/* =========================================================================
   万观 AGI · 欢迎页 v4（本地原型，未上线）
   颜色取自线上 wgci.cn :root（--brand / --ink-* / --text / --muted / --line）
   结构：1 令牌 → 2 基础 → 3 背景 → 4 组件 → 5 板块 → 6 动态示意 → 7 浮层 → 8 响应式 → 9 降级
   ========================================================================= */
/* 1 · 令牌（开发接入时集中改这里） */
:root{
  --brand:#F5A623; --brand-2:#FFBE55; --brand-soft:rgba(245,166,35,.12); --brand-ink:#1A1205;
  --ink-0:#07090D; --ink-1:#0C1016; --ink-2:#121822; --ink-3:#1A2230;
  --line:#232C3B; --line-2:#2E3A4D; --text:#E9EDF3; --text-2:#C3CBD7; --muted:#93A0B4; --faint:#5E6B7E;
  --blue:#4C9AFF; --green:#3ECF8E; --purple:#A78BFA;
  --font:-apple-system,BlinkMacSystemFont,"SF Pro Text","SF Pro Display","PingFang SC","Noto Sans CJK SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  --fs-display:44px;--lh-display:54px; --fs-title:30px;--lh-title:38px; --fs-head:20px;--lh-head:28px;
  --fs-body:16px;--lh-body:26px; --fs-callout:15px;--lh-callout:24px; --fs-foot:13px;--lh-foot:18px;
  --r-sm:8px;--r-md:10px;--r-lg:16px;--r-xl:22px;
  --glass:rgba(18,24,34,.62); --glass-strong:rgba(12,16,22,.86); --blur:saturate(160%) blur(24px);
  --hl:inset 0 .5px 0 rgba(255,255,255,.10),inset 0 0 0 .5px rgba(255,255,255,.06);
  --e1:0 1px 2px rgba(0,0,0,.4),0 8px 24px rgba(0,0,0,.28); --e2:0 2px 6px rgba(0,0,0,.45),0 18px 48px rgba(0,0,0,.42); --e3:0 30px 90px rgba(0,0,0,.6);
  --spring:cubic-bezier(.32,.72,0,1); --ease:cubic-bezier(.22,.7,.28,1); --bounce:cubic-bezier(.34,1.56,.64,1);
  --t1:120ms;--t2:240ms;--t3:420ms;--t4:520ms;
  --maxw:1200px; --gutter:24px; --sec-gap:112px;
}
/* 2 · 基础 */
*{box-sizing:border-box;margin:0;padding:0}
html{background:var(--ink-0);scroll-behavior:smooth;scroll-padding-top:72px;-webkit-font-smoothing:antialiased}
body{font-family:var(--font);font-size:var(--fs-body);line-height:var(--lh-body);color:var(--text);background:var(--ink-0);overflow-x:hidden}
a{color:inherit;text-decoration:none} button,input,select{font:inherit;color:inherit}
img{display:block;max-width:100%}
.ico{width:20px;height:20px;flex:none;stroke-width:1.75}.ico.md{width:24px;height:24px}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 var(--gutter)}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:8px}
/* 3 · 连续沉浸背景（视口级，全页唯一背景） */
.bg-scene{position:fixed;inset:0;z-index:-1;pointer-events:none;overflow:hidden;
  background:radial-gradient(1100px 700px at 85% -10%,rgba(245,166,35,.18),transparent 60%),
   radial-gradient(900px 700px at -10% 45%,rgba(76,154,255,.12),transparent 62%),
   radial-gradient(1000px 800px at 60% 115%,rgba(167,139,250,.10),transparent 60%),
   linear-gradient(180deg,#07090D 0%,#0A0F18 45%,#0F1626 100%)}
.bg-scene i{position:absolute;border-radius:50%;filter:blur(80px);opacity:.5;will-change:transform}
.bg-scene .o1{width:520px;height:520px;background:rgba(245,166,35,.16);top:-120px;right:8%;animation:drift1 26s ease-in-out infinite alternate}
.bg-scene .o2{width:600px;height:600px;background:rgba(76,154,255,.10);top:40%;left:-160px;animation:drift2 32s ease-in-out infinite alternate}
.bg-scene .o3{width:480px;height:480px;background:rgba(167,139,250,.09);bottom:-160px;right:20%;animation:drift1 38s ease-in-out infinite alternate-reverse}
.bg-scene::after{content:"";position:absolute;inset:0;opacity:.05;mix-blend-mode:overlay;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E")}
@keyframes drift1{to{transform:translate(-80px,60px) scale(1.08)}}@keyframes drift2{to{transform:translate(90px,-50px) scale(1.12)}}
/* 4 · 组件 */
.toolbar{position:sticky;top:0;z-index:40;background:rgba(7,9,13,.55);backdrop-filter:var(--blur);-webkit-backdrop-filter:var(--blur);box-shadow:inset 0 -.5px 0 rgba(255,255,255,.08)}
.toolbar .wrap{display:flex;align-items:center;gap:20px;height:60px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:17px;white-space:nowrap}
.brand img{width:30px;height:30px;border-radius:8px;object-fit:contain}
.nav{display:flex;gap:2px;margin-left:8px}
.nav a{display:flex;align-items:center;gap:6px;height:34px;padding:0 11px;border-radius:var(--r-sm);font-size:var(--fs-callout);color:var(--text-2);white-space:nowrap;transition:background var(--t2),color var(--t2)}
.nav a .ico{color:var(--brand);width:18px;height:18px}
.nav a:hover{background:rgba(147,160,180,.12);color:var(--text)}
