/* ============================================================
   SpeakSync Website — Main Stylesheet
   speaksync.app
   ============================================================ */

:root {
  --color-bg:           #08080F;
  --color-surface:      #12121E;
  --color-surface-2:    #1C1C2E;
  --color-surface-3:    #252540;
  --color-accent:       #0A84FF;
  --color-accent-dim:   rgba(10, 132, 255, 0.15);
  --color-accent-glow:  rgba(10, 132, 255, 0.35);
  --color-text:         #F2F2F7;
  --color-text-sec:     #AEAEB2;
  --color-text-ter:     #636366;
  --color-border:       rgba(255, 255, 255, 0.08);
  --color-border-light: rgba(255, 255, 255, 0.14);
  --font:        -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', system-ui, sans-serif;
  --font-mono:   'SF Mono', 'Fira Code', monospace;
  --radius-sm:  8px;
  --radius-md:  14px;
  --radius-lg:  20px;
  --radius-xl:  28px;
  --nav-h:       64px;
  --beta-h:      0px;
  --max-w:       1140px;
  --ease:        cubic-bezier(0.4, 0, 0.2, 1);
}
/* Only add banner offset on pages that actually have the banner */
:root:has(.beta-banner) { --beta-h: 42px; }

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; }
a { color: var(--color-accent); text-decoration: none; }
a:hover { text-decoration: underline; }
button { cursor: pointer; font-family: var(--font); }
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--color-bg); }
::-webkit-scrollbar-thumb { background: var(--color-surface-3); border-radius: 3px; }

/* ── Navigation ────────────────────────────────────────────── */
.nav {
  position: fixed; top: 0; left: 0; right: 0;
  height: calc(var(--nav-h) + env(safe-area-inset-top, 0px));
  padding: env(safe-area-inset-top, 0px) 32px 0;
  display: flex; align-items: center; justify-content: space-between;
  z-index: 100;
  background: rgba(8, 8, 15, 0.6); /* Always tappable on iOS — transparent navs swallow taps */
  -webkit-backdrop-filter: blur(12px) saturate(1.4);
  backdrop-filter: blur(12px) saturate(1.4);
  transition: background 0.3s var(--ease), border-color 0.3s var(--ease), backdrop-filter 0.3s;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(8, 8, 15, 0.88);
  backdrop-filter: blur(24px) saturate(1.8);
  -webkit-backdrop-filter: blur(24px) saturate(1.8);
  border-color: var(--color-border);
}
/* ── Beta Banner ───────────────────────────────────────────── */
.beta-banner {
  position: fixed; top: var(--nav-h); left: 0; right: 0;
  z-index: 99;
  display: flex; align-items: center; justify-content: center; gap: 16px; flex-wrap: wrap;
  padding: 10px 24px;
  background: rgba(18, 18, 24, 0.92);
  backdrop-filter: blur(16px) saturate(1.6);
  -webkit-backdrop-filter: blur(16px) saturate(1.6);
  border-bottom: 1px solid rgba(255, 59, 48, 0.25);
  font-size: 0.9rem;
  color: var(--color-text-sec);
}
.beta-banner strong { color: var(--color-text); }
.beta-banner-btn {
  display: inline-flex; align-items: center;
  background: #ff3b30;
  color: #fff;
  font-size: 0.82rem; font-weight: 700;
  letter-spacing: 0.01em;
  padding: 6px 18px;
  border-radius: 999px;
  text-decoration: none;
  white-space: nowrap;
  transition: background 0.18s, transform 0.14s;
  box-shadow: 0 0 14px rgba(255, 59, 48, 0.45);
}
.beta-banner-btn:hover { background: #ff6259; transform: translateY(-1px); text-decoration: none; }

