/* ============================================================
   蛋蛋分享库 · 官网介绍页样式
   配色取自 APP Logo：青草绿 + 蛋黄黄 + 蛋白白
   ============================================================ */

:root {
  --green: #8bc34a;
  --green-600: #7cb342;
  --green-700: #689f38;
  --green-800: #558b2f;
  --green-deep: #33691e;
  --yellow: #ffd95a;
  --yellow-deep: #ffca28;
  --ink: #26331a;
  --muted: #68755b;
  --bg: #f6f9ef;
  --card: #ffffff;
  --line: rgba(85, 139, 47, 0.14);
  --shadow-sm: 0 4px 14px rgba(51, 105, 30, 0.08);
  --shadow-md: 0 12px 34px rgba(51, 105, 30, 0.14);
  --shadow-lg: 0 24px 60px rgba(51, 105, 30, 0.2);
  --radius: 18px;
  --nav-h: 72px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.7;
  overflow-x: hidden;
}

img { display: block; max-width: 100%; border: 0; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

.container {
  width: min(1200px, 92%);
  margin: 0 auto;
}
.container-narrow { width: min(860px, 92%); }

section { scroll-margin-top: calc(var(--nav-h) + 12px); }

/* ============ 顶部导航 ============ */
.navbar {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  height: var(--nav-h);
  background: rgba(246, 249, 239, 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  transition: box-shadow 0.3s ease, background 0.3s ease;
}
.navbar.scrolled {
  background: rgba(255, 255, 255, 0.92);
  box-shadow: var(--shadow-sm);
}

.nav-inner {
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

/* Logo 占位容器：填写 img src 后自动显示图片 */
.brand-logo-wrap {
  position: relative;
  width: 46px;
  height: 46px;
  border-radius: 14px;
  overflow: hidden;
  flex-shrink: 0;
  background: linear-gradient(145deg, var(--yellow) 0%, var(--yellow-deep) 70%);
  box-shadow: var(--shadow-sm), inset 0 0 0 2px rgba(255, 255, 255, 0.55);
  display: grid;
  place-items: center;
}
.brand-logo-wrap::after {
  content: "蛋";
  font-size: 22px;
  font-weight: 800;
  color: #6d4c00;
}
.brand-logo {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 1;
}
/* src 留空时隐藏破图，显示底层占位 */
.brand-logo.img-empty { opacity: 0; }

.brand-text { display: flex; flex-direction: column; line-height: 1.25; }
.brand-text strong { font-size: 19px; letter-spacing: 0.5px; color: var(--green-deep); }
.brand-text small { font-size: 12px; color: var(--muted); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 30px;
  font-size: 15.5px;
  font-weight: 600;
}
.nav-links a { position: relative; padding: 6px 0; color: var(--ink); transition: color 0.25s; }
.nav-links a:not(.nav-cta)::after {
  content: "";
  position: absolute;
  left: 0; right: 100%; bottom: 0;
  height: 3px;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--green), var(--yellow-deep));
  transition: right 0.3s ease;
}
.nav-links a:not(.nav-cta):hover { color: var(--green-700); }
.nav-links a:not(.nav-cta):hover::after { right: 0; }

.nav-cta {
  padding: 10px 24px !important;
  border-radius: 999px;
  color: #3d2e00 !important;
  background: linear-gradient(135deg, var(--yellow) 0%, var(--yellow-deep) 100%);
  box-shadow: 0 6px 18px rgba(255, 202, 40, 0.45);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.nav-cta:hover { transform: translateY(-2px); box-shadow: 0 10px 24px rgba(255, 202, 40, 0.55); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: 0;
  cursor: pointer;
  padding: 8px;
}
.nav-toggle span {
  width: 24px; height: 2.5px;
  border-radius: 3px;
  background: var(--green-deep);
  transition: transform 0.3s ease, opacity 0.3s ease;
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }

/* ============ 首屏 Hero ============ */
.hero {
  position: relative;
  padding: calc(var(--nav-h) + 64px) 0 56px;
  background:
    radial-gradient(1100px 520px at 85% -10%, rgba(255, 217, 90, 0.5) 0%, rgba(255, 217, 90, 0) 55%),
    linear-gradient(165deg, #eef7df 0%, var(--bg) 45%, #ffffff 100%);
  overflow: hidden;
}

