/* =========================================================
   KGFMail — shared stylesheet
   Tokens → base → layout → components → sections → pages
   ========================================================= */

/* ---------- Tokens ---------- */
:root {
  /* Typography */
  --font-display: "Bricolage Grotesque", "Segoe UI", system-ui, sans-serif;
  --font-body: "Onest", "Segoe UI", system-ui, -apple-system, sans-serif;

  --fs-xs: 0.8125rem;
  --fs-sm: 0.9375rem;
  --fs-base: 1.0625rem;
  --fs-lg: 1.1875rem;
  --fs-xl: clamp(1.375rem, 1.1rem + 0.9vw, 1.625rem);
  --fs-2xl: clamp(1.875rem, 1.3rem + 2.2vw, 2.875rem);
  --fs-3xl: clamp(2.5rem, 1.6rem + 4vw, 4.5rem);

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4rem;
  --space-9: 6rem;
  --section-y: clamp(4.5rem, 3rem + 6vw, 8rem);
  --container: 1200px;
  --gutter: clamp(1.25rem, 0.8rem + 2vw, 2.5rem);

  /* Radius — scaled by hierarchy */
  --r-sm: 8px;
  --r-md: 12px;
  --r-lg: 18px;
  --r-xl: 26px;
  --r-pill: 999px;

  /* Motion */
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
  --t-fast: 160ms;
  --t-med: 280ms;

  /* Light theme */
  --bg: #f5f7fb;
  --bg-elev: #ffffff;
  --surface: #ffffff;
  --surface-2: #eef1f7;
  --surface-3: #e4e8f1;
  --text: #0d1426;
  --text-2: #4b556b;
  --text-3: #858ea3;
  --border: #e1e5ee;
  --border-strong: #cfd5e2;
  --accent: #2f5bff;
  --accent-hover: #2248e0;
  --accent-2: #0aa6c2;
  --accent-soft: rgba(47, 91, 255, 0.08);
  --accent-soft-2: rgba(10, 166, 194, 0.1);
  --on-accent: #ffffff;
  --ring-track: #e6eaf3;
  --shadow-sm: 0 1px 2px rgba(16, 24, 48, 0.05), 0 1px 1px rgba(16, 24, 48, 0.03);
  --shadow-md: 0 6px 20px -8px rgba(16, 24, 48, 0.12), 0 2px 6px -2px rgba(16, 24, 48, 0.06);
  --shadow-lg: 0 30px 60px -24px rgba(22, 36, 84, 0.22), 0 12px 24px -12px rgba(22, 36, 84, 0.1);
  --hero-glow: radial-gradient(60% 55% at 78% 30%, rgba(47, 91, 255, 0.1), transparent 70%),
               radial-gradient(40% 40% at 95% 70%, rgba(10, 166, 194, 0.08), transparent 70%);
  color-scheme: light;
}

[data-theme="dark"] {
  --bg: #07090e;
  --bg-elev: #0d1017;
  --surface: #11151e;
  --surface-2: #171c27;
  --surface-3: #1f2531;
  --text: #f1f4fa;
  --text-2: #a4adbf;
  --text-3: #6c7589;
  --border: #212735;
  --border-strong: #2d3444;
  --accent: #6b93ff;
  --accent-hover: #86a7ff;
  --accent-2: #3fd3ea;
  --accent-soft: rgba(107, 147, 255, 0.12);
  --accent-soft-2: rgba(63, 211, 234, 0.1);
  --on-accent: #06080d;
  --ring-track: #1c2230;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 8px 24px -10px rgba(0, 0, 0, 0.6);
  --shadow-lg: 0 40px 80px -30px rgba(0, 0, 0, 0.75), 0 0 0 1px rgba(255, 255, 255, 0.02);
  --hero-glow: radial-gradient(55% 50% at 78% 30%, rgba(107, 147, 255, 0.14), transparent 70%),
               radial-gradient(40% 40% at 95% 70%, rgba(63, 211, 234, 0.08), transparent 70%);
  color-scheme: dark;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--fs-base);
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body.theme-ready,
body.theme-ready .nav,
body.theme-ready .card,
body.theme-ready .mock {
  transition: background-color var(--t-med) var(--ease), color var(--t-med) var(--ease),
    border-color var(--t-med) var(--ease);
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; }
input, select { font: inherit; color: inherit; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  margin: 0;
  line-height: 1.1;
  letter-spacing: -0.02em;
  font-weight: 700;
  text-wrap: balance;
}
p { margin: 0; text-wrap: pretty; }

:focus-visible {
  outline: 2.5px solid var(--accent);
  outline-offset: 3px;
  border-radius: 6px;
}

.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-link {
  position: absolute; left: 1rem; top: -100px; z-index: 200;
  background: var(--accent); color: var(--on-accent);
  padding: 0.6rem 1rem; border-radius: var(--r-sm); font-weight: 600;
}
.skip-link:focus { top: 1rem; }

.icon { width: 20px; height: 20px; stroke-width: 1.9; flex-shrink: 0; }

/* ---------- Layout ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section { padding-block: var(--section-y); }

.section-head {
  max-width: 640px;
  margin-bottom: var(--space-8);
}
.section-head--center { margin-inline: auto; text-align: center; }
.section-head h2 { font-size: var(--fs-2xl); }
.section-head p {
  margin-top: var(--space-4);
  color: var(--text-2);
  font-size: var(--fs-lg);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 48px;
  padding: 0 1.4rem;
  border-radius: var(--r-pill);
  border: 1px solid transparent;
  font-weight: 600;
  font-size: var(--fs-sm);
  line-height: 1;
  white-space: nowrap;
  transition: background-color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease),
    transform var(--t-fast) var(--ease), box-shadow var(--t-fast) var(--ease), color var(--t-fast);
}
.btn:active { transform: translateY(1px); }
.btn .icon { width: 18px; height: 18px; }

