/* 颐学云 — components: product-screenshot mockups, loop diagram,
   logo wall, stats, testimonials, pricing, docs, tables, anchors. */

/* ============ Browser / app chrome (fake screenshots) ============ */
.shot{border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line-2);background:var(--paper);box-shadow:var(--sh-3)}
.shot-bar{display:flex;align-items:center;gap:8px;padding:10px 14px;background:var(--surface-2);border-bottom:1px solid var(--line)}
.shot-bar::after{content:"界面示意";flex:0 0 auto;font-size:.68rem;color:var(--ink-3);border:1px solid var(--line);border-radius:999px;padding:3px 7px;background:var(--paper)}
.shot-dots{display:flex;gap:6px}
.shot-dots i{width:10px;height:10px;border-radius:50%;background:var(--line-2)}
.shot-url{flex:1;background:var(--paper);border:1px solid var(--line);border-radius:6px;padding:4px 10px;
  font-size:.74rem;color:var(--ink-3);font-family:var(--font-mono);max-width:340px;text-align:center;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.shot-body{background:var(--paper)}

/* generic app shell used inside shots */
.app{display:grid;grid-template-columns:188px 1fr;min-height:340px;font-size:.8rem}
.app-side{background:var(--ink);color:#AEB5BF;padding:16px 12px;display:flex;flex-direction:column;gap:3px}
.app-side .app-brand{display:flex;align-items:center;gap:8px;color:#fff;font-weight:600;font-size:.9rem;margin-bottom:14px;padding:0 6px}
.app-side .app-brand .logomark{width:22px;height:22px}
.app-nav{display:flex;align-items:center;gap:9px;padding:8px 10px;border-radius:7px;color:#9AA1AB;font-weight:500}
.app-nav svg{width:16px;height:16px;flex:none}
.app-nav.active{background:rgba(255,255,255,.1);color:#fff}
.app-nav.active svg{color:var(--brand-600)}
.app-side .app-group{font-size:.66rem;letter-spacing:.08em;text-transform:uppercase;color:#5A626C;padding:14px 10px 6px;font-weight:600}
.app-main{padding:18px 20px;background:var(--paper);overflow:hidden}
.app-topbar{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.app-topbar h6{margin:0;font-size:1rem;font-weight:600;color:var(--ink)}
.app-search{display:flex;align-items:center;gap:7px;background:var(--surface);border:1px solid var(--line);border-radius:7px;padding:6px 11px;color:var(--ink-4);font-size:.76rem;width:200px}
.app-search svg{width:14px;height:14px}

/* stat tiles inside app */
.app-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-bottom:16px}
.app-stat{border:1px solid var(--line);border-radius:9px;padding:12px}
.app-stat .lbl{font-size:.7rem;color:var(--ink-3);margin-bottom:5px}
.app-stat .val{font-size:1.4rem;font-weight:600;letter-spacing:-0.02em;color:var(--ink);font-family:var(--font-mono);font-feature-settings:"tnum" 1}
.app-stat .delta{font-size:.68rem;font-weight:600}
.app-stat .delta.up{color:var(--ok)}

/* mini table */
.app-table{width:100%;border-collapse:collapse;font-size:.74rem}
.app-table th{text-align:left;color:var(--ink-3);font-weight:600;padding:8px 10px;border-bottom:1px solid var(--line);font-size:.68rem;text-transform:uppercase;letter-spacing:.03em}
.app-table td{padding:9px 10px;border-bottom:1px solid var(--line);color:var(--ink-2)}
.app-table tr:last-child td{border-bottom:0}
.cellpill{display:inline-flex;align-items:center;gap:5px;padding:2px 8px;border-radius:var(--r-pill);font-size:.68rem;font-weight:600}
.cellpill.ok{background:var(--ok-tint);color:var(--ok)}
.cellpill.warn{background:#FBEFE3;color:var(--warn)}
.cellpill.run{background:var(--brand-tint);color:var(--brand)}
.avatar{width:22px;height:22px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;
  font-size:.62rem;font-weight:700;color:#fff;flex:none}

/* progress bar */
.bar{height:6px;border-radius:4px;background:var(--surface-2);overflow:hidden}
.bar > i{display:block;height:100%;background:var(--brand);border-radius:4px}

/* charts: pure CSS */
.chart-bars{display:flex;align-items:flex-end;gap:9px;height:120px;padding-top:8px}
.chart-bars .cb{flex:1;background:var(--brand-tint-2);border-radius:4px 4px 0 0;position:relative;min-width:8px}
.chart-bars .cb.hi{background:var(--brand)}
.chart-line{position:relative;height:120px}
.donut{width:104px;height:104px;border-radius:50%;
  background:conic-gradient(var(--brand) 0 72%, var(--brand-tint-2) 72% 100%);
  display:flex;align-items:center;justify-content:center}
.donut::after{content:"";position:absolute;width:66px;height:66px;border-radius:50%;background:var(--paper)}
.donut .dn-val{position:relative;font-weight:700;font-size:1.1rem;color:var(--brand-strong);font-family:var(--font-mono)}

/* exam-taking mock */
.exam-shot{padding:20px 22px;background:var(--surface);min-height:300px}
.exam-top{display:flex;align-items:center;justify-content:space-between;background:var(--paper);border:1px solid var(--line);
  border-radius:9px;padding:10px 14px;margin-bottom:14px}
.exam-timer{display:flex;align-items:center;gap:7px;font-family:var(--font-mono);font-weight:600;color:var(--danger);font-size:.92rem}
.exam-q{background:var(--paper);border:1px solid var(--line);border-radius:11px;padding:18px}
.exam-q .qn{font-size:.74rem;color:var(--brand);font-weight:600;margin-bottom:8px}
.exam-q .qt{font-size:.92rem;color:var(--ink);font-weight:500;margin-bottom:14px;line-height:1.5}
.opt{display:flex;align-items:center;gap:10px;padding:11px 13px;border:1px solid var(--line);border-radius:8px;
  margin-bottom:8px;font-size:.84rem;color:var(--ink-2)}
.opt .ok{width:18px;height:18px;border-radius:50%;border:1.5px solid var(--line-2);flex:none}
.opt.sel{border-color:var(--brand);background:var(--brand-tint)}
.opt.sel .ok{border-color:var(--brand);background:var(--brand);box-shadow:inset 0 0 0 3px #fff}

