:root {
  --bg: #070714;
  --bg-soft: #0d0c20;
  --panel: #15132f;
  --panel-2: #1c1941;
  --line: rgba(155, 146, 255, 0.28);
  --line-strong: rgba(164, 155, 255, 0.48);
  --text: #f5f4ff;
  --muted: #aaa6c8;
  --muted-2: #797598;
  --primary: #6757f4;
  --primary-2: #9187ff;
  --cyan: #56d6ff;
  --pink: #ff7ab6;
  --success: #59e0a5;
  --shadow: 0 24px 70px rgba(65, 54, 190, 0.28);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Be Vietnam Pro", Arial, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 20% 12%, rgba(103, 87, 244, 0.22), transparent 30rem),
    radial-gradient(circle at 82% 18%, rgba(86, 214, 255, 0.11), transparent 26rem),
    linear-gradient(180deg, #070713 0%, #080716 44%, #0d0b1d 100%);
}

a {
  color: inherit;
  text-decoration: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: 72px;
  padding: 0 clamp(20px, 7vw, 92px);
  border-bottom: 1px solid rgba(155, 146, 255, 0.18);
  background: rgba(7, 7, 20, 0.78);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 800;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 12px;
  color: white;
  font-size: 13px;
  background: linear-gradient(135deg, var(--primary), #7d70ff);
  box-shadow: 0 0 30px rgba(103, 87, 244, 0.58);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 34px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 600;
}

.nav-links a:hover,
.site-footer a:hover {
  color: var(--text);
}

.header-cta,
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  border-radius: 14px;
  font-weight: 800;
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}

.header-cta {
  min-height: 44px;
  padding: 0 20px;
  border: 1px solid var(--line-strong);
}

.header-cta:hover,
.btn:hover {
  transform: translateY(-2px);
}

.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(420px, 0.92fr);
  align-items: center;
  gap: clamp(34px, 6vw, 86px);
  max-width: 1220px;
  margin: 0 auto;
  padding: clamp(72px, 10vw, 122px) 24px 70px;
}

.hero-copy {
  max-width: 700px;
}

.eyebrow,
.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 22px;
  color: #b9b5ff;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.eyebrow {
  padding: 11px 16px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: rgba(103, 87, 244, 0.08);
}

.eyebrow span {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 18px var(--primary);
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 780px;
  margin-bottom: 22px;
  font-size: clamp(40px, 5.7vw, 66px);
  line-height: 1.16;
  font-weight: 900;
  text-transform: uppercase;
}

h1 span,
.section h2 strong {
  color: var(--primary-2);
}

h1 span {
  display: block;
}

.deposit-callout {
  max-width: 620px;
  margin: 0 0 24px;
  padding: 18px 20px;
  border: 1px solid rgba(89, 224, 165, 0.42);
  border-radius: 18px;
  background:
    linear-gradient(135deg, rgba(89, 224, 165, 0.12), rgba(103, 87, 244, 0.12)),
    rgba(255, 255, 255, 0.035);
  box-shadow: 0 18px 46px rgba(89, 224, 165, 0.1);
}

.deposit-callout span {
  display: inline-flex;
  margin-bottom: 8px;
  color: #ffb6d0;
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
}

.deposit-callout strong {
  display: block;
  margin-bottom: 8px;
  color: var(--success);
  font-size: clamp(24px, 3.1vw, 34px);
  line-height: 1.18;
}

.deposit-callout p {
  margin: 0;
  color: #d9d5f4;
  line-height: 1.65;
}

.hero-lead {
  max-width: 650px;
  color: var(--muted);
  font-size: clamp(17px, 2vw, 20px);
  line-height: 1.7;
}

.hero-actions,
.trust-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
}

.hero-actions {
  margin-top: 34px;
}

.btn {
  min-width: 190px;
  padding: 0 26px;
  border: 1px solid transparent;
}

.btn.primary {
  background: linear-gradient(135deg, var(--primary), #5747df);
  box-shadow: 0 18px 42px rgba(103, 87, 244, 0.35);
}

.btn.secondary {
  border-color: var(--line-strong);
  background: rgba(255, 255, 255, 0.03);
}

.trust-row {
  margin-top: 22px;
  color: var(--muted-2);
  font-size: 13px;
}

.trust-row span {
  position: relative;
  padding-left: 18px;
}

.trust-row span::before {
  position: absolute;
  left: 0;
  top: 8px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--success);
  content: "";
}