.btn-primary {
  background: var(--accent);
  color: var(--on-accent);
  box-shadow: 0 8px 20px -10px var(--accent);
}
.btn-primary:hover { background: var(--accent-hover); box-shadow: 0 10px 24px -10px var(--accent); }

.btn-secondary {
  background: var(--surface);
  border-color: var(--border-strong);
  color: var(--text);
}
.btn-secondary:hover { border-color: var(--text-3); background: var(--surface-2); }

.btn-ghost { background: transparent; color: var(--text-2); }
.btn-ghost:hover { color: var(--text); background: var(--surface-2); }

.btn-sm { min-height: 40px; padding: 0 1rem; }
.btn-lg { min-height: 54px; padding: 0 1.75rem; font-size: var(--fs-base); }
.btn-block { width: 100%; }

.icon-btn {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: var(--r-pill);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-2);
  transition: color var(--t-fast), border-color var(--t-fast), background-color var(--t-fast);
}
.icon-btn:hover { color: var(--text); border-color: var(--border-strong); }

/* ---------- Logo ---------- */
.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.03em;
}
.logo-mark {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  background: linear-gradient(145deg, var(--accent), var(--accent-2));
  color: #fff;
  box-shadow: 0 6px 14px -6px var(--accent);
}
.logo-mark svg { width: 20px; height: 20px; }
.logo-text span { color: var(--text-3); font-weight: 600; }

/* ---------- Theme toggle ---------- */
.theme-toggle { position: relative; overflow: hidden; }
.theme-toggle .icon {
  position: absolute;
  transition: transform var(--t-med) var(--ease), opacity var(--t-med) var(--ease);
}
.theme-toggle .icon-moon { transform: translateY(0) rotate(0); opacity: 1; }
.theme-toggle .icon-sun { transform: translateY(24px) rotate(-90deg); opacity: 0; }
[data-theme="dark"] .theme-toggle .icon-moon { transform: translateY(-24px) rotate(90deg); opacity: 0; }
[data-theme="dark"] .theme-toggle .icon-sun { transform: translateY(0) rotate(0); opacity: 1; }

/* ---------- Navigation ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--t-med);
}
.nav.is-scrolled { border-bottom-color: var(--border); }

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
  height: 72px;
}

.nav-links {
  display: flex;
  gap: var(--space-1);
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-links a {
  display: inline-block;
  padding: 0.55rem 0.9rem;
  border-radius: var(--r-pill);
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--text-2);
  transition: color var(--t-fast), background-color var(--t-fast);
}
.nav-links a:hover { color: var(--text); background: var(--surface-2); }

.nav-actions { display: flex; align-items: center; gap: var(--space-2); }

.nav-burger { display: none; }

.mobile-menu {
  display: none;
  position: fixed;
  inset: 72px 0 0 0;
  z-index: 49;
  background: var(--bg);
  padding: var(--space-5) var(--gutter) var(--space-7);
  overflow-y: auto;
  opacity: 0;
  transform: translateY(-8px);
  transition: opacity var(--t-med) var(--ease), transform var(--t-med) var(--ease);
}
.mobile-menu.is-open { opacity: 1; transform: none; }
.mobile-menu ul { list-style: none; margin: 0; padding: 0; }
.mobile-menu li a {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.1rem 0.25rem;
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  border-bottom: 1px solid var(--border);
}
.mobile-menu li a .icon { color: var(--text-3); }
.mobile-menu-actions {
  display: grid;
  gap: var(--space-3);
  margin-top: var(--space-6);
}
body.menu-open { overflow: hidden; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding-top: clamp(3rem, 2rem + 4vw, 6rem);
  padding-bottom: clamp(4rem, 3rem + 4vw, 7rem);
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--hero-glow);
  pointer-events: none;
}
.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.08fr);
  gap: clamp(2.5rem, 2rem + 3vw, 5rem);
  align-items: center;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0.9rem 0.4rem 0.45rem;
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: var(--r-pill);
  font-size: var(--fs-xs);
  font-weight: 600;
  color: var(--text-2);
  box-shadow: var(--shadow-sm);
}
.badge-dot {
  display: grid;
  place-items: center;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent);
}
.badge-dot .icon { width: 13px; height: 13px; }

.hero h1 {
  margin-top: var(--space-5);
  font-size: var(--fs-3xl);
  letter-spacing: -0.04em;
  line-height: 1;
}
.hero-lead {
  margin-top: var(--space-5);
  font-size: var(--fs-lg);
  color: var(--text-2);
  max-width: 34ch;
}
.hero-lead strong { color: var(--text); font-weight: 600; }

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-6);
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem 0.75rem;
  margin-top: var(--space-6);
  font-size: var(--fs-sm);
  color: var(--text-2);
  font-weight: 500;
}
.hero-meta .sep { color: var(--text-3); }
.hero-meta .addr { color: var(--accent); font-weight: 600; }

