/* SparkRing 官网（生成自 site/build.py）。颜色沿用 App 规范：奶白底、墨色字、青柠 → 叶绿 → 薄荷渐变。 */
@font-face { font-family: Geist; font-weight: 300; font-display: swap; src: url(/assets/fonts/Geist-Light.ttf) format("truetype"); }
@font-face { font-family: Geist; font-weight: 400; font-display: swap; src: url(/assets/fonts/Geist-Regular.ttf) format("truetype"); }
@font-face { font-family: Geist; font-weight: 500; font-display: swap; src: url(/assets/fonts/Geist-Medium.ttf) format("truetype"); }
:root {
  --ink: #1b1d1a; --ink-2: #6d6f68; --ink-3: #9a9c94; --cream: #f6f4ef; --paper: #fbfaf7; --line: rgba(27, 29, 26, 0.09);
  --night: #0b0c0a; --night-2: #151714; --on-dark: #f3f1ea; --on-dark-2: rgba(243, 241, 234, 0.62);
  --lime: #c6f060; --grad: linear-gradient(90deg, #8fd136 0%, #3f9e3a 48%, #2f9c8a 100%);
  --grad-dark: linear-gradient(90deg, #d4f555 0%, #8fdc5a 45%, #7de2d1 100%);
  --sans: -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
  --num: Geist, -apple-system, BlinkMacSystemFont, "Helvetica Neue", sans-serif;
  --gut: 24px; --max: 1160px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 64px; -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--cream); color: var(--ink); font: 400 17px/1.6 var(--sans); -webkit-font-smoothing: antialiased; overflow-x: hidden; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 var(--gut); }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 16px; top: 12px; z-index: 99; padding: 8px 14px; border-radius: 10px; background: #fff; }
br.m { display: none; }
:focus-visible { outline: 2px solid #55b92f; outline-offset: 3px; border-radius: 6px; }

/* 导航：半透明毛玻璃，滚过首屏后变浅色 */
.nav { position: fixed; z-index: 50; top: 0; left: 0; right: 0; height: 56px; color: var(--on-dark);
  background: rgba(11, 12, 10, 0.55); -webkit-backdrop-filter: saturate(180%) blur(20px); backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06); transition: background .3s, color .3s, border-color .3s; }
.nav.lite, .download .nav { color: var(--ink); background: rgba(246, 244, 239, 0.78); border-bottom-color: var(--line); }
.nav-in { max-width: var(--max); height: 100%; margin: 0 auto; padding: 0 var(--gut); display: flex; align-items: center; gap: 28px; }
.brand { display: inline-flex; align-items: center; gap: 9px; font: 500 17px/1 var(--num); letter-spacing: 0.01em; }
.brand img { border-radius: 7px; }
.links { display: flex; gap: 26px; margin: 0 auto; font-size: 14px; opacity: .82; }
.links a:hover { opacity: 1; color: var(--lime); }
.nav.lite .links a:hover, .download .links a:hover { color: #3f9e3a; }
.nav-r { display: flex; align-items: center; gap: 16px; font-size: 14px; }
.lang { opacity: .8; }
.pill { display: inline-flex; align-items: center; height: 32px; padding: 0 15px; border-radius: 16px; background: var(--lime); color: #17210a; font-weight: 500; }

/* 按钮 */
.btn { display: inline-flex; align-items: center; justify-content: center; height: 48px; padding: 0 26px; border-radius: 24px;
  font: 500 16px/1 var(--sans); border: 0; cursor: pointer; transition: transform .2s, filter .2s; }
.btn:hover { filter: brightness(1.04); transform: translateY(-1px); }
.btn.lime { background: var(--lime); color: #17210a; }
.btn.ghost { background: rgba(27, 29, 26, 0.06); color: var(--ink); }
.btn.big { height: 54px; min-width: 220px; font-size: 17px; border-radius: 27px; }
.btn[aria-disabled] { cursor: default; color: var(--ink-3); transform: none; }
.more { color: var(--lime); font-size: 17px; }
.more span { display: inline-block; transition: transform .2s; }
.more:hover span { transform: translateX(3px); }

