/* =====================================================
   5V15A 宣传页 V3 - 深色沉浸版（.w5a 作用域隔离）
   品牌色 #f0b100 · 2026 设计趋势：滚动叙事 / 磁吸交互 /
   Bento 网格 / 60fps / prefers-reduced-motion
   ===================================================== */
.w5a {
  --gold: #f0b100;
  --gold-dark: #c48d00;
  --bg: #0a0e14;
  --bg-2: #0e141d;
  --card: #131a26;
  --line: rgba(255,255,255,.08);
  --txt: #e8eaf0;
  --txt-2: rgba(232,234,240,.62);
  --txt-3: rgba(232,234,240,.38);
  --blue: #5fb4ff;
  --ease: cubic-bezier(.2,.7,.3,1);
  font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--txt); background: var(--bg);
  font-size: 16px; line-height: 1.7; overflow-x: hidden;
}
.w5a * { box-sizing: border-box; }
.w5a img { max-width: 100%; display: block; }
.w5a a { color: inherit; text-decoration: none; }
.w5a .container { max-width: 1280px; margin: 0 auto; padding: 0 32px; }
.w5a section { padding: 100px 0; position: relative; }

/* ---------- 标题 ---------- */
.w5a .h-title {
  font-size: clamp(32px, 4.2vw, 54px); font-weight: 800;
  line-height: 1.12; letter-spacing: -1px; color: #fff; margin: 0 0 20px;
}
.w5a .h-sub { font-size: clamp(15px,1.2vw,17px); color: var(--txt-2); line-height: 1.85; max-width: 780px; margin: 0; }
.w5a .h-rule { width: 44px; height: 3px; background: var(--gold); margin-bottom: 24px; }
.w5a .kicker {
  display: inline-block; font-size: 12.5px; font-weight: 700;
  color: var(--gold); letter-spacing: 3px; margin-bottom: 16px;
}

/* ---------- 按钮（磁吸） ---------- */
.w5a .btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 32px; border-radius: 999px;
  font-weight: 600; font-size: 15px; cursor: pointer;
  border: 1.5px solid transparent; white-space: nowrap;
  transition: box-shadow .35s var(--ease), background .35s, color .35s, border-color .35s;
  will-change: transform;
}
.w5a .btn-primary { background: var(--gold); color: #111; }
.w5a .btn-primary:hover { box-shadow: 0 0 36px rgba(240,177,0,.5); }
.w5a .btn-ghost { background: transparent; color: #fff; border-color: rgba(255,255,255,.25); }
.w5a .btn-ghost:hover { border-color: var(--gold); color: var(--gold); }
.w5a .btn svg { transition: transform .3s var(--ease); }
.w5a .btn:hover svg { transform: translateX(4px); }



/* ---------- 动画基础 ---------- */
.w5a.js-on .rv { opacity: 0; transform: translateY(34px); transition: opacity .8s var(--ease), transform .8s var(--ease); }
.w5a.js-on .rv.in { opacity: 1; transform: none; }
.w5a .rv-d1 { transition-delay: .08s; } .w5a .rv-d2 { transition-delay: .16s; }
.w5a .rv-d3 { transition-delay: .24s; } .w5a .rv-d4 { transition-delay: .32s; }

/* 图片懒加载 */
.w5a.js-on img.lazy { opacity: 0; filter: blur(10px); transform: scale(1.02); transition: opacity .7s var(--ease), filter .7s var(--ease), transform .7s var(--ease); }
.w5a.js-on img.lazy.loaded { opacity: 1; filter: blur(0); transform: none; }

