/* ============ 设计变量 ============ */
:root {
  --brand-red: #C03820;
  --brand-red-bright: #e05638;
  --brand-red-dark: #9e2d18;
  --brand-gold: #F0B018;
  --brand-blue: #3070B8;
  --ink: #2b2b2b;
  --ink-soft: #4a4a4a;
  --muted: #6b6b6b;
  --line: #e6e1dc;
  --bg: #faf7f5;
  --bg-soft: #f5f0ec;
  --white: #ffffff;
  --radius: 14px;
  --shadow: 0 12px 36px rgba(120, 60, 30, 0.10);
  --shadow-hover: 0 18px 44px rgba(120, 60, 30, 0.16);
  --line-hover: #d9ccc3;
  --container: 1120px;
  --font: "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", -apple-system, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

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

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

h1, h2, h3 { line-height: 1.3; font-weight: 700; }

/* ============ 按钮 ============ */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 13px 28px; border-radius: 999px;
  font-weight: 600; font-size: 15px; cursor: pointer;
  transition: all .25s ease;
}
.btn-primary { background: linear-gradient(135deg, #e05638, #C03820); color: #fff; box-shadow: 0 8px 20px rgba(192, 56, 32, .18); }
.btn-primary:hover { background: linear-gradient(135deg, #d94a2e, #a5321c); transform: translateY(-2px); box-shadow: 0 12px 28px rgba(192, 56, 32, .30); }
.btn-ghost { background: transparent; color: var(--brand-red); border: 1.5px solid var(--brand-red); }
.btn-ghost:hover { background: var(--brand-red); color: #fff; }
.btn-sm { padding: 9px 20px; font-size: 14px; }

/* ============ 导航 ============ */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand { display: flex; align-items: center; gap: 10px; }
.brand img { width: 40px; height: 40px; }
.brand-name { font-size: 18px; font-weight: 700; letter-spacing: 1px; }
.nav-menu { display: flex; list-style: none; gap: 28px; }
.nav-menu a { font-size: 14.5px; color: var(--ink-soft); transition: color .2s; }
.nav-menu a:hover { color: var(--brand-red); }
.nav-menu a.active { color: var(--brand-red); font-weight: 600; }
.nav-actions { display: flex; align-items: center; gap: 12px; }
.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; }
.nav-toggle span { width: 24px; height: 2px; background: var(--ink); border-radius: 2px; }

/* ============ 首屏 ============ */
.hero {
  background:
    radial-gradient(820px 520px at 82% 18%, rgba(240, 176, 24, .16), transparent 58%),
    radial-gradient(680px 520px at 12% 88%, rgba(224, 86, 56, .30), transparent 56%),
    linear-gradient(135deg, #3a2618 0%, #562f1c 50%, #C03820 120%);
  color: #fff; overflow: hidden;
}
.hero-inner { display: flex; align-items: center; justify-content: space-between; gap: 48px; padding: 96px 24px; }
.hero-text { max-width: 620px; }
.hero-eyebrow { display: inline-block; font-size: 14px; color: #f0c9c0; letter-spacing: 2px; margin-bottom: 18px; }
.hero-text h1 { font-size: 46px; line-height: 1.25; margin-bottom: 20px; }
.hero-text h1 span { color: #ffb4a3; }
.hero-sub { font-size: 17px; color: #e8dcd7; margin-bottom: 34px; max-width: 520px; }
.hero-actions { display: flex; gap: 16px; }
.hero .btn-ghost { color: #fff; border-color: rgba(255,255,255,.6); }
.hero .btn-ghost:hover { background: #fff; color: var(--brand-red); border-color: #fff; }
.hero-micro { margin-top: 22px; font-size: 13px; color: rgba(255,255,255,.78); letter-spacing: .5px; }
/* ============ 数字带 ============ */
.stats { background: var(--white); border-bottom: 1px solid var(--line); }
.stats-grid { display: flex; justify-content: space-between; padding: 44px 24px; }
.stat { text-align: center; flex: 1; }
.stat-num { font-size: 44px; font-weight: 800; color: var(--brand-red); }
.stat-suffix { font-size: 26px; font-weight: 700; color: var(--brand-red); }
.stat-label { font-size: 14px; color: var(--muted); margin-top: 2px; }
.stats-note { text-align: center; font-size: 13.5px; color: var(--muted); padding: 0 24px 26px; margin-top: -4px; }

/* ============ 通用 section ============ */
.section { padding: 84px 0; }
.section-head { text-align: center; max-width: 640px; margin: 0 auto 52px; }
.section-head h2 { font-size: 32px; margin-bottom: 14px; }
.section-head p { color: var(--muted); font-size: 16px; }

/* ============ 四位一体中心环绕图 ============ */
.pillars {
  background:
    radial-gradient(900px 500px at 16% 16%, rgba(240, 176, 24, .10), transparent 60%),
    radial-gradient(1100px 540px at 50% 46%, rgba(192, 56, 32, .22), transparent 62%),
    linear-gradient(160deg, #2a1b13 0%, #3a2417 50%, #24150e 100%);
}
.pillars .section-head h2 { color: #fff; }
.pillars .section-head p { color: #bfa9a1; }

.core-diagram { position: relative; max-width: 960px; margin: 0 auto; height: 620px; }
.core-lines { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; }

.core-halo { fill: url(#coreHaloGrad); }
.core-ring { fill: none; stroke: rgba(192, 56, 32, .28); stroke-width: 1.5; stroke-dasharray: 2 8; }
.core-ring-sweep {
  fill: none; stroke: rgba(192, 56, 32, .95); stroke-width: 4; stroke-linecap: round;
  stroke-dasharray: 300 1428;
  transform-origin: 50% 50%; transform-box: fill-box;
  animation: ringSweep 14s linear infinite;
}
@keyframes ringSweep { to { transform: rotate(360deg); } }

.core-ray { stroke: rgba(192, 56, 32, .42); stroke-width: 2; stroke-linecap: round; }
.core-dot { fill: #C03820; }

.core-center {
  position: absolute; left: 50%; top: 54%; transform: translate(-50%, -50%);
  width: 180px; height: 180px; border-radius: 50%; z-index: 3;
  background: radial-gradient(circle at 32% 28%, #e8553b 0%, #C03820 46%, #8c2817 100%);
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 6px;
  color: #fff; text-align: center;
  box-shadow: 0 20px 60px rgba(192, 56, 32, .45), inset 0 2px 8px rgba(255, 255, 255, .20);
}
.core-center::before {
  content: ""; position: absolute; inset: -14px; border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, .16);
}
.core-center::after {
  content: ""; position: absolute; inset: -26px; border-radius: 50%;
  border: 1px solid rgba(192, 56, 32, .5);
  animation: centerPulse 3.6s ease-in-out infinite;
}
.core-center-plus { font-size: 52px; font-weight: 800; letter-spacing: 1px; line-height: 1; text-shadow: 0 2px 12px rgba(0, 0, 0, .25); }
.core-center-sub { font-size: 13px; color: #f3d9d3; letter-spacing: 2px; }
@keyframes centerPulse {
  0%, 100% { transform: scale(1); opacity: .55; }
  50% { transform: scale(1.09); opacity: .12; }
}

