/* ============== 基础重置 ============== */
*,*::before,*::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: 'Noto Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
  background: #06070d;
  color: #e2e8f0;
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
img,svg { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }

/* ============== 全局背景纹理 ============== */
body::before {
  content: '';
  position: fixed; inset: 0; z-index: -2;
  background:
    radial-gradient(1200px 800px at 80% -10%, rgba(99,102,241,.25), transparent 60%),
    radial-gradient(900px 700px at -10% 20%, rgba(34,211,238,.18), transparent 60%),
    radial-gradient(900px 900px at 50% 100%, rgba(236,72,153,.14), transparent 60%),
    linear-gradient(180deg,#06070d 0%,#08091a 50%,#06070d 100%);
}
body::after {
  content: '';
  position: fixed; inset: 0; z-index: -1;
  background-image:
    linear-gradient(rgba(148,163,184,.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148,163,184,.06) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, rgba(0,0,0,.8) 0%, transparent 75%);
  pointer-events: none;
}

/* ============== 加载器 ============== */
.loader {
  position: fixed; inset: 0; z-index: 9999;
  background: #06070d;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 24px;
  transition: opacity .8s ease, visibility .8s ease;
}
.loader.hide { opacity: 0; visibility: hidden; }
.loader-ring {
  width: 64px; height: 64px;
  border: 3px solid rgba(34,211,238,.2);
  border-top-color: #22d3ee;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}
.loader-text {
  font-family: 'JetBrains Mono', monospace;
  letter-spacing: .2em;
  color: #94a3b8;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ============== 导航 ============== */
.nav {
  position: fixed; top: 0; left: 0; right: 0;
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 36px;
  z-index: 100;
  transition: background .4s ease, backdrop-filter .4s ease, border-color .4s ease;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(8,9,26,.65);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom-color: rgba(148,163,184,.15);
}
.nav-brand {
  display: flex; align-items: center; gap: 12px;
}
.brand-mark {
  width: 40px; height: 40px;
  display: grid; place-items: center;
  font-family: 'Noto Sans SC'; font-weight: 900;
  background: linear-gradient(135deg,#22d3ee,#a78bfa);
  color: #06121f;
  border-radius: 10px;
  box-shadow: 0 8px 28px rgba(34,211,238,.35);
}
.brand-text strong {
  display: block; font-size: 16px; letter-spacing: .04em;
  color: #f8fafc;
}
.brand-text small {
  display: block; font-family: 'JetBrains Mono',monospace;
  font-size: 11px; color: #64748b; letter-spacing: .12em;
}
.nav-links { display: flex; gap: 28px; }
.nav-links a {
  font-size: 14px; color: #cbd5e1;
  position: relative;
  transition: color .3s ease;
}
.nav-links a::after {
  content: ''; position: absolute; left: 0; bottom: -6px;
  width: 0; height: 2px;
  background: linear-gradient(90deg,#22d3ee,#a78bfa);
  transition: width .3s ease;
}
.nav-links a:hover { color: #fff; }
.nav-links a:hover::after { width: 100%; }
.nav-cta {
  padding: 10px 18px; border-radius: 999px;
  background: linear-gradient(135deg,#22d3ee,#a78bfa);
  color: #06121f; font-weight: 700; font-size: 13px;
  box-shadow: 0 6px 20px rgba(99,102,241,.35);
  transition: transform .25s ease, box-shadow .25s ease;
}
.nav-cta:hover { transform: translateY(-1px); box-shadow: 0 10px 30px rgba(99,102,241,.5); }

@media (max-width: 820px) {
  .nav-links { display: none; }
  .nav { padding: 12px 18px; }
}

/* ============== 汉堡按钮（移动端） ============== */
.nav-toggle {
  display: none;
  width: 40px; height: 40px;
  padding: 0;
  background: rgba(15,23,42,.6);
  border: 1px solid rgba(148,163,184,.25);
  border-radius: 10px;
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  transition: background .25s ease, border-color .25s ease;
}
.nav-toggle:hover { border-color: rgba(34,211,238,.5); background: rgba(15,23,42,.85); }
.nav-toggle:focus-visible { outline: 2px solid #22d3ee; outline-offset: 2px; }
.nav-toggle-bar {
  display: block;
  width: 18px; height: 2px;
  background: #e2e8f0;
  border-radius: 2px;
  transition: transform .3s ease, opacity .3s ease;
  transform-origin: center;
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 820px) {
  .nav-toggle { display: flex; }

