/* ============================================================
   澜图科技 LANTU DIGITAL — 视觉系统
   夜色 / 电蓝 / 青 / 紫 · 数字星图
   ============================================================ */

:root {
  --ink: #05070F;
  --ink-2: #090D1A;
  --panel: #0B1120;
  --line: rgba(141, 160, 255, 0.14);
  --line-soft: rgba(141, 160, 255, 0.08);
  --text: #EAEEF8;
  --muted: #8B94AB;
  --blue: #4D7CFF;
  --cyan: #3DE8D2;
  --violet: #8B5CF6;
  --grad: linear-gradient(100deg, var(--blue) 0%, var(--cyan) 55%, var(--violet) 110%);
  --font-display: "Sora", "Noto Sans SC", sans-serif;
  --font-body: "Noto Sans SC", "Sora", sans-serif;
  --font-mono: "JetBrains Mono", "Noto Sans SC", monospace;
  --nav-h: 76px;
  --radius: 18px;
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-h);
}

body {
  background: var(--ink);
  color: var(--text);
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.75;
  letter-spacing: 0.01em;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

::selection { background: rgba(77, 124, 255, 0.35); color: #fff; }

img, svg, canvas { display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }

.mono {
  font-family: var(--font-mono);
  letter-spacing: 0.08em;
}

.grad {
  font-style: normal;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

/* ---------- 自定义光标 ---------- */
.cursor-dot,
.cursor-ring {
  position: fixed;
  top: 0; left: 0;
  pointer-events: none;
  z-index: 9999;
  border-radius: 50%;
  transform: translate(-50%, -50%);
}
.cursor-dot {
  width: 6px; height: 6px;
  background: var(--cyan);
  transition: opacity 0.2s;
}
.cursor-ring {
  width: 34px; height: 34px;
  border: 1px solid rgba(77, 124, 255, 0.55);
  transition: width 0.25s var(--ease-out), height 0.25s var(--ease-out),
              border-color 0.25s, background 0.25s, opacity 0.2s;
}
.cursor-ring.is-link {
  width: 52px; height: 52px;
  border-color: rgba(61, 232, 210, 0.7);
  background: rgba(61, 232, 210, 0.06);
}
.cursor-ring.is-view {
  width: 74px; height: 74px;
  border-color: rgba(61, 232, 210, 0.9);
  background: rgba(5, 7, 15, 0.45);
  backdrop-filter: blur(2px);
}
.cursor-ring.is-view::after {
  content: "VIEW";
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--cyan);
}
@media (hover: none), (pointer: coarse) {
  .cursor-dot, .cursor-ring { display: none; }
}

/* ---------- 加载遮罩 ---------- */
.loader {
  position: fixed;
  inset: 0;
  z-index: 10000;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 26px;
  background: var(--ink);
  transition: opacity 0.7s var(--ease-out), visibility 0.7s;
}
.loader.is-done { opacity: 0; visibility: hidden; }
.loader-mark { position: relative; width: 64px; height: 64px; }
.loader-core {
  position: absolute;
  inset: 22px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 24px rgba(61, 232, 210, 0.8);
  animation: corePulse 1.2s ease-in-out infinite;
}
.loader-orbit {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 2px solid transparent;
  border-top-color: var(--blue);
  border-right-color: var(--violet);
  animation: orbitSpin 1s linear infinite;
}
@keyframes orbitSpin { to { transform: rotate(360deg); } }
@keyframes corePulse { 50% { transform: scale(0.72); opacity: 0.7; } }
.loader-text {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.5em;
  color: var(--muted);
}

