/* ==========================================================================
   Zeus Insights · 主站 v3 · mobile.css
   手机版（m/ 下的页面）的版面：按 390×844 设计，320 至 767 宽成立。不引入 desktop.css。
   变量、排版、按钮、入场次序在 base.css；这里先改手机上的尺寸变量，再写页眉、整屏菜单、页脚、收尾、问答，
   以及首页各区块。二级页的版面在 mpages.css。
   设计语言与桌面版相同：暖纸、白、暖黑三种底；两段式细体标题；等宽小标签带红点；发丝线；整圆标记。
   触控目标不小于 44 像素；任何文字不小于 13 像素。
   ========================================================================== */

:root {
  --gutter: 1rem;
  --hdr-h: 3.5rem;
  --t-display: clamp(2.25rem, 10.2vw, 2.875rem);
  --t-h2: clamp(1.875rem, 8.2vw, 2.25rem);
  --t-h3: 1.25rem;
  --t-lead: 1.125rem;
  --t-body: 1rem;
}
html { font-size: 100%; scroll-padding-top: var(--hdr-h); }
body { -webkit-tap-highlight-color: transparent; }
.sec { padding-block: 4.5rem; }
.sec[data-rhythm="tight"] { padding-block: 3rem; }
.sec[data-rhythm="flush"] { padding-block: 0; }
.wrap { padding-inline: var(--gutter); }
.h-2 { line-height: 1.12; }
.eyebrow { font-size: .875rem; }
.btn { --btn-h: 3rem; padding: 0 1.25rem; }
.btn--primary { padding-left: 1rem; }
main > section:focus, main > section:focus-visible { outline: none; }

/* ---------- 页眉：字标、Contact、菜单按钮 ---------- */
.hdr__in { gap: .5rem; }
.hdr__logo img { height: 1.625rem; width: auto; }
.hdr__end { margin-left: auto; display: flex; align-items: center; gap: .5rem; }
.hdr__cta { --btn-h: 2.75rem; padding: 0 1rem 0 .875rem; font-size: .9375rem; }
.hdr__menu { position: relative; width: 2.75rem; height: 2.75rem; border-radius: 50%; border: 1px solid var(--line-strong); display: grid; place-items: center; }
.hdr__menu i { position: absolute; left: 50%; top: 50%; width: 1.125rem; height: 1.5px; margin-left: -.5625rem; background: var(--ink); border-radius: 1px; transition: transform var(--d-3) var(--e-out); }
.hdr__menu i:nth-of-type(1) { transform: translateY(-.25rem); }
.hdr__menu i:nth-of-type(2) { transform: translateY(.25rem); }
.hdr__menu[aria-expanded="true"] i:nth-of-type(1) { transform: rotate(45deg); }
.hdr__menu[aria-expanded="true"] i:nth-of-type(2) { transform: rotate(-45deg); }
html.menu-open .hdr { background: var(--c-ink); color: #F4F2EE; border-color: rgba(255, 255, 255, .13); }
html.menu-open .hdr .hdr__logo .on-light { display: none; }
html.menu-open .hdr .hdr__logo .on-dark { display: block; }
html.menu-open .hdr .hdr__menu { border-color: rgba(255, 255, 255, .28); }
html.menu-open .hdr .hdr__menu i { background: #F4F2EE; }
html.menu-open .hdr .hdr__cta { background: #F4F2EE; color: var(--c-ink); }
html.menu-open, html.menu-open body { overflow: hidden; }

/* ---------- 整屏菜单（深色）：由菜单按钮处张开一轮圆 ---------- */
.menu { position: fixed; inset: var(--hdr-h) 0 0; z-index: 55; display: flex; flex-direction: column; justify-content: space-between; padding: 2rem var(--gutter) calc(1.5rem + env(safe-area-inset-bottom)); overflow-y: auto;
  clip-path: circle(0 at calc(100% - 2.4rem) -1.75rem); transition: clip-path 560ms var(--e-inout); }
.menu[hidden] { display: none; }
.menu.is-open { clip-path: circle(150% at calc(100% - 2.4rem) -1.75rem); }
.menu__bg { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; }
.menu__nav { position: relative; display: grid; }
.menu__nav a { display: flex; align-items: baseline; gap: .875rem; min-height: 4.5rem; padding: .75rem 0; border-bottom: 1px solid var(--line); font-size: 2.5rem; line-height: 1.1; font-weight: 300; letter-spacing: -0.03em; text-decoration: none; color: var(--ink);
  opacity: 0; transform: translateY(1rem); transition: opacity var(--d-3) var(--e-out), transform var(--d-4) var(--e-out); }
.menu__nav a .mono { font-size: .875rem; letter-spacing: 0; color: var(--ink-subtle); }
.menu__nav a[aria-current="page"] .mono { color: var(--accent-text); }
.menu.is-open .menu__nav a { opacity: 1; transform: none; }
.menu.is-open .menu__nav a:nth-child(2) { transition-delay: 50ms; }
.menu.is-open .menu__nav a:nth-child(3) { transition-delay: 100ms; }
.menu.is-open .menu__nav a:nth-child(4) { transition-delay: 150ms; }
.menu.is-open .menu__nav a:nth-child(5) { transition-delay: 200ms; }
.menu__foot { position: relative; display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1rem; margin-top: 2.5rem; padding-top: 1.25rem; border-top: 1px solid var(--line-strong); }
.menu__foot a { display: inline-flex; align-items: center; min-height: 2.75rem; font-size: 1rem; color: var(--ink); text-decoration: none; }
.menu__lang:lang(zh-Hans), .menu__lang:lang(zh) { font-family: "PingFang SC", "Microsoft YaHei", var(--f-sans); }
html:not(.js) .menu[hidden] { display: flex; position: static; clip-path: none; }
html:not(.js) .menu__nav a { opacity: 1; transform: none; }
html:not(.js) .hdr__menu { display: none; }

