/* ==========================================================================
   邻聊 LinChat — 官网样式
   深色 · 翡翠绿强调色 · 玻璃质感卡片
   ========================================================================== */

:root {
  --bg: #06090a;
  --bg-soft: #0a100f;
  --card: rgba(255, 255, 255, 0.028);
  --card-hover: rgba(255, 255, 255, 0.045);
  --line: rgba(255, 255, 255, 0.075);
  --line-strong: rgba(255, 255, 255, 0.14);
  --text: #e9f1ee;
  --dim: #a7b6b1;
  --mute: #6e807a;
  --accent: #34d399;
  --accent-2: #2dd4bf;
  --accent-soft: rgba(52, 211, 153, 0.12);
  --grad: linear-gradient(135deg, #4ade80 0%, #2dd4bf 100%);
  --radius: 18px;
  --radius-sm: 12px;
  --shell: 1160px;
  --shadow: 0 28px 60px -32px rgba(0, 0, 0, 0.9);
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Noto Sans SC", sans-serif;
  font-size: 15px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(900px 520px at 78% -8%, rgba(45, 212, 191, 0.10), transparent 62%),
    radial-gradient(760px 460px at 8% 4%, rgba(74, 222, 128, 0.08), transparent 60%),
    linear-gradient(180deg, #070b0b 0%, #06090a 40%, #050807 100%);
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.35;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.022) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(1100px 700px at 50% 0%, #000 30%, transparent 78%);
  -webkit-mask-image: radial-gradient(1100px 700px at 50% 0%, #000 30%, transparent 78%);
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
code {
  font-family: var(--mono);
  font-size: 0.88em;
  padding: 2px 6px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--line);
  color: #cdeee3;
  white-space: nowrap;
}

h1, h2, h3 { margin: 0; line-height: 1.22; letter-spacing: -0.02em; font-weight: 680; }

.skip {
  position: absolute;
  left: -9999px;
  top: 0;
  padding: 10px 16px;
  background: var(--accent);
  color: #04211a;
  z-index: 200;
  border-radius: 0 0 10px 0;
  font-weight: 700;
}
.skip:focus { left: 0; }

.shell {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 26px;
}

/* ------------------------------------------------------------- announce */
.announce-bar {
  position: relative;
  z-index: 60;
  padding: 9px 26px;
  text-align: center;
  font-size: 13px;
  color: #cbf5e6;
  background: linear-gradient(90deg, rgba(52, 211, 153, 0.16), rgba(45, 212, 191, 0.12));
  border-bottom: 1px solid rgba(52, 211, 153, 0.22);
}

/* ---------------------------------------------------------------- topbar */
.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  background: rgba(6, 9, 10, 0.62);
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s, background 0.25s;
}
.topbar.is-scrolled {
  border-bottom-color: var(--line);
  background: rgba(6, 9, 10, 0.86);
}
.topbar-inner {
  display: flex;
  align-items: center;
  gap: 22px;
  height: 66px;
}

.brand { display: inline-flex; align-items: center; gap: 11px; }
.brand-mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 12px;
  color: #063b2e;
  background: var(--grad);
  box-shadow: 0 10px 24px -12px rgba(52, 211, 153, 0.8);
}
.brand-mark svg { width: 22px; height: 22px; }
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-text strong { font-size: 16px; letter-spacing: 0.01em; }
.brand-text span { font-size: 11px; color: var(--mute); letter-spacing: 0.14em; text-transform: uppercase; }

.nav { display: flex; gap: 4px; margin-left: auto; }
.nav a {
  padding: 8px 13px;
  border-radius: 999px;
  font-size: 13.5px;
  color: var(--dim);
  transition: color 0.2s, background 0.2s;
}
.nav a:hover { color: var(--text); background: rgba(255, 255, 255, 0.055); }

