/* ============================================================
   product-fakao.css — 中创法考快查产品页
   内容口径：以 ~/zsk/sifa/版本更新记录 与产品截图为事实源
   主题：深藏青 + 金色（呼应小程序内金色口诀卡片）
   依赖：css/style.css 的设计变量与通用类
   ============================================================ */

:root {
  --fk-gold: #d3ab63;
  --fk-gold-bright: #eecd8d;
  --fk-gold-deep: #a67f3c;
  --fk-navy: #16265c;
  --fk-navy-deep: #0c1637;
  --fk-gold-glow: rgba(211, 171, 99, 0.3);
  --fk-gold-bg: rgba(211, 171, 99, 0.07);
}

/* ---------- Hero ---------- */
.fk-hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding: 120px 0 80px;
  background: radial-gradient(120% 90% at 80% 0%, rgba(22, 38, 92, 0.55) 0%, transparent 60%),
              radial-gradient(80% 60% at 10% 100%, rgba(211, 171, 99, 0.08) 0%, transparent 55%);
}

.fk-hero .particle-canvas {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.fk-hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 64px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.fk-badge {
  display: inline-block;
  padding: 6px 16px;
  border: 1px solid var(--fk-gold-glow);
  border-radius: 999px;
  font-size: 0.8125rem;
  color: var(--fk-gold-bright);
  letter-spacing: 0.1em;
  margin-bottom: 24px;
  background: var(--fk-gold-bg);
}

.fk-hero-title {
  font-size: clamp(2.25rem, 1.5rem + 3.5vw, 4rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.fk-hero-slogan {
  font-size: clamp(1.5rem, 1.1rem + 2vw, 2.5rem);
  font-weight: 700;
  margin-bottom: 20px;
  background: linear-gradient(120deg, var(--fk-gold-bright), var(--fk-gold-deep));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.fk-hero-desc {
  color: var(--text-secondary);
  font-size: 1.0625rem;
  max-width: 480px;
  margin-bottom: 36px;
}

.fk-hero-visual {
  position: relative;
  max-width: 380px;
  margin-left: auto;
  border-radius: 28px;
  overflow: hidden;
  border: 1px solid rgba(211, 171, 99, 0.25);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.6), 0 0 60px rgba(211, 171, 99, 0.14);
  transform: perspective(1200px) rotateY(-6deg);
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.fk-hero-visual:hover {
  transform: perspective(1200px) rotateY(0deg);
}

.fk-hero-visual img {
  display: block;
  width: 100%;
  height: auto;
}

/* Hero CTA 按钮：金色主按钮（覆盖 style.css 的红色，仅本页） */
.fk-hero .btn-primary,
.fk-cta .btn-primary {
  background: linear-gradient(135deg, var(--fk-gold), var(--fk-gold-deep));
  border-color: transparent;
  color: #1a1206;
}

.fk-hero .btn-primary:hover,
.fk-cta .btn-primary:hover {
  box-shadow: 0 8px 30px rgba(211, 171, 99, 0.35);
}

/* ---------- 数据带（本页 5 项 + 金色数字） ---------- */
.stats-grid {
  grid-template-columns: repeat(5, 1fr);
  gap: 24px;
}

.stat-number {
  background: linear-gradient(135deg, #fff, var(--fk-gold));
  -webkit-background-clip: text;
  background-clip: text;
}

.stat-suffix {
  color: var(--fk-gold);
}

.stat-item {
  white-space: nowrap;
}

.stat-label {
  white-space: normal;
}

/* ---------- 通用图文分栏 ---------- */
.fk-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.fk-split.reverse > .fk-split-visual {
  order: 2;
}

.fk-split-visual {
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  box-shadow: 0 16px 60px rgba(0, 0, 0, 0.5);
  max-width: 420px;
}

.fk-split.reverse .fk-split-visual {
  margin-left: auto;
}

.fk-split-visual img {
  display: block;
  width: 100%;
  height: auto;
  transition: transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.fk-split-visual:hover img {
  transform: scale(1.03);
}

.fk-split-body h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.fk-split-body p {
  color: var(--text-secondary);
  margin-bottom: 16px;
}

/* ---------- 痛点卡片 ---------- */
.fk-pain-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.fk-pain-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 16px;
  padding: 32px 24px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.fk-pain-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--fk-gold), transparent);
  opacity: 0;
  transition: opacity 0.3s;
}

.fk-pain-card:hover {
  border-color: var(--fk-gold-glow);
  transform: translateY(-4px);
}

.fk-pain-card:hover::before {
  opacity: 1;
}

.fk-pain-num {
  font-size: 0.8125rem;
  color: var(--fk-gold);
  font-weight: 700;
  letter-spacing: 0.15em;
  margin-bottom: 12px;
}

.fk-pain-card h3 {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.fk-pain-card p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
}

/* ---------- 金色口诀卡片（还原小程序内样式） ---------- */
.fk-koujue-card {
  position: relative;
  border-radius: 18px;
  padding: 2px;
  background: linear-gradient(140deg, var(--fk-gold), rgba(211, 171, 99, 0.15) 55%, var(--fk-gold-deep));
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5), 0 0 50px rgba(211, 171, 99, 0.12);
}

