/* ===== v2 inline style block 1 ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --color-white: #FFFFFF;
  --color-orange: #FF6F00;
  --color-gray-black: #2A2D33;
  --color-tiffany: #A8DCD6;
  --color-tiffany-deep: #0C8A9B;
  --color-tiffany-soft: rgba(168, 220, 214, 0.18);
  --color-text: #333333;
  --color-border: #E0E0E0;
  --nav-height: 64px;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, "Microsoft YaHei", sans-serif;
  color: var(--color-text);
  background: var(--color-white);
  padding-top: var(--nav-height);
}

.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 1000;
  width: 100%;
  height: var(--nav-height);
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow 0.3s ease;
}

.site-nav.nav-scrolled {
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
}

.nav-inner {
  width: min(1180px, calc(100% - 48px));
  height: 100%;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.logo {
  flex: 0 0 auto;
  color: var(--color-orange);
  font-size: 22px;
  font-weight: 700;
  line-height: 1;
  text-decoration: none;
  white-space: nowrap;
}

.nav-menu {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 28px;
  list-style: none;
}

.nav-menu a {
  color: var(--color-text);
  font-size: 15px;
  line-height: 1;
  text-decoration: none;
  transition: color 0.2s ease;
  white-space: nowrap;
}

.nav-menu a:hover,
.nav-menu a:focus,
.nav-menu a.nav-active {
  color: var(--color-orange);
}

.hero-section {
  background: var(--color-white);
  scroll-margin-top: var(--nav-height);
}

.hero-inner {
  width: min(960px, calc(100% - 48px));
  margin: 0 auto;
  padding: 44px 0 12px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.about-section {
  padding-top: 12px;
}

.hero-inner h1 {
  color: var(--color-gray-black);
  font-size: clamp(36px, 4vw, 48px);
  font-weight: 700;
  line-height: 1.28;
}

.slogan-highlight {
  color: var(--color-gray-black);
  font-weight: 700;
}

.contest-image {
  width: 100%;
  max-width: 720px;
  height: auto;
  border-radius: 12px;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.12);
  display: block;
  margin: 0 auto;
}

/* ===== Hero 图片轮播（手机可左右滑动） ===== */
.hero-carousel {
  width: 100%;
  max-width: 900px;
  margin: 0 auto;
  position: relative;
}

.carousel-viewport {
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  border-radius: 14px;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.12);
}
.carousel-viewport::-webkit-scrollbar { display: none; }

.carousel-track {
  display: flex;
  margin: 0;
  padding: 0;
  list-style: none;
}

.carousel-slide {
  flex: 0 0 100%;
  scroll-snap-align: center;
  position: relative;
}

.carousel-slide img {
  width: 100%;
  height: auto;
  display: block;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.carousel-caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  margin: 0;
  padding: 16px 18px 14px;
  font-size: 14px;
  color: #fff;
  text-align: left;
  background: linear-gradient(to top, rgba(12, 138, 155, 0.88), rgba(12, 138, 155, 0));
}

.carousel-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 40px;
  height: 40px;
  border: none;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.88);
  color: var(--color-gray-black);
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.18);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s, opacity 0.2s;
}
.carousel-btn:hover { background: #fff; }
.carousel-prev { left: 12px; }
.carousel-next { right: 12px; }

.carousel-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 14px;
}
.carousel-dots button {
  width: 9px;
  height: 9px;
  padding: 0;
  border: none;
  border-radius: 50%;
  background: #CFE7E4;
  cursor: pointer;
  transition: background 0.2s, transform 0.2s;
}
.carousel-dots button.active {
  background: var(--color-tiffany-deep);
  transform: scale(1.25);
}

.contest-intro {
  width: min(800px, 100%);
  margin: 28px auto 0;
  color: var(--color-text);
  font-size: 18px;
  line-height: 1.9;
  text-align: center;
}

.content-section,
.section-placeholder {
  min-height: 1px;
  scroll-margin-top: var(--nav-height);
}

.content-section {
  background: var(--color-white);
  padding: 96px 0;
}

.content-section.section-visible {
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.section-inner {
  width: min(1080px, calc(100% - 48px));
  margin: 0 auto;
}

