/* 典众网络 2026 — 科技蓝 / 冰蓝 */
@font-face {
  font-family: "Douyin Sans";
  src: url("../fonts/DouyinSansBold.ttf") format("truetype");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

:root {
  --ink: #0c1a2e;
  --ink-soft: #1e3a5f;
  --muted: #5a7190;
  --line: #d4e2f0;
  --paper: #eef5fb;
  --white: #ffffff;
  --accent: #0153a7;
  --accent-2: #1a6ec4;
  --accent-soft: rgba(1, 83, 167, 0.09);
  --warm: #b8956a;
  --sky: #e8f2fc;
  --ice: #f4f8fd;
  --max: 1160px;
  --font: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --display: "Sora", "Noto Sans SC", "PingFang SC", sans-serif;
  --radius: 10px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

*,
*::before,
*::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--white);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; height: auto; }
button, input, textarea, select { font: inherit; }
ul { margin: 0; padding: 0; list-style: none; }

.wrap {
  width: min(100% - 48px, var(--max));
  margin-inline: auto;
}

/* —— Nav —— */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s, background 0.25s, backdrop-filter 0.25s, box-shadow 0.25s;
}
.site-nav.is-scrolled { border-bottom-color: var(--line); }

/* Homepage: transparent nav over hero until scroll */
body.nav-over-hero .hero--interactive {
  margin-top: -72px;
}
body.nav-over-hero .hero__inner {
  padding-top: 304px; /* keep title clearance under transparent nav */
}
body.nav-over-hero .site-nav:not(.is-scrolled) {
  background: transparent;
  backdrop-filter: none;
  border-bottom-color: transparent;
  box-shadow: none;
}
body.nav-over-hero .site-nav.is-scrolled,
body.nav-over-hero .site-nav.is-menu-open {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(14px);
  border-bottom-color: var(--line);
}
.site-nav__inner {
  display: flex;
  align-items: center;
  gap: 28px;
  height: 72px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
  font-family: "Douyin Sans", "Noto Sans SC", "PingFang SC", sans-serif;
  font-weight: 700;
  font-size: 28px;
  letter-spacing: 0.06em;
  line-height: 36px;
  height: 36px;
  color: #0153a7;
  white-space: nowrap;
}
.brand--logo {
  height: auto;
  min-height: 36px;
  letter-spacing: 0;
}
.brand__logo {
  display: block;
  height: 36px;
  width: auto;
  max-width: 180px;
  object-fit: contain;
}
.brand:hover { color: #0153a7; }
.brand__domain {
  font-family: var(--display);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.06em;
  line-height: 1;
  color: var(--muted);
  position: relative;
  top: 4px;
}

@media (max-width: 640px) {
  .brand { font-size: 22px; }
  .brand__domain { font-size: 10px; }
}

.nav-menu {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 2px;
}
.nav-menu a {
  padding: 9px 13px;
  font-size: 14px;
  color: var(--ink-soft);
  border-radius: 8px;
  transition: color 0.2s, background 0.2s;
}
.nav-menu a:hover,
.nav-menu a.is-active {
  color: var(--accent);
  background: var(--accent-soft);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  height: 38px;
  padding: 0 16px;
  margin-left: 8px;
  background: var(--accent);
  color: #fff !important;
  font-size: 13px;
  border-radius: 8px;
  white-space: nowrap;
  transition: background 0.2s, transform 0.2s;
}
.nav-cta:hover { background: var(--accent-2); transform: translateY(-1px); }

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  margin-left: auto;
  border: 0;
  background: transparent;
  cursor: pointer;
  padding: 10px;
}
.nav-toggle span {
  display: block;
  height: 2px;
  margin: 6px 0;
  background: var(--ink);
  border-radius: 2px;
  transition: transform 0.25s var(--ease), opacity 0.2s;
}
.nav-toggle.is-open span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.nav-toggle.is-open span:nth-child(2) { opacity: 0; }
.nav-toggle.is-open span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

.nav-mobile {
  display: none;
  flex-direction: column;
  padding: 8px 24px 20px;
  border-bottom: 1px solid var(--line);
  background: #fff;
}
.nav-mobile.is-open { display: flex; }
.nav-mobile a {
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  font-size: 15px;
}
.nav-mobile a:last-child { border-bottom: 0; color: var(--accent); font-weight: 600; }

/* —— Buttons —— */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 48px;
  padding: 0 24px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  border: 1px solid transparent;
  transition: background 0.2s, color 0.2s, border-color 0.2s, transform 0.2s var(--ease);
  cursor: pointer;
}
.btn:hover { transform: translateY(-1px); }
.btn--light { background: #fff; color: var(--accent); }
.btn--light:hover { background: var(--sky); }
.btn--ghost {
  border-color: rgba(255, 255, 255, 0.4);
  color: #fff;
  background: transparent;
}
.btn--ghost:hover { background: rgba(255, 255, 255, 0.08); }
.btn--solid { background: var(--accent); color: #fff; }
.btn--solid:hover { background: var(--accent-2); }
.btn--line { border-color: var(--line); color: var(--ink-soft); background: transparent; }
.btn--line:hover { border-color: var(--accent); color: var(--accent); }

