/* AimCram · 官网样式
   设计方向：深空蓝黑底、冷色渐变、网格与玻璃面板；用青色扫描高亮延续「涂抹」的产品记忆点。 */

:root{
  --bg:#06080f;
  --bg-2:#0a0f1a;
  --surface:#0b111d;
  --surface-2:#0f1729;
  --panel:rgba(255,255,255,.035);
  --panel-2:rgba(255,255,255,.06);
  --card:rgba(255,255,255,.035);
  --ink:#eef1f8;
  --ink-2:#c2c9d8;
  --muted:#8b93a7;
  --line:rgba(255,255,255,.11);
  --line-2:rgba(255,255,255,.06);
  --blue:#4c6fff;
  --blue-2:#6b86ff;
  --cyan:#5ee7f7;
  --violet:#a78bfa;
  --yellow:#ffd84d;
  --red:#ff6b6b;
  --radius:18px;
  --max:1120px;
  --sans:-apple-system,BlinkMacSystemFont,"SF Pro Display","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --mono:"SF Mono",ui-monospace,Menlo,Consolas,monospace;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;color:var(--ink);
  font:16px/1.7 var(--sans);
  background:
    radial-gradient(900px 620px at 82% -10%,rgba(99,102,241,.26),transparent 62%),
    radial-gradient(760px 540px at 8% 4%,rgba(34,211,238,.13),transparent 60%),
    radial-gradient(1000px 700px at 50% 108%,rgba(76,111,255,.12),transparent 65%),
    var(--bg);
  -webkit-font-smoothing:antialiased;
}
/* 细网格 + 顶部渐隐 */
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background-image:
    linear-gradient(rgba(255,255,255,.032) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.032) 1px,transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(ellipse 90% 70% at 50% 0%,#000 10%,transparent 78%);
  mask-image:radial-gradient(ellipse 90% 70% at 50% 0%,#000 10%,transparent 78%);
}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3{font-family:var(--sans);font-weight:650;letter-spacing:-.03em;margin:0}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
code{font-family:var(--mono);font-size:.86em;background:rgba(94,231,247,.09);color:#9deffa;padding:.12em .4em;border-radius:5px}

.wrap{width:min(var(--max),calc(100% - 48px));margin-inline:auto;position:relative}
.skip{
  position:absolute;left:16px;top:-60px;z-index:100;background:var(--ink);color:var(--bg);
  padding:10px 16px;border-radius:8px;transition:top .2s;
}
.skip:focus{top:12px}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:6px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:999px;font-weight:600;letter-spacing:.01em;
  transition:transform .16s ease,background .16s,border-color .16s,color .16s,box-shadow .16s;
  white-space:nowrap;
}
.btn svg{width:17px;height:17px}
.btn-primary{
  background:#3f5fe0;color:#fff;
  box-shadow:0 0 0 1px rgba(140,165,255,.35) inset,0 12px 30px -12px rgba(63,95,224,.9),0 0 28px -12px rgba(94,231,247,.5);
}
.btn-primary:hover{background:#3552d4;transform:translateY(-1px);box-shadow:0 0 0 1px rgba(160,190,255,.5) inset,0 16px 36px -12px rgba(53,82,212,.95),0 0 36px -8px rgba(94,231,247,.55)}
.btn-ghost{border:1px solid rgba(255,255,255,.16);background:rgba(255,255,255,.02);color:var(--ink)}
.btn-ghost:hover{border-color:rgba(94,231,247,.5);background:rgba(94,231,247,.06);color:#dffaff}
.btn-sm{padding:8px 16px;font-size:14px}
.btn-lg{padding:14px 24px;font-size:15.5px}
.btn-paper{
  background:linear-gradient(135deg,#5ee7f7,#a5f3ff);color:#04121c;
  box-shadow:0 14px 34px -16px rgba(94,231,247,.9);
}
.btn-paper:hover{background:linear-gradient(135deg,#7deefb,#c2f8ff);transform:translateY(-1px)}
.btn-line{border:1px solid rgba(255,255,255,.25);color:#fff}
.btn-line:hover{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.5)}