/* ---------- 首屏 ---------- */
.sec.hero { overflow: clip; padding-block: 2rem 3.5rem; }
.hero__bg { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; }
.hero__copy { position: relative; }
.hero__h { line-height: 1.08; text-wrap: balance; }
.hero__h .ln { white-space: normal; padding-bottom: .16em; margin-bottom: -.16em; }
.hero__cta { display: flex; flex-wrap: wrap; gap: .625rem; margin-top: 1.5rem; }
.stage { position: relative; margin: 2rem var(--gutter) 0; }
.stage__win noscript p { padding: 1.25rem; border: 1px solid var(--line); border-radius: .75rem; background: var(--c-white); }

/* 示意窗口在手机上：上下排的紧凑窗口（同一个 demo.js；容器查询的容器是 .stage__win） */
@container win (max-width: 34rem) {
  .fd { min-width: 0; height: auto; grid-template-rows: auto auto; border-radius: .875rem; }
  .fd-bar { grid-template-columns: minmax(0, 1fr) auto; grid-template-rows: auto auto; row-gap: .5rem; padding: .625rem .625rem .625rem .75rem; }
  .fd-bar__ws { display: none; }
  .fd-tag { grid-column: 2; grid-row: 1; }
  .fd-modes { grid-column: 1 / -1; grid-row: 2; display: grid; grid-template-columns: 1fr 1fr; gap: 3px; border-radius: .75rem; }
  .fd-mode { justify-content: center; height: 2.75rem; padding: 0 .5rem; border-radius: .5625rem; font-size: .9375rem; }
  .fd .fd-mode:focus-visible { border-radius: .5625rem; }
  .fd-body { grid-template-columns: minmax(0, 1fr); grid-template-rows: auto 21rem auto; }
  .fd-nav { flex-direction: row; justify-content: space-between; padding: .25rem .375rem; border-right: 0; border-bottom: 1px solid var(--fd-line); }
  .fd-nav__item { width: 2.75rem; height: 2.75rem; padding: 0; justify-content: center; flex: none; }
  .fd-nav__item > span { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
  .fd-nav__item .fd-ic { width: 1.125rem; height: 1.125rem; }
  .fd-count { position: absolute; top: 2px; right: 2px; margin: 0; min-width: 1.125rem; line-height: 1.125rem; background: var(--fd-bg3); }
  .fd-user { display: none; }
  .fd-work { flex-direction: column; }
  .fd-panes { display: flex; }
  .fd-panes button { height: 2.75rem; }
  .fd-work[data-pane="rec"] .fd-src, .fd-work[data-pane="src"] .fd-rec { display: none; }
  .fd-work .fd-col { flex: 1 1 0; border-right: 0; }
  .fd-work .fd-col > .fd-vh h3 { display: none; }
  .fd-work .fd-col > .fd-vh { height: 2.5rem; border-bottom: 0; }
  .fd-row--log { grid-template-columns: 6.5rem minmax(0, 1fr); }
  .fd-side { border-left: 0; border-top: 1px solid var(--fd-line); }
  .fd-side > .fd-vh { height: 3rem; }
  .fd-feed { min-height: 6rem; max-height: 26rem; }
  .fd-compose { margin: .75rem; }
  .fd-send { width: 2.875rem; height: 2.875rem; }
  .fd-pick label > span { padding: .5rem .625rem; }
  .fd-btn { height: 3rem; }
  .fd-viewer__x { width: 2.75rem; height: 2.75rem; }
}