/* --------------------------------------------------------------- buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 20px;
  border-radius: 12px;
  font-size: 14px;
  font-weight: 620;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.18s cubic-bezier(0.22, 0.61, 0.36, 1), box-shadow 0.2s,
    background 0.2s, border-color 0.2s, color 0.2s;
  white-space: nowrap;
}
.btn .ico { width: 17px; height: 17px; flex: 0 0 auto; }
.btn-primary {
  color: #03211a;
  background: var(--grad);
  box-shadow: 0 14px 30px -16px rgba(45, 212, 191, 0.9);
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 20px 38px -18px rgba(45, 212, 191, 1); }
.btn-ghost {
  color: var(--text);
  border-color: var(--line-strong);
  background: rgba(255, 255, 255, 0.04);
}
.btn-ghost:hover { background: rgba(255, 255, 255, 0.08); border-color: rgba(255, 255, 255, 0.24); }
.btn-sm { padding: 8px 15px; font-size: 13px; border-radius: 10px; }
.btn-lg { padding: 14px 26px; font-size: 15px; border-radius: 14px; }
.btn-block { width: 100%; }
.btn.is-missing {
  color: var(--mute);
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--line);
  box-shadow: none;
  cursor: not-allowed;
}
.btn.is-missing:hover { transform: none; box-shadow: none; }

/* ------------------------------------------------------------------ hero */
.hero { position: relative; padding: 74px 0 96px; }
.hero-glow {
  position: absolute;
  inset: -10% 20% auto -10%;
  height: 620px;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.5;
  background: radial-gradient(circle at 40% 40%, rgba(45, 212, 191, 0.24), transparent 62%);
  pointer-events: none;
}
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
  gap: 54px;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 18px;
  font-size: 12.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--mute);
}
.eyebrow .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px rgba(52, 211, 153, 0.16);
}

.hero h1 {
  font-size: clamp(2.5rem, 5.4vw, 4.05rem);
  line-height: 1.12;
  letter-spacing: -0.035em;
  font-weight: 720;
  /* 中文没有空格，默认会在任意字之间折行；balance 让两行长度接近 */
  text-wrap: balance;
  background: linear-gradient(180deg, #ffffff 20%, #b9d8cd 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.lede {
  margin: 22px 0 0;
  max-width: 33em;
  font-size: 16.5px;
  line-height: 1.85;
  color: var(--dim);
}
.lede strong { color: #d7f7ea; font-weight: 640; }

.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }

.hero-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
}
.hero-facts li {
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 12.5px;
  color: var(--dim);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
}

/* ------------------------------------------------------- phone mockup */
.hero-visual { position: relative; display: grid; place-items: center; }

.phone {
  position: relative;
  width: 300px;
  padding: 10px;
  border-radius: 40px;
  background: linear-gradient(160deg, #1b2624, #0b100f 60%);
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow:
    0 40px 80px -40px rgba(0, 0, 0, 1),
    inset 0 1px 0 rgba(255, 255, 255, 0.1);
}
.phone-screen {
  position: relative;
  border-radius: 32px;
  overflow: hidden;
  background: #080d0c;
  border: 1px solid rgba(255, 255, 255, 0.06);
  display: flex;
  flex-direction: column;
  height: 560px;
}

.phone-status {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 18px 6px;
  font-size: 11px;
  color: var(--mute);
  font-variant-numeric: tabular-nums;
}
.phone-status-right { display: inline-flex; gap: 3px; align-items: flex-end; }
.phone-status-right i {
  display: block;
  width: 3px;
  border-radius: 1px;
  background: currentColor;
  opacity: 0.7;
}
.phone-status-right i:nth-child(1) { height: 4px; }
.phone-status-right i:nth-child(2) { height: 7px; }
.phone-status-right i:nth-child(3) { height: 10px; }

.chat-head {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 16px 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.055);
}
.chat-avatar {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  font-size: 13px;
  font-weight: 700;
  color: #05281f;
  background: var(--grad);
}
.chat-who { display: flex; flex-direction: column; line-height: 1.3; min-width: 0; }
.chat-who strong { font-size: 13.5px; font-weight: 640; }
.chat-who span { font-size: 10.5px; color: var(--accent); opacity: 0.85; }
.chat-actions { margin-left: auto; color: var(--mute); }
.chat-actions svg { width: 17px; height: 17px; }

.chat-body {
  flex: 1 1 auto;
  padding: 14px 14px 6px;
  display: flex;
  flex-direction: column;
  gap: 9px;
  overflow: hidden;
  background:
    radial-gradient(420px 260px at 100% 0%, rgba(45, 212, 191, 0.07), transparent 70%),
    radial-gradient(360px 240px at 0% 100%, rgba(74, 222, 128, 0.06), transparent 70%);
}
.chat-day { margin: 0 0 2px; text-align: center; font-size: 10px; color: var(--mute); }

