/* ToDesk aa —— 玻璃视窗 · 云影远程
   色调:冷白微青底 + 青碧 teal #0E7490 + 亮青 #06B6D4 / #22D3EE + 深石板 #083344。
   玻璃拟态 + 衬线标题 + 满幅虚化摄影 hero。弃玫红/靛紫/翡翠绿/琥珀橙/深红墨纯渐变。 */
:root {
  --bg: #f4fafb;
  --bg-soft: #e9f4f5;
  --brand: #0e7490;
  --brand-dark: #155e75;
  --brand-2: #06b6d4;
  --brand-3: #22d3ee;
  --deep: #083344;
  --deep-2: #0b3c50;
  --ink: #0f2a33;
  --muted: #5b7683;
  --line: #dbeaec;
  --ok: #10b981;
  --amber: #f59e0b;
  --radius: 16px;
  --glass: rgba(255, 255, 255, .58);
  --glass-strong: rgba(255, 255, 255, .78);
  --glass-border: rgba(255, 255, 255, .72);
  --glass-line: rgba(14, 116, 144, .14);
  --shadow: 0 18px 44px rgba(8, 51, 68, .10);
  --shadow-sm: 0 6px 18px rgba(8, 51, 68, .08);
  --sans: "Segoe UI", "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
  --serif: Georgia, "Times New Roman", "Noto Serif SC", "Songti SC", "SimSun", serif;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--sans); color: var(--ink); background: var(--bg);
  line-height: 1.75; font-size: 16px; -webkit-font-smoothing: antialiased;
}
a { color: var(--brand-dark); text-decoration: none; }
a:hover { color: var(--brand); }
img { max-width: 100%; display: block; }
h1, h2, h3, h4 { font-family: var(--serif); line-height: 1.28; font-weight: 700; letter-spacing: .2px; }
.wrap { max-width: 1160px; margin: 0 auto; padding: 0 20px; }
.wrap-wide { max-width: 1240px; margin: 0 auto; padding: 0 24px; }
.hl { color: var(--brand); }

/* ---------- 玻璃拟态通用 ---------- */
.glass {
  background: var(--glass);
  backdrop-filter: blur(16px) saturate(1.2);
  -webkit-backdrop-filter: blur(16px) saturate(1.2);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-sm);
}

/* ---------- 顶部导航(玻璃拟态粘性栏) ---------- */
.hd {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, .72);
  backdrop-filter: blur(14px) saturate(1.3);
  -webkit-backdrop-filter: blur(14px) saturate(1.3);
  border-bottom: 1px solid var(--glass-line);
  box-shadow: 0 1px 0 rgba(255, 255, 255, .6) inset;
}
.hd-in { display: flex; align-items: center; gap: 20px; height: 68px; }
.brand { display: flex; align-items: center; gap: 11px; color: var(--ink); }
.brand-logo { width: 38px; height: 38px; border-radius: 10px; flex: 0 0 auto; box-shadow: 0 4px 12px rgba(14, 116, 144, .25); }
.brand-word { display: flex; flex-direction: column; line-height: 1.15; font-weight: 800; font-size: 19px; font-family: var(--serif); }
.brand-word small { font-weight: 600; font-size: 11px; color: var(--muted); letter-spacing: .5px; font-family: var(--sans); }
.nav { display: flex; align-items: center; gap: 4px; margin-left: auto; }
.nav-link { padding: 8px 12px; border-radius: 10px; color: var(--ink); font-weight: 600; font-size: 15px; white-space: nowrap; }
.nav-link:hover { background: rgba(14, 116, 144, .08); color: var(--brand-dark); }
.nav-link.active { color: #fff; background: linear-gradient(120deg, var(--brand), var(--brand-2)); box-shadow: 0 6px 16px rgba(6, 182, 212, .3); }
.nav-cta { padding: 9px 20px; border-radius: 999px; background: linear-gradient(120deg, var(--brand), var(--brand-2)); color: #fff; font-weight: 700; font-size: 15px; white-space: nowrap; box-shadow: 0 8px 20px rgba(14, 116, 144, .28); }
.nav-cta:hover { color: #fff; box-shadow: 0 10px 26px rgba(14, 116, 144, .4); transform: translateY(-1px); }
.menu-btn { display: none; margin-left: auto; background: rgba(255,255,255,.7); border: 1px solid var(--glass-line); border-radius: 10px; font-size: 20px; width: 40px; height: 40px; cursor: pointer; color: var(--ink); }