/* —— Hero (interactive, inspired by soft particle / float UI) —— */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: flex-start;
  justify-content: flex-start;
  color: var(--ink);
  overflow: hidden;
  background:
    radial-gradient(ellipse 80% 60% at 70% 20%, rgba(77, 176, 255, 0.18), transparent 55%),
    radial-gradient(ellipse 60% 50% at 10% 80%, rgba(1, 83, 167, 0.08), transparent 50%),
    linear-gradient(180deg, #f4f8fd 0%, #eef5fb 45%, #e8f2fc 100%);
}
.hero--interactive .hero__media,
.hero__media { display: none; }
.hero::after { display: none; }

.hero__fx {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}
.hero__orb {
  position: absolute;
  width: min(640px, 70vw);
  height: min(640px, 70vw);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(1, 83, 167, 0.18) 0%, rgba(26, 138, 232, 0.08) 42%, transparent 70%);
  left: -20%;
  top: -25%;
  transform: translate3d(0, 0, 0);
  transition: left 1.8s cubic-bezier(0.22, 1, 0.36, 1), top 1.8s cubic-bezier(0.22, 1, 0.36, 1);
  will-change: left, top;
}
.hero__cosmos { position: absolute; inset: 0; pointer-events: none; }

/* —— Supercluster (home) —— */
.hero__supercluster,
.hero__cluster,
.hero__filament,
.hero__nodes {
  position: absolute;
  overflow: visible;
  opacity: 0.88;
  animation: hero-float 9s ease-in-out infinite;
}
.hero__cosmo-filament {
  stroke: rgba(1, 83, 167, 0.22);
  stroke-width: 1.1;
  fill: none;
  stroke-linecap: round;
}
.hero__cosmo-filament--soft {
  stroke: rgba(1, 83, 167, 0.12);
  stroke-width: 0.9;
}
.hero__cosmo-glow {
  fill: rgba(26, 127, 212, 0.1);
  stroke: none;
}
.hero__cosmo-glow--soft {
  fill: rgba(1, 83, 167, 0.06);
}
.hero__cosmo-node {
  fill: rgba(1, 83, 167, 0.48);
  stroke: rgba(120, 180, 255, 0.28);
  stroke-width: 0.5;
}
.hero__cosmo-node--mid {
  fill: rgba(26, 127, 212, 0.62);
  stroke: rgba(100, 170, 240, 0.35);
}
.hero__cosmo-node--core {
  fill: rgba(26, 127, 212, 0.72);
  stroke: rgba(80, 170, 255, 0.4);
  stroke-width: 0.7;
  filter: drop-shadow(0 0 5px rgba(80, 170, 255, 0.4));
}
.hero__cosmo-label {
  fill: rgba(1, 83, 167, 0.42);
  font-size: 7px;
  font-family: "Noto Sans SC", "PingFang SC", sans-serif;
  letter-spacing: 0.04em;
}
.hero__cosmo-label--soft {
  fill: rgba(1, 83, 167, 0.32);
  font-size: 6.5px;
}
.hero__supercluster {
  width: min(300px, 42vw);
  top: 8%; left: 2%;
  animation: hero-float 10s ease-in-out infinite, hero-web-drift 32s ease-in-out infinite;
  transform-origin: center;
}
.hero__cluster {
  width: min(180px, 26vw);
  top: 14%; right: 5%;
  animation-duration: 11s;
  animation-delay: 0.8s;
}
.hero__filament {
  width: min(140px, 20vw);
  bottom: 16%; left: 10%;
  animation-duration: 9s;
  animation-delay: 1.4s;
}
.hero__nodes {
  width: min(100px, 15vw);
  bottom: 20%; right: 8%;
  animation-duration: 8s;
  animation-delay: 2s;
}

