/* ==========================================================================
   SMT 设备档案 —— 科技蓝 / 产品展示型常规企业站
   白底为主、蓝色主调，卡片化产品展示；圆角与阴影克制，避免强视觉刺激。
   正文对比度 > 7:1，标题近墨蓝，主蓝用于强调与交互。
   ========================================================================== */

:root {
  /* 底色 */
  --bg: #ffffff;
  --bg-soft: #f5f8fd;
  --bg-soft-2: #eef4fc;

  /* 描边 */
  --line: #e3eaf5;
  --line-2: #cfdcee;

  /* 文字 */
  --tx: #0d2137;
  --tx-2: #465a72;
  --tx-3: #7d8ea6;

  /* 主色 */
  --acc: #1266e3;
  --acc-d: #0b4db3;
  --acc-l: #e9f1fe;
  --acc-line: #b7d2f6;

  /* 提示色 */
  --mark: #b45309;
  --mark-soft: #fff8ec;
  --mark-line: #f2d7ab;

  /* 阴影 */
  --sh-1: 0 1px 2px rgba(13, 33, 55, 0.05);
  --sh-2: 0 10px 26px -16px rgba(13, 33, 55, 0.22);
  --sh-3: 0 16px 34px -18px rgba(18, 102, 227, 0.3);

  /* 字体 */
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", Consolas, "Liberation Mono", monospace;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "HarmonyOS Sans SC", "Microsoft YaHei", system-ui, sans-serif;

  --r: 10px;
  --r-sm: 6px;
  --w: 1180px;
  --w-n: 780px;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--tx-2);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.78;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

::selection { background: rgba(18, 102, 227, 0.16); color: var(--tx); }

img { max-width: 100%; height: auto; display: block; }
a { color: var(--acc); text-decoration: none; transition: color 0.16s; }
a:hover { color: var(--acc-d); }
h1, h2, h3 {
  margin: 0;
  line-height: 1.3;
  font-weight: 700;
  letter-spacing: -0.015em;
  color: var(--tx);
}
p { margin: 0; }
ul, ol, dl, dd { margin: 0; padding: 0; }
li { list-style: none; }

.wrap { width: 100%; max-width: var(--w); margin: 0 auto; padding: 0 28px; }
.page { padding: 34px 28px 90px; }
.narrow { max-width: var(--w-n); }

.skip {
  position: absolute; left: -9999px; top: 0; z-index: 99;
  background: var(--acc); color: #fff; padding: 10px 16px; border-radius: 0 0 6px 0;
}
.skip:focus { left: 0; top: 0; }

/* ── 顶部通告条 ── */
.topstrip {
  background: #0f2c53;
  color: #cfdcee;
  font-size: 12.5px;
  letter-spacing: 0.01em;
  text-align: center;
  padding: 8px 18px;
}

/* ── 页头 ── */
.hdr {
  position: sticky;
  top: 0;
  z-index: 40;
  background: #fff;
  border-bottom: 1px solid var(--line);
  box-shadow: 0 1px 3px rgba(13, 33, 55, 0.04);
}
.hdr-in {
  display: flex;
  align-items: center;
  gap: 28px;
  height: 72px;
}
.brand { display: flex; align-items: center; gap: 11px; color: var(--tx); }
.brand:hover { color: var(--tx); text-decoration: none; }
.brand-mark {
  width: 38px; height: 38px;
  display: grid; place-items: center;
  background: linear-gradient(150deg, #2a86f0, var(--acc) 60%, var(--acc-d));
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  border-radius: 8px;
  box-shadow: 0 4px 12px -4px rgba(18, 102, 227, 0.5);
}
.brand-txt { display: flex; flex-direction: column; line-height: 1.3; }
.brand-txt b { font-size: 16px; color: var(--tx); letter-spacing: 0; }
.brand-txt small {
  font-size: 10.5px;
  color: var(--tx-3);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.nav { margin-left: auto; display: flex; gap: 2px; }
.nav a {
  color: var(--tx-2);
  font-size: 15px;
  padding: 8px 14px;
  border-radius: 6px;
  white-space: nowrap;
  transition: color 0.16s, background 0.16s;
}
.nav a:hover { background: var(--bg-soft); color: var(--acc); text-decoration: none; }
.nav a.on { color: var(--acc); background: var(--acc-l); font-weight: 600; }

.nav-tg {
  display: none;
  margin-left: auto;
  width: 40px; height: 40px;
  border: 1px solid var(--line-2);
  background: #fff;
  border-radius: 6px;
  cursor: pointer;
  padding: 11px 9px;
  flex-direction: column;
  justify-content: space-between;
}
.nav-tg span { display: block; height: 1.5px; background: var(--tx); border-radius: 2px; }

/* ── 首页 banner ── */
.hero {
  position: relative;
  padding: 78px 0 72px;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(820px 420px at 88% 4%, rgba(18, 102, 227, 0.1), transparent 70%),
    linear-gradient(180deg, #f2f7ff 0%, #ffffff 86%);
}
.hero-in {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
  gap: 56px;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--acc);
  margin-bottom: 18px;
  padding: 5px 13px 5px 11px;
  background: #fff;
  border: 1px solid var(--acc-line);
  border-radius: 100px;
}
.eyebrow::before {
  content: "";
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--acc);
  flex: none;
}
.hero h1 {
  font-size: clamp(29px, 3.6vw, 43px);
  letter-spacing: -0.03em;
  line-height: 1.24;
  max-width: 15em;
  text-wrap: balance;
}
.hero h1 em {
  font-style: normal;
  color: var(--acc);
}
.lead {
  margin-top: 18px;
  font-size: 16.5px;
  line-height: 1.82;
  color: var(--tx-2);
  max-width: 40em;
}

.hero-acts { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin-top: 36px;
  max-width: 540px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r);
  box-shadow: var(--sh-1);
  overflow: hidden;
}
.stat {
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 1px;
}
.stat + .stat { border-left: 1px solid var(--line); }
.stat b {
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  color: var(--acc);
  line-height: 1.2;
}
.stat span { font-size: 12px; color: var(--tx-3); letter-spacing: 0.01em; }

