/* ==========================================================================
   Hypsurf — landing styles
   4 themes: dark · midnight · light · sepia  (auto via prefers-color-scheme)
   Brand gradient: #87c2fd → #dcb9fc (deepened on light/sepia for contrast)
   ========================================================================== */

/* ---------- Layout constants (theme-independent) ---------- */
:root {
  --r-sm: 8px;
  --r:    14px;
  --r-lg: 20px;
  --r-xl: 26px;
  --maxw: 1140px;
  --maxw-wide: 1240px;
  --ease: cubic-bezier(.22,.61,.36,1);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial,
          "Apple Color Emoji", "Segoe UI Emoji", sans-serif;
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", "Menlo", Consolas, monospace;
  --up:   #6ee7b7;
  --down: #fda4af;
  --warn: #fbbf77;
  color-scheme: dark;
}

/* ---------- Theme: dark (default) ---------- */
:root,
[data-theme="dark"] {
  color-scheme: dark;
  --bg:          #07080c;
  --bg-elev:     #0b0d14;
  --surface:     #0f121a;
  --surface-2:   #141826;
  --surface-3:   #1a1f30;
  --border:      rgba(255,255,255,.07);
  --border-2:    rgba(255,255,255,.11);
  --border-3:    rgba(255,255,255,.16);
  --text:        #e7eaf3;
  --text-dim:    #9aa3b8;
  --text-faint:  #5e6781;
  --text-mute:   #434b60;
  --accent-1:    #87c2fd;
  --accent-2:    #dcb9fc;
  --accent-soft: rgba(135,194,253,.14);
  --accent-line: rgba(135,194,253,.30);
  --grad:        linear-gradient(100deg, #87c2fd, #dcb9fc);
  --grad-soft:   linear-gradient(100deg, rgba(135,194,253,.16), rgba(220,185,252,.16));
  --btn-grad:    linear-gradient(100deg, #93c9fe, #e0bffd);
  --btn-text:    #06131f;
  --skel:    rgba(255,255,255,.10);
  --skel-2:  rgba(255,255,255,.06);
  --skel-3:  rgba(255,255,255,.04);
  --skel-4:  rgba(255,255,255,.025);
  --hover:   rgba(255,255,255,.04);
  --hover-2: rgba(255,255,255,.08);
  --grid-line: rgba(255,255,255,.035);
  --glow-a: rgba(135,194,253,.30);
  --glow-b: rgba(220,185,252,.26);
  --hi:      rgba(255,255,255,.05);
  --shadow-1: 0 1px 0 var(--hi) inset, 0 8px 30px rgba(0,0,0,.35);
  --shadow-2: 0 1px 0 var(--hi) inset, 0 24px 70px rgba(0,0,0,.45);
  --glow:     0 0 0 1px var(--accent-line), 0 20px 60px -20px rgba(135,194,253,.30);
  --nav-bg:          linear-gradient(180deg, rgba(7,8,12,.82), rgba(7,8,12,.55));
  --nav-bg-scrolled: rgba(7,8,12,.92);
  --nav-bg-solid:    rgba(7,8,12,.96);
  --win-grad:   linear-gradient(180deg, #0d1119, #0a0d14);
  --bar-grad:   linear-gradient(180deg, #141826, #10131c);
  --app-bg:     #0a0c12;
  --panel-grad: linear-gradient(180deg, #0c0f17, #0a0d14);
  --cmd-bg:     rgba(0,0,0,.35);
  --url-bg:     rgba(0,0,0,.35);
  --input-bg:   rgba(0,0,0,.30);
}

/* ---------- Theme: midnight (soft mid-dark grey) ---------- */
[data-theme="midnight"] {
  color-scheme: dark;
  --bg:          #14161d;
  --bg-elev:     #181b24;
  --surface:     #1c1f29;
  --surface-2:   #232732;
  --surface-3:   #2a2f3b;
  --border:      rgba(255,255,255,.06);
  --border-2:    rgba(255,255,255,.10);
  --border-3:    rgba(255,255,255,.15);
  --text:        #eef0f6;
  --text-dim:    #aab2c4;
  --text-faint:  #6b748b;
  --text-mute:   #4d5468;
  --accent-1:    #9bcfff;
  --accent-2:    #e0c4fd;
  --accent-soft: rgba(135,194,253,.13);
  --accent-line: rgba(135,194,253,.28);
  --grad:        linear-gradient(100deg, #9bcfff, #e0c4fd);
  --grad-soft:   linear-gradient(100deg, rgba(135,194,253,.14), rgba(220,185,252,.14));
  --btn-grad:    linear-gradient(100deg, #a8d6ff, #ecc9fd);
  --btn-text:    #0a1422;
  --skel:    rgba(255,255,255,.09);
  --skel-2:  rgba(255,255,255,.055);
  --skel-3:  rgba(255,255,255,.035);
  --skel-4:  rgba(255,255,255,.02);
  --hover:   rgba(255,255,255,.04);
  --hover-2: rgba(255,255,255,.075);
  --grid-line: rgba(255,255,255,.028);
  --glow-a: rgba(135,194,253,.22);
  --glow-b: rgba(220,185,252,.20);
  --hi:      rgba(255,255,255,.04);
  --shadow-1: 0 1px 0 var(--hi) inset, 0 8px 30px rgba(0,0,0,.30);
  --shadow-2: 0 1px 0 var(--hi) inset, 0 24px 70px rgba(0,0,0,.40);
  --glow:     0 0 0 1px var(--accent-line), 0 20px 60px -20px rgba(135,194,253,.24);
  --nav-bg:          linear-gradient(180deg, rgba(20,22,29,.82), rgba(20,22,29,.55));
  --nav-bg-scrolled: rgba(20,22,29,.92);
  --nav-bg-solid:    rgba(20,22,29,.96);
  --win-grad:   linear-gradient(180deg, #1f2330, #171a22);
  --bar-grad:   linear-gradient(180deg, #262b38, #1c2029);
  --app-bg:     #161922;
  --panel-grad: linear-gradient(180deg, #1b1f2a, #161a22);
  --cmd-bg:     rgba(0,0,0,.30);
  --url-bg:     rgba(0,0,0,.30);
  --input-bg:   rgba(0,0,0,.22);
}

