/* ============================================================
   Lin渊Claw — Liquid Glass / Tech-Motion Design System
   全站液态玻璃 + 动态 3D + PPT 式转场
   ============================================================ */

:root{
  --bg:#04060d;
  --bg2:#080b16;
  --ink:#eaf2ff;
  --ink-dim:rgba(214,228,255,.72);
  --ink-faint:rgba(190,210,245,.45);
  --cyan:#4de8ff;
  --cyan-soft:#7fb7ff;
  --violet:#8b5cf6;
  --amber:#ffb454;
  --green:#34e39a;
  --glass:rgba(255,255,255,.045);
  --glass-2:rgba(255,255,255,.075);
  --glass-bd:rgba(255,255,255,.12);
  --glass-hi:rgba(255,255,255,.22);
  --r-lg:26px;
  --r-md:18px;
  --font:"Segoe UI","PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --mono:"Cascadia Code","JetBrains Mono",ui-monospace,Consolas,monospace;
  --ease-out:cubic-bezier(.22,1,.36,1);
  --ease-spring:cubic-bezier(.34,1.56,.64,1);
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:96px;overflow-x:hidden}
body{
  font-family:var(--font);
  background:var(--bg);
  color:var(--ink);
  line-height:1.75;
  /* 注意：body 禁用 overflow-x:hidden（会变滚动容器致 sticky 目录失效，已踩坑）；
     用 overflow-x:clip 替代：只裁剪不产生滚动容器，sticky 不受影响 */
  overflow-x:clip;
  -webkit-font-smoothing:antialiased;
}
::selection{background:rgba(77,232,255,.28);color:#fff}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}

/* 滚动条 */
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:var(--bg)}
::-webkit-scrollbar-thumb{background:linear-gradient(180deg,rgba(77,232,255,.35),rgba(139,92,246,.35));border-radius:8px;border:2px solid var(--bg)}

/* ============ 背景层：极光 + 网格 + 粒子 ============ */
#particles{position:fixed;inset:0;z-index:0;pointer-events:none}
.bg-aurora{position:fixed;inset:-20%;z-index:-2;pointer-events:none;
  animation:hueDrift 22s linear infinite}
@keyframes hueDrift{0%{filter:blur(90px) saturate(150%) hue-rotate(0deg)}50%{filter:blur(90px) saturate(170%) hue-rotate(38deg)}100%{filter:blur(90px) saturate(150%) hue-rotate(0deg)}}
.bg-aurora::before,.bg-aurora::after,.bg-aurora i{
  content:"";position:absolute;border-radius:50%;opacity:.8;
  animation:blob 20s var(--ease-out) infinite alternate;
}
.bg-aurora::before{width:52vw;height:52vw;left:-8%;top:-12%;background:radial-gradient(circle,rgba(40,130,235,.6),transparent 65%)}
.bg-aurora::after{width:46vw;height:46vw;right:-10%;top:22%;background:radial-gradient(circle,rgba(150,95,255,.55),transparent 65%);animation-delay:-7s}
.bg-aurora i{display:block;width:40vw;height:40vw;left:28%;bottom:-18%;background:radial-gradient(circle,rgba(30,205,235,.45),transparent 65%);animation-delay:-13s}
.bg-aurora i.b2{width:34vw;height:34vw;left:55%;top:-6%;background:radial-gradient(circle,rgba(255,80,190,.3),transparent 65%);animation-delay:-17s}
@keyframes blob{
  0%{transform:translate(0,0) scale(1)}
  50%{transform:translate(6vw,-4vh) scale(1.18) rotate(20deg)}
  100%{transform:translate(-5vw,5vh) scale(.92) rotate(-14deg)}
}
.bg-grid{
  position:fixed;inset:0;z-index:-1;pointer-events:none;
  background:
    linear-gradient(rgba(120,170,255,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(120,170,255,.05) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(ellipse 90% 70% at 50% 30%,#000 40%,transparent 100%);
  -webkit-mask-image:radial-gradient(ellipse 90% 70% at 50% 30%,#000 40%,transparent 100%);
  animation:gridDrift 34s linear infinite,gridPulse 6s ease-in-out infinite;
}
@keyframes gridDrift{to{background-position:56px 56px}}
@keyframes gridPulse{50%{opacity:.55}}

/* 漂浮液态玻璃光球（JS 注入） */
.orb{position:fixed;z-index:1;pointer-events:none;border-radius:50%;
  background:radial-gradient(circle at 32% 30%,rgba(255,255,255,.22),rgba(120,200,255,.08) 45%,rgba(120,160,255,.02) 70%);
  border:1px solid rgba(160,210,255,.16);
  -webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
  box-shadow:inset 0 1px 8px rgba(255,255,255,.18),0 0 40px rgba(90,180,255,.08);
  animation:orbDrift var(--od,26s) ease-in-out infinite alternate}
@keyframes orbDrift{
  0%{transform:translate(0,0) scale(1)}
  50%{transform:translate(var(--ox,40px),var(--oy,-70px)) scale(1.12)}
  100%{transform:translate(calc(var(--ox,40px)*-.6),calc(var(--oy,-70px)*.5)) scale(.94)}}

/* 鼠标光晕跟随 */
.cursor-glow{position:fixed;left:0;top:0;width:520px;height:520px;z-index:1;pointer-events:none;
  transform:translate(-50%,-50%);mix-blend-mode:screen;
  background:radial-gradient(circle,rgba(77,232,255,.10),rgba(139,92,246,.05) 40%,transparent 68%)}

/* 大字视差水印 */
.wm{
  position:absolute;left:50%;white-space:nowrap;z-index:0;pointer-events:none;
  font-weight:900;font-size:clamp(90px,17vw,300px);letter-spacing:.06em;
  color:transparent;-webkit-text-stroke:1px rgba(150,190,255,.16);
  transform:translateX(-50%);
  animation:wmPulse 7s ease-in-out infinite;
}
@keyframes wmPulse{50%{-webkit-text-stroke-color:rgba(160,205,255,.26)}}

/* ============ 顶部滚动进度条 ============ */
.pbar{position:fixed;top:0;left:0;height:3px;width:0;z-index:200;
  background:linear-gradient(90deg,var(--cyan),var(--violet),var(--amber));
  box-shadow:0 0 12px rgba(77,232,255,.8);border-radius:0 4px 4px 0}

/* ============ PPT 页面转场遮罩 ============ */
.pt{position:fixed;inset:0;z-index:400;pointer-events:none;display:flex}
.pt i{flex:1;background:linear-gradient(180deg,#0a1224,#060a16);transform:scaleY(1);transform-origin:top}
.pt.leave i{transform-origin:bottom}
.pt.play i{animation:ptOut .82s var(--ease-out) forwards}
.pt.play.leave i{animation:ptIn .6s var(--ease-out) forwards}
.pt i:nth-child(2){animation-delay:.06s}.pt i:nth-child(3){animation-delay:.12s}
.pt i:nth-child(4){animation-delay:.18s}.pt i:nth-child(5){animation-delay:.24s}
@keyframes ptOut{to{transform:scaleY(0)}}
@keyframes ptIn{from{transform:scaleY(0)}to{transform:scaleY(1)}}

