/* ============================================================
   图勘 DrawScan — 设计语言：工程蓝图 × 精密扫描（暗色）
   记忆点：Hero 扫描对比工作台，扫描线扫过图纸上浮现差异标记
   ============================================================ */
:root{
  --bg-0:#050A14;          /* 页面最深底色 */
  --bg-1:#081226;          /* 区块底色 */
  --panel:#0C1A33;         /* 面板 */
  --panel-2:#0F2140;       /* 面板悬浮 */
  --line:rgba(102,168,255,.14);   /* 蓝图网格线 */
  --line-strong:rgba(120,180,255,.30);
  --blue:#1E6FE8;          /* 品牌主蓝（图标右半） */
  --cyan:#3BD8F5;          /* 品牌青（准星色） */
  --navy:#0B2A4A;          /* 图标左半深蓝 */
  --red:#FF5D5D;           /* 差异标记红 */
  --ink:#E8F1FC;           /* 主文字 */
  --ink-2:#9FB4D4;         /* 次级文字 */
  --ink-3:#5F7699;         /* 弱文字 */
  --mono:"JetBrains Mono","Cascadia Code",Consolas,"Courier New",monospace;
  --sans:"PingFang SC","HarmonyOS Sans SC","MiSans","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  --ease:cubic-bezier(.22,.9,.28,1);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  background:var(--bg-0);
  color:var(--ink);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.7;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
::selection{background:rgba(59,216,245,.28);color:#fff}
a{color:inherit;text-decoration:none}
img,svg{display:block}
.container{width:min(1200px,92vw);margin:0 auto}

/* ---------- 全局蓝图网格背景 + 噪点 ---------- */
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:
    linear-gradient(var(--line) 1px,transparent 1px),
    linear-gradient(90deg,var(--line) 1px,transparent 1px),
    linear-gradient(rgba(102,168,255,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(102,168,255,.05) 1px,transparent 1px);
  background-size:120px 120px,120px 120px,24px 24px,24px 24px;
  mask-image:radial-gradient(ellipse 90% 70% at 50% 0%,#000 40%,transparent 100%);
}
body::after{ /* 噪点 */
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;opacity:.5;
  background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3CfeColorMatrix values='0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.03 0'/%3E%3C/filter%3E%3Crect width='200' height='200' filter='url(%23n)'/%3E%3C/svg%3E");
}
main,header,footer{position:relative;z-index:1}

/* ---------- 通用文字 ---------- */
.mono{font-family:var(--mono)}
.kicker{
  font-family:var(--mono);font-size:.78rem;letter-spacing:.32em;
  text-transform:uppercase;color:var(--cyan);
  display:inline-flex;align-items:center;gap:.7em;
}
.kicker::before{content:"";width:26px;height:1px;background:linear-gradient(90deg,transparent,var(--cyan))}
.h2{
  font-size:clamp(1.7rem,3.4vw,2.6rem);font-weight:800;line-height:1.25;
  letter-spacing:.02em;margin:.55em 0 .35em;
}
.h2 .accent{
  background:linear-gradient(100deg,var(--blue) 10%,var(--cyan) 90%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.sec-lead{color:var(--ink-2);max-width:620px;font-size:1.02rem}

