/* ============================================================
   TFChat — 官网样式表 / Official site stylesheet
   Brand: deep navy → blue gradient with turquoise accent
   Self-contained, no external requests. Light theme.
   ============================================================ */

/* ---------- Design tokens ---------- */
:root {
  /* Brand */
  --ink: #0f1e30;
  --navy-900: #0d1f38;
  --navy-800: #14315a;
  --navy-700: #1f3a5f;
  --brand-700: #245a95;
  --brand-600: #2c6fb2;
  --brand-500: #4a90d9;
  --brand-400: #6ea8e2;
  --accent-500: #12b5ac; /* turquoise — decorative fills only */
  --accent-400: #1fd3c5;
  --accent-300: #6fe6db;
  --accent-600: #0a857e; /* darker teal — safe for white text / on-white text */
  --warm-500: #f59e5c; /* AI highlight */

  /* Neutrals */
  --text: #1c2b3a;
  --text-soft: #4a5b6e;
  --text-muted: #5f6d7c;
  --line: #e4eaf1;
  --line-soft: #eef2f7;
  --surface: #ffffff;
  --surface-2: #f6f9fc;
  --surface-3: #eef4fb;

  /* Effects */
  --radius-sm: 10px;
  --radius: 16px;
  --radius-lg: 22px;
  --radius-xl: 30px;
  --shadow-sm: 0 2px 8px rgba(15, 40, 71, 0.06);
  --shadow: 0 14px 40px rgba(15, 40, 71, 0.10);
  --shadow-lg: 0 30px 70px rgba(12, 38, 71, 0.18);
  --shadow-brand: 0 18px 40px rgba(44, 111, 178, 0.28);

  --gradient-hero: linear-gradient(135deg, #0d1f38 0%, #16315a 46%, #26558f 100%);
  --gradient-brand: linear-gradient(120deg, #2c6fb2 0%, #4a90d9 100%);
  --gradient-accent: linear-gradient(120deg, #12b5ac 0%, #4a90d9 100%);
  --gradient-accent-strong: linear-gradient(120deg, #0a857e 0%, #2c6fb2 100%);

  --maxw: 1180px;
  --nav-h: 68px;

  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue",
    Arial, sans-serif;
}

/* ---------- Reset / base ---------- */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--nav-h) + 16px); }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background: var(--surface);
  line-height: 1.65;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
h1, h2, h3, h4 { color: var(--ink); line-height: 1.18; margin: 0; font-weight: 750; letter-spacing: -0.01em; }
p { margin: 0; }
a { color: inherit; text-decoration: none; }
img, svg { max-width: 100%; display: block; }
ul { margin: 0; padding: 0; list-style: none; }
:focus-visible { outline: 3px solid rgba(74, 144, 217, 0.55); outline-offset: 2px; border-radius: 6px; }

/* ---------- Language toggle mechanics ---------- */
body[data-lang="zh"] .lang-pt { display: none !important; }
body[data-lang="pt"] .lang-zh { display: none !important; }

/* ---------- Layout helpers ---------- */
.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.section { padding: 96px 0; position: relative; }
.section--tight { padding: 72px 0; }
.section-head { max-width: 720px; margin: 0 auto 56px; text-align: center; }
.section-head.left { margin-left: 0; text-align: left; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--brand-600); background: var(--surface-3);
  padding: 6px 14px; border-radius: 999px; margin-bottom: 18px;
}
.eyebrow::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--accent-500); }
h2.section-title { font-size: clamp(28px, 4vw, 42px); margin-bottom: 16px; }
.section-sub { font-size: clamp(16px, 2vw, 18px); color: var(--text-soft); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  font-family: inherit; font-size: 15px; font-weight: 650; cursor: pointer;
  padding: 13px 24px; border-radius: 999px; border: 1.5px solid transparent;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease, color 0.18s ease;
  white-space: nowrap;
}
.btn svg { width: 18px; height: 18px; }
.btn-primary { background: var(--gradient-brand); color: #fff; box-shadow: var(--shadow-brand); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 22px 46px rgba(44, 111, 178, 0.38); }
.btn-accent { background: var(--gradient-accent-strong); color: #fff; box-shadow: 0 16px 34px rgba(10, 133, 126, 0.3); }
.btn-accent:hover { transform: translateY(-2px); }
.btn-ghost { background: rgba(255, 255, 255, 0.08); color: #fff; border-color: rgba(255, 255, 255, 0.35); }
.btn-ghost:hover { background: rgba(255, 255, 255, 0.16); transform: translateY(-2px); }
.btn-outline { background: #fff; color: var(--brand-600); border-color: var(--line); box-shadow: var(--shadow-sm); }
.btn-outline:hover { border-color: var(--brand-500); color: var(--brand-700); transform: translateY(-2px); }
.btn-lg { padding: 15px 30px; font-size: 16px; }
.btn-block { width: 100%; }