.nav a.on{background:var(--brand-soft);color:var(--brand)}
.spacer{flex:1}
.burger{display:none;width:40px;height:40px;border-radius:10px;border:0;background:rgba(26,34,48,.7);box-shadow:var(--hl);place-items:center;cursor:pointer}
.mnav{position:fixed;top:68px;left:12px;right:12px;z-index:45;padding:8px;border-radius:16px;background:var(--glass-strong);backdrop-filter:var(--blur);box-shadow:var(--hl),var(--e3);display:none;flex-direction:column;opacity:0;transform:translateY(-8px) scale(.98);transition:opacity var(--t2),transform var(--t3) var(--spring)}
.mnav.on{display:flex;opacity:1;transform:none}
.mnav a{display:flex;align-items:center;gap:12px;height:48px;padding:0 14px;border-radius:10px;font-size:16px}.mnav a .ico{color:var(--brand)}
.mnav a:hover{background:rgba(147,160,180,.12)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:38px;padding:0 16px;border-radius:var(--r-md);font-size:var(--fs-callout);font-weight:500;white-space:nowrap;border:0;cursor:pointer;
  transition:transform var(--t1) var(--bounce),background var(--t2),box-shadow var(--t2)}
.btn:active{transform:scale(.96)}
.btn.primary{background:var(--brand);color:var(--brand-ink);font-weight:600;box-shadow:inset 0 .5px 0 rgba(255,255,255,.35),0 6px 18px rgba(245,166,35,.22)}
.btn.primary:hover{background:var(--brand-2);transform:translateY(-1px)}
.btn.ghost{background:rgba(26,34,48,.7);color:var(--text);box-shadow:var(--hl)}
.btn.ghost:hover{background:rgba(34,44,61,.85)}
.btn.lg{height:46px;padding:0 22px;font-size:16px;border-radius:12px}
.btn .ico{width:18px;height:18px}
.link{display:inline-flex;align-items:center;gap:4px;color:var(--brand);font-weight:500;font-size:var(--fs-callout)}
.link .ico{width:18px;height:18px;transition:transform var(--t2) var(--spring)}.link:hover .ico{transform:translateX(3px)}
.tag{display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 10px;border-radius:7px;background:rgba(147,160,180,.12);font-size:var(--fs-foot);color:var(--text-2);white-space:nowrap}
.tag.y{background:var(--brand-soft);color:var(--brand)}.tag .ico{width:16px;height:16px}
.chip{display:inline-flex;align-items:center;height:26px;padding:0 10px;border-radius:999px;font-size:var(--fs-foot);color:var(--muted);box-shadow:inset 0 0 0 1px var(--line-2)}
.card{position:relative;overflow:hidden;background:var(--glass);backdrop-filter:var(--blur);-webkit-backdrop-filter:var(--blur);border-radius:var(--r-lg);box-shadow:var(--hl),var(--e1);
  transition:transform var(--t2) var(--spring),box-shadow var(--t2) var(--ease)}
.card::before{content:"";position:absolute;inset:0;pointer-events:none;border-radius:inherit;background:radial-gradient(420px circle at var(--mx,50%) var(--my,-30%),rgba(255,255,255,.07),transparent 40%);opacity:0;transition:opacity var(--t2)}
.card.hov:hover,a.card:hover{transform:translateY(-3px);box-shadow:var(--hl),var(--e2)}
.card.hov:hover::before,a.card:hover::before{opacity:1}
.pad{padding:24px}
.card h3{font-size:var(--fs-head);line-height:var(--lh-head);font-weight:600}
.card p{font-size:var(--fs-callout);line-height:var(--lh-callout);color:var(--text-2)}
.tile{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;background:var(--brand-soft);color:var(--brand);flex:none}
.foot{font-size:var(--fs-foot);line-height:var(--lh-foot);color:var(--muted)}
.demo{position:absolute;top:14px;right:14px;z-index:3;display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 9px;border-radius:7px;font-size:13px;color:var(--text-2);background:rgba(7,9,13,.66);box-shadow:var(--hl)}
.demo .ico{width:15px;height:15px;color:var(--brand)}
.seg{position:relative;display:inline-flex;max-width:100%;overflow-x:auto;padding:3px;border-radius:11px;background:rgba(12,16,22,.72);box-shadow:var(--hl);isolation:isolate;scrollbar-width:none}
.seg::-webkit-scrollbar{display:none}
.seg button{position:relative;border:0;background:transparent;white-space:nowrap;cursor:pointer;font-size:var(--fs-callout);color:var(--text-2);padding:6px 16px;border-radius:8px;transition:color var(--t2),transform var(--t1) var(--bounce)}
.seg button:active{transform:scale(.96)}
.seg button.on{color:var(--brand-ink);font-weight:600;background:var(--brand)}
.seg.ready button.on{background:transparent}
.seg .thumb{position:absolute;top:3px;bottom:3px;left:0;border-radius:8px;background:var(--brand);z-index:-1;box-shadow:0 2px 10px rgba(245,166,35,.3);transition:transform var(--t3) var(--spring),width var(--t3) var(--spring)}
