/* SEO's public family entry. The authenticated Echo workspace keeps its own theme. */
:root{color-scheme:dark;--seo-bg:#110f0b;--seo-surface:#1c1811;--seo-text:#fff9ed;--seo-muted:#c9c1b2;--seo-accent:#f4c96b;--seo-line:#5d5140;--seo-font:Inter,"Noto Sans SC",-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif}
*,*::before,*::after{box-sizing:border-box}
html{scroll-padding-top:110px}
body{margin:0;background:var(--seo-bg);color:var(--seo-text);font-family:var(--seo-font);font-size:16px;line-height:1.7}
a{color:inherit}
button{font:inherit}
a,button{-webkit-tap-highlight-color:transparent}
:focus-visible{outline:3px solid var(--seo-accent);outline-offset:5px}
h1,h2,h3,p{margin:0}
h1,h2,h3{text-wrap:balance}
.content-width{width:min(100% - 48px,1040px);margin-inline:auto}
.site-header{position:sticky;top:0;z-index:10;background:var(--seo-bg);border-bottom:1px solid var(--seo-line)}
.site-nav{max-width:1440px;margin:auto;padding:16px 32px;display:flex;justify-content:space-between;align-items:center;gap:24px}
.brand{display:inline-flex;align-items:center;gap:6px;min-height:44px;font-size:21px;font-weight:800;letter-spacing:-.04em;text-decoration:none;white-space:nowrap}
.brand span{color:var(--seo-accent)}
.nav-actions{display:flex;align-items:center;gap:10px}
.button{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:11px 24px;border-radius:10px;border:1px solid var(--seo-line);font-weight:650;font-size:15px;line-height:1.4;text-decoration:none;text-align:center;cursor:pointer;transition:background-color .18s,border-color .18s}
.button-quiet{background:transparent;color:var(--seo-text);border-color:#77664c}
.button-quiet:hover{background:var(--seo-surface);border-color:var(--seo-accent)}
.button-primary{background:var(--seo-accent);border-color:var(--seo-accent);color:var(--seo-bg)}
.button-primary:hover{background:var(--seo-text);border-color:var(--seo-text)}
.nav-actions .button{min-height:44px;padding:10px 18px;font-size:13px;white-space:nowrap}
.skip-link{position:fixed;top:12px;left:16px;z-index:20;padding:12px;background:var(--seo-accent);color:var(--seo-bg);transform:translateY(-200%)}
.skip-link:focus{transform:none}
.hero{min-height:660px;min-height:min(780px,calc(100svh - 77px));max-width:960px;margin:auto;padding:88px 24px 52px;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center}
.eyebrow{color:var(--seo-accent);font-size:13px;font-weight:650;line-height:1.5}
.hero h1{font-size:clamp(40px,6.5vw,76px);line-height:1.15;letter-spacing:-.045em;margin:24px 0}
.accent{color:var(--seo-accent)}
.hero-lead{max-width:660px;color:var(--seo-muted);font-size:clamp(16px,1.8vw,19px);line-height:1.8}
.hero-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin:32px 0 16px}
.hero-note{font-size:13px;color:var(--seo-muted)}
.explore-link{display:inline-flex;align-items:center;min-height:44px;margin-top:36px;font-size:13px;color:var(--seo-muted);text-underline-offset:5px}
.section-heading{text-align:center;margin-bottom:40px}
.section-heading h2,.agent-section h2{font-size:clamp(28px,3.4vw,38px);line-height:1.35;letter-spacing:-.025em;margin-top:12px}
.capabilities{padding-top:48px;padding-bottom:64px}
.capability{display:flex;align-items:center;gap:48px;margin-top:24px;padding:40px;border:1px solid var(--seo-line);border-radius:20px;background:var(--seo-surface)}
.capability-reverse{flex-direction:row-reverse}
.capability-copy{flex:1;min-width:0}
.step-label{font-size:12px;font-weight:650;color:var(--seo-accent)}
.capability h3{font-size:27px;line-height:1.4;letter-spacing:-.02em;margin:12px 0 16px}
.capability p:not(.step-label){color:var(--seo-muted)}
.capability .capability-note{font-size:13px;margin-top:16px}
.text-link{display:inline-flex;align-items:center;min-height:44px;margin-top:16px;color:var(--seo-accent);font-size:14px;font-weight:650;text-underline-offset:5px}
.capability-figure{width:220px;flex-shrink:0;color:var(--seo-muted)}
.capability-figure svg{display:block;width:100%;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.capability-figure .svg-accent{stroke:var(--seo-accent)}
.workflow{padding:32px 0 80px}
.workflow-steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:32px;padding:0;list-style:none}
.workflow-steps li{border-top:1px solid var(--seo-line);padding-top:20px}
.workflow-number{font-family:ui-monospace,monospace;color:var(--seo-accent);font-size:13px}
.workflow-steps h3{margin:12px 0 8px;font-size:20px}
.workflow-steps p{color:var(--seo-muted);font-size:15px}
.agent-section{text-align:center;padding:48px 32px 56px;border:1px solid var(--seo-line);border-radius:20px;background:var(--seo-surface)}
.agent-section>p:not(.eyebrow){max-width:660px;margin:20px auto 0;color:var(--seo-muted)}
.agent-links{display:flex;justify-content:center;gap:12px;flex-wrap:wrap;margin-top:28px}
.site-footer{display:flex;justify-content:space-between;align-items:center;gap:24px;padding-block:40px;color:var(--seo-muted);font-size:13px}
.site-footer p{display:flex;gap:16px;flex-wrap:wrap}
.site-footer strong{color:var(--seo-text)}
.site-footer nav{display:flex;gap:24px;flex-wrap:wrap}
.site-footer a{display:inline-flex;align-items:center;min-height:44px;text-underline-offset:5px}
@media(max-width:768px){
  .site-nav{padding:14px 24px;gap:16px}
  .hero{min-height:620px;padding-top:64px}
  .capability,.capability-reverse{gap:24px;padding:28px}
  .capability-figure{width:150px}
  .capability h3{font-size:24px}
  .workflow-steps{gap:24px}
  .site-footer{align-items:flex-start;flex-direction:column;gap:16px}
}
@media(max-width:560px){
  html{scroll-padding-top:145px}
  .content-width{width:calc(100% - 32px)}
  .site-nav{flex-wrap:wrap;padding:10px 16px;gap:4px 12px}
  .brand{font-size:19px}
  .nav-actions{margin-left:auto;gap:6px}
  .nav-actions .button{padding:10px 12px;font-size:12px}
  .hero{min-height:auto;padding:64px 20px 44px}
  .hero h1{font-size:clamp(36px,9vw,48px);margin-block:20px}
  .hero-actions{width:100%;flex-direction:column;margin-top:28px}
  .hero-actions .button{width:100%}
  .hero-note{max-width:260px}
  .capabilities{padding-top:32px;padding-bottom:48px}
  .section-heading{margin-bottom:28px}
  .capability,.capability-reverse{flex-direction:column;align-items:flex-start;padding:24px;gap:20px}
  .capability-figure{width:130px;align-self:center;order:-1}
  .capability h3{font-size:24px}
  .workflow{padding-bottom:48px}
  .workflow-steps{grid-template-columns:1fr;gap:28px}
  .agent-section{padding:32px 20px}
  .agent-links .button{width:100%}
}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;transition:none!important}}