:root {
  --ppt-bg: #fff8f2;
  --ppt-surface: #ffffff;
  --ppt-surface-soft: #fff3ec;
  --ppt-text: #172033;
  --ppt-muted: #647086;
  --ppt-border: #eee7e2;
  --ppt-coral: #ff6b57;
  --ppt-orange: #ff9d2f;
  --ppt-accent: #c94f3d;
  --ppt-accent-hover: #b84334;
  --ppt-accent-soft: #fff0eb;
  --ppt-action: #eb6a50;
  --ppt-action-hover: #df5b43;
  --ppt-action-gradient: linear-gradient(135deg, #f18454 0%, #ec704f 54%, #e45f48 100%);
  --ppt-action-gradient-hover: linear-gradient(135deg, #ed774a 0%, #e56547 54%, #d9533e 100%);
  --ppt-action-ink: #ffffff;
  --ppt-violet: #8e6cff;
  --ppt-navy: #071426;
  --ppt-shadow: 0 28px 80px rgb(41 56 85 / 0.13);
  --ppt-shadow-soft: 0 16px 46px rgb(41 56 85 / 0.09);
  --ppt-radius-xl: 30px;
  --ppt-radius-lg: 22px;
  --ppt-radius-md: 16px;
  --ppt-font: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 92px; }
body.ppt-site {
  margin: 0;
  min-width: 0;
  overflow-x: clip;
  color: var(--ppt-text);
  background: var(--ppt-bg);
  font-family: var(--ppt-font);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
body.ppt-site.is-modal-open { overflow: hidden; }
.ppt-site img { max-width: 100%; }
.ppt-site a { color: inherit; text-decoration: none; }
.ppt-site button, .ppt-site input, .ppt-site select, .ppt-site textarea { font: inherit; }
.ppt-site :focus-visible { outline: 3px solid rgb(201 79 61 / 0.36); outline-offset: 3px; }
.ppt-site [hidden] { display: none !important; }
.ppt-site .skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 400;
  padding: 10px 14px;
  border-radius: 10px;
  background: #fff;
  color: var(--ppt-accent);
  box-shadow: var(--ppt-shadow-soft);
  transform: translateY(-150%);
}
.ppt-site .skip-link:focus { transform: translateY(0); }
.ppt-skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 400;
  padding: 10px 14px;
  border-radius: 10px;
  color: var(--ppt-accent);
  background: #fff;
  box-shadow: var(--ppt-shadow-soft);
  transform: translateY(-150%);
}
.ppt-skip-link:focus { transform: translateY(0); }

.ppt-container,
.ppt-site .ppt-container {
  width: min(1180px, calc(100% - 64px));
  margin-inline: auto;
}

/* 智在PPT子站导航 */
.ppt-header {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid rgb(232 237 245 / .9);
  background: #fff;
  box-shadow: 0 8px 28px rgb(41 56 85 / .05);
}
.ppt-nav {
  width: min(1240px, calc(100% - 48px));
  min-height: 72px;
  margin-inline: auto;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 24px;
}
.ppt-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: max-content;
  color: var(--ppt-text);
  font-weight: 800;
  letter-spacing: -0.02em;
}
.ppt-brand-mark,
.ppt-brand .brand-mark {
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  color: #fff;
  background: linear-gradient(135deg, var(--ppt-orange), var(--ppt-coral));
  box-shadow: 0 9px 20px rgb(255 107 87 / 0.2);
  font-size: 16px;
  font-weight: 850;
}
.ppt-brand-copy { display: grid; line-height: 1.05; }
.ppt-brand-copy small { margin-top: 4px; color: var(--ppt-muted); font-size: 10px; font-weight: 650; letter-spacing: 0; }
.ppt-nav-links {
  min-width: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: clamp(14px, 1.6vw, 25px);
  color: #4e5969;
  font-size: 14px;
  font-weight: 680;
  white-space: nowrap;
}
.ppt-nav-links a {
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  border-bottom: 2px solid transparent;
}
.ppt-nav-links a:hover,
.ppt-nav-links a[aria-current="page"],
.ppt-nav-links a[aria-current="location"],
.ppt-nav-links a.is-active { color: var(--ppt-accent); border-bottom-color: var(--ppt-accent); }
.ppt-nav-actions { display: flex; align-items: center; justify-content: flex-end; gap: 10px; white-space: nowrap; }
.auth-entry {
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  max-width: 160px;
  padding: 0 4px;
  border-radius: 4px;
  color: var(--ppt-accent);
  font-size: 14px;
  font-weight: 760;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: color .15s ease, transform .15s ease;