.field{display:flex;flex-direction:column;gap:6px;font-size:var(--fs-callout);font-weight:500}
.inp{height:44px;padding:0 14px;border-radius:var(--r-md);border:0;background:rgba(7,9,13,.6);box-shadow:inset 0 0 0 1px var(--line-2);font-size:var(--fs-callout);width:100%;transition:box-shadow var(--t2)}
.inp::placeholder{color:var(--muted)}.inp:focus{outline:0;box-shadow:inset 0 0 0 1px var(--brand),0 0 0 4px rgba(245,166,35,.16)}
.kbd{display:inline-grid;place-items:center;min-width:22px;height:22px;padding:0 6px;border-radius:5px;font-size:13px;color:var(--text-2);background:rgba(147,160,180,.14)}
/* 5 · 板块 */
.sec{padding:calc(var(--sec-gap)/2) 0}
.sh{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;flex-wrap:wrap}
.sh .k{display:flex;align-items:center;gap:8px;font-size:var(--fs-foot);font-weight:600;color:var(--brand);margin-bottom:8px}
.sh .k .ico{width:18px;height:18px}
.sh h2{font-size:var(--fs-title);line-height:var(--lh-title);font-weight:650;letter-spacing:-.01em}
.sh p{color:var(--muted);margin-top:6px;max-width:640px}
.grid{display:grid;gap:16px}.g2{grid-template-columns:repeat(2,minmax(0,1fr))}.g3{grid-template-columns:repeat(3,minmax(0,1fr))}.g4{grid-template-columns:repeat(4,minmax(0,1fr))}
/* Hero */
.hero{padding:72px 0 56px}
.hero-grid{display:grid;grid-template-columns:minmax(0,.92fr) minmax(0,1.08fr);gap:48px;align-items:center}
.hero h1{font-size:var(--fs-display);line-height:var(--lh-display);font-weight:750;letter-spacing:-.02em;margin:18px 0 12px}
.hero h1 .g{background:linear-gradient(90deg,#FFBE55,#F5A623 45%,#E9EDF3);-webkit-background-clip:text;background-clip:text;color:transparent}
.slogan{font-size:20px;line-height:30px;color:var(--text);font-weight:500}.slogan em{font-style:normal;color:var(--brand)}
.lead{font-size:17px;line-height:28px;color:var(--text-2);margin-top:10px;max-width:560px}
.cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}
.facts{display:flex;gap:8px;flex-wrap:wrap;margin-top:22px}
.invite{display:flex;gap:8px;align-items:center;margin-top:22px;padding:8px;border-radius:14px;background:rgba(12,16,22,.6);box-shadow:var(--hl);max-width:520px}
.invite .lb{display:flex;align-items:center;gap:8px;padding:0 6px 0 8px;font-size:var(--fs-callout);color:var(--text-2);white-space:nowrap}.invite .lb .ico{color:var(--brand)}
.invite .inp{height:38px;flex:1;min-width:0;text-transform:uppercase}
.invite .msg{flex-basis:100%}
/* 6 · 动态示意 */
.viz svg:not(.ico){width:100%;height:auto;display:block}
/* Hero 闭环环形 */
.loop{padding:24px}
.loop-stage{position:relative;aspect-ratio:1.18/1}
.loop-ring{position:absolute;inset:0}
.loop-ring .trk{fill:none;stroke:rgba(147,160,180,.14);stroke-width:2}
.loop-ring .arc{fill:none;stroke:url(#lg);stroke-width:3;stroke-linecap:round;stroke-dasharray:18 82;filter:drop-shadow(0 0 6px rgba(245,166,35,.55))}
.play .loop-ring .arc{animation:arcRun 9s linear infinite}
@keyframes arcRun{from{stroke-dashoffset:0}to{stroke-dashoffset:-100}}
.ln{position:absolute;transform:translate(-50%,-50%);display:flex;flex-direction:column;align-items:center;gap:6px;width:118px;text-align:center}
.ln .tile{width:52px;height:52px;border-radius:15px;background:rgba(18,24,34,.92);box-shadow:var(--hl),0 0 0 1px var(--line);transition:box-shadow .4s,transform .4s var(--spring)}
.ln b{font-size:16px;line-height:22px}.ln span{font-size:13px;line-height:18px;color:var(--muted)}
.ln.on .tile{box-shadow:var(--hl),0 0 0 2px var(--brand),0 0 26px rgba(245,166,35,.45);transform:scale(1.08)}
.ln.on span{color:var(--brand-2)}
.loop-core{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:46%;text-align:center}
.loop-core .lbl{font-size:13px;color:var(--muted)}
.loop-core .out{font-size:22px;line-height:30px;font-weight:650;margin:6px 0;min-height:30px;transition:opacity .3s}
.loop-core .sub{font-size:13px;color:var(--text-2)}
.loop-chips{display:flex;gap:8px;flex-wrap:wrap;justify-content:center;margin-top:14px}
/* 画布节点图 */
.cv-edge{stroke:var(--line-2);stroke-width:2;fill:none}
.cv-lit{stroke:var(--brand);stroke-width:2.5;fill:none;stroke-dasharray:var(--len);stroke-dashoffset:var(--len);filter:drop-shadow(0 0 6px rgba(245,166,35,.6))}
.play .cv-lit{animation:litEdge 7.2s var(--ease) infinite;animation-delay:calc(var(--i)*1s)}
