/* 闪耀之声 · 全能口才 演示版课程系统
   风格跟现课程系统、口才 H5 一致：浅底 + 荧光黄绿 + 靛蓝，粗黑描边、硬投影，像贴纸。
   一级（首页）：四大板块横向手风琴，一屏放下；二级（板块页）：一屏彩色方块；三级（课程页）：样课 + 全年目录。
   手机上手风琴改竖排、方块改两列；样课在全屏播放层里打开。 */
@font-face { font-family: 'SYH'; src: url('font/syh.woff2?v=20261027l') format('woff2'); font-weight: 900; font-display: swap; }
:root {
  --lime: #dbf901; --indigo: #26249f; --ink: #141414; --paper: #f7f8f2; --red: #e8102e;
  --cyan: #2fd3f2; --orange: #ffb21f; --pink: #ff8fbd; --navy: #0e1530; --grey: #5b5f55;
  --fh: 'SYH', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --r: 18px; --bw: 3px; --sh: 5px 5px 0 var(--ink);
  --ease: cubic-bezier(.2, .8, .2, 1);
  --sec: var(--lime); --sec-ink: var(--ink);
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
body {
  margin: 0; color: var(--ink); background: var(--paper);
  font: 15px/1.65 -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  -webkit-font-smoothing: antialiased;
}
body.lock { overflow: hidden; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; background: none; border: 0; padding: 0; }
button, a { -webkit-tap-highlight-color: transparent; touch-action: manipulation; }
a:focus-visible, button:focus-visible { outline: 3px solid var(--indigo); outline-offset: 3px; border-radius: 8px; }
h1, h2, h3, h4, p, ul, ol { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img { display: block; max-width: 100%; }
[hidden] { display: none !important; }

.bg { position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background: radial-gradient(ellipse 60% 40% at 0 0, rgba(219, 249, 1, .32), transparent 70%), radial-gradient(ellipse 60% 45% at 100% 100%, rgba(47, 211, 242, .18), transparent 70%), var(--paper); }
.bg::after { content: ''; position: absolute; inset: 0; background-image: radial-gradient(rgba(20, 20, 20, .07) 1.1px, transparent 1.4px); background-size: 18px 18px; }

.wrap { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* 贴纸：描边 + 硬投影，按下去收回 */
.stk { background: #fff; border: var(--bw) solid var(--ink); border-radius: var(--r); box-shadow: var(--sh); }
.press { transition: transform .2s var(--ease), box-shadow .2s var(--ease); }
.press:hover { transform: translate(-1px, -2px); box-shadow: 6px 7px 0 var(--ink); }
.press:active { transform: translate(3px, 3px); box-shadow: 1px 1px 0 var(--ink); }

/* 描边大字：底下一层描边、上面一层填色，跟系统瓷片上的字一样 */
.ol { position: relative; display: inline-block; color: #fff; font-family: var(--fh); font-weight: 900; line-height: 1.1; }
.ol::before { content: attr(data-t); position: absolute; left: 0; top: 0; z-index: -1; color: var(--ink); -webkit-text-stroke: .2em var(--ink); }
.ol { z-index: 0; isolation: isolate; text-shadow: 0 .09em 0 var(--ink); }
.ol::before { text-shadow: .05em .14em 0 var(--ink); }

/* ---------- 动效：换页淡入上移，方块依次弹出 ---------- */
@keyframes pageIn { from { opacity: 0; transform: translateY(14px); } }
@keyframes tileIn { from { opacity: 0; transform: translateY(24px) scale(.95); } }
@keyframes float { to { transform: translateY(-10px) rotate(-2deg); } }
@keyframes marq { to { transform: translateX(-50%); } }
@keyframes pulse { 50% { box-shadow: 0 0 0 7px rgba(219, 249, 1, .35); } }
@keyframes fadeIn { from { opacity: 0; } }
.page { animation: pageIn .55s var(--ease) backwards; }
.l1.page, .l2.page { animation-name: fadeIn; animation-duration: .4s; }

/* ---------- 通用 ---------- */
.h2 { display: flex; align-items: baseline; flex-wrap: wrap; gap: 6px 14px; margin: 44px 0 18px; }
.h2 h2 { font-family: var(--fh); font-size: 26px; line-height: 1.2; position: relative; padding-left: 16px; }
.h2 h2::before { content: ''; position: absolute; left: 0; top: .12em; bottom: .12em; width: 7px; border-radius: 4px; background: var(--sec); border: 2px solid var(--ink); }
.h2 p { font-size: 14px; color: var(--grey); }
.chip { display: inline-flex; align-items: center; height: 26px; padding: 0 11px; border-radius: 13px; border: 2px solid var(--ink); background: #fff; font-size: 13px; font-weight: 700; white-space: nowrap; }
.chip.dark { background: var(--ink); color: #fff; }
.chip.sec { background: var(--sec); color: var(--sec-ink); }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; height: 46px; padding: 0 22px; border-radius: 23px; border: var(--bw) solid var(--ink); background: #fff; color: var(--ink); font-weight: 800; font-size: 16px; box-shadow: 3px 3px 0 var(--ink); white-space: nowrap; }
.btn.play { background: var(--lime); }
.btn.dark { background: var(--ink); color: #fff; }
.btn svg { width: 18px; height: 18px; }
.btn > svg { transition: transform .3s var(--ease); }
.btn:hover > svg { transform: translateX(3px); }
.ico-play { display: inline-flex; width: 22px; height: 22px; border-radius: 50%; background: var(--ink); color: var(--lime); align-items: center; justify-content: center; flex-shrink: 0; }
.ico-play svg { width: 10px; height: 10px; margin-left: 2px; }
.bigplay { position: absolute; left: 50%; top: 50%; width: 76px; height: 76px; margin: -38px 0 0 -38px; border-radius: 50%; background: var(--lime); border: 4px solid var(--ink); box-shadow: 4px 4px 0 var(--ink); display: flex; align-items: center; justify-content: center; transition: transform .25s var(--ease); }
.bigplay svg { width: 26px; height: 26px; margin-left: 5px; }
.cv:hover .bigplay { transform: scale(1.08); }

