/* allzip 官网 —  palette 取自产品图标规范：蓝 #0B54F9 / 青 #01ADFD / 紫 #6F14FB / 深蓝 #12103F */
:root{
  --ink:#07061a;
  --ink-2:#12103f;
  --ink-3:#1a1747;
  --blue:#0b54f9;
  --cyan:#01adfd;
  --violet:#6f14fb;
  --magenta:#f038a0;
  --green:#2fd483;
  --amber:#ffb020;
  --red:#ff4d5e;
  --paper:#f4f1ea;
  --paper-2:#ece7dc;
  --paper-ink:#181633;
  --paper-muted:#5c5878;
  --cool:#e7eaf3;
  --text:#edeffa;
  --muted:#a7abd0;
  --line:rgba(255,255,255,.10);
  --line-2:rgba(255,255,255,.18);
  --grad:linear-gradient(90deg,var(--cyan) 0%,var(--blue) 55%,var(--violet) 100%);
  --radius:18px;
  --nav-h:64px;
  --font:-apple-system,BlinkMacSystemFont,"SF Pro Display","SF Pro Text","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  --mono:ui-monospace,"SF Mono",SFMono-Regular,Menlo,Consolas,monospace;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--nav-h) + 18px)}
body{
  font-family:var(--font);
  background:var(--ink);
  color:var(--text);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
::selection{background:rgba(11,84,249,.55);color:#fff}

/* ---------- 自定义滚动条 ---------- */
html{scrollbar-width:thin;scrollbar-color:#2b2a6e var(--ink)}
::-webkit-scrollbar{width:11px;height:11px}
::-webkit-scrollbar-track{background:var(--ink)}
::-webkit-scrollbar-thumb{
  background:linear-gradient(180deg,var(--blue),var(--violet));
  border-radius:8px;border:3px solid var(--ink);
}
::-webkit-scrollbar-thumb:hover{background:linear-gradient(180deg,var(--cyan),var(--magenta))}
.fmt-table-wrap::-webkit-scrollbar{height:9px}
.fmt-table-wrap::-webkit-scrollbar-track{background:var(--paper-2)}
.fmt-table-wrap::-webkit-scrollbar-thumb{background:#b9b2a4;border:2px solid var(--paper-2)}
.fmt-table-wrap::-webkit-scrollbar-thumb:hover{background:var(--blue)}

/* ---------- 背景层 ---------- */
.bg{position:fixed;inset:0;z-index:-1;overflow:hidden;background:var(--ink)}
.bg-mesh{
  position:absolute;inset:-20%;
  background:
    radial-gradient(42% 38% at 18% 12%,rgba(11,84,249,.34),transparent 62%),
    radial-gradient(36% 34% at 82% 8%,rgba(111,20,251,.30),transparent 60%),
    radial-gradient(46% 42% at 62% 78%,rgba(1,173,253,.16),transparent 64%),
    radial-gradient(30% 30% at 8% 82%,rgba(240,56,160,.14),transparent 60%),
    linear-gradient(180deg,#0a0824 0%,var(--ink) 46%,#0b0722 100%);
}
.bg-aurora{position:absolute;border-radius:50%;filter:blur(70px);opacity:.5;mix-blend-mode:screen;will-change:transform}
.a1{width:46vw;height:46vw;left:-12vw;top:-14vw;background:radial-gradient(circle at 40% 40%,rgba(1,173,253,.55),transparent 65%);animation:drift1 26s ease-in-out infinite alternate}
.a2{width:40vw;height:40vw;right:-10vw;top:6vh;background:radial-gradient(circle at 55% 45%,rgba(111,20,251,.55),transparent 65%);animation:drift2 32s ease-in-out infinite alternate}
.a3{width:34vw;height:34vw;left:34vw;bottom:-16vw;background:radial-gradient(circle at 50% 50%,rgba(240,56,160,.34),transparent 65%);animation:drift3 38s ease-in-out infinite alternate}
@keyframes drift1{to{transform:translate3d(9vw,7vh,0) scale(1.12)}}
@keyframes drift2{to{transform:translate3d(-8vw,10vh,0) scale(.9)}}
@keyframes drift3{to{transform:translate3d(6vw,-8vh,0) scale(1.15)}}
.bg-grid{
  position:absolute;inset:0;opacity:.5;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(70% 60% at 50% 20%,#000 20%,transparent 78%);
  -webkit-mask-image:radial-gradient(70% 60% at 50% 20%,#000 20%,transparent 78%);
}
.bg-grain{
  position:absolute;inset:0;opacity:.16;pointer-events:none;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='2'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)' opacity='.5'/%3E%3C/svg%3E");
}

