@charset "utf-8";
/* ==========================================================================
   上海品茶工作室 · UI v3
   Template: BENTO VIOLET  /  浅色 bento 网格 · 左轴分栏首屏
   01 令牌 02 基础 03 通告跑马灯 04 导航 05 首屏分栏+2x2拼贴+数据带
   06 区块通用 07 Bento 服务网格 08 文章双列卡 09 FAQ 左轴双栏
   10 横向 CTA 11 页脚 12 文章页 13 响应式
   ========================================================================== */

/* ---------- 01 令牌 ---------- */
:root{
  --bg:#F5F5F8; --surface:#FFFFFF; --surface2:#FAFAFC; --ink-bar:#141420;
  --line:#E6E6EE; --line2:#EFEFF4;
  --violet:#6D28D9; --violet-deep:#5B21B6; --violet-soft:#8B5CF6;
  --orange:#F97316; --orange-soft:#FB923C;
  --ink:#141420; --text:#4A4A57; --dim:#7A7A8C;
  --r1:12px; --r2:16px; --r3:20px; --r4:24px;
  --sh:0 1px 2px rgba(20,20,32,.04), 0 10px 26px -18px rgba(20,20,32,.2);
  --sh-h:0 2px 6px rgba(20,20,32,.05), 0 26px 54px -26px rgba(109,40,217,.36);
  --max:1200px;
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}

/* ---------- 02 基础 ---------- */
*,::before,::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);
  font:400 16px/1.78 var(--font);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overflow-x:hidden}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4,p{margin:0}
h1,h2,h3,h4{color:var(--ink);font-weight:700;line-height:1.3;letter-spacing:-.018em}
ul{margin:0;padding:0;list-style:none}
::selection{background:rgba(109,40,217,.2)}
:focus-visible{outline:2px solid var(--orange);outline-offset:3px;border-radius:6px}
.nowrap{white-space:nowrap}
.page{position:relative;z-index:1}
.pad{width:100%;max-width:var(--max);margin:0 auto;padding:0 20px}
.a11y{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip-to{position:absolute;left:-9999px}
.skip-to:focus{left:18px;top:14px;z-index:80;background:var(--surface);color:var(--violet);
  padding:10px 18px;border-radius:var(--r1);box-shadow:var(--sh)}

/* ---------- 03 通告跑马灯 ---------- */
.bar{background:var(--ink-bar);color:rgba(255,255,255,.88);overflow:hidden;position:relative}
.bar-track{display:flex;width:max-content;white-space:nowrap;padding:9px 0;font-size:13px;
  animation:barslide 30s linear infinite}
.bar-track span{padding:0 20px;display:inline-flex;align-items:center;gap:8px}
.bar-track span::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--orange-soft);flex:none}
@keyframes barslide{from{transform:translateX(0)}to{transform:translateX(-50%)}}

/* ---------- 04 导航 ---------- */
.nav{position:sticky;top:0;z-index:40;background:rgba(255,255,255,.9);
  backdrop-filter:saturate(180%) blur(14px);-webkit-backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid var(--line)}
.nav-in{display:flex;align-items:center;gap:16px;height:68px;max-width:var(--max);margin:0 auto;padding:0 20px}
.mark{display:flex;align-items:center;gap:10px;font-weight:700;font-size:16px;color:var(--ink);
  letter-spacing:-.012em;white-space:nowrap;flex:none}
.mark i{width:30px;height:30px;border-radius:10px;flex:none;position:relative;
  background:linear-gradient(135deg,var(--violet),var(--orange))}
.mark i::after{content:"";position:absolute;inset:9px;border-radius:4px;border:2px solid #fff}
.menu{display:flex;gap:2px;flex:1;overflow-x:auto;scrollbar-width:none;-webkit-overflow-scrolling:touch}
.menu::-webkit-scrollbar{display:none}
.menu a{padding:9px 14px;border-radius:var(--r1);font-size:15px;color:var(--dim);white-space:nowrap;
  position:relative;transition:color .18s,background .18s}
.menu a:hover{color:var(--violet);background:rgba(109,40,217,.06)}
.menu a::after{content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--violet),var(--orange));transform:scaleX(0);transform-origin:left;
  transition:transform .22s}
.menu a:hover::after{transform:scaleX(1)}
.nav-btn{flex:none;display:inline-flex;align-items:center;height:42px;padding:0 22px;border-radius:999px;
  background:var(--ink);color:#fff;font-size:14.5px;font-weight:600;letter-spacing:.01em;
  transition:background .18s,transform .18s,box-shadow .18s}
.nav-btn:hover{background:var(--violet);transform:translateY(-1px);box-shadow:0 12px 24px -12px rgba(109,40,217,.8)}