/* ---------- Navbar ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100; height: var(--nav-h);
  display: flex; align-items: center;
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
}
.nav.scrolled { border-bottom-color: var(--line); box-shadow: 0 6px 24px rgba(15, 40, 71, 0.06); }
.nav .container { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.brand { display: flex; align-items: center; gap: 11px; font-weight: 750; color: var(--ink); font-size: 19px; letter-spacing: -0.02em; }
.brand-mark {
  width: 38px; height: 38px; border-radius: 11px; flex: none;
  background: var(--gradient-brand); color: #fff; box-shadow: var(--shadow-brand);
  display: grid; place-items: center; font-weight: 800; font-size: 15px; letter-spacing: 0.02em;
}
.brand small { display: block; font-size: 11px; font-weight: 600; color: var(--text-muted); letter-spacing: 0; margin-top: -2px; }
.nav-links { display: flex; align-items: center; gap: 6px; }
.nav-links a {
  font-size: 14.5px; font-weight: 550; color: var(--text-soft);
  padding: 8px 14px; border-radius: 8px; transition: color 0.15s, background 0.15s;
}
.nav-links a:hover { color: var(--brand-600); background: var(--surface-2); }
.nav-actions { display: flex; align-items: center; gap: 10px; }

/* language switch */
.lang-switch { display: inline-flex; background: var(--surface-2); border: 1px solid var(--line); border-radius: 999px; padding: 3px; }
.lang-switch button {
  font-family: inherit; border: none; background: transparent; cursor: pointer;
  font-size: 13px; font-weight: 650; color: var(--text-muted); padding: 5px 12px; border-radius: 999px;
  transition: color 0.15s, background 0.15s;
}
.lang-switch button.active { background: #fff; color: var(--brand-700); box-shadow: var(--shadow-sm); }

.nav-toggle { display: none; width: 42px; height: 42px; border: 1px solid var(--line); background: #fff; border-radius: 11px; cursor: pointer; }
.nav-toggle span { display: block; width: 18px; height: 2px; background: var(--ink); margin: 4px auto; border-radius: 2px; transition: 0.25s; }
.nav-toggle.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero { position: relative; background: var(--gradient-hero); color: #fff; padding: calc(var(--nav-h) + 78px) 0 96px; overflow: hidden; }
.hero::before,
.hero::after {
  content: ""; position: absolute; border-radius: 50%; filter: blur(70px); opacity: 0.5; pointer-events: none;
}
.hero::before { width: 520px; height: 520px; background: radial-gradient(circle, rgba(31, 211, 197, 0.5), transparent 70%); top: -160px; right: -120px; }
.hero::after { width: 460px; height: 460px; background: radial-gradient(circle, rgba(74, 144, 217, 0.55), transparent 70%); bottom: -180px; left: -140px; }
.hero-grid {
  position: relative; z-index: 2; display: grid; grid-template-columns: 1.05fr 1fr;
  gap: 56px; align-items: center;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 9px; font-size: 13px; font-weight: 650; letter-spacing: 0.02em;
  background: rgba(255, 255, 255, 0.1); border: 1px solid rgba(255, 255, 255, 0.22);
  padding: 7px 15px; border-radius: 999px; margin-bottom: 24px; color: #dbeafe;
}
.hero-badge .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent-400); box-shadow: 0 0 0 4px rgba(31, 211, 197, 0.25); }
.hero h1 { color: #fff; font-size: clamp(34px, 5.2vw, 56px); line-height: 1.08; letter-spacing: -0.025em; margin-bottom: 22px; }
.hero h1 .grad { background: linear-gradient(100deg, #6fe6db, #8fc2ff); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.hero-sub { font-size: clamp(16px, 2.1vw, 19px); color: #c7d7ec; max-width: 540px; margin-bottom: 34px; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 30px; }
.hero-meta { display: flex; flex-wrap: wrap; gap: 22px; color: #a9c0dc; font-size: 14px; }
.hero-meta span { display: inline-flex; align-items: center; gap: 8px; }
.hero-meta svg { width: 17px; height: 17px; color: var(--accent-300); }

