: auto;
  font-size: var(--fs-sm);
  color: var(--ink-2);
}
.strip__fact { display: inline-flex; align-items: center; gap: 0.5rem; }
.strip__fact .icon { width: 1.05rem; height: 1.05rem; color: var(--accent); }

/* --- catalog ------------------------------------------------------------ */
.tools {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 20rem);
  gap: 1rem;
  align-items: end;
  padding: clamp(1.1rem, 2vw, 1.5rem);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-card);
  box-shadow: var(--sh-1);
  margin-bottom: 1.5rem;
}
.filters { display: flex; flex-wrap: wrap; gap: 0.45rem; }
.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.95rem;
  border-radius: var(--r-pill);
  border: 1px solid var(--line-2);
  background: transparent;
  font-size: 0.89rem;
  font-weight: 500;
  color: var(--ink-2);
  transition: background-color 0.3s var(--ease), color 0.3s var(--ease),
    border-color 0.3s var(--ease), transform 0.4s var(--ease-soft);
}
.chip b {
  font-family: var(--f-mono);
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--ink-3);
}
.chip:hover { border-color: var(--ink); color: var(--ink); }
.chip:active { transform: scale(0.97); }
.chip[aria-pressed="true"] {
  background: var(--ink);
  border-color: var(--ink);
  color: #fff;
}
.chip[aria-pressed="true"] b { color: rgba(255, 255, 255, 0.62); }

.field { display: grid; gap: 0.45rem; }
.field label {
  font-size: var(--fs-xs);
  font-weight: 600;
  color: var(--ink-2);
  letter-spacing: 0.01em;
}
.field__box {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0 0.9rem;
  height: 2.9rem;
  background: var(--surface-2);
  border: 1px solid var(--line-2);
  border-radius: var(--r-inner);
  transition: border-color 0.3s var(--ease), background-color 0.3s var(--ease);
}
.field__box:focus-within { border-color: var(--accent); background: #fff; }
.field__box .icon { width: 1.05rem; height: 1.05rem; color: var(--ink-3); }
.field input {
  flex: 1;
  min-width: 0;
  border: 0;
  background: none;
  outline: none;
  font-size: 0.95rem;
}
.field input::placeholder { color: var(--ink-3); }
.field__hint { font-size: var(--fs-xs); color: var(--ink-3); }

.catalog__meta {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.4rem;
  font-size: var(--fs-sm);
  color: var(--ink-3);
}
.catalog__meta strong { color: var(--ink); font-weight: 600; }

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  grid-auto-flow: dense;
  gap: 1rem;
}

.pkg {
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-card);
  padding: clamp(1.15rem, 2vw, 1.5rem);
  box-shadow: var(--sh-1);
  transition: transform 0.55s var(--ease-soft), box-shadow 0.55s var(--ease),
    border-color 0.4s var(--ease);
}
.pkg:hover {
  transform: translateY(-3px);
  box-shadow: var(--sh-2);
  border-color: rgba(11, 18, 32, 0.14);
}
.pkg.is-target {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-tint), var(--sh-2);
}
.pkg[hidden] { display: none; }

.pkg__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  min-height: 1.6rem;
}
.pkg__carrier {
  font-family: var(--f-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--vina-blue);
}
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--accent-ink);
  background: var(--accent-tint);
  border-radius: var(--r-pill);
  padding: 0.24rem 0.6rem;
  white-space: nowrap;
}
.badge .icon { width: 0.85rem; height: 0.85rem; }
.badge--muted { color: var(--ink-2); background: var(--surface-2); }

.pkg__name {
  font-family: var(--f-display);
  font-size: 1.42rem;
  font-weight: 600;
  letter-spacing: -0.03em;
  margin-top: 0.9rem;
}
.pkg__price {
  display: flex;
  align-items: baseline;
  gap: 0.4rem;
  margin-top: 0.35rem;
}
.pkg__num {
  font-family: var(--f-display);
  font-size: 1.9rem;
  font-weight: 600;
  letter-spacing: -0.035em;
  font-variant-numeric: tabular-nums;
}
.pkg__per { font-size: var(--fs-sm); color: var(--ink-3); }

