/* ==========================================================================
   玉溪灵城科技有限责任公司 企业官网 - 全站样式
   配色：暖橙 / 赤金（主）· 深灰 / 咖啡（辅）· 纯白（点缀）
   ========================================================================== */

/* ---------- 字体：思源黑体（中文）+ Montserrat（英文） ---------- */
/* 中文使用思源黑体（Noto Sans SC）常用字子集，英文使用 Montserrat，均为免费可商用字体 */
@font-face {
  font-family: "Noto Sans SC";
  src: local("Source Han Sans SC"), local("Noto Sans SC"), url("../fonts/noto-sans-sc-400.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Noto Sans SC";
  src: local("Source Han Sans SC Bold"), local("Noto Sans SC Bold"), url("../fonts/noto-sans-sc-700.woff2") format("woff2");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Montserrat";
  src: url("../fonts/montserrat-400.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Montserrat";
  src: url("../fonts/montserrat-500.woff2") format("woff2");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Montserrat";
  src: url("../fonts/montserrat-600.woff2") format("woff2");
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Montserrat";
  src: url("../fonts/montserrat-700.woff2") format("woff2");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

/* ---------- 设计变量 ---------- */
:root {
  --dark-900: #1b1410;      /* 深咖（首屏、页脚） */
  --dark-800: #2a2018;
  --dark-700: #3a2b20;
  --primary: #c24f10;       /* 赤金主色 */
  --primary-500: #e07a2f;   /* 亮橙 */
  --primary-100: #fbede0;   /* 浅橙底 */
  --gold-400: #e9a648;      /* 点缀金 */
  --gold-300: #f5c77e;
  --ink-900: #211a15;
  --ink-700: #4c4038;
  --ink-500: #7c7066;
  --ink-300: #b3a395;
  --line: #ece2d6;

  --bg: #ffffff;
  --bg-soft: #fbf6ef;       /* 暖白底 */
  --bg-dark: #1b1410;

  --container: 1200px;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow-sm: 0 2px 8px rgba(43, 30, 20, .06);
  --shadow: 0 14px 40px rgba(43, 30, 20, .10);
  --shadow-lg: 0 24px 70px rgba(27, 20, 16, .20);

  --font: "Montserrat", "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
}

/* ---------- 基础重置 ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink-700);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a { color: inherit; text-decoration: none; }

h1, h2, h3, h4 {
  margin: 0;
  color: var(--ink-900);
  line-height: 1.3;
  font-weight: 700;
  letter-spacing: -.01em;
}

p { margin: 0; }

ul, ol { margin: 0; padding: 0; list-style: none; }

button { font-family: inherit; }

::selection { background: rgba(194, 79, 16, .18); }

/* ---------- 布局工具 ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: 96px 0; }
.section--soft { background: var(--bg-soft); }
.section--dark { background: var(--bg-dark); color: rgba(255, 255, 255, .72); }
.section--dark h2, .section--dark h3 { color: #fff; }

.section-head { max-width: 720px; margin-bottom: 48px; }
.section-head--center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head h2 { font-size: clamp(26px, 3vw, 36px); }
.section-head p { margin-top: 14px; color: var(--ink-500); font-size: 16px; }
/* 深色区块内的导语需提高对比度，浅底下的 ink-500 在深底上不可读 */
.section--dark .section-head p { color: rgba(255, 255, 255, .72); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--primary);
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}
.section--dark .eyebrow { color: var(--gold-400); }
.section--dark .eyebrow::before { background: var(--gold-400); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 26px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.2;
  cursor: pointer;
  transition: transform .2s ease, background .2s ease, box-shadow .2s ease, color .2s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary));
  color: #fff;
  box-shadow: 0 10px 24px rgba(194, 79, 16, .26);
}
.btn-primary:hover { box-shadow: 0 14px 30px rgba(194, 79, 16, .34); }
.btn-ghost {
  border-color: rgba(255, 255, 255, .28);
  color: #fff;
}
.btn-ghost:hover { background: rgba(255, 255, 255, .08); border-color: rgba(255, 255, 255, .5); }
.btn-outline {
  border-color: var(--line);
  color: var(--ink-900);
  background: #fff;
}
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }

/* ---------- 顶部导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(27, 20, 16, .92);
  backdrop-filter: saturate(140%) blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, .08);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: #fff;
  font-weight: 700;
  font-size: 18px;
  letter-spacing: .02em;
}
.brand-mark { width: 36px; height: 36px; flex: none; }
.brand-text small {
  display: block;
  margin-top: 1px;
  font-size: 10px;
  font-weight: 500;
  letter-spacing: .18em;
  color: rgba(255, 255, 255, .5);
  text-transform: uppercase;
}

.nav { display: flex; align-items: center; gap: 6px; }
.nav a {
  position: relative;
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 15px;
  color: rgba(255, 255, 255, .72);
  transition: color .2s ease, background .2s ease;
}
.nav a:hover { color: #fff; background: rgba(255, 255, 255, .06); }
.nav a.is-active { color: #fff; }
.nav a.is-active::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 0;
  height: 2px;
  border-radius: 2px;
  background: var(--gold-400);
}

.header-cta { margin-left: 18px; padding: 10px 20px; font-size: 14px; }

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  padding: 0;
  border: 1px solid rgba(255, 255, 255, .2);
  border-radius: 10px;
  background: transparent;
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 4px auto;
  background: #fff;
  border-radius: 2px;
  transition: transform .25s ease, opacity .2s ease;
}

/* ---------- 首页 Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  padding: 104px 0 96px;
  background:
    radial-gradient(1100px 520px at 82% -10%, rgba(224, 122, 47, .38), transparent 62%),
    radial-gradient(760px 420px at 8% 110%, rgba(233, 166, 72, .18), transparent 60%),
    linear-gradient(160deg, var(--dark-900) 0%, var(--dark-800) 58%, #3a2416 100%);
  color: rgba(255, 255, 255, .74);
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, .05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .05) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(circle at 50% 30%, #000 0%, transparent 78%);
  pointer-events: none;
}
.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 64px;
  align-items: center;
}
.hero h1 {
  margin-top: 8px;
  font-size: clamp(32px, 4.4vw, 54px);
  line-height: 1.18;
  color: #fff;
  letter-spacing: -.02em;
}
.hero h1 em {
  font-style: normal;
  background: linear-gradient(120deg, #ffd9a6, var(--gold-400));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-lead {
  max-width: 560px;
  margin-top: 22px;
  font-size: 17px;
  color: rgba(255, 255, 255, .72);
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 36px; }
.hero-note {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 34px;
  font-size: 13px;
  color: rgba(255, 255, 255, .55);
}
.hero-note .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--gold-400);
  box-shadow: 0 0 0 4px rgba(233, 166, 72, .18);
}

/* 右侧信息面板 */
.hero-panel {
  position: relative;
  padding: 30px;
  border: 1px solid rgba(255, 255, 255, .12);
  border-radius: 20px;
  background: linear-gradient(180deg, rgba(255, 255, 255, .09), rgba(255, 255, 255, .03));
  backdrop-filter: blur(6px);
  box-shadow: var(--shadow-lg);
}
.hero-panel-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 22px;
  padding-bottom: 16px;
  border-bottom: 1px solid rgba(255, 255, 255, .1);
  font-size: 13px;
  letter-spacing: .08em;
  color: rgba(255, 255, 255, .5);
}
.hero-panel-title strong { color: #fff; font-size: 15px; letter-spacing: 0; }
.hero-stat-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.hero-stat b {
  display: flex;
  align-items: baseline;
  gap: 3px;
  min-height: 32px;
  font-size: 28px;
  line-height: 1.1;
  color: #fff;
  letter-spacing: -.02em;
  white-space: nowrap;
}
/* 纯文字型数值（如"私有化"）字号下调，与含数字单位的格子视觉重量对齐 */
.hero-stat b.is-word { font-size: 24px; letter-spacing: 0; }
.hero-stat b span { font-size: 15px; font-weight: 500; color: rgba(255, 255, 255, .6); }
.hero-stat small { display: block; margin-top: 6px; font-size: 13px; color: rgba(255, 255, 255, .55); }

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

.card {
  position: relative;
  padding: 30px 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: var(--shadow-sm);
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.card:hover {
  transform: translateY(-4px);
  border-color: #e3d3c2;
  box-shadow: var(--shadow);
}
.card h3 { margin-bottom: 10px; font-size: 18px; }
.card p { font-size: 14.5px; color: var(--ink-500); }

