/* OneStack v279 - Trang kỷ niệm 10 năm */
body.oneweb-template-anniversary {
  background: #fffdfa;
  color: #10233a;
}

.os10-page,
.os10-page * {
  box-sizing: border-box;
}

.os10-page {
  --os10-navy: #001b34;
  --os10-navy-2: #052b4a;
  --os10-gold: #d99113;
  --os10-gold-2: #f5bd43;
  --os10-gold-3: #ffe294;
  --os10-ink: #13243a;
  --os10-muted: #667384;
  --os10-border: rgba(218, 145, 24, .34);
  --os10-cream: #fffaf0;
  --os10-shadow: 0 18px 48px rgba(36, 45, 59, .08);
  overflow: hidden;
  background:
    radial-gradient(circle at 6% 36%, rgba(234, 169, 52, .05), transparent 23%),
    linear-gradient(180deg, #fff 0%, #fffdfa 100%);
  font-family: "Roboto", Arial, sans-serif;
  line-height: 1.55;
}

.os10-page img {
  max-width: 100%;
  display: block;
}

.os10-page svg {
  width: 1em;
  height: 1em;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.os10-page a {
  text-decoration: none;
}

.os10-shell {
  width: min(100% - 48px, 1180px);
  margin-inline: auto;
}

.os10-hero {
  min-height: 450px;
  display: flex;
  align-items: center;
  color: #fff;
  position: relative;
  isolation: isolate;
  background:
    radial-gradient(circle at 75% 45%, rgba(235, 171, 45, .14), transparent 34%),
    linear-gradient(100deg, #00182e 0%, #002541 58%, #00172d 100%);
}

.os10-hero::before,
.os10-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: -1;
}

.os10-hero::before {
  opacity: .26;
  background-image:
    radial-gradient(circle, rgba(255, 195, 73, .75) 0 1px, transparent 1.6px),
    radial-gradient(circle, rgba(255, 255, 255, .45) 0 1px, transparent 1.7px);
  background-size: 78px 78px, 123px 123px;
  background-position: 20px 15px, 55px 48px;
  mask-image: linear-gradient(90deg, transparent, #000 25%, #000 100%);
}

.os10-hero::after {
  background: linear-gradient(90deg, rgba(0, 24, 46, .96) 0%, rgba(0, 24, 46, .58) 43%, rgba(0, 24, 46, .05) 76%);
}

.os10-hero__grid {
  min-height: 450px;
  display: grid;
  grid-template-columns: minmax(0, .92fr) minmax(520px, 1.28fr);
  align-items: center;
  gap: 10px;
  position: relative;
}

.os10-hero__content {
  position: relative;
  z-index: 2;
  padding: 48px 0 42px;
}

.os10-script {
  width: clamp(255px, 22vw, 360px);
  max-width: 100%;
  margin: 0 0 8px;
  line-height: 0;
  transform: rotate(-3deg);
  transform-origin: left center;
}

.os10-script img {
  display: block;
  width: 100%;
  height: auto;
  max-width: none;
}

.os10-hero h1 {
  margin: 0;
  max-width: 560px;
  font-family: "Roboto", Arial, sans-serif !important;
  letter-spacing: -.03em;
  line-height: .98;
}

.os10-hero h1 span,
.os10-hero h1 strong {
  display: block;
}

.os10-hero h1 span {
  color: #fff;
  font-size: clamp(38px, 4.4vw, 66px);
  font-weight: 900;
}

.os10-hero h1 strong {
  margin-top: 9px;
  color: var(--os10-gold-2);
  font-size: clamp(36px, 4.2vw, 62px);
  font-weight: 900;
}

.os10-hero__lead {
  margin: 20px 0 18px;
  color: rgba(255,255,255,.93);
  font-size: clamp(16px, 1.6vw, 22px);
  line-height: 1.45;
}

.os10-date {
  width: max-content;
  max-width: 100%;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-height: 48px;
  padding: 0 18px;
  border: 2px solid var(--os10-gold);
  border-radius: 7px;
  color: var(--os10-gold-2);
  background: rgba(0, 18, 35, .78);
  font-size: 18px;
  font-weight: 800;
}

.os10-date svg {
  font-size: 23px;
}

.os10-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 20px;
}

.os10-btn {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  border: 1px solid transparent;
  border-radius: 7px;
  padding: 0 22px;
  position: relative;
  overflow: hidden;
  cursor: pointer;
  font: 800 14px/1 "Roboto", Arial, sans-serif;
  transition: transform .2s ease, box-shadow .2s ease, color .2s ease, border-color .2s ease, background .2s ease;
}

.os10-btn::after {
  content: "";
  position: absolute;
  top: -45%;
  left: -65%;
  width: 36%;
  height: 190%;
  transform: rotate(24deg);
  background: linear-gradient(90deg, transparent, rgba(255,255,255,.8), transparent);
  transition: left .55s ease;
}

.os10-btn:hover::after,
.os10-btn:focus-visible::after {
  left: 130%;
}

.os10-btn:hover,
.os10-btn:focus-visible {
  transform: translateY(-2px);
}

.os10-btn--primary {
  color: #14263c !important;
  background: linear-gradient(180deg, #ffd967 0%, #e6a422 100%);
  box-shadow: 0 10px 26px rgba(224, 150, 22, .25), inset 0 1px rgba(255,255,255,.7);
}

.os10-btn--primary:hover,
.os10-btn--primary:focus-visible {
  color: #08182a !important;
  box-shadow: 0 14px 32px rgba(224, 150, 22, .38), inset 0 1px rgba(255,255,255,.8);
}

.os10-btn--outline {
  border-color: var(--os10-gold);
  color: var(--os10-gold-2) !important;
  background: rgba(0, 23, 44, .68);
}

.os10-btn--outline:hover,
.os10-btn--outline:focus-visible {
  color: #13243a !important;
  background: var(--os10-gold-2);
}

.os10-hero__visual {
  align-self: stretch;
  min-width: 0;
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  margin-right: calc((100vw - min(100vw - 48px, 1180px)) / -2);
}

.os10-hero__visual img {
  width: min(100%, 760px);
  min-height: 330px;
  object-fit: cover;
  object-position: left center;
  filter: saturate(1.07) contrast(1.03);
  mask-image: linear-gradient(90deg, transparent 0%, rgba(0,0,0,.72) 13%, #000 30%, #000 100%);
}