/* ---------- 通用 ---------- */
.kicker{
  font-size:12px;letter-spacing:.24em;font-weight:700;color:var(--cyan);
  text-transform:uppercase;margin-bottom:14px;
}
.kicker.dark{color:var(--blue)}
h1,h2,h3{line-height:1.16;letter-spacing:-.02em;font-weight:800}
h2{font-size:clamp(28px,3.6vw,44px)}
h2.dark{color:var(--paper-ink)}
.sec-head{max-width:820px;margin:0 auto 46px;text-align:center;padding:0 22px}
.sec-sub{color:var(--muted);margin-top:14px;font-size:16px}
.sec-sub.dark{color:var(--paper-muted)}
section{position:relative;padding:96px 22px}
.btn{
  display:inline-flex;align-items:center;gap:9px;justify-content:center;
  border-radius:12px;font-weight:700;letter-spacing:.01em;
  padding:12px 22px;font-size:15px;position:relative;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s;
  border:1px solid transparent;white-space:nowrap;
}
.btn:active{transform:translateY(1px) scale(.99)}
.btn-primary{
  background:var(--grad);color:#fff;
  box-shadow:0 8px 26px rgba(11,84,249,.42),inset 0 1px 0 rgba(255,255,255,.28);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 34px rgba(11,84,249,.55),inset 0 1px 0 rgba(255,255,255,.3)}
.btn-ghost{border-color:var(--line-2);color:var(--text);background:rgba(255,255,255,.04)}
.btn-ghost:hover{border-color:var(--cyan);color:var(--cyan);background:rgba(1,173,253,.08);transform:translateY(-2px)}
.btn-lg{padding:15px 28px;font-size:16px;border-radius:14px}
.btn-sm{padding:8px 16px;font-size:13.5px;border-radius:10px}
.btn-block{width:100%}
.arr{transition:transform .18s}
.btn:hover .arr{transform:translateX(4px)}
kbd{
  font-family:var(--mono);font-size:12px;padding:2px 7px;border-radius:6px;
  background:rgba(255,255,255,.09);border:1px solid var(--line-2);border-bottom-width:2px;
}

/* ---------- 入场 ---------- */
.js .reveal{opacity:0;transform:translateY(26px);transition:opacity .7s cubic-bezier(.2,.7,.2,1),transform .7s cubic-bezier(.2,.7,.2,1)}
.js .reveal.in{opacity:1;transform:none}
.d1{transition-delay:.08s}.d2{transition-delay:.16s}.d3{transition-delay:.24s}.d4{transition-delay:.32s}

/* ---------- 导航 ---------- */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:60;height:var(--nav-h);
  display:flex;align-items:center;gap:26px;padding:0 clamp(16px,3vw,36px);
  transition:background .3s,border-color .3s,backdrop-filter .3s;
  border-bottom:1px solid transparent;
}
.nav.scrolled{
  background:rgba(7,6,26,.72);backdrop-filter:blur(18px) saturate(1.4);
  -webkit-backdrop-filter:blur(18px) saturate(1.4);
  border-bottom-color:var(--line);
}
.nav-brand{display:flex;align-items:center;gap:10px;font-weight:800}
.nav-brand img{border-radius:8px;box-shadow:0 3px 12px rgba(11,84,249,.5)}
.wordmark{font-size:19px;letter-spacing:-.02em}
.nav-ver{
  font-family:var(--mono);font-size:11px;color:var(--cyan);
  border:1px solid rgba(1,173,253,.4);background:rgba(1,173,253,.1);
  padding:2px 7px;border-radius:999px;
}
.nav-links{display:flex;gap:4px;margin-left:auto}
.nav-links a{
  padding:8px 13px;border-radius:9px;font-size:14px;color:var(--muted);font-weight:600;
  transition:color .18s,background .18s;position:relative;
}
.nav-links a:hover{color:var(--text);background:rgba(255,255,255,.06)}
.nav-links a.active{color:var(--cyan)}
.nav-links a.active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:2px;height:2px;border-radius:2px;background:var(--grad);
}
.nav-right{display:flex;align-items:center;gap:12px;margin-left:8px}
.nav-burger{display:none;width:38px;height:38px;border-radius:10px;border:1px solid var(--line-2);position:relative}
.nav-burger span{position:absolute;left:10px;right:10px;height:2px;background:var(--text);border-radius:2px;transition:transform .25s,top .25s}
.nav-burger span:first-child{top:14px}
.nav-burger span:last-child{top:21px}
.nav-burger[aria-expanded="true"] span:first-child{top:18px;transform:rotate(45deg)}
.nav-burger[aria-expanded="true"] span:last-child{top:18px;transform:rotate(-45deg)}