/* banner 右侧：产品图 + 参数卡 */
.hero-vis {
  position: relative;
  display: flex;
  flex-direction: column;
}
.hero-vis-card {
  border-radius: 12px;
  overflow: hidden;
  background: #fff;
  border: 1px solid #e0e9f6;
  box-shadow: 0 22px 48px -26px rgba(13, 50, 110, 0.35);
}
.hero-vis-card img {
  width: 100%;
  height: auto;
  display: block;
}
.hero-vis-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-top: 14px;
  padding: 13px 18px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r);
  box-shadow: var(--sh-1);
}
.hvm-l { display: flex; flex-direction: column; gap: 1px; min-width: 0; }
.hvm-l b {
  font-size: 16px;
  color: var(--tx);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0;
}
.hvm-l span { font-size: 12.5px; color: var(--tx-3); }
.hvm-r { display: flex; gap: 26px; }
.hvm-r div { display: flex; flex-direction: column; gap: 1px; }
.hvm-r b {
  font-size: 16.5px;
  color: var(--acc);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
  line-height: 1.3;
}
.hvm-r b i { font-style: normal; font-size: 10.5px; color: var(--tx-3); margin-left: 1px; }
.hvm-r span { font-size: 11px; color: var(--tx-3); }
.hero-vis-link {
  align-self: flex-end;
  margin-top: 12px;
  font-size: 13.5px;
  color: var(--acc);
}
.hero-vis-link em { font-style: normal; transition: transform 0.16s; display: inline-block; }
.hero-vis-link:hover em { transform: translateX(3px); }

/* ── 区块 ── */
.sec { padding: 66px 0 0; }
.sec-head { margin-bottom: 26px; }
.h2 {
  position: relative;
  font-size: clamp(21px, 2.3vw, 25px);
  letter-spacing: -0.02em;
  margin-bottom: 26px;
}
.sec-head .h2 { margin-bottom: 10px; }
.sec-head p { color: var(--tx-2); font-size: 15px; max-width: 60em; }

/* 浅灰通栏：给长页面做节奏分区 */
.tint {
  background: var(--bg-soft);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 54px 0 62px;
  margin-top: 66px;
}
.tint .sec { padding-top: 0; }
.tint .sec + .sec { padding-top: 50px; }
.tint .rows { background: #fff; }

/* ── 三入口 ── */
.entry3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.entry {
  position: relative;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r);
  padding: 24px 22px 20px;
  display: flex;
  flex-direction: column;
  gap: 9px;
  color: var(--tx-2);
  transition: border-color 0.18s, box-shadow 0.18s, transform 0.18s;
}
.entry:hover {
  text-decoration: none;
  transform: translateY(-2px);
  border-color: var(--acc-line);
  box-shadow: var(--sh-3);
}
.entry b { font-size: 16.5px; color: var(--tx); }
.entry p { font-size: 14px; color: var(--tx-2); flex: 1; line-height: 1.72; }
.entry span {
  font-size: 13px;
  color: var(--acc);
  font-weight: 500;
}

/* ── 首页产品展示（四条产品线） ── */
.mshow {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  padding: 20px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: 12px;
}
.mshow .mcard { background: #fff; }
.mshow .mcard-b { padding: 15px 16px 18px; gap: 4px; }
.mshow .mcard h3 { font-size: 17px; }
.mshow .mcard-n { font-size: 12.5px; }
.mshow .mcard-nums { margin-top: 10px; padding-top: 10px; gap: 14px; flex-wrap: wrap; }
.mshow .mcard-nums b { font-size: 15px; }
.mshow .mcard-fam { font-size: 11px; }

/* ── 机型索引 ── */
.idx { columns: 2; column-gap: 20px; }
.idx-group { break-inside: avoid; margin-bottom: 20px; }
.idx-group {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r);
  overflow: hidden;
}
.idx-group h3 {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0;
  color: var(--tx);
  padding: 12px 18px;
  background: var(--bg-soft);
  border-bottom: 1px solid var(--line);
}
.idx-group h3 span {
  font-size: 12px;
  color: var(--acc);
  padding: 0 7px;
  border-radius: 4px;
  background: var(--acc-l);
  font-weight: 500;
}
.idx-group ul { padding: 6px 18px; }
.idx-group li { border-bottom: 1px solid #eef3fa; }
.idx-group li:last-child { border-bottom: none; }
.idx-group a {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 11px 2px;
  color: var(--tx-2);
  transition: color 0.16s, padding 0.16s;
}
.idx-group a:hover { color: var(--acc); text-decoration: none; padding-left: 6px; }
.idx-group a b {
  font-size: 14.5px;
  color: var(--tx);
  min-width: 94px;
  font-variant-numeric: tabular-nums;
}
.idx-group a:hover b { color: var(--acc); }
.idx-group a span { font-size: 14px; color: var(--tx-2); flex: 1; }

.tag-stop {
  font-style: normal;
  font-size: 11px;
  background: var(--mark-soft);
  color: var(--mark);
  border: 1px solid var(--mark-line);
  padding: 1px 7px;
  border-radius: 4px;
  letter-spacing: 0.01em;
  white-space: nowrap;
}
.tag-stop.sm { font-size: 10.5px; margin-left: 6px; vertical-align: 1px; }

/* ── 列表行 ── */
.rows {
  border: 1px solid var(--line);
  border-radius: var(--r);
  overflow: hidden;
  background: #fff;
}
.row {
  display: grid;
  grid-template-columns: 148px 1fr 108px;
  gap: 20px;
  align-items: baseline;
  padding: 15px 22px;
  border-bottom: 1px solid #eef3fa;
  color: var(--tx-2);
  transition: background 0.14s;
}
.row:last-child { border-bottom: none; }
.row:hover { background: var(--bg-soft); text-decoration: none; color: var(--tx); }
.row-k { font-size: 12.5px; color: var(--acc); letter-spacing: 0; }
.row-t { font-size: 15.5px; color: var(--tx); }
.row-m { font-size: 12.5px; color: var(--tx-3); text-align: right; }

.more { margin-top: 18px; font-size: 14px; }
.more a { color: var(--acc); }

/* ── CTA 横幅 ── */
.band {
  margin-top: 80px;
  padding: 58px 0;
  background: linear-gradient(115deg, #0e3a7d 0%, var(--acc) 58%, #2f8bf2 100%);
}
.band .wrap { position: relative; z-index: 1; }
.band h2 {
  font-size: clamp(22px, 2.6vw, 29px);
  color: #fff;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}
.band p { color: rgba(255, 255, 255, 0.84); max-width: 44em; font-size: 15.5px; }
.band .btn {
  margin-top: 26px;
  background: #fff;
  color: var(--acc-d);
  box-shadow: 0 10px 24px -14px rgba(0, 0, 0, 0.5);
}
.band .btn:hover { background: #f4f8ff; color: var(--acc-d); }