/* proctoring board */
.proc-feed{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.proc-cam{aspect-ratio:4/3;border-radius:8px;background:var(--ink);position:relative;overflow:hidden;border:1px solid #2a2f38}
.proc-cam .glyph{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;color:#3a414c}
.proc-cam .glyph svg{width:30px;height:30px}
.proc-cam .tag{position:absolute;left:6px;top:6px;font-size:.6rem;color:#cfd4da;background:rgba(0,0,0,.5);padding:2px 6px;border-radius:4px;font-weight:600}
.proc-cam.alert{border-color:var(--danger)}
.proc-cam.alert .flag{position:absolute;right:6px;top:6px;width:8px;height:8px;border-radius:50%;background:var(--danger);box-shadow:0 0 0 3px rgba(180,35,24,.25)}
.proc-log{font-size:.72rem}
.proc-log .ev{display:flex;gap:8px;padding:7px 0;border-bottom:1px solid var(--line);color:var(--ink-2)}
.proc-log .ev .t{font-family:var(--font-mono);color:var(--ink-4);flex:none}
.proc-log .ev.alert .dot{color:var(--danger)}
.dot{width:7px;height:7px;border-radius:50%;background:var(--ok);flex:none;margin-top:5px}
.dot.warn{background:var(--warn)}.dot.danger{background:var(--danger)}

/* certificate mock */
.cert{aspect-ratio:1.5/1;border:1px solid var(--line-2);border-radius:10px;background:
  radial-gradient(circle at 100% 0,var(--brand-tint) 0,transparent 40%),var(--paper);
  padding:22px;display:flex;flex-direction:column;justify-content:space-between;position:relative;box-shadow:var(--sh-2)}
.cert .seal{position:absolute;right:20px;bottom:20px;width:60px;height:60px;border-radius:50%;
  border:2px solid var(--brand);color:var(--brand);display:flex;align-items:center;justify-content:center;
  font-size:.6rem;font-weight:700;text-align:center;line-height:1.1}

/* ============ Product pages hero ============ */
body[data-section="product"] .site-header{height:86px}
body[data-section="solutions"] .site-header{height:86px}
body[data-section="product"] .subnav,body[data-section="solutions"] .subnav{top:86px}
body[data-page="pricing"] .site-header{height:86px}
body[data-page="trial"] .site-header{height:86px}
body[data-page="about"] .site-header{height:86px}
body[data-page="docs"] .site-header{height:86px}
body[data-page="legal"] .site-header{height:86px}
body[data-page="customers"] .site-header,body[data-page="ai"] .site-header{height:86px}
body[data-section="product"] .nav,body[data-section="solutions"] .nav,body[data-page="pricing"] .nav,body[data-page="trial"] .nav,body[data-page="about"] .nav,body[data-page="docs"] .nav,body[data-page="legal"] .nav,body[data-page="customers"] .nav,body[data-page="ai"] .nav{max-width:1488px;padding-inline:0;justify-content:flex-start}
body[data-section="product"] .brand,body[data-section="solutions"] .brand,body[data-page="pricing"] .brand,body[data-page="trial"] .brand,body[data-page="about"] .brand,body[data-page="docs"] .brand,body[data-page="legal"] .brand,body[data-page="customers"] .brand,body[data-page="ai"] .brand{font-size:1.56rem;gap:16px}
body[data-section="product"] .brand .logomark,body[data-section="solutions"] .brand .logomark,body[data-page="pricing"] .brand .logomark,body[data-page="trial"] .brand .logomark,body[data-page="about"] .brand .logomark,body[data-page="docs"] .brand .logomark,body[data-page="legal"] .brand .logomark,body[data-page="customers"] .brand .logomark,body[data-page="ai"] .brand .logomark{width:40px;height:40px}
body[data-section="product"] .brand .brand-logo,body[data-section="solutions"] .brand .brand-logo,body[data-page="pricing"] .brand .brand-logo,body[data-page="trial"] .brand .brand-logo,body[data-page="about"] .brand .brand-logo,body[data-page="docs"] .brand .brand-logo,body[data-page="legal"] .brand .brand-logo,body[data-page="customers"] .brand .brand-logo,body[data-page="ai"] .brand .brand-logo{height:46px}
body[data-section="product"] .nav-links,body[data-section="solutions"] .nav-links,body[data-page="pricing"] .nav-links,body[data-page="trial"] .nav-links,body[data-page="about"] .nav-links,body[data-page="docs"] .nav-links,body[data-page="legal"] .nav-links,body[data-page="customers"] .nav-links,body[data-page="ai"] .nav-links{gap:44px;margin-left:96px}
body[data-section="product"] .nav-link,body[data-section="solutions"] .nav-link,body[data-page="pricing"] .nav-link,body[data-page="trial"] .nav-link,body[data-page="about"] .nav-link,body[data-page="docs"] .nav-link,body[data-page="legal"] .nav-link,body[data-page="customers"] .nav-link,body[data-page="ai"] .nav-link{font-size:1.08rem;font-weight:600;color:var(--ink);padding:10px 12px}
body[data-section="product"] .nav-link .chev,body[data-section="solutions"] .nav-link .chev,body[data-page="pricing"] .nav-link .chev,body[data-page="trial"] .nav-link .chev,body[data-page="about"] .nav-link .chev,body[data-page="docs"] .nav-link .chev,body[data-page="legal"] .nav-link .chev,body[data-page="customers"] .nav-link .chev,body[data-page="ai"] .nav-link .chev{display:none}
body[data-section="product"] .nav-cta,body[data-section="solutions"] .nav-cta,body[data-page="pricing"] .nav-cta,body[data-page="trial"] .nav-cta,body[data-page="about"] .nav-cta,body[data-page="docs"] .nav-cta,body[data-page="legal"] .nav-cta,body[data-page="customers"] .nav-cta,body[data-page="ai"] .nav-cta{gap:16px;margin-left:auto}
body[data-section="product"] .nav-cta .btn.ghost,body[data-section="solutions"] .nav-cta .btn.ghost,body[data-page="pricing"] .nav-cta .btn.ghost,body[data-page="trial"] .nav-cta .btn.ghost,body[data-page="about"] .nav-cta .btn.ghost,body[data-page="docs"] .nav-cta .btn.ghost,body[data-page="legal"] .nav-cta .btn.ghost,body[data-page="customers"] .nav-cta .btn.ghost,body[data-page="ai"] .nav-cta .btn.ghost{display:none}
body[data-section="product"] .nav-cta .btn.primary,body[data-section="solutions"] .nav-cta .btn.primary,body[data-page="pricing"] .nav-cta .btn.primary,body[data-page="trial"] .nav-cta .btn.primary,body[data-page="about"] .nav-cta .btn.primary,body[data-page="docs"] .nav-cta .btn.primary,body[data-page="legal"] .nav-cta .btn.primary,body[data-page="customers"] .nav-cta .btn.primary,body[data-page="ai"] .nav-cta .btn.primary{height:52px;padding-inline:28px;font-size:1.06rem;border-radius:7px}
body[data-section="product"] .hamburger,body[data-section="solutions"] .hamburger,body[data-page="pricing"] .hamburger,body[data-page="trial"] .hamburger,body[data-page="about"] .hamburger,body[data-page="docs"] .hamburger,body[data-page="legal"] .hamburger,body[data-page="customers"] .hamburger,body[data-page="ai"] .hamburger{width:52px;height:52px;border-radius:8px}
body[data-section="product"] .hamburger svg,body[data-section="solutions"] .hamburger svg,body[data-page="pricing"] .hamburger svg,body[data-page="trial"] .hamburger svg,body[data-page="about"] .hamburger svg,body[data-page="docs"] .hamburger svg,body[data-page="legal"] .hamburger svg,body[data-page="customers"] .hamburger svg,body[data-page="ai"] .hamburger svg{width:25px;height:25px}

