/* ==========================================================================
   常青 / EVERGREEN · 关于我们 v3（内容与样式从零重写）
   --------------------------------------------------------------------------
   只负责 about 页本体：令牌与顶部 / 底部来自 theme.css。
   语义化分节、事实密度高、图片全部带描述性 alt，面向 SEO 与 GEO 摘录。
   不做隐藏式入场动画，内容始终 100% 可见。
   ========================================================================== */

.au-main { display: block; background: var(--g-cream); }
.au-wrap { width: min(var(--g-wrap), calc(100% - 64px)); margin-inline: auto; }
.au-sec { padding: clamp(72px, 8vw, 118px) 0; }
.au-sec + .au-sec { border-top: 1px solid var(--g-line); }
.au-main :focus-visible { outline: 3px solid var(--g-leaf); outline-offset: 3px; }

/* ---------- 通用标题区 ----------
   标题不再被固定宽度锁死：容器铺满内容区，多行时用 text-wrap:balance 均分，
   避免末行只剩 1~2 个字的孤行。说明文字仍限制阅读宽度。 */
.au-sec-head { margin-bottom: 46px; max-width: none; }
.au-main h1, .au-main h2, .au-main h3 { text-wrap: balance; }
.au-sec-head h2 {
  font-size: clamp(28px, 3.15vw, 42px); line-height: 1.3;
  margin: 16px 0 16px; color: var(--g-ink);
}
.au-sec-head > p, .au-sec-head--split > p {
  font-size: 16px; line-height: 1.85; color: var(--g-muted); max-width: 68ch;
}
.au-sec-head--split {
  max-width: none; display: grid; grid-template-columns: minmax(0, 1.6fr) minmax(0, .8fr);
  gap: clamp(24px, 4vw, 60px); align-items: end;
}
.au-sec-head--split > div { min-width: 0; }
.au-sec-head--split > p { padding-bottom: 6px; }
.au-sec-lead { font-size: 16.5px; line-height: 1.9; color: var(--g-muted); }
.au-sec-lead strong, .au-vision-copy strong { color: var(--g-green); font-weight: 700; }
.au-hero-facts strong { color: var(--g-leaf); font-weight: 700; }
.au-main .g-more { display: inline-flex; align-items: center; gap: 8px; font-size: 14px; font-weight: 700; color: var(--g-green); white-space: nowrap; }
.au-main .g-more:hover { gap: 14px; text-decoration: underline; text-underline-offset: 5px; }
.au-main .g-more svg { width: 17px; height: 17px; }

/* ---------- 1. Hero / 企业概况：纯深绿 + 轻装饰（无背景大图） ---------- */
.au-hero {
  position: relative; padding: 34px 0 clamp(56px, 6vw, 88px); overflow: hidden;
  background: var(--g-deep); color: #fff;
}
.au-hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(620px 420px at 88% -8%, rgba(98,173,123,.16), transparent 66%),
    radial-gradient(560px 460px at -6% 108%, rgba(47,125,79,.22), transparent 64%);
}
/* 细弧线装饰：右上两组同心圆 + 左下叶脉斜线，均极低对比不抢内容 */
.au-hero::after {
  content: ""; position: absolute; right: -180px; top: -260px; width: 640px; height: 640px;
  border-radius: 50%; border: 1px solid rgba(255,255,255,.07); pointer-events: none;
  box-shadow: 0 0 0 70px rgba(255,255,255,.028), 0 0 0 150px rgba(255,255,255,.02);
}
.au-hero-grid { position: relative; z-index: 1; }
/* 后台 banner 图：右侧原色呈现，左缘渐隐融入深绿，不压文字区 */
.au-hero-photo {
  position: absolute; top: 0; right: 0; bottom: 0; z-index: 0;
  width: min(58%, 780px); pointer-events: none;
}
.au-hero-photo img {
  width: 100%; height: 100%; object-fit: cover; object-position: center;
  -webkit-mask-image: linear-gradient(90deg, transparent 0%, #000 42%);
  mask-image: linear-gradient(90deg, transparent 0%, #000 42%);
}
.au-hero-copy { position: relative; z-index: 1; max-width: 900px; }
.au-crumb { display: flex; align-items: center; gap: 10px; font-size: 13px; color: rgba(255,255,255,.62); margin-bottom: 30px; }
.au-crumb a:hover { color: var(--g-leaf); }
.au-crumb span[aria-current] { color: #fff; font-weight: 600; }
.au-hero .g-eyebrow { color: var(--g-leaf); }
.au-hero .g-eyebrow::before { background: var(--g-leaf); }
.au-hero-copy h1 {
  font-size: clamp(40px, 4.8vw, 68px); line-height: 1.14; margin: 18px 0 24px;
  color: #fff; letter-spacing: -.035em; font-weight: 800;
}
.au-h1-sub { display: block; margin-top: 14px; font-size: clamp(22px, 2.7vw, 38px); font-weight: 700; color: var(--g-leaf); letter-spacing: 0; }
.au-hero-lead { font-size: clamp(17px, 1.35vw, 20px); line-height: 1.9; color: rgba(255,255,255,.88); max-width: 58ch; }
.au-hero-facts { margin-top: 18px; font-size: 15.5px; line-height: 1.95; color: rgba(255,255,255,.72); max-width: 62ch; }
.au-hero-btns { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 36px; }
.au-hero-btns .g-btn-primary { background: #fff; color: var(--g-deep); box-shadow: 0 14px 30px -16px rgba(0,0,0,.6); }
.au-hero-btns .g-btn-primary:hover { background: var(--g-leaf); color: var(--g-deep); }
.au-hero-btns .g-btn-ghost { color: #fff; border-color: rgba(255,255,255,.45); }
.au-hero-btns .g-btn-ghost:hover { background: rgba(255,255,255,.12); border-color: #fff; }

