/* ==========================================================================
   MK官网 黑白编辑版式（mk-11）
   纯黑白排版，切分依靠 1px 细线与留白，全站不使用圆角、阴影与渐变。
   红色只出现在按钮悬停与服务区的一条强调细线上。
   ========================================================================== */

:root {
    --ink: #000000;
    --paper: #ffffff;
    --line: #262626;
    --hair: #e4e4e4;
    --mute: #8c8c8c;
    --accent: #e10600;
    --wrap: 1320px;
    --gutter: 40px;
    --band: 96px;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
}

html body {
    margin: 0;
    background: var(--paper);
    color: var(--ink);
    font-family: "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    font-size: 15px;
    line-height: 1.78;
    letter-spacing: 0.01em;
}

body img {
    display: block;
    width: 100%;
    max-width: 100%;
    max-height: 620px;
    object-fit: cover;
    object-position: center;
}

body a {
    color: inherit;
    text-decoration: none;
}

body ul,
body ol,
body dl,
body dd,
body figure,
body blockquote {
    margin: 0;
    padding: 0;
    list-style: none;
}

body h1,
body h2,
body h3,
body p {
    margin: 0;
    text-align: left;
}

[id] {
    scroll-margin-top: 88px;
}

body h1 {
    font-size: 34px;
    line-height: 1.28;
    letter-spacing: 0.02em;
    font-weight: 700;
}

body h2 {
    font-size: 15px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    font-weight: 700;
}

body h3 {
    font-size: 16px;
    font-weight: 700;
    letter-spacing: 0.04em;
}

/* ---------------------------------------------------------------- 页头 --- */

.bw-header {
    position: sticky;
    top: 0;
    z-index: 60;
    background: var(--ink);
    color: var(--paper);
    border-bottom: 1px solid var(--line);
}

.hdr-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    max-width: var(--wrap);
    margin: 0 auto;
    padding: 0 var(--gutter);
    min-height: 64px;
}

.bw-header.is-scrolled {
    border-bottom-color: #3a3a3a;
}

.brand {
    font-size: 18px;
    font-weight: 700;
    letter-spacing: 0.24em;
    white-space: nowrap;
}

.nav-list {
    display: flex;
    align-items: center;
    gap: 30px;
}

.nav-list a {
    display: inline-block;
    font-size: 12px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    padding: 6px 0;
    border-bottom: 2px solid transparent;
}

.nav-list a:hover,
.nav-list a:focus-visible {
    border-bottom-color: var(--paper);
}

.tools {
    display: flex;
    align-items: center;
    gap: 14px;
}

.tool {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border: 1px solid var(--line);
    font-size: 13px;
    color: var(--paper);
}

.tool:hover,
.tool:focus-visible {
    border-color: var(--paper);
}

.menu-toggle {
    display: none;
    width: 40px;
    height: 34px;
    border: 1px solid var(--line);
    background: transparent;
    color: var(--paper);
    font-size: 14px;
    cursor: pointer;
}

/* -------------------------------------------------------------- 拼贴区 --- */

.collage {
    display: grid;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    grid-template-rows: 240px 180px 240px;
    gap: 1px;
    background: var(--line);
    border-bottom: 1px solid var(--line);
}

.c-cell {
    position: relative;
    overflow: hidden;
    background: var(--ink);
    margin: 0;
}

.c-cell img {
    width: 100%;
    height: 100%;
    max-height: 100%;
}

.c-main {
    grid-column: 1 / 8;
    grid-row: 1 / 3;
}

.c-main img {
    object-position: 50% 32%;
}

.c-a {
    grid-column: 8 / 13;
    grid-row: 1 / 2;
}

.c-a img {
    object-position: 62% 38%;
}

.c-b {
    grid-column: 8 / 11;
    grid-row: 2 / 3;
}

.c-b img {
    object-position: 44% 62%;
}

.c-c {
    grid-column: 11 / 13;
    grid-row: 2 / 3;
}

.c-c img {
    object-position: 28% 50%;
}

.c-d {
    grid-column: 1 / -1;
    grid-row: 3 / 4;
}

.c-d img {
    object-position: 50% 70%;
}

.collage-title {
    position: absolute;
    left: 18px;
    right: 18px;
    bottom: 18px;
    background: rgba(0, 0, 0, 0.62);
    color: var(--paper);
    padding: 20px 22px;
}

.collage-kicker {
    font-size: 11px;
    letter-spacing: 0.26em;
    text-transform: uppercase;
    color: var(--paper);
}

