:root {
  --navy: #08284d;
  --navy-deep: #051b35;
  --blue: #176eaf;
  --blue-2: #1c88c7;
  --cyan: #2bb7d4;
  --ink: #11243a;
  --muted: #66758a;
  --line: #dce5f1;
  --soft: #f4f7fb;
  --soft-blue: #e7f2ff;
  --white: #ffffff;
  --shadow: 0 24px 70px rgba(8, 40, 77, .14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

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

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

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

.topbar {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: clamp(14px, 3vw, 34px);
  padding: 9px clamp(18px, 4vw, 72px);
  color: #d9e8f7;
  background: var(--navy-deep);
  font-size: .82rem;
  font-weight: 750;
}

.topbar a {
  color: #fff;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 28px;
  min-height: 84px;
  padding: 12px clamp(18px, 4vw, 72px);
  background: rgba(255, 255, 255, .96);
  border-bottom: 1px solid rgba(220, 229, 241, .9);
  box-shadow: 0 14px 34px rgba(8, 40, 77, .08);
  backdrop-filter: blur(18px);
}

.brand img {
  width: 178px;
  height: auto;
}

.primary-nav {
  display: flex;
  justify-content: center;
  gap: clamp(12px, 1.5vw, 24px);
  color: #314963;
  font-size: .94rem;
  font-weight: 750;
}

.primary-nav a {
  position: relative;
  padding: 8px 0;
  transition: color .2s ease;
}

.primary-nav a::after {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: var(--blue);
  content: "";
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .2s ease;
}

.primary-nav a:hover {
  color: var(--blue);
}

.primary-nav a:hover::after {
  transform: scaleX(1);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 13px 20px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-weight: 850;
  line-height: 1.2;
  cursor: pointer;
  transition: transform .2s ease, background .2s ease, border-color .2s ease, box-shadow .2s ease;
}

.btn-icon,
.whatsapp-icon {
  width: 18px;
  height: 18px;
  margin-left: 8px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.btn .btn-icon:first-child {
  margin-left: 0;
  margin-right: 8px;
}

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

.btn-small {
  min-height: 42px;
  padding: 10px 15px;
  white-space: nowrap;
}

.btn-primary {
  color: #fff;
  background: var(--blue);
  box-shadow: 0 14px 28px rgba(23, 110, 175, .24);
}

.btn-primary:hover {
  background: #125f99;
}

.btn-light {
  color: var(--navy);
  background: #fff;
}

.btn-outline {
  color: #fff;
  border-color: rgba(255, 255, 255, .42);
  background: rgba(255, 255, 255, .08);
}

.btn-whatsapp {
  color: #fff;
  background: #1f9d63;
  box-shadow: 0 14px 28px rgba(31, 157, 99, .22);
}

.btn-whatsapp:hover {
  background: #188554;
}

.hero {
  position: relative;
  isolation: isolate;
  display: grid;
  grid-template-columns: minmax(0, .95fr) minmax(360px, 1.05fr);
  gap: clamp(34px, 5vw, 76px);
  align-items: center;
  min-height: 700px;
  padding: clamp(74px, 8vw, 112px) clamp(20px, 5vw, 84px) clamp(54px, 7vw, 92px);
  color: #fff;
  background:
    radial-gradient(circle at 78% 12%, rgba(43, 183, 212, .22), transparent 32%),
    linear-gradient(135deg, rgba(10,25,47,.96), rgba(0,102,204,.72));
  overflow: hidden;
}

.hero::before {
  position: absolute;
  inset: 0;
  z-index: -1;
  background: rgba(10, 25, 47, .75);
  content: "";
}

.hero::after {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    repeating-linear-gradient(90deg, rgba(255,255,255,.05) 0 1px, transparent 1px 92px),
    repeating-linear-gradient(0deg, rgba(255,255,255,.035) 0 1px, transparent 1px 92px);
  content: "";
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--cyan);
  font-size: .78rem;
  font-weight: 900;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 600px;
  margin: 0;
  color: #fff;
  font-size: clamp(2.5rem, 4vw, 3rem);
  line-height: 1.12;
  letter-spacing: 0;
}

