/* 动森圈圈官网 / 下载页公用样式：奶油底 + 横向波纹 + 手账配色，和 App 一致 */
@font-face{
  font-family:"ACRound";
  src:url("./round.woff2") format("woff2");
  font-weight:800;font-display:swap;
}
:root{
  color-scheme:light dark;
  --bg:#FBF5E1;
  --wave:#F3E3B0;
  --card:#FFFDF6;
  --ink:#5E4B36;
  --ink2:#8A7660;
  --ink3:#B2A28A;
  --line:#EADFC0;
  --green:#168A5C;
  --on-green:#fff;
  --green-soft:#E3F1D8;
  --shadow:0 10px 28px rgba(94,75,54,.12);
  --phone:#2B2520;
}
@media (prefers-color-scheme:dark){
  :root{
    --bg:#1C1A14;
    --wave:#26231A;
    --card:#25221A;
    --ink:#F1E8D3;
    --ink2:#C2B49A;
    --ink3:#8E8370;
    --line:#37321F;
    --green:#5FCB98;
    --on-green:#10261B;
    --green-soft:#223024;
    --shadow:none;
    --phone:#0B0A07;
  }
}
*{box-sizing:border-box;}
html,body{margin:0;}
body{
  background:var(--bg);color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Segoe UI",sans-serif;
  line-height:1.75;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
a{color:var(--green);text-decoration:none;}
a:hover{text-decoration:underline;}
img{max-width:100%;display:block;}
.rd{font-family:"ACRound","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;font-weight:800;letter-spacing:.5px;}

.wrap{max-width:1040px;margin:0 auto;padding:0 20px;}

/* ---------- 顶栏 ---------- */
.top{display:flex;align-items:center;justify-content:space-between;padding:18px 0;position:relative;z-index:3;}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);font-size:18px;}
.brand img{width:34px;height:34px;border-radius:8px;}
.brand:hover{text-decoration:none;}
.top nav a{margin-left:20px;font-size:14.5px;color:var(--ink2);}
.top nav a:hover{color:var(--ink);text-decoration:none;}

/* ---------- 首屏 ---------- */
.hero{position:relative;overflow:hidden;padding-bottom:12px;}
.waves{position:absolute;left:0;right:0;top:0;height:560px;z-index:0;pointer-events:none;}
.waves svg{width:100%;height:100%;display:block;}
.waves path{fill:var(--wave);fill-opacity:.6;}
.hero .wrap{position:relative;z-index:1;}
.hero-body{text-align:center;padding:30px 0 0;position:relative;}
.app-icon{width:116px;height:116px;border-radius:26px;margin:0 auto 20px;box-shadow:var(--shadow);}
.hero h1{margin:0;font-size:44px;line-height:1.25;}
.tagline{margin:10px 0 0;font-size:19px;color:var(--ink);}
.lead{margin:8px auto 0;max-width:520px;color:var(--ink2);font-size:15.5px;}

.cta{margin-top:26px;display:flex;flex-wrap:wrap;justify-content:center;gap:12px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  padding:13px 28px;border-radius:999px;border:2px solid var(--green);
  background:var(--green);color:var(--on-green);
  font-family:inherit;font-size:16px;font-weight:700;cursor:pointer;
  transition:transform .15s ease;
}
.btn:hover{transform:translateY(-2px);text-decoration:none;}
.btn.ghost{background:transparent;color:var(--green);}
.hint{margin:14px auto 0;max-width:460px;color:var(--ink2);font-size:13.5px;}
.hint b{color:var(--ink);}

/* 散落的贴纸 */
.stk{position:absolute;pointer-events:none;filter:drop-shadow(0 6px 8px rgba(94,75,54,.18));}
.stk.a{left:3%;top:96px;width:96px;transform:rotate(-8deg);}
.stk.b{left:14%;top:290px;width:92px;transform:rotate(7deg);}
.stk.c{right:3%;top:92px;width:120px;transform:rotate(9deg);}
.stk.d{right:14%;top:296px;width:92px;transform:rotate(-6deg);}
@media (max-width:860px){
  .stk.b,.stk.d{display:none;}
  .stk.a{left:-10px;top:150px;width:64px;}
  .stk.c{right:-12px;top:150px;width:72px;}
  .hero h1{font-size:36px;}
}

/* ---------- 手机框 ---------- */
.phones{display:flex;justify-content:center;align-items:flex-end;gap:clamp(8px,2.2vw,26px);margin-top:42px;}
.phone{
  border:6px solid var(--phone);border-radius:36px;overflow:hidden;background:var(--bg);
  box-shadow:var(--shadow);width:clamp(104px,22vw,236px);
}
.phone.mid{width:clamp(124px,26vw,280px);margin-bottom:0;}
.phone img{width:100%;display:block;}
.phones .phone:not(.mid){transform:translateY(34px);}
.fade-bottom{position:relative;height:90px;margin-top:-90px;z-index:2;background:linear-gradient(180deg,transparent,var(--bg));}

