/* ==========================================================================
   itzhang.cn 首页 1:1 沉浸式视觉还原专用样式表
   版本标记: v20260920-unified-hero-v1
   基准视口: 1440px 桌面端
   ========================================================================== */

/* 全局重置与基础变量 */
:root {
  --font-base: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
  --color-gold: #ffd21f;
  --color-gold-hover: #ffe053;
  --color-gold-dark: #d97706;
  --color-dark-bg: #0b0e0c;
  --color-dark-card: #131715;
  --color-dark-border: rgba(255, 255, 255, 0.08);
  --color-light-bg: #f8fafc;
  --color-light-card: #ffffff;
  --color-light-border: #e2e8f0;
  --color-text-dark: #0f172a;
  --color-text-muted: #64748b;
  --container-max-width: 1320px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* 锚点滚动定位补偿（防止 68px 固定导航栏遮挡各章节标题） */
#solutions,
#services,
#cases,
#case-showcase,
#practice,
#footer,
#footer-section,
#contact {
  scroll-margin-top: 76px;
}

.anchor-target {
  display: block;
  position: relative;
  top: 0;
  visibility: hidden;
  height: 0;
  margin: 0;
  padding: 0;
  scroll-margin-top: 76px;
}

body.home-page-unified {
  font-family: var(--font-base);
  background-color: var(--color-dark-bg);
  color: #ffffff;
  line-height: 1.5;
  overflow-x: hidden;
  width: 100%;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 20px;
  background: var(--color-gold);
  color: #000;
  padding: 8px 16px;
  font-weight: 700;
  z-index: 9999;
  transition: top 0.2s;
}
.skip-link:focus {
  top: 20px;
}

/* 统一容器 */
.container-unified {
  width: 100%;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 40px;
}

/* ==========================================================================
   00: Header 网站头部导航
   ========================================================================== */
.site-header-unified {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 68px;
  z-index: 1000;
  background: rgba(11, 14, 12, 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
}

.header-container-unified {
  width: 100%;
  max-width: min(1440px, calc(100% - 64px));
  margin: 0 auto;
  padding: 0 clamp(32px, 5vw, 64px);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-unified {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand-logo-img {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  object-fit: cover;
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.4);
  display: block;
  flex-shrink: 0;
}

.brand-text-col {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-name-text {
  font-size: 21px;
  font-weight: 800;
  color: #ffffff;
  letter-spacing: -0.5px;
  line-height: 1;
  white-space: nowrap;
}

.brand-name-text span {
  color: var(--color-gold, #f5c518);
}

.brand-slogan-text {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.55);
  letter-spacing: 0.2px;
  white-space: nowrap;
  line-height: 1;
  border-left: 1px solid rgba(255, 255, 255, 0.18);
  padding-left: 14px;
}

/* 导航链接 */
.nav-unified {
  display: flex;
  align-items: center;
  gap: 34px;
}

.nav-link-item {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.72);
  text-decoration: none;
  font-weight: 500;
  position: relative;
  padding: 6px 0;
  transition: color 0.15s ease;
}

.nav-link-item:hover {
  color: var(--color-gold);
}

.nav-link-item.active {
  color: #ffffff;
  font-weight: 600;
}

.nav-mobile-cta {
  display: none;
}

.nav-link-item.active::after {
  content: "";
  position: absolute;
  bottom: -18px;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--color-gold);
  border-radius: 2px;
}

/* 咨询按钮 */
.header-right-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.btn-header-consult {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background-color: var(--color-gold);
  color: #0b0e0c;
  font-size: 14px;
  font-weight: 700;
  border-radius: 9999px;
  padding: 8px 20px;
  text-decoration: none;
  box-shadow: 0 2px 10px rgba(255, 210, 31, 0.2);
  transition: transform 0.15s ease, background-color 0.15s ease;
}

.btn-header-consult:hover {
  background-color: var(--color-gold-hover);
  transform: translateY(-1px);
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: #ffffff;
  cursor: pointer;
  padding: 4px;
}
/* ==========================================================================
   01: IT张工 Homepage Hero (全宽沉浸式融合背景 - 左右消隐与全景光影)
   ========================================================================== */
.home-hero {
  --hero-dark: #070b08;
  --hero-yellow: var(--color-gold, #ffd21a);

  position: relative;
  min-height: 820px;
  overflow: hidden;
  isolation: isolate;
  background: var(--hero-dark);
  color: #fff;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding-top: 68px; /* 避开固定在顶部的 fixed header */
}

/* 1. 主视觉图层 (全宽自适应全屏沉浸式铺满，彻底消除左右黑边) */
.home-hero__visual {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 100%;
  background-image: url('ref_assets/hero-visual-hd.webp');
  background-repeat: no-repeat;
  background-position: 70% 46%;
  background-size: cover;
  z-index: -4;
  filter: brightness(0.95) contrast(1.03) saturate(0.98);
}

/* 2. 全屏融合遮罩层 (透出左侧自然山体与公路流光 + 右侧柔和消隐 + 顶部自然过渡) */
.home-hero__atmosphere {
  position: absolute;
  inset: 0;
  z-index: -3;
  pointer-events: none;
  background:
    /* 左侧轻柔暗角：透出山体、星空与公路金光，同时给文字提供高对比度底衬 */
    linear-gradient(
      90deg,
      rgba(7, 11, 8, 0.55) 0%,
      rgba(7, 11, 8, 0.38) 22%,
      rgba(7, 11, 8, 0.10) 38%,
      transparent 52%
    ),
    /* 右侧消隐：轻柔隐入右侧边缘 */
    linear-gradient(
      270deg,
      rgba(7, 11, 8, 0.85) 0%,
      rgba(7, 11, 8, 0.40) 5%,
      transparent 14%
    ),
    /* 顶部微压暗：自然融入 Header */
    linear-gradient(
      180deg,
      rgba(4, 7, 5, 0.30) 0%,
      transparent 35%
    );
}

