:root {
  --ink: #18221f;
  --muted: #5a665f;
  --line: #dfe5df;
  --paper: #faf8f3;
  --white: #ffffff;
  --pine: #193c35;
  --brass: #c58b37;
  --clay: #b85f42;
  --blue: #2f6f8f;
  --shadow: 0 22px 50px rgba(24, 34, 31, 0.14);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Arial, "Microsoft YaHei", "PingFang SC", sans-serif;
  line-height: 1.6;
}

img {
  display: block;
  max-width: 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;
  min-height: 76px;
  padding: 14px clamp(18px, 5vw, 64px);
  border-bottom: 1px solid rgba(223, 229, 223, 0.86);
  background: rgba(250, 248, 243, 0.92);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 190px;
}
.brand-logo-img {
  width: 40px;      /* 宽度设为 40 像素，大小刚刚好 */
  height: 40px;     /* 高度也设为 40 像素，保持 1:1 正方形 */
  object-fit: contain;
  vertical-align: middle; /* 防止图片和文字错位 */
}
.brand-mark {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border-radius: 8px;
  color: var(--white);
  background: var(--pine);
  font-weight: 800;
}

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

.brand small {
  color: var(--muted);
  font-size: 12px;
}

.nav {
  display: flex;
  gap: 8px;
  align-items: center;
}

.nav a,
.header-call {
  border-radius: 999px;
  padding: 10px 14px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
}

.nav a[aria-current="page"],
.nav a:hover {
  color: var(--pine);
  background: rgba(25, 60, 53, 0.08);
}

.header-call {
  color: var(--white);
  background: var(--pine);
}

.hero {
  position: relative;
  min-height: clamp(620px, 88vh, 820px);
  overflow: hidden;
  display: grid;
  align-items: end;
}

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

.hero img {
  object-fit: cover;
}

.hero-overlay {
  background: linear-gradient(90deg, rgba(12, 25, 22, 0.86), rgba(12, 25, 22, 0.35) 56%, rgba(12, 25, 22, 0.1));
}

.hero-content {
  position: relative;
  width: min(760px, calc(100% - 36px));
  margin: 0 0 clamp(44px, 8vw, 96px) clamp(18px, 6vw, 82px);
  color: var(--white);
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--brass);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

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

h1 {
  margin-bottom: 20px;
  font-size: clamp(42px, 7vw, 76px);
  line-height: 1.02;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 16px;
  font-size: clamp(30px, 4vw, 48px);
  line-height: 1.08;
}

h3 {
  font-size: 22px;
  line-height: 1.18;
}

.hero-copy {
  max-width: 660px;
  color: rgba(255, 255, 255, 0.9);
  font-size: 18px;
}

.hero-actions,
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  border: 0;
  border-radius: 8px;
  padding: 13px 20px;
  font-weight: 800;
  cursor: pointer;
}

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

.button.primary.dark {
  color: var(--white);
  background: var(--pine);
}

.button.ghost {
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.44);
}

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

.trust-strip div {
  padding: 24px clamp(18px, 4vw, 44px);
  background: var(--white);
}

.trust-strip strong,
.trust-strip span {
  display: block;
}

.trust-strip span {
  color: var(--muted);
  font-size: 14px;
}

.section,
.service-grid,
.service-list,
.page-hero,
.quote-layout {
  width: min(1180px, calc(100% - 36px));
  margin: 0 auto;
}

.section {
  padding: clamp(58px, 8vw, 108px) 0;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(280px, 0.7fr);
  gap: clamp(28px, 6vw, 86px);
  align-items: end;
}

.split p:last-child,
.section-heading + p {
  color: var(--muted);
  font-size: 18px;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  padding-bottom: clamp(58px, 8vw, 108px);
}

.service-card {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  box-shadow: 0 12px 24px rgba(24, 34, 31, 0.06);
}

.service-card img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.service-card div {
  padding: 22px;
}

.service-card p,
.service-list p,
.process span,
.quote-intro p,
.footer p {
  color: var(--muted);
}