/* ---------- hero(满幅虚化摄影 + 玻璃卡) ---------- */
.hero { position: relative; overflow: hidden; color: var(--ink); }
.hero-bg { position: absolute; inset: -34px; background-size: cover; background-position: center; filter: blur(16px) saturate(1.08); transform: scale(1.05); z-index: 0; }
.hero::before { content: ""; position: absolute; inset: 0; z-index: 1; background: linear-gradient(115deg, rgba(241, 250, 251, .9) 4%, rgba(241, 250, 251, .5) 52%, rgba(236, 247, 249, .82) 100%); }
.hero::after { content: ""; position: absolute; z-index: 1; width: 560px; height: 560px; right: -140px; top: -140px; border-radius: 50%; background: radial-gradient(circle, rgba(34, 211, 238, .28), transparent 65%); filter: blur(20px); }
.hero-in { position: relative; z-index: 2; display: grid; grid-template-columns: 1.08fr 1fr; gap: 48px; align-items: center; padding-top: 74px; padding-bottom: 74px; }
.kicker { display: inline-flex; align-items: center; gap: 9px; font-size: 13px; letter-spacing: 2.5px; color: var(--brand-dark); font-weight: 700; text-transform: uppercase; }
.kicker .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--brand-2); box-shadow: 0 0 0 4px rgba(6, 182, 212, .2); }
.hero-title { font-family: var(--serif); font-size: 50px; font-weight: 700; line-height: 1.15; margin: 16px 0 14px; color: var(--deep); }
.hero-title .hl { color: var(--brand); background: linear-gradient(120deg, var(--brand), var(--brand-2)); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.hero-sub { font-size: 17px; color: #39565f; max-width: 540px; }
.hero-cta-row { display: flex; align-items: center; gap: 14px; margin-top: 26px; flex-wrap: wrap; }
.hero-note { margin-top: 16px; color: #4c6a74; font-size: 14px; display: flex; align-items: center; gap: 8px; }
.hero-note .ico { color: var(--ok); font-weight: 700; }
.ghost-link { color: var(--brand-dark); text-decoration: underline; }
.btn { display: inline-flex; align-items: center; justify-content: center; padding: 13px 28px; border-radius: 12px; font-weight: 700; font-size: 16px; cursor: pointer; border: none; font-family: var(--sans); transition: transform .16s, box-shadow .16s; }
.btn-cta { background: linear-gradient(120deg, var(--brand), var(--brand-2)); color: #fff; box-shadow: 0 10px 26px rgba(14, 116, 144, .32); }
.btn-cta:hover { color: #fff; transform: translateY(-2px); box-shadow: 0 14px 32px rgba(14, 116, 144, .42); }
.btn-ghost { background: rgba(255, 255, 255, .6); color: var(--deep); border: 1px solid var(--glass-line); backdrop-filter: blur(8px); }
.btn-ghost:hover { background: rgba(255, 255, 255, .9); color: var(--brand-dark); }
.hero-search { display: flex; align-items: center; background: rgba(255,255,255,.7); backdrop-filter: blur(8px); border: 1px solid var(--glass-line); border-radius: 12px; padding: 4px 4px 4px 16px; flex: 1; min-width: 220px; max-width: 340px; }
.hero-search input { flex: 1; border: none; outline: none; font-size: 15px; color: var(--ink); background: transparent; }
.hero-search button { background: linear-gradient(120deg, var(--brand), var(--brand-2)); color: #fff; border: none; border-radius: 9px; width: 40px; height: 40px; cursor: pointer; display: flex; align-items: center; justify-content: center; }
.hero-copy { display: flex; flex-direction: column; min-width: 0; }