/* 3. 底部柔化渐隐层 (轻柔融入底部 Trust Bar) */
.home-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 160px;
  z-index: -1;
  pointer-events: none;
  background: linear-gradient(
    180deg,
    rgba(7, 11, 8, 0) 0%,
    rgba(7, 11, 8, 0.20) 28%,
    rgba(7, 11, 8, 0.68) 70%,
    rgba(7, 11, 8, 0.98) 100%
  );
}

/* 4. Hero 主内容区 (文字向右微调居中，留出 140px+ 呼吸感公路空间) */
.home-hero__inner {
  position: relative;
  z-index: 3;
  width: min(1440px, calc(100% - 64px));
  min-height: 640px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(480px, 520px) 1fr;
  align-items: center;
  padding-left: clamp(32px, 5vw, 64px);
  padding-right: clamp(24px, 4vw, 48px);
  padding-top: 36px;
  padding-bottom: 28px;
  flex: 1;
}

/* 5. 左侧文字区 */
.home-hero__copy {
  position: relative;
  max-width: 540px;
  padding-right: 16px;
}

.home-hero__copy::before {
  display: none;
}

.home-hero__eyebrow {
  display: inline-flex;
  align-items: center;
  margin-bottom: 20px;
  padding: 6px 14px;
  border: 1px solid rgba(255, 210, 26, 0.38);
  border-radius: 999px;
  background: rgba(255, 210, 26, 0.08);
  color: var(--hero-yellow);
  font-size: 13.5px;
  font-weight: 650;
  line-height: 1;
  letter-spacing: 0.5px;
}

.home-hero h1 {
  margin: 0;
  max-width: 600px;
  font-size: clamp(40px, 3.2vw, 54px);
  line-height: 1.2;
  letter-spacing: -0.025em;
  font-weight: 800;
  color: #ffffff;
  text-shadow: 0 2px 14px rgba(0, 0, 0, 0.95), 0 4px 28px rgba(0, 0, 0, 0.85);
}

.hero-h1-row {
  display: block;
  white-space: nowrap;
}

.home-hero h1 em {
  color: var(--hero-yellow);
  font-style: normal;
}

.home-hero__lead {
  max-width: 500px;
  margin: 22px 0 0;
  color: rgba(255, 255, 255, 0.82);
  font-size: 15.5px;
  line-height: 1.72;
  font-weight: 400;
  text-shadow: 0 1px 10px rgba(0, 0, 0, 0.9);
}

/* 6. CTA 按钮区 */
.home-hero__actions {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 28px;
}

.hero-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 0 24px;
  border-radius: 999px;
  text-decoration: none;
  font-size: 14.5px;
  font-weight: 700;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
}

.hero-btn:hover {
  transform: translateY(-2px);
}

.hero-btn--primary {
  color: #0b0e0c;
  background: var(--hero-yellow);
  box-shadow: 0 8px 24px rgba(255, 210, 26, 0.28);
}

.hero-btn--primary:hover {
  background: var(--color-gold-hover, #ffe053);
  box-shadow: 0 12px 30px rgba(255, 210, 26, 0.38);
}

.hero-btn--secondary {
  color: rgba(255, 255, 255, 0.94);
  border: 1px solid rgba(255, 255, 255, 0.35);
  background: rgba(18, 21, 18, 0.55);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.hero-btn--secondary:hover {
  border-color: rgba(255, 255, 255, 0.65);
  background: rgba(28, 31, 28, 0.75);
}

/* 7. 数据背书 (Stats Row) */
.home-hero__stats {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-top: 28px;
  padding-top: 4px;
}

.hero-stat-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.stat-number {
  font-size: 24px;
  font-weight: 800;
  color: var(--hero-yellow);
  line-height: 1.1;
  letter-spacing: -0.3px;
  font-family: var(--font-base);
}

.stat-label {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.70);
  white-space: nowrap;
  font-weight: 400;
}

.stat-sep {
  width: 1px;
  height: 24px;
  background: rgba(255, 255, 255, 0.16);
}

/* 8. 底部信任区 (Trust Bar) */
.home-hero__trust {
  position: relative;
  z-index: 4;
  width: 100%;
  border-top: 1px solid rgba(255, 255, 255, 0.09);
  background: linear-gradient(
    180deg,
    rgba(10, 13, 10, 0.25) 0%,
    rgba(7, 11, 8, 0.88) 100%
  );
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.home-hero__trust-inner {
  width: min(1320px, calc(100% - 64px));
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 0;
  min-height: 72px;
}

.trust-features-group {
  display: flex;
  align-items: center;
  gap: 24px;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 10px;
}

.trust-icon-circle {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid rgba(255, 210, 31, 0.45);
  background: radial-gradient(circle at 35% 35%, rgba(255, 210, 31, 0.15) 0%, rgba(255, 210, 31, 0.02) 100%);
  color: var(--hero-yellow);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 8px rgba(255, 210, 31, 0.12);
  flex-shrink: 0;
}

.trust-item-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.trust-item-text strong {
  color: #ffffff;
  font-size: 13.5px;
  font-weight: 700;
  letter-spacing: 0.2px;
}

.trust-item-text span {
  color: rgba(255, 255, 255, 0.60);
  font-size: 11.5px;
  line-height: 1.4;
  white-space: nowrap;
}

.trust-sep-line {
  width: 1px;
  height: 24px;
  background: rgba(255, 255, 255, 0.12);
}

.trust-signature-col {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  line-height: 1.25;
  padding-bottom: 2px;
}

.sig-txt-top {
  font-family: "Kaiti", "STKaiti", "KaiTi_GB2312", "Songti SC", cursive, serif;
  font-size: 13px;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.88);
  letter-spacing: 1px;
  font-style: italic;
  transform: rotate(-1.5deg);
}

.sig-txt-bottom {
  font-family: "Kaiti", "STKaiti", "KaiTi_GB2312", "Songti SC", cursive, serif;
  font-size: 15px;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: 1.5px;
  font-style: italic;
  transform: rotate(-1.5deg);
}

.sig-gold-stroke {
  position: absolute;
  bottom: -4px;
  right: 0;
  pointer-events: none;
}

