/* ============================================================
   AI 企业训练营 · FDE Talent Program
   视觉：学院手册 / 印刷品
   ============================================================ */

:root {
  --paper: #FAF7F0;
  --paper-tint: #F4F0E6;
  --paper-deep: #EDE7D9;
  --ink: #17140F;
  --ink-soft: #2B2620;
  --muted: #6E6555;
  --muted-2: #938875;
  --rule: #DBD3C2;
  --rule-strong: #B7AC94;
  --accent: #9B3A26;

  --serif: "Source Han Serif SC", "Noto Serif CJK SC", "Songti SC", "STSong", "SimSun", Georgia, "Times New Roman", serif;
  --sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", -apple-system, "Segoe UI", Roboto, sans-serif;

  --maxw: 1140px;
  --gut: 40px;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink-soft);
  font-family: var(--serif);
  font-size: 16.5px;
  line-height: 1.95;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, h5 { margin: 0; color: var(--ink); font-weight: 600; }
p { margin: 0; }
a { color: inherit; text-decoration: none; }
ul, ol, dl, dd, dt { margin: 0; padding: 0; }
ul, ol { list-style: none; }
img, svg { display: block; max-width: 100%; }

.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--gut);
}

.kicker {
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--accent);
  line-height: 1.6;
}
.kicker.light { color: #C0A98C; }

/* ---------------- 顶部信息条 ---------------- */
.topline {
  background: var(--ink);
  color: #D9D2C2;
  font-family: var(--sans);
  font-size: 11.5px;
  letter-spacing: .12em;
}
.topline-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 32px;
}
.topline-right { color: #8E8471; }

/* ---------------- 页头 ---------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250, 247, 240, .94);
  backdrop-filter: saturate(150%) blur(8px);
  -webkit-backdrop-filter: saturate(150%) blur(8px);
  border-bottom: 1px solid var(--rule);
}
.header-inner {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 32px;
  padding-top: 16px;
  padding-bottom: 14px;
}
.brand { display: flex; flex-direction: column; gap: 2px; }
.brand-name {
  font-size: 19px;
  font-weight: 600;
  letter-spacing: .06em;
  color: var(--ink);
}
.brand-sub {
  font-family: var(--sans);
  font-size: 9.5px;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--muted-2);
}

.nav {
  display: flex;
  align-items: center;
  gap: 26px;
  padding-bottom: 3px;
}
.nav a {
  font-family: var(--sans);
  font-size: 13px;
  color: var(--muted);
  letter-spacing: .06em;
  position: relative;
  transition: color .18s ease;
}
.nav a:hover { color: var(--ink); }
.nav a::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -4px;
  height: 1px;
  background: var(--ink);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .22s ease;
}
.nav a:hover::after { transform: scaleX(1); }
.nav .nav-cta {
  color: var(--ink);
  border-bottom: 1px solid var(--ink);
  padding-bottom: 1px;
}
.nav .nav-cta::after { display: none; }

.nav-toggle {
  display: none;
  width: 40px; height: 34px;
  border: 1px solid var(--rule-strong);
  background: transparent;
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 0;
}
.nav-toggle span {
  display: block;
  width: 16px; height: 1px;
  background: var(--ink);
  transition: transform .2s ease, opacity .2s ease;
}
.nav-toggle.open span:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }

/* ---------------- 封面 ---------------- */
.cover {
  padding: 76px 0 0;
  border-bottom: 1px solid var(--rule);
}
.cover-grid {
  display: grid;
  grid-template-columns: 1.22fr .78fr;
  gap: 72px;
  align-items: start;
}
.cover-main .kicker { margin-bottom: 26px; }

.cover h1 {
  font-size: clamp(38px, 5.1vw, 66px);
  line-height: 1.26;
  letter-spacing: .01em;
  font-weight: 700;
}
.cover-lede {
  margin-top: 30px;
  max-width: 34em;
  font-size: 16.5px;
  line-height: 2;
  color: var(--muted);
}
.cover-actions {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-top: 40px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 48px;
  padding: 0 30px;
  font-family: var(--sans);
  font-size: 13.5px;
  letter-spacing: .1em;
  cursor: pointer;
  border: 1px solid transparent;
  background: none;
  transition: background .2s ease, color .2s ease, border-color .2s ease;
}
.btn-ink {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}
.btn-ink:hover { background: var(--accent); border-color: var(--accent); }
.btn-line {
  color: var(--ink);
  border-color: var(--rule-strong);
}
.btn-line:hover { border-color: var(--ink); background: var(--paper-tint); }

/* 目录 */
.toc { padding-top: 8px; }
.toc-title {
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--muted-2);
  padding-bottom: 12px;
  border-bottom: 1px solid var(--ink);
}
.toc-list li {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 10px 0;
  border-bottom: 1px solid var(--rule);
}
.toc-no {
  font-family: var(--sans);
  font-size: 10.5px;
  letter-spacing: .12em;
  color: var(--accent);
  width: 20px;
  flex: none;
}
.toc-list a {
  font-size: 15px;
  color: var(--ink-soft);
  transition: color .18s ease;
}
.toc-list a:hover { color: var(--accent); }
.toc-list .lead { display: none; }

/* 封面元信息 */
.meta-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--rule-strong);
  margin-top: 64px;
}
.meta-row > div {
  padding: 20px 26px 24px 0;
  border-right: 1px solid var(--rule);
}
.meta-row > div:last-child { border-right: 0; }
.meta-row > div + div { padding-left: 26px; }
.meta-row dt {
  font-family: var(--sans);
  font-size: 10.5px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--muted-2);
  margin-bottom: 6px;
}
.meta-row dd { font-size: 15px; color: var(--ink-soft); line-height: 1.7; }