/* ---------- Product mockup ---------- */
.mockup { position: relative; z-index: 2; }
.window {
  background: #fff; border-radius: var(--radius-lg); box-shadow: var(--shadow-lg);
  overflow: hidden; border: 1px solid rgba(255, 255, 255, 0.5);
  transform: perspective(1600px) rotateY(-9deg) rotateX(3deg); transform-origin: left center;
}
.win-bar { display: flex; align-items: center; gap: 7px; padding: 12px 16px; background: #f4f7fb; border-bottom: 1px solid var(--line); }
.win-bar i { width: 11px; height: 11px; border-radius: 50%; display: block; }
.win-bar i:nth-child(1) { background: #ff6159; }
.win-bar i:nth-child(2) { background: #ffbd2e; }
.win-bar i:nth-child(3) { background: #29c940; }
.win-bar .win-title { margin-left: 10px; font-size: 12px; color: var(--text-muted); font-weight: 600; }
.win-body { display: grid; grid-template-columns: 88px 1fr 128px; height: 340px; }
.win-list { border-right: 1px solid var(--line-soft); background: #fafcfe; padding: 12px 8px; }
.win-conv { display: flex; align-items: center; gap: 7px; padding: 7px 6px; border-radius: 9px; margin-bottom: 4px; }
.win-conv.active { background: var(--surface-3); }
.win-conv .av { width: 26px; height: 26px; border-radius: 50%; flex: none; background: var(--gradient-brand); }
.win-conv .av.g2 { background: linear-gradient(120deg, #f59e5c, #f4b678); }
.win-conv .av.g3 { background: linear-gradient(120deg, #12b5ac, #4a90d9); }
.win-conv .ln { height: 6px; border-radius: 4px; background: #dbe4ee; flex: 1; }
.win-conv.active .ln { background: #b9d0ea; }
.win-chat { padding: 16px 15px; display: flex; flex-direction: column; gap: 11px; background: linear-gradient(180deg, #fbfdff, #f5f9fd); }
.bubble { max-width: 78%; padding: 9px 12px; border-radius: 13px; font-size: 11.5px; line-height: 1.5; box-shadow: var(--shadow-sm); }
.bubble.in { align-self: flex-start; background: #fff; border-bottom-left-radius: 4px; color: var(--text); }
.bubble.out { align-self: flex-end; background: var(--gradient-brand); color: #fff; border-bottom-right-radius: 4px; }
.bubble .ai-tag { display: inline-flex; align-items: center; gap: 4px; font-size: 9px; font-weight: 700; letter-spacing: 0.04em; background: rgba(255, 255, 255, 0.22); padding: 2px 6px; border-radius: 6px; margin-bottom: 5px; }
.bubble .flag { font-size: 10px; opacity: 0.85; }
.win-ctx { border-left: 1px solid var(--line-soft); background: #fafcfe; padding: 13px 11px; }
.ctx-card { background: #fff; border: 1px solid var(--line-soft); border-radius: 10px; padding: 9px; margin-bottom: 9px; box-shadow: var(--shadow-sm); }
.ctx-card .th { height: 44px; border-radius: 7px; background: linear-gradient(120deg, #e7eefb, #d9e8f7); margin-bottom: 7px; }
.ctx-card .ln { height: 5px; border-radius: 3px; background: #e0e7f0; margin-bottom: 5px; }
.ctx-card .ln.s { width: 60%; }
.ctx-tag { display: inline-block; font-size: 9px; font-weight: 700; color: var(--brand-600); background: var(--surface-3); padding: 3px 7px; border-radius: 6px; }
.float-card {
  position: absolute; background: #fff; border-radius: 14px; box-shadow: var(--shadow-lg);
  padding: 12px 15px; display: flex; align-items: center; gap: 11px; z-index: 3; border: 1px solid var(--line-soft);
}
.float-card .ic { width: 34px; height: 34px; border-radius: 10px; display: grid; place-items: center; color: #fff; flex: none; }
.float-card .t { font-size: 12px; font-weight: 750; color: var(--ink); }
.float-card .s { font-size: 11px; color: var(--text-muted); }
.float-1 { top: -22px; left: -26px; }
.float-1 .ic { background: var(--gradient-accent); }
.float-2 { bottom: -24px; right: -18px; }
.float-2 .ic { background: linear-gradient(120deg, #f59e5c, #f4b678); }

