@charset "UTF-8";
/* =============================================================
   苏州飞之云科技有限公司 · 官网静态样式  v2（视觉增强）
   流派：主「暗黑科技」+ 辅「国际风格」
   12 栅格 / 容器 1200 / 8pt 间距 / 单一强调色
   v2 新增：工程图纸网格、毛玻璃导航、HUD 角标、线性图标、
            卡片悬停反馈、CTA 几何光带、页脚渐变线与回顶
   ============================================================= */

:root{
  --bg:#0B1116;
  --surface:#141C24;
  --surface-2:#1B2731;
  --surface-hover:#18242E;
  --accent:#4CC9D8;
  --accent-hover:#6AD7E3;
  --text:#F2F6F8;
  --muted:#9AAAB6;
  --line:#24313C;
  --line-strong:#38505F;
  --accent-faint:rgba(76,201,216,.10);

  --font-cn:"Noto Sans SC","Source Han Sans SC","Noto Sans CJK SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-en:"Outfit",Inter,"Helvetica Neue",Arial,sans-serif;
  --font-mono:"Geist Mono","JetBrains Mono",ui-monospace,"Cascadia Mono",Consolas,monospace;

  --radius:2px;
  --container:1200px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  color:var(--text);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  /* 工程图纸：固定网格 + 右上角一道极淡冷光 */
  background-color:var(--bg);
  background-image:
    radial-gradient(900px 520px at 82% -6%, rgba(76,201,216,.11), transparent 72%),
    linear-gradient(to right, rgba(76,201,216,.030) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(76,201,216,.030) 1px, transparent 1px);
  background-size:auto,100px 100px,100px 100px;
  background-attachment:fixed,fixed,fixed;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4,p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
::selection{background:var(--accent);color:var(--bg)}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px}

/* ---------- 布局 ---------- */
.container{width:100%;max-width:var(--container);margin:0 auto}
.section{padding:120px 0}
.section--tight{padding:96px 0}
.section--surface{background:var(--surface)}
.section--surface-2{background:var(--surface-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.page-head{padding:96px 0;position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
.page-head::after{
  content:"";position:absolute;right:-90px;top:-150px;width:430px;height:430px;
  border:1px solid rgba(76,201,216,.13);border-radius:50%;
  box-shadow:0 0 0 80px rgba(76,201,216,.025),0 0 0 160px rgba(76,201,216,.018);
  pointer-events:none;
}
.page-head > .container{position:relative;z-index:1}
.section-head{max-width:820px;margin-bottom:48px}
.section-head p{margin-top:16px;color:var(--muted);font-size:16px;line-height:1.75}
.section-head h2,.section-head h3{margin-top:16px}

.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.grid-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}

/* ---------- 排版 ---------- */
.h1{font-size:64px;line-height:1.25;font-weight:700;letter-spacing:-.025em}
.h2{font-size:48px;line-height:1.25;font-weight:700;letter-spacing:-.018em}
.h3{font-size:32px;line-height:1.375;font-weight:700;letter-spacing:-.01em}
.h4{font-size:24px;line-height:1.4;font-weight:600}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-family:var(--font-en);font-size:12px;font-weight:500;letter-spacing:.14em;color:var(--accent)}
.eyebrow::before{content:"";display:block;width:20px;height:1px;background:var(--accent);flex-shrink:0}
.eyebrow--dark{color:var(--bg)}
.eyebrow--dark::before{background:var(--bg)}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums}
.accent{color:var(--accent)}
.muted{color:var(--muted)}
.body-lg{font-size:16px;line-height:1.85;color:var(--muted)}
.body-sm{font-size:14px;line-height:1.85;color:var(--muted)}
.note{font-size:12px;line-height:1.85;color:var(--muted)}
.section-head .eyebrow{display:inline-flex}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;height:48px;padding:0 32px;border:1px solid transparent;border-radius:var(--radius);font-size:16px;font-weight:600;line-height:1;cursor:pointer;transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .2s ease}
.btn:hover{transform:translateY(-2px)}
.btn--primary{background:var(--accent);color:var(--bg)}
.btn--primary:hover{background:var(--accent-hover)}
.btn--outline{background:transparent;border-color:var(--accent);color:var(--accent)}
.btn--outline:hover{background:rgba(76,201,216,.10)}
.btn--dark{background:var(--bg);color:var(--accent)}
.btn--dark:hover{background:#10202A}
.btn--sm{height:40px;padding:0 24px;font-size:14px}
.btn--block{width:100%}
.btn-row{display:flex;flex-wrap:wrap;gap:16px}
.btn--arrow::after{content:"→";margin-left:12px;font-size:18px;line-height:1;transition:transform .2s ease}
.btn--arrow:hover::after{transform:translateX(5px)}
/* 文章正文内的按钮：避免被 .article__body a 的冰青文字色与下划线覆盖 */
.article__body a.btn{border-bottom:none}
.article__body a.btn--primary{color:var(--bg)}
.article__body a.btn--outline{color:var(--accent)}
.article__body a.btn--dark{color:var(--accent)}

/* ---------- 导航 ---------- */
.skip-link{position:absolute;left:-9999px;top:0;z-index:100;background:var(--accent);color:var(--bg);padding:12px 20px;font-size:14px}
.skip-link:focus{left:16px;top:16px}
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(11,17,22,.80);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  backdrop-filter:blur(16px) saturate(140%);
  border-bottom:1px solid var(--line);
  transition:background-color .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{background:rgba(11,17,22,.94);border-bottom-color:rgba(76,201,216,.34)}
.nav{height:80px;display:flex;align-items:center;justify-content:space-between;gap:32px}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand__mark{width:24px;height:24px;flex-shrink:0}
.brand__cn{font-size:20px;font-weight:600;letter-spacing:.02em;white-space:nowrap}
.brand__en{font-family:var(--font-en);font-size:10px;font-weight:500;letter-spacing:.16em;color:var(--muted);white-space:nowrap;padding-left:12px;border-left:1px solid var(--line)}
.nav__links{display:flex;align-items:center;gap:32px;margin-left:auto}
.nav__links a{position:relative;font-size:14px;color:var(--muted);padding:8px 0;transition:color .2s ease;white-space:nowrap}
.nav__links a:hover{color:var(--text)}
.nav__links a.is-active{color:var(--text);font-weight:500}
.nav__links a.is-active::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--accent)}
.nav__right{display:flex;align-items:center;gap:16px;flex-shrink:0}
.nav__phone{font-size:14px;color:var(--muted);font-family:var(--font-mono);font-variant-numeric:tabular-nums;white-space:nowrap;transition:color .2s ease}
.nav__phone:hover{color:var(--accent)}
.nav-mobile{display:none;position:relative}
.nav-mobile summary{list-style:none;cursor:pointer;width:40px;height:40px;display:flex;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:var(--radius);font-size:18px;color:var(--accent)}
.nav-mobile summary::-webkit-details-marker{display:none}
.nav-mobile__panel{position:absolute;right:0;top:48px;width:220px;background:rgba(20,28,36,.97);border:1px solid var(--line);border-radius:var(--radius);padding:8px}
.nav-mobile__panel a{display:block;padding:12px 16px;font-size:14px;color:var(--muted);border-radius:var(--radius)}
.nav-mobile__panel a:hover,.nav-mobile__panel a.is-active{background:var(--surface-2);color:var(--text)}

/* ---------- 首屏 ---------- */
.hero{padding:96px 0;position:relative}
.hero__grid{display:grid;grid-template-columns:560px minmax(0,1fr);gap:48px;align-items:center}
.hero__copy{display:flex;flex-direction:column;gap:24px;align-items:flex-start}
.hero__copy .h1{max-width:560px}
.hero__copy .body-lg{max-width:520px;border-left:2px solid var(--accent);padding-left:20px}
.hero__meta{display:flex;flex-wrap:wrap;align-items:center;gap:20px}
.status-chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 12px;border:1px solid rgba(76,201,216,.32);border-radius:var(--radius);
  background:rgba(76,201,216,.06);font-size:12px;color:var(--accent);
  font-family:var(--font-mono);letter-spacing:.02em;
}
.status-chip__dot{width:6px;height:6px;border-radius:50%;background:var(--accent);flex-shrink:0}
.status-chip__sep{color:rgba(76,201,216,.45)}
.hero__visual{display:flex;flex-direction:column;gap:16px}
.hero__figure{
  position:relative;width:100%;height:440px;overflow:hidden;
  background:var(--surface);border:1px solid var(--line-strong);border-radius:var(--radius);
}
.hero__figure img{width:100%;height:100%;object-fit:cover;object-position:center}
.hero__figure::before{
  content:"";position:absolute;inset:0;z-index:1;pointer-events:none;
  background:
    linear-gradient(to bottom,rgba(11,17,22,.05),transparent 40%,rgba(11,17,22,.72)),
    repeating-linear-gradient(to right,rgba(76,201,216,.045) 0 1px,transparent 1px 64px);
}
.hero__figure::after{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;z-index:2;pointer-events:none;
  background:linear-gradient(90deg,var(--accent),rgba(76,201,216,.2) 45%,transparent);
}
/* HUD 四角定位标 */
.hud{position:absolute;width:16px;height:16px;z-index:3;pointer-events:none;opacity:.8}
.hud--tl{left:14px;top:14px;border-left:1px solid var(--accent);border-top:1px solid var(--accent)}
.hud--tr{right:14px;top:14px;border-right:1px solid var(--accent);border-top:1px solid var(--accent)}
.hud--bl{left:14px;bottom:14px;border-left:1px solid var(--accent);border-bottom:1px solid var(--accent)}
.hud--br{right:14px;bottom:14px;border-right:1px solid var(--accent);border-bottom:1px solid var(--accent)}
.hud-tag{
  position:absolute;left:28px;top:28px;z-index:3;
  font-family:var(--font-mono);font-size:11px;line-height:1.7;letter-spacing:.08em;
  color:var(--text);text-shadow:0 1px 8px rgba(0,0,0,.8);
}
.hud-tag b{color:var(--accent);font-weight:600}
.hud-coord{
  position:absolute;right:28px;bottom:24px;z-index:3;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;color:rgba(242,246,248,.72);
}
.figcap{
  display:flex;align-items:center;gap:12px;font-size:12px;color:var(--muted);
  padding-top:12px;border-top:1px solid var(--line);
}
.figcap::before{content:"";display:block;width:32px;height:1px;background:var(--accent);flex-shrink:0}
.figcap__code{margin-left:auto;font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;color:rgba(154,170,182,.52)}

/* ---------- 数据条 ---------- */
.stats{position:relative;background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:40px 0}
.stats::before{content:"";position:absolute;left:0;right:0;top:-1px;height:1px;background:linear-gradient(90deg,transparent,rgba(76,201,216,.65) 30%,rgba(76,201,216,.2) 70%,transparent)}
.stats__grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr))}
.stats__item{display:flex;flex-direction:column;gap:8px;padding:4px 32px;border-left:1px solid var(--line)}
.stats__item:first-child{padding-left:0;border-left:0}
.stats__item::before{content:attr(data-idx);font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;color:rgba(154,170,182,.58)}
.stats__num{font-family:var(--font-mono);font-size:40px;font-weight:600;color:var(--accent);font-variant-numeric:tabular-nums;line-height:1.2;letter-spacing:-.02em}
.stats__label{font-size:14px;color:var(--muted)}