/* ---------------- 章节通用 ---------------- */
.chapter {
  padding: 92px 0 96px;
  border-bottom: 1px solid var(--rule);
}
.chapter-tint { background: var(--paper-tint); }

.ch-head {
  display: grid;
  grid-template-columns: 92px 1fr;
  gap: 0;
  align-items: start;
  padding-bottom: 26px;
  border-bottom: 1px solid var(--ink);
  margin-bottom: 52px;
}
.ch-no {
  font-family: var(--sans);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--accent);
  padding-top: 2px;
}
.ch-title h2 {
  font-size: clamp(25px, 3vw, 38px);
  line-height: 1.5;
  letter-spacing: -.005em;
}
.ch-title .kicker { margin-bottom: 12px; }

.ch-body { }
.lead-p {
  max-width: 34em;
  font-size: 17px;
  line-height: 2;
  color: var(--ink-soft);
  margin-bottom: 52px;
}

/* 编号条目（细线分栏） */
.rule-list {
  display: grid;
  gap: 0;
  position: relative;
}
.rule-list.three { grid-template-columns: repeat(3, 1fr); }
.rule-list.two { grid-template-columns: repeat(2, 1fr); row-gap: 44px; }

/* 贯穿整块的分栏线 */
.rule-list.three::before,
.rule-list.three::after,
.rule-list.two::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  width: 1px;
  background: var(--rule);
}
.rule-list.three::before { left: 33.333%; }
.rule-list.three::after { left: 66.666%; }
.rule-list.two::before { left: 50%; }

.rule-list article {
  padding: 0 34px;
}
.rule-list article:first-child { padding-left: 0; }
.rule-list article:last-child { padding-right: 0; }

.rule-list .num {
  display: block;
  font-family: var(--sans);
  font-size: 10.5px;
  letter-spacing: .18em;
  color: var(--accent);
  margin-bottom: 14px;
}
.rule-list .num.cn {
  font-family: var(--serif);
  font-size: 16px;
  letter-spacing: .1em;
  line-height: 1;
}
.rule-list h3 {
  font-size: 18.5px;
  line-height: 1.6;
  letter-spacing: -.005em;
}
.rule-list p {
  margin-top: 10px;
  font-size: 14.5px;
  line-height: 1.95;
  color: var(--muted);
}
.rule-list .step-time {
  font-family: var(--sans);
  font-size: 11.5px;
  letter-spacing: .06em;
  color: var(--muted-2);
  margin-top: 8px;
}

/* 双栏 */
.two-col {
  display: grid;
  grid-template-columns: 1.08fr .92fr;
  gap: 84px;
  align-items: start;
}
.col-text p { font-size: 16px; line-height: 2.05; color: var(--ink-soft); }
.col-text p + p { margin-top: 20px; }

.col-text blockquote {
  margin: 34px 0 0;
  padding: 2px 0 2px 22px;
  border-left: 2px solid var(--accent);
  font-size: 19px;
  line-height: 1.85;
  color: var(--ink);
}

.side-label {
  font-family: var(--sans);
  font-size: 10.5px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--muted-2);
  padding-bottom: 12px;
  border-bottom: 1px solid var(--ink);
  margin-bottom: 4px;
}

.ability > div {
  display: flex;
  gap: 24px;
  padding: 15px 0;
  border-bottom: 1px solid var(--rule);
}
.ability dt {
  font-size: 15.5px;
  font-weight: 600;
  color: var(--ink);
  width: 92px;
  flex: none;
}
.ability dd { font-size: 14px; color: var(--muted); line-height: 1.85; }

/* ---------------- 课程表 ---------------- */
.table-wrap { overflow-x: auto; }
.schedule {
  width: 100%;
  border-collapse: collapse;
  min-width: 660px;
}
.schedule caption {
  caption-side: top;
  text-align: left;
  font-family: var(--sans);
  font-size: 11.5px;
  letter-spacing: .06em;
  color: var(--muted-2);
  padding-bottom: 14px;
}
.schedule th {
  font-family: var(--sans);
  font-size: 10.5px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 500;
  text-align: left;
  padding: 0 20px 12px 0;
  border-bottom: 1px solid var(--ink);
  white-space: nowrap;
}
.schedule td {
  padding: 22px 20px 22px 0;
  border-bottom: 1px solid var(--rule);
  vertical-align: top;
  font-size: 14.5px;
  line-height: 1.9;
  color: var(--ink-soft);
}
.schedule tbody tr:last-child td { border-bottom: 1px solid var(--rule-strong); }
.schedule .c-week {
  width: 104px;
  font-family: var(--sans);
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--accent);
  white-space: nowrap;
}
.schedule .c-stage {
  width: 132px;
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
}
.schedule .c-out {
  width: 150px;
  font-size: 13.5px;
  color: var(--muted);
  line-height: 1.8;
}
.schedule tbody tr { transition: background .18s ease; }
.schedule tbody tr:hover { background: rgba(23, 20, 15, .025); }

.table-note {
  margin-top: 22px;
  font-size: 13.5px;
  color: var(--muted);
  line-height: 1.9;
}

/* ---------------- 交付清单 ---------------- */
.deliver { counter-reset: d; }
.deliver li {
  counter-increment: d;
  display: grid;
  grid-template-columns: 42px 1fr;
  padding: 18px 0;
  border-bottom: 1px solid var(--rule);
}
.deliver li::before {
  content: counter(d, decimal-leading-zero);
  grid-column: 1;
  grid-row: 1 / span 2;
  font-family: var(--sans);
  font-size: 10.5px;
  letter-spacing: .14em;
  color: var(--accent);
  padding-top: 5px;
}
.deliver b {
  grid-column: 2;
  font-size: 16.5px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: -.005em;
}
.deliver span {
  grid-column: 2;
  display: block;
  margin-top: 5px;
  font-size: 14px;
  color: var(--muted);
  line-height: 1.9;
}