/* ============ 布局 ============ */
.wrap{max-width:1200px;margin:0 auto;padding:0 28px;position:relative;z-index:2}
section{position:relative;padding:110px 0}
main{position:relative;z-index:2}

/* 分割光线 */
.divider{height:1px;max-width:1100px;margin:0 auto;position:relative;overflow:visible;
  background:linear-gradient(90deg,transparent,rgba(120,180,255,.22),transparent)}
.divider::after{content:"";position:absolute;top:-2px;left:0;width:70px;height:5px;border-radius:5px;
  background:linear-gradient(90deg,transparent,var(--cyan),transparent);
  filter:blur(1px);animation:dividerRun 5s linear infinite}
@keyframes dividerRun{0%{left:0;opacity:0}12%{opacity:1}88%{opacity:1}100%{left:calc(100% - 70px);opacity:0}}

/* ============ 玻璃基元 ============ */
.glass,.card,.step,.safety-item,.theme-card,.fcard,.doc-body,.doc-toc,.feat-rail,.cta-box,.term,.stat,.chip,.cw-panel{
  background:linear-gradient(160deg,var(--glass-2),var(--glass) 42%,rgba(255,255,255,.02));
  -webkit-backdrop-filter:blur(22px) saturate(150%);
  backdrop-filter:blur(22px) saturate(150%);
  border:1px solid var(--glass-bd);
  border-radius:var(--r-lg);
  position:relative;
}
/* 玻璃顶部高光棱线 */
.card::before,.fcard::before,.step::before,.theme-card::before,.cta-box::before,.term::before,.stat::before{
  content:"";position:absolute;inset:0 0 auto 0;height:1px;border-radius:inherit;
  background:linear-gradient(90deg,transparent 4%,var(--glass-hi) 30%,rgba(77,232,255,.35) 50%,var(--glass-hi) 70%,transparent 96%);
  pointer-events:none;
}
/* 液态高光扫过 */
.sheen{position:relative;overflow:hidden}
.sheen::after{content:"";position:absolute;top:-60%;bottom:-60%;left:-30%;width:34%;
  background:linear-gradient(105deg,transparent,rgba(255,255,255,.10) 45%,rgba(255,255,255,.18) 50%,rgba(255,255,255,.10) 55%,transparent);
  transform:skewX(-18deg) translateX(-140%);pointer-events:none;
  animation:sheenMove 7.5s ease-in-out infinite}
@keyframes sheenMove{0%,55%{transform:skewX(-18deg) translateX(-160%)}85%,100%{transform:skewX(-18deg) translateX(680%)}}

/* 鼠标跟随聚光（JS 写入 --mx/--my） */
.spotlight::after{content:"";position:absolute;inset:-1px;border-radius:inherit;pointer-events:none;opacity:0;
  background:radial-gradient(280px circle at var(--mx,50%) var(--my,50%),rgba(77,232,255,.13),transparent 65%);
  transition:opacity .4s}
.spotlight:hover::after{opacity:1}

/* ============ 导航（悬浮玻璃胶囊） ============ */
.nav{position:fixed;top:14px;left:0;right:0;z-index:120;transition:top .4s var(--ease-out)}
.nav-in{
  max-width:1150px;margin:0 20px;padding:10px 14px 10px 22px;
  display:flex;align-items:center;justify-content:space-between;
  background:linear-gradient(150deg,rgba(255,255,255,.09),rgba(255,255,255,.035));
  -webkit-backdrop-filter:blur(24px) saturate(160%);backdrop-filter:blur(24px) saturate(160%);
  border:1px solid var(--glass-bd);border-radius:60px;
  box-shadow:0 12px 40px rgba(0,0,0,.35),inset 0 1px 0 rgba(255,255,255,.14);
  transition:box-shadow .4s,background .4s;
}
@media (min-width:1191px){.nav-in{margin:0 auto}}
.nav.scrolled .nav-in{box-shadow:0 16px 50px rgba(0,0,0,.55),0 0 30px rgba(77,232,255,.06),inset 0 1px 0 rgba(255,255,255,.16)}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.15rem;letter-spacing:.02em}
.logo b{color:var(--cyan)}
.logo-mark{
  width:34px;height:34px;border-radius:11px;display:grid;place-items:center;
  font-family:var(--mono);font-size:1rem;color:#04121c;font-weight:800;
  background:conic-gradient(from 210deg,var(--cyan),#7fd4ff,var(--violet),var(--cyan));
  box-shadow:0 0 18px rgba(77,232,255,.45),inset 0 1px 2px rgba(255,255,255,.55);
  animation:logoSpin 9s linear infinite;
}
@keyframes logoSpin{0%,72%{transform:rotate(0)}82%{transform:rotate(180deg) scale(1.08)}92%,100%{transform:rotate(360deg)}}
.nav-links{display:flex;align-items:center;gap:6px}
.nav-links a{padding:8px 15px;border-radius:40px;font-size:.94rem;color:var(--ink-dim);
  position:relative;transition:color .3s,background .3s,transform .3s var(--ease-spring)}
.nav-links a:hover{color:#fff;background:rgba(255,255,255,.07);transform:translateY(-1px)}
.nav-links a.cur{color:var(--cyan);background:rgba(77,232,255,.09)}
.nav-cta{
  color:#04121c!important;font-weight:700;
  background:linear-gradient(120deg,var(--cyan),#8ab8ff)!important;
  box-shadow:0 4px 18px rgba(77,232,255,.35),inset 0 1px 0 rgba(255,255,255,.6);
  animation:ctaPulse 3s ease-in-out infinite;
}
.nav-cta:hover{box-shadow:0 8px 26px rgba(77,232,255,.5)}
@keyframes ctaPulse{0%,100%{box-shadow:0 4px 18px rgba(77,232,255,.35)}50%{box-shadow:0 4px 26px rgba(77,232,255,.6)}}
.burger{display:none;flex-direction:column;gap:5px;padding:10px}
.burger span{width:22px;height:2px;background:var(--ink);border-radius:2px;transition:.35s var(--ease-out)}
.burger.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger.open span:nth-child(2){opacity:0}
.burger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ============ 通用文字组件 ============ */
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-family:var(--mono);font-size:.8rem;
  letter-spacing:.22em;text-transform:uppercase;color:var(--cyan);
  padding:6px 16px;border-radius:30px;border:1px solid rgba(77,232,255,.28);
  background:rgba(77,232,255,.06);margin-bottom:18px;
}
.eyebrow::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--cyan);
  box-shadow:0 0 10px var(--cyan);animation:dotBlink 1.6s ease infinite}
@keyframes dotBlink{50%{opacity:.25}}
.h-sec{font-size:clamp(1.9rem,4vw,2.9rem);font-weight:800;line-height:1.25;letter-spacing:.01em}
.h-sec em{font-style:normal;background:linear-gradient(100deg,var(--cyan),var(--violet) 60%,var(--amber));
  background-size:220% 100%;-webkit-background-clip:text;background-clip:text;color:transparent;
  animation:gradFlow 5.5s ease infinite}
.grad{background:linear-gradient(100deg,var(--cyan) 10%,#9db9ff 40%,var(--violet) 70%,var(--cyan) 100%);
  background-size:250% 100%;-webkit-background-clip:text;background-clip:text;color:transparent;
  animation:gradFlow 6s linear infinite}
@keyframes gradFlow{0%{background-position:0 0}50%{background-position:100% 0}100%{background-position:0 0}}
.lead{color:var(--ink-dim);font-size:1.06rem;max-width:720px;margin-top:16px}
.sec-head{margin-bottom:56px}
.sec-head .h-sec{position:relative;padding-bottom:18px}
.sec-head .h-sec::after{content:"";position:absolute;left:0;bottom:0;width:150px;height:3px;border-radius:3px;
  background:linear-gradient(90deg,var(--cyan),var(--violet),transparent);
  background-size:200% 100%;animation:underlineFlow 2.6s linear infinite;
  box-shadow:0 0 14px rgba(77,232,255,.5)}
@keyframes underlineFlow{to{background-position:-200% 0}}
.sec-head.center{text-align:center}
.sec-head.center .h-sec::after{left:50%;transform:translateX(-50%)}
.sec-head.center .lead{margin-left:auto;margin-right:auto}
.mono{font-family:var(--mono)}

