/* ============================================================
   盈忠铝材 · 深蓝赛博朋克风
   深海军蓝底 + 霓虹青(主) + 电光蓝(辅) + 品红点缀
   网格 / 扫描线 / 辉光 / 切角 HUD 卡片
   ============================================================ */
:root {
  --bg-0: #04070f;
  --bg-1: #070d1f;
  --bg-2: #0b1430;
  --panel: #0d1734;
  --panel-2: #111d40;
  --cyan: #00e5ff;
  --cyan-soft: #22d3ee;
  --blue: #3b82f6;
  --magenta: #ff2ea6;
  --ink: #e8f2ff;
  --muted: #8ea3c8;
  --line: rgba(64, 140, 255, 0.28);
  --line-soft: rgba(64, 140, 255, 0.16);
  --glow-cyan: 0 0 10px rgba(0, 229, 255, 0.55), 0 0 30px rgba(0, 229, 255, 0.22);
  --glow-blue: 0 0 14px rgba(59, 130, 246, 0.45);
  --radius: 10px;
  --maxw: 1140px;
  --header-h: 68px;
  --mono: "JetBrains Mono", "Cascadia Code", Consolas, "Courier New", monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: var(--header-h); }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
  color: var(--ink);
  background:
    linear-gradient(rgba(4, 7, 15, 0.9), rgba(4, 7, 15, 0.94)),
    url("./img/bg/page-bg.jpg") center / cover no-repeat var(--bg-0);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

::selection { background: rgba(0, 229, 255, 0.35); color: #fff; }

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

.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 20px;
}

/* ===== 全局背景：网格 + 扫描线 ===== */
.bg-grid {
  position: fixed; inset: 0; z-index: -2; pointer-events: none;
  background:
    linear-gradient(rgba(64, 140, 255, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(64, 140, 255, 0.055) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, #000 40%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, #000 40%, transparent 100%);
}
.bg-scan {
  position: fixed; inset: 0; z-index: -1; pointer-events: none; opacity: 0.3;
  background: repeating-linear-gradient(
    0deg,
    transparent 0 2px,
    rgba(2, 8, 23, 0.26) 2px 4px
  );
}

/* ===== 通用文字 ===== */
.eyebrow {
  font-family: var(--mono);
  color: var(--cyan);
  font-weight: 600;
  letter-spacing: 0.18em;
  font-size: 13px;
  margin: 0 0 12px;
  text-shadow: 0 0 12px rgba(0, 229, 255, 0.45);
}
.eyebrow .ico { color: var(--magenta); margin-right: 6px; text-shadow: 0 0 10px rgba(255, 46, 166, 0.6); }
.neon {
  color: var(--cyan);
  text-shadow: 0 0 14px rgba(0, 229, 255, 0.75), 0 0 42px rgba(0, 229, 255, 0.35);
}

/* ===== 顶部导航 ===== */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(4, 8, 20, 0.78);
  backdrop-filter: blur(12px) saturate(160%);
  border-bottom: 1px solid var(--line-soft);
}
.nav { display: flex; align-items: center; gap: 22px; height: var(--header-h); }
.brand { display: flex; align-items: center; gap: 10px; margin-right: auto; }
.brand-logo { border-radius: 8px; filter: drop-shadow(0 0 8px rgba(0, 229, 255, 0.4)); }
.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-text strong { font-size: 18px; letter-spacing: 0.06em; }
.brand-text small {
  font-family: var(--mono);
  color: var(--cyan); font-size: 10px; letter-spacing: 0.22em;
}

.nav-links { display: flex; gap: 24px; align-items: center; }
.nav-links a {
  font-size: 14.5px; color: var(--muted);
  padding: 6px 0; position: relative; transition: color 0.2s;
  letter-spacing: 0.02em;
}
.nav-links a:hover, .nav-links a.active { color: var(--cyan); text-shadow: 0 0 10px rgba(0, 229, 255, 0.5); }
.nav-links a::after {
  content: ""; position: absolute; left: 0; bottom: 0;
  width: 0; height: 2px; background: var(--cyan);
  box-shadow: var(--glow-cyan);
  transition: width 0.25s;
}
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }

.nav-cta {
  font-family: var(--mono);
  font-size: 13px; letter-spacing: 0.08em;
  color: var(--cyan);
  border: 1px solid rgba(0, 229, 255, 0.55);
  padding: 8px 18px;
  clip-path: polygon(10px 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%, 0 10px);
  transition: background 0.2s, box-shadow 0.2s, color 0.2s;
}
.nav-cta:hover { background: rgba(0, 229, 255, 0.12); box-shadow: var(--glow-cyan); }

