@charset "utf-8";

/* ============================================================
   义乌市海佳网络技术工作室  全站样式
   ============================================================ */

:root {
  --brand: #1b4fd8;
  --brand-dark: #12389f;
  --brand-soft: #eaf0ff;
  --accent: #ff7a1a;
  --ink: #1b1e26;
  --ink-2: #575f6d;
  --ink-3: #8a91a0;
  --line: #e5e8ee;
  --bg: #ffffff;
  --bg-soft: #f5f7fa;
  --radius: 10px;
  --shadow: 0 6px 24px rgba(20, 30, 60, .07);
  --shadow-lg: 0 18px 48px rgba(20, 30, 60, .13);
  --maxw: 1200px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
               "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", sans-serif;
  color: var(--ink);
  background: var(--bg);
  font-size: 16px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; border: 0; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button, input, textarea, select { font-family: inherit; font-size: inherit; color: inherit; }
input, textarea { outline: none; }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.narrow { max-width: 860px; }

/* ---------- 顶部细条 ---------- */
.topbar {
  background: #14171e;
  color: #a8b0c0;
  font-size: 13px;
  line-height: 1.6;
}
.topbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 8px;
  padding-bottom: 8px;
  gap: 16px;
}
.topbar a { color: #d7dce6; }
.topbar a:hover { color: #fff; }
.topbar-right { display: flex; gap: 20px; flex-wrap: wrap; }

/* ---------- 导航 ---------- */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, .96);
  backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--line);
  transition: box-shadow .25s;
}
.header.stuck { box-shadow: 0 4px 18px rgba(20, 30, 60, .08); }
.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
  gap: 24px;
}
.brand { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.brand-mark {
  width: 42px; height: 42px;
  border-radius: 9px;
  background: var(--brand);
  color: #fff;
  font-size: 19px;
  font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  letter-spacing: 0;
}
.brand-name { font-size: 18px; font-weight: 700; letter-spacing: .5px; line-height: 1.2; }
.brand-sub { font-size: 11px; color: var(--ink-3); letter-spacing: 2px; line-height: 1.4; }

.nav-menu { display: flex; align-items: center; gap: 4px; }
.nav-item { position: relative; }
.nav-link {
  display: block;
  padding: 10px 16px;
  font-size: 15px;
  color: var(--ink);
  border-radius: 6px;
  transition: color .18s, background .18s;
  white-space: nowrap;
}
.nav-link:hover { color: var(--brand); background: var(--brand-soft); }
.nav-link.active { color: var(--brand); font-weight: 600; }
.nav-link .caret {
  display: inline-block;
  width: 0; height: 0;
  margin-left: 6px;
  vertical-align: 3px;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 5px solid currentColor;
  opacity: .55;
}

.dropdown {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translate(-50%, 8px);
  min-width: 210px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 8px;
  opacity: 0;
  visibility: hidden;
  transition: opacity .18s, transform .18s, visibility .18s;
}
.nav-item:hover .dropdown { opacity: 1; visibility: visible; transform: translate(-50%, 0); }
.dropdown::before {
  content: "";
  position: absolute;
  top: -14px; left: 0; right: 0; height: 14px;
}
.dropdown a {
  display: block;
  padding: 10px 14px;
  font-size: 14.5px;
  border-radius: 6px;
  color: var(--ink-2);
  line-height: 1.6;
}
.dropdown a small { display: block; font-size: 12px; color: var(--ink-3); }
.dropdown a:hover { background: var(--brand-soft); color: var(--brand); }
.dropdown a.on { color: var(--brand); font-weight: 600; }

code {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: .9em;
  background: #f0f2f7;
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 1px 6px;
  color: #c0392b;
}

.nav-cta {
  display: inline-block;
  padding: 10px 22px;
  background: var(--brand);
  color: #fff;
  border-radius: 6px;
  font-size: 15px;
  font-weight: 600;
  transition: background .18s, transform .18s;
  white-space: nowrap;
}
.nav-cta:hover { background: var(--brand-dark); transform: translateY(-1px); }