}
.auth-entry:hover { color: var(--ppt-accent-hover); transform: translateY(-1px); }
.auth-menu {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-width: 0;
}
.auth-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 120px;
  padding: 8px;
  border: 1px solid var(--ppt-border);
  border-radius: 12px;
  background: #fff;
  box-shadow: 0 18px 48px rgb(41 56 85 / .14);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity .16s ease, transform .16s ease, visibility .16s ease;
  z-index: 45;
}
.auth-menu.is-open .auth-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.auth-dropdown button {
  width: 100%;
  min-height: 36px;
  padding: 0 10px;
  border: 0;
  border-radius: 8px;
  color: #4e5969;
  background: transparent;
  font-size: 14px;
  text-align: left;
  cursor: pointer;
}
.auth-dropdown button:hover {
  color: var(--ppt-accent);
  background: #fff4f0;
}
.ppt-btn,
.ppt-site .ppt-btn,
.ppt-button,
.ppt-site .ppt-button {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0 18px;
  border: 1px solid transparent;
  border-radius: 14px;
  cursor: pointer;
  font-weight: 760;
  line-height: 1;
  transition: transform .18s ease, box-shadow .18s ease, background-color .18s ease, border-color .18s ease;
}
.ppt-btn:hover, .ppt-button:hover { transform: translateY(-1px); }
.ppt-site .ppt-btn-primary, .ppt-site .ppt-button.is-primary { color: var(--ppt-action-ink); background: var(--ppt-action-gradient); box-shadow: 0 8px 18px rgb(228 95 72 / .18); text-shadow: 0 1px 1px rgb(108 35 22 / .14); }
.ppt-site .ppt-btn-primary:hover, .ppt-site .ppt-button.is-primary:hover { background: var(--ppt-action-gradient-hover); box-shadow: 0 10px 22px rgb(217 83 62 / .22); }
.ppt-site .ppt-btn-secondary, .ppt-site .ppt-button.is-secondary { color: var(--ppt-accent); border-color: rgb(201 79 61 / .22); background: #fff; }
.ppt-site .ppt-btn-secondary:hover, .ppt-site .ppt-button.is-secondary:hover { border-color: var(--ppt-accent); box-shadow: 0 7px 16px rgb(201 79 61 / .1); }
.ppt-site .ppt-btn-dark { color: #fff; background: var(--ppt-navy); }
.ppt-header .ppt-btn-primary { min-height: 40px; padding-inline: 16px; border-radius: 12px; box-shadow: 0 6px 14px rgb(228 95 72 / .16); }
.ppt-menu-toggle, .ppt-site .ppt-menu-toggle { display: none; min-width: 44px; padding-inline: 13px; background: #fff; color: var(--ppt-text); border: 1px solid var(--ppt-border); }
.ppt-mobile-menu { display: none; }

/* 信息页共用 Hero 与卡片 */
.subpage-main {
  min-height: 70vh;
  background:
    radial-gradient(circle at 11% 4%, rgb(255 216 77 / .24), transparent 27rem),
    radial-gradient(circle at 85% 4%, rgb(142 108 255 / .17), transparent 28rem),
    linear-gradient(180deg, #fff8f2 0%, #fff 52%);
}
.subpage-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(78px, 9vw, 128px) 0 clamp(62px, 7vw, 92px);
}
.subpage-hero::after {
  content: "";
  position: absolute;
  width: 360px;
  height: 360px;
  right: max(-100px, calc((100vw - 1180px) / 2 - 140px));
  top: -120px;
  border-radius: 50%;
  background: radial-gradient(circle, rgb(255 107 87 / .18), transparent 67%);
  pointer-events: none;
}
.subpage-hero-inner { position: relative; z-index: 1; max-width: 820px; }
.subpage-hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(280px, .85fr); align-items: center; gap: clamp(34px, 6vw, 52px); }
.subpage-hero-copy { min-width: 0; }
.certifications-hero-copy { position: relative; z-index: 1; max-width: 920px; }
.certifications-hero-copy .subpage-hero-copy { max-width: 820px; }
.subpage-hero-media { min-width: 0; }
.subpage-hero-media img { width: 100%; height: auto; display: block; border: 1px solid rgb(201 79 61 / .12); border-radius: 28px; background: #fff; box-shadow: var(--ppt-shadow); }
.subpage-hero-media.ppt-grid .ppt-card { min-height: 156px; display: flex; flex-direction: column; justify-content: center; padding: 22px 20px; }