.nav-toggle {
  display: none;
  flex-direction: column; gap: 5px;
  width: 42px; height: 42px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(13, 23, 52, 0.8);
  cursor: pointer; align-items: center; justify-content: center;
}
.nav-toggle span {
  width: 20px; height: 2px; background: var(--cyan); border-radius: 2px;
  box-shadow: 0 0 6px rgba(0, 229, 255, 0.6);
  transition: transform 0.25s, opacity 0.25s;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== 按钮 ===== */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--mono);
  padding: 12px 26px;
  font-size: 14px; font-weight: 600; letter-spacing: 0.08em;
  cursor: pointer; border: 1px solid transparent;
  clip-path: polygon(12px 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%, 0 12px);
  transition: transform 0.15s, box-shadow 0.2s, background 0.2s;
}
.btn i { font-style: normal; transition: transform 0.2s; }
.btn:hover i { transform: translateX(4px); }
.btn-primary {
  background: linear-gradient(135deg, #0891b2, #2563eb);
  color: #fff;
  box-shadow: 0 0 18px rgba(0, 229, 255, 0.35), inset 0 0 0 1px rgba(255, 255, 255, 0.12);
}
.btn-primary:hover { box-shadow: 0 0 26px rgba(0, 229, 255, 0.6), inset 0 0 0 1px rgba(255, 255, 255, 0.2); transform: translateY(-2px); }
.btn-ghost {
  background: rgba(0, 229, 255, 0.06);
  border-color: rgba(0, 229, 255, 0.55);
  color: var(--cyan);
}
.btn-ghost:hover { background: rgba(0, 229, 255, 0.14); box-shadow: var(--glow-cyan); }
.btn-outline {
  background: transparent;
  border-color: var(--line);
  color: var(--ink);
}
.btn-outline:hover { border-color: var(--cyan); color: var(--cyan); box-shadow: var(--glow-cyan); }

/* ===== Hero ===== */
.hero { position: relative; overflow: hidden; }
.hero-bg {
  position: absolute; inset: 0; z-index: -1;
  background:
    linear-gradient(180deg, rgba(4, 8, 20, 0.78) 0%, rgba(4, 8, 20, 0.6) 45%, rgba(4, 8, 20, 0.95) 100%),
    url("./img/bg/page-bg.jpg") center 30% / cover no-repeat;
}
.hero-bg::after {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(700px 320px at 18% 30%, rgba(0, 229, 255, 0.16), transparent 65%),
    radial-gradient(600px 300px at 85% 65%, rgba(59, 130, 246, 0.18), transparent 65%);
}
.hero-inner {
  padding: 110px 20px 90px;
  display: flex;
  align-items: center;
  gap: clamp(32px, 5vw, 72px);
}
.hero-copy { flex: 1 1 520px; min-width: 0; }
.hero-visual {
  flex: 0 1 460px;
  position: relative;
  animation: heroFloat 6s ease-in-out infinite;
}
.hero-visual img {
  display: block;
  width: 100%;
  height: auto;
  clip-path: polygon(0 0, calc(100% - 26px) 0, 100% 26px, 100% 100%, 26px 100%, 0 calc(100% - 26px));
  filter: drop-shadow(0 18px 44px rgba(0, 229, 255, 0.16));
}
.hero-visual::before {
  content: "";
  position: absolute;
  inset: -1px;
  clip-path: polygon(0 0, calc(100% - 26px) 0, 100% 26px, 100% 100%, 26px 100%, 0 calc(100% - 26px));
  background: linear-gradient(135deg, rgba(0, 229, 255, 0.75), rgba(0, 229, 255, 0.08) 38%, rgba(255, 45, 149, 0.35) 100%);
  z-index: -1;
}
.hero-visual::after {
  content: ""; position: absolute; inset: 0; pointer-events: none; z-index: 1;
  clip-path: polygon(0 0, calc(100% - 26px) 0, 100% 26px, 100% 100%, 26px 100%, 0 calc(100% - 26px));
  background: linear-gradient(180deg, transparent 58%, rgba(4, 8, 20, 0.35) 100%);
}
@keyframes heroFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}
@media (max-width: 960px) {
  .hero-inner { flex-direction: column-reverse; padding: 80px 20px 70px; }
  .hero-visual { flex-basis: auto; width: min(100%, 400px); }
  .hero-copy { text-align: center; }
  .hero-actions { justify-content: center; }
}
.hero h1 {
  font-size: clamp(30px, 5.2vw, 54px);
  line-height: 1.18;
  margin: 10px 0 20px;
  letter-spacing: 0.01em;
  text-shadow: 0 4px 30px rgba(0, 0, 0, 0.55);
  max-width: 720px;
}
.hero .lead { color: var(--muted); font-size: 16.5px; max-width: 560px; }
.hero-actions { display: flex; gap: 16px; margin-top: 30px; flex-wrap: wrap; }