/* ---------- Theme: light ---------- */
[data-theme="light"] {
  color-scheme: light;
  --bg:          #f6f8fb;
  --bg-elev:     #ffffff;
  --surface:     #ffffff;
  --surface-2:   #f2f4f9;
  --surface-3:   #e9edf4;
  --border:      rgba(15,23,42,.09);
  --border-2:    rgba(15,23,42,.13);
  --border-3:    rgba(15,23,42,.18);
  --text:        #0d1526;
  --text-dim:    #475067;
  --text-faint:  #717891;
  --text-mute:   #9aa3b8;
  --accent-1:    #2f7fe0;
  --accent-2:    #8b4fd6;
  --accent-soft: rgba(47,127,224,.10);
  --accent-line: rgba(47,127,224,.30);
  --grad:        linear-gradient(100deg, #2f7fe0, #8b4fd6);
  --grad-soft:   linear-gradient(100deg, rgba(47,127,224,.10), rgba(139,79,214,.10));
  --btn-grad:    linear-gradient(100deg, #4a90f0, #a86df0);
  --btn-text:    #ffffff;
  --skel:    rgba(15,23,42,.10);
  --skel-2:  rgba(15,23,42,.06);
  --skel-3:  rgba(15,23,42,.045);
  --skel-4:  rgba(15,23,42,.025);
  --hover:   rgba(15,23,42,.045);
  --hover-2: rgba(15,23,42,.08);
  --grid-line: rgba(15,23,42,.045);
  --glow-a: rgba(47,127,224,.16);
  --glow-b: rgba(139,79,214,.14);
  --hi:      rgba(255,255,255,.7);
  --shadow-1: 0 1px 0 var(--hi) inset, 0 8px 30px rgba(15,23,42,.10);
  --shadow-2: 0 1px 0 var(--hi) inset, 0 24px 60px rgba(15,23,42,.14);
  --glow:     0 0 0 1px var(--accent-line), 0 20px 60px -24px rgba(47,127,224,.22);
  --nav-bg:          linear-gradient(180deg, rgba(246,248,251,.85), rgba(246,248,251,.6));
  --nav-bg-scrolled: rgba(246,248,251,.92);
  --nav-bg-solid:    rgba(246,248,251,.97);
  --win-grad:   linear-gradient(180deg, #ffffff, #eef1f6);
  --bar-grad:   linear-gradient(180deg, #f1f3f8, #e6eaf1);
  --app-bg:     #ffffff;
  --panel-grad: linear-gradient(180deg, #fbfcfe, #f3f6fa);
  --cmd-bg:     rgba(15,23,42,.04);
  --url-bg:     rgba(15,23,42,.04);
  --input-bg:   rgba(15,23,42,.04);
}

/* ---------- Theme: sepia ---------- */
[data-theme="sepia"] {
  color-scheme: light;
  --bg:          #efe6d2;
  --bg-elev:     #f7f0e0;
  --surface:     #faf3e4;
  --surface-2:   #efe5cf;
  --surface-3:   #e6d9bd;
  --border:      rgba(74,53,31,.14);
  --border-2:    rgba(74,53,31,.20);
  --border-3:    rgba(74,53,31,.28);
  --text:        #3a2c1a;
  --text-dim:    #6b5a44;
  --text-faint:  #8a7a63;
  --text-mute:   #a8997f;
  --accent-1:    #5a8fc0;
  --accent-2:    #a07fc8;
  --accent-soft: rgba(90,143,192,.12);
  --accent-line: rgba(90,143,192,.32);
  --grad:        linear-gradient(100deg, #4a7fb0, #8a5fb0);
  --grad-soft:   linear-gradient(100deg, rgba(74,127,176,.12), rgba(138,95,176,.12));
  --btn-grad:    linear-gradient(100deg, #6d9fd0, #b08fe0);
  --btn-text:    #ffffff;
  --skel:    rgba(74,53,31,.13);
  --skel-2:  rgba(74,53,31,.08);
  --skel-3:  rgba(74,53,31,.05);
  --skel-4:  rgba(74,53,31,.03);
  --hover:   rgba(74,53,31,.05);
  --hover-2: rgba(74,53,31,.09);
  --grid-line: rgba(74,53,31,.05);
  --glow-a: rgba(90,143,192,.16);
  --glow-b: rgba(160,127,200,.14);
  --hi:      rgba(255,255,255,.5);
  --shadow-1: 0 1px 0 var(--hi) inset, 0 8px 30px rgba(74,53,31,.10);
  --shadow-2: 0 1px 0 var(--hi) inset, 0 24px 60px rgba(74,53,31,.16);
  --glow:     0 0 0 1px var(--accent-line), 0 20px 60px -24px rgba(90,143,192,.20);
  --nav-bg:          linear-gradient(180deg, rgba(239,230,210,.85), rgba(239,230,210,.6));
  --nav-bg-scrolled: rgba(239,230,210,.92);
  --nav-bg-solid:    rgba(239,230,210,.97);
  --win-grad:   linear-gradient(180deg, #fbf6ec, #ece2cc);
  --bar-grad:   linear-gradient(180deg, #efe5cf, #e2d5b8);
  --app-bg:     #fbf6ec;
  --panel-grad: linear-gradient(180deg, #faf3e4, #efe5cf);
  --cmd-bg:     rgba(74,53,31,.05);
  --url-bg:     rgba(74,53,31,.05);
  --input-bg:   rgba(74,53,31,.05);
}

