/* ==========================================================================
   成都乾渊供应链管理有限公司 · 官网样式
   品牌色：#F07C22（乾渊橙） / #1B1D21（深钢灰）
   ========================================================================== */

:root {
  --orange: #f07c22;
  --orange-deep: #d9670f;
  --orange-soft: #fff3e9;
  --ink: #1b1d21;
  --ink-2: #2b2f36;
  --gray-9: #3d424b;
  --gray-7: #5c636e;
  --gray-5: #8a9099;
  --gray-3: #c9cdd3;
  --gray-2: #e6e8eb;
  --gray-1: #f4f5f7;
  --paper: #ffffff;
  --wrap: 1200px;
  --radius: 14px;
  --radius-lg: 22px;
  --shadow-sm: 0 1px 2px rgba(27, 29, 33, .05), 0 6px 18px -8px rgba(27, 29, 33, .12);
  --shadow-md: 0 2px 6px rgba(27, 29, 33, .06), 0 18px 40px -18px rgba(27, 29, 33, .22);
  --shadow-lg: 0 30px 70px -30px rgba(27, 29, 33, .35);
  --ease: cubic-bezier(.22, .61, .36, 1);
  --font: "PingFang SC", "HarmonyOS Sans SC", "MiSans", "Microsoft YaHei",
          "Source Han Sans SC", "Noto Sans SC", system-ui, -apple-system, sans-serif;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 78px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--gray-9);
  background: var(--paper);
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
/* <picture> must not create its own box, otherwise `height: 100%` on the
   inner <img> resolves against an auto-height wrapper and the fill/crop
   layouts (hero, product, service and deep-dive media) collapse. */
picture { display: contents; }

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

h1, h2, h3, h4 {
  margin: 0;
  color: var(--ink);
  line-height: 1.28;
  font-weight: 700;
  letter-spacing: -.01em;
}

p { margin: 0; }

ul, ol { margin: 0; padding: 0; list-style: none; }

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: 24px;
}

.skip-link {
  position: fixed;
  top: -100px;
  left: 16px;
  z-index: 999;
  padding: 10px 18px;
  background: var(--ink);
  color: #fff;
  border-radius: 8px;
  transition: top .2s;
}
.skip-link:focus { top: 12px; }

/* ============================ HEADER ============================ */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  border-bottom: 1px solid transparent;
  transition: background .35s var(--ease), box-shadow .35s var(--ease),
              border-color .35s var(--ease);
}

.site-header.scrolled {
  background: rgba(255, 255, 255, .94);
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  border-bottom-color: var(--gray-2);
  box-shadow: 0 8px 28px -20px rgba(27, 29, 33, .5);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 28px;
  height: 78px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: none;
}
.brand-mark { display: flex; flex: none; }
.brand-mark svg { display: block; border-radius: 10px; }

.brand-text { display: flex; flex-direction: column; line-height: 1.16; }
.brand-text strong {
  font-size: 18px;
  font-weight: 800;
  color: #fff;
  letter-spacing: .04em;
  transition: color .35s;
}
.brand-text em {
  font-style: normal;
  font-size: 9.5px;
  letter-spacing: .18em;
  color: rgba(255, 255, 255, .62);
  transition: color .35s;
}
.site-header.scrolled .brand-text strong { color: var(--ink); }
.site-header.scrolled .brand-text em { color: var(--gray-5); }

.nav {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}
.nav a {
  position: relative;
  padding: 9px 15px;
  font-size: 15px;
  font-weight: 500;
  color: rgba(255, 255, 255, .9);
  border-radius: 9px;
  transition: color .25s, background .25s;
}
.nav a::after {
  content: "";
  position: absolute;
  left: 15px;
  right: 15px;
  bottom: 4px;
  height: 2px;
  border-radius: 2px;
  background: var(--orange);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .3s var(--ease);
}
.nav a:hover { color: #fff; }
.nav a:hover::after,
.nav a.active::after { transform: scaleX(1); }
.nav a.active { color: #fff; }

/* 手机端才有：菜单内的拨号入口 */
.nav-tel { display: none; }

.site-header.scrolled .nav a { color: var(--gray-7); }
.site-header.scrolled .nav a:hover,
.site-header.scrolled .nav a.active { color: var(--ink); }