/* Hero 故障字效果 */
.glitch { position: relative; }
@media (min-width: 681px) {
  .glitch::before, .glitch::after {
    content: attr(data-text);
    position: absolute; inset: 0;
    max-width: 720px;
    opacity: 0.55; pointer-events: none;
    clip-path: inset(0 0 62% 0);
  }
  .glitch::before { color: var(--cyan); transform: translate(-2px, -1px); animation: glitch-a 3.4s infinite steps(1); }
  .glitch::after { color: var(--magenta); transform: translate(2px, 1px); animation: glitch-b 2.9s infinite steps(1); }
}
@keyframes glitch-a {
  0%, 92%, 100% { clip-path: inset(0 0 100% 0); }
  93% { clip-path: inset(8% 0 55% 0); }
  96% { clip-path: inset(42% 0 30% 0); }
}
@keyframes glitch-b {
  0%, 90%, 100% { clip-path: inset(100% 0 0 0); }
  91% { clip-path: inset(55% 0 8% 0); }
  95% { clip-path: inset(20% 0 60% 0); }
}

/* Hero 底部数据条（已移除，保留 .hero-strip 占位以便将来复用） */
.hero-strip { display: none; }

/* ===== 通用区块 ===== */
.section { padding: 84px 0; position: relative; }
.section-alt {
  background:
    linear-gradient(180deg, rgba(11, 20, 48, 0.55), rgba(7, 13, 31, 0.9));
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}
.section-head { text-align: center; max-width: 760px; margin: 0 auto 48px; }
.section-head.left { text-align: left; margin-left: 0; }
.section-head h2 { font-size: clamp(26px, 4vw, 38px); margin: 0 0 12px; line-height: 1.25; position: relative; display: inline-block; }
.section-head h2::after {
  content: ""; display: block; width: 58px; height: 3px; margin: 16px auto 0;
  background: linear-gradient(90deg, var(--cyan), transparent);
  box-shadow: var(--glow-cyan);
}
.section-head.left h2::after { margin: 16px 0 0; }
.section-sub { color: var(--muted); margin: 0; font-size: 15.5px; }

/* ===== 核心业务（编号卡片） ===== */
.offer-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.offer-card {
  position: relative;
  background: linear-gradient(160deg, var(--panel-2), var(--panel));
  border: 1px solid var(--line-soft);
  padding: 30px 22px 26px;
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 18px 100%, 0 calc(100% - 18px));
  transition: transform 0.2s, border-color 0.2s, box-shadow 0.25s;
  overflow: hidden;
}
.offer-card::before {
  content: ""; position: absolute; left: 0; top: 0;
  width: 100%; height: 2px;
  background: linear-gradient(90deg, var(--cyan), transparent 70%);
  opacity: 0; transition: opacity 0.25s;
}
.offer-card:hover { transform: translateY(-5px); border-color: rgba(0, 229, 255, 0.5); box-shadow: var(--glow-cyan); }
.offer-card:hover::before { opacity: 1; }
.offer-num {
  position: absolute; top: 10px; right: 16px;
  font-family: var(--mono); font-size: 30px; font-weight: 700;
  color: rgba(0, 229, 255, 0.22);
  text-shadow: 0 0 14px rgba(0, 229, 255, 0.25);
}
.offer-ico {
  width: 52px; height: 52px;
  display: flex; align-items: center; justify-content: center;
  font-size: 24px; color: var(--cyan);
  background: rgba(0, 229, 255, 0.08);
  border: 1px solid rgba(0, 229, 255, 0.35);
  margin-bottom: 16px;
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 10px 100%, 0 calc(100% - 10px));
  text-shadow: 0 0 12px rgba(0, 229, 255, 0.6);
}
.offer-card h3 { margin: 0 0 8px; font-size: 18px; letter-spacing: 0.04em; }
.offer-card p { margin: 0; color: var(--muted); font-size: 14px; }

