/* 官网改版 v2：延续河狸云浅色品牌（橙 #F5811F + 深蓝 #1A2B4A），视频区用深色舞台托住。移动端优先。 */
:root {
  --brand: #F5811F;
  --brand-dark: #D96A0B;
  --brand-soft: #FFF3E8;
  --navy: #1A2B4A;
  --bg: #FFFFFF;
  --bg-2: #F8F9FC;
  --bg-3: #F1F3F8;
  --line: #E5E7EB;
  --line-2: #D5DAE3;
  --text: #1A2B4A;
  --text-2: #4B5563;
  --text-3: #8A94A6;
  --stage: #0D1B2A;
  --stage-2: #13253A;
  --radius: 14px;
  --max: 1240px;
  --shadow: 0 16px 48px rgba(26, 43, 74, .12);
  --font: "Noto Sans SC", -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, monospace;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { background: var(--bg); color: var(--text); font-family: var(--font); 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; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 24px; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; font-size: 14px; font-weight: 600; color: var(--brand); background: var(--brand-soft); padding: 6px 14px; border-radius: 999px; }
.eyebrow::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--brand); }
.h-xl { font-size: clamp(32px, 5.4vw, 64px); line-height: 1.15; font-weight: 900; letter-spacing: -.01em; color: var(--navy); }
.h-xl em, .h-lg em { font-style: normal; color: var(--brand); }
.h-lg { font-size: clamp(26px, 3.6vw, 42px); line-height: 1.2; font-weight: 800; color: var(--navy); }
.lead { font-size: clamp(15px, 1.5vw, 18px); color: var(--text-2); max-width: 44em; }
.muted { color: var(--text-3); }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; height: 48px; padding: 0 26px; border-radius: 10px; font-weight: 600; font-size: 16px; transition: .2s; }
.btn-primary { background: var(--brand); color: #fff; }
.btn-primary:hover { background: var(--brand-dark); transform: translateY(-1px); }
.btn-ghost { border: 2px solid var(--line); color: var(--navy); background: #fff; }
.btn-ghost:hover { border-color: var(--brand); color: var(--brand); }
section { position: relative; }

/* 顶栏 */

/* 首屏 */
.hero { padding: 120px 0 0; background: linear-gradient(180deg, #fff 0%, #FFF8F1 100%); }
.hero-top { display: grid; grid-template-columns: 1fr auto; gap: 40px; align-items: end; margin-bottom: 40px; }
.hero-top .h-xl, .hero-top .lead { margin-top: 18px; }
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; }
.stage { background: var(--stage); color: #E8EDF5; border-radius: 24px 24px 0 0; padding: 32px; }
.dual { display: grid; grid-template-columns: 240px minmax(0, 1fr); gap: 32px; align-items: start; }
.dual-pc { min-width: 0; }
.dual-label { font: 600 12px/1 var(--mono); letter-spacing: .14em; color: #8EA0B8; margin-bottom: 12px; }
.ask { border: 1px solid rgba(255, 255, 255, .12); border-radius: 16px; overflow: hidden; background: var(--stage-2); }
.ask-stage { position: relative; background: #000; aspect-ratio: 16 / 9; }
.ask-stage video, .ask-stage .ph { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: contain; }
.ask-cap { display: flex; justify-content: space-between; align-items: center; gap: 20px; padding: 14px 18px; border-bottom: 1px solid rgba(255, 255, 255, .08); min-height: 58px; }
.ask-cap-q { color: #fff; font-size: 15px; font-weight: 600; display: flex; gap: 10px; align-items: baseline; min-width: 0; }
.ask-cap-q span { flex: none; font-size: 12px; font-weight: 700; color: #fff; background: var(--brand); border-radius: 6px; padding: 2px 7px; }
.ask-cap-r { color: #9FB0C6; font-size: 13px; text-align: right; flex: none; max-width: 40%; }
.ask-list { display: flex; flex-wrap: wrap; gap: 8px; padding: 14px 18px 16px; }
.ask-q { padding: 7px 14px; border-radius: 999px; font-size: 13px; color: #B9C5D6; border: 1px solid rgba(255, 255, 255, .14); transition: .15s; white-space: nowrap; }
.ask-q:hover { color: #fff; border-color: rgba(255, 255, 255, .3); }
.ask-q.on { background: var(--brand); border-color: var(--brand); color: #fff; }
.ask-note { font-size: 12px; color: #7F8FA6; margin-top: 12px; }

