/* 首页 / 登录 */
body { overflow-x: hidden; }
body.leaving .landing { opacity: 0; transform: scale(0.985); transition: opacity .28s var(--ease), transform .28s var(--ease); }

.bg { position: fixed; inset: 0; z-index: 0; pointer-events: none; overflow: hidden; }
.bg-grid {
  position: absolute; inset: -1px;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 70% 60% at 35% 45%, #000 30%, transparent 75%);
}
.bg-glow { position: absolute; border-radius: 50%; filter: blur(90px); opacity: .55; }
.g1 { width: 620px; height: 620px; left: -160px; top: -180px; background: radial-gradient(circle, rgba(255, 77, 109, 0.55), transparent 65%); }
.g2 { width: 560px; height: 560px; right: -140px; bottom: -220px; background: radial-gradient(circle, rgba(70, 211, 245, 0.28), transparent 65%); }

.landing {
  position: relative; z-index: 1; min-height: 100vh;
  display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(380px, 0.75fr);
  max-width: 1320px; margin: 0 auto; padding: 0 48px;
}

.hero { position: relative; display: flex; flex-direction: column; padding: 36px 0 56px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 650; font-size: 17px; letter-spacing: .02em; }
.brand em { font-style: normal; font-size: 11px; font-weight: 600; letter-spacing: .28em; color: var(--text-3); padding-left: 2px; }
.brand img { border-radius: 10px; box-shadow: 0 8px 24px -8px rgba(255, 90, 95, 0.7); }

.hero-body { position: relative; z-index: 2; margin-top: auto; margin-bottom: auto; padding-top: 48px; max-width: 620px; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px; margin: 0 0 22px;
  padding: 6px 12px 6px 10px; border-radius: 999px; font-size: 12.5px; color: var(--text-2);
  background: rgba(255, 255, 255, 0.04); border: 1px solid var(--line-2); backdrop-filter: blur(8px);
}
.eyebrow .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 4px rgba(47, 209, 139, 0.18); animation: pulse 2s ease-in-out infinite; }
@keyframes pulse { 50% { box-shadow: 0 0 0 7px rgba(47, 209, 139, 0); } }

h1 { margin: 0; font-size: clamp(38px, 5vw, 64px); line-height: 1.12; font-weight: 750; letter-spacing: -0.02em; }
.grad { background: var(--accent-grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lead { margin: 22px 0 34px; font-size: 16.5px; line-height: 1.8; color: var(--text-2); max-width: 540px; }

.features { list-style: none; margin: 0; padding: 0; display: grid; gap: 16px; }
.features li { display: flex; gap: 14px; align-items: flex-start; }
.features b { display: block; font-weight: 600; font-size: 15px; margin-bottom: 2px; }
.features span:not(.f-icon) { color: var(--text-3); font-size: 13.5px; }
.f-icon {
  flex: none; width: 38px; height: 38px; border-radius: 11px; display: grid; place-items: center;
  color: #ffb08a; background: linear-gradient(145deg, rgba(255, 90, 95, 0.18), rgba(255, 181, 71, 0.06));
  border: 1px solid rgba(255, 122, 69, 0.25);
}
.f-icon svg { width: 19px; height: 19px; }

.platforms { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 34px; }
.chip {
  display: inline-flex; align-items: center; gap: 8px; padding: 7px 14px; border-radius: 999px;
  font-size: 13px; color: var(--text-2); background: rgba(255, 255, 255, 0.03); border: 1px solid var(--line);
}
.chip::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--c); box-shadow: 0 0 12px var(--c); }