/* ===== 产品筛选 + 画廊 ===== */
.cat-toolbar { display: flex; justify-content: flex-end; margin: 4px 0 16px; }
.cat-all {
  font-family: var(--mono);
  border: 1px solid var(--line);
  background: rgba(13, 23, 52, 0.7);
  color: var(--muted);
  padding: 8px 18px;
  font-size: 13px; letter-spacing: 0.04em;
  cursor: pointer;
  clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
  transition: all 0.2s;
}
.cat-all:hover { border-color: var(--cyan); color: var(--cyan); }
.cat-all.active {
  background: linear-gradient(135deg, rgba(8, 145, 178, 0.9), rgba(37, 99, 235, 0.9));
  color: #fff; border-color: transparent;
  box-shadow: 0 0 16px rgba(0, 229, 255, 0.4);
}

.gallery { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 18px; }
.card {
  position: relative;
  background: linear-gradient(160deg, var(--panel-2), var(--panel));
  border: 1px solid var(--line-soft);
  overflow: hidden;
  cursor: pointer;
  transition: transform 0.2s, border-color 0.2s, box-shadow 0.25s;
  display: flex; flex-direction: column;
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 14px 100%, 0 calc(100% - 14px));
}
.card::after {
  content: "⤢ 查看大图"; position: absolute; inset: 0;
  display: grid; place-items: center; pointer-events: none;
  font-family: var(--mono); font-size: 13px; letter-spacing: 0.12em; color: #fff;
  background: linear-gradient(0deg, rgba(4, 8, 20, 0.78), rgba(4, 8, 20, 0.22));
  opacity: 0; transition: opacity 0.25s;
}
.card:hover { transform: translateY(-4px); border-color: rgba(0, 229, 255, 0.55); box-shadow: var(--glow-cyan); }
.card:hover::after { opacity: 1; }
.card-img {
  aspect-ratio: 4 / 3; width: 100%; object-fit: cover;
  background: var(--bg-2);
  filter: saturate(0.92);
  transition: filter 0.25s, transform 0.3s;
}
.card:hover .card-img { filter: saturate(1.1); transform: scale(1.03); }
.card-body { padding: 12px 14px; display: flex; flex-direction: column; gap: 5px; }
.card-cat {
  font-family: var(--mono);
  font-size: 11.5px; color: var(--cyan); font-weight: 600;
  background: rgba(0, 229, 255, 0.08);
  border: 1px solid rgba(0, 229, 255, 0.3);
  align-self: flex-start;
  padding: 1px 10px; letter-spacing: 0.06em;
}
.card-name { font-size: 13.5px; color: var(--ink); font-weight: 600; }
.card.hide { display: none; }
.gallery-empty, .noscript-tip { text-align: center; color: var(--muted); padding: 30px 0; }
.noscript-tip code { background: rgba(0, 229, 255, 0.1); padding: 2px 6px; border-radius: 4px; }

/* ===== 核心优势 ===== */
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.feature {
  background: linear-gradient(160deg, var(--panel-2), var(--panel));
  border: 1px solid var(--line-soft);
  padding: 26px 22px;
  transition: transform 0.2s, border-color 0.2s, box-shadow 0.25s;
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 16px 100%, 0 calc(100% - 16px));
}
.feature:hover { transform: translateY(-4px); border-color: rgba(0, 229, 255, 0.5); box-shadow: var(--glow-cyan); }
.feature-ico {
  width: 46px; height: 46px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 0;
  background: rgba(0, 229, 255, 0.08);
  border: 1px solid rgba(0, 229, 255, 0.35);
  color: var(--cyan); font-size: 20px;
  margin-bottom: 14px;
  text-shadow: 0 0 12px rgba(0, 229, 255, 0.6);
}
.feature h3 { margin: 0 0 8px; font-size: 17px; }
.feature p { margin: 0; color: var(--muted); font-size: 14px; }

.spec-strip { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 28px; }
.spec-strip > div {
  background: rgba(13, 23, 52, 0.7);
  border: 1px solid var(--line-soft);
  border-left: 2px solid var(--cyan);
  padding: 18px; text-align: center;
}
.spec-strip strong {
  display: block; font-family: var(--mono);
  color: var(--cyan); font-size: 15px; margin-bottom: 4px;
  text-shadow: 0 0 10px rgba(0, 229, 255, 0.4);
}
.spec-strip span { color: var(--muted); font-size: 12.5px; }