@keyframes litEdge{0%{stroke-dashoffset:var(--len)}12%,70%{stroke-dashoffset:0;opacity:1}85%,100%{stroke-dashoffset:0;opacity:0}}
.cv-node rect{fill:rgba(26,34,48,.95);stroke:var(--line-2);stroke-width:1}
.cv-node text{fill:#E9EDF3;font-size:21px;font-weight:600;font-family:var(--font)}.cv-node .s{fill:#93A0B4;font-size:19.5px;font-weight:400}
.cv-node .d{fill:var(--brand)}
.play .cv-node rect{animation:nodeOn 7.2s infinite;animation-delay:calc(var(--i)*1s)}
@keyframes nodeOn{0%,8%{stroke:#2E3A4D}14%,72%{stroke:#F5A623}86%,100%{stroke:#2E3A4D}}
.cursor{position:absolute;display:flex;align-items:center;gap:4px;font-size:13px;pointer-events:none}
.cursor span{padding:1px 7px;border-radius:6px;color:#07090D;background:var(--blue)}
.cursor.y span{background:var(--brand);color:var(--brand-ink)}
.play .cursor{animation:cur 8s var(--ease) infinite}.play .cursor.y{animation-delay:-4s}
@keyframes cur{0%{transform:translate(0,0)}25%{transform:translate(120px,-30px)}50%{transform:translate(60px,40px)}75%{transform:translate(-40px,10px)}100%{transform:translate(0,0)}}
/* 工作区 */
.ws{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);gap:16px}
.win-bar{display:flex;align-items:center;gap:8px;height:42px;padding:0 14px;font-size:13px;color:var(--muted);background:rgba(12,16,22,.6);box-shadow:inset 0 -.5px 0 rgba(255,255,255,.06)}
.lights{display:flex;gap:8px;margin-right:6px}.lights i{width:12px;height:12px;border-radius:50%}.lights i:nth-child(1){background:#FF5F57}.lights i:nth-child(2){background:#FEBC2E}.lights i:nth-child(3){background:#28C840}
.win-bar .t{flex:1;text-align:center;margin-right:60px}
.ws-canvas{position:relative;padding:28px 20px 16px;background:radial-gradient(circle,rgba(147,160,180,.16) 1px,transparent 1px) 0 0/20px 20px;overflow:hidden}
.ws-tools{display:flex;gap:8px;flex-wrap:wrap;padding:14px 16px;box-shadow:inset 0 .5px 0 rgba(255,255,255,.06)}
.ws-tools .btn{height:34px;font-size:15px}
.preview-frame{width:100%;height:440px;border:0;display:block;background:#0C1016}
.next{display:flex;flex-direction:column;gap:10px}
.next a{display:flex;align-items:center;gap:14px;padding:14px 16px;border-radius:12px;background:rgba(12,16,22,.55);box-shadow:var(--hl);transition:transform var(--t2) var(--spring),background var(--t2)}
.next a:hover{transform:translateX(4px);background:rgba(26,34,48,.8)}
.next .n{width:34px;height:34px;border-radius:10px;display:grid;place-items:center;background:var(--brand-soft);color:var(--brand);font-weight:700;font-size:15px;flex:none}
.next b{display:block;font-size:16px;line-height:22px}.next span{font-size:13px;color:var(--muted)}
.next .ico.go{margin-left:auto;color:var(--muted)}
/* 角色卡 */
.panes{position:relative}.pane{display:none}.pane.on{display:block;animation:paneIn var(--t3) var(--spring)}
@keyframes paneIn{from{opacity:0;transform:translateY(8px) scale(.99)}to{opacity:1;transform:none}}
.role-desc{color:var(--text-2);margin-bottom:18px;max-width:760px}
.rc{display:flex;flex-direction:column;gap:10px;padding:24px;min-height:228px}
.rc .no{font-size:13px;color:var(--brand);font-weight:600}
.rc .steps{display:flex;align-items:center;gap:6px;margin-top:auto;font-size:13px;color:var(--muted);flex-wrap:wrap}
.rc .steps i{width:6px;height:6px;border-radius:50%;background:var(--line-2)}
.play .rc .steps i{animation:dotOn 3s infinite}.play .rc .steps i:nth-of-type(2){animation-delay:1s}.play .rc .steps i:nth-of-type(3){animation-delay:2s}
@keyframes dotOn{0%,10%{background:var(--line-2)}20%,40%{background:var(--brand);box-shadow:0 0 10px var(--brand)}60%,100%{background:var(--line-2)}}
.rc .foot2{display:flex;align-items:center;justify-content:space-between;gap:8px}
/* 核心优势 */
.adv{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.adv .wide{grid-column:1/-1}
.adv .card{padding:28px}
.adv .hd{display:flex;align-items:center;gap:14px;margin-bottom:10px}
.adv .no{font-size:13px;color:var(--brand);font-weight:600}
.adv p.d{margin-bottom:20px}
/* 流水线 */
.pipe{position:relative}
.pipe-track{position:absolute;left:8.33%;right:8.33%;top:27px;height:2px;background:linear-gradient(90deg,rgba(245,166,35,.15),rgba(245,166,35,.45),rgba(245,166,35,.15))}
.pipe-dot{position:absolute;top:-5px;left:0;width:12px;height:12px;border-radius:50%;background:#FFBE55;box-shadow:0 0 0 4px rgba(245,166,35,.18),0 0 18px 4px rgba(245,166,35,.55)}
.play .pipe-dot{animation:pipeRun 6s linear infinite}.play .pipe-dot.b{animation-delay:-3s}
