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

/* ── 变量 ── */
:root {
  --c-primary: #99ffcc;
  --c-accent: #00ff41;
  --c-dark: #001e3c;
  --c-dark2: #002a52;
  --c-dark3: #003366;
  --c-text: #d4f5e8;
  --c-text-dim: #7abfa0;
  --c-border: rgba(153,255,204,0.18);
  --c-border-strong: rgba(153,255,204,0.35);
  --radius: 10px;
  --font-serif: 'Newsreader', Georgia, 'Times New Roman', serif;
  --font-sans: 'Roboto', system-ui, -apple-system, sans-serif;
  --nav-h: 112px;
  --transition: 0.28s cubic-bezier(0.4,0,0.2,1);
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 8px);
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}
body {
  background-color: var(--c-dark);
  color: var(--c-text);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.7;
  overflow-x: hidden;
  min-height: 100vh;
}
img { display: block; max-width: 100%; height: auto; }
a { color: var(--c-primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--c-accent); }
ul { list-style: none; }
button, input { font-family: inherit; font-size: inherit; }

/* ── 无障碍：屏幕外隐藏 ── */
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

/* ── 有机背景层 ── */
.cell-bg {
  position: fixed; inset: 0; z-index: 0;
  pointer-events: none; overflow: hidden;
}
.cell-svg { width: 100%; height: 100%; }

.orb { animation: orb-breathe 8s ease-in-out infinite alternate; }
.orb-b { animation-delay: -4s; }

@keyframes orb-breathe {
  from { transform: scale(1) translate(0,0); opacity: 0.7; }
  to   { transform: scale(1.15) translate(12px,-8px); opacity: 1; }
}

.cell-path { animation: cell-morph 12s ease-in-out infinite alternate; transform-origin: center; }
.cp2 { animation-delay: -4s; }
.cp3 { animation-delay: -8s; }

@keyframes cell-morph {
  from { opacity: 0.10; d: path("M200,100 C350,20 600,80 700,200 C800,320 750,480 600,520 C450,560 200,480 150,350 C100,220 50,180 200,100Z"); }
  to   { opacity: 0.22; d: path("M220,80 C380,0 620,70 720,210 C820,350 770,500 610,540 C450,580 190,490 140,360 C90,230 60,160 220,80Z"); }
}

/* ── 全局层叠 ── */
header, main, footer { position: relative; z-index: 1; }

/* ══════════════════════════════════
   导航 / 页头
══════════════════════════════════ */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(0,30,60,0.88);
  backdrop-filter: blur(16px) saturate(1.4);
  -webkit-backdrop-filter: blur(16px) saturate(1.4);
  border-bottom: 1px solid var(--c-border);
}

.header-announce {
  background: linear-gradient(90deg, var(--c-dark2), rgba(0,255,65,0.12), var(--c-dark2));
  text-align: center;
  padding: 6px 16px;
  font-family: var(--font-serif);
  font-size: 0.82rem;
  color: var(--c-primary);
  letter-spacing: 0.04em;
  border-bottom: 1px solid var(--c-border);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.brand-row {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 10px 24px;
  border-bottom: 1px solid var(--c-border);
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--c-primary);
  text-decoration: none;
}
.brand-link:hover { color: var(--c-accent); }

.brand-text {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: inherit;
}
.brand-logo { height: 36px; width: auto; }
.brand-mark { height: 28px; width: auto; }

/* 导航：header > nav > p > a */
.main-nav {
  width: 100%;
  padding: 0 16px;
}

.main-nav > p {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 0;
  margin: 0;
  padding: 4px 0;
}

.main-nav > p > a {
  display: inline-flex;
  align-items: center;
  padding: 10px 14px;
  font-family: var(--font-sans);
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--c-text-dim);
  letter-spacing: 0.03em;
  border-radius: 6px;
  transition: color var(--transition), background var(--transition);
  white-space: nowrap;
  min-height: 40px;
}

.main-nav > p > a:hover,
.main-nav > p > a:focus-visible {
  color: var(--c-accent);
  background: rgba(0,255,65,0.07);
  outline: none;
}

/* ══════════════════════════════════
   Hero
══════════════════════════════════ */
.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding: 100px 24px 60px;
}

.hero-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 48px;
  max-width: 1100px;
  width: 100%;
  margin: 0 auto;
}

