/* ============================================================
   环芯云软件科技工作室 — 官网样式
   视觉方向：墨色深空 + 铜金「芯」核，衬线标题 + 等宽点缀
   ============================================================ */

:root {
  --ink:      #0A0E13;   /* 底色：深墨 */
  --ink-2:    #0D131A;
  --panel:    #101823;
  --panel-2:  #131D2A;
  --line:     rgba(232, 166, 75, .16);
  --line-soft:rgba(255, 255, 255, .07);
  --gold:     #E2A64B;   /* 主强调：铜金 */
  --gold-hi:  #F5C56B;
  --teal:     #3ECFB2;   /* 次强调：青 */
  --text:     #E9EEF4;
  --muted:    #93A1B0;
  --dim:      #5E6B78;

  --serif: "Noto Serif SC", "Songti SC", "SimSun", serif;
  --sans:  "PingFang SC", "Microsoft YaHei", "Segoe UI", system-ui, sans-serif;
  --mono:  "JetBrains Mono", "Cascadia Code", Consolas, monospace;

  --maxw: 1160px;
  --radius: 14px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background: var(--ink);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* 全局颗粒噪点 */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 999;
  opacity: .05;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='120' height='120' filter='url(%23n)' opacity='1'/%3E%3C/svg%3E");
}

::selection { background: var(--gold); color: var(--ink); }

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

.mono { font-family: var(--mono); letter-spacing: .04em; }

/* ---------- 通用区块 ---------- */
.section {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 110px 32px;
}
.section-alt { max-width: none; }
.section-alt > * { max-width: var(--maxw); margin-left: auto; margin-right: auto; }

.section-head { margin-bottom: 56px; }

.eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .32em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 18px;
}
.eyebrow i { font-style: normal; color: var(--dim); }

.section-head h2, .contact-card h2 {
  font-family: var(--serif);
  font-weight: 900;
  font-size: clamp(30px, 4.4vw, 44px);
  letter-spacing: .02em;
  line-height: 1.25;
}
.section-sub { color: var(--muted); margin-top: 14px; max-width: 560px; }

/* ---------- 导航 ---------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  transition: background .35s, border-color .35s, backdrop-filter .35s;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(10, 14, 19, .78);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom-color: var(--line-soft);
}
.nav-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 32px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark svg { width: 34px; height: 34px; }
.brand-mark rect { fill: var(--gold); }
.brand-mark circle { fill: none; stroke: var(--ink); stroke-width: 6; }
.brand-mark circle:last-of-type { fill: var(--ink); stroke: none; }
.brand-text {
  font-family: var(--serif);
  font-weight: 900;
  font-size: 20px;
  letter-spacing: .12em;
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}
.brand-text small {
  font-family: var(--mono);
  font-weight: 400;
  font-size: 9px;
  letter-spacing: .42em;
  color: var(--dim);
}

.nav-links { display: flex; align-items: center; gap: 34px; }
.nav-links a {
  font-size: 14.5px;
  color: var(--muted);
  letter-spacing: .08em;
  position: relative;
  transition: color .25s;
}
.nav-links a:hover { color: var(--text); }
.nav-links a:not(.nav-cta)::after {
  content: "";
  position: absolute;
  left: 0; bottom: -6px;
  width: 0; height: 1px;
  background: var(--gold);
  transition: width .3s;
}
.nav-links a:not(.nav-cta):hover::after { width: 100%; }
.nav-cta {
  color: var(--gold) !important;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px 18px;
  transition: background .25s, border-color .25s;
}
.nav-cta:hover { background: rgba(226,166,75,.1); border-color: var(--gold); }

.nav-burger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 40px; height: 40px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}
.nav-burger span {
  display: block;
  width: 20px; height: 1.5px;
  background: var(--text);
  transition: transform .3s, opacity .3s;
}
.nav.open .nav-burger span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav.open .nav-burger span:nth-child(2) { opacity: 0; }
.nav.open .nav-burger span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* ---------- 首屏 ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 140px 32px 0;
  overflow: hidden;
}

/* 背景网格 + 电路走线光 */
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--line-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-soft) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(ellipse 90% 70% at 60% 40%, #000 20%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 60% 40%, #000 20%, transparent 70%);
  opacity: .5;
}
.hero::before {
  content: "";
  position: absolute;
  width: 720px; height: 720px;
  right: -160px; top: -80px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(226,166,75,.13) 0%, transparent 62%);
  filter: blur(10px);
  animation: breathe 7s ease-in-out infinite;
}
@keyframes breathe {
  0%, 100% { opacity: .8; transform: scale(1); }
  50%      { opacity: 1;  transform: scale(1.06); }
}

