/* ============================================================
   main.css — 组件与页面样式
   依据：design-spec.md §5 组件样式、§6 断点、§7 线框
   ============================================================ */

/* ============================ 按钮（§5.1） ============================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 48px;
  padding: 0 var(--space-8);
  border-radius: var(--radius-md);
  font-size: 16px;
  font-weight: 600;
  line-height: 1;
  border: 1.5px solid transparent;
  text-decoration: none !important;
  transition: background-color 180ms ease-out, box-shadow 180ms ease-out,
              border-color 180ms ease-out, color 180ms ease-out,
              transform 180ms ease-out;
}
.btn-primary { background: var(--color-primary-600); color: var(--color-white); }
.btn-primary:hover { background: var(--color-primary-500); box-shadow: var(--shadow-btn-hover); transform: translateY(-1px); }
.btn-primary:active { background: var(--color-primary-800); box-shadow: none; }
.btn-primary[disabled], .btn-primary.is-disabled {
  background: var(--color-neutral-300); color: var(--color-neutral-50);
  box-shadow: none; cursor: not-allowed;
}

.btn-secondary {
  background: transparent;
  border-color: var(--color-primary-600);
  color: var(--color-primary-600);
}
.btn-secondary:hover { background: var(--color-primary-50); transform: translateY(-1px); }
.btn-secondary:active { background: var(--color-primary-100); }

/* 深色区块上的次按钮 */
.btn-secondary-on-dark {
  background: transparent;
  border-color: var(--color-cyan-300);
  color: var(--color-white);
}
.btn-secondary-on-dark:hover { background: rgba(103, 232, 249, .12); transform: translateY(-1px); }

/* 底部 CTA 带反白主按钮 */
.btn-invert { background: var(--color-white); color: var(--color-primary-700); }
.btn-invert:hover { background: var(--color-primary-100); transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

/* 文字按钮 */
.btn-text {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 44px;
  color: var(--color-primary-600);
  font-weight: 600;
  text-decoration: none;
}
.btn-text::after { content: "→"; }
.btn-text:hover { text-decoration: underline; text-underline-offset: 4px; }

/* ============================ 导航（§5.2） ============================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-h-desktop);
  background: rgba(255, 255, 255, .92);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-neutral-200);
  transition: box-shadow 150ms ease-out;
}
.site-header.is-scrolled { box-shadow: var(--shadow-nav); }
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: var(--space-6);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  min-height: 44px;
  text-decoration: none !important;
}
/* 品牌 logo 图片（白底图，圆角白卡容器深浅底通用） */
.brand-logo {
  height: 42px;
  width: auto;
  border-radius: 6px;
  background: var(--color-white);
  padding: 3px 8px;
  object-fit: contain;
  display: block;
}
.brand-mark {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: var(--gradient-tech);
  display: grid;
  place-items: center;
  color: var(--color-white);
  font-weight: 700;
  font-size: 15px;
  flex: none;
}
.brand-name {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-primary-700);
  letter-spacing: 0.02em;
  white-space: nowrap;
}
.brand-sub {
  font-size: 11px;
  color: var(--color-neutral-500);
  letter-spacing: 0.08em;
  display: block;
  line-height: 1.2;
}

.main-nav { display: flex; align-items: center; gap: var(--space-8); }
.main-nav a {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-size: 16px;
  font-weight: 500;
  color: var(--color-neutral-800);
  text-decoration: none !important;
  white-space: nowrap;
}
.main-nav a:hover { color: var(--color-primary-700); }
.main-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 6px;
  width: 100%;
  height: 2px;
  background: currentColor;
  opacity: 0;
  transform: scaleX(.2);
  transform-origin: left center;
  transition: opacity 180ms ease-out, transform 220ms ease-out;
}
.main-nav a:hover::after { opacity: .45; transform: scaleX(1); }
.main-nav a[aria-current="page"] { color: var(--color-primary-700); }
.main-nav a[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 6px;
  height: 2px;
  background: var(--color-primary-600);
}
.main-nav .btn { min-height: 40px; padding: 0 20px; }
/* CTA 按钮不受导航链接色与当前页下划线影响：保持白字蓝底 */
.main-nav a.btn-primary,
.main-nav a.btn-primary:hover,
.main-nav a.btn-primary[aria-current="page"] { color: var(--color-white); }
.main-nav a.btn-primary[aria-current="page"]::after { content: none; }

/* 汉堡按钮 */
.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 0;
  background: transparent;
  padding: 10px;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  margin: 5px auto;
  background: var(--color-neutral-800);
}

/* 移动端全屏抽屉 */
.nav-drawer {
  position: fixed;
  inset: 0;
  z-index: 150;
  background: var(--color-navy-900);
  transform: translateY(-100%);
  visibility: hidden;
  transition: transform 250ms ease-out, visibility 0s linear 250ms;
  display: flex;
  flex-direction: column;
  padding: var(--space-4) var(--space-6) var(--space-8);
}
.nav-drawer.is-open {
  transform: translateY(0);
  visibility: visible;
  transition: transform 250ms ease-out;
}
.nav-drawer-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: var(--nav-h-mobile);
  flex: none;
}
.nav-drawer-head .brand-name { color: var(--color-white); }
.nav-drawer-head .brand-sub { color: var(--color-neutral-400); }
.nav-drawer-close {
  width: 44px; height: 44px;
  border: 0; background: transparent;
  color: var(--color-white); font-size: 28px; line-height: 1;
}
.nav-drawer nav { display: flex; flex-direction: column; margin-top: var(--space-8); }
.nav-drawer nav a {
  display: flex;
  align-items: center;
  min-height: 56px;
  font-size: 20px;
  font-weight: 600;
  color: var(--color-white);
  text-decoration: none !important;
  border-left: 3px solid transparent;
  padding-left: var(--space-4);
}
.nav-drawer nav a[aria-current="page"] { border-left-color: var(--color-cyan-300); }
.nav-drawer .drawer-cta { margin-top: var(--space-8); }

@media (max-width: 1023px) {
  .site-header { height: var(--nav-h-mobile); }
  .main-nav { display: none; }
  .nav-toggle { display: block; }
  .brand-logo { height: 34px; }
}

/* ============================ 移动端底部浮条（§5.3） ============================ */
.float-bar {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  z-index: 120;
  display: none;
  height: calc(var(--floatbar-h) + env(safe-area-inset-bottom));
  padding-bottom: env(safe-area-inset-bottom);
  background: var(--color-white);
  border-top: 1px solid var(--color-neutral-200);
  box-shadow: var(--shadow-floatbar);
}
.float-bar a, .float-bar button {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  min-height: var(--floatbar-h);
  border: 0;
  background: transparent;
  color: var(--color-green-600);
  font-size: 12px;
  text-decoration: none !important;
}
.float-bar svg { width: 22px; height: 22px; }
.float-bar .float-cta {
  flex: 1.5;
  margin: 8px;
  min-height: 40px;
  border-radius: var(--radius-md);
  background: var(--color-primary-600);
  color: var(--color-white);
  font-size: 14px;
  font-weight: 600;
}
@media (max-width: 1023px) {
  .float-bar { display: flex; }
  body { padding-bottom: calc(var(--floatbar-h) + env(safe-area-inset-bottom)); }
}

/* ============================ pill 标签（§5.4） ============================ */
.pill {
  display: inline-block;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  background: var(--color-primary-100);
  color: var(--color-primary-700);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.04em;
}
.pill-on-dark {
  background: rgba(103, 232, 249, .12);
  color: var(--color-cyan-300);
  border: 1px solid rgba(103, 232, 249, .35);
}

/* ============================ 卡片（§5.4） ============================ */
.card {
  background: var(--color-white);
  border: 1px solid var(--color-neutral-200);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
}
a.card, .card-clickable {
  display: block;
  text-decoration: none !important;
  color: inherit;
  transition: border-color 200ms ease-out, box-shadow 200ms ease-out, transform 200ms ease-out;
}
a.card:hover, .card-clickable:hover {
  border-color: var(--color-primary-600);
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-2px);
}
.card-icon {
  width: 40px; height: 40px;
  color: var(--color-primary-600);
  margin-bottom: var(--space-4);
}
.card-icon svg { width: 100%; height: 100%; }
.card h3, .card h4 { margin-bottom: var(--space-3); }
.card .pill { margin-bottom: var(--space-3); }
.card p { color: var(--color-neutral-600); margin-bottom: var(--space-4); }
.card .btn-text { margin-top: auto; }

