/* WecomBetter 官网 · 收尾区样式（S5 安装 / S6 页尾 CTA+日出 M7 / S7 页脚）
   只用 tokens.css 变量；所有选择器以 .install- / .cta- / .foot- 开头 */

/* ========== S5 安装 ========== */
.install-sec {
  padding: var(--section-pad) 0;
}

.install-title {
  margin: 18px 0 0;
  font-family: var(--font-display);
  font-size: clamp(32px, 4vw, 46px);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.2;
  color: var(--ink);
}

.install-steps {
  margin-top: 48px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.install-card {
  border: 1px solid var(--stroke);
  border-radius: var(--radius-card);
  padding: 32px;
}

.install-num {
  margin: 0;
  font-family: var(--font-display);
  font-size: 40px;
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--ink-3);
}

.install-card-title {
  margin: 20px 0 0;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.install-card-desc {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink-2);
}

.install-card-desc code {
  font-family: var(--font-mono);
  font-size: 13px;
  background: var(--fill);
  border-radius: var(--radius-pill);
  padding: 2px 8px;
  white-space: nowrap;
}

/* 卡 2 微型浏览器窗口示意 */
.install-mini {
  margin-top: 24px;
  border: 1px solid var(--stroke);
  border-radius: 12px;
  background: var(--paper);
  overflow: hidden;
}

.install-mini-bar {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 10px 12px;
  border-bottom: 1px solid var(--stroke);
}

.install-mini-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--stroke);
}

.install-mini-body {
  display: grid;
  justify-items: start;
  gap: 12px;
  padding: 14px 16px 16px;
}

.install-mini-toggle {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 12px;
  color: var(--ink-3);
}

.install-mini-switch {
  position: relative;
  width: 22px;
  height: 13px;
  border-radius: var(--radius-pill);
  background: var(--gold);
}

.install-mini-switch::after {
  content: "";
  position: absolute;
  top: 2px;
  right: 2px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--paper);
}

.install-mini-pill {
  font-size: 12px;
  color: var(--ink-2);
  border: 1px solid var(--stroke);
  border-radius: var(--radius-pill);
  padding: 6px 12px;
  background: var(--paper);
}

/* ========== S6 页尾 CTA + 日出（M7） ========== */
.cta-sec {
  position: relative;
  overflow: hidden;
  min-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--section-pad) 0;
}

/* 外层只负责定位与入场（translate/opacity），避免与脉动 scale 冲突 */
.cta-sun {
  position: absolute;
  left: 50%;
  bottom: -25vh; /* 50vh 高只露上半，像太阳从页面底部升起 */
  width: 120vw;
  height: 50vh;
  margin-left: -60vw;
  transform: translateY(60px);
  opacity: 0.6;
  transition:
    transform var(--dur-hero) var(--ease-swoop),
    opacity var(--dur-hero) var(--ease-swoop);
  pointer-events: none;
}

.cta-sun.is-in {
  transform: translateY(0);
  opacity: 1;
}

/* 内层承载渐变光晕与 8s 极缓慢脉动；透明度衰减模拟 blur，不用 filter */
.cta-sun-core {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: radial-gradient(
    50% 50% at 50% 50%,
    var(--glow) 0%,
    var(--gold) 52%,
    rgba(255, 176, 5, 0.35) 68%,
    rgba(255, 176, 5, 0) 82%
  );
}

.cta-sun.is-in .cta-sun-core {
  animation: cta-sun-pulse 8s ease-in-out 1.2s infinite;
}

@keyframes cta-sun-pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.04); }
}

.cta-inner {
  position: relative;
  z-index: 1;
}

.cta-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(44px, 6vw, 72px);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.15;
  color: var(--ink);
}

.cta-sub {
  margin: 22px 0 0;
  font-size: 18px;
  line-height: 1.7;
  color: var(--ink-2);
}

.cta-btn {
  margin-top: 40px;
}

.cta-note {
  margin: 16px 0 0;
  font-size: 14px;
  line-height: 1.5;
  color: rgba(0, 0, 0, 0.5);
}

/* ========== S7 页脚 ========== */
.foot-sec {
  border-top: 1px solid var(--stroke);
  padding: 48px 0 32px;
  background: var(--paper);
}

.foot-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.foot-head {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-3);
}

.foot-link {
  display: block;
  width: fit-content;
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--ink-2);
  text-decoration: none;
  transition: color var(--dur-hover) ease;
}

.foot-link:hover {
  color: var(--ink);
}

.foot-bottom {
  margin-top: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.foot-brand {
  display: flex;
  align-items: center;
  gap: 8px;
}

.foot-logo {
  display: block;
  width: 20px;
  height: 20px;
  border-radius: 5px;
}

.foot-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
}

.foot-copy {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--ink-3);
}

/* ========== 响应式 ========== */
@media (max-width: 960px) {
  .install-steps {
    grid-template-columns: 1fr;
  }

  .foot-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px 20px;
  }
}

@media (max-width: 640px) {
  .install-sec {
    padding: 80px 0;
  }

  .foot-grid {
    grid-template-columns: 1fr;
  }

  .foot-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
}

/* ========== reduced-motion：日出直接终态，无脉动 ========== */
@media (prefers-reduced-motion: reduce) {
  .cta-sun {
    transform: none;
    opacity: 1;
    transition: none;
  }

  .cta-sun.is-in .cta-sun-core {
    animation: none;
  }
}