/* =============================================================
   Phonals Media Center — Design System
   Modern dark software-product theme (inspired by audials.com)
   ============================================================= */

/* ---------- Design tokens ---------- */
:root {
  /* Surfaces */
  --bg: #07080c;
  --bg-gradient: radial-gradient(1200px 600px at 70% -10%, rgba(124,92,255,0.16), transparent 60%),
                 radial-gradient(900px 500px at 10% 20%, rgba(34,211,238,0.10), transparent 55%);
  --bg-elev: #0d0f14;
  --surface: #12141b;
  --surface-2: #161923;
  --surface-3: #1c2030;
  --border: rgba(255,255,255,0.08);
  --border-strong: rgba(255,255,255,0.14);

  /* Text */
  --text: #eceef4;
  --text-muted: #9aa1b5;
  --text-dim: #6c7387;

  /* Brand */
  --accent: #7c5cff;
  --accent-2: #b85cff;
  --cyan: #22d3ee;
  --accent-soft: rgba(124,92,255,0.14);
  --gradient: linear-gradient(120deg, #7c5cff 0%, #b85cff 60%, #d84cff 100%);
  --gradient-cyan: linear-gradient(120deg, #22d3ee 0%, #7c5cff 100%);

  /* Status */
  --green: #34d399;
  --amber: #fbbf24;
  --red: #fb7185;

  /* Layout */
  --container: 1180px;
  --header-h: 76px;
  --radius: 16px;
  --radius-sm: 10px;
  --radius-lg: 24px;
  --shadow: 0 20px 60px rgba(0,0,0,0.45);
  --shadow-sm: 0 8px 24px rgba(0,0,0,0.3);

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

/* ---------- Reset / base ---------- */
*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  background-image: var(--bg-gradient);
  background-attachment: fixed;
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

img, svg { max-width: 100%; display: block; }

a { color: inherit; text-decoration: none; }

h1, h2, h3, h4 {
  margin: 0 0 0.5em;
  font-weight: 700;
  line-height: 1.18;
  letter-spacing: -0.02em;
}

p { margin: 0 0 1em; }

ul { margin: 0; padding: 0; list-style: none; }

button { font-family: inherit; cursor: pointer; }

/* ---------- Layout helpers ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* 加宽容器：用于更大的内容块（如首页应用窗口 mock） */
.container--wide {
  max-width: 1104px;
}

.section { padding: 92px 0; }
.section--tight { padding: 60px 0; }
.section--alt { background: var(--bg-elev); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }

.section-head { max-width: 720px; margin: 0 auto 56px; text-align: center; }
.section-head--left { margin: 0 0 48px; text-align: left; max-width: 760px; }

.kicker {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--cyan);
  padding: 6px 14px;
  border-radius: 100px;
  background: rgba(34,211,238,0.08);
  border: 1px solid rgba(34,211,238,0.18);
  margin-bottom: 18px;
}

.section-title { font-size: clamp(1.8rem, 4vw, 2.7rem); margin-bottom: 14px; }
.section-sub { color: var(--text-muted); font-size: 1.08rem; margin: 0; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 600;
  border: 1px solid transparent;
  transition: transform .15s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }

.btn--primary {
  background: var(--gradient);
  color: #fff;
  box-shadow: 0 10px 30px rgba(124,92,255,0.35);
}
.btn--primary:hover { box-shadow: 0 16px 40px rgba(124,92,255,0.5); }

.btn--ghost {
  background: rgba(255,255,255,0.04);
  border-color: var(--border-strong);
  color: var(--text);
}
.btn--ghost:hover { background: rgba(255,255,255,0.08); border-color: rgba(255,255,255,0.26); }

.btn--cyan {
  background: var(--gradient-cyan);
  color: #06121a;
  box-shadow: 0 10px 30px rgba(34,211,238,0.28);
}
.btn--block { width: 100%; justify-content: center; }
.btn--lg { padding: 16px 34px; font-size: 16px; border-radius: 14px; }
.btn--sm { padding: 9px 18px; font-size: 14px; border-radius: 10px; }

.btn .arrow { transition: transform .2s ease; }
.btn:hover .arrow { transform: translateX(3px); }

/* ---------- Badges / pills ---------- */
.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 100px;
  font-size: 12.5px;
  font-weight: 600;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  color: var(--text-muted);
}
.pill--accent { color: var(--accent-2); background: var(--accent-soft); border-color: rgba(124,92,255,0.25); }
.pill--cyan { color: var(--cyan); background: rgba(34,211,238,0.08); border-color: rgba(34,211,238,0.22); }

