/* 淮安宇同智能科技 — 官网主样式 */
:root {
  --color-bg: #f0f4f8;
  --color-surface: #ffffff;
  --color-text: #0c1929;
  --color-text-muted: #5a6b7d;
  --color-primary: #0066cc;
  --color-primary-hover: #0052a3;
  --color-primary-light: #e8f2fc;
  --color-accent: #00b4d8;
  --color-dark: #061018;
  --color-dark-2: #0d2137;
  --color-border: #d8e2ec;
  --font-sans: system-ui, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 3px rgb(6 16 24 / 8%);
  --shadow-md: 0 12px 32px rgb(6 16 24 / 10%);
  --shadow-lg: 0 24px 48px rgb(6 16 24 / 14%);
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --content-max: 75rem;
  --header-h: 4.5rem;
  --transition: 0.22s ease;
}

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

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--color-text);
  background: var(--color-bg);
}

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

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--color-primary-hover);
}

.container {
  width: min(100% - 2rem, var(--content-max));
  margin-inline: auto;
}

.section {
  padding: var(--space-16) 0;
}

.section--alt {
  background: var(--color-surface);
}

.section__head {
  text-align: center;
  max-width: 40rem;
  margin: 0 auto var(--space-12);
}

.section__tag {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary);
  background: var(--color-primary-light);
  padding: 0.35rem 0.85rem;
  border-radius: 999px;
  margin-bottom: var(--space-4);
}

.section__title {
  margin: 0 0 var(--space-4);
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  color: var(--color-text);
}

.section__desc {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 1.0625rem;
}

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-h);
  background: rgb(6 16 24 / 85%);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgb(255 255 255 / 8%);
  transition: background var(--transition), box-shadow var(--transition);
}

.site-header.is-scrolled {
  background: rgb(6 16 24 / 96%);
  box-shadow: var(--shadow-sm);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: #fff;
  font-weight: 700;
  font-size: 1.25rem;
  text-decoration: none;
}

.logo:hover {
  color: #fff;
}

.logo__icon {
  width: 2.25rem;
  height: 2.25rem;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 800;
  color: #fff;
}

.logo__img {
  width: 60px;
  height: 60px;
  object-fit: contain;
  flex-shrink: 0;
  display: block;
}

@media (min-width: 992px) {
  .logo {
    font-size: 1.35rem;
  }
}

.nav {
  display: none;
  align-items: center;
  gap: 0.25rem;
}

.nav a {
  color: rgb(255 255 255 / 85%);
  font-size: 0.9375rem;
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
}

.nav a:hover,
.nav a.is-active {
  color: #fff;
  background: rgb(255 255 255 / 10%);
}

.nav-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  border: none;
  background: rgb(255 255 255 / 10%);
  border-radius: var(--radius-sm);
  cursor: pointer;
  color: #fff;
}

.nav-toggle:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.nav-toggle svg {
  width: 1.5rem;
  height: 1.5rem;
}

@media (min-width: 992px) {
  .nav {
    display: flex;
  }
  .nav-toggle {
    display: none;
  }
}

.mobile-nav {
  display: none;
  position: fixed;
  top: var(--header-h);
  left: 0;
  right: 0;
  background: var(--color-dark);
  padding: var(--space-4);
  border-bottom: 1px solid rgb(255 255 255 / 10%);
  z-index: 999;
}

.mobile-nav.is-open {
  display: block;
}

.mobile-nav a {
  display: block;
  color: #fff;
  padding: 0.85rem 1rem;
  border-radius: var(--radius-sm);
}

.mobile-nav a:hover {
  background: rgb(255 255 255 / 8%);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: 2px solid transparent;
  cursor: pointer;
  transition: background var(--transition), color var(--transition), border-color var(--transition), transform 0.15s;
  text-decoration: none;
  font-family: inherit;
}

.btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.btn--primary {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

.btn--primary:hover {
  background: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
  color: #fff;
}

.btn--outline {
  background: transparent;
  color: #fff;
  border-color: rgb(255 255 255 / 45%);
}

.btn--outline:hover {
  background: rgb(255 255 255 / 10%);
  color: #fff;
  border-color: #fff;
}