/* ---------- 导航 ---------- */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:50;
  transition:background .35s var(--ease),border-color .35s var(--ease),backdrop-filter .35s;
  border-bottom:1px solid transparent;
}
.nav.scrolled{
  background:rgba(5,10,20,.82);backdrop-filter:blur(14px);
  border-bottom-color:var(--line);
}
.nav-inner{
  width:min(1200px,92vw);margin:0 auto;height:68px;
  display:flex;align-items:center;gap:2.4rem;
}
.brand{display:flex;align-items:center;gap:.65rem;font-weight:800;font-size:1.12rem;letter-spacing:.04em}
.brand .en{font-family:var(--mono);font-weight:500;color:var(--ink-2);font-size:.82rem;letter-spacing:.14em;margin-left:.15rem}
.nav-links{display:flex;gap:2rem;margin-left:auto;font-size:.92rem;color:var(--ink-2)}
.nav-links a{position:relative;padding:.35em 0;transition:color .25s}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:0;height:1px;width:0;
  background:var(--cyan);transition:width .3s var(--ease);
}
.nav-links a:hover{color:var(--ink)}
.nav-links a:hover::after{width:100%}
.btn{
  display:inline-flex;align-items:center;gap:.5em;cursor:pointer;
  font-family:var(--sans);font-weight:600;font-size:.95rem;
  padding:.72em 1.5em;border-radius:6px;border:1px solid transparent;
  transition:transform .25s var(--ease),box-shadow .25s,background .25s,border-color .25s;
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(115deg,var(--blue),#2AA7EE 60%,var(--cyan));
  color:#04121F;box-shadow:0 4px 22px rgba(30,111,232,.35);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 30px rgba(59,216,245,.4)}
.btn-ghost{border-color:var(--line-strong);color:var(--ink)}
.btn-ghost:hover{border-color:var(--cyan);color:var(--cyan);transform:translateY(-2px)}
.btn-sm{padding:.5em 1.1em;font-size:.86rem}
.nav .btn{margin-left:.6rem}


/* ---------- Hero ---------- */
.hero{
  position:relative;padding:170px 0 90px;
  display:grid;grid-template-columns:minmax(0,5fr) minmax(0,6fr);
  gap:3.5rem;align-items:center;
  width:min(1240px,92vw);margin:0 auto;
}
.hero-badge{
  display:inline-flex;align-items:center;gap:.6em;
  font-family:var(--mono);font-size:.76rem;letter-spacing:.18em;color:var(--cyan);
  border:1px solid rgba(59,216,245,.3);border-radius:100px;
  padding:.45em 1.1em;background:rgba(59,216,245,.06);
}
.hero-badge .dot{width:6px;height:6px;border-radius:50%;background:var(--cyan);animation:pulse 1.8s infinite}
@keyframes pulse{0%,100%{box-shadow:0 0 0 0 rgba(59,216,245,.5)}55%{box-shadow:0 0 0 7px rgba(59,216,245,0)}}
.hero h1{
  font-size:clamp(2.4rem,4.6vw,3.7rem);font-weight:900;line-height:1.22;
  letter-spacing:.02em;margin:1.4rem 0 1.1rem;
}
.hero h1 .grad{
  background:linear-gradient(105deg,var(--blue) 5%,var(--cyan) 85%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero p.sub{color:var(--ink-2);font-size:1.08rem;max-width:32em;margin-bottom:2.2rem}
.hero-cta{display:flex;gap:1rem;flex-wrap:wrap;margin-bottom:2.4rem}
.hero-meta{display:flex;gap:1.8rem;flex-wrap:wrap;font-family:var(--mono);font-size:.75rem;color:var(--ink-3);letter-spacing:.1em}
.hero-meta span{display:flex;align-items:center;gap:.5em}
.hero-meta i{width:5px;height:5px;background:var(--cyan);display:inline-block;transform:rotate(45deg)}
@media(max-width:960px){
  .hero{grid-template-columns:1fr;padding-top:130px;gap:2.6rem}
}

/* 扫描光标十字 —— 跟随鼠标的准星（仅 hero 区域） */
.reticle{
  position:fixed;z-index:5;pointer-events:none;width:56px;height:56px;
  transform:translate(-50%,-50%);opacity:0;transition:opacity .3s;
}
.reticle::before,.reticle::after{
  content:"";position:absolute;background:rgba(59,216,245,.55);
}
.reticle::before{left:50%;top:0;width:1px;height:100%;transform:translateX(-50%)}
.reticle::after{top:50%;left:0;height:1px;width:100%;transform:translateY(-50%)}
.reticle .ring{
  position:absolute;inset:12px;border:1px solid rgba(59,216,245,.5);border-radius:50%;
}