.icon-box {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  margin-bottom: 18px;
  border-radius: 12px;
  background: var(--primary-100);
  color: var(--primary);
}
.icon-box svg { width: 24px; height: 24px; }

.card-tag {
  display: inline-block;
  margin-top: 16px;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--bg-soft);
  font-size: 12px;
  color: var(--ink-500);
}

/* ---------- AI 引擎区块（首页深色版块） ---------- */
.ai-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.ai-card {
  padding: 30px 26px;
  border: 1px solid rgba(255, 255, 255, .12);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(255, 255, 255, .07), rgba(255, 255, 255, .02));
  transition: transform .25s ease, border-color .25s ease, background .25s ease;
}
.ai-card:hover {
  transform: translateY(-4px);
  border-color: rgba(233, 166, 72, .45);
  background: linear-gradient(180deg, rgba(255, 255, 255, .1), rgba(255, 255, 255, .03));
}
.ai-card .icon-box {
  background: rgba(233, 166, 72, .16);
  color: var(--gold-300);
}
.ai-card h3 { margin-bottom: 10px; font-size: 18px; color: #fff; }
.ai-card p { font-size: 14.5px; color: rgba(255, 255, 255, .62); }

.ai-foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-top: 32px;
  padding-top: 28px;
  border-top: 1px solid rgba(255, 255, 255, .1);
}
.ai-foot p { font-size: 14.5px; color: rgba(255, 255, 255, .6); }

/* ---------- 项目类型清单 ---------- */
.type-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.type-card {
  padding: 28px 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: var(--shadow-sm);
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.type-card:hover {
  transform: translateY(-4px);
  border-color: #e3d3c2;
  box-shadow: var(--shadow);
}
.type-card header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 12px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}
.type-card h3 { font-size: 18px; }
.type-card .en {
  font-family: "Montserrat", sans-serif;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink-500);
  white-space: nowrap;
}
.type-card p { font-size: 14.5px; color: var(--ink-500); }
.type-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.type-tag {
  padding: 5px 12px;
  border-radius: 999px;
  background: var(--primary-100);
  color: var(--primary);
  font-size: 12.5px;
  font-weight: 500;
}

/* ---------- 分层技术栈 ---------- */
.stack-list { display: grid; gap: 14px; }
.stack-layer {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 24px;
  align-items: center;
  padding: 22px 26px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
  transition: border-color .25s ease, transform .25s ease, box-shadow .25s ease;
}
.stack-layer:hover {
  border-color: #e3d3c2;
  transform: translateX(4px);
  box-shadow: var(--shadow-sm);
}
.stack-layer h4 { font-size: 16px; margin-bottom: 2px; }
.stack-layer .en {
  display: block;
  font-family: "Montserrat", sans-serif;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink-500);
}
.stack-items { display: flex; flex-wrap: wrap; gap: 10px; }
.stack-item {
  padding: 7px 15px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--bg-soft);
  font-size: 13.5px;
  color: var(--ink-700);
}

/* ---------- 交付承诺 ---------- */
.promise-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px 40px; }
.promise { display: flex; gap: 16px; }
.promise .icon-box { flex: none; margin-bottom: 0; }
.promise h3 { font-size: 17px; margin-bottom: 6px; }
.promise p { font-size: 14.5px; color: var(--ink-500); }

/* ---------- 交付物三栏 ---------- */
.deliver-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.deliver-col {
  padding: 28px 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: var(--shadow-sm);
}
.deliver-col h3 {
  margin-bottom: 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
  font-size: 17px;
}
.deliver-list { display: grid; gap: 11px; }
.deliver-list li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  color: var(--ink-500);
}
.deliver-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary-500);
}

/* ---------- AI 详情页 ---------- */
.ai-detail-list { display: grid; gap: 28px; }
.ai-detail {
  padding: 34px 32px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: var(--shadow-sm);
}
.ai-detail-head {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  padding-bottom: 22px;
  margin-bottom: 22px;
  border-bottom: 1px solid var(--line);
}
.ai-detail-head .icon-box { flex: none; margin-bottom: 0; }
.ai-index {
  display: block;
  margin-bottom: 4px;
  font-family: "Montserrat", sans-serif;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--primary);
}
.ai-detail-head h3 { font-size: 20px; margin-bottom: 8px; }
.ai-lead { font-size: 14.5px; color: var(--ink-500); }
.ai-points { display: grid; gap: 12px; }
.ai-points li {
  position: relative;
  padding-left: 22px;
  font-size: 14.5px;
  color: var(--ink-500);
}
.ai-points li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 10px;
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background: var(--primary-100);
  border: 1px solid var(--primary-500);
}
.ai-points b { color: var(--ink-900); font-weight: 600; }

