/* ============================================================
 * 韵居智能 · 公司介绍 样式
 * 设计语言对齐原 PPT:暖灰底 + 青绿强调 + 封面墨绿渐变/鎏金标题
 * 两种模式(自动):
 *  - 手机:全屏上下滑动落地页
 *  - PC(html.pc,≥900px):960×540 的 16:9 幻灯片画布,等比缩放
 * 打印:@media print 每页一张 16:9 幻灯片,可直接打印成 PDF
 * ============================================================ */
:root {
  --bg: #edeae6;
  --card: #ffffff;
  --line: #e4e0da;
  --ink: #2f3d46;
  --muted: #71807f;
  --teal: #17b0a0;
  --teal-deep: #0e8c80;
  --teal-soft: #e3f4f1;
  --teal-line: #bfe5df;
  --gold-1: #ffd44d;
  --gold-2: #ff9a3d;
  --gold-3: #f0561f;
  --dark-1: #6e8a87;
  --dark-2: #3f5e5b;
  --radius: 14px;
  --wrap: 640px;
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
  overscroll-behavior-y: none;
}

/* ---------- 手机:翻页容器 ---------- */
#deck {
  height: 100dvh;
  overflow-y: auto;
  scroll-snap-type: y mandatory;
  scrollbar-width: none;
}
#deck::-webkit-scrollbar { display: none; }

.slide {
  position: relative;
  min-height: 100dvh;
  scroll-snap-align: start;
  scroll-snap-stop: always;
  display: flex;
  flex-direction: column;
  justify-content: center;
  overflow: hidden;
  padding: 52px 20px 64px;
}
.slide .wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; }
.slide.light { background: var(--bg); }
.slide.dark { background: linear-gradient(160deg, var(--dark-1) 0%, var(--dark-2) 78%); color: #f2f7f6; }

/* split 版式在手机端不分组,保持数据里的块顺序 */
.pc-cols, .pc-main, .pc-media { display: contents; }

/* ---------- 入场动画 ---------- */
.blk { opacity: 0; transform: translateY(26px); }
.slide.active .s-title.blk, .slide.active .pc-cols .blk, .slide.active .cover-inner .blk, .slide.active .cover-foot.blk, .slide.active .wrap > .blk, .slide.active .pc-cols .pc-main .blk, .slide.active .pc-cols .pc-media .blk {
  opacity: 1; transform: none;
  transition: opacity .55s ease, transform .55s cubic-bezier(.22,.9,.35,1.2);
}
.slide.active .s-title.blk { transition-delay: .05s; }
.slide.active .wrap > .blk:nth-of-type(1), .slide.active .pc-cols .blk { transition-delay: .12s; }
.slide.active .wrap > .blk:nth-of-type(2) { transition-delay: .2s; }
.slide.active .wrap > .blk:nth-of-type(3) { transition-delay: .28s; }
.slide.active .wrap > .blk:nth-of-type(4) { transition-delay: .36s; }
.slide.active .wrap > .blk:nth-of-type(n+5) { transition-delay: .44s; }

/* ---------- 标题 ---------- */
.s-title { display: flex; gap: 10px; align-items: flex-start; margin: 0 0 20px; }
.s-title .bar {
  flex: none; width: 5px; border-radius: 3px; align-self: stretch;
  background: linear-gradient(180deg, var(--teal), #7fd6c9); margin-top: 4px;
}
.s-title h2 { margin: 0; font-size: 22px; line-height: 1.42; font-weight: 800; color: var(--ink); letter-spacing: .3px; }
.slide.dark .s-title h2 { color: #fff; }

/* ---------- 通用文字块 ---------- */
.blk-p { margin: 0 0 14px; font-size: 15px; color: #4c5b60; text-align: justify; }