/* 通用排版 */
.eyebrow { font-size: 15px; font-weight: 500; letter-spacing: .04em; color: #3f9e3a; margin-bottom: 14px; }
h1 { font-size: clamp(48px, 7.4vw, 104px); line-height: 1.06; font-weight: 600; letter-spacing: -0.015em; }
h2 { font-size: clamp(36px, 5.2vw, 68px); line-height: 1.12; font-weight: 600; letter-spacing: -0.012em; }
h3 { font-size: 24px; line-height: 1.3; font-weight: 600; }
.lead { font-size: clamp(17px, 1.6vw, 21px); line-height: 1.6; color: var(--ink-2); margin-top: 20px; }
.feat { padding: 140px 0; }
.sh { text-align: center; max-width: 860px; margin: 0 auto 64px; }
.chips { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin-top: 48px; }
.chips li { padding: 9px 16px; border-radius: 999px; background: rgba(27, 29, 26, 0.05); font-size: 14px; color: #4a4c46; }
.txt .chips { justify-content: flex-start; margin-top: 32px; }

/* 首屏 */
.hero { position: relative; min-height: 100vh; min-height: 100svh; display: flex; flex-direction: column; justify-content: center;
  background: var(--night); color: var(--on-dark); overflow: hidden; padding: 96px 0 40px; }
.hero-bg { position: absolute; inset: 0; }
.hero-bg img { width: 100%; height: 100%; object-fit: cover; object-position: 30% 50%; animation: zoom 14s ease-out both; }
.hero::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(11,12,10,0) 30%, rgba(11,12,10,.55) 62%, rgba(11,12,10,.7) 100%),
  linear-gradient(0deg, rgba(11,12,10,.85) 0%, rgba(11,12,10,0) 30%); pointer-events: none; }
.hero-in { position: relative; z-index: 1; width: 100%; }
.hero-in > * { margin-left: 52%; }
.hero .eyebrow { color: var(--lime); }
.hero h1 { background: linear-gradient(180deg, #ffffff 30%, #d9d6cc 100%); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero .lead { color: var(--on-dark-2); }
.ctas { display: flex; align-items: center; gap: 28px; margin-top: 36px; }
.hero-stats { position: relative; z-index: 1; width: 100%; display: grid; grid-template-columns: repeat(4, 1fr); margin-top: auto; padding-top: 72px; }
.hero-stats li { display: flex; flex-direction: column-reverse; gap: 6px; padding: 18px 0 0; border-top: 1px solid rgba(255,255,255,.14); margin-right: 24px; }
.hero-stats b, .nums b { font: 300 clamp(34px, 4vw, 52px)/1 var(--num); letter-spacing: -0.03em; }
.hero-stats small, .nums small { font-size: .42em; margin-left: 4px; letter-spacing: 0; color: var(--on-dark-2); font-weight: 400; }
.hero-stats span { font-size: 13px; color: var(--on-dark-2); }
@keyframes zoom { from { transform: scale(1.08); } to { transform: none; } }

/* 三栏陈述（参考 vivi） */
.intro { padding: 150px 0 120px; text-align: center; }
.kicker { font-size: 17px; color: var(--ink-2); }
.intro h2 { margin-top: 12px; font-size: clamp(42px, 6.4vw, 84px); }
.trio { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; margin-top: 96px; text-align: left; }
.trio div { border-top: 1px solid var(--line); padding-top: 20px; }
.trio i { display: block; font: 400 13px/1 var(--num); font-style: normal; color: var(--ink-3); margin-bottom: 28px; }
.trio b { display: block; font-size: 22px; font-weight: 600; }
.trio span { display: block; margin-top: 8px; font-size: 15px; color: var(--ink-2); }

