/* 苏酥Ai 永久关停页 — 对齐首页 hero / 蓝焰氛围 */

:root {
  --color-susu-bg: #0e0e10;
  --color-susu-bg-deep: #050508;
  --color-susu-fg: #fafafa;
  --color-susu-accent: #3b82f6;
  --color-susu-accent-muted: #93c5fd;
  --color-susu-highlight: #7dd3fc;
  --color-susu-flame-deep: #1e3a8a;
  --color-susu-flame-mid: #2563eb;
  --color-susu-flame-light: #60a5fa;
}

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

html {
  color-scheme: dark;
  background-color: var(--color-susu-bg-deep);
}

body {
  margin: 0;
  min-height: 100dvh;
  font-family:
    'PingFang SC',
    'Hiragino Sans GB',
    'Microsoft YaHei',
    ui-sans-serif,
    system-ui,
    sans-serif;
  background-color: var(--color-susu-bg-deep);
  color: var(--color-susu-fg);
  -webkit-font-smoothing: antialiased;
}

.page {
  position: relative;
  display: flex;
  min-height: 100dvh;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: clamp(2rem, 6vh, 4rem) 1.5rem;
}

/* ——— Ambient ——— */
.ambient {
  pointer-events: none;
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  background: var(--color-susu-bg-deep);
}

.ambient__wash {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 50% 0%, rgba(255, 255, 255, 0.035) 0%, transparent 55%),
    radial-gradient(
      ellipse 80% 55% at 100% 40%,
      color-mix(in srgb, var(--color-susu-accent) 10%, transparent) 0%,
      transparent 62%
    ),
    radial-gradient(
      ellipse 70% 50% at 0% 80%,
      color-mix(in srgb, var(--color-susu-flame-deep) 10%, transparent) 0%,
      transparent 58%
    );
}

.ambient__layer {
  position: absolute;
  inset: 0;
  mix-blend-mode: screen;
}

.ambient__orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  will-change: transform, opacity;
}

.ambient__orb--a {
  top: -10%;
  right: -4%;
  width: min(560px, 58vw);
  height: min(420px, 48vh);
  background: radial-gradient(
    circle,
    color-mix(in srgb, var(--color-susu-accent) 80%, transparent) 0%,
    transparent 68%
  );
  animation: ambientDriftA 26s ease-in-out infinite alternate;
}

.ambient__orb--b {
  bottom: -14%;
  left: -6%;
  width: min(620px, 62vw);
  height: min(460px, 50vh);
  background: radial-gradient(
    circle,
    color-mix(in srgb, var(--color-susu-flame-mid) 70%, transparent) 0%,
    transparent 70%
  );
  animation: ambientDriftB 32s ease-in-out infinite alternate;
  animation-delay: -12s;
}

.ambient__orb--c {
  top: 42%;
  left: 30%;
  width: min(340px, 36vw);
  height: min(280px, 30vh);
  background: radial-gradient(
    circle,
    color-mix(in srgb, var(--color-susu-highlight) 55%, transparent) 0%,
    transparent 72%
  );
  animation: ambientDriftC 22s ease-in-out infinite alternate;
  animation-delay: -7s;
  opacity: 0.7;
}

.flame {
  position: absolute;
  inset: 0;
  opacity: 0.42;
}

.flame__core {
  position: absolute;
  left: 50%;
  top: 62%;
  width: min(520px, 78vw);
  height: min(520px, 78vw);
  transform: translate(-50%, -50%) scale(1.05);
  filter: blur(64px);
  mix-blend-mode: screen;
}

.flame__blob {
  position: absolute;
  border-radius: 50%;
  will-change: transform, border-radius, opacity;
}

.flame__blob--deep {
  bottom: 0;
  left: 16%;
  width: 75%;
  height: 75%;
  background: var(--color-susu-flame-deep);
  opacity: 0.32;
  animation: morphFire1 2.4s ease-in-out infinite alternate;
}

.flame__blob--mid {
  bottom: 10%;
  left: 26%;
  width: 58%;
  height: 58%;
  background: var(--color-susu-flame-mid);
  opacity: 0.36;
  animation: morphFire2 1.5s ease-in-out infinite alternate;
}

.flame__blob--light {
  bottom: 20%;
  left: 36%;
  width: 42%;
  height: 42%;
  background: var(--color-susu-flame-light);
  opacity: 0.42;
  animation: morphFire3 1s ease-in-out infinite alternate;
}

.ambient__vignette {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 55% at 50% 42%, transparent 0%, rgba(5, 5, 8, 0.35) 72%, rgba(5, 5, 8, 0.72) 100%),
    linear-gradient(180deg, rgba(5, 5, 8, 0.2) 0%, transparent 28%, transparent 72%, rgba(5, 5, 8, 0.55) 100%);
}

/* ——— Hero ——— */
.hero {
  position: relative;
  z-index: 1;
  display: flex;
  width: 100%;
  max-width: 720px;
  flex-direction: column;
  align-items: center;
  text-align: center;
  isolation: isolate;
}

.brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.85rem;
  filter: drop-shadow(0 6px 28px rgba(0, 0, 0, 0.5));
}

.brand__logo {
  display: block;
  width: clamp(56px, 12vw, 72px);
  height: clamp(56px, 12vw, 72px);
  object-fit: contain;
}

.brand__name {
  font-size: clamp(26px, 5vw, 34px);
  font-weight: 600;
  letter-spacing: 0.14em;
  background: linear-gradient(95deg, #ffffff 0%, #f9a8d4 42%, #c084fc 78%, #e9d5ff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.kicker {
  margin: 2rem 0 0;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: var(--color-susu-accent-muted);
  text-shadow: 0 2px 16px rgba(0, 0, 0, 0.5);
}

.title {
  margin: 1.35rem 0 0;
  letter-spacing: 0.04em;
}

.title__main {
  display: block;
  font-size: clamp(36px, 8vw, 56px);
  font-weight: 700;
  line-height: 1.12;
  color: #fff;
  text-shadow:
    0 2px 4px rgba(0, 0, 0, 0.55),
    0 10px 36px rgba(0, 0, 0, 0.4);
}

.title__accent {
  display: block;
  margin-top: 0.22em;
  font-size: clamp(28px, 6.2vw, 44px);
  font-weight: 700;
  line-height: 1.15;
  background: linear-gradient(100deg, #7dd3fc 0%, #60a5fa 35%, #3b82f6 65%, #2563eb 100%);
  background-size: 200% auto;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.45));
  animation: titleShine 8s ease-in-out infinite;
}

.desc {
  margin: 2rem 0 0;
  max-width: 34rem;
  font-size: clamp(15px, 2.2vw, 18px);
  line-height: 1.85;
  letter-spacing: 0.03em;
  color: rgba(255, 255, 255, 0.5);
  text-wrap: balance;
  text-shadow: 0 2px 14px rgba(0, 0, 0, 0.4);
}

.desc__break {
  display: none;
}

@media (min-width: 640px) {
  .desc__break {
    display: inline;
  }
}

.footer {
  position: relative;
  z-index: 1;
  margin-top: clamp(3rem, 8vh, 5rem);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.28);
}

/* ——— Motion ——— */
.reveal {
  animation: heroIn 0.85s cubic-bezier(0.22, 0.61, 0.18, 1) both;
  animation-delay: var(--delay, 0s);
}

@keyframes ambientDriftA {
  0% {
    transform: translate(0, 0) scale(1);
    opacity: 0.4;
  }
  100% {
    transform: translate(-4vw, 3vh) scale(1.06);
    opacity: 0.58;
  }
}

@keyframes ambientDriftB {
  0% {
    transform: translate(0, 0) scale(1);
    opacity: 0.34;
  }
  100% {
    transform: translate(5vw, -2.5vh) scale(0.94);
    opacity: 0.5;
  }
}

@keyframes ambientDriftC {
  0% {
    transform: translate(0, 0) scale(1);
    opacity: 0.22;
  }
  100% {
    transform: translate(3vw, -4vh) scale(1.08);
    opacity: 0.4;
  }
}

@keyframes morphFire1 {
  0% {
    border-radius: 40% 60% 70% 30% / 40% 50% 60% 50%;
    transform: translateY(10px) scale(0.95);
  }
  100% {
    border-radius: 60% 40% 30% 70% / 60% 30% 70% 40%;
    transform: translateY(-15px) scale(1.05);
  }
}

@keyframes morphFire2 {
  0% {
    border-radius: 50% 50% 40% 60% / 60% 40% 50% 50%;
    transform: translateY(20px) scale(0.9) rotate(-10deg);
  }
  100% {
    border-radius: 30% 70% 60% 40% / 40% 60% 40% 60%;
    transform: translateY(-30px) scale(1.1) rotate(10deg);
  }
}

@keyframes morphFire3 {
  0% {
    border-radius: 60% 40% 50% 50% / 40% 40% 60% 60%;
    transform: translateY(0) scale(0.85) rotate(25deg);
    opacity: 0.3;
  }
  100% {
    border-radius: 40% 60% 40% 60% / 60% 60% 40% 40%;
    transform: translateY(-10px) scale(1.15) rotate(-25deg);
    opacity: 0.48;
  }
}

@keyframes titleShine {
  0%,
  100% {
    background-position: 0% center;
  }
  50% {
    background-position: 100% center;
  }
}

@keyframes heroIn {
  from {
    opacity: 0;
    transform: translateY(18px);
    filter: blur(5px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
    filter: blur(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .ambient__orb,
  .flame__blob,
  .title__accent,
  .reveal {
    animation: none !important;
  }

  .ambient__orb {
    opacity: 0.4;
  }

  .reveal {
    opacity: 1;
    filter: none;
    transform: none;
  }
}