/* ==========================================================================
   泉州华光职业学院 · 科技与工程学院
   设计语言：「硬核工科 · 石墨钢蓝」
   石墨黑基底 × 荧光Volt绿 × 安全橙 · 硬切角 · 蓝图网格 · HUD角标
   ========================================================================== */

@font-face{font-family:'Noto Sans SC';font-style:normal;font-weight:100 900;font-display:swap;src:url('/fonts/NotoSansSC-VariableFont_wght.ttf') format('truetype')}
@font-face{font-family:'Quicksand';font-style:normal;font-weight:300 700;font-display:swap;src:url('/fonts/Quicksand-VariableFont_wght.ttf') format('truetype')}

:root {
  /* 色板 */
  --graphite: #14181f;
  --graphite-soft: #1c222c;
  --steel: #262f3d;
  --volt: #c9f24d;
  --volt-deep: #9fce2f;
  --orange: #ff8a2a;
  --concrete: #f0f2f4;
  --card: #ffffff;
  --ink: #23282f;
  --ink-soft: #5a6472;
  --ink-faint: #97a0ac;
  --line: #dfe3e8;

  /* 字体 */
  --font-tech: "Quicksand", "Noto Sans SC", sans-serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;

  /* 布局 */
  --container: 1200px;
  --radius: 4px;
  --clip: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 16px 100%, 0 calc(100% - 16px));
  --clip-sm: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 10px 100%, 0 calc(100% - 10px));
  --shadow-card: 0 8px 24px rgba(20, 24, 31, 0.1);
  --shadow-hover: 0 18px 40px rgba(20, 24, 31, 0.2);
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  font-size: 15px; line-height: 1.75; color: var(--ink);
  background-color: var(--concrete);
  background-image:
    linear-gradient(rgba(38, 47, 61, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(38, 47, 61, 0.035) 1px, transparent 1px);
  background-size: 30px 30px;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; transition: color 0.25s var(--ease); }
a:hover { color: var(--graphite); }
img { display: block; max-width: 100%; }
ul, ol { list-style: none; }
.container { width: min(var(--container), calc(100% - 40px)); margin-inline: auto; }

/* 警示条纹 */
.hazard {
  height: 7px;
  background: repeating-linear-gradient(-45deg, var(--orange) 0 12px, var(--graphite) 12px 24px);
}

/* ============================== 顶部信息条 ============================== */
.topbar { background: #0d1015; color: rgba(220, 228, 238, 0.7); font-size: 12.5px; letter-spacing: 0.04em; }
.topbar-inner { display: flex; align-items: center; justify-content: space-between; height: 34px; }
.topbar .date { display: flex; align-items: center; gap: 8px; font-family: var(--font-tech); font-size: 12px; letter-spacing: 0.08em; }
.topbar .date::before { content: ""; width: 7px; height: 7px; background: var(--volt); clip-path: polygon(50% 0, 100% 50%, 50% 100%, 0 50%); }
.topbar-links { display: flex; align-items: center; gap: 18px; }
.topbar-links a:hover { color: var(--volt); }
.topbar-links .sep { width: 1px; height: 10px; background: rgba(255, 255, 255, 0.16); }

/* ============================== 页眉 ============================== */
.site-header {
  background: var(--graphite);
  background-image:
    linear-gradient(rgba(201, 242, 77, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(201, 242, 77, 0.04) 1px, transparent 1px);
  background-size: 30px 30px;
  border-bottom: 1px solid rgba(201, 242, 77, 0.16);
  position: relative;
}
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 22px 0 18px; }

.brand { display: flex; align-items: center; gap: 18px; min-width: 0; }
.emblem {
  width: 62px; height: 62px; flex: none; background: var(--graphite-soft);
  border: 1.5px solid var(--volt); clip-path: var(--clip-sm);
  display: grid; place-items: center; position: relative;
  box-shadow: inset 0 0 18px rgba(201, 242, 77, 0.18), 0 6px 18px rgba(0, 0, 0, 0.4);
}
.emblem span { font-family: var(--font-tech); font-weight: 700; font-size: 30px; color: var(--volt); text-shadow: 0 0 14px rgba(201, 242, 77, 0.6); }
.brand-text .school {
  font-size: 11.5px; letter-spacing: 0.4em; color: rgba(220, 228, 238, 0.55);
  margin-bottom: 3px; padding-left: 0.4em;
}
.brand-text h1 {
  font-family: var(--font-body); font-weight: 900;
  font-size: 29px; letter-spacing: 0.1em; color: #fff; line-height: 1.2; white-space: nowrap;
}
.brand-text .en {
  font-family: var(--font-tech); font-size: 10.5px; font-weight: 600;
  letter-spacing: 0.26em; text-transform: uppercase; color: var(--volt); margin-top: 3px;
}

.header-search { flex: none; }
.header-search form {
  display: flex; align-items: center; width: 250px;
  border: 1px solid rgba(255, 255, 255, 0.22); clip-path: var(--clip-sm); overflow: hidden;
  background: rgba(255, 255, 255, 0.06); transition: border-color 0.3s;
}
.header-search form:focus-within { border-color: var(--volt); background: rgba(201, 242, 77, 0.07); }
.header-search input {
  flex: 1; min-width: 0; border: 0; outline: 0; background: none;
  padding: 9px 16px; font-size: 13px; color: #fff;
}
.header-search input::placeholder { color: rgba(220, 228, 238, 0.45); }
.header-search button {
  flex: none; border: 0; cursor: pointer; width: 44px; height: 38px;
  background: var(--volt); color: var(--graphite);
  display: grid; place-items: center;
}
.search-glass { width: 14px; height: 14px; border: 2px solid currentColor; border-radius: 50%; position: relative; transform: rotate(45deg); }
.search-glass::after { content: ""; position: absolute; right: -6px; top: 8px; width: 7px; height: 2px; background: currentColor; }

