:root{
  --bg:#ffffff;
  --bg2:#f6f7fb;
  --text:#0f172a;
  --muted:#64748b;
  --line:#e5e7eb;
  --brand:#2563eb;
  --brand2:#0ea5e9;
  --soft:#eef2ff;
  --warn:#b45309;
  --shadow: 0 10px 30px rgba(2,6,23,.08);
  --radius: 16px;
}

*{ box-sizing:border-box; }
html,body{ margin:0; padding:0; color:var(--text); background:var(--bg); font-family: -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif; }
a{ color:var(--brand); text-decoration:none; }
a:hover{ text-decoration:underline; }

.container{ width:min(1100px, calc(100% - 32px)); margin:0 auto; }

.badge{
  display:inline-flex; align-items:center; gap:6px;
  padding:2px 10px; border-radius:999px;
  background:var(--soft); color:var(--brand); font-weight:600; font-size:12px;
}

.dot{ display:inline-block; width:8px; height:8px; border-radius:999px; background:var(--brand2); margin-right:8px; }

.topbar{ background:var(--bg2); border-bottom:1px solid var(--line); }
.topbar__inner{ display:flex; align-items:center; justify-content:space-between; gap:12px; padding:10px 0; }
.topbar__text{ font-size:13px; color:var(--muted); }
.topbar__close{ border:1px solid var(--line); background:#fff; border-radius:10px; width:34px; height:34px; cursor:pointer; }
.topbar__close:hover{ background:var(--bg2); }

.header{ position:sticky; top:0; z-index:30; background:rgba(255,255,255,.9); backdrop-filter:saturate(180%) blur(10px); border-bottom:1px solid var(--line); }
.header__inner{ display:flex; align-items:center; justify-content:space-between; padding:14px 0; gap:16px; }

.brand{ display:flex; align-items:center; gap:10px; min-width:220px; }
.brand__logo{
  width:40px; height:40px; border-radius:12px;
  display:grid; place-items:center;
  background:linear-gradient(135deg, var(--brand), var(--brand2));
  color:#fff; font-weight:800;
}
.brand__name{ font-weight:800; color:var(--text); }
.brand__sub{ font-size:12px; color:var(--muted); margin-left:6px; }

.nav__toggle{ display:none; border:1px solid var(--line); background:#fff; border-radius:12px; padding:10px; cursor:pointer; }
.nav__toggle span{ display:block; width:22px; height:2px; background:var(--text); margin:4px 0; border-radius:99px; }
.nav__list{ display:flex; list-style:none; gap:14px; margin:0; padding:0; align-items:center; }
.nav__link{ display:inline-flex; padding:8px 10px; border-radius:12px; color:var(--text); font-weight:600; font-size:14px; }
.nav__link:hover{ background:var(--bg2); text-decoration:none; }
.nav__link--cta{ background:var(--brand); color:#fff; }
.nav__link--cta:hover{ background:#1d4ed8; }

.hero{ padding:40px 0 26px; background:linear-gradient(180deg, var(--bg2), #fff); border-bottom:1px solid var(--line); }
.hero__inner{ display:grid; grid-template-columns: 1.3fr .7fr; gap:20px; align-items:start; }
.hero__content h1{ margin:0 0 10px; font-size:34px; letter-spacing:-.02em; }
.hero__subtitle{ margin:0 0 16px; color:var(--muted); line-height:1.8; }
.hero__highlights{ display:grid; grid-template-columns:repeat(3,1fr); gap:12px; margin:14px 0 18px; }
.highlight{ background:#fff; border:1px solid var(--line); border-radius:var(--radius); padding:14px; box-shadow: 0 1px 0 rgba(2,6,23,.02); }
.highlight__title{ font-weight:800; margin-bottom:6px; }
.highlight__desc{ color:var(--muted); font-size:13px; line-height:1.6; }

