/* 星辉召唤 — 设计令牌 */
:root {
  --bg: #0b1026;
  --bg-deep: #070b1c;
  --bg-soft: #141b3d;
  --ink: #f4f0ff;
  --ink-muted: #a8a0c8;
  --sakura: #ff6b9d;
  --cyan: #3de0ff;
  --gold: #ffd76a;
  --violet: #b48cff;
  --line: rgba(168, 160, 200, 0.18);
  --shadow: 0 24px 60px rgba(4, 8, 24, 0.45);
  --radius: 18px;
  --font-display: "Noto Serif SC", "Songti SC", "STSong", "SimSun", serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --max: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(61, 224, 255, 0.12), transparent 55%),
    radial-gradient(900px 500px at 10% 20%, rgba(255, 107, 157, 0.10), transparent 50%),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-deep) 100%);
  overflow-x: hidden;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

/* 星空与花瓣背景 */
.stars,
.petals {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 0;
}

.stars {
  background-image:
    radial-gradient(1.5px 1.5px at 12% 18%, rgba(255, 255, 255, 0.7), transparent),
    radial-gradient(1px 1px at 28% 62%, rgba(255, 255, 255, 0.5), transparent),
    radial-gradient(1.5px 1.5px at 48% 30%, rgba(255, 255, 255, 0.55), transparent),
    radial-gradient(1px 1px at 66% 72%, rgba(255, 255, 255, 0.45), transparent),
    radial-gradient(1.5px 1.5px at 82% 22%, rgba(255, 255, 255, 0.65), transparent),
    radial-gradient(1px 1px at 92% 58%, rgba(255, 255, 255, 0.4), transparent);
  opacity: 0.55;
}

.petals {
  overflow: hidden;
}

.petal {
  position: absolute;
  top: -20px;
  width: 10px;
  height: 10px;
  border-radius: 80% 0 80% 0;
  background: linear-gradient(135deg, rgba(255, 154, 188, 0.9), rgba(255, 107, 157, 0.35));
  opacity: 0.55;
  animation: fall linear infinite;
}

@keyframes fall {
  0% {
    transform: translate3d(0, -20px, 0) rotate(0deg);
    opacity: 0;
  }
  10% {
    opacity: 0.6;
  }
  100% {
    transform: translate3d(var(--drift, 40px), 110vh, 0) rotate(360deg);
    opacity: 0;
  }
}

/* 导航 */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 1rem clamp(1.25rem, 4vw, 3rem);
  backdrop-filter: blur(14px);
  background: rgba(11, 16, 38, 0.55);
  border-bottom: 1px solid var(--line);
}

.nav__brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--font-display);
  font-size: 1.15rem;
  letter-spacing: 0.08em;
}

.nav__mark {
  color: var(--gold);
  text-shadow: 0 0 12px rgba(255, 215, 106, 0.65);
}

.nav__links {
  display: flex;
  gap: 1.5rem;
  font-size: 0.95rem;
  color: var(--ink-muted);
}

.nav__links a {
  position: relative;
  transition: color 0.25s ease;
}

.nav__links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.35rem;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, var(--sakura), var(--cyan));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s ease;
}

.nav__links a:hover {
  color: var(--ink);
}

.nav__links a:hover::after {
  transform: scaleX(1);
}

/* Hero */
.hero {
  position: relative;
  min-height: 100vh;
  display: grid;
  align-items: end;
  padding: 7.5rem clamp(1.25rem, 4vw, 3rem) 4.5rem;
  isolation: isolate;
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: -2;
  background:
    linear-gradient(90deg, rgba(7, 11, 28, 0.88) 0%, rgba(7, 11, 28, 0.45) 42%, rgba(7, 11, 28, 0.15) 70%),
    linear-gradient(0deg, rgba(7, 11, 28, 0.92) 0%, transparent 42%),
    url("assets/hero-summon.png") center / cover no-repeat;
  transform: scale(1.04);
  transition: transform 0.8s ease;
}

.hero__veil {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(60% 50% at 70% 45%, rgba(61, 224, 255, 0.12), transparent 70%),
    radial-gradient(40% 35% at 18% 70%, rgba(255, 107, 157, 0.10), transparent 70%);
}

.hero__content {
  width: min(100%, 640px);
  animation: rise 1s ease both;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(28px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero__eyebrow,
.section__eyebrow {
  margin: 0 0 0.85rem;
  color: var(--cyan);
  font-size: 0.78rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
}

.hero__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(3.4rem, 9vw, 6.2rem);
  line-height: 0.98;
  letter-spacing: 0.06em;
}