/* ============================ Hero（首页 §7.1①） ============================ */
.hero {
  background: #071428;
  color: var(--color-white);
  padding-block: 120px;
  position: relative;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  max-width: none;
  object-fit: cover;
  object-position: right center;
  pointer-events: none;
  user-select: none;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(90deg, rgba(7, 20, 40, .86) 0%, rgba(7, 20, 40, .64) 36%, rgba(7, 20, 40, .28) 62%, rgba(7, 20, 40, .08) 100%);
  pointer-events: none;
}
.hero::after { content: none; }
.hero .container > * {
  animation: hero-enter 600ms ease-out backwards;
}
.hero .container > *:nth-child(1) { animation-delay: 50ms; }
.hero .container > *:nth-child(2) { animation-delay: 130ms; }
.hero .container > *:nth-child(3) { animation-delay: 210ms; }
.hero .container > *:nth-child(4) { animation-delay: 290ms; }
.hero .container > *:nth-child(5) { animation-delay: 370ms; }
@keyframes hero-enter {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: translateY(0); }
}
.hero .container { position: relative; z-index: 2; }
.hero h1 { color: var(--color-white); max-width: 800px; }
.hero .hero-sub {
  font-size: 18px;
  color: var(--color-neutral-200);
  max-width: 640px;
  margin-bottom: var(--space-8);
}
.hero .pill-on-dark { margin-bottom: var(--space-6); }
.hero-actions { display: flex; flex-wrap: wrap; gap: var(--space-4); margin-bottom: var(--space-16); }
.hero .num-gradient { font-size: inherit; }

.hero-trust {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--gutter);
  border-top: 1px solid rgba(255, 255, 255, .18);
  padding-top: var(--space-8);
}
.hero-trust .trust-item strong {
  display: block;
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 32px;
  font-weight: 700;
  color: var(--color-cyan-300);
  line-height: 1.2;
}
.hero-trust .trust-item span { font-size: 14px; color: var(--color-neutral-300); }

/* 信任语一行（广告法合规版，不含数量表述） */
.hero-trust-line {
  border-top: 1px solid rgba(255, 255, 255, .18);
  padding-top: var(--space-6);
  font-size: 15px;
  color: var(--color-neutral-200);
  max-width: none;
  margin-bottom: 0;
  letter-spacing: 0.02em;
}

@media (max-width: 1023px) {
  .hero { padding-block: 96px 64px; }
  .hero-bg { object-position: 72% center; }
  .hero::before {
    background: linear-gradient(180deg, rgba(7, 20, 40, .66) 0%, rgba(7, 20, 40, .5) 48%, rgba(7, 20, 40, .72) 100%);
  }
  .hero .hero-sub { font-size: 17px; }
  .hero-actions { margin-bottom: var(--space-12); }
  .hero-trust { grid-template-columns: repeat(2, 1fr); gap: var(--space-6); }
  .hero-trust .trust-item strong { font-size: 26px; }
}

/* ============================ 痛点区 ============================ */
.pain-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--gutter);
  margin-bottom: var(--space-8);
}
.pain-grid .card h3,
.module-grid .card h3 {
  display: flex;
  align-items: center;
  gap: 10px;
}
.pain-grid .card h3 img,
.module-grid .card h3 img {
  width: 22px;
  height: 22px;
  flex: 0 0 22px;
  object-fit: contain;
}
.pain-grid .card p { font-size: 15px; margin-bottom: 0; }
.pain-carry { font-size: 18px; color: var(--color-neutral-600); max-width: 760px; }

@media (max-width: 1023px) { .pain-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 639px) { .pain-grid { grid-template-columns: 1fr; } }

/* ============================ 五大模块速览卡 ============================ */
.module-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: var(--gutter);
  margin-bottom: var(--space-8);
}
/* 3 + 2 两行：前三个占 2 列，后两个占 3 列 */
.module-grid > :nth-child(-n+3) { grid-column: span 2; }
.module-grid > :nth-child(n+4) { grid-column: span 3; }
.module-grid .card { display: flex; flex-direction: column; }

@media (max-width: 1023px) {
  .module-grid > * { grid-column: span 3 !important; }
}
@media (max-width: 639px) {
  .module-grid > * { grid-column: span 6 !important; }
}

/* ============================ 效能数字岛（§5.8） ============================ */
.data-island {
  background: var(--color-navy-900);
  border-radius: var(--radius-xl);
  padding: var(--space-16);
  color: var(--color-white);
}
.data-island h2 { color: var(--color-white); }
.data-island-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--gutter);
  margin-block: var(--space-12);
}
.data-metric .num-display { display: block; margin-bottom: var(--space-2); }
.data-metric .metric-name { font-size: 16px; font-weight: 500; color: var(--color-white); margin-bottom: var(--space-1); }
.data-metric .metric-src { font-size: 13px; color: var(--color-neutral-400); }
.data-metric {
  transition: transform 220ms ease-out;
}
.data-metric:hover { transform: translateY(-3px); }

.lever-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3) var(--gutter);
  border-top: 1px solid rgba(255, 255, 255, .12);
  padding-top: var(--space-8);
  margin-bottom: var(--space-8);
}
.lever-grid li {
  list-style: none;
  font-size: 14px;
  color: var(--color-neutral-300);
  padding-left: var(--space-4);
  border-left: 3px solid var(--color-navy-800);
  margin-bottom: 0;
}
.lever-grid li strong { color: var(--color-cyan-300); font-weight: 600; }

@media (max-width: 1023px) {
  .data-island { padding: var(--space-8); }
  .data-island-grid { grid-template-columns: repeat(2, 1fr); }
  .lever-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 639px) {
  .lever-grid { grid-template-columns: 1fr; }
}

/* ============================ 屏幕卡（§5.9）与图片卡 ============================ */
.screen-card {
  background: var(--color-navy-900);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
}
.screen-card-bar {
  display: flex;
  align-items: center;
  height: 32px;
  margin-bottom: var(--space-4);
  position: relative;
}
.screen-card-bar .dots { display: flex; gap: 6px; }
.screen-card-bar .dots i {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--color-screen-dot);
}
.screen-card-bar figcaption,
.screen-card-bar .caption {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  font-size: 13px;
  color: var(--color-neutral-400);
  white-space: nowrap;
  max-width: 80%;
  overflow: hidden;
  text-overflow: ellipsis;
}
.screen-card img { border-radius: var(--radius-md); width: 100%; }
/* 竖版海报嵌入屏幕卡时按 4:3 裁取顶部局部 */
.screen-card .crop-43 {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border-radius: var(--radius-md);
  cursor: zoom-in;
}
.screen-card .crop-43 img {
  height: 100%;
  object-fit: cover;
  object-position: top center;
}

/* 浅色图片卡（海报/实拍图，4:3 裁切） */
.photo-card {
  background: var(--color-white);
  border: 1px solid var(--color-neutral-200);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.photo-card .photo-frame {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  cursor: zoom-in;
}
.photo-card .photo-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  transition: transform 300ms ease-out;
}
.photo-card .photo-frame:hover img { transform: scale(1.02); }
.photo-card figcaption {
  padding: var(--space-3) var(--space-4);
  font-size: 14px;
  color: var(--color-neutral-600);
}

/* Lightbox */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 180;
  background: rgba(10, 30, 60, .9);
  display: none;
  align-items: center;
  justify-content: center;
  padding: var(--space-6);
}
.lightbox.is-open { display: flex; }
.lightbox img {
  max-width: min(92vw, 560px);
  max-height: 86vh;
  object-fit: contain;
  border-radius: var(--radius-md);
}
.lightbox-close {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  width: 44px; height: 44px;
  border: 0; border-radius: 50%;
  background: rgba(255, 255, 255, .12);
  color: var(--color-white);
  font-size: 24px;
  line-height: 1;
}

/* ============================ 视频入口条 / CTA 带 ============================ */
.cta-band {
  background: var(--gradient-hero);
  color: var(--color-white);
}
.cta-band h2 { color: var(--color-white); }
.cta-band p { color: var(--color-neutral-200); }
.cta-band .cta-actions { display: flex; flex-wrap: wrap; gap: var(--space-4); align-items: center; margin-top: var(--space-8); }
.cta-band .cta-note { margin-top: var(--space-4); font-size: 14px; color: var(--color-neutral-300); }
.cta-band a.cta-phone { color: var(--color-white); font-weight: 600; }

/* 视频入口条（§5.12，首页区块⑦专用，轻条块——过桥不是景点） */
.video-strip {
  background: var(--color-white);
  border-top: 1px solid var(--color-neutral-200);
  border-bottom: 1px solid var(--color-neutral-200);
  padding-block: var(--space-6);
}
.video-strip .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
}
.video-strip-icon {
  flex: none;
  width: 40px; height: 40px;
  border-radius: 50%;
  background: var(--color-primary-50);
  display: grid;
  place-items: center;
}
.video-strip-icon svg {
  display: block;
  width: 16px;
  height: 16px;
  fill: var(--color-primary-600);
}
.video-strip-text { display: flex; align-items: center; gap: var(--space-4); min-width: 0; }
.video-strip-text strong { font-size: 16px; font-weight: 600; color: var(--color-neutral-900); display: block; }
.video-strip-text > div span { font-size: 14px; color: var(--color-neutral-600); display: block; }
@media (max-width: 639px) {
  .video-strip { padding-block: 20px; }
  .video-strip-text > div span { display: none; } /* 移动端副文隐藏，只留标题 */
}