/* 9. 大屏幕延展 (1600px+) */
@media (min-width: 1600px) {
  .home-hero__visual {
    width: max(100vw, 1920px);
    background-position: 56% 47%;
  }
}

/* 10. 中等桌面 (1200px) */
@media (max-width: 1200px) {
  .home-hero {
    min-height: 760px;
  }
  .home-hero__inner {
    grid-template-columns: 48% 52%;
  }
  .home-hero__visual {
    width: 1550px;
    background-position: 56% center;
  }
  .home-hero h1 {
    font-size: clamp(40px, 4.4vw, 50px);
  }
  .home-hero__trust-inner {
    flex-wrap: wrap;
    gap: 16px;
  }
}

/* 11. 平板与移动端 (900px) */
@media (max-width: 900px) {
  .home-hero {
    min-height: auto;
  }
  .home-hero__inner {
    min-height: 660px;
    grid-template-columns: 1fr;
    align-items: center;
    padding-top: 60px;
    padding-bottom: 60px;
  }
  .home-hero__copy {
    max-width: 100%;
  }
  .home-hero__visual {
    opacity: 0.65;
    width: 1300px;
    background-position: 67% center;
  }
  .home-hero__trust-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
  }
  .trust-features-group {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
  .trust-sep-line {
    display: none;
  }
}

/* 12. 减少动画 */
@media (prefers-reduced-motion: reduce) {
  .hero-btn {
    transition: none;
  }
  .hero-btn:hover {
    transform: none;
  }
}

/* Hero 到第二屏（Solution）的柔和过渡波浪层 */
.hero-to-solution-wave {
  width: 100%;
  height: 24px;
  overflow: hidden;
  position: relative;
  z-index: 10;
  line-height: 0;
  background-color: transparent;
}

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

/* ==========================================================================
   02: Section 02 - 三大核心解决方案（暖白背景）
   ========================================================================== */
.solutions-unified-section {
  background-color: var(--color-light-bg);
  padding: 50px 0 46px;
  color: var(--color-text-dark);
}

.section-header-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 28px;
}

.header-text-block {
  max-width: 800px;
}

.kicker-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 2px;
  color: var(--color-gold-dark);
  text-transform: uppercase;
  margin-bottom: 6px;
}

.section-title-dark {
  font-size: 30px;
  font-weight: 800;
  color: var(--color-text-dark);
  letter-spacing: -0.5px;
  margin-bottom: 8px;
}

.section-desc-light {
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.5;
}

.header-more-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-dark);
  text-decoration: none;
  transition: color 0.15s ease;
  white-space: nowrap;
}

.header-more-link:hover {
  color: var(--color-gold-dark);
}

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

.solution-card-item {
  background: var(--color-light-card);
  border: 1px solid var(--color-light-border);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 4px 18px rgba(0, 0, 0, 0.03);
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.solution-card-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.07);
}

.card-media-wrap {
  position: relative;
  width: 100%;
  height: 195px;
  background-color: #0b0e0c;
  overflow: hidden;
}

.card-media-wrap::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(0deg, rgba(11, 14, 12, 0.45) 0%, transparent 40%);
  pointer-events: none;
}

.card-watermark-num {
  position: absolute;
  bottom: 8px;
  left: 14px;
  font-size: 32px;
  font-weight: 900;
  color: rgba(255, 255, 255, 0.88);
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.8);
  z-index: 2;
  letter-spacing: -1px;
  line-height: 1;
}

.card-cover-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.solution-card-item:hover .card-cover-img {
  transform: scale(1.03);
}

.card-body-wrap {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.card-title {
  font-size: 20px;
  font-weight: 800;
  color: var(--color-text-dark);
  margin-bottom: 8px;
}

.card-subtags {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-gold-dark);
  margin-bottom: 12px;
}

.card-desc {
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: 22px;
  flex: 1;
}

.btn-card-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background-color: var(--color-gold);
  border: 1px solid var(--color-gold);
  border-radius: 9999px;
  padding: 10px 22px;
  font-size: 14px;
  font-weight: 700;
  color: #11130f;
  text-decoration: none;
  box-shadow: 0 4px 14px rgba(255, 210, 31, 0.28);
  transition: all 0.2s ease;
  margin-top: auto;
}

.btn-card-action:hover {
  background-color: var(--color-gold-hover);
  border-color: var(--color-gold-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(255, 210, 31, 0.42);
}

/* ==========================================================================
   03: Section 03 - 我们能提供的服务（横向 6 列白色卡片）
   ========================================================================== */
.services-unified-section {
  background-color: var(--color-light-bg);
  padding: 10px 0 50px;
  color: var(--color-text-dark);
}

.services-columns-box {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  background: var(--color-light-card);
  border: 1px solid var(--color-light-border);
  border-radius: 16px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.02);
  overflow: hidden;
  margin-top: 10px;
}

.service-col-item {
  padding: 22px 16px;
  border-right: 1px solid #f1f5f9;
  text-decoration: none;
  display: flex;
  flex-direction: column;
  transition: background-color 0.15s ease;
}

.service-col-item:last-child {
  border-right: none;
}

.service-col-item:hover {
  background-color: #fbfcfe;
}

.service-icon-wrap {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: #fff9ed;
  border: 1px solid rgba(255, 210, 31, 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
  transition: transform 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
}

.service-col-item:hover .service-icon-wrap {
  transform: translateY(-2px);
  background: #fef3c7;
  border-color: var(--color-gold);
}

.service-item-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-text-dark);
  margin-bottom: 6px;
}

.service-item-tags {
  font-size: 12px;
  color: var(--color-text-muted);
  line-height: 1.45;
}

/* ==========================================================================
   04: Section 04 - 方案示意 / 能力展示（高度 250px 精确对齐视觉稿）
   ========================================================================== */
.case-unified-section {
  background-color: var(--color-dark-bg);
  padding: 42px 0 46px;
  color: #ffffff;
}

.section-header-dark {
  max-width: 800px;
  margin-bottom: 20px;
}

.kicker-tag-gold {
  display: inline-block;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 2px;
  color: var(--color-gold);
  text-transform: uppercase;
  margin-bottom: 6px;
}