.bubble {
  position: relative;
  max-width: 82%;
  padding: 9px 12px;
  font-size: 12.5px;
  line-height: 1.55;
  border-radius: 14px;
  word-break: break-word;
}
.bubble-in {
  align-self: flex-start;
  background: rgba(255, 255, 255, 0.065);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-bottom-left-radius: 5px;
  color: #e4efeb;
}
.bubble-out {
  align-self: flex-end;
  background: linear-gradient(135deg, rgba(52, 211, 153, 0.9), rgba(45, 212, 191, 0.82));
  border-bottom-right-radius: 5px;
  color: #05241c;
  font-weight: 520;
}
.bubble-meta {
  display: block;
  margin-top: 3px;
  font-size: 9.5px;
  opacity: 0.62;
  text-align: right;
}
.quote {
  margin: 0 0 5px;
  padding: 4px 8px;
  font-size: 10.5px;
  color: var(--dim);
  border-left: 2px solid var(--accent);
  background: rgba(0, 0, 0, 0.28);
  border-radius: 5px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.quote span { color: var(--accent); margin-right: 4px; }

.file-bubble { display: flex; gap: 10px; align-items: flex-start; max-width: 88%; }
.file-ico {
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border-radius: 9px;
  color: var(--accent);
  background: var(--accent-soft);
}
.file-ico svg { width: 16px; height: 16px; }
.file-main { display: flex; flex-direction: column; gap: 3px; min-width: 0; flex: 1 1 auto; }
.file-main strong {
  font-size: 11.5px;
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.file-size { font-size: 9.5px; color: var(--mute); }
.file-bar {
  display: block;
  height: 3px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.1);
  overflow: hidden;
  margin-top: 2px;
}
.file-bar i { display: block; height: 100%; border-radius: 999px; background: var(--grad); }
.file-pct { font-size: 9px; color: var(--accent); font-variant-numeric: tabular-nums; }

.chat-input {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.055);
}
.chat-input-box {
  flex: 1 1 auto;
  padding: 9px 13px;
  font-size: 11.5px;
  color: var(--mute);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.055);
  border: 1px solid rgba(255, 255, 255, 0.05);
}
.chat-send {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  color: #05241c;
  background: var(--grad);
}
.chat-send svg { width: 16px; height: 16px; }

.visual-badge {
  position: absolute;
  display: flex;
  flex-direction: column;
  padding: 10px 15px;
  border-radius: 14px;
  background: rgba(10, 16, 15, 0.92);
  border: 1px solid var(--line-strong);
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}
.visual-badge strong {
  font-size: 17px;
  font-weight: 700;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  line-height: 1.2;
}
.visual-badge span { font-size: 10.5px; color: var(--mute); letter-spacing: 0.04em; }
.visual-badge-a { left: -6px; bottom: 84px; }
.visual-badge-b { right: -14px; top: 92px; }

/* -------------------------------------------------------------- sections */
.section { position: relative; padding: 84px 0; }
.section-alt {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.014), transparent 65%);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.highlights { padding-top: 0; }

.sec-head { max-width: 640px; margin-bottom: 44px; }
.sec-head h2 {
  font-size: clamp(1.7rem, 3.1vw, 2.3rem);
  letter-spacing: -0.028em;
}
.sec-sub { margin: 14px 0 0; font-size: 14.5px; color: var(--dim); }

/* --------------------------------------------------------------- big3 */
.big3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 30px; }
.big3-item { position: relative; padding-top: 22px; border-top: 1px solid var(--line-strong); }
.big3-num {
  display: block;
  margin-bottom: 10px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--accent);
  opacity: 0.75;
}
.big3-item h2 { font-size: 17.5px; letter-spacing: -0.015em; }
.big3-item p { margin: 10px 0 0; font-size: 13.8px; color: var(--dim); line-height: 1.75; }
.big3-item code { font-size: 0.82em; }

/* ------------------------------------------------------------ features */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}
.card {
  padding: 24px 22px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--card);
  transition: transform 0.22s cubic-bezier(0.22, 0.61, 0.36, 1), border-color 0.22s,
    background 0.22s, box-shadow 0.22s;
}
.card:hover {
  transform: translateY(-3px);
  background: var(--card-hover);
  border-color: rgba(52, 211, 153, 0.28);
  box-shadow: 0 26px 50px -34px rgba(45, 212, 191, 0.55);
}
.card-accent {
  border-color: rgba(52, 211, 153, 0.24);
  background: linear-gradient(160deg, rgba(52, 211, 153, 0.09), rgba(45, 212, 191, 0.03));
}
.card-ico {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 11px;
  margin-bottom: 15px;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid rgba(52, 211, 153, 0.22);
}
.card-ico svg { width: 20px; height: 20px; }
.card h3 { font-size: 15.5px; letter-spacing: -0.01em; }
.ticks { margin: 12px 0 0; padding: 0; list-style: none; display: grid; gap: 7px; }
.ticks li {
  position: relative;
  padding-left: 17px;
  font-size: 13px;
  color: var(--dim);
  line-height: 1.65;
}
.ticks li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0.7;
}