.slip {
  border: 1px solid var(--rule-strong);
  padding: 28px 26px 22px;
  background: var(--paper);
}
.slip-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--ink);
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ink);
}
.slip-head em { font-style: normal; color: var(--muted-2); }
.slip-list li {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 11px 0;
  border-bottom: 1px dotted var(--rule-strong);
  font-size: 14.5px;
}
.slip-list li i { flex: 1; }
.slip-list li em {
  font-style: normal;
  font-family: var(--sans);
  font-size: 11.5px;
  color: var(--muted);
  letter-spacing: .04em;
}
.slip-foot {
  margin-top: 16px;
  font-family: var(--sans);
  font-size: 11px;
  color: var(--muted-2);
  letter-spacing: .02em;
}

/* ---------------- 数据 ---------------- */
.figures {
  border-bottom: 1px solid var(--rule);
  background: var(--paper);
}
.figures-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  padding: 54px 0;
}
.figures-row > div {
  padding: 0 28px;
  border-left: 1px solid var(--rule);
}
.figures-row > div:first-child { border-left: 0; padding-left: 0; }
.figures-row dt b {
  font-size: clamp(34px, 3.6vw, 46px);
  font-weight: 600;
  letter-spacing: -.03em;
  line-height: 1.1;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}
.figures-row dd {
  margin-top: 8px;
  font-family: var(--sans);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--muted);
}

/* 适合人群 */
.audience {
  margin-top: 52px;
  padding-top: 22px;
  border-top: 1px solid var(--rule);
  font-size: 14.5px;
  line-height: 2;
  color: var(--muted);
}
.audience-label {
  font-family: var(--sans);
  font-size: 10.5px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-right: 16px;
  white-space: nowrap;
}

/* ---------------- 问答 ---------------- */
.faq { border-top: 0; }
.faq-item { border-bottom: 1px solid var(--rule); }
.faq-item summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: baseline;
  gap: 22px;
  padding: 22px 40px 22px 0;
  position: relative;
  font-size: 17.5px;
  color: var(--ink);
  line-height: 1.7;
  transition: color .18s ease;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary:hover { color: var(--accent); }
.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 4px;
  top: 50%;
  transform: translateY(-52%);
  font-family: var(--sans);
  font-size: 18px;
  font-weight: 300;
  color: var(--muted);
  transition: transform .2s ease;
}
.faq-item[open] summary::after { content: "−"; }
.q-no {
  font-family: var(--sans);
  font-size: 10.5px;
  letter-spacing: .14em;
  color: var(--accent);
  flex: none;
  width: 26px;
  padding-top: 4px;
}
.faq-body {
  padding: 0 15% 26px 48px;
  font-size: 15px;
  line-height: 2.05;
  color: var(--muted);
}

/* ---------------- 报名 ---------------- */
.apply {
  background: var(--ink);
  color: #E4DDCD;
  padding: 92px 0 96px;
}
.apply-grid {
  display: grid;
  grid-template-columns: .92fr 1.08fr;
  gap: 76px;
  align-items: start;
}
.apply h2 {
  color: var(--paper);
  font-size: clamp(26px, 3vw, 38px);
  line-height: 1.5;
  margin-top: 14px;
}
.apply-lede {
  margin-top: 24px;
  font-size: 15.5px;
  line-height: 2.05;
  color: #B7AE9A;
}
.apply-points {
  margin-top: 28px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.apply-points li {
  font-size: 14.5px;
  color: #CFC6B3;
  padding-left: 20px;
  position: relative;
}
.apply-points li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--accent);
}
.apply-contact {
  margin-top: 42px;
  padding-top: 24px;
  border-top: 1px solid #3A342A;
  display: flex;
  gap: 56px;
  flex-wrap: wrap;
}
.apply-contact dt {
  font-family: var(--sans);
  font-size: 10.5px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: #857A65;
  margin-bottom: 4px;
}
.apply-contact dd {
  font-size: 17px;
  color: var(--paper);
  letter-spacing: .02em;
}

/* 表单 */
.apply-form {
  background: var(--paper);
  color: var(--ink);
  padding: 36px 34px 30px;
  border: 1px solid #3A342A;
  display: flex;
  flex-direction: column;
  gap: 22px;
  position: relative;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 26px;
}
.form-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--ink);
  margin-bottom: -2px;
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ink);
}
.form-head em {
  font-style: normal;
  text-transform: none;
  letter-spacing: .04em;
  color: var(--muted-2);
}
.apply-form label { display: block; }
.apply-form .lb {
  display: flex;
  align-items: baseline;
  gap: 4px;
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--muted);
  margin-bottom: 4px;
}
.apply-form .lb i { font-style: normal; color: var(--accent); }