.hero-decor { position: absolute; inset: 0; pointer-events: none; }
.yolk {
  position: absolute;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, #ffe98a 0%, var(--yellow-deep) 75%);
  box-shadow: 0 20px 50px rgba(255, 202, 40, 0.35);
}
.yolk-1 { width: 150px; height: 150px; top: 16%; right: 6%; opacity: 0.85; animation: float 7s ease-in-out infinite; }
.yolk-2 { width: 64px; height: 64px; bottom: 26%; left: 3%; opacity: 0.6; animation: float 9s ease-in-out infinite reverse; }
.blob {
  position: absolute;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(139, 195, 74, 0.22) 0%, rgba(139, 195, 74, 0) 70%);
}
.blob-1 { width: 480px; height: 480px; top: -160px; left: -140px; }
.blob-2 { width: 620px; height: 620px; bottom: -260px; right: -180px; }

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-18px); }
}

.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  align-items: center;
  gap: 40px;
}

.hero-badges { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 22px; }
.badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 16px;
  border-radius: 999px;
  font-size: 13.5px;
  font-weight: 600;
}
.badge b { font-weight: 800; }
.badge-version {
  color: var(--green-deep);
  background: rgba(139, 195, 74, 0.16);
  border: 1px solid rgba(139, 195, 74, 0.35);
}
.badge-version .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--green-600);
  box-shadow: 0 0 0 4px rgba(124, 179, 66, 0.25);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 3px rgba(124, 179, 66, 0.3); }
  50% { box-shadow: 0 0 0 7px rgba(124, 179, 66, 0.08); }
}
.badge-date {
  color: #6d4c00;
  background: rgba(255, 217, 90, 0.3);
  border: 1px solid rgba(255, 202, 40, 0.5);
}

.hero-text h1 {
  font-size: clamp(38px, 4.6vw, 58px);
  line-height: 1.18;
  font-weight: 800;
  letter-spacing: 1px;
  color: var(--green-deep);
  margin-bottom: 20px;
}
.hero-text h1 .hl {
  position: relative;
  color: var(--green-700);
  white-space: nowrap;
}
.hero-text h1 .hl::after {
  content: "";
  position: absolute;
  left: -2%; right: -2%; bottom: 6%;
  height: 34%;
  z-index: -1;
  border-radius: 6px;
  background: linear-gradient(90deg, var(--yellow), var(--yellow-deep));
}

.hero-desc {
  font-size: 16.5px;
  color: var(--muted);
  max-width: 520px;
  margin-bottom: 30px;
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 30px; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 14px 30px;
  border-radius: 999px;
  font-size: 16px;
  font-weight: 700;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
}
.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--green) 0%, var(--green-700) 100%);
  box-shadow: 0 12px 28px rgba(104, 159, 56, 0.4);
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 18px 36px rgba(104, 159, 56, 0.5); }
.btn-ghost {
  color: var(--green-deep);
  background: rgba(255, 255, 255, 0.75);
  border: 1.5px solid rgba(104, 159, 56, 0.4);
}
.btn-ghost:hover { transform: translateY(-3px); background: #fff; box-shadow: var(--shadow-sm); }

.hero-points {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  color: var(--green-deep);
  font-size: 14.5px;
  font-weight: 600;
}
.hero-points li { display: flex; align-items: center; gap: 7px; }
.hero-points li::before {
  content: "";
  width: 17px; height: 17px;
  border-radius: 50%;
  background: var(--yellow) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%236d4c00' stroke-width='3.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E") center/10px no-repeat;
}

/* ---- 三张截图叠加展示 ---- */
.hero-shots {
  position: relative;
  height: 560px;
  user-select: none;
}

.shot {
  position: absolute;
  top: 0;
  width: 250px;
  cursor: pointer;
  transition: transform 0.5s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.5s ease, z-index 0s;
  will-change: transform;
}
.shot figcaption {
  margin-top: 14px;
  text-align: center;
  font-size: 14px;
  font-weight: 600;
  color: var(--muted);
  transition: color 0.3s;
}