/* ---------- 客户标志：一行缓慢走动（脚本复制出第二份接在后面）；减少动态效果下改为两列格子 ---------- */
.clients .wrap + .clients__logos, .clients__logos { margin-top: 1.5rem; }
.clients__t { font-size: 1rem; line-height: 1.5; color: var(--ink-muted); }
.clients__logos { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); margin-inline: var(--gutter); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.clients__logos li { display: grid; place-items: center; height: 5rem; padding: 0 .75rem; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.clients__logos img { width: auto; max-width: 100%; }
.clients__logos .inv img { filter: brightness(0); }
.clients__logos.is-marquee { display: flex; width: max-content; margin-inline: 0; border: 0; gap: 0; animation: mq-clients 46s linear infinite; }
.clients__logos.is-marquee li { border: 0; width: 8.5rem; height: 4.5rem; flex: none; }
.clients__mq { overflow: hidden; margin-top: 1.5rem; border-block: 1px solid var(--line); -webkit-mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent); mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent); }
.clients__mq.is-paused .clients__logos { animation-play-state: paused; }
@keyframes mq-clients { to { transform: translateX(-50%); } }
.clients__more { margin-top: 1.25rem; font-size: 1rem; min-height: 2.75rem; }
html.rm .clients__logos.is-marquee { animation: none; }

/* ---------- 买家的两难 ---------- */
.choice .h-2 { margin-top: 1rem; }
.choice .h-2 span { display: block; }
.choice__fig { position: relative; margin-top: 2rem; aspect-ratio: 1 / .78; border-radius: var(--r-3); overflow: hidden; --dot-ink: #EFEBE2; }
.choice__fig canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.choice__list { margin-top: 1.5rem; }
.choice__list li { position: relative; display: grid; grid-template-columns: 1.125rem minmax(0, 1fr); column-gap: .75rem; padding: 1.125rem 0 1.25rem; }
.choice__list li:last-child { border-bottom: 1px solid var(--line-strong); }
.choice__bar { position: absolute; left: 0; right: 0; top: 0; height: 1px; background: var(--line-strong); }
.choice__bar i { display: block; height: 2px; margin-top: -.5px; background: var(--ink); transform: scaleX(0); transform-origin: 0 50%; }
.choice__list li.is-on .choice__bar i { animation: choice-fill var(--choice-ms, 5600ms) linear forwards; }
@keyframes choice-fill { to { transform: scaleX(1); } }
.choice__list li::before { content: ""; width: 1.125rem; height: 1.125rem; margin-top: .25rem; border-radius: 50%; border: 1px solid var(--line-strong); background: radial-gradient(circle, var(--c-red) 0 .21875rem, transparent .25rem) no-repeat center / 0 0; transition: background-size var(--d-3) var(--e-spring); }
.choice__list li.is-on::before { border: 2px solid var(--ink); background-size: 100% 100%; }
.choice__list p { font-size: 1.0625rem; line-height: 1.55; color: var(--ink-muted); }
.choice__list strong { font-weight: 500; color: var(--ink); }
:is(html.rm, html:not(.js)) .choice__bar i { display: none; }

/* ---------- 第三条路与三个支柱 ---------- */
.third .h-2 { margin-top: 1rem; }
.pillars { display: grid; row-gap: 1rem; margin-top: 2rem; }
.pillar { border: 1px solid var(--line); border-radius: var(--r-3); overflow: hidden; }
.pillar__fig { height: 15rem; border-bottom: 1px solid var(--line); }
.pillar__fig canvas { width: 100%; height: 100%; }
.pillar__txt { padding: 1.25rem 1.25rem 1.5rem; }
.pillar__n { font-size: .8125rem; color: var(--ink-subtle); }
.pillar .h-3 { margin-top: .375rem; }
.pillar .body { margin-top: .625rem; color: var(--ink); }

