*{margin:0;padding:0;box-sizing:border-box}
:root{
  --ink:#1c2430;--ink-soft:#47566a;--line:#e2e8f0;
  --paper:#fdfbf7;--paper-2:#f4f7fb;
  --brand:#3b4fe4;--brand-deep:#2431a8;--mint:#16b8a0;--coral:#ff7a59;--amber:#f7b731;
  --shadow-sm:0 4px 14px rgba(28,36,48,.06);
  --shadow-md:0 14px 38px rgba(28,36,48,.1);
  --radius:18px;
}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  color:var(--ink);background:var(--paper);line-height:1.65;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{text-decoration:none;color:inherit}
ul{list-style:none}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 22px}
section{position:relative}

/* ======= 顶部导航 ======= */
.site-header{
  position:sticky;top:0;z-index:900;
  background:rgba(253,251,247,.9);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:70px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand img{width:42px;height:42px;object-fit:contain;border-radius:10px;background:#fff;padding:4px;box-shadow:var(--shadow-sm)}
.brand-txt strong{display:block;font-size:17px;letter-spacing:.5px;color:var(--ink)}
.brand-txt span{display:block;font-size:11px;color:var(--ink-soft);letter-spacing:1.5px}
.nav-links{display:flex;align-items:center;gap:0;flex-wrap:wrap}
.nav-links a{
  display:block;padding:8px 11px;font-size:13.5px;color:var(--ink-soft);
  border-radius:8px;transition:color .22s,background .22s;white-space:nowrap;
}
.nav-links a:hover{color:var(--brand);background:rgba(59,79,228,.08)}
.nav-cta{
  display:inline-flex;align-items:center;gap:6px;
  padding:10px 20px;border-radius:999px;font-size:13.5px;font-weight:600;
  color:#fff;background:linear-gradient(135deg,var(--brand),var(--mint));
  box-shadow:0 8px 20px rgba(59,79,228,.28);transition:transform .22s,box-shadow .22s;
  white-space:nowrap;flex-shrink:0;
}
.nav-cta:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(59,79,228,.36)}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);
  background:#fff;cursor:pointer;position:relative;flex-shrink:0;
}
.nav-toggle i{
  position:absolute;left:11px;width:20px;height:2px;background:var(--ink);
  border-radius:2px;transition:.28s;
}
.nav-toggle i:nth-child(1){top:14px}
.nav-toggle i:nth-child(2){top:20px}
.nav-toggle i:nth-child(3){top:26px}
.nav-toggle.open i:nth-child(1){top:20px;transform:rotate(45deg)}
.nav-toggle.open i:nth-child(2){opacity:0}
.nav-toggle.open i:nth-child(3){top:20px;transform:rotate(-45deg)}

@media(max-width:1023px){
  .nav-toggle{display:block}
  .nav-links{
    position:absolute;top:100%;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:0;
    background:#fff;border-bottom:1px solid var(--line);
    padding:8px 16px 16px;max-height:0;overflow:hidden;
    transition:max-height .34s ease,padding .34s;box-shadow:var(--shadow-md);
  }
  .nav-links.open{max-height:640px;padding:8px 16px 16px}
  .nav-links a{padding:11px 12px;font-size:14px;border-bottom:1px solid #f1f4f9}
  .nav-cta{display:none}
}