/* ── 按钮 ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--acc);
  color: #fff;
  border: 1px solid var(--acc);
  padding: 11px 22px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--r-sm);
  cursor: pointer;
  font-family: inherit;
  letter-spacing: 0;
  box-shadow: 0 6px 16px -10px rgba(18, 102, 227, 0.6);
  transition: background 0.16s, border-color 0.16s, box-shadow 0.18s, transform 0.16s;
}
.btn:hover {
  background: var(--acc-d);
  border-color: var(--acc-d);
  color: #fff;
  text-decoration: none;
  transform: translateY(-1px);
  box-shadow: 0 10px 22px -12px rgba(11, 77, 179, 0.65);
}
.btn.ghost {
  background: #fff;
  border-color: var(--line-2);
  color: var(--tx);
  box-shadow: none;
}
.btn.ghost:hover {
  background: var(--acc-l);
  border-color: var(--acc-line);
  color: var(--acc-d);
  box-shadow: none;
}
.btn.sm { padding: 9px 14px; font-size: 13.5px; width: 100%; }

/* ── 面包屑 ── */
.crumb {
  max-width: var(--w);
  margin: 0 auto;
  padding: 18px 28px 0;
  font-size: 13px;
  color: var(--tx-3);
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
}
.crumb a { color: var(--tx-3); }
.crumb a:hover { color: var(--acc); }
.crumb i { color: #c3cfdf; font-style: normal; }
.crumb span { color: var(--tx-2); }

/* ── 页头 ── */
.page-head { padding-bottom: 26px; margin-bottom: 34px; border-bottom: 1px solid var(--line); }
.page-head h1 {
  font-size: clamp(25px, 3.1vw, 34px);
  letter-spacing: -0.025em;
  text-wrap: balance;
}
.page-head.art h1 {
  font-size: clamp(23px, 2.8vw, 31px);
  max-width: 26em;
  line-height: 1.4;
  text-wrap: balance;
}
.page-head .lead { margin-top: 14px; font-size: 16px; }
.page-head.art .lead { color: var(--tx-2); font-size: 16.5px; }

/* ── 提示框 ── */
.note-box {
  margin-top: 32px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-left: 3px solid var(--acc);
  border-radius: var(--r-sm);
  padding: 18px 22px;
}
.note-box b { display: block; font-size: 15px; margin-bottom: 6px; color: var(--tx); }
.note-box p { font-size: 14.5px; color: var(--tx-2); }

.src { margin-top: 12px; font-size: 12.5px; color: var(--tx-3); }

/* ── 机型卡片 ── */
.mcards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.mcard {
  position: relative;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r);
  display: flex;
  flex-direction: column;
  color: var(--tx-2);
  overflow: hidden;
  transition: border-color 0.18s, transform 0.2s, box-shadow 0.2s;
}
.mcard:hover {
  text-decoration: none;
  color: var(--tx-2);
  transform: translateY(-3px);
  border-color: var(--acc-line);
  box-shadow: var(--sh-3);
}

.mcard-img {
  position: relative;
  aspect-ratio: 4 / 3;
  display: grid;
  place-items: center;
  padding: 14px;
  overflow: hidden;
  background: linear-gradient(180deg, #fdfefe 0%, #f5f8fc 100%);
  border-bottom: 1px solid #edf2f9;
}
.mcard-img img {
  width: 100%; height: 100%;
  object-fit: contain;
  mix-blend-mode: multiply;
  transition: transform 0.3s ease;
}
.mcard:hover .mcard-img img { transform: scale(1.03); }
.mcard.is-stop .mcard-img img { filter: saturate(0.7); opacity: 0.9; }

.mcard-b { padding: 18px 20px 20px; display: flex; flex-direction: column; gap: 5px; flex: 1; }
.mcard-top { display: flex; align-items: center; gap: 8px; margin-bottom: 2px; }
.mcard-fam {
  font-size: 11.5px;
  letter-spacing: 0;
  color: var(--tx-3);
}
.mcard h3 {
  font-size: 20px;
  letter-spacing: 0;
  color: var(--tx);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
}
.mcard-n { font-size: 13.5px; color: var(--tx-2); }
.mcard-p { font-size: 13px; color: var(--tx-3); line-height: 1.68; flex: 1; }
.mcard-nums {
  display: flex;
  gap: 20px;
  margin-top: 8px;
  padding-top: 12px;
  border-top: 1px solid #eef3fa;
}
.mcard-nums span { display: flex; align-items: baseline; gap: 3px; }
.mcard-nums b {
  font-size: 16.5px;
  color: var(--acc);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
}
.mcard-nums i { font-style: normal; font-size: 10.5px; color: var(--tx-3); }
.mcard-succ {
  margin-top: 6px;
  font-size: 12.5px;
  color: var(--mark);
}

/* ── 整线：hero 线体示意 ── */
.lineflow {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: var(--sh-2);
  padding: 20px 20px 16px;
}
.lf-hd { display: flex; align-items: center; gap: 11px; margin-bottom: 16px; }
.lf-code {
  width: 32px; height: 32px;
  flex: none;
  border-radius: 8px;
  background: var(--acc);
  color: #fff;
  display: grid; place-items: center;
  font-family: var(--mono);
  font-weight: 700;
  font-size: 15px;
}
.lf-code.sm {
  width: 20px; height: 20px;
  font-size: 11px;
  border-radius: 5px;
  display: inline-grid;
  vertical-align: -3px;
  margin-right: 8px;
  background: var(--acc-l);
  color: var(--acc);
}
.lf-hd > div { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.lf-hd > div b { font-size: 15px; color: var(--tx); letter-spacing: -0.01em; }
.lf-hd > div > span { font-size: 12px; color: var(--tx-3); }

