/* =========================================================
   蜜桃视频 · mitao-shiping.cn
   版式参考 5s8lx.cn，配色与素材独立设计
   ========================================================= */

:root {
  --paper: #fff8f3;
  --paper-2: #fff1e8;
  --ink: #3a1b24;
  --ink-2: #57333b;
  --muted: #8a6668;
  --peach: #ee6a7c;
  --peach-2: #f58e86;
  --apricot: #f6a15e;
  --peach-deep: #be3553;
  --line: #f1dad3;
  --card: #ffffff;
  --plum: #351720;
  --wash: #ffe9df;
  --shadow-sm: 0 1px 2px rgba(58, 27, 36, .04), 0 10px 26px rgba(190, 53, 83, .06);
  --shadow-lg: 0 24px 60px rgba(120, 40, 50, .16);
  --radius: 20px;
  color-scheme: light;
}

* { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 92px;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(900px 520px at 90% -10%, rgba(246, 161, 94, .20), transparent 62%),
    radial-gradient(760px 520px at -8% 16%, rgba(238, 106, 124, .13), transparent 62%),
    var(--paper);
  font-family: "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  overflow-x: clip;
  -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
::selection { background: rgba(238, 106, 124, .24); }

:focus-visible {
  outline: 3px solid rgba(238, 106, 124, .55);
  outline-offset: 3px;
  border-radius: 6px;
}

.wrap {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.skip {
  position: absolute;
  left: -999px;
  top: 8px;
  z-index: 99;
  padding: 10px 16px;
  border-radius: 10px;
  background: var(--ink);
  color: #fff;
  font-size: 14px;
}
.skip:focus { left: 16px; }

/* ---------- 顶部 ---------- */

.top {
  position: sticky;
  top: 0;
  z-index: 30;
  background: rgba(255, 248, 243, .88);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px) saturate(150%);
  -webkit-backdrop-filter: blur(14px) saturate(150%);
  transition: box-shadow .25s ease;
}
.top.is-scrolled { box-shadow: 0 10px 30px rgba(90, 30, 40, .08); }

.bar {
  display: flex;
  align-items: center;
  gap: 26px;
  min-height: 72px;
}

.mark {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 750;
  letter-spacing: .02em;
  flex-shrink: 0;
}
.mark img {
  width: 36px;
  height: 36px;
  border-radius: 11px;
  border: 1px solid rgba(190, 53, 83, .12);
  box-shadow: 0 6px 16px rgba(190, 53, 83, .14);
}
.mark b { font-size: 20px; line-height: 1.1; }
.mark span {
  font-size: 12px;
  color: var(--muted);
  font-weight: 500;
  letter-spacing: .08em;
  padding-left: 2px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 22px;
  margin-left: auto;
  font-size: 15px;
}
.nav a {
  position: relative;
  padding: 6px 0;
  color: var(--ink-2);
  transition: color .2s ease;
}
.nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  border-radius: 2px;
  background: var(--peach);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .22s ease;
}
.nav a:hover { color: var(--peach-deep); }
.nav a:hover::after { transform: scaleX(1); }
.nav .nav-dl { display: none; }

.nav-toggle {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}
.nav-btn {
  display: none;
  align-items: center;
  gap: 8px;
  margin-left: auto;
  padding: 8px 15px;
  border: 1px solid rgba(58, 27, 36, .22);
  border-radius: 999px;
  font-size: 14px;
  color: var(--ink);
  cursor: pointer;
  user-select: none;
}
.nav-btn::before {
  content: "";
  width: 14px;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  box-shadow: 0 5px 0 currentColor, 0 -5px 0 currentColor;
}

/* ---------- 按钮 ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 46px;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: 999px;
  background: var(--ink);
  color: #fff;
  font-size: 15px;
  font-weight: 650;
  line-height: 1.3;
  white-space: nowrap;
  cursor: pointer;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.btn:hover { transform: translateY(-2px); background: #4a2530; box-shadow: 0 12px 26px rgba(58, 27, 36, .18); }
.btn:active { transform: translateY(0); }

