:root {
  --ink: #1A1712;
  --muted: #635D51;
  --line: #E4DECF;
  --paper: #F6F3EC;
  --soft: #ECE6D9;
  --green: #CB3F1E;
  --green-dark: #A33119;
  --coral: #CB3F1E;
  --gold: #C8923A;
  --white: #ffffff;
  --shadow: 0 18px 50px rgba(26, 23, 18, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Be Vietnam Pro", Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

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

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

h1,
h2,
h3,
p,
th,
td {
  overflow-wrap: anywhere;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 72px;
  padding: 12px clamp(18px, 4vw, 56px);
  background: rgba(246, 243, 236, 0.94);
  border-bottom: 1px solid rgba(228, 222, 205, 0.9);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.brand-logo {
  width: 56px;
  height: 44px;
  object-fit: contain;
  object-position: center;
  background: transparent;
  border: 0;
}

.brand strong,
.brand small {
  display: block;
  line-height: 1.1;
}

.brand strong {
  font-size: 18px;
}

.brand small {
  margin-top: 3px;
  color: var(--muted);
  font-size: 11px;
  text-transform: uppercase;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 3px;
}

.site-nav a {
  padding: 10px 10px;
  color: #3A352B;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 760;
  white-space: nowrap;
}

.site-nav a:hover {
  background: var(--soft);
  color: var(--green-dark);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 4px auto;
  background: var(--ink);
}

.hero {
  position: relative;
  display: grid;
  align-items: center;
  min-height: calc(100svh - 72px);
  overflow: hidden;
  isolation: isolate;
}

.hero-image,
.hero-overlay {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-image {
  object-fit: cover;
  z-index: -2;
}

.hero-overlay {
  z-index: -1;
  background:
    linear-gradient(90deg, rgba(246, 243, 236, 0.96) 0%, rgba(246, 243, 236, 0.84) 34%, rgba(246, 243, 236, 0.18) 72%),
    linear-gradient(0deg, rgba(26, 23, 18, 0.2), rgba(26, 23, 18, 0.02));
}

.hero-content {
  width: min(650px, calc(100% - 36px));
  margin-left: clamp(18px, 7vw, 96px);
  padding-block: 72px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--coral);
  font-size: 13px;
  font-weight: 900;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(62px, 14vw, 132px);
  line-height: 0.92;
  font-weight: 800;
}

h2 {
  margin: 0;
  font-size: clamp(30px, 4.2vw, 54px);
  line-height: 1.04;
  font-weight: 900;
}

h3 {
  margin: 0 0 10px;
  font-size: 20px;
  line-height: 1.2;
}

.hero-copy {
  max-width: 600px;
  margin: 28px 0 0;
  color: #3A352B;
  font-size: clamp(17px, 2vw, 21px);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 13px 18px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-weight: 850;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button.primary {
  color: var(--white);
  background: var(--green);
  box-shadow: 0 10px 24px rgba(218, 74, 42, 0.22);
}

.button.primary:hover {
  background: var(--ink);
}

.button.secondary {
  color: var(--green-dark);
  background: rgba(255, 255, 255, 0.8);
  border-color: var(--line);
}

.button.full {
  width: 100%;
}

.quick-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border-block: 1px solid var(--line);
}

.quick-stats div {
  padding: 28px clamp(18px, 4vw, 56px);
  background: var(--white);
}

.quick-stats strong {
  display: block;
  color: var(--green);
  font-size: 34px;
  line-height: 1;
}

.quick-stats span {
  display: block;
  margin-top: 8px;
  color: var(--muted);
  font-weight: 700;
}

.quote-strip {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 1.1fr);
  gap: clamp(22px, 4vw, 56px);
  align-items: center;
  padding: clamp(34px, 5vw, 58px) clamp(18px, 4vw, 56px);
  color: var(--white);
  background: #1A1712;
}

