/* =========================================================
   STARFIELD · 下载页样式
   Aesthetic: 深空终端 / 霓虹极光 · dark aurora terminal
   ========================================================= */

:root {
  --bg: #070b14;
  --bg-2: #0b1220;
  --ink: #eaf2ff;
  --ink-dim: #8fa2bd;
  --ink-faint: #55647c;

  --mint: #14f195;
  --mint-deep: #0bbf74;
  --blue: #4cc9ff;
  --violet: #7c6bff;
  --amber: #ff9f45;
  --rose: #ff5d73;

  --line: rgba(148, 187, 233, 0.12);
  --line-strong: rgba(148, 187, 233, 0.22);
  --glass: rgba(12, 22, 40, 0.55);
  --glass-2: rgba(18, 32, 56, 0.7);

  --radius: 22px;
  --radius-sm: 14px;
  --shadow: 0 30px 80px rgba(2, 8, 20, 0.65);
  --shadow-soft: 0 14px 40px rgba(2, 8, 20, 0.45);

  --font-display: "Unbounded", "Noto Sans SC", sans-serif;
  --font-body: "Space Grotesk", "Noto Sans SC", sans-serif;
  --font-cn: "Noto Sans SC", "Space Grotesk", sans-serif;
  --font-mono: "Space Grotesk", ui-monospace, monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

::selection { background: var(--mint); color: #051019; }

/* ---------- Aurora background ---------- */
.aurora {
  position: fixed; inset: 0; z-index: -2; overflow: hidden;
  background:
    radial-gradient(1100px 700px at 80% -10%, rgba(76, 201, 255, 0.16), transparent 60%),
    radial-gradient(900px 620px at 8% 12%, rgba(20, 241, 149, 0.13), transparent 62%),
    radial-gradient(1000px 800px at 50% 120%, rgba(124, 107, 255, 0.16), transparent 65%),
    var(--bg);
}
.blob { position: absolute; border-radius: 50%; filter: blur(90px); opacity: 0.5; }
.blob.b1 { width: 520px; height: 520px; left: -140px; top: 8%; background: rgba(20, 241, 149, 0.22); animation: drift 18s ease-in-out infinite; }
.blob.b2 { width: 620px; height: 620px; right: -180px; top: -12%; background: rgba(76, 201, 255, 0.2); animation: drift 22s ease-in-out infinite reverse; }
.blob.b3 { width: 480px; height: 480px; left: 38%; bottom: -20%; background: rgba(124, 107, 255, 0.22); animation: drift 26s ease-in-out infinite; }

@keyframes drift {
  0%, 100% { transform: translate3d(0, 0, 0) scale(1); }
  50% { transform: translate3d(50px, -40px, 0) scale(1.12); }
}

.grid-overlay {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(148, 187, 233, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 187, 233, 0.055) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse at 50% 20%, #000 20%, transparent 78%);
}

.grain {
  position: absolute; inset: -200px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.5'/%3E%3C/svg%3E");
  opacity: 0.06; pointer-events: none; mix-blend-mode: overlay;
}

/* ---------- Top bar ---------- */
.topbar {
  position: sticky; top: 0; z-index: 60;
  display: flex; align-items: center; justify-content: space-between;
  gap: 20px;
  padding: 18px clamp(20px, 5vw, 64px);
  backdrop-filter: blur(18px) saturate(1.3);
  -webkit-backdrop-filter: blur(18px) saturate(1.3);
  background: rgba(7, 11, 20, 0.55);
  border-bottom: 1px solid var(--line);
}

.brand { display: flex; align-items: center; gap: 12px; }

.brand-mark {
  width: 40px; height: 40px; border-radius: 12px;
  display: grid; place-items: center;
  background: linear-gradient(145deg, var(--mint), var(--blue));
  color: #04121c;
  font-family: var(--font-display); font-weight: 900; font-size: 18px;
  box-shadow: 0 10px 26px rgba(20, 241, 149, 0.35);
}
.brand-mark.big { width: 54px; height: 54px; border-radius: 16px; font-size: 24px; }

.brand-text {
  display: flex; flex-direction: column;
  font-family: var(--font-display); font-weight: 700;
  font-size: 15px; letter-spacing: 0.12em; line-height: 1.15;
}
.brand-text em {
  font-style: normal; font-family: var(--font-body);
  font-size: 9.5px; letter-spacing: 0.34em; color: var(--ink-dim); font-weight: 500;
}