.lf-track { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.lf-st {
  display: flex; flex-direction: column; align-items: center; gap: 6px;
  padding: 10px 4px 9px;
  border-radius: 8px;
  background: linear-gradient(180deg, #fcfdff 0%, #f3f7fd 100%);
  border: 1px solid var(--line);
  text-decoration: none;
  transition: transform 0.16s ease, box-shadow 0.16s ease, border-color 0.16s ease;
}
.lf-st:hover {
  transform: translateY(-2px);
  border-color: var(--acc-line);
  background: #fff;
  box-shadow: var(--sh-2);
}
.lf-k { font-size: 10.5px; color: var(--tx-3); letter-spacing: 0.02em; white-space: nowrap; }
.lf-st img { width: 100%; height: 96px; object-fit: contain; mix-blend-mode: multiply; }
.lf-st b {
  font-size: 11.5px;
  color: var(--tx);
  font-family: var(--mono);
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.lf-belt {
  height: 7px;
  margin: 8px 2px 0;
  border-radius: 4px;
  background: repeating-linear-gradient(
    90deg,
    rgba(18, 102, 227, 0.3) 0 9px,
    rgba(18, 102, 227, 0.07) 9px 18px
  );
}
.lf-ft {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  margin-top: 14px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
}
.lf-ft div { background: #fff; padding: 10px 12px; display: flex; flex-direction: column; gap: 2px; }
.lf-ft b { font-family: var(--mono); font-size: 17px; color: var(--tx); line-height: 1.2; }
.lf-ft b i { font-style: normal; font-size: 10px; color: var(--tx-3); margin-left: 2px; }
.lf-ft span { font-size: 11px; color: var(--tx-3); }
.lf-link { display: inline-flex; align-items: center; gap: 6px; margin-top: 14px; font-size: 13px; font-weight: 500; color: var(--acc); }
.lf-link em { font-style: normal; transition: transform 0.16s; }
.lf-link:hover em { transform: translateX(3px); }

/* ── 整线方案卡片 ── */
.plans { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.plan {
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r);
  padding: 20px 20px 18px;
  text-decoration: none;
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}
.plan:hover {
  transform: translateY(-3px);
  border-color: var(--acc-line);
  box-shadow: var(--sh-3);
}
.plan-hd { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 13px; }
.plan-code {
  width: 30px; height: 30px;
  flex: none;
  border-radius: 7px;
  background: var(--acc-l);
  color: var(--acc);
  display: grid; place-items: center;
  font-family: var(--mono);
  font-weight: 700;
  font-size: 14px;
}
.plan-batch {
  font-size: 11.5px;
  color: var(--tx-3);
  background: var(--bg-soft);
  padding: 3px 9px;
  border-radius: 100px;
  white-space: nowrap;
}
.plan h3 { font-size: 17.5px; color: var(--tx); letter-spacing: -0.012em; }
.plan-tag { margin-top: 8px; font-size: 13.5px; line-height: 1.72; color: var(--tx-2); flex: 1; }
.plan-nums {
  display: flex;
  gap: 22px;
  margin-top: 15px;
  padding-top: 14px;
  border-top: 1px dashed var(--line-2);
}
.plan-nums span { display: flex; flex-direction: column; gap: 1px; }
.plan-nums b { font-family: var(--mono); font-size: 16.5px; color: var(--acc); line-height: 1.2; }
.plan-nums i { font-style: normal; font-size: 10.5px; color: var(--tx-3); }
.plan-chain {
  margin-top: 12px;
  font-size: 11.5px;
  line-height: 1.65;
  color: var(--tx-3);
  letter-spacing: 0.01em;
}
.plan-go { margin-top: 12px; font-size: 12.5px; font-weight: 500; color: var(--acc); }

/* ── 方案列表页：分组 ── */
.batch { margin-top: 46px; }
.batch:first-of-type { margin-top: 34px; }
.batch-hd {
  display: flex;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
  padding-bottom: 14px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--line);
}
.batch-hd h2 { font-size: 20px; letter-spacing: -0.02em; }
.batch-hd span {
  font-size: 11.5px;
  color: var(--acc);
  background: var(--acc-l);
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 500;
}
.batch-hd p { flex-basis: 100%; margin-top: 2px; font-size: 13.5px; line-height: 1.7; color: var(--tx-3); }

/* ── 方案列表：横向行 ── */
.lrows { display: grid; gap: 12px; }
.lrow {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr) auto 22px;
  gap: 18px;
  align-items: center;
  padding: 18px 22px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r);
  text-decoration: none;
  transition: border-color 0.16s ease, box-shadow 0.16s ease, transform 0.16s ease;
}
.lrow:hover {
  border-color: var(--acc-line);
  box-shadow: var(--sh-2);
  transform: translateX(2px);
}
.lrow-code {
  width: 34px; height: 34px;
  border-radius: 8px;
  background: var(--acc-l);
  color: var(--acc);
  display: grid; place-items: center;
  font-family: var(--mono);
  font-weight: 700;
  font-size: 14px;
}
.lrow-main { min-width: 0; }
.lrow-hd { display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; }
.lrow-hd b { font-size: 16px; color: var(--tx); letter-spacing: -0.01em; }
.lrow-hd em { font-style: normal; font-size: 11.5px; color: var(--tx-3); }
.lrow-main p { margin-top: 6px; font-size: 13.5px; line-height: 1.7; color: var(--tx-2); }
.lrow-chain { color: var(--tx-3) !important; font-size: 11.5px !important; letter-spacing: 0.01em; }
.lrow-nums { display: flex; gap: 24px; }
.lrow-nums span { display: flex; flex-direction: column; gap: 1px; }
.lrow-nums b { font-family: var(--mono); font-size: 16px; color: var(--acc); line-height: 1.2; }
.lrow-nums i { font-style: normal; font-size: 10.5px; color: var(--tx-3); }
.lrow-go { color: var(--tx-3); font-size: 15px; transition: transform 0.16s ease, color 0.16s ease; }
.lrow:hover .lrow-go { color: var(--acc); transform: translateX(3px); }

/* ── 工位序列 ── */
.stations { list-style: none; margin: 10px 0 0; padding: 0; }
.station {
  position: relative;
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 18px;
  padding-bottom: 28px;
}
.station::before {
  content: "";
  position: absolute;
  left: 23px;
  top: 40px;
  bottom: 0;
  width: 1px;
  background: var(--line-2);
}
.station:last-child { padding-bottom: 0; }
.station:last-child::before { display: none; }
.station-no {
  position: relative;
  z-index: 1;
  width: 38px; height: 38px;
  margin-left: 4px;
  border-radius: 50%;
  background: #fff;
  border: 1px solid var(--acc-line);
  color: var(--acc);
  display: grid; place-items: center;
  font-family: var(--mono);
  font-size: 12.5px;
  font-weight: 600;
}
.station-hd { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; padding-top: 6px; }
.station-hd b { font-size: 16.5px; color: var(--tx); letter-spacing: -0.01em; }
.station-hd span { font-size: 13px; color: var(--tx-3); font-family: var(--mono); }
.station-hd span a {
  color: var(--acc);
  text-decoration: none;
  border-bottom: 1px dashed var(--acc-line);
  padding-bottom: 1px;
}
.station-hd span a:hover { border-bottom-style: solid; }
.station-b > p { margin-top: 10px; font-size: 14.5px; line-height: 1.8; color: var(--tx-2); max-width: 46em; }
.station-tap {
  margin-top: 11px;
  padding: 2px 0 2px 14px;
  background: none;
  border-left: 2px solid var(--acc-line);
  border-radius: 0;
  font-size: 14px !important;
  color: var(--tx-3) !important;
}
.station-tap b {
  display: block;
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--mark);
  margin-bottom: 4px;
}