/* ---------- 对比工作台（Hero 右侧核心视觉） ---------- */
.workbench{
  background:linear-gradient(160deg,var(--panel),#081426 70%);
  border:1px solid var(--line-strong);
  border-radius:14px;overflow:hidden;
  box-shadow:0 30px 80px rgba(0,0,0,.55),0 0 0 1px rgba(59,216,245,.05) inset;
}
.wb-titlebar{
  display:flex;align-items:center;gap:.8rem;padding:.7rem 1rem;
  border-bottom:1px solid var(--line);background:rgba(255,255,255,.02);
}
.wb-dots{display:flex;gap:6px}
.wb-dots i{width:10px;height:10px;border-radius:50%;background:#23375C}
.wb-dots i:first-child{background:var(--red)}
.wb-dots i:nth-child(2){background:#FFC24B}
.wb-dots i:nth-child(3){background:#3BCf83}
.wb-title{font-family:var(--mono);font-size:.74rem;color:var(--ink-3);letter-spacing:.12em}
.wb-tabs{margin-left:auto;display:flex;gap:.3rem}
.wb-tab{
  font-family:var(--mono);font-size:.72rem;letter-spacing:.08em;color:var(--ink-3);
  padding:.32em .9em;border-radius:5px;cursor:pointer;border:1px solid transparent;
  transition:all .25s;user-select:none;
}
.wb-tab.active{color:var(--cyan);border-color:rgba(59,216,245,.35);background:rgba(59,216,245,.07)}
.wb-body{display:grid;grid-template-columns:minmax(0,1fr) 168px;min-height:340px}
@media(max-width:520px){.wb-body{grid-template-columns:1fr}}
.wb-canvas{
  position:relative;overflow:hidden;background:
    radial-gradient(ellipse at 30% 20%,rgba(30,111,232,.14),transparent 55%),
    #060F20;
  background-size:auto;
}
.wb-canvas .blueprint-grid{
  position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(80,150,255,.07) 1px,transparent 1px),
    linear-gradient(90deg,rgba(80,150,255,.07) 1px,transparent 1px);
  background-size:28px 28px;
}
.wb-canvas svg.drawing{position:relative;width:100%;height:100%;padding:1.2rem}
/* 扫描线 */
.scanline{
  position:absolute;top:0;bottom:0;width:2px;
  background:linear-gradient(180deg,transparent,var(--cyan) 20%,#fff 50%,var(--cyan) 80%,transparent);
  box-shadow:0 0 18px 4px rgba(59,216,245,.45);
  animation:scan 4.2s var(--ease) infinite;
}
@keyframes scan{
  0%{left:-2%;opacity:0}
  6%{opacity:1}
  88%{opacity:1}
  100%{left:102%;opacity:0}
}
/* 差异标记 */
.diffmark{
  position:absolute;transform:translate(-50%,-50%);pointer-events:none;
  opacity:0;animation:markin .5s var(--ease) forwards;
}
.diffmark .box{
  width:34px;height:34px;border:1.5px solid var(--red);border-radius:4px;
  box-shadow:0 0 14px rgba(255,93,93,.5),0 0 0 1px rgba(255,93,93,.25) inset;
  animation:markpulse 1.6s infinite;
  position:relative;
}
.diffmark .box::after{
  content:"";position:absolute;left:50%;top:50%;width:6px;height:6px;
  transform:translate(-50%,-50%);background:var(--red);border-radius:50%;
}
.diffmark .tag{
  position:absolute;left:38px;top:-9px;font-family:var(--mono);
  font-size:.62rem;color:#FFB3B3;background:rgba(255,93,93,.12);
  border:1px solid rgba(255,93,93,.4);padding:.15em .5em;border-radius:3px;
  white-space:nowrap;letter-spacing:.06em;
}
@keyframes markpulse{0%,100%{box-shadow:0 0 10px rgba(255,93,93,.35)}50%{box-shadow:0 0 22px rgba(255,93,93,.7)}}
@keyframes markin{from{opacity:0;transform:translate(-50%,-50%) scale(.4)}to{opacity:1;transform:translate(-50%,-50%) scale(1)}}
/* 底部状态条 */
.wb-status{
  grid-column:1/-1;display:flex;align-items:center;gap:1.4rem;
  padding:.6rem 1rem;border-top:1px solid var(--line);
  font-family:var(--mono);font-size:.7rem;color:var(--ink-3);letter-spacing:.08em;
}
.wb-status .ok{color:#3BCF83}
/* 右侧差异面板 */
.wb-side{
  border-left:1px solid var(--line);padding:1rem .9rem;
  display:flex;flex-direction:column;gap:.9rem;background:rgba(255,255,255,.015);
}
.wb-stat .lab{font-size:.68rem;color:var(--ink-3);letter-spacing:.1em}
.wb-stat .val{font-family:var(--mono);font-weight:700;font-size:1.5rem;color:var(--cyan);line-height:1.2}
.wb-stat.red .val{color:var(--red)}
.wb-difflist{display:flex;flex-direction:column;gap:.45rem;margin-top:.2rem}
.wb-difflist .item{
  font-size:.7rem;color:var(--ink-2);border:1px solid var(--line);
  border-radius:5px;padding:.42em .6em;display:flex;gap:.5em;align-items:center;
  opacity:0;transform:translateX(8px);animation:slidein .4s var(--ease) forwards;
}
.wb-difflist .item i{width:5px;height:5px;border-radius:50%;background:var(--red);flex:none}
.wb-difflist .item:nth-child(2){animation-delay:.5s}
.wb-difflist .item:nth-child(3){animation-delay:1s}
.wb-difflist .item:nth-child(4){animation-delay:1.5s}
@keyframes slidein{to{opacity:1;transform:none}}

