/* =============================================================================
   鲜视运官网 · 站点样式（视觉参考 Apple 官网）
   取值来自 apple.com.cn 实测：字体栈 SF Pro SC / PingFang SC、正文 17px、
   正文色 #1d1d1f、次要色 #6e6e73、区块底色 #f5f5f7 / #fafafc、导航 44px + blur、
   按钮 980px 圆角胶囊、产品页大标题 56px / 首屏 h1 80px（字重 600）。

   只服务 www/ 下的官网页面。帮助中心 /download 用的是 assets/css/site.css（另一份），互不影响。
   ============================================================================= */
:root {
  --ink: #1d1d1f;
  --ink-2: #6e6e73;
  --ink-3: #86868b;
  --line: #d2d2d7;
  --bg: #ffffff;
  --bg-soft: #f5f5f7;
  --bg-softer: #fafafc;
  --blue: #0071e3;
  --blue-hover: #0077ed;
  --link: #0066cc;
  --link-dark: #2997ff;
  --radius: 18px;
  --radius-lg: 28px;
  --nav-h: 44px;
  --maxw: 1024px;
  --maxw-wide: 1180px;
  --font: "SF Pro SC", "SF Pro Text", "SF Pro Icons", "PingFang SC", "Helvetica Neue", Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html {
  background: var(--bg); -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 14px);   /* 锚点/跳转不被固定导航压住 */
}
:target { scroll-margin-top: calc(var(--nav-h) + 14px); }
::selection { background: rgba(0, 113, 227, .18); }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 17px/1.47 var(--font);
  -webkit-font-smoothing: antialiased;
  letter-spacing: 0;
}
img { max-width: 100%; display: block; }
a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; }
:focus-visible { outline: 3px solid rgba(0, 113, 227, .5); outline-offset: 3px; border-radius: 6px; }
[hidden] { display: none !important; }

/* ---------- 导航（44px 固定 + 毛玻璃）---------- */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 60;
  height: var(--nav-h);
  background: rgba(250, 250, 252, .8);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid rgba(0, 0, 0, .06);
}
.nav__in {
  max-width: var(--maxw); height: 100%; margin: 0 auto; padding: 0 22px;
  display: flex; align-items: center; gap: 28px;
}
.nav__brand { display: flex; align-items: center; gap: 9px; color: var(--ink); font-size: 15px; font-weight: 600; letter-spacing: -.01em; }
.nav__brand img { width: 22px; height: 22px; border-radius: 6px; }
.nav__links { display: none; margin-left: auto; gap: 26px; font-size: 12px; }
.nav__links a { color: var(--ink); opacity: .82; }
.nav__links a:hover { opacity: 1; text-decoration: none; }
.nav__links a[aria-current="page"] { opacity: 1; font-weight: 600; }
.nav__cta { display: none; margin-left: 4px; }
.nav__toggle {
  margin-left: auto; width: 34px; height: 34px; border: 0; background: none; cursor: pointer;
  display: inline-flex; flex-direction: column; align-items: center; justify-content: center; gap: 5px;
}
.nav__toggle span { display: block; width: 17px; height: 1.5px; background: var(--ink); transition: transform .25s, opacity .2s; }
.nav.is-open .nav__toggle span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav.is-open .nav__toggle span:nth-child(2) { opacity: 0; }
.nav.is-open .nav__toggle span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }
.nav__drawer {
  position: fixed; inset: var(--nav-h) 0 auto 0; z-index: 55;
  background: rgba(250, 250, 252, .97);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid rgba(0, 0, 0, .08);
  padding: 8px 22px 20px;
  display: none;
}
.nav__drawer.is-open { display: block; }
.nav__drawer a { display: block; padding: 13px 0; font-size: 17px; font-weight: 500; color: var(--ink); border-bottom: 1px solid rgba(0, 0, 0, .06); }
.nav__drawer a:last-child { border-bottom: 0; }
@media (min-width: 834px) {
  .nav__links { display: flex; }
  .nav__cta { display: inline-flex; }
  .nav__toggle { display: none; }
  .nav__drawer { display: none !important; }
}

