/* 极增商界官网 v4（2026-11-09）—— 白底为主、黑底为辅：黑色导航与首屏，正文区块白 / 浅灰交替，少量黑色强调带；
   粗体大字、居中区块标题、方角实心按钮、大图满版。品牌色：青绿 #1ed6b0（填充用），浅底上的文字用深青绿 --ink。
   深色区块通过「深色作用域」重设变量，组件只引用变量，深浅两用。 */
:root {
  --bg: #fff;
  --bg-2: #f5f6f7;
  --bg-3: #ebedf0;
  --surface: #fff;
  --card: #fff;
  --text: #111;
  --text-2: #444;
  --text-3: #6f6f6f;
  --line: rgba(0, 0, 0, .1);
  --line-strong: rgba(0, 0, 0, .28);
  --accent: #1ed6b0;
  --ink: #0b8a72;
  --accent-dark: #0c3d33;
  --nav-h: 60px;
  --max: 1300px;
}
/* 深色作用域：只有首屏、页脚、图片卡片和手机示意是深色（参照英伟达官网：导航白色，中间区块全部浅色） */
.hero, .page-hero, .footer, .pcard, .phone, .toast {
  --bg: #000; --bg-2: #0b0b0b; --surface: #000; --card: #141414;
  --text: #fff; --text-2: #bdbdbd; --text-3: #8a8a8a;
  --line: rgba(255, 255, 255, .14); --line-strong: rgba(255, 255, 255, .5); --ink: #1ed6b0;
  color: var(--text);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "Alibaba PuHuiTi", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg); color: var(--text); line-height: 1.6; -webkit-font-smoothing: antialiased; overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img, video { display: block; max-width: 100%; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
ul { list-style: none; }
.container { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 40px; }

/* ---------- 导航：黑色实底 60px，菜单加粗带小三角 ---------- */
.nav { position: fixed; inset: 0 0 auto; height: var(--nav-h); background: #000; z-index: 100; }
.nav .container { height: 100%; display: flex; align-items: center; max-width: 1440px; }
.logo { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 19px; letter-spacing: 1px; white-space: nowrap; }
.logo-mark { width: 34px; height: 34px; border-radius: 50%; background: #fff; color: #000; display: grid; place-items: center; font-size: 16px; font-weight: 900; }
.nav-links { display: flex; flex: 1; justify-content: center; gap: 6px; height: 100%; }
.nav-links > li { position: relative; height: 100%; }
.nav-links > li > a { display: flex; align-items: center; gap: 6px; height: 100%; padding: 0 20px; font-size: 15px; font-weight: 700; transition: color .2s; }
.nav-links > li > a:hover, .nav-links > li > a.active { color: var(--ink); }
.caret { width: 0; height: 0; border-left: 4px solid transparent; border-right: 4px solid transparent; border-top: 4px solid currentColor; }
.drop { position: fixed; left: 0; right: 0; top: var(--nav-h); background: rgba(0, 0, 0, .96); opacity: 0; visibility: hidden; transition: .25s; border-top: 1px solid var(--line); }
.has-drop:hover .drop, .has-drop:focus-within .drop { opacity: 1; visibility: visible; }
.drop .container { display: grid; grid-template-columns: 320px 1fr; gap: 60px; padding-top: 44px; padding-bottom: 48px; max-width: 1300px; }
.drop-intro h4 { font-size: 22px; margin-bottom: 10px; }
.drop-intro p { color: var(--text-3); font-size: 14px; }
.drop-list { display: grid; grid-template-columns: 1fr 1fr; gap: 6px 40px; }
.drop-list a { display: flex; align-items: center; gap: 10px; padding: 12px 0; border-bottom: 1px solid var(--line); font-size: 15px; transition: color .2s; }
.drop-list a:hover { color: var(--ink); }
.badge { font-size: 11px; font-weight: 700; padding: 0 6px; border-radius: 2px; line-height: 18px; }
.badge.hot { background: #ff5a3c; color: #fff; }
.badge.new { background: var(--accent); color: #000; }
.badge.beta { background: #555; color: #fff; }
.nav-pill { display: inline-flex; align-items: center; gap: 6px; height: 32px; padding: 0 14px; border: 1px solid var(--accent); border-radius: 2px; color: var(--ink); font-size: 14px; font-weight: 600; white-space: nowrap; transition: background .2s, color .2s; }
.nav-pill:hover { background: var(--accent); color: #000; }
.menu-btn { display: none; width: 40px; height: 40px; margin-left: 12px; }
.menu-btn span { display: block; width: 22px; height: 2px; background: #fff; margin: 5px auto; }

/* ---------- 按钮：小号实心 + 外发光（51WORLD “了解更多”） ---------- */
.btn { display: inline-flex; align-items: center; justify-content: center; height: 38px; padding: 0 30px; border-radius: 2px; font-size: 14px; font-weight: 600; white-space: nowrap; transition: transform .2s, box-shadow .2s, background .2s, color .2s; }
.btn-primary { background: var(--accent); color: #04221b; }
.btn-primary:hover { background: #17c19e; }
.btn-line { border: 1px solid var(--text); color: var(--text); }
.btn-line:hover { border-color: var(--ink); color: var(--ink); }
.btn-lg { height: 42px; padding: 0 36px; font-size: 15px; }
.btns { display: flex; gap: 14px; flex-wrap: wrap; }