/* ---------- HERO ---------- */
.w5a .hero {
  display: flex; align-items: center;
  padding: 80px 0 90px; overflow: hidden;
  background:
    radial-gradient(ellipse 55% 45% at 76% 42%, rgba(240,177,0,.08) 0%, transparent 65%),
    radial-gradient(ellipse 40% 55% at 18% 80%, rgba(95,180,255,.05) 0%, transparent 60%),
    var(--bg);
}
.w5a .hero-grid-bg {
  position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 40%, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 40%, #000 30%, transparent 75%);
}
.w5a .hero-inner { position: relative; display: grid; grid-template-columns: 1.05fr 1fr; gap: 40px; align-items: center; width: 100%; }
.w5a .hero-brand { font-size: 15px; color: var(--txt-2); letter-spacing: .5px; margin-bottom: 16px; }
.w5a .hero-title {
  font-size: clamp(42px, 5vw, 72px); font-weight: 800;
  line-height: 1.06; letter-spacing: -2px; color: #fff; margin: 0 0 24px;
}
.w5a .hero-title .line { display: block; overflow: hidden; }
.w5a .hero-title .line > span { display: inline-block; transform: translateY(110%); animation: lineUp .9s var(--ease) forwards; }
.w5a .hero-title .line:nth-child(2) > span { animation-delay: .12s; }
@keyframes lineUp { to { transform: none; } }
.w5a .hero-title em { font-style: normal; color: var(--gold); }
.w5a .hero-model {
  display: inline-block; background: var(--gold); color: #111;
  font-size: 14px; font-weight: 700; padding: 8px 20px;
  border-radius: 999px; letter-spacing: 1px; margin-bottom: 26px;
  box-shadow: 0 0 28px rgba(240,177,0,.35);
}
.w5a .hero-desc { font-size: 16px; color: var(--txt-2); line-height: 1.95; max-width: 520px; margin: 0 0 36px; }
.w5a .hero-desc b { color: var(--txt); font-weight: 600; }
.w5a .hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.w5a .hero-stats-mini { display: flex; gap: 36px; margin-top: 46px; }
.w5a .hsm { }
.w5a .hsm .n { font-size: 26px; font-weight: 800; color: #fff; letter-spacing: -1px; font-feature-settings: "tnum"; }
.w5a .hsm .n i { font-style: normal; color: var(--gold); }
.w5a .hsm .l { font-size: 12px; color: var(--txt-3); letter-spacing: 1px; margin-top: 2px; }

/* Hero 产品图 3D tilt */
.w5a .hero-img { position: relative; display: flex; justify-content: center; perspective: 1200px; }
.w5a .hero-img::before {
  content: ""; position: absolute; inset: 12% 8%;
  background: radial-gradient(ellipse, rgba(240,177,0,.14) 0%, transparent 65%);
  filter: blur(30px);
}
.w5a .tilt {
  position: relative; transform-style: preserve-3d;
  transition: transform .15s linear;
  will-change: transform;
}
.w5a .tilt img {
  max-height: 640px; object-fit: contain;
  filter: drop-shadow(0 40px 60px rgba(0,0,0,.6));
  animation: heroFloat 7s ease-in-out infinite;
}
@keyframes heroFloat { 0%,100%{ transform: translateY(0); } 50%{ transform: translateY(-14px); } }
.w5a .hero-chip {
  position: absolute; padding: 10px 16px;
  background: rgba(19,26,38,.85); border: 1px solid var(--line);
  border-radius: 12px; backdrop-filter: blur(8px);
  font-size: 12.5px; color: var(--txt-2);
  transform: translateZ(60px);
  box-shadow: 0 12px 30px rgba(0,0,0,.4);
}
.w5a .hero-chip b { display: block; color: var(--gold); font-size: 16px; }
.w5a .hc1 { top: 12%; left: -4%; animation: chipFloat 6s ease-in-out infinite; }
.w5a .hc2 { bottom: 16%; right: -2%; animation: chipFloat 6s ease-in-out 1.2s infinite; }
@keyframes chipFloat { 0%,100%{ margin-top: 0; } 50%{ margin-top: -10px; } }

/* ---------- 数据带（计数） ---------- */
.w5a .databar { padding: 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--bg-2); }
.w5a .databar-grid { display: grid; grid-template-columns: repeat(6, 1fr); }
.w5a .databar-item { padding: 36px 14px; text-align: center; border-right: 1px solid var(--line); transition: background .3s; }
.w5a .databar-item:last-child { border-right: none; }
.w5a .databar-item:hover { background: rgba(240,177,0,.05); }
.w5a .databar-num { font-size: 34px; font-weight: 800; color: var(--gold); letter-spacing: -1px; line-height: 1.1; margin-bottom: 6px; font-feature-settings: "tnum"; }
.w5a .databar-label { font-size: 12.5px; color: var(--txt-2); letter-spacing: 1px; }