.hero-inner {
  position: relative;
  max-width: var(--maxw);
  width: 100%;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  align-items: center;
  gap: 48px;
}

.eyebrow { color: var(--gold); }
.hero-copy .eyebrow { margin-bottom: 26px; }

.hero h1 {
  font-family: var(--serif);
  font-weight: 900;
  font-size: clamp(38px, 5.6vw, 64px);
  line-height: 1.22;
  letter-spacing: .01em;
}
.hero h1 .accent {
  color: var(--gold);
  position: relative;
  padding: 0 .06em;
}
.hero h1 .underline {
  background: linear-gradient(transparent 68%, rgba(226,166,75,.38) 68%);
}

.hero-sub {
  color: var(--muted);
  font-size: 17px;
  max-width: 520px;
  margin-top: 26px;
}
.hero-sub b { color: var(--text); font-weight: 600; }

.hero-cta { display: flex; gap: 16px; margin-top: 40px; flex-wrap: wrap; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  letter-spacing: .1em;
  padding: 14px 30px;
  border-radius: 999px;
  transition: transform .25s, box-shadow .25s, background .25s, border-color .25s;
}
.btn-solid {
  background: var(--gold);
  color: var(--ink);
  font-weight: 700;
}
.btn-solid:hover {
  background: var(--gold-hi);
  transform: translateY(-2px);
  box-shadow: 0 12px 32px -8px rgba(226,166,75,.45);
}
.btn-ghost {
  border: 1px solid var(--line);
  color: var(--text);
}
.btn-ghost:hover { border-color: var(--gold); color: var(--gold); transform: translateY(-2px); }
.btn-lg { padding: 18px 44px; font-size: 16px; }

.hero-points {
  list-style: none;
  display: flex;
  gap: 0;
  margin-top: 56px;
  border-top: 1px solid var(--line-soft);
}
.hero-points li {
  flex: 1;
  padding: 20px 18px 0 0;
  display: flex;
  flex-direction: column;
}
.hero-points li + li { padding-left: 22px; border-left: 1px solid var(--line-soft); }
.hero-points b { font-size: 15px; letter-spacing: .04em; }
.hero-points span { font-size: 12.5px; color: var(--dim); font-family: var(--mono); margin-top: 4px; }

/* 芯核视觉 */
.hero-visual { display: flex; justify-content: center; }
.core {
  position: relative;
  width: min(420px, 82vw);
  aspect-ratio: 1;
  display: grid;
  place-items: center;
}
.ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid var(--line);
}
.ring.r1 {
  inset: 0;
  border-style: dashed;
  animation: spin 46s linear infinite;
}
.ring.r2 {
  inset: 11%;
  border-color: rgba(226,166,75,.3);
  animation: spin 30s linear infinite reverse;
}
.ring.r2::before {
  content: "";
  position: absolute;
  top: -4px; left: 50%;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 14px 2px rgba(226,166,75,.7);
}
.ring.r3 {
  inset: 24%;
  border-color: rgba(62, 207, 178, .25);
  animation: spin 22s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.core-chip {
  position: relative;
  width: 46%;
  display: grid;
  place-items: center;
}
.core-chip svg { width: 100%; height: auto; overflow: visible; }
.pins line {
  stroke: rgba(226,166,75,.5);
  stroke-width: 2.5;
  stroke-linecap: round;
  animation: pinPulse 2.6s ease-in-out infinite;
}
.pins line:nth-child(4n+2) { animation-delay: .4s; }
.pins line:nth-child(4n+3) { animation-delay: .8s; }
.pins line:nth-child(4n+4) { animation-delay: 1.2s; }
@keyframes pinPulse {
  0%, 100% { opacity: .35; }
  50%      { opacity: 1; }
}
.chip-body {
  fill: var(--panel-2);
  stroke: var(--gold);
  stroke-width: 1.6;
  filter: drop-shadow(0 0 22px rgba(226,166,75,.35));
}
.chip-ring {
  fill: none;
  stroke: rgba(62,207,178,.55);
  stroke-width: 1.4;
  stroke-dasharray: 6 5;
  transform-origin: 60px 60px;
  animation: spin 12s linear infinite;
}
.chip-dot { fill: var(--gold); animation: pinPulse 2.6s ease-in-out infinite; }
.chip-han {
  position: absolute;
  font-family: var(--serif);
  font-weight: 900;
  font-size: clamp(30px, 3.4vw, 42px);
  color: var(--gold);
  pointer-events: none;
}