/* --------------------------------------------------------------- steps */
.steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: step;
}
.step {
  position: relative;
  padding: 26px 22px 24px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.024);
}
.step-num {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  margin-bottom: 14px;
  border-radius: 50%;
  font-size: 13px;
  font-weight: 700;
  color: #05241c;
  background: var(--grad);
  box-shadow: 0 10px 22px -12px rgba(45, 212, 191, 0.9);
}
.step h3 { font-size: 15px; }
.step p { margin: 9px 0 0; font-size: 13.2px; color: var(--dim); line-height: 1.75; }

.note-strip {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px;
  margin-top: 26px;
  padding: 15px 18px;
  font-size: 13px;
  color: var(--dim);
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  border-left: 2px solid rgba(52, 211, 153, 0.6);
  background: rgba(255, 255, 255, 0.025);
}
.note-strip strong { color: var(--text); }
.note-strip a { color: var(--accent); font-weight: 600; }
.note-strip a:hover { text-decoration: underline; }

/* ------------------------------------------------------------- privacy */
.privacy-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: 46px;
  align-items: start;
}
.privacy-copy h2 { font-size: clamp(1.6rem, 2.9vw, 2.15rem); }
.privacy-copy p { margin: 16px 0 0; font-size: 14.2px; color: var(--dim); line-height: 1.85; }
.privacy-point {
  display: flex;
  gap: 9px;
  align-items: flex-start;
  padding: 13px 16px;
  margin-top: 22px !important;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(52, 211, 153, 0.22);
  background: rgba(52, 211, 153, 0.07);
  color: #cdf3e6 !important;
  font-size: 13.2px !important;
}
.privacy-point .ico { flex: 0 0 auto; width: 16px; height: 16px; margin-top: 3px; color: var(--accent); }

.path-card {
  padding: 24px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: linear-gradient(165deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.015));
  box-shadow: var(--shadow);
}
.path-title {
  margin: 0 0 16px;
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--mute);
}
.path-list { margin: 0; display: grid; gap: 14px; }
.path-list div { display: grid; gap: 5px; }
.path-list dt { font-size: 12.5px; color: var(--accent); font-weight: 600; }
.path-list dd { margin: 0; font-size: 12.5px; word-break: break-all; }
.path-list code { white-space: normal; display: inline-block; line-height: 1.6; }
.path-note {
  margin: 18px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-size: 12.3px;
  color: var(--mute);
  line-height: 1.7;
}

/* ------------------------------------------------------------ download */
.dl-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.dl-card {
  padding: 26px 24px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--card);
  transition: border-color 0.22s, background 0.22s;
}
.dl-card:hover { border-color: rgba(255, 255, 255, 0.16); background: var(--card-hover); }
.dl-head { display: flex; align-items: center; gap: 14px; margin-bottom: 20px; }
.dl-ico {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 13px;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid rgba(52, 211, 153, 0.2);
}
.dl-ico svg { width: 22px; height: 22px; }
.dl-head h3 { font-size: 16px; }
.dl-head p { margin: 2px 0 0; font-size: 12.5px; color: var(--mute); }

.dl-meta {
  display: grid;
  gap: 9px;
  margin: 0 0 20px;
  padding: 15px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.dl-meta div { display: flex; justify-content: space-between; gap: 14px; font-size: 12.8px; }
.dl-meta dt { color: var(--mute); }
.dl-meta dd { margin: 0; color: var(--dim); font-family: var(--mono); font-size: 12px; }
.dl-hint { margin: 14px 0 0; font-size: 11.8px; color: var(--mute); line-height: 1.65; }

.dl-foot {
  margin-top: 24px;
  padding: 18px 20px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.022);
  font-size: 13px;
  color: var(--dim);
}
.dl-foot strong { color: var(--text); }

