/* ===========================================================
   南阳智盒包装 — 站点样式表
   =========================================================== */

:root {
  --paper: #FAF7F1;
  --paper2: #F3EDE1;
  --card: #FFFFFF;
  --ink: #1A1712;
  --ink2: #4C463B;
  --ink3: #8A8271;
  --line: #E5DCCC;
  --line2: #F0EADE;
  --copper: #A9722B;
  --copper-l: #C79A5C;
  --copper-bg: #F7EFE0;
  --deep: #1F2A24;
  --red: #A63A29;
  --max: 1180px;
  --r: 3px;
  --sh: 0 1px 2px rgba(26, 23, 18, .04), 0 14px 34px -16px rgba(26, 23, 18, .16);
  --sh-lg: 0 2px 4px rgba(26, 23, 18, .04), 0 30px 60px -28px rgba(26, 23, 18, .26);
  --serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong", "SimSun", serif;
  --sans: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Noto Sans SC", system-ui, -apple-system, sans-serif;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; display: block; border: 0; }
a { color: inherit; text-decoration: none; }

/* 键盘操作时统一给一个铜色焦点框。鼠标点击不触发，不影响视觉 */
a:focus-visible, button:focus-visible, [tabindex]:focus-visible {
  outline: 2px solid var(--copper);
  outline-offset: 3px;
  border-radius: 2px;
}
button { font: inherit; cursor: pointer; }
::selection { background: var(--copper); color: #fff; }

.wrap { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 24px; }

/* ---------- 顶部条 ---------- */
.topbar {
  background: var(--deep);
  color: #CFC7B6;
  font-size: 13px;
  letter-spacing: .02em;
}
.topbar .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 38px;
  padding-top: 6px;
  padding-bottom: 6px;
}
.topbar b { color: #fff; font-weight: 600; }
.topbar a { color: var(--copper-l); }
.topbar a:hover { color: #fff; }
.topbar .tb-right { display: flex; align-items: center; gap: 18px; }
.topbar .tb-left { display: flex; align-items: center; gap: 8px; }
.topbar svg { flex: none; }

/* ---------- 头部 ---------- */
.site-head {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(250, 247, 241, .94);
  backdrop-filter: saturate(1.4) blur(12px);
  border-bottom: 1px solid var(--line2);
}
.site-head .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 74px;
}

.brand { display: flex; align-items: center; gap: 12px; flex: none; }
.brand-mark { width: 40px; height: 40px; flex: none; }
.brand-txt { display: flex; flex-direction: column; line-height: 1.15; }
.brand-name {
  font-family: var(--serif);
  font-size: 21px;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--ink);
}
.brand-sub {
  font-size: 10.5px;
  letter-spacing: .22em;
  color: var(--ink3);
  text-transform: uppercase;
  margin-top: 3px;
}

.nav { display: flex; align-items: center; gap: 4px; }
.nav a {
  position: relative;
  padding: 10px 14px;
  font-size: 15px;
  color: var(--ink2);
  border-radius: 2px;
  transition: color .18s, background .18s;
}
.nav a::after {
  content: "";
  position: absolute;
  left: 14px; right: 14px; bottom: 4px;
  height: 1.5px;
  background: var(--copper);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .24s ease;
}
.nav a:hover { color: var(--ink); }
.nav a:hover::after, .nav a[aria-current="page"]::after { transform: scaleX(1); }
.nav a[aria-current="page"] { color: var(--ink); font-weight: 600; }