.btn.peach {
  background: linear-gradient(135deg, var(--peach) 0%, var(--peach-deep) 100%);
  box-shadow: 0 10px 24px rgba(190, 53, 83, .24);
}
.btn.peach:hover {
  background: linear-gradient(135deg, #f27989 0%, #c93d5b 100%);
  box-shadow: 0 14px 30px rgba(190, 53, 83, .3);
}

.btn.ghost {
  background: transparent;
  color: var(--ink);
  border-color: rgba(58, 27, 36, .26);
}
.btn.ghost:hover { background: rgba(255, 255, 255, .7); box-shadow: var(--shadow-sm); }

.btn.light {
  background: #fff;
  color: var(--plum);
  box-shadow: 0 10px 26px rgba(20, 5, 10, .18);
}
.btn.light:hover { background: #fff6f1; }

.btn.sm { min-height: 40px; padding: 0 17px; font-size: 14px; }

/* ---------- 首屏 ---------- */

.hero {
  display: grid;
  grid-template-columns: 1.04fr .96fr;
  gap: 48px;
  align-items: center;
  padding: 58px 0 30px;
}

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 16px;
  font-size: 12px;
  font-weight: 650;
  letter-spacing: .18em;
  color: var(--peach-deep);
  text-transform: uppercase;
}
.kicker::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--peach);
}

h1, h2, h3, p { margin-top: 0; }

.hero h1 {
  margin: 0;
  font-size: clamp(38px, 5.2vw, 62px);
  line-height: 1.12;
  letter-spacing: -.035em;
  font-weight: 800;
}
.hero h1 em {
  font-style: normal;
  color: var(--peach-deep);
  background: linear-gradient(transparent 70%, rgba(246, 161, 94, .34) 70%);
  padding: 0 .04em;
}

.lead {
  margin: 20px 0 0;
  max-width: 34em;
  color: var(--ink-2);
  font-size: 17px;
  line-height: 1.8;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 11px;
  margin-top: 26px;
}

.hero-note {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 12px;
  margin: 18px 0 0;
  font-size: 12.5px;
  color: var(--muted);
  letter-spacing: .02em;
}
.hero-note span { display: inline-flex; align-items: center; gap: 7px; }
.hero-note span + span::before {
  content: "";
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--line);
  margin-right: 5px;
}

.hero-photo {
  position: relative;
  margin: 0;
  isolation: isolate;
}
.hero-photo::before {
  content: "";
  position: absolute;
  inset: 16px -14px -14px 16px;
  border: 1px solid rgba(190, 53, 83, .26);
  border-radius: 26px 26px 8px 26px;
  z-index: -1;
}
.hero-photo img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-radius: 26px 26px 8px 26px;
  box-shadow: var(--shadow-lg);
}
.photo-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, .86);
  backdrop-filter: blur(8px);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .05em;
  color: var(--ink);
  box-shadow: 0 4px 14px rgba(58, 27, 36, .08);
}
.photo-tag::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--peach);
  box-shadow: 0 0 0 4px rgba(238, 106, 124, .16);
}
.caption {
  margin-top: 12px;
  font-size: 12px;
  color: var(--muted);
  letter-spacing: .03em;
}

/* ---------- 品类 ---------- */

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  padding: 16px 0 18px;
}
.chips a {
  padding: 8px 15px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, .74);
  color: var(--ink-2);
  font-size: 14px;
  line-height: 1.4;
  transition: background .2s ease, color .2s ease, border-color .2s ease, transform .2s ease;
}
.chips a:hover {
  background: var(--peach);
  border-color: var(--peach);
  color: #fff;
  transform: translateY(-1px);
}