/* ---------- 卡片 ---------- */
.card{
  position:relative;overflow:hidden;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:32px;display:flex;flex-direction:column;gap:16px;
  transition:border-color .22s ease,background-color .22s ease,transform .22s ease;
}
.card::before{
  content:"";position:absolute;left:0;top:0;width:100%;height:1px;
  background:linear-gradient(90deg,var(--accent),rgba(76,201,216,.25) 40%,transparent 75%);
  opacity:.3;transition:opacity .22s ease;pointer-events:none;
}
.card::after{
  content:"";position:absolute;right:30px;top:30px;width:9px;height:9px;pointer-events:none;
  background:linear-gradient(var(--line-strong),var(--line-strong)) center/9px 1px no-repeat,
             linear-gradient(var(--line-strong),var(--line-strong)) center/1px 9px no-repeat;
  opacity:.9;
}
.card:hover{transform:translateY(-4px);border-color:rgba(76,201,216,.55);background:var(--surface-hover)}
.card:hover::before{opacity:1}
.card--raised{background:var(--surface-2)}
.card--plain{background:var(--bg);border:0}
.card--feature::after{display:none}
.card__icon{
  position:absolute;right:28px;top:24px;width:44px;height:44px;
  display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:var(--radius);
  background:rgba(76,201,216,.05);color:var(--accent);
  transition:border-color .22s ease,background-color .22s ease;
}
.card__icon svg{width:24px;height:24px;display:block}
.card:hover .card__icon{border-color:rgba(76,201,216,.55);background:rgba(76,201,216,.13)}
.card__no{font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;color:var(--accent)}
.card__title{font-size:24px;font-weight:600;line-height:1.4;letter-spacing:-.01em}
.card__desc{font-size:14px;line-height:1.85;color:var(--muted)}
.card__link{margin-top:auto;display:inline-flex;align-items:center;width:fit-content;font-size:14px;color:var(--accent);font-weight:500;transition:transform .2s ease}
.card__link:hover{transform:translateX(4px);text-decoration:underline;text-underline-offset:4px}

/* ---------- 编号行（场景 / 业务对照） ---------- */
.row-list{display:flex;flex-direction:column;gap:0}
.data-row{display:grid;grid-template-columns:64px 280px minmax(0,1fr);gap:32px;align-items:center;padding:32px;background:var(--surface);border-radius:var(--radius);border-bottom:1px solid var(--bg);transition:background-color .2s ease}
.data-row:last-of-type{border-bottom:0}
.data-row:hover{background:var(--surface-hover)}
.data-row__no{font-family:var(--font-mono);font-size:32px;font-weight:600;color:var(--accent);line-height:1.2}
.data-row__title{font-size:20px;font-weight:600}
.data-row__body{font-size:14px;line-height:1.85;color:var(--muted)}
.compare-row{display:grid;grid-template-columns:48px 240px minmax(0,1fr);gap:24px;padding:24px 24px 24px 22px;align-items:start;background:var(--bg);border-radius:var(--radius);border-bottom:1px solid var(--surface);border-left:2px solid transparent;transition:background-color .2s ease,border-left-color .2s ease}
.compare-row:last-of-type{border-bottom:0}
.compare-row:hover{background:var(--surface-hover);border-left-color:var(--accent)}
.data-row + .data-row,.compare-row + .compare-row{margin-top:8px}
.compare-row__no{font-family:var(--font-mono);font-size:20px;font-weight:600;color:var(--accent)}
.compare-row__title{font-size:20px;font-weight:600}
.compare-row__info{font-size:14px;line-height:1.85;color:var(--muted)}
.compare-row__info strong{color:var(--text);font-weight:500}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:16px}
.faq-item{position:relative;background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);padding:24px 24px 24px 68px;transition:border-color .2s ease,background-color .2s ease}
.faq-item::before{content:"Q";position:absolute;left:26px;top:24px;font-family:var(--font-mono);font-size:20px;font-weight:600;line-height:1.4;color:var(--accent)}
.faq-item:hover{border-color:rgba(76,201,216,.42);background:var(--surface-hover)}
.faq-item h3{font-size:20px;font-weight:600;margin-bottom:12px}
.faq-item p{font-size:14px;line-height:1.85;color:var(--muted)}

/* ---------- CTA ---------- */
.cta{
  position:relative;overflow:hidden;color:var(--bg);padding:96px 0;
  background-color:var(--accent);
  background-image:
    radial-gradient(620px 420px at 88% 12%,rgba(255,255,255,.26),transparent 72%),
    linear-gradient(115deg,rgba(11,17,22,.09),transparent 48%),
    repeating-linear-gradient(to right,rgba(11,17,22,.055) 0 1px,transparent 1px 48px),
    repeating-linear-gradient(to bottom,rgba(11,17,22,.055) 0 1px,transparent 1px 48px);
}
.cta::after{
  content:"";position:absolute;right:-150px;top:-170px;width:520px;height:520px;
  border:1px solid rgba(11,17,22,.18);border-radius:50%;
  box-shadow:0 0 0 64px rgba(11,17,22,.035),0 0 0 128px rgba(11,17,22,.025);
  pointer-events:none;
}
.cta::before{
  content:"FZY / 006 — BUILD · MEASURE · HAND OVER";
  position:absolute;right:120px;bottom:44px;pointer-events:none;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;color:rgba(11,17,22,.45);
}
.cta .h2{max-width:900px}
.cta p{margin-top:16px;font-size:16px;line-height:1.75;max-width:760px}
.cta__inner{position:relative;z-index:1;display:flex;flex-direction:column;align-items:flex-start;gap:24px}
.cta__note{font-size:14px;font-variant-numeric:tabular-nums;font-family:var(--font-mono)}

/* ---------- 页脚 ---------- */
.site-footer{position:relative;background:var(--bg);border-top:1px solid var(--line);padding:80px 0 40px}
.site-footer::before{content:"";position:absolute;top:-1px;left:0;right:0;height:1px;background:linear-gradient(90deg,var(--accent),rgba(76,201,216,.22) 38%,transparent 75%)}
.footer__grid{display:grid;grid-template-columns:360px 320px minmax(0,1fr);gap:64px}
.footer__col{display:flex;flex-direction:column;gap:16px}
.footer__name{font-size:20px;font-weight:600;letter-spacing:.01em}
.footer__title{font-family:var(--font-en);font-size:14px;font-weight:600;letter-spacing:.08em;color:var(--accent)}
.footer__list{font-size:14px;line-height:2.15;color:var(--muted);word-break:break-word}
.footer__list a{transition:color .2s ease;border-bottom:1px solid transparent}
.footer__list a:hover{color:var(--accent);border-bottom-color:var(--accent)}
.footer__bottom{margin-top:64px;padding-top:24px;border-top:1px solid var(--line);font-size:12px;line-height:1.85;color:var(--muted);display:flex;flex-wrap:wrap;gap:16px;justify-content:space-between}
.footer__bottom a:hover{color:var(--accent)}
.to-top{
  position:fixed;right:24px;bottom:24px;z-index:40;
  width:44px;height:44px;display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line-strong);border-radius:var(--radius);
  background:rgba(20,28,36,.88);color:var(--accent);font-size:18px;
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .22s ease,transform .22s ease,border-color .22s ease,visibility .22s;
}
.to-top.is-shown{opacity:1;visibility:visible;transform:none}
.to-top:hover{border-color:var(--accent)}

/* ---------- 关于页 ---------- */
.split{display:grid;grid-template-columns:560px minmax(0,1fr);gap:48px;align-items:center}
.split__copy{display:flex;flex-direction:column;gap:24px}
.split__figure{position:relative;width:100%;height:420px;overflow:hidden;background:var(--bg);border:1px solid var(--line-strong);border-radius:var(--radius)}
.split__figure img{width:100%;height:100%;object-fit:cover}
.split__figure::after{content:"";position:absolute;inset:0;pointer-events:none;background:linear-gradient(to bottom,transparent 55%,rgba(11,17,22,.6))}
.split__figure .hud-coord{bottom:20px}
.area-grid{display:grid;grid-template-columns:360px minmax(0,1fr);gap:48px}
.area-list{font-size:16px;line-height:2;color:var(--muted);border-left:1px solid var(--line);padding-left:32px}
.area-list b{color:var(--text);font-weight:500}

/* ---------- 联系页 ---------- */
.contact-grid{display:grid;grid-template-columns:1fr;gap:48px;align-items:start;max-width:760px;margin-inline:auto}
.wx-card{margin-top:24px;display:flex;align-items:center;gap:20px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:20px}
.wx-card__qr{width:132px;height:132px;flex:none;display:block;background:#fff;border-radius:10px;padding:7px;box-shadow:0 6px 20px rgba(0,0,0,.28)}
.wx-card__body{flex:1;min-width:0}
.wx-card__title{font-size:16px;font-weight:600;margin-bottom:6px}
.wx-card__title .accent{color:var(--accent)}
.wx-card__desc{font-size:13.5px;line-height:1.7;color:var(--muted)}
@media (max-width:560px){.wx-card{flex-direction:column;text-align:center;gap:14px}}
.info-card{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);padding:8px 24px;display:flex;flex-direction:column}
.info-card__row{display:grid;grid-template-columns:56px minmax(0,1fr);gap:16px;align-items:start;padding:16px 0;font-size:15px;line-height:1.75;border-bottom:1px solid var(--line)}
.info-card__row:last-child{border-bottom:0}
.info-card__label{font-size:12px;letter-spacing:.06em;color:var(--muted);padding-top:3px}
.info-card__row a{color:var(--text);transition:color .2s ease}
.info-card__row a:hover{color:var(--accent)}
.info-card__row .accent{color:var(--accent)}
.form-card{position:relative;background:var(--bg);border:1px solid var(--line-strong);border-radius:var(--radius);padding:32px;display:flex;flex-direction:column;gap:16px}
.form-card::before{content:"";position:absolute;left:0;top:0;width:100%;height:1px;background:linear-gradient(90deg,var(--accent),transparent 55%)}
.form-card__title{font-size:24px;font-weight:600;margin-bottom:8px;display:flex;align-items:center;gap:12px}
.form-card__title::before{content:"";width:4px;height:20px;background:var(--accent);display:block}
.field{display:flex;flex-direction:column;gap:8px}
.field label{font-size:12px;color:var(--muted);letter-spacing:.04em}
.field input,.field textarea,.field select{width:100%;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:12px 16px;font-size:14px;transition:border-color .2s ease,background-color .2s ease}
.field textarea{resize:vertical;min-height:96px}
.field input::placeholder,.field textarea::placeholder{color:#6D7E8A}
.field input:hover,.field textarea:hover,.field select:hover{border-color:var(--line-strong)}
.field input:focus,.field textarea:focus,.field select:focus{outline:none;border-color:var(--accent);background:#16222B}
.form-feedback{display:none;margin-top:8px;padding:12px 16px;background:var(--surface-2);border-left:2px solid var(--accent);font-size:14px;color:var(--text)}
.form-feedback.is-shown{display:block}

