/* ==========================================================================
   野鸡私立大学 — 样式表
   模块：令牌 / 基础 / 按钮 / 导航 / 抽屉 / Hero / 通用区块 / 使命 / 专业
         / 师资 / 校园 / 评价 / CTA / 页脚 / 弹窗 / 响应式 / 减少动态
   ========================================================================== */

/* 1. 设计令牌
   -------------------------------------------------------------------------- */
:root {
  --bg: #F7F5F0;
  --bg-soft: #EFEBE1;
  --ink: #1A1A1A;
  --ink-2: #46423A;
  --ink-3: #7B7466;
  --green: #1E3A34;
  --green-2: #27473F;
  --green-deep: #162C27;
  --bronze: #8A7A5C;
  --bronze-2: #6E6048;
  --line: #E0DBD1;
  --line-strong: #C9C1B1;
  --paper: #FFFFFF;
  --ok: #4E7A5F;
  --warn: #A5813C;
  --font-serif: "Source Serif 4", "Noto Serif SC", "Songti SC", "SimSun", serif;
  --font-sans: "Inter", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --maxw: 1240px;
  --gutter: clamp(1.25rem, 4vw, 3rem);
  --nav-h: 68px;
  --radius: 3px;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

/* 2. 基础
   -------------------------------------------------------------------------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: 0;
  overflow-wrap: break-word;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img,
svg {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

h1, h2, h3, h4, p, figure, blockquote, dl, dd {
  margin: 0;
}

.container {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.icon {
  width: 1.25em;
  height: 1.25em;
  flex-shrink: 0;
}

.accent {
  color: var(--bronze-2);
  font-weight: 500;
}

section[id],
footer[id] {
  scroll-margin-top: calc(var(--nav-h) + 12px);
}

::selection {
  background: var(--green);
  color: var(--bg);
}

:focus-visible {
  outline: 2px solid var(--bronze);
  outline-offset: 3px;
  border-radius: 2px;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -100%;
  z-index: 400;
  padding: 0.75rem 1.25rem;
  background: var(--green);
  color: var(--bg);
  border-radius: var(--radius);
  transition: top 0.2s var(--ease-out);
}

.skip-link:focus {
  top: 1rem;
}

/* 3. 按钮
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  min-height: 44px;
  padding: 0.7rem 1.4rem;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: background-color 0.35s var(--ease-out), border-color 0.35s var(--ease-out), color 0.35s var(--ease-out), transform 0.35s var(--ease-out);
}

.btn--solid {
  background: var(--green);
  color: var(--bg);
}

.btn--solid:hover {
  background: var(--green-2);
  transform: translateY(-1px);
}

.btn--ghost {
  background: transparent;
  color: var(--ink);
}

.btn--ghost:hover {
  color: var(--green);
}

.btn--outline {
  background: transparent;
  color: var(--green);
  border-color: var(--green);
}

.btn--outline:hover {
  background: var(--green);
  color: var(--bg);
}

.btn--light {
  background: var(--bg);
  color: var(--green);
}

.btn--light:hover {
  background: #EDE9DF;
  transform: translateY(-1px);
}

.btn--lg {
  min-height: 52px;
  padding: 0.95rem 1.8rem;
  font-size: 1rem;
}

.btn .icon {
  transition: transform 0.35s var(--ease-out);
}

.btn:hover .icon {
  transform: translateX(3px);
}

/* 4. 导航
   -------------------------------------------------------------------------- */
.site-header {
  position: fixed;
  inset-inline: 0;
  top: 0;
  z-index: 200;
  background: rgba(247, 245, 240, 0.9);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.35s var(--ease-out), background-color 0.35s var(--ease-out), box-shadow 0.35s var(--ease-out);
}

.site-header.is-scrolled {
  background: rgba(247, 245, 240, 0.97);
  border-bottom-color: var(--line);
  box-shadow: 0 1px 0 rgba(26, 26, 26, 0.03);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-h);
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  min-width: 0;
}

.brand__mark {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
  object-fit: contain;
}

.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
  min-width: 0;
}

.brand__name {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--ink);
  white-space: nowrap;
}

.brand__sub {
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  color: var(--ink-3);
  margin-top: 3px;
  white-space: nowrap;
}