.section-title {
  color: var(--color-gray-black);
  font-size: 36px;
  font-weight: 700;
  line-height: 1.25;
  text-align: center;
}

.section-line {
  width: 60px;
  height: 4px;
  margin: 20px auto 36px;
  background: var(--color-orange);
}

.section-subtitle {
  margin: -12px 0 40px;
  color: var(--color-gray-black);
  font-size: 18px;
  line-height: 1.7;
  text-align: center;
}

.about-text {
  max-width: 800px;
  margin: 0 auto;
  color: var(--color-text);
  font-size: 18px;
  line-height: 1.9;
  text-align: center;
}

.business-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.business-card {
  min-height: 100%;
  padding: 32px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  display: flex;
  flex-direction: column;
}

.business-card:hover {
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
  transform: translateY(-4px);
}

.card-icon {
  min-width: 56px;
  height: 56px;
  padding: 0 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  background: var(--color-orange);
  border-radius: 999px;
  font-size: 14px;
  font-weight: 700;
  line-height: 1;
  white-space: nowrap;
  letter-spacing: 0.02em;
}

.business-card h3 {
  margin: 24px 0 0 -32px;
  padding: 0 32px 12px;
  color: var(--color-gray-black);
  font-size: 20px;
  font-weight: 700;
  line-height: 1.35;
  border-bottom: 2px solid var(--color-tiffany);
}

.business-card > p {
  min-height: 80px;
  margin-top: 14px;
  color: var(--color-text);
  font-size: 15px;
  line-height: 1.8;
}

.brands-section {
  background: var(--color-tiffany);
}

.brands-section .section-line {
  background: var(--color-gray-black);
}

.brand-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.brand-card {
  padding: 0;
  background: var(--color-white);
  border-radius: 12px;
  overflow: hidden;
}

.brand-image {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: contain;
  display: block;
  margin: 0 0 24px;
  background: var(--color-white, #FFFFFF);
}

.brand-card h3 {
  padding: 0 32px;
  color: var(--color-gray-black);
  font-size: 24px;
  font-weight: 700;
  line-height: 1.3;
}

.brand-card p {
  margin-top: 12px;
  padding: 0 32px 32px;
  color: var(--color-text);
  font-size: 15px;
  line-height: 1.8;
}

.award-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.award-card {
  padding: 32px;
  color: var(--color-white);
  background: var(--color-gray-black);
  border-radius: 12px;
}

.award-label {
  margin: 0 0 10px -32px;
  padding: 0 32px 12px;
  color: var(--color-orange);
  font-size: 24px;
  font-weight: 700;
  line-height: 1.3;
  border-bottom: 2px solid var(--color-tiffany);
}

.award-card p:not(.award-label) {
  margin-top: 10px;
  color: var(--color-white);
  font-size: 15px;
  line-height: 1.8;
}

/* 获奖荣誉轮播 */
.award-carousel-wrap {
  margin-top: 18px;
}

.award-carousel {
  position: relative;
  height: 240px;
  border-radius: 10px;
  overflow: hidden;
  background: #fff;
}

.award-carousel .carousel-viewport {
  height: 100%;
  border-radius: 10px;
}

.award-carousel .carousel-track {
  height: 100%;
}

.award-carousel .carousel-slide {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #fff;
}

.award-carousel .carousel-slide img {
  width: auto;
  height: auto;
  max-width: 100%;
  max-height: 100%;
  aspect-ratio: auto;
  object-fit: contain;
}

.award-carousel .carousel-btn {
  background: rgba(255, 255, 255, 0.92);
}

.award-carousel-wrap .carousel-dots {
  margin-top: 12px;
}

.award-carousel-wrap .carousel-dots button {
  background: rgba(255, 255, 255, 0.45);
}

.award-carousel-wrap .carousel-dots button.active {
  background: var(--color-orange);
}

.award-media-list {
  margin-top: 14px;
  padding: 0;
  list-style: none;
}

.award-media-list li {
  padding: 10px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

