:root{--bg:#080d24;--bg2:#0c1230;--card:#111938;--card2:#17214a;--text:#f5f7ff;--muted:#9aa7ca;--dim:#68769f;--blue:#5e7bff;--violet:#7656e8;--cyan:#35c8e8;--gold:#e3c374;--green:#3ddc97;--line:rgba(139,160,255,.25);--max:1180px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:radial-gradient(900px 600px at 78% 8%,rgba(70,92,240,.13),transparent 60%),var(--bg);color:var(--text);font:15px/1.75 "Microsoft YaHei","PingFang SC",system-ui,sans-serif;overflow-x:hidden}a{text-decoration:none;color:inherit}img{display:block;max-width:100%}.ambient{position:absolute;width:520px;height:520px;border-radius:50%;opacity:.2;pointer-events:none}.a1{background:radial-gradient(circle,#405cff 0%,transparent 68%);top:500px;left:-300px}.a2{background:radial-gradient(circle,#8b4fe7 0%,transparent 68%);top:1750px;right:-300px}.nav{height:74px;position:sticky;top:0;z-index:40;display:flex;align-items:center;justify-content:space-between;max-width:var(--max);margin:auto;padding:0 24px;background:rgba(8,13,36,.82);backdrop-filter:blur(14px);border-bottom:1px solid rgba(139,160,255,.1)}.brand{display:flex;align-items:center;gap:9px;font-size:18px;font-weight:800}.brand img{width:30px}.brand 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solid rgba(61,220,151,.25);border-radius:13px;background:rgba(16,30,48,.72);box-shadow:0 0 40px rgba(61,220,151,.07)}.data-card span{font-size:8px;color:var(--green);letter-spacing:.15em}.data-card strong{display:block;font-size:14px;margin-top:9px}.data-card small{display:block;color:#7080a5;font-size:9px;margin-top:13px}.plans{display:grid;grid-template-columns:repeat(5,1fr);gap:13px}.plans article{position:relative;padding:26px 20px;border:1px solid var(--line);border-radius:17px;background:linear-gradient(145deg,#151e42,#10162f);min-height:330px}.plans article.best{background:radial-gradient(circle at 75% 5%,rgba(227,195,116,.11),transparent 35%),linear-gradient(145deg,#1a2246,#11182f);border-color:rgba(227,195,116,.55);box-shadow:0 25px 80px rgba(61,65,145,.18)}.plans article>label{position:absolute;top:19px;right:20px;font-size:9px;color:var(--gold);border:1px solid rgba(227,195,116,.35);padding:3px 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b{color:#a7b4d2}.download-box{padding:65px;border-radius:22px;border:1px solid rgba(112,140,255,.35);background:radial-gradient(circle at 80% 40%,rgba(91,82,220,.22),transparent 36%),linear-gradient(145deg,#151f45,#0e1530);display:flex;justify-content:space-between;gap:50px;align-items:center;overflow:hidden;position:relative}.download-copy h2{font-size:41px;line-height:1.25;margin:13px 0}.download-copy p{color:#aab5d4;font-size:13px}.download-copy small{color:#69789f;font-size:10px}.download-action{min-width:330px;display:flex;flex-direction:column;align-items:center}.large{width:100%;font-size:15px;padding:15px}.download-action>a:not(.btn){font-size:11px;color:#8798c5;margin:14px}.download-action code{font-size:9px;color:#8798c5}.faq .section-title{margin-bottom:35px}.faq-list{border-top:1px solid var(--line)}details{border-bottom:1px solid rgba(139,160,255,.17)}summary{cursor:pointer;list-style:none;padding:20px 3px;display:flex;justify-content:space-between;font-weight:700}summary::-webkit-details-marker{display:none}.faq-list p{color:var(--muted);font-size:13px;margin:0 3px 20px}.faq-list a{color:#9eb2ff}.legal{max-width:var(--max);margin:auto;padding:0 24px 80px}.legal details{border-color:rgba(139,160,255,.12)}.legal p{color:#7d8bae;font-size:12px}.legal strong{color:#b9c4df}footer{max-width:var(--max);margin:auto;border-top:1px solid rgba(139,160,255,.12);padding:34px 24px 50px;display:grid;grid-template-columns:1fr auto;gap:15px}.foot-brand{display:flex;gap:10px;align-items:center}.foot-brand img{width:34px}.foot-brand div{display:flex;flex-direction:column}.foot-brand b{font-size:14px}.foot-brand span{font-size:10px;color:#617097}.foot-links{display:flex;gap:22px;color:#7382a7;font-size:11px}.copyright,footer>small{grid-column:1/-1;color:#7d8bae;font-size:10px}
html.js .reveal{opacity:0;transform:translateY(22px);transition:opacity .8s ease,transform .8s ease}html.js .reveal.show{opacity:1;transform:none}
@keyframes float{0%,100%{transform:perspective(1200px) rotateY(-5deg) rotateX(2deg) translateY(0)}50%{transform:perspective(1200px) rotateY(-3deg) rotateX(1deg) translateY(-9px)}}@keyframes spin{to{transform:rotate(360deg)}}@keyframes scan{0%,100%{transform:translateY(-170px);opacity:0}30%,70%{opacity:.45}50%{transform:translateY(170px)}}@keyframes tag1{50%{transform:translate(5px,-8px)}}@keyframes tag2{50%{transform:translate(-4px,7px)}}@keyframes shine{50%{opacity:.35;transform:translateX(20px)}}@keyframes beam{to{transform:translateX(145px)}}@keyframes marquee{to{transform:translateX(-50%)}} 
@media(max-width:900px){.nav nav{display:none}.hero{grid-template-columns:1fr;padding-top:70px}.hero-visual{height:480px}.section-title{display:block}.section-title p{margin-top:20px}.feature-grid{grid-template-columns:1fr 1fr}.feature.big{grid-row:auto;min-height:350px}.timeline{grid-template-columns:1fr}.plans{grid-template-columns:repeat(3,1fr)}.trace-demo{gap:25px}.download-box{flex-direction:column;align-items:flex-start}.download-action{width:100%}}
@media(max-width:600px){body{font-size:14px}.brand i,.nav-btn{display:none}.nav{padding:0 17px}.hero{padding:55px 18px;min-height:auto}.hero h1{font-size:48px}.hero-copy>p{font-size:14px}.hero-visual{height:390px}.visual-window{transform:none}.vw-main{grid-template-columns:72px 1fr}.vw-main aside{font-size:8px}.vw-main aside span{display:none}.ui{padding:14px 10px}.metrics{grid-template-columns:1fr}.ui-grid{grid-template-columns:1fr}.result{grid-column:auto}.floating-tag{display:none}.section{padding:80px 18px}.section-title h2{font-size:31px}.feature-grid{grid-template-columns:1fr}.feature.big{min-height:300px}.trace-demo{height:520px;flex-direction:column}.trace-beam{width:1px;height:80px;background:linear-gradient(180deg,transparent,var(--cyan),transparent)}.data-card{width:230px}.screen-stage{min-height:390px}.screen-main{width:92%}.screen-side{width:62%;bottom:0}.download-box{padding:35px 25px}.download-copy h2{font-size:31px}.plans{grid-template-columns:1fr}footer{grid-template-columns:1fr}.foot-links{flex-wrap:wrap}}