/* ---------- 首屏轮播 ---------- */
.hero { position: relative; height: 88vh; min-height: 600px; overflow: hidden; background: #000; }
.slide { position: absolute; inset: 0; opacity: 0; visibility: hidden; transition: opacity 1s, visibility 1s; display: flex; align-items: center; }
.slide.on { opacity: 1; visibility: visible; }
.slide-media { position: absolute; inset: 0; }
.slide-media img, .slide-media video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.slide-media::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(0, 0, 0, .74) 0%, rgba(0, 0, 0, .42) 55%, rgba(0, 0, 0, .18) 100%); }
.slide.on .kb { animation: kb 12s ease-out forwards; }
@keyframes kb { from { transform: scale(1.1); } to { transform: scale(1); } }
.slide .container { position: relative; z-index: 2; max-width: 1440px; }
.slide .brand { display: flex; align-items: center; gap: 16px; font-size: 44px; font-weight: 300; font-style: italic; letter-spacing: 1px; margin-bottom: 26px; }
.slide .brand i { width: 64px; height: 64px; border-radius: 50%; background: #fff; color: #000; font-style: normal; font-weight: 900; font-size: 30px; display: grid; place-items: center; }
.slide h1 { font-size: clamp(36px, 5vw, 72px); font-weight: 900; line-height: 1.2; letter-spacing: 1px; }
.slide .sub { font-size: clamp(18px, 2.2vw, 32px); margin: 22px 0 70px; font-weight: 500; }
.slide .brand, .slide h1, .slide .sub, .slide .btns { opacity: 0; transform: translateY(24px); transition: .8s; }
.slide.on .brand { opacity: 1; transform: none; transition-delay: .15s; }
.slide.on h1 { opacity: 1; transform: none; transition-delay: .3s; }
.slide.on .sub { opacity: 1; transform: none; transition-delay: .45s; }
.slide.on .btns { opacity: 1; transform: none; transition-delay: .6s; }
.dots { position: absolute; left: 50%; bottom: 36px; transform: translateX(-50%); display: flex; gap: 10px; z-index: 3; }
.dots button { width: 12px; height: 12px; border-radius: 6px; background: rgba(255, 255, 255, .35); transition: width .3s; position: relative; overflow: hidden; }
.dots button.on { width: 46px; }
.dots button.on::after { content: ""; position: absolute; inset: 0; background: #fff; transform-origin: left; animation: prog var(--dur, 7s) linear forwards; }
@keyframes prog { from { transform: scaleX(0); } to { transform: scaleX(1); } }
.only-m { display: none !important; }

/* ---------- 通用区块：接近一屏高，标题居中 ---------- */
.block { position: relative; padding: 110px 0; overflow: hidden; background: var(--surface); }
.block-dark2 { --surface: #f5f6f7; --card: #fff; background: var(--surface); }
.block-black { background: #000; }
.title { text-align: center; margin-bottom: 64px; }
.title h2 { font-size: 34px; font-weight: 800; letter-spacing: 2px; }
.title .en { font-size: 30px; font-weight: 700; margin-top: 6px; }
.title p { color: var(--text-2); font-size: 16px; margin-top: 16px; }

/* 使命愿景 */
.mission { min-height: 760px; display: flex; align-items: flex-start; padding-top: 150px; text-align: center; }
.mission-bg { position: absolute; inset: 0; }
.mission-bg img { width: 100%; height: 100%; object-fit: cover; }
.mission-bg::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, #000 0%, rgba(0, 0, 0, .6) 35%, rgba(0, 0, 0, .25) 70%, rgba(0, 0, 0, .1) 100%), radial-gradient(ellipse 70% 40% at 50% 100%, rgba(30, 214, 176, .55), transparent 70%); }
.mission .container { position: relative; z-index: 2; }
.mission h2 { font-size: 34px; font-weight: 800; letter-spacing: 2px; margin-bottom: 40px; }
.mission p { font-size: clamp(18px, 2vw, 26px); line-height: 2.1; font-weight: 500; }

/* 企业理念：两张大图 + 大关键词 + 三小列 */
.values { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.value .pic { aspect-ratio: 16 / 9; overflow: hidden; }
.value .pic img { width: 100%; height: 100%; object-fit: cover; transition: transform .8s; }
.value:hover .pic img { transform: scale(1.05); }
.value h3 { text-align: center; font-size: 40px; font-weight: 900; margin: 34px 0 6px; letter-spacing: 6px; }
.value h3::after { content: ""; display: block; width: 46px; height: 3px; background: var(--accent); margin: 12px auto 0; }
.value .three { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; text-align: center; margin-top: 30px; }
.value .three b { display: block; font-size: 18px; margin-bottom: 8px; }
.value .three span { font-size: 13px; color: var(--text-3); line-height: 1.8; }