/* ---------- 卡片 cards ---------- */
.cards { display: grid; gap: 12px; margin-bottom: 14px; }
.cards.c3 { grid-template-columns: 1fr; }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 16px 16px 14px; box-shadow: 0 1px 3px rgba(70, 80, 75, .05);
}
.card .c-top { display: flex; align-items: center; gap: 10px; margin-bottom: 8px; }
.card .c-ic {
  flex: none; width: 40px; height: 40px; border-radius: 11px;
  background: var(--teal-soft); color: var(--teal-deep);
  display: flex; align-items: center; justify-content: center;
}
.card .c-ic svg { width: 22px; height: 22px; }
.card .c-no { font-size: 13px; font-weight: 800; color: var(--teal); letter-spacing: 1px; }
.card h4 { margin: 0; font-size: 16.5px; font-weight: 800; color: var(--ink); }
.card .c-sub { font-size: 12.5px; font-weight: 700; color: var(--teal-deep); margin: 2px 0 0; }
.card p { margin: 6px 0 0; font-size: 13.5px; color: #5d6c6c; text-align: justify; }
.cards.soft .card { background: var(--teal-soft); border-color: var(--teal-line); box-shadow: none; }
.cards.soft .card h4 { font-size: 15px; }
.cards.soft .card p { color: #57726e; }
.cards.soft .card .c-ic { background: #fff; }

/* ---------- section 编号小节 ---------- */
.sec { margin: 4px 0 14px; }
.sec .sec-h { display: flex; align-items: baseline; gap: 8px; margin: 0 0 6px; }
.sec .sec-no { font-size: 16px; font-weight: 900; color: var(--teal); }
.sec h4 { margin: 0; font-size: 16.5px; font-weight: 800; color: #37505c; }
.sec p { margin: 0; font-size: 14px; color: #55666b; text-align: justify; }

/* ---------- 列表 bullets ---------- */
.bullets { margin: 0 0 14px; padding: 0; list-style: none; }
.bullets li {
  position: relative; padding-left: 18px; margin-bottom: 8px;
  font-size: 14px; color: #4c5b60; text-align: justify;
}
.bullets li::before {
  content: ""; position: absolute; left: 2px; top: 9px;
  width: 7px; height: 7px; border-radius: 2px; background: var(--teal);
}
.bullets b { color: var(--ink); }

/* ---------- 多列 cols ---------- */
.cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-bottom: 14px; }
@media (max-width: 480px) { .cols { grid-template-columns: 1fr; } }
.col { background: var(--teal-soft); border: 1px solid var(--teal-line); border-radius: 12px; padding: 12px; }
.col h5 { margin: 0 0 4px; font-size: 14px; font-weight: 800; color: var(--teal-deep); }
.col p { margin: 0; font-size: 12.5px; color: #57726e; text-align: justify; }

/* ---------- 指标 metrics ---------- */
.metrics { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; margin-bottom: 14px; }
.metric { background: var(--teal-soft); border: 1px solid var(--teal-line); border-radius: 12px; padding: 12px 14px; }
.metric .m-v { font-size: 21px; font-weight: 900; color: var(--teal-deep); line-height: 1.2; }
.metric .m-l { font-size: 13px; font-weight: 700; color: #3c5560; margin-top: 2px; }
.metric .m-n { font-size: 11.5px; color: #7d938f; margin-top: 2px; }

/* ---------- 横幅 banner ---------- */
.banner {
  background: var(--teal-soft); border: 1px solid var(--teal-line);
  border-radius: 12px; padding: 12px 14px; font-size: 13.5px;
  color: #3f5a55; text-align: justify; margin-bottom: 12px;
}
.banner b { color: var(--teal-deep); }
.banner.light { background: #f4f1ec; border-color: var(--line); color: #6b7a80; text-align: center; }

/* ---------- 步骤 steps ---------- */
.steps { margin: 0 0 14px; padding: 0; list-style: none; }
.steps li { position: relative; padding: 0 0 18px 46px; }
.steps li::before {
  content: ""; position: absolute; left: 15px; top: 22px; bottom: -2px;
  width: 2px; background: var(--teal-line);
}
.steps li:last-child::before { display: none; }
.steps .st-no {
  position: absolute; left: 0; top: 0; width: 32px; height: 32px; border-radius: 50%;
  background: var(--teal); color: #fff; font-size: 13px; font-weight: 800;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 0 0 4px var(--teal-soft);
}
.steps h4 { margin: 4px 0 3px; font-size: 15.5px; font-weight: 800; color: var(--ink); }
.steps p { margin: 0; font-size: 13px; color: #5d6c6c; text-align: justify; }