.phone {
  position: relative;
  width: 100%;
  aspect-ratio: 9 / 19.2;
  border-radius: 34px;
  padding: 10px;
  background: #ffffff;
  border: 1px solid rgba(85, 139, 47, 0.15);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  transition: box-shadow 0.5s ease;
}
.phone::before {
  content: "";
  position: absolute;
  top: 10px; left: 50%;
  transform: translateX(-50%);
  width: 76px; height: 20px;
  border-radius: 999px;
  background: #eaf1e0;
  z-index: 3;
}
.phone img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 25px;
  position: relative;
  z-index: 2;
}
.phone img.img-empty { opacity: 0; }
/* 截图占位底（src 为空时展示） */
.shot-tip {
  position: absolute;
  inset: 10px;
  z-index: 1;
  border-radius: 25px;
  display: grid;
  place-items: center;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 2px;
  color: rgba(51, 105, 30, 0.55);
  background:
    radial-gradient(circle at 50% 34%, rgba(255, 217, 90, 0.75) 0 46px, transparent 47px),
    repeating-linear-gradient(0deg, rgba(139, 195, 74, 0.08) 0 46px, transparent 46px 92px),
    linear-gradient(165deg, #f3f9e6, #e4f0cf);
}

.shot-1 { left: 0;   z-index: 3; transform: rotate(-7deg) translateY(46px); }
.shot-2 { left: 27%; z-index: 4; transform: translateY(0) scale(1.02); }
.shot-3 { left: 54%; z-index: 2; transform: rotate(7deg) translateY(46px); }

/* 悬停（或触屏点击）哪张，哪张置顶放大 */
.shot.is-front { z-index: 10; }
.shot-1.is-front { transform: rotate(-1.5deg) translateY(-8px) scale(1.07); }
.shot-2.is-front { transform: translateY(-14px) scale(1.09); }
.shot-3.is-front { transform: rotate(1.5deg) translateY(-8px) scale(1.07); }
.shot.is-front .phone { box-shadow: var(--shadow-lg); }
.shot.is-front figcaption { color: var(--green-700); }

/* ---- 数据条 ---- */
.hero-stats {
  position: relative;
  margin-top: 64px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  padding: 26px 34px;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(8px);
}
.stat { text-align: center; }
.stat b {
  display: block;
  font-size: clamp(20px, 2.4vw, 28px);
  font-weight: 800;
  background: linear-gradient(120deg, var(--green-700), var(--green));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.stat span { font-size: 13.5px; color: var(--muted); }

/* ============ 通用 Section ============ */
.section { padding: 96px 0; }
.section-alt {
  background:
    radial-gradient(700px 320px at 8% 0%, rgba(255, 217, 90, 0.16) 0%, transparent 60%),
    #ffffff;
}

.section-head { text-align: center; max-width: 640px; margin: 0 auto 54px; }
.eyebrow {
  display: inline-block;
  padding: 6px 18px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 3px;
  color: var(--green-700);
  background: rgba(139, 195, 74, 0.14);
  border: 1px solid rgba(139, 195, 74, 0.3);
  margin-bottom: 16px;
}
.section-head h2 {
  font-size: clamp(28px, 3.4vw, 40px);
  font-weight: 800;
  color: var(--green-deep);
  letter-spacing: 0.5px;
  margin-bottom: 14px;
}
.section-head p { color: var(--muted); font-size: 16px; }

/* ============ 功能优点 ============ */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.feature-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 34px 30px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.35s ease, box-shadow 0.35s ease;
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: "";
  position: absolute;
  top: -46px; right: -46px;
  width: 110px; height: 110px;
  border-radius: 50%;
  background: rgba(255, 217, 90, 0.18);
  transition: transform 0.45s ease;
}
.feature-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-md); }
.feature-card:hover::before { transform: scale(1.6); }

.fi {
  width: 58px; height: 58px;
  border-radius: 16px;
  display: grid;
  place-items: center;
  margin-bottom: 20px;
}
.fi svg { width: 28px; height: 28px; }
.fi-green {
  color: var(--green-700);
  background: linear-gradient(145deg, rgba(139, 195, 74, 0.2), rgba(139, 195, 74, 0.08));
  border: 1px solid rgba(139, 195, 74, 0.3);
}
.fi-yellow {
  color: #8a6400;
  background: linear-gradient(145deg, rgba(255, 217, 90, 0.5), rgba(255, 217, 90, 0.2));
  border: 1px solid rgba(255, 202, 40, 0.5);
}
.feature-card h3 { font-size: 20px; color: var(--green-deep); margin-bottom: 10px; }
.feature-card p { font-size: 14.5px; color: var(--muted); }

/* ============ 用户评价 ============ */
.review-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.review-card {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 26px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: transform 0.35s ease, box-shadow 0.35s ease;
}
.review-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.review-card > p { font-size: 14.5px; color: #43503a; flex: 1; }

.stars { display: flex; gap: 3px; font-size: 0; }
.stars svg { width: 18px; height: 18px; }
.stars .full { fill: var(--yellow-deep); }
.stars .half { fill: url(#halfStar); }
.stars .empty { fill: #dde5cf; }