.head-cta { display: flex; align-items: center; gap: 10px; flex: none; }

.burger {
  display: none;
  width: 42px; height: 42px;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 2px;
  align-items: center;
  justify-content: center;
}
.burger span { display: block; width: 18px; height: 1.5px; background: var(--ink); position: relative; }
.burger span::before, .burger span::after {
  content: ""; position: absolute; left: 0; width: 18px; height: 1.5px; background: var(--ink);
}
.burger span::before { top: -6px; }
.burger span::after { top: 6px; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 26px;
  background: var(--copper);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: .02em;
  border: 1px solid var(--copper);
  border-radius: var(--r);
  transition: background .18s, border-color .18s, transform .18s, box-shadow .18s;
  white-space: nowrap;
}
.btn:hover { background: #8E5C1E; border-color: #8E5C1E; transform: translateY(-1px); box-shadow: 0 10px 22px -12px rgba(169, 114, 43, .9); }
.btn.sm { padding: 9px 18px; font-size: 14px; }
.btn.ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line);
}
.btn.ghost:hover { background: #fff; border-color: var(--ink); box-shadow: none; }
.form-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.form-actions .btn { flex: 1 1 auto; padding: 11px 22px; }
.form-actions .btn.ghost { flex: 0 1 auto; }
.btn.line {
  background: transparent;
  color: var(--copper);
  border-color: var(--copper);
}
.btn.line:hover { background: var(--copper); color: #fff; }
.btn.on-deep { background: #fff; color: var(--deep); border-color: #fff; }
.btn.on-deep:hover { background: var(--copper-l); border-color: var(--copper-l); color: #241a0d; }

/* ---------- 通用区块 ---------- */
section { position: relative; }
.sec { padding: 92px 0; }
.sec.tight { padding: 64px 0; }
.sec.alt { background: var(--paper2); }
.sec.dark { background: var(--deep); color: #EDE7DA; }
.sec.dark .sec-title { color: #fff; }
.sec.dark .sec-desc { color: #B7AE9C; }
.sec.dark .eyebrow { color: var(--copper-l); }
.sec.dark .eyebrow::before { background: var(--copper-l); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--copper);
  font-weight: 600;
  margin-bottom: 18px;
}
.eyebrow::before { content: ""; width: 26px; height: 1px; background: var(--copper); }

.sec-head { max-width: 720px; margin-bottom: 52px; }
.sec-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.sec-head.center .eyebrow { justify-content: center; }

.sec-title {
  font-family: var(--serif);
  font-size: clamp(27px, 3.3vw, 38px);
  line-height: 1.35;
  font-weight: 700;
  letter-spacing: .01em;
  margin: 0 0 16px;
  color: var(--ink);
  text-wrap: balance;
}
.sec-desc { margin: 0; color: var(--ink2); font-size: 16.5px; line-height: 1.9; text-wrap: pretty; }

/* ---------- 图片占位 ---------- */
.ph {
  position: relative;
  aspect-ratio: var(--r, 4 / 3);
  display: grid;
  place-items: center;
  gap: 10px;
  background-color: #F4EEE2;
  background-image: repeating-linear-gradient(45deg, rgba(26, 23, 18, .018) 0 1px, transparent 1px 7px);
  border: 1px solid var(--line);
  border-radius: var(--r);
  overflow: hidden;
  color: #A99B81;
  font-size: 12.5px;
  letter-spacing: .1em;
  text-align: center;
}
.ph::after {
  content: "";
  position: absolute;
  inset: 10px;
  border: 1px dashed rgba(169, 114, 43, .32);
  border-radius: 2px;
  pointer-events: none;
}
.ph i {
  display: block;
  width: 26px; height: 20px;
  border: 1.5px solid #BFB49C;
  border-radius: 2px;
  position: relative;
}
.ph i::before {
  content: "";
  position: absolute;
  top: 50%; left: 50%;
  width: 8px; height: 8px;
  border: 1.5px solid #BFB49C;
  border-radius: 50%;
  transform: translate(-50%, -50%);
}
.ph span { position: relative; z-index: 1; padding: 0 12px; }
.ph.sm { font-size: 11px; }

/* 已填入实拍图的占位容器 */
.ph.has-img {
  display: block;
  border: 0;
  background: #EFE9DC;
}
.ph.has-img::after { display: none; }
.ph.has-img img {
  display: block;
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transition: transform .7s cubic-bezier(.22,.61,.36,1);
}
.prod-card:hover .ph.has-img img { transform: scale(1.04); }
.case-card:hover .ph.has-img img { transform: scale(1.04); }