/* ---------- 技术架构 arch ---------- */
.arch { background: var(--card); border: 1.5px solid var(--teal-line); border-radius: var(--radius); padding: 14px 14px 6px; margin-bottom: 14px; }
.arch .a-title { font-size: 16px; font-weight: 900; color: var(--teal-deep); margin: 0 0 10px; }
.arch .a-row { border-top: 1px dashed var(--teal-line); padding: 10px 0; font-size: 13.5px; color: #4c5b60; }
.arch .a-row:first-of-type { border-top: 0; }
.arch .a-no { color: var(--teal); font-weight: 900; margin-right: 6px; }
.arch b { color: var(--ink); }

/* ---------- 功能网格 features ---------- */
.features { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 14px; }
.feat { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 12px; }
.feat .f-top { display: flex; align-items: center; gap: 7px; margin-bottom: 5px; color: var(--teal-deep); }
.feat .f-top svg { width: 17px; height: 17px; flex: none; }
.feat h5 { margin: 0; font-size: 13.5px; font-weight: 800; color: var(--ink); }
.feat p { margin: 0; font-size: 12px; color: #6a797c; text-align: justify; }

/* ---------- 标签 chips ---------- */
.chips { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-bottom: 14px; }
.chips .ch-label { font-size: 13px; font-weight: 800; color: var(--ink); margin-right: 2px; }
.chips span:not(.ch-label) {
  font-size: 12px; font-weight: 600; color: var(--teal-deep);
  background: var(--teal-soft); border: 1px solid var(--teal-line);
  border-radius: 999px; padding: 3px 11px;
}

/* ---------- 图片 images ---------- */
.images { display: grid; gap: 10px; margin-bottom: 14px; }
.images.md { grid-template-columns: 1fr 1fr; }
.images.sm { grid-template-columns: repeat(3, 1fr); }
.images .ph {
  margin: 0; background: var(--card); border: 1px solid var(--line);
  border-radius: 12px; overflow: hidden; display: flex; align-items: center; justify-content: center;
}
.images .ph img { display: block; width: 100%; height: 100%; object-fit: cover; }
.images.md .ph { aspect-ratio: 4 / 3; }
.images.md .ph img { object-fit: contain; }
.images.sm .ph { aspect-ratio: 9 / 17; }

/* ---------- kv 表 ---------- */
.kv { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; margin-bottom: 14px; }
.kv .kv-row { display: flex; border-top: 1px solid var(--line); }
.kv .kv-row:first-child { border-top: 0; }
.kv .kv-k { flex: none; width: 112px; background: var(--teal-soft); color: #37555f; font-size: 13px; font-weight: 700; padding: 11px 12px; }
.kv .kv-v { flex: 1; font-size: 13.5px; color: #42535a; padding: 11px 12px; font-weight: 600; }

/* ---------- 二维码 qrcodes ---------- */
.qrcodes { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 14px; }
.qrcodes .qr {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 14px 12px 12px; text-align: center; box-shadow: 0 1px 3px rgba(70, 80, 75, .05);
}
.qrcodes .qr img { width: 112px; height: 112px; display: block; margin: 0 auto 8px; border-radius: 8px; }
.qrcodes .qr h5 { margin: 0; font-size: 13.5px; font-weight: 800; color: var(--ink); }
.qrcodes .qr p { margin: 2px 0 0; font-size: 11.5px; color: var(--muted); }