.au-facts {
  position: relative; z-index: 1;
  margin: clamp(24px, 3vw, 40px) 0 0; display: grid; grid-template-columns: repeat(5, minmax(0, 1fr));
  background: #fff; border: 1px solid var(--g-line); border-radius: var(--g-r-lg); overflow: hidden;
  box-shadow: 0 16px 44px -34px rgba(13,47,34,.35);
}
.au-facts > div { padding: 28px 24px 26px; border-right: 1px solid var(--g-line); }
.au-facts > div:last-child { border-right: 0; }
.au-facts dt { font-size: 13px; color: var(--g-muted); letter-spacing: .02em; }
.au-facts dd { margin: 8px 0 4px; color: var(--g-green); line-height: 1; }
.au-facts dd b { font-size: clamp(34px, 3.4vw, 46px); font-weight: 800; letter-spacing: -.04em; }
.au-facts dd span { font-size: 14px; font-weight: 700; margin-left: 4px; }
.au-facts p { font-size: 12.5px; color: var(--g-muted); }

/* ---------- 2. 全链路 ---------- */
.au-chain { background: #fff; }
.au-chain-track {
  display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); gap: 0;
  border-top: 1px solid var(--g-line); padding-top: 34px;
}
.au-chain-item { position: relative; padding: 0 18px 0 0; }
.au-chain-item::before {
  content: ""; position: absolute; top: 13px; left: 26px; right: 0; height: 1px; background: var(--g-line);
}
.au-chain-item:last-child::before { display: none; }
.au-chain-n {
  position: relative; display: grid; place-items: center; width: 27px; height: 27px;
  border-radius: 50%; background: var(--g-mint); color: var(--g-green);
  font-size: 11px; font-weight: 800; border: 1px solid var(--g-mint-2);
}
.au-chain-item h3 { font-size: 16px; margin: 18px 0 9px; color: var(--g-ink); }
.au-chain-item p { font-size: 13.5px; line-height: 1.8; color: var(--g-muted); }

/* ---------- 3. 主营业务 ---------- */
.au-biz-grid { display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr); gap: clamp(40px, 5vw, 80px); align-items: center; }
.au-biz-copy h2 { font-size: clamp(28px, 3.15vw, 42px); line-height: 1.3; margin: 16px 0 18px; }
.au-biz-list { margin-top: 30px; display: grid; gap: 18px; }
.au-biz-list li { display: flex; gap: 14px; align-items: flex-start; }
.au-tick {
  flex: 0 0 24px; width: 24px; height: 24px; margin-top: 3px; border-radius: 50%;
  background: var(--g-mint); color: var(--g-green); display: grid; place-items: center;
}
.au-tick svg { width: 14px; height: 14px; }
.au-biz-list strong { display: block; font-size: 15.5px; color: var(--g-ink); }
.au-biz-list p { font-size: 14px; line-height: 1.75; color: var(--g-muted); margin-top: 3px; }
.au-biz-links { display: flex; flex-wrap: wrap; align-items: center; gap: 24px; margin-top: 34px; }
.au-biz-media { margin: 0; }
.au-biz-media img { width: 100%; height: auto; aspect-ratio: 4 / 4.1; object-fit: cover; border-radius: var(--g-r-lg); box-shadow: var(--g-shadow); }
.au-biz-media figcaption, .au-client-media figcaption, .au-vision-media figcaption {
  font-size: 12.5px; line-height: 1.7; color: var(--g-muted); margin-top: 12px;
}