/* ---------- 玻璃连接控制台卡 ---------- */
.hero-panel { background: var(--glass-strong); backdrop-filter: blur(18px) saturate(1.2); -webkit-backdrop-filter: blur(18px) saturate(1.2); border: 1px solid var(--glass-border); color: var(--ink); border-radius: 20px; box-shadow: 0 30px 70px rgba(8, 51, 68, .18); padding: 24px 24px 20px; position: relative; overflow: hidden; }
.hero-panel::before { content: ""; position: absolute; left: 0; top: 0; height: 4px; width: 100%; background: linear-gradient(90deg, var(--brand), var(--brand-2), var(--brand-3)); }
.conn-head { display: flex; align-items: center; gap: 10px; padding-bottom: 12px; border-bottom: 1px dashed var(--glass-line); }
.conn-ico { width: 36px; height: 36px; border-radius: 10px; background: linear-gradient(135deg, rgba(14,116,144,.16), rgba(34,211,238,.2)); color: var(--brand-dark); display: flex; align-items: center; justify-content: center; }
.conn-ico svg { width: 21px; height: 21px; }
.conn-title { font-family: var(--serif); font-weight: 700; font-size: 18px; color: var(--deep); }
.conn-live { margin-left: auto; background: rgba(16, 185, 129, .13); color: #0b8a63; font-weight: 700; font-size: 13px; padding: 4px 12px; border-radius: 999px; letter-spacing: 1px; display: inline-flex; align-items: center; gap: 6px; }
.conn-live::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--ok); box-shadow: 0 0 0 3px rgba(16,185,129,.2); }
.conn-code { display: flex; align-items: center; gap: 12px; padding: 14px 0 6px; }
.conn-code-label { font-size: 13px; color: var(--muted); }
.conn-code-num { font-family: var(--serif); font-size: 28px; font-weight: 700; color: var(--deep); letter-spacing: 2px; }
.conn-pwd { margin-left: auto; font-size: 13px; color: var(--brand-dark); background: rgba(14, 116, 144, .1); padding: 4px 11px; border-radius: 999px; font-weight: 700; }
.conn-link { display: flex; align-items: center; gap: 8px; padding: 8px 0 16px; }
.cd { display: flex; align-items: center; gap: 9px; background: rgba(14, 116, 144, .06); border: 1px solid var(--glass-line); border-radius: 12px; padding: 10px 14px; flex: 1; }
.cd-dot { width: 10px; height: 10px; border-radius: 50%; background: var(--brand-2); box-shadow: 0 0 0 3px rgba(6, 182, 212, .2); flex: 0 0 auto; }
.cd b { display: block; font-size: 14px; color: var(--deep); }
.cd span { font-size: 12px; color: var(--muted); }
.conn-route { display: flex; align-items: center; gap: 4px; color: var(--brand-2); }
.route-line { width: 26px; height: 2px; background: linear-gradient(90deg, var(--brand), var(--brand-3)); border-radius: 2px; }
.route-ico { display: flex; }
.route-ico svg { width: 18px; height: 18px; }
.conn-stats { display: flex; gap: 12px; border-top: 1px dashed var(--glass-line); padding-top: 14px; }
.conn-stat { flex: 1; display: flex; flex-direction: column; align-items: center; gap: 2px; }
.conn-stat b { font-family: var(--serif); font-size: 20px; font-weight: 700; color: var(--deep); }
.conn-stat span { font-size: 12px; color: var(--muted); }

/* ---------- 居中 hero + 内联连接条(无右侧面板) ---------- */
.hero-in-center { position: relative; z-index: 2; max-width: 920px; margin: 0 auto; text-align: center; padding: 88px 24px 92px; }
.hero-in-center .hero-title { font-size: 54px; }
.hero-in-center .hero-sub { margin: 0 auto; }
.connect-bar { display: flex; align-items: center; gap: 10px; max-width: 560px; margin: 28px auto 0; background: var(--glass-strong); backdrop-filter: blur(14px) saturate(1.2); -webkit-backdrop-filter: blur(14px) saturate(1.2); border: 1px solid var(--glass-border); border-radius: 14px; padding: 8px 8px 8px 18px; box-shadow: var(--shadow-sm); text-align: left; }
.cb-label { font-size: 13px; color: var(--muted); white-space: nowrap; flex: 0 0 auto; }
.connect-bar input { flex: 1; border: none; outline: none; font-size: 15px; background: transparent; color: var(--ink); min-width: 0; }
.connect-bar button { background: linear-gradient(120deg, var(--brand), var(--brand-2)); color: #fff; border: none; border-radius: 10px; padding: 11px 24px; font-weight: 700; font-size: 15px; cursor: pointer; white-space: nowrap; flex: 0 0 auto; }

