/* ==========================================================================
   AI 发酵平台 · 极简引流落地页（深色科技风 · 纯静态，无构建）
   品牌色 / 电话 / 留资接口统一在 main.js 顶部 CONTACT 对象配置，勿改本文件。
   ========================================================================== */

:root {
  --bg: #04070d;
  --bg-2: #0a1220;
  --surface: rgba(16, 26, 42, 0.66);
  --surface-2: rgba(24, 36, 56, 0.5);
  --line: rgba(120, 170, 210, 0.14);
  --line-strong: rgba(56, 189, 248, 0.34);

  --ink: #e8f2f9;
  --ink-2: #a9bccb;
  --ink-3: #8495a8;

  --accent: #22d3ee;       /* 主霓虹青 */
  --accent-2: #38bdf8;     /* 蓝 */
  --accent-3: #818cf8;     /* 紫 */
  --bio: #34d399;          /* 生物绿（状态/在线） */
  --good: #34d399;
  --danger: #f87171;
  --accent-soft: rgba(34, 211, 238, 0.12);
  --accent-glow: rgba(34, 211, 238, 0.5);

  --header-bg: rgba(4, 7, 13, 0.82);
  --visual-bg: linear-gradient(180deg, rgba(16, 26, 42, 0.72), rgba(8, 14, 24, 0.72));
  --modal-bg: linear-gradient(180deg, rgba(18, 30, 48, 0.94), rgba(10, 16, 28, 0.96));
  --input-bg: rgba(4, 7, 13, 0.5);
  --ghost-bg: rgba(16, 26, 42, 0.4);

  --radius: 16px;
  --radius-sm: 9px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, "SF Mono", "JetBrains Mono", "Fira Code", Menlo,
    Consolas, "Liberation Mono", monospace;
}

/* 浅色主题 */
[data-theme="light"] {
  --bg: #f4f8fc;
  --bg-2: #eaf1f7;
  --surface: rgba(255, 255, 255, 0.86);
  --surface-2: rgba(240, 247, 252, 0.75);
  --line: rgba(15, 42, 68, 0.12);
  --line-strong: rgba(14, 116, 144, 0.32);
  --ink: #122434;
  --ink-2: #45586b;
  --ink-3: #5b6b7c;
  --accent: #0b7492;
  --accent-2: #0891b2;
  --accent-3: #6366f1;
  --bio: #0f9d6e;
  --good: #0f9d6e;
  --danger: #dc2626;
  --accent-soft: rgba(14, 116, 144, 0.12);
  --accent-glow: rgba(14, 116, 144, 0.35);
  --header-bg: rgba(255, 255, 255, 0.85);
  --visual-bg: linear-gradient(180deg, rgba(255, 255, 255, 0.94), rgba(238, 246, 252, 0.94));
  --modal-bg: linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(244, 249, 253, 0.98));
  --input-bg: #ffffff;
  --ghost-bg: rgba(255, 255, 255, 0.72);
}
[data-theme="light"] .bg-grid {
  background-image:
    linear-gradient(rgba(15, 42, 68, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15, 42, 68, 0.05) 1px, transparent 1px);
}
[data-theme="light"] .bg-orb { opacity: 0.22; }
[data-theme="light"] .hero-visual {
  box-shadow: 0 20px 50px rgba(15, 42, 68, 0.14), inset 0 1px 0 rgba(255, 255, 255, 0.7);
}
[data-theme="light"] .hero-visual svg text { fill: #52606d; }

* { box-sizing: border-box; }

html { scroll-behavior: smooth; background-color: var(--bg); }

body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

::selection { background: rgba(34, 211, 238, 0.3); }

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.container { max-width: 1080px; margin: 0 auto; padding: 0 24px; }

/* ==========================================================================
   背景层：光晕 + 网格 + 扫描线
   ========================================================================== */
.bg { position: fixed; inset: 0; z-index: 0; overflow: hidden; pointer-events: none; }

.bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(56, 189, 248, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(56, 189, 248, 0.05) 1px, transparent 1px);
  background-size: 44px 44px;
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, #000 35%, transparent 78%);
  mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, #000 35%, transparent 78%);
}