.nav-toggle {
  display: none;
  width: 44px; height: 44px;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 6px;
  cursor: pointer;
  padding: 0;
  position: relative;
}
.nav-toggle span {
  position: absolute;
  left: 12px; right: 12px;
  height: 2px;
  background: var(--ink);
  transition: transform .22s, opacity .22s, top .22s;
}
.nav-toggle span:nth-child(1) { top: 15px; }
.nav-toggle span:nth-child(2) { top: 21px; }
.nav-toggle span:nth-child(3) { top: 27px; }
.nav-toggle.on span:nth-child(1) { top: 21px; transform: rotate(45deg); }
.nav-toggle.on span:nth-child(2) { opacity: 0; }
.nav-toggle.on span:nth-child(3) { top: 21px; transform: rotate(-45deg); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-block;
  padding: 13px 30px;
  border-radius: 6px;
  font-size: 15.5px;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all .2s;
  text-align: center;
}
.btn-primary { background: var(--brand); color: #fff; }
.btn-primary:hover { background: var(--brand-dark); transform: translateY(-2px); box-shadow: 0 8px 20px rgba(27, 79, 216, .28); }
.btn-ghost { border-color: rgba(255, 255, 255, .6); color: #fff; }
.btn-ghost:hover { background: rgba(255, 255, 255, .14); border-color: #fff; }
.btn-outline { border-color: var(--brand); color: var(--brand); background: #fff; }
.btn-outline:hover { background: var(--brand); color: #fff; }
.btn-block { display: block; width: 100%; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 560px;
  display: flex;
  align-items: center;
  background-size: cover;
  background-position: center;
  color: #fff;
  overflow: hidden;
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(12, 18, 34, .88) 0%, rgba(12, 18, 34, .62) 55%, rgba(12, 18, 34, .38) 100%);
}
.hero .container { position: relative; z-index: 2; }
.hero-inner { max-width: 660px; padding: 90px 0; }
.eyebrow {
  display: inline-block;
  font-size: 13px;
  letter-spacing: 3px;
  color: #ffc48a;
  margin-bottom: 18px;
  font-weight: 600;
}
.hero-title {
  font-size: 46px;
  line-height: 1.28;
  font-weight: 700;
  margin-bottom: 20px;
  letter-spacing: .5px;
}
.hero-desc {
  font-size: 17px;
  color: rgba(255, 255, 255, .82);
  margin-bottom: 32px;
  max-width: 560px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-note { margin-top: 26px; font-size: 13.5px; color: rgba(255, 255, 255, .62); }

/* ---------- 页头（内页） ---------- */
.pagehead {
  position: relative;
  padding: 78px 0 68px;
  background-size: cover;
  background-position: center;
  color: #fff;
}
.pagehead::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(12, 18, 34, .9), rgba(12, 18, 34, .58));
}
.pagehead .container { position: relative; z-index: 2; }
.pagehead h1 { font-size: 38px; font-weight: 700; margin-bottom: 14px; letter-spacing: .5px; }
.pagehead p { font-size: 16px; color: rgba(255, 255, 255, .8); max-width: 620px; }

.crumb {
  background: var(--bg-soft);
  border-bottom: 1px solid var(--line);
  font-size: 13.5px;
  color: var(--ink-3);
}
.crumb .container { padding-top: 12px; padding-bottom: 12px; }
.crumb a { color: var(--ink-2); }
.crumb a:hover { color: var(--brand); }
.crumb .sep { margin: 0 8px; color: #c3c8d2; }

/* ---------- 区块 ---------- */
.section { padding: 88px 0; }
.section-soft { background: var(--bg-soft); }
.section-head { max-width: 720px; margin: 0 auto 52px; text-align: center; }
.section-head.left { margin-left: 0; text-align: left; }
.tag {
  display: inline-block;
  font-size: 12.5px;
  letter-spacing: 2.5px;
  color: var(--brand);
  font-weight: 700;
  margin-bottom: 14px;
}
.section-title { font-size: 32px; font-weight: 700; line-height: 1.4; margin-bottom: 16px; letter-spacing: .5px; }
.section-sub { font-size: 16px; color: var(--ink-2); }
.section-head.left .section-sub { max-width: 640px; }