/* ---------- Address display (signature element) ---------- */
.address {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.02em;
  white-space: nowrap;
}
.address .at {
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ---------- Mail mockup ---------- */
.mock {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-xl);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  font-size: 13px;
  line-height: 1.4;
}
.mock-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  background: var(--surface-2);
}
.mock-bar i { width: 10px; height: 10px; border-radius: 50%; background: var(--border-strong); }
.mock-url {
  margin-left: 12px;
  flex: 1;
  max-width: 260px;
  height: 24px;
  border-radius: var(--r-pill);
  background: var(--surface);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0 10px;
  font-size: 11.5px;
  color: var(--text-3);
}
.mock-url .icon { width: 12px; height: 12px; }

.mock-body { display: grid; grid-template-columns: 172px 1fr; min-height: 360px; }

.mock-side {
  padding: 16px 12px;
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.mock-side .logo { font-size: 15px; gap: 8px; margin: 0 6px 14px; }
.mock-side .logo-mark { width: 24px; height: 24px; border-radius: 7px; }
.mock-side .logo-mark svg { width: 14px; height: 14px; }

.mock-compose {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 12px;
  margin-bottom: 8px;
  border-radius: var(--r-md);
  background: var(--accent);
  color: var(--on-accent);
  font-weight: 600;
  font-size: 12.5px;
}
.mock-compose .icon { width: 15px; height: 15px; }

.mock-folder {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border-radius: var(--r-sm);
  color: var(--text-2);
  font-weight: 500;
}
.mock-folder .icon { width: 15px; height: 15px; }
.mock-folder .count { margin-left: auto; font-size: 11px; font-weight: 600; color: var(--text-3); }
.mock-folder.is-active { background: var(--accent-soft); color: var(--accent); }
.mock-folder.is-active .count { color: var(--accent); }

.mock-storage {
  margin-top: auto;
  padding: 12px 10px 4px;
  border-top: 1px solid var(--border);
}
.mock-storage-label { display: flex; justify-content: space-between; font-size: 11px; color: var(--text-3); }
.mock-storage-label b { color: var(--text); font-weight: 600; }
.meter {
  height: 6px;
  border-radius: var(--r-pill);
  background: var(--ring-track);
  margin-top: 8px;
  overflow: hidden;
}
.meter span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
}

.mock-main { display: flex; flex-direction: column; min-width: 0; }
.mock-top {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
}
.mock-search {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 8px;
  height: 34px;
  padding: 0 12px;
  border-radius: var(--r-md);
  background: var(--surface-2);
  color: var(--text-3);
  font-size: 12.5px;
  min-width: 0;
}
.mock-search .icon { width: 14px; height: 14px; }
.mock-user {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--text-2);
  font-weight: 500;
}
.avatar {
  width: 30px;
  height: 30px;
  flex-shrink: 0;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 11.5px;
  font-weight: 700;
  color: #fff;
  background: var(--av, #6b7a99);
}

.mock-list-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 14px 16px 6px;
}
.mock-list-head h4 { font-size: 15px; letter-spacing: -0.01em; }
.mock-list-head span { font-size: 11px; color: var(--text-3); }

.mail-row {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
  padding: 10px 16px;
  border-top: 1px solid var(--border);
}
.mail-row:first-of-type { border-top: 0; }
.mail-row .who { font-weight: 600; color: var(--text); font-size: 12.5px; }
.mail-row .subj {
  color: var(--text-2);
  font-size: 12px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.mail-row .subj b { color: var(--text); font-weight: 500; }
.mail-row .time { font-size: 11px; color: var(--text-3); align-self: start; padding-top: 2px; }
.mail-row.is-unread { background: color-mix(in srgb, var(--accent-soft) 60%, transparent); }
.mail-row.is-unread .who::after {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-left: 6px;
  border-radius: 50%;
  background: var(--accent);
  vertical-align: middle;
}
.mail-row .attach {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: 5px;
  padding: 3px 8px;
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  font-size: 10.5px;
  color: var(--text-2);
  background: var(--surface);
}
.mail-row .attach .icon { width: 11px; height: 11px; }

/* Hero visual wrapper with floating storage card */
.hero-visual { position: relative; }
.float-card {
  position: absolute;
  z-index: 2;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-lg);
  padding: 14px 16px;
  animation: float 7s ease-in-out infinite;
}
.float-card.storage-card { left: -34px; bottom: -28px; width: 196px; }
.storage-card .big {
  font-family: var(--font-display);
  font-size: 30px;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1;
}
.storage-card .label { font-size: 12px; color: var(--text-2); margin-top: 4px; }
.storage-card .meter { margin-top: 12px; }
.storage-card .row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
  color: var(--accent);
}
.storage-card .row .icon { width: 18px; height: 18px; }
.storage-card .row small {
  margin-left: auto;
  font-size: 10.5px;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: var(--r-pill);
  background: var(--accent-soft-2);
  color: var(--accent-2);
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

/* ---------- Benefits strip ---------- */
.strip {
  border-block: 1px solid var(--border);
  background: var(--bg-elev);
}
.strip-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}
.strip-item {
  display: flex;
  gap: 14px;
  padding: var(--space-6) var(--space-5);
  border-left: 1px solid var(--border);
}
.strip-item:first-child { border-left: 0; padding-left: 0; }
.strip-icon {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  flex-shrink: 0;
  border-radius: var(--r-md);
  background: var(--accent-soft);
  color: var(--accent);
}
.strip-item h3 { font-size: 1.05rem; letter-spacing: -0.015em; }
.strip-item p { margin-top: 4px; font-size: var(--fs-sm); color: var(--text-2); line-height: 1.5; }