/* ---------- 顶栏 ---------- */
.bar { position: relative; z-index: 30; flex-shrink: 0; }
.bar.solid { position: sticky; top: 0; background: rgba(247, 248, 242, .88); -webkit-backdrop-filter: blur(14px) saturate(1.4); backdrop-filter: blur(14px) saturate(1.4); border-bottom: var(--bw) solid var(--ink); }
.bar-in { display: flex; align-items: center; gap: 14px; height: 68px; width: 100%; max-width: 1440px; margin: 0 auto; padding: 0 24px; }
.bar.solid .bar-in { max-width: 1200px; }
.brand { display: flex; align-items: center; gap: 14px; flex-shrink: 0; }
.brand img { width: 98px; height: auto; }
.brand .sys { display: flex; flex-direction: column; line-height: 1.2; padding-left: 14px; border-left: 2px solid var(--ink); }
.brand .sys b { font-family: var(--fh); font-weight: 900; font-size: 16px; }
.brand .sys i { font-style: normal; font-size: 12px; color: var(--grey); }
.brand.sm { gap: 10px; }
.brand.sm img { width: 82px; }
.brand.sm .sys { padding-left: 10px; }
.brand.sm .sys b { display: none; }
.demo-badge { display: inline-flex; align-items: center; gap: 5px; height: 24px; padding: 0 10px; border-radius: 12px; background: var(--indigo); color: var(--lime); font-size: 12px; font-weight: 700; letter-spacing: 1px; white-space: nowrap; }
.demo-badge::before { content: ''; width: 7px; height: 7px; border-radius: 50%; background: var(--lime); box-shadow: 0 0 0 3px rgba(219, 249, 1, .3); }
.bar-hint { margin-left: auto; display: inline-flex; align-items: center; gap: 10px; font-size: 13px; font-weight: 700; color: var(--grey); letter-spacing: .5px; white-space: nowrap; }
.bar-hint i { width: 9px; height: 9px; border-radius: 50%; background: var(--ink); box-shadow: 0 0 0 4px rgba(219, 249, 1, .9); animation: pulse 1.8s ease-in-out infinite; }
.back { display: inline-flex; align-items: center; gap: 8px; height: 42px; padding: 0 16px 0 5px; border-radius: 21px; border: 2.5px solid var(--ink); background: #fff; box-shadow: 3px 3px 0 var(--ink); font-weight: 800; font-size: 14.5px; white-space: nowrap; flex-shrink: 0; transition: transform .2s var(--ease), box-shadow .2s var(--ease); }
.back svg { width: 30px; height: 30px; padding: 6px; border-radius: 50%; background: var(--ink); color: var(--lime); transform: rotate(180deg); transition: transform .3s var(--ease); }
.back:hover { transform: translate(-1px, -2px); box-shadow: 4px 5px 0 var(--ink); }
.back:hover svg { transform: rotate(180deg) translateX(3px); }
.back:active { transform: translate(2px, 2px); box-shadow: 1px 1px 0 var(--ink); }
.back span { max-width: 12em; overflow: hidden; text-overflow: ellipsis; }
.sw { margin-left: auto; display: flex; gap: 4px; padding: 4px; border-radius: 26px; background: #fff; border: 2.5px solid var(--ink); box-shadow: 3px 3px 0 var(--ink); }
.sw a { height: 34px; padding: 0 14px 0 10px; display: inline-flex; align-items: center; gap: 7px; border-radius: 17px; font-weight: 800; font-size: 13.5px; white-space: nowrap; transition: background .25s, color .25s; }
.sw a i { width: 12px; height: 12px; border-radius: 50%; background: var(--c); border: 2px solid var(--ink); flex-shrink: 0; }
.sw a:hover { background: #eef0e6; }
.sw a.on { background: var(--c); color: var(--k); }
.sw a.on i { background: #fff; }
.bar-tt { flex: 1; min-width: 0; font-family: var(--fh); font-size: 18px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.bar.solid .brand { margin-left: auto; }

/* ---------- 一级：四大板块手风琴 ---------- */
.l1, .l2 { display: flex; flex-direction: column; min-height: 100vh; min-height: 100svh; overflow: hidden; overflow: clip; }
/* 电脑上一、二级固定一屏高，方块按屏幕高度平分；屏幕太矮就退回能往下翻 */
@media (min-width: 901px) and (min-height: 620px) {
  .l1, .l2 { height: 100vh; height: 100svh; }
  .acc { min-height: 0; }
}
.l1-in { flex: 1; display: flex; flex-direction: column; width: 100%; max-width: 1440px; margin: 0 auto; padding: 0 24px 22px; min-height: 0; }
.l1-head { display: flex; align-items: flex-end; justify-content: space-between; flex-wrap: wrap; gap: 12px 28px; padding: 0 0 18px; }
.kick { display: block; font-size: 12px; font-weight: 800; letter-spacing: 3px; color: var(--grey); margin-bottom: 4px; }
.l1-head h1 { font-family: var(--fh); font-size: clamp(28px, 2.8vw, 38px); line-height: 1.15; letter-spacing: 1px; }
.l1-head h1 em { font-style: normal; background: linear-gradient(transparent 58%, var(--lime) 58%, var(--lime) 92%, transparent 92%); }
.l1-stats { display: flex; border: 2.5px solid var(--ink); border-radius: 16px; background: #fff; box-shadow: 3px 3px 0 var(--ink); overflow: hidden; }
.l1-stats span { display: flex; align-items: baseline; gap: 5px; padding: 7px 16px; font-size: 12.5px; font-weight: 700; color: var(--grey); white-space: nowrap; }
.l1-stats span + span { border-left: 2px dashed rgba(20, 20, 20, .18); }
.l1-stats b { font-family: var(--fh); font-size: 22px; color: var(--ink); }

.acc { --ew: calc((min(100vw, 1440px) - 48px - 42px) * 4.6 / 7.6 - 6px); flex: 1; min-height: 440px; display: flex; gap: 14px; }
.pn { position: relative; flex: 1 1 0; min-width: 0; border-radius: 28px; border: var(--bw) solid var(--ink); box-shadow: 6px 6px 0 var(--ink); background: var(--c); color: var(--k); overflow: hidden; isolation: isolate; cursor: pointer;
  transition: flex-grow .75s cubic-bezier(.22, .9, .24, 1), transform .3s var(--ease), box-shadow .3s var(--ease);
  animation: tileIn .7s var(--ease) backwards; animation-delay: calc(var(--i) * 70ms + 80ms); }
.pn.on { flex-grow: 4.6; cursor: default; }
.pn::before { content: ''; position: absolute; inset: 0; z-index: -1; opacity: .13; background-image: var(--pat); background-size: 64px 64px; }
.pn::after { content: ''; position: absolute; inset: 0; z-index: -1; pointer-events: none; background: linear-gradient(160deg, rgba(255, 255, 255, .42), transparent 42%); }
.pn.dark::after { background: linear-gradient(160deg, rgba(255, 255, 255, .16), transparent 42%); }
.pn:not(.on):hover { transform: translateY(-5px); box-shadow: 6px 11px 0 var(--ink); }