.bg-orb { position: absolute; border-radius: 50%; filter: blur(60px); opacity: 0.4; }
.bg-orb-a { width: 520px; height: 520px; left: -120px; top: -160px;
  background: radial-gradient(circle, rgba(34, 211, 238, 0.5), transparent 62%); animation: float 16s ease-in-out infinite; }
.bg-orb-b { width: 560px; height: 560px; right: -160px; top: 8%;
  background: radial-gradient(circle, rgba(129, 140, 248, 0.42), transparent 62%); animation: float 20s ease-in-out infinite reverse; }
.bg-orb-c { width: 420px; height: 420px; left: 34%; bottom: -180px;
  background: radial-gradient(circle, rgba(52, 211, 153, 0.26), transparent 62%); animation: float 24s ease-in-out infinite; }

@keyframes float {
  0%, 100% { transform: translateY(0) translateX(0); }
  50% { transform: translateY(36px) translateX(22px); }
}

/* 顶部扫描线 */
.bg-scan {
  position: absolute;
  left: 0; right: 0; top: -30%;
  height: 240px;
  background: linear-gradient(180deg, transparent, rgba(34, 211, 238, 0.06), transparent);
  animation: scan 9s linear infinite;
}
@keyframes scan {
  0% { transform: translateY(0); }
  100% { transform: translateY(140vh); }
}

/* 主内容置于背景之上 */
.site-header, main, .site-footer { position: relative; z-index: 1; }

/* ==========================================================================
   顶部导航
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--header-bg);
  border-bottom: 1px solid var(--line);
}

.header-inner { display: flex; align-items: center; gap: 24px; height: 68px; }

.brand { display: flex; align-items: center; gap: 11px; font-weight: 700; font-size: 16px; color: var(--ink); letter-spacing: 0.01em; }
.brand:hover { text-decoration: none; }

.brand-mark {
  width: 28px; height: 28px; border-radius: 8px; flex: none; position: relative;
  background: linear-gradient(135deg, var(--accent), var(--accent-3));
  box-shadow: 0 0 16px var(--accent-glow);
}
.brand-mark::after {
  content: ""; position: absolute; inset: 7px 5px; border-radius: 50%;
  background: rgba(4, 7, 13, 0.82);
}

.site-nav { display: flex; gap: 6px; margin-left: auto; }

.nav-link {
  padding: 8px 16px; border-radius: var(--radius-sm);
  color: var(--ink-2); font-size: 15px; font-weight: 500;
  border: 1px solid transparent;
}
.nav-link:hover { background: var(--surface-2); text-decoration: none; color: var(--ink); }
.nav-link.is-active {
  color: var(--accent); background: var(--accent-soft);
  border-color: rgba(34, 211, 238, 0.25);
  text-shadow: 0 0 12px var(--accent-glow);
}

.theme-toggle {
  width: 40px; height: 40px; border-radius: var(--radius-sm); flex: none;
  border: 1px solid var(--line); background: var(--ghost-bg); color: var(--ink-2);
  cursor: pointer; display: inline-flex; align-items: center; justify-content: center;
  transition: color 0.2s ease, border-color 0.2s ease;
}
.theme-toggle:hover { color: var(--accent); border-color: var(--line-strong); }
.theme-toggle svg { width: 18px; height: 18px; }
.theme-toggle .icon-sun, .theme-toggle .icon-moon { display: none; }
[data-theme="dark"] .theme-toggle .icon-sun { display: block; }
[data-theme="light"] .theme-toggle .icon-moon { display: block; }

.nav-toggle {
  display: none;
  width: 40px; height: 40px; border-radius: var(--radius-sm); flex: none;
  border: 1px solid var(--line); background: var(--ghost-bg); color: var(--ink-2);
  cursor: pointer; flex-direction: column; align-items: center; justify-content: center; gap: 5px;
  transition: color 0.2s ease, border-color 0.2s ease;
}
.nav-toggle:hover { color: var(--accent); border-color: var(--line-strong); }
.nav-toggle span { display: block; width: 18px; height: 2px; background: currentColor; border-radius: 2px; transition: transform 0.2s ease, opacity 0.2s ease; }
.nav-toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.is-open span:nth-child(2) { opacity: 0; }
.nav-toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ==========================================================================
   按钮
   ========================================================================== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 24px; border-radius: var(--radius-sm);
  border: 1px solid transparent; font: inherit; font-size: 15px; font-weight: 600;
  cursor: pointer; letter-spacing: 0.01em;
  transition: transform 0.05s ease, box-shadow 0.2s ease, background 0.2s ease,
    border-color 0.2s ease, color 0.2s ease;
}
.btn:active { transform: translateY(1px); }