/* 图 + 手机 */
.light { background: var(--paper); }
.light2 { background: #efeee8; }
.duo-row { display: grid; grid-template-columns: 1.25fr 1fr; gap: 28px; align-items: stretch; }
.duo-row.rev { grid-template-columns: 1fr 1.25fr; }
.photo { margin: 0; border-radius: 28px; overflow: hidden; background: #e9e6de; }
.photo img { width: 100%; height: 100%; object-fit: cover; }
.photo.tall { aspect-ratio: 4 / 5; }
.phone-stage { display: grid; place-items: center; padding: 40px 20px; border-radius: 28px; background:
  radial-gradient(80% 60% at 30% 10%, rgba(212, 245, 85, .30), rgba(212, 245, 85, 0) 70%),
  radial-gradient(70% 60% at 90% 100%, rgba(125, 226, 209, .28), rgba(125, 226, 209, 0) 70%), #eef0e6; }
.phone { margin: 0; width: min(300px, 100%); padding: 9px; border-radius: 46px; background: #121311;
  box-shadow: 0 0 0 1.5px #3a3b38 inset, 0 40px 70px -20px rgba(20, 30, 10, .35); }
.phone img { width: 100%; border-radius: 37px; }
.phone.sm { width: 210px; padding: 7px; border-radius: 34px; }
.phone.sm img { border-radius: 27px; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.split .phone-stage { aspect-ratio: 1 / 1.08; }
.facts { margin-top: 36px; border-top: 1px solid var(--line); }
.facts li { display: flex; justify-content: space-between; gap: 20px; padding: 16px 0; border-bottom: 1px solid var(--line); font-size: 15px; }
.facts b { font-weight: 600; }
.facts span { color: var(--ink-2); text-align: right; }

/* 深色段 */
.dark { background: var(--night); color: var(--on-dark); }
.dark .eyebrow { color: var(--lime); }
.dark h2 span, .grad { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.dark .lead { color: var(--on-dark-2); }
.dark .photo { background: #1a1b19; }
.dark .phone-stage { background: radial-gradient(70% 60% at 50% 30%, rgba(143, 220, 90, .16), rgba(143, 220, 90, 0) 70%), var(--night-2); }
.dark .phone { background: #050505; box-shadow: 0 0 0 1.5px #2c2d2b inset, 0 40px 70px -20px rgba(0, 0, 0, .6); }
.dark .chips li { background: rgba(255, 255, 255, .07); color: var(--on-dark-2); }
.nums { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 64px; }
.nums li { display: flex; flex-direction: column; gap: 10px; padding-top: 20px; border-top: 1px solid rgba(255,255,255,.14); }
.nums b { background: var(--grad-dark); -webkit-background-clip: text; background-clip: text; color: transparent; }
.nums b small { -webkit-text-fill-color: var(--on-dark-2); }
.nums span { font-size: 14px; color: var(--on-dark-2); }
.nums.small { margin-top: 36px; }
.nums.small li { border-top-color: var(--line); }
.nums.small b { font-size: 40px; background: var(--grad); -webkit-background-clip: text; background-clip: text; }
.nums.small b small, .nums.small span { color: var(--ink-2); -webkit-text-fill-color: var(--ink-2); }
.mood { padding-top: 40px; }
.mood .phone-stage { aspect-ratio: 1 / 1.08; }

/* 绒绒 */
.pet { background: radial-gradient(70% 50% at 20% 0%, rgba(212, 245, 85, .35), rgba(212, 245, 85, 0) 60%),
  radial-gradient(60% 50% at 100% 100%, rgba(125, 226, 209, .30), rgba(125, 226, 209, 0) 65%), linear-gradient(180deg, #eef3e2, #f4f1ea); }
.pets { display: grid; grid-template-columns: repeat(6, 1fr); gap: 16px; }
.pets li { display: flex; flex-direction: column; align-items: center; gap: 8px; padding: 22px 8px 20px; border-radius: 24px; background: rgba(255, 255, 255, .55); }
.pets img { width: 100%; max-width: 150px; filter: drop-shadow(0 14px 16px rgba(31, 77, 42, .16)); transition: transform .4s cubic-bezier(.3,1.6,.5,1); }
.pets li:hover img { transform: translateY(-6px) scale(1.04); }
.pets b { font-size: 15px; font-weight: 500; }