/* ---------- 区块 ---------- */

.section { padding: 46px 0; }

.section h2,
.band h2 {
  margin: 0 0 7px;
  font-size: clamp(27px, 3.2vw, 38px);
  line-height: 1.24;
  letter-spacing: -.025em;
  font-weight: 780;
}
.sub {
  margin: 0 0 22px;
  max-width: 44em;
  color: var(--muted);
  font-size: 15px;
}

/* ---------- 热播卡片 ---------- */

.grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 15px;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  overflow: hidden;
  box-shadow: 0 1px 0 rgba(58, 27, 36, .02);
  transition: transform .28s ease, box-shadow .28s ease, border-color .28s ease;
}
.card:hover {
  transform: translateY(-5px);
  border-color: rgba(238, 106, 124, .42);
  box-shadow: var(--shadow-lg);
}

.card .shot {
  position: relative;
  aspect-ratio: 9 / 16;
  overflow: hidden;
  background: var(--wash);
}
.card .shot img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .55s cubic-bezier(.2, .7, .3, 1);
}
.card:hover .shot img { transform: scale(1.045); }

.card .time {
  position: absolute;
  left: 10px;
  bottom: 10px;
  padding: 4px 8px;
  border-radius: 6px;
  background: rgba(26, 10, 14, .62);
  color: #fff;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .06em;
  line-height: 1.4;
  backdrop-filter: blur(4px);
}

.card .play {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 46px;
  height: 46px;
  margin: -23px 0 0 -23px;
  border-radius: 50%;
  background: rgba(255, 255, 255, .88);
  box-shadow: 0 8px 22px rgba(26, 10, 14, .2);
  opacity: 0;
  transform: scale(.86);
  transition: opacity .25s ease, transform .25s ease;
}
.card .play::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  margin: -7px 0 0 -5px;
  border-left: 11px solid var(--peach-deep);
  border-top: 7px solid transparent;
  border-bottom: 7px solid transparent;
}
.card:hover .play { opacity: 1; transform: scale(1); }

.card .pad { padding: 13px 15px 17px; }
.card h3 {
  margin: 0;
  font-size: 17px;
  line-height: 1.4;
  letter-spacing: -.01em;
  font-weight: 680;
}
.card p {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 13px;
}

/* ---------- 怎么看 ---------- */

.band {
  display: grid;
  grid-template-columns: 1.02fr .98fr;
  gap: 34px;
  align-items: start;
}
.band .sub { max-width: 30em; }

.feature {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.feature article {
  position: relative;
  overflow: hidden;
  padding: 22px 21px 24px;
  border-radius: 18px;
  background: linear-gradient(160deg, #3d1c26 0%, #2a1118 100%);
  color: #fff3ec;
  box-shadow: 0 14px 34px rgba(58, 20, 30, .14);
}
.feature article::after {
  content: "";
  position: absolute;
  right: -46px;
  bottom: -54px;
  width: 130px;
  height: 130px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(238, 106, 124, .34), transparent 70%);
  pointer-events: none;
}
.feature .num {
  display: block;
  margin-bottom: 28px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .18em;
  color: var(--apricot);
}
.feature h3 {
  margin: 0 0 7px;
  font-size: 19px;
  line-height: 1.45;
  letter-spacing: -.01em;
}
.feature p {
  margin: 0;
  color: #e9cbc6;
  font-size: 14px;
  line-height: 1.7;
}

