:root {
  --teal: #009b86;
  --teal-dark: #006b63;
  --mint: #71e4d1;
  --orange: #ff8a00;
  --gold: #ffc433;
  --ink: #07334a;
  --paper: #ffffff;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  background:
    radial-gradient(circle at 82% 8%, rgba(113, 228, 209, 0.5), transparent 26rem),
    radial-gradient(circle at 10% 100%, rgba(255, 196, 51, 0.18), transparent 22rem),
    linear-gradient(160deg, #f8fffd 0%, #e4faf6 42%, #20cbb4 100%);
}

.share-preview {
  position: fixed;
  top: 0;
  left: 0;
  width: 300px;
  height: 300px;
  object-fit: cover;
  opacity: 0.001;
  pointer-events: none;
  z-index: -1;
}

.page {
  width: min(720px, 100%);
  margin: 0 auto;
  padding: 16px clamp(16px, 4vw, 28px) 38px;
}

.hero {
  display: block;
  min-height: 0;
  text-align: center;
}

.brand {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-bottom: 16px;
  color: var(--teal-dark);
}

.brand__mark {
  display: block;
  width: 48px;
  height: 48px;
  border-radius: 14px;
  object-fit: cover;
  object-position: center;
  background: #fff;
  box-shadow: 0 8px 18px rgba(0, 107, 99, 0.12);
}

.brand__text {
  text-align: left;
}

.brand__text strong,
.brand__text span {
  display: block;
}

.brand__text strong {
  font-size: clamp(25px, 7vw, 34px);
  line-height: 1.05;
  letter-spacing: 0;
}

.brand__text span {
  margin-top: 3px;
  font-size: clamp(12px, 3.4vw, 15px);
  font-weight: 800;
  letter-spacing: 0;
}

h1 {
  margin: 0 auto;
  max-width: 9em;
  color: var(--teal-dark);
  font-size: clamp(32px, 9.2vw, 54px);
  line-height: 1.06;
  letter-spacing: 0;
  text-shadow: 0 10px 22px rgba(0, 107, 99, 0.16);
}

.subtitle {
  width: fit-content;
  margin: 14px auto 0;
  padding: 9px 16px;
  border-radius: 999px;
  color: #fff;
  font-size: clamp(16px, 4.3vw, 21px);
  font-weight: 900;
  background: linear-gradient(90deg, var(--teal-dark), var(--teal), #ffb21f);
}

.lottery {
  display: block;
  margin-top: 24px;
}

.wheel-shell {
  position: relative;
  aspect-ratio: 1;
  width: min(86vw, 372px);
  margin: 0 auto;
}

.pointer {
  position: absolute;
  z-index: 4;
  top: -9px;
  left: 50%;
  width: 0;
  height: 0;
  transform: translateX(-50%);
  border-right: 22px solid transparent;
  border-left: 22px solid transparent;
  border-top: 42px solid #ff6b00;
  filter: drop-shadow(0 5px 4px rgba(0, 0, 0, 0.16));
}

.wheel {
  position: absolute;
  inset: 0;
  border: clamp(8px, 2.8vw, 12px) solid #fff;
  border-radius: 50%;
  overflow: hidden;
  background: conic-gradient(
    from -90deg,
    #ff9b16 0deg 72deg,
    #31c5aa 72deg 144deg,
    #ffc433 144deg 216deg,
    #18a990 216deg 288deg,
    #ffcf68 288deg 360deg
  );
  box-shadow: 0 24px 50px rgba(0, 107, 99, 0.28);
  transition: transform 4.2s cubic-bezier(0.12, 0.78, 0.18, 1);
}

.slice {
  position: absolute;
  inset: 0;
  color: #fff;
  font-weight: 900;
  text-align: center;
  line-height: 1.22;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.18);
}

.slice span {
  position: absolute;
  top: var(--label-y);
  left: var(--label-x);
  display: grid;
  width: clamp(72px, 22vw, 96px);
  min-height: 48px;
  place-items: center;
  font-size: clamp(13px, 3.8vw, 18px);
  letter-spacing: 0;
  transform: translate(-50%, -50%) rotate(var(--label-rotate));
}

.slice--0 {
  --label-x: 29%;
  --label-y: 35%;
  --label-rotate: -54deg;
}

.slice--1 {
  --label-x: 62%;
  --label-y: 27%;
  --label-rotate: 18deg;
}

.slice--2 {
  --label-x: 78%;
  --label-y: 52%;
  --label-rotate: 90deg;
}

.slice--3 {
  --label-x: 61%;
  --label-y: 74%;
  --label-rotate: 162deg;
}

.slice--4 {
  --label-x: 29%;
  --label-y: 65%;
  --label-rotate: 234deg;
}

.spin-button {
  position: absolute;
  z-index: 5;
  top: 50%;
  left: 50%;
  width: 132px;
  height: 132px;
  transform: translate(-50%, -50%);
  border: 7px solid #fff;
  border-radius: 50%;
  color: #fff;
  font-size: 24px;
  font-weight: 900;
  background: linear-gradient(145deg, #ffb21f, #ff6b00);
  box-shadow: 0 14px 28px rgba(255, 106, 0, 0.28);
  cursor: pointer;
}