.btn--ghost {
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-color: transparent;
}

.btn--ghost:hover {
  background: #d0e6f9;
  color: var(--color-primary-hover);
}

.btn--sm {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
}

/* Hero / Banner */
.hero {
  position: relative;
  min-height: min(88vh, 780px);
  display: flex;
  align-items: center;
  padding-top: var(--header-h);
  background: var(--color-dark);
  overflow: hidden;
}

.hero__grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgb(0 102 204 / 6%) 1px, transparent 1px),
    linear-gradient(90deg, rgb(0 102 204 / 6%) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 40%, black, transparent);
}

.hero__glow {
  position: absolute;
  width: 50vw;
  height: 50vw;
  max-width: 480px;
  max-height: 480px;
  top: 15%;
  left: 50%;
  transform: translateX(-20%);
  background: radial-gradient(circle, rgb(0 180 216 / 22%), transparent 70%);
  pointer-events: none;
}

.hero .container.hero__carousel {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  width: 100%;
  flex: 1;
  justify-content: center;
  padding-bottom: var(--space-8);
}

.hero__viewport {
  position: relative;
  width: 100%;
  min-height: 22rem;
  overflow: hidden;
}

@media (min-width: 992px) {
  .hero__viewport {
    min-height: 26rem;
  }
}

.hero__track {
  position: relative;
  width: 100%;
}

.hero__slide {
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.45s ease, visibility 0.45s;
  pointer-events: none;
  z-index: 0;
}

.hero__slide.is-active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  z-index: 1;
}

.hero__controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-6);
  margin-top: var(--space-4);
  padding-bottom: var(--space-2);
}

.hero__arrow {
  flex-shrink: 0;
  width: 2.75rem;
  height: 2.75rem;
  border: 1px solid rgb(255 255 255 / 25%);
  background: rgb(255 255 255 / 8%);
  color: #fff;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition), border-color var(--transition);
}

.hero__arrow:hover {
  background: rgb(255 255 255 / 18%);
  border-color: rgb(255 255 255 / 45%);
}

.hero__arrow:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.hero__arrow svg {
  width: 1.25rem;
  height: 1.25rem;
}

.hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: var(--space-6);
  align-items: center;
  padding: var(--space-6) 0 var(--space-8);
  text-align: left;
}

@media (min-width: 768px) {
  .hero__inner {
    grid-template-columns: minmax(0, 1fr) minmax(220px, 300px);
    column-gap: var(--space-6);
  }

  .hero__inner--single {
    grid-template-columns: 1fr;
    max-width: 40rem;
    margin-inline: auto;
  }
}

/* 桌面端：左右紧凑并排，整体居中 */
@media (min-width: 992px) {
  .hero__inner {
    display: flex;
    flex-wrap: nowrap;
    align-items: center;
    justify-content: center;
    gap: 1.75rem;
    width: fit-content;
    max-width: 100%;
    margin-inline: auto;
    padding: var(--space-8) 1rem var(--space-10);
  }

  .hero__inner--single {
    display: block;
    max-width: 42rem;
  }

  .hero__main {
    flex: 0 1 auto;
    max-width: 34rem;
  }

  .hero__aside {
    flex: 0 0 19rem;
    width: 19rem;
  }

  .hero-card {
    padding: var(--space-6);
  }
}

.hero__main {
  min-width: 0;
}

.hero__aside {
  min-width: 0;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8125rem;
  color: var(--color-accent);
  background: rgb(0 180 216 / 12%);
  border: 1px solid rgb(0 180 216 / 30%);
  padding: 0.4rem 0.9rem;
  border-radius: 999px;
  margin-bottom: var(--space-6);
}

.hero__title {
  margin: 0 0 var(--space-6);
  font-size: clamp(1.75rem, 4.5vw, 2.75rem);
  font-weight: 800;
  line-height: 1.25;
  color: #fff;
}

.hero__title span {
  background: linear-gradient(90deg, #fff, var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__subtitle {
  margin: 0 0 var(--space-6);
  font-size: clamp(0.9375rem, 1.8vw, 1.1rem);
  color: rgb(255 255 255 / 75%);
  max-width: 32rem;
  line-height: 1.65;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  justify-content: flex-start;
}

.hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-6);
  justify-content: flex-start;
  margin-top: var(--space-8);
  padding-top: var(--space-6);
  border-top: 1px solid rgb(255 255 255 / 12%);
}

.hero__stat strong {
  display: block;
  font-size: 1.5rem;
  color: #fff;
  font-weight: 700;
}

.hero__stat span {
  font-size: 0.875rem;
  color: rgb(255 255 255 / 55%);
}

.hero-card {
  display: flex;
  flex-direction: column;
  gap: 0;
  background: linear-gradient(145deg, rgb(255 255 255 / 10%), rgb(255 255 255 / 4%));
  border: 1px solid rgb(255 255 255 / 14%);
  border-radius: var(--radius-md);
  padding: var(--space-5) var(--space-5);
  backdrop-filter: blur(8px);
  width: 100%;
  text-align: left;
  box-sizing: border-box;
}

.hero-card__label {
  margin: 0 0 var(--space-3);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--color-accent);
  line-height: 1.3;
}

.hero-card__title {
  margin: 0 0 var(--space-3);
  font-size: 1.0625rem;
  font-weight: 700;
  color: #fff;
  line-height: 1.35;
}

.hero-card__text {
  margin: 0;
  font-size: 0.8125rem;
  line-height: 1.6;
  color: rgb(255 255 255 / 68%);
}

.hero-card__list {
  margin: var(--space-4) 0 0;
  padding: var(--space-4) 0 0;
  border-top: 1px solid rgb(255 255 255 / 12%);
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.hero-card__list li {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  margin: 0;
  padding: 0;
  font-size: 0.8125rem;
  line-height: 1.5;
  color: rgb(255 255 255 / 78%);
}

.hero-card__list li::before {
  content: "";
  flex-shrink: 0;
  width: 6px;
  height: 6px;
  margin-top: 0.45em;
  background: var(--color-accent);
  border-radius: 50%;
}

.hero__dots {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  justify-content: center;
}

.hero__dot {
  width: 2.5rem;
  height: 4px;
  border: none;
  border-radius: 2px;
  background: rgb(255 255 255 / 25%);
  cursor: pointer;
  padding: 0;
  transition: background var(--transition), width var(--transition);
}

.hero__dot.is-active {
  background: var(--color-accent);
  width: 3rem;
}

.hero__dot:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* Services */
.services-grid {
  display: grid;
  gap: var(--space-6);
  grid-template-columns: 1fr;
}

@media (min-width: 768px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1200px) {
  .services-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.service-card {
  position: relative;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  overflow: hidden;
}

.service-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  opacity: 0;
  transition: opacity var(--transition);
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary-light);
}

.service-card:hover::before {
  opacity: 1;
}

.service-card__icon {
  width: 3rem;
  height: 3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-6);
}

.service-card__icon svg {
  width: 1.5rem;
  height: 1.5rem;
}

.service-card h3 {
  margin: 0 0 var(--space-3);
  font-size: 1.125rem;
}

.service-card p {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--color-text-muted);
}

.service-card__hover {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 0.35s ease, opacity 0.35s ease, margin 0.35s;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.service-card:hover .service-card__hover {
  max-height: 8rem;
  opacity: 1;
  margin-top: var(--space-4);
}

/* Advantages */
.advantages-grid {
  display: grid;
  gap: var(--space-6);
  grid-template-columns: repeat(2, 1fr);
}

@media (min-width: 768px) {
  .advantages-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.advantage-item {
  text-align: center;
  padding: var(--space-8) var(--space-4);
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  transition: box-shadow var(--transition);
}

.advantage-item:hover {
  box-shadow: var(--shadow-md);
}

.advantage-item__num {
  display: block;
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1.2;
}

.advantage-item__label {
  display: block;
  margin-top: var(--space-2);
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text);
}

.advantage-item__sub {
  display: block;
  margin-top: 0.25rem;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

/* Honor scroll */
.honor-scroll-wrap {
  position: relative;
  overflow: hidden;
  margin: 0 -1rem;
  padding: 0 1rem;
}

