/* ============================================================
   LocalHero 官网样式 · 纸墨编辑风设计系统
   底:暖纸白 / 字:墨 / 点缀:朱砂(唯一强调色)/ 深色区:松绿
   标题衬线(宋体系),正文系统无衬线;圆角统一 2px(近直角,出版物感)
   ============================================================ */

:root {
  --paper:    #F6F3EC;   /* 纸白底 */
  --paper-2:  #EFEBE1;   /* 深一度的纸,分区用 */
  --ink:      #1D1B16;   /* 墨黑 */
  --ink-2:    #5A554A;   /* 次级文字 */
  --ink-3:    #8C8678;   /* 弱化文字 */
  --line:     #DCD6C8;   /* 细线 */
  --seal:     #A63A2B;   /* 朱砂:唯一强调色 */
  --seal-deep:#8C2F22;   /* 朱砂按下/hover */
  --pine:     #1E332C;   /* 深松绿:页脚与深色带 */
  --pine-2:   #16271F;   /* 更深一度 */
  --paper-on-dark: #EFE9DA; /* 深色区上的纸色文字 */

  --serif: "Noto Serif SC", "Source Serif 4", "Source Han Serif SC",
           "Songti SC", "SimSun", Georgia, serif;
  --sans:  -apple-system, "PingFang SC", "Hiragino Sans GB",
           "Microsoft YaHei", "Segoe UI", system-ui, sans-serif;

  --radius: 2px;
  --container: 1200px;
  --nav-h: 72px;
}

/* 日文页换明朝体回落链 */
html[lang="ja"] {
  --serif: "Noto Serif JP", "Hiragino Mincho ProN", "Yu Mincho",
           "MS PMincho", Georgia, serif;
  --sans: -apple-system, "Hiragino Kaku Gothic ProN", "Yu Gothic",
          Meiryo, "Segoe UI", system-ui, sans-serif;
}
html[lang="en"] {
  --serif: "Source Serif 4", "Noto Serif SC", Georgia, serif;
  --sans: -apple-system, "Segoe UI", Helvetica, Arial, system-ui, sans-serif;
}

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

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

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

::selection { background: var(--seal); color: var(--paper); }

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

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 32px;
}

/* ---------- 标题体系:衬线 ---------- */
h1, h2, h3, .serif {
  font-family: var(--serif);
  font-weight: 600;
  letter-spacing: 0.01em;
  line-height: 1.35;
}
h1 { font-size: clamp(34px, 5vw, 56px); line-height: 1.25; }
h2 { font-size: clamp(26px, 3.4vw, 38px); }
h3 { font-size: clamp(19px, 2vw, 23px); }

p  { color: var(--ink-2); max-width: 68ch; }

/* ============================================================
   导航
   ============================================================ */
.nav {
  position: sticky; top: 0; z-index: 50;
  height: var(--nav-h);
  background: rgba(246, 243, 236, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  max-width: var(--container); margin: 0 auto; padding: 0 32px;
  height: 100%;
  display: flex; align-items: center; justify-content: space-between;
  gap: 24px;
}
.brand {
  display: flex; align-items: center; gap: 12px;
  font-family: var(--serif); font-size: 21px; font-weight: 700;
  color: var(--ink); white-space: nowrap;
}
.brand img { height: 36px; width: auto; }
/* 临时印章标:用户上传 logo 后自动替换 */
.brand-seal {
  width: 34px; height: 34px; flex: none;
  background: var(--seal); color: var(--paper);
  border-radius: var(--radius);
  display: inline-flex; align-items: center; justify-content: center;
  font-family: var(--serif); font-size: 19px; font-weight: 700;
}
.nav-links {
  display: flex; align-items: center; gap: 34px;
  list-style: none;
}
.nav-links a {
  font-size: 15px; color: var(--ink-2);
  padding: 6px 0;
  border-bottom: 2px solid transparent;
  transition: color .2s, border-color .2s;
}
.nav-links a:hover { color: var(--ink); }
.nav-links a.active { color: var(--ink); border-bottom-color: var(--seal); }