.apply-form input,
.apply-form select,
.apply-form textarea {
  width: 100%;
  font-family: var(--serif);
  font-size: 15.5px;
  color: var(--ink);
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--rule-strong);
  border-radius: 0;
  padding: 7px 0 9px;
  outline: none;
  transition: border-color .2s ease, background .2s ease;
}
.apply-form textarea { resize: vertical; line-height: 1.8; }
.apply-form input::placeholder,
.apply-form textarea::placeholder { color: #A99E8A; font-size: 15px; }
.apply-form select { color: var(--ink); }
.apply-form input:focus,
.apply-form select:focus,
.apply-form textarea:focus {
  border-bottom-color: var(--ink);
  background: rgba(23, 20, 15, .02);
}
.apply-form input.invalid,
.apply-form textarea.invalid {
  border-bottom-color: var(--accent);
  background: rgba(155, 58, 38, .05);
}
.apply-form select {
  appearance: none;
  -webkit-appearance: none;
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='7' viewBox='0 0 10 7'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%236E6555' stroke-width='1.2' fill='none'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 2px center;
  padding-right: 22px;
}
.apply-form .btn {
  margin-top: 6px;
  height: 52px;
  width: 100%;
  letter-spacing: .16em;
}
.apply-form .full { grid-column: 1 / -1; }
.form-note {
  font-family: var(--sans);
  font-size: 11px;
  color: var(--muted-2);
  line-height: 1.8;
  text-align: center;
  margin-top: -6px;
}

.form-success {
  position: absolute;
  inset: 0;
  background: var(--paper);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 40px;
  text-align: center;
  animation: fade .4s ease;
}
.form-success[hidden] { display: none; }
.fs-mark {
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: .3em;
  text-transform: uppercase;
  color: var(--accent);
}
.fs-text { font-size: 17px; color: var(--ink); line-height: 1.9; max-width: 20em; }

@keyframes fade {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* ---------------- 页脚 ---------------- */
.site-footer {
  background: var(--paper);
  padding: 56px 0 26px;
  border-top: 1px solid var(--rule-strong);
}
.footer-inner {
  display: grid;
  grid-template-columns: 1.5fr .92fr .92fr .92fr .92fr;
  gap: 40px;
}
.footer-name {
  font-size: 20px;
  font-weight: 600;
  letter-spacing: .06em;
  color: var(--ink);
}
.footer-desc {
  margin-top: 12px;
  font-size: 13.5px;
  line-height: 1.95;
  color: var(--muted);
}
.footer-col { display: flex; flex-direction: column; gap: 9px; }
.footer-col h5 {
  font-family: var(--sans);
  font-size: 10.5px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--muted-2);
  font-weight: 500;
  margin-bottom: 5px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--rule);
}
.footer-col a, .footer-col span {
  font-size: 13.5px;
  color: var(--muted);
  transition: color .18s ease;
}
.footer-col a:hover { color: var(--accent); }
.footer-bottom {
  margin-top: 46px;
  padding-top: 18px;
  border-top: 1px solid var(--rule);
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: .04em;
  color: var(--muted-2);
}

/* ---------------- 响应式 ---------------- */
@media (max-width: 1024px) {
  :root { --gut: 32px; }
  .cover-grid { grid-template-columns: 1fr; gap: 48px; }
  .toc { max-width: 460px; }
  .two-col { grid-template-columns: 1fr; gap: 48px; }
  .apply-grid { grid-template-columns: 1fr; gap: 48px; }
  .rule-list.three, .rule-list.two { grid-template-columns: 1fr; row-gap: 0; }
  .rule-list.three::before, .rule-list.three::after, .rule-list.two::before { display: none; }
  .rule-list article {
    padding: 26px 0;
    border-top: 1px solid var(--rule);
  }
  .rule-list article:first-child { border-top: 0; padding-top: 0; }
  .footer-inner { grid-template-columns: 1fr 1fr; gap: 34px; }
}

@media (max-width: 860px) {
  .nav {
    position: absolute;
    top: 100%; left: 0; right: 0;
    background: var(--paper);
    border-bottom: 1px solid var(--rule-strong);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 8px var(--gut) 20px;
    display: none;
  }
  .nav.open { display: flex; }
  .nav a {
    padding: 12px 0;
    width: 100%;
    border-bottom: 1px solid var(--rule);
    font-size: 14.5px;
  }
  .nav a::after { display: none; }
  .nav .nav-cta { border-bottom: 1px solid var(--rule); }
  .nav-toggle { display: flex; }
  .header-inner { align-items: center; }

  .chapter { padding: 64px 0 68px; }
  .cover { padding-top: 52px; }
  .ch-head { grid-template-columns: 1fr; gap: 14px; padding-bottom: 20px; margin-bottom: 36px; }
  .ch-no { padding-top: 0; }
  .lead-p { margin-bottom: 36px; font-size: 16px; }
  .meta-row { grid-template-columns: 1fr 1fr; margin-top: 48px; }
  .meta-row > div { border-right: 0; border-bottom: 1px solid var(--rule); padding: 16px 0; }
  .meta-row > div + div { padding-left: 0; }
  .meta-row > div:nth-child(odd) { padding-right: 18px; }
  .meta-row > div:nth-child(even) { padding-left: 18px; border-left: 1px solid var(--rule); }
  .figures-row { grid-template-columns: 1fr 1fr; gap: 34px 0; padding: 40px 0; }
  .figures-row > div { padding: 0 18px; }
  .figures-row > div:nth-child(odd) { padding-left: 0; border-left: 0; }
  .faq-body { padding: 0 0 24px 48px; }
  .apply-form { padding: 26px 22px 24px; }
  .form-row { grid-template-columns: 1fr; gap: 18px; }
  .footer-inner { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; gap: 6px; }
  .topline-inner { font-size: 10.5px; letter-spacing: .06em; }
  .topline-right { display: none; }
}