/* —— Solar / galaxy (inner pages) —— */
.hero__orbit,
.hero__galaxy,
.hero__planet,
.hero__moon {
  position: absolute;
  overflow: visible;
  opacity: 0.88;
  animation: hero-float 9s ease-in-out infinite;
}
.hero__cosmo-ring {
  stroke: rgba(1, 83, 167, 0.22);
  stroke-width: 1.1;
  fill: none;
}
.hero__cosmo-ring--faint { stroke: rgba(1, 83, 167, 0.12); }
.hero__cosmo-ring--planet {
  stroke: rgba(1, 83, 167, 0.28);
  stroke-width: 1.4;
}
.hero__cosmo-ring--planet-inner {
  stroke: rgba(1, 83, 167, 0.16);
  stroke-width: 1;
}
.hero__cosmo-ring--planet-front {
  stroke: rgba(26, 127, 212, 0.4);
  stroke-width: 1.6;
  fill: none;
  stroke-linecap: round;
}
.hero__cosmo-sun {
  fill: rgba(26, 127, 212, 0.55);
  filter: drop-shadow(0 0 8px rgba(80, 170, 255, 0.45));
}
.hero__cosmo-sun-glow {
  fill: none;
  stroke: rgba(80, 170, 255, 0.28);
  stroke-width: 1.2;
}
.hero__cosmo-planet {
  fill: rgba(1, 83, 167, 0.45);
  stroke: rgba(120, 180, 255, 0.3);
  stroke-width: 0.6;
}
.hero__cosmo-planet--mid { fill: rgba(26, 127, 212, 0.55); }
.hero__cosmo-planet--far {
  fill: rgba(1, 83, 167, 0.38);
  stroke: rgba(100, 170, 240, 0.35);
}
.hero__cosmo-planet--body {
  fill: rgba(1, 83, 167, 0.42);
  stroke: rgba(120, 180, 255, 0.35);
  stroke-width: 1;
}
.hero__cosmo-core {
  fill: rgba(26, 127, 212, 0.28);
  stroke: rgba(80, 170, 255, 0.35);
  stroke-width: 1;
}
.hero__cosmo-arm {
  stroke: rgba(1, 83, 167, 0.26);
  stroke-width: 1.4;
  fill: none;
  stroke-linecap: round;
}
.hero__cosmo-arm--soft {
  stroke: rgba(1, 83, 167, 0.14);
  stroke-width: 1;
}
.hero__cosmo-star {
  fill: rgba(1, 83, 167, 0.5);
}
.hero__cosmo-star--bright {
  fill: rgba(26, 127, 212, 0.85);
  filter: drop-shadow(0 0 4px rgba(80, 170, 255, 0.55));
}
.hero__cosmo-crater {
  fill: rgba(1, 83, 167, 0.18);
  stroke: none;
}
.hero__orbit {
  width: min(260px, 34vw);
  top: 10%; left: 4%;
  animation: hero-float 10s ease-in-out infinite, hero-orbit-drift 28s ease-in-out infinite;
  transform-origin: center;
}
.hero__galaxy {
  width: min(200px, 28vw);
  top: 14%; right: 6%;
  animation-duration: 11s;
  animation-delay: 0.8s;
}
.hero__planet {
  width: min(130px, 18vw);
  bottom: 16%; left: 12%;
  animation-duration: 9s;
  animation-delay: 1.4s;
}
.hero__moon {
  width: min(90px, 14vw);
  bottom: 20%; right: 9%;
  animation-duration: 8s;
  animation-delay: 2s;
}
.hero__particles {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}

.hero__inner {
  position: relative;
  z-index: 1;
  width: min(100% - 48px, var(--max));
  margin: 0 auto;
  padding: 232px 0 80px;
  align-self: flex-start;
  animation: rise 0.9s var(--ease) both;
}
.hero__title {
  font-family: "Douyin Sans", "Noto Sans SC", "PingFang SC", sans-serif;
  font-size: clamp(32px, 5.2vw, 56px);
  font-weight: 700;
  letter-spacing: 0.06em;
  line-height: 1.15;
  margin: 0 0 16px;
  max-width: 12em;
  background: linear-gradient(120deg, #062a52 0%, #0153a7 55%, #0a6ecf 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-shadow: none !important;
  filter: none;
  font-synthesis: none;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: geometricPrecision;
}
.hero__desc {
  margin: 0 0 32px;
  max-width: min(100%, 52em);
  color: var(--muted);
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.65;
  text-shadow: none;
}
/* Keep the four service items on one row; scroll slightly on very narrow screens */
.hero__desc-line {
  display: block;
  white-space: nowrap;
  max-width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}
.hero__desc-line::-webkit-scrollbar {
  display: none;
}
.hero__desc-rest {
  display: block;
  margin-top: 0.2em;
}
.hero__actions { display: flex; flex-wrap: wrap; gap: 12px; }

@keyframes rise {
  from { opacity: 0; transform: translateY(22px); }
  to { opacity: 1; transform: none; }
}
@keyframes hero-ken {
  from { transform: scale(1.04) translate3d(0, 0, 0); }
  to { transform: scale(1.1) translate3d(-1.5%, 1%, 0); }
}
@keyframes hero-float {
  0%, 100% { translate: 0 0; }
  50% { translate: 0 -14px; }
}
@keyframes hero-web-drift {
  0%, 100% { rotate: -4deg; translate: 0 0; }
  50% { rotate: 4deg; translate: 6px -4px; }
}
@keyframes hero-orbit-drift {
  0%, 100% { rotate: -8deg; }
  50% { rotate: 8deg; }
}