/* 产品平台：4 张竖版满版图卡 */

.pcards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.pcard { position: relative; height: 560px; overflow: hidden; border-radius: 10px; display: block; }
.pcard img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; filter: brightness(.72); transition: transform .8s, filter .5s; }
.pcard:hover img { transform: scale(1.08); filter: brightness(.95); }
.pcard::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(0, 0, 0, .55), transparent 35%, transparent 60%, rgba(0, 0, 0, .7)); }
.pcard .head { position: absolute; z-index: 2; top: 34px; left: 0; right: 0; text-align: center; }
.pcard .head b { display: block; font-size: 46px; font-weight: 900; line-height: 1.1; letter-spacing: 1px; }
.pcard .head span { display: block; font-size: 18px; font-weight: 700; margin-top: 8px; }
.pcard .foot { position: absolute; z-index: 2; left: 0; right: 0; bottom: 30px; text-align: center; font-size: 14px; color: var(--text-2); letter-spacing: 1px; }
.pcard .foot em { font-style: normal; color: var(--ink); margin-left: 8px; }
.pcard .hover { position: absolute; z-index: 2; left: 28px; right: 28px; bottom: 70px; text-align: center; opacity: 0; transform: translateY(16px); transition: .4s; font-size: 14px; color: #e8e8e8; line-height: 1.8; }
.pcard:hover .hover { opacity: 1; transform: none; }

/* 增长路线图（EC Roadmap 式） */
.roadmap { display: grid; grid-template-columns: repeat(5, 1fr); position: relative; }
.rm { position: relative; padding: 0 18px 80px; text-align: center; }
.rm:nth-child(1) { background: linear-gradient(180deg, #000 30%, #041a15); }
.rm:nth-child(2) { background: linear-gradient(180deg, #000 30%, #072c24); }
.rm:nth-child(3) { background: linear-gradient(180deg, #000 30%, #0a3e33); }
.rm:nth-child(4) { background: linear-gradient(180deg, #000 30%, #0e5546); }
.rm:nth-child(5) { background: linear-gradient(180deg, #000 30%, #13705c); }
.rm.hl { background: linear-gradient(180deg, #000 20%, #17a386) !important; }
.rm .say { border: 1px solid rgba(255, 255, 255, .5); border-radius: 12px; padding: 14px 16px; font-size: 13px; line-height: 1.8; text-align: left; min-height: 96px; margin-bottom: 30px; color: #ddd; }
.rm .code { font-size: 26px; font-weight: 900; font-style: italic; }
.rm .nm { font-size: 20px; font-weight: 900; font-style: italic; margin-bottom: 10px; }
.rm .kw { font-size: 13px; color: var(--text-2); min-height: 42px; }
.rm .yr { font-size: 18px; font-weight: 600; margin-top: 18px; }
.rm.hl .code, .rm.hl .nm { color: #b6ffef; }
.rm.hl .say { border-color: #b6ffef; }
.rm::after { content: ""; position: absolute; z-index: 2; left: 50%; bottom: 34px; width: 10px; height: 10px; margin-left: -5px; border-radius: 50%; background: #fff; }
.rm.hl::after { width: 18px; height: 18px; margin-left: -9px; bottom: 30px; background: #fff; box-shadow: 0 0 0 5px rgba(255, 255, 255, .25); }
.roadmap::after { content: ""; position: absolute; left: 0; right: 0; bottom: 38px; height: 1px; background: rgba(255, 255, 255, .5); }

/* 媒体报道式卡片 */
.news-wrap { position: relative; }
.ncards { display: grid; grid-auto-flow: column; grid-auto-columns: calc((100% - 60px) / 3); gap: 30px; overflow-x: auto; scroll-snap-type: x mandatory; scrollbar-width: none; }
.ncards::-webkit-scrollbar { display: none; }
.ncard { scroll-snap-align: start; background: var(--card); display: block; border: 1px solid var(--line); }
.ncard .im { aspect-ratio: 16 / 9; overflow: hidden; }
.ncard .im img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s; }
.ncard:hover .im img { transform: scale(1.06); }
.ncard .bd { padding: 26px 24px 28px; }
.ncard h5 { font-size: 18px; font-weight: 700; line-height: 1.6; height: 58px; overflow: hidden; }
.ncard time { display: block; color: var(--text-3); font-size: 14px; margin-top: 26px; }
.nfoot { display: flex; justify-content: space-between; align-items: center; margin-top: 40px; }
.arrows { display: flex; gap: 10px; }
.arrows button { width: 36px; height: 36px; border-radius: 2px; background: var(--accent); color: #062019; font-size: 20px; font-weight: 900; line-height: 1; }
.arrows button:hover { filter: brightness(1.1); }