/* ── 节拍平衡表 ── */
.bal-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--r);
  box-shadow: var(--sh-1);
}
.bal { width: 100%; min-width: 540px; border-collapse: collapse; font-size: 14px; }
.bal caption {
  caption-side: top;
  text-align: left;
  padding: 13px 18px;
  font-size: 12px;
  color: var(--tx-3);
  background: var(--bg-soft);
  border-bottom: 1px solid var(--line);
}
.bal th, .bal td { padding: 12px 18px; text-align: left; border-bottom: 1px solid var(--line); }
.bal thead th { font-size: 11.5px; font-weight: 600; color: var(--tx-3); letter-spacing: 0.05em; background: #fff; }
.bal tbody th { font-weight: 500; color: var(--tx); font-size: 14px; }
.bal tbody td { color: var(--tx-2); font-variant-numeric: tabular-nums; }
.bal tbody tr:last-child th, .bal tbody tr:last-child td { border-bottom: none; }
.bal tr.hot { background: #fdf7ee; }
.bal tr.hot th { color: #7c4a09; font-weight: 600; }
.bal tr.hot td:last-child { color: var(--mark); font-weight: 600; }
.bal td.load em { font-style: normal; }
.lb { display: block; width: 70px; height: 4px; margin-top: 6px; background: var(--bg-soft-2); border-radius: 2px; overflow: hidden; }
.lb i { display: block; height: 100%; background: var(--acc); border-radius: 2px; }
.bal tr.hot .lb i { background: #d97706; }
.bal-note {
  margin-top: 15px;
  padding-left: 15px;
  border-left: 3px solid var(--acc);
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--tx-2);
}
.bal-note b { color: var(--tx); }

/* ── 落地陷阱 ── */
.traps { display: grid; gap: 16px; }
.trap {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r);
  padding: 20px 22px;
  box-shadow: var(--sh-1);
}
.trap b { display: block; margin-bottom: 8px; font-size: 15.5px; color: var(--tx); }
.trap p { font-size: 14.5px; line-height: 1.8; color: var(--tx-2); }

/* 方案页的相关设备卡：图不需要那么大 */
.mcards.tight .mcard-img { aspect-ratio: 3 / 2; }
.mcards.tight .mcard-b { padding: 14px 16px 16px; }

/* ── 方案翻页 ── */
.plan-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 50px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
}
.plan-nav a {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 16px 20px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r);
  text-decoration: none;
  transition: border-color 0.16s ease, box-shadow 0.16s ease;
}
.plan-nav a:hover { border-color: var(--acc-line); box-shadow: var(--sh-2); }
.plan-nav .nx { text-align: right; }
.plan-nav span { font-size: 11.5px; color: var(--tx-3); }
.plan-nav b { font-size: 14.5px; color: var(--tx); }

/* 方案页头部单栏 + 四个数字 */
.mhead.plain { grid-template-columns: minmax(0, 1fr); }
.mhead-lead { margin-top: 16px; font-size: 15.5px; line-height: 1.85; color: var(--tx-2); max-width: 46em; }
.fnums.q4 { grid-template-columns: repeat(4, 1fr); }

/* ── 机型详情 ── */
.mhead {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 0.76fr);
  gap: 48px;
  align-items: center;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--line);
}
.mhead-fam {
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--acc);
  margin-bottom: 12px;
  font-weight: 500;
}
.mhead-txt { min-width: 0; }
.mhead h1 {
  font-size: clamp(30px, 4vw, 42px);
  letter-spacing: -0.03em;
  color: var(--tx);
  display: flex;
  align-items: baseline;
  gap: 14px;
  flex-wrap: wrap;
  font-variant-numeric: tabular-nums;
}
.mhead h1 span {
  font-size: clamp(15px, 1.6vw, 18px);
  font-weight: 400;
  color: var(--tx-3);
  letter-spacing: 0;
}
.mhead .lead { font-size: 16.5px; margin-top: 16px; max-width: 34em; }
.mhead-vis {
  position: relative;
  aspect-ratio: 10 / 9;
  border-radius: 12px;
  overflow: hidden;
  background: linear-gradient(180deg, #fcfdfe 0%, #f4f8fc 100%);
  border: 1px solid var(--line);
  box-shadow: var(--sh-1);
  padding: 12px;
}
.mhead-vis img {
  position: relative;
  z-index: 1;
  width: 100%; height: 100%;
  object-fit: contain;
  mix-blend-mode: multiply;
}

.stop {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  margin-top: 24px;
  padding: 16px 20px;
  background: var(--mark-soft);
  border: 1px solid var(--mark-line);
  border-left: 3px solid #d97706;
  border-radius: var(--r-sm);
}
.stop-tag {
  flex: none;
  font-size: 11.5px;
  background: #d97706;
  color: #fff;
  padding: 3px 9px;
  border-radius: 4px;
  letter-spacing: 0.02em;
  font-weight: 600;
}
.stop b { font-size: 15px; color: #7c4a09; }
.stop p { margin-top: 5px; font-size: 14px; color: #8a5c1c; }
.stop a { color: #9a5b06; text-decoration: underline; text-underline-offset: 3px; }

.fnums {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 24px;
}
.fnum {
  position: relative;
  background: #fff;
  border: 1px solid var(--line);
  border-top: 3px solid var(--acc);
  border-radius: var(--r);
  padding: 20px 20px 18px;
  display: flex;
  flex-direction: column;
  gap: 1px;
}
.fnum b {
  font-size: clamp(24px, 2.8vw, 31px);
  font-weight: 700;
  letter-spacing: -0.025em;
  font-variant-numeric: tabular-nums;
  color: var(--tx);
  line-height: 1.15;
}
.fnum i {
  font-style: normal;
  font-size: 11.5px;
  color: var(--acc);
}
.fnum span { margin-top: 5px; font-size: 12.5px; color: var(--tx-3); }