/* ---------- 设计规范页 ---------- */
.swatch-band{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));height:80px;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line)}
.swatch-band span{display:block}
.swatch-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.swatch{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);padding:16px;display:flex;flex-direction:column;gap:8px;transition:border-color .2s ease}
.swatch:hover{border-color:rgba(76,201,216,.45)}
.swatch__chip{height:32px;border-radius:var(--radius);border:1px solid var(--line)}
.swatch__name{font-size:14px;font-weight:500}
.swatch__hex{font-family:var(--font-mono);font-size:12px;color:var(--muted)}
.grid-demo{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:8px}
.grid-demo span{height:64px;background:var(--surface-2);border-radius:var(--radius)}
.grid-demo span:nth-child(odd){background:rgba(76,201,216,.28)}
.type-scale{display:flex;flex-direction:column;gap:24px}
.check-list{font-size:14px;line-height:2.2;color:var(--muted)}
.check-list strong{color:var(--text);font-weight:500}
.check-list p{padding-left:20px;border-left:1px solid var(--line);margin-bottom:8px}
.check-list p:hover{border-left-color:var(--accent)}
.guide-nav{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
.guide-nav a{font-size:14px;padding:8px 16px;border:1px solid var(--line);border-radius:var(--radius);color:var(--muted);transition:border-color .2s ease,color .2s ease}
.guide-nav a:hover{border-color:var(--accent);color:var(--accent)}

/* ---------- 动效（淡入 + 8px 微位移，240ms；交互反馈不计入同屏动效） ---------- */
@media (prefers-reduced-motion: no-preference){
  html{scroll-behavior:smooth}
  .js-motion .reveal{opacity:0;translate:0 8px}
  .js-motion .reveal.is-visible{opacity:1;translate:none;transition:opacity .24s ease-out,translate .24s ease-out}
  /* stagger 卡片：入场与 hover 过渡并存，避免互相覆盖 */
  .js-motion .card.reveal.is-visible{transition:opacity .24s ease-out,translate .24s ease-out,border-color .22s ease,background-color .22s ease,transform .22s ease}
  .hero__copy .h1{animation:fade-up .28s ease-out both}
  .hero__copy .body-lg{animation:fade-up .28s ease-out .06s both}
  @keyframes fade-up{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}
}

/* ---------- 响应式 ---------- */
@media (max-width:1248px){
  .container{padding:0 40px}
}
@media (max-width:1024px){
  .container{padding:0 32px}
  .section{padding:88px 0}
  .section--tight,.page-head,.hero,.cta{padding:72px 0}
  .h1{font-size:52px}
  .h2{font-size:40px}
  .hero__grid,.split{grid-template-columns:minmax(0,1fr);gap:48px}
  .hero__figure{height:360px}
  .split__figure{height:340px}
  .stats__grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px}
  .stats__item:nth-child(3){padding-left:0;border-left:0}
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer__grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:40px}
  .contact-grid,.area-grid{grid-template-columns:minmax(0,1fr);gap:32px}
  .compare-row{grid-template-columns:48px minmax(0,1fr);gap:16px}
  .compare-row__info{grid-column:1 / -1}
  .data-row{grid-template-columns:64px minmax(0,1fr);gap:16px 24px}
  .data-row__body{grid-column:1 / -1}
  .nav__phone{display:none}
  .swatch-list{grid-template-columns:repeat(2,minmax(0,1fr))}
  .cta::after{right:-220px;top:-220px}
  .cta::before{right:32px}
  .page-head::after{right:-180px}
}
@media (max-width:768px){
  .container{padding:0 24px}
  .section{padding:64px 0}
  .section--tight,.page-head,.hero,.cta{padding:56px 0}
  .h1{font-size:40px}
  .h2{font-size:32px}
  .h3{font-size:26px}
  .h4{font-size:20px}
  .section-head{margin-bottom:32px}
  .nav__links,.nav__right{display:none}
  .nav-mobile{display:block}
  .grid-2,.grid-3,.grid-4,.stats__grid,.footer__grid{grid-template-columns:minmax(0,1fr);gap:16px}
  .hero__figure{height:260px}
  .split__figure{height:260px}
  .data-row,.compare-row{grid-template-columns:minmax(0,1fr);gap:8px;padding:24px}
  .data-row__no{font-size:24px}
  .data-row__body,.compare-row__info{grid-column:auto}
  .footer__grid{gap:32px}
  .footer__bottom{margin-top:40px}
  .swatch-band{height:56px;grid-template-columns:repeat(3,minmax(0,1fr))}
  .swatch-list{grid-template-columns:minmax(0,1fr)}
  .grid-demo{gap:4px}
  .grid-demo span{height:40px}
  .btn{height:46px;padding:0 24px}
  .form-card{padding:24px}
  .faq-item{padding:20px 20px 20px 24px}
  .faq-item::before{display:none}
  .stats__item{padding:8px 0 16px;border-left:0;border-bottom:1px solid var(--line)}
  .stats__item:nth-child(3){padding-left:0}
  .stats__item:last-child{border-bottom:0;padding-bottom:0}
  .stats__num{font-size:34px}
  .hud-tag{left:22px;top:22px;font-size:10px}
  .hud-coord{right:22px;bottom:18px;font-size:10px}
  .cta::after{width:300px;height:300px;right:-170px;top:-150px}
  .cta::before{display:none}
  .page-head::after{width:280px;height:280px;right:-160px;top:-120px}
  .to-top{right:16px;bottom:16px;width:40px;height:40px}
  .area-list{padding-left:20px}
  body{background-attachment:scroll,scroll,scroll}
}
@media (max-width:420px){
  .container{padding:0 16px}
  .brand__en{display:none}
  .h1{font-size:34px}
  .h2{font-size:28px}
  .btn-row{flex-direction:column;align-items:stretch}
  .btn-row .btn{width:100%}
  .hero__meta{gap:12px}
  .figcap__code{display:none}
  .info-card__row{grid-template-columns:48px minmax(0,1fr);gap:10px}
}

/* =============================================================
   v3 · 动效层（冲击力增强）
   原则：只走 transform / opacity / clip-path；无外部依赖；
        减少动效偏好 / 触屏 / 窄屏自动降级；视口外不跑动画。
   ============================================================= */
main{position:relative;z-index:1;overflow-x:clip}
.site-footer{position:relative;z-index:1}

/* ---- 全局 FX 层 ---- */
.fx-canvas,.fx-glow,.fx-scan{position:fixed;pointer-events:none}
.fx-canvas{top:0;left:0;width:100%;height:100%;z-index:0}
.fx-glow{
  inset:0;z-index:0;opacity:0;transition:opacity .45s ease;
  background:radial-gradient(460px circle at var(--gx,50%) var(--gy,50%),rgba(76,201,216,.085),transparent 70%);
}
.fx-glow.is-on{opacity:1}
.fx-scan{
  left:0;right:0;top:-220px;height:220px;z-index:2;
  background:linear-gradient(to bottom,transparent,rgba(76,201,216,.030) 55%,rgba(76,201,216,.075) 90%,transparent);
  animation:fx-scan-down 11s linear infinite;
}
@keyframes fx-scan-down{from{transform:translateY(0)}to{transform:translateY(calc(100vh + 440px))}}
.fx-progress{
  position:fixed;left:0;top:0;right:0;height:2px;z-index:60;pointer-events:none;
  transform:scaleX(var(--p,0));transform-origin:left center;will-change:transform;
  background:linear-gradient(90deg,#2E8F9B,var(--accent) 55%,#EAFDFF);
  box-shadow:0 0 14px rgba(76,201,216,.75);
}

/* ---- 开场序列 ---- */
.js-fx .hero__meta{animation:fx-rise .65s cubic-bezier(.16,1,.3,1) .04s both}
.js-fx .hero__copy .h1{animation:fx-unveil .9s cubic-bezier(.16,1,.3,1) .12s both}
.js-fx .hero__copy .body-lg{animation:fx-rise .65s cubic-bezier(.16,1,.3,1) .3s both}
.js-fx .hero__copy .btn-row{animation:fx-rise .65s cubic-bezier(.16,1,.3,1) .42s both}
.js-fx .hero__visual{animation:fx-zoom .95s cubic-bezier(.16,1,.3,1) .12s both}
.js-fx .page-head > .container > *{animation:fx-rise .72s cubic-bezier(.16,1,.3,1) both}
.js-fx .page-head > .container > *:nth-child(1){animation-delay:.06s}
.js-fx .page-head > .container > *:nth-child(2){animation-name:fx-unveil;animation-duration:.95s;animation-delay:.16s}
.js-fx .page-head > .container > *:nth-child(3){animation-delay:.34s}
@keyframes fx-rise{from{opacity:0;translate:0 26px}to{opacity:1;translate:none}}
@keyframes fx-unveil{from{opacity:0;clip-path:inset(0 0 100% 0);translate:0 34px}55%{opacity:1}to{opacity:1;clip-path:inset(0 0 0 0);translate:none}}
@keyframes fx-zoom{from{opacity:0;transform:scale(.94)}to{opacity:1;transform:none}}

/* 标题强调：冰青流光扫过 */
.js-fx .hero__copy .h1 .accent{
  background:linear-gradient(100deg,#4CC9D8 0%,#4CC9D8 34%,#EAFDFF 50%,#4CC9D8 66%,#4CC9D8 100%);
  background-size:250% 100%;background-repeat:repeat;
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:transparent;
  animation:fx-shine 5s ease-in-out 1.4s infinite;
}
@keyframes fx-shine{0%{background-position:0% 0}45%,100%{background-position:250% 0}}

/* HUD 绘制 / 状态呼吸 / 品牌辉光 */
.js-fx .hud{animation:fx-hud .55s cubic-bezier(.16,1,.3,1) both}
.js-fx .hud--tl{animation-delay:.62s;transform-origin:left top}
.js-fx .hud--tr{animation-delay:.72s;transform-origin:right top}
.js-fx .hud--bl{animation-delay:.82s;transform-origin:left bottom}
.js-fx .hud--br{animation-delay:.92s;transform-origin:right bottom}
@keyframes fx-hud{from{opacity:0;transform:scale(.15)}to{opacity:.8;transform:none}}
.status-chip__dot{position:relative}
.status-chip__dot::after{
  content:"";position:absolute;inset:-5px;border:1px solid var(--accent);border-radius:50%;
  animation:fx-pulse 2.2s ease-out infinite;
}
@keyframes fx-pulse{0%{transform:scale(.35);opacity:.85}100%{transform:scale(1.7);opacity:0}}
.js-fx .brand__mark{animation:fx-mark 3.6s ease-in-out infinite}
@keyframes fx-mark{0%,100%{filter:drop-shadow(0 0 0 rgba(76,201,216,0))}50%{filter:drop-shadow(0 0 7px rgba(76,201,216,.5))}}

