/* ============================================================
   BAIOS — style.css
   暗色科技 HUD 主题 / WebGL hero / GSAP reveals / 公司站叙事
   ============================================================ */

:root {
  --bg: #05060b;
  --bg-2: #080a11;
  --panel: rgba(12, 16, 26, 0.66);
  --panel-solid: #0b0e16;
  --line: rgba(110, 220, 255, 0.14);
  --line-strong: rgba(110, 220, 255, 0.32);
  --txt: #dce7f5;
  --txt-dim: #7e8ea6;
  --cyan: #22d3ee;
  --cyan-bright: #00e5ff;
  --cyan-deep: #0e7490;
  --glow: 0 0 24px rgba(0, 229, 255, 0.28);
  --glow-soft: 0 0 60px rgba(0, 229, 255, 0.12);
  --sans: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", -apple-system, "Segoe UI", system-ui, sans-serif;
  --mono: ui-monospace, "Cascadia Code", "JetBrains Mono", "SF Mono", Consolas, "Courier New", monospace;
}

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

html { scroll-behavior: auto; }

html.lenis, html.lenis body { height: auto; }
.lenis.lenis-smooth { scroll-behavior: auto !important; }

body {
  background: var(--bg);
  color: var(--txt);
  font-family: var(--sans);
  line-height: 1.75;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

::selection { background: rgba(0, 229, 255, 0.28); color: #fff; }

a { color: inherit; text-decoration: none; }

/* ---------- 全局特效层 ---------- */
.fx-scanlines {
  position: fixed; inset: 0; z-index: 90; pointer-events: none;
  background: repeating-linear-gradient(
    to bottom,
    transparent 0px, transparent 2px,
    rgba(0, 0, 0, 0.12) 3px, transparent 4px
  );
  mix-blend-mode: multiply;
  opacity: 0.5;
}

.fx-grid {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(110, 220, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(110, 220, 255, 0.045) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 90% 70% at 50% 30%, #000 0%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 30%, #000 0%, transparent 75%);
}

.fx-vignette {
  position: fixed; inset: 0; z-index: 89; pointer-events: none;
  background: radial-gradient(ellipse 120% 100% at 50% 50%, transparent 55%, rgba(2, 4, 9, 0.55) 100%);
}

/* ---------- 自定义光标 ---------- */
.cursor-dot, .cursor-ring {
  position: fixed; top: 0; left: 0; z-index: 200; pointer-events: none;
  border-radius: 50%; transform: translate(-50%, -50%);
  display: none;
}
.cursor-dot { width: 6px; height: 6px; background: var(--cyan-bright); box-shadow: var(--glow); }
.cursor-ring {
  width: 34px; height: 34px;
  border: 1px solid rgba(0, 229, 255, 0.5);
  transition: width 0.25s ease, height 0.25s ease, border-color 0.25s ease, background 0.25s ease;
}
.cursor-ring.is-hover {
  width: 52px; height: 52px;
  border-color: var(--cyan-bright);
  background: rgba(0, 229, 255, 0.07);
}
@media (pointer: fine) {
  .cursor-dot, .cursor-ring { display: block; }
}

/* ---------- 顶部滚动进度 ---------- */
.progress-bar {
  position: fixed; top: 0; left: 0; right: 0; height: 2px; z-index: 150;
  background: transparent;
}
.progress-bar span {
  display: block; height: 100%; width: 0%;
  background: linear-gradient(90deg, var(--cyan-deep), var(--cyan-bright));
  box-shadow: var(--glow);
}

/* ---------- 导航 ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 120;
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 40px;
  transition: background 0.35s ease, border-color 0.35s ease, padding 0.35s ease;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  padding: 12px 40px;
  background: rgba(5, 6, 11, 0.78);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom-color: var(--line);
}
.nav-logo {
  font-family: var(--mono); font-size: 20px; font-weight: 700;
  letter-spacing: 2px; color: var(--txt);
}
.nav-logo span { color: var(--cyan-bright); }
.nav-blink {
  display: inline-block; width: 8px; height: 16px; margin-left: 6px;
  background: var(--cyan-bright); vertical-align: -2px;
  animation: blink 1.1s steps(2) infinite;
}
@keyframes blink { 50% { opacity: 0; } }
.nav-links { display: flex; gap: 34px; }
.nav-links a {
  font-size: 14px; color: var(--txt-dim); letter-spacing: 2px;
  position: relative; padding: 4px 0;
  transition: color 0.25s ease;
}
.nav-links a::after {
  content: ""; position: absolute; left: 0; bottom: 0;
  width: 0; height: 1px; background: var(--cyan-bright);
  box-shadow: var(--glow); transition: width 0.3s ease;
}
.nav-links a:hover { color: var(--txt); }
.nav-links a:hover::after { width: 100%; }