/* 环上节点 */
.node {
  position: absolute;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--teal);
  box-shadow: 0 0 10px 1px rgba(62,207,178,.8);
  animation: nodeBlink 3.2s ease-in-out infinite;
}
.node.n1 { top: 22%; right: 8%; }
.node.n2 { bottom: 14%; left: 16%; animation-delay: 1s; }
.node.n3 { top: 10%; left: 28%; animation-delay: 2s; background: var(--gold); box-shadow: 0 0 10px 1px rgba(226,166,75,.8); }
@keyframes nodeBlink {
  0%, 100% { opacity: .25; }
  50%      { opacity: 1; }
}

/* 底部滚动词条 */
.hero-strip {
  position: relative;
  margin-top: 90px;
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
  overflow: hidden;
  padding: 18px 0;
  mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
}
.strip-track {
  display: flex;
  gap: 28px;
  width: max-content;
  animation: marquee 26s linear infinite;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: .3em;
  color: var(--dim);
}
.strip-track i { font-style: normal; color: rgba(226,166,75,.5); }
.strip-track span { white-space: nowrap; }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- 服务 ---------- */
.svc-list {
  border-top: 1px solid var(--line-soft);
}
.svc {
  display: grid;
  grid-template-columns: 110px 1fr 60px;
  align-items: center;
  gap: 24px;
  padding: 38px 20px;
  border-bottom: 1px solid var(--line-soft);
  position: relative;
  transition: background .35s, padding-left .35s;
  cursor: default;
}
.svc::before {
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 2px;
  background: var(--gold);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform .35s;
}
.svc:hover {
  background: linear-gradient(90deg, rgba(226,166,75,.05), transparent 60%);
  padding-left: 32px;
}
.svc:hover::before { transform: scaleY(1); }

.svc-no {
  font-family: var(--mono);
  font-size: 15px;
  color: var(--dim);
  letter-spacing: .1em;
  transition: color .3s;
}
.svc:hover .svc-no { color: var(--gold); }

.svc-main h3 {
  font-family: var(--serif);
  font-size: 23px;
  font-weight: 700;
  letter-spacing: .04em;
  margin-bottom: 8px;
}
.svc-main p { color: var(--muted); font-size: 15px; max-width: 640px; }

.svc-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.svc-tags span {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: .08em;
  color: var(--muted);
  border: 1px solid var(--line-soft);
  border-radius: 999px;
  padding: 4px 12px;
  transition: border-color .3s, color .3s;
}
.svc:hover .svc-tags span { border-color: rgba(226,166,75,.3); color: var(--gold-hi); }

.svc-arrow {
  font-size: 22px;
  color: var(--dim);
  text-align: right;
  transition: transform .35s, color .35s;
}
.svc:hover .svc-arrow { color: var(--gold); transform: translateX(6px); }

/* ---------- 成品展示 ---------- */
.shots {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}
.shot {
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--panel);
  transition: transform .35s, border-color .35s, box-shadow .35s;
}
.shot:hover {
  transform: translateY(-6px);
  border-color: rgba(226,166,75,.35);
  box-shadow: 0 24px 48px -20px rgba(0,0,0,.6);
}

.shot-media {
  position: relative;
  aspect-ratio: 16 / 10;
  background: var(--ink-2);
  overflow: hidden;
}
.shot-media img {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .6s;
  cursor: zoom-in;
}
.shot:hover .shot-media img { transform: scale(1.04); }

/* ---------- 图片放大查看（点击成品截图） ---------- */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: grid;
  place-items: center;
  padding: 5vh 5vw;
  background: rgba(6, 9, 13, .9);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  opacity: 0;
  visibility: hidden;
  cursor: zoom-out;
  transition: opacity .3s, visibility .3s;
}
.lightbox.open { opacity: 1; visibility: visible; }
.lightbox img {
  max-width: 100%;
  max-height: 100%;
  border-radius: 8px;
  box-shadow: 0 40px 90px -30px rgba(0, 0, 0, .85);
  transform: scale(.95);
  transition: transform .3s;
}
.lightbox.open img { transform: scale(1); }

/* 截图占位（图片放入 images/ 后自动被真实截图覆盖） */
.shot-ph {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background:
    repeating-linear-gradient(45deg, transparent 0 14px, rgba(226,166,75,.03) 14px 28px);
  border: 1px dashed rgba(226,166,75,.28);
  margin: 14px;
  border-radius: 10px;
}
.shot-no {
  font-family: var(--mono);
  font-size: 34px;
  font-weight: 700;
  color: rgba(226,166,75,.35);
  letter-spacing: .1em;
}
.shot-tip {
  font-size: 13px;
  color: var(--dim);
  letter-spacing: .24em;
}
.shot-file {
  font-family: var(--mono);
  font-size: 11px;
  color: rgba(226,166,75,.4);
}

