/* ============================================
   上海广顺企业咨询有限公司 — 主样式文件
   ============================================ */

:root {
  --color-primary: #1A3A6B;
  --color-primary-light: #2A5090;
  --color-primary-dark: #0F2547;
  --color-accent: #C9A961;
  --color-accent-light: #D4B878;

  --color-white: #FFFFFF;
  --color-bg: #F8F9FC;
  --color-bg-gray: #F0F2F7;
  --color-border: #E5E7EB;
  --color-border-light: #EEF0F5;

  --color-text: #1A1A1A;
  --color-text-secondary: #4A4A4A;
  --color-text-muted: #8B8B8B;
  --color-text-light: #B0B0B0;

  --font-title: 'Noto Serif SC', 'SimSun', serif;
  --font-body: 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
  --font-en: 'Playfair Display', Georgia, serif;

  --max-width: 1280px;
  --header-height: 85px;
  --topbar-height: 36px;

  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --duration: 0.3s;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.8;
  color: var(--color-text);
  background: var(--color-white);
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; transition: color var(--duration) var(--ease); }
img { max-width: 100%; display: block; }
ul { list-style: none; }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }

.container { max-width: var(--max-width); margin: 0 auto; padding: 0 40px; }
.section { padding: 80px 0; }

.section-title {
  text-align: center;
  margin-bottom: 50px;
}
.section-title h2 {
  font-family: var(--font-title);
  font-size: 36px;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 10px;
  letter-spacing: 2px;
}
.section-title p {
  color: var(--color-text-muted);
  font-size: 15px;
}
.section-title__en {
  font-family: var(--font-en);
  font-size: 13px;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 3px;
  margin-bottom: 8px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 32px;
  font-size: 15px;
  font-weight: 500;
  border-radius: 2px;
  transition: all var(--duration) var(--ease);
  cursor: pointer;
  letter-spacing: 1px;
}
.btn--primary { background: var(--color-primary); color: var(--color-white); border: 1px solid var(--color-primary); }
.btn--primary:hover { background: var(--color-primary-light); border-color: var(--color-primary-light); }
.btn--accent { background: var(--color-accent); color: var(--color-white); border: 1px solid var(--color-accent); }
.btn--accent:hover { background: var(--color-accent-light); border-color: var(--color-accent-light); }
.btn--outline { background: transparent; color: var(--color-primary); border: 1px solid var(--color-primary); }
.btn--outline:hover { background: var(--color-primary); color: var(--color-white); }
.btn--white { background: transparent; color: var(--color-white); border: 1px solid rgba(255,255,255,0.6); }
.btn--white:hover { background: var(--color-white); color: var(--color-primary); }

/* ===== 顶部信息栏 ===== */
.topbar {
  background: var(--color-primary-dark);
  color: rgba(255,255,255,0.8);
  font-size: 13px;
  height: var(--topbar-height);
  display: flex;
  align-items: center;
}
.topbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.topbar__left { display: flex; gap: 28px; align-items: center; }
.topbar__item { display: flex; align-items: center; gap: 6px; }
.topbar__item svg { width: 14px; height: 14px; fill: currentColor; }
.topbar__right { display: flex; gap: 16px; align-items: center; }
.topbar__right a { color: rgba(255,255,255,0.8); }
.topbar__right a:hover { color: var(--color-accent); }

@media (max-width: 768px) { .topbar { display: none; } }

/* ===== 主导航 ===== */
.header {
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border-light);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}
.header__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 40px;
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo { display: flex; align-items: center; gap: 14px; }
.logo__mark {
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  font-family: var(--font-title);
  font-size: 26px;
  color: var(--color-accent);
  font-weight: 600;
}
.logo__text h1 {
  font-family: var(--font-title);
  font-size: 22px;
  font-weight: 600;
  color: var(--color-primary);
  letter-spacing: 2px;
  line-height: 1.2;
}
.logo__text span {
  font-family: var(--font-en);
  font-size: 10px;
  color: var(--color-text-muted);
  letter-spacing: 2px;
  text-transform: uppercase;
}

.nav { display: flex; gap: 2px; }
.nav > li { position: relative; }
.nav > li > a {
  display: block;
  padding: 0 18px;
  line-height: var(--header-height);
  font-size: 16px;
  font-weight: 500;
  color: var(--color-text);
  transition: color var(--duration) var(--ease);
  position: relative;
}
.nav > li > a:hover,
.nav > li.is-active > a { color: var(--color-primary); }
.nav > li.is-active > a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 36px;
  height: 3px;
  background: var(--color-accent);
  border-radius: 2px;
}