/* ---------- 封面 ---------- */
.slide.cover {
  padding: 0;
  background: linear-gradient(168deg, #7b968f 0%, #5d7d78 42%, #41615d 100%);
}
.cover-bg { position: absolute; inset: 0; overflow: hidden; }
.cover-bg .wave { position: absolute; left: -20%; width: 140%; height: 42%; opacity: .5; }
.cover-bg .w1 { top: 4%; transform: rotate(-7deg); }
.cover-bg .w2 { bottom: -2%; transform: rotate(5deg); }
.cover-inner {
  position: relative; z-index: 1; flex: 1;
  display: flex; flex-direction: column; justify-content: center;
  padding: 60px 26px 96px; max-width: var(--wrap); margin: 0 auto; width: 100%;
}
.cover-brand { display: flex; align-items: baseline; flex-wrap: wrap; gap: 8px; margin-bottom: 14px; }
.cover-brand .b-main {
  font-size: 44px; font-weight: 900; letter-spacing: 2px; line-height: 1.15;
  background: linear-gradient(180deg, var(--gold-1) 12%, var(--gold-2) 58%, var(--gold-3));
  -webkit-background-clip: text; background-clip: text; color: transparent;
  filter: drop-shadow(0 2px 0 rgba(140, 60, 0, .35)) drop-shadow(0 6px 14px rgba(0, 0, 0, .25));
}
.cover-brand .b-suffix { font-size: 22px; font-weight: 800; color: #ffffff; letter-spacing: 3px; text-shadow: 0 2px 10px rgba(0,0,0,.25); }
.cover-tagline { margin: 0 0 18px; font-size: 17px; font-weight: 600; color: #eef6f4; letter-spacing: 1px; text-shadow: 0 1px 8px rgba(0,0,0,.2); }
.cover-site {
  display: inline-flex; align-self: flex-start; align-items: center; gap: 7px;
  font-size: 13px; font-weight: 700; color: #dff3ef;
  border: 1px solid rgba(255, 255, 255, .35); border-radius: 999px; padding: 6px 14px;
  background: rgba(255, 255, 255, .1); backdrop-filter: blur(4px);
}
.cover-site svg { width: 15px; height: 15px; }
.cover-foot {
  position: relative; z-index: 1; width: 100%;
  padding: 0 26px calc(24px + env(safe-area-inset-bottom, 0px));
}
.cover-foot .foot-card {
  max-width: calc(var(--wrap) - 52px); margin: 0 auto;
  background: rgba(255, 255, 255, .12); border: 1px solid rgba(255, 255, 255, .22);
  border-radius: 12px; backdrop-filter: blur(6px);
  display: grid; grid-template-columns: 1fr; gap: 4px; padding: 12px 16px;
}
@media (min-width: 560px) { .cover-foot .foot-card { grid-template-columns: 1fr 1fr; gap: 10px; } }
.cover-foot .f-row { display: flex; align-items: center; gap: 8px; font-size: 12.5px; color: #ecf5f3; }
.cover-foot .f-row svg { flex: none; width: 15px; height: 15px; color: #9fe8dd; }

.scroll-hint {
  position: absolute; z-index: 2; left: 50%; bottom: calc(128px + env(safe-area-inset-bottom, 0px));
  transform: translateX(-50%); display: flex; flex-direction: column; align-items: center; gap: 2px;
  color: rgba(255, 255, 255, .85); font-size: 11px; letter-spacing: 2px;
  animation: hintFloat 1.8s ease-in-out infinite; pointer-events: none;
}
.scroll-hint svg { width: 20px; height: 20px; }
@keyframes hintFloat { 0%, 100% { transform: translate(-50%, 0); } 50% { transform: translate(-50%, 7px); } }
.slide:not(.cover) .scroll-hint { display: none; }
html.pc .scroll-hint { display: none; }

/* ---------- 联系页 dark ---------- */
.contact-rows { display: grid; gap: 12px; margin-bottom: 22px; }
.contact-rows .row {
  display: flex; align-items: center; gap: 12px;
  background: rgba(255, 255, 255, .1); border: 1px solid rgba(255, 255, 255, .22);
  border-radius: var(--radius); padding: 14px 16px; backdrop-filter: blur(5px);
}
.contact-rows .row svg { flex: none; width: 22px; height: 22px; color: #8fe6d9; }
.contact-rows .row .r-l { display: block; font-size: 12px; color: #cfe4e0; letter-spacing: 1px; }
.contact-rows .row .r-v { display: block; font-size: 15.5px; font-weight: 800; color: #fff; }
.contact-note { text-align: center; font-size: 15.5px; font-weight: 800; color: #fff; margin: 0 0 16px; letter-spacing: .5px; }
.contact-perks { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
@media (max-width: 480px) { .contact-perks { grid-template-columns: 1fr; } }
.contact-perks .perk {
  background: rgba(255, 255, 255, .08); border: 1px solid rgba(255, 255, 255, .18);
  border-radius: 12px; padding: 12px; text-align: center;
}
.contact-perks .perk svg { width: 22px; height: 22px; color: #8fe6d9; }
.contact-perks .perk h5 { margin: 6px 0 2px; font-size: 13px; font-weight: 800; color: #fff; }
.contact-perks .perk p { margin: 0; font-size: 11px; color: #c9dedb; }

/* ---------- 对公账户 ---------- */
.bank-img { margin: 0; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); background: #fff; }
.bank-img img { display: block; width: 100%; }