/* ======= Hero ======= */
.hero{
  overflow:hidden;
  background:
    radial-gradient(circle at 12% 18%,rgba(59,79,228,.16),transparent 46%),
    radial-gradient(circle at 88% 8%,rgba(22,184,160,.16),transparent 44%),
    radial-gradient(circle at 74% 92%,rgba(255,122,89,.14),transparent 48%),
    linear-gradient(165deg,#fdfbf7 0%,#f2f6fd 58%,#fbf6ef 100%);
  padding:64px 0 76px;border-bottom:1px solid var(--line);
}
.hero-inner{display:grid;grid-template-columns:1.12fr .88fr;gap:46px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 15px;border-radius:999px;font-size:12.5px;font-weight:600;
  color:var(--brand-deep);background:rgba(59,79,228,.1);
  border:1px solid rgba(59,79,228,.18);margin-bottom:20px;
}
.eyebrow em{width:7px;height:7px;border-radius:50%;background:var(--mint);animation:pulse 2s infinite}
@keyframes pulse{0%,100%{transform:scale(1);opacity:1}50%{transform:scale(1.5);opacity:.5}}
.hero h1{
  font-size:clamp(28px,4vw,46px);line-height:1.24;font-weight:800;
  letter-spacing:-.5px;color:var(--ink);margin-bottom:20px;
}
.hero h1 b{
  position:relative;color:var(--brand-deep);
  background:linear-gradient(120deg,var(--brand),var(--mint) 92%);
  -webkit-background-clip:text;background-clip:text;
}
.hero h1 b::after{
  content:"";position:absolute;left:0;right:0;bottom:2px;height:8px;
  background:rgba(247,183,49,.4);border-radius:4px;z-index:-1;
}
.hero p.lead{font-size:15.5px;color:var(--ink-soft);max-width:540px;margin-bottom:14px}
.hero-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:28px}
.hero-tags span{
  padding:5px 13px;font-size:12px;border-radius:999px;
  background:#fff;border:1px solid var(--line);color:var(--ink-soft);
  box-shadow:var(--shadow-sm);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px}
.btn-primary,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 30px;border-radius:999px;font-size:15px;font-weight:600;
  cursor:pointer;border:none;transition:transform .22s,box-shadow .22s,background .22s;
}
.btn-primary{
  color:#fff;background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  box-shadow:0 12px 26px rgba(59,79,228,.3);
}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 18px 34px rgba(59,79,228,.4)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{
  color:var(--ink);background:#fff;border:1.5px solid var(--line);
  box-shadow:var(--shadow-sm);
}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-3px)}
.hero-metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;max-width:520px}
.metric{
  padding:14px 16px;border-radius:14px;background:rgba(255,255,255,.78);
  border:1px solid var(--line);backdrop-filter:blur(6px);
  transition:transform .25s,box-shadow .25s;
}
.metric:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.metric b{display:block;font-size:20px;color:var(--brand-deep);font-weight:800;line-height:1.3}
.metric span{font-size:12px;color:var(--ink-soft)}

/* hero visual (纯CSS几何) */
.hero-visual{position:relative;min-height:340px;display:flex;align-items:center;justify-content:center}
.orb{
  position:absolute;border-radius:50%;filter:blur(2px);opacity:.85;
  animation:float 7s ease-in-out infinite;
}
.orb-a{width:150px;height:150px;top:8%;left:6%;background:linear-gradient(140deg,#3b4fe4,#7b8bff);opacity:.28}
.orb-b{width:110px;height:110px;bottom:12%;right:8%;background:linear-gradient(140deg,#16b8a0,#5be0cb);opacity:.3;animation-delay:1.4s}
.orb-c{width:74px;height:74px;top:56%;left:2%;background:linear-gradient(140deg,#ff7a59,#ffb39e);opacity:.34;animation-delay:2.2s}
@keyframes float{0%,100%{transform:translateY(0) translateX(0)}50%{transform:translateY(-16px) translateX(8px)}}
.grid-panel{
  position:relative;width:100%;max-width:380px;padding:26px;border-radius:24px;
  background:rgba(255,255,255,.9);border:1px solid rgba(59,79,228,.16);
  box-shadow:0 26px 60px rgba(28,36,48,.14);backdrop-filter:blur(8px);
  animation:rise .8s ease both;
}
@keyframes rise{from{opacity:0;transform:translateY(26px)}to{opacity:1;transform:translateY(0)}}
.grid-panel h2{font-size:14px;font-weight:700;color:var(--ink-soft);letter-spacing:.6px;margin-bottom:16px}
.model-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:9px}
.model-chip{
  padding:9px 4px;border-radius:10px;text-align:center;font-size:12px;font-weight:600;
  color:var(--brand-deep);background:rgba(59,79,228,.07);border:1px solid rgba(59,79,228,.13);
  transition:transform .22s,background .22s,color .22s;
}
.model-chip:hover{transform:translateY(-3px);background:var(--brand);color:#fff;border-color:var(--brand)}
.panel-foot{
  margin-top:18px;padding-top:16px;border-top:1px dashed var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:10px;
}
.panel-foot span{font-size:12px;color:var(--ink-soft)}
.panel-foot b{font-size:13px;color:var(--mint);font-weight:700}