/* ---------- Accent palettes (override brand gradient, independent of bg theme) ----------
   Applied via [data-accent] on <html>. Default (no attr / blue-lavender) = per-theme values above. */

/* blood-orange — dark backgrounds */
[data-accent="blood-orange"] {
  --accent-1: #f97316;
  --accent-2: #ef4444;
  --grad:      linear-gradient(90deg, #ef4444, #f97316 45%, #facc15);
  --grad-soft: linear-gradient(100deg, rgba(239,68,68,.16), rgba(249,115,22,.16));
  --btn-grad:  linear-gradient(90deg, #f97316, #ef4444);
  --accent-soft: rgba(249,115,22,.14);
  --accent-line: rgba(249,115,22,.30);
  --glow-a: rgba(249,115,22,.30);
  --glow-b: rgba(239,68,68,.26);
}
/* blood-orange — light backgrounds (deeper for contrast) */
[data-theme="light"][data-accent="blood-orange"],
[data-theme="sepia"][data-accent="blood-orange"] {
  --accent-1: #ea580c;
  --accent-2: #dc2626;
  --grad:      linear-gradient(90deg, #dc2626, #ea580c 45%, #d97706);
  --grad-soft: linear-gradient(100deg, rgba(220,38,38,.12), rgba(234,88,12,.12));
  --btn-grad:  linear-gradient(90deg, #ea580c, #dc2626);
  --accent-soft: rgba(234,88,12,.10);
  --accent-line: rgba(234,88,12,.32);
  --glow-a: rgba(234,88,12,.16);
  --glow-b: rgba(220,38,38,.14);
}

/* ocean — dark backgrounds */
[data-accent="ocean"] {
  --accent-1: #0ea5e9;
  --accent-2: #14b8a6;
  --grad:      linear-gradient(90deg, #0ea5e9, #14b8a6 48%, #a7f3d0);
  --grad-soft: linear-gradient(100deg, rgba(14,165,233,.16), rgba(20,184,166,.16));
  --btn-grad:  linear-gradient(90deg, #0ea5e9, #14b8a6);
  --accent-soft: rgba(14,165,233,.14);
  --accent-line: rgba(14,165,233,.30);
  --glow-a: rgba(14,165,233,.30);
  --glow-b: rgba(20,184,166,.26);
}
/* ocean — light backgrounds (deeper for contrast) */
[data-theme="light"][data-accent="ocean"],
[data-theme="sepia"][data-accent="ocean"] {
  --accent-1: #0284c7;
  --accent-2: #0d9488;
  --grad:      linear-gradient(90deg, #0284c7, #0d9488 48%, #5eead4);
  --grad-soft: linear-gradient(100deg, rgba(2,132,199,.12), rgba(13,148,136,.12));
  --btn-grad:  linear-gradient(90deg, #0284c7, #0d9488);
  --accent-soft: rgba(2,132,199,.10);
  --accent-line: rgba(2,132,199,.32);
  --glow-a: rgba(2,132,199,.16);
  --glow-b: rgba(13,148,136,.14);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
}
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  position: relative;
}
/* color/bg switch instantly — avoids Safari repaint tearing across long pages */
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
ul, ol { list-style: none; padding: 0; }
input { font: inherit; }
::selection { background: var(--accent-soft); color: var(--text); }

:focus-visible {
  outline: 2px solid var(--accent-1);
  outline-offset: 2px;
  border-radius: 4px;
}

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}
.skip {
  position: absolute; left: 16px; top: -60px; z-index: 200;
  background: var(--accent-1); color: var(--btn-text); padding: 10px 16px;
  border-radius: 0 0 var(--r-sm) var(--r-sm); font-weight: 600; transition: top .2s var(--ease);
}
.skip:focus { top: 0; }

/* ---------- Backgrounds ---------- */
.bg { position: fixed; inset: 0; z-index: -1; pointer-events: none; overflow: hidden; }
.bg-grid {
  position: absolute; inset: -2px;
  background-image:
    linear-gradient(to right, var(--grid-line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--grid-line) 1px, transparent 1px);
  background-size: 54px 54px;
  -webkit-mask-image: radial-gradient(120% 80% at 50% 0%, #000 0%, transparent 75%);
          mask-image: radial-gradient(120% 80% at 50% 0%, #000 0%, transparent 75%);
}
.bg-glow {
  position: absolute; border-radius: 50%; filter: blur(90px); opacity: .6;
  animation: drift 18s var(--ease) infinite alternate;
}
.bg-glow--a {
  width: 620px; height: 620px; top: -220px; left: -120px;
  background: radial-gradient(circle, var(--glow-a), transparent 65%);
}
.bg-glow--b {
  width: 560px; height: 560px; top: 120px; right: -160px;
  background: radial-gradient(circle, var(--glow-b), transparent 65%);
  animation-delay: -6s;
}
@keyframes drift {
  from { transform: translate3d(0,0,0) scale(1); }
  to   { transform: translate3d(20px, 30px, 0) scale(1.08); }
}

/* ---------- Layout ---------- */
.wrap {
  width: 100%; max-width: var(--maxw); margin-inline: auto;
  padding-inline: 22px;
}
.wrap--wide { max-width: var(--maxw-wide); }
.section { padding: clamp(72px, 11vw, 132px) 0; position: relative; }
.section--alt::before {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(180deg, transparent, var(--skel-4), transparent);
  border-block: 1px solid var(--border);
}