/* ---------- 功能 ---------- */
section.block{padding:62px 0 0;}
.sec-t{text-align:center;margin:0 0 6px;font-size:28px;}
.sec-s{text-align:center;margin:0 auto 30px;color:var(--ink2);font-size:15px;max-width:520px;}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;}
@media (max-width:860px){.grid{grid-template-columns:repeat(2,1fr);}}
@media (max-width:560px){.grid{grid-template-columns:1fr;}}
.card{
  background:var(--card);border:1.5px solid var(--line);border-radius:22px;padding:22px 22px 20px;
  box-shadow:var(--shadow);
}
.card img{width:58px;height:58px;object-fit:contain;margin-bottom:10px;}
.card h3{margin:0 0 4px;font-size:18px;}
.card p{margin:0;color:var(--ink2);font-size:14.5px;line-height:1.7;}
.tags{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:24px;}
.tags span{padding:6px 16px;border-radius:999px;background:var(--green-soft);color:var(--green);font-size:14px;font-weight:600;}

/* 横向截图（下载页） */
.shots{display:flex;gap:16px;overflow-x:auto;padding:6px 20px 16px;margin:0 -20px;scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;}
.shots::-webkit-scrollbar{display:none;}
.shots .phone{flex:0 0 auto;width:188px;scroll-snap-align:center;}

/* 说明条 */
.note{
  margin-top:26px;text-align:center;padding:22px 24px;border-radius:22px;
  background:var(--card);border:1.5px dashed var(--line);
}
.note h3{margin:0 0 6px;font-size:18px;}
.note p{margin:0 auto;max-width:480px;color:var(--ink2);font-size:14.5px;}
.note .name{display:inline-block;margin-top:12px;padding:7px 18px;border-radius:12px;background:var(--green-soft);color:var(--green);font-weight:700;}

/* ---------- 页脚 ---------- */
footer{margin-top:64px;padding:30px 0 56px;border-top:1.5px solid var(--line);text-align:center;color:var(--ink2);font-size:13px;line-height:2;}
footer .links a{margin:0 8px;white-space:nowrap;}
footer .disc{display:block;max-width:520px;margin:12px auto;font-size:12px;line-height:1.8;color:var(--ink3);}

/* ---------- 下载页专用 ---------- */
.dl .hero-body{padding-top:48px;}
#toast{
  position:fixed;left:50%;bottom:34px;transform:translate(-50%,14px);
  background:rgba(60,48,34,.94);color:#fff;padding:11px 22px;border-radius:12px;
  font-size:14.5px;opacity:0;pointer-events:none;transition:opacity .22s ease,transform .22s ease;z-index:120;
}
#toast.show{opacity:1;transform:translate(-50%,0);}
#wxTip{
  display:none;position:fixed;inset:0;z-index:99;background:rgba(40,30,18,.74);padding:14px 18px;color:#fff;
}
#wxTip .arrow{text-align:right;font-size:40px;line-height:1;padding:0 10px 4px 0;}
#wxTip .msg{max-width:340px;margin:0 0 0 auto;text-align:right;font-size:16px;font-weight:600;}
#wxTip .msg span{display:block;font-size:13.5px;font-weight:400;opacity:.85;margin-top:8px;line-height:1.7;}
#wxTip .close{display:block;margin:26px 0 0 auto;padding:8px 18px;border:1px solid rgba(255,255,255,.5);background:transparent;color:#fff;border-radius:999px;font-family:inherit;font-size:14px;cursor:pointer;}

/* ---------- 工作室首页（Sand Universe） ---------- */
.studio .hero-body{padding:54px 0 8px;}
.studio .en{margin:0 0 10px;font-size:14px;letter-spacing:4px;text-transform:uppercase;color:var(--ink2);font-weight:700;}
.studio h1{font-size:60px;letter-spacing:6px;}
.studio .tagline{margin-top:14px;font-size:18px;}
.studio .lead{max-width:560px;}
.grains{position:absolute;inset:0;z-index:0;pointer-events:none;}
.grains i{position:absolute;border-radius:50%;background:var(--ink3);opacity:.5;}
.worlds{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
@media (max-width:760px){.worlds{grid-template-columns:1fr;}.studio h1{font-size:44px;letter-spacing:4px;}}
.world{position:relative;overflow:hidden;background:var(--card);border:1.5px solid var(--line);border-radius:26px;padding:28px 28px 26px;box-shadow:var(--shadow);}
.world .w-head{display:flex;align-items:center;gap:16px;margin-bottom:14px;}
.world .w-icon{width:68px;height:68px;border-radius:17px;flex:0 0 auto;object-fit:cover;}
.world .w-icon.soft{background:var(--green-soft);padding:10px;border-radius:17px;}
.world h2{margin:0;font-size:26px;line-height:1.3;}
.world .chip{display:inline-block;margin-top:4px;padding:2px 12px;border-radius:999px;background:var(--green-soft);color:var(--green);font-size:12.5px;font-weight:700;}
.world p{margin:0 0 18px;color:var(--ink2);font-size:15px;line-height:1.75;}
.world .btns{display:flex;flex-wrap:wrap;gap:10px;align-items:center;}
.btn.sm{padding:9px 20px;font-size:14.5px;}
.world .more{font-size:14.5px;margin-left:4px;}
.world .corner{position:absolute;right:-6px;top:-6px;width:92px;opacity:.95;transform:rotate(10deg);pointer-events:none;}
.idea{margin-top:46px;text-align:center;color:var(--ink2);font-size:15px;}