.core-node {
  position: absolute; width: 300px; z-index: 2;
  background: rgba(255, 255, 255, .05);
  border: 1px solid rgba(255, 255, 255, .12);
  border-radius: 16px;
  padding: 28px 26px 24px;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  transition: all .35s ease;
}
.core-node:hover {
  transform: translateY(-6px);
  border-color: rgba(192, 56, 32, .55);
  background: rgba(255, 255, 255, .09);
  box-shadow: 0 22px 48px rgba(0, 0, 0, .38);
}
.core-node-head { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.core-node-icon {
  width: 44px; height: 44px; flex-shrink: 0; border-radius: 12px;
  background: linear-gradient(135deg, #C03820 0%, #8c2817 100%);
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 8px 20px rgba(192, 56, 32, .35);
}
.core-node-icon img { width: 24px; height: 24px; filter: brightness(0) invert(1); }
.core-node h3 { font-size: 18px; margin: 0; color: #fff; line-height: 1.3; }
.core-node h3 small { font-size: 12px; color: #F0B018; font-weight: 600; margin-left: 6px; }
.core-node p { color: #c9bdb8; font-size: 13.5px; line-height: 1.7; margin-top: 0; }
.core-node-software { left: 50%; top: 6px; transform: translateX(-50%); }
.core-node-software:hover { transform: translateX(-50%) translateY(-6px); }
.core-node-lean { left: 34px; bottom: 34px; }
.core-node-hardware { right: 34px; bottom: 34px; }

/* 移动端降级：纵向堆叠 */
@media (max-width: 768px) {
  .core-diagram { height: auto; display: flex; flex-direction: column; gap: 18px; padding: 0; }
  .core-lines { display: none; }
  .core-center { position: static; transform: none; width: 150px; height: 150px; margin: 0 auto; }
  .core-center::after { inset: -18px; }
  .core-center-plus { font-size: 42px; }
  .core-node { position: static; width: 100%; transform: none; }
  .core-node:hover { transform: none; }
}

/* ============ 行业 ============ */
.industries { background: var(--bg); }
.industries-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 20px; }
.industry-card { background: var(--white); border-radius: var(--radius); padding: 26px 22px; border: 1px solid var(--line); transition: all .3s ease; }
.industry-card:hover { border-color: var(--line-hover); box-shadow: var(--shadow-hover); transform: translateY(-4px); }
.industry-card h3 { font-size: 17px; margin-bottom: 10px; }
.industry-card p { font-size: 13.5px; color: var(--muted); }

/* ============ 案例 ============ */
.cases { background: var(--white); }
.cases-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 24px; }
.case-card { display: block; background: var(--bg); border-radius: var(--radius); padding: 30px 26px; border: 1px solid var(--line); transition: all .3s ease; }
.case-card:hover { border-color: var(--line-hover); box-shadow: var(--shadow-hover); transform: translateY(-4px); }
.case-card h3 { font-size: 17px; margin-bottom: 14px; }
.case-tag {
  display: inline-block; font-size: 12px; font-weight: 600; color: var(--brand-red);
  background: rgba(192, 56, 32, .08); border: 1px solid rgba(192, 56, 32, .25);
  padding: 2px 12px; border-radius: 999px; margin-bottom: 12px;
}
.case-metric { display: flex; align-items: baseline; gap: 6px; min-height: 30px; font-size: 14px; color: var(--ink-soft); margin-bottom: 10px; }
.case-status {
  display: inline-block; margin-left: 6px;
  font-size: 11px; font-weight: 600; color: #b07a12;
  background: rgba(240,176,24,.12); border: 1px solid rgba(240,176,24,.40);
  padding: 1px 9px; border-radius: 999px; vertical-align: 2px;
}
.case-metric strong { font-size: 24px; color: var(--brand-red); white-space: nowrap; }
.case-desc { font-size: 14px; color: var(--muted); }

/* ============ 免费工具 ============ */
.tools { background: var(--white); }
.tools-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 24px; max-width: 980px; margin: 0 auto; }
.tool-card { background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius); padding: 30px; transition: all .3s ease; display: block; }
.tool-card:hover { border-color: var(--line-hover); box-shadow: var(--shadow-hover); transform: translateY(-4px); }
.tool-tag { display: inline-block; font-size: 12px; font-weight: 600; color: var(--brand-red); background: rgba(192, 56, 32, .08); border: 1px solid rgba(192, 56, 32, .25); padding: 2px 12px; border-radius: 999px; margin-bottom: 14px; }
.tool-card h3 { font-size: 20px; margin-bottom: 10px; }
.tool-card p { font-size: 14.5px; color: var(--ink-soft); margin-bottom: 16px; }
.tool-link { font-size: 14px; font-weight: 600; color: var(--brand-red); }

/* ============ 方法论 / 架构图 ============ */
.methodology { background: var(--bg); }
.architecture { background: var(--white); }
/* 方法论三步递进 */
.method-steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 8px; position: relative; }
.method-step {
  background: var(--white); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px 28px; transition: all .3s ease; position: relative;
}
.method-step:hover { border-color: var(--line-hover); box-shadow: var(--shadow-hover); transform: translateY(-4px); }
.method-step-num {
  font-size: 34px; font-weight: 800; color: var(--brand-red); line-height: 1;
  margin-bottom: 14px; font-variant-numeric: tabular-nums;
}
.method-step h3 { font-size: 20px; margin-bottom: 6px; color: var(--ink); }
.method-step-tag { font-size: 13px; color: var(--brand-red); font-weight: 600; margin-bottom: 16px; }
.method-step ul { list-style: none; }
.method-step ul li { font-size: 14px; color: var(--ink-soft); padding: 5px 0 5px 20px; position: relative; line-height: 1.6; }
.method-step ul li::before { content: "→"; position: absolute; left: 0; color: var(--brand-red); font-weight: 700; }