/* ---------- 应用场景 ---------- */
.w5a .apps-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 30px; flex-wrap: wrap; margin-bottom: 48px; }
.w5a .apps-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.w5a .app-card {
  position: relative; height: 300px; border-radius: 20px; overflow: hidden;
  border: 1px solid var(--line); display: flex; align-items: center; justify-content: center;
  transition: transform .45s var(--ease), border-color .45s, box-shadow .45s;
  cursor: pointer;
}
.w5a .app-card:hover { border-color: rgba(240,177,0,.4); transform: translateY(-6px); box-shadow: 0 24px 60px rgba(0,0,0,.5); }
.w5a .app-card .app-glow { position: absolute; inset: 0; background: radial-gradient(ellipse 70% 60% at 50% 60%, rgba(255,255,255,.06), transparent 70%); transition: opacity .4s; }
.w5a .app-card:hover .app-glow { opacity: 1.6; }
.w5a .app-card .label { position: relative; z-index: 2; font-size: 25px; font-weight: 700; color: #fff; text-align: center; letter-spacing: 1px; text-shadow: 0 4px 24px rgba(0,0,0,.6); line-height: 1.4; margin-top: 90px; }
.w5a .app-card .label small { display: block; font-size: 12px; font-weight: 400; color: var(--txt-2); letter-spacing: 3px; margin-top: 6px; }
.w5a .app-card.wide { grid-column: 1 / -1; height: 280px; }
.w5a .app-laptop { background: linear-gradient(140deg, #23272f, #3a3f4a); }
.w5a .app-consumer { background: linear-gradient(140deg, #2a2d33, #44474e); }
.w5a .app-comm { background: linear-gradient(140deg, #1d2530, #323d4d); }
.w5a .app-svg { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; transition: transform .6s var(--ease); }
.w5a .app-card:hover .app-svg { transform: translateY(-8px) scale(1.04); }

/* ---------- 稳态采集 ---------- */
.w5a .acq { background: var(--bg-2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.w5a .acq-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 20px; margin: 56px 0; }
.w5a .acq-item { text-align: center; }
.w5a .acq-icon {
  width: 88px; height: 88px; margin: 0 auto 18px;
  background: linear-gradient(160deg, #2b3442, #1c232e);
  border: 1px solid var(--line); border-radius: 22px;
  display: flex; align-items: center; justify-content: center;
  transition: all .35s var(--ease);
}
.w5a .acq-item:hover .acq-icon { border-color: var(--gold); box-shadow: 0 0 30px rgba(240,177,0,.18); transform: translateY(-4px); }
.w5a .acq-icon svg { color: var(--gold); }
.w5a .acq-name { font-size: 14.5px; font-weight: 600; color: var(--txt); margin-bottom: 4px; }
.w5a .acq-val { font-size: 14px; color: var(--txt-2); font-feature-settings: "tnum"; }
.w5a .acq-note { font-size: 16px; color: var(--txt); line-height: 1.95; max-width: 900px; margin: 0 0 48px; }
.w5a .range-table { width: 100%; border-collapse: separate; border-spacing: 0; border: 1px solid rgba(255,255,255,.14); border-radius: 18px; overflow: hidden; background: var(--card); }
.w5a .range-table th, .w5a .range-table td { padding: 18px 22px; text-align: center; border-bottom: 1px solid var(--line); font-size: 15px; }
.w5a .range-table th { background: rgba(255,255,255,.06); color: #fff; font-weight: 700; letter-spacing: 1px; }
.w5a .range-table th:first-child, .w5a .range-table td:first-child { text-align: left; font-weight: 600; }
.w5a .range-table td { color: var(--txt-2); }
.w5a .range-table tr:last-child td { border-bottom: none; }
.w5a .range-table .gold { color: var(--gold); font-weight: 700; }
.w5a .tbl-note { margin-top: 16px; font-size: 13px; color: var(--txt-3); }