/* ---------- 头部 ---------- */
.site-head{
  position:sticky;top:0;z-index:60;
  background:rgba(6,8,15,.7);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid transparent;transition:border-color .2s,background .2s;
}
.site-head.scrolled{border-bottom-color:var(--line-2);background:rgba(6,8,15,.9)}
.head-in{display:flex;align-items:center;gap:32px;height:68px}
.brand{display:flex;align-items:center;gap:9px;font-size:19px;font-weight:650;letter-spacing:-.02em}
.brand-mark{width:28px;height:28px;color:var(--cyan)}
.nav{display:flex;gap:26px;margin-left:auto;font-size:14.5px;color:var(--ink-2)}
.nav a{position:relative;padding:4px 0;transition:color .16s}
.nav a::after{
  content:"";position:absolute;left:0;right:100%;bottom:-2px;height:1px;
  background:linear-gradient(90deg,var(--cyan),transparent);transition:right .22s ease;
}
.nav a:hover{color:#fff}
.nav a:hover::after,.nav a:focus-visible::after{right:0}
.head-cta{display:flex;align-items:center;gap:8px;margin-left:4px}
.nav-toggle{display:none;width:38px;height:38px;border:1px solid var(--line);border-radius:10px;align-items:center;justify-content:center}
.nav-toggle svg{width:20px;height:20px}

/* ---------- Hero ---------- */
.hero{padding:82px 0 96px;position:relative;overflow:hidden}
.hero::before{
  content:"";position:absolute;width:560px;height:560px;right:-120px;top:-160px;pointer-events:none;
  background:radial-gradient(circle,rgba(76,111,255,.3),transparent 62%);
  filter:blur(20px);opacity:.7;
}
.hero-grid{display:grid;grid-template-columns:1.02fr .98fr;gap:56px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;font-family:var(--mono);font-size:11.5px;
  letter-spacing:.16em;color:var(--cyan);text-transform:uppercase;font-weight:500;margin-bottom:22px;
}
.eb-dot{width:6px;height:6px;border-radius:50%;background:var(--cyan);box-shadow:0 0 0 4px rgba(94,231,247,.12),0 0 12px var(--cyan)}
.hero h1{font-size:clamp(38px,5.2vw,64px);line-height:1.1;letter-spacing:-.038em}
.hl{
  font-style:normal;position:relative;padding:0 2px;color:#fff;
  background:linear-gradient(transparent 62%,rgba(94,231,247,.3) 62%,rgba(94,231,247,.3) 96%,transparent 96%);
  box-decoration-break:clone;-webkit-box-decoration-break:clone;
}
.lede{margin-top:22px;max-width:34em;color:var(--ink-2);font-size:16.5px;line-height:1.82}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
.hero-meta{display:flex;flex-wrap:wrap;gap:8px 22px;margin-top:26px;font-size:13px;color:var(--muted)}
.hero-meta li{display:flex;align-items:center;gap:7px}
.hero-meta li::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--cyan);opacity:.7;box-shadow:0 0 8px rgba(94,231,247,.7)}

/* Hero 产品拼贴 */
.desk{position:relative;display:grid;grid-template-columns:1fr 1fr;gap:12px;isolation:isolate}
.desk.paper{
  grid-column:1/-1;transform:rotate(-.6deg);
  background:linear-gradient(165deg,rgba(17,24,41,.96),rgba(8,12,22,.98));
  border:1px solid rgba(120,150,255,.22);border-radius:16px;
  padding:26px 28px 22px;position:relative;overflow:hidden;
  box-shadow:0 40px 80px -40px rgba(0,0,0,.95),0 0 60px -24px rgba(76,111,255,.5),0 1px 0 rgba(255,255,255,.07) inset;
}
.desk.paper::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(94,231,247,.8),transparent);
}
.paper-head{display:flex;align-items:center;justify-content:space-between;gap:10px}
.pill{
  font-size:11.5px;color:#8fe6f3;background:rgba(94,231,247,.1);
  border:1px solid rgba(94,231,247,.22);border-radius:999px;padding:3px 10px;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.qnum{font-family:var(--mono);font-size:16px;color:var(--muted)}
.qstem{font-size:16px;line-height:1.85;margin-top:16px;color:var(--ink)}
.opts{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:18px}
.opts li{
  display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--ink-2);
  border:1px solid var(--line-2);border-radius:9px;padding:8px 10px;background:rgba(255,255,255,.025);
}
.opts li span{
  width:19px;height:19px;border-radius:50%;display:grid;place-items:center;
  font-size:11px;color:var(--muted);border:1px solid var(--line);
}
.opts li.picked{
  border-color:rgba(94,231,247,.45);background:rgba(94,231,247,.09);color:#c7f6fc;
  box-shadow:0 0 20px -10px rgba(94,231,247,.55);
}
.opts li.picked span{background:var(--cyan);border-color:var(--cyan);color:#04121c}
.paper-foot{display:flex;align-items:center;justify-content:space-between;margin-top:20px;padding-top:14px;border-top:1px solid var(--line-2)}
.tag{font-size:11.5px;color:var(--muted);border:1px solid var(--line);border-radius:5px;padding:1px 7px}
.pen-hint{display:flex;align-items:center;gap:7px;font-size:11.5px;color:var(--muted)}
.pen-hint i{width:8px;height:8px;border-radius:50%;background:var(--cyan);box-shadow:0 0 0 3px rgba(94,231,247,.14),0 0 10px var(--cyan)}

