/* ==========================================================================
   初鸣数智 · 金属制造数智工厂解决方案 —— 主样式
   设计语言：深邃海军蓝 + 克制金色 + 工业线条
   ========================================================================== */

/* ---------- Design Tokens ---------- */
:root {
  --navy-900: #0a1f44;
  --navy-800: #0f2855;
  --navy-700: #1a3a6b;
  --gold-500: #d4a84b;
  --gold-400: #e5be6e;
  --gold-100: #f7eed6;
  --white: #ffffff;
  --gray-50: #f5f7fa;
  --gray-100: #e8ecf2;
  --gray-200: #d6dce6;
  --gray-600: #5a6577;
  --gray-800: #333333;
  --steel: #6b7a90;

  --radius: 4px;
  --radius-sm: 2px;
  --shadow-sm: 0 1px 2px rgba(10, 31, 68, 0.06);
  --shadow-md: 0 8px 24px rgba(10, 31, 68, 0.08);
  --shadow-lg: 0 20px 48px rgba(10, 31, 68, 0.14);
  --ease-mech: cubic-bezier(0.22, 1, 0.36, 1);

  --font-sans: "Inter", "Source Han Sans SC", "Noto Sans SC", "PingFang SC",
    "Microsoft YaHei", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: "JetBrains Mono", "SF Mono", Consolas, Menlo, monospace;

  --header-h: 64px;
  --container: 1200px;
}

/* ---------- Reset ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--gray-800);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

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

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

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

h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0;
  color: var(--navy-900);
  font-weight: 700;
  letter-spacing: -0.01em;
}

p {
  margin: 0;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

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

.section {
  padding: 104px 0;
  position: relative;
}

/* 相邻两个同底色 section 之间压缩过大的留白（如发展历程 → 1+4 业务矩阵） */
.section + .section {
  padding-top: 40px;
}

.section-alt {
  background: var(--gray-50);
}

.section-dark {
  background: var(--navy-900);
  color: rgba(255, 255, 255, 0.82);
}

.section-dark h2,
.section-dark h3 {
  color: #fff;
}

.text-gold {
  color: var(--gold-500);
}

/* ---------- Section header ---------- */
.section-head {
  max-width: 760px;
  margin: 0 auto 64px;
  text-align: center;
}

.section-head .section-eyebrow {
  display: inline-block;
}

.section-title {
  font-size: clamp(28px, 3.6vw, 42px);
  line-height: 1.2;
  margin-top: 14px;
}

.section-title.left {
  text-align: left;
}

.section-desc {
  margin-top: 18px;
  font-size: 16px;
  color: var(--gray-600);
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
}

.section-desc.left {
  margin-left: 0;
  margin-right: 0;
  text-align: left;
}

.section-desc-light {
  color: rgba(255, 255, 255, 0.7);
}

/* 核心产品能力标签（深色板块内 · 金色描边） */
.core-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin: 18px 0 20px;
  padding: 0;
  list-style: none;
}

.core-tags li {
  padding: 6px 16px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--gold-400);
  background: rgba(212, 168, 75, 0.08);
  border: 1px solid rgba(212, 168, 75, 0.45);
  border-radius: 4px;
  transition:
    color 0.3s var(--ease-mech),
    background 0.3s var(--ease-mech),
    border-color 0.3s var(--ease-mech),
    transform 0.3s var(--ease-mech);
}

.core-tags li:hover {
  color: #fff;
  background: rgba(212, 168, 75, 0.2);
  border-color: var(--gold-500);
  transform: translateY(-2px);
}

.section-eyebrow {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.18em;
  color: var(--gold-500);
  text-transform: uppercase;
  position: relative;
  padding-bottom: 10px;
}

.section-eyebrow::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  width: 32px;
  height: 1px;
  background: var(--gold-500);
  opacity: 0.6;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.02em;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.3s var(--ease-mech),
    background-color 0.3s var(--ease-mech), color 0.3s var(--ease-mech),
    border-color 0.3s var(--ease-mech), box-shadow 0.3s var(--ease-mech);
  position: relative;
  overflow: hidden;
  white-space: nowrap;
}

.btn-sm {
  padding: 9px 18px;
  font-size: 14px;
}

.btn-lg {
  padding: 16px 34px;
  font-size: 16px;
}

.btn-primary {
  background: var(--gold-500);
  color: var(--navy-900);
  border-color: var(--gold-500);
}

.btn-primary::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(255, 255, 255, 0.35) 50%,
    transparent 100%
  );
  transform: translateX(-100%);
  transition: transform 0.6s var(--ease-mech);
}

.btn-primary:hover {
  background: var(--gold-400);
  border-color: var(--gold-400);
  transform: translateY(-1px);
  box-shadow: 0 10px 24px rgba(212, 168, 75, 0.28);
}

.btn-primary:hover::before {
  transform: translateX(100%);
}

.btn-ghost {
  background: transparent;
  color: #fff;
  border-color: rgba(255, 255, 255, 0.5);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: #fff;
}

/* ==========================================================================
   1. HEADER / NAV
   ========================================================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-h);
  z-index: 100;
  background: transparent;
  transition: background-color 0.3s var(--ease-mech),
    box-shadow 0.3s var(--ease-mech), border-color 0.3s var(--ease-mech);
  border-bottom: 1px solid transparent;
}

.site-header.scrolled {
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom-color: rgba(212, 168, 75, 0.5);
  box-shadow: 0 1px 18px rgba(10, 31, 68, 0.08);
}

.nav-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  transition: color 0.3s var(--ease-mech);
}

.brand-logo {
  display: block;
  height: 32px;
  width: auto;
  transition: filter 0.3s var(--ease-mech);
  /* 顶部未滚动时，将彩色 logo 转为纯白，适配深色 Hero */
  filter: brightness(0) invert(1);
}

.site-header.scrolled .brand-logo {
  filter: none;
}

.brand-mark {
  flex-shrink: 0;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.brand-text strong {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.brand-text em {
  font-style: normal;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.22em;
  opacity: 0.7;
  margin-top: 2px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}

.nav-links a {
  display: inline-block;
  padding: 8px 12px;
  font-size: 14px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.88);
  position: relative;
  transition: color 0.25s var(--ease-mech);
}

.site-header.scrolled .nav-links a {
  color: var(--navy-800);
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 4px;
  height: 2px;
  background: var(--gold-500);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.3s var(--ease-mech);
}

.nav-links a:hover {
  color: var(--gold-500);
}

.nav-links a:hover::after {
  transform: scaleX(1);
}

.nav-cta {
  flex-shrink: 0;
}

.site-header:not(.scrolled) .nav-cta {
  background: var(--gold-500);
  color: var(--navy-900);
  border-color: var(--gold-500);
}

/* ---------- 语言切换（分段控件，双状态常驻可见） ---------- */
.lang-switch {
  display: inline-flex;
  align-items: stretch;
  flex-shrink: 0;
  height: 36px;
  padding: 3px;
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.45);
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(4px);
  font-family: var(--font-sans);
  font-size: 13px;
  letter-spacing: 0.3px;
  transition: border-color var(--dur-base) var(--ease-mech),
    background var(--dur-base) var(--ease-mech);
}
.lang-switch:hover {
  border-color: var(--gold-500);
}
.lang-option {
  appearance: none;
  -webkit-appearance: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 42px;
  padding: 0 12px;
  border: 0;
  background: transparent;
  color: #fff;
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  line-height: 1;
  cursor: pointer;
  border-radius: 2px;
  transition: background var(--dur-base) var(--ease-mech),
    color var(--dur-base) var(--ease-mech);
}
.lang-option:hover {
  color: var(--gold-400);
}
.lang-option.is-active {
  background: var(--gold-500);
  color: var(--navy-900);
  cursor: default;
}
.lang-option.is-active:hover {
  color: var(--navy-900);
}
.lang-option:focus-visible {
  outline: 2px solid var(--gold-400);
  outline-offset: 1px;
}
.lang-sep {
  width: 1px;
  margin: 5px 0;
  background: rgba(255, 255, 255, 0.3);
}
.lang-option.is-active + .lang-sep,
.lang-sep:has(+ .lang-option.is-active) {
  opacity: 0;
}

/* 滚动后：浅底深字 */
.site-header.scrolled .lang-switch {
  border-color: var(--navy-900);
  background: #fff;
}
.site-header.scrolled .lang-option {
  color: var(--navy-700);
}
.site-header.scrolled .lang-option:hover {
  color: var(--navy-900);
}
.site-header.scrolled .lang-option.is-active {
  background: var(--navy-900);
  color: #fff;
}
.site-header.scrolled .lang-option.is-active:hover {
  color: #fff;
}
.site-header.scrolled .lang-sep {
  background: var(--gray-100);
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  padding: 8px;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: currentColor;
  margin: 0 auto;
  transition: transform 0.3s var(--ease-mech), opacity 0.2s var(--ease-mech);
}

.site-header.nav-open .nav-toggle span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.site-header.nav-open .nav-toggle span:nth-child(2) {
  opacity: 0;
}
.site-header.nav-open .nav-toggle span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ==========================================================================
   2. HERO
   ========================================================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: var(--header-h);
  color: #fff;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(10, 31, 68, 0.78) 0%, rgba(10, 31, 68, 0.62) 45%, rgba(10, 31, 68, 0.92) 100%),
    radial-gradient(ellipse at 75% 30%, rgba(212, 168, 75, 0.18), transparent 55%);
}

