/* =========================================================
   鲲肽 Quintai — Global Stylesheet
   Pure static. Design tokens locked (UIUX §9). No frameworks.
   ========================================================= */

/* ---------- Design Tokens (locked, do not edit) ---------- */
:root{
  --color-primary:#2563EB; --color-primary-hover:#1D4ED8; --color-primary-active:#1E40AF;
  --color-primary-subtle:#EFF4FF; --color-primary-ring:rgba(37,99,235,.35);
  --color-accent:#0E9F6E; --color-accent-hover:#0B7F58; --color-accent-subtle:#E6F6EF;
  --color-bg:#FFFFFF; --color-bg-subtle:#F8FAFC; --color-bg-muted:#F1F5F9;
  --color-border:#E2E8F0; --color-border-strong:#CBD5E1;
  --color-text:#0F172A; --color-text-secondary:#475569; --color-text-muted:#94A3B8;
  --color-ink:#0B1F3A; --color-on-dark:#F1F5F9; --color-on-dark-muted:#94A3B8;
  --color-success:#16A34A; --color-warning:#D97706; --color-error:#DC2626; --color-info:#2563EB;
  --font-sans:"Inter","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --font-mono:"JetBrains Mono","Fira Code",ui-monospace,SFMono-Regular,monospace;
  --text-xs:12px; --text-sm:14px; --text-base:16px; --text-lg:18px; --text-xl:20px;
  --text-2xl:24px; --text-3xl:32px; --text-4xl:40px; --text-5xl:56px; --text-6xl:64px;
  --radius-sm:6px; --radius-md:10px; --radius-lg:16px; --radius-xl:24px; --radius-full:9999px;
  --shadow-sm:0 1px 2px rgba(15,23,42,.04),0 1px 3px rgba(15,23,42,.06);
  --shadow-md:0 4px 12px rgba(15,23,42,.06);
  --shadow-lg:0 12px 32px rgba(15,23,42,.10);
  --shadow-focus:0 0 0 3px var(--color-primary-ring);
  --duration-fast:150ms; --duration-base:250ms; --duration-slow:400ms;
  --ease:cubic-bezier(.4,0,.2,1);
}

/* ---------- Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;font-family:var(--font-sans);font-size:var(--text-base);line-height:1.65;
  color:var(--color-text);background:var(--color-bg);-webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;text-rendering:optimizeLegibility}
img,svg{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;color:inherit}
input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4,h5,p,figure,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:none;box-shadow:var(--shadow-focus)}

/* ---------- Typography (fluid) ---------- */
.t-display{font-size:clamp(2.5rem,6vw,4rem);line-height:1.04;letter-spacing:-.025em;font-weight:700}
.t-h1{font-size:clamp(2rem,4.6vw,3.5rem);line-height:1.08;letter-spacing:-.02em;font-weight:700}
.t-h2{font-size:clamp(1.6rem,3.4vw,2.5rem);line-height:1.12;letter-spacing:-.015em;font-weight:700}
.t-h3{font-size:var(--text-2xl);line-height:1.25;font-weight:600}
.t-lead{font-size:clamp(1.02rem,1.4vw,1.22rem);line-height:1.65;color:var(--color-text-secondary)}
.t-eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:var(--text-sm);font-weight:600;
  letter-spacing:.04em;text-transform:uppercase;color:var(--color-primary)}
.t-eyebrow.is-accent{color:var(--color-accent)}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:-.01em}
.text-muted{color:var(--color-text-secondary)}
.text-faint{color:var(--color-text-muted)}
.section-title{margin-bottom:14px}
.section-desc{color:var(--color-text-secondary);max-width:62ch}

/* ---------- Layout ---------- */
.container{width:100%;max-width:1200px;margin-inline:auto;padding-inline:24px}
.section{padding-block:clamp(3.5rem,8vw,6.5rem)}
.section-head{max-width:760px;margin-bottom:clamp(2rem,4vw,3rem)}
.section-head .t-lead{margin-top:14px}
.stack-sm{display:flex;flex-direction:column;gap:8px}
.divider{height:1px;background:var(--color-border);border:0;margin:0}