/* ---------- 导航 ---------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 900;
  transition: background 0.4s, border-color 0.4s, backdrop-filter 0.4s;
  border-bottom: 1px solid transparent;
}
.nav.is-scrolled {
  background: rgba(5, 7, 15, 0.72);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom-color: var(--line-soft);
}
.nav-inner {
  max-width: 1280px;
  margin: 0 auto;
  height: var(--nav-h);
  padding: 0 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}
.brand-mark { width: 30px; height: 30px; color: var(--blue); }
.brand-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17px;
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}
.brand-name em {
  font-style: normal;
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 400;
  letter-spacing: 0.32em;
  color: var(--muted);
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 34px;
}
.nav-links a {
  font-size: 14.5px;
  font-weight: 500;
  color: var(--muted);
  transition: color 0.25s;
  position: relative;
}
.nav-links a:hover { color: var(--text); }
.nav-links a:not(.nav-cta)::after {
  content: "";
  position: absolute;
  left: 0; bottom: -6px;
  width: 100%; height: 1px;
  background: var(--grad);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.35s var(--ease-out);
}
.nav-links a:not(.nav-cta):hover::after {
  transform: scaleX(1);
  transform-origin: left;
}
.nav-cta {
  color: var(--text) !important;
  border: 1px solid rgba(77, 124, 255, 0.5);
  padding: 9px 20px;
  border-radius: 100px;
  transition: background 0.3s, border-color 0.3s, box-shadow 0.3s;
}
.nav-cta:hover {
  background: rgba(77, 124, 255, 0.14);
  border-color: var(--blue);
  box-shadow: 0 0 24px rgba(77, 124, 255, 0.25);
}
.nav-burger {
  display: none;
  flex-direction: column;
  gap: 6px;
  padding: 8px;
}
.nav-burger span {
  width: 24px; height: 2px;
  background: var(--text);
  transition: transform 0.3s var(--ease-out), opacity 0.3s;
}
.nav-burger.is-open span:first-child { transform: translateY(4px) rotate(45deg); }
.nav-burger.is-open span:last-child { transform: translateY(-4px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  overflow: hidden;
}
#heroCanvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}
.hero-grid-lines {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, var(--line-soft) 1px, transparent 1px),
    linear-gradient(to bottom, var(--line-soft) 1px, transparent 1px);
  background-size: 96px 96px;
  mask-image: radial-gradient(ellipse 90% 80% at 50% 45%, black 0%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse 90% 80% at 50% 45%, black 0%, transparent 70%);
  opacity: 0.5;
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 1280px;
  width: 100%;
  margin: 0 auto;
  padding: calc(var(--nav-h) + 40px) 32px 0;
  pointer-events: none;
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(5, 7, 15, 0.55) 0%, rgba(5, 7, 15, 0.18) 40%, transparent 65%);
}
.hero-content a { pointer-events: auto; }
.hero-eyebrow {
  font-size: 12.5px;
  color: var(--cyan);
  margin-bottom: 30px;
  text-shadow: 0 0 20px rgba(61, 232, 210, 0.4);
}
.hero-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(44px, 8.2vw, 108px);
  line-height: 1.12;
  letter-spacing: 0.01em;
  margin-bottom: 34px;
}
.hero-title .line { display: block; overflow: hidden; }
.hero-title .line-inner {
  display: inline-block;
  transform: translateY(110%);
}
.hero-title .grad {
  padding-right: 0.08em;
  filter: drop-shadow(0 0 26px rgba(77, 124, 255, 0.35));
}
.hero-sub {
  max-width: 560px;
  font-size: clamp(15px, 1.4vw, 17.5px);
  font-weight: 300;
  color: var(--muted);
  margin-bottom: 44px;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

/* 按钮 */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 15px;
  padding: 16px 30px;
  border-radius: 100px;
  transition: transform 0.3s var(--ease-out), box-shadow 0.3s, background 0.3s, border-color 0.3s;
  overflow: hidden;
}
.btn svg { width: 18px; height: 18px; transition: transform 0.3s var(--ease-out); }
.btn:hover svg { transform: translateX(5px); }
.btn-primary {
  color: #fff;
  background: linear-gradient(100deg, #3D6BEF, #4D7CFF 45%, #6D5CFF);
  box-shadow: 0 8px 32px rgba(77, 124, 255, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.22);
}
.btn-primary::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, transparent 20%, rgba(255, 255, 255, 0.25) 50%, transparent 80%);
  transform: translateX(-120%);
  transition: transform 0.7s var(--ease-out);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 44px rgba(77, 124, 255, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.22);
}
.btn-primary:hover::before { transform: translateX(120%); }
.btn-ghost {
  color: var(--text);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.02);
  backdrop-filter: blur(6px);
}
.btn-ghost:hover {
  border-color: rgba(61, 232, 210, 0.55);
  background: rgba(61, 232, 210, 0.06);
  transform: translateY(-2px);
}
.btn-lg { padding: 19px 38px; font-size: 16px; }

