:root {
  --qc-accent: #f58220;
  --qc-ink: #171d21;
  --qc-muted: #5e676e;
  --qc-light: #faf9f6;
  --qc-edge: #e4e6e5;
  --qc-dark: #11191e;
  --qc-radius: 14px;
  color-scheme: light;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  color: var(--qc-ink);
  background: var(--qc-light);
  font-family: "Microsoft YaHei", "PingFang SC", system-ui, sans-serif;
  font-size: 14px;
  line-height: 1.75;
}
h1, h2, h3, p { margin: 0; font-family: inherit; }
a { color: inherit; text-decoration: none; }
a:focus-visible { outline: 3px solid #f58220; outline-offset: 5px; }
.qc-wrap { width: 100%; max-width: 1120px; margin: auto; padding-left: 48px; padding-right: 48px; }
.qc-header { background: var(--qc-dark); color: #f8fafb; border-bottom: 1px solid #ffffff12; }
.qc-nav { display: flex; align-items: center; justify-content: space-between; gap: 24px; min-height: 80px; }
.qc-wordmark { font-size: 23px; font-weight: 500; letter-spacing: 3px; white-space: nowrap; }
.qc-menu { display: flex; align-items: center; }
.qc-action {
  position: relative;
  display: inline-block;
  background: #b9510c;
  color: #ffffff;
  padding: 6px 12px;
  border-radius: 5px;
  font-size: 13px;
  line-height: 20px;
  font-weight: 500;
  white-space: nowrap;
}
.qc-action:hover { background: #a94708; }
/* Preserve the approved 32px orange button while giving touch a 44px target. */
@media (pointer: coarse) { .qc-action::before { content: ""; position: absolute; inset: -6px 0; } }
.qc-hero { position: relative; overflow: hidden; color: #f7f9fa; background: var(--qc-dark); }
.qc-hero::before { content: ""; position: absolute; width: 600px; height: 600px; right: -240px; top: -140px; border-radius: 50%; background: radial-gradient(circle, #f582202e, transparent 65%); pointer-events: none; }
.qc-hero-grid { position: relative; display: grid; grid-template-columns: 1.25fr 1fr; gap: 35px; align-items: center; padding-top: 76px; padding-bottom: 78px; }
.qc-eyebrow { display: flex; align-items: center; gap: 9px; font-size: 11px; letter-spacing: 2px; font-weight: 500; color: #aa4c03; margin-bottom: 22px; }
.qc-eyebrow::before { content: ""; display: inline-block; width: 22px; height: 2px; background: var(--qc-accent); }
.qc-hero .qc-eyebrow { color: var(--qc-accent); }
h1 { font-size: clamp(32px, 4.6vw, 54px); line-height: 1.35; letter-spacing: -1px; font-weight: 500; margin-bottom: 24px; }
h1 span { color: var(--qc-accent); }
.qc-lead { font-size: 14px; line-height: 1.95; color: #aeb9c1; max-width: 410px; }
.qc-visual { height: 310px; position: relative; display: flex; align-items: center; justify-content: center; perspective: 850px; }
.qc-plane { position: absolute; width: 255px; height: 230px; border-radius: 18px; transform: rotateY(-19deg) rotateX(9deg) rotateZ(-8deg); border: 1px solid #ffffff16; background: linear-gradient(130deg, #ffffff08, #ffffff02); }
.qc-plane.back { transform: translate(24px, -24px) rotateY(-19deg) rotateX(9deg) rotateZ(-8deg); border-color: #f582204d; }
.qc-plane.front { padding: 22px; background: linear-gradient(140deg, #253137f5, #121e24f5); box-shadow: -20px 28px 70px #00000038; }
.qc-plane-title { font-size: 11px; letter-spacing: 3px; color: #bac6cc; margin-bottom: 20px; }
.qc-flow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; align-items: end; height: 102px; margin-bottom: 18px; }
.qc-flow > div { border-radius: 5px 5px 0 0; background: linear-gradient(0deg, #f582201f, color-mix(in srgb, var(--qc-accent) 70%, #ffe3bb)); border-top: 1px solid #ffc99b; display: flex; align-items: flex-end; justify-content: center; padding-bottom: 8px; color: #fff4e8; font-size: 11px; }
.qc-flow > div:nth-child(1) { height: 46px; opacity: .5; }
.qc-flow > div:nth-child(2) { height: 64px; opacity: .65; }
.qc-flow > div:nth-child(3) { height: 82px; opacity: .8; }
.qc-flow > div:nth-child(4) { height: 102px; }
.qc-principle { border-top: 1px solid #ffffff15; padding-top: 12px; color: #9eafb8; font-size: 10px; letter-spacing: 2px; }
.qc-section { padding-top: 66px; padding-bottom: 66px; }
.qc-section h2 { font-weight: 500; font-size: clamp(25px, 3vw, 35px); line-height: 1.5; letter-spacing: -.6px; }
.qc-section .qc-eyebrow { margin-bottom: 15px; font-size: 10px; }
.qc-about-head { display: grid; grid-template-columns: 1fr 1.15fr; gap: 44px; align-items: start; }
.qc-about-head > p { font-size: 13px; line-height: 2; color: var(--qc-muted); padding-top: 7px; }
.qc-values { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; margin-top: 34px; }
.qc-value { border: 1px solid var(--qc-edge); border-radius: var(--qc-radius); padding: 23px; background: #fff; }