.section__head { max-width: 720px; margin: 0 auto clamp(40px,5vw,64px); text-align: center; }
.kicker {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 12.5px; letter-spacing: .14em; text-transform: uppercase;
  color: var(--accent-1); font-weight: 600; margin-bottom: 16px;
}
.kicker::before {
  content: ""; width: 18px; height: 1px; background: var(--accent-line);
}
.section__head h2 {
  font-size: clamp(28px, 4vw, 44px); line-height: 1.08; letter-spacing: -.025em;
  font-weight: 620; color: var(--text);
}
.section__lede {
  margin-top: 18px; color: var(--text-dim); font-size: clamp(15.5px, 1.6vw, 18px);
  max-width: 60ch; margin-inline: auto;
}

/* ---------- Gradient text ---------- */
.grad {
  background: var(--grad);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}

/* ---------- Buttons ---------- */
.btn {
  --pad-y: 13px; --pad-x: 20px;
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  padding: var(--pad-y) var(--pad-x);
  border-radius: 999px; font-weight: 600; font-size: 14.5px; letter-spacing: -.005em;
  border: 1px solid transparent; white-space: nowrap;
  transition: transform .18s var(--ease),
              border-color .2s var(--ease), box-shadow .2s var(--ease), color .2s var(--ease);
  will-change: transform;
}
.btn--sm { --pad-y: 9px; --pad-x: 15px; font-size: 13.5px; }
.btn svg { transition: transform .2s var(--ease); }

.btn--primary {
  color: var(--btn-text);
  background: var(--btn-grad);
  box-shadow: 0 8px 24px -10px var(--glow-a), inset 0 1px 0 rgba(255,255,255,.4);
}
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 14px 36px -12px var(--glow-a), inset 0 1px 0 rgba(255,255,255,.5); }
.btn--primary:hover svg { transform: translateX(3px); }
.btn--primary:active { transform: translateY(0); }

.btn--ghost {
  color: var(--text); background: var(--skel-3);
  border-color: var(--border-2); backdrop-filter: blur(6px);
}
.btn--ghost:hover { background: var(--hover-2); border-color: var(--border-3); transform: translateY(-2px); }

/* ---------- Nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 100;
  backdrop-filter: blur(14px) saturate(140%);
  background: var(--nav-bg);
  border-bottom: 1px solid transparent;
  transition: border-color .3s var(--ease);
}
.nav.is-scrolled { border-bottom-color: var(--border); background: var(--nav-bg-scrolled); }
.nav__inner {
  display: flex; align-items: center; gap: 18px;
  height: 64px;
}
.brand { display: inline-flex; align-items: center; gap: 9px; font-weight: 640; letter-spacing: -.01em; }
.brand__mark { display: grid; place-items: center; width: 30px; height: 30px; border-radius: 9px;
  background: var(--surface-2); border: 1px solid var(--border-2); }
.brand__mark svg, .brand__mark img { width: 18px; height: 18px; border-radius: 5px; }
.brand__name {
  font-size: 17px;
  background: var(--grad); -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}
.nav__links { display: flex; gap: 4px; margin-left: 8px; }
.nav__links a {
  padding: 8px 12px; border-radius: 8px; font-size: 14px; color: var(--text-dim);
  transition: color .18s var(--ease), background .18s var(--ease);
}
.nav__links a:hover { color: var(--text); background: var(--hover); }
.nav__cta { display: flex; align-items: center; gap: 8px; margin-left: auto; }

/* theme switcher */
.theme-switch { display: inline-flex; align-items: center; gap: 4px; padding: 4px; border-radius: 999px; background: var(--skel-3); border: 1px solid var(--border-2); }
.theme-switch__btn {
  width: 22px; height: 22px; border-radius: 50%; border: 1px solid var(--border-3);
  position: relative; transition: transform .18s var(--ease), box-shadow .18s var(--ease);
}
.theme-switch__btn:hover { transform: scale(1.12); }
.theme-switch__btn[aria-pressed="true"] { box-shadow: 0 0 0 2px var(--bg), 0 0 0 4px var(--accent-1); }
.theme-switch__btn[data-set="dark"]     { background: linear-gradient(135deg, #0b0d14, #1a1f30); }
.theme-switch__btn[data-set="midnight"] { background: linear-gradient(135deg, #1c1f29, #2a2f3b); }
.theme-switch__btn[data-set="light"]    { background: linear-gradient(135deg, #ffffff, #e6eaf1); }
.theme-switch__btn[data-set="sepia"]    { background: linear-gradient(135deg, #faf3e4, #e6d9bd); }
.theme-switch__btn svg { position: absolute; inset: 0; margin: auto; width: 12px; height: 12px; opacity: 0; transition: opacity .15s var(--ease); }
.theme-switch__btn[aria-pressed="true"] svg { opacity: 1; }

/* accent switcher — pale gradient swatches, change brand gradient */
.accent-switch { display: inline-flex; align-items: center; gap: 4px; padding: 4px; border-radius: 999px; background: var(--skel-3); border: 1px solid var(--border-2); }
.accent-switch__btn {
  width: 22px; height: 22px; border-radius: 50%; border: 1px solid var(--border-3);
  position: relative; transition: transform .18s var(--ease), box-shadow .18s var(--ease);
}
.accent-switch__btn:hover { transform: scale(1.12); }
.accent-switch__btn[aria-pressed="true"] { box-shadow: 0 0 0 2px var(--bg), 0 0 0 4px var(--accent-1); }
.accent-switch__btn[data-accent-set="blue-lavender"] { background: linear-gradient(135deg, #cfe6ff, #f0e4ff); }
.accent-switch__btn[data-accent-set="blood-orange"]  { background: linear-gradient(135deg, #fecaca, #fed7aa); }
.accent-switch__btn[data-accent-set="ocean"]         { background: linear-gradient(135deg, #bae6fd, #99f6e4); }

