/* 阿秒新版官网：配色跟新客户端走（微信桌面版的灰阶 + 微信绿），文字按钮用深一档的绿保证对比度 */
:root{
  --bg:#FFFFFF;--soft:#F5F5F5;--card:#FFFFFF;--line:#E7E7E7;
  --ink:#191919;--ink-2:#4C4C4C;--ink-3:#6B6B6B;
  --green:#07C160;--green-btn:#05843F;--green-hover:#047A3B;--green-ink:#06763D;--green-bg:#E8F6EE;
  --shot:0 24px 60px -30px rgba(0,0,0,.35),0 0 0 1px rgba(0,0,0,.08);
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --r:14px;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#191919;--soft:#202020;--card:#262626;--line:#2E2E2E;
  --ink:#E6E6E6;--ink-2:#C2C2C2;--ink-3:#8F8F8F;
  --green-ink:#4FD08F;--green-bg:#163A28;
  --shot:0 24px 60px -30px rgba(0,0,0,.8),0 0 0 1px rgba(255,255,255,.08);
  color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#191919;--soft:#202020;--card:#262626;--line:#2E2E2E;
  --ink:#E6E6E6;--ink-2:#C2C2C2;--ink-3:#8F8F8F;
  --green-ink:#4FD08F;--green-bg:#163A28;
  --shot:0 24px 60px -30px rgba(0,0,0,.8),0 0 0 1px rgba(255,255,255,.08);
  color-scheme:dark}

*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:72px}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font);font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased;overflow-x:hidden;font-variant-numeric:tabular-nums}
h1,h2,h3{margin:0;text-wrap:balance;letter-spacing:-.01em}
p,ul,dl,dd,figure{margin:0}
ul{padding:0;list-style:none}
a{color:inherit}
img{display:block;max-width:100%;height:auto}
button,input{font:inherit;color:inherit}
.wrap{max-width:1160px;margin:0 auto;padding-inline:24px}
.narrow{max-width:800px}
@media (max-width:640px){.wrap{padding-inline:16px}}

.btn{display:inline-flex;align-items:center;justify-content:center;height:48px;padding:0 24px;border-radius:10px;font-size:16px;font-weight:600;text-decoration:none;border:1px solid transparent;white-space:nowrap;cursor:pointer}
.btn-sm{height:38px;padding:0 16px;font-size:14px;border-radius:8px}
.btn-primary{background:var(--green-btn);color:#fff}
.btn-primary:hover{background:var(--green-hover)}
.btn-line{background:var(--card);border-color:var(--line)}
.btn-line:hover{border-color:var(--ink-3)}
.btn:focus-visible,a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible{outline:2px solid var(--green);outline-offset:2px}

/* 顶栏 */
.top{position:sticky;top:0;z-index:10;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:saturate(1.6) blur(12px);-webkit-backdrop-filter:saturate(1.6) blur(12px);border-bottom:1px solid var(--line)}
.bar{display:flex;align-items:center;gap:32px;height:60px}
.brand{display:flex;align-items:center;gap:8px;font-weight:700;font-size:18px;text-decoration:none}
.links{display:flex;gap:24px;margin-right:auto;font-size:15px}
.links a{text-decoration:none;color:var(--ink-2)}
.links a:hover{color:var(--ink)}
@media (max-width:760px){.links{display:none}.bar{justify-content:space-between}}

/* 首屏 */
.hero{padding:72px 0 0;text-align:center}
.eyebrow{color:var(--green-ink);font-weight:600;font-size:15px;margin-bottom:12px}
.hero h1{font-size:clamp(32px,5.4vw,56px);line-height:1.2}
.lead{max-width:640px;margin:20px auto 0;color:var(--ink-2);font-size:18px}
.cta{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:32px}
.facts{display:flex;gap:8px 24px;justify-content:center;flex-wrap:wrap;margin-top:20px;color:var(--ink-3);font-size:14px}
.facts li::before{content:"";display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--green);margin-right:8px;vertical-align:middle}
.shot{border-radius:var(--r);overflow:hidden;box-shadow:var(--shot);background:#F5F5F5}
.shot-hero{margin-top:56px;border-bottom-left-radius:0;border-bottom-right-radius:0}
@media (max-width:640px){.hero{padding-top:48px}.lead{font-size:16px}.shot-hero{margin-top:40px}}

/* 通用段落 */
section{padding:96px 0}
.hero{padding-bottom:0}
.band{background:var(--soft)}
h2{font-size:clamp(26px,3.4vw,36px);line-height:1.3}
.sub{color:var(--ink-2);margin-top:12px;max-width:680px}
@media (max-width:640px){section{padding:64px 0}}

.grid4,.grid3{display:grid;gap:16px;margin-top:40px}
.grid4{grid-template-columns:repeat(4,1fr)}
.grid3{grid-template-columns:repeat(3,1fr)}
.grid4 li,.grid3 li{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:24px}
.grid4 h3,.grid3 h3{font-size:17px;margin-bottom:8px}
.grid4 p,.grid3 p{color:var(--ink-2);font-size:15px}
@media (max-width:960px){.grid4{grid-template-columns:repeat(2,1fr)}.grid3{grid-template-columns:1fr}}
@media (max-width:560px){.grid4{grid-template-columns:1fr}}