.nav-logo {
  display: flex; align-items: center; gap: 8px;
  font-size: 1.15rem; letter-spacing: -0.02em;
  color: var(--color-text); text-decoration: none;
}
.nav-logo:hover { text-decoration: none; }
.nav-logo-icon { color: var(--color-accent); display: flex; align-items: center; }
.nav-logo-img { width: 28px; height: 28px; border-radius: 7px; display: block; }
.nav-logo-speak { font-weight: 400; }
.nav-logo-sync  { font-weight: 700; }
.nav-links { display: flex; align-items: center; gap: 4px; list-style: none; }
.nav-links a {
  color: var(--color-text-sec); font-size: 0.9rem; font-weight: 500;
  padding: 6px 14px; border-radius: var(--radius-sm);
  transition: color 0.2s, background 0.2s; text-decoration: none;
}
.nav-links a:hover { color: var(--color-text); background: var(--color-surface-2); }
.nav-links a.active { color: var(--color-accent); }
.btn-nav {
  background: var(--color-accent) !important; color: #fff !important;
  border-radius: var(--radius-sm) !important; padding: 7px 18px !important;
  font-weight: 600 !important; transition: opacity 0.2s, transform 0.2s !important;
}
.btn-nav:hover { opacity: 0.88; transform: translateY(-1px); background: var(--color-accent) !important; }
.btn-nav.soon { background: var(--color-surface-2) !important; color: var(--color-text-ter) !important; cursor: default; }
.nav-hamburger {
  display: none; background: none; border: none;
  padding: 11px; /* 22px icon + 22px padding = 44px minimum touch target */
  color: var(--color-text);
  touch-action: manipulation;
  cursor: pointer;
  -webkit-tap-highlight-color: rgba(255,255,255,0.1);
}
.nav-mobile {
  display: flex; flex-direction: column; gap: 4px;
  position: fixed; top: calc(var(--nav-h) + var(--beta-h) + env(safe-area-inset-top, 0px)); left: 0; right: 0;
  bottom: 0;
  background: #0d0d18;
  padding: 16px 24px 32px; border-bottom: 1px solid var(--color-border);
  z-index: 101;
  overflow-y: auto; -webkit-overflow-scrolling: touch;
  opacity: 0; visibility: hidden; pointer-events: none;
  transform: translateY(-8px);
  transition: opacity 0.18s ease, transform 0.18s ease, visibility 0s linear 0.18s;
}
.nav-mobile.open {
  opacity: 1; visibility: visible; pointer-events: auto;
  transform: translateY(0);
  transition: opacity 0.18s ease, transform 0.18s ease, visibility 0s linear 0s;
}
.nav-mobile a {
  color: var(--color-text); font-size: 1rem; font-weight: 500;
  padding: 14px 16px; border-radius: var(--radius-sm); text-decoration: none;
  transition: background 0.2s;
  cursor: pointer;
  -webkit-tap-highlight-color: rgba(255,255,255,0.08);
}
.nav-mobile a:hover, .nav-mobile a:active { background: var(--color-surface-2); }

/* ── Buttons ────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 8px; padding: 14px 28px; border-radius: var(--radius-md);
  font-size: 1rem; font-weight: 600; border: none; cursor: pointer;
  transition: all 0.2s var(--ease); text-decoration: none; white-space: nowrap;
}
.btn-primary {
  background: var(--color-accent); color: #fff;
  box-shadow: 0 0 24px var(--color-accent-glow);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 4px 32px var(--color-accent-glow); text-decoration: none; color: #fff; }
.btn-outline { background: transparent; color: var(--color-accent); border: 1.5px solid var(--color-accent); }
.btn-outline:hover { background: var(--color-accent-dim); transform: translateY(-2px); text-decoration: none; color: var(--color-accent); }
.btn-ghost { background: var(--color-surface-2); color: var(--color-text-sec); cursor: default; }

/* ── App Store Badge ─────────────────────────────────────────── */
.app-store-badge { display: inline-block; transition: transform 0.2s var(--ease), opacity 0.2s var(--ease); }
.app-store-badge:hover { transform: translateY(-2px); opacity: 0.85; text-decoration: none; }
.app-store-badge img { display: block; }
.footer-badge { margin-top: 16px; }