.os10-section {
  padding: 18px 0;
  scroll-margin-top: 90px;
}

.os10-section--timeline {
  padding-top: 14px;
}

.os10-section-title {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  margin: 0 0 10px;
  text-align: center;
}

.os10-section-title h2 {
  margin: 0;
  color: #15263c;
  font-family: "Roboto", Arial, sans-serif !important;
  font-size: clamp(17px, 1.65vw, 23px);
  font-weight: 900;
  letter-spacing: -.01em;
  white-space: nowrap;
}

.os10-section-title > span {
  width: min(150px, 13vw);
  height: 1px;
  position: relative;
  background: linear-gradient(90deg, transparent, var(--os10-gold));
}

.os10-section-title > span:last-child {
  transform: scaleX(-1);
}

.os10-section-title > span::after {
  content: "";
  position: absolute;
  right: 0;
  top: 50%;
  width: 6px;
  height: 6px;
  background: var(--os10-gold);
  transform: translate(50%,-50%) rotate(45deg);
}

.os10-card {
  border: 1px solid var(--os10-border);
  border-radius: 13px;
  background: rgba(255,255,255,.95);
  box-shadow: var(--os10-shadow);
}

.os10-timeline {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  padding: 20px 16px 16px;
  position: relative;
  overflow: hidden;
}

.os10-timeline::before {
  content: "";
  position: absolute;
  left: 7.6%;
  right: 7.6%;
  top: 88px;
  height: 2px;
  background: linear-gradient(90deg, #d58d12, #e7ae45, #d58d12);
}

.os10-timeline__item {
  min-width: 0;
  position: relative;
  text-align: center;
  padding: 0 11px 10px;
  transition: transform .35s ease, filter .35s ease;
}

.os10-timeline__item:not(:last-child)::after {
  content: "";
  position: absolute;
  right: 0;
  top: 10px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(transparent, rgba(218,145,24,.28), transparent);
}

.os10-timeline__icon {
  width: 62px;
  height: 62px;
  display: grid;
  place-items: center;
  margin: 0 auto 10px;
  border: 1px solid rgba(218,145,24,.38);
  border-radius: 50%;
  color: var(--os10-gold);
  background: #fff;
  font-size: 31px;
  box-shadow: 0 10px 22px rgba(218,145,24,.08);
  position: relative;
  overflow: visible;
  isolation: isolate;
  transition: transform .35s ease, color .35s ease, background .35s ease, border-color .35s ease, box-shadow .35s ease;
}

.os10-timeline__icon::before,
.os10-timeline__icon::after {
  content: "";
  position: absolute;
  inset: -7px;
  border-radius: 50%;
  opacity: 0;
  pointer-events: none;
  transition: opacity .35s ease, transform .45s ease;
}

.os10-timeline__icon::before {
  background: radial-gradient(circle, rgba(255, 214, 102, .3) 0%, rgba(255, 214, 102, .12) 42%, rgba(255, 214, 102, 0) 72%);
  transform: scale(.75);
  z-index: -2;
}

.os10-timeline__icon::after {
  inset: -5px;
  border: 1px dashed rgba(218,145,24,.48);
  transform: scale(.84) rotate(-10deg);
  z-index: -1;
}

.os10-timeline__icon svg {
  transition: transform .45s ease, filter .35s ease;
}

.os10-timeline__number {
  width: 25px;
  height: 25px;
  display: grid;
  place-items: center;
  margin: 0 auto 6px;
  border: 3px solid #fff;
  border-radius: 50%;
  position: relative;
  z-index: 2;
  color: #fff;
  background: linear-gradient(180deg, #e6a523, #bd7409);
  box-shadow: 0 0 0 1px var(--os10-gold);
  font-size: 12px;
  font-weight: 900;
  transition: transform .35s ease, box-shadow .35s ease, background .35s ease;
}

.os10-timeline__item:hover,
.os10-timeline__item:focus-within {
  transform: translateY(-6px);
}

.os10-timeline__item:hover .os10-timeline__icon,
.os10-timeline__item:focus-within .os10-timeline__icon {
  transform: translateY(-6px) scale(1.08);
  color: #fff;
  border-color: rgba(218,145,24,.86);
  background: linear-gradient(180deg, #f3bd49 0%, #d68b12 100%);
  box-shadow: 0 18px 34px rgba(218,145,24,.28), 0 0 0 8px rgba(218,145,24,.08);
}

.os10-timeline__item:hover .os10-timeline__icon::before,
.os10-timeline__item:focus-within .os10-timeline__icon::before {
  opacity: 1;
  transform: scale(1.16);
}

.os10-timeline__item:hover .os10-timeline__icon::after,
.os10-timeline__item:focus-within .os10-timeline__icon::after {
  opacity: 1;
  transform: scale(1.08) rotate(20deg);
}

.os10-timeline__item:hover .os10-timeline__icon svg,
.os10-timeline__item:focus-within .os10-timeline__icon svg {
  transform: scale(1.08) rotate(-5deg);
  filter: drop-shadow(0 2px 6px rgba(255,255,255,.28));
}

.os10-timeline__item:hover .os10-timeline__number,
.os10-timeline__item:focus-within .os10-timeline__number {
  transform: scale(1.12);
  background: linear-gradient(180deg, #f6c85c, #cf8111);
  box-shadow: 0 0 0 1px var(--os10-gold), 0 10px 18px rgba(218,145,24,.24);
}

.os10-timeline h3 {
  margin: 0 0 4px;
  color: #14263d;
  font: 900 18px/1.2 "Roboto", Arial, sans-serif !important;
  transition: color .3s ease, transform .3s ease;
}

.os10-timeline__item:hover h3,
.os10-timeline__item:focus-within h3 {
  color: #b86d08;
  transform: translateY(-2px);
}

.os10-timeline p {
  margin: 0 auto;
  max-width: 145px;
  color: #26374b;
  font-size: 13px;
  line-height: 1.35;
  transition: color .3s ease;
}

.os10-timeline__item:hover p,
.os10-timeline__item:focus-within p {
  color: #17324d;
}