/* 收起时：竖排板块名 */
.pn-head { position: absolute; inset: 0; z-index: 3; width: 100%; display: flex; flex-direction: column; align-items: center; gap: 16px; padding: 26px 8px 24px; text-align: center; color: inherit; transition: opacity .35s var(--ease) .1s, visibility 0s; }
.pn.on .pn-head { opacity: 0; visibility: hidden; transition: opacity .15s, visibility 0s .15s; }
.pn-no { font-family: var(--fh); font-size: 17px; line-height: 1; padding: 6px 10px; border-radius: 11px; background: var(--ink); color: #fff; }
.dark .pn-no { background: #fff; color: var(--ink); }
.pn-v { writing-mode: vertical-rl; text-orientation: upright; font-family: var(--fh); font-weight: 900; font-size: 32px; letter-spacing: 7px; line-height: 1; }
.pn-en { writing-mode: vertical-rl; font-size: 11px; font-weight: 800; letter-spacing: 3px; opacity: .55; white-space: nowrap; }
.pn-n { margin-top: auto; font-size: 12.5px; font-weight: 800; opacity: .8; white-space: nowrap; }
.pn-ic { flex-shrink: 0; width: 48px; height: 48px; border-radius: 50%; border: 2.5px solid var(--ink); background: #fff; color: var(--ink); display: flex; align-items: center; justify-content: center; box-shadow: 2px 2px 0 var(--ink); transition: transform .4s var(--ease), background .25s; }
.pn-ic svg { width: 20px; height: 20px; }
.pn-ic .ia { display: none; }
.pn:hover .pn-ic { transform: rotate(90deg); background: var(--lime); }

/* 展开后：板块介绍 + 舞台上的角色 */
.pn-bw { position: absolute; inset: 0; opacity: 0; visibility: hidden; transition: opacity .25s, visibility 0s .25s; }
.pn.on .pn-bw { opacity: 1; visibility: visible; transition: opacity .45s .18s, visibility 0s; }
.pn-body { position: absolute; left: 0; top: 0; bottom: 0; width: var(--ew); }
.pn-in { position: relative; height: 100%; display: flex; flex-direction: column; align-items: flex-start; padding: 30px 36px 32px; }
.pn-in > :not(.pn-deco) { position: relative; z-index: 2; opacity: 0; transform: translateY(16px); transition: opacity .3s, transform .3s; }
.pn.on .pn-in > :not(.pn-deco) { opacity: 1; transform: none; transition: opacity .55s var(--ease), transform .7s var(--ease); }
.pn.on .pn-k { transition-delay: .16s; }
.pn.on .pn-t { transition-delay: .21s; }
.pn.on .pn-lead { transition-delay: .26s; }
.pn.on .pn-subs { transition-delay: .31s; }
.pn.on .pn-nums { transition-delay: .36s; }
.pn.on .pn-acts { transition-delay: .41s; }
.pn-k { display: flex; align-items: center; gap: 12px; font-size: 12px; font-weight: 800; letter-spacing: 2.5px; }
.pn-k .chip { letter-spacing: .5px; }
.dark .pn-k .chip.dark { background: #fff; color: var(--ink); }
.pn-t { font-size: clamp(46px, 4.4vw, 64px); margin: 12px 0 14px; letter-spacing: 1px; }
.pn-lead { max-width: 54%; font-size: 16px; line-height: 1.7; font-weight: 600; opacity: .88; }
.pn-subs { display: flex; flex-wrap: wrap; gap: 7px; max-width: 56%; margin-top: 18px; }
.pn-subs a { font-size: 13px; font-weight: 800; padding: 3px 12px; border-radius: 14px; background: rgba(255, 255, 255, .88); color: var(--ink); border: 2px solid var(--ink); transition: background .2s, color .2s, transform .2s var(--ease); }
.pn-subs a:hover { background: var(--ink); color: #fff; transform: translateY(-2px); }
.pn-nums { display: flex; margin-top: 20px; }
.pn-nums span { display: flex; flex-direction: column; padding: 0 20px; font-size: 12px; font-weight: 700; line-height: 1.3; border-left: 2px solid rgba(20, 20, 20, .25); }
.dark .pn-nums span { border-color: rgba(255, 255, 255, .3); }
.pn-nums span:first-child { padding-left: 0; border-left: 0; }
.pn-nums b { font-family: var(--fh); font-size: 30px; line-height: 1.15; }
.pn-acts { margin-top: auto; padding-top: 18px; display: flex; flex-wrap: wrap; gap: 12px; }
.dark .pn-acts .btn.dark { background: #fff; color: var(--ink); }
.pn-deco { position: absolute; top: 0; right: 0; bottom: 0; width: 46%; z-index: 1; pointer-events: none; opacity: 0; transform: translateX(40px); transition: opacity .3s, transform .4s; }
.pn.on .pn-deco { opacity: 1; transform: none; transition: opacity .6s .22s, transform .9s var(--ease) .22s; }
.pn-wm { position: absolute; right: 26px; top: 14px; font-family: var(--fh); font-size: 150px; line-height: 1; color: transparent; -webkit-text-stroke: 2.5px rgba(20, 20, 20, .2); letter-spacing: -4px; }
.dark .pn-wm { -webkit-text-stroke-color: rgba(255, 255, 255, .25); }
.pn-spot { position: absolute; right: 4%; width: 76%; top: -4%; bottom: 13%; background: linear-gradient(to bottom, rgba(255, 255, 255, 0), rgba(255, 255, 255, .5)); clip-path: polygon(40% 0, 60% 0, 100% 100%, 0 100%); }
.dark .pn-spot { background: linear-gradient(to bottom, rgba(255, 255, 255, 0), rgba(255, 255, 255, .2)); }
.pn-stage { position: absolute; right: 4%; width: 76%; bottom: 5%; height: 16%; border-radius: 50%; background: rgba(255, 255, 255, .7); border: var(--bw) solid var(--ink); box-shadow: 0 7px 0 var(--ink); }
.dark .pn-stage { background: rgba(255, 255, 255, .16); }
.pn-actor { position: absolute; right: 4%; width: 76%; bottom: 12%; height: 60%; display: flex; align-items: flex-end; justify-content: center; }
.pn-actor img { width: auto; height: auto; max-width: 100%; max-height: 100%; filter: drop-shadow(5px 7px 0 rgba(20, 20, 20, .9)); animation: float 4.5s ease-in-out infinite alternate; }

/* 底部滚动的全部课程名 */
.marq { flex-shrink: 0; display: flex; align-items: center; height: 46px; overflow: hidden; background: var(--ink); color: #fff; -webkit-mask-image: linear-gradient(90deg, transparent, #000 5%, #000 95%, transparent); mask-image: linear-gradient(90deg, transparent, #000 5%, #000 95%, transparent); }
.marq-in { display: flex; width: max-content; animation: marq 80s linear infinite; }
.marq-in .dup { display: flex; }
.marq:hover .marq-in { animation-play-state: paused; }
.marq a { display: inline-flex; align-items: center; gap: 10px; padding: 0 20px; font-family: var(--fh); font-size: 15px; letter-spacing: 1px; white-space: nowrap; transition: color .2s; }
.marq a:hover { color: var(--lime); }
.marq a i { width: 10px; height: 10px; border-radius: 50%; border: 2px solid #fff; }
.marq a::after { content: '\2726'; margin-left: 20px; color: var(--lime); font-family: sans-serif; font-size: 12px; }

/* ---------- 二级：一屏彩色方块 ---------- */
.bento { flex: 1; width: 100%; max-width: 1440px; margin: 0 auto; padding: 2px 24px 24px; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; grid-auto-flow: dense; }
.bento.r2 { grid-template-rows: repeat(2, minmax(250px, 1fr)); }
.bento.r3 { grid-template-rows: repeat(3, minmax(190px, 1fr)); }

