:root{
  --bg:#ffffff;
  --text:#0b0b0d;
  --muted:#5b5f66;
  --line:rgba(15,15,20,.10);
  --soft:rgba(15,15,20,.06);
  --card:#fbfbfc;

  --shadow: 0 10px 30px rgba(15,15,20,.06);
  --shadow2: 0 10px 22px rgba(15,15,20,.10);

  --radius:18px;
  --radius2:14px;

  --max:1120px;
  --pad:24px;

  /* Banner 高度：你想更“撑”就调这里 */
  --banner-h: 420px;
  --banner-h-md: 340px;
  --banner-h-sm: 260px;
}

*{ box-sizing:border-box; }
html,body{ height:100%; }
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

a{ color:inherit; text-decoration:none; }
.container{ max-width:var(--max); margin:0 auto; padding:0 var(--pad); }

/* 顶部导航 */
header{
  position:sticky;
  top:0;
  z-index:20;
  background:rgba(255,255,255,.70);
  backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid var(--line);
}
.nav{
  height:76px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
}
.brand{
  display:flex; align-items:center; gap:10px;
  font-weight:760;
  letter-spacing:.2px;
}
.mark{
  width:10px; height:10px; border-radius:999px;
  background:var(--text);
  box-shadow:0 0 0 6px rgba(0,0,0,.04);
}
nav{ display:flex; align-items:center; gap:6px; }
.navlink{
  font-size:14px;
  color:var(--muted);
  padding:10px 12px;
  border-radius:999px;
  transition: background .18s ease, color .18s ease, transform .18s ease;
}
.navlink:hover{ background:rgba(0,0,0,.04); color:var(--text); }
.navlink:active{ transform:scale(.98); }
.navlink.active{ background:var(--text); color:#fff; }
.navlink:focus-visible{
  outline:none;
  box-shadow:0 0 0 3px rgba(0,0,0,.18);
}

/* 页面容器（注意：main 不再强制 container，方便 full-bleed） */
.page{
  padding:8px 0 18px;
}

/* ============== Banner ============== */
.banner{
  position:relative;
  width:100%;
  height:var(--banner-h);
  margin:0 0 18px;
  border-radius:24px;
  overflow:hidden;
  border:1px solid var(--line);
  background:
    radial-gradient(900px 320px at 20% 0%, rgba(0,0,0,.10), transparent 60%),
    radial-gradient(700px 300px at 80% 30%, rgba(0,0,0,.07), transparent 60%),
    linear-gradient(180deg, #ffffff, #fafafb);
  box-shadow: var(--shadow);
}

/* ✅ Full-bleed：撑满屏幕两端 */
.banner--full{
  width: 100vw;
  max-width: 100%;
  margin-left: calc(50% - 50vw);
  margin-right: calc(50% - 50vw);
  border-radius: 0;              /* 全宽通常不做圆角，你要圆角也可以改回 24px */
  border-left: 0;
  border-right: 0;
}

/* Canvas 覆盖整个 banner */
.banner-canvas{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  display:block;
}

/* Overlay 内容层 */
.banner-overlay{
  position:absolute;
  inset:0;
  display:flex;
  align-items:center;
  justify-content:center;
  padding:32px;
}
.banner-inner{
  width:100%;
}

.banner-kicker{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:8px 12px;
  border:1px solid var(--line);
  border-radius:999px;
  background:rgba(255,255,255,.75);
  font-size:13px;
  color:rgba(0,0,0,.75);
  backdrop-filter: blur(10px);
}
.banner-kicker i{
  width:8px; height:8px; border-radius:99px;
  background:rgba(0,0,0,.70);
  display:inline-block;
}

.banner-title{
  margin:14px 0 10px;
  font-size:52px;
  line-height:1.05;
  letter-spacing:-1px;
}
.banner-sub{
  margin:0;
  color:var(--muted);
  font-size:15px;
  max-width:780px;
}
.banner-actions{
  margin-top:18px;
  display:flex;
  gap:10px;
  flex-wrap:wrap;
}