/* =============================================================
   HEADER / NAVIGATION
   ============================================================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(7,8,12,0.72);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}

.nav-wrap {
  height: var(--header-h);
  display: flex;
  align-items: center;
  gap: 26px;
}

.brand { display: flex; align-items: center; gap: 11px; margin-right: 8px; }
.brand img { width: 36px; height: 36px; }
.brand-name { font-size: 18px; font-weight: 700; letter-spacing: -0.02em; display: flex; flex-direction: column; line-height: 1.05; }
.brand-name .sub { font-size: 11px; font-weight: 500; color: var(--text-muted); letter-spacing: 0.04em; }

.main-nav { display: flex; align-items: center; gap: 4px; flex: 1; }
.main-nav a {
  padding: 9px 14px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-muted);
  transition: color .15s, background .15s;
}
.main-nav a:hover { color: var(--text); background: rgba(255,255,255,0.05); }
.main-nav a.active { color: #fff; background: var(--accent-soft); }
.main-nav a.active::after { content: ''; }

.nav-actions { display: flex; align-items: center; gap: 12px; margin-left: auto; }

/* Language switcher */
.lang {
  position: relative;
}
.lang__toggle {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 9px 14px;
  border-radius: 10px;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 14px;
  font-weight: 600;
  transition: background .15s, border-color .15s;
}
.lang__toggle:hover { background: rgba(255,255,255,0.09); border-color: var(--border-strong); }
.lang__toggle .chevron { transition: transform .2s; font-size: 12px; color: var(--text-muted); }
.lang.open .lang__toggle .chevron { transform: rotate(180deg); }

.lang__menu {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  min-width: 190px;
  background: var(--surface-2);
  border: 1px solid var(--border-strong);
  border-radius: 14px;
  box-shadow: var(--shadow);
  padding: 6px;
  opacity: 0;
  transform: translateY(-6px);
  pointer-events: none;
  transition: opacity .18s ease, transform .18s ease;
  z-index: 120;
}
.lang.open .lang__menu { opacity: 1; transform: translateY(0); pointer-events: auto; }

.lang__item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 9px 12px;
  border-radius: 9px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-size: 14px;
  text-align: left;
  transition: background .12s, color .12s;
}
.lang__item:hover { background: rgba(255,255,255,0.06); color: var(--text); }
.lang__item.active { color: #fff; background: var(--accent-soft); }
.lang__item.active .check { color: var(--accent-2); }
.lang__item .check { font-size: 13px; color: transparent; }

/* Mobile toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  border-radius: 10px;
}
.nav-toggle span { display: block; width: 20px; height: 2px; background: var(--text); border-radius: 2px; transition: transform .2s, opacity .2s; }
.nav-toggle.open span:nth-child(1){ transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2){ opacity: 0; }
.nav-toggle.open span:nth-child(3){ transform: translateY(-7px) rotate(-45deg); }

/* Mobile menu panel */
.mobile-menu {
  display: none;
  position: fixed;
  top: var(--header-h);
  left: 0;
  right: 0;
  background: var(--bg-elev);
  border-bottom: 1px solid var(--border);
  padding: 16px 24px 28px;
  z-index: 99;
  box-shadow: var(--shadow-sm);
}
.mobile-menu.open { display: block; }
.mobile-menu a { display: block; padding: 14px 8px; font-size: 17px; font-weight: 500; border-bottom: 1px solid var(--border); }
.mobile-menu .mobile-lang-label { margin-top: 20px; font-size: 12px; letter-spacing: .1em; text-transform: uppercase; color: var(--text-dim); }
.mobile-lang-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-top: 10px; }
.mobile-lang-grid .lang__item { justify-content: center; border: 1px solid var(--border); }

/* =============================================================
   HERO
   ============================================================= */
.hero { padding: 84px 0 70px; text-align: center; position: relative; }
.hero__inner { max-width: 860px; margin: 0 auto; }
.hero__badges { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-bottom: 26px; }
.hero__title { font-size: clamp(2.2rem, 6vw, 4rem); margin-bottom: 20px; }
.hero__title .grad { background: var(--gradient); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero__sub { font-size: clamp(1.05rem, 2vw, 1.3rem); color: var(--text-muted); max-width: 720px; margin: 0 auto 34px; }
.hero__cta { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; }
.hero__note { margin-top: 22px; font-size: 13.5px; color: var(--text-dim); }