.hero__actions{ display:flex; gap:10px; flex-wrap:wrap; margin:6px 0 10px; }
.btn{
  display:inline-flex; align-items:center; justify-content:center;
  padding:10px 14px; border-radius:14px; font-weight:700; border:1px solid transparent;
  cursor:pointer; text-decoration:none;
}
.btn--primary{ background:var(--brand); color:#fff; }
.btn--primary:hover{ background:#1d4ed8; text-decoration:none; }
.btn--ghost{ background:#fff; border-color:var(--line); color:var(--text); }
.btn--ghost:hover{ background:var(--bg2); text-decoration:none; }
.btn--soft{ background:var(--soft); color:var(--brand); border-color:transparent; }
.btn--soft:hover{ background:#e0e7ff; text-decoration:none; }
.btn--small{ padding:8px 12px; border-radius:12px; font-size:13px; }

.hero__trust{ margin-top:12px; color:var(--muted); font-size:13px; }

.hero__aside{ display:flex; flex-direction:column; gap:12px; }
.asideCard{ background:#fff; border:1px solid var(--line); border-radius:var(--radius); padding:14px; box-shadow: var(--shadow); }
.asideCard__title{ font-weight:900; margin-bottom:8px; }
.asideCard__note{ margin:10px 0; color:var(--muted); font-size:13px; line-height:1.6; }
.miniSteps{ margin:0; padding-left:18px; color:var(--text); }
.miniSteps li{ margin:8px 0; }
.tagList{ list-style:none; margin:0; padding:0; display:flex; flex-wrap:wrap; gap:8px; }
.tagList a{ display:inline-flex; padding:7px 10px; border-radius:999px; background:var(--bg2); border:1px solid var(--line); color:var(--text); font-weight:600; font-size:13px; }
.tagList a:hover{ background:#fff; text-decoration:none; }

.section{ padding:36px 0; }
.section--alt{ background:var(--bg2); border-top:1px solid var(--line); border-bottom:1px solid var(--line); }
.section__head h2{ margin:0 0 10px; font-size:26px; }
.section__desc{ margin:0; color:var(--muted); line-height:1.9; }

.grid{ display:grid; gap:12px; margin-top:16px; }
.grid--2{ grid-template-columns:repeat(2,1fr); }
.grid--3{ grid-template-columns:repeat(3,1fr); }
.grid--4{ grid-template-columns:repeat(4,1fr); }

.card{
  background:#fff; border:1px solid var(--line); border-radius:var(--radius);
  padding:16px; box-shadow: 0 1px 0 rgba(2,6,23,.02);
}
.card h3{ margin:0 0 10px; font-size:16px; }
.card p{ margin:0; color:var(--muted); line-height:1.8; }

.feature{
  background:#fff; border:1px solid var(--line); border-radius:var(--radius);
  padding:16px;
}
.feature__icon{ font-size:22px; }
.feature h3{ margin:10px 0 8px; font-size:16px; }
.feature p{ margin:0; color:var(--muted); line-height:1.8; font-size:14px; }

.list{ margin:0; padding-left:18px; color:var(--muted); line-height:1.9; }
.list li{ margin:6px 0; }

.split{ display:grid; grid-template-columns:1.2fr .8fr; gap:12px; margin-top:16px; }
.callout{
  background:#fff; border:1px solid var(--line); border-radius:var(--radius);
  padding:16px; box-shadow: var(--shadow);
}
.callout__title{ font-weight:900; margin-bottom:6px; }
.callout__desc{ margin:0 0 12px; color:var(--muted); line-height:1.8; }
.callout__actions{ display:flex; gap:10px; flex-wrap:wrap; }

.callout--warn{ border-color: #fde68a; background:#fffbeb; }
.callout--warn .callout__title{ color:var(--warn); }

.note{
  margin-top:14px; padding:12px 14px; border-radius:14px;
  background:#fff; border:1px dashed var(--line); color:var(--muted); line-height:1.8;
}

.steps{ list-style:none; margin:16px 0 0; padding:0; display:flex; flex-direction:column; gap:10px; }
.step{
  display:flex; gap:12px; background:#fff; border:1px solid var(--line);
  border-radius:var(--radius); padding:14px;
}
.step__index{
  width:34px; height:34px; border-radius:12px;
  background:var(--soft); color:var(--brand);
  display:grid; place-items:center; font-weight:900;
}
.step__title{ font-weight:900; margin-bottom:6px; }
.step__desc{ color:var(--muted); line-height:1.9; }
.step__tips{ margin-top:8px; font-size:13px; color:var(--muted); }