.bt-title { grid-column: span 2; position: relative; display: flex; flex-direction: column; align-items: flex-start; min-width: 0; padding: 22px 28px 24px; border-radius: 24px; border: var(--bw) solid var(--ink); box-shadow: 5px 5px 0 var(--ink); background: var(--ink); color: #fff; overflow: hidden; isolation: isolate;
  animation: tileIn .65s var(--ease) backwards; animation-delay: 60ms; }
.tall .bt-title { grid-row: span 2; padding: 30px 34px 32px; }
.bt-title::after { content: ''; position: absolute; inset: 0; z-index: -2; background-image: radial-gradient(rgba(255, 255, 255, .09) 1.2px, transparent 1.5px); background-size: 18px 18px; }
.tt-glow { position: absolute; z-index: -1; right: -18%; bottom: -45%; width: 75%; aspect-ratio: 1; border-radius: 50%; background: var(--ac); opacity: .28; filter: blur(60px); }
.tt-art { position: absolute; z-index: -1; right: 22px; bottom: 18px; width: auto; height: auto; max-width: 40%; max-height: 72%; filter: drop-shadow(4px 6px 0 rgba(0, 0, 0, .55)); animation: float 4.5s ease-in-out infinite alternate; }
.r3 .tt-art { max-height: 108%; bottom: -14%; right: 14px; }
.tt-k { display: flex; align-items: center; gap: 10px; font-size: 12px; font-weight: 800; letter-spacing: 2.5px; color: var(--ac); }
.tt-k span { color: #fff; border: 1.5px solid rgba(255, 255, 255, .4); padding: 1px 9px; border-radius: 10px; letter-spacing: 1px; font-size: 11.5px; }
.bt-title h1 { font-family: var(--fh); font-size: 50px; line-height: 1.1; margin-top: 8px; letter-spacing: 1px; }
.tall .bt-title h1 { font-size: 62px; margin-top: 12px; }
.tt-lead { max-width: 27em; margin-top: 16px; font-size: 15px; line-height: 1.8; color: rgba(255, 255, 255, .78); }
.r3 .tt-lead { display: none; }
.r3.bento .bt-title { padding: 18px 26px 20px; }
.r3 .bt-title h1 { font-size: 44px; margin-top: 6px; }
.r3 .tt-stats { margin-top: 10px; }
.r3 .tt-stats b { font-size: 24px; }
.r3 .bt-title .btn { height: 42px; }
.tt-stats { display: flex; margin-top: 14px; }
.tall .tt-stats { margin-top: 24px; }
.tt-stats span { display: flex; flex-direction: column; padding: 0 18px; font-size: 12px; font-weight: 700; line-height: 1.3; color: rgba(255, 255, 255, .62); border-left: 1.5px solid rgba(255, 255, 255, .22); }
.tt-stats span:first-child { padding-left: 0; border-left: 0; }
.tt-stats b { font-family: var(--fh); font-size: 28px; line-height: 1.15; color: var(--ac); }
.tall .tt-stats b { font-size: 34px; }
.tall .tt-art { max-width: 34%; }
.tt-cvw { flex: 1 1 0; min-height: 0; max-height: 200px; max-width: 64%; margin: 22px 0 18px; display: flex; }
.tt-cv { position: relative; display: block; height: 100%; max-width: 100%; aspect-ratio: 16 / 9; border-radius: 16px; border: var(--bw) solid #fff; box-shadow: 5px 5px 0 var(--ac); overflow: hidden; background: var(--navy); transition: transform .3s var(--ease), box-shadow .3s var(--ease); }
.tt-cv img { width: 100%; height: 100%; object-fit: cover; transition: transform .7s var(--ease); }
.tt-cv:hover { transform: translate(-2px, -3px); box-shadow: 7px 8px 0 var(--ac); }
.tt-cv:hover img { transform: scale(1.05); }
.tt-cv .bigplay { width: 56px; height: 56px; margin: -28px 0 0 -28px; }
.tt-cv .bigplay svg { width: 20px; height: 20px; margin-left: 4px; }
.bt-title .btn { margin-top: auto; border-color: var(--ac); box-shadow: 3px 3px 0 rgba(255, 255, 255, .25); max-width: 60%; }
.bt-title .btn small { font-size: 13px; font-weight: 700; opacity: .7; overflow: hidden; text-overflow: ellipsis; }

