/**
 * 关于我们 — Figma 0:2 · 1920×5929
 * 真实文字 + 分层资源，无整页贴图
 */

:root {
  --color-primary: #196df4;
  --color-text: #000000;
  --color-muted: #6e6d6d;
  --color-navy: #002a8a;
  --color-white: #ffffff;
  --font: "SimHei", "Heiti SC", "STHeiti", "Microsoft YaHei", sans-serif;
  --scale: calc(100vw / 1920px);
}

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

html { scroll-behavior: smooth; background: #f9fbfe; }

body {
  font-family: var(--font);
  color: var(--color-text);
  background: #f9fbfe;
  overflow-x: hidden;
}

img { display: block; max-width: none; }
a { color: inherit; text-decoration: none; }
button { font: inherit; border: none; background: none; cursor: pointer; color: inherit; }
ol, ul { list-style: none; }

.viewport {
  width: 100vw;
  margin: 0;
  height: calc(5929px * var(--scale));
  overflow: hidden;
  position: relative;
  background: #f9fbfe;
}

.canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 1920px;
  height: 5929px;
  transform: scale(var(--scale));
  transform-origin: top left;
  background: #f9fbfe;
}

/* —— 通用区块标题 —— */
.sec-head {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  z-index: 2;
}

.sec-title {
  font-size: 43.332px; /* 72.22 × 1920/3200，对齐小推车 */
  line-height: 1.45;
  font-weight: 700;
  color: var(--color-text);
  white-space: nowrap;
}

.sec-line {
  display: block;
  width: 61.2px; /* 102 × 1920/3200 */
  height: auto;
  margin: 7.68px auto 15.36px; /* 0.4% / 0.8% × 1920 */
}

.sec-sub {
  font-size: 23.333px; /* 38.888 × 1920/3200 */
  line-height: 1.45;
  color: var(--color-muted);
  white-space: nowrap;
}

/* ========== Banner ========== */
.banner {
  position: absolute;
  left: -1px;
  top: -174px;
  width: 1990px;
  height: 1280px;
  overflow: hidden;
  z-index: 1;
}

.banner__bg {
  position: absolute;
  inset: 0;
  width: 1990px;
  height: 1280px;
  object-fit: cover;
}

.banner__title {
  position: absolute;
  left: 191.025px;
  top: 544.79px;
  font-size: 70.002px;
  line-height: 102px;
  font-weight: 700;
  white-space: nowrap;
  z-index: 2;
}

.banner__title span { color: var(--color-primary); }

.banner__subtitle {
  position: absolute;
  left: 191.625px;
  top: 657.8px;
  font-size: 46.667px;
  line-height: 68px;
  font-weight: 700;
  white-space: nowrap;
  z-index: 2;
}

.banner__desc {
  position: absolute;
  left: 195px;
  top: 753px;
  width: 650px;
  font-size: 26.667px;
  line-height: 45px;
  z-index: 2;
  user-select: text;
}

/* ========== TOP 导航 ========== */
.top-nav {
  position: absolute;
  left: -34px;
  top: 0;
  width: 1989px;
  height: 116px;
  z-index: 30;
  overflow: visible;
}

.top-nav__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.top-nav__logo {
  position: absolute;
  left: 187px;
  top: 21px;
  width: 71px;
  height: 71px;
}

.top-nav__logo img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  max-width: none;
}

.top-nav__brand-en {
  position: absolute;
  left: 271.625px;
  top: 29.178px;
  font-size: 23.333px;
  line-height: 34px;
  white-space: nowrap;
}

.top-nav__brand-cn {
  position: absolute;
  left: 271px;
  top: 65px;
  width: 93px;
  height: auto;
  object-fit: contain;
  max-width: none;
}

.top-nav__menu > a {
  position: absolute;
  top: 39.178px;
  font-size: 23.333px;
  line-height: 34px;
  white-space: nowrap;
  transition: color 0.2s;
}

.top-nav__menu > a:hover { color: var(--color-primary); }
.top-nav__menu > a:nth-child(1) { left: 578.625px; }
.top-nav__menu > a:nth-child(4) { left: 1022.625px; }
.top-nav__menu a.is-active { color: var(--color-primary); }

.top-nav__dropdown {
  position: absolute;
  top: 39.178px;
  font-size: 23.333px;
  line-height: 34px;
  white-space: nowrap;
  z-index: 2;
}

.top-nav__menu > .top-nav__dropdown:nth-child(2) {
  left: 697.625px;
}

.top-nav__menu > .top-nav__dropdown:nth-child(3) {
  left: 858.625px;
}

.top-nav__dropdown:hover,
.top-nav__dropdown:focus-within {
  z-index: 3;
}

.top-nav__dropdown > a {
  display: inline-block;
  transition: color 0.2s;
}

.top-nav__dropdown > a:hover,
.top-nav__dropdown:hover > a,
.top-nav__dropdown:focus-within > a {
  color: var(--color-primary);
}

/* 核心产品下拉：居中卡片 + 顶部小三角 */
.top-nav__submenu {
  position: absolute;
  left: 50%;
  top: calc(100% + 12px);
  width: 168px;
  padding: 8px;
  background: #fff;
  border-radius: 12px;
  box-shadow:
    0 14px 36px rgba(25, 109, 244, 0.14),
    0 2px 8px rgba(15, 40, 90, 0.06);
  border: 1px solid rgba(25, 109, 244, 0.12);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translate(-50%, 8px);
  transition: opacity 0.22s ease, transform 0.22s ease, visibility 0.22s ease;
  z-index: 40;
}