/* ------------------------------------------------------------------ faq */
.faq { border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary {
  position: relative;
  padding: 19px 44px 19px 0;
  font-size: 15px;
  font-weight: 580;
  cursor: pointer;
  list-style: none;
  transition: color 0.18s;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "";
  position: absolute;
  right: 10px;
  top: 50%;
  width: 9px;
  height: 9px;
  border-right: 1.6px solid var(--mute);
  border-bottom: 1.6px solid var(--mute);
  transform: translateY(-70%) rotate(45deg);
  transition: transform 0.22s, border-color 0.2s;
}
.faq summary:hover { color: #fff; }
.faq details[open] summary::after {
  transform: translateY(-30%) rotate(-135deg);
  border-color: var(--accent);
}
.faq-body { padding: 0 0 22px; max-width: 62em; font-size: 13.8px; color: var(--dim); line-height: 1.85; }
.faq-body p { margin: 0 0 10px; }
.faq-body p:last-child { margin-bottom: 0; }
.faq-body ol { margin: 0; padding-left: 20px; display: grid; gap: 7px; }
.faq-body strong { color: var(--text); }

/* ----------------------------------------------------------------- foot */
.foot {
  position: relative;
  z-index: 1;
  padding: 48px 0 56px;
  border-top: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.24);
}
.foot-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 22px 32px;
}
.foot-brand { display: flex; align-items: center; gap: 11px; }
.foot-brand .brand-mark { width: 34px; height: 34px; border-radius: 10px; }
.foot-brand .brand-mark svg { width: 19px; height: 19px; }
.foot-brand div { display: flex; flex-direction: column; line-height: 1.35; }
.foot-brand strong { font-size: 14px; }
.foot-brand span { font-size: 11.5px; color: var(--mute); }

.foot-links { display: flex; flex-wrap: wrap; gap: 18px; margin-left: auto; font-size: 13px; }
.foot-links a { color: var(--dim); }
.foot-links a:hover { color: var(--accent); }

.foot-meta {
  flex: 1 0 100%;
  margin: 0;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  font-size: 11.8px;
  color: var(--mute);
  line-height: 1.75;
}

/* --------------------------------------------------------------- plain */
.is-plain { display: grid; place-items: center; min-height: 100vh; }
.plain-wrap { position: relative; z-index: 1; max-width: 460px; padding: 40px 24px; text-align: center; }
.plain-wrap h1 { font-size: 26px; }
.plain-wrap p { margin: 14px 0 26px; color: var(--dim); font-size: 14px; }

/* ---------------------------------------------------------------- reveal */
@media (prefers-reduced-motion: no-preference) {
  .hero-copy > *, .hero-visual { animation: rise 0.7s cubic-bezier(0.22, 0.61, 0.36, 1) both; }
  .hero-copy > *:nth-child(2) { animation-delay: 0.06s; }
  .hero-copy > *:nth-child(3) { animation-delay: 0.12s; }
  .hero-copy > *:nth-child(4) { animation-delay: 0.18s; }
  .hero-copy > *:nth-child(5) { animation-delay: 0.24s; }
  .hero-visual { animation-delay: 0.16s; }
  @keyframes rise {
    from { opacity: 0; transform: translateY(14px); }
    to { opacity: 1; transform: none; }
  }
}

/* ------------------------------------------------------------ responsive */
@media (max-width: 1040px) {
  .hero-grid { grid-template-columns: 1fr; gap: 46px; }
  .hero-visual { order: -1; }
  .phone-screen { height: 500px; }
  .visual-badge-a { left: 4px; bottom: 40px; }
  .visual-badge-b { right: 0; top: 40px; }
  .feature-grid, .steps, .big3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .privacy-grid { grid-template-columns: 1fr; gap: 30px; }
}

@media (max-width: 760px) {
  body { font-size: 14.5px; }
  .shell { padding: 0 18px; }
  .nav { display: none; }
  .topbar-cta { margin-left: auto; }
  .hero { padding: 44px 0 64px; }
  .hero h1 { font-size: clamp(2.1rem, 8.4vw, 2.9rem); }
  .lede { font-size: 15px; }
  .hero-actions .btn { flex: 1 1 auto; }
  .section { padding: 60px 0; }
  .feature-grid, .steps, .big3, .dl-grid { grid-template-columns: 1fr; }
  .phone { width: 272px; }
  .phone-screen { height: 460px; }
  .visual-badge { display: none; }
  .foot-inner { flex-direction: column; align-items: flex-start; }
  .foot-links { margin-left: 0; }
  .sec-head { margin-bottom: 32px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}