:root {
  --primary: #b8002c;
  --primary-dark: #8f0022;
  --primary-light: #fff0f4;
  --blue: #4aa5ea;
  --blue-deep: #1474b8;
  --ink: #172033;
  --muted: #667085;
  --line: #e9edf3;
  --bg: #f5f7fb;
  --card: #ffffff;
  --success: #167c4b;
  --shadow: 0 18px 45px rgba(24, 38, 64, 0.10);
  --radius: 22px;
  --max: 1180px;
}

main *, main *::before, main *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--bg) !important;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

main {
  font-size: 16px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
}

main a { color: inherit; text-decoration: none; }
main button, main input, main select, main textarea { font: inherit; }
main p, main td { font-size: inherit; line-height: inherit; }
main ul, main ol { list-style: initial; margin: initial; padding: initial; }
main li { list-style: initial; }
main img { border: 0; max-width: 100%; height: auto; }
#top img { max-width: none; height: auto; border: 0; }

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

.hero {
  position: relative;
  overflow: hidden;
  padding: 62px 0 72px;
  background:
    radial-gradient(circle at 18% 20%, rgba(85, 177, 239, 0.30), transparent 30%),
    radial-gradient(circle at 78% 10%, rgba(255,255,255,.95), transparent 30%),
    linear-gradient(135deg, #eaf6ff 0%, #f6fbff 44%, #f8fbff 100%);
  border-bottom: 1px solid #e5edf5;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  opacity: .45;
  background-image:
    repeating-radial-gradient(ellipse at 82% 20%, transparent 0 16px, rgba(65, 153, 218, .18) 17px 19px, transparent 20px 34px);
  pointer-events: none;
  transform: rotate(-7deg) scale(1.1);
}

.hero-inner { position: relative; z-index: 2; }

.breadcrumb {
  font-size: 13px;
  color: #6f7b8e;
  margin-bottom: 18px;
}

.hero-copy { max-width: 860px; }

h1 {
  margin: 0;
  font-size: clamp(34px, 5vw, 58px);
  line-height: 1.18;
  letter-spacing: -0.02em;
}

.hero-subtitle {
  max-width: 790px;
  margin: 18px 0 28px;
  color: #475467;
  font-size: 17px;
}

.search-panel {
  max-width: 1180px;
  margin: 0 auto;
  padding: 25px;
  border-radius: 24px;
  background: rgba(255,255,255,.96);
  box-shadow: var(--shadow);
  border: 1px solid rgba(255,255,255,.8);
}

.search-topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 14px;
  color: #4b5565;
  font-size: 13px;
}

.search-tabs {
  display: flex;
  gap: 12px;
  font-weight: 700;
}

.search-tabs a {
  color: var(--blue-deep) !important;
}

.search-tabs a:hover { color: var(--primary); }

.highlight {
  color: var(--primary);
  font-size: 24px;
  font-weight: 900;
  letter-spacing: .06em;
}

.domain-form {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
  align-items: stretch;
}

.domain-field {
  display: flex;
  align-items: center;
  background: #fff;
  border: 1px solid #d8dee8;
  border-radius: 999px;
  overflow: hidden;
  min-height: 58px;
}

.domain-field:focus-within {
  border-color: #7fbee8;
  box-shadow: 0 0 0 4px rgba(74, 165, 234, 0.13);
}

.domain-field input {
  flex: 1;
  min-width: 0;
  border: 0;
  outline: 0;
  padding: 0 20px;
  color: #101828;
  background: transparent;
}

.suffix {
  padding: 0 19px 0 10px;
  font-weight: 800;
  color: #344054;
}

.btn {
  border: 0;
  cursor: pointer;
  border-radius: 999px;
  padding: 11px 20px;
  font-weight: 700;
  transition: .2s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.btn:hover { transform: translateY(-1px); }

.btn-primary {
  color: #fff;
  background: var(--primary);
  box-shadow: 0 10px 24px rgba(184, 0, 44, 0.22);
}

.btn-primary:hover { background: var(--primary-dark); }

.domain-submit { min-width: 152px; border-radius: 999px; }

.search-meta {
  margin-top: 13px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap;
  font-size: 13px;
  color: #667085;
}

.price strong { color: var(--primary); font-size: 22px; }
.price del { color: #98a2b3; margin-left: 7px; }
.query-note { color: #07C160; font-weight: 700; }

