/* 一级落地页 · iOS 高级黑紫毛玻璃 —— 复用 styles.css 的 :root token */

.landing {
  background: var(--bg-base);
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

/* 背景层：深色 + 三层柔光（紫色光晕 89%） */
.landing::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(ellipse 900px 700px at 15% 10%, rgba(108, 34, 236, 0.089) 0%, transparent 55%),
    radial-gradient(ellipse 800px 600px at 85% 85%, rgba(91, 33, 182, 0.071) 0%, transparent 55%),
    radial-gradient(ellipse 1400px 900px at 50% 50%, rgba(88, 28, 135, 0.027) 0%, transparent 70%);
  pointer-events: none;
}

/* 背景层：细腻噪点，模拟 iOS 毛玻璃的颗粒感 */
.landing::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    radial-gradient(1px 1px at 20% 30%, rgba(255, 255, 255, 0.015) 0%, transparent 50%),
    radial-gradient(1px 1px at 70% 80%, rgba(255, 255, 255, 0.015) 0%, transparent 50%);
  background-size: 200px 200px, 260px 260px;
  opacity: 0.5;
  pointer-events: none;
}

.landing-page {
  max-width: 1240px;
  margin: 0 auto;
  padding: 32px 32px 88px;
  position: relative;
}

.landing-topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 64px;
}

.landing-nav {
  display: flex;
  gap: 12px;
}

.landing-nav-btn {
  padding: 10px 22px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 500;
  text-decoration: none;
  transition: all 0.25s ease;
  border: 1px solid var(--accent-border);
  background: rgba(124, 58, 237, 0.15);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  color: var(--text-primary);
  letter-spacing: 0.01em;
}
.landing-nav-btn:hover {
  background: rgba(124, 58, 237, 0.25);
  border-color: var(--accent);
}

/* ===== Hero ===== */
.landing-hero {
  margin-bottom: 48px;
  max-width: 760px;
}

.landing-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px;
  border-radius: 999px;
  background: var(--accent-soft);
  border: 1px solid var(--accent-border);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  color: var(--accent);
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 24px;
  letter-spacing: 0.02em;
}
.landing-badge::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

.landing-title {
  font-size: 64px;
  font-weight: 700;
  line-height: 1.05;
  margin: 0 0 20px;
  letter-spacing: -0.03em;
  background: linear-gradient(180deg, #c4c4cc 0%, #a78bfa 70%, #7c3aed 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.landing-subtitle {
  font-size: 17px;
  color: var(--text-secondary);
  margin: 0;
  line-height: 1.6;
  font-weight: 400;
  letter-spacing: 0.01em;
}

/* ===== 决策指南分栏 ===== */
.landing-guide {
  display: grid;
  grid-template-columns: 1fr 440px;
  gap: 24px;
  margin-bottom: 40px;
}

.landing-guide-main,
.landing-guide-list {
  background: var(--bg-card);
  border: 1px solid var(--border);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-md);
}

.landing-guide-main {
  padding: 32px;
  position: relative;
  overflow: hidden;
}
.landing-guide-main::before {
  content: "";
  position: absolute;
  top: -40%;
  right: -20%;
  width: 60%;
  height: 140%;
  background: radial-gradient(circle, var(--accent-soft) 0%, transparent 60%);
  pointer-events: none;
}

.landing-guide-badge {
  display: inline-block;
  padding: 5px 12px;
  border-radius: 999px;
  background: var(--accent-soft);
  border: 1px solid var(--accent-border);
  color: var(--accent);
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 18px;
  letter-spacing: 0.02em;
  position: relative;
}

.landing-guide-title {
  font-size: 24px;
  color: var(--text-primary);
  margin: 0 0 14px;
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: -0.01em;
  position: relative;
}

.landing-guide-desc {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.75;
  margin: 0;
  position: relative;
}

.landing-guide-list {
  padding: 10px 18px;
  list-style: none;
  margin: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.landing-guide-list li {
  display: grid;
  grid-template-columns: 44px 90px 1fr;
  align-items: center;
  gap: 14px;
  padding: 16px 6px;
  border-bottom: 1px solid var(--border);
  transition: background 0.2s;
}
.landing-guide-list li:last-child { border-bottom: none; }
.landing-guide-list li:hover { background: rgba(255, 255, 255, 0.02); border-radius: var(--r-sm); }

.landing-guide-list .idx {
  color: var(--text-muted);
  font-weight: 700;
  font-size: 14px;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.04em;
}

.landing-guide-list .tag {
  font-size: 11px;
  color: var(--text-muted);
  padding: 3px 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  text-align: center;
  letter-spacing: 0.02em;
}

.landing-guide-list strong {
  color: var(--text-primary);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

/* ===== 方案卡片 ===== */
.landing-plans {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.plan-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  backdrop-filter: blur(28px) saturate(180%);
  -webkit-backdrop-filter: blur(28px) saturate(180%);
  border-radius: var(--r-xl);
  padding: 26px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