  .nav-links {
    display: flex;
    position: absolute;
    top: 100%; left: 12px; right: 12px;
    margin-top: 10px;
    flex-direction: column;
    gap: 4px;
    padding: 14px;
    background: linear-gradient(180deg, rgba(8,9,26,.92), rgba(8,9,26,.85));
    border: 1px solid rgba(148,163,184,.2);
    border-radius: 14px;
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    box-shadow: 0 18px 48px rgba(0,0,0,.5);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity .25s ease, transform .25s ease, visibility .25s ease;
  }
  .nav-links.open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }
  .nav-links a {
    padding: 10px 14px;
    border-radius: 8px;
    font-size: 15px;
    color: #e2e8f0;
    transition: background .2s ease, color .2s ease;
  }
  .nav-links a:hover,
  .nav-links a:focus-visible {
    background: rgba(34,211,238,.1);
    color: #67e8f9;
  }
  .nav-links a::after { display: none; }

  .nav-cta { padding: 8px 14px; font-size: 12px; }
}

/* ============== HERO ============== */
.hero {
  position: relative;
  min-height: 100vh;
  padding: 120px 36px 80px;
  overflow: hidden;
}
.hero-canvas {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  z-index: 0;
}
.hero-mask {
  position: absolute; inset: 0; z-index: 1;
  background:
    radial-gradient(ellipse at 30% 40%, transparent 0%, rgba(6,7,13,.65) 70%),
    linear-gradient(180deg, transparent 60%, #06070d 100%);
  pointer-events: none;
}
.hero-grid {
  position: relative; z-index: 2;
  max-width: 1280px; margin: 0 auto;
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 56px; align-items: center;
}
.hero-left .chip {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 14px;
  background: rgba(34,211,238,.12);
  border: 1px solid rgba(34,211,238,.4);
  border-radius: 999px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px; letter-spacing: .15em;
  color: #67e8f9;
}
.chip-dot {
  width: 8px; height: 8px; background: #22d3ee; border-radius: 50%;
  box-shadow: 0 0 0 0 rgba(34,211,238,.7);
  animation: pulse 1.8s infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(34,211,238,.7); }
  70% { box-shadow: 0 0 0 12px rgba(34,211,238,0); }
  100% { box-shadow: 0 0 0 0 rgba(34,211,238,0); }
}
.hero-title {
  margin: 24px 0 12px;
  font-size: clamp(40px, 6.5vw, 88px);
  line-height: 1.05;
  font-weight: 900;
  letter-spacing: .02em;
  color: #f8fafc;
}
.hero-title .hl {
  background: linear-gradient(135deg,#22d3ee,#a78bfa);
  -webkit-background-clip: text; background-clip: text;
  color: transparent;
}
.hero-title .hl-grad {
  background: linear-gradient(135deg,#f472b6 0%,#a78bfa 50%,#22d3ee 100%);
  -webkit-background-clip: text; background-clip: text;
  color: transparent;
}
.hero-sub {
  max-width: 580px;
  font-size: 17px; color: #94a3b8;
  margin-bottom: 32px;
}
.hero-sub b { color: #e2e8f0; font-weight: 600; }

.hero-meta {
  display: grid; grid-template-columns: repeat(3,1fr);
  gap: 14px; margin-bottom: 32px;
}
.meta-card {
  padding: 16px 14px;
  background: rgba(15,23,42,.55);
  border: 1px solid rgba(148,163,184,.15);
  border-radius: 12px;
  backdrop-filter: blur(8px);
  transition: transform .3s ease, border-color .3s ease;
}
.meta-card:hover { transform: translateY(-3px); border-color: rgba(34,211,238,.4); }
.meta-label {
  display: block;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px; color: #64748b; letter-spacing: .15em;
}
.meta-card strong {
  display: block;
  margin: 6px 0 6px;
  font-size: 18px;
  line-height: 1.3;
  color: #f1f5f9;
}
.meta-card small { font-size: 12px; color: #94a3b8; letter-spacing: .02em; }

