/* =========================================================
   双轨协同·三链驱动 —— 国家级教学成果申报网站
   河南中医药大学  视觉设计系统
   主题：绛红 / 鎏金 / 宣纸  ·  高端典雅 中医传承
   ========================================================= */

:root {
  /* 主色：绛红（中国传统朱砂红，沉稳大气） */
  --c-red: #8c1c1c;
  --c-red-deep: #6e1414;
  --c-red-soft: #a8362f;
  /* 鎏金 */
  --c-gold: #c0a062;
  --c-gold-light: #d9c08a;
  --c-gold-deep: #a9863f;
  /* 墨色 */
  --c-ink: #1d1714;
  --c-ink-soft: #3a322c;
  --c-text: #2c2420;
  --c-text-muted: #6f655c;
  /* 宣纸底色 */
  --c-paper: #f7f2e9;
  --c-paper-2: #efe7d7;
  --c-cream: #fbf8f1;
  --c-white: #ffffff;
  --c-line: #e3d8c4;

  --shadow-sm: 0 4px 14px rgba(60, 35, 20, 0.08);
  --shadow-md: 0 12px 36px rgba(60, 35, 20, 0.12);
  --shadow-lg: 0 24px 70px rgba(40, 20, 12, 0.20);

  --maxw: 1240px;
  --radius: 14px;
  --radius-lg: 22px;

  --font-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", serif;
  --font-sans: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ---------- Reset ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-sans);
  color: var(--c-text);
  background: var(--c-paper);
  line-height: 1.8;
  font-size: 16px;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul, ol { list-style: none; }
h1, h2, h3, h4 { font-family: var(--font-serif); font-weight: 700; line-height: 1.3; color: var(--c-ink); }

/* ---------- 通用容器 ---------- */
.container { width: 92%; max-width: var(--maxw); margin: 0 auto; }
.section { padding: 96px 0; position: relative; }
.section--alt { background: linear-gradient(180deg, var(--c-cream), var(--c-paper-2)); }
.section--dark {
  background:
    radial-gradient(1200px 500px at 80% -10%, rgba(192,160,98,0.12), transparent 60%),
    linear-gradient(160deg, #2a1413, #1a0d0c 60%, #160a09);
  color: #efe2cf;
}
.section--dark h2, .section--dark h3, .section--dark h4 { color: #f6ead2; }

/* ---------- 节标题 ---------- */
.sec-head { text-align: center; max-width: 820px; margin: 0 auto 60px; }
.sec-head__eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-sans); font-size: 13px; letter-spacing: 4px;
  text-transform: uppercase; color: var(--c-gold-deep); font-weight: 600;
  margin-bottom: 16px;
}
.sec-head__eyebrow::before, .sec-head__eyebrow::after {
  content: ""; width: 34px; height: 1px;
  background: linear-gradient(90deg, transparent, var(--c-gold));
}
.sec-head__eyebrow::after { background: linear-gradient(90deg, var(--c-gold), transparent); }
.sec-head h2 {
  font-size: clamp(28px, 4vw, 42px); letter-spacing: 2px; position: relative;
}
.sec-head--dark .sec-head h2 { color: #f6ead2; }
.sec-head p { margin-top: 18px; color: var(--c-text-muted); font-size: 16px; }
.section--dark .sec-head p { color: #cdbfa9; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 30px; border-radius: 50px; font-weight: 600; font-size: 15px;
  letter-spacing: 1px; cursor: pointer; border: none; transition: all .35s var(--ease);
  font-family: var(--font-sans);
}
.btn--gold {
  background: linear-gradient(135deg, var(--c-gold-light), var(--c-gold-deep));
  color: #3a2606; box-shadow: 0 10px 26px rgba(169,134,63,0.35);
}
.btn--gold:hover { transform: translateY(-3px); box-shadow: 0 16px 34px rgba(169,134,63,0.45); }
.btn--ghost { background: transparent; color: #f6ead2; border: 1px solid rgba(217,192,138,0.5); }
.btn--ghost:hover { background: rgba(217,192,138,0.12); border-color: var(--c-gold-light); }
.btn--red { background: linear-gradient(135deg, var(--c-red-soft), var(--c-red-deep)); color: #fff; box-shadow: 0 10px 26px rgba(140,28,28,0.3); }
.btn--red:hover { transform: translateY(-3px); box-shadow: 0 16px 34px rgba(140,28,28,0.4); }