.pkg__list {
  display: grid;
  gap: 0.5rem;
  margin: 1.15rem 0;
  padding-top: 1.15rem;
  border-top: 1px solid var(--line);
  font-size: var(--fs-sm);
  color: var(--ink-2);
  line-height: 1.5;
}
.pkg__list li { display: grid; grid-template-columns: 1.05rem minmax(0, 1fr); gap: 0.55rem; }
.pkg__list .icon { width: 0.95rem; height: 0.95rem; margin-top: 0.28rem; color: var(--accent); }
.pkg__list b { color: var(--ink); font-weight: 600; }

.pkg__figure {
  display: grid;
  gap: 0.1rem;
  margin-top: 1.15rem;
  padding: 0.85rem 1.05rem;
  background: var(--accent-tint);
  border-radius: var(--r-inner);
}
.pkg__figure b {
  font-family: var(--f-display);
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: -0.03em;
  color: var(--accent-ink);
}
.pkg__figure span { font-size: var(--fs-xs); color: var(--accent-ink); }

.pkg__foot { margin-top: auto; display: grid; gap: 0.6rem; }
.syntax {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0.4rem 0.4rem 0.85rem;
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: var(--r-inner);
  transition: background-color 0.3s var(--ease), border-color 0.3s var(--ease);
}
.syntax code {
  flex: 1;
  min-width: 0;
  font-family: var(--f-mono);
  font-size: 0.84rem;
  letter-spacing: -0.02em;
  color: var(--ink);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.syntax__copy {
  display: grid;
  place-items: center;
  width: 1.85rem;
  height: 1.85rem;
  border-radius: 9px;
  color: var(--ink-2);
  background: rgba(11, 18, 32, 0.05);
  transition: background-color 0.3s var(--ease), color 0.3s var(--ease),
    transform 0.4s var(--ease-soft);
}
.syntax__copy:hover { background: var(--accent-tint); color: var(--accent-ink); }
.syntax__copy:active { transform: scale(0.94); }
.syntax__copy .icon { width: 1rem; height: 1rem; }
.syntax__copy .icon-ok { display: none; }
.syntax.is-copied { background: var(--accent-tint); border-color: var(--accent-tint-2); }
.syntax.is-copied .icon-copy { display: none; }
.syntax.is-copied .icon-ok { display: block; }
.syntax.is-copied .syntax__copy { background: #fff; color: var(--accent-ink); }

.pkg__cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  height: 2.7rem;
  border-radius: 12px;
  background: #FFD350;
  color: #10233f;
  font-size: 0.94rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  box-shadow: 0 4px 14px rgba(255, 211, 80, 0.35);
  border: 1px solid rgba(0, 0, 0, 0.05);
  transition: background-color 0.25s var(--ease), transform 0.3s var(--ease-soft), box-shadow 0.25s var(--ease);
}
.pkg__cta:hover {
  background: #f5c432;
  color: #0b182d;
  box-shadow: 0 6px 18px rgba(255, 211, 80, 0.45);
}
.pkg__cta:active { transform: scale(0.985); }
.cta__ic {
  display: grid;
  place-items: center;
  width: 1.55rem;
  height: 1.55rem;
  border-radius: var(--r-pill);
  background: rgba(16, 35, 63, 0.12);
  transition: transform 0.4s var(--ease-soft);
}
.cta__ic .icon { width: 0.9rem; height: 0.9rem; stroke-width: 2.4; stroke: #10233f; }
.pkg__cta:hover .cta__ic { transform: translate(2px, -2px) scale(1.05); }

.pkg--soft {
  background: linear-gradient(180deg, #ffffff 0%, #f1f5fb 100%);
  border-color: rgba(0, 161, 228, 0.24);
}

.pkg--featured {
  grid-column: span 2;
  background: var(--surface);
  border-color: rgba(0, 161, 228, 0.45);
  box-shadow: var(--sh-2);
}
.pkg--featured .pkg__name { font-size: 1.72rem; }
.pkg--featured .pkg__num { font-size: 2.5rem; }
.pkg--featured .pkg__inner {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  gap: 1.5rem 2.5rem;
  align-items: start;
  align-content: space-between;
}
.pkg--featured .pkg__list {
  margin-top: 0;
  padding-top: 0;
  border-top: 0;
  border-left: 1px solid var(--line);
  padding-left: 2rem;
  align-content: start;
}
.pkg--featured .pkg__foot { grid-column: 1 / -1; }