.header-tel {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex: none;
  padding: 10px 18px;
  font-size: 15px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: #fff;
  background: var(--orange);
  border-radius: 100px;
  box-shadow: 0 8px 22px -10px rgba(240, 124, 34, .85);
  transition: background .25s, transform .25s, box-shadow .25s;
}
.header-tel:hover {
  background: var(--orange-deep);
  transform: translateY(-1px);
  box-shadow: 0 12px 26px -10px rgba(240, 124, 34, .95);
}
.header-tel svg { flex: none; }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0 11px;
  border: 0;
  border-radius: 10px;
  background: rgba(255, 255, 255, .14);
  cursor: pointer;
  transition: background .25s;
}
.nav-toggle span {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: #fff;
  transition: transform .3s var(--ease), opacity .2s;
}
.site-header.scrolled .nav-toggle { background: var(--gray-1); }
.site-header.scrolled .nav-toggle span { background: var(--ink); }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================ HERO ============================ */
.hero {
  position: relative;
  display: flex;
  align-items: center;
  min-height: clamp(600px, 92vh, 900px);
  padding: 130px 0 78px;
  overflow: hidden;
  isolation: isolate;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: -2;
}
.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 62% 42%;
  animation: heroZoom 22s var(--ease) forwards;
}
@keyframes heroZoom {
  from { transform: scale(1.12); }
  to { transform: scale(1); }
}

.hero-veil {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(100deg, rgba(15, 17, 20, .93) 0%, rgba(15, 17, 20, .80) 42%, rgba(15, 17, 20, .40) 72%, rgba(15, 17, 20, .28) 100%),
    linear-gradient(0deg, rgba(15, 17, 20, .55) 0%, transparent 42%);
}

.hero-inner { position: relative; }

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 26px;
  padding: 7px 17px 7px 13px;
  font-size: 13.5px;
  letter-spacing: .07em;
  color: rgba(255, 255, 255, .82);
  background: rgba(255, 255, 255, .09);
  border: 1px solid rgba(255, 255, 255, .16);
  border-radius: 100px;
  backdrop-filter: blur(6px);
}
.hero-eyebrow .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--orange);
  box-shadow: 0 0 0 4px rgba(240, 124, 34, .22);
}

.hero-title {
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-width: 20em;
  color: #fff;
}
.hero-title .l1 {
  font-size: clamp(30px, 4.6vw, 62px);
  font-weight: 800;
  letter-spacing: .005em;
  color: #fff;
}
.hero-title .l2 {
  font-size: clamp(17px, 2.1vw, 26px);
  font-weight: 500;
  letter-spacing: .03em;
  color: var(--orange);
}

.hero-sub {
  margin-top: 26px;
  padding-left: 16px;
  font-size: clamp(15px, 1.5vw, 18.5px);
  font-weight: 600;
  letter-spacing: .06em;
  color: #fff;
  border-left: 3px solid var(--orange);
}

.hero-desc {
  max-width: 42em;
  margin-top: 18px;
  font-size: clamp(14.5px, 1.2vw, 16.5px);
  line-height: 1.85;
  color: rgba(255, 255, 255, .74);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 38px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 15px 32px;
  font-size: 16px;
  font-weight: 700;
  border-radius: 100px;
  transition: transform .25s var(--ease), background .25s, color .25s,
              box-shadow .25s, border-color .25s;
}
.btn-primary {
  color: #fff;
  background: var(--orange);
  box-shadow: 0 16px 34px -16px rgba(240, 124, 34, .95);
}
.btn-primary:hover {
  background: var(--orange-deep);
  transform: translateY(-2px);
  box-shadow: 0 20px 40px -16px rgba(240, 124, 34, 1);
}
.btn-ghost {
  color: #fff;
  border: 1.5px solid rgba(255, 255, 255, .34);
  background: rgba(255, 255, 255, .05);
  backdrop-filter: blur(4px);
}
.btn-ghost:hover {
  background: rgba(255, 255, 255, .14);
  border-color: rgba(255, 255, 255, .62);
  transform: translateY(-2px);
}

