/* ===== 设计变量 ===== */
:root {
  --clr-primary: #2B8A6E;
  --clr-primary-dark: #1F6B54;
  --clr-primary-wash: #E8F3EE;
  --clr-accent: #E89334;
  --clr-accent-wash: #FBE9D3;
  --clr-bg: #F8F6F1;
  --clr-card: #FFFFFF;
  --clr-text: #223B32;
  --clr-muted: #5C7168;
  --clr-line: #E4E0D8;
  --clr-online: #3DBB7A;
  --clr-danger: #E25C4A;
  --radius-card: 16px;
  --radius-btn: 999px;
  --radius-input: 10px;
  --shadow-card: 0 4px 16px rgba(43, 58, 50, .08);
  --shadow-card-hover: 0 12px 32px rgba(43, 58, 50, .14);
  --shadow-nav: 0 2px 12px rgba(43, 58, 50, .06);
  --section-pad: clamp(3rem, 7vw, 5.5rem) 0;
  --container: 76rem;
}

/* ===== Reset ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, sans-serif;
  background: var(--clr-bg);
  color: var(--clr-text);
  line-height: 1.75;
  font-feature-settings: "tnum";
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; height: auto; }
a { text-decoration: none; color: inherit; transition: color .2s ease; }
ul, ol { list-style: none; }
button, input, select, textarea { font-family: inherit; font-size: inherit; }
input:focus, select:focus, textarea:focus, button:focus { outline: none; }

/* ===== 容器 ===== */
.container { max-width: var(--container); margin: 0 auto; padding: 0 20px; }

/* ===== 滚动锚点补偿 ===== */
section[id] { scroll-margin-top: 84px; }

/* ===== 工具栏导航 ===== */
.toolbar-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: 64px;
  background: #fff;
  border-bottom: 1px solid var(--clr-line);
  box-shadow: var(--shadow-nav);
}
.nav-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 20px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.nav-logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--clr-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  flex-shrink: 0;
}
.nav-logo-icon svg { width: 20px; height: 20px; }
.nav-logo-text {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--clr-text);
  letter-spacing: .02em;
  white-space: nowrap;
}
.nav-logo:hover .nav-logo-text { opacity: .85; }
.nav-menu {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
  justify-content: center;
}
.nav-menu .menu-item {
  display: inline-block;
  padding: .38rem .9rem;
  border-radius: 999px;
  font-size: .92rem;
  color: var(--clr-muted);
  font-weight: 500;
  transition: all .2s ease;
  white-space: nowrap;
}
.nav-menu .menu-item:hover { background: var(--clr-primary-wash); color: var(--clr-primary); }
.nav-menu .menu-item.active { background: var(--clr-primary); color: #fff; }
.nav-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}
.online-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: .85rem;
  color: var(--clr-muted);
  white-space: nowrap;
}
.online-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--clr-online);
  box-shadow: 0 0 0 2px #fff, 0 0 0 4px rgba(61, 187, 122, .2);
  position: relative;
}
.online-dot::after {
  content: "";
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 1px solid rgba(61, 187, 122, .4);
  animation: pulse 2s ease infinite;
}
@keyframes pulse {
  0%, 100% { transform: scale(.9); opacity: .6; }
  50% { transform: scale(1.15); opacity: .2; }
}
.nav-bell {
  position: relative;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  color: var(--clr-muted);
  border: none;
  cursor: pointer;
  transition: background .2s ease;
}
.nav-bell:hover { background: var(--clr-primary-wash); color: var(--clr-primary); }
.nav-bell svg { width: 19px; height: 19px; }
.nav-bell .badge-dot {
  position: absolute;
  top: 6px;
  right: 7px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--clr-danger);
  border: 1.5px solid #fff;
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: .8rem 1.8rem;
  background: var(--clr-primary);
  color: #fff;
  border: none;
  border-radius: 999px;
  font-size: .95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all .2s ease;
  white-space: nowrap;
  line-height: 1.2;
}
.btn-primary:hover { background: var(--clr-primary-dark); transform: translateY(-2px); box-shadow: 0 8px 20px rgba(43, 138, 110, .3); }
.btn-primary:active { transform: scale(.97); }
.btn-primary:focus-visible { outline: 2px solid var(--clr-primary); outline-offset: 2px; }
.nav-cta { padding: .6rem 1.4rem; font-size: .9rem; }
.nav-burger {
  display: none;
  width: 40px;
  height: 40px;
  border: none;
  background: transparent;
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  border-radius: 8px;
}
.nav-burger:hover { background: var(--clr-primary-wash); }
.nav-burger span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--clr-text);
  border-radius: 2px;
  transition: all .25s ease;
}
.nav-burger.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-burger.open span:nth-child(2) { opacity: 0; }
.nav-burger.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
.mobile-nav {
  display: none;
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  background: #fff;
  border-bottom: 1px solid var(--clr-line);
  box-shadow: 0 8px 24px rgba(43, 58, 50, .08);
  padding: 12px 20px 20px;
  z-index: 99;
}
.mobile-nav .menu-item {
  display: block;
  padding: 14px 16px;
  border-radius: 12px;
  font-size: .95rem;
  color: var(--clr-text);
  font-weight: 500;
  transition: background .2s ease;
}
.mobile-nav .menu-item:hover { background: var(--clr-primary-wash); color: var(--clr-primary); }
.mobile-nav .menu-item.active { background: var(--clr-primary); color: #fff; }
.mobile-nav.show { display: block; }

