:root {
  --reg-ink: #17242a;
  --reg-muted: #5e6a70;
  --reg-brand: #103943;
  --reg-blue: #1d527b;
  --reg-accent: #ef6a3a;
  --reg-line: #dfe7e8;
  --reg-soft: #f4f8f8;
  --reg-white: #fff;
}

html { scroll-behavior: smooth; }
body { margin: 0; }
.ddd-registration-page,
.ddd-registration-page * { box-sizing: border-box; }
.ddd-registration-page { color: var(--reg-ink); background: var(--reg-white); font-family: "Microsoft YaHei", "PingFang SC", sans-serif; }
.ddd-registration-container { width: min(1180px, calc(100% - 32px)); margin: 0 auto; }
.ddd-registration-header { padding: 68px 0 62px; border-bottom: 1px solid var(--reg-line); background: var(--reg-soft); }
.ddd-registration-eyebrow,
.ddd-registration-kicker { margin: 0 0 10px; color: var(--reg-accent); font-size: 14px; font-weight: 700; line-height: 22px; letter-spacing: 0; }
.ddd-registration-header h1 { max-width: 820px; margin: 0; color: var(--reg-brand); font-size: 48px; line-height: 1.24; letter-spacing: 0; }
.ddd-registration-lead { max-width: 820px; margin: 20px 0 0; color: var(--reg-muted); font-size: 17px; line-height: 30px; }
.ddd-registration-header-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 18px; margin-top: 28px; }
.ddd-registration-primary { display: inline-flex; min-height: 44px; align-items: center; justify-content: center; padding: 10px 22px; color: #fff; background: var(--reg-accent); font-size: 14px; font-weight: 700; line-height: 22px; text-decoration: none; }
.ddd-registration-text-link { color: var(--reg-blue); font-size: 14px; font-weight: 700; line-height: 24px; text-underline-offset: 4px; }
.ddd-registration-section { padding: 72px 0; }
.ddd-registration-section-heading { max-width: 720px; }
.ddd-registration-section-heading h2,
.ddd-registration-contact h2 { margin: 0; color: var(--reg-brand); font-size: 32px; line-height: 1.35; letter-spacing: 0; }
.ddd-registration-section-heading > p:last-child { margin: 14px 0 0; color: var(--reg-muted); font-size: 15px; line-height: 27px; }

.ddd-registration-confirm-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0; margin: 34px 0 0; padding: 0; border-top: 1px solid var(--reg-line); border-left: 1px solid var(--reg-line); list-style: none; }
.ddd-registration-confirm-grid li { min-height: 190px; padding: 24px 22px; border-right: 1px solid var(--reg-line); border-bottom: 1px solid var(--reg-line); }
.ddd-registration-confirm-grid li > span { display: block; color: var(--reg-accent); font-size: 13px; font-weight: 700; line-height: 20px; }
.ddd-registration-confirm-grid strong { display: block; margin-top: 12px; color: var(--reg-brand); font-size: 18px; line-height: 26px; }
.ddd-registration-confirm-grid p { margin: 9px 0 0; color: var(--reg-muted); font-size: 14px; line-height: 24px; }

.ddd-registration-process { color: #fff; background: var(--reg-brand); }
.ddd-registration-heading-light h2 { color: #fff; }
.ddd-registration-heading-light > p:last-child { color: rgba(255,255,255,.72); }
.ddd-registration-timeline { display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); gap: 0; margin: 38px 0 0; padding: 0; list-style: none; }
.ddd-registration-timeline li { position: relative; padding: 0 15px 0 0; }
.ddd-registration-timeline li:not(:last-child)::after { position: absolute; top: 19px; right: 0; left: 42px; height: 1px; background: rgba(255,255,255,.28); content: ""; }
.ddd-registration-timeline li > span { position: relative; z-index: 1; display: inline-flex; width: 38px; height: 38px; align-items: center; justify-content: center; color: var(--reg-brand); background: #fff; font-size: 14px; font-weight: 700; }
.ddd-registration-timeline h3 { margin: 18px 0 0; color: #fff; font-size: 17px; line-height: 25px; }
.ddd-registration-timeline p { margin: 9px 0 0; color: rgba(255,255,255,.72); font-size: 13px; line-height: 23px; }

#registration-materials { scroll-margin-top: 20px; }
.ddd-registration-material-layout { display: grid; grid-template-columns: minmax(260px, .72fr) minmax(0, 1.28fr); gap: 70px; align-items: start; }
.ddd-registration-material-heading { position: sticky; top: 28px; }
.ddd-registration-material-list { margin: 0; padding: 0; border-top: 3px solid var(--reg-accent); list-style: none; }
.ddd-registration-material-list li { display: grid; grid-template-columns: 180px minmax(0, 1fr); gap: 24px; padding: 19px 0; border-bottom: 1px solid var(--reg-line); }
.ddd-registration-material-list strong { color: var(--reg-brand); font-size: 15px; line-height: 25px; }
.ddd-registration-material-list span { color: var(--reg-muted); font-size: 14px; line-height: 25px; }

