/* ============================================================
   智达恒通 · 统一设计系统 (agnes-level)
   设计语言：浅色干净、专业；深海军蓝 #0A0E1A 为锚点色；
   Inter + 系统字体；极细分隔线；克制动效。
   ============================================================ */

/* ---------- Design Tokens ---------- */
:root{
  --bg:#ffffff;
  --bg-soft:#f7f8fa;
  --bg-subtle:#fbfbfb;
  --surface:#ffffff;
  --surface-2:#f5f6f8;
  --ink:#0a0e1a;            /* 主文字 / 深色锚点（对标 #020A15） */
  --ink-2:#161c2b;
  --muted:#586068;         /* 次要文字（对标 #586068） */
  --muted-2:#8a93a0;
  --border:#e6e8ec;        /* 极细分隔线（对标 #e5e6eb） */
  --border-strong:#d6dae0;
  --accent:#3b6cff;        /* 主强调蓝 */
  --accent-2:#7c5cff;      /* 次强调紫 */
  --accent-soft:rgba(59,108,255,.10);
  --accent-ink:rgba(10,14,26,.06);
  --grad:linear-gradient(135deg,#3b6cff 0%,#7c5cff 100%);
  --grad-ink:linear-gradient(135deg,#0a0e1a 0%,#16224a 60%,#1b2c63 100%);
  --success:#16a34a;
  --warn:#d97706;
  --danger:#dc2626;
  --radius:14px;
  --radius-lg:22px;
  --radius-sm:10px;
  --shadow-sm:0 1px 2px rgba(10,14,26,.06),0 1px 3px rgba(10,14,26,.05);
  --shadow:0 12px 34px -16px rgba(10,14,26,.22);
  --shadow-lg:0 36px 70px -28px rgba(10,14,26,.34);
  --maxw:1180px;
  --header-h:68px;
  --font:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC','Hiragino Sans GB','Microsoft YaHei','Noto Sans SC',sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,'Courier New',monospace;
  --ease:cubic-bezier(.4,.0,.2,1);
}

/* ---------- Reset ---------- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--font);
  color:var(--ink);
  background:var(--bg);
  line-height:1.6;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:none;background:none}
input,textarea,select{font-family:inherit;font-size:16px}
ul{list-style:none}
h1,h2,h3,h4{line-height:1.18;font-weight:700;letter-spacing:-.02em;color:var(--ink)}
::selection{background:rgba(59,108,255,.18)}

/* ---------- Layout ---------- */
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section-sm{padding:64px 0}
.section-tight{padding:56px 0}
.center{text-align:center}
.lead{color:var(--muted);font-size:18px;line-height:1.7}
.muted{color:var(--muted)}
.maxw-2xl{max-width:720px;margin-left:auto;margin-right:auto}
.maxw-xl{max-width:560px;margin-left:auto;margin-right:auto}

/* ---------- Header / Nav ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  height:var(--header-h);
  display:flex;align-items:center;
  background:rgba(255,255,255,.72);
  backdrop-filter:saturate(180%) blur(14px);
  -webkit-backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid transparent;
  transition:border-color .3s var(--ease),background .3s var(--ease),box-shadow .3s var(--ease);
}
.site-header.scrolled{border-bottom-color:var(--border);box-shadow:0 6px 24px -18px rgba(10,14,26,.4)}
.nav{display:flex;align-items:center;justify-content:space-between;width:100%}
.brand{display:flex;align-items:center;gap:11px;font-weight:700;font-size:17px}
.brand .logo{
  width:38px;height:38px;border-radius:11px;background:var(--grad);
  display:grid;place-items:center;color:#fff;font-weight:800;font-size:15px;
  box-shadow:0 8px 20px -8px rgba(59,108,255,.7);
}
.brand .sub{font-size:11px;color:var(--muted);font-weight:500;letter-spacing:.04em;margin-top:-2px}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{
  padding:9px 14px;border-radius:10px;font-size:14.5px;font-weight:500;color:var(--muted);
  transition:color .2s,background .2s;
}
.nav-links a:hover{color:var(--ink);background:var(--accent-ink)}
.nav-links a.active{color:var(--ink);background:var(--accent-ink)}
.nav-cta{display:flex;align-items:center;gap:10px}
.nav-toggle{display:none;padding:8px;border-radius:10px;color:var(--ink)}
.nav-toggle:hover{background:var(--accent-ink)}