.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 26px;
  border-radius: 999px;
  font-weight: 700; font-size: 14px;
  transition: transform .25s ease, box-shadow .25s ease;
}
.btn-primary {
  background: linear-gradient(135deg,#22d3ee,#a78bfa);
  color: #06121f;
  box-shadow: 0 12px 36px rgba(99,102,241,.35);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 16px 44px rgba(99,102,241,.55); }
.btn-ghost {
  background: rgba(148,163,184,.08);
  border: 1px solid rgba(148,163,184,.25);
  color: #e2e8f0;
}
.btn-ghost:hover { background: rgba(148,163,184,.14); border-color: rgba(34,211,238,.5); }

/* hero card */
.hero-card {
  position: relative;
  padding: 28px;
  background: linear-gradient(180deg,rgba(15,23,42,.85),rgba(15,23,42,.55));
  border: 1px solid rgba(148,163,184,.18);
  border-radius: 20px;
  backdrop-filter: blur(14px);
  box-shadow: 0 30px 80px rgba(0,0,0,.5);
  overflow: hidden;
}
.hero-card::before {
  content: '';
  position: absolute; inset: 0;
  background: conic-gradient(from 180deg at 80% 20%, transparent 0deg, rgba(34,211,238,.4) 60deg, transparent 120deg, rgba(167,139,250,.4) 240deg, transparent 300deg);
  opacity: .5; z-index: 0;
  animation: spin 14s linear infinite;
}
.hero-card > * { position: relative; z-index: 1; }
.hero-card-head {
  display: flex; align-items: center; gap: 8px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px; color: #94a3b8; letter-spacing: .12em;
  margin-bottom: 18px;
}
.dot { width: 8px; height: 8px; border-radius: 50%; background: #94a3b8; }
.dot.live { background: #f43f5e; animation: pulse 1.4s infinite; box-shadow: 0 0 0 0 rgba(244,63,94,.7); }

.countdown {
  display: grid; grid-template-columns: repeat(4,1fr);
  gap: 10px; margin-bottom: 22px;
}
.countdown div {
  padding: 14px 4px;
  background: rgba(6,7,13,.6);
  border: 1px solid rgba(148,163,184,.12);
  border-radius: 10px;
  text-align: center;
}
.countdown b {
  display: block;
  font-family: 'Orbitron', monospace;
  font-size: clamp(20px,2.6vw,30px);
  color: #f8fafc; font-weight: 900;
  background: linear-gradient(135deg,#22d3ee,#a78bfa);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.countdown i {
  display: block; margin-top: 4px;
  font-style: normal;
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px; color: #64748b; letter-spacing: .15em;
}

.hero-facts { list-style: none; padding: 0; margin: 0; }
.hero-facts li {
  display: flex; justify-content: space-between; align-items: center;
  padding: 10px 0;
  border-bottom: 1px dashed rgba(148,163,184,.18);
  font-size: 14px;
}
.hero-facts li:last-child { border-bottom: 0; }
.hero-facts span { color: #94a3b8; }
.hero-facts b {
  font-family: 'JetBrains Mono',monospace;
  color: #f1f5f9;
}

.scroll-hint {
  position: absolute; bottom: 28px; left: 50%;
  transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px; color: #64748b; letter-spacing: .25em;
  z-index: 2;
}
.scroll-arrow {
  width: 1px; height: 30px;
  background: linear-gradient(180deg,#22d3ee,transparent);
  position: relative;
}
.scroll-arrow::after {
  content: ''; position: absolute; left: -3px; bottom: 0;
  width: 7px; height: 7px;
  border-right: 2px solid #22d3ee; border-bottom: 2px solid #22d3ee;
  transform: rotate(45deg);
}

