@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@300;400;500;700&family=Noto+Serif+JP:wght@400;500;600;700&display=swap');

:root {
  --red: #ff0000;
  --pink: #ff1493;
  --ink: #261717;
  --ink2: #331e1e;
  --ink3: #3f2626;
  --text: #f8ece7;
  --dim: #d8bcb3;
  --sun: #ffb28a;
  --r: 28px;
  --max: 1000px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--ink);
  color: var(--text);
  font-family: "Noto Sans JP", "Hiragino Sans", "Microsoft YaHei", system-ui, sans-serif;
  font-size: 17px;
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  padding-bottom: 124px;
}

.aurora {
  position: fixed;
  inset: -22% -12%;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(42% 38% at 12% 18%, rgba(255, 0, 0, 0.42), transparent 62%),
    radial-gradient(46% 42% at 84% 12%, rgba(255, 20, 147, 0.40), transparent 64%),
    radial-gradient(52% 48% at 70% 78%, rgba(255, 130, 70, 0.22), transparent 66%),
    radial-gradient(60% 55% at 22% 88%, rgba(255, 20, 147, 0.26), transparent 68%),
    conic-gradient(from 200deg at 50% 50%, #2a1616, #47202c, #2a1616, #3b1a1a, #2a1616);
  background-size: 200% 200%;
  filter: saturate(1.25) blur(6px);
  animation: aurora 11s ease-in-out infinite alternate;
}

@keyframes aurora {
  0% {
    background-position: 0% 0%, 100% 0%, 60% 100%, 0% 100%, 0% 0%;
  }
  100% {
    background-position: 30% 40%, 58% 30%, 20% 62%, 40% 20%, 100% 100%;
  }
}

.page {
  max-width: var(--max);
  margin: 0 auto;
  padding: 20px 20px 0;
}

/* ---------- 首屏 ---------- */

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: clamp(20px, 4vw, 48px);
  align-items: center;
  min-height: 45vh;
  padding: 52px 0 40px;
}

.hero-copy {
  min-width: 0;
}

.badge {
  display: inline-block;
  margin: 0 0 18px;
  padding: 5px 16px;
  border-radius: 999px;
  font-size: 16px;
  letter-spacing: 0.14em;
  color: #ffc6dd;
  background: rgba(255, 20, 147, 0.16);
  box-shadow: inset 0 0 0 1px rgba(255, 20, 147, 0.35);
}

h1 {
  font-family: "Noto Serif JP", "Hiragino Mincho ProN", serif;
  font-size: clamp(2rem, 5.2vw, 3.05rem);
  line-height: 1.3;
  font-weight: 600;
  letter-spacing: 0.01em;
  margin: 0 0 20px;
  background: linear-gradient(96deg, #ffffff 6%, #ffbdb0 46%, var(--pink) 96%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.lead {
  margin: 0 0 26px;
  max-width: 32em;
  color: var(--dim);
}

.btn {
  display: inline-flex;
  align-items: center;
  min-height: 48px;
  padding: 0 28px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 700;
  color: #fff;
  background: linear-gradient(100deg, var(--red), var(--pink));
  box-shadow: 0 14px 32px -14px rgba(255, 20, 147, 0.9);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 20px 38px -14px rgba(255, 0, 0, 0.95);
}

.hero-art {
  position: relative;
  height: clamp(230px, 33vh, 350px);
}

.shot {
  position: absolute;
  margin: 0;
  overflow: hidden;
  border-radius: var(--r);
  background: linear-gradient(150deg, #4c2226, #2b1618);
  box-shadow: 0 26px 60px -30px rgba(255, 20, 147, 0.8);
}

.shot-img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.shot.a {
  width: 62%;
  height: 78%;
  left: 0;
  top: 0;
  transform: rotate(-3deg);
}

.shot.b {
  width: 55%;
  height: 68%;
  right: 0;
  bottom: 0;
  transform: rotate(3.5deg);
}

.art-bare .shot.a {
  background: linear-gradient(150deg, #b6114a, #40131c);
}

.art-bare .shot.b {
  background: linear-gradient(150deg, #ff3a2f, #38181a);
}

/* ---------- 正文 ---------- */

.doc {
  display: block;
}

.doc > section {
  position: relative;
  overflow: hidden;
  background: var(--ink2);
  border-radius: var(--r);
  padding: clamp(24px, 4vw, 40px) clamp(20px, 4vw, 38px);
  margin-bottom: 24px;
  scroll-margin-top: 26px;
}

.doc > section::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--red), var(--pink), rgba(255, 255, 255, 0));
}

.doc h2 {
  font-family: "Noto Serif JP", "Hiragino Mincho ProN", serif;
  font-size: clamp(1.4rem, 3vw, 1.85rem);
  line-height: 1.42;
  font-weight: 600;
  margin: 0 0 0.7em;
  color: #ffe0d6;
}

.doc h2 > span {
  background: linear-gradient(96deg, #ff5a35, var(--pink));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.doc h3 {
  font-family: "Noto Serif JP", "Hiragino Mincho ProN", serif;
  font-size: 1.16rem;
  line-height: 1.5;
  margin: 1.7em 0 0.55em;
  color: #ffcbb8;
}

