/* ============ TsWorks Pro · 干净官网设计系统 ============
   纯白底 · 单一蓝色强调 · 发丝线 · 大留白 · 克制的动效 */
:root{
  --bg:#ffffff;
  --soft:#f7f8fa;
  --ink:#111318;
  --ink-2:#4b5563;
  --ink-3:#8b93a1;
  --line:#e8eaee;
  --line-2:#d3d7de;
  --blue:#0a84ff;
  --blue-deep:#0066d8;
  --r:10px;
  --maxw:1024px;
  --shadow-s:0 1px 2px rgba(16,24,40,.05);
  --shadow-m:0 8px 24px rgba(16,24,40,.08);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"SF Pro Text","PingFang SC","Segoe UI","Helvetica Neue","Microsoft YaHei",Arial,sans-serif;
  background:var(--bg);color:var(--ink);line-height:1.7;
  -webkit-font-smoothing:antialiased;font-size:15px;letter-spacing:.01em;
}
main{min-height:60vh}
a{color:inherit;text-decoration:none}
img{max-width:100%}
i[class^="ri-"]{line-height:1;font-size:1.05em}
::selection{background:rgba(10,132,255,.22)}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* ---------- 顶部导航 ---------- */
header{
  position:fixed;top:0;left:0;right:0;z-index:50;height:60px;
  background:rgba(255,255,255,.86);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  transition:box-shadow .25s,border-color .25s;border-bottom:1px solid transparent;
}
header.scrolled{border-bottom-color:var(--line);box-shadow:0 1px 0 rgba(16,24,40,.02)}
.nav{display:flex;align-items:center;height:60px}
.logo{display:flex;align-items:center;gap:9px;font-size:15.5px;font-weight:700;letter-spacing:-.01em}
.logo img{height:24px;width:auto}
.logo b{font-weight:800}
.nav .links{display:flex;align-items:center;gap:4px;margin-left:44px;font-size:14px;color:var(--ink-2)}
.nav .links a{padding:6px 12px;border-radius:7px;transition:background .15s,color .15s}
.nav .links a:hover{color:var(--ink);background:var(--soft)}
.nav .links a.on{color:var(--ink);font-weight:600}
.nav .cta{
  margin-left:auto;display:inline-flex;align-items:center;gap:7px;
  padding:8px 16px;border-radius:8px;font-size:13.5px;font-weight:600;
  background:var(--ink);color:#fff;transition:background .18s,transform .18s;
}
.nav .cta:hover{background:#000;transform:translateY(-1px)}
.nav-burger{
  display:none;margin-left:auto;width:36px;height:36px;border-radius:8px;
  border:1px solid var(--line-2);background:#fff;color:var(--ink);
  place-items:center;cursor:pointer;font-size:16px;flex:none;
}

/* ---------- Hero ---------- */
.hero{padding:150px 0 84px;text-align:center}
.badge{
  display:inline-flex;align-items:center;gap:7px;padding:5px 13px;border-radius:999px;
  font-size:12.5px;color:var(--ink-2);background:var(--soft);border:1px solid var(--line);
}
.badge .dot{width:6px;height:6px;border-radius:50%;background:var(--blue)}
.hero h1{
  font-size:clamp(38px,5.6vw,58px);font-weight:800;letter-spacing:-.035em;line-height:1.12;
  margin-top:26px;color:var(--ink);
}
.hero h1 em{font-style:normal;color:var(--blue)}
.hero .sub{max-width:540px;margin:18px auto 0;font-size:16px;color:var(--ink-2);line-height:1.8}
.hero-actions{display:flex;justify-content:center;gap:10px;margin-top:34px;flex-wrap:wrap}
.hero-meta{margin-top:26px;font-size:12.5px;color:var(--ink-3)}
.hero-meta i{margin:0 10px;font-weight:300}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 26px;border-radius:9px;font-size:14.5px;font-weight:600;
  transition:background .18s,transform .18s,box-shadow .18s,border-color .18s;cursor:pointer;
}
.btn i{font-size:16px}
.btn-pri{background:var(--ink);color:#fff}
.btn-pri:hover{background:#000;transform:translateY(-1px);box-shadow:var(--shadow-m)}
.btn-ghost{background:#fff;color:var(--ink);border:1px solid var(--line-2)}
.btn-ghost:hover{border-color:var(--ink);transform:translateY(-1px)}