.hero-scroll {
  position: absolute;
  left: 50%;
  bottom: 26px;
  z-index: 2;
  width: 26px;
  height: 42px;
  border: 1.5px solid rgba(255, 255, 255, .35);
  border-radius: 100px;
  transform: translateX(-50%);
}
.hero-scroll span {
  position: absolute;
  top: 8px;
  left: 50%;
  width: 4px;
  height: 8px;
  margin-left: -2px;
  border-radius: 2px;
  background: rgba(255, 255, 255, .9);
  animation: scrollDot 1.9s var(--ease) infinite;
}
@keyframes scrollDot {
  0% { opacity: 0; transform: translateY(0); }
  35% { opacity: 1; }
  80%, 100% { opacity: 0; transform: translateY(15px); }
}

/* ============================ STATS ============================ */
.stats {
  position: relative;
  z-index: 3;
  margin-top: -58px;
  padding-bottom: 4px;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  overflow: hidden;
  background: var(--paper);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: 34px 10px;
}
.stat {
  position: relative;
  text-align: center;
  padding: 4px 14px;
}
.stat + .stat::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8%;
  height: 84%;
  width: 1px;
  background: var(--gray-2);
}
.stat b {
  display: block;
  font-size: clamp(30px, 3.4vw, 42px);
  font-weight: 800;
  line-height: 1.1;
  color: var(--orange);
  font-variant-numeric: tabular-nums;
  letter-spacing: -.02em;
}
.stat span {
  display: block;
  margin-top: 8px;
  font-size: 14px;
  color: var(--gray-7);
  letter-spacing: .04em;
}

/* ============================ SECTION SHELL ============================ */
.section { padding: clamp(64px, 8vw, 116px) 0; }

.sec-head {
  max-width: 900px;
  margin-bottom: clamp(38px, 4.6vw, 62px);
}
.sec-head-center {
  margin-inline: auto;
  text-align: center;
}
.sec-head-center .sec-lead { margin-inline: auto; }

.sec-num {
  display: inline-block;
  margin-bottom: 12px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .22em;
  color: var(--orange);
  text-transform: uppercase;
}

.sec-title {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0 14px;
  font-size: clamp(26px, 3.2vw, 40px);
  font-weight: 800;
  letter-spacing: -.5px;
}
.sec-title em {
  font-style: normal;
  font-size: clamp(12px, 1.1vw, 15px);
  font-weight: 600;
  letter-spacing: .16em;
  color: var(--gray-3);
  text-transform: uppercase;
}

.sec-lead {
  max-width: 64em;
  margin-top: 18px;
  font-size: clamp(15px, 1.3vw, 16.5px);
  line-height: 1.85;
  color: var(--gray-7);
}

.sec-head-light .sec-title { color: #fff; }
.sec-head-light .sec-title em { color: rgba(255, 255, 255, .42); }
.sec-head-light .sec-lead { color: rgba(255, 255, 255, .74); }
.sec-head-light .sec-num { color: var(--orange); }

.sub-head {
  max-width: 900px;
  margin: clamp(56px, 6vw, 84px) 0 34px;
}
.sub-head-tight { margin-top: clamp(48px, 5vw, 70px); }
.sub-head h3 {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px;
  font-size: clamp(21px, 2.2vw, 27px);
  font-weight: 800;
}
.sub-head h3 em {
  font-style: normal;
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: .18em;
  color: var(--gray-3);
}
.sub-head p {
  margin-top: 12px;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--gray-7);
}

/* ============================ ABOUT ============================ */
.section-about { background: var(--paper); }

.about-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.about-card {
  position: relative;
  padding: 36px 32px 34px;
  background: var(--gray-1);
  border: 1px solid var(--gray-2);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform .35s var(--ease), box-shadow .35s var(--ease),
              background .35s, border-color .35s;
}
.about-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: linear-gradient(90deg, var(--orange), rgba(240, 124, 34, 0));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .45s var(--ease);
}
.about-card:hover {
  transform: translateY(-4px);
  background: var(--paper);
  border-color: transparent;
  box-shadow: var(--shadow-md);
}
.about-card:hover::before { transform: scaleX(1); }