/* 标题逐词 3D 弹出（JS 拆分 .w） */
.split .w{display:inline-block;opacity:0;transform:translateY(.65em) rotateX(-72deg);transform-origin:50% 100%}
.split.on .w{animation:wordPop .7s var(--ease-spring) forwards;animation-delay:calc(var(--wi)*.07s)}
@keyframes wordPop{to{opacity:1;transform:translateY(0) rotateX(0)}}
/* 修复：渐变字父元素的 background-clip:text 不会绘制到 inline-block 子 span 上，
   逐字拆分后需要把渐变直接刷在每个字上 */
.split .grad .w,.split em .w{
  background:linear-gradient(100deg,var(--cyan),#9db9ff 45%,var(--violet));
  -webkit-background-clip:text;background-clip:text;color:transparent}

/* ============ 滚动显现（多方向 + 3D 变体） ============ */
.rv{opacity:0;transform:translateY(46px);transition:opacity .9s var(--ease-out),transform .9s var(--ease-out);transition-delay:var(--d,0s);will-change:opacity,transform}
.rv-l{transform:translateX(-64px)}
.rv-r{transform:translateX(64px)}
.rv-zoom{transform:scale(.82)}
.rv-flip{transform:perspective(900px) rotateX(-24deg) translateY(50px);transform-origin:50% 100%}
.rv-wipe{clip-path:inset(0 100% 0 0);transform:none;transition:clip-path 1s var(--ease-out),opacity .6s;transition-delay:var(--d,0s)}
/* 注意：clip-path 只能加在 rv-wipe 上！加在所有 .rv.in 会把磁吸位移的按钮、
   3D 旋转窗口边角、悬浮徽章、阴影辉光全部裁掉（已踩坑） */
.rv.in{opacity:1;transform:none}
.rv-wipe.in{clip-path:inset(0 0 0 0)}

/* 区块级“剪辑式”光带扫过转场（滚动进入时触发，JS 加 .flash） */
section.flash::after{content:"";position:absolute;inset:0;z-index:6;pointer-events:none;
  background:linear-gradient(100deg,transparent 32%,rgba(120,220,255,.08) 45%,rgba(255,255,255,.14) 50%,rgba(139,92,246,.08) 55%,transparent 68%);
  background-size:300% 100%;background-position:135% 0;
  animation:secSweep .95s var(--ease-out) forwards}
@keyframes secSweep{to{background-position:-175% 0}}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;gap:9px;padding:14px 30px;border-radius:50px;
  font-size:1rem;font-weight:700;letter-spacing:.02em;position:relative;
  transition:transform .35s var(--ease-spring),box-shadow .35s;will-change:transform;
}
.btn-pri{color:#04121c;background:linear-gradient(120deg,var(--cyan),#7fb0ff);
  box-shadow:0 8px 30px rgba(77,232,255,.35),inset 0 1px 0 rgba(255,255,255,.65)}
/* 扫光改用背景渐变位移实现，不再依赖 overflow:hidden（避免裁切按钮内容/辉光） */
.btn-pri::after{content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;
  background:linear-gradient(115deg,transparent 42%,rgba(255,255,255,.55) 50%,transparent 58%);
  background-size:260% 100%;background-position:130% 0;
  animation:btnSheen 3.2s ease-in-out infinite}
@keyframes btnSheen{0%,55%{background-position:130% 0}100%{background-position:-150% 0}}
.btn-pri:hover{transform:translateY(-3px) scale(1.045);box-shadow:0 14px 42px rgba(77,232,255,.55)}
.btn-ghost{color:var(--ink);border:1px solid var(--glass-bd);
  background:rgba(255,255,255,.05);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px)}
.btn-ghost:hover{transform:translateY(-3px);border-color:rgba(77,232,255,.5);background:rgba(77,232,255,.08);
  box-shadow:0 10px 30px rgba(0,0,0,.35),0 0 24px rgba(77,232,255,.12)}
.btn-link{color:var(--cyan);padding:14px 10px}
.btn-link .ar{display:inline-block;transition:transform .3s var(--ease-spring)}
.btn-link:hover .ar{transform:translateX(6px)}

/* ============ HERO ============ */
/* overflow 改为可见：避免 3D 终端窗口和悬浮徽章被裁剪（横向溢出由 body overflow-x 兜底） */
.hero{min-height:100svh;display:flex;align-items:center;padding:150px 0 90px;perspective:1100px}
.hero-grid{display:grid;grid-template-columns:1.06fr .94fr;gap:56px;align-items:center;width:100%;
  transform-origin:50% 22%;will-change:transform,opacity}
.hero h1{font-size:clamp(2.5rem,5.6vw,4.2rem);font-weight:900;line-height:1.16;margin:20px 0 6px;perspective:800px}
.hero-badge{display:inline-flex;align-items:center;gap:10px;padding:8px 18px;border-radius:40px;
  font-size:.86rem;color:var(--cyan);border:1px solid rgba(77,232,255,.3);
  background:rgba(77,232,255,.07);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}
.hero-badge .dot{width:8px;height:8px;border-radius:50%;background:var(--green);box-shadow:0 0 12px var(--green);animation:dotBlink 1.5s ease infinite}
.hero-tag{font-size:1.25rem;color:var(--ink-dim);font-weight:600;margin-top:6px}
.hero-acts{display:flex;flex-wrap:wrap;gap:16px;margin-top:34px}
.hero-scan{position:absolute;left:0;right:0;top:0;height:100%;pointer-events:none;overflow:hidden;z-index:1}
.hero-scan::after{content:"";position:absolute;left:0;right:0;height:180px;top:-25%;
  background:linear-gradient(180deg,transparent,rgba(77,232,255,.055),transparent);
  animation:scanY 7s linear infinite}
@keyframes scanY{to{top:115%}}