.hero-lede {
  max-width: 600px;
  margin: 26px 0 0;
  color: rgba(255,255,255,.85);
  font-size: clamp(1.05rem, 1.35vw, 1.125rem);
  line-height: 1.75;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.hero-visual {
  position: relative;
  min-width: 0;
  display: flex;
  justify-content: center;
}

.preview-shell {
  position: relative;
  width: 88%;
  max-width: 520px;
  transform: translateY(-40px);
  transition: transform .28s ease, filter .28s ease;
}

.preview-shell:hover {
  transform: translateY(-46px);
  filter: saturate(1.04);
}

.preview-shell > img {
  width: 100%;
  background: #fff;
  border: 1px solid rgba(255,255,255,.2);
  border-radius: 14px;
  box-shadow: 0 25px 70px rgba(0,0,0,.25);
}

.crossref-badge {
  position: absolute;
  top: -10px;
  right: -10px;
  display: grid;
  gap: 6px;
  width: min(160px, 40%);
  padding: 8px 12px;
  background: #fff;
  border: 1px solid rgba(220,229,241,.9);
  border-radius: 8px;
  box-shadow: 0 10px 30px rgba(0,0,0,.15);
}

.crossref-badge img {
  width: 100%;
  max-height: 48px;
  object-fit: contain;
}

.crossref-badge span {
  color: var(--navy);
  font-size: .8rem;
  font-weight: 900;
  text-align: center;
}

.card-head {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 12px;
}

.card-icon {
  flex: 0 0 auto;
  width: 24px;
  height: 24px;
  color: var(--blue);
  fill: none;
  stroke: currentColor;
  stroke-width: 1.75;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: color .2s ease, transform .2s ease;
}

article:hover > .card-icon,
article:hover .card-head .card-icon,
.trust-band div:hover .card-icon {
  color: var(--cyan);
  transform: translateY(-1px);
}

.pill-list,
.timeline,
.faq-list {
  margin: 0;
  padding: 0;
}

.trust-band {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border-bottom: 1px solid var(--line);
}

.trust-band div {
  min-height: 150px;
  display: grid;
  align-content: center;
  gap: 7px;
  padding: 18px;
  color: var(--navy);
  background: #fff;
  font-weight: 900;
  line-height: 1.25;
}

.trust-band .card-icon {
  width: 22px;
  height: 22px;
}

.trust-band span {
  color: var(--blue);
  font-size: .74rem;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.trust-band strong {
  font-size: clamp(1rem, 1.4vw, 1.28rem);
  line-height: 1.18;
}

.trust-band p {
  margin: 0;
  color: var(--muted);
  font-size: .86rem;
  font-weight: 650;
  line-height: 1.35;
}

.section {
  padding: clamp(64px, 8vw, 112px) clamp(20px, 5vw, 84px);
}

.section-copy {
  max-width: 820px;
}

.section h2 {
  margin: 0;
  color: var(--navy);
  font-size: clamp(2.05rem, 3.7vw, 3.55rem);
  line-height: 1.03;
  letter-spacing: 0;
}

.section p {
  color: var(--muted);
  font-size: 1.05rem;
}

.split-section {
  display: grid;
  grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr);
  gap: clamp(32px, 5vw, 76px);
  align-items: start;
  background: var(--soft);
}

.feature-grid,
.service-matrix,
.panel-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.feature-grid article,
.service-matrix article,
.panel-grid article {
  min-height: 86px;
  display: grid;
  align-content: start;
  gap: 10px;
  padding: 18px;
  color: var(--navy);
  background: #fff;
  border: 1px solid var(--line);
  border-left: 4px solid var(--blue-2);
  border-radius: 8px;
  font-weight: 850;
  box-shadow: 0 12px 32px rgba(8, 40, 77, .06);
}

.feature-grid h3,
.service-matrix h3,
.panel-grid h3 {
  margin: 0;
  color: var(--navy);
  font-size: 1rem;
  line-height: 1.25;
}

.feature-grid p,
.service-matrix p,
.panel-grid p {
  margin: 0;
  color: var(--muted);
  font-size: .92rem;
  line-height: 1.45;
  font-weight: 600;
}

.doi-section {
  display: grid;
  grid-template-columns: 300px minmax(0, 1fr);
  gap: clamp(32px, 5vw, 70px);
  align-items: center;
}