.quote-strip h2 {
  max-width: 780px;
  font-size: clamp(26px, 3vw, 42px);
}

.quote-strip .eyebrow {
  color: var(--gold);
}

.quote-checklist {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 10px;
  padding: 0;
  margin: 0;
  list-style: none;
  counter-reset: quote;
}

.quote-checklist li {
  min-height: 116px;
  padding: 14px;
  color: rgba(255, 255, 255, 0.84);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
  font-weight: 760;
}

.quote-checklist li::before {
  counter-increment: quote;
  content: counter(quote, decimal-leading-zero);
  display: block;
  margin-bottom: 16px;
  color: var(--gold);
  font-weight: 950;
}

.section {
  padding: clamp(64px, 9vw, 112px) clamp(18px, 4vw, 56px);
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  gap: clamp(32px, 7vw, 88px);
  align-items: start;
}

.text-stack {
  color: #46413A;
  font-size: 18px;
}

.text-stack p {
  margin: 0;
}

.text-stack p + p {
  margin-top: 18px;
}

.muted,
.process {
  background: var(--soft);
}

.section-heading {
  max-width: 760px;
  margin-bottom: 34px;
}

.section-heading.wide {
  max-width: 940px;
}

.section-heading p:not(.eyebrow) {
  color: var(--muted);
  font-size: 17px;
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 14px;
  padding: 0;
  margin: 0;
  list-style: none;
  counter-reset: steps;
}

.process-steps li {
  position: relative;
  min-height: 190px;
  padding: 22px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.process-steps li::before {
  counter-increment: steps;
  content: counter(steps, decimal-leading-zero);
  display: block;
  margin-bottom: 24px;
  color: var(--coral);
  font-weight: 950;
}

.process-steps strong,
.process-steps span {
  display: block;
}

.process-steps span {
  margin-top: 8px;
  color: var(--muted);
}

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

.catalog-card {
  display: flex;
  flex-direction: column;
  min-height: 100%;
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(26, 23, 18, 0.05);
}

.catalog-card.featured {
  grid-column: span 2;
}

.catalog-card img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  object-position: top center;
  background: #EFEBE0;
  border-bottom: 1px solid var(--line);
}

.catalog-card > div {
  display: flex;
  flex: 1;
  flex-direction: column;
  padding: 20px;
}

.catalog-card p {
  margin: 0;
  color: var(--muted);
}

.tag {
  color: var(--coral) !important;
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
}

.price {
  display: block;
  margin-top: auto;
  padding-top: 18px;
  color: var(--green);
  font-size: 18px;
}

.price-list {
  display: grid;
  gap: 8px;
  padding: 18px 0 0;
  margin: auto 0 0;
  list-style: none;
}

.price-list li {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 9px 0;
  border-top: 1px solid var(--line);
}

.price-list span {
  color: var(--muted);
}

.price-list strong {
  color: var(--green);
}

.service-showcase {
  display: grid;
  gap: 22px;
}

.service-panel {
  display: grid;
  grid-template-columns: minmax(280px, 0.7fr) minmax(0, 1fr);
  gap: clamp(22px, 4vw, 48px);
  align-items: center;
  padding: 24px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(26, 23, 18, 0.05);
}

.service-panel img,
.catalog-page img,
.source-gallery img,
.catalog-cta img {
  width: 100%;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.service-panel img {
  max-height: 520px;
  object-fit: contain;
}

.service-panel p {
  color: var(--muted);
  font-size: 17px;
}

.chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-top: 22px;
}

.chip-list span,
.package-grid span {
  border-radius: 8px;
}

.chip-list span {
  padding: 9px 11px;
  background: var(--soft);
  color: var(--green-dark);
  font-weight: 800;
}

.package-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 22px;
}

.package-grid span {
  min-height: 120px;
  padding: 16px;
  background: var(--soft);
  color: var(--muted);
}

.package-grid strong {
  display: block;
  margin-bottom: 8px;
  color: var(--ink);
}

.pricing-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) minmax(260px, 0.78fr);
  gap: 18px;
  align-items: start;
}