.honor-scroll-wrap::before,
.honor-scroll-wrap::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  width: 3rem;
  z-index: 2;
  pointer-events: none;
}

.honor-scroll-wrap::before {
  left: 0;
  background: linear-gradient(90deg, var(--color-bg), transparent);
}

.honor-scroll-wrap::after {
  right: 0;
  background: linear-gradient(-90deg, var(--color-bg), transparent);
}

.section--alt .honor-scroll-wrap::before {
  background: linear-gradient(90deg, var(--color-surface), transparent);
}

.section--alt .honor-scroll-wrap::after {
  background: linear-gradient(-90deg, var(--color-surface), transparent);
}

.honor-scroll {
  display: flex;
  gap: var(--space-4);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
  padding: var(--space-4) 0;
  -webkit-overflow-scrolling: touch;
}

.honor-scroll::-webkit-scrollbar {
  display: none;
}

.honor-item {
  flex: 0 0 10rem;
  scroll-snap-align: start;
  text-align: center;
}

.honor-item__thumb {
  aspect-ratio: 3/4;
  background: linear-gradient(160deg, var(--color-primary-light), #fff);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--color-primary);
  text-align: center;
  line-height: 1.35;
}

.honor-item__name {
  margin: var(--space-3) 0 0;
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.honor-types {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  justify-content: center;
  margin-bottom: var(--space-8);
}

.honor-types span {
  font-size: 0.8125rem;
  padding: 0.35rem 0.85rem;
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: 999px;
  font-weight: 500;
}

/* Cases */
.cases-grid {
  display: grid;
  gap: var(--space-8);
  grid-template-columns: 1fr;
}

@media (min-width: 768px) {
  .cases-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.case-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  transition: transform var(--transition), box-shadow var(--transition);
}

.case-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.case-card__cover {
  position: relative;
  aspect-ratio: 16/10;
  background-color: var(--color-dark-2);
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: flex-end;
  padding: var(--space-6);
}

.case-card__cover::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgb(13 40 71 / 75%) 0%, rgb(13 40 71 / 15%) 55%, transparent 100%);
  pointer-events: none;
}

.case-card__cover .case-card__tag {
  position: relative;
  z-index: 1;
}

.case-card__tag {
  font-size: 0.75rem;
  background: rgb(255 255 255 / 20%);
  color: #fff;
  padding: 0.25rem 0.6rem;
  border-radius: 999px;
}

.case-card__body {
  padding: var(--space-6);
}

.case-card h3 {
  margin: 0 0 var(--space-3);
  font-size: 1.0625rem;
}

.case-card p {
  margin: 0 0 var(--space-4);
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.case-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.case-card__meta span {
  font-size: 0.75rem;
  padding: 0.2rem 0.5rem;
  background: var(--color-bg);
  color: var(--color-text-muted);
  border-radius: var(--radius-sm);
}

/* About */
.about-grid {
  display: grid;
  gap: var(--space-12);
  align-items: center;
}

@media (min-width: 992px) {
  .about-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.about-content p {
  margin: 0 0 var(--space-4);
  color: var(--color-text-muted);
}

.about-highlights {
  display: grid;
  gap: var(--space-4);
  margin: var(--space-8) 0;
}

.about-highlight {
  display: flex;
  gap: var(--space-4);
  padding: var(--space-4);
  background: var(--color-bg);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--color-primary);
}

.about-highlight strong {
  display: block;
  font-size: 0.9375rem;
  margin-bottom: 0.15rem;
}

.about-highlight span {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.about-panel {
  background: linear-gradient(160deg, var(--color-dark-2), var(--color-primary));
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  color: #fff;
}

.about-panel h3 {
  margin: 0 0 var(--space-6);
  font-size: 1.125rem;
}

.about-panel dl {
  margin: 0;
  display: grid;
  gap: var(--space-4);
}

.about-panel dt {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: rgb(255 255 255 / 55%);
  margin-bottom: 0.15rem;
}

