/* =============================================================
   One0 AI · 全站基础层
   - 六个页面共用：tokens / reset / 背景特效 / 顶栏 / 页脚 / 按钮 /
     区块标题 / 留资带 / 表单 / FAQ / 入场动效
   - 所有动效遵守 prefers-reduced-motion
   - 品牌主色 #e89148 与 web-tools、admin 后台保持一致
   ============================================================= */

:root {
  --brand: #e89148;
  --brand-light: #fbbf24;
  --brand-deep: #d77a2e;
  --bg: #0b0a0f;
  --bg-soft: #14110d;
  --text: #f5efe6;
  --text-sub: #b9b0a3;
  --text-muted: #7c7568;
  --border: rgba(232, 145, 72, 0.16);
  --card: rgba(255, 255, 255, 0.035);
  --surface: linear-gradient(160deg, rgba(255, 255, 255, 0.11), rgba(255, 255, 255, 0.04));
  --surface-border: rgba(255, 255, 255, 0.09);
  --radius: 18px;
  --radius-lg: 22px;
  --shadow-lift: 0 24px 54px -24px rgba(232, 145, 72, 0.5);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 72px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 16.5px;
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
::selection { background: rgba(232, 145, 72, 0.35); color: #fff; }

/* ============ 背景特效层 ============ */
.fx { position: fixed; inset: 0; z-index: 0; pointer-events: none; overflow: hidden; }
.fx-glow {
  position: absolute;
  border-radius: 50%;
  /* 用较小的 blur + 提升为独立合成层，避免滚动时整片重新栅格化 */
  filter: blur(48px);
  opacity: 0.5;
  transform: translateZ(0);
}
.fx-glow-1 {
  width: 540px; height: 540px;
  top: -180px; right: -120px;
  background: radial-gradient(circle, rgba(232, 145, 72, 0.45), transparent 70%);
}
.fx-glow-2 {
  width: 420px; height: 420px;
  top: 30%; left: -160px;
  background: radial-gradient(circle, rgba(251, 191, 36, 0.28), transparent 70%);
}
.fx-glow-3 {
  width: 480px; height: 480px;
  bottom: -200px; left: 40%;
  background: radial-gradient(circle, rgba(215, 122, 46, 0.3), transparent 70%);
}
/* 光晕刻意不做 transform 动画：3 个大尺寸高斯模糊层同时跑 infinite 动画
   会逐帧重新合成整片模糊区，是滚动卡顿的主因，静态效果视觉上几乎无差别。 */

.wrap { position: relative; z-index: 1; }
.container { width: min(1180px, 92vw); margin: 0 auto; }
.narrow { width: min(880px, 92vw); margin: 0 auto; }

/* ============ 区块骨架 ============ */
.hero { display: flex; flex-direction: column; justify-content: center; }
section.block { position: relative; padding: 84px 0; }
/* 区块之间淡淡的渐变分隔线（贴区块上边界，与上一区块自然分隔） */
section.block + section.block::before {
  content: '';
  position: absolute;
  top: 0; left: 50%;
  transform: translateX(-50%);
  width: min(1180px, 92vw);
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(232, 145, 72, 0.22), transparent);
}

.sec-head { text-align: center; margin-bottom: 44px; }
.sec-head.left { text-align: left; }
.sec-head.left p { margin-left: 0; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 14px; font-weight: 700; color: var(--brand);
  padding: 5px 14px; border-radius: 999px; margin-bottom: 14px;
  background: rgba(232, 145, 72, 0.09); border: 1px solid rgba(232, 145, 72, 0.2);
}
.sec-head h2 { font-size: clamp(26px, 4vw, 38px); font-weight: 800; line-height: 1.25; }
.sec-head h2 .em {
  background: linear-gradient(135deg, #fb923c, #fbbf24);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 0 24px rgba(251, 146, 60, 0.25));
}
.sec-head p { color: var(--text-sub); font-size: 15px; margin-top: 12px; max-width: 620px; margin-left: auto; margin-right: auto; }

