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

:root {
  --red: #ff0000;
  --pink: #ff1493;
  --ink: #261717;
  --bg: #150c0d;
  --panel: rgba(38, 23, 23, 0.62);
  --line: rgba(255, 20, 147, 0.26);
  --txt: #f7ebec;
  --dim: #c9adb3;
  --edge: 2px;
}

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

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--txt);
  font-family: 'Noto Sans Arabic', 'Noto Naskh Arabic', system-ui, -apple-system, 'Segoe UI', 'Microsoft YaHei', sans-serif;
  font-size: 17px;
  line-height: 1.75;
  overflow-x: hidden;
}

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

a { color: var(--pink); text-decoration: none; }
a:hover { color: #fff; }

h1, h2, h3 { margin: 0 0 0.55em; line-height: 1.2; font-weight: 600; letter-spacing: 0.01em; }
p { margin: 0 0 1em; }

.skip {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 60;
  padding: 12px 18px;
  background: var(--ink);
  color: #fff;
}
.skip:focus { left: 8px; top: 8px; }

/* 极光背景 */
.aurora {
  position: fixed;
  inset: -12% -12% 0;
  z-index: -1;
  pointer-events: none;
  filter: saturate(1.25) blur(38px);
  opacity: 0.85;
  overflow: hidden;
}
.aurora i {
  position: absolute;
  display: block;
  border-radius: 50%;
  mix-blend-mode: screen;
}
.aurora i:nth-child(1) {
  width: 62vw; height: 62vw; left: -12vw; top: -14vw;
  background: radial-gradient(circle at 40% 40%, rgba(255, 0, 0, 0.62), rgba(255, 0, 0, 0) 68%);
  animation: drift-a 11s ease-in-out infinite alternate;
}
.aurora i:nth-child(2) {
  width: 72vw; height: 72vw; right: -20vw; top: 4vh;
  background: radial-gradient(circle at 55% 45%, rgba(255, 20, 147, 0.55), rgba(255, 20, 147, 0) 70%);
  animation: drift-b 13s ease-in-out infinite alternate;
}
.aurora i:nth-child(3) {
  width: 52vw; height: 52vw; left: 20vw; bottom: -20vw;
  background: radial-gradient(circle at 50% 50%, rgba(255, 122, 61, 0.4), rgba(38, 23, 23, 0) 72%);
  animation: drift-a 9s ease-in-out infinite alternate-reverse;
}
@keyframes drift-a {
  from { transform: translate3d(0, 0, 0) scale(1); }
  to { transform: translate3d(9vw, 6vh, 0) scale(1.25); }
}
@keyframes drift-b {
  from { transform: translate3d(0, 0, 0) scale(1.1); }
  to { transform: translate3d(-8vw, 10vh, 0) scale(0.9); }
}

/* 页头 */
.top {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 16px;
  padding: 10px clamp(14px, 4vw, 40px);
  background: rgba(21, 12, 13, 0.84);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  color: var(--txt);
  font-weight: 700;
  letter-spacing: 0.12em;
}
.brand:hover { color: #fff; }
.mark {
  flex: 0 0 26px;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: conic-gradient(from 210deg, var(--red), var(--pink), #ff7a3d, var(--red));
  box-shadow: 0 0 18px rgba(255, 20, 147, 0.6);
}
.brand-t { font-size: 17px; }

.jump { margin-left: auto; }
.jump p { display: flex; flex-wrap: wrap; gap: 0 2px; margin: 0; }
.jump a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 10px;
  color: var(--dim);
  font-size: 16px;
  border-bottom: 2px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}
.jump a:hover, .jump a:focus-visible {
  color: #fff;
  border-bottom-color: var(--pink);
}

.tools { display: flex; align-items: center; gap: 8px; }

.grp { position: relative; }
.grp summary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 14px;
  border: 1px solid var(--line);
  color: var(--dim);
  font-size: 16px;
  letter-spacing: 0.1em;
  cursor: pointer;
  list-style: none;
}
.grp summary::-webkit-details-marker { display: none; }
.grp summary::after {
  content: "";
  width: 7px;
  height: 7px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: translateY(-2px) rotate(45deg);
}
.grp[open] summary { color: #fff; border-color: var(--pink); }
.grp-body {
  position: absolute;
  right: 0;
  top: calc(100% + 8px);
  z-index: 50;
  width: min(78vw, 300px);
  padding: 14px;
  background: rgba(30, 18, 19, 0.97);
  border: 1px solid var(--line);
  border-bottom: var(--edge) solid var(--pink);
  box-shadow: 0 24px 46px rgba(0, 0, 0, 0.58);
}
.grp-body a {
  display: flex;
  align-items: center;
  min-height: 42px;
  padding: 0 4px;
  color: var(--dim);
  border-bottom: 1px dashed rgba(255, 20, 147, 0.2);
}
.grp-body a:hover { color: #fff; }
.grp-t {
  margin: 10px 0 4px;
  color: var(--pink);
  font-size: 16px;
  letter-spacing: 0.22em;
}
.grp-t:first-child { margin-top: 0; }

