/* ==========================================================================
   兰陵红蓝互联网科技工作室 · 官网样式
   深色科技蓝 + 红点缀
   ========================================================================== */

:root {
  --bg: #070B14;
  --bg-soft: #0A0F1C;
  --panel: #0E1626;
  --panel-2: #121C30;
  --line: rgba(148, 178, 255, .12);
  --line-2: rgba(148, 178, 255, .22);
  --txt: #E9F0FC;
  --txt-2: #A6B8D2;
  --txt-3: #6F84A3;
  --blue: #3B76FF;
  --blue-l: #7AA5FF;
  --red: #FF3D5E;
  --cyan: #39D8F6;
  --radius: 18px;
  --radius-sm: 12px;
  --maxw: 1180px;
  --shadow-lg: 0 30px 70px -30px rgba(0, 0, 0, .85);
  --shadow-md: 0 18px 44px -22px rgba(0, 0, 0, .8);
  --font: "PingFang SC", "HarmonyOS Sans SC", "Hiragino Sans GB", "Microsoft YaHei",
          system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--txt);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(900px 520px at 78% -8%, rgba(59, 118, 255, .16), transparent 62%),
    radial-gradient(700px 460px at 4% 6%, rgba(255, 61, 94, .09), transparent 60%),
    radial-gradient(1000px 700px at 50% 108%, rgba(57, 216, 246, .06), transparent 65%);
}

img { max-width: 100%; height: auto; display: block; border: 0; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; }
ul, ol { margin: 0; padding: 0; list-style: none; }
p { margin: 0; }
h1, h2, h3, h4 { margin: 0; font-weight: 700; letter-spacing: -.015em; line-height: 1.24; }
::selection { background: rgba(59, 118, 255, .38); color: #fff; }

/* 滚动条 */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: #070B14; }
::-webkit-scrollbar-thumb { background: #1D2A42; border-radius: 8px; }
::-webkit-scrollbar-thumb:hover { background: #2A3B5A; }

/* ---------- 布局 ---------- */
.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 26px; position: relative; z-index: 1; }
.section { padding: 88px 0; position: relative; }
.section--tight { padding: 62px 0; }
.section--panel { background: linear-gradient(180deg, rgba(14, 22, 38, .72), rgba(10, 15, 28, 0)); border-top: 1px solid var(--line); }
.divider { height: 1px; background: linear-gradient(90deg, transparent, var(--line-2), transparent); }

/* ---------- 头部 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  transition: background .3s, border-color .3s, backdrop-filter .3s;
  border-bottom: 1px solid transparent;
}
.site-header.is-stuck {
  background: rgba(7, 11, 20, .82);
  backdrop-filter: blur(16px) saturate(150%);
  -webkit-backdrop-filter: blur(16px) saturate(150%);
  border-bottom-color: var(--line);
}
.header-inner { display: flex; align-items: center; gap: 22px; height: 74px; }

.brand { display: inline-flex; align-items: center; gap: 11px; flex-shrink: 0; }
.brand-mark { width: 36px; height: 36px; flex-shrink: 0; }
.brand-mark--sm { width: 28px; height: 28px; }
.brand-mark--lg { width: 52px; height: 52px; }
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-text b { font-size: 15.5px; letter-spacing: .02em; font-weight: 700; }
.brand-text span { font-size: 10.5px; color: var(--txt-3); letter-spacing: .18em; text-transform: uppercase; }

.nav { display: flex; align-items: center; gap: 4px; margin-left: auto; }
.nav a {
  position: relative;
  padding: 9px 14px;
  font-size: 14.5px;
  color: var(--txt-2);
  border-radius: 9px;
  transition: color .2s, background .2s;
}
.nav a:hover { color: var(--txt); background: rgba(148, 178, 255, .07); }
.nav a.is-active { color: #fff; }
.nav a.is-active::after {
  content: "";
  position: absolute;
  left: 14px; right: 14px; bottom: 3px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--blue), var(--red));
}

.header-actions { display: flex; align-items: center; gap: 12px; }
.header-tel { font-size: 14px; color: var(--txt-2); display: inline-flex; align-items: center; gap: 7px; }
.header-tel svg { width: 15px; height: 15px; color: var(--blue-l); }
.header-tel:hover { color: var(--txt); }

.nav-toggle {
  display: none;
  width: 42px; height: 42px;
  border-radius: 11px;
  border: 1px solid var(--line-2);
  background: rgba(148, 178, 255, .06);
  color: var(--txt);
  cursor: pointer;
  align-items: center;
  justify-content: center;
}
.nav-toggle svg { width: 20px; height: 20px; }