.subpage-hero-media.ppt-grid strong { display: block; margin-bottom: 8px; color: var(--ppt-accent); font-size: clamp(24px, 2.4vw, 34px); line-height: 1.05; letter-spacing: -0.035em; }
.subpage-hero-media.ppt-grid span { display: block; color: var(--ppt-muted); font-size: 13px; line-height: 1.55; }
.subpage-kicker,
.eyebrow,
.ppt-eyebrow {
  display: inline-flex;
  align-items: center;
  min-height: 0;
  margin: 0 0 14px;
  padding: 0;
  border: 0;
  border-radius: 0;
  color: var(--ppt-accent);
  background: transparent;
  font-size: 13px;
  font-weight: 820;
  letter-spacing: .08em;
}
.subpage-hero h1 {
  max-width: 820px;
  margin: 22px 0 20px;
  font-size: clamp(42px, 6vw, 72px);
  line-height: 1.06;
  letter-spacing: -0.055em;
}
.subpage-hero p:not(.eyebrow):not(.ppt-eyebrow):not(.subpage-kicker) { max-width: 720px; margin: 0; color: var(--ppt-muted); font-size: clamp(17px, 2vw, 20px); line-height: 1.78; }
.subpage-hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.ppt-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.hero-meta { display: flex; flex-wrap: wrap; gap: 10px 22px; margin-top: 26px; color: var(--ppt-muted); font-size: 13px; }

.ppt-section { padding: clamp(64px, 8vw, 108px) 0; }
.ppt-section.is-soft { background: #f8f7ff; }
.ppt-section.is-white { background: #fff; }
.ppt-section.is-dark { color: #fff; background: var(--ppt-navy); }
.ppt-section-head { max-width: 760px; margin-bottom: 34px; }
.ppt-section-head h2 { margin: 0 0 14px; font-size: clamp(30px, 4vw, 48px); line-height: 1.15; letter-spacing: -0.045em; }
.ppt-section-head p:not(.eyebrow):not(.ppt-eyebrow) { margin: 0; color: var(--ppt-muted); font-size: 16px; line-height: 1.78; }
.ppt-section.is-dark .ppt-section-head p { color: #b8c5d8; }
.ppt-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.ppt-grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.ppt-grid.four { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.ppt-card {
  min-width: 0;
  padding: clamp(22px, 3vw, 32px);
  border: 1px solid var(--ppt-border);
  border-radius: var(--ppt-radius-lg);
  background: #fff;
  box-shadow: var(--ppt-shadow-soft);
}
.ppt-card h2, .ppt-card h3 { margin-top: 0; letter-spacing: -0.025em; }
.ppt-card p { color: var(--ppt-muted); line-height: 1.75; }
.ppt-card p:last-child { margin-bottom: 0; }
.ppt-card.is-compact { margin-top: 24px; padding: 18px 20px; box-shadow: none; }
.ppt-card-index { width: 42px; min-height: 28px; display: inline-flex; align-items: center; justify-content: center; margin-bottom: 18px; border-radius: 999px; color: var(--ppt-accent); background: #fff0eb; font-size: 12px; font-weight: 820; }
.ppt-card-link { transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease; }
.ppt-card-link:hover { transform: translateY(-3px); border-color: rgb(201 79 61 / .25); box-shadow: var(--ppt-shadow); }
.ppt-chip-list { display: flex; flex-wrap: wrap; gap: 9px; margin: 18px 0 0; padding: 0; list-style: none; }
.ppt-chip { padding: 7px 11px; border-radius: 999px; background: #fff4f0; color: #51627b; font-size: 12px; font-weight: 680; }
.ppt-note { padding: 18px 20px; border-left: 4px solid var(--ppt-orange); border-radius: 0 14px 14px 0; background: #fff6e9; color: #5d4a31; line-height: 1.7; }
.ppt-actions-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 26px; }
.ppt-callout { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; gap: 32px; padding: clamp(26px, 4vw, 42px); border: 1px solid var(--ppt-border); border-radius: var(--ppt-radius-xl); background: #fff; box-shadow: var(--ppt-shadow-soft); }
.ppt-callout h2 { margin: 12px 0; font-size: clamp(28px, 4vw, 42px); letter-spacing: -0.04em; }
.ppt-callout p:not(.ppt-eyebrow):not(.eyebrow) { margin: 0; color: var(--ppt-muted); line-height: 1.75; }
.ppt-callout .ppt-actions { margin-top: 0; justify-content: flex-end; }
.ppt-fact-list { margin: 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.ppt-fact-list > div { display: grid; gap: 8px; }