.reviewer { display: flex; align-items: center; gap: 12px; }
/* 汉字头像（不使用 img） */
.avatar {
  width: 46px; height: 46px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 19px;
  font-weight: 800;
  color: #fff;
  background: linear-gradient(145deg, var(--green) 0%, var(--green-700) 100%);
  box-shadow: inset 0 0 0 2px rgba(255, 255, 255, 0.45), var(--shadow-sm);
}
.review-card:nth-child(even) .avatar {
  background: linear-gradient(145deg, var(--yellow) 0%, var(--yellow-deep) 100%);
  color: #6d4c00;
}
.reviewer b { display: block; font-size: 15px; color: var(--ink); line-height: 1.3; }
.reviewer small { font-size: 12.5px; color: var(--muted); }

/* ============ 常见问题 ============ */
.faq-list { display: flex; flex-direction: column; gap: 14px; }
.faq-item {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 16px;
  overflow: hidden;
  transition: box-shadow 0.3s ease, border-color 0.3s ease;
}
.faq-item.open { border-color: rgba(139, 195, 74, 0.45); box-shadow: var(--shadow-sm); }

.faq-q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  background: none;
  border: 0;
  cursor: pointer;
  text-align: left;
  font-size: 16px;
  font-weight: 700;
  color: var(--green-deep);
  font-family: inherit;
}
.faq-icon {
  position: relative;
  flex-shrink: 0;
  width: 28px; height: 28px;
  border-radius: 50%;
  background: rgba(255, 217, 90, 0.4);
  transition: transform 0.35s ease, background 0.35s ease;
}
.faq-icon::before, .faq-icon::after {
  content: "";
  position: absolute;
  top: 50%; left: 50%;
  background: #6d4c00;
  border-radius: 2px;
  transform: translate(-50%, -50%);
}
.faq-icon::before { width: 12px; height: 2.2px; }
.faq-icon::after { width: 2.2px; height: 12px; transition: transform 0.35s ease; }
.faq-item.open .faq-icon { background: var(--yellow); transform: rotate(180deg); }
.faq-item.open .faq-icon::after { transform: translate(-50%, -50%) scaleY(0); }

.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}
.faq-a p {
  padding: 0 24px 22px;
  font-size: 14.5px;
  color: var(--muted);
}

/* ============ 下载区域（重点） ============ */
.download {
  position: relative;
  padding: 100px 0 110px;
  background:
    radial-gradient(900px 480px at 50% -20%, rgba(255, 217, 90, 0.28) 0%, transparent 60%),
    linear-gradient(160deg, var(--green-deep) 0%, #3e7a24 55%, var(--green-700) 100%);
  overflow: hidden;
}
.dl-decor { position: absolute; inset: 0; pointer-events: none; }
.yolk-3 { width: 210px; height: 210px; left: -70px; bottom: -80px; opacity: 0.35; animation: float 8s ease-in-out infinite; }
.yolk-4 { width: 120px; height: 120px; right: 5%; top: 12%; opacity: 0.3; animation: float 10s ease-in-out infinite reverse; }

.dl-inner { position: relative; text-align: center; color: #fff; }

.dl-logo {
  width: 84px; height: 84px;
  border-radius: 24px;
  margin: 0 auto 26px;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.28), inset 0 0 0 3px rgba(255, 255, 255, 0.55);
}
.dl-logo::after { font-size: 40px; }

.download h2 {
  font-size: clamp(30px, 4vw, 46px);
  font-weight: 800;
  letter-spacing: 1px;
  margin-bottom: 14px;
  text-shadow: 0 3px 14px rgba(0, 0, 0, 0.18);
}
.dl-sub {
  font-size: 16.5px;
  color: rgba(255, 255, 255, 0.85);
  max-width: 560px;
  margin: 0 auto 26px;
}

.dl-meta {
  display: inline-flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 12px 18px;
  padding: 12px 26px;
  margin-bottom: 40px;
  border-radius: 999px;
  font-size: 14.5px;
  color: rgba(255, 255, 255, 0.92);
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.22);
  backdrop-filter: blur(6px);
}
.dl-meta b { color: var(--yellow); font-weight: 800; }
.dl-meta i {
  width: 5px; height: 5px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.5);
}

