:root{
  --font:"思源黑体 CN","思源黑体","Source Han Sans SC","Noto Sans CJK SC",-apple-system,system-ui,Helvetica,Arial,sans-serif;
  --bg:#F4F8FE; --bg-2:#EAF3FD; --card:#FFFFFF;
  --p:#2E7DF6; --p-2:#1B5FD9; --p-3:#6AA9FF; --p-tint:#E9F2FE;
  --c:#22B8EC; --c-tint:#E3F6FD;
  --ink:#0D2A4E; --body:#4A6185; --muted:#7E92B4;
  --line:#DCE9F9; --line-2:#EDF3FC;
  --grad:linear-gradient(135deg,#2E7DF6 0%,#22A7F0 55%,#2EC8F0 100%);
  --grad-soft:linear-gradient(135deg,#EAF3FE 0%,#F2FAFF 100%);
  --sh:0 14px 40px rgba(46,125,246,.12);
  --sh-sm:0 6px 18px rgba(46,125,246,.08);
  --sh-lg:0 24px 60px rgba(27,95,217,.16);
  --r:16px; --r-lg:22px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:86px}
body{
  font-family:var(--font);
  background:var(--bg);
  color:var(--body);
  font-size:15px;line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
.container{max-width:1680px;margin:0 auto;padding:0 28px}
.sec{padding:88px 0}
.sec.alt{background:var(--bg-2)}
.sec.soft{background:var(--grad-soft)}

/* 头部通用 */
.sec-head{max-width:780px;margin:0 auto 52px;text-align:center}
.kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;color:var(--p-2);
  background:var(--p-tint);border:1px solid var(--line);
  padding:7px 16px;border-radius:999px;letter-spacing:2px;margin-bottom:18px;
}
.kicker .dot{width:7px;height:7px;border-radius:50%;background:var(--grad);flex:none}
.h2{font-size:clamp(26px,3.4vw,38px);font-weight:800;color:var(--ink);line-height:1.35;letter-spacing:.5px}
.lead{margin-top:16px;font-size:16px;color:var(--body);line-height:1.9}
.lead b{color:var(--p-2);font-weight:700}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:14px 30px;border-radius:999px;font-size:15px;font-weight:700;
  transition:transform .25s ease,box-shadow .25s ease,background .25s ease,color .25s ease,border-color .25s ease;
  white-space:nowrap;
  color:#fff;
  text-align: center;
}
.btn svg{width:18px;height:18px;flex:none}
.btn-p{background:var(--grad);color:#fff;box-shadow:var(--sh)}
.btn-p:hover{transform:translateY(-2px);box-shadow:var(--sh-lg)}
.btn-g{background:#fff;color:var(--p-2);border:1.5px solid var(--line);box-shadow:var(--sh-sm)}
.btn-g:hover{border-color:var(--p-3);color:var(--p-2);transform:translateY(-2px);box-shadow:var(--sh)}
.btn-lg{padding:16px 36px;font-size:16px}
.btn-sm{padding:9px 18px;font-size:13.5px;border-radius:999px}

/* 导航 */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(244,248,254,.82);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid transparent;
  transition:border-color .3s ease,box-shadow .3s ease,background .3s ease;
}
.nav.scrolled{background:rgba(255,255,255,.9);border-bottom-color:var(--line-2);box-shadow:0 8px 30px rgba(46,125,246,.07)}
.nav-in{max-width:1680px;margin:0 auto;padding:0 28px;height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:11px;font-size:20px;font-weight:800;color:var(--ink);letter-spacing:1px}
.brand .logo{
  width:40px;height:40px;border-radius:12px;background:var(--grad);
  display:flex;align-items:center;justify-content:center;color:#fff;
  box-shadow:0 6px 16px rgba(46,125,246,.35);flex:none;
}
.brand .logoimg img{height:40px;}
.brand .logo svg{width:22px;height:22px}
.brand em{font-style:normal;font-size:12.5px;font-weight:600;color:var(--muted);letter-spacing:1px;display:block;line-height:1.2;margin-top:1px}
.nav-links{display:flex;align-items:center;gap:6px;list-style:none}
.nav-links a{
  display:block;padding:9px 15px;border-radius:10px;font-size:15px;font-weight:600;color:var(--body);
  transition:color .2s ease,background .2s ease;
}
.nav-links a:hover{color:var(--p-2);background:var(--p-tint)}
.nav-cta{display:flex;align-items:center;gap:12px}
.nav-burger{display:none;width:42px;height:42px;border-radius:12px;background:#fff;border:1px solid var(--line);align-items:center;justify-content:center}
.nav-burger svg{width:20px;height:20px;stroke:var(--ink)}
.mobile-menu{
  display:none;position:fixed;top:72px;left:0;right:0;z-index:99;
  background:rgba(255,255,255,.98);backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line-2);box-shadow:var(--sh);
  padding:16px 28px 24px;
}
.mobile-menu.open{display:block}
.mobile-menu a{display:block;padding:13px 8px;font-size:16px;font-weight:600;color:var(--ink);border-bottom:1px dashed var(--line-2)}
.mobile-menu a:last-child{border-bottom:none}
.mobile-menu .btn{margin-top:18px;width:100%}

