/* ==========================================================
   漫蛙3 · 主题站群共享样式
   设计方向：漫画阅读类应用的清新活泼调性
   主色：青蛙绿 / 青绿   辅助色：暖橙 / 樱花粉
   所有静态资源均本地化，不引用任何外部 CDN
   ========================================================== */

/* ---------- 本地字体（Baloo 2 可变字体，仅拉丁/数字子集） ---------- */
@font-face{
  font-family:"Manwa Num";
  font-style:normal;
  font-weight:400 800;
  font-display:swap;
  src:url("../fonts/baloo2-var.woff2") format("woff2");
  unicode-range:U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

:root{
  --brand:#12B886;
  --brand-2:#0EA5A5;
  --brand-deep:#0B7A5A;
  --brand-soft:#E6F9F1;
  --accent:#FF8A3B;
  --accent-soft:#FFF1E5;
  --pink:#FF6B9D;
  --pink-soft:#FFEDF4;

  --ink:#16303A;
  --ink-2:#4A6B78;
  --ink-3:#7C96A1;
  --bg:#F3FBF8;
  --card:#FFFFFF;
  --line:#DFF1EA;
  --line-2:#EAF5F1;

  --r-s:10px;
  --r-m:16px;
  --r-l:24px;
  --r-xl:34px;

  --shadow-s:0 2px 10px rgba(18,60,52,.06);
  --shadow-m:0 10px 30px rgba(14,90,72,.10);
  --shadow-l:0 24px 60px rgba(11,80,64,.14);

  --maxw:1180px;
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Hiragino Sans GB","Source Han Sans SC","Noto Sans CJK SC",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  --font-num:"Manwa Num","Poppins","Segoe UI",var(--font);
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  color:var(--ink);
  background:var(--bg);
  line-height:1.75;
  font-size:16px;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{margin:0;line-height:1.35;font-weight:800;letter-spacing:.2px}
p{margin:0 0 1em}
ul,ol{margin:0 0 1em;padding-left:1.25em}
li{margin:.35em 0}
button{font-family:inherit}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* ---------- 顶部导航 ---------- */
.site-head{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.86);
  backdrop-filter:saturate(160%) blur(14px);
  border-bottom:1px solid var(--line);
}
.head-in{display:flex;align-items:center;gap:14px;height:66px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand img{width:38px;height:38px;border-radius:11px;box-shadow:var(--shadow-s)}
.brand-text{display:flex;flex-direction:column;line-height:1.1}
.brand-name{font-size:19px;font-weight:900;letter-spacing:.5px;color:var(--brand-deep)}
.brand-sub{font-size:10px;letter-spacing:1.6px;color:var(--ink-3);text-transform:uppercase}

.nav{display:flex;align-items:center;gap:4px;margin-left:auto;flex-wrap:wrap}
.nav a{
  padding:8px 13px;border-radius:999px;font-size:15px;font-weight:600;color:var(--ink-2);
  transition:.22s;
}
.nav a:hover{background:var(--brand-soft);color:var(--brand-deep)}
.nav a.on{background:var(--brand);color:#fff;box-shadow:0 6px 16px rgba(18,184,134,.32)}
.nav .nav-dl{
  margin-left:8px;background:linear-gradient(135deg,var(--accent),#FF6B4A);color:#fff;
  padding:9px 20px;box-shadow:0 8px 20px rgba(255,138,59,.34);
}
.nav .nav-dl:hover{background:linear-gradient(135deg,#FF7A26,#FF5A38);color:#fff;transform:translateY(-1px)}

.burger{display:none;margin-left:auto;width:42px;height:42px;border:1px solid var(--line);
  background:#fff;border-radius:12px;cursor:pointer;align-items:center;justify-content:center}
.burger span{display:block;width:18px;height:2px;background:var(--brand-deep);border-radius:2px;position:relative}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--brand-deep);border-radius:2px}
.burger span::before{top:-6px}.burger span::after{top:6px}

