:root{
  --bg:#f4f6fb;
  --bg-soft:#ffffff;
  --panel:#ffffff;
  --panel-soft:rgba(255,255,255,.8);
  --text:#0b1220;
  --text-2:#2a3850;
  --muted:#64748b;
  --line:rgba(16,24,40,.1);
  --brand:#ff6900;
  --brand-soft:rgba(255,105,0,.12);
  --accent:#2f7cff;
  --ok:#18b26b;
  --warn:#f59e0b;
  --shadow:0 24px 70px rgba(16,24,40,.08);
  --shadow-soft:0 16px 46px rgba(16,24,40,.06);
  --radius:24px;
  --radius-sm:16px;
  --font:"Microsoft YaHei","Segoe UI",system-ui,-apple-system,sans-serif;
  --display:"Bahnschrift","Microsoft YaHei","Segoe UI",system-ui,-apple-system,sans-serif;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  min-height:100vh;
  color:var(--text);
  font-family:var(--font);
  background:
    radial-gradient(760px 440px at 10% 8%, rgba(47,124,255,.08), transparent 60%),
    radial-gradient(680px 420px at 90% 10%, rgba(255,105,0,.08), transparent 55%),
    linear-gradient(180deg, #fbfcff 0%, #f6f8fb 52%, #f3f5f9 100%);
}

a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}

.page-shell{width:min(1240px,calc(100vw - 40px));margin:0 auto;padding:20px 0 44px}

.page-top{
  position:sticky;
  top:0;
  z-index:30;
  margin-bottom:28px;
  border:1px solid var(--line);
  border-radius:999px;
  background:rgba(255,255,255,.86);
  backdrop-filter:saturate(140%) blur(10px);
  box-shadow:var(--shadow-soft);
}
.page-bar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:12px 18px;
}
.brand{
  display:flex;
  align-items:center;
  gap:12px;
  font-family:var(--display);
  font-size:18px;
}
.brand-mark{
  width:38px;
  height:38px;
  border-radius:14px;
  background:var(--brand);
  box-shadow:0 14px 34px rgba(255,105,0,.2);
  display:grid;
  place-items:center;
  color:#fff;
}
.brand-mark svg{width:22px;height:22px;display:block}

.page-nav{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
}
.page-nav a,
.btn,
.ghost{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:42px;
  padding:0 16px;
  border-radius:999px;
  border:1px solid var(--line);
  font-size:14px;
}
.page-nav a,.ghost{background:rgba(255,255,255,.76);color:var(--text-2)}
.page-nav a:hover,.ghost:hover{background:rgba(16,24,40,.04)}
.btn{
  background:var(--brand);
  border-color:transparent;
  color:#fff;
  box-shadow:0 16px 40px rgba(255,105,0,.18);
}

.hero{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:18px;
  align-items:stretch;
}
.hero-card,
.section-card{
  border-radius:var(--radius);
  border:1px solid var(--line);
  background:var(--panel-soft);
  box-shadow:var(--shadow);
}
.hero-copy{
  padding:34px;
  display:flex;
  flex-direction:column;
  justify-content:space-between;
  gap:18px;
}
.eyebrow{
  color:var(--muted);
  text-transform:uppercase;
  letter-spacing:.18em;
  font-size:12px;
}
h1,h2,h3{
  margin:0;
  font-family:var(--display);
}
h1{font-size:clamp(34px,4.8vw,56px);line-height:1.08}
h2{font-size:28px}
h3{font-size:18px}
p{margin:0;color:var(--text-2);line-height:1.8}
.lead{font-size:15px;color:var(--muted)}

.stat-row,.tag-row,.link-row{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
}
.tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:10px 12px;
  border-radius:999px;
  border:1px solid var(--line);
  background:#fff;
  color:var(--text-2);
  font-size:12px;
}
.tag::before{
  content:"";
  width:8px;
  height:8px;
  border-radius:50%;
  background:var(--brand);
  box-shadow:0 0 0 3px rgba(255,105,0,.14);
}
.hero-panel{
  padding:22px;
  display:flex;
  flex-direction:column;
  gap:18px;
}
.hero-visual{
  min-height:260px;
  border-radius:20px;
  overflow:hidden;
  background:linear-gradient(135deg,#f8f9fd,#fff4ec);
}
.hero-visual img{width:100%;height:100%;object-fit:cover}