/* ---------- 导航 UI ---------- */
#progress { position: fixed; z-index: 40; top: 0; left: 0; height: 3px; width: 0; background: linear-gradient(90deg, var(--teal), #6fd8c8); transition: width .3s ease; pointer-events: none; }
html.pc #progress { display: none; }
#counter {
  position: fixed; z-index: 40; right: 12px; top: 14px;
  font-size: 11px; font-weight: 700; letter-spacing: 1px; color: #6c7f7c;
  background: rgba(255, 255, 255, .75); border: 1px solid var(--line);
  border-radius: 999px; padding: 3px 10px; backdrop-filter: blur(4px);
  user-select: none; pointer-events: none;
}
#dots {
  position: fixed; z-index: 40; left: 50%; bottom: calc(10px + env(safe-area-inset-bottom, 0px));
  transform: translateX(-50%); display: flex; gap: 7px; align-items: center;
  background: rgba(255, 255, 255, .8); border: 1px solid var(--line);
  border-radius: 999px; padding: 7px 12px; backdrop-filter: blur(4px);
}
#dots .dot { width: 7px; height: 7px; border-radius: 50%; background: #cfd8d4; border: 0; padding: 0; cursor: pointer; transition: all .25s; }
#dots .dot.on { background: var(--teal); width: 18px; border-radius: 4px; }
.navbtns { position: fixed; z-index: 40; right: 14px; top: 50%; transform: translateY(-50%); display: none; flex-direction: column; gap: 10px; }
html.pc .navbtns { display: flex; }
.navbtns button {
  width: 38px; height: 38px; border-radius: 50%; border: 1px solid rgba(255,255,255,.5);
  background: rgba(255, 255, 255, .28); color: #42544f; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 2px 8px rgba(30, 45, 40, .18); backdrop-filter: blur(4px);
}
.navbtns button:hover { background: rgba(255, 255, 255, .85); }
.navbtns button:active { transform: scale(.93); }
.navbtns svg { width: 18px; height: 18px; }

/* ============================================================
 * PC:16:9 幻灯片画布(与原 PPT 同比例)
 * ============================================================ */
html.pc body {
  height: 100dvh; overflow: hidden;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  background: radial-gradient(1200px 700px at 50% 40%, #3d4f4a 0%, #232e2b 70%);
}
html.pc #deck {
  width: 960px; height: 540px; flex: none;
  transform: scale(var(--s, 1));
  transform-origin: center center;
  position: relative; overflow: hidden;
  scroll-snap-type: none; overflow-y: hidden;
  border-radius: 6px;
  box-shadow: 0 24px 80px rgba(0, 0, 0, .45), 0 0 0 1px rgba(255, 255, 255, .06);
}
html.pc .slide {
  position: absolute; inset: 0; min-height: 0;
  display: flex; flex-direction: column; justify-content: flex-start;
  padding: 30px 42px 26px;
  opacity: 0; visibility: hidden; transform: translateY(16px);
  transition: opacity .45s ease, transform .45s ease, visibility 0s linear .45s;
}
html.pc .slide.active {
  opacity: 1; visibility: visible; transform: none;
  transition: opacity .45s ease, transform .45s ease;
  z-index: 1;
}
html.pc .slide .wrap { max-width: none; margin: 0; width: 100%; flex: 1; min-height: 0; display: flex; flex-direction: column; }
/* 垂直居中:内容超出画布时 auto margin 归零,自动退化为顶部对齐,避免双向裁切 */
html.pc .slide .wrap > :first-child { margin-top: auto; }
html.pc .slide .wrap > :last-child { margin-bottom: auto; }

/* PC 标题与密度 */
html.pc .s-title { margin-bottom: 16px; }
html.pc .s-title h2 { font-size: 27px; }
html.pc .blk-p { font-size: 15.5px; margin-bottom: 12px; }
html.pc .sec { margin-bottom: 10px; }
html.pc .sec h4 { font-size: 16px; }
html.pc .sec p { font-size: 13.5px; }
html.pc .banner { font-size: 13.5px; margin-bottom: 0; }
html.pc .banner.light { margin-bottom: 0; }