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

.award-media-list a {
  display: block;
  color: var(--color-tiffany);
  font-size: 15px;
  line-height: 1.7;
  text-decoration: none;
  transition: color 0.2s ease;
}

.award-media-list a:hover {
  color: #fff;
  text-decoration: underline;
}

@media (max-width: 768px) {
  .award-carousel {
    height: 200px;
  }
}

.contact-section {
  color: var(--color-white);
  background: var(--color-gray-black);
}

.contact-section .section-title {
  color: var(--color-white);
}

.contact-section .section-title,
.contact-section .section-subtitle {
  width: min(920px, 100%);
  margin-left: auto;
  margin-right: auto;
}

.contact-section .section-subtitle {
  color: rgba(255, 255, 255, 0.7);
}

.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(260px, 0.65fr);
  gap: 48px;
  max-width: 920px;
  margin: 0 auto;
}

.contact-list {
  display: grid;
  gap: 22px;
}

.contact-item dt {
  color: var(--color-orange);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.4;
}

.contact-item dd {
  margin-top: 8px;
  color: var(--color-white);
  font-size: 17px;
  line-height: 1.8;
}

.qr-code {
  width: 80px;
  height: 80px;
  margin-top: 28px;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  display: block;
}

.qr-tip {
  width: 80px;
  margin-top: 8px;
  color: rgba(255, 255, 255, 0.6);
  font-size: 13px;
  line-height: 1.5;
  text-align: center;
}

.site-footer {
  padding: 24px 0;
  background: #171717;
}

.footer-inner {
  width: min(1080px, calc(100% - 48px));
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 32px;
  color: rgba(255, 255, 255, 0.5);
  font-size: 14px;
  line-height: 1.7;
  text-align: center;
}

.footer-inner p + p::before {
  content: "·";
  margin-right: 32px;
}

.back-to-top {
  position: fixed;
  right: 32px;
  bottom: 32px;
  z-index: 900;
  width: 48px;
  height: 48px;
  color: var(--color-white);
  background: var(--color-gray-black);
  border: 0;
  border-radius: 50%;
  cursor: pointer;
  font-size: 24px;
  line-height: 1;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.back-to-top:hover,
.back-to-top:focus {
  background: var(--color-orange);
}

.back-to-top.back-to-top-visible {
  opacity: 1;
  visibility: visible;
}

@media (max-width: 900px) {
  .nav-inner {
    width: min(100% - 32px, 720px);
    gap: 18px;
  }

  .nav-menu {
    gap: 16px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  .nav-menu::-webkit-scrollbar {
    display: none;
  }

  .nav-menu a {
    font-size: 14px;
  }

  .hero-inner {
    width: min(100% - 32px, 720px);
    padding: 28px 0 24px;
  }

  .contest-image {
    max-width: 680px;
  }

  .section-inner {
    width: min(100% - 32px, 720px);
  }

  .business-grid {
    grid-template-columns: 1fr;
  }

  .brand-grid,
  .award-grid {
    grid-template-columns: 1fr;
  }

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

  .footer-inner {
    flex-direction: column;
    gap: 6px;
  }

  .footer-inner p + p::before {
    content: none;
    margin-right: 0;
  }
}

@media (max-width: 600px) {
  .nav-inner {
    width: calc(100% - 24px);
    gap: 14px;
  }

  .nav-menu {
    flex: 1 1 auto;
    justify-content: flex-start;
    gap: 14px;
  }

  .nav-menu li:first-child {
    border-left: 1px solid var(--color-border);
    padding-left: 14px;
  }

  .hero-inner h1 {
    font-size: 34px;
  }

  .contest-intro {
    font-size: 16px;
    line-height: 1.8;
  }

  .content-section {
    padding: 64px 0;
  }

  .section-inner {
    width: calc(100% - 48px);
  }

  .section-title {
    font-size: 30px;
  }

  .about-text {
    font-size: 16px;
    line-height: 1.85;
  }

  .business-card {
    padding: 28px;
  }

  .award-card {
    padding: 28px;
  }

  .brand-card h3 {
    padding: 0 28px;
  }

  .brand-card p {
    padding: 0 28px 28px;
  }

  .section-subtitle {
    margin-bottom: 32px;
  }

  .back-to-top {
    right: 20px;
    bottom: 20px;
    width: 40px;
    height: 40px;
    font-size: 20px;
  }
}