/* 悬停桥：避免从「核心产品」移到菜单时闪断 */
.top-nav__submenu::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: -16px;
  height: 16px;
}

/* 指向父级菜单的小三角 */
.top-nav__submenu::after {
  content: "";
  position: absolute;
  left: 50%;
  top: -6px;
  width: 12px;
  height: 12px;
  background: #fff;
  border-left: 1px solid rgba(25, 109, 244, 0.12);
  border-top: 1px solid rgba(25, 109, 244, 0.12);
  transform: translateX(-50%) rotate(45deg);
}

.top-nav__dropdown:hover .top-nav__submenu,
.top-nav__dropdown:focus-within .top-nav__submenu {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translate(-50%, 0);
}

.top-nav__submenu a,
.top-nav__submenu [role="menuitem"] {
  display: block;
  padding: 10px 8px;
  font-size: 16px;
  line-height: 1.4;
  text-align: center;
  color: #3a4454;
  position: static;
  left: auto;
  top: auto;
  white-space: nowrap;
  border-radius: 8px;
  transition: color 0.2s ease, background-color 0.2s ease;
}

.top-nav__submenu > * + * {
  margin-top: 2px;
}

.top-nav__submenu a:hover,
.top-nav__submenu a.is-current {
  color: var(--color-primary);
  background: rgba(25, 109, 244, 0.08);
}

.top-nav__submenu [role="menuitem"]:not(a) {
  cursor: default;
}

.top-nav__underline {
  position: absolute;
  left: 1040.2px;
  top: 112px;
  width: 48px;
  height: 4px;
}

.top-nav__phone-icon {
  position: absolute;
  left: 1471px;
  top: 43px;
  width: 31px;
  height: 30px;
}

.top-nav__phone {
  position: absolute;
  left: 1512.625px;
  top: 41.178px;
  font-size: 20px;
  line-height: 29px;
  white-space: nowrap;
}

.top-nav__cta {
  position: absolute;
  left: 1688px;
  top: 31px;
  width: 141px;
  height: 52px;
}

.top-nav__cta img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.top-nav__cta span {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  font-size: 20px;
  line-height: 29px;
  color: var(--color-white);
}

/* ========== 核心优势 ========== */
.stats {
  position: absolute;
  left: 153.61px;
  top: 812.46px;
  width: 1612.19px;
  height: 184.54px;
  z-index: 20;
  overflow: hidden;
}

.stats__bg {
  position: absolute;
  left: 0;
  top: 0;
  width: 1612.19px;
  height: 174.01px;
}

.stats__list {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  height: 174px;
  color: var(--color-white);
}

.stats__list li {
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: center;
  text-align: left;
  position: relative;
  padding: 8px 12px;
  gap: 10px;
}

.stats__list li:not(:last-child)::after {
  content: "";
  position: absolute;
  right: 0;
  top: 22px;
  width: 1px;
  height: 130px;
  background: rgba(255, 255, 255, 0.25);
}

.stats__list img {
  width: auto;
  height: 88px;
  object-fit: contain;
  flex-shrink: 0;
  mix-blend-mode: multiply;
}

.stats__copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-width: 0;
}

.stats__list p:first-of-type {
  font-size: 0;
  line-height: 65.445px;
  margin-bottom: 0;
}

.stats__list strong {
  font-size: 50.002px;
  font-weight: 400;
}

.stats__list small {
  font-size: 43.335px;
}

.stats__list p:first-of-type span {
  font-size: 26.668px;
}

.stats__list p:last-child {
  font-size: 26.668px;
  line-height: 39px;
}

/* ========== 发展历程 ========== */
.timeline {
  position: absolute;
  left: -1px;
  top: 1074px;
  width: 1921px;
  height: 827px;
  overflow: hidden;
  z-index: 5;
}

.timeline__bg {
  position: absolute;
  inset: 0;
  width: 1921px;
  height: 827px;
}

.timeline .sec-head { top: 1.88px; }

.timeline__items li {
  position: absolute;
  text-align: center;
  z-index: 2;
  white-space: nowrap;
}

/* 时间项坐标：相对 .timeline（1921×827），对齐 Figma 0:94–0:100 */
.timeline__items li:nth-child(1) { left: 8.069%; top: 35.642%; } /* 2016 */
.timeline__items li:nth-child(2) { left: 19.193%; top: 31.070%; } /* 2018 */
.timeline__items li:nth-child(3) { left: 32.744%; top: 26.717%; } /* 2020 */
.timeline__items li:nth-child(4) { left: 46.845%; top: 25.846%; } /* 2022 */
.timeline__items li:nth-child(5) { left: 61.265%; top: 25.121%; } /* 2024 */
.timeline__items li:nth-child(6) { left: 74.066%; top: 24.831%; } /* 2025 */
.timeline__items li:nth-child(7) { left: 86.434%; top: 25.193%; } /* 2026 */

.timeline__items strong {
  display: block;
  font-size: 30.001px;
  line-height: 44px;
  color: var(--color-primary);
  font-weight: 400;
}

.timeline__items span {
  display: block;
  font-size: 16.667px;
  line-height: 24px;
  color: var(--color-text);

}

.timeline__items span:last-child { margin-bottom: 0; }

/* ========== 核心能力 ========== */
.core {
  position: absolute;
  left: 0;
  top: 374px;
  width: 1921px;
  height: 2324px;
  overflow: hidden;
  z-index: 2;
  background: transparent;
  pointer-events: none;
}