/* 卡片顶部色晕，体现 iOS 层次 */
.plan-card::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -10%;
  width: 70%;
  height: 100%;
  background: radial-gradient(circle, var(--accent-soft) 0%, transparent 60%);
  opacity: 0.35;
  pointer-events: none;
  transition: opacity 0.3s;
}

.plan-card.plan-1:hover {
  border-color: var(--accent-border);
  transform: translateY(-3px);
  box-shadow: 0 16px 40px rgba(124, 58, 237, 0.15), var(--shadow-md);
}
.plan-card.plan-1:hover::before { opacity: 0.7; }

.plan-card[data-disabled="true"] {
  opacity: 0.55;
  filter: grayscale(0.5);
}
.plan-card[data-disabled="true"]::before { opacity: 0.3; }

.plan-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: var(--text-muted);
  position: relative;
}

.plan-index {
  font-weight: 700;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 10px;
  font-variant-numeric: tabular-nums;
}

.plan-tag {
  padding: 4px 11px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.02em;
  border: 1px solid transparent;
}

.plan-tag.primary { background: var(--accent-soft); color: var(--accent); border-color: var(--accent-border); }
.plan-tag.success { background: var(--success-soft); color: var(--success); border-color: var(--success-border); }
.plan-tag.info { background: var(--info-soft); color: var(--info); border-color: var(--info-border); }

.plan-eta {
  padding: 5px 11px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border);
  font-size: 11px;
  letter-spacing: 0.02em;
  font-variant-numeric: tabular-nums;
}

.plan-card.plan-1 .plan-eta {
  background: var(--accent-soft);
  color: var(--accent);
  border-color: var(--accent-border);
}
.plan-card.plan-2 .plan-eta {
  background: var(--success-soft);
  color: var(--success);
  border-color: var(--success-border);
}
.plan-card.plan-3 .plan-eta {
  background: var(--info-soft);
  color: var(--info);
  border-color: var(--info-border);
}

.plan-title {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
  letter-spacing: -0.02em;
  position: relative;
}

.plan-highlight {
  display: flex;
  gap: 10px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  padding: 14px 16px;
  border-radius: var(--r-md);
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.65;
  margin: 0;
  position: relative;
}

.plan-highlight-icon {
  color: var(--accent);
  font-weight: 700;
  flex-shrink: 0;
  font-size: 14px;
}
.plan-card.plan-2 .plan-highlight-icon { color: var(--success); }
.plan-card.plan-3 .plan-highlight-icon { color: var(--info); }

.plan-section {
  position: relative;
}

.plan-section h4 {
  font-size: 13px;
  color: var(--text-primary);
  margin: 0 0 10px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.plan-section p, .plan-section ul {
  color: var(--text-secondary);
  font-size: 13px;
  line-height: 1.75;
  margin: 0;
  padding-left: 18px;
}

.plan-section p { padding-left: 0; }
.plan-section ul li { margin-bottom: 5px; list-style-type: "· "; padding-left: 4px; }

.plan-alert {
  background: var(--warning-soft);
  border: 1px solid var(--warning-border);
  border-radius: var(--r-md);
  padding: 13px 15px;
  font-size: 12px;
  color: #fde68a;
  line-height: 1.65;
  position: relative;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.plan-alert strong {
  display: block;
  color: var(--warning);
  margin-bottom: 5px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.plan-cta {
  margin-top: auto;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 15px;
  border-radius: var(--r-md);
  font-weight: 600;
  font-size: 14px;
  text-decoration: none;
  transition: all 0.25s ease;
  cursor: pointer;
  border: none;
  letter-spacing: 0.01em;
  position: relative;
}

.plan-cta.primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  box-shadow: var(--shadow-glow);
}
.plan-cta.primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 14px 40px rgba(168, 85, 247, 0.45);
}
.plan-cta.success {
  background: linear-gradient(135deg, var(--success), #10b981);
  color: #fff;
}
.plan-cta.info {
  background: linear-gradient(135deg, var(--info), #3b82f6);
  color: #fff;
}

.plan-cta.disabled {
  cursor: not-allowed;
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-muted);
  pointer-events: none;
  border: 1px solid var(--border);
  box-shadow: none;
}

/* ===== 响应式 ===== */
@media (max-width: 1100px) {
  .landing-title { font-size: 52px; }
  .landing-guide { grid-template-columns: 1fr; }
}

@media (max-width: 820px) {
  .landing-plans { grid-template-columns: 1fr; }
  .landing-title { font-size: 42px; }
}

@media (max-width: 560px) {
  .landing-page { padding: 20px 16px 48px; }
  .landing-topbar { margin-bottom: 36px; }
  .landing-title { font-size: 34px; }
  .landing-subtitle { font-size: 15px; }
  .landing-guide-main { padding: 22px; }
  .landing-guide-list { padding: 4px 14px; }
  .plan-card { padding: 22px; }
  .plan-title { font-size: 20px; }
}