/* ---------- Lucide icons ---------- */
.lucide{stroke-width:1.75;flex:none}
.icon-16{width:16px;height:16px}
.icon-20{width:20px;height:20px}
.icon-24{width:24px;height:24px}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-weight:600;font-size:var(--text-sm);line-height:1;padding:12px 20px;border-radius:var(--radius-md);
  border:1px solid transparent;white-space:nowrap;
  transition:background-color var(--duration-base) var(--ease),color var(--duration-base) var(--ease),
    border-color var(--duration-base) var(--ease),box-shadow var(--duration-base) var(--ease),
    transform var(--duration-fast) var(--ease)}
.btn-primary{background:var(--color-primary);color:#fff}
.btn-primary:hover{background:var(--color-primary-hover);transform:translateY(-1px)}
.btn-primary:active{background:var(--color-primary-active);transform:translateY(0)}
.btn-secondary{background:var(--color-bg);color:var(--color-text);border-color:var(--color-border-strong)}
.btn-secondary:hover{background:var(--color-bg-subtle);border-color:var(--color-primary);color:var(--color-primary)}
.btn-secondary:active{border-color:var(--color-primary-active)}
.btn-ghost{background:transparent;color:var(--color-text-secondary)}
.btn-ghost:hover{background:var(--color-bg-muted);color:var(--color-text)}
.btn-accent{background:var(--color-accent);color:#fff}
.btn-accent:hover{background:var(--color-accent-hover);transform:translateY(-1px)}
.btn-accent:active{background:#096a49}
.btn-sm{padding:9px 14px;font-size:var(--text-sm)}
.btn-lg{padding:14px 26px;font-size:var(--text-base)}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.55;cursor:not-allowed;transform:none;pointer-events:none}
.btn.is-loading{color:transparent!important;position:relative;pointer-events:none}
.btn.is-loading::after{content:"";position:absolute;width:16px;height:16px;border-radius:50%;
  border:2px solid rgba(255,255,255,.45);border-top-color:#fff;animation:spin .7s linear infinite}
.btn-secondary.is-loading::after,.btn-ghost.is-loading::after{border:2px solid rgba(15,23,42,.2);border-top-color:var(--color-primary)}
@keyframes spin{to{transform:rotate(360deg)}}

/* ---------- Header / Nav ---------- */
.site-header{position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.82);backdrop-filter:saturate(180%) blur(12px);
  -webkit-backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid var(--color-border)}
.nav-inner{display:flex;align-items:center;gap:20px;min-height:64px}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:var(--text-lg);
  color:var(--color-text);letter-spacing:-.01em;white-space:nowrap}
.brand-mark{width:22px;height:22px;border-radius:6px;background:var(--color-primary);position:relative;flex:none}
.brand-mark::after{content:"";position:absolute;inset:6px 6px auto auto;width:8px;height:8px;border-radius:2px;
  background:#fff;opacity:.92;top:6px;right:6px}
.brand-name{white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:8px}
.nav-links a{padding:8px 13px;border-radius:var(--radius-sm);font-size:var(--text-sm);font-weight:500;
  color:var(--color-text-secondary);
  transition:color var(--duration-base) var(--ease),background-color var(--duration-base) var(--ease)}
.nav-links a:hover{color:var(--color-text);background:var(--color-bg-muted)}
.nav-links a[aria-current="page"]{color:var(--color-primary);background:var(--color-primary-subtle);font-weight:600}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto}
.lang-pill{display:inline-flex;align-items:center;background:var(--color-bg-muted);border-radius:var(--radius-full);padding:3px}
.lang-pill a{padding:5px 12px;border-radius:var(--radius-full);font-size:var(--text-sm);font-weight:600;
  color:var(--color-text-secondary);transition:color var(--duration-base) var(--ease),background-color var(--duration-base) var(--ease)}
.lang-pill a[aria-current="true"]{background:#fff;color:var(--color-primary);box-shadow:var(--shadow-sm)}
.lang-pill a:hover{color:var(--color-primary)}
.nav-toggle{display:none;width:40px;height:40px;border:1px solid var(--color-border);border-radius:var(--radius-sm);
  background:var(--color-bg);align-items:center;justify-content:center;color:var(--color-text)}
.nav-toggle:hover{background:var(--color-bg-muted)}
.nav-drawer{display:none}