.topnav { display: flex; align-items: center; gap: clamp(14px, 2.4vw, 30px); }
.topnav a {
  font-size: 13.5px; letter-spacing: 0.08em; color: var(--ink-dim);
  transition: color 0.25s ease; position: relative; padding: 6px 2px;
}
.topnav a::after {
  content: ""; position: absolute; left: 0; bottom: 0;
  width: 0; height: 2px; background: var(--mint); transition: width 0.3s ease;
}
.topnav a:hover { color: var(--ink); }
.topnav a:hover::after { width: 100%; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  align-items: center;
  gap: clamp(32px, 5vw, 72px);
  padding: clamp(48px, 8vw, 110px) clamp(20px, 5vw, 64px) clamp(40px, 6vw, 80px);
  max-width: 1360px; margin: 0 auto;
}

.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 11px; letter-spacing: 0.32em; text-transform: uppercase;
  color: var(--mint); font-weight: 500;
  border: 1px solid rgba(20, 241, 149, 0.28);
  background: rgba(20, 241, 149, 0.08);
  padding: 8px 16px; border-radius: 999px;
}
.pulse-dot {
  width: 7px; height: 7px; border-radius: 50%; background: var(--mint);
  box-shadow: 0 0 0 0 rgba(20, 241, 149, 0.6);
  animation: pulse 2.2s infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(20, 241, 149, 0.55); }
  70% { box-shadow: 0 0 0 12px rgba(20, 241, 149, 0); }
  100% { box-shadow: 0 0 0 0 rgba(20, 241, 149, 0); }
}

.display {
  margin: 26px 0 20px;
  font-family: var(--font-cn);
  font-weight: 900;
  font-size: clamp(2.9rem, 7vw, 5.4rem);
  line-height: 1.02;
  letter-spacing: -0.02em;
}
.display .line { display: block; overflow: hidden; }
.display .line > * { display: inline-block; }
.display .accent {
  font-family: var(--font-display);
  font-size: clamp(3.2rem, 8.2vw, 6.2rem);
  background: linear-gradient(100deg, var(--mint) 0%, var(--blue) 52%, var(--violet) 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  filter: drop-shadow(0 12px 40px rgba(20, 241, 149, 0.25));
}
.display .sub {
  margin-top: 10px;
  font-family: var(--font-cn); font-weight: 300;
  font-size: clamp(1.15rem, 2.6vw, 1.85rem);
  color: var(--ink-dim); letter-spacing: 0.12em;
}

.lede {
  max-width: 52ch; color: var(--ink-dim);
  font-family: var(--font-cn); font-size: clamp(15px, 1.55vw, 17.5px);
  line-height: 1.95; font-weight: 300;
}

/* ---------- Buttons ---------- */
.cta-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(232px, 1fr));
  gap: 14px;
  margin-top: 36px;
}
.cta-empty {
  grid-column: 1 / -1;
  padding: 22px 24px;
  border: 1px dashed var(--line-strong);
  border-radius: 18px;
  font-family: var(--font-cn); font-size: 14.5px; letter-spacing: 0.12em;
  color: var(--ink-dim); text-align: center;
}

.btn-primary, .btn-ghost {
  position: relative;
  display: inline-flex; align-items: center; gap: 14px;
  border-radius: 18px; padding: 15px 22px;
  border: 1px solid transparent;
  transition: transform 0.28s cubic-bezier(.2,.8,.2,1), box-shadow 0.28s ease, border-color 0.28s ease, background 0.28s ease;
}
.btn-primary.sm, .btn-ghost.sm { padding: 11px 18px; border-radius: 13px; font-size: 14px; }

.btn-primary {
  background: linear-gradient(120deg, var(--mint) 0%, var(--blue) 100%);
  color: #04121c;
  box-shadow: 0 22px 50px rgba(20, 241, 149, 0.28), inset 0 1px 0 rgba(255,255,255,0.35);
}
.btn-primary:hover {
  transform: translateY(-3px) scale(1.015);
  box-shadow: 0 30px 66px rgba(20, 241, 149, 0.4), inset 0 1px 0 rgba(255,255,255,0.4);
}
.btn-primary:active { transform: translateY(-1px) scale(0.99); }

.btn-ghost {
  background: var(--glass);
  border-color: var(--line-strong);
  color: var(--ink);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.btn-ghost:hover {
  transform: translateY(-3px);
  border-color: var(--mint);
  background: rgba(20, 241, 149, 0.1);
  box-shadow: 0 22px 50px rgba(20, 241, 149, 0.12);
}

