/* 新联航空官网 · 内页视觉层
   只挂在 courses.html 与 about.html 上；首页不引用本文件，渲染与改动前一致。
   颜色、圆角、阴影全部取 css/site.css 的 :root 令牌，未新造颜色。 */

/* ---------- 夜色首屏（不放照片） ---------- */

.dhero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: 0;
  background-color: var(--night);
  background-image: var(--ridge), var(--glow), var(--sky);
  background-repeat: no-repeat;
  background-size: 100% 46%, 100% 100%, 100% 100%;
  background-position: bottom, center, center;
  color: #fff;
}
/* 暗光 mesh */
.dhero::before {
  content: '';
  position: absolute;
  inset: -18% -8%;
  z-index: 0;
  background-image: var(--mesh);
  filter: saturate(115%);
}
/* 细网格，中间亮、四周淡出 */
.dhero::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 0;
  background-image: var(--grid-lines);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(76% 74% at 50% 30%, #000 18%, transparent 80%);
  mask-image: radial-gradient(76% 74% at 50% 30%, #000 18%, transparent 80%);
}
.dhero > .wrap { position: relative; z-index: 2; padding-top: 96px; padding-bottom: 84px; }
.dhero .eyebrow { margin-bottom: 16px; }
.dhero h1 {
  margin: 0 0 16px;
  max-width: 22em;
  color: #fff;
  font-size: clamp(28px, 4.2vw, 50px);
  line-height: 1.24;
  font-weight: 800;
  letter-spacing: -.3px;
  text-wrap: balance;
}
.dhero-sub {
  margin: 0;
  max-width: 32em;
  color: rgba(232, 238, 247, .92);
  font-size: clamp(15px, 1.35vw, 19px);
  line-height: 1.8;
}
.dfacts {
  display: flex;
  flex-wrap: wrap;
  gap: 22px 0;
  margin: 40px 0 0;
  padding: 24px 0 0;
  border-top: 1px solid rgba(201, 212, 228, .26);
  list-style: none;
}
.dfacts li {
  flex: 1 1 0;
  min-width: 148px;
  padding: 0 26px;
  border-right: 1px solid rgba(201, 212, 228, .2);
}
.dfacts li:first-child { padding-left: 0; }
.dfacts li:last-child { border-right: 0; }
.dfacts b {
  display: block;
  color: #fff;
  font-size: clamp(19px, 2vw, 26px);
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -.2px;
}
.dfacts .t {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  line-height: 1.6;
  color: rgba(201, 212, 228, .82);
}
.dhero .lede {
  margin: 30px 0 0;
  max-width: 46em;
  color: rgba(232, 238, 247, .8);
  font-size: 15.5px;
  line-height: 1.95;
  text-indent: 2em;
}

/* ---------- 班型：一行一张卡 ---------- */

.klass {
  display: grid;
  grid-template-columns: 17em 1fr 1.15fr;
  gap: 10px 34px;
  margin: 0 0 14px;
  padding: 26px 28px;
  border: 1px solid var(--hair);
  border-left: 3px solid var(--gold);
  border-radius: var(--r-sm);
  background: #fff;
  box-shadow: var(--sh-1);
  transition: box-shadow .3s ease, border-color .3s ease;
}
.klass:hover { border-color: var(--track); box-shadow: var(--sh-2); }
.klass h3 {
  margin: 0;
  color: var(--ink);
  font-size: 19px;
  font-weight: 800;
  line-height: 1.5;
  letter-spacing: .2px;
}
.klass .c { font-size: 15px; line-height: 1.85; }
.klass .c p { margin: 0; }
.klass .c b {
  display: block;
  margin-bottom: 5px;
  color: var(--gold);
  font-size: 11.5px;
  font-weight: 800;
  letter-spacing: 2.4px;
}
.pill {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin: 14px 0 0;
  padding: 4px 13px;
  border-radius: 999px;
  background: var(--wash);
  color: var(--blue);
  font-size: 12.5px;
  font-weight: 800;
  letter-spacing: 1.2px;
}
.pill::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--gold);
}

/* ---------- 图文分栏 ---------- */

.split {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 30px;
  align-items: start;
}
.split--rev { grid-template-columns: .85fr 1.15fr; }
.split--rev > .split-side { order: -1; }
.split > .card { margin: 0; }
.split-side { display: grid; gap: 20px; align-content: start; }
.split-side .note { margin: 0; }
.split-figure {
  position: relative;
  margin: 0;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border-radius: var(--r);
  box-shadow: var(--sh-1);
}
.split-figure img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.split-figure figcaption {
  position: absolute;
  inset: auto 0 0 0;
  z-index: 1;
  padding: 34px 18px 14px;
  background: linear-gradient(180deg, rgba(8, 14, 24, 0), rgba(8, 14, 24, .82));
  color: #fff;
  font-size: 12.5px;
  letter-spacing: .5px;
}

