:root{
  --bg:#0b0806;
  --bg-soft:#15100b;
  --ink:#f8f1e9;
  --muted:#a4978b;
  --line:rgba(255,255,255,.09);
  --teal:#ff8c42;
  --violet:#a78bfa;
  --amber:#fbbf24;
  --blue:#60a5fa;
  --pink:#f472b6;
  --radius:18px;
  --max:1180px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--bg);color:var(--ink);
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;
  line-height:1.7;overflow-x:hidden;-webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
em{font-style:normal;color:var(--teal)}
::selection{background:rgba(255,140,66,.25)}

/* ---------- 背景 ---------- */
.aurora{position:fixed;inset:0;z-index:-2;overflow:hidden;pointer-events:none}
.aurora span{position:absolute;border-radius:50%;filter:blur(110px);opacity:.5}
.a1{width:52vw;height:52vw;left:-14vw;top:-18vw;background:radial-gradient(circle,#d4621e,transparent 70%);animation:float1 18s ease-in-out infinite}
.a2{width:46vw;height:46vw;right:-12vw;top:2vw;background:radial-gradient(circle,#b45309,transparent 70%);animation:float2 22s ease-in-out infinite}
.a3{width:40vw;height:40vw;left:22vw;top:52vw;background:radial-gradient(circle,#7c2d12,transparent 70%);animation:float1 26s ease-in-out infinite reverse}
@keyframes float1{0%,100%{transform:translate3d(0,0,0)}50%{transform:translate3d(5vw,4vw,0)}}
@keyframes float2{0%,100%{transform:translate3d(0,0,0)}50%{transform:translate3d(-4vw,6vw,0)}}
.grid-bg{
  position:fixed;inset:0;z-index:-1;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(ellipse 70% 55% at 50% 0%,#000 20%,transparent 75%);
  mask-image:radial-gradient(ellipse 70% 55% at 50% 0%,#000 20%,transparent 75%);
}

/* ---------- 导航 ---------- */
.nav{
  position:sticky;top:0;z-index:50;display:flex;align-items:center;gap:32px;
  padding:16px max(24px,calc((100vw - var(--max))/2));
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;transition:.3s;
}
.nav.scrolled{background:rgba(5,6,10,.78);border-bottom-color:var(--line)}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;letter-spacing:.4px}
.logo-img{width:35px;height:35px;border-radius:50%;
  box-shadow:0 0 22px rgba(249,115,22,.35), 0 0 0 1px rgba(255,140,66,.18);flex-shrink:0}
.logo-img.sm{width:26px;height:26px;border-radius:50%;box-shadow:0 0 0 1px rgba(255,140,66,.15)}
.brand-txt em{font-weight:500}
.links{display:flex;gap:26px;margin-left:auto;font-size:14px;color:var(--muted)}
.links a{transition:.2s}
.links a:hover{color:var(--ink)}
.nav-cta{display:flex;gap:10px;align-items:center;margin-left:8px}

.btn{
  display:inline-flex;align-items:center;gap:8px;justify-content:center;
  padding:12px 22px;border-radius:12px;font-size:14px;font-weight:600;
  background:linear-gradient(120deg,#ff8c42,#ff9d4d);color:#04121a;
  border:1px solid transparent;cursor:pointer;transition:.22s;
  box-shadow:0 8px 26px rgba(255,157,77,.22);
}
.btn:hover{transform:translateY(-2px);box-shadow:0 12px 34px rgba(255,157,77,.32)}
.btn:active{transform:translateY(0)}
.btn.ghost{background:transparent;color:var(--ink);border-color:var(--line);box-shadow:none}
.btn.ghost:hover{border-color:rgba(255,140,66,.5);background:rgba(255,140,66,.06)}
.btn-sm{padding:9px 16px;font-size:13px}
.btn-lg{padding:16px 34px;font-size:16px;border-radius:14px}
.btn.full{width:100%;margin-top:18px}
.arr{transition:.2s}
.btn:hover .arr{transform:translateX(4px)}

