/* ==========================================================================
   CHUCK TAG 产品落地页（page-chuck）
   风格：温柔治愈、自然极简。暖米白 + 鼠尾草绿，大留白、圆角、细线。
   仅本页使用，不影响站点其他页面的深蓝体系。
   ========================================================================== */

.chuck-hero,
.chuck-section,
.chuck-cta {
  --chuck-bg: #fbf8f3;
  --chuck-soft: #f4efe7;
  --chuck-ink: #2f2b27;
  --chuck-body: #57514a;
  --chuck-muted: #8a8279;
  --chuck-sage: #6f8b74;
  --chuck-sage-deep: #4f6b57;
  --chuck-line: #e6ddd0;
}

/* 首屏 ------------------------------------------------------------------- */
.chuck-hero {
  background: var(--chuck-bg);
  padding: 72px 0 64px;
  border-bottom: 1px solid var(--chuck-line);
}
.chuck-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 0.92fr);
  gap: 56px;
  align-items: center;
}
.chuck-kicker {
  margin: 0 0 12px;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--chuck-sage);
}
.chuck-hero h1 {
  margin: 0 0 8px;
  font-size: clamp(2.6rem, 5vw, 3.6rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.05;
  color: var(--chuck-ink);
}
.chuck-sub {
  margin: 0 0 14px;
  font-size: 1.08rem;
  color: var(--chuck-body);
}
.chuck-slogan {
  margin: 0 0 20px;
  font-size: 1.32rem;
  font-weight: 600;
  color: var(--chuck-sage-deep);
  letter-spacing: 0.01em;
}
.chuck-lead {
  margin: 0 0 28px;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--chuck-body);
  max-width: 46ch;
}
.chuck-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.chuck-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 168px;
  padding: 13px 26px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 0.95rem;
  font-weight: 600;
  transition: background-color 0.18s ease, color 0.18s ease, border-color 0.18s ease, transform 0.18s ease;
}
.chuck-btn--primary { background: var(--chuck-sage-deep); color: #fff; }
.chuck-btn--primary:hover { background: var(--chuck-sage); color: #fff; transform: translateY(-1px); }
.chuck-btn--ghost { border-color: var(--chuck-sage); color: var(--chuck-sage-deep); background: transparent; }
.chuck-btn--ghost:hover { background: var(--chuck-sage); border-color: var(--chuck-sage); color: #fff; }
.chuck-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}
.chuck-chips li {
  margin: 0;
  padding: 5px 13px;
  border: 1px solid var(--chuck-line);
  border-radius: 999px;
  background: #fff;
  font-size: 0.78rem;
  color: var(--chuck-body);
}
.chuck-hero-figure { margin: 0; }
.chuck-hero-figure img { width: 100%; height: auto; border-radius: 24px; }
.chuck-hero-figure figcaption { margin-top: 12px; font-size: 0.78rem; color: var(--chuck-muted); }

/* 通用区块 --------------------------------------------------------------- */
.chuck-section { padding: 84px 0; background: #fff; }
.chuck-section--soft { background: var(--chuck-soft); border-top: 1px solid var(--chuck-line); border-bottom: 1px solid var(--chuck-line); }
.chuck-head { max-width: 720px; margin-bottom: 40px; }
.chuck-head h2 {
  margin: 0 0 12px;
  font-size: clamp(1.6rem, 2.6vw, 2.1rem);
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--chuck-ink);
}
.chuck-head p { margin: 0; font-size: 1rem; line-height: 1.85; color: var(--chuck-body); }

.chuck-grid { display: grid; gap: 20px; }
.chuck-grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.chuck-grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.chuck-card {
  padding: 26px 26px 24px;
  border: 1px solid var(--chuck-line);
  border-radius: 18px;
  background: #fff;
  transition: border-color 0.18s ease, transform 0.18s ease;
}
.chuck-card:hover { border-color: var(--chuck-sage); transform: translateY(-2px); }
.chuck-card h3 { margin: 0 0 10px; font-size: 1.05rem; font-weight: 600; color: var(--chuck-ink); }
.chuck-card p { margin: 0; font-size: 0.94rem; line-height: 1.8; color: var(--chuck-body); }
.chuck-card--rule { background: var(--chuck-bg); }
.chuck-card--rule h3::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-right: 9px;
  border-radius: 50%;
  background: var(--chuck-sage);
  vertical-align: middle;
}

.chuck-figure { margin: 44px 0 0; }
.chuck-figure img { width: 100%; height: auto; border-radius: 20px; }
.chuck-figure figcaption { margin-top: 12px; font-size: 0.78rem; color: var(--chuck-muted); }

/* 寻回四步 --------------------------------------------------------------- */
.chuck-steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 22px;
  margin: 0 0 48px;
  padding: 0;
  list-style: none;
}
.chuck-steps li { margin: 0; padding-top: 20px; border-top: 2px solid var(--chuck-sage); }
.chuck-step-no {
  display: block;
  margin-bottom: 10px;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--chuck-sage);
}
.chuck-steps h3 { margin: 0 0 8px; font-size: 1rem; font-weight: 600; color: var(--chuck-ink); }
.chuck-steps p { margin: 0; font-size: 0.92rem; line-height: 1.8; color: var(--chuck-body); }