/* ---------- 页脚：联系我们条 + 链接区 ---------- */
.contact { position: relative; height: 300px; overflow: hidden; display: flex; align-items: center; }
.contact .bg { position: absolute; inset: 0; }
.contact .bg img { width: 100%; height: 100%; object-fit: cover; }
.contact .bg::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, #000 0%, rgba(0, 0, 0, .75) 40%, rgba(0, 0, 0, .45)); }
.contact .container { position: relative; z-index: 2; display: flex; justify-content: space-between; align-items: center; gap: 40px; }
.contact h2 { font-size: 48px; font-weight: 900; }
.contact p { color: var(--text-2); font-size: 15px; margin: 6px 0 22px; }
.qrs { display: flex; gap: 40px; }
.qrs div { text-align: center; font-size: 13px; color: var(--text-2); line-height: 1.6; }
.qrs i { display: block; width: 112px; height: 112px; margin: 0 auto 10px; background: #fff; padding: 8px; }
.qrs i::before { content: ""; display: block; width: 100%; height: 100%; background: repeating-conic-gradient(#000 0 25%, #fff 0 50%) 0 0 / 12px 12px; opacity: .85; }
.footer { background: #000; padding: 70px 0 0; font-size: 14px; color: var(--text-3); position: relative; }
.footer::before { content: ""; position: absolute; inset: 0; background: radial-gradient(ellipse 60% 50% at 30% 30%, rgba(255, 255, 255, .04), transparent 70%); pointer-events: none; }
.footer-grid { position: relative; display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 50px; }
.footer .about p { margin: 20px 0 30px; max-width: 360px; line-height: 1.9; }
.footer .about li { color: #ddd; padding: 3px 0; }
.footer h6 { font-size: 16px; color: var(--ink); margin-bottom: 18px; font-weight: 700; }
.footer li { padding: 6px 0; }
.footer li a:hover { color: #fff; }
.footer-bottom { position: relative; border-top: 1px solid var(--line); padding: 20px 0 26px; font-size: 12px; display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.footer-bottom a:hover { color: #fff; }

/* ---------- 子页 ---------- */
.page-hero { position: relative; height: 72vh; min-height: 540px; display: flex; align-items: center; overflow: hidden; }
.page-hero .slide-media { position: absolute; inset: 0; }
.page-hero .container { position: relative; z-index: 2; max-width: 1440px; }
.page-hero .state { font-size: 15px; color: var(--ink); font-weight: 700; letter-spacing: 2px; margin-bottom: 18px; }
.page-hero h1 { font-size: clamp(36px, 5vw, 72px); font-weight: 900; line-height: 1.2; }
.page-hero .sub { font-size: clamp(17px, 1.8vw, 26px); margin: 22px 0 60px; max-width: 900px; font-weight: 500; }

/* 左右图文大段 */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.split + .split { margin-top: 110px; }
.split.rev .split-pic { order: 2; }
.split-pic { aspect-ratio: 4 / 3; overflow: hidden; }
.split-pic img { width: 100%; height: 100%; object-fit: cover; }
.split h3 { font-size: 36px; font-weight: 900; line-height: 1.3; margin-bottom: 22px; }
.split h3 small { display: block; font-size: 16px; color: var(--ink); font-weight: 700; letter-spacing: 3px; margin-bottom: 12px; }
.split p { color: var(--text-2); font-size: 16px; line-height: 1.9; margin-bottom: 26px; }
.split ul li { padding: 12px 0; border-top: 1px solid var(--line); font-size: 15px; display: flex; gap: 16px; }
.split ul li b { min-width: 120px; }
.split ul li span { color: var(--text-3); }

/* 大号数字四列 */
.nums { display: grid; grid-template-columns: repeat(4, 1fr); text-align: center; }
.nums div { padding: 10px 20px; border-left: 1px solid var(--line); }
.nums div:first-child { border-left: 0; }
.nums b { display: block; font-size: 56px; font-weight: 900; line-height: 1.1; }
.nums b small { font-size: 20px; margin-left: 4px; font-weight: 700; }
.nums span { color: var(--text-2); font-size: 15px; }

/* 流程（横向时间轴） */
.flow { display: grid; grid-template-columns: repeat(5, 1fr); position: relative; text-align: center; }
.flow::before { content: ""; position: absolute; left: 10%; right: 10%; top: 25px; height: 1px; background: var(--line-strong); }
.flow > div { position: relative; padding: 0 14px; }
.flow i { display: grid; place-items: center; width: 50px; height: 50px; margin: 0 auto 22px; border-radius: 50%; background: var(--surface); border: 1px solid var(--text); font-style: normal; font-weight: 900; font-size: 18px; position: relative; }
.flow > div:nth-child(3) i, .flow > div:nth-child(2) i { background: var(--accent); color: #062019; border-color: var(--accent); }
.flow b { display: block; font-size: 20px; margin-bottom: 8px; }
.flow span { font-size: 14px; color: var(--text-3); line-height: 1.8; }
.flow em { display: block; font-style: normal; font-size: 13px; color: var(--ink); margin-top: 8px; }