.ppt-fact-list dt { color: var(--ppt-muted); font-size: 13px; font-weight: 700; }
.ppt-fact-list dd { margin: 0; font-weight: 760; overflow-wrap: anywhere; }
.ppt-fact-list a { color: var(--ppt-accent); }
.ppt-trust-summary { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.ppt-trust-summary .ppt-card:first-child { grid-column: 1 / -1; }
.ppt-trust-summary strong { display: block; margin-bottom: 6px; color: var(--ppt-accent); font-size: clamp(28px, 4vw, 44px); letter-spacing: -0.04em; }
.ppt-trust-summary span { color: var(--ppt-muted); font-size: 13px; }

/* 联系页 */
.contact-channels { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.contact-channel { min-height: 100%; }
.contact-channel img { width: min(190px, 100%); aspect-ratio: 1; object-fit: contain; display: block; margin: 18px auto 6px; border: 1px solid var(--ppt-border); border-radius: 18px; background: #fff; }
.contact-email { overflow-wrap: anywhere; color: var(--ppt-accent); font-weight: 750; }
.contact-layout { display: grid; grid-template-columns: minmax(0, .74fr) minmax(0, 1.26fr); gap: 28px; align-items: start; }
.ppt-split-layout { display: grid; grid-template-columns: minmax(0, .72fr) minmax(0, 1.28fr); gap: clamp(28px, 5vw, 68px); align-items: start; }
.contact-form, .ppt-form { display: grid; gap: 18px; }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.form-grid > .full { grid-column: 1 / -1; }
.ppt-form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.form-field, .ppt-field { display: grid; gap: 8px; }
.form-field.full, .ppt-field.full { grid-column: 1 / -1; }
.ppt-field.is-full, .ppt-form-grid > .is-full { grid-column: 1 / -1; }
.form-field label, .ppt-field label { font-size: 14px; font-weight: 760; }
.form-field .required { color: var(--ppt-coral); }
.form-field input, .form-field select, .form-field textarea,
.ppt-field input, .ppt-field select, .ppt-field textarea {
  width: 100%;
  min-height: 48px;
  padding: 12px 14px;
  border: 1px solid #dbe2ee;
  border-radius: 12px;
  color: var(--ppt-text);
  background: #fff;
}
.form-field textarea, .ppt-field textarea { min-height: 140px; resize: vertical; }
.form-field input:focus, .form-field select:focus, .form-field textarea:focus,
.ppt-field input:focus, .ppt-field select:focus, .ppt-field textarea:focus { border-color: var(--ppt-accent); outline: 3px solid rgb(201 79 61 / .1); }
.form-help, .form-status, .ppt-form-status { color: var(--ppt-muted); font-size: 13px; line-height: 1.6; }
label.form-help { display: flex; align-items: flex-start; gap: 9px; }
label.form-help input[type="checkbox"] { width: 18px; height: 18px; margin-top: 2px; flex: 0 0 auto; accent-color: var(--ppt-accent); }
label.form-help a { margin-inline: 3px; color: var(--ppt-accent); }
.form-status[aria-live] { min-height: 22px; }
.ppt-form-status { min-height: 22px; margin: 0; }
.ppt-form-status.is-success { color: #237c57; }
.ppt-consent { display: flex; align-items: flex-start; gap: 9px; color: var(--ppt-muted); font-size: 13px; line-height: 1.6; }
.ppt-consent input { width: 18px; height: 18px; margin-top: 2px; flex: 0 0 auto; accent-color: var(--ppt-accent); }
.ppt-consent a { margin-inline: 3px; color: var(--ppt-accent); }
.ppt-form-note { margin: 0; padding: 14px 16px; border-radius: 12px; color: #6b4d34; background: #fff5e8; font-size: 12px; line-height: 1.65; }
.ppt-qr-card { text-align: center; }
.ppt-qr-card img { width: min(210px, 100%); aspect-ratio: 1; object-fit: contain; display: block; margin: 0 auto 18px; border: 1px solid var(--ppt-border); border-radius: 18px; background: #fff; }

/* 关于、资讯、FAQ */
.fact-list, .plain-list { margin: 0; padding: 0; list-style: none; display: grid; gap: 12px; }
.fact-list li { display: grid; grid-template-columns: minmax(110px, .34fr) minmax(0, 1fr); gap: 18px; padding-bottom: 12px; border-bottom: 1px solid var(--ppt-border); }
.fact-list li:last-child { border-bottom: 0; padding-bottom: 0; }
.fact-list strong { font-size: 14px; }