/* ===== 按钮体系 ===== */
.btn-text {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--clr-primary);
  font-size: .95rem;
  font-weight: 600;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  transition: gap .2s ease;
}
.btn-text:hover { gap: 8px; }
.btn-text .arrow { transition: transform .2s ease; }
.btn-text:hover .arrow { transform: translateX(4px); }
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: .8rem 1.8rem;
  background: #fff;
  color: var(--clr-primary);
  border: 1.5px solid var(--clr-primary);
  border-radius: 999px;
  font-size: .95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all .2s ease;
}
.btn-secondary:hover { background: var(--clr-primary-wash); }
.btn-cta-large {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: 1rem 2.4rem;
  background: var(--clr-accent);
  color: #2E2A20;
  border: none;
  border-radius: 999px;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: all .2s ease;
}
.btn-cta-large:hover { background: #D97F1F; box-shadow: 0 6px 20px rgba(232, 147, 52, .35); transform: translateY(-2px); }
.btn-cta-large:focus-visible { outline: 2px solid var(--clr-accent); outline-offset: 2px; }

/* ===== Hero 首屏 ===== */
.hero {
  position: relative;
  background: var(--clr-bg);
  overflow: hidden;
  padding: 4.5rem 0 0;
}
.hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 120px;
  background: var(--clr-primary-wash);
  border-radius: 0 0 50% 50% / 12%;
  z-index: 0;
}
.hero-inner {
  position: relative;
  z-index: 1;
}
.hero-tag {
  display: inline-block;
  padding: .35rem 1rem;
  background: var(--clr-primary-wash);
  color: var(--clr-primary);
  border-radius: 999px;
  font-size: .85rem;
  font-weight: 600;
  margin-bottom: 1.4rem;
  letter-spacing: .02em;
}
.hero h1 {
  font-size: clamp(1.85rem, 3.4vw, 2.8rem);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--clr-text);
  margin-bottom: 1rem;
}
.hero h1 em { color: var(--clr-primary); font-style: normal; }
.hero-sub {
  font-size: 1.05rem;
  color: var(--clr-muted);
  line-height: 1.8;
  margin-bottom: 1.8rem;
  max-width: 32em;
}
.hero-actions {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  margin-bottom: 1.8rem;
}
.hero-trust {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  font-size: .85rem;
  color: var(--clr-muted);
}
.hero-trust-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.hero-trust-item svg { width: 16px; height: 16px; color: var(--clr-primary); }
.hero-visual {
  position: relative;
}
.hero-img-wrap {
  position: relative;
  border-radius: 24px;
  overflow: hidden;
  box-shadow: var(--shadow-card-hover);
}
.hero-img-wrap::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 70% 20%, rgba(43, 138, 110, .1), transparent 60%);
  pointer-events: none;
}
.hero-img-wrap img { width: 100%; height: 320px; object-fit: cover; border-radius: 24px; }
.hero-img-arc {
  position: absolute;
  bottom: -14px;
  right: -14px;
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background: var(--clr-accent-wash);
  z-index: -1;
}
.hero-float-cards {
  position: relative;
  z-index: 2;
  margin-top: 2.8rem;
  transform: translateY(1.5rem);
}
.hero-mini-card {
  background: #fff;
  border-radius: 16px;
  box-shadow: var(--shadow-card);
  padding: 14px 18px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: .87rem;
  font-weight: 500;
  color: var(--clr-text);
  transition: all .2s ease;
  height: 100%;
}
.hero-mini-card:hover { box-shadow: var(--shadow-card-hover); transform: translateY(-3px); }
.hero-mini-card .mini-icon {
  width: 32px;
  height: 32px;
  border-radius: 10px;
  background: var(--clr-primary-wash);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--clr-primary);
}
.hero-mini-card .mini-icon svg { width: 16px; height: 16px; }