/* ===== 关于工厂 ===== */
.about { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 44px; align-items: center; }
.about-media { position: relative; }
.about-img {
  border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - 22px) 0, 100% 22px, 100% 100%, 22px 100%, 0 calc(100% - 22px));
  filter: saturate(0.95) contrast(1.02);
}
.about-badge {
  position: absolute; left: -14px; bottom: 26px;
  background: linear-gradient(135deg, #0891b2, #2563eb);
  color: #fff; padding: 16px 20px;
  box-shadow: 0 0 24px rgba(0, 229, 255, 0.4);
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 12px 100%, 0 calc(100% - 12px));
}
.about-badge strong { display: block; font-family: var(--mono); font-size: 22px; letter-spacing: 0.1em; }
.about-badge span { font-size: 12px; opacity: 0.92; }
.about-copy h2 { font-size: clamp(24px, 4vw, 34px); margin: 0 0 10px; line-height: 1.3; }
.about-sub { font-family: var(--mono); color: var(--cyan); font-size: 13px; letter-spacing: 0.1em; margin: 0 0 14px; }
.about-text { color: var(--muted); font-size: 15px; margin: 0 0 24px; }

.skill { margin-bottom: 16px; }
.skill-head {
  display: flex; justify-content: space-between;
  font-size: 14px; margin-bottom: 7px;
}
.skill-head b { font-family: var(--mono); color: var(--cyan); }
.skill-bar {
  height: 8px; background: rgba(64, 140, 255, 0.14);
  border: 1px solid var(--line-soft);
  overflow: hidden;
}
.skill-bar i {
  display: block; height: 100%;
  background: linear-gradient(90deg, #0891b2, #00e5ff 60%, #7dd3fc);
  box-shadow: 0 0 12px rgba(0, 229, 255, 0.55);
}
.about-actions { display: flex; align-items: center; gap: 22px; margin-top: 26px; flex-wrap: wrap; }
.about-phone { display: flex; align-items: center; gap: 12px; }
.phone-ico {
  width: 42px; height: 42px;
  display: flex; align-items: center; justify-content: center;
  color: var(--cyan); font-size: 18px;
  border: 1px solid rgba(0, 229, 255, 0.4);
  background: rgba(0, 229, 255, 0.07);
  text-shadow: 0 0 10px rgba(0, 229, 255, 0.6);
}
.about-phone strong { display: block; font-family: var(--mono); font-size: 16px; }
.about-phone small { color: var(--muted); font-size: 12px; }

/* ===== 定制流程 ===== */
.step-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.step-card {
  background: linear-gradient(160deg, var(--panel-2), var(--panel));
  border: 1px solid var(--line-soft);
  border-top: 2px solid rgba(0, 229, 255, 0.45);
  padding: 26px 22px;
  transition: transform 0.2s, box-shadow 0.25s, border-color 0.2s;
}
.step-card:hover { transform: translateY(-4px); box-shadow: var(--glow-cyan); border-color: rgba(0, 229, 255, 0.5); }
.step-ico {
  width: 50px; height: 50px; margin-bottom: 14px;
  display: flex; align-items: center; justify-content: center;
  font-size: 22px;
  background: rgba(0, 229, 255, 0.08);
  border: 1px solid rgba(0, 229, 255, 0.35);
}
.step-card h3 { margin: 0 0 8px; font-size: 17px; }
.step-card p { margin: 0; color: var(--muted); font-size: 13.5px; }

/* ===== 服务方案 ===== */
.plan-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; align-items: stretch; }
.plan-card {
  position: relative;
  display: flex; flex-direction: column;
  background: linear-gradient(170deg, var(--panel-2), var(--panel));
  border: 1px solid var(--line-soft);
  padding: 28px 24px 24px;
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 18px 100%, 0 calc(100% - 18px));
  transition: transform 0.2s, border-color 0.2s, box-shadow 0.25s;
}
.plan-card:hover { transform: translateY(-4px); border-color: rgba(0, 229, 255, 0.5); box-shadow: var(--glow-cyan); }
.plan-card.featured {
  border-color: rgba(0, 229, 255, 0.65);
  box-shadow: 0 0 22px rgba(0, 229, 255, 0.22);
  background:
    linear-gradient(170deg, rgba(8, 145, 178, 0.16), transparent 45%),
    linear-gradient(170deg, var(--panel-2), var(--panel));
}
.plan-tag {
  position: absolute; top: 14px; right: 14px;
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.15em;
  color: #04121a; background: var(--cyan);
  padding: 3px 12px;
  box-shadow: 0 0 14px rgba(0, 229, 255, 0.6);
}
.plan-card h3 { margin: 0 0 8px; font-size: 20px; letter-spacing: 0.04em; }
.plan-desc { color: var(--muted); font-size: 13.5px; margin: 0 0 16px; flex: 1; }
.plan-price { display: flex; align-items: baseline; gap: 8px; margin: 0 0 16px; }
.plan-price b { font-family: var(--mono); font-size: 24px; color: var(--cyan); text-shadow: 0 0 14px rgba(0, 229, 255, 0.5); }
.plan-price span { color: var(--muted); font-size: 12.5px; }
.plan-card ul { list-style: none; margin: 0 0 22px; padding: 0; }
.plan-card li {
  display: flex; justify-content: space-between; gap: 12px;
  padding: 9px 0; font-size: 13.5px;
  border-bottom: 1px dashed var(--line-soft);
}
.plan-card li span { color: var(--muted); }
.plan-card li b { font-weight: 600; color: var(--ink); text-align: right; }
.plan-card .btn { justify-content: center; }

