:root {
  --paper: #f6f4ec;
  --card: #ffffff;
  --ink: #20261f;
  --muted: #6d6f68;
  --line: #e4e0d3;
  --green: #4b8b3b;
  --green-deep: #2f5c26;
  --green-soft: #e8f1e0;
  --purple: #4b3f8f;
  --purple-soft: #eceafa;
  --gold: #9a7b26;
  --radius: 14px;
  --serif: "Songti SC", "STSong", "Source Han Serif SC", "Noto Serif CJK SC", Georgia, serif;
  --sans: -apple-system, "Segoe UI", "Microsoft YaHei", "PingFang SC", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: 1020px; margin: 0 auto; padding: 0 24px; }
a { color: var(--green-deep); }

.topbar { background: var(--green-deep); color: #dbe9cf; font-size: 12.5px; letter-spacing: .02em; }
.topbar .wrap { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; padding-top: 8px; padding-bottom: 8px; }

.site-head { background: var(--card); border-bottom: 1px solid var(--line); }
.brand { display: flex; align-items: center; gap: 14px; padding: 18px 0 16px; }
.brand h1 { font-family: var(--serif); font-size: 25px; font-weight: 500; margin: 0; letter-spacing: .08em; }
.brand p { margin: 2px 0 0; font-size: 12.5px; color: var(--muted); letter-spacing: .1em; }
.brand .mark { margin-left: auto; text-align: right; font-size: 12.5px; color: var(--muted); line-height: 1.6; }

nav.main { border-top: 1px solid var(--line); }
nav.main ul { display: flex; gap: 28px; list-style: none; margin: 0; padding: 0; flex-wrap: wrap; }
nav.main a { display: block; padding: 12px 0; font-size: 14.5px; color: #3a3f38; text-decoration: none; border-bottom: 2px solid transparent; }
nav.main a:hover { color: var(--green-deep); border-bottom-color: var(--green); }
nav.main .soon { color: #a9aca4; }
nav.main .soon::after { content: "筹备中"; font-size: 11px; border: 1px solid var(--line); border-radius: 999px; padding: 1px 7px; margin-left: 8px; vertical-align: 1px; }

.hero { display: grid; grid-template-columns: 1.05fr .95fr; gap: 44px; align-items: center; padding: 58px 0 50px; }
.kicker { font-size: 12.5px; letter-spacing: .2em; color: var(--gold); }
.motto { font-family: var(--serif); font-size: 33px; font-weight: 500; line-height: 1.5; margin: 14px 0 0; color: var(--green-deep); min-height: 100px; }
.lead { color: var(--muted); font-size: 15px; margin: 18px 0 26px; max-width: 30em; }
.actions { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }

.btn {
  display: inline-flex; align-items: center; gap: 8px; padding: 11px 22px;
  border-radius: 999px; border: 1px solid var(--green-deep);
  background: var(--green-deep); color: #fff; font-size: 14.5px; font-family: inherit;
  cursor: pointer; text-decoration: none;
}
.btn:hover { background: #25491e; }
.btn.ghost { background: transparent; color: var(--green-deep); }
.btn.ghost:hover { background: var(--green-soft); }
.btn[disabled] { opacity: .55; cursor: not-allowed; }

.frog-stage { position: relative; text-align: center; }
.frog-stage svg { max-width: 100%; height: auto; }
.frog-btn { background: none; border: none; padding: 0; cursor: pointer; display: block; margin: 0 auto; }
.bubble {
  position: absolute; left: 50%; top: 4px; transform: translate(-50%, -6px);
  background: var(--card); border: 1px solid var(--line); border-radius: 14px;
  padding: 9px 15px; font-size: 13.5px; max-width: 280px;
  opacity: 0; transition: opacity .25s, transform .25s; pointer-events: none;
}
.bubble.on { opacity: 1; transform: translate(-50%, 0); }

.arms-laugh, .mouth-laugh { display: none; }
#frogBtn.laugh .arms-quiet, #frogBtn.laugh .mouth-quiet { display: none; }
#frogBtn.laugh .arms-laugh, #frogBtn.laugh .mouth-laugh { display: block; }
#frogEyes { transform-box: fill-box; transform-origin: center; transition: transform .12s ease; }
#frogBtn.laugh #frogEyes { transform: scaleY(.3); }
#frogBtn.laugh svg { animation: laughShake .42s ease-in-out 2; }
@keyframes laughShake {
  0%, 100% { transform: translate(0, 0) rotate(0); }
  20% { transform: translate(-5px, 1px) rotate(-2deg); }
  40% { transform: translate(5px, -1px) rotate(2deg); }
  60% { transform: translate(-4px, -1px) rotate(-1.6deg); }
  80% { transform: translate(4px, 1px) rotate(1.6deg); }
}
@media (prefers-reduced-motion: reduce) {
  #frogBtn.laugh svg { animation: none; }
}