/* ============================== 主导航 ============================== */
.main-nav { position: relative; z-index: 50; background: var(--graphite-soft); border-top: 1px solid rgba(255, 255, 255, 0.07); }
.nav-list { display: flex; align-items: stretch; }
.nav-item { flex: 1; position: relative; }
.nav-item > a {
  display: block; text-align: center; padding: 14px 4px 12px;
  color: rgba(228, 235, 244, 0.88); font-size: 15.5px; font-weight: 500;
  letter-spacing: 0.12em; position: relative;
}
.nav-item + .nav-item::before {
  content: ""; position: absolute; left: 0; top: 50%; transform: translateY(-50%);
  width: 1px; height: 15px; background: rgba(255, 255, 255, 0.1);
}
.nav-item > a::after {
  content: ""; position: absolute; left: 0; right: 100%; bottom: 0; height: 3px;
  background: var(--volt); box-shadow: 0 0 10px rgba(201, 242, 77, 0.8);
  transition: right 0.35s var(--ease);
}
.nav-item:hover > a { color: var(--volt); }
.nav-item.active > a { color: var(--volt); }
.nav-item:hover > a::after, .nav-item.active > a::after { right: 0; }

.dropdown {
  position: absolute; top: 100%; left: 0; min-width: 165px;
  background: var(--graphite); border-top: 2px solid var(--volt);
  box-shadow: 0 22px 44px rgba(0, 0, 0, 0.45);
  padding: 6px 0; clip-path: polygon(0 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%);
  opacity: 0; visibility: hidden; transform: translateY(10px);
  transition: opacity 0.28s var(--ease), transform 0.28s var(--ease), visibility 0.28s;
}
.nav-item:hover .dropdown, .nav-item:focus-within .dropdown { opacity: 1; visibility: visible; transform: translateY(0); }
.dropdown a {
  display: flex; align-items: center; gap: 9px;
  padding: 9.5px 20px; font-size: 13.5px; color: rgba(225, 232, 241, 0.85); white-space: nowrap;
}
.dropdown a::before {
  content: ""; width: 5px; height: 5px; background: var(--volt); opacity: 0.5;
  clip-path: polygon(50% 0, 100% 50%, 50% 100%, 0 50%); flex: none;
}
.dropdown a:hover { background: rgba(201, 242, 77, 0.09); color: var(--volt); }
.dropdown a:hover::before { opacity: 1; }

.nav-toggle { display: none; }

/* ============================== 轮播图 ============================== */
.hero-carousel { position: relative; overflow: hidden; background: var(--graphite); }
.carousel-track { position: relative; height: 470px; }
.carousel-slide {
  position: absolute; inset: 0; opacity: 0; z-index: 1;
  transition: opacity 1.1s var(--ease); pointer-events: none;
}
.carousel-slide.active { opacity: 1; z-index: 2; pointer-events: auto; }
.carousel-slide img { width: 100%; height: 100%; object-fit: cover; transform: scale(1.07); transition: transform 7s linear; }
.carousel-slide.active img { transform: scale(1); }
.carousel-slide::after {
  content: ""; position: absolute; inset: 0;
  background:
    linear-gradient(90deg, rgba(13, 16, 21, 0.85) 0%, rgba(13, 16, 21, 0.4) 38%, transparent 66%),
    linear-gradient(180deg, transparent 55%, rgba(13, 16, 21, 0.6) 100%);
}
.carousel-caption { position: absolute; inset: 0; z-index: 3; display: flex; align-items: center; color: #fff; pointer-events: none; }
.caption-inner { max-width: 640px; }
.caption-kicker {
  display: inline-block; font-family: var(--font-tech); font-size: 12.5px; font-weight: 600;
  letter-spacing: 0.34em; text-transform: uppercase; color: var(--volt);
  margin-bottom: 14px; padding: 5px 14px; border: 1px solid rgba(201, 242, 77, 0.5);
  background: rgba(13, 16, 21, 0.5); backdrop-filter: blur(4px);
}
.carousel-caption h2 {
  font-family: var(--font-body); font-weight: 900;
  font-size: 44px; letter-spacing: 0.1em; line-height: 1.35;
  text-shadow: 0 4px 26px rgba(0, 0, 0, 0.6);
}
.carousel-caption h2 .volt { color: var(--volt); }
.carousel-caption p {
  margin-top: 12px; font-size: 15px; letter-spacing: 0.12em;
  color: rgba(230, 238, 246, 0.88); text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
}

.carousel-dots { position: absolute; right: calc((100% - min(var(--container), 100% - 40px)) / 2); bottom: 26px; z-index: 4; display: flex; gap: 10px; }
.carousel-dots button {
  width: 30px; height: 4px; border: 0; cursor: pointer;
  background: rgba(255, 255, 255, 0.35); position: relative; overflow: hidden;
  clip-path: polygon(0 0, 100% 0, 96% 100%, 4% 100%); transition: background 0.3s;
}
.carousel-dots button.active { background: rgba(255, 255, 255, 0.4); }
.carousel-dots button.active::after {
  content: ""; position: absolute; inset: 0; width: 0;
  background: var(--volt); animation: dot-progress 6s linear forwards;
}
@keyframes dot-progress { from { width: 0; } to { width: 100%; } }

.carousel-arrow {
  position: absolute; top: 50%; transform: translateY(-50%); z-index: 4;
  width: 46px; height: 46px; clip-path: var(--clip-sm); cursor: pointer;
  border: 0; background: rgba(13, 16, 21, 0.55); color: var(--volt);
  font-size: 18px; display: grid; place-items: center;
  backdrop-filter: blur(4px); opacity: 0; transition: opacity 0.35s var(--ease), background 0.3s;
}
.hero-carousel:hover .carousel-arrow { opacity: 1; }
.carousel-arrow:hover { background: var(--volt); color: var(--graphite); }
.carousel-arrow.prev { left: 26px; }
.carousel-arrow.next { right: 26px; }