.nav__links {
  display: none;
  align-items: center;
  gap: 2.2rem;
}

.nav__links a {
  position: relative;
  font-size: 0.93rem;
  font-weight: 500;
  color: var(--ink-2);
  padding: 0.4rem 0;
  transition: color 0.3s var(--ease-out);
}

.nav__links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: var(--bronze);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s var(--ease-out);
}

.nav__links a:hover {
  color: var(--ink);
}

.nav__links a:hover::after {
  transform: scaleX(1);
}

.nav__actions {
  display: none;
  align-items: center;
  gap: 0.5rem;
}

.nav__toggle {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  background: transparent;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  color: var(--ink);
  cursor: pointer;
}

.nav__toggle .icon--close {
  display: none;
}

body.nav-open .nav__toggle .icon--menu {
  display: none;
}

body.nav-open .nav__toggle .icon--close {
  display: block;
}

/* 5. 移动端抽屉导航
   -------------------------------------------------------------------------- */
.mobile-nav {
  position: fixed;
  top: var(--nav-h);
  right: 0;
  bottom: 0;
  z-index: 310;
  width: min(82vw, 340px);
  background: var(--bg);
  border-left: 1px solid var(--line);
  transform: translateX(105%);
  transition: transform 0.45s var(--ease-out), visibility 0.45s;
  overflow-y: auto;
  visibility: hidden;
}

body.nav-open .mobile-nav {
  transform: translateX(0);
  visibility: visible;
}

.mobile-nav__inner {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding-block: 1.25rem 2.5rem;
}

.mobile-nav__link {
  padding: 1rem 0.25rem;
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--ink);
  border-bottom: 1px solid var(--line);
}

.mobile-nav__actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.nav-overlay {
  position: fixed;
  top: var(--nav-h);
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 300;
  background: rgba(26, 26, 26, 0.45);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.45s var(--ease-out), visibility 0.45s;
}

body.nav-open .nav-overlay {
  opacity: 1;
  visibility: visible;
}

body.nav-open {
  overflow: hidden;
}

/* 6. Hero
   -------------------------------------------------------------------------- */
.hero {
  position: relative;
  padding-block: calc(var(--nav-h) + clamp(2.75rem, 7vw, 5.5rem)) clamp(3rem, 7vw, 6rem);
}

.hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(2.5rem, 5vw, 4rem);
  align-items: start;
}

.hero__kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--bronze-2);
  margin-bottom: 1.5rem;
}

.hero__kicker::before {
  content: "";
  width: 28px;
  height: 1px;
  background: var(--bronze);
}

.hero__title {
  font-family: var(--font-serif);
  font-weight: 600;
  line-height: 1.18;
  margin-bottom: 1.5rem;
}

.hero__title-line {
  display: block;
  font-size: clamp(2.2rem, 9vw, 4.4rem);
  font-weight: 700;
  color: var(--green);
  letter-spacing: 0.01em;
}

.hero__title-en {
  display: block;
  margin-top: 0.75rem;
  font-size: clamp(1.05rem, 3.4vw, 1.7rem);
  font-weight: 400;
  font-style: italic;
  color: var(--ink-2);
  letter-spacing: 0.01em;
}

.hero__typing {
  min-height: 1.9em;
  font-family: var(--font-serif);
  font-size: clamp(1.15rem, 3vw, 1.5rem);
  color: var(--ink);
  margin-bottom: 1.25rem;
}

.typing-caret {
  display: inline-block;
  width: 2px;
  height: 1em;
  margin-left: 3px;
  background: var(--bronze);
  vertical-align: -0.12em;
  animation: caret-blink 1s steps(1) infinite;
}

@keyframes caret-blink {
  50% { opacity: 0; }
}

.hero__intro {
  max-width: 34rem;
  font-size: 1.05rem;
  color: var(--ink-2);
  margin-bottom: 2rem;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
}

.hero__panel {
  position: relative;
  min-height: 340px;
  padding: clamp(1.75rem, 4vw, 2.75rem);
  background: var(--green);
  color: var(--bg);
  border-radius: var(--radius);
  overflow: hidden;
}

.hero__panel-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(247, 245, 240, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(247, 245, 240, 0.05) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}

.hero__infinity {
  display: block;
  font-family: var(--font-serif);
  font-size: clamp(4.5rem, 12vw, 8rem);
  line-height: 0.85;
  color: rgba(247, 245, 240, 0.16);
  margin-bottom: 1rem;
  user-select: none;
}

