/* Portal home — inspired by www.gduts.org */
:root {
  --gdu-blue: #1d4679;
  --gdu-blue-deep: #15365e;
  --gdu-gold: #ba8940;
  --gdu-ink: #222;
  --gdu-muted: #666;
  --gdu-line: #e5e5e5;
  --gdu-bg: #f3f3f3;
  --gdu-max: 1200px;
}
* { box-sizing: border-box; }
html, body {
  margin: 0;
  padding: 0;
  background: var(--gdu-bg);
  color: var(--gdu-ink);
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  font-size: 14px;
  line-height: 1.6;
}
a { color: var(--gdu-blue); text-decoration: none; }
a:hover { color: var(--gdu-gold); }
img { max-width: 100%; border: 0; display: block; }
.gdu-inner {
  width: min(100% - 32px, var(--gdu-max));
  margin: 0 auto;
}

/* Header */
.gdu-header { background: #fff; }
.gdu-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 88px;
  padding: 12px 0;
}
.gdu-brand { display: inline-flex; align-items: center; }
.gdu-logo { height: 56px; width: auto; }
.gdu-header-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  color: #888;
  font-size: 13px;
}
.gdu-header-meta a { color: #555; }
.gdu-header-meta a:hover { color: var(--gdu-blue); }
.gdu-user { color: var(--gdu-blue); font-weight: 700; }
.gdu-login-top { color: var(--gdu-gold) !important; font-weight: 700; }

.gdu-nav {
  background: var(--gdu-blue);
  box-shadow: 0 2px 0 rgba(0,0,0,.06);
}
.gdu-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
}
.gdu-nav li a {
  display: block;
  padding: 0 22px;
  height: 46px;
  line-height: 46px;
  color: #fff !important;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: .04em;
  transition: background .15s;
}
.gdu-nav li.on a,
.gdu-nav li a:hover {
  background: rgba(255,255,255,.12);
}

/* Banner */
.gdu-banner {
  position: relative;
  min-height: clamp(320px, 48vw, 460px);
  overflow: hidden;
  background: #0b1e36;
}
.gdu-slides { position: absolute; inset: 0; }
.gdu-slide {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transform: scale(1.04);
  transition: opacity .8s ease, transform 6s ease;
}
.gdu-slide.is-on {
  opacity: 1;
  transform: scale(1);
}
.gdu-banner-shade {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(10,28,52,.72) 0%, rgba(10,28,52,.28) 48%, rgba(10,28,52,.55) 100%);
  pointer-events: none;
}
.gdu-banner-panel {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.2fr .9fr;
  gap: 28px;
  align-items: center;
  min-height: clamp(320px, 48vw, 460px);
  padding: 36px 0;
}
.gdu-motto-cn {
  margin: 0 0 10px;
  color: #fff;
  font-size: clamp(42px, 6vw, 68px);
  font-weight: 800;
  letter-spacing: .28em;
  line-height: 1.1;
  text-shadow: 0 8px 28px rgba(0,0,0,.35);
}
.gdu-motto-cn span + span { margin-left: .35em; }
.gdu-motto-en {
  margin: 0 0 12px;
  color: rgba(255,255,255,.88);
  font-size: 13px;
  letter-spacing: .22em;
  text-transform: uppercase;
}
.gdu-motto-lead {
  margin: 0;
  max-width: 22em;
  color: rgba(255,255,255,.82);
  font-size: 15px;
  line-height: 1.7;
}