.nav__burger {
  display: none; width: 40px; height: 40px; border-radius: 9px;
  border: 1px solid var(--border-2); background: var(--skel-3);
  flex-direction: column; align-items: center; justify-content: center; gap: 4px; margin-left: auto;
}
.nav__burger span { width: 17px; height: 2px; background: var(--text); border-radius: 2px; transition: transform .25s var(--ease), opacity .2s var(--ease); }
.nav__burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav__burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav__burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
.nav__mobile {
  display: none; flex-direction: column; gap: 4px; padding: 12px 22px 18px;
  border-bottom: 1px solid var(--border); background: var(--nav-bg-solid);
  animation: fadeIn .25s var(--ease);
}
.nav__mobile a { padding: 12px 12px; border-radius: 9px; color: var(--text-dim); }
.nav__mobile a:hover { background: var(--hover); color: var(--text); }
.nav__mobile .btn { margin-top: 8px; }
.nav__mobile .theme-switch { align-self: flex-start; margin-top: 12px; }
.nav__mobile .accent-switch { align-self: flex-start; margin-top: 8px; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(-6px);} to { opacity: 1; transform: none; } }

/* ---------- Hero ---------- */
.hero { padding-top: clamp(56px, 8vw, 92px); position: relative; }
.hero__inner { text-align: center; max-width: 820px; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 9px;
  font-size: 13px; color: var(--text-dim); font-weight: 500;
  padding: 7px 14px; border: 1px solid var(--border-2); border-radius: 999px;
  background: var(--skel-4); margin-bottom: 28px;
}
.eyebrow .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent-1); box-shadow: 0 0 10px var(--accent-1); }
.hero__title {
  font-size: clamp(36px, 6.2vw, 68px); line-height: 1.04; letter-spacing: -.035em;
  font-weight: 660; color: var(--text);
}
.hero__title .grad { display: inline; }
.hero__sub {
  margin: 26px auto 0; max-width: 62ch;
  font-size: clamp(16.5px, 1.9vw, 20px); color: var(--text-dim); line-height: 1.6;
}
.hero__cta { margin-top: 34px; display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.hero__note {
  margin-top: 26px; font-size: 13px; color: var(--text-faint);
  display: inline-flex; gap: 10px; flex-wrap: wrap; justify-content: center;
}

/* shared dot */
.dot { width: 7px; height: 7px; border-radius: 50%; background: var(--text-faint); display: inline-block; }
.dot--live { background: var(--accent-1); box-shadow: 0 0 0 0 var(--accent-line); animation: pulse 2.4s var(--ease) infinite; }
@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 var(--accent-line); }
  70%  { box-shadow: 0 0 0 7px transparent; }
  100% { box-shadow: 0 0 0 0 transparent; }
}

/* ============================================================
   BROWSER MOCKUP
   ============================================================ */
.mockup {
  margin: clamp(48px, 7vw, 80px) auto 0;
  border-radius: var(--r-xl);
  background: var(--win-grad);
  border: 1px solid var(--border-2);
  box-shadow: var(--shadow-2), 0 0 0 1px var(--skel-4);
  overflow: hidden;
  position: relative;
}
.mockup::after {
  content: ""; position: absolute; inset: 0; border-radius: inherit; pointer-events: none;
  background: radial-gradient(120% 60% at 80% -10%, var(--glow-b), transparent 60%);
  opacity: .6;
}
.mockup__bar {
  display: flex; align-items: center; gap: 14px;
  height: 42px; padding: 0 14px;
  background: var(--bar-grad);
  border-bottom: 1px solid var(--border);
  position: relative; z-index: 2;
}
.mockup__lights { display: inline-flex; gap: 7px; }
.mockup__lights i { width: 11px; height: 11px; border-radius: 50%; background: #2b3142; }
.mockup__lights i:nth-child(1) { background: #ff5f57; }
.mockup__lights i:nth-child(2) { background: #febc2e; }
.mockup__lights i:nth-child(3) { background: #28c840; }
.mockup__url {
  display: inline-flex; align-items: center; gap: 8px; flex: 1;
  height: 26px; padding: 0 12px; border-radius: 8px;
  background: var(--url-bg); border: 1px solid var(--border);
  color: var(--text-faint); font-size: 12.5px; font-family: var(--mono);
  max-width: 460px;
}
.mockup__url svg { color: var(--text-mute); }
.mockup__tools { display: inline-flex; align-items: center; gap: 10px; }
.mockup__ext {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 12px; font-weight: 600; color: var(--accent-1);
  padding: 5px 10px; border-radius: 7px;
  background: var(--accent-soft); border: 1px solid var(--accent-line);
}

.mockup__body {
  display: grid; grid-template-columns: 1fr 360px;
  min-height: 440px; position: relative; z-index: 1;
}

/* --- fake app --- */
.app { display: grid; grid-template-columns: 56px 1fr; min-width: 0; background: var(--app-bg); }
.app__side {
  border-right: 1px solid var(--border);
  display: flex; flex-direction: column; align-items: center; gap: 14px; padding: 14px 0;
}
.app__logo { width: 26px; height: 26px; border-radius: 7px; background: var(--grad); opacity: .9; }
.app__nav { display: flex; flex-direction: column; gap: 8px; align-items: center; }
.app__navitem { width: 26px; height: 26px; border-radius: 7px; background: var(--skel-3); border: 1px solid var(--border); }
.app__navitem.is-active { background: var(--accent-soft); border-color: var(--accent-line); box-shadow: inset 0 0 0 1px var(--accent-line); }