.chuck-split {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 32px;
  padding-top: 34px;
  border-top: 1px solid var(--chuck-line);
}
.chuck-split h3 { margin: 0 0 12px; font-size: 1.05rem; font-weight: 600; color: var(--chuck-ink); }
.chuck-split p { margin: 0 0 10px; font-size: 0.94rem; line-height: 1.8; color: var(--chuck-body); }
.chuck-split strong { color: var(--chuck-ink); }
.chuck-list { margin: 0; padding-left: 1.1em; font-size: 0.94rem; line-height: 1.85; color: var(--chuck-body); }
.chuck-list li { margin-bottom: 6px; }

/* 纪念模式 --------------------------------------------------------------- */
.chuck-memory {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 48px;
  align-items: center;
}
.chuck-memory figure { margin: 0; }
.chuck-memory img { width: 100%; height: auto; border-radius: 20px; }
.chuck-memory figcaption { margin-top: 12px; font-size: 0.78rem; color: var(--chuck-muted); }
.chuck-memory h2 { margin: 0 0 12px; font-size: clamp(1.55rem, 2.4vw, 1.95rem); font-weight: 600; color: var(--chuck-ink); }
.chuck-memory p { font-size: 0.98rem; line-height: 1.85; color: var(--chuck-body); }
.chuck-note { margin-top: 14px; font-size: 0.84rem; color: var(--chuck-muted); }

/* 型号表 ----------------------------------------------------------------- */
.chuck-table-wrap { overflow-x: auto; border: 1px solid var(--chuck-line); border-radius: 18px; background: #fff; }
.chuck-table { width: 100%; min-width: 720px; border-collapse: collapse; }
.chuck-table th,
.chuck-table td {
  padding: 16px 20px;
  text-align: left;
  font-size: 0.94rem;
  line-height: 1.7;
  color: var(--chuck-body);
  border-bottom: 1px solid var(--chuck-line);
}
.chuck-table th {
  background: var(--chuck-bg);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--chuck-muted);
  white-space: nowrap;
}
.chuck-table tr:last-child td { border-bottom: 0; }
.chuck-table strong { color: var(--chuck-ink); }

/* FAQ ------------------------------------------------------------------- */
.chuck-faq details {
  border-bottom: 1px solid var(--chuck-line);
  padding: 18px 0;
}
.chuck-faq summary {
  cursor: pointer;
  font-size: 1rem;
  font-weight: 600;
  color: var(--chuck-ink);
  list-style: none;
  display: flex;
  justify-content: space-between;
  gap: 16px;
}
.chuck-faq summary::-webkit-details-marker { display: none; }
.chuck-faq summary::after {
  content: "+";
  font-weight: 400;
  color: var(--chuck-sage);
  font-size: 1.2rem;
  line-height: 1;
}
.chuck-faq details[open] summary::after { content: "−"; }
.chuck-faq details > div { padding-top: 12px; }
.chuck-faq p { margin: 0; font-size: 0.95rem; line-height: 1.85; color: var(--chuck-body); }

/* 底部 CTA --------------------------------------------------------------- */
.chuck-cta { background: var(--chuck-sage-deep); padding: 64px 0; }
.chuck-cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}
.chuck-cta h2 { margin: 0 0 10px; font-size: clamp(1.5rem, 2.4vw, 1.95rem); color: #fff; }
.chuck-cta p { margin: 0; max-width: 52ch; font-size: 0.96rem; line-height: 1.85; color: rgba(255, 255, 255, 0.82); }
.chuck-cta-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.chuck-cta .chuck-btn--primary { background: #fff; color: var(--chuck-sage-deep); }
.chuck-cta .chuck-btn--primary:hover { background: var(--chuck-bg); color: var(--chuck-sage-deep); }
.chuck-cta .chuck-btn--ghost { border-color: rgba(255, 255, 255, 0.6); color: #fff; }
.chuck-cta .chuck-btn--ghost:hover { background: #fff; border-color: #fff; color: var(--chuck-sage-deep); }

/* 响应式 ----------------------------------------------------------------- */
@media (max-width: 1024px) {
  .chuck-hero-grid, .chuck-memory { grid-template-columns: 1fr; gap: 36px; }
  .chuck-grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .chuck-steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 700px) {
  .chuck-hero { padding: 48px 0 44px; }
  .chuck-section { padding: 56px 0; }
  .chuck-grid--3, .chuck-grid--2, .chuck-steps, .chuck-split { grid-template-columns: 1fr; }
  .chuck-btn { min-width: 0; width: 100%; }
  .chuck-cta { padding: 48px 0; }
  .chuck-cta-actions { width: 100%; }
}