/* 架构三要点 */
.architecture-points { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; max-width: 900px; margin: 32px auto 0; }
.arch-point { background: var(--bg); border: 1px solid var(--line); border-radius: 12px; padding: 22px 24px; text-align: center; transition: all .3s ease; }
.arch-point:hover { border-color: var(--line-hover); box-shadow: var(--shadow-hover); transform: translateY(-4px); }
.arch-point h3 { font-size: 17px; margin-bottom: 8px; color: var(--brand-red); }
.arch-point p { font-size: 14px; color: var(--ink-soft); }

/* ============ 关于 ============ */
.about { background: var(--bg); }
.about-inner { display: grid; grid-template-columns: 1.1fr .9fr; gap: 56px; align-items: start; }
.about-text h2 { font-size: 32px; margin-bottom: 20px; }
.about-text > p { color: var(--ink-soft); margin-bottom: 16px; font-size: 15.5px; }
.about-values { list-style: none; margin-top: 22px; }
.about-values li { padding: 12px 0; border-bottom: 1px dashed var(--line); font-size: 15px; color: var(--ink-soft); }
.about-values strong { color: var(--brand-red); margin-right: 10px; }
.about-cards { display: flex; flex-direction: column; gap: 18px; }
.about-card { background: var(--white); border-radius: var(--radius); padding: 26px; border: 1px solid var(--line); transition: all .3s ease; }
.about-card:hover { border-color: var(--line-hover); box-shadow: var(--shadow-hover); transform: translateY(-4px); }
.about-card h3 { font-size: 18px; margin-bottom: 8px; color: var(--brand-red); }
.about-card p { font-size: 14.5px; color: var(--ink-soft); }

/* ============ 转化区 ============ */
.contact {
  background:
    radial-gradient(620px 420px at 86% 12%, rgba(240, 176, 24, .24), transparent 60%),
    linear-gradient(135deg, #e05638 0%, #C03820 52%, #9e2d18 100%);
  color: #fff;
}
.contact-inner { display: flex; align-items: center; justify-content: space-between; gap: 48px; }
.contact-text { max-width: 560px; }
.contact-text h2 { font-size: 34px; margin-bottom: 18px; }
.contact-text > p { color: #f3d9d3; margin-bottom: 26px; font-size: 16px; }
.contact-info p { margin-bottom: 8px; font-size: 15px; }
.contact-info strong { color: #ffd6cc; margin-right: 8px; }
.contact-qr { display: flex; gap: 28px; flex-shrink: 0; }
.qr-box { text-align: center; position: relative; }
.qr-box img {
  width: 132px; height: 132px; border-radius: 12px; background: #fff; padding: 8px;
  position: relative; z-index: 1;
  transition: transform .3s ease, box-shadow .3s ease;
}
.qr-box img:hover {
  transform: scale(2.1);
  z-index: 20;
  box-shadow: 0 12px 40px rgba(0, 0, 0, .32);
}
.qr-box p { margin-top: 10px; font-size: 14px; color: #f3d9d3; }

/* ============ 页脚 ============ */
.site-footer { background: #251b13; color: #c9c2bd; }
.footer-main { display: flex; align-items: center; justify-content: space-between; gap: 32px; flex-wrap: wrap; padding: 44px 0 38px; }
.footer-brand { display: flex; align-items: center; gap: 14px; }
.footer-brand img { width: 44px; height: 44px; }
.footer-company { font-size: 16px; font-weight: 600; color: #fff; }
.footer-slogan { margin-top: 4px; font-size: 12.5px; font-weight: 400; color: #a89384; letter-spacing: 4px; }
.footer-info { text-align: right; }
.footer-info p { font-size: 13.5px; margin-bottom: 6px; }
.footer-info a { color: inherit; }
.footer-info a:hover { color: #fff; }
.footer-bar {
  display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap;
  padding: 16px 0; border-top: 1px solid rgba(255,255,255,.10);
}
.footer-copy, .footer-beian { font-size: 13px; color: #a2968e; }
.footer-beian a { color: #bcb0a7; }
.footer-beian a:hover { color: #fff; text-decoration: underline; }
.footer-beian .sep { margin: 0 8px; color: #6b5f57; }
@media (max-width: 992px) {
  .footer-main { flex-direction: column; align-items: flex-start; }
  .footer-info { text-align: left; }
  .footer-bar { justify-content: center; text-align: center; }
}

/* 品牌口号（关于我们） */
.about-slogan { margin: 22px 0 4px; font-size: 21px; font-weight: 700; color: var(--brand-red); letter-spacing: 6px; }

/* 关于我们：内页头艺术字宣言 */
.about-hero-inner { display: flex; align-items: center; justify-content: space-between; gap: 56px; }
.about-hero-text { flex: 1; min-width: 0; }
.about-hero-motto { flex-shrink: 0; }
.motto-lead { margin: 0 0 6px; font-size: 19px; font-weight: 400; color: rgba(255,255,255,.82); letter-spacing: 2px; }
.motto-main { margin: 0; font-size: 56px; font-weight: 800; line-height: 1.18; letter-spacing: 4px; color: #fff; }
.motto-main em { font-style: normal; color: #F0B018; }
.motto-note { margin: 20px 0 0; font-size: 14px; color: rgba(255,255,255,.55); letter-spacing: 1px; }
@media (max-width: 992px) {
  .about-hero-inner { flex-direction: column; align-items: flex-start; gap: 30px; }
  .motto-main { font-size: 40px; }
}

/* ============ 入场动画 ============ */
.fade-up { opacity: 0; transform: translateY(20px); transition: opacity .6s ease, transform .6s ease; }
.fade-up.is-visible { opacity: 1; transform: translateY(0); }

/* ============ 响应式 ============ */
@media (max-width: 992px) {
  .hero-inner { flex-direction: column; text-align: center; padding: 64px 24px; }
  .hero-text h1 { font-size: 36px; }
  .hero-sub { margin-left: auto; margin-right: auto; }
  .hero-actions { justify-content: center; }
  .hero-visual { margin-top: 12px; }
  .industries-grid { grid-template-columns: repeat(2, 1fr); }
  .cases-grid { grid-template-columns: repeat(2, 1fr); }
  .about-inner { grid-template-columns: 1fr; }
  .contact-inner { flex-direction: column; text-align: center; }
  .contact-qr { justify-content: center; }
  .nav-menu { display: none; }
  .nav-toggle { display: flex; }
  .nav-menu.open {
    display: flex; flex-direction: column; position: absolute; top: 68px; left: 0; right: 0;
    background: #fff; padding: 20px 24px; gap: 18px; border-bottom: 1px solid var(--line);
    box-shadow: 0 20px 40px rgba(0, 0, 0, .08);
  }
}