/* ---------- 首页 Hero ---------- */
.hero { padding: 76px 0 88px; overflow: hidden; }
.hero .wrap {
  display: grid;
  grid-template-columns: 1.06fr .94fr;
  gap: 64px;
  align-items: center;
}
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 6px 14px 6px 8px;
  background: var(--copper-bg);
  border: 1px solid #EBDCC0;
  border-radius: 100px;
  font-size: 13px;
  color: #7E5316;
  font-weight: 600;
  margin-bottom: 26px;
}
.hero-tag em {
  font-style: normal;
  background: var(--copper);
  color: #fff;
  font-size: 11px;
  padding: 2px 9px;
  border-radius: 100px;
  letter-spacing: .06em;
}
.hero h1 {
  font-family: var(--serif);
  font-size: clamp(32px, 4.6vw, 54px);
  line-height: 1.24;
  letter-spacing: .01em;
  margin: 0 0 22px;
  font-weight: 700;
  text-wrap: balance;
}
.hero h1 b { color: var(--copper); font-weight: 700; }
.hero-lead {
  font-size: 17px;
  line-height: 1.95;
  color: var(--ink2);
  margin: 0 0 34px;
  max-width: 30em;
}
.hero-btns { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 42px; }

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--line);
  padding-top: 26px;
}
.hero-stats div { padding-right: 18px; }
.hero-stats div + div { padding-left: 22px; border-left: 1px solid var(--line); }
.hero-stats strong {
  display: block;
  font-family: var(--serif);
  font-size: 30px;
  line-height: 1.1;
  color: var(--ink);
  font-weight: 700;
}
.hero-stats strong small { font-size: 14px; margin-left: 2px; color: var(--ink2); font-family: var(--sans); font-weight: 500; }
.hero-stats span { font-size: 13px; color: var(--ink3); letter-spacing: .04em; }

.hero-visual { position: relative; }
.hero-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.hero-grid .ph:nth-child(1) { --r: 3 / 4; }
.hero-grid .ph:nth-child(2) { --r: 3 / 4; margin-top: 34px; }
.hero-grid .ph:nth-child(3) { --r: 3 / 4; margin-top: -34px; }
.hero-grid .ph:nth-child(4) { --r: 3 / 4; }

.hero-badge {
  position: absolute;
  left: -18px;
  bottom: 24px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r);
  padding: 14px 18px;
  box-shadow: var(--sh-lg);
  display: flex;
  align-items: center;
  gap: 12px;
}
.hero-badge b {
  font-family: var(--serif);
  font-size: 26px;
  color: var(--copper);
  line-height: 1;
}
.hero-badge span { font-size: 12.5px; color: var(--ink2); line-height: 1.4; }

/* ---------- 服务行业条 ---------- */
.industries {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: #fff;
  padding: 26px 0;
}
.industries .wrap {
  display: flex;
  align-items: center;
  gap: 28px;
  flex-wrap: wrap;
}
.industries .lb {
  font-size: 13px;
  color: var(--ink3);
  letter-spacing: .1em;
  flex: none;
  padding-right: 24px;
  border-right: 1px solid var(--line);
}
.industries ul {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.industries li { font-size: 14.5px; color: var(--ink2); }
.industries li::before {
  content: "";
  display: inline-block;
  width: 4px; height: 4px;
  background: var(--copper-l);
  border-radius: 50%;
  margin-right: 9px;
  vertical-align: 3px;
}

/* ---------- 产品网格 ---------- */
.prod-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}
.prod-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s;
}
.prod-card:hover { transform: translateY(-4px); box-shadow: var(--sh-lg); border-color: #D8C9AE; }
.prod-card .ph { border: 0; border-bottom: 1px solid var(--line); border-radius: 0; aspect-ratio: 16 / 10; }
.prod-body { padding: 22px 24px 26px; flex: 1; display: flex; flex-direction: column; }
.prod-body h3 {
  font-family: var(--serif);
  font-size: 20px;
  margin: 0 0 8px;
  font-weight: 700;
}
.prod-body p { margin: 0 0 16px; font-size: 14.5px; color: var(--ink2); line-height: 1.8; flex: 1; }
.tags { display: flex; flex-wrap: wrap; gap: 7px; }
.tags span {
  font-size: 12px;
  color: #7E5316;
  background: var(--copper-bg);
  border: 1px solid #EEDFC3;
  padding: 3px 9px;
  border-radius: 2px;
}

