/* ============================================================
   栗子漫画 官网落地页样式
   配色取自 App Logo：明黄 / 墨黑 / 奶白
   ============================================================ */

:root {
  --yellow: #ffc400;
  --yellow-soft: #ffd34d;
  --yellow-light: #fff1bd;
  --yellow-deep: #e8a200;
  --ink: #241a10;
  --ink-2: #3d2f1f;
  --cream: #fffbf2;
  --paper: #fff6e3;
  --white: #ffffff;
  --text: #4a3b29;
  --muted: #8a7963;
  --line: #f1e6d0;
  --shadow: 0 18px 50px -18px rgba(36, 26, 16, 0.22);
  --shadow-soft: 0 10px 30px -14px rgba(36, 26, 16, 0.18);
  --radius: 22px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Segoe UI", sans-serif;
  color: var(--text);
  background: var(--cream);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { display: block; max-width: 100%; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

.container {
  width: min(1180px, 92%);
  margin: 0 auto;
}

section[id] { scroll-margin-top: 92px; }

.hl { color: var(--yellow-deep); position: relative; }
.hl-dark { color: var(--ink); position: relative; }
.hl-dark::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 2px;
  height: 10px;
  background: var(--yellow);
  opacity: .45;
  z-index: -1;
  border-radius: 4px;
}

/* ---------------- 通用按钮 ---------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 13px 26px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 700;
  white-space: nowrap;
  transition: transform .28s ease, box-shadow .28s ease, background .28s ease, color .28s ease;
}
.btn-primary {
  background: var(--yellow);
  color: var(--ink);
  box-shadow: 0 10px 26px -8px rgba(232, 162, 0, .65), inset 0 -3px 0 rgba(36, 26, 16, .12);
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 16px 34px -10px rgba(232, 162, 0, .75); }
.btn-ghost {
  background: rgba(255, 255, 255, .65);
  color: var(--ink);
  border: 1.5px solid rgba(36, 26, 16, .18);
}
.btn-ghost:hover { transform: translateY(-3px); border-color: var(--ink); background: #fff; }
.btn-lg { padding: 16px 32px; font-size: 16px; }

/* ============================================================
   顶部导航
   ============================================================ */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  transition: background .3s ease, box-shadow .3s ease, border-color .3s ease;
  border-bottom: 1px solid transparent;
}
.site-header.scrolled {
  background: rgba(255, 251, 242, .88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom-color: var(--line);
  box-shadow: 0 6px 24px -16px rgba(36, 26, 16, .35);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.brand { display: inline-flex; align-items: center; gap: 11px; }
.brand-name { font-size: 20px; font-weight: 800; color: var(--ink); letter-spacing: .5px; }
.brand-name em { font-style: normal; color: var(--yellow-deep); }

/* Logo：img 覆盖占位图，src 填入后自动显示 */
.logo-badge {
  position: relative;
  width: 42px;
  height: 42px;
  border-radius: 13px;
  background: var(--yellow);
  border: 2.5px solid var(--ink);
  box-shadow: 3px 3px 0 rgba(36, 26, 16, .16);
  flex: 0 0 auto;
  overflow: hidden;
}
.logo-badge-lg {
  width: 76px;
  height: 76px;
  border-radius: 22px;
  border-width: 3.5px;
  margin: 0 auto;
}
.logo-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 2;
  transition: opacity .35s ease;
}
.logo-ph {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  font-weight: 900;
  color: var(--ink);
}
.logo-badge-lg .logo-ph { font-size: 40px; }
.logo-img.img-empty { opacity: 0; }

.main-nav { display: flex; align-items: center; gap: 6px; }
.nav-link {
  padding: 9px 16px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  color: var(--ink-2);
  transition: color .25s, background .25s;
}
.nav-link:hover { color: var(--ink); background: var(--yellow-light); }
.nav-cta {
  background: var(--ink);
  color: var(--yellow);
  margin-left: 8px;
}
.nav-cta:hover { background: var(--ink-2); color: var(--yellow-soft); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}
.nav-toggle span {
  width: 24px;
  height: 2.5px;
  background: var(--ink);
  border-radius: 2px;
  transition: transform .3s, opacity .3s;
}
.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: 148px 0 70px;
  background:
    radial-gradient(900px 480px at 88% -8%, rgba(255, 196, 0, .28), transparent 60%),
    radial-gradient(700px 420px at -8% 12%, rgba(255, 211, 77, .22), transparent 60%),
    var(--cream);
  overflow: hidden;
}
.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(10px);
  pointer-events: none;
}
.hero-glow-1 {
  width: 340px; height: 340px;
  right: -90px; top: 130px;
  background: radial-gradient(circle, rgba(255,196,0,.35), transparent 65%);
}
.hero-glow-2 {
  width: 260px; height: 260px;
  left: -80px; bottom: 40px;
  background: radial-gradient(circle, rgba(255,211,77,.35), transparent 65%);
}