.bt { position: relative; display: flex; flex-direction: column; min-width: 0; min-height: 0; padding: 18px 20px; border-radius: 24px; border: var(--bw) solid var(--ink); box-shadow: 5px 5px 0 var(--ink); background: var(--tc); color: var(--ink); overflow: hidden; isolation: isolate;
  transition: transform .35s var(--ease), box-shadow .35s var(--ease);
  animation: tileIn .65s var(--ease) backwards; animation-delay: calc(var(--i) * 55ms + 90ms); }
.bt::before { content: ''; position: absolute; inset: 0; z-index: -1; background: linear-gradient(160deg, rgba(255, 255, 255, .45), transparent 40%), repeating-linear-gradient(135deg, rgba(20, 20, 20, .045) 0 2px, transparent 2px 14px); }
.bt.w2 { grid-column: span 2; }
.bt.dk { color: #fff; }
.bt.dk::before { background: linear-gradient(160deg, rgba(255, 255, 255, .18), transparent 40%), repeating-linear-gradient(135deg, rgba(255, 255, 255, .05) 0 2px, transparent 2px 14px); }
.bt:hover { transform: translate(-3px, -5px); box-shadow: 8px 10px 0 var(--ink); }
.bt:active { transform: translate(2px, 2px); box-shadow: 2px 2px 0 var(--ink); transition-duration: .1s; }
.bt-top { position: relative; z-index: 2; display: flex; flex-direction: column; align-items: flex-start; gap: 8px; }
.bt-no .ol { font-size: 34px; }
.bt-cnt { display: inline-flex; align-items: baseline; gap: 3px; height: 28px; padding: 3px 11px 0; border-radius: 14px; background: var(--ink); color: #fff; font-size: 12.5px; font-weight: 700; white-space: nowrap; }
.bt-cnt b { font-family: var(--fh); font-size: 16px; line-height: 1.3; }
.bt.dk .bt-cnt { background: #fff; color: var(--ink); }
.bt-art { position: absolute; z-index: 1; right: 16px; top: 16px; width: 42%; aspect-ratio: 16 / 9; border-radius: 12px; border: 2.5px solid var(--ink); box-shadow: 3px 3px 0 var(--ink); overflow: hidden; background: var(--navy); transform: rotate(3deg); transition: transform .5s var(--ease); }
.bt-art img { width: 100%; height: 100%; object-fit: cover; transition: transform .7s var(--ease); }
.bt-art .has { position: absolute; left: 6px; bottom: 6px; display: inline-flex; align-items: center; gap: 4px; padding: 2px 8px 2px 3px; border-radius: 12px; background: var(--lime); color: var(--ink); border: 2px solid var(--ink); font-size: 11.5px; font-weight: 800; line-height: 1.3; }
.bt-art .has .ico-play { width: 16px; height: 16px; }
.bt-art .has .ico-play svg { width: 7px; height: 7px; margin-left: 1px; }
.bt:hover .bt-art { transform: rotate(0deg) translateY(-6px) scale(1.03); }
.bt:hover .bt-art img { transform: scale(1.07); }
.bt.w2 .bt-art { width: 40%; right: 20px; top: 18px; transform: rotate(2deg); }
.r2 .bt.w2 .bt-art { width: 46%; top: 22px; }
.r2 .bt:not(.w2) .bt-art { left: 28px; right: 28px; width: auto; top: var(--at, 100px); transform: rotate(-2deg); }
.r2 .bt:not(.w2):hover .bt-art { transform: rotate(0deg) translateY(-10px) scale(1.02); }
.bt-bot { position: relative; z-index: 2; margin-top: auto; display: flex; align-items: flex-end; gap: 12px; }
.bt-tx { flex: 1; min-width: 0; }
.bt.w2 .bt-tx { max-width: 52%; }
.bt-tx h3 { font-family: var(--fh); font-size: 23px; line-height: 1.2; text-wrap: balance; }
.bt-tx p { margin-top: 3px; font-size: 13px; font-weight: 700; opacity: .72; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.bt-tx .bt-brief { display: none; }
.r2 .bt.w2 .bt-brief { display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; white-space: normal; margin-top: 10px; font-size: 13.5px; line-height: 1.6; font-weight: 500; opacity: .82; }
.bt-pk { display: grid; grid-template-rows: 0fr; opacity: 0; transition: grid-template-rows .45s var(--ease), opacity .3s; }
.bt-pk > ol { min-height: 0; overflow: hidden; }
.bt-pk li { font-size: 13px; font-weight: 700; line-height: 1.6; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.bt-pk li:first-child { margin-top: 8px; padding-top: 7px; border-top: 2px dashed rgba(20, 20, 20, .28); }
.bt.dk .bt-pk li:first-child { border-top-color: rgba(255, 255, 255, .35); }
.bt-pk li i { font-style: normal; font-family: var(--fh); font-size: 11px; opacity: .55; margin-right: 6px; }
.bt:not(.w2) .bt-pk li:nth-child(3), .r3 .bt-pk li:nth-child(3) { display: none; }
@media (hover: hover) { .bt:hover .bt-pk { grid-template-rows: 1fr; opacity: 1; } }
.bt-go { flex-shrink: 0; margin-left: auto; width: 46px; height: 46px; border-radius: 50%; border: 2.5px solid var(--ink); background: #fff; color: var(--ink); display: flex; align-items: center; justify-content: center; box-shadow: 2px 2px 0 var(--ink); transition: transform .4s var(--ease), background .25s, color .25s; }
.bt-go svg { width: 20px; height: 20px; }
.bt:hover .bt-go { background: var(--ink); color: var(--lime); transform: rotate(-45deg); }

/* ---------- 三级：课程页 ---------- */
.l3 .wrap { padding-top: 26px; }
.chead { display: flex; flex-wrap: wrap; align-items: flex-end; gap: 10px 18px; }
.chead h1 { font-family: var(--fh); font-size: 42px; line-height: 1.15; }
.chead h1 small { font-size: 22px; margin-left: 10px; color: var(--grey); }
.chead .tags { display: flex; flex-wrap: wrap; gap: 8px; padding-bottom: 6px; }
.ctop { display: grid; grid-template-columns: 1fr 400px; gap: 28px; margin-top: 22px; align-items: start; }
.cintro { padding: 24px 26px; display: flex; flex-direction: column; gap: 18px; }
.cintro .lead { font-size: 16px; line-height: 1.8; }
.cintro h4 { font-family: var(--fh); font-size: 17px; margin-bottom: 8px; }
.cnt { display: flex; align-items: center; gap: 10px; }
.cnt b { font-family: var(--fh); font-size: 46px; line-height: 1; padding: 6px 14px 4px; border-radius: 14px; background: var(--sec); color: var(--sec-ink); border: var(--bw) solid var(--ink); }
.cnt span { font-weight: 800; font-size: 16px; }
.info { padding: 24px 26px; display: flex; flex-direction: column; gap: 22px; }
.info h4 { font-family: var(--fh); font-size: 17px; margin-bottom: 8px; display: flex; align-items: center; gap: 8px; }
.info h4::before { content: ''; width: 12px; height: 12px; border-radius: 4px; background: var(--sec); border: 2px solid var(--ink); }
.info .lead { font-size: 16px; line-height: 1.8; }
.goals li { position: relative; padding: 4px 0 4px 30px; font-size: 15px; }
.goals li::before { content: ''; position: absolute; left: 0; top: 7px; width: 20px; height: 20px; border-radius: 50%; background: var(--lime) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath d='M5 10.5l3.2 3L15 6.5' fill='none' stroke='%23141414' stroke-width='2.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center / 100% no-repeat; border: 2px solid var(--ink); }
.flow { display: flex; flex-wrap: wrap; gap: 10px 6px; align-items: center; }
.flow li { display: flex; align-items: center; gap: 6px; }
.flow li b { display: inline-flex; align-items: center; gap: 7px; padding: 6px 13px 6px 6px; border-radius: 20px; border: 2px solid var(--ink); background: #fff; font-size: 14px; }
.flow li b i { font-style: normal; display: inline-flex; width: 22px; height: 22px; border-radius: 50%; background: var(--ink); color: var(--lime); font-size: 12px; align-items: center; justify-content: center; font-family: var(--fh); }
.flow li:not(:last-child)::after { content: ''; width: 14px; height: 2.5px; background: var(--ink); border-radius: 2px; }
.res { display: flex; flex-wrap: wrap; gap: 8px; }
.res span { padding: 5px 12px; border-radius: 10px; background: rgba(38, 36, 159, .07); border: 1.5px solid rgba(38, 36, 159, .35); font-size: 14px; color: var(--indigo); font-weight: 600; }

.side { display: flex; flex-direction: column; gap: 16px; }
.sample { overflow: hidden; }
.sample .cv { position: relative; display: block; aspect-ratio: 16 / 9; background: var(--navy); border-bottom: var(--bw) solid var(--ink); cursor: pointer; overflow: hidden; }
.sample .cv img { width: 100%; height: 100%; object-fit: cover; transition: transform .7s var(--ease); }
.sample .cv:hover img { transform: scale(1.04); }
.sample .cv .bigplay { width: 62px; height: 62px; margin: -31px 0 0 -31px; }
.sample .tx { padding: 14px 18px 18px; }
.sample .tx .k { display: inline-flex; align-items: center; gap: 6px; font-size: 12px; font-weight: 800; letter-spacing: 1px; color: var(--indigo); }
.sample .tx h3 { font-family: var(--fh); font-size: 20px; line-height: 1.3; margin: 4px 0 6px; }
.sample .tx p { font-size: 13.5px; color: #44473f; }
.sample .tx .btn { margin-top: 12px; width: 100%; }
.nosample { padding: 16px 18px; }
.nosample h3 { font-family: var(--fh); font-size: 17px; margin-bottom: 6px; }
.nosample p { font-size: 13.5px; color: #44473f; }
.shots { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-top: 12px; }
.shots img { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; border-radius: 10px; border: 2px solid var(--ink); }