/* =========================================================
   顶部导航
   ========================================================= */
.header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  transition: all .4s var(--ease);
  background: rgba(247, 242, 233, 0.0);
}
.header.scrolled {
  background: rgba(250, 247, 240, 0.92);
  backdrop-filter: blur(14px);
  box-shadow: 0 6px 24px rgba(60,35,20,0.10);
  border-bottom: 1px solid rgba(192,160,98,0.25);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 84px; }
.header.scrolled .nav { height: 72px; }

.brand { display: flex; align-items: center; gap: 14px; }
.brand__seal {
  width: 46px; height: 46px; flex: none; border-radius: 10px;
  background: linear-gradient(135deg, var(--c-red), var(--c-red-deep));
  display: grid; place-items: center; color: var(--c-gold-light);
  font-family: var(--font-serif); font-weight: 700; font-size: 22px;
  box-shadow: inset 0 0 0 1.5px rgba(217,192,138,0.55);
  letter-spacing: -2px;
}
.brand__logo { height: 44px; width: auto; display: block; transition: height .4s var(--ease); }
.header.scrolled .brand__logo { height: 40px; }
/* 默认（首页 Hero 深色背景上、未滚动）显示纯白 logo；滚动/浅色背景显示彩色 logo */
.brand__logo--color { display: none; }
.header.scrolled .brand__logo--white { display: none; }
.header.scrolled .brand__logo--color { display: block; }
.brand__txt { line-height: 1.25; }
.brand__name { font-family: var(--font-serif); font-weight: 700; font-size: 18px; color: var(--c-ink); letter-spacing: 1px; }
.brand__sub { font-size: 11px; color: var(--c-text-muted); letter-spacing: 2px; }
.header:not(.scrolled) .nav--light .brand__name { color: #fbf6ec; }
.header:not(.scrolled) .nav--light .brand__sub { color: #e4d5bb; }

.menu { display: flex; align-items: center; gap: 4px; }
.menu a {
  position: relative; padding: 10px 16px; font-size: 15px; font-weight: 500;
  color: var(--c-ink-soft); border-radius: 8px; transition: color .3s, background .3s;
  white-space: nowrap;
}
.header:not(.scrolled) .nav--light .menu a { color: #f3e8d6; }
.menu a::after {
  content: ""; position: absolute; left: 16px; right: 16px; bottom: 6px; height: 2px;
  background: var(--c-gold); transform: scaleX(0); transform-origin: left;
  transition: transform .35s var(--ease);
}
.menu a:hover, .menu a.active { color: var(--c-red); }
.header:not(.scrolled) .nav--light .menu a:hover,
.header:not(.scrolled) .nav--light .menu a.active { color: var(--c-gold-light); }
.menu a:hover::after, .menu a.active::after { transform: scaleX(1); }

.nav-toggle {
  display: none; width: 44px; height: 44px; border: none; background: transparent;
  cursor: pointer; flex-direction: column; gap: 6px; justify-content: center; align-items: center;
}
.nav-toggle span {
  width: 26px; height: 2px; background: var(--c-ink); border-radius: 2px; transition: all .35s var(--ease);
}
.header:not(.scrolled) .nav--light .nav-toggle span { background: #f3e8d6; }
.nav-toggle.open span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

/* =========================================================
   HERO
   ========================================================= */
.hero {
  position: relative; min-height: 100vh; display: flex; align-items: center;
  color: #f6ecda; overflow: hidden; padding: 120px 0 80px;
}
.hero__bg {
  position: absolute; inset: 0; z-index: -2;
  background:
    radial-gradient(1100px 700px at 75% 20%, rgba(176,40,32,0.45), transparent 55%),
    radial-gradient(900px 600px at 10% 90%, rgba(192,160,98,0.18), transparent 55%),
    linear-gradient(150deg, #2c100e 0%, #1d0a09 45%, #140706 100%);
}
.hero__bg::after {
  /* 宣纸纹理 + 暗角 */
  content: ""; position: absolute; inset: 0;
  background-image:
    radial-gradient(circle at center, transparent 60%, rgba(0,0,0,0.45) 100%);
}
.hero__mountains { position: absolute; inset: 0; z-index: -1; opacity: .5; }

