/* ==========================================================================
   KAKALOK 新首页 · Beta（2026-10-16）
   视觉基准：kakalok-brand-design DEMO
   —— 白纸底 + 墨黑 + 咔粉 + 纸灰三色卡系统；大号圆体标题；↗ 下划线链接。
   内容仍全部来自后台（data-path 结构与线上版同源）。
   ========================================================================== */

:root {
  --ink: #111111;
  --ink-2: #444444;
  --mut: #777777;
  --line: #e8e6e2;
  --paper: #f6f5f2;
  --blush: #fdeef4;
  --pink: #f8a8c8;
  --pink-deep: #ef7fae;
  --green: #8dff5e;
  --wrap: 1200px;
  --r-lg: 20px;
  --r-md: 14px;
  --ease: cubic-bezier(.22, .61, .36, 1);
}

/* v21.2：demo 同款自托管字体（KAKA Round = 方圆体；Unbounded = 拉丁展示体） */
@font-face {
  font-family: 'KAKA Round';
  src: url('../assets/fonts/fangyuan-round.woff2') format('woff2');
  font-weight: 100 900;
  font-display: swap;
}
@font-face {
  font-family: 'Unbounded';
  src: url('../assets/fonts/unbounded-latin.woff2') format('woff2');
  font-weight: 100 900;
  font-display: swap;
  unicode-range: U+0000-00FF;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "KAKA Round", ui-rounded, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: #fff;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 32px; }
@media (max-width: 719px) { .wrap { padding: 0 18px; } }

/* ------------------------------------------------ 顶部黑条 + 导航 */
.topbar {
  background: var(--ink);
  color: #fff;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .18em;
}
.topbar-in {
  max-width: var(--wrap); margin: 0 auto; padding: 7px 32px;
  display: flex; justify-content: space-between; align-items: center;
}
.topbar a { color: rgba(255,255,255,.8); }
.topbar a:hover { color: #fff; }
@media (max-width: 719px) { .topbar-in { padding: 7px 18px; } .topbar a { display: none; } }

.nav {
  position: sticky; top: 0; z-index: 60;
  background: rgba(255,255,255,.94);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav-in {
  max-width: var(--wrap); margin: 0 auto; padding: 0 32px;
  display: flex; align-items: center; gap: 28px; height: 64px;
}
/* v21-1：logo 左缘与页面模块内容左缘严格对齐（wrap 同 padding，logo 顶格） */
.nav-logo { display: flex; align-items: center; margin-right: auto; }
.nav-logo img { height: 34px; width: auto; }
.nav-links { display: flex; gap: 22px; font-size: 13.5px; font-weight: 700; }
.nav-links a { position: relative; padding: 4px 0; color: var(--ink-2); white-space: nowrap; }
.nav-links a:hover, .nav-links a.on { color: var(--ink); }
.nav-links a.on::after {
  content: ''; position: absolute; left: 0; right: 0; bottom: -2px;
  height: 2px; background: var(--pink); border-radius: 2px;
}
.nav-cta {
  background: var(--ink); color: #fff !important;
  font-size: 12.5px; font-weight: 800;
  padding: 9px 16px; border-radius: 999px;
  white-space: nowrap; transition: transform .2s var(--ease);
}
.nav-cta:hover { transform: translateY(-1px); }
@media (max-width: 1023px) { .nav-links { display: none; } }
@media (max-width: 719px) { .nav-in { padding: 0 18px; } }

/* ------------------------------------------------ 通用组件 */
.kicker {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 11px; font-weight: 900; letter-spacing: .2em;
  color: var(--ink); text-transform: uppercase;
}
.kicker::before { content: ''; width: 7px; height: 7px; border-radius: 50%; background: var(--pink-deep); }
.sec-title {
  font-size: clamp(30px, 4.6vw, 52px);
  font-weight: 900; line-height: 1.2; letter-spacing: -.045em;
  margin-top: 14px;
}
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13.5px; font-weight: 800;
  padding: 12px 22px; border-radius: 999px;
  border: 2px solid var(--ink);
  transition: transform .2s var(--ease), background .2s var(--ease), color .2s var(--ease);
}
.btn:hover { transform: translateY(-2px); }
.btn-pink { background: var(--pink); color: var(--ink); border-color: var(--pink); }
.btn-ink { background: var(--ink); color: #fff; }
.btn-line { background: none; color: var(--ink); }
.arr { font-style: normal; font-weight: 900; }
.link-u {
  font-size: 13px; font-weight: 800;
  border-bottom: 2px solid var(--ink); padding-bottom: 2px;
}
.link-u:hover { color: var(--pink-deep); border-color: var(--pink-deep); }

