:root {
  --bg: #050506;
  --panel: #111216;
  --gold: #c9ccd1;
  --gold-soft: #f3f4f6;
  --red: #3a3a3f;
  --red-soft: #7b7f89;
  --text: #eceef2;
  --muted: #b6bac2;
  --line: #3b3f48;
  --ink: #101116;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Noto Serif SC", "STKaiti", "Songti SC", serif;
  color: var(--text);
  background:
    radial-gradient(circle at 12% 18%, rgba(255, 255, 255, 0.09), transparent 42%),
    radial-gradient(circle at 84% 14%, rgba(222, 226, 235, 0.08), transparent 36%),
    radial-gradient(circle at 52% 100%, rgba(18, 20, 25, 0.82), transparent 54%),
    linear-gradient(160deg, rgba(255, 255, 255, 0.03), transparent 32%),
    repeating-linear-gradient(
      -24deg,
      rgba(255, 255, 255, 0.015) 0,
      rgba(255, 255, 255, 0.015) 2px,
      transparent 2px,
      transparent 12px
    ),
    var(--bg);
  min-height: 100vh;
}

body::before,
body::after {
  content: "";
  position: fixed;
  z-index: -1;
  opacity: 0.22;
  background-repeat: no-repeat;
  background-size: contain;
  pointer-events: none;
  filter: drop-shadow(0 0 28px rgba(240, 242, 246, 0.13));
}

body::before {
  width: 360px;
  height: 360px;
  left: -84px;
  top: -70px;
  background-image: url("../assets/taiji-mono.svg");
  animation: mystic-rotate-a 40s linear infinite;
}

body::after {
  width: 530px;
  height: 530px;
  right: -162px;
  bottom: -162px;
  opacity: 0.43;
  background-image: url("../assets/bagua-mono.svg");
  filter: drop-shadow(0 0 38px rgba(242, 244, 248, 0.24)) brightness(1.16) contrast(1.1);
  animation: mystic-rotate-b 58s linear infinite;
}

@keyframes mystic-rotate-a {
  0% { transform: translateY(0) rotate(0deg); }
  25% { transform: translateY(6px) rotate(90deg); }
  50% { transform: translateY(12px) rotate(180deg); }
  75% { transform: translateY(6px) rotate(270deg); }
  100% { transform: translateY(0) rotate(360deg); }
}

@keyframes mystic-rotate-b {
  0% { transform: translateY(0) rotate(0deg); }
  25% { transform: translateY(-6px) rotate(-90deg); }
  50% { transform: translateY(-12px) rotate(-180deg); }
  75% { transform: translateY(-6px) rotate(-270deg); }
  100% { transform: translateY(0) rotate(-360deg); }
}

.container {
  position: relative;
  width: min(1120px, 92vw);
  margin: 0 auto;
  padding: 20px 0 48px;
}

.container::before {
  content: "";
  position: absolute;
  inset: 120px 0 auto;
  height: 620px;
  pointer-events: none;
  background:
    radial-gradient(circle at 28% 18%, rgba(243, 244, 246, 0.08), transparent 40%),
    radial-gradient(circle at 70% 70%, rgba(136, 142, 155, 0.12), transparent 44%),
    linear-gradient(180deg, transparent, rgba(255, 255, 255, 0.025) 48%, transparent 100%);
  z-index: -1;
}

.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 0;
}

.header-right {
  display: flex;
  align-items: flex-end;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.brand {
  color: var(--gold-soft);
  font-size: 1.2rem;
  letter-spacing: 1.4px;
  text-shadow: 0 0 16px rgba(243, 244, 246, 0.26);
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.nav a {
  color: var(--text);
  text-decoration: none;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px 14px;
  font-size: 0.92rem;
  background:
    linear-gradient(145deg, rgba(29, 31, 38, 0.84), rgba(12, 13, 17, 0.94));
  box-shadow: inset 0 0 0 1px rgba(233, 236, 241, 0.12);
  transition: all 0.24s ease;
}

.nav a:hover {
  border-color: var(--gold-soft);
  color: var(--gold-soft);
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.32), inset 0 0 0 1px rgba(243, 244, 246, 0.28);
}