/* ---------- Feature cards ---------- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
}
.card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: var(--space-6);
  transition: border-color var(--t-med) var(--ease), transform var(--t-med) var(--ease),
    box-shadow var(--t-med) var(--ease);
}
.feature-card:hover {
  border-color: var(--border-strong);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}
.feature-card .num {
  position: absolute;
  top: var(--space-6);
  right: var(--space-6);
  font-family: var(--font-display);
  font-size: var(--fs-xs);
  font-weight: 600;
  color: var(--text-3);
}
.feature-icon {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: var(--r-md);
  background: var(--surface-2);
  color: var(--text);
  margin-bottom: var(--space-6);
  transition: background-color var(--t-med), color var(--t-med), transform var(--t-med) var(--ease);
}
.feature-card:hover .feature-icon { background: var(--accent); color: var(--on-accent); transform: rotate(-4deg); }
.card h3 { font-size: var(--fs-xl); letter-spacing: -0.02em; }
.card p { margin-top: var(--space-3); color: var(--text-2); font-size: var(--fs-sm); line-height: 1.6; }

/* Highlight cards (address + storage) span wider */
.feature-card--wide { grid-column: span 2; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: var(--space-6); align-items: end; }
.feature-card--accent {
  background: linear-gradient(160deg, var(--accent) 0%, color-mix(in srgb, var(--accent) 70%, var(--accent-2)) 100%);
  border-color: transparent;
  color: #fff;
}
.feature-card--accent p { color: rgba(255, 255, 255, 0.82); }
.feature-card--accent .num { color: rgba(255, 255, 255, 0.6); }
.feature-card--accent .feature-icon,
.feature-card--accent:hover .feature-icon { background: rgba(255, 255, 255, 0.16); color: #fff; }
.feature-card--accent .giant {
  font-family: var(--font-display);
  font-size: clamp(3rem, 2rem + 3vw, 4.25rem);
  font-weight: 700;
  letter-spacing: -0.05em;
  line-height: 0.9;
  margin-bottom: var(--space-3);
}

.address-try {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: var(--space-4);
}
.address-try label { display: block; font-size: var(--fs-xs); font-weight: 600; color: var(--text-2); margin-bottom: 8px; }
.address-try-field {
  display: flex;
  align-items: center;
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--r-sm);
  overflow: hidden;
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
}
.address-try-field:focus-within { border-color: var(--accent); box-shadow: 0 0 0 4px var(--accent-soft); }
.address-try-field input {
  flex: 1;
  width: 100%;
  min-width: 0;
  border: 0;
  background: transparent;
  padding: 0.7rem 0.8rem;
  font-weight: 600;
  outline: none;
}
.address-try-field span {
  padding: 0 0.8rem;
  color: var(--text-3);
  font-weight: 600;
  font-size: var(--fs-sm);
}
.address-try output {
  display: block;
  margin-top: 12px;
  font-size: 1.15rem;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ---------- Showcase ---------- */
.showcase { background: var(--bg-elev); border-block: 1px solid var(--border); overflow: hidden; }
.showcase-stage { position: relative; max-width: 1040px; margin-inline: auto; }
.showcase .mock-body { grid-template-columns: 190px minmax(0, 1fr) minmax(0, 1.15fr); min-height: 460px; }
.showcase .mock-list { border-right: 1px solid var(--border); }
.mock-preview { padding: 22px 26px; display: flex; flex-direction: column; gap: 14px; }
.mock-preview h5 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 19px;
  letter-spacing: -0.02em;
  line-height: 1.25;
}
.preview-from { display: flex; align-items: center; gap: 10px; font-size: 12px; color: var(--text-2); }
.preview-from b { display: block; color: var(--text); font-size: 13px; }
.preview-text { color: var(--text-2); font-size: 13px; line-height: 1.65; }
.preview-text p + p { margin-top: 10px; }
.preview-files { display: flex; gap: 8px; flex-wrap: wrap; }
.file-chip {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  font-size: 12px;
  background: var(--surface-2);
}
.file-chip .icon { width: 18px; height: 18px; color: var(--accent); }
.file-chip small { display: block; color: var(--text-3); font-size: 10.5px; }
.preview-reply {
  margin-top: auto;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  color: var(--text-3);
  font-size: 12px;
}
.preview-reply .icon { width: 14px; height: 14px; }

.show-float {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 600;
  font-size: 15px;
}
.show-float .fi {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: var(--r-md);
  background: var(--accent-soft);
  color: var(--accent);
}
.show-float small { display: block; font-size: 11.5px; font-weight: 500; color: var(--text-3); }
.show-float--a { top: 46%; left: -48px; animation-delay: -2s; }
.show-float--b { bottom: 12%; right: -40px; animation-delay: -4.5s; }
.show-float--b .fi { background: var(--accent-soft-2); color: var(--accent-2); }

/* ---------- Steps ---------- */
.steps {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: step;
}
.steps::before {
  content: "";
  position: absolute;
  top: 27px;
  left: 28px;
  right: 28px;
  height: 2px;
  background: repeating-linear-gradient(90deg, var(--border-strong) 0 6px, transparent 6px 12px);
}
.step { position: relative; }
.step-num {
  position: relative;
  display: grid;
  place-items: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--border-strong);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  margin-bottom: var(--space-5);
}
.step:first-child .step-num { border-color: var(--accent); color: var(--accent); }
.step-body {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: var(--space-6);
}
.step-body h3 { font-size: var(--fs-xl); }
.step-body p { margin-top: var(--space-3); color: var(--text-2); font-size: var(--fs-sm); }
.step-body code, .card code, .faq-panel code {
  font-family: var(--font-body);
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 0.1em 0.4em;
  border-radius: 6px;
  font-size: 0.95em;
}