@media(max-width:900px){
  .hero-inner{grid-template-columns:1fr;gap:36px}
  .hero{padding:48px 0 60px}
  .hero-visual{min-height:auto;order:2}
  .grid-panel{max-width:100%}
}
@media(max-width:520px){
  .hero-metrics{grid-template-columns:1fr 1fr}
  .metric:nth-child(3){grid-column:span 2}
  .hero-actions{flex-direction:column}
  .btn-primary,.btn-ghost{width:100%}
}

/* ======= 通用区块 ======= */
.section{padding:72px 0}
.section.alt{background:linear-gradient(180deg,#f7f9fd 0%,#f4f6fb 100%);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{max-width:720px;margin:0 auto 42px;text-align:center}
.sec-head.left{margin-left:0;text-align:left}
.sec-eyebrow{
  display:inline-block;font-size:12.5px;font-weight:700;letter-spacing:2px;
  color:var(--mint);text-transform:uppercase;margin-bottom:12px;
}
.sec-head h2{font-size:clamp(22px,2.9vw,32px);font-weight:800;color:var(--ink);line-height:1.32;margin-bottom:14px;letter-spacing:-.3px}
.sec-head p{font-size:15px;color:var(--ink-soft)}

/* ======= 关于我们 ======= */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:42px;align-items:center}
.about-media{display:grid;grid-template-columns:1.3fr 1fr;gap:14px}
.about-media figure{
  border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--shadow-md);background:#fff;
}
.about-media figure img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease}
.about-media figure:hover img{transform:scale(1.05)}
.about-media .tall{min-height:220px}
.about-text h2{font-size:clamp(22px,2.8vw,30px);font-weight:800;line-height:1.34;margin-bottom:16px}
.about-text p{font-size:15px;color:var(--ink-soft);margin-bottom:14px}
.about-list{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:22px}
.about-list li{
  display:flex;align-items:flex-start;gap:9px;font-size:14px;color:var(--ink);
  padding:11px 13px;border-radius:12px;background:#fff;border:1px solid var(--line);
  transition:transform .22s,box-shadow .22s;
}
.about-list li:hover{transform:translateY(-3px);box-shadow:var(--shadow-sm)}
.about-list li::before{
  content:"";flex-shrink:0;width:16px;height:16px;margin-top:3px;border-radius:50%;
  background:radial-gradient(circle,#16b8a0 38%,rgba(22,184,160,.22) 42%);
}
@media(max-width:900px){
  .about-grid{grid-template-columns:1fr;gap:30px}
  .about-media .tall{min-height:170px}
}
@media(max-width:520px){
  .about-list{grid-template-columns:1fr}
  .about-media{grid-template-columns:1fr 1fr}
}

/* ======= 数据指标 ======= */
.stats-bar{
  display:grid;grid-template-columns:repeat(4,1fr);gap:16px;
  padding:32px;border-radius:22px;
  background:linear-gradient(120deg,#1c2430,#2431a8 70%,#3b4fe4);
  box-shadow:0 22px 50px rgba(28,36,48,.24);
}
.stat{text-align:center;padding:8px;border-right:1px solid rgba(255,255,255,.14)}
.stat:last-child{border-right:none}
.stat b{display:block;font-size:clamp(22px,3vw,32px);font-weight:800;color:#fff;line-height:1.2}
.stat span{display:block;font-size:13px;color:rgba(255,255,255,.8);margin-top:6px}
@media(max-width:760px){
  .stats-bar{grid-template-columns:1fr 1fr;padding:24px 18px;gap:10px}
  .stat:nth-child(2){border-right:none}
}