.about-panel dd {
  margin: 0;
  font-size: 0.9375rem;
}

/* News timeline */
.news-timeline {
  max-width: 48rem;
  margin: 0 auto;
}

.news-item {
  display: grid;
  grid-template-columns: 5.5rem 1fr;
  gap: var(--space-6);
  padding-bottom: var(--space-8);
  position: relative;
}

.news-item:not(:last-child)::before {
  content: "";
  position: absolute;
  left: 2.65rem;
  top: 1.5rem;
  bottom: 0;
  width: 2px;
  background: var(--color-border);
}

.news-item__date {
  text-align: right;
}

.news-item__date strong {
  display: block;
  font-size: 1.125rem;
  color: var(--color-primary);
}

.news-item__date span {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

.news-item__dot {
  position: absolute;
  left: 2.35rem;
  top: 0.35rem;
  width: 12px;
  height: 12px;
  background: var(--color-primary);
  border: 3px solid var(--color-surface);
  border-radius: 50%;
  box-shadow: 0 0 0 2px var(--color-primary-light);
}

.news-item__body {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  transition: box-shadow var(--transition);
}

.news-item__body:hover {
  box-shadow: var(--shadow-sm);
}

.news-item__cat {
  font-size: 0.75rem;
  color: var(--color-primary);
  font-weight: 600;
  margin-bottom: var(--space-2);
}

.news-item h3 {
  margin: 0 0 var(--space-3);
  font-size: 1.0625rem;
}

.news-item p {
  margin: 0;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* Contact + Form */
.contact-grid {
  display: grid;
  gap: var(--space-12);
}

@media (min-width: 992px) {
  .contact-grid {
    grid-template-columns: 1fr 1.1fr;
  }
}

.contact-info {
  display: grid;
  gap: var(--space-6);
}

.contact-card {
  display: flex;
  gap: var(--space-4);
  padding: var(--space-6);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.contact-card__icon {
  flex-shrink: 0;
  width: 2.5rem;
  height: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: var(--radius-sm);
}

.contact-card strong {
  display: block;
  font-size: 0.875rem;
  margin-bottom: 0.2rem;
}

.contact-card span,
.contact-card a {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
}

.feedback-form {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  box-shadow: var(--shadow-sm);
}

.feedback-form h3 {
  margin: 0 0 var(--space-6);
  font-size: 1.125rem;
}

.form-row {
  display: grid;
  gap: var(--space-4);
  margin-bottom: var(--space-4);
}

@media (min-width: 768px) {
  .form-row--2 {
    grid-template-columns: 1fr 1fr;
  }
}

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 0.35rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.7rem 0.9rem;
  font-family: inherit;
  font-size: 0.9375rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
}

.form-group textarea {
  min-height: 6rem;
  resize: vertical;
}

.form-msg {
  display: none;
  margin-top: var(--space-4);
  padding: var(--space-4);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
}

.form-msg.is-success {
  display: block;
  background: #d1fae5;
  color: #065f46;
}

.form-msg.is-error {
  display: block;
  background: #fee2e2;
  color: #991b1b;
}

/* CTA band */
.cta-band {
  background: linear-gradient(135deg, var(--color-primary), #004080);
  padding: var(--space-16) 0;
  text-align: center;
}

.cta-band h2 {
  margin: 0 0 var(--space-4);
  font-size: clamp(1.35rem, 3vw, 1.75rem);
  color: #fff;
}

.cta-band p {
  margin: 0 auto var(--space-8);
  max-width: 36rem;
  color: rgb(255 255 255 / 85%);
}

/* Footer */
.site-footer {
  background: var(--color-dark);
  color: rgb(255 255 255 / 75%);
  padding: var(--space-16) 0 var(--space-8);
}

.footer-grid {
  display: grid;
  gap: var(--space-12);
  grid-template-columns: 1fr;
  margin-bottom: var(--space-12);
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: 1.4fr repeat(3, 1fr);
  }
}

.footer-brand .logo {
  margin-bottom: var(--space-4);
}

.footer-brand p {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.7;
  max-width: 20rem;
}

.footer-col h4 {
  margin: 0 0 var(--space-4);
  font-size: 0.9375rem;
  color: #fff;
}

.footer-col ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.footer-col li {
  margin-bottom: 0.5rem;
}

