@charset "UTF-8";
/* ==========================================================================
   地坪工程企业站 · 全站样式
   设计取向：工业 B2B，克制、可信、信息密度高，移动端优先可读
   ========================================================================== */

:root {
  --c-bg: #ffffff;
  --c-bg-alt: #f4f7fa;
  --c-surface: #ffffff;
  --c-ink: #16212b;
  --c-ink-2: #3f4d5a;
  --c-ink-3: #6d7a87;
  --c-line: #e3e9ef;
  --c-line-strong: #cfd9e3;
  --c-brand: #14548c;
  --c-brand-dark: #0d3d68;
  --c-brand-soft: #eaf2fa;
  --c-accent: #dd7a17;
  --c-accent-soft: #fdf2e4;
  --radius: 10px;
  --radius-sm: 6px;
  --shadow-sm: 0 1px 2px rgba(16, 32, 48, .06);
  --shadow: 0 6px 20px rgba(16, 32, 48, .09);
  --wrap: 1160px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC",
    "Noto Sans CJK SC", sans-serif;
}

/* ---------------------------------------------------------------- 基础重置 */

*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--c-ink-2);
  background: var(--c-bg);
}

h1, h2, h3, h4 {
  color: var(--c-ink);
  line-height: 1.35;
  margin: 0 0 .6em;
  font-weight: 700;
}

h1 { font-size: clamp(1.6rem, 1.15rem + 1.7vw, 2.3rem); }
h2 { font-size: clamp(1.28rem, 1.1rem + .9vw, 1.7rem); }
h3 { font-size: 1.12rem; }

p { margin: 0 0 1em; }

a { color: var(--c-brand); text-decoration: none; }
a:hover { color: var(--c-brand-dark); text-decoration: underline; }

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

ul, ol { padding-left: 1.25em; }

strong { color: var(--c-ink); }

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--c-accent);
  outline-offset: 2px;
  border-radius: 4px;
}

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 20px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
  padding: 10px 18px;
  background: var(--c-brand);
  color: #fff;
  border-radius: 0 0 var(--radius-sm) 0;
}
.skip-link:focus { left: 0; color: #fff; text-decoration: none; }

/* ---------------------------------------------------------------- 按钮 */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .4em;
  padding: .72em 1.5em;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: .97rem;
  font-weight: 600;
  line-height: 1.2;
  cursor: pointer;
  transition: background .18s, border-color .18s, color .18s, transform .18s;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }

.btn--primary {
  background: var(--c-accent);
  color: #fff;
  box-shadow: 0 4px 12px rgba(221, 122, 23, .28);
}
.btn--primary:hover { background: #c96c10; color: #fff; }

.btn--ghost {
  background: transparent;
  color: var(--c-brand);
  border-color: var(--c-line-strong);
}
.btn--ghost:hover {
  background: var(--c-brand-soft);
  border-color: var(--c-brand);
  color: var(--c-brand-dark);
}

/* ---------------------------------------------------------------- 顶部信息条 */

.topbar {
  background: var(--c-ink);
  color: #c3ced8;
  font-size: .84rem;
}
.topbar .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 22px;
  padding-top: 8px;
  padding-bottom: 8px;
}
.topbar a { color: #fff; }
.topbar a:hover { color: #fff; text-decoration: underline; }

/* ---------------------------------------------------------------- 页头与导航 */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: #fff;
  border-bottom: 1px solid var(--c-line);
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 68px;
}

.brand { display: flex; align-items: center; gap: 10px; }
.brand:hover { text-decoration: none; }

.brand__mark {
  flex: 0 0 auto;
  width: 38px;
  height: 38px;
  border-radius: 9px;
  background: linear-gradient(140deg, var(--c-brand), var(--c-brand-dark));
  color: #fff;
  font-size: 1.15rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.brand__text {
  font-size: 1.12rem;
  font-weight: 700;
  color: var(--c-ink);
  letter-spacing: .01em;
}

.site-nav ul {
  display: flex;
  gap: 4px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-nav a {
  display: block;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  color: var(--c-ink-2);
  font-size: .96rem;
  font-weight: 500;
  transition: background .16s, color .16s;
}
.site-nav a:hover {
  background: var(--c-bg-alt);
  color: var(--c-brand);
  text-decoration: none;
}
.site-nav a.is-active {
  background: var(--c-brand-soft);
  color: var(--c-brand);
  font-weight: 600;
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  padding: 8px 14px;
  background: #fff;
  border: 1px solid var(--c-line-strong);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: .92rem;
  color: var(--c-ink);
  cursor: pointer;
}
.nav-toggle__bars,
.nav-toggle__bars::before,
.nav-toggle__bars::after {
  display: block;
  width: 16px;
  height: 2px;
  background: var(--c-ink);
}
.nav-toggle__bars { position: relative; }
.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
}
.nav-toggle__bars::before { top: -5px; }
.nav-toggle__bars::after { top: 5px; }

