/* ============ YEVITH · 数字生命 主题 ============ */
:root{
  --bg:#04060e;
  --bg2:#0a0f1f;
  --violet:#8b6cff;
  --indigo:#5b6bff;
  --cyan:#22d3ee;
  --teal:#2dd4bf;
  --text:#eaf0fb;
  --muted:#9bb0c9;
  --glass:rgba(255,255,255,.045);
  --glass2:rgba(255,255,255,.075);
  --line:rgba(255,255,255,.10);
  --grad:linear-gradient(120deg,#8b6cff 0%,#22d3ee 100%);
  --maxw:1140px;
  --radius:20px;
}
*{box-sizing:border-box;margin:0;padding:0}
/* 图片已声明 width/height 用于占位；此处统一兜底，避免撑破容器 */
img{max-width:100%;height:auto}
html{scroll-behavior:smooth}
body{
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei",Segoe UI,sans-serif;
  background:var(--bg);color:var(--text);line-height:1.8;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;position:relative;
}
/* 极光底 */
body::before{
  content:"";position:fixed;inset:-20%;z-index:0;pointer-events:none;
  background:
    radial-gradient(900px 600px at 78% 12%,rgba(139,108,255,.20),transparent 60%),
    radial-gradient(800px 600px at 12% 88%,rgba(34,211,238,.16),transparent 58%),
    radial-gradient(700px 500px at 50% 50%,rgba(91,107,255,.10),transparent 60%);
  filter:blur(10px);animation:aurora 26s ease-in-out infinite alternate;opacity:.9;
}
/* 颗粒质感 */
body::after{
  content:"";position:fixed;inset:0;z-index:1;pointer-events:none;opacity:.05;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
#field{position:fixed;inset:0;z-index:0;pointer-events:none;opacity:.55}
.veil{position:fixed;inset:0;z-index:1;pointer-events:none;
  background:radial-gradient(120% 90% at 50% 30%,transparent 35%,rgba(4,6,14,.55) 100%)}
.glow{position:fixed;width:420px;height:420px;left:0;top:0;z-index:2;pointer-events:none;
  transform:translate(-50%,-50%);border-radius:50%;opacity:0;transition:opacity .4s;
  background:radial-gradient(circle,rgba(139,108,255,.16),transparent 65%);mix-blend-mode:screen}
a{color:inherit;text-decoration:none}
h1,h2,h3{text-wrap:balance}
/* 键盘可见焦点：深色底上给足对比，不干扰鼠标用户 */
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{
  outline:2px solid var(--cyan);outline-offset:3px;border-radius:6px}
.card:focus-visible,.case:focus-visible,.price-card:focus-visible{outline-offset:5px}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px;position:relative;z-index:3}
.gtext{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
  background-size:200% auto;animation:shimmer 6s linear infinite}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  letter-spacing:.24em;color:var(--cyan);text-transform:uppercase}
.eyebrow::before{content:"";width:26px;height:1px;background:linear-gradient(90deg,var(--cyan),transparent)}
.idx{font-family:ui-monospace,monospace;font-size:13px;letter-spacing:.3em;color:rgba(139,108,255,.7)}
.btn{display:inline-flex;align-items:center;gap:8px;padding:13px 26px;border-radius:999px;
  font-weight:600;font-size:15px;cursor:pointer;transition:.25s;border:1px solid transparent}
.btn-primary{background:var(--grad);color:#06121f;box-shadow:0 10px 30px rgba(139,108,255,.35)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 42px rgba(139,108,255,.55)}
.btn-ghost{background:var(--glass);color:var(--text);border-color:var(--line);backdrop-filter:blur(8px)}
.btn-ghost:hover{border-color:var(--cyan);color:var(--cyan);background:var(--glass2)}

/* NAV */
header.nav{position:sticky;top:0;z-index:60;background:rgba(4,6,14,.55);
  backdrop-filter:saturate(180%) blur(16px);border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:66px}
.brand{display:flex;align-items:center;gap:11px;font-weight:800;font-size:18px;letter-spacing:.02em}
.brand .mark{width:32px;height:32px;border-radius:10px;background:var(--grad);position:relative;
  box-shadow:0 0 22px rgba(139,108,255,.55);display:grid;place-items:center;color:#06121f;font-size:16px;font-weight:900}
.brand .mark::after{content:"";position:absolute;inset:-4px;border-radius:13px;border:1px solid rgba(139,108,255,.4);animation:pulse 3s ease-in-out infinite}
.nav-links{display:flex;gap:30px;align-items:center}
.nav-links a{font-size:14.5px;color:var(--muted);font-weight:500;transition:.2s}
.nav-links a:hover{color:var(--text)}
.nav-cta{padding:9px 20px;font-size:14px}
.menu-btn{display:none;border:0;background:none;color:var(--text);font-size:24px;cursor:pointer}