.hero-inner {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 46px;
}
.hero-copy { flex: 1 1 52%; min-width: 0; }

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 16px;
  border-radius: 999px;
  background: var(--white);
  border: 1px solid var(--line);
  font-size: 13.5px;
  font-weight: 600;
  color: var(--ink-2);
  box-shadow: var(--shadow-soft);
}
.hero-pill .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--yellow-deep);
  box-shadow: 0 0 0 4px rgba(232, 162, 0, .18);
  animation: pulse-dot 2s ease-in-out infinite;
}
@keyframes pulse-dot {
  0%, 100% { box-shadow: 0 0 0 3px rgba(232,162,0,.18); }
  50% { box-shadow: 0 0 0 7px rgba(232,162,0,.06); }
}

.hero-title {
  margin: 22px 0 18px;
  font-size: clamp(34px, 5vw, 56px);
  line-height: 1.18;
  font-weight: 900;
  color: var(--ink);
  letter-spacing: 1px;
}
.hero-title .hl {
  background: linear-gradient(transparent 62%, rgba(255,196,0,.55) 62%);
  padding: 0 4px;
}
.hero-desc {
  font-size: 16.5px;
  color: var(--text);
  max-width: 560px;
}

/* 版本号 / 更新日期 */
.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 26px 0 30px;
}
.hero-meta li {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 10px 18px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: var(--shadow-soft);
  min-width: 108px;
}
.meta-label { font-size: 12px; color: var(--muted); }
.meta-value { font-size: 17px; font-weight: 800; color: var(--ink); }

.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }

.hero-trust {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  margin-top: 24px;
  font-size: 13.5px;
  color: var(--muted);
  font-weight: 600;
}
.hero-trust span { display: inline-flex; align-items: center; gap: 7px; }
.hero-trust .check {
  width: 16px; height: 16px;
  border-radius: 50%;
  background: var(--yellow);
  border: 2px solid var(--ink);
  position: relative;
}
.hero-trust .check::after {
  content: "";
  position: absolute;
  left: 3.5px; top: 1.5px;
  width: 4px; height: 7px;
  border: solid var(--ink);
  border-width: 0 2px 2px 0;
  transform: rotate(42deg);
}

/* ---------------- 首屏截图（层叠 + 悬停前置） ---------------- */
.hero-shots {
  position: relative;
  flex: 0 0 470px;
  height: 548px;
}
.shot {
  position: absolute;
  width: 228px;
  transition: transform .55s cubic-bezier(.22, 1, .36, 1), filter .45s ease;
  will-change: transform;
  cursor: pointer;
  outline: none;
}
.shot-1 { left: 4%; top: 58px; transform: rotate(-8deg); z-index: 1; }
.shot-2 { left: 50%; top: 12px; transform: translateX(-50%) rotate(2deg); z-index: 3; }
.shot-3 { right: 4%; top: 58px; transform: rotate(8deg); z-index: 2; }

.hero-shots:hover .shot:not(:hover) { filter: brightness(.9) saturate(.85); }
.shot:hover,
.shot:focus-visible {
  transform: translateY(-26px) scale(1.08) rotate(0deg);
  z-index: 10;
  filter: none;
}
.shot:hover .phone,
.shot:focus-visible .phone { animation-play-state: paused; }

.phone {
  position: relative;
  aspect-ratio: 9 / 19;
  border-radius: 32px;
  background: var(--ink);
  padding: 10px;
  box-shadow: 0 30px 60px -22px rgba(36, 26, 16, .55),
    inset 0 0 0 2px rgba(255, 255, 255, .06);
}
.phone::before {
  content: "";
  position: absolute;
  top: 16px; left: 50%;
  transform: translateX(-50%);
  width: 52px; height: 6px;
  border-radius: 6px;
  background: rgba(255, 255, 255, .22);
  z-index: 4;
}

.float-a { animation: floaty 5.2s ease-in-out infinite; }
.float-b { animation: floaty 6s ease-in-out infinite .6s; }
.float-c { animation: floaty 5.6s ease-in-out infinite 1.1s; }
@keyframes floaty {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-13px); }
}

