/* Thập Niên Phong Sương – scoped for the CMS page. Generated by tools/build_cdn.py, do not edit. */
@font-face {
  font-family: "Noto Serif";
  src: url("https://cdn-mainsite-aka.vnggames.com/products/vltkm/landing/2026-thap-nien-phong-suong/assets/fonts/NotoSerif-Bold.woff2") format("woff2");
  font-weight: 700; font-display: swap;
}
@font-face {
  font-family: "Noto Serif";
  src: url("https://cdn-mainsite-aka.vnggames.com/products/vltkm/landing/2026-thap-nien-phong-suong/assets/fonts/NotoSerif-Regular.woff2") format("woff2");
  font-weight: 400; font-display: swap;
}
@font-face {
  font-family: "Be Vietnam Pro";
  src: url("https://cdn-mainsite-aka.vnggames.com/products/vltkm/landing/2026-thap-nien-phong-suong/assets/fonts/BeVietnamPro-Regular.woff2") format("woff2");
  font-weight: 400; font-display: swap;
}
@font-face {
  font-family: "Be Vietnam Pro";
  src: url("https://cdn-mainsite-aka.vnggames.com/products/vltkm/landing/2026-thap-nien-phong-suong/assets/fonts/BeVietnamPro-SemiBold.woff2") format("woff2");
  font-weight: 600; font-display: swap;
}

.tnps-root {
  --ink: #0f2235;        /* night water behind the card */
  --ink-2: #1c3d52;      /* teal haze */
  --mist: #a9c0cd;       /* secondary text */
  --gold: #e3c37f;       /* title gold, focus ring */
  --paper: #f6eedd;      /* parchment rows of the card */
  --seal: #9b1c14;       /* value red / seal stamp */
  --seal-hover: #b2241a;
  --text: #f3efe6;

  --serif: "Noto Serif", "Times New Roman", serif;
  --sans: "Be Vietnam Pro", system-ui, -apple-system, "Segoe UI", sans-serif;
  color-scheme: dark;
}

.tnps-root, .tnps-root *, .tnps-root::before, .tnps-root *::before, .tnps-root::after, .tnps-root *::after { box-sizing: border-box; }

.tnps-root {
  -webkit-text-size-adjust: 100%;
  background: var(--ink);
}

.tnps-root {
  margin: 0;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  font: 400 16px/1.6 var(--sans);
  color: var(--text);
  /* Page art: bg-pc.webp 1920×1080 / bg-mobile.webp 750×1624, anchored top.
     Its bottom edge must fade into --ink, which fills the rest of a long page.
     The gradients underneath show if the art is missing. */
  background:
    url("https://cdn-mainsite-aka.vnggames.com/products/vltkm/landing/2026-thap-nien-phong-suong/assets/page/bg-pc.webp") center top / max(1920px, 100%) auto no-repeat,
    radial-gradient(960px 480px at 50% 38%, rgba(120, 170, 190, .22), transparent 70%),
    linear-gradient(180deg, var(--ink) 0%, var(--ink-2) 55%, var(--ink) 100%);
  background-color: var(--ink);
  padding: env(safe-area-inset-top, 0) env(safe-area-inset-right, 0) env(safe-area-inset-bottom, 0) env(safe-area-inset-left, 0);
}

.tnps-root .page {
  flex: 1;
  width: 100%;
  max-width: 1024px;
  margin: 0 auto;
  padding: clamp(24px, 4vw, 40px) clamp(16px, 4vw, 32px) 32px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* Intro */
.tnps-root .intro { width: 100%; max-width: 736px; text-align: center; }
.tnps-root .intro h1 {
  margin: 0;
  font: 700 clamp(25.6px, 4.2vw, 40px)/1.2 var(--serif);
  color: var(--gold);
  text-wrap: balance;
}
.tnps-root .tagline img {
  display: block;
  width: min(480px, 88%);     /* 480 css px on desktop; the 1200 px file stays sharp on 2x screens */
  height: auto;
  margin: 0 auto;
}
/* Text stays for screen readers; shown on screen only when the art is missing. */
.tnps-root .tagline:not(.no-art) .tagline-text {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip-path: inset(50%); white-space: nowrap;
}
.tnps-root .intro p {
  max-width: 544px;
  margin: 12px auto 0;
  color: var(--mist);
  font-size: clamp(15.2px, 2.4vw, 17px);
  text-wrap: pretty;
}