.table-card {
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(26, 23, 18, 0.05);
}

.table-card h3 {
  margin: 0;
  padding: 18px 18px 0;
}

.table-scroll {
  width: 100%;
  overflow-x: auto;
  padding: 18px;
}

table {
  width: 100%;
  min-width: 430px;
  border-collapse: collapse;
  font-size: 14px;
}

table + table {
  margin-top: 18px;
}

th,
td {
  padding: 10px 12px;
  text-align: left;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

thead th {
  color: var(--white);
  background: #1A1712;
}

tbody tr:nth-child(even) {
  background: #F0EBDF;
}

tbody th {
  font-weight: 820;
}

td {
  color: #3A352B;
}

.catalog-page {
  margin: 0;
}

.catalog-page figcaption,
.source-gallery figcaption {
  margin-top: 9px;
  color: var(--muted);
  font-size: 13px;
}

.note {
  margin: 22px 0 0;
  color: var(--muted);
  font-size: 15px;
  font-style: italic;
}

.size-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.size-card table {
  min-width: 520px;
}

.source-gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 32px;
}

.source-gallery figure {
  margin: 0;
}

.source-gallery img {
  aspect-ratio: 3 / 4;
  object-fit: cover;
  object-position: top center;
}

.catalog-cta {
  display: grid;
  grid-template-columns: minmax(260px, 0.62fr) minmax(0, 1fr);
  gap: clamp(26px, 5vw, 64px);
  align-items: center;
  padding: clamp(64px, 9vw, 112px) clamp(18px, 4vw, 56px);
  background: #1A1712;
  color: var(--white);
}

.catalog-cta img {
  max-height: 650px;
  object-fit: contain;
  border-color: rgba(255, 255, 255, 0.18);
}

.catalog-cta p:not(.eyebrow) {
  max-width: 640px;
  color: rgba(255, 255, 255, 0.76);
  font-size: 18px;
}

.catalog-cta .eyebrow {
  color: var(--gold);
}

.contact-section {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 520px);
  gap: clamp(28px, 6vw, 76px);
  padding: clamp(64px, 9vw, 112px) clamp(18px, 4vw, 56px);
  color: var(--white);
  background: var(--ink);
}

.contact-copy p {
  max-width: 610px;
  color: rgba(255, 255, 255, 0.78);
  font-size: 18px;
}

.contact-copy .eyebrow {
  color: var(--gold);
}

.contact-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.contact-links a {
  padding: 10px 13px;
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.32);
  border-radius: 8px;
  font-weight: 850;
}

.contact-form {
  padding: 24px;
  color: var(--ink);
  background: var(--white);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.contact-form label {
  display: block;
  margin-bottom: 16px;
  font-size: 14px;
  font-weight: 850;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  display: block;
  width: 100%;
  margin-top: 7px;
  padding: 13px 12px;
  color: var(--ink);
  background: #FBF9F3;
  border: 1px solid var(--line);
  border-radius: 8px;
  font: inherit;
}

.contact-form textarea {
  resize: vertical;
}

.form-note {
  min-height: 24px;
  margin: 12px 0 0;
  color: var(--green);
  font-size: 14px;
  font-weight: 800;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 26px clamp(18px, 4vw, 56px);
  background: #1A1712;
  color: var(--white);
}

.site-footer span {
  display: block;
  color: rgba(255, 255, 255, 0.62);
  font-size: 14px;
}

.site-footer a {
  color: rgba(255, 255, 255, 0.82);
  font-weight: 800;
}

.nav-cta {
  color: var(--white) !important;
  background: var(--green);
}

.conversion-hero h1 {
  max-width: 820px;
  font-size: clamp(40px, 5.4vw, 70px);
  line-height: 1.07;
  letter-spacing: -0.01em;
  font-weight: 800;
}

.conversion-hero .hero-content {
  width: min(860px, calc(100% - 36px));
}

.hero-proof {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  max-width: 780px;
  margin-top: 26px;
}