/* ---------- 首屏（品牌卡 + 大字标题，呼应 App 启动页）---------- */
.hero { position: relative; overflow: hidden; padding: calc(var(--nav-h) + 40px) 0 26px; }
.hero::after {
  content: ""; position: absolute; z-index: 0; left: 50%; top: -220px; width: 900px; height: 700px;
  transform: translateX(-50%);
  background: radial-gradient(60% 60% at 50% 40%, rgba(0, 128, 245, .12) 0%, rgba(0, 128, 245, 0) 70%);
  pointer-events: none;
}
.hero__in {
  position: relative; z-index: 1; max-width: var(--maxw-wide); margin: 0 auto; padding: 0 22px;
  display: grid; gap: 32px; align-items: center; justify-items: center;
}
@media (min-width: 960px) {
  .hero__in { grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center; justify-items: start; }
}
.hero__copy { text-align: center; max-width: 620px; }
@media (min-width: 960px) { .hero__copy { text-align: left; } }
.hero__eyebrow { margin: 0 0 14px; font-size: 17px; font-weight: 600; color: var(--ink-2); }
.hero__title {
  margin: 0 0 18px;
  font-size: clamp(38px, 7vw, 72px); line-height: 1.06; font-weight: 600; letter-spacing: -.018em;
  text-wrap: balance;   /* 支持时按词义断行，标题不再出现孤字换行 */
}
.hero__title em { font-style: normal; color: var(--blue); }
.hero__sub { margin: 0; font-size: clamp(17px, 2vw, 20px); line-height: 1.5; color: var(--ink-2); }
.hero__cta { margin-top: 26px; display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }
@media (min-width: 960px) { .hero__cta { justify-content: flex-start; } }
.hero__note { margin: 16px 0 0; font-size: 14px; color: var(--ink-2); }

/* 品牌卡：与 App 启动画面同一张图（卡车 + 鲜视运 + 一路鲜达） */
.hero__card { width: min(440px, 100%); }
.hero__card img {
  width: 100%; height: auto; border-radius: 30px;
  border: 1px solid rgba(0, 0, 0, .05);
  box-shadow: 0 30px 60px rgba(16, 34, 56, .16);
}

.hero__facts {
  max-width: var(--maxw-wide); margin: 44px auto 0; padding: 22px 22px 0;
  border-top: 1px solid var(--line);
  display: grid; gap: 20px; grid-template-columns: repeat(2, 1fr); text-align: left;
}
@media (min-width: 834px) {
  .hero__facts { grid-template-columns: repeat(4, 1fr); gap: 0; }
  .hero__facts > div { padding: 0 26px; border-left: 1px solid var(--line); }
  .hero__facts > div:first-child { padding-left: 0; border-left: 0; }
}
.hero__facts b { display: block; font-size: 17px; font-weight: 600; margin-bottom: 4px; }
.hero__facts span { font-size: 14px; color: var(--ink-2); }

/* ---------- 区块 ---------- */
.blk { padding: 72px 0; }
.blk--soft { background: var(--bg-soft); }
.blk--dark { background: #000; color: var(--bg-soft); }
.blk--tc { text-align: center; }
@media (min-width: 834px) { .blk { padding: 88px 0; } }
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 22px; }
.wrap--wide { max-width: var(--maxw-wide); }
.blk__head { max-width: 760px; margin-bottom: 36px; }
.blk--tc .blk__head { margin-left: auto; margin-right: auto; }
.blk__eyebrow { margin: 0 0 10px; font-size: 17px; font-weight: 600; color: var(--ink-2); }
.blk--dark .blk__eyebrow { color: var(--ink-3); }
.blk__title { margin: 0 0 14px; font-size: clamp(30px, 4.6vw, 56px); line-height: 1.07; font-weight: 600; letter-spacing: -.01em; text-wrap: balance; }
.blk__lead { margin: 0; font-size: clamp(17px, 2vw, 21px); line-height: 1.5; color: var(--ink-2); }
.blk--dark .blk__lead { color: var(--ink-3); }