/* ---------- FAQ ---------- */
.faq-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px 40px; }
.faq-item {
  padding: 24px 26px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
}
.faq-item h3 { font-size: 16px; margin-bottom: 8px; }
.faq-item p { font-size: 14.5px; color: var(--ink-500); }

/* ---------- 页面 Banner ---------- */
.page-banner {
  position: relative;
  overflow: hidden;
  padding: 84px 0 72px;
  background:
    radial-gradient(900px 400px at 85% 0%, rgba(224, 122, 47, .34), transparent 60%),
    linear-gradient(150deg, var(--dark-900), var(--dark-800));
  color: rgba(255, 255, 255, .7);
}
.page-banner::after {
  content: "";
  position: absolute;
  right: -80px;
  bottom: -120px;
  width: 420px;
  height: 420px;
  border: 1px solid rgba(255, 255, 255, .08);
  border-radius: 50%;
  box-shadow: 0 0 0 60px rgba(255, 255, 255, .02), 0 0 0 120px rgba(255, 255, 255, .02);
  pointer-events: none;
}
.page-banner h1 { position: relative; font-size: clamp(30px, 3.6vw, 44px); color: #fff; }
.page-banner p { position: relative; max-width: 680px; margin-top: 16px; font-size: 16px; }
.crumbs { position: relative; margin-bottom: 20px; font-size: 13px; color: rgba(255, 255, 255, .5); }
.crumbs a:hover { color: #fff; }
.crumbs span { margin: 0 8px; color: rgba(255, 255, 255, .5); }

/* ---------- 业务能力页 ---------- */
.service-card { display: flex; flex-direction: column; height: 100%; }
.service-card ul { margin-top: 18px; display: grid; gap: 10px; }
.service-card li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  color: var(--ink-500);
}
.service-card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary-500);
}

.process {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
  margin-top: 8px;
  counter-reset: step;
}
.process-step {
  position: relative;
  padding: 28px 22px 26px;
  border: 1px solid var(--line);
  background: #fff;
  counter-increment: step;
}
.process-step:first-child { border-radius: 14px 0 0 14px; }
.process-step:last-child { border-radius: 0 14px 14px 0; }
.process-step + .process-step { border-left: none; }
.process-step::before {
  content: counter(step, decimal-leading-zero);
  display: block;
  margin-bottom: 12px;
  font-size: 13px;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: .08em;
}
.process-step b { display: block; font-size: 16px; color: var(--ink-900); margin-bottom: 8px; }
.process-step small { font-size: 13px; color: var(--ink-500); line-height: 1.65; display: block; }

/* ---------- 落地场景 ---------- */
.scene-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.scene {
  padding: 26px 22px;
  border-radius: 14px;
  background: #fff;
  border: 1px solid var(--line);
}
.scene b { display: block; font-size: 16px; color: var(--ink-900); margin-bottom: 8px; }
.scene small { display: block; font-size: 13.5px; color: var(--ink-500); line-height: 1.7; }

/* 深色版块内的场景卡片 */
.section--dark .scene {
  background: rgba(255, 255, 255, .06);
  border-color: rgba(255, 255, 255, .12);
}
.section--dark .scene b { color: #fff; }
.section--dark .scene small { color: rgba(255, 255, 255, .6); }

.note-box {
  margin-top: 36px;
  padding: 20px 24px;
  border-left: 3px solid var(--primary-500);
  border-radius: 0 12px 12px 0;
  background: var(--bg-soft);
  font-size: 13.5px;
  color: var(--ink-500);
}
/* 深色区块内的提示框需反色，避免浅米底与黑底割裂 */
.section--dark .note-box {
  background: rgba(255, 255, 255, .07);
  color: rgba(255, 255, 255, .72);
  border-left-color: var(--gold-400);
}