/* 斜切色带装饰 */
.hero-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(0,255,65,0.06) 0%,
    transparent 45%,
    rgba(153,255,204,0.05) 100%
  );
  clip-path: polygon(0 0, 100% 0, 100% 68%, 60% 100%, 0 82%);
  pointer-events: none;
}
.hero-section::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--c-accent), var(--c-primary), transparent);
  animation: shimmer 4s ease-in-out infinite;
}

@keyframes shimmer {
  0%,100% { opacity: 0.5; transform: scaleX(0.8); }
  50% { opacity: 1; transform: scaleX(1); }
}

/* 双图错位拼贴 */
.hero-media { position: relative; width: 100%; max-width: 560px; }
.hero-collage {
  position: relative;
  height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-img {
  position: absolute;
  object-fit: cover;
  border-radius: 12px;
  border: 1px solid var(--c-border-strong);
}
.hero-img-a {
  width: 65%; height: 85%;
  top: 0; left: 0;
  z-index: 2;
  transform: rotate(-2deg);
  clip-path: ellipse(52% 48% at 50% 50%);
  animation: float-a 6s ease-in-out infinite alternate;
}
.hero-img-b {
  width: 55%; height: 75%;
  bottom: 0; right: 0;
  z-index: 3;
  transform: rotate(2.5deg);
  clip-path: ellipse(50% 46% at 50% 52%);
  animation: float-b 7s ease-in-out infinite alternate;
}

@keyframes float-a {
  from { transform: rotate(-2deg) translateY(0); }
  to   { transform: rotate(-2deg) translateY(-12px); }
}
@keyframes float-b {
  from { transform: rotate(2.5deg) translateY(0); }
  to   { transform: rotate(2.5deg) translateY(10px); }
}

/* 无图时占位 */
.hero-collage:not(:has(.hero-img)) {
  background: radial-gradient(ellipse at 40% 50%, rgba(0,255,65,0.12), rgba(0,30,60,0));
  border: 1px solid var(--c-border);
  border-radius: 12px;
}

.hero-slash {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(135deg, transparent 48%, rgba(0,255,65,0.18) 49%, transparent 51%);
  z-index: 4;
  border-radius: 12px;
}

.hero-copy {
  text-align: center;
  max-width: 620px;
}

.hero-h1 {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 6vw, 3.4rem);
  font-weight: 700;
  line-height: 1.2;
  color: var(--c-primary);
  letter-spacing: 0.02em;
  margin-bottom: 20px;
  text-shadow: 0 0 40px rgba(0,255,65,0.3);
}

.hero-lead {
  font-size: clamp(1rem, 2.2vw, 1.18rem);
  color: var(--c-text-dim);
  line-height: 1.8;
  margin-bottom: 32px;
  font-family: var(--font-serif);
}

.hero-cta {
  display: inline-block;
  padding: 14px 36px;
  background: linear-gradient(135deg, var(--c-accent), var(--c-primary));
  color: var(--c-dark);
  font-weight: 700;
  font-size: 1rem;
  border-radius: 50px;
  letter-spacing: 0.05em;
  transition: transform var(--transition), box-shadow var(--transition), opacity var(--transition);
  box-shadow: 0 0 24px rgba(0,255,65,0.25);
  min-height: 48px;
  line-height: 1.2;
}
.hero-cta:hover {
  transform: translateY(-3px) scale(1.04);
  box-shadow: 0 0 40px rgba(0,255,65,0.4);
  color: var(--c-dark);
  opacity: 0.92;
}

/* ══════════════════════════════════
   正文区域（main > article > div）
══════════════════════════════════ */
.content-section {
  padding: 64px 24px 80px;
  max-width: 1300px;
  margin: 0 auto;
}

.content-wrap {
  display: flex;
  gap: 48px;
  align-items: flex-start;
}

/* aside 在内容左侧 */
.content-aside {
  flex: 0 0 200px;
  position: sticky;
  top: calc(var(--nav-h) + 16px);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  background: rgba(0,42,82,0.5);
  padding: 20px 16px;
  backdrop-filter: blur(8px);
  overflow: hidden;
}

.aside-label {
  font-family: var(--font-serif);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  color: var(--c-accent);
  text-transform: uppercase;
  margin-bottom: 14px;
  font-weight: 700;
}

.aside-link {
  display: block;
  padding: 7px 8px;
  font-size: 0.85rem;
  color: var(--c-text-dim);
  border-left: 2px solid transparent;
  border-radius: 4px;
  transition: color var(--transition), border-color var(--transition), background var(--transition);
  line-height: 1.4;
  min-height: 40px;
  display: flex;
  align-items: center;
}
.aside-link:hover {
  color: var(--c-primary);
  border-left-color: var(--c-accent);
  background: rgba(0,255,65,0.06);
}