/* 手机外壳 */
.phone { position: relative; border-radius: 40px; padding: 9px; background: #1d232c; box-shadow: 0 24px 60px rgba(0, 0, 0, .45), inset 0 0 0 1px rgba(255, 255, 255, .08); }
.phone-screen { position: relative; aspect-ratio: 9 / 19.5; border-radius: 31px; overflow: hidden; background: #000; }
.phone-screen video, .phone-screen .ph { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.phone-cap { position: absolute; left: 10px; right: 10px; bottom: 12px; text-align: center; font-size: 12px; color: #fff; background: rgba(0, 0, 0, .55); padding: 6px 8px; border-radius: 10px; }

/* 占位 */
.ph { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 8px; color: #7F8FA6; background: repeating-linear-gradient(135deg, #0f1b29 0 14px, #12202f 14px 28px); text-align: center; padding: 16px; }
.ph b { color: #C9D3E0; font-size: 15px; font-weight: 600; }
.ph small { font-size: 12px; }

/* 区块 */
.day { padding: 96px 0; }
.day-alt { background: var(--bg-2); }
.day-head { margin-bottom: 40px; }
.day-head .h-lg, .day-head .lead { margin-top: 14px; }

/* 卡片 */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; align-items: stretch; }
.card { border-radius: var(--radius); border: 1px solid var(--line); background: #fff; overflow: hidden; display: flex; flex-direction: column; text-align: left; transition: .2s; }
.card:hover { border-color: var(--brand); box-shadow: var(--shadow); transform: translateY(-3px); }
.card .thumb { width: 100%; aspect-ratio: 16 / 9; position: relative; background: var(--stage); flex: none; }
.card .thumb img, .card .thumb .ph { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.cards .card-app .thumb img { object-fit: contain; }
.card .play { position: absolute; right: 12px; bottom: 12px; width: 40px; height: 40px; border-radius: 50%; background: var(--brand); color: #fff; display: grid; place-items: center; font-size: 13px; box-shadow: 0 6px 16px rgba(245, 129, 31, .4); }
.card .body { padding: 18px 20px 22px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.card .when { font: 700 11px/1 var(--mono); color: var(--brand); letter-spacing: .08em; }
.card .when span { color: var(--text-3); margin-left: 8px; font: 500 13px/1 var(--font); letter-spacing: 0; }
.card h3 { font-size: 19px; font-weight: 800; color: var(--navy); line-height: 1.35; }
.card .pain { font-size: 14px; color: var(--text-3); }
.card .res { font-size: 14px; color: var(--text); margin-top: auto; padding-top: 10px; border-top: 1px dashed var(--line); }
.card .res::before { content: "→ "; color: var(--brand); font-weight: 700; }

/* 桥接：深色舞台 */

/* 五层 */
.stack { padding: 96px 0; }
.stack-head { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; margin-bottom: 40px; align-items: end; }
.stack-head .h-lg { margin-top: 14px; }

/* 为什么敢用 */
.trust { padding: 96px 0; background: var(--bg-2); }
.trust-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 40px; }
.trust-grid > div { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 24px 22px; }
.trust-grid i { font: 800 13px/1 var(--mono); color: var(--brand); font-style: normal; display: block; margin-bottom: 14px; }
.trust-grid b { display: block; font-size: 18px; margin-bottom: 8px; color: var(--navy); }
.trust-grid p { font-size: 14px; color: var(--text-2); }

/* 部署与数字 */
.split { padding: 96px 0; }
.split-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 40px; }
.panel { border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; background: #fff; }
.panel h3 { font-size: 21px; margin-bottom: 8px; color: var(--navy); }
.panel p { color: var(--text-2); font-size: 15px; }
.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 36px; }
.stats b { font-size: clamp(28px, 4.2vw, 48px); font-weight: 900; display: block; line-height: 1.1; color: var(--navy); }
.stats span { color: var(--text-2); font-size: 14px; }

/* 收尾 */
.final { padding: 110px 0; text-align: center; background: linear-gradient(180deg, #FFF8F1, #FFEEDD); }
.final .lead { margin: 18px auto 32px; }
.final .hero-cta { justify-content: center; }

/* 页脚 */

/* 播放弹层 */
.modal { position: fixed; inset: 0; z-index: 100; background: rgba(13, 27, 42, .92); display: none; align-items: center; justify-content: center; padding: 24px; }
.modal.open { display: flex; }
.modal-box { width: min(1200px, 100%); }
.modal-box .frame { aspect-ratio: 16 / 9; background: #000; border-radius: 12px; overflow: hidden; position: relative; }
.modal-box video, .modal-box .ph { position: absolute; inset: 0; width: 100%; height: 100%; }
.modal.modal-app .modal-box { width: min(400px, 100%); }
.modal.modal-app .frame { aspect-ratio: 9 / 19.5; border-radius: 28px; }
.modal-cap { display: flex; justify-content: space-between; gap: 20px; margin-top: 14px; align-items: flex-start; color: #fff; }
.modal-cap h3 { font-size: 19px; }
.modal-cap p { color: #B9C5D6; font-size: 14px; }
.modal-close { position: fixed; top: 14px; right: 18px; font-size: 32px; color: #fff; width: 44px; height: 44px; z-index: 2; }