.about-icon {
  width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  margin-bottom: 22px;
  color: var(--orange);
  background: var(--orange-soft);
  border-radius: 14px;
  transition: background .35s, color .35s;
}
.about-icon svg { width: 27px; height: 27px; }
.about-card:hover .about-icon { background: var(--orange); color: #fff; }

.about-card h3 {
  font-size: 19.5px;
  font-weight: 700;
  margin-bottom: 12px;
}
.about-card p {
  font-size: 15px;
  line-height: 1.85;
  color: var(--gray-7);
}

/* 服务流程 */
.process {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 14px;
  counter-reset: step;
}
.process li {
  position: relative;
  padding: 26px 20px 24px;
  background: var(--paper);
  border: 1px solid var(--gray-2);
  border-radius: var(--radius);
  transition: transform .3s var(--ease), border-color .3s, box-shadow .3s;
}
.process li::after {
  content: "";
  position: absolute;
  top: 44px;
  right: -14px;
  width: 14px;
  height: 2px;
  background: var(--gray-2);
  transition: background .3s;
}
.process li:last-child::after { display: none; }
.process li:hover {
  transform: translateY(-4px);
  border-color: rgba(240, 124, 34, .45);
  box-shadow: var(--shadow-sm);
}
.process li:hover::after { background: var(--orange); }

.p-num {
  display: inline-block;
  margin-bottom: 12px;
  font-size: 26px;
  font-weight: 800;
  line-height: 1;
  color: var(--gray-2);
  font-variant-numeric: tabular-nums;
  letter-spacing: -.03em;
  transition: color .3s;
}
.process li:hover .p-num { color: var(--orange); }
.process h4 {
  font-size: 16.5px;
  font-weight: 700;
  margin-bottom: 8px;
}
.process p {
  font-size: 13.8px;
  line-height: 1.75;
  color: var(--gray-7);
}

/* ============================ PARTNERS ============================ */
.section-partners {
  background:
    radial-gradient(900px 400px at 50% -10%, rgba(240, 124, 34, .05), transparent 70%),
    var(--gray-1);
  border-block: 1px solid var(--gray-2);
}

.partners {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.partners li {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 24px 26px;
  background: var(--paper);
  border: 1px solid var(--gray-2);
  border-radius: var(--radius);
  transition: transform .3s var(--ease), box-shadow .3s, border-color .3s;
}
.partners li:hover {
  transform: translateY(-3px);
  border-color: transparent;
  box-shadow: var(--shadow-md);
}
.partners img {
  flex: none;
  width: 106px;
  height: 78px;
  object-fit: contain;
  object-position: center;
  /* 缩略图上做极轻微灰度，悬停恢复品牌色，避免六家 logo 抢视觉 */
  filter: grayscale(.55);
  opacity: .9;
  transition: filter .35s, opacity .35s;
}
.partners li:hover img { filter: none; opacity: 1; }
.partners h4 {
  font-size: 16.5px;
  font-weight: 700;
  margin-bottom: 5px;
}
.partners p {
  font-size: 13.6px;
  line-height: 1.7;
  color: var(--gray-7);
}

/* ============================ PRODUCTS ============================ */
.section-products { background: var(--paper); }

.products {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

.prod {
  position: relative;
  overflow: hidden;
  background: var(--paper);
  border: 1px solid var(--gray-2);
  border-radius: var(--radius-lg);
  transition: transform .35s var(--ease), box-shadow .35s, border-color .35s;
}
.prod:hover {
  transform: translateY(-5px);
  border-color: transparent;
  box-shadow: var(--shadow-md);
}

.prod-wide {
  grid-column: span 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
}

.prod-media {
  position: relative;
  overflow: hidden;
  background: var(--gray-1);
  aspect-ratio: 16 / 11;
}
.prod-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .7s var(--ease);
}
.prod:hover .prod-media img { transform: scale(1.06); }

.prod-wide .prod-media { aspect-ratio: auto; height: 100%; min-height: 300px; }

.prod-body {
  padding: 28px 26px 30px;
}
.prod-body h3 {
  font-size: 19px;
  font-weight: 700;
  margin-bottom: 11px;
}
.prod-body p {
  font-size: 14.4px;
  line-height: 1.82;
  color: var(--gray-7);
}