/* ---------- Storage ---------- */
.storage-section { position: relative; overflow: hidden; }
.storage-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2.5rem, 2rem + 4vw, 6rem);
  align-items: center;
}
.storage-copy h2 { font-size: var(--fs-2xl); }
.storage-copy > p { margin-top: var(--space-4); font-size: var(--fs-lg); color: var(--text-2); max-width: 36ch; }
.storage-points { list-style: none; padding: 0; margin: var(--space-6) 0 0; display: grid; gap: var(--space-3); }
.storage-points li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 500;
}
.storage-points .icon { color: var(--accent); width: 20px; height: 20px; }

.free-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: var(--space-6);
  padding: 0.6rem 1rem;
  border-radius: var(--r-pill);
  background: var(--accent-soft-2);
  color: var(--accent-2);
  font-weight: 700;
  font-size: var(--fs-sm);
}
.free-tag .icon { width: 17px; height: 17px; }

.ring-wrap {
  position: relative;
  width: min(100%, 440px);
  aspect-ratio: 1;
  margin-inline: auto;
}
.ring-wrap svg { width: 100%; height: 100%; transform: rotate(-90deg); }
.ring-track { stroke: var(--ring-track); }
.ring-ticks { stroke: var(--border-strong); }
.ring-fill {
  stroke-dasharray: 1000;
  stroke-dashoffset: 1000;
  transition: stroke-dashoffset 1.8s var(--ease);
}
.ring-wrap.is-visible .ring-fill { stroke-dashoffset: 0; }
.ring-center {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  text-align: center;
}
.ring-center .value {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(3.5rem, 2.5rem + 4vw, 5.5rem);
  letter-spacing: -0.05em;
  line-height: 0.9;
}
.ring-center .value small { font-size: 0.42em; letter-spacing: -0.02em; margin-left: 4px; }
.ring-center .label { margin-top: 10px; font-weight: 600; color: var(--text-2); }
.ring-center .sub { margin-top: 4px; font-size: var(--fs-sm); color: var(--accent-2); font-weight: 600; }

/* ---------- Use cases ---------- */
.use-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
}
.use-card { padding: var(--space-5) var(--space-5) var(--space-6); }
.use-card .feature-icon { width: 44px; height: 44px; margin-bottom: var(--space-5); background: var(--accent-soft); color: var(--accent); }
.use-card h3 { font-size: 1.2rem; }

/* ---------- FAQ ---------- */
.faq-layout {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: clamp(2rem, 1rem + 4vw, 5rem);
  align-items: start;
}
.faq-layout .section-head { margin-bottom: 0; position: sticky; top: 110px; }
.faq-list { border-top: 1px solid var(--border); }
.faq-item { border-bottom: 1px solid var(--border); }
.faq-q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: 1.35rem 0.25rem;
  background: none;
  border: 0;
  text-align: left;
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: -0.015em;
}
.faq-q:hover { color: var(--accent); }
.faq-q .chev {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  flex-shrink: 0;
  border-radius: 50%;
  border: 1px solid var(--border);
  color: var(--text-2);
  transition: transform var(--t-med) var(--ease), background-color var(--t-fast), color var(--t-fast);
}
.faq-q .chev .icon { width: 16px; height: 16px; }
.faq-q[aria-expanded="true"] .chev { transform: rotate(45deg); background: var(--accent); color: var(--on-accent); border-color: var(--accent); }
.faq-panel {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows var(--t-med) var(--ease);
}
.faq-panel > div { overflow: hidden; }
.faq-panel.is-open { grid-template-rows: 1fr; }
.faq-panel p { padding: 0 3rem 1.4rem 0.25rem; color: var(--text-2); }
.faq-panel p + p { margin-top: -0.8rem; }
.faq-panel a { color: var(--accent); font-weight: 600; }

/* ---------- Contact ---------- */
.contact-card {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: var(--space-7);
  align-items: center;
  padding: clamp(2rem, 1.5rem + 3vw, 4rem);
  border-radius: var(--r-xl);
  background: var(--surface);
  border: 1px solid var(--border);
}
.contact-card h2 { font-size: var(--fs-2xl); }
.contact-card > div > p { margin-top: var(--space-4); color: var(--text-2); font-size: var(--fs-lg); max-width: 40ch; }
.contact-box {
  padding: var(--space-6);
  border-radius: var(--r-lg);
  background: var(--surface-2);
  border: 1px solid var(--border);
}
.contact-box .fi {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: var(--r-md);
  background: var(--accent);
  color: var(--on-accent);
  margin-bottom: var(--space-5);
}
.contact-box .email-line {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 1rem + 1vw, 1.55rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  word-break: break-all;
  margin-bottom: var(--space-5);
}
.contact-box .email-line:hover { color: var(--accent); }
.contact-box small { display: block; margin-top: var(--space-4); font-size: var(--fs-xs); color: var(--text-3); }