/* ============ 顶栏 ============ */
header {
  position: sticky; top: 0; z-index: 50;
  /* sticky + backdrop-filter 每帧重算模糊，开销大；改高不透明度纯色背景 */
  background: rgba(11, 10, 15, 0.96);
  border-bottom: 1px solid var(--border);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  height: 64px; gap: 16px;
}
.brand {
  display: inline-flex; align-items: center; gap: 10px;
  text-decoration: none; line-height: 1; flex-shrink: 0;
}

/* 文字 Logo：与 web-tools AppLayout 保持同一套渐变写法 */
.logo-one0 {
  display: inline-flex; align-items: center;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-weight: 800; line-height: 1;
  background: linear-gradient(90deg, #e89148 0%, #fb923c 40%, #fdba74 70%, #fdd0a0 100%);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
  transition: transform .3s ease;
}
.brand:hover .logo-one0 { transform: scale(1.05); }
.logo-one0-O    { font-size: 26px; letter-spacing: -0.03em; }
.logo-one0-ne   { font-size: 20px; letter-spacing: -0.02em; }
.logo-one0-zero { font-size: 22px; letter-spacing: -0.02em; margin-left: 1px; }
.logo-sub {
  font-size: 15px; font-weight: 700; letter-spacing: 0.02em; line-height: 1;
  background: linear-gradient(135deg, #fbbf24 0%, #fb923c 50%, #f5a55c 100%);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
  align-self: center; transform: translateY(2px);
  white-space: nowrap;
}

.nav-links { display: flex; align-items: center; gap: 24px; }
.nav-links a { font-size: 15px; color: var(--text-sub); transition: color 0.2s; white-space: nowrap; }
.nav-links a:hover { color: var(--brand-light); }
/* 当前页高亮：各页 HTML 在对应 <a> 上加 aria-current="page" */
.nav-links a[aria-current="page"] { color: var(--brand-light); }
.nav-links a.nav-cta {
  padding: 9px 20px; border-radius: 999px; font-size: 15px; font-weight: 700;
  color: #fff;
  background: linear-gradient(135deg, #f5a55c 0%, #e89148 55%, #d77a2e 100%);
  border: 1px solid rgba(255, 255, 255, 0.14);
  box-shadow: 0 6px 18px -6px rgba(232, 145, 72, 0.55), inset 0 1px 0 rgba(255, 255, 255, 0.25);
  transition: transform 0.2s, filter 0.2s, box-shadow 0.2s;
}
.nav-links a.nav-cta:hover {
  color: #fff; transform: translateY(-1px); filter: brightness(1.07);
  box-shadow: 0 10px 24px -6px rgba(232, 145, 72, 0.7), inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.nav-tools { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.nav-tools-label { font-size: 13.5px; color: var(--text-muted); }
.nav-tools a { font-size: 13.5px; color: var(--text-sub); }
.nav-tools a:hover { color: var(--brand-light); }

/* 移动端抽屉导航：桌面隐藏，≤900px 显示按钮与面板 */
.nav-toggle {
  display: none; width: 42px; height: 42px; border-radius: 12px;
  background: rgba(255, 255, 255, 0.06); border: 1px solid var(--border);
  color: var(--text); cursor: pointer; place-items: center; line-height: 0;
}
.nav-toggle svg { width: 20px; height: 20px; }
.nav-toggle .icon-close { display: none; }
.nav-toggle[aria-expanded="true"] .icon-menu { display: none; }
.nav-toggle[aria-expanded="true"] .icon-close { display: block; }

.mobile-menu {
  display: none;
  border-top: 1px solid var(--border);
  background: rgba(11, 10, 15, 0.99);
  padding: 8px 0 16px;
}
.mobile-menu.is-open { display: block; }
.mobile-menu a {
  display: block; padding: 12px 4vw; font-size: 15.5px; color: var(--text-sub);
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}
.mobile-menu a:hover, .mobile-menu a[aria-current="page"] { color: var(--brand-light); }
.mobile-menu a.mobile-cta {
  margin: 14px 4vw 0; text-align: center; border-radius: 999px; padding: 12px;
  color: #fff; font-weight: 700; border-bottom: none;
  background: linear-gradient(135deg, #f5a55c, #e89148 55%, #d77a2e);
}