.prod-tag {
  display: inline-block;
  margin-bottom: 12px;
  padding: 3px 11px;
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--orange);
  background: var(--orange-soft);
  border-radius: 100px;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}
.chips li {
  padding: 5px 12px;
  font-size: 12.8px;
  color: var(--gray-7);
  background: var(--gray-1);
  border-radius: 100px;
  transition: background .25s, color .25s;
}
.prod:hover .chips li { background: var(--orange-soft); color: var(--orange-deep); }
.chips-dark li { background: rgba(255, 255, 255, .12); color: rgba(255, 255, 255, .85); }

.prod-text {
  display: flex;
  align-items: center;
  background: var(--ink);
  border-color: var(--ink);
}
.prod-text .prod-body h3 { color: #fff; }
.prod-text .prod-body p { color: rgba(255, 255, 255, .68); }

/* 不锈钢应用 */
.apps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}
.apps li {
  position: relative;
  padding: 28px 22px;
  background: var(--gray-1);
  border: 1px solid var(--gray-2);
  border-radius: var(--radius);
  transition: transform .3s var(--ease), background .3s, border-color .3s;
}
.apps li:hover {
  transform: translateY(-3px);
  background: var(--paper);
  border-color: rgba(240, 124, 34, .4);
  box-shadow: var(--shadow-sm);
}
.apps b {
  display: block;
  font-size: 16.5px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 8px;
}
.apps span {
  display: block;
  font-size: 13.6px;
  line-height: 1.72;
  color: var(--gray-7);
}

/* ============================ ADVANTAGES ============================ */
.section-adv {
  background:
    linear-gradient(180deg, var(--gray-1) 0%, var(--gray-1) 62%, var(--paper) 62%, var(--paper) 100%);
}

.adv-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.adv {
  position: relative;
  padding: 32px 30px 30px;
  background: var(--paper);
  border: 1px solid var(--gray-2);
  border-radius: var(--radius);
  transition: transform .35s var(--ease), box-shadow .35s, border-color .35s;
}
.adv:hover {
  transform: translateY(-4px);
  border-color: transparent;
  box-shadow: var(--shadow-md);
}

.adv-num {
  position: absolute;
  top: 22px;
  right: 26px;
  font-size: 42px;
  font-weight: 800;
  line-height: 1;
  color: var(--gray-1);
  letter-spacing: -.04em;
  font-variant-numeric: tabular-nums;
  pointer-events: none;
  transition: color .35s;
}
.adv:hover .adv-num { color: var(--orange-soft); }

.adv-icon {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  margin-bottom: 20px;
  color: var(--orange);
  background: var(--orange-soft);
  border-radius: 13px;
  transition: background .35s, color .35s;
}
.adv-icon svg { width: 25px; height: 25px; }
.adv:hover .adv-icon { background: var(--orange); color: #fff; }

.adv h3 {
  font-size: 18.5px;
  font-weight: 700;
  margin-bottom: 11px;
}
.adv p {
  font-size: 14.6px;
  line-height: 1.85;
  color: var(--gray-7);
}

.adv-wide { grid-column: span 3; }

.adv-wide-text {
  display: flex;
  align-items: flex-start;
  gap: 24px;
  max-width: 1000px;
}
.adv-wide-text .adv-icon { flex: none; margin-bottom: 0; }
.adv-wide .adv-num { font-size: 54px; top: 26px; }

/* 深度展开 */
.deep {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 0;
  margin-top: 24px;
  overflow: hidden;
  background: var(--ink);
  border-radius: var(--radius-lg);
}
.deep-rev { grid-template-columns: 1.15fr 0.85fr; }
.deep-rev .deep-media { order: 2; }
.deep-rev .deep-body { order: 1; }

.deep-media {
  position: relative;
  overflow: hidden;
  min-height: 380px;
}
.deep-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .9s var(--ease);
}
.deep:hover .deep-media img { transform: scale(1.05); }