/* ------------------------------------------------ Hero（v21.2：白底左文右大媒体） */
.hero {
  background: #fff; color: var(--ink); overflow: hidden; position: relative;
  border-bottom: 1px solid var(--line);
}
.hero-slides { position: relative; }
.hero-slide { display: none; }
.hero-slide.on { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); min-height: 560px; }
@media (max-width: 899px) { .hero-slide.on { grid-template-columns: 1fr; min-height: 0; } }
.hero-copy {
  display: flex; flex-direction: column; justify-content: center; gap: 18px;
  padding: 72px 48px 72px max(32px, calc((100vw - var(--wrap)) / 2 + 32px));
}
@media (max-width: 719px) { .hero-copy { padding: 44px 18px 30px; } }
.hero-copy .kicker { color: var(--pink-deep); }
.hero-copy .kicker::before { background: var(--pink-deep); }
.hero-title { font-size: clamp(34px, 5vw, 60px); font-weight: 900; line-height: 1.2; letter-spacing: -.045em; }
.hero-sub { color: var(--ink-2); font-size: 15px; max-width: 40ch; }
.hero-media { position: relative; min-height: 420px; }
.hero-media img {
  position: absolute; inset: 0; width: 100%; height: 100%;
  object-fit: cover;
}
.hero-media video {
  position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover;
}
@media (max-width: 899px) {
  .hero-media { min-height: 300px; }
  .hero-media img, .hero-media video { position: relative; height: 300px; }
}
.hero-foot {
  display: flex; align-items: center; gap: 14px;
  padding: 0 32px 26px; color: var(--mut);
  font-size: 12.5px; font-weight: 700;
}
.hero-foot .hbtn {
  width: 38px; height: 38px; border-radius: 50%;
  border: 1.5px solid var(--line); background: none; color: var(--ink);
  display: grid; place-items: center; transition: border-color .2s;
}
.hero-foot .hbtn:hover { border-color: var(--ink); }
.hero-foot .hnum { margin-left: auto; letter-spacing: .1em; }

/* ------------------------------------------------ WHAT IS KAKALOK + 组合示意 */
.about { padding: 84px 0 40px; }
.about-grid { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); gap: 48px; align-items: start; }
@media (max-width: 899px) { .about-grid { grid-template-columns: 1fr; gap: 22px; } }
.about-leads p { color: var(--ink-2); font-size: 15px; }
.about-leads p + p { margin-top: 10px; }
.about-leads .l1 { font-size: 17px; font-weight: 700; color: var(--ink); }

/* 组合条：blush 粉底，01/02/03 三组，+ 号连接 */
.combo {
  margin-top: 44px;
  background: var(--blush);
  border-radius: var(--r-lg);
  padding: 26px clamp(18px, 3vw, 40px) 22px;
  display: grid; grid-template-columns: 1.4fr auto 1fr auto 1.4fr;
  gap: 14px; align-items: stretch;
}
@media (max-width: 1023px) { .combo { grid-template-columns: 1fr; } .combo-plus { justify-self: center; transform: rotate(90deg); } }
.combo-step { display: flex; flex-direction: column; gap: 12px; }
.combo-k { font-size: 11px; font-weight: 800; letter-spacing: .12em; color: var(--pink-deep); text-align: center; }
.combo-items { display: flex; gap: 14px; justify-content: center; flex: 1; }
.combo-item {
  text-align: center;
  flex: 1; min-width: 0; max-width: 230px;
  display: flex; flex-direction: column; align-items: center; gap: 8px;
}
.combo-item .im { height: 110px; display: grid; place-items: center; }
.combo-item .im img { max-height: 110px; max-width: 150px; width: auto; object-fit: contain; }
.combo-item .nm { font-size: 13px; font-weight: 900; }
.combo-item .sb { font-size: 11px; color: var(--mut); margin-top: -6px; }
.combo-plus { display: grid; place-items: center; color: var(--pink-deep); font-size: 30px; font-weight: 300; align-self: center; }
.combo-note {
  display: flex; justify-content: space-between; gap: 20px; align-items: center;
  margin-top: 12px; color: var(--mut); font-size: 12px; flex-wrap: wrap;
}
@media (max-width: 719px) { .combo-note { flex-direction: column; align-items: flex-start; } }