/* ---------- 网格与卡片 ---------- */
.grid { display: grid; gap: 28px; }
.g2 { grid-template-columns: repeat(2, 1fr); }
.g3 { grid-template-columns: repeat(3, 1fr); }
.g4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform .25s, box-shadow .25s;
}
.card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); }
.card-img { position: relative; overflow: hidden; aspect-ratio: 16 / 10; background: var(--bg-soft); }
.card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.card:hover .card-img img { transform: scale(1.06); }
.card-body { padding: 24px 24px 28px; }
.card-title { font-size: 19px; font-weight: 700; margin-bottom: 10px; line-height: 1.5; }
.card-text { font-size: 15px; color: var(--ink-2); }
.card-more {
  display: inline-block;
  margin-top: 16px;
  font-size: 14.5px;
  color: var(--brand);
  font-weight: 600;
}
.card-more:hover { color: var(--brand-dark); }
.card-more::after { content: " →"; }

/* 带编号的特色卡 */
.feature {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: border-color .2s, box-shadow .25s;
}
.feature:hover { border-color: #c9d5f5; box-shadow: var(--shadow); }
.feature-no {
  font-size: 30px;
  font-weight: 700;
  color: #d3dcf5;
  line-height: 1;
  margin-bottom: 14px;
  letter-spacing: 1px;
}
.feature h3 { font-size: 19px; margin-bottom: 10px; font-weight: 700; }
.feature p { font-size: 15px; color: var(--ink-2); }

/* ---------- 数据条 ---------- */
.stats {
  background: var(--brand);
  color: #fff;
  padding: 56px 0;
}
.stats .grid { gap: 20px; }
.stat { text-align: center; }
.stat-num { font-size: 40px; font-weight: 700; line-height: 1.2; }
.stat-num .unit { font-size: 18px; font-weight: 600; margin-left: 3px; }
.stat-label { font-size: 14px; color: rgba(255, 255, 255, .78); margin-top: 6px; }

/* ---------- 图文左右块 ---------- */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}
.split-img { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.split-img img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.split-rev .split-img { order: 2; }
.split-body h2 { font-size: 30px; font-weight: 700; line-height: 1.45; margin-bottom: 18px; }
.split-body p { color: var(--ink-2); margin-bottom: 14px; }
.split-body .btn { margin-top: 14px; }

/* 列表勾选 */
.checklist { margin-top: 22px; }
.checklist li {
  position: relative;
  padding-left: 26px;
  margin-bottom: 12px;
  font-size: 15.5px;
  color: var(--ink-2);
}
.checklist li::before {
  content: "";
  position: absolute;
  left: 4px; top: 12px;
  width: 8px; height: 8px;
  border-radius: 2px;
  background: var(--brand);
  transform: rotate(45deg);
}
.nolist li { padding-left: 24px; }
.nolist li::before {
  width: 7px; height: 7px;
  background: #b9bfcc;
  border-radius: 50%;
  transform: none;
  top: 14px;
}

/* ---------- 服务行 ---------- */
.svc-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 52px;
  align-items: center;
  padding: 46px 0;
  border-top: 1px solid var(--line);
}
.svc-row:last-child { border-bottom: 1px solid var(--line); }
.svc-row:nth-child(even) .svc-pic { order: 2; }
.svc-pic { border-radius: var(--radius); overflow: hidden; }
.svc-pic img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.svc-tag { font-size: 13px; color: var(--accent); font-weight: 700; letter-spacing: 1px; }
.svc-row h3 { font-size: 26px; font-weight: 700; margin: 10px 0 14px; }
.svc-row h3 span { font-size: 15px; font-weight: 600; color: var(--brand); margin-left: 12px; }
.svc-row p { color: var(--ink-2); margin-bottom: 18px; }