.auth-shell{
  width:min(560px,calc(100vw - 40px));
  margin:0 auto;
  min-height:100vh;
  padding:32px 0 40px;
  display:grid;
  align-content:start;
  gap:22px;
}
.auth-top{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
}
.auth-back{
  display:inline-flex;
  align-items:center;
  min-height:40px;
  padding:0 14px;
  border-radius:999px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.78);
  color:var(--text-2);
  font-size:14px;
}
.auth-back:hover{
  background:rgba(16,24,40,.04);
}
.auth-layout{
  display:block;
}
.auth-aside,
.auth-card{
  border-radius:28px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.84);
  box-shadow:var(--shadow-soft);
}
.auth-aside{
  padding:32px;
  display:grid;
  align-content:space-between;
  gap:22px;
}
.auth-card{
  padding:30px;
  display:grid;
  gap:16px;
}
.auth-card.compact{
  padding:32px 30px 26px;
}
.auth-copy{
  display:grid;
  gap:12px;
}
.auth-copy h1{
  font-size:clamp(32px,4vw,46px);
  line-height:1.08;
}
.auth-copy .lead{
  max-width:36ch;
}
.auth-points{
  list-style:none;
  margin:0;
  padding:0;
  display:grid;
  gap:10px;
}
.auth-points li{
  position:relative;
  padding-left:18px;
  color:var(--text-2);
  line-height:1.75;
}
.auth-points li::before{
  content:"";
  position:absolute;
  left:0;
  top:11px;
  width:7px;
  height:7px;
  border-radius:50%;
  background:var(--brand);
}
.auth-form-head{
  display:grid;
  gap:6px;
}
.auth-form-head h2{
  font-size:30px;
  line-height:1.12;
}
.auth-links{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  color:var(--muted);
  font-size:13px;
}
.auth-links a{
  color:var(--text-2);
}
.auth-links a:hover{
  text-decoration:underline;
}
.auth-card .note{
  padding:0;
  border:0;
  border-radius:0;
  background:transparent;
}