/* ---------- 四量程 ---------- */
.w5a .range-card {
  margin-top: 52px;
  background: linear-gradient(135deg, #16324f 0%, #0d2036 100%);
  border: 1px solid rgba(95,180,255,.2);
  border-radius: 26px; padding: 24px 32px 0;
  position: relative; overflow: hidden;
}
.w5a .range-stage { position: relative; height: 560px; }
.w5a .range-glow {
  position: absolute; left: 50%; bottom: -60px;
  width: 78%; height: 320px; transform: translateX(-50%);
  background: radial-gradient(ellipse, rgba(95,180,255,.22) 0%, transparent 65%);
  pointer-events: none; z-index: 0;
}
.w5a .range-tag {
  position: absolute; background: rgba(13,32,54,.75);
  border: 1px solid rgba(95,180,255,.4); border-radius: 10px;
  color: #cfe8ff; font-size: 15px; font-weight: 600;
  padding: 10px 18px; display: flex; align-items: center; gap: 10px;
  white-space: nowrap; cursor: default; z-index: 3;
  backdrop-filter: blur(6px);
  box-shadow: 0 8px 24px rgba(0,0,0,.3);
  transition: border-color .3s var(--ease), background .3s var(--ease), transform .3s var(--ease);
}
.w5a .range-tag:hover { border-color: var(--gold); background: rgba(240,177,0,.12); transform: scale(1.05); }
.w5a .range-tag i { width: 4px; height: 18px; background: var(--gold); border-radius: 2px; flex-shrink: 0; }
.w5a .range-tag .rng-curr { display: block; font-size: 12px; color: var(--txt-2); font-weight: 400; margin-top: 2px; }
.w5a .rt1 { left: 10%; top: 50%; } .w5a .rt2 { left: 10%; top: 9%; }
.w5a .rt3 { right: 10%; top: 9%; } .w5a .rt4 { right: 10%; top: 50%; }
.w5a .range-center { position: absolute; left: 50%; top: 39%; transform: translate(-50%,-50%); text-align: center; z-index: 3; }
.w5a .range-center .num { font-size: clamp(52px,6vw,88px); font-weight: 800; color: #fff; letter-spacing: -3px; line-height: 1; text-shadow: 0 0 60px rgba(95,180,255,.45); }
.w5a .range-center .fs { font-size: 20px; color: var(--gold); letter-spacing: 6px; font-weight: 700; margin-top: 6px; }
.w5a .range-lines { position: absolute; inset: 0; z-index: 1; }
.w5a .range-lines svg { width: 100%; height: 100%; }
.w5a .range-lines path { stroke-dasharray: 700; }
.w5a.js-on .range-lines path { stroke-dashoffset: 700; transition: stroke-dashoffset 1.4s var(--ease); }
.w5a.js-on .range-lines.draw path { stroke-dashoffset: 0; }
.w5a .range-device {
  position: absolute; left: 50%; bottom: -6px;
  transform: translateX(-50%);
  width: min(680px, 92%); height: 300px;
  overflow: hidden; z-index: 2;
  -webkit-mask-image: linear-gradient(180deg, transparent 0%, #000 12%);
  mask-image: linear-gradient(180deg, transparent 0%, #000 12%);
}
.w5a .range-device img {
  width: 100%; height: 100%;
  object-fit: cover; object-position: 50% 56%;
}

/* ---------- 尺寸 ---------- */
.w5a .size-sec { background: var(--bg-2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.w5a .size-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 50px; align-items: center; }
.w5a .size-tags { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 24px; }
.w5a .size-tag2 {
  padding: 10px 18px; border-radius: 10px; font-size: 13.5px; font-weight: 600;
  background: var(--card); border: 1px solid var(--line); color: var(--txt-2);
}
.w5a .size-tag2 b { color: var(--gold); margin-right: 6px; }
.w5a .size-visual { position: relative; text-align: center; padding: 10px 0 52px; }
.w5a .size-visual img {
  width: min(600px, 100%); height: 320px;
  object-fit: cover; object-position: 50% 58%;
  margin: 0 auto;
  filter: drop-shadow(0 30px 50px rgba(0,0,0,.5));
}
.w5a .dim { position: absolute; color: #fff; font-weight: 700; font-size: clamp(18px,2.2vw,28px); }
.w5a .dim small { font-size: .5em; font-weight: 400; color: var(--txt-2); }
.w5a .dim-w { left: 50%; bottom: 6px; transform: translateX(-50%); display: flex; flex-direction: column; align-items: center; gap: 8px; }
.w5a .dim-w .dim-line { height: 1.5px; width: min(520px, 74vw); background: linear-gradient(90deg, transparent, #fff 8%, #fff 92%, transparent); position: relative; }
.w5a .dim-w .dim-line::before, .w5a .dim-w .dim-line::after { content: ""; position: absolute; top: -5px; border: 6px solid transparent; }
.w5a .dim-w .dim-line::before { left: -2px; border-right-color: #fff; }
.w5a .dim-w .dim-line::after { right: -2px; border-left-color: #fff; }
.w5a .size-note { margin-top: 40px; font-size: 13px; color: var(--txt-3); }

/* ---------- 测试模式 ---------- */
.w5a .modes-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px 24px; margin-top: 60px; }
.w5a .mode-item { text-align: center; }
.w5a .mode-icon {
  width: 104px; height: 104px; margin: 0 auto 20px;
  background: linear-gradient(160deg, #33383f, #22262c);
  border: 1px solid var(--line); border-radius: 28px;
  display: flex; align-items: center; justify-content: center;
  transition: all .35s var(--ease);
}
.w5a .mode-item:hover .mode-icon { border-color: var(--gold); box-shadow: 0 0 36px rgba(240,177,0,.2); transform: translateY(-5px); }
.w5a .mode-icon svg { color: var(--gold); }
.w5a .mode-icon .mono { font-family: "Courier New", monospace; font-weight: 700; font-size: 21px; color: #fff; letter-spacing: 1px; }
.w5a .mode-icon .mono i { font-style: normal; color: var(--gold); }
.w5a .mode-name { font-size: 15.5px; color: var(--txt-2); font-weight: 500; }