.deep-body {
  padding: clamp(34px, 4vw, 56px);
  color: rgba(255, 255, 255, .74);
}
.deep-kicker {
  margin-bottom: 14px;
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: .2em;
  color: var(--orange);
}
.deep-body h3 {
  font-size: clamp(23px, 2.4vw, 31px);
  font-weight: 800;
  color: #fff;
  margin-bottom: 10px;
}
.deep-tagline {
  margin-bottom: 20px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .06em;
  color: var(--orange);
}
.deep-body > p:not(.deep-kicker):not(.deep-tagline) {
  font-size: 15px;
  line-height: 1.85;
  color: rgba(255, 255, 255, .68);
}

.deep-list {
  display: grid;
  gap: 1px;
  margin-top: 28px;
  background: rgba(255, 255, 255, .1);
  border-radius: 12px;
  overflow: hidden;
}
.deep-list-3 { grid-template-columns: repeat(3, 1fr); }
.deep-list li {
  padding: 20px 22px;
  background: rgba(255, 255, 255, .035);
  transition: background .3s;
}
.deep-list li:hover { background: rgba(255, 255, 255, .075); }
.deep-list li::before {
  content: "";
  display: block;
  width: 22px;
  height: 3px;
  margin-bottom: 12px;
  border-radius: 2px;
  background: var(--orange);
}
.deep-list b {
  display: block;
  font-size: 15.5px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 7px;
}
.deep-list span {
  display: block;
  font-size: 13.6px;
  line-height: 1.75;
  color: rgba(255, 255, 255, .62);
}

/* ============================ SERVICES ============================ */
.section-services { background: var(--paper); }

.services-grid {
  display: grid;
  grid-template-columns: 0.92fr 1.08fr;
  gap: 32px;
  align-items: center;
}

.svc-photo {
  position: relative;
  margin: 0;
  overflow: hidden;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  aspect-ratio: 4 / 3.1;
}
.svc-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .9s var(--ease);
}
.svc-photo:hover img { transform: scale(1.04); }

.svc-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}
.svc-list li {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 20px 16px;
  background: var(--gray-1);
  border: 1px solid var(--gray-2);
  border-radius: 12px;
  transition: transform .28s var(--ease), background .28s,
              border-color .28s, box-shadow .28s;
}
.svc-list li:hover {
  transform: translateY(-3px);
  background: var(--paper);
  border-color: rgba(240, 124, 34, .5);
  box-shadow: var(--shadow-sm);
}
.svc-ico {
  flex: none;
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  color: var(--orange);
  background: var(--orange-soft);
  border-radius: 9px;
  transition: background .28s, color .28s;
}
.svc-ico svg { width: 19px; height: 19px; }
.svc-list li:hover .svc-ico { background: var(--orange); color: #fff; }
.svc-list b {
  font-size: 14.6px;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.35;
}

/* ============================ VALUES ============================ */
.section-values {
  background: var(--gray-1);
  border-block: 1px solid var(--gray-2);
}

.values {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.val {
  padding: 30px 26px;
  text-align: center;
  background: var(--paper);
  border: 1px solid var(--gray-2);
  border-radius: var(--radius);
  transition: transform .32s var(--ease), box-shadow .32s, border-color .32s;
}
.val:hover {
  transform: translateY(-4px);
  border-color: transparent;
  box-shadow: var(--shadow-md);
}
.val-ico {
  display: inline-grid;
  place-items: center;
  width: 54px;
  height: 54px;
  margin-bottom: 18px;
  color: var(--orange);
  background: var(--orange-soft);
  border-radius: 50%;
  transition: background .32s, color .32s;
}
.val-ico svg { width: 27px; height: 27px; }
.val:hover .val-ico { background: var(--orange); color: #fff; }
.val h3 {
  font-size: 17.5px;
  font-weight: 700;
  margin-bottom: 10px;
}
.val p {
  font-size: 14.2px;
  line-height: 1.8;
  color: var(--gray-7);
}

/* ============================ CONTACT ============================ */
.section-contact {
  position: relative;
  padding: clamp(70px, 9vw, 128px) 0;
  overflow: hidden;
  isolation: isolate;
}
.contact-bg {
  position: absolute;
  inset: 0;
  z-index: -2;
}
.contact-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 60%;
}
.contact-veil {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(110deg, rgba(15, 17, 20, .95) 0%, rgba(15, 17, 20, .86) 48%, rgba(15, 17, 20, .62) 100%);
}