@media (max-width: 900px) {
  .nav-links { display: none; }
  .nav-toggle { display: grid; }
}

/* ============ Hero ============ */
.hero { padding: 108px 0 96px; text-align: center; align-items: center; }
.hero--compact { padding: 78px 0 62px; }

.badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 7px 16px; border-radius: 999px; font-size: 13px; font-weight: 600;
  color: var(--brand-light);
  background: linear-gradient(135deg, rgba(232, 145, 72, 0.22), rgba(255, 255, 255, 0.08));
  border: 1px solid rgba(232, 145, 72, 0.3);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.12);
  margin-bottom: 26px;
}
.badge .dot {
  width: 7px; height: 7px; border-radius: 50%; background: #22c55e;
  box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.6); animation: pulse 1.8s ease-out infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.55); }
  70% { box-shadow: 0 0 0 7px rgba(34, 197, 94, 0); }
  100% { box-shadow: 0 0 0 0 rgba(34, 197, 94, 0); }
}

.hero h1 {
  font-size: clamp(32px, 5.6vw, 58px);
  font-weight: 900; line-height: 1.14; letter-spacing: -0.01em;
  margin-bottom: 22px; max-width: 16em;
}
.hero h1 .em {
  background: linear-gradient(135deg, #fbbf24 0%, #fb923c 45%, #e89148 100%);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 0 36px rgba(251, 146, 60, 0.4));
}
.hero p.lead {
  font-size: clamp(16px, 2.1vw, 19.5px);
  color: var(--text-sub);
  max-width: 700px; margin: 0 auto 38px;
}
.hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ============ 按钮 ============ */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  padding: 15px 34px; border-radius: 999px; font-size: 16px; font-weight: 700;
  cursor: pointer; transition: transform 0.25s, box-shadow 0.25s, filter 0.25s;
  border: 1px solid transparent; white-space: nowrap; font-family: inherit;
}
.btn-primary {
  color: #fff; position: relative; overflow: hidden;
  background: linear-gradient(135deg, #f5a55c 0%, #e89148 55%, #d77a2e 100%);
  box-shadow: 0 12px 34px -8px rgba(232, 145, 72, 0.7);
}
.btn-primary::after {
  content: ''; position: absolute; top: 0; left: -120%;
  width: 45%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.45), transparent);
  animation: shine 3s infinite;
}
@keyframes shine { 0% { left: -120%; } 60%, 100% { left: 220%; } }
.btn-primary:hover { transform: translateY(-2px); filter: brightness(1.06); }
.btn-ghost { color: var(--text); background: rgba(255, 255, 255, 0.08); border-color: var(--border); }
.btn-ghost:hover { transform: translateY(-2px); border-color: rgba(232, 145, 72, 0.5); color: var(--brand-light); }
.btn-sm { padding: 10px 22px; font-size: 14.5px; }
.btn[disabled] { opacity: .55; cursor: not-allowed; transform: none; }
.btn-block { width: 100%; }

.powered {
  display: inline-flex; align-items: center; gap: 8px; margin-top: 30px;
  padding: 7px 16px; border-radius: 999px; font-size: 12.5px; color: var(--text-sub);
  background: linear-gradient(135deg, rgba(232, 145, 72, 0.18), rgba(255, 255, 255, 0.08));
  border: 1px solid rgba(232, 145, 72, 0.28);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.1);
}
.powered b {
  background: linear-gradient(135deg, #fb923c, #fbbf24);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}