.hero__inner { position: relative; z-index: 2; max-width: 100%; }
.hero__badge {
  display: inline-flex; align-items: center; gap: 10px; padding: 8px 20px;
  border: 1px solid rgba(217,192,138,0.45); border-radius: 50px;
  font-size: 13px; letter-spacing: 3px; color: var(--c-gold-light);
  background: rgba(217,192,138,0.08); margin-bottom: 30px; backdrop-filter: blur(6px);
}
.hero__badge .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--c-gold); box-shadow: 0 0 10px var(--c-gold); }
.hero h1 {
  font-size: clamp(34px, 6.4vw, 76px); line-height: 1.18; color: #fdf6e8;
  letter-spacing: 2px; text-shadow: 0 4px 30px rgba(0,0,0,0.4);
}
.hero h1 .accent {
  background: linear-gradient(120deg, #e8cf95, #c0a062 55%, #f0dcab);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero h1 .hero__line { white-space: nowrap; }
.hero__sub {
  margin-top: 26px; font-size: clamp(16px, 2vw, 22px); color: #e8dcc6; font-weight: 300;
  max-width: 760px; letter-spacing: 1px;
}
.hero__org { margin-top: 14px; font-size: 15px; letter-spacing: 4px; color: var(--c-gold-light); }
.hero__cta { margin-top: 44px; display: flex; gap: 18px; flex-wrap: wrap; justify-content: flex-end; }

.hero__stats {
  margin-top: 70px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px;
  width: 100%; border-top: 1px solid rgba(217,192,138,0.25); padding-top: 36px;
  text-align: center;
}
.hero__stat .num { font-family: var(--font-serif); font-size: clamp(28px, 4vw, 44px); color: var(--c-gold-light); font-weight: 700; }
.hero__stat .num small { font-size: 16px; margin-left: 2px; }
.hero__stat .lbl { font-size: 13px; color: #d6c8af; letter-spacing: 1px; margin-top: 4px; }

.scroll-hint {
  position: absolute; bottom: 26px; left: 50%; transform: translateX(-50%);
  color: rgba(246,236,218,0.7); font-size: 12px; letter-spacing: 2px; z-index: 3;
  display: flex; flex-direction: column; align-items: center; gap: 8px;
}
.scroll-hint .mouse {
  width: 24px; height: 38px; border: 2px solid rgba(217,192,138,0.6); border-radius: 14px; position: relative;
}
.scroll-hint .mouse::after {
  content: ""; position: absolute; top: 7px; left: 50%; transform: translateX(-50%);
  width: 4px; height: 8px; border-radius: 3px; background: var(--c-gold-light);
  animation: scrollDot 1.6s infinite;
}
@keyframes scrollDot { 0%{opacity:0;transform:translate(-50%,0)} 40%{opacity:1} 80%{opacity:0;transform:translate(-50%,12px)} }

/* =========================================================
   课题主持人
   ========================================================= */
.leader { display: grid; grid-template-columns: 0.85fr 1.15fr; gap: 60px; align-items: center; }
.leader__photo {
  position: relative; border-radius: var(--radius-lg); overflow: hidden;
  aspect-ratio: 4/5; box-shadow: var(--shadow-lg);
  background: linear-gradient(160deg, #7a1818, #4d0f0f);
  display: grid; place-items: center;
}
.leader__photo::before {
  content: ""; position: absolute; inset: 12px; border: 1px solid rgba(217,192,138,0.4); border-radius: 16px; z-index: 2;
}
.leader__avatar {
  width: 64%; aspect-ratio: 1; border-radius: 50%;
  background: radial-gradient(circle at 50% 35%, #f4e6cf, #d9c08a 70%, #b8924f);
  display: grid; place-items: center; font-family: var(--font-serif);
  font-size: 84px; color: #6e1414; box-shadow: 0 20px 50px rgba(0,0,0,0.3);
}
img.leader__avatar {
  width: 72%; object-fit: cover; object-position: center 22%;
  background: none; border: 4px solid rgba(217,192,138,0.55);
}
.leader__tag {
  position: absolute; bottom: 22px; left: 50%; transform: translateX(-50%); z-index: 3;
  background: rgba(20,7,6,0.7); backdrop-filter: blur(6px); color: var(--c-gold-light);
  padding: 8px 22px; border-radius: 40px; font-size: 14px; letter-spacing: 3px;
  border: 1px solid rgba(217,192,138,0.4); white-space: nowrap;
}
.leader__name { font-size: clamp(30px, 4vw, 44px); letter-spacing: 4px; }
.leader__role { color: var(--c-red); font-weight: 600; letter-spacing: 2px; margin: 10px 0 22px; font-size: 16px; }
.leader__desc { color: var(--c-text-muted); font-size: 16px; }
.leader__desc + .leader__desc { margin-top: 14px; }
.leader__meta { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; margin-top: 30px; }
.leader__meta li {
  background: var(--c-white); border: 1px solid var(--c-line); border-radius: 12px;
  padding: 18px 20px; box-shadow: var(--shadow-sm);
}
.leader__meta .k { font-size: 13px; color: var(--c-gold-deep); letter-spacing: 1px; }
.leader__meta .v { font-family: var(--font-serif); font-weight: 700; color: var(--c-ink); font-size: 17px; margin-top: 4px; }