/* ------------------------------------------------ 吸 · 转 · 换 场景示意 */
.scenes { padding: 56px 0 24px; }
.scenes-head { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1fr); gap: 40px; align-items: end; margin-bottom: 34px; }
@media (max-width: 899px) { .scenes-head { grid-template-columns: 1fr; gap: 12px; } }
.scenes-desc { color: var(--ink-2); font-size: 14.5px; }
/* v21.2：场景条去黑改纸灰底，大字墨色，圆形媒体放大并支持视频/gif */
.scene-grid {
  background: var(--paper); color: var(--ink);
  border-radius: var(--r-lg);
  padding: clamp(26px, 4vw, 52px);
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px;
}
@media (max-width: 899px) { .scene-grid { grid-template-columns: 1fr; } }
.scene { display: flex; gap: 18px; align-items: center; }
.scene-ch {
  font-size: clamp(38px, 5vw, 56px); font-weight: 900; line-height: 1;
  color: var(--ink); writing-mode: horizontal-tb;
}
.scene-body .t { font-weight: 900; font-size: 16px; margin-bottom: 4px; }
.scene-body .d { color: var(--ink-2); font-size: 12.5px; margin-bottom: 10px; }
.scene-img {
  width: 128px; height: 128px; border-radius: 50%; overflow: hidden;
  background: #fff; flex: none; cursor: zoom-in;
  display: grid; place-items: center;
}
.scene-img img, .scene-img video { width: 100%; height: 100%; object-fit: cover; }
@media (max-width: 559px) { .scene-img { width: 108px; height: 108px; } }

/* ------------------------------------------------ 咔咔零配件 6 卡 */
.parts { padding: 64px 0; }
.parts .sec-title { margin-bottom: 30px; }
.parts-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 899px) { .parts-grid { grid-template-columns: 1fr; } }
.part-card {
  border-radius: var(--r-lg);
  padding: 26px 26px 22px;
  display: grid; grid-template-columns: minmax(0,1fr) auto; gap: 18px; align-items: center;
  min-height: 210px;
  transition: transform .25s var(--ease);
}
.part-card:hover { transform: translateY(-3px); }
.part-card.paper { background: var(--paper); }
.part-card.blush { background: var(--blush); }
.part-card.ink { background: var(--ink); color: #fff; }
.part-card .pk { font-size: 10.5px; font-weight: 900; letter-spacing: .18em; }
.part-card .pk::before { content: '● '; color: var(--pink-deep); font-size: 8px; vertical-align: 2px; }
.part-card.ink .pk::before { color: var(--pink); }
.part-card .pn { font-size: 24px; font-weight: 900; margin: 6px 0 8px; }
.part-card .pl1 { font-size: 14px; font-weight: 700; }
.part-card .pl2 { font-size: 12.5px; color: var(--mut); margin-top: 2px; }
.part-card.ink .pl2 { color: rgba(255,255,255,.6); }
.part-card .chips { display: flex; gap: 6px; margin-top: 10px; flex-wrap: wrap; }
.part-card .chips span {
  font-size: 11px; font-weight: 700; padding: 3px 10px;
  border: 1.5px solid currentColor; border-radius: 999px; opacity: .8;
}
.part-card .link-u { display: inline-block; margin-top: 14px; font-size: 12.5px; }
.part-card .pimg { width: 150px; height: 150px; object-fit: contain; }
@media (max-width: 559px) { .part-card { grid-template-columns: 1fr; } .part-card .pimg { width: 120px; height: 120px; } }
.part-card.coming { opacity: .85; }