.hero-content {
  position: relative;
  z-index: 2;
  padding-top: 56px;
  padding-bottom: 56px;
  max-width: 920px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 16px;
  border: 1px solid rgba(212, 168, 75, 0.5);
  background: rgba(212, 168, 75, 0.08);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: rgba(255, 255, 255, 0.9);
}

.hero-badge .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--gold-500);
  box-shadow: 0 0 0 4px rgba(212, 168, 75, 0.18);
  animation: pulse 2.4s var(--ease-mech) infinite;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 4px rgba(212, 168, 75, 0.18); }
  50% { box-shadow: 0 0 0 8px rgba(212, 168, 75, 0); }
}

.hero-title {
  margin-top: 28px;
  font-size: clamp(36px, 6vw, 68px);
  line-height: 1.12;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.02em;
}

/* Hero 行业胶囊标签 */
.hero-tags {
  margin-top: 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  max-width: 720px;
}

.hero-tags li {
  display: inline-flex;
  align-items: center;
  padding: 7px 16px;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: rgba(255, 255, 255, 0.92);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(212, 168, 75, 0.45);
  border-radius: 999px;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  transition: background-color 0.3s var(--ease-mech),
    border-color 0.3s var(--ease-mech), color 0.3s var(--ease-mech),
    transform 0.3s var(--ease-mech);
}

.hero-tags li::before {
  content: "";
  width: 5px;
  height: 5px;
  margin-right: 8px;
  border-radius: 50%;
  background: var(--gold-500);
  flex-shrink: 0;
}

.hero-tags li:hover {
  background: rgba(212, 168, 75, 0.18);
  border-color: var(--gold-500);
  color: #fff;
  transform: translateY(-2px);
}

.hero-sub {
  margin-top: 24px;
  font-size: clamp(16px, 1.6vw, 19px);
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.82);
  max-width: 680px;
}

.hero-ctas {
  margin-top: 40px;
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

/* Hero bottom stats */
.hero-stats {
  position: relative;
  z-index: 2;
  margin-top: auto;
  padding: 28px 0;
  background: linear-gradient(180deg, transparent, rgba(10, 31, 68, 0.55));
  border-top: 1px solid rgba(212, 168, 75, 0.25);
}

.hero-stats-inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  align-items: center;
  gap: 24px;
}

.hero-stat {
  text-align: center;
}

.hero-stat-num {
  font-family: var(--font-mono);
  font-size: clamp(36px, 4.6vw, 56px);
  font-weight: 700;
  color: var(--gold-500);
  line-height: 1;
  letter-spacing: -0.02em;
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 4px;
}

.hero-stat-num .unit {
  font-family: var(--font-sans);
  font-size: 0.45em;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.7);
}

/* 数字前缀（「近」「约」等）——小号字，约数字字号的 45% */
.hero-stat-num .counter-prefix {
  font-family: var(--font-sans);
  font-size: 0.45em;
  font-weight: 600;
  color: rgba(212, 168, 75, 0.85);
  margin-right: 2px;
  letter-spacing: 0;
}

/* 非数字的排名文案（「第一」）——比数字小、比单位大，与金色同色系 */
.hero-stat-num .text-rank {
  font-family: var(--font-sans);
  font-size: 0.62em;
  font-weight: 700;
  color: var(--gold-500);
  letter-spacing: 0.04em;
}

.hero-stat-label {
  margin-top: 10px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  letter-spacing: 0.06em;
}

.hero-stat-divider {
  width: 1px;
  height: 56px;
  background: linear-gradient(
    180deg,
    transparent,
    rgba(212, 168, 75, 0.4),
    transparent
  );
}

.scroll-hint {
  position: absolute;
  bottom: 150px;
  left: 50%;
  transform: translateX(-50%);
  width: 26px;
  height: 42px;
  border: 1.5px solid rgba(255, 255, 255, 0.4);
  border-radius: 14px;
  z-index: 2;
  display: none;
}

.scroll-hint span {
  position: absolute;
  top: 8px;
  left: 50%;
  width: 3px;
  height: 8px;
  margin-left: -1.5px;
  background: var(--gold-500);
  border-radius: 2px;
  animation: scroll-dot 1.8s var(--ease-mech) infinite;
}

@keyframes scroll-dot {
  0% { transform: translateY(0); opacity: 1; }
  70% { transform: translateY(14px); opacity: 0; }
  100% { transform: translateY(0); opacity: 0; }
}

/* ==========================================================================
   3. ABOUT — 编辑式叙事布局
   ========================================================================== */

/* 大导语：标题下方的独立金句 */
.about-lead {
  max-width: 920px;
  margin: 0 auto 56px;
  font-size: clamp(20px, 2vw, 24px);
  line-height: 1.7;
  font-weight: 500;
  color: var(--navy-900);
  text-align: center;
  letter-spacing: -0.005em;
}

.about-lead .text-gold {
  font-weight: 600;
}

/* 主体：左正文 + 右身份卡 */
.about-body {
  display: grid;
  grid-template-columns: 1.45fr 1fr;
  gap: 64px;
  align-items: start;
  margin-bottom: 72px;
}

.about-prose p {
  margin: 0 0 18px;
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--gray-800);
}

.about-prose p strong {
  color: var(--navy-900);
  font-weight: 600;
}

.about-prose > p:last-of-type {
  margin-bottom: 0;
}

/* 1+4 业务矩阵：横向编号清单 */
.about-biz-list {
  list-style: none;
  margin: 20px 0 24px;
  padding: 0;
  border-top: 1px solid var(--gray-100);
}

.about-biz-list li {
  display: grid;
  grid-template-columns: 128px 1fr;
  gap: 20px;
  padding: 18px 0;
  border-bottom: 1px solid var(--gray-100);
  align-items: baseline;
  transition: background 0.3s var(--ease-mech);
}

.about-biz-list li:hover {
  background: linear-gradient(90deg, rgba(212, 168, 75, 0.04), transparent 70%);
}

.about-biz-list strong {
  position: relative;
  padding-left: 18px;
  font-size: 15.5px;
  font-weight: 700;
  color: var(--navy-900);
  letter-spacing: 0.01em;
}

.about-biz-list strong::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 10px;
  height: 1px;
  background: var(--gold-500);
}

.about-biz-list strong::after {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  width: 1px;
  height: 7px;
  background: var(--gold-500);
}

.about-biz-list span {
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--gray-600);
}

/* 右侧视觉卡：顶部总部大楼图 + 下方深蓝数据区 */
.about-id {
  position: sticky;
  top: 96px;
  background: #fff;
  border: 1px solid var(--gray-100);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 30px 60px -36px rgba(10, 31, 68, 0.35);
}

.about-id-visual {
  position: relative;
  margin: 0;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--navy-900);
}

.about-id-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
  transition: transform 0.8s var(--ease-mech);
}

.about-id:hover .about-id-visual img {
  transform: scale(1.04);
}

/* 图片底部深蓝渐隐，自然过渡到下方数据区 */
.about-id-visual-mask {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(10, 31, 68, 0) 40%,
    rgba(10, 31, 68, 0.35) 70%,
    rgba(10, 31, 68, 0.85) 100%
  );
  pointer-events: none;
}

.about-id-badge {
  position: absolute;
  top: 16px;
  left: 16px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 13px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--gold-400);
  border: 1px solid rgba(212, 168, 75, 0.45);
  border-radius: var(--radius);
  background: rgba(10, 31, 68, 0.72);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 2;
}

.about-id-badge .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--gold-500);
  box-shadow: 0 0 0 3px rgba(212, 168, 75, 0.2);
}

.about-id-body {
  position: relative;
  padding: 28px 28px 26px;
  background: linear-gradient(165deg, var(--navy-900) 0%, var(--navy-800) 100%);
  color: #fff;
  overflow: hidden;
}

.about-id-body::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle at top right, rgba(212, 168, 75, 0.15), transparent 65%);
  pointer-events: none;
}

.about-id-body::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(212, 168, 75, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(212, 168, 75, 0.035) 1px, transparent 1px);
  background-size: 28px 28px;
  pointer-events: none;
}

.about-id-body > * {
  position: relative;
  z-index: 1;
}

.about-id-head {
  padding-bottom: 20px;
  margin-bottom: 22px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.about-id-head strong {
  display: block;
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  line-height: 1.45;
  margin-bottom: 6px;
  letter-spacing: -0.005em;
}

.about-id-head span {
  font-size: 13px;
  color: var(--gold-400);
  letter-spacing: 0.02em;
}

.about-id-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px 16px;
  margin: 0 0 22px;
}

.about-id-grid div {
  margin: 0;
}

.about-id-grid dt {
  font-family: var(--font-mono);
  font-size: 30px;
  font-weight: 700;
  color: var(--gold-500);
  line-height: 1;
  letter-spacing: -0.02em;
  display: flex;
  align-items: baseline;
  gap: 2px;
}

.about-id-grid dt span {
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.75);
}

.about-id-grid dd {
  margin: 6px 0 0;
  font-size: 12.5px;
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.5;
}

/* 四大差异化能力 */
.about-edges {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 72px;
}

.about-edge {
  position: relative;
  padding: 28px 24px 26px;
  background: #fff;
  border: 1px solid var(--gray-100);
  border-radius: var(--radius);
  transition:
    transform 0.4s var(--ease-mech),
    border-color 0.4s var(--ease-mech),
    box-shadow 0.4s var(--ease-mech);
  overflow: hidden;
}

.about-edge::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gold-500);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.45s var(--ease-mech);
}

.about-edge:hover {
  transform: translateY(-4px);
  border-color: rgba(10, 31, 68, 0.15);
  box-shadow: 0 22px 40px -26px rgba(10, 31, 68, 0.35);
}