.fact-list span, .fact-list a { color: var(--ppt-muted); overflow-wrap: anywhere; }
.fact-list-showcase {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}
.fact-list-showcase li {
  min-height: 126px;
  grid-template-columns: 1fr;
  align-content: start;
  gap: 12px;
  padding: 22px 24px;
  border: 1px solid rgb(201 79 61 / .14);
  border-radius: 22px;
  background:
    radial-gradient(circle at top right, rgb(255 155 125 / .14), transparent 36%),
    linear-gradient(180deg, #fffdfb 0%, #fff7f2 100%);
  box-shadow: 0 16px 34px rgb(41 56 85 / .06);
}
.fact-list-showcase li:last-child { padding-bottom: 22px; }
.fact-list-showcase strong {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  min-height: 28px;
  padding: 0 12px;
  border-radius: 999px;
  color: var(--ppt-accent);
  background: #fff0eb;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .04em;
}
.fact-list-showcase span,
.fact-list-showcase a {
  color: var(--ppt-text);
  font-size: 18px;
  font-weight: 760;
  line-height: 1.6;
}
.fact-list-showcase a {
  text-decoration: none;
  text-underline-offset: 3px;
}
.fact-list-showcase a:hover {
  color: var(--ppt-accent);
  text-decoration: underline;
}
.faq-list { display: grid; gap: 14px; }
.faq-item { border: 1px solid var(--ppt-border); border-radius: 18px; background: #fff; overflow: clip; box-shadow: 0 10px 32px rgb(41 56 85 / .06); }
.faq-item summary { min-height: 64px; display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 18px 22px; cursor: pointer; font-weight: 780; list-style: none; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; flex: 0 0 auto; color: var(--ppt-accent); font-size: 24px; font-weight: 400; }
.faq-item[open] summary::after { content: "−"; }
.faq-answer, .faq-item > div { padding: 0 22px 22px; color: var(--ppt-muted); line-height: 1.8; }
.faq-item > div p { margin: 0 0 10px; }
.faq-item > div a { color: var(--ppt-accent); font-weight: 750; }
.news-list { display: grid; gap: 16px; }
.news-item, .news-card { display: grid; grid-template-columns: 150px minmax(0, 1fr) auto; gap: 22px; align-items: center; padding: 24px 26px; border: 1px solid var(--ppt-border); border-radius: 20px; background: #fff; box-shadow: 0 12px 34px rgb(41 56 85 / .06); }
.news-date { color: var(--ppt-muted); font-size: 13px; font-variant-numeric: tabular-nums; }
.news-item h2, .news-item h3, .news-card h2, .news-card h3 { margin: 0 0 8px; font-size: 20px; }
.news-item p, .news-card p { margin: 0; color: var(--ppt-muted); line-height: 1.7; }
.news-source { color: var(--ppt-accent); font-size: 13px; font-weight: 750; white-space: nowrap; }
.news-card { grid-template-columns: 1fr; gap: 10px; align-items: start; }
.news-meta { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px 18px; color: var(--ppt-muted); font-size: 12px; }
.news-meta span { color: var(--ppt-violet); font-weight: 760; }
.news-card .news-source { margin-top: 4px; }

/* 证书 */
.cert-grid, .certification-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; }
.cert-card, .certification-card { scroll-margin-top: 100px; padding: 18px; border: 1px solid var(--ppt-border); border-radius: 22px; background: #fff; box-shadow: var(--ppt-shadow-soft); }
.cert-preview, .cert-image-button { width: 100%; min-height: 280px; display: grid; place-items: center; padding: 12px; border: 0; border-radius: 16px; background: #f7f8fc; cursor: zoom-in; }
.cert-preview img, .cert-image-button img { width: 100%; height: 300px; display: block; object-fit: contain; }
.cert-image-link { width: 100%; min-height: 280px; display: grid; place-items: center; padding: 12px; border-radius: 16px; background: #f7f8fc; cursor: zoom-in; overflow: hidden; }
.cert-image-link img { width: 100%; height: 300px; display: block; object-fit: contain; }
.cert-card-copy { padding: 0 4px 4px; }
.cert-card-copy > a { color: var(--ppt-accent); font-size: 12px; font-weight: 720; }
.cert-card h2, .cert-card h3, .certification-card h2, .certification-card h3 { margin: 18px 4px 7px; font-size: 19px; }