/* ============================== 章节标题 ============================== */
.section { padding: 52px 0 6px; }
.sec-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 26px; }
.sec-title { display: flex; align-items: center; gap: 14px; }
.sec-title .idx {
  font-family: var(--font-tech); font-weight: 700; font-size: 15px; letter-spacing: 0.14em;
  color: var(--graphite); background: var(--volt); padding: 3px 10px 2px;
  clip-path: polygon(0 0, 100% 0, calc(100% - 8px) 100%, 0 100%);
}
.sec-title .texts { display: flex; flex-direction: column; }
.sec-title .zh {
  font-weight: 900; font-size: 26px; letter-spacing: 0.14em; color: var(--graphite); line-height: 1.3;
}
.sec-title .en {
  font-family: var(--font-tech); font-size: 10.5px; font-weight: 600;
  letter-spacing: 0.3em; text-transform: uppercase; color: var(--ink-faint);
}
.sec-head .rule { flex: 1; height: 2px; background: repeating-linear-gradient(90deg, var(--ink-faint) 0 8px, transparent 8px 16px); opacity: 0.35; }
.sec-more {
  flex: none; display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-tech); font-size: 12.5px; font-weight: 600; letter-spacing: 0.16em;
  color: var(--graphite); padding: 8px 18px; border: 1.5px solid var(--graphite);
  clip-path: var(--clip-sm); transition: all 0.3s var(--ease); text-transform: uppercase;
}
.sec-more:hover { background: var(--graphite); color: var(--volt); }
.sec-more .arrow { transition: transform 0.3s var(--ease); }
.sec-more:hover .arrow { transform: translateX(3px); }

/* ============================== 专业阵列 ============================== */
.majors-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; padding-bottom: 6px; }
.major-card {
  position: relative; background: var(--card); border: 1px solid var(--line);
  clip-path: var(--clip); padding: 24px 24px 22px;
  box-shadow: var(--shadow-card); overflow: hidden;
  transition: transform 0.4s var(--ease), box-shadow 0.4s var(--ease), border-color 0.4s;
}
.major-card::before {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 4px;
  background: var(--volt); opacity: 0; transition: opacity 0.3s;
}
.major-card:hover { transform: translateY(-7px); box-shadow: var(--shadow-hover); border-color: var(--volt-deep); }
.major-card:hover::before { opacity: 1; }
.major-card .top { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; }
.major-card .icon-chip {
  width: 54px; height: 54px; clip-path: var(--clip-sm);
  background: var(--graphite); color: var(--volt); display: grid; place-items: center;
  box-shadow: inset 0 0 16px rgba(201, 242, 77, 0.15);
  transition: transform 0.4s var(--ease);
}
.major-card:hover .icon-chip { transform: rotate(-5deg) scale(1.05); background: var(--volt); color: var(--graphite); }
.major-card.warm .icon-chip { color: var(--orange); box-shadow: inset 0 0 16px rgba(255, 138, 42, 0.16); }
.major-card.warm:hover .icon-chip { background: var(--orange); color: #fff; }
.major-card.warm::before { background: var(--orange); }
.major-card .no {
  font-family: var(--font-tech); font-weight: 700; font-size: 21px; color: var(--line);
  letter-spacing: 0.05em; transition: color 0.3s;
}
.major-card:hover .no { color: var(--volt-deep); }
.major-card h3 { margin-top: 15px; font-size: 16.5px; font-weight: 700; letter-spacing: 0.03em; color: var(--graphite); line-height: 1.5; }
.major-card .desc { font-size: 12.5px; color: var(--ink-soft); margin-top: 7px; line-height: 1.75; }
.major-card .link {
  display: inline-flex; align-items: center; gap: 6px; margin-top: 13px;
  font-family: var(--font-tech); font-size: 11px; font-weight: 700; letter-spacing: 0.16em;
  color: var(--graphite); opacity: 0.75; text-transform: uppercase;
}
.major-card .link:hover { opacity: 1; gap: 9px; color: var(--graphite); }

/* ============================== 新闻三栏 ============================== */
.news-tri { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.95fr) minmax(285px, 1.05fr); gap: 24px; align-items: start; }
.news-tri > * { min-width: 0; }
.news-tri .news-main { grid-row: auto / span 2; }
.news-tri .col-card.c-full { grid-column: 2 / 4; }
.news-tri .two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 0 26px; padding: 2px 22px 14px; }
.news-tri .two-col li { min-width: 0; }

.news-main .featured { position: relative; clip-path: var(--clip); overflow: hidden; box-shadow: var(--shadow-card); display: block; }
.news-main .featured img { width: 100%; height: 248px; object-fit: cover; transition: transform 0.8s var(--ease); }
.news-main .featured:hover img { transform: scale(1.05); }
.news-main .featured .cap {
  position: absolute; left: 0; right: 0; bottom: 0; padding: 38px 20px 15px;
  background: linear-gradient(180deg, transparent, rgba(13, 16, 21, 0.88)); color: #fff;
}
.news-main .featured .cap .tag {
  display: inline-block; font-family: var(--font-tech); font-size: 10px; font-weight: 700; letter-spacing: 0.22em;
  color: var(--graphite); background: var(--volt); padding: 2px 10px 1px; text-transform: uppercase;
}
.news-main .featured .cap h3 { font-size: 16.5px; font-weight: 700; line-height: 1.6; margin-top: 8px; }
.news-main .featured:hover .cap h3 { color: var(--volt); }

.news-main .rows { margin-top: 8px; }
.nrow { display: flex; align-items: center; gap: 13px; padding: 12px 8px; transition: background 0.25s; }
.nrow:hover { background: rgba(201, 242, 77, 0.12); }
.nrow .sq {
  flex: none; width: 8px; height: 8px; background: var(--stone, #b4bcc7);
  background: #b4bcc7; clip-path: polygon(50% 0, 100% 50%, 50% 100%, 0 50%); transition: background 0.25s;
}
.nrow:hover .sq { background: var(--volt-deep); }
.nrow h3 {
  flex: 1; min-width: 0; font-size: 14.5px; font-weight: 500;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.nrow:hover h3 { color: var(--graphite); }
.nrow .time { flex: none; font-family: var(--font-tech); font-size: 12px; font-weight: 600; color: var(--ink-faint); letter-spacing: 0.04em; }