.os10-promo {
  min-height: 200px;
  display: grid;
  grid-template-columns: 1fr;
  align-items: center;
  overflow: hidden;
  position: relative;
  background: url("https://onestacktech.com/wp-content/uploads/2026/08/Nen-khuyen-mai-1.png") center/cover no-repeat;
}

.os10-promo::before,
.os10-promo::after {
  content: "";
  position: absolute;
  width: 130px;
  height: 26px;
  border-radius: 50%;
  border-top: 6px solid rgba(222,150,22,.7);
  transform: rotate(28deg);
  pointer-events: none;
}

.os10-promo::before { left: 32px; top: 16px; }
.os10-promo::after { right: 22px; bottom: 20px; transform: rotate(-35deg); }

.os10-promo__image {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8px 20px;
  position: relative;
  z-index: 1;
}

.os10-promo__image img {
  width: min(100%, 360px);
  border-radius: 10px;
  mix-blend-mode: multiply;
}

.os10-promo__content {
  width: 100%;
  padding: 34px 46px 30px;
  position: relative;
  z-index: 1;
}

.os10-promo--no-gift {
  background-position: center center;
}

.os10-promo--no-gift .os10-promo__content {
  width: min(100%, 64%);
  margin-left: auto;
  padding: 34px 42px 30px 34px;
  background: linear-gradient(90deg, rgba(255,255,255,0) 0%, rgba(255,251,244,.82) 12%, rgba(255,251,244,.92) 100%);
  backdrop-filter: blur(0.4px);
}

.os10-promo h2 {
  margin: 0 0 14px;
  color: #17263a;
  font: 900 clamp(21px, 2vw, 31px)/1.25 "Roboto", Arial, sans-serif !important;
  letter-spacing: -.025em;
}

.os10-promo__features {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  padding-top: 10px;
  border-top: 1px solid rgba(218,145,24,.25);
}

.os10-promo ul,
.os10-rules ul,
.os10-contest ol {
  list-style: none;
  padding: 0;
  margin: 0;
}

.os10-promo li {
  position: relative;
  margin: 7px 0;
  padding-left: 24px;
  color: #354357;
  font-size: 14px;
}

.os10-promo li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 1px;
  width: 16px;
  height: 16px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: #fff;
  background: var(--os10-gold);
  font-size: 10px;
  font-weight: 900;
}

.os10-note {
  margin: 8px 0 0;
  color: #7a7f88;
  font-size: 12px;
}

.os10-register {
  padding: 16px 18px 18px;
}

.os10-stats {
  display: grid;
  grid-template-columns: 1fr .64fr 1fr;
  min-height: 105px;
  border: 1px solid rgba(218,145,24,.28);
  border-radius: 9px;
  overflow: hidden;
  background: #fffdfa;
}

.os10-stat {
  min-width: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  padding: 16px 24px;
}

.os10-stat:first-child {
  border-right: 1px solid rgba(218,145,24,.22);
}

.os10-stat:last-child {
  border-left: 1px solid rgba(218,145,24,.22);
}

.os10-stat__icon {
  color: var(--os10-gold);
  font-size: 47px;
}

.os10-stat small {
  display: block;
  max-width: 210px;
  color: #203047;
  font-size: 12px;
  font-weight: 800;
  line-height: 1.35;
}

.os10-stat strong {
  display: block;
  margin-top: 4px;
  color: #0b2037;
  font-size: 33px;
  line-height: 1;
}

.os10-progress {
  display: grid;
  place-items: center;
  padding: 10px;
}

.os10-progress > div {
  width: 92px;
  height: 92px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  padding: 10px 8px;
  text-align: center;
  border-radius: 50%;
  position: relative;
  background: conic-gradient(var(--os10-gold) var(--os10-progress), #e8e9eb 0);
}

.os10-progress > div::before {
  content: "";
  position: absolute;
  inset: 9px;
  border-radius: inherit;
  background: #fff;
}

.os10-progress strong,
.os10-progress span {
  position: relative;
  z-index: 1;
}

.os10-progress strong {
  color: #0c1f36;
  font-size: 23px;
  line-height: 1;
}

.os10-progress span {
  color: #23344a;
  font-size: 8px;
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: .02em;
  max-width: 44px;
  display: block;
}

.os10-live-note {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin: 9px 0 12px;
  color: #626a76;
  font-size: 12px;
}

.os10-live-note svg {
  color: var(--os10-gold);
  font-size: 17px;
}

.os10-live-note > span {
  display: inline;
  word-spacing: normal;
  letter-spacing: normal;
}


.os10-form-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 290px;
  gap: 16px;
  align-items: stretch;
}

.os10-form-tabs {
  min-width: 0;
}

.os10-tab-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 12px;
}

.os10-tab-button {
  position: relative;
  min-width: 0;
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 11px;
  padding: 12px 16px;
  overflow: hidden;
  border: 1px solid rgba(218,145,24,.3);
  border-radius: 10px;
  color: #24364d;
  background: #fff;
  box-shadow: 0 5px 16px rgba(18,35,55,.05);
  text-align: left;
  cursor: pointer;
  transition: border-color .2s ease, box-shadow .2s ease, transform .2s ease, background .2s ease;
}

.os10-tab-button::after {
  content: "";
  position: absolute;
  inset: auto 14px 0;
  height: 3px;
  border-radius: 999px 999px 0 0;
  background: transparent;
  transition: background .2s ease;
}

.os10-tab-button:hover {
  border-color: rgba(218,145,24,.65);
  box-shadow: 0 8px 22px rgba(18,35,55,.09);
  transform: translateY(-1px);
}

.os10-tab-button:focus-visible {
  outline: 3px solid rgba(218,145,24,.24);
  outline-offset: 2px;
}

.os10-tab-button.is-active {
  border-color: #e4a229;
  color: #14263e;
  background: linear-gradient(135deg, #fff9e9 0%, #fff 70%);
  box-shadow: 0 8px 24px rgba(218,145,24,.16);
}

.os10-tab-button.is-active::after {
  background: linear-gradient(90deg, #e6a326, #ffd56b);
}

.os10-tab-button__icon {
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  color: var(--os10-gold);
  font-size: 27px;
}

.os10-tab-button > span:last-child {
  min-width: 0;
  display: grid;
  gap: 3px;
}

.os10-tab-button strong {
  color: inherit;
  font: 900 14px/1.25 "Roboto", Arial, sans-serif !important;
}