/* Hero 底部 */
.hero-foot {
  position: relative;
  z-index: 2;
  max-width: 1280px;
  width: 100%;
  margin: auto auto 0;
  padding: 70px 32px 36px;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
}
.hero-stats {
  display: flex;
  gap: clamp(28px, 5vw, 72px);
}
.stat { display: flex; flex-direction: column; gap: 2px; }
.stat strong {
  font-size: clamp(26px, 3vw, 40px);
  font-weight: 600;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.stat span { font-size: 13px; color: var(--muted); }
.hero-scrollhint {
  font-size: 11px;
  letter-spacing: 0.3em;
  color: var(--muted);
  animation: hintFloat 2.4s ease-in-out infinite;
}
@keyframes hintFloat { 50% { transform: translateY(7px); opacity: 0.55; } }

/* reveal-line 初始态（JS 触发） */
.reveal-line {
  opacity: 0;
  transform: translateY(26px);
}

/* ---------- 客户信任条 ---------- */
.marquee-band {
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
  background: rgba(11, 17, 32, 0.5);
  overflow: hidden;
  padding: 22px 0;
}
.marquee {
  display: flex;
  width: max-content;
  animation: marqueeMove 36s linear infinite;
}
.marquee-band:hover .marquee { animation-play-state: paused; }
.marquee-track {
  display: flex;
  align-items: center;
  gap: 56px;
  padding-right: 56px;
}
.marquee-track span {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 17px;
  color: rgba(139, 148, 171, 0.75);
  white-space: nowrap;
  transition: color 0.3s;
}
.marquee-track span:hover { color: var(--text); }
.marquee-track i {
  font-style: normal;
  font-size: 8px;
  color: rgba(77, 124, 255, 0.5);
}
@keyframes marqueeMove { to { transform: translateX(-50%); } }

/* ---------- 通用 Section ---------- */
.section {
  position: relative;
  max-width: 1280px;
  margin: 0 auto;
  padding: clamp(90px, 11vw, 150px) 32px;
}
.section-head { max-width: 760px; margin-bottom: clamp(50px, 6vw, 84px); }
.eyebrow {
  font-size: 12.5px;
  color: var(--cyan);
  margin-bottom: 22px;
  letter-spacing: 0.14em;
}
.section-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(30px, 4.6vw, 54px);
  line-height: 1.22;
  margin-bottom: 22px;
}
.section-desc {
  font-size: 16px;
  font-weight: 300;
  color: var(--muted);
  max-width: 560px;
}

/* 滚动显现 */
[data-reveal] {
  opacity: 0;
  transform: translateY(36px);
  transition: opacity 0.9s var(--ease-out), transform 0.9s var(--ease-out);
  transition-delay: var(--reveal-delay, 0s);
}
[data-reveal].is-in { opacity: 1; transform: none; }