/* 子页 */
.sub-hero { padding: 132px 0 64px; background: linear-gradient(180deg, #fff, #FFF8F1); border-bottom: 1px solid var(--line); }
.sub-hero .h-xl, .sub-hero .lead { margin-top: 18px; }
.sub-hero .hl { margin: 32px 0 0; }
.caps { padding: 96px 0; background: var(--bg-2); }
.cap-table { width: 100%; border-collapse: collapse; margin-top: 32px; font-size: 15px; background: #fff; border-radius: var(--radius); overflow: hidden; }
.cap-table th, .cap-table td { text-align: left; padding: 15px 16px; border-bottom: 1px solid var(--line); vertical-align: top; }
.cap-table th { color: var(--text-3); font-weight: 600; font-size: 13px; background: var(--bg-3); }
.cap-table td:first-child { font-weight: 700; white-space: nowrap; color: var(--navy); }
.cap-table td:last-child { color: var(--text-2); }

/* 平板 */
@media (max-width: 1080px) {
  .dual { grid-template-columns: 1fr; }
  .dual-phone { width: 240px; margin: 0 auto; }
  .ask-list { flex-wrap: nowrap; overflow-x: auto; -webkit-overflow-scrolling: touch; scrollbar-width: none; }
  .ask-list::-webkit-scrollbar { display: none; }
  .stack-head, .split-grid { grid-template-columns: 1fr; }
  .cards { grid-template-columns: repeat(3, 1fr); gap: 14px; }
  .trust-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-top { grid-template-columns: 1fr; gap: 24px; }
}
/* 手机 */
@media (max-width: 760px) {
  .wrap { padding: 0 16px; }
  .hero { padding: 88px 0 0; text-align: center; }
  .hero-top { grid-template-columns: 1fr; gap: 24px; margin-bottom: 28px; }
  .hero-top .lead { margin-left: auto; margin-right: auto; }
  .hero-cta { flex-direction: column; align-items: stretch; max-width: 320px; margin: 0 auto; width: 100%; }
  .stage { margin: 0 -16px; border-radius: 20px 20px 0 0; padding: 24px 16px; }
  .dual-label { text-align: center; }
  .ask-cap { flex-direction: column; align-items: flex-start; gap: 6px; padding: 12px 14px; text-align: left; }
  .ask-cap-q { font-size: 14px; }
  .ask-cap-r { text-align: left; max-width: none; }
  .ask-list { padding: 12px 14px 14px; }
  .ask-note { text-align: left; }
  .dual-phone { width: 210px; }
  .day, .caps, .stack, .trust, .split { padding: 64px 0; }
  .final { padding: 72px 0; }
  .cards { grid-template-columns: 1fr; }
  .trust-grid { gap: 10px; margin-top: 28px; }
  .trust-grid > div { padding: 16px 14px; }
  .trust-grid b { font-size: 15px; }
  .trust-grid p { font-size: 13px; }
  .stats { gap: 10px; text-align: center; }
  .stats span { font-size: 12px; }
  .modal { padding: 0; }
  .modal-box { width: 100%; padding: 0 12px; }
  .modal.modal-app .modal-box { width: min(340px, 100%); }
  .cap-table td:first-child { white-space: normal; }
}
.stats b sup { color: var(--brand); font-size: .55em; vertical-align: .6em; margin-left: 2px; }

