:root {
  --ink: #17201c;
  --muted: #62706b;
  --forest: #133a2d;
  --forest-2: #1d4a3b;
  --sage: #8fa99b;
  --brass: #b89554;
  --paper: #f7f4ee;
  --stone: #e7e0d5;
  --white: #ffffff;
  --line: rgba(23, 32, 28, 0.14);
  --shadow: 0 18px 50px rgba(19, 58, 45, 0.16);
  font-family: "Inter", "Noto Sans SC", "PingFang SC", "Source Han Sans SC", "Microsoft YaHei", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  text-rendering: geometricPrecision;
}

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

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 68px;
  padding: 0 clamp(20px, 4vw, 56px);
  color: var(--white);
  transition: background 180ms ease, box-shadow 180ms ease, color 180ms ease;
}

.site-header[data-elevated="true"] {
  color: var(--ink);
  background: rgba(247, 244, 238, 0.94);
  box-shadow: 0 8px 30px rgba(23, 32, 28, 0.08);
  backdrop-filter: blur(18px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: 300px;
}

.brand-logo {
  flex: 0 0 auto;
  width: 86px;
  height: 54px;
  border-radius: 0;
  background: url("./assets/suqi-logo-tree.jpg") center center / contain no-repeat;
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  font-size: 15px;
  font-weight: 650;
  letter-spacing: 0;
}

.brand small {
  margin-top: 2px;
  color: currentColor;
  font-size: 11px;
  font-weight: 400;
  opacity: 0.72;
}

.nav {
  display: flex;
  align-items: center;
  gap: 22px;
  font-size: 14px;
  font-weight: 500;
}

.nav a {
  opacity: 0.86;
}

.nav a:hover {
  opacity: 1;
}

.menu-button {
  display: none;
  width: 42px;
  height: 42px;
  padding: 0;
  border: 1px solid currentColor;
  border-radius: 50%;
  color: inherit;
  background: transparent;
}

.menu-button span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 5px auto;
  background: currentColor;
}

.mobile-nav {
  position: fixed;
  top: 72px;
  right: 16px;
  z-index: 19;
  display: none;
  min-width: 210px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(247, 244, 238, 0.98);
  box-shadow: var(--shadow);
}

.mobile-nav a {
  display: block;
  padding: 12px 10px;
  border-bottom: 1px solid rgba(23, 32, 28, 0.08);
}

.mobile-nav a:last-of-type {
  border-bottom: 0;
}

.mobile-lang {
  width: 100%;
  margin-top: 8px;
  color: var(--forest);
}

.mobile-nav.open {
  display: block;
}

.hero {
  position: relative;
  min-height: 86vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  color: var(--white);
}

.hero-image,
.hero-shade {
  position: absolute;
  inset: 0;
}

.hero-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-shade {
  background:
    linear-gradient(90deg, rgba(8, 27, 21, 0.8) 0%, rgba(8, 27, 21, 0.58) 42%, rgba(8, 27, 21, 0.16) 100%),
    linear-gradient(0deg, rgba(8, 27, 21, 0.34), rgba(8, 27, 21, 0.06));
}

.hero-content {
  position: relative;
  width: min(1180px, calc(100% - 40px));
  margin-left: clamp(20px, 7vw, 96px);
  padding-top: 42px;
}

.eyebrow,
.section-kicker {
  margin: 0 0 16px;
  color: var(--brass);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
}

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

p {
  line-height: 1.78;
  text-wrap: pretty;
}

h1 {
  max-width: 1180px;
  margin-bottom: 24px;
  font-size: clamp(42px, 5.2vw, 74px);
  line-height: 1.12;
  letter-spacing: 0;
  font-weight: 650;
}

.hero h1 {
  max-width: 1080px;
  font-size: clamp(42px, 4.6vw, 68px);
  white-space: normal;
  text-wrap: balance;
}