.submenu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 180px;
  background: var(--color-white);
  box-shadow: 0 8px 24px rgba(26,58,107,0.12);
  border-top: 2px solid var(--color-accent);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--duration) var(--ease);
  z-index: 10;
}
.nav > li:hover .submenu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.submenu li a {
  display: block;
  padding: 12px 20px;
  font-size: 14px;
  color: var(--color-text-secondary);
  border-bottom: 1px solid var(--color-border-light);
  transition: all var(--duration) var(--ease);
}
.submenu li:last-child a { border-bottom: none; }
.submenu li a:hover {
  color: var(--color-primary);
  background: var(--color-bg);
  padding-left: 26px;
}

.header__actions { display: flex; align-items: center; gap: 16px; }
.search-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg);
  transition: all var(--duration) var(--ease);
  color: var(--color-text-secondary);
}
.search-btn:hover { background: var(--color-primary); color: var(--color-white); }
.search-btn svg { width: 18px; height: 18px; fill: currentColor; }

.mobile-menu-btn {
  display: none;
  width: 40px;
  height: 40px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
}
.mobile-menu-btn span {
  width: 22px;
  height: 2px;
  background: var(--color-primary);
  transition: all var(--duration) var(--ease);
}

@media (max-width: 1024px) {
  .nav { display: none; }
  .mobile-menu-btn { display: flex; }
  .header__inner { padding: 0 20px; }
  .container { padding: 0 20px; }
}

.mobile-nav {
  display: none;
  background: var(--color-white);
  border-top: 1px solid var(--color-border);
}
.mobile-nav.is-open { display: block; }
.mobile-nav a {
  display: block;
  padding: 14px 20px;
  font-size: 15px;
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border-light);
}
.mobile-nav a:hover { color: var(--color-primary); background: var(--color-bg); }

/* ===== Banner轮播 ===== */
.banner {
  position: relative;
  width: 100%;
  height: 560px;
  overflow: hidden;
}
.banner__slides {
  position: relative;
  width: 100%;
  height: 100%;
}
.banner__slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 0.8s var(--ease);
  pointer-events: none;
}
.banner__slide.is-active {
  opacity: 1;
  pointer-events: auto;
}
.banner__img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.banner__overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(26,58,107,0.75) 0%, rgba(26,58,107,0.35) 100%);
}
.banner__content {
  position: relative;
  z-index: 2;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 40px;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  color: var(--color-white);
}
.banner__tag {
  font-family: var(--font-en);
  font-size: 13px;
  letter-spacing: 4px;
  color: var(--color-accent);
  text-transform: uppercase;
  margin-bottom: 20px;
}
.banner__title {
  font-family: var(--font-title);
  font-size: 50px;
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 20px;
  max-width: 680px;
  letter-spacing: 2px;
}
.banner__subtitle {
  font-size: 17px;
  line-height: 1.8;
  opacity: 0.9;
  max-width: 540px;
  margin-bottom: 36px;
}
.banner__actions { display: flex; gap: 16px; flex-wrap: wrap; }

.banner__arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.3);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
  transition: all var(--duration) var(--ease);
}
.banner__arrow:hover { background: var(--color-accent); border-color: var(--color-accent); }
.banner__arrow svg { width: 20px; height: 20px; stroke: currentColor; fill: none; stroke-width: 2; }
.banner__arrow--prev { left: 32px; }
.banner__arrow--next { right: 32px; }

.banner__dots {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 12px;
  z-index: 10;
}
.banner__dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: rgba(255,255,255,0.4);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--duration) var(--ease);
}
.banner__dot.is-active {
  background: var(--color-accent);
  border-color: var(--color-white);
  transform: scale(1.2);
}

@media (max-width: 768px) {
  .banner { height: 400px; }
  .banner__title { font-size: 30px; }
  .banner__subtitle { font-size: 14px; }
  .banner__content { padding: 0 20px; }
  .banner__arrow { display: none; }
}