.hero-visual {
  overflow: hidden;
  min-height: 520px;
  border: 1px solid var(--line-strong);
  border-radius: 24px;
  background: linear-gradient(145deg, rgba(31, 28, 70, 0.96), rgba(11, 10, 28, 0.96));
  box-shadow: var(--shadow);
}

.browser-bar {
  display: grid;
  grid-template-columns: 10px 10px 10px 1fr;
  align-items: center;
  gap: 9px;
  min-height: 58px;
  padding: 0 20px;
  border-bottom: 1px solid var(--line);
  color: var(--muted-2);
  font-size: 12px;
}

.browser-bar span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
}

.browser-bar strong {
  justify-self: center;
  width: min(100%, 320px);
  padding: 10px 16px;
  border-radius: 9px;
  background: rgba(255, 255, 255, 0.04);
  font-weight: 600;
  text-align: center;
}

.webinar-card {
  display: grid;
  grid-template-columns: 1.35fr 0.9fr;
  min-height: 462px;
}

.live-area {
  position: relative;
  display: grid;
  place-items: center;
  overflow: hidden;
  background:
    radial-gradient(circle at 52% 45%, rgba(145, 135, 255, 0.28), transparent 10rem),
    linear-gradient(145deg, #1d1a48, #28236a);
}

.live-badge,
.session-title {
  position: absolute;
  left: 24px;
  font-size: 13px;
  font-weight: 900;
}

.live-badge {
  top: 22px;
  color: #ff9dbf;
}

.session-title {
  right: 24px;
  bottom: 24px;
  color: #dedbff;
}

.play-button {
  width: 86px;
  height: 86px;
  border: 2px solid rgba(255, 255, 255, 0.16);
  border-radius: 50%;
  color: #dedaff;
  background: rgba(255, 255, 255, 0.08);
  cursor: pointer;
  box-shadow: inset 0 0 28px rgba(255, 255, 255, 0.05);
}

.chat-panel {
  padding: 26px 22px;
  border-left: 1px solid var(--line);
  background: rgba(10, 9, 26, 0.55);
}

.chat-panel h2 {
  margin-bottom: 18px;
  font-size: 16px;
  color: #c7c3ee;
}

.chat-bubble {
  margin-bottom: 14px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 12px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
  background: rgba(255, 255, 255, 0.035);
}

.chat-bubble b {
  display: block;
  margin-bottom: 4px;
  color: #e7e4ff;
}

.chat-bubble.accent {
  border-color: rgba(86, 214, 255, 0.34);
  background: rgba(86, 214, 255, 0.08);
}

.metrics,
.community-showcase,
.video-section,
.section,
.register-section {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
}

.metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  padding-bottom: 56px;
}

.metrics div,
.benefit-grid article,
.timeline article,
.community-card,
.software-panel,
.signup-form {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.035);
}

.metrics div {
  padding: 24px;
  border-radius: 18px;
}

.metrics strong {
  display: block;
  margin-bottom: 8px;
  font-size: 28px;
  color: #eeeaff;
}

.metrics span,
.section p,
.community-showcase p,
.video-section p,
.timeline p,
.software-panel li,
.form-note {
  color: var(--muted);
  line-height: 1.7;
}

.community-showcase {
  display: grid;
  grid-template-columns: 0.82fr 1.18fr;
  gap: 28px;
  align-items: center;
  padding-bottom: 92px;
}

.showcase-copy h2 {
  margin-bottom: 16px;
  font-size: clamp(30px, 3.8vw, 48px);
  line-height: 1.12;
}

.community-image-card {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.035);
  box-shadow: var(--shadow);
}

.community-image-card img {
  display: block;
  width: 100%;
  height: auto;
}

.community-image-card figcaption {
  padding: 14px 18px 16px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
  line-height: 1.55;
  background: rgba(8, 7, 21, 0.72);
}

.video-section {
  display: grid;
  grid-template-columns: 0.72fr 1fr;
  gap: 28px;
  align-items: center;
  padding-bottom: 92px;
}

.video-copy h2 {
  margin-bottom: 16px;
  font-size: clamp(30px, 3.8vw, 48px);
  line-height: 1.12;
}

.video-frame {
  position: relative;
  overflow: hidden;
  width: 100%;
  border: 1px solid var(--line-strong);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.035);
  box-shadow: var(--shadow);
  aspect-ratio: 16 / 9;
}

.video-frame iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.section {
  padding-top: 86px;
  padding-bottom: 86px;
}