/* mobile menu */
.mobile-menu{
  position:fixed;top:var(--header-h);left:0;right:0;z-index:99;
  background:var(--bg);border-bottom:1px solid var(--border);
  padding:14px 20px 22px;display:none;flex-direction:column;gap:4px;
  box-shadow:var(--shadow);
}
.mobile-menu.open{display:flex}
.mobile-menu a{padding:12px 14px;border-radius:10px;color:var(--ink);font-weight:500}
.mobile-menu a:hover{background:var(--accent-ink)}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 20px;border-radius:12px;font-weight:600;font-size:15px;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s,color .2s;
  white-space:nowrap;border:1px solid transparent;
}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 10px 26px -10px rgba(59,108,255,.7)}
.btn-primary:hover{box-shadow:0 16px 34px -10px rgba(59,108,255,.8);transform:translateY(-1px)}
.btn-ink{background:var(--ink);color:#fff}
.btn-ink:hover{background:#1a2238;transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--border-strong)}
.btn-ghost:hover{border-color:var(--ink);background:var(--accent-ink)}
.btn-soft{background:var(--accent-ink);color:var(--accent)}
.btn-soft:hover{background:rgba(59,108,255,.16)}
.btn-lg{padding:14px 28px;font-size:16px;border-radius:14px}
.btn-block{width:100%}
.btn .arrow{transition:transform .2s var(--ease)}
.btn:hover .arrow{transform:translateX(3px)}

/* ---------- Pills / Badges ---------- */
.pill{
  display:inline-flex;align-items:center;gap:7px;padding:6px 13px;border-radius:100px;
  font-size:13px;font-weight:600;background:var(--accent-ink);color:var(--accent);
  border:1px solid rgba(59,108,255,.18);
}
.pill.gray{background:var(--surface-2);color:var(--muted);border-color:var(--border)}
.pill .dot{width:6px;height:6px;border-radius:50%;background:var(--accent)}
.tag{display:inline-block;padding:4px 10px;border-radius:8px;font-size:12.5px;font-weight:600;background:var(--surface-2);color:var(--muted);border:1px solid var(--border)}

/* ---------- Section headers ---------- */
.eyebrow{font-size:13px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--accent);margin-bottom:14px}
.h2{font-size:clamp(28px,4vw,42px);margin-bottom:16px}
.h3{font-size:22px}
.section-head{max-width:680px;margin:0 auto 52px;text-align:center}
.section-head .lead{margin-top:6px}

/* ---------- Cards / Grid ---------- */
.grid{display:grid;gap:22px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:28px;transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--border-strong)}
.card .ic{
  width:48px;height:48px;border-radius:13px;display:grid;place-items:center;
  background:var(--accent-ink);color:var(--accent);font-size:22px;margin-bottom:18px;
}
.card h3{font-size:19px;margin-bottom:8px}
.card p{color:var(--muted);font-size:15px}
.card .link{display:inline-flex;align-items:center;gap:6px;margin-top:16px;font-weight:600;color:var(--accent);font-size:14.5px}

/* feature icon gradient */
.ic-grad{background:var(--grad);color:#fff;box-shadow:0 10px 22px -10px rgba(59,108,255,.7)}

/* ---------- Hero (深色锚点) ---------- */
.hero{
  position:relative;overflow:hidden;
  background:var(--grad-ink);color:#fff;
  padding:calc(var(--header-h) + 96px) 0 110px;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(60% 50% at 80% 0%,rgba(124,92,255,.35),transparent 60%),
    radial-gradient(50% 50% at 10% 20%,rgba(59,108,255,.30),transparent 55%);
  pointer-events:none;
}
.hero::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:120px;
  background:linear-gradient(to bottom,transparent,var(--bg));
}
.hero-inner{position:relative;z-index:2;text-align:center;max-width:880px;margin:0 auto}
.hero .pill{background:rgba(255,255,255,.10);color:#cdd6ff;border-color:rgba(255,255,255,.18)}
.hero h1{color:#fff;font-size:clamp(34px,6vw,62px);line-height:1.08;margin:22px 0 20px;letter-spacing:-.03em}
.hero h1 .grad{background:linear-gradient(120deg,#9db4ff,#d9c6ff);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.lead{color:rgba(255,255,255,.78);font-size:19px;max-width:660px;margin:0 auto 34px}
.hero-cta{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.hero .btn-ghost{color:#fff;border-color:rgba(255,255,255,.28)}
.hero .btn-ghost:hover{background:rgba(255,255,255,.10);border-color:rgba(255,255,255,.5)}
.hero .btn-ink{background:#fff;color:var(--ink)}
.hero .btn-ink:hover{background:#eef1f7}
.hero-tags{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-top:40px;color:rgba(255,255,255,.6);font-size:13.5px}
.hero-tags span{display:inline-flex;align-items:center;gap:7px}
.hero-tags .dot{width:5px;height:5px;border-radius:50%;background:#7c5cff}