/* ---------- 格式跑马灯 ---------- */
.marquee-wrap{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:rgba(255,255,255,.015);overflow:hidden;padding:1.1rem 0;position:relative}
.marquee-wrap::before,.marquee-wrap::after{
  content:"";position:absolute;top:0;bottom:0;width:120px;z-index:2;pointer-events:none;
}
.marquee-wrap::before{left:0;background:linear-gradient(90deg,var(--bg-0),transparent)}
.marquee-wrap::after{right:0;background:linear-gradient(-90deg,var(--bg-0),transparent)}
.marquee{display:flex;gap:3.2rem;width:max-content;animation:marq 30s linear infinite}
.marquee span{
  font-family:var(--mono);font-size:.82rem;letter-spacing:.22em;color:var(--ink-3);
  display:flex;align-items:center;gap:3.2rem;white-space:nowrap;
}
.marquee span::after{content:"◆";font-size:.5em;color:rgba(59,216,245,.4)}
@keyframes marq{to{transform:translateX(-50%)}}

/* ---------- 区块通用 ---------- */
section.block{padding:110px 0}
.sec-head{margin-bottom:3.4rem}

/* ---------- 能力大块（非对称交错） ---------- */
.cap{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:4rem;align-items:center;margin-bottom:6.5rem;
}
.cap:last-child{margin-bottom:0}
.cap.flip .cap-visual{order:-1}
.cap-num{
  font-family:var(--mono);font-size:.75rem;color:var(--cyan);letter-spacing:.3em;
  border:1px solid rgba(59,216,245,.3);width:fit-content;padding:.3em 1em;border-radius:100px;margin-bottom:1.3rem;
}
.cap h3{font-size:clamp(1.4rem,2.4vw,1.9rem);font-weight:800;line-height:1.3;margin-bottom:.7rem}
.cap p{color:var(--ink-2);margin-bottom:1.3rem;max-width:34em}
.cap ul{list-style:none;display:flex;flex-direction:column;gap:.55rem}
.cap ul li{display:flex;gap:.7em;color:var(--ink-2);font-size:.94rem}
.cap ul li::before{content:"▸";color:var(--cyan);flex:none}
.cap-visual{
  background:linear-gradient(160deg,var(--panel),#081426);
  border:1px solid var(--line-strong);border-radius:14px;
  padding:2rem;position:relative;overflow:hidden;
  box-shadow:0 24px 60px rgba(0,0,0,.4);
}
.cap-visual .blueprint-grid{
  position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(80,150,255,.06) 1px,transparent 1px),
    linear-gradient(90deg,rgba(80,150,255,.06) 1px,transparent 1px);
  background-size:26px 26px;
}
.cap-visual svg{position:relative;width:100%;height:auto}
.cap-visual .corner{
  position:absolute;width:14px;height:14px;border:1.5px solid var(--cyan);opacity:.6;
}
.cap-visual .corner.tl{top:10px;left:10px;border-right:0;border-bottom:0}
.cap-visual .corner.tr{top:10px;right:10px;border-left:0;border-bottom:0}