.empty[hidden] { display: none; }

.empty {
  grid-column: 1 / -1;
  display: grid;
  justify-items: center;
  gap: 0.6rem;
  text-align: center;
  padding: clamp(2.5rem, 6vw, 4.5rem) 1.5rem;
  background: var(--surface);
  border: 1px dashed var(--line-2);
  border-radius: var(--r-card);
}
.empty h3 { font-size: 1.15rem; }
.empty p { color: var(--ink-2); font-size: var(--fs-sm); max-width: 42ch; }

.foot-note {
  margin-top: 1.5rem;
  font-size: var(--fs-xs);
  color: var(--ink-3);
  max-width: 72ch;
}

/* --- steps rail --------------------------------------------------------- */
.steps__grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}
.steps__media {
  position: relative;
  aspect-ratio: 4 / 3;
}
.steps__blend {
  position: absolute;
  inset: 0;
  overflow: hidden;
  -webkit-mask-image: linear-gradient(78deg, #000 42%, transparent 97%),
    linear-gradient(180deg, transparent 0%, rgba(0, 0, 0, 0.55) 12%, #000 34%);
  mask-image: linear-gradient(78deg, #000 42%, transparent 97%),
    linear-gradient(180deg, transparent 0%, rgba(0, 0, 0, 0.55) 12%, #000 34%);
  -webkit-mask-composite: source-in;
  mask-composite: intersect;
}
.steps__blend img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(0.55) contrast(1.05);
}
.steps__blend::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(150deg, rgba(0, 101, 179, 0.42), rgba(11, 18, 32, 0.6));
  mix-blend-mode: color;
}
.steps__tag {
  position: absolute;
  right: 0.5rem;
  bottom: 0.5rem;
  z-index: 2;
  display: grid;
  gap: 0.15rem;
  padding: 0.85rem 1.1rem;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: var(--r-inner);
  box-shadow: var(--sh-2);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}
.steps__tag span { font-size: var(--fs-xs); color: var(--ink-3); }
.steps__tag code { font-family: var(--f-mono); font-size: 0.95rem; color: var(--ink); }

.rail {
  display: flex;
  gap: 0.85rem;
  margin-top: 2.25rem;
  padding-bottom: 0.75rem;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}
.rail::-webkit-scrollbar { display: none; }
.step {
  flex: 0 0 clamp(15rem, 60%, 18rem);
  scroll-snap-align: start;
  display: grid;
  align-content: start;
  gap: 0.65rem;
  padding: 1.35rem 1.35rem 1.5rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-card);
  box-shadow: var(--sh-1);
}
.step__top { display: flex; align-items: center; gap: 0.6rem; }
.step__num {
  font-family: var(--f-mono);
  font-size: 0.72rem;
  color: var(--accent-ink);
  background: var(--accent-tint);
  padding: 0.15rem 0.45rem;
  border-radius: 6px;
}
.step__verb { font-family: var(--f-display); font-weight: 600; font-size: 1.06rem; letter-spacing: -0.02em; }
.step p { font-size: var(--fs-sm); color: var(--ink-2); }
.step code {
  font-family: var(--f-mono);
  font-size: 0.83rem;
  color: var(--ink);
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0.35rem 0.6rem;
  justify-self: start;
}

/* --- needs tabs --------------------------------------------------------- */
.tabs { display: grid; gap: 1.5rem; }
.tablist {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  padding: 0.4rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  box-shadow: var(--sh-1);
  justify-self: start;
  max-width: 100%;
}
.tab {
  padding: 0.55rem 1.05rem;
  border-radius: var(--r-pill);
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--ink-2);
  transition: background-color 0.35s var(--ease), color 0.35s var(--ease);
}
.tab:hover { color: var(--ink); background: rgba(11, 18, 32, 0.045); }
.tab[aria-selected="true"] { background: var(--ink); color: #fff; }