@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; gap: 36px; }
  .hero-meta { grid-template-columns: repeat(3,1fr); }
}
@media (max-width: 560px) {
  .hero { padding: 100px 18px 60px; }
  .hero-meta { grid-template-columns: 1fr 1fr; }
}

/* ============== 通用 Section ============== */
.section {
  position: relative;
  padding: 120px 36px;
  z-index: 1;
}
.container { max-width: 1280px; margin: 0 auto; }
.sec-head { text-align: center; margin-bottom: 56px; }
.eyebrow {
  display: inline-block;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px; letter-spacing: .3em;
  color: #22d3ee;
  padding: 6px 14px;
  background: rgba(34,211,238,.08);
  border: 1px solid rgba(34,211,238,.3);
  border-radius: 999px;
  margin-bottom: 20px;
}
.sec-head h2 {
  margin: 0 0 16px;
  font-size: clamp(30px, 4.4vw, 56px);
  font-weight: 900;
  background: linear-gradient(135deg,#f8fafc 0%,#cbd5e1 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  letter-spacing: .01em;
}
.sec-head p {
  max-width: 720px; margin: 0 auto;
  font-size: 16px; color: #94a3b8;
}

/* 玻璃拟态卡片 */
.glass-card {
  position: relative;
  background: linear-gradient(180deg,rgba(15,23,42,.6),rgba(15,23,42,.4));
  border: 1px solid rgba(148,163,184,.15);
  border-radius: 18px;
  backdrop-filter: blur(12px);
  overflow: hidden;
  transition: transform .35s ease, border-color .35s ease, box-shadow .35s ease;
}
.glass-card::before {
  content: '';
  position: absolute; inset: -1px;
  background: linear-gradient(135deg, transparent 40%, rgba(34,211,238,.4), transparent 80%);
  opacity: 0; transition: opacity .4s ease;
  border-radius: inherit;
  pointer-events: none;
}
.glass-card:hover { transform: translateY(-6px); border-color: rgba(34,211,238,.4); box-shadow: 0 20px 60px rgba(34,211,238,.15); }
.glass-card:hover::before { opacity: 1; }

/* ============== 数字名片 卡片网格 ============== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(4,1fr);
  gap: 22px;
  margin-bottom: 64px;
}
.flip-card { aspect-ratio: 4/5; cursor: pointer; }
.flip-inner {
  position: relative;
  width: 100%; height: 100%;
  transition: transform .8s cubic-bezier(.6,.05,.4,1);
  transform-style: preserve-3d;
}
.flip-card:hover .flip-inner,
.flip-card:focus .flip-inner { transform: rotateY(180deg); }
.flip-face, .flip-back {
  position: absolute; inset: 0;
  padding: 28px;
  display: flex; flex-direction: column; justify-content: center; align-items: center; text-align: center;
  backface-visibility: hidden;
  border-radius: inherit;
}
.flip-face {
  background:
    radial-gradient(circle at 30% 20%, var(--g1, #22d3ee) 0%, transparent 50%),
    radial-gradient(circle at 70% 80%, var(--g2, #6366f1) 0%, transparent 60%),
    linear-gradient(180deg,#0b1226,#0a0f1f);
}
.flip-face::before {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(circle at 50% 0%, rgba(255,255,255,.2), transparent 60%);
  border-radius: inherit;
  opacity: .6;
}
.face-icon { font-size: 48px; margin-bottom: 16px; filter: drop-shadow(0 4px 12px rgba(34,211,238,.5)); }
.flip-face h3 { margin: 0 0 6px; font-size: 22px; color: #f8fafc; }
.flip-face p { margin: 0; color: #cbd5e1; font-size: 13px; letter-spacing: .08em; }
.flip-back {
  transform: rotateY(180deg);
  background: rgba(8,9,26,.92);
  border: 1px solid rgba(34,211,238,.3);
}
.flip-back p { color: #cbd5e1; font-size: 14px; line-height: 1.7; }

@media (max-width: 980px) { .card-grid { grid-template-columns: repeat(2,1fr); } }
@media (max-width: 540px) { .card-grid { grid-template-columns: 1fr; } }

