* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
:root {
  --navy: #1b2a4a;
  --ink: #5b6577;
  --muted: #8b94a6;
  --blue: #2f6fdb;
  --line: #e8edf4;
  --card: #ffffff;
  --soft: #eef4fd;
  --bg: #f5f8fc;
}
body {
  font-family:
    -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Microsoft YaHei", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
}
a {
  color: var(--blue);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}
img {
  max-width: 100%;
  display: block;
}

/* ===== Breadcrumb ===== */
.ab-bread {
  max-width: 1200px;
  margin: 0 auto;
  padding: 16px 20px;
  font-size: 13px;
  color: var(--muted);
}
.ab-bread a {
  color: var(--muted);
  font-weight: 500;
}
.ab-bread a:hover {
  color: var(--blue);
}
.ab-bread span {
  margin: 0 6px;
}

/* ===== Hero(深色) ===== */
.ab-hero {
  background: var(--navy);
  padding: clamp(48px, 7vw, 80px) 20px clamp(40px, 6vw, 64px);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.ab-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url("https://www.sellbgp.com/web/my/myassets/banner.jpg")
    center/cover no-repeat;
  opacity: 0.18;
}
.ab-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(20, 28, 46, 0.6) 0%,
    rgba(20, 28, 46, 0.85) 100%
  );
}
.ab-hero__inner {
  max-width: 860px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}
.ab-hero__badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: var(--blue);
  background: rgba(47, 111, 219, 0.15);
  border: 1px solid rgba(47, 111, 219, 0.25);
  border-radius: 999px;
  padding: 5px 16px;
  margin-bottom: 20px;
  letter-spacing: 0.5px;
}
.ab-hero h1 {
  color: #fff;
  font-size: clamp(26px, 3.5vw, 40px);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 18px;
}
.ab-hero__desc {
  color: #aeb9cf;
  font-size: clamp(15px, 1.3vw, 17px);
  line-height: 1.8;
  margin-bottom: 28px;
}
.ab-hero__btns {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
}
.ab-hero__btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  border-radius: 8px;
  padding: 11px 24px;
  transition: background 0.15s;
}
.ab-hero__btn--primary {
  background: var(--blue);
  color: #fff;
}
.ab-hero__btn--primary:hover {
  background: #245fc4;
  text-decoration: none;
}
.ab-hero__btn--ghost {
  background: transparent;
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.25);
}
.ab-hero__btn--ghost:hover {
  border-color: #fff;
  background: rgba(255, 255, 255, 0.06);
  text-decoration: none;
}

/* ===== 数据条 ===== */
.ab-stats {
  background: var(--card);
  border-bottom: 1px solid var(--line);
  padding: 28px 20px;
}
.ab-stats__inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 16px 48px;
}
.ab-stats__item {
  text-align: center;
}
.ab-stats__num {
  font-size: clamp(24px, 2.5vw, 32px);
  font-weight: 700;
  color: var(--navy);
  line-height: 1.1;
}
.ab-stats__num span {
  font-size: 14px;
  font-weight: 500;
  color: var(--muted);
}
.ab-stats__label {
  font-size: 12.5px;
  color: var(--muted);
  margin-top: 4px;
}

/* ===== 通用板块 ===== */
.ab-section {
  padding: clamp(32px, 5vw, 52px) 20px;
}
.ab-section--alt {
  background: #f0f4fa;
}
.ab-section__inner {
  max-width: 1200px;
  margin: 0 auto;
}
.ab-section__head {
  margin-bottom: clamp(18px, 2.5vw, 28px);
}
.ab-section__title {
  color: var(--navy);
  font-size: clamp(20px, 2.4vw, 26px);
  font-weight: 700;
  line-height: 1.35;
  margin-bottom: 10px;
}
.ab-section__desc {
  color: var(--ink);
  font-size: 14.5px;
  line-height: 1.8;
  max-width: 800px;
}