.hero__panel-rank {
  font-size: 0.82rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--bg);
  margin-bottom: 2rem;
}

.hero__panel-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid rgba(247, 245, 240, 0.24);
}

.hero__panel-list li {
  padding: 1rem 0;
  border-bottom: 1px solid rgba(247, 245, 240, 0.24);
  font-size: 0.95rem;
  color: rgba(247, 245, 240, 0.9);
}

.hero__panel-eng {
  position: absolute;
  right: 1.5rem;
  bottom: 1.1rem;
  font-size: 0.62rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: rgba(247, 245, 240, 0.45);
}

.stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  margin-top: clamp(2.5rem, 6vw, 4.5rem);
}

.stat {
  background: var(--bg);
  padding: clamp(1.25rem, 3vw, 2rem);
}

.stat__label {
  font-size: 0.82rem;
  color: var(--ink-3);
  margin-bottom: 0.5rem;
  order: 2;
}

.stat__value {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  color: var(--green);
  line-height: 1;
  margin-bottom: 0.5rem;
}

.stat__value .counter {
  font-variant-numeric: tabular-nums;
}

/* 7. 通用区块
   -------------------------------------------------------------------------- */
.section {
  padding-block: clamp(4rem, 9vw, 7rem);
  border-top: 1px solid var(--line);
}

.mission,
.faculty,
.testimonials {
  background: var(--bg-soft);
}

.section__head {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin-bottom: clamp(2.5rem, 6vw, 4rem);
}

.section__index {
  font-family: var(--font-serif);
  font-size: 0.85rem;
  color: var(--bronze-2);
  letter-spacing: 0.14em;
}

.section__title {
  font-family: var(--font-serif);
  font-size: clamp(1.85rem, 5.5vw, 3rem);
  font-weight: 700;
  color: var(--ink);
  line-height: 1.18;
  letter-spacing: 0.01em;
}

.section__desc {
  max-width: 40rem;
  color: var(--ink-2);
  font-size: 1.02rem;
}

/* 8. 使命
   -------------------------------------------------------------------------- */
.mission__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(2rem, 4vw, 3rem);
  align-items: start;
}

.mission__lead {
  background: var(--paper);
  border: 1px solid var(--line);
  border-top: 3px solid var(--green);
  border-radius: var(--radius);
  padding: clamp(1.75rem, 4vw, 3rem);
}

.mission__lead-title {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 4.5vw, 2.4rem);
  font-weight: 700;
  line-height: 1.22;
  color: var(--ink);
  margin-bottom: 1.25rem;
}

.mission__lead-body {
  color: var(--ink-2);
  font-size: 1.04rem;
  max-width: 60ch;
  margin-bottom: 1.75rem;
}

.mission__benefits {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.mission__benefits li {
  padding: 0.42rem 0.9rem;
  border: 1px solid var(--line-strong);
  border-radius: 100px;
  font-size: 0.84rem;
  color: var(--green);
  letter-spacing: 0.02em;
}

.mission__list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--line);
}

.info-item {
  display: grid;
  grid-template-columns: 3rem 1fr;
  gap: 1rem;
  padding-block: 1.5rem;
  border-bottom: 1px solid var(--line);
}

.info-item__num {
  font-family: var(--font-serif);
  font-size: 0.85rem;
  color: var(--bronze-2);
  padding-top: 0.18rem;
}

.info-item__title {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 0.4rem;
}

.info-item__body {
  color: var(--ink-2);
  font-size: 0.96rem;
  max-width: 46ch;
}

/* 9. 专业
   -------------------------------------------------------------------------- */
.programs__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.program-card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--paper);
  padding: clamp(1.6rem, 4vw, 2.5rem);
  min-height: 240px;
  transition: background-color 0.35s var(--ease-out), box-shadow 0.35s var(--ease-out), transform 0.35s var(--ease-out);
}

.program-card:hover {
  background: #FBFAF7;
  box-shadow: 0 12px 30px -18px rgba(26, 26, 26, 0.25);
  transform: translateY(-3px);
  z-index: 1;
}

.program-card__num {
  font-family: var(--font-serif);
  font-size: 0.85rem;
  color: var(--bronze-2);
  margin-bottom: 1.5rem;
}

.program-card__title {
  font-family: var(--font-serif);
  font-size: clamp(1.4rem, 3vw, 1.75rem);
  font-weight: 700;
  color: var(--ink);
  line-height: 1.25;
  margin-bottom: 0.8rem;
}