/* 数据条 */
.data-bar {
  display: grid; grid-template-columns: repeat(4,1fr);
  gap: 18px;
  padding: 28px;
  background: linear-gradient(135deg,rgba(34,211,238,.08),rgba(167,139,250,.08));
  border: 1px solid rgba(148,163,184,.15);
  border-radius: 18px;
  backdrop-filter: blur(10px);
}
.data-cell {
  text-align: center;
  padding: 14px;
  border-right: 1px dashed rgba(148,163,184,.2);
}
.data-cell:last-child { border-right: 0; }
.data-num {
  display: block;
  font-family: 'Orbitron', 'Noto Sans SC', monospace;
  font-size: clamp(22px, 2.8vw, 36px);
  font-weight: 900;
  white-space: nowrap;
  background: linear-gradient(135deg,#22d3ee,#a78bfa);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  line-height: 1.2;
}
.data-cap {
  display: block; margin-top: 8px;
  font-size: 13px; color: #94a3b8;
}
.data-cap i { color: #64748b; font-size: 11px; }

@media (max-width: 820px) {
  .data-bar { grid-template-columns: repeat(2,1fr); }
  .data-cell { border-right: 0; border-bottom: 1px dashed rgba(148,163,184,.2); padding-bottom: 18px; }
  .data-cell:nth-last-child(-n+2) { border-bottom: 0; }
}

/* ============== 科创硅谷 ============== */
.section-tech { position: relative; overflow: hidden; }
.tech-bg {
  position: absolute; inset: 0;
  background:
    radial-gradient(circle at 80% 20%, rgba(167,139,250,.18), transparent 50%),
    radial-gradient(circle at 20% 80%, rgba(34,211,238,.16), transparent 50%);
  z-index: -1;
}
.tech-tabs {
  display: flex; gap: 10px; flex-wrap: wrap; justify-content: center;
  margin-bottom: 30px;
}
.tech-tab {
  padding: 10px 20px;
  background: rgba(15,23,42,.6);
  border: 1px solid rgba(148,163,184,.18);
  border-radius: 999px;
  color: #cbd5e1;
  font-size: 14px;
  transition: all .3s ease;
}
.tech-tab:hover { border-color: rgba(34,211,238,.4); color: #f1f5f9; }
.tech-tab.active {
  background: linear-gradient(135deg,#22d3ee,#a78bfa);
  color: #06121f;
  border-color: transparent;
  box-shadow: 0 10px 30px rgba(99,102,241,.35);
}
.tech-panels {
  position: relative;
  padding: 32px;
  background: linear-gradient(180deg,rgba(15,23,42,.6),rgba(15,23,42,.3));
  border: 1px solid rgba(148,163,184,.15);
  border-radius: 18px;
  backdrop-filter: blur(8px);
  min-height: 220px;
  margin-bottom: 56px;
}
.tech-panel {
  display: none;
  animation: fadeUp .5s ease;
}
.tech-panel.active { display: block; }
.tech-panel h3 { margin: 0 0 12px; font-size: 22px; color: #f1f5f9; }
.tech-panel p { margin: 0 0 18px; color: #cbd5e1; }
.tech-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.tech-tags span {
  padding: 5px 12px;
  font-size: 12px;
  color: #67e8f9;
  background: rgba(34,211,238,.1);
  border: 1px solid rgba(34,211,238,.3);
  border-radius: 999px;
  transition: all .3s ease;
  cursor: default;
}
.tech-tags span:hover { background: rgba(34,211,238,.2); transform: translateY(-2px); }
@keyframes fadeUp { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

/* 雷达图 */
.radar-wrap { text-align: center; }
.radar { width: 100%; max-width: 460px; margin: 0 auto; }
.radar-shape {
  filter: drop-shadow(0 0 14px rgba(34,211,238,.5));
  animation: radarPulse 4s ease-in-out infinite;
}
@keyframes radarPulse {
  0%,100% { transform: scale(1); }
  50% { transform: scale(1.04); }
}
.radar-labels text { fill: #cbd5e1; }

.radar-cap {
  margin-top: 8px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px; color: #64748b; letter-spacing: .15em;
}