.cap-visual .corner.bl{bottom:10px;left:10px;border-right:0;border-top:0}
.cap-visual .corner.br{bottom:10px;right:10px;border-left:0;border-top:0}
@media(max-width:920px){
  .cap{grid-template-columns:1fr;gap:2.2rem}
  .cap.flip .cap-visual{order:0}
}

/* 3D 模型旋转容器 */
.spin{animation:spin3d 14s linear infinite;transform-origin:center}
@keyframes spin3d{0%{transform:rotate(0)}100%{transform:rotate(360deg)}}

/* 报告文档视觉 */
.report-doc{
  position:relative;background:#0B1930;border:1px solid var(--line-strong);
  border-radius:8px;padding:1.4rem 1.4rem 1.6rem;max-width:340px;margin:0 auto;
  box-shadow:14px 14px 0 rgba(30,111,232,.12);
}
.report-doc .doc-title{font-family:var(--mono);font-size:.72rem;color:var(--cyan);letter-spacing:.14em;margin-bottom:1rem;display:flex;justify-content:space-between}
.report-doc .row{height:7px;border-radius:3px;background:rgba(159,180,212,.16);margin-bottom:.65rem}
.report-doc .row.short{width:62%}
.report-doc .diffrow{
  display:flex;align-items:center;gap:.6rem;margin:.85rem 0;
  border:1px solid rgba(255,93,93,.35);background:rgba(255,93,93,.07);
  border-radius:5px;padding:.5em .7em;
}
.report-doc .diffrow i{width:7px;height:7px;background:var(--red);transform:rotate(45deg);flex:none}
.report-doc .diffrow span{font-family:var(--mono);font-size:.66rem;color:#FFB3B3;letter-spacing:.05em}

/* ---------- 功能网格 ---------- */
.feat-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:1.1rem;
}
.feat{
  border:1px solid var(--line);border-radius:12px;padding:1.7rem 1.6rem;
  background:linear-gradient(170deg,rgba(255,255,255,.02),transparent);
  transition:transform .3s var(--ease),border-color .3s,background .3s;
  position:relative;overflow:hidden;
}
.feat::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,var(--blue),var(--cyan));
  transform:scaleX(0);transform-origin:left;transition:transform .4s var(--ease);
}
.feat:hover{transform:translateY(-5px);border-color:var(--line-strong);background:rgba(30,111,232,.05)}
.feat:hover::before{transform:scaleX(1)}
.feat .fi{
  width:42px;height:42px;border-radius:9px;display:grid;place-items:center;margin-bottom:1.1rem;
  background:rgba(30,111,232,.12);border:1px solid rgba(59,216,245,.25);
  color:var(--cyan);
}
.feat h4{font-size:1.04rem;font-weight:700;margin-bottom:.45rem}
.feat p{font-size:.88rem;color:var(--ink-2)}
@media(max-width:920px){.feat-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:600px){.feat-grid{grid-template-columns:1fr}}