.doi-visual {
  display: flex;
  justify-content: center;
  padding: 26px;
  background: linear-gradient(180deg, #fff, var(--soft-blue));
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.doi-visual img {
  width: min(241px, 100%);
  border-radius: 6px;
}

.knowledge-panel {
  display: grid;
  gap: 10px;
  margin-top: 24px;
}

.knowledge-panel p {
  margin: 0;
  padding: 14px 16px;
  color: #23405f;
  background: var(--soft-blue);
  border-left: 4px solid var(--cyan);
  border-radius: 8px;
  font-size: .98rem;
}

.service-matrix {
  grid-column: 1 / -1;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-top: 10px;
}

.process-section,
.panel-section,
.faq-section {
  background: var(--soft);
}

.operations-section {
  background: linear-gradient(180deg, #fff, var(--soft));
}

.operations-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.operations-grid article {
  padding: clamp(24px, 3vw, 34px);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 18px 48px rgba(8, 40, 77, .08);
}

.operations-grid h3 {
  margin: 0;
  color: var(--navy);
  font-size: 1.3rem;
}

.operations-grid p {
  margin-bottom: 0;
}

.section-heading {
  max-width: 920px;
  margin: 0 auto 36px;
  text-align: center;
}

.section-heading p {
  margin: 16px 0 0;
}

.timeline {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.timeline li {
  min-height: 250px;
  padding: 24px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 18px 46px rgba(8, 40, 77, .08);
}

.timeline .card-icon {
  width: 28px;
  height: 28px;
  margin-bottom: 18px;
}

.timeline strong {
  display: block;
  color: var(--navy);
  font-size: 1.18rem;
}

.timeline p {
  margin-bottom: 0;
  font-size: .98rem;
}

.two-column {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.deep-card {
  padding: clamp(26px, 4vw, 44px);
  background: #fff;
  border: 1px solid var(--line);
  border-top: 5px solid var(--blue);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.deep-card h2 {
  margin: 0;
  font-size: clamp(1.8rem, 3vw, 2.7rem);
}

.pill-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  list-style: none;
  margin-top: 24px;
}

.pill-list li {
  padding: 9px 12px;
  color: var(--navy);
  background: var(--soft-blue);
  border: 1px solid #c9e1fb;
  border-radius: 8px;
  font-weight: 800;
}

.panel-grid {
  max-width: 1120px;
  margin: 0 auto;
  grid-template-columns: repeat(7, minmax(0, 1fr));
}

.panel-grid article {
  min-height: 128px;
  align-items: flex-start;
}

.application-cta {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 28px;
  padding: clamp(42px, 6vw, 70px) clamp(20px, 5vw, 84px);
  color: #fff;
  background:
    linear-gradient(110deg, rgba(5, 27, 53, .98), rgba(8, 40, 77, .94), rgba(23, 110, 175, .88)),
    repeating-linear-gradient(90deg, rgba(255,255,255,.055) 0 1px, transparent 1px 86px);
}

.application-cta h2 {
  max-width: 820px;
  margin: 0;
  color: #fff;
  font-size: clamp(2rem, 3.2vw, 3.2rem);
  line-height: 1.05;
}

.application-cta p:not(.eyebrow) {
  max-width: 880px;
  color: #d9e8f7;
}

.application-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.faq-list {
  max-width: 1040px;
  margin: 0 auto;
  display: grid;
  gap: 10px;
}

details {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
}

summary {
  padding: 18px 22px;
  color: var(--navy);
  font-weight: 900;
  cursor: pointer;
}

details p {
  margin: 0;
  padding: 0 22px 20px;
}

.contact-section {
  display: grid;
  grid-template-columns: minmax(0, .82fr) minmax(340px, 1fr);
  gap: clamp(32px, 5vw, 76px);
  background: #fff;
}

.contact-card {
  margin-top: 28px;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--soft);
}

.contact-card img {
  width: 210px;
  margin-bottom: 20px;
}

.contact-card > .card-icon {
  margin-bottom: 16px;
}

address {
  display: grid;
  gap: 8px;
  color: var(--muted);
  font-style: normal;
}

address strong {
  color: var(--navy);
}

address a {
  color: var(--blue);
  font-weight: 850;
}

.contact-form {
  display: grid;
  gap: 16px;
  padding: clamp(24px, 3vw, 36px);
  background: var(--soft);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

label {
  display: grid;
  gap: 7px;
  color: var(--navy);
  font-size: .94rem;
  font-weight: 850;
}

input,
select,
textarea {
  width: 100%;
  min-height: 48px;
  padding: 12px 13px;
  color: var(--ink);
  background: #fff;
  border: 1px solid #c7d4e5;
  border-radius: 8px;
  font: inherit;
}

textarea {
  resize: vertical;
}

input:focus,
select:focus,
textarea:focus {
  outline: 3px solid rgba(23, 110, 175, .18);
  border-color: var(--blue);
}