/* ---------- 优势 ---------- */
.adv-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border-top: 1px solid rgba(255, 255, 255, .14);
}
.adv {
  padding: 34px 28px 8px 0;
  border-right: 1px solid rgba(255, 255, 255, .1);
}
.adv:last-child { border-right: 0; }
.adv:not(:first-child) { padding-left: 28px; }
.adv .n {
  font-family: var(--serif);
  font-size: 13px;
  color: var(--copper-l);
  letter-spacing: .2em;
  margin-bottom: 14px;
  display: block;
}
.adv h3 { font-family: var(--serif); font-size: 19px; margin: 0 0 10px; color: #fff; }
.adv p { margin: 0; font-size: 14px; line-height: 1.85; color: #AEA595; }

/* ---------- 流程 ---------- */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; counter-reset: s; }
.step {
  position: relative;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r);
  padding: 28px 26px 30px;
  counter-increment: s;
}
.step::before {
  content: "0" counter(s);
  font-family: var(--serif);
  font-size: 34px;
  font-weight: 700;
  color: #E8DCC6;
  line-height: 1;
  display: block;
  margin-bottom: 14px;
  letter-spacing: .02em;
}
.step h3 { font-size: 17px; margin: 0 0 8px; font-family: var(--serif); font-weight: 700; }
.step p { margin: 0; font-size: 14px; color: var(--ink2); line-height: 1.8; }

/* ---------- 材料表 ---------- */
.spec-table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
  border: 1px solid var(--line);
  font-size: 14.5px;
}
.spec-table caption { text-align: left; font-size: 13px; color: var(--ink3); padding-bottom: 10px; }
.spec-table th, .spec-table td {
  text-align: left;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line2);
  vertical-align: top;
}
.spec-table thead th {
  background: var(--paper2);
  font-weight: 600;
  font-size: 13.5px;
  letter-spacing: .04em;
  color: var(--ink);
  border-bottom: 1px solid var(--line);
}
.spec-table tbody tr:last-child td { border-bottom: 0; }
.spec-table tbody tr:hover { background: #FCFAF5; }
.spec-table td:first-child { font-weight: 600; color: var(--ink); white-space: nowrap; }

/* 文章内表格：窄屏横向滚动 */
.table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; margin: 0 0 26px; }
.table-scroll .spec-table { margin: 0; min-width: 540px; }
/* 两列的小表强制 540 反而多出横向滚动，用 .narrow 关掉 */
.table-scroll.narrow .spec-table { min-width: 0; }
.prose .spec-table { margin: 0 0 26px; }
.prose .spec-table th, .prose .spec-table td { line-height: 1.7; }

/* ---------- 案例 ---------- */
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.case-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r);
  overflow: hidden;
  transition: transform .25s, box-shadow .25s;
}
.case-card:hover { transform: translateY(-4px); box-shadow: var(--sh-lg); }
.case-card .ph { border: 0; border-bottom: 1px solid var(--line); border-radius: 0; aspect-ratio: 4 / 3; }
.case-body { padding: 20px 22px 24px; }
.case-body .kicker { font-size: 12px; letter-spacing: .14em; color: var(--copper); font-weight: 600; }
.case-body h3 { font-family: var(--serif); font-size: 18px; margin: 8px 0 8px; }
.case-body p { margin: 0; font-size: 14px; color: var(--ink2); line-height: 1.8; }