/* 分组标签 */
.ab-label {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}
.ab-label__text {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--navy);
  white-space: nowrap;
}
.ab-label__text small {
  font-weight: 500;
  color: var(--muted);
  margin-left: 5px;
  font-size: 12px;
}
.ab-label__rule {
  flex: 1;
  height: 1px;
  background: var(--line);
}

/* ===== 卡片网格 ===== */
.ab-grid {
  display: grid;
  gap: 14px;
}
.ab-grid--3 {
  grid-template-columns: repeat(3, 1fr);
}
.ab-grid--2 {
  grid-template-columns: repeat(2, 1fr);
}
.ab-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 22px 20px;
  transition: border-color 0.15s;
}
.ab-card:hover {
  border-color: #bcd2f4;
}
.ab-card h3 {
  color: var(--navy);
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 8px;
}
.ab-card p {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--ink);
}

/* ===== 公司简介(两栏) ===== */
.ab-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: start;
}
.ab-intro__text {
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--ink);
}
.ab-intro__text p {
  margin-bottom: 16px;
}
.ab-intro__text p:last-child {
  margin-bottom: 0;
}
.ab-intro__info {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 24px;
}
.ab-intro__img {
  width: 100%;
  max-height: 320px;
  object-fit: cover;
  border-radius: 12px;
  margin-bottom: 24px;
  border: 1px solid var(--line);
}
.ab-intro__row {
  display: flex;
  justify-content: space-between;
  padding: 10px 0;
  border-bottom: 1px dashed var(--line);
  font-size: 13.5px;
}
.ab-intro__row:last-child {
  border-bottom: 0;
}
.ab-intro__row span {
  color: var(--muted);
}
.ab-intro__row b {
  color: var(--navy);
  font-weight: 500;
  text-align: right;
}

/* ===== 资质标签条 ===== */
.ab-certs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}
.ab-cert {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--navy);
  font-weight: 500;
  background: var(--soft);
  border: 1px solid #dce8f8;
  border-radius: 7px;
  padding: 8px 16px;
}
.ab-cert svg {
  width: 16px;
  height: 16px;
  stroke: var(--blue);
  fill: none;
  stroke-width: 1.8;
  flex: none;
}

/* ===== 节点紧凑行 ===== */
.ab-nodes {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 10px;
}
.ab-node {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 16px;
  text-align: center;
}
.ab-node__name {
  font-size: 14px;
  font-weight: 600;
  color: var(--navy);
  margin-bottom: 2px;
}
.ab-node__en {
  font-size: 11px;
  color: var(--muted);
}
.ab-node__ms {
  font-size: 20px;
  font-weight: 700;
  color: var(--navy);
  margin: 8px 0 2px;
}
.ab-node__ms small {
  font-size: 11px;
  font-weight: 500;
  color: var(--muted);
}
.ab-node__dc {
  font-size: 11.5px;
  color: var(--ink);
}

/* ===== 底部 CTA ===== */
.ab-cta {
  background: var(--navy);
  padding: clamp(32px, 4vw, 48px) 20px;
  text-align: center;
}
.ab-cta__inner {
  max-width: 700px;
  margin: 0 auto;
}
.ab-cta h2 {
  color: #fff;
  font-size: clamp(20px, 2.4vw, 26px);
  font-weight: 700;
  margin-bottom: 10px;
}
.ab-cta p {
  color: #aeb9cf;
  font-size: 14px;
  line-height: 1.7;
  margin-bottom: 24px;
}
.ab-cta__btns {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
}

@media (max-width: 860px) {
  .ab-intro {
    grid-template-columns: 1fr;
  }
  .ab-grid--3 {
    grid-template-columns: 1fr 1fr;
  }
  .ab-nodes {
    grid-template-columns: repeat(3, 1fr);
  }
}
@media (max-width: 520px) {
  .ab-grid--3,
  .ab-grid--2 {
    grid-template-columns: 1fr;
  }
  .ab-nodes {
    grid-template-columns: 1fr 1fr;
  }
}
@media (prefers-reduced-motion: reduce) {
  .ab-card,
  .ab-hero__btn {
    transition: none;
  }
}