.core .sec-head,
.core .sec-title,
.core .sec-sub,
.core .sec-line,
.core__visual,
.core__labels {
  pointer-events: auto;
}

.core__visual {
  position: absolute;
  left: 1px;
  top: 1501px;
  width: 1920px;
  height: 823px;
  object-fit: cover;
}

.core .sec-head { top: 1460.25px; }

.core__label {
  position: absolute;
  z-index: 3;
  color: var(--color-navy);
  transform: rotate(1.75deg);
  white-space: nowrap;
  /* 坐标相对整页，需减去 core.top=374 */
}

.core__label b {
  display: block;
  font-size: 16.667px;
  line-height: 21.138px;
  font-weight: 400;
  margin-bottom: 2px;
  letter-spacing: -0.6667px;
}

.core__label span {
  display: block;
  font-size: 13.334px;
  line-height: 19px;
  letter-spacing: -0.5334px;
}

.core__label--lg b {
  font-size: 23.334px;
  line-height: 32.461px;
  margin-bottom: 9px;
  letter-spacing: -0.9334px;
}

.core__label--lg span {
  font-size: 16.667px;
  line-height: 24px;
  letter-spacing: -0.6667px;
}

/* 标签坐标：相对 .core（Figma 0:76–0:84 locationRelativeToParent） */
.core__labels .core__label:nth-child(1) { left: 14.977%; top: 74.124%; } /* MES */
.core__labels .core__label:nth-child(2) { left: 26.097%; top: 73.147%; } /* IOT */
.core__labels .core__label:nth-child(3) { left: 23.700%; top: 79.747%; } /* 工业数据中台 */
.core__labels .core__label:nth-child(4) { left: 10.692%; top: 80.113%; } /* WMS */
.core__labels .core__label:nth-child(5) { left: 12.648%; top: 86.334%; } /* BI */
.core__labels .core__label:nth-child(6) { left: 25.666%; top: 86.508%; } /* AI分析 */
.core__labels .core__label:nth-child(7) { left: 37.245%; top: 87.319%; } /* 可视化大屏 */
.core__labels .core__label:nth-child(8) { left: 38.098%; top: 81.948%; } /* SOP */
.core__labels .core__label:nth-child(9) { left: 37.222%; top: 76.159%; } /* QMS */

/* ========== 环境与团队 ========== */
.team {
  position: absolute;
  left: 76px;
  top: 2479px;
  width: 1809px;
  height: 1989px;
  overflow: hidden;
  z-index: 5;
}

.team__bg {
  position: absolute;
  inset: 0;
  width: 1809px;
  height: 1989px;
}

.team .sec-head { top: 180.95px; left: calc(50% - 19.94px); }

.team__h3 {
  position: absolute;
  font-size: 43.23px;
  line-height: 63px;
  font-weight: 400;
  z-index: 2;
  white-space: nowrap;
}

.team__h3 span { color: var(--color-primary); }
.team__h3--office { left: 170.06px; top: 519.37px; }
.team__h3--staff {
  left: 992.66px;
  top: 1118.81px;
}

.team__p {
  position: absolute;
  font-size: 20.001px;
  line-height: 29px;
  color: var(--color-muted);
  z-index: 2;
}

.team__p--office { left: 170.66px; top: 598.41px; }
.team__p--staff { left: 992.66px; top: 1197.85px; }

/* 现代化办公环境三项文案底图：Figma 图层 37，149,740 920×136，叠在文字下方 */
.team__feature-bar {
  position: absolute;
  left: 149px;
  top: 740px;
  width: 920px;
  height: 136px;
  z-index: 1;
  pointer-events: none;
}

.team__features li {
  position: absolute;
  z-index: 2;
  color: var(--color-white);
  white-space: nowrap;
}

.team__features b {
  display: block;
  font-size: 23.334px;
  line-height: 30.656px;
  font-weight: 400;
  margin-bottom: 3px;
}

.team__features span {
  display: block;
  font-size: 20.001px;
  line-height: 29px;
}

.team__roles li {
  position: absolute;
  z-index: 2;
  color: var(--color-text);
  white-space: nowrap;
}

.team__roles b {
  display: block;
  font-size: 20.001px;
  line-height: 27.639px;
  font-weight: 400;
  margin-bottom: 4px;
}

.team__roles span {
  display: block;
  font-size: 16.667px;
  line-height: 24px;
}

.team__nums li {
  position: absolute;
  z-index: 2;
  color: var(--color-white);
  white-space: nowrap;
  text-align: left;
}

.team__nums strong {
  display: block;
  font-size: 36.668px;
  line-height: 43.223px;
  font-weight: 400;
  margin-bottom: 1px;
}

.team__nums small { font-size: 33.334px; }

.team__nums span {
  display: block;
  font-size: 16.667px;
  line-height: 24px;
}

/* ========== 荣誉资质 ========== */
.honors {
  position: absolute;
  left: 0;
  top: 4229px;
  width: 1920px;
  height: 1076px;
  overflow: hidden;
  z-index: 5;
}

.honors__bg {
  position: absolute;
  inset: 0;
  width: 1920px;
  height: 1076px;
}

.honors .sec-head { top: 255.65px; }

/* 证书舞台：按 Figma 精确坐标 */
.honors__stage {
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
}