/* ============================ 资质徽标行 ============================ */
.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
}
.badge-item {
  padding: var(--space-2) var(--space-4);
  border: 1px solid var(--color-neutral-300);
  border-radius: var(--radius-pill);
  font-size: 14px;
  color: var(--color-neutral-500);
  background: var(--color-white);
  transition: color 200ms, border-color 200ms;
}
.badge-item:hover { color: var(--color-primary-700); border-color: var(--color-primary-600); }

/* ============================ 页脚（§5.11） ============================ */
.site-footer {
  background: var(--color-navy-900);
  color: var(--color-neutral-300);
  padding: var(--space-16) 0 var(--space-8);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1.2fr;
  gap: var(--space-12);
  margin-bottom: var(--space-12);
}
.site-footer .brand-name { color: var(--color-white); }
.site-footer .brand-sub { color: var(--color-neutral-400); }
.footer-slogan { font-size: 16px; color: var(--color-neutral-300); margin-top: var(--space-4); }
.footer-col h2, .footer-col h3 {
  font-size: 14px;
  color: var(--color-white);
  font-weight: 600;
  margin-bottom: var(--space-4);
}
.footer-col ul { list-style: none; padding: 0; margin: 0; }
.footer-col li { margin-bottom: 0; }
.footer-col a {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  font-size: 14px;
  color: var(--color-neutral-300);
  text-decoration: none !important;
}
.footer-col a:hover { color: var(--color-white); }
.footer-phone {
  font-size: 20px;
  font-weight: 600;
  color: var(--color-white) !important;
}
.footer-addr { font-size: 14px; line-height: 1.8; margin-top: var(--space-2); }
.footer-legal {
  border-top: 1px solid rgba(255, 255, 255, .12);
  padding-top: var(--space-6);
  font-size: 13px;
  color: var(--color-neutral-500);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-6);
  justify-content: center;
}
.footer-legal a { color: var(--color-neutral-500); }
.footer-legal a:hover { color: var(--color-white); }
.public-security-record {
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

@media (max-width: 1023px) {
  .footer-grid { grid-template-columns: 1fr; gap: var(--space-8); }
}

/* ============================ 面包屑 ============================ */
.breadcrumb {
  font-size: 14px;
  color: var(--color-neutral-500);
  padding-top: var(--space-6);
}
.breadcrumb a { color: var(--color-neutral-500); }
.breadcrumb ol { list-style: none; display: flex; gap: var(--space-2); padding: 0; margin: 0; }
.breadcrumb li { margin: 0; }
.breadcrumb li + li::before { content: "›"; margin-right: var(--space-2); color: var(--color-neutral-400); }

/* ============================ 平台页 ============================ */
.page-head { padding-block: var(--space-24) var(--space-12); text-align: center; }
.page-head h1 { margin-inline: auto; max-width: 800px; }
.page-head .section-lead { margin-inline: auto; max-width: 760px; margin-bottom: 0; }
@media (max-width: 1023px) { .page-head { padding-block: var(--space-16) var(--space-8); } }

/* 吸顶锚点子导航 */
.sub-nav {
  position: sticky;
  top: var(--nav-h-desktop);
  z-index: 90;
  background: rgba(255, 255, 255, .92);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-neutral-200);
}
.sub-nav ul {
  list-style: none;
  display: flex;
  gap: var(--space-2);
  padding: 0;
  margin: 0;
  overflow-x: auto;
}
.sub-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 var(--space-4);
  font-size: 15px;
  font-weight: 500;
  color: var(--color-neutral-600);
  text-decoration: none !important;
  white-space: nowrap;
  border-bottom: 2px solid transparent;
}
.sub-nav a.is-active {
  color: var(--color-primary-700);
  border-bottom-color: var(--color-cyan-500);
}
@media (max-width: 1023px) {
  .sub-nav { top: var(--nav-h-mobile); }
  .sub-nav .container { padding-inline: 0 var(--container-pad); }
}

/* 模块节 */
.module-section { scroll-margin-top: calc(var(--nav-h-desktop) + 56px); }
@media (max-width: 1023px) { .module-section { scroll-margin-top: calc(var(--nav-h-mobile) + 52px); } }
.module-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: start;
}
.module-split.is-flipped .module-media { order: -1; }
.module-section h3 { margin-top: var(--space-3); }
.module-tagline { font-size: 18px; color: var(--color-neutral-800); font-weight: 600; margin-bottom: var(--space-6); }
.feature-list { list-style: none; padding: 0; margin: 0 0 var(--space-6); }
.feature-list li {
  position: relative;
  padding-left: var(--space-6);
  margin-bottom: var(--space-3);
  color: var(--color-neutral-600);
  font-size: 15px;
}
.feature-list li::before {
  content: "";
  position: absolute;
  left: 0; top: 10px;
  width: 8px; height: 8px;
  border-radius: 2px;
  background: var(--gradient-tech);
}
.value-line {
  border-left: 3px solid var(--color-primary-600);
  padding: var(--space-2) var(--space-4);
  color: var(--color-primary-700);
  font-weight: 600;
  background: var(--color-primary-50);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  max-width: none;
}
@media (max-width: 1023px) {
  .module-split { grid-template-columns: 1fr; gap: var(--space-8); }
  .module-split.is-flipped .module-media { order: 0; }
}

/* 三位一体体系卡 */
.tier-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gutter);
  margin-top: var(--space-12);
}
.tier-grid .card { text-align: left; }
.tier-grid .tier-level {
  font-size: 13px;
  color: var(--color-cyan-700);
  font-weight: 600;
  letter-spacing: 0.06em;
  margin-bottom: var(--space-2);
}
@media (max-width: 1023px) { .tier-grid { grid-template-columns: 1fr; } }

/* 参数小卡（精准衔接·无人车） */
.spec-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
}
.spec-grid .spec-item {
  background: var(--color-neutral-50);
  border: 1px solid var(--color-neutral-200);
  border-radius: var(--radius-md);
  padding: var(--space-4);
}
.spec-grid .spec-item strong {
  display: block;
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 24px;
  color: var(--color-primary-700);
}
.spec-grid .spec-item span { font-size: 13px; color: var(--color-neutral-600); }

/* 效能对撞（平台页⑦） */
.island-dark { background: var(--color-navy-900); color: var(--color-white); }
.island-dark h2 { color: var(--color-white); }
.versus {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: var(--space-8);
  text-align: center;
  margin-block: var(--space-12);
}
.versus .vs-side .num-display { display: block; }
.versus .vs-side .vs-label { font-size: 16px; color: var(--color-neutral-300); margin-top: var(--space-2); }
.versus .vs-old .num-display { color: var(--color-neutral-400); }
.versus .vs-mark {
  font-size: 20px;
  color: var(--color-cyan-300);
  font-weight: 700;
}
@media (max-width: 639px) {
  .versus { grid-template-columns: 1fr; gap: var(--space-4); }
}

/* ============================ 表格（§5.6） ============================ */
.table-scroll { overflow-x: auto; }
.table-hint {
  display: none;
  font-size: 14px;
  color: var(--color-neutral-500);
  margin-bottom: var(--space-2);
}
@media (max-width: 639px) { .table-hint { display: block; } }

.data-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-white);
  color: var(--color-neutral-900);
  border: 1px solid var(--color-neutral-200);
  border-radius: var(--radius-lg);
  overflow: hidden;
  min-width: 560px;
}
.data-table th {
  background: var(--color-primary-50);
  color: var(--color-primary-700);
  font-size: 14px;
  font-weight: 600;
  padding: 12px 16px;
  text-align: left;
}
.data-table td {
  font-size: 16px;
  padding: 0 16px;
  height: 56px;
  border-top: 1px solid var(--color-neutral-200);
  font-variant-numeric: tabular-nums;
}
.data-table tr.total td {
  font-weight: 700;
  background: var(--color-neutral-50);
}
.delta-down { color: var(--color-success-text); font-weight: 600; }
.delta-up { color: var(--color-danger-text); font-weight: 600; }
.delta-flat { color: var(--color-neutral-500); }
/* 效能提升等「向好」指标（与车次下降同语义色） */
.delta-good { color: var(--color-success-text); font-weight: 600; }

/* 政策契合区块 */
.policy-badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: var(--color-primary-700);
  background: var(--color-primary-50);
  border: 1px solid var(--color-primary-100, #dbe7ff);
  border-radius: 999px;
  padding: 2px 10px;
  margin-bottom: var(--space-3);
}
.policy-src {
  font-size: 13px;
  color: var(--color-neutral-500);
  margin-top: var(--space-8);
  max-width: none;
}

/* 两列卡片网格（查新点等） */
.grid-2 { grid-template-columns: repeat(2, 1fr) !important; }
@media (max-width: 639px) { .grid-2 { grid-template-columns: 1fr !important; } }

/* 关于页地址条：桌面单行显示，移动端允许换行 */
.addr-line { white-space: nowrap; }
@media (max-width: 639px) { .addr-line { white-space: normal; } }