/* 图片：缓慢推近 + 一次性扫光 + 滚动视差 */
.js-fx .hero__figure img,.js-fx .split__figure img{animation:fx-kenburns 18s ease-out both}
@keyframes fx-kenburns{from{transform:scale(1.09)}to{transform:scale(1)}}
.js-fx .hero__figure img{translate:0 var(--py,0px)}
.js-fx .page-head::after{translate:0 var(--py2,0px)}
.fx-sweep{
  position:absolute;top:-40%;bottom:-40%;left:-60%;width:32%;z-index:4;pointer-events:none;
  background:linear-gradient(90deg,transparent,rgba(76,201,216,.14) 42%,rgba(234,253,255,.32) 50%,rgba(76,201,216,.14) 58%,transparent);
  transform:skewX(-18deg);animation:fx-sweep 1.5s cubic-bezier(.25,.1,.25,1) .7s both;
}
@keyframes fx-sweep{from{left:-60%;opacity:1}to{left:135%;opacity:0}}

/* ---- 滚动揭示强化（delay 走 --d，不污染 hover 过渡） ---- */
.js-motion .reveal{opacity:0;translate:0 28px}
.js-motion .reveal.is-visible{opacity:1;translate:none;transition:opacity .65s cubic-bezier(.16,1,.3,1) var(--d,0ms),translate .65s cubic-bezier(.16,1,.3,1) var(--d,0ms)}
.js-motion .card.reveal.is-visible{transition:opacity .65s cubic-bezier(.16,1,.3,1) var(--d,0ms),translate .65s cubic-bezier(.16,1,.3,1) var(--d,0ms),border-color .22s ease,background-color .22s ease,transform .22s ease}

/* 区块标题：短横线绘制 + 标题揭开 */
.js-motion .section-head.reveal .eyebrow::before{transform:scaleX(0);transform-origin:left center;transition:transform .7s cubic-bezier(.16,1,.3,1) .12s}
.js-motion .section-head.reveal.is-visible .eyebrow::before{transform:scaleX(1)}
.js-motion .section-head.reveal h2,.js-motion .section-head.reveal h3{clip-path:inset(0 0 100% 0);translate:0 22px;transition:clip-path .85s cubic-bezier(.16,1,.3,1) .1s,translate .85s cubic-bezier(.16,1,.3,1) .1s}
.js-motion .section-head.reveal.is-visible h2,.js-motion .section-head.reveal.is-visible h3{clip-path:inset(0 0 0 0);translate:none}
.js-motion .section-head.reveal > p{opacity:0;translate:0 14px;transition:opacity .6s ease .38s,translate .6s ease .38s}
.js-motion .section-head.reveal.is-visible > p{opacity:1;translate:none}

/* 区块进入：顶部一道光掠过 */
.section{position:relative}
.section::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;z-index:2;pointer-events:none;
  background:linear-gradient(90deg,transparent,var(--accent) 45%,transparent);
  transform:scaleX(0);transform-origin:left center;opacity:0;
}
.section.is-inview::before{animation:fx-section-line 1.15s ease-out both}
@keyframes fx-section-line{0%{transform:scaleX(0);opacity:.85}100%{transform:scaleX(1);opacity:0}}

/* ---- 卡片：顶线展开 + 鼠标聚光 + 3D 倾斜 ---- */
.card{background-image:radial-gradient(420px circle at var(--mx,50%) var(--my,50%),rgba(76,201,216,var(--cg,.055)),transparent 68%)}
.js-motion .card.reveal::before{transform:scaleX(0);transform-origin:left center;transition:transform .7s cubic-bezier(.16,1,.3,1) .14s,opacity .22s ease}
.js-motion .card.reveal.is-visible::before{transform:scaleX(1)}
.card.is-tilting{transform:perspective(900px) rotateX(var(--rx,0deg)) rotateY(var(--ry,0deg));transition:transform .12s linear,border-color .22s ease,background-color .22s ease}
.card.is-tilting:hover{transform:perspective(900px) rotateX(var(--rx,0deg)) rotateY(var(--ry,0deg)) translateY(-4px);border-color:rgba(76,201,216,.62);background-color:var(--surface-hover)}
.card.is-tilting:hover .card__icon{transform:scale(1.08)}
.card__icon{transition:border-color .22s ease,background-color .22s ease,transform .22s ease}

/* ---- 按钮流光 ---- */
.btn{position:relative;overflow:hidden}
.btn::before{
  content:"";position:absolute;top:0;bottom:0;left:-55%;width:38%;pointer-events:none;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.40),transparent);
  transform:skewX(-20deg);opacity:0;
}
.btn:hover::before{animation:fx-btn-shine .72s ease-out}
@keyframes fx-btn-shine{0%{left:-55%;opacity:0}12%{opacity:1}100%{left:130%;opacity:0}}

/* ---- 数字计数 / 数据行 ---- */
.stats__num{transition:color .3s ease,text-shadow .3s ease}
.stats__num.is-counting{color:#EAFDFF;text-shadow:0 0 22px rgba(76,201,216,.9)}
.stats__item{transition:transform .3s ease}
.stats__item:hover{transform:translateY(-3px)}
.data-row,.compare-row{position:relative;overflow:hidden}
.data-row::before,.compare-row::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:2px;z-index:1;
  background:var(--accent);box-shadow:0 0 14px rgba(76,201,216,.7);
  transform:scaleY(0);transform-origin:top center;
  transition:transform .32s cubic-bezier(.16,1,.3,1);
}
.data-row:hover::before,.compare-row:hover::before{transform:scaleY(1)}
.compare-row:hover{border-left-color:transparent}
.data-row__no,.compare-row__no{transition:text-shadow .25s ease}
.data-row:hover .data-row__no,.compare-row:hover .compare-row__no{text-shadow:0 0 16px rgba(76,201,216,.8)}
.faq-item{transition:border-color .25s ease,background-color .25s ease,transform .3s cubic-bezier(.16,1,.3,1)}
.faq-item:hover{transform:translateX(6px)}

/* ---- CTA 光带 / 页脚线呼吸 / 回顶 ---- */
.fx-beam{
  position:absolute;top:-30%;bottom:-30%;left:-45%;width:28%;z-index:0;pointer-events:none;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.20) 50%,transparent);
  transform:skewX(-16deg);animation:fx-beam 6s ease-in-out 1.2s infinite;
}
@keyframes fx-beam{0%{left:-45%;opacity:0}8%{opacity:1}52%{left:125%;opacity:1}68%,100%{left:125%;opacity:0}}
.js-fx .cta::after{animation:fx-orbit 9s ease-in-out infinite}
@keyframes fx-orbit{0%,100%{transform:scale(1)}50%{transform:scale(1.09)}}
.js-fx .site-footer::before{animation:fx-line-pulse 4s ease-in-out infinite}
@keyframes fx-line-pulse{0%,100%{opacity:.55}50%{opacity:1}}
.to-top.is-shown{animation:fx-pop .4s cubic-bezier(.16,1,.3,1) both}
@keyframes fx-pop{from{opacity:0;transform:translateY(12px) scale(.85)}to{opacity:1;transform:none}}

/* 滚动条 */
::-webkit-scrollbar{width:10px}
::-webkit-scrollbar-track{background:var(--bg)}
::-webkit-scrollbar-thumb{background:var(--surface-2);border:2px solid var(--bg);border-radius:6px}
::-webkit-scrollbar-thumb:hover{background:var(--accent)}

/* ---- 文章页：长文阅读降噪 ---- */
.is-article .fx-canvas{opacity:.38}
.is-article .fx-progress,.is-article .fx-glow,.is-article .fx-scan{display:none}

/* ---- 降级 ---- */
@media (prefers-reduced-motion: reduce){
  .fx-canvas,.fx-glow,.fx-scan,.fx-beam,.fx-sweep{display:none!important}
  .status-chip__dot::after{display:none!important}
}
@media (hover:none),(pointer:coarse){
  .fx-glow,.fx-scan{display:none}
  .card{background-image:none}
}
@media (max-width:768px){
  .fx-glow,.fx-scan,.fx-sweep,.fx-beam{display:none}
  .card{background-image:none}
  .js-fx .hero__figure img,.js-fx .split__figure img{animation:none}
  .js-fx .hero__figure img{translate:none}
  .js-fx .page-head::after{translate:none}
  .faq-item:hover{transform:none}
  ::-webkit-scrollbar{width:0}
}

/* =============================================================
   v4 · 版式与质感精修（Refinement Layer）
   不改设计令牌、不改业务文案与模块结构、不叠加新动效。
   只做四件事：排版层级 / 空间呼吸 / 页面身份 / 细节质感。
   全站页面即时生效；间距字号一律 clamp 自适应，窄屏与
   prefers-reduced-motion 自动降级。
   ============================================================= */

/* ---- 1. 排版：中文标题松开一点，正文行长短一点 ---- */
.h1{letter-spacing:-.012em;line-height:1.2}
.h2{letter-spacing:-.012em;line-height:1.24}
.h3{letter-spacing:-.006em}
.h1,.h2,.h3,.section-head h2,.section-head h3,.cta .h2{text-wrap:balance}
.body-lg,.section-head > p{max-width:640px}
.cta p{max-width:680px}
.section-head{max-width:900px;margin-bottom:clamp(32px,3.9vw,56px)}
.section-head h2,.section-head h3{margin-top:20px}
.section-head > p{margin-top:20px;font-size:15.5px;line-height:1.8}

/* 章节标尺：每节标题下方一道刻度线，打破全站同质的区块节奏 */
.section-head::after{
  content:"";display:block;height:1px;margin-top:clamp(24px,2.2vw,32px);
  background:linear-gradient(90deg,rgba(76,201,216,.55) 0 52px,rgba(76,201,216,.12) 52px 100%);
  opacity:.85;pointer-events:none;
}

/* eyebrow：小一号、字距拉开、短线渐隐 */
.eyebrow{font-size:11px;letter-spacing:.2em;gap:12px}
.eyebrow:not(.eyebrow--dark)::before{width:26px;background:linear-gradient(90deg,var(--accent),rgba(76,201,216,.2))}

/* ---- 2. 页面身份：每个内页页头一条 mono 编号 + 标尺 ---- */
.page-head{
  background-image:
    linear-gradient(to right,rgba(76,201,216,.042) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(76,201,216,.032) 1px,transparent 1px);
  background-size:48px 48px;
}
.page-head > .container{position:relative}
.page-head > .container::before{
  content:"FZY / SECTION";
  position:absolute;left:0;top:-44px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.2em;
  color:rgba(76,201,216,.72);white-space:nowrap;pointer-events:none;
}
.page-head > .container::after{
  content:"";position:absolute;left:0;right:0;top:-16px;height:1px;
  background:linear-gradient(90deg,rgba(76,201,216,.5),var(--line) 20%,transparent 76%);
  pointer-events:none;
}
[data-page="services"] .page-head > .container::before{content:"02 / SERVICES & SOLUTIONS"}
[data-page="about"]    .page-head > .container::before{content:"03 / ABOUT US"}
[data-page="contact"]  .page-head > .container::before{content:"04 / CONTACT"}
[data-page="guide"]    .page-head > .container::before{content:"07 / DESIGN SYSTEM"}
[data-page="error"]    .page-head > .container::before{content:"ERR / 404 NOT FOUND"}