/* ---------- 一个项目怎样进行：四步纵排，左边一条线随滚动走完 ---------- */
.how { border-top: 1px solid var(--line); }
.msteps { position: relative; margin-top: 1.75rem; padding-left: 2rem; }
.msteps::before, .msteps::after { content: ""; position: absolute; left: .5625rem; top: .5rem; bottom: 1rem; width: 1px; background: var(--line-strong); }
.msteps::after { background: var(--ink); transform-origin: 50% 0; transform: scaleY(var(--p, 0)); }
.mstep { position: relative; padding-bottom: 3rem; }
.mstep__ring { position: absolute; left: -2rem; top: .125rem; z-index: 1; width: 1.1875rem; height: 1.1875rem; border-radius: 50%; border: 1px solid var(--line-strong); background: var(--surface); transition: border-color var(--d-2) var(--e-out), background var(--d-2) var(--e-out); }
.mstep__ring::after { content: ""; position: absolute; inset: 0; margin: auto; width: .4375rem; height: .4375rem; border-radius: 50%; background: var(--c-red); transform: scale(0); transition: transform var(--d-3) var(--e-spring); }
.mstep.is-done .mstep__ring { background: var(--ink); border-color: var(--ink); }
.mstep.is-on .mstep__ring { border: 2px solid var(--ink); background: var(--surface); }
.mstep.is-on .mstep__ring::after { transform: scale(1); }
.mstep__n { font-size: .8125rem; color: var(--ink-subtle); }
.mstep .h-2 { margin-top: .5rem; font-size: clamp(1.75rem, 7.6vw, 2rem); }
.mstep .lead { margin-top: .875rem; font-size: 1.0625rem; }
.mstep__fig { position: relative; margin-top: 1.25rem; height: 17rem; border-radius: var(--r-3); overflow: hidden; display: grid; place-items: center; padding: 1rem; background-image: radial-gradient(circle at 70% 30%, rgba(255, 255, 255, .06), transparent 60%); }
.how__fine { display: grid; grid-template-columns: .875rem minmax(0, 1fr); column-gap: .625rem; color: var(--ink-muted); }
.how__fine::before { content: ""; width: .4375rem; height: .4375rem; margin-top: .4375rem; border-radius: 50%; border: 1px solid var(--ink-subtle); }