.dl-buttons {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 20px;
}
.dl-btn {
  display: flex;
  align-items: center;
  gap: 16px;
  min-width: 300px;
  padding: 18px 26px;
  border-radius: 20px;
  text-align: left;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.dl-btn svg { flex-shrink: 0; }
.dl-btn-text { flex: 1; line-height: 1.35; }
.dl-btn-text small { display: block; font-size: 13px; opacity: 0.85; }
.dl-btn-text b { display: block; font-size: 19px; font-weight: 800; }
.dl-btn-go {
  flex-shrink: 0;
  padding: 9px 18px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 700;
}

.dl-android {
  color: #1d2b00;
  background: linear-gradient(135deg, var(--yellow) 0%, var(--yellow-deep) 100%);
  box-shadow: 0 16px 40px rgba(255, 202, 40, 0.38);
}
.dl-android .dl-btn-go { background: rgba(0, 0, 0, 0.14); }
.dl-android:hover { transform: translateY(-5px) scale(1.02); box-shadow: 0 24px 54px rgba(255, 202, 40, 0.5); }

.dl-ios {
  color: #fff;
  background: rgba(255, 255, 255, 0.12);
  border: 1.5px solid rgba(255, 255, 255, 0.45);
  backdrop-filter: blur(8px);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.2);
}
.dl-ios .dl-btn-go { background: rgba(255, 255, 255, 0.18); }
.dl-ios:hover { transform: translateY(-5px) scale(1.02); background: rgba(255, 255, 255, 0.2); }

.dl-note {
  margin-top: 34px;
  font-size: 13.5px;
  letter-spacing: 1px;
  color: rgba(255, 255, 255, 0.7);
}

/* ============ 页脚 ============ */
.footer { background: #223014; color: rgba(255, 255, 255, 0.82); }
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
  padding: 46px 0 30px;
}
.footer-brand { display: flex; align-items: center; gap: 14px; }
.footer-brand b { font-size: 18px; color: #fff; }
.footer-brand p { font-size: 13px; color: rgba(255, 255, 255, 0.6); }
.footer-links { display: flex; flex-wrap: wrap; gap: 12px 26px; font-size: 14.5px; }
.footer-links a { transition: color 0.25s; }
.footer-links a:hover { color: var(--yellow); }
.footer-copy {
  padding: 18px 0 26px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 12.5px;
  color: rgba(255, 255, 255, 0.45);
  text-align: center;
}

/* ============ 滚动入场动画 ============ */
.reveal {
  opacity: 0;
  transform: translateY(34px);
  transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}
.reveal.visible { opacity: 1; transform: none; }

/* ============ 响应式 ============ */
@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; gap: 70px; }
  .hero-text { text-align: center; }
  .hero-desc { margin-left: auto; margin-right: auto; }
  .hero-actions, .hero-points, .hero-badges { justify-content: center; }
  .hero-shots { height: 520px; max-width: 640px; margin: 0 auto; }
  .shot { width: 218px; }
  .feature-grid, .review-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  :root { --nav-h: 62px; }

  .nav-toggle { display: flex; }
  .nav-links {
    position: fixed;
    top: var(--nav-h);
    left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 14px 5%;
    background: rgba(255, 255, 255, 0.97);
    backdrop-filter: blur(14px);
    box-shadow: var(--shadow-md);
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.3s ease, opacity 0.3s ease;
  }
  .nav-links.open { transform: none; opacity: 1; pointer-events: auto; }
  .nav-links a { padding: 13px 10px; border-radius: 12px; }
  .nav-links a:not(.nav-cta):hover { background: rgba(139, 195, 74, 0.1); }
  .nav-links a::after { display: none; }
  .nav-cta { text-align: center; margin-top: 6px; }

  .brand-text small { display: none; }

  .hero { padding-top: calc(var(--nav-h) + 40px); }
  .hero-shots { height: 470px; }
  .shot { width: 190px; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 22px 10px; padding: 24px 18px; }

  .section { padding: 72px 0; }
  .feature-grid, .review-grid { grid-template-columns: 1fr; }

  .dl-buttons { flex-direction: column; align-items: stretch; }
  .dl-btn { min-width: 0; width: 100%; max-width: 420px; margin: 0 auto; }
  .dl-meta { border-radius: 18px; }
}

@media (max-width: 420px) {
  .hero-shots { height: 430px; }
  .shot { width: 165px; }
  .phone { border-radius: 26px; padding: 8px; }
  .shot-tip { inset: 8px; border-radius: 19px; font-size: 12.5px; }
  .badge { font-size: 12.5px; }
}

/* 减少动态偏好 */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  .reveal { opacity: 1; transform: none; }
}