/* ===== 移动端菜单开关 ===== */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  margin-left: auto;
  background: transparent;
  border: 0;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-gray-black);
  transition: transform 0.3s ease, opacity 0.3s ease;
}

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

/* ===== 二级/三级下拉菜单 ===== */
.has-submenu { position: relative; }

.caret {
  display: inline-block;
  width: 0;
  height: 0;
  margin-left: 6px;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 5px solid currentColor;
  vertical-align: middle;
  transition: transform 0.2s ease;
}

.caret-right {
  border-top: 4px solid transparent;
  border-bottom: 4px solid transparent;
  border-left: 5px solid currentColor;
  border-right: 0;
  margin-left: 10px;
}

.has-submenu.open > .nav-link .caret,
.has-submenu:hover > .nav-link .caret { transform: rotate(180deg); }

.submenu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 212px;
  padding: 8px 0;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.12);
  list-style: none;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s;
  z-index: 60;
}

.submenu-3 {
  top: -9px;
  left: 100%;
  margin-left: 4px;
}

.has-submenu:hover > .submenu,
.has-submenu.open > .submenu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.submenu a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 11px 18px;
  font-size: 14px;
  color: var(--color-text);
  white-space: nowrap;
}

.submenu a:hover,
.submenu a:focus {
  background: #F7FAFA;
  color: var(--color-orange);
}

/* 右侧菜单右对齐，避免溢出视口 */
.nav-menu > .nav-item:last-child > .submenu,
.nav-menu > .nav-item:nth-last-child(2) > .submenu {
  left: auto;
  right: 0;
}

.nav-menu > .nav-item:last-child .submenu-3,
.nav-menu > .nav-item:nth-last-child(2) .submenu-3,
.nav-menu > .nav-item:nth-last-child(3) .submenu-3 {
  left: auto;
  right: 100%;
  margin-left: 0;
  margin-right: 4px;
}

/* ===== 子版块（二级/三级锚点落点） ===== */
.subsections {
  width: min(1080px, calc(100% - 48px));
  margin: 56px auto 0;
}

.sub-block { margin-bottom: 44px; }

.sub-block > h3 {
  color: var(--color-gray-black);
  font-size: 22px;
  font-weight: 700;
  padding: 0 32px 12px;
  border-bottom: 2px solid var(--color-tiffany);
  margin-bottom: 22px;
  text-align: left;
  scroll-margin-top: calc(var(--nav-height) + 16px);
}

/* 承办大赛作为主视觉区一级标题，保持居中且无左右内边距 */
#contest-title {
  padding-left: 0;
  padding-right: 0;
  text-align: center;
}

/* 承办大赛作为主视觉区一级标题，保持居中 */
#contest-title {
  text-align: center;
}

.sub-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}

.sub-card {
  padding: 22px 24px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 12px;
  scroll-margin-top: calc(var(--nav-height) + 16px);
}

.sub-card h4 {
  color: var(--color-orange);
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
}

.sub-card p {
  color: var(--color-text);
  font-size: 15px;
  line-height: 1.8;
}

.sub-grid-inside {
  grid-template-columns: 1fr;
  margin-top: 20px;
  padding-top: 0;
  gap: 14px;
  width: 100%;
}

.sub-card-inside {
  padding: 16px 18px;
  background: #F7FAFA;
  border-color: #E3EFEF;
}

.sub-card-inside h4 { font-size: 15px; }

/* ===== 关键数据条（hero 内） ===== */
.contest-stats {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 16px;
  width: 100%;
  margin-top: 36px;
  padding: 22px 24px;
  background: var(--color-tiffany-soft);
  border: 1px solid rgba(168, 220, 214, 0.45);
  border-radius: 12px;
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 6px;
}

.stat strong {
  color: var(--color-tiffany-deep);
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
}

