:root {
  color-scheme: light;
  --ink: #172033;
  --muted: #667085;
  --line: #d8e0ea;
  --blue: #2288d8;
  --blue-dark: #1263a7;
  --green: #1f9d7a;
  --paper: #ffffff;
  --soft: #f4f8fb;
  --soft-blue: #e8f4fd;
  --shadow: 0 18px 50px rgba(24, 48, 78, 0.11);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Arial, "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.65;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 26px;
  padding: 16px clamp(18px, 5vw, 72px);
  border-bottom: 1px solid rgba(216, 224, 234, 0.75);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(14px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  white-space: nowrap;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  color: white;
  background: var(--blue);
  border-radius: 8px;
}

.nav {
  display: flex;
  gap: 18px;
  margin-left: auto;
  color: #344054;
  font-size: 15px;
}

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

.header-cta,
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 10px 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-weight: 700;
  cursor: pointer;
}

.header-cta,
.btn.primary {
  color: white;
  border-color: var(--blue);
  background: var(--blue);
}

.btn.primary:hover,
.header-cta:hover {
  background: var(--blue-dark);
}

.btn.secondary {
  color: var(--ink);
  background: white;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(300px, 0.8fr);
  gap: 42px;
  align-items: center;
  padding: clamp(58px, 8vw, 100px) clamp(18px, 5vw, 72px) 64px;
  background:
    linear-gradient(120deg, rgba(232, 244, 253, 0.95), rgba(255, 255, 255, 0.85)),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='900' height='520' viewBox='0 0 900 520'%3E%3Cg fill='none' stroke='%232288d8' stroke-opacity='.18'%3E%3Cpath d='M0 90h900M0 190h900M0 290h900M0 390h900M100 0v520M260 0v520M420 0v520M580 0v520M740 0v520'/%3E%3C/g%3E%3Ccircle cx='680' cy='150' r='76' fill='%231f9d7a' fill-opacity='.12'/%3E%3Cpath d='M607 271l184-82-55 185-41-74-88-29z' fill='%232288d8' fill-opacity='.22'/%3E%3C/svg%3E");
  background-size: cover;
}

.eyebrow {
  display: inline-block;
  margin-bottom: 12px;
  color: var(--green);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
}

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

h1 {
  max-width: 860px;
  margin-bottom: 18px;
  font-size: clamp(40px, 6vw, 72px);
  line-height: 1.05;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 16px;
  font-size: clamp(26px, 3vw, 38px);
  line-height: 1.2;
}

h3 {
  margin-bottom: 10px;
  font-size: 21px;
  line-height: 1.28;
}

.hero p,
.page-hero p {
  max-width: 760px;
  color: #40516a;
  font-size: 19px;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.hero-panel {
  display: grid;
  gap: 14px;
  padding: 22px;
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid rgba(216, 224, 234, 0.9);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.hero-panel div {
  padding: 18px;
  border-radius: 8px;
  background: var(--soft);
}

.hero-panel span {
  display: block;
  color: var(--muted);
  font-size: 14px;
}

.hero-panel strong {
  display: block;
  margin-top: 4px;
  font-size: 22px;
}

.section,
.page-hero,
.article {
  padding: 58px clamp(18px, 5vw, 72px);
}

.page-hero {
  background: var(--soft);
}

.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 24px;
}

.grid {
  display: grid;
  gap: 18px;
}

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

.service,
.article-card,
.quote-box {
  min-height: 100%;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
  box-shadow: 0 12px 34px rgba(24, 48, 78, 0.06);
}

.article-cover {
  display: block;
  height: 168px;
  margin: -6px -6px 18px;
  overflow: hidden;
  border-radius: 8px;
  background: var(--soft);
}

.article-cover img,
.article-main-cover img,
.content-image img,
.cover-preview img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.service p,
.article-card p,
.quote-box p {
  color: var(--muted);
}

.badge {
  display: inline-flex;
  margin-bottom: 12px;
  padding: 5px 10px;
  color: var(--blue-dark);
  background: var(--soft-blue);
  border-radius: 8px;
  font-size: 13px;
  font-weight: 800;
}

.article-card h3 a:hover {
  color: var(--blue-dark);
}

.article-card span,
.article-meta {
  color: var(--muted);
  font-size: 14px;
}

.band {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 28px;
  align-items: center;
  padding: 48px clamp(18px, 5vw, 72px);
  color: white;
  background: #12324f;
}