/* ===== 区块通用 ===== */
.section { padding: var(--section-pad); }
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 2.5rem;
  flex-wrap: wrap;
}
.section-head h2 {
  font-size: clamp(1.35rem, 2.4vw, 1.85rem);
  font-weight: 700;
  line-height: 1.3;
  color: var(--clr-text);
  display: flex;
  align-items: center;
  gap: 12px;
}
.section-head h2::before {
  content: "";
  width: 40px;
  height: 8px;
  border-radius: 999px;
  background: var(--clr-primary);
  flex-shrink: 0;
}
.section-desc {
  font-size: .95rem;
  color: var(--clr-muted);
  max-width: 38em;
  line-height: 1.75;
  margin-top: .6rem;
  margin-left: 52px;
}

/* ===== 痛点区 ===== */
.pain-points { background: var(--clr-bg); padding: var(--section-pad); }
.pain-card {
  background: #fff;
  border-radius: 20px;
  padding: 1.8rem;
  box-shadow: var(--shadow-card);
  height: 100%;
  transition: all .2s ease;
  border: 1px solid transparent;
}
.pain-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-4px);
  border-color: rgba(43, 138, 110, .3);
}
.pain-icon {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--clr-primary-wash);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--clr-primary);
  margin-bottom: 1.1rem;
}
.pain-icon svg { width: 20px; height: 20px; }
.pain-card h3 {
  font-size: 1.08rem;
  font-weight: 600;
  color: var(--clr-text);
  margin-bottom: .5rem;
}
.pain-card p {
  font-size: .92rem;
  color: var(--clr-muted);
  line-height: 1.7;
}