/* ---------- 服务卡片 ---------- */
.service-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}
.service-card {
  position: relative;
  padding: 40px 38px 44px;
  border-radius: var(--radius);
  border: 1px solid var(--line-soft);
  background: linear-gradient(160deg, rgba(17, 24, 44, 0.75), rgba(9, 13, 26, 0.9));
  transform-style: preserve-3d;
  transition: border-color 0.4s, box-shadow 0.4s;
  overflow: hidden;
  will-change: transform;
}
.service-card:hover {
  border-color: rgba(77, 124, 255, 0.45);
  box-shadow: 0 24px 60px rgba(3, 5, 12, 0.6), 0 0 0 1px rgba(77, 124, 255, 0.12);
}
.card-glow {
  position: absolute;
  width: 340px; height: 340px;
  left: var(--glow-x, 50%);
  top: var(--glow-y, 50%);
  transform: translate(-50%, -50%);
  background: radial-gradient(circle, rgba(77, 124, 255, 0.16), transparent 65%);
  opacity: 0;
  transition: opacity 0.4s;
  pointer-events: none;
}
.service-card:hover .card-glow { opacity: 1; }
.card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 30px;
  transform: translateZ(30px);
}
.card-index {
  font-size: 12px;
  color: rgba(61, 232, 210, 0.75);
  letter-spacing: 0.18em;
}
.card-icon {
  width: 62px; height: 62px;
  display: grid;
  place-items: center;
  border-radius: 16px;
  color: var(--blue);
  background: rgba(77, 124, 255, 0.09);
  border: 1px solid rgba(77, 124, 255, 0.22);
  transition: color 0.35s, background 0.35s, box-shadow 0.35s, transform 0.35s var(--ease-out);
}
.card-icon svg { width: 34px; height: 34px; }
.service-card:hover .card-icon {
  color: var(--cyan);
  background: rgba(61, 232, 210, 0.09);
  border-color: rgba(61, 232, 210, 0.35);
  box-shadow: 0 0 30px rgba(61, 232, 210, 0.18);
  transform: translateY(-4px);
}
.service-card h3 {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 14px;
  transform: translateZ(24px);
}
.service-card > p {
  font-size: 15px;
  font-weight: 300;
  color: var(--muted);
  margin-bottom: 24px;
  transform: translateZ(18px);
}
.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  transform: translateZ(12px);
}
.tag-list li {
  font-size: 12.5px;
  color: rgba(234, 238, 248, 0.78);
  padding: 5px 13px;
  border-radius: 100px;
  border: 1px solid var(--line-soft);
  background: rgba(255, 255, 255, 0.025);
}
.card-arrow {
  position: absolute;
  right: 34px;
  bottom: 36px;
  font-size: 20px;
  color: var(--cyan);
  opacity: 0;
  transform: translateX(-12px);
  transition: opacity 0.35s, transform 0.35s var(--ease-out);
}
.service-card:hover .card-arrow { opacity: 1; transform: none; }

/* 技术栈条 */
.stack-strip {
  margin-top: 56px;
  display: flex;
  align-items: center;
  gap: 26px;
  flex-wrap: wrap;
  padding: 26px 30px;
  border-radius: var(--radius);
  border: 1px dashed var(--line);
}
.strip-label { font-size: 12px; color: var(--muted); white-space: nowrap; }
.strip-tags { display: flex; flex-wrap: wrap; gap: 10px; }
.strip-tags span {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: rgba(234, 238, 248, 0.72);
  padding: 6px 14px;
  border-radius: 8px;
  background: rgba(77, 124, 255, 0.07);
  border: 1px solid rgba(77, 124, 255, 0.16);
  transition: color 0.25s, border-color 0.25s, background 0.25s;
}
.strip-tags span:hover {
  color: var(--cyan);
  border-color: rgba(61, 232, 210, 0.4);
  background: rgba(61, 232, 210, 0.07);
}

/* ---------- 案例 ---------- */
.work-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}
.work-card {
  border-radius: var(--radius);
  border: 1px solid var(--line-soft);
  background: var(--panel);
  overflow: hidden;
  transition: transform 0.5s var(--ease-out), border-color 0.4s, box-shadow 0.5s;
}
.work-card:hover {
  transform: translateY(-8px);
  border-color: rgba(77, 124, 255, 0.4);
  box-shadow: 0 30px 70px rgba(3, 5, 12, 0.65);
}
.work-feature { grid-column: 1 / -1; }
.work-feature .work-visual { height: 380px; }
.work-visual {
  position: relative;
  height: 260px;
  display: grid;
  place-items: center;
  overflow: hidden;
}
.work-visual::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.045) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(circle at 50% 50%, black, transparent 78%);
  -webkit-mask-image: radial-gradient(circle at 50% 50%, black, transparent 78%);
}
.visual-a { background: radial-gradient(ellipse 80% 90% at 50% 110%, rgba(77, 124, 255, 0.32), transparent 65%), linear-gradient(180deg, #0C1330, #080C1B); }
.visual-b { background: radial-gradient(ellipse 80% 90% at 50% 110%, rgba(61, 232, 210, 0.2), transparent 65%), linear-gradient(180deg, #0A1A24, #070D17); }
.visual-c { background: radial-gradient(ellipse 80% 90% at 50% 110%, rgba(139, 92, 246, 0.26), transparent 65%), linear-gradient(180deg, #130F2E, #0A0819); }
.visual-d { background: radial-gradient(ellipse 80% 90% at 50% 110%, rgba(77, 124, 255, 0.24), transparent 65%), linear-gradient(180deg, #0B1533, #080B19); }