.footer-col a {
  color: rgb(255 255 255 / 65%);
  font-size: 0.875rem;
}

.footer-col a:hover {
  color: #fff;
}

.footer-qr {
  margin: var(--space-4) 0 0;
  padding: 0;
  text-align: center;
}

.footer-qr img {
  width: 6.25rem;
  height: 6.25rem;
  object-fit: contain;
  background: #fff;
  border-radius: var(--radius-sm);
  padding: 0.25rem;
  display: block;
}

.footer-qr figcaption {
  margin-top: 0.35rem;
  font-size: 0.75rem;
  color: rgb(255 255 255 / 55%);
}

.footer-bottom {
  padding-top: var(--space-8);
  border-top: 1px solid rgb(255 255 255 / 10%);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  justify-content: space-between;
  align-items: center;
  font-size: 0.8125rem;
}

.footer-bottom a {
  color: rgb(255 255 255 / 55%);
}

/* 悬浮联系按钮（固定于视口右下角，无动画避免抖动） */
.fab-contact {
  position: fixed;
  right: 1.25rem;
  bottom: 1.25rem;
  bottom: calc(1.25rem + env(safe-area-inset-bottom, 0px));
  z-index: 10001;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  height: 2.5rem;
  padding: 0 0.85rem;
  margin: 0;
  border: none;
  background: linear-gradient(135deg, var(--color-primary), #0052a3);
  color: #fff;
  border-radius: 999px;
  box-shadow: 0 4px 16px rgb(0 102 204 / 40%);
  font-size: 0.8125rem;
  font-weight: 600;
  line-height: 1;
  font-family: inherit;
  white-space: nowrap;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  transition: box-shadow var(--transition), filter var(--transition);
}

.fab-contact:hover,
.fab-contact:focus-visible {
  color: #fff;
  filter: brightness(1.06);
  box-shadow: 0 6px 20px rgb(0 102 204 / 50%);
}

.fab-contact__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 1rem;
  height: 1rem;
  flex-shrink: 0;
}

.fab-contact__icon svg {
  display: block;
  width: 1rem;
  height: 1rem;
  max-width: 1rem;
  max-height: 1rem;
}

.fab-contact__text {
  font-size: inherit;
}

@media (max-width: 480px) {
  .fab-contact {
    right: 1rem;
    bottom: 1rem;
    bottom: calc(1rem + env(safe-area-inset-bottom, 0px));
    width: 2.75rem;
    height: 2.75rem;
    padding: 0;
    border-radius: 50%;
  }

  .fab-contact__text {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
  }
}

/* PC 端联系方式弹窗 */
.fab-modal {
  position: fixed;
  inset: 0;
  z-index: 10002;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-6);
}

.fab-modal[hidden] {
  display: none;
}

.fab-modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgb(6 16 24 / 55%);
  backdrop-filter: blur(4px);
}

.fab-modal__panel {
  position: relative;
  width: 100%;
  max-width: 22rem;
  padding: var(--space-8);
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.fab-modal__close {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  width: 2rem;
  height: 2rem;
  padding: 0;
  border: none;
  background: transparent;
  color: var(--color-text-muted);
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
  border-radius: var(--radius-sm);
}

.fab-modal__close:hover {
  color: var(--color-text);
  background: var(--color-bg);
}

.fab-modal__title {
  margin: 0 0 var(--space-2);
  font-size: 1.125rem;
}

.fab-modal__hint {
  margin: 0 0 var(--space-6);
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

.fab-modal__list {
  list-style: none;
  margin: 0 0 var(--space-6);
  padding: 0;
}

.fab-modal__list li {
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--color-border);
}

.fab-modal__list li:last-child {
  border-bottom: none;
}

.fab-modal__label {
  display: block;
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-bottom: 0.25rem;
}

.fab-modal__value {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-primary);
  word-break: break-all;
}

.fab-modal__value--text {
  color: var(--color-text);
  font-weight: 500;
}

.fab-modal__cta {
  display: block;
  width: 100%;
  text-align: center;
}

/* Utilities */
.text-center { text-align: center; }
.mt-8 { margin-top: var(--space-8); }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}