@media (max-width: 560px) {
  :root { --gut: 22px; }
  body { font-size: 16px; }
  .cover h1 { font-size: 34px; }
  .cover-actions { gap: 12px; }
  .cover-actions .btn { flex: 1; min-width: 130px; padding: 0 16px; }
  .faq-item summary { font-size: 16px; gap: 12px; padding-right: 28px; }
  .faq-body { padding-left: 0; }
  .deliver li { grid-template-columns: 34px 1fr; }
  .slip { padding: 22px 18px 18px; }
}

/* ============================================================
   品牌标识
   ============================================================ */
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--ink);
}
.brand-mark { flex: none; display: block; }
.brand-text { display: flex; flex-direction: column; gap: 1px; }
.brand-name {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: .12em;
  color: var(--ink);
  line-height: 1.3;
}
.brand-sub {
  font-family: var(--sans);
  font-size: 9px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--muted-2);
  line-height: 1.4;
}
.site-footer .brand-mark { color: var(--ink); }
.footer-brand-top { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }

/* ============================================================
   内页：面包屑、文章头、正文
   ============================================================ */
.page-head {
  padding: 56px 0 40px;
  border-bottom: 1px solid var(--ink);
}
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--sans);
  font-size: 11.5px;
  letter-spacing: .06em;
  color: var(--muted-2);
  margin-bottom: 30px;
}
.breadcrumb a { color: var(--muted); transition: color .18s ease; }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb span { color: var(--rule-strong); }
.breadcrumb .here { color: var(--ink); }

.page-head h1 {
  font-size: clamp(30px, 4vw, 48px);
  line-height: 1.38;
  letter-spacing: -.005em;
  max-width: 22em;
}
.page-lede {
  margin-top: 22px;
  max-width: 34em;
  font-size: 16.5px;
  line-height: 2;
  color: var(--muted);
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: 26px;
  font-family: var(--sans);
  font-size: 11.5px;
  letter-spacing: .08em;
  color: var(--muted);
}
.article-meta .cat { color: var(--accent); }

/* 文章正文 */
.article-body { padding: 56px 0 72px; }
.article-wrap { max-width: 720px; }
.prose { color: var(--ink-soft); }
.prose p {
  font-size: 16.5px;
  line-height: 2.1;
  margin: 0 0 1.35em;
}
.prose > p:first-child { font-size: 17.5px; color: var(--ink); }
.prose h2 {
  font-size: 24px;
  line-height: 1.6;
  margin: 2.4em 0 .85em;
  padding-top: 1.1em;
  border-top: 1px solid var(--rule);
}
.prose h3 {
  font-size: 18.5px;
  line-height: 1.65;
  margin: 1.9em 0 .6em;
}
.prose ul, .prose ol {
  margin: 0 0 1.4em 1.3em;
  padding: 0;
}
.prose ul { list-style: disc; }
.prose ol { list-style: decimal; }
.prose li {
  font-size: 16px;
  line-height: 2;
  margin-bottom: .45em;
  padding-left: .2em;
}
.prose li::marker { color: var(--rule-strong); }
.prose blockquote {
  margin: 1.9em 0;
  padding: 4px 0 4px 22px;
  border-left: 2px solid var(--accent);
  font-size: 18px;
  line-height: 1.95;
  color: var(--ink);
}
.prose strong { font-weight: 600; color: var(--ink); }
.prose em { font-style: normal; border-bottom: 1px solid var(--rule-strong); }
.prose code {
  font-family: Consolas, "SFMono-Regular", monospace;
  font-size: .88em;
  background: var(--paper-deep);
  padding: 2px 5px;
}
.prose pre {
  background: var(--ink);
  color: #E4DDCD;
  padding: 18px 20px;
  overflow-x: auto;
  margin: 1.6em 0;
  font-size: 13px;
  line-height: 1.8;
}
.prose pre code { background: none; padding: 0; color: inherit; font-size: inherit; }
.prose table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.8em 0;
  font-size: 14.5px;
}
.prose th {
  font-family: var(--sans);
  font-size: 10.5px;
  letter-spacing: .14em;
  text-transform: uppercase;
  font-weight: 500;
  color: var(--muted);
  text-align: left;
  padding: 0 16px 10px 0;
  border-bottom: 1px solid var(--ink);
  white-space: nowrap;
}
.prose td {
  padding: 14px 16px 14px 0;
  border-bottom: 1px solid var(--rule);
  vertical-align: top;
  line-height: 1.85;
}
.prose hr {
  border: 0;
  border-top: 1px solid var(--rule);
  margin: 2.6em 0;
}

/* 文章尾注 / 相关阅读 */
.article-foot {
  max-width: 720px;
  margin-top: 56px;
  padding-top: 30px;
  border-top: 1px solid var(--rule-strong);
}
.foot-label {
  font-family: var(--sans);
  font-size: 10.5px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--muted-2);
  margin-bottom: 18px;
}
.related { display: flex; flex-direction: column; }
.related a {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 16px;
  align-items: baseline;
  padding: 14px 0;
  border-bottom: 1px solid var(--rule);
  transition: color .18s ease;
}
.related a:hover { color: var(--accent); }
.related .t { font-size: 16px; color: inherit; }
.related .d { font-family: var(--sans); font-size: 11px; color: var(--muted-2); }

.cta {
  margin-top: 48px;
  border: 1px solid var(--rule-strong);
  padding: 30px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  flex-wrap: wrap;
}
.cta h3 { font-size: 19px; margin-bottom: 6px; }
.cta p { font-size: 14.5px; color: var(--muted); line-height: 1.8; }

