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

/* ===== 根变量 ===== */
:root {
  --c-neon: #80ff00;
  --c-green: #00ff00;
  --c-dark: #1f2617;
  --c-dark2: #161c10;
  --c-dark3: #2b3520;
  --c-text: #e8f5d0;
  --c-muted: #a0bf70;
  --c-border: #80ff00;
  --c-card-bg: #1a2114;
  --nav-w: 240px;
  --nav-w-collapsed: 56px;
  --font-title: 'Cinzel', 'Georgia', serif;
  --font-body: 'Josefin Sans', 'Helvetica Neue', Arial, sans-serif;
  --radius: 10px;
  --transition: 0.2s ease;
}

/* ===== 重置 ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  background: var(--c-dark);
  color: var(--c-text);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
}
a { color: var(--c-neon); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--c-green); }
img { max-width: 100%; height: auto; display: block; }
ul, ol, menu { list-style: none; }
button, input, select, textarea { font-family: var(--font-body); font-size: 1rem; }

/* ===== 页面骨架 ===== */
.page-shell {
  display: flex;
  min-height: 100vh;
}

/* ===== 左侧导航 details/summary/menu ===== */
.sidenav {
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  width: var(--nav-w);
  background: var(--c-dark2);
  border-right: 2px solid var(--c-neon);
  z-index: 900;
  display: flex;
  flex-direction: column;
  transition: width var(--transition);
  overflow: hidden;
}

.sidenav-toggle {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 20px 12px 16px;
  cursor: pointer;
  border-bottom: 1px solid var(--c-dark3);
  list-style: none;
  min-height: 80px;
}
.sidenav-toggle::-webkit-details-marker { display: none; }

.toggle-icon {
  font-size: 1.6rem;
  color: var(--c-neon);
  line-height: 1;
  font-weight: 700;
}

.brand-mark {
  display: flex;
  align-items: center;
  justify-content: center;
}
.brand-text-icon {
  font-family: var(--font-title);
  font-size: 0.6rem;
  font-weight: 700;
  color: var(--c-neon);
  letter-spacing: 0.05em;
  text-align: center;
  line-height: 1.2;
  word-break: break-all;
}
.brand-icon { width: 36px; height: 36px; object-fit: contain; }

.sidenav-menu {
  flex: 1;
  overflow-y: auto;
  padding: 12px 0;
  scrollbar-width: thin;
  scrollbar-color: var(--c-neon) var(--c-dark2);
}
.sidenav-menu li { width: 100%; }
.sidenav-menu li a {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 16px;
  color: var(--c-text);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  line-height: 1.4;
  border-left: 3px solid transparent;
  transition: background var(--transition), border-color var(--transition), color var(--transition);
  min-height: 44px;
}
.sidenav-menu li a:hover,
.sidenav-menu li a[aria-current="page"] {
  background: var(--c-dark3);
  border-left-color: var(--c-neon);
  color: var(--c-neon);
}
.nav-bullet {
  color: var(--c-neon);
  font-size: 0.55rem;
  margin-top: 4px;
  flex-shrink: 0;
}
.nav-label { flex: 1; }

/* ===== 主区域 ===== */
.main-wrap {
  margin-left: var(--nav-w);
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
}
main { flex: 1; }
div { width: 100%; }

/* ===== Hero — 首页 ===== */
.hero-section {
  position: relative;
  min-height: 70vh;
  background: var(--c-dark2);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border-bottom: 3px solid var(--c-neon);
  padding: 60px 40px;
}
.hero-bg-text {
  position: absolute;
  font-family: var(--font-title);
  font-size: clamp(8rem, 20vw, 18rem);
  font-weight: 700;
  color: var(--c-neon);
  opacity: 0.04;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
  white-space: nowrap;
  letter-spacing: -0.05em;
  filter: saturate(150%);
}
.hero-sticker {
  position: absolute;
  font-size: 2.5rem;
  color: var(--c-green);
  pointer-events: none;
  mix-blend-mode: screen;
  animation: jitter 3s ease-in-out infinite;
  filter: saturate(200%);
}
.s1 { top: 15%; left: 8%; animation-delay: 0s; transform: rotate(-12deg); }
.s2 { top: 20%; right: 10%; animation-delay: 0.7s; transform: rotate(8deg); }
.s3 { bottom: 20%; left: 15%; animation-delay: 1.4s; transform: rotate(20deg); }
.s4 { bottom: 25%; right: 8%; animation-delay: 0.3s; transform: rotate(-5deg); }
.s5 { top: 50%; right: 5%; animation-delay: 1s; transform: rotate(15deg); }