/* 终端演示（3D 悬浮玻璃） */
.term-wrap{position:relative;transform-style:preserve-3d;perspective:1000px}
.term{padding:0;overflow:hidden;border-radius:22px;
  box-shadow:0 30px 80px rgba(0,0,0,.55),0 0 50px rgba(77,232,255,.07);
  transform:rotateY(-7deg) rotateX(3deg);
  animation:termFloat 7s ease-in-out infinite;will-change:transform}
@keyframes termFloat{0%,100%{transform:rotateY(-7deg) rotateX(3deg) translateY(0)}50%{transform:rotateY(-5deg) rotateX(2deg) translateY(-14px)}}
.term-bar{display:flex;align-items:center;gap:8px;padding:13px 18px;
  border-bottom:1px solid var(--glass-bd);background:rgba(255,255,255,.03)}
.term-bar i{width:11px;height:11px;border-radius:50%}
.term-bar i:nth-child(1){background:#ff5f57}.term-bar i:nth-child(2){background:#febc2e}.term-bar i:nth-child(3){background:#28c840}
.term-title{font-family:var(--mono);font-size:.8rem;color:var(--ink-faint);margin-left:8px}
.term-status{margin-left:auto;display:flex;align-items:center;gap:7px;font-size:.74rem;color:var(--green)}
.term-status .dot{width:7px;height:7px;border-radius:50%;background:var(--green);box-shadow:0 0 8px var(--green);animation:dotBlink 1.4s infinite}
/* 固定高度+内部滚动：防止打字时窗口不断撑高/回缩带动整页布局抖动；
   滚动条隐藏不显示（滚动能力保留，脚本自动滚动），避免与玻璃背景违和 */
.term-body{padding:20px;height:272px;overflow-y:auto;font-size:.9rem;display:flex;flex-direction:column;gap:12px;
  scrollbar-width:none;-ms-overflow-style:none}
.term-body::-webkit-scrollbar{display:none;width:0;height:0}
.t-msg{display:flex;gap:10px;align-items:flex-start;width:100%;opacity:0;transform:translateY(14px) scale(.96);transition:.5s var(--ease-spring)}
.t-msg.show{opacity:1;transform:none}
/* AI 消息靠右（聊天软件习惯：自己发的在右侧） */
.t-msg.ai{flex-direction:row-reverse}
.t-msg.ai>div{display:flex;flex-direction:column;align-items:flex-end}
.t-msg.ai .t-name{text-align:right}
.t-msg.ai .t-bubble{border-radius:16px 4px 16px 16px;text-align:left}
.t-msg.them .t-bubble{border-radius:4px 16px 16px 16px}
.t-ava{flex:none;width:30px;height:30px;border-radius:10px;display:grid;place-items:center;font-size:.75rem;font-weight:700;
  background:rgba(255,255,255,.08);border:1px solid var(--glass-bd)}
.t-msg.ai .t-ava{background:rgba(77,232,255,.14);color:var(--cyan);border-color:rgba(77,232,255,.35)}
.t-bubble{padding:9px 14px;border-radius:14px;background:rgba(255,255,255,.06);border:1px solid var(--glass-bd);max-width:82%}
.t-msg.ai .t-bubble{background:rgba(77,232,255,.08);border-color:rgba(77,232,255,.25)}
.t-name{font-size:.7rem;color:var(--ink-faint);margin-bottom:2px;font-family:var(--mono)}
.t-caret{display:inline-block;width:8px;height:1em;vertical-align:-2px;background:var(--cyan);animation:dotBlink .8s infinite}
.term-keys{display:flex;align-items:center;gap:12px;padding:13px 18px;border-top:1px solid var(--glass-bd);
  font-size:.72rem;color:var(--ink-faint);font-family:var(--mono)}
.keys-row{display:flex;gap:5px}
.keys-row b{width:22px;height:22px;display:grid;place-items:center;border-radius:6px;font-size:.68rem;
  background:rgba(255,255,255,.06);border:1px solid var(--glass-bd);color:var(--ink-dim);transition:.15s}
.keys-row b.hit{background:rgba(77,232,255,.3);color:#fff;border-color:var(--cyan);transform:translateY(2px);box-shadow:0 0 10px rgba(77,232,255,.5)}
.hud{position:absolute;z-index:3;display:flex;align-items:center;gap:10px;padding:11px 17px;border-radius:16px;
  background:rgba(14,20,38,.6);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);
  border:1px solid var(--glass-bd);box-shadow:0 14px 34px rgba(0,0,0,.4);font-size:.82rem;
  animation:hudFloat 5.6s ease-in-out infinite}
.hud b{font-size:.86rem}.hud small{display:block;color:var(--ink-faint);font-size:.7rem}
.hud .ic{width:9px;height:9px;border-radius:50%;box-shadow:0 0 10px currentColor}
.hud-1{top:-26px;left:-14px;animation-delay:-1s}
.hud-2{bottom:-22px;left:8%;animation-delay:-2.6s}
.hud-3{right:-18px;top:34%;animation-delay:-4s}
.hud-4{top:-46px;right:6%;animation-delay:-5.2s}
@keyframes hudFloat{0%,100%{transform:translateY(0)}50%{transform:translateY(-12px)}}

/* ============ Bento 功能卡片（3D tilt） ============ */
.bento{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.card{padding:32px 30px;overflow:hidden;transform-style:preserve-3d;display:block;
  transition:transform .5s var(--ease-out),border-color .4s,box-shadow .5s;will-change:transform}
.card:hover{border-color:rgba(77,232,255,.4);box-shadow:0 26px 60px rgba(0,0,0,.5),0 0 44px rgba(77,232,255,.09)}
.card.wide{grid-column:span 2}
.card h3{font-size:1.22rem;margin:18px 0 10px;display:flex;align-items:center;gap:10px;flex-wrap:wrap;transform:translateZ(34px)}
.card p{color:var(--ink-dim);font-size:.96rem;transform:translateZ(22px)}
.card-ic{width:52px;height:52px;border-radius:16px;display:grid;place-items:center;color:var(--cyan);
  background:rgba(77,232,255,.07);border:1px solid rgba(77,232,255,.28);transform:translateZ(46px);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.18),0 6px 18px rgba(0,0,0,.3);
  transition:transform .45s var(--ease-spring),box-shadow .45s}
.card:not(:hover) .card-ic{animation:icFloat 4.2s ease-in-out infinite}
@keyframes icFloat{0%,100%{transform:translateZ(46px) translateY(0) rotate(0)}50%{transform:translateZ(46px) translateY(-7px) rotate(-4deg)}}
.card:hover .card-ic{transform:translateZ(58px) scale(1.12) rotate(-6deg);box-shadow:0 0 26px rgba(77,232,255,.35)}
.tag{font-size:.66rem;font-family:var(--mono);letter-spacing:.08em;padding:3px 10px;border-radius:20px;font-weight:600}
.tag-pro{color:var(--amber);border:1px solid rgba(255,180,84,.45);background:rgba(255,180,84,.08)}
.tag-ent{color:var(--violet);border:1px solid rgba(139,92,246,.5);background:rgba(139,92,246,.1)}
.tag-core{color:var(--cyan);border:1px solid rgba(77,232,255,.45);background:rgba(77,232,255,.08)}
.tag-only{color:var(--green);border:1px solid rgba(52,227,154,.45);background:rgba(52,227,154,.08)}