.aside-deco {
  margin-top: 16px;
  display: flex;
  justify-content: center;
  opacity: 0.6;
}
.aside-deco svg { width: 40px; height: 100px; }
.aside-vine { animation: vine-grow 6s ease-in-out infinite alternate; stroke-dasharray: 180; stroke-dashoffset: 0; }
@keyframes vine-grow {
  from { stroke-dashoffset: 180; opacity: 0.3; }
  to   { stroke-dashoffset: 0; opacity: 0.7; }
}

/* 正文主容器 */
.content-main {
  flex: 1 1 0;
  min-width: 0;
}

/* ── 正文内 div 样式（来自 page.content） ── */
.content-main div {
  margin-bottom: 72px;
  padding-top: 8px;
  scroll-margin-top: calc(var(--nav-h) + 16px);
}

.content-main h2 {
  font-family: var(--font-serif);
  font-size: clamp(1.45rem, 3.5vw, 2rem);
  font-weight: 700;
  color: var(--c-primary);
  margin-bottom: 24px;
  line-height: 1.3;
  position: relative;
  padding-bottom: 14px;
}
.content-main h2::after {
  content: '';
  position: absolute;
  left: 0; bottom: 0;
  width: 56px; height: 2px;
  background: linear-gradient(90deg, var(--c-accent), transparent);
  border-radius: 2px;
}

.content-main h3 {
  font-family: var(--font-serif);
  font-size: clamp(1.1rem, 2.5vw, 1.35rem);
  font-weight: 600;
  color: var(--c-primary);
  margin: 32px 0 14px;
  line-height: 1.4;
}

.content-main p {
  font-size: 1.05rem;
  line-height: 1.85;
  color: var(--c-text);
  margin-bottom: 18px;
  font-family: var(--font-sans);
}

.content-main ul, .content-main ol {
  margin: 0 0 18px 20px;
  list-style: disc;
}
.content-main ol { list-style: decimal; }
.content-main li {
  margin-bottom: 8px;
  line-height: 1.75;
  color: var(--c-text);
  font-size: 1.02rem;
}

.content-main strong { color: var(--c-primary); font-weight: 600; }
.content-main em { color: var(--c-text-dim); font-style: italic; }

.content-main a {
  color: var(--c-primary);
  border-bottom: 1px solid rgba(153,255,204,0.3);
  transition: color var(--transition), border-color var(--transition);
}
.content-main a:hover {
  color: var(--c-accent);
  border-bottom-color: var(--c-accent);
}

.content-main blockquote {
  border-left: 3px solid var(--c-accent);
  padding: 16px 20px;
  margin: 24px 0;
  background: rgba(0,255,65,0.05);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-family: var(--font-serif);
  font-size: 1.06rem;
  color: var(--c-text-dim);
  font-style: italic;
}

.content-main table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 0.96rem;
}
.content-main th {
  background: rgba(0,255,65,0.1);
  color: var(--c-accent);
  padding: 10px 14px;
  text-align: left;
  font-family: var(--font-serif);
  font-weight: 600;
  border-bottom: 2px solid var(--c-border);
}
.content-main td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--c-border);
  color: var(--c-text);
}
.content-main tr:hover td { background: rgba(153,255,204,0.03); }

/* ── h2 > span 装饰 ── */
.content-main h2 > span,
.content-main h3 > span {
  display: inline;
  background: linear-gradient(120deg, var(--c-primary), var(--c-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── 卡片样式（描边无阴影，圆角10px）── */
.content-main .card {
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 16px;
  background: rgba(0,42,82,0.35);
  transition: border-color var(--transition), background var(--transition);
}
.content-main .card:hover {
  border-color: var(--c-border-strong);
  background: rgba(0,42,82,0.55);
}

/* ══════════════════════════════════
   页脚
══════════════════════════════════ */
.site-footer {
  border-top: 1px solid var(--c-border);
  background: rgba(0,20,48,0.95);
  position: relative;
  overflow: hidden;
}

.site-footer::before {
  content: '';
  position: absolute;
  top: -1px; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, transparent, var(--c-primary), var(--c-accent), transparent);
}

.footer-top {
  text-align: center;
  padding: 56px 24px 40px;
  border-bottom: 1px solid var(--c-border);
}