.qc-value-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; }
.qc-value svg { color: #bd5b0c; width: 24px; height: 24px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.qc-value h3 { font-size: 17px; font-weight: 500; margin-bottom: 8px; }
.qc-value p { font-size: 12px; color: var(--qc-muted); line-height: 1.9; }
.qc-road { background: #eef0ec; }
.qc-road-top { display: flex; align-items: flex-start; justify-content: space-between; gap: 20px; }
.qc-progress-copy { font-size: 15px; color: #46534f; margin-top: 18px; }
.qc-progress-copy strong { font-weight: 500; color: #aa4c03; }
.qc-levels { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 10px; margin-top: 26px; padding-top: 35px; position: relative; }
.qc-crossing { position: absolute; top: 0; left: calc(40% + 4px); width: calc(40% - 10px); text-align: center; font-size: 11px; color: #aa4c03; border-top: 1px solid #dc884f; padding-top: 5px; letter-spacing: 2px; }
.qc-level { display: flex; flex-direction: column; align-items: flex-start; text-align: left; border: 1px solid #d8dfd9; border-radius: 10px; background: #f8faf7; color: #2a3530; padding: 18px 14px; min-width: 0; }
.qc-level.current { background: #24332c; color: #f1f6f1; border-color: #24332c; }
.qc-level.next { background: #fff1e2; border-color: #df984f; }
.qc-level .qc-lnum { font-size: 27px; line-height: 1.1; font-weight: 500; letter-spacing: -1px; margin-bottom: 15px; }
.qc-level h3 { font-size: 14px; font-weight: 500; white-space: nowrap; margin-bottom: 8px; }
.qc-lcap { font-size: 11px; line-height: 1.8; opacity: .85; flex: 1; min-height: 60px; }
.qc-person { font-size: 11px; border-top: 1px solid #80918735; padding-top: 10px; margin-top: 12px; width: 100%; }
.qc-ltag { font-size: 10px; letter-spacing: 1px; margin-top: 12px; opacity: .75; }
.qc-contact { background: #fbf6ee; }
.qc-contact-layout { display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.qc-mail { border-bottom: 1px solid #d5baa2; padding: 15px 0; overflow-wrap: anywhere; font-size: clamp(18px, 2.8vw, 30px); color: #272e2a; letter-spacing: -.5px; user-select: text; }
.qc-footer { background: var(--qc-dark); color: #bac3c8; padding-top: 28px; padding-bottom: 28px; }
.qc-footer-top { display: flex; justify-content: space-between; gap: 20px; align-items: center; padding-bottom: 22px; border-bottom: 1px solid #ffffff12; }
.qc-footer-brand { font-size: 18px; letter-spacing: 2px; color: #e3e8ea; }
.qc-footer-top p { font-size: 11px; color: #87959d; }
.qc-footer-bottom { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; font-size: 10px; color: #8d9ba2; padding-top: 18px; }
.qc-footer a:hover { text-decoration: underline; }
@media (max-width: 800px) {
  .qc-wrap { padding-left: 28px; padding-right: 28px; }
  .qc-about-head { gap: 25px; }
  .qc-level { padding: 15px 10px; }
  .qc-lcap { min-height: 78px; }
  .qc-visual { transform: scale(.86); }
  .qc-level h3 { font-size: 12px; }
}
@media (max-width: 620px) {
  .qc-wrap { padding-left: 22px; padding-right: 22px; }
  .qc-nav { min-height: 68px; gap: 12px; }
  .qc-wordmark { font-size: 20px; letter-spacing: 2px; }
  .qc-hero-grid { grid-template-columns: minmax(0, 1fr); padding-top: 48px; padding-bottom: 36px; gap: 18px; }
  h1 { font-size: clamp(28px, 8.2vw, 36px); }
  .qc-visual { height: 240px; transform: scale(.86); margin-top: -8px; }
  .qc-section { padding-top: 45px; padding-bottom: 45px; }
  .qc-about-head { grid-template-columns: minmax(0, 1fr); gap: 18px; }
  .qc-values { grid-template-columns: minmax(0, 1fr); gap: 12px; margin-top: 23px; }
  .qc-value { padding: 20px; }
  .qc-value-top { margin-bottom: 12px; }
  .qc-levels { grid-template-columns: minmax(0, 1fr); padding-top: 0; gap: 11px; }
  .qc-crossing { display: none; }
  .qc-level { display: grid; grid-template-columns: 40px minmax(0, 1fr); column-gap: 16px; padding: 18px; }
  .qc-level .qc-lnum { grid-row: 1 / 5; margin: 3px 0 0; font-size: 27px; }
  .qc-level h3 { font-size: 16px; margin: 0; }
  .qc-lcap { min-height: 0; font-size: 12px; }
  .qc-person { font-size: 12px; margin-top: 8px; padding-top: 6px; }
  .qc-ltag { margin-top: 4px; }
  .qc-contact-layout { display: block; }
  .qc-mail { font-size: 23px; margin-top: 20px; width: 100%; }
  .qc-footer-top, .qc-footer-bottom { display: block; }
  .qc-footer-top p { margin-top: 10px; }
  .qc-footer-bottom span { display: block; margin-top: 5px; }
  .qc-footer-bottom a { display: inline-flex; align-items: center; min-height: 44px; }
}
@media (forced-colors: active) {
  .qc-action { border: 1px solid ButtonText; }
  a:focus-visible { outline-color: Highlight; }
}