.note-card{
  position:relative;background:linear-gradient(160deg,rgba(20,28,48,.88),rgba(10,15,26,.92));
  border:1px solid rgba(255,255,255,.14);border-radius:13px;padding:14px 16px;
  box-shadow:0 24px 50px -28px rgba(0,0,0,.9),0 1px 0 rgba(255,255,255,.06) inset;
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  min-width:0;
}
.note-ai{transform:rotate(.8deg)}
.nc-head{display:flex;align-items:center;gap:7px;font-size:12px;color:var(--muted);margin-bottom:7px}
.ai-dot{width:7px;height:7px;border-radius:50%;background:#34d399;box-shadow:0 0 0 3px rgba(52,211,153,.14),0 0 10px rgba(52,211,153,.8)}
.note-ai p{font-size:12.5px;line-height:1.75;color:var(--ink-2)}
.note-gen{transform:rotate(-.8deg)}
.gen-line{display:flex;align-items:baseline;gap:5px;font-size:11.5px;color:var(--muted)}
.gen-line b{font-family:var(--mono);font-size:20px;color:#fff;font-weight:600}
.gen-line b+span{margin-right:6px}
.gen-bar{height:5px;border-radius:99px;background:rgba(255,255,255,.08);margin-top:8px;overflow:hidden}
.gen-bar i{display:block;height:100%;width:72%;border-radius:99px;background:linear-gradient(90deg,var(--cyan),var(--blue));box-shadow:0 0 12px rgba(94,231,247,.6)}
.nc-foot{margin-top:7px;font-size:11px;color:var(--muted)}
.desk-note{
  grid-column:1/-1;justify-self:start;font-family:var(--mono);font-size:10.5px;color:var(--muted);
  border:1px dashed rgba(255,255,255,.16);border-radius:99px;padding:4px 12px;background:rgba(6,8,15,.6);
}

mark.mk{color:inherit;border-radius:3px;padding:1px 2px;box-decoration-break:clone;-webkit-box-decoration-break:clone}
.mk-y{background:rgba(94,231,247,.22);box-shadow:0 0 18px -6px rgba(94,231,247,.5)}
.mk-b{background:rgba(167,139,250,.26)}

/* ---------- 特点条 ---------- */
.strip{border-block:1px solid var(--line-2);background:rgba(255,255,255,.02)}
.strip-in{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;padding:22px 0}
.strip-item{display:flex;flex-direction:column;gap:2px}
.strip-item b{font-size:14px;font-weight:600;color:#fff}
.strip-item span{font-size:12.5px;color:var(--muted)}

/* ---------- 通用 section ---------- */
.section{padding:96px 0;position:relative}
.section-alt{background:rgba(255,255,255,.018);border-block:1px solid var(--line-2)}
.sec-head{max-width:650px;margin-bottom:46px}
.sec-label{
  font-family:var(--mono);font-size:11.5px;letter-spacing:.14em;color:var(--cyan);
  text-transform:uppercase;margin-bottom:14px;
}
.sec-head h2{font-size:clamp(28px,3.4vw,42px);line-height:1.2;letter-spacing:-.035em}
.sec-sub{margin-top:14px;color:var(--muted);max-width:36em}
.sec-head.light .sec-label{color:rgba(94,231,247,.85)}