.nav-right {
  display: flex; align-items: center; gap: 24px;
}

/* 语言切换器 */
.lang-switch {
  display: flex; align-items: center; gap: 4px;
  font-family: var(--mono); font-size: 12px; letter-spacing: 1px;
}
.lang-btn {
  background: none; border: none; padding: 5px 8px;
  font: inherit; color: var(--txt-dim); cursor: pointer;
  transition: color 0.25s ease, text-shadow 0.25s ease;
}
.lang-btn:hover { color: var(--txt); }
.lang-btn.active {
  color: var(--cyan-bright);
  text-shadow: var(--glow);
}
.lang-sep { color: rgba(110, 220, 255, 0.25); }

.nav-status {
  display: flex; align-items: center; gap: 8px;
  font-family: var(--mono); font-size: 11px; letter-spacing: 2px;
  color: var(--txt-dim);
}
.nav-status i {
  width: 7px; height: 7px; border-radius: 50%;
  background: #34d399; box-shadow: 0 0 10px #34d399;
  animation: pulse 2s ease infinite;
}
@keyframes pulse { 50% { opacity: 0.45; } }

/* ---------- HERO ---------- */
.hero {
  position: relative; min-height: 100vh; min-height: 100svh;
  display: flex; align-items: center; justify-content: center;
  overflow: hidden;
}
#scene {
  position: absolute; inset: 0; width: 100%; height: 100%;
  pointer-events: none;
}
.hero-hud {
  position: absolute; top: 96px; right: 40px; z-index: 5;
  display: flex; gap: 10px;
}
.hud-tag {
  font-family: var(--mono); font-size: 11px; letter-spacing: 2px;
  color: var(--txt-dim); border: 1px solid var(--line);
  padding: 4px 12px; background: rgba(8, 10, 17, 0.6);
  backdrop-filter: blur(6px);
}
.hud-tag.live { color: #34d399; border-color: rgba(52, 211, 153, 0.3); }
.hud-tag.live i {
  display: inline-block; width: 6px; height: 6px; border-radius: 50%;
  background: #34d399; margin-right: 7px; box-shadow: 0 0 8px #34d399;
  animation: pulse 1.6s ease infinite;
}
.hero-inner {
  position: relative; z-index: 5; text-align: center;
  padding: 0 24px; max-width: 960px;
}
.boot {
  font-family: var(--mono); font-size: 13px; color: var(--cyan);
  text-align: left; min-height: 124px; margin: 0 auto 30px;
  max-width: 480px; opacity: 0.95;
}
.boot .line { white-space: pre-wrap; }
.boot .ok { color: #34d399; }
.boot .caret {
  display: inline-block; width: 8px; height: 15px;
  background: var(--cyan-bright); vertical-align: -2px; margin-left: 2px;
  animation: blink 1s steps(2) infinite;
}

.hero-title {
  font-family: var(--mono);
  font-size: clamp(72px, 13vw, 152px);
  font-weight: 800; letter-spacing: 8px; line-height: 1.04;
  color: #f2f8ff;
  text-shadow: 0 0 44px rgba(0, 229, 255, 0.4);
  opacity: 0;
}
.hero-sub {
  margin-top: 20px;
  font-family: var(--mono); font-size: clamp(13px, 1.8vw, 17px);
  letter-spacing: 8px; color: var(--cyan);
  opacity: 0;
}
.hero-desc {
  margin-top: 22px; font-size: 16.5px; color: var(--txt-dim);
  letter-spacing: 1px; max-width: 620px; margin-inline: auto;
  opacity: 0;
}
.hero-cta {
  margin-top: 46px; display: flex; gap: 18px;
  justify-content: center; flex-wrap: wrap;
  opacity: 0;
}

