/* ── 落地页专属样式（landing.html） ──
 * 复用 base.css 的 CSS 变量与 .app-header 顶栏，仅补落地页自身区块。
 */
body { background: #FAF9F5; }

.lp-header-right { display: flex; align-items: center; gap: 12px; margin-left: auto; }

/* 通用容器与区块头 */
.lp-wrap { max-width: 1160px; margin: 0 auto; padding: 0 40px; }
.lp-section-head { text-align: center; margin-bottom: 48px; }
.lp-eyebrow {
  display: inline-block;
  font-size: 12px; font-weight: 700; letter-spacing: 2.4px;
  color: var(--primary); background: #E8F0FB;
  padding: 7px 18px; border-radius: 24px; margin-bottom: 16px;
}
.lp-section-title {
  font-size: 32px; font-weight: 900;
  letter-spacing: -0.8px; line-height: 1.25; margin: 0 0 12px;
}
.lp-section-desc { font-size: 15.5px; color: var(--text2); max-width: 620px; margin: 0 auto; }

/* ── HERO（Anthropic 浅色编辑风：居中布局不变，仅背景与字色） ── */
.lp-hero {
  position: relative; overflow: hidden;
  color: #141413;
  background: #faf9f5;
  padding: 88px 0 96px;
}
.lp-hero::after { display: none; }
.lp-hero-inner {
  position: relative; z-index: 1;
  display: flex; flex-direction: column; align-items: center; text-align: center;
}
.lp-hero-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  background: #f0eee6; border: 1px solid #cccbc8;
  padding: 7px 18px; border-radius: 20px;
  font-size: 12px; font-weight: 700; letter-spacing: 0.8px;
  color: #87867f; margin-bottom: 26px;
}
.lp-hero-title {
  font-size: 54px; font-weight: 900; line-height: 1.18;
  letter-spacing: -1.8px; margin: 0 0 20px; max-width: 900px;
  color: #141413;
}
.lp-hero-title em {
  font-style: normal;
  color: var(--primary);
  text-decoration: underline;
  text-decoration-color: rgba(26, 61, 107, 0.35);
  text-decoration-thickness: 2px;
  text-underline-offset: 6px;
}
.lp-hero-sub {
  font-size: 17px; color: #5e5d59;
  line-height: 1.8; margin: 0 0 38px; max-width: 660px;
}
.lp-hero-actions {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  width: 100%;
  margin-bottom: 30px;
  gap: 24px 32px;
}
.lp-hero-actions-nav {
  grid-column: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}
.lp-hero-trial {
  grid-column: 3;
  justify-self: end;
}
.lp-hero .lp-btn-trial {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  border: none;
  font-size: 15px;
  font-weight: 700;
  padding: 16px 28px;
  border-radius: 11px;
  white-space: nowrap;
  box-shadow: 0 6px 22px rgba(232, 168, 56, 0.4);
  transition: background .22s, box-shadow .22s;
}
.lp-hero .lp-btn-trial:hover {
  background: #D4962E;
  color: #fff;
  box-shadow: 0 10px 32px rgba(232, 168, 56, 0.5);
}
.lp-hero .lp-btn-ghost {
  background: #faf9f5; border: 1.5px solid #87867f;
  color: #141413; font-size: 15px; font-weight: 600;
  padding: 16px 28px; border-radius: 11px; white-space: nowrap;
  transition: background .2s, border-color .2s, color .2s;
}
.lp-hero .lp-btn-ghost:hover {
  background: #f0eee6; border-color: #141413; color: #141413;
}

/* ── 产品特点 ── */
.lp-features { background: #FAF9F5; padding: 84px 0; scroll-margin-top: 72px; }
.lp-feat-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.lp-feat-card {
  background: #F0EEE6; border: 1px solid var(--border);
  border-radius: var(--radius); padding: 34px 32px; box-shadow: var(--shadow-sm);
  transition: transform .25s, box-shadow .25s, border-color .25s;
}
.lp-feat-card:hover {
  transform: translateY(-5px); box-shadow: var(--shadow-lg);
  border-color: rgba(26, 61, 107, 0.2);
}
.lp-feat-icon {
  width: 54px; height: 54px; border-radius: 13px;
  display: flex; align-items: center; justify-content: center; margin-bottom: 20px;
}
.lp-icon-blue { background: #E8F0FB; }
.lp-icon-amber { background: #FEF4E2; }
.lp-icon-green { background: var(--green-bg); }
.lp-icon-purple { background: #EDE9FE; }
.lp-feat-title { font-size: 20px; font-weight: 800; letter-spacing: -0.3px; margin-bottom: 10px; }
.lp-feat-desc { font-size: 14.5px; color: var(--text2); line-height: 1.72; margin-bottom: 18px; }
.lp-points { display: flex; flex-direction: column; gap: 9px; }
.lp-point { display: flex; align-items: flex-start; gap: 9px; font-size: 13.5px; color: var(--text2); }
.lp-point::before { content: '✓'; color: var(--green); font-weight: 900; font-size: 14px; flex-shrink: 0; }