/* ---------- Hero ---------- */
.hero{padding-block:clamp(3rem,7vw,5.5rem)}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(2rem,5vw,4rem);align-items:center}
.hero-copy{max-width:600px}
.hero-title{margin:16px 0 18px}
.hero-sub{margin-bottom:28px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px}
.hero-note{margin-top:22px;display:flex;align-items:center;gap:8px;color:var(--color-text-muted);font-size:var(--text-sm)}
.hero-visual{position:relative}

/* Dashboard mock (CSS/SVG, no stock image) */
.dash{background:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-lg);overflow:hidden}
.dash-bar{display:flex;align-items:center;gap:8px;padding:12px 16px;border-bottom:1px solid var(--color-border);
  background:var(--color-bg-subtle)}
.dash-dot{width:9px;height:9px;border-radius:50%;background:var(--color-border-strong)}
.dash-dot.live{background:var(--color-success)}
.dash-bar .dash-title{font-size:var(--text-sm);font-weight:600;color:var(--color-text-secondary);margin-left:4px}
.dash-body{padding:16px;display:grid;grid-template-columns:1.4fr 1fr;gap:14px}
.panel{background:var(--color-bg-subtle);border:1px solid var(--color-border);border-radius:var(--radius-md);padding:12px}
.panel-label{display:flex;align-items:center;gap:6px;font-size:var(--text-xs);font-weight:600;
  color:var(--color-text-muted);text-transform:uppercase;letter-spacing:.04em;margin-bottom:8px}
.node-map{width:100%;height:auto;background:var(--color-bg);border-radius:var(--radius-sm)}
.node{fill:var(--color-primary)}
.node.soft{fill:var(--color-border-strong)}
.node.green{fill:var(--color-accent)}
.link-line{stroke:var(--color-border-strong);stroke-width:1.4}
.link-line.active{stroke:var(--color-primary);stroke-width:1.6;opacity:.7}
.pulse{transform-origin:center;animation:pulse 2.6s var(--ease) infinite}
@keyframes pulse{0%,100%{opacity:.35}50%{opacity:.9}}
.gauge-wrap{display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center}
.gauge-num{font-family:var(--font-mono);font-size:var(--text-2xl);font-weight:600;color:var(--color-accent);line-height:1}
.gauge-cap{font-size:var(--text-xs);color:var(--color-text-muted);margin-top:6px}
.dash-foot{display:flex;justify-content:space-between;align-items:center;padding:10px 16px;border-top:1px solid var(--color-border);
  font-size:var(--text-xs);color:var(--color-text-muted)}
.dash-foot .tag{display:inline-flex;align-items:center;gap:6px;background:var(--color-accent-subtle);
  color:var(--color-accent-hover);padding:4px 10px;border-radius:var(--radius-full);font-weight:600}

/* ---------- Bento ---------- */
.bento{display:grid;gap:16px;grid-template-columns:repeat(6,1fr)}
.bento > *{grid-column:span 2}
.bento .span-2{grid-column:span 2}
.bento .span-3{grid-column:span 3}
.bento .span-4{grid-column:span 4}
.bento .span-6{grid-column:span 6}
.engine-grid{display:grid;gap:16px;grid-template-columns:1fr 1fr}

/* Card base */
.card{background:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius-lg);
  padding:24px;box-shadow:var(--shadow-sm);transition:border-color var(--duration-base) var(--ease),
  box-shadow var(--duration-base) var(--ease),transform var(--duration-base) var(--ease)}
.card:hover{box-shadow:var(--shadow-md);border-color:var(--color-border-strong)}
.card-icon{width:44px;height:44px;border-radius:var(--radius-md);display:inline-flex;align-items:center;
  justify-content:center;margin-bottom:16px}
.card-icon.blue{background:var(--color-primary-subtle);color:var(--color-primary)}
.card-icon.green{background:var(--color-accent-subtle);color:var(--color-accent)}
.card-icon.ink{background:rgba(255,255,255,.08);color:var(--color-on-dark)}
.card h3{margin-bottom:8px}
.card p{color:var(--color-text-secondary);font-size:var(--text-sm)}
.card-link{display:inline-flex;align-items:center;gap:6px;margin-top:16px;font-weight:600;font-size:var(--text-sm);
  color:var(--color-primary)}
.card-link.green{color:var(--color-accent-hover)}
.card-link .lucide{transition:transform var(--duration-base) var(--ease)}
.card-link:hover .lucide{transform:translateX(3px)}