.hero-copy {
  max-width: 650px;
  margin-bottom: 36px;
  color: rgba(255, 255, 255, 0.84);
  font-size: clamp(16px, 1.65vw, 20px);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.primary-action,
.secondary-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 6px;
  font-weight: 600;
}

.primary-action {
  color: var(--forest);
  background: var(--white);
}

.secondary-action {
  border: 1px solid rgba(255, 255, 255, 0.5);
}

.hero-metrics {
  position: absolute;
  right: clamp(20px, 5vw, 72px);
  bottom: 36px;
  display: grid;
  grid-template-columns: repeat(4, minmax(86px, 1fr));
  gap: 1px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.14);
  backdrop-filter: blur(18px);
}

.hero-metrics span {
  padding: 18px 16px;
  text-align: center;
  font-weight: 600;
  background: rgba(8, 27, 21, 0.2);
}

.section,
.section-band,
.contact {
  padding: clamp(66px, 8vw, 108px) 0;
}

.section-inner {
  width: min(1160px, calc(100% - 40px));
  margin: 0 auto;
}

.two-column,
.insights-grid,
.contact-inner {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  gap: clamp(32px, 6vw, 96px);
  align-items: start;
}

.two-column > p {
  max-width: 720px;
  margin-bottom: 0;
  font-size: 17px;
  line-height: 1.9;
}

.section-band {
  background: var(--forest);
  color: var(--white);
}

.section-band p:last-child {
  color: rgba(255, 255, 255, 0.78);
  font-size: 17px;
}

.section-title {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 34px;
}

h2 {
  max-width: 720px;
  margin-bottom: 0;
  font-size: clamp(28px, 3.4vw, 42px);
  line-height: 1.22;
  letter-spacing: 0;
  font-weight: 650;
}

h3 {
  margin-bottom: 10px;
  font-size: 21px;
  line-height: 1.3;
  font-weight: 650;
}

.client-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.client-card,
.insight-panel,
.contact-box {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.72);
  box-shadow: 0 12px 38px rgba(23, 32, 28, 0.06);
}

.client-card {
  min-height: 210px;
  padding: 26px;
}

.client-card span {
  display: inline-flex;
  margin-bottom: 32px;
  color: var(--brass);
  font-weight: 600;
}

.client-card p,
.service-list p,
.method-track p,
.insights p,
.contact p {
  color: var(--muted);
}

.section-muted {
  background: #ebe6dc;
}

.intelligence {
  background: #112920;
  color: var(--white);
}

.intelligence-layout {
  display: grid;
  grid-template-columns: minmax(320px, 0.82fr) minmax(0, 1.18fr);
  gap: clamp(36px, 6vw, 84px);
  align-items: start;
}

.intelligence p {
  color: rgba(255, 255, 255, 0.74);
}

.intelligence-layout > div:first-child h2 {
  max-width: 500px;
  font-size: clamp(30px, 3vw, 40px);
  line-height: 1.3;
  text-wrap: balance;
}

.intelligence-layout > div:first-child > p {
  max-width: 560px;
  margin-top: 20px;
  margin-bottom: 0;
  font-size: 16px;
  line-height: 1.9;
}

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

.intelligence-grid article {
  min-height: 210px;
  padding: 26px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.07);
}

.intelligence-grid span {
  display: inline-block;
  margin-bottom: 24px;
  color: var(--brass);
  font-weight: 600;
}

.intelligence-grid h3 {
  margin-bottom: 12px;
  font-size: 20px;
}

.intelligence-grid p {
  margin-bottom: 0;
  font-size: 15px;
  line-height: 1.8;
}

.service-list {
  display: grid;
  gap: 14px;
}

.service-list article {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 22px;
  align-items: start;
  padding: 26px;
  border: 1px solid rgba(19, 58, 45, 0.12);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.64);
}

.service-index {
  display: grid;
  width: 52px;
  height: 52px;
  place-items: center;
  border-radius: 50%;
  color: var(--white);
  background: var(--forest);
  font-weight: 600;
}

