/* ============================================================
 * DS桌宠 · 官网样式
 *   深色底 + 滚动渐入渐出（.reveal → .is-in / .is-out，逻辑在 site.js）
 *   试玩区底色 #0f1620 与 pet/pet.css 保持一致，看不出接缝
 * ============================================================ */

:root{
  --bg:#080c12;
  --surface:#0f1620;          /* ★ 必须和 pet/pet.css 的底色一致 */
  --surface-2:#141d2a;
  --line:rgba(255,255,255,.08);
  --line-2:rgba(255,255,255,.14);
  --text:#e8eef7;
  --dim:#8a9bb0;
  --dim-2:#63758c;
  --accent:#4ea8f5;
  --accent-2:#7fd3ff;
  --accent-deep:#2e7dd1;
  --radius:18px;
  --shadow:0 18px 50px rgba(0,0,0,.45);
}

*{margin:0;padding:0;box-sizing:border-box}

html{scroll-behavior:smooth;overflow-x:hidden}   /* 兜底：任何情况下都不让整页被撑宽 */
section[id],header[id]{scroll-margin-top:86px}   /* 别被吸顶导航盖住 */
body{
  padding-top:56px;              /* 固定页眉占的高度 */
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  line-height:1.75;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

/* 背景光晕 */
.bg-glow{
  position:fixed; inset:0; pointer-events:none; z-index:0;
  background:
    linear-gradient(180deg, rgba(8,12,18,.30) 0%, rgba(8,12,18,.66) 45%, rgba(8,12,18,.90) 100%),
    radial-gradient(680px 420px at 12% -4%, rgba(78,168,245,.14), transparent 70%),
    radial-gradient(760px 520px at 92% 8%, rgba(127,211,255,.08), transparent 70%),
    url("img/bg-p1.webp") center center / cover no-repeat;
}
main,header,footer,nav{position:relative;z-index:1}

a{color:var(--accent-2);text-decoration:none}
a:hover{text-decoration:underline}

.wrap{max-width:1120px;margin:0 auto;padding:0 24px}
.wrap.narrow{max-width:820px}
.center{text-align:center}
.dim{color:var(--dim-2)}

/* ---------------- 导航 ---------------- */
.nav{
  /* ★ 原来是 sticky，但 html/body 的 overflow-x:hidden 会把它废掉 →
     改成真正固定（下面的 body padding-top 用来补高度） */
  position:fixed; left:0; right:0; top:0; z-index:50;
  display:flex; align-items:center; gap:22px;
  padding:12px max(24px, calc((100% - 1120px)/2 + 24px));
  background:rgba(8,12,18,.72);
  backdrop-filter:saturate(160%) blur(14px);
  -webkit-backdrop-filter:saturate(160%) blur(14px);
  border-bottom:1px solid transparent;
  transition:border-color .3s, background .3s;
}
.nav.is-scrolled{border-bottom-color:var(--line); background:rgba(8,12,18,.9)}
.nav-logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:17px;color:var(--text)}
.nav-logo:hover{text-decoration:none}
.nav-logo img{width:30px;height:30px;border-radius:9px}
.nav-links{display:flex;gap:20px;margin-left:auto;font-size:14.5px}
.nav-links a{color:var(--dim)}
.nav-links a:hover{color:var(--text);text-decoration:none}
.nav .btn{margin-left:auto}
.nav-links + .btn{margin-left:0}

/* ---------------- 按钮 ---------------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:999px;
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:transform .18s, box-shadow .18s, background .18s, border-color .18s;
  white-space:nowrap;
}
.btn:hover{text-decoration:none;transform:translateY(-2px)}
.btn-primary{
  background:linear-gradient(180deg,var(--accent-2),var(--accent-deep));
  color:#06121f; box-shadow:0 10px 26px rgba(46,125,209,.34);
}
.btn-primary:hover{box-shadow:0 14px 34px rgba(46,125,209,.46)}
.btn-ghost{
  background:rgba(255,255,255,.05); color:var(--text); border-color:var(--line-2);
}
.btn-ghost:hover{background:rgba(255,255,255,.1)}
.btn-sm{padding:10px 18px;font-size:14px}
.btn.is-disabled{opacity:.45;pointer-events:none}

