/* ============================================================
   乔克叔叔 Uncle Joker — 企业官网样式
   设计系统：深色主题 + 橙色品牌
   ============================================================ */

:root {
  /* 品牌色 */
  --c-primary: #f97316;
  --c-primary-deep: #ea580c;
  --c-primary-light: #fb923c;
  --c-accent: #fbbf24;

  /* 深色背景 */
  --c-bg: #0b0f19;
  --c-bg-elevated: #111827;
  --c-bg-card: rgba(255, 255, 255, 0.05);
  --c-bg-card-hover: rgba(255, 255, 255, 0.08);
  --c-border: rgba(255, 255, 255, 0.1);

  /* 文字 */
  --c-ink: #f8fafc;
  --c-body: #cbd5e1;
  --c-muted: #94a3b8;

  /* 语义 */
  --c-success: #22c55e;
  --c-error: #ef4444;

  /* 排版 */
  --font-sans: "PingFang SC", "Microsoft YaHei", system-ui, -apple-system,
    "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  /* 间距 / 圆角 / 阴影 */
  --container: 1200px;
  --radius: 18px;
  --radius-sm: 12px;
  --shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
  --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.2);
  --header-h: 76px;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: var(--header-h); }
body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--c-body);
  background: var(--c-bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4 { color: var(--c-ink); line-height: 1.25; margin: 0 0 .5em; font-weight: 700; }
p { margin: 0 0 1em; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul, ol { margin: 0; padding: 0; list-style: none; }
button { font-family: inherit; cursor: pointer; }

.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 24px; }

/* ---------- 焦点可见（无障碍） ---------- */
:focus-visible {
  outline: 3px solid var(--c-primary-light);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ---------- 通用 ---------- */
.section { padding: 100px 0; }
.section-soft { background: var(--c-bg-elevated); }

.section-head { text-align: center; max-width: 760px; margin: 0 auto 64px; }
.section-head h2 { font-size: clamp(28px, 4vw, 40px); margin-bottom: 18px; }
.section-head .lead { color: var(--c-muted); font-size: 18px; }

.eyebrow {
  display: inline-block;
  padding: 16px 44px;
  border-radius: 8px;
  background: rgba(249, 115, 22, 0.14);
  color: var(--c-primary-light);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 26px;
}

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity .7s var(--ease), transform .7s var(--ease);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 8px; padding: 15px 30px; border-radius: 999px;
  font-size: 16px; font-weight: 700; border: 1px solid transparent;
  transition: transform .2s var(--ease), box-shadow .2s var(--ease), background .2s;
  white-space: nowrap;
}
.btn-primary {
  background: linear-gradient(120deg, var(--c-primary), var(--c-primary-deep));
  color: #fff; box-shadow: 0 10px 28px rgba(249, 115, 22, .35);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 16px 36px rgba(249, 115, 22, .45); }
.btn-ghost { background: rgba(255,255,255,.08); color: var(--c-ink); border-color: rgba(255,255,255,.2); }
.btn-ghost:hover { background: rgba(255,255,255,.14); border-color: rgba(255,255,255,.35); }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  height: var(--header-h);
  background: rgba(11, 15, 25, .82);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: box-shadow .25s, border-color .25s;
}
.site-header.scrolled { box-shadow: var(--shadow-sm); border-color: var(--c-border); }
.nav-wrap { height: 100%; display: flex; align-items: center; justify-content: space-between; }

.brand { display: inline-flex; align-items: center; gap: 12px; }
.brand-logo-img { width: 44px; height: 44px; border-radius: 10px; object-fit: contain; background: #fff; padding: 3px; }
.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-text strong { color: var(--c-ink); font-size: 17px; }
.brand-text em { color: var(--c-primary-light); font-style: normal; font-size: 11px; letter-spacing: 1.5px; text-transform: uppercase; }

.main-nav { display: flex; align-items: center; gap: 8px; }
.main-nav a {
  padding: 9px 15px; border-radius: 8px; color: var(--c-body);
  font-weight: 500; font-size: 15px; transition: background .2s, color .2s;
}
.main-nav a:hover { background: rgba(255,255,255,.07); color: var(--c-ink); }
.lang-toggle {
  margin-left: 8px; padding: 8px 16px; border-radius: 999px;
  border: 1px solid var(--c-border); background: rgba(255,255,255,.05); color: var(--c-primary-light);
  font-weight: 700; font-size: 13px; transition: background .2s, border-color .2s;
}
.lang-toggle:hover { background: rgba(249, 115, 22, .12); border-color: var(--c-primary); }

.nav-toggle {
  display: none; flex-direction: column; gap: 5px; width: 44px; height: 44px;
  border: 1px solid var(--c-border); border-radius: 10px; background: rgba(255,255,255,.05);
  align-items: center; justify-content: center;
}
.nav-toggle span { width: 20px; height: 2px; background: var(--c-ink); border-radius: 2px; transition: .25s var(--ease); }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  position: relative; min-height: 700px; height: calc(100dvh - var(--header-h));
  max-height: 860px; overflow: hidden;
  display: flex; align-items: center;
  background: radial-gradient(ellipse at top right, rgba(249, 115, 22, .18), transparent 55%),
              radial-gradient(ellipse at bottom left, rgba(234, 88, 12, .12), transparent 45%),
              var(--c-bg);
}
.hero-bg {
  position: absolute; inset: 0; pointer-events: none;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23f97316' fill-opacity='0.04'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  opacity: .6;
}
.hero-content {
  position: relative; z-index: 1;
  display: grid; grid-template-columns: 1.1fr .9fr; gap: 60px; align-items: center;
}
.hero-text .eyebrow { margin-bottom: 22px; }
.hero h1 { font-size: clamp(34px, 5vw, 58px); line-height: 1.15; margin-bottom: 24px; }
.hero h1 span { color: var(--c-primary-light); }
.hero-lead { font-size: 18px; color: var(--c-muted); max-width: 560px; margin-bottom: 32px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 40px; }
.hero-badges { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-badges li {
  padding: 8px 16px; border-radius: 999px;
  background: rgba(255,255,255,.06); border: 1px solid var(--c-border);
  font-size: 14px; color: var(--c-body);
}

