@import url('https://fonts.googleapis.com/css2?family=Cormorant:wght@400;500;600;700&family=Montserrat:wght@300;400;500;600;700&display=swap');

:root {
  --ink: #261717;
  --night: #170e0e;
  --deep: #120b0b;
  --crimson: #ff0000;
  --magenta: #ff1493;
  --cream: #f7ece9;
  --muted: #c2a9a6;
  --line: rgba(255, 236, 232, 0.14);
  --radius: 4px;
  --sans: 'Montserrat', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  --serif: 'Cormorant', 'Songti SC', 'Noto Serif SC', Georgia, serif;
}

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

html {
  font-size: 100%;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  background: var(--night);
}

body {
  margin: 0;
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.75;
  color: var(--cream);
  background: transparent;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: -22vmax;
  z-index: -2;
  pointer-events: none;
  background:
    radial-gradient(38% 42% at 18% 22%, rgba(255, 0, 0, 0.55), transparent 62%),
    radial-gradient(34% 38% at 78% 18%, rgba(255, 20, 147, 0.5), transparent 64%),
    radial-gradient(46% 50% at 62% 82%, rgba(255, 0, 0, 0.3), transparent 66%),
    radial-gradient(40% 44% at 24% 78%, rgba(255, 20, 147, 0.34), transparent 68%);
  background-size: 180% 180%;
  filter: saturate(1.2) blur(12px);
  animation: aurora 11s ease-in-out infinite alternate;
  opacity: 0.92;
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(23, 14, 14, 0.5), rgba(23, 14, 14, 0.9) 55%, var(--deep));
}

@keyframes aurora {
  0% {
    background-position: 0% 20%;
  }
  100% {
    background-position: 100% 80%;
  }
}

a {
  color: inherit;
}

img {
  max-width: 100%;
}

:focus-visible {
  outline: 2px solid var(--magenta);
  outline-offset: 2px;
}

/* 顶栏 */
.topbar {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(23, 14, 14, 0.76);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px) saturate(1.2);
}

.bar-grid {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0.7rem 1rem;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  grid-template-areas: "left brand right";
  align-items: center;
  gap: 0.7rem;
}

.left-cluster {
  grid-area: left;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  min-width: 0;
}

.right-cluster {
  grid-area: right;
  display: flex;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: 0.4rem;
  min-width: 0;
}

.menu {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  min-width: 0;
}

.pill {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  padding: 0.35rem 0.85rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--cream);
  font-size: 1rem;
  text-decoration: none;
  white-space: nowrap;
  transition: background 0.25s ease, border-color 0.25s ease, color 0.25s ease;
}

.pill:hover,
.pill:focus-visible {
  border-color: rgba(255, 20, 147, 0.7);
  background: rgba(255, 20, 147, 0.16);
  color: #fff;
}

.finder {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  flex: 1 1 auto;
  min-width: 0;
  max-width: 232px;
}

.finder-label {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.finder input {
  flex: 1 1 auto;
  min-width: 0;
  height: 40px;
  padding: 0 0.7rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.06);
  color: var(--cream);
  font-family: inherit;
  font-size: 1rem;
}

.finder input::placeholder {
  color: #a9908e;
}

.finder button {
  height: 40px;
  min-width: 44px;
  padding: 0 0.55rem;
  border-radius: 999px;
  border: 1px solid rgba(255, 20, 147, 0.6);
  background: linear-gradient(120deg, var(--crimson), var(--magenta));
  color: #fff;
  font-family: inherit;
  font-size: 1rem;
  cursor: pointer;
}

.finder-status {
  position: absolute;
  left: 0;
  top: calc(100% + 0.4rem);
  margin: 0;
  padding: 0.25rem 0.55rem;
  max-width: 78vw;
  font-size: 0.9rem;
  line-height: 1.5;
  color: #ffc9dd;
  background: rgba(23, 14, 14, 0.94);
  border: 1px solid rgba(255, 20, 147, 0.35);
  border-radius: var(--radius);
  pointer-events: none;
}

.finder-status:empty {
  display: none;
}

.brand {
  grid-area: brand;
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 0.1rem;
  padding: 0.25rem 0.6rem;
  text-decoration: none;
  line-height: 1.2;
}

.brand-logo {
  display: block;
  border-radius: var(--radius);
}

.brand-cn {
  font-family: var(--serif);
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  background: linear-gradient(100deg, #fff, #ffd0dc 55%, var(--magenta));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.brand-sub {
  font-size: 0.9rem;
  letter-spacing: 0.34em;
  color: var(--muted);
}

/* 首屏 */
.hero {
  position: relative;
  min-height: 45vh;
  display: grid;
  place-items: center;
  overflow: hidden;
  padding: 3rem 1.1rem 2.6rem;
  border-bottom: 1px solid var(--line);
  text-align: center;
}