.sec { padding: 52px 0 56px; border-top: 1px solid var(--line); }
.sec h2 { font-family: var(--serif); font-size: 24px; font-weight: 500; margin: 0 0 8px; letter-spacing: .06em; }
.sec .sub { color: var(--muted); font-size: 14px; margin: 0 0 30px; }

.notice-board { background: var(--card); border: 1px solid var(--line); border-left: 4px solid var(--gold); border-radius: 6px; padding: 22px 26px; }
.notice-board .label { font-size: 12.5px; letter-spacing: .16em; color: var(--gold); }
.notice-board .today { font-family: var(--serif); font-size: 19px; margin: 10px 0 6px; }
.notice-board .meta { font-size: 13.5px; color: var(--muted); }

.grid { display: grid; gap: 18px; grid-template-columns: repeat(auto-fit, minmax(232px, 1fr)); }
.dept { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px 22px 22px; }
.dept h3 { font-family: var(--serif); font-size: 18px; font-weight: 500; margin: 0; letter-spacing: .04em; }
.dept .degree { font-size: 12px; color: var(--gold); letter-spacing: .06em; margin-top: 6px; }
.dept p { font-size: 14px; color: #4c5148; margin: 14px 0 0; }
.dept ul { margin: 14px 0 0; padding-left: 17px; font-size: 13.5px; color: var(--muted); line-height: 1.9; }

.metrics { display: grid; gap: 18px; grid-template-columns: repeat(auto-fit, minmax(168px, 1fr)); margin: 0 0 30px; }
.metric { background: var(--green-soft); border-radius: var(--radius); padding: 20px 22px; }
.metric b { display: block; font-family: var(--serif); font-size: 25px; font-weight: 500; color: var(--green-deep); line-height: 1.4; }
.metric span { font-size: 13px; color: var(--muted); }

.quote { background: var(--purple-soft); border-radius: var(--radius); padding: 34px 36px; }
.quote blockquote { font-family: var(--serif); font-size: 19px; line-height: 2; margin: 0; color: #2c2740; }
.quote blockquote p { margin: 0 0 12px; }
.quote blockquote p:last-child { margin-bottom: 0; }
.quote .sign { margin-top: 22px; font-size: 13.5px; color: var(--muted); }
.quote .paw { font-family: var(--serif); font-size: 15px; color: var(--purple); letter-spacing: .1em; }

.gallery { display: grid; gap: 18px; grid-template-columns: repeat(auto-fit, minmax(238px, 1fr)); }
.gcard { margin: 0; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 14px 20px; }
.gcard svg { display: block; width: 100%; height: auto; border-radius: 8px; }
.gcard h3 { font-family: var(--serif); font-size: 16px; font-weight: 500; margin: 15px 0 5px; letter-spacing: .04em; }
.gcard p { font-size: 13px; color: var(--muted); margin: 0; line-height: 1.7; }

.news { list-style: none; margin: 0; padding: 0; }
.news li { display: flex; gap: 20px; padding: 17px 0; border-top: 1px solid var(--line); font-size: 14.5px; }
.news li:first-child { border-top: none; }
.news time { color: var(--muted); font-size: 13px; min-width: 92px; flex-shrink: 0; font-variant-numeric: tabular-nums; padding-top: 2px; }

.roadmap { display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.roadmap div { border: 1px dashed #cfcbbb; border-radius: var(--radius); padding: 18px 20px; font-size: 13.5px; color: var(--muted); }
.roadmap strong { display: block; font-size: 14.5px; color: var(--ink); font-weight: 500; margin-bottom: 4px; }

.site-foot { background: #20261f; color: #b9bab1; font-size: 13px; padding: 44px 0 40px; margin-top: 0; }
.site-foot .cols { display: flex; justify-content: space-between; gap: 32px; flex-wrap: wrap; }
.site-foot .brandline { font-family: var(--serif); font-size: 17px; color: #e8e6dd; letter-spacing: .08em; margin: 0 0 10px; }
.site-foot p { margin: 0 0 6px; }
.site-foot .fine { margin-top: 28px; padding-top: 20px; border-top: 1px solid #383e35; font-size: 12.5px; color: #8d8f86; }