/* ============ 信任条 ============ */
.hero-stats {
  display: inline-flex; flex-wrap: wrap; justify-content: center;
  gap: 4px; margin-top: 44px; padding: 6px; border-radius: 20px;
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.14), rgba(255, 255, 255, 0.06));
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 12px 40px -18px rgba(0, 0, 0, 0.6), inset 0 1px 0 rgba(255, 255, 255, 0.14);
}
.hero-stats .stat {
  display: flex; flex-direction: column; align-items: center; gap: 3px;
  padding: 14px 28px; border-radius: 14px; transition: background 0.3s ease;
}
.hero-stats .stat:hover { background: rgba(255, 255, 255, 0.06); }
.hero-stats .stat-ico { font-size: 18px; line-height: 1; margin-bottom: 2px; }
.hero-stats .stat b {
  font-size: 25px; font-weight: 900; letter-spacing: -0.01em;
  background: linear-gradient(135deg, #fbbf24, #fb923c 55%, #e89148);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.hero-stats .stat span { font-size: 12.5px; color: var(--text-muted); }
@media (max-width: 640px) {
  .hero-stats { gap: 2px; padding: 4px; }
  .hero-stats .stat { padding: 10px 15px; }
  .hero-stats .stat b { font-size: 21px; }
}

/* ============ 通用卡片 ============ */
.card {
  position: relative; padding: 28px; border-radius: var(--radius);
  /* 卡片底：略提不透明度 + 去 backdrop-filter，视觉几乎一致但滚动不再逐帧重算模糊 */
  background: var(--surface);
  border: 1px solid var(--surface-border);
  box-shadow: 0 8px 32px -16px rgba(0, 0, 0, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.12);
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.35s, box-shadow 0.35s;
  overflow: hidden;
}
.card > * { position: relative; z-index: 1; }
.card:hover {
  transform: translateY(-6px);
  border-color: rgba(232, 145, 72, 0.5);
  box-shadow: 0 26px 56px -20px rgba(232, 145, 72, 0.45), inset 0 1px 0 rgba(255, 255, 255, 0.16);
}
.grid { display: grid; gap: 20px; }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(290px, 1fr)); }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); }

.tag {
  display: inline-block; font-size: 12px; color: var(--brand-light);
  padding: 3px 11px; border-radius: 999px;
  background: rgba(232, 145, 72, 0.1); border: 1px solid rgba(232, 145, 72, 0.2);
}
.tag-row { display: flex; flex-wrap: wrap; gap: 6px; }

/* ============ 编号步骤（交付流程 / 创作流程共用） ============ */
.steps { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); }
.step {
  padding: 24px 16px 20px; border-radius: 16px; text-align: center; position: relative; overflow: hidden;
  background: var(--surface); border: 1px solid var(--surface-border);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.1);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.3s, box-shadow 0.3s;
}
.step::after {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, var(--brand), var(--brand-light));
  transform: scaleX(0); transform-origin: left; transition: transform 0.35s ease;
}
.step:hover { transform: translateY(-4px); border-color: rgba(232, 145, 72, 0.45); box-shadow: 0 18px 40px -22px rgba(232, 145, 72, 0.5); }
.step:hover::after { transform: scaleX(1); }
.step .num {
  font-size: 22px; font-weight: 900; letter-spacing: 0.02em;
  background: linear-gradient(135deg, rgba(251, 191, 36, 0.85), rgba(232, 145, 72, 0.55));
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.step h4 { font-size: 14.5px; font-weight: 700; margin-top: 8px; }
.step small { color: var(--text-muted); font-size: 11.5px; line-height: 1.5; display: block; margin-top: 4px; }

/* ============ 规格表（交付形态 / 周期 / 计费） ============ */
.spec-list { display: flex; flex-direction: column; gap: 10px; margin: 18px 0 0; }
.spec-row { display: flex; justify-content: space-between; gap: 14px; font-size: 13.5px; }
.spec-row dt { color: var(--text-muted); flex-shrink: 0; }
.spec-row dd { color: var(--text); text-align: right; }