.hero-proof span {
  padding: 13px 14px;
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid rgba(228, 222, 205, 0.9);
  border-radius: 8px;
  color: #3A352B;
  font-weight: 740;
}

.hero-proof strong {
  display: block;
  color: var(--green-dark);
  font-size: 18px;
}

.trust-strip strong {
  color: var(--ink);
  font-size: 24px;
}

.benefit-stack {
  display: grid;
  gap: 12px;
}

.benefit-stack article,
.faq-grid article {
  padding: 20px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(26, 23, 18, 0.05);
}

.benefit-stack strong,
.benefit-stack span {
  display: block;
}

.benefit-stack strong {
  font-size: 18px;
}

.benefit-stack span,
.faq-grid p {
  margin-top: 8px;
  color: var(--muted);
}

.proof-grid,
.solution-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.proof-grid article,
.solution-grid article {
  min-height: 100%;
  padding: 22px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(26, 23, 18, 0.05);
}

.proof-grid span {
  display: inline-flex;
  margin-bottom: 22px;
  color: var(--coral);
  font-weight: 950;
}

.proof-grid p,
.solution-grid p {
  margin: 0;
  color: var(--muted);
}

.seo-cluster {
  background: var(--paper);
}

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

.solution-grid article {
  padding: 28px;
}

.solution-grid h3 {
  font-size: 24px;
}

.comparison {
  background: var(--soft);
}

.comparison-table {
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(26, 23, 18, 0.05);
}

.comparison-table > div {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-bottom: 1px solid var(--line);
}

.comparison-table > div:last-child {
  border-bottom: 0;
}

.comparison-table span {
  display: block;
  padding: 18px;
  color: #3A352B;
}

.comparison-table span + span {
  border-left: 1px solid var(--line);
}

.comparison-head span {
  color: var(--white);
  background: #1A1712;
  font-weight: 900;
}

.text-link {
  display: inline-flex;
  width: fit-content;
  margin-top: 18px;
  color: var(--green-dark);
  font-weight: 900;
  border-bottom: 2px solid var(--green);
}

.faq-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.faq-grid h3 {
  font-size: 18px;
}

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

.sticky-cta {
  position: fixed;
  right: clamp(14px, 3vw, 28px);
  bottom: 18px;
  z-index: 30;
  display: flex;
  gap: 10px;
  padding: 8px;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}

.sticky-cta a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 14px;
  border-radius: 8px;
  font-weight: 900;
}

.sticky-cta a:first-child {
  color: var(--white);
  background: var(--green);
}

.sticky-cta a:last-child {
  color: var(--green-dark);
  background: var(--soft);
}

@media (max-width: 1160px) {
  .catalog-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .pricing-layout .catalog-page {
    grid-column: span 2;
  }

  .process-steps {
    grid-template-columns: repeat(3, 1fr);
  }

  .quote-strip,
  .quote-checklist,
  .proof-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 980px) {
  .site-header {
    gap: 12px;
  }

  .catalog-grid,
  .source-gallery {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .catalog-card.featured {
    grid-column: span 2;
  }

  .service-panel,
  .split,
  .contact-section,
  .catalog-cta,
  .quote-strip {
    grid-template-columns: 1fr;
  }

  .package-grid,
  .size-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 820px) {
  .site-header {
    min-height: 66px;
  }

  .nav-toggle {
    display: block;
  }

  .site-nav {
    position: absolute;
    top: calc(100% + 1px);
    right: 14px;
    left: 14px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 10px;
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: 8px;
    box-shadow: var(--shadow);
  }

  .site-nav.open {
    display: flex;
  }

  .site-nav a {
    padding: 13px 14px;
  }

  .hero {
    min-height: 760px;
  }

  .hero-overlay {
    background:
      linear-gradient(180deg, rgba(246, 243, 236, 0.96) 0%, rgba(246, 243, 236, 0.88) 48%, rgba(246, 243, 236, 0.28) 100%);
  }