.hero-collage {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero-img {
  position: absolute;
  width: min(26vw, 226px);
  height: auto;
  border-radius: var(--radius);
  border-bottom: 3px solid rgba(255, 20, 147, 0.85);
  opacity: 0.5;
  filter: saturate(1.15) contrast(1.06);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.6);
  transform: rotate(var(--rot, 0deg)) translateY(var(--py, 0px));
  will-change: transform;
}

.hero-img-a {
  --rot: -4deg;
  left: 2vw;
  top: 10%;
}

.hero-img-b {
  --rot: 3deg;
  right: 2vw;
  bottom: 8%;
}

.hero-inner {
  position: relative;
  z-index: 2;
  max-width: 760px;
}

.eyebrow {
  margin: 0;
  font-size: 1rem;
  letter-spacing: 0.3em;
  text-transform: none;
  color: #ffc0d6;
}

.hero h1 {
  margin: 0.5rem 0 0.7rem;
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(2.05rem, 5.6vw, 3.4rem);
  line-height: 1.16;
  letter-spacing: 0.02em;
  background: linear-gradient(100deg, #fff 12%, #ffe0e6 42%, var(--magenta) 78%, var(--crimson));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.lede {
  margin: 0 auto;
  max-width: 44ch;
  color: #eddbd8;
  font-weight: 300;
}

.hero-hint {
  margin: 0.9rem 0 0;
  font-size: 0.95rem;
  letter-spacing: 0.12em;
  color: var(--muted);
}

/* 主体：左侧栏 + 正文 */
.content-shell {
  max-width: 1180px;
  margin: 0 auto;
  padding: 2.4rem 1rem 3.2rem;
  display: grid;
  grid-template-columns: 244px minmax(0, 1fr);
  gap: 2rem;
  align-items: start;
}

.rail {
  position: sticky;
  top: 5.6rem;
  padding: 1.1rem 1rem 1.2rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(38, 23, 23, 0.66);
  border-bottom: 3px solid rgba(255, 0, 0, 0.75);
  backdrop-filter: blur(8px);
}

.rail-h {
  margin: 0 0 0.5rem;
  font-family: var(--serif);
  font-size: 1.35rem;
  font-weight: 600;
  letter-spacing: 0.06em;
}

.rail hr,
.foot-col hr {
  height: 2px;
  margin: 0 0 0.9rem;
  border: 0;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--crimson), var(--magenta), transparent);
}

.rail-list {
  list-style: none;
  margin: 0.2rem 0 0;
  padding: 0;
}

.rail-list a {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  min-height: 44px;
  padding: 0.4rem 0.35rem;
  border-radius: var(--radius);
  border-bottom: 2px solid transparent;
  color: var(--cream);
  text-decoration: none;
  transition: background 0.25s ease, border-color 0.25s ease, color 0.25s ease;
}

.rail-list a:hover,
.rail-list a:focus-visible {
  border-bottom-color: var(--magenta);
  background: rgba(255, 20, 147, 0.14);
  color: #fff;
}

.num {
  font-family: var(--serif);
  font-size: 0.95rem;
  letter-spacing: 0.08em;
  color: #ff8fbd;
}

.rail-note {
  margin: 0.9rem 0 0;
  padding-top: 0.8rem;
  border-top: 1px solid var(--line);
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--muted);
}

/* 正文面板 */
.prose {
  min-width: 0;
  padding: 1.7rem 1.3rem 2.2rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(23, 14, 14, 0.62);
  border-bottom: 3px solid rgba(255, 20, 147, 0.6);
  backdrop-filter: blur(10px);
}

.prose-h {
  margin: 0 0 0.55rem;
  font-family: var(--serif);
  font-size: clamp(1.6rem, 3.2vw, 2.05rem);
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: 0.04em;
  color: #fff;
}

.prose > hr {
  height: 2px;
  margin: 0 0 1.3rem;
  border: 0;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--crimson), var(--magenta), transparent);
}

.prose section {
  padding: 2rem 0;
  border-top: 1px solid var(--line);
  scroll-margin-top: 6.5rem;
}

.prose section:first-of-type {
  border-top: 0;
  padding-top: 0.3rem;
}

.prose section.flash {
  outline: 2px solid var(--magenta);
  outline-offset: 8px;
  border-radius: var(--radius);
}

.prose h2 {
  margin: 0 0 0.6rem;
  font-family: var(--serif);
  font-size: clamp(1.55rem, 3.4vw, 2.1rem);
  font-weight: 600;
  line-height: 1.28;
  letter-spacing: 0.02em;
  color: #fff;
}

.prose hr {
  height: 2px;
  margin: 0 0 1.1rem;
  border: 0;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--crimson), var(--magenta), transparent);
}

.prose h3 {
  margin: 1.6rem 0 0.5rem;
  font-size: 1.2rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: #ffd7e6;
}