/* 截图 img：src 留空时透明显示占位，填入地址后自动覆盖 */
.shot-img {
  position: absolute;
  inset: 10px;
  width: calc(100% - 20px);
  height: calc(100% - 20px);
  object-fit: cover;
  border-radius: 23px;
  z-index: 2;
  opacity: 1;
  transition: opacity .4s ease;
}
.shot-img.img-empty { opacity: 0; }

.shot-ph {
  position: absolute;
  inset: 10px;
  border-radius: 23px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  text-align: center;
  padding: 18px;
  background:
    radial-gradient(120% 70% at 50% 0%, #fff8e2 0%, #ffeeb8 55%, #ffe08a 100%);
}
.shot-ph::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(0deg, rgba(36,26,16,.05) 0 1px, transparent 1px 46px),
    repeating-linear-gradient(90deg, rgba(36,26,16,.05) 0 1px, transparent 1px 46px);
}
.shot-ph::after {
  content: "";
  position: absolute;
  left: 16px; right: 16px; bottom: 78px;
  height: 64px;
  border-radius: 14px;
  background:
    linear-gradient(var(--ink), var(--ink)) 0 12px / 55% 8px no-repeat,
    linear-gradient(rgba(36,26,16,.18), rgba(36,26,16,.18)) 0 30px / 80% 6px no-repeat,
    linear-gradient(rgba(36,26,16,.12), rgba(36,26,16,.12)) 0 46px / 65% 6px no-repeat,
    rgba(255, 255, 255, .7);
  border: 1px solid rgba(36,26,16,.08);
}
.shot-logo {
  position: relative;
  z-index: 1;
  width: 54px; height: 54px;
  border-radius: 16px;
  background: var(--yellow);
  border: 2.5px solid var(--ink);
  overflow: hidden;
  box-shadow: 3px 3px 0 rgba(36,26,16,.18);
}
.shot-logo-img {
  position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover;
  z-index: 2; transition: opacity .4s ease;
}
.shot-logo-img.img-empty { opacity: 0; }
.shot-logo-ph {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 28px; font-weight: 900; color: var(--ink);
}
.shot-ph-title {
  position: relative; z-index: 1;
  font-size: 19px; font-weight: 900; color: var(--ink);
}
.shot-ph-text {
  position: relative; z-index: 1;
  font-size: 12.5px; color: var(--ink-2); font-weight: 600;
}
.shot-ph-tag {
  position: absolute;
  bottom: 18px;
  padding: 4px 14px;
  border-radius: 999px;
  background: var(--ink);
  color: var(--yellow);
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 1px;
}

.shots-hint {
  position: absolute;
  bottom: -6px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 13px;
  color: var(--muted);
  font-weight: 600;
  white-space: nowrap;
}

/* ---------------- 数据条 ---------------- */
.stats-bar {
  position: relative;
  z-index: 3;
  margin-top: 26px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.stats-bar li {
  padding: 26px 20px;
  text-align: center;
  position: relative;
}
.stats-bar li + li::before {
  content: "";
  position: absolute;
  left: 0; top: 25%;
  height: 50%;
  width: 1px;
  background: var(--line);
}
.stats-bar strong {
  display: block;
  font-size: 26px;
  font-weight: 900;
  color: var(--ink);
}
.stats-bar span { font-size: 13.5px; color: var(--muted); }

/* ============================================================
   通用 Section
   ============================================================ */
.section { padding: 96px 0; }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 56px; }
.section-tag {
  display: inline-block;
  padding: 6px 18px;
  border-radius: 999px;
  background: var(--yellow-light);
  color: var(--yellow-deep);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 2px;
  margin-bottom: 16px;
}
.section-title {
  font-size: clamp(27px, 3.4vw, 40px);
  font-weight: 900;
  color: var(--ink);
  line-height: 1.3;
}
.section-sub { margin-top: 14px; color: var(--muted); font-size: 16px; }

/* ---------------- 功能亮点 ---------------- */
.section-features {
  background:
    radial-gradient(700px 360px at 100% 0%, rgba(255,196,0,.12), transparent 60%),
    var(--white);
}
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.feature-card {
  padding: 34px 28px;
  border-radius: var(--radius);
  background: var(--cream);
  border: 1px solid var(--line);
  transition: transform .35s ease, box-shadow .35s ease, border-color .35s ease;
}
.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow);
  border-color: rgba(232, 162, 0, .5);
}
.feature-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 58px; height: 58px;
  border-radius: 17px;
  background: var(--yellow);
  color: var(--ink);
  border: 2.5px solid var(--ink);
  box-shadow: 4px 4px 0 rgba(36, 26, 16, .14);
  margin-bottom: 20px;
}
.feature-icon svg { width: 28px; height: 28px; }
.feature-card h3 { font-size: 19.5px; font-weight: 800; color: var(--ink); margin-bottom: 10px; }
.feature-card p { font-size: 14.5px; color: var(--text); }