/* Hero visual (app window mockup) */
.app-window {
  max-width: 1056px;
  margin: 60px auto 0;
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  overflow: hidden;
  text-align: left;
}
.app-window__bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 18px;
  background: var(--surface-2);
  border-bottom: 1px solid var(--border);
}
.app-window__dot { width: 11px; height: 11px; border-radius: 50%; }
.dot--r { background: #ff5f57; } .dot--y { background: #febc2e; } .dot--g { background: #28c840; }
.app-window__title { margin-left: 12px; font-size: 13px; color: var(--text-muted); }
.app-window__sidebar { width: 200px; background: var(--bg-elev); border-right: 1px solid var(--border); padding: 16px 12px; }

.mock-layout { display: flex; min-height: 360px; }
.mock-nav { display: flex; flex-direction: column; gap: 4px; }
.mock-nav .m-item {
  display: flex; align-items: center; gap: 9px; padding: 9px 12px; border-radius: 9px;
  font-size: 13.5px; color: var(--text-muted);
}
.mock-nav .m-item.active { background: var(--accent-soft); color: #fff; }
.mock-nav .m-item .ic { width: 16px; text-align: center; opacity: .8; }
.mock-main { flex: 1; padding: 20px 24px; }
.mock-main__head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 18px; }
.mock-search { padding: 8px 14px; border-radius: 9px; background: var(--surface-2); border: 1px solid var(--border); color: var(--text-dim); font-size: 13px; }
.mock-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.mock-card { background: var(--surface-2); border: 1px solid var(--border); border-radius: 12px; padding: 10px; }
.mock-card__art { width: 100%; aspect-ratio: 1; object-fit: cover; border-radius: 9px; display: block; margin-bottom: 10px; background: var(--surface-3); }
.mock-card__t { font-size: 12.5px; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.mock-card__s { font-size: 11px; color: var(--text-muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* =============================================================
   FEATURE CARDS / GRIDS
   ============================================================= */
.feature-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 22px; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px;
  transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
}
.card:hover { transform: translateY(-4px); border-color: rgba(124,92,255,0.35); box-shadow: var(--shadow-sm); }
.card__icon {
  width: 52px; height: 52px; border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  background: var(--accent-soft); border: 1px solid rgba(124,92,255,0.22);
  margin-bottom: 18px; font-size: 24px;
}
.card__icon--cyan { background: rgba(34,211,238,0.08); border-color: rgba(34,211,238,0.22); }
.card__icon--green { background: rgba(52,211,153,0.08); border-color: rgba(52,211,153,0.22); }
.card__icon--amber { background: rgba(251,191,36,0.08); border-color: rgba(251,191,36,0.22); }
.card h3 { font-size: 1.22rem; margin-bottom: 10px; }
.card p { color: var(--text-muted); font-size: 0.98rem; margin: 0; }

/* Interface list chips */
.chips { display: flex; flex-wrap: wrap; gap: 10px; }
.chip {
  padding: 10px 18px; border-radius: 100px;
  background: var(--surface-2); border: 1px solid var(--border);
  font-size: 14.5px; font-weight: 500;
}
.chip:hover { border-color: rgba(124,92,255,0.4); }

/* =============================================================
   MEDIA TYPE PLATFORMS
   ============================================================= */
.media-strip { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
.media-tile {
  text-align: center; padding: 26px 16px; border-radius: var(--radius);
  background: var(--surface); border: 1px solid var(--border);
  transition: transform .2s, border-color .2s;
}
.media-tile:hover { transform: translateY(-4px); border-color: var(--border-strong); }
.media-tile .em { font-size: 30px; margin-bottom: 12px; }
.media-tile h4 { font-size: 15px; margin: 0 0 4px; }
.media-tile p { font-size: 13px; color: var(--text-muted); margin: 0; }

.platform-strip { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.platform-card {
  display: flex; align-items: center; gap: 16px; padding: 26px;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  transition: transform .2s, border-color .2s;
}
.platform-card:hover { transform: translateY(-3px); border-color: var(--border-strong); }
.platform-card__icon { font-size: 34px; }
.platform-card h4 { margin: 0 0 3px; font-size: 1.05rem; }
.platform-card .meta { font-size: 12.5px; color: var(--text-muted); }

/* =============================================================
   HOW IT WORKS (steps)
   ============================================================= */
.steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 22px; counter-reset: step; }
.step { position: relative; padding: 30px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); }
.step__num {
  font-size: 15px; font-weight: 700; color: var(--accent-2);
  width: 42px; height: 42px; border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  background: var(--accent-soft); border: 1px solid rgba(124,92,255,0.24);
  margin-bottom: 18px;
}
.step h3 { font-size: 1.12rem; margin-bottom: 8px; }
.step p { color: var(--text-muted); font-size: 0.96rem; margin: 0; }