.section{
  margin-top:18px;
}
.section-card{padding:26px}
.section-card.simple{
  max-width:920px;
  margin:0 auto;
  background:#fff;
  box-shadow:var(--shadow-soft);
}
.section-card.simple.wide{
  max-width:1040px;
}
.section-card.flat{
  max-width:1040px;
  margin:0 auto;
  padding:34px;
  border:0;
  border-radius:28px;
  background:rgba(255,255,255,.58);
  box-shadow:none;
}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:16px;margin-bottom:16px}
.section-desc{max-width:78ch;color:var(--muted)}
.simple-copy{
  display:grid;
  gap:14px;
}
.info-layout{
  display:grid;
  grid-template-columns:220px minmax(0,1fr);
  gap:28px;
  align-items:start;
}
.side-list{
  position:sticky;
  top:92px;
  display:grid;
  gap:8px;
}
.side-list.plain{
  gap:4px;
  padding-right:20px;
  border-right:1px solid rgba(16,24,40,.08);
}
.side-caption{
  margin-bottom:10px;
  color:var(--muted);
  font-size:11px;
  letter-spacing:.16em;
  text-transform:uppercase;
}
.side-item{
  display:block;
  padding:10px 12px;
  border-radius:12px;
  color:var(--muted);
  background:rgba(16,24,40,.03);
}
.side-item:hover{
  color:var(--text);
  background:rgba(16,24,40,.06);
}
.side-item.plain{
  padding:7px 0;
  border-radius:0;
  background:transparent;
  color:var(--muted);
  font-size:13px;
  line-height:1.6;
}
.side-item.plain:hover{
  background:transparent;
  color:var(--text);
}
.content-stack{
  display:grid;
  gap:24px;
}
.content-stack.flat{
  gap:32px;
}
.content-block{
  display:grid;
  gap:12px;
  padding-bottom:24px;
  border-bottom:1px solid var(--line);
}
.content-block:last-child{
  padding-bottom:0;
  border-bottom:0;
}
.content-block.plain{
  gap:14px;
  padding:0;
  border-bottom:0;
}
.content-block p{
  color:var(--text-2);
}
.content-block.plain h1{
  font-size:clamp(36px,4.4vw,54px);
  line-height:1.06;
}
.content-block.plain h2{
  font-size:32px;
  line-height:1.14;
}
.content-block.plain .lead{
  max-width:54ch;
  font-size:16px;
  line-height:1.95;
}
.content-note{
  color:var(--muted);
  font-size:13px;
  line-height:1.8;
}
.cta-strip{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  padding-top:16px;
  border-top:1px solid rgba(16,24,40,.08);
}
.case-list{
  list-style:none;
  margin:0;
  padding:0;
  display:grid;
  gap:16px;
}
.case-item{
  display:grid;
  gap:10px;
  padding-bottom:18px;
  border-bottom:1px solid rgba(16,24,40,.08);
}
.case-item:last-child{
  padding-bottom:0;
  border-bottom:0;
}
.case-title{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
}
.case-title strong{
  font-family:var(--display);
  font-size:22px;
  line-height:1.2;
}
.case-badge{
  display:inline-flex;
  align-items:center;
  min-height:28px;
  padding:0 10px;
  border-radius:999px;
  background:rgba(255,105,0,.08);
  color:var(--brand);
  font-size:12px;
}
.solution-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:18px;
}
.solution-card{
  display:grid;
  gap:14px;
  padding:18px;
  border-radius:22px;
  border:1px solid rgba(16,24,40,.08);
  background:rgba(255,255,255,.76);
}
.solution-cover{
  aspect-ratio:16/9;
  border-radius:18px;
  overflow:hidden;
  background:#f3f5f9;
}
.solution-cover img,
.solution-cover svg{
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
}
.solution-card h3{
  font-size:24px;
  line-height:1.18;
}
.solution-card p{
  color:var(--muted);
}
.solution-meta{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
}
.solution-link{
  color:var(--brand);
  font-size:14px;
}
.solution-link:hover{
  text-decoration:underline;
}
.direction-stack{
  display:grid;
  gap:28px;
}
.direction-card{
  display:grid;
  gap:18px;
  padding:20px;
  border-radius:24px;
  border:1px solid rgba(16,24,40,.08);
  background:rgba(255,255,255,.72);
}
.direction-head{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
}
.direction-head p{
  max-width:72ch;
  color:var(--muted);
}
.direction-tag{
  display:inline-flex;
  align-items:center;
  min-height:30px;
  padding:0 12px;
  border-radius:999px;
  background:rgba(47,124,255,.08);
  color:#2f5ea8;
  font-size:12px;
}
.preview-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:16px;
}
.preview-card{
  display:grid;
  gap:12px;
  padding:14px;
  border-radius:20px;
  border:1px solid rgba(16,24,40,.08);
  background:#fff;
}
.preview-card h3{
  font-size:18px;
}
.preview-note{
  color:var(--muted);
  font-size:13px;
  line-height:1.75;
}
.detail-media{
  aspect-ratio:16/8;
  border-radius:22px;
  overflow:hidden;
  background:#f3f5f9;
}
.detail-media img,
.detail-media svg{
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
}
.illu-bg{
  fill:url(#bgGradient);
}
.illu-panel{
  fill:rgba(255,255,255,.78);
  stroke:rgba(18,30,58,.10);
  stroke-width:1.2;
}
.illu-line{
  stroke:#5c6f91;
  stroke-width:2.2;
  stroke-linecap:round;
}
.illu-soft{
  fill:#e9eef7;
}
.illu-brand{
  fill:#ff6900;
}
.illu-brand-soft{
  fill:#ffd8bf;
}
.illu-text{
  fill:#31405d;
}
.illu-label{
  fill:#31405d;
  font-size:20px;
  font-weight:600;
}
.illu-small{
  fill:#5c6f91;
  font-size:15px;
}
.plain-list{
  list-style:none;
  margin:0;
  padding:0;
  display:grid;
  display:grid;
  gap:12px;
}
.plain-list li{
  padding:0 0 12px;
  border-bottom:1px solid var(--line);
  color:var(--text-2);
  line-height:1.8;
}
.plain-list li:last-child{
  padding-bottom:0;
  border-bottom:0;
}

.grid-2,.grid-3{
  display:grid;
  gap:16px;
}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.split-grid{
  display:grid;
  grid-template-columns:1.08fr .92fr;
  gap:16px;
}

.feature{
  border-radius:var(--radius-sm);
  border:1px solid var(--line);
  background:#fff;
  padding:20px;
  box-shadow:var(--shadow-soft);
}
.feature ul{
  list-style:none;
  margin:12px 0 0;
  padding:0;
  display:grid;
  gap:10px;
}
.feature li{
  position:relative;
  padding-left:18px;
  color:var(--text-2);
  line-height:1.75;
}
.feature li::before{
  content:"";
  position:absolute;
  left:0;
  top:10px;
  width:8px;
  height:8px;
  border-radius:2px;
  background:var(--brand);
}