/* ---------- dQ/dV ---------- */
.w5a .dqdv { background: var(--bg-2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.w5a .dqdv-grid { margin-top: 52px; border: 1px solid rgba(95,180,255,.18); border-radius: 20px; overflow: hidden; }
.w5a .dqdv-grid img { width: 100%; height: auto; display: block; }


/* ---------- 能量回馈 ---------- */
.w5a .energy-head { display: grid; grid-template-columns: 1.3fr 1fr; gap: 60px; align-items: end; margin-bottom: 52px; }
.w5a .energy-badge { justify-self: end; text-align: center; }
.w5a .eb-icon {
  width: 108px; height: 108px; margin: 0 auto 14px;
  background: linear-gradient(160deg, #2b3442, #1c232e);
  border: 1px solid var(--line); border-radius: 28px;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 0 40px rgba(240,177,0,.12);
  animation: ebPulse 3.2s ease-in-out infinite;
}
@keyframes ebPulse { 0%,100%{ box-shadow: 0 0 24px rgba(240,177,0,.1);} 50%{ box-shadow: 0 0 52px rgba(240,177,0,.3);} }
.w5a .eb-name { font-size: 15px; color: var(--txt-2); }
.w5a .eb-val { font-size: 27px; font-weight: 800; color: var(--gold); letter-spacing: -1px; }
.w5a .energy-flow { background: linear-gradient(160deg, #d9ebf9, #bcdcf5); border-radius: 26px; padding: 20px; }
.w5a .energy-flow video { width: 100%; height: auto; display: block; border-radius: 16px; }
.w5a .flow-anim { stroke-dasharray: 8 6; animation: flowMove 1.2s linear infinite; }
@keyframes flowMove { to { stroke-dashoffset: -28; } }

/* ---------- 竞品对标 Bento ---------- */
.w5a .vs { background: var(--bg-2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.w5a .bento { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 52px; }
.w5a .bento-card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: 20px; padding: 30px 26px;
  transition: all .4s var(--ease);
  position: relative; overflow: hidden;
}
.w5a .bento-card:hover { border-color: rgba(240,177,0,.35); transform: translateY(-5px); }
.w5a .bento-card.big { grid-column: span 2; }
.w5a .bento-card.gold-bg { background: linear-gradient(150deg, rgba(240,177,0,.14), rgba(240,177,0,.04)); border-color: rgba(240,177,0,.3); }
.w5a .bento-num { font-size: 40px; font-weight: 800; color: var(--gold); letter-spacing: -1.5px; line-height: 1; margin-bottom: 10px; font-feature-settings: "tnum"; }
.w5a .bento-num small { font-size: .5em; }
.w5a .bento-name { font-size: 16.5px; font-weight: 700; color: #fff; margin-bottom: 8px; }
.w5a .bento-desc { font-size: 13.5px; color: var(--txt-2); line-height: 1.75; }
.w5a .bento-icon { position: absolute; right: 18px; top: 22px; color: rgba(240,177,0,.35); }

/* ---------- 安全 ---------- */
.w5a .safety-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 60px; align-items: center; }
.w5a .safety-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 42px; }
.w5a .sf-card {
  display: flex; align-items: center; gap: 12px;
  background: var(--card); border: 1px solid var(--line);
  border-radius: 14px; padding: 15px 16px;
  font-size: 14px; font-weight: 500; color: var(--txt-2);
  transition: all .35s var(--ease);
}
.w5a .sf-card:hover { border-color: rgba(240,177,0,.45); color: #fff; transform: translateY(-3px); box-shadow: 0 10px 26px rgba(0,0,0,.35); }
.w5a .sf-ico {
  flex-shrink: 0; width: 38px; height: 38px; border-radius: 10px;
  background: rgba(240,177,0,.1); border: 1px solid rgba(240,177,0,.3);
  display: flex; align-items: center; justify-content: center; color: var(--gold);
  transition: all .35s var(--ease);
}
.w5a .sf-card:hover .sf-ico { background: var(--gold); color: #111; box-shadow: 0 0 18px rgba(240,177,0,.4); }
.w5a .safety-visual { position: relative; display: flex; justify-content: center; align-items: center; min-height: 620px; }
.w5a .shield-svg { position: absolute; width: 100%; max-width: 640px; height: auto; z-index: 1; }
.w5a .shield-svg path { fill: none; stroke: #5fb4ff; }
.w5a .safety-visual::after {
  content: ""; position: absolute; inset: 0; z-index: 0;
  background: radial-gradient(ellipse 55% 60% at 50% 52%, rgba(95,180,255,.13) 0%, transparent 65%);
}
.w5a .safety-visual img { position: relative; z-index: 2; max-height: 560px; filter: drop-shadow(0 30px 60px rgba(0,0,0,.55)); }
.w5a .sf-badge {
  position: absolute; z-index: 3;
  width: 62px; height: 62px; border-radius: 50%;
  background: rgba(19,26,38,.85); border: 1px solid rgba(95,180,255,.35);
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  display: flex; align-items: center; justify-content: center; color: var(--blue);
  box-shadow: 0 12px 30px rgba(0,0,0,.4), 0 0 24px rgba(95,180,255,.12);
  animation: chipFloat 6s ease-in-out infinite;
}
.w5a .sf-badge.b1 { top: 10%; left: 6%; }
.w5a .sf-badge.b2 { top: 6%; right: 10%; animation-delay: 1.2s; }
.w5a .sf-badge.b3 { bottom: 24%; left: 2%; animation-delay: 2s; }
.w5a .sf-badge.b4 { bottom: 14%; right: 4%; animation-delay: .6s; }