/* Engine card */
.engine{position:relative;overflow:hidden;border-radius:var(--radius-lg);padding:28px;border:1px solid var(--color-border);
  box-shadow:var(--shadow-sm);transition:box-shadow var(--duration-base) var(--ease),transform var(--duration-base) var(--ease)}
.engine:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}
.engine.blue{background:linear-gradient(180deg,var(--color-primary-subtle),#fff 70%)}
.engine.green{background:linear-gradient(180deg,var(--color-accent-subtle),#fff 70%)}
.engine-tag{display:inline-flex;align-items:center;gap:8px;font-size:var(--text-sm);font-weight:600;
  padding:6px 12px;border-radius:var(--radius-full);margin-bottom:16px}
.engine.blue .engine-tag{background:var(--color-primary);color:#fff}
.engine.green .engine-tag{background:var(--color-accent);color:#fff}
.engine h3{font-size:var(--text-xl);margin-bottom:10px}
.engine p{color:var(--color-text-secondary);margin-bottom:18px}
.engine ul{display:flex;flex-direction:column;gap:10px;margin-bottom:20px}
.engine li{display:flex;align-items:flex-start;gap:10px;font-size:var(--text-sm);color:var(--color-text-secondary)}
.engine li .lucide{color:var(--color-primary);margin-top:2px}
.engine.green li .lucide{color:var(--color-accent-hover)}

/* ---------- Stat band ---------- */
.stat-band{background:var(--color-bg-subtle);border-block:1px solid var(--color-border)}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;padding-block:clamp(2.5rem,5vw,3.5rem)}
.stat{text-align:center;padding:8px 12px}
.stat-num{font-family:var(--font-mono);font-size:clamp(1.8rem,3.4vw,2.6rem);font-weight:600;
  color:var(--color-primary);line-height:1;letter-spacing:-.02em}
.stat-num.is-accent{color:var(--color-accent)}
.stat-label{margin-top:10px;font-size:var(--text-sm);color:var(--color-text-secondary)}
.stat-flag{display:block;margin-top:6px;font-size:var(--text-xs);color:var(--color-text-muted)}

/* ---------- Advantages (bento) ---------- */
.adv{border-color:var(--color-border)}
.adv .card-icon{background:var(--color-primary-subtle);color:var(--color-primary)}
.adv-4,.adv-5{grid-column:span 3}
.adv-6{grid-column:span 6;display:flex;align-items:center;gap:20px;flex-wrap:wrap}
.adv-6 .adv-text{flex:1 1 320px}
.adv-6 .adv-list{display:flex;flex-wrap:wrap;gap:10px;flex:1 1 260px}
.adv-6 .chip{display:inline-flex;align-items:center;gap:8px;background:var(--color-bg-muted);
  border:1px solid var(--color-border);border-radius:var(--radius-full);padding:8px 14px;font-size:var(--text-sm);
  color:var(--color-text-secondary)}

/* ---------- Dark CTA band ---------- */
.cta-band{background:var(--color-ink);color:var(--color-on-dark);border-radius:var(--radius-xl);
  padding:clamp(2.5rem,5vw,4rem);text-align:center;position:relative;overflow:hidden}
.cta-band::before{content:"";position:absolute;inset:0;background:
  radial-gradient(60% 120% at 15% 0%,rgba(37,99,235,.22),transparent 60%),
  radial-gradient(60% 120% at 90% 100%,rgba(14,159,110,.18),transparent 60%);pointer-events:none}
.cta-band > *{position:relative}
.cta-band h2{color:var(--color-on-dark);max-width:18ch;margin-inline:auto}
.cta-band p{color:var(--color-on-dark-muted);max-width:54ch;margin:14px auto 26px}
.cta-band .btn-on-dark{background:#fff;color:var(--color-ink)}
.cta-band .btn-on-dark:hover{background:var(--color-bg-muted)}
.cta-band .btn-line{background:transparent;color:var(--color-on-dark);border-color:rgba(241,245,249,.25)}
.cta-band .btn-line:hover{background:rgba(241,245,249,.08);border-color:rgba(241,245,249,.5)}
.cta-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}