@media (max-width: 640px) {
  .hero-text h1 { font-size: 29px; }
  .stats-grid { flex-wrap: wrap; gap: 24px; }
  .stat { flex: 1 1 45%; }
  .industries-grid { grid-template-columns: 1fr; }
  .cases-grid { grid-template-columns: 1fr; }
  .section { padding: 56px 0; }
  .section-head h2 { font-size: 26px; }
}

/* ============ 内页通用 ============ */
.page-hero {
  background:
    radial-gradient(760px 480px at 85% 12%, rgba(240, 176, 24, .14), transparent 58%),
    radial-gradient(640px 480px at 10% 90%, rgba(224, 86, 56, .26), transparent 56%),
    linear-gradient(135deg, #3a2618 0%, #562f1c 50%, #C03820 120%);
  color: #fff; padding: 72px 0 60px;
}
.page-hero .container { max-width: var(--container); }
.crumb { font-size: 13px; color: #e8c8c0; margin-bottom: 16px; letter-spacing: 1px; }
.crumb a { color: #e8c8c0; }
.crumb a:hover { color: #fff; }
.crumb .sep { margin: 0 8px; color: rgba(255,255,255,.4); }
.page-hero h1 { font-size: 38px; line-height: 1.3; margin-bottom: 16px; }
.page-hero .lead { font-size: 17px; color: #e8dcd7; max-width: 680px; }

/* 内页正文容器 */
.page-body { padding: 72px 0; }

/* ============ 解决方案（行业场景） ============ */
.solution-block { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; margin-bottom: 48px; }
.solution-card {
  background: var(--white); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 32px 30px; transition: all .3s ease;
}
.solution-card:hover { border-color: var(--line-hover); box-shadow: var(--shadow-hover); transform: translateY(-4px); }
.solution-card h3 { font-size: 20px; margin-bottom: 6px; }
.solution-card .solution-tag {
  display: inline-block; font-size: 12px; font-weight: 600; color: var(--brand-red);
  background: rgba(192, 56, 32, .08); border: 1px solid rgba(192, 56, 32, .25);
  padding: 2px 12px; border-radius: 999px; margin-bottom: 14px;
}
.solution-card .pain { color: var(--ink-soft); font-size: 14.5px; margin-bottom: 16px; }
.solution-card ul { list-style: none; margin: 0; }
.solution-card ul li { font-size: 14px; color: var(--muted); padding: 6px 0 6px 22px; position: relative; }
.solution-card ul li::before { content: "✓"; position: absolute; left: 0; color: var(--brand-red); font-weight: 700; }

/* ============ 产品与服务 ============ */
.product-tabs { display: flex; gap: 12px; flex-wrap: wrap; justify-content: center; margin-bottom: 40px; }
.product-tab {
  padding: 10px 22px; border-radius: 999px; border: 1.5px solid var(--line);
  background: var(--white); color: var(--ink-soft); font-size: 15px; font-weight: 600; cursor: pointer;
  transition: all .2s ease;
}
.product-tab:hover { border-color: var(--brand-red); color: var(--brand-red); }
.product-tab.active { background: var(--brand-red); color: #fff; border-color: var(--brand-red); }
.module-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.module-card {
  background: var(--white); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px 26px; transition: all .3s ease; display: none;
}
.module-card.show { display: block; }
.module-card:hover { border-color: var(--line-hover); box-shadow: var(--shadow-hover); transform: translateY(-4px); }
.module-card h3 { font-size: 19px; margin-bottom: 10px; color: var(--brand-red); }
.module-card .module-pos { font-size: 13px; color: var(--muted); margin-bottom: 14px; }
.module-card .module-func { font-size: 14px; color: var(--ink-soft); margin-bottom: 14px; }
.module-card .module-value { font-size: 14px; color: var(--brand-red); font-weight: 600; }
.module-card .module-value::before { content: "价值："; font-weight: 400; color: var(--muted); }
.consult-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-bottom: 56px; }
.consult-card { background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 22px; transition: all .3s ease; }
.consult-card:hover { border-color: var(--line-hover); box-shadow: var(--shadow-hover); transform: translateY(-4px); }
.consult-card h3 { font-size: 17px; margin-bottom: 10px; }
.consult-card p { font-size: 14px; color: var(--ink-soft); }

/* ============ 案例页 ============ */
.case-filters { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; margin-bottom: 40px; }
.case-filter {
  padding: 8px 18px; border-radius: 999px; border: 1.5px solid var(--line);
  background: var(--white); color: var(--ink-soft); font-size: 14px; cursor: pointer; transition: all .2s ease;
}
.case-filter:hover { border-color: var(--brand-red); color: var(--brand-red); }
.case-filter.active { background: var(--brand-red); color: #fff; border-color: var(--brand-red); }
.case-detail-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 28px; }
.case-detail {
  background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); padding: 34px 30px;
  transition: all .3s ease; display: none;
}
.case-detail.show { display: flex; flex-direction: column; }
.case-detail:hover { border-color: var(--line-hover); box-shadow: var(--shadow-hover); transform: translateY(-4px); }
.case-detail h3 { font-size: 21px; margin-bottom: 14px; }
.case-detail .case-meta { font-size: 13px; color: var(--muted); margin-bottom: 18px; }
.case-detail h4 { font-size: 15px; color: var(--brand-red); margin: 18px 0 8px; }
.case-detail p, .case-detail li { font-size: 14.5px; color: var(--ink-soft); }
.case-detail ul { list-style: none; }
.case-detail ul li { padding: 4px 0 4px 20px; position: relative; }
.case-detail ul li::before { content: "·"; position: absolute; left: 6px; color: var(--brand-red); font-weight: 700; }
.case-value { margin-top: 18px; padding: 14px 18px; background: var(--bg); border-radius: 10px; font-weight: 600; color: var(--brand-red); }
.case-detail .case-value { margin-top: auto; }

/* 案例 CTA 卡片 */
.case-cta {
  background:
    radial-gradient(520px 360px at 80% 12%, rgba(240, 176, 24, .18), transparent 58%),
    linear-gradient(135deg, #3a2618 0%, #562f1c 52%, #C03820 120%);
  color: #fff; border-radius: var(--radius); padding: 40px 30px;
  display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center;
  transition: all .3s ease;
}
.case-cta:hover { box-shadow: var(--shadow); transform: translateY(-4px); }
.case-cta h3 { font-size: 22px; color: #fff; margin-bottom: 12px; }
.case-cta p { font-size: 15px; color: #e8dcd7; margin-bottom: 22px; }
.case-cta .btn { background: #fff; color: var(--brand-red); }
.case-cta .btn:hover { background: #fdebe8; color: var(--brand-red); box-shadow: none; }