/* ---------------- 用户评价 ---------------- */
.section-reviews { background: var(--paper); }
.review-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.review-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
  transition: transform .35s ease, box-shadow .35s ease;
}
.review-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }

.review-head { display: flex; align-items: center; gap: 13px; margin-bottom: 16px; }
.avatar {
  width: 48px; height: 48px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 20px; font-weight: 900;
  background: var(--av-bg, var(--yellow));
  color: var(--av-fg, var(--ink));
  border: 2.5px solid rgba(36, 26, 16, .12);
  flex: 0 0 auto;
}
.review-meta { display: flex; flex-direction: column; gap: 2px; }
.review-meta strong { font-size: 15.5px; color: var(--ink); }
.stars { color: var(--yellow-deep); font-size: 14px; letter-spacing: 2px; }
.review-card p { font-size: 14.5px; color: var(--text); }

/* ---------------- 常见问题 ---------------- */
.section-faq { background: var(--white); }
.faq-wrap { max-width: 820px; }
.faq-head { margin-bottom: 40px; }
.faq-item {
  background: var(--cream);
  border: 1px solid var(--line);
  border-radius: 16px;
  margin-bottom: 14px;
  overflow: hidden;
  transition: border-color .3s, box-shadow .3s;
}
.faq-item.open { border-color: rgba(232, 162, 0, .55); box-shadow: var(--shadow-soft); }
.faq-q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  text-align: left;
  font-size: 16.5px;
  font-weight: 800;
  color: var(--ink);
}
.faq-icon {
  position: relative;
  width: 18px; height: 18px;
  flex: 0 0 auto;
}
.faq-icon::before,
.faq-icon::after {
  content: "";
  position: absolute;
  top: 50%; left: 50%;
  width: 16px; height: 2.5px;
  background: var(--yellow-deep);
  border-radius: 2px;
  transform: translate(-50%, -50%);
  transition: transform .3s ease;
}
.faq-icon::after { transform: translate(-50%, -50%) rotate(90deg); }
.faq-item.open .faq-icon::after { transform: translate(-50%, -50%) rotate(0deg); }

.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height .4s ease;
}
.faq-a p {
  padding: 0 24px 22px;
  color: var(--text);
  font-size: 15px;
}

/* ---------------- 下载区域 ---------------- */
.section-download {
  position: relative;
  padding: 110px 0;
  background:
    radial-gradient(680px 380px at 50% -10%, rgba(255,196,0,.22), transparent 62%),
    var(--ink);
  overflow: hidden;
  text-align: center;
}
.dl-glow {
  position: absolute;
  width: 560px; height: 560px;
  left: 50%; bottom: -330px;
  transform: translateX(-50%);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255,196,0,.24), transparent 65%);
  pointer-events: none;
}
.download-box { position: relative; z-index: 2; }
.dl-title {
  margin: 26px 0 12px;
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 900;
  color: #fff;
}
.dl-sub { color: rgba(255,255,255,.72); font-size: 16.5px; }
.dl-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
  margin: 28px 0 40px;
}
.dl-meta li {
  padding: 9px 20px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.18);
  background: rgba(255,255,255,.06);
  color: rgba(255,255,255,.7);
  font-size: 14px;
}
.dl-meta strong { color: var(--yellow); margin-left: 6px; }

/* 唯一真实下载按钮（href 留空，填入地址即可直接跳转） */
.btn-download {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 21px 58px;
  border-radius: 999px;
  background: var(--yellow);
  color: var(--ink);
  font-size: 20px;
  font-weight: 900;
  letter-spacing: 1px;
  box-shadow: 0 14px 44px -10px rgba(255,196,0,.55), inset 0 -4px 0 rgba(36,26,16,.15);
  transition: transform .3s ease, box-shadow .3s ease, background .3s ease;
}
.btn-download::after {
  content: "";
  position: absolute;
  inset: -6px;
  border-radius: 999px;
  border: 2.5px solid rgba(255,196,0,.55);
  animation: btn-ring 2.2s ease-out infinite;
  pointer-events: none;
}
@keyframes btn-ring {
  0% { transform: scale(.96); opacity: .9; }
  70% { transform: scale(1.12); opacity: 0; }
  100% { transform: scale(1.12); opacity: 0; }
}
.btn-download:hover {
  transform: translateY(-4px);
  background: var(--yellow-soft);
  box-shadow: 0 22px 54px -10px rgba(255,196,0,.7);
}
.btn-download:active { transform: translateY(-1px); }