/* ---------- Final CTA ---------- */
.final-cta {
  position: relative;
  overflow: hidden;
  border-radius: var(--r-xl);
  padding: clamp(3rem, 2rem + 5vw, 6.5rem) var(--gutter);
  text-align: center;
  background: #0a1030;
  color: #fff;
  isolation: isolate;
}
.final-cta::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(60% 80% at 50% 0%, rgba(80, 120, 255, 0.55), transparent 70%),
    radial-gradient(40% 60% at 90% 100%, rgba(40, 200, 230, 0.3), transparent 70%);
}
.final-cta .cta-address {
  display: inline-block;
  font-size: clamp(1rem, 0.8rem + 1vw, 1.25rem);
  padding: 0.5rem 1.1rem;
  border-radius: var(--r-pill);
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.06);
  color: rgba(255, 255, 255, 0.85);
}
.final-cta .cta-address .at {
  background: linear-gradient(120deg, #9db5ff, #6fe4f3);
  -webkit-background-clip: text;
  background-clip: text;
}
.final-cta h2 {
  margin: 0 auto;
  font-size: var(--fs-3xl);
  letter-spacing: -0.04em;
  max-width: 20ch;
}
.final-cta p { margin: var(--space-5) auto 0; font-size: var(--fs-lg); color: rgba(255, 255, 255, 0.75); max-width: 42ch; }
.final-cta .hero-actions { justify-content: center; }
.final-cta .btn-primary { background: #fff; color: #0a1030; box-shadow: none; }
.final-cta .btn-primary:hover { background: #e7ecff; }
.final-cta .btn-secondary { background: transparent; color: #fff; border-color: rgba(255, 255, 255, 0.3); }
.final-cta .btn-secondary:hover { background: rgba(255, 255, 255, 0.08); border-color: rgba(255, 255, 255, 0.5); }
.final-cta .contact-note { margin-top: var(--space-5); font-size: var(--fs-sm); color: rgba(255, 255, 255, 0.6); }
.final-cta .contact-note a { color: #fff; font-weight: 600; text-decoration: underline; text-underline-offset: 3px; }

/* ---------- Footer ---------- */
.footer { border-top: 1px solid var(--border); padding-block: var(--space-8) var(--space-6); margin-top: var(--section-y); }
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: var(--space-7);
}
.footer-brand p { margin-top: var(--space-4); color: var(--text-2); max-width: 30ch; }
.footer h4 { font-family: var(--font-body); font-size: var(--fs-sm); font-weight: 600; color: var(--text-3); margin-bottom: var(--space-4); letter-spacing: 0; }
.footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.6rem; }
.footer ul a { color: var(--text-2); font-size: var(--fs-sm); transition: color var(--t-fast); }
.footer ul a:hover { color: var(--accent); }
.footer-mail { font-weight: 600; color: var(--text); font-size: var(--fs-sm); }
.footer-mail:hover { color: var(--accent); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: var(--space-4);
  flex-wrap: wrap;
  margin-top: var(--space-8);
  padding-top: var(--space-5);
  border-top: 1px solid var(--border);
  font-size: var(--fs-xs);
  color: var(--text-3);
}

/* ---------- Modal ---------- */
.modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: center;
  padding: var(--gutter);
  visibility: hidden;
  opacity: 0;
  transition: opacity var(--t-med) var(--ease), visibility 0s linear var(--t-med);
}
.modal.is-open { visibility: visible; opacity: 1; transition: opacity var(--t-med) var(--ease); }
.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(6, 9, 18, 0.55);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}
.modal-dialog {
  position: relative;
  width: min(100%, 460px);
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--r-xl);
  box-shadow: var(--shadow-lg);
  padding: clamp(1.75rem, 1.4rem + 1.5vw, 2.5rem);
  text-align: center;
  transform: translateY(14px) scale(0.98);
  transition: transform var(--t-med) var(--ease);
}
.modal.is-open .modal-dialog { transform: none; }
.modal-close { position: absolute; top: 14px; right: 14px; width: 36px; height: 36px; }
.modal-close .icon { width: 18px; height: 18px; }
.modal-icon {
  display: grid;
  place-items: center;
  width: 64px;
  height: 64px;
  margin: 0 auto var(--space-5);
  border-radius: 20px;
  background: var(--accent-soft);
  color: var(--accent);
}
.modal-icon .icon { width: 28px; height: 28px; }
.modal h2 { font-size: 1.6rem; letter-spacing: -0.025em; }
.modal p { margin-top: var(--space-3); color: var(--text-2); font-size: var(--fs-sm); line-height: 1.65; }
.modal-mail {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin: var(--space-5) 0;
  padding: 0.8rem 1rem;
  border-radius: var(--r-md);
  background: var(--surface-2);
  border: 1px dashed var(--border-strong);
  font-weight: 600;
  word-break: break-all;
}
.modal-mail .icon { width: 16px; height: 16px; color: var(--accent); }
.modal-actions { display: grid; gap: var(--space-2); }
.modal-note { margin-top: var(--space-4) !important; font-size: var(--fs-xs) !important; color: var(--text-3) !important; }