/* HERO —— 左右双栏：左文案 / 右「数字生命状态」看板 */
.hero{position:relative;min-height:92vh;display:flex;align-items:center;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.06fr) minmax(0,.94fr);
  gap:48px;align-items:center;padding:100px 24px}
.hero-copy{min-width:0}
.hero-visual{position:relative;display:grid;place-items:center;min-height:430px}
.core{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:520px;height:520px;z-index:0;pointer-events:none}
.core-glow{position:absolute;inset:0;border-radius:50%;
  background:radial-gradient(circle,rgba(139,108,255,.40),rgba(34,211,238,.12) 42%,transparent 68%);
  filter:blur(22px);animation:breathe 7s ease-in-out infinite}
.core-ring{position:absolute;left:50%;top:50%;border:1px solid rgba(139,108,255,.35);border-radius:50%;
  transform:translate(-50%,-50%);animation:ring 6s ease-out infinite}
.core-ring.r1{width:46%;height:46%;animation-delay:0s}
.core-ring.r2{width:73%;height:73%;animation-delay:1.5s;border-color:rgba(34,211,238,.28)}
.core-ring.r3{width:100%;height:100%;animation-delay:3s;border-color:rgba(91,107,255,.22)}
.core-spin{position:absolute;left:50%;top:50%;width:58%;height:58%;transform:translate(-50%,-50%);
  border:1px dashed rgba(190,210,255,.30);border-radius:50%;animation:spin 40s linear infinite}
.core-spin::before{content:"";position:absolute;top:-4px;left:50%;width:8px;height:8px;border-radius:50%;
  background:var(--cyan);box-shadow:0 0 14px var(--cyan);transform:translateX(-50%)}
.hero .wrap{position:relative;z-index:3}
.hero h1{font-size:clamp(34px,4.4vw,56px);line-height:1.14;font-weight:800;letter-spacing:-.02em;margin-top:18px;text-wrap:normal}
.hero p.lead{margin-top:22px;font-size:16.5px;color:var(--muted);max-width:52ch}
.hero p.lead b{color:var(--text);font-weight:700}
.hero-actions{margin-top:34px;display:flex;gap:14px;flex-wrap:wrap}
.badges{margin-top:42px;display:flex;gap:10px;flex-wrap:wrap}
.badge{display:inline-flex;align-items:center;gap:9px;background:var(--glass);border:1px solid var(--line);
  backdrop-filter:blur(8px);color:#cdd9ee;padding:8px 15px;border-radius:999px;font-size:13px}
.badge .ic{width:7px;height:7px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px var(--cyan)}

/* HERO 状态看板 */
.hud{position:relative;z-index:2;width:100%;max-width:436px;border-radius:22px;padding:26px 26px 22px;
  background:linear-gradient(160deg,rgba(139,108,255,.14),rgba(34,211,238,.06)),rgba(8,12,24,.62);
  border:1px solid var(--line);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  box-shadow:0 30px 80px rgba(0,0,0,.55),0 0 0 1px rgba(139,108,255,.08) inset;animation:float 7s ease-in-out infinite}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-9px)}}
.hud-top{display:flex;align-items:center;gap:9px;font-size:12px;letter-spacing:.12em;
  color:var(--muted);text-transform:uppercase;font-weight:600}
.hud-live{width:7px;height:7px;border-radius:50%;background:#34e0a1;box-shadow:0 0 10px #34e0a1;
  animation:pulse 2.2s ease-in-out infinite;flex:none}
.hud-code{margin-left:auto;font-family:ui-monospace,monospace;font-size:11px;letter-spacing:.1em;
  color:rgba(139,108,255,.85);border:1px solid rgba(139,108,255,.3);padding:2px 8px;border-radius:6px}
.hud-grid{display:grid;grid-template-columns:1fr 1fr;gap:1px;margin:20px 0 18px;
  background:var(--line);border:1px solid var(--line);border-radius:14px;overflow:hidden}
.hud-cell{background:rgba(6,10,20,.72);padding:18px 16px}
.hud-cell b{display:block;font-size:30px;font-weight:900;line-height:1;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hud-cell span{display:block;margin-top:8px;font-size:12.5px;color:var(--muted);letter-spacing:.02em}
.hud-foot{font-size:12.5px;color:var(--muted);line-height:1.7;padding-left:15px;position:relative}
.hud-foot::before{content:"";position:absolute;left:0;top:7px;width:2px;height:calc(100% - 14px);
  border-radius:2px;background:var(--grad)}
.scrollhint{position:absolute;left:50%;bottom:26px;transform:translateX(-50%);z-index:3;font-size:12px;
  letter-spacing:.2em;color:var(--muted);display:flex;flex-direction:column;align-items:center;gap:8px}
.scrollhint span{width:1px;height:34px;background:linear-gradient(var(--cyan),transparent);animation:drop 2.4s ease-in-out infinite}

/* SECTION */
section{padding:88px 0;position:relative}
.sec-soft{} 
/* 780px：中文长标题（最长 18 字 × 42px ≈ 749px）单行放得下，不再把「部署」拆到两行 */
.sec-head{text-align:center;max-width:780px;margin:0 auto 60px;position:relative;z-index:3}
.sec-head h2{font-size:clamp(27px,3.6vw,42px);font-weight:800;letter-spacing:-.01em;margin-top:14px}
.sec-head p{margin-top:16px;color:var(--muted);font-size:16.5px}

.card{background:var(--glass);border:1px solid var(--line);border-radius:var(--radius);
  padding:34px;backdrop-filter:blur(12px);transition:.3s;position:relative;overflow:hidden}
.card::before{content:"";position:absolute;inset:0;border-radius:var(--radius);
  background:radial-gradient(400px 200px at 50% -20%,rgba(139,108,255,.14),transparent 60%);opacity:0;transition:.3s}
.card:hover{transform:translateY(-5px);border-color:rgba(139,108,255,.45);box-shadow:0 20px 50px rgba(0,0,0,.45)}
.card:hover::before{opacity:1}
.tag{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:700;
  color:var(--cyan);background:rgba(34,211,238,.1);border:1px solid rgba(34,211,238,.25);padding:6px 13px;border-radius:999px}
.card h3{margin:18px 0 10px;font-size:21px}
.card p{color:var(--muted);font-size:15px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}

