/* ===== 原 welcome.html 第 9-27 行的内联 <style>（逐字节保留）===== */
*{box-sizing:border-box}body{margin:0;font:15px/1.6 Geist,"PingFang SC","Microsoft YaHei",sans-serif}a{text-decoration:none}button,input,select,textarea{font:inherit}.wrap{width:min(1120px,calc(100% - 40px));margin-inline:auto}
.site-header{position:sticky;top:0;z-index:30;background:color-mix(in oklch,var(--v-background) 88%,transparent);backdrop-filter:blur(16px);border-bottom:1px solid var(--v-border)}.site-nav{min-height:64px;display:flex;align-items:center;justify-content:space-between;gap:20px}.brand{display:inline-flex;align-items:center;gap:9px;color:var(--v-foreground);font-size:19px;font-weight:700}.brand img{width:28px;height:28px}.navlinks{display:flex;align-items:center;gap:24px;font-size:13px}.navlinks>a:not(.button){color:var(--v-muted-foreground)}.navlinks>a:hover{color:var(--v-foreground)}.nav-actions{display:flex;align-items:center;gap:9px}.menu-button{display:none;width:42px;height:42px;align-items:center;justify-content:center;border:1px solid var(--v-border);background:var(--v-card);border-radius:7px;color:var(--v-foreground)}
.button{min-height:44px;display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:0 19px;border:1px solid var(--v-border);border-radius:22px;color:var(--v-foreground);background:var(--v-card);font-size:13px;font-weight:600;cursor:pointer;transition:opacity .18s,background .18s}.button:hover{opacity:.82}.button.primary{background:var(--v-foreground);border-color:var(--v-foreground);color:var(--v-card)}.button:disabled{opacity:.55}
.hero{padding:54px 0 58px;text-align:center}.hero-logo{display:inline-flex;align-items:center;gap:12px;border:0;background:none;color:var(--v-foreground);font-size:42px;font-weight:650;cursor:pointer}.hero-logo img{width:62px;height:62px;animation:logo-enter .9s cubic-bezier(.22,1,.36,1) both}.hero-logo span{animation:logo-enter .9s .22s cubic-bezier(.22,1,.36,1) both}.hero h1{max-width:780px;margin:28px auto 15px;font-size:clamp(30px,4vw,46px);line-height:1.24;font-weight:650;color:var(--v-foreground)}.hero h1 em{font-style:normal;color:var(--v-brand)}.hero-copy{max-width:650px;margin:0 auto;color:var(--v-muted-foreground);font-size:16px}.hero-actions{display:flex;justify-content:center;gap:10px;margin-top:28px;flex-wrap:wrap}.hero-note{margin:12px 0 0;color:var(--v-muted-foreground);font-size:12px}
.product-preview{display:grid;grid-template-columns:195px minmax(0,1fr);max-width:960px;margin:38px auto 0;text-align:left;border:1px solid var(--v-border);border-radius:8px;background:var(--v-card);box-shadow:0 20px 52px -32px rgba(20,35,55,.28);overflow:hidden}.preview-side strong{display:block;font-size:13px;margin-bottom:22px}.preview-side span{display:block;padding:8px 10px;color:var(--v-muted-foreground);font-size:12px}.preview-side .selected{background:var(--v-card);color:var(--v-brand);border-radius:6px}.preview-top strong{color:var(--v-foreground)}.preview-main h2{font-size:19px;margin:22px 0 5px}.preview-main>p{margin:0;color:var(--v-muted-foreground);font-size:13px}.preview-evidence div{padding-top:12px;border-top:1px solid var(--v-border)}.preview-evidence b{display:block;font-size:13px}.preview-evidence span{display:block;margin-top:5px;color:var(--v-muted-foreground);font-size:12px}
.band{border-top:1px solid var(--v-border)}.section{padding:78px 0}.section-header{max-width:650px;margin-bottom:32px}.section h2{margin:0;color:var(--v-foreground);font-size:clamp(25px,3vw,36px);line-height:1.3;font-weight:650}.section-header p{margin:12px 0 0;color:var(--v-muted-foreground)}.modules{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}.module{min-width:0;border-top:1px solid var(--v-border);padding-top:19px}.module-visual.lines{flex-direction:column;gap:12px}.module-visual.lines span{height:8px;border-radius:4px;background:var(--v-brand)}.module-visual.lines span:nth-child(1){width:55%}.module-visual.lines