/* —— Page hero —— */
.page-hero {
  position: relative;
  padding: 88px 0 72px;
  color: #fff;
  background:
    radial-gradient(ellipse at 80% 0%, rgba(100, 180, 255, 0.35), transparent 50%),
    linear-gradient(145deg, #0a4a8f 0%, #0153a7 55%, #1a6ec4 100%);
  overflow: hidden;
}
.page-hero--interactive {
  background:
    radial-gradient(ellipse 70% 80% at 78% 10%, rgba(120, 200, 255, 0.28), transparent 55%),
    radial-gradient(ellipse 50% 60% at 8% 90%, rgba(1, 40, 100, 0.35), transparent 50%),
    linear-gradient(145deg, #0a4a8f 0%, #0153a7 55%, #1a6ec4 100%);
}
.page-hero--interactive .hero__fx { z-index: 0; }
.page-hero--interactive .hero__orb {
  width: min(520px, 70vw);
  height: min(520px, 70vw);
  background: radial-gradient(circle, rgba(140, 220, 255, 0.35) 0%, rgba(80, 170, 255, 0.14) 40%, transparent 70%);
}
.page-hero--interactive .hero__cosmo-filament {
  stroke: rgba(200, 230, 255, 0.34);
}
.page-hero--interactive .hero__cosmo-filament--soft {
  stroke: rgba(200, 230, 255, 0.18);
}
.page-hero--interactive .hero__cosmo-glow {
  fill: rgba(180, 220, 255, 0.16);
}
.page-hero--interactive .hero__cosmo-glow--soft {
  fill: rgba(180, 220, 255, 0.08);
}
.page-hero--interactive .hero__cosmo-node {
  fill: rgba(220, 240, 255, 0.72);
  stroke: rgba(180, 220, 255, 0.4);
}
.page-hero--interactive .hero__cosmo-node--mid {
  fill: rgba(235, 248, 255, 0.88);
  stroke: rgba(200, 230, 255, 0.5);
}
.page-hero--interactive .hero__cosmo-node--core {
  fill: #fff;
  stroke: rgba(210, 235, 255, 0.65);
  filter: drop-shadow(0 0 8px rgba(180, 230, 255, 0.75));
}
.page-hero--interactive .hero__cosmo-label {
  fill: rgba(220, 240, 255, 0.55);
}
.page-hero--interactive .hero__cosmo-label--soft {
  fill: rgba(200, 230, 255, 0.4);
}
.page-hero--interactive .hero__cosmo-ring {
  stroke: rgba(200, 230, 255, 0.32);
}
.page-hero--interactive .hero__cosmo-ring--faint {
  stroke: rgba(200, 230, 255, 0.16);
}
.page-hero--interactive .hero__cosmo-ring--planet {
  stroke: rgba(210, 235, 255, 0.4);
}
.page-hero--interactive .hero__cosmo-ring--planet-inner {
  stroke: rgba(200, 230, 255, 0.22);
}
.page-hero--interactive .hero__cosmo-ring--planet-front {
  stroke: rgba(230, 245, 255, 0.55);
}
.page-hero--interactive .hero__cosmo-sun {
  fill: rgba(230, 245, 255, 0.85);
  filter: drop-shadow(0 0 10px rgba(180, 230, 255, 0.7));
}
.page-hero--interactive .hero__cosmo-sun-glow {
  stroke: rgba(180, 230, 255, 0.4);
}
.page-hero--interactive .hero__cosmo-planet {
  fill: rgba(220, 240, 255, 0.7);
  stroke: rgba(180, 220, 255, 0.45);
}
.page-hero--interactive .hero__cosmo-planet--mid {
  fill: rgba(240, 250, 255, 0.85);
}
.page-hero--interactive .hero__cosmo-planet--far,
.page-hero--interactive .hero__cosmo-planet--body {
  fill: rgba(210, 235, 255, 0.65);
  stroke: rgba(190, 225, 255, 0.5);
}
.page-hero--interactive .hero__cosmo-core {
  fill: rgba(200, 230, 255, 0.35);
  stroke: rgba(220, 240, 255, 0.55);
}
.page-hero--interactive .hero__cosmo-arm {
  stroke: rgba(200, 230, 255, 0.38);
}
.page-hero--interactive .hero__cosmo-arm--soft {
  stroke: rgba(200, 230, 255, 0.2);
}
.page-hero--interactive .hero__cosmo-star {
  fill: rgba(230, 245, 255, 0.75);
}
.page-hero--interactive .hero__cosmo-star--bright {
  fill: #fff;
  filter: drop-shadow(0 0 6px rgba(180, 230, 255, 0.8));
}
.page-hero--interactive .hero__cosmo-crater {
  fill: rgba(255, 255, 255, 0.18);
}
.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background:
    linear-gradient(90deg, transparent 60%, rgba(255, 255, 255, 0.05)),
    repeating-linear-gradient(
      -12deg,
      transparent,
      transparent 40px,
      rgba(255, 255, 255, 0.02) 40px,
      rgba(255, 255, 255, 0.02) 41px
    );
  pointer-events: none;
}
.page-hero--interactive::before { opacity: 0.55; }
.page-hero .wrap { position: relative; z-index: 1; }
.page-hero .kicker { color: #b8d9f5; }
.page-hero h1 {
  font-family: var(--display);
  font-size: clamp(32px, 4.5vw, 48px);
  font-weight: 700;
  margin: 0 0 14px;
  letter-spacing: 0.02em;
}
.page-hero p {
  margin: 0;
  max-width: 36em;
  color: rgba(255, 255, 255, 0.75);
  font-size: 15px;
}

/* —— Sections —— */
.section { padding: 88px 0; }
.section--paper {
  background:
    linear-gradient(180deg, #f4f8fd 0%, #e6f0fa 100%);
}
.section--ink {
  background: linear-gradient(160deg, #0a4a8f 0%, #0153a7 100%);
  color: #fff;
}
.section--ink .lead { color: rgba(255, 255, 255, 0.72); }
.section--ink .kicker { color: #b8d9f5; }