.err { text-align: center; padding: 84px 0 96px; }
.err h1 { font-family: var(--serif); font-size: 68px; font-weight: 500; margin: 0; letter-spacing: .1em; color: var(--green-deep); }
.err h2 { font-family: var(--serif); font-size: 24px; font-weight: 500; margin: 8px 0 0; }
.err p { color: var(--muted); font-size: 14.5px; max-width: 30em; margin: 18px auto 30px; }

/* ---------- 通用小字与页内标题 ---------- */
.fine { font-size: 12.5px; color: var(--muted); margin: 16px 0 0; line-height: 1.8; }
.page-head { padding: 46px 0 6px; }
.page-head h2 { font-family: var(--serif); font-size: 30px; font-weight: 500; margin: 0; letter-spacing: .06em; }
.page-head .sub { color: var(--muted); font-size: 14.5px; margin: 12px 0 0; max-width: 36em; }
.crumbs { font-size: 12.5px; color: var(--muted); padding-top: 18px; }
.crumbs a { color: var(--muted); text-decoration: none; }
.crumbs a:hover { color: var(--green-deep); text-decoration: underline; }

/* ---------- 重点课程 ---------- */
.course-hero { display: grid; grid-template-columns: 1.12fr .88fr; gap: 30px; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 30px 30px 26px; align-items: start; }
.course-text h3 { font-family: var(--serif); font-size: 27px; font-weight: 500; margin: 10px 0 0; letter-spacing: .06em; color: var(--green-deep); }
.course-desc { font-size: 15px; color: #4c5148; margin: 16px 0 0; }
.course-points { list-style: none; margin: 20px 0 0; padding: 0; }
.course-points li { display: flex; gap: 14px; font-size: 13.8px; color: var(--muted); padding: 9px 0; border-top: 1px dashed var(--line); }
.course-points li b { flex-shrink: 0; min-width: 4.8em; color: var(--ink); font-weight: 500; }
.course-figure { text-align: center; }
.course-figure svg { display: block; width: 100%; height: auto; border: 1px solid var(--line); border-radius: 12px; }
.course-figure .cap { font-size: 12.5px; color: var(--muted); margin: 12px 0 0; line-height: 1.7; }

/* ---------- 学生入口 ---------- */
.linkcards { display: grid; gap: 18px; grid-template-columns: repeat(auto-fit, minmax(248px, 1fr)); }
.linkcard { display: block; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px 22px 22px; text-decoration: none; color: inherit; transition: border-color .18s, transform .18s, box-shadow .18s; }
.linkcard:hover { border-color: var(--green); transform: translateY(-3px); box-shadow: 0 10px 24px rgba(47, 92, 38, .09); }
.linkcard h3 { font-family: var(--serif); font-size: 19px; font-weight: 500; margin: 10px 0 0; letter-spacing: .04em; }
.linkcard p { font-size: 13.8px; color: var(--muted); margin: 12px 0 16px; }
.lc-tag { display: inline-block; font-size: 11.5px; letter-spacing: .12em; color: var(--gold); border: 1px solid var(--line); border-radius: 999px; padding: 2px 10px; }
.lc-go { font-size: 13.5px; color: var(--green-deep); }

/* ---------- 表单 ---------- */
.form-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 24px; margin: 26px 0 30px; }
.form-row { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(184px, 1fr)); }
.field label { display: block; font-size: 12.5px; color: var(--muted); letter-spacing: .06em; margin-bottom: 7px; }
.field input, .field select { width: 100%; padding: 11px 13px; font-size: 14.5px; font-family: inherit; color: var(--ink); background: #fbfaf5; border: 1px solid var(--line); border-radius: 10px; }
.field input:focus, .field select:focus { outline: none; border-color: var(--green); background: #fff; }
.form-actions { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; margin-top: 22px; }

/* ---------- 录取通知书 ---------- */
.letter-stage { overflow-x: auto; padding: 4px 0 16px; }
#letterSvg { display: block; width: 100%; max-width: 700px; height: auto; margin: 0 auto; border-radius: 4px; box-shadow: 0 16px 42px rgba(32, 38, 31, .14); }
.steps { font-size: 13px; color: var(--muted); line-height: 1.9; margin: 18px 0 0; padding-left: 20px; }