.shot figcaption {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 18px 20px;
  border-top: 1px solid var(--line-soft);
}
.shot figcaption b { font-size: 15px; letter-spacing: .05em; font-weight: 600; }
.shot figcaption span { font-family: var(--mono); font-size: 11.5px; color: var(--dim); letter-spacing: .1em; }

/* ---------- 关于 ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 64px;
  align-items: start;
}
.about-lead {
  font-family: var(--serif);
  font-size: 24px;
  font-weight: 700;
  letter-spacing: .04em;
  margin-bottom: 22px;
  color: var(--gold-hi);
}
.about-copy p { color: var(--muted); margin-bottom: 18px; }
.about-copy p b { color: var(--text); }
.about-scope {
  font-size: 13.5px !important;
  color: var(--dim) !important;
  border-left: 2px solid rgba(226,166,75,.4);
  padding-left: 14px;
}

.value-card {
  background: var(--panel);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  padding: 34px 34px 14px;
  position: relative;
  overflow: hidden;
}
.value-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--gold), transparent 70%);
}
.facts-title {
  font-family: var(--serif);
  font-size: 19px;
  letter-spacing: .08em;
  margin-bottom: 14px;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
}
.facts-title i {
  font-family: var(--mono);
  font-style: normal;
  font-size: 10px;
  letter-spacing: .3em;
  color: var(--dim);
}
.value-list { list-style: none; }
.value-list li {
  padding: 16px 0;
  border-bottom: 1px dashed var(--line-soft);
}
.value-list li:last-child { border-bottom: none; }
.value-list b {
  display: block;
  font-size: 15.5px;
  letter-spacing: .06em;
  margin-bottom: 3px;
}
.value-list b::before {
  content: "◆";
  color: var(--gold);
  font-size: 10px;
  margin-right: 10px;
  vertical-align: 2px;
}
.value-list span {
  display: block;
  padding-left: 20px;
  font-size: 13.5px;
  color: var(--muted);
  line-height: 1.7;
}

/* ---------- 联系 ---------- */
#contact { padding-bottom: 130px; }
.contact-card {
  text-align: center;
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 90px 40px;
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(ellipse 60% 90% at 50% -20%, rgba(226,166,75,.12), transparent 70%),
    var(--panel);
}
.contact-card h2 { margin-bottom: 16px; }
.contact-sub {
  color: var(--muted);
  max-width: 520px;
  margin: 0 auto 44px;
}

.contact-items {
  display: flex;
  justify-content: center;
  gap: 22px;
  flex-wrap: wrap;
}
.contact-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  min-width: 280px;
  padding: 30px 40px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: var(--ink-2);
  transition: border-color .3s, transform .3s, background .3s, box-shadow .3s;
}
.contact-item:hover {
  border-color: var(--gold);
  transform: translateY(-4px);
  background: rgba(226,166,75,.05);
  box-shadow: 0 16px 36px -18px rgba(226,166,75,.35);
}
.ci-label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .32em;
  text-transform: uppercase;
  color: var(--dim);
}
.ci-value {
  font-size: 23px;
  color: var(--gold-hi);
  letter-spacing: .04em;
}
.ci-note { font-size: 12.5px; color: var(--dim); }

/* ---------- 页脚 ---------- */
.footer {
  border-top: 1px solid var(--line-soft);
  padding: 56px 32px;
  background: var(--ink-2);
}
.footer-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-brand {
  font-family: var(--serif);
  font-weight: 900;
  font-size: 20px;
  letter-spacing: .18em;
}
.footer-brand span {
  font-family: var(--mono);
  font-weight: 400;
  font-size: 10px;
  letter-spacing: .4em;
  color: var(--dim);
  margin-left: 10px;
}
.footer-meta { font-size: 12.5px; color: var(--dim); letter-spacing: .04em; }

/* ---------- 滚动进场动画 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity .8s cubic-bezier(.2,.65,.3,1), transform .8s cubic-bezier(.2,.65,.3,1);
}
.reveal.d1 { transition-delay: .12s; }
.reveal.d2 { transition-delay: .24s; }
.reveal.d3 { transition-delay: .36s; }
.reveal.d4 { transition-delay: .48s; }
.reveal.in { opacity: 1; transform: none; }