/* ===== 新闻主栏 mini 轮播 ===== */
.mini-carousel { position: relative; clip-path: var(--clip); overflow: hidden; box-shadow: var(--shadow-card); background: #14181f; }
.mini-carousel .carousel-track { height: 238px; }
.mini-carousel .carousel-slide { display: block; }
.mini-carousel .carousel-slide::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 55%, rgba(20, 24, 31, 0.92)); }
.mini-carousel .mini-cap { position: absolute; left: 0; right: 0; bottom: 0; z-index: 3; padding: 30px 16px 12px; color: #fff; }
.mini-carousel .mini-cap .tag { display: inline-block; font-family: var(--font-tech); font-size: 9px; font-weight: 700; letter-spacing: 0.18em; color: var(--volt); text-transform: uppercase; margin-bottom: 4px; }
.mini-carousel .mini-cap h3 { font-size: 14.5px; font-weight: 800; line-height: 1.55; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.mini-carousel:hover .mini-cap h3 { color: var(--volt); }
.mini-carousel .carousel-dots { right: 14px; bottom: 10px; gap: 6px; }
.mini-carousel .carousel-dots button { width: 7px; height: 7px; }
.mini-carousel .carousel-dots button.active { width: 18px; }
.mini-carousel .carousel-arrow { width: 28px; height: 28px; font-size: 12px; background: rgba(20, 24, 31, 0.55); }
.mini-carousel:hover .carousel-arrow { opacity: 1; }

.col-card { background: var(--card); border: 1px solid var(--line); clip-path: var(--clip); box-shadow: var(--shadow-card); overflow: hidden; }
.col-card .band { height: 4px; }
.col-card.c-volt .band { background: var(--volt); }
.col-card.c-orange .band { background: var(--orange); }
.col-card.c-graphite .band { background: var(--steel); }
.col-card .head { display: flex; align-items: center; justify-content: space-between; padding: 16px 22px 12px; }
.col-card .head h3 { display: flex; align-items: center; gap: 10px; font-size: 17px; font-weight: 900; letter-spacing: 0.1em; color: var(--graphite); }
.col-card .head h3::before { content: ""; width: 9px; height: 9px; clip-path: polygon(50% 0, 100% 50%, 50% 100%, 0 50%); }
.col-card.c-volt .head h3::before { background: var(--volt-deep); }
.col-card.c-orange .head h3::before { background: var(--orange); }
.col-card.c-graphite .head h3::before { background: var(--steel); }
.col-card .head .more { font-family: var(--font-tech); font-size: 11px; font-weight: 700; letter-spacing: 0.14em; color: var(--ink-faint); text-transform: uppercase; }
.col-card .head .more:hover { color: var(--graphite); }
.col-card ul { padding: 2px 22px 16px; }
.col-card li { border-bottom: 1px dashed var(--line); }
.col-card li:last-child { border-bottom: 0; }
.col-card li a {
  display: block; padding: 10.5px 0 10.5px 16px; font-size: 13.5px; color: var(--ink-soft);
  position: relative; white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.col-card li a::before {
  content: ""; position: absolute; left: 0; top: 50%; transform: translateY(-50%);
  width: 6px; height: 6px; background: #c3cad3; transition: background 0.2s;
}
.col-card li a:hover { color: var(--graphite); }
.col-card li a:hover::before { background: var(--volt-deep); }

/* ============================== 实验室矩阵（暗色带） ============================== */
.lab-band {
  margin-top: 18px; padding: 46px 0 50px; position: relative; overflow: hidden;
  background: var(--graphite);
  background-image:
    linear-gradient(rgba(201, 242, 77, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(201, 242, 77, 0.045) 1px, transparent 1px);
  background-size: 30px 30px;
  border-top: 1px solid rgba(201, 242, 77, 0.2);
  border-bottom: 1px solid rgba(201, 242, 77, 0.2);
}
.lab-band .sec-title .zh { color: #fff; }
.lab-band .sec-title .en { color: rgba(220, 228, 238, 0.5); }
.lab-band .sec-title .idx { background: var(--volt); }
.lab-band .sec-head .rule { background: repeating-linear-gradient(90deg, rgba(201, 242, 77, 0.4) 0 8px, transparent 8px 16px); opacity: 0.6; }
.lab-band .sec-more { color: var(--volt); border-color: rgba(201, 242, 77, 0.55); }
.lab-band .sec-more:hover { background: var(--volt); color: var(--graphite); border-color: var(--volt); }
.lab-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.lab-item {
  position: relative; padding: 20px 20px 18px;
  background: rgba(255, 255, 255, 0.045); border: 1px solid rgba(255, 255, 255, 0.12);
  transition: all 0.35s var(--ease);
}
.lab-item::before, .lab-item::after { content: ""; position: absolute; width: 14px; height: 14px; transition: all 0.35s var(--ease); }
.lab-item::before { left: 6px; top: 6px; border-left: 2px solid rgba(201, 242, 77, 0.5); border-top: 2px solid rgba(201, 242, 77, 0.5); }
.lab-item::after { right: 6px; bottom: 6px; border-right: 2px solid rgba(201, 242, 77, 0.5); border-bottom: 2px solid rgba(201, 242, 77, 0.5); }
.lab-item:hover { background: rgba(201, 242, 77, 0.1); border-color: rgba(201, 242, 77, 0.5); transform: translateY(-4px); }
.lab-item:hover::before, .lab-item:hover::after { width: 22px; height: 22px; border-color: var(--volt); }
.lab-item .tag {
  font-family: var(--font-tech); font-size: 10px; font-weight: 700; letter-spacing: 0.22em;
  color: var(--volt); text-transform: uppercase; opacity: 0.9;
}
.lab-item h4 { margin-top: 8px; font-size: 15px; font-weight: 700; color: #eef2f6; letter-spacing: 0.05em; }
.lab-item p { margin-top: 5px; font-size: 12px; color: rgba(210, 220, 232, 0.6); line-height: 1.7; }

/* ============================== 院训带 ============================== */
.motto-band {
  margin-top: 54px; position: relative; overflow: hidden;
  background:
    radial-gradient(ellipse 60% 130% at 10% -30%, rgba(201, 242, 77, 0.14), transparent 55%),
    radial-gradient(ellipse 50% 120% at 92% 130%, rgba(255, 138, 42, 0.12), transparent 55%),
    var(--graphite-soft);
  color: #fff; text-align: center; padding: 52px 0; border-radius: 2px;
}
.motto-band .kicker {
  font-family: var(--font-tech); font-size: 12px; font-weight: 600; letter-spacing: 0.42em;
  text-transform: uppercase; color: var(--volt); margin-bottom: 14px;
}
.motto-band .verse { font-weight: 900; font-size: 29px; letter-spacing: 0.2em; }
.motto-band .verse .volt { color: var(--volt); }
.motto-band .sub { margin-top: 14px; font-size: 14px; letter-spacing: 0.14em; color: rgba(228, 236, 244, 0.72); }