.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:1px solid var(--line);border-radius:10px;padding:10px 11px;cursor:pointer}
.nav-toggle b{display:block;width:16px;height:1.6px;background:#c6d1f2}
@media(max-width:900px){
.nav-toggle{display:flex}
.nav nav{display:none;position:fixed;top:74px;left:0;right:0;flex-direction:column;gap:0;background:rgba(8,13,36,.96);backdrop-filter:blur(14px);border-bottom:1px solid rgba(139,160,255,.15);padding:10px 24px 16px;z-index:39}
.nav nav a{padding:13px 2px;border-bottom:1px solid rgba(139,160,255,.08);font-size:14px}
body.nav-open .nav nav{display:flex}
.nav-toggle[aria-expanded="true"] b:nth-child(1){transform:translateY(6.6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] b:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] b:nth-child(3){transform:translateY(-6.6px) rotate(-45deg)}
}

.robust-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:13px}
.rob-card{padding:26px 24px;border-radius:17px;border:1px solid rgba(61,220,151,.22);
background:linear-gradient(145deg,rgba(18,32,44,.85),rgba(12,20,42,.9));transition:.3s}
.rob-card:hover{transform:translateY(-4px);border-color:rgba(61,220,151,.5)}
.rob-card b{font-size:16px}
.rob-card p{margin:7px 0 22px;color:var(--muted);font-size:12px}
.rob-card em{font-style:normal;color:var(--green);font-size:20px;font-weight:800;letter-spacing:.02em}
.rob-note{margin-top:18px;color:#66749a;font-size:11px}
@media(max-width:900px){.robust-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:600px){.robust-grid{grid-template-columns:1fr}.rob-card em{font-size:17px}}

/* 减动效: 系统开启"减少动态效果"时停掉所有装饰动画 */
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}