/* ------------------------------------------------ IP 联名 */
.ipsec { padding: 64px 0; }
.ipsec .sec-title { margin-bottom: 30px; }
.ip-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 18px; grid-auto-flow: dense; }
.ip-card { grid-column: span 2; }
.ip-card.big { grid-column: span 3; }
.ip-card.big .im { height: 420px; }
@media (max-width: 899px) { .ip-grid { grid-template-columns: 1fr; } .ip-card, .ip-card.big { grid-column: auto; } }
.ip-card {
  background: var(--ink); color: #fff; border-radius: var(--r-lg);
  overflow: hidden; position: relative; cursor: zoom-in;
}
.ip-card .im { height: 320px; overflow: hidden; }
.ip-card .im img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s var(--ease); }
.ip-card:hover .im img { transform: scale(1.04); }
.ip-card .body { padding: 18px 22px 20px; }
.ip-card .k { font-size: 10.5px; font-weight: 900; letter-spacing: .2em; color: var(--pink); }
.ip-card .nm { font-size: 20px; font-weight: 900; margin: 6px 0 4px; }
.ip-card .link-u { color: #fff; border-color: #fff; font-size: 12.5px; display: inline-block; margin-top: 10px; }
/* v21.2：手机上 IP 卡压缩高度与内距，不再撑满一屏 */
@media (max-width: 559px) {
  .ip-card .im { height: 62vw; }
  .ip-card.big .im { height: 62vw; }
  .ip-card .body { padding: 14px 16px 16px; }
  .ip-card .nm { font-size: 17px; }
}

/* ------------------------------------------------ 品牌合作 */
.brandsec { padding: 64px 0; background: var(--paper); }
.brandsec .sec-title { margin-bottom: 30px; }
.brand-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
@media (max-width: 899px) { .brand-grid { grid-template-columns: 1fr; } }
.brand-card { background: #fff; border-radius: var(--r-lg); overflow: hidden; display: flex; flex-direction: column; }
/* v21.2：品牌封面去黑色 tone，图片占满更大区域，支持视频/gif */
.brand-card .cover {
  height: 300px;
  display: grid; place-items: center; cursor: zoom-in; position: relative; overflow: hidden;
}
.brand-card .cover.blush { background: var(--blush); }
.brand-card .cover.ink { background: var(--pink); }
.brand-card .cover.paper { background: var(--paper); }
.brand-card .cover img { max-width: 86%; max-height: 86%; object-fit: contain; }
.brand-card .cover .prod-photo { width: 100%; height: 100%; object-fit: cover; }
.brand-card .cover video { width: 100%; height: 100%; object-fit: cover; }
.brand-card .cover .logo-img { max-width: 62%; max-height: 62%; }
.brand-card .cover .logo-word {
  font-size: clamp(26px, 3vw, 40px); font-weight: 800; letter-spacing: -.02em;
}
.brand-card .cover.ink .logo-word { color: var(--ink); }
.brand-card .body { padding: 22px 26px 26px; }
.brand-card .tag { font-size: 11.5px; color: var(--mut); }
.brand-card .nm { font-size: 24px; font-weight: 800; letter-spacing: -.01em; margin: 4px 0 8px; }
.brand-card .ds { font-size: 13.5px; color: var(--ink-2); margin-bottom: 14px; }