/* ============ 精益咨询页 ============ */
.lean-flow { position: relative; display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin: 40px 0; }
.lean-flow::before {
  content: ""; position: absolute; top: 25px; left: 12.5%; right: 12.5%; height: 2px;
  background: linear-gradient(90deg, rgba(192,56,32,.15), rgba(192,56,32,.5) 18%, rgba(192,56,32,.5) 82%, rgba(192,56,32,.15));
}
.lean-step { position: relative; text-align: center; display: flex; flex-direction: column; }
.lean-step .step-num {
  position: relative; z-index: 1;
  width: 52px; height: 52px; border-radius: 50%; background: var(--brand-red); color: #fff;
  display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 20px; margin: 0 auto 14px;
  box-shadow: 0 0 0 5px var(--bg);
}
.lean-step h3 { font-size: 18px; margin-bottom: 8px; }
.lean-step p { font-size: 14.5px; color: var(--muted); min-height: 50px; }
.lean-step .step-out {
  font-size: 13.5px; color: var(--brand-red); font-weight: 600;
  margin-top: 0; padding-top: 12px; line-height: 1.5;
  border-top: 1px dashed var(--line);
}
/* 窄屏：时间轴转纵向（轴在左、内容在右） */
@media (max-width: 992px) {
  .lean-flow { grid-template-columns: 1fr; gap: 28px; }
  .lean-flow::before {
    top: 10px; bottom: 10px; left: 25px; right: auto; width: 2px; height: auto;
    background: linear-gradient(180deg, rgba(192,56,32,.15), rgba(192,56,32,.5) 12%, rgba(192,56,32,.5) 88%, rgba(192,56,32,.15));
  }
  .lean-step { display: grid; grid-template-columns: 52px 1fr; column-gap: 18px; text-align: left; align-items: start; }
  .lean-step .step-num { grid-column: 1; grid-row: 1 / span 3; margin: 0; }
  .lean-step h3, .lean-step p, .lean-step .step-out { grid-column: 2; }
  .lean-step .step-out { margin-top: 4px; }
}

/* ============ 关于我们 ============ */
.about-promise { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 32px; }
.promise-card { background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 22px; text-align: center; transition: all .3s ease; }
.promise-card:hover { border-color: var(--line-hover); box-shadow: var(--shadow-hover); transform: translateY(-4px); }
.promise-card h3 { font-size: 17px; margin-bottom: 8px; color: var(--brand-red); }
.promise-card p { font-size: 14px; color: var(--ink-soft); }

/* ============ 联系 / 免费诊断 ============ */
.contact-layout { display: grid; grid-template-columns: 1.05fr .95fr; gap: 48px; align-items: start; }
.diag-form { background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); padding: 34px 32px; }
.diag-form .form-group { margin-bottom: 18px; }
.diag-form label { display: block; font-size: 14px; font-weight: 600; margin-bottom: 8px; color: var(--ink); }
.diag-form input, .diag-form select, .diag-form textarea {
  width: 100%; padding: 12px 14px; border: 1px solid var(--line); border-radius: 10px;
  font-size: 15px; font-family: inherit; color: var(--ink); background: var(--bg);
  transition: border-color .2s ease;
}
.diag-form input:focus, .diag-form select:focus, .diag-form textarea:focus { outline: none; border-color: var(--brand-red); background: #fff; }
.diag-form textarea { resize: vertical; min-height: 96px; }
/* 下拉框美化：去原生箭头，换品牌色箭头 */
.diag-form select, .tool-row select {
  appearance: none; -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23C03820' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  background-size: 14px;
  padding-right: 40px;
  cursor: pointer;
}
/* 自定义下拉面板（增强原生 select：隐藏原生控件，自绘大点击区选项） */
.select-native-hidden { display: none !important; }
.select-ui { position: relative; }
.select-ui-btn {
  position: relative; width: 100%; padding: 12px 40px 12px 14px;
  border: 1px solid var(--line); border-radius: 10px;
  font-size: 15px; font-family: inherit; color: var(--ink); background: var(--bg);
  text-align: left; cursor: pointer; transition: border-color .2s ease, background .2s ease;
}
.select-ui-btn::after {
  content: ""; position: absolute; right: 16px; top: 50%; margin-top: -5px;
  width: 8px; height: 8px;
  border-right: 2px solid var(--brand-red); border-bottom: 2px solid var(--brand-red);
  transform: rotate(45deg); transition: transform .2s ease;
}
.select-ui-btn.placeholder { color: var(--muted); }
.select-ui-btn:hover, .select-ui-btn.open { border-color: var(--brand-red); background: #fff; }
.select-ui-btn.open::after { transform: rotate(225deg); margin-top: -1px; }
.select-ui-list {
  display: none; position: absolute; top: calc(100% + 6px); left: 0; right: 0; z-index: 60;
  background: #fff; border: 1px solid var(--line); border-radius: 10px;
  box-shadow: 0 16px 40px rgba(60, 30, 15, .14);
  padding: 6px; max-height: 264px; overflow-y: auto;
}
.select-ui-list.open { display: block; }
.select-ui-item {
  padding: 11px 14px; font-size: 15px; color: var(--ink); border-radius: 8px; cursor: pointer;
  transition: background .15s ease, color .15s ease;
}
.select-ui-item:hover { background: rgba(192, 56, 32, .08); color: var(--brand-red); }
.select-ui-item.selected { background: var(--brand-red); color: #fff; }
.form-hint { font-size: 12.5px; color: var(--muted); margin-top: 12px; }
.form-promise { margin-bottom: 22px; padding: 12px 16px; font-size: 13.5px; color: #1f8a4c; background: rgba(31,138,76,.08); border: 1px solid rgba(31,138,76,.25); border-radius: 10px; }
.thank-page { padding: 8px 0; }
.thank-page h2 { font-size: 24px; margin-bottom: 14px; }
.thank-lead { font-size: 15px; color: var(--ink-soft); margin-bottom: 22px; }
.thank-next { display: flex; flex-direction: column; gap: 14px; align-items: flex-start; }
.thank-next .btn { width: 100%; }

/* ============ 移动端底部固定转化条 ============ */
.mobile-cta { position: fixed; left: 0; right: 0; bottom: 0; z-index: 200; display: none; gap: 10px; padding: 10px 12px calc(10px + env(safe-area-inset-bottom)); background: #fff; border-top: 1px solid var(--line); box-shadow: 0 -8px 24px rgba(0, 0, 0, .08); }
.mobile-cta a { flex: 1; display: flex; align-items: center; justify-content: center; height: 44px; border-radius: 999px; font-size: 15px; font-weight: 600; border: 1.5px solid var(--brand-red); color: var(--brand-red); background: #fff; }
.mobile-cta a.mobile-cta-primary { background: var(--brand-red); color: #fff; border-color: var(--brand-red); }
@media (max-width: 768px) {
  .mobile-cta { display: flex; }
  body { padding-bottom: 76px; }
}