/* ---------- 工作原理（步骤） ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:1.4rem;position:relative}
.steps::before{
  content:"";position:absolute;top:31px;left:8%;right:8%;height:1px;
  background:repeating-linear-gradient(90deg,var(--line-strong) 0 8px,transparent 8px 16px);
}
.step{text-align:left;position:relative;padding-top:0}
.step .snum{
  width:62px;height:62px;border-radius:50%;display:grid;place-items:center;
  background:var(--bg-1);border:1px solid var(--line-strong);
  font-family:var(--mono);font-weight:700;color:var(--cyan);font-size:1.05rem;
  margin-bottom:1.4rem;position:relative;z-index:1;
  box-shadow:0 0 0 6px var(--bg-0),0 0 24px rgba(59,216,245,.15);
}
.step h4{font-size:1.12rem;font-weight:700;margin-bottom:.5rem}
.step p{color:var(--ink-2);font-size:.92rem;max-width:24em}
@media(max-width:760px){
  .steps{grid-template-columns:1fr;gap:2.4rem}
  .steps::before{display:none}
}

/* ---------- 数据带 ---------- */
.metrics{
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  background:linear-gradient(120deg,rgba(30,111,232,.08),rgba(59,216,245,.04));
}
.metrics-inner{
  width:min(1200px,92vw);margin:0 auto;padding:64px 0;
  display:grid;grid-template-columns:repeat(4,1fr);gap:2rem;
}
.metric .num{
  font-family:var(--mono);font-weight:700;font-size:clamp(1.9rem,3.4vw,2.8rem);
  background:linear-gradient(100deg,#fff,var(--cyan));
  -webkit-background-clip:text;background-clip:text;color:transparent;line-height:1.15;
}
.metric .lab{color:var(--ink-2);font-size:.88rem;margin-top:.4rem}
.metric .sub{color:var(--ink-3);font-size:.74rem;font-family:var(--mono);letter-spacing:.1em;margin-top:.2rem}
@media(max-width:760px){.metrics-inner{grid-template-columns:repeat(2,1fr)}}

/* ---------- 应用场景 ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1.1rem}
.scene{
  border:1px solid var(--line);border-radius:12px;padding:1.6rem 1.4rem;
  position:relative;overflow:hidden;min-height:190px;
  display:flex;flex-direction:column;justify-content:flex-end;gap:.4rem;
  transition:border-color .3s;
}
.scene:hover{border-color:rgba(59,216,245,.4)}
.scene .bg-icon{
  position:absolute;top:-14px;right:-10px;font-size:6.2rem;font-weight:900;
  color:rgba(102,168,255,.06);font-family:var(--mono);line-height:1;user-select:none;
}
.scene h4{font-weight:700;font-size:1rem}
.scene p{font-size:.84rem;color:var(--ink-2)}
@media(max-width:920px){.scene-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.scene-grid{grid-template-columns:1fr}}

/* ---------- 定价 ---------- */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.4rem;align-items:stretch}
.plan{
  border:1px solid var(--line);border-radius:14px;padding:2.2rem 2rem;
  background:linear-gradient(170deg,rgba(255,255,255,.02),transparent);
  display:flex;flex-direction:column;position:relative;
  transition:transform .3s var(--ease),border-color .3s;
}
.plan:hover{transform:translateY(-6px)}
.plan.hot{
  border-color:rgba(59,216,245,.45);
  background:linear-gradient(170deg,rgba(30,111,232,.12),rgba(8,20,38,.4));
  box-shadow:0 24px 60px rgba(30,111,232,.18);
}
.plan .hot-tag{
  position:absolute;top:-13px;left:50%;transform:translateX(-50%);
  font-family:var(--mono);font-size:.68rem;letter-spacing:.2em;color:#04121F;
  background:linear-gradient(90deg,var(--cyan),var(--blue));padding:.3em 1.2em;border-radius:100px;font-weight:700;
}
.plan h4{font-size:1.15rem;font-weight:800;margin-bottom:.3rem}
.plan .desc{font-size:.84rem;color:var(--ink-3);margin-bottom:1.4rem}
.plan .price{font-family:var(--mono);font-size:2.3rem;font-weight:700;line-height:1;margin-bottom:.3rem}
.plan .price small{font-size:.85rem;color:var(--ink-3);font-weight:400}
.plan ul{list-style:none;margin:1.5rem 0 2rem;display:flex;flex-direction:column;gap:.6rem;flex:1}
.plan ul li{display:flex;gap:.6em;font-size:.9rem;color:var(--ink-2)}
.plan ul li::before{content:"✓";color:var(--cyan);font-weight:700;flex:none}
@media(max-width:920px){.price-grid{grid-template-columns:1fr;max-width:460px;margin:0 auto}}