/* 移动菜单 */
.mobile-panel {
  position: fixed;
  inset: 0 0 0 auto;
  width: min(84vw, 340px);
  background: #0A1120;
  border-left: 1px solid var(--line);
  z-index: 120;
  transform: translateX(100%);
  transition: transform .34s cubic-bezier(.4, 0, .2, 1);
  padding: 20px 22px 34px;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}
.mobile-panel.is-open { transform: none; }
.mobile-panel .mp-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 20px; }
.mobile-panel .mp-close { width: 38px; height: 38px; border-radius: 10px; border: 1px solid var(--line-2); background: none; color: var(--txt-2); display: grid; place-items: center; cursor: pointer; }
.mobile-panel .mp-close svg { width: 18px; height: 18px; }
.mobile-panel a.mp-link {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 4px;
  font-size: 16px;
  color: var(--txt-2);
  border-bottom: 1px solid var(--line);
}
.mobile-panel a.mp-link.is-active { color: #fff; }
.mobile-panel .mp-foot { margin-top: auto; padding-top: 24px; display: grid; gap: 10px; }
.mp-scrim { position: fixed; inset: 0; background: rgba(3, 6, 12, .62); backdrop-filter: blur(3px); z-index: 110; opacity: 0; visibility: hidden; transition: .3s; }
.mp-scrim.is-open { opacity: 1; visibility: visible; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 46px;
  padding: 0 22px;
  border-radius: 11px;
  font-size: 14.5px;
  font-weight: 600;
  letter-spacing: .01em;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .18s, box-shadow .25s, background .25s, border-color .25s, color .2s;
  white-space: nowrap;
}
.btn svg { width: 16px; height: 16px; }
.btn:active { transform: translateY(1px); }

.btn-primary {
  background: linear-gradient(135deg, #3B76FF, #2A5BE0 60%, #7A3BFF);
  color: #fff;
  box-shadow: 0 12px 30px -12px rgba(59, 118, 255, .9), inset 0 1px 0 rgba(255, 255, 255, .18);
}
.btn-primary:hover { box-shadow: 0 18px 40px -14px rgba(59, 118, 255, 1), inset 0 1px 0 rgba(255, 255, 255, .22); }

.btn-accent {
  background: linear-gradient(135deg, #FF3D5E, #E01B45);
  color: #fff;
  box-shadow: 0 12px 30px -12px rgba(255, 61, 94, .85), inset 0 1px 0 rgba(255, 255, 255, .18);
}

.btn-ghost {
  background: rgba(148, 178, 255, .07);
  border-color: var(--line-2);
  color: var(--txt);
}
.btn-ghost:hover { background: rgba(148, 178, 255, .13); border-color: rgba(148, 178, 255, .34); }

.btn-line { background: transparent; border-color: var(--line-2); color: var(--txt-2); }
.btn-line:hover { color: #fff; border-color: var(--blue); }

.btn-sm { height: 38px; padding: 0 16px; font-size: 13.5px; border-radius: 9px; }
.btn-block { width: 100%; }

/* ---------- 文字通用 ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 30px;
  padding: 0 13px 0 11px;
  border-radius: 999px;
  border: 1px solid var(--line-2);
  background: rgba(59, 118, 255, .08);
  color: var(--blue-l);
  font-size: 12.5px;
  letter-spacing: .04em;
  margin-bottom: 20px;
}
.eyebrow::before {
  content: "";
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--red);
  box-shadow: 0 0 0 3px rgba(255, 61, 94, .18);
}

.sec-head { max-width: 720px; margin-bottom: 46px; }
.sec-head--center { margin-left: auto; margin-right: auto; text-align: center; }
.sec-title { font-size: clamp(26px, 3vw, 38px); }
.sec-title em { font-style: normal; background: linear-gradient(100deg, var(--blue-l), var(--red)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.sec-sub { margin-top: 14px; color: var(--txt-2); font-size: 15.5px; line-height: 1.85; }
.grad-text { background: linear-gradient(100deg, var(--blue-l) 8%, #C9A7FF 48%, var(--red) 96%); -webkit-background-clip: text; background-clip: text; color: transparent; }

/* ---------- Hero ---------- */
.hero { position: relative; padding: 62px 0 74px; overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: 1.02fr .98fr; gap: 54px; align-items: center; }
.hero h1 { font-size: clamp(34px, 4.5vw, 56px); letter-spacing: -.028em; line-height: 1.14; }
.hero h1 em { font-style: normal; background: linear-gradient(100deg, #7AA5FF, #FF6B85); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero-sub { margin-top: 22px; font-size: 16.2px; color: var(--txt-2); line-height: 1.9; max-width: 566px; }
.hero-tags { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 26px; }
.hero-tag {
  font-size: 12.8px;
  color: var(--txt-2);
  padding: 6px 13px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(148, 178, 255, .045);
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 13px; margin-top: 34px; }
.hero-note { margin-top: 20px; font-size: 13px; color: var(--txt-3); display: flex; align-items: center; gap: 8px; }
.hero-note svg { width: 15px; height: 15px; color: #2FBF8F; }