.fk-koujue-inner {
  border-radius: 16px;
  padding: 36px 32px;
  background: linear-gradient(160deg, #171226 0%, #100d1c 100%);
}

.fk-koujue-tag {
  display: inline-block;
  padding: 4px 14px;
  border-radius: 999px;
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: var(--fk-gold-bright);
  border: 1px solid var(--fk-gold-glow);
  background: var(--fk-gold-bg);
  margin-bottom: 20px;
}

.fk-koujue-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--fk-gold-bright);
  margin-bottom: 16px;
}

.fk-koujue-verse {
  font-size: 1.0625rem;
  line-height: 2;
  color: #f3e6c8;
  font-weight: 600;
  margin-bottom: 20px;
}

.fk-koujue-meta {
  border-top: 1px dashed rgba(211, 171, 99, 0.3);
  padding-top: 16px;
}

.fk-koujue-technique {
  font-size: 0.8125rem;
  color: var(--fk-gold);
  letter-spacing: 0.08em;
  margin-bottom: 8px;
}

.fk-koujue-explain {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* ---------- 科目 chips ---------- */
.fk-subject-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.fk-chip {
  padding: 10px 20px;
  border-radius: 999px;
  border: 1px solid var(--border-subtle);
  background: var(--bg-surface);
  font-size: 0.9375rem;
  color: var(--text-secondary);
  transition: var(--transition);
}

.fk-chip:hover {
  border-color: var(--fk-gold-glow);
  color: var(--fk-gold-bright);
  background: var(--fk-gold-bg);
}

/* ---------- 计划模板标签 ---------- */
.fk-plan-row {
  display: flex;
  gap: 12px;
  margin-top: 24px;
  flex-wrap: wrap;
}

.fk-plan {
  flex: 1;
  min-width: 92px;
  text-align: center;
  padding: 18px 10px;
  border-radius: 14px;
  border: 1px solid var(--border-subtle);
  background: var(--bg-surface);
  transition: var(--transition);
}

.fk-plan:hover {
  border-color: var(--fk-gold-glow);
  transform: translateY(-3px);
}

.fk-plan strong {
  display: block;
  font-size: 1.375rem;
  color: var(--fk-gold-bright);
  margin-bottom: 2px;
}

.fk-plan span {
  font-size: 0.8125rem;
  color: var(--text-secondary);
}

/* ---------- 激活步骤 ---------- */
.fk-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.fk-step {
  text-align: center;
  padding: 40px 24px;
  border-radius: 16px;
  border: 1px solid var(--border-subtle);
  background: var(--bg-surface);
  transition: var(--transition);
}

.fk-step:hover {
  border-color: var(--fk-gold-glow);
  transform: translateY(-4px);
}

.fk-step-node {
  width: 56px;
  height: 56px;
  margin: 0 auto 20px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--fk-gold-bright);
  border: 1.5px solid var(--fk-gold-glow);
  background: var(--fk-gold-bg);
}

.fk-step h3 {
  font-size: 1.1875rem;
  margin-bottom: 8px;
}

.fk-step p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
}

/* ---------- CTA 收尾 ---------- */
.fk-cta {
  position: relative;
  border-radius: 24px;
  overflow: hidden;
  border: 1px solid var(--fk-gold-glow);
  background: linear-gradient(130deg, var(--fk-navy-deep) 0%, var(--fk-navy) 65%, #1e3169 100%);
}

.fk-cta::before {
  content: '⚖';
  position: absolute;
  right: -30px;
  bottom: -70px;
  font-size: 22rem;
  line-height: 1;
  color: rgba(211, 171, 99, 0.07);
  pointer-events: none;
}

.fk-cta-inner {
  position: relative;
  z-index: 1;
  padding: 96px 64px;
  max-width: 640px;
}

.fk-cta-inner h2 {
  font-size: clamp(1.75rem, 1.3rem + 2vw, 2.75rem);
  font-weight: 800;
  margin-bottom: 16px;
}

.fk-cta-inner > p {
  color: rgba(255, 255, 255, 0.75);
  font-size: 1.0625rem;
  margin-bottom: 36px;
}

.fk-cta-note {
  margin-top: 20px;
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.55);
}

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .fk-pain-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .stats-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .fk-steps {
    grid-template-columns: 1fr;
    max-width: 560px;
    margin-left: auto;
    margin-right: auto;
  }
}

@media (max-width: 900px) {
  .fk-hero-grid,
  .fk-split {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .fk-hero-visual {
    transform: none;
    margin: 0 auto;
  }
  .fk-split.reverse > .fk-split-visual {
    order: 0;
    margin-left: 0;
  }
  .fk-split-visual {
    margin: 0 auto;
  }
  .fk-cta-inner {
    padding: 64px 32px;
  }
  .fk-cta::before {
    font-size: 12rem;
    bottom: -40px;
  }
}

@media (max-width: 640px) {
  .fk-pain-grid {
    grid-template-columns: 1fr;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 28px 16px;
  }
  .stat-item {
    white-space: normal;
  }
  .fk-hero {
    padding-top: 104px;
  }
}