/* 业务本体架构图 */
.onto { margin: 8px 0 0; background: #fff; border: 1px solid var(--line); border-radius: 20px; padding: 28px 24px 20px; }
.onto img { width: 100%; height: auto; }
.onto-m { display: none; }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 24px; }
.steps-4 { grid-template-columns: repeat(4, 1fr); }
.steps-5 { grid-template-columns: repeat(5, 1fr); }
.steps > div { border-top: 3px solid var(--brand); background: #fff; border-radius: 0 0 var(--radius) var(--radius); padding: 18px 20px; box-shadow: 0 1px 0 var(--line); }
.steps i { font: 800 13px/1 var(--mono); color: var(--brand); font-style: normal; }
.steps b { display: block; font-size: 18px; color: var(--navy); margin: 8px 0 6px; }
.steps p { font-size: 14px; color: var(--text-2); }
.more { margin-top: 24px; }
.more a { color: var(--brand); font-weight: 600; }
.more a:hover { text-decoration: underline; }
@media (max-width: 1080px) { .steps-4 { grid-template-columns: repeat(2, 1fr); } .steps-5 { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 760px) {
  .onto { padding: 14px 10px 10px; border-radius: 14px; }
  .onto-m { display: flex; flex-direction: column; gap: 6px; }
  .om-layer { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 14px; }
  .om-core { background: var(--brand-soft); border-color: #F8C9A0; }
  .om-tag { font-size: 12px; font-weight: 700; color: var(--text-3); margin-bottom: 10px; letter-spacing: .04em; }
  .om-core .om-tag { color: var(--brand-dark); }
  .om-chips { display: flex; flex-wrap: wrap; gap: 6px; }
  .om-chips span { font-size: 13px; color: var(--navy); background: var(--bg-2); border: 1px solid var(--line); border-radius: 8px; padding: 5px 9px; }
  .om-acts { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
  .om-acts b { font-size: 12px; color: #fff; background: var(--brand); border-radius: 999px; padding: 4px 10px; }
  .om-rel { list-style: none; display: flex; flex-direction: column; gap: 8px; }
  .om-rel li { display: flex; align-items: center; gap: 6px; font-size: 13px; }
  .om-rel span { background: #fff; border: 1px solid #F3C49B; border-radius: 8px; padding: 4px 8px; color: var(--navy); font-weight: 600; white-space: nowrap; }
  .om-rel i { font-style: normal; color: var(--brand-dark); font-size: 12px; flex: 1; text-align: center; border-bottom: 1px dashed #F3B07A; line-height: 1.2; padding-bottom: 2px; }
  .om-arrow { text-align: center; color: var(--text-3); font-size: 14px; }
  .steps, .steps-4, .steps-5 { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  .om-zone { background: #fff; border: 1px solid #F3C49B; border-radius: 10px; padding: 10px; margin-top: 8px; }
  .om-zone b { display: block; font-size: 13px; color: var(--navy); margin-bottom: 8px; }
  .om-base { border-style: solid; border-color: var(--brand); }
  .om-chain { font-size: 12px; color: var(--brand-dark); margin-top: 8px; }
}

/* 业务模块 */
.mods { display: grid; grid-template-columns: 1fr 0.9fr 1fr; gap: 20px; align-items: start; }
.mod-col { background: var(--bg-2); border: 1px solid var(--line); border-radius: 18px; padding: 18px; display: flex; flex-direction: column; gap: 10px; }
.mod-col h3 { font-size: 16px; color: var(--navy); margin: 2px 4px 6px; }
.mod-base { background: var(--brand-soft); border-color: #F3C49B; }
.mod { display: block; background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px; position: relative; transition: .2s; }
.mod b { display: block; font-size: 16px; color: var(--navy); }
.mod span { display: block; font-size: 13px; color: var(--text-2); margin-top: 4px; padding-right: 48px; }
.mod i { position: absolute; right: 14px; top: 16px; font-style: normal; font-size: 12px; color: var(--brand); font-weight: 600; }
a.mod:hover { border-color: var(--brand); box-shadow: var(--shadow); }
@media (max-width: 1080px) { .mods { grid-template-columns: 1fr; } }
.card .sound { position: absolute; right: 12px; top: 12px; font-size: 12px; font-weight: 700; color: #fff; background: rgba(13, 27, 42, .78); padding: 4px 9px; border-radius: 999px; }
video::cue { background: rgba(13, 27, 42, .82); color: #fff; font-size: 15px; }
.end-row + .end-row { margin-top: 36px; }
.end-title { font-size: 17px; color: var(--navy); margin-bottom: 14px; display: flex; align-items: center; gap: 10px; }
.end-title::before { content: ""; width: 4px; height: 18px; border-radius: 2px; background: var(--brand); }