/* Hero */
.hero{
  position:relative;padding:158px 0 0;
  background:
    radial-gradient(1000px 520px at 82% -10%,rgba(34,184,236,.18),transparent 60%),
    radial-gradient(760px 480px at -8% 30%,rgba(46,125,246,.14),transparent 60%),
    linear-gradient(180deg,#F4F8FE 0%,#EAF3FD 100%);
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(46,125,246,.13) 1px,transparent 1px);
  background-size:26px 26px;
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.7),transparent 72%);
  mask-image:linear-gradient(180deg,rgba(0,0,0,.7),transparent 72%);
}
.hero-grid{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;padding-bottom:84px}
.hero-badge{
  display:inline-flex;align-items:center;gap:9px;
  font-size:13px;font-weight:700;color:var(--p-2);
  background:rgba(255,255,255,.85);border:1px solid var(--line);
  padding:8px 18px;border-radius:999px;box-shadow:var(--sh-sm);letter-spacing:1.5px;margin-bottom:26px;
}
.hero-badge svg{width:16px;height:16px;color:var(--p)}
.hero h1{
  font-size:clamp(33px,4.6vw,54px);font-weight:800;color:var(--ink);
  line-height:1.32;letter-spacing:.5px;
}
.hero h1 .g{
  background:var(--grad);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{margin-top:22px;font-size:17px;line-height:2;color:var(--body);max-width:540px}
.hero-sub b{color:var(--p-2);font-weight:700}
.hero-cta{display:flex;flex-wrap:wrap;gap:16px;margin-top:34px}
.hero-note{margin-top:18px;font-size:13.5px;color:var(--muted);display:flex;align-items:center;gap:8px}
.hero-note svg{width:15px;height:15px;color:var(--c)}
.hero-quick{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:42px}
.quick{
  background:rgba(255,255,255,.88);border:1px solid var(--line-2);border-radius:var(--r);
  padding:18px 18px 16px;box-shadow:var(--sh-sm);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.quick:hover{transform:translateY(-4px);box-shadow:var(--sh);border-color:var(--line)}
.quick .qi{
  width:40px;height:40px;border-radius:11px;background:var(--p-tint);
  display:flex;align-items:center;justify-content:center;color:var(--p-2);margin-bottom:11px;
}
.quick .qi svg{width:20px;height:20px}
.quick h3{font-size:15.5px;font-weight:700;color:var(--ink);margin-bottom:4px}
.quick p{font-size:12.5px;color:var(--muted);line-height:1.6}