/* ---------- Auth pages ---------- */
.auth-page { min-height: 100vh; display: flex; flex-direction: column; }
.auth-page .footer { margin-top: 0; padding-block: var(--space-5); }
.auth-page .footer-bottom { margin-top: 0; padding-top: 0; border-top: 0; }
.auth-header { display: flex; justify-content: space-between; align-items: center; height: 76px; }
.auth-main {
  flex: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 1rem + 4vw, 5rem);
  align-items: center;
  padding-block: var(--space-6) var(--space-8);
}
.auth-aside {
  position: relative;
  align-self: stretch;
  border-radius: var(--r-xl);
  padding: clamp(2rem, 1.5rem + 2vw, 3rem);
  background: #0a1030;
  color: #fff;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 560px;
  isolation: isolate;
}
.auth-aside::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(70% 60% at 20% 0%, rgba(80, 120, 255, 0.5), transparent 70%),
    radial-gradient(50% 50% at 100% 100%, rgba(40, 200, 230, 0.28), transparent 70%);
}
.auth-aside h2 { font-size: clamp(2rem, 1.4rem + 2vw, 2.75rem); letter-spacing: -0.035em; max-width: 13ch; }
.auth-aside p { margin-top: var(--space-4); color: rgba(255, 255, 255, 0.72); max-width: 34ch; }
.aside-address {
  font-size: clamp(1.6rem, 1rem + 2.4vw, 2.6rem);
  line-height: 1.1;
  word-break: break-all;
  white-space: normal;
}
.aside-address .at {
  background: linear-gradient(120deg, #9db5ff, #6fe4f3);
  -webkit-background-clip: text;
  background-clip: text;
}
.aside-stats { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-3); margin-top: var(--space-6); }
.aside-stat {
  padding: var(--space-4);
  border-radius: var(--r-md);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
}
.aside-stat b { display: block; font-family: var(--font-display); font-size: 1.5rem; letter-spacing: -0.03em; }
.aside-stat span { font-size: var(--fs-xs); color: rgba(255, 255, 255, 0.65); }

.auth-form-wrap { width: 100%; max-width: 460px; margin-inline: auto; }
.auth-form-wrap h1 { font-size: clamp(2rem, 1.5rem + 2vw, 2.75rem); letter-spacing: -0.035em; }
.auth-form-wrap > p { margin-top: var(--space-3); color: var(--text-2); }

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: var(--space-5);
  padding: 0.35rem 0.85rem;
  border-radius: var(--r-pill);
  font-size: var(--fs-xs);
  font-weight: 600;
  background: var(--surface-2);
  color: var(--text-2);
  border: 1px solid var(--border);
}
.status-pill i { width: 7px; height: 7px; border-radius: 50%; background: #e5a53a; }

.form { display: grid; gap: var(--space-5); margin-top: var(--space-6); }
.field { display: grid; gap: 8px; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-4); }
.field label { font-size: var(--fs-sm); font-weight: 600; }
.field-top { display: flex; justify-content: space-between; align-items: baseline; }
.field-top a { font-size: var(--fs-sm); font-weight: 600; color: var(--accent); }
.field-top a:hover { text-decoration: underline; text-underline-offset: 3px; }

.input,
.select {
  width: 100%;
  min-height: 50px;
  padding: 0 1rem;
  border-radius: var(--r-md);
  border: 1px solid var(--border-strong);
  background: var(--surface);
  outline: none;
  transition: border-color var(--t-fast), box-shadow var(--t-fast), background-color var(--t-fast);
}
.input::placeholder { color: var(--text-3); }
.input:hover, .select:hover { border-color: var(--text-3); }
.input:focus, .select:focus { border-color: var(--accent); box-shadow: 0 0 0 4px var(--accent-soft); }
.select {
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='none' stroke='%23858ea3' stroke-width='2' stroke-linecap='round' stroke-linejoin='round' viewBox='0 0 24 24'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
}

.input-group {
  display: flex;
  align-items: stretch;
  border-radius: var(--r-md);
  border: 1px solid var(--border-strong);
  background: var(--surface);
  overflow: hidden;
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
}
.input-group:hover { border-color: var(--text-3); }
.input-group:focus-within { border-color: var(--accent); box-shadow: 0 0 0 4px var(--accent-soft); }
.input-group .input { border: 0; box-shadow: none; border-radius: 0; min-width: 0; }
.input-suffix {
  display: flex;
  align-items: center;
  padding: 0 1rem;
  background: var(--surface-2);
  border-left: 1px solid var(--border);
  color: var(--text-2);
  font-weight: 600;
  font-size: var(--fs-sm);
  white-space: nowrap;
}
.pw-toggle {
  display: grid;
  place-items: center;
  width: 48px;
  border: 0;
  background: transparent;
  color: var(--text-3);
}
.pw-toggle:hover { color: var(--text); }
.pw-toggle .icon { width: 18px; height: 18px; }

.address-preview {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0.75rem 1rem;
  border-radius: var(--r-md);
  background: var(--accent-soft);
  font-size: var(--fs-sm);
  color: var(--text-2);
  min-width: 0;
}
.address-preview .icon { width: 16px; height: 16px; color: var(--accent); }
.address-preview output { font-size: 1rem; color: var(--text); overflow: hidden; text-overflow: ellipsis; }
.hint { font-size: var(--fs-xs); color: var(--text-3); }
.hint.is-error { color: #d9433d; }
[data-theme="dark"] .hint.is-error { color: #ff7b72; }

.check {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: var(--fs-sm);
  color: var(--text-2);
  cursor: pointer;
}
.check input {
  appearance: none;
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  margin: 1px 0 0;
  border: 1.5px solid var(--border-strong);
  border-radius: 6px;
  background: var(--surface);
  display: grid;
  place-items: center;
  cursor: pointer;
  transition: background-color var(--t-fast), border-color var(--t-fast);
}
.check input::after {
  content: "";
  width: 10px;
  height: 6px;
  border-left: 2px solid var(--on-accent);
  border-bottom: 2px solid var(--on-accent);
  transform: rotate(-45deg) translate(1px, -1px) scale(0);
  transition: transform var(--t-fast) var(--ease);
}
.check input:checked { background: var(--accent); border-color: var(--accent); }
.check input:checked::after { transform: rotate(-45deg) translate(1px, -1px) scale(1); }
.check a { color: var(--accent); font-weight: 600; }

.form-foot { text-align: center; font-size: var(--fs-sm); color: var(--text-2); }
.form-foot a { color: var(--accent); font-weight: 600; }

