/* OriEra 官网 · 设计语言参考 VAST/Tripo（黑底玻璃卡 + 霓虹 CTA），品牌色用 OriEra 余烬橙 #ff6b2b */

:root {
  --bg: #060709;
  --bg-2: #0b0d10;
  --card: #101319;
  --card-2: #141821;
  --line: rgba(255, 255, 255, 0.1);
  --line-2: rgba(255, 255, 255, 0.18);
  --text: #f2f0ec;
  --muted: rgba(242, 240, 236, 0.62);
  --faint: rgba(242, 240, 236, 0.4);
  --ember: #ff6b2b;
  --ember-hi: #ffa06b;
  --ember-deep: #e2551a;
  --teal: #3ee6ff;
  --radius: 16px;
  --radius-lg: 24px;
  --shell: 1180px;
  --font: "PingFang SC", "HarmonyOS Sans SC", "Source Han Sans SC", "Noto Sans SC", "Microsoft YaHei", "Segoe UI", system-ui, sans-serif;
  --mono: "Cascadia Code", "JetBrains Mono", Consolas, ui-monospace, monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img, video { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
::selection { background: rgba(255, 107, 43, 0.35); }

.shell { width: 100%; max-width: var(--shell); margin-inline: auto; padding-inline: 24px; }
.shell-narrow { max-width: 860px; }

/* ===== 公告条 ===== */
.announce {
  position: relative; z-index: 60;
  background: linear-gradient(90deg, rgba(255, 107, 43, 0.16), rgba(255, 107, 43, 0.06) 45%, rgba(62, 230, 255, 0.08));
  border-bottom: 1px solid rgba(255, 107, 43, 0.25);
  font-size: 13px;
}
.announce a {
  display: flex; align-items: center; justify-content: center; gap: 10px;
  padding: 9px 16px; flex-wrap: wrap; text-align: center;
  color: var(--text);
}
.announce strong { color: var(--ember-hi); }
.announce-tag {
  font-size: 11px; letter-spacing: 0.14em; padding: 2px 8px; border-radius: 999px;
  border: 1px solid rgba(255, 107, 43, 0.45); color: var(--ember-hi); flex: none;
}
.announce-arrow { transition: transform 0.2s; }
.announce a:hover .announce-arrow { transform: translateX(4px); }

/* ===== 导航 ===== */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(6, 7, 9, 0.72);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s, background 0.25s;
}
.nav.is-scrolled { border-bottom-color: var(--line); background: rgba(6, 7, 9, 0.86); }
.nav-inner {
  max-width: var(--shell); margin-inline: auto; padding: 0 24px;
  height: 64px; display: flex; align-items: center; gap: 28px;
}
.brand { display: inline-flex; align-items: center; gap: 10px; flex: none; }
.brand img { width: 30px; height: auto; }
.brand-name { font-weight: 700; font-size: 17px; letter-spacing: 0.02em; }
.brand-sub { font-size: 12px; color: var(--muted); margin-left: -2px; padding-left: 10px; border-left: 1px solid var(--line-2); }
.nav-links { display: flex; gap: 26px; margin-inline: auto; }
.nav-links a { font-size: 14px; color: var(--muted); transition: color 0.2s; padding-block: 4px; }
.nav-links a:hover { color: var(--text); }
.nav-actions { display: flex; align-items: center; gap: 12px; flex: none; }
.gh-pill {
  display: inline-flex; align-items: center; gap: 7px;
  height: 34px; padding: 0 12px; border-radius: 999px;
  border: 1px solid var(--line-2); font-size: 13px; color: var(--muted);
  transition: border-color 0.2s, color 0.2s;
}
.gh-pill:hover { border-color: var(--ember); color: var(--text); }
.gh-count { font-variant-numeric: tabular-nums; }
.nav-toggle { display: none; width: 40px; height: 40px; border-radius: 10px; border: 1px solid var(--line); position: relative; }
.nav-toggle span { position: absolute; left: 11px; right: 11px; height: 1.6px; background: var(--text); transition: 0.25s; }
.nav-toggle span:nth-child(1) { top: 13px; }
.nav-toggle span:nth-child(2) { top: 19px; }
.nav-toggle span:nth-child(3) { top: 25px; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
.nav-drawer {
  display: none; position: sticky; top: 64px; z-index: 49;
  background: rgba(6, 7, 9, 0.97); border-bottom: 1px solid var(--line);
  padding: 10px 24px 18px;
}
.nav-drawer.open { display: grid; }
.nav-drawer a { padding: 11px 4px; border-bottom: 1px solid rgba(255, 255, 255, 0.05); font-size: 15px; }
.nav-drawer .drawer-cta { border-bottom: 0; }