/*  Hero 产品工作台  */
.mock-wrap{position:relative}
.mock{
  position:relative;background:#fff;border-radius:var(--r-lg);
  border:1px solid var(--line-2);box-shadow:var(--sh-lg);
  padding:18px;transform:perspective(1200px) rotateY(-4deg) rotateX(1.5deg);
  transition:transform .5s ease;
}
.mock-wrap:hover .mock{transform:perspective(1200px) rotateY(-1deg) rotateX(.5deg)}
.mock-top{display:flex;align-items:center;gap:10px;padding-bottom:14px;border-bottom:1px solid var(--line-2);margin-bottom:14px}
.mock-dots{display:flex;gap:6px}
.mock-dots i{width:10px;height:10px;border-radius:50%;background:var(--line)}
.mock-dots i:nth-child(1){background:#8FB8F8}
.mock-dots i:nth-child(2){background:#9FD6F5}
.mock-dots i:nth-child(3){background:#B9E6F8}
.mock-title{font-size:13.5px;font-weight:700;color:var(--ink);margin-left:6px;flex:1}
.mock-title small{display:block;font-size:11px;color:var(--muted);font-weight:500}
.mock-wx{
  display:inline-flex;align-items:center;gap:6px;font-size:11.5px;font-weight:700;color:var(--p-2);
  background:var(--p-tint);padding:6px 12px;border-radius:999px;
}
.mock-wx svg{width:13px;height:13px}
.mock-tabs{display:flex;gap:8px;margin-bottom:14px}
.mock-tabs span{
  font-size:12.5px;font-weight:600;color:var(--muted);padding:6px 14px;border-radius:999px;background:var(--bg);
}
.mock-tabs span.on{background:var(--grad);color:#fff;box-shadow:0 4px 12px rgba(46,125,246,.3)}
.mock-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:14px}
.ms{
  background:var(--grad-soft);border:1px solid var(--line-2);border-radius:12px;padding:10px 12px;
}
.ms b{display:block;font-size:16px;font-weight:800;color:var(--p-2);line-height:1.3}
.ms span{font-size:11px;color:var(--muted)}
.mock-sched{
  border:1px solid var(--line-2);border-radius:12px;overflow:hidden;margin-bottom:14px;
}
.sched-head{display:grid;grid-template-columns:repeat(7,1fr);background:var(--bg-2);border-bottom:1px solid var(--line-2)}
.sched-head span{font-size:11px;font-weight:700;color:var(--muted);text-align:center;padding:7px 0}
.sched-body{display:grid;grid-template-columns:repeat(7,1fr);grid-auto-rows:44px;gap:5px;padding:8px}
.sb{
  border-radius:9px;padding:5px 7px;font-size:10.5px;font-weight:700;line-height:1.35;
  display:flex;flex-direction:column;justify-content:center;overflow:hidden;white-space:nowrap;
}
.sb small{font-weight:600;opacity:.85;font-size:9.5px}
.sb-1{background:linear-gradient(135deg,#2E7DF6,#4A96FF);color:#fff}
.sb-2{background:linear-gradient(135deg,#22B8EC,#4ED0F5);color:#fff}
.sb-3{background:linear-gradient(135deg,#8CA9D8,#A9C3EC);color:#fff}
.sb-4{background:linear-gradient(135deg,#D6E4FA,#E7F0FE);color:var(--p-2)}
.sb-empty{background:var(--bg);border:1px dashed var(--line);border-radius:9px}
.mock-bottom{display:grid;grid-template-columns:1.2fr .8fr;gap:14px;align-items:stretch}
.mb-chart{background:#fff;border:1px solid var(--line-2);border-radius:12px;padding:12px 14px}
.mb-chart h4{font-size:12px;font-weight:700;color:var(--ink);margin-bottom:8px;display:flex;align-items:center;justify-content:space-between}
.mb-chart h4 span{font-size:10.5px;color:var(--muted);font-weight:600}
.bars{display:flex;align-items:flex-end;gap:7px;height:74px;padding-top:6px}
.bar{
  flex:1;border-radius:5px 5px 2px 2px;background:var(--grad);
  opacity:.88;transform:scaleY(0);transform-origin:bottom;
  transition:transform .9s cubic-bezier(.22,.9,.32,1);
}
.mock.in .bar,.mock .in .bar{transform:scaleY(1)}
.bar:nth-child(1){height:38%}.bar:nth-child(2){height:62%}.bar:nth-child(3){height:48%}
.bar:nth-child(4){height:80%}.bar:nth-child(5){height:56%}.bar:nth-child(6){height:92%}.bar:nth-child(7){height:70%}
.bar.b2{background:var(--c-tint)}
.bar.b3{background:linear-gradient(135deg,#6AA9FF,#B9D9FF)}
.bar.b4{background:var(--grad)}
.bar.b5{background:linear-gradient(135deg,#22B8EC,#9FE6FB)}
.bar.b6{background:linear-gradient(135deg,#2E7DF6,#6AA9FF)}
.bar.b7{background:var(--c-tint)}
.mb-legend{background:var(--grad-soft);border:1px solid var(--line-2);border-radius:12px;padding:12px 14px}
.mb-legend h4{font-size:12px;font-weight:700;color:var(--ink);margin-bottom:8px}
.lg{display:flex;align-items:center;gap:7px;font-size:11.5px;color:var(--body);margin-bottom:6px}
.lg:last-child{margin-bottom:0}
.lg i{width:10px;height:10px;border-radius:3px;flex:none}
.lg i.li-1{background:var(--p)}.lg i.li-2{background:var(--c)}.lg i.li-3{background:#8CA9D8}.lg i.li-4{background:#D6E4FA}
.float-chip{
  position:absolute;background:#fff;border:1px solid var(--line-2);border-radius:14px;
  box-shadow:var(--sh);padding:12px 16px;display:flex;align-items:center;gap:10px;
  animation:floaty 5.5s ease-in-out infinite;
}
.float-chip .fc-i{width:36px;height:36px;border-radius:10px;display:flex;align-items:center;justify-content:center;flex:none}
.float-chip .fc-i svg{width:18px;height:18px}
.float-chip b{display:block;font-size:12.5px;font-weight:700;color:var(--ink);line-height:1.3}
.float-chip span{font-size:11px;color:var(--muted)}
.fc-1{top:-26px;left:-44px;animation-delay:.4s}
.fc-1 .fc-i{background:var(--c-tint);color:var(--c)}
.fc-2{bottom:-26px;left:-36px;animation-delay:2.2s}
.fc-2 .fc-i{background:var(--p-tint);color:var(--p-2)}
@keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}
@media (prefers-reduced-motion:reduce){
  .float-chip,.bar{animation:none;transition:none}
  .mock{transform:none}
}