/* 必填标记 */
.req { font-style: normal; color: var(--brand-red); }

/* 联系页：右侧深色联系卡 + 服务流程卡 */
.contact-card {
  background:
    radial-gradient(560px 380px at 82% 10%, rgba(240, 176, 24, .18), transparent 58%),
    linear-gradient(135deg, #3a2618 0%, #562f1c 52%, #C03820 120%);
  color: #fff; border-radius: var(--radius); padding: 34px 30px;
}
.contact-card h2 { font-size: 24px; margin-bottom: 20px; color: #fff; }
.contact-row { margin-bottom: 12px; font-size: 15px; color: #f3d9d3; }
.contact-row strong { color: #ffd6cc; margin-right: 8px; font-weight: 600; }
.contact-row a { color: #fff; font-weight: 600; }
.contact-card .contact-qr { margin-top: 8px; }
.flow-card {
  background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px 30px; margin-top: 24px;
}
.flow-card h3 { font-size: 17px; margin-bottom: 12px; }
.flow-card p { font-size: 14.5px; color: var(--ink-soft); }
.flow-card .flow-note { font-size: 14px; color: var(--muted); margin-top: 8px; }

/* 表单同意行 */
.form-agree { display: flex; align-items: flex-start; gap: 10px; margin: 16px 0 18px; }
.form-agree input[type="checkbox"] {
  width: 18px; height: 18px; padding: 0; margin: 2px 0 0; flex-shrink: 0;
  accent-color: var(--brand-red); cursor: pointer;
}
.form-agree label {
  font-size: 13px; font-weight: 400; color: var(--muted);
  line-height: 1.6; margin: 0; cursor: pointer;
}
.form-agree label a { color: var(--brand-red); }

/* ============ 免费工具 ============ */
.tool-wrap { max-width: 760px; margin: 0 auto; }
.tool-panel {
  background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); padding: 36px 34px; margin-bottom: 32px;
}
.tool-panel h2 { font-size: 24px; margin-bottom: 8px; }
.tool-panel .tool-desc { color: var(--muted); font-size: 15px; margin-bottom: 26px; }
.tool-row { margin-bottom: 18px; }
.tool-row label { display: block; font-size: 14px; font-weight: 600; margin-bottom: 8px; color: var(--ink); }
.tool-row input, .tool-row select {
  width: 100%; padding: 12px 14px; border: 1px solid var(--line); border-radius: 10px;
  font-size: 15px; font-family: inherit; color: var(--ink); background: var(--bg); transition: border-color .2s ease;
}
.tool-row input:focus, .tool-row select:focus { outline: none; border-color: var(--brand-red); background: #fff; }
.tool-actions { display: flex; gap: 14px; margin-top: 26px; }
.tool-result { display: none; margin-top: 26px; padding: 26px 28px; border-radius: var(--radius); background: var(--bg); border: 1px solid var(--line); }
.tool-result.show { display: block; }
.tool-result h3 { font-size: 18px; margin-bottom: 16px; }
.result-meter { display: flex; align-items: baseline; gap: 8px; margin-bottom: 8px; }
.result-meter .big { font-size: 44px; font-weight: 800; color: var(--brand-red); }
.result-meter .unit { font-size: 20px; font-weight: 700; color: var(--brand-red); }
.result-level { display: inline-block; font-size: 13px; font-weight: 700; padding: 4px 14px; border-radius: 999px; margin-bottom: 16px; }
.result-level.low { background: #e8f4ec; color: #1f8a4c; }
.result-level.mid { background: #fdf3e0; color: #c07a10; }
.result-level.high { background: #fdebe8; color: var(--brand-red); }
.tool-result ul { list-style: none; }
.tool-result ul li { font-size: 14.5px; color: var(--ink-soft); padding: 6px 0 6px 22px; position: relative; }
.tool-result ul li::before { content: "→"; position: absolute; left: 0; color: var(--brand-red); font-weight: 700; }
.tool-cta { margin-top: 20px; padding-top: 18px; border-top: 1px dashed var(--line); font-size: 14px; color: var(--muted); }
.tool-cta .btn { margin-top: 12px; }

/* ============ 响应式补充 ============ */
@media (max-width: 992px) {
  .solution-block { grid-template-columns: 1fr; }
  .module-grid { grid-template-columns: repeat(2, 1fr); }
  .consult-grid { grid-template-columns: repeat(2, 1fr); }
  .about-promise { grid-template-columns: repeat(2, 1fr); }
  .contact-layout { grid-template-columns: 1fr; }
  .method-steps { grid-template-columns: 1fr; }
  .architecture-points { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .module-grid { grid-template-columns: 1fr; }
  .consult-grid { grid-template-columns: 1fr; }
  .about-promise { grid-template-columns: 1fr; }
  .method-steps { grid-template-columns: 1fr; }
  .architecture-points { grid-template-columns: 1fr; }
  .page-hero h1 { font-size: 29px; }
  .tool-panel { padding: 28px 22px; }
}

/* ============ 角色分流内联 tab（首页） ============ */
.role-tabs { background: var(--white); }
.role-tab-btns { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; margin-bottom: 28px; }
.role-tab-btn {
  padding: 10px 22px; border-radius: 999px; border: 1.5px solid var(--line);
  background: var(--white); color: var(--ink-soft); font-size: 15px; font-weight: 600; cursor: pointer;
  transition: all .2s ease;
}
.role-tab-btn:hover { border-color: var(--brand-red); color: var(--brand-red); }
.role-tab-btn.active { background: var(--brand-red); color: #fff; border-color: var(--brand-red); }
.role-panels { max-width: 760px; margin: 0 auto; }
.role-panel { display: none; background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px 30px; }
.role-panel.active { display: block; }
.role-panel-pain { font-size: 15px; color: var(--ink-soft); font-weight: 600; margin-bottom: 14px; }
.role-panel-list { list-style: none; margin-bottom: 18px; }
.role-panel-list li { font-size: 14.5px; color: var(--ink-soft); padding: 5px 0 5px 22px; position: relative; }
.role-panel-list li::before { content: "→"; position: absolute; left: 0; color: var(--brand-red); font-weight: 700; }