.kicker {
  font-family: var(--display);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent-2);
  margin: 0 0 10px;
  font-weight: 600;
}
.h2 {
  font-family: var(--display);
  font-size: clamp(26px, 3.2vw, 36px);
  font-weight: 700;
  margin: 0 0 12px;
  line-height: 1.25;
}
.lead {
  margin: 0 0 40px;
  color: var(--muted);
  max-width: 52em;
  font-size: 15px;
}
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 40px;
}
.section-head .lead { margin: 0; }
.more-link {
  flex-shrink: 0;
  font-size: 14px;
  color: var(--accent);
  font-weight: 500;
  white-space: nowrap;
}
.more-link:hover { color: var(--accent-2); }

/* —— Pillars / grids —— */
.pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.pillar {
  position: relative;
  padding: 32px 22px 34px;
  margin: 0;
  background: linear-gradient(180deg, #f7fbff 0%, var(--white) 48%);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  border-top: 4px solid var(--accent);
  box-shadow: 0 8px 24px rgba(1, 83, 167, 0.06);
  transition: border-color 0.25s, box-shadow 0.25s var(--ease), transform 0.25s var(--ease);
}
.pillar:hover {
  border-color: var(--accent-2);
  border-top-color: var(--accent);
  box-shadow: 0 14px 36px rgba(1, 83, 167, 0.12);
  transform: translateY(-3px);
}
.pillar__idx {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 48px;
  height: 48px;
  padding: 0 14px;
  margin-bottom: 22px;
  font-family: var(--display);
  font-size: 22px;
  letter-spacing: 0.02em;
  color: #fff;
  background: var(--accent);
  border-radius: 10px;
  font-weight: 700;
  box-shadow: 0 6px 16px rgba(1, 83, 167, 0.22);
}
.pillar h3 {
  font-family: var(--display);
  font-size: clamp(16px, 1.45vw, 20px);
  margin: 0 0 14px;
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--ink);
  white-space: nowrap;
}
.pillar p {
  margin: 0 0 22px;
  color: var(--muted);
  font-size: 15px;
}
.pillar a {
  font-size: 15px;
  color: var(--accent);
  font-weight: 600;
}
.pillar a:hover { color: var(--accent-2); }

.biz-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}
.biz-card {
  position: relative;
  padding: 42px 38px 38px;
  background: linear-gradient(180deg, #f7fbff 0%, var(--white) 42%);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  border-top: 4px solid var(--accent);
  overflow: hidden;
  box-shadow: 0 8px 24px rgba(1, 83, 167, 0.06);
  transition: border-color 0.25s, box-shadow 0.25s var(--ease), transform 0.25s var(--ease);
}
.biz-card:hover {
  border-color: var(--accent-2);
  border-top-color: var(--accent);
  box-shadow: 0 16px 40px rgba(1, 83, 167, 0.12);
  transform: translateY(-4px);
}
.biz-card__letter {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  margin: 0 0 20px;
  font-family: var(--display);
  font-size: 24px;
  font-weight: 700;
  line-height: 1;
  color: #fff;
  background: var(--accent);
  border-radius: 12px;
  position: relative;
  z-index: 1;
  box-shadow: 0 6px 16px rgba(1, 83, 167, 0.22);
}
.biz-card::after {
  content: attr(data-letter);
  font-family: var(--display);
  font-size: 140px;
  font-weight: 700;
  line-height: 1;
  color: rgba(1, 83, 167, 0.07);
  position: absolute;
  top: 4px;
  right: 8px;
  pointer-events: none;
}
.biz-card h3 {
  position: relative;
  z-index: 1;
  margin: 0 0 16px;
  font-family: var(--display);
  font-size: clamp(30px, 3.4vw, 38px);
  font-weight: 700;
  line-height: 1.28;
  color: var(--ink);
}
.biz-card p {
  position: relative;
  z-index: 1;
  margin: 0 0 22px;
  color: var(--muted);
  font-size: 15px;
}
.biz-card .tag-row {
  position: relative;
  z-index: 1;
}
.tag-row { display: flex; flex-wrap: wrap; gap: 8px; }
.tag {
  display: inline-flex;
  padding: 4px 10px;
  font-size: 12px;
  color: var(--ink-soft);
  background: var(--paper);
  border-radius: 999px;
}

/* —— Products —— */
.product-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 24px;
}
.product {
  padding: 40px 36px;
  border-radius: var(--radius);
  background: var(--white);
  border: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: transform 0.25s var(--ease), border-color 0.25s;
}
.product:hover {
  transform: translateY(-3px);
  border-color: rgba(1, 83, 167, 0.35);
}
.product--feature {
  background:
    linear-gradient(155deg, #024a96 0%, #0153a7 45%, #1a7fd4 100%);
  color: #fff;
  border: 0;
  min-height: 320px;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.12),
    0 12px 32px rgba(1, 83, 167, 0.18);
}
.badge {
  display: inline-flex;
  align-self: flex-start;
  padding: 4px 10px;
  font-size: 11px;
  letter-spacing: 0.08em;
  border-radius: 999px;
  background: rgba(196, 165, 116, 0.2);
  color: var(--warm);
  font-weight: 600;
}
.product--feature .badge {
  background: rgba(255, 255, 255, 0.18);
  color: #e8f4ff;
}
.product h3 {
  margin: 0;
  font-size: 24px;
  font-weight: 700;
}
.product p { margin: 0; font-size: 14px; color: var(--muted); }
.product.product--feature > p {
  color: #f2f6f9;
  font-size: 15px;
  line-height: 1.75;
  font-weight: 400;
}
.chip-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: auto; }
.chip {
  padding: 5px 11px;
  font-size: 12px;
  border-radius: 6px;
  background: var(--paper);
  color: var(--ink-soft);
}
.product.product--feature .chip {
  background: rgba(255, 255, 255, 0.2);
  color: #fff;
  font-weight: 500;
  border: 1px solid rgba(255, 255, 255, 0.28);
}
.product .btn { margin-top: 8px; align-self: flex-start; }