.about-edge:hover::before {
  transform: scaleX(1);
}

.about-edge-num {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--gold-500);
  margin-bottom: 18px;
}

.about-edge h3 {
  margin: 0 0 10px;
  font-size: 17px;
  font-weight: 700;
  color: var(--navy-900);
  letter-spacing: -0.005em;
}

.about-edge p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--gray-600);
}

/* 使命带：底部细金线点缀的全宽带 */
.mission-strip {
  position: relative;
  padding: 40px 32px;
  text-align: center;
  background: var(--gray-50);
  border: 1px solid var(--gray-100);
  border-radius: var(--radius);
}

.mission-strip::before,
.mission-strip::after {
  content: "";
  position: absolute;
  top: 50%;
  width: 48px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold-500));
}

.mission-strip::before {
  left: 24px;
}

.mission-strip::after {
  right: 24px;
  background: linear-gradient(90deg, var(--gold-500), transparent);
}

.mission-strip-label {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.22em;
  color: var(--steel);
  text-transform: uppercase;
  margin-bottom: 12px;
}

.mission-strip-text {
  margin: 0;
  font-size: clamp(22px, 2.4vw, 28px);
  font-weight: 700;
  color: var(--navy-900);
  letter-spacing: 0.02em;
  line-height: 1.5;
}

.mission-strip-text .text-gold {
  font-weight: 700;
  letter-spacing: 0.08em;
}

/* ==========================================================================
   4. TIMELINE
   ========================================================================== */
.timeline {
  position: relative;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
  padding: 32px 0 8px;
}

.timeline::before {
  content: "";
  position: absolute;
  top: 56px;
  left: 8%;
  right: 8%;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    var(--gold-500) 10%,
    var(--gold-500) 90%,
    transparent
  );
  opacity: 0.5;
}

.timeline-item {
  position: relative;
  padding: 0 14px;
  text-align: center;
}

.timeline-dot {
  position: relative;
  width: 14px;
  height: 14px;
  margin: 0 auto 20px;
  border-radius: 50%;
  background: #fff;
  border: 2px solid var(--navy-700);
  z-index: 2;
}

.timeline-dot.gold {
  border-color: var(--gold-500);
  background: var(--gold-500);
  box-shadow: 0 0 0 4px rgba(212, 168, 75, 0.18);
}

.timeline-year {
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  color: var(--navy-900);
  letter-spacing: -0.01em;
}

.timeline-text h3 {
  margin-top: 8px;
  font-size: 16px;
  font-weight: 600;
}

.timeline-text p {
  margin-top: 6px;
  font-size: 13.5px;
  color: var(--gray-600);
  line-height: 1.65;
}

/* ==========================================================================
   5. MARKET / KPI / CLIENTS
   ========================================================================== */
.kpi-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.kpi-card {
  padding: 44px 32px;
  text-align: center;
  background: #fff;
  border: 1px solid var(--gray-100);
  border-radius: var(--radius);
  transition: transform 0.35s var(--ease-mech),
    border-color 0.35s var(--ease-mech), box-shadow 0.35s var(--ease-mech);
}

.kpi-card:hover {
  transform: translateY(-4px);
  border-color: rgba(212, 168, 75, 0.5);
  box-shadow: var(--shadow-md);
}

.kpi-num {
  font-family: var(--font-mono);
  font-size: clamp(52px, 7vw, 80px);
  font-weight: 700;
  color: var(--gold-500);
  line-height: 1;
  letter-spacing: -0.03em;
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 6px;
}

.kpi-suffix {
  font-family: var(--font-sans);
  font-size: 0.35em;
  font-weight: 600;
  color: var(--navy-900);
}

/* 数字前缀（「近」「约」等）——小号字，约数字字号的 40% */
.kpi-num .counter-prefix {
  font-family: var(--font-sans);
  font-size: 0.4em;
  font-weight: 600;
  color: var(--gold-500);
  opacity: 0.85;
  margin-right: 2px;
  letter-spacing: 0;
}

/* 非数字的排名文案（「第一」） */
.kpi-num .text-rank {
  font-family: var(--font-sans);
  font-size: 0.58em;
  font-weight: 700;
  color: var(--gold-500);
  letter-spacing: 0.04em;
}

.kpi-label {
  margin-top: 16px;
  font-size: 15px;
  color: var(--gray-600);
  letter-spacing: 0.04em;
}

.clients {
  margin-top: 72px;
}

.clients-title {
  text-align: center;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--steel);
  text-transform: uppercase;
  margin-bottom: 28px;
}

.clients-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 12px;
}

.client-item {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 22px 12px;
  background: #fff;
  border: 1px solid var(--gray-100);
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
  color: var(--navy-800);
  transition: transform 0.3s var(--ease-mech),
    border-color 0.3s var(--ease-mech), color 0.3s var(--ease-mech);
}

.client-item:hover {
  transform: translateY(-3px);
  border-color: var(--gold-500);
  color: var(--gold-500);
}

.client-bullet {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--navy-700);
  flex-shrink: 0;
}

.client-bullet.gold {
  background: var(--gold-500);
}

/* ==========================================================================
   6. 1+4 BUSINESS MATRIX
   ========================================================================== */
.matrix-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.matrix-card {
  position: relative;
  padding: 36px;
  background: #fff;
  border: 1px solid var(--gray-100);
  border-radius: var(--radius);
  transition:
    transform 0.4s var(--ease-mech),
    border-color 0.4s var(--ease-mech),
    box-shadow 0.4s var(--ease-mech);
}

.matrix-card:hover {
  transform: translateY(-4px);
  border-color: var(--gold-500);
  box-shadow: var(--shadow-md);
}

/* 卡片 1：核心底座 · 实景照片 + 深色遮罩 */
.matrix-card-core {
  overflow: hidden;
  border: 1px solid var(--gold-500);
  color: #fff;
  background: var(--navy-900);
  box-shadow:
    0 0 0 1px rgba(212, 168, 75, 0.35),
    0 18px 40px -20px rgba(10, 31, 68, 0.6);
}

.matrix-card-core:hover {
  border-color: var(--gold-500);
  box-shadow:
    0 0 0 1px rgba(212, 168, 75, 0.55),
    0 26px 56px -20px rgba(10, 31, 68, 0.7);
}

.matrix-card-media {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}

.matrix-card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.02);
  transition: transform 1.2s var(--ease-mech);
}

.matrix-card-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(10, 31, 68, 0.94) 0%, rgba(10, 31, 68, 0.9) 55%, rgba(10, 31, 68, 0.96) 100%);
}

.matrix-card-core:hover .matrix-card-media img {
  transform: scale(1.08);
}

.matrix-card-core > *:not(.matrix-card-media) {
  position: relative;
  z-index: 1;
}

.matrix-card-core h3 {
  color: #fff;
}

.matrix-card-core p {
  color: #ffffff !important;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.35);
}

.matrix-card-core .matrix-tags li,
.matrix-card-core:hover .matrix-tags li {
  background: rgba(255, 255, 255, 0.18) !important;
  color: #ffffff !important;
  border: 1px solid rgba(212, 168, 75, 0.65) !important;
}

.matrix-card-flag {
  position: absolute;
  top: 0;
  right: 24px;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--navy-900);
  background: var(--gold-500);
  border-radius: 0 0 var(--radius) var(--radius);
}

.matrix-card-flag-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--navy-900);
  box-shadow: 0 0 0 3px rgba(10, 31, 68, 0.15);
}

/* 卡片 5：通栏 · 深色 */
.matrix-card-wide {
  grid-column: span 2;
}

.matrix-card-dark {
  padding: 44px 48px;
  color: #fff;
  background:
    radial-gradient(120% 140% at 0% 0%, rgba(212, 168, 75, 0.1) 0%, transparent 55%),
    linear-gradient(135deg, var(--navy-900) 0%, var(--navy-800) 100%);
  border: 1px solid rgba(212, 168, 75, 0.35);
  overflow: hidden;
}

.matrix-card-dark::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background-image:
    linear-gradient(rgba(212, 168, 75, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(212, 168, 75, 0.06) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
  mask-image: linear-gradient(135deg, #000 0%, transparent 70%);
  -webkit-mask-image: linear-gradient(135deg, #000 0%, transparent 70%);
}

.matrix-card-network {
  position: absolute;
  right: -20px;
  top: 50%;
  width: 520px;
  height: auto;
  transform: translateY(-50%);
  z-index: 0;
  pointer-events: none;
  opacity: 0.9;
}

.matrix-card-dark > *:not(.matrix-card-network) {
  position: relative;
  z-index: 1;
}

.matrix-card-dark:hover {
  transform: translateY(-4px);
  border-color: var(--gold-500);
  box-shadow: 0 20px 48px -20px rgba(10, 31, 68, 0.55);
}

.matrix-card-dark p {
  color: rgba(255, 255, 255, 0.9);
}

.matrix-card-sub {
  display: block;
  margin-top: 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--gold-400);
  text-transform: uppercase;
}

/* 头部 */
.matrix-card-head {
  display: flex;
  align-items: center;
  gap: 14px;
}

.matrix-icon {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 72px;
  height: 72px;
  color: var(--navy-800);
  background:
    radial-gradient(circle at 30% 30%, #ffffff 0%, var(--gray-50) 70%);
  border: 1px solid var(--gray-100);
  border-radius: 50%;
  transition:
    color 0.4s var(--ease-mech),
    background 0.4s var(--ease-mech),
    border-color 0.4s var(--ease-mech),
    transform 0.4s var(--ease-mech),
    box-shadow 0.4s var(--ease-mech);
}