/* ---------- 关于我们 ---------- */
.info-table {
  width: 100%;
  border-collapse: collapse;
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
  font-size: 14.5px;
}
.info-table th,
.info-table td {
  padding: 15px 20px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
}
.info-table tr:last-child th,
.info-table tr:last-child td { border-bottom: none; }
.info-table th {
  width: 190px;
  background: var(--bg-soft);
  color: var(--ink-900);
  font-weight: 600;
  white-space: nowrap;
}
.info-table td { color: var(--ink-700); }

.value-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.value-card {
  padding: 30px 26px;
  border-radius: var(--radius);
  background: linear-gradient(180deg, #fff, #fffcf6);
  border: 1px solid var(--line);
}
.value-card h3 { font-size: 17px; margin-bottom: 10px; }
.value-card p { font-size: 14.5px; color: var(--ink-500); }

.milestones { display: grid; gap: 0; }
.milestone {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 30px;
  padding: 22px 0;
  border-bottom: 1px dashed var(--line);
}
.milestone:last-child { border-bottom: none; }
.milestone time { font-size: 15px; font-weight: 700; color: var(--primary); }
.milestone div b { display: block; font-size: 16px; color: var(--ink-900); margin-bottom: 4px; }
.milestone div p { font-size: 14.5px; color: var(--ink-500); }

/* ---------- 图片放大遮罩（预留，后续案例配图可复用） ---------- */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 300;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 40px;
  background: rgba(24, 15, 10, .9);
  backdrop-filter: blur(4px);
}
.lightbox.is-open { display: flex; }
.lightbox img {
  max-width: 92vw;
  max-height: 88vh;
  border-radius: 8px;
  box-shadow: 0 30px 80px rgba(0, 0, 0, .5);
}
.lightbox-close {
  position: absolute;
  top: 24px;
  right: 28px;
  width: 44px;
  height: 44px;
  border: 1px solid rgba(255, 255, 255, .3);
  border-radius: 50%;
  background: transparent;
  color: #fff;
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
}
.lightbox-close:hover { background: rgba(255, 255, 255, .12); }

/* ---------- 联系我们 ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 48px; align-items: start; }
.contact-list { display: grid; gap: 22px; }
.contact-item {
  display: flex;
  gap: 16px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
}
.contact-item .icon-box { margin-bottom: 0; flex: none; width: 42px; height: 42px; }
.contact-item b { display: block; font-size: 15px; color: var(--ink-900); margin-bottom: 4px; }
.contact-item p { font-size: 14.5px; color: var(--ink-500); word-break: break-all; }
.contact-item .pending { color: #a84a11; }

.form {
  padding: 34px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: var(--shadow-sm);
}
.form h3 { font-size: 20px; margin-bottom: 6px; }
.form > p { font-size: 13.5px; color: var(--ink-500); margin-bottom: 24px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field { margin-bottom: 18px; }
.field label { display: block; margin-bottom: 8px; font-size: 13.5px; font-weight: 600; color: var(--ink-900); }
.field input,
.field textarea,
.field select {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fffdf9;
  font-family: inherit;
  font-size: 14.5px;
  color: var(--ink-900);
  outline: none;
  transition: border-color .2s ease, box-shadow .2s ease;
}
.field textarea { min-height: 116px; resize: vertical; }
.field input:focus,
.field textarea:focus,
.field select:focus {
  border-color: var(--primary-500);
  box-shadow: 0 0 0 3px rgba(224, 122, 47, .14);
}
.form .btn { width: 100%; margin-top: 6px; }
.form .btn[disabled] { opacity: .68; cursor: not-allowed; box-shadow: none; }
.form-status { margin-top: 12px; font-size: 13px; line-height: 1.6; text-align: center; min-height: 18px; }
.form-status:empty { display: none; }
.form-status.is-loading { color: var(--ink-500); }
.form-status.is-success { color: #1c7a45; }
.form-status.is-error { color: #b3261e; }
.form-hint { margin-top: 14px; font-size: 12.5px; color: var(--ink-500); text-align: center; }