.hero-visual { position: relative; height: 380px; }
.hero-card {
  position: absolute; padding: 17px 22px; border-radius: var(--radius);
  background: var(--c-bg-card); border: 1px solid var(--c-border);
  backdrop-filter: blur(10px); box-shadow: var(--shadow);
  min-width: 175px;
}
.hero-card strong { display: block; color: var(--c-ink); font-size: 17px; margin-bottom: 4px; }
.hero-card span { color: var(--c-primary-light); font-weight: 700; font-size: 13.5px; }
.hero-card-1 { top: 13%; left: 2%; transform: rotate(-4deg); }
.hero-card-2 { top: 49%; right: 3%; transform: rotate(3deg); }
.hero-card-3 { bottom: 5%; left: 10%; transform: rotate(-2deg); border-color: rgba(249, 115, 22, .35); }
.hero-card-new {
  top: 0; right: 0; transform: rotate(4deg);
  padding: 26px 30px; min-width: 265px;
  border-color: rgba(249, 115, 22, .55);
  background: linear-gradient(135deg, rgba(249, 115, 22, .16), var(--c-bg-card) 65%);
  box-shadow: 0 14px 36px rgba(249, 115, 22, .22);
}
.hero-card-new strong { font-size: 24px; margin-bottom: 7px; }
.hero-card-new span { font-size: 17px; }

.hero-scroll {
  position: absolute; bottom: 30px; left: 50%; transform: translateX(-50%);
  width: 26px; height: 40px; border: 2px solid rgba(255,255,255,.25); border-radius: 13px;
  display: flex; justify-content: center; padding-top: 8px;
}
.hero-scroll-dot { width: 4px; height: 8px; background: var(--c-primary); border-radius: 2px; animation: scrollBounce 1.6s infinite; }
@keyframes scrollBounce { 0%, 100% { transform: translateY(0); opacity: 1; } 50% { transform: translateY(8px); opacity: .4; } }

/* ---------- About ---------- */
.about-grid {
  display: grid; grid-template-columns: 1.2fr .8fr; gap: 48px; margin-bottom: 64px;
}
.about-text p { font-size: 17px; color: var(--c-body); margin-bottom: 18px; }
.vision-card {
  padding: 36px; border-radius: var(--radius);
  background: linear-gradient(135deg, rgba(249, 115, 22, .12), rgba(251, 191, 36, .06));
  border: 1px solid rgba(249, 115, 22, .2);
}
.vision-card h3 { color: var(--c-primary-light); font-size: 16px; margin-bottom: 8px; }
.vision-card h3:not(:first-child) { margin-top: 28px; }
.vision-card p { color: var(--c-body); margin: 0; }

.values { margin-bottom: 64px; text-align: center; }
.values h3 { margin-bottom: 24px; font-size: 24px; }
.values ul {
  display: flex; justify-content: center; flex-wrap: wrap; gap: 14px;
}
.values li {
  padding: 12px 22px; border-radius: 999px;
  background: var(--c-bg-card); border: 1px solid var(--c-border);
  color: var(--c-ink); font-weight: 600;
}

.stats {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
}
.stats li {
  padding: 32px 20px; border-radius: var(--radius);
  background: var(--c-bg-card); border: 1px solid var(--c-border); text-align: center;
}
.stats strong { display: block; color: var(--c-primary-light); font-size: 38px; font-weight: 800; line-height: 1; margin-bottom: 10px; }
.stats span { color: var(--c-muted); font-size: 15px; }

/* ---------- Products ---------- */
.product-timeline {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; margin-bottom: 80px;
}
.product-card {
  position: relative; padding: 40px 32px;
  border-radius: var(--radius);
  background: var(--c-bg-card); border: 1px solid var(--c-border);
  transition: transform .3s var(--ease), background .3s, border-color .3s;
}
.product-card:hover { transform: translateY(-6px); background: var(--c-bg-card-hover); border-color: rgba(249, 115, 22, .3); }
.product-card.featured {
  background: linear-gradient(135deg, rgba(249, 115, 22, .12), rgba(17, 24, 39, 1));
  border-color: rgba(249, 115, 22, .4);
}
.product-step {
  position: absolute; top: 24px; right: 24px;
  font-size: 40px; font-weight: 800; color: rgba(255,255,255,.06); line-height: 1;
}
.product-icon { font-size: 38px; margin-bottom: 18px; }
.product-card h3 { font-size: 22px; margin-bottom: 6px; }
.product-subtitle { color: var(--c-primary-light); font-weight: 600; font-size: 15px; margin-bottom: 20px; }
.product-features { margin-bottom: 24px; }
.product-features li {
  position: relative; padding-left: 20px; margin-bottom: 10px; color: var(--c-body); font-size: 15px;
}
.product-features li::before {
  content: ""; position: absolute; left: 0; top: 10px;
  width: 7px; height: 7px; border-radius: 50%; background: var(--c-primary);
}
.product-price {
  display: inline-block; padding: 10px 18px; border-radius: 999px;
  background: rgba(249, 115, 22, .15); color: var(--c-primary-light);
  font-weight: 700; font-size: 15px;
}