.footer-cta-title {
  font-family: var(--font-serif);
  font-size: clamp(1.3rem, 3vw, 1.9rem);
  font-weight: 700;
  color: var(--c-primary);
  margin-bottom: 12px;
}
.footer-cta-title > span {
  background: linear-gradient(120deg, var(--c-primary), var(--c-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.footer-cta-desc {
  color: var(--c-text-dim);
  margin-bottom: 28px;
  font-size: 1rem;
}

.footer-form {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  max-width: 480px;
  margin: 0 auto;
}
.footer-form input[type="email"] {
  flex: 1 1 220px;
  padding: 12px 18px;
  background: rgba(0,42,82,0.6);
  border: 1px solid var(--c-border);
  border-radius: 50px;
  color: var(--c-text);
  outline: none;
  transition: border-color var(--transition);
  min-height: 44px;
}
.footer-form input[type="email"]::placeholder { color: var(--c-text-dim); }
.footer-form input[type="email"]:focus { border-color: var(--c-accent); }
.footer-form button {
  padding: 12px 28px;
  background: linear-gradient(135deg, var(--c-accent), var(--c-primary));
  color: var(--c-dark);
  font-weight: 700;
  border: none;
  border-radius: 50px;
  cursor: pointer;
  transition: opacity var(--transition), transform var(--transition);
  min-height: 44px;
  letter-spacing: 0.04em;
}
.footer-form button:hover { opacity: 0.88; transform: translateY(-2px); }

.footer-main {
  display: flex;
  gap: 48px;
  padding: 48px 48px 40px;
  max-width: 1100px;
  margin: 0 auto;
  flex-wrap: wrap;
}

.footer-brand-col { flex: 1 1 260px; }
.footer-links-col { flex: 1 1 200px; }

/* footer address */
.footer-brand-col address {
  font-style: normal;
}
.footer-brand-name {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--c-primary);
  margin-bottom: 10px;
}
.footer-brand-desc {
  color: var(--c-text-dim);
  font-size: 0.92rem;
  line-height: 1.7;
  margin-bottom: 12px;
}
.footer-contact {
  font-size: 0.9rem;
  color: var(--c-text-dim);
  border-bottom: 1px solid transparent;
  min-height: 40px;
  display: inline-flex;
  align-items: center;
}
.footer-contact:hover { color: var(--c-primary); border-bottom-color: var(--c-primary); }

/* footer ul > li > a */
.footer-links-col ul {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.footer-links-col ul > li > a {
  display: flex;
  align-items: center;
  padding: 7px 0;
  font-size: 0.9rem;
  color: var(--c-text-dim);
  min-height: 40px;
  transition: color var(--transition), padding-left var(--transition);
}
.footer-links-col ul > li > a:hover {
  color: var(--c-primary);
  padding-left: 8px;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  padding: 20px 48px;
  border-top: 1px solid var(--c-border);
  font-size: 0.8rem;
  color: var(--c-text-dim);
}

/* ══════════════════════════════════
   Scroll Reveal 动效
══════════════════════════════════ */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ══════════════════════════════════
   响应式
══════════════════════════════════ */
@media (min-width: 900px) {
  .hero-inner {
    flex-direction: row;
    gap: 64px;
  }
  .hero-copy { text-align: left; }
  .hero-media { max-width: 480px; }
  .hero-collage { height: 380px; }
}

@media (max-width: 900px) {
  :root { --nav-h: 128px; }
  .content-wrap { flex-direction: column; gap: 32px; }
  .content-aside {
    position: static;
    width: 100%;
  }
  .footer-main { padding: 40px 24px; gap: 32px; }
  .footer-bottom { padding: 16px 24px; flex-direction: column; align-items: flex-start; gap: 6px; }
}

@media (max-width: 600px) {
  :root { --nav-h: 140px; }
  .header-announce { font-size: 0.76rem; }
  .brand-text { font-size: 1.1rem; }
  .main-nav > p > a { padding: 8px 10px; font-size: 0.82rem; }
  .hero-section { padding: 80px 16px 40px; }
  .hero-collage { height: 240px; }
  .content-section { padding: 40px 16px 60px; }
  .footer-top { padding: 40px 16px 32px; }
  .footer-bottom { font-size: 0.75rem; }
  .hero-h1 { font-size: 1.75rem; }
}

/* ══════════════════════════════════
   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; }
  .reveal { opacity: 1; transform: none; }
}