/* ────────────────────────────────────────────────────────────
   Fam marketing site — uses the same design language as the
   a2ui-h5 device shell. See design-spec.md for the rationale.
   ──────────────────────────────────────────────────────────── */

:root {
  color-scheme: light;

  /* Surfaces */
  --paper:    #f5efe6;
  --paper-2:  #efe7da;
  --card:     #fffefb;
  --card-warm:#faf3e7;

  /* Ink */
  --ink:    #2a2620;
  --ink-2:  #5c544a;
  --ink-3:  #968b7c;

  /* Lines */
  --line:   #e8dfd0;
  --line-2: #dcd0bc;

  /* Accents */
  --terra:      #c8775a;  --terra-soft: #f0d5c7;
  --moss:       #6b8a6e;  --moss-soft:  #d4ddc9;
  --sky:        #6b8fa8;  --sky-soft:   #cfdce5;
  --honey:      #d4a55a;  --honey-soft: #f2e2c2;
  --plum:       #8e6b8a;  --plum-soft:  #e2d2df;

  /* Members */
  --mom: #c8775a;
  --dad: #6b8fa8;
  --xiaoman: #d4a55a;
  --xiaochuan: #6b8a6e;
  --family: #8e6b8a;

  /* Night */
  --night-bg:      #1a1812;
  --night-bg-deep: #0f0e0a;
  --night-ink:     #e8dfd0;
  --night-glow:    #d4a55a;

  /* Child */
  --child-bg-1: #fff6e6;
  --child-bg-2: #ffedd0;
  --child-ink:  #4a3a1f;

  /* Shadows */
  --shadow:      0 1px 0 rgba(255,255,255,.7) inset, 0 18px 42px rgba(42,38,32,.14);
  --shadow-soft: 0 1px 2px rgba(42,38,32,.04), 0 8px 24px rgba(42,38,32,.06);

  /* Type */
  --serif: "Source Serif 4", "Songti SC", "STSong", Georgia, serif;
  --sans:  -apple-system, BlinkMacSystemFont, "SF Pro Display", "PingFang SC",
           "Helvetica Neue", Arial, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--sans);
  color: var(--ink);
  background: var(--paper);
  font-size: 17px;
  line-height: 1.47;
  letter-spacing: -0.01em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button { font: inherit; }

/* ────── Type ────── */

.v-display { font-family: var(--serif); font-size: 84px; line-height: 0.96; font-weight: 400; letter-spacing: -0.02em; }
.v-h1      { font-family: var(--serif); font-size: 56px; line-height: 1.02; font-weight: 400; letter-spacing: -0.02em; margin: 0; }
.v-h2      { font-family: var(--serif); font-size: 36px; line-height: 1.08; font-weight: 500; letter-spacing: -0.02em; margin: 0; }
.v-h3      { font-size: 26px; font-weight: 500; line-height: 1.2; margin: 0; }
.v-title   { font-size: 22px; font-weight: 500; line-height: 1.2; margin: 0; }
.v-body    { font-size: 17px; line-height: 1.55; }
.v-lead    { font-size: 21px; line-height: 1.5; color: var(--ink-2); }
.v-small   { font-size: 14px; }
.v-caption { font-size: 12px; color: var(--ink-3); }
.v-eyebrow {
  font-size: 12px; font-weight: 500;
  text-transform: uppercase; letter-spacing: 0.18em;
  color: var(--ink-3);
  margin: 0 0 14px;
}

.font-serif { font-family: var(--serif); }
.tabular    { font-variant-numeric: tabular-nums; }
.ta-center  { text-align: center; }
.ta-left    { text-align: left; }

.c-default   { color: var(--ink); }
.c-secondary { color: var(--ink-2); }
.c-muted     { color: var(--ink-3); }
.c-terra     { color: var(--terra); }
.c-moss      { color: var(--moss); }
.c-sky       { color: var(--sky); }
.c-honey     { color: var(--honey); }
.c-plum      { color: var(--plum); }
.c-paper     { color: var(--paper); }
.c-night-ink { color: var(--night-ink); }
.c-night-glow{ color: var(--night-glow); }