.process h3 { text-align: center; font-size: 28px; margin-bottom: 48px; }
.process ol {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; counter-reset: step;
}
.process li {
  position: relative; padding: 32px; border-radius: var(--radius);
  background: var(--c-bg-card); border: 1px solid var(--c-border);
}
.process-num {
  display: grid; place-items: center;
  width: 44px; height: 44px; border-radius: 50%;
  background: linear-gradient(135deg, var(--c-primary), var(--c-primary-deep));
  color: #fff; font-weight: 800; font-size: 18px;
  margin-bottom: 20px;
}
.process h4 { font-size: 18px; margin-bottom: 8px; }
.process p { color: var(--c-muted); font-size: 14px; margin: 0; }

/* ---------- Cases ---------- */
.case-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px;
}
.case-card {
  padding: 34px; border-radius: var(--radius);
  background: var(--c-bg-card); border: 1px solid var(--c-border);
  transition: transform .3s var(--ease), border-color .3s;
}
.case-card:hover { transform: translateY(-5px); border-color: rgba(249, 115, 22, .3); }
.case-tag {
  display: inline-block; padding: 5px 12px; border-radius: 999px;
  background: rgba(249, 115, 22, .12); color: var(--c-primary-light);
  font-size: 12px; font-weight: 700; margin-bottom: 16px;
}
.case-card h3 { font-size: 20px; margin-bottom: 14px; }
.case-card p { color: var(--c-body); font-size: 15px; margin-bottom: 20px; }
.case-metrics { display: flex; flex-wrap: wrap; gap: 12px; }
.case-metrics span {
  padding: 8px 14px; border-radius: 8px;
  background: rgba(255,255,255,.06); color: var(--c-muted); font-size: 13px;
}
.case-metrics strong { color: var(--c-primary-light); }

/* ---------- Testimonials ---------- */
.testimonial-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px;
}
.testimonial-card {
  padding: 32px; border-radius: var(--radius);
  background: var(--c-bg-card); border: 1px solid var(--c-border);
}
.testimonial-card p { color: var(--c-body); font-size: 16px; margin-bottom: 22px; font-style: italic; }
.testimonial-author strong { display: block; color: var(--c-ink); font-size: 15px; }
.testimonial-author span { color: var(--c-muted); font-size: 13px; }
.stars { color: var(--c-accent); margin-bottom: 16px; letter-spacing: 2px; }

/* ---------- Contact ---------- */
.contact-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: start;
}
.contact-info h2 { font-size: 32px; margin-bottom: 16px; }
.contact-info .lead { color: var(--c-muted); margin-bottom: 36px; }
.contact-meta { margin-bottom: 36px; }
.contact-meta li {
  display: flex; align-items: baseline; gap: 14px; padding: 14px 0;
  border-bottom: 1px solid var(--c-border);
}
.contact-meta li:last-child { border-bottom: 0; }
.cm-label { min-width: 80px; color: var(--c-muted); font-size: 14px; }
.contact-meta a { color: var(--c-ink); font-weight: 600; font-size: 17px; }
.contact-meta a:hover { color: var(--c-primary-light); }
.contact-meta small { color: var(--c-muted); margin-left: 8px; }

.qr-block { margin-top: 28px; }
.qr-card {
  display: inline-flex; flex-direction: column; align-items: center;
  padding: 20px 22px 22px; border-radius: 18px;
  background: #ffffff;
  border: 1.5px solid rgba(249, 115, 22, .22);
  box-shadow: 0 16px 40px rgba(15, 23, 42, .18);
  position: relative; overflow: hidden;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease);
}
.qr-card::before {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(249,115,22,.08), transparent 40%);
  pointer-events: none;
}
.qr-card:hover { transform: translateY(-3px); box-shadow: 0 22px 50px rgba(15, 23, 42, .24); }
.qr-card-head {
  position: relative; display: flex; align-items: center; gap: 10px;
  padding-bottom: 14px; margin-bottom: 14px; width: 100%;
  border-bottom: 1px dashed rgba(249, 115, 22, .25);
}
.qr-badge {
  display: inline-block; padding: 4px 10px; border-radius: 999px;
  font-size: 11px; font-weight: 800; letter-spacing: 1.5px;
  color: #fff; background: linear-gradient(135deg, #f97316, #ef4444);
}
.qr-card-head strong { color: var(--c-ink); font-size: 16px; letter-spacing: .5px; }
.qr-img-wrap {
  position: relative; padding: 10px; background: #fff; border-radius: 14px;
  border: 1px solid var(--c-border);
  display: inline-block;
}
.qr-img { display: block; width: 168px; height: 168px; border-radius: 6px; }
.qr-corner { position: absolute; width: 16px; height: 16px; border-color: #f97316; border-style: solid; border-width: 0; }
.qr-corner.tl { top: 0; left: 0; border-top-width: 3px; border-left-width: 3px; border-radius: 4px 0 0 0; }
.qr-corner.tr { top: 0; right: 0; border-top-width: 3px; border-right-width: 3px; border-radius: 0 4px 0 0; }
.qr-corner.bl { bottom: 0; left: 0; border-bottom-width: 3px; border-left-width: 3px; border-radius: 0 0 0 4px; }
.qr-corner.br { bottom: 0; right: 0; border-bottom-width: 3px; border-right-width: 3px; border-radius: 0 0 4px 0; }
.qr-line1 { position: relative; margin: 14px 0 2px; font-size: 12px; color: var(--c-muted); letter-spacing: 2px; }
.qr-line2 { position: relative; margin: 0 0 10px; font-size: 18px; font-weight: 800; color: #f97316; letter-spacing: .5px; }
.qr-line3 { position: relative; margin: 0; font-size: 12px; color: var(--c-muted); }