/* ---------- 教务系统 ---------- */
.login-card { max-width: 460px; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 30px 28px 26px; margin: 26px auto 40px; }
.login-card h3 { font-family: var(--serif); font-size: 21px; font-weight: 500; margin: 0 0 6px; text-align: center; letter-spacing: .08em; }
.login-card .cap { text-align: center; font-size: 13px; color: var(--muted); margin: 0 0 24px; }
.captcha { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: 18px; padding: 10px 14px; background: var(--green-soft); border-radius: 10px; font-size: 13px; color: var(--muted); }
.captcha b { font-family: var(--serif); letter-spacing: .2em; color: var(--green-deep); font-size: 15px; }
.profile { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 24px; }
.profile dl { display: grid; grid-template-columns: repeat(auto-fit, minmax(168px, 1fr)); gap: 20px 26px; margin: 0; }
.profile dt { font-size: 12.5px; color: var(--muted); letter-spacing: .06em; }
.profile dd { margin: 6px 0 0; font-size: 15px; font-family: var(--serif); }
.idcard { display: flex; align-items: center; gap: 18px; padding-bottom: 22px; margin-bottom: 24px; border-bottom: 1px solid var(--line); }
.idcard .who { font-family: var(--serif); font-size: 22px; letter-spacing: .06em; }
.idcard .who span { display: block; font-family: var(--sans); font-size: 12.5px; color: var(--muted); letter-spacing: 0; margin-top: 4px; }
.tbl-wrap { overflow-x: auto; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); }
table.tbl { width: 100%; border-collapse: collapse; font-size: 14px; }
table.tbl th, table.tbl td { text-align: left; padding: 11px 14px; border-bottom: 1px solid var(--line); }
table.tbl th { font-size: 12.5px; color: var(--muted); font-weight: 400; letter-spacing: .06em; background: #fbfaf5; }
table.tbl tr:last-child td { border-bottom: none; }
table.tbl td.num { font-variant-numeric: tabular-nums; }
table.tbl td.note { font-size: 12.5px; color: var(--muted); }
table.timetable { width: 100%; border-collapse: collapse; font-size: 13px; min-width: 660px; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); }
table.timetable th, table.timetable td { border: 1px solid var(--line); padding: 8px 9px; vertical-align: top; font-weight: 400; }
table.timetable th { background: #fbfaf5; font-size: 12.5px; color: var(--muted); text-align: center; }
table.timetable td { height: 66px; }
.cell-course { background: var(--green-soft); border-radius: 8px; padding: 6px 8px; font-size: 12.5px; line-height: 1.55; }
.cell-course b { display: block; font-weight: 500; color: var(--green-deep); }
.cell-course span { color: var(--muted); font-size: 11.5px; }
.cell-course.alt { background: var(--purple-soft); }
.cell-course.alt b { color: #3b3170; }
.cell-course.gold { background: #f7efd8; }
.cell-course.gold b { color: #7d6320; }
.banner { background: var(--purple-soft); border-left: 4px solid var(--purple); border-radius: 6px; padding: 16px 20px; font-size: 13.8px; color: #2c2740; margin: 26px 0 0; }
.banner b { font-weight: 500; }

/* ---------- 荷叶漂浮 ---------- */
.game-wrap { position: relative; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px; margin: 24px 0 28px; }
#pond { display: block; width: 100%; height: auto; border-radius: 10px; touch-action: none; cursor: pointer; }
.hud { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; font-size: 13px; color: var(--muted); padding: 2px 4px 12px; }
.hud b { color: var(--ink); font-family: var(--serif); font-size: 17px; }
.game-over { position: absolute; inset: 14px; background: rgba(246, 244, 236, .94); border-radius: 10px; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 12px; text-align: center; padding: 24px; opacity: 0; pointer-events: none; transition: opacity .3s; }
.game-over.on { opacity: 1; pointer-events: auto; }
.game-over h3 { font-family: var(--serif); font-size: 25px; font-weight: 500; margin: 0; letter-spacing: .08em; }
.game-over p { font-size: 14px; color: var(--muted); margin: 0; max-width: 30em; }

@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; gap: 30px; padding: 40px 0 36px; }
  .motto { font-size: 26px; min-height: 80px; }
  .frog-stage { order: -1; max-width: 340px; margin: 0 auto; }
  .brand .mark { display: none; }
  nav.main ul { gap: 20px; }
  .sec { padding: 40px 0 44px; }
  .quote { padding: 26px 22px; }
  .quote blockquote { font-size: 17px; }
  .course-hero { grid-template-columns: 1fr; gap: 24px; padding: 24px 20px; }
  .course-text h3 { font-size: 23px; }
  .course-points li { flex-direction: column; gap: 2px; }
  .page-head { padding: 32px 0 4px; }
  .page-head h2 { font-size: 25px; }
  .form-card { padding: 20px 16px; }
  .profile { padding: 20px 16px; }
  .idcard { flex-direction: column; align-items: flex-start; gap: 12px; }
}