/* ---------- 横向连接链路(三步 flow) ---------- */
.flow { display: flex; align-items: stretch; gap: 0; }
.flow-node { flex: 1; display: flex; flex-direction: column; align-items: center; text-align: center; gap: 9px; background: var(--glass); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border: 1px solid var(--glass-border); border-radius: 16px; padding: 26px 18px; }
.flow-ico { width: 54px; height: 54px; border-radius: 50%; background: linear-gradient(135deg, var(--brand), var(--brand-2)); color: #fff; display: flex; align-items: center; justify-content: center; box-shadow: 0 8px 22px rgba(14, 116, 144, .32); }
.flow-ico svg { width: 27px; height: 27px; }
.flow-node b { font-family: var(--serif); font-size: 19px; color: var(--deep); }
.flow-node span { font-size: 13px; color: var(--muted); max-width: 200px; }
.flow-line { flex: 0 0 64px; align-self: center; height: 2px; background: linear-gradient(90deg, var(--brand), var(--brand-3)); border-radius: 2px; position: relative; }
.flow-line::after { content: ""; position: absolute; right: -1px; top: -4px; border-left: 7px solid var(--brand-3); border-top: 5px solid transparent; border-bottom: 5px solid transparent; }

/* ---------- 横向滚动平台条 ---------- */
.hscroll { display: flex; gap: 16px; overflow-x: auto; padding: 6px 2px 18px; scroll-snap-type: x mandatory; -webkit-overflow-scrolling: touch; scrollbar-width: thin; }
.hscroll::-webkit-scrollbar { height: 8px; }
.hscroll::-webkit-scrollbar-thumb { background: rgba(14, 116, 144, .25); border-radius: 8px; }
.hscroll .plat { flex: 0 0 248px; scroll-snap-align: start; }

/* ---------- bento 混合网格(1 大 + 4 小) ---------- */
.bento { display: grid; grid-template-columns: repeat(4, 1fr); grid-template-rows: repeat(2, 150px); gap: 16px; }
.bento-lg { grid-column: span 2; grid-row: span 2; }
.bento-sm { grid-column: span 1; grid-row: span 1; }
.bento .tile { background: var(--glass); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border: 1px solid var(--glass-border); border-radius: 16px; padding: 22px; height: 100%; display: flex; flex-direction: column; gap: 10px; transition: transform .18s, box-shadow .18s; }
.bento .tile:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.tile-ico { width: 46px; height: 46px; border-radius: 12px; background: linear-gradient(135deg, rgba(14, 116, 144, .14), rgba(34, 211, 238, .2)); color: var(--brand-dark); display: flex; align-items: center; justify-content: center; flex: 0 0 auto; }
.tile-ico svg { width: 24px; height: 24px; }
.bento .tile b { font-family: var(--serif); font-size: 19px; color: var(--deep); }
.bento .tile p { font-size: 14px; color: var(--muted); }
.bento-sm .tile { justify-content: center; align-items: center; text-align: center; }
.bento-sm .tile b { font-size: 17px; }
.bento-lg .tile-img { flex: 1; min-height: 90px; border-radius: 12px; overflow: hidden; }
.bento-lg .tile-img img { width: 100%; height: 100%; object-fit: cover; border-radius: 12px; }

/* ---------- 通用分区 ---------- */
.sec { padding: 68px 0; position: relative; }
.sec-alt { background: linear-gradient(180deg, var(--bg-soft), #eef6f8); }
.sec-alt::before { content: ""; position: absolute; left: -120px; top: 60px; width: 360px; height: 360px; border-radius: 50%; background: radial-gradient(circle, rgba(34, 211, 238, .16), transparent 68%); filter: blur(18px); }
.sec-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 20px; margin-bottom: 32px; flex-wrap: wrap; position: relative; }
.sec-title { font-family: var(--serif); font-size: 32px; color: var(--deep); }
.sec-lead { color: var(--muted); margin-top: 8px; max-width: 560px; }
.sec-more { font-weight: 700; color: var(--brand-dark); white-space: nowrap; }
.sec-more:hover { color: var(--brand); }

