/* ============================================================
   普华捷思智能科技有限公司 — 官网样式
   设计基调：PwC 编辑式排版 + 品牌橙（暖调）+ 少量品牌蓝点缀
   色彩来源：公司 Logo（橙 #F06000 / 蓝 #0070C0 · #00A0E0 / 金星 #FFD400）
   ============================================================ */

:root {
  /* 品牌色 —— 橙为主 */
  --brand-700: #a8410a;
  --brand-600: #c9500c;
  --brand-500: #d95d00;
  --brand-400: #e8741a;
  --brand-100: #fdf1e6;
  --brand-50: #fffaf5;

  /* 深色区块（暖炭，替代原深蓝） */
  --navy-900: #241a14;
  --navy-800: #33251c;
  --navy-700: #45322a;

  /* 主色位（沿用原变量名，值改为品牌橙，全局换肤） */
  --blue-600: #d95d00;
  --blue-500: #e8741a;
  --blue-100: #fdf1e6;

  /* 辅助色 */
  --teal-500: #e0a01a;
  --amber-500: #f0b429;
  --accent-blue: #0070c0;
  --accent-blue-light: #00a0e0;

  /* 中性色（暖灰） */
  --ink-900: #1f1a16;
  --ink-700: #3d352e;
  --ink-500: #6b6058;
  --ink-300: #a89e95;
  --line-200: #e9e2da;
  --line-100: #f3eee8;
  --bg-soft: #faf7f3;
  --white: #ffffff;

  /* 字体 */
  --font-sans: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB",
    "Source Han Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI",
    Roboto, sans-serif;
  --font-serif: "Songti SC", "Source Han Serif SC", "Times New Roman",
    "SimSun", serif;
  --font-en: "Inter", "Helvetica Neue", Arial, sans-serif;

  /* 尺寸 */
  --wrap: 1240px;
  --sec-pad: 104px;
  --radius: 2px;
}

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

html {
  scroll-behavior: soft;
}

body {
  font-family: var(--font-sans);
  color: var(--ink-700);
  background: var(--white);
  font-size: 15px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

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

ul {
  list-style: none;
}

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 32px;
}

/* ---------------- 通用标题 ---------------- */
.sec-label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--blue-600);
  margin-bottom: 20px;
}
.sec-label::before {
  content: "";
  width: 28px;
  height: 2px;
  background: var(--blue-600);
}
.sec-label.on-dark {
  color: var(--blue-500);
}
.sec-label.on-dark::before {
  background: var(--blue-500);
}

.sec-title {
  font-size: 40px;
  line-height: 1.28;
  font-weight: 700;
  color: var(--ink-900);
  letter-spacing: -0.01em;
}
.sec-title .en {
  display: block;
  font-family: var(--font-en);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--ink-300);
  margin-top: 12px;
  text-transform: uppercase;
}
.sec-head {
  max-width: 780px;
  margin-bottom: 56px;
}
.sec-head.center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}
.sec-head.center .sec-label {
  justify-content: center;
}
.sec-desc {
  margin-top: 20px;
  font-size: 16px;
  color: var(--ink-500);
  line-height: 1.85;
}

.on-dark .sec-title,
.sec-title.on-dark {
  color: var(--white);
}
.on-dark .sec-title .en {
  color: rgba(255, 255, 255, 0.45);
}

/* ---------------- 按钮 ---------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 30px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.02em;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
  border-radius: var(--radius);
  font-family: var(--font-sans);
}
.btn .arw {
  transition: transform 0.28s;
}
.btn:hover .arw {
  transform: translateX(4px);
}
.btn-primary {
  background: var(--blue-600);
  color: #fff;
}
.btn-primary:hover {
  background: #a8410a;
  box-shadow: 0 8px 24px rgba(217, 93, 0, 0.32);
}
.btn-ghost {
  border-color: rgba(255, 255, 255, 0.4);
  color: #fff;
}
.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: #fff;
}
.btn-line {
  border-color: var(--line-200);
  color: var(--ink-900);
}
.btn-line:hover {
  border-color: var(--ink-900);
}

/* ---------------- 顶部导航 ---------------- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: transparent;
  transition: background 0.35s, box-shadow 0.35s;
  border-bottom: 1px solid transparent;
}
.header.scrolled {
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(14px);
  box-shadow: 0 1px 0 var(--line-200);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
}
.logo-mark {
  width: auto;
  height: 34px;
  flex: none;
  object-fit: contain;
}
.logo-text {
  line-height: 1.15;
}
.logo-cn {
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.04em;
  transition: color 0.35s;
}
.logo-en {
  font-family: var(--font-en);
  font-size: 9px;
  letter-spacing: 0.14em;
  color: rgba(255, 255, 255, 0.55);
  text-transform: uppercase;
  transition: color 0.35s;
}
.header.scrolled .logo-cn {
  color: var(--ink-900);
}
.header.scrolled .logo-en {
  color: var(--ink-300);
}

.nav {
  display: flex;
  align-items: center;
  gap: 34px;
}
.nav a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.85);
  position: relative;
  padding: 6px 0;
  transition: color 0.3s;
  white-space: nowrap;
}
.nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--blue-500);
  transition: width 0.3s;
}
.nav a:hover::after,
.nav a.active::after {
  width: 100%;
}
.header.scrolled .nav a {
  color: var(--ink-700);
}
.header.scrolled .nav a:hover,
.header.scrolled .nav a.active {
  color: var(--blue-600);
}
.header-cta {
  padding: 10px 22px !important;
  font-size: 13px !important;
  border-radius: var(--radius);
}
.header.scrolled .nav .header-cta {
  color: #fff !important;
  background: var(--blue-600);
}
.header.scrolled .nav .header-cta::after {
  display: none;
}
.header.scrolled .nav .header-cta:hover {
  background: #a8410a !important;
}

.burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: 0;
  padding: 6px;
}
.burger span {
  width: 22px;
  height: 2px;
  background: #fff;
  transition: 0.3s;
}
.header.scrolled .burger span {
  background: var(--ink-900);
}

/* ---------------- Hero ---------------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--navy-900);
  overflow: hidden;
  padding: 140px 0 90px;
}
.hero-bg {
  position: absolute;
  inset: 0;
}
.hero-bg .layer {
  position: absolute;
  inset: 0;
}
.hero-grid-lines {
  background-image: linear-gradient(
      rgba(255, 255, 255, 0.045) 1px,
      transparent 1px
    ),
    linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px);
  background-size: 88px 88px;
  mask-image: radial-gradient(
    ellipse 80% 70% at 70% 40%,
    #000 20%,
    transparent 78%
  );
  -webkit-mask-image: radial-gradient(
    ellipse 80% 70% at 70% 40%,
    #000 20%,
    transparent 78%
  );
}
.hero-glow-a {
  background: radial-gradient(
    ellipse 55% 60% at 78% 30%,
    rgba(217, 93, 0, 0.5),
    transparent 65%
  );
}
.hero-glow-b {
  background: radial-gradient(
    ellipse 45% 50% at 12% 78%,
    rgba(0, 112, 192, 0.12),
    transparent 68%
  );
}
.hero-glow-c {
  background: radial-gradient(
    ellipse 40% 40% at 55% 92%,
    rgba(242, 169, 0, 0.14),
    transparent 70%
  );
}

.hero-inner {
  position: relative;
  z-index: 2;
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-en);
  font-size: 11px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--blue-500);
  margin-bottom: 30px;
  padding: 8px 16px;
  border: 1px solid rgba(232, 116, 26, 0.35);
  border-radius: 100px;
  background: rgba(232, 116, 26, 0.08);
}
.hero-eyebrow i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--blue-500);
  animation: pulse 2.2s infinite;
}
@keyframes pulse {
  0%,
  100% {
    opacity: 1;
    box-shadow: 0 0 0 0 rgba(232, 116, 26, 0.55);
  }
  50% {
    opacity: 0.6;
    box-shadow: 0 0 0 7px rgba(232, 116, 26, 0);
  }
}

.hero h1 {
  font-size: 62px;
  line-height: 1.16;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.02em;
  max-width: 15em;
}
.hero h1 .grad {
  background: linear-gradient(100deg, #f0a05a 0%, #f0b429 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero h1 em {
  font-style: normal;
  display: block;
  font-family: var(--font-en);
  font-size: 17px;
  font-weight: 400;
  letter-spacing: 0.05em;
  color: rgba(255, 255, 255, 0.5);
  margin-top: 20px;
  text-transform: none;
}
.hero-lead {
  margin-top: 30px;
  font-size: 17px;
  line-height: 1.9;
  color: rgba(255, 255, 255, 0.72);
  max-width: 620px;
}
.hero-actions {
  margin-top: 44px;
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-stats {
  margin-top: 84px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.12);
}
.hero-stat {
  background: rgba(36, 26, 20, 0.55);
  padding: 26px 24px;
  backdrop-filter: blur(6px);
}
.hero-stat .num {
  font-family: var(--font-en);
  font-size: 38px;
  font-weight: 700;
  color: #fff;
  line-height: 1;
  letter-spacing: -0.02em;
}
.hero-stat .num span {
  font-size: 20px;
  color: var(--blue-500);
  margin-left: 2px;
}
.hero-stat .lbl {
  margin-top: 12px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.55);
  line-height: 1.5;
}

.scroll-hint {
  position: absolute;
  bottom: 34px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  font-family: var(--font-en);
  font-size: 10px;
  letter-spacing: 0.2em;
  color: rgba(255, 255, 255, 0.4);
  text-transform: uppercase;
}
.scroll-hint i {
  width: 1px;
  height: 38px;
  background: linear-gradient(rgba(255, 255, 255, 0.5), transparent);
  animation: drop 2s infinite;
}
@keyframes drop {
  0% {
    transform: scaleY(0);
    transform-origin: top;
  }
  50% {
    transform: scaleY(1);
    transform-origin: top;
  }
  51% {
    transform: scaleY(1);
    transform-origin: bottom;
  }
  100% {
    transform: scaleY(0);
    transform-origin: bottom;
  }
}

/* ---------------- 信任条 ---------------- */
.trust-bar {
  background: var(--white);
  border-bottom: 1px solid var(--line-200);
  padding: 30px 0;
}
.trust-bar .wrap {
  display: flex;
  align-items: center;
  gap: 40px;
  flex-wrap: wrap;
}
.trust-bar .tag {
  font-family: var(--font-en);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-300);
  font-weight: 600;
  flex: none;
}
.trust-logos {
  display: flex;
  align-items: center;
  gap: 46px;
  flex: 1;
  flex-wrap: wrap;
}
.trust-logos span {
  font-size: 15px;
  font-weight: 700;
  color: var(--ink-300);
  letter-spacing: 0.03em;
  opacity: 0.75;
  transition: 0.25s;
}
.trust-logos span:hover {
  color: var(--ink-700);
  opacity: 1;
}