.btn-primary {
  color: #04141c;
  background: linear-gradient(135deg, var(--accent-2), var(--accent));
  box-shadow: 0 0 22px var(--accent-glow), inset 0 1px 0 rgba(255, 255, 255, 0.25);
}
.btn-primary:hover { box-shadow: 0 0 34px var(--accent-glow), inset 0 1px 0 rgba(255, 255, 255, 0.25); }

.btn-ghost {
  color: var(--ink);
  background: var(--ghost-bg);
  border-color: var(--line-strong);
}
.btn-ghost:hover { border-color: var(--accent); box-shadow: 0 0 18px rgba(34, 211, 238, 0.22); }

.btn-block { width: 100%; }

/* ==========================================================================
   Hero
   ========================================================================== */
.hero { padding: 72px 0 48px; }
.hero .container { max-width: 1400px; }

.hero-inner { display: flex; flex-direction: column; gap: 46px; align-items: center; text-align: center; }

.status-pill {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 6px 13px; border-radius: 999px;
  border: 1px solid rgba(52, 211, 153, 0.3);
  background: rgba(52, 211, 153, 0.08);
  font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.06em;
  color: var(--bio);
}
.status-pill .dot {
  width: 8px; height: 8px; border-radius: 50%; background: var(--bio);
  box-shadow: 0 0 10px var(--bio); animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.35; } }

.hero h1 {
  margin: 18px 0 16px; font-size: 50px; line-height: 1.14;
  letter-spacing: -0.02em; font-weight: 800; color: var(--ink);
}
.grad {
  background: linear-gradient(92deg, var(--accent-2), var(--accent) 45%, var(--accent-3));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}

.hero-sub { margin: 0 auto 22px; font-size: 18px; color: var(--ink-2); max-width: 40em; }

/* 数据读条 */
.readout {
  display: flex; flex-wrap: wrap; gap: 10px; margin: 0 0 28px; justify-content: center;
}
.readout .chip {
  font-family: var(--font-mono); font-size: 13px; letter-spacing: 0.02em;
  color: var(--ink-2); padding: 7px 12px; border-radius: var(--radius-sm);
  border: 1px solid var(--line); background: var(--surface-2);
}
.readout .chip b { color: var(--accent); font-weight: 600; }

.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; justify-content: center; }

.hero-note { margin: 18px 0 0; font-size: 14px; color: var(--ink-3); }
.hero-note a { font-family: var(--font-mono); }

/* 图表卡 */
.hero-visual {
  position: relative;
  background: var(--visual-bg);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  padding: 24px 26px 16px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.45), inset 0 1px 0 rgba(255, 255, 255, 0.04);
  overflow: hidden;
  width: 100%;
  max-width: none;
}
.hero-visual::before {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(34, 211, 238, 0.07), transparent 45%);
  pointer-events: none;
}

.chart-status {
  display: flex; justify-content: space-between; gap: 10px; flex-wrap: wrap;
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.05em;
  color: var(--ink-3); margin-bottom: 8px;
}
.chart-status .live { color: var(--bio); display: inline-flex; align-items: center; gap: 6px; }
.chart-status .live::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--bio); box-shadow: 0 0 8px var(--bio); }

.hero-visual svg { display: block; width: 100%; height: auto; }
.hero-visual svg text { font-family: var(--font-mono); }

.hero-visual figcaption { font-size: 12px; color: var(--ink-3); text-align: center; margin-top: 8px; }

/* HUD 四角括号 */
.hud { position: absolute; inset: 0; pointer-events: none; color: var(--accent); opacity: 0.7; }
.hero-visual svg.hud { width: 100%; height: 100%; }
.twin-canvas, .viz-canvas { width: 100%; height: 600px; display: block; }

/* 图例 */
.legend { display: flex; flex-wrap: wrap; gap: 8px 16px; justify-content: center; margin-top: 10px; font-family: var(--font-mono); font-size: 11px; color: var(--ink-3); }
.legend-item { display: inline-flex; align-items: center; gap: 6px; }
.legend-item i { width: 8px; height: 8px; border-radius: 50%; background: var(--c, #22d3ee); box-shadow: 0 0 8px var(--c, #22d3ee); }