/* glitch 标题 */
.glitch { position: relative; }
.glitch::before, .glitch::after {
  content: attr(data-text);
  position: absolute; inset: 0; overflow: hidden;
  opacity: 0.85;
}
.glitch::before { color: #ff2a6d; clip-path: inset(12% 0 62% 0); animation: glitch-a 3.2s infinite steps(1); }
.glitch::after  { color: #05d9e8; clip-path: inset(58% 0 12% 0); animation: glitch-b 2.7s infinite steps(1); }
@keyframes glitch-a {
  0%, 86%, 100% { transform: none; opacity: 0; }
  87% { transform: translate(-4px, -2px); opacity: 0.8; }
  92% { transform: translate(3px, 1px); opacity: 0.6; }
  97% { transform: translate(-2px, 2px); opacity: 0.8; }
}
@keyframes glitch-b {
  0%, 82%, 100% { transform: none; opacity: 0; }
  84% { transform: translate(4px, 2px); opacity: 0.8; }
  89% { transform: translate(-3px, -1px); opacity: 0.6; }
  94% { transform: translate(2px, -2px); opacity: 0.8; }
}

/* HUD 按钮 */
.btn {
  position: relative; display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--mono); font-size: 14px; letter-spacing: 2px;
  padding: 14px 30px; color: var(--txt);
  border: 1px solid var(--line-strong);
  background: rgba(8, 10, 17, 0.55);
  backdrop-filter: blur(6px);
  transition: all 0.3s ease;
  clip-path: polygon(12px 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%, 0 12px);
}
.btn::before, .btn::after {
  content: ""; position: absolute; width: 10px; height: 10px;
  border-color: var(--cyan-bright); border-style: solid;
  transition: all 0.3s ease;
}
.btn::before { top: -1px; right: -1px; border-width: 1px 1px 0 0; }
.btn::after { bottom: -1px; left: -1px; border-width: 0 0 1px 1px; }
.btn:hover {
  color: #031018;
  background: var(--cyan-bright);
  box-shadow: var(--glow), 0 0 80px rgba(0, 229, 255, 0.25);
  border-color: var(--cyan-bright);
}
.btn:hover::before, .btn:hover::after { width: 18px; height: 18px; }
.btn-primary { border-color: var(--cyan-bright); color: var(--cyan-bright); }
.btn-arrow { transition: transform 0.3s ease; }
.btn:hover .btn-arrow { transform: translateY(3px); }
.btn-bracket { opacity: 0.6; }

.scroll-hint {
  position: absolute; bottom: 34px; left: 50%; transform: translateX(-50%);
  z-index: 5; display: flex; flex-direction: column; align-items: center; gap: 10px;
  font-family: var(--mono); font-size: 10px; letter-spacing: 4px; color: var(--txt-dim);
}
.scroll-hint i {
  width: 1px; height: 42px;
  background: linear-gradient(to bottom, var(--cyan-bright), transparent);
  animation: drip 1.8s ease infinite;
}
@keyframes drip {
  0% { transform: scaleY(0); transform-origin: top; }
  45% { transform: scaleY(1); transform-origin: top; }
  55% { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ---------- 数据看板 ---------- */
.stats-band {
  position: relative; z-index: 10;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(10, 14, 24, 0.85), rgba(6, 8, 14, 0.85));
  backdrop-filter: blur(8px);
}
.stats-inner {
  max-width: 1100px; margin: 0 auto;
  display: grid; grid-template-columns: repeat(4, 1fr);
  padding: 8px 40px;
}
.stat {
  padding: 52px 20px 46px; text-align: center;
  border-left: 1px solid var(--line);
}
.stat:first-child { border-left: none; }
.stat-num {
  display: block;
  font-family: var(--mono); font-size: clamp(40px, 5.4vw, 64px);
  font-weight: 700; letter-spacing: 2px; color: var(--cyan-bright);
  text-shadow: 0 0 30px rgba(0, 229, 255, 0.35);
  line-height: 1.1;
}
.stat-label {
  display: block; margin-top: 12px;
  font-family: var(--mono); font-size: 12px; letter-spacing: 4px;
  color: var(--txt-dim);
}

