/* ============================================================
   艺景智能 · 8kvr.cn
   自建样式表 · 无外部依赖
   设计基准：1440 桌面 / 390 移动
   ============================================================ */

/* ---------- 1. 设计变量 ---------- */
:root{
  --ink:        #0d1b2a;
  --ink-2:      #24384f;
  --muted:      #5c6f85;
  --muted-2:    #8496a9;
  --line:       #e3e9f0;
  --line-2:     #eef2f7;

  --bg:         #ffffff;
  --bg-soft:    #f6f8fb;
  --bg-dark:    #0a1421;
  --bg-dark-2:  #101f33;

  --brand:      #1668c1;
  --brand-dk:   #0f4f95;
  --brand-lt:   #e8f1fb;
  --accent:     #f2760c;
  --accent-dk:  #d96504;
  --accent-lt:  #fef3e7;
  --teal:       #0e9f8f;
  --teal-lt:    #e6f7f4;

  --r-sm: 6px;
  --r:    10px;
  --r-lg: 16px;
  --r-xl: 22px;

  --sh-sm: 0 1px 2px rgba(13,27,42,.06), 0 1px 3px rgba(13,27,42,.04);
  --sh:    0 4px 12px rgba(13,27,42,.07), 0 1px 3px rgba(13,27,42,.05);
  --sh-lg: 0 16px 40px -12px rgba(13,27,42,.18), 0 4px 12px rgba(13,27,42,.06);

  --nav-h: 68px;
  --ease:  cubic-bezier(.4,0,.2,1);
}

/* ---------- 2. 重置 ---------- */
*,*::before,*::after{ box-sizing:border-box; }
html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth; }
body{
  margin:0; background:var(--bg); color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  font-size:16px; line-height:1.75; -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img,svg{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
button,input,textarea,select{ font:inherit; color:inherit; }
ul,ol{ margin:0; padding:0; list-style:none; }
h1,h2,h3,h4,h5,p{ margin:0; }
:focus-visible{ outline:2px solid var(--brand); outline-offset:3px; border-radius:3px; }
::selection{ background:#cfe3f7; }

/* 锚点跳转不被固定导航遮挡 */
section[id],div[id].anchor{ scroll-margin-top: calc(var(--nav-h) + 16px); }

/* ---------- 3. 布局 ---------- */
.container{ width:100%; max-width:1200px; margin:0 auto; padding:0 24px; }
.container-sm{ max-width:900px; }
.section{ padding:84px 0; }
.section--soft{ background:var(--bg-soft); }
.section--tight{ padding:56px 0; }
@media(max-width:768px){
  .section{ padding:56px 0; }
  .container{ padding:0 18px; }
}

/* ---------- 4. 排版 ---------- */
.eyebrow{
  display:inline-flex; align-items:center; gap:7px;
  font-size:12.5px; font-weight:700; letter-spacing:1.4px; text-transform:uppercase;
  color:var(--brand); margin-bottom:14px;
}
.eyebrow::before{ content:""; width:18px; height:2px; background:var(--accent); border-radius:1px; }
.section-head{ max-width:720px; margin-bottom:44px; }
.section-head--center{ margin-left:auto; margin-right:auto; text-align:center; }
.section-head--center .eyebrow{ justify-content:center; }
h1,h2,h3,h4{ line-height:1.28; font-weight:800; letter-spacing:-.02em; color:var(--ink); }
.h1{ font-size:clamp(1.9rem,4.6vw,3.35rem); line-height:1.16; }
.h2{ font-size:clamp(1.5rem,3vw,2.15rem); }
.h3{ font-size:1.24rem; }
.lead{ font-size:clamp(1rem,1.4vw,1.1rem); color:var(--muted); line-height:1.85; margin-top:16px; }
p.body{ color:var(--muted); line-height:1.9; }
.muted{ color:var(--muted); }
.small{ font-size:13.5px; }