/* ---------- Logos / trust strip ---------- */
.strip { background: var(--surface-2); border-top: 1px solid var(--line-soft); border-bottom: 1px solid var(--line-soft); padding: 30px 0; }
.strip-inner { display: flex; align-items: center; justify-content: center; flex-wrap: wrap; gap: 14px 30px; }
.strip-label { font-size: 13px; color: var(--text-muted); font-weight: 600; }
.chan-pill { display: inline-flex; align-items: center; gap: 8px; font-size: 14px; font-weight: 700; color: var(--navy-700); padding: 8px 16px; background: #fff; border: 1px solid var(--line); border-radius: 999px; box-shadow: var(--shadow-sm); }
.chan-pill .d { width: 9px; height: 9px; border-radius: 50%; background: var(--accent-500); }
.chan-pill.soon { color: var(--text-muted); }
.chan-pill.soon .d { background: #c6d0dc; }
.chan-pill .soon-tag { font-size: 10px; font-weight: 700; color: var(--text-muted); background: var(--surface-2); padding: 2px 6px; border-radius: 5px; }

/* ---------- Stats ---------- */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.stat { text-align: center; padding: 30px 18px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow-sm); }
.stat .num { font-size: clamp(30px, 4vw, 42px); font-weight: 800; letter-spacing: -0.02em; background: var(--gradient-brand); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.stat .lbl { font-size: 14.5px; color: var(--text-soft); margin-top: 6px; font-weight: 550; }

/* ---------- Feature grid ---------- */
.features { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.feature {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px 24px; box-shadow: var(--shadow-sm);
  transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
}
.feature:hover { transform: translateY(-5px); box-shadow: var(--shadow); border-color: #d3e2f2; }
.feature .fic { width: 48px; height: 48px; border-radius: 13px; display: grid; place-items: center; margin-bottom: 18px; background: var(--surface-3); color: var(--brand-600); }
.feature:nth-child(4n+2) .fic { background: rgba(18, 181, 172, 0.12); color: var(--accent-500); }
.feature:nth-child(4n+3) .fic { background: rgba(245, 158, 92, 0.14); color: var(--warm-500); }
.feature:nth-child(4n) .fic { background: rgba(74, 144, 217, 0.12); color: var(--brand-500); }
.feature .fic svg { width: 25px; height: 25px; }
.feature h3 { font-size: 18px; margin-bottom: 9px; }
.feature p { font-size: 14.5px; color: var(--text-soft); }

.features.two { grid-template-columns: repeat(2, 1fr); }

/* ---------- AI section ---------- */
.ai-sec { background: var(--gradient-hero); color: #fff; overflow: hidden; position: relative; }
.ai-sec::before { content: ""; position: absolute; width: 600px; height: 600px; border-radius: 50%; background: radial-gradient(circle, rgba(31,211,197,0.35), transparent 70%); filter: blur(60px); top: -200px; left: -160px; }
.ai-grid { position: relative; z-index: 2; display: grid; grid-template-columns: 0.95fr 1.05fr; gap: 56px; align-items: center; }
.ai-sec .eyebrow { background: rgba(255,255,255,0.1); color: #9fe6dd; }
.ai-sec .eyebrow::before { background: var(--accent-400); }
.ai-sec h2 { color: #fff; font-size: clamp(28px, 4vw, 40px); margin-bottom: 18px; }
.ai-sec .lead { color: #c7d7ec; font-size: 17px; margin-bottom: 26px; }
.guard-list { display: grid; gap: 12px; }
.guard {
  display: flex; gap: 14px; align-items: flex-start; padding: 16px 18px;
  background: rgba(255, 255, 255, 0.06); border: 1px solid rgba(255, 255, 255, 0.12); border-radius: 14px;
  transition: background 0.2s, transform 0.2s;
}
.guard:hover { background: rgba(255, 255, 255, 0.1); transform: translateX(4px); }
.guard .gic { width: 34px; height: 34px; border-radius: 9px; flex: none; display: grid; place-items: center; background: rgba(31, 211, 197, 0.18); color: var(--accent-300); }
.guard .gic svg { width: 18px; height: 18px; }
.guard h3 { color: #fff; font-size: 15.5px; margin-bottom: 3px; font-weight: 700; }
.guard p { color: #aec4de; font-size: 13.5px; line-height: 1.55; }