.collage-title h1 {
    margin: 10px 0 10px;
    font-size: 26px;
}

.collage-lead {
    font-size: 13px;
    line-height: 1.7;
    color: #ededed;
    margin-bottom: 16px;
}

/* --------------------------------------------------------------- 按钮 --- */

.btn-outline,
.btn-solid,
.btn-ghost {
    display: inline-block;
    font-size: 12px;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    padding: 12px 26px;
    border: 1px solid var(--ink);
}

.btn-outline {
    border-color: var(--paper);
    color: var(--paper);
}

.btn-outline:hover,
.btn-outline:focus-visible {
    background: var(--accent);
    border-color: var(--accent);
}

.btn-solid {
    background: var(--ink);
    color: var(--paper);
    border-color: var(--ink);
}

.btn-solid:hover,
.btn-solid:focus-visible {
    background: var(--accent);
    border-color: var(--accent);
}

.btn-ghost {
    background: transparent;
    color: var(--ink);
}

.btn-ghost:hover,
.btn-ghost:focus-visible {
    background: var(--ink);
    color: var(--paper);
}

/* -------------------------------------------------- 首页：栏头与分节 --- */

.ix-band {
    max-width: var(--wrap);
    margin: 0 auto;
    padding: var(--band) var(--gutter);
}

.ix-rule {
    border: 0;
    border-top: 1px solid var(--line);
    margin: 0;
}

.band-head {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 40px;
    padding-bottom: 18px;
    border-bottom: 1px solid var(--hair);
}

.band-title {
    flex: 0 0 auto;
}

.band-lead {
    flex: 1 1 auto;
    max-width: 620px;
    font-size: 13px;
    line-height: 1.7;
    color: var(--mute);
    text-align: right;
}

.band-sub {
    margin: 56px 0 14px;
    font-size: 13px;
    letter-spacing: 0.18em;
}

.band-copy {
    max-width: 860px;
    margin-top: 22px;
    font-size: 15px;
    color: #1c1c1c;
}

.band-copy + .band-copy {
    margin-top: 16px;
}

.g-six {
    display: grid;
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: 1px;
    margin-top: 40px;
    background: var(--hair);
}

.g-item {
    background: var(--paper);
    padding: 0 0 12px;
}

.g-frame {
    aspect-ratio: 4 / 5;
    overflow: hidden;
    background: var(--ink);
}

.g-frame img {
    width: 100%;
    height: 100%;
    max-height: 100%;
}

.g-frame-one img {
    object-position: 18% 50%;
}

.g-frame-two img {
    object-position: 74% 42%;
}

.g-frame-three img {
    object-position: 50% 26%;
}

.g-frame-four img {
    object-position: 82% 58%;
}

.g-frame-five img {
    object-position: 50% 12%;
}

.g-frame-six img {
    object-position: 38% 70%;
}

.g-cap {
    margin-top: 12px;
    font-size: 12px;
    letter-spacing: 0.08em;
    color: #333333;
}

.play-split {
    display: grid;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 1px;
    margin-top: 36px;
    background: var(--hair);
}

.play-left {
    grid-column: 1 / 5;
    background: var(--paper);
    padding: 0 32px 8px 0;
}

.play-note {
    font-size: 14px;
    color: #1c1c1c;
}

.play-note + .play-note {
    margin-top: 18px;
}

.play-list {
    grid-column: 5 / 13;
    border-left: 1px solid var(--line);
    padding-left: 32px;
    background: var(--paper);
}

.play-item {
    display: grid;
    grid-template-columns: 46px minmax(0, 1fr);
    column-gap: 18px;
    padding: 22px 0;
    border-bottom: 1px solid var(--hair);
}

.play-item:last-child {
    border-bottom: 0;
}

.play-no {
    font-size: 12px;
    letter-spacing: 0.2em;
    color: var(--mute);
    padding-top: 4px;
}

.play-name {
    grid-column: 2 / 3;
}

.play-line {
    grid-column: 2 / 3;
    margin-top: 8px;
    font-size: 14px;
    color: #444444;
}

.mx-split {
    display: grid;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 40px;
    margin-top: 36px;
}

.mx-figure {
    grid-column: 1 / 6;
}

.mx-figure img {
    aspect-ratio: 4 / 5;
    max-height: 560px;
    object-position: 50% 18%;
}

.mx-cap {
    margin-top: 10px;
    font-size: 12px;
    color: var(--mute);
}

.mx-copy {
    grid-column: 6 / 13;
}

.mx-block + .mx-block {
    margin-top: 26px;
    padding-top: 26px;
    border-top: 1px solid var(--hair);
}