/* ===== 按钮 ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 46px; padding: 0 22px; border-radius: 999px;
  font-size: 15px; font-weight: 600; white-space: nowrap;
  transition: transform 0.15s, box-shadow 0.2s, background 0.2s, border-color 0.2s, color 0.2s;
}
.btn:active { transform: scale(0.98); }
.btn-primary {
  background: var(--ember); color: #16100b;
  box-shadow: 0 0 0 rgba(255, 107, 43, 0);
}
.btn-primary:hover { background: var(--ember-hi); box-shadow: 0 0 26px rgba(255, 107, 43, 0.45); }
.btn-ghost { border: 1px solid var(--line-2); color: var(--text); }
.btn-ghost:hover { border-color: rgba(255, 107, 43, 0.6); background: rgba(255, 107, 43, 0.08); }
.btn-sm { height: 36px; padding: 0 16px; font-size: 13.5px; }

/* ===== 通用 section ===== */
.section { padding: 88px 0; position: relative; }
.sec-head { text-align: center; max-width: 720px; margin: 0 auto 52px; }
.eyebrow {
  font-size: 12px; letter-spacing: 0.3em; color: var(--ember-hi);
  text-transform: uppercase; margin-bottom: 14px; font-weight: 600;
}
.sec-head h2 { font-size: clamp(26px, 4vw, 40px); line-height: 1.25; letter-spacing: 0.01em; }
.sec-lede { color: var(--muted); margin-top: 14px; font-size: 15.5px; }

.card {
  background: linear-gradient(180deg, var(--card-2), var(--card));
  border: 1px solid var(--line); border-radius: var(--radius-lg);
  transition: border-color 0.25s, transform 0.25s, box-shadow 0.25s;
}

/* ===== Hero ===== */
.hero { position: relative; padding: 72px 0 40px; overflow: clip; }
.hero-glow {
  position: absolute; inset: -40% -20% auto; height: 130%;
  background:
    radial-gradient(46% 42% at 18% 26%, rgba(255, 107, 43, 0.16), transparent 65%),
    radial-gradient(42% 40% at 82% 18%, rgba(62, 230, 255, 0.08), transparent 60%),
    radial-gradient(50% 46% at 55% 90%, rgba(255, 107, 43, 0.07), transparent 70%);
  pointer-events: none;
}
.hero-grid-bg {
  position: absolute; inset: 0; pointer-events: none; opacity: 0.5;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(75% 68% at 50% 34%, #000 0%, transparent 100%);
  mask-image: radial-gradient(75% 68% at 50% 34%, #000 0%, transparent 100%);
}
.hero-inner {
  position: relative; display: grid; grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
  gap: 48px; align-items: center;
}
.hero-copy h1 {
  font-size: clamp(36px, 5.4vw, 64px); line-height: 1.14; letter-spacing: 0.005em;
  margin: 10px 0 22px; font-weight: 700;
}
.hero-copy h1 em {
  font-style: normal;
  background: linear-gradient(92deg, var(--ember) 15%, #ffb37a 95%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-lede { color: var(--muted); font-size: 16.5px; max-width: 34em; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 30px; }
.hero-stats { display: flex; flex-wrap: wrap; gap: 10px 38px; list-style: none; margin-top: 38px; }
.hero-stats li { display: grid; gap: 2px; }
.hero-stats strong { font-size: 26px; font-weight: 700; font-variant-numeric: tabular-nums; letter-spacing: 0.01em; }
.hero-stats span { font-size: 12.5px; color: var(--faint); }
.hero-note { margin-top: 14px; font-size: 12.5px; color: var(--faint); }
.hero-note a { color: var(--muted); text-decoration: underline; text-underline-offset: 3px; }
.hero-note a:hover { color: var(--text); }