/* 价格：三列平铺 */
.plans { display: grid; grid-template-columns: repeat(3, 1fr); }
.plan { padding: 50px 40px 54px; border-left: 1px solid var(--line); display: flex; flex-direction: column; }
.plan:first-child { border-left: 0; }
.plan.hl { background: linear-gradient(180deg, #0b0b0b, #0a3e33); }
.plan .nm { font-size: 24px; font-weight: 900; }
.plan .pr { font-size: 40px; font-weight: 900; margin: 18px 0 6px; }
.plan .ds { color: var(--text-2); font-size: 14px; min-height: 48px; margin-bottom: 26px; }
.plan ul { flex: 1; margin-bottom: 34px; }
.plan li { padding: 10px 0; border-top: 1px solid var(--line); font-size: 15px; color: var(--text-2); }
.plan.hl .nm { color: var(--ink); }

/* 报告样张 */
.paper { background: #fff; color: #111; padding: 34px 36px 30px; font-size: 13px; position: relative; box-shadow: 0 12px 40px rgba(0, 0, 0, .12); }
.paper .ph { display: flex; justify-content: space-between; border-bottom: 2px solid #111; padding-bottom: 10px; margin-bottom: 18px; font-size: 12px; color: #555; }
.paper h5 { font-size: 20px; margin-bottom: 4px; }
.paper .s { color: #666; margin-bottom: 18px; }
.bars { display: grid; gap: 9px; margin-bottom: 18px; }
.bar { display: grid; grid-template-columns: 80px 1fr 34px; gap: 10px; align-items: center; font-size: 12px; }
.bar i { height: 8px; background: #e9ecef; position: relative; }
.bar i::after { content: ""; position: absolute; inset: 0 auto 0 0; width: var(--v); background: #12b394; }
.bar b { text-align: right; }
.paper .concl { background: #f3f6f5; border-left: 3px solid #12b394; padding: 10px 12px; font-size: 12.5px; }
.paper .g { display: inline-block; font-size: 11px; padding: 0 6px; background: #111; color: #fff; margin-right: 6px; }
.paper .wm { position: absolute; right: 20px; bottom: 12px; font-size: 11px; color: #aaa; }

/* 工作台界面示意 */
.screen { border: 1px solid #333; background: #0d0d0d; box-shadow: 0 40px 120px rgba(30, 214, 176, .12); }
.screen .chrome { height: 34px; display: flex; align-items: center; gap: 6px; padding: 0 14px; border-bottom: 1px solid #222; }
.screen .chrome i { width: 10px; height: 10px; border-radius: 50%; background: #333; }
.screen .chrome em { font-style: normal; font-size: 12px; color: var(--text-3); margin-left: 10px; }
.wb { display: grid; grid-template-columns: 190px 1fr 280px; min-height: 440px; font-size: 13px; }
.wb-side { border-right: 1px solid #222; padding: 14px 10px; }
.wb-side small { display: block; font-size: 11px; color: #666; margin: 14px 10px 6px; }
.wb-side a { display: block; padding: 7px 10px; color: #aaa; }
.wb-side a.on { color: var(--ink); background: rgba(30, 214, 176, .1); }
.wb-main { padding: 20px 24px; }
.wb-main h6 { font-size: 15px; margin-bottom: 14px; display: flex; justify-content: space-between; }
.wb-main h6 span { font-weight: 400; color: #666; font-size: 12px; }
.kpis { display: grid; grid-template-columns: repeat(3, 1fr); border: 1px solid #222; margin-bottom: 16px; }
.kpis div { padding: 14px 16px; border-left: 1px solid #222; }
.kpis div:first-child { border-left: 0; }
.kpis small { display: block; color: #777; font-size: 11px; }
.kpis b { font-size: 20px; }
.kpis em { font-style: normal; font-size: 11px; margin-left: 6px; color: var(--ink); }
.kpis em.dn { color: #ff7a6b; }
.wbt { width: 100%; border-collapse: collapse; }
.wbt th, .wbt td { text-align: left; padding: 9px 8px; border-bottom: 1px solid #222; font-weight: 400; }
.wbt th { color: #666; font-size: 11px; }
.st { font-size: 12px; }
.st.ok { color: var(--ink); } .st.warn { color: #f5b13d; } .st.bad { color: #ff7a6b; }
.wb-ai { border-left: 1px solid #222; padding: 16px; display: flex; flex-direction: column; gap: 12px; }
.wb-ai .who { font-size: 12px; color: var(--ink); }
.msg { padding: 10px 12px; background: #1a1a1a; color: #bbb; font-size: 12.5px; line-height: 1.7; }
.msg.me { background: rgba(30, 214, 176, .12); color: #fff; align-self: flex-end; }
.msg small { display: block; margin-top: 6px; color: #666; font-size: 11px; }

/* 矩阵表 */
.matrix-table { overflow-x: auto; }
.matrix-table table { width: 100%; min-width: 900px; border-collapse: collapse; font-size: 14px; }
.matrix-table th, .matrix-table td { padding: 16px 14px; border-bottom: 1px solid var(--line); text-align: center; }
.matrix-table thead th { font-size: 16px; font-weight: 900; font-style: italic; }
.matrix-table tbody th { text-align: left; font-weight: 700; white-space: nowrap; }
.matrix-table td { color: var(--text-3); }
.matrix-table td.on { color: #fff; font-weight: 700; background: rgba(30, 214, 176, .14); }
.matrix-table th.hl { color: var(--ink); }