/* ---------- 软件 ---------- */
.w5a .sw-sec { background: var(--bg-2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.w5a .sw-shot { margin-top: 52px; border: 1px solid var(--line); border-radius: 18px; overflow: hidden; background: #fff; box-shadow: 0 30px 80px rgba(0,0,0,.45); }
.w5a .sw-shot-bar { height: 40px; background: linear-gradient(180deg, #3a3f47, #2b2f36); display: flex; align-items: center; padding: 0 16px; gap: 8px; }
.w5a .sw-shot-bar i { width: 12px; height: 12px; border-radius: 50%; background: #565b63; }
.w5a .sw-shot-bar i:first-child { background: var(--gold); }
.w5a .sw-shot-bar span { margin-left: 12px; color: rgba(255,255,255,.55); font-size: 12.5px; letter-spacing: 1px; }
.w5a .sw-body { display: grid; grid-template-columns: 200px 1fr 260px; min-height: 380px; font-size: 12.5px; color: #444; }
.w5a .sw-side { background: #eef0f3; border-right: 1px solid #ddd; padding: 14px 10px; }
.w5a .sw-menu { padding: 9px 12px; border-radius: 6px; margin-bottom: 4px; color: #555; font-weight: 500; }
.w5a .sw-menu.on { background: #fff; color: #111; font-weight: 700; box-shadow: 0 1px 4px rgba(0,0,0,.1); border-left: 3px solid var(--gold); }
.w5a .sw-main { padding: 16px; background: #fafbfc; }
.w5a .sw-toolbar { display: flex; gap: 6px; margin-bottom: 12px; }
.w5a .sw-toolbar i { width: 26px; height: 26px; background: #fff; border: 1px solid #ddd; border-radius: 5px; }
.w5a .sw-cols { display: grid; grid-template-columns: repeat(6, 1fr); gap: 8px; margin-bottom: 10px; }
.w5a .sw-cols span { font-size: 11px; color: #888; }
.w5a .sw-rows { background: #fff; border: 1px solid #e5e5e5; border-radius: 8px; overflow: hidden; }
.w5a .sw-row { display: grid; grid-template-columns: repeat(6, 1fr); gap: 8px; padding: 10px 12px; border-bottom: 1px solid #f0f0f0; font-size: 11.5px; color: #555; }
.w5a .sw-row:nth-child(odd) { background: #fcfcfc; }
.w5a .sw-row:last-child { border-bottom: none; }
.w5a .sw-row .gv { color: var(--gold-dark); font-weight: 700; }
.w5a .sw-right { background: #f5f6f8; border-left: 1px solid #ddd; padding: 14px; }
.w5a .sw-right h5 { margin: 0 0 10px; font-size: 12px; color: #777; letter-spacing: 1px; }
.w5a .sw-kv { display: flex; justify-content: space-between; padding: 7px 0; border-bottom: 1px dashed #e0e0e0; font-size: 11.5px; color: #555; }
.w5a .sw-kv b { color: #111; font-weight: 600; }
.w5a .sw-live { display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: #2ecc71; margin-right: 6px; animation: liveBlink 1.4s infinite; }
@keyframes liveBlink { 50% { opacity: .3; } }
.w5a .sw-caption { margin-top: 22px; }
.w5a .sw-caption b { color: #fff; font-size: 17px; }
.w5a .sw-caption p { color: var(--txt-2); font-size: 14.5px; margin: 8px 0 0; max-width: 720px; }