.os10-tab-button small {
  color: #707a88;
  font-size: 10px;
  line-height: 1.35;
}

.os10-tab-panels {
  min-width: 0;
}

.os10-tab-panel[hidden] {
  display: none !important;
}

.os10-tab-panel.is-active {
  animation: os10-tab-in .24s ease both;
}

@keyframes os10-tab-in {
  from { opacity: 0; transform: translateY(5px); }
  to { opacity: 1; transform: translateY(0); }
}

.os10-form-card,
.os10-status {
  min-width: 0;
  border: 1px solid rgba(218,145,24,.25);
  border-radius: 10px;
  padding: 18px;
  background: #fff;
}

.os10-form-intro {
  display: flex;
  align-items: center;
  gap: 11px;
  margin-bottom: 15px;
  padding-bottom: 13px;
  border-bottom: 1px solid #edf0f3;
}

.os10-form-intro > span {
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  color: var(--os10-gold);
  background: #fff8e8;
  font-size: 23px;
}

.os10-form-intro h3 {
  margin: 0;
  color: #172a42;
  font: 900 15px/1.25 "Roboto", Arial, sans-serif !important;
}

.os10-form-intro p {
  margin: 3px 0 0;
  color: #707a88;
  font-size: 11px;
  line-height: 1.45;
}

.os10-status > header {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-bottom: 12px;
  text-align: center;
}

.os10-status > header > span {
  color: var(--os10-gold);
  font-size: 25px;
}

.os10-status h3 {
  margin: 0;
  color: #1a2a40;
  font: 900 13px/1.2 "Roboto", Arial, sans-serif !important;
}

.os10-ajax-form {
  display: grid;
  gap: 10px;
}

.os10-ajax-form label {
  display: grid;
  gap: 3px;
  color: #313e51;
  font-size: 12px;
  font-weight: 700;
}

.os10-ajax-form input,
.os10-ajax-form select,
.os10-ajax-form textarea {
  width: 100%;
  min-width: 0;
  border: 1px solid #d9dee5;
  border-radius: 5px;
  padding: 10px 12px;
  color: #18283d;
  background: #fff;
  font: 400 13px/1.4 "Roboto", Arial, sans-serif;
  outline: none;
  transition: border-color .18s ease, box-shadow .18s ease;
}

.os10-ajax-form select,
.os10-ajax-form input {
  height: 42px;
}

.os10-ajax-form textarea {
  min-height: 82px;
  resize: vertical;
}

.os10-ajax-form input:focus,
.os10-ajax-form select:focus,
.os10-ajax-form textarea:focus {
  border-color: var(--os10-gold);
  box-shadow: 0 0 0 3px rgba(218,145,24,.12);
}

.os10-ajax-form input:disabled,
.os10-ajax-form select:disabled,
.os10-ajax-form textarea:disabled {
  cursor: not-allowed;
  background: #f3f3f3;
}

.os10-fields-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.os10-submit {
  width: 100%;
  min-height: 44px;
  margin-top: 2px;
  border: 0;
  font-size: 12px;
}

.os10-submit:disabled {
  cursor: not-allowed;
  color: #fff !important;
  background: #b9bdc2;
  box-shadow: none;
}

.os10-form-message {
  min-height: 0;
  margin: 0;
  border-radius: 5px;
  font-size: 11px;
  line-height: 1.4;
}

.os10-form-message:not(:empty) {
  padding: 8px 9px;
}

.os10-form-message.is-success {
  color: #116832;
  background: #eefaf1;
}

.os10-form-message.is-error {
  color: #9c2525;
  background: #fff0f0;
}

.os10-secure {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin: 8px 0 0;
  color: #777f89;
  text-align: center;
  font-size: 10px;
  line-height: 1.45;
}

.os10-secure svg {
  color: var(--os10-gold);
  font-size: 15px;
}

.os10-secure--gold {
  color: #977019;
}

.os10-hp {
  position: absolute !important;
  left: -9999px !important;
  opacity: 0 !important;
}

.os10-status {
  display: flex;
  flex-direction: column;
  background: linear-gradient(180deg, #fff, #fbfbfb);
}

.os10-status__box {
  min-height: 122px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px;
  border: 1px solid #e0e3e7;
  border-radius: 7px;
  color: #334155;
  background: #fff;
}

.os10-status__lock {
  color: #8e98a4;
  font-size: 37px;
}

.os10-status__box p {
  max-width: 160px;
  margin: 0;
  font-size: 12px;
  line-height: 1.4;
}

.os10-status ol {
  margin: 12px 0;
  padding: 0 0 0 25px;
  color: #9a9fa7;
  font-size: 10px;
  line-height: 1.9;
}

.os10-status__closed {
  margin-top: auto;
  min-height: 42px;
  display: grid;
  place-items: center;
  border-radius: 6px;
  color: #6f757d;
  background: #e2e2e2;
  font-size: 12px;
}

.os10-status.is-confirmed .os10-status__box {
  border-color: #9ad2aa;
  color: #175f30;
  background: #effaf2;
}

.os10-status.is-confirmed .os10-status__lock {
  color: #25a45a;
}

.os10-status.is-confirmed .os10-status__closed {
  color: #153b24;
  background: #ccefd7;
}

.os10-faq-grid {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  align-items: start;
  gap: 18px;
  padding: 16px 18px;
}

.os10-accordion {
  display: grid;
  gap: 6px;
}

.os10-faq-item {
  border: 1px solid #dfe3e8;
  border-radius: 6px;
  overflow: hidden;
  background: #fff;
  transform: translateZ(0);
  transition: border-color .22s ease, box-shadow .22s ease;
}

.os10-faq-item.is-open {
  border-color: rgba(218,145,24,.35);
  box-shadow: 0 8px 22px rgba(19,38,61,.06);
}

.os10-faq-item button {
  width: 100%;
  min-height: 36px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  border: 0;
  padding: 7px 12px;
  color: #334155;
  background: #fff;
  cursor: pointer;
  text-align: left;
  font: 500 11px/1.35 "Roboto", Arial, sans-serif;
}

.os10-faq-item button b {
  color: #5a6675;
  font-size: 17px;
  transform-origin: center;
  transition: transform .24s cubic-bezier(.22, 1, .36, 1), color .2s ease;
}