/* 目录 */
.grp-h { display: flex; align-items: center; flex-wrap: wrap; gap: 8px 12px; margin: 26px 0 12px; }
.grp-h:first-child { margin-top: 0; }
.grp-h b { font-family: var(--fh); font-size: 18px; padding: 3px 12px; border-radius: 10px; background: var(--gc, var(--sec)); color: var(--gk, var(--sec-ink)); border: 2px solid var(--ink); }
.grp-h span { font-size: 13.5px; color: var(--grey); }
.dtabs { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; }
.dtabs button { display: inline-flex; align-items: center; gap: 8px; height: 42px; padding: 0 8px 0 16px; border-radius: 21px; border: var(--bw) solid var(--ink); background: #fff; font-weight: 800; font-size: 15px; box-shadow: 2px 2px 0 var(--ink); transition: transform .2s var(--ease), box-shadow .2s var(--ease), background .2s; }
.dtabs button small { min-width: 26px; height: 26px; padding: 0 6px; border-radius: 13px; background: #eceee4; font-size: 12px; display: inline-flex; align-items: center; justify-content: center; }
.dtabs button.on { background: var(--gc); color: var(--gk); box-shadow: 4px 4px 0 var(--ink); transform: translate(-1px, -1px); }
.dtabs button.on small { background: var(--ink); color: #fff; }
.dpane { display: none; }
.dpane.on { display: block; animation: pageIn .4s var(--ease) backwards; }
.dirblk:not(.tabbed) .dpane + .dpane { margin-top: 28px; }
.lessons { display: grid; grid-template-columns: repeat(6, 1fr); gap: 14px; }
.lessons.wide { grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); }
.ls { position: relative; display: flex; flex-direction: column; border-radius: 14px; border: 2.5px solid var(--ink); background: #fff; overflow: hidden; box-shadow: 3px 3px 0 var(--ink); }
.ls .im { position: relative; aspect-ratio: 16 / 9; background: #e9ebe2; border-bottom: 2px solid var(--ink); overflow: hidden; }
.ls .im.sq { aspect-ratio: 1 / 1; }
.ls .im.c3 { aspect-ratio: 3 / 2; }
.ls .im.strip { aspect-ratio: 345 / 100; }
.lessons.strips { grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); }
.ls .im img { width: 100%; height: 100%; object-fit: cover; }
.ls .im.gen { display: flex; flex-direction: column; justify-content: space-between; padding: 9px 11px; background: var(--gc, var(--sec)) repeating-linear-gradient(135deg, rgba(20, 20, 20, .07) 0 7px, transparent 7px 16px); color: var(--gk, var(--sec-ink)); }
.ls .im.gen .gl { align-self: flex-start; font-size: 11.5px; font-weight: 800; padding: 1px 8px; border-radius: 8px; background: #fff; color: var(--ink); border: 1.5px solid var(--ink); max-width: 100%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.ls .im.gen .gn { align-self: flex-end; font-family: var(--fh); font-size: 40px; line-height: 1; }
.ls .tx { padding: 9px 11px 11px; }
.ls .tx b { display: block; font-size: 14.5px; line-height: 1.4; }
.ls .tx b i { font-style: normal; font-family: var(--fh); font-size: 12px; color: var(--grey); margin-right: 5px; }
.ls .tx span { display: block; font-size: 12.5px; color: var(--grey); line-height: 1.5; margin-top: 3px; }
.ls .tx .q { color: var(--indigo); font-weight: 700; }
.ls.playable { cursor: pointer; border-color: var(--ink); outline: 3px solid var(--lime); outline-offset: -1px; }
.ls.playable .im::after { content: '样课 ▶'; position: absolute; right: 7px; bottom: 7px; padding: 2px 9px; border-radius: 10px; background: var(--lime); border: 2px solid var(--ink); font-size: 12px; font-weight: 800; }
.ls.noimg .tx { padding: 12px 13px; }
.wall { display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 10px; }
.wall img { width: 100%; height: auto; border-radius: 10px; border: 2px solid var(--ink); background: #fff; }
.names { display: flex; flex-wrap: wrap; gap: 8px; }
.names span { padding: 6px 13px; border-radius: 12px; border: 2px solid var(--ink); background: #fff; font-size: 14px; font-weight: 600; }
.dirs3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.dcol { padding: 16px; border-radius: 18px; border: var(--bw) solid var(--ink); background: #fff; box-shadow: 4px 4px 0 var(--ink); }
.dcol h4 { font-family: var(--fh); font-size: 18px; display: flex; justify-content: space-between; align-items: center; margin-bottom: 10px; }
.dcol h4 small { font-family: -apple-system, 'Microsoft YaHei', sans-serif; font-size: 12px; font-weight: 700; padding: 2px 9px; border-radius: 10px; background: var(--ink); color: #fff; }
.dcol li { padding: 9px 0; border-top: 1.5px dashed rgba(20, 20, 20, .15); }
.dcol li b { font-size: 15px; display: block; }
.dcol li span { font-size: 13px; color: var(--grey); }
.steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 12px; counter-reset: s; }
.steps li { position: relative; padding: 16px 14px 14px; border-radius: 16px; border: 2.5px solid var(--ink); background: #fff; box-shadow: 3px 3px 0 var(--ink); }
.steps li::before { counter-increment: s; content: counter(s, decimal-leading-zero); font-family: var(--fh); font-size: 26px; color: var(--sec-ink); background: var(--sec); border: 2px solid var(--ink); border-radius: 10px; padding: 0 8px; display: inline-block; line-height: 1.3; margin-bottom: 8px; }
.steps li b { display: block; font-size: 16px; }
.steps li span { font-size: 13px; color: var(--grey); }

.pager { display: flex; justify-content: space-between; gap: 14px; margin-top: 44px; flex-wrap: wrap; }
.pager a { flex: 1; min-width: 220px; padding: 14px 18px; display: flex; flex-direction: column; }
.pager a.nx { text-align: right; }
.pager a small { font-size: 12px; color: var(--grey); font-weight: 700; }
.pager a b { font-family: var(--fh); font-size: 18px; }

/* ---------- 页脚（只在课程页） ---------- */
.foot { margin-top: 56px; border-top: var(--bw) solid var(--ink); background: var(--navy); color: #c9cde0; font-size: 13px; }
.foot .wrap { padding-top: 26px; padding-bottom: 30px; display: flex; flex-wrap: wrap; gap: 10px 24px; align-items: center; justify-content: space-between; }
.foot img { width: 96px; opacity: .95; }
.foot b { color: var(--lime); font-weight: 700; }