.product-hero{
  padding-block:42px 36px;
  background:linear-gradient(180deg,#fff 0%,#F8FAFD 100%);
  border-bottom:1px solid var(--line);
}
.product-hero .container-wide{max-width:1488px;padding-inline:0}
.product-hero-grid{display:grid;grid-template-columns:minmax(440px,560px) 1fr;gap:clamp(48px,5vw,76px);align-items:start}
.product-hero-copy .crumb{margin-bottom:32px}
.product-title{font-size:clamp(2.55rem,3.6vw,3.75rem);line-height:1.1;letter-spacing:0;max-width:12ch}
.product-lead{margin-top:24px;max-width:36ch;line-height:1.78;color:#334155}
.product-actions{margin-top:34px;gap:16px}
.product-actions .btn{min-width:174px;height:58px;border-radius:7px}
.product-actions .btn.ghost{border-color:var(--brand);color:var(--brand);background:#fff}
.product-hero-panel{
  position:relative;
  border:1px solid var(--line);
  border-radius:16px;
  background:rgba(255,255,255,.96);
  box-shadow:0 14px 42px rgba(31,79,163,.08),var(--sh-1);
  padding:34px;
  overflow:hidden;
}
.product-hero-panel::before{content:"";position:absolute;inset:0;background:
  linear-gradient(90deg,transparent 0,transparent 42px,rgba(31,79,163,.04) 43px),
  linear-gradient(transparent 0,transparent 42px,rgba(31,79,163,.04) 43px),
  linear-gradient(180deg,rgba(236,241,250,.8),rgba(255,255,255,.92));pointer-events:none}
.mini-ic{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:28px;
  height:28px;
  border-radius:7px;
  color:var(--brand);
  background:var(--brand-tint);
  border:1px solid var(--brand-tint-2);
  font-weight:700;
  font-size:.8rem;
  flex:none;
}
.mini-ic svg{width:16px;height:16px}
.product-flow,.optional-band{position:relative;z-index:1}
.product-flow{display:grid;grid-template-columns:repeat(5,1fr);gap:18px;align-items:stretch}
.flow-card{
  min-height:132px;
  border:1px solid #DCE5F4;
  border-radius:13px;
  background:rgba(255,255,255,.9);
  padding:18px 16px;
}
.flow-card strong,.optional-band a strong{display:block;margin-top:10px;font-size:1rem;color:var(--ink)}
.flow-card p,.optional-band a p{font-size:.78rem;color:#40516A;line-height:1.45;margin-top:5px}
.product-hero .ai-mini{color:var(--brand);background:#fff;border-color:var(--brand-tint-2);font-family:var(--font-mono);font-weight:700}
.product-hero-ai .flow-card{background:linear-gradient(180deg,#fff,#F8FBFF)}
.product-hero-ai .flow-card .ai-mini{background:var(--brand-tint);color:var(--brand)}
.btn.ai-primary{
  background:linear-gradient(135deg,var(--brand),#2563EB);
  border-color:var(--brand);
  box-shadow:0 10px 24px rgba(31,79,163,.18);
}
.evidence-strip{
  position:relative;
  z-index:1;
  margin-top:30px;
  border:1px solid #D2E6FF;
  border-radius:14px;
  background:linear-gradient(180deg,#F7FBFF,#EEF5FF);
  padding:18px;
  display:grid;
  gap:10px;
}
.evidence-row{
  display:grid;
  grid-template-columns:72px 1fr auto;
  align-items:center;
  gap:12px;
  border:1px solid rgba(31,79,163,.12);
  border-radius:11px;
  background:rgba(255,255,255,.82);
  padding:11px 13px;
  font-size:.82rem;
  color:var(--ink-2);
}
.evidence-row .t{font-family:var(--font-mono);color:#64748B}
.evidence-row strong{color:var(--ink)}
.solution-hero .product-flow{grid-template-columns:repeat(4,1fr)}
.solution-hero .solution-band{grid-template-columns:repeat(3,1fr)}
.solution-hero .flow-card{min-height:128px}
.solution-proof{
  position:relative;
  z-index:1;
  margin-top:30px;
  border:1px solid #D2E6FF;
  border-radius:14px;
  background:linear-gradient(180deg,#F7FBFF,#EEF5FF);
  padding:18px;
  display:grid;
  grid-template-columns:1.1fr .9fr;
  gap:14px;
}
.solution-proof .proof-card{
  border:1px solid rgba(31,79,163,.12);
  border-radius:12px;
  background:rgba(255,255,255,.8);
  padding:14px 16px;
}
.solution-proof .proof-k{font-size:.74rem;color:#64748B;margin-bottom:5px}
.solution-proof .proof-v{font-size:1.25rem;font-weight:700;color:var(--ink);font-family:var(--font-mono)}
.solution-proof .proof-note{font-size:.78rem;color:#40516A;line-height:1.45;margin-top:5px}
.proof-list{display:flex;flex-direction:column;gap:9px}
.proof-row{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:.82rem;color:var(--ink-2)}
.proof-row strong{color:var(--ink)}
.proof-row .cellpill{white-space:nowrap}
.proof-bars{display:flex;flex-direction:column;gap:10px}
.proof-bars .bar{height:7px;background:#DCE9FA}
.proof-cert{display:grid;grid-template-columns:52px 1fr;gap:13px;align-items:center}
.proof-cert .seal-mini{
  width:52px;
  height:52px;
  border-radius:50%;
  border:2px solid var(--brand);
  color:var(--brand);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:.68rem;
  font-weight:700;
}
.pricing-hero .product-flow{grid-template-columns:repeat(3,1fr)}
.pricing-hero .flow-card{min-height:132px}
.trial-hero .product-flow{grid-template-columns:repeat(2,1fr)}
.trial-hero .flow-card{min-height:146px}
.about-hero .product-flow{grid-template-columns:repeat(3,1fr)}
.about-hero .flow-card{min-height:136px}
.docs-hero .product-flow{grid-template-columns:repeat(4,1fr)}
.docs-hero .flow-card{min-height:136px}
.legal-hero .product-flow{grid-template-columns:repeat(3,1fr)}
.legal-hero .flow-card{min-height:132px}
.legal-hero .optional-band{grid-template-columns:repeat(3,1fr);margin-top:32px}
.conversion-note{
  position:relative;
  z-index:1;
  display:flex;
  align-items:center;
  gap:12px;
  margin-top:28px;
  padding:16px 18px;
  border:1px solid #D2E6FF;
  border-radius:13px;
  background:linear-gradient(180deg,#F2F8FF,#EAF3FE);
  color:#334155;
  font-size:.9rem;
  line-height:1.55;
}
.conversion-note .mini-ic{background:#fff}
.hero-demo-form{position:relative;z-index:1}
.hero-demo-form .field label{font-size:.82rem}
.hero-demo-form .textarea{resize:vertical}
.optional-band{
  margin-top:42px;
  border:1px dashed #93C5FD;
  border-radius:14px;
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:22px;
  padding:30px 28px 24px;
  background:rgba(255,255,255,.46);
}
.optional-label{
  position:absolute;
  top:-14px;
  left:50%;
  transform:translateX(-50%);
  background:var(--paper);
  color:var(--brand);
  font-size:.82rem;
  font-weight:700;
  padding:0 12px;
}
.optional-band a{
  display:flex;
  align-items:center;
  gap:12px;
  min-height:72px;
  border:1px solid #D2E6FF;
  border-radius:13px;
  background:linear-gradient(180deg,#F2F8FF,#EAF3FE);
  padding:14px 16px;
  transition:transform .16s ease,border-color .16s ease,box-shadow .16s ease;
}
.optional-band a:hover{transform:translateY(-2px);border-color:#AFCFFF;box-shadow:0 8px 18px rgba(31,79,163,.08)}
.product-hero-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;margin-top:36px}
.product-hero-cards a{
  display:grid;
  grid-template-columns:72px 1fr;
  gap:22px;
  align-items:center;
  min-height:126px;
  border:1px solid #DCE5F4;
  border-radius:13px;
  background:var(--paper);
  padding:26px 30px;
  box-shadow:var(--sh-card);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.product-hero-cards a:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:var(--line-2)}
.product-hero-cards strong{font-size:1.12rem}
.product-hero-cards p{margin-top:6px;color:var(--ink-2);font-size:.94rem;line-height:1.55}
