/* 公司官网（index.html）样式：主题变量、顶部导航、Hero、轮播、页脚等 */
/* ===== 呈启造物官网样式 ===== */
:root,
[data-theme="dark"] {
  --corp-accent: #4a6cf7;
  --corp-accent-hover: #5a7cff;
  --corp-accent-glow: rgba(74, 108, 247, 0.35);
  --corp-gold: #d4a853;
  --corp-gold-soft: rgba(212, 168, 83, 0.2);
  --corp-bg: #16161f;
  --corp-bg-subtle: rgba(255, 255, 255, 0.02);
  --corp-bg-card: rgba(255, 255, 255, 0.04);
  --corp-border: rgba(255, 255, 255, 0.06);
  --corp-border-strong: rgba(255, 255, 255, 0.08);
  --corp-text: #e8e8ec;
  --corp-text-strong: #fff;
  --corp-text-muted: rgba(255, 255, 255, 0.65);
  --corp-text-soft: rgba(255, 255, 255, 0.45);
  --corp-text-dim: rgba(255, 255, 255, 0.35);
  --corp-header-bg: rgba(22, 22, 31, 0.85);
  --corp-header-bg-scrolled: rgba(22, 22, 31, 0.95);
  --corp-hero-grad-1: rgba(74, 108, 247, 0.32);
  --corp-hero-grad-2: rgba(140, 80, 200, 0.18);
  --corp-carousel-btn-bg: rgba(10, 10, 15, 0.55);
  --corp-logo-filter:
    drop-shadow(0 0 40px var(--corp-accent-glow))
    drop-shadow(0 0 80px var(--corp-gold-soft));
}

[data-theme="light"] {
  --corp-accent-glow: rgba(74, 108, 247, 0.22);
  --corp-gold-soft: rgba(212, 168, 83, 0.15);
  --corp-bg: #f8f9fc;
  --corp-bg-subtle: rgba(0, 0, 0, 0.02);
  --corp-bg-card: rgba(0, 0, 0, 0.03);
  --corp-border: rgba(0, 0, 0, 0.06);
  --corp-border-strong: rgba(0, 0, 0, 0.1);
  --corp-text: #1a1a24;
  --corp-text-strong: #0a0a0f;
  --corp-text-muted: rgba(0, 0, 0, 0.62);
  --corp-text-soft: rgba(0, 0, 0, 0.48);
  --corp-text-dim: rgba(0, 0, 0, 0.38);
  --corp-header-bg: rgba(248, 249, 252, 0.88);
  --corp-header-bg-scrolled: rgba(248, 249, 252, 0.96);
  --corp-hero-grad-1: rgba(74, 108, 247, 0.14);
  --corp-hero-grad-2: rgba(140, 80, 200, 0.1);
  --corp-carousel-btn-bg: rgba(255, 255, 255, 0.82);
  --corp-logo-filter:
    drop-shadow(0 0 24px var(--corp-accent-glow))
    drop-shadow(0 4px 16px rgba(0, 0, 0, 0.08));
  color-scheme: light;
}

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

html {
  scroll-behavior: smooth;
  background: var(--corp-bg);
  overflow-y: scroll;
  color-scheme: dark;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--corp-bg);
  color: var(--corp-text);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background 0.3s, color 0.3s;
}

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

/* ===== 顶栏 ===== */
.corp-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--corp-header-bg);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--corp-border);
  transition: background 0.3s, border-color 0.3s;
}

.corp-header.scrolled {
  background: var(--corp-header-bg-scrolled);
}

.corp-header-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 32px;
  height: 72px;
  display: flex;
  align-items: center;
  gap: 40px;
  position: relative;
}

.corp-header-actions,
.header-utilities {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-left: auto;
  flex-shrink: 0;
}

.corp-logo {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--corp-text-strong);
  white-space: nowrap;
}

.corp-nav {
  display: flex;
  gap: 32px;
  flex: 1;
}

.corp-nav a {
  font-size: 14px;
  color: var(--corp-text-muted);
  letter-spacing: 1px;
  transition: color 0.2s;
  position: relative;
}

.corp-nav a:hover,
.corp-nav a.active {
  color: var(--corp-text-strong);
}

.corp-nav a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--corp-accent);
  transition: width 0.3s;
}

.corp-nav a:hover::after,
.corp-nav a.active::after {
  width: 100%;
}

.corp-employee-btn {
  padding: 8px 20px;
  border: 1px solid var(--corp-border-strong);
  border-radius: 4px;
  font-size: 13px;
  color: var(--corp-text-strong);
  letter-spacing: 1px;
  transition: all 0.25s;
  white-space: nowrap;
}

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

.corp-menu-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  color: var(--corp-text-strong);
  font-size: 24px;
  cursor: pointer;
  padding: 4px;
  transition: color 0.2s;
  margin-left: auto;
}