/* 文字三列（无图标、无边框） */
.cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 60px; text-align: center; }
.cols b { display: block; font-size: 22px; margin-bottom: 12px; }
.cols p { color: var(--text-3); font-size: 15px; line-height: 1.9; }

/* 素材页表格 */
.plain-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.plain-table th, .plain-table td { text-align: left; padding: 12px 10px; border-bottom: 1px solid var(--line); }
.plain-table th { color: var(--text-3); font-weight: 400; }
.plain-table a { color: var(--ink); }

/* ---------- 弹窗 ---------- */
.modal { position: fixed; inset: 0; z-index: 200; display: none; align-items: center; justify-content: center; background: rgba(0, 0, 0, .7); padding: 16px; }
.modal.open { display: flex; }
.modal-box { width: 100%; max-width: 440px; background: #fff; color: #111; border: 1px solid #e3e3e3; padding: 34px 32px; position: relative; }
.modal-box h3 { font-size: 22px; margin-bottom: 6px; }
.modal-box > p { color: var(--text-3); font-size: 14px; margin-bottom: 22px; }
.modal-close { position: absolute; right: 16px; top: 10px; font-size: 26px; color: #777; }
.field { display: block; margin-bottom: 14px; }
.field span { display: block; font-size: 13px; color: var(--text-2); margin-bottom: 6px; }
.field input, .field select { width: 100%; height: 40px; padding: 0 12px; background: #fff; border: 1px solid #c9c9c9; color: #111; font: inherit; font-size: 14px; }
.field input:focus, .field select:focus { outline: none; border-color: var(--accent); }
.pay { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin: 6px 0 18px; }
.pay div { text-align: center; font-size: 13px; color: var(--text-2); }
.pay i { display: block; width: 120px; height: 120px; margin: 0 auto 8px; background: #fff; padding: 8px; }
.pay i::before { content: ""; display: block; width: 100%; height: 100%; background: repeating-conic-gradient(#000 0 25%, #fff 0 50%) 0 0 / 12px 12px; opacity: .85; }
.note { font-size: 12px; color: #777; }
.toast { position: fixed; left: 50%; bottom: 40px; transform: translate(-50%, 20px); background: #111; border: 1px solid #333; color: #fff; padding: 12px 22px; opacity: 0; transition: .3s; z-index: 300; font-size: 14px; }
.toast.show { opacity: 1; transform: translate(-50%, 0); }

/* 入场动画（淡入上移） */
.reveal { opacity: 0; transform: translateY(30px); transition: opacity .8s, transform .8s; }
.reveal.in { opacity: 1; transform: none; }