/* ============================================================
   内容列表
   ============================================================ */
.post-list { border-top: 1px solid var(--rule); }
.post {
  display: grid;
  grid-template-columns: 92px 1fr 108px;
  gap: 26px;
  align-items: baseline;
  padding: 24px 0;
  border-bottom: 1px solid var(--rule);
  transition: background .18s ease;
}
.post:hover { background: rgba(23, 20, 15, .022); }
.post-date {
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--muted-2);
  white-space: nowrap;
}
.post h3 {
  font-size: 18px;
  line-height: 1.65;
  font-weight: 600;
  transition: color .18s ease;
}
.post:hover h3 { color: var(--accent); }
.post p {
  margin-top: 7px;
  font-size: 14px;
  line-height: 1.9;
  color: var(--muted);
  max-width: 46em;
}
.post-cat {
  font-family: var(--sans);
  font-size: 10.5px;
  letter-spacing: .14em;
  color: var(--accent);
  text-align: right;
  white-space: nowrap;
}
.more-link {
  display: inline-block;
  margin-top: 30px;
  font-family: var(--sans);
  font-size: 12.5px;
  letter-spacing: .1em;
  color: var(--ink);
  border-bottom: 1px solid var(--ink);
  padding-bottom: 3px;
  transition: color .18s ease, border-color .18s ease;
}
.more-link:hover { color: var(--accent); border-color: var(--accent); }

/* 服务线 */
.service-line {
  margin-top: 56px;
  padding-top: 28px;
  border-top: 1px solid var(--rule-strong);
}
.service-line .foot-label { margin-bottom: 20px; }
.service-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  position: relative;
}
.service-grid::before,
.service-grid::after {
  content: "";
  position: absolute;
  top: 0; bottom: 0;
  width: 1px;
  background: var(--rule);
}
.service-grid::before { left: 33.333%; }
.service-grid::after { left: 66.666%; }
.service-grid article { padding: 0 30px; }
.service-grid article:first-child { padding-left: 0; }
.service-grid article:last-child { padding-right: 0; }
.service-grid h4 {
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 8px;
}
.service-grid p {
  font-size: 14px;
  line-height: 1.9;
  color: var(--muted);
}

@media (max-width: 1024px) {
  .service-grid { grid-template-columns: 1fr; }
  .service-grid::before, .service-grid::after { display: none; }
  .service-grid article {
    padding: 18px 0;
    border-top: 1px solid var(--rule);
  }
  .service-grid article:first-child { border-top: 0; padding-top: 0; }
}

@media (max-width: 860px) {
  .post { grid-template-columns: 1fr; gap: 6px; }
  .post-cat { text-align: left; }
  .page-head { padding: 40px 0 28px; }
  .article-body { padding: 36px 0 56px; }
  .prose table { font-size: 13.5px; }
  .cta { padding: 24px; }
}

/* 内容列表分组标题 */
.group-title {
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--muted-2);
  font-weight: 500;
  margin: 54px 0 0;
  padding-bottom: 12px;
}
.group-title:first-of-type { margin-top: 0; }
.lede-note {
  font-size: 13.5px !important;
  line-height: 1.9 !important;
  color: var(--muted) !important;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--rule);
}

/* 修正：品牌区横排（覆盖早期竖排定义） */
.brand {
  flex-direction: row;
  align-items: center;
  gap: 12px;
}
.header-inner { align-items: center; }

/* 封面配图 */
.hero-figure {
  margin: 54px 0 0;
}
.hero-figure img {
  display: block;
  width: 100%;
  height: auto;
  border-top: 1px solid var(--rule-strong);
  border-bottom: 1px solid var(--rule-strong);
}
.hero-figure figcaption {
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: .06em;
  line-height: 1.8;
  color: var(--muted-2);
  padding-top: 10px;
}
.meta-row { margin-top: 34px; }

@media (max-width: 860px) {
  .hero-figure { margin-top: 34px; }
  .hero-figure img {
    height: 210px;
    object-fit: cover;
    object-position: 32% 38%;
  }
}

/* ================================================================
   多页文档：章节内页组件
   ================================================================ */

/* 正文容器：比文章页宽一点，容得下表格 */
.doc-body { padding: 58px 0 0; }
.doc-wrap { max-width: 880px; }
.doc-sec + .doc-sec { margin-top: 64px; }
.doc-sec > h2 {
  font-size: 25px;
  line-height: 1.55;
  margin: 0 0 22px;
  padding: 0 0 16px;
  border-top: 0;
  border-bottom: 1px solid var(--rule);
}
.doc-sec > h2 .h2-no {
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--accent);
  display: block;
  margin-bottom: 10px;
  font-weight: 500;
}
.doc-sec > .sec-lede {
  font-size: 16.5px;
  line-height: 2.05;
  color: var(--ink-soft);
  margin: -4px 0 30px;
  max-width: 42em;
}

/* 提示条 */
.note {
  border-left: 2px solid var(--accent);
  padding: 2px 0 2px 20px;
  margin: 30px 0;
  font-size: 14px;
  line-height: 1.95;
  color: var(--muted);
}
.note b { color: var(--ink); font-weight: 600; }

/* 键值信息表 */
.kv { border-top: 1px solid var(--ink); }
.kv > div {
  display: grid;
  grid-template-columns: 148px 1fr;
  gap: 24px;
  padding: 16px 0;
  border-bottom: 1px solid var(--rule);
}
.kv dt {
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--muted-2);
  padding-top: 4px;
}
.kv dd { font-size: 15.5px; color: var(--ink); line-height: 1.8; }
.kv dd em { font-style: normal; color: var(--muted); font-size: 13.5px; display: block; margin-top: 4px; line-height: 1.8; }