.cta-band {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  width: min(1180px, calc(100% - 36px));
  margin-bottom: clamp(20px, 5vw, 60px);
  padding: clamp(34px, 6vw, 60px);
  border-radius: 8px;
  color: var(--white);
  background: linear-gradient(135deg, var(--pine), #285f55 64%, var(--blue));
}

.cta-band .eyebrow,
.cta-band p {
  color: rgba(255, 255, 255, 0.82);
}

.cta-band h2 {
  color: var(--white);
}

.areas {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.areas span {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 10px 16px;
  background: var(--white);
  color: var(--muted);
  font-weight: 700;
}

.page-hero {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(320px, 0.8fr);
  gap: clamp(28px, 6vw, 72px);
  align-items: center;
  padding: clamp(48px, 8vw, 90px) 0;
}

.page-hero img {
  width: 100%;
  aspect-ratio: 4 / 3;
  border-radius: 8px;
  object-fit: cover;
  box-shadow: var(--shadow);
}

.page-hero p,
.quote-intro p {
  font-size: 18px;
}

.service-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  padding-bottom: 60px;
}

.service-list article {
  min-height: 220px;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
}

.service-list h2 {
  font-size: 25px;
}

.process ol {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  padding: 0;
  margin: 28px 0 0;
  list-style: none;
}

.process li {
  padding: 24px;
  border-left: 4px solid var(--brass);
  background: var(--white);
}

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

.quote-layout {
  display: grid;
  grid-template-columns: minmax(280px, 0.7fr) minmax(320px, 1fr);
  gap: clamp(28px, 6vw, 72px);
  align-items: start;
  padding: clamp(48px, 8vw, 94px) 0;
}

.contact-panel {
  display: grid;
  gap: 8px;
  margin-top: 28px;
  padding: 22px;
  border-radius: 8px;
  color: var(--white);
  background: var(--pine);
}

.contact-panel a {
  color: rgba(255, 255, 255, 0.86);
}

.quote-form {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  padding: clamp(22px, 4vw, 34px);
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  box-shadow: var(--shadow);
}

.quote-form label {
  display: grid;
  gap: 8px;
  font-weight: 800;
}

.quote-form .full,
.form-note,
.form-button {
  grid-column: 1 / -1;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid #cdd6cf;
  border-radius: 8px;
  padding: 13px 14px;
  color: var(--ink);
  background: #fbfcfb;
  font: inherit;
}

textarea {
  resize: vertical;
}

input:focus,
select:focus,
textarea:focus {
  outline: 3px solid rgba(197, 139, 55, 0.28);
  border-color: var(--brass);
}

.checkbox {
  grid-template-columns: auto 1fr;
  align-items: start;
  font-weight: 500;
}

.checkbox input {
  width: 18px;
  height: 18px;
  margin-top: 4px;
}

.form-button {
  width: 100%;
}

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

.footer {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 18px;
  padding: 34px clamp(18px, 5vw, 64px);
  border-top: 1px solid var(--line);
  background: var(--white);
}

.footer-links a {
  color: var(--muted);
  font-weight: 700;
}

.credit {
  grid-column: 1 / -1;
  margin-bottom: 0;
  font-size: 13px;
}

.credit a {
  color: var(--pine);
  font-weight: 800;
}

@media (max-width: 850px) {
  .site-header {
    position: static;
    align-items: flex-start;
    flex-direction: column;
    gap: 12px;
  }

  .nav {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 2px;
  }

  .header-call {
    width: 100%;
    text-align: center;
  }

  .hero {
    min-height: 680px;
  }

  .hero-overlay {
    background: linear-gradient(180deg, rgba(12, 25, 22, 0.3), rgba(12, 25, 22, 0.9));
  }

  .hero-content {
    margin-right: 18px;
  }

  .trust-strip,
  .service-grid,
  .service-list,
  .process ol,
  .split,
  .page-hero,
  .quote-layout,
  .footer {
    grid-template-columns: 1fr;
  }

  .cta-band {
    align-items: flex-start;
    flex-direction: column;
  }

  .quote-form {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 520px) {
  .hero-actions,
  .button {
    width: 100%;
  }

  h1 {
    font-size: 40px;
  }

  .service-list article {
    min-height: auto;
  }
}