/* Asia Mail Services — folha de estilo unica, sem dependencia externa.
   Nenhuma fonte ou script de CDN: o site precisa abrir dentro da China. */

:root{
  --ink:#0b1622;
  --ink-2:#12243a;
  --text:#1b2734;
  --muted:#5c6b7d;
  --line:#e3e9f0;
  --bg:#ffffff;
  --bg-soft:#f5f8fb;
  --jade:#0e9384;
  --jade-dark:#0a6d63;
  --jade-soft:#e6f5f3;
  --amber:#b4801d;
  --radius:14px;
  --radius-sm:9px;
  --wrap:1120px;
  --shadow:0 1px 2px rgba(11,22,34,.04),0 8px 24px rgba(11,22,34,.06);
  --shadow-lg:0 2px 4px rgba(11,22,34,.05),0 18px 44px rgba(11,22,34,.10);
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans",sans-serif;
  --font-cjk:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC","Source Han Sans SC",sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;font-family:var(--font);color:var(--text);background:var(--bg);
  font-size:17px;line-height:1.65;-webkit-font-smoothing:antialiased;
}
html[lang="zh-Hans"] body{font-family:var(--font-cjk);line-height:1.8}
img{max-width:100%;height:auto}
a{color:var(--jade-dark);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,h4{line-height:1.22;letter-spacing:-.018em;color:var(--ink);margin:0 0 .5em}
h1{font-size:clamp(2.1rem,4.6vw,3.35rem);font-weight:700}
h2{font-size:clamp(1.5rem,2.9vw,2.1rem);font-weight:650}
h3{font-size:1.16rem;font-weight:650}
p{margin:0 0 1.05em}
hr{border:0;border-top:1px solid var(--line);margin:2.5rem 0}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px}
.narrow{max-width:780px}

/* ---------- header ---------- */
.site-head{
  position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);
  backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid var(--line);
}
.head-in{display:flex;align-items:center;gap:22px;height:66px}
.brand{display:flex;align-items:center;gap:10px;font-weight:680;color:var(--ink);letter-spacing:-.02em;font-size:1.03rem;white-space:nowrap}
.brand:hover{text-decoration:none}
.brand svg{flex:none}
.nav{display:flex;gap:4px;margin-left:auto;align-items:center}
.nav a{
  color:var(--muted);font-size:.945rem;font-weight:520;padding:8px 12px;border-radius:8px;
}
.nav a:hover{color:var(--ink);background:var(--bg-soft);text-decoration:none}
.nav a.on{color:var(--ink);background:var(--bg-soft)}
.nav a.portal{
  color:var(--ink);font-weight:620;border:1px solid var(--line);
  padding:7px 15px;border-radius:8px;margin-left:8px;
}
.nav a.portal:hover{
  background:var(--jade-soft);color:var(--jade-dark);border-color:var(--jade);text-decoration:none;
}
@media (max-width:900px){.nav a.portal{margin:8px 0 0;text-align:center}}
.langs{display:flex;gap:2px;margin-left:12px;padding-left:14px;border-left:1px solid var(--line)}
.langs a{font-size:.86rem;font-weight:600;color:var(--muted);padding:6px 9px;border-radius:7px}
.langs a:hover{background:var(--bg-soft);color:var(--ink);text-decoration:none}
.langs a.on{background:var(--jade-soft);color:var(--jade-dark)}
.burger{display:none;margin-left:auto;background:none;border:1px solid var(--line);border-radius:9px;padding:8px 10px;cursor:pointer;color:var(--ink)}

@media (max-width:900px){
  .burger{display:block}
  .nav{
    display:none;position:absolute;top:66px;left:0;right:0;background:#fff;
    border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch;
    gap:0;padding:10px 16px 16px;box-shadow:var(--shadow);margin-left:0;
  }
  .nav.open{display:flex}
  .nav a{padding:11px 12px;font-size:1rem}
  .langs{margin:10px 0 0;padding:12px 0 0;border-left:0;border-top:1px solid var(--line)}
}