.app__main { padding: 20px 22px; min-width: 0; display: flex; flex-direction: column; gap: 16px; }
.app__head { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.app__title { width: 180px; height: 16px; border-radius: 5px; background: var(--skel); }
.app__pills { display: flex; gap: 8px; }
.app__pills span { width: 54px; height: 22px; border-radius: 7px; background: var(--skel-3); border: 1px solid var(--border); }
.app__kpis { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.kpi {
  padding: 12px 13px; border-radius: 10px; background: var(--surface);
  border: 1px solid var(--border);
}
.kpi__val { width: 70%; height: 13px; border-radius: 4px; background: var(--skel); margin-bottom: 8px; }
.kpi__val--short { width: 45%; }
.kpi__lbl { width: 50%; height: 8px; border-radius: 4px; background: var(--skel-2); }
.app__chart {
  height: 96px; border-radius: 12px; background: var(--surface);
  border: 1px solid var(--border); padding: 8px 10px; overflow: hidden;
}
.app__chart svg { opacity: .95; }
.app__chart .cl { stroke: var(--accent-1); }
.app__chart .cf { stop-color: var(--accent-1); }
.app__table { display: flex; flex-direction: column; gap: 0; border-radius: 10px; overflow: hidden; border: 1px solid var(--border); }
.app__table .row {
  display: grid; grid-template-columns: 1.6fr 1fr 1fr .7fr; gap: 10px; align-items: center;
  padding: 9px 12px; background: var(--surface);
}
.app__table .row + .row { border-top: 1px solid var(--border); }
.app__table .row--head { background: var(--skel-4); padding: 7px 12px; }
.app__table .row span { height: 9px; border-radius: 4px; background: var(--skel); }
.app__table .row .m { background: var(--skel-2); }
.app__table .row .s { background: var(--skel-4); width: 70%; }

/* --- Hypsurf side panel --- */
.panel {
  border-left: 1px solid var(--border);
  background: var(--panel-grad);
  display: flex; flex-direction: column; min-width: 0;
  position: relative;
}
.panel::before {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 1px;
  background: linear-gradient(180deg, transparent, var(--accent-line) 30%, var(--accent-line) 70%, transparent);
  opacity: .6;
}
.panel__head {
  display: flex; align-items: center; gap: 9px; padding: 12px 14px;
  border-bottom: 1px solid var(--border);
}
.panel__logo { display: grid; place-items: center; }
.panel__title { font-weight: 640; letter-spacing: -.01em; font-size: 14.5px;
  background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.panel__status {
  margin-left: auto; display: inline-flex; align-items: center; gap: 6px;
  font-size: 11.5px; color: var(--text-faint); font-family: var(--mono);
}

.panel__cmd {
  display: flex; align-items: center; gap: 8px; margin: 12px 14px 0;
  padding: 9px 11px; border-radius: 9px;
  background: var(--cmd-bg); border: 1px solid var(--border-2);
  color: var(--text-dim);
}
.panel__cmd svg { color: var(--accent-1); }
.panel__cmdline { font-family: var(--mono); font-size: 12.5px; color: var(--text); }
.caret {
  width: 2px; height: 14px; background: var(--accent-1); border-radius: 1px;
  animation: blink 1.1s steps(1) infinite; margin-left: 1px;
}
@keyframes blink { 50% { opacity: 0; } }

.panel__thread { padding: 14px; display: flex; flex-direction: column; gap: 14px; overflow: hidden; }
.msg__role {
  font-size: 10.5px; letter-spacing: .08em; text-transform: uppercase;
  color: var(--text-faint); font-weight: 600; margin-bottom: 5px;
}
.msg--out .msg__role { color: var(--accent-2); }
.msg--in .msg__role { color: var(--accent-1); }
.msg--hint .msg__role { color: var(--text-mute); }
.msg__text { font-size: 13px; line-height: 1.55; color: var(--text-dim); }
.msg--out .msg__text {
  display: inline-block; font-family: var(--mono); font-size: 12.5px;
  background: var(--skel-3); border: 1px solid var(--border);
  padding: 5px 9px; border-radius: 7px; color: var(--text);
}
.msg__text em { color: var(--accent-2); font-style: normal; }

.msg__table {
  display: flex; flex-direction: column; gap: 1px;
  border-radius: 8px; overflow: hidden; border: 1px solid var(--border); margin-top: 2px;
}
.mt { display: grid; grid-template-columns: 1fr .9fr .7fr; gap: 8px; padding: 6px 9px; font-size: 12px; font-family: var(--mono); background: var(--skel-4); }
.mt:first-child { color: var(--text-faint); font-size: 10.5px; letter-spacing: .04em; text-transform: uppercase; background: var(--skel-3); }
.mt .up { color: var(--up); } .mt .down { color: var(--down); }
.msg__chips { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 8px; }
.msg__chips span, .msg__chips--static span {
  font-size: 11px; font-family: var(--mono); color: var(--text-dim);
  padding: 3px 8px; border-radius: 6px; background: var(--skel-3); border: 1px solid var(--border);
}
.msg__chips--static span { color: var(--text-faint); }

.msg__draft {
  border-radius: 9px; border: 1px solid var(--accent-line);
  background: var(--grad-soft);
  padding: 8px 10px; margin-top: 4px;
}
.pv-row { display: grid; grid-template-columns: 50px 1fr; gap: 8px; align-items: center; padding: 4px 0; font-size: 12px; }
.pv-row + .pv-row { border-top: 1px dashed var(--border-2); }
.pv-row span { color: var(--text-faint); font-size: 10.5px; text-transform: uppercase; letter-spacing: .06em; }
.pv-row b { color: var(--text); font-weight: 600; font-family: var(--mono); font-size: 12px; }
.pv-row b.warn { color: var(--warn); }
.msg__actions { display: flex; gap: 6px; margin-top: 9px; flex-wrap: wrap; }
.mini {
  font-size: 11.5px; font-weight: 600; padding: 5px 10px; border-radius: 7px;
  background: var(--skel-3); border: 1px solid var(--border-2); color: var(--text-dim);
  transition: background .18s var(--ease), color .18s var(--ease), transform .18s var(--ease);
}
.mini:hover { background: var(--hover-2); color: var(--text); transform: translateY(-1px); }
.mini--primary {
  background: var(--btn-grad); color: var(--btn-text); border-color: transparent;
  box-shadow: 0 4px 14px -6px var(--glow-a);
}
.mini--primary:hover { color: var(--btn-text); transform: translateY(-1px); }