.bg-paper    { background: var(--paper); }
.bg-paper-2  { background: var(--paper-2); }
.bg-card     { background: var(--card); }
.bg-card-warm{ background: var(--card-warm); }
.bg-night    { background: var(--night-bg); color: var(--night-ink); }
.bg-night-deep { background: var(--night-bg-deep); color: var(--night-ink); }
.bg-child {
  background: linear-gradient(180deg, var(--child-bg-1), var(--child-bg-2));
  color: var(--child-ink);
}

/* ────── Layout primitives ────── */

.a-stack { display: flex; flex-direction: column; min-width: 0; }
.a-stack.h { flex-direction: row; }
.a-stack.wrap { flex-wrap: wrap; }
.a-stack.align-center { align-items: center; }
.a-stack.align-start  { align-items: flex-start; }
.a-stack.align-end    { align-items: flex-end; }
.a-stack.just-center  { justify-content: center; }
.a-stack.just-between { justify-content: space-between; }
.a-stack.just-end     { justify-content: flex-end; }
.gap-4  { gap: 4px; }
.gap-6  { gap: 6px; }
.gap-8  { gap: 8px; }
.gap-12 { gap: 12px; }
.gap-16 { gap: 16px; }
.gap-20 { gap: 20px; }
.gap-24 { gap: 24px; }
.gap-32 { gap: 32px; }

.a-divider { border: 0; border-top: 1px solid var(--line); margin: 0; }
.dotted-divider {
  height: 1px;
  background-image: linear-gradient(to right, var(--line-2) 50%, transparent 0);
  background-size: 8px 1px;
  background-repeat: repeat-x;
}

/* ────── Section ────── */

.section {
  padding: 96px 22px;
}
.section-inner { max-width: 1024px; margin: 0 auto; }
.section.tight { padding: 64px 22px; }
.section.dark  { background: var(--night-bg); color: var(--night-ink); }
.section.deep  { background: var(--night-bg-deep); color: var(--night-ink); }
.section.warm  { background: var(--paper-2); }
.section.child { background: linear-gradient(180deg, var(--child-bg-1), var(--child-bg-2)); color: var(--child-ink); }
.section.dark .v-eyebrow,
.section.deep .v-eyebrow { color: rgba(232,223,208,0.55); }
.section.dark .v-lead,
.section.deep .v-lead { color: rgba(232,223,208,0.7); }

/* ────── Card ────── */

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 24px;
}
.card.warm   { background: var(--card-warm); border-color: var(--line-2); }
.card.dashed { border-style: dashed; border-color: var(--line-2); background: transparent; }
.card.lg     { padding: 32px; border-radius: 24px; }
.section.dark .card,
.section.deep .card {
  background: rgba(232,223,208,0.05);
  border-color: rgba(232,223,208,0.12);
  color: var(--night-ink);
}

/* ────── Buttons / chips / badges ────── */

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 22px;
  border: 1px solid var(--line-2);
  border-radius: 999px;
  background: var(--card);
  color: var(--ink);
  font-size: 15px;
  cursor: pointer;
  transition: transform .12s ease, box-shadow .12s ease;
}
.btn:hover { box-shadow: var(--shadow-soft); }
.btn.primary { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.btn.primary:hover { background: #1d1a16; }
.btn.terra   { background: var(--terra); color: #fff; border-color: var(--terra); }
.btn.moss    { background: var(--moss); color: #fff; border-color: var(--moss); }
.btn.lg      { padding: 14px 26px; font-size: 16px; }
.btn-link {
  display: inline-flex; align-items: center; gap: 6px;
  color: var(--terra); font-size: 15px;
}
.btn-link::after { content: "→"; transition: transform .15s ease; }
.btn-link:hover::after { transform: translateX(3px); }
.section.dark .btn,
.section.deep .btn {
  background: rgba(232,223,208,0.08);
  border-color: rgba(232,223,208,0.18);
  color: var(--night-ink);
}
.section.dark .btn.primary,
.section.deep .btn.primary {
  background: var(--paper); color: var(--ink); border-color: var(--paper);
}
.section.dark .btn-link,
.section.deep .btn-link { color: var(--night-glow); }

.chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 12px;
  border-radius: 999px;
  background: var(--paper-2);
  color: var(--ink-2);
  font-size: 13px;
  white-space: nowrap;
}
.chip.terra   { background: var(--terra-soft); color: var(--terra); }
.chip.moss    { background: var(--moss-soft);  color: var(--moss); }
.chip.honey   { background: var(--honey-soft); color: var(--honey); }
.chip.sky     { background: var(--sky-soft);   color: var(--sky); }
.chip.plum    { background: var(--plum-soft);  color: var(--plum); }
.chip.outline { background: transparent; border: 1px solid var(--line); }

.a-badge {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 12px; font-weight: 500;
  background: var(--paper-2);
  color: var(--ink-2);
}

/* ────── Member dots / pills ────── */

.mdot { width: 10px; height: 10px; border-radius: 50%; display: inline-block; flex-shrink: 0; }
.mdot.mom { background: var(--mom); }
.mdot.dad { background: var(--dad); }
.mdot.xm  { background: var(--xiaoman); }
.mdot.xc  { background: var(--xiaochuan); }
.mdot.all { background: var(--family); }
.mdot.lg  { width: 14px; height: 14px; }

.member-pill {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 10px 4px 8px;
  background: rgba(255,255,255,0.6);
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 13px;
}
.member-pill .mdot { width: 8px; height: 8px; }
.section.dark .member-pill,
.section.deep .member-pill {
  background: rgba(232,223,208,0.05);
  border-color: rgba(232,223,208,0.15);
  color: var(--night-ink);
}

/* ────── Brand mark (matches device fam-mark) ────── */

.fam-mark {
  width: 26px; height: 26px;
  position: relative; display: inline-block;
}
.fam-mark::before, .fam-mark::after {
  content: ""; position: absolute; border-radius: 50%;
}
.fam-mark::before { inset: 0; border: 1.5px solid currentColor; opacity: 0.65; }
.fam-mark::after  { width: 9px; height: 9px; background: var(--terra); top: 4px; right: 4px; }
.fam-mark.sm { width: 18px; height: 18px; }
.fam-mark.sm::after { width: 6px; height: 6px; top: 3px; right: 3px; }

/* ────── Top nav ────── */

.top-nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(245,239,230,0.85);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--line);
}
.top-nav-inner {
  max-width: 1024px; margin: 0 auto;
  padding: 14px 22px;
  display: flex; align-items: center; justify-content: space-between;
}
.top-nav .brand {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--serif); font-size: 22px; font-weight: 500;
  letter-spacing: -0.01em;
}
.top-nav nav { display: flex; gap: 4px; }
.top-nav nav a {
  padding: 6px 12px; border-radius: 999px;
  color: var(--ink-2); font-size: 13px;
  transition: background .12s ease, color .12s ease;
}
.top-nav nav a:hover { background: rgba(255,255,255,0.6); color: var(--ink); }
.top-nav nav a.buy { background: var(--ink); color: var(--paper); padding: 6px 16px; }
.top-nav nav a.buy:hover { background: #1d1a16; color: var(--paper); }

/* ────── 账号入口（顶部 nav 右侧）────── */
.account-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
}
.account-nav a {
  padding: 6px 14px;
  border-radius: 999px;
  transition: background .12s ease, color .12s ease, border-color .12s ease;
  white-space: nowrap;
}
.account-nav a.signin {
  color: var(--ink-2);
  border: 1px solid transparent;
}
.account-nav a.signin:hover { background: rgba(255,255,255,0.6); color: var(--ink); }
.account-nav a.signup {
  background: var(--ink);
  color: var(--paper);
  font-weight: 500;
}
.account-nav a.signup:hover { background: #1d1a16; }
.account-nav .account-mail {
  font-size: 12px;
  color: var(--ink-3);
  margin-right: 4px;
  font-variant-numeric: tabular-nums;
  max-width: 160px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* 移动端 nav 折叠时账号区也变紧凑 */
@media (max-width: 720px) {
  .account-nav .account-mail { display: none; }
  .account-nav a { padding: 5px 10px; font-size: 12px; }
}

