:root{--navy:#0b2344;--navy-2:#071a34;--blue:#2f8cff;--blue-soft:#eaf3ff;--violet:#8a6ad8;--red:#ed5962;--green:#f0a72f;--ink:#102844;--muted:#6e8098;--line:#d8e3ef;--panel:#fff;--canvas:#f0f4f9}
*{box-sizing:border-box}
html{background:var(--canvas);color:var(--ink)}
body.case-page{margin:0;background:var(--canvas);font-family:"HarmonyOS Sans SC","MiSans","PingFang SC","Microsoft YaHei",sans-serif;letter-spacing:0}
.case-header{height:64px;padding:0 3.3vw;display:flex;align-items:center;gap:36px;background:var(--navy-2);color:#fff;border-bottom:1px solid rgba(255,255,255,.1)}
.case-brand{display:flex;align-items:center;gap:10px;font-weight:800;color:#fff;text-decoration:none}.case-brand svg{width:28px;height:28px;fill:none;stroke:#58b2ff;stroke-width:7;stroke-linecap:round}.case-brand svg circle{fill:#58b2ff;stroke:none}.case-brand b{margin-left:5px;font-size:10px;letter-spacing:.16em;color:#9db0c8}.case-header nav{display:flex;gap:28px;margin-left:auto}.case-header nav a{color:#9fb0c5;text-decoration:none;font-size:13px}.case-header nav a:hover,.case-header nav a.active{color:#fff}.live-chip{font-size:11px;letter-spacing:.12em;color:#9ec7ee;display:flex;align-items:center;gap:8px}.live-chip i{width:7px;height:7px;border-radius:50%;background:#53c9ff;box-shadow:0 0 10px #53c9ff;animation:blink 1.5s infinite}
.case-hero{height:150px;padding:24px 3.3vw 20px;display:flex;align-items:flex-end;justify-content:space-between;background:var(--navy);color:#fff}.case-kicker{margin:0 0 9px;padding-left:13px;border-left:3px solid #55b4ff;font-size:12px;letter-spacing:.14em;color:#a6bad1}.case-hero h1{margin:0;font-size:31px;line-height:1.2;color:#fff}.case-hero p:not(.case-kicker){margin:8px 0 0;color:#aebed0}.case-identity{text-align:right}.case-identity strong{display:block;font-size:30px}.case-identity span{display:block;margin-top:8px;font-size:10px;letter-spacing:.15em;color:#9db0c8}
.case-toolbar{min-height:54px;padding:8px 3.3vw;display:flex;align-items:center;gap:24px;background:#fff;border-bottom:1px solid var(--line)}.mode-switch{display:flex;border:1px solid var(--line);border-radius:4px;overflow:hidden}.mode-switch button{padding:8px 14px;border:0;border-right:1px solid var(--line);background:#fff;color:var(--muted);font:inherit;font-size:12px;cursor:pointer}.mode-switch button:last-child{border-right:0}.mode-switch button.is-active{background:var(--navy);color:#fff}.legend{display:flex;gap:18px;margin-left:auto;font-size:11px;color:var(--muted)}.legend span{display:flex;align-items:center;gap:6px}.legend i{width:18px;height:2px}.legend .blue{background:var(--blue)}.legend .violet{background:var(--violet);border-top:1px dashed #fff}.legend .red{background:var(--red)}.legend .green{background:var(--green)}.icon-button{width:34px;height:34px;display:grid;place-items:center;border:1px solid var(--line);border-radius:4px;background:#fff;color:var(--navy);cursor:pointer}.icon-button:hover{border-color:var(--blue);color:var(--blue)}.icon-button svg{width:17px;height:17px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.overview-grid{padding:18px 3.3vw 12px;display:grid;grid-template-columns:220px minmax(780px,1fr) 220px;gap:16px}.case-panel{background:var(--panel);border:1px solid #e4ebf3;border-radius:10px;box-shadow:0 6px 18px rgba(11,35,68,.04)}.panel-title{height:47px;padding:0 16px;display:flex;align-items:center;gap:11px;border-bottom:1px solid var(--line)}.panel-title span{font-size:13px;font-weight:800;color:var(--blue)}.panel-title h2{font-size:16px;margin:0}.panel-title em{margin-left:auto;font-size:10px;font-style:normal;color:var(--muted)}
