/* v2 — Cohere-inspired enterprise system: white canvas, 22px cards, cool neutrals, blue interaction */
:root{
  /* Cohere palette (custom faces use fallbacks: Space Grotesk / Inter / JetBrains Mono) */
  --c-black:#000000;
  --c-near-black:#212121;
  --c-deep-dark:#17171c;
  --c-interaction:#1863dc;
  --c-ring-blue:rgba(76, 110, 230, 0.5);
  --c-focus-purple:#9b60aa;
  --c-white:#ffffff;
  --c-snow:#fafafa;
  --c-gray-lightest:#f2f2f2;
  --c-muted:#93939f;
  --c-border-cool:#d9d9dd;
  --c-border-light:#e5e7eb;
  --c-hero-purple:linear-gradient(125deg, #1e1230 0%, #3d2560 42%, #5c3880 100%);
  --c-hero-purple-soft:radial-gradient(ellipse 100% 80% at 80% 20%, rgba(155, 96, 170, 0.35) 0%, transparent 55%);
  --c-footer-dusk:linear-gradient(180deg, #2a1f38 0%, #17171c 50%, #000000 100%);

  --v2-font-display:"Space Grotesk", "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --v2-font-body:"Inter", Arial, ui-sans-serif, system-ui, -apple-system, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --v2-font-mono:"JetBrains Mono", ui-monospace, monospace;

  --v2-navy:var(--c-black);
  --v2-blue:var(--c-interaction);
  --v2-blue-cta:var(--c-interaction);
  --v2-blue-hover:var(--c-interaction);
  --v2-blue-light:rgba(255,255,255,.72);
  --v2-bg:var(--c-white);
  --v2-bg-subtle:var(--c-snow);
  --v2-bg-muted:var(--c-gray-lightest);
  --v2-surface:var(--c-white);
  --v2-text:var(--c-near-black);
  --v2-text-secondary:#4b4b55;
  --v2-text-muted:var(--c-muted);
  --v2-border:var(--c-border-cool);
  --v2-border-strong:var(--c-near-black);
  --v2-ease-out:cubic-bezier(0.22, 1, 0.36, 1);
  --v2-ease-soft:cubic-bezier(0.4, 0, 0.2, 1);
  --v2-shadow:none;
  --v2-shadow-card:none;
  --v2-shadow-card-hover:none;
  --v2-shadow-nav:none;
  --v2-radius:22px;
  --v2-radius-sm:8px;
  --v2-radius-pill:9999px;
  --v2-max:1160px;
  --v2-side:280px;
  --v2-accent-label:var(--c-muted);
  --v2-green:var(--c-interaction);
  --v2-green-mid:var(--c-interaction);
  --v2-green-light:var(--c-interaction);
  --v2-focus:0 0 0 2px var(--c-interaction);
  --v2-focus-ring:0 0 0 4px var(--c-ring-blue);
  --v2-masthead-bg-layers:var(--c-white);
}

*{box-sizing:border-box}
html{
  -webkit-text-size-adjust:100%;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
html,body{height:100%}
body{
  margin:0;
  font-family:var(--v2-font-body);
  font-size:16px;
  line-height:1.5;
  font-weight:400;
  letter-spacing:normal;
  color:var(--v2-text);
  background:var(--v2-bg);
}

a{color:var(--c-black);text-decoration:none;transition:color .15s var(--v2-ease-soft), opacity .15s var(--v2-ease-soft)}
a:hover{text-decoration:none; color:var(--c-interaction); opacity:.8}
.v2-nav-toggle:focus-visible,
.v2-nav-item:focus-visible,
.v2-btn:focus-visible,
.v2-text-link:focus-visible,
.v2-case-row:focus-visible{
  outline:2px solid var(--c-interaction);
  outline-offset:2px;
  box-shadow:var(--v2-focus-ring);
}
.v2-card:focus-visible{
  outline:2px solid var(--c-interaction);
  outline-offset:2px;
  border-radius:var(--v2-radius);
  box-shadow:var(--v2-focus-ring);
}
.v2-case-row:focus-visible{border-radius:8px}

.v2-wrap{
  width:100%;
  max-width:var(--v2-max);
  margin:0 auto;
  padding:0 clamp(16px, 4vw, 28px);
}
.v2-sr-only{
  position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0;
}