/* 四块小界面：白色卡片压在深色面板上，字不小于 13 像素 */
.mm { width: 100%; max-width: 20rem; background: #fff; color: #1E1D1B; border-radius: .75rem; box-shadow: 0 1.5rem 3rem -1.75rem rgba(0, 0, 0, .8); font-size: .8125rem; line-height: 1.35; overflow: hidden; }
.mm code, .mm .mono { font-family: var(--f-mono); font-size: .8125rem; color: #66635E; }
.mm__bar { display: flex; align-items: center; gap: .5rem; height: 2.5rem; padding: 0 .875rem; background: #FAF8F5; border-bottom: 1px solid #E9E5DE; }
.mm__bar b { font-size: .875rem; font-weight: 600; }
.mm__bar span { color: #66635E; }
.mm__bar > i.mono { margin-left: auto; font-style: normal; }
.mm--req ol { padding: .375rem .875rem; }
.mm--req li { display: grid; grid-template-columns: 1.25rem auto minmax(0, 1fr); column-gap: .5rem; align-items: start; padding: .5rem 0; border-bottom: 1px solid #F0EDE7; }
.mm--req li:last-child { border-bottom: 0; }
.mm__check { display: grid; place-items: center; width: 1.125rem; height: 1.125rem; margin-top: .0625rem; border-radius: .25rem; border: 1.5px solid #D8D3CA; color: #fff; transition: background var(--d-2) var(--e-out), border-color var(--d-2) var(--e-out); }
.mm__check svg path { stroke-dasharray: 1; stroke-dashoffset: 1; transition: stroke-dashoffset 420ms var(--e-out); }
.mstep.is-in .mm--req li .mm__check { background: #1E1D1B; border-color: #1E1D1B; transition-delay: calc(400ms + var(--n, 0) * 380ms); }
.mstep.is-in .mm--req li .mm__check svg path { stroke-dashoffset: 0; transition-delay: calc(480ms + var(--n, 0) * 380ms); }
.mm--req li:nth-child(2) { --n: 1; } .mm--req li:nth-child(3) { --n: 2; }
.mm__foot { padding: .5rem .875rem; border-top: 1px solid #E9E5DE; background: #FAF8F5; }
.mm--proto .mm__bar i { width: .5rem; height: .5rem; border-radius: 50%; border: 1px solid #BDB7AC; }
.mm__tag { margin-left: auto; padding: 0 .5rem; line-height: 1.375rem; border-radius: 99rem; border: 1px dashed #D8D3CA; color: #66635E; font-size: .8125rem; }
.mm__scr { position: relative; height: 12rem; }
.mm__wire { position: absolute; inset: 0; padding: .875rem; display: grid; align-content: start; row-gap: .75rem; }
.mm__wire i { height: 1.875rem; border-radius: .375rem; background: #EFECE6; }
.mm__wire i:first-child { width: 40%; height: 1rem; }
.mm__real { position: absolute; inset: 0; padding: .625rem .875rem; background: #fff; clip-path: circle(0 at 50% 45%); transition: clip-path 1.1s var(--e-inout) .35s; }
.mstep.is-in .mm__real { clip-path: circle(150% at 50% 45%); }
.mm__h { padding: .25rem 0 .375rem; font-size: .9375rem; }
.mm__row { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; align-items: center; column-gap: .5rem; padding: .5rem 0; border-top: 1px solid #F0EDE7; }
.mm__row b { font-weight: 500; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.mm__chip { padding: 0 .4375rem; line-height: 1.375rem; border-radius: .375rem; font-weight: 600; white-space: nowrap; }
.mm__chip--new { background: #DDE6F3; color: #24406F; }
.mm__chip--rev { background: #FAEFD6; color: #7A4E00; }
.mm__chip--ok { background: #E1F2E6; color: #1B6336; }
.mm__tap { position: absolute; left: 62%; top: 52%; width: 2.25rem; height: 2.25rem; margin: -1.125rem; border-radius: 50%; border: 2px solid var(--c-red); background: rgba(230, 0, 0, .1); opacity: 0; }
.mstep.is-in .mm__tap { animation: mm-tap 3.2s var(--e-out) 1.6s infinite; }
@keyframes mm-tap { 0% { opacity: 0; transform: scale(.4); } 12% { opacity: 1; transform: scale(1); } 30%, 100% { opacity: 0; transform: scale(1.8); } }
.mm--build { background: transparent; box-shadow: none; overflow: visible; color: #F4F2EE; }
.mm__flow { position: relative; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); }
.mm__flow::before { content: ""; position: absolute; left: 12.5%; right: 12.5%; top: .75rem; height: 1px; background: rgba(255, 255, 255, .34); }
.mm__flow li { position: relative; display: grid; justify-items: center; row-gap: .5rem; text-align: center; font-size: .8125rem; color: rgba(255, 255, 255, .8); }
.mm__flow li i { width: 1.5rem; height: 1.5rem; border-radius: 50%; border: 1.5px solid rgba(255, 255, 255, .6); background: var(--c-ink); }
.mm__flow li.is-slot i { width: 3rem; height: 3rem; margin-top: -.75rem; border: 2px dashed #FF5640; }
.mm__flow li.is-slot { color: #fff; font-weight: 500; }
.mm__ways { display: grid; grid-template-columns: 1fr 1fr; gap: .375rem; margin-top: 1.5rem; }
.mm__ways li { display: flex; align-items: center; gap: .5rem; height: 2.5rem; padding: 0 .75rem; border-radius: .5rem; border: 1px solid rgba(255, 255, 255, .2); font-family: var(--f-mono); font-size: .8125rem; color: rgba(255, 255, 255, .78); }
.mm__ways li i { width: .5rem; height: .5rem; border-radius: 50%; border: 1px solid rgba(255, 255, 255, .5); flex: none; }
.mstep.is-in .mm__ways li { animation: mm-way 8s steps(1) infinite; animation-delay: calc(var(--i) * 2s - 8s); }
@keyframes mm-way { 0%, 24.9% { background: #fff; color: #1E1D1B; border-color: #fff; } 25%, 100% { background: transparent; color: rgba(255, 255, 255, .78); border-color: rgba(255, 255, 255, .2); } }
.mm--live .mm__bar { justify-content: space-between; }
.mm__live { display: inline-flex; align-items: center; gap: .375rem; padding: 0 .5rem; line-height: 1.375rem; border-radius: 99rem; background: #E1F2E6; color: #1B6336 !important; font-weight: 600; opacity: .3; transition: opacity var(--d-3) var(--e-out) 1.9s; }
.mm__live i { width: .4375rem; height: .4375rem; border-radius: 50%; background: #1E9A50; }
.mstep.is-in .mm__live { opacity: 1; }
.mm__svc { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: #F0EDE7; border-bottom: 1px solid #E9E5DE; }
.mm__svc li { display: grid; grid-template-columns: auto minmax(0, 1fr); column-gap: .5rem; align-items: center; padding: .625rem .875rem; background: #fff; }
.mm__svc li i { grid-row: span 2; width: .625rem; height: .625rem; border-radius: 50%; background: #D8D3CA; transition: background var(--d-3) var(--e-out); }
.mm__svc li span { color: #66635E; }
.mstep.is-in .mm__svc li i { background: #1E9A50; transition-delay: calc(500ms + var(--i) * 300ms); }
.mm__log { padding: .375rem .875rem .5rem; }
.mm__log li { display: grid; grid-template-columns: 3rem minmax(0, 1fr); padding: .3125rem 0; opacity: 0; transform: translateY(.375rem); transition: opacity var(--d-3) var(--e-out), transform var(--d-3) var(--e-out); }
.mstep.is-in .mm__log li { opacity: 1; transform: none; transition-delay: calc(1.9s + var(--i) * 450ms); }
:is(html.rm, html:not(.js)) .mm__real { clip-path: none; }
:is(html.rm, html:not(.js)) .mm__check { background: #1E1D1B; border-color: #1E1D1B; }
:is(html.rm, html:not(.js)) .mm__check svg path { stroke-dashoffset: 0; }
:is(html.rm, html:not(.js)) .mm__svc li i { background: #1E9A50; }
:is(html.rm, html:not(.js)) .mm__log li, :is(html.rm, html:not(.js)) .mm__live { opacity: 1; transform: none; }
html.rm .mm__ways li:first-child { background: #fff; color: #1E1D1B; }

