:root {
  --ink: #07182f;
  --text: #26384e;
  --muted: #607188;
  --blue: #1254c8;
  --blue-dark: #0f3f93;
  --line: #d8e4ef;
  --soft: #f4f8fc;
  --white: #fff;
  --shadow: 0 24px 70px rgba(18, 84, 200, .13);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  color: var(--ink);
  background: #fff;
  line-height: 1.65;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
svg { display: block; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255,255,255,.95);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(16px);
}
.nav {
  width: min(1200px, calc(100% - 48px));
  height: 78px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 36px;
}
.brand {
  min-width: 190px;
  display: grid;
  gap: 1px;
}
.brand strong {
  font-size: 22px;
  color: #123b72;
  letter-spacing: 0;
}
.brand span {
  font-size: 12px;
  color: var(--muted);
}
.nav-links {
  flex: 1;
  display: flex;
  justify-content: center;
  gap: 34px;
  font-size: 15px;
  font-weight: 700;
}
.nav-links a {
  padding: 26px 0 23px;
  border-bottom: 3px solid transparent;
}
.nav-links a.active,
.nav-links a:hover {
  color: var(--blue);
  border-bottom-color: var(--blue);
}
.nav-search {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  color: var(--ink);
}
.menu-button { display: none; }

.hero {
  min-height: 540px;
  background:
    linear-gradient(90deg, rgba(255,255,255,.98) 0%, rgba(255,255,255,.93) 38%, rgba(255,255,255,.58) 54%, rgba(255,255,255,.1) 100%),
    url("../img/hero-study.png");
  background-size: cover;
  background-position: center right;
  border-bottom: 1px solid var(--line);
}
.hero-inner {
  width: min(1200px, calc(100% - 48px));
  min-height: 540px;
  margin: 0 auto;
  display: flex;
  align-items: center;
}
.hero-copy {
  width: min(620px, 100%);
  min-width: 0;
  padding: 42px 0;
}
h1 {
  margin: 0;
  font-size: clamp(42px, 5vw, 64px);
  line-height: 1.13;
  letter-spacing: 0;
}
.hero-copy p {
  max-width: 560px;
  margin: 22px 0 0;
  font-size: 17px;
  color: #32445c;
}
.hero-search {
  width: min(530px, 100%);
  margin-top: 28px;
  display: grid;
  grid-template-columns: 1fr 58px;
  border: 1px solid #c8d8e8;
  border-radius: 4px;
  overflow: hidden;
  background: #fff;
  box-shadow: 0 18px 40px rgba(18,84,200,.08);
}
.hero-search input {
  min-width: 0;
  height: 56px;
  border: 0;
  outline: 0;
  padding: 0 18px;
  font: inherit;
  color: var(--ink);
}
.hero-search button {
  border: 0;
  background: var(--blue);
  color: #fff;
  display: grid;
  place-items: center;
  cursor: pointer;
}
.hero-actions {
  display: flex;
  gap: 18px;
  margin-top: 28px;
}
.btn {
  min-width: 168px;
  height: 54px;
  border-radius: 4px;
  border: 1px solid var(--blue);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--blue);
  font-weight: 800;
}
.btn.primary {
  background: var(--blue);
  color: #fff;
}

.section {
  width: min(1200px, calc(100% - 48px));
  margin: 0 auto;
  padding: 52px 0;
  border-bottom: 1px solid var(--line);
}
.section:last-of-type { border-bottom: 0; }
.section-head {
  margin-bottom: 24px;
}
.section-head h2 {
  margin: 0;
  font-size: 30px;
  line-height: 1.18;
}
.section-head p {
  margin: 8px 0 0;
  color: var(--muted);
}

.quick-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 0;
}
.quick-item,
.step-item,
.resource-item {
  min-height: 118px;
  padding: 20px 16px;
  display: grid;
  justify-items: center;
  align-content: center;
  gap: 8px;
  text-align: center;
  border-right: 1px solid var(--line);
}
.quick-item:last-child,
.step-item:last-child,
.resource-item:last-child {
  border-right: 0;
}
.quick-item svg,
.step-item svg,
.resource-item svg {
  width: 36px;
  height: 36px;
  color: var(--blue);
}
.quick-item strong,
.step-item strong,
.resource-item strong {
  font-size: 16px;
}
.quick-item span,
.step-item span,
.resource-item span {
  color: var(--muted);
  font-size: 13px;
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  border-top: 1px solid var(--line);
}
.step-item {
  min-height: 150px;
}

.compare-table {
  width: 100%;
  border-collapse: collapse;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: #fff;
}
.compare-table th {
  background: #edf3fb;
  color: #123b72;
  font-size: 15px;
  text-align: left;
  padding: 12px 18px;
  border-right: 1px solid var(--line);
}
.compare-table td {
  padding: 12px 18px;
  color: #33465c;
  border-top: 1px solid var(--line);
  border-right: 1px solid var(--line);
}
.compare-table td:last-child,
.compare-table th:last-child {
  border-right: 0;
}
.table-link,
.center-link {
  display: block;
  margin-top: 18px;
  text-align: center;
  color: var(--blue);
  font-weight: 800;
}