/* ---------- 4. 核心业务优势 ---------- */
.au-advantage { background: var(--g-mint); }
.au-adv-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.au-adv-card {
  background: #fff; border: 1px solid var(--g-line); border-radius: var(--g-r);
  padding: 30px 28px 32px; transition: transform .28s var(--g-ease), box-shadow .28s;
}
.au-adv-card:hover { transform: translateY(-4px); box-shadow: var(--g-shadow); }
.au-adv-n { font-size: 12px; font-weight: 800; letter-spacing: .12em; color: var(--g-green-2); }
.au-adv-card h3 { font-size: 18px; margin: 14px 0 11px; color: var(--g-ink); }
.au-adv-card p { font-size: 14px; line-height: 1.85; color: var(--g-muted); }

/* ---------- 5. 服务覆盖 ---------- */
.au-area-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; }
.au-area-grid a {
  display: flex; align-items: center; gap: 10px; min-height: 74px; padding: 0 20px;
  background: #fff; border: 1px solid var(--g-line); border-radius: var(--g-r);
  font-size: 16px; font-weight: 700; color: var(--g-ink);
  transition: background .25s, border-color .25s, color .25s, transform .25s;
}
.au-area-grid a:hover { background: var(--g-green); border-color: var(--g-green); color: #fff; transform: translateY(-3px); }
.au-area-mark { width: 9px; height: 9px; border-radius: 50%; background: var(--g-leaf); flex: 0 0 9px; }
.au-area-grid a:hover .au-area-mark { background: #fff; }
.au-area-txt { margin-left: auto; font-size: 11.5px; font-weight: 600; color: var(--g-muted); }
.au-area-grid a:hover .au-area-txt { color: rgba(255,255,255,.8); }
.au-area-note { margin-top: 24px; font-size: 14px; line-height: 1.85; color: var(--g-muted); }

/* ---------- 6. 标杆客户：大数字 + 分组标签矩阵 ---------- */
.au-clients { background: #fff; }
.au-client-showcase {
  display: grid; grid-template-columns: minmax(0, .92fr) minmax(0, 1.08fr);
  gap: clamp(32px, 4.5vw, 68px); align-items: center; margin-bottom: 46px;
}
.au-client-media { margin: 0; }
.au-client-media img {
  width: 100%; height: auto; aspect-ratio: 4 / 2.9; object-fit: cover;
  border-radius: var(--g-r-lg); box-shadow: var(--g-shadow);
}
.au-client-big { display: flex; align-items: baseline; flex-wrap: wrap; gap: 10px; }
.au-client-big b {
  font-size: clamp(76px, 9vw, 126px); line-height: .88; font-weight: 800;
  letter-spacing: -.07em; color: var(--g-green);
}
.au-client-big span { font-size: clamp(20px, 2.2vw, 28px); font-weight: 800; color: var(--g-ink); }
.au-client-big em {
  display: block; flex: 0 0 100%; font-style: normal; font-size: 13px;
  letter-spacing: .18em; color: var(--g-muted); margin-top: 8px;
}
.au-client-sum-lead { margin-top: 22px; font-size: 15.5px; line-height: 1.9; color: var(--g-muted); max-width: 52ch; }
.au-client-kpi {
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px;
  margin: 26px 0 30px;
}
.au-client-kpi li {
  background: var(--g-mint); border: 1px solid var(--g-mint-2); border-radius: var(--g-r);
  padding: 18px 16px; text-align: center;
}
.au-client-kpi b { display: block; font-size: clamp(24px, 2.6vw, 34px); line-height: 1.1; color: var(--g-green); font-weight: 800; }
.au-client-kpi span { display: block; font-size: 12.5px; color: var(--g-muted); margin-top: 6px; }