/* CASES —— 统一 2 列网格；行业归属改为卡片角标，避免「1 个案例配 1 个行业标题」的碎节奏 */
.cases{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.case{background:var(--glass);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  backdrop-filter:blur(12px);display:flex;flex-direction:column;transition:.3s;position:relative}
.case::after{content:"";position:absolute;inset:0;border-radius:var(--radius);opacity:0;transition:.3s;
  background:radial-gradient(500px 240px at 80% 0%,rgba(34,211,238,.12),transparent 60%);pointer-events:none}
.case:hover{transform:translateY(-6px);border-color:rgba(34,211,238,.45);box-shadow:0 24px 60px rgba(0,0,0,.5)}
.case:hover::after{opacity:1}
.case .top{padding:24px 28px 20px;display:flex;align-items:center;gap:14px;position:relative;z-index:1}
.case .ico{width:40px;height:40px;flex:none;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(150deg,rgba(34,211,238,.16),rgba(139,108,255,.16));
  border:1px solid rgba(34,211,238,.22);color:var(--cyan);transition:.3s}
.case .ico svg{width:21px;height:21px;stroke:currentColor;fill:none;stroke-width:1.7;
  stroke-linecap:round;stroke-linejoin:round}
.case:hover .ico{border-color:rgba(34,211,238,.5);box-shadow:0 0 20px rgba(34,211,238,.25)}
.case .top-txt{min-width:0;flex:1}
.case .cat{display:block;font-size:11.5px;font-weight:700;letter-spacing:.14em;color:#a48eff;
  text-transform:uppercase;margin-bottom:5px}
.case .top h3{font-size:19.5px;line-height:1.35}
.pill{font-size:12px;font-weight:700;padding:5px 11px;border-radius:999px;flex:none;white-space:nowrap}
.pill.live{color:#34e0a1;background:rgba(52,224,161,.12);border:1px solid rgba(52,224,161,.3)}
.pill.dev{color:#ffce6b;background:rgba(255,206,107,.1);border:1px solid rgba(255,206,107,.3)}
.pill.soon{color:#9bb0c9;background:rgba(155,176,201,.1);border:1px solid rgba(155,176,201,.3)}
.case .body{padding:0 28px 24px;flex:1;position:relative;z-index:1}
.case .body p{color:var(--muted);font-size:15px}
.feat{margin-top:16px;display:flex;flex-wrap:wrap;gap:8px}
.chip{font-size:12.5px;color:#cdd9ee;background:var(--glass2);border:1px solid var(--line);padding:5px 11px;border-radius:9px}
.case .foot{padding:16px 28px;border-top:1px solid var(--line);display:flex;justify-content:space-between;
  align-items:center;gap:12px;position:relative;z-index:1}
.case .foot .label{font-size:13px;color:var(--muted)}
.case .foot .go{font-size:14px;font-weight:700;color:var(--cyan);flex:none}
/* 第 8 格：引导卡（虚线、无 emoji、指向咨询），补齐网格避免半行留白 */
.case-guide{display:flex;flex-direction:column;justify-content:center;gap:14px;padding:32px 30px;
  border:1px dashed rgba(139,108,255,.4);border-radius:var(--radius);
  background:linear-gradient(150deg,rgba(139,108,255,.09),rgba(34,211,238,.04))}
.case-guide h3{font-size:19px;font-weight:800;line-height:1.4}
.case-guide p{font-size:14.5px;color:var(--muted);line-height:1.75}
.case-guide .go{display:inline-flex;align-items:center;gap:7px;font-size:14.5px;font-weight:700;color:var(--cyan)}
.case-guide .go::after{content:"→";transition:.25s}
.case-guide:hover .go::after{transform:translateX(4px)}
/* 案例折叠出口：平板/手机只展示前 4 个案例，其余由此承接（桌面端隐藏） */
.cases-more{display:none;flex-direction:column;align-items:center;gap:10px;margin-top:28px;text-align:center}
.cases-more p{font-size:14px;color:var(--muted);margin:0}
.cases-more .btn{width:100%;justify-content:center}

/* CASE DETAIL */
.case-hero{position:relative;padding:120px 0 70px;overflow:hidden}
.case-hero .wrap{position:relative;z-index:3}
.case-hero h1{font-size:clamp(34px,5.4vw,60px);font-weight:800;letter-spacing:-.01em;margin-top:16px}
.case-hero .lede{margin-top:20px;font-size:clamp(16px,2vw,19px);color:var(--muted);max-width:62ch}
.detail-grid{display:grid;grid-template-columns:1fr 320px;gap:36px;margin-top:10px;align-items:start}
.detail{background:var(--glass);border:1px solid var(--line);border-radius:var(--radius);padding:32px;backdrop-filter:blur(12px)}
.detail h3{font-size:20px;margin-bottom:14px;display:flex;align-items:center;gap:10px}
.detail h3 .dot{width:9px;height:9px;border-radius:50%;background:var(--grad);box-shadow:0 0 12px var(--violet)}
.detail p{color:var(--muted);font-size:15.5px}
.detail ul{list-style:none;margin-top:14px;display:flex;flex-direction:column;gap:11px}
.detail li{color:var(--text);font-size:15px;display:flex;gap:11px;align-items:flex-start}
.detail li .ck{color:var(--cyan);font-weight:800;flex:none}

/* 详情页：主内容 + 侧栏 */
.detail-main{min-width:0}
.detail-side{display:flex;flex-direction:column;gap:18px}
.side-card{background:var(--glass);border:1px solid var(--line);border-radius:var(--radius);padding:24px;backdrop-filter:blur(12px)}
.side-card h4{font-size:15px;margin-bottom:12px;color:var(--text)}
.side-card p{color:var(--muted);font-size:14px;line-height:1.7}
.side-card .feat{margin-top:4px}