/* ---------- HERO ---------- */
.hero{padding:calc(var(--nav-h) + 74px) 22px 60px;overflow:hidden}
.hero-inner{
  max-width:1240px;margin:0 auto;display:grid;grid-template-columns:minmax(0,5fr) minmax(0,6fr);
  gap:clamp(28px,4vw,64px);align-items:center;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;font-size:13px;font-weight:700;color:var(--cyan);
  border:1px solid rgba(1,173,253,.35);background:rgba(1,173,253,.08);
  padding:6px 14px;border-radius:999px;margin-bottom:24px;letter-spacing:.04em;
}
.eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--green);box-shadow:0 0 0 0 rgba(47,212,131,.6);animation:pulse 2.4s infinite}
@keyframes pulse{70%{box-shadow:0 0 0 9px rgba(47,212,131,0)}100%{box-shadow:0 0 0 0 rgba(47,212,131,0)}}
.hero h1{font-size:clamp(40px,5.6vw,74px);font-weight:900;letter-spacing:-.035em}
.hero h1 em{
  font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
  filter:drop-shadow(0 4px 22px rgba(11,84,249,.45));
}
.lede{color:var(--muted);font-size:clamp(15px,1.35vw,17.5px);margin:22px 0 30px;max-width:52ch}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap}
.hero-meta{list-style:none;display:flex;gap:clamp(18px,3vw,40px);margin-top:36px;flex-wrap:wrap}
.hero-meta li{display:flex;flex-direction:column;gap:2px}
.hero-meta strong{font-size:16px;font-weight:800}
.hero-meta span{font-size:12.5px;color:var(--muted)}
.hero-meta li+li{border-left:1px solid var(--line);padding-left:clamp(18px,3vw,40px)}

.hero-stage{position:relative;perspective:1400px}
.stage-glow{
  position:absolute;inset:-8% -6%;border-radius:40px;filter:blur(46px);opacity:.65;
  background:conic-gradient(from 210deg at 50% 50%,rgba(1,173,253,.5),rgba(11,84,249,.55),rgba(111,20,251,.5),rgba(240,56,160,.35),rgba(1,173,253,.5));
  animation:spin 22s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg)}}
.mac-window{
  position:relative;border-radius:14px;overflow:hidden;background:#f5f6f8;
  border:1px solid rgba(255,255,255,.22);
  box-shadow:0 30px 80px rgba(3,2,20,.7),0 4px 18px rgba(3,2,20,.5);
}
.mw-bar{
  display:flex;align-items:center;gap:12px;height:38px;padding:0 14px;
  background:linear-gradient(180deg,#fbfbfd,#eceef2);border-bottom:1px solid #d8dbe2;
}
.mw-lights{display:flex;gap:7px}
.mw-lights i{width:11px;height:11px;border-radius:50%;display:block}
.mw-lights i:nth-child(1){background:#ff5f57}
.mw-lights i:nth-child(2){background:#febc2e}
.mw-lights i:nth-child(3){background:#28c840}
.mw-title{font-size:12.5px;color:#5b5f6b;font-weight:600;margin:0 auto}
.mw-side{width:52px}
.mac-window > img{width:100%;height:auto}
.tilt{transform:rotateX(var(--rx,0deg)) rotateY(var(--ry,0deg));transition:transform .25s ease-out;transform-style:preserve-3d}
.float-chip{
  position:absolute;display:flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:700;padding:9px 14px;border-radius:12px;
  background:rgba(12,10,40,.82);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  border:1px solid var(--line-2);box-shadow:0 10px 30px rgba(3,2,20,.6);
  animation:bob 6s ease-in-out infinite;
}
.chip-a{left:-4%;top:12%;color:var(--cyan)}
.chip-b{right:-3%;top:44%;color:var(--magenta);animation-delay:-2s}
.chip-c{left:6%;bottom:-5%;color:var(--green);animation-delay:-4s}
@keyframes bob{50%{transform:translateY(-9px)}}