@keyframes pipeRun{from{left:0}to{left:100%}}
.pipe-st{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:10px;position:relative}
.ps{display:flex;flex-direction:column;align-items:center;text-align:center;gap:4px}
.ps .tile{width:54px;height:54px;border-radius:15px;background:rgba(18,24,34,.95);box-shadow:var(--hl),0 0 0 1px var(--line);margin-bottom:6px}
.play .ps .tile{animation:psPulse 6s infinite;animation-delay:calc(var(--i)*1s)}
@keyframes psPulse{0%,4%{box-shadow:var(--hl),0 0 0 1px #232C3B}8%{box-shadow:var(--hl),0 0 0 2px #F5A623,0 0 24px rgba(245,166,35,.45)}20%,100%{box-shadow:var(--hl),0 0 0 1px #232C3B}}
.ps b{font-size:16px}.ps span{font-size:13px;color:var(--muted)}
/* 课堂即产线：步骤 */
.class-flow{display:flex;flex-direction:column;gap:10px}
.cf{display:flex;align-items:center;gap:12px;padding:12px 14px;border-radius:12px;background:rgba(12,16,22,.55);box-shadow:var(--hl);opacity:.5}
.cf .ico{color:var(--brand)} .cf b{font-size:15px}.cf span{font-size:13px;color:var(--muted);margin-left:auto}
.play .cf{animation:cfOn 6.4s infinite;animation-delay:calc(var(--i)*1.6s)}
@keyframes cfOn{0%,4%{opacity:.5}10%,30%{opacity:1;box-shadow:var(--hl),0 0 0 1px rgba(245,166,35,.6)}45%,100%{opacity:.5}}
/* 资产环 */
.orbit{position:relative;aspect-ratio:1/1;max-width:300px;margin:0 auto}
.orbit svg{position:absolute;inset:0}
.orbit .on-ring{fill:none;stroke:rgba(147,160,180,.16);stroke-width:1.5;stroke-dasharray:4 6}
.orbit .sp{transform-origin:150px 150px}
.play .orbit .sp{animation:spin 12s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.on-node{position:absolute;transform:translate(-50%,-50%);display:flex;flex-direction:column;align-items:center;gap:2px;font-size:13px;color:var(--text-2)}
.on-node i{width:12px;height:12px;border-radius:50%;background:var(--ink-3);box-shadow:0 0 0 1px var(--line-2)}
.play .on-node i{animation:onPulse 6s infinite;animation-delay:calc(var(--i)*1s)}
@keyframes onPulse{0%,4%{background:var(--ink-3)}9%,22%{background:var(--brand);box-shadow:0 0 14px var(--brand)}35%,100%{background:var(--ink-3)}}
.orbit .center{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);text-align:center}
.orbit .center b{display:block;font-size:20px}.orbit .center span{font-size:13px;color:var(--muted)}
.split-bar{display:flex;height:12px;border-radius:999px;overflow:hidden;background:rgba(147,160,180,.12);margin:16px 0 8px}
.split-bar i{display:block;height:100%;width:0;transition:width 1.4s var(--spring)}
.split-bar .a{background:linear-gradient(90deg,#B87710,#F5A623)}.split-bar .p{background:var(--blue);transition-delay:.25s}
.play .split-bar .a{width:80%}.play .split-bar .p{width:20%}
.legend{display:flex;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--text-2)}.legend i{display:inline-block;width:10px;height:10px;border-radius:3px;margin-right:6px;vertical-align:-1px}
/* 部署示意 */
.deploy{display:grid;grid-template-columns:minmax(0,1.2fr) 120px minmax(0,1fr);align-items:stretch;gap:0}
.dep-box{padding:18px;border-radius:14px;background:rgba(12,16,22,.6);box-shadow:var(--hl)}
.dep-box h4{display:flex;align-items:center;gap:8px;font-size:15px;margin-bottom:12px}.dep-box h4 .ico{color:var(--brand)}
.layer{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:10px;background:rgba(26,34,48,.7);margin-top:8px;font-size:15px}
.layer span{margin-left:auto;font-size:13px;color:var(--muted)}
.layer .ico{color:var(--brand)}
.pipe-x{position:relative;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:8px;font-size:13px;color:var(--muted);text-align:center;padding:0 8px}
.pipe-x .wire{position:relative;width:100%;height:2px;background:repeating-linear-gradient(90deg,var(--faint) 0 6px,transparent 6px 12px)}
.pipe-x .wire i{position:absolute;top:-4px;left:0;width:10px;height:10px;border-radius:50%;background:var(--blue);box-shadow:0 0 10px var(--blue)}
.play .pipe-x .wire i{animation:wire 2.6s linear infinite}.play .pipe-x .wire i:nth-child(2){animation-delay:-1.3s}
@keyframes wire{from{left:0}to{left:calc(100% - 10px)}}
.route{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin-top:16px}
.route div{padding:14px;border-radius:12px;background:rgba(12,16,22,.55);box-shadow:var(--hl)}
.route b{display:block;font-size:15px}.route span{font-size:13px;color:var(--muted)}
.bars{display:flex;flex-direction:column;gap:14px}