/* 定位条 */
.about{position:relative}
.about-card{
  background:#fff;border:1px solid var(--line-2);border-radius:var(--r-lg);
  box-shadow:var(--sh);padding:56px;position:relative;overflow:hidden;
}
.about-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--grad);
}
.about-in{display:grid;grid-template-columns:1.25fr .75fr;gap:48px;align-items:center}
.about h3{font-size:23px;font-weight:800;color:var(--ink);margin-bottom:16px;display:flex;align-items:center;gap:10px}
.about h3 .tag{font-size:12px;font-weight:700;color:var(--p-2);background:var(--p-tint);padding:4px 10px;border-radius:6px;letter-spacing:1px}
.about p{font-size:15.5px;line-height:2;margin-bottom:14px}
.about p b{color:var(--p-2)}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.stat{
  background:var(--grad-soft);border:1px solid var(--line-2);border-radius:var(--r);
  padding:22px 18px;text-align:center;transition:transform .25s ease,box-shadow .25s ease;
}
.stat:hover{transform:translateY(-4px);box-shadow:var(--sh)}
.stat b{display:block;font-size:clamp(20px,2.4vw,26px);font-weight:800;color:var(--p-2);line-height:1.3}
.stat span{font-size:13px;color:var(--muted)}
.base-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:34px;align-items:center}
.base-tags .bt-label{font-size:13.5px;font-weight:700;color:var(--ink);margin-right:4px}
.tag{
  font-size:13px;font-weight:600;color:var(--p-2);background:var(--p-tint);
  border:1px solid var(--line);padding:7px 16px;border-radius:999px;
  transition:background .2s ease,transform .2s ease;
}
.tag:hover{background:#DCE9FB;transform:translateY(-2px)}

/* 核心功能 */
.core-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.core-card{
  position:relative;background:#fff;border:1px solid var(--line-2);border-radius:var(--r-lg);
  padding:32px 26px 30px;box-shadow:var(--sh-sm);
  transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;
  display:flex;flex-direction:column;
}
.core-card:hover{transform:translateY(-6px);box-shadow:var(--sh);border-color:var(--line)}
.core-card .hot{
  position:absolute;top:22px;right:22px;font-size:11px;font-weight:800;letter-spacing:1.5px;color:#fff;
  background:var(--grad);padding:5px 12px;border-radius:999px;box-shadow:0 4px 12px rgba(46,125,246,.35);
}
.ci{
  width:56px;height:56px;border-radius:16px;background:var(--grad);color:#fff;
  display:flex;align-items:center;justify-content:center;margin-bottom:20px;
  box-shadow:0 10px 24px rgba(46,125,246,.28);flex:none;
}
.ci svg{width:27px;height:27px}
.core-card h3{font-size:18.5px;font-weight:800;color:var(--ink);margin-bottom:10px;line-height:1.4}
.core-card p{font-size:13.8px;line-height:1.9;color:var(--body);flex:1}
.core-card .more{
  margin-top:18px;font-size:13px;font-weight:700;color:var(--p-2);
  display:inline-flex;align-items:center;gap:6px;
  padding:10px 12px;margin-left:-12px;border-radius:10px;
  transition:background .2s ease;
}
.core-card .more:hover{background:var(--p-tint)}
.core-card .more svg{width:14px;height:14px;transition:transform .25s ease}
.core-card:hover .more svg{transform:translateX(4px)}
.core-note{
  margin-top:40px;text-align:center;font-size:14px;color:var(--muted);
  background:#fff;border:1px dashed var(--line);border-radius:999px;
  padding:13px 20px;display:inline-block;width:100%;max-width:920px;
}