/* —— Cases —— */
.case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.case-card {
  display: flex;
  flex-direction: column;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--white);
  transition: transform 0.25s var(--ease), border-color 0.25s;
}
.case-card:hover {
  transform: translateY(-4px);
  border-color: rgba(1, 83, 167, 0.3);
}
.case-card__media {
  aspect-ratio: 16 / 10;
  background-color: #fff;
  background-position: center;
  background-size: contain;
  background-repeat: no-repeat;
  background-origin: content-box;
  padding: 5px;
  position: relative;
}
.case-card__media::after {
  content: "";
  position: absolute;
  inset: 5px;
  background: linear-gradient(180deg, transparent 50%, rgba(1, 55, 120, 0.2));
  pointer-events: none;
}
.case-card__body { padding: 22px 22px 26px; flex: 1; display: flex; flex-direction: column; }
.case-card__cat {
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-2);
  font-weight: 600;
  margin-bottom: 8px;
}
.case-card h3 {
  margin: 0 0 10px;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.35;
}
.case-card p {
  margin: 0;
  font-size: 13px;
  color: var(--muted);
  flex: 1;
}
.case-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  color: var(--muted);
}
.case-detail {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 40px;
  align-items: center;
  padding: 48px 0;
  border-bottom: 1px solid var(--line);
}
.case-detail:last-child { border-bottom: 0; }
.case-detail:nth-child(even) { direction: rtl; }
.case-detail:nth-child(even) > * { direction: ltr; }
.case-detail__media {
  border-radius: var(--radius);
  overflow: hidden;
  background: #fff;
  padding: 5px;
  border: 1px solid var(--line);
  aspect-ratio: 16 / 10;
}
.case-detail__media img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
  display: block;
}
.case-detail__cat {
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-2);
  font-weight: 600;
  margin-bottom: 10px;
}
.case-detail h3 {
  margin: 0 0 14px;
  font-size: 26px;
  font-weight: 700;
}
.case-detail p {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 14px;
}
.feat-list {
  display: grid;
  gap: 8px;
  margin: 0 0 18px;
}
.feat-list li {
  position: relative;
  padding-left: 16px;
  font-size: 13px;
  color: var(--ink-soft);
}
.feat-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-2);
}

/* —— About —— */
.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 48px;
  align-items: start;
}
.about-block + .about-block { margin-top: 36px; }
.about-block h3 {
  margin: 0 0 12px;
  font-size: 20px;
}
.about-block p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
}
.stat-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.stat {
  padding: 28px 24px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.stat strong {
  display: block;
  font-family: var(--display);
  font-size: 32px;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 6px;
  letter-spacing: -0.02em;
}
.stat span {
  font-size: 13px;
  color: var(--muted);
}

/* —— Home: 为什么选择我们 —— */
.why-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.why-card {
  text-align: center;
  padding: 36px 22px 32px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: 0 8px 24px rgba(12, 26, 46, 0.05);
}
.why-card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  margin-bottom: 18px;
  border-radius: 12px;
  background: var(--accent-soft);
  color: var(--accent);
}
.why-card__title {
  margin: 0 0 10px;
  font-size: 17px;
  font-weight: 700;
  color: var(--ink);
}
.why-card__desc {
  margin: 0;
  font-size: 13px;
  color: var(--muted);
  line-height: 1.7;
}

/* —— About: centered section intro —— */
.section-intro {
  text-align: center;
  max-width: 40em;
  margin: 0 auto 56px;
}
.section-intro .h2 { margin-bottom: 12px; }
.section-intro .lead {
  margin: 0 auto;
  max-width: none;
}

/* —— About: timeline —— */
.timeline {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
  max-width: 860px;
  margin-inline: auto;
}
.timeline::before {
  content: "";
  position: absolute;
  top: 8px;
  bottom: 8px;
  left: 50%;
  width: 1px;
  background: var(--line);
  transform: translateX(-50%);
}
.timeline__item {
  position: relative;
  width: 50%;
  padding: 0 40px 72px;
  box-sizing: border-box;
}
.timeline__item:last-child { padding-bottom: 0; }
.timeline__item::after {
  content: "";
  position: absolute;
  top: 8px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  z-index: 1;
}
.timeline__item--left {
  margin-right: auto;
  text-align: right;
  padding-right: 48px;
  padding-left: 0;
}
.timeline__item--left::after {
  right: 0;
  transform: translateX(50%);
}
.timeline__item--right {
  margin-left: auto;
  text-align: left;
  padding-left: 48px;
  padding-right: 0;
}
.timeline__item--right::after {
  left: 0;
  transform: translateX(-50%);
}
.timeline__year {
  display: block;
  font-family: var(--display);
  font-size: 22px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -0.02em;
  margin-bottom: 8px;
  line-height: 1.2;
}
.timeline__title {
  margin: 0 0 10px;
  font-size: 18px;
  font-weight: 700;
  color: var(--ink);
  line-height: 1.35;
}
.timeline__desc {
  margin: 0;
  font-size: 14px;
  color: var(--muted);
  line-height: 1.7;
}