.scenario-panel,.value-panel{padding-bottom:16px}.scenario-block,.scale-block{margin:0 15px;padding:17px 0;border-bottom:1px solid var(--line)}.scenario-block:last-child,.scale-block:last-child{border-bottom:0}.tag{display:inline-block;padding:3px 8px;border-radius:3px;background:var(--blue-soft);color:var(--blue);font-size:10px}.scenario-block h3,.value-item h3{font-size:15px;margin:13px 0 7px}.scenario-block p,.value-item p{font-size:12px;line-height:1.7;color:var(--muted);margin:0}.threat-list{padding:0;margin:8px 0 0;list-style:none}.threat-list li{position:relative;padding:5px 0 5px 16px;font-size:12px;color:var(--muted)}.threat-list li::before{content:"";position:absolute;left:2px;top:12px;width:5px;height:5px;border-radius:50%;background:var(--red);box-shadow:0 0 7px rgba(237,89,98,.5)}.scale-block>span{font-size:13px;font-weight:800}.scale-block strong{display:block;margin-top:7px;font-size:25px;color:var(--blue)}.scale-block small{font-size:11px;color:var(--ink)}.scale-block p{font-size:11px;color:var(--muted)}
.topology-panel{padding-bottom:10px;overflow:hidden}.internet-band{height:34px;margin:11px 16px 0;display:flex;align-items:center;justify-content:center;border-radius:5px;background:var(--blue-soft);color:#2581e4;font-size:12px;font-weight:700}.topology-stage{position:relative;height:510px;margin:0 16px}.flow-layer{position:absolute;inset:0;width:100%;height:100%;z-index:1;overflow:visible}.flow-layer path{fill:none;stroke-width:2;vector-effect:non-scaling-stroke}.ingress-lines path{stroke:var(--blue);marker-end:url(#arrowBlue)}.bgp-lines path{stroke:var(--violet);stroke-dasharray:5 5;marker-end:url(#arrowViolet)}.center-links path{stroke:var(--navy);stroke-dasharray:4 4}.attack-path{stroke:var(--red);marker-end:url(#arrowRed)}.clean-path{stroke:var(--green);marker-end:url(#arrowGreen)}.normal-path{stroke:var(--blue);marker-end:url(#arrowBlue)}.packet-dots circle{stroke:#fff;stroke-width:1}.blue-packets circle{fill:var(--blue)}.violet-packets circle{fill:var(--violet)}.attack-packets circle{fill:var(--red);filter:drop-shadow(0 0 5px rgba(237,89,98,.8))}.clean-packets circle{fill:var(--green);filter:drop-shadow(0 0 5px rgba(32,162,122,.7))}.normal-packets circle{fill:var(--blue)}
.pop-row{position:absolute;z-index:2;left:0;right:0;top:92px;display:grid;grid-template-columns:repeat(5,1fr);gap:12px}.pop-card{position:relative;min-width:0;padding:12px 11px 10px;border:1px solid #bcd1e8;border-radius:6px;background:rgba(255,255,255,.94);box-shadow:0 5px 15px rgba(13,53,92,.04);transition:border-color .25s,box-shadow .25s,transform .25s}.pop-card::before{content:"";position:absolute;top:-4px;left:14px;width:8px;height:8px;border-radius:50%;background:var(--blue);box-shadow:0 0 0 4px rgba(47,140,255,.12)}.pop-card.is-active{border-color:var(--blue);box-shadow:0 0 0 2px rgba(47,140,255,.12),0 12px 25px rgba(47,140,255,.13);transform:translateY(-3px)}.pop-code{float:right;font-size:8px;letter-spacing:.08em;color:#8392a6}.pop-card h3{font-size:14px;margin:0 0 5px}.pop-card p{font-size:9px;color:var(--muted);margin:0 0 8px;padding-bottom:7px;border-bottom:1px solid var(--line)}.pop-card b{display:block;font-size:11px;color:var(--navy)}.pop-card small{font-size:9px;color:var(--blue)}.backbone{position:absolute;z-index:3;left:0;right:0;top:285px;height:31px;display:flex;align-items:center;justify-content:center;border-radius:4px;background:var(--navy);color:#fff;font-size:11px;font-weight:700;letter-spacing:.03em}.pulse-node{position:absolute;right:15px;width:7px;height:7px;border-radius:50%;background:#55b4ff;box-shadow:0 0 0 0 rgba(85,180,255,.65);animation:pulse 1.8s infinite}.local-flow{position:absolute;z-index:2;left:0;right:0;top:335px;height:165px}.endpoint{position:absolute;top:40px;width:145px;height:42px;display:flex;align-items:center;gap:10px;padding:0 10px;border:1px solid #c5d5e6;border-radius:6px;background:#fff;font-size:11px;font-weight:700}.endpoint i{width:24px;height:24px;border:1px solid var(--blue);border-radius:50%;display:grid;place-items:center;color:var(--blue);font-style:normal}.router{left:4%}.origin{right:3%}.path-label{position:absolute;top:14px;left:24%;right:24%;text-align:center;font-size:9px;color:var(--blue)}.scrubber{position:absolute;left:36%;bottom:0;width:28%;height:67px;padding:10px 