.zipper{height:26px;margin:64px auto 0;max-width:1240px;position:relative;overflow:hidden;opacity:.85}
.zipper::before,.zipper::after{
  content:"";position:absolute;left:0;right:0;height:3px;border-radius:3px;
  background:repeating-linear-gradient(90deg,var(--cyan) 0 10px,transparent 10px 20px);
}
.zipper::before{top:6px}
.zipper::after{top:15px;background:repeating-linear-gradient(90deg,transparent 0 10px,var(--violet) 10px 20px)}
.zipper span{
  position:absolute;top:0;bottom:0;width:70px;border-radius:8px;
  background:var(--grad);box-shadow:0 0 24px rgba(1,173,253,.8);
  animation:zip 7s cubic-bezier(.6,.05,.3,.95) infinite;
}
@keyframes zip{0%{left:-80px}55%{left:calc(100% + 10px)}100%{left:calc(100% + 10px)}}

/* ---------- marquee ---------- */
.marquee-sec{padding:26px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:rgba(255,255,255,.02)}
.marquee{overflow:hidden;mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);-webkit-mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent)}
.marquee-track{display:flex;gap:14px;width:max-content;animation:scrollx 34s linear infinite;padding:4px 0}
.marquee:hover .marquee-track{animation-play-state:paused}
@keyframes scrollx{to{transform:translateX(-50%)}}
.fmt{
  display:inline-flex;align-items:baseline;gap:9px;white-space:nowrap;
  border:1px solid var(--line-2);border-radius:999px;padding:8px 18px;font-size:13px;color:var(--muted);
  background:rgba(255,255,255,.03);
}
.fmt b{color:var(--text);font-size:14px;letter-spacing:.06em}