/* ======= 服务能力卡片 ======= */
.svc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.svc-card{
  position:relative;padding:26px 22px;border-radius:var(--radius);
  background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-sm);
  transition:transform .28s,box-shadow .28s,border-color .28s;overflow:hidden;
}
.svc-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:4px;
  background:linear-gradient(90deg,var(--brand),var(--mint));
  transform:scaleX(0);transform-origin:left;transition:transform .34s;
}
.svc-card:hover{transform:translateY(-7px);box-shadow:var(--shadow-md);border-color:rgba(59,79,228,.32)}
.svc-card:hover::before{transform:scaleX(1)}
.svc-icon{
  width:46px;height:46px;border-radius:13px;display:flex;align-items:center;justify-content:center;
  font-size:20px;font-weight:800;color:#fff;margin-bottom:16px;
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
}
.svc-card:nth-child(3n+2) .svc-icon{background:linear-gradient(135deg,var(--mint),#0e9184)}
.svc-card:nth-child(3n) .svc-icon{background:linear-gradient(135deg,var(--coral),#e85c3a)}
.svc-card h3{font-size:17px;font-weight:700;margin-bottom:9px;color:var(--ink)}
.svc-card p{font-size:13.8px;color:var(--ink-soft);line-height:1.68}
.svc-card ul{margin-top:12px;display:flex;flex-wrap:wrap;gap:6px}
.svc-card ul li{
  font-size:11.5px;padding:3px 10px;border-radius:999px;
  background:var(--paper-2);color:var(--ink-soft);border:1px solid var(--line);
}
@media(max-width:900px){.svc-grid{grid-template-columns:1fr 1fr}}
@media(max-width:600px){.svc-grid{grid-template-columns:1fr}}

/* ======= 一站式制作 / 流程步骤 ======= */
.flow{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.flow::before{
  content:"";position:absolute;top:34px;left:8%;right:8%;height:2px;
  background:linear-gradient(90deg,rgba(59,79,228,.35),rgba(22,184,160,.35),rgba(255,122,89,.35));
  z-index:0;
}
.flow-step{position:relative;z-index:1;text-align:center;padding:0 6px}
.flow-num{
  width:68px;height:68px;margin:0 auto 18px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-size:20px;font-weight:800;color:#fff;
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  box-shadow:0 12px 26px rgba(59,79,228,.3);
  transition:transform .3s;
}
.flow-step:hover .flow-num{transform:translateY(-6px) scale(1.06)}
.flow-step:nth-child(2) .flow-num{background:linear-gradient(135deg,#4a5ff0,#2431a8)}
.flow-step:nth-child(3) .flow-num{background:linear-gradient(135deg,var(--mint),#0e9184);box-shadow:0 12px 26px rgba(22,184,160,.3)}
.flow-step:nth-child(4) .flow-num{background:linear-gradient(135deg,var(--coral),#e85c3a);box-shadow:0 12px 26px rgba(255,122,89,.3)}
.flow-step h3{font-size:16px;font-weight:700;margin-bottom:8px}
.flow-step p{font-size:13.5px;color:var(--ink-soft)}
@media(max-width:860px){
  .flow{grid-template-columns:1fr 1fr;gap:30px 18px}
  .flow::before{display:none}
}

/* ======= 场景标签云 ======= */
.scene-cloud{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}
.scene-cloud a{
  display:inline-flex;align-items:center;gap:6px;
  padding:9px 18px;border-radius:999px;font-size:13.5px;
  background:#fff;border:1px solid var(--line);color:var(--ink-soft);
  box-shadow:var(--shadow-sm);transition:.24s;
}
.scene-cloud a:hover{
  transform:translateY(-3px);color:#fff;border-color:transparent;
  background:linear-gradient(135deg,var(--brand),var(--mint));
  box-shadow:0 12px 24px rgba(59,79,228,.26);
}