/* Hero 视觉 */
.hero-visual { position: relative; min-height: 430px; }
.hv-glow {
  position: absolute; inset: 6% 4% 8% 8%;
  background: radial-gradient(circle at 40% 40%, rgba(59, 118, 255, .3), transparent 62%);
  filter: blur(44px);
  z-index: 0;
}
.hv-window {
  position: relative;
  z-index: 2;
  border-radius: 18px;
  border: 1px solid var(--line-2);
  background: linear-gradient(180deg, #101B2E, #0A1120);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  transform: perspective(1400px) rotateY(-7deg) rotateX(3deg);
  transition: transform .6s;
}
.hero-visual:hover .hv-window { transform: perspective(1400px) rotateY(-2deg) rotateX(1deg); }
.hv-bar { display: flex; align-items: center; gap: 6px; padding: 11px 14px; border-bottom: 1px solid var(--line); background: rgba(148, 178, 255, .04); }
.hv-dot { width: 9px; height: 9px; border-radius: 50%; background: #22314C; }
.hv-dot:nth-child(1) { background: #FF5F57; }
.hv-dot:nth-child(2) { background: #FEBC2E; }
.hv-dot:nth-child(3) { background: #28C840; }
.hv-url {
  margin-left: 8px;
  flex: 1;
  height: 22px;
  border-radius: 6px;
  background: rgba(7, 11, 20, .8);
  border: 1px solid var(--line);
  font-size: 10.5px;
  color: var(--txt-3);
  display: flex;
  align-items: center;
  padding: 0 9px;
  letter-spacing: .02em;
}
.hv-body { padding: 20px 20px 24px; }
.hv-line { height: 9px; border-radius: 5px; background: rgba(148, 178, 255, .12); margin-bottom: 10px; }
.hv-line.w70 { width: 70%; }
.hv-line.w45 { width: 45%; }
.hv-line.w55 { width: 55%; }
.hv-hero-block {
  border-radius: 12px;
  border: 1px solid var(--line);
  background: linear-gradient(135deg, rgba(59, 118, 255, .18), rgba(255, 61, 94, .1));
  padding: 16px;
  margin-bottom: 16px;
}
.hv-hero-block .t { font-size: 15px; font-weight: 700; margin-bottom: 8px; }
.hv-hero-block .s { font-size: 11px; color: var(--txt-3); }
.hv-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.hv-card { border-radius: 10px; border: 1px solid var(--line); background: rgba(148, 178, 255, .05); padding: 12px 10px; text-align: center; }
.hv-card i { display: block; width: 22px; height: 22px; margin: 0 auto 7px; border-radius: 6px; background: linear-gradient(135deg, var(--blue), #7A3BFF); opacity: .9; }
.hv-card span { font-size: 10px; color: var(--txt-3); }
.hv-chart { display: flex; align-items: flex-end; gap: 6px; height: 74px; margin-top: 16px; }
.hv-chart b { flex: 1; border-radius: 4px 4px 2px 2px; background: linear-gradient(180deg, var(--blue), rgba(59, 118, 255, .12)); display: block; }

.hv-float {
  position: absolute;
  z-index: 3;
  border-radius: 13px;
  border: 1px solid var(--line-2);
  background: rgba(13, 21, 36, .92);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-md);
  padding: 12px 15px;
  display: flex;
  align-items: center;
  gap: 10px;
  animation: floaty 6s ease-in-out infinite;
}
.hv-float svg { width: 18px; height: 18px; }
.hv-float .lbl { display: block; font-size: 11px; color: var(--txt-3); line-height: 1.35; }
.hv-float .val { display: block; font-size: 14px; font-weight: 700; color: var(--txt); line-height: 1.3; }
.hv-float--a { top: 6px; right: -6px; }
.hv-float--a svg { color: #2FBF8F; }
.hv-float--b { bottom: -26px; left: -22px; animation-delay: -3s; }
.hv-float--b svg { color: var(--red); }
@keyframes floaty { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-9px); } }

/* ---------- 数据条 ---------- */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.stat { background: rgba(11, 17, 30, .92); padding: 26px 20px; text-align: center; }
.stat b { display: flex; align-items: baseline; justify-content: center; gap: 2px; font-size: clamp(26px, 3vw, 34px); font-weight: 800; letter-spacing: -.02em; font-variant-numeric: tabular-nums; line-height: 1.15; }
.stat b .num { background: linear-gradient(180deg, #fff, #9DB8E6); -webkit-background-clip: text; background-clip: text; color: transparent; }
.stat b .plus { font-style: normal; font-size: .5em; font-weight: 800; color: var(--blue-l); }
.stat span { display: block; margin-top: 6px; font-size: 12.8px; color: var(--txt-3); letter-spacing: .02em; }