.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 52px;
  margin-top: 52px;
  align-items: start;
}
.split-side { position: sticky; top: 96px; display: flex; flex-direction: column; gap: 18px; }
.side-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r);
  padding: 20px;
  box-shadow: var(--sh-1);
}
.side-card.soft { background: var(--bg-soft); box-shadow: none; }
.side-card h2 {
  font-size: 14px;
  color: var(--tx);
  margin-bottom: 12px;
  font-weight: 700;
  letter-spacing: 0;
}
.side-kv li {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 10px;
  padding: 9px 0;
  border-bottom: 1px solid #eef3fa;
}
.side-kv li:last-child { border-bottom: none; }
.side-kv span { font-size: 12.5px; color: var(--tx-2); }
.side-kv b {
  font-size: 13.5px;
  color: var(--tx);
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}
.side-kv b i { font-style: normal; font-size: 10.5px; color: var(--tx-3); margin-left: 2px; }
.side-card .btn { margin-top: 14px; }
.side-link {
  display: block;
  text-align: center;
  margin-top: 10px;
  font-size: 12.5px;
  color: var(--tx-3);
}
.side-link:hover { color: var(--acc); }
.side-list li {
  padding: 8px 0;
  border-bottom: 1px solid #eef3fa;
  font-size: 13.5px;
}
.side-list li:last-child { border-bottom: none; }
.side-list a { color: var(--tx-2); }
.side-list a:hover { color: var(--acc); }
.side-list em {
  display: block;
  margin-top: 2px;
  font-style: normal;
  font-size: 11.5px;
  color: var(--tx-3);
}

/* ── 参数解读 ── */
.reading {
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}
.reading:first-of-type { border-top: 1px solid var(--line); }
.reading h3 {
  font-size: 16px;
  color: var(--tx);
  margin-bottom: 8px;
  display: flex;
  gap: 10px;
  align-items: center;
}
.reading h3::before {
  content: "";
  width: 14px;
  height: 3px;
  border-radius: 2px;
  background: var(--acc);
  flex: none;
}
.reading p { font-size: 15px; color: var(--tx-2); line-height: 1.82; }

/* ── 表格 ── */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--r);
  background: #fff;
}
.spec-t, .cmp {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
.cmp { min-width: 680px; }
.spec-t th, .spec-t td, .cmp th, .cmp td {
  text-align: left;
  padding: 11px 18px;
  border-bottom: 1px solid #eef3fa;
  vertical-align: top;
}
.spec-t th {
  width: 34%;
  font-weight: 500;
  color: var(--tx-2);
  background: #f8fafd;
  font-size: 13.5px;
}
.spec-t td {
  color: var(--tx);
  font-size: 13.5px;
  font-variant-numeric: tabular-nums;
}
.spec-t tr:last-child th, .spec-t tr:last-child td { border-bottom: none; }
.spec-t tr:hover th, .spec-t tr:hover td { background: var(--bg-soft); }

.cmp caption {
  text-align: left;
  font-size: 12.5px;
  color: var(--tx-3);
  padding: 14px 18px 10px;
  background: #f8fafd;
  border-bottom: 1px solid var(--line);
}
.cmp thead th {
  background: var(--acc-l);
  color: #0d3f8f;
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0;
  white-space: nowrap;
  border-bottom: 1px solid var(--acc-line);
}
.cmp tbody th {
  font-weight: 600;
  color: var(--tx);
  white-space: nowrap;
  background: #f8fafd;
}
.cmp tbody td { font-size: 13px; color: var(--tx-2); font-variant-numeric: tabular-nums; }
.cmp tbody tr:hover td, .cmp tbody tr:hover th { background: var(--bg-soft); }
.cmp tbody tr:last-child th, .cmp tbody tr:last-child td { border-bottom: none; }

/* ── 不适用场景 ── */
.misfit { border-top: 1px solid var(--line); }
.misfit li {
  position: relative;
  padding: 14px 0 14px 28px;
  border-bottom: 1px solid var(--line);
  font-size: 15px;
  color: var(--tx-2);
}
.misfit li::before {
  content: "×";
  position: absolute;
  left: 2px;
  top: 13px;
  color: #c0392b;
  font-weight: 700;
  font-size: 15px;
}

/* ── 问答 ── */
.qas { border-top: 1px solid var(--line); }
.qa { padding: 18px 0; border-bottom: 1px solid var(--line); }
.qa h3 { font-size: 15.5px; color: var(--tx); margin-bottom: 7px; }
.qa h3::before {
  content: "Q";
  color: var(--acc);
  font-size: 12px;
  font-weight: 700;
  margin-right: 9px;
  border: 1px solid var(--acc-line);
  border-radius: 3px;
  padding: 0 4px;
}
.qa p { font-size: 14.5px; color: var(--tx-2); padding-left: 26px; }

/* ── 相关链接 ── */
.rel {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 14px;
}
.rel a {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  padding: 16px 18px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  color: var(--tx-2);
  transition: border-color 0.16s, background 0.16s, box-shadow 0.16s;
}
.rel a:hover {
  text-decoration: none;
  border-color: var(--acc-line);
  background: var(--bg-soft);
  box-shadow: var(--sh-2);
}
.rel b { font-size: 14.5px; color: var(--tx); font-variant-numeric: tabular-nums; }
.rel span { font-size: 13px; color: var(--tx-3); }

/* 404 等窄栏页面的四宫格入口 */
.page.narrow .rel { grid-template-columns: repeat(2, 1fr); }

/* ── 阅读顺序 ── */
.steps {
  border: 1px solid var(--line);
  border-radius: var(--r);
  overflow: hidden;
  background: #fff;
}
.step {
  display: grid;
  grid-template-columns: 68px 1fr;
  gap: 20px;
  padding: 20px 24px;
  border-bottom: 1px solid #eef3fa;
}
.step:last-child { border-bottom: none; }
.step > span {
  font-size: 22px;
  letter-spacing: -0.02em;
  line-height: 1.25;
  font-weight: 700;
  color: var(--acc);
  font-variant-numeric: tabular-nums;
}
.step b { display: block; font-size: 16px; margin-bottom: 5px; color: var(--tx); }
.step p { font-size: 14.5px; color: var(--tx-2); }
.step a { color: var(--acc); text-decoration: underline; text-underline-offset: 3px; }