/* ======= 对比评测 ======= */
.score-panel{
  display:grid;grid-template-columns:.8fr 1.2fr;gap:26px;margin-bottom:26px;
}
.score-card{
  padding:30px;border-radius:22px;text-align:center;color:#fff;
  background:linear-gradient(140deg,#2431a8,#3b4fe4 62%,#16b8a0);
  box-shadow:0 22px 48px rgba(59,79,228,.28);
  display:flex;flex-direction:column;justify-content:center;gap:8px;
}
.score-card .stars{font-size:22px;letter-spacing:4px;color:var(--amber)}
.score-card b{font-size:46px;font-weight:800;line-height:1.1}
.score-card b small{font-size:16px;font-weight:500;opacity:.8;margin-left:4px}
.score-card span{font-size:13.5px;opacity:.88}
.score-desc{
  padding:28px;border-radius:22px;background:#fff;border:1px solid var(--line);
  box-shadow:var(--shadow-sm);display:flex;flex-direction:column;justify-content:center;
}
.score-desc h3{font-size:19px;font-weight:800;margin-bottom:12px}
.score-desc p{font-size:14.5px;color:var(--ink-soft);margin-bottom:10px}
.score-desc .hl{color:var(--brand-deep);font-weight:700}
.table-wrap{overflow-x:auto;border-radius:var(--radius);border:1px solid var(--line);background:#fff;box-shadow:var(--shadow-sm)}
table{width:100%;border-collapse:collapse;min-width:640px}
thead th{
  padding:16px 18px;font-size:13.5px;font-weight:700;text-align:left;
  background:linear-gradient(120deg,#f2f6fd,#eef6f4);color:var(--ink);
  border-bottom:1px solid var(--line);white-space:nowrap;
}
tbody td{
  padding:15px 18px;font-size:13.8px;color:var(--ink-soft);
  border-bottom:1px solid #f0f3f8;vertical-align:middle;
}
tbody tr:last-child td{border-bottom:none}
tbody tr{transition:background .2s}
tbody tr:hover{background:#f8fafd}
td.brand-col{color:var(--brand-deep);font-weight:700;background:rgba(59,79,228,.045)}
.yes{color:var(--mint);font-weight:700}
@media(max-width:860px){.score-panel{grid-template-columns:1fr}}

/* ======= 案例中心 ======= */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.case-card{
  border-radius:var(--radius);overflow:hidden;background:#fff;
  border:1px solid var(--line);box-shadow:var(--shadow-sm);
  display:flex;flex-direction:column;transition:transform .3s,box-shadow .3s;
}
.case-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-md)}
.case-thumb{aspect-ratio:16/10;overflow:hidden;background:var(--paper-2)}
.case-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .6s}
.case-card:hover .case-thumb img{transform:scale(1.06)}
.case-body{padding:20px 20px 22px;display:flex;flex-direction:column;gap:9px;flex:1}
.case-body span.tag{
  align-self:flex-start;font-size:11.5px;font-weight:600;padding:3px 11px;
  border-radius:999px;color:var(--brand-deep);background:rgba(59,79,228,.09);
}
.case-body h3{font-size:16px;font-weight:700;color:var(--ink);line-height:1.45}
.case-body p{font-size:13.4px;color:var(--ink-soft);flex:1}
.case-body .case-meta{font-size:12px;color:var(--mint);font-weight:600}
@media(max-width:900px){.case-grid{grid-template-columns:1fr 1fr}}
@media(max-width:600px){.case-grid{grid-template-columns:1fr}}

/* ======= 用户评论 ======= */
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.review-card{
  padding:24px 22px;border-radius:var(--radius);background:#fff;
  border:1px solid var(--line);box-shadow:var(--shadow-sm);
  display:flex;flex-direction:column;gap:14px;
  transition:transform .26s,box-shadow .26s;
}
.review-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md)}
.review-top{display:flex;align-items:center;gap:12px}
.avatar{
  width:44px;height:44px;border-radius:50%;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:700;color:#fff;
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
}
.review-card:nth-child(2) .avatar{background:linear-gradient(135deg,var(--mint),#0e9184)}
.review-card:nth-child(3) .avatar{background:linear-gradient(135deg,var(--coral),#e85c3a)}
.review-card:nth-child(4) .avatar{background:linear-gradient(135deg,#f7b731,#e29a11)}
.review-card:nth-child(5) .avatar{background:linear-gradient(135deg,#7b8bff,#3b4fe4)}
.review-card:nth-child(6) .avatar{background:linear-gradient(135deg,#16b8a0,#3b4fe4)}
.review-top strong{display:block;font-size:14.5px;color:var(--ink)}
.review-top em{display:block;font-size:12px;color:var(--ink-soft);font-style:normal}
.review-card p{font-size:13.8px;color:var(--ink-soft);line-height:1.72;flex:1}
.review-stars{color:var(--amber);font-size:13px;letter-spacing:2px}
@media(max-width:900px){.review-grid{grid-template-columns:1fr 1fr}}
@media(max-width:600px){.review-grid{grid-template-columns:1fr}}