.bar{display:grid;grid-template-columns:140px minmax(0,1fr) 92px;gap:12px;align-items:center;font-size:15px}
.bar .tr{height:12px;border-radius:999px;background:rgba(147,160,180,.12);overflow:hidden}
.bar .fl{height:100%;width:0;border-radius:inherit;background:linear-gradient(90deg,#B87710,#F5A623 60%,#FFBE55);transition:width 1.4s var(--spring)}
.play .bar .fl{width:var(--w)}
.bar .v{text-align:right;font-weight:600;font-variant-numeric:tabular-nums}.bar .v small{font-size:13px;color:var(--muted);font-weight:400}
/* 能力路径 */
.path{position:relative}
.path-line{position:absolute;left:10%;right:10%;top:34px;height:3px;border-radius:3px;background:rgba(147,160,180,.14);overflow:hidden}
.path-line i{display:block;height:100%;width:var(--p,0%);background:linear-gradient(90deg,#B87710,#F5A623,#FFBE55);box-shadow:0 0 12px rgba(245,166,35,.6);transition:width .25s linear}
.path-st{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:14px;position:relative}
.pst{display:flex;flex-direction:column;align-items:center;text-align:center;gap:6px;padding:0 0 20px}
.pst .tile{width:68px;height:68px;border-radius:20px;background:rgba(18,24,34,.95);box-shadow:var(--hl),0 0 0 1px var(--line);transition:box-shadow .4s,transform .4s var(--spring)}
.pst.on .tile{box-shadow:var(--hl),0 0 0 2px var(--brand),0 0 22px rgba(245,166,35,.4)}
.pst .no{font-size:13px;color:var(--brand);font-weight:600;margin-top:6px}
.pst b{font-size:var(--fs-head);line-height:var(--lh-head)}.pst span{font-size:13px;color:var(--muted)}
.pst:hover .tile{transform:translateY(-4px)}
/* 案例 */
.filters{display:flex;gap:8px;overflow-x:auto;padding:2px 2px 10px;scrollbar-width:none}
.filters::-webkit-scrollbar{display:none}
.fchip{flex:none;display:inline-flex;align-items:center;gap:6px;height:36px;padding:0 14px;border-radius:999px;border:0;background:rgba(18,24,34,.6);box-shadow:var(--hl);color:var(--text-2);font-size:var(--fs-callout);cursor:pointer;transition:background var(--t2),color var(--t2),transform var(--t1) var(--bounce)}
.fchip .n{font-size:13px;color:var(--muted)}.fchip:active{transform:scale(.96)}
.fchip.on{background:rgba(245,166,35,.16);box-shadow:inset 0 0 0 1px var(--brand);color:var(--brand)}.fchip.on .n{color:var(--brand)}
.sc-tools{display:flex;gap:12px;align-items:center;justify-content:space-between;flex-wrap:wrap;margin-bottom:14px}
.search{display:flex;align-items:center;gap:8px;height:38px;padding:0 12px;border-radius:var(--r-md);background:rgba(12,16,22,.6);box-shadow:var(--hl);width:280px;max-width:100%}
.search .ico{color:var(--brand)}.search input{flex:1;min-width:0;border:0;background:transparent;outline:0;font-size:15px}.search input::placeholder{color:var(--muted)}
.case{display:flex;flex-direction:column}
.case .cv{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--ink-2)}
.case .cv img{width:100%;height:100%;object-fit:cover;transition:transform .8s var(--spring)}
.case:hover .cv img{transform:scale(1.05)}
.case .cv .tag{position:absolute;left:12px;bottom:12px;background:rgba(7,9,13,.72);color:var(--text)}
.case .bd{padding:18px 20px 20px;display:flex;flex-direction:column;gap:8px;flex:1}
.case .bd .link{margin-top:auto}
.case.hide{display:none}.case.pop{animation:paneIn var(--t3) var(--spring)}
.empty{display:none;padding:32px;text-align:center;color:var(--muted)}
/* 身份 */
.who{display:flex;flex-direction:column;gap:12px;padding:26px}
.who .chips{display:flex;gap:6px;flex-wrap:wrap}
.who .btn{margin-top:auto;align-self:flex-start}
.who .glow{position:absolute;right:-60px;top:-60px;width:180px;height:180px;border-radius:50%;background:var(--c);opacity:.14;filter:blur(30px)}
.play .who .glow{animation:breathe 5s ease-in-out infinite}
@keyframes breathe{50%{transform:scale(1.25);opacity:.22}}
/* 模块 */
.mod{display:flex;align-items:center;gap:16px;padding:20px}
.mod b{display:block;font-size:var(--fs-head);line-height:var(--lh-head)}.mod span{font-size:var(--fs-callout);color:var(--text-2)}
.mod .go{margin-left:auto;color:var(--muted);transition:transform var(--t2) var(--spring),color var(--t2)}
.mod:hover .go{transform:translateX(4px);color:var(--brand)}
/* 教师端 */
.teacher{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:16px}
.cycle{display:flex;align-items:center;gap:6px;flex-wrap:wrap;margin:18px 0 22px}
.cycle .c{display:flex;align-items:center;gap:8px;height:40px;padding:0 14px;border-radius:999px;background:rgba(12,16,22,.6);box-shadow:var(--hl);font-size:15px}