.program-card__body {
  color: var(--ink-2);
  font-size: 0.96rem;
  max-width: 52ch;
  margin-bottom: 1.5rem;
}

.program-card__meta {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-top: auto;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  font-size: 0.82rem;
  color: var(--ink-3);
}

.program-card__credits {
  color: var(--bronze-2);
  font-weight: 600;
}

.program-card--featured {
  background: var(--green);
  color: var(--bg);
}

.program-card--featured:hover {
  background: var(--green-2);
}

.program-card--featured .program-card__num,
.program-card--featured .program-card__credits {
  color: var(--bg);
  opacity: 0.75;
}

.program-card--featured .program-card__title {
  color: var(--bg);
}

.program-card--featured .program-card__body {
  color: rgba(247, 245, 240, 0.82);
}

.program-card--featured .program-card__meta {
  border-top-color: rgba(247, 245, 240, 0.24);
  color: rgba(247, 245, 240, 0.7);
}

/* 10. 师资
   -------------------------------------------------------------------------- */
.faculty__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.25rem, 3vw, 2rem);
}

.faculty-card {
  display: flex;
  gap: 1.25rem;
  padding: clamp(1.4rem, 3vw, 1.75rem);
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color 0.35s var(--ease-out), transform 0.35s var(--ease-out), box-shadow 0.35s var(--ease-out);
}

.faculty-card:hover {
  border-color: var(--line-strong);
  transform: translateY(-3px);
  box-shadow: 0 12px 30px -22px rgba(26, 26, 26, 0.35);
}

.faculty-card__avatar {
  display: grid;
  place-items: center;
  width: 56px;
  height: 56px;
  flex-shrink: 0;
  background: var(--green);
  color: var(--bg);
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  border-radius: var(--radius);
}

.faculty-card__tag {
  display: inline-block;
  padding: 0.22rem 0.65rem;
  border: 1px solid var(--line-strong);
  border-radius: 100px;
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  color: var(--bronze-2);
  margin-bottom: 0.7rem;
}

.faculty-card__name {
  font-family: var(--font-serif);
  font-size: 1.32rem;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 0.25rem;
}

.faculty-card__role {
  font-size: 0.86rem;
  color: var(--bronze-2);
  margin-bottom: 0.75rem;
}

.faculty-card__desc {
  font-size: 0.93rem;
  color: var(--ink-2);
  max-width: 40ch;
}

/* 11. 校园
   -------------------------------------------------------------------------- */
.campus__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(2rem, 4vw, 3rem);
  align-items: start;
}

.campus__facilities {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--line);
}

.facility {
  display: grid;
  grid-template-columns: 3rem 1fr;
  gap: 1rem;
  padding-block: 1.5rem;
  border-bottom: 1px solid var(--line);
}

.facility__num {
  font-family: var(--font-serif);
  font-size: 0.85rem;
  color: var(--bronze-2);
  padding-top: 0.18rem;
}

.facility__title {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 0.4rem;
}

.facility__body {
  color: var(--ink-2);
  font-size: 0.96rem;
  max-width: 50ch;
}

.status-panel {
  background: var(--green);
  color: var(--bg);
  border-radius: var(--radius);
  padding: clamp(1.75rem, 4vw, 2.5rem);
}

.status-panel__title {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
}

.status-panel__list {
  display: flex;
  flex-direction: column;
}

.status-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 0.9rem 0;
  border-bottom: 1px solid rgba(247, 245, 240, 0.16);
}

.status-row__label {
  color: rgba(247, 245, 240, 0.82);
  font-size: 0.93rem;
}

.status-row__value {
  display: inline-flex;
  align-items: center;
  gap: 0.45em;
  font-family: var(--font-serif);
  font-size: 0.95rem;
  color: var(--bg);
  text-align: right;
}

.status-row__value::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: currentColor;
  flex-shrink: 0;
}

.status-row__value--ok {
  color: #BFD8C8;
}

.status-row__value--warn {
  color: #E3CFA4;
}

.status-panel__note {
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid rgba(247, 245, 240, 0.16);
  font-size: 0.85rem;
  color: rgba(247, 245, 240, 0.65);
}

/* 12. 评价
   -------------------------------------------------------------------------- */
.testimonials__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.25rem, 3vw, 2rem);
}