.split {
  display: grid;
  grid-template-columns: 0.82fr 1.18fr;
  gap: 48px;
  align-items: start;
}

.section h2,
.register-copy h2 {
  margin-bottom: 18px;
  font-size: clamp(32px, 4vw, 54px);
  line-height: 1.05;
}

.section-copy {
  position: sticky;
  top: 104px;
}

.benefit-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.benefit-grid article,
.timeline article {
  padding: 26px;
  border-radius: 20px;
}

.benefit-grid span,
.timeline span {
  display: inline-flex;
  margin-bottom: 18px;
  color: var(--primary-2);
  font-size: 13px;
  font-weight: 900;
}

.benefit-grid h3,
.timeline h3 {
  margin-bottom: 10px;
  font-size: 20px;
}

.section-heading {
  max-width: 740px;
  margin-bottom: 30px;
}

.timeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.challenge {
  border-top: 1px solid rgba(155, 146, 255, 0.14);
  border-bottom: 1px solid rgba(155, 146, 255, 0.14);
}

.community {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 420px;
  gap: 18px;
}

.community-card,
.software-panel,
.feedback-video-card {
  border-radius: 24px;
  padding: clamp(26px, 4vw, 42px);
}

.community-card {
  background:
    linear-gradient(135deg, rgba(103, 87, 244, 0.18), rgba(255, 122, 182, 0.08)),
    rgba(255, 255, 255, 0.035);
}

.community-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.community-tags span {
  padding: 10px 13px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: #dcd8ff;
  background: rgba(255, 255, 255, 0.045);
  font-size: 13px;
  font-weight: 700;
}

.software-panel {
  background: linear-gradient(180deg, rgba(86, 214, 255, 0.1), rgba(103, 87, 244, 0.08));
}

.feedback-video-card {
  grid-column: 1 / -1;
  display: block;
  max-width: 940px;
  margin: 12px auto 0;
  border: 1px solid var(--line-strong);
  padding: clamp(22px, 4vw, 34px);
  background:
    linear-gradient(135deg, rgba(103, 87, 244, 0.2), rgba(86, 214, 255, 0.08)),
    rgba(255, 255, 255, 0.035);
  box-shadow: var(--shadow);
}

.feedback-copy {
  max-width: 720px;
  margin: 0 auto 22px;
  text-align: center;
}

.feedback-copy h2 {
  max-width: 680px;
  margin: 0 auto 12px;
  font-size: clamp(26px, 3vw, 38px);
  line-height: 1.16;
}

.feedback-copy p:last-child {
  margin: 0;
}

.feedback-frame {
  max-width: 820px;
  margin: 0 auto;
  border-radius: 20px;
  box-shadow: none;
}

.panel-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 24px;
}

.panel-top span {
  color: var(--muted);
  font-weight: 700;
}

.panel-top strong {
  color: var(--success);
  font-size: 22px;
}

.software-panel ul {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.software-panel li {
  position: relative;
  padding-left: 25px;
}

.software-panel li::before {
  position: absolute;
  left: 0;
  color: var(--cyan);
  content: "???";
}

.register-section {
  display: grid;
  grid-template-columns: 0.85fr 1fr;
  gap: 42px;
  align-items: center;
  padding-top: 92px;
  padding-bottom: 96px;
}

.register-copy p {
  color: var(--muted);
  line-height: 1.7;
}

.signup-form {
  display: grid;
  gap: 16px;
  padding: clamp(22px, 4vw, 34px);
  border-radius: 24px;
  box-shadow: var(--shadow);
}

label {
  display: grid;
  gap: 9px;
  color: #ddd9ff;
  font-size: 14px;
  font-weight: 800;
}

input,
select {
  width: 100%;
  min-height: 52px;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 0 15px;
  color: var(--text);
  background: rgba(8, 7, 21, 0.78);
  font: inherit;
  outline: none;
}

input:focus,
select:focus {
  border-color: var(--primary-2);
  box-shadow: 0 0 0 4px rgba(103, 87, 244, 0.18);
}

select option {
  background: #111026;
}

.form-submit {
  width: 100%;
  margin-top: 6px;
  cursor: pointer;
}

.form-submit:disabled {
  cursor: not-allowed;
  opacity: 0.65;
}

.hp-field {
  position: absolute;
  left: -10000px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.form-note a:hover {
  color: var(--text);
}
.form-note {
  margin: 0;
  font-size: 13px;
}