  .hero-content {
    align-self: start;
    margin: 0 auto;
    padding-top: 56px;
  }

  .quick-stats,
  .catalog-grid,
  .process-steps,
  .pricing-layout,
  .source-gallery,
  .hero-proof,
  .faq-grid,
  .quote-checklist,
  .proof-grid,
  .solution-grid {
    grid-template-columns: 1fr;
  }

  .catalog-card.featured,
  .pricing-layout .catalog-page {
    grid-column: auto;
  }

  .quick-stats div {
    padding-block: 22px;
  }

  .service-panel {
    padding: 18px;
  }

  .contact-section {
    grid-template-columns: minmax(0, 1fr);
  }

  .contact-form {
    padding: 18px;
  }

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

  .comparison-table {
    background: transparent;
    border: 0;
    box-shadow: none;
  }

  .comparison-table > div {
    grid-template-columns: 1fr;
    gap: 0;
    margin-bottom: 12px;
    overflow: hidden;
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: 8px;
  }

  .comparison-table span + span {
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .sticky-cta {
    right: 10px;
    bottom: 10px;
    left: 10px;
    justify-content: stretch;
  }

  .sticky-cta a {
    flex: 1;
  }
}

@media (max-width: 520px) {
  .brand-logo {
    width: 48px;
    height: 38px;
  }

  .brand small {
    display: none;
  }

  .hero-actions,
  .hero-actions .button {
    width: 100%;
  }

  .conversion-hero h1 {
    font-size: clamp(36px, 11vw, 48px);
  }

  .form-row {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .table-scroll {
    padding: 14px;
  }

  table {
    font-size: 13px;
  }

  th,
  td {
    padding: 9px 10px;
  }
}

/* Feedback khách hàng (dùng cùng .proof-grid) */
#feedback blockquote {
  margin: 0 0 14px;
  font-size: 1.02rem;
  line-height: 1.55;
  color: var(--ink);
  font-style: italic;
}
#feedback blockquote::before { content: "\201C"; }
#feedback blockquote::after { content: "\201D"; }
#feedback article h3 { margin: 0 0 4px; color: var(--green-dark); }
#feedback article p { margin: 0; color: var(--muted); font-size: 0.92rem; }

/* Bảng so sánh 3 cột (HYPO nổi bật cột cuối) */
.compare3 .table-scroll { padding: 0; }
.compare3 table { min-width: 680px; }
.compare3 thead th:last-child { background: var(--green); }
.compare3 tbody th { background: var(--white); }
.compare3 tbody td:last-child {
  background: rgba(218, 74, 42, 0.09);
  color: var(--green-dark);
  font-weight: 820;
}

/* Box xử lý phản đối giá */
.callout {
  margin-top: 28px;
  padding: clamp(20px, 3vw, 32px);
  background: var(--white);
  border: 1px solid var(--line);
  border-left: 4px solid var(--green);
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(26, 23, 18, 0.05);
}
.callout h3 { margin: 0; color: var(--green-dark); font-size: 22px; }
.callout p { margin: 12px 0 0; color: #3A352B; }
.callout ul { margin: 14px 0 0; padding-left: 20px; color: #3A352B; }
.callout li { margin-bottom: 8px; }

/* Fineprint dưới nút form */
.form-fineprint {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 12.5px;
}

/* Ảnh founder */
.founder-photo { margin: 0; }
.founder-photo img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  background: var(--soft);
  border: 1px solid var(--line);
  border-radius: 12px;
}
.founder-section .text-stack { margin-top: 18px; }

/* Dải logo khách (feedback) */
.logo-strip {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 12px;
  margin-bottom: 28px;
}
.logo-strip span {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 74px;
  background: var(--white);
  border: 1px dashed var(--line);
  border-radius: 8px;
  color: var(--muted);
  font-weight: 800;
  font-size: 13px;
}
#feedback blockquote { font-style: normal; }
@media (max-width: 980px) { .logo-strip { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 520px) { .logo-strip { grid-template-columns: repeat(2, 1fr); } }