/* ---------- 通用按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:14px 30px;border-radius:999px;font-weight:800;font-size:16px;cursor:pointer;border:0;
  transition:transform .2s,box-shadow .2s,background .2s;
}
.btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;
  box-shadow:0 12px 28px rgba(14,165,165,.32)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 36px rgba(14,165,165,.4)}
.btn-accent{background:linear-gradient(135deg,var(--accent),#FF6B4A);color:#fff;
  box-shadow:0 12px 28px rgba(255,138,59,.34)}
.btn-accent:hover{transform:translateY(-2px);box-shadow:0 18px 36px rgba(255,138,59,.44)}
.btn-ghost{background:#fff;color:var(--brand-deep);border:1.5px solid var(--line);box-shadow:var(--shadow-s)}
.btn-ghost:hover{border-color:var(--brand);transform:translateY(-2px)}
.btn svg{width:19px;height:19px}
.btn-sm{padding:10px 20px;font-size:14.5px}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  background:
    radial-gradient(900px 420px at 88% -10%,rgba(255,138,59,.20),transparent 62%),
    radial-gradient(760px 420px at 4% 8%,rgba(18,184,134,.20),transparent 60%),
    linear-gradient(150deg,#EAFBF4 0%,#F6FFFB 42%,#FFF6EC 100%);
  padding:64px 0 76px;
}
.hero::after{
  content:"";position:absolute;inset:auto 0 -1px 0;height:60px;
  background:linear-gradient(to bottom,transparent,var(--bg));
}
.hero-grid{display:grid;grid-template-columns:1.06fr .94fr;gap:48px;align-items:center;position:relative;z-index:2}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--line);
  color:var(--brand-deep);font-size:13.5px;font-weight:700;padding:7px 15px;border-radius:999px;
  box-shadow:var(--shadow-s);margin-bottom:18px;
}
.eyebrow i{width:8px;height:8px;border-radius:50%;background:var(--accent);display:inline-block;
  box-shadow:0 0 0 4px rgba(255,138,59,.18)}
.hero h1{font-size:clamp(28px,4vw,44px);letter-spacing:.4px;margin-bottom:16px}
.hero h1 em{font-style:normal;background:linear-gradient(120deg,var(--brand),var(--brand-2) 55%,var(--accent));
  -webkit-background-clip:text;background-clip:text;color:transparent}
.hero-lead{font-size:17px;color:var(--ink-2);max-width:560px;margin-bottom:26px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:26px}
.hero-meta{display:flex;gap:26px;flex-wrap:wrap;padding-top:22px;border-top:1px dashed var(--line)}
.hero-meta div{line-height:1.3}
.hero-meta b{display:block;font-size:22px;color:var(--brand-deep);font-family:var(--font-num)}
.hero-meta span{font-size:13px;color:var(--ink-3)}

/* 手机展示 */
.hero-visual{position:relative;display:flex;justify-content:center}
.phone{
  width:270px;background:#0E2A30;border-radius:38px;padding:11px;
  box-shadow:var(--shadow-l);position:relative;z-index:2;
}
.phone::before{content:"";position:absolute;top:20px;left:50%;transform:translateX(-50%);
  width:78px;height:6px;border-radius:99px;background:#2A4A52;z-index:3}
.phone img{border-radius:29px;width:100%;height:auto}
.float-card{
  position:absolute;background:#fff;border-radius:var(--r-m);padding:12px 16px;
  box-shadow:var(--shadow-m);display:flex;align-items:center;gap:10px;z-index:3;
  animation:bob 4.5s ease-in-out infinite;
}
.float-card .fc-ic{width:36px;height:36px;border-radius:11px;display:grid;place-items:center;flex:0 0 auto}
.float-card b{display:block;font-size:14px}
.float-card span{font-size:12px;color:var(--ink-3)}
.fc-a{top:12%;left:-4%;background:#fff}
.fc-a .fc-ic{background:var(--brand-soft);color:var(--brand-deep)}
.fc-b{bottom:16%;right:-6%;animation-delay:1.4s}
.fc-b .fc-ic{background:var(--accent-soft);color:#D9660F}
@keyframes bob{0%,100%{transform:translateY(0)}50%{transform:translateY(-11px)}}

/* ---------- 数据条 ---------- */
.stats{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.stats-in{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;padding:26px 0}
.stat{text-align:center;padding:6px 10px}
.stat b{display:block;font-size:clamp(22px,3vw,30px);font-family:var(--font-num);font-weight:900;
  background:linear-gradient(120deg,var(--brand),var(--brand-2));-webkit-background-clip:text;background-clip:text;color:transparent}
.stat span{font-size:13.5px;color:var(--ink-2)}
.stat+.stat{border-left:1px dashed var(--line)}