/* ---------- 区块 ---------- */
section{padding:96px 0}
section.soft{background:var(--soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
section.tight{padding-top:0}
.sec-head{text-align:center;max-width:560px;margin:0 auto 52px}
.sec-head .kicker{font-size:12px;font-weight:700;color:var(--blue);letter-spacing:.08em;margin-bottom:10px}
.sec-head h2{font-size:clamp(26px,3.4vw,34px);font-weight:800;letter-spacing:-.025em;line-height:1.25}
.sec-head p{margin-top:12px;color:var(--ink-2);font-size:15px}
.sec-more{display:block;text-align:center;margin-top:44px}
.sec-more a{font-size:14px;font-weight:600;color:var(--ink-2);display:inline-flex;align-items:center;gap:6px;transition:color .15s}
.sec-more a:hover{color:var(--blue)}

/* ---------- 卡片 ---------- */
.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.card{
  background:#fff;border:1px solid var(--line);border-radius:12px;padding:24px 22px;
  transition:transform .2s,box-shadow .2s,border-color .2s;
}
.card:hover{transform:translateY(-3px);border-color:var(--line-2);box-shadow:var(--shadow-m)}
.card .ico{
  width:38px;height:38px;border-radius:9px;display:grid;place-items:center;
  background:var(--soft);border:1px solid var(--line);color:var(--ink);font-size:18px;margin-bottom:16px;
}
.card h3{font-size:15px;font-weight:700;margin-bottom:6px}
.card p{font-size:13.5px;color:var(--ink-2);line-height:1.7}

/* ---------- 三步 ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:40px;max-width:860px;margin:0 auto}
.step .num{font-size:26px;font-weight:800;color:var(--line-2);letter-spacing:-.02em}
.step h3{font-size:15px;font-weight:700;margin:12px 0 6px}
.step p{font-size:13.5px;color:var(--ink-2)}

/* ---------- 尾部 CTA ---------- */
.cta-end{text-align:center}
.cta-end h2{font-size:clamp(24px,3vw,32px);font-weight:800;letter-spacing:-.02em}
.cta-end p{margin-top:10px;color:var(--ink-2);font-size:15px}
.cta-end .hero-actions{margin-top:28px}

/* ---------- 子页 hero ---------- */
.page-hero{padding:132px 0 44px;text-align:center}
.page-hero h1{font-size:clamp(32px,4.4vw,44px);font-weight:800;letter-spacing:-.03em}
.page-hero p{margin-top:14px;color:var(--ink-2);font-size:15px;max-width:520px;margin-left:auto;margin-right:auto}
.page-hero a{color:var(--blue);font-weight:600}

/* ---------- 特性详解 ---------- */
.feat{display:grid;grid-template-columns:1fr 300px;gap:56px;align-items:center;padding:44px 0}
.feat+.feat{border-top:1px solid var(--line)}
.feat.rev .feat-vis{order:-1}
.feat-txt .tag{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:700;color:var(--ink-3);letter-spacing:.06em;margin-bottom:12px}
.feat-txt .tag i{width:30px;height:30px;border-radius:8px;background:var(--soft);border:1px solid var(--line);display:grid;place-items:center;font-size:15px;color:var(--ink)}
.feat-txt h3{font-size:22px;font-weight:800;letter-spacing:-.015em}
.feat-txt>p{margin-top:10px;color:var(--ink-2);font-size:14.5px}
.feat-txt ul{margin-top:18px;display:grid;gap:9px}
.feat-txt li{list-style:none;display:flex;gap:9px;font-size:14px;color:var(--ink-2)}
.feat-txt li i{color:var(--blue);margin-top:4px}
.feat-vis{border:1px solid var(--line);background:var(--soft);border-radius:14px;padding:28px;display:grid;place-items:center;min-height:210px;text-align:center}
.feat-vis i.big{font-size:52px;color:var(--ink);background:none}
.feat-vis .cap{margin-top:16px;font-size:12px;color:var(--ink-3)}
.feat-vis .mock{width:100%;max-width:280px}
.feat-vis .mock .bar{height:8px;border-radius:4px;background:var(--line-2);margin-bottom:9px}
.feat-vis .mock .bar.hl{background:var(--ink)}
.feat-vis .mock .bar.hl-b{background:var(--blue)}