/* 详情区块 */
.block{margin-bottom:44px}
.block h2{font-size:clamp(22px,3vw,28px);font-weight:800;margin:8px 0 18px}

/* 业务需求 callout（详情页） */
.callout{background:linear-gradient(135deg,rgba(139,108,255,.14),rgba(34,211,238,.06));
  border:1px solid var(--line);border-left:3px solid var(--violet);border-radius:16px;padding:24px 28px;margin-bottom:22px}
.callout p{color:var(--text);font-size:16px;line-height:1.75}
.pains{list-style:none;display:flex;flex-direction:column;gap:13px;margin:0;padding:0}
.pains li, .pain{color:var(--text);font-size:15.5px;line-height:1.6;padding-left:24px;position:relative}
.pains li::before, .pain::before{content:"";position:absolute;left:2px;top:9px;width:8px;height:8px;border-radius:50%;background:var(--grad);box-shadow:0 0 10px var(--violet)}
.pains li b, .pain b, .pain h4{color:var(--cyan)}
.pain h4{font-size:16px;font-weight:800;margin-bottom:6px}
.pain p{font-size:15px;color:var(--muted);line-height:1.65}

/* 流程图（详情页 fn/fe/feb/fl 类） */
.flow-wrap{background:var(--glass);border:1px solid var(--line);border-radius:var(--radius);padding:24px;backdrop-filter:blur(12px);overflow:hidden}
.flow .fn rect{fill:rgba(139,108,255,.12);stroke:rgba(139,108,255,.5);stroke-width:1.5}
.flow .fn text{fill:var(--text);font-size:14px;font-weight:600;text-anchor:middle;font-family:inherit}
.flow .fn text:nth-of-type(2){fill:var(--muted);font-size:11.5px;font-weight:500}
.flow .fe{stroke:rgba(110,168,255,.75);stroke-width:2;fill:none;marker-end:url(#ar)}
.flow .feb{stroke:rgba(255,180,84,.75);stroke-width:2;fill:none;stroke-dasharray:7 6}
.flow .fl{fill:rgba(255,180,84,.9);font-size:13px;font-weight:600;text-anchor:middle;font-family:inherit}
.cap{color:var(--muted);font-size:14.5px;line-height:1.7;margin-top:14px}

/* 用户评价（详情页） */
.testimonials{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin-top:6px}
.tcard{background:var(--glass);border:1px solid var(--line);border-radius:var(--radius);padding:28px;backdrop-filter:blur(12px);transition:.3s}
.tcard:hover{border-color:rgba(34,211,238,.4);transform:translateY(-4px)}
.tavatar{width:46px;height:46px;border-radius:50%;background:var(--grad);display:grid;place-items:center;color:#06121f;font-weight:800;font-size:17px;margin-bottom:16px}
.tquote{font-size:16px;color:var(--text);line-height:1.75;border-left:3px solid var(--grad);padding-left:16px;margin-bottom:18px}
.tmeta{display:flex;flex-direction:column;gap:2px}
.tmeta b{font-size:15px;color:var(--text)}
.tmeta span{font-size:13px;color:var(--muted)}
.tnote{margin-top:14px;font-size:13px;color:var(--muted);background:rgba(255,255,255,.03);border:1px dashed var(--line);border-radius:12px;padding:10px 14px;line-height:1.6}
.backrow{margin-top:46px;display:flex;align-items:center;gap:14px;flex-wrap:wrap}

/* pricing */
/* 3 张卡用 auto-fit：卡片数量变化时自动填满，不再留下空列 */
.pricing-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:20px;margin-top:0}
.price-card{background:var(--glass);border:1px solid var(--line);border-radius:var(--radius);padding:28px 24px;display:flex;flex-direction:column;backdrop-filter:blur(12px);transition:.3s;position:relative}
.price-card:hover{transform:translateY(-5px);border-color:rgba(34,211,238,.35)}
.price-card.featured{border-color:var(--cyan);background:linear-gradient(160deg,rgba(34,211,238,.08),rgba(139,108,255,.08))}
.price-tag{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:700;color:var(--cyan);background:rgba(34,211,238,.10);border:1px solid rgba(34,211,238,.25);padding:5px 10px;border-radius:99px;margin-bottom:14px;align-self:flex-start}
.price-name{font-size:18px;font-weight:800;margin-bottom:6px}
.price-amount{font-size:38px;font-weight:900;line-height:1;margin:12px 0 6px;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.price-period{font-size:14px;color:var(--muted);margin-bottom:14px}
.price-desc{font-size:14px;color:var(--muted);line-height:1.6;margin-bottom:18px;min-height:44px}
.price-features{list-style:none;display:flex;flex-direction:column;gap:10px;margin-bottom:22px;flex:1}
.price-features li{font-size:14px;color:var(--text);display:flex;align-items:flex-start;gap:9px}
.price-features li::before{content:"✓";color:var(--cyan);font-weight:800;flex:none}
.price-btn{display:flex;justify-content:center;width:100%;padding:13px 18px;border-radius:12px;font-size:15px;font-weight:700;text-decoration:none;border:1px solid var(--line);color:var(--text);background:rgba(255,255,255,.04);transition:.25s}
.price-btn:hover{background:var(--grad);color:#06121f;border-color:transparent}
.price-card.featured .price-btn{background:var(--grad);color:#06121f;border-color:transparent}
.price-card.featured .price-btn:hover{box-shadow:0 0 24px rgba(34,211,238,.35)}
.pricing-cta{margin-top:34px;text-align:center;color:var(--muted);font-size:15px}
.pricing-cta a{color:var(--cyan);text-decoration:none}