/* ------------------------------------------------ 他们都在咔 */
.comm { padding: 64px 0; }
.comm .sec-title { margin-bottom: 6px; }
.comm .lead { color: var(--mut); font-size: 13.5px; margin-bottom: 26px; }
/* 瀑布流：CSS columns，图自然高度、列间自然错位（demo 同款） */
.comm-grid { columns: 3; column-gap: 16px; }
@media (max-width: 899px) { .comm-grid { columns: 2; } }
/* v21.2：手机上也保留两列瀑布流，只缩间距与字号 */
@media (max-width: 559px) {
  .comm-grid { columns: 2; column-gap: 10px; }
  .comm-card { margin: 0 0 14px; }
  .comm-card .cap span { font-size: 10.5px; }
  .comm-card .cap em { font-size: 9px; }
  .comm-card .go { width: 22px; height: 22px; right: 7px; bottom: 7px; }
}
.comm-card {
  break-inside: avoid; margin: 0 0 22px; cursor: zoom-in;
  border-radius: var(--r-md); overflow: hidden;
}
.comm-card .ph { position: relative; border-radius: var(--r-md); overflow: hidden; background: var(--paper); }
.comm-card img, .comm-card video { display: block; width: 100%; height: auto; transition: transform .4s var(--ease); }
.comm-card:hover img { transform: scale(1.02); }
.comm-card .go {
  position: absolute; right: 10px; bottom: 10px;
  width: 28px; height: 28px; border-radius: 50%;
  background: rgba(255,255,255,.92); color: var(--ink);
  display: grid; place-items: center;
}
.comm-card .cap {
  display: flex; justify-content: space-between; align-items: baseline; gap: 10px;
  padding: 9px 4px 0;
}
.comm-card .cap span { font-size: 12px; font-weight: 700; color: var(--ink); }
.comm-card .cap em { font-style: normal; font-size: 10.5px; letter-spacing: .12em; color: var(--mut); }

/* ------------------------------------------------ help 条 */
.help { padding: 40px 0 70px; }
.help-card {
  background: var(--paper); border-radius: var(--r-lg);
  padding: 34px clamp(22px, 4vw, 50px);
  display: grid; grid-template-columns: 1fr 1fr; gap: 30px;
}
@media (max-width: 719px) { .help-card { grid-template-columns: 1fr; } }
.help-item .q { font-size: 21px; font-weight: 900; margin-bottom: 10px; }

/* ------------------------------------------------ footer */
.footer { background: var(--ink); color: #fff; padding: 54px 0 30px; }
.footer .big { font-size: clamp(22px, 3vw, 34px); font-weight: 900; margin-bottom: 26px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 26px; padding-bottom: 26px; border-bottom: 1px solid rgba(255,255,255,.16); }
.footer-links a { color: rgba(255,255,255,.85); font-size: 13px; font-weight: 700; }
.footer-links a:hover { color: #fff; }
.footer-bot { display: flex; flex-wrap: wrap; gap: 8px 22px; justify-content: space-between; color: rgba(255,255,255,.45); font-size: 11.5px; padding-top: 18px; }

/* ------------------------------------------------ 二级页通用 */
.page { min-height: 60vh; padding: 30px 0 80px; }
.crumbs { font-size: 12px; color: var(--mut); margin: 18px 0 40px; }
.crumbs a:hover { color: var(--ink); }

/* guide：搜索 + 左目录 + 手风琴 */
.guide-search {
  margin-top: 30px; position: relative; max-width: 460px;
}
.guide-search input {
  width: 100%; font: inherit; font-size: 13.5px;
  border: 1.5px solid var(--line); border-radius: 12px;
  padding: 12px 44px 12px 16px; background: #fff; color: var(--ink);
}
.guide-search .gs-ic {
  position: absolute; right: 14px; top: 50%; transform: translateY(-50%);
  font-size: 18px; color: var(--mut);
}
.guide-layout { display: grid; grid-template-columns: 200px minmax(0,1fr); gap: 48px; margin-top: 34px; }
@media (max-width: 899px) { .guide-layout { grid-template-columns: 1fr; gap: 20px; } }
.guide-toc { position: sticky; top: 96px; align-self: start; display: flex; flex-direction: column; gap: 4px; }
@media (max-width: 899px) { .guide-toc { position: static; flex-direction: row; flex-wrap: wrap; } }
.guide-toc-item {
  font-size: 13px; font-weight: 800; color: var(--ink-2);
  padding: 6px 0; transition: color .15s;
}
.guide-toc-item i { font-style: normal; font-size: 11px; }
.guide-toc-item:hover { color: var(--pink-deep); }
.guide-cat { margin-bottom: 34px; }
.guide-cat .gk { font-size: 11px; font-weight: 900; letter-spacing: .12em; color: var(--pink-deep); margin-bottom: 6px; }
.gfaq { border-bottom: 1px solid var(--line); }
.gfaq summary {
  list-style: none; cursor: pointer;
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
  padding: 17px 2px; font-size: 15px; font-weight: 800; color: var(--ink);
}
.gfaq summary::-webkit-details-marker { display: none; }
.gfaq .pm { position: relative; width: 14px; height: 14px; flex: none; }
.gfaq .pm::before, .gfaq .pm::after {
  content: ''; position: absolute; background: var(--ink); transition: transform .2s;
}
.gfaq .pm::before { left: 0; top: 6px; width: 14px; height: 2px; }
.gfaq .pm::after { left: 6px; top: 0; width: 2px; height: 14px; }
.gfaq[open] .pm::after { transform: scaleY(0); }
.gfaq .ga { padding: 0 2px 18px; font-size: 13.5px; line-height: 1.75; color: var(--ink-2); max-width: 70ch; }
.guide-contact { margin-top: 26px; background: var(--blush); border-radius: var(--r-md); padding: 24px 26px; display: flex; justify-content: space-between; align-items: center; gap: 18px; flex-wrap: wrap; }