/* AI reasoning panel (right) */
.ai-panel { background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.14); border-radius: var(--radius-lg); padding: 22px; backdrop-filter: blur(6px); }
.ai-panel-head { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; padding-bottom: 16px; border-bottom: 1px solid rgba(255,255,255,0.12); }
.ai-panel-head .pdot { width: 10px; height: 10px; border-radius: 50%; background: var(--accent-400); box-shadow: 0 0 0 4px rgba(31,211,197,0.22); }
.ai-panel-head .t { font-weight: 700; font-size: 15px; }
.ai-panel-head .t small { display: block; font-size: 11.5px; color: #9fb6d4; font-weight: 500; }
.ctx-row { display: flex; align-items: center; gap: 11px; padding: 10px 0; font-size: 13.5px; color: #cdddef; }
.ctx-row .ci { width: 30px; height: 30px; border-radius: 8px; flex: none; display: grid; place-items: center; background: rgba(255,255,255,0.08); color: var(--accent-300); }
.ctx-row .ci svg { width: 16px; height: 16px; }
.ctx-row .cx { flex: 1; }
.ctx-row .chk { color: var(--accent-400); }
.ai-out { margin-top: 16px; padding: 14px 16px; border-radius: 13px; background: var(--gradient-brand); box-shadow: var(--shadow-brand); }
.ai-out .aihdr { display: inline-flex; align-items: center; gap: 6px; font-size: 10.5px; font-weight: 700; letter-spacing: 0.05em; background: rgba(255,255,255,0.2); padding: 3px 8px; border-radius: 7px; margin-bottom: 8px; }
.ai-out p { font-size: 13.5px; color: #fff; }

/* ---------- Steps ---------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; counter-reset: step; }
.step { position: relative; padding: 30px 24px 26px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow-sm); }
.step .snum {
  width: 42px; height: 42px; border-radius: 12px; display: grid; place-items: center;
  background: var(--gradient-brand); color: #fff; font-weight: 800; font-size: 18px; margin-bottom: 16px; box-shadow: var(--shadow-brand);
}
.step h3 { font-size: 17px; margin-bottom: 8px; }
.step p { font-size: 14px; color: var(--text-soft); }
.step .connector { position: absolute; top: 52px; right: -13px; color: var(--brand-400); z-index: 3; }
.step:last-child .connector { display: none; }

/* ---------- Security / capabilities split ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.sec-list { display: grid; gap: 14px; }
.sec-item { display: flex; gap: 13px; align-items: flex-start; }
.sec-item .si { width: 32px; height: 32px; border-radius: 9px; flex: none; display: grid; place-items: center; background: var(--surface-3); color: var(--brand-600); }
.sec-item .si svg { width: 18px; height: 18px; }
.sec-item h3 { font-size: 15.5px; margin-bottom: 2px; font-weight: 700; }
.sec-item p { font-size: 14px; color: var(--text-soft); }
.panel-card { background: var(--gradient-hero); border-radius: var(--radius-lg); padding: 34px; color: #fff; box-shadow: var(--shadow-lg); position: relative; overflow: hidden; }
.panel-card::after { content: ""; position: absolute; width: 340px; height: 340px; border-radius: 50%; background: radial-gradient(circle, rgba(31,211,197,0.3), transparent 70%); filter: blur(50px); bottom: -140px; right: -120px; }
.panel-card h3 { color: #fff; font-size: 22px; margin-bottom: 8px; position: relative; }
.panel-card > p { color: #c7d7ec; font-size: 15px; margin-bottom: 22px; position: relative; }
.mini-metrics { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; position: relative; }
.mini-metric { background: rgba(255,255,255,0.07); border: 1px solid rgba(255,255,255,0.13); border-radius: 13px; padding: 16px; }
.mini-metric .mm-num { font-size: 26px; font-weight: 800; color: var(--accent-300); }
.mini-metric .mm-lbl { font-size: 12.5px; color: #b6cae1; margin-top: 3px; }