/* 功能矩阵 */
.feat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.feat{
  background:#fff;border:1px solid var(--line-2);border-radius:var(--r);
  padding:24px 22px;box-shadow:var(--sh-sm);
  transition:transform .28s ease,box-shadow .28s ease,border-color .28s ease;
}
.feat:hover{transform:translateY(-5px);box-shadow:var(--sh);border-color:var(--line)}
.feat .fi{
  width:44px;height:44px;border-radius:12px;background:var(--p-tint);color:var(--p-2);
  display:flex;align-items:center;justify-content:center;margin-bottom:15px;
  transition:background .28s ease,color .28s ease;
}
.feat:hover .fi{background:var(--grad);color:#fff;box-shadow:0 8px 18px rgba(46,125,246,.3)}
.feat .fi svg{width:21px;height:21px}
.feat h3{font-size:16px;font-weight:700;color:var(--ink);margin-bottom:7px}
.feat p{font-size:12.8px;color:var(--muted);line-height:1.75}

/* 深度模块 Tab */
.tabs-nav{
  display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-bottom:40px;
}
.tab-btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:11px 20px;border-radius:999px;font-size:14.5px;font-weight:700;color:var(--body);
  background:#fff;border:1.5px solid var(--line);
  transition:all .25s ease;
}
.tab-btn svg{width:17px;height:17px}
.tab-btn:hover{color:var(--p-2);border-color:var(--p-3)}
.tab-btn.on{background:var(--grad);color:#fff;border-color:transparent;box-shadow:0 8px 22px rgba(46,125,246,.32)}
.tab-panel{display:none}
.tab-panel.on{display:block;animation:fadeUp .45s ease both}
@keyframes fadeUp{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:translateY(0)}}
.tab-card{
  background:#fff;border:1px solid var(--line-2);border-radius:var(--r-lg);
  box-shadow:var(--sh);padding:46px 50px;display:grid;grid-template-columns:1.15fr .85fr;gap:44px;align-items:center;
}
.tab-card .tc-title{font-size:24px;font-weight:800;color:var(--ink);margin-bottom:4px}
.tab-card .tc-en{font-size:12.5px;font-weight:700;color:var(--p-3);letter-spacing:2.5px;text-transform:uppercase;margin-bottom:16px;display:block}
.tab-card .tc-desc{font-size:14.8px;line-height:2;color:var(--body)}
.tab-card .tc-desc b{color:var(--p-2)}
.tc-callout{
  margin-top:18px;background:var(--grad-soft);border:1px solid var(--line-2);border-left:4px solid var(--p);
  border-radius:12px;padding:14px 18px;font-size:14px;font-weight:700;color:var(--p-2);
}
.tc-chips{display:flex;flex-wrap:wrap;gap:11px}
.tc-chip{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--bg);border:1px solid var(--line-2);border-radius:12px;
  padding:11px 16px;font-size:13.5px;font-weight:600;color:var(--ink);
  transition:all .22s ease;
}
.tc-chip svg{width:15px;height:15px;color:var(--p);flex:none}
.tc-chip:hover{background:var(--p-tint);border-color:var(--p-3);transform:translateY(-2px)}
.tc-visual{
  background:var(--grad-soft);border:1px solid var(--line-2);border-radius:var(--r-lg);
  padding:30px;display:flex;flex-direction:column;gap:14px;min-height:240px;justify-content:center;
}
.tc-visual .tv-row{display:flex;gap:12px;flex-wrap:wrap}
.tv-card{
  background:#fff;border:1px solid var(--line-2);border-radius:14px;box-shadow:var(--sh-sm);
  padding:16px 18px;flex:1;min-width:130px;
}
.tv-card b{display:block;font-size:14.5px;font-weight:800;color:var(--ink);margin-bottom:4px}
.tv-card span{font-size:12px;color:var(--muted);line-height:1.6;display:block}
.tv-msg{
  background:#fff;border:1px solid var(--line-2);border-radius:14px;padding:16px 18px;box-shadow:var(--sh-sm);
  display:flex;gap:12px;align-items:flex-start;
}
.tv-msg .tm-i{width:36px;height:36px;border-radius:10px;background:var(--p-tint);color:var(--p-2);display:flex;align-items:center;justify-content:center;flex:none}
.tv-msg .tm-i svg{width:18px;height:18px}
.tv-msg b{display:block;font-size:13.5px;font-weight:700;color:var(--ink)}
.tv-msg p{font-size:12px;color:var(--muted);line-height:1.7}
.tv-shield{
  display:flex;align-items:center;gap:16px;background:#fff;border:1px solid var(--line-2);
  border-radius:14px;padding:18px;box-shadow:var(--sh-sm);
}
.tv-shield .ts-i{width:52px;height:52px;border-radius:14px;background:var(--grad);color:#fff;display:flex;align-items:center;justify-content:center;flex:none}
.tv-shield .ts-i svg{width:25px;height:25px}
.tv-shield b{display:block;font-size:15px;font-weight:800;color:var(--ink)}
.tv-shield span{font-size:12px;color:var(--muted)}