/* 技术说明 */
.tech-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:28px}
.tech-card{background:linear-gradient(145deg,rgba(24,34,75,.92),rgba(13,20,46,.92));
  border:1px solid var(--line);border-radius:17px;padding:26px 24px 22px;
  transition:.35s}
.tech-card:hover{transform:translateY(-6px);border-color:rgba(112,142,255,.55);
  box-shadow:0 20px 60px rgba(0,0,0,.24)}
.tech-head{display:flex;gap:13px;align-items:center;margin-bottom:18px;
  padding-bottom:16px;border-bottom:1px solid rgba(139,160,255,.14)}
.tech-ico{width:40px;height:40px;border-radius:11px;display:flex;align-items:center;
  justify-content:center;font-size:18px;
  background:linear-gradient(135deg,rgba(47,99,232,.3),rgba(91,69,214,.3));
  border:1px solid rgba(150,175,255,.28)}
.tech-head h3{font-size:16px;font-weight:700;color:#F3F5F7;margin:0 0 3px;line-height:1.3}
.tech-head small{font-size:9px;letter-spacing:.14em;color:#838D99;line-height:1}
.tech-card ul{list-style:none;margin:0;padding:0;display:grid;gap:14px}
.tech-card li{font-size:12.5px;line-height:1.8;color:#98A2B3;
  padding:12px 14px;border-radius:10px;
  background:rgba(255,255,255,.025);border:1px solid rgba(139,160,255,.1)}
.tech-card li b{display:block;color:#DAE0EA;font-weight:600;font-size:13px;
  margin-bottom:3px}
.tech-card li span{display:block}
@media(max-width:900px){.tech-grid{grid-template-columns:1fr}}

/* 07 下载区: 与定价卡同构的双版本卡片 */
.dl-grid{display:grid;grid-template-columns:1fr 1fr;gap:13px}
.dl-grid article{position:relative;display:flex;flex-direction:column;min-width:0;padding:30px;border:1px solid var(--line);border-radius:17px;background:linear-gradient(145deg,#151e42,#10162f);min-height:330px;transition:.35s}
.dl-grid article:hover{transform:translateY(-6px);border-color:rgba(112,142,255,.55);box-shadow:0 20px 60px rgba(0,0,0,.24)}
.dl-grid article.best{background:radial-gradient(circle at 75% 5%,rgba(227,195,116,.11),transparent 35%),linear-gradient(145deg,#1a2246,#11182f);border-color:rgba(227,195,116,.55);box-shadow:0 25px 80px rgba(61,65,145,.18)}
.dl-grid article>label{position:absolute;top:19px;right:20px;font-size:9px;color:var(--gold);border:1px solid rgba(227,195,116,.35);padding:3px 8px;border-radius:20px}
.dl-grid h3{font-size:21px;margin:24px 0 0}
.dl-size{font-size:34px;font-weight:800;letter-spacing:-.05em;margin:8px 0 4px}
.dl-size small{font-size:11px;color:#7e8caf;font-weight:500;letter-spacing:0}
.dl-grid p{color:var(--muted);font-size:13px;margin:0 0 18px}
.dl-grid .btn{width:100%;margin-top:auto}
.dl-sha{display:block;margin-top:14px;font-size:10px;color:#8798c5;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.dl-foot{display:flex;justify-content:space-between;align-items:baseline;gap:24px;padding:12px 3px 0;color:#66769f;font-size:11px}
.dl-foot a{color:#9eb2ff;white-space:nowrap}
@media(max-width:900px){.dl-grid{grid-template-columns:1fr}.dl-grid article{min-height:0}}