.au-client-groups { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.au-client-card {
  background: var(--g-cream); border: 1px solid var(--g-line);
  border-radius: var(--g-r); padding: 24px 24px 26px;
  transition: border-color .25s, box-shadow .25s;
}
.au-client-card:hover { border-color: var(--g-mint-2); box-shadow: var(--g-shadow); }
.au-client-card-hd {
  display: flex; align-items: center; gap: 12px;
  padding-bottom: 15px; margin-bottom: 16px; border-bottom: 1px dashed var(--g-line);
}
.au-client-idx {
  flex: 0 0 auto; display: grid; place-items: center; width: 30px; height: 30px;
  border-radius: 9px; background: var(--g-mint); color: var(--g-green);
  font-size: 11px; font-weight: 800; letter-spacing: .06em;
}
.au-client-card h3 { font-size: 17px; color: var(--g-ink); }
.au-client-count {
  margin-left: auto; flex: 0 0 auto; font-size: 12px; font-weight: 700;
  color: var(--g-green); background: var(--g-mint); padding: 4px 11px; border-radius: 999px;
}
.au-client-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.au-client-tags li {
  font-size: 13px; line-height: 1.45; color: var(--g-text);
  background: #fff; border: 1px solid var(--g-line); border-radius: 999px; padding: 6px 12px;
}
.au-client-note { margin-top: 22px; font-size: 13px; line-height: 1.8; color: var(--g-muted); }

/* ---------- 7. 竞争优势 ---------- */
.au-edges { background: var(--g-sand); }
.au-edge-grid { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 16px; }
.au-edge-card { background: #fff; border-radius: var(--g-r); padding: 28px 22px 30px; border-top: 3px solid var(--g-green); }
.au-edge-n { font-size: 12px; font-weight: 800; letter-spacing: .12em; color: var(--g-green-2); }
.au-edge-card h3 { font-size: 16.5px; line-height: 1.45; margin: 14px 0 11px; color: var(--g-ink); }
.au-edge-card p { font-size: 13.5px; line-height: 1.85; color: var(--g-muted); }

/* ---------- 8. 企业愿景 ---------- */
.au-vision { background: var(--g-deep); color: #fff; padding: clamp(70px, 8vw, 116px) 0; }
.au-vision-grid { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr); gap: clamp(36px, 5vw, 76px); align-items: center; }
.au-vision .g-eyebrow { color: var(--g-leaf); }
.au-vision .g-eyebrow::before { background: var(--g-leaf); }
.au-vision-copy h2 { font-size: clamp(28px, 3.3vw, 44px); line-height: 1.32; color: #fff; margin: 18px 0 22px; }
.au-vision-copy > p { font-size: 15.5px; line-height: 1.95; color: rgba(255,255,255,.78); margin-bottom: 14px; }
.au-vision-copy strong { color: var(--g-leaf); }
.au-vision-tag {
  display: inline-block; margin-top: 12px; padding: 9px 18px; border-radius: 999px;
  border: 1px solid rgba(255,255,255,.28); font-size: 13px; font-weight: 700; color: #fff;
}
.au-vision-contact { display: flex; flex-wrap: wrap; gap: 10px 28px; margin-top: 26px; font-style: normal; font-size: 13.5px; color: rgba(255,255,255,.7); }
.au-vision-contact a { color: var(--g-leaf); font-weight: 700; }
.au-vision-contact a:hover { text-decoration: underline; text-underline-offset: 4px; }
.au-vision-media { margin: 0; }
.au-vision-media img { width: 100%; height: auto; aspect-ratio: 5 / 3.6; object-fit: cover; border-radius: var(--g-r-lg); }
.au-vision-media figcaption { color: rgba(255,255,255,.6); }