/* ---------------------------------------------------------------- 面包屑 */

.breadcrumb {
  background: var(--c-bg-alt);
  border-bottom: 1px solid var(--c-line);
  font-size: .86rem;
}
.breadcrumb .wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-top: 12px;
  padding-bottom: 12px;
}
.breadcrumb a { color: var(--c-ink-3); }
.breadcrumb a:hover { color: var(--c-brand); }
.breadcrumb [aria-current] { color: var(--c-ink-2); }
.breadcrumb__sep { color: var(--c-line-strong); }

/* ---------------------------------------------------------------- 首页首屏 */

.hero {
  position: relative;
  overflow: hidden;
  color: #e8f1fa;
  background: linear-gradient(160deg, #0c3a63 0%, #14548c 58%, #1d6fae 100%);
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, .045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .045) 1px, transparent 1px);
  background-size: 46px 46px;
  pointer-events: none;
}
.hero__inner {
  position: relative;
  z-index: 1;
  max-width: 920px;
  padding-top: 70px;
  padding-bottom: 66px;
}
.hero__eyebrow {
  display: inline-block;
  margin: 0 0 14px;
  padding: 4px 13px;
  border: 1px solid rgba(255, 255, 255, .35);
  border-radius: 999px;
  font-size: .82rem;
  letter-spacing: .06em;
  color: #cfe3f5;
}
.hero h1 { color: #fff; margin-bottom: .5em; }
.hero__lead {
  max-width: 720px;
  margin-bottom: 22px;
  font-size: 1.05rem;
  color: #d3e4f4;
}
.hero__points {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  max-width: 660px;
  margin: 0 0 30px;
  padding: 0;
  list-style: none;
}
.hero__points li {
  position: relative;
  padding-left: 24px;
  font-size: .95rem;
  color: #dcebf8;
}
.hero__points li::before {
  content: "✓";
  position: absolute;
  left: 0;
  font-weight: 700;
  color: #7fc4f5;
}
.hero__actions { display: flex; flex-wrap: wrap; gap: 14px; }
.hero .btn--ghost {
  color: #eaf2fa;
  border-color: rgba(255, 255, 255, .45);
}
.hero .btn--ghost:hover {
  background: rgba(255, 255, 255, .14);
  border-color: #fff;
  color: #fff;
}

/* ---------------------------------------------------------------- 区块 */

.section { padding: 56px 0; }
.section--alt {
  background: var(--c-bg-alt);
  border-top: 1px solid var(--c-line);
  border-bottom: 1px solid var(--c-line);
}

.section__head { max-width: 760px; margin-bottom: 28px; }
.section__head h2 { margin-bottom: .3em; }
.section__head p { margin: 0; font-size: .98rem; color: var(--c-ink-3); }
.section__more { margin: 26px 0 0; font-weight: 600; }

.page-head { margin-bottom: 28px; }
.page-head h1 { margin-bottom: .4em; }
.page-head__lead {
  max-width: 780px;
  margin: 0;
  font-size: 1.02rem;
  color: var(--c-ink-2);
}

.article { max-width: 820px; }

.h2-block {
  margin: 38px 0 16px;
  padding-left: 14px;
  border-left: 4px solid var(--c-accent);
  font-size: 1.24rem;
}

/* ---------------------------------------------------------------- 栅格与卡片 */

.grid { display: grid; gap: 20px; }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.card {
  padding: 22px;
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: border-color .2s, box-shadow .2s, transform .2s;
}
.card--link:hover {
  border-color: var(--c-brand);
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}
.card h3 { margin-bottom: .5em; font-size: 1.08rem; }
.card h3 a { color: var(--c-ink); }
.card h3 a:hover { color: var(--c-brand); text-decoration: none; }
.card p { margin-bottom: .6em; font-size: .94rem; color: var(--c-ink-2); }
.card p:last-child { margin-bottom: 0; }
.card__meta { font-size: .88rem !important; font-weight: 600; color: var(--c-accent) !important; }