.ddd-registration-special { background: var(--reg-soft); }
.ddd-registration-special-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px 36px; margin-top: 34px; }
.ddd-registration-special-grid article { padding: 24px 0; border-top: 2px solid var(--reg-blue); }
.ddd-registration-special-grid h3 { margin: 0; color: var(--reg-brand); font-size: 19px; line-height: 27px; }
.ddd-registration-special-grid p { margin: 10px 0 0; color: var(--reg-muted); font-size: 14px; line-height: 25px; }

.ddd-registration-after-layout { display: grid; grid-template-columns: minmax(260px, .8fr) minmax(0, 1.2fr); gap: 70px; }
.ddd-registration-after ul { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0; margin: 0; padding: 0; border-top: 1px solid var(--reg-line); border-left: 1px solid var(--reg-line); list-style: none; }
.ddd-registration-after li { min-height: 124px; padding: 21px; border-right: 1px solid var(--reg-line); border-bottom: 1px solid var(--reg-line); }
.ddd-registration-after li strong,
.ddd-registration-after li span { display: block; }
.ddd-registration-after li strong { color: var(--reg-brand); font-size: 16px; line-height: 25px; }
.ddd-registration-after li span { margin-top: 8px; color: var(--reg-muted); font-size: 13px; line-height: 23px; }

.ddd-registration-faq { padding-top: 0; }
.ddd-registration-faq-list { margin-top: 30px; border-top: 1px solid var(--reg-line); }
.ddd-registration-faq details { border-bottom: 1px solid var(--reg-line); }
.ddd-registration-faq summary { position: relative; padding: 22px 46px 22px 0; color: var(--reg-brand); font-size: 17px; font-weight: 700; line-height: 27px; cursor: pointer; list-style: none; }
.ddd-registration-faq summary::-webkit-details-marker { display: none; }
.ddd-registration-faq summary::after { position: absolute; top: 23px; right: 8px; color: var(--reg-accent); content: "+"; font-size: 24px; font-weight: 400; }
.ddd-registration-faq details[open] summary::after { content: "-"; }
.ddd-registration-faq details p { max-width: 860px; margin: -5px 0 22px; color: var(--reg-muted); font-size: 14px; line-height: 26px; }

.ddd-registration-contact { padding: 42px 0; color: #fff; background: var(--reg-blue); }
.ddd-registration-contact .ddd-registration-container { display: flex; align-items: center; justify-content: space-between; gap: 36px; }
.ddd-registration-contact h2 { color: #fff; }
.ddd-registration-contact p:last-child { max-width: 700px; margin: 10px 0 0; color: rgba(255,255,255,.76); font-size: 14px; line-height: 25px; }
.ddd-registration-contact-action { flex: 0 0 auto; text-align: right; }
.ddd-registration-contact-action span { display: block; color: rgba(255,255,255,.7); font-size: 13px; line-height: 22px; }
.ddd-registration-contact-action a { display: block; margin-top: 4px; color: #fff; font-size: 26px; font-weight: 700; line-height: 34px; text-decoration: none; }
.ddd-registration-notice { padding: 18px 0; color: var(--reg-muted); background: #fff8f4; border-bottom: 1px solid #f0ded5; font-size: 13px; line-height: 23px; }
.ddd-registration-notice strong { color: var(--reg-accent); }

@media screen and (max-width: 980px) {
  .ddd-registration-confirm-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ddd-registration-timeline { grid-template-columns: 1fr; gap: 18px; }
  .ddd-registration-timeline li { display: grid; grid-template-columns: 38px minmax(0, 1fr); gap: 15px; padding: 0; }
  .ddd-registration-timeline li:not(:last-child)::after { top: 38px; bottom: -18px; left: 19px; width: 1px; height: auto; }
  .ddd-registration-timeline h3 { margin-top: 0; }
  .ddd-registration-timeline p { margin-top: 5px; }
}

@media screen and (max-width: 760px) {
  .ddd-registration-container { width: calc(100% - 32px); }
  .ddd-registration-header { padding: 48px 0 42px; }
  .ddd-registration-header h1 { font-size: 36px; }
  .ddd-registration-lead { font-size: 15px; line-height: 27px; }
  .ddd-registration-section { padding: 52px 0; }
  .ddd-registration-section-heading h2,
  .ddd-registration-contact h2 { font-size: 27px; }
  .ddd-registration-confirm-grid,
  .ddd-registration-special-grid,
  .ddd-registration-material-layout,
  .ddd-registration-after-layout,
  .ddd-registration-after ul { grid-template-columns: 1fr; }
  .ddd-registration-confirm-grid li { min-height: 0; }
  .ddd-registration-material-layout,
  .ddd-registration-after-layout { gap: 30px; }
  .ddd-registration-material-heading { position: static; }
  .ddd-registration-material-list li { grid-template-columns: 1fr; gap: 5px; }
  .ddd-registration-contact .ddd-registration-container { align-items: flex-start; flex-direction: column; }
  .ddd-registration-contact-action { text-align: left; }
  .ddd-registration-contact-action a { font-size: 24px; }
}

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }