/* ============================================================
   龙铭特种作业 · 关于我们 about.css
   签名 S02：120° 渐变分割，左浅右深，内容居右，
            装饰=页面右侧垂直跑马灯窄条（竖排滚动字条）
   ============================================================ */

/* ---------- 首屏 Hero S02 ---------- */
.hero{position:relative;min-height:96vh;display:flex;align-items:center;overflow:hidden;
  background:linear-gradient(120deg,#f4f4f0 0%,#eaeae5 34%,#0b0b0c 52%,#0b0b0c 100%);}
.hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.28;
  -webkit-mask-image:linear-gradient(120deg,transparent 40%,#000 62%);
  mask-image:linear-gradient(120deg,transparent 40%,#000 62%);}
.hero-shade{position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(244,244,240,.0) 0%,rgba(11,11,12,.55) 55%,rgba(11,11,12,.92) 78%);}
/* 右侧垂直跑马灯窄条 */
.hero-ticker{
  position:absolute;top:0;right:0;height:100%;width:52px;z-index:3;
  background:rgba(255,255,255,.06);border-left:1px solid var(--line);
  display:flex;flex-direction:column;justify-content:flex-start;overflow:hidden;gap:24px;
}
.hero-ticker span{
  writing-mode:vertical-rl;font-size:12px;letter-spacing:.3em;color:var(--muted-dark);
  white-space:nowrap;animation:tickUp 26s linear infinite;
}
@keyframes tickUp{from{transform:translateY(0)}to{transform:translateY(-100%)}}
.hero-inner{position:relative;z-index:2;width:min(1200px,92%);margin-inline:auto;
  padding:150px 80px 90px 0;display:flex;flex-direction:column;align-items:flex-end;text-align:right}
.hero-inner .crumbs{justify-content:flex-end;margin-bottom:20px}
.hero-flag{margin-bottom:22px}
.hero-title{font-size:clamp(34px,5.4vw,62px);line-height:1.18;font-weight:900;margin-bottom:20px}
.hero-title .hl{color:#fff;position:relative;white-space:nowrap}
.hero-title .hl::after{content:"";position:absolute;left:0;right:0;bottom:6px;height:14px;z-index:-1;
  background:linear-gradient(120deg,rgba(255,255,255,.22),transparent);transform:skewX(-10deg)}
.hero-lead{max-width:560px;font-size:16.5px;color:var(--muted-dark);margin-bottom:32px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;justify-content:flex-end;margin-bottom:46px}
.hero-stats{display:grid;grid-template-columns:repeat(4,auto);gap:0;max-width:660px;
  border-top:1px solid var(--line);padding-top:24px}
.hs-item{border-right:1px solid var(--line);padding:0 22px;text-align:right}
.hs-item:last-child{border-right:0}
.hs-num{display:block;font-size:clamp(24px,2.6vw,36px);font-weight:900;line-height:1.1}
.hs-txt{font-size:12.5px;color:var(--muted-dark);letter-spacing:.06em}

/* ---------- 我们干什么（浅底） ---------- */
.mission-sec{background:var(--paper);color:var(--txt-on-light)}
.mission-sec .t-en{color:var(--muted-light)}
.mission-sec .sec-sub{color:var(--muted-light)}
.mission-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.mission-grid p{
  font-size:15.5px;line-height:2;color:var(--muted-light);padding:28px 26px;
  background:#fff;border:1px solid var(--line-dark);border-radius:12px;position:relative;
}
.mission-grid p::before{content:"";position:absolute;left:26px;top:0;width:40px;height:3px;background:#0b0b0c}