/* ============ 能力矩阵：已上线 AI 模块（首页 + /ai-app/ 共用） ============ */
.cap-band {
  border-radius: var(--radius-lg); padding: 34px 30px;
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.07), rgba(255, 255, 255, 0.025));
  border: 1px solid var(--border);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
}
.cap-group + .cap-group { margin-top: 26px; padding-top: 26px; border-top: 1px solid rgba(255, 255, 255, 0.06); }
.cap-group-head { display: flex; align-items: baseline; gap: 10px; margin-bottom: 13px; flex-wrap: wrap; }
.cap-group-head h3 { font-size: 15.5px; font-weight: 800; color: var(--text); }
.cap-group-head span { font-size: 12.5px; color: var(--text-muted); }
.cap-chips { display: flex; flex-wrap: wrap; gap: 7px; }
.cap-chip {
  font-size: 12.5px; padding: 4px 11px; border-radius: 999px; white-space: nowrap;
  color: var(--text-sub); background: rgba(255, 255, 255, 0.045);
  border: 1px solid rgba(255, 255, 255, 0.08);
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}
.cap-chip:hover {
  color: var(--brand-light); border-color: rgba(232, 145, 72, 0.42);
  background: rgba(232, 145, 72, 0.09);
}
.cap-note { margin-top: 24px; font-size: 13px; color: var(--text-muted); line-height: 1.7; }

/* ============ 信任带（技术栈 / 合规 / 工程细节） ============ */
.trust-grid { display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.trust-item { padding: 20px 22px; border-radius: 14px; background: var(--card); border: 1px solid var(--border); }
.trust-item h4 { font-size: 14.5px; font-weight: 800; margin-bottom: 7px; color: var(--text); }
.trust-item p { font-size: 13px; color: var(--text-muted); line-height: 1.65; }

/* ============ CTA / 留资带 ============ */
.cta-band {
  border-radius: var(--radius-lg); padding: 44px 34px; text-align: center;
  background: linear-gradient(160deg, rgba(232, 145, 72, 0.2), rgba(255, 255, 255, 0.05));
  border: 1px solid rgba(232, 145, 72, 0.28);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.14);
}
.cta-band h2 { font-size: clamp(22px, 3.4vw, 31px); font-weight: 900; margin-bottom: 12px; }
.cta-band p { color: var(--text-sub); font-size: 15px; max-width: 560px; margin: 0 auto 26px; }
.cta-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* 窄条：页面之间互相导流 */
.cross-link {
  display: flex; align-items: center; justify-content: space-between; gap: 18px; flex-wrap: wrap;
  margin-top: 56px; padding: 22px 26px; border-radius: var(--radius);
  background: rgba(232, 145, 72, 0.07); border: 1px solid rgba(232, 145, 72, 0.18);
}
.cross-link h4 { font-size: 17px; font-weight: 800; }
.cross-link p { font-size: 14px; color: var(--text-sub); margin-top: 3px; }

/* ============ FAQ ============ */
.faq { display: flex; flex-direction: column; gap: 12px; }
.faq details {
  padding: 18px 22px; border-radius: 14px;
  background: var(--card); border: 1px solid var(--border);
  transition: border-color 0.25s;
}
.faq details[open] { border-color: rgba(232, 145, 72, 0.4); }
.faq summary {
  cursor: pointer; font-weight: 700; font-size: 15.5px; list-style: none;
  display: flex; align-items: center; justify-content: space-between; gap: 14px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: '+'; font-size: 20px; font-weight: 400; color: var(--brand);
  flex-shrink: 0; transition: transform 0.25s;
}
.faq details[open] summary::after { transform: rotate(45deg); }
.faq p { margin-top: 10px; font-size: 14.5px; color: var(--text-sub); line-height: 1.75; }

/* ============ 页脚 ============ */
footer { border-top: 1px solid var(--border); padding: 46px 0 56px; margin-top: 32px; }
.foot { display: flex; flex-wrap: wrap; gap: 28px; justify-content: space-between; align-items: flex-start; }
.foot-brand { max-width: 300px; }
.foot-brand .brand { margin-bottom: 12px; }
.foot-brand p { font-size: 14px; color: var(--text-muted); line-height: 1.7; }
.foot-cols { display: flex; gap: 46px; flex-wrap: wrap; }
.foot-col h5 { font-size: 14px; color: var(--text); margin-bottom: 12px; font-weight: 700; }
.foot-col a { display: block; font-size: 14px; color: var(--text-muted); margin-bottom: 9px; transition: color 0.2s; }
.foot-col a:hover { color: var(--brand-light); }
.copy {
  margin-top: 36px; padding-top: 24px; border-top: 1px solid var(--border);
  text-align: center; font-size: 12.5px; color: var(--text-muted);
}
.copy a { color: var(--text-muted); }
.copy a:hover { color: var(--brand-light); }