.contact-inner { position: relative; }

.contact-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 46px;
}

.cc {
  position: relative;
  padding: 30px 28px;
  background: rgba(255, 255, 255, .06);
  border: 1px solid rgba(255, 255, 255, .14);
  border-radius: var(--radius);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: background .3s, transform .3s var(--ease), border-color .3s;
}
.cc-link:hover {
  background: rgba(255, 255, 255, .12);
  border-color: rgba(240, 124, 34, .6);
  transform: translateY(-3px);
}
.cc-ico {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  margin-bottom: 16px;
  color: var(--orange);
  background: rgba(240, 124, 34, .16);
  border-radius: 11px;
}
.cc-ico svg { width: 21px; height: 21px; }
.cc h3 {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .08em;
  color: rgba(255, 255, 255, .6);
  margin-bottom: 9px;
}
.cc p {
  font-size: 17px;
  font-weight: 600;
  line-height: 1.6;
  color: #fff;
}
.cc-tel {
  font-size: clamp(21px, 2.2vw, 26px) !important;
  font-weight: 700 !important;
  font-variant-numeric: tabular-nums;
  letter-spacing: .02em;
  color: var(--orange) !important;
}
.cc-cta {
  display: inline-block;
  margin-top: 14px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .06em;
  color: rgba(255, 255, 255, .45);
  transition: color .25s, transform .25s;
}
.cc-link:hover .cc-cta { color: var(--orange); transform: translateX(3px); }

.contact-note {
  margin-top: 42px;
  font-size: 14px;
  letter-spacing: .12em;
  color: rgba(255, 255, 255, .42);
}

/* ============================ FOOTER ============================ */
.site-footer {
  padding: 58px 0 26px;
  background: #14161a;
  color: rgba(255, 255, 255, .6);
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 38px;
  border-bottom: 1px solid rgba(255, 255, 255, .1);
}

.footer-brand {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}
.footer-brand strong {
  display: block;
  font-size: 16.5px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}
.footer-brand p {
  font-size: 13.8px;
  line-height: 1.75;
  color: rgba(255, 255, 255, .48);
}

.footer-nav {
  display: flex;
  flex-direction: column;
  gap: 11px;
}
.footer-nav a {
  font-size: 14.6px;
  color: rgba(255, 255, 255, .62);
  transition: color .25s, transform .25s;
  width: fit-content;
}
.footer-nav a:hover { color: var(--orange); transform: translateX(3px); }

.footer-contact p {
  font-size: 14.4px;
  line-height: 1.9;
  color: rgba(255, 255, 255, .55);
}
.footer-contact a {
  color: #fff;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  transition: color .25s;
}
.footer-contact a:hover { color: var(--orange); }

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  padding-top: 24px;
  font-size: 13.2px;
  color: rgba(255, 255, 255, .38);
}
.icp a { transition: color .25s; }
.icp a:hover { color: rgba(255, 255, 255, .7); }

/* ============================ TO TOP ============================ */
.to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 90;
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  color: #fff;
  background: var(--ink);
  border: 0;
  border-radius: 50%;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  box-shadow: var(--shadow-md);
  transition: opacity .3s, visibility .3s, transform .3s var(--ease), background .25s;
}
.to-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
.to-top:hover { background: var(--orange); }

/* ============================ REVEAL ============================ */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .7s var(--ease), transform .7s var(--ease);
}
.reveal.in { opacity: 1; transform: none; }

/* ============================ RESPONSIVE ============================ */
@media (max-width: 1100px) {
  .process { grid-template-columns: repeat(3, 1fr); }
  .process li::after { display: none; }
  .adv-grid { grid-template-columns: repeat(2, 1fr); }
  .adv-wide { grid-column: span 2; }
  .products { grid-template-columns: repeat(2, 1fr); }
  .apps { grid-template-columns: repeat(3, 1fr); }
  .values { grid-template-columns: repeat(2, 1fr); }
  .partners { grid-template-columns: repeat(2, 1fr); }
  .deep, .deep-rev { grid-template-columns: 1fr; }
  .deep-rev .deep-media { order: 0; }
  .deep-rev .deep-body { order: 0; }
  .deep-media { min-height: 300px; max-height: 380px; }
  .services-grid { grid-template-columns: 1fr; }
  .svc-photo { aspect-ratio: 16 / 9; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: span 2; }
}