/* ---------------- Section 通用 ---------------- */
.section {
  padding: var(--sec-pad) 0;
}
.section.soft {
  background: var(--bg-soft);
}
.section.dark {
  background: var(--navy-900);
  color: rgba(255, 255, 255, 0.75);
}

/* ---------------- 产品矩阵 ---------------- */
.matrix-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line-200);
  border: 1px solid var(--line-200);
}
.m-card {
  background: var(--white);
  padding: 40px 34px 36px;
  position: relative;
  transition: 0.35s;
  overflow: hidden;
  cursor: pointer;
}
.m-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--blue-600), var(--teal-500));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s;
}
.m-card:hover {
  background: #fffaf5;
  box-shadow: 0 12px 40px rgba(16, 21, 28, 0.08);
  transform: translateY(-3px);
}
.m-card:hover::before {
  transform: scaleX(1);
}
.m-icon {
  width: 52px;
  height: 52px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--blue-100), #fff6ec);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 26px;
  border: 1px solid rgba(217, 93, 0, 0.14);
}
.m-no {
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--ink-300);
}
.m-card h3 {
  font-size: 21px;
  color: var(--ink-900);
  margin: 10px 0 6px;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.m-card .en {
  font-family: var(--font-en);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--ink-300);
  text-transform: uppercase;
}
.m-card p {
  margin-top: 16px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-500);
}
.m-list {
  margin-top: 20px;
  padding-top: 18px;
  border-top: 1px dashed var(--line-200);
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.m-list span {
  font-size: 12px;
  padding: 4px 11px;
  background: var(--bg-soft);
  color: var(--ink-500);
  border: 1px solid var(--line-100);
  border-radius: 100px;
}
.m-more {
  margin-top: 22px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--blue-600);
}
.m-card:hover .m-more .arw {
  transform: translateX(4px);
}
.m-more .arw {
  transition: transform 0.3s;
}

/* ---------------- 能力 / 特性 ---------------- */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.split.rev {
  grid-template-columns: 1fr 1fr;
}
.cap-list {
  margin-top: 40px;
}
.cap-item {
  display: flex;
  gap: 20px;
  padding: 24px 0;
  border-top: 1px solid var(--line-200);
}
.cap-item:last-child {
  border-bottom: 1px solid var(--line-200);
}
.cap-idx {
  font-family: var(--font-en);
  font-size: 12px;
  font-weight: 700;
  color: var(--blue-600);
  flex: none;
  padding-top: 4px;
  width: 28px;
}
.cap-item h4 {
  font-size: 17px;
  color: var(--ink-900);
  margin-bottom: 8px;
  font-weight: 700;
}
.cap-item p {
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-500);
}

/* 抽象图形 */
.abstract {
  position: relative;
  aspect-ratio: 1 / 1;
  max-width: 500px;
  margin: 0 auto;
  width: 100%;
}
.abs-box {
  position: absolute;
  border: 1px solid var(--line-200);
  background: #fff;
  border-radius: 8px;
  padding: 20px;
  box-shadow: 0 14px 40px rgba(16, 21, 28, 0.07);
}
.abs-box .t {
  font-family: var(--font-en);
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--ink-300);
  text-transform: uppercase;
}
.abs-box .v {
  font-size: 24px;
  font-weight: 700;
  color: var(--ink-900);
  margin-top: 6px;
  letter-spacing: -0.02em;
}
.abs-box .v small {
  font-size: 12px;
  color: var(--ink-300);
  font-weight: 500;
  letter-spacing: 0;
}
.abs-b1 {
  top: 4%;
  left: 2%;
  width: 56%;
}
.abs-b2 {
  top: 22%;
  right: 0;
  width: 52%;
  border-color: rgba(217, 93, 0, 0.22);
  background: linear-gradient(160deg, #fff, var(--blue-100));
}
.abs-b3 {
  bottom: 16%;
  left: 0;
  width: 62%;
}
.abs-ring {
  position: absolute;
  top: 8%;
  right: 6%;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  border: 1px dashed var(--line-200);
}
.abs-ring.r2 {
  top: auto;
  bottom: 2%;
  right: auto;
  left: 10%;
  width: 160px;
  height: 160px;
  border-color: rgba(224, 160, 26, 0.28);
}
.abs-bars {
  position: absolute;
  bottom: 2%;
  right: 4%;
  display: flex;
  align-items: flex-end;
  gap: 6px;
  height: 92px;
}
.abs-bars i {
  width: 9px;
  background: linear-gradient(180deg, var(--blue-500), rgba(217, 93, 0, 0.15));
  border-radius: 2px 2px 0 0;
  display: block;
}
.abs-pill {
  position: absolute;
  top: 46%;
  left: 40%;
  background: var(--navy-900);
  color: #fff;
  padding: 9px 18px;
  border-radius: 100px;
  font-size: 12px;
  font-weight: 600;
  box-shadow: 0 10px 30px rgba(36, 26, 20, 0.3);
  z-index: 3;
}
.abs-line {
  position: absolute;
  top: 34%;
  left: 46%;
  width: 120px;
  height: 1px;
  background: linear-gradient(90deg, var(--blue-500), transparent);
  transform: rotate(18deg);
}