/* ────── Hero ────── */

.hero {
  padding: 80px 22px 48px;
  text-align: center;
  background: var(--paper);
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image:
    radial-gradient(circle at 20% 10%, rgba(200,119,90,0.06), transparent 40%),
    radial-gradient(circle at 80% 90%, rgba(107,143,168,0.05), transparent 40%);
}
.hero > * { position: relative; }
.hero h1 { margin: 0 auto 18px; max-width: 18ch; }
.hero p.sub {
  max-width: 580px; margin: 0 auto 32px;
  color: var(--ink-2); font-size: 19px; line-height: 1.55;
}
.hero-ctas { display: inline-flex; align-items: center; gap: 18px; flex-wrap: wrap; justify-content: center; }

/* Device frame mock */
.device-frame {
  margin: 64px auto 0;
  max-width: 920px;
  padding: 18px;
  background: #161513;
  border-radius: 28px;
  box-shadow: 0 24px 80px rgba(28,24,18,0.28);
}
.device-screen {
  border-radius: 18px;
  overflow: hidden;
  background: var(--paper);
  aspect-ratio: 4 / 3;
  /* 让 statusbar + 主体（cal-mock / mock-body / kid-mock 等）按 flex 列堆，
     主体可以 flex:1 占剩余高度，避免子元素 height:100% 把 statusbar 顶出去。 */
  display: flex;
  flex-direction: column;
}

/* ────── Mock screen contents ────── */

.mock-statusbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 28px 0;
  font-size: 14px; color: var(--ink-2);
}
.mock-statusbar .left  { display: flex; align-items: center; gap: 12px; }
.mock-statusbar .right { display: flex; align-items: center; gap: 8px; }
.mock-statusbar .sb-time { font-size: 16px; font-weight: 500; color: var(--ink); }

.mock-body {
  padding: 18px 28px 24px;
  display: grid; gap: 14px;
  grid-template-columns: 1fr 1fr;
  height: calc(100% - 36px);
}
.mock-body .span-2 { grid-column: 1 / -1; }
.mock-body .card { padding: 16px 18px; }
.mock-body h4 {
  margin: 0 0 8px;
  font-size: 11px; font-weight: 500;
  text-transform: uppercase; letter-spacing: 0.15em;
  color: var(--ink-3);
}
.mock-row {
  display: flex; align-items: baseline; justify-content: space-between;
  padding: 5px 0; font-size: 13px;
  border-bottom: 1px dashed transparent;
}
.mock-row + .mock-row { border-top: 1px dashed var(--line); }
.mock-row .who { color: var(--ink-3); font-size: 12px; }
.mock-row strong { font-weight: 500; }

.voicebar-mock {
  position: absolute; left: 50%; bottom: 22px;
  transform: translateX(-50%);
  display: flex; align-items: center; gap: 12px;
  padding: 10px 18px;
  background: rgba(255,254,251,0.9);
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 13px;
  color: var(--ink-3);
  box-shadow: var(--shadow-soft);
}
.voicebar-mock .wave {
  display: inline-flex; align-items: center; gap: 3px; height: 16px;
}
.voicebar-mock .wave > span {
  display: block; width: 3px; background: var(--terra); border-radius: 2px;
}
.voicebar-mock .wave > span:nth-child(1) { height: 6px; }
.voicebar-mock .wave > span:nth-child(2) { height: 12px; }
.voicebar-mock .wave > span:nth-child(3) { height: 8px; }
.voicebar-mock .wave > span:nth-child(4) { height: 14px; }