/* ============ 模型跑马灯 ============ */
.models-sec{padding-bottom:70px}
.mq{overflow:hidden;padding:14px 0;position:relative;
  mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent);
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent)}
.mq-track{display:flex;gap:18px;width:max-content;animation:mq 30s linear infinite}
.mq-track.rev{animation:mqR 34s linear infinite}
.mq:hover .mq-track{animation-play-state:paused}
@keyframes mq{to{transform:translateX(-50%)}}
@keyframes mqR{from{transform:translateX(-50%)}to{transform:translateX(0)}}
.chip{display:flex;align-items:center;gap:13px;padding:13px 24px;border-radius:18px;white-space:nowrap;
  transition:transform .4s var(--ease-spring),border-color .3s,box-shadow .4s}
.chip:hover{transform:translateY(-6px) scale(1.05) rotate(-1deg);border-color:rgba(77,232,255,.45);box-shadow:0 16px 34px rgba(0,0,0,.4),0 0 26px rgba(77,232,255,.14)}
.chip .mk{width:40px;height:40px;border-radius:12px;display:grid;place-items:center;font-family:var(--mono);
  font-weight:800;font-size:.82rem;color:var(--cyan);background:rgba(77,232,255,.09);border:1px solid rgba(77,232,255,.3);
  animation:mkGlow 3s ease-in-out infinite}
@keyframes mkGlow{50%{box-shadow:0 0 16px rgba(77,232,255,.35)}}
.chip.am .mk{color:var(--amber);background:rgba(255,180,84,.09);border-color:rgba(255,180,84,.32)}
.chip.gr .mk{color:var(--green);background:rgba(52,227,154,.09);border-color:rgba(52,227,154,.3)}
.chip span{font-weight:600;font-size:.95rem}
.chip small{display:block;font-family:var(--mono);font-size:.62rem;letter-spacing:.14em;color:var(--ink-faint)}
.models-note{max-width:860px;margin:34px auto 0;text-align:center;font-size:.82rem;color:var(--ink-faint);padding:0 28px}

/* ============ 工作流程 ============ */
.flow-arrows .ar{display:inline-block;color:var(--cyan);animation:arSlide 1.6s ease infinite}
@keyframes arSlide{0%,100%{transform:translateX(0);opacity:.5}50%{transform:translateX(8px);opacity:1}}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;position:relative}
.steps::before{content:"";position:absolute;top:54px;left:8%;right:8%;height:2px;z-index:0;
  background:linear-gradient(90deg,transparent,rgba(77,232,255,.55) 20%,rgba(139,92,246,.55) 80%,transparent);
  background-size:200% 100%;animation:lineFlow 3.5s linear infinite}
@keyframes lineFlow{to{background-position:-200% 0}}
.step{padding:36px 30px;z-index:1;transition:transform .5s var(--ease-out),border-color .4s,box-shadow .5s}
.step:hover{transform:translateY(-10px) rotateX(4deg);border-color:rgba(77,232,255,.4);box-shadow:0 26px 60px rgba(0,0,0,.5)}
.step-num{width:60px;height:60px;border-radius:19px;display:grid;place-items:center;margin-bottom:22px;
  background:linear-gradient(150deg,rgba(77,232,255,.16),rgba(139,92,246,.14));
  border:1px solid rgba(77,232,255,.35);box-shadow:inset 0 1px 0 rgba(255,255,255,.2),0 0 22px rgba(77,232,255,.12);
  animation:numGlow 3.4s ease-in-out infinite}
@keyframes numGlow{50%{box-shadow:inset 0 1px 0 rgba(255,255,255,.2),0 0 34px rgba(77,232,255,.3)}}
.step-num i{font-style:normal;font-family:var(--mono);font-weight:800;font-size:1.15rem;color:var(--cyan)}
.step h3{font-size:1.2rem;margin-bottom:10px;display:flex;flex-direction:column;gap:4px}
.step h3 .mono{font-size:.72rem;letter-spacing:.2em;color:var(--ink-faint)}
.step p{color:var(--ink-dim);font-size:.95rem}

/* ============ 安全区 ============ */
.safety-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:60px;align-items:start}
.safety-left{position:sticky;top:120px}
.safety-list{display:flex;flex-direction:column;gap:18px}
.safety-item{display:flex;gap:20px;padding:26px 28px;transition:transform .45s var(--ease-out),border-color .35s,box-shadow .45s}
.safety-item:hover{transform:translateX(10px) scale(1.015);border-color:rgba(52,227,154,.4);box-shadow:0 18px 46px rgba(0,0,0,.45),0 0 30px rgba(52,227,154,.08)}
.safety-item .sh{flex:none;width:48px;height:48px;border-radius:15px;display:grid;place-items:center;color:var(--green);
  background:rgba(52,227,154,.08);border:1px solid rgba(52,227,154,.32);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.15)}
.safety-item h3{font-size:1.1rem;margin-bottom:6px}
.safety-item p{color:var(--ink-dim);font-size:.93rem}

/* ============ 主题展示 ============ */
.themes-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;perspective:1400px}
.theme-card{overflow:hidden;transform-style:preserve-3d;
  transition:transform .55s var(--ease-out),border-color .4s,box-shadow .55s}
.theme-card:hover{border-color:rgba(77,232,255,.42);box-shadow:0 34px 76px rgba(0,0,0,.55),0 0 46px rgba(77,232,255,.1)}
.theme-shot{overflow:hidden;border-radius:var(--r-lg) var(--r-lg) 0 0;border-bottom:1px solid var(--glass-bd)}
.theme-shot img{transition:transform .8s var(--ease-out);transform:scale(1.02);cursor:zoom-in}
.theme-card:hover .theme-shot img{transform:scale(1.1) rotate(.5deg)}
.theme-body{padding:22px 26px 26px}
.theme-body h3{font-size:1.12rem;display:flex;align-items:center;gap:9px;margin-bottom:8px}
.theme-body .em{font-size:1.25rem}
.theme-body p{color:var(--ink-dim);font-size:.92rem}