/* ---------- 两段话 + 图 ---------- */
.story-sec{background:var(--ink)}
.story-cols{display:grid;grid-template-columns:1fr 1.15fr;gap:48px;align-items:start}
.story-img{position:relative}
.story-img img{width:100%;height:420px;object-fit:cover;border-radius:12px}
.story-img::after{content:"";position:absolute;left:-14px;bottom:-14px;width:120px;height:120px;
  border:1px solid rgba(255,255,255,.18);border-radius:12px;z-index:-1}
.story-img figcaption{margin-top:16px;font-size:13px;color:var(--muted-dark)}
.story-text h3{font-size:20px;font-weight:800;margin:22px 0 10px}
.story-text h3:first-child{margin-top:0}
.story-text p{font-size:15px;color:var(--muted-dark);line-height:1.95}
.story-text a{color:#fff;border-bottom:1px solid rgba(255,255,255,.4)}

/* ---------- 服务区域 ---------- */
.area-sec{background:var(--ink-2)}
.area-grid{display:grid;grid-template-columns:1fr 1fr;gap:26px}
.area-card{
  padding:40px 38px;border-radius:14px;background:var(--ink);border:1px solid var(--line);
  position:relative;overflow:hidden;transition:.4s var(--ease);display:block;
}
.area-card::after{content:"";position:absolute;right:-40px;top:-40px;width:160px;height:160px;
  border-radius:50%;background:radial-gradient(circle,rgba(255,255,255,.08),transparent 70%)}
.area-card:hover{transform:translateY(-6px);border-color:rgba(255,255,255,.32)}
.area-tag{display:inline-block;font-size:12px;font-weight:800;letter-spacing:.2em;
  color:#000;background:#fff;border-radius:4px;padding:5px 14px;margin-bottom:18px}
.area-card h3{font-size:23px;font-weight:900;margin-bottom:12px}
.area-card p{font-size:14.5px;color:var(--muted-dark);line-height:1.9;margin-bottom:20px}
.area-go{font-size:14px;font-weight:700;border-bottom:1px solid rgba(255,255,255,.4);padding-bottom:3px}

/* ---------- 我们的做法 ---------- */
.way-sec{background:var(--ink)}
.way-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;counter-reset:way}
.way-card{padding:32px 26px;border-radius:12px;background:var(--ink-2);
  border:1px solid var(--line);transition:.35s var(--ease)}
.way-card:hover{border-color:rgba(255,255,255,.3);transform:translateY(-4px)}
.way-no{display:block;font-size:44px;font-weight:900;color:transparent;
  -webkit-text-stroke:1px rgba(255,255,255,.2);line-height:1;margin-bottom:16px}
.way-card h3{font-size:18px;font-weight:800;margin-bottom:8px}
.way-card p{font-size:14px;color:var(--muted-dark);line-height:1.85}
.way-extra{margin-top:36px;font-size:15px;color:var(--muted-dark);text-align:center}
.way-extra a{color:#fff;border-bottom:1px solid rgba(255,255,255,.4)}

/* ---------- 底部 CTA ---------- */
.cta-sec{background:var(--ink-2)}
.cta-strip{background:var(--ink);color:#fff;border-radius:18px;padding:50px 56px;
  display:flex;align-items:center;justify-content:space-between;gap:30px;flex-wrap:wrap;
  position:relative;overflow:hidden}
.cta-strip::before{content:"";position:absolute;left:-50px;top:-50px;width:220px;height:220px;
  border:1px solid rgba(255,255,255,.14);border-radius:50%}
.cta-strip h2{font-size:clamp(22px,2.8vw,32px);font-weight:900;margin-bottom:8px}
.cta-strip p{color:var(--muted-dark);font-size:14.5px}
.cta-btns{display:flex;gap:14px;flex-wrap:wrap;position:relative;z-index:1}