10px 8px 47px;border:1px solid #9fc4ed;border-radius:7px;background:#eaf3ff;text-align:center}.scrubber::after{content:"攻击丢弃";position:absolute;left:50%;bottom:-25px;transform:translateX(-50%);color:var(--red);font-size:9px}.shield-icon{position:absolute;left:12px;top:15px;width:30px;height:36px;display:grid;place-items:center;clip-path:polygon(50% 0,95% 18%,87% 72%,50% 100%,13% 72%,5% 18%);background:var(--blue);color:#fff;font-weight:800}.scrubber strong{display:block;font-size:11px}.scrubber small{display:block;margin-top:3px;font-size:9px;color:var(--blue)}
.value-item{margin:0 15px;padding:18px 0;border-bottom:1px solid var(--line)}.value-item:last-child{border-bottom:0}.value-item>b{display:grid;place-items:center;width:28px;height:28px;border-radius:50%;background:#eef5fd;color:var(--blue);font-size:10px}.value-item p strong{font-size:22px;color:var(--blue);line-height:1.5}.case-footer{padding:0 3.3vw 18px;display:flex;align-items:center;justify-content:space-between;font-size:11px;color:var(--muted)}.case-footer strong{font-size:13px;color:var(--ink)}
body[data-mode="normal"] .attack-packets,body[data-mode="normal"] .clean-packets,body[data-mode="normal"] .attack-path,body[data-mode="normal"] .clean-path{opacity:.08}body[data-mode="normal"] .normal-packets,body[data-mode="normal"] .normal-path{opacity:1}body:not([data-mode="normal"]) .normal-packets,body:not([data-mode="normal"]) .normal-path{opacity:.12}body[data-mode="bgp"] .packet-dots:not(.violet-packets){opacity:.08}body[data-mode="bgp"] .flow-layer path:not([id^="bgp"]){opacity:.12}body[data-mode="bgp"] .bgp-lines path{stroke-width:3}.is-paused .flow-layer{animation-play-state:paused}.is-paused animateMotion{animation-play-state:paused}
@keyframes blink{50%{opacity:.35}}@keyframes pulse{70%{box-shadow:0 0 0 9px rgba(85,180,255,0)}}
@media(max-width:1350px){.overview-grid{grid-template-columns:200px minmax(740px,1fr) 200px}.pop-row{gap:8px}.pop-card{padding-left:8px;padding-right:8px}}
@media(prefers-reduced-motion:reduce){.live-chip i,.pulse-node{animation:none}.packet-dots{display:none}}

/* detailed topology page */
.topology-hero{height:132px}.detail-layout{padding:16px 3.3vw 12px}.global-panel{overflow:hidden}.global-stage{position:relative;height:330px;margin:0 16px}.global-flow-layer{position:absolute;inset:0;width:100%;height:100%;z-index:1}.global-flow-layer path{fill:none;stroke-width:2;vector-effect:non-scaling-stroke}.global-flow-layer .ingress-lines path{marker-end:url(#gArrowBlue)}.global-flow-layer .bgp-lines path{marker-end:url(#gArrowViolet)}.fabric-lines path{stroke:var(--navy);stroke-dasharray:3 3}.device-pops{position:absolute;z-index:2;left:0;right:0;top:68px;display:grid;grid-template-columns:repeat(5,1fr);gap:16px}.device-pop{padding:0 10px 10px}.device-pop header{height:38px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.device-pop header span{font-size:16px;font-weight:800}.device-pop header small{font-size:7px;color:var(--muted)}.device-pop>p{margin:6px 0;font-size:9px;color:var(--muted)}.device-list{display:grid;gap:3px}.device-list b{display:flex;justify-content:space-between;padding:2px 5px;border-radius:2px;background:#edf5ff;color:#40536b;font-size:9px;font-weight:500}.device-list b::first-letter{color:var(--blue)}.device-list em{font-style:normal;color:var(--blue)}.global-backbone{position:absolute;z-index:3;left:0;right:0;bottom:8px;height:29px;display:flex;align-items:center;justify-content:center;border-radius:4px;background:var(--navy);color:#fff;font-size:11px;font-weight:700;overflow:hidden}.fabric-scan{position:absolute;left:-20%;top:0;width:20%;height:100%;background:linear-gradient(90deg,transparent,rgba(85,180,255,.6),transparent);animation:scan 4s linear infinite}.lower-grid{display:grid;grid-template-columns:minmax(700px,2fr) minmax(300px,.95fr);gap:14px;margin-top:14px}.local-detail-panel{overflow:hidden}.local-detail-stage{position:relative;height:180px;margin:12px 16px}.local-detail-stage svg{position:absolute;inset:0;width:100%;height:100%}.local-detail-stage path{fill:none;stroke-width:2;vector-effect:non-scaling-stroke}.ld-node{position:absolute;top:31px;width:145px;height:40px;display:flex;align-items:center;gap:9px;padding:0 10px;border:1px solid #c7d6e6;border-radius:5px;background:#fff;font-size:11px}.ld-node i{width:24px;height:24px;border:1px solid var(--blue);border-radius:50%;display:grid;place-items:center;color:var(--blue);font-style:normal}.ld-router{left:0}.ld-origin{right:0}.ld-scrubber{position:absolute;left:34%;bottom:2px;width:32%;height:62px;padding:9px 8px 6px 44px;border:1px solid #9fc4ed;border-radius:6px;background:#eaf3ff;text-align:center}.ld-scrubber span{position:absolute;left:11px;top:13px;width:28px;height:34px;display:grid;place-items:center;clip-path:polygon(50% 0,95% 18%,87% 72%,50% 100%,13% 72%,5% 18%);background:var(--blue);color:#fff;font-weight:800}.ld-scrubber strong{font-size:12px}.ld-scrubber small{display:block;margin-top:3px;font-size:9px;color:var(--blue)}.ld-label{position:absolute;font-size:9px}.ld-normal{top:8px;left:35%;color:var(--blue)}.ld-attack{left:8%;bottom:34px;color:var(--red)}.ld-clean{right:10%;bottom:34px;color:var(--green)}.capacity-panel{padding-bottom:14px}.capacity-meter{position:relative;margin:0 16px;padding:13px 0 16px;border-bottom:1px solid var(--line)}.capacity-meter span{font-size:11px;color:var(--muted)}.capacity-meter strong{display:block;margin-top:2px;color:var(--blue);font-size:25px}.capacity-meter small{font-size:11px;color:var(--ink)}.capacity-meter i{position:absolute;left:0;bottom:7px;width:var(--w);height:3px;background:linear-gradient(90deg,var(--blue),#67bdff);box-shadow:0 0 8px rgba(47,140,255,.35);animation:meter 1.1s ease both}.capacity-panel>p{margin:12px 16px 0;font-size:9px;color:var(--muted)}
@keyframes scan{to{left:120%}}@keyframes meter{from{width:0}to{width:var(--w)}}
@media(max-width:1350px){.device-pops{gap:9px}.lower-grid{grid-template-columns:minmax(680px,2fr) 280px}}
body[data-mode="bgp"] .global-flow-layer .bgp-lines path{opacity:1!important;stroke-width:3}
@media(max-width:900px){
	.case-header{height:58px;padding:0 18px;gap:14px}.case-header nav{display:none}.case-brand{font-size:14px}.live-chip{margin-left:auto;font-size:9px}
	.case-hero,.topology-hero{height:auto;min-height:156px;padding:26px 20px 22px;align-items:flex-start}.case-hero h1{font-size:26px;max-width:320px}.case-hero p:not(.case-kicker){font-size:12px}.case-identity{display:none}
	.case-toolbar{padding:9px 16px;gap:10px;flex-wrap:wrap}.mode-switch{order:1}.legend{order:3;width:100%;margin:2px 0 0;overflow-x:auto;white-space:nowrap;padding-bottom:3px}.icon-button{order:2}.mode-switch button{padding:7px 10px}
	.overview-grid{padding:12px;grid-template-columns:1fr}.scenario-panel{display:grid;grid-template-columns:1fr 1fr}.scenario-panel .panel-title{grid-column:1/-1}.scenario-panel .scale-block{grid-column:1/-1}.value-panel{display:grid;grid-template-columns:1fr}.topology-panel{overflow-x:auto}.topology-panel>.panel-title{position:sticky;left:0;min-width:340px}.topology-panel>.internet-band,.topology-stage{width:930px}.case-footer{padding:4px 16px 18px;align-items:flex-start;flex-direction:column;gap:6px}
	.detail-layout{padding:12px}.global-panel{overflow-x:auto}.global-panel>.panel-title{position:sticky;left:0}.global-panel>.internet-band,.global-stage{width:1120px}.lower-grid{grid-template-columns:1fr}.local-detail-panel{overflow-x:auto}.local-detail-panel>.panel-title{position:sticky;left:0;min-width:340px}.local-detail-stage{width:760px}.capacity-panel{min-width:0}
}
@media(max-width:520px){.scenario-panel{grid-template-columns:1fr}.scenario-panel .panel-title,.scenario-panel .scale-block{grid-column:auto}.case-kicker{font-size:10px}.panel-title em{display:none}}