.cert-card p, .certification-card p { margin: 0 4px 4px; color: var(--ppt-muted); font-size: 14px; line-height: 1.65; }
.cert-dialog { width: min(960px, calc(100vw - 32px)); max-height: calc(100vh - 32px); padding: 0; border: 0; border-radius: 22px; background: #fff; box-shadow: 0 30px 100px rgb(7 20 38 / .28); }
.cert-dialog::backdrop { background: rgb(7 20 38 / .74); backdrop-filter: blur(4px); }
.cert-dialog-inner { position: relative; display: grid; place-items: center; padding: 58px 24px 24px; }
.cert-dialog img { width: 100%; max-height: calc(100vh - 130px); object-fit: contain; }
.cert-dialog-close { position: absolute; top: 14px; right: 14px; min-width: 42px; min-height: 42px; border: 1px solid var(--ppt-border); border-radius: 999px; background: #fff; cursor: pointer; font-weight: 800; }

/* 法律阅读 */
.legal-shell { background: #fff; }
.legal-hero { padding-top: 66px; padding-bottom: 54px; }
.legal-hero h1 { font-size: clamp(38px, 5vw, 58px); }
.legal-layout { display: grid; grid-template-columns: 240px minmax(0, 800px); justify-content: center; align-items: start; gap: clamp(34px, 5vw, 70px); padding: 54px 0 100px; }
.legal-toc-wrap { position: sticky; top: 96px; align-self: start; }
.legal-toc { position: static; max-height: none; overflow: visible; padding: 18px; border: 1px solid var(--ppt-border); border-radius: 18px; background: #fffaf7; }
.legal-toc-title { margin: 0 0 10px; font-size: 13px; color: var(--ppt-muted); font-weight: 760; }
.legal-toc a { display: block; padding: 8px 10px; border-radius: 9px; color: #59677d; font-size: 13px; line-height: 1.45; }
.legal-toc a:hover, .legal-toc a.is-active { color: var(--ppt-accent); background: #fff0eb; }
.legal-toc-toggle { display: none; width: 100%; min-height: 48px; justify-content: space-between; align-items: center; padding: 0 15px; border: 1px solid var(--ppt-border); border-radius: 12px; color: var(--ppt-text); background: #fff; font-weight: 750; }
.legal-content { min-width: 0; color: #344056; font-size: 16px; line-height: 1.9; }
.legal-content h2, .legal-content h3 { scroll-margin-top: 98px; color: var(--ppt-text); line-height: 1.35; letter-spacing: -0.02em; }
.legal-content h2 { margin: 58px 0 18px; padding-top: 4px; font-size: 27px; }
.legal-content h2:first-child { margin-top: 0; }
.legal-content h3 { margin: 30px 0 12px; font-size: 20px; }
.legal-content p { margin: 0 0 18px; }
.legal-content ul, .legal-content ol { margin: 0 0 22px; padding-left: 1.4em; }
.legal-content li { margin: 7px 0; }
.legal-content a { color: var(--ppt-accent); text-decoration: underline; text-underline-offset: 3px; }
.legal-review-note { margin: 0 0 30px; padding: 18px 20px; border: 1px solid #ffd6b8; border-radius: 14px; background: #fff6eb; color: #6b4d34; }

/* 页脚 */
.ppt-footer { padding: 74px 0 26px; color: #c5d0df; background: var(--ppt-navy); }
.ppt-footer-grid { display: grid; grid-template-columns: minmax(220px, 1.35fr) repeat(4, minmax(120px, .65fr)); gap: 34px; }
.ppt-footer-brand { max-width: 320px; }
.ppt-footer .ppt-brand { color: #fff; }
.ppt-footer-brand p { color: #9cabbf; line-height: 1.75; font-size: 14px; margin-left: 40px; }
.ppt-footer h2, .ppt-footer h3 { margin: 2px 0 16px; color: #fff; font-size: 14px; }
.ppt-footer-links { display: grid; gap: 10px; }
.ppt-footer-col { display: grid; align-content: start; gap: 10px; }
.ppt-footer-col h2 { margin-bottom: 6px; }
.ppt-footer-col a { color: #9cabbf; font-size: 13px; line-height: 1.55; }
.ppt-footer-col a:hover { color: #fff; }
.ppt-footer-links a { color: #9cabbf; font-size: 13px; line-height: 1.55; }
.ppt-footer-links a:hover { color: #fff; }
.ppt-footer-bottom { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 16px; margin-top: 46px; padding-top: 22px; border-top: 1px solid rgb(255 255 255 / .1); color: #8797ad; font-size: 12px; line-height: 1.7; }
.ppt-footer-bottom-links { display: flex; flex-wrap: wrap; gap: 10px 18px; }