/* ---------- 服务卡 ---------- */
.svc-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.svc-grid > .svc-card:nth-child(1), .svc-grid > .svc-card:nth-child(2) { grid-column: span 1; }
.svc-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 28px 26px 24px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: linear-gradient(160deg, rgba(18, 28, 48, .9), rgba(11, 17, 30, .72));
  overflow: hidden;
  transition: transform .3s, border-color .3s, box-shadow .3s;
}
.svc-card::before {
  content: "";
  position: absolute;
  inset: -1px -1px auto -1px;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(59, 118, 255, .8), transparent);
  opacity: 0;
  transition: opacity .35s;
}
.svc-card:hover { transform: translateY(-5px); border-color: rgba(148, 178, 255, .3); box-shadow: 0 26px 54px -30px rgba(0, 0, 0, .9); }
.svc-card:hover::before { opacity: 1; }
.svc-icon {
  width: 48px; height: 48px;
  border-radius: 13px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(59, 118, 255, .3);
  background: linear-gradient(150deg, rgba(59, 118, 255, .22), rgba(59, 118, 255, .04));
  color: var(--blue-l);
  margin-bottom: 18px;
}
.svc-icon svg { width: 23px; height: 23px; }
.svc-card--red .svc-icon { border-color: rgba(255, 61, 94, .3); background: linear-gradient(150deg, rgba(255, 61, 94, .2), rgba(255, 61, 94, .04)); color: #FF8095; }
.svc-card h3 { font-size: 19px; margin-bottom: 4px; }
.svc-en { font-size: 10.5px; letter-spacing: .16em; text-transform: uppercase; color: var(--txt-3); margin-bottom: 13px; }
.svc-desc { font-size: 13.8px; color: var(--txt-2); line-height: 1.78; flex: 1; }
.svc-meta { margin-top: 18px; padding-top: 15px; border-top: 1px dashed var(--line); display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.svc-price { font-size: 12.8px; color: var(--txt-3); }
.svc-price b { color: var(--blue-l); font-size: 14.5px; font-weight: 700; }
.svc-arrow { width: 30px; height: 30px; border-radius: 50%; border: 1px solid var(--line-2); display: grid; place-items: center; color: var(--txt-2); transition: .25s; flex-shrink: 0; }
.svc-arrow svg { width: 14px; height: 14px; }
.svc-card:hover .svc-arrow { background: var(--blue); border-color: var(--blue); color: #fff; transform: rotate(-45deg); }

.svc-list-chips { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 14px; }
.svc-list-chips span { font-size: 11.5px; color: var(--txt-3); padding: 3px 9px; border-radius: 6px; background: rgba(148, 178, 255, .06); }

/* ---------- 流程 ---------- */
.flow { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; counter-reset: f; }
.flow-item { position: relative; padding: 24px 18px 20px; border-radius: var(--radius-sm); border: 1px solid var(--line); background: rgba(14, 22, 38, .6); }
.flow-item::before {
  counter-increment: f;
  content: "0" counter(f);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--blue-l);
  display: block;
  margin-bottom: 10px;
}
.flow-item::after {
  content: "";
  position: absolute;
  top: 32px; right: -9px;
  width: 18px; height: 1px;
  background: var(--line-2);
}
.flow-item:last-child::after { display: none; }
.flow-item h4 { font-size: 15px; margin-bottom: 7px; }
.flow-item p { font-size: 12.8px; color: var(--txt-3); line-height: 1.7; }

/* ---------- 优势 ---------- */
.why-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.why-item { display: flex; gap: 16px; padding: 24px; border-radius: var(--radius-sm); border: 1px solid var(--line); background: rgba(14, 22, 38, .55); transition: border-color .3s, background .3s; }
.why-item:hover { border-color: rgba(148, 178, 255, .28); background: rgba(18, 28, 48, .7); }
.why-ico { width: 40px; height: 40px; flex-shrink: 0; border-radius: 11px; display: grid; place-items: center; background: rgba(59, 118, 255, .13); color: var(--blue-l); border: 1px solid rgba(59, 118, 255, .22); }
.why-ico svg { width: 20px; height: 20px; }
.why-item h4 { font-size: 15.5px; margin-bottom: 6px; }
.why-item p { font-size: 13.4px; color: var(--txt-2); line-height: 1.75; }

.feat-grid--4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 1080px) { .feat-grid--4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .feat-grid--4 { grid-template-columns: 1fr; } }

/* ---------- 案例卡 ---------- */
.proj-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.proj-card {
  display: flex;
  flex-direction: column;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: rgba(11, 17, 30, .78);
  overflow: hidden;
  transition: transform .3s, border-color .3s, box-shadow .3s;
}
.proj-card:hover { transform: translateY(-5px); border-color: rgba(148, 178, 255, .32); box-shadow: 0 28px 56px -30px rgba(0, 0, 0, .92); }
.proj-thumb { position: relative; aspect-ratio: 16 / 10; overflow: hidden; background: #0C1524; }
.proj-thumb img { width: 100%; height: 100%; object-fit: cover; object-position: center; transition: transform .55s; }
.proj-card:hover .proj-thumb img { transform: scale(1.045); }
.proj-thumb--ph { display: grid; place-items: center; }
.proj-thumb--ph .ph-inner { display: grid; place-items: center; gap: 10px; text-align: center; padding: 16px; }
.proj-thumb--ph svg { width: 34px; height: 34px; opacity: .85; }
.proj-thumb--ph .ph-txt { font-size: 11px; letter-spacing: .18em; text-transform: uppercase; opacity: .6; }

/* 分类渐变 */
.g-website   { background: radial-gradient(120% 120% at 20% 0%, #1B3B7A 0%, #0B1A33 55%, #080E1A 100%); color: #8FB4FF; }
.g-miniprogram { background: radial-gradient(120% 120% at 80% 0%, #0F4D46 0%, #0A2430 55%, #080E1A 100%); color: #5FE3C0; }
.g-minigame  { background: radial-gradient(120% 120% at 30% 10%, #4A1F4D 0%, #231233 55%, #080E1A 100%); color: #E29BFF; }
.g-global    { background: radial-gradient(120% 120% at 70% 10%, #4C2A18 0%, #2A1720 55%, #080E1A 100%); color: #FFB77A; }
.g-seo       { background: radial-gradient(120% 120% at 25% 5%, #3A1A2C 0%, #1F1226 55%, #080E1A 100%); color: #FF8FA8; }
.g-other     { background: radial-gradient(120% 120% at 50% 0%, #22304C 0%, #121A2A 55%, #080E1A 100%); color: #A9BBD4; }