.prose p {
  margin: 0 0 1rem;
  color: #f0e0dd;
}

.prose a {
  color: #ff9ec8;
  text-underline-offset: 0.22em;
}

.prose strong {
  color: #fff;
}

.prose ul,
.prose ol {
  margin: 0 0 1rem;
  padding-left: 1.3rem;
}

.prose li {
  margin: 0.4rem 0;
}

.prose blockquote {
  margin: 1.2rem 0;
  padding: 0.7rem 1rem;
  border-left: 3px solid var(--magenta);
  background: rgba(255, 20, 147, 0.08);
  border-radius: var(--radius);
  color: #ffe3ee;
}

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

.prose img {
  height: auto;
  border-radius: var(--radius);
}

.prose time {
  display: inline-block;
  font-size: 0.9rem;
  letter-spacing: 0.08em;
  color: #ffb7cf;
}

/* 页脚 */
.site-foot {
  margin-top: 1rem;
  padding: 2.4rem 1rem 1.4rem;
  border-top: 1px solid var(--line);
  background: rgba(18, 11, 11, 0.8);
  backdrop-filter: blur(8px);
}

.foot-cols {
  max-width: 1180px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.8rem;
}

.foot-h {
  margin: 0 0 0.5rem;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: #ffd7e6;
}

.foot-nav dl {
  margin: 0;
}

.foot-nav dt {
  margin: 0;
}

.foot-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0.2rem 0;
  border-bottom: 2px solid transparent;
  color: var(--cream);
  text-decoration: none;
  transition: border-color 0.25s ease, color 0.25s ease;
}

.foot-nav a:hover,
.foot-nav a:focus-visible {
  border-bottom-color: var(--crimson);
  color: #fff;
}

.foot-nav dd {
  margin: 0 0 0.15rem;
  padding-left: 0.7rem;
  border-left: 2px solid rgba(255, 20, 147, 0.4);
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--muted);
}

address {
  display: block;
  margin: 0 0 0.7rem;
  font-style: normal;
}

.addr-brand {
  display: block;
  font-family: var(--serif);
  font-size: 1.2rem;
  letter-spacing: 0.08em;
  color: #fff;
}

.addr-line {
  display: block;
  margin-top: 0.3rem;
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--muted);
}

.foot-links {
  list-style: none;
  margin: 0;
  padding: 0;
}

.foot-links a {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0.2rem 0;
  border-bottom: 2px solid transparent;
  color: var(--cream);
  text-decoration: none;
}

.foot-links a:hover,
.foot-links a:focus-visible {
  border-bottom-color: var(--magenta);
  color: #fff;
}

.foot-note {
  margin: 0 0 0.7rem;
  font-size: 0.95rem;
  line-height: 1.75;
  color: #e6d3d0;
}

.foot-tags {
  margin: 0;
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.foot-base {
  max-width: 1180px;
  margin: 2rem auto 0;
  padding-top: 1.1rem;
  border-top: 1px solid var(--line);
  text-align: center;
}

.copy {
  margin: 0 0 0.3rem;
  font-size: 0.95rem;
  letter-spacing: 0.14em;
  color: #ffd7e6;
}

.fine {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--muted);
}

/* 进场动画 */
.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* 断点 */
@media (max-width: 980px) {
  .content-shell {
    grid-template-columns: 1fr;
    gap: 1.4rem;
    padding-top: 1.8rem;
  }

  .rail {
    position: static;
  }

  .rail-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.2rem 0.6rem;
  }

  .foot-cols {
    grid-template-columns: 1fr 1fr;
  }

  .foot-col-wide {
    grid-column: 1 / -1;
  }
}

@media (max-width: 900px) {
  .bar-grid {
    grid-template-columns: 1fr;
    grid-template-areas:
      "brand"
      "left"
      "right";
    padding: 0.65rem 0.85rem;
    gap: 0.5rem;
  }

  .brand {
    justify-self: center;
    padding: 0.2rem 0;
  }

  .brand-cn {
    font-size: 1.35rem;
  }

  .right-cluster {
    justify-content: flex-start;
  }

  .finder {
    flex: 1 1 100%;
    max-width: none;
  }

  .hero {
    min-height: 46vh;
    padding: 2.2rem 1rem 2rem;
  }

  .hero-img {
    width: 40vw;
    opacity: 0.32;
  }

  .hero-img-a {
    left: -6vw;
    top: 6%;
  }

  .hero-img-b {
    right: -6vw;
    bottom: 6%;
  }
}

@media (max-width: 620px) {
  .prose {
    padding: 1.2rem 0.95rem 1.8rem;
  }

  .foot-cols {
    grid-template-columns: 1fr;
    gap: 1.4rem;
  }

  .rail-list {
    grid-template-columns: 1fr;
  }

  .pill {
    padding: 0.35rem 0.7rem;
  }
}

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

  body::before {
    animation: none;
  }

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

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