/* ---------- DEMO ---------- */
.demo-sec{padding-top:110px}
.demo-wrap{
  max-width:1240px;margin:0 auto;display:grid;grid-template-columns:minmax(0,7fr) minmax(0,4fr);
  gap:22px;align-items:stretch;
}
.demo-app{display:flex;flex-direction:column;background:#f7f8fa;color:#20222b;border-color:rgba(255,255,255,.3)}
.demo-toolbar{
  display:flex;align-items:center;gap:10px;padding:9px 12px;background:#f7f8fa;border-bottom:1px solid #dce1e8;
}
.tb-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  width:30px;height:28px;border-radius:8px;border:1px solid #dce1e8;background:#fff;color:#4a4e5a;
  transition:background .15s,border-color .15s,color .15s;
}
.tb-btn:hover{border-color:var(--blue);color:var(--blue)}
.tb-btn:disabled{opacity:.4;cursor:default}
.tb-text{width:auto;padding:0 12px;font-size:12.5px;font-weight:700}
.demo-crumb{display:flex;align-items:center;gap:4px;font-size:12.5px;color:#5b5f6b;min-width:0;flex:1;overflow:hidden}
.demo-crumb button{padding:3px 8px;border-radius:7px;font-size:12.5px;color:#3c404c;font-weight:600;white-space:nowrap}
.demo-crumb button:hover{background:#e6efff;color:var(--blue)}
.demo-crumb .sep{color:#b6bac4}
.demo-search{display:flex;align-items:center;gap:6px;background:#fff;border:1px solid #dce1e8;border-radius:8px;padding:5px 9px;color:#8a8e99}
.demo-search input{border:0;outline:0;background:none;font:inherit;font-size:12.5px;width:86px;color:#20222b}
.demo-view{display:flex;background:#e8eaef;border-radius:8px;padding:2px}
.demo-view button{font-size:12px;font-weight:700;padding:4px 11px;border-radius:6px;color:#5b5f6b}
.demo-view button.on{background:#fff;color:var(--blue);box-shadow:0 1px 4px rgba(20,22,40,.18)}
.demo-body{display:flex;min-height:340px;flex:1}
.demo-side{
  width:158px;flex:none;background:#eef0f4;border-right:1px solid #dce1e8;padding:10px 8px;overflow:auto;
}
.demo-side .tree-node{margin:1px 0}
.demo-side button{
  display:flex;align-items:center;gap:7px;width:100%;text-align:left;
  font-size:12.5px;padding:5px 8px;border-radius:7px;color:#3c404c;font-weight:600;
}
.demo-side button:hover{background:#e2e6ee}
.demo-side button.on{background:var(--blue);color:#fff}
.demo-side img{width:15px;height:15px;flex:none}
.demo-side .tw{width:0;height:0;flex:none}
.demo-side .indent{display:inline-block}
.demo-files{flex:1;overflow:auto;padding:6px;outline:none;position:relative;background:#fff}
.demo-files:focus-visible{box-shadow:inset 0 0 0 2px var(--blue)}
.frow{
  display:grid;grid-template-columns:22px minmax(0,1fr) 74px 74px 60px;gap:8px;align-items:center;
  padding:7px 10px;border-radius:8px;font-size:13px;cursor:grab;user-select:none;-webkit-user-select:none;
  border:1px solid transparent;
}
.frow:hover{background:#f0f4fb}
.frow.sel{background:#e6efff;border-color:rgba(11,84,249,.35)}
.frow.dragging{opacity:.4}
.frow .fi{width:18px;height:18px;display:block}
.frow .fn{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-weight:600;color:#20222b}
.frow .fs,.frow .fc,.frow .fp{font-size:11.5px;color:#7a7e89;text-align:right;font-variant-numeric:tabular-nums}
.fhead{
  display:grid;grid-template-columns:22px minmax(0,1fr) 74px 74px 60px;gap:8px;
  padding:6px 10px;font-size:11px;color:#8a8e99;font-weight:700;border-bottom:1px solid #e6e8ee;margin-bottom:4px;
}
.fhead span:nth-child(n+3){text-align:right}
.demo-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(92px,1fr));gap:10px;padding:10px}
.gcell{
  display:flex;flex-direction:column;align-items:center;gap:7px;padding:12px 6px;border-radius:10px;
  cursor:grab;user-select:none;-webkit-user-select:none;border:1px solid transparent;text-align:center;
}
.gcell:hover{background:#f0f4fb}
.gcell.sel{background:#e6efff;border-color:rgba(11,84,249,.35)}
.gcell img{width:44px;height:44px}
.gcell span{font-size:11.5px;font-weight:600;color:#3c404c;line-height:1.3;word-break:break-all;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.demo-status{
  display:flex;align-items:center;gap:12px;padding:8px 12px;border-top:1px solid #dce1e8;background:#f7f8fa;
  font-size:12px;color:#5b5f6b;
}
.demo-status>span:first-child{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.demo-progress{width:130px;height:6px;border-radius:4px;background:#e2e5ec;overflow:hidden;flex:none}
.demo-progress i{display:block;height:100%;width:0;background:var(--grad);transition:width .12s linear}
.demo-desk{
  display:flex;flex-direction:column;border-radius:14px;overflow:hidden;
  border:1px solid var(--line-2);background:linear-gradient(180deg,rgba(26,23,71,.85),rgba(10,8,36,.9));
  box-shadow:0 20px 60px rgba(3,2,20,.55);
}
.desk-head{
  display:flex;align-items:center;gap:9px;padding:11px 14px;font-size:13px;font-weight:700;color:var(--cool);
  border-bottom:1px solid var(--line);background:rgba(255,255,255,.04);
}
.desk-reset{margin-left:auto;font-size:11.5px;color:var(--muted);border:1px solid var(--line-2);padding:3px 10px;border-radius:7px}
.desk-reset:hover{color:var(--red);border-color:var(--red)}
.desk-drop{flex:1;position:relative;padding:14px;min-height:280px;transition:background .2s,box-shadow .2s}
.desk-drop.hot{background:rgba(1,173,253,.1);box-shadow:inset 0 0 0 2px var(--cyan)}
.desk-hint{
  position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;
  color:var(--muted);text-align:center;pointer-events:none;padding:20px;
}
.desk-hint p{font-weight:700;color:var(--cool);font-size:14px}
.desk-hint span{font-size:12px}
.desk-hint svg{color:var(--cyan);animation:bob 3s ease-in-out infinite}
.desk-items{display:flex;flex-wrap:wrap;gap:12px;align-content:flex-start;position:relative}
.desk-item{
  width:82px;display:flex;flex-direction:column;align-items:center;gap:6px;text-align:center;
  animation:pop .38s cubic-bezier(.2,1.4,.4,1);
}
.desk-item img{width:44px;height:44px;filter:drop-shadow(0 6px 14px rgba(0,0,0,.5))}
.desk-item span{font-size:11px;color:var(--cool);line-height:1.3;word-break:break-all;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
@keyframes pop{from{transform:scale(.4);opacity:0}}
.desk-log{
  padding:9px 14px;font-family:var(--mono);font-size:11px;color:var(--cyan);
  border-top:1px solid var(--line);background:rgba(0,0,0,.3);min-height:34px;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.demo-note{max-width:1240px;margin:18px auto 0;color:var(--muted);font-size:13px;text-align:center}
.drag-ghost{
  position:fixed;z-index:90;pointer-events:none;display:flex;align-items:center;gap:8px;
  background:rgba(12,10,40,.92);border:1px solid var(--cyan);border-radius:10px;padding:8px 13px;
  font-size:12.5px;font-weight:700;color:var(--cool);box-shadow:0 14px 40px rgba(0,0,0,.6);
  transform:translate(-50%,-120%);
}
.drag-ghost img{width:22px;height:22px}
.drag-ghost .cnt{background:var(--blue);color:#fff;border-radius:999px;font-size:11px;padding:1px 8px}