.method {
  background: var(--paper);
}

.source-hub {
  background: #f7f4ee;
}

.source-hub .section-title {
  display: grid;
  grid-template-columns: minmax(260px, 0.8fr) minmax(0, 1.2fr);
  align-items: start;
}

.source-hub .section-title p {
  max-width: 680px;
  margin: 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.8;
}

.source-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.source-grid article {
  min-height: 280px;
  padding: 24px;
  border: 1px solid rgba(23, 32, 28, 0.12);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.72);
  box-shadow: 0 10px 30px rgba(23, 32, 28, 0.05);
}

.source-grid h3 {
  margin-bottom: 18px;
  color: var(--forest);
}

.source-grid a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 38px;
  border-bottom: 1px solid rgba(23, 32, 28, 0.08);
  color: var(--ink);
  font-weight: 500;
}

.source-grid a::after {
  content: "↗";
  color: var(--brass);
  font-size: 13px;
}

.source-grid a:last-child {
  border-bottom: 0;
}

.method-track {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--line);
}

.method-track div {
  min-height: 220px;
  padding: 28px;
  background: var(--white);
}

.method-track span {
  display: grid;
  width: 38px;
  height: 38px;
  margin-bottom: 36px;
  place-items: center;
  border-radius: 50%;
  color: var(--forest);
  background: #e7efe9;
  font-weight: 600;
}

.insights {
  color: var(--ink);
  background: #f0ebe3;
}

.insights p {
  color: var(--muted);
}

.insight-panel {
  padding: 30px;
  color: var(--ink);
}

.insight-panel ul {
  margin: 16px 0 0;
  padding-left: 20px;
}

.insight-panel li {
  margin: 10px 0;
}

.insight-list {
  display: grid;
  gap: 12px;
}

.insight-card {
  padding: 22px 24px;
  border: 1px solid rgba(23, 32, 28, 0.1);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.72);
  box-shadow: 0 10px 32px rgba(23, 32, 28, 0.05);
}

.insight-card h3 {
  margin-bottom: 10px;
  color: var(--ink);
  font-size: 20px;
  line-height: 1.35;
}

.insight-card p {
  color: var(--muted);
}

.insight-date {
  margin-bottom: 10px;
  color: var(--brass) !important;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
}

.insight-card a {
  display: inline-flex;
  margin-top: 8px;
  color: var(--forest);
  font-weight: 600;
}

.article-page {
  background: var(--paper);
}

.article-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 78px;
  padding: 0 clamp(20px, 4vw, 56px);
  border-bottom: 1px solid var(--line);
  background: var(--paper);
}

.article-brand {
  color: var(--ink);
}

.back-link {
  color: var(--forest);
  font-weight: 600;
}

.article-shell {
  width: min(860px, calc(100% - 40px));
  margin: 0 auto;
  padding: 76px 0 96px;
}

.article-body {
  padding: clamp(28px, 5vw, 64px);
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  box-shadow: 0 18px 50px rgba(23, 32, 28, 0.08);
}

.article-body h1 {
  max-width: 760px;
  margin-bottom: 18px;
  color: var(--ink);
  font-size: clamp(30px, 4vw, 44px);
  line-height: 1.22;
}

.article-body h2 {
  margin-top: 36px;
  font-size: 24px;
}

.article-body h3 {
  margin-top: 30px;
  font-size: 22px;
}

.article-summary {
  color: var(--muted);
  font-size: 18px;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 24px 0 42px;
}

.article-meta span {
  padding: 6px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--forest);
  font-size: 13px;
  font-weight: 600;
  background: var(--paper);
}

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

.article-footer {
  border-top: 1px solid var(--line);
}

.vision {
  background: #e8e2d8;
}

.vision-layout {
  display: grid;
  grid-template-columns: minmax(360px, 0.95fr) minmax(0, 1.05fr);
  gap: clamp(36px, 6vw, 84px);
  align-items: start;
}

.vision-statement h2 {
  max-width: 520px;
  font-size: clamp(30px, 3vw, 40px);
  line-height: 1.3;
  text-wrap: balance;
}