/* subscribe */
.sub-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:28px;align-items:stretch}
.sub-card{background:var(--glass);border:1px solid var(--line);border-radius:var(--radius);padding:36px;backdrop-filter:blur(12px);
  display:flex;flex-direction:column;justify-content:center}
.sub-card>p:last-child{margin-bottom:0}
.sub-card h3{font-size:23px;margin-bottom:8px}
.sub-card p{color:var(--muted);font-size:15px;margin-bottom:22px}
.field{display:flex;gap:10px;margin-bottom:12px}
.field input{flex:1;padding:14px 16px;border:1px solid var(--line);border-radius:12px;font-size:15px;
  background:rgba(255,255,255,.04);color:var(--text);outline:none}
.field input::placeholder{color:#6f829a}
.field input:focus{border-color:var(--cyan);box-shadow:0 0 0 3px rgba(34,211,238,.15)}
.sub-card .hint{font-size:13px;color:var(--muted);margin-top:14px}
.qr-card{background:linear-gradient(160deg,rgba(139,108,255,.18),rgba(34,211,238,.10));
  border:1px solid var(--line);border-radius:var(--radius);padding:36px;display:flex;flex-direction:column;
  align-items:center;justify-content:center;text-align:center;backdrop-filter:blur(12px)}
.qr-box{width:168px;height:168px;border-radius:16px;background:#fff;display:grid;place-items:center;margin:8px 0 18px;
  box-shadow:0 0 40px rgba(34,211,238,.3)}
.qr-box svg{width:146px;height:146px}
.qr-card h3{font-size:20px;margin-bottom:6px}
.qr-card p{font-size:14px;color:var(--muted)}
/* 联系区：微信 + 公众号 两码并排 */
.qr-row{display:flex;gap:18px;justify-content:center;flex-wrap:wrap;margin:16px 0 2px}
.qr-item{display:flex;flex-direction:column;align-items:center;gap:9px}
.qr-item .qr-box{width:150px;height:150px;margin:0}
.qr-item h4{font-size:13.5px;font-weight:700;color:var(--text);line-height:1.45;text-align:center;max-width:152px}

/* CTA */
.cta{background:radial-gradient(600px 300px at 50% 0%,rgba(139,108,255,.22),transparent 60%),rgba(10,15,31,.6);
  border:1px solid var(--line);border-radius:26px;padding:60px 40px;text-align:center;backdrop-filter:blur(10px);box-shadow:0 30px 70px rgba(0,0,0,.45)}
.cta h2{font-size:clamp(25px,3vw,34px);font-weight:800}
.cta p{margin:16px auto 30px;color:var(--muted);max-width:56ch;font-size:16px}
.cta-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

footer{background:rgba(4,6,14,.7);border-top:1px solid var(--line);padding:52px 0 32px;font-size:14px;color:var(--muted);position:relative;z-index:3}
.foot-grid{display:flex;justify-content:space-between;gap:30px;flex-wrap:wrap}
.foot-grid .brand{color:var(--text);margin-bottom:12px}
.foot-grid p{max-width:34ch}
.foot-col h4{color:var(--text);font-size:15px;margin-bottom:14px}
.foot-col a{display:block;color:var(--muted);margin-bottom:9px;font-size:14px;transition:.2s}
.foot-col a:hover{color:var(--cyan)}
.foot-cases{min-width:260px}
.foot-case-table{display:grid;grid-template-columns:max-content 1fr;column-gap:22px;row-gap:11px;align-items:start}
.foot-ind{font-size:11px;color:#a48eff;text-transform:uppercase;letter-spacing:.07em;font-weight:700;white-space:nowrap;padding-top:2px}
.foot-items{display:flex;flex-direction:column;gap:6px}
.foot-items a{font-size:13px;color:#9aa9c2;transition:.2s}
.foot-items a:hover{color:var(--cyan)}
@media(max-width:640px){
  .foot-cases{min-width:100%;width:100%}
  .foot-case-table{column-gap:14px}
}
.copyright{margin-top:36px;padding-top:22px;border-top:1px solid var(--line);font-size:13px;text-align:center;color:#5f7088}

.reveal{opacity:0;transform:translateY(26px);transition:.8s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}
.rise{opacity:0;transform:translateY(30px);animation:rise .9s cubic-bezier(.2,.7,.2,1) forwards}

@keyframes breathe{0%,100%{transform:scale(1);opacity:.8}50%{transform:scale(1.14);opacity:1}}
@keyframes pulse{0%,100%{opacity:.6;transform:scale(1)}50%{opacity:1;transform:scale(1.08)}}
@keyframes ring{0%{transform:translate(-50%,-50%) scale(.2);opacity:0}35%{opacity:.55}100%{transform:translate(-50%,-50%) scale(1.2);opacity:0}}
@keyframes spin{to{transform:translate(-50%,-50%) rotate(360deg)}}
@keyframes aurora{0%{transform:translate(0,0) scale(1)}50%{transform:translate(-3%,2%) scale(1.08)}100%{transform:translate(2%,-2%) scale(1.04)}}
@keyframes shimmer{to{background-position:200% center}}
@keyframes rise{to{opacity:1;transform:none}}
@keyframes drop{0%,100%{opacity:.3;transform:scaleY(.6)}50%{opacity:1;transform:scaleY(1)}}