.matrix-card:hover .matrix-icon {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px -16px rgba(10, 31, 68, 0.35);
}

/* 卡片 2：SaaS · 浅蓝径向渐变 */
.matrix-icon-blue {
  color: #1A3A6B;
  background:
    radial-gradient(circle at 30% 25%, #ffffff 0%, #E8F0FB 55%, #D6E4F7 100%);
  border-color: rgba(26, 58, 107, 0.12);
}

/* 卡片 3：规划 · 浅金径向渐变 */
.matrix-icon-amber {
  color: #8A6A1F;
  background:
    radial-gradient(circle at 30% 25%, #ffffff 0%, #FBF3DF 55%, #F3E4B8 100%);
  border-color: rgba(212, 168, 75, 0.28);
}

/* 卡片 4：咨询 · 浅蓝灰径向渐变 */
.matrix-icon-slate {
  color: #3F4D63;
  background:
    radial-gradient(circle at 30% 25%, #ffffff 0%, #EDF1F6 55%, #D9E0EA 100%);
  border-color: rgba(107, 122, 144, 0.22);
}

.matrix-icon-gold {
  color: var(--gold-500);
  background:
    radial-gradient(circle at 30% 25%, rgba(212, 168, 75, 0.22) 0%, rgba(212, 168, 75, 0.08) 70%);
  border-color: rgba(212, 168, 75, 0.35);
}

.matrix-card-core .matrix-icon {
  width: 64px;
  height: 64px;
  color: var(--gold-500);
  background:
    radial-gradient(circle at 30% 25%, rgba(212, 168, 75, 0.28) 0%, rgba(212, 168, 75, 0.1) 70%);
  border-color: rgba(212, 168, 75, 0.45);
  box-shadow: 0 8px 24px -12px rgba(0, 0, 0, 0.5);
}

.matrix-card-dark .matrix-icon {
  width: 76px;
  height: 76px;
  color: var(--gold-500);
  background:
    radial-gradient(circle at 30% 25%, rgba(212, 168, 75, 0.28) 0%, rgba(212, 168, 75, 0.08) 70%);
  border-color: rgba(212, 168, 75, 0.45);
  box-shadow: 0 12px 32px -16px rgba(0, 0, 0, 0.6);
}

.matrix-card h3 {
  font-size: 21px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.matrix-card-dark h3 {
  color: #fff;
  font-size: 24px;
}

.matrix-card p {
  margin-top: 18px;
  color: var(--gray-600);
  font-size: 15px;
  line-height: 1.8;
}

/* 标签：浅灰圆角 4px */
.matrix-tags {
  margin-top: 22px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
}

.matrix-tags li {
  padding: 5px 12px;
  font-size: 12.5px;
  color: var(--gray-800);
  background: #f5f5f5;
  border: 1px solid transparent;
  border-radius: 4px;
  transition: background 0.3s var(--ease-mech), color 0.3s var(--ease-mech);
}

/* 深色卡片上的标签 */
.matrix-tags-light li {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.4);
}

.matrix-card:not(.matrix-card-core):not(.matrix-card-dark):hover .matrix-tags li {
  background: rgba(212, 168, 75, 0.14);
  color: var(--navy-800);
}

.matrix-card-dark:hover .matrix-tags-light li {
  background: rgba(255, 255, 255, 0.16);
  border-color: rgba(212, 168, 75, 0.6);
  color: #fff;
}

/* ==========================================================================
   7. MES (DARK)
   ========================================================================== */
.flow {
  display: grid;
  grid-template-columns: 1fr 24px 1fr 24px 1fr 24px 1fr 24px 1fr;
  align-items: center;
  gap: 8px;
  padding: 36px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(212, 168, 75, 0.2);
  border-radius: var(--radius);
  margin-bottom: 56px;
}

.flow-node {
  text-align: center;
  padding: 16px 8px;
}

.flow-node-num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--gold-500);
  opacity: 0.85;
}

.flow-node-title {
  margin-top: 8px;
  font-size: 17px;
  font-weight: 600;
  color: #fff;
}

.flow-node-desc {
  margin-top: 6px;
  font-size: 12.5px;
  color: rgba(255, 255, 255, 0.55);
  line-height: 1.5;
}

.flow-line {
  width: 100%;
  height: 20px;
}

.flow-anim-line {
  stroke-dasharray: 4 3;
  animation: dash 1.6s linear infinite;
}

@keyframes dash {
  to {
    stroke-dashoffset: -14;
  }
}

/* ---------- 痛点 → 价值：Before / After 对照表 ---------- */
.pa-block {
  margin: 80px 0 56px;
}

.pa-block-head {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 40px;
}

.pa-block-head h3 {
  font-size: clamp(22px, 2.4vw, 30px);
  font-weight: 600;
  color: #fff;
  letter-spacing: -0.01em;
}

.pa-block-head p {
  margin-top: 14px;
  font-size: 15px;
  color: rgba(255, 255, 255, 0.66);
  line-height: 1.8;
}

.pa-table {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.pa-row {
  display: grid;
  grid-template-columns: 1fr 56px 1fr;
  align-items: stretch;
  gap: 0;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.025);
  overflow: hidden;
  transition:
    transform 0.4s var(--ease-mech),
    border-color 0.4s var(--ease-mech),
    background 0.4s var(--ease-mech),
    box-shadow 0.4s var(--ease-mech);
}

.pa-row:hover {
  transform: translateY(-2px);
  border-color: rgba(212, 168, 75, 0.35);
  background: rgba(255, 255, 255, 0.045);
  box-shadow: 0 14px 32px -20px rgba(0, 0, 0, 0.7);
}

.pa-cell {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 22px 24px;
}

.pa-cell-before {
  background:
    linear-gradient(180deg, rgba(180, 80, 60, 0.06), rgba(180, 80, 60, 0)),
    rgba(255, 255, 255, 0.02);
  border-right: 1px dashed rgba(255, 255, 255, 0.08);
}

.pa-cell-after {
  background:
    linear-gradient(180deg, rgba(212, 168, 75, 0.08), rgba(212, 168, 75, 0)),
    rgba(212, 168, 75, 0.025);
}

.pa-icon {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  margin-top: 2px;
}

.pa-icon-x {
  color: #f08a6a;
  background: rgba(240, 138, 106, 0.12);
  border: 1px solid rgba(240, 138, 106, 0.32);
}

.pa-icon-check {
  color: var(--gold-500);
  background: rgba(212, 168, 75, 0.14);
  border: 1px solid rgba(212, 168, 75, 0.4);
}

.pa-cell-body {
  flex: 1;
  min-width: 0;
}

.pa-label {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.5);
  margin-bottom: 8px;
}

.pa-label-gold {
  color: var(--gold-400);
}

.pa-cell p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
}

.pa-cell-before p {
  color: rgba(255, 255, 255, 0.72);
}

.pa-cell-after p {
  color: rgba(255, 255, 255, 0.94);
}

.pa-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gold-500);
  background: linear-gradient(90deg,
    rgba(255, 255, 255, 0) 0%,
    rgba(212, 168, 75, 0.08) 50%,
    rgba(255, 255, 255, 0) 100%);
}

.pa-arrow svg {
  animation: paArrowBob 2.6s var(--ease-mech) infinite;
}

@keyframes paArrowBob {
  0%, 100% { transform: translateX(0); opacity: 0.55; }
  50% { transform: translateX(4px); opacity: 1; }
}

/* ---------- 产品亮点：图文交错展示 ---------- */
.show-block {
  margin: 96px 0 0;
}

.show-head {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 56px;
}

.show-head h3 {
  font-size: clamp(22px, 2.6vw, 32px);
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.01em;
  margin-top: 12px;
}

.show-head p {
  margin-top: 14px;
  font-size: 15px;
  color: rgba(255, 255, 255, 0.66);
  line-height: 1.8;
}

.show-list {
  display: flex;
  flex-direction: column;
  gap: 72px;
}

.show-row {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  align-items: center;
  gap: 56px;
}

.show-row-reverse {
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
}

.show-row-reverse .show-text {
  order: 2;
}

.show-row-reverse .show-shot {
  order: 1;
}

.show-num {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--gold-500);
  padding: 4px 10px;
  border: 1px solid rgba(212, 168, 75, 0.4);
  border-radius: var(--radius);
  background: rgba(212, 168, 75, 0.08);
}

.show-text h4 {
  margin: 18px 0 12px;
  font-size: clamp(22px, 2.2vw, 28px);
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.01em;
}

.show-lead {
  margin: 0 0 20px;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.86);
}

.show-bullets {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.show-bullets li {
  position: relative;
  padding-left: 26px;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.78);
}

.show-bullets li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background:
    radial-gradient(circle at 50% 50%, var(--gold-500) 0 3px, transparent 3.5px),
    rgba(212, 168, 75, 0.12);
  border: 1px solid rgba(212, 168, 75, 0.4);
}

.show-shot {
  margin: 0;
}

.show-shot-frame {
  position: relative;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius);
  background:
    linear-gradient(180deg, rgba(15, 40, 85, 0.6), rgba(10, 31, 68, 0.85));
  padding: 14px;
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.05) inset,
    0 24px 48px -24px rgba(0, 0, 0, 0.8);
  transition:
    transform 0.5s var(--ease-mech),
    border-color 0.5s var(--ease-mech),
    box-shadow 0.5s var(--ease-mech);
}