/* hero glow card preview */
.hero-preview{
  position:relative;z-index:2;margin:54px auto 0;max-width:760px;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
  border-radius:18px;padding:18px;backdrop-filter:blur(8px);
  box-shadow:0 40px 80px -30px rgba(0,0,0,.6);
}
.hero-preview .bar{display:flex;gap:7px;margin-bottom:14px}
.hero-preview .bar i{width:11px;height:11px;border-radius:50%;background:rgba(255,255,255,.25)}
.hero-preview .row{display:flex;gap:12px;margin-bottom:14px;align-items:flex-start}
.hero-preview .ava{width:30px;height:30px;border-radius:9px;background:var(--grad);flex:0 0 auto}
.hero-preview .bubble{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.10);border-radius:12px;padding:10px 14px;font-size:14px;color:rgba(255,255,255,.85)}
.hero-preview .bubble.me{background:rgba(124,92,255,.28)}

/* ---------- Logos strip ---------- */
.logos{display:flex;flex-wrap:wrap;gap:36px 56px;align-items:center;justify-content:center;opacity:.7}
.logos .logo-item{font-weight:700;font-size:18px;color:var(--muted);letter-spacing:-.01em}

/* ---------- Stats ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;text-align:center}
.stat .num{font-size:clamp(30px,4vw,44px);font-weight:800;letter-spacing:-.03em;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat .lbl{color:var(--muted);font-size:14.5px;margin-top:6px}

/* ---------- Model cards ---------- */
.model-card{
  position:relative;border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:26px;background:var(--surface);overflow:hidden;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s;
}
.model-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--border-strong)}
.model-card .badge-free{position:absolute;top:20px;right:20px}
.model-card .mname{font-size:20px;font-weight:700;margin-bottom:4px}
.model-card .mtype{font-size:13px;color:var(--accent);font-weight:600;margin-bottom:14px}
.model-card .mdesc{color:var(--muted);font-size:14.5px;min-height:64px}
.model-card .mspecs{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.model-card .spec{font-size:12.5px;color:var(--muted);background:var(--surface-2);border:1px solid var(--border);padding:4px 9px;border-radius:8px}

/* ---------- Pricing ---------- */
.price-card{
  border:1px solid var(--border);border-radius:var(--radius-lg);padding:32px;background:var(--surface);
  display:flex;flex-direction:column;transition:transform .25s,box-shadow .25s,border-color .25s;
}
.price-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.price-card.featured{border-color:transparent;box-shadow:var(--shadow-lg);background:var(--grad-ink);color:#fff;position:relative}
.price-card.featured .muted,.price-card.featured h3{color:#fff}
.price-card.featured .pdesc{color:rgba(255,255,255,.72)}
.price-card.featured .feat li{color:rgba(255,255,255,.9)}
.price-card.featured .feat li::before{color:#9db4ff}
.price-card.featured .btn{border-color:rgba(255,255,255,.3);color:#fff}
.price-card .ribbon{position:absolute;top:18px;right:18px;font-size:12px;font-weight:700;background:var(--grad);color:#fff;padding:4px 10px;border-radius:100px}
.price-card h3{font-size:20px;margin-bottom:6px}
.price-card .pdesc{color:var(--muted);font-size:14px;min-height:40px}
.price-card .amount{font-size:42px;font-weight:800;letter-spacing:-.03em;margin:14px 0 2px}
.price-card .amount .per{font-size:15px;font-weight:500;color:var(--muted)}
.price-card .feat{margin:22px 0;display:flex;flex-direction:column;gap:12px;flex:1}
.price-card .feat li{position:relative;padding-left:26px;font-size:14.5px;color:var(--ink-2)}
.price-card .feat li::before{content:"✓";position:absolute;left:0;top:0;color:var(--accent);font-weight:800}