.query-result {
  display: none;
  margin-top: 16px;
  border-radius: 14px;
  padding: 14px 16px;
  background: #f0fdf4;
  color: #166534;
  border: 1px solid #bbf7d0;
  font-size: 14px;
}

.trust-strip {
  margin-top: 22px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.trust-item {
  min-height: 78px;
  padding: 15px;
  border-radius: 16px;
  background: rgba(255,255,255,.76);
  border: 1px solid rgba(216, 226, 236, .9);
  display: flex;
  align-items: center;
  gap: 12px;
}

.trust-icon {
  width: 38px;
  height: 38px;
  flex: 0 0 38px;
  border-radius: 12px  !important;
  display: grid;
  place-items: center;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 16px;
  font-weight: 900 !important;
}

.trust-item strong { display: block; font-size: 14px; }
.trust-item span { display: block; color: var(--muted); font-size: 12px; }

section { padding: 72px 0; }

.section-head {
  max-width: 760px;
  margin: 0 auto 34px;
  text-align: center;
}

.eyebrow {
  color: var(--primary);
  font-weight: 800 !important;
  font-size: 13px;
  letter-spacing: .06em;
  text-transform: uppercase;
}

h2 { margin: 8px 0 12px; font-size: clamp(28px, 4vw, 42px); line-height: 1.25; }
.section-desc { color: var(--muted); margin: 0; }

.info-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.8fr) minmax(280px, .8fr);
  gap: 22px;
  align-items: stretch;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 12px 30px rgba(29, 41, 57, .05);
}

.check-card { padding: 30px; }
.check-card h3, .domain-info h3 { margin-top: 0; font-size: 23px; }
.check-card p { font-size: 16px; }

.check-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 22px;
}

.check-item {
  border: 1px solid #e8edf4;
  border-radius: 16px;
  padding: 16px;
  background: #fbfcfe;
}

.check-item span { color: var(--muted); font-size: 13px; }
.check-item strong { display: block; margin-top: 4px; font-size: 17px; }

.domain-info {
  padding: 20px;
  background: linear-gradient(180deg, #ffffff, #fbfbfd);
}

.domain-info dl { margin: 0; }

.domain-info .row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 18px;
  padding: 14px 0;
  border-bottom: 1px dashed #e1e6ee;
}

.domain-info .row:last-child { border-bottom: 0; }
dt { color: #667085; font-size: 13px; }
dd { margin: 0; font-weight: 900 !important; text-align: right; }
.red { color: var(--primary); }

.notice {
  margin-top: 22px;
  padding: 16px 18px;
  border-radius: 15px;
  background: #fff8e8;
  border: 1px solid #f5df9a;
  color: #7a5a09;
  font-size: 14px;
}

.why { background: #fff; }

.why-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.why-card { padding: 26px 22px; min-height: 230px; }

.why-card .num {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  background: var(--primary-light);
  color: var(--primary);
  font-weight: 900 !important;
  margin-bottom: 18px;
}

.why-card h3 { margin: 0 0 10px; font-size: 19px; font-weight: 800 !important; }
.why-card p { margin: 0; color: var(--muted); font-size: 14px; }

.center-cta { margin-top: 28px; text-align: center; }

.use-cases {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.use-card {
  overflow: hidden;
  min-height: 260px;
  display: grid;
  grid-template-columns: 160px 1fr;
}

.use-visual {
  display: grid;
  place-items: center;
  font-size: 74px;
  background:
    radial-gradient(circle at center, rgba(74,165,234,.24), transparent 60%),
    #f4f9fd;
}

.use-content { padding: 27px 25px; }
.use-content h3 { margin: 0 0 10px; font-size: 21px; }
.use-content p { color: var(--muted); margin: 0 0 13px; font-size: 14px; }
.mini-list { margin: 0; padding-left: 18px; color: #475467; font-size: 16px; }

.risk-box {
  margin-top: 22px;
  padding: 22px 24px;
  border-radius: 18px;
  background: #fff;
  border-left: 4px solid #f59e0b;
  box-shadow: 0 10px 25px rgba(17,24,39,.04);
}

.risk-box strong { display: block; margin-bottom: 7px; }

.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.article-card { overflow: hidden; }

.article-cover {
  height: 138px;
  display: grid;
  place-items: center;
  background:
    linear-gradient(135deg, rgba(74,165,234,.22), rgba(184,0,44,.10)),
    #edf6fd;
  font-size: 48px;
}