.btn-label { display: flex; flex-direction: column; align-items: flex-start; line-height: 1.25; }
.btn-label b { font-family: var(--font-cn); font-size: 15.5px; font-weight: 700; letter-spacing: 0.03em; }
.btn-label i {
  font-style: normal; font-size: 11px; letter-spacing: 0.12em;
  opacity: 0.72; font-weight: 400;
}
.btn-arrow {
  margin-left: 6px; font-size: 19px;
  transition: transform 0.3s cubic-bezier(.2,.8,.2,1);
}
.btn-primary:hover .btn-arrow, .btn-ghost:hover .btn-arrow { transform: translateX(5px); }

.btn-primary.is-disabled {
  background: linear-gradient(120deg, #243145, #2c3b52);
  color: var(--ink-dim);
  box-shadow: none;
}
.btn-primary.is-disabled:hover { transform: none; box-shadow: none; }

.detect-note {
  margin-top: 18px; font-size: 12.5px; letter-spacing: 0.14em;
  color: var(--ink-faint); text-transform: uppercase;
}

/* ---------- Hero visual / phone ---------- */
.hero-visual {
  position: relative;
  display: grid; place-items: center;
  min-height: 560px;
  perspective: 1400px;
}

.phone-glow {
  position: absolute; width: 460px; height: 460px; border-radius: 50%;
  background: radial-gradient(circle, rgba(20, 241, 149, 0.22), transparent 62%);
  filter: blur(24px);
}

.phone {
  position: relative;
  width: min(300px, 72vw);
  aspect-ratio: 9 / 19;
  border-radius: 46px;
  padding: 11px;
  background: linear-gradient(160deg, #22304a, #0c1424 45%, #1b2740);
  box-shadow:
    0 50px 110px rgba(2, 8, 20, 0.72),
    0 0 0 1px rgba(148, 187, 233, 0.18),
    inset 0 1px 0 rgba(255, 255, 255, 0.12);
  transform: rotateY(-14deg) rotateX(5deg) rotateZ(1.5deg);
  animation: phoneIn 1.1s cubic-bezier(.2,.85,.25,1) both;
}
@keyframes phoneIn {
  from { opacity: 0; transform: rotateY(-24deg) rotateX(12deg) translateY(46px); }
  to { opacity: 1; transform: rotateY(-14deg) rotateX(5deg) rotateZ(1.5deg); }
}

.phone-notch {
  position: absolute; top: 18px; left: 50%; transform: translateX(-50%);
  width: 92px; height: 22px; border-radius: 12px;
  background: #05090f; z-index: 3;
}

.phone-screen {
  height: 100%; border-radius: 36px; overflow: hidden;
  background: linear-gradient(170deg, #0d1728, #071018 55%, #101d33);
  position: relative;
}
.phone-wall {
  height: 100%; display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 14px;
  padding: 30px 20px; text-align: center;
}
.phone-wall::before {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(240px 180px at 50% 12%, rgba(76, 201, 255, 0.18), transparent 70%),
    radial-gradient(220px 180px at 50% 92%, rgba(124, 107, 255, 0.16), transparent 70%);
}

.app-icon-wrap {
  position: relative; width: 116px; height: 116px; z-index: 2;
}
.app-icon-ring {
  position: absolute; inset: -12px; border-radius: 32px;
  border: 1px dashed rgba(20, 241, 149, 0.4);
  animation: spinRing 16s linear infinite;
}
@keyframes spinRing { to { transform: rotate(360deg); } }

.app-icon {
  width: 100%; height: 100%; border-radius: 28px; object-fit: cover;
  background: linear-gradient(150deg, var(--mint), var(--blue));
  box-shadow: 0 22px 50px rgba(20, 241, 149, 0.32);
}
.app-icon-shine {
  position: absolute; inset: 0; border-radius: 28px; pointer-events: none;
  background: linear-gradient(140deg, rgba(255,255,255,0.32), transparent 42%);
}

.phone-name {
  position: relative; z-index: 2;
  font-family: var(--font-cn); font-weight: 700; font-size: 19px; letter-spacing: 0.12em;
}
.phone-ver {
  position: relative; z-index: 2;
  font-family: var(--font-mono); font-size: 11.5px; letter-spacing: 0.18em; color: var(--ink-dim);
}
.phone-bars { position: relative; z-index: 2; display: flex; gap: 6px; margin-top: 8px; }
.phone-bars i {
  width: 34px; height: 5px; border-radius: 4px; background: rgba(148, 187, 233, 0.18);
}
.phone-bars i:first-child { background: var(--mint); width: 52px; }