/* ---------- Case / Quote ---------- */
.case-card{border:1px solid var(--border);border-radius:var(--radius-lg);padding:28px;background:var(--surface)}
.case-card .quote{font-size:17px;line-height:1.7;color:var(--ink-2);margin-bottom:20px}
.case-card .who{display:flex;align-items:center;gap:12px}
.case-card .who .av{width:42px;height:42px;border-radius:50%;background:var(--grad);display:grid;place-items:center;color:#fff;font-weight:700}
.case-card .who .name{font-weight:600}
.case-card .who .role{font-size:13px;color:var(--muted)}

/* ---------- CTA band ---------- */
.cta-band{
  background:var(--grad-ink);color:#fff;border-radius:var(--radius-lg);
  padding:56px 48px;text-align:center;position:relative;overflow:hidden;
}
.cta-band::before{content:"";position:absolute;inset:0;background:radial-gradient(50% 60% at 80% 10%,rgba(124,92,255,.4),transparent 60%)}
.cta-band>*{position:relative;z-index:2}
.cta-band h2{color:#fff;font-size:clamp(26px,3.5vw,38px);margin-bottom:12px}
.cta-band p{color:rgba(255,255,255,.78);max-width:560px;margin:0 auto 26px}

/* ---------- Footer ---------- */
.site-footer{background:var(--bg-soft);border-top:1px solid var(--border);padding:64px 0 32px;margin-top:40px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr 1fr;gap:32px}
.footer-grid .brand{margin-bottom:16px}
.footer-grid .fdesc{color:var(--muted);font-size:14px;max-width:280px}
.footer-col h4{font-size:14px;margin-bottom:16px;color:var(--ink)}
.footer-col a{display:block;color:var(--muted);font-size:14px;padding:6px 0;transition:color .2s}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:14px;
  border-top:1px solid var(--border);margin-top:48px;padding-top:24px;color:var(--muted);font-size:13.5px}
.footer-bottom .links{display:flex;gap:20px}
.footer-bottom .links a:hover{color:var(--accent)}

/* ---------- Forms ---------- */
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;font-weight:600;margin-bottom:7px}
.field input,.field textarea,.field select{
  width:100%;padding:12px 14px;border:1px solid var(--border-strong);border-radius:12px;
  background:var(--surface);color:var(--ink);transition:border-color .2s,box-shadow .2s;
}
.field input:focus,.field textarea:focus,.field select:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 4px var(--accent-soft)}
.field .hint{font-size:12.5px;color:var(--muted);margin-top:6px}
.form-card{max-width:440px;margin:0 auto;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:36px;box-shadow:var(--shadow-sm)}
.form-title{font-size:26px;margin-bottom:6px}
.form-sub{color:var(--muted);font-size:14.5px;margin-bottom:26px}
.form-switch{text-align:center;color:var(--muted);font-size:14px;margin-top:20px}
.form-switch a{color:var(--accent);font-weight:600}
.auth-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:120px 20px 60px;background:var(--grad-ink);position:relative;overflow:hidden}
.auth-wrap::before{content:"";position:absolute;inset:0;background:radial-gradient(50% 50% at 85% 0%,rgba(124,92,255,.35),transparent 60%),radial-gradient(40% 40% at 5% 90%,rgba(59,108,255,.3),transparent 60%)}
.auth-card{position:relative;z-index:2;width:100%;max-width:430px;background:rgba(255,255,255,.97);border-radius:var(--radius-lg);padding:40px;box-shadow:var(--shadow-lg)}
.auth-card .brand{justify-content:center;margin-bottom:22px}
.auth-card .form-title,.auth-card .form-sub{text-align:center}

/* ---------- App shell (studio / anime / agent / admin) ---------- */
.app{display:flex;flex-direction:column;min-height:100vh;padding-top:var(--header-h)}
.app-body{flex:1;display:flex;min-height:0}
.side{width:280px;flex:0 0 280px;border-right:1px solid var(--border);padding:22px;overflow-y:auto;background:var(--bg-subtle)}
.side h4{font-size:12px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted-2);margin:18px 0 10px}
.side .nav-item{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:10px;color:var(--ink-2);font-weight:500;font-size:14.5px;transition:background .2s}
.side .nav-item:hover{background:var(--accent-ink)}
.side .nav-item.active{background:var(--accent-ink);color:var(--accent)}
.side .nav-item .dot{width:7px;height:7px;border-radius:50%;background:var(--accent)}
.main{flex:1;display:flex;flex-direction:column;min-width:0}