/* ===== 顶栏主题切换 ===== */
.corp-header-theme-switch {
  position: relative;
  width: 68px;
  height: 34px;
  flex-shrink: 0;
  user-select: none;
  -webkit-user-select: none;
}

.corp-header-theme-switch input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.corp-header-theme-switch .corp-theme-switch-track {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  height: 100%;
  padding: 0 5px;
  border-radius: 999px;
  background: var(--corp-bg-subtle);
  border: 1px solid var(--corp-border-strong);
  cursor: pointer;
  position: relative;
  box-sizing: border-box;
  transition: background 0.25s, border-color 0.25s;
}

.corp-header-theme-switch .corp-theme-switch-track::after {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--corp-text-strong);
  transition: transform 0.25s;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.22);
  z-index: 1;
}

.corp-header-theme-switch input:checked + .corp-theme-switch-track {
  background: rgba(74, 108, 247, 0.12);
  border-color: var(--corp-accent);
}

.corp-header-theme-switch input:checked + .corp-theme-switch-track::after {
  transform: translateX(34px);
  background: #f5b942;
}

.corp-header-theme-switch input:not(:checked) + .corp-theme-switch-track::after {
  background: #2a3350;
}

[data-theme="light"] .corp-header-theme-switch input:not(:checked) + .corp-theme-switch-track::after {
  background: #3d4a6e;
}

.corp-header-theme-switch input:focus-visible + .corp-theme-switch-track {
  outline: 2px solid var(--corp-accent);
  outline-offset: 2px;
}

.corp-theme-switch-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  z-index: 2;
  pointer-events: none;
  user-select: none;
  transition: opacity 0.2s, transform 0.2s, color 0.2s;
}

.corp-theme-switch-icon svg {
  width: 16px;
  height: 16px;
  display: block;
}

.corp-theme-switch-icon-dark {
  color: #9ec5ff;
}

.corp-theme-switch-icon-light {
  color: #f0a500;
}

.corp-header-theme-switch input:not(:checked) + .corp-theme-switch-track .corp-theme-switch-icon-dark {
  opacity: 1;
  color: #c8e0ff;
  transform: scale(1.1);
  filter: drop-shadow(0 0 4px rgba(158, 197, 255, 0.8));
}

.corp-header-theme-switch input:not(:checked) + .corp-theme-switch-track .corp-theme-switch-icon-light {
  opacity: 0.5;
  transform: scale(0.9);
}

.corp-header-theme-switch input:checked + .corp-theme-switch-track .corp-theme-switch-icon-light {
  opacity: 1;
  color: #fff;
  transform: scale(1.1);
  filter: drop-shadow(0 0 4px rgba(255, 255, 255, 0.45));
}

.corp-header-theme-switch input:checked + .corp-theme-switch-track .corp-theme-switch-icon-dark {
  opacity: 0.45;
  transform: scale(0.92);
}

/* ===== Hero ===== */
.corp-hero {
  --hero-header-space: 72px;
  --hero-footer-space: 132px;
  --logo-aspect: 0.7379; /* 853 / 1156 */
  --logo-max-w: min(96vw, 639px);
  min-height: 100vh;
  min-height: 100svh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  position: relative;
  z-index: 1;
  padding: var(--hero-header-space) 24px 28px;
  box-sizing: border-box;
  background:
    radial-gradient(ellipse at 50% 25%, var(--corp-hero-grad-1) 0%, transparent 55%),
    radial-gradient(ellipse at 15% 75%, var(--corp-gold-soft) 0%, transparent 45%),
    radial-gradient(ellipse at 88% 55%, var(--corp-hero-grad-2) 0%, transparent 42%),
    var(--corp-bg);
  overflow: hidden;
}

.corp-hero-glow {
  position: absolute;
  inset: -20%;
  pointer-events: none;
  background:
    radial-gradient(ellipse at 50% 25%, var(--corp-hero-grad-1) 0%, transparent 55%),
    radial-gradient(ellipse at 15% 75%, var(--corp-gold-soft) 0%, transparent 45%),
    radial-gradient(ellipse at 88% 55%, var(--corp-hero-grad-2) 0%, transparent 42%);
  animation: corpGlowShift 14s ease-in-out infinite alternate;
}

.corp-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.02'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  opacity: 0.5;
  z-index: 0;
}

[data-theme="light"] .corp-hero::before {
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23000000' fill-opacity='0.04'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  opacity: 0.6;
}

.corp-hero-body {
  position: relative;
  z-index: 1;
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  max-width: 900px;
  min-height: 0;
}

.corp-hero-footer {
  position: relative;
  z-index: 1;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 32px;
  width: 100%;
  max-width: 900px;
  padding-top: 4px;
}

.corp-hero-logo-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  min-height: 0;
  margin: 0;
}

