@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');

/* ============================
   CSS 变量 & 基础重置
   ============================ */
:root {
  --c-primary: #ff0080;
  --c-secondary: #ff00ff;
  --c-dark: #26171f;
  --c-dark-2: #341e2c;
  --c-dark-3: #1a0f16;
  --c-text: #f0dce8;
  --c-text-muted: #b899a8;
  --c-border: rgba(255,0,128,0.18);
  --c-card-bg: rgba(52,30,44,0.75);
  --c-glass: rgba(255,0,128,0.07);
  --nav-width: 220px;
  --header-h: 56px;
  --radius: 10px;
  --radius-pill: 999px;
  --font-main: 'Noto Naskh Arabic', 'Noto Sans Arabic', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', serif;
  --font-sans: 'Noto Sans Arabic', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  --transition: 0.35s cubic-bezier(0.4,0,0.2,1);
  --scroll-margin: 80px;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 17px;
  line-height: 1.7;
  background: var(--c-dark-3);
  color: var(--c-text);
}

body, .dark-body {
  font-family: var(--font-main);
  background: var(--c-dark-3);
  color: var(--c-text);
  min-height: 100vh;
  overflow-x: hidden;
}

a {
  color: var(--c-primary);
  text-decoration: none;
  transition: color var(--transition);
}
a:hover { color: var(--c-secondary); }

img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }

/* ============================
   Aurora Root & Canvas
   ============================ */
.aurora-root {
  position: relative;
  min-height: 100vh;
}

.aurora-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
  opacity: 0.55;
}

/* ============================
   Header — 左侧固定竖排
   ============================ */
.site-header {
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  width: var(--nav-width);
  background: linear-gradient(180deg, rgba(38,23,31,0.97) 0%, rgba(26,15,22,0.99) 100%);
  border-right: 1px solid var(--c-border);
  z-index: 100;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  overflow-x: hidden;
}

.header-announce {
  background: linear-gradient(90deg, var(--c-primary), var(--c-secondary), var(--c-primary));
  background-size: 200% 100%;
  animation: announce-flow 6s linear infinite;
  color: #fff;
  font-size: 0.72rem;
  font-family: var(--font-sans);
  padding: 6px 12px;
  text-align: center;
  line-height: 1.4;
  letter-spacing: 0.02em;
  flex-shrink: 0;
}

@keyframes announce-flow {
  0% { background-position: 0% 0%; }
  100% { background-position: 200% 0%; }
}

.header-inner {
  display: flex;
  flex-direction: column;
  padding: 20px 16px 24px;
  gap: 28px;
  flex: 1;
}

.brand-block {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
}

.site-logo, .site-logo-text {
  display: block;
  color: var(--c-text);
}

.logo-img {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 2px solid var(--c-primary);
}

.brand-name {
  font-size: 1.15rem;
  font-weight: 700;
  font-family: var(--font-sans);
  background: linear-gradient(90deg, var(--c-primary), var(--c-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 0.03em;
  line-height: 1.2;
}

/* 导航结构：nav > p > a */
.main-nav {
  flex: 1;
}

.main-nav p {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.main-nav p a {
  display: block;
  padding: 10px 16px;
  border-radius: var(--radius-pill);
  font-size: 0.88rem;
  font-family: var(--font-sans);
  color: var(--c-text-muted);
  background: transparent;
  border: 1px solid transparent;
  transition: all var(--transition);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  min-height: 40px;
  line-height: 1.3;
  font-weight: 500;
}

.main-nav p a:hover,
.main-nav p a:focus {
  color: #fff;
  background: linear-gradient(90deg, rgba(255,0,128,0.18), rgba(255,0,255,0.12));
  border-color: var(--c-primary);
  transform: translateX(4px);
}

/* ============================
   主体偏移（给左侧导航留空）
   ============================ */
.site-main {
  margin-left: var(--nav-width);
  position: relative;
  z-index: 1;
  min-height: 100vh;
}

/* ============================
   Section scroll-margin
   ============================ */
div[id] {
  scroll-margin-top: var(--scroll-margin);
}

/* ============================
   Hero Section
   ============================ */
.hero-section {
  position: relative;
  min-height: 45vh;
  display: flex;
  align-items: center;
  padding: 60px 48px 60px 56px;
  overflow: hidden;
  border-bottom: 1px solid var(--c-border);
}