/* ---------- 案例 ---------- */
.case-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 30px; }
.case-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: #fff;
  transition: box-shadow .25s, transform .25s;
}
.case-item:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.case-thumb { position: relative; aspect-ratio: 3 / 2; overflow: hidden; background: var(--bg-soft); }
.case-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.case-item:hover .case-thumb img { transform: scale(1.05); }
.case-cate {
  position: absolute;
  left: 16px; top: 16px;
  background: rgba(255, 255, 255, .95);
  color: var(--brand);
  font-size: 12.5px;
  font-weight: 700;
  padding: 5px 12px;
  border-radius: 4px;
}
.case-body { padding: 26px 26px 30px; }
.case-body h3 { font-size: 20px; font-weight: 700; margin-bottom: 12px; }
.case-body p { font-size: 15px; color: var(--ink-2); }
.case-meta {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px dashed var(--line);
  font-size: 13.5px;
  color: var(--ink-3);
}
.case-meta b { color: var(--ink); font-weight: 600; }

/* 筛选 */
.filters { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; margin-bottom: 40px; }
.filter {
  padding: 8px 20px;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 30px;
  font-size: 14.5px;
  color: var(--ink-2);
  cursor: pointer;
  transition: all .18s;
}
.filter:hover { border-color: var(--brand); color: var(--brand); }
.filter.on { background: var(--brand); border-color: var(--brand); color: #fff; font-weight: 600; }

/* ---------- 流程步骤 ---------- */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.step {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 26px 32px;
  position: relative;
}
.step-no {
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 2px;
  margin-bottom: 10px;
}
.step h3 { font-size: 19px; font-weight: 700; margin-bottom: 10px; }
.step p { font-size: 15px; color: var(--ink-2); }

/* ---------- 团队 ---------- */
.team-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.member {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: #fff;
}
.member-photo { aspect-ratio: 1 / 1; overflow: hidden; background: var(--bg-soft); }
.member-photo img { width: 100%; height: 100%; object-fit: cover; filter: grayscale(12%); transition: transform .5s, filter .4s; }
.member:hover .member-photo img { transform: scale(1.04); filter: grayscale(0); }
.member-body { padding: 22px 24px 26px; }
.member-name { font-size: 18px; font-weight: 700; }
.member-role { font-size: 13.5px; color: var(--brand); margin: 4px 0 12px; font-weight: 600; }
.member-desc { font-size: 14.5px; color: var(--ink-2); }

/* ---------- 新闻 ---------- */
.news-list { display: grid; gap: 26px; }
.news-item {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 30px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: box-shadow .25s, transform .25s;
}
.news-item:hover { box-shadow: var(--shadow); transform: translateY(-3px); }
.news-pic { overflow: hidden; background: var(--bg-soft); }
.news-pic img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 4 / 3; transition: transform .5s; }
.news-item:hover .news-pic img { transform: scale(1.05); }
.news-body { padding: 26px 28px 28px 0; }
.news-date { font-size: 13px; color: var(--ink-3); }
.news-body h3 { font-size: 21px; font-weight: 700; margin: 8px 0 12px; line-height: 1.5; }
.news-body h3 a:hover { color: var(--brand); }
.news-body p { font-size: 15px; color: var(--ink-2); margin-bottom: 14px; }

/* ---------- 文章正文 ---------- */
.article { max-width: 800px; margin: 0 auto; }
.article-meta { font-size: 13.5px; color: var(--ink-3); margin-bottom: 30px; }
.article h2 { font-size: 24px; font-weight: 700; margin: 40px 0 16px; line-height: 1.5; }
.article h3 { font-size: 19px; font-weight: 700; margin: 28px 0 12px; }
.article p { font-size: 16.5px; color: #333a47; margin-bottom: 20px; }
.article p.lead { font-size: 17.5px; color: var(--ink-2); }
.article ul { margin: 0 0 22px; }
.article ul li {
  position: relative;
  padding-left: 24px;
  margin-bottom: 10px;
  font-size: 16px;
  color: #333a47;
}
.article ul li::before {
  content: "";
  position: absolute; left: 6px; top: 15px;
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--brand);
}
.article .quote {
  border-left: 3px solid var(--brand);
  background: var(--brand-soft);
  padding: 18px 22px;
  margin: 26px 0;
  font-size: 16px;
  color: #2c3546;
  border-radius: 0 6px 6px 0;
}
.article-hero { border-radius: var(--radius); overflow: hidden; margin-bottom: 34px; }
.article-hero img { width: 100%; aspect-ratio: 2 / 1; object-fit: cover; }