.mx-line {
    margin-top: 8px;
    font-size: 14px;
    color: #444444;
}

.mx-title {
    font-size: 17px;
    letter-spacing: 0.06em;
    font-weight: 700;
}

.mx-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-top: 34px;
}

.ed-three {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 40px;
    margin-top: 40px;
}

.ed-figure {
    aspect-ratio: 4 / 3;
    overflow: hidden;
    background: var(--ink);
}

.ed-figure img {
    width: 100%;
    height: 100%;
    max-height: 100%;
}

.ed-figure-one img {
    object-position: 50% 66%;
}

.ed-figure-two img {
    object-position: 24% 40%;
}

.ed-figure-three img {
    object-position: 78% 52%;
}

.ed-title {
    margin-top: 18px;
}

.ed-line {
    margin-top: 10px;
    font-size: 14px;
    color: #444444;
}

.svc-row {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1px;
    margin-top: 40px;
    border-top: 1px solid var(--accent);
}

.svc-line {
    display: block;
    padding: 22px 18px 18px 0;
    font-size: 14px;
    border-bottom: 1px solid var(--line);
}

.svc-line:hover,
.svc-line:focus-visible {
    color: var(--accent);
    border-bottom-color: var(--accent);
}

.faq-table {
    margin-top: 34px;
    border-top: 1px solid var(--line);
}

.faq-row {
    display: grid;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 24px;
    padding: 20px 0;
    border-bottom: 1px solid var(--hair);
}

.faq-row dt {
    grid-column: 1 / 5;
    font-size: 15px;
    font-weight: 700;
}

.faq-row dd {
    grid-column: 5 / 13;
    font-size: 14px;
    color: #4a4a4a;
}

/* --------------------------------------------------------------- 关于 --- */

.ab-hero {
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    min-height: 40vh;
    background: var(--ink);
    color: var(--paper);
    padding: 72px var(--gutter) 56px;
}

.ab-kicker {
    font-size: 12px;
    letter-spacing: 0.24em;
    color: #b9b9b9;
}

.ab-hero h1 {
    margin: 14px 0 12px;
}

.ab-line {
    max-width: 720px;
    font-size: 15px;
    color: #ededed;
}

.ab-text {
    max-width: var(--wrap);
    margin: 0 auto;
    padding: var(--band) var(--gutter);
}

.ab-title {
    margin-bottom: 16px;
}

.ab-para {
    max-width: 66%;
    font-size: 15px;
    color: #1c1c1c;
}

.ab-para + .ab-para {
    margin-top: 48px;
}

.ab-figure {
    margin-top: 48px;
}

.ab-figure-one img {
    aspect-ratio: 21 / 9;
    max-height: 420px;
    object-position: 50% 42%;
}

.ab-figure-two img {
    aspect-ratio: 3 / 4;
    max-height: 520px;
    object-position: 52% 24%;
}

.ab-figure-three img {
    aspect-ratio: 16 / 6;
    max-height: 400px;
    object-position: 30% 60%;
}

.ab-cap {
    margin-top: 10px;
    font-size: 12px;
    color: var(--mute);
}

.ab-pair {
    display: grid;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 40px;
    margin-top: 48px;
}

.ab-pair .ab-figure {
    grid-column: 1 / 6;
    margin-top: 0;
}

.ab-pair .ab-para {
    grid-column: 6 / 13;
    max-width: 100%;
    align-self: end;
}

.ab-numbers {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1px;
    max-width: var(--wrap);
    margin: 32px auto 0;
    padding: 0 var(--gutter);
    background: transparent;
}

.ab-num {
    border-top: 1px solid var(--line);
    padding: 24px 18px 18px 0;
}

.ab-num b {
    display: block;
    font-size: 44px;
    line-height: 1.1;
    letter-spacing: 0.02em;
    font-weight: 700;
}

.ab-num span {
    display: block;
    margin-top: 8px;
    font-size: 12px;
    letter-spacing: 0.18em;
    color: var(--mute);
}

.ab-note {
    max-width: var(--wrap);
    margin: 20px auto 0;
    padding: 0 var(--gutter);
    font-size: 12px;
    color: var(--mute);
}

.ab-para-tail {
    max-width: 880px;
    margin: 32px auto 0;
    padding: 0 var(--gutter);
}

/* --------------------------------------------------------------- 玩法 --- */

.pd-head {
    max-width: var(--wrap);
    margin: 0 auto;
    padding: 80px var(--gutter) 40px;
    border-bottom: 1px solid var(--line);
}