.panel[hidden] { display: none; }
.panel__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(1.5rem, 4vw, 3.5rem);
  padding: clamp(1.5rem, 3vw, 2.5rem);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-panel);
  box-shadow: var(--sh-1);
}
.panel__ask {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: var(--fs-sm);
  color: var(--ink-3);
}
.panel__ask .icon { width: 1rem; height: 1rem; color: var(--accent); }
.panel h3 { font-size: clamp(1.3rem, 2vw, 1.75rem); margin-top: 0.7rem; }
.panel__pick {
  display: grid;
  gap: 0.75rem;
  align-content: start;
  padding-top: 0.5rem;
}
.panel__pkg {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem 1.1rem;
  background: var(--accent-tint);
  border-radius: var(--r-inner);
}
.panel__pkg span { font-family: var(--f-display); font-weight: 600; font-size: 1.08rem; letter-spacing: -0.02em; }
.panel__pkg em { font-style: normal; font-family: var(--f-display); font-weight: 600; font-size: 1.2rem; }
.reasons { display: grid; gap: 0.55rem; font-size: var(--fs-sm); color: var(--ink-2); }
.reasons li { display: grid; grid-template-columns: 1.05rem minmax(0, 1fr); gap: 0.55rem; }
.reasons .icon { width: 0.95rem; height: 0.95rem; margin-top: 0.28rem; color: var(--accent); }
.panel__cta { justify-self: start; margin-top: 0.35rem; }

/* --- unlimited section -------------------------------------------------- */
.sec--unlimited {
  background: var(--canvas-2);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding-top: clamp(3.5rem, 6vw, 6rem);
  padding-bottom: clamp(3.5rem, 6vw, 6rem);
}

.unl-banner {
  width: 100%;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 16px 40px rgba(16, 35, 63, 0.14);
  margin-bottom: 2.25rem;
  line-height: 0;
  border: 1px solid rgba(0, 101, 179, 0.18);
  background: #00122e;
}

.unl-banner img {
  width: 100%;
  height: auto;
  display: block;
  aspect-ratio: 1916 / 821;
  object-fit: cover;
  transition: transform 0.6s var(--ease);
}

.unl-banner:hover img {
  transform: scale(1.015);
}

.unl-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.5rem;
}

.unl-card {
  background: var(--surface);
  border: 1px solid rgba(0, 101, 179, 0.16);
  border-radius: 18px;
  padding: clamp(1.35rem, 2.2vw, 1.75rem);
  display: flex;
  flex-direction: column;
  box-shadow: 0 10px 30px -10px rgba(16, 35, 63, 0.08), 0 2px 6px rgba(16, 35, 63, 0.04);
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease), border-color 0.3s var(--ease);
}

.unl-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 20px 44px -18px rgba(0, 101, 179, 0.28);
  border-color: rgba(0, 101, 179, 0.35);
}

.unl-card--popular {
  border-color: rgba(124, 58, 237, 0.35);
  background: linear-gradient(180deg, #ffffff 0%, #faf6ff 100%);
  box-shadow: 0 14px 36px -12px rgba(124, 58, 237, 0.22);
}

.unl-card__header {
  margin-bottom: 0.25rem;
}

.unl-card__name {
  font-family: var(--f-display);
  font-size: 1.95rem;
  font-weight: 800;
  color: var(--vina-blue-deep);
  letter-spacing: -0.03em;
  margin: 0;
}

.unl-card__sub {
  font-size: 0.92rem;
  color: var(--ink-2);
  font-weight: 500;
  margin-top: 0.25rem;
}

.unl-card__price {
  display: flex;
  align-items: baseline;
  gap: 0.35rem;
  margin: 0.85rem 0 1rem;
  padding-bottom: 0.85rem;
  border-bottom: 1px solid var(--line);
}

.unl-card__num {
  font-family: var(--f-display);
  font-size: 2.1rem;
  font-weight: 800;
  color: var(--ink);
  letter-spacing: -0.03em;
}

.unl-card__per {
  font-size: 0.9rem;
  color: var(--ink-3);
}

.unl-card__list {
  display: grid;
  gap: 0.65rem;
  font-size: 0.88rem;
  color: var(--ink-2);
  line-height: 1.52;
  margin-bottom: 1.5rem;
}

.unl-card__list li {
  display: grid;
  grid-template-columns: 1.1rem minmax(0, 1fr);
  gap: 0.5rem;
}

.unl-card__list .icon {
  width: 0.95rem;
  height: 0.95rem;
  color: var(--vina-blue);
  margin-top: 0.22rem;
}