.os10-faq-item.is-open button b {
  transform: rotate(45deg);
}

.os10-faq-answer {
  display: grid;
  grid-template-rows: 0fr;
  opacity: 0;
  visibility: hidden;
  transition:
    grid-template-rows .3s cubic-bezier(.22, 1, .36, 1),
    opacity .2s ease,
    visibility 0s linear .3s;
}

.os10-faq-answer__inner {
  min-height: 0;
  overflow: hidden;
}

.os10-faq-answer p {
  margin: 0;
  padding: 0 12px 11px;
  color: #667384;
  font-size: 11px;
  transform: translateY(-4px);
  opacity: 0;
  transition:
    transform .28s cubic-bezier(.22, 1, .36, 1),
    opacity .2s ease;
}

.os10-faq-item.is-open .os10-faq-answer {
  grid-template-rows: 1fr;
  opacity: 1;
  visibility: visible;
  transition:
    grid-template-rows .3s cubic-bezier(.22, 1, .36, 1),
    opacity .2s ease,
    visibility 0s;
}

.os10-faq-item.is-open .os10-faq-answer p {
  transform: translateY(0);
  opacity: 1;
}

.os10-rules {
  position: relative;
  padding: 10px 85px 10px 14px;
  border: 1px solid rgba(218,145,24,.26);
  border-radius: 7px;
  background: #fffaf1;
}

.os10-rules > div {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.os10-rules h3 {
  margin: 0 0 6px;
  color: #b47710;
  font: 900 12px/1.2 "Roboto", Arial, sans-serif !important;
}

.os10-rules > div span {
  position: absolute;
  right: 24px;
  top: 22px;
  color: var(--os10-gold);
  font-size: 46px;
}

.os10-rules li {
  position: relative;
  margin: 5px 0;
  padding-left: 17px;
  color: #495568;
  font-size: 10px;
}

.os10-rules li::before {
  content: "◇";
  position: absolute;
  left: 0;
  color: var(--os10-gold);
  font-weight: 900;
}

.os10-news-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
}

.os10-news-card {
  min-width: 0;
  overflow: hidden;
  border: 1px solid #e2e5e9;
  border-radius: 7px;
  background: #fff;
  box-shadow: 0 10px 24px rgba(20,35,55,.05);
  transition: transform .2s ease, box-shadow .2s ease;
}

.os10-news-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 32px rgba(20,35,55,.12);
}

.os10-news-card a {
  display: block;
  color: inherit;
}

.os10-news-card img {
  width: 100%;
  aspect-ratio: 2.2 / 1;
  object-fit: cover;
}

.os10-news-card > a > div {
  padding: 10px 10px 12px;
}

.os10-news-card h3 {
  min-height: 38px;
  margin: 0 0 8px;
  color: #1c2a3e;
  font: 700 12px/1.4 "Roboto", Arial, sans-serif !important;
}

.os10-news-card p {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 4px;
  margin: 0 0 9px;
  color: #8a9099;
  font-size: 8px;
}

.os10-news-card p span {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: #b6bac0;
}

.os10-news-card strong {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: #c47d08;
  font-size: 9px;
}

.os10-center {
  display: flex;
  justify-content: center;
  margin-top: 10px;
}

.os10-link-more {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 6px 16px;
  border: 1px solid rgba(218,145,24,.35);
  border-radius: 99px;
  color: #25354a !important;
  background: #fff;
  font-size: 10px;
  font-weight: 700;
  transition: color .2s ease, border-color .2s ease, background .2s ease;
}

.os10-link-more:hover {
  border-color: var(--os10-gold);
  color: #fff !important;
  background: var(--os10-gold);
}

.os10-contest {
  display: grid;
  grid-template-columns: 1.08fr 1fr 1fr 1fr 1.15fr 1fr;
  min-height: 145px;
  overflow: hidden;
}

.os10-contest > div {
  min-width: 0;
  padding: 16px 14px;
  position: relative;
}

.os10-contest > div:not(:last-child)::after {
  content: "";
  position: absolute;
  top: 17px;
  right: 0;
  bottom: 17px;
  width: 1px;
  background: rgba(218,145,24,.24);
}

.os10-contest__logo {
  display: grid;
  place-items: center;
}

.os10-contest__logo img {
  width: 180px;
  border-radius: 6px;
  mix-blend-mode: multiply;
}

.os10-contest h3 {
  margin: 0 0 9px;
  color: #bd780c;
  font: 900 11px/1.3 "Roboto", Arial, sans-serif !important;
}

.os10-contest p,
.os10-contest li,
.os10-contest small {
  color: #374357;
  font-size: 9px;
  line-height: 1.6;
}

.os10-contest p {
  margin: 0 0 4px;
  font-weight: 600;
}

.os10-contest ol {
  counter-reset: contest;
}

.os10-contest li {
  counter-increment: contest;
  position: relative;
  padding-left: 25px;
}

.os10-contest li::before {
  content: "0" counter(contest);
  position: absolute;
  left: 0;
  color: var(--os10-gold);
  font-weight: 900;
}

.os10-contest__deadline {
  text-align: center;
  background: linear-gradient(180deg, #fffaf0, #fff);
}

.os10-contest__deadline strong {
  display: block;
  margin: 5px 0 10px;
  color: #17283e;
  font-size: 13px;
}

.os10-contest__deadline .os10-btn {
  width: 100%;
  min-height: 36px;
  padding: 0 10px;
  font-size: 10px;
}

.os10-contest__deadline small {
  display: block;
  margin-top: 7px;
}

.os10-backtop {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border: 0;
  border-radius: 50%;
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 100;
  color: #17283e;
  background: linear-gradient(180deg, #ffd767, #e5a025);
  box-shadow: 0 12px 26px rgba(0,0,0,.2);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity .2s ease, visibility .2s ease, transform .2s ease;
}

.os10-backtop svg {
  transform: rotate(-90deg);
  font-size: 20px;
}

.os10-backtop.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

[data-os10-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .55s ease, transform .55s ease;
}

[data-os10-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  [data-os10-reveal],
  .os10-btn,
  .os10-btn::after,
  .os10-news-card,
  .os10-backtop,
  .os10-faq-answer,
  .os10-tab-panel {
    transition: none !important;
  }
}