/* ---------- 样课播放层 ---------- */
.player { position: fixed; inset: 0; z-index: 80; display: none; background: rgba(10, 13, 32, .97); overflow: hidden; }
.player.open { display: block; }
.pin { position: absolute; left: 0; top: 0; display: flex; flex-direction: column; transform-origin: 50% 50%; }
.pbar { flex-shrink: 0; display: flex; align-items: center; gap: 10px; padding: 10px 16px; color: #fff; }
.pbar .tt { flex: 1; min-width: 0; line-height: 1.3; }
.pbar .tt b { display: block; font-family: var(--fh); font-size: 18px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.pbar .tt span { font-size: 12.5px; color: #aab0cc; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; display: block; }
.pbtn { height: 38px; padding: 0 14px; border-radius: 19px; border: 2px solid #fff; color: #fff; font-size: 14px; font-weight: 700; display: inline-flex; align-items: center; gap: 6px; white-space: nowrap; }
.pbtn svg { width: 16px; height: 16px; }
.pbar .tt .mic { color: var(--lime); font-weight: 700; }
.pbtn.hl { background: var(--lime); color: var(--ink); border-color: var(--lime); }
.pbtn.hl .lbl { display: inline; }
.pbtn.x { width: 38px; padding: 0; justify-content: center; background: var(--lime); color: var(--ink); border-color: var(--lime); font-size: 22px; }
.pstage { flex: 1; min-height: 0; display: flex; align-items: center; justify-content: center; padding: 0 16px 16px; }
.pbox { position: relative; background: #000; border-radius: 12px; overflow: hidden; box-shadow: 0 0 0 3px #fff; }
.pbox iframe, .pbox video { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; background: #000; }
.ptip { display: none; position: absolute; left: 50%; bottom: 18px; transform: translateX(-50%); padding: 8px 14px; border-radius: 16px; background: var(--lime); color: var(--ink); font-size: 13px; font-weight: 700; white-space: nowrap; box-shadow: 0 0 0 2px var(--ink); }
.player.portrait .ptip { display: block; }
.player.rot .pstage { padding: 0; }
.player.rot .pbox { border-radius: 0; box-shadow: none; }
.player.rot .ptip { display: none; }
.rot-btn { display: none; }
.player.portrait .rot-btn, .player.rot .rot-btn { display: inline-flex; }
.player.rot .rot-btn { background: #fff; color: var(--ink); }

/* ---------- 电脑屏幕矮一些时（笔记本）收紧，仍然一屏放下 ---------- */
@media (min-width: 901px) and (max-height: 780px) {
  .bar-in { height: 60px; }
  .l1-head { padding-bottom: 12px; }
  .kick { display: none; }
  .l1-head h1 { font-size: 28px; }
  .l1-stats span { padding: 5px 14px; }
  .l1-stats b { font-size: 19px; }
  .marq { height: 40px; }
  .pn-in { padding: 24px 30px 26px; }
  .pn-t { font-size: 48px; margin: 8px 0 10px; }
  .pn-lead { font-size: 14.5px; }
  .pn-subs { margin-top: 12px; }
  .pn-nums { margin-top: 14px; }
  .pn-nums b { font-size: 24px; }
  .pn-v { font-size: 28px; letter-spacing: 5px; }
  .bento { padding-bottom: 18px; gap: 12px; }
  .bento.r3 { grid-template-rows: repeat(3, minmax(170px, 1fr)); }
  .bt-title { padding: 18px 24px 20px; }
  .bt-title h1 { font-size: 40px; }
  .tall .bt-title h1 { font-size: 52px; }
  .r3 .tt-stats { display: none; }
  .tt-stats b { font-size: 24px; }
  .tall .tt-stats b { font-size: 28px; }
  .bt { padding: 14px 18px; }
  .bt-no .ol { font-size: 28px; }
  .bt-tx h3 { font-size: 21px; }
  .bt { --at: 88px; }
  .pn-en { display: none; }
  .pn-head { gap: 12px; }
}
/* 方块上的小封面按方块实际高度缩，矮屏上也不压住箭头和课名 */
@supports (width: 1cqh) {
  @media (min-width: 901px) and (min-height: 620px) {
    .bt { container-type: size; }
    .bt.w2 .bt-art { width: min(44cqw, calc((100cqh - 58px) * 1.7778)); }
    .r2 .bt.w2 .bt-art { width: min(46cqw, calc((100cqh - 54px) * 1.7778)); }
    .r2 .bt:not(.w2) .bt-art { left: 50%; right: auto; width: min(calc(100cqw - 16px), calc((100cqh - var(--at, 100px) - 39px) * 1.7778)); transform: translateX(-50%) rotate(-2deg); }
    .r2 .bt:not(.w2):hover .bt-art { transform: translateX(-50%) translateY(-10px) scale(1.02); }
  }
}

/* ---------- 平板 ---------- */
@media (max-width: 1080px) {
  .lessons { grid-template-columns: repeat(4, 1fr); }
  .ctop { grid-template-columns: 1fr 340px; }
  .bar-hint { display: none; }
  .brand .sys b { display: none; }
  .sw a { padding: 0 11px 0 8px; font-size: 13px; }
  .bt-tx h3 { font-size: 21px; }
}
/* 手风琴改竖排、方块改两列 */
@media (max-width: 900px) {
  .lessons { grid-template-columns: repeat(3, 1fr); }
  .ctop { grid-template-columns: 1fr; }
  .dirs3 { grid-template-columns: 1fr; }
  .brand .sys b { display: block; }
  .brand.sm .sys b { display: none; }