/* 功能：一段文字配一张截图，左右交替 */
.feature{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:56px;align-items:center}
.feature+.feature{margin-top:112px}
.feature.flip .copy{order:2}
.feature .copy>p:not(.eyebrow){color:var(--ink-2);margin-top:16px}
.ticks{margin-top:20px;display:grid;gap:10px}
.ticks li{position:relative;padding-left:26px;color:var(--ink-2);font-size:15px}
.ticks li::before{content:"";position:absolute;left:2px;top:.55em;width:12px;height:7px;border-left:2px solid var(--green);border-bottom:2px solid var(--green);transform:rotate(-45deg)}
@media (max-width:900px){.feature{grid-template-columns:1fr;gap:32px}.feature.flip .copy{order:0}.feature+.feature{margin-top:72px}}

/* 本地版 / 云版 */
.modes{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:40px}
.mode{border:1px solid var(--line);border-radius:var(--r);padding:28px;background:var(--card)}
.mode:first-child{border-color:var(--green)}
.mode h3{font-size:22px}
.mode>p:not(.tag){color:var(--ink-2);margin-top:4px}
.tag{display:inline-block;font-size:13px;font-weight:600;padding:2px 10px;border-radius:999px;background:var(--soft);color:var(--ink-2);margin-bottom:12px}
.tag-green{background:var(--green-bg);color:var(--green-ink)}
@media (max-width:760px){.modes{grid-template-columns:1fr}}

/* 价格 */
.plans{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:40px}
.plan{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:24px;display:flex;flex-direction:column}
.plan-main{border-color:var(--green);box-shadow:0 0 0 1px var(--green)}
.plan h3{font-size:17px}
.price{font-size:32px;font-weight:700;margin-top:8px;line-height:1.3}
.price small{font-size:14px;font-weight:400;color:var(--ink-3);margin-left:4px}
.plan .ticks{margin-top:16px}
@media (max-width:1040px){.plans{grid-template-columns:repeat(2,1fr)}}
@media (max-width:560px){.plans{grid-template-columns:1fr}}

.calc{display:grid;grid-template-columns:1fr 1fr;gap:0;margin-top:24px;background:var(--card);border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.calc-in,.calc-out{padding:28px}
.calc-out{background:var(--green-bg)}
.calc h3{font-size:17px;margin-bottom:16px}
.seg{display:inline-flex;background:var(--soft);border-radius:10px;padding:3px}
.seg button{border:0;background:none;padding:6px 18px;border-radius:8px;cursor:pointer;color:var(--ink-2)}
.seg button[aria-checked="true"]{background:var(--card);color:var(--ink);font-weight:600;box-shadow:0 1px 2px rgba(0,0,0,.08)}
.count{display:flex;align-items:center;gap:10px;margin-top:20px;color:var(--ink-2);flex-wrap:wrap}
.stepper{display:inline-flex;border:1px solid var(--line);border-radius:8px;overflow:hidden}
.stepper button{width:36px;border:0;background:var(--soft);cursor:pointer;font-size:18px}
.stepper input{width:64px;border:0;text-align:center;background:var(--card);font-weight:600;-moz-appearance:textfield;appearance:textfield}
.stepper input::-webkit-inner-spin-button,.stepper input::-webkit-outer-spin-button{-webkit-appearance:none;margin:0}
#calc-range{width:100%;margin-top:20px;accent-color:var(--green-btn)}
.calc-total{font-size:40px;font-weight:700;line-height:1.2}
.calc-total small{font-size:15px;font-weight:400;color:var(--ink-2);margin-left:4px}
.calc-notes{margin-top:16px;display:grid;gap:6px;color:var(--ink-2);font-size:15px}
.calc-notes li::before{content:"· ";color:var(--green-ink)}
@media (max-width:760px){.calc{grid-template-columns:1fr}.calc-in,.calc-out{padding:20px}}

.rules-h{font-size:17px;margin-top:48px}
.rules{display:grid;grid-template-columns:repeat(2,1fr);gap:16px 32px;margin-top:16px}
.rules dt{font-weight:600}
.rules dd{color:var(--ink-2);font-size:15px}
@media (max-width:760px){.rules{grid-template-columns:1fr}}

/* 常见问题 */
#faq h2{margin-bottom:24px}
details{border-bottom:1px solid var(--line)}
summary{cursor:pointer;list-style:none;padding:18px 32px 18px 0;font-weight:600;font-size:17px;position:relative}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";position:absolute;right:4px;top:14px;font-size:22px;font-weight:400;color:var(--ink-3)}
details[open] summary::after{content:"−"}
details p{color:var(--ink-2);padding:0 0 20px}

.end{text-align:center;background:var(--soft)}
.end p{color:var(--ink-2);margin:12px 0 28px}

.foot{padding:32px 0 40px;color:var(--ink-3);font-size:13px;border-top:1px solid var(--line)}
.foot p+p{margin-top:4px}
.foot a{text-decoration:none}
.foot a:hover{text-decoration:underline}

/* 下载页 */
.dl{padding:72px 0 96px}
.dl h1{font-size:clamp(28px,4vw,40px)}
.dl-list{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-top:32px}
.dl-list li{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:24px}
.dl-list h2{font-size:19px}
.dl-list p{color:var(--ink-2);font-size:15px;margin:6px 0 16px}
.btn[aria-disabled="true"]{background:var(--soft);color:var(--ink-3);border-color:var(--line);cursor:default}
@media (max-width:760px){.dl-list{grid-template-columns:1fr}}