/* ---------- FAQ ---------- */
.faq{max-width:760px;margin:0 auto}
.faq details{
  border:1px solid var(--line);border-radius:10px;margin-bottom:.8rem;
  background:rgba(255,255,255,.015);overflow:hidden;transition:border-color .3s;
}
.faq details[open]{border-color:rgba(59,216,245,.35)}
.faq summary{
  cursor:pointer;padding:1.15rem 1.4rem;font-weight:600;font-size:.98rem;
  list-style:none;display:flex;justify-content:space-between;align-items:center;gap:1rem;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"+";font-family:var(--mono);color:var(--cyan);font-size:1.2rem;flex:none;
  transition:transform .3s;
}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq .faq-a{padding:0 1.4rem 1.3rem;color:var(--ink-2);font-size:.92rem}

/* ---------- 底部 CTA ---------- */
.cta-final{
  margin:0 auto;width:min(1200px,92vw);
  border:1px solid rgba(59,216,245,.3);border-radius:18px;
  background:
    radial-gradient(ellipse at 20% 0%,rgba(30,111,232,.22),transparent 60%),
    radial-gradient(ellipse at 85% 100%,rgba(59,216,245,.14),transparent 55%),
    var(--panel);
  padding:4.6rem 2rem;text-align:center;position:relative;overflow:hidden;
}
.cta-final::before{
  content:"";position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(80,150,255,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(80,150,255,.05) 1px,transparent 1px);
  background-size:30px 30px;pointer-events:none;
}
.cta-final>*{position:relative}
.cta-final h2{font-size:clamp(1.7rem,3.4vw,2.5rem);font-weight:900;margin-bottom:.8rem}
.cta-final p{color:var(--ink-2);margin-bottom:2.2rem}
.cta-final .hero-cta{justify-content:center;margin-bottom:0}

/* ---------- Footer ---------- */
footer{border-top:1px solid var(--line);margin-top:110px;padding:3.4rem 0 2.4rem}
.foot-inner{
  width:min(1200px,92vw);margin:0 auto;
  display:flex;justify-content:space-between;gap:2.5rem;flex-wrap:wrap;
}
.foot-brand p{color:var(--ink-3);font-size:.82rem;margin-top:.8rem;max-width:26em}
.foot-cols{display:flex;gap:4rem;flex-wrap:wrap}
.foot-col h5{font-size:.8rem;color:var(--ink-3);letter-spacing:.14em;margin-bottom:1rem;font-weight:600}
.foot-col a{display:block;color:var(--ink-2);font-size:.88rem;margin-bottom:.55rem;transition:color .25s}
.foot-col a:hover{color:var(--cyan)}
.foot-bottom{
  width:min(1200px,92vw);margin:2.6rem auto 0;padding-top:1.4rem;
  border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;
  font-family:var(--mono);font-size:.72rem;color:var(--ink-3);letter-spacing:.08em;
}