.divider-note {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: var(--space-4);
  border-radius: var(--r-md);
  border: 1px solid var(--border);
  background: var(--surface);
  font-size: var(--fs-xs);
  color: var(--text-2);
  line-height: 1.55;
}
.divider-note .icon { width: 16px; height: 16px; color: var(--text-3); margin-top: 1px; }

/* ---------- Reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
.reveal.is-visible { opacity: 1; transform: none; }
.no-js .reveal { opacity: 1; transform: none; }

/* =========================================================
   Responsive
   ========================================================= */

/* ≤1024px — laptop / small laptop */
@media (max-width: 1080px) {
  .nav-links a { padding: 0.5rem 0.7rem; }
  .hero-grid { grid-template-columns: 1fr; }
  .hero-copy { max-width: 640px; }
  .hero-visual { max-width: 720px; }
  .float-card.storage-card { left: auto; right: -12px; bottom: -30px; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-card--wide { grid-column: span 2; }
  .use-grid { grid-template-columns: repeat(2, 1fr); }
  .strip-grid { grid-template-columns: repeat(2, 1fr); }
  .strip-item:nth-child(3) { border-left: 0; padding-left: 0; }
  .strip-item:nth-child(n + 3) { border-top: 1px solid var(--border); }
  .showcase .mock-body { grid-template-columns: 170px minmax(0, 1fr) minmax(0, 1fr); }
  .show-float--a { left: -12px; }
  .show-float--b { right: -12px; }
}

/* ≤900px — tablet */
@media (max-width: 900px) {
  .nav-links, .nav-actions .btn { display: none; }
  .nav-burger { display: inline-grid; }
  .mobile-menu { display: block; pointer-events: none; }
  .mobile-menu.is-open { pointer-events: auto; }

  .showcase .mock-body { grid-template-columns: 1fr 1fr; }
  .showcase .mock-side { display: none; }
  .storage-grid { grid-template-columns: 1fr; }
  .storage-copy { text-align: center; }
  .storage-copy > p { margin-inline: auto; }
  .storage-points { justify-content: center; }
  .faq-layout { grid-template-columns: 1fr; }
  .faq-layout .section-head { position: static; }
  .contact-card { grid-template-columns: 1fr; gap: var(--space-6); }
  .steps { grid-template-columns: 1fr; gap: var(--space-5); }
  .steps::before {
    top: 28px; bottom: 28px; left: 27px; right: auto;
    width: 2px; height: auto;
    background: repeating-linear-gradient(180deg, var(--border-strong) 0 6px, transparent 6px 12px);
  }
  .step { display: grid; grid-template-columns: 56px 1fr; gap: var(--space-4); }
  .step-num { margin-bottom: 0; }

  .auth-main { grid-template-columns: 1fr; }
  .auth-aside { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}

/* ≤640px — mobile */
@media (max-width: 640px) {
  :root { --fs-base: 1rem; }
  .nav-inner { height: 64px; }
  .mobile-menu { inset: 64px 0 0 0; }
  html { scroll-padding-top: 76px; }

  .hero { padding-top: var(--space-6); }
  .hero h1 { font-size: clamp(2.5rem, 1.5rem + 7vw, 3.25rem); }
  .hero-actions .btn { flex: 1 1 100%; }
  .hero-meta { font-size: var(--fs-xs); }

  .mock-body { grid-template-columns: 1fr; min-height: 0; }
  .mock-side { display: none; }
  .mock-user span { display: none; }
  .mock-url { max-width: none; }
  .mail-row { padding: 10px 14px; gap: 10px; }
  .float-card.storage-card { position: relative; right: auto; bottom: auto; left: auto; width: auto; margin: -24px 16px 0; animation: none; }

  .strip-grid { grid-template-columns: 1fr; }
  .strip-item, .strip-item:first-child, .strip-item:nth-child(3) { border-left: 0; padding: var(--space-5) 0; }
  .strip-item:nth-child(n + 2) { border-top: 1px solid var(--border); }

  .feature-grid, .use-grid { grid-template-columns: minmax(0, 1fr); }
  .feature-card--wide { grid-column: auto; grid-template-columns: minmax(0, 1fr); }
  .card { padding: var(--space-5); }
  .feature-card .num { top: var(--space-5); right: var(--space-5); }
  .section-head { margin-bottom: var(--space-7); }

  .showcase .mock-body { grid-template-columns: 1fr; }
  .showcase .mock-list { border-right: 0; border-bottom: 1px solid var(--border); }
  .showcase .mock-list .mail-row:nth-of-type(n + 4) { display: none; }
  .show-float { position: relative; inset: auto; animation: none; margin-top: var(--space-3); }
  .show-floats { display: grid; grid-template-columns: 1fr; gap: 0; }

  .ring-wrap { width: min(100%, 320px); }
  .contact-box { padding: var(--space-5); }
  .final-cta { border-radius: var(--r-lg); }
  .final-cta .hero-actions .btn { flex: 1 1 100%; }
  .faq-q { font-size: 1.05rem; }
  .faq-panel p { padding-right: 0.25rem; }

  .field-row { grid-template-columns: 1fr; }
  .input-suffix { padding: 0 0.75rem; font-size: var(--fs-xs); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: var(--space-6); }
  .footer-bottom { flex-direction: column; }
}

/* Floating showcase cards: only absolute on wide screens */
@media (min-width: 641px) {
  .show-floats { position: absolute; inset: 0; pointer-events: none; }
  .show-float { position: absolute; }
}

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