/* —— Masthead —— */
/* 勿对整块 masthead 使用 backdrop-filter：会为本层后代建立 fixed 包含块，
   导致抽屉导航的 position:fixed 相对 header 计算高度，主内容区（如首页横幅）会盖住菜单。 */
.v2-masthead{
  position:sticky;
  top:0;
  z-index:500;
  background:rgba(255,255,255,.98);
  border-bottom:1px solid var(--c-border-cool);
  box-shadow:none;
}
.v2-masthead-inner{
  display:grid;
  grid-template-columns:auto 1fr auto;
  align-items:center;
  gap:clamp(10px, 2.5vw, 22px);
  padding:12px 0;
}
.v2-brand{display:block; line-height:0; flex-shrink:0}
.v2-brand:hover{opacity:.94}
.v2-brand-logo{
  display:block;
  height:40px;
  width:auto;
  max-width:min(220px, 48vw);
  object-fit:contain;
  object-position:left center;
}
.v2-nav-main{
  display:flex;
  flex-wrap:wrap;
  justify-content:center;
  align-items:stretch;
  gap:2px 4px;
  justify-self:center;
}
.v2-nav-item{
  display:inline-flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:0;
  padding:8px 12px;
  border-radius:4px;
  color:var(--c-black) !important;
  text-decoration:none !important;
  border:1px solid transparent;
  background:transparent;
  transition:color .18s var(--v2-ease-out), background .18s var(--v2-ease-out);
}
.v2-nav-zh{
  font-size:16px;
  font-weight:400;
  letter-spacing:normal;
  line-height:1.2;
}
.v2-nav-en{
  font-family:var(--v2-font-mono);
  font-size:8px;
  font-weight:400;
  letter-spacing:.16px;
  text-transform:uppercase;
  color:var(--c-muted);
  line-height:1.15;
}
.v2-nav-item:hover{
  background:transparent;
  border-color:transparent;
  color:var(--c-interaction) !important;
  opacity:.8;
}
.v2-nav-item:hover .v2-nav-en{color:var(--c-interaction); opacity:.85}
.v2-nav-item.is-active{
  background:transparent;
  border-color:transparent;
}
.v2-nav-item.is-active .v2-nav-en{color:var(--c-muted)}
.v2-masthead-meta{
  text-align:right;
  font-size:16px;
  color:var(--v2-text-secondary);
  line-height:1.35;
}
.v2-masthead-meta-label{
  display:block;
  font-family:var(--v2-font-mono);
  font-size:12px;
  font-weight:400;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--c-muted);
}
.v2-masthead-meta-val{
  color:var(--c-black) !important;
  font-weight:400;
  text-decoration:none !important;
}
.v2-masthead-meta-val:hover{text-decoration:none !important; color:var(--c-interaction) !important; opacity:.8}

.v2-nav-toggle{
  display:none;
  flex-direction:column;
  justify-content:center;
  align-items:center;
  gap:4px;
  width:44px;
  height:44px;
  margin:0;
  padding:0;
  border:1px solid var(--c-border-cool);
  border-radius:8px;
  background:var(--c-white);
  cursor:pointer;
  flex-shrink:0;
  -webkit-tap-highlight-color:transparent;
  transition:background .18s var(--v2-ease-out), border-color .18s var(--v2-ease-out);
}
.v2-nav-toggle:hover{background:var(--c-snow); border-color:var(--c-border-cool)}
.v2-nav-toggle-bar{
  display:block;
  width:20px;
  height:2px;
  border-radius:1px;
  background:var(--c-near-black);
  transition:transform .25s var(--v2-ease-out), opacity .2s;
}
body.v2-nav-open .v2-nav-toggle-bar:nth-child(1){transform:translateY(6px) rotate(45deg)}
body.v2-nav-open .v2-nav-toggle-bar:nth-child(2){opacity:0}
body.v2-nav-open .v2-nav-toggle-bar:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.v2-nav-scrim{display:none}

/* —— Buttons: ghost default, dark solid primary —— */
.v2-btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  padding:12px 22px; border-radius:var(--v2-radius-pill);
  border:1px solid transparent;
  background:transparent;
  color:var(--c-black);
  font-family:var(--v2-font-body);
  font-weight:400;
  font-size:16px;
  letter-spacing:normal;
  text-decoration:none !important;
  cursor:pointer;
  box-shadow:none;
  transition:color .18s var(--v2-ease-out), background .18s var(--v2-ease-out), border-color .18s var(--v2-ease-out), opacity .18s var(--v2-ease-out);
}
.v2-btn.primary{
  border-color:var(--c-black);
  background:var(--c-black);
  color:var(--c-white);
}
.v2-btn.primary:hover{
  border-color:var(--c-black);
  background:var(--c-deep-dark);
  color:var(--c-white);
  opacity:1;
}
.v2-btn-block{width:100%}
.v2-btn:hover{border-color:transparent; color:var(--c-interaction); opacity:.8; box-shadow:none}
.v2-btn.primary:hover{color:var(--c-white); opacity:1}

.v2-input, .v2-select{
  width:100%;
  padding:10px 14px;
  border-radius:8px;
  border:1px solid var(--c-border-cool);
  background:var(--v2-surface);
  color:var(--v2-text);
  outline:none;
  font-family:var(--v2-font-body);
  font-size:16px;
}
.v2-input:focus, .v2-select:focus{
  border-color:var(--c-focus-purple);
  box-shadow:none;
  outline:2px solid var(--c-interaction);
  outline-offset:1px;
}
.v2-input::placeholder{color:#888}
.v2-select{appearance:none; background-color:var(--v2-surface)}

.v2-search{display:flex; gap:10px; margin-top:6px; flex-wrap:wrap; align-items:center}