/* ---------- 05 首屏 ---------- */
.hero{padding:56px 0 64px;background:
  radial-gradient(720px 420px at 96% -12%,rgba(109,40,217,.1),transparent 62%),
  radial-gradient(560px 340px at 2% 8%,rgba(249,115,22,.09),transparent 60%),var(--bg)}
.hero-in{display:grid;gap:40px;align-items:center}
.kicker{display:inline-flex;align-items:center;gap:9px;padding:7px 15px;border-radius:999px;font-size:13px;
  font-weight:600;color:var(--violet);background:rgba(109,40,217,.07);border:1px solid rgba(109,40,217,.2)}
.kicker b{width:6px;height:6px;border-radius:50%;background:var(--orange);flex:none}
.hero-title{margin-top:24px;font-size:clamp(28px,5.8vw,52px);letter-spacing:-.035em;line-height:1.16}
.lede{margin-top:22px;max-width:600px;font-size:16.5px;color:var(--text)}
.hero-btns{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.btn{display:inline-flex;align-items:center;justify-content:center;height:50px;padding:0 26px;border-radius:var(--r1);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:transform .18s,background .18s,border-color .18s,box-shadow .18s}
.btn-fill{background:var(--violet);color:#fff;box-shadow:0 16px 32px -16px rgba(109,40,217,.85)}
.btn-fill:hover{background:var(--violet-deep);transform:translateY(-2px)}
.btn-out{background:var(--surface);color:var(--ink);border-color:var(--line);box-shadow:var(--sh)}
.btn-out:hover{border-color:rgba(249,115,22,.55);color:var(--violet);transform:translateY(-2px)}

.mosaic{display:grid;grid-template-columns:1.1fr 1fr;grid-template-rows:auto auto;gap:14px}
.mosaic figure{margin:0;overflow:hidden;border-radius:var(--r3);border:1px solid var(--line);
  background:var(--surface2);box-shadow:var(--sh)}
.mosaic figure:nth-child(1){grid-row:1/3;position:relative}
.mosaic figure:nth-child(1) img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.mosaic figure:nth-child(2) img,.mosaic figure:nth-child(3) img{width:100%;aspect-ratio:1/1;object-fit:cover}

.ribbon{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;margin-top:48px;background:var(--line);
  border:1px solid var(--line);border-radius:var(--r3);overflow:hidden}
.ribbon > div{background:var(--surface);padding:22px 20px}
.ribbon b{display:block;font-size:clamp(21px,3.6vw,29px);color:var(--ink);letter-spacing:-.04em;
  font-variant-numeric:tabular-nums}
.ribbon b i{font-style:normal;color:var(--orange)}
.ribbon span{display:block;margin-top:6px;font-size:12.8px;color:var(--dim)}

/* ---------- 06 区块通用 ---------- */
.sec{padding:78px 0}
.sec.alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{max-width:680px;margin-bottom:42px}
.tagline{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:700;letter-spacing:.2em;
  text-transform:uppercase;color:var(--orange)}
.tagline::before{content:"";width:22px;height:1.5px;background:currentColor}
.sec-head h2{margin-top:14px;font-size:clamp(23px,4.4vw,34px);letter-spacing:-.03em}
.sec-head p{margin-top:16px;font-size:15.5px;color:var(--dim)}

/* ---------- 07 Bento 服务网格 ---------- */
.bento{display:grid;grid-template-columns:1fr;gap:16px}
.cell{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--r4);
  padding:26px;box-shadow:var(--sh);overflow:hidden;
  transition:transform .22s,box-shadow .22s,border-color .22s;display:flex;flex-direction:column}
.cell:hover{transform:translateY(-4px);box-shadow:var(--sh-h);border-color:rgba(109,40,217,.34)}
.cell::before{content:"";position:absolute;right:-40px;top:-40px;width:120px;height:120px;border-radius:50%;
  background:radial-gradient(circle,rgba(109,40,217,.09),transparent 70%);pointer-events:none}
.cell-no{font-size:13px;font-weight:700;letter-spacing:.16em;color:var(--orange)}
.cell h3{margin-top:14px;font-size:18px;letter-spacing:-.02em}
.cell p{margin-top:12px;font-size:14.7px;color:var(--dim)}
.cell-media{margin:-26px -26px 22px;background:var(--surface2);overflow:hidden}
.cell-media img{width:100%;aspect-ratio:16/11;object-fit:cover}
.cell ul{margin-top:16px;display:grid;gap:9px}
.cell li{position:relative;padding-left:18px;font-size:14.3px;color:var(--dim)}
.cell li::before{content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:2px;
  background:linear-gradient(135deg,var(--violet),var(--orange))}