.proj-badge {
  position: absolute;
  top: 12px; left: 12px;
  font-size: 11px;
  padding: 4px 10px;
  border-radius: 7px;
  background: rgba(7, 11, 20, .78);
  border: 1px solid var(--line-2);
  backdrop-filter: blur(6px);
  color: var(--txt-2);
  letter-spacing: .02em;
}
.proj-type {
  position: absolute;
  bottom: 12px; right: 12px;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 10.5px;
  padding: 4px 9px;
  border-radius: 6px;
  background: rgba(7, 11, 20, .8);
  border: 1px solid var(--line-2);
  color: var(--txt-2);
}
.proj-type svg { width: 12px; height: 12px; }

.proj-body { padding: 20px 20px 22px; display: flex; flex-direction: column; flex: 1; }
.proj-body h3 { font-size: 16.5px; line-height: 1.45; }
.proj-meta { margin-top: 6px; font-size: 11.5px; color: var(--txt-3); display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.proj-meta i { width: 3px; height: 3px; border-radius: 50%; background: var(--txt-3); opacity: .6; font-style: normal; }
.proj-body p { margin-top: 11px; font-size: 13.2px; color: var(--txt-2); line-height: 1.72; flex: 1; }
.proj-foot { margin-top: 16px; padding-top: 14px; border-top: 1px solid var(--line); display: flex; align-items: center; justify-content: space-between; font-size: 12.5px; color: var(--blue-l); }
.proj-foot .go { display: inline-flex; align-items: center; gap: 5px; }
.proj-foot .go svg { width: 13px; height: 13px; transition: transform .25s; }
.proj-card:hover .proj-foot .go svg { transform: translateX(3px); }
.proj-host { color: var(--txt-3); font-size: 11.5px; max-width: 55%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ---------- 筛选 ---------- */
.filter-bar { display: flex; flex-wrap: wrap; gap: 9px; margin-bottom: 32px; }
.filter-chip {
  height: 38px;
  padding: 0 17px;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: rgba(148, 178, 255, .045);
  color: var(--txt-2);
  font-size: 13.5px;
  transition: .22s;
}
.filter-chip:hover { border-color: var(--line-2); color: var(--txt); }
.filter-chip.is-on { background: linear-gradient(135deg, rgba(59, 118, 255, .9), rgba(122, 59, 255, .85)); border-color: transparent; color: #fff; box-shadow: 0 10px 26px -14px rgba(59, 118, 255, .95); }
.filter-chip .n { font-size: 11px; opacity: .72; }

/* ---------- 分页 ---------- */
.pager { display: flex; align-items: center; justify-content: center; gap: 8px; margin-top: 46px; flex-wrap: wrap; }
.pager a, .pager span {
  min-width: 38px; height: 38px;
  padding: 0 12px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 9px;
  border: 1px solid var(--line);
  font-size: 13.5px;
  color: var(--txt-2);
  transition: .2s;
}
.pager a:hover { border-color: var(--line-2); color: #fff; }
.pager .is-on { background: var(--blue); border-color: var(--blue); color: #fff; }
.pager .is-off { opacity: .4; }

/* ---------- 空状态 ---------- */
.empty { text-align: center; padding: 70px 20px; border: 1px dashed var(--line-2); border-radius: var(--radius); }
.empty svg { width: 40px; height: 40px; color: var(--txt-3); margin: 0 auto 14px; }
.empty p { color: var(--txt-3); font-size: 14px; }

/* ---------- CTA 区 ---------- */
.cta-band {
  position: relative;
  border-radius: 22px;
  border: 1px solid rgba(148, 178, 255, .22);
  background:
    radial-gradient(80% 140% at 10% 0%, rgba(59, 118, 255, .28), transparent 58%),
    radial-gradient(70% 130% at 92% 100%, rgba(255, 61, 94, .2), transparent 60%),
    linear-gradient(160deg, #101B30, #0A1120);
  padding: 52px 48px;
  overflow: hidden;
  display: grid;
  grid-template-columns: 1.25fr auto;
  gap: 32px;
  align-items: center;
}
.cta-band::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(70% 100% at 30% 0%, #000, transparent 72%);
  -webkit-mask-image: radial-gradient(70% 100% at 30% 0%, #000, transparent 72%);
  opacity: .5;
  pointer-events: none;
}
.cta-band h2 { font-size: clamp(24px, 2.6vw, 33px); position: relative; }
.cta-band p { margin-top: 12px; color: var(--txt-2); font-size: 14.6px; max-width: 560px; position: relative; }
.cta-actions { display: flex; gap: 12px; flex-wrap: wrap; position: relative; }

