:root{
  --paper:#FBF7F2;
  --paper2:#F4EEE6;
  --ink:#2A2F36;
  --navy:#1F3A5F;
  --muted:#7C766E;
  --line:#E7E0D5;
  --amber:#C8663F;
  --amber-d:#A9512F;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",sans-serif;
  font-size:19px;line-height:1.85;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--navy);text-decoration:none}
a:hover{color:var(--amber)}
.wrap{max-width:1280px;margin:0 auto;padding:0 32px}
section[id],#download{scroll-margin-top:104px}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}

/* 顶栏 */
.site-head{position:sticky;top:0;z-index:30;background:rgba(251,247,242,.94);backdrop-filter:blur(10px)}
.nav{display:flex;align-items:center;justify-content:space-between;height:88px}
.brand{font-size:23px;font-weight:600;color:var(--navy);letter-spacing:.05em;white-space:nowrap}
.brand:hover{color:var(--navy)}
.nav-links{display:flex;align-items:center;gap:40px;list-style:none;margin:0;padding:0}
.nav-links a{font-size:19px;color:var(--muted)}
.nav-links a:hover{color:var(--ink)}
.nav-chk{position:absolute;left:-9999px}
.nav-burger{display:none;width:44px;height:40px;padding:0;border:0;background:transparent;cursor:pointer}
.nav-burger span{display:block;height:2px;background:var(--ink);margin:7px 10px;border-radius:2px}

/* 开场 */
.hero{padding:128px 0 112px;text-align:center;max-width:1000px;margin:0 auto}
.hero-tag{font-size:17px;letter-spacing:.34em;color:var(--amber);margin:0 0 28px}
.hero h1{font-size:clamp(42px,5.4vw,74px);line-height:1.22;font-weight:600;color:var(--navy);
  margin:0 0 28px;letter-spacing:-.005em}
.hero-lead{font-size:22px;color:var(--muted);margin:0 auto;max-width:720px}
.btn{display:inline-block;background:var(--amber);color:#fff;padding:18px 42px;border-radius:999px;
  font-size:19px;font-weight:500}
.btn:hover{background:var(--amber-d);color:#fff}

/* 四层 */
.layer{padding:112px 0}
.alt{background:var(--paper2)}
.layer-in{display:grid;grid-template-columns:.64fr 1.36fr;gap:104px;align-items:center}
.layer-in.rev .txt{order:2}
.layer-in.rev .vis{order:1}
.kicker{font-size:17px;letter-spacing:.3em;color:var(--amber);margin:0 0 10px;font-weight:600}
.layer h2{font-size:clamp(52px,6vw,82px);line-height:1.05;font-weight:700;color:var(--navy);
  margin:0;letter-spacing:.06em}
#days h2{font-size:clamp(46px,5.2vw,70px);letter-spacing:.02em}
.rule{width:56px;height:3px;background:var(--amber);margin:26px 0 28px}
.layer .sub{font-size:clamp(22px,2.3vw,30px);line-height:1.5;color:var(--navy);font-weight:600;margin:0 0 24px}
.layer .txt p{font-size:20px;line-height:1.95;color:#4C4A46;margin:0 0 18px}
.layer .txt p:last-child{margin-bottom:0}
.note{border-left:3px solid var(--amber);padding-left:18px;color:#5A5650!important;font-size:19px!important}

/* 三图 M 形错落 */
.mstack{display:flex;gap:14px;align-items:flex-start;justify-content:center}
.mstack figure{margin:0;flex:0 0 auto;width:calc((100% - 28px)/3);
  display:flex;flex-direction:column;align-items:center}
.mstack figure img{width:100%;display:block;border-radius:20px;
  box-shadow:0 18px 40px rgba(31,58,95,.18)}
.mstack figcaption{font-size:18px;letter-spacing:.08em;color:var(--muted);text-align:center;
  padding:16px 0 0;background:none}
.mstack .m1{margin-top:0}
.mstack .m2{margin-top:132px}
.mstack .m3{margin-top:26px}

