/*
  mirainami.com 样式 / Site styles

  取材自 app 本身（2026-10-14）：暖纸色底（与上架截图同一底色）、青铜金属的强调色、
  鼠尾草绿的 LCD（app 图标与字幕屏的颜色 170,181,152）。LCD 在深色模式下也保持本色——它是"一块屏"，不随主题翻转。
  字体只用系统字体：不加载任何外部字体（与"不追踪"的承诺一致，Google Fonts 也会把访客 IP 交给第三方）。
  Palette from the app: warm paper ground, bronze accent, sage LCD. System fonts only — no third-party requests.
*/

:root {
  --ground: #f3eee3;
  --surface: #fbf8f1;
  --ink: #23251f;
  --muted: #5b5d53;
  --line: #ddd4c1;
  --bronze: #8f6528;
  --bronze-soft: #c39a5a;
  --metal: #2a2925;
  --metal-ink: #efe9dc;
  --lcd: #aab598;
  --lcd-ink: #1d2617;
  --lcd-dim: #4a5640;
  --focus: #8f6528;
  --radius: 14px;
  --sans: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic UI", "Noto Sans JP", "Segoe UI", Roboto, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, "Hiragino Sans", monospace;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --ground: #181915;
    --surface: #212219;
    --ink: #ece7da;
    --muted: #aba796;
    --line: #35352d;
    --bronze: #d6a961;
    --bronze-soft: #a77f40;
    --metal: #0f100d;
    --metal-ink: #ece7da;
    --focus: #d6a961;
  }
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font: 17px/1.65 var(--sans);
  padding-inline: max(16px, env(safe-area-inset-left));
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--bronze); text-underline-offset: 3px; }
a:focus-visible, summary:focus-visible { outline: 2px solid var(--focus); outline-offset: 3px; border-radius: 6px; }
h1, h2, h3 { line-height: 1.25; text-wrap: balance; margin: 0; }
p { margin: 0; }
.skip { position: absolute; left: -999px; }
.skip:focus { left: 16px; top: 8px; background: var(--surface); padding: 8px 12px; z-index: 10; }

/* ---------- header / footer ---------- */
.top, main, .foot { max-width: 1080px; margin-inline: auto; }
.top {
  display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  padding-block: max(14px, env(safe-area-inset-top)) 14px;
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-weight: 700; letter-spacing: .02em; }
.brand img { border-radius: 8px; }
.top-nav { display: flex; gap: 20px; flex-wrap: wrap; font-size: 15px; }
.top-nav a { color: var(--muted); text-decoration: none; }
.top-nav a:hover, .top-nav a[aria-current="page"] { color: var(--ink); }
.top-nav .lang { color: var(--bronze); }

.foot { border-top: 1px solid var(--line); margin-top: 72px; padding-block: 28px max(28px, env(safe-area-inset-bottom)); font-size: 14px; color: var(--muted); display: grid; gap: 10px; }
.foot-name { color: var(--ink); font-weight: 600; }
.foot-name span { color: var(--muted); font-weight: 400; margin-left: 6px; }
.foot-links { display: flex; flex-wrap: wrap; gap: 8px 20px; }
.foot-links a { color: var(--muted); }

/* ---------- shared blocks ---------- */
section { margin-top: 72px; }
.eyebrow { font-size: 13px; letter-spacing: .12em; text-transform: uppercase; color: var(--bronze); font-weight: 600; }
.lead { font-size: 19px; color: var(--muted); max-width: 36em; }
.section-head { display: grid; gap: 10px; margin-bottom: 28px; max-width: 40em; }
.section-head h2 { font-size: clamp(26px, 4vw, 34px); }

.store {
  display: inline-flex; align-items: center; gap: 10px;
  background: var(--metal); color: var(--metal-ink); border-radius: 12px;
  padding: 12px 18px; font-size: 15px; text-decoration: none; font-weight: 600;
}
.store small { display: block; font-size: 11px; font-weight: 400; opacity: .75; letter-spacing: .04em; }

/* ---------- hero ---------- */
.hero { display: grid; grid-template-columns: 1.05fr 1fr; gap: 48px; align-items: center; margin-top: 56px; }
.hero h1 { font-size: clamp(34px, 5.4vw, 56px); letter-spacing: -.01em; }
.hero .copy { display: grid; gap: 22px; }
.hero .app-id { display: flex; align-items: center; gap: 14px; }
.hero .app-id img { width: 64px; height: 64px; border-radius: 15px; box-shadow: 0 2px 10px rgb(0 0 0 / .18); }
.hero .app-id b { display: block; font-size: 18px; }
.hero .app-id span { color: var(--muted); font-size: 14px; }