/* 首页 hero 与内页同族：一条编号 + 一道标尺 */
.hero__grid{position:relative}
[data-page="home"] .hero__grid::before{
  content:"01 / INDEX · DIGITAL ENGINEERING";
  position:absolute;left:0;top:-46px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.2em;
  color:rgba(76,201,216,.70);white-space:nowrap;pointer-events:none;
}
[data-page="home"] .hero__grid::after{
  content:"";position:absolute;left:0;right:0;top:-18px;height:1px;
  background:linear-gradient(90deg,rgba(76,201,216,.5),var(--line) 20%,transparent 76%);
  pointer-events:none;
}
.hero{padding:clamp(56px,7.2vw,104px) 0 clamp(56px,7.8vw,112px)}
.hero__copy .h1{font-size:clamp(34px,4.7vw,68px)}
.hero__copy .body-lg{padding-left:24px}
.hero__figure,.split__figure{border-color:rgba(76,201,216,.26)}

/* ---- 3. 数据条：仪表刻度感 ---- */
.stats__item{position:relative;padding-top:22px}
.stats__item::after{
  content:"";position:absolute;left:32px;right:24px;top:0;height:3px;
  background:repeating-linear-gradient(90deg,rgba(76,201,216,.5) 0 2px,transparent 2px 12px);
  opacity:.55;pointer-events:none;
}
.stats__item:first-child::after{left:0}
.stats__num{font-size:clamp(34px,2.7vw,38px);letter-spacing:-.035em}
.stats__label{font-size:13.5px}

/* ---- 4. 卡片：序号更像标签，标题更收敛，描述限宽 ---- */
.card__no{
  display:inline-flex;align-items:center;gap:10px;
  font-size:11px;letter-spacing:.14em;
}
.card__no::after{content:"";width:22px;height:1px;background:rgba(76,201,216,.42)}
.card__title{font-size:23px;letter-spacing:-.012em}
.card__desc{max-width:52ch}
.card:hover::before{height:2px}
.card__icon{width:46px;height:46px}

/* 数据行 / 对照表：降低序号音量，让标题成为主角 */
.data-row__no{font-size:28px;opacity:.9}
.data-row__title,.compare-row__title{letter-spacing:-.006em}
.compare-row__title{font-size:18px}
.data-row__body,.compare-row__info{max-width:76ch}
.data-row__title{font-size:19px}
.note{font-size:12.5px;line-height:1.9}

/* ---- 5. 关于页 / 联系页 ---- */
.area-list{border-left-width:2px;border-left-color:var(--line-strong);padding-left:36px}
.form-card{padding:clamp(24px,2.6vw,36px);gap:20px}
.form-card__title{font-size:22px;letter-spacing:-.008em}
.info-card{padding:8px 28px}
.field label{font-size:11px;letter-spacing:.1em}
.field input,.field textarea,.field select{padding:13px 16px}
.field input:focus,.field textarea:focus,.field select:focus{box-shadow:0 0 0 3px rgba(76,201,216,.10)}
.form-feedback{letter-spacing:.01em}

/* ---- 6. CTA 与页脚 ---- */
.cta{padding:clamp(56px,7.2vw,104px) 0}
.cta .h2{font-size:clamp(30px,3.9vw,56px);line-height:1.16;letter-spacing:-.02em}
.cta__inner{gap:26px}
.cta__note{letter-spacing:.02em}

.site-footer{overflow:hidden}
.site-footer .container{position:relative}
.site-footer .container::after{
  content:none;
  font-family:var(--font-en);font-size:clamp(40px,5vw,72px);font-weight:700;
  line-height:1;letter-spacing:.02em;color:rgba(76,201,216,.038);white-space:nowrap;
  top:auto;bottom:-6px;
}
.site-footer .footer__grid,.site-footer .footer__bottom{position:relative;z-index:1}
.footer__col:not(:first-child){position:relative}
.footer__col:not(:first-child)::before{
  content:"";position:absolute;left:-32px;top:2px;bottom:2px;width:1px;
  background:var(--line);pointer-events:none;
}
.footer__title{letter-spacing:.14em}

/* ---- 7. 规范页 ---- */
.swatch-band{height:clamp(56px,6.7vw,96px);border-color:var(--line-strong)}
.swatch__chip{height:clamp(32px,2.8vw,40px)}
.type-scale{gap:28px}
.check-list p{margin-bottom:0;padding-top:8px;padding-bottom:8px}
.guide-nav a{padding:11px 16px}

/* ---- 8. 可达性：主要交互目标 ≥44px ---- */
.nav__links a{padding:12px 0}
.insight-more button,.type-tabs button{min-height:44px}

/* ---- 9. 响应式与降级 ---- */
@media (max-width:1024px){
  .footer__col:not(:first-child)::before{left:-20px}
  .page-head > .container::before,.hero__grid::before{top:-34px}
}
@media (max-width:768px){
  .page-head{background-image:none}
  .page-head > .container::before,.page-head > .container::after,
  [data-page="home"] .hero__grid::before,[data-page="home"] .hero__grid::after{display:none}
  .footer__col:not(:first-child)::before{display:none}
  .site-footer .container::after{font-size:48px;top:-6px}
  .stats__item::after{display:none}
  .card__desc,.data-row__body,.compare-row__info{max-width:none}
}
@media (prefers-reduced-motion: reduce){
  .section-head::after,.stats__item::after{opacity:.6}
}

/* ---- 10. 服务页：六行对照 → 可折叠交付清单 ---- */
.acc{border-top:1px solid var(--line)}
.acc:last-of-type{border-bottom:1px solid var(--line)}
.acc__summary{
  display:flex;align-items:center;gap:20px;
  padding:22px 4px;cursor:pointer;list-style:none;
  transition:padding .25s ease;
}
.acc__summary::-webkit-details-marker{display:none}
.acc__summary::-moz-list-bullet{list-style:none}
.acc__summary:focus-visible{outline:2px solid var(--accent);outline-offset:4px;border-radius:4px}
.acc__no{
  flex:none;font-family:var(--font-mono);font-size:13px;letter-spacing:.06em;
  color:var(--accent);min-width:24px;
}
.acc__title{
  flex:1;font-size:clamp(18px,1.7vw,22px);font-weight:600;
  letter-spacing:-.01em;color:var(--text);transition:color .25s ease;
}
.acc__toggle{position:relative;flex:none;width:18px;height:18px}
.acc__toggle::before,.acc__toggle::after{
  content:"";position:absolute;background:var(--accent);border-radius:2px;
  transition:transform .3s cubic-bezier(.16,1,.3,1),opacity .3s ease;
}
.acc__toggle::before{top:8px;left:0;width:18px;height:2px}
.acc__toggle::after{left:8px;top:0;width:2px;height:18px}
.acc[open] .acc__toggle::after{transform:scaleY(0)}
.acc[open] > .acc__summary .acc__title{color:#EAFDFF}
.acc__body{overflow:hidden}
.acc__info{
  margin:0;padding:0 4px 28px clamp(28px,4vw,44px);
  font-size:15.5px;line-height:1.95;color:rgba(242,246,248,.82);
}
.acc__info strong{color:var(--text);font-weight:600}


/* =============================================================
   v5 · 版面结构与视觉层级（Visual Rebuild）
   本轮解决的问题：全站「标题 + 网格卡片」句式重复四遍，缺少
   主次与呼吸。做法是改结构而非加滤镜：
     1. 首屏配图 → 六业务能力雷达（信息图，非装饰图）
     2. 六业务 → 1 主卡 + 4 标准卡 + 1 宽卡的非对称版面
     3. Why → 左固定标题 + 右编号条目的编辑式双栏
     4. 新增「交付流程」横轴时间线，作为版面的呼吸区
   设计令牌不变；仅调整字阶与正文色对比度。
   ============================================================= */

/* ---- 0. 令牌微调：正文提亮一档，补一个极少量使用的辅助色 ---- */
:root{
  --muted:#A7B7C3;
  --line-soft:rgba(76,201,216,.14);
}

/* ---- 1. 首屏：能力雷达 ---- */
.hero__figure--matrix{
  height:auto;aspect-ratio:720/560;
  background:
    radial-gradient(58% 58% at 50% 46%, rgba(76,201,216,.075), transparent 72%),
    var(--surface);
}
.hero__matrix{
  width:100%;height:100%;
  object-fit:contain;object-position:center;
  padding:clamp(8px,1.2vw,18px);
}
.js-fx .hero__figure--matrix .hero__matrix{animation:none;translate:none}
.hero__figure--matrix::before{
  background:
    linear-gradient(to bottom,rgba(11,17,22,.10),transparent 55%,rgba(11,17,22,.42)),
    repeating-linear-gradient(to right,rgba(76,201,216,.038) 0 1px,transparent 1px 56px);
}

/* 首屏标题：放大、压紧行距，关键词做出层次 */
.hero__copy .h1{
  font-size:clamp(36px,4.9vw,72px);
  line-height:1.13;
  letter-spacing:-.022em;
}
.hero__copy .h1 .accent{position:relative;display:inline-block}

/* ---- 2. 数据条：仪表读数感 ---- */
.stats{padding:44px 0}
.stats__num{
  font-size:clamp(40px,3.5vw,52px);
  font-weight:600;letter-spacing:-.045em;line-height:1.1;
}
.stats__label{font-size:13px;letter-spacing:.04em}
.stats__item{padding-top:24px}

/* ---- 3. 六业务：非对称版面 ---- */
.svc-grid{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));
  gap:20px;
}
.svc-grid .card--hero,
.svc-grid .card--wide{grid-column:1 / -1}

/* 3.1 主卡：01 品牌官网建设 */
.card--hero{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(280px,340px);
  gap:clamp(28px,4vw,56px);align-items:center;
  padding:clamp(28px,3.2vw,44px);
}
.card__hero-copy{display:flex;flex-direction:column;gap:16px;align-items:flex-start}
.card--hero .card__title{font-size:clamp(26px,2.4vw,32px)}
.card--hero .card__desc{max-width:48ch}