.gdu-login,
.gdu-welcome {
  background: rgba(255,255,255,.96);
  border: 1px solid rgba(255,255,255,.55);
  border-radius: 14px;
  box-shadow: 0 18px 40px rgba(8, 28, 52, .28);
  padding: 22px 22px 18px;
  backdrop-filter: blur(6px);
}
.gdu-login h2,
.gdu-welcome h2 {
  margin: 0 0 4px;
  color: var(--gdu-blue);
  font-size: 20px;
  font-weight: 800;
}
.gdu-login > p,
.gdu-welcome > p {
  margin: 0 0 14px;
  color: var(--gdu-muted);
  font-size: 13px;
}
.gdu-login form {
  display: grid;
  gap: 12px;
}
.gdu-login label {
  display: grid;
  gap: 6px;
  color: #444;
  font-size: 12px;
  font-weight: 700;
}
.gdu-login input {
  width: 100%;
  border: 1px solid #d5deea;
  border-radius: 10px;
  padding: 11px 12px;
  font-size: 14px;
  background: #f8fafc;
}
.gdu-login input:focus {
  outline: none;
  border-color: var(--gdu-blue);
  box-shadow: 0 0 0 3px rgba(29, 70, 121, .14);
  background: #fff;
}
.gdu-login button,
.gdu-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 10px;
  padding: 11px 16px;
  font-size: 14px;
  font-weight: 750;
  cursor: pointer;
  background: #eef3f8;
  color: var(--gdu-blue);
}
.gdu-login button,
.gdu-btn-primary {
  background: var(--gdu-blue);
  color: #fff !important;
}
.gdu-login button:hover,
.gdu-btn-primary:hover { background: var(--gdu-blue-deep); }
.gdu-btn:hover { background: #e2eaf3; }
.gdu-forgot {
  display: inline-block;
  margin-top: 10px;
  font-size: 12px;
  color: #888;
}
.gdu-login-error {
  margin: 0 0 10px;
  padding: 8px 10px;
  border-radius: 8px;
  background: #fdecec;
  color: #a33b3b;
  font-size: 13px;
}
.gdu-welcome-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.gdu-dots {
  position: absolute;
  left: 50%;
  bottom: 14px;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  gap: 8px;
}
.gdu-dots i {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255,255,255,.45);
  cursor: pointer;
}
.gdu-dots i.is-on { background: #fff; }

/* Main */
.gdu-main { padding: 28px 0 40px; }
.gdu-section-hd {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin: 0 0 14px;
  padding: 0 0 10px;
  border-bottom: 2px solid var(--gdu-blue);
}
.gdu-section-hd b {
  color: var(--gdu-blue);
  font-size: 20px;
  font-weight: 800;
  letter-spacing: .08em;
}
.gdu-section-hd a {
  order: 2;
  color: #999;
  font-size: 12px;
  letter-spacing: .08em;
}
.gdu-portal { margin: 0 0 28px; }
.gdu-portal-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.gdu-portal-card {
  display: block;
  background: #fff;
  border: 1px solid #e6ebf1;
  border-top: 3px solid var(--gdu-blue);
  border-radius: 12px;
  padding: 22px 18px;
  box-shadow: 0 8px 22px rgba(16, 42, 67, .05);
  transition: transform .15s, box-shadow .15s;
  color: inherit;
}
.gdu-portal-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 28px rgba(16, 42, 67, .1);
  color: inherit;
}
.gdu-portal-card h3 {
  margin: 0 0 8px;
  color: var(--gdu-blue);
  font-size: 18px;
}
.gdu-portal-card p {
  margin: 0;
  color: #667788;
  font-size: 13px;
  line-height: 1.65;
}