.cycle .c .ico{color:var(--brand);width:18px;height:18px}
.play .cycle .c{animation:cfOn 6.4s infinite;animation-delay:calc(var(--i)*1.6s)}
.cycle .ar{color:var(--muted)}
.dl{display:flex;flex-direction:column;gap:10px}
.dl a{display:flex;align-items:center;gap:14px;padding:16px;border-radius:14px;background:rgba(12,16,22,.55);box-shadow:var(--hl);transition:transform var(--t2) var(--spring),background var(--t2)}
.dl a:hover{transform:translateY(-2px);background:rgba(26,34,48,.85)}
.dl b{display:block;font-size:16px}.dl span{font-size:13px;color:var(--muted)}.dl .ico.go{margin-left:auto;color:var(--brand)}
.dash{padding:0}
.dash .bd{padding:20px}
.dash-tabs{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:16px}
.spark{display:flex;align-items:flex-end;gap:10px;height:150px;padding:14px;border-radius:12px;background:rgba(12,16,22,.55);box-shadow:var(--hl)}
.spark i{flex:1;border-radius:6px 6px 2px 2px;background:linear-gradient(180deg,#FFBE55,#B87710);height:8%;transition:height 1.2s var(--spring)}
.play .spark i{height:var(--h)}
.spark i:nth-child(2){transition-delay:.08s}.spark i:nth-child(3){transition-delay:.16s}.spark i:nth-child(4){transition-delay:.24s}.spark i:nth-child(5){transition-delay:.32s}.spark i:nth-child(6){transition-delay:.4s}
.task{display:flex;align-items:center;gap:10px;padding:12px 14px;border-radius:10px;background:rgba(12,16,22,.55);box-shadow:var(--hl);margin-top:10px;font-size:15px}
.task .ico{color:var(--brand)}.task span{margin-left:auto}
/* 客户墙 */
.wall{overflow:hidden;-webkit-mask-image:linear-gradient(90deg,transparent,#000 6%,#000 94%,transparent);mask-image:linear-gradient(90deg,transparent,#000 6%,#000 94%,transparent)}
.wall .row{display:flex;gap:12px;width:max-content;padding:6px 0}
.play .wall .row{animation:mq 60s linear infinite}.play .wall .row.r2{animation-direction:reverse;animation-duration:70s}
.wall:hover .row{animation-play-state:paused}
@keyframes mq{to{transform:translateX(-50%)}}
.logo-c{width:120px;display:flex;flex-direction:column;align-items:center;gap:6px}
.logo-c .seat{width:100%;aspect-ratio:1.4/1;display:grid;place-items:center;border-radius:12px;background:rgba(255,255,255,.94);box-shadow:var(--e1);overflow:hidden}
.logo-c img{width:84%;height:84%;object-fit:contain}
.logo-c span{font-size:13px;color:var(--muted);white-space:nowrap;max-width:100%;overflow:hidden;text-overflow:ellipsis}
/* 申请 */
.apply{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:24px;align-items:start}
.astep{display:flex;flex-direction:column;gap:12px;margin:20px 0}
.astep div{display:flex;align-items:center;gap:14px;font-size:17px}
.astep b{width:36px;height:36px;border-radius:50%;display:grid;place-items:center;background:var(--brand-soft);color:var(--brand);font-size:15px;flex:none}
.play .astep b{animation:stepPing 4.5s infinite;animation-delay:calc(var(--i)*1.5s)}
@keyframes stepPing{0%,5%{box-shadow:0 0 0 0 rgba(245,166,35,.5)}20%{box-shadow:0 0 0 10px rgba(245,166,35,0)}35%,100%{box-shadow:0 0 0 0 rgba(245,166,35,0)}}
.form{display:flex;flex-direction:column;gap:14px;padding:26px}
/* 页脚 */
footer{padding:96px 0 40px}
footer .cols{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px}
footer h4{font-size:var(--fs-callout);font-weight:600;margin-bottom:12px}
footer ul{list-style:none}footer li{font-size:var(--fs-callout);line-height:32px;color:var(--text-2)}
footer li a:hover{color:var(--brand)}
footer .legal{margin-top:36px;display:flex;flex-wrap:wrap;gap:8px 18px;align-items:center}
footer .legal a:hover{color:var(--brand)}
.ver{border:0;background:rgba(147,160,180,.12);border-radius:7px;height:26px;padding:0 10px;font-size:13px;color:var(--text-2);cursor:pointer}
/* 7 · 浮层 */
.tip{position:fixed;z-index:90;pointer-events:none;max-width:300px;padding:7px 11px;border-radius:9px;font-size:13px;line-height:18px;color:var(--text);background:var(--glass-strong);backdrop-filter:var(--blur);box-shadow:var(--hl),var(--e2);opacity:0;transform:translateY(4px) scale(.98);transition:opacity var(--t1),transform var(--t2) var(--spring)}
.tip.on{opacity:1;transform:none}
.sheet-wrap{position:fixed;inset:0;z-index:95;display:flex;align-items:center;justify-content:center;padding:16px;background:rgba(3,5,8,.5);backdrop-filter:blur(8px);opacity:0;pointer-events:none;transition:opacity var(--t2)}