/* 手机 mock */
.mock-device {
  position: relative;
  width: 150px;
  height: 300px;
  border-radius: 26px;
  border: 2px solid rgba(180, 195, 255, 0.35);
  background: rgba(8, 12, 26, 0.9);
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.55), 0 0 60px rgba(77, 124, 255, 0.28);
  padding: 12px;
  animation: deviceFloat 5.5s ease-in-out infinite;
  z-index: 1;
}
@keyframes deviceFloat { 50% { transform: translateY(-14px) rotate(-1.2deg); } }
.mock-notch {
  width: 56px; height: 7px;
  margin: 0 auto 12px;
  border-radius: 100px;
  background: rgba(180, 195, 255, 0.28);
}
.mock-screen { display: flex; flex-direction: column; gap: 10px; }
.mock-bar {
  height: 10px;
  border-radius: 100px;
  background: linear-gradient(90deg, rgba(77, 124, 255, 0.65), rgba(61, 232, 210, 0.4));
}
.mock-bar.w70 { width: 70%; }
.mock-bar.w45 { width: 45%; opacity: 0.55; }
.mock-chip {
  width: 100%; height: 74px;
  border-radius: 12px;
  margin-top: 4px;
  background: linear-gradient(135deg, rgba(77, 124, 255, 0.4), rgba(139, 92, 246, 0.4));
  border: 1px solid rgba(141, 160, 255, 0.3);
}
.mock-row { display: flex; gap: 8px; margin-top: 2px; }
.mock-row i {
  flex: 1; height: 46px;
  border-radius: 10px;
  background: rgba(141, 160, 255, 0.12);
  border: 1px solid rgba(141, 160, 255, 0.18);
}
.work-orbit {
  position: absolute;
  width: 420px; height: 420px;
  border-radius: 50%;
  border: 1px dashed rgba(141, 160, 255, 0.22);
  animation: orbitSpin 26s linear infinite;
}
.work-orbit::before {
  content: "";
  position: absolute;
  top: 20px; left: 50%;
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 18px var(--cyan);
}

/* 仪表盘 mock */
.mock-dash {
  position: relative;
  z-index: 1;
  width: 68%;
  max-width: 330px;
  padding: 18px;
  border-radius: 14px;
  border: 1px solid rgba(141, 160, 255, 0.22);
  background: rgba(8, 13, 24, 0.82);
  box-shadow: 0 24px 50px rgba(0, 0, 0, 0.45);
  display: flex;
  flex-direction: column;
  gap: 9px;
  transition: transform 0.5s var(--ease-out);
}
.work-card:hover .mock-dash { transform: translateY(-6px); }
.dash-line { height: 8px; border-radius: 100px; background: rgba(61, 232, 210, 0.3); }
.dash-line.l1 { width: 46%; }
.dash-line.l2 { width: 70%; opacity: 0.55; }
.dash-line.l3 { width: 30%; opacity: 0.35; }
.dash-chart {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  height: 74px;
  margin-top: 8px;
  padding-top: 10px;
  border-top: 1px solid rgba(141, 160, 255, 0.16);
}
.dash-chart i {
  flex: 1;
  height: var(--h);
  border-radius: 4px 4px 0 0;
  background: linear-gradient(180deg, var(--cyan), rgba(77, 124, 255, 0.35));
  animation: barPulse 2.8s ease-in-out infinite;
  animation-delay: calc(var(--h) * -0.02s);
}
@keyframes barPulse { 50% { filter: brightness(1.35); } }