/* ---------- Footer ---------- */
.site-footer{background:var(--color-ink);color:var(--color-on-dark-muted);margin-top:clamp(3rem,6vw,5rem)}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr 1fr;gap:32px;padding-block:clamp(3rem,5vw,4rem)}
.footer-brand .brand{color:var(--color-on-dark);margin-bottom:14px}
.footer-brand .brand-mark{background:var(--color-primary)}
.footer-tag{max-width:34ch;font-size:var(--text-sm);line-height:1.6}
.footer-col h4{color:var(--color-on-dark);font-size:var(--text-sm);font-weight:600;margin-bottom:14px;
  text-transform:uppercase;letter-spacing:.04em}
.footer-col a{display:block;font-size:var(--text-sm);padding:6px 0;color:var(--color-on-dark-muted);
  transition:color var(--duration-base) var(--ease)}
.footer-col a:hover{color:var(--color-on-dark)}
.footer-bottom{border-top:1px solid rgba(241,245,249,.12);padding-block:22px;display:flex;
  justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:var(--text-xs)}
.footer-bottom a{color:var(--color-on-dark-muted)}
.footer-bottom a:hover{color:var(--color-on-dark)}

/* ---------- Sub-hero (interior pages) ---------- */
.subhero{padding-block:clamp(2.5rem,5vw,4rem)}
.subhero-inner{max-width:820px}
.subhero h1{margin:16px 0 16px}
.subhero p{font-size:clamp(1.02rem,1.4vw,1.2rem);color:var(--color-text-secondary)}

/* ---------- Generic content blocks ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.pillar{border-radius:var(--radius-lg);padding:28px;border:1px solid var(--color-border)}
.pillar.blue{background:linear-gradient(180deg,var(--color-primary-subtle),#fff 75%)}
.pillar.green{background:linear-gradient(180deg,var(--color-accent-subtle),#fff 75%)}
.pillar h3{display:flex;align-items:center;gap:10px;margin-bottom:10px;font-size:var(--text-xl)}
.pillar p{color:var(--color-text-secondary);font-size:var(--text-sm)}

/* Timeline */
.timeline{position:relative;margin-top:8px;padding-left:28px}
.timeline::before{content:"";position:absolute;left:7px;top:6px;bottom:6px;width:2px;background:var(--color-border)}
.tl-item{position:relative;padding-bottom:28px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{content:"";position:absolute;left:-28px;top:4px;width:16px;height:16px;border-radius:50%;
  background:var(--color-bg);border:3px solid var(--color-primary)}
.tl-item.green::before{border-color:var(--color-accent)}
.tl-year{font-family:var(--font-mono);font-weight:600;color:var(--color-primary);font-size:var(--text-sm)}
.tl-item.green .tl-year{color:var(--color-accent-hover)}
.tl-item h4{margin:4px 0 6px;font-size:var(--text-lg)}
.tl-item p{color:var(--color-text-secondary);font-size:var(--text-sm);max-width:60ch}

/* Value cards */
.value-grid{display:grid;gap:16px;grid-template-columns:repeat(4,1fr)}
.value{padding:24px;border:1px solid var(--color-border);border-radius:var(--radius-lg);background:var(--color-bg);
  box-shadow:var(--shadow-sm);text-align:left}
.value .card-icon{margin-bottom:14px}
.value h3{font-size:var(--text-lg);margin-bottom:8px}
.value p{font-size:var(--text-sm);color:var(--color-text-secondary)}

