/* DisplayPilot 站点样式
   版式：大标题 / 大留白 / 居中 Hero / 交替 section —— 骨架参考 Apple 官网的节奏。
   质感：色值、圆角、阴影取自应用本体 Sources/DisplayPilot/UI/Theme.swift 与
        UI/NeuSurfaces.swift 的拟态配方（四层阴影 + 硬发丝边 + 凹陷）。
   不引入外部字体、图标库、跟踪资源；无框架，只有 site.js 里的几行原生 JS。 */

:root {
  /* ── 材质（Palette） ── */
  --canvas: #E2DED9;
  --surface: #F2EFEA;
  --sunken: #D2CEC7;
  --ridge: #D6D1CB;
  --light: #FAF7F5;
  --dark: #B8B2A9;
  --dark-strong: #A9A29A;

  /* ── 墨色（Palette 四级 + 画布上更安全的柔和档） ── */
  --ink: #26221E;
  --ink-strong: #3D3833;
  --ink-soft: #57514A;   /* 介于 inkStrong 与 inkMuted 之间：画布上 >= 4.5:1 */
  --ink-muted: #6B645C;  /* 只用在 surface 上（画布上只有 4.36:1） */

  /* ── 爱马仕橙 ── */
  --hermes: #F37021;        /* 装饰：圆点、刻度 */
  --hermes-deep: #B8480F;   /* 大字号与按钮底色（白字 5.3:1） */
  --hermes-link: #9A3C0E;   /* 正文里的橙色文字：画布上 5.2:1 */
  --hermes-soft: #FBD9C4;
  --hermes-wash: #FDF0E8;

  /* ── 拟态四层阴影（NeuSurfaces.Shadow）：紧暗 + 紧亮勾边，宽暗 + 宽亮浮起 ── */
  --raise-tiny: 1.5px 1.5px 1px var(--dark), -1px -1px .5px #fff,
                3px 3px 5px rgba(184,178,169,.30), -2.5px -2.5px 4px rgba(255,255,255,.55);
  --raise-sm: 2px 2px 1px var(--dark), -1.5px -1.5px .5px #fff,
              4px 4px 7px rgba(184,178,169,.30), -3px -3px 6px rgba(255,255,255,.55);
  --raise: 2.5px 2.5px 1px var(--dark), -2px -2px .5px #fff,
           8px 10px 14px rgba(184,178,169,.32), -6px -6px 10px rgba(255,255,255,.55);
  --raise-lg: 3px 3px 1px var(--dark), -2.5px -2.5px .5px #fff,
              10px 12px 16px rgba(184,178,169,.32), -7px -7px 12px rgba(255,255,255,.55);
  --sink-sm: inset 2px 2px 5px rgba(184,178,169,.85), inset -2px -2px 5px rgba(255,255,255,.9);
  --sink: inset 3px 3px 7px rgba(184,178,169,.85), inset -3px -3px 7px rgba(255,255,255,.9);

  --r-plate: 34px; --r-card: 26px; --r-ctl: 18px;
  --page: min(1120px, 100% - 3rem);
  --sec: clamp(4.5rem, 9vw, 8.75rem);   /* section 上下留白 72 → 140px */
}

*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }

html { background: var(--canvas); -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--canvas); color: var(--ink-strong);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC",
               "Helvetica Neue", Arial, sans-serif;
  font-size: 17px; line-height: 1.7;
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; height: auto; }
h1, h2, h3 { margin: 0; color: var(--ink); }
p { margin: 0; }
a { color: var(--hermes-link); text-underline-offset: 3px; }
a:hover { color: var(--hermes-deep); }
code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: .88em; }
:focus-visible { outline: 2px solid var(--hermes-deep); outline-offset: 3px; border-radius: 6px; }
.wrap { width: var(--page); margin-inline: auto; }
.tid { font-variant-numeric: tabular-nums; }
.skip {
  position: absolute; left: -9999px; top: 0; z-index: 99;
  background: var(--surface); padding: .6rem 1rem; border-radius: 12px; box-shadow: var(--raise-sm);
}
.skip:focus { left: 1rem; top: .7rem; }