/* ---------- 5. 按钮 ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  height:48px; padding:0 26px; border:1px solid transparent; border-radius:var(--r);
  font-size:15px; font-weight:700; cursor:pointer; white-space:nowrap;
  transition:background .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease), transform .15s var(--ease), box-shadow .2s var(--ease);
}
.btn:active{ transform:translateY(1px); }
.btn--primary{ background:var(--accent); color:#fff; box-shadow:0 6px 18px -6px rgba(242,118,12,.55); }
.btn--primary:hover{ background:var(--accent-dk); box-shadow:0 8px 22px -6px rgba(242,118,12,.6); }
.btn--brand{ background:var(--brand); color:#fff; }
.btn--brand:hover{ background:var(--brand-dk); }
.btn--ghost{ background:transparent; color:var(--ink); border-color:var(--line); }
.btn--ghost:hover{ border-color:var(--brand); color:var(--brand); background:var(--brand-lt); }
.btn--on-dark{ background:rgba(255,255,255,.09); color:#fff; border-color:rgba(255,255,255,.22); backdrop-filter:blur(4px); }
.btn--on-dark:hover{ background:rgba(255,255,255,.16); border-color:rgba(255,255,255,.38); }
.btn--sm{ height:40px; padding:0 18px; font-size:14px; }
.btn--block{ width:100%; }

/* 文字链接 */
.link-arrow{ display:inline-flex; align-items:center; gap:6px; font-weight:700; font-size:14.5px; color:var(--brand); }
.link-arrow svg{ width:15px; height:15px; transition:transform .2s var(--ease); }
.link-arrow:hover svg{ transform:translateX(4px); }

/* ---------- 6. 导航 ---------- */
.nav{
  position:fixed; inset:0 0 auto 0; height:var(--nav-h); z-index:100;
  background:rgba(255,255,255,.86); backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid transparent; transition:border-color .25s, box-shadow .25s, background .25s;
}
.nav.is-stuck{ border-bottom-color:var(--line); box-shadow:0 1px 12px rgba(13,27,42,.05); background:rgba(255,255,255,.95); }
.nav__inner{ height:100%; display:flex; align-items:center; gap:32px; }
.nav__logo{ display:flex; align-items:center; gap:10px; flex-shrink:0; }
.nav__logo svg{ width:34px; height:34px; }
.nav__logo b{ font-size:19px; font-weight:800; letter-spacing:-.02em; }
.nav__logo span{ font-size:10.5px; font-weight:600; color:var(--muted-2); letter-spacing:.16em; display:block; margin-top:-3px; }
.nav__menu{ display:flex; align-items:center; gap:2px; margin-left:auto; }
.nav__link{
  position:relative; display:block; padding:8px 13px; border-radius:var(--r-sm);
  font-size:14.5px; font-weight:600; color:var(--ink-2); transition:color .18s, background .18s;
}
.nav__link:hover{ color:var(--brand); background:var(--brand-lt); }
.nav__link.is-active{ color:var(--brand); }
.nav__link.is-active::after{
  content:""; position:absolute; left:13px; right:13px; bottom:1px; height:2px;
  background:var(--accent); border-radius:2px;
}
.nav__cta{ margin-left:14px; }

/* 下拉 */
.nav__drop{ position:relative; }
.nav__drop > .nav__link{ display:flex; align-items:center; gap:5px; cursor:pointer; }
.nav__drop > .nav__link svg{ width:11px; height:11px; transition:transform .22s var(--ease); opacity:.6; }
.nav__drop.is-open > .nav__link svg{ transform:rotate(180deg); }
.nav__panel{
  position:absolute; top:calc(100% + 10px); left:50%; transform:translate(-50%,-6px);
  width:300px; padding:8px; background:#fff; border:1px solid var(--line);
  border-radius:var(--r-lg); box-shadow:var(--sh-lg);
  opacity:0; visibility:hidden; transition:opacity .18s, transform .18s var(--ease), visibility .18s;
}
.nav__drop.is-open .nav__panel{ opacity:1; visibility:visible; transform:translate(-50%,0); }
.nav__panel a{
  display:flex; align-items:center; gap:11px; padding:10px 12px; border-radius:var(--r-sm);
  font-size:14px; font-weight:600; color:var(--ink-2); transition:background .15s, color .15s;
}
.nav__panel a:hover{ background:var(--bg-soft); color:var(--brand); }
.nav__panel a i{ display:grid; place-items:center; width:30px; height:30px; border-radius:7px; background:var(--brand-lt); flex-shrink:0; }
.nav__panel a i svg{ width:16px; height:16px; }
.nav__panel a small{ display:block; font-size:11.5px; font-weight:500; color:var(--muted-2); margin-top:1px; }