/* ---------- 通用区块 ---------- */
.section{padding:70px 0}
.section.alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{text-align:center;max-width:760px;margin:0 auto 44px}
.sec-tag{display:inline-block;font-size:13px;font-weight:800;letter-spacing:2px;color:var(--brand);
  background:var(--brand-soft);padding:5px 14px;border-radius:999px;margin-bottom:14px}
.sec-head h2{font-size:clamp(23px,3.1vw,33px);margin-bottom:12px}
.sec-head p{color:var(--ink-2);font-size:16px;margin:0}
.sec-head.left{text-align:left;margin-left:0}

/* ---------- 卖点卡片 ---------- */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.feat{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-l);padding:26px 24px;
  box-shadow:var(--shadow-s);transition:.25s;position:relative;overflow:hidden;
}
.feat::before{content:"";position:absolute;top:0;left:0;width:100%;height:4px;
  background:linear-gradient(90deg,var(--brand),var(--brand-2));opacity:0;transition:.25s}
.feat:hover{transform:translateY(-5px);box-shadow:var(--shadow-m);border-color:transparent}
.feat:hover::before{opacity:1}
.feat .fic{width:52px;height:52px;border-radius:16px;display:grid;place-items:center;margin-bottom:16px;
  background:linear-gradient(135deg,var(--brand-soft),#D8F5EA);color:var(--brand-deep)}
.feat.o .fic{background:linear-gradient(135deg,var(--accent-soft),#FFE3D0);color:#D9660F}
.feat.p .fic{background:linear-gradient(135deg,var(--pink-soft),#FFE0EC);color:#D6437A}
.feat .fic svg{width:26px;height:26px}
.feat h3{font-size:18.5px;margin-bottom:8px}
.feat p{color:var(--ink-2);font-size:14.8px;margin:0}

/* ---------- 截图预览 ---------- */
.shots{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.shot{background:#fff;border:1px solid var(--line);border-radius:var(--r-m);overflow:hidden;
  box-shadow:var(--shadow-s);transition:.25s;display:flex;flex-direction:column}
.shot:hover{transform:translateY(-6px);box-shadow:var(--shadow-m)}
.shot .thumb{
  height:292px;flex:0 0 auto;background:linear-gradient(160deg,#EAFBF4,#FFF6EC);
  display:flex;align-items:center;justify-content:center;padding:16px;
}
.shot .thumb img{border-radius:14px;box-shadow:0 6px 20px rgba(11,80,64,.14);
  width:auto;height:auto;max-width:100%;max-height:260px}
.shot .cap{padding:12px 16px 16px;margin-top:auto;border-top:1px solid var(--line-2)}
.shot .cap b{display:block;font-size:15px}
.shot .cap span{font-size:12.8px;color:var(--ink-3)}

/* ---------- 深度内容入口 ---------- */
.entry{
  display:block;background:#fff;border:1px solid var(--line);border-radius:var(--r-l);
  padding:28px 26px;box-shadow:var(--shadow-s);transition:.25s;position:relative;
}
.entry:hover{transform:translateY(-5px);box-shadow:var(--shadow-m)}
.entry .etag{font-size:12.5px;font-weight:800;color:var(--brand);background:var(--brand-soft);
  padding:4px 12px;border-radius:999px;display:inline-block;margin-bottom:14px}
.entry h3{font-size:20px;margin-bottom:10px}
.entry p{color:var(--ink-2);font-size:14.8px;margin:0 0 16px}
.entry .more{font-weight:800;color:var(--brand-deep);font-size:14.5px;display:inline-flex;align-items:center;gap:6px}
.entry:hover .more{gap:11px}
.entry .more{transition:gap .2s}