/* ============ CTA ============ */
.cta-sec{padding:120px 0 130px}
.cta-box{text-align:center;padding:80px 44px;isolation:isolate}
.cta-box::after{content:"";position:absolute;inset:0;border-radius:inherit;z-index:-1;pointer-events:none;
  background:radial-gradient(60% 120% at 50% 0%,rgba(77,232,255,.09),transparent 70%)}
.cta-glow{position:absolute;inset:-3px;border-radius:inherit;z-index:-2;pointer-events:none;overflow:hidden}
.cta-glow::before{content:"";position:absolute;inset:-40%;
  background:conic-gradient(transparent 12%,rgba(77,232,255,.6),rgba(139,92,246,.6),transparent 42%);
  animation:spin 6s linear infinite}
.cta-glow::after{content:"";position:absolute;inset:3px;border-radius:24px;background:#0a101f}
@keyframes spin{to{transform:rotate(360deg)}}
.cta-box h2{font-size:clamp(1.8rem,3.6vw,2.7rem);line-height:1.3;font-weight:800}
.cta-box h2 em{font-style:normal;background:linear-gradient(100deg,var(--cyan),var(--violet));
  -webkit-background-clip:text;background-clip:text;color:transparent}
.cta-box .lead{margin:18px auto 0}
.cta-acts{display:flex;justify-content:center;flex-wrap:wrap;gap:16px;margin-top:36px}

/* ============ 内页 HERO / 面包屑 / 统计 ============ */
.page-hero{padding:170px 0 60px;overflow:hidden}
.page-hero h1{font-size:clamp(2.3rem,5vw,3.6rem);font-weight:900;line-height:1.2;perspective:800px}
.page-hero h1 em{font-style:normal;background:linear-gradient(100deg,var(--cyan),var(--violet));
  -webkit-background-clip:text;background-clip:text;color:transparent}
.crumb{display:flex;align-items:center;gap:10px;font-size:.86rem;color:var(--ink-faint);margin-bottom:22px;font-family:var(--mono)}
.crumb a:hover{color:var(--cyan)}
.crumb .sp{opacity:.4}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:48px}
.stat{padding:26px 24px;text-align:center;transition:transform .45s var(--ease-out),border-color .35s,box-shadow .45s}
.stat:hover{transform:translateY(-8px) scale(1.03);border-color:rgba(77,232,255,.4);box-shadow:0 20px 46px rgba(0,0,0,.45)}
.stat .num{font-family:var(--mono);font-weight:800;font-size:2rem;color:var(--cyan);text-shadow:0 0 24px rgba(77,232,255,.4)}
.stat .num sub{font-size:1.1rem;vertical-align:baseline;color:var(--amber)}
.stat .lb{margin-top:6px;font-size:.85rem;color:var(--ink-dim)}

/* ============ 功能详情布局 ============ */
.feat-layout{display:grid;grid-template-columns:230px 1fr;gap:44px;align-items:start}
.feat-rail,.doc-toc{position:sticky;top:110px;padding:22px 20px;border-radius:var(--r-md)}
.rail-h{font-family:var(--mono);font-size:.72rem;letter-spacing:.2em;color:var(--ink-faint);margin-bottom:14px}
.rail-links{display:flex;flex-direction:column;gap:4px}
.rail-links a{padding:9px 13px;border-radius:11px;font-size:.9rem;color:var(--ink-dim);
  border-left:2px solid transparent;transition:.3s}
.rail-links a:hover{color:#fff;background:rgba(255,255,255,.06);transform:translateX(4px)}
.rail-links a.cur{color:var(--cyan);background:rgba(77,232,255,.08);border-left-color:var(--cyan)}
.fcat{margin-bottom:78px}
.fcat-head{display:flex;align-items:center;gap:18px;margin-bottom:14px}
.fcat-ic{width:58px;height:58px;border-radius:18px;display:grid;place-items:center;font-size:1.6rem;
  background:linear-gradient(150deg,rgba(77,232,255,.12),rgba(139,92,246,.12));
  border:1px solid var(--glass-bd);box-shadow:inset 0 1px 0 rgba(255,255,255,.16);
  animation:hudFloat 6s ease-in-out infinite}
.fcat-head h2{font-size:1.65rem;font-weight:800;display:flex;flex-direction:column}
.fcat-head .idx{font-family:var(--mono);font-size:.68rem;letter-spacing:.26em;color:var(--cyan);opacity:.85}
.fcat-desc{color:var(--ink-dim);margin-bottom:28px;max-width:640px}
.fgrid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.fcard{padding:26px 26px 24px;overflow:hidden;transform-style:preserve-3d;
  transition:transform .5s var(--ease-out),border-color .4s,box-shadow .5s}
.fcard:hover{border-color:rgba(77,232,255,.38);box-shadow:0 22px 52px rgba(0,0,0,.5),0 0 34px rgba(77,232,255,.07)}
.fcard .top{display:flex;align-items:center;gap:11px;flex-wrap:wrap;margin-bottom:10px;transform:translateZ(26px)}
.fcard .fic{font-size:1.45rem;filter:drop-shadow(0 0 10px rgba(77,232,255,.35));transition:transform .4s var(--ease-spring)}
.fcard:hover .fic{transform:scale(1.25) rotate(-8deg)}
.fcard h3{font-size:1.08rem}
.fcard p{color:var(--ink-dim);font-size:.92rem;transform:translateZ(16px)}
.flines{list-style:none;margin-top:12px;display:flex;flex-direction:column;gap:6px}
.flines li{font-size:.85rem;color:var(--ink-dim);padding-left:20px;position:relative}
.flines li::before{content:"▸";position:absolute;left:2px;color:var(--cyan)}
.fnote{margin-top:14px;padding:12px 15px;border-radius:12px;font-size:.78rem;color:var(--ink-faint);
  background:rgba(255,255,255,.04);border:1px dashed var(--glass-bd)}