/* ============== 文脉古城 ============== */
.timeline {
  position: relative;
  padding: 80px 0 40px;
  display: grid;
  grid-template-columns: repeat(5,1fr);
  gap: 24px;
}
.timeline::before {
  content: '';
  position: absolute;
  top: 182px; left: 5%; right: 5%;
  height: 2px;
  background: linear-gradient(90deg,transparent,#22d3ee,#a78bfa,#f472b6,transparent);
}
.t-item {
  position: relative;
  text-align: center;
  padding: 0 8px;
}
.t-item::before {
  content: '';
  position: absolute; left: 50%; top: 102px;
  transform: translate(-50%,-50%);
  width: 14px; height: 14px;
  border-radius: 50%;
  background: linear-gradient(135deg,#22d3ee,#a78bfa);
  box-shadow: 0 0 0 4px rgba(34,211,238,.2), 0 0 18px rgba(34,211,238,.6);
  z-index: 2;
}
.t-year {
  display: block;
  font-family: 'Orbitron', monospace;
  font-size: 18px; font-weight: 700;
  color: #f8fafc;
  margin-bottom: 60px;   /* 年份到圆点之间留 58px 缓冲，节奏更紧凑 */
}
.t-item p {
  font-size: 13px;
  color: #94a3b8;
  line-height: 1.6;
  margin: 92px 0 0;       /* 圆点下沿 ≈ 109，加 16 缓冲 → 125；此处 92 + 21.6 + 36 = 149.6 保险大于 109 */
}

@media (max-width: 820px) {
  .timeline { grid-template-columns: 1fr 1fr; gap: 36px; padding: 28px 0; }
  .timeline::before { display: none; }
  .t-item::before { position: relative; display: inline-block; transform: none; margin: 0 0 10px; }
  .t-year { margin-bottom: 8px; }
}

/* ============== 亚太共联 ============== */
.section-connect { position: relative; overflow: hidden; }
.connect-bg {
  position: absolute; inset: 0;
  background:
    radial-gradient(circle at 50% 50%, rgba(34,211,238,.16), transparent 60%),
    radial-gradient(circle at 80% 0%, rgba(167,139,250,.18), transparent 50%);
  z-index: -1;
}

.connect-wrap {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 24px;
  margin-bottom: 60px;
}
.connect-svg {
  width: 100%;
  aspect-ratio: 1787 / 1060;
  background: transparent;
  border: 1px solid rgba(148,163,184,.15);
  border-radius: 18px;
  backdrop-filter: blur(8px);
  overflow: hidden;
}
.connect-svg .map-bg {
  /* 底图已预处理好：国旗/标签几乎隐形，国境线保留 */
  border-radius: 18px;
  opacity: 1;
}
.world path { transition: fill .3s ease; }
.world:hover path { fill: rgba(148,163,184,.28); }

.eco-nodes circle {
  cursor: pointer;
  transition: r .2s ease, fill-opacity .2s ease;
}
.eco-nodes circle:hover {
  r: 20;
  fill-opacity: 0.4;
  filter: drop-shadow(0 0 14px rgba(34,211,238,.9));
}
.eco-nodes circle[data-code="CHN"]:hover {
  filter: drop-shadow(0 0 14px rgba(255,26,26,.95));
}
.eco-nodes text {
  fill: #67e8f9; font-size: 14px; font-family: 'JetBrains Mono';
  text-anchor: middle;
  pointer-events: none;
  text-shadow: 0 0 4px rgba(6,7,13,.95);
  font-weight: 700;
  letter-spacing: .04em;
}
.eco-links line { stroke: rgba(34,211,238,.35); stroke-width: 2; stroke-dasharray: 6 8; }