/* ---------------- 行业方案 Tab ---------------- */
.tabs {
  display: flex;
  gap: 4px;
  border-bottom: 1px solid var(--line-200);
  margin-bottom: 52px;
  overflow-x: auto;
}
.tab-btn {
  padding: 16px 26px;
  font-size: 15px;
  font-weight: 600;
  color: var(--ink-500);
  background: none;
  border: 0;
  cursor: pointer;
  position: relative;
  font-family: var(--font-sans);
  white-space: nowrap;
  transition: color 0.25s;
}
.tab-btn::after {
  content: "";
  position: absolute;
  left: 50%;
  right: 50%;
  bottom: -1px;
  height: 2px;
  background: var(--blue-600);
  transition: 0.32s;
}
.tab-btn:hover {
  color: var(--ink-900);
}
.tab-btn.active {
  color: var(--blue-600);
}
.tab-btn.active::after {
  left: 0;
  right: 0;
}
.tab-panel {
  display: none;
  animation: fadeUp 0.5s ease;
}
.tab-panel.active {
  display: block;
}
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}
.tab-grid {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 64px;
  align-items: start;
}
.tab-panel h3 {
  font-size: 30px;
  color: var(--ink-900);
  line-height: 1.4;
  margin-bottom: 20px;
  font-weight: 700;
}
.tab-panel .lead {
  font-size: 16px;
  color: var(--ink-500);
  line-height: 1.9;
}
.feat-list {
  margin-top: 34px;
  display: grid;
  gap: 2px;
  background: var(--line-200);
  border: 1px solid var(--line-200);
}
.feat-row {
  background: #fff;
  padding: 22px 26px;
  display: flex;
  gap: 18px;
  align-items: flex-start;
  transition: background 0.25s;
}
.feat-row:hover {
  background: var(--blue-100);
}
.feat-row .ic {
  flex: none;
  margin-top: 2px;
  color: var(--blue-600);
}
.feat-row h5 {
  font-size: 16px;
  color: var(--ink-900);
  font-weight: 700;
  margin-bottom: 5px;
}
.feat-row p {
  font-size: 13.5px;
  color: var(--ink-500);
  line-height: 1.75;
}

/* 侧边数据卡 */
.side-card {
  background: var(--navy-800);
  padding: 44px 40px;
  position: relative;
  overflow: hidden;
  color: rgba(255, 255, 255, 0.72);
}
.side-card::after {
  content: "";
  position: absolute;
  right: -60px;
  top: -60px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(232, 116, 26, 0.35), transparent 70%);
}
.side-card h4 {
  font-size: 22px;
  color: #fff;
  margin-bottom: 14px;
  font-weight: 700;
  position: relative;
}
.side-card > p {
  font-size: 14px;
  line-height: 1.85;
  position: relative;
  margin-bottom: 34px;
}
.side-metrics {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.14);
  position: relative;
}
.side-metric {
  background: rgba(255, 255, 255, 0.04);
  padding: 22px 20px;
}
.side-metric .n {
  font-family: var(--font-en);
  font-size: 30px;
  font-weight: 700;
  color: #fff;
  line-height: 1;
}
.side-metric .n span {
  font-size: 15px;
  color: var(--blue-500);
}
.side-metric .t {
  font-size: 12.5px;
  margin-top: 10px;
  color: rgba(255, 255, 255, 0.55);
  line-height: 1.5;
}

/* ---------------- 数字步进 ---------------- */
.kpi-band {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line-200);
  border: 1px solid var(--line-200);
}
.kpi {
  background: #fff;
  padding: 44px 32px;
}
.kpi .n {
  font-family: var(--font-en);
  font-size: 52px;
  font-weight: 700;
  color: var(--ink-900);
  line-height: 1;
  letter-spacing: -0.03em;
}
.kpi .n span {
  color: var(--blue-600);
}
.kpi .t {
  margin-top: 14px;
  font-size: 14px;
  color: var(--ink-700);
  font-weight: 600;
}
.kpi .d {
  margin-top: 6px;
  font-size: 12.5px;
  color: var(--ink-300);
  line-height: 1.6;
}

/* ---------------- 流程 ---------------- */
.flow {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  position: relative;
  margin-top: 20px;
}
.flow::before {
  content: "";
  position: absolute;
  top: 27px;
  left: 8%;
  right: 8%;
  height: 1px;
  background: repeating-linear-gradient(
    90deg,
    var(--line-200) 0 8px,
    transparent 8px 16px
  );
}
.flow-step {
  text-align: center;
  padding: 0 18px;
  position: relative;
}
.flow-dot {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: #fff;
  border: 1px solid var(--line-200);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 26px;
  font-family: var(--font-en);
  font-weight: 700;
  font-size: 15px;
  color: var(--blue-600);
  position: relative;
  z-index: 2;
  transition: 0.3s;
  box-shadow: 0 0 0 8px var(--bg-soft);
}
.flow-step:hover .flow-dot {
  background: var(--blue-600);
  color: #fff;
  border-color: var(--blue-600);
}
.flow-step h4 {
  font-size: 17px;
  color: var(--ink-900);
  margin-bottom: 10px;
  font-weight: 700;
}
.flow-step p {
  font-size: 13.5px;
  color: var(--ink-500);
  line-height: 1.8;
}
.flow-step .wk {
  display: inline-block;
  margin-top: 14px;
  font-size: 11.5px;
  font-family: var(--font-en);
  color: var(--blue-600);
  background: var(--blue-100);
  padding: 4px 12px;
  border-radius: 100px;
  letter-spacing: 0.04em;
}