.article-body { padding: 20px; }
.article-body h3 { margin: 0 0 8px; font-size: 18px; line-height: 1.45; }
.article-body p { margin: 0; color: var(--muted); font-size: 13px; }
.article-link { display: inline-block; margin-top: 13px; color: var(--primary); font-weight: 800; font-size: 13px; }

.final-cta { padding-top: 20px; padding-bottom: 0; }

.cta-box {
  padding: 34px;
  border-radius: 28px 28px 0 0;
  color: #fff;
  text-align: center;
  background:
    radial-gradient(circle at 20% 20%, rgba(255,255,255,.18), transparent 28%),
    linear-gradient(135deg, #ba002d, #8f0022);
}

.cta-box h2 { margin-top: 0; color: #fff; }
.cta-box p { margin: 0 auto 20px; max-width: 680px; color: rgba(255,255,255,.84); }
.cta-box .btn { background: #fff; color: var(--primary); box-shadow: 0 12px 24px rgba(0,0,0,.15); }

.registration-info-layout {
  grid-template-columns: minmax(0, 1.8fr) minmax(280px, .8fr);
  align-items: start;
}

.registration-info-layout .domain-info { height: 100%; }

@media (max-width: 980px) and (min-width: 721px) {
  .registration-info-layout {
    grid-template-columns: minmax(0, 1.55fr) minmax(250px, .75fr);
    gap: 18px;
  }
  .registration-info-layout .check-card,
  .registration-info-layout .domain-info { padding: 24px; }
}

.domain-news-section { background: #eef1f5; }

.domain-news-list { padding: 28px 34px; border-radius: 28px; }

.domain-news-item {
  display: grid;
  grid-template-columns: 210px minmax(0, 1fr);
  gap: 28px;
  align-items: center;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

.domain-news-item:first-child { padding-top: 4px; }
.domain-news-item:last-child { padding-bottom: 4px; border-bottom: 0; }

.domain-news-thumb {
  height: 118px;
  border-radius: 4px;
  overflow: hidden;
  display: grid;
  place-items: center;
  position: relative;
  background:
    radial-gradient(circle at 20% 20%, rgba(255,255,255,.9), transparent 34%),
    linear-gradient(135deg, #dff2ff 0%, #eef8ff 50%, #fff0f4 100%);
  border: 1px solid #dce5ee;
}

.domain-news-thumb::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: .45;
  background-image:
    repeating-radial-gradient(
      ellipse at 82% 20%,
      transparent 0 12px,
      rgba(65,153,218,.16) 13px 15px,
      transparent 16px 28px
    );
}

.domain-news-thumb span {
  position: relative;
  z-index: 1;
  color: var(--primary);
  font-size: 28px;
  font-weight: 900;
  letter-spacing: .02em;
}
.domain-news-thumb img {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 4px;
}

.domain-news-content h3 { margin: 0 0 8px; font-size: 18px; line-height: 1.5; }
.domain-news-content h3 a:hover { color: var(--primary); }
.domain-news-content p { margin: 0 0 8px; color: #475467; font-size: 14px; line-height: 1.8; }
.domain-news-date { color: #8791a2; font-size: 13px; }
.domain-news-more { margin-top: 24px; text-align: right; }

.availability-note { margin-top: 10px; color: #7a5a09; font-size: 12px; line-height: 1.6; }

.qualification-section {
  padding: 42px 0 30px;
  background: #eef1f5;
}

.qualification-title {
  margin: 0 0 24px;
  text-align: center;
  font-size: 28px;
  color: var(--ink);
}

.qualification-panel {
  width: 100%;
  overflow: hidden;
  text-align: center;
}

.qualification-panel img {
  display: block;
  width: 100%;
  height: auto;
  margin: 0 auto;
}

@media (max-width: 980px) {
  .trust-strip, .why-grid { grid-template-columns: repeat(2, 1fr); }
  .articles-grid { grid-template-columns: 1fr 1fr; }
  .info-layout { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .container { width: min(100% - 22px, var(--max)); }
  .hero { padding: 42px 0 54px; }
  .search-panel { padding: 18px; }
  .search-topline { align-items: flex-start; flex-direction: column; }
  .domain-form { grid-template-columns: 1fr; }
  .domain-submit { min-height: 52px; }
  .trust-strip, .why-grid, .use-cases, .articles-grid { grid-template-columns: 1fr; }
  .check-grid { grid-template-columns: 1fr; }
  .use-card { grid-template-columns: 1fr; }
  .use-visual { min-height: 150px; }
  section { padding: 54px 0; }
  .registration-info-layout { grid-template-columns: 1fr; }
  .domain-news-list { padding: 18px; }
  .domain-news-item { grid-template-columns: 1fr; gap: 14px; padding: 20px 0; }
  .domain-news-thumb { height: 150px; }
  .domain-news-more { text-align: center; }
  .qualification-section { padding: 30px 0 22px; }
  .qualification-panel { overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .qualification-panel img { width: 960px; max-width: none; }
}