.sheet-wrap.on{opacity:1;pointer-events:auto}
.sheet{position:relative;width:min(760px,100%);max-height:88vh;overflow:auto;border-radius:20px;padding:28px;background:var(--glass-strong);backdrop-filter:var(--blur);box-shadow:var(--hl),var(--e3);transform:translateY(40px) scale(.97);transition:transform var(--t4) var(--spring)}
.sheet-wrap.on .sheet{transform:none}
.sheet h3{font-size:var(--fs-title);line-height:var(--lh-title);margin-bottom:8px}
.sheet .x{position:absolute;top:16px;right:16px;width:34px;height:34px;border-radius:50%;border:0;display:grid;place-items:center;background:rgba(147,160,180,.14);cursor:pointer}
.domains{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:10px;margin:22px 0 12px;position:relative}
.dm{display:flex;flex-direction:column;align-items:center;gap:6px;padding:14px 8px;border-radius:12px;background:rgba(18,24,34,.8);box-shadow:var(--hl);text-align:center}
.dm .ico{color:var(--brand)}.dm b{font-size:15px}.dm span{font-size:13px;color:var(--muted)}
.sheet-wrap.on .dm{animation:cfOn 5s infinite;animation-delay:calc(var(--i)*1s)}
.rail{padding:12px 14px;border-radius:12px;background:var(--brand-soft);color:var(--brand-2);font-size:15px;text-align:center}
.vlist{list-style:none;display:flex;flex-direction:column;gap:10px;margin-top:12px}
.vlist li{padding:12px 14px;border-radius:10px;background:rgba(12,16,22,.6);box-shadow:var(--hl);font-size:15px;color:var(--text-2)}
.toast{position:fixed;left:50%;bottom:28px;z-index:99;transform:translate(-50%,20px);opacity:0;padding:10px 16px;border-radius:12px;background:var(--glass-strong);backdrop-filter:var(--blur);box-shadow:var(--hl),var(--e2);font-size:15px;transition:opacity var(--t2),transform var(--t3) var(--spring);pointer-events:none}
.toast.on{opacity:1;transform:translate(-50%,0)}
/* 入场 */
.rv{opacity:0;transform:translateY(24px);transition:opacity .8s var(--ease),transform .8s var(--spring)}
.rv.in{opacity:1;transform:none}.d1{transition-delay:.08s}.d2{transition-delay:.16s}.d3{transition-delay:.24s}
/* 8 · 响应式：1024 / 900 / 560 */
@media (max-width:1180px){.nav a .ico{display:none}.nav a{padding:0 9px}}
@media (max-width:1080px){
  :root{--fs-display:40px;--lh-display:50px;--sec-gap:96px}
  .nav{display:none}.burger{display:grid}
  .hero-grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:32px}
  .g4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .deploy{grid-template-columns:minmax(0,1fr) 90px minmax(0,1fr)}
  .ln{width:96px}
}
@media (max-width:900px){
  :root{--fs-display:36px;--lh-display:46px;--fs-title:26px;--lh-title:34px;--sec-gap:80px}
  .hero{padding:44px 0 32px}
  .hero-grid,.ws,.teacher,.apply,.adv{grid-template-columns:minmax(0,1fr)}
  .g3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .pipe-st{grid-template-columns:repeat(3,minmax(0,1fr));row-gap:20px}.pipe-track{display:none}
  .path-st{grid-template-columns:repeat(3,minmax(0,1fr));row-gap:12px}.path-line{display:none}
  footer .cols{grid-template-columns:1fr 1fr}
  .domains{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media (max-width:560px){
  :root{--gutter:18px;--fs-display:32px;--lh-display:40px;--sec-gap:64px}
  .toolbar .wrap{gap:10px}.toolbar .btn.ghost{display:none}.toolbar .btn.primary{padding:0 12px}
  .g2,.g3,.g4,.route{grid-template-columns:minmax(0,1fr)}
  .pipe-st,.path-st{grid-template-columns:repeat(2,minmax(0,1fr))}
  .deploy{grid-template-columns:minmax(0,1fr)}.pipe-x{padding:14px 0}.pipe-x .wire{width:60%}
  .bar{grid-template-columns:minmax(0,1fr) 84px}.bar .tr{grid-column:1/-1;grid-row:2}
  .invite{flex-wrap:wrap}.invite .lb{flex-basis:100%;padding:4px 6px}
  .loop{padding:14px}.ln{width:76px}.ln .tile{width:42px;height:42px;border-radius:12px}.ln span{display:none}.ln b{font-size:14px}
  .loop-core .out{font-size:18px;line-height:24px}
  .sh{align-items:flex-start}.search{width:100%}
  .domains{grid-template-columns:repeat(2,minmax(0,1fr))}
  .logo-c{width:96px}
  .cycle .ar{display:none}
  .ws-canvas{overflow-x:auto}.ws-canvas svg:not(.ico){min-width:600px}
  footer .cols{grid-template-columns:1fr}
}
/* 9 · 降级：减少动态效果 */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
  .rv{opacity:1;transform:none}.bg-scene i{animation:none}
  .cv-lit{animation:none!important;stroke-dashoffset:0}.wall .row{animation:none!important;flex-wrap:wrap;width:auto}
  .play .bar .fl{width:var(--w)}
}