/* ==========================================================================
   Aqua Keeper — 官网共用样式 (marketing + support)
   资源均在本目录的 ../img/ 与 ../fonts/ 下，使用相对路径，
   因此同一套文件既能部署到 fascode.com/aquakeeper/，也能用 GitHub Pages 的
   /Aqua-Keeper/ 子路径直接打开。
   ========================================================================== */

@font-face{font-family:"Baloo 2";src:url("../fonts/baloo2-extrabold.woff2") format("woff2");font-weight:800;font-style:normal;font-display:swap}
@font-face{font-family:"Baloo 2";src:url("../fonts/baloo2-bold.woff2") format("woff2");font-weight:700;font-style:normal;font-display:swap}

:root{
  --deep:#052a3d;
  --deep-2:#0a4257;
  --aqua:#12a4a0;
  --aqua-soft:#35d6c4;
  --sky:#4fc3f7;
  --sun:#ffb43d;
  --ink:#0d2231;
  --ink-soft:#4a6273;
  --line:#d9e9ee;
  --bg:#f1f9fb;
  --card:#ffffff;
  --radius:20px;
  --maxw:1140px;
  --brand:"Baloo 2",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
  --body:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC",Arial,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--ink);font-family:var(--body);
  font-size:16.5px;line-height:1.75;-webkit-text-size-adjust:100%;
}
img{max-width:100%;height:auto;display:block}
a{color:#0b7c8c;text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,.brand-font{font-family:var(--brand);font-weight:800;letter-spacing:.2px;color:#083143}
:focus-visible{outline:3px solid var(--aqua-soft);outline-offset:2px;border-radius:6px}

/* ---------- i18n ---------- */
html[data-lang="en"] .zh{display:none !important}
html[data-lang="zh"] .en{display:none !important}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px}
.skip{position:absolute;left:-9999px;top:0;background:#fff;padding:10px 14px;z-index:99}
.skip:focus{left:0}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(5,42,61,.92);backdrop-filter:blur(10px);
  border-bottom:1px solid rgba(255,255,255,.12);
}
.site-header .wrap{display:flex;align-items:center;gap:18px;min-height:66px;padding-top:8px;padding-bottom:8px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand img{width:150px}
.site-nav{display:flex;gap:4px;margin-left:auto;flex-wrap:wrap}
.site-nav a{
  color:#d8f2f8;font-family:var(--brand);font-weight:700;font-size:16px;
  padding:7px 13px;border-radius:999px;text-decoration:none;
}
.site-nav a:hover{background:rgba(255,255,255,.12);text-decoration:none}
.lang-switch{display:flex;gap:4px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.22);padding:3px;border-radius:999px;flex:0 0 auto}
.lang-switch button{
  appearance:none;border:0;background:transparent;color:#dff6fb;cursor:pointer;
  font:inherit;font-family:var(--brand);font-weight:700;font-size:14px;padding:5px 13px;border-radius:999px;
}
.lang-switch button[aria-pressed="true"]{background:#eafcff;color:#07374a}
@media (max-width:720px){
  .site-header .wrap{flex-wrap:wrap;gap:10px}
  .site-nav{order:3;width:100%;justify-content:center;margin-left:0}
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  font-family:var(--brand);font-weight:800;font-size:17px;line-height:1;
  padding:14px 26px;border-radius:999px;border:0;cursor:pointer;text-decoration:none;
  background:linear-gradient(180deg,var(--aqua-soft),var(--aqua));
  color:#04303f;box-shadow:0 8px 20px rgba(18,164,160,.34),inset 0 -3px 0 rgba(0,0,0,.14);
  transition:transform .12s ease,box-shadow .12s ease;
}
.btn:hover{transform:translateY(-2px);text-decoration:none;box-shadow:0 12px 26px rgba(18,164,160,.42),inset 0 -3px 0 rgba(0,0,0,.14)}
.btn.ghost{background:rgba(255,255,255,.12);color:#eafcff;box-shadow:inset 0 0 0 2px rgba(255,255,255,.45)}
.btn.ghost:hover{background:rgba(255,255,255,.2)}
.btn.ghost-dark{background:#fff;color:#0a4257;box-shadow:inset 0 0 0 2px var(--line)}
.btn[aria-disabled="true"]{opacity:.72;cursor:default;filter:saturate(.75)}
.btn[aria-disabled="true"]:hover{transform:none}
.btn-row{display:flex;flex-wrap:wrap;gap:12px;margin:22px 0 0}
.btn .store-ico{width:20px;height:20px;flex:0 0 20px}