/* ---------- 响应式 ---------- */
@media (max-width:1280px){.way-grid{grid-template-columns:1fr 1fr}}
@media (max-width:1024px){
  .mission-grid{grid-template-columns:1fr}
  .story-cols{grid-template-columns:1fr;gap:36px}
  .story-img img{height:320px}
}
@media (max-width:768px){
  .hero{background:var(--ink)}
  .hero-shade{background:rgba(11,11,12,.55)}
  .hero-ticker{display:none}
  .hero-inner{align-items:flex-start;text-align:left;padding:140px 0 70px}
  .hero-inner .crumbs{justify-content:flex-start}
  .hero-cta{justify-content:flex-start}
  .hero-stats{grid-template-columns:1fr 1fr;gap:14px;width:100%}
  .hs-item{text-align:left;padding:0 0 0 14px;border-right:0;border-left:1px solid var(--line)}
  .area-grid{grid-template-columns:1fr}
  .way-grid{grid-template-columns:1fr}
  .cta-strip{padding:36px 26px}
}
@media (max-width:480px){
  .hero-stats{grid-template-columns:1fr 1fr}
  .mission-grid p{padding:22px 18px}
}

/* ============================================================
   R2 重构新增模块样式（仅本页使用）
   ============================================================ */

/* ---------- 服务链路 问审报跟 ---------- */
.chain-sec{background:var(--paper);color:var(--txt-on-light)}
.chain-sec .t-en{color:var(--muted-light)}
.chain-sec .sec-sub{color:var(--muted-light)}
.chain-layout{display:grid;grid-template-columns:1fr 1.25fr;gap:48px;align-items:start}
.chain-img{position:sticky;top:96px}
.chain-img img{width:100%;height:460px;object-fit:cover;border-radius:14px}
.chain-img figcaption{margin-top:14px;font-size:13px;color:var(--muted-light)}
.chain-list{display:flex;flex-direction:column;gap:14px}
.chain-step{
  display:flex;gap:20px;align-items:flex-start;background:#fff;border:1px solid var(--line-dark);
  border-radius:12px;padding:22px 24px;
}
.cs-no{
  flex:none;width:52px;height:52px;border-radius:10px;background:#0b0b0c;color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:22px;font-weight:900;
}
.chain-step h3{font-size:17.5px;font-weight:800;margin-bottom:6px}
.chain-step p{font-size:14.5px;color:var(--muted-light);line-height:1.9}

/* ---------- 服务理念卡 ---------- */
.belief-sec{background:var(--ink)}
.belief-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.belief-card{padding:36px 30px;border-radius:14px;background:var(--ink-2);border:1px solid var(--line);position:relative;overflow:hidden;transition:.4s var(--ease)}
.belief-card:hover{transform:translateY(-6px);border-color:rgba(255,255,255,.3)}
.bc-no{font-size:40px;font-weight:900;color:transparent;-webkit-text-stroke:1px rgba(255,255,255,.28);line-height:1;display:block;margin-bottom:18px}
.belief-card h3{font-size:20px;font-weight:800;margin-bottom:10px}
.belief-card p{font-size:14.5px;color:var(--muted-dark);line-height:1.95}

/* ---------- 对比表 ---------- */
.diff-sec{background:var(--paper);color:var(--txt-on-light)}
.diff-sec .t-en{color:var(--muted-light)}
.diff-sec .sec-sub{color:var(--muted-light)}
.diff-table{overflow-x:auto;border:1px solid var(--line-dark);border-radius:14px;background:#fff}
.diff-table table{width:100%;border-collapse:collapse;table-layout:fixed}
.diff-table col.dc-label{width:18%}
.diff-table col.dc-us{width:41%}
.diff-table col.dc-other{width:41%}
.diff-table th,.diff-table td{padding:18px 20px;text-align:left;vertical-align:top;border-bottom:1px solid var(--line-dark);font-size:14.5px;line-height:1.85}
.diff-table tbody tr:last-child td{border-bottom:0}
.diff-table thead th{background:#0b0b0c;color:#fff;font-size:14px;letter-spacing:.04em}
.diff-table tbody td:first-child{font-weight:800;color:#0b0b0c;white-space:nowrap}
.diff-table tbody td:nth-child(2){color:#17171a}
.diff-table tbody td:nth-child(3){color:var(--muted-light)}
.diff-note{margin-top:22px;font-size:14px;color:var(--muted-light);text-align:center}