span:nth-child(2){width:73%;opacity:.65}.module-visual.lines span:nth-child(3){width:42%;opacity:.35}.module-visual.checks{gap:12px}.module-visual.checks span{display:grid;place-items:center;width:32px;height:32px;border:1px solid var(--v-border);border-radius:50%;color:var(--v-brand);font-size:15px}.module-visual.checks span:last-child{color:var(--v-warning)}.module-visual.bars{align-items:end;gap:12px;padding:20px}.module-visual.bars span{width:16px;background:var(--v-brand);border-radius:3px 3px 0 0}.module-visual.bars span:nth-child(1){height:45%}.module-visual.bars span:nth-child(2){height:72%;opacity:.65}.module-visual.bars span:nth-child(3){height:55%;opacity:.42}.module-visual.bars span:nth-child(4){height:90%;opacity:.75}.module h3{margin:0;font-size:17px}.module p{margin:9px 0 0;color:var(--v-muted-foreground);font-size:13px}
.workflow{display:grid;grid-template-columns:.85fr 1.15fr;gap:60px}.workflow ol{margin:0;padding:0;list-style:none}.workflow li{display:grid;grid-template-columns:32px 1fr;gap:16px;padding:19px 0;border-top:1px solid var(--v-border)}.workflow li span{color:var(--v-brand);font-size:13px}.workflow li strong{font-size:18px}.workflow li p{margin:5px 0 0;color:var(--v-muted-foreground);font-size:13px}.limits{margin-top:45px;padding:16px 0;border-top:1px solid var(--v-border);font-size:12px;color:var(--v-muted-foreground)}
.coverage{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.coverage article{padding-top:16px;border-top:1px solid var(--v-border)}.coverage h3{margin:0;font-size:16px}.coverage p,.coverage li{color:var(--v-muted-foreground);font-size:13px}.coverage ul{padding-left:18px}.coverage a{font-size:12px;color:var(--v-brand)}
.plans{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.plan{display:flex;flex-direction:column;min-height:360px;padding:26px;border:1px solid var(--v-border);border-radius:8px;background:var(--v-card)}.plan.featured{background:var(--v-foreground);border-color:var(--v-foreground);color:var(--v-card)}.plan h3{font-size:15px;margin:0}.plan .price{font-size:31px;font-weight:650;margin:15px 0 0}.plan small,.plan p{color:var(--v-muted-foreground);font-size:12px}.plan.featured small,.plan.featured p{color:color-mix(in oklch,var(--v-card) 70%,transparent)}.plan ul{flex:1;margin:20px 0;padding:0;list-style:none;font-size:13px}.plan li{padding:5px 0}.plan li:before{content:"✓";margin-right:10px;color:var(--v-brand)}.plan.featured li:before{color:var(--v-card)}.plan .button{align-self:start}.plan.featured .button{background:var(--v-card);color:var(--v-foreground)}
.beta-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:48px}.beta-layout .section-header{margin:0}.beta-form{display:grid;grid-template-columns:1fr 1fr;gap:15px}.beta-form label{display:grid;gap:6px;color:var(--v-foreground);font-size:12px}.beta-form .full{grid-column:1/-1}.beta-form input,.beta-form select,.beta-form textarea{width:100%;min-height:42px;padding:10px 11px;border:1px solid var(--v-border);border-radius:6px;background:var(--v-card);color:var(--v-foreground)}.beta-form textarea{min-height:96px;resize:vertical}.formstatus{grid-column:1/-1;min-height:20px;color:var(--v-brand);font-size:12px}.formnote,.boundary{color:var(--v-muted-foreground);font-size:12px}.boundary{padding:22px 0;border-top:1px solid var(--v-border)}.foot{display:flex;justify-content:space-between;gap:15px;padding:26px 0 36px;border-top:1px solid var(--v-border);color:var(--v-muted-foreground);font-size:12px}