.gdu-cols {
  display: grid;
  grid-template-columns: 1.35fr .9fr;
  gap: 22px;
  margin: 0 0 28px;
}
.gdu-col {
  background: #fff;
  border: 1px solid #e8e8e8;
  padding: 18px 18px 10px;
}
.gdu-feature {
  position: relative;
  margin: 0 0 14px;
  overflow: hidden;
}
.gdu-feature img {
  width: 100%;
  height: 220px;
  object-fit: cover;
}
.gdu-feature-cap {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 12px 14px;
  color: #fff;
  font-weight: 700;
  background: linear-gradient(180deg, transparent, rgba(0,0,0,.65));
}
.gdu-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.gdu-list li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 10px 0;
  border-bottom: 1px dashed #ececec;
}
.gdu-list li:last-child { border-bottom: 0; }
.gdu-list b {
  flex: 0 0 46px;
  color: var(--gdu-gold);
  font-size: 13px;
  font-weight: 800;
}
.gdu-list a {
  color: #333;
  flex: 1;
}
.gdu-list a:hover { color: var(--gdu-blue); }
.gdu-side-login {
  margin: 18px 0 12px;
  padding: 16px;
  background: linear-gradient(180deg, #f7fafc, #eef4fa);
  border: 1px solid #dce6f0;
  border-radius: 10px;
}
.gdu-side-login h3 {
  margin: 0 0 6px;
  color: var(--gdu-blue);
  font-size: 16px;
}
.gdu-side-login p {
  margin: 0 0 12px;
  color: #667788;
  font-size: 13px;
}

.gdu-ads {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin: 0 0 22px;
}
.gdu-ads img {
  width: 100%;
  height: 92px;
  object-fit: cover;
  background: #fff;
  border: 1px solid #e8e8e8;
}
.gdu-ads-2 { grid-template-columns: 1fr 1fr; }
.gdu-ads-2 img { height: 78px; }
.gdu-three {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin: 0 0 22px;
}
.gdu-three .gdu-col {
  background: #fff;
  border: 1px solid #e8e8e8;
  padding: 16px 16px 8px;
}
.gdu-qr {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 18px !important;
}
.gdu-qr img {
  width: min(100%, 280px);
  height: auto;
}
.gdu-friend {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 18px;
  align-items: center;
  background: #fff;
  border: 1px solid #e8e8e8;
  padding: 14px 18px;
  margin: 0 0 8px;
}
.gdu-friend-lab { color: #666; font-weight: 700; }
.gdu-friend-links { display: flex; flex-wrap: wrap; gap: 14px; }
.gdu-friend-links a { color: #333; }

/* Inner pages */
.gdu-page { padding-top: 24px; }
.gdu-page-layout {
  display: grid;
  grid-template-columns: 250px 1fr;
  gap: 20px;
  align-items: start;
}
.gdu-side-box {
  background: #fff;
  border: 1px solid #e8e8e8;
  padding: 16px;
  margin: 0 0 14px;
}
.gdu-side-box h2 {
  margin: 0;
  color: var(--gdu-blue);
  font-size: 22px;
}
.gdu-side-en {
  margin: 2px 0 12px;
  color: #bbb;
  font-size: 12px;
  letter-spacing: .12em;
}
.gdu-side-nav { list-style: none; margin: 0; padding: 0; }
.gdu-side-nav li a {
  display: block;
  padding: 10px 8px;
  border-bottom: 1px dashed #ececec;
  color: #444;
}
.gdu-side-nav li.on a,
.gdu-side-nav li a:hover {
  color: var(--gdu-blue);
  font-weight: 700;
}
.gdu-side-contact h3 {
  margin: 0 0 10px;
  color: var(--gdu-blue);
  font-size: 16px;
}
.gdu-side-contact p { margin: 0 0 6px; color: #666; font-size: 13px; line-height: 1.55; }
.gdu-page-main {
  background: #fff;
  border: 1px solid #e8e8e8;
  padding: 20px 24px 28px;
  min-height: 420px;
}
.gdu-breadcrumb { color: #999; font-size: 12px; margin: 0 0 10px; }
.gdu-page-title {
  margin: 0 0 18px;
  padding: 0 0 12px;
  border-bottom: 2px solid var(--gdu-blue);
  color: var(--gdu-blue);
  font-size: 24px;
}
.gdu-prose p {
  margin: 0 0 14px;
  color: #333;
  line-height: 1.9;
  text-indent: 2em;
}
.gdu-list span { color: #333; }
.gdu-card-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 14px; }
.gdu-card-item {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 14px;
  border: 1px solid #eee;
  padding: 12px;
}
.gdu-card-item img { width: 160px; height: 110px; object-fit: cover; }
.gdu-card-item h3 { margin: 0 0 8px; color: var(--gdu-blue); font-size: 18px; }
.gdu-card-item p { margin: 0; color: #666; }
.gdu-article h2 { margin: 0 0 8px; color: #222; font-size: 22px; }
.gdu-article-meta { color: #999; font-size: 13px; margin: 0 0 16px; }
.gdu-article-img { width: 100%; max-height: 360px; object-fit: cover; margin: 0 0 16px; }
.gdu-back { margin-top: 24px; }
.gdu-contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
.gdu-contact-card {
  border: 1px solid #eee;
  background: #fafbfc;
  padding: 16px;
}
.gdu-contact-card h3 { margin: 0 0 10px; color: var(--gdu-blue); }
.gdu-contact-card p { margin: 0 0 4px; color: #444; line-height: 1.7; }