/* v3.1：化繁为简 */
.dual.no-phone { grid-template-columns: 1fr !important; }
.dual.no-phone .dual-phone { display: none; }
.ask-q b { display: inline-grid; place-items: center; width: 18px; height: 18px; margin-right: 6px; border-radius: 5px; font-size: 11px; background: rgba(255, 255, 255, .14); color: #fff; }
.ask-q.on b { background: #fff; color: var(--brand); }
.verb-legend { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin: -12px 0 28px; }
.verb-legend div { display: flex; gap: 10px; align-items: flex-start; font-size: 14px; color: var(--text-2); }
.verb-legend b { flex: none; width: 30px; height: 30px; border-radius: 8px; background: var(--brand); color: #fff; display: grid; place-items: center; font-size: 16px; }
.card .tags { display: flex; gap: 6px; flex-wrap: wrap; }
.card .tag { font-size: 11px; font-weight: 600; color: var(--text-2); background: var(--bg-3); border-radius: 6px; padding: 2px 7px; }
.card .tag-verb { background: var(--brand); color: #fff; }
.card .tag-dev { background: transparent; border: 1px solid var(--line); color: var(--text-3); }
.card .who { font-size: 13px; color: var(--text-3); margin-top: -4px; }
.cmp { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: #fff; }
.cmp-row { display: grid; grid-template-columns: 160px 1fr 1.4fr; border-top: 1px solid var(--line); }
.cmp-row:first-child { border-top: 0; }
.cmp-row > div { padding: 15px 18px; font-size: 15px; color: var(--text-2); }
.cmp-row > div:first-child { font-weight: 700; color: var(--navy); background: var(--bg-2); }
.cmp-row > div:last-child { color: var(--navy); font-weight: 600; background: var(--brand-soft); }
.cmp-head > div { font-size: 13px; font-weight: 700; color: var(--text-3) !important; background: var(--bg-3) !important; }
.cmp-head > div:last-child { color: var(--brand-dark) !important; background: #FFE7D1 !important; }
@media (max-width: 1080px) { .verb-legend { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 760px) {
  /* 首屏：去掉深色舞台；问题标签横向滑动切换 */
  .stage { background: transparent; padding: 0; margin: 0; border-radius: 0; }
  .dual-label { display: none; }
  .ask-list { gap: 6px; padding: 10px 12px 12px; scroll-padding: 0 12px; }
  .ask-q { padding: 6px 11px; font-size: 12px; }
  .ask { border-radius: 14px; box-shadow: var(--shadow); border: 0; }
  .ask-note { color: var(--text-3); }
  .hero { padding-bottom: 40px; }
  .verb-legend { grid-template-columns: 1fr 1fr; gap: 10px; margin: -8px 0 20px; }
  .verb-legend div { font-size: 12px; }
  .verb-legend b { width: 24px; height: 24px; font-size: 13px; }
  /* 卡片：紧凑横排，点开全屏播放 */
  .cards-verbs { gap: 10px; }
  .cards-verbs .card { flex-direction: row; align-items: stretch; }
  .cards-verbs .card .thumb { width: 42%; aspect-ratio: auto; min-height: 96px; }
  .cards-verbs .card .play { width: 30px; height: 30px; font-size: 11px; right: 8px; bottom: 8px; }
  .cards-verbs .card .body { padding: 10px 12px; gap: 4px; }
  .cards-verbs .card h3 { font-size: 15px; }
  .cards-verbs .card .pain, .cards-verbs .card .who { display: none; }
  .cards-verbs .card .res { font-size: 12px; padding-top: 6px; }
  .cmp-row { grid-template-columns: 1fr; }
  .cmp-head { display: none; }
  .cmp-row > div { padding: 10px 14px; font-size: 14px; }
  .cmp-row > div:nth-child(2)::before { content: "常见 ChatBI："; color: var(--text-3); }
  .cmp-row > div:nth-child(3)::before { content: "意枢："; color: var(--brand-dark); }
  .cmp-link .cmp-row > div:nth-child(2)::before { content: "人用："; }
  .cmp-link .cmp-row > div:nth-child(3)::before { content: "系统用："; }
}

/* 亮点：不看视频也一眼看懂 */
.hl { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin: -8px 0 32px; }
.hl > div { background: #fff; border: 1px solid #F6D3B4; border-radius: 14px; padding: 16px 18px; box-shadow: 0 6px 20px rgba(245, 129, 31, .08); }
.hl b { display: block; font-size: clamp(30px, 3.4vw, 42px); font-weight: 900; color: var(--brand); line-height: 1.1; letter-spacing: -.01em; }
.hl b small { font-size: .45em; font-weight: 800; margin-left: 3px; color: var(--navy); }
.hl span { display: block; font-size: 14px; color: var(--text-2); margin-top: 6px; line-height: 1.5; }
.hl em { font-style: normal; font-size: 11px; color: var(--text-3); border: 1px solid var(--line); border-radius: 4px; padding: 0 4px; margin-left: 6px; }
.card .hlbadge { position: absolute; left: 10px; top: 10px; font-size: 22px; font-weight: 900; color: #fff; background: rgba(245, 129, 31, .95); padding: 2px 10px; border-radius: 8px; box-shadow: 0 4px 12px rgba(0, 0, 0, .2); }
@media (max-width: 1080px) { .hl { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 760px) {
  .hl { gap: 8px; margin: 0 0 22px; text-align: left; }
  .hl > div { padding: 12px; }
  .hl span { font-size: 12px; }
  .cards-verbs .card .hlbadge { font-size: 15px; padding: 1px 7px; left: 6px; top: 6px; }
  .cards-verbs .card .sound { font-size: 10px; padding: 2px 6px; right: 6px; top: auto; bottom: 8px; left: 6px; right: auto; }
}
.hl em { white-space: nowrap; display: inline-block; }