.unl-card__foot {
  margin-top: auto;
  display: grid;
  gap: 0.65rem;
}

@media (max-width: 1080px) {
  .unl-grid {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* --- faq ---------------------------------------------------------------- */
.faq { display: grid; gap: 0; max-width: 62rem; }
.acc { border-bottom: 1px solid var(--line); }
.acc__btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 1.35rem 0;
  text-align: left;
  font-family: var(--f-display);
  font-size: clamp(1rem, 1.35vw, 1.16rem);
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--ink);
  transition: color 0.3s var(--ease);
}
.acc__btn:hover { color: var(--accent-ink); }
.acc__sign {
  position: relative;
  flex: none;
  width: 1.6rem;
  height: 1.6rem;
  border-radius: var(--r-pill);
  border: 1px solid var(--line-2);
  transition: background-color 0.35s var(--ease), border-color 0.35s var(--ease);
}
.acc__sign::before,
.acc__sign::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0.62rem;
  height: 1.5px;
  background: currentColor;
  transform: translate(-50%, -50%);
  transition: transform 0.45s var(--ease-soft), opacity 0.3s var(--ease);
}
.acc__sign::after { transform: translate(-50%, -50%) rotate(90deg); }
.acc__btn[aria-expanded="true"] .acc__sign { background: var(--ink); border-color: var(--ink); color: #fff; }
.acc__btn[aria-expanded="true"] .acc__sign::after { transform: translate(-50%, -50%) rotate(0deg); opacity: 0; }
.acc__wrap {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.5s var(--ease-soft);
}
.acc.is-open .acc__wrap { grid-template-rows: 1fr; }
.acc__inner { overflow: hidden; }
.acc__inner p {
  padding: 0 4.5rem 1.4rem 0;
  font-size: var(--fs-sm);
  color: var(--ink-2);
  max-width: 62ch;
}
.acc__inner a { color: var(--accent-ink); text-decoration: underline; text-underline-offset: 2px; }

/* --- closing + footer --------------------------------------------------- */
.close { padding-block: var(--sec) 0; }
.close__panel {
  position: relative;
  overflow: hidden;
  border-radius: var(--r-panel);
  background: var(--ink);
  color: #fff;
  padding: clamp(2.5rem, 6vw, 5rem) clamp(1.5rem, 5vw, 4.5rem);
  box-shadow: var(--sh-3);
}
.close__media {
  position: absolute;
  inset: 0;
  opacity: 0.3;
  -webkit-mask-image: linear-gradient(255deg, #000 0%, transparent 62%);
  mask-image: linear-gradient(255deg, #000 0%, transparent 62%);
}
.close__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(1) contrast(1.1);
}
.close__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(200deg, rgba(0, 161, 228, 0.55), rgba(11, 18, 32, 0.9));
  mix-blend-mode: multiply;
}
.close__body { position: relative; display: grid; gap: 1.4rem; max-width: 40rem; }
.close__body h2 { font-size: var(--fs-h2); color: #fff; }
.close__body p { color: rgba(255, 255, 255, 0.72); font-size: var(--fs-lead); max-width: 46ch; }
.close__actions { display: flex; flex-wrap: wrap; gap: 0.7rem; margin-top: 0.3rem; }
.close__facts {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem 3rem;
  margin-top: clamp(2rem, 5vw, 3.5rem);
  padding-top: clamp(1.5rem, 3vw, 2.25rem);
  border-top: 1px solid rgba(255, 255, 255, 0.14);
}
.close__fact { display: grid; gap: 0.2rem; }
.close__fact b { font-family: var(--f-display); font-size: 1.05rem; font-weight: 600; letter-spacing: -0.02em; }
.close__fact span { font-size: var(--fs-xs); color: rgba(255, 255, 255, 0.6); }

.footer {
  margin-top: clamp(2.5rem, 5vw, 4rem);
  padding-block: clamp(2.5rem, 5vw, 4rem) 2rem;
}
.footer__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) repeat(3, minmax(0, 1fr));
  gap: clamp(2rem, 4vw, 3rem);
  padding-bottom: clamp(2rem, 4vw, 3rem);
  border-bottom: 1px solid var(--line);
}
.footer__brand { display: grid; gap: 0.9rem; align-content: start; max-width: 34ch; }
.footer__brand p { font-size: var(--fs-sm); color: var(--ink-2); }
.footer__col { display: grid; gap: 0.75rem; align-content: start; }
.footer__col h3 {
  font-family: var(--f-mono);
  font-size: 0.72rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--ink-3);
}
.footer__col a, .footer__col button {
  justify-self: start;
  font-size: var(--fs-sm);
  color: var(--ink-2);
  text-align: left;
  transition: color 0.3s var(--ease);
}
.footer__col a:hover, .footer__col button:hover { color: var(--accent-ink); }
.footer__legal {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 2rem;
  justify-content: space-between;
  padding-top: 1.5rem;
  font-size: var(--fs-xs);
  color: var(--ink-3);
}
.footer__legal p { max-width: 74ch; }