/* ── Layout ─────────────────────────────────────────────────── */
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }
.section { padding: 96px 0; }
.section-sm { padding: 64px 0; }
.section-label {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 0.8rem; font-weight: 700; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--color-accent); margin-bottom: 16px;
}
.section-title {
  font-size: clamp(2rem, 4vw, 3rem); font-weight: 700;
  letter-spacing: -0.03em; line-height: 1.15; margin-bottom: 20px;
}
.section-subtitle { font-size: 1.15rem; color: var(--color-text-sec); max-width: 560px; line-height: 1.7; }
.text-center { text-align: center; }
.text-center .section-subtitle { margin: 0 auto; }
.divider { height: 1px; background: var(--color-border); }

/* ── Scroll Animations ──────────────────────────────────────── */
.animate-in { opacity: 0; transform: translateY(32px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
.animate-in.visible { opacity: 1; transform: translateY(0); }
.fade-left { opacity: 0; transform: translateX(-32px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
.fade-left.visible { opacity: 1; transform: translateX(0); }
.fade-right { opacity: 0; transform: translateX(32px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
.fade-right.visible { opacity: 1; transform: translateX(0); }
.delay-1 { transition-delay: 0.1s; } .delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; } .delay-4 { transition-delay: 0.4s; }
.delay-5 { transition-delay: 0.5s; }

/* ── Hero ───────────────────────────────────────────────────── */
.hero {
  position: relative; min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  overflow: hidden; padding-top: calc(var(--nav-h) + var(--beta-h) + env(safe-area-inset-top, 0px));
}
.hero-bg-text {
  position: absolute; inset: 0; overflow: hidden; pointer-events: none;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, transparent 25%, black 70%);
  -webkit-mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, transparent 25%, black 70%);
}
.hero-bg-column {
  position: absolute; top: 0; width: 100%;
  animation: prompter-scroll 44s linear infinite;
  opacity: 0.07; font-size: 1.05rem; line-height: 2.3;
  color: var(--color-text); padding: 0 8%; text-align: center; user-select: none;
}
@keyframes prompter-scroll { from { transform: translateY(0); } to { transform: translateY(-50%); } }
.hero-glow {
  position: absolute; border-radius: 50%; filter: blur(130px); pointer-events: none;
}
.hero-glow-1 {
  width: 700px; height: 700px;
  background: radial-gradient(circle, rgba(10,132,255,0.16) 0%, transparent 70%);
  top: -150px; left: 50%; transform: translateX(-50%);
}
.hero-glow-2 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(94,92,230,0.1) 0%, transparent 70%);
  bottom: 0; right: 8%;
}
.hero-content { position: relative; z-index: 2; text-align: center; max-width: 780px; padding: 0 24px; }
.hero-app-icon {
  width: 140px; height: 140px;
  border-radius: 32px;
  box-shadow: 0 0 60px rgba(10,132,255,0.45), 0 20px 60px rgba(0,0,0,0.55);
  margin-bottom: 32px;
  animation: icon-float 4s ease-in-out infinite;
  display: block; margin-left: auto; margin-right: auto;
}
@keyframes icon-float {
  0%, 100% { transform: translateY(0px); }
  50%       { transform: translateY(-10px); }
}
.hero-waveform {
  display: flex; align-items: center; justify-content: center;
  gap: 5px; height: 60px; margin-bottom: 32px;
}
.wave-bar {
  width: 4px; border-radius: 2px; background: var(--color-accent);
  animation: wave-pulse 1.5s ease-in-out infinite;
  box-shadow: 0 0 10px var(--color-accent-glow);
}
.wave-bar:nth-child(1)  { height: 12px; animation-delay: 0.00s; }
.wave-bar:nth-child(2)  { height: 24px; animation-delay: 0.11s; }
.wave-bar:nth-child(3)  { height: 38px; animation-delay: 0.22s; }
.wave-bar:nth-child(4)  { height: 50px; animation-delay: 0.33s; }
.wave-bar:nth-child(5)  { height: 60px; animation-delay: 0.44s; }
.wave-bar:nth-child(6)  { height: 50px; animation-delay: 0.55s; }
.wave-bar:nth-child(7)  { height: 38px; animation-delay: 0.66s; }
.wave-bar:nth-child(8)  { height: 24px; animation-delay: 0.77s; }
.wave-bar:nth-child(9)  { height: 12px; animation-delay: 0.88s; }
@keyframes wave-pulse {
  0%, 100% { transform: scaleY(0.25); opacity: 0.45; }
  50%       { transform: scaleY(1);    opacity: 1;    }
}
.hero-wordmark {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 0.85rem; font-weight: 700; color: var(--color-accent);
  letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 16px;
}
.hero-title {
  font-size: clamp(2.6rem, 6vw, 4.4rem); font-weight: 800;
  letter-spacing: -0.04em; line-height: 1.08; margin-bottom: 20px;
  background: linear-gradient(145deg, #ffffff 0%, rgba(255,255,255,0.65) 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.hero-subtitle {
  font-size: 1.2rem; color: var(--color-text-sec);
  line-height: 1.65; max-width: 540px; margin: 0 auto 40px;
}
.hero-ctas { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-bottom: 56px; }
.hero-badges { display: flex; align-items: center; justify-content: center; gap: 28px; flex-wrap: wrap; }
.hero-badge { display: flex; align-items: center; gap: 6px; font-size: 0.82rem; color: var(--color-text-ter); }
.hero-badge-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--color-accent); opacity: 0.7; }
.scroll-hint {
  position: absolute; bottom: 32px; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 6px;
  color: var(--color-text-ter); font-size: 0.75rem;
  animation: hint-bob 2s ease-in-out infinite;
}
@keyframes hint-bob {
  0%, 100% { opacity: 0.3; transform: translateX(-50%) translateY(0); }
  50%       { opacity: 0.7; transform: translateX(-50%) translateY(6px); }
}