/* ---------- FAQ ---------- */
.faq { border-top: 1px solid var(--line); }
.faq details {
  border-bottom: 1px solid var(--line);
  padding: 4px 0;
}
.faq summary {
  list-style: none;
  cursor: pointer;
  padding: 22px 44px 22px 0;
  position: relative;
  font-family: var(--serif);
  font-size: 17px;
  font-weight: 700;
  color: var(--ink);
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "";
  position: absolute;
  right: 6px; top: 50%;
  width: 11px; height: 11px;
  border-right: 1.5px solid var(--copper);
  border-bottom: 1.5px solid var(--copper);
  transform: translateY(-70%) rotate(45deg);
  transition: transform .25s;
}
.faq details[open] summary::after { transform: translateY(-30%) rotate(-135deg); }
.faq .ans { padding: 0 44px 24px 0; color: var(--ink2); font-size: 15px; line-height: 1.95; }
.faq .ans p { margin: 0 0 10px; }
.faq .ans p:last-child { margin-bottom: 0; }

/* ---------- 报价 CTA ---------- */
.quote {
  background:
    linear-gradient(120deg, rgba(31, 42, 36, .96), rgba(31, 42, 36, .99)),
    repeating-linear-gradient(45deg, #2A3630 0 1px, #1F2A24 1px 8px);
  color: #EDE7DA;
  border-radius: var(--r);
  padding: 52px 52px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 40px;
  align-items: center;
}
.quote h2 {
  font-family: var(--serif);
  font-size: clamp(23px, 2.6vw, 31px);
  margin: 0 0 12px;
  color: #fff;
  line-height: 1.45;
  text-wrap: balance;
}
.quote p { margin: 0; color: #B7AE9C; font-size: 15.5px; line-height: 1.85; max-width: 44em; }
.quote .qb { display: flex; flex-direction: column; gap: 12px; flex: none; }
.quote .qb small { font-size: 12.5px; color: #9B9281; text-align: center; letter-spacing: .06em; }

/* ---------- 新闻 ---------- */
.news-grid { display: grid; grid-template-columns: 1.35fr 1fr 1fr; gap: 24px; }
.news-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r);
  padding: 26px 26px 24px;
  display: flex;
  flex-direction: column;
  transition: border-color .2s, box-shadow .2s;
}
/* 整卡是链接：清掉 a 的默认蓝字与下划线，否则 h3 会继承链接色 */
a.news-card { color: inherit; text-decoration: none; }
/* 悬停反馈用边框/阴影/文字色，不用 transform——.reveal 入场动画占用了 transform */
.news-card:hover { border-color: #D8C9AE; box-shadow: var(--sh); }
.news-card:hover h3 { color: var(--copper); }
.news-card:hover .more::after { margin-left: 5px; }
/* 键盘 Tab 到卡片时给出明确轮廓，鼠标点击不显示 */
.news-card:focus-visible { outline: 2px solid var(--copper); outline-offset: 3px; border-color: var(--copper); }
.news-card time { font-size: 12.5px; color: var(--ink3); letter-spacing: .06em; }
.news-card h3 {
  font-family: var(--serif);
  font-size: 17.5px;
  margin: 10px 0 10px;
  line-height: 1.55;
  font-weight: 700;
  transition: color .2s;
}
.news-card p { margin: 0 0 18px; font-size: 14px; color: var(--ink2); line-height: 1.8; flex: 1; }
.news-card .more { font-size: 13.5px; color: var(--copper); font-weight: 600; }
.news-card .more::after { content: " →"; transition: margin .2s; }

/* 只有两篇文章时用两列，避免三列留空 */
.news-grid.two { grid-template-columns: 1fr 1fr; }
.news-grid.two .news-card h3 { font-size: 19px; }
.news-grid.two .news-card p { font-size: 14.5px; }

/* ---------- 文章页 ---------- */
.art-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 10px;
  font-size: 13px;
  color: var(--ink3);
  letter-spacing: .05em;
  margin: 14px 0 0;
}
.art-meta span:nth-child(even) { color: #C3B9A5; }