/* ---------- Products page ---------- */
.product-hero{border-radius:var(--radius-xl);padding:clamp(2rem,4vw,3rem);border:1px solid var(--color-border);
  margin-bottom:24px;position:relative;overflow:hidden}
.product-hero.blue{background:linear-gradient(180deg,var(--color-primary-subtle),#fff 80%)}
.product-hero.green{background:linear-gradient(180deg,var(--color-accent-subtle),#fff 80%)}
.product-hero h2{margin:14px 0 12px}
.product-hero p{color:var(--color-text-secondary);max-width:60ch}
.product-hero .t-eyebrow{margin-bottom:0}
.feature-grid{display:grid;gap:16px;grid-template-columns:repeat(4,1fr)}
.feature{padding:24px;border:1px solid var(--color-border);border-radius:var(--radius-lg);background:var(--color-bg);
  box-shadow:var(--shadow-sm);transition:border-color var(--duration-base) var(--ease),box-shadow var(--duration-base) var(--ease)}
.feature:hover{box-shadow:var(--shadow-md);border-color:var(--color-border-strong)}
.feature .card-icon{margin-bottom:14px}
.feature h3{font-size:var(--text-lg);margin-bottom:8px}
.feature p{font-size:var(--text-sm);color:var(--color-text-secondary)}

/* Steps */
.steps{display:grid;gap:16px;grid-template-columns:repeat(3,1fr);margin-top:28px}
.step{display:flex;gap:14px;align-items:flex-start;padding:20px;border:1px solid var(--color-border);
  border-radius:var(--radius-md);background:var(--color-bg)}
.step-num{width:34px;height:34px;flex:none;border-radius:50%;background:var(--color-primary-subtle);
  color:var(--color-primary);font-family:var(--font-mono);font-weight:600;display:flex;align-items:center;justify-content:center;font-size:var(--text-sm)}
.step.green .step-num{background:var(--color-accent-subtle);color:var(--color-accent-hover)}
.step h4{font-size:var(--text-base);margin-bottom:4px}
.step p{font-size:var(--text-sm);color:var(--color-text-secondary)}

/* Badge */
.badge{display:inline-flex;align-items:center;gap:8px;font-size:var(--text-sm);font-weight:600;
  padding:7px 14px;border-radius:var(--radius-full);background:var(--color-accent-subtle);color:var(--color-accent-hover);
  border:1px solid rgba(14,159,110,.25)}
.badge .lucide{color:var(--color-accent)}

/* Pull-tab recognition demo */
.ring-demo{margin-top:24px;border:1px dashed var(--color-border-strong);border-radius:var(--radius-lg);
  background:var(--color-bg-subtle);padding:24px}
.ring-demo-head{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:16px}
.ring-demo-stage{display:flex;gap:20px;align-items:center;flex-wrap:wrap}
.ring-thumb{width:120px;height:120px;border-radius:var(--radius-md);border:1px solid var(--color-border);
  background:var(--color-bg);display:flex;align-items:center;justify-content:center;color:var(--color-text-muted);
  flex:none;overflow:hidden}
.ring-thumb svg{width:100%;height:100%}
.ring-thumb.has-img{color:var(--color-accent)}
.ring-info{flex:1 1 260px;min-width:240px}
.ring-status{display:inline-flex;align-items:center;gap:8px;font-size:var(--text-sm);font-weight:600;
  color:var(--color-text-secondary);margin-bottom:12px}
.ring-status.is-busy{color:var(--color-primary)}
.ring-status.is-done{color:var(--color-accent-hover)}
.ring-demo .note{margin-top:16px;font-size:var(--text-xs);color:var(--color-text-muted);
  display:flex;align-items:center;gap:6px}
.spinner{width:16px;height:16px;border-radius:50%;border:2px solid rgba(37,99,235,.25);border-top-color:var(--color-primary);
  animation:spin .7s linear infinite;flex:none}

/* Pricing */
.pricing-grid{display:grid;gap:16px;grid-template-columns:repeat(3,1fr);margin-top:8px}
.price-card{border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:24px;background:var(--color-bg);
  box-shadow:var(--shadow-sm)}
.price-card.featured{border-color:var(--color-primary);box-shadow:var(--shadow-md)}
.price-card h3{font-size:var(--text-lg);margin-bottom:4px}
.price-card .price{font-family:var(--font-mono);font-size:var(--text-3xl);font-weight:600;color:var(--color-text);margin:12px 0 4px}
.price-card .price small{font-size:var(--text-sm);color:var(--color-text-muted);font-weight:400;font-family:var(--font-sans)}
.price-card ul{margin:16px 0 0;display:flex;flex-direction:column;gap:10px}
.price-card li{display:flex;align-items:flex-start;gap:10px;font-size:var(--text-sm);color:var(--color-text-secondary)}
.price-card li .lucide{color:var(--color-primary);margin-top:2px;flex:none}
.price-flag{margin-top:16px;font-size:var(--text-xs);color:var(--color-text-muted);display:flex;gap:6px;align-items:center}