/* ── 拟态基元：凸起表面 + 硬发丝边（Neu.hardEdge） ── */
.neu { position: relative; }
.neu::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit; padding: 1px; pointer-events: none;
  background: linear-gradient(135deg, #fff 0, rgba(255,255,255,.9) 18%, rgba(255,255,255,0) 35%,
              rgba(255,255,255,0) 65%, rgba(184,178,169,.85) 85%, #B8B2A9 100%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  mask-composite: exclude;
}
.neu-sink::before {
  background: linear-gradient(135deg, rgba(184,178,169,.85), rgba(255,255,255,.95));
}
.plate { background: var(--surface); border-radius: var(--r-plate); box-shadow: var(--raise-lg); }
.card  { background: var(--surface); border-radius: var(--r-card);  box-shadow: var(--raise); }
.sunk  { background: var(--sunken);  border-radius: var(--r-card);  box-shadow: var(--sink); }

/* ── 粘性半透明顶栏 ── */
.nav {
  position: sticky; top: 0; z-index: 40;
  background: rgba(226,222,217,.78); border-bottom: 1px solid transparent;
  -webkit-backdrop-filter: saturate(180%) blur(18px);
  backdrop-filter: saturate(180%) blur(18px);
  transition: border-color .25s ease;
}
.nav.is-scrolled { border-bottom-color: rgba(38,34,30,.10); }
.nav-in { display: flex; align-items: center; gap: 1.5rem; height: 52px; }
.brand {
  display: flex; align-items: center; gap: .5rem; text-decoration: none;
  color: var(--ink); font-weight: 650; font-size: 1rem; letter-spacing: -.012em;
}
.brand img { width: 24px; height: 24px; border-radius: 6px; box-shadow: var(--raise-tiny); }
.nav-links { display: flex; gap: 1.6rem; margin-left: auto; }
.nav-links a { color: var(--ink-strong); text-decoration: none; font-size: .86rem; letter-spacing: -.005em; }
.nav-links a:hover { color: var(--hermes-deep); }

/* ── CTA 按钮 ── */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: .8rem 1.55rem; border-radius: var(--r-ctl); text-decoration: none;
  font-weight: 640; font-size: 1rem; letter-spacing: -.012em; line-height: 1.3;
  transition: box-shadow .16s ease, background-color .16s ease, transform .16s ease;
}
.btn-sm { padding: .45rem 1.05rem; font-size: .84rem; border-radius: 14px; }
.btn-primary {
  color: #fff; background: var(--hermes-deep);
  box-shadow: 4px 4px 10px rgba(184,178,169,.75), -3px -3px 8px rgba(255,255,255,.6),
              inset 0 1px 0 rgba(255,255,255,.28);
}
.btn-primary:hover {
  background: #A03E0C; color: #fff;
  box-shadow: 6px 6px 14px rgba(184,178,169,.8), -5px -5px 12px rgba(255,255,255,.65),
              inset 0 1px 0 rgba(255,255,255,.28);
}
.btn-primary:active { transform: translateY(1px); box-shadow: var(--sink-sm), inset 0 1px 0 rgba(255,255,255,.2); }
.btn-ghost { color: var(--ink); background: var(--surface); box-shadow: var(--raise-sm); }
.btn-ghost:hover { color: var(--ink); box-shadow: var(--raise); }
.btn-ghost:active { transform: translateY(1px); box-shadow: var(--sink-sm); }