/* 语言切换器 */
.lang-switch {
  display: flex; align-items: center;
  border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; flex: none;
}
.lang-switch a {
  font-size: 13px; padding: 5px 11px; color: var(--ink-2);
  border-right: 1px solid var(--line);
  transition: background .2s, color .2s;
}
.lang-switch a:last-child { border-right: none; }
.lang-switch a:hover { background: var(--paper-2); }
.lang-switch a.on { background: var(--ink); color: var(--paper); }

/* 移动端汉堡 */
.nav-toggle {
  display: none;
  background: none; border: 1px solid var(--line); border-radius: var(--radius);
  width: 40px; height: 40px; cursor: pointer; color: var(--ink);
  font-size: 18px; line-height: 1;
}

/* ============================================================
   按钮(唯一强调色:朱砂)
   ============================================================ */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 15px; font-weight: 600;
  padding: 13px 30px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background .2s, transform .1s, border-color .2s, color .2s;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--seal); color: #FBF8F2; }
.btn-primary:hover { background: var(--seal-deep); }
.btn-ghost { border-color: var(--ink); color: var(--ink); background: transparent; }
.btn-ghost:hover { background: var(--ink); color: var(--paper); }
/* 深色区上的按钮 */
.on-dark .btn-ghost { border-color: var(--paper-on-dark); color: var(--paper-on-dark); }
.on-dark .btn-ghost:hover { background: var(--paper-on-dark); color: var(--pine); }

/* ============================================================
   首页 Hero:左文右印,不对称分栏
   ============================================================ */
.hero {
  padding: 88px 0 96px;
  border-bottom: 1px solid var(--line);
}
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
  gap: 56px; align-items: center;
}
.hero-kicker {
  font-size: 14px; color: var(--seal); font-weight: 600;
  margin-bottom: 20px;
}
.hero p { margin: 26px 0 38px; font-size: 17px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

/* 大印章:朱砂底色 + 纸白色 LH 商标(assets/logo-paper.svg) */
.hero-seal-wrap { display: flex; justify-content: center; }
.hero-seal {
  width: clamp(180px, 22vw, 260px); height: clamp(180px, 22vw, 260px);
  background: var(--seal); color: #F3E9DC;
  border-radius: 6px;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--serif); font-weight: 700;
  font-size: clamp(96px, 12vw, 150px);
  box-shadow: 0 24px 60px rgba(166, 58, 43, 0.22);
  position: relative;
}
.hero-seal img { width: 66%; height: auto; display: block; }
.hero-seal::after {
  content: ""; position: absolute; inset: 10px;
  border: 1px solid rgba(243, 233, 220, 0.45);
  border-radius: 3px;
}

/* ============================================================
   质量指标条
   ============================================================ */
.stats {
  padding: 56px 0;
  border-bottom: 1px solid var(--line);
}
.stats-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px;
}
.stat b {
  display: block;
  font-family: var(--serif); font-weight: 700;
  font-size: clamp(30px, 3.6vw, 44px);
  color: var(--ink); line-height: 1.2;
}
.stat b .unit { font-size: 0.45em; font-weight: 600; color: var(--ink-2); margin-left: 2px; }
.stat span { font-size: 14px; color: var(--ink-2); }

/* ============================================================
   章节通用
   ============================================================ */
.section { padding: 96px 0; }
.section-alt { background: var(--paper-2); }
.section-head { margin-bottom: 56px; max-width: 720px; }
.section-head p { margin-top: 16px; }

/* ============================================================
   首页服务 2×2 网格(一格反色,打破均匀)
   ============================================================ */
.svc-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.svc-cell {
  background: var(--paper); padding: 44px 40px;
  transition: background .25s;
}
.svc-cell:hover { background: var(--paper-2); }
.svc-cell.svc-feature { background: var(--pine); }
.svc-cell.svc-feature:hover { background: var(--pine-2); }
.svc-cell.svc-feature h3, .svc-cell.svc-feature .svc-more { color: var(--paper-on-dark); }
.svc-cell.svc-feature p { color: rgba(239, 233, 218, 0.72); }
.svc-num {
  font-family: var(--serif); font-size: 15px; color: var(--seal);
  display: block; margin-bottom: 14px;
}
.svc-cell h3 { margin-bottom: 12px; }
.svc-cell p { font-size: 15px; }
.svc-more {
  display: inline-block; margin-top: 18px;
  font-size: 14px; font-weight: 600; color: var(--ink);
  border-bottom: 1px solid var(--seal);
  padding-bottom: 2px;
}