/* ---------- 通用 ---------- */
main{position:relative;z-index:1}
section{padding:92px 24px;max-width:var(--max);margin:0 auto}
h2{font-size:clamp(26px,3.4vw,40px);letter-spacing:-.5px;line-height:1.25;font-weight:700}
.sec-head{max-width:620px;margin-bottom:44px}
.sec-head .idx{display:block;font-size:12px;letter-spacing:2px;color:var(--teal);margin-bottom:14px;font-family:ui-monospace,monospace}
.sec-head p{color:var(--muted);margin-top:14px;font-size:15px}
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s cubic-bezier(.2,.7,.3,1),transform .7s cubic-bezier(.2,.7,.3,1)}
.reveal.in{opacity:1;transform:none}

/* ---------- Hero ---------- */
.hero{
  display:grid;grid-template-columns:1.08fr .92fr;gap:56px;align-items:center;
  padding-top:72px;padding-bottom:56px;
}
.badge{
  display:inline-flex;align-items:center;gap:8px;font-size:12.5px;color:#a7f3e4;
  border:1px solid rgba(255,140,66,.24);background:rgba(255,140,66,.07);
  padding:6px 14px;border-radius:99px;margin-bottom:26px;
}
.badge .dot{width:6px;height:6px;border-radius:50%;background:var(--teal);box-shadow:0 0 0 4px rgba(255,140,66,.16);animation:pulse 2.4s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}
.hero h1{font-size:clamp(38px,5.6vw,68px);line-height:1.1;letter-spacing:-2px;font-weight:800}
.grad{
  background:linear-gradient(100deg,#ffb07a 5%,#ff8c42 40%,#f97316 90%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.lead{color:var(--muted);margin:22px 0 32px;font-size:16.5px;max-width:520px}
.hero-btns{display:flex;gap:12px;flex-wrap:wrap}
.kpis{display:flex;gap:34px;margin-top:52px;flex-wrap:wrap}
.kpis div{display:flex;flex-direction:column}
.kpis b{font-size:24px;letter-spacing:-.5px;background:linear-gradient(150deg,#fff,#9fb2c8);-webkit-background-clip:text;background-clip:text;color:transparent}
.kpis span{font-size:12px;color:#6d7789;letter-spacing:.5px}

/* 终端卡 */
.hero-right{position:relative}
.terminal{
  border:1px solid var(--line);border-radius:20px;overflow:hidden;
  background:linear-gradient(165deg,rgba(26,18,12,.94),rgba(12,8,5,.97));
  box-shadow:0 30px 80px -20px rgba(0,0,0,.9),0 0 0 1px rgba(255,255,255,.03) inset;
  backdrop-filter:blur(8px);
}
.t-bar{display:flex;align-items:center;gap:7px;padding:12px 16px;border-bottom:1px solid var(--line);background:rgba(255,255,255,.015)}
.t-bar i{width:9px;height:9px;border-radius:50%;background:#3a2c20}
.t-bar i:nth-child(1){background:#ff5f57}.t-bar i:nth-child(2){background:#febc2e}.t-bar i:nth-child(3){background:#28c840}
.t-bar span{margin-left:8px;font-size:11.5px;color:#7d6f62;font-family:ui-monospace,monospace}
.t-body{padding:20px;display:flex;flex-direction:column;gap:16px;min-height:330px}
.msg{font-size:13.5px;line-height:1.65;border-radius:12px;padding:11px 14px;max-width:92%}
.msg.user{align-self:flex-end;background:rgba(255,140,66,.13);border:1px solid rgba(255,140,66,.22);color:#ffd9b3}
.msg.ai{background:rgba(255,255,255,.04);border:1px solid var(--line);color:#dccabc}
.typing{min-height:22px;white-space:pre-wrap}
.typing::after{content:"▍";color:var(--teal);animation:blink 1s steps(2) infinite}
@keyframes blink{50%{opacity:0}}
.t-table{margin-top:12px;font-size:12px;opacity:0;transform:translateY(8px);transition:.5s}
.t-table.show{opacity:1;transform:none}
.tr{display:grid;grid-template-columns:1.1fr .8fr .8fr;gap:8px;padding:6px 8px;border-radius:6px}
.tr.th{color:#6d7789;font-size:11px;letter-spacing:.5px}
.tr:not(.th){border-top:1px solid rgba(255,255,255,.05);font-family:ui-monospace,monospace;color:#aab4c6}
.warn{color:#fbbf24}
.t-input{display:flex;align-items:center;justify-content:space-between;padding:13px 18px;border-top:1px solid var(--line);color:#4f5869;font-size:13px}
kbd{font-family:ui-monospace,monospace;font-size:10px;border:1px solid var(--line);border-radius:5px;padding:2px 6px;color:#9c8d7f}
.float-card{
  position:absolute;font-size:11.5px;color:#b6c2d4;padding:8px 13px;border-radius:10px;
  background:rgba(14,18,26,.9);border:1px solid var(--line);backdrop-filter:blur(10px);
  box-shadow:0 12px 30px -10px rgba(0,0,0,.8);
}
.fc1{right:-14px;top:44px;animation:floaty 5s ease-in-out infinite}
.fc2{left:-18px;bottom:66px;animation:floaty 6.5s ease-in-out infinite reverse}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-9px)}}