/* ---------- 使用它的人：三件设备上下排 ---------- */
.people .h-2 { margin-top: 1rem; }
.mpeople { position: relative; margin-top: 2rem; padding: 2rem var(--gutter) .5rem; background: var(--c-paper); overflow: hidden; isolation: isolate; display: grid; row-gap: 3rem; }
.mpeople__bg { position: absolute; inset: 0; width: 100%; height: 100%; z-index: -1; }
.mdev { margin: 0; display: grid; justify-items: center; row-gap: 1rem; }
.mdev--phone .mdev__screen { position: relative; width: min(62%, 15rem); aspect-ratio: 780 / 1688; padding: .375rem; border-radius: 1.75rem; background: var(--c-ink); box-shadow: 0 1.875rem 3rem -1.75rem rgba(25, 24, 23, .55); }
.mdev--phone .mdev__screen img { width: 100%; height: 100%; object-fit: cover; border-radius: 1.375rem; }
.mdev__sheet { position: absolute; inset: .375rem; width: calc(100% - .75rem) !important; height: calc(100% - .75rem) !important; transform: translateY(101%); }
.mdev--tap .mdev__screen { overflow: hidden; }
.mdev--tap.is-live .mdev__sheet { animation: dev-sheet 5.6s var(--e-out) infinite; }
.mdev--tap .dev__tap { position: absolute; width: 2.125rem; height: 2.125rem; margin: -1.0625rem 0 0 -1.0625rem; border-radius: 50%; border: 2px solid var(--c-red); background: rgba(230, 0, 0, .1); opacity: 0; }
.mdev--tap .dev__tap--a { left: 50%; top: 95%; }
.mdev--tap .dev__tap--b { left: 12%; top: 5%; }
.mdev--tap.is-live .dev__tap--a { animation: dev-tap-a 5.6s var(--e-out) infinite; }
.mdev--tap.is-live .dev__tap--b { animation: dev-tap-b 5.6s var(--e-out) infinite; }
@keyframes dev-sheet { 0%, 22% { transform: translateY(101%); } 25.5%, 68% { transform: translateY(0); } 71.5%, 100% { transform: translateY(101%); } }
@keyframes dev-tap-a { 0%, 15% { opacity: 0; transform: scale(.4); } 19% { opacity: 1; transform: scale(1); } 27% { opacity: 0; transform: scale(1.7); } 100% { opacity: 0; transform: scale(1.7); } }
@keyframes dev-tap-b { 0%, 61% { opacity: 0; transform: scale(.4); } 65% { opacity: 1; transform: scale(1); } 73% { opacity: 0; transform: scale(1.7); } 100% { opacity: 0; transform: scale(1.7); } }
.mdev figcaption { justify-self: stretch; display: grid; row-gap: .5rem; }
.mdev figcaption.h-3, .mdev figcaption > .h-3 { display: flex; align-items: center; gap: .625rem; }
.mdev__dot { width: .5rem; height: .5rem; border-radius: 50%; border: 1px solid var(--ink-subtle); flex: none; transition: background var(--d-2) var(--e-out), border-color var(--d-2) var(--e-out); }
.mdev.is-focus .mdev__dot { background: var(--c-red); border-color: var(--c-red); }
.mdev--win { justify-items: stretch; }
.mdev__frame { border-radius: .625rem .625rem 0 0; overflow: hidden; background: #fff; border: 1px solid rgba(25, 24, 23, .16); border-bottom: 0; box-shadow: 0 1.5rem 3rem -1.75rem rgba(25, 24, 23, .45); height: 13rem; }
.mdev__frame img { width: 100%; height: auto; }
.mdev__bar { display: flex; align-items: center; gap: .375rem; height: 1.75rem; padding: 0 .75rem; background: #FAF8F5; border-bottom: 1px solid #E9E5DE; }
.mdev__bar i { width: .5rem; height: .5rem; border-radius: 50%; border: 1px solid #BDB7AC; }
.strings { margin-top: -2.5rem; position: relative; background: #fff; color: var(--c-ink); border-radius: .625rem; border: 1px solid rgba(25, 24, 23, .14); overflow: hidden; box-shadow: 0 1.5rem 3rem -1.5rem rgba(25, 24, 23, .5); }
.strings__bar { display: flex; align-items: center; justify-content: space-between; height: 2.5rem; padding: 0 .875rem; background: #FAF8F5; border-bottom: 1px solid #E9E5DE; font-size: .8125rem; }
.strings__lang { padding: 0 .5rem; line-height: 1.375rem; border-radius: 99rem; background: #EFECE6; font-size: .8125rem; }
.strings__n { color: #56534E; }
.strings__n b { color: var(--c-ink); font-weight: 600; font-size: .8125rem; }
.strings__row { display: grid; grid-template-columns: 1fr 1fr; column-gap: .75rem; row-gap: .125rem; padding: .5rem .875rem; font-size: .875rem; border-bottom: 1px solid #F0EDE7; transition: background var(--d-2) var(--e-out); }
.strings__row:last-child { border-bottom: 0; }
.strings__en { grid-column: 1 / -1; font-size: .8125rem; color: #66635E; }
.strings__row > span:nth-child(2) { color: #66635E; }
.strings__row > span:nth-child(3) { font-weight: 600; }
.strings__row [lang="zh-Hant-TW"] { font-family: "PingFang TC", "Microsoft JhengHei", "Noto Sans TC", "Noto Sans SC", sans-serif; }
.strings__row.is-on { background: #FFF5EC; }
.strings__row.is-on > span:nth-child(2) { text-decoration: line-through; text-decoration-color: rgba(192, 54, 44, .7); }
.mdev--win figcaption .body { color: var(--ink-muted); }