/* ---------- 响应式 ---------- */
@media (max-width: 1180px) {
  .nav-links > li > a { padding: 0 12px; font-size: 14px; }
  .pcards { grid-template-columns: 1fr 1fr; }
  .wb { grid-template-columns: 170px 1fr; }
  .wb-ai { display: none; }
}
@media (max-width: 900px) {
  .container { padding: 0 16px; }
  .nav-links { display: none; }
  .menu-btn { display: block; }
  .nav .container { justify-content: space-between; }
  .nav-pill { margin-left: auto; }
  .nav.open .nav-links { display: flex; flex-direction: column; justify-content: flex-start; position: fixed; top: var(--nav-h); left: 0; right: 0; bottom: 0; height: auto; background: #000; padding: 10px 16px; overflow-y: auto; gap: 0; }
  .nav.open .nav-links > li { height: auto; }
  .nav.open .nav-links > li > a { height: 56px; padding: 0 4px; border-bottom: 1px solid var(--line); font-size: 16px; }
  .drop { display: none; }
  .only-d { display: none !important; }
  .only-m { display: block !important; }
  .slide .container { padding-top: var(--nav-h); }
  .slide .brand { font-size: 28px; margin-bottom: 18px; }
  .slide .brand i { width: 44px; height: 44px; font-size: 20px; }
  .slide .sub { margin: 16px 0 40px; }
  .block { padding: 72px 0; }
  .title { margin-bottom: 40px; }
  .title h2, .mission h2 { font-size: 26px; }
  .title .en { font-size: 22px; }
  .mission { min-height: 600px; padding-top: 100px; }
  .values { grid-template-columns: 1fr; gap: 56px; }
  .value h3 { font-size: 32px; margin-top: 24px; }
  .value .three { gap: 10px; }
  .pcards { grid-template-columns: 1fr; gap: 14px; }
  .pcard { height: 360px; }
  .pcard .hover { opacity: 1; transform: none; }
  .roadmap { grid-template-columns: 1fr; }
  .roadmap::after { left: 9px; right: auto; top: 0; bottom: 0; width: 1px; height: auto; }
  .rm { display: grid; grid-template-columns: 90px 1fr; gap: 2px 16px; padding: 22px 12px 22px 36px; text-align: left; background: linear-gradient(90deg, #000, #072c24) !important; border-bottom: 1px solid #000; }
  .rm.hl { background: linear-gradient(90deg, #000, #17a386) !important; }
  .rm .say { grid-column: 2; grid-row: 1 / span 5; margin: 0; min-height: 0; }
  .rm .kw { min-height: 0; }
  .rm .yr { margin-top: 4px; font-size: 15px; }
  .rm::after, .rm.hl::after { left: 5px; margin: 0; top: 30px; bottom: auto; }
  .ncards { grid-auto-columns: 84%; gap: 16px; }
  .contact { height: auto; padding: 56px 0; }
  .contact .container { flex-direction: column; align-items: flex-start; }
  .contact h2 { font-size: 34px; }
  .qrs { gap: 24px; }
  .qrs i { width: 92px; height: 92px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer .about { grid-column: 1 / -1; }
  .split { grid-template-columns: 1fr; gap: 30px; }
  .split.rev .split-pic { order: 0; }
  .split + .split { margin-top: 70px; }
  .split h3 { font-size: 28px; }
  .nums { grid-template-columns: 1fr 1fr; row-gap: 30px; }
  .nums div:nth-child(3) { border-left: 0; }
  .nums b { font-size: 40px; }
  .flow { grid-template-columns: 1fr; text-align: left; gap: 26px; }
  .flow::before { left: 25px; right: auto; top: 0; bottom: 0; width: 1px; height: auto; }
  .flow > div { display: grid; grid-template-columns: 50px 1fr; gap: 0 18px; padding: 0; }
  .flow i { margin: 0; grid-row: span 3; }
  .plans { grid-template-columns: 1fr; }
  .plan { border-left: 0; border-top: 1px solid var(--line); padding: 36px 20px; }
  .wb { grid-template-columns: 1fr; }
  .wb-side { display: none; }
  .cols { grid-template-columns: 1fr; gap: 36px; }
  .page-hero .sub { margin-bottom: 40px; }
}
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}
@media (max-width: 900px) { .flow[style] { grid-template-columns: 1fr !important; } }
/* 使命区：无图，青绿“地平线”辉光（呼应 51WORLD 地球辉光） */
.mission-bg.horizon { background: #000; overflow: hidden; }
.mission-bg.horizon::before { content: ""; position: absolute; left: 50%; bottom: -1180px; width: 2000px; height: 1500px; margin-left: -1000px; border-radius: 50%;
  background: radial-gradient(circle at 50% 0%, #0d2a24 0%, #050c0a 40%, #000 70%);
  box-shadow: 0 -10px 60px rgba(30, 214, 176, .65), 0 -40px 160px rgba(30, 214, 176, .35), inset 0 18px 40px rgba(30, 214, 176, .45); }
.mission-bg.horizon::after { background: radial-gradient(ellipse 60% 30% at 50% 78%, rgba(30, 214, 176, .25), transparent 70%); }
@media (max-width: 900px) { .mission-bg.horizon::before { width: 1200px; margin-left: -600px; bottom: -760px; height: 1000px; } }
/* 导航直接罗列产品（7 项），窄屏提前收进菜单 */
.nav-links > li > a { padding: 0 16px; }
@media (max-width: 1280px) { .nav-links > li > a { padding: 0 10px; font-size: 14px; } .logo { font-size: 17px; } }
@media (max-width: 1100px) {
  .nav-links { display: none; }
  .menu-btn { display: block; }
  .nav .container { justify-content: space-between; }
  .nav-pill { margin-left: auto; }
  .nav.open .nav-links { display: flex; flex-direction: column; justify-content: flex-start; position: fixed; top: var(--nav-h); left: 0; right: 0; bottom: 0; height: auto; background: #000; padding: 10px 16px; overflow-y: auto; gap: 0; }
  .nav.open .nav-links > li { height: auto; }
  .nav.open .nav-links > li > a { height: 56px; padding: 0 4px; border-bottom: 1px solid var(--line); font-size: 16px; }
  .drop { display: none; }
}
/* Logo：双峰 */
.logo-img { width: 38px; height: 38px; }
.slide .brand img { width: 72px; height: 72px; }
@media (max-width: 900px) { .slide .brand img { width: 48px; height: 48px; } }
/* ---------- 2026-11-06 新定位（极增商界）新增组件 ---------- */
.cols.four { grid-template-columns: repeat(4, 1fr); gap: 40px; }
.cols.left { text-align: left; }
.cols .tag { display: inline-block; font-size: 13px; color: var(--ink); letter-spacing: 2px; margin-bottom: 10px; }
.plan .who { font-size: 13px; color: var(--ink); letter-spacing: 1px; margin-top: 6px; }
.lead-note { text-align: center; color: var(--text-3); font-size: 14px; margin-top: 30px; }
/* 企微 / 钉钉对话示意（深色） */
.phones { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.phone { border: 1px solid #2a2a2a; border-radius: 22px; background: #0d0d0d; padding: 0 0 18px; overflow: hidden; box-shadow: 0 18px 50px rgba(0, 0, 0, .18); }
.phone .ph-top { height: 48px; display: flex; align-items: center; justify-content: center; border-bottom: 1px solid #222; font-size: 14px; font-weight: 700; position: relative; }
.phone .ph-top em { position: absolute; right: 14px; font-style: normal; font-size: 11px; color: var(--text-3); font-weight: 400; }
.phone .ph-cap { padding: 14px 16px 4px; font-size: 13px; color: var(--ink); letter-spacing: 1px; }
.bub { margin: 10px 14px 0; padding: 10px 12px; border-radius: 10px; font-size: 13px; line-height: 1.75; background: #1a1a1a; color: #e6e6e6; max-width: 88%; }
.bub b { color: #fff; }
.bub .r { color: #ff7a6b; font-weight: 700; }
.bub.me { margin-left: auto; background: #0c3d33; color: #dff; }
.bub.card { padding: 0; overflow: hidden; border: 1px solid #2c2c2c; }
.bub.card .ct { padding: 8px 12px; background: #2a2210; color: #f0c56b; font-size: 12px; font-weight: 700; }
.bub.card .cb { padding: 10px 12px; }
.bub.card .cbtn { display: flex; border-top: 1px solid #2c2c2c; }
.bub.card .cbtn span { flex: 1; text-align: center; padding: 8px 0; font-size: 12px; color: var(--text-2); border-right: 1px solid #2c2c2c; }
.bub.card .cbtn span:first-child { color: var(--ink); font-weight: 700; }
.bub.card .cbtn span:last-child { border-right: 0; }
.bub small { display: block; color: var(--text-3); font-size: 11px; margin-top: 4px; }
@media (max-width: 1180px) { .cols.four { grid-template-columns: 1fr 1fr; } .phones { grid-template-columns: 1fr 1fr; } }
@media (max-width: 900px) { .cols.four { grid-template-columns: 1fr; gap: 30px; } .phones { grid-template-columns: 1fr; } }