/* ===== 客户评价 ===== */
.t-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.t-card {
  background: linear-gradient(170deg, var(--panel-2), var(--panel));
  border: 1px solid var(--line-soft);
  padding: 26px 24px;
  transition: transform 0.2s, border-color 0.2s, box-shadow 0.25s;
}
.t-card:hover { transform: translateY(-4px); border-color: rgba(0, 229, 255, 0.5); box-shadow: var(--glow-cyan); }
.t-stars {
  color: var(--cyan);
  font-size: 15px; letter-spacing: 0.2em;
  text-shadow: 0 0 12px rgba(0, 229, 255, 0.6);
  margin-bottom: 12px;
}
.t-card h3 { margin: 0 0 2px; font-size: 16.5px; }
.t-card small { color: var(--magenta); font-family: var(--mono); font-size: 12px; letter-spacing: 0.06em; }
.t-card p { margin: 12px 0 0; color: var(--muted); font-size: 14px; }

/* ===== 联系我们 ===== */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 36px; align-items: start; }
.contact-info { display: flex; flex-direction: column; gap: 16px; }
.contact-item {
  display: flex; gap: 14px; align-items: flex-start;
  background: linear-gradient(160deg, var(--panel-2), var(--panel));
  border: 1px solid var(--line-soft);
  border-left: 2px solid var(--cyan);
  padding: 16px 20px;
  transition: box-shadow 0.2s;
}
.contact-item:hover { box-shadow: var(--glow-cyan); }
.contact-ico {
  width: 40px; height: 40px; flex: 0 0 40px;
  display: flex; align-items: center; justify-content: center;
  color: var(--cyan); font-size: 17px;
  background: rgba(0, 229, 255, 0.08);
  border: 1px solid rgba(0, 229, 255, 0.35);
  text-shadow: 0 0 10px rgba(0, 229, 255, 0.6);
}
.contact-item strong { display: block; font-size: 14.5px; }
.contact-item p { margin: 2px 0 0; color: var(--muted); font-size: 13.5px; }

.contact-form {
  background: linear-gradient(170deg, var(--panel-2), var(--panel));
  border: 1px solid var(--line-soft);
  border-top: 2px solid rgba(0, 229, 255, 0.45);
  padding: 28px;
}
.field { margin-bottom: 16px; }
.field label { display: block; font-family: var(--mono); font-size: 13px; margin-bottom: 7px; color: var(--cyan); letter-spacing: 0.06em; }
.field input, .field textarea {
  width: 100%;
  background: rgba(4, 8, 20, 0.7);
  border: 1px solid var(--line);
  color: var(--ink);
  padding: 12px 14px;
  font: inherit; font-size: 14px;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.field input::placeholder, .field textarea::placeholder { color: rgba(142, 163, 200, 0.55); }
.field input:focus, .field textarea:focus {
  outline: none;
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(0, 229, 255, 0.14), var(--glow-cyan);
}
.form-hint { margin: 12px 0 0; font-family: var(--mono); font-size: 13px; color: var(--cyan); }