/* 平台页：循环、分节、本体生长 */
.pf-cycle { list-style: none; display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-top: 24px; counter-reset: c; }
.pf-cycle li { position: relative; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 18px; }
.pf-cycle li:not(:last-child)::after { content: "→"; position: absolute; right: -13px; top: 50%; transform: translateY(-50%); color: var(--brand); font-weight: 800; z-index: 1; }
.pf-cycle li:last-child::after { content: "↺"; position: absolute; right: 14px; top: 12px; color: var(--brand); font-weight: 800; }
.pf-cycle i { font: 700 12px/1 var(--mono); color: var(--brand); font-style: normal; }
.pf-cycle b { display: block; font-size: 17px; color: var(--navy); margin: 8px 0 4px; }
.pf-cycle span { font-size: 13px; color: var(--text-2); }
.pf-sub { font-size: 20px; color: var(--navy); margin: 48px 0 18px; }
.pf-hubs { margin-top: 0; }
.pf-dep { margin-top: 0; }
.pf-dep i { font-size: 12px; letter-spacing: .04em; }
.pf-grow { display: grid; grid-template-columns: 1.2fr 1fr; gap: 28px; align-items: start; }
.pf-loop { list-style: none; counter-reset: g; display: flex; flex-direction: column; gap: 10px; }
.pf-loop li { counter-increment: g; position: relative; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 18px 14px 56px; }
.pf-loop li::before { content: counter(g); position: absolute; left: 16px; top: 14px; width: 26px; height: 26px; border-radius: 50%; background: var(--brand); color: #fff; font: 800 13px/26px var(--mono); text-align: center; }
.pf-loop b { display: block; font-size: 16px; color: var(--navy); }
.pf-loop span { display: block; font-size: 14px; color: var(--text-2); margin-top: 4px; }
.pf-ev { grid-template-columns: 1fr; }
.pf-more { margin-top: 24px; font-weight: 700; }
.pf-more a { color: var(--brand); }
.pf-deploy { padding: 40px 0; background: var(--bg-2); border-top: 1px solid var(--line); }
.pf-deploy .wrap { display: flex; align-items: center; gap: 18px; }
.pf-deploy b { font-size: 18px; color: var(--navy); flex: none; }
.pf-deploy span { color: var(--text-2); flex: 1; }
@media (max-width: 1080px) {
  .pf-cycle { grid-template-columns: repeat(2, 1fr); }
  .pf-cycle li:nth-child(2)::after { content: none; }
  .pf-grow { grid-template-columns: 1fr; }
  .pf-ev { max-width: 420px; }
  .mod-col { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
  .mod-col h3 { grid-column: 1 / -1; }
}
@media (max-width: 760px) {
  .pf-cycle { grid-template-columns: 1fr; gap: 10px; }
  .pf-cycle li:not(:last-child)::after { content: "↓"; right: auto; left: 50%; top: auto; bottom: -15px; transform: translateX(-50%); }
  .pf-sub { font-size: 18px; margin: 36px 0 14px; }
  .pf-loop li { padding: 12px 14px 12px 50px; }
  .pf-loop li::before { left: 12px; top: 12px; }
  .pf-deploy .wrap { flex-direction: column; align-items: flex-start; gap: 10px; }
  .pf-cycle li { padding: 12px 14px; }
  .pf-cycle b { font-size: 16px; margin: 6px 0 2px; }
  .steps { gap: 10px; }
  .steps > div { padding: 14px 16px; }
  .steps b { font-size: 16px; margin: 6px 0 4px; }
  .steps p { font-size: 13px; }
  .mod-col { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; padding: 14px; }
  .mod-col h3 { grid-column: 1 / -1; margin: 0 2px 2px; }
  .mod { padding: 10px 12px; }
  .mod b { font-size: 14px; }
  .mod span, .mod i { display: none; }
  a.mod b::after { content: " ›"; color: var(--brand); }
  .pf-hubs .mod span { display: block; padding-right: 0; }
}
/* 首页最新动态 */
.news-links { display: flex; gap: 18px; flex-wrap: wrap; justify-content: flex-end; font-weight: 600; }
.news-links a { color: var(--brand); }
.news-links a::after { content: " →"; }
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.news-card { display: flex; flex-direction: column; gap: 10px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 22px 22px 24px; transition: .2s; }
.news-card:hover { border-color: var(--brand); box-shadow: var(--shadow); transform: translateY(-2px); }
.news-meta { display: flex; justify-content: space-between; align-items: center; font-size: 13px; color: var(--text-3); }
.news-meta span { color: var(--brand); font-weight: 700; background: var(--brand-soft); padding: 3px 10px; border-radius: 999px; }
.news-card b { font-size: 17px; line-height: 1.45; color: var(--navy); }
.news-card p { font-size: 14px; color: var(--text-2); }
@media (max-width: 760px) {
  .news-links { justify-content: flex-start; }
  .news-grid { grid-template-columns: 1fr; gap: 12px; }
  .news-card { padding: 16px; }
}