.eco-panel {
  padding: 32px 26px;
  background: linear-gradient(180deg,rgba(15,23,42,.7),rgba(15,23,42,.4));
  border: 1px solid rgba(148,163,184,.18);
  border-radius: 18px;
  backdrop-filter: blur(10px);
  min-height: 380px;
}
.eco-empty { text-align: center; color: #94a3b8; padding: 80px 0; }
.eco-empty .big { font-size: 56px; margin-bottom: 12px; }
.eco-card h3 { margin: 0 0 6px; font-size: 22px; color: #f8fafc; }
.eco-card .region {
  display: inline-block;
  padding: 3px 10px;
  font-size: 11px; letter-spacing: .15em;
  background: rgba(34,211,238,.12);
  border: 1px solid rgba(34,211,238,.3);
  border-radius: 999px;
  color: #67e8f9;
  margin-bottom: 18px;
}
.eco-stats {
  display: grid; grid-template-columns: 1fr 1fr; gap: 12px;
  margin-bottom: 18px;
}
.eco-stats > div {
  padding: 12px;
  background: rgba(6,7,13,.5);
  border: 1px solid rgba(148,163,184,.12);
  border-radius: 10px;
}
.eco-stats i { font-style: normal; font-size: 11px; color: #64748b; letter-spacing: .12em; }
.eco-stats b { display: block; margin-top: 4px; color: #f1f5f9; font-family: 'JetBrains Mono',monospace; }
.eco-card p { color: #cbd5e1; font-size: 14px; line-height: 1.7; }

@media (max-width: 980px) {
  .connect-wrap { grid-template-columns: 1fr; }
}

/* 价值观 */
.pillars {
  display: grid; grid-template-columns: repeat(4,1fr); gap: 16px;
}
.pillar {
  position: relative;
  padding: 24px;
  background: rgba(15,23,42,.6);
  border: 1px solid rgba(148,163,184,.18);
  border-radius: 14px;
  backdrop-filter: blur(8px);
  transition: transform .3s ease, border-color .3s ease;
  overflow: hidden;
}
.pillar::before {
  content: ''; position: absolute; left: 0; top: 0; bottom: 0;
  width: 3px;
  background: linear-gradient(180deg,#22d3ee,#a78bfa,#f472b6);
}
.pillar:hover { transform: translateY(-4px); border-color: rgba(34,211,238,.4); }
.pillar b {
  font-family: 'Orbitron', monospace;
  font-size: 22px; font-weight: 900;
  background: linear-gradient(135deg,#22d3ee,#a78bfa);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  letter-spacing: .04em;
}
.pillar span {
  display: block; margin: 8px 0 12px;
  font-size: 13px; color: #94a3b8; letter-spacing: .1em;
}
.pillar p { margin: 0; font-size: 13px; color: #cbd5e1; line-height: 1.7; }

@media (max-width: 820px) { .pillars { grid-template-columns: repeat(2,1fr); } }
@media (max-width: 480px) { .pillars { grid-template-columns: 1fr; } }

/* ============== 青年之声 ============== */
.voice-grid {
  display: grid; grid-template-columns: repeat(3,1fr); gap: 22px;
  margin-bottom: 48px;
}
.voice-card {
  position: relative;
  padding: 30px 26px 22px;
  background: linear-gradient(180deg,rgba(15,23,42,.6),rgba(15,23,42,.3));
  border: 1px solid rgba(148,163,184,.15);
  border-radius: 16px;
  backdrop-filter: blur(8px);
  transition: transform .3s ease, border-color .3s ease;
}
.voice-card:hover { transform: translateY(-4px); border-color: rgba(167,139,250,.4); }
.voice-card .quote {
  position: absolute; top: -10px; left: 22px;
  font-family: 'Noto Sans SC'; font-size: 64px;
  background: linear-gradient(135deg,#22d3ee,#a78bfa);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  font-weight: 900; line-height: 1;
}
.voice-card p { margin: 8px 0 22px; font-size: 15px; color: #e2e8f0; line-height: 1.8; }
.voice-card footer { border-top: 1px dashed rgba(148,163,184,.2); padding-top: 12px; font-size: 13px; }
.voice-card b { color: #f1f5f9; }
.voice-card i { color: #94a3b8; font-style: normal; }