/* 主卡内的迷你线框示意 */
.wire{
  border:1px solid var(--line-strong);border-radius:var(--radius);
  background:rgba(11,17,22,.55);overflow:hidden;
  transition:border-color .3s ease,transform .5s cubic-bezier(.16,1,.3,1);
}
.card--hero:hover .wire{border-color:rgba(76,201,216,.45);transform:translateY(-2px)}
.wire__bar{
  display:flex;align-items:center;gap:6px;padding:9px 12px;
  border-bottom:1px solid var(--line);background:rgba(76,201,216,.045);
}
.wire__bar i{width:5px;height:5px;border-radius:50%;border:1px solid rgba(76,201,216,.55);flex-shrink:0}
.wire__url{
  margin-left:8px;font-family:var(--font-mono);font-size:9px;letter-spacing:.05em;
  color:rgba(154,170,182,.62);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.wire__body{padding:16px;display:flex;flex-direction:column;gap:8px}
.wire__banner{
  display:block;height:clamp(64px,7vw,92px);
  border:1px solid rgba(76,201,216,.34);
  background:linear-gradient(118deg,rgba(76,201,216,.16),rgba(76,201,216,.02) 72%);
}
.w-line{display:block;height:4px;background:rgba(76,201,216,.20)}
.w-line--70{width:70%}
.w-line--45{width:45%}
.wire__cols{display:grid;grid-template-columns:repeat(3,1fr);gap:7px;margin-top:2px}
.wire__cols i{display:block;height:28px;border:1px solid rgba(76,201,216,.20)}

/* 3.2 宽卡：06 企业邮箱服务 */
.card--wide{
  display:grid;grid-template-columns:auto minmax(0,1fr) auto;
  gap:clamp(20px,2.6vw,36px);align-items:center;
  padding:clamp(24px,2.6vw,34px) clamp(24px,3vw,40px);
}
.card--wide .card__icon{position:static;margin:0;flex-shrink:0}
.card__wide-copy{display:flex;flex-direction:column;gap:9px;align-items:flex-start}
.card--wide .card__desc{max-width:60ch}
.card--wide .card__link{margin-top:2px}
.card__brands{display:grid;grid-template-columns:repeat(2,minmax(70px,1fr));gap:8px}
.card__brands span{
  display:flex;align-items:center;justify-content:center;height:34px;padding:0 14px;
  border:1px solid var(--line-strong);border-radius:var(--radius);
  font-size:12.5px;letter-spacing:.06em;color:var(--muted);
  transition:border-color .2s ease,color .2s ease,background-color .2s ease;
}
.card--wide:hover .card__brands span{border-color:rgba(76,201,216,.30)}
.card__brands span:hover{border-color:rgba(76,201,216,.65);color:var(--accent);background:rgba(76,201,216,.07)}

/* ---- 4. Why：编辑式双栏 ---- */
.why-layout{
  display:grid;grid-template-columns:minmax(0,380px) minmax(0,1fr);
  gap:clamp(40px,6vw,96px);align-items:center;
}
.why-lead{display:flex;flex-direction:column;gap:22px}
.why-lead .h2{font-size:clamp(28px,3vw,44px);line-height:1.18;margin-top:0}
.why-lead p{font-size:15px;line-height:1.85;color:var(--muted);max-width:34ch}
.why-lead::after{
  content:"";display:block;width:64px;height:1px;margin-top:4px;
  background:linear-gradient(90deg,var(--accent),transparent);
}
.why-list{display:flex;flex-direction:column}
.why-item{
  position:relative;display:grid;grid-template-columns:56px minmax(0,1fr);gap:24px;
  padding:30px 0 30px 4px;border-top:1px solid var(--line);
  transition:padding-left .35s cubic-bezier(.16,1,.3,1);
}
.why-item:last-child{border-bottom:1px solid var(--line)}
.why-item::before{
  content:"";position:absolute;left:-1px;top:0;bottom:0;width:2px;z-index:1;
  background:var(--accent);box-shadow:0 0 16px rgba(76,201,216,.65);
  transform:scaleY(0);transform-origin:top center;
  transition:transform .38s cubic-bezier(.16,1,.3,1);
}
.why-item:hover::before{transform:scaleY(1)}
.why-item:hover{padding-left:24px}
.why-item__no{
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.16em;
  color:rgba(76,201,216,.62);padding-top:7px;
}
.why-item__body h3{font-size:clamp(19px,1.6vw,23px);font-weight:600;letter-spacing:-.012em;line-height:1.4}
.why-item__body p{margin-top:10px;font-size:14.5px;line-height:1.82;color:var(--muted);max-width:58ch}

/* ---- 5. 交付流程：横轴时间线 ---- */
.section--process{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.process{
  display:grid;grid-template-columns:repeat(5,minmax(0,1fr));
  gap:0;position:relative;
}
.process::before{
  content:"";position:absolute;left:0;right:calc(20% - 7px);top:39.5px;height:1px;pointer-events:none;
  background:linear-gradient(90deg,rgba(76,201,216,.62),rgba(76,201,216,.34) 55%,rgba(76,201,216,.20));
}
.process__step{
  position:relative;display:flex;flex-direction:column;
  padding:0 clamp(14px,1.6vw,26px) 0 0;
}
.process__no{font-family:var(--font-mono);font-size:11px;line-height:14px;height:14px;letter-spacing:.18em;color:rgba(76,201,216,.58)}
.process__dot{
  position:relative;width:15px;height:15px;margin:17px 0 24px;
  border:1px solid rgba(76,201,216,.78);border-radius:50%;
  background:var(--surface);flex-shrink:0;
}
.process__dot::after{
  content:"";position:absolute;inset:4px;border-radius:50%;background:var(--accent);
  opacity:.92;transition:opacity .25s ease,transform .3s ease;
}
.process__step:hover .process__dot::after{opacity:1;transform:scale(1.15)}
.process__step:hover .process__dot{box-shadow:0 0 0 5px rgba(76,201,216,.10)}
.process__title{font-size:clamp(17px,1.35vw,19px);font-weight:600;letter-spacing:-.008em;line-height:1.4}
.process__desc{margin:11px 0 18px;font-size:13.5px;line-height:1.78;color:var(--muted)}
.process__out{
  margin:auto 0 0;padding-top:12px;border-top:1px dashed rgba(76,201,216,.22);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.04em;color:rgba(76,201,216,.72);
}

/* ---- 6. 场景行：序号降噪，标题立住 ---- */
.data-row{padding:30px 32px}
.data-row__no{font-size:clamp(24px,2vw,30px);letter-spacing:-.03em}

/* ---- 7. 响应式 ---- */
@media (max-width:1100px){
  .why-layout{grid-template-columns:minmax(0,1fr);gap:36px}
  .why-lead{position:static}
  .why-lead .h2 br{display:none}
  .card--hero{grid-template-columns:minmax(0,1fr);gap:28px}
  .wire{max-width:420px}
}
@media (max-width:900px){
  .process{grid-template-columns:repeat(2,minmax(0,1fr));gap:36px 0}
  .process::before{display:none}
  .process__step{padding-right:20px}
  .card--wide{grid-template-columns:auto minmax(0,1fr);row-gap:20px}
  .card__brands{grid-column:1 / -1;grid-template-columns:repeat(4,minmax(0,1fr))}
}
@media (max-width:768px){
  .svc-grid{grid-template-columns:minmax(0,1fr);gap:14px}
  .card--hero,.card--wide{grid-column:auto}
  .card--wide{grid-template-columns:minmax(0,1fr);gap:18px}
  .card--wide .card__icon{position:absolute;right:24px;top:22px}
  .card__brands{grid-template-columns:repeat(2,minmax(0,1fr))}
  .process{grid-template-columns:minmax(0,1fr);gap:0;padding-left:26px;border-left:1px solid var(--line)}
  .process__step{padding:0 0 26px}
  .process__dot{position:absolute;left:-33px;top:20px;margin:0}
  .process__step:last-child{padding-bottom:0}
  .why-item{grid-template-columns:40px minmax(0,1fr);gap:16px;padding:24px 0}
  .why-item:hover{padding-left:0}
  .stats__num{font-size:38px}
  .hero__figure--matrix{aspect-ratio:auto;height:clamp(300px,62vw,420px)}
}
@media (max-width:420px){
  .card__brands{grid-template-columns:repeat(2,minmax(0,1fr))}
  .process{padding-left:22px}
  .process__dot{left:-29px}
}

/* ---- 8. 减少动效 ---- */
@media (prefers-reduced-motion: reduce){
  .card--hero:hover .wire{transform:none}
  .why-item:hover{padding-left:4px}
  .why-item::before{transform:scaleY(1);opacity:.4}
}


/* ---- 9. 移动端专项修正（v5 结构在窄屏的收口） ---- */
@media (max-width:768px){
  /* 9.1 坐标角标与雷达图底部标签重叠，窄屏隐去 */
  .hud-coord{display:none!important}

  /* 9.2 数据条改两列，避免单列吃掉整屏 */
  .stats__grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:0 24px}
  .stats__item{padding:18px 0;border-left:0;border-bottom:1px solid var(--line)}
  .stats__item:nth-child(1),.stats__item:nth-child(2){border-bottom:1px solid var(--line)}
  .stats__item:nth-child(3),.stats__item:nth-child(4){border-bottom:0;padding-bottom:4px}
  .stats__num{font-size:33px;letter-spacing:-.03em}
  .stats__label{font-size:12.5px}
  .stats__item::after{display:none}

  /* 9.3 首屏按钮撑满，避免两枚按钮宽度参差 */
  .hero__copy{align-items:stretch}
  .hero__copy .h1,.hero__copy .body-lg,.hero__copy .hero__meta{align-self:flex-start}
  .btn-row{width:100%}
  .btn-row .btn{width:100%}

  /* 9.4 主卡线框图收紧，别喧宾夺主 */
  .wire{max-width:none}
  .wire__banner{height:52px}
  .wire__cols i{height:18px}
  .wire__body{padding:12px;gap:6px}
}
@media (max-width:420px){
  .stats__grid{gap:0 16px}
  .stats__num{font-size:29px}
  .hero__copy .h1{font-size:clamp(30px,9vw,38px)}
}


/* ---- 10. 服务页手风琴：左侧光条 + 展开态强化 ---- */
.acc{position:relative;transition:background-color .25s ease}
.acc::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:2px;z-index:1;pointer-events:none;
  background:var(--accent);box-shadow:0 0 14px rgba(76,201,216,.55);
  transform:scaleY(0);transform-origin:top center;
  transition:transform .32s cubic-bezier(.16,1,.3,1),opacity .25s ease;
}
.acc:hover{background:rgba(76,201,216,.022)}
.acc:hover::before{transform:scaleY(1);opacity:.45}
.acc[open]::before{transform:scaleY(1);opacity:1}
.acc__summary{padding:22px 4px 22px 20px}
.acc__info{padding-left:clamp(44px,4.4vw,52px);line-height:2}
@media (max-width:768px){
  .acc__summary{padding:18px 2px 18px 14px}
  .acc__info{padding-left:14px;padding-bottom:22px;font-size:14.5px;line-height:1.9}
}
@media (prefers-reduced-motion: reduce){
  .acc::before{transition:none}
}