/* ---------- 外围设备 ---------- */
.w5a .eco-top { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr; gap: 14px; align-items: center; margin-top: 56px; }
.w5a .eco-node { background: linear-gradient(160deg, #232b38, #171e29); border: 1px solid var(--line); border-radius: 18px; padding: 26px 18px; text-align: center; position: relative; transition: all .3s; }
.w5a .eco-node:hover { border-color: rgba(95,180,255,.4); transform: translateY(-4px); }
.w5a .eco-tag { position: absolute; top: -11px; left: 14px; background: var(--blue); color: #0a0e14; font-size: 11px; font-weight: 700; padding: 3px 10px; border-radius: 6px; }
.w5a .eco-name { font-size: 15px; font-weight: 600; color: #fff; margin-top: 12px; }
.w5a .eco-node svg { color: var(--blue); opacity: .9; }
.w5a .eco-link { text-align: center; color: var(--txt-3); font-size: 11px; letter-spacing: 1px; display: flex; flex-direction: column; align-items: center; gap: 5px; }
.w5a .eco-link .eco-txt { line-height: 1; }
.w5a .eco-link .arr-line { position: relative; width: 64px; height: 1.5px; background: linear-gradient(90deg, transparent, rgba(95,180,255,.7), transparent); }
.w5a .eco-link .arr-line::after { content: ""; position: absolute; top: -4.5px; border: 5px solid transparent; }
.w5a .eco-link .arr-r::after { right: 0; border-left-color: #5fb4ff; }
.w5a .eco-link .arr-l::after { left: 0; border-right-color: #5fb4ff; }
.w5a .eco-link .line { width: 60px; height: 1.5px; margin: 6px auto; background: linear-gradient(90deg, transparent, rgba(95,180,255,.6), transparent); }
.w5a .eco-mid { display: flex; flex-direction: column; align-items: center; margin: 30px 0; }
.w5a .eco-mid .line-v { width: 1.5px; height: 34px; background: rgba(95,180,255,.5); }
.w5a .eco-hub { width: 120px; height: 120px; background: radial-gradient(circle, #1d2836, #121822); border: 1px solid rgba(95,180,255,.35); border-radius: 28px; display: flex; align-items: center; justify-content: center; box-shadow: 0 0 60px rgba(95,180,255,.12); color: var(--blue); }
.w5a .eco-bottom { display: grid; grid-template-columns: repeat(6, 1fr); gap: 16px; }
.w5a .eco-dev { background: linear-gradient(180deg, rgba(95,180,255,.14), rgba(95,180,255,.03)); border: 1px solid rgba(95,180,255,.25); border-radius: 14px 14px 40px 40px; padding: 22px 10px 26px; text-align: center; font-size: 12.5px; color: #cfe8ff; transition: all .3s; }
.w5a .eco-dev:hover { border-color: var(--gold); color: #fff; transform: translateY(-4px); }
.w5a .eco-dev svg { display: block; margin: 0 auto 12px; color: var(--blue); }

/* ---------- 规格（分组卡片） ---------- */
.w5a .specs-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; margin-top: 52px; }
.w5a .spec-card {
  position: relative; background: var(--card);
  border: 1px solid var(--line); border-radius: 20px;
  padding: 26px 28px 16px; overflow: hidden;
  transition: border-color .4s var(--ease), transform .4s var(--ease), box-shadow .4s var(--ease);
}
.w5a .spec-card:hover { border-color: rgba(240,177,0,.32); transform: translateY(-4px); box-shadow: 0 20px 50px rgba(0,0,0,.35); }
.w5a .spec-ghost {
  position: absolute; top: 12px; right: 22px;
  font-size: 54px; font-weight: 800; line-height: 1;
  color: rgba(240,177,0,.08); letter-spacing: -2px;
  pointer-events: none; font-feature-settings: "tnum";
}
.w5a .spec-head { display: flex; align-items: center; gap: 14px; margin-bottom: 14px; padding-bottom: 15px; border-bottom: 1px solid var(--line); }
.w5a .spec-ico {
  flex-shrink: 0; width: 40px; height: 40px; border-radius: 12px;
  background: rgba(240,177,0,.1); border: 1px solid rgba(240,177,0,.3);
  display: flex; align-items: center; justify-content: center; color: var(--gold);
}
.w5a .spec-name { font-size: 16.5px; font-weight: 700; color: #fff; }
.w5a .spec-name small { display: block; font-size: 10.5px; color: var(--txt-3); font-weight: 400; letter-spacing: 2.5px; margin-top: 3px; }
.w5a .spec-row { display: flex; justify-content: space-between; align-items: baseline; gap: 18px; padding: 9px 0; border-bottom: 1px dashed rgba(255,255,255,.07); }
.w5a .spec-row:last-child { border-bottom: none; }
.w5a .spec-k { flex-shrink: 0; font-size: 13.5px; color: var(--txt-2); }
.w5a .spec-v { font-size: 13.5px; font-weight: 600; color: #fff; text-align: right; font-feature-settings: "tnum"; }
.w5a .spec-v.gold { color: var(--gold); }
.w5a .spec-pills { display: flex; flex-wrap: wrap; gap: 6px; justify-content: flex-end; }
.w5a .spec-pill {
  font-size: 11.5px; font-weight: 600; color: var(--gold);
  border: 1px solid rgba(240,177,0,.35); background: rgba(240,177,0,.07);
  padding: 3px 10px; border-radius: 999px; white-space: nowrap;
}