.toast {
  position: fixed;
  left: 50%;
  bottom: 1.5rem;
  z-index: 70;
  transform: translate(-50%, 150%);
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.7rem 1.15rem;
  border-radius: var(--r-pill);
  background: var(--ink);
  color: #fff;
  font-size: var(--fs-sm);
  font-weight: 500;
  box-shadow: var(--sh-3);
  transition: transform 0.55s var(--ease-soft);
}
.toast.is-in { transform: translate(-50%, 0); }
.toast .icon { width: 1rem; height: 1rem; color: #7fb0ff; }

/* --- reveals ------------------------------------------------------------ */
.rv {
  opacity: 0;
  transform: translate3d(0, 20px, 0);
  transition: opacity 0.85s var(--ease), transform 0.85s var(--ease);
  transition-delay: var(--d, 0ms);
}
.rv--blur { filter: blur(7px); transition-property: opacity, transform, filter; }
.rv.is-in { opacity: 1; transform: none; filter: none; }

/* --- responsive --------------------------------------------------------- */
@media (min-width: 1340px) {
  .hero__media { margin-right: calc((1240px - 100vw) / 2); }
}

@media (max-width: 1080px) {
  .grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .pkg--featured { grid-column: span 2; }
  .footer__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 960px) {
  :root { --sec: clamp(3.75rem, 11vw, 5.5rem); }
  .nav__links, .nav__end .btn { display: none; }
  .burger { display: block; }
  .scene,
  .panel__inner { grid-template-columns: minmax(0, 1fr); }
  .scene__aside { position: static; }
  .tools { grid-template-columns: minmax(0, 1fr); align-items: start; }
  .panel__inner { padding: 1.35rem; }
  .strip__facts { margin-left: 0; }
  .close__panel { border-radius: var(--r-card); }
}

@media (max-width: 640px) {
  :root { --shell: min(1240px, 100% - 2.5rem); }
  .grid { grid-template-columns: minmax(0, 1fr); gap: 0.85rem; }
  .pkg--featured { grid-column: span 1; }
  .footer__grid { grid-template-columns: minmax(0, 1fr); gap: 1.75rem; }
  .unl { grid-template-columns: minmax(0, 1fr); }
  .unl__price { justify-items: start; text-align: left; }
  .acc__inner p { padding-right: 1rem; }
  .carriers { gap: 1rem; }
  .catalog__meta span:last-child { display: none; }
  .btn { padding-left: 1.1rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .glow { animation: none; }
  .rv, .rv--blur { opacity: 1; transform: none; filter: none; transition: none; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
}

@media (prefers-reduced-transparency: reduce) {
  .nav, .spot, .overlay, .steps__tag { backdrop-filter: none; -webkit-backdrop-filter: none; background: #fff; }
  .overlay { background: #fff; }
}

@media print {
  .nav, .glow, .grain, .toast { display: none; }
}

/* VNPT-inspired refresh: bright telecom blue, clear cards, tighter rhythm */
:root {
  --canvas: #f7f9fc;
  --canvas-2: #eef5fb;
  --ink: #10233f;
  --ink-2: #415873;
  --ink-3: #64748b;
  --line: rgba(0, 101, 179, 0.11);
  --line-2: rgba(0, 101, 179, 0.22);
  --r-card: 18px;
  --r-panel: 28px;
  --shell: min(1400px, 100% - clamp(2rem, 6vw, 6rem));
  --sec: clamp(4rem, 7vw, 7rem);
}

body { background: linear-gradient(180deg, #fff 0, var(--canvas) 36rem); }
.glow, .grain { display: none; }

.nav {
  top: 0;
  left: 0;
  width: 100%;
  height: 72px;
  display: flex;
  align-items: center;
  padding: 0;
  border: 0;
  border-bottom: 1px solid var(--line);
  border-radius: 0;
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 8px 30px rgba(16, 35, 63, 0.06);
  transform: none;
}
.nav__shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
}
.nav.is-stuck { background: rgba(255,255,255,.98); }
.brand__mark {
  background: linear-gradient(135deg, var(--vina-cyan), var(--vina-blue));
  border-radius: 10px;
  box-shadow: 0 8px 20px rgba(var(--vina-blue-rgb),.24);
}