/* ============================== 快捷入口 ============================== */
.quick-strip { padding: 46px 0 52px; }
.quick-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.quick-item {
  display: flex; align-items: center; gap: 16px;
  background: var(--card); border: 1px solid var(--line); clip-path: var(--clip-sm);
  padding: 20px 22px; box-shadow: var(--shadow-card);
  transition: all 0.35s var(--ease);
}
.quick-item:hover { transform: translateY(-5px); box-shadow: var(--shadow-hover); border-color: var(--volt-deep); }
.quick-item .glyph {
  flex: none; width: 50px; height: 50px; clip-path: var(--clip-sm);
  display: grid; place-items: center;
  background: var(--graphite); color: var(--volt);
  box-shadow: inset 0 0 14px rgba(201, 242, 77, 0.16);
}
.quick-item:nth-child(2) .glyph { color: var(--orange); box-shadow: inset 0 0 14px rgba(255, 138, 42, 0.18); }
.quick-item svg { width: 24px; height: 24px; }
.quick-item .t { font-size: 16px; font-weight: 700; color: var(--graphite); }
.quick-item .d { font-size: 12px; color: var(--ink-soft); margin-top: 1px; }

/* ============================== 内页横幅 ============================== */
.page-banner {
  background: var(--graphite);
  background-image:
    linear-gradient(rgba(201, 242, 77, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(201, 242, 77, 0.05) 1px, transparent 1px);
  background-size: 30px 30px;
  color: #fff; padding: 42px 0 38px; position: relative;
  border-bottom: 3px solid var(--volt);
}
.page-banner .crumb {
  font-family: var(--font-tech); font-size: 12px; letter-spacing: 0.14em;
  color: rgba(220, 228, 238, 0.6); margin-bottom: 12px;
  display: flex; align-items: center; gap: 8px; flex-wrap: wrap; text-transform: uppercase;
}
.page-banner .crumb a:hover { color: var(--volt); }
.page-banner .crumb .sep { color: var(--volt); }
.page-banner .crumb b { color: var(--volt); font-weight: 600; }
.page-banner h2 { font-weight: 900; font-size: 30px; letter-spacing: 0.18em; display: flex; align-items: baseline; gap: 15px; }
.page-banner h2 .en {
  font-family: var(--font-tech); font-size: 12px; font-weight: 600;
  letter-spacing: 0.3em; text-transform: uppercase; color: var(--volt);
}

/* ============================== 列表页 ============================== */
.page-layout { display: grid; grid-template-columns: 250px 1fr; gap: 30px; padding: 40px 0 60px; align-items: start; }

.side-nav { background: var(--card); border: 1px solid var(--line); clip-path: var(--clip); overflow: hidden; box-shadow: var(--shadow-card); position: sticky; top: 24px; }
.side-nav h3 {
  background: var(--graphite); color: var(--volt);
  font-size: 18px; font-weight: 900; letter-spacing: 0.24em;
  text-align: center; padding: 17px 0 15px;
  text-shadow: 0 0 12px rgba(201, 242, 77, 0.45);
}
.side-nav a {
  display: flex; align-items: center; gap: 10px;
  padding: 13.5px 26px; font-size: 14.5px; color: var(--ink-soft);
  border-bottom: 1px dashed var(--line); letter-spacing: 0.05em;
}
.side-nav a:last-child { border-bottom: 0; }
.side-nav a::before {
  content: ""; width: 7px; height: 7px; background: #c3cad3;
  clip-path: polygon(50% 0, 100% 50%, 50% 100%, 0 50%); flex: none; transition: background 0.25s;
}
.side-nav a:hover { background: rgba(201, 242, 77, 0.12); color: var(--graphite); padding-left: 31px; }
.side-nav a.on { background: rgba(201, 242, 77, 0.16); color: var(--graphite); font-weight: 700; }
.side-nav a.on::before { background: var(--volt-deep); }

.side-contact {
  margin-top: 24px; background: var(--graphite); clip-path: var(--clip);
  color: rgba(228, 236, 244, 0.85); padding: 26px 26px 24px;
  box-shadow: var(--shadow-card); position: relative;
  background-image:
    linear-gradient(rgba(201, 242, 77, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(201, 242, 77, 0.05) 1px, transparent 1px);
  background-size: 30px 30px;
}
.side-contact h4 { font-size: 17px; font-weight: 900; letter-spacing: 0.18em; color: var(--volt); margin-bottom: 12px; }
.side-contact p { font-size: 12.5px; line-height: 2; }
.side-contact .tel {
  font-family: var(--font-tech); font-size: 19px; font-weight: 700; color: #fff;
  letter-spacing: 0.04em; margin-top: 8px;
}

.list-main { background: var(--card); border: 1px solid var(--line); clip-path: var(--clip); padding: 10px 30px 30px; box-shadow: var(--shadow-card); }
.list-row {
  display: flex; gap: 24px; padding: 22px 8px; border-bottom: 1px dashed var(--line);
  transition: background 0.25s;
}
.list-row:hover { background: rgba(201, 242, 77, 0.1); }
.list-row .thumb { flex: none; width: 176px; height: 112px; clip-path: var(--clip-sm); overflow: hidden; }
.list-row .thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.7s var(--ease); }
.list-row:hover .thumb img { transform: scale(1.07); }
.list-row .body { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.list-row h3 {
  font-size: 17px; font-weight: 700; line-height: 1.55;
  display: -webkit-box; -webkit-line-clamp: 1; -webkit-box-orient: vertical; overflow: hidden;
}
.list-row:hover h3 { color: var(--graphite); }
.list-row .summary {
  font-size: 13.5px; color: var(--ink-soft); margin-top: 8px; line-height: 1.8;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.list-row .meta {
  margin-top: auto; display: flex; align-items: center; gap: 16px;
  font-size: 12px; color: var(--ink-faint); letter-spacing: 0.04em; padding-top: 10px;
}
.list-row .meta .cat {
  font-family: var(--font-tech); font-size: 11px; font-weight: 700; letter-spacing: 0.12em;
  color: var(--graphite); background: var(--volt); padding: 1px 10px;
  clip-path: polygon(0 0, 100% 0, calc(100% - 6px) 100%, 0 100%); text-transform: uppercase;
}
.list-row .meta .cat.orange { background: var(--orange); color: #fff; }
.list-row .datecol { flex: none; width: 64px; text-align: center; padding-top: 4px; }
.list-row .datecol .d { font-family: var(--font-tech); font-weight: 700; font-size: 30px; color: var(--graphite); line-height: 1.1; }
.list-row .datecol .y { font-family: var(--font-tech); font-size: 12px; font-weight: 600; color: var(--ink-faint); letter-spacing: 0.04em; }

