:root {
  color-scheme: light;
  --ink: #151713;
  --muted: #5f675f;
  --line: #dde4dc;
  --paper: #f8faf5;
  --white: #ffffff;
  --green: #236f4b;
  --cyan: #176e7a;
  --gold: #a66b17;
  --clay: #874d3b;
  --shadow: 0 18px 46px rgba(20, 24, 20, 0.16);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

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

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

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

.site-header {
  position: fixed;
  z-index: 20;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px clamp(20px, 5vw, 72px);
  color: var(--white);
  background: linear-gradient(180deg, rgba(0, 0, 0, 0.62), rgba(0, 0, 0, 0));
}

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

.brand-mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border: 1px solid rgba(255, 255, 255, 0.55);
  background: rgba(255, 255, 255, 0.16);
  font-size: 17px;
}

.site-nav {
  display: flex;
  gap: clamp(14px, 3vw, 30px);
  font-size: 14px;
}

.site-nav a {
  opacity: 0.88;
}

.site-nav a:hover {
  opacity: 1;
}

.hero {
  position: relative;
  min-height: 82vh;
  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(6, 11, 9, 0.9) 0%, rgba(6, 11, 9, 0.7) 40%, rgba(6, 11, 9, 0.18) 100%),
    linear-gradient(0deg, rgba(6, 11, 9, 0.44), rgba(6, 11, 9, 0.08));
}

.hero-content {
  position: relative;
  z-index: 1;
  width: min(790px, calc(100% - 40px));
  margin-left: clamp(20px, 8vw, 96px);
  padding-top: 52px;
}

.eyebrow {
  margin: 0 0 12px;
  color: #c9ead9;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1 {
  margin-bottom: 18px;
  font-size: clamp(48px, 8vw, 92px);
  line-height: 1.05;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 14px;
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.2;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 20px;
}

.hero-copy {
  width: min(660px, 100%);
  color: rgba(255, 255, 255, 0.88);
  font-size: clamp(17px, 2vw, 22px);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.primary-link,
.secondary-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid rgba(255, 255, 255, 0.58);
  font-weight: 800;
}

.primary-link {
  background: var(--white);
  color: var(--ink);
}

.secondary-link {
  color: var(--white);
  background: rgba(255, 255, 255, 0.12);
}

.intro-band {
  background: var(--ink);
  color: var(--white);
}

.intro-grid {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: rgba(255, 255, 255, 0.12);
}

.intro-grid > div {
  padding: 26px;
  background: var(--ink);
}

.stat {
  display: block;
  margin-bottom: 6px;
  color: #d8f5e4;
  font-size: 30px;
  font-weight: 900;
}

.intro-grid p {
  margin: 0;
  color: rgba(255, 255, 255, 0.76);
}

.section {
  padding: clamp(58px, 9vw, 104px) clamp(20px, 5vw, 72px);
}

.section-muted {
  background: #edf3ec;
}

.section-heading {
  width: min(830px, 100%);
  margin: 0 auto 34px;
  text-align: center;
}

.section-heading p:not(.eyebrow),
.section-copy p {
  color: var(--muted);
}

.split-section {
  width: min(1180px, 100%);
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(320px, 0.9fr);
  gap: clamp(28px, 6vw, 72px);
  align-items: center;
}

.split-section.reverse {
  grid-template-columns: minmax(320px, 0.85fr) minmax(0, 1fr);
}

.split-section.reverse .section-copy {
  order: 2;
}

.plain-list {
  display: grid;
  gap: 18px;
  border-left: 1px solid var(--line);
  padding-left: clamp(22px, 4vw, 42px);
}

.plain-list div {
  display: grid;
  gap: 5px;
}

.plain-list strong {
  font-size: 20px;
}

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

.service-grid {
  width: min(1120px, 100%);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.service-grid article {
  min-height: 236px;
  padding: 24px;
  border: 1px solid var(--line);
  background: var(--white);
  box-shadow: 0 8px 24px rgba(34, 41, 36, 0.06);
}

.service-grid article span {
  display: inline-flex;
  margin-bottom: 28px;
  color: var(--green);
  font-weight: 900;
}