/* 03 防护原理: 真实图片滑块对比 + 放大镜 */
.trace-demo{height:auto;min-height:0;padding:38px;gap:44px}
.cmp{position:relative;width:min(430px,50%);aspect-ratio:1073/1600;border-radius:14px;border:1px solid rgba(141,164,255,.3);overflow:hidden;cursor:ew-resize;touch-action:pan-y;user-select:none;flex:none;background:#0a102a}
.cmp:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}
.cmp img{width:100%;height:100%;object-fit:cover;display:block;pointer-events:none}
.cmp-after{position:absolute;inset:0;clip-path:inset(0 0 0 50%)}
.cmp-tag{position:absolute;top:14px;z-index:4;font-size:10px;letter-spacing:.14em;padding:5px 10px;border-radius:20px;background:rgba(10,16,38,.78);border:1px solid rgba(139,160,255,.28);color:#8fa3d4}
.cmp-tag.l{left:14px}.cmp-tag.r{right:14px;color:#7fe3b8;border-color:rgba(61,220,151,.4)}
.cmp-handle{position:absolute;top:0;bottom:0;left:50%;width:2px;margin-left:-1px;background:linear-gradient(180deg,transparent,#35c8e8 12%,#35c8e8 88%,transparent);z-index:3;pointer-events:none}
/* 拖动手柄圆点已按要求移除(只保留渐变线) */
.cmp-lens{position:absolute;width:176px;height:176px;border-radius:50%;border:2px solid rgba(53,200,232,.95);box-shadow:0 0 0 9999px rgba(6,10,28,.22),0 14px 44px rgba(0,0,0,.5);background:#0a102a no-repeat;pointer-events:none;opacity:0;transition:opacity .18s;transform:translate(-50%,-50%);z-index:6}
.trace-side{display:flex;flex-direction:column;gap:24px;width:250px;flex:none}
.trace-side .data-card{width:100%}
.diff-fig{margin:0}
.diff-fig img{width:100%;border-radius:10px;border:1px solid rgba(61,220,151,.22);display:block}
.diff-fig figcaption{display:block;text-align:center;padding:8px 2px 0;color:#66769f;font-size:10px;letter-spacing:.08em}
.cmp-hint{margin-top:22px;text-align:center;color:#66769f;font-size:11px;letter-spacing:.14em}
@media(max-width:900px){.trace-demo{padding:26px;gap:26px}.cmp{width:min(430px,100%)}.trace-side{width:min(430px,100%);flex-direction:row;align-items:stretch}.trace-side .data-card{flex:1}.diff-fig{width:46%}}
@media(max-width:600px){.trace-side{flex-direction:column}.diff-fig{width:100%}.cmp-hint{letter-spacing:.06em}}

/* 独立像素检视图(放大镜宿主) */
.lens-strip{margin-top:22px}
.lens-box{position:relative;border-radius:14px;border:1px solid rgba(141,164,255,.3);overflow:hidden;cursor:zoom-in;user-select:none;background:#0a102a}
.lens-box img{width:100%;display:block;pointer-events:none}
.lens-cap{margin:0;padding:9px 2px 0;text-align:center;color:#66769f;font-size:10px;letter-spacing:.1em}
@media(max-width:600px){.lens-cap{letter-spacing:.05em}}

/* 法律要点区: 分组小标题(文字流版) */
.legal h4{margin:20px 3px 10px;font-size:12px;letter-spacing:.14em;color:#8ea2e8;font-weight:700}


/* hero 背景图: 全宽铺满(比例保持/纵向裁切), 内容仍约束在原居中宽度 */
.hero{max-width:none;margin:0;padding:90px max(24px,calc((100% - 1132px)/2)) 80px;background:url("assets/hero-bg3.jpg") center/cover no-repeat}
@media(max-width:900px){.hero{padding-top:70px}}
@media(max-width:600px){.hero{padding:55px max(18px,calc((100% - 1132px)/2))}}

/* hero 去右侧视觉块: 单列布局, 文案限宽 */
.hero{grid-template-columns:1fr}
.hero-copy{max-width:640px}

/* ===== 客户群体章节(能力之后) ===== */
.audience-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:13px}
.audience{position:relative;padding:28px;border-radius:17px;border:1px solid var(--line);background:linear-gradient(145deg,rgba(24,34,75,.92),rgba(13,20,46,.92));min-height:255px;transition:.35s;display:flex;flex-direction:column}
.audience:hover{transform:translateY(-6px);border-color:rgba(112,142,255,.55);box-shadow:0 20px 60px rgba(0,0,0,.24)}
.audience h3{font-size:19px;margin:0 0 10px;letter-spacing:-.02em}
.audience .pain{color:var(--muted);font-size:13px;margin:0 0 14px;line-height:1.8}
.audience .sol{font-size:12px;color:#9eb2ff;border-top:1px solid rgba(139,160,255,.14);padding-top:12px;margin:auto 0 0;line-height:1.75}
.audience .sol:before{content:'✓ ';color:var(--gold);font-weight:800}
.audience.w2{grid-column:span 2}.audience.w3{grid-column:span 3}
@media(max-width:900px){.audience-grid{grid-template-columns:1fr 1fr}.audience.w2,.audience.w3{grid-column:auto}}
@media(max-width:600px){.audience-grid{grid-template-columns:1fr}}
.audience .a-ic{width:36px;height:36px;color:#aabaff;margin-bottom:18px;opacity:.9}
.audience:hover .a-ic{color:#c9d4ff;opacity:1}