/* tech */
.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin: 34px 0 10px; }
@media (max-width: 899px) { .stat-grid { grid-template-columns: repeat(2, 1fr); } }
.stat { border-top: 3px solid var(--ink); padding-top: 16px; }
.stat .num { font-size: clamp(30px, 3.6vw, 44px); font-weight: 900; line-height: 1; }
.stat .num small { font-size: .45em; font-weight: 900; }
.stat .t { font-weight: 900; font-size: 14.5px; margin-top: 10px; }
.stat .d { font-size: 12px; color: var(--mut); margin-top: 2px; }
.stat-note { font-size: 11px; color: var(--mut); border-top: 1px solid var(--line); padding-top: 12px; margin-top: 22px; }
.ratchet { margin-top: 64px; display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1fr); gap: 40px; align-items: center; }
@media (max-width: 899px) { .ratchet { grid-template-columns: 1fr; } }
.ratchet-img { background: var(--blush); border-radius: var(--r-lg); min-height: 300px; display: grid; place-items: center; }
.ratchet-img img { max-width: 78%; max-height: 320px; object-fit: contain; }
.formula {
  margin-top: 64px; background: var(--blush); color: var(--ink);
  border-radius: var(--r-lg); padding: clamp(28px, 4vw, 54px);
  text-align: center;
}
.formula .f-kicker { font-size: 11px; font-weight: 900; letter-spacing: .2em; color: var(--pink-deep); margin-bottom: 26px; }
.formula .f-row { display: grid; grid-template-columns: 1fr auto 1fr auto 1.2fr; gap: 16px; align-items: center; }
@media (max-width: 899px) { .formula .f-row { grid-template-columns: 1fr; } .formula .op { transform: rotate(90deg); } }
.formula .fbox { background: #fff; border-radius: var(--r-md); padding: 26px 16px; font-weight: 800; font-size: 13.5px; }
.formula .fbox.res { background: var(--ink); color: #fff; }
.formula .op { font-size: 30px; font-weight: 300; color: var(--ink); }
.tp-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
@media (max-width: 899px) { .tp-grid { grid-template-columns: 1fr; } }
.tech-part { border-top: 2px solid var(--ink); padding: 18px 2px 0; }
.tech-part .k { font-size: 10.5px; font-weight: 900; letter-spacing: .18em; color: var(--pink-deep); }
.tech-part .nm { font-size: 17px; font-weight: 800; margin: 8px 0 4px; }
.tech-part .d { font-size: 13px; color: var(--ink-2); }
.grip-row { margin-top: 72px; display: grid; }
.grip-copy { max-width: 520px; margin-left: auto; text-align: left; }
.designed {
  margin-top: 72px; background: var(--paper); border-radius: var(--r-lg);
  padding: clamp(26px, 4vw, 50px);
  display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1fr); gap: 44px; align-items: center;
}
@media (max-width: 899px) { .designed { grid-template-columns: 1fr; } }
.designed-rows { display: flex; flex-direction: column; }
.designed-rows .dr {
  display: flex; justify-content: space-between; gap: 18px;
  padding: 13px 2px; border-bottom: 1px solid var(--line); font-size: 13.5px;
}
.designed-rows .dr span { color: var(--mut); }
.designed-rows .dr b { font-weight: 800; text-align: right; }
.tech-outro {
  margin-top: 56px; display: flex; justify-content: space-between; align-items: center; gap: 18px;
  flex-wrap: wrap; padding-bottom: 10px;
}
.tech-outro span { font-size: clamp(20px, 2.6vw, 28px); font-weight: 800; letter-spacing: -.01em; }

/* business（商务合作）· 目录式三行 + 展开详情 */
.biz-dir { margin-top: 34px; }
.biz-row { border-top: 2px solid var(--ink); cursor: pointer; }
.biz-row:last-child { border-bottom: 2px solid var(--ink); }
.biz-line {
  display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1fr) auto;
  gap: 20px; align-items: center; padding: 26px 4px;
  transition: background .15s;
}
.biz-row:hover .biz-line { background: var(--paper); }
.biz-row .bk { font-size: 10.5px; font-weight: 900; letter-spacing: .2em; color: var(--mut); }
.biz-row .bn { font-size: clamp(22px, 2.8vw, 32px); font-weight: 800; letter-spacing: -.01em; margin-top: 4px; }
.biz-row .bd { font-size: 13.5px; color: var(--ink-2); }
.biz-row .arr-circle {
  width: 38px; height: 38px; border-radius: 50%; border: 1.5px solid var(--ink);
  display: grid; place-items: center; transition: transform .2s var(--ease), background .2s, color .2s;
}
.biz-row:hover .arr-circle { background: var(--ink); color: #fff; transform: rotate(45deg); }
.biz-row.open .arr-circle { transform: rotate(90deg); }
.biz-detail { display: none; padding: 0 4px 26px; }
.biz-row.open .biz-detail { display: block; }
.biz-detail p { font-size: 14px; color: var(--ink-2); max-width: 62ch; margin-bottom: 12px; }
.biz-form-sec { margin-top: 64px; }
.biz-grid { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1fr); gap: 40px; margin-top: 20px; }
@media (max-width: 899px) { .biz-grid { grid-template-columns: 1fr; } }
.biz-form { background: var(--paper); border-radius: var(--r-lg); padding: 26px; display: flex; flex-direction: column; gap: 14px; }
.biz-form label { font-size: 12.5px; font-weight: 800; display: block; margin-bottom: 5px; }
.biz-form label i { color: var(--pink-deep); font-style: normal; }
.biz-form input, .biz-form select, .biz-form textarea {
  width: 100%; font: inherit; font-size: 14px;
  border: 1.5px solid var(--line); border-radius: 10px;
  padding: 10px 12px; background: #fff; color: var(--ink);
}
.biz-form textarea { min-height: 110px; resize: vertical; }
.biz-info .mail { font-size: clamp(20px, 2.6vw, 28px); font-weight: 900; border-bottom: 3px solid var(--pink); display: inline-block; padding-bottom: 4px; }
.biz-info p { color: var(--ink-2); font-size: 14.5px; margin-top: 14px; }

/* ------------------------------------------------ lightbox */
.lb {
  position: fixed; inset: 0; z-index: 200;
  background: rgba(12,12,12,.92);
  display: none; align-items: center; justify-content: center;
}
.lb.open { display: flex; }
.lb-body { max-width: min(1000px, 92vw); max-height: 88vh; text-align: center; }
.lb-img { max-width: 100%; max-height: 80vh; border-radius: 10px; }
.lb-vid { display: none; max-width: 100%; max-height: 80vh; border-radius: 10px; }
.lb-cap { color: rgba(255,255,255,.85); font-size: 13px; margin-top: 12px; }
.lb-cap small { display: block; color: rgba(255,255,255,.5); font-size: 11px; margin-top: 2px; }
.lb-close {
  position: absolute; top: 18px; right: 18px;
  width: 40px; height: 40px; border-radius: 50%;
  border: 1.5px solid rgba(255,255,255,.4); background: none; color: #fff;
  display: grid; place-items: center;
}
.lb-nav {
  position: absolute; top: 50%; transform: translateY(-50%);
  width: 44px; height: 44px; border-radius: 50%;
  border: 1.5px solid rgba(255,255,255,.4); background: none; color: #fff;
  display: none; place-items: center;
}
.lb.multi .lb-nav { display: grid; }
.lb-nav.prev { left: 16px; }
.lb-nav.next { right: 16px; }
.lb-count { position: absolute; top: 24px; left: 50%; transform: translateX(-50%); color: rgba(255,255,255,.7); font-size: 12px; letter-spacing: .1em; display: none; }
.lb.multi .lb-count { display: block; }