/* ---------- 通用区块 ---------- */
.section {
  position: relative; z-index: 10;
  max-width: 1100px; margin: 0 auto;
  padding: 140px 40px 40px;
}
.section-head {
  display: flex; align-items: baseline; gap: 18px; margin-bottom: 54px;
}
.section-idx {
  font-family: var(--mono); font-size: 14px; color: var(--cyan-bright);
  letter-spacing: 2px;
}
.section-title {
  font-family: var(--mono); font-size: clamp(24px, 3.4vw, 34px);
  font-weight: 700; letter-spacing: 4px; color: var(--txt);
  white-space: nowrap;
}
.section-cn { color: var(--txt-dim); font-weight: 400; font-size: 0.62em; letter-spacing: 2px; }
.section-rule {
  flex: 1; height: 1px;
  background: linear-gradient(90deg, var(--line-strong), transparent);
}
.section-intro {
  color: var(--txt-dim); max-width: 560px; margin: -22px 0 44px;
  font-size: 15px;
}

/* ---------- 01 愿景 ---------- */
.manifesto {
  font-size: clamp(28px, 4.6vw, 52px);
  font-weight: 700; line-height: 1.55; letter-spacing: 2px;
  max-width: 940px;
}
.manifesto .cyan {
  color: var(--cyan-bright);
  text-shadow: 0 0 34px rgba(0, 229, 255, 0.4);
}
.vision-lead {
  margin-top: 30px; max-width: 680px;
  color: var(--txt-dim); font-size: 16px;
}
.vision-grid {
  margin-top: 64px;
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px;
}
.vision-card {
  position: relative;
  border: 1px solid var(--line);
  background: var(--panel);
  backdrop-filter: blur(8px);
  padding: 36px 30px 32px;
  transition: transform 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease;
  clip-path: polygon(18px 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%, 0 18px);
}
.vision-card:hover {
  transform: translateY(-6px);
  border-color: var(--line-strong);
  box-shadow: var(--glow-soft);
}
.vision-tag {
  font-family: var(--mono); font-size: 11px; letter-spacing: 3px;
  color: var(--cyan);
}
.vision-card h3 {
  margin: 16px 0 14px; font-size: 24px; letter-spacing: 6px;
}
.vision-card p { color: var(--txt-dim); font-size: 14.5px; }

/* ---------- 02 业务 ---------- */
.module-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px;
}
.module-card {
  position: relative;
  border: 1px solid var(--line);
  background: var(--panel);
  backdrop-filter: blur(8px);
  padding: 34px 30px 30px;
  transition: transform 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease;
  clip-path: polygon(18px 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%, 0 18px);
}
.module-card:hover {
  transform: translateY(-6px);
  border-color: var(--line-strong);
  box-shadow: var(--glow-soft);
}
.module-no {
  font-family: var(--mono); font-size: 11px; letter-spacing: 3px;
  color: var(--cyan);
}
.module-card h3 {
  margin: 14px 0 12px; font-size: 20px; letter-spacing: 2px;
  font-family: var(--mono);
}
.module-card p { color: var(--txt-dim); font-size: 14.5px; }
.module-tag {
  position: absolute; top: 26px; right: 26px;
  font-family: var(--mono); font-size: 10.5px; letter-spacing: 1.5px;
  color: var(--cyan); border: 1px solid var(--line-strong);
  padding: 3px 10px;
}

/* ---------- 技术栈滚动带 ---------- */
.marquee {
  position: relative; z-index: 10;
  overflow: hidden;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(6, 8, 14, 0.72);
  padding: 24px 0;
  margin: 40px 0 0;
}
.marquee-track {
  display: flex; align-items: center; gap: 46px;
  width: max-content;
  animation: marquee 32s linear infinite;
}
.marquee:hover .marquee-track { animation-play-state: paused; }
.mq-group {
  display: flex; align-items: center; gap: 46px;
  white-space: nowrap;
}
.mq-group span {
  font-family: var(--mono); font-size: 15px; letter-spacing: 3px;
  color: var(--txt-dim);
}
.mq-group i {
  font-style: normal; color: var(--cyan); font-size: 18px;
}
@keyframes marquee {
  to { transform: translateX(calc(-50% - 23px)); }
}