.check{ list-style:none; margin:0; padding:0; display:flex; flex-direction:column; gap:10px; }
.check li{ display:flex; align-items:flex-start; gap:10px; color:var(--muted); line-height:1.6; }
.check input{ margin-top:3px; width:16px; height:16px; }

.faq{ margin-top:16px; display:flex; flex-direction:column; gap:10px; }
.faq__item{
  background:#fff; border:1px solid var(--line); border-radius:var(--radius);
  padding:10px 14px;
}
.faq__q{ cursor:pointer; font-weight:900; }
.faq__a{ margin-top:10px; color:var(--muted); line-height:1.9; }

.postGrid{ display:grid; grid-template-columns:repeat(3,1fr); gap:12px; margin-top:16px; }
.postCard{
  background:#fff; border:1px solid var(--line); border-radius:var(--radius);
  padding:16px;
}
.postCard h3{ margin:0 0 10px; font-size:16px; line-height:1.5; }
.postCard p{ margin:0 0 10px; color:var(--muted); line-height:1.8; }
.meta{ font-size:12px; color:var(--muted); background:var(--bg2); border:1px solid var(--line); display:inline-flex; padding:4px 8px; border-radius:999px; }

.contact{ display:grid; grid-template-columns: 1.1fr .9fr; gap:12px; margin-top:16px; }
.form{ background:#fff; border:1px solid var(--line); border-radius:var(--radius); padding:16px; }
.form__row{ display:flex; flex-direction:column; gap:6px; margin-bottom:12px; }
.form__label{ font-weight:800; font-size:13px; }
.form__control{
  border:1px solid var(--line); border-radius:14px; padding:10px 12px;
  font-size:14px; outline:none; background:#fff;
}
.form__control:focus{ border-color:#93c5fd; box-shadow: 0 0 0 4px rgba(59,130,246,.15); }
.form__actions{ display:flex; gap:10px; flex-wrap:wrap; margin-top:6px; }
.form__hint{ margin-top:10px; font-size:12px; color:var(--muted); line-height:1.7; }

.aside__card{ background:#fff; border:1px solid var(--line); border-radius:var(--radius); padding:16px; box-shadow: var(--shadow); margin-bottom:12px; }
.muted{ color:var(--muted); }

.footer{ border-top:1px solid var(--line); padding:26px 0 18px; background:#fff; }
.footer__inner{ display:grid; grid-template-columns:1.2fr .8fr; gap:12px; align-items:start; }
.footer__cols{ display:grid; grid-template-columns:repeat(3,1fr); gap:12px; }
.footer__title{ font-weight:900; margin-bottom:10px; }
.footer__col a{ display:block; color:var(--muted); padding:4px 0; }
.footer__col a:hover{ color:var(--text); text-decoration:none; }
.footer__bottom{ display:flex; justify-content:space-between; gap:10px; margin-top:14px; color:var(--muted); font-size:13px; }

.toast{
  position:fixed; right:18px; bottom:18px; z-index:50;
  background:rgba(15,23,42,.92); color:#fff;
  padding:12px 14px; border-radius:14px; box-shadow: var(--shadow);
  opacity:0; transform: translateY(8px);
  transition: all .2s ease;
  max-width:min(420px, calc(100% - 36px));
}
.toast.show{ opacity:1; transform: translateY(0); }

@media (max-width: 980px){
  .hero__inner{ grid-template-columns:1fr; }
  .hero__highlights{ grid-template-columns:1fr; }
  .grid--4{ grid-template-columns:repeat(2,1fr); }
  .grid--3{ grid-template-columns:repeat(2,1fr); }
  .postGrid{ grid-template-columns:repeat(2,1fr); }
  .split{ grid-template-columns:1fr; }
  .contact{ grid-template-columns:1fr; }
  .footer__inner{ grid-template-columns:1fr; }
}

@media (max-width: 640px){
  .nav__toggle{ display:inline-flex; }
  .nav__list{
    display:none; position:absolute; right:16px; top:64px; background:#fff;
    border:1px solid var(--line); border-radius:16px; padding:10px; flex-direction:column; min-width:200px;
    box-shadow: var(--shadow);
  }
  .nav__list.open{ display:flex; }
  .grid--3, .grid--2{ grid-template-columns:1fr; }
  .grid--4{ grid-template-columns:1fr; }
  .postGrid{ grid-template-columns:1fr; }
}