/* ── Feature Cards ──────────────────────────────────────────── */
.features-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.feature-card {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-lg); padding: 32px;
  transition: border-color 0.3s, box-shadow 0.3s, transform 0.3s var(--ease);
}
.feature-card:hover { border-color: var(--color-accent); box-shadow: 0 0 40px var(--color-accent-dim); transform: translateY(-4px); }
.feature-icon {
  width: 52px; height: 52px; background: var(--color-accent-dim);
  border-radius: var(--radius-sm); display: flex; align-items: center;
  justify-content: center; margin-bottom: 20px; color: var(--color-accent); font-size: 1.5rem;
}
.feature-card h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 10px; letter-spacing: -0.02em; }
.feature-card p { font-size: 0.93rem; color: var(--color-text-sec); line-height: 1.65; }

/* ── How It Works ───────────────────────────────────────────── */
.how-steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; position: relative; }
.how-steps::before {
  content: ''; position: absolute; top: 28px;
  left: calc(16.67% + 20px); right: calc(16.67% + 20px);
  height: 1px; background: linear-gradient(90deg, var(--color-accent), var(--color-surface-3), var(--color-accent));
}
.how-step { text-align: center; position: relative; }
.how-step-num {
  width: 56px; height: 56px; border-radius: 50%;
  background: var(--color-surface-2); border: 1.5px solid var(--color-border-light);
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 20px; font-size: 1.2rem; font-weight: 800; color: var(--color-accent);
  position: relative; z-index: 1; box-shadow: 0 0 20px var(--color-accent-dim);
}
.how-step h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 8px; }
.how-step p { font-size: 0.9rem; color: var(--color-text-sec); line-height: 1.6; }

/* ── Audiences ──────────────────────────────────────────────── */
.audience-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.audience-card {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-md); padding: 28px 20px; text-align: center;
  transition: border-color 0.3s, transform 0.3s;
}
.audience-card:hover { border-color: var(--color-border-light); transform: translateY(-2px); }
.audience-emoji { font-size: 2.4rem; margin-bottom: 12px; }
.audience-card h3 { font-size: 0.95rem; font-weight: 700; margin-bottom: 6px; }
.audience-card p { font-size: 0.82rem; color: var(--color-text-sec); line-height: 1.5; }