/* 汉堡 */
.nav__toggle{
  display:none; width:42px; height:42px; margin-left:auto; padding:0;
  background:none; border:1px solid var(--line); border-radius:var(--r-sm); cursor:pointer;
  align-items:center; justify-content:center; flex-shrink:0;
}
.nav__toggle span{ display:block; width:18px; height:2px; background:var(--ink); border-radius:2px; position:relative; transition:background .2s; }
.nav__toggle span::before,.nav__toggle span::after{
  content:""; position:absolute; left:0; width:18px; height:2px; background:var(--ink); border-radius:2px; transition:transform .25s var(--ease);
}
.nav__toggle span::before{ top:-6px; } .nav__toggle span::after{ top:6px; }
.nav__toggle[aria-expanded="true"] span{ background:transparent; }
.nav__toggle[aria-expanded="true"] span::before{ transform:translateY(6px) rotate(45deg); }
.nav__toggle[aria-expanded="true"] span::after{ transform:translateY(-6px) rotate(-45deg); }

@media(max-width:980px){
  .nav__toggle{ display:flex; }
  .nav__menu{
    position:fixed; top:var(--nav-h); left:0; right:0; bottom:0;
    flex-direction:column; align-items:stretch; gap:2px; margin:0; padding:16px 18px 40px;
    background:#fff; border-top:1px solid var(--line); overflow-y:auto;
    opacity:0; visibility:hidden; transform:translateY(-8px); transition:opacity .22s, transform .22s var(--ease), visibility .22s;
  }
  .nav__menu.is-open{ opacity:1; visibility:visible; transform:translateY(0); }
  .nav__link{ padding:14px 12px; font-size:16px; border-radius:var(--r); }
  .nav__link.is-active::after{ display:none; }
  .nav__link.is-active{ background:var(--brand-lt); }
  .nav__cta{ margin:12px 0 0; }
  .nav__cta .btn{ width:100%; }
  .nav__drop > .nav__link{ justify-content:space-between; }
  .nav__panel{
    position:static; width:auto; transform:none; opacity:1; visibility:visible;
    box-shadow:none; border:none; background:var(--bg-soft); padding:6px; margin:4px 0 8px;
    display:none;
  }
  .nav__drop.is-open .nav__panel{ display:block; transform:none; }
}

/* ---------- 7. 首屏 ---------- */
.hero{
  position:relative; padding:calc(var(--nav-h) + 76px) 0 88px;
  background:var(--bg-dark); color:#fff; overflow:hidden;
}
.hero__grid{
  position:absolute; inset:0; pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(ellipse 85% 75% at 55% 30%,#000 40%,transparent 100%);
  -webkit-mask-image:radial-gradient(ellipse 85% 75% at 55% 30%,#000 40%,transparent 100%);
}
.hero__glow{ position:absolute; border-radius:50%; filter:blur(90px); pointer-events:none; }
.hero__glow--a{ width:520px; height:520px; top:-180px; right:-80px; background:rgba(22,104,193,.42); }
.hero__glow--b{ width:400px; height:400px; bottom:-160px; left:-100px; background:rgba(14,159,143,.24); }
.hero__inner{ position:relative; display:grid; grid-template-columns:1.02fr .98fr; gap:56px; align-items:center; }
.hero__badge{
  display:inline-flex; align-items:center; gap:8px; padding:6px 14px 6px 8px; margin-bottom:24px;
  background:rgba(255,255,255,.07); border:1px solid rgba(255,255,255,.14); border-radius:100px;
  font-size:13px; font-weight:600; color:#c7d7e8;
}
.hero__badge em{
  font-style:normal; padding:2px 9px; border-radius:100px; background:var(--accent);
  font-size:11.5px; font-weight:800; color:#fff; letter-spacing:.4px;
}
.hero h1{ color:#fff; font-size:clamp(1.95rem,4.2vw,3.2rem); line-height:1.18; letter-spacing:-.025em; }
.hero h1 .hl{ color:#67b3f5; }
.hero__sub{ margin-top:20px; font-size:clamp(.98rem,1.3vw,1.08rem); line-height:1.85; color:#9fb4ca; max-width:520px; }
.hero__actions{ display:flex; gap:12px; margin-top:34px; flex-wrap:wrap; }
.hero__trust{ display:flex; gap:28px; margin-top:44px; padding-top:26px; border-top:1px solid rgba(255,255,255,.1); flex-wrap:wrap; }
.hero__trust div{ font-size:13px; color:#8ba1b8; line-height:1.5; }
.hero__trust b{ display:block; font-size:22px; font-weight:800; color:#fff; letter-spacing:-.02em; }
.hero__art{ position:relative; }
.hero__art img{ width:100%; height:auto; filter:drop-shadow(0 24px 48px rgba(0,0,0,.45)); }