/* ── 1. Hero ── */
.hero { padding: clamp(3.5rem, 7vw, 6.5rem) 0 clamp(3rem, 6vw, 5.5rem); text-align: center; }
.hero h1 {
  font-size: clamp(2.55rem, 6vw, 4.5rem);
  font-weight: 700; letter-spacing: -.038em; line-height: 1.06; text-wrap: balance;
}
.hero .sub {
  margin-top: .5rem; font-size: clamp(1.5rem, 3.4vw, 2.55rem);
  font-weight: 600; letter-spacing: -.032em; color: var(--ink-soft);
}
.hero .lede {
  max-width: 36rem; margin: 1.7rem auto 0; color: var(--ink-soft);
  font-size: clamp(1.02rem, 1.5vw, 1.18rem); line-height: 1.68;
}
.hero-cta { display: flex; flex-wrap: wrap; gap: .9rem; justify-content: center; margin-top: 2.3rem; }
.hero-spec { margin-top: 1.7rem; color: var(--ink-soft); font-size: .9rem; }
.hero-shot { width: min(600px, 100%); margin: clamp(2.5rem, 5vw, 4rem) auto 0; padding: 14px; }
.hero-shot img {
  width: 100%; height: clamp(360px, 56vh, 600px);
  object-fit: cover; object-position: top center;
  border-radius: calc(var(--r-plate) - 12px);
  -webkit-mask-image: linear-gradient(#000 80%, rgba(0,0,0,.18));
  mask-image: linear-gradient(#000 80%, rgba(0,0,0,.18));
}

/* ── 2. 一句话价值主张 ── */
.statement { padding: var(--sec) 0; text-align: center; }
.statement .big {
  max-width: 24ch; margin-inline: auto; text-wrap: balance;
  font-size: clamp(1.45rem, 3.5vw, 2.5rem); font-weight: 640;
  letter-spacing: -.028em; line-height: 1.32; color: var(--ink);
}
.statement .small {
  max-width: 46ch; margin: 1.6rem auto 0;
  color: var(--ink-soft); font-size: clamp(1rem, 1.3vw, 1.08rem);
}

/* ── 3-6. 交替式功能 section ── */
.feature {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 5vw, 4.5rem); align-items: center; padding-bottom: var(--sec);
}
.feature:nth-child(even) .f-media { order: -1; }
.f-eyebrow {
  font-size: .8rem; font-weight: 650; letter-spacing: .09em;
  text-transform: uppercase; color: var(--hermes-link);
}
.f-title {
  margin-top: .65rem; text-wrap: balance;
  font-size: clamp(1.7rem, 3.1vw, 2.5rem); font-weight: 680;
  letter-spacing: -.032em; line-height: 1.14;
}
.f-body { margin-top: 1.25rem; color: var(--ink-soft); font-size: clamp(1rem, 1.25vw, 1.09rem); }
.f-body code { background: var(--sunken); padding: .1em .35em; border-radius: 6px; color: var(--ink); }
.f-note {
  margin-top: 1.5rem; padding: 1.05rem 1.2rem; border-radius: var(--r-ctl);
  color: var(--ink-soft); font-size: .92rem; line-height: 1.72;
}
.f-note strong { color: var(--ink-strong); }
.f-media { margin: 0; padding: 12px; width: fit-content; max-width: 100%; justify-self: center; }
.f-media img { border-radius: calc(var(--r-card) - 10px); }
.f-media.tall img { width: min(320px, 100%); }
.f-media.wide { width: 100%; }
.f-media.wide img {
  width: 100%; height: clamp(320px, 46vh, 470px);
  object-fit: cover; object-position: bottom center;
}
.f-media figcaption { margin: .9rem .35rem .2rem; color: var(--ink-soft); font-size: .86rem; line-height: 1.6; }

/* 仪表：凹陷槽 + 巨大读数（复用应用里那套「凹槽读数」语言） */
.instrument { width: 100%; padding: clamp(1.1rem, 2.6vw, 1.7rem); display: grid; gap: .8rem; }
.gauge { padding: 1rem 1.15rem; border-radius: var(--r-ctl); display: flex; align-items: baseline; gap: .7rem; flex-wrap: wrap; }
.gauge .k { flex: none; min-width: 3.4rem; font-size: .78rem; font-weight: 650; letter-spacing: .07em; color: var(--ink-soft); }
.gauge .v { font-size: clamp(1.45rem, 2.5vw, 1.95rem); font-weight: 700; letter-spacing: -.032em; color: var(--ink); }
.gauge .u { font-size: .84rem; color: var(--ink-soft); }