.show-shot-frame::before {
  /* 仿浏览器顶栏的三个圆点，增强"产品截图"感 */
  content: "";
  position: absolute;
  top: 10px;
  left: 14px;
  width: 36px;
  height: 10px;
  background:
    radial-gradient(circle at 5px 50%, rgba(255, 255, 255, 0.32) 0 3px, transparent 3.5px),
    radial-gradient(circle at 17px 50%, rgba(255, 255, 255, 0.22) 0 3px, transparent 3.5px),
    radial-gradient(circle at 29px 50%, rgba(255, 255, 255, 0.18) 0 3px, transparent 3.5px);
}

.show-row:hover .show-shot-frame {
  transform: translateY(-4px);
  border-color: rgba(212, 168, 75, 0.4);
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.08) inset,
    0 36px 64px -28px rgba(0, 0, 0, 0.9);
}

.show-shot-frame img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 10;
  object-fit: contain;
  object-position: center;
  border-radius: 2px;
  margin-top: 18px;
  background: #0a1f44;
}

.show-shot-frame img.img-missing {
  /* 占位态：显示虚线框 + 提示 */
  opacity: 0;
}

.show-shot-frame:has(img.img-missing)::after {
  content: "产品截图占位";
  position: absolute;
  left: 14px;
  right: 14px;
  top: 32px;
  bottom: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1.5px dashed rgba(255, 255, 255, 0.18);
  border-radius: 2px;
  color: rgba(255, 255, 255, 0.42);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  background:
    repeating-linear-gradient(
      45deg,
      rgba(255, 255, 255, 0.02) 0 10px,
      rgba(255, 255, 255, 0.04) 10px 20px
    );
  pointer-events: none;
}

.show-shot-frame figcaption {
  margin-top: 10px;
  text-align: center;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.55);
  letter-spacing: 0.02em;
}

/* ---------- 更多功能 ---------- */
.more-block {
  margin: 88px 0 0;
  padding-top: 56px;
  border-top: 1px solid rgba(212, 168, 75, 0.18);
}

.more-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 40px;
}

.more-head h3 {
  font-size: clamp(22px, 2.4vw, 30px);
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.01em;
  margin-top: 10px;
}

.more-head p {
  margin-top: 12px;
  font-size: 15px;
  color: rgba(255, 255, 255, 0.66);
  line-height: 1.8;
}

.more-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.more-card {
  position: relative;
  padding: 26px 22px 24px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  transition:
    transform 0.4s var(--ease-mech),
    border-color 0.4s var(--ease-mech),
    background 0.4s var(--ease-mech),
    box-shadow 0.4s var(--ease-mech);
  overflow: hidden;
}

.more-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg,
    transparent 0%,
    var(--gold-500) 50%,
    transparent 100%);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 0.5s var(--ease-mech);
}

.more-card:hover {
  transform: translateY(-4px);
  border-color: rgba(212, 168, 75, 0.4);
  background: rgba(255, 255, 255, 0.05);
  box-shadow: 0 18px 36px -24px rgba(0, 0, 0, 0.8);
}

.more-card:hover::before {
  transform: scaleX(1);
}

.more-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  color: var(--gold-500);
  background: rgba(212, 168, 75, 0.1);
  border: 1px solid rgba(212, 168, 75, 0.3);
  border-radius: var(--radius);
  margin-bottom: 16px;
}

.more-card h4 {
  font-size: 18px;
  font-weight: 600;
  color: #fff;
  margin: 0 0 10px;
  letter-spacing: -0.005em;
}

.more-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.72);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.feature-card {
  padding: 32px 28px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  transition: transform 0.4s var(--ease-mech),
    border-color 0.4s var(--ease-mech), background-color 0.4s var(--ease-mech);
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: rgba(212, 168, 75, 0.6);
  background: rgba(212, 168, 75, 0.06);
}

.feature-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
  color: var(--gold-500);
  background: rgba(212, 168, 75, 0.12);
  border: 1px solid rgba(212, 168, 75, 0.25);
}

.feature-card h3 {
  margin-top: 20px;
  font-size: 19px;
  font-weight: 600;
}

.feature-card p {
  margin-top: 12px;
  font-size: 14.5px;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.7;
}

/* ==========================================================================
   8. DIGITAL DESIGN
   ========================================================================== */
.design-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.design-visual {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background: var(--navy-900);
  box-shadow: var(--shadow-lg);
}

.design-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.85) brightness(0.85);
}

.design-visual-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    transparent 40%,
    rgba(10, 31, 68, 0.85) 100%
  );
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 28px;
  gap: 12px;
}

.design-tag {
  display: inline-flex;
  align-self: flex-start;
  align-items: center;
  gap: 10px;
  padding: 8px 14px;
  background: rgba(10, 31, 68, 0.6);
  border: 1px solid rgba(212, 168, 75, 0.4);
  border-radius: var(--radius-sm);
  backdrop-filter: blur(6px);
}

.design-tag-key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--gold-500);
  text-transform: uppercase;
}

.design-tag-val {
  font-size: 14px;
  font-weight: 600;
  color: #fff;
}

.design-list {
  margin-top: 28px;
}

.design-list li {
  display: flex;
  gap: 14px;
  padding: 16px 0;
  border-bottom: 1px solid var(--gray-100);
}

.design-list li:last-child {
  border-bottom: none;
}

.design-list .check {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(212, 168, 75, 0.12);
  color: var(--gold-500);
  margin-top: 2px;
}

.design-list strong {
  display: block;
  font-size: 16px;
  color: var(--navy-900);
  font-weight: 600;
}

.design-list p {
  margin-top: 4px;
  font-size: 14.5px;
  color: var(--gray-600);
}

/* ==========================================================================
   9. IOT & SUPPLY CHAIN
   ========================================================================== */
.iot-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.iot-card {
  padding: 36px;
  background: #fff;
  border: 1px solid var(--gray-100);
  border-radius: var(--radius);
  transition: transform 0.4s var(--ease-mech),
    border-color 0.4s var(--ease-mech), box-shadow 0.4s var(--ease-mech);
}

.iot-card:hover {
  transform: translateY(-4px);
  border-color: var(--gold-500);
  box-shadow: var(--shadow-md);
}

.iot-card-head {
  display: flex;
  align-items: center;
  gap: 14px;
}

.iot-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gold-500);
  background: rgba(212, 168, 75, 0.1);
  border-radius: var(--radius);
}

.iot-card h3 {
  font-size: 21px;
  font-weight: 600;
}

.iot-desc {
  margin-top: 16px;
  color: var(--gray-600);
  font-size: 15px;
}

.iot-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px dashed var(--gray-200);
}

.iot-metric {
  text-align: center;
}

.iot-metric-num {
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 700;
  color: var(--gold-500);
  letter-spacing: -0.02em;
}

.iot-metric-label {
  margin-top: 6px;
  font-size: 12.5px;
  color: var(--gray-600);
}

.iot-list {
  margin-top: 24px;
}

.iot-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 0;
  font-size: 14.5px;
  color: var(--gray-800);
  border-bottom: 1px dashed var(--gray-200);
}

.iot-list li:last-child {
  border-bottom: none;
}

/* ---------- 供应链平台 ---------- */
.scp-cap-label {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold-500);
  padding: 4px 10px;
  border: 1px solid rgba(212, 168, 75, 0.35);
  border-radius: var(--radius);
  background: rgba(212, 168, 75, 0.06);
  margin-bottom: 24px;
}

/* 平台总览 KPI */
.scp-kpis {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr;
  align-items: center;
  gap: 16px;
  margin: 8px 0 16px;
  padding: 28px 32px;
  background: #fff;
  border: 1px solid var(--gray-100);
  border-radius: var(--radius);
  box-shadow: 0 18px 40px -32px rgba(10, 31, 68, 0.25);
}

.scp-kpi {
  text-align: center;
}

.scp-kpi-num {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 2px;
  font-family: var(--font-mono);
  font-size: clamp(28px, 3.4vw, 40px);
  font-weight: 700;
  color: var(--navy-900);
  line-height: 1;
  letter-spacing: -0.02em;
}

.scp-kpi-num em {
  font-family: var(--font-sans);
  font-size: 14px;
  font-style: normal;
  font-weight: 600;
  color: var(--gold-500);
  margin-left: 2px;
}

.scp-kpi-num .counter-prefix {
  font-family: var(--font-sans);
  font-size: 0.4em;
  font-weight: 600;
  color: var(--gold-500);
  opacity: 0.85;
  margin-right: 2px;
  letter-spacing: 0;
}

.scp-kpi-num .counter-suffix-inline {
  font-family: var(--font-sans);
  font-size: 0.5em;
  font-weight: 700;
  color: var(--navy-900);
  margin-left: 1px;
}

.scp-kpi-label {
  margin-top: 10px;
  font-size: 13px;
  color: var(--gray-600);
  letter-spacing: 0.02em;
}

.scp-kpi-sep {
  width: 1px;
  height: 44px;
  background: linear-gradient(180deg, transparent, var(--gray-100), transparent);
}

/* 四大能力 · 图文交错行 */
.plat-row {
  display: grid;
  grid-template-columns: 1.12fr 1fr;
  gap: 56px;
  align-items: center;
  padding: 64px 0;
  border-bottom: 1px solid var(--gray-100);
}