.vision-copy p {
  color: var(--muted);
  font-size: 16px;
  line-height: 1.9;
}

.vision-steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  margin-top: 34px;
  border: 1px solid rgba(19, 58, 45, 0.14);
  border-radius: 8px;
  background: rgba(19, 58, 45, 0.14);
}

.vision-steps span {
  min-height: 86px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 18px;
  text-align: center;
  color: var(--forest);
  background: rgba(255, 255, 255, 0.56);
  font-weight: 600;
}

.contact {
  background: var(--paper);
}

.contact-box {
  padding: 30px;
}

.contact-box span,
.contact-box a {
  display: block;
}

.contact-box span {
  margin-bottom: 18px;
  color: var(--brass);
  font-weight: 600;
}

.contact-box a {
  margin-bottom: 14px;
  font-size: clamp(22px, 3vw, 32px);
  font-weight: 600;
  overflow-wrap: anywhere;
}

.lead-form {
  display: grid;
  gap: 16px;
}

.lead-form > p:last-child {
  max-width: 100%;
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
}

.hidden-field {
  display: none;
}

.lead-form label {
  display: grid;
  gap: 8px;
}

.lead-form small {
  color: var(--muted);
  font-weight: 600;
}

.lead-form input,
.lead-form textarea {
  width: 100%;
  border: 1px solid rgba(23, 32, 28, 0.16);
  border-radius: 6px;
  padding: 13px 14px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.82);
  font: inherit;
}

.lead-form textarea {
  resize: vertical;
}

.lead-form button {
  min-height: 48px;
  border: 0;
  border-radius: 6px;
  color: var(--white);
  background: var(--forest);
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 28px clamp(20px, 4vw, 56px);
  color: rgba(255, 255, 255, 0.7);
  background: #0d1713;
  font-size: 13px;
}

.footer a {
  color: rgba(255, 255, 255, 0.86);
  font-weight: 600;
}

@media (max-width: 900px) {
  .nav {
    display: none;
  }

  .menu-button {
    display: block;
  }

  .hero {
    min-height: 86vh;
  }

  .hero-content {
    margin: 0 auto;
    padding-top: 96px;
  }

  .hero-metrics {
    left: 20px;
    right: 20px;
    bottom: 22px;
    grid-template-columns: repeat(2, 1fr);
  }

  .two-column,
  .insights-grid,
  .contact-inner,
  .intelligence-layout,
  .vision-layout,
  .client-grid,
  .method-track {
    grid-template-columns: 1fr;
  }

  .source-hub .section-title {
    grid-template-columns: 1fr;
  }

  .intelligence-grid,
  .vision-steps,
  .source-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .method-track div {
    min-height: 190px;
  }
}

@media (max-width: 560px) {
  .site-header {
    min-height: 64px;
    padding: 0 16px;
  }

  .brand {
    min-width: auto;
  }

  .brand small {
    display: none;
  }

  .brand-logo {
    width: 70px;
    height: 44px;
  }

  .mobile-nav {
    top: 64px;
  }

  h1 {
    font-size: 36px;
  }

  h2,
  .intelligence-layout > div:first-child h2,
  .vision-statement h2 {
    font-size: 30px;
    line-height: 1.32;
  }

  .two-column > p,
  .section-band p:last-child,
  .vision-copy p {
    font-size: 16px;
    line-height: 1.85;
  }

  .hero h1 {
    font-size: 34px;
    white-space: normal;
  }

  .hero-copy {
    font-size: 16px;
  }

  .hero-actions a {
    width: 100%;
  }

  .hero-metrics {
    display: none;
  }

  .service-list article {
    grid-template-columns: 1fr;
  }

  .footer {
    display: block;
  }

  .footer span {
    display: block;
    margin: 8px 0;
  }

  .intelligence-grid,
  .vision-steps,
  .source-grid {
    grid-template-columns: 1fr;
  }

  .article-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 14px;
    padding-top: 16px;
    padding-bottom: 16px;
  }
}