/* —— Legacy hero block (unused on main home) —— */
.v2-hero{padding:52px 0 26px}
.v2-hero-grid{display:grid; grid-template-columns: 1.15fr .85fr; gap:18px; align-items:stretch}
.v2-hero-card{
  border-radius: var(--v2-radius);
  border: 1px solid var(--c-gray-lightest);
  background:var(--v2-surface);
  box-shadow: var(--v2-shadow-card);
  overflow:hidden;
}
.v2-hero-main{padding:28px}
.v2-kicker{
  display:inline-flex; align-items:center; gap:8px;
  font-family:var(--v2-font-mono);
  font-size:14px; color:var(--c-muted);
  border:1px solid var(--c-border-light);
  background:var(--c-snow);
  padding:6px 12px; border-radius:4px;
  text-transform:uppercase;
  letter-spacing:.28px;
  font-weight:400;
}
.v2-title{
  margin:14px 0 10px;
  font-family:var(--v2-font-display);
  font-size:clamp(32px, 5vw, 60px);
  line-height:1;
  font-weight:400;
  letter-spacing:-1.2px;
  color:var(--c-black);
}
.v2-lead{margin:0; color:var(--v2-text-secondary); font-size:18px; line-height:1.4; max-width:58ch}
.v2-actions{margin-top:16px; display:flex; gap:10px; flex-wrap:wrap}
.v2-metrics{margin-top:18px; display:grid; grid-template-columns: repeat(3,1fr); gap:10px}
.v2-metric{
  padding:12px 12px;
  border-radius: var(--v2-radius);
  border:1px solid var(--c-gray-lightest);
  background:var(--v2-bg-subtle);
}
.v2-metric b{display:block; font-size:16px; font-weight:400; color:var(--c-black)}
.v2-metric span{display:block; margin-top:4px; font-size:12px; color:var(--v2-text-secondary)}
.v2-hero-aside{display:flex; flex-direction:column}
.v2-hero-aside .v2-hero-card{padding:18px}
.v2-aside-title{font-weight:400; margin:0 0 10px; font-size:24px; letter-spacing:-0.32px; color:var(--c-black)}

/* —— Sections —— */
.v2-section{padding:18px 0 8px}
.v2-section-head{display:flex; align-items:flex-end; justify-content:space-between; gap:12px; margin-bottom:12px}
.v2-h2{margin:0; font-family:var(--v2-font-body); font-size:18px; font-weight:400; letter-spacing:normal; color:var(--c-black)}
.v2-sub{margin:0; color:var(--v2-text-secondary); font-size:14px; line-height:1.4}

.v2-grid{
  display:grid;
  grid-template-columns: repeat(12, 1fr);
  gap:14px;
}
.v2-card{
  grid-column: span 4;
  border-radius: var(--v2-radius);
  border: 1px solid var(--c-gray-lightest);
  background:var(--v2-surface);
  box-shadow: var(--v2-shadow-card);
  overflow:hidden;
  transition:border-color .22s var(--v2-ease-out), transform .22s var(--v2-ease-out);
}
.v2-card-inner{padding:clamp(20px, 3vw, 28px)}
.v2-card-title{
  margin:0 0 6px;
  font-size:clamp(17px, 1.9vw, 24px);
  line-height:1.3;
  font-weight:400;
  letter-spacing:normal;
  color:var(--c-black);
}
.v2-card-desc{margin:0; font-size:14px; color:var(--v2-text-secondary); line-height:1.4}
.v2-pillrow{margin-top:12px; display:flex; gap:8px; flex-wrap:wrap}
.v2-pill{
  font-size:14px;
  border-radius:4px;
  padding:6px 10px;
  border:1px solid var(--c-border-light);
  background:var(--c-snow);
  color:var(--v2-text-secondary);
  font-weight:400;
}
.v2-card:hover{
  transform:none;
  border-color:var(--c-border-cool);
  box-shadow:var(--v2-shadow-card-hover);
}
.v2-thumb{
  aspect-ratio:4/3;
  overflow:hidden;
  border-radius:0;
  background:var(--c-snow);
  border-bottom:1px solid var(--c-gray-lightest);
}
.v2-thumb img{width:100%;height:100%;object-fit:cover;display:block}
.v2-thumb--placeholder{
  min-height:140px;
  background:linear-gradient(145deg, var(--c-snow) 0%, var(--c-gray-lightest) 100%);
}

.v2-grid-products .v2-product-card{grid-column: span 3; padding:0}
.v2-grid-products .v2-product-card .v2-card-inner{padding:14px 14px 16px}
.v2-grid-categories .v2-category-card{grid-column: span 4; padding:0}
.v2-card-title--twoline{
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
  min-height:2.6em;
  line-height:1.3;
}

/* —— Banner: purple-violet hero band —— */
.v2-banner{
  position:relative;
  background:
    var(--c-hero-purple-soft),
    var(--c-hero-purple);
  border-bottom:1px solid rgba(0,0,0,.12);
}
.v2-banner--home{min-height:200px; display:flex; align-items:flex-end}
.v2-banner--page{min-height:120px}
.v2-banner-inner{padding:28px 18px 26px}
.v2-banner-kicker{
  font-family:var(--v2-font-mono);
  font-size:14px; letter-spacing:.28px; text-transform:uppercase;
  color:rgba(255,255,255,.65); margin:0 0 10px; font-weight:400;
}
.v2-banner-lead{
  margin:0; font-size:18px; font-weight:400; color:rgba(255,255,255,.92); max-width:52ch; line-height:1.4;
}
.v2-banner-title{
  margin:0;
  font-family:var(--v2-font-display);
  font-size:clamp(32px, 4vw, 48px);
  font-weight:400;
  letter-spacing:-0.48px;
  line-height:1.2;
  color:#fff;
}
.v2-banner-en{
  font-family:var(--v2-font-mono);
  font-size:12px; font-weight:400; color:rgba(255,255,255,.72); margin-left:10px;
  letter-spacing:.14em; text-transform:uppercase;
}
.v2-card-desc--en{
  font-size:12px;
  line-height:1.45;
  color:var(--v2-text-muted);
  font-style:italic;
  margin:4px 0 0;
}