.section-title-white {
  font-size: 28px;
  font-weight: 800;
  color: #ffffff;
  letter-spacing: -0.5px;
  margin-bottom: 6px;
}

.section-desc-dark {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.65);
  line-height: 1.5;
}

/* 非对称案例展示网格（高度 268px 精确对齐视觉稿） */
.case-showcase-grid {
  display: grid;
  grid-template-columns: 1.45fr 1fr;
  gap: 18px;
  align-items: stretch;
}

/* 左侧大卡 (全景视觉大卡片，图文融合一体) */
.case-large-card {
  position: relative;
  background-color: var(--color-dark-card);
  border: 1px solid var(--color-dark-border);
  border-radius: 14px;
  overflow: hidden;
  height: 268px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.case-large-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.5);
}

.case-large-bg-wrap {
  position: absolute;
  inset: 0;
  z-index: 1;
}

.case-large-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center center;
  transition: transform 0.4s ease;
}

.case-large-card:hover .case-large-img {
  transform: scale(1.02);
}

.case-large-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    0deg,
    rgba(11, 14, 12, 0.95) 0%,
    rgba(11, 14, 12, 0.78) 38%,
    rgba(11, 14, 12, 0.2) 70%,
    rgba(11, 14, 12, 0.08) 100%
  );
  pointer-events: none;
}

.case-large-body {
  position: relative;
  z-index: 2;
  height: 100%;
  padding: 22px 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.case-badge-pill {
  display: inline-block;
  background: #f7df8d;
  color: #261c02;
  font-size: 11px;
  font-weight: 700;
  padding: 2.5px 10px;
  border-radius: 9999px;
  align-self: flex-start;
  letter-spacing: 0.3px;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.25);
}

.case-large-title {
  font-size: 20px;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 6px;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.8);
}

.case-large-desc {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.75);
  line-height: 1.45;
  margin-bottom: 14px;
  text-shadow: 0 1px 6px rgba(0, 0, 0, 0.8);
}

.case-btn-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(14, 18, 15, 0.75);
  border: 1px solid rgba(255, 210, 31, 0.55);
  color: var(--color-gold);
  font-size: 13px;
  font-weight: 600;
  border-radius: 9999px;
  padding: 6px 18px;
  text-decoration: none;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  transition: all 0.2s ease;
  align-self: flex-start;
}

.case-btn-pill:hover {
  background: rgba(255, 210, 31, 0.2);
  border-color: var(--color-gold);
  color: #ffffff;
  transform: translateY(-1px);
}

/* 右侧双叠卡片 (高 127px * 2 + 14px gap = 268px) */
.case-stacked-col {
  display: flex;
  flex-direction: column;
  gap: 14px;
  height: 268px;
}

.case-mini-card {
  position: relative;
  background-color: var(--color-dark-card);
  border: 1px solid var(--color-dark-border);
  border-radius: 14px;
  overflow: hidden;
  height: 127px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.case-mini-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.45);
}

.case-mini-bg-wrap {
  position: absolute;
  inset: 0;
  z-index: 1;
}

.case-mini-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.case-mini-img-retail {
  object-position: 84% 24%;
}

.case-mini-img-admin {
  object-position: 85% 45%;
}

.case-mini-card:hover .case-mini-img {
  transform: scale(1.03);
}

.case-mini-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    rgba(14, 18, 15, 0.98) 0%,
    rgba(14, 18, 15, 0.90) 38%,
    rgba(14, 18, 15, 0.50) 62%,
    rgba(14, 18, 15, 0.15) 82%,
    transparent 100%
  );
  pointer-events: none;
}

.case-mini-body {
  position: relative;
  z-index: 2;
  height: 100%;
  padding: 13px 18px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  max-width: 65%;
}

.case-mini-content {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.case-mini-title {
  font-size: 14.5px;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: 0.2px;
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.6);
}

.case-mini-desc {
  font-size: 11.5px;
  color: rgba(255, 255, 255, 0.72);
  line-height: 1.35;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.6);
}

.case-btn-pill-sm {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: rgba(14, 18, 15, 0.75);
  border: 1px solid rgba(255, 210, 31, 0.5);
  color: var(--color-gold);
  font-size: 11.5px;
  font-weight: 600;
  border-radius: 9999px;
  padding: 3px 13px;
  text-decoration: none;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  transition: all 0.2s ease;
  align-self: flex-start;
}

.case-btn-pill-sm:hover {
  background: rgba(255, 210, 31, 0.22);
  border-color: var(--color-gold);
  color: #ffffff;
  transform: translateY(-1px);
}

/* ==========================================================================
   05: Section 05 - 全景天际线转化区
   ========================================================================== */
.cta-skyline-section {
  position: relative;
  width: 100%;
  min-height: 200px;
  background: #080c09 url('ref_assets/cta-skyline-bg-clean.webp') no-repeat center 28%;
  background-size: cover;
  display: flex;
  align-items: center;
  border-top: 1px solid rgba(255, 210, 31, 0.35);
  box-shadow: 0 -2px 16px rgba(255, 210, 31, 0.15);
  overflow: hidden;
}

.cta-skyline-atmosphere {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(8, 12, 9, 0.95) 0%, rgba(8, 12, 9, 0.8) 38%, rgba(8, 12, 9, 0.22) 65%, rgba(8, 12, 9, 0.08) 100%),
    linear-gradient(0deg, #070908 0%, rgba(7, 9, 8, 0.85) 12%, rgba(7, 9, 8, 0) 35%);
  pointer-events: none;
  z-index: 1;
}

.cta-skyline-inner {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 42px 0 46px;
}

.cta-narrative-block {
  max-width: 680px;
}

.cta-headline-text {
  font-size: 24px;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 8px;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.7);
}

.cta-subline-text {
  font-size: 13.5px;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 16px;
  text-shadow: 0 1px 6px rgba(0, 0, 0, 0.7);
}