/* ── 7. 三个小功能横排 ── */
.trio { padding-bottom: 0; }
.trio-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(1.1rem, 2.4vw, 1.9rem); }
.tcard { padding: 1.7rem 1.75rem 1.8rem; border-radius: var(--r-card); }
.tcard .dot { display: block; width: 9px; height: 9px; border-radius: 50%; background: var(--hermes); box-shadow: 0 0 0 4px var(--hermes-wash); margin-bottom: 1.15rem; }
.tcard h3 { font-size: 1.14rem; font-weight: 680; letter-spacing: -.022em; }
.tcard p { margin-top: .75rem; color: var(--ink-soft); font-size: .94rem; line-height: 1.72; }

/* ── 8. 价格：凹槽 + 巨大读数 + 诚实的状态块 ── */
.price { padding: var(--sec) 0; }
.sec-head { text-align: center; margin-bottom: clamp(2rem, 4vw, 3rem); }
.sec-head h2 { font-size: clamp(1.9rem, 3.6vw, 2.9rem); font-weight: 680; letter-spacing: -.034em; line-height: 1.12; }
.sec-head p { max-width: 40rem; margin: 1rem auto 0; color: var(--ink-soft); font-size: clamp(1rem, 1.3vw, 1.08rem); }
.price-plate { width: min(680px, 100%); margin-inline: auto; padding: clamp(1.5rem, 4vw, 2.5rem); }
.price-readout { display: flex; align-items: baseline; gap: .6rem; padding: 1.05rem 1.5rem; border-radius: var(--r-card); }
.price-readout .num { font-size: clamp(3.2rem, 9vw, 4.6rem); font-weight: 700; letter-spacing: -.048em; line-height: 1; color: var(--ink); }
.price-readout .unit { font-size: 1.25rem; font-weight: 600; color: var(--ink-soft); }
.price-label { margin-top: 1.1rem; font-size: 1.02rem; font-weight: 620; color: var(--ink-strong); }
.ticks { margin: 1.4rem 0 0; padding: 0; list-style: none; }
.ticks li { position: relative; padding-left: 1.5rem; margin-bottom: .6rem; color: var(--ink-soft); font-size: .94rem; line-height: 1.7; }
.ticks li::before { content: ""; position: absolute; left: .15rem; top: .6em; width: 7px; height: 7px; border-radius: 50%; background: var(--hermes); }
.buy { display: flex; flex-direction: column; align-items: flex-start; gap: 1.1rem; margin-top: 1.9rem; }
.buy-status {
  padding: 1.05rem 1.2rem; border-radius: var(--r-ctl); border-left: 3px solid var(--hermes);
  background: var(--canvas); color: var(--ink-soft); font-size: .92rem; line-height: 1.72;
}
.buy-status strong { color: var(--ink); }
.buy-status a { color: var(--hermes-link); }

/* ── 9. 系统要求（一行） ── */
.spec { padding: 0 0 var(--sec); text-align: center; }
.spec h2 { font-size: clamp(1.3rem, 2.2vw, 1.6rem); font-weight: 680; letter-spacing: -.026em; }
.spec-line { max-width: 58rem; margin: 1.1rem auto 0; color: var(--ink-soft); font-size: .95rem; line-height: 2; }

/* ── 10. 页脚 ── */
footer { padding: 3rem 0 4rem; text-align: center; }
.foot-links { display: flex; flex-wrap: wrap; gap: 1.4rem; justify-content: center; margin: 0 0 1.2rem; }
.foot-links a { color: var(--ink-strong); font-size: .9rem; text-decoration: none; }
.foot-links a:hover { color: var(--hermes-deep); }
.foot-note, .foot-copy { margin: 0; color: var(--ink-soft); font-size: .85rem; line-height: 1.75; }
.foot-copy { margin-top: .9rem; }