/* 小程序 mock */
.mock-mini {
  position: relative;
  z-index: 1;
  width: 132px;
  border-radius: 20px;
  border: 2px solid rgba(200, 180, 255, 0.3);
  background: rgba(13, 9, 30, 0.92);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.5), 0 0 50px rgba(139, 92, 246, 0.25);
  overflow: hidden;
  animation: deviceFloat 6.2s ease-in-out infinite;
}
.mini-head {
  height: 44px;
  background: linear-gradient(120deg, rgba(139, 92, 246, 0.55), rgba(77, 124, 255, 0.4));
}
.mini-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  padding: 10px;
}
.mini-card {
  height: 38px;
  border-radius: 8px;
  background: rgba(196, 181, 253, 0.13);
  border: 1px solid rgba(196, 181, 253, 0.18);
}
.mini-tab {
  display: flex;
  justify-content: space-around;
  padding: 9px 12px;
  border-top: 1px solid rgba(196, 181, 253, 0.16);
}
.mini-tab i {
  width: 14px; height: 14px;
  border-radius: 4px;
  background: rgba(196, 181, 253, 0.25);
}
.mini-tab i:first-child { background: var(--violet); }

/* 浏览器 mock */
.mock-browser {
  position: relative;
  z-index: 1;
  width: 70%;
  max-width: 340px;
  border-radius: 12px;
  border: 1px solid rgba(141, 160, 255, 0.24);
  background: rgba(8, 12, 25, 0.85);
  box-shadow: 0 24px 50px rgba(0, 0, 0, 0.45);
  overflow: hidden;
  transition: transform 0.5s var(--ease-out);
}
.work-card:hover .mock-browser { transform: translateY(-6px); }
.browser-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 9px 12px;
  background: rgba(141, 160, 255, 0.07);
  border-bottom: 1px solid rgba(141, 160, 255, 0.14);
}
.browser-bar i {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: rgba(141, 160, 255, 0.35);
}
.browser-bar i:first-child { background: rgba(255, 122, 122, 0.6); }
.browser-bar i:nth-child(2) { background: rgba(255, 209, 116, 0.6); }
.browser-bar i:nth-child(3) { background: rgba(61, 232, 210, 0.6); }
.browser-bar span {
  flex: 1;
  height: 10px;
  margin-left: 8px;
  border-radius: 100px;
  background: rgba(141, 160, 255, 0.13);
}
.browser-body { padding: 14px; display: flex; flex-direction: column; gap: 12px; }
.b-hero {
  display: block;
  height: 60px;
  border-radius: 8px;
  background: linear-gradient(115deg, rgba(77, 124, 255, 0.5), rgba(61, 232, 210, 0.3));
}
.b-cols { display: flex; gap: 10px; }
.b-cols i {
  flex: 1;
  height: 34px;
  border-radius: 7px;
  background: rgba(141, 160, 255, 0.12);
  border: 1px solid rgba(141, 160, 255, 0.16);
}

.work-info { padding: 30px 34px 36px; }
.work-tag {
  font-size: 11.5px;
  color: var(--cyan);
  letter-spacing: 0.2em;
  margin-bottom: 12px;
}
.work-info h3 {
  font-family: var(--font-display);
  font-size: 21px;
  font-weight: 700;
  margin-bottom: 10px;
}
.work-info > p { font-size: 14.5px; font-weight: 300; color: var(--muted); }
.work-feature .work-info { display: block; }
.work-metrics {
  display: flex;
  gap: 44px;
  margin-top: 22px;
  padding-top: 22px;
  border-top: 1px solid var(--line-soft);
}
.work-metrics div { display: flex; flex-direction: column; }
.work-metrics strong {
  font-size: 24px;
  font-weight: 600;
  color: var(--cyan);
}
.work-metrics span { font-size: 12.5px; color: var(--muted); }