/* ---------- 08 文章双列卡 ---------- */
.feed{display:grid;grid-template-columns:1fr;gap:20px}
.post{position:relative;display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r3);overflow:hidden;box-shadow:var(--sh);
  transition:transform .22s,box-shadow .22s,border-color .22s}
.post:hover{transform:translateY(-4px);box-shadow:var(--sh-h);border-color:rgba(109,40,217,.34)}
.post-media{margin:0;background:var(--surface2);overflow:hidden;position:relative}
.post-media img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .5s ease}
.post:hover .post-media img{transform:scale(1.035)}
.post-no{position:absolute;left:16px;top:12px;font-size:38px;font-weight:800;line-height:1;
  letter-spacing:-.05em;color:transparent;-webkit-text-stroke:1.4px rgba(255,255,255,.7)}
.post-body{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1}
.post time{font-size:12.6px;font-weight:600;letter-spacing:.07em;color:var(--violet);
  font-variant-numeric:tabular-nums}
.post h3{margin-top:10px;font-size:18.5px;letter-spacing:-.022em;line-height:1.45}
.post h3 a:hover{color:var(--violet)}
.post p{margin-top:12px;font-size:14.6px;color:var(--dim);flex:1}
.post-link{margin-top:18px;display:inline-flex;align-items:center;gap:7px;font-size:14.5px;font-weight:600;
  color:var(--orange);transition:gap .2s}
.post-link:hover{gap:12px}

/* ---------- 09 FAQ 左轴双栏 ---------- */
.faq{display:grid;gap:28px}
.faq-side{max-width:420px}
.faq-side h2{margin-top:14px;font-size:clamp(22px,4vw,31px);letter-spacing:-.03em}
.faq-side p{margin-top:16px;font-size:15.4px;color:var(--dim)}
.faq-cta{margin-top:24px}
.faq-list{display:grid;gap:12px}
.q{background:var(--surface);border:1px solid var(--line);border-radius:var(--r2);padding:0 22px;
  box-shadow:var(--sh);transition:border-color .2s,box-shadow .2s}
.q:hover{border-color:rgba(109,40,217,.3)}
.q[open]{border-color:rgba(109,40,217,.5);box-shadow:var(--sh-h)}
.q summary{cursor:pointer;list-style:none;padding:20px 0;font-weight:600;font-size:15.6px;color:var(--ink);
  display:flex;justify-content:space-between;gap:16px;align-items:center;transition:color .18s}
.q summary::-webkit-details-marker{display:none}
.q summary:hover{color:var(--violet)}
.q summary::after{content:"＋";flex:none;color:var(--orange);font-size:17px;line-height:1}
.q[open] summary::after{content:"－"}
.q .a{padding:0 0 22px;font-size:14.8px;color:var(--dim);border-top:1px solid var(--line2);padding-top:16px}