/* ---------- 功能网格(玻璃) ---------- */
.feats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.feat { background: var(--glass); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border: 1px solid var(--glass-border); border-radius: var(--radius); padding: 22px; transition: transform .18s, box-shadow .18s; }
.feat:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.feat-ico { width: 46px; height: 46px; border-radius: 13px; display: flex; align-items: center; justify-content: center; margin-bottom: 14px; }
.feat-ico svg { width: 24px; height: 24px; }
.feat-ico.navy { background: rgba(8, 51, 68, .08); color: var(--deep); }
.feat-ico.blue { background: linear-gradient(135deg, rgba(14,116,144,.14), rgba(6,182,212,.2)); color: var(--brand-dark); }
.feat-ico.sky { background: linear-gradient(135deg, rgba(6,182,212,.14), rgba(34,211,238,.2)); color: var(--brand); }
.feat-t { font-weight: 800; font-size: 16px; color: var(--deep); font-family: var(--serif); }
.feat-d { font-size: 14px; color: var(--muted); margin-top: 5px; }

/* ---------- 三大核心能力 ---------- */
.models { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.model { background: var(--glass); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border: 1px solid var(--glass-border); border-radius: var(--radius); padding: 24px; }
.model-top { display: flex; align-items: center; gap: 10px; }
.model-ico { width: 42px; height: 42px; border-radius: 12px; background: linear-gradient(135deg, var(--brand), var(--brand-2)); color: #fff; display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 20px; box-shadow: 0 6px 16px rgba(14, 116, 144, .3); }
.model-t { font-family: var(--serif); font-weight: 700; font-size: 19px; color: var(--deep); }
.model-tag { margin-left: auto; font-size: 12px; color: var(--brand-dark); background: rgba(14, 116, 144, .1); padding: 2px 10px; border-radius: 999px; font-weight: 700; }
.model-d { color: var(--muted); font-size: 15px; margin: 13px 0; }
.model-stats { display: flex; flex-wrap: wrap; gap: 8px; }
.model-stats span { font-size: 13px; color: var(--muted); background: rgba(255,255,255,.6); border: 1px solid var(--glass-line); border-radius: 8px; padding: 4px 10px; }
.model-stats b { color: var(--deep); font-weight: 700; }

/* ---------- 步骤 ---------- */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.step { background: var(--glass); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border: 1px solid var(--glass-border); border-radius: var(--radius); padding: 24px; position: relative; }
.step-no { width: 36px; height: 36px; border-radius: 50%; background: linear-gradient(135deg, var(--brand), var(--brand-2)); color: #fff; font-weight: 800; display: flex; align-items: center; justify-content: center; margin-bottom: 14px; box-shadow: 0 6px 14px rgba(14, 116, 144, .3); }
.step-t { font-family: var(--serif); font-weight: 700; font-size: 18px; color: var(--deep); }
.step-d { color: var(--muted); font-size: 14px; margin-top: 7px; }

/* ---------- 平台卡片(玻璃) ---------- */
.plats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.plat { background: var(--glass); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border: 1px solid var(--glass-border); border-radius: var(--radius); padding: 22px; transition: transform .18s, box-shadow .18s; }
.plat:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.plat-ico { width: 44px; height: 44px; border-radius: 12px; background: linear-gradient(135deg, rgba(14,116,144,.14), rgba(34,211,238,.2)); color: var(--brand-dark); display: flex; align-items: center; justify-content: center; margin-bottom: 13px; }
.plat-ico svg { width: 23px; height: 23px; }
.plat-t { font-family: var(--serif); font-weight: 700; font-size: 17px; color: var(--deep); }
.plat-d { font-size: 14px; color: var(--muted); margin: 5px 0 11px; }
.plat-cta { font-weight: 700; font-size: 14px; }

/* ---------- 左右图文 ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 44px; align-items: center; }
.split.rev .split-img { order: 2; }
.split-img { position: relative; }
.split-img::before { content: ""; position: absolute; inset: 18px -18px -18px 18px; border-radius: 22px; background: linear-gradient(135deg, rgba(14,116,144,.22), rgba(34,211,238,.24)); filter: blur(24px); z-index: 0; }
.split-img img { position: relative; z-index: 1; border-radius: 18px; box-shadow: var(--shadow); border: 1px solid var(--glass-border); }
.split-txt h3 { font-family: var(--serif); font-size: 28px; color: var(--deep); margin-bottom: 13px; }
.split-txt p { color: var(--muted); margin-bottom: 13px; }