/* 下载栏 */
.dl{padding:96px 0 104px;border-top:1px solid var(--line)}
.dl-h{font-size:clamp(34px,3.4vw,46px);line-height:1.2;font-weight:700;color:var(--navy);margin:0 0 20px;letter-spacing:.02em}
.dl-p{font-size:20px;line-height:1.9;color:#4C4A46;margin:0 0 10px;max-width:760px}
.dl-note{font-size:16px;color:var(--muted);margin:0}
.foot-pending{color:var(--muted)}

/* 效果图说明 */
.fig-note{font-size:17px;color:var(--muted);margin:16px 0 0;letter-spacing:.02em;text-wrap:balance}

/* 闹钟卡 */
.cards{display:flex;flex-direction:column;gap:18px}
.cards img{width:100%;border-radius:18px;box-shadow:0 16px 36px rgba(31,58,95,.12)}

/* 共享 */
.sharevis{position:relative;padding-right:0}
.sharevis > img{width:57%;border-radius:22px;box-shadow:0 20px 44px rgba(31,58,95,.14)}
.codecard{position:absolute;right:0;bottom:4%;width:45%;background:#fff;border-radius:20px;
  padding:26px 22px;text-align:center;box-shadow:0 20px 44px rgba(31,58,95,.16)}
.cc-t{margin:0;font-size:17px;letter-spacing:.2em;color:var(--muted)}
.cc-n{margin:12px 0 8px;font-size:32px;font-weight:700;color:var(--navy);letter-spacing:.1em}
.cc-d{margin:0;font-size:17px;color:var(--muted)}

/* 日子卡 */
.daycard{background:#fff;border-radius:24px;padding:16px 30px;box-shadow:0 18px 40px rgba(31,58,95,.10)}
.dayrow{display:flex;align-items:baseline;justify-content:space-between;gap:24px;padding:24px 0;
  border-bottom:1px solid var(--line)}
.dayrow:last-child{border-bottom:0}
.dayrow span{font-size:20px;color:var(--ink)}
.dayrow em{font-style:normal;font-size:23px;font-weight:600;color:var(--navy);white-space:nowrap}
.dayrow em.down{color:#C0392B}
.dayrow em.up{color:#17665A}

/* 页脚 */
.site-foot{background:#F0E8DC;padding:64px 0 56px;text-align:center;font-size:16px;color:var(--muted)}
.site-foot a{color:var(--muted);text-decoration:underline;text-underline-offset:4px}
.site-foot a:hover{color:var(--ink)}
.foot-l1{margin:0 0 12px}
.foot-l1 span{margin:0 12px}
.foot-l2{margin:0}
.foot-l2 a{margin:0 10px}

/* 内页 */
.doc{padding:96px 0 48px;max-width:840px;margin:0 auto}
.doc h1{font-size:clamp(30px,3.2vw,42px);color:var(--navy);margin:0 0 14px;font-weight:600}
.doc .ver{color:var(--muted);font-size:16px;margin:0 0 10px}
.doc .back{font-size:16px;margin:0 0 44px}
.doc h2{font-size:26px;color:var(--navy);margin:48px 0 16px;font-weight:600}
.doc h3{font-size:20px;color:var(--navy);margin:30px 0 10px;font-weight:600}
.doc h4{font-size:18px;color:var(--navy);margin:24px 0 8px}
.doc p{margin:0 0 16px}
.doc ul,.doc ol{margin:0 0 20px;padding-left:26px}
.doc li{margin:0 0 8px}
.doc table{width:100%;border-collapse:collapse;margin:0 0 24px;font-size:17px;table-layout:auto}
.doc td,.doc th{word-break:break-word}
.doc td:nth-child(2){min-width:6.2em}
.doc td:first-child{min-width:8.2em}
.doc th,.doc td{border:1px solid var(--line);padding:12px 14px;text-align:left;vertical-align:top}
.doc th{background:#F4EEE6;color:var(--navy);font-weight:600;white-space:nowrap}
.doc blockquote{margin:0 0 20px;padding:16px 22px;background:#F4EEE6;border-left:3px solid var(--amber);
  color:#4C4A46;font-size:18px}
.doc blockquote p:last-child{margin-bottom:0}
.doc hr{border:0;border-top:1px solid var(--line);margin:34px 0}
.doc code{background:#F4EEE6;padding:2px 6px;border-radius:4px;font-size:16px}
.doc pre{background:#F4EEE6;padding:18px;border-radius:12px;overflow:auto}