/* ---------------- 案例 ---------------- */
.case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}
.case-card {
  background: #fff;
  border: 1px solid var(--line-200);
  overflow: hidden;
  transition: 0.35s;
  display: flex;
  flex-direction: column;
  cursor: pointer;
}
.case-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 20px 48px rgba(16, 21, 28, 0.1);
  border-color: transparent;
}
.case-cover {
  height: 178px;
  position: relative;
  overflow: hidden;
}
.case-cover::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(
      rgba(255, 255, 255, 0.09) 1px,
      transparent 1px
    ),
    linear-gradient(90deg, rgba(255, 255, 255, 0.09) 1px, transparent 1px);
  background-size: 34px 34px;
}
.case-cover .cn {
  position: absolute;
  left: 26px;
  bottom: 20px;
  z-index: 2;
  color: #fff;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.02em;
}
.case-cover .cat {
  position: absolute;
  top: 20px;
  left: 26px;
  z-index: 2;
  font-family: var(--font-en);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.8);
  border: 1px solid rgba(255, 255, 255, 0.4);
  padding: 4px 11px;
  border-radius: 100px;
}
.cv1 {
  background: linear-gradient(135deg, #33251c, #d95d00);
}
.cv2 {
  background: linear-gradient(135deg, #8a5a1a, #e0a01a);
}
.cv3 {
  background: linear-gradient(135deg, #45322a, #a07a58);
}
.cv4 {
  background: linear-gradient(135deg, #3a2a08, #e0a01a);
}
.cv5 {
  background: linear-gradient(135deg, #25164a, #8a5a2b);
}
.cv6 {
  background: linear-gradient(135deg, #241a14, #e8741a);
}
.case-body {
  padding: 26px 28px 30px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.case-body h4 {
  font-size: 17px;
  color: var(--ink-900);
  font-weight: 700;
  line-height: 1.55;
  margin-bottom: 12px;
}
.case-body p {
  font-size: 13.5px;
  color: var(--ink-500);
  line-height: 1.8;
  flex: 1;
}
.case-kpi {
  margin-top: 22px;
  padding-top: 20px;
  border-top: 1px dashed var(--line-200);
  display: flex;
  gap: 30px;
}
.case-kpi div .n {
  font-family: var(--font-en);
  font-size: 24px;
  font-weight: 700;
  color: var(--blue-600);
  line-height: 1;
}
.case-kpi div .t {
  font-size: 11.5px;
  color: var(--ink-300);
  margin-top: 6px;
}

/* ---------------- 客户证言 ---------------- */
.quote-slider {
  position: relative;
  max-width: 940px;
  margin: 0 auto;
  text-align: center;
}
.quote-slide {
  display: none;
}
.quote-slide.active {
  display: block;
  animation: fadeUp 0.55s ease;
}
.quote-mark {
  font-family: var(--font-serif);
  font-size: 76px;
  line-height: 0.6;
  color: rgba(232, 116, 26, 0.32);
}
.quote-slide blockquote {
  font-size: 24px;
  line-height: 1.7;
  color: var(--ink-900);
  font-weight: 500;
  margin: 22px 0 34px;
  letter-spacing: -0.01em;
}
.q-author {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
}
.q-avatar {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--blue-600), var(--teal-500));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 700;
}
.q-info {
  text-align: left;
}
.q-info .n {
  font-size: 14.5px;
  color: var(--ink-900);
  font-weight: 700;
}
.q-info .r {
  font-size: 12.5px;
  color: var(--ink-300);
}
.q-dots {
  margin-top: 42px;
  display: flex;
  justify-content: center;
  gap: 9px;
}
.q-dots button {
  width: 26px;
  height: 3px;
  border: 0;
  background: var(--line-200);
  cursor: pointer;
  padding: 0;
  transition: 0.3s;
}
.q-dots button.active {
  background: var(--blue-600);
}

/* ---------------- 为什么选我们 ---------------- */
.why-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.why-card {
  padding: 36px 32px;
  border: 1px solid rgba(255, 255, 255, 0.13);
  background: rgba(255, 255, 255, 0.03);
  transition: 0.32s;
  position: relative;
  overflow: hidden;
}
.why-card::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--blue-500), var(--teal-500));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s;
}
.why-card:hover {
  background: rgba(255, 255, 255, 0.06);
  transform: translateY(-4px);
}
.why-card:hover::after {
  transform: scaleX(1);
}
.why-card .ic {
  width: 46px;
  height: 46px;
  border-radius: 8px;
  background: rgba(232, 116, 26, 0.14);
  border: 1px solid rgba(232, 116, 26, 0.28);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
}
.why-card h4 {
  font-size: 18px;
  color: #fff;
  margin-bottom: 12px;
  font-weight: 700;
}
.why-card p {
  font-size: 13.5px;
  line-height: 1.85;
  color: rgba(255, 255, 255, 0.6);
}

/* ---------------- 合规 / 资质 ---------------- */
.cert-row {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 44px;
}
.cert {
  border: 1px solid var(--line-200);
  padding: 18px 24px;
  display: flex;
  align-items: center;
  gap: 14px;
  background: #fff;
  transition: 0.28s;
}
.cert:hover {
  border-color: var(--blue-600);
  box-shadow: 0 6px 20px rgba(217, 93, 0, 0.12);
}
.cert .ct {
  font-size: 14px;
  font-weight: 600;
  color: var(--ink-900);
}
.cert .cs {
  font-family: var(--font-en);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  color: var(--ink-300);
  text-transform: uppercase;
}