.city-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 420px;
  gap: 42px;
  align-items: center;
}
.city-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
}
.city-card {
  min-height: 86px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: linear-gradient(180deg, #fff, #f8fbff);
  display: grid;
  place-items: center;
  color: var(--blue-dark);
  font-weight: 800;
}
.map-visual {
  min-height: 310px;
  background:
    linear-gradient(135deg, rgba(255,255,255,.86), rgba(239,246,251,.96)),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='520' height='360' viewBox='0 0 520 360'%3E%3Cpath d='M76 205 C110 95 205 78 270 112 C320 140 400 120 450 195 C418 258 352 277 276 260 C202 246 144 292 76 205Z' fill='%23dfeaf2' stroke='%23c9dbe6' stroke-width='3'/%3E%3Cg fill='%231254c8'%3E%3Ccircle cx='180' cy='178' r='7'/%3E%3Ccircle cx='238' cy='150' r='7'/%3E%3Ccircle cx='298' cy='198' r='7'/%3E%3Ccircle cx='352' cy='174' r='7'/%3E%3Ccircle cx='388' cy='224' r='7'/%3E%3Ccircle cx='250' cy='234' r='7'/%3E%3C/g%3E%3C/svg%3E");
  background-size: contain;
  background-position: center;
  background-repeat: no-repeat;
}

.resource-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
}

.faq-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px 32px;
}
details {
  border: 1px solid var(--line);
  border-radius: 4px;
  background: #fff;
  padding: 0 18px;
}
summary {
  padding: 15px 0;
  cursor: pointer;
  font-weight: 800;
  list-style: none;
}
details p {
  margin: 0;
  padding: 0 0 16px;
  color: var(--muted);
}

.site-footer {
  background: #071f3e;
  color: rgba(255,255,255,.78);
  margin-top: 20px;
}
.footer-inner {
  width: min(1200px, calc(100% - 48px));
  margin: 0 auto;
  padding: 42px 0;
  display: grid;
  grid-template-columns: 1.1fr .8fr .8fr 1.1fr;
  gap: 36px;
}
.site-footer strong {
  display: block;
  color: #fff;
  font-size: 20px;
  margin-bottom: 10px;
}
.site-footer a {
  display: block;
  margin: 6px 0;
}
.disclaimer {
  border: 1px solid rgba(255,255,255,.45);
  border-radius: 6px;
  padding: 18px;
}
.copyright {
  width: min(1200px, calc(100% - 48px));
  margin: 0 auto;
  padding: 0 0 22px;
  font-size: 12px;
  color: rgba(255,255,255,.58);
}

@media (max-width: 980px) {
  .nav { width: calc(100% - 28px); }
  .nav-links, .nav-search { display: none; }
  .menu-button {
    display: grid;
    margin-left: auto;
    border: 0;
    background: #edf4fb;
    color: var(--blue);
    border-radius: 4px;
    width: 42px;
    height: 42px;
    place-items: center;
  }
  .hero {
    background:
      linear-gradient(180deg, rgba(255,255,255,.98), rgba(255,255,255,.72)),
      url("../img/hero-study.png");
    background-size: cover;
    background-position: center bottom;
  }
  .hero-inner {
    width: calc(100% - 28px);
    min-height: 680px;
    align-items: flex-start;
    padding-top: 54px;
  }
  .section {
    width: calc(100% - 28px);
  }
  .quick-grid,
  .steps-grid,
  .resource-grid,
  .faq-grid {
    grid-template-columns: 1fr 1fr;
  }
  .city-layout {
    grid-template-columns: 1fr;
  }
  .city-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-inner {
    width: calc(100% - 28px);
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 640px) {
  html,
  body,
  main {
    width: 100%;
    max-width: 100%;
    overflow-x: hidden;
  }
  h1 {
    font-size: 34px;
    word-break: break-all;
  }
  .nav {
    height: 64px;
    gap: 12px;
  }
  .brand {
    min-width: 0;
  }
  .brand strong { font-size: 18px; }
  .brand span { display: none; }
  .hero {
    min-height: 630px;
    background:
      linear-gradient(180deg, rgba(255,255,255,.98) 0%, rgba(255,255,255,.88) 44%, rgba(255,255,255,.42) 100%),
      url("../img/hero-study.png");
    background-size: cover;
    background-position: center bottom;
  }
  .hero-inner {
    min-height: 630px;
    padding-top: 50px;
  }
  .hero-copy p {
    font-size: 15px;
    line-height: 1.75;
    word-break: break-all;
    overflow-wrap: anywhere;
  }
  .hero-copy,
  .hero-copy p,
  .hero-search,
  .hero-actions {
    width: 100%;
    max-width: 100%;
  }
  .hero-search {
    grid-template-columns: 1fr 54px;
  }
  .hero-search input {
    width: 100%;
    min-width: 0;
  }
  .hero-search button { height: 56px; }
  .hero-actions { display: grid; }
  .btn { width: 100%; }
  .quick-grid,
  .steps-grid,
  .resource-grid,
  .faq-grid,
  .footer-inner {
    grid-template-columns: 1fr;
  }
  .quick-item,
  .step-item,
  .resource-item {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }
  .compare-table {
    font-size: 13px;
  }
  .compare-table th,
  .compare-table td {
    padding: 10px;
  }
}

