/* =============================================================
   燎原创意（深圳）科技有限公司 — 官网样式
   liaoyuanhub.com · 浅色稳重商务风 · 纯静态
   字体全部使用系统字体，不依赖任何 CDN（适配中国大陆访问）
   ============================================================= */

:root {
  /* 纸面 / 背景 */
  --paper:    #faf8f4;
  --paper-2:  #f2efea;
  --card:     #ffffff;

  /* 墨色 / 文字 */
  --ink:      #1f1f1f;
  --ink-2:    #3d3d3d;
  --muted:    #6b6b6b;
  --faint:    #9a9489;

  /* 线条 */
  --line:     #e2ddd2;
  --rule:     #ece8df;

  /* 品牌橙（公司统一配色） */
  --ember:        #ff5a2c;
  --ember-dark:   #d8400f;   /* 浅底文字/链接用，保证可读性 */
  --ember-btn:    #e0440f;   /* 主按钮底色 */
  --ember-soft:   #fff1eb;

  --font-serif: "Source Han Serif SC", "Songti SC", "STSong", "SimSun",
                "Noto Serif SC", "Songti TC", serif;
  --font-sans:  "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB",
                "Heiti SC", system-ui, -apple-system, sans-serif;
  --font-mono:  "SFMono-Regular", Consolas, "Microsoft YaHei", monospace;

  --maxw: 1200px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--paper);
  color: var(--ink-2);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
h1, h2, h3, h4 { font-family: var(--font-serif); color: var(--ink); margin: 0; }
::selection { background: var(--ember); color: #fff; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 32px; }
.serif { font-family: var(--font-serif); }
.em { color: var(--ember-dark); font-style: normal; }

/* ---------- 顶部导航 ---------- */
.topbar {
  position: sticky; top: 0; z-index: 50;
  background: rgba(250, 248, 244, 0.96);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
}
.topbar-inner {
  max-width: var(--maxw); margin: 0 auto; padding: 14px 32px;
  display: flex; align-items: center; gap: 28px; flex-wrap: wrap;
}
.brand { display: flex; align-items: center; gap: 11px; }
.brand-mark {
  width: 34px; height: 34px; border-radius: 7px; flex-shrink: 0;
  background: var(--ember);
  display: grid; place-items: center;
  color: #fff; font-family: var(--font-serif); font-weight: 700; font-size: 19px;
  box-shadow: 0 2px 8px rgba(255, 90, 44, 0.28);
}
.brand-text { line-height: 1.15; }
.brand-cn { font-family: var(--font-serif); font-weight: 700; font-size: 18px; color: var(--ink); }
.brand-en {
  font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.18em;
  color: var(--faint); text-transform: uppercase;
}
.nav { display: flex; gap: 4px; margin-left: auto; flex-wrap: wrap; }
.nav a {
  padding: 8px 14px; font-size: 15px; color: var(--ink-2);
  border-bottom: 2px solid transparent; transition: color .15s, border-color .15s;
}
.nav a:hover { color: var(--ember-dark); }
.nav a.active { color: var(--ink); border-bottom-color: var(--ember); font-weight: 600; }
.nav-cta {
  margin-left: 6px; padding: 9px 18px !important;
  background: var(--ember-btn); color: #fff !important; border-radius: 5px;
  font-weight: 600; border-bottom: none !important;
}
.nav-cta:hover { background: var(--ember-dark); }

/* ---------- 通用按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 26px; border-radius: 5px; font-size: 15px; font-weight: 600;
  font-family: var(--font-sans); cursor: pointer; transition: all .15s;
}
.btn-primary { background: var(--ember-btn); color: #fff; border: 1px solid var(--ember-btn); }
.btn-primary:hover { background: var(--ember-dark); box-shadow: 0 6px 18px rgba(216, 64, 15, 0.28); }
.btn-ghost { background: transparent; color: var(--ink); border: 1px solid var(--line); }
.btn-ghost:hover { border-color: var(--ember); color: var(--ember-dark); }
.btn .arrow { font-family: var(--font-mono); }