/* ── Quote Banner ───────────────────────────────────────────── */
.quote-section { background: var(--color-surface); border-top: 1px solid var(--color-border); border-bottom: 1px solid var(--color-border); }
.quote-inner { max-width: 760px; margin: 0 auto; text-align: center; }
.quote-text { font-size: clamp(1.4rem, 3vw, 2rem); font-weight: 300; font-style: italic; color: var(--color-text); line-height: 1.5; letter-spacing: -0.02em; margin-bottom: 16px; }
.quote-text strong { font-weight: 700; font-style: normal; color: var(--color-accent); }
.quote-attr { font-size: 0.85rem; color: var(--color-text-ter); }

/* ── Languages Strip ────────────────────────────────────────── */
.lang-strip { overflow: hidden; padding: 24px 0; position: relative; }
.lang-strip::before, .lang-strip::after {
  content: ''; position: absolute; top: 0; bottom: 0; width: 120px; z-index: 1; pointer-events: none;
}
.lang-strip::before { left: 0; background: linear-gradient(90deg, var(--color-bg), transparent); }
.lang-strip::after  { right: 0; background: linear-gradient(-90deg, var(--color-bg), transparent); }
.lang-track { display: flex; gap: 12px; animation: lang-scroll 28s linear infinite; width: max-content; }
.lang-tag { background: var(--color-surface-2); border: 1px solid var(--color-border); border-radius: 20px; padding: 6px 16px; font-size: 0.82rem; color: var(--color-text-sec); white-space: nowrap; }
@keyframes lang-scroll { from { transform: translateX(0); } to { transform: translateX(-50%); } }

/* ── Feature Rows (Features page) ──────────────────────────── */
.feature-row { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.feature-row.reverse { direction: rtl; }
.feature-row.reverse > * { direction: ltr; }
.feature-row-text h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); font-weight: 700; letter-spacing: -0.03em; margin-bottom: 16px; }
.feature-row-text p { font-size: 1rem; color: var(--color-text-sec); line-height: 1.75; margin-bottom: 12px; }
.feature-visual {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-xl); padding: 40px;
  display: flex; align-items: center; justify-content: center;
  min-height: 280px; position: relative; overflow: hidden;
}
.feature-visual::after {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(ellipse at 50% 0%, var(--color-accent-dim), transparent 70%); pointer-events: none;
}
.mock-prompter {
  width: 100%; max-width: 300px; background: var(--color-bg);
  border-radius: var(--radius-md); padding: 24px 20px;
  border: 1px solid var(--color-border); position: relative; z-index: 1;
}
.mock-focus-line {
  position: absolute; left: 20px; right: 20px; top: 50%;
  height: 1.5px; background: linear-gradient(90deg, transparent, var(--color-accent), transparent); opacity: 0.5;
}
.mock-text-line { height: 10px; border-radius: 5px; background: var(--color-surface-3); margin-bottom: 10px; opacity: 0.5; }
.mock-text-line.active { background: var(--color-text); opacity: 1; box-shadow: 0 0 10px rgba(255,255,255,0.12); }
.mock-text-line.w-full { width: 100%; } .mock-text-line.w-90 { width: 90%; }
.mock-text-line.w-85 { width: 85%; }   .mock-text-line.w-70 { width: 70%; }
.mock-text-line.w-60 { width: 60%; }
.tier-list { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.tier-list li { display: flex; align-items: center; gap: 12px; font-size: 0.9rem; }
.tier-badge {
  background: var(--color-accent-dim); color: var(--color-accent);
  border-radius: 6px; padding: 2px 10px; font-size: 0.75rem; font-weight: 700;
  white-space: nowrap; border: 1px solid rgba(10,132,255,0.3);
}