/* PC:卡片三列(cols3 / cards.c3) */
html.pc .layout-cols3 .cards, html.pc .cards.c3 { grid-template-columns: repeat(3, 1fr); gap: 14px; }
html.pc .layout-cols3 .banner { margin-top: 4px; margin-bottom: 0; }
html.pc .card p { font-size: 12.5px; }

/* PC:流程横排(flow) */
html.pc .layout-flow .steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; }
html.pc .layout-flow .steps li { padding: 0; }
html.pc .layout-flow .steps li::before { display: none; }
html.pc .layout-flow .steps .st-no { position: static; margin-bottom: 8px; box-shadow: none; }
html.pc .layout-flow .steps h4 { font-size: 14.5px; }
html.pc .layout-flow .steps p { font-size: 11.5px; }
html.pc .layout-flow .cards.soft { grid-template-columns: repeat(3, 1fr); }
html.pc .layout-flow .sec { margin-top: 6px; }

/* PC:技术沉淀左右分栏(duo) —— 显式网格区域:标题整行/架构+能力/横幅整行 */
html.pc .layout-duo .wrap {
  display: grid; grid-template-columns: 340px 1fr; gap: 14px 18px;
  grid-template-areas: "t t" "a f" "b b"; grid-template-rows: auto 1fr auto;
}
html.pc .layout-duo .wrap > :first-child, html.pc .layout-duo .wrap > :last-child { margin: 0; }
html.pc .layout-duo .s-title { grid-area: t; }
html.pc .layout-duo .arch { grid-area: a; margin: 0; align-self: start; }
html.pc .layout-duo .arch .a-row { font-size: 12.5px; padding: 9px 0; }
html.pc .layout-duo .features { grid-area: f; margin: 0; align-content: start; }
html.pc .layout-duo .feat { padding: 10px 12px; }
html.pc .layout-duo .feat p { font-size: 11.5px; }
html.pc .layout-duo .banner { grid-area: b; margin: 0; }

/* PC:图文分栏(media-left / media-right)
 * 行高锁定 minmax(0,1fr):文字列再长也不会撑开画布,超出部分裁切 */
html.pc .pc-cols { display: grid; flex: 1; min-height: 0; gap: 0 20px;
  grid-template-areas: "main media"; grid-template-columns: 1fr 340px;
  grid-template-rows: minmax(0, 1fr); }
html.pc .layout-media-left .pc-cols { grid-template-areas: "media main"; grid-template-columns: 340px 1fr; }
html.pc .pc-main { grid-area: main; display: block; overflow: hidden; overflow-y: auto; scrollbar-width: none; }
html.pc .pc-main::-webkit-scrollbar { display: none; }
html.pc .pc-media { grid-area: media; display: flex; flex-direction: column; gap: 10px; justify-content: center; overflow: hidden; }
html.pc .pc-media .ph { flex: 0 1 auto; min-height: 0; max-height: 178px; aspect-ratio: auto; }
html.pc .pc-media .ph img { object-fit: contain; }
html.pc .pc-media .images { display: flex; flex-direction: column; margin-bottom: 0; }
html.pc .images.sm { display: grid; grid-template-columns: repeat(3, 1fr); }
html.pc .images.sm .ph { aspect-ratio: 9 / 16; max-height: none; height: auto; align-self: start; }
/* 分栏页纵向密度收紧,给文字列留出画布内余量 */
html.pc .layout-media-left .sec, html.pc .layout-media-right .sec { margin-bottom: 8px; }
html.pc .layout-media-left .bullets, html.pc .layout-media-right .bullets { margin-bottom: 10px; }
html.pc .layout-media-left .bullets li, html.pc .layout-media-right .bullets li { margin-bottom: 5px; }
html.pc .layout-media-left .cols, html.pc .layout-media-right .cols { margin-bottom: 10px; }
html.pc .layout-media-left .metrics, html.pc .layout-media-right .metrics { gap: 8px; margin-bottom: 0; }
html.pc .layout-media-left .metric, html.pc .layout-media-right .metric { padding: 8px 10px; }
html.pc .layout-media-left .banner, html.pc .layout-media-right .banner { margin-top: 12px; margin-bottom: 0; }