/* 功能网格 */
.tiles { display: grid; grid-template-columns: repeat(6, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 24px; overflow: hidden; }
.tiles li { display: flex; flex-direction: column; gap: 4px; padding: 26px 20px; background: var(--cream); }
.tiles .ic { color: #3f9e3a; margin-bottom: 14px; }
.tiles b { font-size: 16px; font-weight: 600; }
.tiles span { font-size: 13px; color: var(--ink-2); }
.bento { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-top: 24px; }
.card { border-radius: 28px; background: var(--paper); padding: 40px; }
.bento .card { display: grid; grid-template-columns: 1fr auto; gap: 28px; align-items: end; overflow: hidden; padding-bottom: 0; }
.bento .card > div { align-self: start; }
.bento .phone { margin-bottom: -120px; }
.bento h3 { font-size: 28px; }
.card p:not(.eyebrow) { margin-top: 10px; font-size: 15px; color: var(--ink-2); }

/* 配色 */
.design { background: var(--paper); }
.picker { display: flex; flex-direction: column; align-items: center; }
.rings { position: relative; width: min(340px, 70vw); aspect-ratio: 640 / 813; }
.rings .ring { position: absolute; inset: 0; width: 100%; opacity: 0; transform: scale(.96); transition: opacity .5s, transform .6s;
  filter: drop-shadow(0 34px 34px rgba(31, 40, 20, .2)); }
.rings .ring.on { opacity: 1; transform: none; }
.sws { margin-top: 36px; text-align: center; }
.sw-row { display: flex; gap: 14px; justify-content: center; }
.sw { width: 30px; height: 30px; border-radius: 50%; border: 0; padding: 0; cursor: pointer; background: var(--c);
  box-shadow: inset 0 0 0 1px rgba(0,0,0,.12), 0 0 0 3px var(--paper), 0 0 0 4px transparent; transition: box-shadow .2s; }
.sw.on { box-shadow: inset 0 0 0 1px rgba(0,0,0,.12), 0 0 0 3px var(--paper), 0 0 0 4.5px var(--ink); }
.sw-name { margin-top: 14px; font-size: 15px; color: var(--ink-2); }
.wide { margin: 96px 0 0; border-radius: 28px; overflow: hidden; }
.wide img { width: 100%; }

/* 三卡 */
.three { padding-top: 0; background: #efeee8; }
.cards3 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.cards3 .card { padding: 34px 30px; }
.cards3 .ic { color: #3f9e3a; margin-bottom: 26px; }
.cards3 h3 { font-size: 20px; }

/* 尺码 */
.sizes { background: var(--cream); }
.measure { margin-top: 32px; counter-reset: m; }
.measure li { position: relative; padding: 10px 0 10px 44px; font-size: 15px; color: var(--ink-2); counter-increment: m; }
.measure li::before { content: counter(m); position: absolute; left: 0; top: 8px; width: 28px; height: 28px; border-radius: 50%;
  display: grid; place-items: center; background: var(--grad); color: #fff; font: 500 14px/1 var(--num); }
.size-card { border-radius: 28px; background: var(--paper); padding: 36px 40px; }
.size-card .k { font-size: 14px; color: var(--ink-3); margin-bottom: 8px; }
.size-list li { display: flex; justify-content: space-between; align-items: baseline; padding: 15px 0; border-bottom: 1px solid var(--line); }
.size-list li:last-child { border-bottom: 0; }
.size-list b { font: 400 26px/1 var(--num); }
.size-list b::after { content: " 号"; font: 400 14px var(--sans); color: var(--ink-2); }
:lang(en) .size-list b::before { content: "US "; font: 400 14px var(--sans); color: var(--ink-2); }
:lang(en) .size-list b::after { content: ""; }
.size-list span { font: 300 26px/1 var(--num); }
.size-list small { font-size: 14px; margin-left: 4px; color: var(--ink-2); }