/* ============ 技术底座 ============ */
.tech-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.tech-card { background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 24px; transition: all .3s ease; }
.tech-card:hover { border-color: var(--line-hover); box-shadow: var(--shadow-hover); transform: translateY(-4px); }
.tech-card h3 { font-size: 17px; margin-bottom: 8px; color: var(--brand-red); }
.tech-card p { font-size: 14px; color: var(--ink-soft); }

/* ============ 资质与团队 ============ */
.cred-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.cred-card { background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 22px; transition: all .3s ease; }
.cred-card:hover { border-color: var(--line-hover); box-shadow: var(--shadow-hover); transform: translateY(-4px); }
.cred-card h3 { font-size: 17px; margin-bottom: 8px; color: var(--brand-red); }
.cred-card p { font-size: 14px; color: var(--ink-soft); }
.about-team { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.team-card { background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 24px; transition: all .3s ease; }
.team-card:hover { border-color: var(--line-hover); box-shadow: var(--shadow-hover); transform: translateY(-4px); }
.team-card h3 { font-size: 18px; margin-bottom: 10px; color: var(--brand-red); }
.team-card p { font-size: 14.5px; color: var(--ink-soft); }
.team-card ul { list-style: none; }
.team-card ul li { font-size: 14.5px; color: var(--ink-soft); padding: 5px 0 5px 20px; position: relative; }
.team-card ul li::before { content: "·"; position: absolute; left: 6px; color: var(--brand-red); font-weight: 700; }

/* ============ 进行中项目 ============ */
/* ============ 重做响应式补充 ============ */
@media (max-width: 992px) {
  .tech-grid { grid-template-columns: repeat(2, 1fr); }
  .cred-grid { grid-template-columns: repeat(2, 1fr); }
  .about-team { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .tech-grid { grid-template-columns: 1fr; }
  .cred-grid { grid-template-columns: 1fr; }
  .role-tab-btn { padding: 8px 16px; font-size: 14px; }
  .role-panel { padding: 24px 20px; }
}

/* ============ UI 升级：首屏驾驶舱与品牌 ============ */
.hero-visual { flex-shrink: 0; display: flex; flex-direction: column; align-items: center; }
.dash-wrap { position: relative; width: 430px; max-width: 100%; }
.dashboard {
  background: linear-gradient(160deg, rgba(58,32,20,.72), rgba(40,20,12,.80));
  border: 1px solid rgba(255,255,255,.14);
  border-radius: 20px;
  padding: 18px;
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 30px 70px rgba(20, 8, 4, .45);
}
.dash-top { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.dash-dots i { display: inline-block; width: 9px; height: 9px; border-radius: 50%; background: rgba(255,255,255,.22); margin-right: 5px; }
.dash-title { font-size: 13px; font-weight: 600; color: #fff; letter-spacing: 1px; }
.dash-live { margin-left: auto; display: inline-flex; align-items: center; gap: 5px; font-size: 11px; color: #f0c9c0; }
.dash-live i { width: 7px; height: 7px; border-radius: 50%; background: #4cd47c; box-shadow: 0 0 8px #4cd47c; animation: dashBlink 1.6s ease-in-out infinite; }
@keyframes dashBlink { 0%, 100% { opacity: 1; } 50% { opacity: .35; } }

.dash-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.dash-card {
  background: rgba(255,255,255,.07);
  border: 1px solid rgba(255,255,255,.10);
  border-radius: 14px;
  padding: 13px 14px;
  transition: background .3s ease, border-color .3s ease;
}
.dash-card:hover { background: rgba(255,255,255,.10); border-color: rgba(240,176,24,.35); }
.dash-wide { grid-column: span 2; }
.dash-label { font-size: 11px; color: #d8bfae; margin-bottom: 8px; letter-spacing: .5px; }
.dash-num { font-size: 26px; font-weight: 800; color: #fff; line-height: 1; font-variant-numeric: tabular-nums; }
.dash-num em { font-style: normal; font-size: 13px; color: #F0B018; margin-left: 2px; }
.dash-num.sm { font-size: 22px; }
.dash-num.sm i { font-style: normal; font-size: 12px; color: #d8bfae; margin-left: 3px; font-weight: 400; }
.dash-sub { font-size: 11px; color: #b39684; margin-top: 6px; }
.dash-flex { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.dash-ring { width: 44px; height: 44px; }

.dash-bars { display: flex; align-items: flex-end; gap: 4px; height: 34px; margin-top: 8px; }
.dash-bars i { flex: 1; min-height: 4px; background: linear-gradient(180deg, #F0B018, rgba(240,176,24,.25)); border-radius: 3px 3px 0 0; }
.dash-bars i:last-child { background: linear-gradient(180deg, #e05638, #C03820); }

.dash-line { display: flex; align-items: center; gap: 6px; }
.dash-step { display: inline-flex; align-items: center; gap: 5px; font-size: 11.5px; color: #e8d5c8; white-space: nowrap; }
.dash-step i { width: 9px; height: 9px; border-radius: 50%; flex-shrink: 0; }
.dash-step.done i { background: #4cd47c; box-shadow: 0 0 6px rgba(76,212,124,.8); }
.dash-step.run i { background: #F0B018; box-shadow: 0 0 8px rgba(240,176,24,.9); animation: dashBlink 1.4s ease-in-out infinite; }
.dash-step.idle i { background: rgba(255,255,255,.3); }
.dash-bar { flex: 1; min-width: 8px; height: 2px; background: linear-gradient(90deg, rgba(255,255,255,.25), rgba(255,255,255,.08)); border-radius: 2px; }

.dash-note { margin-top: 10px; font-size: 10px; color: rgba(255,255,255,.32); text-align: right; }

.dash-float {
  position: absolute; top: -16px; right: -14px; z-index: 2;
  background: linear-gradient(135deg, #e05638, #C03820);
  color: #fff; font-size: 12px; font-weight: 600;
  padding: 9px 16px; border-radius: 999px;
  box-shadow: 0 12px 28px rgba(192,56,32,.45);
  animation: heroFloat 5s ease-in-out infinite;
}

@keyframes heroFloat { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }

/* ============ UI 升级：图标徽章 ============ */
.industry-icon, .tool-icon, .tech-icon, .cred-icon, .team-icon, .about-icon, .arch-icon, .lean-icon {
  display: inline-flex; width: 46px; height: 46px; border-radius: 12px;
  background: rgba(192,56,32,.08); align-items: center; justify-content: center;
  margin-bottom: 14px; color: var(--brand-red); flex-shrink: 0;
  transition: all .3s ease;
}
.industry-icon img, .tool-icon img, .tech-icon img, .cred-icon img, .team-icon img, .about-icon img, .arch-icon img, .lean-icon img { width: 24px; height: 24px; }
.industry-card:hover .industry-icon, .tool-card:hover .tool-icon, .tech-card:hover .tech-icon,
.cred-card:hover .cred-icon, .team-card:hover .team-icon, .consult-card:hover .lean-icon { background: var(--brand-red); color: #fff; }