/* ---------- 页脚 ---------- */
.site-footer { border-top: 1px solid var(--line); background: linear-gradient(180deg, rgba(8, 12, 22, .4), #050810); padding: 62px 0 0; margin-top: 90px; position: relative; }
.footer-top { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.2fr; gap: 40px; padding-bottom: 46px; }
.footer-brand p { margin-top: 16px; font-size: 13.2px; color: var(--txt-3); line-height: 1.85; max-width: 300px; }
.footer-col h5 { font-size: 13px; color: var(--txt); margin-bottom: 16px; letter-spacing: .06em; font-weight: 600; }
.footer-col a, .footer-col li { display: block; font-size: 13.2px; color: var(--txt-3); padding: 5px 0; transition: color .2s; }
.footer-col a:hover { color: var(--txt); }
.footer-contact li { display: flex; align-items: flex-start; gap: 9px; font-size: 13.2px; color: var(--txt-3); }
.footer-contact svg { width: 15px; height: 15px; margin-top: 3px; flex-shrink: 0; color: var(--blue-l); }
.footer-bottom {
  border-top: 1px solid var(--line);
  padding: 20px 0 26px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 20px;
  font-size: 12.2px;
  color: var(--txt-3);
}
.footer-bottom a { color: var(--txt-3); }
.footer-bottom a:hover { color: var(--txt-2); }
.footer-bottom .sep { opacity: .35; }
.footer-beian { display: flex; flex-wrap: wrap; align-items: center; gap: 14px; }
.footer-beian a { display: inline-flex; align-items: center; gap: 5px; }
.footer-beian svg { width: 13px; height: 13px; }

/* ---------- 页面头 ---------- */
.page-hero { padding: 66px 0 46px; border-bottom: 1px solid var(--line); position: relative; }
.page-hero::after {
  content: "";
  position: absolute; left: 0; right: 0; bottom: -1px; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(59, 118, 255, .55), transparent);
}
.page-hero h1 { font-size: clamp(28px, 3.6vw, 42px); letter-spacing: -.022em; }
.page-hero .lede { margin-top: 16px; max-width: 680px; color: var(--txt-2); font-size: 15.5px; line-height: 1.85; }
.crumb { display: flex; align-items: center; gap: 8px; font-size: 12.5px; color: var(--txt-3); margin-bottom: 18px; }
.crumb a:hover { color: var(--txt-2); }
.crumb svg { width: 12px; height: 12px; opacity: .6; }

/* ---------- 服务详情 ---------- */
.svc-detail-hero { display: grid; grid-template-columns: 1.35fr .65fr; gap: 44px; align-items: start; }
.svc-fact { border-radius: var(--radius); border: 1px solid var(--line); background: linear-gradient(160deg, rgba(18, 28, 48, .9), rgba(11, 17, 30, .7)); padding: 26px; position: sticky; top: 96px; }
.svc-fact dl { margin: 0; display: grid; gap: 16px; }
.svc-fact dt { font-size: 11.5px; color: var(--txt-3); letter-spacing: .06em; margin-bottom: 3px; }
.svc-fact dd { margin: 0; font-size: 16px; font-weight: 700; }
.svc-fact dd.blue { color: var(--blue-l); }
.svc-fact hr { border: 0; border-top: 1px dashed var(--line); margin: 20px 0; }

.feat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.feat-item { padding: 22px 20px; border-radius: var(--radius-sm); border: 1px solid var(--line); background: rgba(14, 22, 38, .55); }
.feat-item .fi-ico { width: 34px; height: 34px; border-radius: 9px; display: grid; place-items: center; background: rgba(59, 118, 255, .14); color: var(--blue-l); margin-bottom: 13px; }
.feat-item .fi-ico svg { width: 18px; height: 18px; }
.feat-item h4 { font-size: 14.8px; margin-bottom: 6px; }
.feat-item p { font-size: 13px; color: var(--txt-3); line-height: 1.72; }

.check-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 11px 22px; }
.check-list li { display: flex; align-items: flex-start; gap: 10px; font-size: 14px; color: var(--txt-2); line-height: 1.7; }
.check-list li svg { width: 17px; height: 17px; flex-shrink: 0; margin-top: 3px; color: #2FBF8F; }

.accordion { border-top: 1px solid var(--line); }
.acc-item { border-bottom: 1px solid var(--line); }
.acc-q { width: 100%; text-align: left; background: none; border: 0; color: var(--txt); font-size: 15.2px; font-weight: 600; padding: 20px 40px 20px 0; cursor: pointer; position: relative; line-height: 1.6; }
.acc-q::after { content: "+"; position: absolute; right: 6px; top: 50%; transform: translateY(-50%); font-size: 20px; font-weight: 400; color: var(--txt-3); transition: .25s; }
.acc-item.is-open .acc-q::after { content: "−"; color: var(--blue-l); }
.acc-a { max-height: 0; overflow: hidden; transition: max-height .35s ease; }
.acc-a div { padding: 0 0 22px; font-size: 14px; color: var(--txt-2); line-height: 1.85; }
.acc-item.is-open .acc-a { max-height: 400px; }