/* PC:关于我们页(含二维码时,联系表与二维码左右并排) */
html.pc .slide .wrap:has(.qrcodes) {
  display: grid; grid-template-columns: 1.15fr 1fr; gap: 12px 22px; align-content: center;
}
html.pc .slide .wrap:has(.qrcodes) > .s-title, html.pc .slide .wrap:has(.qrcodes) > .blk-p { grid-column: 1 / -1; }
html.pc .slide .wrap:has(.qrcodes) > .blk-p { margin-bottom: 0; }
html.pc .slide .wrap:has(.qrcodes) > .kv { margin-bottom: 0; align-self: center; }
html.pc .slide .wrap:has(.qrcodes) > .qrcodes { margin-bottom: 0; align-self: center; }
html.pc .qrcodes .qr img { width: 128px; height: 128px; }

/* PC:实力页(strength)与 kv */
html.pc .metrics { grid-template-columns: repeat(2, 1fr); gap: 8px; }
html.pc .metric { padding: 9px 12px; }
html.pc .metric .m-v { font-size: 18px; }
html.pc .cards.c3 { gap: 12px; }
html.pc .layout-stack .images.md .ph { height: 120px; aspect-ratio: auto; }
html.pc .layout-stack .images.md { margin-bottom: 0; }
html.pc .layout-stack .chips { margin-bottom: 10px; }
html.pc .layout-stack .cards { margin-bottom: 10px; }
html.pc .layout-stack .card p { font-size: 12.5px; }
html.pc .kv { margin-bottom: 0; }
html.pc .kv .kv-k { width: 118px; padding: 10px 12px; }
html.pc .kv .kv-v { padding: 10px 12px; font-size: 13px; }
html.pc .contact-rows { grid-template-columns: 1fr 1fr; gap: 14px; margin-bottom: 18px; }
html.pc .layout-stack .images.md .ph { height: 150px; aspect-ratio: auto; }

/* PC 封面/联系/深色页铺满画布 */
html.pc .slide.cover { justify-content: flex-start; }
html.pc .cover-inner { flex: 1; padding: 40px 52px; justify-content: center; }
html.pc .cover-brand .b-main { font-size: 52px; }
html.pc .cover-brand .b-suffix { font-size: 24px; }
html.pc .cover-tagline { font-size: 19px; }
html.pc .cover-foot { padding: 0 52px 30px; }
html.pc .cover-foot .foot-card { max-width: none; }
html.pc .slide.dark { padding: 30px 42px 26px; }
html.pc .contact-note { font-size: 16px; }