.cta-buttons-row {
  display: flex;
  align-items: center;
  gap: 14px;
}

.btn-cta-gold {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background-color: var(--color-gold);
  color: #0b0e0c;
  font-size: 14px;
  font-weight: 700;
  border-radius: 9999px;
  padding: 9px 22px;
  text-decoration: none;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.3);
  transition: transform 0.15s ease, background-color 0.15s ease;
}

.btn-cta-gold:hover {
  background-color: var(--color-gold-hover);
  transform: translateY(-1px);
}

.btn-cta-phone {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(14, 18, 15, 0.7);
  border: 1px solid rgba(255, 210, 31, 0.55);
  color: var(--color-gold);
  font-size: 14px;
  font-weight: 600;
  border-radius: 9999px;
  padding: 9px 20px;
  text-decoration: none;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: all 0.15s ease;
}

.btn-cta-phone:hover {
  background: rgba(255, 210, 31, 0.18);
}

.cta-cursive-box {
  display: flex;
  align-items: center;
  padding-right: 10px;
}

.cta-cursive-img {
  height: 74px;
  width: auto;
  filter: drop-shadow(0 2px 10px rgba(0, 0, 0, 0.7));
}

/* ==========================================================================
   06: Section 06 - 网站页尾 Footer（深黑紧凑 5 列）
   ========================================================================== */
.site-footer-unified {
  background-color: #070908;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 30px 0 16px;
  color: rgba(255, 255, 255, 0.75);
}

.footer-columns-grid-unified {
  display: grid;
  grid-template-columns: 1.25fr 0.9fr 0.9fr 0.9fr 1.85fr;
  gap: 24px;
  align-items: start;
}

/* 品牌列 */
.footer-brand-col {
  display: flex;
  flex-direction: column;
  height: 148px;
  justify-content: space-between;
}

.footer-brand-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 6px;
}

.footer-brand-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.footer-logo-img {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  object-fit: cover;
  display: block;
  flex-shrink: 0;
}

.footer-brand-title {
  font-size: 19px;
  font-weight: 800;
  color: #ffffff;
  letter-spacing: -0.5px;
  line-height: 1;
}

.footer-brand-title span {
  color: var(--color-gold, #f5c518);
}

.footer-brand-title {
  font-size: 17px;
  font-weight: 800;
  color: #ffffff;
}

.footer-brand-title span {
  color: var(--color-gold);
}

.footer-slogan-bold {
  font-size: 12.5px;
  font-weight: 600;
  color: var(--color-gold);
  margin-bottom: 6px;
}

.footer-desc-text {
  font-size: 12px;
  line-height: 1.55;
  color: rgba(255, 255, 255, 0.52);
  margin: 0;
}

/* 导航列 */
.footer-title-sm {
  font-size: 13.5px;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 10px;
  letter-spacing: 0.2px;
  height: 18px;
  line-height: 18px;
}

.footer-nav-list {
  display: flex;
  flex-direction: column;
  height: 120px;
  justify-content: space-between;
}

.footer-nav-list a {
  font-size: 12.5px;
  color: rgba(255, 255, 255, 0.58);
  text-decoration: none;
  line-height: 18px;
  transition: color 0.15s ease;
}

.footer-nav-list a:hover {
  color: var(--color-gold);
}

/* 联系列 - 底部对齐整合名片卡 */
.footer-contact-col {
  display: flex;
  flex-direction: column;
  height: 148px;
}

.footer-contact-card-aligned {
  display: flex;
  align-items: stretch;
  gap: 14px;
  background: rgba(255, 255, 255, 0.035);
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 10px;
  padding: 10px 12px;
  height: 120px;
  box-sizing: border-box;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.35);
  transition: border-color 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

.footer-contact-card-aligned:hover {
  border-color: rgba(255, 210, 31, 0.3);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.5);
  background: rgba(255, 255, 255, 0.05);
}

.footer-qr-frame-aligned {
  position: relative;
  width: 100px;
  height: 100px;
  background: #ffffff;
  border-radius: 6px;
  padding: 3px;
  box-sizing: border-box;
  flex-shrink: 0;
  text-decoration: none;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.45);
  overflow: hidden;
  transition: transform 0.2s ease;
}

.footer-qr-frame-aligned:hover {
  transform: scale(1.04);
}

.footer-qr-frame-aligned .footer-qr-img-large,
.footer-qr-frame-aligned img {
  width: 100% !important;
  height: 100% !important;
  max-width: 100px !important;
  max-height: 100px !important;
  object-fit: contain !important;
  display: block !important;
  image-rendering: -webkit-optimize-contrast !important;
}

.footer-qr-hover-hint {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(0, 0, 0, 0.8);
  color: #ffd21f;
  font-size: 10px;
  text-align: center;
  padding: 2px 0;
  opacity: 0;
  transition: opacity 0.2s ease;
  pointer-events: none;
}

.footer-qr-frame-aligned:hover .footer-qr-hover-hint {
  opacity: 1;
}

.footer-contact-info-aligned {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-width: 0;
  padding: 1px 0;
}

.footer-contact-phone-row {
  display: flex;
  flex-direction: column;
}

.footer-phone-val-aligned {
  font-size: 19px;
  font-weight: 800;
  color: var(--color-gold);
  text-decoration: none;
  letter-spacing: 0.3px;
  line-height: 1.15;
}

.footer-phone-sub-aligned {
  font-size: 11px;
  color: rgba(255, 255, 255, 0.48);
  margin-top: 2px;
  line-height: 1.2;
}

.footer-contact-wechat-row {
  display: flex;
  flex-direction: column;
  margin-top: 4px;
  padding-top: 4px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-wechat-title-aligned {
  font-size: 12.5px;
  font-weight: 700;
  color: #ffffff;
  display: flex;
  align-items: center;
  gap: 6px;
  line-height: 1.2;
}

.footer-wechat-badge-aligned {
  font-size: 10px;
  color: #4ade80;
  background: rgba(74, 222, 128, 0.12);
  border: 1px solid rgba(74, 222, 128, 0.25);
  padding: 0 5px;
  border-radius: 99px;
  font-weight: 500;
}

.footer-wechat-desc-aligned {
  font-size: 11px;
  color: rgba(255, 255, 255, 0.65);
  margin-top: 2px;
  line-height: 1.2;
}