/* ---------- 通栏卡：一张卡里分三栏 ---------- */

.card--wide { margin: 0; }
.dcols {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px 26px;
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--hair);
}
.dcols p { margin: 0; }
.dcols b {
  display: block;
  margin-bottom: 7px;
  color: var(--gold);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 1.5px;
}

/* ---------- 表格：固定列宽 + 窄屏补列名 ---------- */

.dtable { table-layout: fixed; font-size: 15px; }
/* fixed 布局下列宽只认表头那一行 */
.dtable th[scope="col"]:nth-child(1) { width: 4.5em; text-align: center; }
.dtable th[scope="col"]:nth-child(2) { width: 31%; }
.dtable td, .dtable tbody th { padding-top: 12px; padding-bottom: 12px; }
.dtable .num {
  text-align: center;
  color: var(--gold);
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  letter-spacing: .6px;
}
.dtable th[scope=row] { letter-spacing: .2px; line-height: 1.6; }

/* ---------- 编号清单（实践飞行课目） ---------- */

.fllist { margin: 0; padding: 0; list-style: none; counter-reset: fl; }
.fllist li {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 13px 0;
  border-bottom: 1px dashed var(--hair);
  color: var(--ink);
  font-size: 15.5px;
  font-weight: 700;
}
.fllist li:last-child { border-bottom: 0; }
.fllist li::before {
  counter-increment: fl;
  content: counter(fl, decimal-leading-zero);
  flex: 0 0 auto;
  color: var(--gold);
  font-size: 12.5px;
  font-weight: 800;
  letter-spacing: 1px;
}
.fllist .form {
  flex: 0 0 auto;
  margin-left: auto;
  padding: 3px 12px;
  border-radius: 999px;
  background: var(--wash);
  color: var(--blue);
  font-size: 12.5px;
  font-weight: 800;
  letter-spacing: .8px;
}

/* ---------- 深色通栏里的横条 ---------- */

.dhero + section,
.band + section { border-top: 0; }
.strip--dark {
  margin: 0 0 20px;
  border-top: 0;
  background: rgba(255, 255, 255, .07);
  color: rgba(201, 212, 228, .86);
}
.strip--dark b { color: #fff; }
.band .note a { color: #9dc0f5; }
.band .card::before { display: none; }

/* ---------- 响应式 ---------- */

@media (max-width: 980px) {
  .split { grid-template-columns: 1fr; }
  .split--rev > .split-side { order: 0; }
  .klass { grid-template-columns: 1fr 1fr; }
  .klass > .head { grid-column: 1 / -1; }
}

@media (max-width: 720px) {
  .dhero > .wrap { padding-top: 54px; padding-bottom: 46px; }
  .dfacts { gap: 14px 0; margin-top: 30px; padding-top: 18px; border-top: 0; }
  .dfacts li {
    flex: 1 1 100%;
    min-width: 0;
    padding: 12px 0;
    border-right: 0;
    border-bottom: 1px solid rgba(201, 212, 228, .16);
  }
  .dfacts li:last-child { border-bottom: 0; }
  .dhero .lede { margin-top: 22px; font-size: 15px; }
  .klass { grid-template-columns: 1fr; gap: 14px; padding: 20px 18px; }
  .dcols { grid-template-columns: 1fr; gap: 16px; }
  .split-figure figcaption { padding: 24px 14px 11px; }
  /* site.css 在窄屏把表格摊成"一行一卡"，这里补回列名，否则读不出哪格是什么 */
  .dtable td {
    display: flex;
    align-items: baseline;
    gap: 12px;
  }
  .dtable td[data-label]::before {
    content: attr(data-label);
    flex: 0 0 5.5em;
    color: var(--gold);
    font-size: 11.5px;
    font-weight: 800;
    letter-spacing: 1.6px;
    padding-top: 3px;
  }
}

/* ---------- 内页换屏：把近乎看不见的渐变换成实色底 ---------- */

body:not(.home) main > section:nth-of-type(even):not(.band) {
  background: var(--wash);
}

/* ---------- 深色通栏里的证照卡：横条与分栏线换成半透明 ---------- */

.band .strip--dark { margin-bottom: 0; border-top: 1px solid rgba(201, 212, 228, .22); }
.band .dcols { border-top-color: rgba(201, 212, 228, .22); }
.band .dcols b { color: var(--star); }