.site-footer {
  display: grid;
  grid-template-columns: 1.45fr .65fr .8fr .95fr .75fr .95fr;
  gap: 30px;
  padding: 48px clamp(20px, 5vw, 84px) 26px;
  color: #d9e8f7;
  background: var(--navy-deep);
}

.site-footer img {
  width: 190px;
  padding: 8px;
  background: #fff;
  border-radius: 8px;
}

.site-footer h2 {
  margin: 0 0 12px;
  color: #fff;
  font-size: 1rem;
}

.site-footer p {
  color: #b9cce1;
}

.site-footer a {
  display: block;
  margin: 7px 0;
  color: #d9e8f7;
}

.copyright {
  grid-column: 1 / -1;
  margin: 18px 0 0;
  padding-top: 22px;
  border-top: 1px solid rgba(255,255,255,.14);
  font-size: .93rem;
}

.whatsapp-float {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 60;
  display: grid;
  place-items: center;
  width: 58px;
  height: 58px;
  color: #fff;
  background: #1f9d63;
  border-radius: 50%;
  box-shadow: 0 16px 38px rgba(31, 157, 99, .35);
  font-weight: 950;
}

.whatsapp-float .whatsapp-icon {
  width: 25px;
  height: 25px;
  margin: 0;
}

h1,
h2,
h3,
p,
li,
article,
summary,
a,
button {
  overflow-wrap: anywhere;
}

@media (max-width: 1220px) {
  .site-header {
    grid-template-columns: auto auto;
  }

  .primary-nav {
    grid-column: 1 / -1;
    grid-row: 2;
    justify-content: flex-start;
    flex-wrap: wrap;
  }

  .hero,
  .split-section,
  .doi-section,
  .contact-section {
    grid-template-columns: 1fr;
  }

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

  .hero-visual {
    max-width: 860px;
  }

  .trust-band,
  .service-matrix,
  .panel-grid,
  .operations-grid,
  .site-footer {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .doi-visual {
    max-width: 360px;
  }
}

@media (max-width: 860px) {
  .topbar {
    display: none;
  }

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

  .brand img {
    width: 156px;
  }

  .primary-nav {
    display: none;
  }

  .site-header .btn {
    width: 100%;
  }

  .hero {
    min-height: auto;
    padding-top: 54px;
  }

  .hero-copy {
    order: 2;
  }

  .hero-visual {
    order: 1;
    width: 100%;
    margin-bottom: 20px;
  }

  .hero h1 {
    font-size: clamp(2.15rem, 10vw, 2.75rem);
  }

  .hero-actions {
    display: grid;
  }

  .preview-shell {
    width: 100%;
    max-width: none;
    transform: translateY(0);
  }

  .preview-shell:hover {
    transform: none;
  }

  .crossref-badge {
    left: 50%;
    right: auto;
    top: -10px;
    bottom: auto;
    width: min(170px, 56%);
    transform: translateX(-50%);
  }

  .btn {
    width: 100%;
  }

  .trust-band,
  .feature-grid,
  .service-matrix,
  .timeline,
  .two-column,
  .panel-grid,
  .operations-grid,
  .application-cta,
  .site-footer {
    grid-template-columns: 1fr;
  }

  .application-actions {
    display: grid;
    justify-content: stretch;
  }

  .trust-band div {
    min-height: 74px;
  }

  .timeline li {
    min-height: auto;
  }

  .site-footer {
    padding-bottom: 90px;
  }
}

@media (max-width: 520px) {
  .section,
  .hero {
    padding-inline: 16px;
  }

  .section h2 {
    font-size: 1.9rem;
  }

  .deep-card,
  .contact-form,
  .contact-card {
    padding: 20px;
  }

  .whatsapp-float {
    right: 16px;
    bottom: 16px;
  }
}