.honors__card {
  position: absolute;
  margin: 0;
  transition:
    left 0.45s cubic-bezier(0.4, 0, 0.2, 1),
    top 0.45s cubic-bezier(0.4, 0, 0.2, 1),
    width 0.45s cubic-bezier(0.4, 0, 0.2, 1),
    height 0.45s cubic-bezier(0.4, 0, 0.2, 1),
    opacity 0.35s ease;
  will-change: left, top, width, height;
}

.honors__frame {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  mix-blend-mode: darken;
  z-index: 1;
  pointer-events: none;
}

/* 证书图对准荣誉框内层白底区域 */
.honors__photo-wrap {
  position: absolute;
  left: 25.8%;
  top: 14%;
  width: 48%;
  height: 53.2%;
  overflow: hidden;
  z-index: 2;
}

.honors__photo {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center top;
}

/* 0:44 远左 */
.honors__card--far-l {
  left: 116px;
  top: 378px;
  width: 394px;
  height: 483px;
  z-index: 1;
}

/* 0:42 中左 */
.honors__card--mid-l {
  left: 383px;
  top: 408px;
  width: 446px;
  height: 548px;
  z-index: 2;
}

/* 0:40 居中 — honor-1 */
.honors__card--center {
  left: 673px;
  top: 360px;
  width: 572px;
  height: 703px;
  z-index: 3;
}

/* 0:41 中右 — honor-2 */
.honors__card--mid-r {
  left: 1097px;
  top: 408px;
  width: 446px;
  height: 548px;
  z-index: 2;
}

/* 0:43 远右 — honor-3 */
.honors__card--far-r {
  left: 1415px;
  top: 378px;
  width: 394px;
  height: 483px;
  z-index: 1;
}

.honors__prev,
.honors__next {
  position: absolute;
  top: 593.15px;
  width: 51px;
  height: 51px;
  z-index: 4;
  pointer-events: auto;
  transition: opacity 0.2s, transform 0.2s;
}

.honors__prev:hover,
.honors__next:hover {
  transform: scale(1.06);
}

.honors__prev:active,
.honors__next:active {
  transform: scale(0.96);
}

.honors__prev { left: 76px; }
.honors__next { left: 1784px; }

.honors__prev > img:first-child,
.honors__next > img:first-child {
  width: 51px;
  height: 51px;
}

.honors__arrow {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 17px;
  height: 20px;
}

/* ========== CTA ========== */
.cta {
  position: absolute;
  left: 135px;
  top: 5242px;
  width: 1651px;
  height: 274px;
  overflow: hidden;
  z-index: 5;
}

.cta__bg {
  position: absolute;
  inset: 0;
  width: 1651px;
  height: 274px;
}

.cta__title {
  position: absolute;
  left: 64.87px;
  top: 52.96px;
  font-size: 33.33px;
  line-height: 48px;
  color: var(--color-white);
  text-shadow: 0.485px 0.875px 6px rgba(52, 82, 167, 0.3);
  white-space: nowrap;
  z-index: 2;
  font-weight: 400;
}

.cta__sub {
  position: absolute;
  left: 67.39px;
  top: 111.16px;
  font-size: 23.331px;
  line-height: 34px;
  color: var(--color-white);
  text-shadow: 0.485px 0.875px 6px rgba(52, 82, 167, 0.3);
  white-space: nowrap;
  z-index: 2;
}

.cta__btn {
  position: absolute;
  top: 174.98px;
  height: 44px;
  z-index: 3;
}

.cta__btn--primary { left: 69.77px; width: 167.99px; }
.cta__btn--secondary { left: 69.77px; width: 128.99px; }

.cta__btn img {
  position: absolute;
  inset: -6px -8px;
  width: calc(100% + 16px);
  height: calc(100% + 12px);
  max-width: none;
}

.cta__btn span {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  font-size: 19.943px;
  line-height: 29px;
  color: var(--color-primary);
  white-space: nowrap;
}

/* ========== 吸顶导航：桌面滚动后滑入；画布内 top-nav 受 transform 限制无法真正 fixed ========== */
.site-header {
  display: block;
  position: fixed;
  left: 0;
  top: 0;
  width: 100%;
  z-index: 300;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(25, 109, 244, 0.1);
  box-shadow: 0 8px 28px rgba(25, 109, 244, 0.1);
  transform: translate3d(0, -110%, 0);
  transition: transform 0.38s cubic-bezier(0.22, 1, 0.36, 1);
  pointer-events: none;
}

.site-header.is-fixed {
  transform: translate3d(0, 0, 0);
  pointer-events: auto;
}

.site-header__inner {
  display: flex;
  align-items: center;
  gap: 28px;
  width: min(92%, 1600px);
  height: 72px;
  margin: 0 auto;
}

.site-header__brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.site-header__brand img:first-child {
  width: 48px;
  height: 48px;
  object-fit: contain;
}

.site-header__brand-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.site-header__brand-en {
  font-size: 15px;
  line-height: 1.2;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.site-header__brand-cn {
  width: 78px;
  height: auto;
}

.site-header__nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 36px;
  flex: 1;
  font-size: 16px;
  line-height: 1.4;
}

.site-header__nav > a {
  padding: 6px 0;
  transition: color 0.2s;
}

.site-header__nav > a:hover,
.site-header__nav > a.is-active {
  color: var(--color-primary);
}

.site-header__dropdown {
  position: relative;
}

.site-header__dropdown > a {
  display: inline-block;
  padding: 6px 0;
  transition: color 0.2s;
}

.site-header__dropdown:hover > a,
.site-header__dropdown:focus-within > a,
.site-header__dropdown > a.is-active {
  color: var(--color-primary);
}