/* chat */
.chat-wrap{flex:1;display:flex;flex-direction:column;min-height:0}
.chat-head{padding:16px 24px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;gap:12px}
.chat-head .title{font-weight:700;font-size:16px}
.chat-messages{flex:1;overflow-y:auto;padding:26px 24px;display:flex;flex-direction:column;gap:18px}
.msg{display:flex;gap:12px;max-width:820px}
.msg .av{width:34px;height:34px;border-radius:10px;flex:0 0 auto;display:grid;place-items:center;font-weight:700;color:#fff;font-size:13px}
.msg.bot .av{background:var(--grad)}
.msg.me .av{background:var(--ink)}
.msg .body{background:var(--surface-2);border:1px solid var(--border);border-radius:14px;padding:12px 16px;font-size:15px;line-height:1.7}
.msg.me{flex-direction:row-reverse}
.msg.me .body{background:var(--ink);color:#fff;border-color:var(--ink)}
.msg .body p{margin:0 0 10px}.msg .body p:last-child{margin:0}
.msg .body pre{background:#0d1220;color:#e6edf3;padding:14px;border-radius:10px;overflow:auto;font-size:13px;margin:10px 0}
.msg .body code{font-family:var(--mono);font-size:13px;background:rgba(10,14,26,.06);padding:2px 6px;border-radius:6px}
.msg.me .body code{background:rgba(255,255,255,.15)}
.msg .body pre code{background:none;padding:0}
.chat-input{border-top:1px solid var(--border);padding:16px 24px;display:flex;gap:12px;align-items:flex-end}
.chat-input textarea{flex:1;resize:none;border:1px solid var(--border-strong);border-radius:14px;padding:12px 16px;max-height:160px;background:var(--surface)}
.chat-input textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 4px var(--accent-soft)}
.send-btn{width:46px;height:46px;border-radius:14px;background:var(--grad);color:#fff;display:grid;place-items:center;flex:0 0 auto;box-shadow:0 10px 22px -10px rgba(59,108,255,.7)}
.send-btn:hover{transform:translateY(-1px)}
.send-btn:disabled{opacity:.5;cursor:not-allowed}
.typing{display:inline-flex;gap:4px;padding:4px 0}
.typing i{width:7px;height:7px;border-radius:50%;background:var(--muted-2);animation:blink 1.2s infinite}
.typing i:nth-child(2){animation-delay:.2s}.typing i:nth-child(3){animation-delay:.4s}
@keyframes blink{0%,60%,100%{opacity:.25;transform:translateY(0)}30%{opacity:1;transform:translateY(-3px)}}

/* model select */
.select{appearance:none;background:var(--surface);border:1px solid var(--border-strong);border-radius:10px;padding:9px 32px 9px 12px;font-size:14px;font-weight:600;color:var(--ink);background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23586068' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center}
.select:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 4px var(--accent-soft)}

/* image gen */
.gen-grid{display:grid;grid-template-columns:340px 1fr;gap:0;flex:1;min-height:0}
.gen-form{border-right:1px solid var(--border);padding:24px;overflow-y:auto}
.gen-out{flex:1;padding:24px;overflow-y:auto;display:flex;flex-direction:column;gap:18px}
.gen-img{border-radius:16px;border:1px solid var(--border);overflow:hidden;background:var(--surface-2);position:relative}
.gen-img img{width:100%;display:block}
.gen-img .meta{position:absolute;left:10px;bottom:10px;background:rgba(10,14,26,.7);color:#fff;font-size:12px;padding:4px 10px;border-radius:8px}
.gen-img .dl{position:absolute;right:10px;top:10px;background:rgba(10,14,26,.7);color:#fff;width:34px;height:34px;border-radius:9px;display:grid;place-items:center}
.empty-state{margin:auto;text-align:center;color:var(--muted);max-width:320px}
.empty-state .ic{font-size:44px;margin-bottom:12px}