/* ---------------- CTA ---------------- */
.cta-band {
  background: linear-gradient(120deg, var(--navy-900), #4a2a12 70%, #6b3a12);
  padding: 92px 0;
  position: relative;
  overflow: hidden;
}
.cta-band::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(
      rgba(255, 255, 255, 0.04) 1px,
      transparent 1px
    ),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 72px 72px;
}
.cta-inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 50px;
  flex-wrap: wrap;
}
.cta-band h2 {
  font-size: 38px;
  color: #fff;
  line-height: 1.35;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.cta-band p {
  margin-top: 16px;
  color: rgba(255, 255, 255, 0.65);
  font-size: 15.5px;
  max-width: 620px;
  line-height: 1.8;
}

/* ---------------- 表单 ---------------- */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.field label {
  display: block;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--ink-700);
  margin-bottom: 8px;
  letter-spacing: 0.02em;
}
.field label i {
  color: #c0392b;
  font-style: normal;
  margin-left: 3px;
}
.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 13px 15px;
  border: 1px solid var(--line-200);
  background: #fff;
  font-size: 14px;
  font-family: var(--font-sans);
  color: var(--ink-900);
  transition: 0.25s;
  border-radius: var(--radius);
  outline: none;
}
.field textarea {
  resize: vertical;
  min-height: 128px;
}
.field input:focus,
.field select:focus,
.field textarea:focus {
  border-color: var(--blue-600);
  box-shadow: 0 0 0 3px rgba(217, 93, 0, 0.1);
}
.field.full {
  grid-column: 1 / -1;
}
.form-note {
  margin-top: 18px;
  font-size: 12.5px;
  color: var(--ink-300);
  line-height: 1.7;
}

/* ---------------- 页脚 ---------------- */
.footer {
  background: var(--navy-900);
  color: rgba(255, 255, 255, 0.55);
  padding: 72px 0 0;
  font-size: 13.5px;
}
.footer-top {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.3fr;
  gap: 50px;
  padding-bottom: 56px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}
.footer .logo-cn {
  color: #fff;
}
.footer-brand p {
  margin-top: 20px;
  line-height: 1.85;
  max-width: 320px;
  font-size: 13px;
}
.footer h5 {
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 22px;
  letter-spacing: 0.04em;
}
.footer-col li {
  margin-bottom: 12px;
}
.footer-col a {
  transition: color 0.25s;
}
.footer-col a:hover {
  color: var(--blue-500);
}
.footer-contact li {
  margin-bottom: 14px;
  display: flex;
  gap: 10px;
  line-height: 1.7;
}
.footer-contact .ic {
  flex: none;
  margin-top: 4px;
  color: var(--blue-500);
}
.footer-bottom {
  padding: 26px 0;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  font-size: 12.5px;
  color: rgba(255, 255, 255, 0.38);
}
.footer-bottom a:hover {
  color: var(--blue-500);
}
.icp {
  margin-top: 8px;
  font-family: var(--font-en);
  font-size: 11.5px;
}

/* ---------------- 页面头（内页） ---------------- */
.page-hero {
  background: var(--navy-900);
  padding: 158px 0 78px;
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
    ellipse 60% 90% at 82% 10%,
    rgba(217, 93, 0, 0.42),
    transparent 66%
  );
}
.page-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(
      rgba(255, 255, 255, 0.04) 1px,
      transparent 1px
    ),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 80px 80px;
}
.page-hero .wrap {
  position: relative;
  z-index: 2;
}
.crumb {
  font-family: var(--font-en);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: rgba(255, 255, 255, 0.42);
  margin-bottom: 22px;
  text-transform: uppercase;
}
.crumb a:hover {
  color: var(--blue-500);
}
.crumb span {
  margin: 0 8px;
  opacity: 0.5;
}
.page-hero h1 {
  font-size: 48px;
  color: #fff;
  font-weight: 700;
  line-height: 1.24;
  letter-spacing: -0.02em;
}
.page-hero .sub {
  margin-top: 22px;
  font-size: 16.5px;
  color: rgba(255, 255, 255, 0.66);
  line-height: 1.85;
  max-width: 700px;
}

/* ---------------- 产品详情页 ---------------- */
.prod-hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 70px;
  align-items: center;
}
.prod-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-en);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--blue-600);
  border: 1px solid rgba(217, 93, 0, 0.3);
  background: var(--blue-100);
  padding: 7px 15px;
  border-radius: 100px;
  margin-bottom: 24px;
}
.prod-copy h2 {
  font-size: 34px;
  color: var(--ink-900);
  line-height: 1.34;
  font-weight: 700;
  margin-bottom: 18px;
}
.prod-copy > p {
  font-size: 15.5px;
  color: var(--ink-500);
  line-height: 1.9;
}
.prod-points {
  margin-top: 32px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px 26px;
}
.prod-points li {
  display: flex;
  gap: 11px;
  font-size: 14px;
  color: var(--ink-700);
  line-height: 1.6;
}
.prod-points .tk {
  flex: none;
  color: var(--blue-600);
  margin-top: 4px;
}