/* ---------- 流程 ---------- */
.process-line {
  position: relative;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 26px;
  padding-top: 34px;
}
.process-line::before {
  content: "";
  position: absolute;
  top: 34px;
  left: 6%;
  right: 6%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(77, 124, 255, 0.45) 18%, rgba(61, 232, 210, 0.45) 82%, transparent);
}
.process-step {
  position: relative;
  padding-top: 40px;
}
.step-num {
  position: absolute;
  top: -6px;
  left: 0;
  font-size: 46px;
  font-weight: 500;
  color: transparent;
  -webkit-text-stroke: 1px rgba(141, 160, 255, 0.35);
  letter-spacing: 0.02em;
}
.step-dot {
  position: absolute;
  top: -39px;
  left: 2px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--blue);
  box-shadow: 0 0 0 5px rgba(77, 124, 255, 0.15), 0 0 16px rgba(77, 124, 255, 0.7);
  transition: background 0.3s, box-shadow 0.3s;
}
.process-step:hover .step-dot {
  background: var(--cyan);
  box-shadow: 0 0 0 6px rgba(61, 232, 210, 0.15), 0 0 22px rgba(61, 232, 210, 0.85);
}
.process-step h3 {
  font-family: var(--font-display);
  font-size: 18.5px;
  font-weight: 700;
  margin-bottom: 10px;
}
.process-step p {
  font-size: 13.8px;
  font-weight: 300;
  color: var(--muted);
  line-height: 1.8;
  margin-bottom: 14px;
}
.step-time {
  display: inline-block;
  font-size: 11.5px;
  color: var(--cyan);
  padding: 4px 12px;
  border-radius: 100px;
  border: 1px solid rgba(61, 232, 210, 0.3);
  background: rgba(61, 232, 210, 0.05);
}

/* ---------- 客户之声 ---------- */
.voice-stage {
  position: relative;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: linear-gradient(160deg, rgba(17, 24, 44, 0.6), rgba(9, 13, 26, 0.85));
  padding: clamp(36px, 5vw, 70px);
  overflow: hidden;
}
.voice-stage::before {
  content: "“";
  position: absolute;
  top: -30px;
  left: 26px;
  font-family: var(--font-display);
  font-size: 220px;
  font-weight: 800;
  color: rgba(77, 124, 255, 0.09);
  pointer-events: none;
}
.voice-track {
  display: grid;
}
.voice-card {
  grid-area: 1 / 1;
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.65s var(--ease-out), transform 0.65s var(--ease-out);
  pointer-events: none;
}
.voice-card.is-active {
  opacity: 1;
  transform: none;
  pointer-events: auto;
}
.voice-card p {
  font-size: clamp(17px, 2.1vw, 23px);
  font-weight: 300;
  line-height: 1.85;
  margin-bottom: 34px;
  max-width: 880px;
}
.voice-card footer {
  display: flex;
  align-items: center;
  gap: 16px;
}
.voice-avatar {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-weight: 700;
  font-size: 19px;
  color: #fff;
  background: linear-gradient(135deg, var(--c1), var(--c2));
  box-shadow: 0 8px 22px rgba(77, 124, 255, 0.3);
}
.voice-card footer strong { display: block; font-size: 15.5px; }
.voice-card footer span { font-size: 13px; color: var(--muted); }
.voice-nav {
  display: flex;
  align-items: center;
  gap: 22px;
  margin-top: 40px;
}
.voice-btn {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 1px solid var(--line);
  color: var(--text);
  font-size: 17px;
  display: grid;
  place-items: center;
  transition: border-color 0.3s, background 0.3s, transform 0.3s var(--ease-out);
}
.voice-btn:hover {
  border-color: var(--cyan);
  background: rgba(61, 232, 210, 0.07);
  transform: scale(1.06);
}
.voice-dots { display: flex; gap: 10px; }
.voice-dots button {
  width: 8px;
  height: 8px;
  border-radius: 100px;
  background: rgba(141, 160, 255, 0.3);
  transition: width 0.35s var(--ease-out), background 0.3s;
}
.voice-dots button.is-active {
  width: 26px;
  background: var(--cyan);
}