/* ============================ 提示条 Alert（§5.7） ============================ */
.alert {
  border-radius: var(--radius-md);
  padding: 12px 16px;
  border-left: 3px solid;
  font-size: 14px;
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
  max-width: none;
}
.alert::before {
  content: "";
  flex: none;
  width: 20px; height: 20px;
  margin-top: 2px;
  background: currentColor;
  -webkit-mask: var(--alert-icon) center / contain no-repeat;
  mask: var(--alert-icon) center / contain no-repeat;
}
.alert-info {
  --alert-icon: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2'%3E%3Ccircle cx='12' cy='12' r='9'/%3E%3Cpath d='M12 8h.01M12 11v5'/%3E%3C/svg%3E");
  background: var(--color-info-bg);
  color: var(--color-info-text);
  border-left-color: var(--color-info-text);
}
.alert-success {
  --alert-icon: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2'%3E%3Ccircle cx='12' cy='12' r='9'/%3E%3Cpath d='m8.5 12.5 2.5 2.5 4.5-5'/%3E%3C/svg%3E");
  background: var(--color-success-bg);
  color: var(--color-success-text);
  border-left-color: var(--color-success-text);
}
.alert-danger {
  --alert-icon: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2'%3E%3Ccircle cx='12' cy='12' r='9'/%3E%3Cpath d='M12 7v6M12 16.5h.01'/%3E%3C/svg%3E");
  background: var(--color-danger-bg);
  color: var(--color-danger-text);
  border-left-color: var(--color-danger-text);
}

/* ============================ 步骤卡（案例页四步落地） ============================ */
.step-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--gutter);
}
.step-card { position: relative; }
.step-card .step-no {
  font-family: var(--font-num);
  font-size: 32px;
  font-weight: 700;
  color: var(--color-primary-100);
  -webkit-text-stroke: 1px var(--color-primary-600);
  line-height: 1;
  margin-bottom: var(--space-3);
}
.step-card::after {
  content: "→";
  position: absolute;
  right: -18px;
  top: 40px;
  color: var(--color-primary-600);
  font-weight: 700;
}
.step-card:last-child::after { display: none; }
@media (max-width: 1023px) {
  .step-grid { grid-template-columns: repeat(2, 1fr); }
  .step-card::after { display: none; }
}
@media (max-width: 639px) { .step-grid { grid-template-columns: 1fr; } }

/* ============================ 场景列表（案例页更多场景） ============================ */
.scene-list { list-style: none; padding: 0; margin: 0; display: grid; gap: var(--space-4); }
.scene-list li {
  border-left: 3px solid var(--color-primary-600);
  padding: var(--space-2) var(--space-4);
  margin: 0;
  background: var(--color-neutral-50);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}
.scene-list strong { color: var(--color-neutral-900); }

/* ============================ FAQ 手风琴（§5.13，案例页专用） ============================ */
.faq-item {
  border: 1px solid var(--color-neutral-200);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-3);
  background: var(--color-white);
}
.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  width: 100%;
  min-height: 56px;
  padding: 0 var(--space-6);
  border: 0;
  background: transparent;
  text-align: left;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-neutral-900);
  border-radius: var(--radius-lg);
  transition: background-color 150ms ease-out;
}
.faq-q:hover { background: var(--color-neutral-50); }
.faq-q .chevron {
  flex: none;
  width: 20px; height: 20px;
  color: var(--color-neutral-600);
  transition: transform 200ms ease-out;
}
.faq-q[aria-expanded="true"] { color: var(--color-primary-700); }
.faq-q[aria-expanded="true"] .chevron { transform: rotate(180deg); }
.faq-a {
  overflow: hidden;
  max-height: 0;
  transition: max-height 250ms ease-out;
}
.faq-a-inner {
  padding: 0 var(--space-6) 20px;
  border-top: 1px solid var(--color-neutral-200);
  margin: 0 var(--space-6);
  padding-left: 0;
  padding-right: 0;
  color: var(--color-neutral-800);
  font-size: 16px;
  line-height: 1.75;
  padding-top: var(--space-4);
}
.faq-a-inner p { margin-bottom: 0; max-width: none; }

/* ============================ 视频中心 ============================ */
.video-filter {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
  margin-bottom: var(--space-8);
}
.video-filter button {
  min-height: 44px;
  padding: 0 var(--space-4);
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-neutral-300);
  background: var(--color-white);
  font-size: 14px;
  color: var(--color-neutral-600);
}
.video-filter button[aria-pressed="true"] {
  background: var(--color-primary-600);
  border-color: var(--color-primary-600);
  color: var(--color-white);
}

.video-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gutter);
}
@media (max-width: 1023px) { .video-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 639px) { .video-grid { grid-template-columns: 1fr; } }

.video-card { padding: 0; overflow: hidden; text-align: left; width: 100%; border: 1px solid var(--color-neutral-200); background: var(--color-white); border-radius: var(--radius-lg); transition: border-color 200ms, box-shadow 200ms, transform 200ms; }
.video-card:hover { border-color: var(--color-primary-600); box-shadow: var(--shadow-card-hover); transform: translateY(-2px); }
.video-cover {
  display: block;
  position: relative;
  aspect-ratio: 16 / 9;
  background: var(--gradient-hero);
  overflow: hidden;
}
.video-cover img {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
#video-sections > section:first-child .video-card:first-child .video-cover {
  margin-top: -20px;
}
.video-play {
  position: absolute;
  left: 50%; top: 50%;
  transform: translate(-50%, -50%);
  width: 64px; height: 64px;
  border-radius: 50%;
  background: rgba(10, 61, 145, .85);
  display: grid;
  place-items: center;
  transition: transform 200ms ease-out;
}
.video-card:hover .video-play { transform: translate(-50%, -50%) scale(1.06); }
.video-play svg { width: 20px; height: 20px; fill: var(--color-white); margin-left: 3px; }
.video-duration {
  position: absolute;
  right: var(--space-3);
  bottom: var(--space-3);
  background: rgba(15, 23, 42, .72);
  color: var(--color-white);
  font-size: 13px;
  border-radius: var(--radius-sm);
  padding: 2px 8px;
  font-variant-numeric: tabular-nums;
}
.video-meta { display: block; padding: var(--space-4) var(--space-6) var(--space-6); }
.video-meta .video-cat {
  font-size: 13px;
  color: var(--color-cyan-700);
  font-weight: 500;
  margin-bottom: var(--space-1);
  display: block;
}
.video-meta h2, .video-meta h3 { font-size: 16px; margin-bottom: var(--space-2); }
.video-meta p {
  font-size: 14px;
  color: var(--color-neutral-600);
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* 视频弹层（§5.10） */
.video-modal {
  position: fixed;
  inset: 0;
  z-index: 180;
  background: rgba(10, 30, 60, .9);
  display: none;
  align-items: center;
  justify-content: center;
  padding: var(--space-6);
}
.video-modal.is-open { display: flex; }
.video-modal-inner { width: min(960px, 100%); }
.video-modal video {
  width: 100%;
  border-radius: var(--radius-lg);
  background: var(--color-black);
  aspect-ratio: 16 / 9;
}
.video-modal-foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
  margin-top: var(--space-4);
  color: var(--color-neutral-300);
  font-size: 14px;
}
.video-modal-close {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  width: 44px; height: 44px;
  border: 0; border-radius: 50%;
  background: rgba(255, 255, 255, .12);
  color: var(--color-white);
  font-size: 24px;
}

/* 空态（§5.6 空态规范） */
.empty-state {
  text-align: center;
  padding: var(--space-24) var(--space-6);
  color: var(--color-neutral-500);
}
.empty-state svg {
  width: 96px; height: 96px;
  color: var(--color-neutral-300);
  margin: 0 auto var(--space-6);
}

/* ============================ 表单（§5.5） ============================ */
/* 联系页转化双栏区：左 7 列 / 右 5 列（design-spec §7.6） */
.contact-layout {
  display: grid;
  grid-template-columns: 7fr 5fr;
  gap: var(--gutter);
  align-items: start;
}
@media (max-width: 1023px) { .contact-layout { grid-template-columns: 1fr; gap: var(--space-4); } }

/* 右栏三小卡（次级卡片：细边框、无阴影，间距 16px） */
.side-cards { display: grid; gap: var(--space-4); }
.side-cards .card { padding: var(--space-6); }
.side-cards h2, .side-cards h3 { font-size: 16px; margin-bottom: var(--space-3); }
.side-cards p { font-size: 14px; color: var(--color-neutral-600); margin-bottom: var(--space-2); }
.side-cards p:last-child { margin-bottom: 0; }

/* 品质溯源流程条（平台页④，4 步横向） */
.flow-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-3);
  margin-top: var(--space-8);
}
.flow-steps .flow-step {
  position: relative;
  background: var(--color-white);
  border: 1px solid var(--color-neutral-200);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary-700);
  text-align: center;
}
.flow-steps .flow-step:not(:last-child)::after {
  content: "→";
  position: absolute;
  right: -13px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-primary-600);
  z-index: 1;
}
@media (max-width: 639px) {
  .flow-steps { grid-template-columns: repeat(2, 1fr); }
  .flow-steps .flow-step::after { display: none; }
}