.product-hero .home-card-ic{
  width:58px;
  height:58px;
  border-radius:14px;
  background:var(--brand-tint);
  color:var(--brand);
  display:flex;
  align-items:center;
  justify-content:center;
  border:1px solid var(--brand-tint-2);
  font-weight:700;
  font-size:1.2rem;
}
.product-hero .home-card-ic svg{width:27px;height:27px}
@media (max-width:980px){
  .product-hero-grid,.product-hero-cards{grid-template-columns:1fr}
  .product-flow,.optional-band{grid-template-columns:1fr}
  .product-title{max-width:14ch}
}
@media (max-width:560px){
  .product-flow{grid-template-columns:repeat(2,1fr);gap:12px}
  .docs-hero .product-flow,.legal-hero .product-flow,.legal-hero .optional-band{grid-template-columns:1fr}
  body[data-section="product"] .product-hero .optional-band,
  body[data-page="proctoring"] .product-hero .evidence-strip,
  body[data-section="solutions"] .product-hero .optional-band,
  body[data-section="solutions"] .product-hero .solution-proof,
  body[data-page="product"] .product-hero-cards{display:none}
  .flow-card{min-height:118px;padding:15px 13px}
  .optional-band{margin-top:28px;padding:28px 18px 20px}
  .optional-band a{min-height:68px}
  .product-hero-panel{padding:20px}
  .shot{max-width:100%}
  .app{grid-template-columns:1fr;min-height:0}
  .app-side{display:none}
  .app-main{padding:16px;overflow:hidden}
  .app-topbar{align-items:flex-start;gap:10px;flex-direction:column}
  .app-search{width:100%}
  .app-stats{grid-template-columns:repeat(2,1fr)}
  .app-table{table-layout:fixed;font-size:.7rem}
  .app-table th,.app-table td{padding:8px 6px;word-break:break-word}
  .card > div[style*="overflow-x:auto"]{max-width:100%}
  body[data-page="docs"] .container-wide,body[data-page="legal"] .container-wide{padding-inline:16px}
}
@media (max-width:1540px){
  body[data-section="product"] .nav,body[data-section="solutions"] .nav,body[data-page="pricing"] .nav,body[data-page="trial"] .nav,body[data-page="about"] .nav,body[data-page="docs"] .nav,body[data-page="legal"] .nav,body[data-page="customers"] .nav,body[data-page="ai"] .nav,.product-hero .container-wide{padding-inline:24px}
}
@media (max-width:900px){
  body[data-section="product"] .site-header{height:var(--nav-h)}
  body[data-section="solutions"] .site-header{height:var(--nav-h)}
  body[data-section="product"] .subnav,body[data-section="solutions"] .subnav{top:var(--nav-h)}
  body[data-page="pricing"] .site-header{height:var(--nav-h)}
  body[data-page="trial"] .site-header{height:var(--nav-h)}
  body[data-page="about"] .site-header{height:var(--nav-h)}
  body[data-page="docs"] .site-header{height:var(--nav-h)}
  body[data-page="legal"] .site-header{height:var(--nav-h)}
  body[data-page="customers"] .site-header,body[data-page="ai"] .site-header{height:var(--nav-h)}
  body[data-section="product"] .brand,body[data-section="solutions"] .brand,body[data-page="pricing"] .brand,body[data-page="trial"] .brand,body[data-page="about"] .brand,body[data-page="docs"] .brand,body[data-page="legal"] .brand,body[data-page="customers"] .brand,body[data-page="ai"] .brand{font-size:1.075rem;gap:10px}
  body[data-section="product"] .brand .logomark,body[data-section="solutions"] .brand .logomark,body[data-page="pricing"] .brand .logomark,body[data-page="trial"] .brand .logomark,body[data-page="about"] .brand .logomark,body[data-page="docs"] .brand .logomark,body[data-page="legal"] .brand .logomark,body[data-page="customers"] .brand .logomark,body[data-page="ai"] .brand .logomark{width:30px;height:30px}
  body[data-section="product"] .brand .brand-logo,body[data-section="solutions"] .brand .brand-logo,body[data-page="pricing"] .brand .brand-logo,body[data-page="trial"] .brand .brand-logo,body[data-page="about"] .brand .brand-logo,body[data-page="docs"] .brand .brand-logo,body[data-page="legal"] .brand .brand-logo,body[data-page="customers"] .brand .brand-logo,body[data-page="ai"] .brand .brand-logo{height:34px}
  body[data-section="product"] .nav,body[data-section="solutions"] .nav,body[data-page="pricing"] .nav,body[data-page="trial"] .nav,body[data-page="about"] .nav,body[data-page="docs"] .nav,body[data-page="legal"] .nav,body[data-page="customers"] .nav,body[data-page="ai"] .nav{justify-content:space-between}
  body[data-section="product"] .nav-links,body[data-section="solutions"] .nav-links,body[data-page="pricing"] .nav-links,body[data-page="trial"] .nav-links,body[data-page="about"] .nav-links,body[data-page="docs"] .nav-links,body[data-page="legal"] .nav-links,body[data-page="customers"] .nav-links,body[data-page="ai"] .nav-links{gap:2px;margin-left:0}
  body[data-section="product"] .nav-link,body[data-section="solutions"] .nav-link,body[data-page="pricing"] .nav-link,body[data-page="trial"] .nav-link,body[data-page="about"] .nav-link,body[data-page="docs"] .nav-link,body[data-page="legal"] .nav-link,body[data-page="customers"] .nav-link,body[data-page="ai"] .nav-link{font-size:.95rem;font-weight:500;padding:8px 13px}
  body[data-section="product"] .nav-link .chev,body[data-section="solutions"] .nav-link .chev,body[data-page="pricing"] .nav-link .chev,body[data-page="trial"] .nav-link .chev,body[data-page="about"] .nav-link .chev,body[data-page="docs"] .nav-link .chev,body[data-page="legal"] .nav-link .chev,body[data-page="customers"] .nav-link .chev,body[data-page="ai"] .nav-link .chev{display:inline}
  body[data-section="product"] .nav-cta .btn.ghost,body[data-section="solutions"] .nav-cta .btn.ghost,body[data-page="pricing"] .nav-cta .btn.ghost,body[data-page="trial"] .nav-cta .btn.ghost,body[data-page="about"] .nav-cta .btn.ghost,body[data-page="docs"] .nav-cta .btn.ghost,body[data-page="legal"] .nav-cta .btn.ghost,body[data-page="customers"] .nav-cta .btn.ghost,body[data-page="ai"] .nav-cta .btn.ghost{display:inline-flex}
  body[data-section="product"] .nav-cta .btn.primary,body[data-section="solutions"] .nav-cta .btn.primary,body[data-page="pricing"] .nav-cta .btn.primary,body[data-page="trial"] .nav-cta .btn.primary,body[data-page="about"] .nav-cta .btn.primary,body[data-page="docs"] .nav-cta .btn.primary,body[data-page="legal"] .nav-cta .btn.primary,body[data-page="customers"] .nav-cta .btn.primary,body[data-page="ai"] .nav-cta .btn.primary{height:auto;padding-inline:14px;font-size:.875rem;border-radius:var(--r-sm)}
  body[data-section="product"] .hamburger,body[data-section="solutions"] .hamburger,body[data-page="pricing"] .hamburger,body[data-page="trial"] .hamburger,body[data-page="about"] .hamburger,body[data-page="docs"] .hamburger,body[data-page="legal"] .hamburger,body[data-page="customers"] .hamburger,body[data-page="ai"] .hamburger{width:42px;height:42px;border-radius:9px}
}
@media (max-width:640px){
  body[data-section="product"] .nav-cta .btn.ghost,
  body[data-section="solutions"] .nav-cta .btn.ghost,
  body[data-page="pricing"] .nav-cta .btn.ghost,
  body[data-page="trial"] .nav-cta .btn.ghost,
  body[data-page="about"] .nav-cta .btn.ghost,
  body[data-page="docs"] .nav-cta .btn.ghost,
  body[data-page="legal"] .nav-cta .btn.ghost,
  body[data-page="customers"] .nav-cta .btn.ghost,body[data-page="ai"] .nav-cta .btn.ghost{display:none !important}
}