/* =========================================================
   成果概况 + 时间线
   ========================================================= */
.overview__lead {
  max-width: 940px; margin: 0 auto 56px; text-align: center; font-size: 18px;
  color: var(--c-text); line-height: 2.1;
}
.overview__lead strong { color: var(--c-red); }
.quote-card {
  max-width: 880px; margin: 0 auto 60px; padding: 36px 44px; position: relative;
  background: var(--c-white); border-radius: var(--radius); box-shadow: var(--shadow-md);
  border-left: 4px solid var(--c-gold);
}
.quote-card::before {
  content: "“"; position: absolute; top: -10px; left: 22px; font-family: var(--font-serif);
  font-size: 80px; color: rgba(192,160,98,0.25); line-height: 1;
}
.quote-card p { font-family: var(--font-serif); font-size: 18px; color: var(--c-ink-soft); font-style: italic; }
.quote-card .src { margin-top: 12px; font-size: 13px; color: var(--c-text-muted); letter-spacing: 1px; }

.timeline { position: relative; max-width: 1000px; margin: 0 auto; }
.timeline::before {
  content: ""; position: absolute; left: 50%; top: 0; bottom: 0; width: 2px;
  background: linear-gradient(180deg, transparent, var(--c-gold), transparent); transform: translateX(-50%);
}
.tl-item { position: relative; width: 50%; padding: 18px 44px; }
.tl-item:nth-child(odd) { left: 0; text-align: right; }
.tl-item:nth-child(even) { left: 50%; }
.tl-item::after {
  content: ""; position: absolute; top: 26px; width: 16px; height: 16px; border-radius: 50%;
  background: var(--c-cream); border: 3px solid var(--c-gold); box-shadow: 0 0 0 4px rgba(192,160,98,0.18);
}
.tl-item:nth-child(odd)::after { right: -8px; }
.tl-item:nth-child(even)::after { left: -8px; }
.tl-card { background: var(--c-white); border: 1px solid var(--c-line); border-radius: 12px; padding: 18px 22px; box-shadow: var(--shadow-sm); transition: transform .35s var(--ease), box-shadow .35s; }
.tl-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.tl-year { font-family: var(--font-serif); font-size: 24px; color: var(--c-red); font-weight: 700; }
.tl-text { font-size: 14.5px; color: var(--c-text-muted); margin-top: 4px; }

/* =========================================================
   成果展示 —— 三链驱动
   ========================================================= */
.pillars { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.pillar {
  position: relative; border-radius: var(--radius-lg); padding: 40px 32px 36px;
  background: rgba(255,255,255,0.04); border: 1px solid rgba(217,192,138,0.22);
  overflow: hidden; transition: transform .4s var(--ease), border-color .4s, background .4s;
}
.pillar:hover { transform: translateY(-8px); border-color: rgba(217,192,138,0.6); background: rgba(255,255,255,0.07); }
.pillar__no {
  font-family: var(--font-serif); font-size: 64px; font-weight: 700; line-height: 1;
  background: linear-gradient(120deg, #e8cf95, #b8924f); -webkit-background-clip: text; background-clip: text; color: transparent;
  opacity: .9;
}
.pillar__chain { font-size: 13px; letter-spacing: 4px; color: var(--c-gold-light); margin: 6px 0 16px; }
.pillar h3 { font-size: 22px; color: #f6ead2; letter-spacing: 1px; }
.pillar__sys { display: inline-block; margin: 14px 0 16px; padding: 5px 16px; border-radius: 40px; font-size: 13px; background: rgba(192,160,98,0.16); color: var(--c-gold-light); border: 1px solid rgba(192,160,98,0.3); }
.pillar ul { margin-top: 8px; }
.pillar li { position: relative; padding-left: 22px; color: #d8cab2; font-size: 14.5px; margin: 9px 0; }
.pillar li::before { content: ""; position: absolute; left: 0; top: 11px; width: 8px; height: 8px; border-radius: 50%; background: var(--c-gold); }
.pillar__flow { margin-top: 18px; font-size: 12px; letter-spacing: 1px; color: #b9a988; }