/* ---------- Bento ---------- */
.bento{display:grid;grid-template-columns:repeat(6,1fr);gap:16px}
.card{
  grid-column:span 3;background:var(--panel);border:1px solid var(--line-2);
  border-radius:var(--radius);padding:24px 24px 22px;position:relative;overflow:hidden;
  transition:border-color .22s,box-shadow .22s,transform .22s,background .22s;
}
.card::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:0;transition:opacity .25s;
  background:radial-gradient(420px 220px at 20% 0%,rgba(76,111,255,.16),transparent 65%);
}
.card:hover{border-color:rgba(94,231,247,.28);background:rgba(255,255,255,.045);box-shadow:0 26px 60px -46px rgba(94,231,247,.5)}
.card:hover::after{opacity:1}
.card-lg{grid-row:span 2;padding:28px}
.card-wide{grid-column:span 6;padding:0}
.card-icon{
  width:38px;height:38px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(150deg,rgba(94,231,247,.14),rgba(76,111,255,.16));
  border:1px solid rgba(120,160,255,.2);color:#a8f0fa;margin-bottom:16px;
}
.card-icon svg{width:19px;height:19px}
.card h3{font-size:21px;letter-spacing:-.02em;margin-bottom:8px;color:#fff}
.card p{font-size:14px;line-height:1.78;color:var(--ink-2)}
.card-lg h3{font-size:24px}
.card-lg p{max-width:30em}
.card-demo{margin-top:24px;padding-top:18px;border-top:1px dashed var(--line)}
.mini-row{display:flex;align-items:center;gap:10px;margin-bottom:10px;font-size:11.5px;color:var(--muted)}
.mini-k{width:52px;flex:none}
.mini-bar{flex:1;height:5px;background:rgba(255,255,255,.07);border-radius:99px;overflow:hidden}
.mini-bar i{display:block;height:100%;border-radius:99px;background:linear-gradient(90deg,rgba(94,231,247,.85),rgba(76,111,255,.9))}
.mini-row:nth-child(2) .mini-bar i{opacity:.8}
.mini-row:nth-child(3) .mini-bar i{opacity:.65}
.mini-v{width:32px;text-align:right;flex:none}
.split{display:grid;grid-template-columns:1.15fr .85fr;min-height:100%}
.split-copy{padding:26px 28px}
.split-copy p{max-width:32em}
.swatch-demo{
  border-left:1px solid var(--line-2);
  background:
    radial-gradient(300px 180px at 30% 20%,rgba(94,231,247,.12),transparent 70%),
    linear-gradient(160deg,rgba(255,255,255,.04),rgba(255,255,255,.015));
  padding:26px;display:flex;flex-direction:column;justify-content:center;gap:16px;
}
.swatch-demo p{font-size:19px;line-height:1.9;color:#e9eefb}
.swatches{display:flex;gap:9px}
.swatches i{
  width:20px;height:20px;border-radius:50%;background:var(--c);
  border:2px solid rgba(6,8,15,.9);box-shadow:0 0 0 1px var(--line),0 0 16px -2px var(--c);
}
.swatches button{
  width:22px;height:22px;border-radius:50%;background:var(--c);
  border:2px solid rgba(6,8,15,.9);box-shadow:0 0 0 1px var(--line),0 0 14px -4px var(--c);
  padding:0;transition:transform .15s,box-shadow .15s;
}
.swatches button:hover,.swatches button[aria-pressed="true"]{transform:scale(1.16);box-shadow:0 0 0 1px rgba(255,255,255,.5),0 0 20px -2px var(--c)}

/* ---------- 流程 ---------- */
.flow{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.flow-step{display:flex;flex-direction:column;gap:16px;padding-top:22px;border-top:1px solid rgba(255,255,255,.18);position:relative}
.flow-step::before{
  content:"";position:absolute;left:0;top:-1px;width:56px;height:1px;
  background:linear-gradient(90deg,var(--cyan),transparent);
}
.flow-n{font-family:var(--mono);font-size:12px;color:var(--cyan)}
.flow-step h3{font-size:21px;margin-bottom:6px;color:#fff}
.flow-step p{font-size:14px;color:var(--ink-2);line-height:1.8}
.flow-visual{
  margin-top:auto;background:rgba(255,255,255,.03);border:1px solid var(--line-2);border-radius:12px;
  padding:14px;font-size:11.5px;color:var(--muted);
}
.file-row{display:flex;align-items:center;gap:9px;padding:7px 4px}
.file-row+.file-row{border-top:1px dashed var(--line-2)}
.file-ic{width:14px;height:14px;border:1.5px solid var(--muted);border-radius:3px;position:relative}
.file-ic::after{content:"";position:absolute;left:3px;top:4px;width:6px;height:1.5px;background:var(--muted);box-shadow:0 3px 0 var(--muted)}
.tree-row{display:flex;align-items:baseline;gap:8px}
.tree-row b{font-family:var(--mono);font-size:16px;color:#fff}
.tree-row span{color:var(--muted)}
.tree-row em{font-style:normal;margin-left:auto;color:#9deffa}
.tree-line{height:5px;background:rgba(255,255,255,.07);border-radius:99px;margin-top:12px;overflow:hidden}
.tree-line i{display:block;height:100%;background:linear-gradient(90deg,var(--cyan),var(--blue))}
.mini-tabs{display:flex;gap:12px;font-size:11.5px}
.mini-tabs b{color:#fff;border-bottom:1px solid var(--cyan);padding-bottom:2px}