/* ===== 解决方案 / 服务区 ===== */
.services {
  background: var(--clr-primary-wash);
  padding: var(--section-pad);
  position: relative;
}
.services::before, .services::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 12px;
  background: var(--clr-bg);
  border-radius: 0 0 12px 12px;
}
.services::before { top: 0; }
.services::after { bottom: 0; border-radius: 12px 12px 0 0; }
.service-card-large {
  background: #fff;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-card);
  height: 100%;
  transition: all .2s ease;
  position: relative;
  border: 1px solid transparent;
  display: flex;
  flex-direction: column;
}
.service-card-large:hover { box-shadow: var(--shadow-card-hover); transform: translateY(-4px); border-color: rgba(43, 138, 110, .3); }
.service-card-large .card-img { position: relative; overflow: hidden; }
.service-card-large .card-img img { width: 100%; height: 280px; object-fit: cover; }
.service-card-large .card-body { padding: 1.6rem; flex: 1; display: flex; flex-direction: column; }
.service-card-large h3 { font-size: 1.2rem; font-weight: 700; color: var(--clr-text); margin-bottom: .6rem; }
.service-card-large .tags { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: .9rem; }
.service-card-large p { font-size: .93rem; color: var(--clr-muted); line-height: 1.75; margin-bottom: 1.2rem; flex: 1; }
.ribbon {
  position: absolute;
  top: 14px;
  right: -8px;
  background: var(--clr-accent);
  color: #2E2A20;
  font-size: .8rem;
  font-weight: 600;
  padding: .25rem .9rem;
  border-radius: 6px 0 0 6px;
  transform: rotate(2deg);
  box-shadow: 0 2px 6px rgba(232, 147, 52, .3);
  z-index: 2;
}
.ribbon::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: -6px;
  border-left: 6px solid #C56E17;
  border-bottom: 6px solid transparent;
}
.tag {
  display: inline-block;
  padding: .16rem .6rem;
  background: var(--clr-primary-wash);
  color: var(--clr-primary);
  border-radius: 6px;
  font-size: .8rem;
  font-weight: 500;
}
.tag-accent { background: var(--clr-accent-wash); color: #8A5A1A; }
.service-card-small {
  background: #fff;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-card);
  border: 1px solid transparent;
  transition: all .2s ease;
  display: flex;
  flex-direction: column;
}
.service-card-small:hover { box-shadow: var(--shadow-card-hover); transform: translateY(-4px); border-color: rgba(43, 138, 110, .3); }
.service-card-small .card-img { position: relative; overflow: hidden; }
.service-card-small .card-img img { width: 100%; height: 120px; object-fit: cover; }
.service-card-small .card-body { padding: 1.1rem 1.3rem; }
.service-card-small h3 { font-size: 1rem; font-weight: 600; color: var(--clr-text); margin-bottom: .35rem; }
.service-card-small p { font-size: .87rem; color: var(--clr-muted); line-height: 1.65; }
.service-card-small .tags { display: flex; gap: 6px; flex-wrap: wrap; margin-top: .6rem; }
.service-stack { display: flex; flex-direction: column; gap: 24px; height: 100%; }

/* ===== 数据指标区 ===== */
.stats { background: #fff; padding: var(--section-pad); }
.stat-grid { margin-bottom: 2.5rem; }
.stat-item {
  text-align: center;
  padding: 1.2rem .8rem;
}
.stat-number {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  font-weight: 700;
  color: var(--clr-primary);
  line-height: 1.2;
  margin-bottom: .4rem;
}
.stat-label { font-size: .88rem; color: var(--clr-muted); }
.badges-row {
  display: flex;
  justify-content: center;
  gap: clamp(20px, 4vw, 56px);
  flex-wrap: wrap;
  margin-top: 1.5rem;
}
.badge-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}
.badge-circle {
  width: 88px;
  height: 88px;
  border-radius: 50%;
  background: #fff;
  border: 2px dashed var(--clr-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--clr-primary);
  transition: all .25s ease;
}
.badge-item:hover .badge-circle { border-style: solid; transform: rotate(2deg) scale(1.03); }
.badge-circle svg { width: 30px; height: 30px; }
.badge-text { font-size: .85rem; color: var(--clr-text); font-weight: 500; }

/* ===== 客户证言 ===== */
.testimonials {
  background: var(--clr-accent-wash);
  padding: var(--section-pad);
}
.testimonial-card {
  background: #fff;
  border-radius: 16px;
  padding: 1.8rem;
  box-shadow: var(--shadow-card);
  height: 100%;
  transition: all .2s ease;
  display: flex;
  flex-direction: column;
}
.testimonial-card.offset { margin-top: 24px; }
.testimonial-card:hover { box-shadow: var(--shadow-card-hover); transform: translateY(-4px); }
.stars { color: var(--clr-accent); font-size: .95rem; letter-spacing: 2px; margin-bottom: 1rem; }
.testimonial-card blockquote {
  font-size: .93rem;
  color: var(--clr-text);
  line-height: 1.75;
  margin-bottom: 1.2rem;
  flex: 1;
  border: none;
  padding: 0;
}
.t-user {
  display: flex;
  align-items: center;
  gap: 12px;
}
.t-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--clr-primary-wash);
  color: var(--clr-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .95rem;
  font-weight: 700;
  flex-shrink: 0;
}
.t-meta { display: flex; flex-direction: column; }
.t-name { font-size: .9rem; font-weight: 600; color: var(--clr-text); }
.t-tag { font-size: .78rem; color: var(--clr-muted); }