/* ---------- 案例详情 ---------- */
.pd-head { display: grid; grid-template-columns: 1.5fr .5fr; gap: 40px; align-items: end; }
.pd-meta { display: flex; flex-wrap: wrap; gap: 28px; margin-top: 26px; }
.pd-meta div span { display: block; font-size: 11.5px; color: var(--txt-3); letter-spacing: .05em; margin-bottom: 2px; }
.pd-meta div b { font-size: 14px; font-weight: 600; color: var(--txt-2); }
.pd-body { display: grid; grid-template-columns: 1.55fr .45fr; gap: 48px; align-items: start; }
.pd-article { font-size: 15.4px; color: var(--txt-2); line-height: 1.95; }
.pd-article h3 { font-size: 17px; color: var(--txt); margin: 34px 0 12px; }
.pd-article h3:first-child { margin-top: 0; }
.pd-article p { margin-bottom: 14px; }
.pd-article strong { color: var(--txt); font-weight: 600; }
.pd-side { border-radius: var(--radius); border: 1px solid var(--line); background: rgba(14, 22, 38, .6); padding: 24px; }
.pd-side h4 { font-size: 13px; color: var(--txt-3); letter-spacing: .08em; margin-bottom: 14px; font-weight: 600; }

.qr-card { text-align: center; border-radius: var(--radius); border: 1px solid var(--line); background: #fff; padding: 18px; }
.qr-card img { width: 100%; max-width: 240px; margin: 0 auto; border-radius: 6px; }
.qr-cap { margin-top: 12px; font-size: 12.5px; color: #4A5568; display: flex; align-items: center; justify-content: center; gap: 6px; }
.qr-cap svg { width: 14px; height: 14px; color: #12B76A; }

.link-box { border-radius: var(--radius); border: 1px solid rgba(59, 118, 255, .3); background: linear-gradient(150deg, rgba(59, 118, 255, .14), rgba(59, 118, 255, .03)); padding: 24px; }
.link-box .lb-label { font-size: 11.5px; color: var(--txt-3); letter-spacing: .06em; }
.link-box .lb-url { display: block; margin: 10px 0 16px; font-size: 15px; color: var(--txt); word-break: break-all; font-weight: 600; }

.tag-row { display: flex; flex-wrap: wrap; gap: 7px; }
.tag { font-size: 11.8px; padding: 4px 10px; border-radius: 6px; background: rgba(148, 178, 255, .08); border: 1px solid var(--line); color: var(--txt-2); }

/* ---------- 关于页 ---------- */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 54px; align-items: start; }
.about-text p { font-size: 15.2px; color: var(--txt-2); line-height: 1.95; margin-bottom: 16px; }
.about-text h3 { font-size: 19px; margin: 30px 0 12px; }
.value-grid { display: grid; gap: 14px; }
.value-card { display: flex; gap: 15px; padding: 20px; border-radius: var(--radius-sm); border: 1px solid var(--line); background: rgba(14, 22, 38, .55); }
.value-card .vnum { font-size: 12px; font-weight: 700; color: var(--red); letter-spacing: .06em; flex-shrink: 0; width: 26px; padding-top: 2px; }
.value-card h4 { font-size: 15px; margin-bottom: 5px; }
.value-card p { font-size: 13.2px; color: var(--txt-3); line-height: 1.72; }

/* ---------- 表单 ---------- */
.form-card { border-radius: var(--radius); border: 1px solid var(--line); background: linear-gradient(160deg, rgba(18, 28, 48, .85), rgba(11, 17, 30, .7)); padding: 34px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field { margin-bottom: 16px; }
.field label { display: block; font-size: 12.8px; color: var(--txt-2); margin-bottom: 7px; letter-spacing: .02em; }
.field label .req { color: var(--red); margin-left: 2px; }
.field input, .field textarea, .field select {
  width: 100%;
  background: rgba(7, 11, 20, .72);
  border: 1px solid var(--line-2);
  border-radius: 10px;
  padding: 12px 14px;
  color: var(--txt);
  font-size: 14px;
  font-family: inherit;
  transition: border-color .2s, box-shadow .2s;
  outline: none;
}
.field input::placeholder, .field textarea::placeholder { color: #4A5B75; }
.field input:focus, .field textarea:focus, .field select:focus { border-color: var(--blue); box-shadow: 0 0 0 3px rgba(59, 118, 255, .16); }
.field textarea { min-height: 118px; resize: vertical; line-height: 1.7; }
.field select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%236F84A3' stroke-width='2.4' stroke-linecap='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 14px center; padding-right: 36px; }

.alert { border-radius: 11px; padding: 13px 16px; font-size: 13.5px; margin-bottom: 20px; display: flex; align-items: flex-start; gap: 9px; line-height: 1.7; }
.alert svg { width: 17px; height: 17px; flex-shrink: 0; margin-top: 2px; }
.alert-ok { background: rgba(47, 191, 143, .1); border: 1px solid rgba(47, 191, 143, .32); color: #6FE3B8; }
.alert-err { background: rgba(255, 61, 94, .09); border: 1px solid rgba(255, 61, 94, .32); color: #FF8FA3; }

.contact-grid { display: grid; grid-template-columns: .85fr 1.15fr; gap: 40px; align-items: start; }
.contact-info { display: grid; gap: 14px; }
.ci-item { display: flex; gap: 14px; padding: 20px; border-radius: var(--radius-sm); border: 1px solid var(--line); background: rgba(14, 22, 38, .55); }
.ci-item .ci-ico { width: 38px; height: 38px; flex-shrink: 0; border-radius: 10px; display: grid; place-items: center; background: rgba(59, 118, 255, .13); color: var(--blue-l); }
.ci-item .ci-ico svg { width: 18px; height: 18px; }
.ci-item span { display: block; font-size: 11.8px; color: var(--txt-3); margin-bottom: 3px; }
.ci-item b { font-size: 14.6px; font-weight: 600; word-break: break-all; }