@keyframes jitter {
  0%, 100% { transform: rotate(var(--r, -12deg)) translate(0, 0); }
  25% { transform: rotate(var(--r, -12deg)) translate(-2px, 2px); }
  50% { transform: rotate(var(--r, -12deg)) translate(2px, -1px); }
  75% { transform: rotate(var(--r, -12deg)) translate(-1px, 1px); }
}

.hero-inner {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 760px;
}
.hero-eyebrow {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--c-neon);
  text-transform: uppercase;
  margin-bottom: 16px;
  border: 1px solid var(--c-neon);
  display: inline-block;
  padding: 4px 14px;
  border-radius: 2px;
}
.hero-h1 {
  font-family: var(--font-title);
  font-size: clamp(1.8rem, 4vw, 3.2rem);
  font-weight: 700;
  color: var(--c-neon);
  line-height: 1.2;
  margin-bottom: 20px;
  letter-spacing: 0.02em;
}
.subtitle, .hero-desc {
  font-size: 1.05rem;
  color: var(--c-muted);
  line-height: 1.7;
  margin-bottom: 32px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}
.hero-cta-row {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ===== 按钮 ===== */
.btn-primary {
  display: inline-block;
  background: var(--c-neon);
  color: var(--c-dark);
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: 0.08em;
  padding: 12px 28px;
  border-radius: var(--radius);
  border: 2px solid var(--c-neon);
  cursor: pointer;
  transition: background var(--transition), color var(--transition), transform var(--transition);
  min-height: 44px;
  line-height: 1.2;
}
.btn-primary:hover {
  background: var(--c-green);
  border-color: var(--c-green);
  color: var(--c-dark);
  transform: translateY(-2px);
}
.btn-outline {
  display: inline-block;
  background: transparent;
  color: var(--c-neon);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.9rem;
  letter-spacing: 0.08em;
  padding: 12px 28px;
  border-radius: var(--radius);
  border: 2px solid var(--c-neon);
  cursor: pointer;
  transition: background var(--transition), color var(--transition), transform var(--transition);
  min-height: 44px;
  line-height: 1.2;
}
.btn-outline:hover {
  background: var(--c-neon);
  color: var(--c-dark);
  transform: translateY(-2px);
}

/* ===== 跑马灯 ===== */
.marquee-strip {
  background: var(--c-neon);
  color: var(--c-dark);
  overflow: hidden;
  padding: 10px 0;
  border-top: 2px solid var(--c-green);
  border-bottom: 2px solid var(--c-green);
}
.marquee-track {
  display: flex;
  gap: 32px;
  white-space: nowrap;
  animation: marquee-scroll 20s linear infinite;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.12em;
}
.marquee-track span { flex-shrink: 0; }
@keyframes marquee-scroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ===== 内页 Hero ===== */
.inner-hero {
  position: relative;
  overflow: hidden;
  background: var(--c-dark2);
  border-bottom: 3px solid var(--c-neon);
  padding: 60px 48px 48px;
  min-height: 260px;
}
.inner-hero-bg {
  position: absolute;
  right: -20px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-title);
  font-size: clamp(5rem, 14vw, 11rem);
  font-weight: 700;
  color: var(--c-neon);
  opacity: 0.05;
  pointer-events: none;
  letter-spacing: -0.05em;
  filter: saturate(150%);
}
.inner-hero h1 {
  font-family: var(--font-title);
  font-size: clamp(1.5rem, 3.2vw, 2.6rem);
  font-weight: 700;
  color: var(--c-neon);
  line-height: 1.25;
  margin-bottom: 14px;
  position: relative;
  z-index: 2;
  letter-spacing: 0.02em;
}
.inner-hero .subtitle {
  margin-bottom: 0;
  position: relative;
  z-index: 2;
}
.page-eyebrow {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--c-neon);
  border: 1px solid var(--c-neon);
  display: inline-block;
  padding: 3px 12px;
  border-radius: 2px;
  margin-bottom: 14px;
  position: relative;
  z-index: 2;
}
.page-date {
  font-size: 0.8rem;
  color: var(--c-muted);
  margin-top: 12px;
  position: relative;
  z-index: 2;
}