.form-note.is-success {
  color: var(--success);
}

.form-note.is-error {
  color: #ff9b9b;
}

.form-note a {
  color: var(--text);
  font-weight: 900;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.payment-hero,
.payment-steps {
  max-width: 1160px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

.payment-hero {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(340px, 0.72fr);
  gap: clamp(28px, 5vw, 64px);
  align-items: center;
  padding-top: clamp(62px, 9vw, 112px);
  padding-bottom: 68px;
}

.payment-copy h1 {
  max-width: 720px;
}

.payment-details {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  max-width: 760px;
  margin-top: 24px;
}

.payment-details div,
.payment-steps article {
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.035);
}

.payment-details div {
  padding: 18px;
}

.payment-details span {
  display: block;
  margin-bottom: 8px;
  color: var(--muted-2);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

.payment-details strong {
  display: block;
  color: var(--text);
  font-size: 17px;
  line-height: 1.3;
}

.qr-card {
  border: 1px solid var(--line-strong);
  border-radius: 26px;
  padding: 18px;
  background:
    linear-gradient(180deg, rgba(103, 87, 244, 0.14), rgba(86, 214, 255, 0.06)),
    rgba(255, 255, 255, 0.045);
  box-shadow: var(--shadow);
}

.qr-frame {
  overflow: hidden;
  border-radius: 20px;
  background: #fffdf8;
  max-width: 430px;
  margin: 0 auto;
}

.qr-frame img {
  display: block;
  width: 100%;
  height: auto;
}

.transfer-note {
  padding: 20px 4px 4px;
}

.transfer-note h2 {
  margin-bottom: 10px;
  font-size: 22px;
}

.transfer-note p {
  color: var(--muted);
  line-height: 1.7;
}

.transfer-note strong {
  color: var(--success);
  font-size: 17px;
}

.zalo-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: 52px;
  margin-top: 8px;
  border-radius: 14px;
  color: white;
  font-weight: 900;
  background: linear-gradient(135deg, #1476ff, #04a9ff);
  box-shadow: 0 18px 38px rgba(20, 118, 255, 0.25);
  transition: transform 180ms ease, filter 180ms ease;
}

.zalo-button:hover {
  transform: translateY(-2px);
  filter: brightness(1.08);
}

.payment-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  padding-bottom: 94px;
}

.payment-steps article {
  padding: 24px;
}

.payment-steps span {
  display: inline-flex;
  margin-bottom: 16px;
  color: var(--primary-2);
  font-size: 13px;
  font-weight: 900;
}

.payment-steps h3 {
  margin-bottom: 10px;
  font-size: 20px;
}

.payment-steps p {
  margin-bottom: 0;
  color: var(--muted);
  line-height: 1.7;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 28px clamp(20px, 7vw, 92px);
  border-top: 1px solid rgba(155, 146, 255, 0.18);
  color: var(--muted);
  background: rgba(4, 4, 12, 0.5);
}

.site-footer span {
  color: var(--text);
  font-weight: 900;
}

@media (max-width: 980px) {
  .site-header {
    height: auto;
    min-height: 68px;
    padding: 14px 20px;
  }

  .nav-links {
    display: none;
  }

  .hero,
  .split,
  .community-showcase,
  .video-section,
  .community,
  .feedback-video-card,
  .register-section,
  .payment-hero {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 58px;
  }

  .hero-visual {
    min-height: auto;
  }

  .section-copy {
    position: static;
  }

  .timeline {
    grid-template-columns: repeat(2, 1fr);
  }

  .payment-details,
  .payment-steps {
    grid-template-columns: 1fr;
  }

}

@media (max-width: 680px) {
  .header-cta {
    display: none;
  }

  .site-header {
    justify-content: center;
  }

  .hero {
    padding-left: 18px;
    padding-right: 18px;
  }

  .eyebrow {
    align-items: flex-start;
    border-radius: 16px;
    line-height: 1.45;
  }

  h1 {
    font-size: 34px;
    line-height: 1.2;
  }

  .btn {
    width: 100%;
  }

  .webinar-card,
  .metrics,
  .benefit-grid,
  .timeline {
    grid-template-columns: 1fr;
  }

  .live-area {
    min-height: 300px;
  }

  .chat-panel {
    border-left: 0;
    border-top: 1px solid var(--line);
  }

  .metrics,
  .community-showcase,
  .video-section,
  .section,
  .register-section,
  .payment-hero,
  .payment-steps {
    padding-left: 18px;
    padding-right: 18px;
  }

  .site-footer {
    flex-direction: column;
    align-items: flex-start;
  }
}