.phone-chip {
  position: relative; z-index: 2; margin-top: 12px;
  font-size: 9.5px; letter-spacing: 0.28em;
  padding: 7px 13px; border-radius: 999px;
  border: 1px solid rgba(20, 241, 149, 0.3);
  color: var(--mint); background: rgba(20, 241, 149, 0.08);
}

/* float cards */
.float-card {
  position: absolute; z-index: 5;
  background: var(--glass-2);
  border: 1px solid var(--line-strong);
  border-radius: 18px;
  backdrop-filter: blur(18px) saturate(1.2);
  -webkit-backdrop-filter: blur(18px) saturate(1.2);
  box-shadow: var(--shadow-soft);
  animation: floatY 7s ease-in-out infinite;
}
@keyframes floatY {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-14px); }
}

.qr-card {
  right: 2%; top: 12%;
  display: flex; flex-direction: column; align-items: center; gap: 10px;
  padding: 14px 14px 12px;
}
.qr-box {
  width: 116px; height: 116px; border-radius: 12px; overflow: hidden;
  background: #fff; display: grid; place-items: center;
}
.qr-box svg { width: 100%; height: 100%; display: block; }
.qr-meta { text-align: center; line-height: 1.35; }
.qr-meta strong {
  display: block; font-family: var(--font-cn); font-size: 12.5px;
  letter-spacing: 0.16em;
}
.qr-meta span { font-size: 10px; color: var(--ink-dim); letter-spacing: 0.06em; }

.size-card {
  left: 0; bottom: 14%;
  padding: 16px 20px;
  display: flex; flex-direction: column; gap: 2px;
  animation-delay: -3s;
}
.size-label { font-size: 10px; letter-spacing: 0.28em; color: var(--ink-dim); text-transform: uppercase; }
.size-value {
  font-family: var(--font-display); font-size: 26px; font-weight: 700;
  background: linear-gradient(100deg, var(--mint), var(--blue));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.size-sub { font-size: 11px; letter-spacing: 0.14em; color: var(--ink-dim); }

/* ---------- Marquee ---------- */
.marquee {
  overflow: hidden; border-block: 1px solid var(--line);
  background: linear-gradient(90deg, rgba(20, 241, 149, 0.07), rgba(76, 201, 255, 0.07));
  padding: 15px 0;
}
.marquee-track {
  display: flex; align-items: center; gap: 34px; width: max-content;
  animation: slide 30s linear infinite;
  font-family: var(--font-display); font-size: 13px; letter-spacing: 0.28em;
  color: var(--ink-dim); text-transform: uppercase;
}
.marquee-track i { color: var(--mint); font-style: normal; }
@keyframes slide { to { transform: translateX(-50%); } }

/* ---------- Sections ---------- */
.section {
  max-width: 1360px; margin: 0 auto;
  padding: clamp(64px, 9vw, 128px) clamp(20px, 5vw, 64px);
}
.section-head { margin-bottom: clamp(32px, 5vw, 58px); }
.kicker {
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.42em;
  color: var(--mint); margin-bottom: 14px;
}
.section-title {
  font-family: var(--font-cn); font-weight: 900;
  font-size: clamp(2.1rem, 4.6vw, 3.55rem); line-height: 1.12;
  letter-spacing: -0.01em;
}
.section-title em {
  font-style: normal;
  background: linear-gradient(100deg, var(--blue), var(--violet));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}

/* ---------- Features ---------- */
.feature-grid {
  display: grid; gap: 18px;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}
.feature-card {
  position: relative; overflow: hidden;
  border-radius: var(--radius);
  padding: 30px 26px 32px;
  border: 1px solid var(--line);
  background: var(--glass);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  transition: transform 0.4s cubic-bezier(.2,.8,.2,1), border-color 0.4s ease, background 0.4s ease;
}
.feature-card:hover {
  transform: translateY(-8px);
  border-color: rgba(20, 241, 149, 0.35);
  background: rgba(18, 32, 56, 0.72);
}
.feature-card.wide { grid-column: span 2; }
.feature-card h3 {
  font-family: var(--font-cn); font-size: 21px; font-weight: 700;
  letter-spacing: 0.05em; margin: 12px 0 12px;
}
.feature-card p {
  font-family: var(--font-cn); font-size: 14.5px; line-height: 1.9;
  color: var(--ink-dim); font-weight: 300; max-width: 38ch;
}
.feat-num {
  font-family: var(--font-display); font-size: 13px; letter-spacing: 0.24em;
  color: var(--mint); opacity: 0.9;
}