/* ---------- hero ---------- */
.hero{
  background:
    radial-gradient(1100px 520px at 78% -8%,rgba(14,147,132,.30),transparent 62%),
    radial-gradient(760px 420px at 8% 108%,rgba(30,86,140,.34),transparent 60%),
    linear-gradient(168deg,var(--ink) 0%,var(--ink-2) 100%);
  color:#eaf1f7;padding:88px 0 92px;position:relative;overflow:hidden;
}
.hero h1{color:#fff;max-width:16ch}
.hero .lead{font-size:clamp(1.06rem,1.9vw,1.28rem);color:#b8c9da;max-width:60ch;margin-bottom:1.9em}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:.79rem;font-weight:640;
  letter-spacing:.09em;text-transform:uppercase;color:#7fd8cc;
  background:rgba(14,147,132,.16);border:1px solid rgba(127,216,204,.28);
  padding:6px 13px;border-radius:999px;margin-bottom:22px;
}
html[lang="zh-Hans"] .eyebrow{letter-spacing:.04em;text-transform:none}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:10px;font-weight:620;font-size:1rem;
  border:1px solid transparent;cursor:pointer;transition:transform .12s ease,background .16s ease;
}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn-primary{background:var(--jade);color:#fff}
.btn-primary:hover{background:#0fa799;color:#fff}
.btn-ghost{background:rgba(255,255,255,.06);color:#eaf1f7;border-color:rgba(255,255,255,.24)}
.btn-ghost:hover{background:rgba(255,255,255,.13);color:#fff}
.btn-dark{background:var(--ink);color:#fff}
.btn-dark:hover{background:var(--ink-2);color:#fff}
.btn-line{background:#fff;color:var(--ink);border-color:var(--line)}
.btn-line:hover{border-color:#c6d2df}

/* hero stats */
.hero-stats{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:14px;
  margin-top:56px;padding-top:34px;border-top:1px solid rgba(255,255,255,.13);
}
.hero-stats div strong{display:block;color:#fff;font-size:1.42rem;font-weight:680;letter-spacing:-.02em}
.hero-stats div span{color:#93a8bd;font-size:.88rem}

/* ---------- sections ---------- */
section{padding:76px 0}
.soft{background:var(--bg-soft);border-block:1px solid var(--line)}
.sec-head{max-width:70ch;margin-bottom:44px}
.sec-head p{color:var(--muted);font-size:1.06rem;margin-bottom:0}
.kicker{
  font-size:.78rem;font-weight:680;letter-spacing:.1em;text-transform:uppercase;
  color:var(--jade-dark);margin-bottom:12px;display:block;
}
html[lang="zh-Hans"] .kicker{letter-spacing:.04em;text-transform:none}

/* pain table */
.pain{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff}
.pain-row{display:grid;grid-template-columns:1fr 1.25fr;gap:0;border-top:1px solid var(--line)}
.pain-row:first-child{border-top:0}
.pain-row > div{padding:18px 22px}
.pain-row > div:first-child{background:var(--bg-soft);font-weight:600;color:var(--ink);border-right:1px solid var(--line)}
.pain-row > div:last-child{color:var(--muted)}
@media (max-width:720px){
  .pain-row{grid-template-columns:1fr}
  .pain-row > div:first-child{border-right:0;border-bottom:1px solid var(--line)}
}

/* feature grid */
.grid{display:grid;gap:20px}
.g3{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.g2{grid-template-columns:repeat(auto-fit,minmax(320px,1fr))}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:26px;box-shadow:var(--shadow);
}
.card h3{margin-bottom:.45em}
.card p{color:var(--muted);font-size:.97rem;margin-bottom:0}
.ico{
  width:42px;height:42px;border-radius:11px;background:var(--jade-soft);color:var(--jade-dark);
  display:flex;align-items:center;justify-content:center;margin-bottom:18px;
}

/* infra list */
.specs{list-style:none;margin:0;padding:0;border:1px solid var(--line);border-radius:var(--radius);background:#fff;overflow:hidden}
.specs li{display:grid;grid-template-columns:220px 1fr;gap:16px;padding:15px 22px;border-top:1px solid var(--line)}
.specs li:first-child{border-top:0}
.specs li strong{color:var(--ink);font-weight:620;font-size:.95rem}
.specs li span{color:var(--muted);font-size:.97rem}
.specs code{font-family:var(--mono);font-size:.87em;background:var(--bg-soft);padding:2px 6px;border-radius:5px;color:var(--ink-2)}
@media (max-width:640px){.specs li{grid-template-columns:1fr;gap:4px}}