/* ============ 入场动效 ============ */
.reveal { opacity: 0; transform: translateY(40px); transition: opacity 0.8s ease, transform 0.8s cubic-bezier(0.16, 1, 0.3, 1); }
.reveal.in { opacity: 1; transform: translateY(0); }
.reveal .sec-head { opacity: 0; transform: translateY(24px); transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.16, 1, 0.3, 1); }
.reveal.in .sec-head { opacity: 1; transform: translateY(0); }

.reveal .card,
.reveal .step,
.reveal .tool-card,
.reveal .feature-card,
.reveal .access-card {
  opacity: 0; transform: translateY(34px) scale(0.98);
  transition: opacity 0.65s ease, transform 0.65s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal.in .card,
.reveal.in .step,
.reveal.in .tool-card,
.reveal.in .feature-card,
.reveal.in .access-card { opacity: 1; transform: translateY(0) scale(1); }

/* 依次延迟，营造错落感（到第 8 项封顶，避免长列表末尾等太久） */
.reveal.in :is(.card, .step, .tool-card, .feature-card, .access-card):nth-child(1)  { transition-delay: 0.06s; }
.reveal.in :is(.card, .step, .tool-card, .feature-card, .access-card):nth-child(2)  { transition-delay: 0.12s; }
.reveal.in :is(.card, .step, .tool-card, .feature-card, .access-card):nth-child(3)  { transition-delay: 0.18s; }
.reveal.in :is(.card, .step, .tool-card, .feature-card, .access-card):nth-child(4)  { transition-delay: 0.24s; }
.reveal.in :is(.card, .step, .tool-card, .feature-card, .access-card):nth-child(5)  { transition-delay: 0.30s; }
.reveal.in :is(.card, .step, .tool-card, .feature-card, .access-card):nth-child(6)  { transition-delay: 0.36s; }
.reveal.in :is(.card, .step, .tool-card, .feature-card, .access-card):nth-child(7)  { transition-delay: 0.42s; }
.reveal.in :is(.card, .step, .tool-card, .feature-card, .access-card):nth-child(n+8) { transition-delay: 0.48s; }

.hero > * { opacity: 0; transform: translateY(28px); animation: heroIn 0.9s cubic-bezier(0.16, 1, 0.3, 1) forwards; }
.hero .badge        { animation-delay: 0.05s; }
.hero h1            { animation-delay: 0.15s; }
.hero p.lead        { animation-delay: 0.28s; }
.hero .hero-actions { animation-delay: 0.40s; }
.hero .powered      { animation-delay: 0.52s; }
.hero .hero-stats   { animation-delay: 0.62s; }
@keyframes heroIn { to { opacity: 1; transform: translateY(0); } }

/* 二维码加载兜底：图片在 → 显示 .qr-img；缺失/加载失败 → JS 摘掉 .has-qr 露出占位框 */
.qr-box {
  width: 188px; height: 188px; border-radius: 18px;
  display: grid; place-items: center; gap: 8px;
  background: rgba(255, 255, 255, 0.04);
  border: 2px dashed rgba(232, 145, 72, 0.45);
  color: var(--text-muted); position: relative; margin: 0 auto;
}
.qr-box .qr-emoji { font-size: 40px; }
.qr-box .qr-tip { font-size: 12.5px; text-align: center; line-height: 1.5; }
.qr-box .qr-soon {
  position: absolute; top: 10px; right: 10px; font-size: 10px; font-weight: 700; color: #fff;
  padding: 2px 9px; border-radius: 999px; background: rgba(232, 145, 72, 0.85);
}
.qr-img {
  width: 188px; height: 188px; border-radius: 18px;
  object-fit: contain; background: #fff; padding: 8px; display: block; margin: 0 auto;
  box-shadow: 0 8px 22px -8px rgba(232, 145, 72, 0.5);
}
.has-qr .qr-box { display: none; }
.qr-img.is-broken { display: none; }