/* 规格 */
.specs { background: var(--paper); }
.spec-wrap { display: grid; grid-template-columns: 300px 1fr; gap: 80px; align-items: start; }
.spec-ring { position: sticky; top: 120px; width: 100%; filter: drop-shadow(0 30px 30px rgba(31,40,20,.18)); }
.spec div { display: grid; grid-template-columns: 160px 1fr; gap: 20px; padding: 20px 0; border-bottom: 1px solid var(--line); }
.spec dt { font-size: 15px; color: var(--ink-2); }
.spec dd { margin: 0; font-size: 17px; }

/* 下载 */
.dl { padding: 140px 0; text-align: center; background: linear-gradient(180deg, var(--cream), #eaf0dc); }
.dl-page .dl { min-height: calc(100vh - 180px); padding-top: 140px; }
.dl-icon { margin: 0 auto 28px; border-radius: 26px; box-shadow: 0 24px 40px -16px rgba(31, 60, 20, .35); }
.dl-grid { display: grid; grid-template-columns: 1.3fr 1fr 1fr; gap: 20px; margin-top: 56px; text-align: left; }
.dl-card { border-radius: 28px; background: var(--paper); padding: 34px; display: flex; flex-direction: column; align-items: flex-start; gap: 18px; }
.dl-os { display: flex; align-items: center; gap: 10px; font-size: 20px; }
.dl-os .ic { color: #3ddc84; }
.ios .dl-os .ic { color: var(--ink); }
.dl-card .meta { font-size: 14px; color: var(--ink-2); }
.steps { counter-reset: s; border-top: 1px solid var(--line); padding-top: 10px; width: 100%; }
.steps li { position: relative; padding: 8px 0 8px 30px; font-size: 14px; color: var(--ink-2); counter-increment: s; }
.steps li::before { content: counter(s); position: absolute; left: 0; top: 9px; width: 20px; height: 20px; border-radius: 50%;
  display: grid; place-items: center; font: 500 12px/1 var(--num); background: rgba(27,29,26,.07); color: var(--ink); }
.qr { align-items: center; justify-content: center; text-align: center; }
.qr-box { width: 168px; height: 168px; padding: 14px; border-radius: 20px; background: #fff; box-shadow: inset 0 0 0 1px var(--line); }
.qr-box svg { width: 100%; height: 100%; display: block; }
.qr p { font-size: 14px; color: var(--ink-2); }
.qr b { color: var(--ink); font-size: 16px; }
.sha { margin-top: 36px; font-size: 12px; color: var(--ink-3); word-break: break-all; }
.sha code { font: 400 12px/1.6 ui-monospace, Menlo, monospace; }

/* 页脚 */
.foot { background: var(--night); color: var(--on-dark-2); padding: 56px 0 40px; font-size: 13px; }
.foot-top { display: flex; justify-content: space-between; align-items: center; gap: 24px; flex-wrap: wrap; padding-bottom: 28px; border-bottom: 1px solid rgba(255,255,255,.1); }
.foot .brand { color: var(--on-dark); }
.foot nav { display: flex; gap: 22px; flex-wrap: wrap; }
.foot nav a:hover, .foot-bot a:hover { color: var(--on-dark); }
.foot .note { margin-top: 24px; max-width: 760px; line-height: 1.7; }
.foot-bot { display: flex; justify-content: space-between; margin-top: 28px; }

/* 微信内打开：提示去浏览器 */
.wx { position: fixed; inset: 0; z-index: 100; background: rgba(11, 12, 10, .86); color: #fff; display: flex; flex-direction: column;
  align-items: flex-end; padding: 18px 22px; gap: 22px; text-align: right; }
.wx[hidden] { display: none; }
.wx-arrow { width: 64px; height: 80px; margin-right: 6px; border-top: 3px solid var(--lime); border-right: 3px solid var(--lime); border-radius: 0 40px 0 0; position: relative; }
.wx-arrow::after { content: ""; position: absolute; right: -10px; top: -10px; border: 8px solid transparent; border-bottom-color: var(--lime); transform: rotate(0deg); }
.wx p { max-width: 300px; font-size: 16px; line-height: 1.7; }
.wx p b { display: block; font-size: 22px; margin-bottom: 6px; color: var(--lime); }
.wx .btn { background: rgba(255,255,255,.14); color: #fff; }