.auth-box {
  min-width: 260px;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 8px;
  background:
    linear-gradient(145deg, rgba(23, 25, 32, 0.9), rgba(12, 13, 17, 0.95));
  box-shadow: inset 0 0 0 1px rgba(232, 235, 240, 0.1);
}

.auth-row {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
}

.auth-btn {
  padding: 6px 10px;
  font-size: 0.82rem;
}

.auth-email {
  color: var(--gold-soft);
  font-size: 0.84rem;
}

.auth-usage {
  display: none;
}

.auth-overlay {
  position: fixed;
  inset: 0;
  background: rgba(5, 5, 5, 0.55);
  backdrop-filter: blur(2px);
  z-index: 1100;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.22s ease;
}

.auth-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.auth-panel {
  position: fixed;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: min(440px, calc(100vw - 32px));
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 16px;
  background: linear-gradient(145deg, rgba(28, 22, 16, 0.96), rgba(10, 9, 8, 0.98));
  box-shadow: 0 24px 56px rgba(0, 0, 0, 0.45);
  z-index: 1200;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.22s ease, transform 0.22s ease;
}

.auth-panel.active {
  opacity: 1;
  pointer-events: auto;
  transform: translate(-50%, -50%);
}

.auth-switch-row {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin-bottom: 10px;
}

.auth-switch-btn {
  min-width: 112px;
}

.auth-actions {
  justify-content: flex-end;
}

.auth-code-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
  align-items: center;
}

.auth-code-row input {
  min-width: 0;
}

.hero,
.card,
.result,
.about-box {
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(145deg, rgba(23, 25, 30, 0.88), rgba(11, 12, 16, 0.95));
  border: 1px solid var(--line);
  border-radius: 16px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4), inset 0 0 0 1px rgba(226, 230, 238, 0.08);
}

.hero::before,
.card::before,
.result::before,
.about-box::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(243, 244, 246, 0.65), transparent);
  pointer-events: none;
}

.hero {
  padding: 24px;
  margin-top: 16px;
}

.hero h1 {
  margin: 0 0 10px;
  color: var(--gold-soft);
  font-size: clamp(1.45rem, 3.5vw, 2.2rem);
  text-shadow: 0 0 18px rgba(240, 243, 247, 0.2);
  letter-spacing: 0.4px;
}

.hero p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.hero-intro {
  margin-top: 14px;
  font-size: 0.95rem;
  color: #c8ccd4;
  line-height: 1.95;
  text-align: center;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
  margin-top: 16px;
}

.card {
  padding: 18px;
}

.card h3 {
  margin: 0 0 8px;
  color: var(--gold-soft);
  letter-spacing: 0.4px;
}

.card h3 .price-tag {
  font-size: 0.8em;
  color: #cfd3dc;
  font-weight: 600;
}

.card p {
  margin: 0 0 12px;
  color: var(--muted);
  line-height: 1.6;
}

.btn {
  border: 1px solid #8d929d;
  color: #090a0d;
  background: linear-gradient(140deg, #f0f2f6, #c5cad3);
  border-radius: 10px;
  padding: 10px 14px;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, filter 0.2s ease;
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.35);
  filter: saturate(1.05);
}

.btn.secondary {
  color: var(--text);
  background: linear-gradient(145deg, #2a2d35, #11131a);
  border-color: var(--line);
}

.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 12px;
  margin-top: 12px;
}

label {
  display: grid;
  gap: 8px;
  color: var(--muted);
  font-size: 0.92rem;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px;
  color: var(--text);
  background: linear-gradient(180deg, #151821, #0f1118);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--gold);
  box-shadow: 0 0 0 2px rgba(214, 168, 77, 0.18);
}

.actions {
  margin-top: 14px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.card .actions {
  justify-content: center;
}

.result {
  margin-top: 16px;
  padding: 18px;
  line-height: 1.8;
  background:
    linear-gradient(145deg, rgba(27, 29, 35, 0.93), rgba(11, 12, 16, 0.96));
}

.hexagram {
  display: grid;
  gap: 8px;
  margin-top: 12px;
}

.line-yang,
.line-yin {
  height: 8px;
  border-radius: 999px;
  background: var(--gold);
}

