:root {
  color-scheme: light;
  --ink: #3b1f68;
  --violet: #7c3fe4;
  --violet-deep: #52258f;
  --lilac: #d9b7ff;
  --rose: #ff8fc9;
  --gold: #ffd66b;
  --cyan: #aef4ff;
  --white: #fff8ff;
  --glass: rgba(255, 248, 255, 0.52);
  --glass-strong: rgba(255, 255, 255, 0.72);
  --shadow: 0 26px 68px rgba(63, 29, 126, 0.28);
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
}

body {
  margin: 0;
  font-family:
    ui-rounded,
    "Hiragino Sans GB",
    "Microsoft YaHei",
    "PingFang SC",
    system-ui,
    sans-serif;
  color: var(--ink);
  background: #8b64dd url("./assets/background-clean.png") center / cover fixed no-repeat;
  overflow-x: hidden;
}

body::before,
body::after {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  content: "";
}

body::before {
  background:
    linear-gradient(90deg, rgba(61, 20, 112, 0.28), rgba(255, 255, 255, 0.04) 46%, rgba(255, 255, 255, 0)),
    linear-gradient(180deg, rgba(68, 20, 126, 0.18), rgba(255, 255, 255, 0.08) 45%, rgba(54, 20, 98, 0.2));
}

body::after {
  background-image:
    radial-gradient(circle at 14% 18%, rgba(255, 214, 107, 0.42) 0 1px, transparent 2px),
    radial-gradient(circle at 23% 84%, rgba(174, 244, 255, 0.52) 0 1px, transparent 2px),
    radial-gradient(circle at 82% 12%, rgba(255, 255, 255, 0.7) 0 1px, transparent 2px);
  background-size: 180px 180px, 220px 220px, 260px 260px;
  mix-blend-mode: screen;
  opacity: 0.85;
}

.page-shell {
  position: relative;
  display: grid;
  min-height: 100svh;
  padding: clamp(18px, 4vw, 56px);
  place-items: center;
}

.nav-board {
  width: min(430px, 100%);
  padding: clamp(22px, 4vw, 34px);
  border: 1px solid rgba(255, 255, 255, 0.72);
  border-radius: 24px;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.72), rgba(242, 221, 255, 0.42)),
    rgba(255, 255, 255, 0.36);
  box-shadow: var(--shadow), inset 0 1px 0 rgba(255, 255, 255, 0.86);
  backdrop-filter: blur(18px) saturate(1.2);
  text-align: center;
}

h1 {
  margin: 0;
  color: var(--white);
  font-size: clamp(2.25rem, 7vw, 4.3rem);
  line-height: 0.98;
  letter-spacing: 0;
  text-shadow:
    0 3px 0 var(--violet),
    0 7px 0 rgba(82, 37, 143, 0.42),
    0 16px 32px rgba(82, 37, 143, 0.4);
  -webkit-text-stroke: 1px rgba(82, 37, 143, 0.32);
}

.tagline {
  margin: 14px 0 24px;
  color: #58338c;
  font-size: 0.98rem;
  font-weight: 700;
}

.nav-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.nav-link {
  position: relative;
  display: flex;
  min-height: 58px;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 15px 16px;
  border: 2px solid rgba(255, 255, 255, 0.92);
  border-radius: 18px;
  color: var(--ink);
  text-decoration: none;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.95), rgba(243, 225, 255, 0.82)),
    var(--glass-strong);
  box-shadow:
    0 8px 0 rgba(111, 56, 189, 0.22),
    0 16px 28px rgba(92, 43, 152, 0.18);
  transition:
    transform 180ms ease,
    box-shadow 180ms ease,
    border-color 180ms ease,
    background 180ms ease;
}

.nav-link::after {
  position: absolute;
  right: 10px;
  bottom: 8px;
  width: 7px;
  height: 7px;
  border-radius: 999px;
  background: var(--gold);
  box-shadow: 0 0 14px rgba(255, 214, 107, 0.9);
  content: "";
  opacity: 0;
  transform: scale(0.5);
  transition: inherit;
}

.nav-link i,
.nav-link svg {
  width: 22px;
  height: 22px;
  color: var(--violet);
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2.4;
}

.nav-link span {
  overflow-wrap: anywhere;
  font-size: 0.96rem;
  font-weight: 850;
  letter-spacing: 0;
}

.nav-link:hover,
.nav-link:focus-visible {
  border-color: rgba(255, 143, 201, 0.96);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(247, 217, 255, 0.92)),
    var(--white);
  box-shadow:
    0 8px 0 rgba(124, 63, 228, 0.34),
    0 18px 34px rgba(124, 63, 228, 0.28),
    0 0 0 5px rgba(255, 255, 255, 0.2);
  transform: translateY(-3px);
}

.nav-link:hover::after,
.nav-link:focus-visible::after {
  opacity: 1;
  transform: scale(1);
}

.nav-link:focus-visible {
  outline: 3px solid rgba(174, 244, 255, 0.92);
  outline-offset: 4px;
}

@media (max-width: 760px) {
  body {
    background-attachment: scroll;
    background-position: right center;
  }

  body::before {
    background:
      linear-gradient(180deg, rgba(57, 15, 112, 0.08), rgba(57, 15, 112, 0.42)),
      linear-gradient(90deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0));
  }

  .page-shell {
    min-height: 100dvh;
    padding: 16px;
    place-items: center;
  }

  .nav-board {
    width: min(430px, calc(100vw - 32px));
    padding: 20px;
    border-radius: 22px;
  }

  h1 {
    font-size: clamp(2.15rem, 13vw, 3.35rem);
  }

  .tagline {
    margin-bottom: 18px;
  }

  .nav-grid {
    gap: 12px;
  }

  .nav-link {
    min-height: 54px;
    padding: 12px;
    border-radius: 16px;
  }

  .nav-link span {
    font-size: 0.9rem;
  }

}