.hero__title-line {
  display: block;
}

.hero__title-line--accent {
  background: linear-gradient(120deg, var(--sakura), var(--gold) 45%, var(--cyan));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero__lead {
  margin: 1.4rem 0 1.8rem;
  color: rgba(244, 240, 255, 0.88);
  font-size: 1.05rem;
  max-width: 34em;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-bottom: 2.2rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 1.45rem;
  border-radius: 999px;
  font-size: 0.95rem;
  letter-spacing: 0.06em;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
}

.btn--primary {
  color: #1a1030;
  background: linear-gradient(120deg, var(--gold), var(--sakura));
  box-shadow: 0 12px 30px rgba(255, 107, 157, 0.28);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 36px rgba(255, 107, 157, 0.36);
}

.btn--ghost {
  border: 1px solid rgba(61, 224, 255, 0.45);
  color: var(--cyan);
  background: rgba(61, 224, 255, 0.08);
}

.btn--ghost:hover {
  transform: translateY(-2px);
  background: rgba(61, 224, 255, 0.16);
}

.hero__meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin: 0;
  padding: 1.15rem 1.25rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(11, 16, 38, 0.42);
  backdrop-filter: blur(10px);
}

.hero__meta dt {
  margin: 0;
  color: var(--ink-muted);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
}

.hero__meta dd {
  margin: 0.25rem 0 0;
  font-family: var(--font-display);
  font-size: 1.05rem;
}

.hero__scroll {
  position: absolute;
  right: clamp(1.25rem, 4vw, 3rem);
  bottom: 2rem;
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--ink-muted);
  font-size: 0.8rem;
  letter-spacing: 0.18em;
  writing-mode: vertical-rl;
}

.hero__scroll span {
  width: 1px;
  height: 54px;
  background: linear-gradient(180deg, var(--cyan), transparent);
  animation: pulse 1.8s ease-in-out infinite;
}

@keyframes pulse {
  0%,
  100% {
    opacity: 0.35;
    transform: scaleY(0.85);
  }
  50% {
    opacity: 1;
    transform: scaleY(1);
  }
}

/* 区块 */
.section {
  position: relative;
  z-index: 1;
  width: min(100% - 2.5rem, var(--max));
  margin: 0 auto;
  padding: 5.5rem 0;
}

.section__head {
  max-width: 640px;
  margin-bottom: 2.8rem;
}

.section__title {
  margin: 0 0 0.85rem;
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 4vw, 2.7rem);
  letter-spacing: 0.08em;
  line-height: 1.25;
}

.section__desc {
  margin: 0;
  color: var(--ink-muted);
}

/* 卡牌网格 */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.4rem;
}

.summon-card {
  perspective: 1200px;
}

.summon-card__inner {
  transition: transform 0.35s ease;
  transform-style: preserve-3d;
}

.summon-card:hover .summon-card__inner {
  transform: translateY(-10px) rotateX(6deg) rotateY(-8deg);
}

.summon-card__frame {
  position: relative;
  overflow: hidden;
  min-height: 100%;
  padding: 1.15rem;
  border-radius: calc(var(--radius) + 4px);
  border: 1px solid rgba(255, 215, 106, 0.38);
  background:
    linear-gradient(160deg, rgba(255, 215, 106, 0.12), transparent 35%),
    linear-gradient(180deg, rgba(20, 27, 61, 0.95), rgba(11, 16, 38, 0.98));
  box-shadow: var(--shadow);
}

.summon-card__frame::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    125deg,
    transparent 30%,
    rgba(255, 255, 255, 0.12) 48%,
    transparent 62%
  );
  transform: translateX(-120%);
  transition: transform 0.7s ease;
  pointer-events: none;
}

.summon-card:hover .summon-card__frame::before {
  transform: translateX(120%);
}

.summon-card__art {
  position: relative;
  height: 220px;
  margin-bottom: 1.1rem;
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid rgba(255, 215, 106, 0.25);
  background:
    radial-gradient(circle at 50% 70%, rgba(255, 215, 106, 0.18), transparent 55%),
    linear-gradient(180deg, #10173a, #0a0f28);
}

.guardian {
  position: absolute;
  left: 50%;
  bottom: 18px;
  width: 72px;
  height: 140px;
  transform: translateX(-50%);
  border-radius: 22px 22px 10px 10px;
  opacity: 0.92;
  filter: drop-shadow(0 18px 24px rgba(0, 0, 0, 0.35));
}

.guardian::before,
.guardian::after {
  content: "";
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  background: inherit;
  border-radius: inherit;
}

.guardian::before {
  top: -28px;
  width: 34px;
  height: 34px;
  border-radius: 50%;
}

.guardian::after {
  top: 28px;
  width: 96px;
  height: 18px;
  border-radius: 12px;
}

.guardian--ice {
  background: linear-gradient(180deg, #9be7ff, #3de0ff 45%, #1d7ea8);
  box-shadow: 0 0 28px rgba(61, 224, 255, 0.55);
}