/* 四阶段总览 */
.stage-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--rule-strong);
}
.stage-grid > div { padding: 26px 24px 30px; border-left: 1px solid var(--rule); }
.stage-grid > div:first-child { border-left: 0; padding-left: 0; }
.stage-grid > div:last-child { padding-right: 0; }
.stage-grid .s-no {
  font-family: var(--sans);
  font-size: 10.5px;
  letter-spacing: .18em;
  color: var(--accent);
}
.stage-grid h3 { font-size: 17px; margin: 11px 0 9px; }
.stage-grid p { font-size: 13.5px; line-height: 1.85; color: var(--muted); }

/* 每周条目 */
.weeks { border-top: 1px solid var(--ink); }
.week {
  display: grid;
  grid-template-columns: 92px 1fr;
  gap: 0 40px;
  padding: 30px 0 32px;
  border-bottom: 1px solid var(--rule);
}
.week-no {
  font-family: var(--sans);
  font-size: 10.5px;
  letter-spacing: .16em;
  color: var(--accent);
  text-transform: uppercase;
}
.week-no b {
  display: block;
  font-family: var(--serif);
  font-size: 30px;
  font-weight: 600;
  letter-spacing: 0;
  color: var(--ink);
  line-height: 1.2;
  margin-top: 4px;
}
.week h3 { font-size: 19px; line-height: 1.6; margin-bottom: 16px; }
.week dl { display: grid; gap: 9px; }
.week dl > div { display: grid; grid-template-columns: 60px 1fr; gap: 18px; }
.week dt {
  font-family: var(--sans);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--muted-2);
  padding-top: 4px;
}
.week dd { font-size: 14.5px; line-height: 1.95; color: var(--ink-soft); }

/* 案例条目 */
.cases { border-top: 1px solid var(--ink); }
.case {
  display: grid;
  grid-template-columns: 210px 1fr;
  gap: 0 46px;
  padding: 34px 0 36px;
  border-bottom: 1px solid var(--rule);
}
.case-ind {
  font-family: var(--sans);
  font-size: 10.5px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 9px;
}
.case-side h3 { font-size: 18px; line-height: 1.6; }
.case-meta {
  font-family: var(--sans);
  font-size: 11.5px;
  color: var(--muted-2);
  margin-top: 12px;
  letter-spacing: .04em;
  line-height: 1.9;
}
.case-body p { font-size: 14.8px; line-height: 1.95; color: var(--ink-soft); }
.case-body p + p { margin-top: 11px; }
.case-body .c-k {
  font-family: var(--sans);
  font-size: 10.5px;
  letter-spacing: .12em;
  color: var(--muted-2);
  display: inline-block;
  min-width: 3.4em;
}
.case-result {
  margin-top: 16px;
  padding-top: 13px;
  border-top: 1px solid var(--rule);
  font-size: 14px;
  color: var(--ink);
  line-height: 1.85;
}

/* 标签行 */
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 4px 0 22px; }
.chips span {
  font-family: var(--sans);
  font-size: 12px;
  color: var(--ink-soft);
  border: 1px solid var(--rule-strong);
  padding: 6px 12px;
  line-height: 1;
}

/* 章节分页器 */
.pager {
  display: flex;
  justify-content: space-between;
  gap: 28px;
  border-top: 1px solid var(--rule-strong);
  margin-top: 20px;
}
.pager a {
  padding: 26px 0 4px;
  display: flex;
  flex-direction: column;
  gap: 9px;
  max-width: 48%;
  transition: color .18s ease;
}
.pager a:hover { color: var(--accent); }
.pager .p-label {
  font-family: var(--sans);
  font-size: 10.5px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--muted-2);
}
.pager .p-title { font-size: 18px; line-height: 1.5; }
.pager .p-next { margin-left: auto; text-align: right; align-items: flex-end; }
.pager-tail { padding: 0 0 76px; }

/* 团队角色 */
.roles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border-top: 1px solid var(--ink); }
.roles > div { padding: 24px 26px 28px; border-left: 1px solid var(--rule); border-bottom: 1px solid var(--rule); }
.roles > div:nth-child(3n+1) { border-left: 0; padding-left: 0; }
.roles > div:nth-child(3n) { padding-right: 0; }
.roles h3 { font-size: 16.5px; margin-bottom: 10px; }
.roles p { font-size: 13.5px; line-height: 1.9; color: var(--muted); }

/* 步骤流（5 步以内，横向） */
.steps { display: grid; grid-template-columns: repeat(5, 1fr); border-top: 1px solid var(--ink); }
.steps > div { padding: 22px 20px 26px; border-left: 1px solid var(--rule); }
.steps > div:first-child { border-left: 0; padding-left: 0; }
.steps > div:last-child { padding-right: 0; }
.steps .s-no {
  font-family: var(--sans);
  font-size: 10.5px;
  letter-spacing: .16em;
  color: var(--accent);
  display: block;
  margin-bottom: 10px;
}
.steps h3 { font-size: 15.5px; margin-bottom: 8px; }
.steps p { font-size: 13px; line-height: 1.85; color: var(--muted); }

/* 禁用清单 */
.dont li {
  font-size: 15px;
  line-height: 2;
  color: var(--ink-soft);
  padding-left: 22px;
  position: relative;
}
.dont li + li { margin-top: 6px; }
.dont li::before {
  content: "×";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-family: var(--sans);
  font-size: 13px;
  top: 3px;
}