/* ===== 快速服务入口 ===== */
.quick-services {
  position: relative;
  z-index: 5;
  margin-top: -50px;
}
.quick-services__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--color-border);
  border-radius: 4px;
  overflow: hidden;
  box-shadow: 0 10px 40px rgba(26,58,107,0.1);
}
.quick-service {
  background: var(--color-white);
  padding: 28px 24px;
  text-align: center;
  transition: all var(--duration) var(--ease);
  cursor: pointer;
}
.quick-service:hover {
  background: var(--color-primary);
  transform: translateY(-4px);
}
.quick-service__icon {
  width: 52px;
  height: 52px;
  margin: 0 auto 14px;
  background: var(--color-accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--duration) var(--ease);
}
.quick-service__icon svg { width: 26px; height: 26px; fill: var(--color-white); }
.quick-service h3 {
  font-family: var(--font-title);
  font-size: 17px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 4px;
  transition: color var(--duration) var(--ease);
}
.quick-service p {
  font-size: 13px;
  color: var(--color-text-muted);
  transition: color var(--duration) var(--ease);
}
.quick-service:hover h3 { color: var(--color-white); }
.quick-service:hover p { color: rgba(255,255,255,0.7); }
.quick-service:hover .quick-service__icon { background: var(--color-accent-light); }

@media (max-width: 768px) {
  .quick-services { margin-top: -30px; }
  .quick-services__grid { grid-template-columns: repeat(2, 1fr); }
}

/* ===== 关于我们 ===== */
.about { background: var(--color-white); }
.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.about__images { position: relative; }
.about__img-main {
  width: 100%;
  aspect-ratio: 4/3;
  background: linear-gradient(135deg, #e0e8f5 0%, #c8d4e8 100%);
  border-radius: 4px;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}
.about__img-main::after {
  content: '';
  position: absolute;
  inset: 20px;
  border: 1px solid rgba(26,58,107,0.2);
  border-radius: 2px;
}
.about__img-sub {
  position: absolute;
  bottom: -30px;
  right: -30px;
  width: 160px;
  height: 160px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  color: var(--color-white);
  text-align: center;
}
.about__img-sub strong {
  font-family: var(--font-title);
  font-size: 38px;
  font-weight: 600;
  line-height: 1;
  color: var(--color-accent);
}
.about__img-sub span {
  font-size: 13px;
  margin-top: 6px;
  letter-spacing: 1px;
}

.about__content .section-title {
  text-align: left;
  margin-bottom: 20px;
}
.about__lead {
  font-size: 17px;
  color: var(--color-text-secondary);
  line-height: 1.9;
  margin-bottom: 20px;
}
.about__desc {
  font-size: 15px;
  color: var(--color-text-muted);
  line-height: 1.9;
  margin-bottom: 28px;
}
.about__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  padding-top: 28px;
  border-top: 1px solid var(--color-border);
  margin-bottom: 28px;
}
.about__stat strong {
  display: block;
  font-family: var(--font-title);
  font-size: 34px;
  font-weight: 600;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: 8px;
}
.about__stat span {
  font-size: 14px;
  color: var(--color-text-muted);
}

@media (max-width: 900px) {
  .about__grid { grid-template-columns: 1fr; gap: 40px; }
  .about__img-sub { display: none; }
}

/* ===== 服务领域 ===== */
.services { background: var(--color-bg); }
.services__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.service-card {
  background: var(--color-white);
  border-radius: 4px;
  overflow: hidden;
  transition: all var(--duration) var(--ease);
  border: 1px solid var(--color-border-light);
}
.service-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 32px rgba(26,58,107,0.12);
}
.service-card__img {
  height: 180px;
  background: linear-gradient(135deg, #e0e8f5 0%, #c8d4e8 100%);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.service-card__image {
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.service-detail__image-wrapper {
  margin: 20px 0;
  text-align: center;
}
.service-detail__image {
  max-width: 100%;
  max-height: 300px;
  object-fit: contain;
  border-radius: 8px;
}
.service-card__icon {
  width: 56px;
  height: 56px;
  background: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(26,58,107,0.1);
}
.service-card__icon svg { width: 28px; height: 28px; fill: var(--color-primary); }
.service-card__body { padding: 24px; }
.service-card h3 {
  font-family: var(--font-title);
  font-size: 19px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 10px;
}
.service-card p {
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: 16px;
}
.service-card__more {
  font-size: 14px;
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-weight: 500;
}
.service-card__more::after {
  content: '→';
  transition: transform var(--duration) var(--ease);
}
.service-card:hover .service-card__more::after { transform: translateX(4px); }