.line-yin {
  background: linear-gradient(to right, var(--gold) 0 42%, transparent 42% 58%, var(--gold) 58% 100%);
}

.package-price {
  color: var(--gold-soft);
  font-size: 1.7rem;
  margin: 8px 0;
}

.muted {
  color: var(--muted);
}

ul.clean {
  margin: 8px 0 0;
  padding-left: 18px;
  color: var(--muted);
}

.footer {
  margin-top: 26px;
  color: #a9aeb8;
  font-size: 0.88rem;
  text-align: center;
  letter-spacing: 0.4px;
}

.footer-links {
  margin-top: 10px;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
}

.footer-links a {
  color: var(--gold-soft);
  text-decoration: none;
  border-bottom: 1px solid rgba(243, 244, 246, 0.35);
  padding-bottom: 1px;
}

.footer-links a:hover {
  color: #ffffff;
  border-bottom-color: rgba(255, 255, 255, 0.78);
}

.legal-note {
  margin-top: 8px;
  color: #a8aeb9;
  font-size: 0.82rem;
  line-height: 1.55;
}

.legal-layout {
  margin-top: 16px;
  padding: 22px;
}

.legal-layout h1 {
  margin: 0 0 10px;
  color: var(--gold-soft);
  font-size: clamp(1.35rem, 3.2vw, 2rem);
}

.legal-updated {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 0.9rem;
}

.legal-layout h2 {
  margin: 16px 0 8px;
  color: #e5e8ee;
  font-size: 1.05rem;
}

.legal-layout p,
.legal-layout li {
  color: var(--muted);
  line-height: 1.72;
}

.legal-layout ul {
  margin: 8px 0 0;
  padding-left: 20px;
}

.contact-form {
  margin-top: 14px;
}

.fortune-anim-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.72);
  backdrop-filter: blur(2px);
  z-index: 1500;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}

.fortune-anim-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.fortune-anim-center {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: min(560px, calc(100vw - 28px));
  min-height: 230px;
  display: grid;
  place-items: center;
}

.fortune-anim-scene {
  width: 100%;
  display: none;
}

.fortune-anim-scene.active {
  display: block;
}

#coin-anim-scene {
  display: none;
  grid-template-columns: repeat(3, 1fr);
  align-items: end;
  gap: 14px;
}

#coin-anim-scene.active {
  display: grid;
}

.coin-wrap {
  display: grid;
  place-items: center;
  perspective: 900px;
}

.coin {
  width: 92px;
  height: 92px;
  border-radius: 999px;
  transform-style: preserve-3d;
}

.coin.anim-front {
  animation: coin-throw-front 3s cubic-bezier(0.2, 0.75, 0.15, 1) forwards;
}

.coin.anim-back {
  animation: coin-throw-back 3s cubic-bezier(0.2, 0.75, 0.15, 1) forwards;
}

.coin-wrap.delay-0 .coin { animation-delay: 0s; }
.coin-wrap.delay-1 .coin { animation-delay: 0.12s; }
.coin-wrap.delay-2 .coin { animation-delay: 0.24s; }

.coin-face {
  position: absolute;
  inset: 0;
  border-radius: 999px;
  display: grid;
  place-items: center;
  border: 3px solid #be9440;
  color: #f8e8c3;
  font-size: 1rem;
  letter-spacing: 1px;
  font-weight: 700;
  background: radial-gradient(circle at 35% 35%, #f4d895, #8d5d1d 68%);
  box-shadow: 0 10px 22px rgba(0, 0, 0, 0.42), inset 0 0 0 2px rgba(65, 45, 14, 0.35);
  backface-visibility: hidden;
  text-shadow: 0 1px 0 rgba(0, 0, 0, 0.45);
}

.coin-face::after {
  content: "";
  width: 16px;
  height: 16px;
  border-radius: 2px;
  background: rgba(45, 30, 8, 0.75);
  box-shadow: inset 0 0 0 1px rgba(219, 180, 102, 0.28);
}

.coin-back {
  transform: rotateY(180deg);
  background: radial-gradient(circle at 35% 35%, #e2bf78, #5f1420 72%);
}