/* ======= Token 比价 ======= */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.price-card{
  padding:26px 24px;border-radius:var(--radius);background:#fff;
  border:1px solid var(--line);box-shadow:var(--shadow-sm);
  transition:transform .26s,box-shadow .26s,border-color .26s;
}
.price-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md);border-color:rgba(59,79,228,.3)}
.price-card h3{font-size:16px;font-weight:700;margin-bottom:14px;color:var(--ink)}
.price-row{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:9px 0;font-size:13.5px;color:var(--ink-soft);border-bottom:1px dashed #eef1f7;
}
.price-row:last-child{border-bottom:none}
.price-row b{color:var(--brand-deep);font-weight:700}
.price-row .save{color:var(--mint);font-size:12px;font-weight:700}
.price-note{font-size:12px;color:var(--ink-soft);margin-top:14px;padding-top:12px;border-top:1px solid var(--line)}
@media(max-width:900px){.price-grid{grid-template-columns:1fr}}

/* ======= 服务网络 / 时间线 ======= */
.timeline{position:relative;max-width:760px;margin:0 auto;padding-left:28px}
.timeline::before{
  content:"";position:absolute;left:7px;top:6px;bottom:6px;width:2px;
  background:linear-gradient(180deg,var(--brand),var(--mint),var(--coral));
}
.tl-item{position:relative;padding-bottom:26px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{
  content:"";position:absolute;left:-27px;top:6px;width:16px;height:16px;border-radius:50%;
  background:#fff;border:3px solid var(--brand);box-shadow:0 0 0 4px rgba(59,79,228,.1);
}
.tl-item:nth-child(3)::before{border-color:var(--mint);box-shadow:0 0 0 4px rgba(22,184,160,.12)}
.tl-item:nth-child(4)::before{border-color:var(--coral);box-shadow:0 0 0 4px rgba(255,122,89,.12)}
.tl-item h3{font-size:16px;font-weight:700;margin-bottom:6px}
.tl-item p{font-size:13.8px;color:var(--ink-soft)}

/* ======= 表单 ======= */
.form-shell{
  display:grid;grid-template-columns:.9fr 1.1fr;gap:34px;
  padding:38px;border-radius:24px;background:#fff;border:1px solid var(--line);
  box-shadow:var(--shadow-md);
}
.form-intro h2{font-size:clamp(21px,2.6vw,28px);font-weight:800;line-height:1.34;margin-bottom:14px}
.form-intro p{font-size:14.5px;color:var(--ink-soft);margin-bottom:20px}
.contact-list{display:flex;flex-direction:column;gap:12px}
.contact-list li{
  display:flex;align-items:flex-start;gap:11px;font-size:13.8px;color:var(--ink-soft);
  padding:11px 14px;border-radius:12px;background:var(--paper-2);
}
.contact-list li b{color:var(--ink);font-weight:600;flex-shrink:0}
.contact-list li a{color:var(--brand-deep)}
.contact-list li a:hover{text-decoration:underline}
.qr-box{margin-top:20px;display:flex;align-items:center;gap:14px;padding:14px;border-radius:14px;background:var(--paper-2);border:1px solid var(--line)}
.qr-box img{width:92px;height:92px;object-fit:contain;border-radius:10px;background:#fff;padding:5px;flex-shrink:0}
.qr-box span{font-size:13px;color:var(--ink-soft)}
.qr-box strong{display:block;font-size:14px;color:var(--ink);margin-bottom:4px}
form{display:flex;flex-direction:column;gap:14px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.field{display:flex;flex-direction:column;gap:6px}
.field label{font-size:13px;font-weight:600;color:var(--ink)}
.field input,.field select,.field textarea{
  width:100%;padding:12px 15px;font-size:14px;font-family:inherit;
  color:var(--ink);background:var(--paper-2);
  border:1.5px solid transparent;border-radius:11px;outline:none;
  transition:border-color .22s,background .22s,box-shadow .22s;
}
.field textarea{resize:vertical;min-height:104px}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--brand);background:#fff;
  box-shadow:0 0 0 4px rgba(59,79,228,.1);
}
.field input::placeholder,.field textarea::placeholder{color:#9aa7b8}
.submit-btn{
  padding:14px 26px;border-radius:11px;border:none;cursor:pointer;
  font-size:15px;font-weight:700;color:#fff;font-family:inherit;
  background:linear-gradient(135deg,var(--brand),var(--brand-deep));
  box-shadow:0 12px 26px rgba(59,79,228,.28);
  transition:transform .22s,box-shadow .22s;
}
.submit-btn:hover{transform:translateY(-3px);box-shadow:0 18px 34px rgba(59,79,228,.38)}
.submit-btn:active{transform:translateY(0)}
.form-tip{font-size:12px;color:var(--ink-soft);text-align:center}
@media(max-width:900px){
  .form-shell{grid-template-columns:1fr;padding:26px}
  .form-row{grid-template-columns:1fr}
}