/* E-library catalog */
.gdu-elib-intro p {
  text-indent: 0;
  margin: 0 0 8px;
  font-size: 13px;
  line-height: 1.7;
  color: #555;
}
.gdu-elib-layout { grid-template-columns: 210px 1fr; }
.gdu-elib { margin-top: 10px; }
.gdu-elib-searchbox {
  margin: 0 0 12px;
  border: 1px solid #c5d0dc;
  background: #fff;
  box-shadow: 0 1px 0 rgba(16, 42, 67, .03);
}
.gdu-elib-tabs {
  display: flex;
  gap: 0;
  border-bottom: 1px solid #d7e0ea;
  background: linear-gradient(180deg, #f8fafc, #eef3f8);
}
.gdu-elib-tabs button {
  appearance: none;
  border: 0;
  border-right: 1px solid #d7e0ea;
  background: transparent;
  color: #456;
  padding: 10px 18px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
}
.gdu-elib-tabs button:last-child { border-right: 0; }
.gdu-elib-tabs button.on {
  background: #fff;
  color: var(--gdu-blue);
  box-shadow: inset 0 2px 0 var(--gdu-blue);
}
.gdu-elib-panel { display: none; padding: 14px 16px 12px; }
.gdu-elib-panel.is-on { display: block; }
.gdu-elib-hint {
  margin: 0 0 12px;
  color: #778899;
  font-size: 12px;
  line-height: 1.6;
}
.gdu-elib-basic-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}
.gdu-elib-basic-row label,
.gdu-elib-adv-row label {
  color: #334;
  font-size: 13px;
  font-weight: 600;
  white-space: nowrap;
}
.gdu-elib-basic-row input[type="search"] {
  flex: 1 1 260px;
  min-width: 180px;
  height: 34px;
  padding: 0 10px;
  border: 1px solid #b8c6d6;
  background: #fff;
  font-size: 13px;
}
.gdu-elib-adv {
  display: grid;
  gap: 8px;
  max-width: 640px;
}
.gdu-elib-adv-row {
  display: grid;
  grid-template-columns: 118px 64px 1fr;
  gap: 8px;
  align-items: center;
}
.gdu-elib-adv-row label { text-align: right; }
.gdu-elib-adv-row input[type="text"],
.gdu-elib-custom-row input[type="text"] {
  height: 32px;
  padding: 0 10px;
  border: 1px solid #b8c6d6;
  background: #fff;
  font-size: 13px;
  width: 100%;
  box-sizing: border-box;
}
.gdu-elib-op,
.gdu-elib-type {
  height: 32px;
  padding: 0 8px;
  border: 1px solid #7eb0e0;
  background: linear-gradient(180deg, #f4f9ff, #e7f1fb);
  color: #1a5fb4;
  font-size: 12px;
  border-radius: 2px;
}
.gdu-elib-custom-rows {
  display: grid;
  gap: 8px;
  max-width: 720px;
}
.gdu-elib-custom-row {
  display: grid;
  grid-template-columns: 118px 1fr 118px;
  gap: 8px;
  align-items: center;
}
.gdu-elib-custom-ops {
  display: flex;
  gap: 8px;
  margin: 10px 0 12px;
}
.gdu-elib-iconbtn {
  width: 30px;
  height: 30px;
  border: 1px solid #8eb6df;
  background: #f4f9ff;
  color: #1a5fb4;
  font-size: 18px;
  line-height: 1;
  cursor: pointer;
  border-radius: 3px;
}
.gdu-elib-iconbtn:hover { background: #e4f0fb; }
.gdu-elib-live {
  display: inline-flex;
  align-items: center;
  height: 28px;
  padding: 0 10px;
  border: 1px solid #9ec0e4;
  border-radius: 999px;
  background: #eef6ff;
  color: var(--gdu-blue);
  font-size: 12px;
  font-weight: 700;
  white-space: nowrap;
}
.gdu-elib-live.is-busy {
  border-color: var(--gdu-gold);
  background: #fff8ee;
  color: #a66a12;
}
.gdu-elib-live-line { margin: 8px 0 0; }
.gdu-elib-custom-ops .gdu-elib-live { margin-left: 4px; }
.gdu-elib-meta {
  margin: 0;
  padding: 0 16px 12px;
  color: #555;
  font-size: 13px;
}
.gdu-elib-meta b { color: #c0392b; }
@media (max-width: 720px) {
  .gdu-elib-adv-row,
  .gdu-elib-custom-row { grid-template-columns: 1fr; }
  .gdu-elib-adv-row label { text-align: left; }
  .gdu-elib-tabs button { flex: 1; padding: 10px 8px; font-size: 13px; }
}
.gdu-elib-navbox {
  margin: 0 0 10px;
  padding: 10px 12px 6px;
  border: 1px solid #cfd8e3;
  background: #fff;
}
.gdu-elib-navbox h3 {