/* Typography polish */
body { -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }
h1, h2 { letter-spacing: -0.006em; }
.eyebrow { letter-spacing: 0.14em; }

/* ===== Trang phụ / bài viết (multi-page) ===== */
.page-hero { padding: clamp(56px,9vw,104px) clamp(18px,4vw,56px) clamp(34px,5vw,60px); background: var(--soft); }
.page-hero .eyebrow { color: var(--green); }
.page-hero h1 { font-size: clamp(32px,4.6vw,52px); line-height: 1.08; max-width: 900px; letter-spacing: -0.006em; font-weight: 800; }
.page-hero .lead { margin-top: 18px; max-width: 780px; color: #46413A; font-size: clamp(17px,2vw,21px); }
.breadcrumb { padding: 13px clamp(18px,4vw,56px); font-size: 13px; color: var(--muted); background: var(--paper); border-bottom: 1px solid var(--line); }
.breadcrumb a { color: var(--green-dark); font-weight: 700; }
.breadcrumb i { margin: 0 8px; color: var(--line); font-style: normal; }
.prose { max-width: 800px; margin: 0 auto; font-size: 17px; color: #2c2820; }
.prose h2 { font-size: clamp(26px,3.4vw,38px); margin: 44px 0 14px; letter-spacing: -0.015em; }
.prose h3 { font-size: 21px; margin: 30px 0 10px; }
.prose p { margin: 0 0 16px; }
.prose ul, .prose ol { margin: 0 0 18px; padding-left: 22px; }
.prose li { margin-bottom: 9px; }
.prose blockquote { margin: 24px 0; padding: 16px 20px; border-left: 4px solid var(--green); background: var(--soft); border-radius: 0 8px 8px 0; font-style: italic; }
.prose a { color: var(--green-dark); font-weight: 700; text-decoration: underline; }
.prose .answer-box { padding: 20px 22px; background: var(--soft); border: 1px solid var(--line); border-left: 4px solid var(--green); border-radius: 0 8px 8px 0; font-size: 17px; margin: 0 0 28px; }
.prose .answer-box strong { color: var(--green-dark); }
.cta-band { padding: clamp(52px,7vw,84px) clamp(18px,4vw,56px); background: var(--ink); color: #fff; text-align: center; }
.cta-band h2 { max-width: 760px; margin: 0 auto 14px; color: #fff; }
.cta-band p { max-width: 640px; margin: 0 auto 24px; color: rgba(255,255,255,0.78); font-size: 18px; }
.cta-band .button.secondary { background: rgba(255,255,255,0.1); color: #fff; border-color: rgba(255,255,255,0.32); }
.footer-links { display: flex; flex-wrap: wrap; gap: 8px 18px; margin-top: 10px; }
.footer-links a { color: rgba(255,255,255,0.7); font-weight: 600; font-size: 14px; }
.footer-links a:hover { color: #fff; }
.product-layout { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1fr); gap: clamp(24px,4vw,48px); align-items: start; }
.product-layout img { width: 100%; border-radius: 12px; border: 1px solid var(--line); }
@media (max-width: 820px) { .product-layout { grid-template-columns: 1fr; } }
.blog-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 18px; }
.blog-card { display: block; padding: 22px; background: var(--white); border: 1px solid var(--line); border-radius: 12px; box-shadow: 0 8px 24px rgba(26,23,18,0.05); }
.blog-card:hover { border-color: var(--green); }
.blog-card span { display: inline-block; margin-bottom: 10px; color: var(--green); font-size: 12px; font-weight: 800; text-transform: uppercase; letter-spacing: .12em; }
.blog-card h3 { margin: 0 0 8px; }
.blog-card p { margin: 0; color: var(--muted); font-size: 15px; }
@media (max-width: 980px) { .blog-grid { grid-template-columns: repeat(2,1fr); } }
@media (max-width: 640px) { .blog-grid { grid-template-columns: 1fr; } }