/* —— About: values —— */
.value-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.value-card {
  text-align: center;
  padding: 36px 22px 32px;
  background: var(--ice);
  border: 1px solid var(--line);
  border-radius: 14px;
}
.value-card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  margin-bottom: 18px;
  border-radius: 12px;
  background: var(--accent-soft);
  color: var(--accent);
}
.value-card__title {
  margin: 0 0 10px;
  font-size: 17px;
  font-weight: 700;
  color: var(--ink);
}
.value-card__desc {
  margin: 0;
  font-size: 13px;
  color: var(--muted);
  line-height: 1.7;
}

.service-list {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}
.service-item {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 24px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}
.service-item h4 {
  margin: 0;
  font-size: 15px;
  color: var(--accent);
}
.service-item p {
  margin: 0;
  font-size: 14px;
  color: var(--muted);
}

/* —— Clients —— */
.clients {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.client {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 88px;
  padding: 16px 20px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.client img {
  max-height: 48px;
  width: auto;
  max-width: 100%;
  object-fit: contain;
  filter: grayscale(1);
  opacity: 0.75;
  transition: filter 0.25s, opacity 0.25s;
}
.client:hover img {
  filter: none;
  opacity: 1;
}
.clients-wall {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
  background: #fff;
}
.clients-wall img {
  width: 100%;
  object-fit: cover;
}

/* —— Contact —— */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}
.contact-dl {
  display: grid;
  gap: 22px;
}
.contact-dl dt {
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 6px;
  font-weight: 600;
}
.contact-dl dd {
  margin: 0;
  font-size: 17px;
  font-weight: 500;
  color: var(--ink);
}
.contact-dl a:hover { color: var(--accent); }
.contact-panel {
  padding: 36px 32px;
  background: var(--paper);
  border-radius: var(--radius);
  border: 1px solid var(--line);
}
.contact-panel h3 {
  margin: 0 0 16px;
  font-size: 20px;
}
.contact-panel ul { display: grid; gap: 14px; }
.contact-panel li {
  font-size: 14px;
  color: var(--muted);
  padding-left: 16px;
  position: relative;
}
.contact-panel li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}
.contact-panel strong { color: var(--ink); }
.contact-form {
  display: grid;
  gap: 14px;
  margin-top: 28px;
}
.contact-form label {
  display: grid;
  gap: 6px;
  font-size: 13px;
  color: var(--ink-soft);
  font-weight: 500;
}
.contact-form input,
.contact-form textarea,
.contact-form select {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--ink);
  outline: none;
  transition: border-color 0.2s;
}
.contact-form input:focus,
.contact-form textarea:focus,
.contact-form select:focus {
  border-color: var(--accent-2);
}
.contact-form textarea { min-height: 120px; resize: vertical; }
.captcha-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
  align-items: end;
}
.captcha-row__field {
  display: grid;
  gap: 6px;
  font-size: 13px;
  color: var(--ink-soft);
  font-weight: 500;
}
.captcha-row__hint {
  font-size: 12px;
  font-weight: 400;
  color: var(--muted);
}
.captcha-row__hint strong {
  color: var(--ink);
  font-weight: 600;
  letter-spacing: 0.04em;
  font-variant-numeric: tabular-nums;
}
.captcha-refresh {
  appearance: none;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--muted);
  border-radius: 8px;
  padding: 12px 14px;
  font-size: 13px;
  cursor: pointer;
  white-space: nowrap;
  transition: border-color 0.2s, color 0.2s;
}
.captcha-refresh:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.form-note {
  font-size: 12px;
  color: var(--muted);
  margin: 0;
}

/* layer.msg-style toast */
.site-toast {
  position: fixed;
  left: 50%;
  top: 42%;
  z-index: 10000;
  max-width: min(86vw, 360px);
  padding: 14px 22px;
  border-radius: 4px;
  background: rgba(0, 0, 0, 0.72);
  color: #fff;
  font-size: 14px;
  line-height: 1.5;
  text-align: center;
  letter-spacing: 0.02em;
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.18);
  pointer-events: none;
  transform: translate(-50%, -40%);
  opacity: 0;
  transition: opacity 0.2s ease, transform 0.2s ease;
}
.site-toast.is-in {
  opacity: 1;
  transform: translate(-50%, -50%);
}
.site-toast.is-out {
  opacity: 0;
  transform: translate(-50%, -56%);
}
.site-toast--success {
  background: rgba(15, 28, 46, 0.88);
}
.site-toast--error {
  background: rgba(160, 40, 40, 0.9);
}