@media (max-width: 1024px) {
  .stage-grid { grid-template-columns: 1fr 1fr; }
  .stage-grid > div { border-left: 1px solid var(--rule); padding: 24px 22px; }
  .stage-grid > div:nth-child(odd) { border-left: 0; padding-left: 0; }
  .stage-grid > div:nth-child(-n+2) { border-bottom: 1px solid var(--rule); }
  .steps { grid-template-columns: 1fr; }
  .steps > div { border-left: 0; padding: 20px 0; border-bottom: 1px solid var(--rule); }
  .steps > div:first-child { padding-top: 0; }
  .steps > div:last-child { border-bottom: 0; }
  .roles { grid-template-columns: 1fr 1fr; }
  .roles > div:nth-child(3n+1) { border-left: 1px solid var(--rule); padding-left: 26px; }
  .roles > div:nth-child(odd) { border-left: 0; padding-left: 0; }
  .case { grid-template-columns: 1fr; gap: 16px; }
  .week { grid-template-columns: 68px 1fr; gap: 0 26px; }
  .kv > div { grid-template-columns: 120px 1fr; gap: 18px; }
}

@media (max-width: 860px) {
  .doc-body { padding-top: 40px; }
  .doc-sec + .doc-sec { margin-top: 48px; }
  .doc-sec > h2 { font-size: 21px; }
  .week { grid-template-columns: 1fr; gap: 10px; }
  .week-no b { display: inline; font-size: 22px; margin: 0 8px 0 0; }
  .week-no { display: flex; align-items: baseline; }
  .roles { grid-template-columns: 1fr; }
  .roles > div { border-left: 0; padding-left: 0; }
  .kv > div { grid-template-columns: 1fr; gap: 6px; }
  .kv dt { padding-top: 0; }
  .pager a { max-width: 100%; }
  .pager { gap: 0; }
  .pager .p-next { display: none; }
  .doc-wrap { max-width: none; }
}

/* 内页里的表单：不继承 prose 的行宽与行高 */
.apply-inline { margin-top: 28px; max-width: 720px; }
.apply-inline .apply-form { border: 1px solid var(--rule-strong); }
.apply-inline .form-note { font-size: 12px; line-height: 1.8; color: var(--muted-2); margin-top: 14px; }
.prose .apply-inline p { margin: 0; font-size: inherit; }
.prose .apply-inline .form-success p { font-size: inherit; }

/* 导航当前页 */
.nav a.on { color: var(--ink); }
.nav a.on::after { transform: scaleX(1); }

/* 内页里的 service-grid 与相关阅读 */
.prose .service-grid { margin-top: 4px; }
.prose .related a { padding: 15px 0; }

/* 内页 720/880 容器下的段落行高微调 */
.doc-wrap .doc-sec > p { font-size: 16.5px; line-height: 2.05; }
.doc-wrap .doc-sec > p + p { margin-top: 18px; }

/* 深色区里的下划线链接 */
.more-link.light { color: #E4DDCD; border-bottom-color: #6E6555; margin-top: 34px; }
.more-link.light:hover { color: #FFF7E8; border-bottom-color: var(--accent); }

/* 首页案例列表：第三列放结果标签，不用分类样式 */
.post-cat.case-tag { color: var(--accent); }

/* 两阶段总览（两周课程用） */
.stage-grid.two { grid-template-columns: 1fr 1fr; }
.stage-grid.two > div { padding: 30px 40px 34px; }
.stage-grid.two > div:first-child { padding-left: 0; }
.stage-grid.two > div:last-child { padding-right: 0; }
.stage-grid.two h3 { font-size: 20px; margin: 12px 0 10px; }
.stage-grid.two p { font-size: 14px; line-height: 1.95; }

@media (max-width: 860px) {
  .stage-grid.two { grid-template-columns: 1fr; }
  .stage-grid.two > div { padding: 22px 0 24px; border-left: 0; }
  .stage-grid.two > div + div { border-top: 1px solid var(--rule); }
}

/* 报名区价格条 */
.apply-price {
  margin-top: 34px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-top: 1px solid rgba(228, 221, 205, .22);
  border-bottom: 1px solid rgba(228, 221, 205, .22);
}
.apply-price > div { padding: 18px 0; }
.apply-price > div + div { padding-left: 28px; border-left: 1px solid rgba(228, 221, 205, .22); }
.apply-price dt {
  font-family: var(--sans);
  font-size: 10.5px;
  letter-spacing: .16em;
  color: #8E8471;
  margin-bottom: 9px;
}
.apply-price dd {
  font-family: var(--serif);
  font-size: 22px;
  line-height: 1.3;
  color: var(--paper);
  letter-spacing: .01em;
}

@media (max-width: 560px) {
  .apply-price { grid-template-columns: 1fr; }
  .apply-price > div + div { padding-left: 0; border-left: 0; border-top: 1px solid rgba(228, 221, 205, .22); }
}

/* 锚点定位避开吸顶导航（原生 hash 跳转也生效） */
section[id], .doc-sec[id], .chapter[id], [id^="pricing"], [id="apply"], [id="faq"] {
  scroll-margin-top: 92px;
}

/* 窄屏表格：左右可滑动，两端给出渐隐阴影提示，避免看起来像被裁切 */
@media (max-width: 900px) {
  .table-wrap {
    background:
      linear-gradient(to right, var(--paper) 40%, rgba(250, 247, 240, 0)) left center,
      linear-gradient(to left, var(--paper) 40%, rgba(250, 247, 240, 0)) right center,
      radial-gradient(farthest-side at 0 50%, rgba(23, 20, 15, .13), rgba(23, 20, 15, 0)) left center,
      radial-gradient(farthest-side at 100% 50%, rgba(23, 20, 15, .13), rgba(23, 20, 15, 0)) right center;
    background-repeat: no-repeat;
    background-size: 44px 100%, 44px 100%, 13px 100%, 13px 100%;
    background-attachment: local, local, scroll, scroll;
  }
}