.hero-logo{display:flex;flex-direction:column;gap:23px;min-height:195px}@media(max-width:800px){.navlinks{display:none}.menu-button{display:flex}.navlinks.open{display:flex;position:absolute;top:64px;left:0;right:0;padding:16px 20px 22px;background:var(--v-card);border-bottom:1px solid var(--v-border);flex-direction:column;align-items:stretch}.navlinks.open a{padding:8px 0}.workflow,.beta-layout{grid-template-columns:1fr;gap:22px}.modules,.coverage,.plans{grid-template-columns:1fr 1fr}.section{padding:56px 0}}@media(max-width:620px){.wrap{width:calc(100% - 32px)}.site-nav{min-height:60px}.hero{padding:32px 0 42px}.hero-logo{font-size:32px}.hero-logo img{width:46px;height:46px}.hero h1{margin-top:20px}.hero-copy{font-size:14px}.hero-actions{flex-direction:column}.hero-actions .button{width:100%}.product-preview{grid-template-columns:1fr;margin-top:28px}.modules,.coverage,.plans{grid-template-columns:1fr}.beta-form{grid-template-columns:1fr}.beta-form .full{grid-column:auto}.foot{display:block}.foot span{display:block;margin-top:8px}}
.example-flow{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;margin:0;padding:0;list-style:none}.example-flow li{border-top:1px solid var(--v-border);padding-top:14px}.example-flow span{display:block;color:var(--v-brand);font-size:12px;margin-bottom:12px}.example-flow strong{font-size:15px}.example-flow p{margin:8px 0 0;color:var(--v-muted-foreground);font-size:12px}@media(max-width:800px){.example-flow{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:620px){.example-flow{grid-template-columns:1fr}}
.modules{gap:16px}.module{display:flex;flex-direction:column;gap:22px;min-height:318px;padding:28px;border:1px solid var(--v-border);border-radius:22px;background:var(--v-card);color:var(--v-foreground);transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease}.module:hover{transform:translateY(-2px);border-color:color-mix(in oklch,var(--v-foreground) 18%,var(--v-border));box-shadow:0 18px 48px -30px oklch(.35 .08 255 / .35)}.module-wide{grid-column:span 2;display:grid;grid-template-columns:.9fr 1.1fr;align-items:center;gap:32px}.module small{display:flex;justify-content:space-between;gap:12px;color:var(--v-brand);font-size:12px;font-weight:500}.module h3{margin:9px 0 0;font-size:20px;line-height:1.35;font-weight:600}.module p{font-size:13px;line-height:1.6}.module-mini{display:grid;align-content:center;gap:0;min-height:146px;margin-top:auto;padding:13px 15px;border:1px solid var(--v-border);border-radius:16px;background:var(--v-muted);box-shadow:inset 0 1px 0 color-mix(in oklch,var(--v-card) 70%,transparent)}.module-wide .module-mini{margin-top:0}.module-mini>div{display:flex;align-items:center;justify-content:space-between;gap:14px;min-width:0;padding:7px 0;border-bottom:1px solid var(--v-border);font-size:11px}.module-mini>div:last-child{border-bottom:0}.module-mini b{font-size:12px;font-weight:600}.module-mini em{font-style:normal;color:var(--v-muted-foreground);text-align:right}.module-mini span{color:var(--v-muted-foreground)}.module-mini strong{font-size:11px;font-weight:500;color:var(--v-brand)}
.evidence-steps{display:flex;align-items:center;justify-content:space-between;position:relative;padding:13px 6px 9px}.evidence-steps::before{content:"";position:absolute;left:16px;right:16px;top:25px;border-top:1px solid var(--v-border)}.evidence-steps i{position:relative;display:grid;place-items:center;width:26px;height:26px;border:1px solid var(--v-border);border-radius:50%;background:var(--v-muted);color:var(--v-muted-foreground);font-style:normal;font-size:12px}.evidence-steps i.done{background:var(--v-brand);border-color:var(--v-brand);color:var(--v-card)}.mini-note{margin-top:5px;padding:9px 10px;border-radius:10px;background:color-mix(in oklch,var(--v-card) 55%,var(--v-muted));color:var(--v-muted-foreground);font-size:11px;line-height:1.45}.allocation{display:flex!important;height:10px;margin:7px 0;padding:0!important;border:0!important;border-radius:999px;overflow:hidden;background:var(--v-border)}.allocation span:first-child{width:58%;background:var(--v-brand)}.allocation span:last-child{width:42%;background:color-mix(in oklch,var(--v-brand) 52%,var(--v-muted))}.chain-row{display:flex!important;align-items:center!important;gap:10px;justify-content:stretch!important}.chain-row span{width:35px}.chain-row strong{flex:1;padding:7px 9px;border:1px solid