.hero-media { position: relative; }
.hero-frame {
  position: relative; border-radius: var(--radius-lg); overflow: hidden;
  border: 1px solid var(--line-2);
  background: var(--bg-2);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.55), 0 0 60px rgba(255, 107, 43, 0.08);
  transform: perspective(1400px) rotateY(-4deg) rotateX(1.5deg);
}
.hero-frame::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.09), transparent 32%);
}
.hero-frame video { width: 100%; aspect-ratio: 640 / 387; object-fit: cover; transform: scale(1.32); transform-origin: 52% 78%; }
.hero-chip {
  position: absolute; bottom: 14px; left: 14px;
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 12px; border-radius: 999px; font-size: 12.5px;
  background: rgba(6, 7, 9, 0.72); border: 1px solid var(--line-2);
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
}
.hero-chip.chip-right { left: auto; right: 14px; color: var(--muted); }
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--ember); animation: pulse 1.8s ease-in-out infinite; }
@keyframes pulse { 0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(255, 107, 43, 0.5); } 50% { opacity: 0.6; box-shadow: 0 0 0 6px rgba(255, 107, 43, 0); } }
.hero-float {
  position: absolute; padding: 10px 16px; border-radius: 14px;
  background: rgba(16, 19, 25, 0.85); border: 1px solid var(--line-2);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  font-size: 13.5px; font-weight: 600;
  box-shadow: 0 18px 44px rgba(0, 0, 0, 0.45);
}
.hero-float span { display: block; font-size: 11.5px; font-weight: 400; color: var(--faint); }
.float-a { top: -18px; right: 8%; transform: rotate(2deg); animation: bob 5.5s ease-in-out infinite; }
.float-b { bottom: -20px; left: -4%; transform: rotate(-2deg); animation: bob 6.5s ease-in-out 1.2s infinite; }
@keyframes bob { 0%, 100% { translate: 0 0; } 50% { translate: 0 -9px; } }

.hero-tail { position: relative; margin-top: 84px; }
.eco-label { text-align: center; font-size: 12px; letter-spacing: 0.24em; color: var(--faint); margin-bottom: 20px; }
.eco-marquee {
  overflow: hidden; -webkit-mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
}
.eco-track { display: flex; gap: 52px; width: max-content; animation: scroll 34s linear infinite; }
.eco-track span { font-size: 15px; font-weight: 600; color: var(--faint); letter-spacing: 0.06em; white-space: nowrap; }
@keyframes scroll { to { transform: translateX(-50%); } }
.eco-marquee:hover .eco-track { animation-play-state: paused; }

/* ===== 双产品卡 ===== */
.duo { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.duo-card { padding: 34px 32px; display: flex; flex-direction: column; gap: 18px; }
.duo-card:hover { border-color: rgba(255, 107, 43, 0.45); transform: translateY(-4px); box-shadow: 0 24px 60px rgba(0, 0, 0, 0.45); }
.duo-head { display: flex; align-items: center; gap: 16px; }
.duo-ico {
  width: 48px; height: 48px; border-radius: 14px; flex: none;
  display: grid; place-items: center; color: var(--ember-hi);
  background: rgba(255, 107, 43, 0.1); border: 1px solid rgba(255, 107, 43, 0.3);
}
.duo-card h3 { font-size: 21px; }
.duo-sub { font-size: 13px; color: var(--faint); margin-top: 2px; }
.duo-desc { color: var(--muted); font-size: 15px; }
.tags { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; }
.tags li {
  font-size: 12.5px; color: var(--muted); padding: 5px 12px; border-radius: 999px;
  border: 1px solid var(--line); background: rgba(255, 255, 255, 0.03);
}
.duo-foot { display: flex; gap: 12px; margin-top: auto; flex-wrap: wrap; }

/* ===== 五步流程 ===== */
.flow-tabs { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin-bottom: 26px; }
.flow-tab {
  padding: 10px 18px; border-radius: 999px; font-size: 14px; color: var(--muted);
  border: 1px solid var(--line); transition: all 0.2s;
}
.flow-tab:hover { color: var(--text); border-color: var(--line-2); }
.flow-tab.is-active { color: #16100b; background: var(--ember); border-color: var(--ember); font-weight: 600; box-shadow: 0 0 18px rgba(255, 107, 43, 0.35); }
.flow-panel {
  border-radius: var(--radius-lg); overflow: hidden;
  border: 1px solid var(--line-2); background: var(--bg-2);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.5);
}
.flow-panel img { width: 100%; height: auto; }

/* ===== 能力矩阵 ===== */
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.feat { padding: 28px 24px; display: grid; gap: 12px; align-content: start; }
.feat:hover { border-color: rgba(255, 107, 43, 0.4); transform: translateY(-4px); }
.feat-ico { font-size: 26px; line-height: 1; }
.feat h3 { font-size: 17px; }
.feat p { font-size: 14px; color: var(--muted); }