/* 热门功能 */
.hot-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.hot-card{
  background:#fff;border:1px solid var(--line-2);border-radius:var(--r-lg);
  padding:34px 32px;box-shadow:var(--sh-sm);position:relative;
  transition:transform .3s ease,box-shadow .3s ease;
}
.hot-card:hover{transform:translateY(-5px);box-shadow:var(--sh)}
.hot-card::after{
  content:"";position:absolute;top:0;right:0;width:190px;height:190px;border-radius:50%;
  background:radial-gradient(circle at 72% 28%,rgba(46,125,246,.10),transparent 68%);pointer-events:none;
}
.hot-card .hc-head{display:flex;align-items:center;gap:14px;margin-bottom:20px}
.hot-card .hc-i{
  width:48px;height:48px;border-radius:14px;background:var(--grad);color:#fff;
  display:flex;align-items:center;justify-content:center;box-shadow:0 8px 20px rgba(46,125,246,.3);flex:none;
}
.hot-card .hc-i svg{width:23px;height:23px}
.hot-card h3{font-size:19px;font-weight:800;color:var(--ink);line-height:1.4}
.hot-card .hc-sub{font-size:13px;color:var(--muted);margin-top:3px}
.hot-list{list-style:none}
.hot-list li{
  display:flex;gap:11px;align-items:flex-start;padding:8.5px 0;
  font-size:14.2px;color:var(--body);line-height:1.75;border-bottom:1px dashed var(--line-2);
}
.hot-list li:last-child{border-bottom:none}
.hot-list li .ck{
  width:20px;height:20px;border-radius:50%;background:var(--p-tint);color:var(--p-2);
  display:flex;align-items:center;justify-content:center;flex:none;margin-top:4px;
}
.hot-list li .ck svg{width:12px;height:12px}

/* 报表与亮点 */
.report-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px;align-items:stretch}
.report-card{
  background:#fff;border:1px solid var(--line-2);border-radius:var(--r-lg);
  box-shadow:var(--sh-sm);padding:38px 36px;
  transition:transform .3s ease,box-shadow .3s ease;
}
.report-card:hover{transform:translateY(-4px);box-shadow:var(--sh)}
.report-card .rc-head{display:flex;align-items:center;gap:14px;margin-bottom:22px}
.report-card .rc-i{
  width:50px;height:50px;border-radius:14px;background:var(--grad);color:#fff;
  display:flex;align-items:center;justify-content:center;box-shadow:0 8px 20px rgba(46,125,246,.28);flex:none;
}
.report-card .rc-i svg{width:24px;height:24px}
.report-card h3{font-size:19px;font-weight:800;color:var(--ink)}
.report-card .rc-sub{font-size:13px;color:var(--muted)}
.report-card .rc-lead{font-size:14.5px;line-height:2;color:var(--body);margin-bottom:18px}
.report-list{list-style:none;display:grid;grid-template-columns:1fr 1fr;gap:10px 22px}
.report-list li{display:flex;gap:10px;align-items:flex-start;font-size:13.8px;color:var(--body);line-height:1.7}
.report-list li .ck{
  width:20px;height:20px;border-radius:50%;background:var(--c-tint);color:var(--c);
  display:flex;align-items:center;justify-content:center;flex:none;margin-top:3px;
}
.report-list li .ck svg{width:12px;height:12px}
.rc-tags{display:flex;flex-wrap:wrap;gap:9px;margin-top:22px}
.rc-tag{font-size:12.5px;font-weight:600;color:var(--p-2);background:var(--p-tint);border:1px solid var(--line);padding:6px 14px;border-radius:999px}