/* 雷达动效 */
.radar {
  position: absolute; z-index: 1; right: -8%; top: 50%; width: min(56vw, 640px); aspect-ratio: 1;
  transform: translateY(-50%); border-radius: 50%; opacity: .9;
  mask-image: radial-gradient(circle, #000 55%, transparent 72%);
}
.ring { position: absolute; inset: 0; margin: auto; border-radius: 50%; border: 1px solid rgba(255, 255, 255, 0.07); }
.r1 { width: 100%; height: 100%; }
.r2 { width: 66%; height: 66%; }
.r3 { width: 33%; height: 33%; border-color: rgba(255, 255, 255, 0.1); }
.axis { position: absolute; background: rgba(255, 255, 255, 0.05); }
.ax1 { left: 0; right: 0; top: 50%; height: 1px; }
.ax2 { top: 0; bottom: 0; left: 50%; width: 1px; }
.sweep {
  position: absolute; inset: 0; border-radius: 50%;
  background: conic-gradient(from 0deg, rgba(255, 106, 80, 0) 0deg, rgba(255, 106, 80, 0) 290deg, rgba(255, 106, 80, 0.06) 320deg, rgba(255, 122, 69, 0.35) 359deg, rgba(255, 180, 120, 0.7) 360deg);
  animation: sweep 6s linear infinite;
}
@keyframes sweep { to { transform: rotate(360deg); } }
.blip {
  position: absolute; left: var(--x); top: var(--y); width: 10px; height: 10px; margin: -5px 0 0 -5px;
  border-radius: 50%; background: var(--c); box-shadow: 0 0 16px 2px var(--c);
  opacity: 0; animation: blip 6s var(--d) ease-out infinite;
}
.blip.sm { width: 6px; height: 6px; margin: -3px 0 0 -3px; }
.blip::after {
  content: ""; position: absolute; inset: -6px; border-radius: 50%; border: 1px solid var(--c);
  opacity: 0; animation: ripple 6s var(--d) ease-out infinite;
}
@keyframes blip { 0% { opacity: 0; transform: scale(.4); } 4% { opacity: 1; transform: scale(1.15); } 10% { transform: scale(1); } 55% { opacity: .85; } 80%, 100% { opacity: 0; } }
@keyframes ripple { 0% { opacity: 0; transform: scale(.5); } 4% { opacity: .8; } 30%, 100% { opacity: 0; transform: scale(3.2); } }

/* 登录卡片 */
.auth { display: flex; flex-direction: column; justify-content: center; align-items: center; padding: 48px 0; }
.card {
  width: 100%; max-width: 400px; padding: 34px 32px 26px; border-radius: 24px;
  background: linear-gradient(180deg, rgba(22, 27, 38, 0.82), rgba(13, 17, 25, 0.86));
  border: 1px solid var(--line-2); backdrop-filter: blur(22px) saturate(140%);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.06) inset, 0 40px 80px -30px rgba(0, 0, 0, 0.9), 0 0 0 1px rgba(0, 0, 0, 0.4);
  position: relative;
}
.card::before {
  content: ""; position: absolute; inset: -1px; border-radius: 25px; padding: 1px; pointer-events: none;
  background: linear-gradient(160deg, rgba(255, 122, 69, 0.55), rgba(255, 255, 255, 0.04) 35%, rgba(70, 211, 245, 0.25));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
}
.card-head h2 { margin: 0 0 4px; font-size: 22px; font-weight: 650; letter-spacing: -0.01em; }
.card-head p { margin: 0 0 26px; color: var(--text-3); font-size: 13.5px; }
.field { display: block; margin-bottom: 16px; }
.field > span { display: block; margin-bottom: 8px; font-size: 13px; color: var(--text-2); }
.pw { position: relative; }
.pw .input { padding-right: 46px; }
.pw-toggle {
  position: absolute; right: 6px; top: 6px; width: 34px; height: 34px; border-radius: 9px;
  border: 0; background: transparent; color: var(--text-3); cursor: pointer; display: grid; place-items: center;
}
.pw-toggle:hover { color: var(--text); background: var(--surface-2); }
.pw-toggle svg { width: 18px; height: 18px; }
.error { min-height: 20px; margin: 2px 0 10px; color: var(--danger); font-size: 13px; }
.submit { width: 100%; height: 48px; font-size: 15px; border-radius: 13px; }
.card-foot {
  display: flex; justify-content: space-between; gap: 12px; margin-top: 22px; padding-top: 18px;
  border-top: 1px solid var(--line); font-size: 12px; color: var(--text-3);
}
.lock { display: inline-flex; align-items: center; gap: 5px; color: var(--text-2); }
.copyright { margin: 22px 0 0; font-size: 12px; color: var(--text-3); }

.shake { animation: shake .42s var(--ease); }
@keyframes shake { 20% { transform: translateX(-7px); } 40% { transform: translateX(6px); } 60% { transform: translateX(-4px); } 80% { transform: translateX(2px); } }

@media (max-width: 980px) {
  .landing { grid-template-columns: 1fr; padding: 0 20px; }
  .hero { padding-bottom: 8px; }
  .hero-body { padding-top: 36px; }
  .radar { width: 120vw; right: -50vw; top: 220px; opacity: .45; }
  .auth { padding: 24px 0 40px; }
  .features { gap: 12px; }
}
@media (max-width: 480px) {
  .card { padding: 26px 20px 20px; }
  .card-foot { flex-direction: column; }
  .lead { font-size: 15px; }
}