:root {
  color-scheme: light;
  --bg: #f7f6f3;
  --panel: #ffffff;
  --panel-soft: #efede9;
  --text: #252525;
  --muted: #68645f;
  --line: rgba(37, 37, 37, 0.12);
  --cyan: #f58220;
  --green: #7b7b7b;
  --silver: #5f5f5f;
  --shadow: 0 24px 80px rgba(37, 37, 37, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family:
    Inter, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", Arial,
    sans-serif;
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration: none;
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 72px;
  padding: 0 clamp(20px, 5vw, 72px);
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.78);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
  font-size: 15px;
  font-weight: 700;
  color: var(--silver);
}

.brand-mark {
  width: 36px;
  height: 36px;
  flex: 0 0 auto;
  display: block;
  border-radius: 8px;
  object-fit: contain;
}

.nav {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 14px;
}

.nav a {
  padding: 8px 14px;
  border-radius: 999px;
  transition:
    color 180ms ease,
    background 180ms ease;
}

.nav a:hover {
  background: #252525;
  color: #fff;
}

.hero {
  position: relative;
  display: grid;
  min-height: 78vh;
  overflow: hidden;
  padding: 132px clamp(20px, 5vw, 72px) 58px;
}

.hero-image,
.hero-shade {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-image {
  object-fit: cover;
  object-position: center right;
  opacity: 0.92;
}

.hero-shade {
  background:
    linear-gradient(90deg, rgba(247, 246, 243, 0.96) 0%, rgba(247, 246, 243, 0.82) 42%, rgba(247, 246, 243, 0.24) 100%),
    linear-gradient(180deg, rgba(247, 246, 243, 0.06) 0%, var(--bg) 100%);
}

.hero-content {
  position: relative;
  z-index: 1;
  align-self: center;
  max-width: 720px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--cyan);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 24px;
  font-size: clamp(48px, 8vw, 92px);
  line-height: 1.02;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 16px;
  font-size: clamp(30px, 4vw, 52px);
  line-height: 1.12;
  letter-spacing: 0;
}

.single-line-title {
  font-size: clamp(30px, 3.4vw, 46px);
  white-space: nowrap;
}

h3 {
  margin-bottom: 10px;
  font-size: 21px;
  line-height: 1.3;
}

.hero-copy {
  max-width: 620px;
  margin-bottom: 32px;
  color: #5f5d59;
  font-size: 18px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 0;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 22px;
  border: 1px solid transparent;
  font-size: 15px;
  font-weight: 800;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    background 180ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button.primary {
  background: var(--cyan);
  color: #fff;
  box-shadow: 0 16px 36px rgba(245, 130, 32, 0.24);
}

.button.secondary {
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.72);
  color: var(--silver);
}

.section,
.band,
.footer {
  padding: 96px clamp(20px, 5vw, 72px);
}

.intro {
  display: grid;
  grid-template-columns: minmax(240px, 0.8fr) minmax(0, 1.2fr);
  gap: clamp(28px, 6vw, 88px);
  align-items: start;
}

.intro > p,
.about-copy p,
.section-head p {
  color: var(--muted);
  font-size: 17px;
}

.section-head {
  max-width: 680px;
}

.section-head.wide {
  max-width: 860px;
  margin-bottom: 34px;
}

.about-founder {
  display: grid;
  grid-template-columns: minmax(240px, 0.8fr) minmax(0, 1.2fr);
  gap: clamp(28px, 6vw, 88px);
  align-items: center;
  border-block: 1px solid var(--line);
  background:
    linear-gradient(135deg, rgba(245, 130, 32, 0.08), transparent 42%),
    #ffffff;
}

.about-copy {
  max-width: 560px;
}

.founder-panel {
  position: relative;
  overflow: hidden;
  padding: 32px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background:
    linear-gradient(180deg, rgba(245, 130, 32, 0.055), rgba(255, 255, 255, 0.92)),
    var(--panel);
  box-shadow: var(--shadow);
}

.founder-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background-image: url("./assets/老马.jpg");
  background-repeat: no-repeat;
  background-size: auto 92%;
  background-position: right center;
  opacity: 0.34;
  -webkit-mask-image: radial-gradient(ellipse at 82% 50%, #000 0 40%, rgba(0, 0, 0, 0.65) 58%, transparent 82%);
  mask-image: radial-gradient(ellipse at 82% 50%, #000 0 40%, rgba(0, 0, 0, 0.65) 58%, transparent 82%);
}