/* 适用机构 */
.app-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:44px;align-items:center}
.app-card{
  background:#fff;border:1px solid var(--line-2);border-radius:var(--r-lg);
  box-shadow:var(--sh);padding:40px 42px;
}
.app-card h3{font-size:19px;font-weight:800;color:var(--ink);margin-bottom:14px;display:flex;align-items:center;gap:10px}
.app-card h3 svg{width:20px;height:20px;color:var(--p)}
.app-card p{font-size:14.3px;line-height:2;color:var(--body);margin-bottom:16px}
.app-card p b{color:var(--p-2)}
.app-tags{display:flex;flex-wrap:wrap;gap:9px;margin-bottom:6px}
.app-ver{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}
.ver-chip{
  display:inline-flex;align-items:center;gap:7px;
  background:var(--grad-soft);border:1px solid var(--line-2);border-radius:12px;
  padding:11px 16px;font-size:13px;font-weight:700;color:var(--p-2);
}
.ver-chip svg{width:15px;height:15px}
.app-highlight{
  background:var(--grad);border-radius:var(--r-lg);padding:42px 40px;color:#fff;
  box-shadow:var(--sh-lg);position:relative;overflow:hidden;
}
.app-highlight::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.18) 1px,transparent 1px);
  background-size:22px 22px;
}
.app-highlight .ah-in{position:relative}
.app-highlight h3{font-size:22px;font-weight:800;margin-bottom:14px;display:flex;align-items:center;gap:10px}
.app-highlight h3 svg{width:22px;height:22px}
.app-highlight p{font-size:14.3px;line-height:2;opacity:.95;margin-bottom:16px}
.app-highlight .ah-num{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:8px}
.ah-item{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.25);border-radius:12px;padding:14px 16px;backdrop-filter:blur(4px)}
.ah-item b{display:block;font-size:17px;font-weight:800;line-height:1.3}
.ah-item span{font-size:12px;opacity:.9}

/* CTA */
.cta-band{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  background:var(--grad);box-shadow:var(--sh-lg);padding:64px 56px;text-align:center;
}
.cta-band::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.2) 1px,transparent 1px);
  background-size:24px 24px;
}
.cta-band::after{
  content:"";position:absolute;top:0;right:0;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle at 82% 8%,rgba(255,255,255,.20),transparent 60%);
}
.cta-in{position:relative;z-index:1}
.cta-band h2{font-size:clamp(26px,3.6vw,38px);font-weight:800;color:#fff;line-height:1.4;letter-spacing:.5px}
.cta-band p{margin:14px auto 0;font-size:15.5px;color:rgba(255,255,255,.92);max-width:560px;line-height:1.9}
.cta-actions{display:flex;justify-content:center;gap:16px;margin-top:34px;flex-wrap:wrap}
.btn-w{background:#fff;color:var(--p-2);box-shadow:0 10px 28px rgba(13,42,78,.22)}
.btn-w:hover{transform:translateY(-2px);box-shadow:0 16px 36px rgba(13,42,78,.28)}
.btn-o{background:rgba(255,255,255,.12);color:#fff;border:1.5px solid rgba(255,255,255,.55)}
.btn-o:hover{background:rgba(255,255,255,.22);transform:translateY(-2px)}
.cta-tips{margin-top:22px;font-size:12.5px;color:rgba(255,255,255,.8);letter-spacing:1px}

/* 页脚 */
.footer{background:var(--ink);color:rgba(255,255,255,.72);padding:64px 0 34px;margin-top:96px}
.footer-in{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:48px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.1)}
.footer .brand{color:#fff}
.footer .brand em{color:rgba(255,255,255,.55)}
.footer-desc{margin-top:18px;font-size:13.8px;line-height:1.95;max-width:360px}
.footer h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:18px;letter-spacing:1px}
.footer-links{list-style:none}
.footer-links li{margin-bottom:11px}
.footer-links a{font-size:13.8px;color:rgba(255,255,255,.66);transition:color .2s ease}
.footer-links a:hover{color:#fff}
.footer-slogan{
  display:flex;align-items:center;gap:10px;font-size:14px;font-weight:700;color:#fff;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);
  border-radius:12px;padding:14px 18px;
}
.footer-slogan svg{width:18px;height:18px;color:var(--c);flex:none}
.footer-bottom{margin-top:26px;text-align:center;font-size:12.5px;color:rgba(255,255,255,.45);letter-spacing:1px}