.site-header__submenu {
  position: absolute;
  left: 50%;
  top: calc(100% + 10px);
  width: 160px;
  padding: 8px;
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 14px 36px rgba(25, 109, 244, 0.14), 0 2px 8px rgba(15, 40, 90, 0.06);
  border: 1px solid rgba(25, 109, 244, 0.12);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translate(-50%, 8px);
  transition: opacity 0.22s ease, transform 0.22s ease, visibility 0.22s ease;
  z-index: 40;
}

.site-header__submenu::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: -14px;
  height: 14px;
}

.site-header__submenu::after {
  content: "";
  position: absolute;
  left: 50%;
  top: -6px;
  width: 12px;
  height: 12px;
  background: #fff;
  border-left: 1px solid rgba(25, 109, 244, 0.12);
  border-top: 1px solid rgba(25, 109, 244, 0.12);
  transform: translateX(-50%) rotate(45deg);
}

.site-header__dropdown:hover .site-header__submenu,
.site-header__dropdown:focus-within .site-header__submenu {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translate(-50%, 0);
}

.site-header__submenu a,
.site-header__submenu [role="menuitem"] {
  display: block;
  padding: 10px 8px;
  font-size: 14px;
  text-align: center;
  color: #3a4454;
  border-radius: 8px;
  transition: color 0.2s, background-color 0.2s;
}

.site-header__submenu > * + * { margin-top: 2px; }

.site-header__submenu a:hover,
.site-header__submenu a.is-current {
  color: var(--color-primary);
  background: rgba(25, 109, 244, 0.08);
}

.site-header__submenu [role="menuitem"]:not(a) {
  cursor: default;
}

.site-header__phone--bar {
  flex-shrink: 0;
  font-size: 16px;
  color: var(--color-primary);
  font-weight: 600;
  white-space: nowrap;
}

.site-header__cta--bar {
  flex-shrink: 0;
  height: 40px;
  padding: 0 18px;
  border-radius: 999px;
  background: var(--color-primary);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  white-space: nowrap;
}

.site-header__toggle,
.site-header__drawer {
  display: none;
}

@media (prefers-reduced-motion: reduce) {
  .site-header {
    transition: none;
  }
}

/* ========== 断点：平板 & 手机 — 流式布局 ========== */
@media (max-width: 991px) {
  :root { --scale: 1; }

  .site-header {
    display: block;
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(25, 109, 244, 0.08);
    box-shadow: none;
    transform: none;
    pointer-events: auto;
    transition: none;
  }

  .site-header__nav,
  .site-header__phone--bar,
  .site-header__cta--bar {
    display: none;
  }

  .site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    max-width: 100%;
    height: 64px;
    padding: 0 16px;
  }

  .site-header__brand {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: inherit;
    min-width: 0;
  }

  .site-header__brand img:first-child {
    width: 44px;
    height: 44px;
    object-fit: contain;
    flex-shrink: 0;
  }

  .site-header__brand-text {
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
  }

  .site-header__brand-en {
    font-size: 14px;
    line-height: 1.2;
    white-space: nowrap;
  }

  .site-header__brand-cn {
    width: 72px;
    height: auto;
  }

  .site-header__toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    padding: 8px;
    flex-shrink: 0;
  }

  .site-header__toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--color-text);
    border-radius: 1px;
    transition: transform 0.2s, opacity 0.2s;
  }

  .site-header__toggle[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .site-header__toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
  }

  .site-header__toggle[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .site-header__drawer {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 8px 16px 16px;
    background: #fff;
    border-top: 1px solid rgba(0, 0, 0, 0.06);
  }

  .site-header__drawer[hidden] {
    display: none;
  }

  .site-header__drawer a,
  .site-header__drawer button,
  .site-header__drawer .site-header__sublink {
    display: block;
    padding: 12px 8px;
    font-size: 16px;
    line-height: 1.4;
    text-align: left;
    border-radius: 8px;
  }

  .site-header__drawer a:hover,
  .site-header__drawer a.is-active {
    color: var(--color-primary);
    font-weight: 600;
  }

  .site-header__sublink {
    margin: 0 4px 0 12px;
    padding: 8px 12px 8px 14px !important;
    font-size: 14px !important;
    color: #556070;
    background: #f4f8fe;
    border-left: 2px solid rgba(25, 109, 244, 0.35);
    border-radius: 0 8px 8px 0;
  }

  span.site-header__sublink {
    cursor: default;
  }

  a.site-header__sublink:hover,
  .site-header__sublink.is-active {
    color: var(--color-primary);
    background: rgba(25, 109, 244, 0.1);
    font-weight: 600;
  }

  .site-header__phone {
    color: var(--color-primary);
    font-weight: 600;
  }

  .site-header__cta {
    margin-top: 8px;
    height: 44px;
    border-radius: 999px;
    background: var(--color-primary);
    color: #fff;
    text-align: center;
    font-weight: 600;
  }

  /* 取消画布缩放，改为文档流 */
  .viewport {
    width: 100%;
    height: auto;
    overflow: visible;
  }

  .canvas {
    position: relative;
    transform: none;
    width: 100%;
    height: auto;
    left: auto;
    top: auto;
  }

  .top-nav { display: none; }

  .sec-head {
    position: relative;
    left: auto;
    top: auto;
    transform: none;
    width: 100%;
    padding: 0 16px;
  }