/* ---------- 在用的系统：横向滑动的卡片 ---------- */
.work { overflow: clip; border-top: 1px solid var(--line); }
.work .sec__bg { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; }
.work__head { position: relative; }
.mcards { position: relative; display: flex; gap: .75rem; margin-top: 2rem; padding: .5rem var(--gutter) 1.5rem; overflow-x: auto; scroll-snap-type: x mandatory; scroll-padding-inline: var(--gutter); scrollbar-width: none; -webkit-overflow-scrolling: touch; }
.mcards::-webkit-scrollbar { display: none; }
.mcards:focus-visible { outline: 2px solid var(--c-red-text); outline-offset: -2px; }
.mcard { flex: none; width: min(82vw, 21rem); scroll-snap-align: start; border-radius: var(--r-3); overflow: hidden; border: 1px solid rgba(25, 24, 23, .16); box-shadow: 0 1.25rem 2.5rem -1.75rem rgba(25, 24, 23, .45); }
.mcard__bar { display: flex; align-items: center; height: 3.25rem; padding: 0 1rem; border-bottom: 1px solid var(--line); background: #FAF8F5; }
.mcard__bar a { display: inline-flex; align-items: center; min-height: 2.75rem; }
.mcard__bar img { height: 1.625rem; width: auto; }
.mcard__shot { position: relative; height: 13rem; overflow: hidden; background: var(--c-paper); }
.mcard__shot > img { width: 100%; height: 100%; object-fit: cover; object-position: 0 0; }
.mcard__shot--zoom > img { width: 150%; max-width: none; height: auto; }
.mcard__shot--phones { display: flex; justify-content: center; gap: .875rem; padding-top: 1rem; }
.mcard__shot--phones > img { width: 7.5rem; height: auto; align-self: flex-start; border-radius: .875rem; border: .25rem solid var(--c-ink); }
.mcard__shot--win { display: flex; justify-content: center; padding-top: 1rem; }
.mcard__shot--win > img { width: 12rem; height: auto; align-self: flex-start; border-radius: .5rem; border: 1px solid rgba(25, 24, 23, .14); }
.mcard__t { padding: .875rem 1rem 1.125rem; border-top: 1px solid var(--line); font-size: 1rem; line-height: 1.45; color: var(--ink); }
.work__foot { position: relative; display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.work__foot .link { min-height: 2.75rem; }
.mcards__dots { display: flex; gap: .5rem; }
.mcards__dots li { width: .5rem; height: .5rem; border-radius: 50%; border: 1px solid var(--ink-subtle); transition: background var(--d-2) var(--e-out), border-color var(--d-2) var(--e-out); }
.mcards__dots li.is-on { background: var(--c-red); border-color: var(--c-red); }

/* ---------- AI ready（深色） ---------- */
.ready { overflow: clip; }
.ready .h-2 { margin-top: 1rem; }
.ready__fig { position: relative; height: min(92vw, 24rem); margin-top: 1rem; }
.ready__fig canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.ready__list { border-top: 1px solid var(--line-strong); }
.rdy { display: grid; grid-template-columns: 2.25rem minmax(0, 1fr); align-items: baseline; padding: .875rem 0 .9375rem; border-bottom: 1px solid var(--line); font-size: 1.125rem; line-height: 1.35; letter-spacing: -0.01em; color: var(--ink-muted); }
.rdy .mono { font-size: .8125rem; color: var(--ink-subtle); }
.rdy.is-on > span:last-child { color: var(--ink); }
.rdy.is-on .mono { color: var(--accent-text); }
.ready__more { margin-top: 1.5rem; min-height: 2.75rem; }