.ppt-footer-bottom > div { display: flex; flex-wrap: wrap; gap: 10px 18px; }

/* 子站专属客服 */
.ppt-support { position: fixed; right: 22px; bottom: 22px; z-index: 220; }
.ppt-support-fab {
  min-height: 52px;
  padding: 0 20px;
  border: 0;
  border-radius: 999px;
  color: var(--ppt-action-ink);
  background: var(--ppt-action);
  box-shadow: 0 12px 26px rgb(235 106 80 / .22);
  cursor: pointer;
  font-weight: 760;
  letter-spacing: 0;
}
.ppt-support-fab:hover { transform: translateY(-2px); }
.ppt-support-panel {
  position: absolute;
  right: 0;
  bottom: 66px;
  width: min(350px, calc(100vw - 32px));
  padding: 20px;
  border: 1px solid var(--ppt-border);
  border-radius: 22px;
  background: #fff;
  box-shadow: 0 28px 80px rgb(7 20 38 / .2);
  transform-origin: right bottom;
}
.ppt-support-panel[hidden] { display: none; }
.ppt-support-head { display: flex; justify-content: space-between; align-items: start; gap: 14px; }
.ppt-support-head h2 { margin: 0 0 5px; font-size: 20px; }
.ppt-support-head p { margin: 0; color: var(--ppt-muted); font-size: 13px; line-height: 1.55; }
.ppt-support-close { min-width: 36px; min-height: 36px; border: 1px solid var(--ppt-border); border-radius: 999px; color: var(--ppt-muted); background: #fff; cursor: pointer; }
.ppt-support-tabs { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; margin: 16px 0 14px; padding: 4px; border-radius: 12px; background: #f8f2ee; }
.ppt-support-tab { min-height: 36px; border: 0; border-radius: 9px; color: #637086; background: transparent; cursor: pointer; font-size: 13px; font-weight: 750; }
.ppt-support-tab[aria-selected="true"] { color: var(--ppt-accent); background: #fff; box-shadow: 0 6px 16px rgb(41 56 85 / .08); }
.ppt-support-qr { width: 196px; aspect-ratio: 1; display: block; margin: 0 auto; object-fit: contain; border: 1px solid var(--ppt-border); border-radius: 16px; background: #fff; }
.ppt-support-tip { margin: 9px 0 6px; color: var(--ppt-muted); text-align: center; font-size: 12px; }
.ppt-support-note { margin: 0 0 15px; color: #7a6370; text-align: center; font-size: 11px; line-height: 1.55; }
.ppt-support-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 9px; }
.ppt-support-actions .ppt-btn { min-height: 40px; padding-inline: 12px; font-size: 13px; }
.ppt-support-email { grid-column: 1 / -1; margin: 12px 0 0; color: var(--ppt-muted); text-align: center; font-size: 12px; overflow-wrap: anywhere; }
.ppt-support-scrim { display: none; }

@media (max-width: 1080px) {
  .ppt-nav { grid-template-columns: auto 1fr auto; }
  .subpage-hero-grid { grid-template-columns: 1fr; }
  .subpage-hero-copy { max-width: 780px; }
  .subpage-hero-media { max-width: 760px; }
  .ppt-nav-links { display: none; }
  .ppt-menu-toggle, .ppt-site .ppt-menu-toggle { display: inline-flex; }
  .ppt-mobile-menu {
    position: absolute;
    inset: 72px 0 auto;
    padding: 10px max(24px, calc((100vw - 1180px) / 2));
    border-top: 1px solid var(--ppt-border);
    border-bottom: 1px solid var(--ppt-border);
    background: #fff;
    box-shadow: 0 18px 42px rgb(41 56 85 / .1);
  }
  .ppt-mobile-menu:not([hidden]) { display: grid; }
  .ppt-mobile-menu a { min-height: 46px; display: flex; align-items: center; padding: 0 10px; border-radius: 10px; color: #4e5969; font-weight: 680; }
  .ppt-mobile-menu a:hover,
  .ppt-mobile-menu a[aria-current="page"],
  .ppt-mobile-menu a[aria-current="location"],
  .ppt-mobile-menu a.is-active { color: var(--ppt-accent); background: #fff4f0; }
  .ppt-mobile-menu .ppt-mobile-trial {
    justify-content: center;
    margin: 8px 0;
    color: var(--ppt-accent);
    background: #fff4f0;
    font-weight: 760;
  }
  .ppt-footer-grid { grid-template-columns: 1.2fr repeat(2, 1fr); }
  .ppt-footer-brand { grid-row: span 2; }
  .cert-grid, .certification-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 820px) {
  .ppt-container, .ppt-site .ppt-container { width: min(100% - 40px, 1180px); }