/* ---------- 区块脚手架 ---------- */
.section { padding: 84px 0; }
.section-alt { background: var(--paper-2); }
.section-ink { background: #1c1a17; color: #e8e4db; }
.eyebrow {
  font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--ember-dark); font-weight: 600;
}
.section-head { max-width: 720px; margin-bottom: 52px; }
.section-head h2 {
  font-size: clamp(28px, 3.4vw, 42px); font-weight: 700; line-height: 1.2;
  margin: 14px 0 0; letter-spacing: -0.01em;
}
.section-head p { color: var(--muted); font-size: 17px; margin: 16px 0 0; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }

/* ---------- 页眉 hero（首页） ---------- */
.hero { padding: 76px 0 64px; border-bottom: 1px solid var(--line); }
.hero-grid {
  display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 56px; align-items: center;
}
.hero h1 {
  font-size: clamp(34px, 4.6vw, 56px); font-weight: 700; line-height: 1.18;
  letter-spacing: -0.02em; margin: 18px 0 0;
}
.hero .lede { font-size: 18px; color: var(--ink-2); margin: 22px 0 0; max-width: 540px; }
.hero-actions { margin-top: 32px; display: flex; gap: 14px; flex-wrap: wrap; }
.hero-stats {
  margin-top: 44px; display: grid; grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
}
.hero-stats .cell { padding: 20px 14px 0 0; }
.hero-stats .n {
  font-family: var(--font-serif); font-size: 28px; font-weight: 700;
  color: var(--ink); line-height: 1;
}
.hero-stats .k { font-size: 13px; color: var(--muted); margin-top: 7px; }

/* hero 右侧装饰卡 */
.hero-visual {
  background: var(--card); border: 1px solid var(--line); border-radius: 10px;
  padding: 26px; box-shadow: 0 24px 50px -28px rgba(31, 27, 20, 0.32);
}
.hv-bar { display: flex; align-items: center; gap: 7px; padding-bottom: 16px;
  border-bottom: 1px solid var(--rule); }
.hv-dot { width: 9px; height: 9px; border-radius: 50%; background: #d8d3c8; }
.hv-dot.on { background: var(--ember); }
.hv-title { font-family: var(--font-mono); font-size: 11px; color: var(--faint);
  margin-left: 8px; letter-spacing: 0.05em; }
.hv-list { margin-top: 16px; display: flex; flex-direction: column; gap: 11px; }
.hv-row {
  display: flex; align-items: center; gap: 13px; padding: 13px 15px;
  border: 1px solid var(--rule); border-radius: 7px; background: var(--paper);
}
.hv-ic {
  width: 38px; height: 38px; border-radius: 7px; flex-shrink: 0;
  background: var(--ember-soft); color: var(--ember-dark);
  display: grid; place-items: center; font-family: var(--font-serif);
  font-weight: 700; font-size: 17px;
}
.hv-row .t { font-weight: 600; color: var(--ink); font-size: 15px; }
.hv-row .d { font-size: 13px; color: var(--muted); }
.hv-row .st {
  margin-left: auto; font-family: var(--font-mono); font-size: 11px;
  color: #2f9e44; background: #e9f7ec; padding: 3px 9px; border-radius: 20px;
  white-space: nowrap;
}

/* ---------- 卡片网格（产品 / 价值） ---------- */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }

.card {
  background: var(--card); border: 1px solid var(--line); border-radius: 10px;
  padding: 30px 26px; transition: transform .16s, box-shadow .16s, border-color .16s;
}
.card-link:hover {
  transform: translateY(-3px); border-color: var(--ember);
  box-shadow: 0 18px 38px -22px rgba(31, 27, 20, 0.3);
}
.card-ic {
  width: 50px; height: 50px; border-radius: 9px; margin-bottom: 18px;
  background: var(--ember-soft); color: var(--ember-dark);
  display: grid; place-items: center; font-family: var(--font-serif);
  font-weight: 700; font-size: 24px;
}
.card h3 { font-size: 21px; font-weight: 700; }
.card .tag {
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.08em;
  color: var(--faint); text-transform: uppercase;
}
.card p { color: var(--muted); font-size: 15px; margin: 12px 0 0; }
.card .more {
  display: inline-flex; align-items: center; gap: 6px; margin-top: 18px;
  color: var(--ember-dark); font-weight: 600; font-size: 14px;
}
.card .more .arrow { font-family: var(--font-mono); }