/* ── 文档页（privacy / eula / support） ── */
.doc { width: min(720px, 100% - 3rem); margin-inline: auto; padding: clamp(3rem, 7vw, 5rem) 0 var(--sec); }
.doc h1 { font-size: clamp(2.1rem, 5vw, 3.3rem); font-weight: 700; letter-spacing: -.036em; line-height: 1.08; }
.doc .updated { margin-top: .9rem; color: var(--ink-soft); font-size: .88rem; }
.doc .summary { margin-top: 2rem; padding: 1.3rem 1.5rem; border-radius: var(--r-card); color: var(--ink-strong); font-size: 1rem; line-height: 1.78; }
.doc h2 { display: flex; align-items: center; gap: .7rem; margin: 2.8rem 0 .9rem; font-size: 1.32rem; font-weight: 680; letter-spacing: -.022em; }
.doc h2::before { content: ""; flex: none; width: 8px; height: 8px; border-radius: 50%; background: var(--hermes); box-shadow: 0 0 0 4px var(--hermes-wash); }
.doc h3 { margin: 1.8rem 0 .5rem; font-size: 1.04rem; font-weight: 660; }
.doc p, .doc li { color: var(--ink-strong); font-size: 1rem; line-height: 1.8; overflow-wrap: anywhere; }
.doc p + p, .doc p + ul, .doc p + ol { margin-top: .8rem; }
.doc ul, .doc ol { margin: .7rem 0 0; padding-left: 1.3rem; }
.doc li + li { margin-top: .45rem; }
.doc strong { color: var(--ink); }
.doc code { background: var(--sunken); padding: .12em .4em; border-radius: 6px; color: var(--ink); overflow-wrap: anywhere; }
.doc pre { margin: .8rem 0 0; padding: .9rem 1.05rem; border-radius: var(--r-ctl); background: var(--sunken); box-shadow: var(--sink-sm); overflow-x: auto; }
.doc pre code { background: none; padding: 0; font-size: .82rem; line-height: 1.65; }
.doc .callout {
  margin-top: 1.4rem; padding: 1.05rem 1.25rem; border-radius: var(--r-ctl);
  border-left: 3px solid var(--hermes); background: var(--surface); box-shadow: var(--raise-sm);
  color: var(--ink-strong); font-size: .95rem; line-height: 1.75;
}
.doc .back { display: inline-block; margin-top: 2.8rem; font-size: .95rem; }
.doc-foot { padding: 2.5rem 0 3.5rem; }

/* ── 响应式 ── */
@media (max-width: 900px) {
  .feature { grid-template-columns: 1fr; gap: clamp(1.8rem, 4vw, 2.6rem); }
  .feature:nth-child(even) .f-media { order: 0; }
  .f-media.wide, .instrument { width: 100%; justify-self: stretch; }
  .trio-grid { grid-template-columns: 1fr; }
}
@media (max-width: 620px) {
  :root { --page: min(1120px, 100% - 2.25rem); --sec: clamp(3.5rem, 14vw, 5rem); }
  body { font-size: 16px; }
  .nav-links { display: none; }
  .hero h1 { letter-spacing: -.03em; }
  .hero-shot img { height: clamp(280px, 42vh, 420px); }
  .f-media { padding: 10px; }
  .f-media.tall img { width: min(280px, 100%); }
  .f-media.wide img { height: clamp(240px, 36vh, 360px); }
  .doc .summary, .doc .callout { padding: 1rem 1.1rem; }
}

/* 导航是 sticky（.nav），所以任何锚点目标都会被它盖住。
   5rem 按桌面导航（约 60–70px）留足，且宁可偏大——偏大只是多显示一点上文，
   偏小则标题正好藏在导航底下。用 [id] 而不是逐个 :target，
   这样以后新加的锚点自动生效。 */
[id] { scroll-margin-top: 5rem; }

/* ── 动效偏好 ── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; scroll-behavior: auto !important; }
  .btn-primary:active, .btn-ghost:active { transform: none; }
}