.footer-qr-frame:hover .footer-qr-hover-hint {
  opacity: 1;
}

.footer-wechat-info {
  display: flex;
  flex-direction: column;
  gap: 3px;
  min-width: 0;
}

.footer-wechat-header {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 2px;
}

.footer-wechat-avatar {
  width: 20px;
  height: 20px;
  border-radius: 4px;
  object-fit: cover;
  image-rendering: -webkit-optimize-contrast;
}

.footer-wechat-author {
  font-size: 13px;
  font-weight: 700;
  color: #ffffff;
}

.footer-wechat-badge {
  font-size: 10.5px;
  color: #4ade80;
  background: rgba(74, 222, 128, 0.12);
  border: 1px solid rgba(74, 222, 128, 0.25);
  padding: 1px 6px;
  border-radius: 99px;
  font-weight: 500;
}

.footer-wechat-title {
  font-size: 14px;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: 0.2px;
}

.footer-wechat-sub {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.35;
}

.footer-wechat-desc {
  font-size: 11px;
  color: var(--color-gold);
  margin-top: 2px;
  font-weight: 500;
}

/* 底部合规条 */
.footer-bottom-bar-unified {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  margin-top: 20px;
  padding-top: 14px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.42);
}

.footer-filing-links {
  display: flex;
  align-items: center;
  gap: 8px;
}

.footer-filing-links a {
  color: rgba(255, 255, 255, 0.42);
  text-decoration: none;
  transition: color 0.15s ease;
}

.footer-filing-links a:hover {
  color: var(--color-gold);
}

.filing-dot {
  color: rgba(255, 255, 255, 0.25);
}

/* 移动端吸底操作栏 (桌面隐藏) */
.mobile-sticky-bar-unified {
  display: none;
}

/* ==========================================================================
   响应式处理（基础适配）
   ========================================================================== */
@media (max-width: 1024px) {
  .home-hero__visual {
    background-position: 78% center;
  }
  .home-hero__inner {
    grid-template-columns: 1fr;
    padding-left: 28px;
    padding-right: 28px;
  }
  .home-hero__atmosphere {
    background:
      linear-gradient(90deg, rgba(7, 11, 8, 0.70) 0%, rgba(7, 11, 8, 0.45) 60%, transparent 100%),
      linear-gradient(180deg, rgba(4, 7, 5, 0.40) 0%, transparent 40%);
  }
  .services-columns-box {
    grid-template-columns: repeat(3, 1fr);
  }
  .service-col-item {
    border-bottom: 1px solid #f1f5f9;
  }
  .footer-columns-grid-unified {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  /* 00. 移动端容器与统一内边距 */
  .container-unified {
    padding: 0 16px;
  }

  /* 00. 头部导航与下拉抽屉 */
  .brand-unified {
    display: flex;
    align-items: center;
    gap: 8px;
    min-width: 0;
  }
  .brand-logo-img {
    width: 34px;
    height: 34px;
    aspect-ratio: 1 / 1;
    border-radius: 7px;
    object-fit: contain;
    flex-shrink: 0;
  }
  .brand-text-col {
    display: flex;
    align-items: center;
    gap: 8px;
    min-width: 0;
  }
  .brand-name-text {
    font-size: 17px;
    font-weight: 800;
    color: #ffffff;
    letter-spacing: -0.3px;
    line-height: 1;
    white-space: nowrap;
    flex-shrink: 0;
  }
  .brand-name-text span {
    color: var(--color-gold, #f5c518);
  }
  .brand-slogan-text {
    display: block;
    font-size: 11.5px;
    color: rgba(255, 255, 255, 0.65);
    letter-spacing: 0.2px;
    white-space: nowrap;
    line-height: 1;
    border-left: 1px solid rgba(255, 255, 255, 0.22);
    padding-left: 8px;
    flex-shrink: 1;
  }
  .btn-header-consult {
    display: none;
  }
  .header-container-unified {
    padding: 0 12px;
    position: relative;
  }
  .nav-unified {
    display: none;
  }
  .nav-unified[data-open="true"] {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    width: 100vw;
    box-sizing: border-box;
    background: rgba(12, 16, 13, 0.98);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    padding: 16px 20px 24px;
    border-bottom: 1px solid rgba(255, 210, 31, 0.25);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.85);
    gap: 10px;
    z-index: 999;
    animation: mobileNavFade 0.2s ease;
  }
  @keyframes mobileNavFade {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: translateY(0); }
  }
  .nav-unified[data-open="true"] .nav-link-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    box-sizing: border-box;
    padding: 13px 18px;
    border-radius: 10px;
    font-size: 15px;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.9);
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.06);
    text-decoration: none;
    text-align: left;
    transition: all 0.15s ease;
  }
  .nav-unified[data-open="true"] .nav-link-item:hover,
  .nav-unified[data-open="true"] .nav-link-item.active {
    background: rgba(255, 210, 31, 0.12);
    border-color: rgba(255, 210, 31, 0.35);
    color: var(--color-gold);
  }
  .nav-unified[data-open="true"] .nav-mobile-cta {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    box-sizing: border-box;
    min-height: 46px;
    margin-top: 6px;
    background: var(--color-gold);
    color: #0b0e0c;
    font-weight: 700;
    font-size: 14.5px;
    border-radius: 9999px;
    text-decoration: none;
    border: none;
    box-shadow: 0 4px 14px rgba(255, 210, 31, 0.25);
  }
  .mobile-menu-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: #ffffff;
    cursor: pointer;
  }
  .mobile-menu-btn[aria-expanded="true"] {
    background: rgba(255, 210, 31, 0.15);
    border-color: var(--color-gold);
    color: var(--color-gold);
  }