@media (max-width: 860px) {
  html { scroll-padding-top: 68px; }

  .header-inner { height: 68px; }
  .nav-toggle { display: flex; margin-left: auto; }
  .header-tel { display: none; }

  .nav {
    position: fixed;
    inset: 68px 0 auto 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    margin: 0;
    padding: 10px 20px 22px;
    background: rgba(255, 255, 255, .98);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--gray-2);
    box-shadow: 0 22px 40px -28px rgba(0, 0, 0, .6);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity .3s var(--ease), visibility .3s, transform .3s var(--ease);
  }
  .nav.open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }
  .nav a {
    padding: 14px 6px;
    font-size: 16px;
    color: var(--gray-9) !important;
    border-bottom: 1px solid var(--gray-1);
    border-radius: 0;
  }
  .nav a:last-child { border-bottom: 0; }
  .nav a::after { left: 6px; right: auto; width: 22px; bottom: 8px; }
  .nav a.active { color: var(--orange) !important; }

  /* 菜单底部的拨号按钮（提高选择器权重，避免被 .nav a 的直角样式覆盖） */
  .nav .nav-tel {
    display: flex !important;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 14px;
    padding: 14px 18px !important;
    font-weight: 700;
    color: #fff !important;
    background: var(--orange);
    border: 0 !important;
    border-radius: 100px;
    font-variant-numeric: tabular-nums;
  }
  .nav .nav-tel::after { display: none !important; }
  .nav .nav-tel svg { flex: none; }

  .hero { min-height: 88vh; padding: 112px 0 70px; }
  .hero-desc { font-size: 14.5px; }
  .hero-scroll { display: none; }

  .stats { margin-top: -40px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 26px 0; padding: 26px 8px; }
  .stat:nth-child(3)::before { display: none; }
  .stat + .stat::before { top: 4%; height: 92%; }
  .stat b { font-size: 30px; }
  .stat span { font-size: 13px; }

  .about-grid { grid-template-columns: 1fr; }
  .process { grid-template-columns: repeat(2, 1fr); }
  .adv-grid { grid-template-columns: 1fr; }
  .adv-wide { grid-column: span 1; }
  .adv-wide-text { flex-direction: column; gap: 18px; }
  .products { grid-template-columns: 1fr; }
  .prod-wide { grid-column: span 1; grid-template-columns: 1fr; }
  .prod-wide .prod-media { min-height: 0; aspect-ratio: 16 / 10; }
  .apps { grid-template-columns: repeat(2, 1fr); }
  .values { grid-template-columns: 1fr; }
  .partners { grid-template-columns: 1fr; }
  .partners li { padding: 20px; }
  .svc-list { grid-template-columns: repeat(2, 1fr); }
  .deep-list-3 { grid-template-columns: 1fr; }
  .contact-cards { grid-template-columns: 1fr; margin-top: 34px; }
  .footer-inner { grid-template-columns: 1fr; gap: 30px; }
  .footer-brand { grid-column: span 1; }
  .footer-bottom { flex-direction: column; }
  .to-top { right: 16px; bottom: 16px; width: 42px; height: 42px; }
}

@media (max-width: 480px) {
  .wrap { padding-inline: 18px; }
  .process { grid-template-columns: 1fr; }
  .apps { grid-template-columns: 1fr; }
  .svc-list { grid-template-columns: 1fr; }
  .hero-title .l1 { font-size: 27px; }
  .hero-actions { gap: 10px; }
  .btn { padding: 13px 24px; font-size: 15px; }
  .hero-eyebrow { font-size: 12px; padding: 6px 13px 6px 10px; }
  .brand-text strong { font-size: 16px; }
  .brand-text em { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}

@media print {
  .site-header, .to-top, .nav-toggle, .hero-scroll, .hero-actions { display: none !important; }
  .hero { min-height: auto; padding: 24px 0; background: #fff; color: #000; }
  .hero-veil, .hero-bg { display: none; }
  .hero-title .l1, .hero-title .l2, .hero-sub { color: #000; }
  .reveal { opacity: 1; transform: none; }
}