.contact-info .highlight { color: var(--c-primary-light); font-weight: 700; font-size: 17px; }

.email-list { display: flex; flex-direction: column; gap: 4px; }
.email-list a { color: var(--c-ink); font-weight: 600; font-size: 15px; }
.email-list a:hover { color: var(--c-primary-light); }

.social-block { margin-bottom: 36px; }
.social-block h4 { color: var(--c-ink); font-size: 18px; margin-bottom: 16px; }
.social-flex { display: flex; align-items: center; gap: 24px; }
.social-flex .social-list { flex: 1; }
.qr-mini {
  display: flex; flex-direction: column; align-items: center; gap: 7px;
  flex-shrink: 0;
}
.qr-mini img {
  width: 86px; height: 86px; border-radius: 10px;
  background: #fff; padding: 4px;
  border: 1px solid rgba(249, 115, 22, .3);
  box-shadow: 0 8px 20px rgba(15, 23, 42, .16);
}
.qr-mini span { font-size: 11px; color: var(--c-muted); letter-spacing: .5px; }
.social-list li {
  display: flex; align-items: baseline; gap: 14px; padding: 10px 0;
  border-bottom: 1px solid var(--c-border); font-size: 15px;
}
.social-list li:last-child { border-bottom: 0; }
.social-name { min-width: 64px; color: var(--c-muted); font-size: 14px; }
.social-list span:last-child { color: var(--c-ink); font-weight: 600; }

.contact-form {
  padding: 42px; border-radius: var(--radius);
  background: var(--c-bg-card); border: 1px solid var(--c-border);
}
.contact-form h3 { font-size: 22px; margin-bottom: 28px; }
.field { margin-bottom: 20px; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.field label { display: block; margin-bottom: 8px; color: var(--c-ink); font-size: 14px; font-weight: 600; }
.field input,
.field textarea {
  width: 100%; padding: 14px 16px; border-radius: var(--radius-sm);
  background: rgba(0,0,0,.25); border: 1px solid var(--c-border);
  color: var(--c-ink); font-size: 15px; transition: border-color .2s, box-shadow .2s;
}
.field input::placeholder,
.field textarea::placeholder { color: var(--c-muted); }
.field input:focus,
.field textarea:focus { border-color: var(--c-primary); box-shadow: 0 0 0 3px rgba(249, 115, 22, .15); outline: none; }
.field .err { display: none; color: var(--c-error); font-size: 13px; margin-top: 6px; }
.field.invalid input,
.field.invalid textarea { border-color: var(--c-error); }
.field.invalid .err { display: block; }
.contact-form .btn-primary { width: 100%; margin-top: 8px; }
.form-success { color: var(--c-success); font-weight: 600; margin-top: 16px; }
.form-success[hidden] { display: none; }
.form-success-link { display: inline-block; margin-top: 8px; color: var(--c-primary-light); text-decoration: underline; font-weight: 700; }
.form-success-link:hover { color: var(--c-accent); }
.form-hint { margin: 10px 0 0; font-size: 13px; color: var(--c-muted); }

/* ---------- AI Enterprise ---------- */
.section-ai {
  background:
    radial-gradient(ellipse at top left, rgba(249, 115, 22, .10), transparent 45%),
    radial-gradient(ellipse at bottom right, rgba(234, 88, 12, .08), transparent 40%),
    var(--c-bg-elevated);
}
.ai-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; margin-bottom: 80px;
}
.ai-card {
  padding: 38px 32px; border-radius: var(--radius);
  background: var(--c-bg-card); border: 1px solid var(--c-border);
  transition: transform .3s var(--ease), border-color .3s, background .3s;
}
.ai-card:hover {
  transform: translateY(-6px); background: var(--c-bg-card-hover); border-color: rgba(249, 115, 22, .35);
}
.ai-icon { font-size: 42px; margin-bottom: 18px; }
.ai-card h3 { font-size: 20px; margin-bottom: 12px; }
.ai-card > p { color: var(--c-body); font-size: 15px; margin-bottom: 20px; }
.ai-features { margin-top: 18px; }
.ai-features li {
  position: relative; padding-left: 18px; margin-bottom: 9px;
  color: var(--c-muted); font-size: 14px;
}
.ai-features li::before {
  content: ""; position: absolute; left: 0; top: 9px;
  width: 6px; height: 6px; border-radius: 50%; background: var(--c-primary-light);
}