  margin: 0 0 8px;
  color: var(--gdu-blue);
  font-size: 14px;
}
.gdu-elib-navgrid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 2px 12px;
}
.gdu-elib-navgrid a {
  padding: 3px 0;
  color: #333;
  font-size: 13px;
  line-height: 1.45;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.gdu-elib-navgrid a i {
  font-style: normal;
  color: #888;
}
.gdu-elib-navgrid a.on,
.gdu-elib-navgrid a:hover {
  color: var(--gdu-blue);
  font-weight: 700;
}
.gdu-elib-empty {
  margin: 24px 0;
  color: #999;
  text-align: center;
}
.gdu-elib-list { background: #fff; }
.gdu-elib-item {
  padding: 10px 4px 12px;
  border-bottom: 2px solid #4a7bb7;
}
.gdu-elib-item:last-child { border-bottom: 2px solid #4a7bb7; }
.gdu-elib-item h3 {
  margin: 0 0 6px;
  color: #1a5fb4;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.4;
}
.gdu-elib-meta-list {
  list-style: none;
  margin: 0;
  padding: 0 0 8px;
  display: grid;
  gap: 2px;
}
.gdu-elib-meta-list li {
  color: #333;
  font-size: 13px;
  line-height: 1.55;
}
.gdu-elib-lab {
  color: #1a5fb4;
  font-weight: 700;
}
.gdu-elib-callno {
  color: #1a5fb4;
  font-family: ui-monospace, Menlo, Consolas, monospace;
  font-size: 12px;
}
.gdu-elib-intro-line {
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px dashed #c9d3de;
  color: #444;
  font-size: 13px;
  line-height: 1.65;
}
.gdu-elib-facet h2 {
  font-size: 16px;
  margin: 0 0 8px;
}
.gdu-elib-facet-sub {
  margin: 0 0 6px;
  color: #666;
  font-size: 13px;
  font-weight: 700;
}
.gdu-elib-facet dl { margin: 0; }
.gdu-elib-facet dt {
  margin: 8px 0 4px;
  color: var(--gdu-blue);
  font-size: 13px;
  font-weight: 700;
}
.gdu-elib-facet dd {
  margin: 0;
  padding: 4px 6px;
  background: #f3f7fb;
  border: 1px solid #dce6f0;
  color: #444;
  font-size: 13px;
}
.gdu-elib-clear {
  margin-left: 6px;
  color: #c0392b !important;
  font-weight: 700;
}
.gdu-elib-checks {
  list-style: none;
  margin: 0;
  padding: 0;
}
.gdu-elib-checks li a {
  display: grid;
  grid-template-columns: 18px 1fr auto;
  gap: 6px;
  align-items: center;
  padding: 6px 2px;
  border-bottom: 1px dashed #e4eaf1;
  color: #333;
  font-size: 13px;
}
.gdu-elib-checks li:last-child a { border-bottom: 0; }
.gdu-elib-checks li.on a,
.gdu-elib-checks li a:hover { color: var(--gdu-blue); }
.gdu-elib-checks em {
  color: #c0392b;
  font-style: normal;
  font-weight: 700;
  font-size: 12px;
}
.gdu-elib-cb {
  width: 14px;
  height: 14px;
  border: 1px solid #8aa0b5;
  background: #fff;
  border-radius: 2px;
  position: relative;
}
.gdu-elib-cb.is-on {
  border-color: var(--gdu-blue);
  background: var(--gdu-blue);
}
.gdu-elib-cb.is-on::after {
  content: "";
  position: absolute;
  left: 3px;
  top: 0;
  width: 4px;
  height: 8px;
  border: solid #fff;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}
.gdu-elib-pager {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  align-items: center;
  margin: 8px 0;
  font-size: 13px;
  white-space: nowrap;
}
.gdu-elib-pager a,
.gdu-elib-pager span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 28px;
  height: 28px;
  padding: 0 7px;
  border: 1px solid #cfd8e3;
  background: #fff;
  color: #444;
  font-size: 13px;
}
.gdu-elib-pager a:hover { border-color: var(--gdu-blue); color: var(--gdu-blue); }
.gdu-elib-pager span.on {
  background: var(--gdu-blue);
  border-color: var(--gdu-blue);
  color: #fff;
  font-weight: 700;
}
.gdu-elib-pager-info {
  border: 0 !important;
  background: transparent !important;
  color: #666 !important;
  padding-left: 0 !important;
}
@media (max-width: 720px) {
  .gdu-elib-navgrid { grid-template-columns: 1fr 1fr; }
}