/* ===== 页脚 ===== */
.site-footer {
  background: #03060d;
  border-top: 1px solid var(--line-soft);
  padding: 46px 0 24px;
  position: relative;
}
.site-footer::before {
  content: ""; position: absolute; top: -1px; left: 0;
  width: 220px; height: 1px;
  background: linear-gradient(90deg, var(--cyan), transparent);
  box-shadow: var(--glow-cyan);
}
.footer-inner {
  display: flex; justify-content: space-between; gap: 24px;
  flex-wrap: wrap; padding-bottom: 22px;
  border-bottom: 1px solid rgba(64, 140, 255, 0.14);
}
.footer-brand strong { font-size: 20px; letter-spacing: 0.06em; }
.footer-brand p { margin: 6px 0 0; color: var(--muted); font-size: 13.5px; }
.footer-nav { display: flex; gap: 20px; flex-wrap: wrap; align-items: center; }
.footer-nav a { color: var(--muted); font-size: 13.5px; transition: color 0.2s; }
.footer-nav a:hover { color: var(--cyan); text-shadow: 0 0 10px rgba(0, 229, 255, 0.5); }
.footer-bottom {
  display: flex; justify-content: space-between; gap: 14px; flex-wrap: wrap;
  padding-top: 18px; font-family: var(--mono);
  font-size: 12px; color: rgba(142, 163, 200, 0.75);
}

/* ===== 灯箱 ===== */
.lightbox {
  position: fixed; inset: 0; z-index: 100;
  background: rgba(2, 5, 14, 0.94);
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  padding: 30px;
}
.lightbox[hidden] { display: none; }
.lightbox img {
  max-width: 92vw; max-height: 82vh;
  border: 1px solid rgba(0, 229, 255, 0.5);
  box-shadow: 0 0 40px rgba(0, 229, 255, 0.25), 0 20px 60px rgba(0, 0, 0, 0.6);
}
.lightbox-cap { font-family: var(--mono); color: var(--cyan); margin-top: 16px; font-size: 14px; letter-spacing: 0.06em; }
.lightbox-close {
  position: absolute; top: 18px; right: 22px;
  width: 44px; height: 44px;
  border: 1px solid rgba(0, 229, 255, 0.5);
  background: rgba(0, 229, 255, 0.08);
  color: var(--cyan); font-size: 24px; cursor: pointer; line-height: 1;
}
.lightbox-close:hover { background: rgba(0, 229, 255, 0.18); box-shadow: var(--glow-cyan); }

/* ===== 滚动揭示 ===== */
.reveal { opacity: 0; transform: translateY(20px); transition: opacity 0.6s, transform 0.6s; }
.reveal.in { opacity: 1; transform: none; }

/* ===== 响应式 ===== */
@media (max-width: 900px) {
  .hero-inner { padding: 80px 20px 70px; }
  .offer-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .step-grid { grid-template-columns: repeat(2, 1fr); }
  .plan-grid { grid-template-columns: 1fr; max-width: 520px; margin: 0 auto; }
  .t-grid { grid-template-columns: 1fr; max-width: 520px; margin: 0 auto; }
  .about { grid-template-columns: 1fr; }
  .about-media { max-width: 480px; }
  .about-badge { left: 10px; }
  .contact-grid { grid-template-columns: 1fr; }
  .spec-strip { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 680px) {
  .nav-toggle { display: flex; }
  .nav-cta { display: none; }
  .nav-links {
    position: absolute;
    top: var(--header-h); left: 0; right: 0;
    flex-direction: column; align-items: stretch;
    gap: 0;
    background: rgba(4, 8, 20, 0.97);
    border-bottom: 1px solid var(--line-soft);
    padding: 8px 20px 16px;
    display: none;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 13px 0; border-bottom: 1px solid rgba(64, 140, 255, 0.12); }
  .nav-links a:last-child { border-bottom: none; }
  .offer-grid, .feature-grid, .step-grid { grid-template-columns: 1fr; }
  .section { padding: 60px 0; }
  .gallery { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 12px; }
  .about-badge { position: static; display: inline-block; margin-top: 14px; }
  .footer-bottom { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .glitch::before, .glitch::after { display: none; }
  .card:hover .card-img { transform: none; }
}

/* ============================================================
   尚菱素材融合：横幅展示 / 服务承诺 / 分类卡 / 模组横滑 / CTA
   ============================================================ */

/* --- 店铺同款横幅展示 --- */
.banner-showcase { padding: 26px 0 0; }
.banner-showcase .container { display: grid; gap: 18px; }
.banner-frame {
  position: relative;
  border: 1px solid var(--line);
  clip-path: polygon(14px 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%, 0 14px);
  box-shadow: var(--glow-blue), inset 0 0 0 1px rgba(0, 229, 255, 0.08);
  overflow: hidden;
}
.banner-frame img { width: 100%; display: block; }
.banner-frame::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  box-shadow: inset 0 0 60px rgba(0, 229, 255, 0.12);
}