/* =========================================================
   问题导向（教学问题）
   ========================================================= */
.problems { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; margin-top: 8px; }
.problem {
  background: var(--c-white); border-radius: var(--radius); padding: 32px 28px;
  box-shadow: var(--shadow-sm); border-top: 3px solid var(--c-red); transition: transform .35s var(--ease);
}
.problem:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.problem__icon {
  width: 56px; height: 56px; border-radius: 14px; display: grid; place-items: center;
  background: linear-gradient(135deg, #fbeeea, #f3d9d2); color: var(--c-red); margin-bottom: 18px;
}
.problem__icon svg { width: 28px; height: 28px; }
.problem h4 { font-size: 19px; margin-bottom: 6px; }
.problem .tag { font-size: 13px; color: var(--c-gold-deep); letter-spacing: 2px; }
.problem p { color: var(--c-text-muted); font-size: 14.5px; margin-top: 10px; }

/* =========================================================
   成果创新点
   ========================================================= */
.innov { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.innov-card {
  position: relative; background: var(--c-white); border-radius: var(--radius-lg);
  padding: 38px 30px; box-shadow: var(--shadow-sm); overflow: hidden;
  border: 1px solid var(--c-line); transition: transform .4s var(--ease), box-shadow .4s;
}
.innov-card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 4px;
  background: linear-gradient(90deg, var(--c-gold-light), var(--c-gold-deep));
  transform: scaleX(0); transform-origin: left; transition: transform .45s var(--ease);
}
.innov-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
.innov-card:hover::before { transform: scaleX(1); }
.innov-card__no {
  width: 60px; height: 60px; border-radius: 50%; display: grid; place-items: center;
  font-family: var(--font-serif); font-size: 26px; font-weight: 700; color: var(--c-white);
  background: linear-gradient(135deg, var(--c-red-soft), var(--c-red-deep));
  box-shadow: 0 12px 26px rgba(140,28,28,0.3); margin-bottom: 22px;
}
.innov-card h3 { font-size: 21px; margin-bottom: 12px; letter-spacing: 1px; }
.innov-card p { color: var(--c-text-muted); font-size: 15px; }
.innov-card .seal {
  position: absolute; right: -10px; bottom: -10px; font-family: var(--font-serif);
  font-size: 120px; color: rgba(140,28,28,0.04); font-weight: 700; line-height: 1; user-select: none;
}

/* =========================================================
   数据成效（统计）
   ========================================================= */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 26px; }
.stat-card {
  text-align: center; padding: 38px 22px; border-radius: var(--radius);
  background: rgba(255,255,255,0.05); border: 1px solid rgba(217,192,138,0.2);
  transition: transform .35s var(--ease), background .35s;
}
.stat-card:hover { transform: translateY(-6px); background: rgba(255,255,255,0.09); }
.stat-card .num {
  font-family: var(--font-serif); font-weight: 700; font-size: clamp(36px, 4.6vw, 56px);
  background: linear-gradient(120deg, #e8cf95, #c0a062); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.stat-card .num small { font-size: 20px; }
.stat-card .lbl { color: #d6c8af; font-size: 15px; margin-top: 8px; letter-spacing: 1px; }

/* 学生发展亮点 */
.highlights { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; margin-top: 56px; }
.hl {
  display: flex; gap: 18px; align-items: flex-start; padding: 24px 26px; border-radius: var(--radius);
  background: rgba(255,255,255,0.04); border: 1px solid rgba(217,192,138,0.18);
}
.hl__icon { flex: none; width: 48px; height: 48px; border-radius: 12px; display: grid; place-items: center; background: rgba(192,160,98,0.15); color: var(--c-gold-light); }
.hl__icon svg { width: 24px; height: 24px; }
.hl h4 { color: #f6ead2; font-size: 17px; margin-bottom: 4px; }
.hl p { color: #cdbfa9; font-size: 14.5px; }