.form-card { padding: var(--space-8); }
@media (max-width: 639px) { .form-card { padding: var(--space-6) var(--space-4); } }

.form-field { margin-bottom: var(--space-6); }
.form-field label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-neutral-800);
  margin-bottom: var(--space-2);
}
.form-field .req { color: var(--color-danger-text); margin-left: 2px; }
.form-field input,
.form-field select,
.form-field textarea {
  width: 100%;
  min-height: 48px;
  border: 1px solid var(--color-neutral-300);
  border-radius: var(--radius-md);
  padding: 0 var(--space-4);
  font-size: 16px;
  font-family: inherit;
  color: var(--color-neutral-800);
  background: var(--color-white);
}
.form-field textarea { padding: var(--space-3) var(--space-4); min-height: 120px; resize: vertical; }
.form-field input::placeholder,
.form-field textarea::placeholder { color: var(--color-neutral-400); }
.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  outline: none;
  border-color: var(--color-primary-600);
  box-shadow: 0 0 0 3px rgba(20, 86, 196, .15);
}
.form-field input:hover,
.form-field select:hover,
.form-field textarea:hover { border-color: var(--color-primary-300); }
.form-field select {
  appearance: none;
  padding-right: 44px;
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 16 16' fill='none' stroke='%23212121' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M4 6l4 4 4-4'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
}
.form-field select.is-placeholder { color: var(--color-neutral-400); }
.form-field select option { color: var(--color-neutral-800); background: var(--color-white); }
.form-field select:focus {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 16 16' fill='none' stroke='%231456C4' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M4 6l4 4 4-4'/%3E%3C/svg%3E");
}
.form-field select:focus:hover { border-color: var(--color-primary-600); }
.form-field.has-error input,
.form-field.has-error select,
.form-field.has-error textarea { border-color: var(--color-danger-text); }
.field-error {
  display: none;
  margin-top: 6px;
  font-size: 13px;
  color: var(--color-danger-text);
  align-items: center;
  gap: 6px;
}
.field-error::before {
  content: "";
  width: 14px; height: 14px;
  flex: none;
  background: currentColor;
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2'%3E%3Ccircle cx='12' cy='12' r='9'/%3E%3Cpath d='M12 7v6M12 16.5h.01'/%3E%3C/svg%3E") center / contain no-repeat;
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2'%3E%3Ccircle cx='12' cy='12' r='9'/%3E%3Cpath d='M12 7v6M12 16.5h.01'/%3E%3C/svg%3E") center / contain no-repeat;
}
.form-field.has-error .field-error { display: flex; }

.form-summary { margin-bottom: var(--space-6); }
.form-privacy { font-size: 13px; color: var(--color-neutral-500); margin-top: var(--space-4); margin-bottom: 0; }
.char-count { font-size: 13px; color: var(--color-neutral-400); text-align: right; margin-top: var(--space-1); }

/* 提交按钮：/contact/ 转化页全端全宽（design-spec v1.2.1 §5.5 例外条款） */
.form-submit { width: 100%; }

/* 成功态卡片 */
.form-success { text-align: center; padding: var(--space-12) var(--space-6); }
.form-success .success-icon {
  width: 56px; height: 56px;
  margin: 0 auto var(--space-6);
  color: var(--color-green-600);
}
.form-success h2, .form-success h3 { margin-bottom: var(--space-3); }

/* 兜底降级块 */
.form-fallback { margin-top: var(--space-6); }

/* 联系侧栏 */
.contact-side .side-block { margin-bottom: var(--space-8); }
.contact-side h2, .contact-side h3 { font-size: 18px; margin-bottom: var(--space-3); }
.contact-side p { font-size: 15px; color: var(--color-neutral-600); }
.contact-phone-big {
  font-size: 24px;
  font-weight: 700;
  color: var(--color-primary-700) !important;
  font-family: var(--font-num);
  text-decoration: none !important;
}
/* 双二维码并排（浮条弹层 + 联系页卡C） */
.qr-pair {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
  margin: var(--space-4) 0;
}
.qr-pair figure { margin: 0; text-align: center; }
.qr-pair img {
  width: 140px;
  height: 140px;
  object-fit: contain;
  border: 1px solid var(--color-neutral-200);
  border-radius: var(--radius-md);
  background: var(--color-white);
}
.qr-pair figcaption { font-size: 13px; color: var(--color-neutral-600); margin-top: var(--space-2); }

.qr-placeholder {
  width: 160px; height: 160px;
  border: 2px dashed var(--color-neutral-300);
  border-radius: var(--radius-md);
  display: grid;
  place-items: center;
  text-align: center;
  font-size: 13px;
  color: var(--color-neutral-400);
  padding: var(--space-3);
}

/* 微信二维码弹层（浮条用） */
.qr-modal {
  position: fixed;
  inset: 0;
  z-index: 180;
  background: rgba(10, 30, 60, .9);
  display: none;
  align-items: center;
  justify-content: center;
  padding: var(--space-6);
}
.qr-modal.is-open { display: flex; }
.qr-modal-inner {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  text-align: center;
  max-width: 380px;
  width: 100%;
}
.qr-modal-inner .qr-placeholder { margin: var(--space-4) auto; }
.qr-modal-close {
  width: 44px; height: 44px;
  border: 0; border-radius: 50%;
  background: var(--color-neutral-100);
  color: var(--color-neutral-800);
  font-size: 22px;
  margin-top: var(--space-4);
}

/* ============================ 关于我们 ============================ */
/* 数字墙（深海军蓝岛，复用 §5.8）：一行五列，移动 2+2+1 */
.stats-wall {
  background: var(--color-navy-900);
  border-radius: var(--radius-xl);
  padding: var(--space-16);
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--gutter);
}
.stats-wall .stat { text-align: center; }
.stats-wall .stat strong {
  display: block;
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 40px;
  font-weight: 700;
  line-height: 1.15;
  background: var(--gradient-tech);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
@supports not (background-clip: text) {
  .stats-wall .stat strong { color: var(--color-cyan-300); }
}
.stats-wall .stat span { font-size: 14px; color: var(--color-neutral-300); }
@media (max-width: 1023px) {
  .stats-wall { padding: var(--space-8); grid-template-columns: repeat(2, 1fr); }
  .stats-wall .stat:last-child { grid-column: 1 / -1; } /* 2+2+1 */
  .stats-wall .stat strong { font-size: 32px; }
}

/* 资质名录（证书扫描件到位前的纯文本名录，禁用徽章样式伪造） */
.cert-list { columns: 2; column-gap: var(--gutter); list-style: none; padding: 0; margin: 0; }
.cert-list li {
  break-inside: avoid;
  margin-bottom: var(--space-3);
  padding-left: var(--space-4);
  border-left: 3px solid var(--color-primary-100);
  color: var(--color-neutral-800);
  font-size: 15px;
}
@media (max-width: 639px) { .cert-list { columns: 1; } }

.domain-tags { display: flex; flex-wrap: wrap; gap: var(--space-2); }
.domain-tags .pill { font-size: 14px; }

.contact-strip {
  background: var(--color-primary-50);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  flex-wrap: wrap;
}
.contact-strip p { margin: 0; color: var(--color-neutral-800); }

/* ============================ 案例页短 Hero ============================ */
.case-hero {
  background: var(--color-navy-900);
  color: var(--color-white);
  padding-block: var(--space-16);
}
.case-hero h1 { color: var(--color-white); max-width: 860px; }
.case-hero .case-metrics {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-6) var(--space-12);
  margin-top: var(--space-8);
  border-top: 1px solid rgba(255, 255, 255, .18);
  padding-top: var(--space-6);
}
.case-hero .case-metrics div strong {
  display: block;
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 28px;
  color: var(--color-cyan-300);
}
.case-hero .case-metrics div span { font-size: 14px; color: var(--color-neutral-300); }

/* 荣誉列表 */
.honor-list { list-style: none; padding: 0; margin: 0; display: grid; gap: var(--space-4); }
.honor-list li {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
  margin: 0;
  background: var(--color-white);
  border: 1px solid var(--color-neutral-200);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
}
.honor-list .honor-icon {
  flex: none;
  width: 40px; height: 40px;
  color: var(--color-green-600);
}
.honor-list strong { color: var(--color-neutral-900); }
.honor-list p { margin: var(--space-1) 0 0; font-size: 15px; color: var(--color-neutral-600); }

/* 隐私政策正文 */
.prose h2 { font-size: 22px; margin-top: var(--space-12); }
.prose p { max-width: none; }

/* ============================ 首页案例速览左右布局 ============================ */
.split-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: center;
}
@media (max-width: 1023px) { .split-2 { grid-template-columns: 1fr; gap: var(--space-8); } }

