/* Offline Convert — 站点样式
   三页共用。设计锚点:App Icon 的胶片齿孔与蓝→青渐变。
   外部字体会被 CSP(default-src 'self')拦掉,所以排版全在系统字体栈里做:
   拉丁走等宽(格式名本就该像文件名),中文回退到苹方。 */

:root {
  --film:   #0b1620;   /* 胶片黑 */
  --ink:    #0e1a24;
  --muted:  #5c6b78;
  --paper:  #eef3f6;   /* 冷灰白,略带色,好让白卡片浮起来 */
  --card:   #ffffff;
  --line:   #d9e3ea;
  --accent:      #0f6bc0;
  --accent-soft: #3d6d90;  /* eyebrow 是小字,要 4.5:1 —— 浅蓝到不了 */
  --shadow: 0 20px 46px -22px rgba(20,50,70,.42);
  --sky:    #2a91f1;   /* 取自 App Icon 左上 */
  --aqua:   #1cc4d3;   /* 取自 App Icon 右下 */
  --link:   #0f6bc0;   /* 比 icon 蓝更暗:#2a91f1 在冷白上只有 3.0:1,正文链接要 4.5:1 */

  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, "PingFang SC", monospace;
  --body: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink:   #e6edf3;
    --muted: #90a4b5;
    --paper: #0b1620;
    --card:  #13202b;
    --line:  #22323f;
    --link:  #5cc2ef;
    --accent:      #6fc3e8;
    --accent-soft: #8fb4cc;
    --shadow: 0 20px 46px -22px rgba(0,0,0,.6);
  }
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 16px/1.75 var(--body);
}

.wrap {
  max-width: 780px;
  margin: 0 auto;
  padding: 52px 24px 96px;
}

/* 法务页是长文:780px 下每行约 43 个中文字,超出舒适区上限,收到约 38 字 */
.wrap.doc { max-width: 700px; }

/* —— 排版 —— */
h1 {
  font-family: var(--mono);
  font-size: clamp(26px, 5.2vw, 34px);
  line-height: 1.25;
  letter-spacing: -0.02em;
  font-weight: 600;
  margin: 0 0 8px;
}

h2 {
  font-family: var(--mono);
  font-size: 15px;
  /* 拉丁小标题需要字距撑开,中文不需要 —— 0.08em 会把「我们收集的信息」拉成散字,取折中 */
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--muted);
  margin: 52px 0 12px;
}

p, li { margin: 0 0 14px; }
ul { padding-left: 20px; }
li { margin-bottom: 8px; }

a { color: var(--link); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:focus-visible,
button:focus-visible { outline: 2px solid var(--link); outline-offset: 3px; border-radius: 3px; }

strong { font-weight: 650; }

.meta {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 28px;
}

/* 开篇那句要能一眼读完,比正文重一档但不喧宾夺主 */
.lede { font-size: 17px; }

hr {
  border: 0;
  border-top: 1px solid var(--line);
  margin: 56px 0 44px;
}

code {
  font-family: var(--mono);
  font-size: .9em;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 1px 5px;
}

/* 从 App Store 和 App 内设置页会直接落到法务页 —— 没有它就只能靠浏览器后退 */
.back {
  display: inline-block;
  font-family: var(--mono);
  font-size: 13px;
  color: var(--muted);
  text-decoration: none;
  margin-bottom: 32px;
}
.back:hover { color: var(--link); }

footer {
  margin-top: 64px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 13px;
  color: var(--muted);
}
footer a { color: var(--muted); }

/* ============ 首页:一屏式(不滚动)============
   版式沿用 wearwhat:左侧 lead + 功能格 + 下载区,右侧手机截图轮播,底部一行链接。
   轮播用 radio + label 做,不引 JS —— 站点 CSP 是 script-src 'none',
   补图时只要往 .slide 里塞 <img> 即可,不必碰脚本或放开 CSP。 */

.page {
  min-height: 100dvh;
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  padding: clamp(14px,2.2vh,22px) clamp(20px,4.5vw,52px) clamp(12px,1.8vh,20px);
}