/* Online customer service float */
.cs-float {
  position: fixed;
  right: 22px;
  bottom: 28px;
  z-index: 9990;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 48px;
  padding: 0 16px 0 12px;
  border-radius: 999px;
  background: linear-gradient(145deg, #1a6ec4 0%, #0153a7 100%);
  color: #fff !important;
  text-decoration: none !important;
  box-shadow: 0 10px 28px rgba(1, 83, 167, 0.35);
  transition: transform 0.2s var(--ease), box-shadow 0.2s;
}
.cs-float:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 32px rgba(1, 83, 167, 0.42);
  color: #fff !important;
}
.cs-float__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.16);
}
.cs-float__text {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
  white-space: nowrap;
}
@media (max-width: 640px) {
  .cs-float {
    right: 14px;
    bottom: 18px;
    padding: 0 12px 0 10px;
    min-height: 44px;
  }
  .cs-float__text { font-size: 13px; }
}
.slogan {
  margin-top: 40px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
  font-family: var(--display);
  font-size: 20px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--accent);
}

/* —— CTA band —— */
.cta-band {
  padding: 72px 0;
  text-align: center;
  background:
    radial-gradient(ellipse at 50% 0%, rgba(120, 190, 255, 0.4), transparent 55%),
    linear-gradient(160deg, #0a4a8f 0%, #0153a7 55%, #1a6ec4 100%);
  color: #fff;
}
.cta-band h2 {
  font-family: var(--display);
  font-size: clamp(24px, 3vw, 34px);
  margin: 0 0 12px;
  font-weight: 700;
}
.cta-band p {
  margin: 0 auto 28px;
  max-width: 40em;
  color: rgba(255, 255, 255, 0.7);
  font-size: 15px;
}
.cta-band__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}

/* —— Footer —— */
.site-footer {
  background: #062a52;
  color: rgba(255, 255, 255, 0.7);
  padding: 56px 0 28px;
  font-size: 13px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 40px;
}
.footer-brand {
  font-family: var(--display);
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.04em;
  margin-bottom: 12px;
}
.footer-brand img { height: 32px; width: auto; margin-bottom: 12px; }
.site-footer h4 {
  margin: 0 0 14px;
  font-size: 13px;
  color: #fff;
  letter-spacing: 0.08em;
}
.site-footer a {
  display: block;
  padding: 5px 0;
  color: rgba(255, 255, 255, 0.65);
  transition: color 0.2s;
}
.site-footer a:hover { color: #fff; }
.footer-copy {
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  justify-content: space-between;
  color: rgba(255, 255, 255, 0.45);
  font-size: 12px;
}
.footer-copy__legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 16px;
}
.footer-copy a {
  display: inline;
  padding: 0;
  color: rgba(255, 255, 255, 0.45);
}
.footer-copy a:hover { color: #fff; }

/* —— Reveal —— */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
.reveal.is-in {
  opacity: 1;
  transform: none;
}

/* —— Responsive —— */
@media (max-width: 960px) {
  .pillars,
  .case-grid,
  .product-grid,
  .biz-grid,
  .about-grid,
  .contact-grid,
  .case-detail,
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .value-grid,
  .why-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .timeline::before {
    left: 12px;
    transform: none;
  }
  .timeline__item,
  .timeline__item--left,
  .timeline__item--right {
    width: 100%;
    margin: 0;
    text-align: left;
    padding: 0 0 56px 40px;
  }
  .timeline__item--left::after,
  .timeline__item--right::after {
    left: 12px;
    right: auto;
    transform: translateX(-50%);
  }
  .pillar,
  .biz-card {
    padding: 28px 24px 30px;
  }
  .pillar h3 {
    font-size: clamp(18px, 4.2vw, 22px);
    white-space: normal;
  }
  .biz-card h3 {
    font-size: clamp(24px, 6.5vw, 30px);
  }
  .biz-card::after {
    font-size: 96px;
  }
  .case-detail:nth-child(even) { direction: ltr; }
  .clients { grid-template-columns: repeat(2, 1fr); }
  .service-item { grid-template-columns: 1fr; gap: 8px; }
  .section-head { flex-direction: column; align-items: flex-start; }
  .nav-menu,
  .nav-cta { display: none; }
  .nav-toggle { display: block; }
}

@media (max-width: 640px) {
  .wrap { width: min(100% - 32px, var(--max)); }
  .section { padding: 64px 0; }
  .hero__inner { padding: 160px 0 64px; }
  body.nav-over-hero .hero__inner { padding-top: 232px; }
  .hero__desc-line { font-size: 0.9em; }
  .hero__supercluster { width: 168px; }
  .hero__cluster { width: 100px; }
  .hero__filament { width: 82px; }
  .hero__nodes { width: 60px; }
  .hero__cosmo-label { font-size: 8px; }
  .hero__orbit { width: 140px; }
  .hero__galaxy { width: 110px; }
  .hero__planet { width: 78px; }
  .hero__moon { width: 56px; }
  .page-hero { padding: 72px 0 56px; }
  .stat-row { grid-template-columns: 1fr; }
  .clients { grid-template-columns: 1fr 1fr; }
  .value-grid,
  .why-grid { grid-template-columns: 1fr; }
  .timeline__item,
  .timeline__item--left,
  .timeline__item--right {
    padding-bottom: 48px;
  }
}