/* --- 服务承诺条（复刻手机端服务承诺） --- */
.promise { padding: 34px 0 8px; }
.promise-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px;
}
.promise-item {
  display: flex; align-items: center; gap: 12px;
  background: linear-gradient(180deg, rgba(17, 29, 64, 0.9), rgba(11, 20, 48, 0.9));
  border: 1px solid var(--line-soft);
  clip-path: polygon(10px 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%, 0 10px);
  padding: 14px 16px;
}
.promise-num {
  flex: none; width: 34px; height: 34px; border-radius: 50%;
  border: 2px solid var(--cyan); color: var(--cyan);
  display: grid; place-items: center;
  font-family: var(--mono); font-weight: 700;
  box-shadow: var(--glow-cyan);
}
.promise-item strong { display: block; font-size: 15.5px; line-height: 1.3; }
.promise-item small { color: var(--muted); font-size: 12.5px; }

/* --- 分类卡导航（图片卡 + 文字卡统一） --- */
.cat-cards {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px;
  margin: 16px 0 24px;
}
.cat-card {
  position: relative; cursor: pointer; padding: 0; display: flex;
  min-height: 158px; overflow: hidden;
  background: linear-gradient(160deg, var(--panel-2), var(--panel));
  border: 1px solid var(--line-soft);
  clip-path: polygon(12px 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%, 0 12px);
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}
.cat-card img {
  width: 100%; height: 100%; min-height: 158px; object-fit: cover; display: block;
  transition: transform 0.3s ease;
}
.cat-card:hover img { transform: scale(1.05); }
.cat-card-label {
  display: grid; place-items: center; width: 100%; padding: 14px;
  font-size: 16px; font-weight: 700; color: var(--ink);
  background:
    radial-gradient(120px 60px at 80% 0%, rgba(0, 229, 255, 0.12), transparent),
    linear-gradient(160deg, rgba(0, 229, 255, 0.05), transparent 60%);
}
.cat-card:hover { transform: translateY(-4px); border-color: var(--cyan); box-shadow: var(--glow-cyan); }
.cat-card.active { border-color: var(--cyan); box-shadow: var(--glow-cyan); }
.cat-card.active::after {
  content: "● 当前"; position: absolute; top: 8px; right: 10px;
  font-size: 11px; color: var(--cyan); font-family: var(--mono);
  text-shadow: var(--glow-cyan); z-index: 2;
}

/* --- 模组详情横向浏览 --- */
.mod-strip {
  display: flex; gap: 16px; overflow-x: auto; padding: 6px 2px 18px;
  scroll-snap-type: x mandatory; -webkit-overflow-scrolling: touch;
}
.mod-strip::-webkit-scrollbar { height: 8px; }
.mod-strip::-webkit-scrollbar-track { background: rgba(64, 140, 255, 0.08); }
.mod-strip::-webkit-scrollbar-thumb { background: rgba(0, 229, 255, 0.4); border-radius: 4px; }
.modshot {
  flex: 0 0 auto; width: min(320px, 74vw); margin: 0; cursor: pointer;
  scroll-snap-align: center;
  border: 1px solid var(--line-soft);
  clip-path: polygon(10px 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%, 0 10px);
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}
.modshot img { width: 100%; display: block; }
.modshot:hover { border-color: var(--cyan); box-shadow: var(--glow-cyan); }

/* --- 48小时发货 CTA 横幅 --- */
.cta-banner {
  position: relative; padding: 66px 0;
  background:
    linear-gradient(90deg, rgba(4, 8, 20, 0.93) 0%, rgba(4, 8, 20, 0.72) 55%, rgba(4, 8, 20, 0.55) 100%),
    url("./img/banners/banner-48h.jpg") center / cover no-repeat;
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}
.cta-inner {
  display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap;
}
.cta-banner h2 { margin: 0 0 8px; font-size: clamp(24px, 3.4vw, 36px); }
.cta-banner p { margin: 0; color: var(--muted); }
.btn-lg { padding: 15px 34px; font-size: 16.5px; }

@media (max-width: 960px) {
  .promise-grid { grid-template-columns: repeat(2, 1fr); }
  .cat-cards { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 680px) {
  .promise-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
  .promise-item { padding: 10px 12px; }
  .promise-item strong { font-size: 13.5px; }
  .cat-cards { gap: 10px; margin: 18px 0 16px; }
  .cta-inner { flex-direction: column; align-items: flex-start; }
}