/* —— Home：Banner → 简介 → 产品 → 案例（流式留白，非拼贴） —— */
.v2-home-banner{
  width:100%;
  background:var(--c-deep-dark);
}
.v2-home-banner-track{
  position:relative;
  width:100%;
  max-width:var(--v2-max);
  margin:0 auto;
  /* 与 .v2-wrap 同宽、同水平内边距，使轮播区与页头/内页主栏对齐 */
  padding:0 clamp(16px, 4vw, 28px);
  min-height:140px;
  max-height:240px;
  height:clamp(140px, 22vw, 240px);
  overflow:hidden;
  border-radius:0 0 22px 22px;
}
.v2-home-banner-track::after{
  content:"";
  position:absolute;
  inset:0;
  z-index:2;
  pointer-events:none;
  background:linear-gradient(180deg, rgba(12,18,16,.15) 0%, transparent 45%, transparent 70%, rgba(12,18,16,.4) 100%);
}
.v2-home-banner-slide{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  object-fit:cover;
  object-position:center;
  opacity:0;
  transition:opacity .85s ease;
}
.v2-home-banner-slide.is-active{
  opacity:1;
  z-index:1;
}

.v2-home-section{
  padding:clamp(40px, 6vw, 72px) 0;
}
.v2-home-section-inner > :not(.v2-home-heading){
  padding-left:clamp(24px, 4vw, 32px);
  padding-right:clamp(24px, 4vw, 32px);
}
.v2-home-section--profile{
  background:var(--v2-surface);
  border-top:1px solid var(--c-border-light);
  border-bottom:1px solid var(--c-border-light);
}
.v2-home-section--products{background:var(--c-snow)}
.v2-home-section--cases{
  background:var(--v2-surface);
  border-top:1px solid var(--c-border-light);
}

.v2-home-heading{margin:0 0 clamp(22px, 3vw, 32px)}
.v2-home-heading-zh{
  margin:0;
  font-family:var(--v2-font-body);
  font-size:clamp(28px, 3.2vw, 48px);
  font-weight:400;
  letter-spacing:-0.48px;
  line-height:1.2;
  color:var(--c-black);
}
.v2-home-heading-en{
  margin:8px 0 0;
  font-family:var(--v2-font-mono);
  font-size:14px;
  font-weight:400;
  letter-spacing:.28px;
  text-transform:uppercase;
  color:var(--c-muted);
}
.v2-home-heading::after{
  content:"";
  display:block;
  width:40px;
  height:1px;
  margin-top:16px;
  border-radius:0;
  background:var(--c-border-cool);
}

.v2-home-profile{
  display:grid;
  grid-template-columns:minmax(0, 1fr) minmax(0, 1.15fr);
  gap:clamp(24px, 4vw, 48px);
  align-items:start;
}
.v2-home-profile-media{
  margin:0;
  border-radius:var(--v2-radius);
  overflow:hidden;
  border:1px solid var(--c-gray-lightest);
  box-shadow:var(--v2-shadow-card);
  aspect-ratio:4/3;
  background:var(--c-snow);
}
.v2-home-profile-media img{
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
}
.v2-home-profile-body{min-width:0}
.v2-home-profile-cn{
  margin:0 0 18px;
  font-size:18px;
  line-height:1.4;
  font-weight:400;
  color:var(--v2-text-secondary);
  max-width:52ch;
}
.v2-home-profile-en{
  margin:0 0 20px;
  padding-top:16px;
  border-top:1px solid var(--c-border-light);
  font-size:16px;
  line-height:1.5;
  color:var(--c-muted);
  font-style:normal;
  max-width:52ch;
}
.v2-link-more{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:16px;
  font-weight:400;
  color:var(--c-black);
  text-decoration:none !important;
}
.v2-link-more::after{content:"→"; transition:transform .2s var(--v2-ease-out)}
.v2-link-more:hover{color:var(--c-interaction); opacity:.8}
.v2-link-more:hover::after{transform:translateX(3px)}