/* ---------- 2026-11-09 v4.1：按英伟达官网比例，黑色只留首屏与页脚 ---------- */
.nav { background: #fff; color: #111; border-bottom: 1px solid rgba(0, 0, 0, .08); }
.drop { background: rgba(255, 255, 255, .98); box-shadow: 0 16px 40px rgba(0, 0, 0, .08); border-top: 1px solid rgba(0, 0, 0, .06); }
.menu-btn span { background: #111; }
.nav.open .nav-links { background: #fff !important; }
.block-dark2 { --surface: #e7eaed; }
.block-black { background: var(--surface); }
/* 使命区改为浅色 */
.mission { background: #fff; min-height: 0; padding: 120px 0 130px; }
.mission-bg.horizon { background: radial-gradient(ellipse 70% 60% at 50% 120%, rgba(30, 214, 176, .16), transparent 70%), #fff; }
.mission-bg.horizon::before { display: none; }
.mission-bg.horizon::after { content: none; }
/* 路线图改为浅色 */
.rm:nth-child(1) { background: linear-gradient(180deg, #fff 30%, #eefaf6); }
.rm:nth-child(2) { background: linear-gradient(180deg, #fff 30%, #def5ee); }
.rm:nth-child(3) { background: linear-gradient(180deg, #fff 30%, #cdf0e5); }
.rm:nth-child(4) { background: linear-gradient(180deg, #fff 30%, #bbebdc); }
.rm:nth-child(5) { background: linear-gradient(180deg, #fff 30%, #a9e5d3); }
.rm.hl { background: linear-gradient(180deg, #fff 20%, #1ed6b0) !important; }
.rm .say { border-color: var(--line-strong); color: var(--text-2); background: #fff; }
.rm.hl .code, .rm.hl .nm { color: #0b6e5c; }
.rm.hl .say { border-color: #0b8a72; }
.rm::after, .rm.hl::after { background: #111; }
.rm.hl::after { box-shadow: 0 0 0 5px rgba(0, 0, 0, .12); }
.roadmap::after { background: var(--line-strong); }
@media (max-width: 900px) {
  .rm { background: linear-gradient(90deg, #fff, #def5ee) !important; border-bottom: 1px solid #fff; }
  .rm.hl { background: linear-gradient(90deg, #fff, #a9e5d3) !important; }
}
/* 底部（联系条 + 页脚）整体黑色，联系条不用暗图 */
.contact { background: #000; border-bottom: 1px solid rgba(255, 255, 255, .1); --text: #fff; --text-2: #bdbdbd; --text-3: #8a8a8a; --line: rgba(255, 255, 255, .14); --ink: #1ed6b0; color: #fff; }
.contact .bg { display: none; }
/* 价格高亮卡改为白卡 + 顶部色条 */
.plan.hl { background: #fff; box-shadow: 0 12px 36px rgba(0, 0, 0, .08); border-top: 3px solid var(--accent); }
.plan.hl .nm { color: var(--ink); }
/* 卡片：白底圆角 + 轻阴影 */
.ncard { border-radius: 8px; overflow: hidden; border: 1px solid rgba(0, 0, 0, .08); box-shadow: 0 4px 16px rgba(0, 0, 0, .05); background: #fff; }