@media (max-width: 1024px) { .services__grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .services__grid { grid-template-columns: 1fr; } }

/* ===== 为什么选择我们 ===== */
.why-us { background: var(--color-white); }
.why-us__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
}
.why-item {
  text-align: center;
  padding: 30px 20px;
}
.why-item__num {
  font-family: var(--font-en);
  font-size: 48px;
  font-weight: 600;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: 16px;
  opacity: 0.6;
}
.why-item h4 {
  font-family: var(--font-title);
  font-size: 18px;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 10px;
}
.why-item p {
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.8;
}

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

/* ===== 客户案例 ===== */
.cases { background: var(--color-bg); }
.cases__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.case-card {
  background: var(--color-white);
  border-radius: 4px;
  overflow: hidden;
  transition: all var(--duration) var(--ease);
  border: 1px solid var(--color-border-light);
  cursor: pointer;
}
.case-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 32px rgba(26,58,107,0.12);
}
.case-card__img {
  height: 200px;
  background: linear-gradient(135deg, #d4e0f0 0%, #b0c4de 100%);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}
.case-card__tag {
  position: absolute;
  top: 16px;
  left: 16px;
  padding: 4px 12px;
  background: var(--color-accent);
  color: var(--color-white);
  font-size: 12px;
  border-radius: 2px;
}
.case-card__body { padding: 24px; }
.case-card h4 {
  font-family: var(--font-title);
  font-size: 17px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 10px;
}
.case-card p {
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: 12px;
}
.case-card__client {
  font-size: 13px;
  color: var(--color-primary);
  font-weight: 500;
}

@media (max-width: 900px) { .cases__grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .cases__grid { grid-template-columns: 1fr; } }

/* ===== 新闻中心 ===== */
.news { background: var(--color-white); }
.news__grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 48px;
}
.news__main {
  position: relative;
  overflow: hidden;
  border-radius: 4px;
}
.news__main-img {
  width: 100%;
  aspect-ratio: 16/10;
  background: linear-gradient(135deg, #d4e0f0 0%, #a0b8d8 100%);
  position: relative;
}
.news__main-content {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 36px 28px 28px;
  background: linear-gradient(transparent, rgba(26,58,107,0.85));
  color: var(--color-white);
}
.news__main-tag {
  display: inline-block;
  padding: 4px 12px;
  background: var(--color-accent);
  color: var(--color-white);
  font-size: 12px;
  border-radius: 2px;
  margin-bottom: 12px;
}
.news__main-title {
  font-family: var(--font-title);
  font-size: 20px;
  font-weight: 600;
  line-height: 1.5;
  margin-bottom: 8px;
}
.news__main-date { font-size: 13px; opacity: 0.8; }

.news__list {
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.news-item {
  display: flex;
  gap: 16px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--color-border-light);
  cursor: pointer;
  transition: all var(--duration) var(--ease);
}
.news-item:last-child { border-bottom: none; padding-bottom: 0; }
.news-item:hover { padding-left: 8px; }
.news-item__date {
  flex-shrink: 0;
  width: 68px;
  text-align: center;
  padding-top: 2px;
}
.news-item__date strong {
  display: block;
  font-family: var(--font-title);
  font-size: 26px;
  font-weight: 600;
  color: var(--color-primary);
  line-height: 1;
}
.news-item__date span {
  font-size: 12px;
  color: var(--color-text-muted);
}
.news-item__content h4 {
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text);
  line-height: 1.6;
  margin-bottom: 6px;
  transition: color var(--duration) var(--ease);
}
.news-item:hover .news-item__content h4 { color: var(--color-primary); }
.news-item__content p {
  font-size: 13px;
  color: var(--color-text-muted);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-item__img {
  flex-shrink: 0;
  width: 80px;
  height: 60px;
  border-radius: 4px;
  background-color: var(--color-border-light);
}