.plat-row:first-of-type {
  padding-top: 48px;
}

.plat-row:last-of-type {
  border-bottom: none;
  padding-bottom: 24px;
}

.plat-row-reverse .plat-shot {
  order: 2;
}

.plat-row-reverse .plat-text {
  order: 1;
}

.plat-shot {
  margin: 0;
  position: relative;
}

/* 浏览器/应用窗口外壳 */
.plat-frame {
  position: relative;
  background: #fff;
  border: 1px solid var(--gray-100);
  border-radius: 8px;
  overflow: hidden;
  box-shadow:
    0 30px 60px -30px rgba(10, 31, 68, 0.35),
    0 8px 20px -12px rgba(10, 31, 68, 0.18);
  transform: translateZ(0);
  transition:
    transform 0.5s var(--ease-mech),
    box-shadow 0.5s var(--ease-mech);
}

.plat-frame::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 32px;
  background: linear-gradient(180deg, #f4f6fa, #eaedf3);
  border-bottom: 1px solid var(--gray-100);
  z-index: 2;
}

.plat-frame::after {
  content: "";
  position: absolute;
  top: 11px;
  left: 14px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #ff5f57;
  box-shadow:
    16px 0 0 #febc2e,
    32px 0 0 #28c840;
  z-index: 3;
}

.plat-frame img {
  display: block;
  width: 100%;
  height: auto;
  padding-top: 32px;
  background: #f5f7fa;
}

.plat-row:hover .plat-frame {
  transform: translateY(-4px);
  box-shadow:
    0 40px 80px -36px rgba(10, 31, 68, 0.45),
    0 12px 28px -16px rgba(10, 31, 68, 0.22);
}

.plat-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--gold-500);
  padding: 5px 12px;
  border: 1px solid rgba(212, 168, 75, 0.4);
  border-radius: var(--radius);
  background: rgba(212, 168, 75, 0.06);
  margin-bottom: 20px;
}

.plat-text h3 {
  font-size: clamp(24px, 2.4vw, 30px);
  font-weight: 700;
  color: var(--navy-900);
  margin: 0 0 14px;
  letter-spacing: -0.01em;
}

.plat-lead {
  font-size: 16px;
  line-height: 1.85;
  color: var(--gray-800);
  margin: 0 0 22px;
}

.plat-bullets {
  list-style: none;
  margin: 0 0 28px;
  padding: 0;
}

.plat-bullets.plat-bullets-last {
  margin-bottom: 0;
}

.plat-bullets li {
  position: relative;
  padding-left: 22px;
  margin-bottom: 10px;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--gray-800);
}

.plat-bullets li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 11px;
  width: 12px;
  height: 1px;
  background: var(--gold-500);
}

.plat-bullets li::after {
  content: "";
  position: absolute;
  left: 2px;
  top: 8px;
  width: 1px;
  height: 7px;
  background: var(--gold-500);
}

.plat-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  padding-top: 22px;
  border-top: 1px solid var(--gray-100);
}

.plat-stats > div {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.plat-stats strong {
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 700;
  color: var(--navy-900);
  line-height: 1;
  letter-spacing: -0.02em;
  display: inline-flex;
  align-items: baseline;
  gap: 2px;
}

.plat-stats strong em {
  font-family: var(--font-sans);
  font-size: 12px;
  font-style: normal;
  font-weight: 600;
  color: var(--gold-500);
}

.plat-stats span {
  font-size: 12.5px;
  color: var(--gray-600);
  letter-spacing: 0.02em;
}

/* 产业生态 + 内外贯通 */
.scp-eco {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 40px;
  align-items: center;
  margin-top: 56px;
  padding: 40px;
  background: linear-gradient(135deg, var(--navy-900), var(--navy-800));
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius);
  position: relative;
  overflow: hidden;
}

.scp-eco::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(212, 168, 75, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(212, 168, 75, 0.04) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
}

.scp-eco-left,
.scp-eco-right {
  position: relative;
  z-index: 1;
}

.scp-eco-left .scp-cap-label {
  margin-bottom: 16px;
}

.scp-eco-left h3 {
  font-size: clamp(22px, 2.4vw, 28px);
  font-weight: 700;
  color: #fff;
  margin: 0 0 14px;
  letter-spacing: -0.01em;
}

.scp-eco-left > p {
  font-size: 15px;
  line-height: 1.85;
  color: rgba(255, 255, 255, 0.72);
  margin: 0 0 24px;
}

.scp-actors {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.scp-actor {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 500;
  color: #fff;
  transition:
    border-color 0.3s var(--ease-mech),
    background 0.3s var(--ease-mech);
}

.scp-actor:hover {
  border-color: rgba(212, 168, 75, 0.4);
  background: rgba(212, 168, 75, 0.08);
}

.scp-actor-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gold-500);
  box-shadow: 0 0 0 4px rgba(212, 168, 75, 0.15);
  flex-shrink: 0;
}

.scp-loop {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.scp-loop-node {
  flex: 0 0 auto;
  width: 112px;
  padding: 16px 12px;
  text-align: center;
  border-radius: var(--radius);
  border: 1px solid rgba(212, 168, 75, 0.35);
  background: rgba(212, 168, 75, 0.08);
}

.scp-loop-node span {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold-400);
  margin-bottom: 6px;
}

.scp-loop-node strong {
  display: block;
  font-size: 15px;
  font-weight: 700;
  color: #fff;
}

.scp-loop-out {
  border-color: rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.04);
}

.scp-loop-out span {
  color: rgba(255, 255, 255, 0.55);
}

.scp-loop-link {
  flex: 1 1 auto;
  height: 60px;
  min-width: 40px;
}

.scp-loop-link svg {
  width: 100%;
  height: 100%;
}

.scp-eco-hint {
  margin: 18px 0 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.55);
  letter-spacing: 0.02em;
}

.dot-gold {
  flex-shrink: 0;
  width: 8px;
  height: 8px;
  margin-top: 9px;
  border-radius: 50%;
  background: var(--gold-500);
}

/* ==========================================================================
   10. SAAS PRODUCTS
   ========================================================================== */
.saas-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.saas-card {
  padding: 36px 30px;
  background: #fff;
  border: 1px solid var(--gray-100);
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  transition: transform 0.4s var(--ease-mech),
    border-color 0.4s var(--ease-mech), box-shadow 0.4s var(--ease-mech);
  position: relative;
}

.saas-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gold-500);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s var(--ease-mech);
}

.saas-card:hover {
  transform: translateY(-4px);
  border-color: var(--gold-500);
  box-shadow: var(--shadow-md);
}

.saas-card:hover::before {
  transform: scaleX(1);
}

.saas-card-top {
  display: flex;
  align-items: center;
  gap: 14px;
}

.saas-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--navy-900);
  background: linear-gradient(135deg, var(--gold-500), var(--gold-400));
  border-radius: var(--radius);
}

.saas-card h3 {
  font-size: 22px;
  font-weight: 600;
}

.saas-desc {
  margin-top: 18px;
  font-size: 14.5px;
  color: var(--gray-600);
}

.saas-url {
  margin-top: 18px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--gold-500);
  letter-spacing: 0.02em;
  padding-bottom: 14px;
  border-bottom: 1px dashed var(--gray-200);
}

.saas-tagline {
  margin-top: 18px;
  display: inline-block;
  align-self: flex-start;
  padding: 5px 12px;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--navy-900);
  background: var(--gold-100);
  border-radius: var(--radius-sm);
}

.saas-highlight {
  margin-top: 18px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.saas-highlight li {
  padding: 14px;
  background: var(--gray-50);
  border-radius: var(--radius);
  text-align: center;
}

.saas-highlight strong {
  display: block;
  font-family: var(--font-mono);
  font-size: 22px;
  color: var(--gold-500);
  font-weight: 700;
}

.saas-highlight span {
  display: block;
  margin-top: 4px;
  font-size: 12.5px;
  color: var(--gray-600);
}

.saas-features {
  margin-top: 18px;
  flex: 1 1 auto;
}

.saas-features li {
  position: relative;
  padding: 8px 0 8px 18px;
  font-size: 13.5px;
  color: var(--gray-800);
}

.saas-features li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 16px;
  width: 6px;
  height: 6px;
  border-right: 1.5px solid var(--gold-500);
  border-bottom: 1.5px solid var(--gold-500);
  transform: rotate(-45deg);
}

/* SaaS 卡片「立即体验」CTA */
.saas-cta {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin: 22px 0 0;
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 600;
  font-family: inherit;
  color: var(--navy-900);
  background: var(--gold-500);
  border: 1px solid var(--gold-500);
  border-radius: var(--radius);
  text-decoration: none;
  overflow: hidden;
  cursor: pointer;
  width: 100%;
  transition:
    color 0.35s var(--ease-mech),
    border-color 0.35s var(--ease-mech),
    transform 0.35s var(--ease-mech),
    box-shadow 0.35s var(--ease-mech);
  z-index: 0;
}

.saas-cta::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--navy-900);
  transform: translateX(-101%);
  transition: transform 0.45s var(--ease-mech);
  z-index: -1;
}

.saas-cta svg {
  transition: transform 0.35s var(--ease-mech);
}

.saas-cta:hover {
  color: #fff;
  border-color: var(--navy-900);
  transform: translateY(-2px);
  box-shadow: 0 14px 26px -16px rgba(10, 31, 68, 0.6);
}

.saas-cta:hover::before {
  transform: translateX(0);
}

.saas-cta:hover svg {
  transform: translate(2px, -2px);
}

.saas-cta:focus-visible {
  outline: 2px solid var(--gold-500);
  outline-offset: 3px;
}

.saas-cta-disabled,
.saas-cta-disabled:hover {
  color: var(--gray-600);
  background: transparent;
  border-color: var(--gray-100);
  box-shadow: none;
  transform: none;
  cursor: not-allowed;
}