/* ── Guide Page ─────────────────────────────────────────────── */
.guide-page { padding-top: calc(var(--nav-h) + var(--beta-h) + env(safe-area-inset-top, 0px)); min-height: 100vh; }
.guide-header { background: var(--color-surface); border-bottom: 1px solid var(--color-border); padding: 24px 0; }
.guide-header-inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.guide-header h1 { font-size: 1.3rem; font-weight: 700; letter-spacing: -0.02em; }
.lang-picker { display: flex; align-items: center; gap: 10px; }
.lang-picker label { font-size: 0.85rem; color: var(--color-text-sec); white-space: nowrap; }
.lang-picker select {
  background: var(--color-surface-2); color: var(--color-text);
  border: 1px solid var(--color-border-light); border-radius: var(--radius-sm);
  padding: 8px 14px; font-size: 0.9rem; font-family: var(--font);
  cursor: pointer; outline: none; transition: border-color 0.2s; min-width: 180px;
}
.lang-picker select:focus { border-color: var(--color-accent); }
.guide-header-controls { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.btn-pdf-download {
  display: inline-flex; align-items: center; gap: 7px;
  background: var(--color-accent); color: #fff;
  border-radius: var(--radius-sm); padding: 8px 16px;
  font-size: 0.875rem; font-weight: 600; font-family: var(--font);
  text-decoration: none; white-space: nowrap;
  transition: opacity 0.2s, transform 0.15s;
}
.btn-pdf-download:hover { opacity: 0.88; transform: translateY(-1px); }
.btn-pdf-download svg { flex-shrink: 0; }
.guide-layout {
  display: grid; grid-template-columns: 240px 1fr; gap: 0;
  max-width: var(--max-w); margin: 0 auto; padding: 0 24px;
}
.guide-toc {
  padding: 32px 24px 32px 0; border-right: 1px solid var(--color-border);
  position: sticky; top: calc(var(--nav-h) + 82px); height: fit-content;
  max-height: calc(100vh - var(--nav-h) - 82px); overflow-y: auto;
}
.guide-toc h2 { font-size: 0.7rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--color-text-ter); margin-bottom: 12px; }
.guide-toc ul { list-style: none; display: flex; flex-direction: column; gap: 2px; }
.guide-toc a { display: block; font-size: 0.82rem; color: var(--color-text-sec); padding: 5px 10px; border-radius: var(--radius-sm); text-decoration: none; transition: color 0.2s, background 0.2s; line-height: 1.4; }
.guide-toc a:hover { color: var(--color-text); background: var(--color-surface-2); }
.guide-toc a.active { color: var(--color-accent); background: var(--color-accent-dim); }
.guide-toc .toc-h3 { padding-left: 20px; font-size: 0.78rem; }
.guide-content-wrap { padding: 40px 0 80px 48px; }
.guide-content { max-width: 720px; }
.guide-content h1 { font-size: 2rem; font-weight: 800; letter-spacing: -0.03em; margin-bottom: 8px; }
.guide-content h2 { font-size: 1.4rem; font-weight: 700; letter-spacing: -0.02em; margin: 48px 0 16px; color: var(--color-accent); border-bottom: 1px solid var(--color-border); padding-bottom: 10px; }
.guide-content h3 { font-size: 1.1rem; font-weight: 700; margin: 28px 0 10px; }
.guide-content h4 { font-size: 0.95rem; font-weight: 700; margin: 20px 0 8px; color: var(--color-text-sec); text-transform: uppercase; letter-spacing: 0.05em; }
.guide-content p { margin-bottom: 16px; color: var(--color-text-sec); line-height: 1.75; font-size: 0.97rem; }
.guide-content a { color: var(--color-accent); }
.guide-content strong { color: var(--color-text); font-weight: 600; }
.guide-content ul, .guide-content ol { padding-left: 24px; margin-bottom: 16px; }
.guide-content li { color: var(--color-text-sec); line-height: 1.7; margin-bottom: 6px; font-size: 0.97rem; }
.guide-content hr { border: none; border-top: 1px solid var(--color-border); margin: 36px 0; }
.guide-content code { background: var(--color-surface-2); padding: 1px 6px; border-radius: 4px; font-family: var(--font-mono); font-size: 0.85em; color: var(--color-accent); }
.guide-content blockquote { border-left: 3px solid var(--color-accent); padding-left: 20px; margin: 20px 0; font-style: italic; }
.guide-content img { display: block; max-width: 340px; width: 100%; height: auto; margin: 28px auto; border-radius: var(--radius-md); border: 1px solid var(--color-border); box-shadow: 0 4px 24px rgba(0,0,0,0.18); }
.guide-spinner { display: flex; align-items: center; justify-content: center; padding: 80px 0; color: var(--color-text-ter); gap: 12px; font-size: 0.9rem; }
.spinner-ring { width: 24px; height: 24px; border: 2px solid var(--color-border); border-top-color: var(--color-accent); border-radius: 50%; animation: spin 0.8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.guide-error { text-align: center; padding: 80px 0; color: var(--color-text-ter); }
.guide-error h2 { color: var(--color-text-sec); margin-bottom: 8px; }