.loop{position:relative;display:grid;grid-template-columns:repeat(5,1fr);gap:14px;align-items:stretch}
.loop-node{position:relative;background:var(--paper);border:1px solid var(--line);border-radius:var(--r-md);
  padding:20px 16px;text-align:center;transition:border-color .3s,box-shadow .3s,transform .3s,background .3s;z-index:2}
.loop-node .ln-ic{width:48px;height:48px;border-radius:12px;margin:0 auto 12px;display:flex;align-items:center;justify-content:center;
  background:var(--surface-2);color:var(--ink-3);transition:all .3s}
.loop-node .ln-ic svg{width:24px;height:24px;stroke-width:1.7}
.loop-node h5{font-size:1rem;margin:0 0 4px;color:var(--ink)}
.loop-node p{font-size:.8rem;color:var(--ink-3);line-height:1.45}
.loop-node .ln-step{position:absolute;top:-9px;left:50%;transform:translateX(-50%);font-family:var(--font-mono);
  font-size:.66rem;font-weight:700;color:var(--ink-4);background:var(--paper);padding:0 6px}
.loop-node.lit{border-color:var(--brand);box-shadow:0 0 0 1px var(--brand),var(--sh-2);transform:translateY(-4px)}
.loop-node.lit .ln-ic{background:var(--brand);color:#fff}
.loop-node.lit .ln-step{color:var(--brand)}
.loop-arrow{position:absolute;top:50%;color:var(--line-2);z-index:1;transition:color .3s}
.loop-arrow svg{width:22px;height:22px}
.loop-arrow.lit{color:var(--brand)}
@media (max-width:860px){.loop{grid-template-columns:1fr 1fr}.loop-arrow{display:none}}
@media (max-width:480px){.loop{grid-template-columns:1fr}}