.pagination { display: flex; align-items: center; justify-content: center; gap: 10px; padding: 30px 0 14px; font-size: 13.5px; }
.pagination a, .pagination .cur {
  min-width: 38px; height: 38px; padding: 0 10px; display: grid; place-items: center;
  border: 1.5px solid var(--line); background: var(--card);
  color: var(--ink-soft); transition: all 0.25s var(--ease);
  font-family: var(--font-tech); font-weight: 600; clip-path: var(--clip-sm);
}
.pagination a:hover { border-color: var(--graphite); color: var(--graphite); transform: translateY(-2px); }
.pagination .cur { background: var(--graphite); border-color: var(--graphite); color: var(--volt); box-shadow: 0 6px 14px rgba(20, 24, 31, 0.35); }
.pagination .info { font-size: 12.5px; color: var(--ink-faint); margin-left: 14px; letter-spacing: 0.04em; }

/* ============================== 详情页 ============================== */
.article-layout { display: grid; grid-template-columns: 1fr 320px; gap: 30px; padding: 40px 0 64px; align-items: start; }
.article-main { background: var(--card); border: 1px solid var(--line); clip-path: var(--clip); padding: 44px 52px; box-shadow: var(--shadow-card); }
.article-main .cat-line {
  display: inline-block; font-family: var(--font-tech); font-size: 11.5px; font-weight: 700;
  letter-spacing: 0.22em; text-transform: uppercase; color: var(--graphite);
  background: var(--volt); padding: 4px 14px 3px; margin-bottom: 16px;
  clip-path: polygon(0 0, 100% 0, calc(100% - 8px) 100%, 0 100%);
}
.article-main h2.article-title { font-size: 27px; font-weight: 900; line-height: 1.6; letter-spacing: 0.02em; color: var(--graphite); }
.article-meta {
  display: flex; flex-wrap: wrap; align-items: center; gap: 22px;
  margin: 20px 0 26px; padding: 14px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  font-size: 12.5px; color: var(--ink-faint); letter-spacing: 0.04em;
}
.article-meta b { font-weight: 500; color: var(--ink-soft); }
.article-meta .views { margin-left: auto; }
.article-prose { font-size: 15.5px; line-height: 2.05; letter-spacing: 0.02em; }
.article-prose p { margin-bottom: 1.3em; text-align: justify; text-indent: 2em; }
.article-prose figure { margin: 2em 0; text-align: center; }
.article-prose figure img { width: 88%; margin-inline: auto; clip-path: var(--clip-sm); box-shadow: var(--shadow-card); }
.article-prose figcaption { margin-top: 10px; font-size: 12.5px; color: var(--ink-faint); letter-spacing: 0.08em; }
.article-prose .quote {
  text-indent: 0; margin: 1.8em 0; padding: 18px 24px; position: relative;
  background: rgba(201, 242, 77, 0.12); font-size: 15px; color: var(--graphite); line-height: 1.95;
}
.article-prose .quote::before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 4px; background: var(--volt-deep); }
.sign-off { margin-top: 30px; text-align: right; font-size: 13px; color: var(--ink-faint); line-height: 2.1; }

.pn-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 34px; padding-top: 24px; border-top: 1px solid var(--line); }
.pn-nav a {
  display: block; padding: 14px 20px; background: var(--concrete);
  border: 1px solid var(--line); clip-path: var(--clip-sm);
  font-size: 13.5px; color: var(--ink-soft); transition: all 0.3s var(--ease);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.pn-nav a b {
  display: block; font-family: var(--font-tech); font-size: 10.5px; font-weight: 700;
  letter-spacing: 0.22em; text-transform: uppercase; color: var(--graphite); margin-bottom: 4px;
}
.pn-nav a:hover { background: var(--graphite); color: var(--volt); border-color: var(--graphite); transform: translateY(-2px); }
.pn-nav a:hover b { color: var(--volt); }
.pn-nav .next { text-align: right; }

.aside-block { background: var(--card); border: 1px solid var(--line); clip-path: var(--clip); box-shadow: var(--shadow-card); margin-bottom: 26px; overflow: hidden; }
.aside-block h4 {
  display: flex; align-items: center; gap: 10px;
  font-size: 16px; font-weight: 900; letter-spacing: 0.14em; color: var(--graphite);
  padding: 16px 22px 14px; border-bottom: 1px solid var(--line);
}
.aside-block h4::before { content: ""; width: 8px; height: 8px; background: var(--volt-deep); clip-path: polygon(50% 0, 100% 50%, 50% 100%, 0 50%); }
.aside-block ul { padding: 8px 22px 14px; }
.aside-block li { border-bottom: 1px dashed var(--line); }
.aside-block li:last-child { border-bottom: 0; }
.aside-block li a {
  display: block; padding: 11px 0 11px 16px; font-size: 13.5px; color: var(--ink-soft);
  position: relative; white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.aside-block li a::before {
  content: ""; position: absolute; left: 0; top: 50%; transform: translateY(-50%);
  width: 6px; height: 6px; background: #c3cad3;
}
.aside-block li a:hover { color: var(--graphite); }
.aside-block > a {
  display: block; padding: 11px 22px 11px 38px; font-size: 13.5px; color: var(--ink-soft);
  position: relative; border-bottom: 1px dashed var(--line);
}
.aside-block > a:last-child { border-bottom: 0; }
.aside-block > a::before {
  content: ""; position: absolute; left: 22px; top: 50%; transform: translateY(-50%);
  width: 6px; height: 6px; background: #c3cad3;
}
.aside-block > a::after {
  content: "\2192"; position: absolute; right: 22px; top: 50%; transform: translateY(-50%);
  font-family: var(--font-tech); font-size: 12px; color: var(--ink-faint);
}
.aside-block > a:hover { color: var(--graphite); }
.aside-block > a:hover::before { background: var(--volt-deep); }
.aside-block > a:hover::after { color: var(--volt-deep); }
.hot-card { padding: 20px 22px; display: block; }
.hot-card img { width: 100%; height: 148px; object-fit: cover; clip-path: var(--clip-sm); }
.hot-card h5 { margin-top: 12px; font-size: 14.5px; font-weight: 600; line-height: 1.6; color: var(--ink); }
.hot-card:hover h5 { color: var(--graphite); }
.hot-card .time { font-family: var(--font-tech); font-size: 11.5px; font-weight: 600; color: var(--ink-faint); margin-top: 6px; display: block; letter-spacing: 0.04em; }