/* ---------- 下载 ---------- */

.download { padding: 54px 0 38px; }

.download-panel {
  position: relative;
  overflow: hidden;
  display: grid;
  grid-template-columns: 1.22fr .78fr;
  gap: 42px;
  align-items: center;
  padding: clamp(30px, 4.4vw, 54px);
  border-radius: 28px;
  background: linear-gradient(135deg, #3a1922 0%, #5a2430 56%, #7a2f3c 100%);
  color: #fff7f2;
  box-shadow: 0 30px 70px rgba(90, 30, 40, .24);
}
.download-panel::before {
  content: "";
  position: absolute;
  top: -130px;
  right: -90px;
  width: 380px;
  height: 380px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(246, 161, 94, .38), transparent 68%);
  pointer-events: none;
}
.download-panel::after {
  content: "";
  position: absolute;
  left: 38%;
  bottom: -190px;
  width: 340px;
  height: 340px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(238, 106, 124, .24), transparent 68%);
  pointer-events: none;
}
.dl-copy { position: relative; z-index: 1; }
.dl-copy .kicker { color: #ffc3ae; }
.dl-copy .kicker::before { background: #ffc3ae; }
.dl-copy h2 {
  margin: 0 0 15px;
  font-size: clamp(30px, 3.8vw, 44px);
  line-height: 1.18;
  letter-spacing: -.03em;
}
.dl-copy p {
  margin: 0 0 22px;
  max-width: 34em;
  color: #efd7d0;
  font-size: 15px;
  line-height: 1.8;
}
.dl-copy .btn { margin-top: 2px; }
.dl-note {
  margin: 14px 0 0 !important;
  font-size: 12px !important;
  color: #d9b6ad !important;
  letter-spacing: .01em;
}

.dl-card {
  position: relative;
  z-index: 1;
  padding: 24px;
  border: 1px solid rgba(255, 255, 255, .17);
  border-radius: 22px;
  background: rgba(255, 255, 255, .07);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
.dl-app {
  display: flex;
  align-items: center;
  gap: 13px;
  padding-bottom: 17px;
  border-bottom: 1px solid rgba(255, 255, 255, .14);
}
.dl-app img {
  width: 54px;
  height: 54px;
  border-radius: 15px;
  border: 1px solid rgba(255, 255, 255, .22);
}
.dl-app strong {
  display: block;
  font-size: 18px;
  line-height: 1.3;
  letter-spacing: .01em;
}
.dl-app span {
  display: block;
  margin-top: 2px;
  font-size: 12px;
  color: #d9b6ad;
  letter-spacing: .04em;
}
.dl-steps {
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
  counter-reset: dl;
}
.dl-steps li {
  position: relative;
  padding: 8px 0 8px 34px;
  color: #f5e3dd;
  font-size: 13.5px;
  line-height: 1.55;
  counter-increment: dl;
}
.dl-steps li::before {
  content: "0" counter(dl);
  position: absolute;
  left: 0;
  top: 8px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--apricot);
}
.dl-free {
  margin: 14px 0 0;
  padding-top: 13px;
  border-top: 1px solid rgba(255, 255, 255, .14);
  font-size: 11.5px;
  color: #d9b6ad;
  letter-spacing: .06em;
}

/* ---------- 编辑手记 ---------- */

.note {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 26px;
  padding: 30px 0 20px;
  border-top: 1px solid var(--line);
}
.note strong {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .16em;
  color: var(--peach-deep);
  line-height: 2;
}
.note p {
  margin: 0;
  max-width: 62ch;
  color: var(--ink-2);
  font-size: 18px;
  line-height: 1.85;
}

/* ---------- 页脚 ---------- */

.foot {
  margin-top: 26px;
  padding: 30px 0 40px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
}
.foot-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}
.foot .mark img { width: 30px; height: 30px; border-radius: 9px; }
.foot .mark b { font-size: 16px; }
.foot .mark span { font-size: 11px; }
.foot-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
}
.foot-nav a { color: var(--ink-2); transition: color .2s ease; }
.foot-nav a:hover { color: var(--peach-deep); }
.foot-bottom {
  display: flex;
  justify-content: space-between;
  gap: 10px 24px;
  flex-wrap: wrap;
  padding-top: 16px;
  border-top: 1px dashed var(--line);
  font-size: 12px;
  color: #a58686;
}
.foot-bottom p { margin: 0; }