/* ---------- FEATURES ---------- */
.features{padding-top:120px}
.feat-grid{max-width:1240px;margin:0 auto;display:grid;grid-template-columns:minmax(0,4fr) minmax(0,7fr);gap:clamp(28px,4vw,70px)}
.feat-sticky{position:sticky;top:calc(var(--nav-h) + 40px);align-self:start}
.feat-sticky h2{margin-bottom:18px}
.feat-sticky>p{color:var(--muted);font-size:15.5px}
.feat-points{list-style:none;margin:26px 0 30px;display:flex;flex-direction:column;gap:12px}
.feat-points li{display:flex;align-items:center;gap:11px;font-size:14.5px;font-weight:600}
.feat-points i{width:9px;height:9px;border-radius:3px;background:var(--c);box-shadow:0 0 14px var(--c);flex:none}
.feat-cards{display:flex;flex-direction:column;gap:26px}
.feat-card{
  border:1px solid var(--line);border-radius:var(--radius);padding:26px;
  background:linear-gradient(160deg,rgba(255,255,255,.055),rgba(255,255,255,.015));
  position:relative;overflow:hidden;transition:border-color .25s,transform .25s;
}
.feat-card::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--tint);opacity:.9;
}
.feat-card::after{
  content:"";position:absolute;right:-70px;top:-70px;width:220px;height:220px;border-radius:50%;
  background:radial-gradient(circle,var(--tint),transparent 68%);opacity:.14;filter:blur(10px);pointer-events:none;
}
.feat-card:hover{border-color:var(--line-2);transform:translateY(-3px)}
.fc-head{display:flex;align-items:baseline;gap:14px;margin-bottom:10px}
.fc-num{font-family:var(--mono);font-size:13px;color:var(--tint);font-weight:700}
.fc-head h3{font-size:21px}
.feat-card>p{color:var(--muted);font-size:14.5px;margin-bottom:18px}
.fc-shot{border-radius:12px;overflow:hidden;border:1px solid var(--line-2);box-shadow:0 16px 44px rgba(3,2,20,.5)}
.fc-shot img{width:100%;transition:transform .5s ease}
.feat-card:hover .fc-shot img{transform:scale(1.02)}
.fc-shot-sm img{max-height:240px;object-fit:cover;object-position:top}

/* ---------- FORMATS (light) ---------- */
.formats{background:var(--paper);color:var(--paper-ink);border-radius:34px 34px 0 0;margin-top:40px}
.formats::before{
  content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;opacity:.5;
  background:radial-gradient(60% 40% at 80% 0%,rgba(11,84,249,.08),transparent 70%),radial-gradient(50% 40% at 10% 100%,rgba(111,20,251,.07),transparent 70%);
}
.fmt-table-wrap{max-width:1100px;margin:0 auto;overflow-x:auto;border-radius:16px;border:1px solid #ddd6c8;background:#fffdf8;box-shadow:0 18px 50px rgba(60,50,20,.12)}
.fmt-table{width:100%;border-collapse:collapse;font-size:14px;min-width:760px}
.fmt-table th,.fmt-table td{padding:13px 16px;text-align:left;border-bottom:1px solid #eee7da;vertical-align:top}
.fmt-table thead th{
  font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--paper-muted);
  background:var(--paper-2);position:sticky;top:0;
}
.fmt-table tbody th{font-weight:800;color:var(--paper-ink);white-space:nowrap}
.fmt-table tbody tr:last-child th,.fmt-table tbody tr:last-child td{border-bottom:0}
.fmt-table tbody tr:hover{background:#f6f2e8}
.fmt-table td.yes{color:#0a7a4b;font-weight:700}
.fmt-table td.no{color:#b3403f;font-weight:700}
.fmt-table td.na{color:#a09a8c}
.fmt-table td:last-child{color:var(--paper-muted);font-size:13px}
.fmt-notes{max-width:1100px;margin:26px auto 0;display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.fn-card{background:#fffdf8;border:1px solid #ddd6c8;border-radius:14px;padding:20px}
.fn-card h4{font-size:15.5px;margin-bottom:8px;color:var(--paper-ink)}
.fn-card p{font-size:13.5px;color:var(--paper-muted)}