/* 价值点（小卡） */
.value { padding: 26px 22px; }
.value .vn {
  font-family: var(--font-mono); font-size: 13px; color: var(--ember-dark);
  font-weight: 600;
}
.value h4 { font-size: 18px; margin: 10px 0 8px; }
.value p { font-size: 14px; color: var(--muted); margin: 0; }

/* ---------- 产品详情区 ---------- */
.product { padding: 76px 0; border-bottom: 1px solid var(--line); }
.product:last-of-type { border-bottom: none; }
.product-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center;
}
.product-grid.flip .product-copy { order: 2; }
.product-grid.flip .product-shot { order: 1; }
.product-copy .kicker {
  font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--ember-dark); font-weight: 600;
}
.product-copy h2 { font-size: clamp(26px, 3vw, 36px); font-weight: 700; margin: 12px 0 0; }
.product-copy .desc { font-size: 16px; color: var(--ink-2); margin: 16px 0 0; }
.feat-list { margin: 24px 0 0; padding: 0; list-style: none;
  display: grid; grid-template-columns: 1fr 1fr; gap: 10px 22px; }
.feat-list li {
  position: relative; padding-left: 22px; font-size: 14px; color: var(--ink-2);
}
.feat-list li::before {
  content: "✓"; position: absolute; left: 0; top: 0;
  color: var(--ember-dark); font-weight: 700;
}
.use-line {
  margin-top: 24px; padding: 13px 16px; background: var(--ember-soft);
  border-left: 3px solid var(--ember); border-radius: 0 6px 6px 0;
  font-size: 14px; color: var(--ink-2);
}
.use-line b { color: var(--ember-dark); }

/* ---------- 产品截图模拟（mockup） ---------- */
.shot {
  background: var(--card); border: 1px solid var(--line); border-radius: 10px;
  overflow: hidden; box-shadow: 0 26px 54px -30px rgba(31, 27, 20, 0.4);
}
.shot-bar {
  display: flex; align-items: center; gap: 6px; padding: 11px 14px;
  background: var(--paper-2); border-bottom: 1px solid var(--line);
}
.shot-bar .d { width: 9px; height: 9px; border-radius: 50%; background: #d4cfc3; }
.shot-bar .url {
  margin-left: 10px; font-family: var(--font-mono); font-size: 11px;
  color: var(--faint); background: var(--card); padding: 3px 12px;
  border-radius: 20px; border: 1px solid var(--rule);
}
.shot-body { padding: 18px; background: var(--paper); }
.shot-cap {
  margin-top: 14px; font-size: 13px; color: var(--muted); text-align: center;
  font-style: normal;
}
.shot-cap b { color: var(--ink); }

/* mockup 内部通用积木 */
.mk-row { display: flex; gap: 12px; }
.mk-side {
  width: 130px; flex-shrink: 0; background: var(--card);
  border: 1px solid var(--rule); border-radius: 7px; padding: 12px;
}
.mk-side .mk-item {
  font-size: 12px; color: var(--muted); padding: 7px 9px; border-radius: 5px;
  margin-bottom: 4px;
}
.mk-side .mk-item.on { background: var(--ember-soft); color: var(--ember-dark); font-weight: 600; }
.mk-main { flex: 1; display: flex; flex-direction: column; gap: 10px; }
.mk-card {
  background: var(--card); border: 1px solid var(--rule); border-radius: 7px;
  padding: 12px 13px;
}
.mk-h { font-size: 13px; font-weight: 600; color: var(--ink); }
.mk-sub { font-size: 11px; color: var(--faint); margin-top: 2px; }
.mk-line { height: 8px; background: #ece8df; border-radius: 4px; margin-top: 8px; }
.mk-line.w70 { width: 70%; }
.mk-line.w45 { width: 45%; }
.mk-pill {
  display: inline-block; font-family: var(--font-mono); font-size: 10px;
  padding: 2px 8px; border-radius: 20px; background: #e9f7ec; color: #2f9e44;
}
.mk-pill.run { background: var(--ember-soft); color: var(--ember-dark); }
.mk-pill.wait { background: #eef0f2; color: #6b6b6b; }
.mk-stat { display: grid; grid-template-columns: repeat(3, 1fr); gap: 9px; }
.mk-stat .s {
  background: var(--card); border: 1px solid var(--rule); border-radius: 7px;
  padding: 11px;
}
.mk-stat .s .sn {
  font-family: var(--font-serif); font-size: 21px; font-weight: 700; color: var(--ink);
}
.mk-stat .s .sk { font-size: 10px; color: var(--faint); margin-top: 3px; }
.mk-bars { display: flex; align-items: flex-end; gap: 5px; height: 56px; margin-top: 10px; }
.mk-bars i { flex: 1; background: var(--ember); opacity: .55; border-radius: 3px 3px 0 0; }
.mk-bars i:nth-child(4) { opacity: .75; }
.mk-bars i:last-child { opacity: 1; }
.mk-chat { display: flex; flex-direction: column; gap: 8px; }
.mk-bubble {
  font-size: 12px; padding: 8px 11px; border-radius: 9px; max-width: 80%;
  line-height: 1.5;
}
.mk-bubble.them { background: var(--card); border: 1px solid var(--rule); color: var(--ink-2); }
.mk-bubble.us {
  background: var(--ember-soft); color: var(--ember-dark); align-self: flex-end;
  border: 1px solid #ffd9c9;
}

/* ---------- 团队 ---------- */
.team-card { text-align: left; }
.team-card .avatar {
  width: 56px; height: 56px; border-radius: 50%; margin-bottom: 16px;
  background: #1c1a17; color: var(--ember); display: grid; place-items: center;
  font-family: var(--font-serif); font-weight: 700; font-size: 22px;
}
.team-card h4 { font-size: 18px; }
.team-card .role {
  font-family: var(--font-mono); font-size: 11px; color: var(--ember-dark);
  letter-spacing: 0.06em; margin: 4px 0 10px;
}
.team-card p { font-size: 14px; color: var(--muted); margin: 0; }

/* ---------- 发展历程 ---------- */
.timeline { border-left: 2px solid var(--line); margin-left: 8px; }
.tl-item { position: relative; padding: 0 0 32px 32px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-item::before {
  content: ""; position: absolute; left: -9px; top: 4px;
  width: 16px; height: 16px; border-radius: 50%;
  background: var(--paper); border: 3px solid var(--ember);
}
.tl-year {
  font-family: var(--font-mono); font-size: 13px; font-weight: 600;
  color: var(--ember-dark);
}
.tl-item h4 { font-size: 18px; margin: 4px 0 6px; }
.tl-item p { font-size: 14px; color: var(--muted); margin: 0; }

/* ---------- 信息表 ---------- */
.info-table {
  width: 100%; border-collapse: collapse; background: var(--card);
  border: 1px solid var(--line); border-radius: 10px; overflow: hidden;
}
.info-table th, .info-table td {
  padding: 15px 20px; text-align: left; font-size: 15px;
  border-bottom: 1px solid var(--rule);
}
.info-table tr:last-child th, .info-table tr:last-child td { border-bottom: none; }
.info-table th {
  width: 200px; color: var(--muted); font-weight: 600; background: var(--paper-2);
  font-family: var(--font-sans);
}
.info-table td { color: var(--ink); }

/* ---------- 联系方式 ---------- */
.contact-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.contact-item { display: flex; gap: 16px; padding: 24px; }
.contact-item .ci-ic {
  width: 44px; height: 44px; border-radius: 8px; flex-shrink: 0;
  background: var(--ember-soft); color: var(--ember-dark);
  display: grid; place-items: center; font-size: 20px;
}
.contact-item h4 { font-size: 16px; margin-bottom: 4px; }
.contact-item p { margin: 0; font-size: 15px; color: var(--ink-2); }
.contact-item .sub { font-size: 13px; color: var(--muted); }

/* 表单 */
.form-card { padding: 32px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field { margin-bottom: 18px; }
.field label {
  display: block; font-size: 13px; font-weight: 600; color: var(--ink);
  margin-bottom: 7px;
}
.field input, .field select, .field textarea {
  width: 100%; padding: 11px 13px; font-size: 15px; font-family: var(--font-sans);
  border: 1px solid var(--line); border-radius: 6px; background: var(--paper);
  color: var(--ink);
}
.field textarea { resize: vertical; min-height: 110px; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--ember); background: #fff;
}
.form-note { font-size: 12px; color: var(--faint); margin-top: 6px; }

/* 地图占位 */
.map-ph {
  height: 320px; border-radius: 10px; border: 1px solid var(--line);
  background:
    repeating-linear-gradient(0deg, var(--rule) 0 1px, transparent 1px 40px),
    repeating-linear-gradient(90deg, var(--rule) 0 1px, transparent 1px 40px),
    var(--paper-2);
  display: grid; place-items: center; text-align: center; color: var(--muted);
}
.map-ph .pin {
  width: 46px; height: 46px; border-radius: 50% 50% 50% 0; transform: rotate(-45deg);
  background: var(--ember); margin: 0 auto 14px;
  box-shadow: 0 8px 20px -6px rgba(255, 90, 44, 0.6);
}

/* ---------- 暗色 CTA 区 ---------- */
.cta-band { background: #1c1a17; color: #e8e4db; padding: 76px 0; text-align: center; }
.cta-band h2 {
  color: #fff; font-size: clamp(26px, 3.4vw, 40px); font-weight: 700;
  max-width: 720px; margin: 0 auto;
}
.cta-band h2 em { color: var(--ember); font-style: normal; }
.cta-band p { color: #aaa49a; font-size: 17px; margin: 16px auto 30px; max-width: 560px; }
.cta-band .btn-ghost { color: #e8e4db; border-color: #45413a; }
.cta-band .btn-ghost:hover { border-color: var(--ember); color: var(--ember); }

/* ---------- 页脚 ---------- */
.site-foot { background: #161412; color: #b8b3a8; padding: 56px 0 26px; }
.foot-grid {
  display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 36px;
  padding-bottom: 36px; border-bottom: 1px solid #2c2925;
}
.foot-brand .brand-cn { color: #fff; }
.foot-brand .brand-en { color: #6f6a60; }
.foot-about { font-size: 13px; line-height: 1.8; margin-top: 14px; max-width: 320px; }
.foot-col h5 {
  font-size: 13px; color: #fff; font-family: var(--font-sans); font-weight: 600;
  margin: 0 0 14px;
}
.foot-col a, .foot-col p {
  display: block; font-size: 13px; color: #b8b3a8; padding: 4px 0; margin: 0;
  line-height: 1.6;
}
.foot-col a:hover { color: var(--ember); }
.foot-bottom {
  padding-top: 22px; display: flex; justify-content: center;
  flex-wrap: wrap; gap: 6px 18px; font-size: 12px; color: #6f6a60;
  text-align: center;
}
.foot-bottom a { color: #6f6a60; }
.foot-bottom a:hover { color: var(--ember); }

/* ---------- 页内通用页眉 ---------- */
.page-head { padding: 64px 0 56px; background: var(--paper-2); border-bottom: 1px solid var(--line); }
.page-head h1 {
  font-size: clamp(30px, 3.8vw, 46px); font-weight: 700; margin: 12px 0 0;
}
.page-head p { color: var(--muted); font-size: 17px; margin: 14px 0 0; max-width: 640px; }
.crumb { font-family: var(--font-mono); font-size: 12px; color: var(--faint); }
.crumb a:hover { color: var(--ember-dark); }

/* ---------- 行业标签 ---------- */
.chips { display: flex; flex-wrap: wrap; gap: 10px; }
.chip {
  padding: 9px 18px; border: 1px solid var(--line); border-radius: 30px;
  background: var(--card); font-size: 15px; color: var(--ink-2);
  font-family: var(--font-serif);
}
.chip:hover { border-color: var(--ember); color: var(--ember-dark); }

/* ---------- 响应式 ---------- */
@media (max-width: 900px) {
  .wrap, .topbar-inner { padding-left: 20px; padding-right: 20px; }
  .hero-grid, .product-grid, .grid-3, .grid-4, .grid-2,
  .contact-grid, .form-row, .foot-grid { grid-template-columns: 1fr; }
  .product-grid.flip .product-copy { order: 1; }
  .product-grid.flip .product-shot { order: 2; }
  .feat-list { grid-template-columns: 1fr; }
  .hero-stats { grid-template-columns: 1fr 1fr; }
  .info-table th { width: 130px; }
  .nav { width: 100%; margin-left: 0; }
  .section { padding: 56px 0; }
  .foot-bottom { flex-direction: column; }
}