  /* 01. Hero 首屏优化 */
  .home-hero {
    min-height: auto;
    padding-top: 64px;
    padding-bottom: 0px;
    position: relative;
    overflow: hidden;
  }
  .home-hero__visual {
    width: 100%;
    height: 100%;
    left: 0;
    right: 0;
    background-image: url('ref_assets/hero-mobile-pearl.webp');
    background-size: cover;
    background-position: right top;
    opacity: 0.88;
  }
  .home-hero__atmosphere {
    background: linear-gradient(180deg, rgba(7, 11, 8, 0.22) 0%, rgba(7, 11, 8, 0.45) 38%, rgba(7, 11, 8, 0.85) 75%, #070b08 100%),
                linear-gradient(90deg, rgba(7, 11, 8, 0.72) 0%, rgba(7, 11, 8, 0.28) 62%, transparent 100%);
  }
  .home-hero__inner {
    width: 100%;
    padding: 22px 16px 20px;
    grid-template-columns: 1fr;
    min-height: auto;
  }
  .home-hero__eyebrow {
    font-size: 11.5px;
    padding: 3px 12px;
    margin-bottom: 12px;
  }
  .home-hero h1 {
    font-size: clamp(24px, 7vw, 30px);
    line-height: 1.28;
    margin-bottom: 12px;
  }
  .hero-h1-row {
    white-space: normal;
    display: block;
  }
  .home-hero__lead {
    font-size: 13.5px;
    line-height: 1.55;
    margin-top: 10px;
    color: rgba(255, 255, 255, 0.75);
  }
  .home-hero__actions {
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
    margin-top: 18px;
  }
  .hero-btn {
    width: 100%;
    justify-content: center;
    min-height: 44px;
    padding: 10px 20px;
    font-size: 14px;
  }
  .home-hero__stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px 16px;
    margin-top: 18px;
    padding-top: 16px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
  }
  .hero-stat-item .stat-number {
    font-size: 26px;
  }
  .hero-stat-item .stat-label {
    font-size: 11.5px;
  }
  .stat-sep {
    display: none;
  }

  /* 01. 底部信任背书栏 (2x2 规整网格 + 居中印章) */
  .home-hero__trust {
    margin-top: 20px;
    padding: 14px 14px 12px;
    background: rgba(14, 18, 15, 0.75);
    border-radius: 12px;
  }
  .home-hero__trust-inner {
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
  }
  .trust-features-group {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px 8px;
    width: 100%;
  }
  .trust-item {
    gap: 8px;
    align-items: center;
  }
  .trust-icon-circle {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    flex-shrink: 0;
  }
  .trust-icon-circle svg {
    width: 13px;
    height: 13px;
  }
  .trust-item-text strong {
    font-size: 12px;
    white-space: nowrap;
    line-height: 1.2;
  }
  .trust-item-text span {
    display: none;
  }
  .trust-sep-line {
    display: none;
  }
  .trust-signature-col {
    align-self: center;
    align-items: center;
    width: 100%;
    margin-top: 4px;
    padding-top: 8px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
  }
  .sig-txt-top {
    font-size: 12px;
  }
  .sig-txt-bottom {
    font-size: 13.5px;
  }
  .sig-gold-stroke {
    width: 90px;
  }

  /* 02. Section 02 - 解决方案 */
  .solutions-unified-section {
    padding: 38px 0 36px;
  }
  .section-header-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    margin-bottom: 20px;
  }
  .section-title-dark {
    font-size: 23px;
    line-height: 1.3;
  }
  .section-desc-light {
    font-size: 13px;
    line-height: 1.5;
  }
  .header-more-link {
    font-size: 13px;
  }
  .solutions-cards-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .card-media-wrap {
    height: 180px;
  }
  .card-body-wrap {
    padding: 18px 16px;
  }
  .card-title {
    font-size: 18px;
  }
  .card-tags {
    font-size: 12px;
  }
  .card-desc {
    font-size: 13px;
    line-height: 1.5;
  }
  .btn-card-action {
    width: 100%;
    justify-content: center;
    min-height: 42px;
  }

  /* 03. Section 03 - 核心服务 */
  .services-unified-section {
    padding: 38px 0 36px;
  }
  .section-title-services {
    font-size: 23px;
    line-height: 1.3;
  }
  .section-desc-services {
    font-size: 13px;
    line-height: 1.5;
  }
  .services-columns-box {
    grid-template-columns: repeat(2, 1fr);
  }
  .service-col-item {
    padding: 16px 12px;
  }
  .service-icon-box {
    width: 38px;
    height: 38px;
    margin-bottom: 10px;
  }
  .service-col-title {
    font-size: 15px;
    margin-bottom: 4px;
  }
  .service-col-desc {
    font-size: 11.5px;
    line-height: 1.4;
  }

  /* 04. Section 04 - 方案展示与案例 */
  .case-unified-section {
    padding: 38px 0 36px;
  }
  .section-title-white {
    font-size: 23px;
    line-height: 1.3;
  }
  .section-desc-dark {
    font-size: 13px;
    line-height: 1.5;
  }
  .case-showcase-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }
  .case-large-card {
    height: 250px;
  }
  .case-large-body {
    padding: 16px 18px;
  }
  .case-large-title {
    font-size: 18px;
    line-height: 1.3;
  }
  .case-large-desc {
    font-size: 12px;
    line-height: 1.4;
    margin-bottom: 10px;
  }
  .case-btn-pill {
    padding: 5px 16px;
    font-size: 12px;
  }
  .case-stacked-col {
    height: auto;
    gap: 12px;
  }
  .case-mini-card {
    height: 142px;
  }
  .case-mini-body {
    padding: 12px 16px;
    max-width: 66%;
  }
  .case-mini-title {
    font-size: 14px;
  }
  .case-mini-desc {
    font-size: 11px;
  }
  .case-btn-pill-sm {
    padding: 3px 12px;
    font-size: 11px;
  }

  /* 05. Section 05 - CTA 晚霞全景 */
  .cta-skyline-section {
    height: auto;
    min-height: auto;
    padding: 36px 0 32px;
    background-position: center 35%;
  }
  .cta-skyline-inner {
    flex-direction: column;
    gap: 16px;
  }
  .cta-headline-text {
    font-size: 20px;
    line-height: 1.38;
    margin-bottom: 8px;
  }
  .cta-subline-text {
    font-size: 12.5px;
    line-height: 1.55;
    margin-bottom: 16px;
  }
  .cta-buttons-row {
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    gap: 10px;
  }
  .btn-cta-gold,
  .btn-cta-phone {
    width: 100%;
    justify-content: center;
    padding: 10px 18px;
    min-height: 44px;
  }
  .cta-cursive-box {
    display: none;
  }