/* ===== 演示厅 ===== */
.gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.shot {
  position: relative; display: block; border-radius: var(--radius); overflow: hidden;
  border: 1px solid var(--line); background: var(--bg-2);
  transition: border-color 0.25s, transform 0.25s, box-shadow 0.25s;
}
.shot:hover { border-color: rgba(255, 107, 43, 0.5); transform: translateY(-4px); box-shadow: 0 22px 56px rgba(0, 0, 0, 0.5); }
.shot img { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; transition: transform 0.5s; }
.shot:hover img { transform: scale(1.035); }
.shot-tag {
  position: absolute; top: 12px; left: 12px; font-size: 11.5px;
  padding: 4px 10px; border-radius: 999px;
  background: rgba(6, 7, 9, 0.7); border: 1px solid rgba(62, 230, 255, 0.4); color: var(--teal);
  backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
}
.shot-cap {
  position: absolute; inset: auto 0 0; padding: 30px 16px 14px;
  background: linear-gradient(180deg, transparent, rgba(4, 5, 7, 0.92) 62%);
  font-size: 13px; color: var(--muted); display: grid; gap: 1px;
}
.shot-cap strong { font-size: 15px; color: var(--text); }
.filmstrip { margin-top: 40px; }
.filmstrip figure { max-width: 880px; margin: 0 auto; }
.filmstrip video { width: 100%; border-radius: var(--radius-lg); border: 1px solid var(--line-2); background: #000; }
.filmstrip figcaption { text-align: center; margin-top: 12px; font-size: 13px; color: var(--faint); }

/* ===== 八大赛道 ===== */
.tracks-grid { grid-template-columns: repeat(4, 1fr); gap: 14px; }
.track { display: grid; grid-template-columns: auto 1fr; grid-template-rows: auto auto; column-gap: 12px; align-items: center; padding: 20px 18px; }
.track:hover { border-color: rgba(255, 107, 43, 0.45); transform: translateY(-3px); }
.t-ico { grid-row: span 2; font-size: 22px; }
.track strong { font-size: 15.5px; }
.track span:last-child { font-size: 12.5px; color: var(--faint); }

/* ===== 开发者 ===== */
.dev-split { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 20px; align-items: stretch; }
.terminal {
  border-radius: var(--radius); overflow: hidden;
  border: 1px solid var(--line-2); background: #07080b;
  display: flex; flex-direction: column;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
}
.term-head { display: flex; align-items: center; gap: 7px; padding: 12px 16px; border-bottom: 1px solid var(--line); background: rgba(255, 255, 255, 0.03); }
.term-dot { width: 10px; height: 10px; border-radius: 50%; background: rgba(255, 255, 255, 0.14); }
.term-dot:first-child { background: rgba(255, 107, 43, 0.6); }
.term-title { margin-left: 8px; font-size: 12px; color: var(--faint); font-family: var(--mono); }
.term-copy { margin-left: auto; font-size: 12px; color: var(--muted); border: 1px solid var(--line); border-radius: 8px; padding: 3px 10px; transition: 0.2s; }
.term-copy:hover { color: var(--text); border-color: var(--line-2); }
.terminal pre { padding: 20px 20px 24px; overflow-x: auto; flex: 1; }
.terminal code { font-family: var(--mono); font-size: 13.5px; line-height: 1.9; color: #d8e2ee; white-space: pre; }
.doc-links { display: grid; gap: 12px; }
.doc-link { display: grid; gap: 3px; padding: 18px 20px; }
.doc-link:hover { border-color: rgba(255, 107, 43, 0.45); transform: translateX(4px); }
.doc-link strong { font-size: 15px; }
.doc-link span { font-size: 12.5px; color: var(--faint); }

/* ===== FAQ ===== */
.faq-list { display: grid; gap: 12px; }
.faq { border: 1px solid var(--line); border-radius: var(--radius); background: var(--card); padding: 0; transition: border-color 0.25s; }
.faq[open] { border-color: rgba(255, 107, 43, 0.4); }
.faq summary {
  list-style: none; cursor: pointer; padding: 18px 22px;
  font-size: 15.5px; font-weight: 600; display: flex; align-items: center; justify-content: space-between; gap: 16px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-size: 20px; color: var(--ember-hi); font-weight: 400; transition: transform 0.25s; flex: none; }
.faq[open] summary::after { transform: rotate(45deg); }
.faq p { padding: 0 22px 20px; color: var(--muted); font-size: 14.5px; }
.faq a { color: var(--teal); text-decoration: underline; text-underline-offset: 3px; }