/* ---------- 文档页（隐私 / 协议 / 关于 / 下载） ---------- */

.doc { padding: 54px 0 72px; }

.doc-head {
  max-width: 860px;
  margin-bottom: 36px;
}
.doc-head h1 {
  margin: 0;
  font-size: clamp(34px, 4.6vw, 54px);
  line-height: 1.14;
  letter-spacing: -.035em;
  font-weight: 800;
}
.doc-head .lead { margin-top: 16px; }
.doc-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}
.doc-meta span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 11px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, .68);
  color: var(--muted);
  font-size: 12px;
  letter-spacing: .03em;
}

.prose {
  max-width: 840px;
  color: var(--ink-2);
  font-size: 16.5px;
  line-height: 1.95;
}
.prose h2 {
  margin: 44px 0 12px;
  color: var(--ink);
  font-size: 23px;
  line-height: 1.4;
  letter-spacing: -.015em;
}
.prose h3 {
  margin: 28px 0 8px;
  color: var(--ink);
  font-size: 17px;
}
.prose p { margin: 0 0 14px; }
.prose ul, .prose ol { margin: 0 0 16px; padding-left: 1.35em; }
.prose li { margin: 7px 0; }
.prose strong { color: var(--ink); font-weight: 650; }
.prose a {
  color: var(--peach-deep);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.callout {
  margin: 26px 0;
  padding: 18px 20px;
  border: 1px solid rgba(238, 106, 124, .24);
  border-left: 3px solid var(--peach);
  border-radius: 4px 14px 14px 4px;
  background: rgba(255, 233, 223, .55);
  color: var(--ink-2);
  font-size: 15px;
  line-height: 1.8;
}
.callout p:last-child { margin-bottom: 0; }

/* ---------- 下载页 ---------- */

.dl-hero {
  display: grid;
  grid-template-columns: 1.08fr .92fr;
  gap: 44px;
  align-items: center;
  padding: 46px 0 16px;
}
.dl-hero h1 {
  margin: 0;
  font-size: clamp(36px, 4.8vw, 56px);
  line-height: 1.14;
  letter-spacing: -.035em;
  font-weight: 800;
}
.dl-hero .lead { margin-top: 16px; }

.app-card {
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: #fff;
  box-shadow: 0 28px 64px rgba(90, 30, 40, .12);
}
.app-card-head {
  display: flex;
  align-items: center;
  gap: 14px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}
.app-card-head img {
  width: 62px;
  height: 62px;
  border-radius: 17px;
  border: 1px solid rgba(190, 53, 83, .12);
  box-shadow: 0 8px 18px rgba(190, 53, 83, .14);
}
.app-card-head strong {
  display: block;
  font-size: 20px;
  line-height: 1.3;
}
.app-card-head span {
  display: block;
  margin-top: 2px;
  color: var(--muted);
  font-size: 12.5px;
  letter-spacing: .03em;
}
.app-card .dl-steps li { color: var(--ink-2); }
.app-card .dl-steps li::before { color: var(--peach-deep); }
.app-card .dl-steps { border-bottom: 1px solid var(--line); padding-bottom: 10px; }
.app-card .btn { width: 100%; margin-top: 20px; }
.app-card .fine {
  margin: 11px 0 0;
  color: var(--muted);
  font-size: 11.5px;
  text-align: center;
  letter-spacing: .02em;
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-top: 26px;
}
.step {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255, 255, 255, .8);
}
.step b {
  display: block;
  margin-bottom: 16px;
  color: var(--peach);
  font-size: 12px;
  letter-spacing: .16em;
}
.step h3 { margin: 0 0 6px; font-size: 17px; }
.step p { margin: 0; color: var(--muted); font-size: 13.5px; line-height: 1.7; }

.faq { max-width: 840px; }
.faq details {
  margin-bottom: 10px;
  padding: 0 18px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
}
.faq summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 16px 0;
  font-size: 15.5px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--wash);
  color: var(--peach-deep);
  font-size: 16px;
  font-weight: 500;
  line-height: 1;
}
.faq details[open] summary::after { content: "−"; }
.faq details p {
  margin: 0;
  padding: 0 0 17px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.8;
}