/* ── 贴装头卡片 ── */
.hcards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; margin-top: 32px; }
.hcard {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r);
  padding: 22px 22px 20px;
  box-shadow: var(--sh-1);
}
.hcard-h {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}
.hcard-h b {
  font-size: 25px;
  letter-spacing: -0.02em;
  color: var(--acc);
  font-weight: 700;
}
.hcard-h span { font-size: 14px; color: var(--tx-2); flex: 1; }
.hcard-h i { font-style: normal; font-size: 12px; color: var(--tx-3); }
.hcard-d { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 18px; margin-bottom: 14px; }
.hcard-d div { display: flex; flex-direction: column; gap: 1px; }
.hcard-d dt { font-size: 11.5px; color: var(--tx-3); }
.hcard-d dd { font-size: 14px; color: var(--tx); font-variant-numeric: tabular-nums; }
.hcard-d dd.hl { color: var(--acc); font-weight: 700; }
.hcard-use { font-size: 14px; color: var(--tx-2); padding-bottom: 12px; }
.hcard-limit {
  font-size: 13.5px;
  color: #7c4a09;
  background: var(--mark-soft);
  border: 1px solid var(--mark-line);
  border-left: 3px solid #d97706;
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  padding: 11px 14px;
}
.hcard-limit b { color: var(--mark); }

/* ── 术语表 ── */
.terms { border-top: 1px solid var(--line); }
.term {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 28px;
  padding: 17px 0;
  border-bottom: 1px solid var(--line);
}
.term dt {
  font-size: 15px;
  font-weight: 700;
  color: var(--tx);
  letter-spacing: -0.01em;
}
.term dd { font-size: 14.5px; color: var(--tx-2); }

/* ── 现场记录列表 ── */
.fns {
  border: 1px solid var(--line);
  border-radius: var(--r);
  overflow: hidden;
  background: #fff;
}
.fn {
  display: grid;
  grid-template-columns: 62px 1fr;
  gap: 22px;
  padding: 24px 22px;
  border-bottom: 1px solid #eef3fa;
  color: var(--tx-2);
  transition: background 0.14s;
}
.fn:last-child { border-bottom: none; }
.fn:hover { background: var(--bg-soft); text-decoration: none; color: var(--tx-2); }
.fn-no {
  font-size: 24px;
  line-height: 1;
  padding-top: 3px;
  font-weight: 700;
  color: #c9d9ee;
  font-variant-numeric: tabular-nums;
}
.fn-meta { font-size: 12.5px; color: var(--acc); margin-bottom: 7px; }
.fn h3 { font-size: 17.5px; margin-bottom: 7px; letter-spacing: -0.01em; color: var(--tx); }
.fn p { font-size: 14px; color: var(--tx-2); max-width: 54em; }
.fn-go { display: inline-block; margin-top: 9px; font-size: 13px; color: var(--acc); }

/* ── 现场记录详情 ── */
.facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 14px;
  margin-top: 24px;
}
.facts div {
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.facts span { font-size: 11.5px; color: var(--tx-3); letter-spacing: 0.02em; }
.facts b { font-size: 14px; color: var(--tx); font-weight: 500; line-height: 1.6; }

.decision {
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 18px;
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
}
.decision:first-of-type { border-top: 1px solid var(--line); }
.decision-no {
  font-size: 13px;
  width: 30px; height: 30px;
  display: grid; place-items: center;
  background: var(--acc-l);
  border: 1px solid var(--acc-line);
  color: var(--acc);
  border-radius: var(--r-sm);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}
.decision h3 { font-size: 16.5px; color: var(--tx); margin-bottom: 7px; }
.decision p { font-size: 15px; color: var(--tx-2); }

.config { border-top: 1px solid var(--line); counter-reset: c; }
.config li {
  padding: 13px 0 13px 42px;
  border-bottom: 1px solid var(--line);
  font-size: 14.5px;
  color: var(--tx-2);
  position: relative;
  counter-increment: c;
}
.config li::before {
  content: counter(c, decimal-leading-zero);
  position: absolute;
  left: 0;
  font-size: 12px;
  color: var(--acc);
  font-variant-numeric: tabular-nums;
}

.lesson {
  background: var(--mark-soft);
  border: 1px solid var(--mark-line);
  border-left: 3px solid #d97706;
  border-radius: var(--r-sm);
  padding: 22px 24px;
}
.lesson p { font-size: 15.5px; color: #7c4a09; line-height: 1.85; }

/* ── 技术笔记 ── */
.nts { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.nt {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r);
  padding: 24px 22px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  color: var(--tx-2);
  transition: border-color 0.16s, transform 0.18s, box-shadow 0.18s;
}
.nt:hover {
  border-color: var(--acc-line);
  text-decoration: none;
  transform: translateY(-2px);
  box-shadow: var(--sh-3);
}
.nt-k { font-size: 11.5px; color: var(--acc); letter-spacing: 0.02em; }
.nt h3 { font-size: 17.5px; letter-spacing: -0.01em; }
.nt p { font-size: 14px; color: var(--tx-2); flex: 1; }
.nt-d { font-size: 12.5px; color: var(--tx-3); }

.article { max-width: var(--w-n); }
.article > p { font-size: 16.5px; color: var(--tx-2); line-height: 1.88; margin-bottom: 17px; }
.blk { padding: 24px 0; border-bottom: 1px solid var(--line); }
.blk:first-child { padding-top: 0; }
.blk h2 {
  font-size: 19px;
  color: var(--tx);
  margin-bottom: 10px;
  letter-spacing: -0.015em;
}
.blk p { font-size: 16px; color: var(--tx-2); line-height: 1.88; }

/* ── 表单 ── */
.form { border-top: 1px solid var(--line); padding-top: 28px; }
.frow { display: grid; grid-template-columns: 128px 1fr; gap: 20px; align-items: start; margin-bottom: 15px; }
.frow label { font-size: 14px; color: var(--tx-2); padding-top: 11px; }
.frow label em { color: #c0392b; font-style: normal; margin-left: 3px; }
.frow input, .frow textarea {
  width: 100%;
  font: inherit;
  font-size: 15px;
  padding: 10px 14px;
  border: 1px solid var(--line-2);
  background: #fff;
  color: var(--tx);
  border-radius: var(--r-sm);
  transition: border-color 0.16s, box-shadow 0.16s;
}
.frow input::placeholder, .frow textarea::placeholder { color: #a8b6c8; }
.frow input:focus, .frow textarea:focus {
  outline: none;
  border-color: var(--acc);
  box-shadow: 0 0 0 3px rgba(18, 102, 227, 0.14);
}
.frow textarea { resize: vertical; line-height: 1.72; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; }
.form .btn { margin-left: 148px; }
.form-note { margin: 13px 0 0 148px; font-size: 14px; color: var(--acc); }
.form-note.err { color: #c0392b; }