.ai-framework {
  padding: 48px; border-radius: var(--radius);
  background: linear-gradient(135deg, rgba(249, 115, 22, .08), rgba(17, 24, 39, .85));
  border: 1px solid rgba(249, 115, 22, .2);
}
.framework-head { text-align: center; max-width: 780px; margin: 0 auto 40px; }
.framework-head h3 { font-size: 28px; margin-bottom: 14px; }
.framework-head p { color: var(--c-body); font-size: 16px; }
.framework-img-wrap {
  border-radius: var(--radius-sm); overflow: hidden;
  background: #fff; padding: 16px; margin-bottom: 44px;
  box-shadow: var(--shadow);
}
.framework-img-wrap img { width: 100%; height: auto; border-radius: 8px; }

.framework-deconstruct h4 { font-size: 22px; margin-bottom: 28px; text-align: center; }
.deconstruct-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
}
.d-item {
  padding: 26px; border-radius: var(--radius-sm);
  background: rgba(0,0,0,.22); border: 1px solid var(--c-border);
}
.d-item strong { display: block; color: var(--c-primary-light); font-size: 16px; margin-bottom: 10px; }
.d-item p { color: var(--c-muted); font-size: 14px; margin: 0; line-height: 1.6; }

/* ---------- Footer ---------- */
.site-footer { padding: 18px 0 10px; background: #080b14; border-top: 1px solid var(--c-border); }
.footer-grid {
  display: grid; grid-template-columns: 1fr auto 1fr; gap: 8px 32px;
  align-items: center;
}
.footer-brand { justify-self: start; text-align: left; }
.footer-brand p { color: var(--c-muted); margin-top: 4px; max-width: 280px; }
.footer-contact { display: flex; flex-direction: column; gap: 2px; justify-self: end; text-align: right; }
.footer-contact a { color: var(--c-ink); font-weight: 600; }
.footer-contact a:hover { color: var(--c-primary-light); }
.footer-contact span { color: var(--c-muted); font-size: 14px; }
.footer-nav {
  justify-self: center;
  display: flex; flex-direction: row; justify-content: center;
  gap: 6px 32px; flex-wrap: wrap;
  margin-top: 0;
}
.footer-nav a { color: var(--c-body); font-size: 14px; }
.footer-copy {
  grid-column: 1 / -1; text-align: center; color: var(--c-muted); font-size: 13px;
  border-top: 1px solid var(--c-border); padding-top: 10px; margin-top: 10px;
}
.footer-beian {
  grid-column: 1 / -1;
  text-align: center;
  color: var(--c-muted);
  font-size: 13px;
  margin: 6px 0 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 12px;
  line-height: 1.8;
}
.footer-beian a {
  color: var(--c-muted);
  transition: color .2s var(--ease);
  display: inline-flex;
  align-items: center;
}
.footer-beian a:hover { color: var(--c-primary-light); }
.footer-beian .beian-sep { color: rgba(148, 163, 184, .35); user-select: none; }
.footer-beian .beian-mps em { font-style: normal; font-family: "SF Mono", Consolas, Monaco, monospace; letter-spacing: .3px; }
.footer-beian .beian-shield { width: 14px; height: 14px; margin-right: 5px; color: #2563eb; vertical-align: -2px; }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .hero-content { grid-template-columns: 1fr; text-align: center; }
  .hero-text { order: 1; }
  .hero-visual { order: 0; height: 280px; margin-bottom: 30px; }
  .hero-lead { margin-left: auto; margin-right: auto; }
  .hero-actions { justify-content: center; }
  .hero-badges { justify-content: center; }

  .about-grid { grid-template-columns: 1fr; }
  .product-timeline { grid-template-columns: 1fr; }
  .ai-grid { grid-template-columns: 1fr; }
  .process ol { grid-template-columns: repeat(2, 1fr); }
  .case-grid { grid-template-columns: repeat(2, 1fr); }
  .testimonial-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; gap: 48px; }
  .deconstruct-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  :root { --header-h: 68px; }
  .section { padding: 72px 0; }
  .main-nav {
    position: fixed; top: var(--header-h); left: 0; right: 0;
    flex-direction: column; align-items: stretch;
    background: rgba(11, 15, 25, .98); border-bottom: 1px solid var(--c-border);
    padding: 16px 24px 24px; gap: 4px;
    transform: translateY(-120%); opacity: 0; visibility: hidden;
    transition: transform .3s var(--ease), opacity .3s, visibility .3s;
  }
  .main-nav.open { transform: translateY(0); opacity: 1; visibility: visible; }
  .main-nav a { padding: 14px; font-size: 16px; }
  .lang-toggle { margin: 12px 0 0; width: 100%; }
  .nav-toggle { display: flex; }

  .stats { grid-template-columns: repeat(2, 1fr); }
  .process ol { grid-template-columns: 1fr; }
  .case-grid { grid-template-columns: 1fr; }
  .testimonial-grid { grid-template-columns: 1fr; }
  .deconstruct-grid { grid-template-columns: 1fr; }
  .ai-framework { padding: 28px; }
  .footer-grid { grid-template-columns: 1fr; text-align: center; }
  .footer-brand p { margin: 14px auto 0; }
  .footer-nav { align-items: center; }
  .footer-contact { align-items: center; }

  .hero-card { min-width: 160px; padding: 18px; }
  .hero-card strong { font-size: 15px; }
  .hero-card span { font-size: 13px; }
}

/* ============================================================
   自助工具 Tools
   ============================================================ */
.nav-tools {
  color: var(--c-primary-light) !important;
  border: 1px solid rgba(249, 115, 22, .35);
  background: rgba(249, 115, 22, .10);
  font-weight: 700;
}
.nav-tools:hover { background: rgba(249, 115, 22, .18); color: #fff !important; }