var(--v-border);border-radius:8px;background:var(--v-card);font-weight:500}.chain-row.active strong{border-color:color-mix(in oklch,var(--v-brand) 45%,var(--v-border));background:color-mix(in oklch,var(--v-brand) 8%,var(--v-card))}.macro-mini{gap:7px}.macro-mini>div{border-bottom:0}.macro-mini>div strong{font-size:22px;font-weight:500;color:var(--v-foreground)}.macro-mini svg{display:block;width:100%;height:48px;overflow:visible}.macro-mini polyline{fill:none;stroke:#159a68;stroke-width:2;vector-effect:non-scaling-stroke}.checklist-mini>div:not(:first-child){justify-content:flex-start!important}.check{display:grid;width:16px;height:16px;place-items:center;border-radius:4px;background:var(--v-brand);color:var(--v-card)!important;font-size:10px}.check.empty{border:1px solid var(--v-border);background:transparent}.source-row{gap:10px}.source-row i{width:42px;height:10px;border-radius:999px;background:linear-gradient(90deg,var(--v-brand) 0 76%,var(--v-border) 76%)}.source-row:nth-of-type(3) i{background:linear-gradient(90deg,var(--v-brand) 0 58%,var(--v-border) 58%)}.source-row:nth-of-type(4) i{background:linear-gradient(90deg,var(--v-brand) 0 88%,var(--v-border) 88%)}.quota-mini .quota-bar{display:block!important;height:5px;margin:-2px 0 4px;padding:0!important;border:0!important;border-radius:999px;background:var(--v-border)}.quota-bar i{display:block;width:34%;height:100%;border-radius:inherit;background:var(--v-brand)}.quota-bar:nth-of-type(5) i{width:38%}
@media(max-width:1000px){.modules{grid-template-columns:repeat(2,minmax(0,1fr))}.module-wide{grid-column:span 2}}@media(max-width:640px){.modules{grid-template-columns:1fr}.module,.module-wide{grid-column:auto;display:flex;min-height:0;gap:20px}.module h3{font-size:18px}.module-mini{width:100%}}
.hero-logo{align-items:center;width:max-content;margin-inline:auto}

/* ===== 原 welcome.html 第 28-34 行的内联 <style>（逐字节保留）===== */
.hero-logo{align-items:center;width:max-content;margin-inline:auto}
.hero-logo>.vestra-logo-stage,.hero-logo>.vestra-wordmark,.hero-logo>.vestra-visually-hidden{animation:none}
.hero-logo>.vestra-wordmark>.vestra-letter{animation:vestra-rise .9s cubic-bezier(.22,1,.36,1) forwards;animation-delay:calc(700ms + var(--i)*70ms)}
.vestra-logo-stage{width:144px;height:144px}.vestra-logo-tile{padding:28px}.vestra-wordmark{font-size:72px}
@media(max-width:767px){.vestra-logo-stage{width:112px;height:112px}.vestra-logo-tile{padding:22px}.vestra-wordmark{font-size:56px}}

/* ===== 原 welcome.html 第 35-52 行的内联 <style>（逐字节保留）===== */
/* Reference UI uses restrained pastel surfaces to distinguish research modes without turning the page into a dashboard. */
.modules>.module:nth-child(1) .module-mini{background:linear-gradient(135deg,oklch(.975 .018 315),oklch(.965 .018 240))}
.modules>.module:nth-child(2) .module-mini{background:linear-gradient(135deg,oklch(.965 .02 235),oklch(.975 .012 265))}
.modules>.module:nth-child(3) .module-mini{background:linear-gradient(135deg,oklch(.978 .018 82),oklch(.965 .018 255))}
.modules>.module:nth-child(4) .module-mini{background:linear-gradient(135deg,oklch(.97 .02 165),oklch(.965 .012 235))}
.modules>.module:nth-child(5) .module-mini{background:linear-gradient(135deg,oklch(.98 .018 92),oklch(.97 .012 255))}
.modules>.module:nth-child(6) .module-mini{background:linear-gradient(135deg,oklch(.965 .018 205),oklch(.975 .012 270))}
.modules>.module:nth-child(7) .module-mini{background:linear-gradient(135deg,oklch(.973 .02 295),oklch(.965 .015 245))}
.coverage article,.example-flow li{transition:transform .18s ease,border-color .18s ease,background .18s ease}
.coverage article{padding:18px;border:1px solid var(--v-border);border-radius:16px;background:color-mix(in oklch,var(--v-card) 82%,var(--v-accent));}
.coverage article:hover,.example-flow li:hover{transform:translateY(-2px);border-color:color-mix(in oklch,var(--v-brand) 30%,var(--v-border))}
.example-flow{gap:14px}