.find { display: flex; align-items: center; }
.find input {
  min-height: 44px;
  width: 9.5rem;
  padding: 0 12px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
  color: var(--txt);
  font: inherit;
  font-size: 16px;
  border-radius: 0;
}
.find input:focus { outline: none; border-color: var(--pink); }
.find button {
  min-height: 44px;
  padding: 0 14px;
  border: 0;
  background: linear-gradient(120deg, var(--red), var(--pink));
  color: #fff;
  font: inherit;
  font-size: 16px;
  cursor: pointer;
}

/* 首屏 */
.hero {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: clamp(16px, 3vw, 40px);
  align-items: center;
  min-height: 45vh;
  max-width: 1180px;
  margin: 0 auto;
  padding: clamp(18px, 4vw, 40px) clamp(14px, 4vw, 40px);
  border-bottom: 1px solid var(--line);
}
.hero-art {
  position: relative;
  min-height: 200px;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border: 1px solid var(--line);
  border-bottom: var(--edge) solid var(--pink);
  background: rgba(38, 23, 23, 0.5);
}
.hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(1.2) contrast(1.05);
}
.orb {
  position: absolute;
  inset: -30%;
  background: conic-gradient(from 40deg, var(--red), var(--pink), #ff8b3d, #7a1030, var(--red));
  filter: blur(18px) saturate(1.3);
  animation: morph 12s ease-in-out infinite alternate;
}
@keyframes morph {
  from { transform: rotate(0deg) scale(1); }
  to { transform: rotate(24deg) scale(1.2); }
}
.badge {
  position: absolute;
  left: 14px;
  bottom: 14px;
  padding: 6px 12px;
  background: rgba(21, 12, 13, 0.86);
  border: 1px solid var(--pink);
  color: #ffd7e6;
  font-size: 16px;
  letter-spacing: 0.26em;
}

.hero-txt { text-align: right; }
.hero h1 {
  font-size: clamp(1.85rem, 4.6vw, 3.2rem);
  background: linear-gradient(100deg, #fff 6%, var(--pink) 58%, var(--red));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-lead {
  max-width: 44ch;
  margin-left: auto;
  color: var(--dim);
}
.cta {
  display: inline-flex;
  align-items: center;
  min-height: 48px;
  padding: 0 26px;
  background: linear-gradient(120deg, var(--red), var(--pink));
  color: #fff;
  font-weight: 600;
  letter-spacing: 0.1em;
  transition: box-shadow 0.25s ease, transform 0.25s ease;
}
.cta:hover {
  color: #fff;
  box-shadow: 0 14px 32px rgba(255, 20, 147, 0.4);
  transform: translateY(-2px);
}

/* 主体 */
main { padding: clamp(20px, 4vw, 46px) 0 12px; }

.wrap {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 292px;
  gap: clamp(18px, 3vw, 42px);
  align-items: start;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 clamp(14px, 4vw, 40px);
}

.prose { min-width: 0; }
.prose > section {
  position: relative;
  margin: 0 0 26px;
  padding: 26px 24px 32px;
  background: linear-gradient(180deg, rgba(255, 20, 147, 0.08), rgba(38, 23, 23, 0.55) 62%);
  border-bottom: var(--edge) solid var(--pink);
  scroll-margin-top: 104px;
}
.prose > section:nth-child(even) {
  background: linear-gradient(180deg, rgba(255, 0, 0, 0.08), rgba(38, 23, 23, 0.55) 62%);
}
.prose > section:nth-child(3n) {
  border-bottom-color: var(--red);
}
.prose h2 {
  font-size: clamp(1.3rem, 2.4vw, 1.72rem);
  padding-bottom: 0.35em;
  border-bottom: 1px solid var(--line);
}
.prose h3 { font-size: 1.15rem; color: #ffd7e6; }
.prose p, .prose li { font-size: 17px; }
.prose a { border-bottom: 1px solid rgba(255, 20, 147, 0.45); }
.prose ul, .prose ol { padding-left: 1.35em; }
.prose li { margin: 0.35em 0; }
.prose img { margin: 1em 0; border: 1px solid var(--line); }
.prose blockquote {
  margin: 1em 0;
  padding: 0.7em 1em;
  border-left: 3px solid var(--pink);
  background: rgba(255, 20, 147, 0.08);
  color: var(--dim);
}
.prose strong { color: #fff; }