/* ============ 文档页（隐私/协议） ============ */
.doc-layout{display:grid;grid-template-columns:250px 1fr;gap:44px;align-items:start}
.doc-body{padding:52px 54px;border-radius:var(--r-lg)}
.doc-meta{display:flex;gap:22px;flex-wrap:wrap;font-family:var(--mono);font-size:.8rem;color:var(--ink-faint);
  padding-bottom:22px;margin-bottom:30px;border-bottom:1px solid var(--glass-bd)}
.doc-body h2{font-size:1.4rem;margin:44px 0 16px;padding-left:16px;position:relative;scroll-margin-top:120px}
.doc-body h2::before{content:"";position:absolute;left:0;top:8px;bottom:8px;width:4px;border-radius:4px;
  background:linear-gradient(180deg,var(--cyan),var(--violet));box-shadow:0 0 12px rgba(77,232,255,.5)}
.doc-body h2:first-of-type{margin-top:0}
.doc-body h3{font-size:1.05rem;margin:26px 0 10px;color:var(--cyan-soft)}
.doc-body p{color:var(--ink-dim);font-size:.95rem;margin-bottom:13px}
.doc-body strong{color:var(--ink)}
.doc-body ul{margin:6px 0 18px 22px;color:var(--ink-dim);font-size:.95rem;display:flex;flex-direction:column;gap:7px}
.doc-body ul li::marker{color:var(--cyan)}
.keynote{padding:22px 26px;border-radius:var(--r-md);margin-bottom:26px;font-size:.95rem;color:var(--ink-dim);
  background:linear-gradient(140deg,rgba(77,232,255,.08),rgba(139,92,246,.06));
  border:1px solid rgba(77,232,255,.3);box-shadow:inset 0 1px 0 rgba(255,255,255,.1),0 0 30px rgba(77,232,255,.05)}
.keynote strong{color:var(--cyan)}
.alert{padding:26px 28px;border-radius:var(--r-md);margin:18px 0 26px;
  background:linear-gradient(140deg,rgba(255,120,90,.07),rgba(255,180,84,.05));
  border:1px solid rgba(255,150,100,.35);box-shadow:inset 0 1px 0 rgba(255,255,255,.08)}
.alert .at{display:block;font-weight:800;color:var(--amber);margin-bottom:12px}
.alert p{margin-bottom:12px}
.doc-table{width:100%;border-collapse:collapse;font-size:.92rem;margin:10px 0 20px;border-radius:14px;overflow:hidden}
.doc-table th,.doc-table td{padding:13px 16px;text-align:left;border:1px solid var(--glass-bd)}
.doc-table th{background:rgba(77,232,255,.08);color:var(--cyan);font-family:var(--mono);font-size:.82rem;letter-spacing:.06em}
.doc-table td{color:var(--ink-dim);background:rgba(255,255,255,.02)}
.doc-table tr:hover td{background:rgba(77,232,255,.04)}
.doc-contact{padding:26px 30px;border-radius:var(--r-md);margin-top:10px;
  background:linear-gradient(140deg,rgba(77,232,255,.07),rgba(255,255,255,.03));
  border:1px solid rgba(77,232,255,.28)}
.doc-contact b{display:block;font-size:1.05rem;margin-bottom:8px;color:var(--cyan)}
.doc-contact p{margin-bottom:6px}
.doc-contact a{color:var(--cyan);border-bottom:1px dashed rgba(77,232,255,.4)}

/* ============ 图片灯箱（点击放大） ============ */
.lb{position:fixed;inset:0;z-index:500;display:grid;place-items:center;padding:18px;
  background:rgba(4,8,18,.78);-webkit-backdrop-filter:blur(20px) saturate(120%);backdrop-filter:blur(20px) saturate(120%);
  opacity:0;pointer-events:none;transition:opacity .35s}
.lb.open{opacity:1;pointer-events:auto}
/* 宽高按视口减去边距计算，避免手机端图片超出右侧看不到 */
.lb img{max-width:calc(100vw - 36px);max-height:calc(100vh - 96px);width:auto;height:auto;border-radius:18px;cursor:zoom-out;
  border:1px solid rgba(255,255,255,.18);
  box-shadow:0 46px 130px rgba(0,0,0,.75),0 0 70px rgba(77,232,255,.14);
  transform:scale(.84) translateY(20px);transition:transform .5s var(--ease-spring)}
.lb.open img{transform:scale(1) translateY(0)}
.lb-close{position:absolute;top:22px;right:30px;font-size:2.2rem;line-height:1;color:#fff;opacity:.65;transition:.3s}
.lb-close:hover{opacity:1;transform:rotate(90deg) scale(1.15)}
.lb-tip{position:absolute;bottom:20px;left:50%;transform:translateX(-50%);
  font-size:.8rem;color:var(--ink-faint);font-family:var(--mono);letter-spacing:.1em}

/* ============ 3D 玻璃方块（互动小模型，JS 注入与驱动） ============ */
.cube-wrap{position:fixed;z-index:1;pointer-events:none;perspective:900px}
.cube{position:relative;transform-style:preserve-3d;will-change:transform}
.cube i{position:absolute;inset:0;border:1px solid rgba(96,220,255,.5);
  background:linear-gradient(150deg,rgba(77,232,255,.13),rgba(139,92,246,.11) 60%,rgba(255,80,190,.08));
  box-shadow:inset 0 0 26px rgba(77,232,255,.14)}

/* ============ FOOTER ============ */
footer{position:relative;z-index:2;margin-top:40px;padding:70px 0 34px;
  background:linear-gradient(180deg,transparent,rgba(8,12,24,.85) 30%);
  border-top:1px solid var(--glass-bd);
  -webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px)}
.foot-grid{display:grid;grid-template-columns:1.3fr .8fr 1fr;gap:44px;padding-bottom:44px}
.foot-brand p{color:var(--ink-faint);font-size:.9rem;margin-top:14px;max-width:340px}
.foot-h{font-family:var(--mono);font-size:.74rem;letter-spacing:.2em;color:var(--ink-faint);margin-bottom:16px}
.foot-links{display:flex;flex-direction:column;gap:9px}
.foot-links a{color:var(--ink-dim);font-size:.92rem;width:fit-content;position:relative;transition:color .3s}
.foot-links a::after{content:"";position:absolute;left:0;bottom:-2px;height:1px;width:0;background:var(--cyan);transition:width .35s var(--ease-out)}
.foot-links a:hover{color:var(--cyan)}
.foot-links a:hover::after{width:100%}
.foot-bar{display:flex;flex-wrap:wrap;gap:12px 26px;justify-content:space-between;align-items:center;
  padding-top:26px;border-top:1px solid var(--glass-bd);font-size:.8rem;color:var(--ink-faint)}
.foot-bar a:hover{color:var(--cyan)}
.foot-bar .sep{opacity:.35;margin:0 6px}