/* ---------- 卡片 ---------- */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.card { background: var(--glass); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border: 1px solid var(--glass-border); border-radius: var(--radius); overflow: hidden; display: flex; flex-direction: column; transition: transform .18s, box-shadow .18s; }
.card:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.card-img img { width: 100%; aspect-ratio: 16/9; object-fit: cover; }
.card-b { padding: 17px 19px 19px; display: flex; flex-direction: column; flex: 1; }
.card-cat { align-self: flex-start; font-size: 12px; font-weight: 700; color: var(--brand-dark); background: rgba(14, 116, 144, .1); padding: 2px 11px; border-radius: 999px; margin-bottom: 10px; }
.card-t { font-family: var(--serif); font-weight: 700; font-size: 17px; color: var(--deep); line-height: 1.4; }
.card-d { font-size: 14px; color: var(--muted); margin: 8px 0 13px; }
.card-more { margin-top: auto; font-weight: 700; font-size: 14px; }

/* ---------- FAQ ---------- */
.faq { max-width: 840px; }
.faq-item { background: var(--glass); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); border: 1px solid var(--glass-border); border-radius: 14px; margin-bottom: 10px; overflow: hidden; }
.faq-q { width: 100%; text-align: left; background: none; border: none; cursor: pointer; padding: 16px 20px; display: flex; justify-content: space-between; align-items: center; gap: 14px; font-size: 16px; font-weight: 700; color: var(--deep); font-family: var(--sans); }
.faq-q .ico { color: var(--brand); font-size: 22px; font-weight: 400; flex: 0 0 auto; }
.faq-a { display: none; padding: 0 20px 18px; color: var(--muted); font-size: 15px; }
.faq-item.open .faq-a { display: block; }
.faq-item.open .faq-q .ico { transform: rotate(45deg); }

/* ---------- CTA ---------- */
.cta { position: relative; overflow: hidden; background: linear-gradient(120deg, var(--deep), var(--deep-2)); border-radius: 22px; padding: 44px 48px; display: flex; align-items: center; justify-content: space-between; gap: 28px; flex-wrap: wrap; color: #fff; }
.cta::before { content: ""; position: absolute; right: -60px; top: -60px; width: 300px; height: 300px; border-radius: 50%; background: radial-gradient(circle, rgba(34, 211, 238, .5), transparent 65%); filter: blur(24px); }
.cta-t { font-family: var(--serif); font-size: 28px; font-weight: 700; }
.cta-d { color: #cfe9ef; margin-top: 9px; max-width: 560px; }
.cta-actions { display: flex; gap: 12px; flex-wrap: wrap; position: relative; }
.cta .btn-ghost { background: rgba(255,255,255,.12); color: #fff; border-color: rgba(255,255,255,.3); }
.cta .btn-ghost:hover { background: rgba(255,255,255,.22); color: #fff; }

/* ---------- 内页 hero(亮色玻璃) ---------- */
.page-hero { position: relative; overflow: hidden; background: linear-gradient(180deg, #e6f3f6, var(--bg)); color: var(--ink); padding: 56px 0; }
.page-hero::before { content: ""; position: absolute; right: -120px; top: -120px; width: 460px; height: 460px; border-radius: 50%; background: radial-gradient(circle, rgba(34, 211, 238, .24), transparent 65%); filter: blur(22px); }
.page-hero::after { content: ""; position: absolute; left: -140px; bottom: -160px; width: 420px; height: 420px; border-radius: 50%; background: radial-gradient(circle, rgba(14, 116, 144, .2), transparent 65%); filter: blur(22px); }
.page-hero-in { position: relative; z-index: 1; }
.page-hero .kicker { color: var(--brand-dark); }
.page-title { font-family: var(--serif); font-size: 42px; margin: 13px 0 11px; color: var(--deep); }
.page-sub { color: #39565f; font-size: 17px; max-width: 720px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }

/* ---------- 面包屑 ---------- */
.crumb { font-size: 14px; color: var(--muted); padding: 18px 0 0; }
.crumb a { color: var(--muted); }
.crumb a:hover { color: var(--brand-dark); }
.crumb span { color: var(--deep); font-weight: 600; }

