/* 左侧数字轨 + 暖橙编号块 */
:root {
  --orange: #e85d04;
  --slate: #334155;
  --paper: #fffdf9;
  --wash: #f1efe8;
  --line: #e4d9c8;
  --ink: #1f2933;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "Trebuchet MS", "Microsoft YaHei", sans-serif;
  background: var(--wash);
  color: var(--ink);
  line-height: 1.8;
  font-size: 16px;
}
a { color: var(--orange); text-decoration: none; }
a:hover { text-decoration: underline; }
.ribbon {
  background: var(--slate);
  color: #fff;
  padding: 12px 0;
}
.ribbon-box {
  width: min(980px, calc(100% - 28px));
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.mark { font-size: 24px; font-weight: 700; }
.tabs a {
  color: #f8e6d4;
  margin-left: 16px;
  font-size: 14px;
  padding-bottom: 3px;
}
.tabs a.current { border-bottom: 2px solid var(--orange); color: #fff; }
.hero-flow {
  background: var(--paper);
  border-bottom: 6px solid var(--orange);
  padding: 40px 0 32px;
}
.hero-flow .box { width: min(860px, calc(100% - 28px)); margin: 0 auto; }
.hero-flow h1 { font-size: 30px; color: var(--slate); margin-bottom: 12px; }
.dl-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
.btn-ora {
  background: var(--orange);
  color: #fff;
  padding: 11px 18px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
}
.btn-ghost {
  border: 1px solid var(--slate);
  color: var(--slate);
  padding: 11px 18px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.rail {
  width: min(860px, calc(100% - 28px));
  margin: 28px auto 40px;
  border-left: 3px solid var(--orange);
  padding-left: 28px;
}
.num-block {
  position: relative;
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 20px 22px 18px;
  margin: 0 0 22px;
}
.num-block .n {
  position: absolute;
  left: -46px;
  top: 18px;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--orange);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
}
.num-block h2 { font-size: 20px; color: var(--slate); margin-bottom: 10px; }
ol.steps { padding-left: 22px; }
ol.steps li { margin: 6px 0; }
.req {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
.req th, .req td { border: 1px solid var(--line); padding: 8px 10px; }
.req th { background: #faeee2; text-align: left; }
.faq-list details { display: none; }
.faq-list article {
  background: var(--paper);
  padding: 14px 16px;
  margin-bottom: 12px;
  border-left: 4px solid var(--slate);
}
.faq-list h3 { font-size: 16px; margin-bottom: 6px; }
.tail {
  background: var(--slate);
  color: #d5dbe3;
  padding: 24px 16px 32px;
  font-size: 13px;
}
.tail .box { width: min(860px, calc(100% - 28px)); margin: 0 auto; }
.tail .safe { color: #ffd1a8; }
.tail a { color: #ffd1a8; }
svg.s { width: 16px; height: 16px; fill: currentColor; }
@media (max-width: 700px) {
  .ribbon-box { flex-direction: column; gap: 10px; }
  .num-block .n { left: -18px; }
  .rail { padding-left: 22px; }
}