/* ---------- CTA ---------- */
.cta {
  position: relative;
  overflow: hidden;
  border-top: 1px solid var(--line-soft);
}
#ctaCanvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.85;
}
.cta-inner {
  position: relative;
  z-index: 2;
  max-width: 760px;
  margin: 0 auto;
  padding: clamp(90px, 11vw, 150px) 32px;
  text-align: center;
}
.cta-inner .eyebrow { text-align: center; }
.cta-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(34px, 5.4vw, 62px);
  line-height: 1.24;
  margin-bottom: 20px;
}
.cta-sub {
  font-weight: 300;
  color: var(--muted);
  margin-bottom: 48px;
}
.cta-form {
  text-align: left;
  display: flex;
  flex-direction: column;
  gap: 18px;
  padding: clamp(26px, 4vw, 42px);
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: rgba(9, 13, 26, 0.72);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.field { display: flex; flex-direction: column; gap: 9px; }
.field span {
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.14em;
}
.field input,
.field textarea {
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--text);
  padding: 14px 17px;
  border-radius: 12px;
  border: 1px solid var(--line-soft);
  background: rgba(255, 255, 255, 0.03);
  outline: none;
  resize: vertical;
  transition: border-color 0.3s, box-shadow 0.3s, background 0.3s;
}
.field input::placeholder,
.field textarea::placeholder { color: rgba(139, 148, 171, 0.55); }
.field input:focus,
.field textarea:focus {
  border-color: rgba(77, 124, 255, 0.65);
  background: rgba(77, 124, 255, 0.05);
  box-shadow: 0 0 0 4px rgba(77, 124, 255, 0.13);
}
.cta-form .btn { justify-content: center; margin-top: 6px; }
.form-note {
  min-height: 22px;
  font-size: 14px;
  text-align: center;
  color: var(--cyan);
  transition: opacity 0.3s;
}
.form-note.is-error { color: #FF8A8A; }

/* ---------- 页脚 ---------- */
.footer {
  border-top: 1px solid var(--line-soft);
  background: var(--ink-2);
}
.footer-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 70px 32px 50px;
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.3fr;
  gap: 40px;
}
.footer-brand p {
  margin-top: 18px;
  font-size: 14px;
  font-weight: 300;
  color: var(--muted);
}
.footer-col { display: flex; flex-direction: column; gap: 13px; }
.footer-col h4 {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.22em;
  color: rgba(234, 238, 248, 0.85);
  margin-bottom: 6px;
}
.footer-col a, .footer-col span {
  font-size: 14px;
  font-weight: 300;
  color: var(--muted);
  transition: color 0.25s;
}
.footer-col a:hover { color: var(--cyan); }
.footer-base {
  max-width: 1280px;
  margin: 0 auto;
  padding: 22px 32px 30px;
  border-top: 1px solid var(--line-soft);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 12.5px;
  color: rgba(139, 148, 171, 0.65);
}

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .service-grid { grid-template-columns: 1fr; }
  .work-grid { grid-template-columns: 1fr; }
  .process-line { grid-template-columns: repeat(2, 1fr); gap: 44px 26px; }
  .process-line::before { display: none; }
  .step-dot { display: none; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 760px) {
  .hero-eyebrow { font-size: 10.5px; letter-spacing: 0.1em; white-space: nowrap; }
  .hero-sub { max-width: 100%; }
  .nav-links {
    position: fixed;
    top: var(--nav-h);
    left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px 24px 24px;
    background: rgba(5, 7, 15, 0.96);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--line-soft);
    transform: translateY(-130%);
    transition: transform 0.45s var(--ease-out);
  }
  .nav-links.is-open { transform: none; }
  .nav-links a { padding: 14px 4px; font-size: 16px; border-bottom: 1px solid var(--line-soft); }
  .nav-links a::after { display: none; }
  .nav-cta { text-align: center; margin-top: 14px; border-bottom: none !important; }
  .nav-burger { display: flex; }

  .hero-foot { flex-direction: column; align-items: flex-start; gap: 26px; }
  .hero-stats { flex-wrap: wrap; gap: 24px 36px; }
  .hero-scrollhint { display: none; }
  .hero-actions .btn { width: 100%; justify-content: center; }

  .form-row { grid-template-columns: 1fr; }
  .process-line { grid-template-columns: 1fr; }
  .work-feature .work-visual { height: 300px; }
  .work-metrics { gap: 26px; flex-wrap: wrap; }
  .footer-inner { grid-template-columns: 1fr; gap: 34px; }
  .footer-base { justify-content: center; text-align: center; }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001s !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001s !important;
  }
  .reveal-line, [data-reveal] { opacity: 1; transform: none; }
  .hero-title .line-inner { transform: none; }
}