/* 界面 mock */
.ui-mock {
  border: 1px solid var(--line-200);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 24px 60px rgba(16, 21, 28, 0.13);
  background: #fff;
}
.ui-bar {
  height: 40px;
  background: var(--navy-800);
  display: flex;
  align-items: center;
  padding: 0 16px;
  gap: 7px;
}
.ui-bar i {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.22);
}
.ui-bar .ttl {
  margin-left: 12px;
  font-size: 11.5px;
  color: rgba(255, 255, 255, 0.6);
  font-family: var(--font-en);
  letter-spacing: 0.04em;
}
.ui-body {
  padding: 20px;
  display: grid;
  gap: 14px;
}
.ui-kpis {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}
.ui-kpi {
  background: var(--bg-soft);
  border: 1px solid var(--line-100);
  padding: 13px 14px;
}
.ui-kpi .t {
  font-size: 10.5px;
  color: var(--ink-300);
}
.ui-kpi .v {
  font-size: 19px;
  font-weight: 700;
  color: var(--ink-900);
  margin-top: 4px;
  letter-spacing: -0.01em;
}
.ui-kpi .v.up {
  color: #c0392b;
}
.ui-kpi .v.dn {
  color: #e0a01a;
}
.ui-chart {
  height: 122px;
  display: flex;
  align-items: flex-end;
  gap: 7px;
  padding: 14px;
  background: var(--bg-soft);
  border: 1px solid var(--line-100);
}
.ui-chart i {
  flex: 1;
  background: linear-gradient(180deg, var(--blue-500), rgba(232, 116, 26, 0.22));
  border-radius: 3px 3px 0 0;
}
.ui-table {
  border: 1px solid var(--line-100);
  overflow: hidden;
}
.ui-tr {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 0.8fr;
  font-size: 11px;
}
.ui-tr > div {
  padding: 9px 12px;
  border-bottom: 1px solid var(--line-100);
  color: var(--ink-700);
}
.ui-tr.head > div {
  background: var(--bg-soft);
  color: var(--ink-300);
  font-weight: 600;
  letter-spacing: 0.04em;
}
.ui-tr:last-child > div {
  border-bottom: 0;
}
.pill-ok {
  display: inline-block;
  padding: 1px 9px;
  border-radius: 100px;
  background: rgba(224, 160, 26, 0.1);
  color: #a8740c;
  font-size: 10px;
  font-weight: 600;
}
.pill-warn {
  display: inline-block;
  padding: 1px 9px;
  border-radius: 100px;
  background: rgba(242, 169, 0, 0.14);
  color: #b8730a;
  font-size: 10px;
  font-weight: 600;
}

/* 能力条目（内页） */
.cap-block {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 56px;
  padding: 40px 0;
  border-top: 1px solid var(--line-200);
}
.cap-block:last-child {
  border-bottom: 1px solid var(--line-200);
}
.cap-block .lb {
  font-size: 19px;
  font-weight: 700;
  color: var(--ink-900);
  display: flex;
  align-items: flex-start;
  gap: 12px;
}
.cap-block .lb .n {
  font-family: var(--font-en);
  font-size: 12px;
  color: var(--blue-600);
  padding-top: 5px;
}
.cap-block .lb p {
  font-size: 13px;
  color: var(--ink-300);
  font-weight: 400;
  margin-top: 8px;
  line-height: 1.7;
}
.cap-block .ct ul {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px 34px;
}
.cap-block .ct li {
  font-size: 14px;
  color: var(--ink-700);
  display: flex;
  gap: 10px;
  line-height: 1.7;
}
.cap-block .ct .tk {
  color: var(--blue-600);
  flex: none;
  margin-top: 5px;
}

/* 架构图 */
.arch {
  background: var(--navy-900);
  padding: 60px 40px;
  position: relative;
  overflow: hidden;
}
.arch::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
    ellipse 50% 70% at 50% 0%,
    rgba(217, 93, 0, 0.25),
    transparent 70%
  );
}
.arch-layer {
  position: relative;
  z-index: 2;
  max-width: 900px;
  margin: 0 auto;
}
.arch-row {
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.04);
  padding: 20px 26px;
  margin-bottom: 14px;
}
.arch-row .lt {
  font-family: var(--font-en);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--blue-500);
  margin-bottom: 12px;
}
.arch-row .lc {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.arch-row .lc span {
  font-size: 12.5px;
  color: rgba(255, 255, 255, 0.78);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  padding: 6px 14px;
  border-radius: 100px;
}
.arch-arrow {
  text-align: center;
  color: rgba(255, 255, 255, 0.25);
  font-size: 16px;
  margin: -4px 0 10px;
  position: relative;
  z-index: 2;
}

/* ---------------- 关于页 ---------------- */
.value-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line-200);
  border: 1px solid var(--line-200);
}
.value-card {
  background: #fff;
  padding: 44px 40px;
  transition: background 0.3s;
}
.value-card:hover {
  background: var(--blue-100);
}
.value-card .vn {
  font-family: var(--font-en);
  font-size: 40px;
  font-weight: 700;
  color: rgba(217, 93, 0, 0.16);
  line-height: 1;
}
.value-card h3 {
  font-size: 21px;
  color: var(--ink-900);
  margin: 16px 0 12px;
  font-weight: 700;
}
.value-card p {
  font-size: 14px;
  line-height: 1.85;
  color: var(--ink-500);
}
.milestone {
  position: relative;
  padding-left: 34px;
}
.milestone::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: var(--line-200);
}
.ms-item {
  position: relative;
  padding-bottom: 38px;
}
.ms-item:last-child {
  padding-bottom: 0;
}
.ms-item::before {
  content: "";
  position: absolute;
  left: -33px;
  top: 7px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: #fff;
  border: 2px solid var(--blue-600);
}
.ms-item .y {
  font-family: var(--font-en);
  font-size: 13px;
  font-weight: 700;
  color: var(--blue-600);
  letter-spacing: 0.08em;
}
.ms-item h4 {
  font-size: 17px;
  color: var(--ink-900);
  margin: 8px 0 8px;
  font-weight: 700;
}
.ms-item p {
  font-size: 14px;
  color: var(--ink-500);
  line-height: 1.8;
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}
.team-card {
  border: 1px solid var(--line-200);
  background: #fff;
  padding: 28px 26px;
  transition: 0.3s;
}
.team-card:hover {
  border-color: var(--blue-600);
  box-shadow: 0 12px 32px rgba(217, 93, 0, 0.12);
}
.team-av {
  width: 54px;
  height: 54px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--navy-800), var(--brand-500));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 18px;
}
.team-card h4 {
  font-size: 16px;
  color: var(--ink-900);
  font-weight: 700;
}
.team-card .role {
  font-size: 12.5px;
  color: var(--blue-600);
  margin: 5px 0 12px;
  font-weight: 600;
}
.team-card p {
  font-size: 13px;
  color: var(--ink-500);
  line-height: 1.75;
}
.team-card .tags {
  margin-top: 14px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.team-card .tags span {
  font-size: 11px;
  padding: 3px 9px;
  background: var(--bg-soft);
  border: 1px solid var(--line-100);
  color: var(--ink-500);
  border-radius: 100px;
}