/* ---------- 表格 ---------- */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); }
table { width: 100%; border-collapse: collapse; background: #fff; font-size: 15px; min-width: 560px; }
th, td { padding: 15px 20px; text-align: left; border-bottom: 1px solid var(--line); }
th { background: var(--bg-soft); font-weight: 700; font-size: 14.5px; }
td { color: var(--ink-2); }
tr:last-child td { border-bottom: 0; }
td b { color: var(--brand); }

/* ---------- 联系 ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 52px; }
.info-list { margin-top: 8px; }
.info-list li { padding: 16px 0; border-bottom: 1px dashed var(--line); }
.info-list .k { font-size: 13.5px; color: var(--ink-3); display: block; margin-bottom: 2px; }
.info-list .v { font-size: 17px; font-weight: 600; }
.info-list .v small { font-size: 13.5px; font-weight: 400; color: var(--ink-3); margin-left: 8px; }

.form-box {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 34px 32px 38px;
  box-shadow: var(--shadow);
}
.form-box h3 { font-size: 22px; font-weight: 700; margin-bottom: 6px; }
.form-box .hint { font-size: 14px; color: var(--ink-3); margin-bottom: 24px; }
.field { margin-bottom: 18px; }
.field label { display: block; font-size: 14.5px; font-weight: 600; margin-bottom: 8px; }
.field label .req { color: var(--accent); }
.field input, .field textarea, .field select {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fbfcfe;
  transition: border-color .18s, background .18s;
  font-size: 15px;
}
.field input:focus, .field textarea:focus, .field select:focus {
  border-color: var(--brand);
  background: #fff;
}
.field textarea { min-height: 120px; resize: vertical; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-tip { font-size: 13px; color: var(--ink-3); margin-top: 12px; }
.form-msg {
  display: none;
  margin-top: 16px;
  padding: 12px 16px;
  border-radius: 6px;
  background: #e8f7ee;
  color: #1a7a42;
  font-size: 14.5px;
}
.form-msg.err { background: #fdecec; color: #b3261e; }
.field .err-txt { display: none; font-size: 12.5px; color: #c0392b; margin-top: 6px; }
.field.invalid input, .field.invalid textarea { border-color: #d9534f; }
.field.invalid .err-txt { display: block; }

/* ---------- CTA 条 ---------- */
.cta-bar {
  position: relative;
  background-size: cover;
  background-position: center;
  color: #fff;
  padding: 72px 0;
  text-align: center;
}
.cta-bar::after { content: ""; position: absolute; inset: 0; background: rgba(14, 22, 44, .74); }
.cta-bar .container { position: relative; z-index: 2; }
.cta-bar h2 { font-size: 32px; font-weight: 700; margin-bottom: 14px; }
.cta-bar p { color: rgba(255, 255, 255, .82); margin-bottom: 28px; font-size: 16.5px; }

/* ---------- 客户语录 ---------- */
.quotes { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.quote-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.quote-card .txt { font-size: 15.5px; color: #3a4252; line-height: 1.9; }
.quote-card .who { margin-top: 22px; padding-top: 18px; border-top: 1px solid var(--line); font-size: 14px; color: var(--ink-3); }
.quote-card .who b { display: block; color: var(--ink); font-size: 15.5px; }