/* ============================================================
   案例卡:1 大 + 2 小不对称
   ============================================================ */
.case-grid {
  display: grid; grid-template-columns: 5fr 4fr; gap: 28px;
}
.case-side { display: grid; gap: 28px; }
.case-card {
  border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--paper); overflow: hidden;
  display: flex; flex-direction: column;
  transition: transform .25s, box-shadow .25s;
}
.case-card:hover { transform: translateY(-3px); box-shadow: 0 16px 40px rgba(29, 27, 22, 0.08); }
.case-visual {
  display: flex; align-items: center; justify-content: center;
  font-family: var(--serif); font-weight: 700;
  min-height: 180px; font-size: 64px;
}
.case-card.lg .case-visual { min-height: 320px; font-size: 96px; }
.case-visual.v-pine  { background: var(--pine);  color: var(--paper-on-dark); }
.case-visual.v-seal  { background: var(--seal);  color: #F3E9DC; }
.case-visual.v-paper { background: var(--paper-2); color: var(--ink-2); }
.case-body { padding: 26px 28px 30px; }
.case-tag  { font-size: 13px; color: var(--seal); font-weight: 600; }
.case-body h3 { margin: 8px 0 10px; }
.case-body p  { font-size: 15px; }
.case-metric {
  margin-top: 16px; padding-top: 16px; border-top: 1px solid var(--line);
  font-size: 14px; color: var(--ink-2);
}
.case-metric b { font-family: var(--serif); font-size: 20px; color: var(--ink); margin-right: 6px; }

/* ============================================================
   客户墙
   ============================================================ */
.client-wall {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px;
}
.client-item {
  border: 1px solid var(--line); border-radius: var(--radius);
  min-height: 88px; padding: 12px;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--serif); font-size: 17px; font-weight: 600;
  color: var(--ink-2); text-align: center;
  background: var(--paper);
}
.client-item.pending {
  border-style: dashed; color: var(--ink-3);
  font-family: var(--sans); font-size: 13px; font-weight: 400;
}

/* ============================================================
   CTA 深色带 + 页脚
   ============================================================ */
.cta-band { background: var(--pine); color: var(--paper-on-dark); padding: 88px 0; }
.cta-band h2 { color: var(--paper-on-dark); max-width: 620px; }
.cta-band p { color: rgba(239, 233, 218, 0.7); margin: 18px 0 36px; }

.footer {
  background: var(--pine-2); color: rgba(239, 233, 218, 0.65);
  padding: 64px 0 40px; font-size: 14px;
}
.footer a:hover { color: var(--paper-on-dark); }
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1.4fr; gap: 48px;
  padding-bottom: 44px; border-bottom: 1px solid rgba(239, 233, 218, 0.15);
}
.footer .brand { color: var(--paper-on-dark); margin-bottom: 14px; }
.footer h4 {
  font-size: 13px; font-weight: 600; color: var(--paper-on-dark);
  letter-spacing: 0.08em; margin-bottom: 16px;
}
.footer ul { list-style: none; display: grid; gap: 10px; }
.footer-meta {
  padding-top: 28px; display: flex; flex-wrap: wrap; gap: 8px 28px;
  font-size: 13px; color: rgba(239, 233, 218, 0.45);
}

/* ============================================================
   服务详情页:交替分栏(最多两次)+ 全宽流程带
   ============================================================ */
.svc-detail {
  display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  gap: 64px; align-items: start;
  padding: 72px 0; border-bottom: 1px solid var(--line);
}
.svc-detail.flip > .svc-detail-text { order: 2; }
.svc-detail:last-of-type { border-bottom: none; }
.svc-detail-text h2 { margin-bottom: 18px; }
.svc-detail-text p { margin-bottom: 14px; font-size: 15.5px; }
.svc-points { list-style: none; display: grid; gap: 12px; margin-top: 22px; }
.svc-points li {
  padding-left: 22px; position: relative; font-size: 15px; color: var(--ink-2);
}
.svc-points li::before {
  content: ""; position: absolute; left: 0; top: 0.62em;
  width: 10px; height: 10px; background: var(--seal); border-radius: 1px;
}
.svc-panel {
  border-radius: var(--radius); min-height: 320px;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--serif); font-weight: 700; font-size: 110px;
}