/* 业务需求 callout */
.req{background:linear-gradient(135deg,rgba(139,108,255,.14),rgba(34,211,238,.06));
  border:1px solid var(--line);border-left:3px solid var(--violet);border-radius:16px;padding:28px 30px;margin:6px 0}
.req h3{font-size:19px;margin-bottom:10px;display:flex;align-items:center;gap:10px}
.req h3 .dot{width:9px;height:9px;border-radius:50%;background:var(--grad);box-shadow:0 0 12px var(--violet)}
.req p{color:var(--text);font-size:15.5px}

/* 业务流程图 */
.flow{margin:30px 0 10px;display:flex;justify-content:center}
.flow svg{width:100%;max-width:780px;height:auto;overflow:visible}
.flow .node{fill:rgba(139,108,255,.10);stroke:rgba(139,108,255,.45);stroke-width:1.5}
.flow .node.cyan{fill:rgba(34,211,238,.10);stroke:rgba(34,211,238,.5)}
.flow .node.teal{fill:rgba(45,212,191,.10);stroke:rgba(45,212,191,.5)}
.flow .nlabel{fill:var(--text);font-size:16.5px;font-weight:600}
.flow .nsub{fill:var(--muted);font-size:12.5px}
.flow .edge{stroke:rgba(155,176,201,.55);stroke-width:2;fill:none}
.flow .edge.dash{stroke-dasharray:7 6;stroke:rgba(45,212,191,.8)}
.flow .arrow{fill:rgba(155,176,201,.85)}
.flow .loopLabel{fill:var(--teal);font-size:13px;font-weight:700}

/* 交付要点（详情页）—— 客观事实卡，替代无法核验的「客户评价」人设 */
.takeaways{display:grid;grid-template-columns:repeat(auto-fit,minmax(262px,1fr));gap:22px;margin-top:6px}
.takeaway{background:var(--glass);border:1px solid var(--line);border-radius:var(--radius);padding:28px;
  backdrop-filter:blur(12px);transition:.3s;position:relative;overflow:hidden}
.takeaway:hover{border-color:rgba(34,211,238,.4);transform:translateY(-4px)}
.takeaway .tk{display:flex;align-items:center;gap:11px;margin-bottom:15px}
.takeaway .tk b{font-family:ui-monospace,monospace;font-size:12px;font-weight:800;letter-spacing:.1em;
  color:var(--cyan);background:rgba(34,211,238,.1);border:1px solid rgba(34,211,238,.25);
  padding:4px 9px;border-radius:7px;flex:none}
.takeaway .tk .bar{flex:1;height:1px;background:linear-gradient(90deg,rgba(34,211,238,.45),transparent)}
.takeaway h3{font-size:17.5px;font-weight:800;margin-bottom:10px;line-height:1.5}
.takeaway p{font-size:15px;color:var(--muted);line-height:1.75}
.takeaway .src{display:block;margin-top:15px;padding-top:13px;border-top:1px dashed var(--line);
  font-size:12.5px;color:#7f92ab;letter-spacing:.02em}

/* 用户评价 */
.reviews{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin-top:6px}
.review{background:var(--glass);border:1px solid var(--line);border-radius:var(--radius);padding:30px;backdrop-filter:blur(12px);position:relative;transition:.3s}
.review:hover{border-color:rgba(34,211,238,.4);transform:translateY(-4px)}
.review .q{font-size:16px;color:var(--text);line-height:1.7;border-left:3px solid var(--grad);padding-left:16px;margin-bottom:18px}
.review .who{display:flex;align-items:center;gap:12px}
.review .ava{width:42px;height:42px;border-radius:50%;background:var(--grad);display:grid;place-items:center;color:#06121f;font-weight:800;font-size:16px;flex:none}
.review .who b{font-size:15px;display:block}
.review .who span{font-size:13px;color:var(--muted)}
.review .meta{margin-top:14px;font-size:13.5px;color:var(--muted);background:rgba(255,255,255,.03);border:1px dashed var(--line);border-radius:12px;padding:10px 14px}
.hint-note{margin-top:26px;font-size:14.5px;line-height:1.8;color:var(--muted);text-align:center}
.hint-note b{color:var(--cyan)}

/* 关键操作截图 · 画廊 */
.figure{margin:24px 0}
.figure img{width:100%;display:block;border:1px solid var(--line);border-radius:16px;box-shadow:0 18px 50px rgba(0,0,0,.45)}
.figure figcaption{margin-top:12px;font-size:14px;color:var(--muted);line-height:1.65;text-align:center}
.shots{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:8px}
.shot{background:var(--glass);border:1px solid var(--line);border-radius:16px;overflow:hidden;backdrop-filter:blur(10px);transition:.3s}
.shot:hover{border-color:rgba(34,211,238,.45);transform:translateY(-4px)}
.shot img{width:100%;display:block;border-bottom:1px solid var(--line)}
.shot figcaption{padding:13px 15px;font-size:13.5px;color:var(--muted);line-height:1.6}
.shot .tag{margin:0 15px 13px}

/* ==================================================================
   终端类型自适应 —— 按设备调整展示比例
   <html data-device="mobile|tablet|desktop" data-pointer="coarse|fine" data-orient="...">
   由 <head> 内联脚本写入。媒体查询为无 JS 兜底；data-* 用于媒体查询
   区分不了的场景（窄窗口桌面 vs 真手机、触屏 vs 鼠标、横竖屏）。
   三档：desktop ≥1025px ／ tablet 641–1024px ／ mobile ≤640px
   ================================================================== */