/* =============================================================
   DOWNLOAD PAGE
   ============================================================= */
.download-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.download-card {
  text-align: center; padding: 38px 28px;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg);
  transition: transform .2s, border-color .2s;
}
.download-card:hover { transform: translateY(-4px); border-color: var(--border-strong); }
.download-card__icon { font-size: 56px; margin-bottom: 18px; }
.download-card h3 { font-size: 1.4rem; }
.download-card .os-name { color: var(--text-muted); font-size: 14px; margin-bottom: 20px; }
.download-card .soon {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 9px 18px; border-radius: 10px;
  background: rgba(251,191,36,0.1); border: 1px solid rgba(251,191,36,0.3);
  color: var(--amber); font-size: 14px; font-weight: 600;
}
.download-card .soon--coming { background: rgba(255,255,255,0.04); border-color: var(--border); color: var(--text-muted); }

.req-list { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px,1fr)); gap: 18px; margin-top: 30px; }
.req-box { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; }
.req-box h4 { font-size: 1rem; margin-bottom: 14px; }
.req-box ul { display: grid; gap: 8px; }
.req-box li { font-size: 14.5px; color: var(--text-muted); padding-left: 18px; position: relative; }
.req-box li::before { content: '•'; position: absolute; left: 0; color: var(--accent-2); }

/* =============================================================
   HELP / HOW-TO
   ============================================================= */
.help-layout { display: grid; grid-template-columns: 260px 1fr; gap: 44px; align-items: start; }
.help-sidebar { position: sticky; top: calc(var(--header-h) + 24px); }
.help-sidebar h4 { font-size: 12px; letter-spacing: .1em; text-transform: uppercase; color: var(--text-dim); margin-bottom: 12px; }
.help-sidebar ul { display: flex; flex-direction: column; gap: 2px; }
.help-sidebar a {
  display: block; padding: 9px 12px; border-radius: 9px; color: var(--text-muted); font-size: 14.5px;
}
.help-sidebar a:hover, .help-sidebar a.active { color: #fff; background: rgba(255,255,255,0.05); }

.article { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 34px 38px; margin-bottom: 26px; scroll-margin-top: calc(var(--header-h) + 20px); }
.article__meta { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 18px; }
.article h2 { font-size: 1.7rem; }
.article h3 { font-size: 1.18rem; margin: 26px 0 10px; color: var(--cyan); }
.article p { color: var(--text-muted); }
.article ol, .article ul.tick { margin: 0 0 18px; padding-left: 4px; }
.article ol { list-style: none; counter-reset: step; display: grid; gap: 16px; }
.article ol > li { counter-increment: step; position: relative; padding-left: 52px; color: var(--text-muted); font-size: 0.98rem; }
.article ol > li::before {
  content: counter(step); position: absolute; left: 0; top: 0;
  width: 36px; height: 36px; border-radius: 10px;
  background: var(--accent-soft); border: 1px solid rgba(124,92,255,0.24);
  color: var(--accent-2); font-weight: 700; font-size: 15px;
  display: flex; align-items: center; justify-content: center;
}
.article .tip {
  margin: 18px 0; padding: 16px 20px; border-radius: 12px;
  background: rgba(34,211,238,0.07); border: 1px solid rgba(34,211,238,0.18);
  font-size: 14.5px; color: #cfeffe;
}
.article .tip strong { color: var(--cyan); }

/* =============================================================
   FAQ ACCORDION
   ============================================================= */
.faq { display: grid; gap: 14px; max-width: 820px; margin: 0 auto; }
.faq__item { background: var(--surface); border: 1px solid var(--border); border-radius: 14px; overflow: hidden; }
.faq__q {
  width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 20px 24px; background: transparent; border: none; color: var(--text);
  font-size: 16.5px; font-weight: 600; text-align: left;
}
.faq__q .plus { font-size: 22px; color: var(--accent-2); transition: transform .2s; }
.faq__item.open .faq__q .plus { transform: rotate(45deg); }
.faq__a { max-height: 0; overflow: hidden; transition: max-height .3s ease; }
.faq__a-inner { padding: 0 24px 22px; color: var(--text-muted); font-size: 15px; }