/* 进场 */
.js .rv { opacity: 0; transform: translateY(28px); transition: opacity .9s cubic-bezier(.2,.7,.2,1), transform .9s cubic-bezier(.2,.7,.2,1); }
.js .rv.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js .rv { opacity: 1; transform: none; transition: none; }
  .hero-bg img { animation: none; }
}

/* 平板 */
@media (max-width: 1060px) {
  .links { display: none; }
  .nav-r { margin-left: auto; }
  .tiles { grid-template-columns: repeat(3, 1fr); }
  .cards3 { grid-template-columns: 1fr 1fr; }
  .dl-grid { grid-template-columns: 1fr 1fr; }
  .dl-grid .dl-card:first-child { grid-column: 1 / -1; }
  .pets { grid-template-columns: repeat(3, 1fr); }
  .bento { grid-template-columns: 1fr; }
}

/* 手机 */
@media (max-width: 760px) {
  :root { --gut: 16px; }
  body { font-size: 16px; }
  br.m { display: inline; }
  br.d { display: none; }
  .nav { height: 52px; }
  .brand span { font-size: 16px; }
  .feat { padding: 88px 0; }
  .sh { margin-bottom: 40px; }
  .hero { justify-content: flex-start; padding-top: 0; }
  .hero-bg img { object-position: 50% 30%; }
  .hero::after { background: linear-gradient(0deg, rgba(11,12,10,.95) 0%, rgba(11,12,10,.55) 40%, rgba(11,12,10,0) 62%); }
  .hero-in { margin-top: auto; padding-top: 52vh; }
  .hero-in > * { margin-left: 0; }
  .ctas { gap: 22px; margin-top: 28px; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); padding-top: 40px; row-gap: 22px; }
  .hero-stats li { margin-right: 16px; }
  .intro { padding: 96px 0 72px; }
  .trio { grid-template-columns: 1fr; gap: 24px; margin-top: 56px; }
  .duo-row, .duo-row.rev, .grid2 { grid-template-columns: 1fr; gap: 20px; }
  .grid2 { gap: 44px; }
  .duo-row.rev .phone-stage { order: 2; }
  .photo { aspect-ratio: 4 / 5; border-radius: 22px; }
  .phone-stage { border-radius: 22px; padding: 32px 16px; }
  .phone { width: min(250px, 72vw); border-radius: 40px; }
  .phone img { border-radius: 32px; }
  .split .phone-stage, .mood .phone-stage { aspect-ratio: auto; }
  .split .grid2 > .phone-stage { order: 2; }
  .chips { margin-top: 32px; gap: 8px; }
  .chips li { font-size: 13px; padding: 8px 13px; }
  .nums { grid-template-columns: 1fr 1fr 1fr; gap: 14px; margin-top: 44px; }
  .nums span { font-size: 12px; }
  .tiles { grid-template-columns: repeat(2, 1fr); border-radius: 20px; }
  .tiles li { padding: 20px 16px; }
  .bento .card { grid-template-columns: 1fr; padding: 30px 24px 0; justify-items: center; }
  .bento .card > div { justify-self: stretch; }
  .bento .phone { margin-bottom: -150px; }
  .card { border-radius: 22px; }
  .pets { gap: 10px; }
  .pets li { padding: 16px 6px 14px; border-radius: 18px; }
  .cards3 { grid-template-columns: 1fr; }
  .wide { margin-top: 56px; border-radius: 20px; }
  .size-card { padding: 24px; border-radius: 22px; }
  .spec-wrap { grid-template-columns: 1fr; gap: 24px; }
  .spec-ring { position: static; width: 180px; margin: 0 auto; }
  .spec div { grid-template-columns: 96px 1fr; gap: 14px; padding: 16px 0; }
  .spec dd { font-size: 15px; }
  .dl { padding: 96px 0; }
  .dl-grid { grid-template-columns: 1fr; }
  .dl-grid .qr { display: none; }
  .btn.big { width: 100%; }
  .foot-bot { flex-direction: column; gap: 12px; }
}