/* 触屏：取消 hover 位移，避免点按后卡片「粘住」不还原 */
html[data-pointer="coarse"] .case:hover,
html[data-pointer="coarse"] .card:hover,
html[data-pointer="coarse"] .price-card:hover,
html[data-pointer="coarse"] .takeaway:hover,
html[data-pointer="coarse"] .shot:hover,
html[data-pointer="coarse"] .review:hover,
html[data-pointer="coarse"] .tcard:hover{transform:none}
html[data-pointer="coarse"] .case:hover::after,
html[data-pointer="coarse"] .card:hover::before{opacity:0}
/* 触屏给按下反馈，替代 hover */
html[data-pointer="coarse"] .btn:active,
html[data-pointer="coarse"] .case:active,
html[data-pointer="coarse"] .price-card:active{transform:scale(.985)}

/* 手机：首屏用动态视口单位，避开 iOS 地址栏收起导致的首屏被截断 */
html[data-device="mobile"] .hero{min-height:min(86vh,86svh)}
/* 手机横屏：首屏不占满高度，避免内容被压扁 */
html[data-device="mobile"][data-orient="landscape"] .hero{min-height:0}

/* ================= 平板档 641–1024px：单列 + 收紧一档 ================= */
@media(max-width:1024px){
  /* 首屏：双栏收为单栏，状态看板顺排在文案下方，核心光环退为背景 */
  .hero{min-height:0}
  .hero-grid{grid-template-columns:1fr;gap:36px;padding:80px 24px 88px}
  .hero-visual{position:static;display:block;min-height:0}
  .hero-visual .core{position:absolute;left:50%;top:38%;width:min(400px,88vw);height:min(400px,88vw);opacity:.5}
  .hud{max-width:100%}
  /* 列数降级：三列/两列 全部收为单列，交付要点保留两列 */
  .grid-3,.sub-grid,.detail-grid,.reviews,.testimonials,.pricing-grid,.cases{grid-template-columns:1fr}
  .takeaways{grid-template-columns:1fr 1fr}
  /* 导航折叠为汉堡菜单 */
  .nav-links{display:none}
  .menu-btn{display:block}
  .nav-links.open{display:flex;position:absolute;top:66px;left:0;right:0;background:rgba(4,6,14,.96);
    flex-direction:column;padding:20px 24px;gap:18px;border-bottom:1px solid var(--line)}
  .core{width:340px;height:340px}
  .price-card.featured{transform:none}
  .price-card.featured:hover{transform:translateY(-5px)}
  /* 首页案例区按终端折叠：平板/手机只展示前 4 个，其余交由「查看全部案例」承接。
     仅作用于首页 .cases--fold，cases.html（查看全部）不受影响。 */
  .cases--fold>.case:nth-child(n+5),.cases--fold>.case-guide{display:none}
  .cases-more{display:flex}
  section{padding:76px 0}
}

/* ================= 手机档 ≤640px：紧凑比例 + 更小字号阶梯 ================= */
@media(max-width:640px){
  section{padding:54px 0}
  .wrap{padding:0 18px}
  .hero-grid{padding:62px 18px 74px;gap:28px}
  /* 小屏让「一个会生长的数字生命」整行放下，避免「生命」被拆成孤行 */
  .hero h1{font-size:clamp(28px,8.1vw,36px);line-height:1.18}
  .hero p.lead{font-size:15.5px;margin-top:16px}
  .hero-actions{margin-top:24px}
  .hero-actions .btn{flex:1 1 auto;justify-content:center}
  .badges{margin-top:28px;gap:8px}
  .badge{font-size:12.5px;padding:7px 13px}
  /* HUD 收紧为一屏内可读完的比例 */
  .hud{padding:20px 18px 16px;border-radius:18px}
  .hud-grid{margin:15px 0 14px}
  .hud-cell{padding:13px 12px}
  .hud-cell b{font-size:25px}
  .hud-cell span{font-size:11.5px;margin-top:6px}
  .hud-foot{font-size:12px}
  .scrollhint{display:none}
  .sec-head{margin-bottom:32px}
  .sec-head p{font-size:15.5px}
  /* 卡片比例：内边距与字号整体收紧一档 */
  .case .top{padding:17px 18px 14px}
  .case .body{padding:0 18px 17px}
  .case .foot{padding:13px 18px}
  .case .top h3{font-size:18px}
  .case .ico{width:36px;height:36px;border-radius:10px}
  .case .ico svg{width:19px;height:19px}
  .case .body p{font-size:14.5px}
  .case-guide{padding:22px 18px}
  .case-guide h3{font-size:17.5px}
  .card{padding:26px 22px}
  .takeaways,.shots,.grid-3{grid-template-columns:1fr}
  .takeaway{padding:22px 20px}
  .takeaway h3{font-size:16.5px}
  .takeaway p{font-size:14.5px}
  .price-card{padding:24px 20px}
  .price-amount{font-size:32px}
  .price-desc{min-height:0}
  .cta{padding:38px 22px;border-radius:20px}
  /* 页脚：窄屏改两列网格，导航与联系并排，案例表跨列，省掉约一屏空白 */
  .foot-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px 18px}
  .foot-grid>div:first-child{grid-column:1/-1}
  .foot-cases{grid-column:1/-1}
  .foot-grid .foot-col:not(.foot-cases):last-child{align-self:start}
  .foot-col a{margin-bottom:7px}
  /* 标签组：2×2 排列，比单行长串更整齐也更省竖向空间 */
  .badges{display:grid;grid-template-columns:1fr 1fr;gap:8px}
  .badge{justify-content:flex-start}
  /* 定价卡：收紧特征行间距 */
  .price-features{gap:8px;margin-bottom:18px}
  .price-desc{margin-bottom:14px}
  .price-period{margin-bottom:12px}
  /* 详情页：区块与配图比例收紧 */
  .case-hero{padding:90px 0 44px}
  .case-hero h1{font-size:clamp(30px,8.5vw,42px)}
  .detail{padding:24px 20px}
  .block{margin-bottom:32px}
  .block h2{font-size:21px}
  .figure{margin:16px 0}
  .cap{font-size:14px}
  .hint-note{font-size:14px;margin-top:18px}
  .callout,.req{padding:20px 18px}
  /* 联系区两码：收窄内边距，让微信与公众号并排放下 */
  .sub-card,.qr-card{padding:26px 20px}
  .qr-row{gap:16px;margin-top:14px}
  .qr-item .qr-box{width:128px;height:128px}
  .qr-item h4{font-size:12.5px;max-width:132px}
}