/* Footer */
.gdu-footer {
  background: var(--gdu-blue-deep);
  color: rgba(255,255,255,.78);
  padding: 28px 0 32px;
  text-align: center;
}
.gdu-foot-links {
  margin: 0 0 12px;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
}
.gdu-foot-links a { color: #fff; }
.gdu-footer p { margin: 4px 0; font-size: 12px; }

@media (max-width: 960px) {
  .gdu-banner-panel,
  .gdu-cols,
  .gdu-three,
  .gdu-ads,
  .gdu-page-layout,
  .gdu-contact-grid { grid-template-columns: 1fr 1fr; }
  .gdu-nav li a { padding: 0 12px; font-size: 14px; }
  .gdu-card-item { grid-template-columns: 120px 1fr; }
}
@media (max-width: 720px) {
  .gdu-header-row { flex-direction: column; align-items: flex-start; min-height: 0; }
  .gdu-header-meta { justify-content: flex-start; }
  .gdu-logo { height: 48px; }
  .gdu-nav ul { justify-content: flex-start; overflow-x: auto; }
  .gdu-banner-panel,
  .gdu-cols,
  .gdu-three,
  .gdu-ads,
  .gdu-ads-2,
  .gdu-page-layout,
  .gdu-contact-grid,
  .gdu-card-item { grid-template-columns: 1fr; }
  .gdu-motto-cn { letter-spacing: .18em; }
  .gdu-feature img { height: 180px; }
}