/* ============================================================
   艺彤国际 · 动态版官网样式（website-v2）
   深色科技风 + Canvas 动效 + 3D 卡片 + 滚动动效
   ============================================================ */
* { margin: 0; padding: 0; box-sizing: border-box; }
:root {
  --bg: #060d1f;
  --bg2: #0a1730;
  --panel: rgba(15, 32, 63, .55);
  --line: rgba(94, 152, 255, .18);
  --cyan: #22d3ee;
  --blue: #3b82f6;
  --orange: #f59e0b;
  --text: #dbe7f8;
  --dim: #8ba3c7;
  --glow: 0 0 24px rgba(34, 211, 238, .35);
}
html { scroll-behavior: smooth; }
body {
  font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
  background: var(--bg); color: var(--text);
  font-size: 15px; line-height: 1.75; overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
.container { width: 1200px; max-width: 94%; margin: 0 auto; }
::selection { background: var(--cyan); color: #04121f; }

/* ---------- 滚动进度条 ---------- */
#progress { position: fixed; top: 0; left: 0; height: 3px; width: 0; z-index: 1200;
  background: linear-gradient(90deg, var(--blue), var(--cyan), var(--orange));
  box-shadow: 0 0 12px rgba(34,211,238,.8); }

/* ---------- 预加载 ---------- */
#loader { position: fixed; inset: 0; background: var(--bg); z-index: 2000;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 26px;
  transition: opacity .6s, visibility .6s; }
#loader.done { opacity: 0; visibility: hidden; }
#loader img { width: 84px; animation: pulse 1.6s ease-in-out infinite; }
#loader .bar { width: 220px; height: 3px; background: rgba(255,255,255,.08); border-radius: 2px; overflow: hidden; }
#loader .bar i { display: block; height: 100%; width: 40%; background: linear-gradient(90deg, var(--blue), var(--cyan));
  animation: load 1.2s ease-in-out infinite; border-radius: 2px; }
#loader p { color: var(--dim); font-size: 13px; letter-spacing: 3px; }
@keyframes pulse { 0%,100% { transform: scale(1); opacity: 1; } 50% { transform: scale(.88); opacity: .6; } }
@keyframes load { 0% { margin-left: -40%; } 100% { margin-left: 100%; } }

/* ---------- 导航 ---------- */
.topbar { background: rgba(4, 10, 24, .9); border-bottom: 1px solid var(--line);
  color: var(--dim); font-size: 13px; }
.topbar .container { display: flex; justify-content: space-between; align-items: center; height: 36px; }
.navbar { position: sticky; top: 0; z-index: 900; background: rgba(6, 13, 31, .82);
  backdrop-filter: blur(14px); border-bottom: 1px solid var(--line); transition: box-shadow .3s; }
.navbar.scrolled { box-shadow: 0 10px 30px rgba(0,0,0,.45); }
.navbar .container { display: flex; align-items: center; justify-content: space-between; height: 76px; }
.logo { display: flex; align-items: center; gap: 12px; }
.logo img { width: 50px; height: 50px; object-fit: contain; animation: float 4s ease-in-out infinite; }
.logo .cn { font-size: 20px; font-weight: 700; color: #fff; letter-spacing: 1px; }
.logo .en { font-size: 10.5px; color: var(--dim); letter-spacing: .6px; }
@keyframes float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-5px); } }
.nav { display: flex; }
.nav a { position: relative; padding: 8px 18px; font-size: 15.5px; color: var(--text); transition: color .25s; }
.nav a::after { content: ""; position: absolute; left: 50%; bottom: 0; width: 0; height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--blue)); transition: all .3s; transform: translateX(-50%); }
.nav a:hover, .nav a.active { color: #fff; }
.nav a:hover::after, .nav a.active::after { width: 70%; }