/* ---------- 功能列表（左右交替） ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
.split+.split{margin-top:56px}
.split .txt h3{font-size:clamp(20px,2.4vw,25px);margin-bottom:12px}
.split .txt p{color:var(--ink-2);font-size:15.5px}
.split .txt .lst{list-style:none;padding:0;margin:16px 0 0}
.split .txt .lst li{position:relative;padding-left:26px;font-size:15px;color:var(--ink-2)}
.split .txt .lst li::before{content:"";position:absolute;left:0;top:9px;width:14px;height:14px;border-radius:5px;
  background:var(--brand-soft);box-shadow:inset 0 0 0 2px var(--brand)}
.split .visual{background:linear-gradient(160deg,#EAFBF4,#FFF6EC);border-radius:var(--r-xl);padding:26px;
  display:flex;justify-content:center;box-shadow:var(--shadow-s)}
.split .visual img{border-radius:22px;box-shadow:var(--shadow-m)}
.split.rev .visual{background:linear-gradient(160deg,#FFF6EC,#EAFBF4)}

/* ---------- 评价 ---------- */
.quotes{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.quote{background:#fff;border:1px solid var(--line);border-radius:var(--r-l);padding:24px 24px 20px;
  box-shadow:var(--shadow-s);display:flex;flex-direction:column}
.quote .stars{color:#FFB020;font-size:15px;letter-spacing:2px;margin-bottom:10px}
.quote p{font-size:14.9px;color:var(--ink-2);flex:1}
.quote .who{display:flex;align-items:center;gap:11px;padding-top:14px;border-top:1px dashed var(--line)}
.quote .ava{width:38px;height:38px;border-radius:50%;display:grid;place-items:center;font-weight:900;color:#fff;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));font-size:15px;flex:0 0 auto}
.quote .who b{font-size:14.5px;display:block}
.quote .who span{font-size:12.5px;color:var(--ink-3)}

/* ---------- FAQ 折叠 ---------- */
.faq{max-width:900px;margin:0 auto}
.qa{background:#fff;border:1px solid var(--line);border-radius:var(--r-m);margin-bottom:12px;
  box-shadow:var(--shadow-s);overflow:hidden}
.qa summary{
  cursor:pointer;list-style:none;padding:17px 52px 17px 22px;font-weight:700;font-size:16px;
  position:relative;color:var(--ink);
}
.qa summary::-webkit-details-marker{display:none}
.qa summary::after{content:"";position:absolute;right:22px;top:22px;width:11px;height:11px;
  border-right:2.4px solid var(--brand);border-bottom:2.4px solid var(--brand);
  transform:rotate(45deg);transition:.25s}
.qa[open] summary::after{transform:rotate(-135deg)}
.qa[open] summary{color:var(--brand-deep);background:linear-gradient(90deg,var(--brand-soft),#fff)}
.qa .a{padding:2px 22px 18px;color:var(--ink-2);font-size:15px;border-top:1px dashed var(--line)}
.qa .a p:last-child{margin-bottom:0}

/* ---------- 内页 Hero ---------- */
.page-hero{
  background:
    radial-gradient(700px 320px at 90% 0%,rgba(255,138,59,.18),transparent 60%),
    linear-gradient(150deg,#EAFBF4,#FFF9F2);
  padding:52px 0 46px;border-bottom:1px solid var(--line);
}
.crumb{font-size:13.5px;color:var(--ink-3);margin-bottom:14px}
.crumb a{color:var(--brand-deep);font-weight:600}
.crumb a:hover{text-decoration:underline}
.page-hero h1{font-size:clamp(25px,3.6vw,38px);max-width:900px;margin-bottom:14px}
.page-hero .sub{font-size:16.5px;color:var(--ink-2);max-width:820px;margin:0}
.page-hero .tags{display:flex;gap:9px;flex-wrap:wrap;margin-top:18px}
.page-hero .tags span{background:#fff;border:1px solid var(--line);color:var(--ink-2);font-size:13px;
  padding:5px 13px;border-radius:999px;box-shadow:var(--shadow-s)}

/* ---------- 长文排版 ---------- */
.article{max-width:900px;margin:0 auto}
.article>*+*{margin-top:18px}
.article h2{font-size:clamp(20px,2.6vw,26px);margin-top:44px;padding-left:16px;position:relative}
.article h2::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:5px;border-radius:4px;
  background:linear-gradient(180deg,var(--brand),var(--brand-2))}
.article h3{font-size:18.5px;margin-top:26px}
.article p{color:#2C4954;font-size:16px}
.article .lead{font-size:17.5px;color:var(--ink-2);background:#fff;border:1px solid var(--line);
  border-left:4px solid var(--brand);border-radius:var(--r-m);padding:18px 22px;box-shadow:var(--shadow-s)}
.article a.inline{color:var(--brand-deep);font-weight:700;border-bottom:2px solid var(--brand-soft)}
.article a.inline:hover{border-bottom-color:var(--brand)}
.note{background:var(--accent-soft);border:1px solid #FFE0C7;border-radius:var(--r-m);padding:16px 20px;font-size:15px;color:#8A4A11}
.note b{color:#C2550A}
.tip{background:var(--brand-soft);border:1px solid #CDEFE2;border-radius:var(--r-m);padding:16px 20px;font-size:15px;color:#0B6B50}