.top {
  flex: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brandmark {
  display: flex;
  align-items: center;
  gap: 11px;
  font-family: var(--mono);
  font-size: 19px;
  font-weight: 600;
  letter-spacing: -.01em;
}
.brandmark img { width: 34px; height: 34px; border-radius: 9px; display: block; }

.stage {
  flex: 1;
  min-height: 0;
  display: grid;
  grid-template-columns: auto auto;
  justify-content: center;
  gap: clamp(32px,4vw,64px);
  align-items: center;
  padding: 0;
}

.info {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: clamp(22px,3.4vh,38px);
  width: min(700px,58vw);
  height: min(84dvh,700px);
}

.eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .28em;
  text-transform: uppercase;
  color: var(--accent-soft);
  font-weight: 600;
  margin: 0 0 clamp(10px,1.6vh,16px);
}

.info h1 {
  font-size: clamp(34px,6.4vh,60px);
  line-height: 1.12;
  margin: 0 0 clamp(12px,1.8vh,18px);
  text-wrap: balance;
}
.info h1 .hl { color: var(--accent); }

.info .lede { font-size: clamp(15px,2vh,19px); color: var(--muted); max-width: 620px; margin: 0; }

/* 功能格:2×2,第一格是主功能,用渐变压住视觉重心 */
.feats { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; max-width: 560px; }
.feats .cell {
  display: flex;
  gap: 12px;
  align-items: center;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 15px;
  padding: clamp(10px,1.5vh,14px) 15px;
}
.feats .cell.lead {
  background: linear-gradient(135deg,var(--sky),#0f6bc0);
  border: 0;
  color: #fff;
}
.feats .cell.lead p { color: rgba(255,255,255,.85); }
.feats .ic { width: 32px; height: 32px; flex: none; color: var(--accent); }
.feats .cell.lead .ic { color: #fff; }
.feats .ic svg { width: 30px; height: 30px; display: block; }
.feats h3 { font-family: var(--mono); font-size: 17px; font-weight: 600; margin: 0 0 2px; line-height: 1.15; }
.feats p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.35; }

/* 下载区:二维码待补,先留出真实尺寸的位置,免得补图后版面跳动 */
.getit { display: flex; align-items: flex-start; gap: clamp(16px,2.4vw,26px); flex-wrap: wrap; }
.qr { text-align: center; }
.qr .frame {
  background: var(--card);
  border-radius: 14px;
  width: clamp(118px,13vh,140px);
  height: clamp(118px,13vh,140px);
  box-shadow: 0 8px 18px -12px rgba(20,50,70,.4);
  display: grid;
  place-items: center;
}
.qr .frame.empty {
  background: transparent;
  border: 1px dashed var(--line);
  box-shadow: none;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .04em;
  text-align: center;
  padding: 8px;
  line-height: 1.5;
}
.qr .cap {
  margin: 7px 0 0;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 600;
}

/* —— 右侧轮播 —— */
.showcase { display: flex; flex-direction: column; align-items: flex-end; justify-content: center; min-height: 0; }
.phonebox { position: relative; display: flex; flex-direction: column; align-items: center; }
.phonebox::before {
  content: "";
  position: absolute;
  inset: -3% -12% 3%;
  z-index: -1;
  background: radial-gradient(58% 60% at 50% 50%,
              color-mix(in srgb,var(--sky) 22%,transparent), transparent 72%);
  filter: blur(10px);
}

.carousel { position: relative; height: min(80dvh,660px); aspect-ratio: 1272/2772; max-width: 100%; }
/* radio 本体不参与布局,但要能被键盘聚焦 —— 焦点环画在对应的 label 上 */
.carousel input { position: absolute; width: 1px; height: 1px; opacity: 0; pointer-events: none; }

.slides { position: absolute; inset: 0; }
.slide {
  position: absolute;
  inset: 0;
  border-radius: 32px;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  opacity: 0;
  transition: opacity .9s ease;
  overflow: hidden;
  background: var(--card);
}
.slide img { width: 100%; height: 100%; object-fit: cover; display: block; }
/* 截图待补:占位保持与真实截图完全相同的尺寸与圆角 */
.slide.empty {
  display: grid;
  place-items: center;
  border-style: dashed;
  box-shadow: none;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 13px;
  text-align: center;
  padding: 24px;
  line-height: 1.7;
}

