:root{
  --bg:#04050a;--panel:rgba(255,255,255,.028);--line:rgba(255,255,255,.09);
  --txt:#e9ecf5;--dim:#a3abbe;--faint:#7d8499;
  --cy:#6ee7ff;--bl:#8ea2ff;
  --serif:'Songti SC','STSong','Noto Serif CJK SC','Noto Serif SC','SimSun',serif;--sans:'PingFang SC','Hiragino Sans GB','Microsoft YaHei','Noto Sans CJK SC',sans-serif;--mono:ui-monospace,'SF Mono','Cascadia Code','JetBrains Mono',Consolas,monospace;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
html,body{background:var(--bg);color:var(--txt);font-family:var(--sans);overflow-x:hidden}
::selection{background:rgba(110,231,255,.25);color:#fff}
::-webkit-scrollbar{width:6px}
::-webkit-scrollbar-track{background:var(--bg)}
::-webkit-scrollbar-thumb{background:#1c2233;border-radius:3px}

body::before{
  content:'';position:fixed;inset:0;
  background:
    radial-gradient(ellipse 80% 50% at 50% -10%, rgba(91,124,158,0.08), transparent 55%),
    radial-gradient(ellipse 40% 30% at 90% 80%, rgba(70,90,130,0.05), transparent 50%),
    linear-gradient(rgba(91,124,158,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(91,124,158,0.025) 1px, transparent 1px);
  background-size:auto,auto,120px 120px,120px 120px;
  pointer-events:none;z-index:0;
}
#particle-canvas{position:fixed;top:0;left:0;width:100%;height:100%;pointer-events:none;z-index:6}

.wrap{position:relative;z-index:5}
section{position:relative;padding:0 6vw}

/* 导航 */
nav{position:fixed;top:0;left:0;right:0;z-index:100;display:flex;align-items:center;justify-content:space-between;
  padding:22px 6vw;transition:background .4s,backdrop-filter .4s,padding .4s,border-color .4s;border-bottom:1px solid transparent}
nav.scrolled{background:rgba(4,5,10,.72);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);padding:14px 6vw;border-color:var(--line)}
.logo{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--txt)}
.logo svg{width:34px;height:34px}
.logo b{font-family:var(--serif);font-size:19px;letter-spacing:.14em;font-weight:700}
.logo small{font-family:var(--mono);font-size:9px;letter-spacing:.32em;color:var(--faint);display:block;margin-top:2px}
.back{font-family:var(--mono);font-size:11px;letter-spacing:.22em;color:var(--dim);text-decoration:none;
  border:1px solid var(--line);padding:9px 20px;border-radius:99px;transition:.35s}
.back:hover{color:var(--cy);border-color:rgba(110,231,255,.4)}

/* 产品 Hero */
.p-hero{padding:22vh 6vw 8vh}
.p-hero .label{font-family:var(--mono);font-size:11px;letter-spacing:.5em;color:var(--cy);display:flex;align-items:center;gap:14px;margin-bottom:30px}
.p-hero .label::before{content:"";width:48px;height:1px;background:linear-gradient(90deg,var(--cy),transparent)}
.p-hero h1{font-family:var(--serif);font-weight:900;font-size:clamp(36px,5.4vw,72px);letter-spacing:.06em;line-height:1.2}
.p-hero h1 em{font-style:normal;background:linear-gradient(105deg,#fff 20%,var(--cy) 55%,var(--bl) 85%);
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.p-hero .sub{max-width:640px;margin-top:26px;color:var(--dim);font-size:16px;line-height:2.05;font-weight:300;letter-spacing:.04em}
.chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px}
.chips span{font-family:var(--mono);font-size:10px;letter-spacing:.2em;color:var(--dim);border:1px solid var(--line);border-radius:99px;padding:7px 15px}

/* 截图框 */
.shot-wrap{padding:6vh 6vw 0}
.shot{border:1px solid var(--line);border-radius:16px;overflow:hidden;background:#0a0e18;box-shadow:0 40px 120px rgba(0,0,0,.55)}
.shot-bar{display:flex;align-items:center;gap:7px;padding:12px 16px;border-bottom:1px solid var(--line)}
.shot-bar i{width:9px;height:9px;border-radius:50%;background:#22304a}
.shot-bar span{font-family:var(--mono);font-size:10px;letter-spacing:.2em;color:var(--faint);margin-left:10px}
.shot img{width:100%;display:block}
.shot-cap{font-family:var(--mono);font-size:10px;letter-spacing:.28em;color:var(--faint);margin-top:16px}