/* AI 面试助手 —— 导航第一项，实心主色醒目按钮 */
.nav-ai-interview {
  color: #fff !important;
  background: #f97316;
  border-radius: 999px;
  padding: 8px 18px;
  font-weight: 700;
  margin-right: 4px;
  transition: background .2s, transform .2s;
}
.nav-ai-interview:hover { background: #fb923c; color: #fff !important; transform: translateY(-1px); }

/* AI 智能报价 —— 导航入口，蓝色胶囊与面试助手并列 */
.nav-ai-quoting {
  color: #fff !important;
  background: #2563eb;
  border-radius: 999px;
  padding: 8px 18px;
  font-weight: 700;
  margin-right: 4px;
  transition: background .2s, transform .2s;
}
.nav-ai-quoting:hover { background: #3b82f6; color: #fff !important; transform: translateY(-1px); }

/* AI 面试助手 —— 首页推荐位横幅卡 */
.ai-card-cta {
  grid-column: 1 / -1;
  display: flex; align-items: center; gap: 28px;
  border-color: rgba(249, 115, 22, .45);
  background:
    radial-gradient(ellipse at left top, rgba(249, 115, 22, .12), transparent 60%),
    var(--c-bg-card);
}
.ai-card-cta .ai-icon { font-size: 44px; margin: 0; flex-shrink: 0; }
.ai-card-cta .cta-body { flex: 1; }
.ai-card-cta h3 { margin-bottom: 8px; }
.ai-card-cta .btn { flex-shrink: 0; white-space: nowrap; }
@media (max-width: 860px) {
  .ai-card-cta { flex-direction: column; align-items: flex-start; gap: 16px; }
}

.section-tools {
  background:
    radial-gradient(ellipse at top right, rgba(249, 115, 22, .10), transparent 45%),
    var(--c-bg);
}
.tools-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
}
.tool-card {
  display: flex; flex-direction: column; align-items: flex-start;
  padding: 32px 28px; border-radius: var(--radius);
  background: var(--c-bg-card); border: 1px solid var(--c-border);
  transition: transform .3s var(--ease), border-color .3s, background .3s;
}
.tool-card:hover { transform: translateY(-6px); background: var(--c-bg-card-hover); border-color: rgba(249, 115, 22, .35); }
.tool-icon { font-size: 40px; margin-bottom: 16px; }
.tool-card h3 { font-size: 19px; margin-bottom: 10px; }
.tool-desc { color: var(--c-body); font-size: 14px; margin-bottom: 18px; flex: 1; }
.tool-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 22px; }
.tool-tags li {
  padding: 5px 12px; border-radius: 999px; font-size: 12px;
  background: rgba(255,255,255,.06); color: var(--c-muted); border: 1px solid var(--c-border);
}
.tool-start { width: 100%; }

/* ---------- Modal ---------- */
.tool-modal-overlay {
  position: fixed; inset: 0; z-index: 1000;
  display: flex; align-items: flex-start; justify-content: center;
  padding: 40px 20px; overflow-y: auto;
  background: rgba(4, 7, 14, .72); backdrop-filter: blur(6px);
  opacity: 0; visibility: hidden; transition: opacity .25s, visibility .25s;
}
.tool-modal-overlay.open { opacity: 1; visibility: visible; }
.tool-modal {
  position: relative; width: 100%; max-width: 720px; margin: auto;
  background: var(--c-bg-elevated); border: 1px solid var(--c-border);
  border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 36px; max-height: 88vh; overflow-y: auto;
}
.tool-modal-close {
  position: absolute; top: 16px; right: 18px; z-index: 2;
  width: 38px; height: 38px; border-radius: 50%; font-size: 24px; line-height: 1;
  background: rgba(255,255,255,.06); border: 1px solid var(--c-border); color: var(--c-ink);
  transition: background .2s;
}
.tool-modal-close:hover { background: rgba(249, 115, 22, .2); }

.tool-head { display: flex; gap: 16px; align-items: center; margin-bottom: 22px; padding-right: 40px; }
.tool-head-icon { font-size: 38px; }
.tool-head-title { font-size: 22px; margin: 0 0 4px; }
.tool-head-sub { color: var(--c-muted); font-size: 14px; margin: 0; }

/* ---------- Quiz ---------- */
.quiz-progress { height: 6px; border-radius: 999px; background: rgba(255,255,255,.08); margin-bottom: 24px; overflow: hidden; }
.quiz-progress-bar { height: 100%; width: 0; border-radius: 999px; background: linear-gradient(90deg, var(--c-primary), var(--c-primary-deep)); transition: width .3s var(--ease); }
.quiz-q { margin-bottom: 26px; }
.quiz-q-text { font-size: 16px; color: var(--c-ink); font-weight: 600; margin-bottom: 14px; }
.quiz-q-no {
  display: inline-grid; place-items: center; width: 24px; height: 24px; margin-right: 10px;
  border-radius: 50%; background: rgba(249,115,22,.15); color: var(--c-primary-light);
  font-size: 13px; font-weight: 800; vertical-align: middle;
}
.quiz-options { display: flex; flex-direction: column; gap: 10px; }
.quiz-opt {
  text-align: left; padding: 13px 16px; border-radius: var(--radius-sm);
  background: rgba(0,0,0,.22); border: 1px solid var(--c-border); color: var(--c-body);
  font-size: 15px; transition: border-color .2s, background .2s, color .2s;
}
.quiz-opt:hover { border-color: rgba(249,115,22,.4); color: var(--c-ink); }
.quiz-opt.selected { background: rgba(249, 115, 22, .16); border-color: var(--c-primary); color: #fff; font-weight: 600; }