/* play 徽章 */
.play-badge {
  position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%);
  width: 52px; height: 52px; border-radius: 50%;
  background: var(--pink); color: var(--ink);
  display: grid; place-items: center;
}
.play-badge svg { width: 20px; height: 20px; margin-left: 3px; }

/* toast */
.toast {
  position: fixed; left: 50%; bottom: 28px; transform: translateX(-50%);
  background: var(--ink); color: #fff; font-size: 13px; font-weight: 700;
  padding: 10px 18px; border-radius: 999px; z-index: 300;
  opacity: 1; transition: opacity .3s;
}
.toast.hidden { opacity: 0; pointer-events: none; }
.toast.err { background: #c0392b; }
.toast.ok { background: #1d7a46; }

/* ==========================================================================
   v21.2 追加：组合条「更多可能」+ 商务合作子页 + 手机端微调
   ========================================================================== */
/* 组合条条目：可点击看更多玩法 */
.combo-item { cursor: pointer; position: relative; }
.combo-item .im { transition: transform .25s var(--ease); }
.combo-item:hover .im { transform: translateY(-4px) scale(1.04); }
.combo-more {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: 10.5px; font-weight: 800; color: var(--pink-deep);
  background: #fff; border-radius: 999px; padding: 3px 10px;
  box-shadow: 0 1px 4px rgba(17,17,17,.08);
}

/* 商务合作子页（demo 同构：面包屑 + 三列黑顶线 + 链接 + 底部 CTA） */
.biz-cols {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px;
  margin-top: 44px;
}
@media (max-width: 899px) { .biz-cols { grid-template-columns: 1fr; gap: 20px; } }
.biz-col { border-top: 2px solid var(--ink); padding-top: 18px; }
.biz-col .t { font-size: 19px; font-weight: 900; letter-spacing: -.02em; margin-bottom: 10px; }
.biz-col .d { font-size: 13.5px; color: var(--ink-2); line-height: 1.85; }
.biz-links { display: flex; gap: 28px; margin-top: 38px; flex-wrap: wrap; }
.biz-cta-row {
  border-top: 1px solid var(--line);
  margin-top: 52px; padding: 36px 0 8px;
  display: flex; justify-content: space-between; align-items: center; gap: 20px; flex-wrap: wrap;
}
.biz-cta-row .q { font-size: clamp(20px, 2.6vw, 28px); font-weight: 900; letter-spacing: -.02em; margin-bottom: 8px; }
.biz-cta-row .d { font-size: 13px; color: var(--mut); }
/* 配件定制页：多彩示例图集 */
.acc-gallery {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px;
  margin-top: 36px;
}
@media (max-width: 899px) { .acc-gallery { grid-template-columns: repeat(2, 1fr); } }
.acc-gallery .g {
  border-radius: var(--r-md); overflow: hidden; cursor: zoom-in;
  background: var(--paper); aspect-ratio: 1 / 1; position: relative;
}
.acc-gallery .g img, .acc-gallery .g video { width: 100%; height: 100%; object-fit: cover; transition: transform .4s var(--ease); }
.acc-gallery .g:hover img { transform: scale(1.05); }
.acc-gallery .g .cap {
  position: absolute; left: 10px; bottom: 10px;
  background: rgba(255,255,255,.92); color: var(--ink);
  font-size: 11px; font-weight: 800; padding: 4px 10px; border-radius: 999px;
}