.hero--poster {
  position: relative;
  min-height: clamp(480px, 60vh, 580px);
  display: flex;
  align-items: center;
  overflow: hidden;
  background: #001a3d;
  color: #fff;
  padding-top: calc(72px + 2rem);
  padding-bottom: 2.75rem;
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 74% 20%;
  display: block;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    rgba(0, 20, 50, 0.94) 0%,
    rgba(0, 28, 68, 0.86) 42%,
    rgba(0, 38, 90, 0.45) 70%,
    rgba(0, 20, 50, 0.2) 100%
  );
}

.hero__shell {
  position: relative;
  z-index: 2;
}

.hero__content {
  max-width: 580px;
  display: grid;
  gap: 1.15rem;
}

.hero h1 {
  color: #fff;
  font-size: clamp(2.1rem, 3.8vw, 3.4rem);
  font-weight: 800;
  line-height: 1.16;
  letter-spacing: -0.025em;
  text-shadow: 0 2px 16px rgba(0, 16, 40, 0.5);
  margin: 0;
}

.hero__lead {
  color: rgba(255, 255, 255, 0.94);
  font-size: clamp(1rem, 1.15vw, 1.12rem);
  line-height: 1.62;
  text-shadow: 0 1px 8px rgba(0, 16, 40, 0.4);
  margin: 0;
  max-width: 52ch;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-top: 0.4rem;
}

.hero .btn--primary {
  color: #10233f;
  background: #FFD350;
  font-weight: 700;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
  border: 1px solid rgba(0, 0, 0, 0.06);
}
.hero .btn--primary:hover {
  background: #f5c432;
  box-shadow: 0 8px 24px rgba(255, 211, 80, 0.35);
}
.hero .btn--primary .btn__ic {
  background: rgba(16, 35, 63, 0.12);
}
.hero .btn--primary .btn__ic .icon {
  stroke: #10233f;
  stroke-width: 2.4;
}

.hero .btn--ghost {
  color: #fff;
  background: rgba(0, 25, 60, 0.45);
  border-color: rgba(255, 255, 255, 0.45);
  backdrop-filter: blur(8px);
}
.hero .btn--ghost:hover {
  border-color: #fff;
  background: rgba(0, 35, 80, 0.7);
}

@media (max-width: 960px) {
  .hero--poster {
    min-height: 460px;
    padding-top: calc(64px + 1.5rem);
    padding-bottom: 2.5rem;
  }
  .hero__bg img {
    object-position: 68% center;
  }
  .hero__overlay {
    background: linear-gradient(
      90deg,
      rgba(0, 20, 48, 0.95) 0%,
      rgba(0, 28, 65, 0.88) 50%,
      rgba(0, 36, 85, 0.55) 80%,
      rgba(0, 20, 50, 0.3) 100%
    );
  }
}

@media (max-width: 680px) {
  .hero--poster {
    min-height: 440px;
    padding-top: calc(64px + 1.25rem);
    padding-bottom: 2rem;
  }
  .hero__bg img {
    object-position: 72% center;
  }
  .hero__overlay {
    background: linear-gradient(
      180deg,
      rgba(0, 18, 42, 0.92) 0%,
      rgba(0, 26, 60, 0.85) 60%,
      rgba(0, 30, 70, 0.78) 100%
    );
  }
  .hero__content {
    max-width: 100%;
  }
}

/* --- vung giai thich (explanation area) --------------------------------- */
.strip { padding-block: 1rem 0; }
.strip__inner {
  border-color: var(--line);
  box-shadow: 0 14px 38px -30px rgba(16,35,63,.35);
}

.sec-head { margin-bottom: clamp(2rem, 3vw, 3rem); }
.h2 { font-weight: 700; }
.tools { position: sticky; top: 84px; z-index: 12; box-shadow: 0 18px 44px -34px rgba(16,35,63,.45); }
.chip[aria-pressed="true"] { background: var(--vina-blue); border-color: var(--vina-blue); }
.field__box { background: #fff; }