/* 侧栏 */
.side {
  position: sticky;
  top: 96px;
  padding: 20px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-bottom: var(--edge) solid var(--red);
}
.side h2 { font-size: 1.15rem; }
.side .subtitle { margin: -0.35em 0 1em; color: var(--dim); font-size: 16px; }
.side-list {
  margin: 0 0 1em;
  padding: 0;
  list-style: none;
  counter-reset: seg;
}
.side-list li { counter-increment: seg; }
.side-list a {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 0 4px;
  color: var(--dim);
  border-bottom: 1px dashed rgba(255, 20, 147, 0.22);
  transition: color 0.2s ease, padding-left 0.2s ease;
}
.side-list a::before {
  content: counter(seg, decimal-leading-zero);
  margin-right: 10px;
  color: var(--pink);
  font-size: 16px;
  letter-spacing: 0.1em;
}
.side-list a:hover { color: #fff; padding-left: 8px; }
.side-top { margin: 0; }
.side-top a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: var(--dim);
  letter-spacing: 0.16em;
}

/* 页脚 */
.site-foot {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 16px clamp(16px, 3vw, 36px);
  max-width: 1180px;
  margin: 40px auto 0;
  padding: clamp(22px, 4vw, 38px) clamp(14px, 4vw, 40px) 30px;
  border-top: var(--edge) solid rgba(255, 20, 147, 0.55);
  background: rgba(38, 23, 23, 0.46);
}
.f-col { margin: 0; color: var(--dim); font-size: 16px; }
.f-name { display: block; color: #fff; font-weight: 700; letter-spacing: 0.14em; }
.f-key { display: block; color: var(--pink); letter-spacing: 0.3em; }
.f-links { display: flex; flex-wrap: wrap; gap: 4px 14px; }
.f-links a {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  color: var(--dim);
}
.f-links a:hover { color: #fff; }

.sub-form { display: flex; flex-wrap: wrap; gap: 8px; }
.sub-form input {
  flex: 1 1 8rem;
  min-height: 44px;
  padding: 0 12px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
  color: var(--txt);
  font: inherit;
  font-size: 16px;
  border-radius: 0;
}
.sub-form input:focus { outline: none; border-color: var(--pink); }
.sub-form button {
  min-height: 44px;
  padding: 0 18px;
  border: 0;
  background: linear-gradient(120deg, var(--pink), var(--red));
  color: #fff;
  font: inherit;
  font-size: 16px;
  cursor: pointer;
}
.f-copy { grid-column: 1; color: var(--dim); font-size: 16px; letter-spacing: 0.1em; }
.f-legal { grid-column: 3; text-align: right; font-size: 16px; }
.f-legal a { display: inline-block; padding: 8px 0; color: var(--dim); }
.f-legal a:hover { color: #fff; }

/* 滚动显现 */
.js .prose > section {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}
.js .prose > section.in { opacity: 1; transform: none; }

@media (max-width: 900px) {
  .wrap { grid-template-columns: 1fr; }
  .jump { order: 3; width: 100%; margin-left: 0; }
  .jump p { gap: 0 4px; }
  .tools { order: 4; width: 100%; }
  .side { position: static; order: 2; }
  .hero { grid-template-columns: 1fr; min-height: 0; }
  .hero-txt { order: 1; text-align: left; }
  .hero-lead { margin-left: 0; }
  .hero-art { order: 2; aspect-ratio: 16 / 9; max-height: 190px; }
  .site-foot { grid-template-columns: 1fr; }
  .f-copy, .f-legal { grid-column: auto; text-align: left; }
}

@media (max-width: 560px) {
  .find { flex: 1 1 100%; }
  .find input { width: 100%; }
  .grp-body { right: auto; left: 0; width: 100%; }
  .prose > section { padding: 20px 16px 26px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .aurora i, .orb { animation: none; }
  .js .prose > section { opacity: 1; transform: none; transition: none; }
  .cta:hover { transform: none; }
}

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