/* 按钮 */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding:12px 16px;
  border-radius:14px;
  border:1px solid var(--line);
  background:#fff;
  color:var(--text);
  font-size:14px;
  font-weight:650;
  transition: transform .18s ease, box-shadow .18s ease, background .18s ease, border-color .18s ease;
  user-select:none;
}
.btn:hover{
  box-shadow:var(--shadow2);
  border-color:rgba(0,0,0,.18);
  transform: translateY(-1px);
}
.btn:active{ transform: translateY(0); box-shadow:none; }
.btn:focus-visible{ outline:none; box-shadow:0 0 0 3px rgba(0,0,0,.18); }
.btn.primary{
  background:var(--text);
  color:#fff;
  border-color:var(--text);
}

/* 标题/段落 */
.h1{
  margin:0 0 8px;
  font-size:34px;
  letter-spacing:-.4px;
  line-height:1.2;
}
.lead{
  margin:0;
  color:var(--muted);
  font-size:15px;
  max-width:860px;
}

.divider{
  height:1px;
  background:linear-gradient(90deg, transparent, var(--line), transparent);
  margin:24px 0;
}

.section{
  padding:16px 0 28px;
}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:16px;
  margin-bottom:14px;
}
.section-title{
  margin:0;
  font-size:18px;
  letter-spacing:-.2px;
}
.section-sub{
  margin:0;
  color:var(--muted);
  font-size:13px;
  max-width:520px;
  text-align:right;
}

/* 卡片 */
.cards{
  display:grid;
  grid-template-columns:repeat(3, 1fr);
  gap:14px;
}
.card{
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:var(--card);
  box-shadow: 0 1px 0 rgba(0,0,0,.02);
  padding:18px;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
  min-height: 160px;
}
.card:hover{
  transform: translateY(-2px);
  box-shadow: var(--shadow);
  border-color: rgba(0,0,0,.16);
}
.card .top{
  display:flex;
  align-items:center;
  justify-content:space-between;
  margin-bottom:10px;
}
.icon{
  width:34px; height:34px;
  border-radius:12px;
  border:1px solid var(--line);
  background:#fff;
  display:flex; align-items:center; justify-content:center;
  color:rgba(0,0,0,.72);
  font-weight:800;
  letter-spacing:-.5px;
}
.card h3{ margin:0; font-size:15px; letter-spacing:-.2px; }
.card p{ margin:8px 0 0; color:var(--muted); font-size:13px; }

.grid-2{
  display:grid;
  grid-template-columns:repeat(2, 1fr);
  gap:14px;
}
.panel{
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:linear-gradient(180deg,#fff,#fafafb);
  box-shadow:var(--shadow);
  padding:18px;
}

/* 案例 */
.case-grid{
  display:grid;
  grid-template-columns:repeat(2, 1fr);
  gap:14px;
  margin-top:16px;
}
.case{
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:var(--card);
  box-shadow: 0 1px 0 rgba(0,0,0,.02);
  padding:18px;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
  min-height: 220px;
  display:flex;
  flex-direction:column;
}
.case:hover{
  transform: translateY(-2px);
  box-shadow: var(--shadow);
  border-color: rgba(0,0,0,.16);
}
.meta{ display:flex; gap:8px; flex-wrap:wrap; margin-bottom:10px; }
.tag{
  font-size:12px;
  padding:6px 10px;
  border-radius:999px;
  border:1px solid var(--line);
  background:#fff;
  color:rgba(0,0,0,.74);
}
.case h3{ margin:0 0 8px; font-size:16px; letter-spacing:-.2px; }
.case p{ margin:6px 0; color:var(--muted); font-size:13px; }
.case p b{ color:rgba(0,0,0,.78); }
.result{
  margin-top:auto;
  padding-top:12px;
  border-top:1px solid var(--line);
  color:rgba(0,0,0,.78);
  font-size:13px;
}