/* ---------- 底部 CTA ---------- */
.cta-band {
  position: relative;
  overflow: hidden;
  padding: 72px 0;
  background: linear-gradient(135deg, #2a1a10, #6b3010 55%, #8f3f0f);
  color: rgba(255, 255, 255, .82);
}
.cta-band::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle at 80% 20%, rgba(245, 199, 126, .22), transparent 45%);
  pointer-events: none;
}
.cta-inner {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}
.cta-inner h2 { color: #fff; font-size: clamp(24px, 2.8vw, 34px); }
.cta-inner p { margin-top: 10px; font-size: 15px; }
.cta-actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* ---------- 页脚 ---------- */
.site-footer {
  padding: 64px 0 28px;
  background: var(--dark-900);
  color: rgba(255, 255, 255, .55);
  font-size: 14px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 44px;
  border-bottom: 1px solid rgba(255, 255, 255, .09);
}
.footer-brand .brand { margin-bottom: 16px; }
.footer-brand p { font-size: 13.5px; line-height: 1.8; color: rgba(255, 255, 255, .5); }
.footer-col h4 {
  margin-bottom: 16px;
  font-size: 14px;
  color: #fff;
  letter-spacing: .04em;
}
.footer-col a,
.footer-col li { display: block; margin-bottom: 10px; font-size: 13.5px; color: rgba(255, 255, 255, .55); }
.footer-col a:hover { color: #fff; }
.footer-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-top: 26px;
  font-size: 12.5px;
  color: rgba(255, 255, 255, .38);
}
.footer-meta p { margin: 0; }

/* ---------- 滚动入场动画 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .6s ease, transform .6s ease;
}
.reveal.is-visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .btn:hover, .card:hover, .type-card:hover, .ai-card:hover, .stack-layer:hover { transform: none; }
}

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
  .hero-grid { grid-template-columns: 1fr; gap: 48px; }
  .hero-panel { max-width: 620px; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .ai-grid { grid-template-columns: repeat(2, 1fr); }
  .deliver-grid { grid-template-columns: repeat(2, 1fr); }
  .scene-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .process { grid-template-columns: repeat(3, 1fr); }
  .process-step { border-radius: 0 !important; }
  .process-step + .process-step { border-left: 1px solid var(--line); }
  .process-step:nth-child(4) { border-top: none; }
}

@media (max-width: 900px) {
  .nav-toggle { display: block; }
  .nav {
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px 24px 20px;
    background: rgba(27, 20, 16, .98);
    border-bottom: 1px solid rgba(255, 255, 255, .1);
    display: none;
  }
  .nav.is-open { display: flex; }
  .nav a { padding: 12px 8px; border-radius: 0; border-bottom: 1px solid rgba(255, 255, 255, .06); }
  .nav a.is-active::after { display: none; }
  .header-cta { display: none; }
  .contact-grid { grid-template-columns: 1fr; }
  .grid-3 { grid-template-columns: 1fr 1fr; }
  .value-grid { grid-template-columns: 1fr; }
  .type-grid { grid-template-columns: 1fr; }
  .promise-list { grid-template-columns: 1fr; }
  .faq-list { grid-template-columns: 1fr; }
  .stack-layer { grid-template-columns: 1fr; gap: 12px; }
}

@media (max-width: 720px) {
  .section { padding: 64px 0; }
  .hero { padding: 72px 0 64px; }
  .page-banner { padding: 60px 0 52px; }
  .grid-2, .grid-3, .grid-4, .form-row, .scene-grid,
  .ai-grid, .deliver-grid, .type-grid, .promise-list, .faq-list { grid-template-columns: 1fr; }
  .section-head { margin-bottom: 32px; }
  .process { grid-template-columns: 1fr; }
  .process-step:first-child { border-radius: 14px 14px 0 0 !important; }
  .process-step:last-child { border-radius: 0 0 14px 14px !important; }
  .process-step + .process-step { border-left: 1px solid var(--line); border-top: none; }
  .milestone { grid-template-columns: 1fr; gap: 6px; }
  .info-table th { width: 120px; white-space: normal; }
  .info-table th, .info-table td { padding: 12px 14px; font-size: 13.5px; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .hero-stat b { font-size: 24px; }
  .cta-inner { flex-direction: column; align-items: flex-start; }
  .ai-detail { padding: 26px 20px; }
  .ai-detail-head { gap: 14px; }
  .type-card, .deliver-col, .ai-card { padding: 24px 20px; }
  .ai-foot { flex-direction: column; align-items: flex-start; }
}