.v2-home-lead{
  margin:0 0 24px;
  font-size:14px;
  line-height:1.65;
  color:var(--v2-text-secondary);
  max-width:56ch;
}
.v2-home-product-grid{
  display:grid;
  grid-template-columns:repeat(4, minmax(0, 1fr));
  gap:clamp(14px, 2vw, 20px);
}
.v2-home-pcard{
  display:flex;
  flex-direction:column;
  border-radius:var(--v2-radius);
  border:1px solid var(--c-gray-lightest);
  background:var(--v2-surface);
  box-shadow:var(--v2-shadow-card);
  text-decoration:none !important;
  color:inherit;
  overflow:hidden;
  transition:border-color .2s var(--v2-ease-out), transform .2s var(--v2-ease-out);
}
.v2-home-pcard:hover{
  border-color:var(--c-border-cool);
  box-shadow:var(--v2-shadow-card-hover);
  transform:none;
}
.v2-home-pcard-img{
  aspect-ratio:4/3;
  background:var(--v2-bg-muted);
  overflow:hidden;
}
.v2-home-pcard-img img{
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
}
.v2-home-pcard-ph{
  width:100%;
  height:100%;
  min-height:100%;
  background:linear-gradient(145deg, var(--c-snow), var(--c-gray-lightest));
}
.v2-home-pcard-text{
  padding:12px 14px 14px;
  display:flex;
  flex-direction:column;
  gap:6px;
}
.v2-home-pcard-title{
  font-size:16px;
  font-weight:400;
  color:var(--c-black);
  line-height:1.35;
  letter-spacing:normal;
}
.v2-home-pcard-sub{
  font-size:12px;
  line-height:1.45;
  color:var(--v2-text-muted);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}

.v2-home-actions{margin-top:28px}

.v2-home-case-grid{
  display:grid;
  grid-template-columns:repeat(4, minmax(0, 1fr));
  gap:12px;
}
.v2-home-ccard{
  display:block;
  padding:18px 16px;
  border-radius:var(--v2-radius);
  border:1px solid var(--c-gray-lightest);
  background:var(--c-white);
  text-decoration:none !important;
  transition:background .18s var(--v2-ease-out), border-color .18s var(--v2-ease-out);
}
.v2-home-ccard:hover{
  background:var(--c-snow);
  border-color:var(--c-border-cool);
}
.v2-home-ccard-title{
  font-size:16px;
  font-weight:400;
  color:var(--c-black);
  letter-spacing:normal;
}
.v2-home-ccard:hover .v2-home-ccard-title{color:var(--c-interaction); opacity:.8}

@media (max-width: 980px){
  .v2-home-profile{grid-template-columns:1fr}
  .v2-home-product-grid{grid-template-columns:repeat(2, 1fr)}
  .v2-home-case-grid{grid-template-columns:repeat(2, 1fr)}
}
@media (max-width: 560px){
  .v2-home-product-grid,
  .v2-home-case-grid{grid-template-columns:1fr}
}
.v2-module-title{
  position:relative;
  display:flex;
  align-items:baseline;
  gap:12px;
  margin:0 0 18px;
  padding-bottom:14px;
  border-bottom:none;
}
.v2-module-title::after{
  content:"";
  position:absolute;
  left:0;
  bottom:0;
  width:100%;
  height:1px;
  border-radius:0;
  background:var(--c-border-cool);
}
.v2-module-title--inline{margin:0; border:0; padding:0}
.v2-module-title--inline::after{display:none}
.v2-module-zh{font-size:clamp(20px, 2vw, 32px); font-weight:400; color:var(--c-black); letter-spacing:-0.32px; line-height:1.2}
.v2-module-en{font-family:var(--v2-font-mono); font-size:14px; letter-spacing:.28px; color:var(--c-muted); text-transform:uppercase; font-weight:400}
.v2-case-list{
  display:flex;
  flex-direction:column;
  gap:0;
  border-radius:var(--v2-radius);
  background:var(--c-white);
  border:1px solid var(--c-gray-lightest);
  padding:6px 4px;
  box-shadow:none;
}
.v2-home-section--cases .v2-case-list{
  background:var(--c-white);
}
.v2-case-row{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  margin:0 10px;
  padding:14px 8px;
  border-bottom:1px solid var(--c-border-light);
  color:var(--v2-text-secondary);
  font-size:16px;
  text-decoration:none !important;
  border-radius:8px;
  transition:background .18s var(--v2-ease-out), color .18s var(--v2-ease-out);
}
.v2-case-row::after{
  content:"";
  flex-shrink:0;
  width:6px;
  height:6px;
  border-right:2px solid var(--c-muted);
  border-bottom:2px solid var(--c-muted);
  transform:rotate(-45deg);
  opacity:.55;
}
.v2-case-row:last-child{border-bottom:none}
.v2-case-row:hover{color:var(--c-interaction); background:var(--c-snow); opacity:.9}
.v2-case-row:hover::after{opacity:1; border-color:var(--c-interaction)}
.v2-case-name{font-weight:400; color:var(--c-black); letter-spacing:normal}
.v2-text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  margin-top:16px;
  font-size:16px;
  font-weight:400;
  letter-spacing:normal;
  color:var(--c-black);
  text-decoration:none !important;
  transition:gap .2s var(--v2-ease-out), color .15s var(--v2-ease-soft), opacity .15s var(--v2-ease-soft);
}
.v2-text-link::after{
  content:"→";
  font-size:14px;
  line-height:1;
  transition:transform .2s var(--v2-ease-out);
}
.v2-text-link:hover{
  color:var(--c-interaction);
  opacity:.8;
  gap:10px;
}
.v2-text-link:hover::after{transform:translateX(2px)}