@keyframes coin-throw-front {
  0%   { transform: translateY(0) rotateX(0deg) rotateY(0deg); }
  25%  { transform: translateY(-95px) rotateX(420deg) rotateY(340deg); }
  50%  { transform: translateY(-56px) rotateX(860deg) rotateY(760deg); }
  75%  { transform: translateY(-18px) rotateX(1220deg) rotateY(1100deg); }
  100% { transform: translateY(0) rotateX(1440deg) rotateY(1080deg); }
}

@keyframes coin-throw-back {
  0%   { transform: translateY(0) rotateX(0deg) rotateY(180deg); }
  25%  { transform: translateY(-95px) rotateX(420deg) rotateY(520deg); }
  50%  { transform: translateY(-56px) rotateX(860deg) rotateY(940deg); }
  75%  { transform: translateY(-18px) rotateX(1220deg) rotateY(1280deg); }
  100% { transform: translateY(0) rotateX(1440deg) rotateY(1260deg); }
}

#lot-anim-scene {
  display: none;
}

#lot-anim-scene.active {
  display: block;
}

.lot-shaker {
  width: 220px;
  height: 220px;
  margin: 0 auto;
  position: relative;
  animation: cup-shake 1s ease-in-out 3;
  transform-origin: center bottom;
}

.lot-cup {
  position: absolute;
  left: 50%;
  top: 40px;
  width: 146px;
  height: 146px;
  transform: translateX(-50%);
  border-radius: 18px 18px 30px 30px;
  border: 2px solid #bf9542;
  background: linear-gradient(170deg, #2e1f14, #7b141f);
  box-shadow: 0 14px 26px rgba(0, 0, 0, 0.45);
}

.lot-stick {
  position: absolute;
  width: 10px;
  height: 102px;
  border-radius: 6px;
  background: linear-gradient(180deg, #dfbf7c, #8c6027);
  left: 50%;
  top: 12px;
  transform-origin: center bottom;
}

.lot-stick-a { transform: translateX(-40px) rotate(-8deg); }
.lot-stick-b { transform: translateX(-15px) rotate(-2deg); }
.lot-stick-c { transform: translateX(10px) rotate(4deg); }
.lot-stick-d { transform: translateX(35px) rotate(10deg); }

.lot-drop-stick {
  position: absolute;
  width: 10px;
  height: 116px;
  border-radius: 6px;
  background: linear-gradient(180deg, #efd79f, #94662d);
  left: 50%;
  top: 20px;
  transform: translateX(-50%) rotate(6deg);
  opacity: 0;
  animation: lot-drop 3s ease forwards;
}

@keyframes cup-shake {
  0% { transform: rotate(0deg); }
  20% { transform: rotate(-8deg); }
  40% { transform: rotate(8deg); }
  60% { transform: rotate(-6deg); }
  80% { transform: rotate(6deg); }
  100% { transform: rotate(0deg); }
}

@keyframes lot-drop {
  0% { opacity: 0; transform: translateX(-50%) translateY(0) rotate(6deg); }
  36% { opacity: 0; }
  46% { opacity: 1; transform: translateX(-50%) translateY(0) rotate(6deg); }
  76% { opacity: 1; transform: translateX(-50%) translateY(95px) rotate(18deg); }
  100% { opacity: 1; transform: translateX(-50%) translateY(116px) rotate(24deg); }
}

@media (max-width: 640px) {
  .header {
    flex-direction: column;
    align-items: flex-start;
  }

  .nav {
    width: 100%;
  }

  .header-right {
    width: 100%;
    align-items: stretch;
  }

  .auth-box {
    width: 100%;
  }

  .auth-row,
  .auth-actions {
    justify-content: flex-start;
    text-align: left;
  }

  .coin {
    width: 72px;
    height: 72px;
  }

  .coin-face {
    font-size: 0.85rem;
  }

  .coin-face::after {
    width: 13px;
    height: 13px;
  }

  .lot-shaker {
    width: 184px;
    height: 188px;
  }

  .lot-cup {
    width: 124px;
    height: 124px;
  }

  .legal-layout {
    padding: 16px;
  }

  .footer-links {
    gap: 8px 12px;
  }
}