.grid { gap: 1.25rem; }
.pkg {
  position: relative;
  overflow: hidden;
  border-color: var(--line);
  box-shadow: 0 10px 28px -24px rgba(16,35,63,.42);
}
.pkg__media {
  aspect-ratio: 4 / 3;
  margin: calc(clamp(1.15rem, 2vw, 1.5rem) * -1);
  margin-bottom: 1.25rem;
  overflow: hidden;
  background: var(--vina-blue);
}
.pkg__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s var(--ease);
}
.pkg:hover .pkg__media img { transform: scale(1.025); }
.pkg::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 4px;
  background: linear-gradient(90deg, var(--vina-blue), var(--vina-cyan));
  opacity: 0;
  transition: opacity .25s ease;
}
.pkg:hover::before, .pkg--featured::before, .pkg--soft::before { opacity: 1; }
.pkg:hover { transform: translateY(-5px); box-shadow: 0 22px 46px -30px rgba(0,101,179,.38); }
.pkg--featured { border-color: rgba(var(--vina-blue-rgb),.28); }
.pkg--soft { background: linear-gradient(180deg, #fff 0%, #f2f9fe 100%); }
.pkg__carrier { color: var(--vina-blue); font-weight: 600; }
.pkg__name { color: var(--vina-blue-deep); }
.pkg__num { color: var(--ink); }
.pkg__cta { border-radius: 12px; }
.syntax { background: #f5f8fc; }

.steps__grid, .panel__inner, .unl, .close__panel { box-shadow: 0 20px 55px -42px rgba(16,35,63,.45); }
.tabs { padding-block: clamp(2rem,4vw,4rem); }
.panel__inner { border-color: rgba(var(--vina-blue-rgb),.16); }
.close__panel { background: linear-gradient(120deg, #003f79, #0065b3); }

@media (max-width: 960px) {
  .nav { height: 64px; padding: 0; }
  .hero { padding-top: calc(64px + 1.5rem); padding-bottom: 2.5rem; }
  .tools { position: static; }
}

@media (max-width: 640px) {
  :root { --shell: min(1240px, 100% - 2rem); --sec: 3.5rem; }
  .hero { padding-bottom: 2rem; }
  .hero__grid { gap: 1.5rem; }
  .hero__copy { gap: 1rem; }
  .hero__actions { width: 100%; }
  .hero__actions .btn { flex: 1 1 100%; justify-content: center; }
  .strip__inner { padding: 1rem; }
  .strip__facts { display: grid; gap: .6rem; }
  .tools { padding: 1rem; }
  .filters { flex-wrap: nowrap; overflow-x: auto; padding-bottom: .35rem; scrollbar-width: none; }
  .filters::-webkit-scrollbar { display: none; }
  .chip { flex: none; }
  .pkg { padding: 1.2rem; }
  .pkg__media { margin: -1.2rem -1.2rem 1.1rem; }
  .pkg--featured .pkg__name, .pkg__name { font-size: 1.35rem; }
  .pkg--featured .pkg__num, .pkg__num { font-size: 1.85rem; }
}

/* Layout simplification: one hierarchy, one grid, no duplicate signals */
:root { --shell: min(1240px, 100% - clamp(2rem, 6vw, 5rem)); }
.strip__inner { justify-content: center; }
.carriers { display: none; }
.strip__facts { margin-left: 0; justify-content: center; }
#goi-cuoc { padding-top: clamp(3.5rem, 6vw, 6rem); }
.tools { position: static; }
.grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.pkg--featured { grid-column: auto; box-shadow: 0 10px 28px -24px rgba(16,35,63,.42); }
.pkg--featured .pkg__inner { display: contents; }
.pkg--featured .pkg__list {
  margin: 1.15rem 0;
  padding: 1.15rem 0 0;
  border: 0;
  border-top: 1px solid var(--line);
}
.pkg--featured .pkg__foot { grid-column: auto; }
.pkg__carrier { display: none; }
.pkg__head:has(.badge) { justify-content: flex-end; }
.pkg__head:empty { display: none; }
.pkg--featured .pkg__name,
.pkg__name { margin-top: .55rem; font-size: 1.42rem; }
.pkg--featured .pkg__num,
.pkg__num { font-size: 1.9rem; }
.tabs, .panel__inner { border-radius: var(--r-card); }

@media (max-width: 1080px) {
  .grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .pkg--featured { grid-column: auto; }
}

@media (max-width: 640px) {
  .hero__grid { min-height: 0; }
  .strip__inner { justify-content: start; }
  .strip__facts { justify-content: start; }
  .grid { grid-template-columns: minmax(0, 1fr); }
}