/* ── 11. 顶栏语言切换器（原生 details，无 JS 也能用） ── */
.lang { position: relative; flex: none; }
.lang > summary {
  list-style: none; cursor: pointer; display: inline-flex; align-items: center; gap: .4rem;
  padding: .45rem 1rem .45rem .8rem; border-radius: 14px;
  background: var(--surface); box-shadow: var(--raise-sm);
  color: var(--ink-strong); font-size: .84rem; font-weight: 600; letter-spacing: -.008em;
  white-space: nowrap;
}
.lang > summary::-webkit-details-marker { display: none; }
.lang > summary:hover { box-shadow: var(--raise); }
.lang[open] > summary { box-shadow: var(--sink-sm); }
.lang > summary::after {
  content: ""; width: .4rem; height: .4rem; flex: none;
  border-right: 1.5px solid var(--ink-soft); border-bottom: 1.5px solid var(--ink-soft);
  transform: rotate(45deg) translate(-1px, -1px); transition: transform .18s ease;
}
.lang[open] > summary::after { transform: rotate(225deg) translate(-1px, -1px); }
.lang-menu {
  position: absolute; right: 0; top: calc(100% + .55rem); min-width: 11.5rem;
  margin: 0; padding: .38rem; list-style: none; z-index: 60;
  background: var(--surface); border-radius: var(--r-ctl); box-shadow: var(--raise-lg);
}
.lang-menu a {
  display: block; padding: .48rem .75rem; border-radius: 12px;
  color: var(--ink-strong); text-decoration: none; font-size: .87rem;
}
.lang-menu a:hover { background: var(--sunken); color: var(--ink); }
.lang-menu a[aria-current="true"] { background: var(--hermes-wash); color: var(--hermes-link); font-weight: 650; }
.brand-name { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

@media (max-width: 620px) {
  .nav-in { gap: .55rem; }
  .lang { margin-left: auto; }
  .lang > summary { padding: .4rem .8rem .4rem .65rem; font-size: .8rem; }
  .lang-menu { min-width: 10.5rem; }
  .nav > .wrap > .btn-sm { padding: .4rem .75rem; font-size: .8rem; }
}
@media (max-width: 400px) {
  .brand-name { display: none; }
  .nav-in { gap: .45rem; }
  .lang > summary { padding: .38rem .7rem .38rem .6rem; }
}
@media (prefers-reduced-motion: reduce) {
  .lang > summary::after { transition: none; }
}

/* ── 文档表格（清理指南的分类表）：窄屏可横向滚动 ── */
.doc .table-wrap { margin-top: .9rem; overflow-x: auto; }
.doc table { width: 100%; border-collapse: collapse; font-size: .92rem; }
.doc th, .doc td { text-align: left; padding: .55rem .65rem; border-bottom: 1px solid var(--ridge); vertical-align: top; }
.doc thead th { color: var(--ink-strong); font-weight: 620; border-bottom-width: 2px; }
.doc td code { white-space: nowrap; }
@media (max-width: 620px) { .doc table { min-width: 520px; } }
/* ── 大陆可达的直接付款（不依赖任何接口）── */
.direct-pay { margin-top: 1.1rem; }
.direct-pay .qr-row { display: flex; gap: .9rem; flex-wrap: wrap; align-items: flex-start; margin: .5rem 0 0; }
.direct-pay .qr-row a { display: block; }
.direct-pay img { width: min(200px, 42vw); height: auto; background: #fff; border-radius: .7rem; box-shadow: 0 1px 2px rgba(0,0,0,.12); }
.direct-pay .qr-cap { font-size: .82rem; opacity: .75; margin: .35rem 0 0; }
/* ── 对比页表格 ── */
.alt-table { width: 100%; border-collapse: collapse; font-size: .9rem; }
.alt-table th, .alt-table td { text-align: left; padding: .55rem .6rem; border-bottom: 1px solid var(--ridge); vertical-align: top; }
.alt-table th { font-weight: 700; }
.alt-table tr > td:first-child { white-space: nowrap; opacity: .78; }
@media (max-width: 700px) { .alt-table { font-size: .78rem; } .alt-table th, .alt-table td { padding: .4rem .35rem; } }