.stat strong small {
  font-size: 14px;
  font-weight: 600;
  margin-left: 2px;
  color: var(--color-tiffany-deep);
}

.stat strong .stat-prefix {
  font-size: 14px;
  font-weight: 600;
  margin-right: 2px;
  color: var(--color-tiffany-deep);
}

.stat span {
  color: var(--color-text);
  font-size: 13px;
  line-height: 1.4;
}

/* ===== 媒体卡片 ===== */
.media-grid {
  grid-template-columns: repeat(2, 1fr);
}

@media (max-width: 640px) {
  .media-grid { grid-template-columns: 1fr; }
}

.media-card {
  display: flex;
  flex-direction: column;
  gap: 4px;
  text-decoration: none;
  color: inherit;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.media-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
  border-color: var(--color-tiffany);
}

.media-card:hover .media-cta { color: var(--color-orange); }

.media-source {
  display: inline-block;
  align-self: flex-start;
  padding: 2px 10px;
  background: rgba(255, 111, 0, 0.1);
  color: var(--color-orange);
  font-size: 12px;
  font-weight: 600;
  border-radius: 100px;
  margin-bottom: 6px;
}

.media-card h4 {
  color: var(--color-gray-black);
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 4px;
}

.media-card p {
  flex: 1;
  color: var(--color-text);
  font-size: 14px;
  line-height: 1.7;
  margin-bottom: 8px;
}

.media-cta {
  color: var(--color-tiffany-deep);
  font-size: 13px;
  font-weight: 600;
  margin-top: auto;
  transition: color 0.3s ease;
}

.brand-sub {
  padding: 0 32px;
  scroll-margin-top: calc(var(--nav-height) + 16px);
}

.brand-sub h4 {
  margin: 16px 0 6px -32px;
  padding: 0 32px 10px;
  color: var(--color-orange);
  font-size: 15px;
  font-weight: 700;
  border-bottom: 2px solid var(--color-tiffany);
}

.brand-sub p {
  color: var(--color-text);
  font-size: 14px;
  line-height: 1.7;
  padding-bottom: 8px;
  text-align: justify;
  text-align-last: left;
  text-justify: inter-ideograph;
}

.contact-subsections { margin-top: 48px; }

.contact-subsections .sub-block > h3 {
  color: #fff;
  border-bottom-color: var(--color-orange);
}

.contact-subsections .sub-card {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.14);
}

.contact-subsections .sub-card h4 { color: var(--color-orange); }

.contact-subsections .sub-card p { color: rgba(255, 255, 255, 0.82); }

/* 在线留言表单（深色背景适配） */
.message-form { margin-top: 10px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.form-field { display: flex; flex-direction: column; gap: 6px; margin-bottom: 14px; }
.form-field label { font-size: 13px; color: rgba(255, 255, 255, 0.82); }
.form-field .req { color: var(--color-orange); }
.message-form input,
.message-form textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.92);
  color: #1d2026;
  font-size: 14px;
  font-family: inherit;
  box-sizing: border-box;
}
.message-form input::placeholder,
.message-form textarea::placeholder { color: #9a9a9a; }
.message-form input:focus,
.message-form textarea:focus {
  outline: none;
  border-color: var(--color-tiffany);
  box-shadow: 0 0 0 3px rgba(168, 220, 214, 0.25);
}
.message-form textarea { resize: vertical; min-height: 92px; }
.hp-field { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.btn-submit {
  margin-top: 2px;
  padding: 10px 30px;
  border: none;
  border-radius: 999px;
  background: var(--color-orange);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: transform .15s ease, box-shadow .15s ease;
}
.btn-submit:hover { transform: translateY(-1px); box-shadow: 0 6px 18px rgba(255, 111, 0, 0.35); }
.btn-submit:disabled { opacity: .6; cursor: not-allowed; transform: none; box-shadow: none; }
.form-status { margin: 12px 0 0; font-size: 13px; min-height: 18px; line-height: 1.5; }
.form-status.ok { color: #7CE0C3; }
.form-status.err { color: #FFB4A8; }
@media (max-width: 560px) {
  .form-row { grid-template-columns: 1fr; }
}