/* ============================================================
 * 打印:每页一张 16:9 幻灯片(Chrome 打印成 PDF 用)
 * ============================================================ */
@media print {
  @page { size: 960px 540px; margin: 0; }
  *, *::before, *::after { -webkit-print-color-adjust: exact; print-color-adjust: exact; }
  html, body { background: #fff; }
  html.pc body, body { display: block; height: auto; overflow: visible; }
  #progress, #counter, #dots, .navbtns, .scroll-hint { display: none !important; }
  #deck { width: 960px; height: auto; transform: none; overflow: visible; border-radius: 0; box-shadow: none; scroll-snap-type: none; }
  .slide {
    position: static; min-height: 0; width: 960px; height: 540px;
    opacity: 1 !important; visibility: visible !important; transform: none !important;
    page-break-after: always; break-after: page; overflow: hidden;
    display: flex; flex-direction: column; justify-content: flex-start;
    padding: 30px 42px 26px;
  }
  .slide.cover { padding: 0; }
  .blk { opacity: 1 !important; transform: none !important; transition: none !important; }
  .slide .wrap { max-width: none; display: flex; flex-direction: column; flex: 1; min-height: 0; }
  .slide .wrap > :first-child { margin-top: auto; }
  .slide .wrap > :last-child { margin-bottom: auto; }
  /* 复用 PC 版式密度 */
  .s-title h2 { font-size: 27px; }
  .layout-cols3 .cards, .cards.c3 { grid-template-columns: repeat(3, 1fr); gap: 14px; }
  .card p { font-size: 12.5px; }
  .layout-flow .steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; }
  .layout-flow .steps li { padding: 0; }
  .layout-flow .steps li::before { display: none; }
  .layout-flow .steps .st-no { position: static; margin-bottom: 8px; box-shadow: none; }
  .layout-flow .steps p { font-size: 11.5px; }
  .layout-flow .cards.soft { grid-template-columns: repeat(3, 1fr); }
  .layout-duo .wrap {
    display: grid; grid-template-columns: 340px 1fr; gap: 14px 18px;
    grid-template-areas: "t t" "a f" "b b"; grid-template-rows: auto 1fr auto;
  }
  .layout-duo .wrap > :first-child, .layout-duo .wrap > :last-child { margin: 0; }
  .layout-duo .s-title { grid-area: t; }
  .layout-duo .arch { grid-area: a; margin: 0; align-self: start; }
  .layout-duo .arch .a-row { font-size: 12.5px; padding: 9px 0; }
  .layout-duo .features { grid-area: f; margin: 0; align-content: start; }
  .layout-duo .feat { padding: 10px 12px; }
  .layout-duo .feat p { font-size: 11.5px; }
  .layout-duo .banner { grid-area: b; margin: 0; }
  .pc-cols { display: grid; flex: 1; min-height: 0; gap: 0 20px;
    grid-template-areas: "main media"; grid-template-columns: 1fr 340px;
    grid-template-rows: minmax(0, 1fr); }
  .layout-media-left .pc-cols { grid-template-areas: "media main"; grid-template-columns: 340px 1fr; }
  .pc-main { grid-area: main; display: block; overflow: hidden; }
  .pc-media { grid-area: media; display: flex; flex-direction: column; gap: 10px; justify-content: center; overflow: hidden; }
  .pc-media .ph { flex: 0 1 auto; min-height: 0; max-height: 178px; aspect-ratio: auto; }
  .pc-media .ph img { object-fit: contain; }
  .pc-media .images { display: flex; flex-direction: column; margin-bottom: 0; }
  .images.sm { display: grid; grid-template-columns: repeat(3, 1fr); }
  .images.sm .ph { aspect-ratio: 9 / 16; max-height: none; height: auto; align-self: start; }
  .layout-media-left .banner, .layout-media-right .banner { margin-top: 12px; margin-bottom: 0; }
  .metrics { grid-template-columns: repeat(2, 1fr); gap: 8px; }
  .metric { padding: 9px 12px; }
  .metric .m-v { font-size: 18px; }
  /* 图文分栏页在打印侧再收紧纵向间距,确保横幅不与内容相撞 */
  .layout-media-left .sec, .layout-media-right .sec { margin-bottom: 8px; }
  .layout-media-left .bullets li, .layout-media-right .bullets li { margin-bottom: 5px; }
  .layout-media-left .cols, .layout-media-right .cols { margin-bottom: 10px; }
  .layout-media-left .metrics, .layout-media-right .metrics { gap: 8px; margin-bottom: 10px; }
  .layout-media-left .metric, .layout-media-right .metric { padding: 8px 10px; }
  .layout-media-left .banner, .layout-media-right .banner { margin-top: 10px; }
  .kv { margin-bottom: 0; }
  /* 关于我们页:联系表与二维码左右并排 */
  .slide .wrap:has(.qrcodes) { display: grid; grid-template-columns: 1.15fr 1fr; gap: 12px 22px; align-content: center; }
  .slide .wrap:has(.qrcodes) > .s-title, .slide .wrap:has(.qrcodes) > .blk-p { grid-column: 1 / -1; }
  .slide .wrap:has(.qrcodes) > .blk-p { margin-bottom: 0; }
  .slide .wrap:has(.qrcodes) > .kv { margin-bottom: 0; align-self: center; }
  .slide .wrap:has(.qrcodes) > .qrcodes { margin-bottom: 0; align-self: center; }
  .qrcodes .qr img { width: 128px; height: 128px; }
  .layout-stack .images.md .ph { height: 120px; aspect-ratio: auto; }
  .layout-stack .images.md { margin-bottom: 0; }
  .layout-stack .chips { margin-bottom: 10px; }
  .layout-stack .cards { margin-bottom: 10px; }
  .layout-stack .card p { font-size: 12.5px; }
  .contact-rows { grid-template-columns: 1fr 1fr; gap: 14px; margin-bottom: 18px; }
  .cover-inner { flex: 1; padding: 40px 52px; justify-content: center; }
  .cover-brand .b-main { font-size: 52px; }
  .cover-brand .b-suffix { font-size: 24px; }
  .cover-tagline { font-size: 19px; }
  .cover-foot { padding: 0 52px 30px; }
  .cover-foot .foot-card { max-width: none; }
}