/* ============ 留资表单（首页 + 各业务线页 + /contact 共用，故置于基础层） ============ */
.lead-layout {
  display: grid; gap: 26px; align-items: start;
  grid-template-columns: repeat(auto-fit, minmax(310px, 1fr));
}
.lead-form-wrap, .lead-aside {
  padding: 30px; border-radius: var(--radius-lg);
  background: var(--surface); border: 1px solid var(--surface-border);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.12);
}
.lead-aside { text-align: center; background: linear-gradient(160deg, rgba(232, 145, 72, 0.16), rgba(255, 255, 255, 0.05)); }
.lead-aside h3 { font-size: 19px; font-weight: 800; margin-bottom: 6px; }
.lead-aside p { font-size: 14px; color: var(--text-sub); margin-bottom: 18px; }
.lead-aside .scan-hint { font-size: 12.5px; color: var(--text-muted); margin-top: 14px; }

.form-grid { display: grid; gap: 16px; grid-template-columns: 1fr 1fr; }
.field { display: flex; flex-direction: column; gap: 7px; }
.field-full { grid-column: 1 / -1; }
.field label { font-size: 13.5px; font-weight: 700; color: var(--text-sub); }
.field label .req { color: var(--brand); margin-left: 3px; }
.field input, .field select, .field textarea {
  width: 100%; padding: 12px 14px; border-radius: 12px; font-size: 15px; font-family: inherit;
  color: var(--text); background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border); transition: border-color 0.2s, background 0.2s;
}
.field textarea { resize: vertical; min-height: 118px; line-height: 1.65; }
.field select { appearance: none; cursor: pointer; padding-right: 34px; }
.field input::placeholder, .field textarea::placeholder { color: var(--text-muted); }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: rgba(232, 145, 72, 0.6); background: rgba(255, 255, 255, 0.08);
}
.field .select-wrap { position: relative; }
.field .select-wrap::after {
  content: ''; position: absolute; right: 14px; top: 50%; width: 8px; height: 8px;
  border-right: 2px solid var(--text-muted); border-bottom: 2px solid var(--text-muted);
  transform: translateY(-70%) rotate(45deg); pointer-events: none;
}
.field.has-error input, .field.has-error select, .field.has-error textarea { border-color: #f87171; }
.field-error { font-size: 12.5px; color: #fca5a5; display: none; }
.field.has-error .field-error { display: block; }

/* 蜜罐：视觉上不可达，但保持可聚焦元素不被部分浏览器丢弃 —— 用尺寸与裁切隐藏 */
.hp-field { position: absolute !important; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

.form-foot { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; margin-top: 20px; }
.form-note { font-size: 12.5px; color: var(--text-muted); flex: 1 1 200px; }
.form-status { font-size: 14px; margin-top: 14px; display: none; }
.form-status.is-error { display: block; color: #fca5a5; }
.form-status.is-ok { display: block; color: #86efac; }
.lead-form.is-sent .form-grid, .lead-form.is-sent .form-foot { display: none; }

.promise-list { display: flex; flex-direction: column; gap: 10px; margin-top: 22px; text-align: left; }
.promise-list li { display: flex; gap: 9px; font-size: 13.5px; color: var(--text-sub); }
.promise-list .tick { color: var(--brand); flex-shrink: 0; }

/* ============ 响应式节奏收敛 ============ */
@media (max-width: 760px) {
  .form-grid { grid-template-columns: 1fr; }
  .lead-form-wrap, .lead-aside { padding: 22px 18px; }
}

@media (max-width: 760px) {
  .hero { padding: 80px 0 64px; }
  .hero--compact { padding: 58px 0 46px; }
  section.block { padding: 60px 0; }
  .sec-head { margin-bottom: 32px; }
  .cta-band { padding: 32px 20px; }
  .cap-band { padding: 22px 16px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal, .reveal .sec-head, .reveal .card, .reveal .step,
  .reveal .tool-card, .reveal .feature-card, .reveal .access-card,
  .hero > * { opacity: 1; transform: none; transition: none; animation: none; }
  .fx-glow, .badge .dot, .btn-primary::after { animation: none; }
}