/* ---------- 信任条 ---------- */
.strip{
  display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;
  padding:26px 30px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  color:#9c8d7f;font-size:13px;letter-spacing:1px;
}
.strip div{display:flex;align-items:center;gap:9px}
.strip div::before{content:"";width:5px;height:5px;border-radius:50%;background:rgba(255,140,66,.55)}

/* ---------- 模块 ---------- */
.m-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.m-card{
  position:relative;padding:30px 26px;border-radius:var(--radius);
  border:1px solid var(--line);background:linear-gradient(160deg,rgba(20,24,33,.72),rgba(9,11,17,.86));
  overflow:hidden;transition:.3s;
}
.m-card::before{
  content:"";position:absolute;inset:0;opacity:0;transition:.4s;pointer-events:none;
  background:radial-gradient(420px circle at 12% 0%,var(--acc-soft,rgba(255,140,66,.14)),transparent 62%);
}
.m-card:hover{transform:translateY(-5px);border-color:var(--acc-line,rgba(255,140,66,.35));box-shadow:0 24px 50px -24px rgba(0,0,0,.9)}
.m-card:hover::before{opacity:1}
.m-card[data-accent=teal]{--acc:#ff8c42;--acc-soft:rgba(255,140,66,.13);--acc-line:rgba(255,140,66,.34)}
.m-card[data-accent=violet]{--acc:#fbbf24;--acc-soft:rgba(251,191,36,.12);--acc-line:rgba(251,191,36,.32)}
.m-card[data-accent=amber]{--acc:#f87171;--acc-soft:rgba(248,113,113,.12);--acc-line:rgba(248,113,113,.32)}
.m-card[data-accent=blue]{--acc:#fb923c;--acc-soft:rgba(251,146,60,.13);--acc-line:rgba(251,146,60,.34)}
.m-card[data-accent=pink]{--acc:#fb7185;--acc-soft:rgba(251,113,133,.12);--acc-line:rgba(251,113,133,.32)}
.m-card .num{
  font-family:ui-monospace,monospace;font-size:38px;line-height:1;font-weight:700;
  color:transparent;-webkit-text-stroke:1px var(--acc);opacity:.55;margin-bottom:18px;
}
.m-card h3{font-size:20px;letter-spacing:-.2px;margin-bottom:6px}
.m-sub{font-size:12.5px;color:var(--acc);letter-spacing:.3px;margin-bottom:16px}
.m-card ul{list-style:none;display:flex;flex-direction:column;gap:9px}
.m-card li{font-size:13.5px;color:#98a2b5;padding-left:15px;position:relative;line-height:1.6}
.m-card li::before{content:"";position:absolute;left:0;top:8px;width:5px;height:5px;border-radius:50%;background:var(--acc);opacity:.7}
.m-tag{
  display:inline-block;margin-top:20px;font-size:11px;letter-spacing:.5px;
  color:#9aa5b8;border:1px solid rgba(255,255,255,.09);border-radius:99px;padding:4px 11px;
  background:rgba(255,255,255,.02);
}
.m-card.big{grid-row:span 2}
.m-card.big ul{gap:12px}
.m-card.wide{grid-column:span 2;display:flex;flex-wrap:wrap;align-items:flex-start;gap:0 34px}
.m-card.wide.full{grid-column:1 / -1}
.m-card.wide .m-tag{flex-basis:100%}
.m-card.wide .num{width:100%;margin-bottom:12px}
.m-card.wide > div:nth-child(2){min-width:230px}
.m-cols{display:flex;gap:30px;flex:1;flex-wrap:wrap}
.m-cols ul{flex:1;min-width:190px}