/* 每多一张就在这两组里各加一行 */
#sl1:checked ~ .slides .slide:nth-child(1),
#sl2:checked ~ .slides .slide:nth-child(2),
#sl3:checked ~ .slides .slide:nth-child(3),
#sl4:checked ~ .slides .slide:nth-child(4),
#sl5:checked ~ .slides .slide:nth-child(5) { opacity: 1; }

.dots { position: absolute; top: 100%; left: 0; right: 0; display: flex; gap: 8px; justify-content: center; margin-top: clamp(10px,1.6vh,16px); }
.dots label {
  width: 8px; height: 8px;
  border-radius: 99px;
  background: var(--accent-soft);
  opacity: .4;
  cursor: pointer;
  transition: .25s;
}
.dots label:hover { opacity: .7; }
#sl1:checked ~ .dots label:nth-child(1),
#sl2:checked ~ .dots label:nth-child(2),
#sl3:checked ~ .dots label:nth-child(3),
#sl4:checked ~ .dots label:nth-child(4),
#sl5:checked ~ .dots label:nth-child(5) { opacity: 1; width: 22px; background: var(--accent); }
.carousel input:focus-visible + .slides ~ .dots label { outline: none; }
#sl1:focus-visible ~ .dots label:nth-child(1),
#sl2:focus-visible ~ .dots label:nth-child(2),
#sl3:focus-visible ~ .dots label:nth-child(3),
#sl4:focus-visible ~ .dots label:nth-child(4),
#sl5:focus-visible ~ .dots label:nth-child(5) { outline: 2px solid var(--accent); outline-offset: 3px; }

/* —— 底部:链接、隐私、邮箱 —— */
.foot {
  flex: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 12px;
  border-top: 1px solid var(--line);
  padding-top: clamp(8px,1.4vh,14px);
  margin-top: 0;
}
.foot .links { display: flex; gap: 18px; flex-wrap: wrap; }
.foot a { color: var(--muted); text-decoration: none; }
.foot a:hover { color: var(--ink); text-decoration: underline; }

/* —— 窄屏:改为纵向滚动,并把下载入口提到截图前面 —— */
@media (max-width: 1199px) {
  .page { min-height: 0; }
  .stage { grid-template-columns: 1fr; justify-content: normal; padding: 26px 0; gap: clamp(20px,3.4vh,30px); }
  /* .showcase 是 .info 的兄弟,要插到 lead 和功能格之间,就得让 .info 的子元素
     直接参与 .stage 的排序 —— 用 display:contents 把这一层摊平 */
  .info { display: contents; }
  .lead-group { order: 1; }
  .getit { order: 2; }
  .showcase { order: 3; align-items: center; }
  .feats { order: 4; max-width: none; }
  .carousel { height: min(52vh,440px); }
  .info h1 { font-size: clamp(30px,8vw,46px); }
  /* 二维码在手机上没有意义 —— 用户已经在手机上了 */
  .qr .frame, .qr .cap { display: none; }
}

@media (max-width: 30rem) {
  .feats { grid-template-columns: 1fr; }
}


/* —— 支持页 —— */
.contact {
  background: var(--card);
  border: 1px solid var(--line);
  border-left: 3px solid var(--sky);
  border-radius: 0 10px 10px 0;
  padding: 18px 20px;
  margin: 24px 0 8px;
}
.contact p:last-child { margin-bottom: 0; }

.q {
  font-weight: 650;
  margin: 30px 0 4px;
}

/* —— 动效:只给首屏那一次编排,其余保持安静 —— */
@media (prefers-reduced-motion: no-preference) {
  .conversions .row {
    animation: rise .55s cubic-bezier(.2,.7,.3,1) backwards;
  }
  .row:nth-child(1) { animation-delay: .06s; }
  .row:nth-child(2) { animation-delay: .13s; }
  .row:nth-child(3) { animation-delay: .20s; }
  .row:nth-child(4) { animation-delay: .27s; }
}

@keyframes rise {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: none; }
}