/* ---------- DOWNLOAD ---------- */
.download{padding-top:110px}
.dl-card{
  max-width:1100px;margin:0 auto;display:grid;grid-template-columns:minmax(0,7fr) minmax(0,4fr);gap:34px;
  border:1px solid var(--line-2);border-radius:24px;padding:clamp(24px,3.4vw,44px);
  background:
    radial-gradient(70% 120% at 0% 0%,rgba(11,84,249,.22),transparent 60%),
    radial-gradient(60% 120% at 100% 100%,rgba(111,20,251,.2),transparent 60%),
    rgba(255,255,255,.04);
  box-shadow:0 30px 80px rgba(3,2,20,.5);align-items:center;
}
.dl-left{display:flex;gap:22px;align-items:flex-start}
.dl-icon{border-radius:22px;box-shadow:0 14px 40px rgba(11,84,249,.5);flex:none}
.dl-left h2{font-size:clamp(24px,2.6vw,32px)}
.dl-sub{color:var(--muted);margin:8px 0 16px;font-size:14.5px}
.dl-badges{display:flex;gap:9px;flex-wrap:wrap}
.badge{
  display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:700;
  border:1px solid var(--line-2);border-radius:999px;padding:5px 12px;color:var(--muted);
}
.badge.ok{color:var(--green);border-color:rgba(47,212,131,.45);background:rgba(47,212,131,.08)}
.dl-right{display:flex;flex-direction:column;gap:14px}
.sha{
  display:flex;align-items:center;gap:10px;text-align:left;
  border:1px solid var(--line);border-radius:12px;padding:10px 13px;background:rgba(0,0,0,.3);
  transition:border-color .2s;min-width:0;
}
.sha:hover{border-color:var(--cyan)}
.sha-label{font-size:10.5px;letter-spacing:.1em;color:var(--muted);font-weight:800;flex:none}
.sha code{font-family:var(--mono);font-size:10.5px;color:var(--cool);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;flex:1;min-width:0}
.sha-copy{flex:none;font-size:11.5px;font-weight:700;color:var(--cyan)}
.dl-steps{
  list-style:none;max-width:1100px;margin:26px auto 0;display:grid;grid-template-columns:repeat(3,1fr);gap:18px;
}
.dl-steps li{display:flex;gap:13px;align-items:flex-start;border:1px solid var(--line);border-radius:14px;padding:16px 18px;background:rgba(255,255,255,.03)}
.dl-steps b{
  flex:none;width:26px;height:26px;border-radius:9px;display:grid;place-items:center;
  background:var(--grad);color:#fff;font-size:13px;box-shadow:0 6px 16px rgba(11,84,249,.4);
}
.dl-steps span{font-size:13.5px;color:var(--muted)}

/* ---------- CHANGELOG ---------- */
.cl-list{max-width:880px;margin:0 auto;position:relative;padding-left:26px}
.cl-list::before{content:"";position:absolute;left:7px;top:6px;bottom:6px;width:2px;background:linear-gradient(180deg,var(--cyan),var(--violet),transparent)}
.cl-item{position:relative;padding:0 0 40px 22px}
.cl-item::before{
  content:"";position:absolute;left:-26px;top:7px;width:16px;height:16px;border-radius:50%;
  background:var(--ink);border:3px solid var(--blue);box-shadow:0 0 16px rgba(11,84,249,.7);
}
.cl-item:first-child::before{border-color:var(--cyan);box-shadow:0 0 18px rgba(1,173,253,.8)}
.cl-tag{display:flex;align-items:center;gap:12px;margin-bottom:12px;flex-wrap:wrap}
.cl-ver{font-family:var(--mono);font-size:19px;font-weight:800}
.cl-date{font-size:12.5px;color:var(--muted);font-family:var(--mono)}
.cl-pill{font-size:11px;font-weight:800;padding:3px 10px;border-radius:999px;border:1px solid var(--line-2);color:var(--muted)}
.cl-pill.now{color:var(--green);border-color:rgba(47,212,131,.5);background:rgba(47,212,131,.1)}
.cl-item ul{list-style:none;display:flex;flex-direction:column;gap:9px}
.cl-item li{position:relative;padding-left:18px;color:var(--muted);font-size:14.5px}
.cl-item li::before{content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:2px;background:var(--grad)}
.cl-item code{font-family:var(--mono);font-size:12.5px;background:rgba(255,255,255,.08);padding:1px 6px;border-radius:5px;color:var(--cool)}