/* ---------- 为什么 ---------- */
.why{max-width:var(--max)}
.w-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.w-item{
  padding:26px 24px;border-radius:14px;border:1px solid var(--line);
  background:rgba(255,255,255,.018);transition:.25s;
}
.w-item:hover{background:rgba(255,255,255,.035);border-color:rgba(255,255,255,.16)}
.w-item b{display:block;font-size:16px;margin-bottom:8px}
.w-item p{font-size:13.5px;color:var(--muted)}

/* ---------- 价格 ---------- */
.p-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;align-items:start}
.p-card{
  position:relative;padding:32px 26px;border-radius:var(--radius);
  border:1px solid var(--line);background:linear-gradient(165deg,rgba(18,22,30,.72),rgba(9,11,17,.9));
  transition:.3s;
}
.p-card:hover{transform:translateY(-4px)}
.p-card.hot{border-color:rgba(255,140,66,.4);background:linear-gradient(165deg,rgba(48,26,12,.55),rgba(16,11,7,.92));box-shadow:0 24px 60px -28px rgba(249,115,22,.5)}
.hot-tag{
  position:absolute;top:-11px;left:26px;font-size:11px;padding:3px 11px;border-radius:99px;
  background:linear-gradient(120deg,#ff8c42,#ff9d4d);color:#04121a;font-weight:700;
}
.p-card h4{font-size:14px;color:var(--muted);font-weight:600;letter-spacing:1px}
.amount{font-size:36px;font-weight:800;letter-spacing:-1px;margin:10px 0 4px}
.amount span{font-size:13px;font-weight:500;color:var(--muted);letter-spacing:0}
.p-desc{font-size:12.5px;color:#6f7a8c;margin-bottom:20px}
.p-card ul{list-style:none;display:flex;flex-direction:column;gap:10px}
.p-card li{font-size:13.5px;color:#98a2b5;display:flex;gap:9px;align-items:flex-start}
.p-card li::before{content:"✓";color:var(--teal);font-size:12px;margin-top:2px}
.p-note{text-align:center;color:#7d6f62;font-size:12.5px;margin-top:26px}

/* ---------- FAQ ---------- */
.faq-list{max-width:820px;display:flex;flex-direction:column;gap:10px}
details{
  border:1px solid var(--line);border-radius:12px;padding:0 20px;
  background:rgba(255,255,255,.018);transition:.25s;
}
details[open]{background:rgba(255,255,255,.035);border-color:rgba(255,255,255,.15)}
summary{
  cursor:pointer;list-style:none;padding:18px 0;font-size:14.5px;font-weight:600;
  display:flex;justify-content:space-between;align-items:center;gap:16px;
}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";color:var(--teal);font-size:18px;font-weight:400;transition:.25s}
details[open] summary::after{transform:rotate(45deg)}
details p{padding:0 0 20px;color:var(--muted);font-size:13.5px;max-width:680px}