.guardian--gold {
  background: linear-gradient(180deg, #ffe7a3, #ffd76a 45%, #d9942a);
  box-shadow: 0 0 28px rgba(255, 215, 106, 0.55);
}

.guardian--violet {
  background: linear-gradient(180deg, #d7c2ff, #b48cff 45%, #6b45c9);
  box-shadow: 0 0 28px rgba(180, 140, 255, 0.55);
}

.summon-card__badge {
  position: absolute;
  top: 1.55rem;
  right: 1.55rem;
  padding: 0.28rem 0.7rem;
  border-radius: 999px;
  border: 1px solid rgba(255, 215, 106, 0.45);
  background: rgba(7, 11, 28, 0.55);
  color: var(--gold);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
}

.summon-card__name {
  margin: 0 0 0.35rem;
  font-family: var(--font-display);
  font-size: 1.28rem;
  letter-spacing: 0.06em;
}

.summon-card__pose {
  margin: 0 0 1rem;
  color: var(--ink-muted);
  font-size: 0.92rem;
}

.summon-card__stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.55rem;
}

.summon-card__stats li {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 0.55rem;
  border-top: 1px solid var(--line);
  font-size: 0.92rem;
}

.summon-card__stats span {
  color: var(--ink-muted);
}

.summon-card[data-tone="ice"] .summon-card__name {
  color: var(--cyan);
}

.summon-card[data-tone="gold"] .summon-card__name {
  color: var(--gold);
}

.summon-card[data-tone="violet"] .summon-card__name {
  color: var(--violet);
}

/* 仪式步骤 */
.ritual__steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.25rem;
  counter-reset: none;
}

.ritual__step {
  position: relative;
  padding: 1.6rem 1.4rem 1.5rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(20, 27, 61, 0.55);
  transition: transform 0.3s ease, border-color 0.3s ease, background 0.3s ease;
}

.ritual__step:hover {
  transform: translateY(-6px);
  border-color: rgba(61, 224, 255, 0.38);
  background: rgba(20, 27, 61, 0.78);
}

.ritual__num {
  display: inline-block;
  margin-bottom: 0.85rem;
  color: var(--sakura);
  font-family: var(--font-display);
  font-size: 1.8rem;
  letter-spacing: 0.08em;
}

.ritual__step h3 {
  margin: 0 0 0.55rem;
  font-family: var(--font-display);
  font-size: 1.25rem;
  letter-spacing: 0.08em;
}

.ritual__step p {
  margin: 0;
  color: var(--ink-muted);
}

/* 物语 */
.story__panel {
  display: grid;
  grid-template-columns: 1.45fr 0.85fr;
  gap: 1.5rem;
  padding: 1.8rem;
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) + 6px);
  background:
    radial-gradient(70% 120% at 0% 0%, rgba(255, 107, 157, 0.10), transparent 55%),
    radial-gradient(60% 100% at 100% 100%, rgba(61, 224, 255, 0.10), transparent 55%),
    rgba(20, 27, 61, 0.48);
  box-shadow: var(--shadow);
}

.story__copy p {
  color: rgba(244, 240, 255, 0.88);
}

.story__copy blockquote {
  margin: 1.5rem 0 0;
  padding: 1rem 1.25rem;
  border-left: 3px solid var(--sakura);
  background: rgba(255, 107, 157, 0.08);
  color: var(--ink);
  font-family: var(--font-display);
  letter-spacing: 0.05em;
}

.story__aside {
  display: grid;
  gap: 0.85rem;
  align-content: start;
}

.stat {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.95rem 1.05rem;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(11, 16, 38, 0.45);
}

.stat__label {
  color: var(--ink-muted);
  font-size: 0.88rem;
}

.stat__value {
  font-family: var(--font-display);
  letter-spacing: 0.05em;
}

/* 页脚 */
.footer {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: min(100% - 2.5rem, var(--max));
  margin: 0 auto;
  padding: 2.2rem 0 3rem;
  border-top: 1px solid var(--line);
  color: var(--ink-muted);
  font-size: 0.92rem;
}

.footer__brand {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--ink);
  font-family: var(--font-display);
  letter-spacing: 0.08em;
}

.footer__top {
  color: var(--cyan);
}

.footer__top:hover {
  text-decoration: underline;
}

/* 响应式 */
@media (max-width: 920px) {
  .card-grid,
  .ritual__steps,
  .story__panel {
    grid-template-columns: 1fr;
  }

  .hero__scroll {
    display: none;
  }

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

@media (max-width: 640px) {
  .nav__links {
    gap: 1rem;
    font-size: 0.88rem;
  }

  .hero {
    padding-top: 6.5rem;
  }

  .section {
    padding: 4rem 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}