/* Calendar mock */
.cal-mock {
  /* "今天"列拉宽到其他列的 1.4 倍——既凸显焦点，又留出空间放 4 条事件 */
  display: grid;
  grid-template-columns: 1fr 1.4fr 1fr 1fr 1fr 1fr 1fr;
  gap: 10px;
  padding: 16px 22px 22px;
  flex: 1;          /* 占满 device-screen 减去 statusbar 的剩余高度 */
  min-height: 0;    /* flex 子项必须，让内部 overflow 正确收住 */
}
.cal-mock .cal-day {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 10px 8px;
  display: flex; flex-direction: column; gap: 6px;
  font-size: 11px; min-width: 0; min-height: 0;
  overflow: hidden;     /* 单列自身做截断，不跨界把整个 cal-mock 撑大 */
}
.cal-mock .cal-day.is-today {
  background: var(--card-warm);
  border-color: var(--terra);
  border-width: 1.5px;
}
.cal-mock .cal-day-name { font-size: 10px; color: var(--ink-3); letter-spacing: 0.05em; }
.cal-mock .cal-day-date { font-size: 16px; font-weight: 300; }
.cal-mock .cal-day.is-today .cal-day-name,
.cal-mock .cal-day.is-today .cal-day-date { color: var(--terra); }
.cal-mock .cal-evt {
  background: rgba(255,255,255,0.6);
  border-left: 3px solid var(--ink-3);
  border-radius: 6px;
  padding: 4px 6px;
  font-size: 10px; line-height: 1.25;
  /* 不再 overflow:hidden + ellipsis——event 文本本来就 2 行，截断会丢时间。
     改成 word-break 让长名字换行，宽度由 grid 列决定。 */
  word-break: break-word;
}
.cal-mock .cal-evt.who-mom { border-left-color: var(--mom); }
.cal-mock .cal-evt.who-dad { border-left-color: var(--dad); }
.cal-mock .cal-evt.who-xm  { border-left-color: var(--xiaoman); }
.cal-mock .cal-evt.who-xc  { border-left-color: var(--xiaochuan); }
.cal-mock .cal-evt.who-all { border-left-color: var(--family); }

/* Kid mock (the IconBubble + facts) */
.kid-mock {
  height: 100%;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 18px;
  padding: 32px;
  background: linear-gradient(180deg, var(--child-bg-1), var(--child-bg-2));
}
.kid-bubble {
  width: 140px; height: 140px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, #ffe7a8, #ffd56b);
  display: grid; place-items: center;
  font-size: 70px;
  box-shadow: 0 12px 30px rgba(212,165,90,0.3);
}
.kid-fact {
  display: flex; align-items: center; gap: 14px;
  padding: 12px 18px;
  background: #fff;
  border-radius: 999px;
  font-size: 15px; color: var(--child-ink);
  box-shadow: 0 2px 0 rgba(0,0,0,0.05);
}
.kid-fact .num {
  width: 36px; height: 36px; border-radius: 50%;
  display: grid; place-items: center;
  color: #fff; font-weight: 700; font-size: 18px;
}
.kid-fact .num.blue { background: #9dd0e8; }
.kid-fact .num.pink { background: #ffb6a8; }
.kid-fact .num.mint { background: #b5ddb7; }

/* Memory mock */
.mem-mock {
  display: flex; flex-direction: column; gap: 0;
  padding: 18px 24px;
  height: 100%; overflow: hidden;
}
.mem-row {
  display: grid; grid-template-columns: 80px 1fr auto;
  align-items: baseline; gap: 14px;
  padding: 10px 0;
  font-size: 13px;
}
.mem-row + .mem-row { border-top: 1px solid var(--line); }
.mem-row .t { color: var(--ink-3); font-size: 12px; }
.mem-row .text { color: var(--ink); }

/* Photo frame mock */
.photo-mock {
  height: 100%;
  background:
    linear-gradient(180deg, rgba(0,0,0,0.0) 60%, rgba(0,0,0,0.55) 100%),
    url("assets/family-portrait.jpg") center/cover no-repeat,
    var(--paper-2);
  position: relative;
}
.photo-mock .meta {
  position: absolute; left: 24px; right: 24px; bottom: 22px;
  color: #fff;
  display: flex; align-items: end; justify-content: space-between; gap: 24px;
}
.photo-mock .meta strong {
  font-family: var(--serif);
  font-size: 22px; font-weight: 400; display: block;
  margin-bottom: 4px;
}
.photo-mock .meta small { opacity: 0.8; font-size: 13px; }

/* ────── Specs grid ────── */

.specs-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}
.spec {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 22px 20px;
}
.spec h4 {
  margin: 0 0 10px;
  font-size: 11px; font-weight: 500;
  text-transform: uppercase; letter-spacing: 0.15em;
  color: var(--ink-3);
}
.spec .val {
  font-family: var(--serif);
  font-size: 28px; font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--terra);
  line-height: 1.1;
}
.spec .unit { font-size: 13px; color: var(--ink-2); margin-top: 6px; line-height: 1.4; }