/* Card */
.tnps-root .card-frame {
  margin: clamp(16px, 3vw, 32px) 0 0;
  width: min(100%, 832px);    /* keeps card + buttons inside a 1080p browser window */
  position: relative;
}
.tnps-root .card-frame img {
  display: block;
  width: 100%;
  height: auto;
  filter: drop-shadow(0 24px 40px rgba(4, 12, 22, .55));
  transition: opacity .25s ease;
  -webkit-touch-callout: default; /* allow long-press save in in-app browsers */
}
.tnps-root .card-frame[data-state="loading"] img { opacity: .45; }
.tnps-root .card-frame[data-state="loading"]::after {
  content: "";
  position: absolute;
  inset: 50% auto auto 50%;
  width: 40px; height: 40px;
  margin: -1.25rem 0 0 -1.25rem;
  border: 3px solid rgba(227, 195, 127, .3);
  border-top-color: var(--gold);
  border-radius: 50%;
  animation: tnps-spin .8s linear infinite;
}
.tnps-root .card-frame img.reveal { animation: tnps-reveal .7s cubic-bezier(.2, .7, .2, 1); }

@keyframes tnps-spin { to { transform: rotate(360deg); } }
@keyframes tnps-reveal {
  from { opacity: 0; transform: scale(.985); filter: blur(6px) drop-shadow(0 24px 40px rgba(4, 12, 22, .55)); }
  to   { opacity: 1; transform: none;        filter: blur(0)   drop-shadow(0 24px 40px rgba(4, 12, 22, .55)); }
}

/* Lookup form */
.tnps-root .lookup {
  width: min(100%, 544px);
  margin-top: clamp(20px, 3vw, 32px);
}
.tnps-root .lookup label {
  display: block;
  margin-bottom: 6.4px;
  font-weight: 600;
  font-size: 15px;
}
.tnps-root .lookup-row { display: flex; gap: 8px; }
.tnps-root .lookup input {
  flex: 1;
  min-width: 0;
  height: 52px;
  padding: 0 16px;
  border: 1px solid rgba(227, 195, 127, .55);
  border-radius: 6px;
  background: var(--paper);
  color: #22303c;
  font: 600 18px/1 var(--sans);
  font-variant-numeric: tabular-nums;
  letter-spacing: .04em;
}
.tnps-root .lookup input::placeholder { color: #8a8576; font-weight: 400; letter-spacing: 0; }

.tnps-root .message {
  min-height: 1.6em;
  margin: 8px 0 0;
  font-size: 15px;
}
.tnps-root .message[data-tone="error"] { color: #ffb4a8; }
.tnps-root .message[data-tone="ok"] { color: var(--gold); }
.tnps-root .message[data-tone="info"] { color: var(--mist); }

/* Buttons */
.tnps-root .btn {
  height: 52px;
  padding: 0 24px;
  border: 0;
  border-radius: 6px;
  font: 600 16px/1 var(--sans);
  cursor: pointer;
  white-space: nowrap;
  transition: background-color .15s ease, transform .1s ease;
}
.tnps-root .btn:active { transform: translateY(1px); }
.tnps-root .btn:disabled { cursor: progress; opacity: .75; }
.tnps-root .btn-seal {
  background: var(--seal);
  color: var(--paper);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .12);
}
.tnps-root .btn-seal:hover:not(:disabled) { background: var(--seal-hover); }
.tnps-root .btn-paper { background: var(--paper); color: #22303c; }
.tnps-root .btn-paper:hover { background: #fff8ea; }

.tnps-root :focus-visible {
  outline: 3px solid var(--gold);
  outline-offset: 2px;
}
.tnps-root .lookup input:focus-visible { outline-offset: 1px; }

/* Actions */
.tnps-root .actions {
  width: min(100%, 544px);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-top: 4px;
}
.tnps-root .actions[hidden] { display: none; }
.tnps-root .hint {
  grid-column: 1 / -1;
  margin: 4px 0 0;
  color: var(--mist);
  font-size: 14px;
  text-align: center;
}
.tnps-root .hint[hidden] { display: none; }

.tnps-root .footnote {
  padding: 24px 16px calc(24px + env(safe-area-inset-bottom, 0));
  text-align: center;
  color: var(--mist);
  font-size: 13px;
}
.tnps-root .footnote p { margin: 0; color: inherit; } /* inherit: a CMS page's own `p` colour must not win */
@media (max-width: 768px) {
  .tnps-root {
    background-image:
      url("https://cdn-mainsite-aka.vnggames.com/products/vltkm/landing/2026-thap-nien-phong-suong/assets/page/bg-mobile.webp"),
      radial-gradient(960px 480px at 50% 38%, rgba(120, 170, 190, .22), transparent 70%),
      linear-gradient(180deg, var(--ink) 0%, var(--ink-2) 55%, var(--ink) 100%);
    background-size: 100% auto, auto, auto;
  }
}

@media (max-width: 480px) {
  .tnps-root .lookup-row { flex-direction: column; }
  .tnps-root .lookup input { flex: none; width: 100%; }
  .tnps-root .lookup-row .btn { width: 100%; }
  .tnps-root .card-frame { width: calc(100% + 24px); } /* let the art breathe edge to edge */
}

@media (prefers-reduced-motion: reduce) {
  .tnps-root .card-frame img.reveal { animation: none; }
  .tnps-root .card-frame[data-state="loading"]::after { animation-duration: 2.4s; }
  .tnps-root .btn { transition: none; }
}