/* ============================== 搜索页 ============================== */
.search-hero {
  background: var(--graphite);
  background-image:
    linear-gradient(rgba(201, 242, 77, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(201, 242, 77, 0.05) 1px, transparent 1px);
  background-size: 30px 30px;
  padding: 52px 0 88px; position: relative; border-bottom: 3px solid var(--volt);
}
.search-hero .container { position: relative; }
.search-hero h2 {
  font-family: var(--font-tech); font-weight: 700; font-size: 26px;
  letter-spacing: 0.34em; color: var(--volt); text-align: center; margin-bottom: 26px;
  text-transform: uppercase;
}
.search-hero h2::before { content: "[ "; opacity: 0.7; }
.search-hero h2::after { content: " ]"; opacity: 0.7; }
.search-hero .big-search {
  width: min(680px, 100%); margin-inline: auto; display: flex;
  clip-path: var(--clip); overflow: hidden; border: 1.5px solid rgba(201, 242, 77, 0.6);
  box-shadow: 0 22px 50px rgba(0, 0, 0, 0.5);
}
.search-hero input {
  flex: 1; min-width: 0; border: 0; outline: 0; background: var(--card);
  padding: 16px 30px; font-size: 15px;
}
.search-hero button {
  flex: none; border: 0; cursor: pointer; padding: 0 42px;
  background: var(--volt); color: var(--graphite);
  font-weight: 900; font-size: 16px; letter-spacing: 0.3em;
  transition: filter 0.25s;
}
.search-hero button:hover { filter: brightness(1.06); }
.search-hot { margin-top: 20px; text-align: center; font-size: 12.5px; letter-spacing: 0.06em; color: rgba(220, 228, 238, 0.65); }
.search-hot a {
  display: inline-block; margin: 0 7px; padding: 3px 14px;
  border: 1px solid rgba(220, 228, 238, 0.3); transition: all 0.25s;
}
.search-hot a:hover { border-color: var(--volt); color: var(--volt); background: rgba(201, 242, 77, 0.08); }

.search-body { padding-bottom: 66px; }
.search-card {
  background: var(--card); border: 1px solid var(--line); clip-path: var(--clip);
  box-shadow: var(--shadow-card); margin-top: -46px; position: relative; z-index: 2;
  padding: 26px 32px 34px;
}
.result-bar {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between;
  gap: 14px; padding-bottom: 18px; border-bottom: 2px solid var(--graphite);
}
.result-bar .count { font-size: 14px; color: var(--ink-soft); }
.result-bar .count b { font-family: var(--font-tech); color: var(--graphite); font-size: 20px; margin: 0 3px; }
.result-bar .count em { font-style: normal; color: var(--orange); font-weight: 700; }
.sort-tabs { display: flex; gap: 4px; }
.sort-tabs a {
  padding: 7px 18px; font-size: 13px; letter-spacing: 0.06em; color: var(--ink-soft);
  border: 1px solid transparent; transition: all 0.25s; clip-path: var(--clip-sm);
}
.sort-tabs a:hover { color: var(--graphite); border-color: var(--line); }
.sort-tabs a.on { background: var(--graphite); color: var(--volt); }

.result-item { padding: 24px 6px; border-bottom: 1px dashed var(--line); }
.result-item:last-of-type { border-bottom: 0; }
.result-item .cat {
  display: inline-block; font-family: var(--font-tech); font-size: 10.5px; font-weight: 700;
  letter-spacing: 0.16em; color: var(--graphite); background: var(--volt);
  padding: 2px 12px 2px; margin-bottom: 10px; text-transform: uppercase;
  clip-path: polygon(0 0, 100% 0, calc(100% - 7px) 100%, 0 100%);
}
.result-item h3 { font-size: 17.5px; font-weight: 700; line-height: 1.6; }
.result-item h3 a:hover { color: var(--graphite); }
.result-item mark { background: none; color: var(--orange); font-weight: 700; border-bottom: 2px solid rgba(255, 138, 42, 0.45); }
.result-item .summary {
  font-size: 13.5px; color: var(--ink-soft); margin-top: 10px; line-height: 1.95;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.result-item .r-meta { margin-top: 12px; font-size: 12px; color: var(--ink-faint); letter-spacing: 0.03em; display: flex; gap: 18px; flex-wrap: wrap; font-family: var(--font-tech); font-weight: 600; }
.result-item .r-meta span::before { content: "//"; margin-right: 8px; color: var(--volt-deep); }
.result-item .r-meta span:first-child::before { content: none; }

.empty-tip { text-align: center; padding: 46px 0; color: var(--ink-faint); }
.empty-tip .glyph-big {
  width: 72px; height: 72px; margin: 0 auto 18px; border: 2px dashed var(--ink-faint);
  display: grid; place-items: center; font-family: var(--font-tech); font-size: 26px; color: var(--ink-soft);
  clip-path: var(--clip-sm);
}