/* ---------- 产品细节 ---------- */
.feature-row{display:grid;grid-template-columns:1fr 1.1fr;gap:64px;align-items:center;padding:34px 0 54px}
.feature-row+.feature-row{border-top:1px dashed var(--line);padding-top:64px}
.feature-row.reverse{grid-template-columns:1.1fr 1fr}
.feature-row.reverse .feature-copy{order:2}
.feature-row.reverse .mock{order:1}
.feature-copy h3{font-size:clamp(24px,2.6vw,32px);margin-bottom:12px;color:#fff}
.feature-copy p{color:var(--ink-2);max-width:30em}
.ticks{margin-top:20px;display:grid;gap:8px;font-size:13.5px;color:var(--ink-2)}
.ticks li{display:flex;align-items:center;gap:9px}
.ticks li::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--cyan);box-shadow:0 0 8px rgba(94,231,247,.8);flex:none}

.mock{
  background:linear-gradient(170deg,rgba(17,24,41,.96),rgba(9,13,23,.98));
  border:1px solid rgba(120,150,255,.2);border-radius:14px;
  box-shadow:0 40px 70px -46px rgba(0,0,0,.95),0 0 40px -26px rgba(76,111,255,.6);
  overflow:hidden;font-size:13px;
}
.mock-head{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:14px 18px;border-bottom:1px solid var(--line-2);background:rgba(255,255,255,.025);
}
.mock-head b{font-size:13.5px;color:#fff}
.mock-head span{font-family:var(--mono);font-size:11px;color:var(--muted)}
.mock-outline{padding-bottom:8px}
.ch-row{display:flex;align-items:center;gap:9px;padding:11px 18px;font-size:13px;border-bottom:1px solid var(--line-2);color:var(--ink-2)}
.ch-row em{font-style:normal;margin-left:auto;font-size:11.5px;color:var(--muted)}
.ch-arrow{color:var(--muted);font-size:10px;width:10px}
.ch-row.open{background:rgba(94,231,247,.06);color:#eaf9fc}
.sec-row{
  display:flex;align-items:center;gap:10px;padding:9px 18px 9px 40px;
  font-size:12.5px;color:var(--ink-2);border-bottom:1px solid var(--line-2);
}
.sec-row span{font-family:var(--mono);font-size:11px;color:var(--muted)}
.sec-row em{font-style:normal;margin-left:auto;font-size:11px;color:var(--muted)}
.mock-chat{padding-bottom:14px}
.chat-b{margin:12px 18px 0;font-size:13px;line-height:1.7}
.chat-b.u{
  margin-left:auto;max-width:78%;background:linear-gradient(135deg,#3f5fe0,#4463e6);color:#fff;
  border-radius:12px 12px 3px 12px;padding:9px 13px;font-size:12.5px;
  box-shadow:0 10px 24px -14px rgba(76,111,255,.9);
}
.chat-b.a{display:flex;gap:10px;align-items:flex-start}
.chat-av{
  flex:none;width:24px;height:24px;border-radius:7px;display:grid;place-items:center;
  background:rgba(94,231,247,.12);border:1px solid rgba(94,231,247,.25);
  color:#9deffa;font-size:10px;font-weight:700;
}
.chat-b.a p{background:rgba(255,255,255,.05);border-radius:12px 12px 12px 3px;padding:9px 13px;color:var(--ink-2);font-size:12.5px}
.chat-in{
  margin:16px 18px 0;border:1px solid var(--line);border-radius:99px;padding:8px 14px;
  font-size:11.5px;color:var(--muted);display:flex;align-items:center;justify-content:space-between;
}
.chat-in i{width:18px;height:18px;border-radius:50%;background:var(--blue);box-shadow:0 0 12px rgba(76,111,255,.8)}