/* =========================================================
   论文
   ========================================================= */
.papers { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.paper {
  display: flex; gap: 20px; padding: 26px 28px; background: var(--c-white);
  border: 1px solid var(--c-line); border-radius: var(--radius); box-shadow: var(--shadow-sm);
  transition: transform .35s var(--ease), box-shadow .35s;
}
.paper:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.paper__badge {
  flex: none; width: 60px; height: 60px; border-radius: 12px; display: grid; place-items: center;
  font-family: var(--font-serif); font-weight: 700; font-size: 13px; text-align: center; line-height: 1.2;
  color: var(--c-white); background: linear-gradient(135deg, var(--c-gold), var(--c-gold-deep));
}
.paper__badge.cssci { background: linear-gradient(135deg, var(--c-red-soft), var(--c-red-deep)); }
.paper h4 { font-size: 17px; line-height: 1.5; color: var(--c-ink); }
.paper .meta { color: var(--c-text-muted); font-size: 13.5px; margin-top: 8px; }
.paper .meta span { color: var(--c-gold-deep); }

/* =========================================================
   媒体报道
   ========================================================= */
.media-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.media-card {
  background: var(--c-white); border-radius: var(--radius); overflow: hidden;
  box-shadow: var(--shadow-sm); border: 1px solid var(--c-line); transition: transform .4s var(--ease), box-shadow .4s;
}
.media-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
.media-card__img {
  aspect-ratio: 16/10; position: relative; display: grid; place-items: center;
  background: linear-gradient(135deg, #7a1818, #3d0c0c); color: var(--c-gold-light); overflow: hidden;
}
.media-card__img .src-name { font-family: var(--font-serif); font-size: 22px; letter-spacing: 2px; z-index: 2; padding: 0 16px; text-align: center; }
.media-card__img::after {
  content: ""; position: absolute; inset: 0;
  background: repeating-linear-gradient(45deg, rgba(217,192,138,0.05) 0 12px, transparent 12px 24px);
}
.media-card__tag { position: absolute; top: 14px; left: 14px; background: rgba(20,7,6,0.55); color: var(--c-gold-light); padding: 4px 12px; border-radius: 20px; font-size: 12px; z-index: 3; backdrop-filter: blur(4px); }
.media-card__body { padding: 22px 24px; }
.media-card__body h4 { font-size: 17px; line-height: 1.5; }
.media-card__body p { color: var(--c-text-muted); font-size: 14px; margin-top: 10px; }
.media-card__more { margin-top: 14px; color: var(--c-red); font-weight: 600; font-size: 14px; display: inline-flex; align-items: center; gap: 6px; }
.media-card__more svg { width: 16px; height: 16px; transition: transform .3s; }
.media-card:hover .media-card__more svg { transform: translateX(4px); }

/* =========================================================
   获奖证书
   ========================================================= */
.certs { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.cert {
  position: relative; aspect-ratio: 3/4; border-radius: var(--radius);
  background: linear-gradient(160deg, #fdfaf2, #f1e7d3); border: 1px solid var(--c-line);
  box-shadow: var(--shadow-sm); padding: 26px 22px; display: flex; flex-direction: column;
  justify-content: space-between; overflow: hidden; transition: transform .4s var(--ease), box-shadow .4s;
}
.cert::before {
  content: ""; position: absolute; inset: 10px; border: 1.5px solid rgba(192,160,98,0.45); border-radius: 10px; pointer-events: none;
}
.cert:hover { transform: translateY(-8px) scale(1.01); box-shadow: var(--shadow-lg); }
.cert__top { display: flex; justify-content: space-between; align-items: flex-start; z-index: 2; }
.cert__seal {
  width: 50px; height: 50px; border-radius: 50%; display: grid; place-items: center;
  border: 2px solid var(--c-red); color: var(--c-red); font-family: var(--font-serif);
  font-size: 12px; font-weight: 700; text-align: center; line-height: 1.1; transform: rotate(-12deg);
  opacity: .85;
}
.cert__level { font-size: 12px; letter-spacing: 2px; color: var(--c-gold-deep); }
.cert__body { z-index: 2; }
.cert__icon { color: var(--c-gold-deep); margin-bottom: 14px; }
.cert__icon svg { width: 38px; height: 38px; }
.cert h4 { font-size: 17px; line-height: 1.45; color: var(--c-ink); }
.cert p { font-size: 13px; color: var(--c-text-muted); margin-top: 8px; z-index: 2; }