/* ============================ 滚动入场与卡片微交互 ============================ */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 500ms ease-out, transform 500ms ease-out;
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal.is-visible:nth-child(1) { transition-delay: 0ms; }
.reveal.is-visible:nth-child(2) { transition-delay: 70ms; }
.reveal.is-visible:nth-child(3) { transition-delay: 140ms; }
.reveal.is-visible:nth-child(4) { transition-delay: 210ms; }
.reveal.is-visible:nth-child(5) { transition-delay: 280ms; }
.reveal.is-visible:nth-child(n+6) { transition-delay: 350ms; }
.card,
.photo-card {
  transition: border-color 220ms ease-out, box-shadow 220ms ease-out, transform 220ms ease-out;
}
.card:hover,
.photo-card:hover {
  transform: translateY(-4px);
}
.card:hover {
  border-color: var(--color-primary-100);
  box-shadow: var(--shadow-card);
}
.photo-card:hover {
  border-color: var(--color-primary-100);
}
.card-icon {
  transition: color 220ms ease-out, transform 220ms ease-out;
}
.card:hover .card-icon {
  color: var(--color-primary-700);
  transform: translateY(-2px);
}
@media (prefers-reduced-motion: reduce) {
  .hero::after { display: none; }
  .hero .container > * { animation: none; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .main-nav a::after { transition: none; }
}

/* ============================ 平台页：调度指挥台 ============================ */
.platform-hero {
  position: relative;
  overflow: hidden;
  color: var(--color-white);
  padding: 56px 0 72px;
  background: #071428;
}
.platform-hero .hero-bg { object-position: 78% 32%; }
.platform-hero::before {
  content: "";
  position: absolute;
  inset: -56px;
  z-index: 2;
  background-image:
    linear-gradient(rgba(103, 232, 249, .08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(103, 232, 249, .08) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse at 70% 28%, #000 10%, transparent 72%);
  animation: platform-grid-drift 18s linear infinite;
  pointer-events: none;
}
.platform-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(180deg, rgba(7, 20, 40, .18) 0%, rgba(7, 20, 40, 0) 42%, rgba(7, 20, 40, .55) 100%),
    linear-gradient(90deg, rgba(7, 20, 40, .78) 0%, rgba(7, 20, 40, .4) 40%, rgba(7, 20, 40, .08) 72%);
  pointer-events: none;
}
.platform-hero .container { position: relative; z-index: 3; }
.platform-hero-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(280px, .85fr);
  gap: var(--space-12);
  align-items: center;
}
.platform-hero-copy > * {
  animation: hero-enter 640ms ease-out backwards;
}
.platform-hero-copy > *:nth-child(1) { animation-delay: 40ms; }
.platform-hero-copy > *:nth-child(2) { animation-delay: 110ms; }
.platform-hero-copy > *:nth-child(3) { animation-delay: 180ms; }
.platform-hero-copy > *:nth-child(4) { animation-delay: 250ms; }
.platform-hero-copy > *:nth-child(5) { animation-delay: 320ms; }
.platform-hero-copy > *:nth-child(6) { animation-delay: 390ms; }
.platform-hero .breadcrumb,
.platform-hero .breadcrumb a { color: rgba(226, 232, 240, .72); }
.platform-hero .breadcrumb { padding-top: 0; }
.platform-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: var(--space-6) 0 var(--space-4);
  color: var(--color-cyan-300);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .08em;
}
.platform-kicker::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-cyan-300);
  box-shadow: 0 0 0 6px rgba(103, 232, 249, .16);
  animation: platform-pulse 2.4s ease-out infinite;
}
.platform-hero h1 {
  max-width: 680px;
  margin-bottom: var(--space-4);
  color: var(--color-white);
  font-size: 44px;
}
.platform-hero .section-lead {
  max-width: 600px;
  margin-bottom: var(--space-6);
  color: rgba(226, 232, 240, .86);
}
.platform-pipeline {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: var(--space-8);
}
.platform-pipeline span {
  position: relative;
  padding: 6px 14px 6px 28px;
  border: 1px solid rgba(103, 232, 249, .35);
  border-radius: var(--radius-pill);
  background: rgba(7, 20, 40, .35);
  color: var(--color-white);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .12em;
  animation: platform-chip 3.6s ease-in-out infinite;
}
.platform-pipeline span::before {
  content: "";
  position: absolute;
  left: 12px;
  top: 50%;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-cyan-300);
  transform: translateY(-50%);
}
.platform-pipeline span:nth-child(2) { animation-delay: .45s; }
.platform-pipeline span:nth-child(3) { animation-delay: .9s; }
.platform-pipeline span:nth-child(4) { animation-delay: 1.35s; }
.platform-hero-actions { display: flex; flex-wrap: wrap; gap: var(--space-4); }

.platform-console {
  position: relative;
  height: 420px;
  border: 1px solid rgba(103, 232, 249, .28);
  border-radius: 28px;
  background:
    radial-gradient(circle at 50% 50%, rgba(6, 182, 212, .16), transparent 46%),
    rgba(7, 20, 40, .48);
  box-shadow: inset 0 0 80px rgba(6, 182, 212, .08), 0 28px 70px rgba(0, 0, 0, .28);
  overflow: hidden;
  animation: hero-enter 800ms ease-out 180ms backwards;
}
.console-ring,
.console-orbit,
.console-core,
.console-scan { position: absolute; }
.console-ring {
  inset: 54px;
  border: 1px dashed rgba(103, 232, 249, .5);
  border-radius: 50%;
  animation: platform-spin 36s linear infinite;
}
.console-ring-inner {
  inset: 108px;
  border-style: solid;
  border-color: rgba(255, 255, 255, .14);
  animation-duration: 22s;
  animation-direction: reverse;
}
.console-scan {
  left: 10%;
  right: 10%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-cyan-300), transparent);
  box-shadow: 0 0 18px var(--color-cyan-300);
  animation: platform-scan 4.8s ease-in-out infinite;
}
.console-core {
  left: 50%;
  top: 50%;
  width: 128px;
  height: 128px;
  display: grid;
  place-content: center;
  text-align: center;
  border: 1px solid rgba(103, 232, 249, .65);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(20, 86, 196, .95), rgba(7, 20, 40, .96) 72%);
  box-shadow: 0 0 36px rgba(6, 182, 212, .35);
  transform: translate(-50%, -50%);
}
.console-core strong {
  color: var(--color-white);
  font-size: 22px;
  letter-spacing: .12em;
  padding-left: .12em;
}
.console-core span {
  display: block;
  max-width: 96px;
  color: var(--color-cyan-300);
  font-size: 12px;
  line-height: 1.35;
}
.console-orbit {
  inset: 54px;
  animation: platform-spin 28s linear infinite;
}
.console-orbit span {
  position: absolute;
  top: 0;
  left: 50%;
  width: 0;
  height: 0;
  animation: platform-spin 28s linear infinite reverse;
}
.console-orbit b {
  position: absolute;
  left: 0;
  top: 0;
  min-width: 64px;
  padding: 6px 12px;
  border: 1px solid rgba(103, 232, 249, .6);
  border-radius: var(--radius-pill);
  background: rgba(7, 20, 40, .86);
  color: var(--color-white);
  font-size: 13px;
  font-style: normal;
  font-weight: 600;
  letter-spacing: .12em;
  text-align: center;
  transform: translate(-50%, -50%);
  box-shadow: 0 0 18px rgba(6, 182, 212, .18);
}
.console-orbit.o2,
.console-orbit.o2 span { animation-delay: -7s; }
.console-orbit.o3,
.console-orbit.o3 span { animation-delay: -14s; }
.console-orbit.o4,
.console-orbit.o4 span { animation-delay: -21s; }

.platform-hero .tier-grid { margin-top: 64px; counter-reset: tier; }
.platform-hero .tier-grid .card {
  position: relative;
  counter-increment: tier;
  background: rgba(255, 255, 255, .07);
  border-color: rgba(103, 232, 249, .24);
  box-shadow: none;
  backdrop-filter: blur(10px);
}
.platform-hero .tier-grid .card::after {
  content: counter(tier, decimal-leading-zero);
  position: absolute;
  top: 20px;
  right: 22px;
  color: rgba(103, 232, 249, .7);
  font-family: var(--font-num);
  font-size: 13px;
  letter-spacing: .14em;
}
.platform-hero .tier-grid .card h3 { color: var(--color-white); }
.platform-hero .tier-grid .card p { color: rgba(241, 245, 249, .9); }
.platform-hero .tier-level { color: var(--color-cyan-300); }
.platform-hero .card:hover {
  border-color: rgba(103, 232, 249, .7);
  box-shadow: 0 18px 40px rgba(0, 0, 0, .28);
}
.platform-system-note {
  max-width: 860px;
  margin: var(--space-6) 0 0;
  color: rgba(226, 232, 240, .84);
}
.platform-hero .alert-info {
  margin-top: var(--space-8);
  background: rgba(255, 255, 255, .94);
}
.platform-hero .alert-info > div { flex: 1; min-width: 0; }

.platform-page .sub-nav {
  background: rgba(7, 20, 40, .92);
  border-bottom-color: rgba(103, 232, 249, .22);
}
.platform-page .sub-nav a {
  gap: 8px;
  color: rgba(226, 232, 240, .72);
}
.platform-page .sub-nav a span {
  color: var(--color-cyan-300);
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: .08em;
}
.platform-page .sub-nav a.is-active,
.platform-page .sub-nav a:hover {
  color: var(--color-white);
  background: linear-gradient(180deg, transparent, rgba(6, 182, 212, .16));
}
.platform-page .sub-nav a.is-active { border-bottom-color: var(--color-cyan-300); }