.v2-page-inner{
  padding:22px 0 36px;
}
.v2-cat-strip{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:6px 8px;
  margin:0 0 20px;
  padding-bottom:14px;
  border-bottom:1px solid var(--c-border-light);
}
.v2-cat-strip a{
  padding:8px 16px;
  border-radius:var(--v2-radius-pill);
  font-size:14px;
  font-weight:500;
  color:var(--v2-text-secondary);
  text-decoration:none !important;
  border:1px solid var(--c-border-light);
  background:var(--c-white);
  transition:background .15s var(--v2-ease-out), border-color .15s var(--v2-ease-out), color .15s var(--v2-ease-out);
}
.v2-cat-strip a:hover{
  background:var(--c-snow);
  color:var(--c-interaction);
  border-color:var(--c-border-cool);
  opacity:.9;
}
.v2-cat-strip a.is-current{
  background:var(--c-black);
  border-color:var(--c-black);
  color:var(--c-white);
}

.v2-sidebar{display:flex; flex-direction:column; gap:14px}
.v2-side-block{
  border-radius: var(--v2-radius);
  border: 1px solid var(--c-gray-lightest);
  background:var(--v2-surface);
  padding:clamp(20px, 3vw, 28px);
  box-shadow:var(--v2-shadow-card);
}
.v2-side-head{
  display:flex; align-items:baseline; justify-content:space-between; gap:8px;
  margin-bottom:12px;
  padding-bottom:10px;
  border-bottom:1px solid var(--v2-border);
}
.v2-side-head-zh{font-size:16px; font-weight:400; color:var(--c-black)}
.v2-side-head-en{font-family:var(--v2-font-mono); font-size:12px; letter-spacing:.14em; color:var(--c-muted); text-transform:uppercase; font-weight:400}
.v2-side-search{display:flex; flex-direction:column; gap:10px}
.v2-series{display:flex; flex-direction:column; gap:2px}
.v2-series a{
  display:block;
  padding:10px 10px;
  border-radius:8px;
  font-size:16px;
  color:var(--v2-text-secondary);
  text-decoration:none !important;
  border:1px solid transparent;
  line-height:1.45;
}
.v2-series a:hover{
  color:var(--c-black);
  background:var(--v2-bg-subtle);
}
.v2-series a.is-current{
  color:var(--c-black);
  background:var(--c-snow);
  border-color:var(--c-border-cool);
  font-weight:400;
}

.v2-page-heading{margin:0 0 12px; font-family:var(--v2-font-body); font-size:clamp(22px, 2.5vw, 32px); font-weight:400; letter-spacing:-0.32px; line-height:1.2; color:var(--c-black)}
.v2-article .v2-page-heading{margin-bottom:14px}
.v2-readable{max-width:72ch}
.v2-lead-text{margin:0 0 16px; color:var(--v2-text-secondary); font-size:16px; line-height:1.75}
.v2-detail-heading{
  margin:28px 0 12px; font-size:16px; font-weight:400;
  font-family:var(--v2-font-mono);
  text-transform:uppercase;
  letter-spacing:.28px;
  color:var(--c-muted); padding-bottom:8px; border-bottom:1px solid var(--c-border-light);
}
.v2-lead-text--en{font-style:italic; color:var(--v2-text-muted)}

.v2-contact-grid{display:grid; gap:20px}
.v2-contact-group{margin:0}
.v2-contact-group-title{
  margin:0 0 8px; font-family:var(--v2-font-mono); font-size:14px; font-weight:400;
  color:var(--c-muted); text-transform:uppercase; letter-spacing:.28px;
}
.v2-contact-group p{margin:0; color:var(--v2-text-secondary); line-height:1.7; font-size:16px}

.v2-product-hero{
  display:grid;
  grid-template-columns: minmax(0,1fr) minmax(0,1fr);
  gap:24px;
  align-items:start;
}
.v2-product-photo{
  border-radius: var(--v2-radius);
  overflow:hidden;
  border:1px solid var(--c-gray-lightest);
  background:var(--c-snow);
}
.v2-product-photo img{width:100%; display:block; aspect-ratio:1/1; object-fit:cover}
.v2-product-photo--empty{
  aspect-ratio:1/1;
  background:linear-gradient(145deg, var(--c-snow), var(--c-gray-lightest));
}
.v2-spec{margin:16px 0 0; display:grid; gap:0}
.v2-spec > div{
  display:grid;
  grid-template-columns: 120px 1fr;
  gap:12px;
  padding:12px 0;
  border-bottom:1px solid var(--v2-border);
  font-size:14px;
}
.v2-spec dt{margin:0; color:var(--v2-text-secondary); font-weight:400}
.v2-spec dd{margin:0; color:var(--v2-text)}
.v2-spec-en{display:block; font-family:var(--v2-font-mono); font-size:12px; font-weight:400; letter-spacing:.16px; text-transform:uppercase; color:var(--c-muted); margin-top:2px}

.v2-section-head--tight{margin-bottom:10px}
.v2-panel--inset{
  border-radius:var(--v2-radius-sm);
  background:var(--c-snow);
  border:1px solid var(--c-border-light);
  box-shadow:none;
}
.v2-list--stack{grid-template-columns:1fr}
.v2-row--case{align-items:center}
.v2-row--case-body{min-width:0}
.v2-case-visual{
  flex:0 0 auto;
  width:44px;
  height:44px;
  border-radius:8px;
  overflow:hidden;
  border:1px solid var(--c-gray-lightest);
  background:var(--c-snow);
}
.v2-case-visual img{
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
}
.v2-case-visual--initial{
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:16px;
  font-weight:400;
  color:var(--c-muted);
  background:var(--c-gray-lightest);
  line-height:1;
  user-select:none;
}
.v2-search--inline{flex-wrap:wrap; align-items:center}