/* ---- 11. 规范页：版面构件展示 ---- */
.guide-patterns{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));
  gap:clamp(28px,4vw,56px);margin-top:56px;align-items:start;
}
.guide-patterns__col{display:flex;flex-direction:column;gap:18px}
.guide-patterns__fig{
  width:100%;height:auto;display:block;border:1px solid var(--line-strong);
  border-radius:var(--radius);background:var(--surface);padding:10px;
}
.guide-patterns .note{max-width:46ch;line-height:1.85}
.guide-patterns .note strong{color:var(--text);font-weight:500}
.guide-patterns .why-item:first-child{border-top:1px solid var(--line)}
@media (max-width:900px){
  .guide-patterns{grid-template-columns:minmax(0,1fr);gap:36px}
}


/* ---- 12. 动效补充：标题光带 + 流程节点依次点亮 ---- */
/* 12.1 首屏标题关键词：下方一道由左向右展开的光带 */
.hero__copy .h1 .accent::after{
  content:"";position:absolute;left:0;bottom:.055em;height:2px;width:100%;
  background:linear-gradient(90deg,rgba(76,201,216,0),#8FE7F2 16%,#8FE7F2 58%,rgba(76,201,216,.35) 84%,rgba(76,201,216,0));
  transform:scaleX(0);transform-origin:left center;pointer-events:none;
}
.js-fx .hero__copy .h1 .accent::after{
  animation:fx-title-rule 1.05s cubic-bezier(.16,1,.3,1) 1.05s both;
}
@keyframes fx-title-rule{from{transform:scaleX(0);opacity:0}to{transform:scaleX(1);opacity:1}}

/* 12.2 交付流程：连线自左向右绘制，节点依次点亮 */
.js-motion .process.reveal::before{transform:scaleX(0);transform-origin:left center}
.js-motion .process.reveal.is-visible::before{
  transform:scaleX(1);
  transition:transform 1.15s cubic-bezier(.16,1,.3,1) .22s;
}
.js-motion .process.reveal .process__dot{opacity:0;transform:scale(.35)}
.js-motion .process.reveal.is-visible .process__dot{
  animation:fx-dot-in .58s cubic-bezier(.16,1,.3,1) both;
}
.js-motion .process.reveal.is-visible .process__step:nth-child(1) .process__dot{animation-delay:.26s}
.js-motion .process.reveal.is-visible .process__step:nth-child(2) .process__dot{animation-delay:.44s}
.js-motion .process.reveal.is-visible .process__step:nth-child(3) .process__dot{animation-delay:.62s}
.js-motion .process.reveal.is-visible .process__step:nth-child(4) .process__dot{animation-delay:.80s}
.js-motion .process.reveal.is-visible .process__step:nth-child(5) .process__dot{animation-delay:.98s}
@keyframes fx-dot-in{from{opacity:0;transform:scale(.35)}to{opacity:1;transform:none}}

.js-motion .process__dot::before{
  content:"";position:absolute;inset:-1px;border-radius:50%;
  border:1px solid rgba(143,231,242,.9);opacity:0;pointer-events:none;
}
.js-motion .process.reveal.is-visible .process__step:nth-child(1) .process__dot::before{animation:fx-ripple .95s ease-out .26s both}
.js-motion .process.reveal.is-visible .process__step:nth-child(2) .process__dot::before{animation:fx-ripple .95s ease-out .44s both}
.js-motion .process.reveal.is-visible .process__step:nth-child(3) .process__dot::before{animation:fx-ripple .95s ease-out .62s both}
.js-motion .process.reveal.is-visible .process__step:nth-child(4) .process__dot::before{animation:fx-ripple .95s ease-out .80s both}
.js-motion .process.reveal.is-visible .process__step:nth-child(5) .process__dot::before{animation:fx-ripple .95s ease-out .98s both}
@keyframes fx-ripple{0%{opacity:.85;transform:scale(1)}100%{opacity:0;transform:scale(3.2)}}

@media (prefers-reduced-motion: reduce){
  .js-fx .hero__copy .h1 .accent::after{animation:none;transform:scaleX(1)}
  .js-motion .process.reveal::before{transform:none}
  .js-motion .process.reveal .process__dot{opacity:1;transform:none}
}

/* =========================================================
   12. 统一图标体系（fzy-icons.svg 雪碧图）+ 服务场景画廊 + 折叠项图标
   ========================================================= */
.fzy-ico{width:22px;height:22px;flex:none;fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}

/* —— 服务场景画廊 —— */
.scene-gallery{position:relative}
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.scene-card{display:block;position:relative;margin:0;border-radius:12px;overflow:hidden;border:1px solid var(--line);
  background:var(--surface);aspect-ratio:4/3;box-shadow:0 18px 50px -30px rgba(0,0,0,.9);transition:border-color .3s ease,box-shadow .4s ease,transform .4s cubic-bezier(.16,1,.3,1)}
.scene-card img{width:100%;height:100%;object-fit:cover;filter:saturate(.92) brightness(.8) contrast(1.02);
  transition:transform .6s cubic-bezier(.16,1,.3,1),filter .45s ease}
.scene-card::after{content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(to top,rgba(7,11,15,.94) 4%,rgba(7,11,15,.4) 44%,rgba(7,11,15,.04) 72%)}
.scene-card::before{content:"";position:absolute;inset:0;z-index:1;pointer-events:none;opacity:0;
  background:radial-gradient(120% 120% at 50% 0%,rgba(76,201,216,.16),transparent 60%);transition:opacity .4s ease}
.scene-card__no{position:absolute;top:14px;left:16px;z-index:2;font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;color:rgba(234,253,255,.72)}
.scene-card__cap{position:absolute;left:16px;right:16px;bottom:14px;z-index:2}
.scene-card__title{display:block;font-size:17px;font-weight:600;color:#EAFDFF;letter-spacing:-.01em}
.scene-card__desc{display:block;margin-top:5px;font-size:13px;line-height:1.62;color:rgba(242,246,248,.74)}
.scene-card:hover{border-color:rgba(76,201,216,.5);transform:translateY(-4px);box-shadow:0 26px 60px -28px rgba(0,0,0,.95)}
.scene-card:hover img{transform:scale(1.06);filter:saturate(1) brightness(.92) contrast(1.04)}
.scene-card:hover::before{opacity:1}
@media (max-width:900px){.scene-grid{grid-template-columns:repeat(2,1fr);gap:16px}}
@media (max-width:560px){.scene-grid{grid-template-columns:1fr}}

/* —— 折叠项（服务页）图标 —— */
.acc__icon{flex:none;width:30px;height:30px;display:grid;place-items:center;border:1px solid var(--line-strong);
  border-radius:9px;color:var(--accent);background:var(--accent-faint);transition:border-color .3s ease,background-color .3s ease}
.acc__icon .fzy-ico{width:18px;height:18px}
.acc[open] > .acc__summary .acc__icon{border-color:rgba(76,201,216,.55);background:rgba(76,201,216,.14)}
/* 让 summary 内的图标与标题间距自然 */
.acc__summary{gap:18px}

/* —— 文章卡（列表 / 首页最新）分类图标 —— */
.insight-card__ico{flex:none;width:26px;height:26px;display:grid;place-items:center;border:1px solid var(--line-strong);
  border-radius:8px;color:var(--accent);background:var(--accent-faint)}
.insight-card__ico .fzy-ico{width:16px;height:16px}
.insight-card__top{display:flex;align-items:center;gap:10px}

/* =========================================================
   13. 业务详情页（services/ 子页）
   ========================================================= */
/* —— 业务线子导航 —— */
.biz-subnav{border-bottom:1px solid var(--line);background:rgba(11,17,22,.72);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);position:sticky;top:0;z-index:30}
.biz-subnav__inner{display:flex;flex-wrap:wrap;gap:6px;padding:12px 0}
.biz-subnav a{display:inline-flex;align-items:center;gap:8px;padding:7px 15px;border:1px solid transparent;border-radius:999px;font-size:13.5px;color:var(--muted);transition:color .2s ease,border-color .2s ease,background-color .2s ease}
.biz-subnav a .fzy-ico{width:16px;height:16px}
.biz-subnav a:hover{color:var(--text);border-color:var(--line-strong);background:var(--surface)}
.biz-subnav a.is-active{color:var(--accent);border-color:rgba(76,201,216,.5);background:var(--accent-faint)}

/* —— 业务 Hero —— */
.biz-hero{padding:64px 0 52px;position:relative;overflow:hidden}
.breadcrumb{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-size:13px;color:var(--muted);margin-bottom:24px}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb [aria-current="page"]{color:var(--text)}
.breadcrumb span{opacity:.45}
.biz-hero__grid{display:grid;grid-template-columns:1.08fr .92fr;gap:56px;align-items:center}
.biz-hero h1{font-size:clamp(34px,5vw,58px);line-height:1.12;font-weight:700;letter-spacing:-.025em;margin:0}
.biz-hero__lead{margin-top:22px;font-size:17px;line-height:1.8;color:var(--muted);max-width:54ch}
.biz-hero__meta{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.biz-meta{display:flex;flex-direction:column;gap:5px;padding:14px 18px;border:1px solid var(--line);border-radius:10px;background:var(--surface);min-width:150px}
.biz-meta__k{font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;color:var(--accent);text-transform:uppercase}
.biz-meta__v{font-size:14px;color:var(--text);font-weight:500;line-height:1.5}
.biz-hero__media{position:relative;border-radius:14px;overflow:hidden;border:1px solid var(--line);aspect-ratio:4/3;box-shadow:0 24px 70px -34px rgba(0,0,0,.95)}
.biz-hero__media img{width:100%;height:100%;object-fit:cover;filter:saturate(.94) brightness(.82) contrast(1.03)}
.biz-hero__media::after{content:"";position:absolute;inset:0;background:linear-gradient(to top,rgba(7,11,15,.92) 2%,rgba(7,11,15,.3) 46%,rgba(7,11,15,.04) 74%)}
.biz-hero__media-no{position:absolute;top:16px;left:18px;z-index:2;font-family:var(--font-mono);font-size:13px;letter-spacing:.14em;color:rgba(234,253,255,.72)}
.biz-hero__media-cap{position:absolute;left:18px;right:18px;bottom:16px;z-index:2}
.biz-hero__media-cap b{display:block;font-size:20px;font-weight:600;color:#EAFDFF;letter-spacing:-.01em}
.biz-hero__media-cap span{display:block;margin-top:5px;font-size:13px;line-height:1.6;color:rgba(242,246,248,.72)}

/* —— 能力清单 —— */
.feature-list{display:grid;gap:14px;margin-top:8px}
.feature-list__item{display:flex;gap:16px;padding:22px;border:1px solid var(--line);border-radius:12px;background:var(--surface);transition:border-color .25s ease,background-color .25s ease,transform .25s ease}
.feature-list__item:hover{border-color:rgba(76,201,216,.45);background:var(--surface-hover);transform:translateX(4px)}
.feature-list__ico{flex:none;width:44px;height:44px;display:grid;place-items:center;border:1px solid var(--line-strong);border-radius:10px;color:var(--accent);background:var(--accent-faint)}
.feature-list__ico .fzy-ico{width:22px;height:22px}
.feature-list__body h3{font-size:17px;font-weight:600;margin-bottom:6px}
.feature-list__body p{font-size:14px;line-height:1.8;color:var(--muted)}