/* ---------- 工作流 ---------- */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.flow .f{
  background:#fff;border:1px solid var(--line);border-radius:12px;padding:20px 18px;position:relative;
  transition:transform .2s,box-shadow .2s,border-color .2s;
}
.flow .f:hover{transform:translateY(-3px);box-shadow:var(--shadow-m);border-color:var(--line-2)}
.flow .f i{font-size:22px;color:var(--ink)}
.flow .f .num{position:absolute;top:18px;right:18px;font-size:12px;font-weight:800;color:var(--ink-3)}
.flow .f h3{font-size:14.5px;font-weight:700;margin:12px 0 5px}
.flow .f p{font-size:12.5px;color:var(--ink-2)}

/* ---------- 能力清单 ---------- */
.caps{display:grid;grid-template-columns:1fr 1fr;gap:12px 40px;max-width:720px;margin:0 auto}
.caps li{
  list-style:none;display:flex;align-items:flex-start;gap:12px;
  background:#fff;border:1px solid var(--line);border-radius:10px;padding:14px 16px;font-size:13.5px;color:var(--ink-2);
}
.caps li b{display:block;font-size:14px;color:var(--ink);font-weight:650}
.caps li i{flex:none;margin-top:3px;color:var(--blue)}

/* ---------- 下载页 ---------- */
.dl-box{background:#fff;border:1px solid var(--line);border-radius:16px;padding:26px}
.dl-list{margin-top:4px}
.dl-list-head{
  display:grid;grid-template-columns:220px 1fr 1fr;gap:16px;padding:12px 4px;
  font-size:11px;font-weight:700;color:var(--ink-3);letter-spacing:.05em;
}
.dl-list-head .pc i{color:var(--ink-3);margin-right:5px;font-size:13px}
.dl-row{
  display:grid;grid-template-columns:220px 1fr 1fr;gap:16px;align-items:center;
  padding:20px 4px;border-top:1px solid var(--line);position:relative;
}
.dl-pl{display:flex;align-items:center;gap:13px;min-width:0}
.dl-pl>i{font-size:22px;flex:none}
.dl-pl .os{font-size:15.5px;font-weight:700;display:flex;align-items:center;gap:8px}
.dl-pl .arch{font-size:12px;color:var(--ink-3);margin-top:1px}
.pc{min-width:0;display:flex;flex-direction:column;gap:6px}
.dl-btn{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:10px 14px;border-radius:9px;font-size:13px;font-weight:600;color:var(--ink);
  background:#fff;border:1px solid var(--line-2);transition:all .16s;
}
.dl-btn .fn{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:11.5px;color:var(--ink-2);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-width:0;
}
.dl-btn> i{font-size:15px;color:var(--ink-3);flex:none;transition:transform .16s,color .16s}
.dl-btn:hover{border-color:var(--ink);transform:translateY(-1px);box-shadow:var(--shadow-s)}
.dl-btn:hover> i{color:var(--blue);transform:translateY(2px)}
.dl-btn.pri{background:var(--ink);border-color:var(--ink);color:#fff}
.dl-btn.pri .fn{color:rgba(255,255,255,.72)}
.dl-btn.pri> i{color:rgba(255,255,255,.6)}
.dl-btn.pri:hover{background:#000}
.dl-btn.pri:hover .fn{color:rgba(255,255,255,.95)}
.dl-btn.pri:hover> i{color:#fff}
.pd{font-size:11.5px;color:var(--ink-3);padding:0 2px}
.dl-foot{padding:18px 4px 0;font-size:12.5px;color:var(--ink-3)}
.dl-foot a{color:var(--blue);font-weight:600}