/* ---------- hero ---------- */
.hero{
  position:relative;overflow:hidden;color:#eafcff;
  background:
    radial-gradient(900px 420px at 8% 0%,rgba(53,214,196,.42),transparent 62%),
    radial-gradient(760px 380px at 92% 8%,rgba(79,195,247,.36),transparent 60%),
    linear-gradient(165deg,#052a3d 0%,#0a4257 52%,#0e6072 100%);
  padding:54px 0 62px;
}
.hero .wrap{display:grid;grid-template-columns:1.08fr .92fr;gap:38px;align-items:center}
@media (max-width:900px){ .hero .wrap{grid-template-columns:minmax(0,1fr);gap:28px} }
.hero h1{margin:0 0 6px;font-size:clamp(34px,5.4vw,56px);line-height:1.08;color:#fff;text-shadow:0 4px 18px rgba(0,0,0,.28)}
.hero .kicker{
  display:inline-block;font-family:var(--brand);font-weight:700;font-size:14px;letter-spacing:.08em;
  text-transform:uppercase;color:#bff0ea;background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.2);padding:5px 13px;border-radius:999px;margin-bottom:14px;
}
.hero p.lead{font-size:18.5px;color:#d6f0f7;margin:10px 0 0;max-width:36em}
.hero .trust{display:flex;flex-wrap:wrap;gap:8px 18px;margin:20px 0 0;padding:0;list-style:none;font-size:15px;color:#bfe6ee}
.hero .trust li{display:flex;align-items:center;gap:7px}
.hero .trust svg{width:17px;height:17px;flex:0 0 17px}
.hero-art{position:relative;justify-self:center}
.phone{
  width:min(300px,78vw);border-radius:38px;padding:9px;
  background:linear-gradient(160deg,#0b3d51,#06283a);
  box-shadow:0 30px 60px rgba(0,0,0,.42),inset 0 0 0 2px rgba(255,255,255,.16);
}
.phone img{border-radius:30px;width:100%}
.hero-whale{
  position:absolute;right:-64px;bottom:-46px;width:min(186px,44vw);
  pointer-events:none;filter:drop-shadow(0 18px 28px rgba(0,0,0,.42));
}
@media (max-width:900px){ .hero-whale{right:-8px;bottom:-28px;width:132px} }

/* ---------- sections ---------- */
section{padding:58px 0}
section.alt{background:#fff}
section .section-head{max-width:44em;margin:0 0 30px}
section h2{margin:0 0 8px;font-size:clamp(25px,3.4vw,34px);line-height:1.2}
section .section-head p{margin:0;color:var(--ink-soft);font-size:17px}

.grid-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(258px,1fr));gap:18px}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:22px 22px 20px;box-shadow:0 10px 26px rgba(5,42,61,.06);
}
.card h3{margin:0 0 6px;font-size:19.5px}
.card p{margin:0;color:var(--ink-soft);font-size:15.8px}
.card .icon{
  width:50px;height:50px;border-radius:15px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(160deg,#e2f8f6,#cdeefb);margin-bottom:13px;
}
.card .icon svg{width:26px;height:26px}

.steps{counter-reset:step;display:grid;grid-template-columns:repeat(auto-fit,minmax(258px,1fr));gap:18px}
.step{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px 22px 20px;box-shadow:0 10px 26px rgba(5,42,61,.06)}
.step::before{
  counter-increment:step;content:counter(step);
  position:absolute;top:-16px;left:20px;width:42px;height:42px;border-radius:14px;
  background:linear-gradient(180deg,var(--aqua-soft),var(--aqua));color:#04303f;
  font-family:var(--brand);font-weight:800;font-size:20px;display:flex;align-items:center;justify-content:center;
  box-shadow:0 8px 18px rgba(18,164,160,.35);
}
.step h3{margin:12px 0 6px;font-size:19px}
.step p{margin:0;color:var(--ink-soft);font-size:15.8px}

/* tools */
.tools{display:grid;grid-template-columns:repeat(auto-fit,minmax(148px,1fr));gap:14px;margin-top:26px}
.tool{
  background:#fff;border:1px solid var(--line);border-radius:18px;padding:16px 12px;text-align:center;
  box-shadow:0 8px 20px rgba(5,42,61,.05);
}
.tool img{width:74px;margin:0 auto 8px;filter:drop-shadow(0 6px 12px rgba(5,42,61,.18))}
.tool .name{font-family:var(--brand);font-weight:800;font-size:15.5px;color:#0a4257;display:block;line-height:1.3}

/* pets */
.pets{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:16px;margin-top:26px}
.pet{
  background:linear-gradient(180deg,#ffffff,#effafb);border:1px solid var(--line);
  border-radius:20px;padding:14px 10px 12px;text-align:center;
}
.pet img{width:100%;max-width:190px;margin:0 auto;filter:drop-shadow(0 10px 16px rgba(5,42,61,.16))}
.pet .name{display:block;margin-top:6px;font-family:var(--brand);font-weight:800;color:#0a4257;font-size:16px}