.art-more { max-width: 76ch; margin-top: 64px; padding-top: 34px; border-top: 1px solid var(--line); }
.art-more h2 { font-family: var(--serif); font-size: 17px; margin: 0 0 18px; font-weight: 700; }
.art-more ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 14px; }
.art-more li {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 17px 19px;
  border: 1px solid var(--line);
  border-radius: var(--r);
  background: #fff;
  transition: border-color .2s, box-shadow .2s;
}
.art-more li:hover { border-color: #D8C9AE; box-shadow: var(--sh); }
.art-more a { font-weight: 600; color: var(--ink); font-size: 15.5px; line-height: 1.65; }
.art-more a:hover { color: var(--copper); }
.art-more span { font-size: 13.5px; color: var(--ink3); line-height: 1.75; }

/* ---------- 页头（子页） ---------- */
.page-head {
  background: var(--paper2);
  border-bottom: 1px solid var(--line);
  padding: 54px 0 46px;
  position: relative;
  overflow: hidden;
}
.page-head::after {
  content: "";
  position: absolute;
  right: -80px; top: -80px;
  width: 340px; height: 340px;
  border: 1px solid rgba(169, 114, 43, .16);
  border-radius: 50%;
}
.page-head h1 {
  font-family: var(--serif);
  font-size: clamp(26px, 3.4vw, 38px);
  margin: 0 0 12px;
  line-height: 1.35;
  font-weight: 700;
  text-wrap: balance;
}
.page-head p { margin: 0; color: var(--ink2); max-width: 62em; font-size: 15.5px; line-height: 1.9; }

.crumb { font-size: 13px; color: var(--ink3); margin-bottom: 16px; }
.crumb a { color: var(--ink2); }
.crumb a:hover { color: var(--copper); text-decoration: underline; text-underline-offset: 3px; }
.crumb span { margin: 0 8px; color: #C3B9A5; }

/* ---------- 内容排版 ---------- */
.prose { max-width: 76ch; }
.prose h2 {
  font-family: var(--serif);
  font-size: clamp(22px, 2.6vw, 28px);
  margin: 56px 0 18px;
  line-height: 1.45;
}
.prose h2:first-child { margin-top: 0; }
.prose h3 { font-size: 18px; margin: 34px 0 12px; font-family: var(--serif); }
.prose p { margin: 0 0 18px; color: var(--ink2); font-size: 16px; line-height: 1.95; text-wrap: pretty; }
.prose ul, .prose ol { margin: 0 0 20px; padding-left: 22px; color: var(--ink2); line-height: 1.95; }
.prose li { margin-bottom: 8px; }
.prose strong { color: var(--ink); }
.prose a { color: var(--copper); border-bottom: 1px solid rgba(169, 114, 43, .35); }
.prose a:hover { border-bottom-color: var(--copper); }

.note {
  background: var(--copper-bg);
  border-left: 3px solid var(--copper);
  padding: 18px 22px;
  font-size: 14.5px;
  color: #6E4A14;
  line-height: 1.85;
  border-radius: 0 var(--r) var(--r) 0;
  margin: 26px 0;
}
.note b { color: #4E3309; }

/* 两栏 */
.split { display: grid; grid-template-columns: 1.15fr .85fr; gap: 64px; align-items: start; }
/* 网格子项默认 min-width:auto，里面的宽表格会把整页撑出横向滚动，必须显式归零 */
.split > * { min-width: 0; }
.split.rev { grid-template-columns: .85fr 1.15fr; }

/* 数据条 */
.stat-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r);
  overflow: hidden;
}
.stat-row div { background: #fff; padding: 26px 22px; }
.stat-row strong {
  display: block;
  font-family: var(--serif);
  font-size: 32px;
  line-height: 1.1;
  color: var(--copper);
  font-weight: 700;
}
.stat-row strong small { font-size: 14px; font-family: var(--sans); color: var(--ink2); font-weight: 500; margin-left: 3px; }
.stat-row span { font-size: 13.5px; color: var(--ink2); }