.lead-lock{overflow:hidden}.lead-modal{position:fixed;inset:0;z-index:100;display:none}.lead-modal.is-open{display:block}.lead-backdrop{position:absolute;inset:0;background:rgba(7,24,47,.52);backdrop-filter:blur(6px)}.lead-dialog{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:min(920px,calc(100% - 32px));max-height:calc(100vh - 36px);overflow:auto;background:#fff;border-radius:8px;box-shadow:0 32px 90px rgba(7,24,47,.28);display:grid;grid-template-columns:.9fr 1.1fr;text-align:left}.lead-close{position:absolute;right:16px;top:14px;width:36px;height:36px;border:0;border-radius:50%;background:#eef4fb;color:#123b72;font-size:24px;line-height:1;cursor:pointer}.lead-copy{padding:42px;background:linear-gradient(145deg,#071f3e,#1254c8);color:#fff;display:flex;flex-direction:column;justify-content:center}.lead-copy span{font-size:14px;font-weight:900;color:#b8d7ff}.lead-copy h2{margin:12px 0 14px;font-size:38px;line-height:1.12}.lead-copy p{margin:0;color:rgba(255,255,255,.8)}.lead-form{padding:42px;display:grid;grid-template-columns:1fr 1fr;gap:16px}.lead-form label{display:grid;gap:8px;font-weight:900;color:#123b72;font-size:14px}.lead-form input,.lead-form select{width:100%;height:48px;border:1px solid var(--line);border-radius:4px;padding:0 12px;font:inherit;color:var(--ink);background:#fff}.lead-form input:focus,.lead-form select:focus{outline:2px solid rgba(18,84,200,.18);border-color:var(--blue)}.lead-consent{grid-column:1/-1;display:flex!important;grid-template-columns:none!important;flex-direction:row;align-items:flex-start;gap:10px!important;color:#50647a!important;font-weight:700!important;line-height:1.5}.lead-consent input{width:16px;height:16px;margin-top:4px;flex:none}.lead-submit{grid-column:1/-1;height:52px;border:0;border-radius:4px;background:var(--blue);color:#fff;font-weight:900;font-size:16px;cursor:pointer}.lead-hint{grid-column:1/-1;margin:0;color:var(--muted);font-size:13px}.lead-hint.is-error{color:#c62828}.lead-hint.is-success{color:#16805b}.lead-float{position:fixed;right:22px;bottom:24px;z-index:60;height:46px;padding:0 18px;border:0;border-radius:999px;background:var(--blue);color:#fff;font-weight:900;box-shadow:0 14px 38px rgba(18,84,200,.32);cursor:pointer}@media(max-width:760px){.lead-dialog{grid-template-columns:1fr}.lead-copy{padding:30px 24px}.lead-copy h2{font-size:30px}.lead-form{padding:24px;grid-template-columns:1fr}.lead-float{right:14px;bottom:14px}}
.lead-dialog>*{min-width:0}.lead-copy,.lead-form,.lead-form label{min-width:0}.lead-copy h2,.lead-copy p,.lead-consent,.lead-hint{overflow-wrap:anywhere}@media(max-width:760px){.lead-dialog{left:14px;right:14px;width:auto;transform:translateY(-50%)}.lead-close{right:10px;top:10px}.lead-consent{font-size:13px!important}}@media(max-width:760px){.lead-dialog{left:14px!important;right:auto!important;width:calc(100vw - 28px)!important;max-width:calc(100vw - 28px)!important;transform:translateY(-50%)!important;overflow:hidden}.lead-copy,.lead-form{width:100%;max-width:100%;box-sizing:border-box}.lead-form input,.lead-form select,.lead-submit{max-width:100%;min-width:0}.lead-consent{display:grid!important;grid-template-columns:16px minmax(0,1fr)!important;align-items:start!important}.lead-consent input{grid-column:1}.lead-consent{word-break:break-all}}@media(max-width:760px){.lead-dialog{left:50%!important;right:auto!important;width:min(320px,calc(100vw - 28px))!important;max-width:calc(100vw - 28px)!important;transform:translate(-50%,-50%)!important}.lead-copy{padding:24px 20px}.lead-form{padding:20px}.lead-copy h2{font-size:28px}.lead-copy p{font-size:14px}.lead-form label{font-size:13px}.lead-form input,.lead-form select{height:46px}.lead-submit{height:50px}}@media(max-width:760px){.lead-dialog{width:min(280px,calc(100vw - 28px))!important}.lead-copy{padding:22px 18px}.lead-form{padding:18px}.lead-copy h2{font-size:25px}.lead-copy p{font-size:13px}.lead-submit{font-size:15px}}