@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal,.rise{opacity:1;transform:none}
  #field,.veil,.glow{display:none}
}

/* ================= 大屏桌面档 ≥1600px：放宽容器，避免板书式留白 =================
   标题字号不跟着放大：中文标题每行字数固定，字号一大就会拆出孤字。 */
@media(min-width:1600px){
  :root{--maxw:1260px}
  .hero h1{font-size:clamp(44px,3vw,60px)}
  .cta h2{font-size:clamp(28px,2vw,38px)}
  .cases{gap:28px}
  .grid-3{gap:26px}
  .hud{max-width:470px}
}
/* 超宽屏（≥2200px）：不再无限拉宽，靠增加留白而非拉伸内容 */
@media(min-width:2200px){
  :root{--maxw:1340px}
  section{padding:104px 0}
}

/* ===== 截图灯箱：小屏看不清 UI 细节时点开看全图（桌面同样可用）===== */
.figure img,.shot img,.qr-box img{cursor:zoom-in}
.lightbox{position:fixed;inset:0;z-index:200;background:rgba(2,4,10,.95);
  -webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
  display:none;overflow:auto;padding:44px 16px;cursor:zoom-out;-webkit-overflow-scrolling:touch}
.lightbox.open{display:block}
.lightbox img{margin:0 auto;display:block;border-radius:10px;box-shadow:0 30px 80px rgba(0,0,0,.7);
  border:1px solid var(--line)}
.lb-close{position:fixed;top:14px;right:14px;z-index:201;width:40px;height:40px;border-radius:50%;
  border:1px solid var(--line);background:rgba(10,15,31,.9);color:var(--text);font-size:22px;
  line-height:1;cursor:pointer;display:grid;place-items:center}
.lb-close:hover{border-color:var(--cyan);color:var(--cyan)}
.lb-cap{position:fixed;left:0;right:0;bottom:0;z-index:201;padding:12px 20px;text-align:center;
  font-size:13px;color:var(--muted);background:linear-gradient(transparent,rgba(2,4,10,.92) 40%)}
/* 手机：放大到可读尺寸并允许拖看，弥补小屏下截图细节不可辨。
   放大倍数按截图比例分档：宽图（UI 长截图）放得最多，竖图放得最少。 */
html[data-device="mobile"] .lightbox{padding:52px 0 60px}
html[data-device="mobile"] .lightbox img{width:175%;max-width:none;border-radius:0;border:0}
html[data-device="mobile"] .lightbox img.wide{width:205%}
html[data-device="mobile"] .lightbox img.portrait{width:150%}
/* 二维码：灯箱里完整显示（放大到超出屏幕反而扫不出），移动端两侧留边便于长按识别 */
.lightbox img.qr{background:#fff;border-radius:12px;max-width:min(600px,92vw)}
html[data-device="mobile"] .lightbox img.qr{width:calc(100% - 44px);max-width:100%;border-radius:12px;border:0}
/* 灯箱打开时锁住页面滚动 */
body.lb-open{overflow:hidden}

/* ===== 案例导航分组面板 ===== */
.nav-group{position:relative}
.nav-group-toggle{background:none;border:0;color:var(--muted);font-size:14.5px;font-weight:500;font-family:inherit;cursor:pointer;display:inline-flex;align-items:center;gap:5px;padding:0}
.nav-group-toggle:hover{color:var(--text)}
.caret{font-size:10px;transition:.2s}
.nav-panel{display:none;position:absolute;top:100%;left:50%;transform:translateX(-50%);padding-top:12px;z-index:1000}
.nav-panel::before{content:"";position:absolute;top:0;left:0;right:0;height:12px;transform:translateY(-100%)}
.nav-panel-inner{background:rgba(8,12,24,.95);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border:1px solid var(--line);border-radius:16px;padding:22px 26px;display:grid;grid-template-columns:repeat(5,minmax(120px,1fr));gap:26px;box-shadow:0 24px 60px rgba(0,0,0,.45)}
.nav-col h4{font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.08em;margin:0 0 12px;font-weight:600}
.nav-col a{display:block;color:var(--text);font-size:14px;padding:7px 0;text-decoration:none;opacity:.9;transition:.2s;white-space:nowrap}
.nav-col a:hover{opacity:1;color:#a48eff}
.nav-group:hover .nav-panel,.nav-group.open .nav-panel{display:block}
.nav-group:hover .caret,.nav-group.open .caret{transform:rotate(180deg)}

@media(max-width:1024px){
  .nav-panel{position:static;transform:none;padding-top:8px;display:none!important}
  .nav-panel::before{display:none}
  .nav-panel-inner{grid-template-columns:1fr 1fr;gap:16px;padding:16px;border-radius:12px;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.08);box-shadow:none}
  .nav-col h4{font-size:12px;margin-bottom:8px}
  .nav-col a{font-size:13px;padding:5px 0;color:var(--muted)}
  .nav-col a:hover{color:var(--text)}
  .nav-group.open .nav-panel{display:block!important}
}