.saas-cta-disabled::before {
  display: none;
}

.saas-cta-disabled svg {
  transform: none !important;
  opacity: 0.7;
}

/* SaaS 矩阵持续生长提示条 */
.saas-more {
  display: flex;
  align-items: center;
  gap: 24px;
  margin-top: 44px;
}

.saas-more-line {
  flex: 1 1 auto;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    var(--gray-100) 20%,
    var(--gray-100) 80%,
    transparent
  );
}

.saas-more-content {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 22px;
  background: var(--gray-50);
  border: 1px dashed var(--gray-100);
  border-radius: var(--radius);
  max-width: 640px;
  transition: border-color 0.3s var(--ease-mech), background 0.3s var(--ease-mech);
}

.saas-more-content:hover {
  border-color: rgba(212, 168, 75, 0.4);
  background: rgba(212, 168, 75, 0.04);
}

.saas-more-icon {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  color: var(--navy-900);
  background: #fff;
  border: 1px solid var(--gray-100);
  border-radius: 50%;
}

.saas-more-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.saas-more-text strong {
  font-size: 14.5px;
  font-weight: 700;
  color: var(--navy-900);
  letter-spacing: 0.01em;
}

.saas-more-text span {
  font-size: 13px;
  line-height: 1.7;
  color: var(--gray-600);
}

/* ==========================================================================
   11. CASES
   ========================================================================== */
.case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

/* 客户实践 - 世界地图 */
.section-desc-wide {
  max-width: 920px;
}

.worldmap {
  position: relative;
  margin: 8px auto 56px;
  padding: 24px;
  max-width: 1100px;
  background:
    radial-gradient(ellipse at 50% 50%, rgba(26, 58, 107, 0.35) 0%, rgba(10, 31, 68, 0) 70%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(255, 255, 255, 0));
  border: 1px solid rgba(212, 168, 75, 0.18);
  border-radius: var(--radius);
  overflow: hidden;
}

.worldmap-svg {
  display: block;
  width: 100%;
  height: auto;
}

/* 世界陆地轮廓 */
.wm-land {
  fill: rgba(26, 58, 107, 0.65);
  stroke: rgba(212, 168, 75, 0.35);
  stroke-width: 0.5;
  stroke-linejoin: round;
  stroke-linecap: round;
}

/* 中国高亮 */
.wm-china {
  fill: rgba(212, 168, 75, 0.28);
  stroke: #D4A84B;
  stroke-width: 0.9;
  stroke-linejoin: round;
}

/* 中国枢纽脉冲 */
.wm-pulse {
  transform-origin: center;
  transform-box: fill-box;
  animation: wm-pulse 2.6s var(--ease-mech) infinite;
}

.wm-pulse-2 {
  animation-delay: 1.3s;
}

@keyframes wm-pulse {
  0%   { transform: scale(0.6); opacity: 0.9; }
  70%  { transform: scale(2.6); opacity: 0; }
  100% { transform: scale(2.6); opacity: 0; }
}

/* 弧线绘制 */
.wm-arc-group path {
  stroke-dasharray: 400;
  stroke-dashoffset: 400;
  animation: wm-draw 3.2s var(--ease-mech) forwards;
}

.wm-arc-group path:nth-child(2) { animation-delay: 0.15s; }
.wm-arc-group path:nth-child(3) { animation-delay: 0.3s; }
.wm-arc-group path:nth-child(4) { animation-delay: 0.45s; }
.wm-arc-group path:nth-child(5) { animation-delay: 0.6s; }
.wm-arc-group path:nth-child(6) { animation-delay: 0.75s; }
.wm-arc-group path:nth-child(7) { animation-delay: 0.9s; }
.wm-arc-group path:nth-child(8) { animation-delay: 1.05s; }
.wm-arc-group path:nth-child(9) { animation-delay: 1.2s; }
.wm-arc-group path:nth-child(10) { animation-delay: 1.35s; }

@keyframes wm-draw {
  to { stroke-dashoffset: 0; }
}

.wm-hub-glow {
  animation: wm-glow 3.6s ease-in-out infinite;
}

@keyframes wm-glow {
  0%, 100% { opacity: 0.7; }
  50%      { opacity: 1; }
}

/* 数据流动点：沿弧线运动 */
.wm-dot {
  offset-rotate: 0deg;
  animation-name: wm-flow;
  animation-timing-function: linear;
  animation-iteration-count: infinite;
  opacity: 0;
}

@keyframes wm-flow {
  0%   { offset-distance: 0%;   opacity: 0; }
  8%   { opacity: 1; }
  92%  { opacity: 1; }
  100% { offset-distance: 100%; opacity: 0; }
}

@media (max-width: 767px) {
  .worldmap {
    padding: 14px 10px;
    margin-bottom: 40px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .wm-pulse,
  .wm-hub-glow,
  .wm-arc-group path,
  .wm-dot {
    animation: none !important;
  }
  .wm-arc-group path {
    stroke-dashoffset: 0;
  }
}

.case-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.4s var(--ease-mech),
    border-color 0.4s var(--ease-mech);
}

.case-card:hover {
  transform: translateY(-6px);
  border-color: rgba(212, 168, 75, 0.5);
}

.case-card-cover {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
}

.case-card-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.85) brightness(0.8);
  transition: transform 0.6s var(--ease-mech), filter 0.4s var(--ease-mech);
}

.case-card:hover .case-card-cover img {
  transform: scale(1.04);
  filter: saturate(1) brightness(0.9);
}

.case-card-cover::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(10, 31, 68, 0.1) 0%,
    rgba(10, 31, 68, 0.7) 100%
  );
}

.case-card-body {
  padding: 28px;
}

.case-card-body h3 {
  font-size: 21px;
  font-weight: 600;
}

.case-role {
  margin-top: 4px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--gold-500);
  text-transform: uppercase;
}

.case-desc {
  margin-top: 14px;
  font-size: 14.5px;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.75;
}

.case-tags {
  margin-top: 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.case-tags li {
  padding: 5px 11px;
  font-size: 12.5px;
  color: rgba(255, 255, 255, 0.85);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 999px;
}

.case-points {
  margin-top: 18px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.case-points li {
  position: relative;
  padding-left: 16px;
}

.case-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 6px;
  height: 6px;
  background: var(--gold-500);
  border-radius: 1px;
  transform: rotate(45deg);
}

.case-point-title {
  display: block;
  font-size: 14.5px;
  font-weight: 600;
  color: #fff;
  letter-spacing: 0.01em;
}

.case-point-desc {
  display: block;
  margin-top: 4px;
  font-size: 13.5px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.68);
}

/* ==========================================================================
   CTA BAND
   ========================================================================== */
.cta-band {
  padding: 72px 0;
  background:
    linear-gradient(135deg, var(--navy-900) 0%, var(--navy-800) 100%);
  border-top: 1px solid rgba(212, 168, 75, 0.3);
  border-bottom: 1px solid rgba(212, 168, 75, 0.3);
  position: relative;
  overflow: hidden;
}

.cta-band::before {
  content: "";
  position: absolute;
  right: -10%;
  top: -50%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(212, 168, 75, 0.12), transparent 60%);
  pointer-events: none;
}

.cta-inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}

.cta-inner h2 {
  color: #fff;
  font-size: clamp(22px, 2.4vw, 30px);
  font-weight: 600;
}

.cta-inner p {
  margin-top: 8px;
  color: rgba(255, 255, 255, 0.7);
  font-size: 15px;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.site-footer {
  background: #061533;
  color: rgba(255, 255, 255, 0.7);
  padding-top: 64px;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.4fr 2fr;
  gap: 56px;
  padding-bottom: 48px;
}

.brand-light {
  color: #fff;
}

.brand-light .brand-logo {
  height: 36px;
  /* 页脚深色背景上，将彩色 logo 转为纯白 */
  filter: brightness(0) invert(1);
}

.footer-slogan {
  margin-top: 18px;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.55);
  max-width: 380px;
}

.footer-company {
  margin-top: 14px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: #fff;
}

.footer-cols {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.footer-col h4 {
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  letter-spacing: 0.06em;
  margin-bottom: 16px;
}

.footer-col ul li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px 0;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  transition: color 0.25s var(--ease-mech);
}

.footer-col ul li a {
  transition: color 0.25s var(--ease-mech);
}

.footer-contact-sep {
  margin: 0 6px;
  color: rgba(255, 255, 255, 0.35);
}

.footer-col ul li:hover {
  color: var(--gold-500);
}

.footer-col ul li a:hover {
  color: var(--gold-500);
}

.footer-col svg {
  flex-shrink: 0;
  color: var(--gold-500);
  opacity: 0.8;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 20px 0;
}

.footer-bottom-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.45);
}

.footer-divider {
  opacity: 0.4;
}

.footer-police {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  color: rgba(255, 255, 255, 0.55);
  text-decoration: none;
  transition: color 0.25s var(--ease-mech);
}

.footer-police:hover {
  color: var(--gold-400);
}

.footer-police svg {
  flex: 0 0 auto;
}

.footer-icp {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  color: rgba(255, 255, 255, 0.55);
  text-decoration: none;
  transition: color 0.25s var(--ease-mech);
}

.footer-icp:hover {
  color: var(--gold-400);
}

.footer-icp svg {
  flex: 0 0 auto;
}

/* ==========================================================================
   REVEAL ANIMATION
   ========================================================================== */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s var(--ease-mech), transform 0.7s var(--ease-mech);
  will-change: opacity, transform;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */
@media (min-width: 1024px) {
  .scroll-hint {
    display: block;
  }
}