/* ---------- 团队分工 ---------- */
.team-sec{background:var(--ink)}
.team-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.team-card{padding:30px 24px;border-radius:12px;background:var(--ink-2);border:1px solid var(--line)}
.tc-role{display:inline-block;font-size:12px;font-weight:800;letter-spacing:.16em;color:#000;background:#fff;border-radius:4px;padding:4px 12px;margin-bottom:16px}
.team-card h3{font-size:17px;font-weight:800;margin-bottom:8px}
.team-card p{font-size:14px;color:var(--muted-dark);line-height:1.85}
.team-card a{color:#fff;border-bottom:1px solid rgba(255,255,255,.4)}

/* ---------- 数字带 6 项 ---------- */
.stats-sec{background:var(--ink-2)}
.stats-band{display:grid;grid-template-columns:repeat(6,1fr);gap:0;border:1px solid var(--line);border-radius:14px;overflow:hidden}
.sb-item{padding:30px 18px;text-align:center;border-right:1px solid var(--line)}
.sb-item:last-child{border-right:0}
.sb-num{display:block;font-size:clamp(24px,2.6vw,38px);font-weight:900;line-height:1.1}
.sb-txt{display:block;margin-top:8px;font-size:12.5px;color:var(--muted-dark)}
.stats-note{margin-top:20px;font-size:13.5px;color:var(--muted-dark);text-align:center}

/* ---------- 学员口碑 ---------- */
.voice-sec{background:var(--ink)}
.voice-grid{display:grid;grid-template-columns:1fr 1fr;gap:26px}
.voice-card{padding:36px 34px;border-radius:14px;background:var(--ink-2);border:1px solid var(--line);position:relative}
.vc-q{display:block;font-size:19px;font-weight:800;line-height:1.5;margin-bottom:14px}
.vc-q::before{content:"\201C";font-size:34px;line-height:0;vertical-align:-10px;margin-right:4px;color:rgba(255,255,255,.3)}
.voice-card p{font-size:14.5px;color:var(--muted-dark);line-height:1.95;margin-bottom:18px}
.vc-meta{display:inline-block;font-size:12.5px;letter-spacing:.1em;color:var(--muted-dark);border:1px solid var(--line);border-radius:999px;padding:6px 14px}
.voice-foot{margin-top:22px;font-size:12.5px;color:var(--muted-dark);text-align:center}

/* ---------- FAQ ---------- */
.faq-sec{background:var(--paper);color:var(--txt-on-light)}
.faq-sec .t-en{color:var(--muted-light)}
.faq-list{display:flex;flex-direction:column;gap:14px;max-width:900px}
.faq-item{background:#fff;border:1px solid var(--line-dark);border-radius:12px;padding:0 24px}
.faq-item summary{cursor:pointer;list-style:none;font-size:16.5px;font-weight:800;padding:20px 0;position:relative}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";position:absolute;right:0;top:50%;transform:translateY(-50%);font-size:22px;font-weight:400;color:var(--muted-light)}
.faq-item[open] summary::after{content:"\2212"}
.faq-item p{font-size:14.5px;color:var(--muted-light);line-height:1.9;padding:0 0 20px}
.faq-item p a{color:#0b0b0c;border-bottom:1px solid rgba(11,11,12,.4)}

/* ---------- 响应式（R2 新增模块） ---------- */
@media (max-width:1080px){
  .chain-layout{grid-template-columns:1fr;gap:30px}
  .chain-img{position:static}
  .chain-img img{height:300px}
  .belief-grid{grid-template-columns:1fr}
  .team-grid{grid-template-columns:1fr 1fr}
  .stats-band{grid-template-columns:1fr 1fr 1fr}
  .sb-item{border-bottom:1px solid var(--line)}
  .voice-grid{grid-template-columns:1fr}
}
@media (max-width:640px){
  .team-grid{grid-template-columns:1fr}
  .stats-band{grid-template-columns:1fr 1fr}
  .chain-step{padding:18px}
  .cs-no{width:42px;height:42px;font-size:18px}
}