/* ── Prose Page (Privacy) ───────────────────────────────────── */
.prose-page { padding: calc(var(--nav-h) + var(--beta-h) + env(safe-area-inset-top, 0px) + 48px) 24px 80px; max-width: 760px; margin: 0 auto; }
.prose-page h1 { font-size: 2.2rem; font-weight: 800; letter-spacing: -0.03em; margin-bottom: 8px; }
.prose-page .meta { font-size: 0.85rem; color: var(--color-text-ter); margin-bottom: 40px; }
.prose-page h2 { font-size: 1.2rem; font-weight: 700; margin: 36px 0 12px; }
.prose-page p { color: var(--color-text-sec); line-height: 1.75; margin-bottom: 16px; font-size: 0.97rem; }
.prose-page ul { padding-left: 24px; margin-bottom: 16px; }
.prose-page li { color: var(--color-text-sec); line-height: 1.7; margin-bottom: 6px; }
.prose-page strong { color: var(--color-text); }
.prose-page hr { border: none; border-top: 1px solid var(--color-border); margin: 32px 0; }

/* ── Footer ─────────────────────────────────────────────────── */
.footer { background: var(--color-surface); border-top: 1px solid var(--color-border); padding: 56px 0 32px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 48px; margin-bottom: 40px; }
.footer-brand p { font-size: 0.88rem; color: var(--color-text-ter); line-height: 1.65; max-width: 300px; margin-top: 12px; }
.footer-nav h4 { font-size: 0.75rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.1em; color: var(--color-text-ter); margin-bottom: 14px; }
.footer-nav ul { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.footer-nav a { font-size: 0.88rem; color: var(--color-text-sec); text-decoration: none; transition: color 0.2s; }
.footer-nav a:hover { color: var(--color-accent); }
.footer-bottom { display: flex; align-items: center; justify-content: space-between; padding-top: 24px; border-top: 1px solid var(--color-border); font-size: 0.8rem; color: var(--color-text-ter); }
.footer-bottom a { color: var(--color-text-ter); }
.footer-bottom a:hover { color: var(--color-accent); }

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 900px) {
  .features-grid { grid-template-columns: 1fr; }
  .how-steps { grid-template-columns: 1fr; }
  .how-steps::before { display: none; }
  .audience-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-row { grid-template-columns: 1fr; gap: 40px; }
  .feature-row.reverse { direction: ltr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .guide-layout { grid-template-columns: 1fr; }
  .guide-toc { display: none; }
  .guide-content-wrap { padding: 32px 0 60px; }
  .nav-links { display: none; }
  .nav-hamburger { display: flex; }
}
@media (max-width: 600px) {
  .audience-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero-ctas { flex-direction: column; align-items: center; }
  .btn { padding: 13px 22px; font-size: 0.95rem; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
  .section { padding: 64px 0; }
  .form-row { grid-template-columns: 1fr; }
}

/* ── Support form ─────────────────────────────────────────── */
.support-form { margin-top: 2rem; }
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
.form-group { margin-bottom: 1.25rem; }
.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-text-sec);
  margin-bottom: 6px;
}
.form-required { color: var(--color-accent); }
.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 12px 14px;
  font-family: var(--font);
  font-size: 0.95rem;
  color: var(--color-text);
  background: var(--color-surface-2);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-sm);
  outline: none;
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
  -webkit-appearance: none;
  appearance: none;
}
.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--color-text-ter);
}
.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-dim);
}
.form-select {
  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='%23AEAEB2' stroke-width='2.5' stroke-linecap='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
  cursor: pointer;
}
.form-textarea {
  resize: vertical;
  min-height: 120px;
}
.form-submit {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 0.5rem;
  padding: 14px 32px;
  font-size: 1rem;
  cursor: pointer;
  border: none;
}