/* 常见问题 */
.faq { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; align-items: start; }
.faq details { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 0 20px; }
.faq summary { cursor: pointer; list-style: none; padding: 18px 28px 18px 0; font-weight: 700; color: var(--navy); position: relative; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 0; top: 50%; transform: translateY(-50%); font-size: 20px; line-height: 1; color: var(--brand); font-weight: 400; }
.faq details[open] summary::after { content: "−"; }
.faq details > div { padding: 0 0 18px; color: var(--text-2); font-size: 15px; }
@media (max-width: 1080px) { .faq { grid-template-columns: 1fr; } }
@media (max-width: 760px) { .faq details { padding: 0 16px; } .faq summary { padding: 15px 26px 15px 0; font-size: 15px; } }

/* 一头连人，一头连系统 */
.link2 { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr); gap: 16px; margin-top: 36px; }
.link2-one { grid-template-columns: minmax(0, 1fr); }
.link2-col { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; display: flex; flex-direction: column; gap: 14px; }
.link2-k { font: 600 12px/1 var(--mono); letter-spacing: .14em; color: var(--text-3); }
.link2-list { list-style: none; display: grid; gap: 16px; }
.link2-list li { display: grid; gap: 4px; }
.link2-list b { font-size: 17px; color: var(--navy); }
.link2-list p { font-size: 14px; color: var(--text-2); }
.st { justify-self: start; font-size: 12px; font-weight: 600; padding: 2px 10px; border-radius: 999px; }
.st-ok { background: #E6F4EC; color: #1F7A47; }
.st-wip { background: var(--bg-3); color: var(--text-2); }
.link2-more { margin-top: auto; color: var(--brand); font-weight: 600; font-size: 15px; }
.link2-more:hover { text-decoration: underline; }
.link2-rule { margin-top: 24px; font-size: clamp(17px, 2vw, 20px); font-weight: 700; color: var(--navy); border-left: 3px solid var(--brand); padding-left: 14px; }
.cmp-link { margin-bottom: 0; }
@media (max-width: 860px) { .link2 { grid-template-columns: minmax(0, 1fr); } }
@media (max-width: 760px) { .link2-col { padding: 18px 16px; } .link2-list b { font-size: 16px; } }

/* 首屏两端：业主、施工，各两点 */
.ends { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; margin-top: 40px; }
.end { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; display: flex; flex-direction: column; gap: 14px; text-align: left; }
.end-k { font: 600 12px/1 var(--mono); letter-spacing: .14em; color: var(--brand); }
.end-h { font-size: clamp(22px, 2.4vw, 28px); line-height: 1.3; color: var(--navy); font-weight: 800; text-wrap: balance; margin-bottom: 6px; }
.vp { display: grid; grid-template-columns: 168px minmax(0, 1fr); gap: 16px; align-items: center; text-align: left; padding: 10px; margin: 0 -10px; border-radius: 12px; transition: .2s; }
.vp:hover { background: var(--bg-2); }
.vp:focus-visible { outline: 2px solid var(--brand); outline-offset: 2px; }
.vp-thumb { position: relative; aspect-ratio: 16 / 9; border-radius: 10px; overflow: hidden; background: var(--stage); }
.vp-thumb img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.vp-thumb .play { position: absolute; right: 8px; bottom: 8px; width: 30px; height: 30px; border-radius: 50%; background: var(--brand); color: #fff; display: grid; place-items: center; font-size: 11px; }
.vp-body { display: grid; gap: 4px; }
.vp-body b { font-size: 17px; color: var(--navy); }
.vp-body span { font-size: 14px; color: var(--text-2); }
.vp-body em { font-style: normal; font: 600 12px/1.4 var(--mono); color: var(--text-3); }
.ends-more { margin-top: 18px; color: var(--text-2); font-size: 15px; }
.ends-more a { color: var(--brand); font-weight: 600; }

/* 谁在用 */
.who { display: grid; grid-template-columns: 1fr 1fr 1.6fr; gap: 16px; margin-top: 32px; }
.who-num { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 22px 24px; display: grid; gap: 6px; align-content: start; }
.who-num b { font-size: clamp(30px, 3.4vw, 40px); line-height: 1; color: var(--navy); font-weight: 800; font-variant-numeric: tabular-nums; }
.who-num b small { font-size: .5em; color: var(--brand); }
.who-num span { color: var(--text-2); font-size: 14px; }
.who-names { margin-top: 20px; color: var(--text-2); font-size: 15px; line-height: 1.9; }
.who-names a { color: var(--brand); font-weight: 600; margin-left: 6px; white-space: nowrap; }