.v2-list{display:grid; grid-template-columns:repeat(2,1fr); gap:12px}
.v2-row{
  display:flex; gap:14px; align-items:flex-start;
  padding:16px;
  border-radius: var(--v2-radius);
  border:1px solid var(--c-gray-lightest);
  background:var(--v2-surface);
  box-shadow:var(--v2-shadow-card);
  transition:border-color .2s var(--v2-ease-out);
}
.v2-row:hover{border-color:var(--c-border-cool); box-shadow:var(--v2-shadow-card-hover)}
.v2-row h3{margin:0 0 6px; font-size:16px; font-weight:400; color:var(--c-black)}
.v2-row p{margin:0; color:var(--v2-text-secondary); font-size:14px; line-height:1.6}

/* —— Footer: dusk gradient —— */
.v2-footer{
  margin-top:0;
  background:var(--c-footer-dusk);
  color:rgba(255,255,255,.78);
  border-top:1px solid rgba(255,255,255,.08);
}
.v2-footer-wrap{
  padding:clamp(22px, 3vw, 32px) clamp(16px, 4vw, 28px) clamp(26px, 3.5vw, 36px);
}
.v2-foot-inner{
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:12px;
  width:100%;
  max-width:var(--v2-max);
  margin:0 auto;
  text-align:center;
}
.v2-foot-row{
  margin:0;
  font-size:12px;
  line-height:1.65;
  color:rgba(147,147,159,.92);
  text-align:center;
  width:100%;
  max-width:72ch;
}
.v2-foot-legal-line{
  letter-spacing:.01em;
}
.v2-foot-name{
  font-weight:400;
  color:rgba(255,255,255,.93);
}
.v2-foot-copy{color:rgba(255,255,255,.62)}
.v2-foot-dot{color:rgba(255,255,255,.35)}
.v2-foot-icp{
  color:rgba(255,255,255,.85) !important;
  text-decoration:none !important;
  font-weight:400;
  border-bottom:1px solid rgba(255,255,255,.25);
  transition:color .15s var(--v2-ease-soft), border-color .15s var(--v2-ease-soft);
}
.v2-foot-icp:hover{
  color:var(--c-interaction) !important;
  border-bottom-color:var(--c-interaction);
  opacity:.9;
}
.v2-foot-row--meta{
  font-size:13px;
  color:rgba(255,255,255,.68);
}
.v2-foot-row--meta a{
  color:rgba(255,255,255,.9) !important;
  text-decoration:none !important;
  font-weight:400;
}
.v2-foot-row--meta a:hover{text-decoration:underline !important; color:var(--c-interaction) !important; opacity:.9}
.v2-foot-domain{font-weight:400; letter-spacing:.02em; color:rgba(255,255,255,.75)}

/* —— Page panels —— */
.v2-page{padding:22px 0 28px}
.v2-breadcrumb{color:var(--v2-text-secondary); font-size:14px; margin:0 0 12px}
.v2-breadcrumb a{color:var(--c-black)}
.v2-breadcrumb a:hover{color:var(--c-interaction); opacity:.8}
.v2-panel{
  border-radius: var(--v2-radius);
  border: 1px solid var(--c-gray-lightest);
  background:var(--v2-surface);
  box-shadow: var(--v2-shadow-card);
  padding:clamp(24px, 4vw, 32px);
}
.v2-panel h1{margin:0 0 8px; font-family:var(--v2-font-display); font-size:clamp(24px, 3vw, 36px); font-weight:400; letter-spacing:-0.36px; line-height:1.2; color:var(--c-black)}
.v2-rich{color:var(--v2-text-secondary); line-height:1.85; font-size:16px; overflow-wrap:anywhere; word-break:break-word}
.v2-rich h1,.v2-rich h2,.v2-rich h3{color:var(--c-black); font-weight:400}
.v2-rich :where(img, video, iframe){max-width:100%; height:auto}
.v2-rich :where(table){max-width:100%; display:block; overflow-x:auto; -webkit-overflow-scrolling:touch}
.v2-two{
  display:grid;
  grid-template-columns: 1fr 360px;
  gap:14px;
  align-items:start;
}
.v2-side{
  border-radius: var(--v2-radius);
  border: 1px solid var(--c-gray-lightest);
  background:var(--v2-bg-subtle);
  padding:16px;
}
.v2-side h3{margin:0 0 10px; font-size:16px; font-weight:400; color:var(--c-black)}
.v2-side a{display:block; padding:9px 10px; border-radius:10px; color:var(--v2-text-secondary)}
.v2-side a:hover{text-decoration:none; color:var(--c-black); background:var(--v2-bg)}