/* ---------- 涂抹 demo ---------- */
.demo-sec{padding-top:20px}
.demo-card{
  display:grid;grid-template-columns:1fr 1.05fr;gap:48px;align-items:center;
  background:
    radial-gradient(600px 320px at 82% 10%,rgba(94,231,247,.14),transparent 60%),
    linear-gradient(160deg,rgba(18,26,46,.92),rgba(8,12,22,.96));
  border:1px solid rgba(120,160,255,.24);
  border-radius:24px;padding:44px 48px;position:relative;overflow:hidden;
  box-shadow:0 40px 90px -60px rgba(0,0,0,.95),0 0 60px -30px rgba(76,111,255,.5);
}
.demo-card::after{
  content:"";position:absolute;width:420px;height:420px;right:-140px;top:-180px;
  background:radial-gradient(circle,rgba(167,139,250,.2),transparent 62%);pointer-events:none;
}
.demo-copy .sec-label{color:rgba(94,231,247,.9)}
.demo-copy h2{font-size:clamp(26px,3vw,38px);color:#fff;margin-bottom:12px}
.demo-copy p{color:var(--ink-2);font-size:14.5px;max-width:30em}
.demo-sw{margin-top:22px}
.demo-sw button{border-color:#0a0f1a;box-shadow:0 0 0 1px rgba(255,255,255,.18),0 0 16px -4px var(--c)}
.demo-paper{
  background:linear-gradient(170deg,#0d1526,#0a101d);color:#e7edf9;
  border:1px solid rgba(255,255,255,.12);border-radius:12px;padding:26px 28px;
  box-shadow:0 26px 50px -30px rgba(0,0,0,.9),0 1px 0 rgba(255,255,255,.05) inset;
  transform:rotate(.5deg);
}
.demo-paper p{font-size:17px;line-height:2.05;color:#dfe6f4}
.demo-hint{margin-top:16px;font-size:11.5px;color:var(--muted);border-top:1px dashed var(--line);padding-top:10px}
.demo-paper mark{background:transparent;cursor:pointer;border-radius:3px;padding:1px 2px;color:inherit}

/* ---------- 适合谁 ---------- */
.aud-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.aud{border-top:1px solid rgba(255,255,255,.18);padding:18px 4px 0;display:flex;flex-direction:column;gap:6px;position:relative}
.aud::before{content:"";position:absolute;left:0;top:-1px;width:34px;height:1px;background:var(--cyan)}
.aud b{font-size:15px;color:#fff}
.aud span{font-size:12.5px;color:var(--muted);line-height:1.7}

/* ---------- 下载 ---------- */
.download{padding-top:20px;padding-bottom:96px}
.dl-card{
  background:
    radial-gradient(700px 400px at 76% 0%,rgba(94,231,247,.18),transparent 60%),
    radial-gradient(600px 420px at 10% 100%,rgba(167,139,250,.18),transparent 65%),
    linear-gradient(150deg,#0c1733,#11214d 60%,#152a63);
  border:1px solid rgba(120,160,255,.34);
  border-radius:26px;color:#fff;padding:52px 52px 48px;
  display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;
  position:relative;overflow:hidden;
  box-shadow:0 50px 100px -70px rgba(0,0,0,1),0 0 80px -40px rgba(76,111,255,.65);
}
.dl-card::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.14;
  background-image:linear-gradient(rgba(255,255,255,.55) 1px,transparent 1px);
  background-size:100% 30px;
  -webkit-mask-image:linear-gradient(#000,transparent 80%);
  mask-image:linear-gradient(#000,transparent 80%);
}
.dl-copy{position:relative;z-index:1}
.dl-card h2{font-size:clamp(30px,3.6vw,44px);color:#fff;margin-bottom:14px}
.dl-card p{color:rgba(226,235,255,.8);max-width:32em;font-size:14.5px}
.dl-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.dl-sub{display:block;font-size:12px;font-weight:400;color:rgba(4,18,28,.72);margin-top:1px}
.dl-note{margin-top:18px;font-size:11.5px;color:rgba(226,235,255,.6);line-height:1.7}
.dl-visual{position:relative;z-index:1}
.dl-win{
  background:linear-gradient(170deg,#111a2e,#0a101c);border:1px solid rgba(255,255,255,.14);
  border-radius:12px;overflow:hidden;color:var(--ink);
  box-shadow:0 40px 70px -34px rgba(0,0,0,.9),0 0 40px -22px rgba(94,231,247,.5);
  transform:rotate(-1deg);
}
.dl-bar{display:flex;gap:5px;padding:10px 12px;border-bottom:1px solid var(--line-2);background:rgba(255,255,255,.03)}
.dl-bar i{width:8px;height:8px;border-radius:50%;background:rgba(255,255,255,.18)}
.dl-bar i:first-child{background:rgba(255,107,107,.7)}
.dl-body{display:flex;min-height:190px}
.dl-side{width:92px;border-right:1px solid var(--line-2);padding:12px 10px;display:flex;flex-direction:column;gap:8px;font-size:10.5px;color:var(--muted)}
.dl-side span{padding:5px 8px;border-radius:6px}
.dl-side .on{background:rgba(94,231,247,.1);color:#9deffa;font-weight:600}
.dl-main{padding:16px 16px}
.dl-q{font-size:12.5px;line-height:1.7;color:var(--ink)}
.dl-q b{font-family:var(--mono);font-size:15px;margin-right:6px;color:var(--muted)}
.dl-o{
  display:flex;align-items:center;gap:8px;margin-top:9px;
  border:1px solid rgba(94,231,247,.4);background:rgba(94,231,247,.08);
  color:#c7f6fc;border-radius:7px;padding:7px 9px;font-size:11.5px;
}
.dl-o span{width:16px;height:16px;border-radius:50%;background:var(--cyan);color:#04121c;display:grid;place-items:center;font-size:9px}
.dl-o.dim{border-color:var(--line-2);background:rgba(255,255,255,.02);color:var(--muted)}
.dl-o.dim span{background:rgba(255,255,255,.12);color:var(--muted)}