/* 页脚 */
footer{
  margin-top:36px;
  border-top:1px solid var(--line);
  padding:24px 0 40px;
  color:var(--muted);
  font-size:13px;
}
.footer-row{
  display:flex;
  justify-content:space-between;
  gap:12px;
  flex-wrap:wrap;
  align-items:center;
}
.email{
  color:var(--text);
  border-bottom:1px solid rgba(0,0,0,.25);
}
.email:hover{ border-bottom-color:rgba(0,0,0,.6); }

/* ========= 自动响应式断点 ========= */
@media (max-width: 1024px){
  :root{ --banner-h: var(--banner-h-md); }
  .banner-title{ font-size:44px; }
  .cards{ grid-template-columns:repeat(2, 1fr); }
}

@media (max-width: 760px){
  :root{ --banner-h: var(--banner-h-sm); --pad:18px; }
  .nav{ height:70px; }
  .banner-overlay{ padding:18px; }
  .banner-title{ font-size:32px; }
  .banner-sub{ font-size:14px; }
  .section-head{ align-items:flex-start; }
  .section-sub{ text-align:left; }
  .cards{ grid-template-columns:1fr; }
  .grid-2{ grid-template-columns:1fr; }
  .case-grid{ grid-template-columns:1fr; }
}

/* 低动态偏好 */
@media (prefers-reduced-motion: reduce){
  .btn, .card, .case, .navlink{ transition:none !important; }
}

/* ===== Services Pro (About) ===== */
.services--pro{ padding:22px; }
.services--pro .services-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:16px;
  margin-bottom:14px;
}
.services--pro .services-title{
  margin:0;
  font-size:16px;
  letter-spacing:-.2px;
}
.services--pro .services-sub{
  margin:0;
  color:var(--muted);
  font-size:13px;
  max-width:520px;
  text-align:right;
}

/* 3-column cards */
.services--pro .services-grid{
  display:grid;
  grid-template-columns:repeat(3, 1fr);
  gap:12px;
}
.services--pro .service-item{
  border:1px solid var(--line);
  background:
    radial-gradient(700px 220px at 20% 0%, rgba(0,0,0,.05), transparent 60%),
    linear-gradient(180deg, #ffffff, #fbfbfc);
  border-radius:var(--radius);
  padding:16px;
  box-shadow: 0 1px 0 rgba(0,0,0,.02);
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.services--pro .service-item:hover{
  transform: translateY(-2px);
  box-shadow: var(--shadow);
  border-color: rgba(0,0,0,.16);
}

/* icon + text */
.services--pro .service-top{
  display:flex;
  align-items:center;
  gap:12px;
  margin-bottom:10px;
}
.services--pro .service-icon{
  width:40px;
  height:40px;
  border-radius:14px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.8);
  display:flex;
  align-items:center;
  justify-content:center;
  box-shadow: 0 8px 18px rgba(15,15,20,.06);
}
.services--pro .service-icon svg{
  width:22px;
  height:22px;
}
.services--pro .service-icon svg path{
  stroke: rgba(0,0,0,.75);
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* titles */
.services--pro .service-name{
  font-size:14px;
  font-weight:750;
  letter-spacing:-.2px;
  line-height:1.2;
}
.services--pro .service-meta{
  margin-top:4px;
  font-size:12px;
  color:rgba(0,0,0,.52);
  letter-spacing:.2px;
}

/* description */
.services--pro .service-desc{
  font-size:13px;
  color:var(--muted);
  line-height:1.7;
}
.services--pro .service-desc b{ color:rgba(0,0,0,.82); }

/* responsive */
@media (max-width: 1024px){
  .services--pro .services-grid{ grid-template-columns:1fr; }
  .services--pro .services-sub{ text-align:left; }
}