.corp-hero-logo {
  --logo-max-h: calc(100svh - var(--hero-header-space) - var(--hero-footer-space));
  max-width: min(var(--logo-max-w), calc(var(--logo-max-h) * var(--logo-aspect)));
  max-height: min(var(--logo-max-h), calc(var(--logo-max-w) / var(--logo-aspect)));
  width: auto;
  height: auto;
  aspect-ratio: 853 / 1156;
  object-fit: contain;
  filter: var(--corp-logo-filter);
}

.corp-hero-tagline {
  font-size: clamp(16px, 2vw, 20px);
  color: var(--corp-text-muted);
  letter-spacing: 3px;
  margin: 0;
}

.corp-hero-scroll {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  color: var(--corp-text-dim);
  transition: color 0.25s;
}

.corp-hero-scroll:hover {
  color: var(--corp-text-muted);
}

.corp-hero-scroll-chevrons {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  filter: drop-shadow(0 0 6px rgba(255, 255, 255, 0.12));
}

.corp-scroll-chevron {
  display: block;
  width: 26px;
  height: 13px;
  opacity: 0;
  animation: corpScrollChevron 1.8s ease-in-out infinite;
}

.corp-scroll-chevron:nth-child(2) {
  margin-top: -5px;
  animation-delay: 0.22s;
}

@keyframes corpScrollChevron {
  0% { opacity: 0; transform: translateY(-4px); }
  45% { opacity: 1; }
  100% { opacity: 0; transform: translateY(6px); }
}

@keyframes corpGlowShift {
  0% { transform: scale(1) translate(0, 0); opacity: 0.85; }
  100% { transform: scale(1.06) translate(1%, -1%); opacity: 1; }
}

@media (prefers-reduced-motion: reduce) {
  .corp-hero-glow {
    animation: none;
  }
}

/* ===== 通用区块 ===== */
.corp-section {
  padding: 120px 32px;
  max-width: 1280px;
  margin: 0 auto;
  border-top: 1px solid var(--corp-border);
}

.corp-section-label {
  font-size: 12px;
  letter-spacing: 4px;
  color: var(--corp-gold);
  text-transform: uppercase;
  margin-bottom: 16px;
}

.corp-section-title {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 300;
  letter-spacing: 4px;
  margin-bottom: 48px;
}

.corp-section-title strong {
  font-weight: 700;
}

/* ===== 关于我们 ===== */
.corp-about {
  border-top: none;
}

.corp-about-text {
  max-width: 720px;
  font-size: 16px;
  color: var(--corp-text-muted);
  line-height: 2;
}

.corp-about-text p + p {
  margin-top: 20px;
}

/* ===== 核心业务 ===== */
.corp-services {
  background: var(--corp-bg-subtle);
  padding-top: 48px;
  padding-bottom: 56px;
}

.corp-services .corp-section-title {
  margin-bottom: 32px;
}

.corp-service-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.corp-service-card {
  padding: 40px 32px;
  border: 1px solid var(--corp-border-strong);
  border-radius: 8px;
  transition: border-color 0.3s, transform 0.3s;
}

.corp-service-card:hover {
  border-color: rgba(74, 108, 247, 0.4);
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(74, 108, 247, 0.08);
}

.corp-service-icon {
  font-size: 32px;
  margin-bottom: 20px;
}

.corp-service-card h3 {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 2px;
  margin-bottom: 12px;
}

.corp-service-card p {
  font-size: 14px;
  color: var(--corp-text-soft);
  line-height: 1.8;
}

/* ===== 作品展示 · 走马灯 ===== */
.corp-carousel {
  position: relative;
  width: calc(100% - 16px);
  margin: 0 auto;
}

.corp-carousel-viewport {
  position: relative;
  overflow: hidden;
  border-radius: 10px;
}

.corp-carousel-track {
  display: flex;
  transition: transform 0.55s cubic-bezier(0.4, 0, 0.2, 1);
}

.corp-carousel-slide {
  flex: 0 0 100%;
}

.corp-work-item {
  aspect-ratio: 16 / 9;
  background: var(--corp-bg-card);
  border: 1px solid var(--corp-border-strong);
  border-radius: 10px;
  overflow: hidden;
}

.corp-work-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.corp-carousel-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 44px;
  height: 44px;
  border: 1px solid var(--corp-border-strong);
  border-radius: 50%;
  background: var(--corp-carousel-btn-bg);
  backdrop-filter: blur(6px);
  color: var(--corp-text-strong);
  font-size: 26px;
  line-height: 1;
  cursor: pointer;
  transition: all 0.25s;
  z-index: 2;
}

.corp-carousel-btn:hover {
  background: var(--corp-bg-subtle);
  border-color: var(--corp-accent);
  color: var(--corp-accent);
}

.corp-carousel-prev {
  left: 16px;
}

.corp-carousel-next {
  right: 16px;
}

.corp-carousel-dots {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-top: 24px;
}