/* ======= FAQ ======= */
.faq-list{max-width:860px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.faq-item{
  border-radius:14px;background:#fff;border:1px solid var(--line);
  overflow:hidden;transition:box-shadow .24s,border-color .24s;
}
.faq-item:hover{border-color:rgba(59,79,228,.28);box-shadow:var(--shadow-sm)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:17px 22px;text-align:left;background:none;border:none;cursor:pointer;
  font-size:14.8px;font-weight:600;color:var(--ink);font-family:inherit;line-height:1.5;
  transition:color .2s;
}
.faq-q:hover{color:var(--brand-deep)}
.faq-q i{
  flex-shrink:0;width:24px;height:24px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-size:16px;font-style:normal;color:var(--brand);
  background:rgba(59,79,228,.1);transition:transform .3s,background .3s,color .3s;
}
.faq-item.active .faq-q i{transform:rotate(45deg);background:var(--brand);color:#fff}
.faq-a{max-height:0;overflow:hidden;transition:max-height .36s ease}
.faq-a p{padding:0 22px 18px;font-size:13.9px;color:var(--ink-soft);line-height:1.75}

/* ======= AI百科 / 行业资讯 ======= */
.article-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.article-card{
  padding:22px;border-radius:var(--radius);background:#fff;border:1px solid var(--line);
  box-shadow:var(--shadow-sm);display:flex;flex-direction:column;gap:11px;
  transition:transform .26s,box-shadow .26s;
}
.article-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md)}
.article-card span.tag{
  align-self:flex-start;font-size:11.5px;font-weight:600;padding:3px 11px;
  border-radius:999px;color:var(--mint);background:rgba(22,184,160,.1);
}
.article-card h3{font-size:15.5px;font-weight:700;line-height:1.5;color:var(--ink)}
.article-card p{font-size:13.3px;color:var(--ink-soft);flex:1}
.article-card a.more{font-size:13px;font-weight:600;color:var(--brand-deep);transition:letter-spacing .2s}
.article-card a.more:hover{letter-spacing:.6px}
@media(max-width:900px){.article-grid{grid-template-columns:1fr 1fr}}
@media(max-width:600px){.article-grid{grid-template-columns:1fr}}

/* ======= 加盟代理 CTA ======= */
.join-cta{
  padding:52px 40px;border-radius:26px;text-align:center;position:relative;overflow:hidden;
  background:
    radial-gradient(circle at 14% 20%,rgba(255,255,255,.16),transparent 46%),
    radial-gradient(circle at 86% 84%,rgba(247,183,49,.24),transparent 46%),
    linear-gradient(135deg,#2431a8,#3b4fe4 56%,#16b8a0);
  color:#fff;box-shadow:0 26px 56px rgba(36,49,168,.3);
}
.join-cta h2{font-size:clamp(22px,3vw,32px);font-weight:800;margin-bottom:14px;line-height:1.34}
.join-cta p{font-size:15px;color:rgba(255,255,255,.9);max-width:640px;margin:0 auto 26px}
.join-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center}
.btn-light,.btn-outline-light{
  display:inline-flex;align-items:center;justify-content:center;
  padding:13px 30px;border-radius:999px;font-size:14.5px;font-weight:700;
  transition:transform .22s,box-shadow .22s,background .22s;
}
.btn-light{color:var(--brand-deep);background:#fff;box-shadow:0 12px 26px rgba(0,0,0,.18)}
.btn-light:hover{transform:translateY(-3px);box-shadow:0 18px 34px rgba(0,0,0,.24)}
.btn-outline-light{color:#fff;border:1.5px solid rgba(255,255,255,.6);background:rgba(255,255,255,.08)}
.btn-outline-light:hover{background:rgba(255,255,255,.18);transform:translateY(-3px)}
@media(max-width:520px){
  .join-cta{padding:38px 22px}
  .join-actions{flex-direction:column}
  .btn-light,.btn-outline-light{width:100%}
}