/* ---------- Pricing ---------- */
.pricing { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; align-items: stretch; }
.price-card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: 32px 28px; box-shadow: var(--shadow-sm); display: flex; flex-direction: column;
  transition: transform 0.2s, box-shadow 0.2s;
}
.price-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.price-card.featured { border: 2px solid var(--brand-500); box-shadow: var(--shadow); position: relative; }
.price-card.featured .pop-badge {
  position: absolute; top: -13px; left: 50%; transform: translateX(-50%);
  background: var(--gradient-brand); color: #fff; font-size: 12px; font-weight: 700; padding: 5px 16px; border-radius: 999px; box-shadow: var(--shadow-brand); white-space: nowrap;
}
.price-card .pname { font-size: 15px; font-weight: 700; color: var(--brand-600); letter-spacing: 0.02em; }
.price-card .pprice { font-size: 34px; font-weight: 800; color: var(--ink); margin: 10px 0 2px; letter-spacing: -0.02em; }
.price-card .pprice small { font-size: 15px; font-weight: 600; color: var(--text-muted); }
.price-card .pdesc { font-size: 14px; color: var(--text-soft); min-height: 42px; margin-bottom: 20px; }
.price-card ul { display: grid; gap: 11px; margin-bottom: 26px; flex: 1; }
.price-card li { display: flex; gap: 10px; align-items: flex-start; font-size: 14px; color: var(--text-soft); }
.price-card li svg { width: 18px; height: 18px; color: var(--accent-500); flex: none; margin-top: 1px; }

/* ---------- About / parent brand ---------- */
.about { background: var(--surface-2); }
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.suite { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
.suite .p { display: inline-flex; align-items: center; gap: 7px; font-size: 13.5px; font-weight: 650; color: var(--navy-700); background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: 9px 14px; box-shadow: var(--shadow-sm); }
.suite .p.self { background: var(--gradient-brand); color: #fff; border-color: transparent; box-shadow: var(--shadow-brand); }
.suite .p .d { width: 7px; height: 7px; border-radius: 50%; background: var(--accent-500); }
.suite .p.self .d { background: #fff; }

/* ---------- CTA band ---------- */
.cta-band { background: var(--gradient-brand); border-radius: var(--radius-xl); padding: 56px 48px; text-align: center; color: #fff; box-shadow: var(--shadow-lg); position: relative; overflow: hidden; }
.cta-band::before { content: ""; position: absolute; width: 400px; height: 400px; border-radius: 50%; background: radial-gradient(circle, rgba(255,255,255,0.16), transparent 70%); top: -180px; left: -80px; }
.cta-band::after { content: ""; position: absolute; width: 360px; height: 360px; border-radius: 50%; background: radial-gradient(circle, rgba(18,181,172,0.4), transparent 70%); bottom: -160px; right: -60px; }
.cta-band h2 { color: #fff; font-size: clamp(26px, 3.6vw, 38px); margin-bottom: 14px; position: relative; }
.cta-band p { color: #e4eefb; font-size: 17px; margin: 0 auto 28px; max-width: 560px; position: relative; }
.cta-band .hero-cta { justify-content: center; position: relative; }
.cta-band .btn-primary { background: #fff; color: var(--brand-700); }
.cta-band .btn-primary:hover { background: #f2f7ff; }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.contact-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.contact-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; box-shadow: var(--shadow-sm); transition: transform 0.2s, box-shadow 0.2s; }
.contact-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.contact-card .cic { width: 42px; height: 42px; border-radius: 11px; display: grid; place-items: center; background: var(--surface-3); color: var(--brand-600); margin-bottom: 14px; }
.contact-card .cic svg { width: 22px; height: 22px; }
.contact-card .clabel { font-size: 12.5px; color: var(--text-muted); font-weight: 600; text-transform: uppercase; letter-spacing: 0.04em; }
.contact-card .cval { font-size: 16px; font-weight: 700; color: var(--ink); margin-top: 3px; word-break: break-word; }
.contact-card .cval a:hover { color: var(--brand-600); }
.contact-card .csub { font-size: 13px; color: var(--text-soft); margin-top: 3px; }
.contact-card.wa .cic { background: rgba(37, 211, 102, 0.14); color: #1faa4f; }