/* =============================================================
   SUPPORT PAGE
   ============================================================= */
.support-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px,1fr)); gap: 22px; }
.support-card { text-align: center; padding: 34px 28px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); }
.support-card .em { font-size: 40px; margin-bottom: 16px; }
.support-card h3 { font-size: 1.2rem; margin-bottom: 8px; }
.support-card p { font-size: 14.5px; color: var(--text-muted); }

.form { max-width: 760px; margin: 40px auto 0; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 34px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form .field { display: flex; flex-direction: column; gap: 8px; }
.form .field.full { grid-column: 1 / -1; }
.form label { font-size: 14px; font-weight: 600; color: var(--text); }
.form input, .form select, .form textarea {
  padding: 13px 15px; border-radius: 11px; border: 1px solid var(--border-strong);
  background: var(--bg-elev); color: var(--text); font-size: 15px; font-family: inherit;
  transition: border-color .15s, box-shadow .15s;
}
.form input:focus, .form select:focus, .form textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(124,92,255,0.18); }
.form textarea { resize: vertical; min-height: 130px; }
.form-note { font-size: 13px; color: var(--text-dim); margin-top: 16px; }

/* =============================================================
   STATS / TRUST BAND
   ============================================================= */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px,1fr)); gap: 22px; }
.stat { text-align: center; padding: 30px 20px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); }
.stat__num { font-size: clamp(1.9rem, 4vw, 2.6rem); font-weight: 800; background: var(--gradient); -webkit-background-clip: text; background-clip: text; color: transparent; }
.stat__label { margin-top: 6px; color: var(--text-muted); font-size: 14.5px; }

/* =============================================================
   CTA BANNER
   ============================================================= */
.cta-banner {
  position: relative; overflow: hidden; padding: 70px 40px; text-align: center;
  border-radius: var(--radius-lg); border: 1px solid var(--border-strong);
  background: linear-gradient(120deg, rgba(124,92,255,0.16), rgba(34,211,238,0.10));
}
.cta-banner h2 { font-size: clamp(1.8rem, 4vw, 2.6rem); }
.cta-banner p { color: var(--text-muted); max-width: 600px; margin: 0 auto 28px; font-size: 1.05rem; }
.cta-banner .cta-row { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; }

/* =============================================================
   FOOTER
   ============================================================= */
.site-footer { border-top: 1px solid var(--border); padding: 64px 0 30px; background: var(--bg-elev); }
.footer-grid { display: grid; grid-template-columns: 1.6fr repeat(3, 1fr); gap: 40px; }
.footer-brand img { width: 40px; height: 40px; margin-bottom: 14px; }
.footer-brand p { color: var(--text-muted); font-size: 14px; max-width: 300px; }
.footer-social { display: flex; gap: 12px; margin-top: 18px; }
.footer-social a { width: 40px; height: 40px; border-radius: 10px; background: rgba(255,255,255,0.05); border: 1px solid var(--border); display: flex; align-items: center; justify-content: center; transition: background .15s; }
.footer-social a:hover { background: rgba(255,255,255,0.1); }
.footer-col h4 { font-size: 14px; letter-spacing: .02em; color: var(--text); margin-bottom: 16px; }
.footer-col ul { display: grid; gap: 10px; }
.footer-col a { color: var(--text-muted); font-size: 14px; transition: color .15s; }
.footer-col a:hover { color: var(--text); }
.footer-bottom { margin-top: 48px; padding-top: 24px; border-top: 1px solid var(--border); display: flex; flex-wrap: wrap; gap: 18px; justify-content: space-between; align-items: center; }
.footer-bottom p { color: var(--text-dim); font-size: 13px; margin: 0; }
.footer-legal { display: flex; flex-wrap: wrap; gap: 18px; }
.footer-legal a { color: var(--text-dim); font-size: 13px; }
.footer-legal a:hover { color: var(--text); }

/* =============================================================
   REVEAL ANIMATION
   ============================================================= */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* =============================================================
   RESPONSIVE
   ============================================================= */
@media (max-width: 1024px) {
  .help-layout { grid-template-columns: 1fr; }
  .help-sidebar { position: static; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 900px) {
  .main-nav { display: none; }
  .nav-toggle { display: flex; }
  .nav-actions { margin-left: auto; }
  .section { padding: 64px 0; }
  .media-strip { grid-template-columns: repeat(2, 1fr); }
  .platform-strip { grid-template-columns: 1fr; }
  .download-grid { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  .container { padding: 0 18px; }
  .hero { padding: 60px 0 40px; }
  .media-strip { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .app-window__sidebar { display: none; }
  .mock-grid { grid-template-columns: repeat(2, 1fr); }
  .btn--lg { width: 100%; }
}