/* plans */
.plans{display:grid;gap:22px;grid-template-columns:repeat(auto-fit,minmax(270px,1fr));align-items:start}
.plan{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px 26px;
  box-shadow:var(--shadow);position:relative;
}
.plan.best{border-color:var(--jade);box-shadow:var(--shadow-lg)}
.plan .tag{
  position:absolute;top:-11px;left:26px;background:var(--jade);color:#fff;
  font-size:.72rem;font-weight:680;letter-spacing:.07em;text-transform:uppercase;
  padding:4px 11px;border-radius:999px;
}
html[lang="zh-Hans"] .plan .tag{letter-spacing:.02em;text-transform:none}
.plan h3{font-size:1.28rem;margin-bottom:4px}
.plan .sub{color:var(--muted);font-size:.92rem;margin-bottom:20px}
.price{display:flex;align-items:baseline;gap:7px;margin-bottom:4px}
.price b{font-size:2.3rem;font-weight:700;letter-spacing:-.03em;color:var(--ink)}
.price span{color:var(--muted);font-size:.92rem}
.price-alt{color:var(--muted);font-size:.88rem;margin-bottom:22px}
.plan ul{list-style:none;margin:0 0 24px;padding:0}
.plan li{
  padding:7px 0 7px 27px;position:relative;font-size:.96rem;color:var(--text);
}
.plan li::before{
  content:"";position:absolute;left:2px;top:14px;width:11px;height:6px;
  border-left:2px solid var(--jade);border-bottom:2px solid var(--jade);
  transform:rotate(-45deg);
}
.plan .btn{width:100%}

/* generic table */
.tbl{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.tbl th,.tbl td{text-align:left;padding:14px 20px;border-top:1px solid var(--line);font-size:.97rem}
.tbl th{background:var(--bg-soft);color:var(--ink);font-weight:640;border-top:0;font-size:.9rem}
.tbl td:last-child{color:var(--muted)}
.tbl-scroll{overflow-x:auto}

/* callout */
.note{
  border:1px solid var(--line);border-left:4px solid var(--amber);background:#fffdf7;
  border-radius:var(--radius-sm);padding:20px 24px;color:var(--text);
}
.note.jade{border-left-color:var(--jade);background:var(--jade-soft)}
.note p:last-child{margin-bottom:0}
.note strong{color:var(--ink)}

/* contact cards */
.contact-grid{display:grid;gap:18px;grid-template-columns:repeat(auto-fit,minmax(250px,1fr))}
.cc{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}
.cc h3{font-size:1.02rem;margin-bottom:6px}
.cc a{font-family:var(--mono);font-size:.95rem;word-break:break-all;font-weight:600}
.cc p{color:var(--muted);font-size:.92rem;margin:8px 0 0}

/* legal */
.legal{max-width:800px}
.legal h2{font-size:1.28rem;margin-top:2.4em;padding-top:.2em}
.legal h2:first-of-type{margin-top:1.2em}
.legal h3{font-size:1.03rem;margin-top:1.9em}
.legal p,.legal li{color:#33414f;font-size:1rem}
.legal ul,.legal ol{padding-left:1.35em;margin:0 0 1.15em}
.legal li{margin-bottom:.45em}
.legal .updated{
  color:var(--muted);font-size:.9rem;border:1px solid var(--line);background:var(--bg-soft);
  border-radius:var(--radius-sm);padding:12px 18px;margin-bottom:2em;
}
.page-head{padding:56px 0 10px}
.page-head h1{font-size:clamp(1.9rem,3.6vw,2.7rem)}
.page-head p{color:var(--muted);font-size:1.1rem;max-width:65ch;margin-bottom:0}

/* cta band */
.band{
  background:linear-gradient(150deg,var(--ink) 0%,var(--ink-2) 100%);
  color:#eaf1f7;border-radius:18px;padding:52px 44px;text-align:center;
}
.band h2{color:#fff}
.band p{color:#b0c2d4;max-width:56ch;margin:0 auto 28px}
.band .hero-cta{justify-content:center}
@media (max-width:640px){.band{padding:38px 24px;border-radius:14px}}

/* footer */
.site-foot{background:var(--ink);color:#93a8bd;padding:58px 0 34px;font-size:.93rem;margin-top:0}
.foot-grid{display:grid;gap:34px;grid-template-columns:1.6fr 1fr 1fr 1fr}
@media (max-width:820px){.foot-grid{grid-template-columns:1fr 1fr}}
@media (max-width:520px){.foot-grid{grid-template-columns:1fr}}
.site-foot h4{color:#fff;font-size:.82rem;letter-spacing:.09em;text-transform:uppercase;margin-bottom:14px}
html[lang="zh-Hans"] .site-foot h4{letter-spacing:.03em;text-transform:none}
.site-foot a{color:#b8c9da;display:block;padding:4px 0}
.site-foot a:hover{color:#fff}
.site-foot .brand{color:#fff;margin-bottom:14px}
.foot-about{max-width:34ch;color:#8298ae}
.foot-bottom{
  border-top:1px solid rgba(255,255,255,.1);margin-top:40px;padding-top:22px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;color:#7b90a6;font-size:.87rem;
}
.foot-bottom a{display:inline;color:#93a8bd}
.abuse-line{font-family:var(--mono);font-size:.88rem}

/* utils */
.mt0{margin-top:0}.mb0{margin-bottom:0}
.center{text-align:center}
.pad-b{padding-bottom:76px}