/* —— 适用对象 —— */
.audience{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.audience__col{border:1px solid var(--line);border-radius:12px;padding:28px;background:var(--surface)}
.audience__col h3{display:flex;align-items:center;gap:10px;font-size:18px;margin-bottom:16px}
.audience__col--no{border-color:rgba(255,120,120,.28);background:rgba(255,90,90,.05)}
.audience__col ul{display:flex;flex-direction:column;gap:12px}
.audience__col li{display:flex;gap:10px;font-size:14px;line-height:1.7;color:var(--muted)}
.audience__col li::before{content:"";flex:none;width:6px;height:6px;margin-top:9px;border-radius:50%;background:var(--accent)}
.audience__col--no li::before{background:#FF8C8C}

/* —— 交付步骤（本页） —— */
.biz-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.biz-step{border:1px solid var(--line);border-radius:12px;padding:22px;background:var(--surface);position:relative;overflow:hidden}
.biz-step::before{content:"";position:absolute;left:0;top:0;width:100%;height:2px;background:linear-gradient(to right,var(--accent),transparent)}
.biz-step__no{font-family:var(--font-mono);font-size:12px;letter-spacing:.1em;color:var(--accent)}
.biz-step h3{font-size:17px;font-weight:600;margin:10px 0 8px}
.biz-step p{font-size:13.5px;line-height:1.75;color:var(--muted)}

/* —— 延伸阅读卡 —— */
.rel-card .card__title{font-size:19px}
.rel-card .card__desc{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

@media (max-width:900px){
  .biz-hero__grid{grid-template-columns:1fr;gap:36px}
  .biz-hero__media{order:-1}
  .audience,.biz-steps{grid-template-columns:1fr}
  .biz-steps{grid-template-columns:1fr 1fr}
}
@media (max-width:560px){
  .biz-steps{grid-template-columns:1fr}
  .biz-subnav a{padding:6px 11px;font-size:12.5px}
  .biz-meta{min-width:calc(50% - 6px)}
}

/* —— 服务页折叠项：业务详情入口 —— */
.acc__more{margin-top:18px}
.acc__body .btn--sm{height:38px;padding:0 20px;font-size:13px}
.acc__body .btn--outline{color:var(--accent);border-color:rgba(76,201,216,.5)}

/* =============================================================
   13. UI 精修 v5 —— 统一几何 / 深度光感 / 动效手感
   ============================================================= */
:root{
  --r-btn:8px;
  --r-chip:8px;
  --r-md:10px;
  --r-card:14px;
  --r-media:16px;
  --r-ico:10px;
  --ease:cubic-bezier(.16,1,.3,1);
  --shadow-card:0 18px 44px -30px rgba(0,0,0,.82);
  --shadow-card-hover:0 30px 60px -28px rgba(0,0,0,.9),0 0 0 1px rgba(76,201,216,.14);
  --shadow-glow:0 16px 34px -14px rgba(76,201,216,.5);
}

/* ---- 13.1 排版节奏 ---- */
.h1,.h2,.h3,.hero__copy .h1,.section-head h2,.section-head h3,.cta .h2,.biz-hero h1{text-wrap:balance}
.hero__copy .h1{line-height:1.14;letter-spacing:-.028em}
.section-head h2,.page-head .h1{text-wrap:balance}
.section-head{margin-bottom:56px}
.section-head p{text-wrap:pretty}

/* ---- 13.2 按钮：统一圆角 + 悬停浮起与辉光 ---- */
.btn{border-radius:var(--r-btn);transition:transform .3s var(--ease),box-shadow .3s var(--ease),background-color .2s ease,color .2s ease,border-color .2s ease}
.btn:hover{transform:translateY(-2px)}
.btn--primary:hover{box-shadow:var(--shadow-glow)}
.btn--outline:hover{box-shadow:0 12px 26px -16px rgba(76,201,216,.5);border-color:var(--accent)}
.btn--dark:hover{box-shadow:0 14px 30px -16px rgba(0,0,0,.6)}
.btn--arrow::after{transition:transform .3s var(--ease)}
.btn--arrow:hover::after{transform:translateX(6px)}
.btn:active{transform:translateY(0)}
.btn:focus-visible{outline-offset:3px}
.btn--sm{border-radius:calc(var(--r-btn) - 1px)}

/* ---- 13.3 卡片：柔和深度 + 顶部高光 + 悬停辉光 ---- */
.card{
  border-radius:var(--r-card);
  box-shadow:var(--shadow-card);
  transition:border-color .3s var(--ease),background-color .3s var(--ease),transform .3s var(--ease),box-shadow .3s var(--ease);
}
.card::before{height:1px;opacity:.42;background:linear-gradient(90deg,rgba(76,201,216,.95),rgba(76,201,216,.25) 42%,transparent 78%)}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow-card-hover)}
.card--plain{box-shadow:none}
.card--plain:hover{box-shadow:none}
.card__icon{border-radius:var(--r-ico);width:48px;height:48px}
.card__icon svg{width:25px;height:25px}
.card__link{gap:6px}

/* ---- 13.4 首屏与媒体框：更深的景深 ---- */
.hero__figure,.split__figure{border-radius:var(--r-media);box-shadow:0 34px 70px -40px rgba(0,0,0,.9)}
.hero__figure::after{opacity:.9}
.figcap{gap:14px}

/* ---- 13.5 数据条 / 编号行 / FAQ ---- */
.stats{border-radius:0}
.data-row,.compare-row{border-radius:var(--r-md,10px)}
.faq-item{border-radius:var(--r-card);transition:border-color .3s var(--ease),background-color .3s var(--ease),box-shadow .3s var(--ease)}
.faq-item:hover{box-shadow:var(--shadow-card)}

/* ---- 13.6 折叠项（服务页：堆叠列表式，用底部浅底与左侧强调条） ---- */
.acc{transition:background-color .28s var(--ease)}
.acc:hover{background:rgba(76,201,216,.035);box-shadow:inset 2px 0 0 rgba(76,201,216,.55)}
.acc[open]{background:linear-gradient(180deg,rgba(76,201,216,.055),rgba(76,201,216,0) 46%);box-shadow:inset 2px 0 0 var(--accent)}
.acc__icon{border-radius:var(--r-ico)}
.acc__more .btn--outline{border-radius:var(--r-btn)}
.acc__body .btn--outline:hover{border-color:var(--accent);box-shadow:0 12px 26px -16px rgba(76,201,216,.5)}

/* ---- 13.7 服务场景画廊 ---- */
.scene-card{border-radius:var(--r-media);box-shadow:var(--shadow-card);transition:transform .4s var(--ease),box-shadow .4s var(--ease),border-color .3s var(--ease)}
.scene-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-card-hover)}
.scene-card img{transition:transform .6s var(--ease)}

/* ---- 13.8 联系页 / 微信卡 / 业务页组件 ---- */
.info-card{border-radius:var(--r-card)}
.wx-card{border-radius:var(--r-card);box-shadow:var(--shadow-card);transition:border-color .3s var(--ease),box-shadow .3s var(--ease)}
.wx-card:hover{border-color:rgba(76,201,216,.4);box-shadow:var(--shadow-card-hover)}
.wx-card__qr{border-radius:var(--r-ico)}
.biz-subnav a{border-radius:var(--r-chip);transition:border-color .25s ease,color .25s ease,background-color .25s ease}
.biz-subnav a:hover{border-color:rgba(76,201,216,.45);color:var(--text)}
.feature-list__ico{border-radius:var(--r-ico)}
.biz-step{border-radius:var(--r-card);box-shadow:var(--shadow-card);transition:border-color .3s var(--ease),transform .3s var(--ease),box-shadow .3s var(--ease)}
.biz-step:hover{transform:translateY(-4px);border-color:rgba(76,201,216,.4);box-shadow:var(--shadow-card-hover)}
.biz-meta{border-radius:var(--r-card)}
.biz-hero__media{border-radius:var(--r-media);box-shadow:0 34px 70px -40px rgba(0,0,0,.9)}

/* ---- 13.9 列表卡（文章） ---- */
.insight-card{border-radius:var(--r-card);box-shadow:var(--shadow-card);transition:border-color .3s var(--ease),transform .3s var(--ease),box-shadow .3s var(--ease)}
.insight-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-card-hover)}
.insight-card__ico{border-radius:var(--r-ico)}
.insight-card__cat{border-radius:var(--r-chip)}

/* ---- 13.10 导航：激活态更精致 ---- */
.nav__links a{transition:color .2s ease}
.nav__links a.is-active::after{
  height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--accent),rgba(76,201,216,.35));
  box-shadow:0 0 12px rgba(76,201,216,.5);
}
.site-header.is-scrolled{box-shadow:0 12px 30px -22px rgba(0,0,0,.9)}
.nav-mobile__panel{border-radius:var(--r-card);box-shadow:var(--shadow-card)}
.nav-mobile summary{border-radius:var(--r-chip)}

/* ---- 13.11 全局细节：滚动条 / 选区 / 锚点偏移 ---- */
html{scrollbar-color:#2b3d49 var(--bg);scrollbar-width:thin}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:var(--bg)}
::-webkit-scrollbar-thumb{background:linear-gradient(180deg,#2e434f,#22323c);border-radius:20px;border:2px solid var(--bg)}
::-webkit-scrollbar-thumb:hover{background:linear-gradient(180deg,#3a5764,#2a3d49)}
::selection{background:rgba(76,201,216,.28);color:#EAFDFF}
section[id],.section[id],h2[id],h3[id]{scroll-margin-top:104px}
.to-top{border-radius:var(--r-chip)}

/* ---- 13.12 动效尊重系统设置 ---- */
@media (prefers-reduced-motion: reduce){
  .btn,.card,.scene-card,.insight-card,.biz-step,.wx-card,.faq-item,.acc{transition:none!important}
  .btn:hover,.card:hover,.scene-card:hover,.insight-card:hover,.biz-step:hover{transform:none}
}

/* ---- 13.13 移动端：收紧圆角与阴影强度 ---- */
@media (max-width:720px){
  :root{--r-card:12px;--r-media:14px}
  .card:hover,.scene-card:hover,.insight-card:hover,.biz-step:hover{transform:none}
}

/* ---- 13.14 一致性收口：芯片/标签圆角 + 分区辉光线 ---- */
.status-chip,.tag-list span,.tag-list a,.guide-nav a{border-radius:var(--r-chip)}
.to-top:hover{box-shadow:0 0 22px -6px rgba(76,201,216,.5)}
.section--surface,.section--surface-2{position:relative}
.section--surface::before,.section--surface-2::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;pointer-events:none;
  background:linear-gradient(90deg,transparent,rgba(76,201,216,.34) 28%,rgba(76,201,216,.10) 72%,transparent);
}