/* ---------- Hero ---------- */
.hero { position: relative; min-height: 86vh; display: flex; align-items: center; overflow: hidden; }
#sea { position: absolute; inset: 0; width: 100%; height: 100%; }
.hero .veil { position: absolute; inset: 0;
  background: radial-gradient(ellipse at 70% 30%, rgba(34,211,238,.14), transparent 55%),
              radial-gradient(ellipse at 15% 85%, rgba(59,130,246,.18), transparent 50%); }
.hero-inner { position: relative; z-index: 5; padding: 90px 0 64px; }
.hero .tagline { display: inline-flex; align-items: center; gap: 10px; padding: 7px 18px;
  border: 1px solid rgba(34,211,238,.4); border-radius: 999px; color: var(--cyan);
  font-size: 13.5px; letter-spacing: 3px; background: rgba(34,211,238,.07);
  animation: fadeUp 1s .2s both; }
.hero .tagline i { width: 8px; height: 8px; border-radius: 50%; background: var(--cyan);
  box-shadow: 0 0 10px var(--cyan); animation: blink 1.6s infinite; }
@keyframes blink { 0%,100% { opacity: 1; } 50% { opacity: .25; } }
.hero h1 { font-size: 56px; line-height: 1.25; color: #fff; margin: 26px 0 10px;
  text-shadow: 0 0 40px rgba(34,211,238,.35); animation: fadeUp 1s .35s both; }
.hero h1 .grad { background: linear-gradient(92deg, #6ee7ff, #3b82f6 55%, #f59e0b);
  -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero .typed { font-size: 20px; color: var(--dim); min-height: 34px; margin-bottom: 12px; animation: fadeUp 1s .5s both; }
.hero .typed b { color: var(--cyan); font-weight: 600; }
.hero .typed .cursor { display: inline-block; width: 2px; height: 1.1em; background: var(--cyan);
  vertical-align: -0.15em; margin-left: 4px; animation: blink 1s infinite; }
.hero .desc { max-width: 640px; color: var(--dim); animation: fadeUp 1s .62s both; }
.hero .cta { display: flex; gap: 18px; margin-top: 34px; animation: fadeUp 1s .75s both; }
.btn-glow { padding: 13px 38px; border-radius: 6px; font-size: 15.5px; color: #04121f; font-weight: 700;
  background: linear-gradient(92deg, var(--cyan), var(--blue)); position: relative; overflow: hidden;
  transition: transform .25s, box-shadow .25s; box-shadow: var(--glow); }
.btn-glow:hover { transform: translateY(-3px); box-shadow: 0 0 40px rgba(34,211,238,.65); }
.btn-ghost { padding: 13px 38px; border-radius: 6px; font-size: 15.5px; color: var(--text);
  border: 1px solid var(--line); transition: all .25s; }
.btn-ghost:hover { border-color: var(--cyan); color: #fff; background: rgba(34,211,238,.08); }
.hero .ship { position: absolute; right: 3%; bottom: 6%; z-index: 4; width: min(480px, 40vw);
  filter: drop-shadow(0 0 26px rgba(34,211,238,.25)); animation: sail 9s ease-in-out infinite; }
@keyframes sail { 0%,100% { transform: translateY(0) rotate(0deg); } 50% { transform: translateY(-16px) rotate(.6deg); } }
@keyframes fadeUp { from { opacity: 0; transform: translateY(34px); } to { opacity: 1; transform: none; } }

/* ---------- 通用板块 ---------- */
.section { padding: 58px 0; position: relative; }
.sec-head { text-align: center; margin-bottom: 34px; }
.sec-head .en { color: var(--cyan); font-size: 13px; letter-spacing: 5px; text-transform: uppercase; font-weight: 700; }
.sec-head h2 { font-size: 34px; color: #fff; margin: 8px 0 14px; }
.sec-head .line { width: 70px; height: 3px; margin: 0 auto 14px; border-radius: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--blue)); }
.sec-head p { color: var(--dim); }

/* 滚动出现动画 */
.rv { opacity: 0; transform: translateY(46px); transition: all .8s cubic-bezier(.16,.84,.32,1); }
.rv.in { opacity: 1; transform: none; }
.rv-l { opacity: 0; transform: translateX(-56px); transition: all .9s cubic-bezier(.16,.84,.32,1); }
.rv-r { opacity: 0; transform: translateX(56px); transition: all .9s cubic-bezier(.16,.84,.32,1); }
.rv-l.in, .rv-r.in { opacity: 1; transform: none; }
.d1 { transition-delay: .1s; } .d2 { transition-delay: .2s; } .d3 { transition-delay: .3s; }
.d4 { transition-delay: .4s; } .d5 { transition-delay: .5s; }

/* ---------- 数据条 ---------- */
.stats { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(10,23,48,.6), rgba(6,13,31,.2)); }
.stats .container { display: grid; grid-template-columns: repeat(4, 1fr); }
.stats .st { text-align: center; padding: 40px 10px; position: relative; }
.stats .st + .st::before { content: ""; position: absolute; left: 0; top: 22%; height: 56%; width: 1px;
  background: linear-gradient(180deg, transparent, var(--line), transparent); }
.stats b { font-size: 42px; font-weight: 700; color: #fff; font-family: Georgia, serif;
  background: linear-gradient(180deg, #fff, #6fb6ff); -webkit-background-clip: text; background-clip: text; color: transparent; }
.stats b em { font-style: normal; font-size: 20px; color: var(--cyan); -webkit-text-fill-color: var(--cyan); }
.stats p { color: var(--dim); font-size: 14px; margin-top: 4px; }