/* 发酵流程（进料 → 罐内发酵 → 出料） */
.process-flow { display: flex; align-items: center; justify-content: center; gap: 12px; flex-wrap: wrap; margin-top: 12px; font-family: var(--font-mono); font-size: 12px; color: var(--ink-2); }
.process-flow .pf-step { display: inline-flex; align-items: center; gap: 6px; }
.process-flow .pf-step i { width: 9px; height: 9px; border-radius: 50%; background: var(--c, #22d3ee); box-shadow: 0 0 10px var(--c, #22d3ee); }
.process-flow .pf-arrow { color: var(--accent); opacity: 0.7; }

/* 卡片扫描光带 */
.card-scan {
  position: absolute; left: 0; right: 0; top: -40%; height: 90px;
  background: linear-gradient(180deg, transparent, rgba(34, 211, 238, 0.05), transparent);
  animation: cardScan 7s linear infinite; pointer-events: none;
}
@keyframes cardScan { 0% { transform: translateY(0); } 100% { transform: translateY(340px); } }

/* ==========================================================================
   章节
   ========================================================================== */
.section { padding: 60px 0; }
.section-head { max-width: 40em; margin-bottom: 34px; }
.section-title { margin: 0 0 8px; font-size: 27px; font-weight: 800; letter-spacing: -0.01em; }
.section-sub { margin: 0; color: var(--ink-2); font-size: 16px; }

.section-kicker {
  font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.14em;
  color: var(--accent); text-transform: uppercase; margin: 0 0 10px;
}

/* ---------- 能力卡片 ---------- */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }

.card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}
.card::before {
  content: ""; position: absolute; left: 26px; right: 26px; top: 0; height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0; transition: opacity 0.2s ease;
}
.card:hover { transform: translateY(-4px); border-color: var(--line-strong); box-shadow: 0 16px 40px rgba(0, 0, 0, 0.4), 0 0 30px rgba(34, 211, 238, 0.08); }
.card:hover::before { opacity: 1; }

.card h3 { margin: 0 0 10px; font-size: 17px; font-weight: 700; }
.card p { margin: 0; color: var(--ink-2); font-size: 15px; }

.card-icon {
  width: 44px; height: 44px; border-radius: 11px; flex: none;
  display: flex; align-items: center; justify-content: center;
  font-size: 19px; margin-bottom: 16px;
  color: var(--accent); background: var(--accent-soft);
  border: 1px solid rgba(34, 211, 238, 0.25);
  box-shadow: 0 0 16px rgba(34, 211, 238, 0.12) inset;
}

/* ---------- 步骤 ---------- */
.steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; position: relative; }
.steps::before {
  content: ""; position: absolute; left: 8%; right: 8%; top: 30px; height: 1px;
  background: linear-gradient(90deg, transparent, var(--line-strong), transparent);
}
.steps li {
  position: relative; background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 26px;
}
.step-num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 40px; height: 40px; border-radius: 50%;
  font-family: var(--font-mono); font-weight: 700; font-size: 15px;
  color: var(--accent); background: var(--bg-2);
  border: 1px solid var(--line-strong);
  box-shadow: 0 0 18px rgba(34, 211, 238, 0.25), inset 0 0 12px rgba(34, 211, 238, 0.12);
  margin-bottom: 16px;
}
.steps h3 { margin: 0 0 8px; font-size: 16px; }
.steps p { margin: 0; color: var(--ink-2); font-size: 14px; }

/* ---------- 产品界面 ---------- */
.product-shot {
  margin: 0; border: 1px solid var(--line);
  border-radius: var(--radius); overflow: hidden;
  background: var(--surface);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.45), 0 0 44px rgba(34, 211, 238, 0.07);
}
.product-chrome {
  display: flex; align-items: center; gap: 7px;
  padding: 12px 16px; border-bottom: 1px solid var(--line);
  background: var(--surface-2);
}
.product-chrome .dot { width: 11px; height: 11px; border-radius: 50%; flex: none; }
.product-chrome .dot:nth-child(1) { background: #f87171; }
.product-chrome .dot:nth-child(2) { background: #fbbf24; }
.product-chrome .dot:nth-child(3) { background: #34d399; }
.chrome-url {
  flex: 1; text-align: center; font-size: 13px; color: var(--ink-3);
  font-family: var(--font-mono); letter-spacing: 0.02em;
}
.product-shot img { display: block; width: 100%; height: auto; background: var(--bg-2); }
.product-shot figcaption {
  padding: 12px 16px; font-size: 13px; color: var(--ink-3);
  border-top: 1px solid var(--line); text-align: center;
}