/* 卡片列表 */
.card-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.mini-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r);
  padding: 24px 26px;
}
.mini-card h3 { font-family: var(--serif); font-size: 17px; margin: 0 0 8px; }
.mini-card p { margin: 0; font-size: 14px; color: var(--ink2); line-height: 1.8; }
.wx-qr { margin: 14px 0 6px; display: flex; justify-content: center; }
.wx-qr img { display: block; width: 100%; max-width: 180px; height: auto; background: #fff; padding: 8px; border-radius: 10px; border: 1px solid var(--line); }

/* ---------- 表单 ---------- */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-grid .full { grid-column: 1 / -1; }
.field { display: flex; flex-direction: column; gap: 7px; }
.field label { font-size: 13.5px; color: var(--ink2); letter-spacing: .02em; }
.field label i { color: var(--red); font-style: normal; }
.field input, .field select, .field textarea {
  font: inherit;
  font-size: 15px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: var(--r);
  color: var(--ink);
  transition: border-color .18s, box-shadow .18s;
  width: 100%;
}
.field textarea { resize: vertical; min-height: 116px; line-height: 1.7; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--copper);
  box-shadow: 0 0 0 3px rgba(169, 114, 43, .12);
}
.form-tip { font-size: 12.5px; color: var(--ink3); margin: 16px 0 0; line-height: 1.7; }
.form-msg {
  display: none;
  margin-top: 16px;
  padding: 13px 16px;
  border-radius: var(--r);
  font-size: 14px;
  background: #EFF4EC;
  border: 1px solid #CBDCC2;
  color: #33502A;
}
.form-msg.show { display: block; }

/* 联系方式卡 */
.contact-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.ccard {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r);
  padding: 26px 26px 28px;
}
.ccard .k { font-size: 12px; letter-spacing: .16em; color: var(--ink3); text-transform: uppercase; margin-bottom: 12px; }
.ccard .v { font-family: var(--serif); font-size: 22px; font-weight: 700; letter-spacing: .02em; word-break: break-all; }
.ccard .v a:hover { color: var(--copper); }
.ccard .d { font-size: 13.5px; color: var(--ink2); margin-top: 8px; line-height: 1.7; }

/* ---------- 页脚 ---------- */
.site-foot { background: var(--deep); color: #A79E8D; font-size: 14px; padding: 62px 0 0; }
.foot-top { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.2fr; gap: 44px; padding-bottom: 46px; }
.site-foot .foot-h { color: #fff; font-size: 14px; letter-spacing: .1em; margin: 0 0 18px; font-weight: 600; line-height: 1.4; }
.site-foot ul { list-style: none; margin: 0; padding: 0; }
.site-foot li { margin-bottom: 10px; }
.site-foot a:hover { color: var(--copper-l); }
.foot-brand { display: flex; align-items: center; gap: 12px; margin-bottom: 18px; }
.foot-brand .brand-name { color: #fff; font-size: 19px; }
.foot-brand .brand-sub { color: #7C7565; }
.site-foot .about { line-height: 1.9; font-size: 13.5px; color: #928A7A; max-width: 30em; }
.site-foot .tel-big {
  font-family: var(--serif);
  font-size: 24px;
  color: #fff;
  letter-spacing: .02em;
  display: block;
  margin-bottom: 6px;
}
.foot-bot {
  border-top: 1px solid rgba(255, 255, 255, .1);
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  font-size: 12.5px;
  color: #7C7565;
}
.foot-bot a:hover { color: var(--copper-l); }

/* ---------- 移动端底部咨询条 ---------- */
.mobile-bar {
  display: none;
  position: fixed;
  left: 0; right: 0; bottom: 0;
  z-index: 60;
  background: #fff;
  border-top: 1px solid var(--line);
  padding: 8px;
  gap: 8px;
  box-shadow: 0 -6px 20px -12px rgba(0, 0, 0, .3);
}
.mobile-bar a {
  flex: 1;
  text-align: center;
  padding: 12px 0;
  border-radius: 2px;
  font-size: 14.5px;
  font-weight: 600;
  border: 1px solid var(--line);
  color: var(--ink);
}
.mobile-bar a.primary { background: var(--copper); border-color: var(--copper); color: #fff; }