/* ===== 尾部 CTA ===== */
.final-cta { padding-bottom: 110px; }
.cta-frame {
  position: relative; text-align: center;
  border: 1px solid rgba(255, 107, 43, 0.28); border-radius: 32px;
  padding: 64px 40px 56px;
  background:
    radial-gradient(60% 70% at 50% 0%, rgba(255, 107, 43, 0.12), transparent 70%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.02), transparent);
  overflow: hidden;
}
.cta-frame h2 { font-size: clamp(28px, 4.4vw, 44px); margin-bottom: 12px; }
.cta-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; max-width: 880px; margin: 40px auto 0; text-align: left; }
.cta-card { padding: 26px 26px 28px; display: grid; gap: 12px; justify-items: start; }
.cta-card h3 { font-size: 18px; display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.cta-card p { font-size: 14px; color: var(--muted); }
.cta-btns { display: flex; gap: 12px; flex-wrap: wrap; }
.pill { font-size: 11.5px; font-weight: 500; color: var(--ember-hi); border: 1px solid rgba(255, 107, 43, 0.4); border-radius: 999px; padding: 2px 10px; }

/* ===== 页脚 ===== */
.footer { border-top: 1px solid var(--line); background: #050608; padding: 60px 0 34px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr repeat(4, 1fr); gap: 36px; }
.footer-brand p { color: var(--muted); font-size: 14px; margin-top: 14px; }
.footer-mail { margin-top: 10px; }
.footer-mail a { color: var(--ember-hi); }
.footer-col { display: grid; gap: 10px; align-content: start; }
.footer-col h4 { font-size: 13px; letter-spacing: 0.12em; color: var(--faint); margin-bottom: 6px; font-weight: 600; }
.footer-col a { font-size: 14px; color: var(--muted); transition: color 0.2s; }
.footer-col a:hover { color: var(--text); }
.footer-legal {
  display: flex; justify-content: space-between; gap: 14px; flex-wrap: wrap;
  margin-top: 48px; padding-top: 22px; border-top: 1px solid rgba(255, 255, 255, 0.06);
  font-size: 12.5px; color: var(--faint);
}
.icp a { color: var(--faint); }
.icp a:hover { color: var(--muted); }

/* reveal 动效 */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1); }
.reveal.in { opacity: 1; transform: none; }

/* ===== 公司介绍版组件 ===== */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }

/* 开源证据带 */
.oss {
  margin-top: 56px; padding: 36px 32px 32px; border-radius: 28px;
  border: 1px solid var(--line); background: linear-gradient(180deg, rgba(255, 255, 255, 0.025), transparent);
}
.oss-head { display: grid; grid-template-columns: 1fr auto; gap: 8px 40px; align-items: end; margin-bottom: 26px; }
.oss-head h3 { font-size: 20px; }
.oss-head p { grid-column: 1; color: var(--muted); font-size: 14.5px; }
.oss-stats { grid-column: 2; grid-row: 1 / span 2; display: flex; gap: 30px; list-style: none; }
.oss-stats li { display: grid; gap: 1px; text-align: right; }
.oss-stats strong { font-size: 24px; font-variant-numeric: tabular-nums; color: var(--ember-hi); }
.oss-stats span { font-size: 12px; color: var(--faint); }
.gallery-3 { grid-template-columns: repeat(3, 1fr); }
.oss-foot { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 22px; }

/* 蓝图状态 pill */
.bp-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; flex-wrap: wrap; }
.pill-open { color: #5ee6a8; border-color: rgba(94, 230, 168, 0.45); background: rgba(94, 230, 168, 0.08); }
.pill-building { color: var(--ember-hi); border-color: rgba(255, 107, 43, 0.45); background: rgba(255, 107, 43, 0.08); }
.pill-plan { color: var(--muted); border-color: var(--line-2); background: rgba(255, 255, 255, 0.03); }