.form{
  display:grid;
  gap:14px;
}
.field{display:grid;gap:8px}
.field label{font-size:13px;color:var(--muted)}
.field input,.field textarea{
  width:100%;
  min-height:48px;
  padding:12px 14px;
  border-radius:14px;
  border:1px solid var(--line);
  background:#fff;
  color:var(--text);
  font:inherit;
}
.field textarea{min-height:108px;resize:vertical}
.field input:focus,
.field textarea:focus{
  outline:none;
  border-color:rgba(255,105,0,.36);
  box-shadow:0 0 0 4px rgba(255,105,0,.08);
}

.form-actions{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:4px;
}
.note{
  padding:14px 16px;
  border-radius:14px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.78);
  color:var(--muted);
  line-height:1.75;
  font-size:13px;
}
.stat-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:12px;
}
.stat{
  border-radius:16px;
  border:1px solid var(--line);
  background:#fff;
  padding:16px;
  box-shadow:var(--shadow-soft);
}
.stat strong{
  display:block;
  font-family:var(--display);
  font-size:22px;
  line-height:1.1;
}
.stat span{
  display:block;
  margin-top:6px;
  color:var(--muted);
  font-size:13px;
  line-height:1.65;
}
.process{
  list-style:none;
  margin:0;
  padding:0;
  display:grid;
  gap:12px;
}
.process li{
  display:grid;
  grid-template-columns:36px 1fr;
  gap:12px;
  align-items:start;
  padding:14px;
  border-radius:16px;
  border:1px solid var(--line);
  background:#fff;
  box-shadow:var(--shadow-soft);
}
.process strong{
  width:36px;
  height:36px;
  border-radius:12px;
  background:var(--brand-soft);
  color:var(--brand);
  display:grid;
  place-items:center;
  font-family:var(--display);
  font-size:15px;
}
.process span{
  color:var(--text-2);
  line-height:1.75;
  font-size:14px;
}
.price-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:16px;
}
.price-card{
  border-radius:var(--radius-sm);
  border:1px solid var(--line);
  background:#fff;
  padding:22px;
  box-shadow:var(--shadow-soft);
}
.price-card.featured{
  border-color:rgba(255,105,0,.24);
  background:linear-gradient(180deg,#fff9f4 0%, #ffffff 100%);
  box-shadow:0 18px 54px rgba(255,105,0,.12);
}
.price-card .eyebrow{
  color:var(--brand);
  letter-spacing:.12em;
}
.price-value{
  margin-top:12px;
  font-family:var(--display);
  font-size:34px;
  line-height:1.05;
}
.price-value small{
  font-size:14px;
  color:var(--muted);
}
.price-copy{
  margin-top:10px;
  color:var(--muted);
  line-height:1.75;
}
.link-inline{
  color:var(--brand);
}
.link-inline:hover{
  text-decoration:underline;
}

.page-footer{
  margin-top:22px;
  border-top:1px solid var(--line);
  padding-top:18px;
  display:grid;
  grid-template-columns:minmax(240px,.9fr) minmax(520px,1.1fr);
  gap:28px;
  color:var(--muted);
  font-size:13px;
  line-height:1.8;
}
.footer-links{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
}
.footer-links a{
  color:var(--text-2);
}
.footer-links a:hover{
  text-decoration:underline;
}
.footer-col{
  display:flex;
  flex-direction:column;
  gap:8px;
}
.footer-title{
  color:var(--text);
  font-family:var(--display);
  font-size:14px;
  margin-bottom:4px;
}
.footer-copy{
  grid-column:1 / -1;
  color:var(--muted);
  font-size:13px;
}

@media (max-width: 1100px){
  .hero,.page-footer{grid-template-columns:1fr}
}
@media (max-width: 860px){
  .grid-3{grid-template-columns:1fr 1fr}
  .grid-2,.hero,.split-grid,.info-layout,.auth-layout{grid-template-columns:1fr}
  .page-bar{flex-direction:column;align-items:start}
  .side-list{position:static}
  .side-list.plain{
    padding-right:0;
    padding-bottom:12px;
    border-right:0;
    border-bottom:1px solid rgba(16,24,40,.08);
  }
}
@media (max-width: 680px){
  .page-nav{display:none}
  .grid-2,.grid-3,.footer-links,.stat-grid,.price-grid,.solution-grid,.preview-grid{grid-template-columns:1fr}
  .hero-copy,.hero-panel,.section-card{padding:22px}
  .auth-shell{padding:20px 0 32px}
  .auth-top{align-items:flex-start;flex-direction:column}
  .auth-aside,.auth-card,.auth-card.compact{padding:24px}
}