/* ===== 移动端下拉改为纵向展开 ===== */
@media (max-width: 900px) {
  .nav-toggle { display: inline-flex; }

  .nav-menu {
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: #fff;
    border-bottom: 1px solid var(--color-border);
    box-shadow: 0 14px 34px rgba(0, 0, 0, 0.12);
    max-height: calc(100vh - var(--nav-height));
    overflow-y: auto;
    padding: 8px 20px 20px;
    display: none;
  }

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

  .nav-menu > .nav-item { border-bottom: 1px solid #f0f0f0; }

  .nav-menu > .nav-item > .nav-link {
    display: block;
    padding: 15px 0;
    font-size: 16px;
  }

  .has-submenu > .nav-link .caret { float: right; margin-top: 6px; }

  .submenu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border: 0;
    border-radius: 0;
    min-width: 0;
    padding: 0 0 6px 14px;
    display: none;
  }

  .has-submenu.open > .submenu { display: block; }

  .submenu-3 {
    position: static;
    margin: 0;
    padding-left: 14px;
  }

  .submenu a { padding: 12px 0; font-size: 15px; }

  .caret-right { transform: rotate(90deg); }

  .nav-menu > .nav-item:last-child > .submenu,
  .nav-menu > .nav-item:nth-last-child(2) > .submenu,
  .nav-menu > .nav-item:last-child .submenu-3,
  .nav-menu > .nav-item:nth-last-child(2) .submenu-3,
  .nav-menu > .nav-item:nth-last-child(3) .submenu-3 {
    left: auto;
    right: auto;
  }

  .contest-stats {
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
    padding: 18px 16px;
  }
  .stat strong { font-size: 24px; }
  .stat span { font-size: 12px; }
}

@media (max-width: 480px) {
  .contest-stats { grid-template-columns: repeat(2, 1fr); }
}

/* ============ 公司简介增强样式 ============ */
.about-lead {
  font-weight: 600;
  color: var(--color-tiffany-deep, #0C8A9B);
  margin-top: 28px;
}

.about-list {
  max-width: 860px;
  margin: 8px auto 0;
  padding-left: 22px;
  color: var(--color-text);
  font-size: 16px;
  line-height: 1.85;
}

.about-list li {
  margin-bottom: 12px;
}

.about-list li::marker {
  color: var(--color-orange, #FF6F00);
  font-weight: 700;
}

.about-list strong {
  color: var(--color-tiffany-deep, #0C8A9B);
}

/* ============ 案例展示配图 ============ */
.case-card {
  display: flex;
  flex-direction: column;
}

.case-image {
  margin: 4px 0 14px;
  border-radius: 10px;
  overflow: hidden;
  background: var(--color-bg-soft, #F4F1E9);
  border: 1px solid var(--color-border, #E8E2D0);
  aspect-ratio: 4 / 3;
  display: flex;
  align-items: center;
  justify-content: center;
}

.case-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

/* ============ 核心团队（统一网格） ============ */
.team-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 18px;
}

.team-member {
  background: #fff;
  border: 1px solid var(--color-border, #E8E2D0);
  border-radius: 12px;
  padding: 16px 18px;
  transition: border-color 0.2s, transform 0.2s;
}

.team-member:hover {
  border-color: var(--color-tiffany-soft, rgba(168,220,214,0.7));
  transform: translateY(-2px);
}

.team-member.is-founder {
  border: 1px solid var(--color-orange, #FF6F00);
  background: linear-gradient(180deg, #FFF8E1 0%, #FFFFFF 82%);
  box-shadow: 0 4px 14px rgba(255,111,0,0.10);
}

.team-name {
  display: block;
  font-size: 15px;
  font-weight: 700;
  color: var(--color-tiffany-deep, #0C8A9B);
  margin-bottom: 10px;
}

.team-role {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-orange, #FF6F00);
  margin-left: 0.9em;
}

.team-member ul {
  list-style: none;
  margin: 0;
  padding: 0;
  color: var(--color-text);
  font-size: 14px;
  line-height: 1.85;
}