/* ---------- 平铺卡片（bento 风）----------
   底线规则：卡片底色必须与所在区块**不同色**。
   浅灰区块(#f5f5f7)里再放 #f5f5f7 的卡片 = 卡片隐身，整页读成一大片灰。
   沿用 Apple 的做法：灰底上放白卡、白底上放灰卡。 */
.tiles { display: grid; gap: 14px; }
@media (min-width: 834px) { .tiles { grid-template-columns: 1fr 1fr; gap: 20px; } }
.tile {
  background: var(--bg-soft); border-radius: var(--radius-lg); padding: 34px 32px;
  display: flex; flex-direction: column; gap: 10px;
}
/* 灰底区块里的卡片改成白底（--plain/--dark 除外，它们本就无底/深色底） */
.blk--soft .tile:not(.tile--plain):not(.tile--dark) { background: #fff; }

/* bento 节奏：首尾卡片横跨两列（手机单列时自动失效），让六宫格不读成一张长清单 */
@media (min-width: 834px) {
  .tiles--feature > .tile:first-child,
  .tiles--feature > .tile:last-child { grid-column: span 2; padding: 38px 40px; }
  .tiles--feature > .tile:first-child .tile__text,
  .tiles--feature > .tile:last-child .tile__text { max-width: 66ch; }
}
.tile--plain { background: none; padding: 0; }
.tile--dark { background: #1d1d1f; color: var(--bg-soft); padding: 40px 38px; }
.tile--dark .tile__title { font-size: clamp(22px, 2.6vw, 30px); }
.tile--dark .tile__text { color: #a1a1a6; font-size: 16px; }
.tile__label { margin: 0; font-size: 12px; font-weight: 600; letter-spacing: .04em; text-transform: uppercase; color: var(--ink-2); }
.tile__title { margin: 0; font-size: clamp(21px, 2.6vw, 27px); line-height: 1.2; font-weight: 600; letter-spacing: -.008em; text-wrap: balance; }
.tile__text { margin: 0; font-size: 15px; line-height: 1.6; color: var(--ink-2); }
.tile__media { margin-top: auto; padding-top: 18px; }
.tile__media img { width: 100%; height: auto; border-radius: var(--radius); }

/* ---------- 文字链接（Apple 的「了解更多 ›」）---------- */
.more { display: inline-flex; align-items: center; gap: 6px; font-size: 17px; color: var(--link); }
.more::after { content: "›"; font-size: 19px; line-height: 1; transform: translateY(-1px); transition: transform .18s cubic-bezier(.3,.7,.4,1); }
.more:hover::after { transform: translate(2px, -1px); }
.more:hover { text-decoration: underline; }
.blk--dark .more { color: var(--link-dark); }
.links { margin: 0; padding: 0; list-style: none; display: grid; gap: 10px; }
.links li { font-size: 15px; line-height: 1.6; color: var(--ink-2); }
.links li b { color: var(--ink); font-weight: 600; }
.blk--dark .links li { color: var(--ink-3); }
.blk--dark .links li b { color: var(--bg-soft); }

/* ---------- 截图位（含「预留」占位）---------- */
.shots { display: grid; gap: 18px; grid-template-columns: repeat(auto-fit, minmax(168px, 1fr)); max-width: 920px; margin: 0 auto; }
.shots--wide { grid-template-columns: 1fr; max-width: 1040px; }
@media (min-width: 834px) { .shots--wide { grid-template-columns: 1fr 1fr; } }
.shots--three { grid-template-columns: 1fr; max-width: 1040px; }
@media (min-width: 700px) { .shots--three { grid-template-columns: repeat(3, 1fr); } }
.shots__label { margin: 44px 0 20px; font-size: 15px; font-weight: 600; color: var(--ink-2); text-align: center; }
.shots__label:first-of-type { margin-top: 0; }
.shot { margin: 0; }
/* 手机：截图行改成横向吸附滑动（Apple 的手势习惯），省掉一屏屏的空占位 */
@media (max-width: 699px) {
  .shots, .shots--three {
    grid-template-columns: none;
    grid-auto-flow: column;
    grid-auto-columns: 64%;
    overflow-x: auto;
    overscroll-behavior-x: contain;
    -webkit-overflow-scrolling: touch;
    scroll-snap-type: x proximity;
    scrollbar-width: none;
    margin: 0 -22px;
    padding: 2px 22px 12px;
  }
  .shots::-webkit-scrollbar, .shots--three::-webkit-scrollbar { display: none; }
  .shot { scroll-snap-align: start; }
  .shots--wide { grid-template-columns: 1fr; grid-auto-flow: row; overflow: visible; margin: 0; padding: 2px 0 0; }
}
.shot__frame {
  position: relative; overflow: hidden; border-radius: 26px; background: var(--bg-soft);
  aspect-ratio: 1320 / 2868;
  box-shadow: 0 16px 34px rgba(16, 34, 56, .10);
  display: flex; align-items: center; justify-content: center;
}
.blk--soft .shot__frame { background: #fff; }
.shots--wide .shot__frame { aspect-ratio: 16 / 10; border-radius: 20px; }
.shot__frame img { width: 100%; height: 100%; object-fit: cover; }
.shot figcaption { margin-top: 12px; font-size: 14px; color: var(--ink-2); text-align: center; }
.blk--dark .shot__frame { background: #1d1d1f; }
.blk--dark .shot figcaption { color: var(--ink-3); }