/* ===== 内容区（aside + body）===== */
.content-section {
  display: flex;
  gap: 0;
  padding: 48px 0;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  padding-left: 24px;
  padding-right: 24px;
}

/* ===== 侧边栏在左 ===== */
.page-aside {
  width: 220px;
  flex-shrink: 0;
  margin-right: 40px;
  position: sticky;
  top: 24px;
  align-self: flex-start;
}
.aside-title {
  font-family: var(--font-title);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--c-neon);
  letter-spacing: 0.08em;
  margin-bottom: 4px;
  border-bottom: 2px solid var(--c-neon);
  padding-bottom: 8px;
}
.page-aside .subtitle {
  font-size: 0.78rem;
  color: var(--c-muted);
  margin-bottom: 14px;
}
.aside-links {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 20px;
}
.aside-links li a {
  display: block;
  font-size: 0.82rem;
  color: var(--c-text);
  padding: 7px 10px;
  border-left: 2px solid var(--c-dark3);
  transition: border-color var(--transition), color var(--transition), background var(--transition);
  border-radius: 0 4px 4px 0;
  min-height: 36px;
  line-height: 1.4;
}
.aside-links li a:hover {
  border-left-color: var(--c-neon);
  color: var(--c-neon);
  background: var(--c-dark3);
}
.aside-faq-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 20px;
  list-style: decimal inside;
  counter-reset: faq-counter;
}
.aside-faq-list li {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.aside-faq-list li a {
  font-size: 0.8rem;
  color: var(--c-text);
  transition: color var(--transition);
  line-height: 1.4;
}
.aside-faq-list li a:hover { color: var(--c-neon); }
.aside-faq-list li small {
  font-size: 0.7rem;
  color: var(--c-muted);
  line-height: 1.3;
}
.aside-badge {
  display: inline-block;
  background: var(--c-neon);
  color: var(--c-dark);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  padding: 4px 10px;
  border-radius: 3px;
  transform: rotate(-2deg);
  margin-top: 8px;
}
.about-badge { transform: rotate(2deg); }
.contact-badge { background: var(--c-green); }

/* ===== 正文容器 ===== */
.content-body {
  flex: 1;
  min-width: 0;
}
.prose-content {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--c-text);
  max-width: 780px;
}
.prose-content h2 {
  font-family: var(--font-title);
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--c-neon);
  margin: 2em 0 0.5em;
  letter-spacing: 0.03em;
  border-left: 4px solid var(--c-neon);
  padding-left: 14px;
}
.prose-content h3 {
  font-family: var(--font-title);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--c-green);
  margin: 1.6em 0 0.4em;
}
.prose-content p { margin-bottom: 1.2em; }
.prose-content ul, .prose-content ol {
  margin-bottom: 1.2em;
  padding-left: 1.5em;
}
.prose-content ul { list-style: disc; }
.prose-content ol { list-style: decimal; }
.prose-content li { margin-bottom: 0.4em; }
.prose-content strong { color: var(--c-neon); font-weight: 700; }
.prose-content em { color: var(--c-muted); }
.prose-content a { color: var(--c-neon); text-decoration: underline; text-underline-offset: 3px; }
.prose-content a:hover { color: var(--c-green); }
.prose-content blockquote {
  border-left: 3px solid var(--c-neon);
  padding-left: 20px;
  color: var(--c-muted);
  font-style: italic;
  margin: 1.5em 0;
}
.prose-content table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 1.5em;
  font-size: 0.9rem;
}
.prose-content th, .prose-content td {
  border: 1px solid var(--c-dark3);
  padding: 10px 14px;
  text-align: left;
}
.prose-content th {
  background: var(--c-dark3);
  color: var(--c-neon);
  font-weight: 600;
}
.prose-content code {
  background: var(--c-dark3);
  color: var(--c-green);
  padding: 2px 6px;
  border-radius: 3px;
  font-size: 0.88em;
}
.date-row {
  font-size: 0.8rem;
  color: var(--c-muted);
  margin-top: 24px;
  padding-top: 16px;
  border-top: 1px solid var(--c-dark3);
}