/* ---------------------------------------------------------------- 服务区域列表 */

.area-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.area-list a {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 18px 20px;
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-left: 3px solid var(--c-brand);
  border-radius: var(--radius-sm);
  transition: border-color .18s, background .18s, transform .18s;
}
.area-list a:hover {
  background: var(--c-bg-alt);
  border-left-color: var(--c-accent);
  transform: translateX(2px);
  text-decoration: none;
}
.area-list strong { font-size: 1.05rem; }
.area-list span { font-size: .9rem; line-height: 1.65; color: var(--c-ink-3); }

/* ---------------------------------------------------------------- 卖点行 */

.feature-rows {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.feature-rows li {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 20px;
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--radius-sm);
}
.feature-rows strong {
  display: flex;
  align-items: center;
  gap: .55em;
  font-size: 1.02rem;
}
.feature-rows strong::before {
  content: "";
  flex: 0 0 auto;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--c-accent);
}
.feature-rows span { font-size: .92rem; line-height: 1.7; color: var(--c-ink-2); }

/* ---------------------------------------------------------------- 施工流程 */

.process {
  counter-reset: step;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.process li {
  counter-increment: step;
  position: relative;
  padding: 16px 18px 16px 62px;
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--radius-sm);
}
.process li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 16px;
  top: 16px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--c-brand);
  color: #fff;
  font-size: .8rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}
.process strong { display: block; margin-bottom: 2px; }
.process span { font-size: .9rem; color: var(--c-ink-3); }

/* ---------------------------------------------------------------- 问答 */

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

.faq {
  overflow: hidden;
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--radius-sm);
}
.faq summary {
  position: relative;
  padding: 14px 46px 14px 18px;
  font-weight: 600;
  color: var(--c-ink);
  cursor: pointer;
  list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  position: absolute;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.35rem;
  line-height: 1;
  color: var(--c-brand);
}
.faq[open] summary {
  background: var(--c-brand-soft);
  border-bottom: 1px solid var(--c-line);
}
.faq[open] summary::after { content: "−"; }
.faq__body { padding: 14px 18px; }
.faq__body p { margin: 0; font-size: .94rem; color: var(--c-ink-2); }

/* ---------------------------------------------------------------- 直接答案框 */

.answer-box {
  margin: 0 0 24px;
  padding: 18px 22px;
  background: var(--c-brand-soft);
  border-left: 4px solid var(--c-brand);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}
.answer-box__label {
  display: inline-block;
  margin: 0 0 .4em;
  font-size: .76rem;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--c-brand);
}
.answer-box p:last-child {
  margin: 0;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--c-ink);
}

/* ---------------------------------------------------------------- 关键数据 */

.keyfacts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin: 0 0 24px;
}
.keyfacts > div {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 14px 18px;
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--radius-sm);
}
.keyfacts span { font-size: .82rem; color: var(--c-ink-3); }
.keyfacts strong { font-size: 1.12rem; color: var(--c-accent); }

/* ---------------------------------------------------------------- 表格 */

.table-wrap {
  margin: 0 0 26px;
  overflow-x: auto;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-sm);
}
.table-wrap table {
  width: 100%;
  min-width: 520px;
  border-collapse: collapse;
  font-size: .93rem;
}
.table-wrap caption {
  caption-side: top;
  padding: 12px 16px;
  background: var(--c-bg-alt);
  border-bottom: 1px solid var(--c-line);
  text-align: left;
  font-weight: 700;
  color: var(--c-ink);
}
.table-wrap th,
.table-wrap td {
  padding: 10px 16px;
  border-bottom: 1px solid var(--c-line);
  text-align: left;
  vertical-align: top;
}
.table-wrap thead th {
  background: var(--c-brand);
  color: #fff;
  font-weight: 600;
  white-space: nowrap;
}
.table-wrap tbody th {
  background: var(--c-bg-alt);
  font-weight: 600;
  white-space: nowrap;
}
.table-wrap tbody tr:last-child th,
.table-wrap tbody tr:last-child td { border-bottom: 0; }
.table-wrap tbody tr:hover td { background: #fafcfe; }

/* ---------------------------------------------------------------- 标签与清单 */

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0 0 26px;
  padding: 0;
  list-style: none;
}
.tag-list li {
  padding: 6px 16px;
  background: var(--c-brand-soft);
  border: 1px solid #d3e4f3;
  border-radius: 999px;
  font-size: .9rem;
  color: var(--c-brand-dark);
}