/* ---------------- 首屏 ---------------- */
.hero{padding:78px 0 40px;position:relative}
.hero-inner{text-align:center;display:flex;flex-direction:column;align-items:center}
.badge{
  display:inline-block;padding:6px 14px;border-radius:999px;
  font-size:13px;color:var(--accent-2);
  background:rgba(78,168,245,.1);border:1px solid rgba(78,168,245,.26);
}
.hero h1{
  font-size:clamp(44px,7vw,80px);line-height:1.05;letter-spacing:-.02em;
  margin:18px 0 14px;
  background:linear-gradient(180deg,#ffffff,#9dc8f0);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{font-size:clamp(15px,1.6vw,18px);color:var(--dim);max-width:640px}
.hero-sub b{color:var(--accent-2)}
.hero-btns{display:flex;gap:12px;flex-wrap:wrap;justify-content:center;margin-top:28px}

/* ---------------- 试玩区 ---------------- */
.playground{
  margin-top:52px;border-radius:var(--radius);overflow:hidden;
  background:var(--surface);                     /* ★ 同色，看不出 iframe 边界 */
  border:1px solid var(--line);box-shadow:var(--shadow);
}
.playground-bar{
  display:flex;align-items:center;gap:7px;
  padding:11px 16px;border-bottom:1px solid var(--line);
  font-size:12.5px;color:var(--dim-2);background:rgba(255,255,255,.02);
}
.playground-bar span{margin-left:8px;margin-right:auto}
.bar-btn{
  padding:6px 14px;border-radius:999px;font-size:12.5px;font-family:inherit;cursor:pointer;
  color:var(--accent-2);background:rgba(78,168,245,.12);
  border:1px solid rgba(78,168,245,.3);transition:background .2s;
}
.bar-btn:hover{background:rgba(78,168,245,.22)}
.playground.is-live .bar-btn{color:#ffb84d;background:rgba(255,184,77,.12);border-color:rgba(255,184,77,.35)}
.dot{width:10px;height:10px;border-radius:50%;display:inline-block}
.d1{background:#ff5f57}.d2{background:#febc2e}.d3{background:#28c840}
.playground-frame{
  display:block;width:100%;height:470px;border:0;background:var(--surface);
  /* ★ 默认不接管鼠标/手指：不然滚轮和滑动会被她抢走，页面滚不动 */
  pointer-events:none;
}
/* 点了「开始试玩」才让她接管交互 */
.playground.is-live .playground-frame{pointer-events:auto}
.playground-note{
  padding:12px 16px;font-size:13px;color:var(--dim-2);
  border-top:1px solid var(--line);text-align:center;background:rgba(255,255,255,.02);
}

/* ---------------- 通用段落 ---------------- */
.sec{padding:96px 0}
.kicker{font-size:13.5px;letter-spacing:.14em;color:var(--accent);font-weight:600;margin-bottom:10px}
.sec h2{font-size:clamp(26px,3.4vw,38px);line-height:1.25;letter-spacing:-.01em;margin-bottom:18px}
.lead{font-size:16.5px;color:var(--dim);max-width:760px}
.lead b{color:var(--text)}
.after{margin-top:22px;font-size:15px;color:var(--dim-2)}
.after b{color:var(--accent-2)}

.row{display:grid;grid-template-columns:1.05fr .95fr;gap:64px;align-items:center}
.row.reverse .col-text{order:2}
.row.reverse .col-media{order:1}

.ticks{list-style:none;margin-top:22px;display:flex;flex-direction:column;gap:11px}
.ticks li{position:relative;padding-left:26px;color:var(--dim);font-size:15.5px}
.ticks li::before{
  content:"";position:absolute;left:2px;top:.62em;width:9px;height:9px;border-radius:50%;
  background:linear-gradient(135deg,var(--accent-2),var(--accent-deep));
  box-shadow:0 0 12px rgba(78,168,245,.7);
}
.ticks li b{color:var(--text)}

/* 手机截图 */
.phone{margin:0 auto;max-width:290px;border-radius:26px;overflow:hidden;
  border:1px solid var(--line-2);box-shadow:var(--shadow);background:#000}
.phone img{display:block;width:100%;height:auto}
.phone figcaption{padding:11px 14px;font-size:12.5px;color:var(--dim-2);text-align:center;
  background:rgba(255,255,255,.03);border-top:1px solid var(--line)}

/* ★ 1.3 功能海报：图片自带页眉/页脚/藤蔓边框，所以这里不再加框，只给圆角和投影 */
.poster{margin:0 auto;max-width:440px}
.poster img{display:block;width:100%;height:auto;border-radius:24px;
  box-shadow:0 22px 60px rgba(0,0,0,.5)}

/* 数字条 */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:38px}
.stat{padding:20px;border-radius:var(--radius);background:var(--surface);
  border:1px solid var(--line);text-align:center}
.stat b{display:block;font-size:32px;line-height:1.2;
  background:linear-gradient(180deg,#fff,#8fc6f2);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat span{font-size:13px;color:var(--dim-2)}