/* ---------- 锚点偏移（避开吸顶导航） ---------- */
[id] { scroll-margin-top: 96px; }

ul.prose { max-width: none; }

/* ---------- 动效 ---------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
  .hero .wrap { grid-template-columns: 1fr; gap: 44px; }
  .hero-visual { max-width: 560px; }
  .hero-badge { left: 0; }
  .prod-grid, .case-grid, .news-grid { grid-template-columns: repeat(2, 1fr); }
  .adv-grid { grid-template-columns: repeat(2, 1fr); }
  .adv { border-bottom: 1px solid rgba(255, 255, 255, .1); }
  .adv:nth-child(2n) { border-right: 0; }
  .adv:nth-child(2n+1) { padding-left: 0; }
  .foot-top { grid-template-columns: 1fr 1fr; gap: 34px; }
  .split, .split.rev { grid-template-columns: 1fr; gap: 40px; }
  .quote { grid-template-columns: 1fr; padding: 40px 34px; }
  .quote .qb { flex-direction: row; align-items: center; }
}

@media (max-width: 860px) {
  .nav {
    display: none;
    position: absolute;
    left: 0; right: 0; top: 100%;
    background: #fff;
    border-bottom: 1px solid var(--line);
    box-shadow: 0 18px 30px -20px rgba(0, 0, 0, .3);
    flex-direction: column;
    align-items: stretch;
    padding: 8px 16px 16px;
    gap: 0;
  }
  .nav.open { display: flex; }
  .nav a { padding: 14px 6px; border-bottom: 1px solid var(--line2); font-size: 15.5px; }
  .nav a::after { display: none; }
  .burger { display: inline-flex; }
  .head-cta .btn { display: none; }
  .site-head .wrap { position: relative; }
  .sec { padding: 64px 0; }
  .sec.tight { padding: 48px 0; }
  .sec-head { margin-bottom: 36px; }
  .hero { padding: 44px 0 56px; }
  .stat-row { grid-template-columns: repeat(2, 1fr); }
  .card-list { grid-template-columns: 1fr; }
  .contact-cards { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .topbar .tb-left { display: none; }
  .topbar .wrap { justify-content: center; }
  .mobile-bar { display: flex; }
  body { padding-bottom: 72px; }
  .quote .qb { flex-direction: column; align-items: stretch; }
}

@media (max-width: 640px) {
  .wrap { padding: 0 18px; }
  .hero-badge {
    position: static;
    margin-top: 16px;
    left: auto;
    bottom: auto;
    justify-content: center;
    box-shadow: var(--sh);
  }
  .hero-grid { gap: 10px; }
  .hero-grid .ph:nth-child(2) { margin-top: 24px; }
  .hero-grid .ph:nth-child(3) { margin-top: -24px; }
  .prod-grid, .case-grid, .news-grid, .steps { grid-template-columns: 1fr; }
  .news-grid.two { grid-template-columns: 1fr; }
  .adv-grid { grid-template-columns: 1fr; }
  .adv { padding: 26px 0 22px; border-right: 0; }
  .adv:not(:first-child) { padding-left: 0; }
  .hero-stats { grid-template-columns: 1fr; gap: 18px; }
  .hero-stats div + div { padding-left: 0; border-left: 0; padding-top: 18px; border-top: 1px solid var(--line); }
  .hero-stats div { padding-right: 0; }
  .news-grid .news-card:first-child { padding: 24px 22px; }
  .foot-top { grid-template-columns: 1fr; gap: 30px; }
  .quote { padding: 32px 24px; }
  .industries .lb { border-right: 0; padding-right: 0; width: 100%; }
  .industries ul { gap: 8px 18px; }
  .spec-table { font-size: 13.5px; }
  .spec-table th, .spec-table td { padding: 11px 12px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  * { animation: none !important; }
}