.faq { background: #fff; }
.faq .section-head { max-width: 100%; }

.faq-list {
  max-width: 920px;
  margin: 0 auto;
  display: grid;
  gap: 12px;
}

details {
  background: #f8fafc;
  border: 1px solid #e7ebf1;
  border-radius: 15px;
  overflow: hidden;
}

summary {
  cursor: pointer;
  list-style: none;
  padding: 18px 20px;
  font-weight: 800;
  font-size: 18px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
}

summary::-webkit-details-marker { display: none; }

/* ============ 注册前重点信息 ============ */
.registration-unified-card {
  background: #fff;
  border-radius: 20px;
  padding: 36px 40px 32px;
  box-shadow: 0 8px 40px rgba(0,0,0,0.06);
  border: 1px solid #eef1f5;
}

.reg-card-title {
  font-size: 20px;
  font-weight: 800 !important;
  color: #1a1a1a;
  margin: 0 0 24px;
  padding-left: 12px;
  border-left: 4px solid #E74C3C;
}

.reg-check-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 28px;
}

.reg-check-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 20px;
  background: transparent;
  border: 1px solid #eef1f5;
  border-radius: 14px;
}

.reg-check-item:hover { }

.reg-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.reg-icon svg { width: 22px; height: 22px; }
.reg-icon { background: #fdecea; color: #E74C3C; }

.reg-item-body { display: flex; flex-direction: column; gap: 4px; }
.reg-item-body span { font-size: 13px; color: #888; }
.reg-item-body strong { font-size: 17px; font-weight: 700 !important; color: #1a1a1a; }

.reg-info-row {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
  padding: 12px 0;
  border: 1px solid #eef1f5;
  border-radius: 12px;
  margin-bottom: 20px;
  overflow: hidden;
}

.reg-info-cell {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 20px;
  position: relative;
}

.reg-info-cell + .reg-info-cell::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  height: 60%;
  border-left: 1px solid #eef1f5;
}

.reg-info-icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: #fdecea;
  color: #E74C3C;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.reg-info-icon svg { width: 18px; height: 18px; }
.reg-info-cell div { display: flex; flex-direction: column; gap: 2px; }
.reg-info-cell strong { font-size: 14px; font-weight: 700 !important; color: #1a1a1a; }
.reg-info-cell span { font-size: 12px; color: #999; }

.reg-notice {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  background: #fef9e7;
  border-radius: 10px;
  padding: 14px 18px;
  color: #b7791f;
  font-size: 13px;
  line-height: 1.6;
}
.reg-notice svg { flex-shrink: 0; margin-top: 2px; }

main .reason {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 12px;
  font-size: 14px;
  color: #666;
}
main .reason img { width: 20px; height: 20px; }
main .reason span { font-weight: 600; color: #333; }

main .wx-contact-btn {
  margin-left: 12px;
  color: #07C160;
  font-size: 16px;
  font-weight: 600;
  white-space: nowrap;
  border: 1px solid #07C160;
  border-radius: 6px;
  padding: 2px 10px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  cursor: pointer;
  transition: background .2s;
}
main .wx-contact-btn:hover {
  background: #07C160;
  color: #fff;
}
main .wx-contact-btn svg { width: 16px; height: 16px; }

@media (max-width: 900px) {
  .reg-check-grid { grid-template-columns: repeat(2, 1fr); }
  .reg-info-row { grid-template-columns: repeat(2, 1fr); }
  .reg-info-cell + .reg-info-cell::before { display: none; }
  .registration-unified-card { padding: 24px 20px; }
}
@media (max-width: 560px) {
  .reg-check-grid { grid-template-columns: 1fr; }
  .reg-info-row { grid-template-columns: 1fr; }
  .reg-item-body strong { font-size: 15px; }
}
summary::after { content: "+"; color: var(--primary); font-size: 18px; line-height: 1; }
details[open] summary::after { content: "−"; }

.answer { padding: 0 20px 20px; color: #566176; font-size: 14px; }

body#single #bottom {
  background: #F0F1F2 !important;
}