/* 往哪去 */
.road { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; margin-top: 32px; }
.road-col { border-top: 3px solid var(--line-2); padding-top: 16px; display: grid; gap: 12px; align-content: start; }
.road-col:first-child { border-top-color: #1F7A47; }
.road-col ul { list-style: none; display: grid; gap: 10px; }
.road-col li { color: var(--text); font-size: 15px; padding-left: 14px; position: relative; }
.road-col li::before { content: ""; position: absolute; left: 0; top: .7em; width: 5px; height: 5px; border-radius: 50%; background: var(--text-3); }
.st-plan { background: transparent; color: var(--text-3); border: 1px solid var(--line-2); }

@media (max-width: 1080px) { .ends { grid-template-columns: minmax(0, 1fr); } .who { grid-template-columns: 1fr 1fr; } .who-num:last-child { grid-column: 1 / -1; } }
@media (max-width: 760px) {
  .end { padding: 20px 16px; }
  .vp { grid-template-columns: 120px minmax(0, 1fr); gap: 12px; }
  .vp-body b { font-size: 16px; }
  .road { grid-template-columns: minmax(0, 1fr); }
}

/* 过去 · 现在 · 未来 */
.eras { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; margin-top: 32px; }
.eras > div, .eras > a { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 22px 24px; display: grid; gap: 8px; align-content: start; }
.eras > a { transition: .2s; }
.eras > a:hover { border-color: var(--brand); }
.era-k { font: 600 12px/1 var(--mono); letter-spacing: .12em; color: var(--brand); }
.eras b { font-size: 19px; color: var(--navy); }
.eras p { font-size: 14.5px; color: var(--text-2); }
.timeline { list-style: none; margin-top: 28px; display: grid; gap: 0; border-left: 2px solid var(--line-2); }
.timeline li { display: grid; grid-template-columns: 72px minmax(0, 1fr); gap: 16px; padding: 10px 0 10px 20px; position: relative; }
.timeline li::before { content: ""; position: absolute; left: -6px; top: 18px; width: 10px; height: 10px; border-radius: 50%; background: var(--brand); }
.timeline b { font: 700 16px var(--mono); color: var(--navy); }
.timeline span { color: var(--text-2); }
@media (max-width: 860px) { .eras { grid-template-columns: minmax(0, 1fr); } }
@media (max-width: 760px) {
  .cmp-conn .cmp-row > div:nth-child(2)::before { content: "今天："; }
  .cmp-conn .cmp-row > div:nth-child(3)::before { content: "连接之后："; }
}

#eras.day { padding-top: 40px; padding-bottom: 56px; }
#eras .eras { margin-top: 0; }

/* 第一幕：为什么换成河狸云 */
.why { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; margin-top: 36px; }
.why-col { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; display: flex; flex-direction: column; gap: 14px; text-align: left; }
.why-k { font: 600 13px/1.5 var(--font); color: var(--brand); }
.why-h { font-size: clamp(24px, 2.6vw, 32px); line-height: 1.25; color: var(--navy); font-weight: 900; text-wrap: balance; }
.why-list { list-style: none; display: grid; gap: 14px; margin-top: 4px; }
.why-list li { display: grid; gap: 3px; padding-left: 16px; border-left: 3px solid var(--brand-soft); }
.why-list b { font-size: 17px; color: var(--navy); }
.why-list p { font-size: 14.5px; color: var(--text-2); }
.why-proof { margin-top: auto; padding-top: 14px; border-top: 1px dashed var(--line-2); font-size: 14px; color: var(--text-2); }
.ends-now { margin-top: 32px; }
/* 第三幕：产业连接 */
.next { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); gap: 16px 40px; align-items: center; }
.next .h-lg { margin-top: 14px; }
.next-list { list-style: none; display: grid; gap: 12px; }
.next-list li { display: flex; gap: 10px; align-items: baseline; font-size: 15.5px; color: var(--text); }
.next-list .st { flex: none; }
.next-more { grid-column: 1 / -1; color: var(--brand); font-weight: 600; }
@media (max-width: 1080px) { .why, .next { grid-template-columns: minmax(0, 1fr); } }
@media (max-width: 760px) { .why-col { padding: 20px 16px; } .next-list li { flex-direction: column; gap: 4px; } }
.hero { padding-bottom: 72px; }
@media (max-width: 760px) { .hero { padding-bottom: 48px; } }
.h-lg, .h-xl { text-wrap: balance; }
.why-now { margin-top: 18px; font-size: clamp(16px, 1.6vw, 19px); font-weight: 700; color: var(--brand-dark); }
.hero-top .why-now + .lead { margin-top: 10px; }