/* ===== FAQ ===== */
.faq { background: var(--clr-bg); padding: var(--section-pad); }
.faq-list { max-width: 46rem; }
.accordion { background: transparent; }
.accordion-item {
  background: #fff;
  border-radius: 16px !important;
  margin-bottom: 12px;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--clr-line) !important;
  overflow: hidden;
  transition: all .2s ease;
}
.accordion-item:hover { box-shadow: var(--shadow-card-hover); }
.accordion-item.is-active { border-color: rgba(43, 138, 110, .4) !important; }
.accordion-title {
  padding: 1.1rem 1.4rem;
  font-size: .98rem;
  font-weight: 600;
  color: var(--clr-text);
  background: #fff;
  position: relative;
  transition: background .2s ease;
  border-bottom: 0 !important;
}
.accordion-title:hover, .accordion-title:focus { background: var(--clr-primary-wash); color: var(--clr-primary); }
.accordion-title::before {
  content: "+";
  position: absolute;
  right: 1.4rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.3rem;
  font-weight: 400;
  color: var(--clr-primary);
  transition: transform .2s ease;
  line-height: 1;
}
.accordion-item.is-active .accordion-title::before { transform: translateY(-50%) rotate(45deg); }
.accordion-content {
  padding: 0 1.4rem 1.2rem;
  font-size: .95rem;
  color: var(--clr-muted);
  line-height: 1.75;
  background: #fff;
  border-top: 1px solid var(--clr-line);
}
.accordion-content p { margin-bottom: 0; }

/* ===== CTA ===== */
.cta-section {
  background: var(--clr-primary-dark);
  padding: var(--section-pad);
  position: relative;
  color: #fff;
}
.cta-section::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 12px;
  background: var(--clr-bg);
  border-radius: 0 0 12px 12px;
}
.cta-left h2 {
  font-size: clamp(1.5rem, 2.6vw, 2rem);
  font-weight: 700;
  margin-bottom: 1rem;
  line-height: 1.3;
}
.cta-left p {
  font-size: 1rem;
  color: rgba(255, 255, 255, .8);
  line-height: 1.8;
  margin-bottom: 1.8rem;
  max-width: 24em;
}
.cta-contact {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.05rem;
  color: #fff;
  margin-bottom: 12px;
}
.cta-contact svg { width: 18px; height: 18px; color: var(--clr-accent); }
.cta-form-card {
  background: #fff;
  border-radius: 16px;
  padding: 2rem;
  box-shadow: 0 12px 40px rgba(0, 0, 0, .18);
}
.cta-form-card .form-label {
  font-size: .85rem;
  font-weight: 600;
  color: var(--clr-text);
  margin-bottom: .35rem;
  display: block;
}
.form-input, .form-select {
  width: 100%;
  padding: .75rem 1rem;
  border: 1px solid var(--clr-line);
  border-radius: 10px;
  font-size: .95rem;
  color: var(--clr-text);
  background: #fff;
  margin-bottom: 1rem;
  transition: all .2s ease;
  appearance: auto;
}
.form-input:focus, .form-select:focus {
  border-color: var(--clr-primary);
  box-shadow: 0 0 0 2px rgba(43, 138, 110, .15);
  outline: none;
}
.form-input::placeholder { color: var(--clr-muted); }
.form-select { cursor: pointer; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' fill='none' stroke='%235C7168' stroke-width='2' viewBox='0 0 24 24'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 14px center; padding-right: 40px; }
.form-note {
  font-size: .8rem;
  color: rgba(31, 45, 40, .65);
  margin-top: .8rem;
  text-align: center;
}