@media (max-width: 1100px) {
  .os10-hero__grid {
    grid-template-columns: minmax(0, .85fr) minmax(460px, 1.15fr);
  }

  .os10-form-grid {
    grid-template-columns: 1fr;
  }

  .os10-status {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: .8fr 1fr .8fr .7fr;
    align-items: center;
    gap: 12px;
  }

  .os10-status > header,
  .os10-status ol {
    margin: 0;
  }

  .os10-status__box {
    min-height: 78px;
  }

  .os10-status__closed {
    margin: 0;
  }

  .os10-tab-button {
    min-height: 76px;
  }

  .os10-contest {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .os10-contest > div:nth-child(3)::after,
  .os10-contest > div:nth-child(6)::after {
    display: none;
  }

  .os10-contest > div:nth-child(-n+3) {
    border-bottom: 1px solid rgba(218,145,24,.24);
  }
}

@media (max-width: 900px) {
  .os10-shell {
    width: min(100% - 32px, 1180px);
  }

  .os10-hero,
  .os10-hero__grid {
    min-height: auto;
  }

  .os10-hero__grid {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .os10-hero__content {
    padding: 42px 0 20px;
    text-align: center;
  }

  .os10-hero h1,
  .os10-hero__lead {
    margin-inline: auto;
  }

  .os10-date,
  .os10-hero__actions {
    margin-left: auto;
    margin-right: auto;
    justify-content: center;
  }

  .os10-hero__visual {
    margin: 0 -16px;
    justify-content: center;
  }

  .os10-hero__visual img {
    width: 100%;
    min-height: 250px;
    object-fit: cover;
    mask-image: linear-gradient(180deg, transparent 0%, #000 18%, #000 100%);
  }

  .os10-hero::after {
    background: linear-gradient(180deg, rgba(0,24,46,.96) 0%, rgba(0,24,46,.82) 48%, rgba(0,24,46,.1) 100%);
  }

  .os10-timeline {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px 0;
  }

  .os10-timeline::before {
    display: none;
  }

  .os10-timeline__item:nth-child(3)::after,
  .os10-timeline__item:nth-child(6)::after {
    display: none;
  }

  .os10-promo {
    grid-template-columns: 1fr;
  }

  .os10-promo__content {
    padding: 30px 28px 28px;
  }

  .os10-promo--no-gift .os10-promo__content {
    width: 100%;
    margin-left: 0;
    padding: 30px 28px 28px;
    background: linear-gradient(180deg, rgba(255,251,244,.86) 0%, rgba(255,251,244,.92) 100%);
  }

  .os10-news-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .os10-faq-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 700px) {
  .os10-section {
    padding: 14px 0;
  }

  .os10-section-title {
    gap: 10px;
  }

  .os10-section-title h2 {
    white-space: normal;
  }

  .os10-section-title > span {
    width: 35px;
    flex: 0 0 35px;
  }

  .os10-promo {
    grid-template-columns: 1fr;
  }

  .os10-promo__content {
    padding: 24px 20px 26px;
  }

  .os10-promo--no-gift .os10-promo__content {
    width: 100%;
    margin-left: 0;
    padding: 24px 20px 26px;
    background: linear-gradient(180deg, rgba(255,251,244,.88) 0%, rgba(255,251,244,.94) 100%);
  }

  .os10-promo h2 {
    text-align: center;
  }

  .os10-stats {
    grid-template-columns: 1fr 1fr;
  }

  .os10-progress {
    grid-row: 1 / 3;
    grid-column: 2;
    border-left: 1px solid rgba(218,145,24,.22);
  }

  .os10-stat {
    justify-content: flex-start;
    padding: 14px;
  }

  .os10-stat:first-child,
  .os10-stat:last-child {
    border: 0;
  }

  .os10-stat:first-child {
    border-bottom: 1px solid rgba(218,145,24,.22);
  }

  .os10-tab-list {
    gap: 7px;
  }

  .os10-tab-button {
    min-height: 66px;
    gap: 8px;
    padding: 10px 11px;
  }

  .os10-tab-button__icon {
    font-size: 23px;
  }

  .os10-tab-button strong {
    font-size: 12px !important;
  }

  .os10-tab-button small {
    font-size: 9px;
  }

  .os10-form-card,
  .os10-status {
    padding: 15px;
  }

  .os10-form-grid {
    grid-template-columns: 1fr;
  }

  .os10-status {
    grid-column: auto;
    display: flex;
  }

  .os10-status__closed {
    margin-top: 0;
  }

  .os10-news-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .os10-contest {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .os10-contest > div:nth-child(3)::after,
  .os10-contest > div:nth-child(6)::after {
    display: block;
  }

  .os10-contest > div:nth-child(even)::after {
    display: none;
  }

  .os10-contest > div:nth-child(-n+4) {
    border-bottom: 1px solid rgba(218,145,24,.24);
  }
}

@media (max-width: 520px) {
  .os10-shell {
    width: min(100% - 22px, 1180px);
  }

  .os10-hero__content {
    padding-top: 34px;
  }

  .os10-script {
    font-size: 28px;
  }

  .os10-hero h1 span {
    font-size: 34px;
  }

  .os10-hero h1 strong {
    font-size: 35px;
  }

  .os10-hero__lead {
    font-size: 15px;
  }

  .os10-date {
    min-height: 43px;
    font-size: 15px;
  }

  .os10-hero__actions {
    flex-direction: column;
  }

  .os10-hero__actions .os10-btn {
    width: 100%;
  }

  .os10-hero__visual img {
    min-height: 210px;
  }

  .os10-section-title h2 {
    font-size: 15px;
  }

  .os10-timeline {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    padding-inline: 8px;
  }

  .os10-timeline__item:nth-child(3)::after {
    display: block;
  }

  .os10-timeline__item:nth-child(even)::after {
    display: none;
  }

  .os10-promo__features {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .os10-register {
    padding: 10px;
  }

  .os10-stats {
    grid-template-columns: 1fr;
  }

  .os10-progress {
    grid-row: auto;
    grid-column: auto;
    border: 0;
    border-top: 1px solid rgba(218,145,24,.22);
    border-bottom: 1px solid rgba(218,145,24,.22);
  }