/* mockup buttons are decorative — no hover/click response */
.mockup .mini, .mockup .mini--primary { pointer-events: none; cursor: default; transition: none; }
.mockup .mini:hover { transform: none; background: var(--skel-3); color: var(--text-dim); }
.mockup .mini--primary:hover { color: var(--btn-text); transform: none; }
.mockup .msg__chips span { transition: none; cursor: default; }

/* ---------- Grids / Cards ---------- */
.grid { display: grid; gap: 16px; }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--2 { grid-template-columns: repeat(2, 1fr); }

.card {
  position: relative; padding: 24px; border-radius: var(--r);
  background: linear-gradient(180deg, var(--surface), var(--bg-elev));
  border: 1px solid var(--border);
  transition: transform .25s var(--ease), border-color .25s var(--ease), box-shadow .25s var(--ease);
  overflow: hidden;
}
.card::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit; pointer-events: none;
  background: radial-gradient(120% 80% at 50% -20%, var(--glow-a), transparent 60%);
  opacity: 0; transition: opacity .3s var(--ease);
}
.card:hover { transform: translateY(-4px); border-color: var(--border-3); box-shadow: var(--shadow-2); }
.card:hover::before { opacity: .5; }
.card__icon {
  width: 40px; height: 40px; border-radius: 10px; display: grid; place-items: center;
  background: var(--accent-soft); border: 1px solid var(--accent-line); color: var(--accent-1);
  margin-bottom: 16px;
}
.card h3 { font-size: 17px; font-weight: 600; letter-spacing: -.015em; color: var(--text); margin-bottom: 7px; }
.card p { color: var(--text-dim); font-size: 14.5px; }
.card--cap h3 { font-size: 16.5px; }

/* feature (numbered) */
.feature {
  position: relative; padding: 26px 26px 26px 28px; border-radius: var(--r);
  background: linear-gradient(180deg, var(--surface), var(--bg-elev));
  border: 1px solid var(--border); overflow: hidden;
  transition: border-color .25s var(--ease), transform .25s var(--ease);
}
.feature::before {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 2px;
  background: var(--grad); opacity: .5; transition: opacity .3s var(--ease);
}
.feature:hover { transform: translateY(-3px); border-color: var(--border-3); }
.feature:hover::before { opacity: 1; }
.feature__num {
  font-family: var(--mono); font-size: 12px; color: var(--accent-1); font-weight: 600;
  letter-spacing: .05em; margin-bottom: 12px;
}
.feature h3 { font-size: 19px; font-weight: 600; letter-spacing: -.02em; color: var(--text); margin-bottom: 8px; }
.feature p { color: var(--text-dim); font-size: 15px; }

/* ---------- Workflow steps ---------- */
.steps {
  display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px;
  counter-reset: step;
}
.step {
  position: relative; padding: 22px 20px 22px; border-radius: var(--r);
  background: linear-gradient(180deg, var(--surface), var(--bg-elev));
  border: 1px solid var(--border);
  transition: transform .25s var(--ease), border-color .25s var(--ease);
}
.step:hover { transform: translateY(-3px); border-color: var(--border-3); }
.step__top { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.step__num {
  width: 30px; height: 30px; flex: none; border-radius: 9px; display: grid; place-items: center;
  font-weight: 700; font-size: 14px; color: var(--btn-text);
  background: var(--btn-grad); box-shadow: 0 6px 16px -8px var(--glow-a);
}
.step__line { flex: 1; height: 1px; background: linear-gradient(90deg, var(--accent-line), transparent); }
.step:last-child .step__line { display: none; }
.step h3 { font-size: 16px; font-weight: 600; color: var(--text); margin-bottom: 6px; letter-spacing: -.015em; }
.step p { font-size: 13.5px; color: var(--text-dim); }

/* ---------- Trust ---------- */
.trust {
  display: grid; grid-template-columns: .85fr 1fr; gap: clamp(30px, 5vw, 70px); align-items: center;
  background: linear-gradient(180deg, var(--surface), var(--bg-elev));
  border: 1px solid var(--border-2); border-radius: var(--r-lg);
  padding: clamp(28px, 4vw, 48px); position: relative; overflow: hidden;
}
.trust::before {
  content: ""; position: absolute; top: -40%; right: -10%; width: 60%; height: 140%;
  background: radial-gradient(circle, var(--glow-a), transparent 60%); pointer-events: none; opacity: .5;
}
.trust__intro h2 { font-size: clamp(26px, 3.4vw, 38px); letter-spacing: -.025em; font-weight: 620; color: var(--text); }
.trust__list { display: grid; gap: 14px; position: relative; }
.trust__list li { display: flex; gap: 13px; align-items: flex-start; }
.check {
  flex: none; width: 22px; height: 22px; border-radius: 7px; display: grid; place-items: center;
  background: var(--accent-soft); border: 1px solid var(--accent-line); color: var(--accent-1); margin-top: 1px;
}
.trust__list b { color: var(--text); font-weight: 600; }
.trust__list li div { color: var(--text-dim); font-size: 14.5px; }