/* ---------- 9. FAQ ---------- */
.au-faq-grid { display: grid; grid-template-columns: minmax(0, .76fr) minmax(0, 1.24fr); gap: clamp(36px, 5vw, 76px); align-items: start; }
.au-faq-intro h2 { font-size: clamp(27px, 3vw, 38px); line-height: 1.34; margin: 16px 0 16px; color: var(--g-ink); }
.au-faq-intro > p { font-size: 15px; line-height: 1.85; color: var(--g-muted); margin-bottom: 22px; }
.au-faq-list { display: grid; gap: 12px; }
.au-qa { background: #fff; border: 1px solid var(--g-line); border-radius: var(--g-r); overflow: hidden; }
.au-qa[open] { border-color: var(--g-mint-2); box-shadow: 0 14px 34px -28px rgba(13,47,34,.5); }
.au-qa summary {
  display: flex; align-items: center; gap: 14px; padding: 20px 22px; cursor: pointer;
  font-size: 15.5px; font-weight: 700; color: var(--g-ink); list-style: none;
}
.au-qa summary::-webkit-details-marker { display: none; }
.au-qa-n { font-size: 12px; font-weight: 800; color: var(--g-green-2); flex: 0 0 auto; }
.au-qa-plus { position: relative; margin-left: auto; flex: 0 0 18px; width: 18px; height: 18px; }
.au-qa-plus::before, .au-qa-plus::after {
  content: ""; position: absolute; left: 2px; top: 8px; width: 14px; height: 2px; border-radius: 2px; background: var(--g-green);
}
.au-qa-plus::after { transform: rotate(90deg); transition: transform .25s; }
.au-qa[open] .au-qa-plus::after { transform: rotate(0); }
.au-qa-a { padding: 0 22px 22px 50px; }
.au-qa-a p { font-size: 14.5px; line-height: 1.95; color: var(--g-muted); }

/* ---------- 10. 继续了解 ---------- */
.au-next { background: var(--g-mint); border-top: 1px solid var(--g-line); padding: 26px 0; }
.au-next-in { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 26px; }
.au-next-in > span { font-size: 13px; font-weight: 800; color: var(--g-green); letter-spacing: .06em; margin-right: 6px; }
.au-next-in a { font-size: 14px; font-weight: 600; color: var(--g-text); }
.au-next-in a:hover { color: var(--g-green); text-decoration: underline; text-underline-offset: 5px; }

/* ---------- 响应式 ---------- */
@media (max-width: 1180px) {
  .au-chain-track { grid-template-columns: repeat(4, minmax(0, 1fr)); row-gap: 32px; }
  .au-chain-item::before { display: none; }
  .au-edge-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (max-width: 980px) {
  .au-hero-photo { opacity: .34; -webkit-mask-image: linear-gradient(180deg, transparent 0%, #000 55%); mask-image: linear-gradient(180deg, transparent 0%, #000 55%); width: 100%; }
  .au-biz-grid, .au-vision-grid, .au-client-showcase, .au-faq-grid { grid-template-columns: 1fr; }
  .au-sec-head--split { grid-template-columns: 1fr; gap: 16px; }
  .au-client-media { max-width: 620px; }
  .au-client-groups { grid-template-columns: 1fr; }
  .au-facts { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .au-facts > div:nth-child(3) { border-right: 0; }
  .au-facts > div:nth-child(n+4) { border-top: 1px solid var(--g-line); }
  .au-adv-grid, .au-area-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .au-edge-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 620px) {
  .au-wrap { width: calc(100% - 36px); }
  .au-sec { padding: 62px 0; }
  .au-hero-copy h1 { font-size: 34px; }
  .au-hero-lead { font-size: 16px; }
  .au-hero-photo { opacity: .2; }
  .au-facts { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .au-facts > div { padding: 20px 16px; border-right: 1px solid var(--g-line); border-top: 1px solid var(--g-line); }
  .au-facts > div:nth-child(-n+2) { border-top: 0; }
  .au-facts > div:nth-child(2n) { border-right: 0; }
  .au-chain-track { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .au-adv-grid, .au-area-grid, .au-edge-grid { grid-template-columns: 1fr; }
  .au-biz-media img { aspect-ratio: 4 / 3; }
  .au-client-card { padding: 20px 16px 22px; }
  .au-client-kpi { gap: 8px; }
  .au-client-kpi li { padding: 14px 8px; }
  .au-client-kpi b { font-size: 24px; }
  .au-qa summary { padding: 17px 15px; font-size: 14.5px; gap: 10px; }
  .au-qa-a { padding: 0 15px 18px 15px; }
  .au-next-in { gap: 10px 18px; }
}

/* 窄屏已有底部四宫格客服栏，隐藏右侧浮动客服避免压住正文。
   用 body 前缀提高优先级：theme.css 最后加载，同级 .cs-float 会覆盖本规则。 */
@media (max-width: 760px) {
  body .cs-float { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  .au-adv-card, .au-area-grid a { transition: none; }
  .au-adv-card:hover, .au-area-grid a:hover { transform: none; }
}