  .sec-title,
  .sec-sub,
  .sec-line {
    position: relative;
    left: auto;
    top: auto;
    transform: none;
    white-space: normal;
    text-align: center;
  }

  .sec-title {
    font-size: clamp(1.5rem, 2.257vw, 4.51375rem);
    font-weight: 700;
    line-height: 1.45;
    color: var(--color-text);
    margin-bottom: 0;
  }

  .sec-line {
    width: clamp(2rem, 3.1875vw, 6.375rem);
    height: auto;
    margin: 0.4% auto 0.8%;
  }

  .sec-sub {
    font-size: clamp(0.875rem, 1.215vw, 2.4305rem);
    line-height: 1.45;
    max-width: 560px;
    margin: 0 auto 24px;
    padding: 0;
  }

  /* Banner */
  .banner {
    position: relative;
    left: auto;
    top: auto;
    width: 100%;
    min-height: clamp(360px, 70vw, 520px);
    overflow: hidden;
  }

  .banner__bg {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center top;
  }

  .banner__title,
  .banner__subtitle,
  .banner__desc {
    position: relative;
    left: auto;
    top: auto;
    z-index: 2;
    white-space: normal;
  }

  .banner__title {
    padding: clamp(48px, 12vw, 80px) 20px 0;
    font-size: clamp(28px, 7vw, 44px);
    line-height: 1.3;
    max-width: 640px;
  }

  .banner__subtitle {
    padding: 12px 20px 0;
    font-size: clamp(18px, 4.5vw, 28px);
    line-height: 1.4;
  }

  .banner__desc {
    padding: 16px 20px 32px;
    width: auto;
    max-width: 640px;
    font-size: clamp(14px, 3.5vw, 17px);
    line-height: 1.75;
  }

  /* 核心优势 */
  .stats {
    position: relative;
    left: auto;
    top: auto;
    width: calc(100% - 32px);
    height: auto;
    margin: -40px auto 48px;
    z-index: 10;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 8px 32px rgba(25, 109, 244, 0.12);
  }

  .stats__bg {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
  }

  .stats__list {
    position: relative;
    grid-template-columns: repeat(2, 1fr);
    height: auto;
    padding: 20px 8px;
    gap: 8px 0;
  }

  .stats__list li:not(:last-child)::after {
    display: none;
  }

  .stats__list li:nth-child(odd)::after {
    display: block;
    right: 0;
    top: 12px;
    height: calc(100% - 24px);
  }

  .stats__list img {
    width: auto;
    height: 48px;
    margin-bottom: 0;
  }

  .stats__list strong { font-size: 28px; }
  .stats__list small { font-size: 22px; }
  .stats__list p:first-of-type span { font-size: 14px; }
  .stats__list p:last-child { font-size: 13px; line-height: 1.4; }

  /* 发展历程 */
  .timeline {
    position: relative;
    left: auto;
    top: auto;
    width: 100%;
    height: auto;
    padding: 48px 0 56px;
    background: #f9fbfe;
  }

  .timeline__bg { display: none; }

  .timeline__items {
    display: flex;
    flex-direction: column;
    gap: 0;
    max-width: 480px;
    margin: 0 auto;
    padding: 0 24px;
  }

  .timeline__items li {
    position: relative;
    left: auto !important;
    top: auto !important;
    transform: none;
    width: auto;
    text-align: left;
    padding: 20px 0 20px 28px;
    border-left: 2px solid rgba(25, 109, 244, 0.25);
  }

  .timeline__items li::before {
    content: "";
    position: absolute;
    left: -6px;
    top: 26px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--color-primary);
  }

  .timeline__items strong {
    font-size: 22px;
    margin-bottom: 8px;
  }

  .timeline__items span {
    font-size: 14px;
    margin-bottom: 4px;
  }

  /* 核心能力 */
  .core {
    position: relative;
    left: auto;
    top: auto;
    width: 100%;
    height: auto;
    overflow: visible;
    pointer-events: auto;
    padding: 48px 0 56px;
  }

  .core .sec-head,
  .core .sec-title,
  .core .sec-line,
  .core .sec-sub {
    position: relative;
    top: auto;
  }

  .core__visual {
    position: relative;
    left: auto;
    top: auto;
    width: 100%;
    height: auto;
    margin: 8px 0 24px;
    object-fit: contain;
  }

  .core__labels {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    padding: 0 16px;
    max-width: 640px;
    margin: 0 auto;
  }

  .core__labels .core__label {
    position: relative;
    left: auto !important;
    top: auto !important;
    transform: none;
    white-space: normal;
    padding: 14px 12px;
    background: rgba(245, 248, 255, 0.9);
    border-radius: 10px;
    border: 1px solid rgba(25, 109, 244, 0.1);
    text-align: center;
  }

  .core__label--lg {
    grid-column: 1 / -1;
  }

  .core__label b { font-size: 15px; }
  .core__label span { font-size: 12px; }
  .core__label--lg b { font-size: 18px; }
  .core__label--lg span { font-size: 14px; }

  /* 环境与团队 */
  .team {
    position: relative;
    left: auto;
    top: auto;
    width: 100%;
    height: auto;
    padding: 48px 0 56px;
    background: #f9fbfe;
  }

  .team__bg {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.15;
  }

  .team .sec-head,
  .team .sec-title,
  .team .sec-line,
  .team .sec-sub {
    position: relative;
    left: auto;
    top: auto;
  }

  .team__h3,
  .team__p {
    position: relative;
    left: auto !important;
    top: auto !important;
    transform: none;
    white-space: normal;
    text-align: center;
    width: auto;
  }