/* ==========================================================================
   CTA
   ========================================================================== */
.cta { padding: 60px 0; }
.cta-panel {
  position: relative; overflow: hidden; text-align: center;
  padding: 48px 32px; border-radius: var(--radius);
  border: 1px solid var(--line-strong);
  background: linear-gradient(135deg, rgba(34, 211, 238, 0.12), rgba(129, 140, 248, 0.1) 55%, rgba(52, 211, 153, 0.08));
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}
.cta-panel h2 { margin: 0 0 10px; font-size: 28px; font-weight: 800; }
.cta-panel p { margin: 0 auto 26px; color: var(--ink-2); font-size: 16px; max-width: 30em; }
.cta-panel .phone-line { margin-top: 18px; font-size: 15px; color: var(--ink-3); }
.cta-panel .phone-line a { font-family: var(--font-mono); color: var(--accent); font-weight: 600; }

/* ==========================================================================
   页脚
   ========================================================================== */
.site-footer { border-top: 1px solid var(--line); padding: 28px 0; color: var(--ink-3); font-size: 14px; }
.footer-inner { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.footer-inner a { color: var(--ink-2); font-family: var(--font-mono); }
.footer-inner a:hover { color: var(--accent); }

/* ==========================================================================
   弹窗
   ========================================================================== */
.modal-backdrop {
  position: fixed; inset: 0; z-index: 50;
  background: rgba(2, 4, 8, 0.66);
  backdrop-filter: blur(6px);
  display: flex; align-items: center; justify-content: center;
  padding: 24px; opacity: 0; pointer-events: none;
  transition: opacity 0.18s ease;
}
.modal-backdrop.is-open { opacity: 1; pointer-events: auto; }

.modal {
  background: var(--modal-bg);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.6), 0 0 40px rgba(34, 211, 238, 0.08);
  width: 100%; max-width: 440px; padding: 30px; position: relative;
  max-height: calc(100vh - 48px); overflow-y: auto;
  transform: translateY(8px); transition: transform 0.18s ease;
}
.modal-backdrop.is-open .modal { transform: translateY(0); }

.modal-close {
  position: absolute; top: 16px; right: 16px; width: 32px; height: 32px;
  border: 1px solid var(--line); border-radius: var(--radius-sm);
  background: var(--surface-2); color: var(--ink-2); font-size: 20px; line-height: 1;
  cursor: pointer;
}
.modal-close:hover { color: var(--ink); border-color: var(--line-strong); }

.modal h2 { margin: 0 0 6px; font-size: 22px; font-weight: 800; }
.modal-sub { margin: 0 0 18px; color: var(--ink-2); font-size: 14px; }

.phone-card {
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
  background: var(--accent-soft); border: 1px solid rgba(34, 211, 238, 0.3);
  border-radius: var(--radius-sm); padding: 14px 16px; margin-bottom: 20px;
  box-shadow: 0 0 24px rgba(34, 211, 238, 0.08) inset;
}
.phone-card .phone-label { font-size: 13px; color: var(--ink-2); width: 100%; margin: 0; }
.phone-number { font-family: var(--font-mono); font-size: 23px; font-weight: 700; color: var(--accent); letter-spacing: 0.01em; text-shadow: 0 0 14px var(--accent-glow); }
.phone-number:hover { text-decoration: none; }
.phone-card .btn-copy { padding: 8px 14px; font-size: 13px; margin-left: auto; }

.lead-form { display: flex; flex-direction: column; gap: 14px; }
.lead-form label { display: flex; flex-direction: column; gap: 6px; font-size: 13px; font-weight: 600; color: var(--ink-2); }
.lead-form input, .lead-form textarea {
  font: inherit; font-weight: 400; color: var(--ink);
  padding: 11px 12px; border: 1px solid var(--line); border-radius: var(--radius-sm);
  background: var(--input-bg); width: 100%;
}
.lead-form input::placeholder, .lead-form textarea::placeholder { color: var(--ink-3); }
.lead-form input:focus, .lead-form textarea:focus {
  outline: none; border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft), 0 0 14px rgba(34, 211, 238, 0.12);
}

.form-success {
  display: none; background: rgba(52, 211, 153, 0.1);
  border: 1px solid rgba(52, 211, 153, 0.35); border-radius: var(--radius-sm);
  padding: 16px; color: var(--good); font-size: 14px; margin-top: 4px;
}
.form-success.is-visible { display: block; }
.form-success a { color: var(--good); font-weight: 700; font-family: var(--font-mono); }

.form-error { color: var(--danger); font-size: 13px; margin: 0; min-height: 1em; }