/* ---------- 404 ---------- */

.err {
  padding: 84px 0 92px;
  text-align: center;
}
.err .code {
  margin: 0;
  font-size: clamp(96px, 18vw, 180px);
  font-weight: 850;
  line-height: 1;
  letter-spacing: -.07em;
  background: linear-gradient(135deg, var(--peach) 10%, var(--apricot) 90%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.err h1 {
  margin: 10px 0 10px;
  font-size: clamp(26px, 3.6vw, 38px);
  letter-spacing: -.02em;
}
.err p {
  margin: 0 auto 26px;
  max-width: 34em;
  color: var(--muted);
  font-size: 15px;
}
.err .actions { justify-content: center; }

/* ---------- 响应式 ---------- */

@media (max-width: 980px) {
  .hero { grid-template-columns: 1fr; gap: 34px; padding-top: 42px; }
  .hero-photo { max-width: 720px; }
  .band { grid-template-columns: 1fr; gap: 20px; }
  .download-panel { grid-template-columns: 1fr; gap: 30px; }
  .dl-hero { grid-template-columns: 1fr; gap: 30px; }
  .dl-card { max-width: 460px; }
}

@media (max-width: 900px) {
  .nav {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    margin: 0;
    padding: 8px 20px 16px;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 20px 40px rgba(90, 30, 40, .1);
  }
  .nav a {
    padding: 12px 0;
    border-bottom: 1px solid var(--line);
    font-size: 16px;
  }
  .nav a::after { display: none; }
  .nav a:last-child { border-bottom: 0; }
  .nav .nav-dl {
    display: inline-flex;
    margin-top: 12px;
    justify-content: center;
    border-bottom: 0;
  }
  .nav-toggle:checked ~ .nav { display: flex; }
  .nav-btn { display: inline-flex; }
  .top-cta { display: none; }
}

@media (max-width: 860px) {
  .grid { grid-template-columns: 1fr 1fr; }
  .steps { grid-template-columns: 1fr; }
  .note { grid-template-columns: 1fr; gap: 10px; }
  .note strong { line-height: 1.6; }
}

@media (max-width: 560px) {
  .wrap { width: calc(100% - 32px); }
  .bar { min-height: 64px; gap: 12px; }
  .mark b { font-size: 18px; }
  .mark span { display: none; }
  .mark img { width: 32px; height: 32px; border-radius: 10px; }
  .hero { padding: 34px 0 20px; }
  .hero h1 { font-size: 34px; }
  .lead { font-size: 15.5px; }
  .actions .btn { flex: 1 1 auto; }
  .section { padding: 36px 0; }
  .section h2, .band h2 { font-size: 26px; }
  .hero-photo::before { inset: 10px -8px -9px 10px; }
  .chips { padding-top: 10px; }
  .chips a { padding: 7px 13px; font-size: 13px; }
  .feature { grid-template-columns: 1fr; }
  .feature article { padding: 20px; }
  .feature .num { margin-bottom: 18px; }
  .download-panel { padding: 26px 22px; border-radius: 22px; }
  .dl-card { padding: 20px; }
  .note p { font-size: 16.5px; }
  .doc { padding: 36px 0 56px; }
  .doc-head h1 { font-size: 32px; }
  .prose { font-size: 16px; }
  .prose h2 { font-size: 21px; margin-top: 36px; }
  .foot-top { align-items: flex-start; }
  .foot-bottom { display: block; }
  .foot-bottom p + p { margin-top: 6px; }
  .err { padding: 60px 0 70px; }
}

@media (max-width: 480px) {
  .grid { grid-template-columns: 1fr; }
  .card .shot { aspect-ratio: 4 / 5; }
  .card .shot img { object-position: center 38%; }
  .hero h1 { font-size: 31px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    transition-duration: .01ms !important;
  }
}