/* ======= 友情链接 & footer ======= */
.friend-links{
  padding:30px 0;border-top:1px solid var(--line);
  background:#f7f9fd;
}
.fl-inner{display:flex;flex-wrap:wrap;align-items:center;gap:10px}
.fl-inner strong{font-size:13px;color:var(--ink-soft);margin-right:4px}
.fl-inner a{
  font-size:13px;padding:5px 13px;border-radius:8px;color:var(--ink-soft);
  background:#fff;border:1px solid var(--line);transition:.22s;
}
.fl-inner a:hover{color:var(--brand-deep);border-color:rgba(59,79,228,.4);transform:translateY(-2px)}

.site-footer{
  background:#1c2430;color:#c3ccd8;padding:50px 0 0;
}
.footer-top{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:34px;padding-bottom:38px}
.footer-brand img{width:44px;height:44px;object-fit:contain;border-radius:10px;background:#fff;padding:4px;margin-bottom:14px}
.footer-brand strong{display:block;font-size:17px;color:#fff;margin-bottom:10px}
.footer-brand p{font-size:13px;color:#8f9db0;line-height:1.75;max-width:300px}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:15px}
.footer-col ul{display:flex;flex-direction:column;gap:9px}
.footer-col ul li a{font-size:13px;color:#9aa8ba;transition:color .2s,padding-left .2s}
.footer-col ul li a:hover{color:#fff;padding-left:4px}
.footer-col p{font-size:13px;color:#9aa8ba;line-height:1.9}
.footer-col p a{color:#9aa8ba}
.footer-col p a:hover{color:#fff}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);padding:20px 0;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;
}
.footer-bottom p{font-size:12.5px;color:#8b98ab}
.footer-bottom p a{color:#a9b6c7}
.footer-bottom p a:hover{color:#fff}
@media(max-width:900px){
  .footer-top{grid-template-columns:1fr 1fr;gap:26px}
  .footer-brand{grid-column:1/-1}
}
@media(max-width:520px){
  .footer-top{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}

/* ======= 浮动组件 ======= */
.float-kf{
  position:fixed;right:20px;bottom:88px;z-index:880;
  width:56px;height:56px;border-radius:50%;border:none;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  font-size:22px;color:#fff;font-family:inherit;
  background:linear-gradient(135deg,var(--brand),var(--mint));
  box-shadow:0 14px 30px rgba(59,79,228,.38);
  transition:transform .24s,box-shadow .24s;
}
.float-kf:hover{transform:translateY(-4px) scale(1.06);box-shadow:0 18px 38px rgba(59,79,228,.46)}
.kf-panel{
  position:fixed;right:20px;bottom:156px;z-index:885;width:250px;
  background:#fff;border-radius:18px;border:1px solid var(--line);
  box-shadow:0 22px 54px rgba(28,36,48,.22);padding:18px;text-align:center;
  opacity:0;visibility:hidden;transform:translateY(14px);
  transition:opacity .28s,transform .28s,visibility .28s;
}
.kf-panel.show{opacity:1;visibility:visible;transform:translateY(0)}
.kf-panel strong{display:block;font-size:14px;color:var(--ink);margin-bottom:4px}
.kf-panel span{display:block;font-size:12px;color:var(--ink-soft);margin-bottom:12px}
.kf-panel img{width:150px;height:150px;object-fit:contain;margin:0 auto 10px;border-radius:10px;background:var(--paper-2);padding:6px}
.kf-panel p{font-size:12px;color:var(--ink-soft);line-height:1.75}

.back-top{
  position:fixed;right:20px;bottom:22px;z-index:880;
  width:46px;height:46px;border-radius:50%;border:1px solid var(--line);
  background:#fff;color:var(--brand-deep);cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  font-size:17px;font-family:inherit;box-shadow:var(--shadow-md);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .28s,transform .28s,visibility .28s,background .22s;
}
.back-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.back-top:hover{background:var(--brand);color:#fff;border-color:var(--brand)}

/* ======= 滚动渐入 ======= */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .72s ease,transform .72s ease}
.reveal.in{opacity:1;transform:translateY(0)}
@media(prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  .orb{animation:none}
  *{scroll-behavior:auto}
}