.hero-grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,0,128,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,0,128,0.06) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 640px;
  text-align: left;
}

.hero-eyebrow {
  font-size: 0.78rem;
  font-family: var(--font-sans);
  letter-spacing: 0.12em;
  color: var(--c-primary);
  text-transform: uppercase;
  margin-bottom: 14px;
  font-weight: 600;
}

.hero-h1 {
  font-size: clamp(2rem, 4.5vw, 3.4rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 20px;
  background: linear-gradient(135deg, #fff 20%, var(--c-primary) 55%, var(--c-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  font-size: 1rem;
  color: var(--c-text-muted);
  line-height: 1.8;
  margin-bottom: 32px;
  max-width: 520px;
}

.hero-cta {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  padding: 12px 28px;
  min-height: 44px;
  border-radius: var(--radius-pill);
  background: linear-gradient(90deg, var(--c-primary), var(--c-secondary));
  color: #fff;
  font-weight: 600;
  font-family: var(--font-sans);
  font-size: 0.92rem;
  border: none;
  cursor: pointer;
  transition: opacity var(--transition), transform var(--transition), box-shadow var(--transition);
  box-shadow: 0 0 24px rgba(255,0,128,0.45);
}
.btn-primary:hover {
  opacity: 0.88;
  transform: translateY(-2px);
  box-shadow: 0 0 36px rgba(255,0,255,0.5);
  color: #fff;
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  padding: 12px 28px;
  min-height: 44px;
  border-radius: var(--radius-pill);
  background: transparent;
  color: var(--c-primary);
  font-weight: 600;
  font-family: var(--font-sans);
  font-size: 0.92rem;
  border: 1.5px solid var(--c-primary);
  cursor: pointer;
  transition: all var(--transition);
}
.btn-ghost:hover {
  background: rgba(255,0,128,0.12);
  color: var(--c-secondary);
  border-color: var(--c-secondary);
}

/* Prism shards */
.hero-prism {
  position: absolute;
  right: 0;
  top: 0;
  bottom: 0;
  width: 45%;
  pointer-events: none;
  z-index: 1;
}

.prism-shard {
  position: absolute;
  border-radius: 60% 40% 50% 50% / 50% 60% 40% 50%;
  mix-blend-mode: screen;
  filter: blur(48px);
  opacity: 0.55;
  animation: shard-float 8s ease-in-out infinite;
}

.shard-1 {
  width: 280px; height: 280px;
  background: radial-gradient(circle, var(--c-primary), transparent 70%);
  top: -40px; right: 10%;
  animation-delay: 0s;
}
.shard-2 {
  width: 200px; height: 200px;
  background: radial-gradient(circle, var(--c-secondary), transparent 70%);
  bottom: 0; right: 30%;
  animation-delay: -3s;
}
.shard-3 {
  width: 160px; height: 160px;
  background: radial-gradient(circle, #00d4ff, transparent 70%);
  top: 30%; right: 5%;
  animation-delay: -5s;
}

@keyframes shard-float {
  0%, 100% { transform: translateY(0) rotate(0deg) scale(1); }
  33% { transform: translateY(-20px) rotate(8deg) scale(1.05); }
  66% { transform: translateY(14px) rotate(-5deg) scale(0.97); }
}

/* ============================
   Content Layout (aside left + content right)
   ============================ */
.content-with-aside {
  display: flex;
  gap: 0;
  align-items: flex-start;
  padding: 0 48px 0 56px;
}

.site-aside {
  position: sticky;
  top: 80px;
  width: 200px;
  flex-shrink: 0;
  margin-right: 36px;
  padding: 24px 16px;
  background: var(--c-card-bg);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  backdrop-filter: blur(12px);
  margin-top: 40px;
  align-self: flex-start;
}

/* aside is placed before content-with-aside visually but in DOM it's inside article.
   We use the aside + content wrapper trick */
.main-article {
  display: flex;
  flex-direction: column;
}

.content-with-aside {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 36px;
  padding: 40px 48px 60px 56px;
  align-items: start;
}