@media (max-width: 1023px) {
  .section {
    padding: 80px 0;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: #fff;
    padding: 8px 0;
    border-bottom: 1px solid var(--gray-100);
    box-shadow: var(--shadow-md);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s var(--ease-mech);
  }

  .site-header.nav-open .nav-links {
    max-height: 80vh;
    overflow-y: auto;
  }

  .nav-links a {
    color: var(--navy-900) !important;
    padding: 14px 24px;
    border-bottom: 1px solid var(--gray-100);
  }

  .nav-links a::after {
    display: none;
  }

  .nav-cta {
    display: none;
  }

  /* 移动端：语言切换分段控件紧凑显示 */
  .lang-switch {
    height: 34px;
    padding: 2px;
    font-size: 12px;
    border-color: var(--gray-100);
    background: #fff;
  }
  .site-header:not(.scrolled) .lang-switch {
    border-color: rgba(255, 255, 255, 0.45);
    background: rgba(255, 255, 255, 0.08);
  }
  .lang-option {
    min-width: 38px;
    padding: 0 10px;
    font-size: 12px;
  }
  .site-header:not(.scrolled) .lang-option {
    color: #fff;
  }
  .site-header:not(.scrolled) .lang-option.is-active {
    background: var(--gold-500);
    color: var(--navy-900);
  }

  .about-body,
  .design-layout {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .about-id {
    position: static;
  }

  .about-edges {
    grid-template-columns: repeat(2, 1fr);
  }

  .mission-strip::before,
  .mission-strip::after {
    display: none;
  }

  .timeline {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .timeline::before {
    top: 0;
    bottom: 0;
    left: 20px;
    right: auto;
    width: 1px;
    height: auto;
    background: linear-gradient(
      180deg,
      transparent,
      var(--gold-500) 8%,
      var(--gold-500) 92%,
      transparent
    );
  }

  .timeline-item {
    text-align: left;
    padding-left: 52px;
  }

  .timeline-dot {
    position: absolute;
    left: 13px;
    top: 6px;
    margin: 0;
  }

  .kpi-row,
  .matrix-grid,
  .iot-grid,
  .saas-grid,
  .case-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* 供应链平台：KPI 改 2×2，图文行改单列 */
  .scp-kpis {
    grid-template-columns: 1fr auto 1fr;
    padding: 24px;
    gap: 12px;
  }

  .scp-kpi-sep:nth-of-type(3) {
    display: none;
  }

  .plat-row,
  .plat-row-reverse {
    grid-template-columns: 1fr;
    gap: 28px;
    padding: 44px 0;
  }

  .plat-row-reverse .plat-shot,
  .plat-row-reverse .plat-text {
    order: unset;
  }

  .scp-eco {
    grid-template-columns: 1fr;
    gap: 28px;
    padding: 32px 28px;
  }

  .clients-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  /* 痛点对照：平板改为单列，左右变成上下 */
  .pa-row {
    grid-template-columns: 1fr;
  }

  .pa-cell-before {
    border-right: none;
    border-bottom: 1px dashed rgba(255, 255, 255, 0.1);
  }

  .pa-arrow {
    padding: 6px 0;
    background: linear-gradient(180deg,
      rgba(255, 255, 255, 0) 0%,
      rgba(212, 168, 75, 0.1) 50%,
      rgba(255, 255, 255, 0) 100%);
  }

  .pa-arrow svg {
    transform: rotate(90deg);
    animation-name: paArrowBobV;
  }

  @keyframes paArrowBobV {
    0%, 100% { transform: rotate(90deg) translateY(0); opacity: 0.55; }
    50% { transform: rotate(90deg) translateY(4px); opacity: 1; }
  }

  /* 产品亮点：平板保持双列但缩小间距 */
  .show-row,
  .show-row-reverse {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .show-row-reverse .show-text,
  .show-row-reverse .show-shot {
    order: unset;
  }

  .show-list {
    gap: 56px;
  }

  .more-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .flow {
    grid-template-columns: 1fr;
    gap: 0;
    padding: 24px;
  }

  .flow-line {
    width: 20px;
    height: 36px;
    transform: rotate(90deg);
    margin: 4px auto;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .matrix-card-dark {
    padding: 36px 32px;
  }

  .matrix-card-network {
    width: 420px;
    right: -40px;
    opacity: 0.7;
  }
}

@media (max-width: 767px) {
  .container {
    padding: 0 20px;
  }

  .section {
    padding: 64px 0;
  }

  .section-head {
    margin-bottom: 40px;
  }

  .hero-content {
    padding-top: 32px;
    padding-bottom: 32px;
  }

  .hero-ctas {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-ctas .btn {
    width: 100%;
  }

  .hero-stats-inner {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .hero-stat-divider {
    width: 60%;
    height: 1px;
    margin: 0 auto;
    background: linear-gradient(
      90deg,
      transparent,
      rgba(212, 168, 75, 0.4),
      transparent
    );
  }

  .kpi-row,
  .matrix-grid,
  .iot-grid,
  .saas-grid,
  .case-grid,
  .clients-grid,
  .scp-actors {
    grid-template-columns: 1fr;
  }

  /* SaaS 持续生长提示：手机端竖排，去掉两侧装饰线 */
  .saas-more {
    flex-direction: column;
    gap: 0;
    margin-top: 32px;
  }

  .saas-more-line {
    display: none;
  }

  .saas-more-content {
    max-width: 100%;
    padding: 16px 20px;
    text-align: left;
  }

  /* 供应链平台 KPI：手机单列 */
  .scp-kpis {
    grid-template-columns: 1fr;
    gap: 18px;
    padding: 24px 20px;
  }

  /* 关于初鸣：手机端排版收敛 */
  .about-lead {
    margin-bottom: 40px;
    font-size: 18px;
    line-height: 1.7;
    text-align: left;
  }

  .about-body {
    gap: 32px;
    margin-bottom: 48px;
  }

  .about-biz-list li {
    grid-template-columns: 1fr;
    gap: 6px;
    padding: 16px 0;
  }

  .about-id {
    position: static;
  }

  .about-id-body {
    padding: 24px 22px 22px;
  }

  .about-id-badge {
    font-size: 10.5px;
    padding: 6px 10px;
  }

  .about-edges {
    grid-template-columns: 1fr;
    gap: 14px;
    margin-bottom: 48px;
  }

  .mission-strip {
    padding: 32px 20px;
  }

  .mission-strip-text {
    font-size: 20px;
  }

  .scp-kpi-sep {
    display: none;
  }

  .scp-kpi-num {
    font-size: 32px;
  }

  .plat-row,
  .plat-row-reverse {
    gap: 24px;
    padding: 40px 0;
  }

  .plat-frame::before {
    height: 26px;
  }

  .plat-frame::after {
    top: 9px;
    left: 12px;
    transform: scale(0.85);
    transform-origin: left center;
  }

  .plat-frame img {
    padding-top: 26px;
  }

  .plat-stats {
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
  }

  .plat-stats strong {
    font-size: 20px;
  }

  .scp-eco {
    padding: 28px 22px;
    gap: 24px;
  }

  .scp-loop-node {
    width: 96px;
    padding: 12px 10px;
  }

  .scp-loop-node strong {
    font-size: 13px;
  }

  /* 痛点对照手机端 */
  .pa-cell {
    padding: 18px 20px;
  }

  .pa-cell p {
    font-size: 14px;
  }

  /* 产品亮点手机端：图文上下堆叠 */
  .show-block {
    margin: 72px 0 0;
  }

  .show-list {
    gap: 48px;
  }

  .show-row,
  .show-row-reverse {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .show-row-reverse .show-text { order: 2; }
  .show-row-reverse .show-shot { order: 1; }

  .show-text h4 {
    margin-top: 14px;
  }

  .show-shot-frame {
    padding: 10px;
  }

  .show-shot-frame::before {
    top: 8px;
    left: 12px;
  }

  .show-shot-frame img {
    margin-top: 16px;
  }

  .show-shot-frame:has(img.img-missing)::after {
    top: 28px;
    left: 10px;
    right: 10px;
    bottom: 38px;
    font-size: 12px;
  }

  .show-shot-frame figcaption {
    font-size: 12px;
  }

  .more-block {
    margin-top: 64px;
    padding-top: 40px;
  }

  .more-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .more-card {
    padding: 22px 20px;
  }

  .matrix-card-wide {
    grid-column: span 1;
  }

  .iot-metrics {
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
  }

  .iot-metric-num {
    font-size: 22px;
  }

  .matrix-card,
  .iot-card,
  .saas-card {
    padding: 28px 22px;
  }

  .matrix-icon {
    width: 60px;
    height: 60px;
  }

  .matrix-card-core .matrix-icon,
  .matrix-card-dark .matrix-icon {
    width: 56px;
    height: 56px;
  }

  .matrix-card-dark {
    padding: 32px 24px;
  }

  .matrix-card-network {
    width: 360px;
    right: -60px;
    opacity: 0.55;
  }

  .feature-card {
    padding: 26px 22px;
  }

  .footer-cols {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }

  .footer-bottom-inner {
    flex-direction: column;
    gap: 6px;
    text-align: center;
  }

  .footer-divider {
    display: none;
  }

  .cta-inner {
    flex-direction: column;
    align-items: stretch;
    text-align: center;
  }

  .cta-inner .btn {
    width: 100%;
  }

  .hide-mobile {
    display: none;
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .reveal {
    opacity: 1;
    transform: none;
  }
}