.testimonial {
  position: relative;
  padding: clamp(1.6rem, 4vw, 2.25rem);
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.testimonial__quote {
  display: block;
  font-family: var(--font-serif);
  font-size: 4rem;
  line-height: 0.5;
  color: var(--bronze);
  margin-bottom: 1.25rem;
  user-select: none;
}

.testimonial__body {
  font-family: var(--font-serif);
  font-size: clamp(1.05rem, 2.5vw, 1.2rem);
  line-height: 1.65;
  color: var(--ink);
  margin-bottom: 1.5rem;
}

.testimonial__meta {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.testimonial__stars {
  display: inline-flex;
  gap: 2px;
  color: var(--bronze);
}

.testimonial__stars svg {
  width: 15px;
  height: 15px;
}

.testimonial cite {
  display: flex;
  flex-direction: column;
  font-style: normal;
}

.testimonial__name {
  font-weight: 600;
  color: var(--ink);
}

.testimonial__cohort {
  font-size: 0.82rem;
  color: var(--ink-3);
}

/* 13. CTA
   -------------------------------------------------------------------------- */
.cta {
  padding-block: clamp(3rem, 8vw, 6rem);
  border-top: 1px solid var(--line);
}

.cta__inner {
  position: relative;
  background: var(--green);
  color: var(--bg);
  border-radius: var(--radius);
  padding: clamp(2.25rem, 6vw, 4.5rem);
  overflow: hidden;
}

.cta__inner::after {
  content: "\221E";
  position: absolute;
  right: -0.5rem;
  bottom: -3.5rem;
  font-family: var(--font-serif);
  font-size: 12rem;
  line-height: 1;
  color: rgba(247, 245, 240, 0.05);
  pointer-events: none;
  user-select: none;
}

.cta__title {
  font-family: var(--font-serif);
  font-size: clamp(1.9rem, 5.5vw, 3rem);
  font-weight: 700;
  line-height: 1.18;
  margin-bottom: 1rem;
}

.cta__body {
  max-width: 40rem;
  color: rgba(247, 245, 240, 0.84);
  margin-bottom: 2rem;
  font-size: 1.02rem;
}

.cta__warning {
  margin-top: 1.75rem;
  padding-top: 1.25rem;
  border-top: 1px solid rgba(247, 245, 240, 0.2);
  font-size: 0.85rem;
  color: rgba(247, 245, 240, 0.6);
}

/* 14. 页脚
   -------------------------------------------------------------------------- */
.site-footer {
  background: var(--green-deep);
  color: rgba(247, 245, 240, 0.78);
  padding-block: clamp(3rem, 7vw, 5rem) 2rem;
}

.footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  padding-bottom: 2.5rem;
}

.brand--footer .brand__name {
  color: var(--bg);
}

.brand--footer .brand__sub {
  color: rgba(247, 245, 240, 0.5);
}

.footer__intro {
  margin-top: 1.25rem;
  max-width: 30rem;
  font-size: 0.93rem;
  color: rgba(247, 245, 240, 0.6);
}

.footer__heading {
  font-family: var(--font-serif);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--bg);
  margin-bottom: 1.25rem;
}

.footer__list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer__list a {
  color: rgba(247, 245, 240, 0.7);
  transition: color 0.3s var(--ease-out);
}

.footer__list a:hover {
  color: var(--bg);
}

.footer__list--contact li {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: rgba(247, 245, 240, 0.7);
  overflow-wrap: anywhere;
}

.footer__list--contact .icon {
  width: 1em;
  height: 1em;
  color: rgba(247, 245, 240, 0.5);
}

.footer__social {
  display: flex;
  gap: 0.75rem;
}

.footer__social a {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  min-height: 44px;
  padding: 0.5rem 0.9rem;
  border: 1px solid rgba(247, 245, 240, 0.25);
  border-radius: var(--radius);
  font-size: 0.85rem;
  color: rgba(247, 245, 240, 0.8);
  transition: border-color 0.3s var(--ease-out), color 0.3s var(--ease-out), background-color 0.3s var(--ease-out);
}

.footer__social a:hover {
  border-color: var(--bg);
  color: var(--bg);
  background: rgba(247, 245, 240, 0.06);
}

.footer__social .fa-brands {
  font-size: 1.15rem;
}

.footer__links {
  padding-block: 2rem;
  border-top: 1px solid rgba(247, 245, 240, 0.12);
}