@media(max-width:980px){
  .hero{ padding:calc(var(--nav-h) + 48px) 0 60px; }
  .hero__inner{ grid-template-columns:1fr; gap:34px; }
  .hero__art{ max-width:330px; margin:8px auto 0; }
  .hero__sub{ max-width:none; }
  .hero__trust{ gap:20px; }
}

/* ---------- 8. 页面头（内页） ---------- */
.pagehead{
  padding:calc(var(--nav-h) + 52px) 0 52px;
  background:var(--bg-dark); color:#fff; position:relative; overflow:hidden;
}
.pagehead .hero__grid{ opacity:.7; }
.pagehead__inner{ position:relative; }
.pagehead h1{ color:#fff; font-size:clamp(1.7rem,3.4vw,2.6rem); }
.pagehead p{ margin-top:12px; color:#9fb4ca; font-size:1.02rem; max-width:660px; line-height:1.8; }
.crumb{ display:flex; align-items:center; gap:8px; font-size:13px; color:#7d93ab; margin-bottom:18px; flex-wrap:wrap; }
.crumb a:hover{ color:#fff; }
.crumb svg{ width:11px; height:11px; opacity:.5; }

/* ---------- 9. 卡片 ---------- */
.card{
  background:#fff; border:1px solid var(--line); border-radius:var(--r-lg);
  transition:border-color .22s, box-shadow .22s, transform .22s var(--ease);
  display:flex; flex-direction:column; overflow:hidden; height:100%;
}
.card:hover{ border-color:#c9d8e8; box-shadow:var(--sh-lg); transform:translateY(-3px); }
.card__media{
  position:relative; aspect-ratio:16/10; background:linear-gradient(160deg,#f2f7fc,#e6eef7);
  display:grid; place-items:center; overflow:hidden; border-bottom:1px solid var(--line-2);
}
.card__media img{ width:76%; height:auto; transition:transform .4s var(--ease); }
.card:hover .card__media img{ transform:scale(1.05) translateY(-2px); }
.card__body{ padding:20px 22px 22px; display:flex; flex-direction:column; flex:1; }
.card__body h3{ font-size:1.05rem; margin-bottom:8px; }
.card__body p{ font-size:13.8px; color:var(--muted); line-height:1.72; flex:1; }
.card__foot{ display:flex; align-items:center; justify-content:space-between; margin-top:18px; padding-top:14px; border-top:1px solid var(--line-2); }
.card__tag{ font-size:11.5px; font-weight:700; color:var(--brand); background:var(--brand-lt); padding:3px 9px; border-radius:5px; }
.card__more{ display:inline-flex; align-items:center; gap:4px; font-size:13.5px; font-weight:700; color:var(--ink-2); }
.card__more svg{ width:13px; height:13px; transition:transform .2s; }
.card:hover .card__more{ color:var(--accent); }
.card:hover .card__more svg{ transform:translateX(3px); }

/* 卡片包装成链接（整卡可点） */
a.card{ color:inherit; }

.grid{ display:grid; gap:24px; }
.grid--2{ grid-template-columns:repeat(2,1fr); }
.grid--3{ grid-template-columns:repeat(3,1fr); }
.grid--4{ grid-template-columns:repeat(4,1fr); }
@media(max-width:980px){ .grid--3,.grid--4{ grid-template-columns:repeat(2,1fr); } }
@media(max-width:640px){ .grid--2,.grid--3,.grid--4{ grid-template-columns:1fr; gap:18px; } }