/* ---------- 3D 业务卡片 ---------- */
.biz-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; perspective: 1200px; }
.biz-card { position: relative; padding: 36px 28px; border-radius: 14px; background: var(--panel);
  border: 1px solid var(--line); backdrop-filter: blur(8px); transform-style: preserve-3d;
  transition: transform .18s ease-out, box-shadow .3s, border-color .3s; will-change: transform; }
.biz-card:hover { border-color: rgba(34,211,238,.55); box-shadow: 0 24px 60px rgba(0,0,0,.5), var(--glow); }
.biz-card .glare { position: absolute; inset: 0; border-radius: 14px; pointer-events: none; opacity: 0;
  background: radial-gradient(circle at var(--gx,50%) var(--gy,50%), rgba(255,255,255,.14), transparent 60%); transition: opacity .3s; }
.biz-card:hover .glare { opacity: 1; }
.biz-card .icon { width: 74px; height: 74px; margin-bottom: 20px; transform: translateZ(46px); }
.biz-card h3 { font-size: 20px; color: #fff; margin-bottom: 10px; transform: translateZ(34px); }
.biz-card p { font-size: 13.5px; color: var(--dim); margin-bottom: 16px; transform: translateZ(24px); }
.biz-card .more { font-size: 13px; color: var(--cyan); font-weight: 600; transform: translateZ(24px); }
.biz-card .corner { position: absolute; top: 0; right: 0; width: 0; height: 0;
  border-top: 36px solid transparent; border-right: 36px solid transparent;
  transition: border-color .3s; }
.biz-card:hover .corner { border-top-color: rgba(34,211,238,.22); }
.biz-grid .biz-card:nth-child(4), .biz-grid .biz-card:nth-child(5) { grid-column: span 1; }
/* 5 卡片布局：首行 3 张等宽，第二行 2 张加宽对齐满行 */
.biz-grid5 { display: grid; grid-template-columns: repeat(6, 1fr); gap: 26px; perspective: 1200px; }
.biz-grid5 .biz-card { grid-column: span 2; }
.biz-grid5 .biz-card:nth-child(4),
.biz-grid5 .biz-card:nth-child(5) { grid-column: span 3; }

/* ---------- 关于我们 ---------- */
.about-flex { display: flex; gap: 60px; align-items: center; }
.about-flex .txt { flex: 1.2; }
.about-flex .txt h3 { font-size: 26px; color: #fff; margin-bottom: 18px; }
.about-flex .txt p { color: var(--dim); margin-bottom: 14px; text-align: justify; }
.about-flex .pic { flex: 1; position: relative; }
.about-flex .pic svg { width: 100%; border-radius: 12px; background: linear-gradient(140deg, #0a1730, #0d2247);
  border: 1px solid var(--line); }
.about-flex .pic::after { content: ""; position: absolute; inset: -14px; z-index: -1; border-radius: 16px;
  background: linear-gradient(120deg, rgba(34,211,238,.16), rgba(59,130,246,.06)); filter: blur(18px); }

/* ---------- 优势 ---------- */
.why-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.why-item { padding: 30px 26px; border-radius: 12px; background: var(--panel); border: 1px solid var(--line);
  position: relative; overflow: hidden; transition: transform .3s, box-shadow .3s; }
.why-item::before { content: ""; position: absolute; left: 0; top: 0; width: 3px; height: 0;
  background: linear-gradient(180deg, var(--cyan), var(--blue)); transition: height .4s; }
.why-item:hover { transform: translateY(-6px); box-shadow: 0 18px 44px rgba(0,0,0,.45); }
.why-item:hover::before { height: 100%; }
.why-item .num { font-size: 40px; font-family: Georgia, serif; font-weight: 700; line-height: 1;
  background: linear-gradient(180deg, rgba(111,182,255,.9), rgba(34,211,238,.25));
  -webkit-background-clip: text; background-clip: text; color: transparent; }
.why-item h3 { font-size: 18px; color: #fff; margin: 10px 0 8px; }
.why-item p { font-size: 13.5px; color: var(--dim); }