@media (max-width: 900px) { .news__grid { grid-template-columns: 1fr; } }

/* ===== 合作伙伴 ===== */
.partners {
  background: var(--color-bg);
  padding: 60px 0;
}
.partners__title { text-align: center; margin-bottom: 36px; }
.partners__title h3 {
  font-family: var(--font-title);
  font-size: 22px;
  color: var(--color-primary);
  font-weight: 600;
  letter-spacing: 2px;
}
.partners__grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 1px;
  background: var(--color-border);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  overflow: hidden;
}
.partner-item {
  background: var(--color-white);
  height: 90px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-title);
  font-size: 15px;
  color: var(--color-text-muted);
  font-weight: 500;
  transition: all var(--duration) var(--ease);
  cursor: pointer;
}
.partner-item:hover {
  background: var(--color-primary);
  color: var(--color-white);
}

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

/* ===== CTA ===== */
.cta-band {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  padding: 56px 0;
  color: var(--color-white);
  position: relative;
  overflow: hidden;
}
.cta-band::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(201,169,97,0.15) 0%, transparent 70%);
  border-radius: 50%;
  transform: translate(30%, -50%);
}
.cta-band .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 40px;
  flex-wrap: wrap;
  position: relative;
  z-index: 2;
}
.cta-band h3 {
  font-family: var(--font-title);
  font-size: 26px;
  font-weight: 600;
  letter-spacing: 2px;
  margin-bottom: 6px;
}
.cta-band p { font-size: 15px; opacity: 0.8; }

/* ===== 页脚 ===== */
.footer {
  background: #0E1F3A;
  color: rgba(255,255,255,0.7);
  padding-top: 64px;
}
.footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.footer__brand { padding-right: 20px; }
.footer__logo {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
}
.footer__logo-mark {
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-accent));
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-title);
  font-size: 20px;
  color: var(--color-white);
  font-weight: 600;
}
.footer__logo-text h4 {
  font-family: var(--font-title);
  font-size: 18px;
  color: var(--color-white);
  font-weight: 600;
  letter-spacing: 2px;
}
.footer__logo-text span {
  font-size: 10px;
  letter-spacing: 2px;
  color: rgba(255,255,255,0.5);
}
.footer__intro {
  font-size: 14px;
  line-height: 1.8;
  margin-bottom: 18px;
}
.footer__contact {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 13px;
}
.footer__contact li { display: flex; align-items: center; gap: 8px; }

.footer__col h4 {
  font-size: 16px;
  color: var(--color-white);
  font-weight: 500;
  margin-bottom: 20px;
  position: relative;
  padding-bottom: 10px;
}
.footer__col h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 28px;
  height: 2px;
  background: var(--color-accent);
}
.footer__col ul { display: flex; flex-direction: column; gap: 10px; }
.footer__col a {
  font-size: 14px;
  color: rgba(255,255,255,0.7);
  transition: color var(--duration) var(--ease);
}
.footer__col a:hover { color: var(--color-accent); padding-left: 4px; }

.footer__qrcode-col { text-align: center; }
.footer__qrcode {
  width: 90px;
  height: 90px;
  background: var(--color-white);
  border-radius: 4px;
  margin: 0 auto 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  color: var(--color-text-muted);
}
.footer__qrcode-col p { font-size: 12px; }

.footer__bottom {
  padding: 18px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255,255,255,0.5);
}

@media (max-width: 1024px) {
  .footer__grid { grid-template-columns: repeat(2, 1fr); }
  .footer__qrcode-col { display: none; }
}
@media (max-width: 600px) { .footer__grid { grid-template-columns: 1fr; } }

/* ===== 内页通用 ===== */
.page-banner {
  height: 300px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  position: relative;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.page-banner::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  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='0.03'%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");
}
.page-banner .container {
  position: relative;
  z-index: 2;
  color: var(--color-white);
}
.page-banner h1 {
  font-family: var(--font-title);
  font-size: 38px;
  font-weight: 600;
  letter-spacing: 3px;
  margin-bottom: 8px;
}
.page-banner p { font-size: 15px; opacity: 0.8; letter-spacing: 1px; }
.breadcrumb {
  font-size: 13px;
  margin-top: 14px;
  opacity: 0.7;
}
.breadcrumb a { color: rgba(255,255,255,0.8); }
.breadcrumb span { margin: 0 8px; }