/* ── 页脚 ── */
.ftr {
  margin-top: 88px;
  background: #0f2a4a;
  color: #a9bdd6;
  padding: 52px 0 26px;
  font-size: 14px;
}
.ftr-in {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 44px;
  padding-bottom: 30px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}
.ftr-col b { display: block; color: #fff; font-size: 14.5px; margin-bottom: 11px; }
.ftr-col p { font-size: 13.5px; line-height: 1.85; margin-bottom: 5px; color: #a9bdd6; }
.ftr-col a { color: #cfe0f2; }
.ftr-col a:hover { color: #fff; }
.ftr-bot {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding-top: 20px;
  font-size: 12.5px;
  color: #7e93ad;
  flex-wrap: wrap;
}

/* ── 滚动条 ── */
::-webkit-scrollbar { width: 11px; height: 11px; }
::-webkit-scrollbar-track { background: #f3f6fb; }
::-webkit-scrollbar-thumb {
  background: #c9d5e5;
  border-radius: 8px;
  border: 3px solid #f3f6fb;
}
::-webkit-scrollbar-thumb:hover { background: #adbdd2; }

/* ── 响应式 ── */
@media (max-width: 1040px) {
  .plans { grid-template-columns: repeat(2, 1fr); }
  .fnums.q4 { grid-template-columns: repeat(2, 1fr); }
  .split { grid-template-columns: 1fr; gap: 38px; }
  .split-side { position: static; flex-direction: row; flex-wrap: wrap; }
  .side-card { flex: 1; min-width: 260px; }
  .mcards { grid-template-columns: repeat(2, 1fr); }
  .mshow { grid-template-columns: repeat(2, 1fr); }
  .hcards { grid-template-columns: 1fr; }
  .hero-in { gap: 36px; }
}

@media (max-width: 900px) {
  .nav-tg { display: flex; }
  .nav {
    position: absolute;
    left: 0; right: 0;
    top: 72px;
    background: #fff;
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    padding: 10px 18px 16px;
    gap: 2px;
    display: none;
    box-shadow: 0 18px 30px -20px rgba(13, 33, 55, 0.35);
  }
  .nav.open { display: flex; }
  .nav a { padding: 12px 12px; font-size: 15px; }

  .hero { padding: 52px 0 50px; }
  .hero-in { grid-template-columns: 1fr; }
  .hero-vis { order: 2; max-width: 480px; margin: 6px auto 0; width: 100%; }
  .lineflow { order: 2; max-width: 500px; margin: 8px auto 0; width: 100%; }
  .hero h1 { max-width: none; }

  .entry3 { grid-template-columns: 1fr; }
  .idx { columns: 1; }
  .idx-group { margin-bottom: 14px; }
  .nts { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); max-width: none; }
  .stat:nth-child(3) { border-left: none; }
  .stat:nth-child(n + 3) { border-top: 1px solid var(--line); }
  .row { grid-template-columns: 1fr; gap: 3px; padding: 14px 18px; }
  .row-m { text-align: left; }
  .term { grid-template-columns: 1fr; gap: 5px; }
  .ftr-in { grid-template-columns: 1fr; gap: 26px; }
  .frow { grid-template-columns: 1fr; gap: 6px; }
  .frow label { padding-top: 0; }
  .form .btn, .form-note { margin-left: 0; }
  .fn { grid-template-columns: 1fr; gap: 6px; }
  .fn-no { font-size: 18px; }
  .step { grid-template-columns: 40px 1fr; gap: 12px; padding: 17px 18px; }
  .step > span { font-size: 17px; }
  .mhead { grid-template-columns: 1fr; gap: 26px; }
  .mhead-vis { max-width: 420px; width: 100%; }
}

@media (max-width: 640px) {
  body { font-size: 15.5px; }
  .page { padding: 26px 20px 68px; }
  .wrap { padding: 0 20px; }
  .crumb { padding: 14px 20px 0; }
  .hero { padding: 40px 0 40px; }
  .hero h1 { font-size: 27px; line-height: 1.24; }
  .lead { font-size: 15.5px; }
  .hero-vis-meta { flex-direction: column; align-items: flex-start; gap: 10px; }
  .hvm-r { gap: 24px; }
  .eyebrow { font-size: 12px; }
  .plans { grid-template-columns: 1fr; }
  .lrow { grid-template-columns: 30px minmax(0, 1fr); gap: 6px 12px; padding: 16px 16px 14px; }
  .lrow-nums { grid-column: 2; gap: 20px; margin-top: 4px; }
  .lrow-go { display: none; }
  .lrow-hd em { flex-basis: 100%; }
  .lf-track { grid-template-columns: repeat(2, 1fr); }
  .lf-st img { height: 74px; }
  .fnums.q4 { grid-template-columns: 1fr; }
  .station { grid-template-columns: 36px minmax(0, 1fr); gap: 13px; padding-bottom: 24px; }
  .station::before { left: 17px; top: 36px; }
  .station-no { width: 30px; height: 30px; margin-left: 2px; font-size: 11px; }
  .station-b > p { font-size: 14px; }
  .station-tap { padding: 10px 12px; font-size: 13.5px !important; }
  .plan-nav { grid-template-columns: 1fr; gap: 12px; }
  .trap { padding: 18px; }
  .mcards { grid-template-columns: 1fr; }
  .mshow { grid-template-columns: 1fr; padding: 14px; }
  .fnums { grid-template-columns: 1fr; gap: 10px; }
  .fnum { flex-direction: row; align-items: baseline; gap: 8px; padding: 14px 16px; }
  .fnum b { font-size: 23px; }
  .fnum span { margin-top: 0; margin-left: auto; text-align: right; font-size: 12px; }
  .hcard-d { grid-template-columns: 1fr; }
  .mhead h1 { gap: 6px; font-size: 27px; }
  .split-side { flex-direction: column; }
  .side-card { min-width: 0; }
  .cmp { font-size: 12.5px; }
  .cmp thead th, .cmp tbody td, .cmp tbody th { padding: 10px 12px; }
  .page.narrow .rel { grid-template-columns: 1fr; }
  .decision { grid-template-columns: 1fr; gap: 8px; }
  .lesson { padding: 18px; }
  .stat b { font-size: 21px; }
  .band { padding: 44px 0; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
  .mcard:hover, .entry:hover, .nt:hover, .rel a:hover { transform: none; }
}