/* ── 使用流程 ── */
.lp-steps { background: #FAF9F5; padding: 80px 0; scroll-margin-top: 72px; }
.lp-steps-grid { position: relative; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); }
.lp-steps-grid::before {
  content: ''; position: absolute; top: 38px; left: 16%; right: 16%; height: 2px;
  background: linear-gradient(90deg, var(--border), var(--primary-l), var(--border));
}
.lp-step {
  position: relative; display: flex; flex-direction: column;
  align-items: center; gap: 16px; padding: 0 32px; text-align: center;
}
.lp-step-num {
  width: 76px; height: 76px; background: var(--primary); color: #fff;
  border-radius: 50%; display: flex; align-items: center; justify-content: center;
  font-size: 28px; font-weight: 900; box-shadow: 0 6px 20px rgba(26, 61, 107, 0.32);
}
.lp-step-title { font-size: 18px; font-weight: 700; }
.lp-step-desc { font-size: 14px; color: var(--text2); line-height: 1.75; }

/* STEP 内：生成任务说明 */
.lp-steps .lp-notice-card {
  margin-top: 56px;
  background: #F0EEE6;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 32px;
}
.lp-notice-title { font-size: 15px; font-weight: 800; margin-bottom: 14px; }
.lp-notice-grid {
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px;
  font-size: 13px; color: var(--text2); line-height: 1.75;
}
.lp-notice-sub { font-weight: 700; color: var(--text); margin-bottom: 6px; }

/* ── 产品对比（价目卡样式） ── */
.lp-lineup { background: #FAF9F5; padding: 84px 0; border-top: 1px solid var(--border); scroll-margin-top: 72px; }
.lp-plans { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px; align-items: start; }
.lp-plan {
  position: relative; display: flex; flex-direction: column;
  border-radius: 16px; padding: 36px 34px 34px;
}
.lp-plan-now,
.lp-plan-soon {
  background: #F0EEE6; border: 2px solid var(--accent);
  box-shadow: 0 12px 48px rgba(232, 168, 56, 0.16);
}
.lp-plan-kicker { font-size: 13px; font-weight: 700; letter-spacing: 1.4px; margin-bottom: 8px; }
.lp-kicker-now { color: #B08326; }
.lp-kicker-soon { color: var(--primary-l); }
.lp-plan-name { font-size: 26px; font-weight: 900; letter-spacing: -0.6px; margin-bottom: 10px; }
.lp-plan-lede { font-size: 14.5px; color: var(--text2); line-height: 1.75; margin-bottom: 22px; }
.lp-plan-price {
  display: flex; align-items: baseline; gap: 10px;
  padding-bottom: 22px; border-bottom: 1px solid var(--border); margin-bottom: 22px;
}
.lp-price-main { font-size: 34px; font-weight: 900; letter-spacing: -1px; color: var(--text); }
.lp-price-note { font-size: 13.5px; color: #6B7280; }
.lp-plan-target {
  font-size: 12.5px; font-weight: 700; color: var(--text3);
  letter-spacing: 0.6px; margin-bottom: 14px;
}
.lp-plan-list { display: flex; flex-direction: column; gap: 11px; font-size: 14px; color: #374151; }
.lp-plan-group {
  font-size: 12px; font-weight: 700; color: var(--text3); letter-spacing: 0.6px;
}
.lp-plan-group + .lp-plan-item { margin-top: -2px; }
.lp-plan-item { display: flex; align-items: flex-start; gap: 10px; }
.lp-plan-item::before { content: '✓'; font-weight: 900; flex-shrink: 0; }
.lp-plan-now .lp-plan-item::before { color: var(--green); }
.lp-plan-soon .lp-plan-item::before { color: var(--primary); }
.lp-plan-foot { padding-top: 28px; }
.lp-plan-btn {
  display: block; text-align: center; font-size: 17px; font-weight: 700;
  padding: 16px 0; border-radius: 11px;
}
.lp-plan-btn-primary {
  background: var(--accent); color: #fff; box-shadow: 0 6px 22px rgba(232, 168, 56, 0.4);
  transition: background .22s, box-shadow .22s;
}
.lp-plan-btn-primary:hover { background: #D4962E; box-shadow: 0 10px 32px rgba(232, 168, 56, 0.5); }

/* ── 页脚 ── */
.lp-footer { background: #0A1C31; padding: 30px 0; text-align: center; }
.lp-footer p { font-size: 13px; color: rgba(255, 255, 255, 0.45); }

/* ── 响应式 ── */
@media (max-width: 900px) {
  .lp-wrap { padding: 0 24px; }
  .lp-hero { padding: 64px 0 72px; }
  .lp-hero-title { font-size: 34px; letter-spacing: -1px; }
  .lp-hero-sub { font-size: 15.5px; }
  .lp-hero-actions {
    grid-template-columns: 1fr;
    justify-items: center;
    gap: 20px;
  }
  .lp-hero-actions-nav {
    grid-column: 1;
    justify-content: center;
  }
  .lp-hero-trial {
    grid-column: 1;
    justify-self: center;
  }
  .lp-feat-grid { grid-template-columns: 1fr; }
  .lp-steps-grid { grid-template-columns: 1fr; gap: 40px; }
  .lp-steps-grid::before { display: none; }
  .lp-step { padding: 0; }
  .lp-section-title { font-size: 26px; }
  .lp-notice-grid { grid-template-columns: 1fr; gap: 20px; }
  .lp-plans { grid-template-columns: 1fr; gap: 36px; }
}