/* ===== 页脚 ===== */
.site-footer {
  background: #1E342C;
  color: #fff;
  padding: 4rem 0 0;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 1rem;
}
.footer-logo {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255, 255, 255, .15);
  border: 1px solid rgba(255, 255, 255, .3);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
}
.footer-logo svg { width: 18px; height: 18px; }
.footer-brand-text {
  font-size: 1.05rem;
  font-weight: 700;
  color: #fff;
}
.footer-desc {
  font-size: .88rem;
  color: rgba(255, 255, 255, .7);
  line-height: 1.7;
  max-width: 20em;
  margin-bottom: 1.2rem;
}
.footer-online {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: .82rem;
  color: rgba(255, 255, 255, .75);
}
.footer-online .online-dot { width: 6px; height: 6px; }
.footer-title {
  font-size: .95rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 1rem;
}
.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-links a {
  font-size: .88rem;
  color: rgba(255, 255, 255, .75);
  transition: color .2s ease;
}
.footer-links a:hover { color: #fff; }
.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: .88rem;
  color: rgba(255, 255, 255, .75);
  line-height: 1.6;
}
.footer-contact-item svg { width: 16px; height: 16px; flex-shrink: 0; margin-top: 4px; color: var(--clr-accent); }
.footer-bottom {
  margin-top: 3rem;
  border-top: 1px solid rgba(255, 255, 255, .12);
  padding: 1.4rem 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}
.footer-copy {
  font-size: .82rem;
  color: rgba(255, 255, 255, .6);
}
.footer-legal {
  display: flex;
  gap: 16px;
}
.footer-legal a {
  font-size: .82rem;
  color: rgba(255, 255, 255, .6);
  transition: color .2s ease;
}
.footer-legal a:hover { color: #fff; }

/* ===== 动画 ===== */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}
.hero-inner { animation: fadeIn .5s ease; }

/* ===== 响应式 ===== */
@media screen and (max-width: 63.9375em) {
  .hero { padding-top: 3.5rem; }
  .hero-visual { margin-top: 2rem; }
  .hero-img-wrap img { height: 260px; }
  .service-card-large .card-img img { height: 220px; }
  .testimonial-card.offset { margin-top: 0; }
  .cta-section .cta-form-card { margin-top: 2rem; }
}

@media screen and (max-width: 39.9375em) {
  .nav-menu { display: none; }
  .nav-burger { display: flex; }
  .online-status span.online-text { display: none; }
  .nav-cta { padding: .55rem 1.1rem; font-size: .85rem; }
  .nav-bell { display: none; }
  .hero { padding-top: 2.5rem; }
  .hero::before { height: 80px; border-radius: 0 0 50% 50% / 8%; }
  .hero h1 { font-size: 1.6rem; }
  .hero-sub { font-size: .95rem; }
  .hero-actions { gap: 14px; }
  .hero-actions .btn-primary { width: 100%; }
  .hero-trust { gap: 14px; font-size: .8rem; }
  .hero-img-wrap img { height: 200px; }
  .hero-mini-card { padding: 10px 12px; font-size: .78rem; }
  .hero-mini-card .mini-icon { width: 26px; height: 26px; }
  .hero-mini-card .mini-icon svg { width: 13px; height: 13px; }
  .section-head { flex-direction: column; align-items: flex-start; gap: 12px; }
  .section-desc { margin-left: 52px; }
  .service-card-large .card-img img { height: 180px; }
  .service-card-small .card-img img { height: 100px; }
  .service-stack { gap: 16px; }
  .stat-number { font-size: 1.7rem; }
  .badges-row { gap: 20px; }
  .badge-circle { width: 72px; height: 72px; }
  .badge-circle svg { width: 24px; height: 24px; }
  .testimonial-card { padding: 1.4rem; }
  .accordion-title { padding: 1rem 3rem 1rem 1.2rem; font-size: .92rem; }
  .accordion-content { padding: 0 1.2rem 1rem; font-size: .88rem; }
  .cta-form-card { padding: 1.5rem; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .footer-legal { justify-content: center; }
  .footer-contact-item { font-size: .82rem; }
}

@media screen and (max-width: 520px) {
  .hero-float-cards .hero-mini-card { flex-direction: column; text-align: center; padding: 10px 8px; }
  .nav-logo-text { font-size: .95rem; }
  .nav-cta { padding: .5rem .9rem; font-size: .8rem; }
  .hero-trust { gap: 10px; }
}