/* 步骤 */
.steps{counter-reset:st;list-style:none;padding:0;margin:26px 0 0}
.steps li{counter-increment:st;position:relative;padding:0 0 22px 62px;border-left:2px dashed var(--line);margin-left:20px}
.steps li:last-child{border-left-color:transparent;padding-bottom:0}
.steps li::before{content:counter(st,decimal-leading-zero);position:absolute;left:-21px;top:-2px;
  width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--brand-2));
  color:#fff;font-weight:900;display:grid;place-items:center;font-size:15px;
  box-shadow:0 8px 18px rgba(14,165,165,.28);font-family:var(--font-num)}
.steps li b{display:block;font-size:17px;margin-bottom:5px}
.steps li p{margin:0;color:var(--ink-2);font-size:15.2px}

/* 表格 */
.tbl-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r-m);box-shadow:var(--shadow-s);background:#fff}
table.tbl{width:100%;border-collapse:collapse;min-width:560px;font-size:14.8px}
table.tbl th,table.tbl td{padding:13px 16px;text-align:left;border-bottom:1px solid var(--line-2)}
table.tbl th{background:var(--brand-soft);color:var(--brand-deep);font-weight:800;white-space:nowrap}
table.tbl tr:last-child td{border-bottom:0}
table.tbl tbody tr:hover{background:#FAFEFC}

/* 卡片列表 */
.cards-2{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.mini{background:#fff;border:1px solid var(--line);border-radius:var(--r-m);padding:20px 22px;box-shadow:var(--shadow-s)}
.mini h3{font-size:17px;margin-bottom:8px;display:flex;align-items:center;gap:9px}
.mini h3 .dot{width:26px;height:26px;border-radius:9px;background:var(--brand-soft);color:var(--brand-deep);
  display:grid;place-items:center;font-size:13px;font-weight:900;flex:0 0 auto}
.mini p{margin:0;font-size:14.8px;color:var(--ink-2)}

/* ---------- 底部下载通道 ---------- */
.cta-band{
  background:
    radial-gradient(600px 300px at 12% 10%,rgba(255,255,255,.16),transparent 60%),
    linear-gradient(135deg,var(--brand-deep),var(--brand-2) 60%,var(--brand));
  color:#fff;border-radius:var(--r-xl);padding:48px 40px;text-align:center;
  box-shadow:var(--shadow-l);position:relative;overflow:hidden;
}
.cta-band h2{font-size:clamp(22px,3vw,32px);color:#fff;margin-bottom:12px}
.cta-band p{color:rgba(255,255,255,.9);max-width:640px;margin:0 auto 26px;font-size:16px}
.cta-band .btn-accent{background:#fff;color:var(--brand-deep);box-shadow:0 14px 30px rgba(0,0,0,.16)}
.cta-band .btn-accent:hover{background:#fff;color:var(--brand-deep)}
.cta-band .cta-sub{margin-top:16px;font-size:13.5px;color:rgba(255,255,255,.82)}

/* ---------- 页脚 ---------- */
.site-foot{background:#0E2A30;color:#B9D2D8;margin-top:0;padding:52px 0 26px;font-size:14.5px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:32px}
.site-foot .fbrand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.site-foot .fbrand img{width:40px;height:40px;border-radius:12px}
.site-foot .fbrand b{font-size:19px;color:#fff;font-weight:900}
.site-foot h4{color:#fff;font-size:16px;margin-bottom:14px}
.site-foot ul{list-style:none;padding:0;margin:0}
.site-foot ul li{margin:8px 0}
.site-foot a{color:#B9D2D8;transition:.2s}
.site-foot a:hover{color:#fff}
.site-foot .fnote{color:#8FB0B8;font-size:13.6px;line-height:1.7;margin:0}
.foot-line{border-top:1px solid rgba(255,255,255,.12);margin-top:34px;padding-top:22px}
.disclaimer{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);border-radius:var(--r-m);
  padding:14px 18px;font-size:13.4px;color:#9FBCC4;line-height:1.75}
.copy{margin-top:16px;text-align:center;color:#7FA0A8;font-size:13.2px}