/* ---------- FAQ ---------- */
.faq-group{margin-bottom:44px}
.faq-group>h3{font-size:13px;font-weight:750;color:var(--ink-3);letter-spacing:.04em;margin-bottom:16px}
.faq-group details{border-bottom:1px solid var(--line)}
.faq-group details:first-of-type{margin-top:0}
summary{
  list-style:none;cursor:pointer;padding:18px 2px;font-size:14.5px;font-weight:650;color:var(--ink);
  display:flex;align-items:center;justify-content:space-between;gap:16px;transition:color .15s;
}
summary::-webkit-details-marker{display:none}
summary:hover{color:var(--blue)}
summary::after{
  content:"+";font-size:19px;font-weight:300;color:var(--ink-3);flex:none;
  transition:transform .25s,color .25s;
}
details[open] summary{color:var(--blue)}
details[open] summary::after{transform:rotate(45deg);color:var(--blue)}
.ans{display:grid;grid-template-rows:0fr;opacity:0;transition:grid-template-rows .3s ease,opacity .3s ease}
details[open] .ans{grid-template-rows:1fr;opacity:1}
.ans-in{overflow:hidden;min-height:0}
.ans-in>p,.ans-in>div{padding-bottom:4px}
.ans-in ul{margin-top:10px;display:grid;gap:6px}
.ans-in li{list-style:none;font-size:13.5px;color:var(--ink-2);padding-left:14px;position:relative}
.ans-in li::before{content:"";position:absolute;left:0;top:9px;width:6px;height:1.5px;background:var(--ink-3)}
.ans-in code{font-family:ui-monospace,Menlo,monospace;font-size:12px;background:var(--soft);border:1px solid var(--line);padding:1px 6px;border-radius:5px;color:var(--ink)}

/* ---------- 页脚（瘦） ---------- */
footer{border-top:1px solid var(--line);background:var(--soft);margin-top:40px}
.f-row{
  display:flex;align-items:center;gap:20px;padding:28px 0;flex-wrap:wrap;
}
.f-logo{display:flex;align-items:center;gap:8px;font-size:14px;font-weight:750}
.f-logo img{height:20px;width:auto}
.f-links{display:flex;gap:22px;font-size:13px;color:var(--ink-2);margin-left:auto}
.f-links a{transition:color .15s}
.f-links a:hover{color:var(--blue)}
.f-line{padding:0 0 24px;font-size:12px;color:var(--ink-3)}

/* ---------- 滚动显现（仅 JS 成功运行时才隐藏，防缓存错位导致白屏） ---------- */
html.js [data-reveal]{opacity:0;transform:translateY(16px);transition:opacity .6s ease,transform .6s ease}
html.js [data-reveal].in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html.js [data-reveal]{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
}

/* ---------- 响应式 ---------- */
@media (max-width:960px){
  .grid,.grid-3{grid-template-columns:1fr 1fr}
  .flow{grid-template-columns:1fr 1fr}
  .dl-list-head{display:none}
  .dl-row{grid-template-columns:1fr 1fr;padding:18px 4px}
  .dl-pl{grid-column:1/-1;align-items:flex-start;border-bottom:1px solid var(--line);padding-bottom:14px;margin-bottom:2px}
  .feat{grid-template-columns:1fr;gap:28px;padding:36px 0}
  .feat.rev .feat-vis{order:0}
  .feat-vis{min-height:170px}
}
@media (max-width:860px){
  .nav .links{
    display:none;position:fixed;top:56px;left:12px;right:12px;z-index:49;
    flex-direction:column;gap:2px;padding:10px;border-radius:14px;
    background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-m);
  }
  .nav .links.open{display:flex}
  .nav .links a{padding:10px 14px;font-size:14.5px}
  .nav .cta{display:none}
  .nav-burger{display:grid}
  .hero{padding:120px 0 64px}
  .page-hero{padding:104px 0 36px}
  section{padding:68px 0}
  .caps{grid-template-columns:1fr}
}
@media (max-width:560px){
  .grid,.grid-3,.flow{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr;gap:28px}
  .dl-row{grid-template-columns:1fr}
  .dl-pl{border-bottom:none;padding-bottom:2px}
  .dl-btn{padding:11px 13px}
  .btn{width:100%;max-width:300px}
  .hero-actions .btn{max-width:none}
  .f-row{flex-direction:column;align-items:flex-start;gap:14px}
  .f-links{margin-left:0}
  .dl-box{padding:18px;border-radius:12px}
}