.service-grid article:nth-child(2) span {
  color: var(--cyan);
}

.service-grid article:nth-child(3) span {
  color: var(--gold);
}

.service-grid article:nth-child(4) span {
  color: var(--clay);
}

.service-grid article p {
  color: var(--muted);
}

.check-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.check-list li {
  padding: 16px 18px;
  border-left: 4px solid var(--green);
  background: var(--white);
  box-shadow: 0 8px 26px rgba(34, 41, 36, 0.08);
}

.check-list li:nth-child(2) {
  border-color: var(--cyan);
}

.check-list li:nth-child(3) {
  border-color: var(--gold);
}

.compact {
  margin-bottom: 26px;
}

.process-section {
  background: var(--white);
}

.process-list {
  width: min(1120px, 100%);
  margin: 0 auto;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.process-list li {
  min-height: 190px;
  padding: 22px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  counter-increment: step;
}

.process-list li::before {
  content: counter(step, decimal-leading-zero);
  display: block;
  margin-bottom: 22px;
  color: var(--green);
  font-weight: 900;
}

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

.process-list span {
  margin-top: 8px;
  color: var(--muted);
  font-size: 14px;
}

.rules-section {
  background: #f4f6ef;
}

.rule-row {
  width: min(1120px, 100%);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
}

.rule-row span {
  padding: 10px 16px;
  border: 1px solid var(--line);
  background: var(--white);
  color: #30362f;
}

.site-footer {
  display: flex;
  justify-content: flex-start;
  align-items: center;
  gap: 16px;
  padding: 22px clamp(20px, 5vw, 72px) 96px;
  border-top: 1px solid var(--line);
  color: #7c8379;
  font-size: 13px;
}

.float-contact {
  position: fixed;
  z-index: 30;
  right: clamp(18px, 4vw, 38px);
  bottom: clamp(18px, 4vw, 36px);
  width: 76px;
  height: 76px;
  display: grid;
  place-items: center;
  gap: 0;
  border: 0;
  border-radius: 999px;
  color: var(--white);
  background: #1d7f59;
  box-shadow: var(--shadow);
  cursor: pointer;
}

.float-contact span {
  align-self: end;
  font-size: 18px;
  font-weight: 900;
}

.float-contact small {
  align-self: start;
  font-size: 12px;
  font-weight: 800;
}

.float-contact:hover,
.float-contact:focus-visible {
  background: #166c4b;
  outline: 3px solid rgba(45, 122, 82, 0.24);
}

.contact-panel {
  position: fixed;
  z-index: 31;
  right: clamp(18px, 4vw, 38px);
  bottom: 122px;
  width: min(330px, calc(100vw - 36px));
  padding: 20px;
  border: 1px solid var(--line);
  background: var(--white);
  box-shadow: var(--shadow);
}

.contact-panel strong {
  display: block;
  margin-bottom: 4px;
  font-size: 20px;
}

.contact-panel p {
  margin-bottom: 14px;
  color: var(--muted);
  font-size: 14px;
}

.contact-panel img {
  display: block;
  width: 100%;
  border: 1px solid var(--line);
}

.panel-close {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 28px;
  height: 28px;
  border: 1px solid var(--line);
  background: var(--paper);
  cursor: pointer;
  font-size: 18px;
  line-height: 1;
}

@media (max-width: 1020px) {
  .service-grid,
  .process-list {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 760px) {
  .site-header {
    padding: 14px 18px;
  }

  .site-nav {
    display: none;
  }

  .hero {
    min-height: 84vh;
  }

  .hero-content {
    margin-left: 20px;
    padding-right: 20px;
  }

  .intro-grid,
  .split-section,
  .split-section.reverse,
  .service-grid,
  .process-list {
    grid-template-columns: 1fr;
  }

  .split-section.reverse .section-copy {
    order: initial;
  }

  .section-heading {
    text-align: left;
  }

  .plain-list {
    border-left: 0;
    padding-left: 0;
  }

  .float-contact {
    width: 68px;
    height: 68px;
  }

  .site-footer {
    padding: 22px 20px 112px;
  }
}