.founder-panel::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(90deg, rgba(255, 255, 255, 0.98) 0%, rgba(255, 255, 255, 0.93) 48%, rgba(255, 255, 255, 0.62) 100%);
}

.founder-panel > * {
  position: relative;
  z-index: 2;
}

.founder-panel p {
  color: var(--muted);
  font-size: 16px;
}

.founder-quote {
  color: var(--text) !important;
  font-size: clamp(22px, 3vw, 34px) !important;
  font-weight: 900;
  line-height: 1.3;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.product-card {
  min-height: 300px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background:
    linear-gradient(180deg, rgba(245, 130, 32, 0.045), rgba(255, 255, 255, 0.92)),
    var(--panel);
}

.product-card-large {
  display: flex;
  flex-direction: column;
}

.card-index {
  display: inline-block;
  margin-bottom: 42px;
  color: var(--green);
  font-size: 20px;
  font-weight: 900;
  line-height: 1;
}

.feature-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin: auto 0 0;
  padding: 22px 0 0;
  list-style: none;
}

.feature-tags li {
  padding: 7px 10px;
  border: 1px solid rgba(245, 130, 32, 0.3);
  border-radius: 6px;
  background: rgba(245, 130, 32, 0.08);
  color: #8b4b17;
  font-size: 13px;
  white-space: nowrap;
}

.product-note {
  margin-top: auto;
  padding-top: 24px;
}

.product-note strong {
  display: block;
  margin-bottom: 8px;
  color: var(--green);
  font-size: 15px;
}

.product-note span {
  display: block;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}

.product-card p,
.case-card p,
.strength-list p,
.timeline p,
.footer p {
  color: var(--muted);
}

.cases {
  background:
    linear-gradient(180deg, rgba(245, 130, 32, 0.05), transparent 34%),
    #f7f6f3;
}

.case-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.case-card {
  position: relative;
  overflow: hidden;
  min-height: 210px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background:
    linear-gradient(180deg, rgba(245, 130, 32, 0.035), rgba(255, 255, 255, 0.94)),
    var(--panel);
}

.case-card::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background-image: var(--case-image);
  background-size: var(--case-size, 62%);
  background-repeat: no-repeat;
  background-position: var(--case-position, right center);
  opacity: 0.68;
}

.case-card::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(90deg, rgba(255, 255, 255, 0.97) 0%, rgba(255, 255, 255, 0.88) 48%, rgba(255, 255, 255, 0.36) 100%);
}

.case-card > * {
  position: relative;
  z-index: 2;
}

.case-bg-01 { --case-image: url("./assets/case-bg-01.png"); }
.case-bg-02 { --case-image: url("./assets/case-bg-02.png"); --case-size: 72%; --case-position: 118% center; }
.case-bg-03 { --case-image: url("./assets/case-bg-03.png"); --case-size: 72%; --case-position: 118% center; }
.case-bg-04 { --case-image: url("./assets/case-bg-04.png"); }
.case-bg-05 { --case-image: url("./assets/case-bg-05.png"); --case-size: 72%; --case-position: 118% center; }
.case-bg-06 { --case-image: url("./assets/case-bg-06.png"); }
.case-bg-07 { --case-image: url("./assets/case-bg-07.png"); }
.case-bg-08 { --case-image: url("./assets/case-bg-08.png"); }
.case-bg-09 { --case-image: url("./assets/case-bg-09.png"); }
.case-bg-10 { --case-image: url("./assets/case-bg-10.png"); }

.case-card span {
  display: inline-block;
  margin-bottom: 18px;
  color: var(--cyan);
  font-size: 13px;
  font-weight: 900;
}

.case-card h3 {
  font-size: 20px;
}

.case-card p {
  margin-bottom: 0;
  font-size: 15px;
}

.case-footnote {
  max-width: 820px;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: 15px;
}

.band {
  display: grid;
  grid-template-columns: minmax(240px, 0.8fr) minmax(0, 1.3fr);
  gap: clamp(28px, 6vw, 88px);
  align-items: center;
  border-block: 1px solid var(--line);
  background:
    linear-gradient(135deg, rgba(245, 130, 32, 0.08), transparent 42%),
    var(--panel-soft);
}