/* Re-position aside inside content-with-aside via CSS order */
.site-aside {
  position: sticky;
  top: 80px;
  order: -1;
  margin: 0;
}

.aside-title {
  font-size: 0.8rem;
  font-family: var(--font-sans);
  font-weight: 700;
  color: var(--c-primary);
  letter-spacing: 0.08em;
  margin-bottom: 14px;
  text-transform: uppercase;
}

.aside-title span { display: inline-block; }

.aside-nav-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 20px;
}

.aside-link {
  display: block;
  font-size: 0.8rem;
  font-family: var(--font-sans);
  color: var(--c-text-muted);
  padding: 6px 10px;
  border-radius: 6px;
  transition: all var(--transition);
  line-height: 1.4;
}
.aside-link:hover {
  color: #fff;
  background: rgba(255,0,128,0.12);
}

.aside-tag {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.tag-badge {
  font-size: 0.7rem;
  font-family: var(--font-sans);
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--c-primary);
  color: var(--c-primary);
  font-weight: 600;
  letter-spacing: 0.04em;
}

/* ============================
   Page Content Area (正文)
   ============================ */
.page-content-area {
  min-width: 0;
}

/* 正文内的 div（来自 page.content，不加 id 冲突样式） */
.page-content-area div {
  padding: 52px 0;
  border-bottom: 1px solid var(--c-border);
}
.page-content-area div:last-child {
  border-bottom: none;
}

.page-content-area h2 {
  font-size: clamp(1.4rem, 2.5vw, 2rem);
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 20px;
  background: linear-gradient(90deg, #fff, var(--c-primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.page-content-area h2 span {
  display: inline;
}

.page-content-area h3 {
  font-size: 1.18rem;
  font-weight: 600;
  color: var(--c-primary);
  margin-bottom: 12px;
  margin-top: 28px;
}

.page-content-area h3 span { display: inline; }

.page-content-area p {
  color: var(--c-text);
  margin-bottom: 16px;
  line-height: 1.85;
  font-size: 1rem;
}

.page-content-area ul,
.page-content-area ol {
  padding-left: 20px;
  margin-bottom: 16px;
  color: var(--c-text);
  line-height: 1.85;
}

.page-content-area ul { list-style: disc; }
.page-content-area ol { list-style: decimal; }

.page-content-area li { margin-bottom: 8px; }

.page-content-area a {
  color: var(--c-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.page-content-area a:hover { color: var(--c-secondary); }

.page-content-area table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 20px;
  font-size: 0.92rem;
}
.page-content-area th {
  background: rgba(255,0,128,0.15);
  color: var(--c-primary);
  padding: 10px 14px;
  text-align: left;
  border: 1px solid var(--c-border);
  font-weight: 600;
}
.page-content-area td {
  padding: 10px 14px;
  border: 1px solid var(--c-border);
  color: var(--c-text);
  vertical-align: top;
}
.page-content-area tr:nth-child(even) td {
  background: rgba(255,255,255,0.02);
}

.page-content-area blockquote {
  border-left: 3px solid var(--c-primary);
  padding: 12px 20px;
  margin: 20px 0;
  background: var(--c-glass);
  border-radius: 0 var(--radius) var(--radius) 0;
  color: var(--c-text-muted);
  font-style: italic;
}

.page-content-area strong { color: #fff; font-weight: 700; }
.page-content-area em { color: var(--c-secondary); }

/* Cards inside content */
.page-content-area .card,
.page-content-area article {
  background: var(--c-card-bg);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 20px 24px;
  margin-bottom: 16px;
  backdrop-filter: blur(8px);
  box-shadow: 0 4px 24px rgba(255,0,128,0.08);
  transition: box-shadow var(--transition), transform var(--transition);
}
.page-content-area .card:hover,
.page-content-area article:hover {
  box-shadow: 0 8px 36px rgba(255,0,255,0.15);
  transform: translateY(-2px);
}

/* ============================
   Footer
   ============================ */
.site-footer {
  margin-left: var(--nav-width);
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--c-border);
  background: var(--c-dark-3);
}

/* footer > div × n */
.footer-brand-section {
  padding: 36px 56px 20px;
  border-bottom: 1px solid var(--c-border);
  text-align: center;
}