/* ---------- Use cases ---------- */
.uc {
  padding: 22px; border-radius: var(--r); background: var(--surface);
  border: 1px solid var(--border); position: relative; overflow: hidden;
  transition: transform .25s var(--ease), border-color .25s var(--ease);
}
.uc::after {
  content: ""; position: absolute; right: -30px; bottom: -30px; width: 90px; height: 90px;
  background: radial-gradient(circle, var(--glow-b), transparent 70%); opacity: 0; transition: opacity .3s var(--ease);
}
.uc:hover { transform: translateY(-3px); border-color: var(--border-3); background: var(--surface-2); }
.uc:hover::after { opacity: .6; }
.uc h3 { font-size: 16.5px; font-weight: 600; color: var(--text); margin-bottom: 7px; letter-spacing: -.015em; }
.uc p { color: var(--text-dim); font-size: 14px; }

/* ---------- Final CTA ---------- */
.cta { padding-block: clamp(60px, 9vw, 110px); }
.cta__card {
  position: relative; text-align: center; max-width: 720px; margin-inline: auto;
  padding: clamp(36px, 5vw, 60px) clamp(24px, 4vw, 48px);
  border-radius: var(--r-xl); overflow: hidden;
  background: linear-gradient(180deg, var(--surface), var(--bg-elev));
  border: 1px solid var(--border-2);
  box-shadow: var(--shadow-2);
}
.cta__glow {
  position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(60% 50% at 50% 0%, var(--glow-a), transparent 70%),
    radial-gradient(50% 40% at 70% 100%, var(--glow-b), transparent 70%);
  opacity: .7;
}
.cta__card .kicker { position: relative; }
.cta__title { font-size: clamp(30px, 4.4vw, 48px); font-weight: 640; letter-spacing: -.03em; color: var(--text); position: relative; }
.cta__lede { margin: 16px auto 0; max-width: 52ch; color: var(--text-dim); font-size: clamp(15px, 1.7vw, 17.5px); position: relative; }
.cta__actions { margin-top: 21px; display: flex; justify-content: center; position: relative; }
.cta__fine { margin-top: 18px; font-size: 12.5px; color: var(--text-faint); position: relative; }
.cta__fine a { color: var(--accent-1); }
.cta__fine a:hover { text-decoration: underline; }

/* ---------- Footer ---------- */
.footer { border-top: 1px solid var(--border); padding: 40px 0 48px; background: var(--bg-elev); }
.footer__inner { display: flex; align-items: center; gap: 24px; flex-wrap: wrap; }
.footer__brand { display: flex; flex-direction: column; gap: 6px; }
.footer__tag { font-size: 13px; color: var(--text-faint); }
.footer__links { display: flex; gap: 6px; margin-left: auto; flex-wrap: wrap; }
.footer__links a { padding: 8px 12px; border-radius: 8px; font-size: 13.5px; color: var(--text-dim); transition: color .18s var(--ease), background .18s var(--ease); }
.footer__links a:hover { color: var(--text); background: var(--hover); }
.footer__legal { width: 100%; margin-top: 10px; padding-top: 18px; border-top: 1px solid var(--border); font-size: 12px; color: var(--text-mute); }

/* ---------- Reveal animation ---------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.is-in { opacity: 1; transform: none; }
.reveal:nth-child(2) { transition-delay: .06s; }
.reveal:nth-child(3) { transition-delay: .12s; }
.reveal:nth-child(4) { transition-delay: .18s; }
.reveal:nth-child(5) { transition-delay: .24s; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; } }

/* ---------- Legal / privacy page ---------- */
.legal { padding: clamp(48px, 7vw, 84px) 0 80px; }
.legal__inner { max-width: 760px; margin-inline: auto; }
.legal__back { display: inline-flex; align-items: center; gap: 7px; font-size: 13.5px; color: var(--text-dim); margin-bottom: 28px; }
.legal__back:hover { color: var(--text); }
.legal h1 { font-size: clamp(30px, 4.5vw, 44px); letter-spacing: -.03em; font-weight: 650; color: var(--text); }
.legal .meta { color: var(--text-faint); font-size: 13.5px; margin-top: 10px; font-family: var(--mono); }
.legal h2 { font-size: 20px; font-weight: 600; letter-spacing: -.02em; color: var(--text); margin: 36px 0 10px; }
.legal p, .legal li { color: var(--text-dim); font-size: 15px; line-height: 1.7; }
.legal ul { list-style: disc; padding-left: 22px; display: grid; gap: 6px; margin: 8px 0; }
.legal p + p { margin-top: 10px; }
.legal .callout {
  margin-top: 28px; padding: 16px 18px; border-radius: var(--r);
  background: var(--accent-soft); border: 1px solid var(--accent-line); color: var(--text);
  font-size: 14.5px;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .mockup__body { grid-template-columns: 1fr 320px; }
  .steps { grid-template-columns: repeat(3, 1fr); }
  .step__line { display: none; }
  .nav__links { display: none; }
}

@media (max-width: 860px) {
  .nav__cta > .btn { display: none; }
  .nav__burger { display: flex; }
  .nav__mobile { display: flex; }
  .nav__mobile[hidden] { display: none; }
  .nav__cta .theme-switch { display: inline-flex; }

  .grid--3 { grid-template-columns: repeat(2, 1fr); }
  .grid--2 { grid-template-columns: 1fr; }
  .trust { grid-template-columns: 1fr; }

  .mockup__body { grid-template-columns: 1fr; }
  .panel { border-left: 0; border-top: 1px solid var(--border); }
  .panel::before { display: none; }
}

@media (max-width: 620px) {
  .grid--3 { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .hero__cta { flex-direction: column; align-items: stretch; }
  .hero__cta .btn { width: 100%; }
  .footer__inner { flex-direction: column; align-items: flex-start; }
  .footer__links { margin-left: 0; }
  .nav__cta .theme-switch { display: none; }
}

/* compact app hint for mobile (keeps mockup meaningful) */
@media (max-width: 860px) {
  .mockup__body { min-height: auto; }
  .app__main { padding: 16px; }
  .app__kpis { gap: 8px; }
  .app__table, .app__chart { display: none; }
}