.dl-note { margin-top: 26px; font-size: 13.5px; color: rgba(255,255,255,.5); }

/* ============================================================
   页脚
   ============================================================ */
.site-footer { background: #1a120b; color: rgba(255,255,255,.7); }
.footer-inner {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 40px;
  padding: 56px 0 40px;
}
.site-footer .brand-name { color: #fff; }
.footer-desc { margin-top: 16px; font-size: 14px; line-height: 1.9; }
.footer-nav { display: flex; flex-wrap: wrap; gap: 10px; justify-content: flex-end; max-width: 420px; }
.footer-nav a {
  padding: 8px 15px;
  border-radius: 999px;
  font-size: 14px;
  transition: background .25s, color .25s;
}
.footer-nav a:hover { background: rgba(255,196,0,.14); color: var(--yellow); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  padding: 20px 0;
  font-size: 13px;
  color: rgba(255,255,255,.42);
}

/* ============================================================
   滚动进入动画
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity .75s ease, transform .75s cubic-bezier(.22,1,.36,1);
}
.reveal.in { opacity: 1; transform: translateY(0); }
.feature-grid .reveal:nth-child(2) { transition-delay: .1s; }
.feature-grid .reveal:nth-child(3) { transition-delay: .2s; }
.feature-grid .reveal:nth-child(5) { transition-delay: .1s; }
.feature-grid .reveal:nth-child(6) { transition-delay: .2s; }
.review-grid .reveal:nth-child(2) { transition-delay: .08s; }
.review-grid .reveal:nth-child(3) { transition-delay: .16s; }
.review-grid .reveal:nth-child(5) { transition-delay: .08s; }
.review-grid .reveal:nth-child(6) { transition-delay: .16s; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .float-a, .float-b, .float-c, .btn-download::after, .hero-pill .dot { animation: none; }
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1080px) {
  .hero-shots { flex-basis: 400px; height: 500px; }
  .shot { width: 200px; }
  .feature-grid { gap: 18px; }
}

@media (max-width: 960px) {
  .hero { padding-top: 128px; }
  .hero-inner { flex-direction: column-reverse; gap: 30px; }
  .hero-copy { width: 100%; text-align: center; }
  .hero-desc { margin: 0 auto; }
  .hero-meta, .hero-actions, .hero-trust { justify-content: center; }

  /* 截图在移动端改为横向滑动排列 */
  .hero-shots {
    flex: none;
    width: 100%;
    height: auto;
    display: flex;
    gap: 22px;
    overflow-x: auto;
    padding: 14px 6px 30px;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
  }
  .shot {
    position: static;
    width: 200px;
    flex: 0 0 auto;
    transform: none !important;
    scroll-snap-align: center;
  }
  .hero-shots:hover .shot:not(:hover) { filter: none; }
  .shot:hover,
  .shot.is-active { transform: translateY(-10px) scale(1.05) !important; }
  .shot.is-active { z-index: 10; }
  .shots-hint { display: none; }

  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .review-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .section { padding: 74px 0; }

  /* 移动端导航 */
  .nav-toggle { display: flex; }
  .main-nav {
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: rgba(255,251,242,.97);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--line);
    max-height: 0;
    overflow: hidden;
    transition: max-height .38s ease;
  }
  .main-nav.open { max-height: 420px; }
  .nav-link { padding: 15px 6%; border-radius: 0; font-size: 16px; }
  .nav-cta { margin: 10px 6% 18px; text-align: center; }

  .stats-bar { grid-template-columns: repeat(2, 1fr); }
  .stats-bar li:nth-child(3)::before { display: none; }
  .stats-bar li { padding: 20px 14px; }

  .footer-inner { flex-direction: column; gap: 28px; }
  .footer-nav { justify-content: flex-start; }
}

@media (max-width: 560px) {
  .hero { padding: 116px 0 50px; }
  .hero-meta li { min-width: calc(50% - 6px); flex: 1; }
  .hero-actions .btn { width: 100%; }

  .feature-grid, .review-grid { grid-template-columns: 1fr; }

  .section-head { margin-bottom: 40px; }

  .btn-download { padding: 18px 40px; font-size: 18px; }
  .dl-meta { gap: 10px; }
  .dl-meta li { padding: 8px 14px; font-size: 13px; }

  .faq-q { padding: 17px 18px; font-size: 15.5px; }
  .faq-a p { padding: 0 18px 20px; }
}