/* ---------- 滚动渐入 ---------- */
.js .reveal{opacity:0;transform:translateY(26px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.js .reveal.visible{opacity:1;transform:none}
.reveal.d1{transition-delay:.1s}.reveal.d2{transition-delay:.2s}.reveal.d3{transition-delay:.3s}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}
}

button{font:inherit}button:disabled{cursor:not-allowed;opacity:.55}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:2px solid var(--cyan);outline-offset:5px}
section[id]{scroll-margin-top:90px}.btn-ghost{background:transparent}
.wb-tab{background:transparent;white-space:nowrap}.wb-tab.active{color:var(--cyan)}
.nav-inner{gap:1.2rem}.nav-links{gap:1.2rem;align-items:center}.brand{white-space:nowrap}
.nav-login{background:none;border:0;color:var(--ink-2);font-size:.8rem}
.menu-toggle{display:none}.download-panel{text-align:center}.download-panel .kicker{justify-content:center}
.download-panel .sec-lead{margin:0 auto}.download-note{color:var(--ink-2);margin:1rem 0 1.5rem}
.download-error{padding:160px 0 80px;min-height:60vh;text-align:center}.download-error p{margin:1.5rem 0}
@media(max-width:1100px){
 .menu-toggle{display:inline-flex;margin-left:auto!important}
 .nav-links{display:none;position:absolute;top:68px;left:0;right:0;background:var(--bg-1);padding:1.5rem;flex-direction:column;align-items:stretch;border-bottom:1px solid var(--line)}
 .nav-links.open{display:flex}.nav-inner{gap:.5rem}.nav .btn{margin-left:0}
}
@media(max-width:520px){.brand .en{display:none}.brand{font-size:1rem}.nav-inner{width:94vw}.nav .btn{font-size:.8rem;padding:.5em .7em}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.js .reveal{opacity:1;transform:none}.reticle{display:none}}

@media(max-width:520px){.wb-titlebar{flex-wrap:wrap}.wb-tabs{width:100%;justify-content:flex-end}.wb-title{flex:1}.hero-badge{letter-spacing:.08em}}

[hidden]{display:none!important}.purchase-page{padding-top:140px;min-height:65vh}
.member-catalog{margin-top:2rem}.catalog-status{color:var(--ink-2);text-align:center;margin-bottom:1rem}.catalog-items{grid-template-columns:repeat(auto-fit,minmax(min(100%,260px),1fr))}
.nav-login{cursor:pointer;color:var(--ink)}#account-label{font-size:.8rem;white-space:nowrap}.nav-inner{gap:.7rem}.nav-links{gap:.8rem}
dialog{position:fixed;inset:0;margin:auto;width:min(460px,92vw);max-height:90vh;overflow:auto;padding:2rem;border:1px solid var(--line-strong);border-radius:14px;background:var(--panel);color:var(--ink)}
dialog::backdrop{background:rgba(0,0,0,.75)}dialog h2{padding-right:2rem;margin-bottom:1rem}.dialog-close{position:absolute;top:.8rem;right:.8rem;background:transparent;color:var(--ink);border:0;font-size:1.6rem;cursor:pointer;padding:.25rem .6rem}
dialog p{margin:1rem 0;color:var(--ink-2)}#login-pane{text-align:center}#login-qr{display:block;max-width:100%;height:auto;margin:1.5rem auto;background:white;border-radius:8px}
dialog label{display:block;margin-top:.8rem}dialog input{width:100%;min-width:0;background:var(--bg-1);color:var(--ink);padding:.75rem;border:1px solid var(--line-strong);border-radius:6px;font:inherit}.code-row{display:flex;gap:.6rem;margin-bottom:1.2rem}
#account-message{min-height:1.7em;color:var(--cyan)}#account-message.error{color:#ffa3a3}.stage-note{font-size:.85rem}#account-notice{position:fixed;bottom:20px;left:50%;transform:translateX(-50%);z-index:100;background:var(--panel);border:1px solid var(--cyan);padding:1rem;max-width:90vw;border-radius:8px}
@media(max-width:1250px){.menu-toggle{display:inline-flex;margin-left:auto!important}.nav-links{display:none;position:absolute;top:68px;left:0;right:0;background:var(--bg-1);padding:1.5rem;flex-direction:column;align-items:stretch;border-bottom:1px solid var(--line)}.nav-links.open{display:flex}}