/* ---------- 动效（仅在启用 JS 时隐藏，避免脚本失败导致内容不可见） ---------- */
.js .reveal { opacity: 0; transform: translateY(20px); transition: opacity .7s cubic-bezier(.22, .61, .36, 1), transform .7s cubic-bezier(.22, .61, .36, 1); }
.js .reveal.is-in { opacity: 1; transform: none; }
.reveal-d1 { transition-delay: .06s; }
.reveal-d2 { transition-delay: .12s; }
.reveal-d3 { transition-delay: .18s; }
.reveal-d4 { transition-delay: .24s; }

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
  .hero-grid { grid-template-columns: 1fr; gap: 46px; }
  .hero-visual { max-width: 560px; }
  .svc-grid { grid-template-columns: repeat(2, 1fr); }
  .proj-grid { grid-template-columns: repeat(2, 1fr); }
  .feat-grid { grid-template-columns: repeat(2, 1fr); }
  .flow { grid-template-columns: repeat(3, 1fr); }
  .flow-item::after { display: none; }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 32px; }
  .cta-band { grid-template-columns: 1fr; padding: 40px 34px; }
  .svc-detail-hero { grid-template-columns: 1fr; gap: 30px; }
  .svc-fact { position: static; }
  .pd-head, .pd-body { grid-template-columns: 1fr; gap: 30px; }
  .about-grid, .contact-grid { grid-template-columns: 1fr; gap: 34px; }
}

@media (max-width: 860px) {
  .nav, .header-tel { display: none; }
  .nav-toggle { display: inline-flex; margin-left: auto; }
  .section { padding: 62px 0; }
  .hero { padding: 40px 0 56px; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .why-grid { grid-template-columns: 1fr; }
  .check-list { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .pd-meta { gap: 20px; }
}

@media (max-width: 640px) {
  body { font-size: 15px; }
  .wrap { padding: 0 18px; }
  .hero h1 { font-size: 31px; }
  .hero-sub { font-size: 15px; }
  .svc-grid, .proj-grid, .feat-grid, .flow { grid-template-columns: 1fr; }
  .header-inner { height: 64px; }
  .brand-text b { font-size: 14px; }
  .brand-text span { display: none; }
  .hero-visual { min-height: 340px; }
  .hv-window { transform: none; }
  .hv-float--a { right: 6px; top: -10px; }
  .hv-float--b { left: 6px; bottom: -16px; }
  .hv-float { padding: 9px 12px; }
  .header-actions .btn { padding: 0 14px; }
  .cta-band { padding: 30px 22px; border-radius: 16px; }
  .form-card { padding: 22px; }
  .footer-top { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { font-size: 11.5px; }
  .section { padding: 52px 0; }
  .page-hero { padding: 44px 0 32px; }
}

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

/* ---------- 导航下拉 ---------- */
.nav-drop { position: relative; }
.nav-drop > a { display: inline-flex; align-items: center; gap: 4px; }
.nav-drop .caret { width: 12px; height: 12px; transition: transform .25s; opacity: .7; }
.nav-drop:hover .caret { transform: rotate(180deg); }
.nav-drop-panel {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  width: 330px;
  padding: 8px;
  border-radius: 14px;
  border: 1px solid var(--line-2);
  background: rgba(10, 16, 28, .97);
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateX(-50%) translateY(-6px);
  transition: opacity .22s, transform .22s, visibility .22s;
}
.nav-drop:hover .nav-drop-panel { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }
.nav-drop-panel a {
  display: flex;
  gap: 11px;
  align-items: flex-start;
  padding: 10px 12px;
  border-radius: 9px;
  font-size: 13.5px;
  background: none;
}
.nav-drop-panel a:hover { background: rgba(148, 178, 255, .08); }
.nav-drop-panel .di { width: 18px; height: 18px; color: var(--blue-l); margin-top: 2px; flex-shrink: 0; }
.nav-drop-panel b { display: block; font-size: 13.5px; color: var(--txt); font-weight: 600; }
.nav-drop-panel i { display: block; font-style: normal; font-size: 11px; color: var(--txt-3); line-height: 1.55; margin-top: 2px; }

/* ---------- 移动菜单子项 ---------- */
.mp-sub { margin-top: 20px; padding-top: 16px; border-top: 1px solid var(--line); }
.mp-sub p { font-size: 10.5px; letter-spacing: .16em; color: var(--txt-3); text-transform: uppercase; margin-bottom: 6px; }
.mp-sub a { display: block; padding: 9px 4px; font-size: 14px; color: var(--txt-3); }
.mp-sub a:hover { color: var(--txt); }
.mp-link .ico-sm { width: 15px; height: 15px; opacity: .45; }

.skip-link:focus { left: 12px !important; top: 12px; z-index: 999; background: #3B76FF; color: #fff; padding: 10px 16px; border-radius: 8px; }