/* 卡片 */
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:34px}
.card{padding:26px 24px;border-radius:var(--radius);background:var(--surface);
  border:1px solid var(--line);transition:transform .25s,border-color .25s}
.card:hover{transform:translateY(-4px);border-color:var(--line-2)}
.card h3{font-size:18px;margin-bottom:10px}
.card p{font-size:14.5px;color:var(--dim)}
.tag{display:inline-block;margin-top:14px;padding:4px 11px;border-radius:999px;
  font-size:12px;color:var(--accent-2);background:rgba(78,168,245,.1);border:1px solid rgba(78,168,245,.24)}

.highlight{margin-top:26px;padding:28px 26px;border-radius:var(--radius);
  background:linear-gradient(180deg,rgba(78,168,245,.1),rgba(78,168,245,.02));
  border:1px solid rgba(78,168,245,.24)}
.highlight h3{font-size:19px;margin-bottom:10px}
.highlight p{color:var(--dim);font-size:15.5px}
.highlight b{color:var(--accent-2)}

/* 玩法表格 */
.table{margin-top:32px;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.tr{display:grid;grid-template-columns:150px 1fr 1fr;gap:18px;padding:16px 22px;
  border-top:1px solid var(--line);font-size:15px;align-items:center}
.tr:first-child{border-top:0}
.tr span{color:var(--dim)}
.tr span:first-child{color:var(--text);font-weight:600}
.tr.th{background:rgba(255,255,255,.035);font-size:13px;letter-spacing:.05em}
.tr.th span,.tr.th span:first-child{color:var(--dim-2);font-weight:600}
.tr:nth-child(even){background:rgba(255,255,255,.012)}

/* 下载 */
.download{padding-bottom:110px}
.dl-grid{margin-top:38px}
.dl-card{text-align:center;display:flex;flex-direction:column;align-items:center;gap:12px}
.dl-card h3{font-size:20px;margin:0}
.dl-card p{flex:1}
.dl-card .btn{width:100%}
.dl-icon{font-size:38px;line-height:1}
.tiny{font-size:12.5px;color:var(--dim-2)}
.tiny-link{color:var(--dim);text-decoration:underline;text-decoration-color:rgba(255,255,255,.2)}
.dl-card .tiny{flex:none}

/* 更新日志 */
.log{margin-top:34px;position:relative}
.log::before{content:"";position:absolute;left:5px;top:14px;bottom:14px;width:2px;
  background:linear-gradient(180deg,rgba(78,168,245,.5),rgba(78,168,245,.04))}
.log-item{position:relative;padding:0 0 32px 34px}
.log-item:last-child{padding-bottom:0}
.log-item::before{content:"";position:absolute;left:0;top:7px;width:12px;height:12px;border-radius:50%;
  background:var(--accent);box-shadow:0 0 0 4px rgba(78,168,245,.16)}
.log-ver{display:flex;align-items:baseline;gap:12px;margin-bottom:10px;flex-wrap:wrap}
.log-ver b{font-size:22px;letter-spacing:-.01em}
.log-ver span{font-size:13px;color:var(--dim-2)}
.log-item ul{list-style:none;display:flex;flex-direction:column;gap:8px}
.log-item li{position:relative;padding-left:18px;font-size:15px;color:var(--dim);line-height:1.75}
.log-item li::before{content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;border-radius:50%;background:var(--dim-2)}
.log-item li b{color:var(--accent-2);font-weight:600}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:11.5px;color:var(--dim-2)}

/* FAQ */.faq{margin-top:14px;border:1px solid var(--line);border-radius:14px;
  background:var(--surface);overflow:hidden}
.faq summary{padding:17px 22px;cursor:pointer;font-weight:600;font-size:16px;list-style:none;
  display:flex;justify-content:space-between;align-items:center;gap:16px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"＋";color:var(--accent);font-weight:400;transition:transform .25s}
.faq[open] summary::after{transform:rotate(45deg)}
.faq p{padding:0 22px 19px;color:var(--dim);font-size:15px}