/* ---------- 表格 / 提示 ---------- */
.table { background: var(--glass-strong); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); border: 1px solid var(--glass-border); border-radius: 14px; overflow: hidden; }
.table table { width: 100%; border-collapse: collapse; font-size: 15px; }
.table th { background: var(--deep); color: #fff; text-align: left; padding: 13px 16px; font-weight: 700; }
.table td { padding: 12px 16px; border-top: 1px solid var(--glass-line); color: var(--muted); }
.table td.yes { color: var(--ok); font-weight: 700; }
.table td.no { color: #c0cdd1; }
.callout { background: rgba(14, 116, 144, .08); border-left: 4px solid var(--brand); border-radius: 0 12px 12px 0; padding: 16px 18px; color: var(--ink); display: flex; gap: 12px; align-items: flex-start; }
.callout .ico { flex: 0 0 auto; width: 22px; height: 22px; border-radius: 50%; background: var(--brand); color: #fff; display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 14px; }

/* ---------- 参数网格 ---------- */
.spec-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.spec-item { display: flex; align-items: center; gap: 14px; background: var(--glass); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); border: 1px solid var(--glass-border); border-radius: 13px; padding: 17px 19px; }
.spec-item .k { flex: 0 0 84px; font-weight: 700; color: var(--deep); }
.spec-item .v { color: var(--muted); }

/* ---------- 文章双栏 ---------- */
.article-grid { display: grid; grid-template-columns: 240px 1fr; gap: 36px; align-items: start; }
.toc-nav { position: sticky; top: 88px; background: var(--glass); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border: 1px solid var(--glass-border); border-radius: 14px; padding: 20px; }
.toc-nav h4 { font-family: var(--sans); font-size: 13px; color: var(--muted); letter-spacing: 1.5px; margin-bottom: 12px; font-weight: 700; }
.toc-link { display: block; font-size: 14px; color: var(--ink); padding: 7px 0; border-bottom: 1px dashed var(--glass-line); }
.toc-link:hover { color: var(--brand-dark); }
.article-body { background: var(--glass-strong); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); border: 1px solid var(--glass-border); border-radius: 18px; padding: 36px 40px; }
.article-body h1 { font-family: var(--serif); font-size: 32px; color: var(--deep); line-height: 1.3; }
.article-meta { display: flex; align-items: center; gap: 14px; margin: 14px 0 18px; color: var(--muted); font-size: 13px; flex-wrap: wrap; }
.badge { background: rgba(14, 116, 144, .1); color: var(--brand-dark); font-weight: 700; padding: 2px 11px; border-radius: 999px; }
.article-body .lead { font-size: 17px; color: var(--ink); font-weight: 500; margin-bottom: 18px; }
.article-body h2 { font-family: var(--serif); font-size: 23px; color: var(--deep); margin: 28px 0 11px; }
.article-body h3 { font-family: var(--serif); font-size: 18px; color: var(--deep); margin: 21px 0 8px; }
.article-body p { color: #3a4c53; margin-bottom: 14px; }
.article-body img { border-radius: 14px; margin: 14px 0 8px; border: 1px solid var(--glass-border); }
.cap { font-size: 13px; color: #8aa0a9; margin: 0 0 16px; text-align: center; }
.author { display: flex; align-items: center; gap: 14px; margin-top: 30px; padding-top: 20px; border-top: 1px dashed var(--glass-line); }
.avatar { width: 46px; height: 46px; border-radius: 50%; background: linear-gradient(135deg, var(--brand), var(--brand-2)); color: #fff; font-weight: 800; font-size: 20px; display: flex; align-items: center; justify-content: center; font-family: var(--serif); }
.author b { color: var(--deep); display: block; }
.author small { color: var(--muted); }

/* ---------- 相关卡片 ---------- */
.related { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.related-card { background: var(--glass); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); border: 1px solid var(--glass-border); border-radius: 13px; padding: 17px 19px; display: flex; flex-direction: column; gap: 6px; transition: box-shadow .18s, transform .18s; }
.related-card:hover { box-shadow: var(--shadow-sm); transform: translateY(-3px); }
.related-card b { color: var(--deep); font-size: 15px; font-family: var(--serif); }
.related-card span { color: var(--muted); font-size: 13px; }