.platform-page .module-section { position: relative; }
.platform-page .module-section::before {
  content: attr(data-index);
  position: absolute;
  top: 18px;
  right: max(24px, calc((100% - var(--container-max)) / 2));
  color: transparent;
  font-family: var(--font-num);
  font-size: 128px;
  font-weight: 700;
  line-height: .8;
  -webkit-text-stroke: 1px rgba(20, 86, 196, .18);
  pointer-events: none;
}
.platform-page .module-section:has(.is-flipped)::before {
  right: auto;
  left: max(24px, calc((100% - var(--container-max)) / 2));
}
.platform-page .section-alt.module-section {
  background-image:
    linear-gradient(rgba(10, 61, 145, .045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(10, 61, 145, .045) 1px, transparent 1px);
  background-size: 28px 28px;
  background-color: var(--color-neutral-50);
}
.platform-page .module-split { position: relative; align-items: center; }
.platform-page .pill {
  border: 1px solid rgba(20, 86, 196, .16);
  background: linear-gradient(90deg, var(--color-primary-100), rgba(103, 232, 249, .28));
}
.platform-page .module-section h2 { letter-spacing: .02em; }
.platform-page .feature-list li::before {
  top: 8px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  box-shadow: 0 0 0 4px rgba(6, 182, 212, .14);
}
.platform-page .reveal.is-visible .feature-list li {
  animation: hero-enter 480ms ease-out backwards;
}
.platform-page .reveal.is-visible .feature-list li:nth-child(1) { animation-delay: 60ms; }
.platform-page .reveal.is-visible .feature-list li:nth-child(2) { animation-delay: 120ms; }
.platform-page .reveal.is-visible .feature-list li:nth-child(3) { animation-delay: 180ms; }
.platform-page .reveal.is-visible .feature-list li:nth-child(4) { animation-delay: 240ms; }
.platform-page .reveal.is-visible .feature-list li:nth-child(5) { animation-delay: 300ms; }
.platform-page .value-line {
  background: linear-gradient(90deg, rgba(10, 61, 145, .08), rgba(6, 182, 212, .08));
  border-left-color: var(--color-cyan-700);
}
.tech-frame {
  position: relative;
  background: #071428;
  border-color: rgba(103, 232, 249, .32);
  box-shadow: 0 24px 54px rgba(10, 30, 60, .16);
  padding: 16px 16px 0;
}
.tech-frame .photo-frame {
  position: relative;
  border: 1px solid rgba(255, 255, 255, .08);
  border-radius: var(--radius-md);
}
.tech-frame figcaption { color: rgba(241, 245, 249, .9); }
.tech-frame::before,
.tech-frame::after,
.hud-corner {
  position: absolute;
  width: 16px;
  height: 16px;
  border: 2px solid var(--color-cyan-300);
  pointer-events: none;
  z-index: 2;
}
.tech-frame::before { top: 8px; left: 8px; border-right: 0; border-bottom: 0; }
.tech-frame::after { top: 8px; right: 8px; border-left: 0; border-bottom: 0; }
.hud-bl { left: 8px; bottom: 8px; border-top: 0; border-right: 0; }
.hud-br { right: 8px; bottom: 8px; border-top: 0; border-left: 0; }
.tech-frame:hover {
  border-color: rgba(103, 232, 249, .7);
  box-shadow: 0 28px 60px rgba(10, 61, 145, .22);
}
.platform-page .flow-steps .flow-step {
  background: #071428;
  border-color: rgba(103, 232, 249, .35);
  color: var(--color-white);
  overflow: hidden;
}
.platform-page .flow-steps .flow-step::before {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 2px;
  background: var(--gradient-tech);
  transform: scaleX(0);
  transform-origin: left center;
  animation: platform-fill 2.8s ease-in-out infinite;
}
.platform-page .flow-steps .flow-step:nth-child(2)::before { animation-delay: .35s; }
.platform-page .flow-steps .flow-step:nth-child(3)::before { animation-delay: .7s; }
.platform-page .flow-steps .flow-step:nth-child(4)::before { animation-delay: 1.05s; }
.platform-page .flow-steps .flow-step:not(:last-child)::after { color: var(--color-cyan-700); }

.platform-page .tech-spec { grid-template-columns: 1fr; }
.platform-page .tech-spec .spec-item {
  position: relative;
  isolation: isolate;
  min-height: 280px;
  display: grid;
  place-content: center;
  overflow: hidden;
  text-align: center;
  background:
    radial-gradient(circle at 50% 45%, rgba(6, 182, 212, .18), transparent 42%),
    #071428;
  border-color: rgba(103, 232, 249, .35);
}
.platform-page .tech-spec .spec-item strong {
  position: relative;
  color: var(--color-cyan-300);
  font-size: 64px;
}
.platform-page .tech-spec .spec-item span {
  position: relative;
  color: rgba(226, 232, 240, .8);
  font-size: 15px;
}
.platform-page .spec-orbit {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 210px;
  height: 210px;
  margin: -105px 0 0 -105px;
  border: 1px dashed rgba(103, 232, 249, .45);
  border-radius: 50%;
  animation: platform-spin 16s linear infinite;
}
.platform-page .spec-orbit::after {
  content: "";
  position: absolute;
  top: -4px;
  left: 50%;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-cyan-300);
  box-shadow: 0 0 12px var(--color-cyan-300);
}

.platform-versus {
  position: relative;
  overflow: hidden;
  scroll-margin-top: calc(var(--nav-h-desktop) + 56px);
  background:
    radial-gradient(680px 260px at 50% 0%, rgba(6, 182, 212, .2), transparent 70%),
    #071428;
}
.platform-versus::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(103, 232, 249, .05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(103, 232, 249, .05) 1px, transparent 1px);
  background-size: 42px 42px;
  pointer-events: none;
}
.platform-versus .container { position: relative; }
.platform-page .versus .vs-side {
  padding: 28px 16px;
  border: 1px solid rgba(255, 255, 255, .08);
  border-radius: var(--radius-xl);
  background: rgba(255, 255, 255, .03);
}
.platform-page .versus .vs-new {
  border-color: rgba(103, 232, 249, .45);
  box-shadow: inset 0 0 48px rgba(6, 182, 212, .1), 0 0 32px rgba(6, 182, 212, .12);
}
.platform-page .versus .vs-mark {
  width: 92px;
  height: 92px;
  display: grid;
  place-content: center;
  border: 1px solid rgba(103, 232, 249, .4);
  border-radius: 50%;
  background: rgba(6, 182, 212, .08);
  line-height: 1.15;
}
.platform-versus .data-table {
  box-shadow: 0 18px 40px rgba(0, 0, 0, .18);
}

.platform-novelty {
  padding-top: 72px;
  background:
    radial-gradient(520px 180px at 50% 0%, rgba(6, 182, 212, .12), transparent 70%),
    var(--color-white);
}
.platform-novelty .card {
  position: relative;
  overflow: hidden;
}
.platform-novelty .card::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 3px;
  background: var(--gradient-tech);
}
.platform-page .cta-band,
.cases-page .cta-band {
  position: relative;
  overflow: hidden;
}
.platform-page .cta-band::before,
.cases-page .cta-band::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, .05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .05) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: linear-gradient(90deg, transparent, #000 30%, #000 70%, transparent);
  pointer-events: none;
}
.platform-page .cta-band .container,
.cases-page .cta-band .container { position: relative; }

@keyframes platform-grid-drift {
  to { transform: translate3d(-56px, -56px, 0); }
}
@keyframes platform-spin {
  to { transform: rotate(360deg); }
}
@keyframes platform-scan {
  0% { top: 14%; opacity: 0; }
  12% { opacity: 1; }
  88% { opacity: .85; }
  100% { top: 86%; opacity: 0; }
}
@keyframes platform-pulse {
  0% { box-shadow: 0 0 0 0 rgba(103, 232, 249, .35); }
  100% { box-shadow: 0 0 0 12px rgba(103, 232, 249, 0); }
}
@keyframes platform-chip {
  0%, 100% { border-color: rgba(103, 232, 249, .28); }
  35% { border-color: rgba(103, 232, 249, .95); box-shadow: 0 0 16px rgba(6, 182, 212, .28); }
}
@keyframes platform-fill {
  0%, 100% { transform: scaleX(0); }
  45%, 70% { transform: scaleX(1); }
}