/* ============================================================
   高科技动态效果
   ============================================================ */

/* 顶部滚动进度条 */
.scroll-progress {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 2px;
  z-index: 300;
  pointer-events: none;
}
.scroll-progress i {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--gold), var(--teal));
  transform: scaleX(0);
  transform-origin: left;
  box-shadow: 0 0 10px rgba(226, 166, 75, .6);
}

/* 首屏粒子电路网络画布 */
.hero-canvas { position: absolute; inset: 0; z-index: 0; }
.hero-inner, .hero-strip { position: relative; z-index: 1; }

/* 能力打字机 */
.hero-type {
  margin-top: 20px;
  font-size: 14px;
  color: var(--teal);
  letter-spacing: .06em;
  min-height: 1.8em;
}
.hero-type .type-prefix { color: var(--gold); margin-right: 10px; }
.type-cursor { color: var(--gold); animation: caretBlink 1s steps(1) infinite; }
@keyframes caretBlink { 50% { opacity: 0; } }

/* 成品卡片：3D 倾斜（JS 驱动）+ 光泽扫过 */
.shot { position: relative; will-change: transform; }
.shot.tilting { transition: transform .08s linear, border-color .35s, box-shadow .35s; }
.shot::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(115deg, transparent 42%, rgba(245, 197, 107, .14) 50%, transparent 58%);
  transform: translateX(-130%);
  transition: transform .7s ease;
  pointer-events: none;
  z-index: 2;
}
.shot:hover::after { transform: translateX(130%); }

/* 鼠标跟随光晕 */
.cursor-glow {
  position: fixed;
  left: 0; top: 0;
  width: 360px; height: 360px;
  margin: -180px 0 0 -180px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(226, 166, 75, .14), rgba(226, 166, 75, .04) 45%, transparent 70%);
  mix-blend-mode: screen;
  pointer-events: none;
  z-index: 120;
  opacity: 0;
  transition: opacity .4s;
}
body.glow-on .cursor-glow { opacity: 1; }

/* 无障碍 / 性能兜底 */
@media (max-width: 960px) {
  .cursor-glow { display: none; }
}

/* 页脚备案号 */
.footer-icp {
  margin-top: 6px;
  font-size: 12px;
  letter-spacing: .04em;
}
.footer-icp a { color: var(--ink-soft); text-decoration: none; transition: color .3s; }
.footer-icp a:hover { color: var(--gold); }
@media (prefers-reduced-motion: reduce) {
  .hero-canvas, .cursor-glow { display: none !important; }
  .strip-track, .ring, .chip-ring, .pins line, .node, .type-cursor { animation: none !important; }
}

/* ---------- 响应式 ---------- */
@media (max-width: 960px) {
  .hero-inner { grid-template-columns: 1fr; gap: 20px; }
  .hero { padding-top: 120px; }
  .hero-visual { order: 2; margin-top: 30px; }
  .core { width: min(300px, 70vw); }
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .shots { grid-template-columns: repeat(2, 1fr); }
  .svc { grid-template-columns: 64px 1fr; }
  .svc-arrow { display: none; }
}

@media (max-width: 640px) {
  .section { padding: 80px 22px; }
  .nav-inner { padding: 0 22px; }

  .nav-links {
    position: fixed;
    inset: 72px 0 auto 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: rgba(10,14,19,.96);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--line-soft);
    transform: translateY(-130%);
    transition: transform .4s cubic-bezier(.2,.65,.3,1);
    padding: 10px 22px 24px;
  }
  .nav.open .nav-links { transform: translateY(0); }
  .nav-links a { padding: 16px 4px; border-bottom: 1px solid var(--line-soft); font-size: 16px; }
  .nav-links a:last-child { border-bottom: none; }
  .nav-cta { text-align: center; border-radius: 999px; margin-top: 14px; }
  .nav-burger { display: flex; }

  .hero h1 { font-size: clamp(32px, 9vw, 44px); }
  .hero-points { flex-direction: column; border-top: none; }
  .hero-points li { border-left: none !important; padding: 12px 0 !important; border-top: 1px solid var(--line-soft); }
  .hero-points li:first-child { border-top: none; }

  .shots { grid-template-columns: 1fr; }
  .svc { padding: 28px 12px; }
  .svc:hover { padding-left: 20px; }
  .contact-card { padding: 64px 24px; }
  .contact-item { width: 100%; min-width: 0; padding: 26px 24px; }
  .ci-value { font-size: 20px; }
}