/* Toast & 返回顶部 */
.toast{
  position:fixed;left:50%;bottom:36px;transform:translate(-50%,80px);z-index:200;
  background:var(--ink);color:#fff;font-size:14px;font-weight:600;
  padding:14px 26px;border-radius:999px;box-shadow:0 18px 44px rgba(13,42,78,.35);
  opacity:0;transition:transform .4s cubic-bezier(.22,.9,.32,1),opacity .4s ease;
  display:flex;align-items:center;gap:10px;max-width:92vw;
}
.toast.show{transform:translate(-50%,0);opacity:1}
.toast svg{width:17px;height:17px;color:var(--c);flex:none}
.totop{
  position:fixed;right:28px;bottom:28px;z-index:90;
  width:46px;height:46px;border-radius:14px;background:#fff;border:1px solid var(--line);
  box-shadow:var(--sh);display:flex;align-items:center;justify-content:center;color:var(--p-2);
  opacity:0;pointer-events:none;transform:translateY(12px);
  transition:opacity .3s ease,transform .3s ease;
}
.totop.show{opacity:1;pointer-events:auto;transform:translateY(0)}
.totop svg{width:20px;height:20px}

/* 滚动显现 */
.rv{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s cubic-bezier(.22,.9,.32,1)}
.rv.in{opacity:1;transform:translateY(0)}
.rv-d1{transition-delay:.08s}.rv-d2{transition-delay:.16s}.rv-d3{transition-delay:.24s}.rv-d4{transition-delay:.32s}
@media (prefers-reduced-motion:reduce){
  .rv{opacity:1;transform:none;transition:none}
  .tab-panel.on{animation:none}
}

/* 响应式 */
@media (max-width:1080px){
  .hero-grid{grid-template-columns:1fr;gap:64px}
  .mock-wrap{max-width:640px;margin:0 auto;width:100%}
  .core-grid{grid-template-columns:repeat(2,1fr)}
  .feat-grid{grid-template-columns:repeat(3,1fr)}
  .fc-1{left:-8px}
  .fc-2{left:-8px}
  .app-grid{grid-template-columns:1fr}
}
@media (max-width:860px){
  .nav-links,.nav-cta .btn-sm{display:none}
  .nav-burger{display:flex}
  .about-in{grid-template-columns:1fr;gap:34px}
  .stats{grid-template-columns:repeat(2,1fr)}
  .feat-grid{grid-template-columns:repeat(2,1fr)}
  .tab-card{grid-template-columns:1fr;gap:30px;padding:36px 30px}
  .hot-grid{grid-template-columns:1fr}
  .report-grid{grid-template-columns:1fr}
  .footer-in{grid-template-columns:1fr;gap:32px}
  .hero{padding-top:132px}
  .about-card{padding:38px 28px}
  .cta-band{padding:52px 30px}
}
@media (max-width:560px){
  .container{padding:0 20px}
  .sec{padding:64px 0}
  .hero{padding-top:122px}
  .hero-quick{grid-template-columns:1fr}
  .core-grid{grid-template-columns:1fr}
  .feat-grid{grid-template-columns:1fr}
  .report-list{grid-template-columns:1fr}
  .mock{padding:14px;transform:none}
  .mock-stats{grid-template-columns:repeat(3,1fr);gap:7px}
  .mock-bottom{grid-template-columns:1fr}
  .float-chip{display:none}
  /* 课表在窄屏下横向滚动，避免文字被裁 */
  .mock-sched{overflow-x:auto}
  .sched-head,.sched-body{min-width:auto}
  .tab-btn{padding:9px 15px;font-size:13.5px}
  .tabs-nav{justify-content:flex-start;flex-wrap:nowrap;overflow-x:auto;padding-bottom:8px;-webkit-overflow-scrolling:touch}
  .tabs-nav::-webkit-scrollbar{display:none}
  .app-card{padding:30px 26px}
  .app-highlight{padding:32px 26px}
  .cta-band{padding:44px 24px}
  .ah-num{grid-template-columns:1fr}
  .btn-lg{width:100%}
  .nav-burger{width:46px;height:46px}
  /* 移动端正文可读性提升 */
  .hero-badge{font-size:14px}
  .hero-note{font-size:14px}
  .quick p{font-size:14px}
  .mock-title{font-size:13px}
  .tag{font-size:13.5px}
  .stat span{font-size:13.5px}
  .hc-sub,.rc-sub{font-size:13.5px}
  .rc-tag{font-size:13px}
  .ver-chip{font-size:13.5px}
  .tc-chip{font-size:14px}
  .tv-card span,.tv-msg p{font-size:12.5px}
  .cta-tips{font-size:13px}
  .footer-links a,.footer-desc{font-size:14px}
  .footer-bottom{font-size:13px}
}