  .l1-in { padding-bottom: 18px; }
  .acc { flex: none; flex-direction: column; min-height: 0; gap: 12px; }
  .pn { flex: none; border-radius: 22px; box-shadow: 4px 4px 0 var(--ink); transition: box-shadow .3s; }
  .pn.on { cursor: pointer; }
  .pn:not(.on):hover { transform: none; box-shadow: 4px 4px 0 var(--ink); }
  .pn-head { position: relative; inset: auto; flex-direction: row; align-items: center; gap: 10px; padding: 12px 12px 12px 14px; text-align: left; }
  .pn.on .pn-head { opacity: 1; visibility: visible; }
  .pn-no { font-size: 14px; padding: 5px 8px; }
  .pn-v { writing-mode: horizontal-tb; font-size: 22px; letter-spacing: 1px; }
  .pn-en { writing-mode: horizontal-tb; font-size: 10px; letter-spacing: 2px; }
  .pn-n { margin: 0 0 0 auto; }
  .pn-ic { width: 38px; height: 38px; }
  .pn-ic svg { width: 17px; height: 17px; }
  .pn:hover .pn-ic { transform: none; background: #fff; }
  .pn.on .pn-ic { background: var(--ink); color: var(--lime); }
  .dark.on .pn-ic { background: #fff; color: var(--ink); }
  .pn.on .pn-ic .ip { display: none; }
  .pn.on .pn-ic .ia { display: block; }
  .pn-bw { position: static; display: grid; grid-template-rows: 0fr; transition: grid-template-rows .5s var(--ease), opacity .3s, visibility 0s .5s; }
  .pn.on .pn-bw { grid-template-rows: 1fr; transition: grid-template-rows .5s var(--ease), opacity .45s .08s, visibility 0s; }
  .pn-body { position: static; width: auto; min-height: 0; overflow: hidden; }
  .pn-in { height: auto; padding: 2px 14px 16px; }
  .pn-k, .pn-t, .pn-wm, .pn-spot { display: none; }
  .pn.on .pn-in > :not(.pn-deco) { transition-delay: .1s; }
  .pn-deco { top: 0; bottom: auto; right: 6px; width: 112px; height: 112px; }
  .pn-stage { right: 6%; width: 88%; bottom: 0; height: 22%; box-shadow: 0 4px 0 var(--ink); border-width: 2.5px; }
  .pn-actor { right: 0; width: 100%; bottom: 10%; height: 90%; }
  .pn-lead { max-width: none; min-height: 100px; padding-right: 116px; font-size: 14px; }
  .pn-subs { max-width: none; margin-top: 10px; gap: 6px; }
  .pn-subs a { font-size: 12.5px; padding: 2px 10px; }
  .pn-nums { margin-top: 14px; }
  .pn-nums span { padding: 0 14px; }
  .pn-nums b { font-size: 22px; }
  .pn-acts { width: 100%; padding-top: 14px; gap: 10px; }
  .pn-acts .btn { flex: 1; height: 44px; font-size: 15px; padding: 0 12px; }
  .marq { height: 40px; }
  .marq a { font-size: 14px; padding: 0 16px; }

  .bar-in { flex-wrap: wrap; height: auto; min-height: 60px; padding: 10px 16px; gap: 10px; }
  .sw { order: 3; width: 100%; margin: 0; justify-content: space-between; overflow-x: auto; scrollbar-width: none; }
  .sw::-webkit-scrollbar { display: none; }
  .sw a { flex: 1 0 auto; justify-content: center; }
  .back { margin-right: auto; }
  .bar.solid .bar-in { flex-wrap: nowrap; }
  .bar.solid .back { margin-right: 0; }

  .bento { grid-template-columns: 1fr 1fr; padding: 2px 16px 24px; gap: 12px; }
  .bento.r2, .bento.r3 { grid-template-rows: none; grid-auto-rows: auto; }
  .bt-title, .tall .bt-title { grid-column: 1 / -1; grid-row: auto; padding: 20px 20px 22px; border-radius: 22px; }
  .bt-title h1, .tall .bt-title h1 { font-size: 38px; margin-top: 6px; }
  .r3 .tt-lead { display: block; }
  .tt-lead { max-width: none; padding-right: 96px; font-size: 14px; margin-top: 10px; }
  .tt-art, .r3 .tt-art, .tall .tt-art { max-height: 92px; max-width: 30%; top: 52px; bottom: auto; right: 14px; }
  .tt-cvw { flex: none; display: block; width: 100%; max-width: 480px; max-height: none; margin: 18px 0 0; }
  .tt-cv { width: 100%; height: auto; }
  .tt-stats, .tall .tt-stats { margin-top: 16px; }
  .tt-stats b, .tall .tt-stats b { font-size: 26px; }
  .bt-title .btn { margin-top: 18px; max-width: 100%; }
  .bt { min-height: 214px; padding: 14px; border-radius: 20px; box-shadow: 4px 4px 0 var(--ink); }
  .bt.w2 { grid-column: 1 / -1; min-height: 176px; }
  .bt:not(.w2) .bt-art, .r2 .bt:not(.w2) .bt-art { position: relative; left: auto; right: auto; top: auto; width: 100%; margin: 12px 0; transform: rotate(-2deg); }
  .bt.w2 .bt-art, .r2 .bt.w2 .bt-art { width: 46%; right: 14px; top: 14px; }
  .bt-no .ol { font-size: 28px; }
  .bt-tx h3 { font-size: 18px; }
  .bt-tx p { font-size: 12px; }
  .r2 .bt.w2 .bt-brief { display: none; }
  .bt-pk { display: none; }
  .bt-go { width: 36px; height: 36px; }
  .bt-go svg { width: 16px; height: 16px; }
}
/* ---------- 手机 ---------- */
@media (max-width: 600px) {
  .wrap { padding: 0 16px; }
  .bar-in { padding: 10px 16px; }
  .brand { gap: 10px; }
  .brand img { width: 80px; }
  .brand .sys { padding-left: 10px; }
  .brand .sys b { font-size: 14px; }
  .brand.sm img { width: 70px; }
  .l1-in { padding: 0 16px 16px; }
  .l1-head { padding: 4px 0 14px; gap: 12px; }
  .l1-head h1 { font-size: 26px; }
  .l1-stats { width: 100%; }
  .l1-stats span { flex: 1; flex-direction: column; align-items: center; gap: 0; padding: 6px 4px; font-size: 11.5px; }
  .l1-stats b { font-size: 20px; line-height: 1.2; }
  .pn-en { display: none; }
  .sw a { font-size: 12.5px; padding: 0 8px 0 6px; gap: 5px; }
  .sw a i { width: 10px; height: 10px; }
  .bar-tt { display: none; }
  .bar.solid .brand { margin-left: auto; }
  .back { height: 38px; font-size: 13.5px; }
  .back svg { width: 27px; height: 27px; }
  .back span { max-width: 9em; }
  .l3 .wrap { padding-top: 20px; }
  .h2 { margin: 34px 0 14px; }
  .h2 h2 { font-size: 22px; }
  .cintro { padding: 18px; }
  .cintro .lead { font-size: 15px; }
  .cnt b { font-size: 36px; }
  .dtabs { gap: 6px; }
  .dtabs button { height: 38px; font-size: 14px; padding: 0 6px 0 12px; }
  .ls .im.gen .gn { font-size: 30px; }
  .chead h1 { font-size: 30px; }
  .chead h1 small { display: block; margin: 4px 0 0; font-size: 17px; }
  .info { padding: 18px; gap: 18px; }
  .info .lead { font-size: 15px; }
  .lessons { grid-template-columns: 1fr 1fr; gap: 10px; }
  .lessons.wide { grid-template-columns: 1fr; }
  .lessons.strips { grid-template-columns: 1fr 1fr; }
  .wall { grid-template-columns: 1fr 1fr; gap: 8px; }
  .steps { grid-template-columns: 1fr 1fr; }
  .pager a { min-width: 0; }
  .pbar { padding: 8px 10px; gap: 6px; }
  .pbar .tt b { font-size: 15px; }
  .pbtn { height: 34px; padding: 0 10px; font-size: 13px; }
  .pbtn .lbl { display: none; }
  .pbtn.x { width: 34px; }
  .pstage { padding: 0 8px 8px; }
}
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { transition: none !important; animation: none !important; scroll-behavior: auto !important; } }