.governance-grid{grid-template-columns:repeat(4,1fr)}
@media (max-width:860px){.governance-grid{grid-template-columns:1fr 1fr}}
@media (max-width:480px){.governance-grid{grid-template-columns:1fr}}

/* ============ Logo wall ============ */
.logo-wall{display:grid;grid-template-columns:repeat(6,1fr);gap:1px;background:var(--line);
  border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden}
.logo-cell{background:var(--paper);aspect-ratio:16/8;display:flex;align-items:center;justify-content:center;gap:9px;
  filter:grayscale(1);opacity:.72;transition:filter .2s,opacity .2s}
.logo-cell:hover{filter:none;opacity:1}
.logo-cell .lg-mark{width:26px;height:26px;border-radius:6px;display:flex;align-items:center;justify-content:center;
  color:#fff;font-weight:700;font-size:.85rem;flex:none}
.logo-cell .lg-name{font-weight:600;font-size:.86rem;color:var(--ink-2);letter-spacing:-0.01em}
@media (max-width:860px){.logo-wall{grid-template-columns:repeat(3,1fr)}}
@media (max-width:460px){.logo-wall{grid-template-columns:repeat(2,1fr)}}

/* ============ Stats ============ */
.stat-row{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.stat .num{font-size:clamp(2.2rem,4vw,3rem);font-weight:600;letter-spacing:-0.03em;font-family:var(--font-mono);
  font-feature-settings:"tnum" 1;color:var(--ink);line-height:1}
.stat .num .suf{font-size:.5em;color:var(--brand);margin-left:2px}
.stat .lbl{margin-top:8px;color:var(--ink-3);font-size:.92rem}
.section.ink .stat .num{color:#fff}.section.ink .stat .num .suf{color:#7BA6E8}.section.ink .stat .lbl{color:#8C939D}
@media (max-width:640px){.stat-row{grid-template-columns:1fr 1fr;gap:28px 18px}}

/* ============ Testimonial ============ */
.quote-mark{display:none}
.quote-wrap{border-left:3px solid var(--brand);padding-left:28px}
.quote{font-size:clamp(1.1rem,1.8vw,1.4rem);line-height:1.6;font-weight:500;letter-spacing:-0.01em;color:var(--ink);text-wrap:pretty}
.quote-by{display:flex;align-items:center;gap:13px;margin-top:22px}
.quote-by .avatar{width:46px;height:46px;font-size:.95rem}
.quote-by .qb-name{font-weight:600;font-size:.95rem;color:var(--ink)}
.quote-by .qb-role{font-size:.85rem;color:var(--ink-3)}