.band p {
  margin: 0;
  color: #d9e8f4;
  font-size: 18px;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, 0.8fr);
  gap: 28px;
  align-items: start;
}

.steps {
  display: grid;
  gap: 14px;
  padding: 0;
  list-style: none;
}

.steps li {
  display: grid;
  gap: 4px;
  padding: 18px;
  border-left: 4px solid var(--blue);
  background: var(--soft);
}

.steps span,
.faq p {
  color: var(--muted);
}

.faq {
  display: grid;
  gap: 12px;
}

.faq details {
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
}

.faq summary {
  cursor: pointer;
  font-weight: 800;
}

.article {
  max-width: 920px;
  margin: 0 auto;
}

.article h1 {
  font-size: clamp(34px, 5vw, 56px);
}

.article-summary {
  color: #40516a;
  font-size: 19px;
}

.article-body {
  margin-top: 34px;
  color: #26364d;
  font-size: 17px;
}

.article-main-cover {
  height: clamp(220px, 42vw, 430px);
  margin: 30px 0 10px;
  overflow: hidden;
  border-radius: 8px;
  background: var(--soft);
}

.content-image {
  margin: 28px 0;
  overflow: hidden;
  border-radius: 8px;
  background: var(--soft);
}

.content-image img {
  height: auto;
  max-height: 560px;
}

.article-body h2 {
  margin-top: 36px;
  font-size: 28px;
}

.article-body h3 {
  margin-top: 28px;
}

.article-body li {
  margin-bottom: 8px;
}

.article-cta {
  margin-top: 42px;
  padding: 28px;
  border-radius: 8px;
  background: var(--soft);
}

.back-link {
  display: inline-block;
  margin-bottom: 18px;
  color: var(--blue-dark);
  font-weight: 800;
}

.contact-block {
  max-width: 820px;
}

.lead-form {
  display: grid;
  gap: 14px;
}

input,
textarea,
select {
  width: 100%;
  min-height: 44px;
  padding: 11px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
  font: inherit;
}

textarea {
  min-height: 120px;
  resize: vertical;
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 34px clamp(18px, 5vw, 72px);
  color: #d8e6f2;
  background: #0f2538;
}

.footer p {
  margin: 8px 0 0;
  color: #adc2d2;
}

.footer-links {
  display: flex;
  gap: 16px;
}

.admin-body {
  min-height: 100vh;
  background: #f3f7fb;
}

.admin-shell {
  display: grid;
  grid-template-columns: 320px minmax(0, 1fr);
  min-height: 100vh;
}

.admin-sidebar {
  padding: 26px;
  color: white;
  background: #102a43;
}

.admin-sidebar p {
  color: #c7d7e5;
}

.admin-main {
  padding: 28px;
}

.admin-panel {
  margin-bottom: 18px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
}

.nested-panel {
  margin: 0;
  box-shadow: none;
}

.nested-panel h2 {
  font-size: 21px;
}

.admin-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.admin-list {
  display: grid;
  gap: 10px;
}

.upload-row {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-top: 14px;
}

.upload-row input[type="file"] {
  min-height: auto;
  padding: 9px;
}

.upload-row.compact {
  margin-top: 0;
}

.cover-preview {
  max-width: 360px;
  margin-top: 14px;
}

.cover-preview img {
  height: 180px;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.admin-item {
  display: grid;
  gap: 8px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
}

.admin-item-actions {
  display: flex;
  gap: 8px;
}

.message {
  min-height: 24px;
  color: var(--blue-dark);
  font-weight: 800;
}

@media (max-width: 860px) {
  .site-header {
    align-items: flex-start;
    flex-wrap: wrap;
  }

  .nav {
    order: 3;
    width: 100%;
    margin-left: 0;
    overflow-x: auto;
  }

  .header-cta {
    margin-left: auto;
  }

  .hero,
  .grid.three,
  .band,
  .split,
  .admin-shell,
  .admin-grid {
    grid-template-columns: 1fr;
  }

  .upload-row,
  .upload-row.compact {
    align-items: stretch;
    flex-direction: column;
  }

  h1 {
    font-size: 42px;
  }

  .footer {
    flex-direction: column;
  }
}

@media (max-width: 540px) {
  .header-cta {
    width: 100%;
  }

  .hero,
  .section,
  .page-hero,
  .article {
    padding-left: 16px;
    padding-right: 16px;
  }

  .actions,
  .footer-links {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }
}