/* ---------- FAQ ---------- */
.faq-wrap{display:grid;grid-template-columns:.8fr 1.2fr;gap:64px;align-items:start}
.faq-wrap .sec-head{margin-bottom:0;position:sticky;top:100px}
.faq details{border-top:1px solid var(--line-2)}
.faq details:last-child{border-bottom:1px solid var(--line-2)}
.faq summary{list-style:none;cursor:pointer;padding:18px 34px 18px 0;position:relative;font-size:15px;font-weight:600;color:#fff}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"+";position:absolute;right:4px;top:50%;transform:translateY(-50%);
  font-size:20px;font-weight:400;color:var(--muted);transition:transform .2s,color .2s;
}
.faq details[open] summary::after{content:"−";color:var(--cyan)}
.faq summary:hover{color:#dffaff}
.faq p{padding:0 34px 20px 0;font-size:14px;color:var(--ink-2);max-width:44em}

/* ---------- 页脚 ---------- */
.site-foot{border-top:1px solid var(--line-2);padding:36px 0 42px;background:rgba(255,255,255,.015)}
.foot-in{display:flex;align-items:flex-start;justify-content:space-between;gap:28px;flex-wrap:wrap}
.brand-name{font-size:18px;font-weight:650}
.foot-brand p{font-size:12.5px;color:var(--muted);margin-top:4px}
.foot-links{display:flex;gap:22px;font-size:13px;color:var(--ink-2)}
.foot-links a:hover{color:var(--cyan)}
.copy{font-size:12px;color:var(--muted);margin-left:auto}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .65s ease,transform .65s ease}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  .btn{transition:none}
}

/* ---------- 响应式 ---------- */
@media (max-width:1020px){
  .hero{padding:56px 0 76px}
  .hero-grid{grid-template-columns:1fr;gap:56px}
  .hero-copy{max-width:640px}
  .desk{margin:0 auto;width:min(560px,100%)}
  .feature-row,.feature-row.reverse{grid-template-columns:1fr;gap:28px}
  .feature-row.reverse .feature-copy{order:1}
  .feature-row.reverse .mock{order:2}
  .faq-wrap{grid-template-columns:1fr;gap:32px}
  .faq-wrap .sec-head{position:static}
  .demo-card{grid-template-columns:1fr;gap:30px;padding:36px}
  .aud-grid{grid-template-columns:1fr 1fr;gap:22px}
  .dl-card{grid-template-columns:1fr;gap:34px;padding:40px}
}

@media (max-width:820px){
  .nav{
    position:absolute;left:0;right:0;top:100%;margin:0;
    flex-direction:column;gap:0;background:#080c16;
    border-bottom:1px solid var(--line);padding:6px 24px 12px;display:none;
  }
  .nav.open{display:flex}
  .nav a{padding:12px 0;border-bottom:1px solid var(--line-2);font-size:15px}
  .nav a::after{display:none}
  .nav-toggle{display:inline-flex}
  .head-in{gap:16px}
  .section{padding:72px 0}
  .bento{grid-template-columns:1fr 1fr}
  .card,.card-lg{grid-column:span 1;grid-row:auto}
  .card-wide{grid-column:span 2}
  .split{grid-template-columns:1fr}
  .swatch-demo{border-left:0;border-top:1px solid var(--line-2)}
  .flow{grid-template-columns:1fr;gap:30px}
  .flow-step{padding-top:18px}
  .strip-in{grid-template-columns:1fr;gap:14px}
  .strip-item{flex-direction:row;justify-content:space-between;align-items:baseline;gap:12px}
  .strip-item b{font-size:13.5px}
}