.contact-side { background: var(--gradient-hero); border-radius: var(--radius-lg); padding: 34px; color: #fff; box-shadow: var(--shadow-lg); position: relative; overflow: hidden; }
.contact-side::after { content: ""; position: absolute; width: 320px; height: 320px; border-radius: 50%; background: radial-gradient(circle, rgba(31,211,197,0.3), transparent 70%); filter: blur(50px); top: -120px; right: -110px; }
.contact-side h3 { color: #fff; font-size: 22px; margin-bottom: 10px; position: relative; }
.contact-side p { color: #c7d7ec; font-size: 15px; margin-bottom: 24px; position: relative; }
.contact-side .btn { position: relative; }
.social { display: flex; gap: 12px; margin-top: 26px; position: relative; }
.social a { width: 42px; height: 42px; border-radius: 11px; display: grid; place-items: center; background: rgba(255,255,255,0.1); border: 1px solid rgba(255,255,255,0.16); color: #fff; transition: background 0.2s, transform 0.2s; }
.social a:hover { background: rgba(255,255,255,0.2); transform: translateY(-3px); }
.social a svg { width: 20px; height: 20px; }

/* ---------- Footer ---------- */
.footer { background: var(--navy-900); color: #a9c0dc; padding: 56px 0 28px; }
.footer-top { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 36px; padding-bottom: 36px; border-bottom: 1px solid rgba(255,255,255,0.1); }
.footer .brand { color: #fff; margin-bottom: 14px; }
.footer .brand small { color: #7e93ae; }
.footer-about { font-size: 14px; color: #93a9c6; max-width: 300px; }
.footer h3 { color: #fff; font-size: 14px; font-weight: 700; margin: 0 0 16px; letter-spacing: 0.02em; }
.footer-links { display: grid; gap: 10px; }
.footer-links a, .footer-links li { font-size: 14px; color: #9fb4d0; }
.footer-links a:hover { color: #fff; }
.footer-bottom { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; padding-top: 24px; font-size: 13px; color: #7e93ae; }
.footer-bottom a:hover { color: #cfe0f2; }

/* ---------- Reveal animation ---------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity 0.7s cubic-bezier(0.2, 0.7, 0.2, 1), transform 0.7s cubic-bezier(0.2, 0.7, 0.2, 1); }
.reveal.in { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: 0.08s; }
.reveal.d2 { transition-delay: 0.16s; }
.reveal.d3 { transition-delay: 0.24s; }

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .hero-grid, .ai-grid, .split, .about-grid, .contact-grid { grid-template-columns: 1fr; gap: 44px; }
  .mockup { max-width: 560px; margin: 0 auto; }
  .window { transform: none; }
  .float-1 { left: 0; }
  .float-2 { right: 0; }
  .features, .stats { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .step .connector { display: none; }
  .pricing { grid-template-columns: 1fr; max-width: 460px; margin: 0 auto; }
  .footer-top { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 900px) {
  .nav-links { display: none; }
  .nav-toggle { display: block; }
  .nav-actions .btn-primary { display: none; }
  .nav.open .nav-links {
    display: flex; flex-direction: column; align-items: stretch; gap: 2px;
    position: absolute; top: var(--nav-h); left: 0; right: 0; background: #fff;
    padding: 14px 20px 20px; border-bottom: 1px solid var(--line); box-shadow: var(--shadow);
  }
  .nav.open .nav-links a { padding: 12px 14px; font-size: 15px; }
}
@media (max-width: 720px) {
  .section { padding: 68px 0; }
  .features, .stats, .contact-cards, .footer-top { grid-template-columns: 1fr; }
  .mini-metrics { grid-template-columns: 1fr 1fr; }
  .cta-band { padding: 44px 24px; }
  .hero-cta .btn, .cta-band .btn { flex: 1; }
  .container { padding: 0 18px; }
}
@media (max-width: 420px) {
  .steps { grid-template-columns: 1fr; }
  .win-body { grid-template-columns: 74px 1fr; }
  .win-ctx { display: none; }
}

/* reduced motion */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  * { animation-duration: 0.001ms !important; transition-duration: 0.08s !important; }
}