/* 侧边栏布局 */
.page-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 50px;
  align-items: start;
}
.sidebar { position: sticky; top: 120px; }
.sidebar__title {
  background: var(--color-primary);
  color: var(--color-white);
  padding: 22px 18px;
  border-radius: 4px 4px 0 0;
}
.sidebar__title h3 {
  font-family: var(--font-title);
  font-size: 20px;
  font-weight: 600;
  letter-spacing: 2px;
}
.sidebar__title span {
  font-family: var(--font-en);
  font-size: 11px;
  opacity: 0.7;
  letter-spacing: 2px;
  text-transform: uppercase;
}
.sidebar__menu {
  background: var(--color-bg-gray);
  border-radius: 0 0 4px 4px;
  overflow: hidden;
}
.sidebar__menu a {
  display: block;
  padding: 14px 18px;
  font-size: 15px;
  color: var(--color-text-secondary);
  border-bottom: 1px solid var(--color-border-light);
  transition: all var(--duration) var(--ease);
}
.sidebar__menu a:last-child { border-bottom: none; }
.sidebar__menu a:hover,
.sidebar__menu a.is-active {
  background: var(--color-white);
  color: var(--color-primary);
  padding-left: 24px;
  border-left: 3px solid var(--color-accent);
}

@media (max-width: 900px) {
  .page-layout { grid-template-columns: 1fr; }
  .sidebar { position: static; }
}

.content-block { margin-bottom: 48px; }
.content-block h2 {
  font-family: var(--font-title);
  font-size: 26px;
  color: var(--color-primary);
  font-weight: 600;
  margin-bottom: 18px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--color-accent);
  display: inline-block;
}
.content-block h3 {
  font-family: var(--font-title);
  font-size: 19px;
  color: var(--color-text);
  font-weight: 600;
  margin: 22px 0 10px;
}
.content-block p {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 2;
  margin-bottom: 14px;
}

/* 动画 */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

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

/* ============================================
   FAQ 常见问题页面
   ============================================ */
.faq-intro {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 48px;
  color: var(--color-text-secondary);
  font-size: 16px;
  line-height: 1.8;
}

.faq-list {
  max-width: 900px;
  margin: 0 auto;
}

.faq-group {
  margin-bottom: 40px;
}

.faq-group__title {
  font-size: 20px;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--color-accent);
  display: inline-block;
}

.faq-item {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  margin-bottom: 12px;
  overflow: hidden;
  transition: box-shadow 0.3s ease, border-color 0.3s ease;
}

.faq-item:hover {
  border-color: var(--color-primary-light);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
}

.faq-item.is-open {
  border-color: var(--color-primary-light);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
}

.faq-item__question {
  display: flex;
  align-items: center;
  padding: 18px 24px;
  cursor: pointer;
  user-select: none;
  gap: 14px;
}

.faq-item__q {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  background: var(--color-primary);
  color: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 600;
}

.faq-item__text {
  flex: 1;
  font-size: 16px;
  font-weight: 500;
  color: var(--color-text);
}

.faq-item__icon {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  color: var(--color-text-muted);
  transition: transform 0.3s ease, color 0.3s ease;
}

.faq-item__icon svg {
  width: 100%;
  height: 100%;
  fill: currentColor;
}

.faq-item.is-open .faq-item__icon {
  transform: rotate(180deg);
  color: var(--color-primary);
}

.faq-item__answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}

.faq-item.is-open .faq-item__answer {
  max-height: 600px;
}

.faq-item__answer p {
  padding: 0 24px 20px 70px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--color-text-secondary);
}

.faq-contact-cta {
  text-align: center;
  margin-top: 60px;
  padding: 48px 40px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  border-radius: 12px;
  color: var(--color-white);
}

.faq-contact-cta h3 {
  font-size: 22px;
  margin-bottom: 8px;
  color: var(--color-white);
}

.faq-contact-cta p {
  font-size: 15px;
  opacity: 0.9;
  margin-bottom: 24px;
}

.faq-loading, .faq-empty {
  text-align: center;
  padding: 48px;
  color: var(--color-text-muted);
  font-size: 15px;
}

@media (max-width: 768px) {
  .faq-intro { margin-bottom: 32px; font-size: 14px; }
  .faq-group { margin-bottom: 28px; }
  .faq-group__title { font-size: 17px; }
  .faq-item__question { padding: 14px 16px; gap: 10px; }
  .faq-item__q { width: 28px; height: 28px; font-size: 12px; }
  .faq-item__text { font-size: 14px; }
  .faq-item__answer p { padding: 0 16px 16px 54px; font-size: 13px; }
  .faq-contact-cta { padding: 28px 20px; margin-top: 40px; }
  .faq-contact-cta h3 { font-size: 18px; }
}