/* ESG subsection */
.esg{background:var(--color-bg-subtle);border:1px solid var(--color-border);border-radius:var(--radius-xl);
  padding:clamp(2rem,4vw,3rem);margin-top:24px}
.esg-grid{display:grid;gap:20px;grid-template-columns:1.2fr 1fr;align-items:center;margin-top:18px}
.esg-points{display:flex;flex-direction:column;gap:14px}
.esg-points li{display:flex;gap:12px;align-items:flex-start}
.esg-points .card-icon{width:38px;height:38px;margin:0;flex:none}
.esg-points h4{font-size:var(--text-base);margin-bottom:2px}
.esg-points p{font-size:var(--text-sm);color:var(--color-text-secondary)}

/* ---------- Contact ---------- */
.contact-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:32px;align-items:start}
.form-card{border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:clamp(1.5rem,3vw,2rem);
  background:var(--color-bg);box-shadow:var(--shadow-sm)}
.form-row{display:grid;gap:16px;grid-template-columns:1fr 1fr;margin-bottom:16px}
.field{display:flex;flex-direction:column;gap:7px;margin-bottom:16px}
.field label{font-size:var(--text-sm);font-weight:600;color:var(--color-text)}
.field .req{color:var(--color-primary)}
.field input,.field textarea{width:100%;padding:11px 13px;border:1px solid var(--color-border-strong);
  border-radius:var(--radius-md);background:var(--color-bg);font-size:var(--text-sm);line-height:1.5;
  transition:border-color var(--duration-base) var(--ease),box-shadow var(--duration-base) var(--ease)}
.field textarea{min-height:120px;resize:vertical}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--color-primary);box-shadow:var(--shadow-focus)}
.field input.is-invalid,.field textarea.is-invalid{border-color:var(--color-error);box-shadow:0 0 0 3px rgba(220,38,38,.18)}
.field .err{font-size:var(--text-xs);color:var(--color-error);min-height:0;display:none}
.field .err.show{display:block}
.form-status{margin-top:6px;font-size:var(--text-sm);border-radius:var(--radius-md);padding:12px 14px;display:none}
.form-status.is-success{display:block;background:var(--color-accent-subtle);color:var(--color-accent-hover);
  border:1px solid rgba(14,159,110,.25)}
.form-status.is-error{display:block;background:#FEF2F2;color:var(--color-error);border:1px solid rgba(220,38,38,.25)}
.link{color:var(--color-primary);text-decoration:underline;text-underline-offset:2px}
.form-actions{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.honeypot{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}

.contact-aside{display:flex;flex-direction:column;gap:16px}
.info-card{border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:22px;background:var(--color-bg);
  box-shadow:var(--shadow-sm)}
.info-card h3{font-size:var(--text-base);margin-bottom:14px;display:flex;align-items:center;gap:8px}
.info-row{display:flex;gap:12px;align-items:flex-start;padding:10px 0;border-top:1px solid var(--color-border)}
.info-row:first-of-type{border-top:0}
.info-row .card-icon{width:36px;height:36px;margin:0;flex:none}
.info-row .k{font-size:var(--text-xs);color:var(--color-text-muted);text-transform:uppercase;letter-spacing:.04em}
.info-row .v{font-size:var(--text-sm);color:var(--color-text);font-weight:500}
.info-row a.v:hover{color:var(--color-primary)}
.map-card{background:var(--color-ink);border-radius:var(--radius-lg);padding:22px;color:var(--color-on-dark);
  display:flex;gap:14px;align-items:flex-start}
.map-card .map-ico{width:44px;height:44px;border-radius:var(--radius-md);background:rgba(255,255,255,.08);
  color:var(--color-on-dark);display:flex;align-items:center;justify-content:center;flex:none}
.map-card h3{font-size:var(--text-base);color:var(--color-on-dark);margin-bottom:6px}
.map-card p{font-size:var(--text-sm);color:var(--color-on-dark-muted)}
.map-card .map-flag{margin-top:12px;font-size:var(--text-xs);color:var(--color-on-dark-muted);
  display:inline-flex;align-items:center;gap:6px}