/* ---------- 03 里程碑 ---------- */
.timeline {
  position: relative;
  padding-left: 34px;
}
.timeline::before {
  content: ""; position: absolute; left: 5px; top: 8px; bottom: 8px;
  width: 1px;
  background: linear-gradient(to bottom, var(--cyan-bright), rgba(0, 229, 255, 0.06));
}
.tl-item {
  position: relative;
  padding: 0 0 52px 34px;
}
.tl-item:last-child { padding-bottom: 8px; }
.tl-item::before {
  content: ""; position: absolute; left: -34px; top: 12px;
  width: 11px; height: 11px; border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--cyan-bright);
  box-shadow: var(--glow);
}
.tl-year {
  font-family: var(--mono); font-size: 30px; font-weight: 700;
  letter-spacing: 3px; color: var(--cyan);
}
.tl-title {
  margin: 8px 0 10px; font-size: 20px; letter-spacing: 4px;
}
.tl-desc { color: var(--txt-dim); font-size: 14.5px; max-width: 620px; }

/* ---------- 04 联系 ---------- */
.section-contact { padding-bottom: 170px; }
.contact-box { text-align: center; padding: 30px 0 10px; }
.contact-lead { font-size: 19px; color: var(--txt-dim); letter-spacing: 2px; }
.contact-mail {
  display: inline-block; margin: 28px 0 22px;
  font-family: var(--mono);
  font-size: clamp(26px, 5vw, 48px); font-weight: 700; letter-spacing: 2px;
  color: var(--txt);
  position: relative;
  transition: color 0.3s ease, text-shadow 0.3s ease;
}
.contact-mail::after {
  content: ""; position: absolute; left: 0; bottom: -8px;
  width: 100%; height: 2px;
  background: var(--cyan-bright);
  box-shadow: var(--glow);
  transform: scaleX(0.18); transform-origin: left;
  transition: transform 0.4s ease;
}
.contact-mail:hover { color: var(--cyan-bright); text-shadow: var(--glow); }
.contact-mail:hover::after { transform: scaleX(1); }
.contact-sub { color: var(--txt-dim); font-size: 14px; margin-top: 14px; }

/* ---------- 页脚 ---------- */
.footer {
  position: relative; z-index: 10;
  border-top: 1px solid var(--line);
  background: rgba(5, 6, 11, 0.85);
}
.footer-inner {
  max-width: 1100px; margin: 0 auto; padding: 30px 40px;
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 14px;
  font-family: var(--mono); font-size: 12px; letter-spacing: 1.5px;
  color: var(--txt-dim);
}
.footer-logo { font-size: 16px; color: var(--txt); font-weight: 700; letter-spacing: 2px; }
.footer-logo span { color: var(--cyan-bright); }
.footer-status { display: flex; align-items: center; gap: 8px; }
.footer-status i {
  width: 6px; height: 6px; border-radius: 50%;
  background: #34d399; box-shadow: 0 0 8px #34d399;
  animation: pulse 2s ease infinite;
}

/* ---------- 响应式 ---------- */
@media (max-width: 980px) {
  .vision-grid { grid-template-columns: 1fr 1fr; }
  .module-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 860px) {
  .nav { padding: 14px 22px; }
  .nav.scrolled { padding: 10px 22px; }
  .nav-links { gap: 20px; }
  .nav-links a { font-size: 12.5px; letter-spacing: 1px; }
  .nav-status { display: none; }
  .hero-hud { top: 76px; right: 22px; }
  .section { padding: 100px 22px 30px; }
  .stats-inner { grid-template-columns: 1fr 1fr; padding: 8px 22px; }
  .stat { padding: 40px 14px 34px; }
  .stat:nth-child(3) { border-left: none; }
  .stat:nth-child(-n + 2) { border-bottom: 1px solid var(--line); }
  .footer-inner { justify-content: center; text-align: center; }
}

@media (max-width: 560px) {
  .boot { font-size: 11px; min-height: 100px; }
  .hero-title { letter-spacing: 4px; }
  .hero-sub { letter-spacing: 4px; }
  .vision-grid, .module-grid { grid-template-columns: 1fr; }
  .module-card { padding: 26px 22px 24px; }
  .module-tag { position: static; display: inline-block; margin-top: 14px; }
  .tl-year { font-size: 24px; }
  .section-head { flex-wrap: wrap; gap: 12px; }
  .nav-links { gap: 14px; }
  .nav-links a { font-size: 12px; letter-spacing: 1px; }
  .nav-right { gap: 14px; }
}

/* ---------- 减少动态偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  .glitch::before, .glitch::after { display: none; }
  .nav-blink, .scroll-hint i, .nav-status i, .hud-tag.live i, .footer-status i { animation: none; }
  .marquee-track { animation: none; }
}