  .team__feature-bar {
    display: none;
  }

  .team__h3 {
    font-size: clamp(22px, 5vw, 32px);
    line-height: 1.35;
    margin: 32px 16px 12px;
  }

  .team__p {
    font-size: 14px;
    line-height: 1.7;
    color: var(--color-muted);
    max-width: 520px;
    margin: 0 auto 24px;
    padding: 0 16px;
  }

  .team__features,
  .team__roles,
  .team__nums {
    display: grid;
    gap: 12px;
    padding: 0 16px;
    max-width: 640px;
    margin: 0 auto 24px;
  }

  .team__features {
    grid-template-columns: repeat(3, 1fr);
  }

  .team__roles {
    grid-template-columns: repeat(2, 1fr);
  }

  .team__nums {
    grid-template-columns: repeat(3, 1fr);
  }

  .team__features li,
  .team__roles li,
  .team__nums li {
    position: relative !important;
    left: auto !important;
    top: auto !important;
    white-space: normal;
    text-align: center;
    padding: 16px 8px;
    background: rgba(255, 255, 255, 0.85);
    border-radius: 12px;
    box-shadow: 0 4px 16px rgba(25, 109, 244, 0.08);
    color: var(--color-text);
  }

  .team__features li { color: var(--color-text); background: rgba(25, 109, 244, 0.08); }
  .team__features b { font-size: 15px; color: var(--color-primary); }
  .team__features span { font-size: 12px; color: var(--color-muted); }
  .team__roles b { font-size: 15px; }
  .team__roles span { font-size: 12px; }
  .team__nums strong { font-size: 22px; margin-bottom: 6px; color: var(--color-primary); }
  .team__nums span { font-size: 12px; }

  /* 荣誉资质 */
  .honors {
    position: relative;
    left: auto;
    top: auto;
    width: 100%;
    height: auto;
    min-height: 420px;
    padding: 48px 0 64px;
  }

  .honors__bg {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.35;
  }

  .honors .sec-head,
  .honors .sec-title,
  .honors .sec-line,
  .honors .sec-sub {
    position: relative;
    top: auto;
  }

  .honors__stage {
    position: relative;
    height: clamp(280px, 55vw, 380px);
    margin-top: 16px;
  }

  .honors__card--far-l,
  .honors__card--far-r {
    opacity: 0;
    pointer-events: none;
  }

  .honors__card--mid-l {
    left: 8% !important;
    top: 50% !important;
    width: 38% !important;
    height: auto !important;
    aspect-ratio: 572 / 703;
    transform: translateY(-50%);
  }

  .honors__card--center {
    left: 50% !important;
    top: 50% !important;
    width: 52% !important;
    height: auto !important;
    aspect-ratio: 572 / 703;
    transform: translate(-50%, -50%);
  }

  .honors__card--mid-r {
    left: auto !important;
    right: 8% !important;
    top: 50% !important;
    width: 38% !important;
    height: auto !important;
    aspect-ratio: 572 / 703;
    transform: translateY(-50%);
  }

  .honors__prev,
  .honors__next {
    top: 50%;
    transform: translateY(-50%);
    width: 40px;
    height: 40px;
  }

  .honors__prev:hover,
  .honors__next:hover {
    transform: translateY(-50%) scale(1.06);
  }

  .honors__prev { left: 8px; }
  .honors__next { left: auto; right: 8px; }

  .honors__prev > img:first-child,
  .honors__next > img:first-child {
    width: 40px;
    height: 40px;
  }

  /* CTA */
  .cta {
    position: relative;
    left: auto;
    top: auto;
    width: calc(100% - 32px);
    height: auto;
    margin: 0 auto 48px;
    border-radius: 16px;
    overflow: hidden;
  }

  .cta__bg {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
  }

  .cta__title,
  .cta__sub {
    position: relative;
    left: auto;
    top: auto;
    white-space: normal;
    padding: 0 20px;
  }

  .cta__title {
    padding-top: 32px;
    font-size: clamp(20px, 5vw, 28px);
    line-height: 1.4;
  }

  .cta__sub {
    padding-top: 12px;
    font-size: 14px;
    line-height: 1.6;
    opacity: 0.95;
  }

  .cta__btn {
    position: relative;
    left: auto !important;
    top: auto;
    display: inline-flex;
    margin: 20px 10px 28px;
    width: auto;
    min-width: 140px;
    padding: 0 20px;
  }

  .cta {
    text-align: center;
  }
}

/* ========== 断点：小屏手机 ========== */
@media (max-width: 575px) {
  .stats__list {
    grid-template-columns: 1fr;
  }

  .stats__list li:nth-child(odd)::after {
    display: none;
  }

  .stats__list li {
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    padding-bottom: 16px;
  }

  .stats__list li:last-child {
    border-bottom: none;
  }

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

  .core__label--lg {
    grid-column: auto;
  }

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

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

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

  .honors__card--mid-l,
  .honors__card--mid-r {
    opacity: 0;
  }

  .honors__card--center {
    width: 72% !important;
  }

  .cta__btn {
    display: flex;
    width: calc(100% - 40px);
    margin: 12px 20px;
    justify-content: center;
  }
}

/* ========== 弹窗 ========== */
.modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 16px;
}

.modal.is-open { display: flex; }

.modal__overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
}

.modal__dialog {
  position: relative;
  width: min(440px, 100%);
  background: #fff;
  border-radius: 12px;
  padding: 32px 28px 28px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.18);
  z-index: 1;
}