/* ---------------- 响应式 ---------------- */
@media (max-width: 1080px) {
  .hero h1 {
    font-size: 48px;
  }
  .sec-title {
    font-size: 32px;
  }
  .matrix-grid,
  .case-grid,
  .why-grid {
    grid-template-columns: 1fr 1fr;
  }
  .flow {
    grid-template-columns: 1fr 1fr;
    gap: 44px 0;
  }
  .flow::before {
    display: none;
  }
  .team-grid {
    grid-template-columns: 1fr 1fr;
  }
  .split,
  .tab-grid,
  .prod-hero-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .cap-block {
    grid-template-columns: 1fr;
    gap: 22px;
  }
  .footer-top {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }
  .hero-stats {
    grid-template-columns: 1fr 1fr;
  }
  .kpi-band {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 760px) {
  :root {
    --sec-pad: 68px;
  }
  .nav {
    display: none;
  }
  .burger {
    display: flex;
  }
  .header.open {
    background: rgba(255, 255, 255, 0.98);
  }
  .header.open .nav {
    display: flex;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 12px 32px 26px;
    box-shadow: 0 12px 30px rgba(16, 21, 28, 0.1);
  }
  .header.open .nav a {
    color: var(--ink-900);
    padding: 13px 0;
    width: 100%;
    border-bottom: 1px solid var(--line-100);
  }
  .header.open .nav .header-cta {
    color: #fff !important;
    background: var(--blue-600);
    border-bottom: 0;
    margin-top: 14px;
    text-align: center;
  }
  .header.open .logo-cn {
    color: var(--ink-900);
  }
  .header.open .logo-en {
    color: var(--ink-300);
  }
  .header.open .burger span {
    background: var(--ink-900);
  }
  .hero h1 {
    font-size: 34px;
  }
  .hero {
    min-height: auto;
    padding: 120px 0 70px;
  }
  .page-hero {
    padding: 130px 0 60px;
  }
  .page-hero h1 {
    font-size: 32px;
  }
  .sec-title {
    font-size: 26px;
  }
  .matrix-grid,
  .case-grid,
  .why-grid,
  .value-grid,
  .team-grid,
  .prod-points,
  .cap-block .ct ul,
  .form-grid,
  .footer-top,
  .kpi-band,
  .flow,
  .hero-stats {
    grid-template-columns: 1fr;
  }
  .cta-band h2 {
    font-size: 27px;
  }
  .wrap {
    padding: 0 22px;
  }
  .abstract {
    max-width: 340px;
  }
}

/* 动画 */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.75s cubic-bezier(0.16, 1, 0.3, 1),
    transform 0.75s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal.in {
  opacity: 1;
  transform: none;
}
@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}
/* ============================================================
   客户矩阵（cases.html）
   ============================================================ */
.lead {
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink-500);
}
.client-matrix {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line-200);
  border: 1px solid var(--line-200);
}
.cm-group {
  background: #fff;
  padding: 30px 32px 32px;
  transition: background 0.3s;
}
.cm-group:hover {
  background: var(--brand-50);
}
.cm-head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 18px;
  flex-wrap: wrap;
}
.cm-cat {
  font-family: var(--font-en);
  font-size: 9.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--brand-500);
  font-weight: 600;
  border-left: 2px solid var(--brand-500);
  padding-left: 8px;
  line-height: 1.2;
}
.cm-name {
  font-size: 15px;
  font-weight: 700;
  color: var(--ink-900);
  letter-spacing: 0.02em;
}
.cm-num {
  margin-left: auto;
  font-family: var(--font-en);
  font-size: 12px;
  color: var(--ink-300);
  letter-spacing: 0.04em;
}
.cm-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.cm-list span {
  font-size: 13px;
  color: var(--ink-700);
  background: var(--bg-soft);
  border: 1px solid var(--line-100);
  padding: 5px 13px;
  border-radius: 2px;
  white-space: nowrap;
  transition: 0.25s;
}
.cm-group:hover .cm-list span {
  background: #fff;
  border-color: var(--line-200);
}
.cm-list span:hover {
  color: var(--brand-600);
  border-color: var(--brand-400);
  background: var(--brand-100);
}
.cm-note {
  margin-top: 22px;
  font-size: 12.5px;
  color: var(--ink-300);
}
@media (max-width: 900px) {
  .client-matrix {
    grid-template-columns: 1fr;
  }
  .cm-group {
    padding: 24px 22px 26px;
  }
}