/* ---------- 10. 特性格 ---------- */
.feature{ padding:26px 24px; background:#fff; border:1px solid var(--line); border-radius:var(--r-lg); }
.feature__ico{ width:44px; height:44px; border-radius:11px; display:grid; place-items:center; background:var(--brand-lt); margin-bottom:16px; }
.feature__ico svg{ width:22px; height:22px; }
.feature h3{ font-size:1.02rem; margin-bottom:8px; }
.feature p{ font-size:13.8px; color:var(--muted); line-height:1.72; }
.feature--teal .feature__ico{ background:var(--teal-lt); }
.feature--accent .feature__ico{ background:var(--accent-lt); }

/* ---------- 11. 步骤 ---------- */
.steps{ display:grid; grid-template-columns:repeat(3,1fr); gap:22px; counter-reset:s; }
@media(max-width:980px){ .steps{ grid-template-columns:repeat(2,1fr); } }
@media(max-width:640px){ .steps{ grid-template-columns:1fr; } }
.step{ position:relative; padding:24px 22px 22px; background:#fff; border:1px solid var(--line); border-radius:var(--r-lg); }
.step__n{
  width:34px; height:34px; border-radius:9px; display:grid; place-items:center; margin-bottom:14px;
  background:var(--ink); color:#fff; font-size:14px; font-weight:800; font-variant-numeric:tabular-nums;
}
.step:nth-child(1) .step__n{ background:var(--brand); }
.step:nth-child(6) .step__n{ background:var(--accent); }
.step h3{ font-size:1rem; margin-bottom:6px; }
.step p{ font-size:13.6px; color:var(--muted); line-height:1.7; }

/* ---------- 12. 数字条 ---------- */
.stats{ display:grid; grid-template-columns:repeat(4,1fr); gap:1px; background:var(--line); border:1px solid var(--line); border-radius:var(--r-lg); overflow:hidden; }
.stat{ background:#fff; padding:28px 22px; text-align:center; }
.stat b{ display:block; font-size:clamp(1.6rem,2.6vw,2.1rem); font-weight:800; color:var(--brand); letter-spacing:-.03em; font-variant-numeric:tabular-nums; }
.stat span{ display:block; font-size:13px; color:var(--muted); margin-top:4px; }
.stat b span{ display:inline; font-size:.56em; font-weight:800; margin-left:1px; }
@media(max-width:768px){ .stats{ grid-template-columns:repeat(2,1fr); } }

/* ---------- 13. 列表 ---------- */
.checklist{ display:grid; gap:12px; }
.checklist li{ position:relative; padding-left:30px; font-size:14.5px; color:var(--ink-2); line-height:1.7; }
.checklist li::before{
  content:""; position:absolute; left:0; top:.42em; width:17px; height:17px; border-radius:50%;
  background:var(--teal-lt) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%230e9f8f' stroke-width='3.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E") center/11px no-repeat;
}

/* ---------- 14. 参数表 ---------- */
.spec{ width:100%; border-collapse:collapse; font-size:14.5px; }
.spec caption{ text-align:left; font-size:13px; color:var(--muted); padding-bottom:12px; }
.spec th,.spec td{ padding:13px 16px; border-bottom:1px solid var(--line); text-align:left; vertical-align:top; }
.spec th{ width:34%; color:var(--muted); font-weight:600; background:var(--bg-soft); }
.spec td{ color:var(--ink-2); font-weight:600; }
.spec tr:first-child th,.spec tr:first-child td{ border-top:1px solid var(--line); }
.spec tr:last-child th,.spec tr:last-child td{ border-bottom:none; }
.spec-wrap{ border:1px solid var(--line); border-radius:var(--r-lg); overflow:hidden; }