/* 占位态：柔和灰底 + 细小图标，不用虚线框（虚线在整页里太吵）；
   把图放进对应路径后自动换成图片（见 www.js 的 initShots）。 */
.shot__frame--todo { background: linear-gradient(180deg, #f7f8fa 0%, #eef1f6 100%); box-shadow: none; }
.blk--soft .shot__frame--todo { background: linear-gradient(180deg, #ffffff 0%, #f1f2f6 100%); }
.shot__ph { text-align: center; padding: 18px; color: var(--ink-3); }
.shot__ph svg { width: 24px; height: 24px; margin-bottom: 10px; opacity: .45; }
.shot__ph b { display: block; font-size: 13px; font-weight: 500; color: var(--ink-2); margin-bottom: 6px; }
.shot__ph code { font-size: 11px; background: rgba(0, 0, 0, .05); padding: 2px 7px; }
.blk--dark .shot__ph b { color: var(--bg-soft); }

/* ---------- 流程（横向 5 步）---------- */
.flow { display: grid; gap: 26px; counter-reset: st; }
@media (min-width: 700px) { .flow { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 1024px) {
  .flow { grid-template-columns: repeat(5, 1fr); gap: 32px; }
  .step::after {
    content: ""; position: absolute; left: 34px; right: -26px; top: 12px; height: 1px;
    background: var(--line);
  }
  .step:last-child::after { display: none; }
}
.step { position: relative; padding-top: 34px; }
.step::before {
  counter-increment: st; content: counter(st);
  position: absolute; left: 0; top: 0; width: 24px; height: 24px; border-radius: 50%;
  background: var(--ink); color: #fff; font-size: 12px; font-weight: 600;
  display: flex; align-items: center; justify-content: center;
}
.blk--dark .step::before { background: var(--bg-soft); color: #000; }
.step__t { margin: 0 0 6px; font-size: 17px; font-weight: 600; }
.step__d { margin: 0; font-size: 15px; line-height: 1.55; color: var(--ink-2); }
.blk--dark .step__d { color: var(--ink-3); }

/* ---------- 场景（左右分栏）---------- */
.scene { display: grid; gap: 20px; padding: 40px 0; border-top: 1px solid var(--line); }
.scene:first-of-type { border-top: 0; padding-top: 0; }
@media (min-width: 900px) { .scene { grid-template-columns: 1fr 1fr; gap: 60px; align-items: start; } }
.scene__t { margin: 0 0 12px; font-size: clamp(24px, 3vw, 32px); line-height: 1.15; font-weight: 600; letter-spacing: -.008em; }
.scene__d { margin: 0; font-size: 15px; line-height: 1.6; color: var(--ink-2); }
.scene__pain { margin: 16px 0 0; font-size: 14px; line-height: 1.6; color: var(--ink-2); }
.scene__pain b { color: var(--ink); font-weight: 600; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 44px; padding: 11px 21px; border: 0; border-radius: 980px;
  font: 400 17px/1 var(--font); cursor: pointer;
  transition: background .2s, opacity .2s, transform .12s cubic-bezier(.3,.7,.4,1);
  white-space: nowrap;
}
.btn:active { transform: scale(.97); }
.btn--primary { background: var(--blue); color: #fff; }
.btn--primary:hover { background: var(--blue-hover); text-decoration: none; }
.btn--gray { background: var(--bg-soft); color: var(--ink); }
.btn--gray:hover { background: #e8e8ed; text-decoration: none; }
.btn--ghost { background: transparent; color: var(--blue); border: 1px solid var(--blue); }
.btn--ghost:hover { background: rgba(0, 113, 227, .06); text-decoration: none; }
.btn--on-dark { background: var(--bg-soft); color: #000; }
.btn--on-dark:hover { background: #fff; text-decoration: none; }
.btn--sm { min-height: 30px; padding: 6px 14px; font-size: 13px; }
.btn--block { width: 100%; }