/* ============================== 页脚 ============================== */
.site-footer { margin-top: auto; }
.footer-main {
  background: var(--graphite);
  background-image:
    linear-gradient(rgba(201, 242, 77, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(201, 242, 77, 0.035) 1px, transparent 1px);
  background-size: 30px 30px;
  color: rgba(218, 227, 238, 0.72); padding: 46px 0 30px; position: relative;
}
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.15fr; gap: 40px; }
.footer-brand .fb-name { font-weight: 900; font-size: 20px; letter-spacing: 0.12em; color: #fff; }
.footer-brand .fb-en { font-family: var(--font-tech); font-size: 10px; font-weight: 600; letter-spacing: 0.24em; text-transform: uppercase; color: var(--volt); margin: 5px 0 18px; }
.footer-brand .slogan {
  font-size: 14px; letter-spacing: 0.16em; color: rgba(235, 241, 248, 0.9);
  border-left: 3px solid var(--volt); padding-left: 14px; line-height: 2;
}
.footer-col h5 {
  font-family: var(--font-tech); font-size: 13px; font-weight: 700; letter-spacing: 0.28em;
  color: var(--volt); text-transform: uppercase; margin-bottom: 16px;
}
.footer-col a { display: block; padding: 4.5px 0; font-size: 13px; opacity: 0.85; }
.footer-col a:hover { color: var(--volt); opacity: 1; }
.footer-contact { font-size: 13px; line-height: 2.15; opacity: 0.92; }
.footer-contact .tel { font-family: var(--font-tech); font-size: 19px; font-weight: 700; color: var(--volt); letter-spacing: 0.04em; }
.footer-bottom {
  border-top: 1px solid rgba(218, 227, 238, 0.14); margin-top: 32px; padding-top: 18px;
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between;
  gap: 10px; font-size: 12px; letter-spacing: 0.03em; opacity: 0.6;
}

/* ============================== 返回顶部 ============================== */
.back-top {
  position: fixed; right: 26px; bottom: 30px; z-index: 90;
  width: 46px; height: 46px; clip-path: var(--clip-sm); cursor: pointer; border: 0;
  background: var(--graphite); color: var(--volt);
  display: grid; place-items: center; font-size: 16px; box-shadow: 0 10px 24px rgba(0, 0, 0, 0.35);
  opacity: 0; visibility: hidden; transform: translateY(12px);
  transition: all 0.35s var(--ease);
}
.back-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
.back-top:hover { background: var(--volt); color: var(--graphite); }

/* ============================== 滚动浮现 ============================== */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity 0.8s var(--ease), transform 0.8s var(--ease); }
.reveal.in { opacity: 1; transform: translateY(0); }
.reveal[data-delay="1"] { transition-delay: 0.1s; }
.reveal[data-delay="2"] { transition-delay: 0.2s; }
.reveal[data-delay="3"] { transition-delay: 0.3s; }
.reveal[data-delay="4"] { transition-delay: 0.4s; }
.reveal[data-delay="5"] { transition-delay: 0.5s; }

/* ============================== 响应式 ============================== */
@media (max-width: 1080px) {
  .majors-grid { grid-template-columns: repeat(2, 1fr); }
  .news-tri { grid-template-columns: 1fr 1fr; }
  .news-tri .news-main { grid-column: 1 / -1; grid-row: auto; }
  .news-tri .col-card.c-full { grid-column: 1 / -1; }
  .lab-grid { grid-template-columns: repeat(2, 1fr); }
  .quick-grid { grid-template-columns: repeat(2, 1fr); }
  .article-layout { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
  .carousel-track { height: 400px; }
}

@media (max-width: 860px) {
  .page-layout { grid-template-columns: 1fr; }
  .side-nav { position: static; }
  .header-search { display: none; }
  .brand-text .school { display: none; }
  .brand-text h1 { font-size: 22px; }
  .topbar-inner { justify-content: center; }
  .topbar-links { display: none; }
  .carousel-track { height: 320px; }
  .carousel-caption h2 { font-size: 26px; }
  .carousel-caption p { font-size: 12.5px; }
  .carousel-arrow { display: none; }
  .carousel-dots { right: auto; left: 50%; transform: translateX(-50%); }
  .motto-band .verse { font-size: 20px; letter-spacing: 0.12em; }

  .nav-toggle {
    display: grid; place-items: center; position: absolute; top: -50px; right: 16px;
    width: 42px; height: 38px; cursor: pointer; color: var(--volt);
    background: var(--graphite-soft); clip-path: var(--clip-sm);
  }
  .nav-toggle span, .nav-toggle span::before, .nav-toggle span::after {
    display: block; width: 20px; height: 2px; background: currentColor;
    position: relative; transition: transform 0.3s;
  }
  .nav-toggle span::before, .nav-toggle span::after { content: ""; position: absolute; left: 0; }
  .nav-toggle span::before { top: -6px; }
  .nav-toggle span::after { top: 6px; }
  .main-nav.open .nav-toggle span { background: transparent; }
  .main-nav.open .nav-toggle span::before { transform: translateY(6px) rotate(45deg); }
  .main-nav.open .nav-toggle span::after { transform: translateY(-6px) rotate(-45deg); }

  .nav-list { display: none; flex-direction: column; padding: 8px 0 14px; }
  .main-nav.open .nav-list { display: flex; }
  .nav-item + .nav-item::before { display: none; }
  .nav-item > a { text-align: left; padding: 12px 20px; }
  .dropdown {
    position: static; opacity: 1; visibility: visible; transform: none;
    background: rgba(255, 255, 255, 0.05); border-top: 0; box-shadow: none;
    padding: 0; min-width: 100%; clip-path: none;
  }
  .dropdown a { color: rgba(225, 232, 241, 0.8); padding-left: 38px; }
  .dropdown a:hover { background: rgba(201, 242, 77, 0.08); color: var(--volt); }

  .article-main { padding: 30px 24px; }
  .list-row .thumb { width: 120px; height: 84px; }
  .footer-grid { grid-template-columns: 1fr; gap: 26px; }
}

@media (max-width: 560px) {
  .majors-grid { grid-template-columns: 1fr; }
  .news-tri { grid-template-columns: 1fr; }
  .news-tri .col-card.c-full { grid-column: auto; }
  .lab-grid { grid-template-columns: 1fr; }
  .quick-grid { grid-template-columns: 1fr; }
  .list-row .summary { display: none; }
  .pn-nav { grid-template-columns: 1fr; }
  .page-banner h2 { font-size: 24px; }
  .sec-title .zh { font-size: 21px; }
}