/* ---------- 滚动动效 ---------- */
/* 仅在 JS 可用时启用初始隐藏，避免脚本异常导致内容不可见 */
.js .reveal{opacity:0;transform:translateY(22px)}
.reveal{transition:opacity .6s ease,transform .6s ease}
.js .reveal.in{opacity:1;transform:none}
/* 尊重系统「减弱动态效果」偏好，直接呈现内容 */
@media (prefers-reduced-motion: reduce){
  .js .reveal{opacity:1;transform:none}
  .float-card{animation:none}
  html{scroll-behavior:auto}
}

/* ---------- 返回顶部 ---------- */
.to-top{position:fixed;right:22px;bottom:26px;width:46px;height:46px;border-radius:50%;border:0;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;cursor:pointer;
  box-shadow:var(--shadow-m);display:grid;place-items:center;opacity:0;pointer-events:none;
  transition:.3s;z-index:70}
.to-top.show{opacity:1;pointer-events:auto}
.to-top svg{width:20px;height:20px}

/* ---------- 顶部下载提示条 ---------- */
.dl-bar{position:fixed;left:0;right:0;bottom:0;z-index:80;background:#fff;border-top:1px solid var(--line);
  box-shadow:0 -8px 26px rgba(11,80,64,.12);padding:10px 16px;display:none;align-items:center;gap:14px}
.dl-bar .db-icon{width:40px;height:40px;border-radius:12px;flex:0 0 auto}
.dl-bar .db-txt{flex:1;line-height:1.25;min-width:0}
.dl-bar .db-txt b{font-size:15px;display:block}
.dl-bar .db-txt span{font-size:12.5px;color:var(--ink-3)}
.dl-bar .btn{padding:11px 22px;font-size:14.5px}

/* ---------- 响应式 ---------- */
@media (max-width:1000px){
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-visual{order:-1}
  .grid-3,.quotes{grid-template-columns:repeat(2,1fr)}
  .shots{grid-template-columns:repeat(3,1fr)}
  .foot-grid{grid-template-columns:1fr 1fr}
  .nav a{padding:7px 10px;font-size:14px}
}
@media (max-width:760px){
  body{font-size:15.4px}
  .nav{display:none;position:absolute;left:0;right:0;top:66px;background:#fff;flex-direction:column;
    align-items:stretch;gap:2px;padding:12px 16px 18px;border-bottom:1px solid var(--line);
    box-shadow:var(--shadow-m)}
  .nav.open{display:flex}
  .nav a{padding:11px 14px}
  .nav .nav-dl{margin:8px 0 0;justify-content:center}
  .burger{display:flex}
  .grid-3,.grid-2,.quotes,.cards-2,.shots{grid-template-columns:1fr}
  .shots{grid-template-columns:repeat(2,1fr)}
  .split,.split.rev{grid-template-columns:1fr;gap:24px}
  .split.rev .visual{order:-1}
  .split+.split{margin-top:40px}
  .stats-in{grid-template-columns:1fr 1fr;gap:18px 0}
  .stat:nth-child(3){border-left:0}
  .stat:nth-child(odd){border-left:0}
  .stat:nth-child(even){border-left:1px dashed var(--line)}
  .section{padding:52px 0}
  .hero{padding:44px 0 56px}
  .cta-band{padding:36px 22px;border-radius:26px}
  .foot-grid{grid-template-columns:1fr;gap:26px}
  .float-card{display:none}
  .dl-bar{display:flex}
  body{padding-bottom:66px}
  .to-top{bottom:84px;right:16px}
  .shot .thumb{height:250px}
  .shot .thumb img{max-height:220px}
}
@media (max-width:420px){
  .shots{grid-template-columns:1fr}
  .shot .thumb{height:300px}
  .shot .thumb img{max-height:268px}
  .stat b{font-size:21px}
}