/* 蜜罐字段：移出可视区，正常用户看不到 */
.hp-field { position: absolute !important; left: -9999px !important; top: -9999px !important; width: 1px; height: 1px; opacity: 0; }

/* 留资未开放提示 */
.form-disabled-note {
  margin: 0 0 18px; padding: 14px 16px;
  background: var(--accent-soft); border: 1px solid rgba(34, 211, 238, 0.3);
  border-radius: var(--radius-sm); color: var(--ink-2); font-size: 14px; line-height: 1.6;
}
.form-disabled-note a { color: var(--accent); font-weight: 700; font-family: var(--font-mono); }
.lead-form input:disabled, .lead-form textarea:disabled {
  opacity: 0.55; cursor: not-allowed; background: var(--surface-2);
}
.modal-legal { margin: 14px 0 0; font-size: 12px; color: var(--ink-3); }

/* ==========================================================================
   炫酷动效：光标光斑 / 按钮流光 / 滚动入场 / 打字光标
   ========================================================================== */

/* 鼠标光斑跟随（由 JS 在精细指针设备上创建） */
.cursor-glow {
  position: fixed;
  left: -240px;
  top: -240px;
  width: 480px;
  height: 480px;
  z-index: 2;
  border-radius: 50%;
  pointer-events: none;
  background: radial-gradient(circle, rgba(34, 211, 238, 0.16), rgba(56, 189, 248, 0.06) 42%, transparent 70%);
  mix-blend-mode: screen;
  will-change: transform;
}
[data-theme="light"] .cursor-glow { mix-blend-mode: normal; opacity: 0.55; }

/* 主 CTA 按钮旋转流光描边 */
@property --angle { syntax: '<angle>'; inherits: false; initial-value: 0deg; }

.btn-primary { position: relative; z-index: 0; }
.btn-primary::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1.5px;
  background: conic-gradient(from var(--angle, 0deg),
    rgba(255, 255, 255, 0.25) 0deg,
    rgba(255, 255, 255, 0.95) 45deg,
    var(--accent) 90deg,
    rgba(255, 255, 255, 0.25) 160deg,
    rgba(255, 255, 255, 0.25) 360deg);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
          mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
          mask-composite: exclude;
  animation: border-rotate 3.5s linear infinite;
  z-index: -1;
  pointer-events: none;
}
@keyframes border-rotate { to { --angle: 360deg; } }

/* 3D 倾斜与视差：提升为独立图层，位移更顺滑 */
.hero-visual, .card { will-change: transform; }

/* 滚动入场动画 */
.reveal { opacity: 0; }
.reveal.is-visible {
  opacity: 1;
  animation: reveal-up 0.6s cubic-bezier(0.22, 1, 0.36, 1) backwards;
  animation-delay: var(--reveal-delay, 0ms);
}
@keyframes reveal-up {
  from { opacity: 0; transform: translateY(24px); }
}

/* 实时遥测单位 */
.readout .chip .t-unit { opacity: 0.65; font-size: 11px; margin-left: 2px; }

/* 打字机光标 */
.caret {
  display: inline-block;
  width: 2px;
  height: 0.92em;
  margin-left: 2px;
  vertical-align: -0.08em;
  background: var(--accent);
  animation: caret-blink 0.9s steps(2, start) infinite;
}
@keyframes caret-blink { 50% { opacity: 0; } }

/* ==========================================================================
   响应式
   ========================================================================== */
@media (max-width: 880px) {
  .hero { padding: 40px 0 20px; }
  .hero h1 { font-size: 34px; }
  .cards, .steps { grid-template-columns: 1fr; }
  .steps::before { display: none; }
  .site-header .js-open-contact { display: none; }
  .nav-toggle { display: inline-flex; }
  .site-nav {
    position: absolute; top: 100%; left: 0; right: 0;
    display: none; flex-direction: column; gap: 4px;
    background: var(--header-bg);
    border-bottom: 1px solid var(--line);
    padding: 10px 24px 16px;
  }
  .site-nav.is-open { display: flex; }
  .nav-link { padding: 12px 14px; }
  .twin-canvas, .viz-canvas { height: 400px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .bg-orb, .bg-scan, .card-scan, .status-pill .dot, .btn-primary::before, .caret { animation: none !important; }
  .modal-backdrop, .modal { transition: none; }
  .reveal { opacity: 1 !important; }
  .cursor-glow { display: none; }
}