/* FAQ */
.faq{display:flex;flex-direction:column;gap:12px;margin-top:8px}
.faq-item{border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-bg);overflow:hidden}
.faq-item>summary.faq-q{list-style:none;cursor:pointer}
.faq-item>summary.faq-q::-webkit-details-marker{display:none}
.faq-q{width:100%;text-align:left;display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:16px 18px;font-size:var(--text-base);font-weight:600;background:var(--color-bg);
  border:0;transition:background-color var(--duration-base) var(--ease)}
.faq-q:hover{background:var(--color-bg-subtle)}
.faq-q .lucide{color:var(--color-text-muted);transition:transform var(--duration-base) var(--ease),color var(--duration-base) var(--ease)}
.faq-item[open] .faq-q .lucide{transform:rotate(180deg);color:var(--color-primary)}
.faq-a{padding:0 18px 18px;font-size:var(--text-sm);color:var(--color-text-secondary);line-height:1.6}

/* ---------- Helpers ---------- */
.mt-0{margin-top:0}.mt-1{margin-top:8px}.mt-2{margin-top:16px}.mt-3{margin-top:24px}.mt-4{margin-top:32px}
.mb-1{margin-bottom:8px}.mb-2{margin-bottom:16px}.mb-3{margin-bottom:24px}
.center{text-align:center}
.maxw-60{max-width:60ch}
.tag-soft{display:inline-flex;align-items:center;gap:6px;font-size:var(--text-xs);font-weight:600;
  color:var(--color-text-secondary);background:var(--color-bg-muted);border-radius:var(--radius-full);padding:4px 12px}

/* ---------- Responsive ---------- */
@media (max-width:1024px){
  .feature-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr 1fr}
  .footer-brand{grid-column:1 / -1}
  .esg-grid{grid-template-columns:1fr}
  .value-grid{grid-template-columns:repeat(2,1fr)}
  .pricing-grid{grid-template-columns:1fr}
  .adv-4,.adv-5{grid-column:span 3}
  .adv-6{grid-column:span 6}
}
@media (max-width:991px){
  .bento{grid-template-columns:repeat(2,1fr)}
  .bento > *{grid-column:span 1!important}
  .bento .span-3,.bento .span-4,.bento .span-6{grid-column:span 2!important}
  .hero-grid{grid-template-columns:1fr}
  .hero-visual{order:-1}
  .split{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .stat-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:1fr}
  .engine-grid{grid-template-columns:1fr}
}
@media (max-width:767px){
  .container{padding-inline:18px}
  .nav-links{display:none}
  .nav-toggle{display:inline-flex}
  .nav-actions .btn-primary{display:none}
  .nav-drawer{display:none;flex-direction:column;gap:2px;padding:10px 18px 18px;border-top:1px solid var(--color-border);
    background:var(--color-bg)}
  .nav-drawer.open{display:flex}
  .nav-drawer a{padding:13px 10px;border-radius:var(--radius-sm);font-weight:500;color:var(--color-text-secondary);
    font-size:var(--text-base)}
  .nav-drawer a[aria-current="page"]{color:var(--color-primary);background:var(--color-primary-subtle);font-weight:600}
  .nav-drawer .btn{margin-top:10px}
  .feature-grid{grid-template-columns:1fr}
  .value-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .stat-grid{grid-template-columns:1fr 1fr}
  .form-row{grid-template-columns:1fr}
  .bento{grid-template-columns:1fr}
  .bento .span-3,.bento .span-4,.bento .span-6{grid-column:span 1!important}
  .engine-grid{grid-template-columns:1fr}
  .esg-grid{grid-template-columns:1fr}
}
@media (max-width:480px){
  .footer-grid{grid-template-columns:1fr}
  .stat-grid{grid-template-columns:1fr 1fr}
  .dash-body{grid-template-columns:1fr}
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;
    scroll-behavior:auto!important}
}