/* 页脚 */
.foot{margin-top:40px;border-top:1px solid var(--line);padding:46px 0 60px;background:rgba(255,255,255,.012)}
.foot-top{display:flex;justify-content:space-between;gap:28px;flex-wrap:wrap;align-items:center}
.foot-brand{display:flex;align-items:center;gap:12px}
.foot-brand img{width:42px;height:42px;border-radius:12px}
.foot-brand b{display:block;font-size:16px}
.foot-brand span{font-size:13px;color:var(--dim-2)}
.foot-links{display:flex;gap:20px;font-size:14px;flex-wrap:wrap}
.foot-links a{color:var(--dim)}
.foot-note{margin-top:30px;padding-top:24px;border-top:1px solid var(--line);
  font-size:13px;color:var(--dim-2);line-height:1.9}
.foot-note b{color:var(--dim)}
.foot-note .copy{margin-top:12px}

/* ---------------- 滚动渐入渐出 ---------------- */
.reveal{
  opacity:0;transform:translateY(38px);
  transition:opacity .78s cubic-bezier(.22,.68,.32,1),
             transform .78s cubic-bezier(.22,.68,.32,1);
  transition-delay:var(--d,0s);
  will-change:opacity,transform;
}
.reveal.is-in{opacity:1;transform:none}
.reveal.is-out{opacity:0;transform:translateY(-38px)}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1 !important;transform:none !important;transition:none !important}
}

/* ---------------- 响应式 ---------------- */
@media (max-width:960px){
  /* ★ 手机上导航改成：只留图标 + 可以左右滑的链接行，绝不撑破页面 */
  .nav{gap:10px;padding:10px 14px}
  .nav-logo{flex:none}
  .nav-logo span{font-size:15px}
  .nav-links{
    display:flex;flex:1 1 auto;min-width:0;margin-left:0;
    gap:14px;font-size:13.5px;
    overflow-x:auto;white-space:nowrap;
    -webkit-overflow-scrolling:touch;scrollbar-width:none;
  }
  .nav-links::-webkit-scrollbar{display:none}
  .nav-links a{padding:4px 0}
  .nav .btn,.nav-links + .btn{flex:none;margin-left:10px;padding:9px 14px;font-size:13.5px}
  .row,.row.reverse{grid-template-columns:1fr;gap:38px}
  .row.reverse .col-text{order:1}
  .row.reverse .col-media{order:2}
  .grid3{grid-template-columns:1fr}
  .stats{grid-template-columns:repeat(2,1fr)}
  .sec{padding:70px 0}
  .playground-frame{height:360px}
}
@media (max-width:600px){
  body{font-size:15.5px; padding-top:50px}
  /* 手机：图标 + 链接行 + 不放下载按钮（首屏就是大按钮，不重复） */
  .nav{padding:9px 12px;gap:8px}
  .nav-logo img{width:26px;height:26px;border-radius:8px}
  .nav-logo span{display:inline;font-size:15px;letter-spacing:0}
  .nav-links{gap:13px;font-size:13px}
  .nav .btn,.nav-links + .btn{display:none}
  /* 首屏三个按钮竖着排，绝不被挤出去 */
  .hero-btns{flex-direction:column;align-items:stretch;width:100%}
  .hero-btns .btn{width:100%}
  .playground-bar span{display:none}
  /* 手机上的长文本瘦身，别挤爆一行 */
  .badge{font-size:12px;padding:5px 11px;max-width:100%;line-height:1.5;white-space:normal}
  .hero-sub{font-size:14.5px}
  .sec h2{font-size:24px}
  .lead,.ticks li{font-size:15px}
  .stat b{font-size:26px}
  .stats{gap:10px}
  .card{padding:20px 18px}
  .playground-note{font-size:12px;padding:10px 12px}
  .foot-note{font-size:12.5px}
  .hero{padding-top:52px}
  .hero-btns{width:100%}
  .hero-btns .btn{flex:1 1 auto}
  .playground-frame{height:300px}
  .tr{grid-template-columns:1fr;gap:6px;padding:14px 18px}
  .tr.th{display:none}
  .tr span:first-child{font-size:15.5px}
  .foot-top{flex-direction:column;align-items:flex-start}
}

/* ============ 2.22 更新：界面预览 ============ */
.shots{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:16px;margin-top:34px}
.shots figure{margin:0;border-radius:14px;overflow:hidden;border:1px solid var(--line);background:var(--surface)}
.shots img{display:block;width:100%;height:auto}
.shots figcaption{font-size:13px;color:var(--dim);text-align:center;padding:10px 6px;line-height:1.45}
@media(max-width:900px){.shots{grid-template-columns:repeat(2,1fr);gap:12px}}
@media(max-width:520px){.shots{grid-template-columns:repeat(2,1fr);gap:10px}}