/* 路线图时间线 */
.timeline { list-style: none; position: relative; display: grid; gap: 18px; padding-left: 34px; }
.timeline::before {
  content: ""; position: absolute; left: 9px; top: 8px; bottom: 8px; width: 2px;
  background: linear-gradient(180deg, var(--ember), rgba(255, 107, 43, 0.25) 45%, rgba(255, 255, 255, 0.08));
}
.tl-item {
  position: relative; padding: 24px 26px; border-radius: var(--radius-lg);
  border: 1px solid var(--line); background: linear-gradient(180deg, var(--card-2), var(--card));
}
.tl-item::before {
  content: ""; position: absolute; left: -31px; top: 30px; width: 14px; height: 14px; border-radius: 50%;
  background: var(--bg); border: 2px solid var(--line-2);
}
.tl-now { border-color: rgba(255, 107, 43, 0.4); }
.tl-now::before { border-color: var(--ember); background: var(--ember); box-shadow: 0 0 14px rgba(255, 107, 43, 0.6); }
.tl-meta { display: flex; align-items: center; gap: 12px; margin-bottom: 8px; flex-wrap: wrap; }
.tl-stage { font-size: 12px; letter-spacing: 0.18em; color: var(--faint); }
.tl-item h3 { font-size: 18px; margin-bottom: 6px; }
.tl-item p { font-size: 14.5px; color: var(--muted); }

/* 团队名片 */
.person { padding: 30px 28px; display: grid; gap: 10px; align-content: start; }
.avatar {
  width: 56px; height: 56px; border-radius: 50%; display: grid; place-items: center;
  font-size: 22px; font-weight: 700; color: #16100b;
  background: linear-gradient(140deg, var(--ember-hi), var(--ember));
  box-shadow: 0 0 22px rgba(255, 107, 43, 0.3);
}
.person h3 { font-size: 19px; display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; margin-top: 4px; }
.role { font-size: 12.5px; font-weight: 500; color: var(--ember-hi); }
.person p { font-size: 14px; color: var(--muted); }

/* 生态卡 / 联系卡 */
.eco-card, .contact-card { color: inherit; }
.eco-card:hover, .contact-card:hover { border-color: rgba(255, 107, 43, 0.45); transform: translateY(-4px); }
div.contact-card:hover { transform: none; border-color: var(--line); }
.eco-go { font-size: 13px; color: var(--ember-hi); margin-top: 4px; }

/* 公众号二维码卡 */
.qr-card {
  margin-top: 22px; display: flex; align-items: center; gap: 26px;
  padding: 22px 26px; border-radius: var(--radius-lg);
  border: 1px solid var(--line); background: var(--card);
}
.qr-card img { width: 120px; height: 120px; border-radius: 12px; background: #fff; padding: 6px; flex: none; }
.qr-card h3 { font-size: 17px; margin-bottom: 6px; }
.qr-card p { font-size: 14px; color: var(--muted); }

/* 愿景引言 */
.vision {
  font-size: clamp(20px, 2.8vw, 30px); line-height: 1.75; font-weight: 600;
  max-width: 860px; margin: 8px auto 34px; letter-spacing: 0.01em;
}
.vision em { font-style: normal; color: var(--ember-hi); }
.cta-btns.center { justify-content: center; }

/* ===== 响应式 ===== */
@media (max-width: 1020px) {
  .nav-links { display: none; }
  .nav-toggle { display: block; }
  .hero-inner { grid-template-columns: 1fr; gap: 44px; }
  .hero-media { max-width: 640px; margin-inline: auto; }
  .hero-frame { transform: none; }
  .float-b { left: 0; }
  .grid-4, .tracks-grid { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .gallery, .gallery-3 { grid-template-columns: repeat(2, 1fr); }
  .oss-head { grid-template-columns: 1fr; }
  .oss-stats { grid-column: 1; grid-row: auto; flex-wrap: wrap; gap: 14px 28px; }
  .oss-stats li { text-align: left; }
  .dev-split { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .section { padding: 64px 0; }
  .hero { padding-top: 48px; }
  .hero-cta .btn { flex: 1 1 auto; }
  .hero-stats { gap: 8px 24px; }
  .hero-stats strong { font-size: 22px; }
  .duo { grid-template-columns: 1fr; }
  .gallery, .gallery-3, .grid-3, .grid-4, .tracks-grid, .cta-grid { grid-template-columns: 1fr; }
  .oss { padding: 26px 18px 22px; border-radius: 22px; }
  .qr-card { flex-direction: column; align-items: flex-start; }
  .timeline { padding-left: 26px; }
  .tl-item { padding: 20px 18px; }
  .tl-item::before { left: -23px; }
  .timeline::before { left: 5px; }
  .announce { font-size: 12px; }
  .gh-pill { display: none; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-legal { flex-direction: column; }
  .cta-frame { padding: 44px 20px 40px; border-radius: 24px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .eco-track, .hero-float, .dot { animation: none; }
  .reveal { opacity: 1; transform: none; transition: none; }
}