.doc h3 > span {
  color: var(--sun);
}

.doc p {
  margin: 0 0 1.15em;
  max-width: 38em;
}

.doc p:last-child {
  margin-bottom: 0;
}

.doc ul,
.doc ol {
  margin: 0 0 1.2em;
  padding-left: 1.35em;
  max-width: 38em;
}

.doc li {
  margin: 0.4em 0;
}

.doc strong {
  color: #fff;
}

.doc a {
  color: #ff9dc4;
  text-underline-offset: 0.25em;
}

.doc a:hover {
  color: #fff;
}

.doc blockquote {
  margin: 1.4em 0;
  padding: 2px 0 2px 18px;
  border-left: 3px solid var(--pink);
  color: var(--dim);
}

.doc img {
  max-width: 100%;
  height: auto;
  border-radius: 18px;
}

.doc hr {
  border: 0;
  height: 1px;
  background: rgba(255, 255, 255, 0.12);
  margin: 2em 0;
}

/* ---------- 页脚 ---------- */

.site-foot {
  max-width: var(--max);
  margin: 52px auto 0;
  padding: 34px 20px 6px;
}

.foot-cols {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 26px;
}

.foot-col {
  margin: 0;
  min-width: 0;
}

.foot-col dt {
  margin: 0 0 10px;
}

.foot-col h2 {
  font-family: "Noto Serif JP", "Hiragino Mincho ProN", serif;
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  margin: 0;
  color: #ffb9cf;
}

.foot-col h2 > span {
  color: inherit;
}

.foot-col dd {
  margin: 0;
  color: var(--dim);
  font-size: 16px;
  overflow-wrap: anywhere;
}

.foot-col a {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  color: var(--dim);
  text-decoration: none;
}

.foot-col a:hover {
  color: #fff;
}

.foot-host {
  color: #b1938a;
}

.foot-base {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-top: 28px;
  padding: 14px 0 12px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.foot-base p {
  margin: 0;
  font-size: 16px;
  color: #bda19a;
}

.foot-base a {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  color: #ffb9cf;
  text-decoration: none;
}

.foot-base a:hover {
  color: #fff;
}

/* ---------- 底部胶囊导航 ---------- */

.dock {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 60;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px calc(10px + env(safe-area-inset-bottom));
  background: linear-gradient(180deg, rgba(38, 23, 23, 0.62), rgba(22, 12, 12, 0.97));
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  box-shadow: 0 -1px 0 rgba(255, 255, 255, 0.08);
}

.dock-nav {
  flex: 1 1 auto;
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 6px;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.dock-nav::-webkit-scrollbar {
  display: none;
}

.dock-list {
  display: flex;
  align-items: center;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.dock-list a {
  display: flex;
  align-items: center;
  white-space: nowrap;
  min-height: 44px;
  padding: 0 15px;
  border-radius: 999px;
  font-size: 16px;
  color: #f0dcd5;
  text-decoration: none;
  background: rgba(255, 255, 255, 0.07);
  transition: background 0.22s ease, color 0.22s ease, transform 0.22s ease;
}

.dock-list a:hover {
  background: rgba(255, 20, 147, 0.24);
  color: #fff;
  transform: translateY(-2px);
}

.dock-list a.on {
  background: linear-gradient(100deg, var(--red), var(--pink));
  color: #fff;
  font-weight: 700;
}

.dock-brand {
  flex: 0 0 auto;
  margin-inline: auto;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-height: 44px;
  padding: 0 16px;
  border-radius: 999px;
  white-space: nowrap;
  text-decoration: none;
  color: #fff;
  font-family: "Noto Serif JP", serif;
  letter-spacing: 0.08em;
  background: rgba(255, 255, 255, 0.1);
}

.brand-mark {
  width: 26px;
  height: 26px;
  border-radius: 8px;
  object-fit: cover;
}

.dock-call {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 999px;
  text-decoration: none;
  color: #fff;
  font-weight: 700;
  white-space: nowrap;
  background: linear-gradient(100deg, var(--red), var(--pink));
  box-shadow: 0 10px 24px -12px rgba(255, 20, 147, 0.95);
}

/* ---------- 滚动出现 ---------- */

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.75s ease, transform 0.75s ease;
}

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

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .aurora {
    animation: none;
  }
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .btn,
  .dock-list a {
    transition: none;
  }
}

/* ---------- 断点 ---------- */

@media (max-width: 820px) {
  .hero {
    grid-template-columns: 1fr;
    min-height: 0;
    padding: 34px 0 26px;
    gap: 26px;
  }
  .hero-art {
    height: 232px;
  }
  .foot-cols {
    grid-template-columns: 1fr;
    gap: 18px;
  }
  .foot-col dd {
    display: inline-block;
    margin-right: 14px;
  }
}

@media (max-width: 540px) {
  body {
    font-size: 16px;
    padding-bottom: 136px;
  }
  .page {
    padding: 12px 14px 0;
  }
  .site-foot {
    padding: 28px 14px 4px;
  }
  .dock {
    padding: 8px 10px calc(8px + env(safe-area-inset-bottom));
    gap: 6px;
  }
  .dock-list a {
    padding: 0 12px;
  }
  .dock-brand {
    padding: 0 12px;
  }
  .dock-call {
    padding: 0 14px;
  }
  .doc > section {
    padding: 22px 18px;
  }
}

button[aria-expanded]{min-width:44px;min-height:44px}