.strength-list {
  display: grid;
  gap: 1px;
  border: 1px solid var(--line);
  background: var(--line);
}

.strength-list > div {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 72px;
  align-items: center;
  gap: 28px;
  padding: 28px;
  background: #ffffff;
}

.strength-list h3 {
  display: flex;
  align-items: center;
  gap: 12px;
}

.strength-number {
  display: inline-grid;
  width: 30px;
  height: 30px;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 50%;
  background: #252525;
  color: #fff;
  font-size: 14px;
  font-weight: 900;
  line-height: 1;
}

.strength-icon {
  width: 72px;
  height: 72px;
  color: #c9c4bd;
}

.strength-icon path {
  fill: none;
  stroke: currentColor;
  stroke-width: 3;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.process {
  background: #f7f6f3;
}

.timeline {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 56px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.timeline li {
  position: relative;
  min-height: 230px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.timeline li:not(:last-child)::after {
  content: "\279C";
  position: absolute;
  top: 50%;
  right: -56px;
  z-index: 2;
  width: 56px;
  color: var(--cyan);
  font-size: 32px;
  font-weight: 900;
  line-height: 1;
  text-align: center;
  opacity: 0.9;
  transform: translateY(-50%);
}

.timeline span {
  display: grid;
  width: 34px;
  height: 34px;
  margin-bottom: 42px;
  place-items: center;
  border: 1px solid rgba(245, 130, 32, 0.58);
  color: var(--cyan);
  font-weight: 900;
}

.footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  border-top: 1px solid var(--line);
  background: #ffffff;
}

.contact-copy {
  max-width: 720px;
}

.footer h2 {
  margin-bottom: 10px;
  font-size: clamp(26px, 3.2vw, 42px);
}

.qr-card {
  display: grid;
  grid-template-columns: 154px minmax(120px, 1fr);
  align-items: center;
  gap: 18px;
  min-width: 340px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.03));
  box-shadow: var(--shadow);
}

.qr-card img {
  display: block;
  width: 154px;
  height: 154px;
  border-radius: 6px;
  object-fit: cover;
  background: #fff;
}

.qr-card strong {
  display: block;
  margin-bottom: 6px;
  color: var(--text);
  font-size: 20px;
}

.qr-card span {
  color: var(--muted);
  font-size: 14px;
}

@media (max-width: 920px) {
  .site-header {
    position: sticky;
    flex-direction: column;
    align-items: flex-start;
    padding-block: 16px;
  }

  .brand {
    font-size: 14px;
  }

  .nav {
    width: 100%;
    gap: 0;
    justify-content: space-between;
    overflow-x: auto;
  }

  .hero {
    min-height: auto;
    padding-top: 72px;
  }

  .hero-shade {
    background:
      linear-gradient(180deg, rgba(247, 246, 243, 0.94), rgba(247, 246, 243, 0.76), var(--bg)),
      linear-gradient(90deg, rgba(247, 246, 243, 0.9), rgba(247, 246, 243, 0.28));
  }

  .intro,
  .about-founder,
  .band {
    grid-template-columns: 1fr;
  }

  .product-grid,
  .case-grid,
  .timeline {
    grid-template-columns: 1fr;
  }

  .timeline li:not(:last-child)::after {
    content: "\2193";
    top: auto;
    right: 50%;
    bottom: -42px;
    width: 56px;
    transform: translate(50%, 0);
  }

  .product-card,
  .timeline li {
    min-height: auto;
  }

  .card-index,
  .timeline span {
    margin-bottom: 26px;
  }

  .footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .qr-card {
    width: 100%;
    min-width: 0;
  }
}

@media (max-width: 560px) {
  .site-header {
    min-height: 0;
  }

  .brand span:last-child {
    white-space: normal;
  }

  .nav {
    font-size: 13px;
  }

  .hero,
  .section,
  .band,
  .footer {
    padding-inline: 18px;
  }

  .hero {
    padding-bottom: 54px;
  }

  h1 {
    font-size: 44px;
  }

  .single-line-title {
    white-space: normal;
  }

  .hero-copy {
    font-size: 16px;
  }

  .hero-actions .button {
    width: 100%;
  }

  .qr-card {
    grid-template-columns: 1fr;
  }

  .qr-card img {
    width: min(100%, 260px);
    height: auto;
    aspect-ratio: 1;
  }
}