  /* 06. Section 06 - 页尾与吸底栏 */
  .site-footer-unified {
    padding: 36px 0 calc(78px + env(safe-area-inset-bottom, 16px));
  }
  .footer-columns-grid-unified {
    grid-template-columns: 1fr 1fr;
    gap: 22px 16px;
  }
  .footer-brand-col {
    grid-column: 1 / -1;
    height: auto;
  }
  .footer-nav-list {
    height: auto;
    gap: 8px;
  }
  .footer-contact-col {
    grid-column: 1 / -1;
    height: auto;
  }
  .footer-contact-card-aligned {
    height: auto;
    padding: 12px;
    gap: 14px;
    max-width: 100%;
  }
  .footer-qr-frame-aligned {
    width: 96px;
    height: 96px;
  }
  .footer-phone-val-aligned {
    font-size: 21px;
  }
  .footer-bottom-bar-unified {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }
  .mobile-sticky-bar-unified {
    display: flex;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: calc(54px + env(safe-area-inset-bottom, 0px));
    padding-bottom: env(safe-area-inset-bottom, 0px);
    background: #0b0e0c;
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.4);
    z-index: 1000;
  }
  .mobile-bar-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 700;
    text-decoration: none;
    height: 54px;
  }
  .mobile-bar-btn.phone {
    color: #ffffff;
    background: #161b18;
  }
  .mobile-bar-btn.wecom {
    color: #0b0e0c;
    background: var(--color-gold);
  }
}

/* 桌面端悬浮微信客服 (移动端隐藏) */
.wechat-float {
  position: fixed;
  right: 24px;
  bottom: 30px;
  z-index: 88;
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 138px;
  padding: 11px 15px 11px 11px;
  border: 1px solid rgba(255,255,255,.5);
  border-radius: 999px;
  background: #07c160;
  color: #fff;
  box-shadow: 0 14px 36px rgba(0,0,0,.22);
  font-weight: 900;
  text-decoration: none;
  transition: transform .2s ease, box-shadow .2s ease;
}
.wechat-float:hover {
  color: #fff;
  transform: translateY(-3px);
  box-shadow: 0 18px 42px rgba(0,0,0,.28);
}
.wechat-float-icon {
  display: grid;
  flex: 0 0 34px;
  width: 34px;
  height: 34px;
  place-items: center;
  border-radius: 50%;
  background: #fff;
  color: #07a950;
  font-size: 16px;
  font-weight: 900;
}
.wechat-float-copy {
  display: grid;
  line-height: 1.1;
  font-size: 14px;
}
.wechat-float-copy small {
  margin-top: 4px;
  color: rgba(255,255,255,.82);
  font-size: 11px;
  font-weight: 700;
}
@media (max-width: 768px) {
  .wechat-float {
    display: none !important;
  }
}






/* ==========================================================================
   04.5: Section - 中小企业 AI 数智化转型实操解答 (AI Transformation & FAQ)
   ========================================================================== */
.ai-transformation-faq-section {
  background: #0d100e;
  padding: 68px 0 64px;
  position: relative;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.ai-faq-cards-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
  margin-top: 36px;
  margin-bottom: 30px;
}

.ai-faq-card {
  background: #131715;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 14px;
  padding: 26px 26px 24px;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
  display: flex;
  flex-direction: column;
}

.ai-faq-card:hover {
  transform: translateY(-3px);
  border-color: rgba(245, 197, 24, 0.35);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.45);
}

.ai-faq-badge-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.ai-faq-tag {
  font-size: 12px;
  font-weight: 700;
  color: var(--color-gold, #f5c518);
  background: rgba(245, 197, 24, 0.12);
  border: 1px solid rgba(245, 197, 24, 0.25);
  padding: 3px 10px;
  border-radius: 6px;
}

.ai-faq-num {
  font-size: 18px;
  font-weight: 900;
  color: rgba(255, 255, 255, 0.18);
  font-family: -apple-system, sans-serif;
}

.ai-faq-title {
  font-size: 17.5px;
  font-weight: 800;
  color: #ffffff;
  line-height: 1.45;
  margin: 0 0 12px;
  letter-spacing: -0.2px;
}

.ai-faq-answer {
  font-size: 13.5px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.68);
  margin: 0;
  flex-grow: 1;
}

.ai-faq-answer strong {
  color: #ffffff;
  font-weight: 700;
}

/* 底部行动条 */
.ai-faq-action-bar {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 12px;
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.ai-faq-action-left {
  display: flex;
  align-items: center;
  gap: 14px;
}

.ai-faq-action-icon {
  font-size: 26px;
}

.ai-faq-action-text strong {
  display: block;
  font-size: 14.5px;
  color: #ffffff;
  margin-bottom: 2px;
}

.ai-faq-action-text span {
  font-size: 12.5px;
  color: rgba(255, 255, 255, 0.55);
}

.ai-faq-action-btns {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}

.btn-faq-consult {
  background: var(--color-gold, #f5c518);
  color: #0b0e0c;
  padding: 8px 18px;
  border-radius: 20px;
  font-size: 13.5px;
  font-weight: 700;
  text-decoration: none;
  transition: opacity 0.2s ease;
}

.btn-faq-consult:hover {
  opacity: 0.9;
}

.btn-faq-link {
  color: rgba(255, 255, 255, 0.72);
  font-size: 13px;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  transition: color 0.15s ease;
}

.btn-faq-link:hover {
  color: var(--color-gold, #f5c518);
}

@media (max-width: 900px) {
  .ai-faq-cards-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .ai-faq-action-bar {
    flex-direction: column;
    align-items: flex-start;
    padding: 18px;
  }
  .ai-faq-action-btns {
    width: 100%;
    justify-content: space-between;
    margin-top: 10px;
  }
}