/* dashboard / account */
.dash-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;padding:24px}
.kpi{border:1px solid var(--border);border-radius:var(--radius);padding:22px;background:var(--surface)}
.kpi .k{font-size:13px;color:var(--muted)}
.kpi .v{font-size:30px;font-weight:800;letter-spacing:-.02em;margin-top:6px}
.kpi .v small{font-size:14px;color:var(--muted);font-weight:500}
.kpi .trend{font-size:12.5px;color:var(--success);margin-top:4px}
.panel{border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);overflow:hidden}
.panel .phead{padding:16px 20px;border-bottom:1px solid var(--border);font-weight:600;display:flex;align-items:center;justify-content:space-between}
.panel .pbody{padding:8px 20px}
.keyrow{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 0;border-bottom:1px solid var(--border)}
.keyrow:last-child{border-bottom:none}
.keyrow .mono{font-family:var(--mono);font-size:13px;color:var(--ink-2);background:var(--surface-2);padding:6px 10px;border-radius:8px;border:1px solid var(--border)}
.keyrow .meta{font-size:12.5px;color:var(--muted)}
.copy-btn{font-size:12.5px;color:var(--accent);font-weight:600;padding:6px 10px;border-radius:8px}
.copy-btn:hover{background:var(--accent-ink)}
.usage-bar{height:8px;border-radius:100px;background:var(--surface-2);overflow:hidden;border:1px solid var(--border)}
.usage-bar i{display:block;height:100%;background:var(--grad)}

/* table */
.tbl{width:100%;border-collapse:collapse;font-size:14px}
.tbl th,.tbl td{text-align:left;padding:12px 14px;border-bottom:1px solid var(--border)}
.tbl th{font-size:12px;text-transform:uppercase;letter-spacing:.05em;color:var(--muted-2);font-weight:700}
.tbl tbody tr:hover{background:var(--bg-subtle)}

/* toast */
.toast-wrap{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);z-index:200;display:flex;flex-direction:column;gap:10px;align-items:center}
.toast{background:var(--ink);color:#fff;padding:12px 20px;border-radius:12px;font-size:14px;box-shadow:var(--shadow-lg);opacity:0;transform:translateY(10px);transition:opacity .3s,transform .3s}
.toast.show{opacity:1;transform:translateY(0)}
.toast.ok{background:#0f172a}.toast.err{background:#7f1d1d}

/* reveal */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.in{opacity:1;transform:none}
.reveal.d1{transition-delay:.08s}.reveal.d2{transition-delay:.16s}.reveal.d3{transition-delay:.24s}.reveal.d4{transition-delay:.32s}

/* misc */
.divider{height:1px;background:var(--border);border:none;margin:0}
.breadcrumb{font-size:13.5px;color:var(--muted);padding:18px 0}
.breadcrumb a:hover{color:var(--accent)}
.page-head{padding:48px 0 8px}
.page-head h1{font-size:clamp(30px,4vw,44px)}
.prose{max-width:760px;margin:0 auto;color:var(--ink-2);font-size:16.5px;line-height:1.85}
.prose h2{font-size:26px;margin:38px 0 14px}
.prose h3{font-size:20px;margin:28px 0 10px}
.prose p{margin-bottom:16px}
.prose ul{margin:0 0 18px;padding-left:22px;list-style:disc}
.prose li{margin-bottom:8px;color:var(--muted)}
.prose code{font-family:var(--mono);font-size:14px;background:var(--surface-2);padding:2px 6px;border-radius:6px;border:1px solid var(--border)}

/* ---------- Responsive ---------- */
@media (max-width:1024px){
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr 1fr}
  .footer-grid .brand-col{grid-column:1/-1}
  .side{display:none}
  .gen-grid{grid-template-columns:1fr}
  .gen-form{border-right:none;border-bottom:1px solid var(--border)}
}
@media (max-width:760px){
  .section{padding:64px 0}
  .nav-links,.nav-cta .desktop-only{display:none}
  .nav-toggle{display:inline-flex}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  .stats{grid-template-columns:repeat(2,1fr);gap:30px 16px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .dash-grid{grid-template-columns:1fr}
  .hero{padding-top:calc(var(--header-h) + 60px)}
  .cta-band{padding:40px 24px}
  .container{padding:0 18px}
}