/* ---------- Calc ---------- */
.calc-form { display: grid; gap: 18px; margin-bottom: 8px; }
.calc-input {
  width: 100%; padding: 13px 15px; border-radius: var(--radius-sm);
  background: rgba(0,0,0,.25); border: 1px solid var(--c-border); color: var(--c-ink); font-size: 15px;
}
.calc-input:focus { border-color: var(--c-primary); box-shadow: 0 0 0 3px rgba(249, 115, 22, .15); outline: none; }

/* ---------- Actions ---------- */
.tool-actions { display: flex; gap: 12px; margin-top: 26px; }
.tool-actions .btn { flex: 1; }
.tool-actions-col { flex-direction: column; }
.tool-actions-col .btn { width: 100%; }

/* ---------- Result ---------- */
.result-head {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 22px 24px; border-radius: var(--radius-sm); margin-bottom: 24px;
  border: 1px solid var(--c-border);
}
.result-good { background: linear-gradient(135deg, rgba(34,197,94,.16), rgba(17,24,39,.6)); border-color: rgba(34,197,94,.35); }
.result-warn { background: linear-gradient(135deg, rgba(251,191,36,.16), rgba(17,24,39,.6)); border-color: rgba(251,191,36,.35); }
.result-bad  { background: linear-gradient(135deg, rgba(239,68,68,.16), rgba(17,24,39,.6)); border-color: rgba(239,68,68,.35); }
.result-badge { font-size: 13px; font-weight: 800; letter-spacing: .5px; color: var(--c-muted); text-transform: uppercase; }
.result-score { font-size: 24px; font-weight: 800; color: var(--c-ink); text-align: right; }
.result-good .result-score { color: #4ade80; }
.result-warn .result-score { color: var(--c-accent); }
.result-bad  .result-score { color: #f87171; }

.result-bars { display: grid; gap: 12px; margin-bottom: 22px; }
.result-bar-row { display: grid; grid-template-columns: 130px 1fr 36px; align-items: center; gap: 12px; }
.result-bar-name { color: var(--c-body); font-size: 14px; }
.result-bar-track { height: 10px; border-radius: 999px; background: rgba(255,255,255,.08); overflow: hidden; }
.result-bar-fill { display: block; height: 100%; border-radius: 999px; background: linear-gradient(90deg, var(--c-primary), var(--c-primary-deep)); }
.result-bar-val { color: var(--c-muted); font-size: 13px; text-align: right; }

.result-summary { display: grid; gap: 8px; margin: 0 0 22px; }
.result-summary li { padding: 12px 16px; border-radius: var(--radius-sm); background: rgba(0,0,0,.22); border: 1px solid var(--c-border); color: var(--c-ink); font-size: 15px; }

.result-flags { margin-bottom: 22px; }
.result-flags h4, .result-advice h4 { font-size: 16px; color: var(--c-primary-light); margin-bottom: 12px; }
.result-flags ul { display: grid; gap: 8px; }
.result-flags li { padding: 10px 14px; border-radius: var(--radius-sm); background: rgba(239,68,68,.10); border: 1px solid rgba(239,68,68,.25); color: var(--c-body); font-size: 14px; }

.result-advice { margin-bottom: 22px; }
.result-advice p { padding: 14px 16px; border-radius: var(--radius-sm); background: rgba(249,115,22,.10); border: 1px solid rgba(249,115,22,.22); color: var(--c-body); font-size: 15px; margin: 0 0 10px; }

.result-raw { margin-bottom: 18px; }
.result-raw summary { cursor: pointer; color: var(--c-primary-light); font-size: 14px; font-weight: 600; }
.result-textarea {
  width: 100%; height: 160px; margin-top: 12px; padding: 14px;
  border-radius: var(--radius-sm); background: rgba(0,0,0,.3); border: 1px solid var(--c-border);
  color: var(--c-body); font-size: 13px; line-height: 1.6; font-family: ui-monospace, Menlo, Consolas, monospace;
  resize: vertical;
}
.result-tip { margin: 4px 0 0; padding: 12px 14px; border-radius: var(--radius-sm); background: rgba(34,197,94,.12); border: 1px solid rgba(34,197,94,.3); color: #86efac; font-size: 14px; }

/* ---------- Featured tool card ---------- */
.tool-card.featured {
  border-color: rgba(249, 115, 22, .45);
  background: linear-gradient(160deg, rgba(249,115,22,.10), var(--c-bg-card) 55%);
  box-shadow: 0 14px 40px rgba(249,115,22,.12);
}
.tool-flag {
  position: absolute; top: 14px; right: 14px;
  padding: 4px 10px; border-radius: 999px;
  font-size: 12px; font-weight: 700; letter-spacing: .3px;
  color: #fff; background: linear-gradient(90deg, var(--c-primary), var(--c-primary-deep));
  box-shadow: 0 4px 12px rgba(249,115,22,.3);
}