/* ===== FAQ 格状列表 ===== */
.faq-grid-section, .related-faqs-section {
  background: var(--c-dark2);
  padding: 48px 24px;
  border-top: 2px solid var(--c-dark3);
}
.faq-grid-section h2, .related-faqs-section h2 {
  font-family: var(--font-title);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--c-neon);
  margin-bottom: 6px;
  text-align: center;
  letter-spacing: 0.04em;
}
.faq-grid-section .subtitle, .related-faqs-section .subtitle {
  text-align: center;
  margin-bottom: 32px;
  margin-left: auto;
  margin-right: auto;
}
.faq-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
  max-width: 1100px;
  margin: 0 auto;
  list-style: none;
  counter-reset: faq-grid-c;
}
.faq-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px;
  background: var(--c-card-bg);
  border: 2px solid var(--c-neon);
  border-radius: var(--radius);
  color: var(--c-text);
  transition: border-color var(--transition), transform var(--transition), background var(--transition);
  min-height: 120px;
}
.faq-card:hover {
  border-color: var(--c-green);
  background: var(--c-dark3);
  transform: translateY(-3px) rotate(0.5deg);
  color: var(--c-text);
}
.card-num {
  font-family: var(--font-title);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--c-neon);
  opacity: 0.4;
  line-height: 1;
  letter-spacing: -0.02em;
}
.faq-card strong {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--c-text);
  line-height: 1.4;
}
.faq-card small {
  font-size: 0.78rem;
  color: var(--c-muted);
  line-height: 1.4;
}

/* ===== CTA strip ===== */
.cta-strip {
  background: var(--c-dark3);
  border-top: 2px solid var(--c-neon);
  border-bottom: 2px solid var(--c-neon);
  padding: 48px 24px;
  text-align: center;
}
.cta-strip h2 {
  font-family: var(--font-title);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--c-neon);
  margin-bottom: 6px;
}
.cta-strip .subtitle { margin-bottom: 28px; }
.cta-row {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ===== 联系表单 ===== */
.contact-form-wrap {
  margin-top: 40px;
  padding-top: 32px;
  border-top: 2px solid var(--c-dark3);
  max-width: 600px;
}
.contact-form-wrap h2 {
  font-family: var(--font-title);
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--c-neon);
  margin-bottom: 6px;
  letter-spacing: 0.03em;
}
.contact-form-wrap .subtitle { margin-bottom: 24px; }
.contact-form { display: flex; flex-direction: column; gap: 20px; }
.form-row { display: flex; flex-direction: column; gap: 6px; }
.form-row label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--c-muted);
  letter-spacing: 0.06em;
}
.form-row input, .form-row select, .form-row textarea {
  background: var(--c-dark2);
  border: 2px solid var(--c-dark3);
  border-radius: var(--radius);
  color: var(--c-text);
  padding: 10px 14px;
  transition: border-color var(--transition);
  min-height: 44px;
  resize: vertical;
}
.form-row input:focus, .form-row select:focus, .form-row textarea:focus {
  outline: none;
  border-color: var(--c-neon);
}
.form-row select { appearance: none; cursor: pointer; }
.form-submit { align-self: flex-start; margin-top: 8px; }