.team-member ul li {
  padding-left: 14px;
  position: relative;
}

.team-member ul li::before {
  content: "·";
  color: var(--color-tiffany-deep, #0C8A9B);
  position: absolute;
  left: 2px;
  font-weight: 700;
}

@media (max-width: 900px) {
  .team-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 600px) {
  .team-grid {
    grid-template-columns: 1fr;
  }
}

/* ============ 资质与成果 ============ */
/* ============ 资质与成果（上下堆叠，避免成果贴图后两栏失衡） ============ */
.qual-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 22px;
}

.qual-item {
  background: var(--color-bg-soft, #F4F1E9);
  border: 1px solid var(--color-border, #E8E2D0);
  border-radius: 10px;
  padding: 16px 18px;
}

.qual-tag {
  display: block;
  font-size: 15px;
  font-weight: 700;
  color: var(--color-tiffany-deep, #0C8A9B);
  margin-bottom: 8px;
}

.qual-item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--color-text);
}

.ach-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.ach-item {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 18px;
  align-items: center;
  padding: 16px 0;
  border-bottom: 1px dashed var(--color-border, #E8E2D0);
}

.ach-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.ach-media-col {
  min-width: 0;
}

.ach-media {
  height: 150px;
  border-radius: 10px;
  overflow: hidden;
  background: #ECE6D2;
}

.ach-carousel {
  position: relative;
  height: 100%;
}

.ach-media .carousel-viewport {
  height: 100%;
  border-radius: 10px;
  box-shadow: none;
}

.ach-media .carousel-track {
  height: 100%;
}

.ach-media .carousel-slide {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: repeating-linear-gradient(45deg, #F4F1E9, #F4F1E9 6px, #ECE6D2 6px, #ECE6D2 12px);
  border: 1px dashed #C9BFA1;
  box-sizing: border-box;
}

.ach-media .carousel-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.ach-media-col .carousel-dots {
  margin-top: 8px;
}

.ach-body {
  min-width: 0;
}

.ach-date {
  display: inline-block;
  font-weight: 700;
  color: var(--color-orange, #FF6F00);
  margin-right: 4px;
}

.ach-body p {
  margin: 6px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--color-text);
}

.image-placeholder {
  padding: 2px 10px;
  background: transparent;
  border: none;
  font-size: 12px;
  color: #8C8062;
  font-style: italic;
}

/* ============ 案例/成果响应式 ============ */
@media (max-width: 900px) {
  .qual-row {
    grid-template-columns: 1fr;
  }
  .ach-item {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .ach-media {
    height: 180px;
  }
}

/* ============ prefers-reduced-motion ============ */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition: none !important;
    animation: none !important;
  }

  .content-section {
    opacity: 1;
    transform: none;
  }
}

/* ===== v2 inline style block 2 ===== */
/* ===== v2 新增样式 ===== */
.hero-positioning {
  width: min(780px, 100%);
  margin: 0 auto;
  font-size: 17px;
  line-height: 2;
  color: #555555;
}

#business .business-card { scroll-margin-top: 96px; }
#contest { scroll-margin-top: 88px; }
.ai-badge {
  display: inline-block;
  margin: 4px 0 14px;
  padding: 3px 14px;
  border: 1px solid var(--color-tiffany-deep);
  border-radius: 999px;
  color: var(--color-tiffany-deep);
  font-size: 13px;
  line-height: 1.7;
}
.mf-qr-slot { text-align: center; }
.mf-qr-slot .qr-code { width: 132px; height: 132px; margin: 14px auto 0; }
.mf-qr-tip { margin: 8px 0 0; font-size: 13px; color: rgba(255, 255, 255, 0.82); }
.message-form select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.92);
  color: #1d2026;
  font-family: inherit;
  font-size: 15px;
}
.message-form select:focus {
  outline: none;
  border-color: var(--color-tiffany);
  box-shadow: 0 0 0 3px rgba(168, 220, 214, 0.25);
}
@media (max-width: 720px) {
  #contest { scroll-margin-top: 72px; }
}