/* ---------- 联系 / 信息表 ---------- */
.contact { background: var(--bg-soft); border-radius: var(--radius-lg); padding: 36px 38px; }
.blk--soft .contact { background: #fff; }
.contact__label { margin: 0 0 4px; font-size: 14px; color: var(--ink-2); }
.contact__phone { margin: 0 0 10px; font-size: clamp(26px, 4vw, 34px); font-weight: 600; letter-spacing: -.01em; }
.contact__meta { margin: 0 0 20px; font-size: 15px; line-height: 1.6; color: var(--ink-2); }
.contact__actions { display: flex; flex-wrap: wrap; gap: 12px; }
.info { margin: 0; padding: 0; list-style: none; font-size: 15px; }
.info li { display: flex; gap: 14px; padding: 14px 0; border-bottom: 1px solid var(--line); }
.info li:last-child { border-bottom: 0; }
.info b { flex: none; width: 96px; font-weight: 500; color: var(--ink-2); font-size: 14px; }
.todo-mark { color: #bf4800; }

/* ---------- 页脚 ---------- */
.foot { background: var(--bg-soft); padding: 40px 0 26px; font-size: 12px; color: var(--ink-2); }
.foot a { color: var(--ink-2); }
.foot a:hover { color: var(--ink); }
.foot__grid { display: grid; gap: 32px; }
@media (min-width: 700px) { .foot__grid { grid-template-columns: 1.5fr 1fr 1fr 1.3fr; } }
.foot__t { margin: 0 0 10px; font-size: 12px; font-weight: 600; color: var(--ink); }
.foot__l { margin: 0; padding: 0; list-style: none; }
.foot__l li { margin-bottom: 8px; }
.foot__about { margin: 8px 0 0; line-height: 1.6; }
.foot__brand { display: flex; align-items: center; gap: 8px; color: var(--ink); font-weight: 600; font-size: 13px; }
.foot__brand img { width: 20px; height: 20px; border-radius: 5px; }
.foot__legal {
  margin-top: 28px; padding-top: 15px; border-top: 1px solid var(--line);
  display: flex; flex-wrap: wrap; gap: 6px 20px; justify-content: space-between; line-height: 1.7;
}
[data-site-hide-if-empty][data-empty="1"] { display: none; }

/* ---------- 面包屑 / 内容页头 ---------- */
.page-hd { padding: calc(var(--nav-h) + 48px) 0 8px; text-align: center; }
.crumb { margin: 0 0 14px; font-size: 12px; color: var(--ink-2); }
.crumb a { color: var(--ink-2); }
.crumb a:hover { color: var(--ink); }

/* ---------- 入场动画（渐进增强：无 JS 也能看到全部内容）----------
   HTML 里只写 data-reveal；由 www.js 加上 .reveal 才进入"待揭示"状态，
   并在 1.5s 后强制点亮作为兜底 —— 观察器不触发时页面绝不会空白。 */
[data-reveal] { opacity: 1; }
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .7s cubic-bezier(.28,.6,.2,1), transform .7s cubic-bezier(.28,.6,.2,1); }
.reveal.is-in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ---------- 零碎 ---------- */
code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: .88em;
  background: rgba(0, 0, 0, .05); padding: 2px 6px; border-radius: 6px; color: var(--ink);
}
.blk--dark code { background: rgba(255, 255, 255, .12); color: var(--bg-soft); }
@media (max-width: 600px) { .hide-sm { display: none; } }