/* ============ Checklist ============ */
.checklist{display:grid;gap:2px}
.check{display:flex;gap:13px;align-items:flex-start;padding:14px 16px;border-radius:10px;transition:background .14s}
.check:hover{background:var(--surface)}
.check .ck{width:24px;height:24px;border-radius:7px;background:var(--brand-tint);color:var(--brand);flex:none;
  display:flex;align-items:center;justify-content:center;margin-top:1px}
.check .ck svg{width:15px;height:15px;stroke-width:2.2}
.check h5{font-size:.98rem;margin:0 0 2px;color:var(--ink)}
.check p{font-size:.86rem;color:var(--ink-3);line-height:1.45}

/* ============ Comparison / pricing table ============ */
.cmp{width:100%;border-collapse:collapse;font-size:.92rem}
.cmp th,.cmp td{padding:14px 18px;text-align:left;border-bottom:1px solid var(--line);vertical-align:middle}
/* 表格位于卡片的横向滚动容器内,sticky 会以卡片为参照把表头顶离原位,故不吸顶 */
.cmp thead th{background:var(--paper);border-bottom:2px solid var(--line-2);
  font-weight:600;font-size:.95rem}
.cmp td.feat{color:var(--ink-2);font-weight:500}
.cmp .col-c{text-align:center;width:150px}
.cmp tbody tr:hover{background:var(--surface)}
.cmp .grp td{background:var(--surface);font-weight:600;font-size:.82rem;letter-spacing:.04em;text-transform:uppercase;color:var(--ink-3);padding-block:9px}
.cmp .rec-col{background:var(--brand-tint);}
.cmp thead .rec-col{background:var(--brand-tint);border-top:2px solid var(--brand);border-radius:8px 8px 0 0}
.tick{color:var(--ok);width:19px;height:19px;display:inline-block}
.dash{color:var(--ink-4)}
.cmp .small-note{font-size:.8rem;color:var(--ink-3)}

/* pricing cards */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;background:var(--paper)}
.price-card{padding:30px 26px;border-right:1px solid var(--line);display:flex;flex-direction:column}
.price-card:last-child{border-right:0}
.price-card.rec{background:var(--brand-tint);position:relative;border-right-color:var(--brand-tint-2)}
.price-card .pc-name{font-size:1.15rem;font-weight:600;color:var(--ink)}
.price-card .pc-rec{position:absolute;top:18px;right:18px}
.price-card .pc-desc{font-size:.88rem;color:var(--ink-3);margin-top:6px;min-height:40px}
.price-card .pc-price{margin:20px 0;font-family:var(--font-mono);font-weight:600}
.price-card .pc-price .amt{font-size:2.3rem;letter-spacing:-0.03em;color:var(--ink)}
.price-card .pc-price .per{font-size:.9rem;color:var(--ink-3);font-family:var(--font-sans)}
.price-card .pc-feats{list-style:none;margin:18px 0 0;padding:0;display:flex;flex-direction:column;gap:11px;font-size:.9rem;color:var(--ink-2);flex:1}
.price-card .pc-feats li{display:flex;gap:9px;align-items:flex-start}
.price-card .pc-feats svg{width:17px;height:17px;color:var(--brand);flex:none;margin-top:2px}
.price-card .btn{margin-top:22px;width:100%}
@media (max-width:840px){.price-grid{grid-template-columns:1fr}.price-card{border-right:0;border-bottom:1px solid var(--line)}}

/* add-on list */
.addon{display:flex;align-items:center;gap:16px;padding:18px 20px;border:1px solid var(--line);border-radius:var(--r-md);background:var(--paper)}
.addon .ichip{flex:none}
.addon .ad-body{flex:1}
.addon .ad-body h5{margin:0 0 2px;font-size:1rem}
.addon .ad-body p{font-size:.86rem;color:var(--ink-3)}
.addon .ad-price{font-family:var(--font-mono);font-weight:600;color:var(--ink);white-space:nowrap;font-size:.92rem}

/* ============ FAQ / accordion ============ */
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 4px;cursor:pointer;
  font-weight:600;font-size:1.02rem;color:var(--ink);list-style:none}
.faq-q::-webkit-details-marker{display:none}
.faq-q .pm{width:20px;height:20px;color:var(--ink-3);transition:transform .2s;flex:none}
details[open] .faq-q .pm{transform:rotate(45deg)}
.faq-a{padding:0 4px 20px;color:var(--ink-2);font-size:.95rem;line-height:1.6;max-width:72ch}