/* 使用说明 */
.steps{list-style:none;margin:44px 0 0;padding:0;counter-reset:s}
.steps>li{position:relative;padding:0 0 44px 72px;counter-increment:s}
.steps>li::before{content:counter(s);position:absolute;left:0;top:0;width:46px;height:46px;border-radius:50%;
  background:#F3E4D3;color:var(--amber-d);font-weight:700;font-size:19px;
  display:flex;align-items:center;justify-content:center}
.steps h3{margin:4px 0 10px;font-size:25px;color:var(--navy)}
.steps p{margin:0;color:#4C4A46}
.hint{font-size:17px;color:var(--muted)}

/* 404 */
.nf{padding:160px 0 180px;text-align:center}
.nf h1{font-size:clamp(32px,3.8vw,48px);color:var(--navy);margin:0 0 16px;font-weight:600}
.nf p{color:var(--muted);margin:0 0 36px}

@media (max-width:1040px){
  .nav-links{gap:26px}
  .nav-links a{font-size:17px}
  .layer-in{gap:64px}
  .fig-note{font-size:15px}
}
@media (max-width:900px){
  .layer-in{grid-template-columns:1fr;gap:52px}
  .layer-in.rev .txt,.layer-in.rev .vis{order:0}
  .layer{padding:76px 0}
  .hero{padding:76px 0 64px}
  .mstack{gap:12px}
  .mstack .m2{margin-top:34px}
  .sharevis > img{width:70%}
  .codecard{width:52%;padding:20px 16px}
  .cc-n{font-size:26px}
}
@media (max-width:768px){
  body{font-size:18px}
  .wrap{padding:0 22px}
  .nav{height:70px}
  .brand{font-size:21px}
  .nav-burger{display:block}
  .nav-links{display:none;position:absolute;left:0;right:0;top:70px;background:var(--paper);
    flex-direction:column;align-items:stretch;gap:0;padding:8px 22px 18px;border-bottom:1px solid var(--line)}
  .nav-links li{border-top:1px solid var(--line)}
  .nav-links a{display:block;padding:16px 0;font-size:19px}
  .nav-chk:checked ~ .nav-links{display:flex}
  .hero h1{font-size:36px}
  .hero-lead{font-size:19px}
  .btn{padding:16px 32px;font-size:18px}
  .layer{padding:60px 0}
  .layer h2{font-size:52px}
  .layer .sub{font-size:23px}
  .layer .txt p{font-size:18px;line-height:1.9}
  .note{font-size:17px!important}
  .mstack{flex-wrap:nowrap;overflow-x:auto;justify-content:flex-start;padding-bottom:10px}
  .mstack figure{width:46%;flex:0 0 46%}
  .mstack .m2{margin-top:24px}
  .sharevis > img{width:76%}
  .codecard{width:56%;bottom:2%}
  .cc-n{font-size:22px}
  .dayrow span{font-size:18px}
  .dayrow em{font-size:20px}
  .site-foot{font-size:15px}
  .foot-l1 span{display:inline-block;margin:0 8px 6px}
  .doc{padding:64px 0 28px}
  .doc table{display:block;overflow-x:auto;white-space:nowrap}
  .steps>li{padding-left:58px;padding-bottom:34px}
  .steps h3{font-size:21px}
}