/* ---------- Optional field label ---------- */
.field-opt {
  font-size: 11px; font-weight: 600; padding: 2px 8px; margin-left: 6px;
  border-radius: 999px; color: var(--c-muted);
  background: rgba(255,255,255,.06); border: 1px solid var(--c-border);
}

/* ---------- Combo steps (两步式成本+合规) ---------- */
.combo-steps { display: flex; gap: 10px; margin-bottom: 18px; }
.combo-step {
  flex: 1; text-align: center; padding: 9px 6px; border-radius: var(--radius-sm);
  font-size: 13px; font-weight: 600; color: var(--c-muted);
  background: rgba(255,255,255,.05); border: 1px solid var(--c-border);
}
.combo-step.on { color: #fff; background: linear-gradient(90deg, var(--c-primary), var(--c-primary-deep)); border-color: transparent; }
.combo-step.done { color: var(--c-primary-light); border-color: rgba(249,115,22,.35); }
.combo-lead { color: var(--c-body); font-size: 14px; margin-bottom: 18px; }

/* ---------- Cost compare (成本对比双栏) ---------- */
.cost-compare { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-bottom: 14px; }
.cost-box { padding: 18px 16px; border-radius: var(--radius); border: 1px solid var(--c-border); text-align: center; }
.cost-old { background: rgba(239,68,68,.08); border-color: rgba(239,68,68,.25); }
.cost-new { background: rgba(34,197,94,.08); border-color: rgba(34,197,94,.25); }
.cost-t { display: block; font-size: 13px; color: var(--c-muted); margin-bottom: 8px; }
.cost-n { display: block; font-size: 26px; font-weight: 800; color: var(--c-ink); line-height: 1.2; }
.cost-old .cost-n { color: #f87171; }
.cost-new .cost-n { color: #4ade80; }
.cost-s { display: block; font-size: 12px; color: var(--c-muted); margin-top: 8px; line-height: 1.5; }
.cost-save { margin: 0 0 22px; font-size: 15px; color: var(--c-body); }
.cost-save b { color: #4ade80; font-size: 19px; }

/* ---------- Checklist (合规自查) ---------- */
.chk-list { display: grid; gap: 14px; margin: 12px 0 22px; }
.chk-item { padding: 16px; border-radius: var(--radius-sm); background: rgba(0,0,0,.22); border: 1px solid var(--c-border); }
.chk-q { display: flex; gap: 10px; align-items: flex-start; font-size: 15px; color: var(--c-ink); font-weight: 600; margin: 0; }
.chk-no { flex: 0 0 22px; width: 22px; height: 22px; line-height: 22px; text-align: center; border-radius: 999px; background: rgba(249,115,22,.18); color: var(--c-primary-light); font-size: 12px; font-weight: 700; }
.chk-opts { display: flex; gap: 10px; margin-top: 12px; }
.chk-opt { flex: 1; padding: 9px; border-radius: var(--radius-sm); border: 1px solid var(--c-border); background: rgba(255,255,255,.04); color: var(--c-body); font-size: 14px; cursor: pointer; transition: all .2s var(--ease); }
.chk-opt:hover { border-color: rgba(249,115,22,.4); }
.chk-opt.yes.selected { background: rgba(34,197,94,.16); border-color: #4ade80; color: #86efac; font-weight: 600; }
.chk-opt.no.selected { background: rgba(239,68,68,.16); border-color: #f87171; color: #fca5a5; font-weight: 600; }
.chk-risk { margin: 10px 0 0; color: #fca5a5; font-size: 13px; line-height: 1.5; }

/* ---------- Lead form (结果页留资提交) ---------- */
.lead-form { margin-top: 26px; padding: 22px; border-radius: var(--radius); background: rgba(249,115,22,.06); border: 1px solid rgba(249,115,22,.22); }
.lead-form h4 { margin: 0 0 16px; font-size: 16px; color: var(--c-ink); }
.lead-fields { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 14px; }
.lead-fields input { width: 100%; padding: 11px 13px; border-radius: var(--radius-sm); background: rgba(0,0,0,.28); border: 1px solid var(--c-border); color: var(--c-ink); font-size: 14px; box-sizing: border-box; }
.lead-fields input::placeholder { color: var(--c-muted); }
.lead-fields input:focus { border-color: var(--c-primary); box-shadow: 0 0 0 3px rgba(249,115,22,.15); outline: none; }
.lead-submit { width: 100%; }
.lead-tip { margin: 12px 0 0; padding: 12px 14px; border-radius: var(--radius-sm); font-size: 14px; line-height: 1.5; }
.lead-tip.ok { background: rgba(34,197,94,.12); border: 1px solid rgba(34,197,94,.3); color: #86efac; }
.lead-tip.err { background: rgba(239,68,68,.12); border: 1px solid rgba(239,68,68,.3); color: #fca5a5; }
.lead-tip.warn { background: rgba(251,191,36,.12); border: 1px solid rgba(251,191,36,.3); color: #fcd34d; }
.lead-tip a { color: inherit; text-decoration: underline; }

/* ---------- Tools responsive ---------- */
@media (max-width: 1024px) {
  .tools-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .tools-grid { grid-template-columns: 1fr; }
  .tool-modal { padding: 26px 20px; }
  .tool-actions { flex-direction: column; }
  .result-bar-row { grid-template-columns: 96px 1fr 30px; }
  .result-head { flex-direction: column; align-items: flex-start; }
  .result-score { text-align: left; }
  .cost-compare { grid-template-columns: 1fr; }
  .lead-fields { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
}