/* ---------- CTA ---------- */
.w5a .cta {
  background: radial-gradient(ellipse 50% 80% at 50% 120%, rgba(240,177,0,.12) 0%, transparent 60%), var(--bg-2);
  border-top: 1px solid var(--line); text-align: center; padding: 110px 0;
}
.w5a .cta h2 { font-size: clamp(32px,4.5vw,58px); font-weight: 800; color: #fff; letter-spacing: -1.5px; line-height: 1.15; margin: 0 0 18px; }
.w5a .cta h2 em { font-style: normal; color: var(--gold); }
.w5a .cta p { color: var(--txt-2); font-size: 16px; margin: 0 0 40px; }
.w5a .cta-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }



/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .w5a section { padding: 72px 0; }
  .w5a .hero-inner { grid-template-columns: 1fr; gap: 50px; }
  .w5a .tilt img { max-height: 440px; }
  .w5a .hero-chip { display: none; }
  .w5a .databar-grid { grid-template-columns: repeat(3, 1fr); }
  .w5a .databar-item { border-bottom: 1px solid var(--line); }
  .w5a .apps-grid { grid-template-columns: 1fr; }
  .w5a .acq-grid { grid-template-columns: repeat(3, 1fr); gap: 32px 16px; }
  .w5a .modes-grid { grid-template-columns: repeat(3, 1fr); }
  .w5a .dqdv-grid { grid-template-columns: 1fr; }
  .w5a .energy-head { grid-template-columns: 1fr; gap: 30px; }
  .w5a .energy-badge { justify-self: start; }
  .w5a .bento { grid-template-columns: repeat(2, 1fr); }
  .w5a .safety-grid, .w5a .size-grid { grid-template-columns: 1fr; }
  .w5a .sf-badge { display: none; }
  .w5a .safety-visual { min-height: 480px; }
  .w5a .safety-visual img { max-height: 440px; }
  .w5a .sw-body { grid-template-columns: 1fr; }
  .w5a .sw-side, .w5a .sw-right { display: none; }
  .w5a .eco-top { grid-template-columns: 1fr; }
  .w5a .eco-link .line { width: 1.5px; height: 30px; }
  .w5a .eco-bottom { grid-template-columns: repeat(3, 1fr); }
  .w5a .specs-grid { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .w5a .container { padding: 0 18px; }
  .w5a section { padding: 56px 0; }
  .w5a .databar-grid { grid-template-columns: repeat(2, 1fr); }
  .w5a .acq-grid, .w5a .modes-grid { grid-template-columns: repeat(2, 1fr); gap: 28px 12px; }
  .w5a .range-tag { font-size: 11.5px; padding: 6px 10px; gap: 6px; }
  .w5a .range-tag .rng-curr { font-size: 10.5px; }
  .w5a .range-tag i { height: 14px; }
  .w5a .range-stage { height: 400px; }
  .w5a .range-device { height: 190px; }
  .w5a .rt1 { left: 1%; } .w5a .rt2 { left: 5%; top: 6%; }
  .w5a .rt3 { right: 5%; top: 6%; } .w5a .rt4 { right: 1%; }
  .w5a .range-center { top: 34%; }
  .w5a .bento { grid-template-columns: 1fr; }
  .w5a .bento-card.big { grid-column: span 1; }
  .w5a .eco-bottom { grid-template-columns: repeat(2, 1fr); }
  .w5a .hero-title { font-size: 40px; }
  .w5a .hero-stats-mini { gap: 22px; flex-wrap: wrap; }
  .w5a .size-visual img { height: 220px; }
  .w5a .safety-cards { grid-template-columns: 1fr; }
  .w5a .safety-visual { min-height: 400px; }
  .w5a .safety-visual img { max-height: 360px; }
}

/* ---------- 无障碍：减少动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .w5a *, .w5a *::before, .w5a *::after {
    animation-duration: .001s !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001s !important;
  }
  .w5a.js-on .rv, .w5a.js-on img.lazy { opacity: 1 !important; transform: none !important; filter: none !important; }
  .w5a .hero-title .line > span { transform: none; animation: none; }
  .w5a.js-on .range-lines path { stroke-dashoffset: 0 !important; }
}