@media (max-width: 1023px) {
  .platform-hero { padding: 36px 0 48px; }
  .platform-hero .hero-bg { object-position: 72% 22%; }
  .platform-hero::after {
    background: linear-gradient(180deg, rgba(7, 20, 40, .68) 0%, rgba(7, 20, 40, .46) 42%, rgba(7, 20, 40, .7) 100%);
  }
  .platform-hero-layout { grid-template-columns: 1fr; }
  .platform-hero h1 { font-size: 32px; }
  .platform-console { height: 320px; }
  .console-ring { inset: 36px; }
  .console-ring-inner,
  .console-orbit { inset: 72px; }
  .console-core { width: 104px; height: 104px; }
  .platform-page .module-section::before { display: none; }
  .platform-versus { scroll-margin-top: calc(var(--nav-h-mobile) + 52px); }
  .platform-page .tech-spec .spec-item { min-height: 220px; }
  .platform-page .tech-spec .spec-item strong { font-size: 48px; }
}
@media (prefers-reduced-motion: reduce) {
  .platform-hero::before,
  .platform-kicker::before,
  .platform-pipeline span,
  .platform-console,
  .console-ring,
  .console-orbit,
  .console-orbit span,
  .console-scan,
  .spec-orbit,
  .platform-page .flow-steps .flow-step::before,
  .platform-hero-copy > * {
    animation: none;
  }
}

/* ============================ 案例页：实测档案 ============================ */
.cases-page .case-hero {
  position: relative;
  overflow: hidden;
  padding-block: 72px 64px;
  background: #071428;
}
.cases-page .case-hero .hero-bg { object-position: right center; }
.cases-page .case-hero::before {
  content: "";
  position: absolute;
  inset: -48px;
  z-index: 2;
  background-image:
    linear-gradient(rgba(103, 232, 249, .08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(103, 232, 249, .08) 1px, transparent 1px);
  background-size: 52px 52px;
  mask-image: radial-gradient(ellipse at 75% 30%, #000 8%, transparent 70%);
  animation: platform-grid-drift 18s linear infinite;
  pointer-events: none;
}
.cases-page .case-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(90deg, rgba(7, 20, 40, .8) 0%, rgba(7, 20, 40, .38) 46%, rgba(7, 20, 40, .18) 100%);
  pointer-events: none;
}
.cases-page .case-hero .container { position: relative; z-index: 3; }
.case-hero-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(260px, .65fr);
  gap: var(--space-12);
  align-items: end;
}
.case-hero-copy > * { animation: hero-enter 640ms ease-out backwards; }
.case-hero-copy > *:nth-child(1) { animation-delay: 40ms; }
.case-hero-copy > *:nth-child(2) { animation-delay: 120ms; }
.case-hero-copy > *:nth-child(3) { animation-delay: 200ms; }
.case-hero-copy > *:nth-child(4) { animation-delay: 280ms; }
.cases-page .case-hero .breadcrumb,
.cases-page .case-hero .breadcrumb a { color: rgba(226, 232, 240, .74); }
.cases-page .case-hero .breadcrumb { padding-top: 0; }
.case-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: var(--space-6) 0 var(--space-4);
  color: var(--color-cyan-300);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .08em;
}
.case-kicker::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-cyan-300);
  box-shadow: 0 0 0 6px rgba(103, 232, 249, .16);
  animation: platform-pulse 2.4s ease-out infinite;
}
.cases-page .case-hero h1 {
  max-width: 740px;
  margin-bottom: var(--space-8);
  font-size: 40px;
}
.cases-page .case-hero .num-gradient { font-size: 1.05em; }
.case-hero-actions { display: flex; flex-wrap: wrap; gap: var(--space-4); }
.cases-page .case-metrics {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin: 0;
  padding: 0;
  border: 0;
}
.cases-page .case-metrics div {
  padding: 18px 16px 16px;
  border: 1px solid rgba(103, 232, 249, .28);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, .06);
  backdrop-filter: blur(10px);
  transition: border-color 220ms ease-out, transform 220ms ease-out, box-shadow 220ms ease-out;
}
.cases-page .case-metrics div:hover {
  border-color: rgba(103, 232, 249, .75);
  box-shadow: 0 14px 32px rgba(0, 0, 0, .22);
  transform: translateY(-4px);
}
.cases-page .case-metrics div strong { font-size: 32px; }

.cases-page .case-brief {
  background:
    radial-gradient(520px 180px at 50% 0%, rgba(6, 182, 212, .1), transparent 72%),
    var(--color-white);
}
.cases-page .case-dossier {
  position: relative;
  padding: 36px 40px 32px 36px;
  border: 1px solid var(--color-neutral-200);
  border-radius: 20px;
  background: rgba(255, 255, 255, .92);
  box-shadow: 0 18px 44px rgba(15, 23, 42, .05);
}
.cases-page .case-dossier::before {
  content: "";
  position: absolute;
  top: 28px;
  bottom: 28px;
  left: 0;
  width: 3px;
  border-radius: 3px;
  background: var(--gradient-tech);
}
.cases-page .case-dossier .section-title { margin-bottom: var(--space-4); }
.cases-page .case-dossier p { margin-bottom: 0; }

.cases-page .case-method {
  background-image:
    linear-gradient(rgba(10, 61, 145, .045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(10, 61, 145, .045) 1px, transparent 1px);
  background-size: 28px 28px;
  background-color: var(--color-neutral-50);
}
.cases-page .step-card { overflow: hidden; }
.cases-page .step-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-tech);
  transform: scaleX(0);
  transform-origin: left center;
  animation: platform-fill 2.8s ease-in-out infinite;
}
.cases-page .step-card:nth-child(2)::before { animation-delay: .35s; }
.cases-page .step-card:nth-child(3)::before { animation-delay: .7s; }
.cases-page .step-card:nth-child(4)::before { animation-delay: 1.05s; }
.cases-page .case-shots { margin-top: 56px; }

.cases-page .case-results {
  position: relative;
  overflow: hidden;
  scroll-margin-top: calc(var(--nav-h-desktop) + 16px);
  color: var(--color-white);
  background:
    radial-gradient(640px 220px at 50% 0%, rgba(6, 182, 212, .18), transparent 70%),
    #071428;
}
.cases-page .case-results::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(103, 232, 249, .05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(103, 232, 249, .05) 1px, transparent 1px);
  background-size: 42px 42px;
  pointer-events: none;
}
.cases-page .case-results .container { position: relative; }
.cases-page .case-results h2 { color: var(--color-white); text-align: center; }
.cases-page .case-results .table-hint { color: rgba(226, 232, 240, .75); text-align: center; }
.cases-page .case-results .data-table { box-shadow: 0 22px 48px rgba(0, 0, 0, .24); }

.cases-page .honor-list { grid-template-columns: repeat(3, 1fr); align-items: stretch; }
.cases-page .honor-list li {
  flex-direction: column;
  height: 100%;
  transition: border-color 220ms ease-out, box-shadow 220ms ease-out, transform 220ms ease-out;
}
.cases-page .honor-list li:hover {
  border-color: rgba(20, 86, 196, .28);
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-4px);
}
.cases-page .honor-icon {
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--color-green-50);
}
.cases-page .honor-icon svg { width: 24px; height: 24px; }

.cases-page .scene-list { grid-template-columns: repeat(3, 1fr); gap: var(--gutter); }
.cases-page .scene-list li {
  position: relative;
  display: block;
  margin: 0;
  padding: 28px 24px 24px;
  overflow: hidden;
  background: var(--color-white);
  border: 1px solid var(--color-neutral-200);
  border-left: 0;
  border-radius: var(--radius-lg);
  transition: border-color 220ms ease-out, box-shadow 220ms ease-out, transform 220ms ease-out;
}
.cases-page .scene-list li::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 3px;
  background: var(--gradient-tech);
}
.cases-page .scene-list li:hover {
  border-color: rgba(20, 86, 196, .28);
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-4px);
}
.cases-page .scene-list strong { display: block; margin-bottom: var(--space-2); }

.cases-page .case-faq .container { max-width: 880px; }
.cases-page .faq-item { transition: border-color 200ms ease-out, box-shadow 200ms ease-out; }
.cases-page .faq-item:hover { border-color: rgba(20, 86, 196, .28); }
.cases-page .faq-q[aria-expanded="true"] {
  background: linear-gradient(90deg, rgba(10, 61, 145, .07), transparent 72%);
}

@media (max-width: 1023px) {
  .cases-page .case-hero { padding-block: 40px 36px; }
  .cases-page .case-hero .hero-bg { object-position: 70% center; }
  .cases-page .case-hero::after {
    background: linear-gradient(180deg, rgba(7, 20, 40, .66) 0%, rgba(7, 20, 40, .48) 50%, rgba(7, 20, 40, .68) 100%);
  }
  .case-hero-layout { grid-template-columns: 1fr; align-items: start; }
  .cases-page .case-hero h1 { font-size: 32px; }
  .cases-page .case-dossier { padding: 28px 20px 24px 22px; }
  .cases-page .honor-list,
  .cases-page .scene-list { grid-template-columns: 1fr; }
  .cases-page .case-results { scroll-margin-top: calc(var(--nav-h-mobile) + 12px); }
}
@media (prefers-reduced-motion: reduce) {
  .cases-page .case-hero::before,
  .case-kicker::before,
  .case-hero-copy > *,
  .cases-page .step-card::before { animation: none; }
}