/* ---------- CTA ---------- */
.cta{
  text-align:center;border:1px solid rgba(255,140,66,.18);border-radius:26px;
  background:radial-gradient(ellipse at 50% 0%,rgba(249,115,22,.14),transparent 65%),rgba(14,10,7,.6);
  padding:76px 24px;margin-bottom:80px;
}
.cta h2{margin-bottom:12px}
.cta p{color:var(--muted);margin-bottom:30px}

/* ---------- 页脚 ---------- */
footer{
  display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap;
  padding:28px max(24px,calc((100vw - var(--max))/2));
  border-top:1px solid var(--line);color:#9c8d7f;font-size:13px;
}
.f-left,.f-right{display:flex;align-items:center;gap:14px}
.f-right a:hover{color:var(--ink)}

/* ---------- 响应式 ---------- */
@media(max-width:960px){
  .hero{grid-template-columns:1fr;gap:44px;padding-top:48px}
  .hero-right{max-width:560px}
  .fc1,.fc2{display:none}
  .m-grid{grid-template-columns:repeat(2,1fr)}
  .m-card.big{grid-row:auto}
  .m-card.wide{grid-column:span 2}
  .p-grid{grid-template-columns:1fr;max-width:460px}
  .p-card.hot{order:-1}
  .pc{display:none}
}
@media(max-width:680px){
  .links{display:none}
  .nav{gap:12px;padding:12px 18px}
  .nav-cta .ghost{display:none}
  section{padding:64px 18px}
  .m-grid,.w-grid{grid-template-columns:1fr}
  .m-card.wide{grid-column:auto}
  .kpis{gap:22px}
  .strip{font-size:11.5px;padding:20px;gap:12px}
  .float-card{display:none}
}

/* ---------- 步骤 ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.step{
  position:relative;padding:28px 24px;border-radius:var(--radius);
  border:1px solid var(--line);background:linear-gradient(162deg,rgba(18,22,30,.7),rgba(9,11,17,.88));
  transition:.3s;
}
.step:hover{transform:translateY(-4px);border-color:rgba(255,140,66,.32)}
.sn{
  font-family:ui-monospace,monospace;font-size:12px;color:var(--teal);
  border:1px solid rgba(255,140,66,.28);border-radius:99px;padding:3px 10px;
  background:rgba(255,140,66,.08);letter-spacing:1px;
}
.step h4{font-size:16px;margin:16px 0 8px}
.step p{font-size:13.5px;color:var(--muted);line-height:1.75}
@media(max-width:900px){.steps{grid-template-columns:1fr}}

/* ---------- 业务线 ---------- */
.biz-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.biz-card{
  border:1px solid var(--line);border-radius:var(--radius);padding:26px 26px 22px;
  background:linear-gradient(162deg,rgba(26,18,12,.72),rgba(12,8,5,.9));transition:.3s;
}
.biz-card:hover{border-color:rgba(255,140,66,.3);transform:translateY(-3px)}
.biz-head{display:flex;align-items:center;gap:11px;margin-bottom:16px}
.biz-head h3{font-size:16.5px;font-weight:700;letter-spacing:-.2px}
.biz-tag{
  font-size:11px;padding:3px 11px;border-radius:99px;white-space:nowrap;
  background:rgba(255,140,66,.12);color:#ffb07a;border:1px solid rgba(255,140,66,.3);
}
.biz-tag.alt{background:rgba(251,191,36,.1);color:#fcd34d;border-color:rgba(251,191,36,.26)}
.biz-card ul{list-style:none;display:flex;flex-direction:column;gap:11px}
.biz-card li{font-size:13.5px;color:var(--muted);line-height:1.7;padding-left:16px;position:relative}
.biz-card li::before{content:"";position:absolute;left:0;top:9px;width:5px;height:5px;border-radius:50%;background:rgba(255,140,66,.55)}
.biz-card li b{color:#f0e2d5;font-weight:600}
@media(max-width:860px){.biz-grid{grid-template-columns:1fr}}