/* ============ 功能展示（错落图文） ============ */
.feature-list{display:flex;flex-direction:column;gap:84px;margin-top:60px}
.feature-row{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.3fr);gap:52px;align-items:center}
.feature-row:nth-child(even){grid-template-columns:minmax(0,1.3fr) minmax(0,.9fr)}
.feature-row:nth-child(even) figure{order:2}
.feature-row:nth-child(1){margin-right:8%}
.feature-row:nth-child(2){margin-left:10%}
.feature-row:nth-child(3){margin-right:5%}
.feature-row:nth-child(4){margin-left:7%}
.feature-row:nth-child(5){margin-right:9%}
.feature-row figure{margin:0;border-radius:18px;overflow:hidden;border:1px solid var(--line);
  box-shadow:var(--shadow);background:var(--surface);max-width:340px}
.feature-row:nth-child(even) figure{margin-left:auto}
.feature-row img{display:block;width:100%;height:auto;transition:transform .5s}
.feature-row figure:hover img{transform:scale(1.03)}
.feature-text h3{font-size:clamp(21px,2.6vw,28px);line-height:1.3;margin-bottom:14px;letter-spacing:-.01em}
.feature-text p{color:var(--dim);font-size:15.5px;line-height:1.9}
@media(max-width:860px){
  .feature-list{gap:56px;margin-top:40px}
  .feature-row,.feature-row:nth-child(even){grid-template-columns:1fr;gap:18px;margin:0!important}
  .feature-row:nth-child(even) figure{order:0;margin-left:0}
  .feature-row figure{max-width:260px;margin:0 auto}
  .feature-text{text-align:center}
}

/* ============ 2026-11-04 移动端优化 ============ */

/* 移动端导航：汉堡菜单 */
.nav-toggle{
  display:none;background:none;border:0;color:var(--text);
  font-size:22px;line-height:1;padding:6px 10px;cursor:pointer;margin-left:auto;
}
@media (max-width:600px){
  .nav-toggle{display:block}
  .nav-links{
    display:none;position:fixed;top:0;left:0;right:0;bottom:0;
    background:rgba(8,12,18,.98);
    -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
    flex-direction:column;padding:78px 26px 40px;gap:0;
    font-size:17px;overflow-y:auto;z-index:49;margin:0;
  }
  .nav-links.open{display:flex}
  .nav-links a{padding:14px 0;border-bottom:1px solid var(--line);white-space:normal}
  .nav-links a:last-child{border-bottom:0}
}

/* 首屏按钮：手机上主按钮占整行，其余两列 */
@media (max-width:600px){
  .hero-btns{
    display:grid;grid-template-columns:1fr 1fr;gap:10px;
    width:100%;max-width:360px;margin:24px auto 0;
  }
  .hero-btns .btn{
    padding:14px 10px;font-size:14px;border-radius:14px;width:100%;
    display:flex;align-items:center;justify-content:center;
  }
  .hero-btns .btn-primary:first-child{grid-column:1 / -1}
}

/* grid 项防溢出 */
.hero-btns .btn{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* 移动端：最后一个次按钮占整行，避免右边空一格 */
@media (max-width:600px){
  .hero-btns .btn:last-child{grid-column:1 / -1}
}

/* 修复：移动端汉堡按钮靠右 + 菜单层级 */
@media (max-width:600px){
  .nav{justify-content:space-between}
  .nav-toggle{margin-left:auto;position:relative;z-index:60}
  .nav-links{z-index:60}
  .nav-links.open{z-index:60}
}

/* ============ 移动端：details 折叠菜单（2026-11-04 最终版） ============ */
.nav-menu{display:none}
@media (max-width:600px){
  .nav-links{display:none!important}
  .nav .btn{display:none!important}
  .nav-menu{display:block;margin-left:auto;position:relative}
  .nav-menu summary{
    list-style:none;cursor:pointer;padding:6px 10px;color:var(--text);
    display:flex;align-items:center;
  }
  .nav-menu summary::-webkit-details-marker{display:none}
  .nav-menu[open] summary{color:var(--accent-2)}
  .nav-panel{
    position:absolute;top:calc(100% + 10px);right:0;
    background:rgba(10,15,24,.98);
    border:1px solid var(--line-2);border-radius:16px;
    padding:8px;min-width:190px;
    box-shadow:0 20px 50px rgba(0,0,0,.55);
    display:flex;flex-direction:column;gap:2px;z-index:60;
    -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  }
  .nav-panel a{
    padding:12px 16px;border-radius:10px;color:var(--text);
    font-size:15px;white-space:nowrap;transition:background .2s;
  }
  .nav-panel a:active,.nav-panel a:hover{background:rgba(78,168,245,.14);text-decoration:none}
}