.modal__close {
  position: absolute;
  top: 12px;
  right: 16px;
  font-size: 28px;
  color: #999;
}

.modal__title {
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 20px;
}

.modal__field { display: block; margin-bottom: 14px; }
.modal__field span { display: block; font-size: 13px; color: #666; margin-bottom: 6px; }
.modal__field input {
  width: 100%;
  height: 42px;
  padding: 0 12px;
  border: 1px solid #ddd;
  border-radius: 8px;
  font-size: 14px;
}

.modal__field input:focus { border-color: var(--color-primary); outline: none; }

.modal__submit {
  width: 100%;
  height: 44px;
  margin-top: 8px;
  background: var(--color-primary);
  color: #fff;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
}

/* =========================================================
   入场动效：Banner 升起 + 滚动放大滑入；时间轴依次出现
   ========================================================= */
.reveal,
.item-reveal {
  opacity: 0;
  transform: translateY(20px) scale(0.94);
  transition:
    opacity 0.6s cubic-bezier(0.22, 1, 0.36, 1),
    transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.is-visible,
.item-reveal.is-in {
  opacity: 1;
  transform: none;
}

.sec-head {
  pointer-events: auto;
}

.timeline .sec-title.item-reveal { transition-delay: 0.04s; }
.timeline .sec-line.item-reveal { transition-delay: 0.12s; }
.timeline .sec-sub.item-reveal { transition-delay: 0.2s; }

.cta__title.item-reveal { transition-delay: 0.04s; }
.cta__sub.item-reveal { transition-delay: 0.14s; }
.cta__btn--primary.item-reveal { transition-delay: 0.24s; }
.cta__btn--secondary.item-reveal { transition-delay: 0.32s; }

.banner.reveal {
  opacity: 1;
  transform: none;
}

.banner-rise {
  opacity: 0;
}

.banner.is-visible .banner-rise {
  animation: bannerRise 0.95s cubic-bezier(0.16, 1, 0.3, 1) both;
  animation-delay: var(--d, 0s);
}

@keyframes bannerRise {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* 发展历程：时间轴文字从上往下依次滑入 */
.timeline__items li.item-reveal {
  opacity: 0;
  transform: translateY(-18px);
  transition:
    opacity 0.4s ease,
    transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.timeline__items li.item-reveal.is-in {
  opacity: 1;
  transform: none;
}

.stats__list li.item-reveal:nth-child(1) { transition-delay: 0.04s; }
.stats__list li.item-reveal:nth-child(2) { transition-delay: 0.16s; }
.stats__list li.item-reveal:nth-child(3) { transition-delay: 0.28s; }
.stats__list li.item-reveal:nth-child(4) { transition-delay: 0.4s; }

.core__label.item-reveal {
  transform: rotate(1.75deg) translateY(16px) scale(0.96);
}

.core__label.item-reveal.is-in {
  transform: rotate(1.75deg);
}

.core__label.item-reveal:nth-child(1) { transition-delay: 0.04s; }
.core__label.item-reveal:nth-child(2) { transition-delay: 0.12s; }
.core__label.item-reveal:nth-child(3) { transition-delay: 0.2s; }
.core__label.item-reveal:nth-child(4) { transition-delay: 0.28s; }
.core__label.item-reveal:nth-child(5) { transition-delay: 0.36s; }
.core__label.item-reveal:nth-child(6) { transition-delay: 0.44s; }
.core__label.item-reveal:nth-child(7) { transition-delay: 0.52s; }
.core__label.item-reveal:nth-child(8) { transition-delay: 0.6s; }
.core__label.item-reveal:nth-child(9) { transition-delay: 0.68s; }

.team__features li.item-reveal:nth-child(1) { transition-delay: 0.06s; }
.team__features li.item-reveal:nth-child(2) { transition-delay: 0.18s; }
.team__features li.item-reveal:nth-child(3) { transition-delay: 0.3s; }

.team__roles li.item-reveal:nth-child(1) { transition-delay: 0.06s; }
.team__roles li.item-reveal:nth-child(2) { transition-delay: 0.16s; }
.team__roles li.item-reveal:nth-child(3) { transition-delay: 0.26s; }
.team__roles li.item-reveal:nth-child(4) { transition-delay: 0.36s; }

.team__nums li.item-reveal:nth-child(1) { transition-delay: 0.06s; }
.team__nums li.item-reveal:nth-child(2) { transition-delay: 0.18s; }
.team__nums li.item-reveal:nth-child(3) { transition-delay: 0.3s; }

@media (max-width: 991px) {
  .timeline__items li.item-reveal:not(.is-in) {
    opacity: 0;
    transform: translateY(-14px);
  }

  .timeline__items li.item-reveal.is-in {
    opacity: 1;
    transform: none;
  }

  .sec-title.item-reveal,
  .sec-sub.item-reveal,
  .sec-line.item-reveal,
  .sec-title.item-reveal.is-in,
  .sec-sub.item-reveal.is-in,
  .sec-line.item-reveal.is-in {
    transform: none;
  }

  .core__label.item-reveal:not(.is-in) {
    transform: translateY(16px) scale(0.96);
  }

  .core__label.item-reveal.is-in {
    transform: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .reveal,
  .item-reveal,
  .banner-rise,
  .timeline__items li.item-reveal {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
    animation: none !important;
  }

  .core__label.item-reveal {
    transform: rotate(1.75deg) !important;
  }
}