.feature-card.accent {
  background: linear-gradient(150deg, rgba(20, 241, 149, 0.16), rgba(76, 201, 255, 0.07));
  border-color: rgba(20, 241, 149, 0.3);
}
.feature-card.dark {
  background: linear-gradient(160deg, rgba(124, 107, 255, 0.16), rgba(10, 18, 32, 0.7));
  border-color: rgba(124, 107, 255, 0.28);
}

.feat-meter {
  margin-top: 22px; height: 7px; border-radius: 99px;
  background: rgba(148, 187, 233, 0.14); overflow: hidden;
}
.feat-meter span {
  display: block; height: 100%; border-radius: 99px;
  background: linear-gradient(90deg, var(--mint), var(--blue));
  box-shadow: 0 0 18px rgba(20, 241, 149, 0.5);
}

.feat-orb {
  position: absolute; right: -30px; bottom: -30px;
  width: 130px; height: 130px; border-radius: 50%;
  background: radial-gradient(circle at 32% 30%, rgba(76, 201, 255, 0.55), rgba(76, 201, 255, 0.02) 70%);
  filter: blur(2px);
}

.feat-badges { display: flex; gap: 9px; margin-top: 22px; flex-wrap: wrap; }
.feat-badges span {
  font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase;
  padding: 7px 13px; border-radius: 999px;
  background: rgba(20, 241, 149, 0.16); color: var(--mint);
  border: 1px solid rgba(20, 241, 149, 0.28);
}

.feat-list { list-style: none; margin-top: 20px; display: grid; gap: 9px; }
.feat-list li {
  font-family: var(--font-cn); font-size: 13px; color: var(--ink-dim);
  padding-left: 18px; position: relative;
}
.feat-list li::before {
  content: "✦"; position: absolute; left: 0; color: var(--violet); font-size: 11px;
}

/* ---------- Version table ---------- */
.version-table {
  border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; background: var(--glass);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
}
.vrow {
  display: grid;
  grid-template-columns: 1.25fr 1.45fr 0.75fr 1fr 0.75fr 0.7fr;
  gap: 14px; align-items: center;
  padding: 18px 26px;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-cn);
}
.vrow:last-child { border-bottom: 0; }
.vhead {
  font-size: 11px; letter-spacing: 0.26em; text-transform: uppercase;
  color: var(--ink-faint); background: rgba(148, 187, 233, 0.05);
  font-family: var(--font-mono);
}
.vplat { display: flex; align-items: center; gap: 10px; font-weight: 500; letter-spacing: 0.06em; }
.vlabel { font-weight: 500; letter-spacing: 0.05em; }
.vnote {
  font-family: var(--font-cn); font-size: 12.5px; color: var(--ink-dim);
  letter-spacing: 0.05em; font-weight: 300;
}
.vempty {
  grid-column: 1 / -1;
  text-align: center; color: var(--ink-faint); font-size: 13.5px;
  letter-spacing: 0.18em; padding: 18px 0;
}
.dot { width: 9px; height: 9px; border-radius: 50%; flex: none; }
.dot.and { background: var(--mint); box-shadow: 0 0 12px rgba(20, 241, 149, 0.7); }

.mono { font-family: var(--font-mono); font-size: 13px; letter-spacing: 0.06em; color: var(--ink-dim); }

.mini-btn {
  border: 1px solid var(--mint); background: rgba(20, 241, 149, 0.12);
  color: var(--mint); border-radius: 11px; padding: 9px 18px;
  font-size: 12.5px; letter-spacing: 0.12em; font-family: var(--font-cn);
  transition: all 0.25s ease;
}
.mini-btn:hover { background: var(--mint); color: #04121c; transform: translateY(-2px); }
.mini-btn.ghost { border-color: var(--line-strong); background: transparent; color: var(--ink-dim); }
.mini-btn.ghost:hover { border-color: var(--blue); color: var(--blue); background: rgba(76, 201, 255, 0.1); }