/* ---------- 10 横向 CTA ---------- */
.cta{position:relative;overflow:hidden;border-radius:var(--r4);border:1px solid var(--line);
  background:linear-gradient(118deg,rgba(109,40,217,.1),rgba(249,115,22,.09) 62%,rgba(109,40,217,.06)),var(--surface);
  box-shadow:var(--sh-h);padding:44px 30px}
.cta::after{content:"";position:absolute;inset:0;pointer-events:none;opacity:.6;
  background:repeating-linear-gradient(115deg,transparent 0 20px,rgba(109,40,217,.05) 20px 40px)}
.cta-in{position:relative;display:grid;gap:24px}
.cta-copy h2{font-size:clamp(22px,4.2vw,32px);letter-spacing:-.03em}
.cta-copy p{margin-top:14px;max-width:560px;font-size:15.8px;color:var(--text)}
.cta-acts{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- 11 页脚 ---------- */
.foot{background:var(--surface);border-top:1px solid var(--line);padding:56px 0 28px}
.foot-grid{display:grid;gap:30px}
.foot-col h4{font-size:12.6px;letter-spacing:.16em;text-transform:uppercase;color:var(--dim);margin-bottom:16px}
.foot-brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:16px;color:var(--ink);margin-bottom:14px}
.foot-brand i{width:28px;height:28px;border-radius:9px;flex:none;
  background:linear-gradient(135deg,var(--violet),var(--orange))}
.foot-note{max-width:360px;font-size:14.4px;color:var(--dim);line-height:1.85}
.foot-links{display:grid;gap:11px}
.foot-links a{font-size:14.4px;color:var(--text);transition:color .18s}
.foot-links a:hover{color:var(--violet)}
.foot-bottom{margin-top:40px;padding-top:20px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;
  gap:8px 18px;justify-content:space-between;font-size:12.9px;color:var(--dim)}

/* ---------- 12 文章页 ---------- */
.article{padding:40px 0 68px}
.crumb{font-size:13px;color:var(--dim);margin-bottom:22px}
.crumb a:hover{color:var(--violet)}
.crumb span{color:var(--text)}
.art-head{max-width:800px}
.art-head h1{font-size:clamp(24px,4.8vw,37px);letter-spacing:-.032em}
.art-meta{margin-top:16px;display:flex;flex-wrap:wrap;gap:8px 16px;align-items:center;font-size:13px;color:var(--dim)}
.art-meta b{color:var(--orange);font-weight:600;letter-spacing:.06em}
.art-meta em{font-style:normal;color:var(--violet);font-weight:600}
.art-hero{margin:30px 0;border-radius:var(--r4);overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--sh);background:var(--surface2)}
.art-hero img{width:100%;aspect-ratio:16/10;object-fit:cover}
.content{max-width:800px}
.content h2{margin:42px 0 14px;font-size:clamp(19px,3.5vw,25px);letter-spacing:-.026em;
  padding-left:16px;border-left:3px solid var(--violet);line-height:1.4}
.content h3{margin:28px 0 10px;font-size:17.4px;color:var(--violet-deep)}
.content p{margin:14px 0;font-size:16.1px}
.content ul{margin:14px 0;padding-left:20px;display:grid;gap:9px;list-style:disc}
.content li{font-size:15.5px}
.content li::marker{color:var(--orange)}
.content strong{color:var(--ink);font-weight:600}
.box{margin:26px 0;padding:20px 22px;border-radius:var(--r3);background:var(--surface);
  border:1px solid var(--line);border-left:3px solid var(--orange);font-size:15px;color:var(--text);box-shadow:var(--sh)}
.box b{color:var(--violet)}
.back{margin-top:40px;display:inline-flex;align-items:center;gap:8px;font-weight:600;color:var(--violet);
  font-size:15px;transition:gap .2s}
.back:hover{gap:13px}

/* ---------- 13 响应式 ---------- */
@media(min-width:700px){
  .ribbon{grid-template-columns:repeat(4,1fr)}
  .bento{grid-template-columns:repeat(2,1fr);gap:18px}
  .cell.big{grid-column:span 2}
  .feed{grid-template-columns:repeat(2,1fr);gap:22px}
  .foot-grid{grid-template-columns:1.5fr 1fr 1fr 1fr}
}
@media(min-width:1020px){
  .hero{padding:68px 0 78px}
  .hero-in{grid-template-columns:1.04fr .96fr;gap:60px}
  .bento{grid-template-columns:repeat(4,1fr);gap:18px}
  .cell.big{grid-column:span 2;grid-row:span 2}
  .faq{grid-template-columns:.86fr 1.14fr;gap:54px;align-items:start}
  .faq-side{position:sticky;top:110px}
  .cta{padding:52px 46px}
  .cta-in{grid-template-columns:1.3fr auto;align-items:center;gap:40px}
}
@media(max-width:560px){
  .nav-btn{display:none}
  .mosaic{gap:10px}
  .ribbon > div{padding:18px 16px}
  .cell{padding:22px}
  .cell-media{margin:-22px -22px 20px}
  .post-no{font-size:30px}
  .cta{padding:34px 22px}
}
@media(prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
  .bar{overflow-x:auto}
}