/* ────── In the box ────── */

.box-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.box-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 24px 20px;
  text-align: center;
}
.box-art {
  aspect-ratio: 1/1;
  border-radius: 12px;
  background:
    repeating-linear-gradient(45deg, rgba(42,38,32,0.05) 0 8px, transparent 8px 16px),
    var(--paper-2);
  display: grid; place-items: center;
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 11px; color: var(--ink-3);
  text-transform: uppercase; letter-spacing: 0.2em;
  margin-bottom: 14px;
}
.box-card h4 { margin: 0 0 4px; font-size: 16px; font-weight: 500; }
.box-card p  { margin: 0; font-size: 13px; color: var(--ink-3); }

/* ────── Buy ────── */

.buy-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; text-align: left; }
.buy-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 32px 28px;
}
.buy-card .price {
  font-family: var(--serif);
  font-size: 32px; font-weight: 500;
  color: var(--ink);
  margin-bottom: 4px;
}
.buy-card .month { font-size: 13px; color: var(--ink-3); margin-bottom: 22px; }
.buy-card h3 { margin: 0 0 6px; font-family: var(--serif); font-size: 24px; font-weight: 500; }
.buy-card .tag { margin: 0 0 22px; color: var(--ink-2); font-size: 14px; line-height: 1.45; }
.buy-card ul { list-style: none; padding: 0; margin: 0 0 24px; font-size: 14px; }
.buy-card li {
  display: flex; justify-content: space-between; gap: 10px;
  padding: 7px 0;
  border-bottom: 1px dashed var(--line);
}
.buy-card li:last-child { border-bottom: 0; }
.buy-card li .lab { color: var(--ink-3); }

/* ────── Sticky CTA bar ────── */

.sticky-bar {
  position: fixed; left: 24px; right: 24px; bottom: 24px;
  height: 60px;
  padding: 10px 18px 10px 26px;
  background: rgba(255,254,251,0.85);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border: 1px solid var(--line);
  border-radius: 999px;
  display: flex; align-items: center; justify-content: space-between;
  box-shadow: var(--shadow-soft);
  z-index: 80;
  font-size: 16px;
  transform: translateY(140%);
  transition: transform .35s cubic-bezier(0.4,0,0.2,1);
}
.sticky-bar.visible { transform: translateY(0); }
.sticky-bar .price { font-weight: 500; }
.sticky-bar .meta  { font-size: 13px; color: var(--ink-3); margin-left: 10px; }

/* ────── Footer ────── */

footer {
  background: var(--paper-2);
  color: var(--ink-2);
  padding: 64px 22px 28px;
  font-size: 13px;
  line-height: 1.55;
}
.footer-inner { max-width: 1024px; margin: 0 auto; }
.footer-cols {
  display: grid; grid-template-columns: repeat(5, 1fr); gap: 32px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--line);
}
.footer-cols h5 { margin: 0 0 12px; font-size: 13px; font-weight: 500; color: var(--ink); }
.footer-cols ul { list-style: none; padding: 0; margin: 0; }
.footer-cols li { padding: 4px 0; }
.footer-cols a { color: var(--ink-2); }
.footer-cols a:hover { color: var(--ink); }
.footer-legal {
  padding-top: 18px;
  font-size: 12px; color: var(--ink-3);
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
}

/* ────── Responsive ────── */

@media (max-width: 1023px) {
  .v-display { font-size: 56px; }
  .v-h1 { font-size: 40px; }
  .v-h2 { font-size: 30px; }
  .section { padding: 64px 22px; }
  .specs-grid, .box-grid { grid-template-columns: repeat(2, 1fr); }
  .buy-grid { grid-template-columns: 1fr; }
  .footer-cols { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .v-display { font-size: 42px; }
  .v-h1 { font-size: 32px; }
  .v-lead, .hero p.sub { font-size: 17px; }
  .top-nav nav { display: none; }
  .top-nav nav.compact { display: flex; gap: 0; }
  .top-nav nav.compact a { padding: 6px 8px; font-size: 12px; }
  .device-frame { padding: 10px; border-radius: 18px; }
  .device-screen { aspect-ratio: 3 / 4; }
  .mock-body { grid-template-columns: 1fr; }
  .cal-mock { grid-template-columns: repeat(2, 1fr); }
  .sticky-bar { left: 12px; right: 12px; height: 56px; font-size: 14px; }
}