/* ============ 在线客服 ============ */
.cw-btn{position:fixed;right:26px;bottom:96px;z-index:150;width:58px;height:58px;border-radius:50%;
  display:grid;place-items:center;color:#04121c;
  background:linear-gradient(140deg,var(--cyan),#7fb0ff);
  box-shadow:0 10px 30px rgba(77,232,255,.4),inset 0 1px 0 rgba(255,255,255,.6);
  transition:transform .4s var(--ease-spring);animation:cwBob 4s ease-in-out infinite}
@keyframes cwBob{0%,100%{transform:translateY(0)}50%{transform:translateY(-7px)}}
.cw-btn:hover{transform:scale(1.12)}
.cw-btn svg{width:26px;height:26px;position:absolute;transition:.35s var(--ease-spring)}
.cw-btn .ic-x{opacity:0;transform:rotate(-90deg) scale(.4)}
.cw-btn.open .ic-chat{opacity:0;transform:rotate(90deg) scale(.4)}
.cw-btn.open .ic-x{opacity:1;transform:none}
.cw-tip{position:fixed;right:96px;bottom:112px;z-index:150;font-size:.8rem;padding:7px 14px;border-radius:20px;
  background:rgba(14,20,38,.85);border:1px solid var(--glass-bd);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  opacity:0;transform:translateX(8px);transition:.35s;pointer-events:none}
.cw-btn:hover~.cw-tip{opacity:1;transform:none}
.cw-panel{position:fixed;right:26px;bottom:168px;z-index:150;width:min(340px,calc(100vw - 48px));
  border-radius:22px;overflow:hidden;box-shadow:0 30px 70px rgba(0,0,0,.6);
  background:rgba(12,18,34,.88);
  opacity:0;transform:translateY(24px) scale(.92);transform-origin:100% 100%;pointer-events:none;
  transition:.45s var(--ease-spring)}
.cw-panel.open{opacity:1;transform:none;pointer-events:auto}
.cw-head{display:flex;align-items:center;gap:12px;padding:16px 18px;border-bottom:1px solid var(--glass-bd);
  background:rgba(77,232,255,.06)}
.cw-ava,.mini-ava{width:38px;height:38px;border-radius:12px;display:grid;place-items:center;font-weight:800;color:#04121c;
  background:linear-gradient(140deg,var(--cyan),#7fb0ff);flex:none}
.mini-ava{width:28px;height:28px;font-size:.75rem;border-radius:9px}
.cw-head b{font-size:.95rem;display:block}
.cw-head small{color:var(--green);font-family:var(--mono);font-size:.66rem;letter-spacing:.16em}
.cw-close{margin-left:auto;font-size:1.4rem;color:var(--ink-faint);padding:4px 10px;transition:.25s}
.cw-close:hover{color:#fff;transform:rotate(90deg)}
.cw-body{padding:18px;height:min(320px,44vh);overflow-y:auto;display:flex;flex-direction:column;gap:12px;scrollbar-width:none;-ms-overflow-style:none}
.cw-body::-webkit-scrollbar{display:none;width:0;height:0}
.cw-msg{display:flex;gap:10px;align-items:flex-start}
.cw-msg.me{flex-direction:row-reverse}
.cw-bubble{padding:12px 15px;border-radius:4px 16px 16px 16px;font-size:.88rem;color:var(--ink-dim);
  background:rgba(255,255,255,.06);border:1px solid var(--glass-bd);max-width:84%;white-space:pre-wrap;word-break:break-word;line-height:1.62}
.cw-msg.me .cw-bubble{border-radius:16px 4px 16px 16px;color:#04121c;background:linear-gradient(120deg,var(--cyan),#7fb0ff);border-color:transparent}
.cw-typing{opacity:.75;animation:cwPulse 1.1s ease-in-out infinite}
@keyframes cwPulse{0%,100%{opacity:.5}50%{opacity:.95}}
.cw-bubble a{color:var(--cyan)}
.cw-mail{display:inline-flex;margin-top:10px;padding:8px 16px;border-radius:30px;font-size:.82rem;font-weight:700;
  color:#04121c!important;background:linear-gradient(120deg,var(--cyan),#7fb0ff);transition:transform .3s var(--ease-spring)}
.cw-mail:hover{transform:scale(1.06)}
.cw-foot{display:flex;gap:10px;padding:14px 16px;border-top:1px solid var(--glass-bd)}
.cw-input{flex:1;padding:10px 15px;border-radius:30px;border:1px solid var(--glass-bd);
  background:rgba(255,255,255,.05);color:var(--ink);font-size:.86rem;outline:none}
.cw-send{padding:10px 20px;border-radius:30px;font-size:.86rem;color:var(--ink-faint);
  background:rgba(255,255,255,.06);border:1px solid var(--glass-bd)}
.cw-send:disabled,.cw-input:disabled{opacity:.55;cursor:not-allowed}

/* ============ 回到顶部 ============ */
.btt{position:fixed;right:26px;bottom:26px;z-index:150;width:48px;height:48px;border-radius:15px;
  font-size:1.15rem;color:var(--cyan);display:grid;place-items:center;
  background:rgba(14,20,38,.7);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
  border:1px solid var(--glass-bd);opacity:0;transform:translateY(16px);pointer-events:none;
  transition:.4s var(--ease-out)}
.btt.show{opacity:1;transform:none;pointer-events:auto}
.btt:hover{border-color:rgba(77,232,255,.5);box-shadow:0 0 24px rgba(77,232,255,.2);transform:translateY(-4px)}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:70px}
  .term{transform:none;animation:termFloatFlat 7s ease-in-out infinite}
  .bento{grid-template-columns:1fr 1fr}
  .card.wide{grid-column:span 2}
  .safety-grid{grid-template-columns:1fr;gap:40px}
  .safety-left{position:static}
  .themes-grid{grid-template-columns:1fr;max-width:560px;margin:0 auto}
  .feat-layout,.doc-layout{grid-template-columns:1fr}
  .feat-rail,.doc-toc{position:static}
  .rail-links{flex-direction:row;flex-wrap:wrap}
  .rail-links a{border-left:none;border:1px solid var(--glass-bd)}
  .stats{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@keyframes termFloatFlat{0%,100%{transform:translateY(0)}50%{transform:translateY(-12px)}}
@media (max-width:720px){
  section{padding:80px 0}
  .nav{top:10px}
  .nav-in{margin:0 12px;padding:9px 12px 9px 16px}
  .nav-links{
    position:fixed;top:74px;left:12px;right:12px;flex-direction:column;align-items:stretch;gap:6px;
    padding:18px;border-radius:22px;
    background:rgba(10,15,30,.92);-webkit-backdrop-filter:blur(26px);backdrop-filter:blur(26px);
    border:1px solid var(--glass-bd);box-shadow:0 30px 70px rgba(0,0,0,.6);
    opacity:0;transform:translateY(-14px) scale(.97);pointer-events:none;transition:.4s var(--ease-spring)}
  .nav-links.open{opacity:1;transform:none;pointer-events:auto}
  .nav-links a{padding:12px 16px;text-align:center}
  .burger{display:flex}
  .hero{padding-top:120px}
  .hero-acts .btn{width:100%;justify-content:center}
  .bento,.fgrid{grid-template-columns:1fr}
  .card.wide{grid-column:span 1}
  .steps{grid-template-columns:1fr}
  .steps::before{display:none}
  .stats{grid-template-columns:1fr 1fr}
  .doc-body{padding:34px 24px}
  .foot-grid{grid-template-columns:1fr}
  .foot-bar{flex-direction:column;align-items:flex-start}
  .hud{display:none}
  .wm{display:none}
}

/* 动效策略：用户要求全站动画无条件开启，不再随系统“减弱动态效果”设置降级 */