.install-note {
  margin-top: 26px; padding: 24px 26px;
  border-left: 3px solid var(--mint);
  background: rgba(20, 241, 149, 0.06);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}
.install-note h4 {
  font-family: var(--font-cn); font-size: 15px; letter-spacing: 0.16em;
  margin-bottom: 8px;
}
.install-note p {
  font-family: var(--font-cn); font-size: 14px; color: var(--ink-dim);
  line-height: 1.95; font-weight: 300;
}

/* ---------- Footer ---------- */
.footer {
  border-top: 1px solid var(--line);
  padding: 48px clamp(20px, 5vw, 64px) 34px;
  max-width: 1360px; margin: 0 auto;
}
.footer-top {
  display: flex; justify-content: space-between; align-items: center;
  gap: 28px; flex-wrap: wrap;
}
.footer-brand { display: flex; align-items: center; gap: 16px; }
.footer-brand strong {
  font-family: var(--font-display); font-size: 16px; letter-spacing: 0.12em; display: block;
}
.footer-brand p { font-family: var(--font-cn); font-size: 12.5px; color: var(--ink-dim); letter-spacing: 0.16em; }

.footer-links { display: flex; gap: 24px; flex-wrap: wrap; }
.footer-links a {
  font-family: var(--font-cn); font-size: 13px; color: var(--ink-dim);
  letter-spacing: 0.12em; transition: color 0.25s;
}
.footer-links a:hover { color: var(--mint); }

.footer-bottom {
  margin-top: 32px; padding-top: 22px; border-top: 1px solid var(--line);
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  font-size: 11.5px; letter-spacing: 0.14em; color: var(--ink-faint);
}

/* ---------- Entrance animation ---------- */
@keyframes popIn {
  from { opacity: 0; transform: translateY(24px) scale(0.94); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

/* ---------- Toast ---------- */
.toast-wrap {
  position: fixed; right: 22px; bottom: 22px; z-index: 300;
  display: flex; flex-direction: column; gap: 12px;
}
.toast {
  display: flex; align-items: center; gap: 12px;
  padding: 15px 20px; border-radius: 15px;
  background: rgba(14, 26, 44, 0.92);
  border: 1px solid var(--line-strong);
  box-shadow: var(--shadow-soft);
  font-family: var(--font-cn); font-size: 13.5px; letter-spacing: 0.05em;
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  animation: toastIn 0.42s cubic-bezier(.2,.9,.25,1);
  max-width: min(340px, 86vw);
}
.toast.out { animation: toastOut 0.32s ease forwards; }
.toast i {
  width: 9px; height: 9px; border-radius: 50%; flex: none;
  background: var(--mint); box-shadow: 0 0 12px rgba(20, 241, 149, 0.7);
}
.toast.warn i { background: var(--amber); box-shadow: 0 0 12px rgba(255, 159, 69, 0.7); }
.toast.err i { background: var(--rose); box-shadow: 0 0 12px rgba(255, 93, 115, 0.7); }

@keyframes toastIn {
  from { opacity: 0; transform: translateY(18px) scale(0.95); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}
@keyframes toastOut {
  to { opacity: 0; transform: translateY(12px) scale(0.96); }
}

/* ---------- Reveal on scroll ---------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity 0.7s ease, transform 0.7s cubic-bezier(.2,.8,.2,1); }
.reveal.show { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 1080px) {
  .feature-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .feature-card.wide { grid-column: span 2; }
  .hero-visual { min-height: 480px; }
}

@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; }
  .hero-visual { order: -1; min-height: 430px; margin-bottom: 10px; }
  .phone { transform: rotateY(-8deg) rotateX(4deg); }
  .topnav { display: none; }
  .vrow { grid-template-columns: 1fr 1fr; row-gap: 10px; padding: 18px 18px; }
  .vhead { display: none; }
  .vrow > span:last-child { grid-column: 1 / -1; }
  .vrow > span:last-child .mini-btn { width: 100%; }
  .qr-card { right: 0; top: 4%; transform: scale(0.9); transform-origin: top right; }
  .size-card { left: -4px; bottom: 8%; }
}

@media (max-width: 560px) {
  .feature-grid { grid-template-columns: 1fr; }
  .feature-card.wide { grid-column: span 1; }
  .cta-row { flex-direction: column; }
  .btn-primary, .btn-ghost { width: 100%; justify-content: space-between; }
  .display .sub { letter-spacing: 0.06em; }
  .footer-bottom { flex-direction: column; }
  .float-card { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

.detect-note.warn-note { color: var(--amber); text-transform: none; letter-spacing: 0.08em; }