.footer-brand-name {
  font-size: clamp(2.4rem, 6vw, 5rem);
  font-weight: 700;
  font-family: var(--font-sans);
  background: linear-gradient(90deg, var(--c-primary), var(--c-secondary), var(--c-primary));
  background-size: 200% 100%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: brand-shimmer 5s linear infinite;
  letter-spacing: -0.02em;
  line-height: 1;
}

@keyframes brand-shimmer {
  0% { background-position: 0% 0%; }
  100% { background-position: 200% 0%; }
}

.footer-meta-section {
  padding: 18px 56px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.footer-copy {
  font-size: 0.82rem;
  color: var(--c-text-muted);
  font-family: var(--font-sans);
  margin: 0;
}

.footer-links {
  margin: 0;
  font-size: 0.82rem;
  font-family: var(--font-sans);
}
.footer-links a {
  color: var(--c-text-muted);
  transition: color var(--transition);
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  padding: 0 6px;
}
.footer-links a:hover { color: var(--c-primary); }

/* ============================
   Scroll Reveal Animation
   ============================ */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible {
  opacity: 1;
  transform: none;
}

/* ============================
   Responsive — Tablet & Mobile
   ============================ */
@media (max-width: 1024px) {
  :root {
    --nav-width: 180px;
  }
  .hero-section {
    padding: 48px 32px 48px 40px;
  }
  .content-with-aside {
    grid-template-columns: 160px 1fr;
    gap: 24px;
    padding: 32px 32px 48px 40px;
  }
}

@media (max-width: 768px) {
  :root {
    --nav-width: 0px;
    --scroll-margin: 128px;
  }

  html { font-size: 16px; }

  .site-header {
    position: fixed;
    left: 0;
    top: 0;
    bottom: auto;
    right: 0;
    width: 100%;
    flex-direction: column;
    border-right: none;
    border-bottom: 1px solid var(--c-border);
    overflow: visible;
    z-index: 200;
  }

  .header-announce {
    font-size: 0.68rem;
    padding: 5px 10px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .header-inner {
    flex-direction: row;
    align-items: center;
    padding: 10px 16px;
    gap: 12px;
    flex-wrap: wrap;
  }

  .brand-block {
    flex-direction: row;
    align-items: center;
    gap: 8px;
  }

  .brand-name { font-size: 1rem; }

  .logo-img { width: 32px; height: 32px; }

  .main-nav {
    flex: 1;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .main-nav p {
    flex-direction: row;
    gap: 4px;
    flex-wrap: nowrap;
    min-width: max-content;
  }

  .main-nav p a {
    font-size: 0.75rem;
    padding: 8px 12px;
    min-height: 40px;
    white-space: nowrap;
    transform: none !important;
  }

  .site-main {
    margin-left: 0;
    padding-top: 110px;
  }

  .site-footer {
    margin-left: 0;
  }

  .hero-section {
    min-height: auto;
    padding: 36px 20px 36px;
    flex-direction: column;
    align-items: flex-start;
  }

  .hero-prism { display: none; }

  .hero-h1 { font-size: clamp(1.7rem, 7vw, 2.4rem); }

  .content-with-aside {
    display: flex;
    flex-direction: column;
    padding: 24px 20px 40px;
    gap: 24px;
  }

  .site-aside {
    position: static;
    width: 100%;
    order: 0;
    margin: 0;
  }

  .aside-nav-list {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 4px;
  }

  .aside-link {
    font-size: 0.75rem;
    padding: 5px 10px;
    border: 1px solid var(--c-border);
    border-radius: var(--radius-pill);
  }

  .footer-brand-section {
    padding: 24px 20px 16px;
  }
  .footer-meta-section {
    padding: 14px 20px;
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
}

@media (max-width: 375px) {
  .hero-cta { flex-direction: column; }
  .btn-primary, .btn-ghost { width: 100%; justify-content: center; }
  .main-nav p a { font-size: 0.7rem; padding: 8px 10px; }
}

/* ============================
   prefers-reduced-motion
   ============================ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
  .aurora-canvas { display: none; }
}

/* ============================
   Focus styles (a11y)
   ============================ */
:focus-visible {
  outline: 2px solid var(--c-primary);
  outline-offset: 3px;
  border-radius: 4px;
}