  .os10-stat {
    justify-content: center;
  }

  .os10-stat:first-child {
    border-bottom: 0;
  }

  .os10-tab-list {
    gap: 6px;
  }

  .os10-tab-button {
    min-height: 54px;
    padding: 9px 7px;
    text-align: center;
  }

  .os10-tab-button__icon {
    display: none;
  }

  .os10-tab-button > span:last-child {
    place-items: center;
  }

  .os10-tab-button strong {
    font-size: 10.5px !important;
    line-height: 1.3 !important;
  }

  .os10-tab-button small {
    display: none;
  }

  .os10-form-intro {
    align-items: flex-start;
  }

  .os10-form-intro > span {
    width: 38px;
    height: 38px;
    font-size: 20px;
  }

  .os10-form-intro h3 {
    font-size: 13px !important;
  }

  .os10-form-intro p {
    font-size: 10px;
  }

  .os10-fields-2 {
    grid-template-columns: 1fr;
  }

  .os10-live-note {
    align-items: flex-start;
    text-align: center;
  }

  .os10-rules {
    padding-right: 14px;
  }

  .os10-rules > div span {
    position: static;
    font-size: 34px;
  }

  .os10-news-grid,
  .os10-contest {
    grid-template-columns: 1fr;
  }

  .os10-news-card h3 {
    min-height: 0;
  }

  .os10-contest > div {
    border-bottom: 1px solid rgba(218,145,24,.24) !important;
  }

  .os10-contest > div::after {
    display: none !important;
  }

  .os10-contest > div:last-child {
    border-bottom: 0 !important;
  }

  .os10-backtop {
    width: 42px;
    height: 42px;
    right: 14px;
    bottom: 14px;
  }
}


/* v288 - Banner 10 năm dùng ảnh bìa toàn chiều rộng */
.os10-hero {
  width: 100%;
  height: clamp(500px, 36.425vw, 700px);
  min-height: 0;
  overflow: hidden;
  background: #00182e;
}

.os10-hero__cover {
  position: absolute;
  inset: 0;
  z-index: -2;
  width: 100%;
  height: 100%;
  max-width: none !important;
  object-fit: cover;
  object-position: center center;
  user-select: none;
  pointer-events: none;
}

.os10-hero::before {
  display: none;
}

.os10-hero::after {
  z-index: -1;
  background: linear-gradient(90deg, rgba(0, 17, 34, .24) 0%, rgba(0, 17, 34, .08) 43%, rgba(0, 17, 34, 0) 66%);
}

.os10-hero__grid {
  width: min(100% - 48px, 1180px);
  height: 100%;
  min-height: 0;
  display: flex;
  align-items: center;
}

.os10-hero__content {
  width: min(53%, 600px);
  padding: 36px 0;
}

@media (max-width: 900px) {
  .os10-hero {
    height: auto;
    min-height: 620px;
  }

  .os10-hero__cover {
    object-position: 66% center;
  }

  .os10-hero::after {
    background: linear-gradient(90deg, rgba(0, 17, 34, .88) 0%, rgba(0, 17, 34, .68) 52%, rgba(0, 17, 34, .2) 100%);
  }

  .os10-hero__grid {
    width: min(100% - 32px, 1180px);
    min-height: 620px;
    display: flex;
    align-items: center;
  }

  .os10-hero__content {
    width: min(100%, 560px);
    padding: 48px 0;
    text-align: left;
  }

  .os10-hero h1,
  .os10-hero__lead {
    margin-left: 0;
    margin-right: 0;
  }

  .os10-date,
  .os10-hero__actions {
    margin-left: 0;
    margin-right: 0;
    justify-content: flex-start;
  }
}

@media (max-width: 520px) {
  .os10-hero {
    min-height: 680px;
  }

  .os10-hero__cover {
    object-position: 69% center;
  }

  .os10-hero::after {
    background: rgba(0, 17, 34, .72);
  }

  .os10-hero__grid {
    width: min(100% - 22px, 1180px);
    min-height: 680px;
  }

  .os10-hero__content {
    width: 100%;
    padding: 42px 0;
    text-align: center;
  }

  .os10-hero h1,
  .os10-hero__lead {
    margin-left: auto;
    margin-right: auto;
  }

  .os10-date,
  .os10-hero__actions {
    margin-left: auto;
    margin-right: auto;
    justify-content: center;
  }
}

/* v293 - Chuẩn hóa cỡ chữ toàn trang và hiển thị 4 bài tin tức */
.os10-timeline p {
  font-size: 15px;
  line-height: 1.5;
}

.os10-promo li {
  font-size: 16px;
  line-height: 1.5;
}

.os10-note {
  font-size: 14px;
  line-height: 1.55;
}

.os10-stat small {
  font-size: 14px;
  line-height: 1.45;
}

.os10-progress span {
  font-size: 8px;
  line-height: 1.15;
  max-width: 44px;
}

.os10-live-note {
  font-size: 14px;
  line-height: 1.5;
}

.os10-tab-button strong {
  font-size: 16px !important;
  line-height: 1.35 !important;
}

.os10-tab-button small {
  font-size: 13px;
  line-height: 1.45;
}

.os10-form-intro h3 {
  font-size: 17px !important;
  line-height: 1.35 !important;
}

.os10-form-intro p {
  font-size: 14px;
  line-height: 1.55;
}

.os10-status h3 {
  font-size: 15px !important;
  line-height: 1.35 !important;
}

.os10-ajax-form label {
  font-size: 14px;
  line-height: 1.45;
}

.os10-ajax-form input,
.os10-ajax-form select,
.os10-ajax-form textarea {
  font-size: 15px;
  line-height: 1.5;
}

.os10-submit {
  font-size: 14px;
}

.os10-form-message {
  font-size: 13px;
  line-height: 1.5;
}

.os10-secure {
  font-size: 13px;
  line-height: 1.55;
}

.os10-status__box p {
  max-width: 185px;
  font-size: 14px;
  line-height: 1.5;
}

.os10-status ol {
  font-size: 13px;
  line-height: 1.8;
}

.os10-status__closed {
  font-size: 14px;
}

.os10-faq-item button {
  min-height: 44px;
  padding: 10px 14px;
  font: 500 14px/1.5 "Roboto", Arial, sans-serif;
}

.os10-faq-answer p {
  padding-inline: 14px;
  font-size: 14px;
  line-height: 1.6;
}