/* ===== 页脚 ===== */
.site-footer {
  background: var(--c-dark2);
  border-top: 3px solid var(--c-neon);
  margin-top: auto;
}
.footer-top {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 32px;
  padding: 48px 40px 32px;
  max-width: 1200px;
  margin: 0 auto;
}
.footer-brand .footer-logo {
  display: block;
  font-family: var(--font-title);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--c-neon);
  letter-spacing: 0.05em;
  margin-bottom: 10px;
}
.footer-brand p {
  font-size: 0.83rem;
  color: var(--c-muted);
  line-height: 1.6;
}
.footer-nav ul {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.footer-nav ul li a {
  font-size: 0.83rem;
  color: var(--c-muted);
  transition: color var(--transition);
  display: block;
  padding: 5px 0;
  min-height: 36px;
  line-height: 1.4;
}
.footer-nav ul li a:hover { color: var(--c-neon); }
.footer-contact h3 {
  font-family: var(--font-title);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--c-neon);
  margin-bottom: 8px;
  letter-spacing: 0.05em;
}
.footer-contact p {
  font-size: 0.83rem;
  color: var(--c-muted);
  margin-bottom: 16px;
  line-height: 1.5;
}
.footer-btn { font-size: 0.82rem; padding: 10px 20px; }
.footer-bottom {
  border-top: 1px solid var(--c-dark3);
  padding: 16px 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 0.78rem;
  color: var(--c-muted);
  max-width: 1200px;
  margin: 0 auto;
}
.footer-bottom a { color: var(--c-muted); }
.footer-bottom a:hover { color: var(--c-neon); }
.footer-sep { color: var(--c-dark3); }

/* ===== Scroll Reveal 动效 ===== */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== 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;
  }
  .marquee-track { animation: none; }
  .reveal { opacity: 1; transform: none; }
}

/* ===== 断点：平板 ===== */
@media (max-width: 1024px) {
  :root { --nav-w: 200px; }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .footer-contact { grid-column: 1 / -1; }
  .content-section { padding-left: 16px; padding-right: 16px; }
}

/* ===== 断点：移动端 ===== */
@media (max-width: 768px) {
  :root { --nav-w: 0px; }

  .sidenav {
    width: 100%;
    height: auto;
    position: relative;
    border-right: none;
    border-bottom: 2px solid var(--c-neon);
    flex-direction: row;
    flex-wrap: wrap;
  }
  .sidenav[open] {
    height: auto;
  }
  .sidenav-toggle {
    flex-direction: row;
    justify-content: flex-start;
    padding: 12px 16px;
    min-height: 56px;
    width: 100%;
    border-bottom: 1px solid var(--c-dark3);
    gap: 12px;
  }
  .sidenav-menu {
    width: 100%;
    padding: 8px 0;
    max-height: 60vh;
    overflow-y: auto;
  }
  .sidenav-menu li a {
    padding: 10px 20px;
    font-size: 0.88rem;
    min-height: 44px;
  }

  .main-wrap { margin-left: 0; }

  .page-shell {
    flex-direction: column;
  }

  .hero-section {
    min-height: 70vh;
    padding: 48px 20px;
  }
  .hero-h1 { font-size: clamp(1.5rem, 7vw, 2.4rem); }
  .hero-bg-text { font-size: 6rem; }

  .inner-hero { padding: 40px 20px 32px; }
  .inner-hero h1 { font-size: clamp(1.3rem, 5vw, 2rem); }

  .content-section {
    flex-direction: column;
    padding: 32px 16px;
    gap: 32px;
  }
  .page-aside {
    width: 100%;
    margin-right: 0;
    position: static;
  }

  .footer-top {
    grid-template-columns: 1fr;
    padding: 32px 20px 24px;
    gap: 24px;
  }
  .footer-contact { grid-column: auto; }
  .footer-bottom {
    padding: 14px 20px;
    gap: 8px;
    font-size: 0.72rem;
  }

  .faq-grid { grid-template-columns: 1fr; }
  .hero-cta-row, .cta-row { flex-direction: column; align-items: center; }

  .contact-form-wrap { max-width: 100%; }
}

@media (max-width: 480px) {
  .hero-section { padding: 40px 16px; }
  .inner-hero { padding: 32px 16px 24px; }
  .faq-grid-section, .related-faqs-section { padding: 32px 16px; }
  .cta-strip { padding: 32px 16px; }
}