/* 通用节 */
.sector{padding:12vh 6vw}
.sec-head{margin-bottom:56px}
.sec-head .no{font-family:var(--mono);font-size:12px;letter-spacing:.4em;color:var(--cy);display:flex;align-items:center;gap:16px;margin-bottom:20px}
.sec-head .no::after{content:"";flex:1;height:1px;background:var(--line)}
.sec-head h2{font-family:var(--serif);font-weight:900;font-size:clamp(26px,3.4vw,44px);letter-spacing:.06em;line-height:1.3}
.sec-head h2 em{font-style:normal;color:var(--cy)}

/* 痛点卡 */
.pain-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.pain-card{border:1px solid var(--line);background:var(--panel);border-radius:16px;padding:34px 30px;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}
.pain-card .q{font-size:15px;color:var(--txt);font-weight:500;letter-spacing:.06em;margin-bottom:14px;display:flex;gap:10px;align-items:flex-start}
.pain-card .q::before{content:"问";flex:none;font-family:var(--mono);font-size:10px;color:var(--cy);border:1px solid rgba(110,231,255,.35);border-radius:6px;padding:3px 7px;margin-top:2px}
.pain-card .a{color:var(--dim);font-size:13.5px;line-height:1.95;font-weight:300;letter-spacing:.03em}
.pain-card .a b{color:var(--txt);font-weight:500}
@media(max-width:900px){.pain-grid{grid-template-columns:1fr}}

/* 能力卡 */
.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.feat-card{border:1px solid var(--line);background:var(--panel);border-radius:16px;padding:32px 28px;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  transition:transform .45s cubic-bezier(.2,.8,.2,1),border-color .45s}
.feat-card:hover{transform:translateY(-5px);border-color:rgba(110,231,255,.3)}
.feat-card .idx{font-family:var(--mono);font-size:10px;letter-spacing:.3em;color:var(--cy);margin-bottom:18px}
.feat-card h4{font-size:16.5px;letter-spacing:.06em;font-weight:500;margin-bottom:12px}
.feat-card p{color:var(--dim);font-size:13.5px;line-height:1.95;font-weight:300;letter-spacing:.03em}
@media(max-width:900px){.feat-grid{grid-template-columns:1fr}}

/* 流程 */
.flow-line{display:grid;grid-template-columns:1fr 40px 1fr 40px 1fr;align-items:stretch;gap:0}
.flow-node{border:1px solid var(--line);background:var(--panel);border-radius:16px;padding:34px 30px;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}
.flow-node .ph{font-family:var(--mono);font-size:11px;letter-spacing:.32em;color:var(--cy);margin-bottom:16px}
.flow-node h4{font-family:var(--serif);font-size:20px;letter-spacing:.1em;font-weight:700;margin-bottom:14px}
.flow-node p{color:var(--dim);font-size:13px;line-height:1.95;font-weight:300}
.flow-arrow{display:flex;align-items:center;justify-content:center;color:var(--faint);font-size:18px}
@media(max-width:900px){.flow-line{grid-template-columns:1fr}.flow-arrow{transform:rotate(90deg);padding:8px 0}}

/* CTA */
.cta{padding:14vh 6vw;text-align:center}
.cta h2{font-family:var(--serif);font-weight:900;font-size:clamp(26px,3.6vw,48px);letter-spacing:.08em;margin-bottom:18px}
.cta p{color:var(--dim);font-size:15px;font-weight:300;letter-spacing:.06em;margin-bottom:40px}
.btn{display:inline-flex;align-items:center;gap:12px;padding:16px 36px;border-radius:99px;font-size:14px;letter-spacing:.2em;text-decoration:none;transition:.4s}
.btn-solid{color:#04060c;background:linear-gradient(120deg,var(--cy),var(--bl));font-weight:700}
.btn-solid:hover{box-shadow:0 0 44px rgba(110,231,255,.45);transform:translateY(-2px)}
.btn-ghost{color:var(--txt);border:1px solid var(--line);margin-left:14px}
.btn-ghost:hover{border-color:rgba(110,231,255,.5);background:rgba(110,231,255,.05)}

/* 页脚 */
footer{border-top:1px solid var(--line);padding:40px 6vw;position:relative;z-index:5;
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;
  font-family:var(--mono);font-size:10px;letter-spacing:.2em;color:var(--faint)}
footer a{color:var(--faint);text-decoration:none}
footer a:hover{color:var(--cy)}

.rv{opacity:0;transform:translateY(46px);transition:opacity 1s cubic-bezier(.2,.8,.2,1),transform 1s cubic-bezier(.2,.8,.2,1)}
.rv.on{opacity:1;transform:none}
.rv-d1{transition-delay:.12s}.rv-d2{transition-delay:.24s}.rv-d3{transition-delay:.36s}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}.rv{opacity:1;transform:none}}