/* ---------- 问答 ---------- */
.faq .h-2 { margin-top: 1rem; }
.faq__list { margin-top: 1.75rem; border-top: 1px solid var(--line-strong); }
.qa { border-bottom: 1px solid var(--line); }
.qa h3 { font: inherit; }
.qa__q { display: grid; grid-template-columns: minmax(0, 1fr) 1.875rem; align-items: center; column-gap: 1rem; width: 100%; min-height: 4.25rem; padding: 1rem 0; text-align: left; font-size: 1.1875rem; line-height: 1.3; font-weight: 450; letter-spacing: -0.015em; color: var(--ink); }
.qa__ring { position: relative; width: 1.875rem; height: 1.875rem; border-radius: 50%; border: 1px solid var(--line-strong); }
.qa__ring::before, .qa__ring::after { content: ""; position: absolute; inset: 0; margin: auto; background: var(--ink); transition: transform var(--d-3) var(--e-out), opacity var(--d-2) var(--e-out), background var(--d-2) var(--e-out), width var(--d-3) var(--e-spring), height var(--d-3) var(--e-spring), border-radius var(--d-2) var(--e-out); }
.qa__ring::before { width: .6875rem; height: 1.5px; }
.qa__ring::after { width: 1.5px; height: .6875rem; }
.qa.is-open .qa__ring { border: 2px solid var(--ink); }
.qa.is-open .qa__ring::before { opacity: 0; }
.qa.is-open .qa__ring::after { width: .5625rem; height: .5625rem; border-radius: 50%; background: var(--c-red); }
.qa__a { display: grid; grid-template-rows: 0fr; visibility: hidden; transition: grid-template-rows var(--d-3) var(--e-out), visibility 0s linear var(--d-3); }
.qa__a > div { min-height: 0; overflow: hidden; }
.qa__a p { padding: 0 2.5rem 1.375rem 0; font-size: 1rem; line-height: 1.6; color: var(--ink-muted); }
.qa.is-open .qa__a { grid-template-rows: 1fr; visibility: visible; transition-delay: 0s; }
html:not(.js) .qa__a { grid-template-rows: 1fr; visibility: visible; }

/* ---------- 收尾 ---------- */
.close { overflow: clip; border-top: 1px solid var(--line); }
.close .sec__bg { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; }
.close__in { position: relative; display: grid; justify-items: center; text-align: center; padding-block: 6rem 6.5rem; }
.close__h { font-size: clamp(2.375rem, 11.4vw, 3.25rem); line-height: 1.04; font-family: var(--f-serif); font-weight: 300; }
.close__h .ln { padding-bottom: .16em; margin-bottom: -.1em; }
.close__h .v-serif { letter-spacing: -0.03em; }
.close__h .v-sans { letter-spacing: -0.05em; }
.close__cta { display: grid; justify-items: center; margin-top: 2.5rem; }
.btn--lg { --btn-h: 3.5rem; padding: 0 1.75rem 0 1.375rem; gap: .75rem; font-size: 1.0625rem; }
.close__mail { margin-top: 1rem; font-size: 1rem; color: var(--ink-muted); }

/* ---------- 页脚 ---------- */
.sec.foot { padding-block: 3.5rem calc(2rem + env(safe-area-inset-bottom)); }
.foot__top { display: grid; row-gap: 2rem; padding-bottom: 2.5rem; }
.foot__mark { display: block; line-height: 0; }
.foot__mark img { height: 4rem; width: auto; }
.foot__nav { display: grid; grid-template-columns: 1fr 1fr; column-gap: 1rem; }
.foot__nav a { display: flex; align-items: center; min-height: 2.875rem; font-size: 1.0625rem; font-weight: 500; text-decoration: none; color: var(--ink); border-bottom: 1px solid var(--line); }
.foot__lang:lang(zh-Hans) { font-family: "PingFang SC", "Microsoft YaHei", var(--f-sans); }
.foot__base { display: grid; grid-template-columns: minmax(0, 1fr) auto; row-gap: 1rem; align-items: center; padding-top: 1.25rem; border-top: 1px solid var(--line); }
.foot__copy { font-size: .875rem; color: var(--ink-subtle); }
.foot__dev { justify-self: end; display: inline-flex; align-items: center; min-height: 2.75rem; font-size: .9375rem; color: var(--ink-muted); }
.foot__values { grid-column: 1 / -1; height: 1.375rem; width: auto; }
.foot__credit { margin-top: 1.25rem; font-size: .8125rem; line-height: 1.55; color: var(--ink-subtle); overflow-wrap: anywhere; }
.foot__credit a { color: inherit; text-decoration: underline; text-decoration-color: var(--line-strong); text-underline-offset: 3px; }