.corp-carousel-dot {
  width: 8px;
  height: 8px;
  border: none;
  border-radius: 50%;
  padding: 0;
  background: var(--corp-text-dim);
  cursor: pointer;
  transition: all 0.3s;
}

.corp-carousel-dot:hover {
  background: var(--corp-text-muted);
}

.corp-carousel-dot.active {
  width: 24px;
  border-radius: 4px;
  background: var(--corp-accent);
}

/* ===== 联系我们 ===== */
.corp-contact {
  background: var(--corp-bg-subtle);
  padding-top: 48px;
  padding-bottom: 56px;
}

.corp-contact .corp-section-title {
  margin-bottom: 32px;
}

.corp-contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 32px;
}

.corp-contact-item h4 {
  font-size: 13px;
  letter-spacing: 2px;
  color: var(--corp-text-dim);
  margin-bottom: 8px;
}

.corp-contact-item p {
  font-size: 16px;
  color: var(--corp-text-muted);
}

/* ===== 页脚 ===== */
.corp-footer {
  border-top: 1px solid var(--corp-border);
  padding: 32px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 8px;
  max-width: 1280px;
  margin: 0 auto;
  font-size: 13px;
  color: var(--corp-text-dim);
}

.corp-footer-beian {
  color: var(--corp-text-dim);
  transition: color 0.2s;
}

.corp-footer-beian:hover {
  color: var(--corp-text-muted);
}

/* ===== 响应式 ===== */
@media (max-width: 768px) {
  .corp-header-inner {
    padding: 0 16px;
    height: 56px;
    min-height: 56px;
    max-height: 56px;
    gap: 12px;
  }

  .corp-logo {
    font-size: 18px;
    letter-spacing: 1px;
  }

  .corp-menu-toggle {
    display: flex;
    margin-left: auto;
  }

  .corp-header-actions,
  .header-utilities {
    margin-left: 0;
  }

  .corp-nav {
    display: none;
    position: absolute;
    top: 56px;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: var(--corp-header-bg-scrolled);
    border-bottom: 1px solid var(--corp-border);
    padding: 12px 0;
  }

  .corp-nav.open {
    display: flex;
  }

  .corp-nav a {
    padding: 12px 24px;
    font-size: 15px;
  }

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

  .corp-employee-btn {
    padding: 6px 12px;
    font-size: 12px;
  }

  .corp-header-actions,
  .header-utilities {
    gap: 8px;
  }

  .corp-section {
    padding: 64px 20px;
  }

  .corp-section-title {
    letter-spacing: 2px;
    margin-bottom: 32px;
  }

  .corp-about-text {
    font-size: 15px;
    line-height: 1.85;
  }

  .corp-services,
  .corp-contact {
    padding-top: 12px;
    padding-bottom: 12px;
  }

  .corp-service-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .corp-service-card {
    padding: 28px 24px;
  }

  .corp-contact-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .corp-hero {
    --hero-header-space: 56px;
    --hero-footer-space: 88px;
    --logo-max-w: min(88vw, 360px);
    height: var(--hero-locked-h, 100vh);
    min-height: var(--hero-locked-h, 100vh);
    max-height: var(--hero-locked-h, 100vh);
    padding: 56px 16px 16px;
  }

  .corp-hero-body {
    flex: 1;
    min-height: 0;
    overflow: hidden;
  }

  .corp-hero-footer {
    position: absolute;
    bottom: 16px;
    left: 0;
    right: 0;
    gap: 16px;
  }

  .corp-hero-tagline {
    font-size: 14px;
    letter-spacing: 2px;
  }

  .corp-hero-logo {
    --logo-max-h: var(--hero-logo-max-h, 420px);
    max-height: var(--hero-logo-max-h, 420px);
    filter: var(--corp-logo-filter);
  }

  .corp-carousel-btn {
    width: 32px;
    height: 32px;
    font-size: 20px;
  }

  .corp-carousel {
    width: 100%;
  }

  .corp-carousel-prev {
    left: 8px;
  }

  .corp-carousel-next {
    right: 8px;
  }

  .corp-carousel-dots {
    margin-top: 16px;
    gap: 8px;
  }

  .corp-footer {
    padding: 24px 20px;
  }
}

/* 1080p 等较短桌面屏：缩小 logo、留出更多上下空间，不影响 1440p+ */
@media (max-height: 1080px) and (min-width: 769px) {
  .corp-hero {
    --hero-footer-space: 168px;
    --logo-max-w: min(46vw, 440px);
    padding-bottom: 40px;
  }

  .corp-hero-body {
    padding: 20px 0;
  }

  .corp-hero-footer {
    gap: 24px;
  }

  .corp-hero-tagline {
    font-size: 17px;
    letter-spacing: 2px;
  }
}