/* LCD：照 app 字幕屏的样子（顶栏语言对 + 计时、上半屏倒转给对方、下半屏给自己） */
.lcd {
  background: var(--lcd); color: var(--lcd-ink);
  border-radius: 18px; padding: 14px 16px 18px;
  border: 6px solid var(--metal);
  box-shadow: inset 0 2px 0 rgb(255 255 255 / .35), 0 10px 30px rgb(0 0 0 / .18);
  font-family: var(--sans);
}
.lcd-bar { display: flex; justify-content: space-between; font: 600 13px/1.4 var(--mono); padding-bottom: 8px; border-bottom: 1px solid rgb(29 38 23 / .25); }
.lcd-row { background: rgb(255 255 255 / .16); border-radius: 10px; padding: 9px 12px; margin-top: 8px; font-size: 17px; line-height: 1.45; }
.lcd-row.peer { transform: rotate(180deg); }
.lcd-split { border-top: 1px solid rgb(29 38 23 / .25); margin-top: 10px; }
.lcd-note { font-size: 12px; color: var(--lcd-dim); margin-top: 10px; }

/* ---------- points (three reasons) ---------- */
.points { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.point { display: grid; gap: 8px; align-content: start; padding-top: 16px; border-top: 2px solid var(--bronze-soft); }
.point h3 { font-size: 19px; }
.point p { color: var(--muted); font-size: 16px; }

/* ---------- screenshots ---------- */
.shots { display: grid; grid-auto-flow: column; grid-auto-columns: minmax(200px, 1fr); gap: 16px; overflow-x: auto; padding-bottom: 10px; scroll-snap-type: x mandatory; }
.shots img { border-radius: 18px; scroll-snap-align: start; box-shadow: 0 4px 18px rgb(0 0 0 / .12); }

/* ---------- features (product page) ---------- */
.feature { display: grid; grid-template-columns: 1fr 260px; gap: 40px; align-items: center; padding-block: 28px; border-top: 1px solid var(--line); }
.feature:nth-of-type(even) { grid-template-columns: 260px 1fr; }
.feature:nth-of-type(even) .text { order: 2; }
.feature .text { display: grid; gap: 10px; }
.feature h3 { font-size: 24px; }
.feature .tab { font: 600 13px/1 var(--mono); color: var(--bronze); letter-spacing: .06em; }
.feature p { color: var(--muted); }
.feature img { border-radius: 18px; box-shadow: 0 4px 18px rgb(0 0 0 / .12); }

/* ---------- panels ---------- */
.panel { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; }
.panel.dark { background: var(--metal); color: var(--metal-ink); border-color: transparent; }
.panel.dark p, .panel.dark li { color: color-mix(in srgb, var(--metal-ink) 80%, transparent); }
.panel h2 { font-size: clamp(24px, 3.4vw, 30px); margin-bottom: 14px; }
.panel ul { margin: 14px 0 0; padding-left: 1.2em; display: grid; gap: 6px; }

.langs { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; padding: 0; margin: 0; }
.langs li { border: 1px solid var(--line); border-radius: 999px; padding: 4px 12px; font-size: 15px; background: var(--surface); }
.langs li span { color: var(--muted); font-size: 13px; margin-left: 6px; }

.two { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.facts { display: grid; grid-template-columns: max-content 1fr; gap: 10px 24px; margin: 0; }
.facts dt { color: var(--muted); }
.facts dd { margin: 0; }

/* ---------- FAQ ---------- */
.faq { display: grid; gap: 0; max-width: 46em; }
.faq details { border-top: 1px solid var(--line); padding-block: 16px; }
.faq details:last-child { border-bottom: 1px solid var(--line); }
.faq summary { cursor: pointer; font-weight: 600; font-size: 18px; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--bronze); font-weight: 400; }
.faq details[open] summary::after { content: "–"; }
.faq details > div { margin-top: 10px; color: var(--muted); display: grid; gap: 10px; }

/* ---------- legal ---------- */
.legal { max-width: 46em; margin-top: 48px; }
.legal h1 { font-size: clamp(28px, 4vw, 38px); }
.legal h1 + p { color: var(--muted); margin-top: 8px; }
.legal h2 { font-size: 21px; margin-top: 36px; }
.legal p, .legal ul, .legal ol { margin-top: 12px; }
.legal li { margin-top: 6px; }

/* ---------- responsive ---------- */
@media (max-width: 820px) {
  .hero { grid-template-columns: 1fr; gap: 32px; margin-top: 36px; }
  .points { grid-template-columns: 1fr; gap: 20px; }
  .feature, .feature:nth-of-type(even) { grid-template-columns: 1fr; gap: 20px; }
  .feature:nth-of-type(even) .text { order: 0; }
  .feature img { max-width: 260px; }
  .two { grid-template-columns: 1fr; }
  .shots { grid-auto-columns: 62%; }
  section { margin-top: 56px; }
}
@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}