/* ---------- 航线图 ---------- */
.route-wrap { position: relative; }
.route-wrap svg.map { width: 100%; border-radius: 14px; background: linear-gradient(150deg, #08152e, #0a1e42);
  border: 1px solid var(--line); }
.route { stroke-dasharray: 8 7; animation: dashmove 1.4s linear infinite; }
@keyframes dashmove { to { stroke-dashoffset: -15; } }
.node { animation: nodeGlow 2.4s ease-in-out infinite; transform-box: fill-box; transform-origin: center; }
@keyframes nodeGlow { 0%,100% { opacity: .85; } 50% { opacity: .35; } }
.mover { offset-rotate: 0deg; }
.rline { fill: none; stroke: url(#routeGrad); stroke-width: 2.2; }

/* ---------- 流程 ---------- */
.flow-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 20px; }
.flow .step { text-align: center; padding: 26px 12px; border-radius: 12px; background: var(--panel);
  border: 1px solid var(--line); position: relative; transition: all .3s; }
.flow .step:hover { border-color: rgba(34,211,238,.5); transform: translateY(-6px); }
.flow .cir { width: 66px; height: 66px; margin: 0 auto 14px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center; font-size: 24px; font-family: Georgia, serif;
  background: linear-gradient(140deg, rgba(34,211,238,.18), rgba(59,130,246,.08));
  border: 1px solid rgba(34,211,238,.45); color: var(--cyan); position: relative; }
.flow .cir::after { content: ""; position: absolute; inset: -7px; border-radius: 50%;
  border: 1px dashed rgba(34,211,238,.35); animation: spin 9s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.flow h4 { font-size: 16px; color: #fff; margin-bottom: 6px; }
.flow p { font-size: 12.5px; color: var(--dim); }

/* ---------- 新闻 ---------- */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.news-card { border-radius: 14px; overflow: hidden; background: var(--panel); border: 1px solid var(--line);
  transition: all .35s; }
.news-card:hover { transform: translateY(-8px); box-shadow: 0 22px 50px rgba(0,0,0,.5); border-color: rgba(34,211,238,.45); }
.news-card .cover { height: 168px; position: relative; overflow: hidden;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(130deg, #0b2b57, #0e3a78); }
.news-card .cover::before { content: ""; position: absolute; inset: 0;
  background: radial-gradient(circle at 30% 20%, rgba(34,211,238,.25), transparent 55%); }
.news-card .cover svg { width: 70px; height: 70px; opacity: .92; transition: transform .4s; }
.news-card:hover .cover svg { transform: scale(1.18) rotate(-4deg); }
.news-card .body { padding: 22px; }
.news-card .date { font-size: 12.5px; color: var(--cyan); letter-spacing: 1px; }
.news-card h3 { font-size: 17px; color: #fff; margin: 8px 0; }
.news-card p { font-size: 13.5px; color: var(--dim); }

/* ---------- 合作伙伴跑马灯 ---------- */
.marquee { overflow: hidden; position: relative; padding: 10px 0;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); }
.marquee .track { display: flex; gap: 18px; width: max-content; animation: scrollx 30s linear infinite; }
.marquee:hover .track { animation-play-state: paused; }
@keyframes scrollx { to { transform: translateX(-50%); } }
.partner-chip { flex: none; display: flex; align-items: center; justify-content: center;
  width: 170px; height: 74px; border-radius: 10px; background: rgba(15,32,63,.5);
  border: 1px solid var(--line); font-family: Georgia, serif; font-weight: 700; font-size: 17px;
  color: var(--dim); letter-spacing: 1px; transition: all .3s; }
.partner-chip:hover { color: var(--cyan); border-color: rgba(34,211,238,.5); text-shadow: 0 0 14px rgba(34,211,238,.6); }
.partner-chip.cn { font-family: "Microsoft YaHei", sans-serif; font-size: 15px; }

/* ---------- 联系（四卡片均匀布局） ---------- */
.contact-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 26px; }
.info-card { padding: 40px 22px; border-radius: 14px; background: var(--panel);
  border: 1px solid var(--line); text-align: center; backdrop-filter: blur(8px);
  transition: all .35s; }
.info-card:hover { border-color: rgba(34,211,238,.5); transform: translateY(-6px);
  box-shadow: 0 20px 48px rgba(0,0,0,.45), var(--glow); }
.info-card .ic { width: 64px; height: 64px; margin: 0 auto 18px; border-radius: 16px;
  background: linear-gradient(140deg, rgba(34,211,238,.2), rgba(59,130,246,.08));
  border: 1px solid rgba(34,211,238,.4); display: flex; align-items: center; justify-content: center; }
.info-card .ic svg { width: 28px; height: 28px; }
.info-card h4 { font-size: 17px; color: #fff; margin-bottom: 8px; }
.info-card p { font-size: 14px; color: var(--dim); }
.info-card .nowrap { white-space: nowrap; }