/* 流程:横向四步 */
.flow-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 36px; }
.flow-item { border-top: 2px solid var(--seal); padding-top: 20px; }
.flow-item h3 { font-size: 18px; margin-bottom: 8px; }
.flow-item p { font-size: 14px; }

/* ============================================================
   关于页
   ============================================================ */
.about-lead {
  font-family: var(--serif); font-size: clamp(20px, 2.4vw, 27px);
  line-height: 1.7; color: var(--ink); max-width: 880px;
}
.about-cols {
  display: grid; grid-template-columns: 1fr 1fr; gap: 56px; margin-top: 64px;
}
.about-cols p { font-size: 15.5px; margin-bottom: 14px; }
.value-list { display: grid; gap: 0; border-top: 1px solid var(--line); }
.value-row {
  display: grid; grid-template-columns: 200px 1fr; gap: 32px;
  padding: 30px 0; border-bottom: 1px solid var(--line);
}
.value-row h3 { font-size: 20px; }
.value-row p { font-size: 15px; }
.office-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.office-card {
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px 28px; background: var(--paper);
}
.office-card h3 { margin-bottom: 10px; }
.office-card p { font-size: 14.5px; }

/* ============================================================
   联系页
   ============================================================ */
.contact-grid {
  display: grid; grid-template-columns: minmax(0, 6fr) minmax(0, 5fr); gap: 64px;
  align-items: start;
}
.contact-rows { display: grid; border-top: 1px solid var(--line); }
.contact-row {
  display: grid; grid-template-columns: 130px 1fr; gap: 24px;
  padding: 22px 0; border-bottom: 1px solid var(--line);
  font-size: 15.5px; align-items: baseline;
}
.contact-row .k { color: var(--ink-3); font-size: 14px; }
.contact-row .v { color: var(--ink); font-weight: 500; word-break: break-all; }
.contact-row .v a { border-bottom: 1px solid var(--seal); }
.contact-note { margin-top: 28px; font-size: 14px; color: var(--ink-3); }

/* ============================================================
   配置占位提示
   ============================================================ */
.cfg-pending {
  color: var(--ink-3) !important;
  background: rgba(140, 134, 120, 0.08);
  border-bottom: 1px dashed var(--ink-3);
  font-style: normal; font-weight: 400;
  padding: 0 4px;
}

/* ============================================================
   滚动浮现(尊重减弱动效偏好)
   ============================================================ */
@media (prefers-reduced-motion: no-preference) {
  .reveal {
    opacity: 0; transform: translateY(22px);
    transition: opacity .7s cubic-bezier(0.16, 1, 0.3, 1),
                transform .7s cubic-bezier(0.16, 1, 0.3, 1);
  }
  .reveal.in { opacity: 1; transform: none; }
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 960px) {
  .doc-cols, .case-list { grid-template-columns: 1fr !important; }
  .hero-grid { grid-template-columns: 1fr; gap: 44px; }
  .hero-seal-wrap { justify-content: flex-start; }
  .case-grid, .about-cols, .contact-grid, .svc-detail { grid-template-columns: 1fr; }
  .svc-detail.flip > .svc-detail-text { order: 0; }
  .stats-grid, .flow-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
  .client-wall { grid-template-columns: 1fr 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .svc-panel { min-height: 220px; font-size: 80px; }
}

@media (max-width: 720px) {
  .container, .nav-inner { padding: 0 20px; }
  .section { padding: 64px 0; }
  .hero { padding: 56px 0 64px; }
  .svc-grid { grid-template-columns: 1fr; }
  .client-wall { grid-template-columns: 1fr 1fr; }
  .value-row, .contact-row { grid-template-columns: 1fr; gap: 6px; }
  .office-grid { grid-template-columns: 1fr; }

  .nav-toggle { display: block; }
  .nav-links {
    display: none;
    position: absolute; top: var(--nav-h); left: 0; right: 0;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    flex-direction: column; align-items: flex-start;
    padding: 12px 20px 20px; gap: 14px;
  }
  .nav-links.open { display: flex; }
}