@media (max-width: 900px){
  .v2-wrap{
    padding-left:max(16px, env(safe-area-inset-left));
    padding-right:max(16px, env(safe-area-inset-right));
  }
  .v2-masthead-inner{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    gap:10px 12px;
  }
  .v2-brand{flex:0 0 auto}
  .v2-nav-toggle{display:inline-flex}
  .v2-masthead-meta{
    flex:1 1 100%;
    order:3;
    text-align:left;
    font-size:14px;
  }
  .v2-nav-main{
    position:fixed;
    top:var(--v2-masthead-height, 60px);
    right:0;
    bottom:0;
    width:min(300px, 88vw);
    max-width:100%;
    margin:0;
    padding:14px 12px calc(20px + env(safe-area-inset-bottom));
    flex-direction:column;
    align-items:stretch;
    justify-content:flex-start;
    justify-self:auto;
    gap:4px;
    background:var(--c-white);
    border-left:1px solid var(--c-border-cool);
    box-shadow:-10px 0 36px rgba(0,0,0,.1);
    overflow-y:auto;
    -webkit-overflow-scrolling:touch;
    z-index:502;
    transform:translate3d(100%, 0, 0);
    visibility:hidden;
    pointer-events:none;
    transition:transform .28s var(--v2-ease-out), visibility 0s linear .28s;
  }
  body.v2-nav-open .v2-nav-main{
    transform:translate3d(0, 0, 0);
    visibility:visible;
    pointer-events:auto;
    transition:transform .28s var(--v2-ease-out), visibility 0s linear 0s;
  }
  .v2-nav-main .v2-nav-item{
    flex-direction:row;
    flex-wrap:wrap;
    align-items:center;
    justify-content:flex-start;
    gap:6px 12px;
    padding:12px 14px;
    border-radius:8px;
  }
  .v2-nav-main .v2-nav-en{font-size:10px; letter-spacing:.12em}
  .v2-nav-scrim{
    display:block;
    position:fixed;
    left:0;
    right:0;
    top:var(--v2-masthead-height, 60px);
    bottom:0;
    z-index:501;
    background:rgba(23,23,28,.45);
    opacity:0;
    visibility:hidden;
    pointer-events:none;
    transition:opacity .25s var(--v2-ease-out), visibility 0s linear .25s;
  }
  body.v2-nav-open .v2-nav-scrim{
    opacity:1;
    visibility:visible;
    pointer-events:auto;
    transition:opacity .25s var(--v2-ease-out), visibility 0s linear 0s;
  }
  body.v2-nav-open{overflow:hidden}
  .v2-home-banner-track{
    border-radius:0 0 clamp(14px, 4vw, 22px) clamp(14px, 4vw, 22px);
    min-height:120px;
    height:clamp(120px, 32vw, 200px);
  }
  .v2-home-section-inner > :not(.v2-home-heading){
    padding-left:0;
    padding-right:0;
  }
  .v2-banner-inner{padding:20px 16px 18px}
  .v2-banner--page{min-height:100px}
  .v2-banner-title .v2-banner-en{display:block; margin:8px 0 0}
  .v2-page-inner{padding:16px 0 28px}
  .v2-panel{padding:clamp(18px, 5vw, 28px)}
  .v2-cat-strip{
    flex-wrap:nowrap;
    overflow-x:auto;
    overflow-y:hidden;
    -webkit-overflow-scrolling:touch;
    gap:8px;
    padding-bottom:10px;
    margin-bottom:16px;
    scrollbar-width:thin;
  }
  .v2-cat-strip a{flex-shrink:0; white-space:nowrap}
  .v2-row--case{flex-wrap:wrap}
  .v2-case-row{
    flex-wrap:wrap;
    align-items:flex-start;
    margin:0 4px;
    padding:12px 6px;
  }
  .v2-spec > div{grid-template-columns:1fr; gap:6px; padding:10px 0}
  .v2-footer-wrap{
    padding-bottom:max(clamp(26px, 3.5vw, 36px), calc(12px + env(safe-area-inset-bottom)));
  }
}

@media (prefers-reduced-motion: reduce){
  .v2-card,
  .v2-btn,
  .v2-nav-item,
  .v2-home-pcard,
  .v2-row,
  .v2-case-row,
  .v2-text-link,
  .v2-text-link::after,
  .v2-link-more::after{
    transition-duration:0.01ms !important;
  }
  .v2-card:hover,
  .v2-btn.primary:hover,
  .v2-home-pcard:hover{
    transform:none;
  }
  .v2-text-link:hover{gap:6px}
  .v2-text-link:hover::after{transform:none}
  .v2-link-more:hover::after{transform:none}
  .v2-home-banner-slide{transition-duration:.35s}
  .v2-nav-main,
  body.v2-nav-open .v2-nav-main,
  .v2-nav-scrim,
  body.v2-nav-open .v2-nav-scrim,
  .v2-nav-toggle-bar{
    transition-duration:0.01ms !important;
  }
}

@media (max-width: 980px){
  .v2-hero-grid{grid-template-columns:1fr}
  .v2-two{grid-template-columns:1fr}
  .v2-card{grid-column: span 6}
  .v2-list{grid-template-columns:1fr}
  .v2-grid-products .v2-product-card{grid-column: span 6}
  .v2-grid-categories .v2-category-card{grid-column: span 6}
  .v2-product-hero{grid-template-columns:1fr}
}
@media (max-width: 560px){
  .v2-title{font-size:30px}
  .v2-card{grid-column: span 12}
  .v2-metrics{grid-template-columns:1fr}
  .v2-grid-products .v2-product-card{grid-column: span 12}
  .v2-grid-categories .v2-category-card{grid-column: span 12}
}