/* ---------- 页脚 ---------- */
.footer {
  background: #14171e;
  color: #9aa3b4;
  font-size: 14.5px;
  margin-top: 0;
}
.footer-top { padding: 64px 0 40px; }
.footer-cols { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 40px; }
.footer h4 { color: #fff; font-size: 16px; font-weight: 700; margin-bottom: 20px; }
.footer p { margin-bottom: 14px; line-height: 1.9; }
.footer ul li { margin-bottom: 11px; }
.footer ul a { color: #9aa3b4; }
.footer ul a:hover { color: #fff; }
.footer .brand-name { color: #fff; }
.footer-contact b { color: #fff; font-size: 20px; font-weight: 700; letter-spacing: .5px; display: block; margin: 6px 0 4px; }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .1);
  padding: 20px 0;
  font-size: 13px;
  color: #737d90;
}
.footer-bottom .container { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }

/* ---------- 返回顶部 ---------- */
.totop {
  position: fixed;
  right: 26px; bottom: 30px;
  width: 46px; height: 46px;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 6px;
  cursor: pointer;
  box-shadow: var(--shadow);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; visibility: hidden;
  transition: all .25s;
  z-index: 90;
  color: var(--brand);
  font-size: 18px;
  font-weight: 700;
}
.totop.show { opacity: 1; visibility: visible; }
.totop:hover { background: var(--brand); color: #fff; border-color: var(--brand); }

/* ---------- 滚动动画 ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ---------- 404 ---------- */
.err-page { padding: 120px 0; text-align: center; }
.err-page h1 { font-size: 96px; font-weight: 700; color: var(--brand); line-height: 1; }
.err-page p { color: var(--ink-2); margin: 18px 0 30px; }

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1100px) {
  .footer-cols { grid-template-columns: 1fr 1fr; gap: 34px; }
}

@media (max-width: 980px) {
  .hero-title { font-size: 36px; }
  .split, .svc-row, .contact-grid { grid-template-columns: 1fr; gap: 32px; }
  .split-rev .split-img, .svc-row:nth-child(even) .svc-pic { order: 0; }
  .g3, .g4, .steps, .team-grid, .quotes { grid-template-columns: repeat(2, 1fr); }
  .case-grid { grid-template-columns: 1fr; }
  .nav-menu {
    display: none;
    position: absolute;
    top: 100%; left: 0; right: 0;
    background: #fff;
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow);
    flex-direction: column;
    align-items: stretch;
    padding: 10px 0 18px;
    max-height: calc(100vh - 76px);
    overflow-y: auto;
  }
  .nav-menu.open { display: flex; }
  .nav-item { width: 100%; }
  .nav-link { padding: 14px 24px; font-size: 16px; border-radius: 0; }
  .nav-cta-box { padding: 12px 24px 0; }
  .nav-cta { display: block; text-align: center; }
  .dropdown {
    position: static;
    transform: none;
    opacity: 1; visibility: visible;
    box-shadow: none;
    border: 0; border-radius: 0;
    padding: 0 0 6px 16px;
    display: none;
    min-width: 0;
    background: #fafbfe;
  }
  .nav-item.open .dropdown { display: block; }
  .dropdown a { padding: 10px 24px; }
  .nav-toggle { display: block; }
  .navbar { height: 68px; }
}

@media (max-width: 680px) {
  .section { padding: 60px 0; }
  .hero { min-height: 460px; }
  .hero-inner { padding: 64px 0; }
  .hero-title { font-size: 29px; }
  .hero-desc { font-size: 15.5px; }
  .pagehead { padding: 52px 0 46px; }
  .pagehead h1 { font-size: 27px; }
  .section-title { font-size: 25px; }
  .split-body h2, .cta-bar h2 { font-size: 24px; }
  .g2, .g3, .g4, .steps, .team-grid, .quotes, .footer-cols { grid-template-columns: 1fr; }
  .news-item { grid-template-columns: 1fr; gap: 0; }
  .news-body { padding: 22px 22px 26px; }
  .field-row { grid-template-columns: 1fr; }
  .stats { padding: 40px 0; }
  .stat-num { font-size: 32px; }
  .brand-sub { display: none; }
  .topbar-right span:nth-child(2) { display: none; }
  .err-page h1 { font-size: 64px; }
}