.footer__friends {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.footer__friends a {
  display: inline-flex;
  flex-direction: column;
  gap: 0.1rem;
  padding: 0.75rem 1rem;
  border: 1px solid rgba(247, 245, 240, 0.2);
  border-radius: var(--radius);
  color: rgba(247, 245, 240, 0.8);
  transition: border-color 0.3s var(--ease-out), color 0.3s var(--ease-out);
}

.footer__friends a:hover {
  border-color: var(--bg);
  color: var(--bg);
}

.footer__friends-url {
  font-size: 0.75rem;
  color: rgba(247, 245, 240, 0.45);
  overflow-wrap: anywhere;
}

.footer__bottom {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(247, 245, 240, 0.12);
}

.footer__copyright {
  font-size: 0.85rem;
  color: rgba(247, 245, 240, 0.55);
}

.footer__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.25rem;
  font-size: 0.82rem;
  color: rgba(247, 245, 240, 0.5);
}

.footer__meta a:hover {
  color: var(--bg);
}

/* 15. 弹窗
   -------------------------------------------------------------------------- */
.modal {
  position: fixed;
  inset: 0;
  z-index: 500;
  display: grid;
  place-items: center;
  padding: 1.5rem;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.35s var(--ease-out), visibility 0.35s;
}

.modal.is-visible {
  opacity: 1;
  visibility: visible;
}

.modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(26, 26, 26, 0.55);
}

.modal__panel {
  position: relative;
  width: min(100%, 420px);
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 2.25rem;
  transform: translateY(12px);
  transition: transform 0.35s var(--ease-out);
}

.modal.is-visible .modal__panel {
  transform: translateY(0);
}

.modal__mark {
  display: block;
  font-family: var(--font-serif);
  font-size: 3rem;
  color: var(--bronze);
  line-height: 1;
  margin-bottom: 1rem;
}

.modal__title {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 0.75rem;
}

.modal__body {
  color: var(--ink-2);
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
}

/* 16. 响应式增强
   -------------------------------------------------------------------------- */
@media (max-width: 639px) {
  .cta__inner {
    padding: 2rem 1.4rem;
  }

  .cta__inner::after {
    font-size: 6.5rem;
    right: -0.25rem;
    bottom: -2rem;
  }

  .cta .btn--lg {
    width: 100%;
  }
}

@media (min-width: 640px) {
  .stats {
    grid-template-columns: repeat(4, 1fr);
  }

  .faculty__grid {
    grid-template-columns: 1fr 1fr;
  }

  .footer__grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 768px) {
  :root {
    --nav-h: 76px;
  }

  .programs__grid {
    grid-template-columns: repeat(6, 1fr);
  }

  .program-card:nth-child(1) {
    grid-column: span 3;
    grid-row: span 2;
  }

  .program-card:nth-child(2),
  .program-card:nth-child(3) {
    grid-column: span 3;
  }

  .program-card:nth-child(4),
  .program-card:nth-child(5),
  .program-card:nth-child(6) {
    grid-column: span 2;
  }

  .testimonials__grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .testimonials__grid .testimonial:nth-child(2) {
    position: relative;
    top: 1.5rem;
  }

  .footer__bottom {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

@media (min-width: 1024px) {
  .nav__toggle,
  .mobile-nav,
  .nav-overlay {
    display: none;
  }

  .nav__links {
    display: flex;
  }

  .nav__actions {
    display: flex;
  }

  .hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
  }

  .hero__grid {
    grid-template-columns: 7fr 5fr;
  }

  .hero__panel {
    min-height: 420px;
  }

  .mission__grid {
    grid-template-columns: 7fr 5fr;
  }

  .campus__grid {
    grid-template-columns: 7fr 5fr;
  }

  .faculty__grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .faculty-card {
    flex-direction: column;
  }

  .faculty-card__avatar {
    width: 100%;
    height: 88px;
    font-size: 2rem;
  }

  .faculty__grid .faculty-card:nth-child(2),
  .faculty__grid .faculty-card:nth-child(4) {
    position: relative;
    top: 2rem;
  }

  .footer__grid {
    grid-template-columns: 2fr 1fr 1.3fr 1fr;
    gap: 2rem;
  }
}

@media (min-width: 1280px) {
  .hero__title-line {
    font-size: 4.4rem;
  }
}

/* 17. 减少动态（可访问性）
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}