@media (max-width:600px){
  .wrap{width:calc(100% - 32px)}
  .hero h1{font-size:clamp(32px,9vw,44px)}
  .lede{font-size:15px}
  .desk{grid-template-columns:1fr;width:100%}
  .desk.paper{transform:none;padding:22px 20px 18px}
  .note-card{transform:none}
  .desk-note{order:-1}
  .opts{grid-template-columns:1fr}
  .bento{grid-template-columns:1fr}
  .card-wide{grid-column:span 1}
  .aud-grid{grid-template-columns:1fr}
  .demo-card{padding:26px 22px;border-radius:18px}
  .demo-paper{padding:20px;transform:none}
  .dl-card{padding:30px 22px;border-radius:20px}
  .dl-actions .btn{width:100%}
  .foot-in{flex-direction:column;gap:16px}
  .copy{margin-left:0}
  .sec-head h2{font-size:27px}
  .faq summary{font-size:14px}
}

/* ---------- 文档页（隐私政策 / 技术支持） ---------- */
.page-hero{padding:64px 0 40px;border-bottom:1px solid var(--line-2);position:relative;overflow:hidden}
.page-hero::before{
  content:"";position:absolute;width:520px;height:320px;right:-80px;top:-120px;pointer-events:none;
  background:radial-gradient(circle,rgba(76,111,255,.22),transparent 65%);filter:blur(10px);
}
.page-hero h1{font-size:clamp(30px,4.2vw,46px);letter-spacing:-.035em;color:#fff}
.page-hero p{margin-top:14px;color:var(--ink-2);max-width:40em;font-size:15px;position:relative}
.page-hero .meta-line{margin-top:18px}
.doc-wrap{display:grid;grid-template-columns:210px minmax(0,1fr);gap:56px;padding:56px 0 96px}
.doc-nav{position:sticky;top:96px;align-self:start;display:flex;flex-direction:column;font-size:13px}
.doc-nav a{
  color:var(--muted);padding:6px 12px;border-left:1px solid var(--line-2);
  transition:color .16s,border-color .16s,background .16s;
}
.doc-nav a:hover{color:#fff;border-left-color:var(--cyan);background:rgba(94,231,247,.04)}
.doc{max-width:780px}
.doc section{padding:24px 0;border-bottom:1px dashed var(--line-2);scroll-margin-top:96px}
.doc section:first-child{padding-top:0}
.doc section:last-child{border-bottom:0}
.doc h2{font-size:22px;color:#fff;margin-bottom:10px;letter-spacing:-.02em}
.doc h3{font-size:15.5px;color:#fff;margin:20px 0 6px}
.doc p{font-size:14.5px;line-height:1.85;color:var(--ink-2);margin-bottom:10px}
.doc ul{display:grid;gap:6px;margin:8px 0 12px}
.doc li{position:relative;padding-left:16px;font-size:14px;color:var(--ink-2);line-height:1.8}
.doc li::before{
  content:"";position:absolute;left:0;top:.72em;width:5px;height:5px;border-radius:50%;
  background:var(--cyan);box-shadow:0 0 8px rgba(94,231,247,.6);
}
.doc a:not(.btn){color:#9deffa;border-bottom:1px solid rgba(94,231,247,.35)}
.doc a:not(.btn):hover{color:#fff;border-bottom-color:var(--cyan)}
.doc pre{
  margin:10px 0 14px;padding:14px 16px;background:rgba(0,0,0,.35);
  border:1px solid var(--line-2);border-radius:10px;overflow-x:auto;
}
.doc pre code{background:none;color:#9deffa;font-size:12.5px;padding:0;white-space:pre}
.doc .note{
  margin-top:14px;padding:14px 16px;border-left:2px solid var(--cyan);
  background:rgba(94,231,247,.06);border-radius:0 10px 10px 0;
  font-size:13.5px;color:#cfe9ef;
}
.contact-card{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  margin:16px 0 12px;padding:20px 22px;
  background:linear-gradient(150deg,rgba(94,231,247,.09),rgba(76,111,255,.09));
  border:1px solid rgba(120,160,255,.25);border-radius:14px;
}
.contact-card b{font-size:15px;color:#fff}
.contact-card p{margin:4px 0 0;font-size:13px;color:var(--ink-2)}
.contact-card .btn{flex:none}
.meta-line{font-family:var(--mono);font-size:11.5px;color:var(--muted);margin-top:6px}

@media (max-width:820px){
  .page-hero{padding:48px 0 32px}
  .doc-wrap{grid-template-columns:1fr;gap:26px;padding:36px 0 72px}
  .doc-nav{position:static;flex-direction:row;flex-wrap:wrap}
  .doc-nav a{border-left:0;border-bottom:1px solid var(--line-2);padding:5px 12px}
}
@media (max-width:600px){
  .contact-card{flex-direction:column;align-items:flex-start}
  .contact-card .btn{width:100%}
  .doc h2{font-size:20px}
}