/* ---------- 搜索 ---------- */
.search-box .search-input { width: 100%; padding: 16px 20px; font-size: 17px; border: 1px solid var(--glass-border); background: var(--glass-strong); backdrop-filter: blur(8px); border-radius: 13px; outline: none; font-family: var(--sans); color: var(--ink); }
.search-box .search-input:focus { border-color: var(--brand-2); box-shadow: 0 0 0 4px rgba(6, 182, 212, .15); }

/* ---------- 404 ---------- */
.notfound { text-align: center; padding: 100px 20px; }
.notfound .code { font-family: var(--serif); font-size: 110px; font-weight: 700; color: var(--brand); line-height: 1; background: linear-gradient(120deg, var(--brand), var(--brand-3)); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.notfound h2 { font-size: 28px; color: var(--deep); margin: 14px 0 8px; }
.notfound p { color: var(--muted); margin-bottom: 24px; }

/* ---------- 页脚 ---------- */
.foot { background: var(--deep); color: #cfe9ef; margin-top: 40px; }
.foot-in { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 32px; padding-top: 54px; padding-bottom: 42px; }
.foot-brand .brand { color: #fff; margin-bottom: 14px; }
.foot-brand .brand-word small { color: #9fc7d2; }
.foot-brand p { font-size: 14px; color: #9fc7d2; max-width: 300px; }
.foot h5 { font-family: var(--serif); color: #fff; font-size: 16px; margin-bottom: 14px; letter-spacing: 1px; }
.foot-links { list-style: none; }
.foot-links li { margin-bottom: 9px; }
.foot-links a { color: #9fc7d2; font-size: 14px; }
.foot-links a:hover { color: var(--brand-3); }
.foot-copy { border-top: 1px solid rgba(255, 255, 255, .09); padding: 18px 24px; text-align: center; font-size: 13px; color: #7fa6b1; }
.foot-copy a { color: #9fc7d2; }

/* ---------- 返回顶部 ---------- */
.backtop { position: fixed; right: 24px; bottom: 24px; width: 46px; height: 46px; border-radius: 50%; background: linear-gradient(135deg, var(--brand), var(--brand-2)); color: #fff; border: none; cursor: pointer; font-size: 20px; box-shadow: var(--shadow); display: none; z-index: 40; }
.backtop.show { display: block; }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .feats, .plats { grid-template-columns: repeat(3, 1fr); }
  .nav { display: none; }
  .nav.open { display: flex; position: absolute; top: 68px; left: 0; right: 0; background: rgba(255,255,255,.96); backdrop-filter: blur(14px); flex-direction: column; align-items: stretch; padding: 12px 20px; box-shadow: var(--shadow); }
  .menu-btn { display: block; }
  .hero-in { grid-template-columns: 1fr; gap: 34px; }
  .split { grid-template-columns: 1fr; }
  .split.rev .split-img { order: 0; }
  .article-grid { grid-template-columns: 1fr; }
  .toc-nav { position: static; }
  .foot-in { grid-template-columns: 1fr 1fr; }
  .bento { grid-template-columns: repeat(2, 1fr); }
  .bento-lg { grid-column: span 2; grid-row: span 1; }
}
@media (max-width: 640px) {
  .feats, .plats, .models, .steps, .cards, .related { grid-template-columns: 1fr 1fr; }
  .hero-title { font-size: 36px; }
  .hero-in-center .hero-title { font-size: 36px; }
  .hero-in-center { padding: 60px 18px 66px; }
  .sec-title { font-size: 26px; }
  .page-title { font-size: 32px; }
  .cta { padding: 32px 26px; }
  .spec-grid { grid-template-columns: 1fr; }
  .flow { flex-direction: column; }
  .flow-line { flex: 0 0 auto; width: 2px; height: 34px; margin: 0 auto; background: linear-gradient(180deg, var(--brand), var(--brand-3)); }
  .flow-line::after { right: auto; top: auto; left: -4px; bottom: -1px; border-left: 5px solid transparent; border-right: 5px solid transparent; border-top: 7px solid var(--brand-3); border-bottom: none; }
  .bento { grid-template-columns: 1fr; grid-template-rows: none; }
  .bento-lg, .bento-sm { grid-column: span 1; grid-row: span 1; }
  .bento-lg .tile-img { min-height: 170px; }
  .connect-bar { flex-wrap: wrap; }
  .connect-bar input { flex: 1 1 100%; order: -1; }
}