@media (max-width: 820px) { .voice-grid { grid-template-columns: 1fr; } }

/* 留言板 */
.board {
  padding: 32px;
  background: linear-gradient(180deg,rgba(15,23,42,.7),rgba(15,23,42,.4));
  border: 1px solid rgba(148,163,184,.18);
  border-radius: 18px;
  backdrop-filter: blur(8px);
}
.board h3 { margin: 0 0 16px; color: #f1f5f9; }
.board-row {
  display: flex; gap: 10px; margin-bottom: 18px;
}
.board-row input {
  flex: 1;
  padding: 12px 16px;
  background: rgba(6,7,13,.6);
  border: 1px solid rgba(148,163,184,.25);
  border-radius: 10px;
  color: #f1f5f9;
  font-family: inherit;
  font-size: 14px;
  outline: none;
  transition: border-color .3s ease;
}
.board-row input:focus { border-color: rgba(34,211,238,.6); }
.board-row button {
  padding: 12px 22px;
  background: linear-gradient(135deg,#22d3ee,#a78bfa);
  color: #06121f;
  border: 0;
  border-radius: 10px;
  font-weight: 700;
  font-size: 14px;
  transition: transform .25s ease;
}
.board-row button:hover { transform: translateY(-1px); }

.board-tags { display: flex; flex-wrap: wrap; gap: 10px; }
.board-tags span {
  padding: 6px 14px;
  font-size: 13px;
  color: #e2e8f0;
  background: rgba(34,211,238,.1);
  border: 1px solid rgba(34,211,238,.3);
  border-radius: 999px;
  cursor: pointer;
  transition: all .3s ease;
  animation: tagIn .5s ease;
}
.board-tags span:hover {
  background: rgba(34,211,238,.2);
  transform: translateY(-2px) scale(1.05);
}
@keyframes tagIn { from { opacity:0; transform: translateY(8px); } to { opacity:1; transform: translateY(0); } }
.board-tip {
  margin: 14px 0 0;
  font-size: 12px; color: #64748b;
}

/* ============== 页脚 ============== */
.footer {
  position: relative;
  padding: 60px 36px 24px;
  background: linear-gradient(180deg,transparent,rgba(0,0,0,.4));
  border-top: 1px solid rgba(148,163,184,.12);
}
.footer-inner {
  max-width: 1280px; margin: 0 auto;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 36px;
  margin-bottom: 32px;
}
.footer h4 {
  margin: 0 0 10px;
  font-size: 20px;
  background: linear-gradient(135deg,#22d3ee,#a78bfa);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.footer h5 { margin: 0 0 14px; color: #f1f5f9; font-size: 15px; }
.footer p { margin: 6px 0; color: #94a3b8; font-size: 14px; }
.footer .muted { color: #64748b; font-size: 12px; }
.footer ul { list-style: none; padding: 0; margin: 0; }
.footer li {
  padding: 6px 0;
  font-size: 13px; color: #94a3b8;
  border-bottom: 1px dashed rgba(148,163,184,.12);
}
.footer li:last-child { border-bottom: 0; }
.footer-bottom {
  max-width: 1280px; margin: 0 auto;
  display: flex; justify-content: space-between;
  padding-top: 20px;
  border-top: 1px solid rgba(148,163,184,.12);
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px; color: #64748b; letter-spacing: .05em;
}
@media (max-width: 820px) {
  .footer-inner { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 10px; text-align: center; }
}

/* ============== 滚动入场 ============== */
.reveal {
  opacity: 0; transform: translateY(28px);
  transition: opacity .9s ease, transform .9s ease;
}
.reveal.in { opacity: 1; transform: translateY(0); }

/* ============== 选区配色 ============== */
::selection { background: rgba(34,211,238,.35); color: #f8fafc; }

/* ============== a11y: 跳过链接 ============== */
.skip-link {
  position: absolute; left: -9999px; top: 8px;
  padding: 10px 16px;
  background: linear-gradient(135deg,#22d3ee,#a78bfa);
  color: #06121f; font-weight: 700; font-size: 13px;
  border-radius: 8px; z-index: 10000;
}
.skip-link:focus { left: 16px; outline: 2px solid #fff; }

/* ============== 无障碍 / 减少动效偏好 ============== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  .reveal { opacity: 1; transform: none; }
}