.note-list {
  display: grid;
  gap: 10px;
  margin: 0 0 26px;
  padding: 0;
  list-style: none;
}
.note-list li {
  position: relative;
  padding-left: 26px;
  font-size: .95rem;
  line-height: 1.75;
}
.note-list li::before {
  content: "";
  position: absolute;
  left: 6px;
  top: .62em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--c-accent);
}

/* ---------------------------------------------------------------- 提示框 */

.callout {
  margin: 0 0 26px;
  padding: 16px 20px;
  background: var(--c-accent-soft);
  border: 1px solid #f3dcc0;
  border-radius: var(--radius-sm);
}
.callout__label {
  margin: 0 0 .3em;
  font-size: .88rem;
  font-weight: 700;
  color: #a35a08;
}
.callout p:last-child { margin: 0; font-size: .94rem; color: var(--c-ink-2); }

/* ---------------------------------------------------------------- 相关链接 */

.related {
  margin-top: 32px;
  padding: 20px 24px;
  background: var(--c-bg-alt);
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
}
.related h2 { margin-bottom: .6em; font-size: 1.05rem; }
.related ul {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.related li { position: relative; padding-left: 16px; }
.related li::before {
  content: "›";
  position: absolute;
  left: 0;
  font-weight: 700;
  color: var(--c-accent);
}
.related li a { font-size: .94rem; }

/* ---------------------------------------------------------------- 联系方式表 */

.contact-list {
  display: grid;
  margin: 0 0 26px;
  padding: 0;
  overflow: hidden;
  list-style: none;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-sm);
}
.contact-list li {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--c-line);
}
.contact-list li:last-child { border-bottom: 0; }
.contact-list strong {
  flex: 0 0 84px;
  font-size: .9rem;
  font-weight: 600;
  color: var(--c-ink-3);
}
.contact-list a,
.contact-list span { font-size: .98rem; color: var(--c-ink); }

/* ---------------------------------------------------------------- 转化条 */

.cta-band {
  background: var(--c-brand-soft);
  border-top: 1px solid #d3e4f3;
}
.cta-band__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding-top: 38px;
  padding-bottom: 38px;
}
.cta-band h2 { margin-bottom: .25em; font-size: 1.3rem; }
.cta-band p { margin: 0; font-size: .96rem; color: var(--c-ink-2); }
.cta-band__actions { display: flex; flex-wrap: wrap; gap: 12px; }

/* ---------------------------------------------------------------- 页脚 */

.site-footer {
  background: #101c26;
  color: #a9b6c2;
  font-size: .9rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 32px;
  padding-top: 48px;
  padding-bottom: 32px;
}
.footer-col__title {
  margin: 0 0 .8em;
  font-size: 1rem;
  color: #fff;
}
.footer-col p { margin: 0 0 .5em; line-height: 1.7; }
.footer-col ul {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.footer-col li { line-height: 1.6; }
.footer-col a { color: #c6d2dd; }
.footer-col a:hover { color: #fff; }

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 20px;
  padding-top: 18px;
  padding-bottom: 26px;
  border-top: 1px solid #22313e;
  font-size: .84rem;
}
.footer-bottom p { margin: 0; }
.footer__icp a { color: #8b98a5; }

/* ---------------------------------------------------------------- 响应式 */

@media (max-width: 1080px) {
  .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 900px) {
  .nav-toggle { display: inline-flex; }
  .site-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    display: none;
    background: #fff;
    border-bottom: 1px solid var(--c-line);
    box-shadow: var(--shadow);
  }
  .site-nav.is-open { display: block; }
  .site-nav ul {
    flex-direction: column;
    gap: 0;
    padding: 8px 12px 14px;
  }
  .site-nav a { padding: 12px 10px; }
}

@media (max-width: 860px) {
  .grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .feature-rows,
  .process,
  .area-list { grid-template-columns: 1fr; }
  .related ul { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .section { padding: 38px 0; }
  .grid--3,
  .grid--4 { grid-template-columns: 1fr; }
  .hero__inner { padding-top: 48px; padding-bottom: 44px; }
  .hero__points { grid-template-columns: 1fr; }
  .keyfacts { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 26px; }
  .cta-band__inner {
    flex-direction: column;
    align-items: flex-start;
    padding-top: 30px;
    padding-bottom: 30px;
  }
  .table-wrap table { min-width: 460px; }
  .contact-list li { flex-direction: column; gap: 2px; }
  .contact-list strong { flex: none; }
}

@media print {
  .topbar,
  .site-header,
  .cta-band,
  .site-footer,
  .skip-link { display: none; }
  .section { padding: 12px 0; }
  body { font-size: 11pt; }
}