/* ============ UI 升级：角色 tab 图标 ============ */
.role-tab-btn { display: inline-flex; align-items: center; gap: 8px; }
.role-tab-btn img { width: 18px; height: 18px; }
.role-tab-btn.active img { filter: brightness(0) invert(1); }

/* ============ UI 升级：卡片 hover 层次增强 ============ */
.industry-card, .tech-card, .cred-card, .team-card, .tool-card {
  transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
}

/* ============ UI 升级响应式 ============ */
@media (max-width: 640px) {
  .dash-wrap { width: 100%; }
  .dash-num { font-size: 22px; }
  .dash-float { right: 0; top: -12px; font-size: 11px; padding: 7px 12px; }
}

/* ============ 产品架构分层栈（替代静态架构图） ============ */
.arch-stack { max-width: 880px; margin: 0 auto; }
.arch-modules { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.arch-module {
  display: flex; align-items: center; gap: 12px;
  background: var(--white); border: 1px solid var(--line); border-radius: 12px;
  padding: 13px 15px; transition: all .3s ease;
}
.arch-module:hover { border-color: var(--line-hover); box-shadow: var(--shadow-hover); transform: translateY(-4px); }
.arch-module h4 { font-size: 14.5px; font-weight: 600; }
.mod-icon {
  display: inline-flex; width: 40px; height: 40px; border-radius: 11px;
  background: rgba(192,56,32,.08); align-items: center; justify-content: center;
  color: var(--brand-red); flex-shrink: 0; transition: all .3s ease;
}
.mod-icon img { width: 21px; height: 21px; }
.arch-module:hover .mod-icon { background: var(--brand-red); color: #fff; }

.arch-connector { text-align: center; }
.arch-chevron {
  display: block; width: 11px; height: 11px; margin: 22px auto 8px;
  border-right: 2.5px solid var(--brand-red); border-bottom: 2.5px solid var(--brand-red);
  transform: rotate(45deg); border-radius: 2px;
}
.arch-connector p { font-size: 13px; color: var(--muted); letter-spacing: 1px; }

.arch-core {
  margin-top: 16px;
  display: flex; align-items: center; justify-content: center; gap: 18px;
  background:
    radial-gradient(500px 260px at 88% 0%, rgba(240,176,24,.25), transparent 60%),
    linear-gradient(135deg, #e05638 0%, #C03820 55%, #9e2d18 100%);
  border-radius: 16px; padding: 24px 30px; color: #fff;
  box-shadow: 0 18px 44px rgba(192,56,32,.28);
}
.arch-core-icon {
  display: inline-flex; width: 52px; height: 52px; border-radius: 14px;
  background: rgba(255,255,255,.16); align-items: center; justify-content: center; flex-shrink: 0;
}
.arch-core-icon img { width: 28px; height: 28px; filter: brightness(0) invert(1); }
.arch-core h3 { font-size: 21px; color: #fff; margin-bottom: 4px; }
.arch-core p { color: #ffe3d8; font-size: 13px; letter-spacing: .5px; }

@media (max-width: 992px) {
  .arch-modules { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .arch-modules { grid-template-columns: 1fr; }
  .arch-core { flex-direction: column; text-align: center; }
}

/* ============ 常见问题 ============ */
.faq-wrap { max-width: 820px; margin: 0 auto; }
.faq-group-title { font-size: 22px; margin: 36px 0 16px; padding-left: 14px; border-left: 4px solid var(--brand-red); }
.faq-list { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: var(--white); }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-item:last-child { border-bottom: none; }
.faq-q {
  width: 100%; text-align: left; padding: 18px 22px; background: none; border: none; cursor: pointer;
  font-size: 16px; font-weight: 600; color: var(--ink); font-family: inherit;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
}
.faq-q::after { content: "+"; font-size: 22px; color: var(--brand-red); font-weight: 400; transition: transform .25s ease; flex-shrink: 0; }
.faq-item.open .faq-q::after { transform: rotate(45deg); }
.faq-a { display: none; padding: 0 22px 20px; }
.faq-item.open .faq-a { display: block; }
.faq-q:hover { color: var(--brand-red); }

/* ============ 卡片 hover 反色（小卡：整卡变品牌红，图标文字变白） ============ */
.arch-point:hover, .industry-card:hover, .about-card:hover, .case-card:hover, .arch-module:hover,
.tech-card:hover, .promise-card:hover, .team-card:hover, .cred-card:hover, .consult-card:hover, .tool-card:hover {
  background: linear-gradient(135deg, #e05638 0%, #C03820 55%, #9e2d18 100%);
  border-color: transparent;
  box-shadow: 0 18px 44px rgba(192, 56, 32, .30);
  transform: translateY(-4px);
}
.arch-point:hover h3, .industry-card:hover h3, .about-card:hover h3, .case-card:hover h3,
.arch-module:hover h4, .tech-card:hover h3, .promise-card:hover h3, .team-card:hover h3,
.cred-card:hover h3, .consult-card:hover h3, .tool-card:hover h3 { color: #fff; }
.arch-point:hover p, .industry-card:hover p, .about-card:hover p, .case-card:hover p,
.arch-module:hover p, .tech-card:hover p, .promise-card:hover p, .team-card:hover p,
.cred-card:hover p, .consult-card:hover p, .tool-card:hover p { color: #ffe3d8; }
.arch-point:hover .arch-icon, .industry-card:hover .industry-icon, .about-card:hover .about-icon,
.arch-module:hover .mod-icon, .tech-card:hover .tech-icon, .team-card:hover .team-icon,
.cred-card:hover .cred-icon, .consult-card:hover .lean-icon, .tool-card:hover .tool-icon {
  background: rgba(255, 255, 255, .16); color: #fff;
}
.case-card:hover .case-tag, .tool-card:hover .tool-tag {
  background: rgba(255, 255, 255, .14); border-color: rgba(255, 255, 255, .30); color: #fff;
}
.case-card:hover .case-metric { color: #ffe3d8; }
.case-card:hover .case-metric strong { color: #fff; }
.case-card:hover .case-status { color: #fff; background: rgba(255, 255, 255, .14); border-color: rgba(255, 255, 255, .30); }
.tool-card:hover .tool-link { color: #fff; }
.faq-a p { font-size: 14.5px; color: var(--ink-soft); line-height: 1.8; }