.example-flow li{padding:18px;border:1px solid var(--v-border);border-radius:16px;background:var(--v-card)}
.example-flow span{display:grid;place-items:center;width:28px;height:28px;margin-bottom:15px;border-radius:50%;background:color-mix(in oklch,var(--v-brand) 12%,var(--v-card));color:var(--v-brand);font-weight:600}
.plans .plan{border-radius:20px}
html.dark .modules>.module .module-mini{background:var(--v-muted)}

/* ===== 原 welcome.html 第 53-66 行的内联 <style>（逐字节保留）===== */
/* Hero preview follows the original Vestra terminal reference: one calm chart surface,
   a compact evidence rail, and enough whitespace to read it as a product preview. */
.product-preview{display:none}
.hero-terminal-preview{max-width:1020px;margin:38px auto 0;padding:8px;border:1px solid var(--v-border);border-radius:28px;background:var(--v-card);box-shadow:0 24px 70px -42px rgba(20,35,55,.42);text-align:left}
.hero-terminal-window{overflow:hidden;border:1px solid var(--v-border);border-radius:20px;background:var(--v-card)}
.hero-terminal-bar{height:42px;display:flex;align-items:center;justify-content:center;border-bottom:1px solid var(--v-border);position:relative;color:var(--v-muted-foreground);font-size:11px}
.hero-terminal-dots{position:absolute;left:16px;display:flex;gap:7px}.hero-terminal-dots i{width:10px;height:10px;border-radius:50%;background:var(--v-border)}
.hero-terminal-url{padding:4px 14px;border-radius:9px;background:var(--v-muted);font-family:ui-monospace,SFMono-Regular,monospace}
.hero-terminal-body{display:grid;grid-template-columns:minmax(0,1fr) 300px;min-height:420px}
.hero-chart-pane{padding:28px 24px 18px}.hero-chart-head{display:flex;justify-content:space-between;gap:14px}.hero-chart-head small{display:block;color:var(--v-muted-foreground);font-size:12px}.hero-chart-head strong{display:block;margin-top:3px;font-size:18px}.hero-chart-quote{text-align:right;font-size:30px;line-height:1.05}.hero-chart-quote em{display:block;margin-top:5px;color:#e33d45;font-style:normal;font-size:12px}.hero-chart-svg{display:block;width:100%;height:235px;margin-top:16px}.hero-chart-svg .grid{stroke:var(--v-border);stroke-width:1}.hero-chart-svg .area{fill:url(#vestraChartFill)}.hero-chart-svg .line{fill:none;stroke:#e33d45;stroke-width:2;vector-effect:non-scaling-stroke}.hero-mini-rows{display:grid;gap:0;margin-top:2px}.hero-mini-row{display:grid;grid-template-columns:1fr 90px 58px;align-items:center;gap:10px;padding:9px 0;border-top:1px solid var(--v-border);font-size:12px}.hero-mini-row svg{width:90px;height:20px}.hero-mini-row polyline{fill:none;stroke:#159a68;stroke-width:1.6;vector-effect:non-scaling-stroke}.hero-mini-row:nth-child(n+2) polyline{stroke:#e33d45}.hero-mini-row b{text-align:right;font-weight:500;color:#159a68}.hero-mini-row:nth-child(n+2) b{color:#e33d45}
.hero-evidence-rail{padding:20px;border-left:1px solid var(--v-border);background:color-mix(in oklch,var(--v-muted) 46%,var(--v-card))}.hero-evidence-rail small{color:var(--v-muted-foreground);font-size:11px}.hero-evidence-rail h3{margin:6px 0 15px;font-size:14px;line-height:1.5}.hero-evidence-list{display:grid;gap:0;padding:0;margin:0;list-style:none;border:1px solid var(--v-border);border-radius:14px;overflow:hidden}.hero-evidence-list li{display:flex;justify-content:space-between;gap:12px;padding:10px 12px;border-bottom:1px solid var(--v-border);font-size:12px}.hero-evidence-list li:last-child{border-bottom:0}.hero-evidence-list b{padding:2px 7px;border-radius:999px;background:color-mix(in oklch,var(--v-brand) 12%,var(--v-card));color:var(--v-brand);font-size:10px;font-weight:500}.hero-evidence-note{margin:18px 0 0;color:var(--v-muted-foreground);font-size:12px;line-height:1.6}
@media(max-width:760px){.hero-terminal-body{grid-template-columns:1fr}.hero-evidence-rail{border-top:1px solid var(--v-border);border-left:0}.hero-chart-quote{font-size:24px}.hero-terminal-preview{margin-top:28px;padding:5px}.hero-chart-pane{padding:20px 16px 14px}}