/* =========================================================
   推广应用 / 通用内容页
   ========================================================= */
.page-hero {
  position: relative; padding: 180px 0 90px; color: #f6ecda; overflow: hidden;
}
.page-hero__bg {
  position: absolute; inset: 0; z-index: -1;
  background:
    radial-gradient(900px 500px at 80% 0%, rgba(176,40,32,0.4), transparent 55%),
    linear-gradient(150deg, #2c100e, #160706);
}
.page-hero__bg::after { content:""; position:absolute; inset:0; background: radial-gradient(circle at center, transparent 55%, rgba(0,0,0,0.4)); }
.page-hero .crumb { font-size: 13px; letter-spacing: 2px; color: var(--c-gold-light); margin-bottom: 18px; }
.page-hero .crumb a:hover { color: #fff; }
.page-hero h1 { font-size: clamp(30px, 5vw, 52px); color: #fdf6e8; letter-spacing: 2px; }
.page-hero p { margin-top: 16px; color: #e2d4bd; font-size: 17px; max-width: 720px; }

.prose { max-width: 880px; margin: 0 auto; }
.prose h3 { font-size: 24px; margin: 40px 0 16px; color: var(--c-red); letter-spacing: 1px; position: relative; padding-left: 18px; }
.prose h3::before { content:""; position:absolute; left:0; top:6px; bottom:6px; width:5px; border-radius:4px; background: linear-gradient(var(--c-gold), var(--c-gold-deep)); }
.prose p { color: var(--c-text); margin: 14px 0; font-size: 16px; }
.prose ul.bullets { margin: 14px 0; }
.prose ul.bullets li { position: relative; padding-left: 26px; margin: 10px 0; color: var(--c-text); }
.prose ul.bullets li::before { content:""; position:absolute; left:6px; top:12px; width:8px; height:8px; border-radius:50%; background: var(--c-gold); }

/* 卡片网格（应用单位 / 资料下载等） */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.card-tile {
  background: var(--c-white); border: 1px solid var(--c-line); border-radius: var(--radius);
  padding: 30px 28px; box-shadow: var(--shadow-sm); transition: transform .35s var(--ease), box-shadow .35s;
}
.card-tile:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.card-tile__icon { width: 54px; height: 54px; border-radius: 13px; display: grid; place-items: center; background: linear-gradient(135deg, #fbeeea, #f3d9d2); color: var(--c-red); margin-bottom: 18px; }
.card-tile__icon svg { width: 27px; height: 27px; }
.card-tile h4 { font-size: 18px; margin-bottom: 8px; }
.card-tile p { color: var(--c-text-muted); font-size: 14.5px; }

/* 资料/下载列表 */
.doc-list { display: grid; gap: 16px; }
.doc-item {
  display: flex; align-items: center; gap: 20px; background: var(--c-white);
  border: 1px solid var(--c-line); border-radius: var(--radius); padding: 22px 26px;
  box-shadow: var(--shadow-sm); transition: transform .3s var(--ease), box-shadow .3s, border-color .3s;
}
.doc-item:hover { transform: translateX(6px); box-shadow: var(--shadow-md); border-color: var(--c-gold); }
.doc-item__icon { flex: none; width: 50px; height: 50px; border-radius: 12px; display: grid; place-items: center; background: linear-gradient(135deg, var(--c-red-soft), var(--c-red-deep)); color: #fff; }
.doc-item__icon svg { width: 24px; height: 24px; }
.doc-item__body { flex: 1; }
.doc-item__body h4 { font-size: 17px; }
.doc-item__body p { color: var(--c-text-muted); font-size: 13.5px; margin-top: 3px; }
.doc-item__action { color: var(--c-gold-deep); font-weight: 600; font-size: 14px; white-space: nowrap; display: inline-flex; align-items: center; gap: 6px; }
.doc-item__action svg { width: 18px; height: 18px; }