/* ---------- 15. FAQ ---------- */
.faq{ border-top:1px solid var(--line); }
.faq details{ border-bottom:1px solid var(--line); }
.faq summary{
  display:flex; align-items:center; justify-content:space-between; gap:20px;
  padding:20px 4px; cursor:pointer; font-weight:700; font-size:15.5px; list-style:none;
  transition:color .18s;
}
.faq summary::-webkit-details-marker{ display:none; }
.faq summary:hover{ color:var(--brand); }
.faq summary::after{
  content:""; width:20px; height:20px; flex-shrink:0;
  background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%235c6f85' stroke-width='2.4' stroke-linecap='round'%3E%3Cline x1='12' y1='5' x2='12' y2='19'/%3E%3Cline x1='5' y1='12' x2='19' y2='12'/%3E%3C/svg%3E") center/18px no-repeat;
  transition:transform .22s var(--ease);
}
.faq details[open] summary::after{ transform:rotate(45deg); }
.faq details p{ padding:0 4px 22px; color:var(--muted); font-size:14.3px; line-height:1.85; max-width:820px; }

/* ---------- 16. 新闻 / 列表行 ---------- */
.postlist{ border-top:1px solid var(--line); }
.postlist a{
  display:grid; grid-template-columns:1fr auto; gap:20px; align-items:center;
  padding:22px 4px; border-bottom:1px solid var(--line); transition:background .16s, padding .18s;
}
.postlist a:hover{ background:var(--bg-soft); padding-left:14px; }
.postlist h3{ font-size:1rem; font-weight:700; margin-bottom:6px; transition:color .16s; }
.postlist a:hover h3{ color:var(--brand); }
.postlist p{ font-size:13.6px; color:var(--muted); line-height:1.7; max-width:760px; }
.postlist time{ font-size:13px; color:var(--muted-2); font-variant-numeric:tabular-nums; white-space:nowrap; }
@media(max-width:640px){
  .postlist a{ grid-template-columns:1fr; gap:8px; }
  .postlist time{ order:-1; }
}

/* ---------- 17. 表单 ---------- */
.form{ display:grid; gap:16px; }
.field label{ display:block; font-size:13.5px; font-weight:700; margin-bottom:7px; color:var(--ink-2); }
.field label em{ color:var(--accent); font-style:normal; margin-left:2px; }
.field input,.field textarea,.field select{
  width:100%; padding:12px 14px; background:#fff; border:1px solid var(--line);
  border-radius:var(--r); font-size:14.5px; color:var(--ink);
  transition:border-color .18s, box-shadow .18s;
}
.field textarea{ resize:vertical; min-height:118px; line-height:1.7; }
.field input::placeholder,.field textarea::placeholder{ color:#a9b7c6; }
.field input:focus,.field textarea:focus,.field select:focus{
  outline:none; border-color:var(--brand); box-shadow:0 0 0 3px rgba(22,104,193,.12);
}
.field input:user-invalid,.field textarea:user-invalid{ border-color:#e05252; }
.field__row{ display:grid; grid-template-columns:1fr 1fr; gap:16px; }
@media(max-width:560px){ .field__row{ grid-template-columns:1fr; } }
.form__note{ font-size:12.8px; color:var(--muted-2); line-height:1.65; }
.form__msg{ display:none; padding:13px 16px; border-radius:var(--r); font-size:14px; font-weight:600; }
.form__msg.is-ok{ display:block; background:var(--teal-lt); color:#0a7a6d; border:1px solid #b8e6df; }
.form__msg.is-err{ display:block; background:#fdecec; color:#b93030; border:1px solid #f5c6c6; }

/* ---------- 18. 联系卡 ---------- */
.contact-item{ display:flex; gap:14px; padding:18px 0; border-bottom:1px solid var(--line); }
.contact-item:last-child{ border-bottom:none; }
.contact-item__ico{ width:40px; height:40px; border-radius:10px; background:var(--brand-lt); display:grid; place-items:center; flex-shrink:0; }
.contact-item__ico svg{ width:19px; height:19px; }
.contact-item dt{ font-size:12.5px; color:var(--muted-2); font-weight:600; margin-bottom:2px; }
.contact-item dd{ margin:0; font-size:15px; font-weight:700; color:var(--ink-2); word-break:break-all; }
.contact-item dd a:hover{ color:var(--brand); }