/* ---------- 页脚 ---------- */
.footer { border-top: 1px solid var(--line); background: linear-gradient(180deg, rgba(10,23,48,.5), #04091a);
  padding: 44px 0 0; font-size: 14px; color: var(--dim); }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.3fr; gap: 40px; padding-bottom: 42px; }
.footer h4 { color: #fff; font-size: 16px; margin-bottom: 16px; }
.footer-links a { display: block; margin-bottom: 9px; transition: all .25s; }
.footer-links a:hover { color: var(--cyan); transform: translateX(4px); }
.footer-bottom { border-top: 1px solid rgba(94,152,255,.1); padding: 18px 0; text-align: center; font-size: 13px; color: #5f7699; }

/* ---------- 业务详情弹窗 ---------- */
.modal { position: fixed; inset: 0; z-index: 1500; display: none; }
.modal.open { display: block; }
.modal .mask { position: absolute; inset: 0; background: rgba(3, 7, 18, .8);
  backdrop-filter: blur(10px); opacity: 0; transition: opacity .35s; }
.modal.show .mask { opacity: 1; }
.modal .panel { position: relative; z-index: 2; width: min(780px, 92vw); max-height: 84vh;
  overflow-y: auto; margin: 7vh auto 0; padding: 42px 46px; border-radius: 16px;
  background: linear-gradient(160deg, #0c1c3c, #0a1730);
  border: 1px solid rgba(34, 211, 238, .32);
  box-shadow: 0 30px 90px rgba(0, 0, 0, .6), var(--glow);
  transform: translateY(46px) scale(.96); opacity: 0;
  transition: all .42s cubic-bezier(.16, .84, .32, 1); }
.modal.show .panel { transform: none; opacity: 1; }
.modal h3 { font-size: 25px; color: #fff; }
.modal .m-en { color: var(--cyan); font-size: 12.5px; letter-spacing: 3px; margin: 4px 0 16px; }
.modal h4 { color: var(--cyan); font-size: 16px; margin: 22px 0 10px; }
.modal ol, .modal ul { padding-left: 22px; }
.modal li { font-size: 14px; color: var(--dim); margin-bottom: 8px; }
.modal .close { position: absolute; top: 16px; right: 18px; width: 38px; height: 38px;
  border-radius: 50%; border: 1px solid var(--line); background: transparent;
  color: var(--dim); font-size: 20px; line-height: 1; cursor: pointer; transition: all .25s; }
.modal .close:hover { color: #fff; border-color: var(--cyan); transform: rotate(90deg); }
.biz-card[data-svc] { cursor: pointer; }
@media (max-width: 640px) { .modal .panel { padding: 30px 22px; } }

/* ---------- 返回顶部 ---------- */
#toTop { position: fixed; right: 26px; bottom: 26px; z-index: 800; width: 46px; height: 46px;
  border-radius: 10px; border: 1px solid rgba(34,211,238,.4); background: rgba(10,23,48,.75);
  color: var(--cyan); cursor: pointer; font-size: 18px; opacity: 0; visibility: hidden;
  transition: all .35s; backdrop-filter: blur(8px); }
#toTop.show { opacity: 1; visibility: visible; }
#toTop:hover { box-shadow: var(--glow); transform: translateY(-3px); }

/* ---------- 响应式 ---------- */
@media (max-width: 1000px) {
  .section { padding: 42px 0; }
  .sec-head { margin-bottom: 24px; }
  .biz-grid, .why-grid, .news-grid, .footer-grid, .stats .container { grid-template-columns: repeat(2, 1fr); }
  .flow-grid { grid-template-columns: repeat(3, 1fr); }
  .biz-grid5 { display: grid; }
  .biz-grid5 .biz-card, .biz-grid5 .biz-card:nth-child(4), .biz-grid5 .biz-card:nth-child(5) { grid-column: span 3; }
  .about-flex { flex-direction: column; display: flex; }
  .contact-grid { grid-template-columns: repeat(2, 1fr); }
  .hero h1 { font-size: 34px; }
  .hero .ship { display: none; }
  .navbar .container { flex-wrap: wrap; height: auto; padding: 10px 0; gap: 8px; }
  .nav { flex-wrap: wrap; justify-content: center; }
  .cta { justify-content: center; flex-wrap: wrap; }
}