/* =========================================================
   CTA 区块
   ========================================================= */
.cta {
  text-align: center; padding: 80px 40px; border-radius: var(--radius-lg);
  background:
    radial-gradient(700px 300px at 50% 0%, rgba(192,160,98,0.18), transparent 60%),
    linear-gradient(150deg, #2c100e, #160706);
  color: #f6ecda; position: relative; overflow: hidden;
}
.cta h2 { color: #fdf6e8; font-size: clamp(24px, 3.4vw, 36px); }
.cta p { color: #e2d4bd; margin: 16px auto 30px; max-width: 600px; }
.cta__btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* =========================================================
   页脚
   ========================================================= */
.footer { background: linear-gradient(180deg, #190b0a, #100706); color: #cdbfa9; padding: 70px 0 0; }
.footer__top { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 40px; padding-bottom: 50px; border-bottom: 1px solid rgba(217,192,138,0.15); }
.footer__brand .brand__name { color: #f6ead2; }
.footer__brand .brand__sub { color: #b9a988; }
.footer__brand p { margin-top: 18px; font-size: 14px; color: #b3a48d; max-width: 320px; }
.footer__col h5 { color: var(--c-gold-light); font-family: var(--font-serif); font-size: 16px; margin-bottom: 18px; letter-spacing: 1px; }
.footer__col a, .footer__col li { display: block; color: #b3a48d; font-size: 14px; margin: 10px 0; transition: color .3s; }
.footer__col a:hover { color: var(--c-gold-light); }
.footer__contact li { display: flex; gap: 10px; align-items: flex-start; }
.footer__contact svg { width: 17px; height: 17px; flex: none; margin-top: 4px; color: var(--c-gold); }
.footer__bottom { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; padding: 26px 0; font-size: 13px; color: #8f8270; }
.footer__bottom a:hover { color: var(--c-gold-light); }

/* =========================================================
   滚动出现动画
   ========================================================= */
.reveal { opacity: 0; transform: translateY(36px); transition: opacity .8s var(--ease), transform .8s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: .08s; }
.reveal.d2 { transition-delay: .16s; }
.reveal.d3 { transition-delay: .24s; }
.reveal.d4 { transition-delay: .32s; }

/* =========================================================
   响应式
   ========================================================= */
@media (max-width: 1024px) {
  .footer__top { grid-template-columns: 1fr 1fr; }
  .pillars, .innov, .problems { grid-template-columns: 1fr; }
  .stats-grid, .certs, .media-grid, .cards { grid-template-columns: repeat(2, 1fr); }
  .papers { grid-template-columns: 1fr; }
  .leader { grid-template-columns: 1fr; gap: 40px; }
  .leader__photo { max-width: 360px; margin: 0 auto; }
}

@media (max-width: 860px) {
  .menu {
    position: fixed; inset: 0 0 0 auto; width: min(82vw, 340px); flex-direction: column;
    align-items: stretch; justify-content: flex-start; gap: 4px; padding: 110px 24px 40px;
    background: linear-gradient(160deg, #20100e, #140706); transform: translateX(100%);
    transition: transform .45s var(--ease); box-shadow: -20px 0 60px rgba(0,0,0,0.4);
  }
  .menu.open { transform: none; }
  .menu a { color: #f3e8d6 !important; padding: 14px 18px; font-size: 17px; border-bottom: 1px solid rgba(217,192,138,0.12); }
  .menu a::after { display: none; }
  .nav-toggle { display: flex; z-index: 1100; }
  .header.scrolled .nav, .nav { height: 70px; }

  .hero__stats { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .timeline::before { left: 18px; }
  .tl-item { width: 100%; left: 0 !important; padding-left: 50px; padding-right: 0; text-align: left !important; }
  .tl-item::after { left: 10px !important; right: auto !important; }
}

@media (max-width: 560px) {
  .section { padding: 64px 0; }
  .hero h1 { font-size: clamp(22px, 6.6vw, 30px); }
  .stats-grid, .certs, .media-grid, .cards { grid-template-columns: 1fr; }
  .leader__meta { grid-template-columns: 1fr; }
  .hero__cta { flex-direction: column; }
  .hero__cta .btn { width: 100%; justify-content: center; }
  .cta { padding: 56px 22px; }
  .footer__top { grid-template-columns: 1fr; }
}

/* 减少动效偏好 */
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}