/* ---------- 19. CTA 区 ---------- */
.cta{
  position:relative; overflow:hidden; padding:66px 0; background:var(--bg-dark); color:#fff;
}
.cta__glow{ position:absolute; width:600px; height:600px; border-radius:50%; filter:blur(110px); background:rgba(22,104,193,.4); top:-300px; right:-140px; }
.cta__inner{ position:relative; display:flex; align-items:center; justify-content:space-between; gap:40px; flex-wrap:wrap; }
.cta h2{ color:#fff; font-size:clamp(1.4rem,2.6vw,1.95rem); }
.cta p{ margin-top:10px; color:#9fb4ca; max-width:560px; }
.cta__actions{ display:flex; gap:12px; flex-wrap:wrap; }

/* ---------- 20. 页脚 ---------- */
.footer{ background:#071019; color:#8ba0b5; padding:60px 0 0; font-size:14px; }
.footer__top{ display:grid; grid-template-columns:1.6fr 1fr 1fr 1.3fr; gap:44px; padding-bottom:44px; }
.footer h4{ font-size:13px; color:#fff; letter-spacing:.06em; margin-bottom:16px; font-weight:700; }
.footer ul{ display:grid; gap:10px; }
.footer a{ color:#8ba0b5; font-size:13.6px; transition:color .16s; }
.footer a:hover{ color:#fff; }
.footer__brand p{ font-size:13.6px; line-height:1.85; margin-top:14px; max-width:300px; color:#7e94a9; }
.footer__logo{ display:flex; align-items:center; gap:10px; }
.footer__logo svg{ width:32px; height:32px; }
.footer__logo b{ font-size:18px; color:#fff; font-weight:800; }
.footer__contact li{ font-size:13.6px; line-height:1.7; }
.footer__contact b{ color:#fff; font-weight:700; }
.footer__bottom{
  border-top:1px solid rgba(255,255,255,.08); padding:20px 0;
  display:flex; justify-content:space-between; gap:16px; flex-wrap:wrap; align-items:center;
  font-size:12.8px; color:#63798e;
}
.footer__bottom a{ font-size:12.8px; color:#63798e; }
@media(max-width:980px){ .footer__top{ grid-template-columns:1fr 1fr; gap:32px; } }
@media(max-width:560px){ .footer__top{ grid-template-columns:1fr; } }

/* ---------- 21. 浮动工具 ---------- */
.tools{ position:fixed; right:20px; bottom:26px; z-index:90; display:flex; flex-direction:column; gap:9px; }
.tools a,.tools button{
  position:relative; width:46px; height:46px; border-radius:13px; display:grid; place-items:center;
  background:#fff; border:1px solid var(--line); box-shadow:var(--sh); color:var(--ink-2);
  cursor:pointer; transition:background .18s, color .18s, transform .18s var(--ease);
}
.tools a:hover,.tools button:hover{ background:var(--brand); color:#fff; border-color:var(--brand); transform:translateY(-2px); }
.tools svg{ width:19px; height:19px; }
.tools__tip{
  position:absolute; right:calc(100% + 10px); top:50%; transform:translateY(-50%) translateX(4px);
  padding:6px 11px; background:var(--ink); color:#fff; font-size:12.5px; font-weight:600;
  border-radius:6px; white-space:nowrap; opacity:0; pointer-events:none; transition:opacity .16s, transform .16s;
}
.tools a:hover .tools__tip,.tools button:hover .tools__tip{ opacity:1; transform:translateY(-50%) translateX(0); }
.tools__top{ opacity:0; visibility:hidden; transition:opacity .2s, visibility .2s, transform .18s; }
.tools__top.is-show{ opacity:1; visibility:visible; }
@media(max-width:640px){
  .tools{ right:12px; bottom:16px; }
  .tools a,.tools button{ width:42px; height:42px; border-radius:11px; }
  .tools__tip{ display:none; }
}