/* ---------- FAQ ---------- */
.faq-list{max-width:880px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.faq-item{border:1px solid var(--line);border-radius:14px;background:rgba(255,255,255,.035);overflow:hidden;transition:border-color .2s}
.faq-item[open]{border-color:rgba(1,173,253,.4)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;gap:14px;
  padding:17px 20px;font-weight:700;font-size:15.5px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-x{margin-left:auto;position:relative;width:16px;height:16px;flex:none}
.faq-x::before,.faq-x::after{content:"";position:absolute;background:var(--cyan);border-radius:2px;transition:transform .25s}
.faq-x::before{left:0;right:0;top:7px;height:2px}
.faq-x::after{top:0;bottom:0;left:7px;width:2px}
.faq-item[open] .faq-x::after{transform:scaleY(0)}
.faq-a{padding:0 20px 18px;color:var(--muted);font-size:14.5px}

/* ---------- FOOTER ---------- */
.footer{border-top:1px solid var(--line);background:rgba(0,0,0,.35);padding:44px 22px}
.foot-inner{max-width:1240px;margin:0 auto;display:flex;gap:34px;align-items:flex-start;flex-wrap:wrap}
.foot-brand{display:flex;gap:13px;align-items:center}
.foot-brand img{border-radius:9px}
.foot-brand p{font-size:12.5px;color:var(--muted)}
.foot-links{display:flex;gap:20px;flex-wrap:wrap;margin-left:auto;font-size:13.5px;color:var(--muted);font-weight:600}
.foot-links a:hover{color:var(--cyan)}
.foot-legal{width:100%;font-size:12px;color:#6f739b;border-top:1px solid var(--line);padding-top:20px}

/* ---------- 响应式 ---------- */
@media (max-width:1080px){
  .hero-inner{grid-template-columns:minmax(0,1fr);gap:52px}
  .hero-stage{max-width:720px;margin:0 auto;width:100%}
  .feat-grid{grid-template-columns:minmax(0,1fr)}
  .feat-sticky{position:static}
  .demo-wrap{grid-template-columns:minmax(0,1fr)}
  .demo-desk{min-height:300px}
  .dl-card{grid-template-columns:minmax(0,1fr)}
  .fmt-notes{grid-template-columns:1fr}
  .dl-steps{grid-template-columns:1fr}
}
@media (max-width:860px){
  .nav-links{
    position:fixed;top:var(--nav-h);left:0;right:0;flex-direction:column;gap:2px;
    background:rgba(7,6,26,.96);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
    padding:14px 18px 20px;border-bottom:1px solid var(--line);
    transform:translateY(-12px);opacity:0;pointer-events:none;transition:opacity .22s,transform .22s;
  }
  .nav-links.open{transform:none;opacity:1;pointer-events:auto}
  .nav-links a{padding:12px 10px;font-size:15px}
  .nav-burger{display:block}
  section{padding:72px 18px}
  .hero{padding-top:calc(var(--nav-h) + 48px)}
  .chip-b{right:0}
  .chip-a{left:0}
  .demo-side{width:120px}
  .frow,.fhead{grid-template-columns:22px minmax(0,1fr) 64px}
  .frow .fc,.frow .fp,.fhead span:nth-child(4),.fhead span:nth-child(5){display:none}
}
@media (max-width:620px){
  .hero-meta li+li{border-left:0;padding-left:0}
  .hero-meta{gap:18px}
  .demo-body{flex-direction:column}
  .demo-side{width:100%;display:flex;gap:4px;overflow-x:auto;border-right:0;border-bottom:1px solid #dce1e8;padding:8px}
  .demo-side .tree-node{margin:0}
  .demo-side button{white-space:nowrap;width:auto}
  .demo-side .indent{display:none}
  .demo-search input{width:60px}
  .float-chip{font-size:11px;padding:7px 10px}
  .dl-left{flex-direction:column}
  .foot-links{margin-left:0}
}

/* ---------- 降低动效 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001s!important;animation-iteration-count:1!important;transition-duration:.001s!important}
  .reveal{opacity:1;transform:none}
  .marquee-track{animation:none}
}