/* screenshot band */
.band{
  position:relative;color:#eafcff;overflow:hidden;
  background:linear-gradient(160deg,#06344a,#0b4c62 60%,#0f6b7c);
}
.band::after{
  content:"";position:absolute;inset:0;opacity:.16;
  background:url("../img/board.webp") center/cover no-repeat;mix-blend-mode:overlay;
}
.band .wrap{position:relative;z-index:1;display:grid;grid-template-columns:1fr auto;gap:34px;align-items:center}
@media (max-width:820px){ .band .wrap{grid-template-columns:minmax(0,1fr)} }
.band h2{color:#fff}
.band p{color:#cfeaf2}
.band .phone{width:min(268px,64vw)}

/* CTA */
.cta{
  background:linear-gradient(160deg,#0a4257,#0e6072);color:#eafcff;border-radius:26px;
  padding:34px 32px;display:grid;grid-template-columns:1fr auto;gap:24px;align-items:center;
  box-shadow:0 20px 46px rgba(5,42,61,.22);
}
@media (max-width:760px){ .cta{grid-template-columns:minmax(0,1fr);padding:26px 22px} }
.cta h2{color:#fff;margin:0 0 6px}
.cta p{margin:0;color:#cfeaf2}

/* ---------- support page ---------- */
.page-hero{
  background:linear-gradient(165deg,#052a3d,#0a4257 60%,#0e6072);color:#eafcff;padding:46px 0 52px;
}
.page-hero h1{margin:0 0 8px;color:#fff;font-size:clamp(30px,4.6vw,44px)}
.page-hero p{margin:0;color:#cfeaf2;font-size:18px;max-width:52em}

.contact-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(268px,1fr));gap:18px}
.contact-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:0 10px 26px rgba(5,42,61,.06)}
.contact-card h3{margin:0 0 4px;font-size:19px}
.contact-card p{margin:0 0 14px;color:var(--ink-soft);font-size:15.6px}
.contact-card .mail{font-family:var(--brand);font-weight:800;font-size:17px;color:#0b7c8c}

.faq{margin-top:8px}
details.q{
  background:#fff;border:1px solid var(--line);border-radius:16px;margin-bottom:12px;
  box-shadow:0 6px 18px rgba(5,42,61,.05);overflow:hidden;
}
details.q > summary{
  cursor:pointer;list-style:none;padding:17px 52px 17px 20px;position:relative;
  font-family:var(--brand);font-weight:800;font-size:17.5px;color:#0a3b51;
}
details.q > summary::-webkit-details-marker{display:none}
details.q > summary::after{
  content:"";position:absolute;right:20px;top:50%;width:11px;height:11px;
  border-right:3px solid var(--aqua);border-bottom:3px solid var(--aqua);
  transform:translateY(-70%) rotate(45deg);transition:transform .18s ease;
}
details.q[open] > summary::after{transform:translateY(-30%) rotate(-135deg)}
details.q[open] > summary{background:#f3fbfc}
details.q .a{padding:2px 20px 18px;color:var(--ink-soft);font-size:15.9px;border-top:1px solid var(--line)}
details.q .a p{margin:12px 0 0}
details.q .a ul{margin:10px 0 0;padding-left:20px}
details.q .a li{margin:4px 0}

.req{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:14px;margin-top:22px;padding:0;list-style:none}
.req li{background:#fff;border:1px solid var(--line);border-radius:16px;padding:15px 17px}
.req .k{display:block;font-size:12.5px;letter-spacing:.08em;text-transform:uppercase;color:#7e97a6;font-weight:800}
.req .v{display:block;font-family:var(--brand);font-weight:800;font-size:17px;color:#0a4257}

.checklist{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:0 10px 26px rgba(5,42,61,.06)}
.checklist ul{margin:12px 0 0;padding-left:22px}
.checklist li{margin:6px 0;color:var(--ink-soft)}

/* ---------- footer ---------- */
footer.site{background:#052a3d;color:#a9cfdb;padding:34px 0 40px;font-size:15px}
footer.site .wrap{display:flex;flex-wrap:wrap;gap:16px 28px;align-items:center}
footer.site img{width:132px}
footer.site a{color:#cfeaf2}
footer.site .links{display:flex;flex-wrap:wrap;gap:16px;margin-left:auto}
footer.site .fine{width:100%;color:#7fa8b6;font-size:13.6px;border-top:1px solid rgba(255,255,255,.12);padding-top:16px;margin-top:4px}

@media print{
  .site-header,.lang-switch,footer.site{display:none}
  body{background:#fff}
}