  .subpage-hero { padding-top: 66px; }
  .subpage-hero h1 { letter-spacing: -0.045em; }
  .ppt-grid, .ppt-grid.two, .ppt-grid.three, .ppt-grid.four, .contact-channels { grid-template-columns: 1fr; }
  .subpage-hero-grid { grid-template-columns: 1fr; }
  .ppt-callout { grid-template-columns: 1fr; }
  .ppt-callout .ppt-actions { justify-content: flex-start; }
  .contact-layout { grid-template-columns: 1fr; }
  .ppt-split-layout { grid-template-columns: 1fr; }
  .news-item, .news-card { grid-template-columns: 1fr; gap: 8px; }
  .news-source { margin-top: 4px; }
  .legal-layout { display: block; padding-top: 28px; }
  .legal-toc-wrap { position: sticky; top: 72px; z-index: 30; padding: 8px 0; background: #fff; }
  .legal-toc-toggle { display: flex; }
  .legal-toc { position: static; max-height: none; display: none; margin-top: 10px; }
  .legal-toc.is-open, .legal-toc:not([hidden]).is-open { display: block; max-height: min(58vh, 420px); overflow-y: auto; }
  .legal-toc[hidden] { display: none !important; }
  .legal-content { margin-top: 20px; font-size: 15.5px; line-height: 1.86; }
  .legal-content h2 { font-size: 24px; }
  .ppt-footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ppt-footer-brand { grid-column: 1 / -1; grid-row: auto; }
}

@media (max-width: 640px) {
  .ppt-container, .ppt-site .ppt-container { width: min(100% - 28px, 1180px); }
  .ppt-nav { width: calc(100% - 28px); min-height: 64px; gap: 10px; }
  .ppt-header .ppt-btn-primary { display: none; }
  .ppt-mobile-menu { inset-block-start: 64px; padding-inline: 14px; }
  .legal-toc-wrap { top: 64px; }
  .ppt-brand-copy small { display: none; }
  .subpage-hero { padding: 52px 0 54px; }
  .subpage-hero h1 { margin-top: 18px; font-size: clamp(36px, 10.5vw, 46px); line-height: 1.1; }
  .subpage-hero p { font-size: 16px; }
  .ppt-section { padding: 56px 0; }
  .ppt-section-head h2 { font-size: 32px; }
  .ppt-card { padding: 21px; border-radius: 18px; }
  .form-grid { grid-template-columns: 1fr; }
  .ppt-form-grid { grid-template-columns: 1fr; }
  .form-field.full { grid-column: auto; }
  .form-grid > .full { grid-column: auto; }
  .ppt-field.is-full, .ppt-form-grid > .is-full { grid-column: auto; }
  .fact-list li { grid-template-columns: 1fr; gap: 5px; }
  .fact-list-showcase { grid-template-columns: 1fr; }
  .fact-list-showcase li { min-height: 0; gap: 10px; padding: 18px 18px 20px; }
  .fact-list-showcase li:last-child { padding-bottom: 20px; }
  .fact-list-showcase span,
  .fact-list-showcase a { font-size: 16px; }
  .ppt-fact-list { grid-template-columns: 1fr; }
  .cert-grid, .certification-grid { grid-template-columns: 1fr; }
  .cert-preview img, .cert-image-button img { height: min(98vw, 390px); }
  .ppt-footer { padding-top: 54px; }
  .ppt-footer-grid { grid-template-columns: 1fr 1fr; gap: 30px 22px; }
  .ppt-footer-bottom { display: grid; }
  .ppt-support { right: 14px; bottom: 14px; }
  .ppt-support-fab { min-height: 48px; padding-inline: 17px; }
  .ppt-support-panel {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    max-height: min(86vh, 700px);
    overflow: auto;
    padding: 20px 18px calc(20px + env(safe-area-inset-bottom));
    border-radius: 24px 24px 0 0;
    z-index: 2;
  }
  .ppt-support-scrim { position: fixed; inset: 0; z-index: 1; background: rgb(7 20 38 / .52); }
  .ppt-support-scrim:not([hidden]) { display: block; }
}

@media (min-width: 821px) and (max-height: 720px) {
  .legal-toc { padding: 12px 14px; }
  .legal-toc-title { margin-bottom: 6px; }
  .legal-toc a { padding: 4px 8px; font-size: 12px; line-height: 1.3; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}

@media print {
  .ppt-header, .ppt-footer, .ppt-support, .legal-toc-wrap, .legal-toc-toggle, .legal-toc { display: none !important; }
  .subpage-main, .legal-shell { background: #fff !important; }
  .legal-layout { display: block; padding: 0; }
  .legal-content { max-width: none; color: #000; }
}