.os10-rules h3 {
  font-size: 18px !important;
  line-height: 1.3;
}

.os10-rules li {
  margin: 8px 0;
  font-size: 15px;
  line-height: 1.65;
}

.os10-news-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.os10-news-card img {
  aspect-ratio: 3 / 2;
}

.os10-news-card > a > div {
  padding: 14px 14px 16px;
}

.os10-news-card h3 {
  min-height: 48px;
  font: 700 16px/1.45 "Roboto", Arial, sans-serif !important;
}

.os10-news-card p {
  margin-bottom: 11px;
  font-size: 12px;
  line-height: 1.45;
}

.os10-news-card strong {
  font-size: 13px;
}

.os10-link-more {
  min-height: 40px;
  padding: 8px 20px;
  font-size: 13px;
}

.os10-contest h3 {
  font-size: 14px !important;
  line-height: 1.4 !important;
}

.os10-contest p,
.os10-contest li,
.os10-contest small {
  font-size: 12px;
  line-height: 1.65;
}

.os10-contest__deadline strong {
  font-size: 15px;
}

.os10-contest__deadline .os10-btn {
  min-height: 40px;
  font-size: 13px;
}

@media (max-width: 900px) {
  .os10-news-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .os10-tab-button strong {
    font-size: 14px !important;
  }

  .os10-tab-button small {
    font-size: 12px;
  }
}

@media (max-width: 520px) {
  .os10-section-title h2 {
    font-size: 17px;
    line-height: 1.4;
  }

  .os10-timeline p,
  .os10-promo li,
  .os10-note,
  .os10-live-note,
  .os10-ajax-form label,
  .os10-status__box p,
  .os10-faq-item button,
  .os10-faq-answer p {
    font-size: 14px;
  }

  .os10-rules li {
    font-size: 15px;
    line-height: 1.6;
  }

  .os10-stat small {
    font-size: 13px;
  }

  .os10-tab-button strong {
    font-size: 12px !important;
  }

  .os10-form-intro h3 {
    font-size: 15px !important;
  }

  .os10-form-intro p,
  .os10-secure,
  .os10-status ol {
    font-size: 12px;
  }

  .os10-ajax-form input,
  .os10-ajax-form select,
  .os10-ajax-form textarea {
    font-size: 16px;
  }

  .os10-news-grid {
    grid-template-columns: 1fr;
  }

  .os10-news-card h3 {
    min-height: 0;
    font-size: 17px !important;
  }

  .os10-news-card p,
  .os10-news-card strong,
  .os10-link-more {
    font-size: 13px;
  }

  .os10-contest p,
  .os10-contest li,
  .os10-contest small {
    font-size: 13px;
  }
}


.os10-page.os10-popup-open {
  overflow: hidden;
}

.os10-news-popup {
  position: fixed;
  inset: 0;
  z-index: 9998;
  display: grid;
  place-items: center;
  padding: 20px;
}

.os10-news-popup[hidden] {
  display: none !important;
}

.os10-news-popup__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(7, 17, 31, .56);
  backdrop-filter: blur(4px);
}

.os10-news-popup__dialog {
  position: relative;
  z-index: 1;
  width: min(100%, 460px);
  padding: 30px 28px 24px;
  border: 1px solid rgba(218,145,24,.3);
  border-radius: 18px;
  background: linear-gradient(180deg, #fffdf8 0%, #fff7e9 100%);
  box-shadow: 0 20px 60px rgba(9, 20, 36, .22);
  text-align: center;
  animation: os10-popup-in .22s ease-out both;
}

@keyframes os10-popup-in {
  from { opacity: 0; transform: translateY(10px) scale(.98); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.os10-news-popup__close {
  position: absolute;
  right: 12px;
  top: 12px;
  width: 34px;
  height: 34px;
  border: 0;
  border-radius: 50%;
  background: #fff;
  color: #8a5d10;
  font-size: 24px;
  line-height: 1;
  cursor: pointer;
  box-shadow: 0 8px 20px rgba(10,20,36,.1);
}

.os10-news-popup__icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 16px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: var(--os10-gold);
  background: #fff;
  box-shadow: 0 10px 24px rgba(218,145,24,.18);
  font-size: 32px;
}

.os10-news-popup__dialog h3 {
  margin: 0 0 8px;
  color: #162941;
  font: 900 28px/1.2 "Roboto", Arial, sans-serif !important;
}

.os10-news-popup__dialog p {
  margin: 0 0 18px;
  color: #4b5667;
  font-size: 17px;
  line-height: 1.6;
}

.os10-news-popup__button {
  min-width: 140px;
}

@media (max-width: 700px) {
  .os10-news-popup__dialog {
    padding: 26px 18px 20px;
  }

  .os10-news-popup__dialog h3 {
    font-size: 24px !important;
  }

  .os10-news-popup__dialog p {
    font-size: 16px;
  }
}


@media (prefers-reduced-motion: reduce) {
  .os10-faq-answer,
  .os10-faq-answer p,
  .os10-faq-item button b,
  .os10-faq-item {
    transition-duration: .01ms !important;
  }
}


.os10-news-empty {
  grid-column: 1 / -1;
  padding: 28px 22px;
  border: 1px dashed rgba(218,145,24,.38);
  border-radius: 12px;
  background: #fffaf1;
  color: #596678;
  text-align: center;
  font-size: 16px;
  line-height: 1.6;
}

/* v326: Giữ tiêu đề "10 NĂM THÀNH LẬP" trên một dòng. */
.os10-hero__content {
  width: min(57%, 680px);
}

.os10-hero h1 {
  max-width: 680px;
}

.os10-hero h1 span {
  white-space: nowrap;
  font-size: clamp(38px, 3.55vw, 58px);
}

@media (max-width: 900px) {
  .os10-hero__content {
    width: min(100%, 620px);
  }

  .os10-hero h1 {
    max-width: 620px;
  }

  .os10-hero h1 span {
    font-size: clamp(34px, 6.3vw, 48px);
  }
}

@media (max-width: 520px) {
  .os10-hero h1 span {
    font-size: clamp(25px, 7.7vw, 31px);
    letter-spacing: -.035em;
  }

  .os10-hero h1 strong {
    font-size: clamp(31px, 10vw, 36px);
  }
}