/* ============ Docs layout ============ */
.docs-shell{display:grid;grid-template-columns:248px 1fr;gap:48px;align-items:start}
.docs-side{position:sticky;top:calc(var(--nav-h) + 24px);font-size:.9rem}
.docs-side .ds-group{margin-bottom:22px}
.docs-side .ds-group h6{font-size:.76rem;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-4);margin:0 0 9px}
.docs-side a{display:block;padding:6px 10px;border-radius:7px;color:var(--ink-2);font-weight:400;transition:background .12s,color .12s}
.docs-side a:hover{background:var(--surface)}
.docs-side a.active{background:var(--brand-tint);color:var(--brand-strong);font-weight:600}
.docs-search{display:flex;align-items:center;gap:9px;border:1px solid var(--line-2);border-radius:9px;padding:9px 13px;margin-bottom:22px;color:var(--ink-4)}
.docs-search input{border:0;outline:0;flex:1;font-family:inherit;font-size:.92rem;background:transparent;color:var(--ink)}
.docs-search svg{width:16px;height:16px}
.doc-article h2{margin-top:8px}
.doc-article h3{margin-top:34px;margin-bottom:10px}
.doc-article p{color:var(--ink-2);margin:12px 0;max-width:70ch}
.doc-article ul{color:var(--ink-2);max-width:70ch;padding-left:20px}
.doc-article li{margin:7px 0}
.callout{display:flex;gap:13px;padding:16px 18px;border-radius:var(--r-md);background:var(--brand-tint);
  border:1px solid var(--brand-tint-2);margin:22px 0}
.callout.ai{background:var(--ai-tint);border-color:var(--ai-tint-2)}
.callout .ichip{flex:none;width:34px;height:34px;border-radius:8px}
.callout .ichip svg{width:18px;height:18px}
.callout p{margin:0;font-size:.9rem;color:var(--ink-2)}
.code{font-family:var(--font-mono);font-size:.82rem;background:var(--ink);color:#D6DBE2;border-radius:9px;padding:14px 16px;overflow-x:auto;line-height:1.6}
.code .cm{color:#7d8794}.code .tok{color:#7BA6E8}.code .str{color:#9ED4A8}
@media (max-width:860px){.docs-shell{grid-template-columns:1fr;gap:24px}.docs-side{position:static;display:none}}

/* ============ anchor subnav (product page) ============ */
.subnav{position:sticky;top:var(--nav-h);z-index:40;background:rgba(255,255,255,.9);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line)}
.subnav-inner{display:flex;gap:4px;overflow-x:auto;padding:0 var(--gutter);max-width:var(--maxw-wide);margin-inline:auto;scrollbar-width:none}
.subnav-inner::-webkit-scrollbar{display:none}
.subnav a{padding:14px 13px;font-size:.88rem;font-weight:500;color:var(--ink-3);white-space:nowrap;border-bottom:2px solid transparent;transition:color .14s,border-color .14s}
.subnav a:hover{color:var(--ink)}
.subnav a.active{color:var(--brand);border-bottom-color:var(--brand)}

/* ============ feature row (alternating) ============ */
.frow{display:grid;grid-template-columns:1fr 1.1fr;gap:clamp(32px,5vw,72px);align-items:center}
.frow.flip .frow-media{order:-1}
.feat-points{display:flex;flex-direction:column;gap:14px;margin-top:22px}
.feat-points .fp{display:flex;gap:12px;align-items:flex-start}
.feat-points .fp .ichip{width:34px;height:34px;border-radius:8px;flex:none}
.feat-points .fp .ichip svg{width:17px;height:17px}
.feat-points .fp h5{font-size:.95rem;margin:0 0 1px}
.feat-points .fp p{font-size:.85rem;color:var(--ink-3)}
@media (max-width:820px){.frow{grid-template-columns:1fr;gap:28px}.frow.flip .frow-media{order:0}}

/* ============ scenario / solution cards ============ */
.scards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.scard{padding:24px;border:1px solid var(--line);border-radius:var(--r-md);background:var(--paper);display:flex;flex-direction:column;gap:12px}
.scard .ichip{width:44px;height:44px}
.scard h4{font-size:1.1rem}
.scard .pain{font-size:.86rem;color:var(--ink-3)}
.scard .sol{font-size:.92rem;color:var(--ink-2)}
.scard .link-arrow{margin-top:auto}
@media (max-width:820px){.scards{grid-template-columns:1fr}}

/* ============ selection checklist ============ */
.steps{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.step{display:flex;gap:16px;padding:22px;border:1px solid var(--line);border-radius:var(--r-md);background:var(--paper)}
.step-n{font-family:var(--font-mono);font-size:.78rem;font-weight:600;color:var(--brand);padding-top:3px;flex:none}
.step h4{margin-bottom:6px}.step p{color:var(--ink-3);font-size:.92rem}
@media (max-width:760px){.steps{grid-template-columns:1fr}}

/* page hero band */
.phero{padding-top:clamp(48px,7vw,84px);padding-bottom:clamp(40px,5vw,64px)}
.phero.tint{background:var(--surface);border-bottom:1px solid var(--line)}

/* breadcrumb */
.crumb{display:flex;align-items:center;gap:8px;font-size:.84rem;color:var(--ink-4);margin-bottom:16px}
.crumb a:hover{color:var(--ink-2)}
.crumb svg{width:13px;height:13px}

/* legal toc */
.legal-shell{display:grid;grid-template-columns:230px 1fr;gap:48px;align-items:start}
.legal-toc{position:sticky;top:calc(var(--nav-h) + 24px);font-size:.88rem;display:flex;flex-direction:column;gap:4px}
.legal-toc a{color:var(--ink-3);padding:5px 0;border-left:2px solid var(--line);padding-left:13px;transition:color .14s,border-color .14s}
.legal-toc a:hover,.legal-toc a.active{color:var(--brand);border-left-color:var(--brand)}
.legal-body h3{margin-top:36px;margin-bottom:10px;font-size:1.2rem}
.legal-body p,.legal-body li{color:var(--ink-2);font-size:.95rem;line-height:1.7;max-width:74ch}
.legal-body ul{padding-left:20px}.legal-body li{margin:6px 0}
@media (max-width:860px){.legal-shell{grid-template-columns:1fr}.legal-toc{display:none}}

/* trial account block */
.acct{font-family:var(--font-mono);font-size:.84rem;background:var(--ink);color:#D6DBE2;border-radius:10px;padding:16px 18px}
.acct .ar{display:flex;justify-content:space-between;gap:16px;padding:6px 0;border-bottom:1px solid rgba(255,255,255,.08)}
.acct .ar:last-child{border-bottom:0}
.acct .ak{color:#8C939D}
.copy-btn{display:inline-flex;align-items:center;gap:5px;font-size:.72rem;color:#7BA6E8;cursor:pointer;background:none;border:0;font-family:var(--font-mono)}
.copy-btn svg{width:12px;height:12px}