.spin-button:disabled {
  cursor: not-allowed;
  opacity: 0.86;
}

.activity-card {
  margin-top: 24px;
  padding: clamp(22px, 4vw, 34px);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 22px 52px rgba(0, 107, 99, 0.18);
}

.win-line {
  margin: 0;
  color: var(--teal-dark);
  font-size: clamp(22px, 6vw, 34px);
  font-weight: 900;
  text-align: center;
}

.win-line strong {
  color: #ff5f1a;
}

.result-feedback {
  margin: 18px 0 20px;
  padding: 18px 16px;
  border: 2px solid rgba(255, 138, 0, 0.28);
  border-radius: 8px;
  text-align: center;
  background:
    radial-gradient(circle at 50% 0%, rgba(255, 196, 51, 0.22), transparent 68%),
    #fff8ec;
}

.result-feedback[hidden] {
  display: none;
}

.result-feedback__label {
  margin: 0 0 8px;
  color: var(--teal);
  font-size: clamp(18px, 4.8vw, 24px);
  font-weight: 900;
}

.result-feedback strong,
.result-feedback span {
  display: block;
}

.result-feedback strong {
  color: #ff6b00;
  font-size: clamp(42px, 12vw, 62px);
  line-height: 1;
}

.result-feedback span {
  margin-top: 8px;
  color: var(--ink);
  font-size: clamp(24px, 7vw, 34px);
  font-weight: 900;
}

.chance-line {
  margin: 8px 0 20px;
  color: #0b776f;
  font-size: clamp(15px, 4vw, 18px);
  font-weight: 800;
  text-align: center;
}

.prizes {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.prize {
  display: grid;
  min-height: 46px;
  place-items: center;
  padding: 9px 12px;
  border-radius: 999px;
  color: #07334a;
  font-size: clamp(15px, 4vw, 18px);
  font-weight: 800;
  text-align: center;
  background: #fff2df;
}

.features {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid rgba(0, 155, 134, 0.22);
}

.features p {
  margin: 10px 0;
  font-size: clamp(17px, 2vw, 23px);
  font-weight: 800;
}

.modal {
  position: fixed;
  z-index: 20;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 20px;
  background: rgba(4, 33, 44, 0.54);
}

.modal[hidden] {
  display: none;
}

.modal__panel {
  position: relative;
  width: min(420px, 100%);
  padding: 34px 26px 28px;
  border-radius: 8px;
  text-align: center;
  background:
    radial-gradient(circle at 50% 0%, rgba(255, 196, 51, 0.36), transparent 36%),
    #fff;
  box-shadow: 0 26px 70px rgba(0, 0, 0, 0.26);
}

.modal__close {
  position: absolute;
  top: 10px;
  right: 12px;
  border: 0;
  color: #446;
  font-size: 30px;
  background: transparent;
  cursor: pointer;
}

.modal__label {
  margin: 0;
  color: var(--teal);
  font-size: 20px;
  font-weight: 900;
}

.modal h2 {
  margin: 8px 0;
  color: #ff6b00;
  font-size: 58px;
  line-height: 1;
}

.modal__award {
  margin: 0 0 22px;
  font-size: 28px;
  font-weight: 900;
}

.modal__action {
  border: 0;
  border-radius: 999px;
  padding: 13px 32px;
  color: #fff;
  font-size: 18px;
  font-weight: 900;
  background: linear-gradient(90deg, var(--teal), var(--orange));
  cursor: pointer;
}

.confetti {
  position: fixed;
  z-index: 30;
  top: -10px;
  width: 9px;
  height: 14px;
  border-radius: 2px;
  animation: fall 1.8s linear forwards;
}

@keyframes fall {
  to {
    transform: translate3d(var(--x), 110vh, 0) rotate(520deg);
    opacity: 0;
  }
}

@media (max-width: 820px) {
  .hero {
    min-height: auto;
  }
}

@media (max-width: 480px) {
  .page {
    padding-top: 14px;
  }

  .brand {
    margin-bottom: 14px;
  }

  .brand__mark {
    width: 44px;
    height: 44px;
  }

  .lottery {
    margin-top: 22px;
  }

  .spin-button {
    width: 104px;
    height: 104px;
    font-size: 19px;
  }

  .prizes {
    grid-template-columns: 1fr;
  }

  .slice span {
    width: clamp(66px, 20vw, 76px);
    min-height: 46px;
  }
}