/* ---------- 22. 产品详情 ---------- */
.pd{ display:grid; grid-template-columns:1.05fr .95fr; gap:52px; align-items:start; }
@media(max-width:900px){
  .pd{ grid-template-columns:1fr; gap:30px; }
  .pd__media{ padding:22px; }
  .pd__media img{ max-width:380px; margin:0 auto; }
  .pd__panel > div{ grid-template-columns:repeat(3,1fr) !important; gap:8px !important; }
  .pd__panel b{ font-size:1rem !important; }
}
.pd__media{
  background:linear-gradient(160deg,#eef5fc,#dfeaf6); border:1px solid var(--line);
  border-radius:var(--r-xl); padding:34px; display:grid; place-items:center;
}
.pd__media img{ width:100%; height:auto; }
.pd__meta{ display:flex; gap:8px; margin-bottom:16px; flex-wrap:wrap; }
.chip{ font-size:11.5px; font-weight:700; padding:4px 11px; border-radius:100px; background:var(--brand-lt); color:var(--brand); }
.chip--teal{ background:var(--teal-lt); color:#0a7a6d; }
.chip--accent{ background:var(--accent-lt); color:var(--accent-dk); }
.pd h1{ font-size:clamp(1.6rem,3.2vw,2.3rem); }
.pd__desc{ margin-top:14px; color:var(--muted); font-size:15px; line-height:1.9; }
.pd__panel{ margin-top:26px; padding:20px 22px; background:var(--bg-soft); border:1px solid var(--line); border-radius:var(--r-lg); }
.pd__panel h3{ font-size:13px; color:var(--muted); letter-spacing:.05em; margin-bottom:14px; }
.pd__actions{ display:flex; gap:12px; margin-top:26px; flex-wrap:wrap; }
.pd__panel > div{ display:grid; grid-template-columns:repeat(3,1fr); gap:14px; }
.pd__panel b{ display:block; white-space:nowrap; font-size:1.15rem; color:var(--brand); letter-spacing:-.02em; line-height:1.35; }
.pd__panel b small{ font-size:.68em; font-weight:700; margin-left:1px; }
.pd__panel span{ display:block; font-size:12.5px; color:var(--muted); margin-top:3px; }

/* ---------- 23. 其它 ---------- */
.hr{ height:1px; background:var(--line); border:none; margin:0; }
.notice{
  display:flex; gap:12px; padding:15px 18px; background:var(--accent-lt);
  border:1px solid #f8d9b6; border-radius:var(--r); font-size:13.8px; color:#8a4b0c; line-height:1.7;
}
.notice svg{ width:18px; height:18px; flex-shrink:0; margin-top:3px; }
.scene{ position:relative; border-radius:var(--r-lg); overflow:hidden; border:1px solid var(--line); background:#fff; }
.scene__art{ aspect-ratio:4/3; display:grid; place-items:center; background:linear-gradient(160deg,#f4f8fc,#e7eff8); }
.scene__art img{ width:72%; }
.scene__body{ padding:18px 20px 20px; }
.scene__body h3{ font-size:1rem; margin-bottom:6px; }
.scene__body p{ font-size:13.5px; color:var(--muted); line-height:1.72; }


/* ---------- 24. 文章详情 ---------- */
.article{ font-size:16.5px; line-height:1.95; color:#33445a; }
.article p{ margin-bottom:20px; }
.article p:first-child{ font-size:17.5px; color:var(--ink); }
.article h2{ font-size:1.2rem; margin:34px 0 14px; }
.article ul{ margin:0 0 20px 22px; list-style:disc; }
.article li{ margin-bottom:8px; }
.article strong{ color:var(--ink); font-weight:700; }
.article__nav{
  display:grid; gap:4px; margin-top:40px; padding-top:24px; border-top:1px solid var(--line);
}
.article__nav a{
  display:flex; gap:14px; align-items:baseline; padding:13px 12px; border-radius:var(--r);
  transition:background .16s;
}
.article__nav a:hover{ background:var(--bg-soft); }
.article__nav span{ font-size:12.5px; color:var(--muted-2); flex:0 0 44px; }
.article__nav b{ font-weight:600; font-size:14.5px; color:var(--ink-2); line-height:1.6; }
.article__nav a:hover b{ color:var(--brand); }
.pagehead time{ font-size:14px; color:#7d93ab; }

/* 打印 */
@media print{
  .nav,.tools,.cta,.footer{ display:none !important; }
  body{ font-size:12pt; }
  .hero,.pagehead{ background:#fff !important; color:#000 !important; padding:20px 0; }
  .hero h1,.pagehead h1{ color:#000 !important; }
}