.pd-lead {
    max-width: 760px;
    margin-top: 18px;
    color: #333333;
}

.pd-title {
    max-width: var(--wrap);
    margin: 0 auto;
    padding: 56px var(--gutter) 14px;
}

.pd-copy {
    max-width: 880px;
    margin: 0 auto;
    padding: 0 var(--gutter);
    font-size: 15px;
    color: #1c1c1c;
}

.pd-copy-gap {
    margin-top: 20px;
}

.pd-lead + .pd-lead {
    margin-top: 14px;
}

.ct-lead + .ct-lead {
    margin-top: 14px;
}

.pd-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1px;
    max-width: var(--wrap);
    margin: 36px auto 0;
    padding: 0 var(--gutter);
    background: var(--hair);
}

.pd-cell {
    background: var(--paper);
    padding: 0 0 22px;
}

.pd-frame {
    aspect-ratio: 4 / 5;
    overflow: hidden;
    background: var(--ink);
}

.pd-frame img {
    width: 100%;
    height: 100%;
    max-height: 100%;
}

.pd-frame-one img {
    object-position: 30% 20%;
}

.pd-frame-two img {
    object-position: 66% 34%;
}

.pd-frame-three img {
    object-position: 44% 62%;
}

.pd-frame-four img {
    object-position: 88% 44%;
}

.pd-frame-five img {
    object-position: 12% 54%;
}

.pd-frame-six img {
    object-position: 58% 72%;
}

.pd-frame-seven img {
    object-position: 50% 40%;
}

.pd-frame-eight img {
    object-position: 22% 78%;
}

.pd-cap {
    display: block;
    margin-top: 16px;
    padding-top: 14px;
    border-top: 1px solid var(--hair);
}

.pd-cap .pd-name {
    margin-top: 0;
}

.pd-name {
    margin-top: 16px;
}

.pd-line {
    margin-top: 8px;
    font-size: 14px;
    color: #4a4a4a;
}

.pd-rule {
    grid-column: 1 / -1;
    border: 0;
    border-top: 1px solid var(--line);
    margin: 0;
}

.pd-modes {
    max-width: var(--wrap);
    margin: 0 auto;
    padding: 0 var(--gutter);
}

.pd-row {
    display: grid;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 24px;
    padding: 18px 0;
    border-bottom: 1px solid var(--hair);
}

.pd-row dt {
    grid-column: 1 / 4;
    font-size: 15px;
    font-weight: 700;
}

.pd-row dd {
    grid-column: 4 / 13;
    font-size: 14px;
    color: #4a4a4a;
}

/* --------------------------------------------------------------- 资讯 --- */

.nw-head {
    max-width: var(--wrap);
    margin: 0 auto;
    padding: 80px var(--gutter) 34px;
}

.nw-lead {
    max-width: 740px;
    margin-top: 16px;
    color: #333333;
}

.nw-feature {
    margin: 0;
}

.nw-feature img {
    aspect-ratio: 5 / 2;
    max-height: 520px;
    object-position: 50% 48%;
}

.nw-cap {
    max-width: var(--wrap);
    margin: 12px auto 0;
    padding: 0 var(--gutter);
    font-size: 12px;
    color: var(--mute);
}

.nw-top {
    max-width: var(--wrap);
    margin: 0 auto;
    padding: 44px var(--gutter) 10px;
    border-bottom: 1px solid var(--line);
}

.nw-headline {
    font-size: 26px;
    letter-spacing: 0.02em;
    text-transform: none;
    line-height: 1.4;
}

.nw-summary {
    max-width: 820px;
    margin-top: 16px;
    color: #333333;
}

.nw-title {
    max-width: var(--wrap);
    margin: 0 auto;
    padding: 52px var(--gutter) 12px;
}

.nw-list {
    max-width: var(--wrap);
    margin: 0 auto;
    padding: 0 var(--gutter);
}

.nw-row {
    display: grid;
    grid-template-columns: 140px minmax(0, 1fr);
    gap: 24px;
    padding: 18px 0;
    align-items: baseline;
}

.nw-date {
    font-size: 12px;
    letter-spacing: 0.16em;
    color: var(--mute);
}

.nw-item {
    font-size: 16px;
    font-weight: 400;
}

.nw-rule {
    border: 0;
    border-top: 1px solid var(--hair);
    margin: 0;
}

.nw-copy {
    max-width: 860px;
    margin: 16px auto 0;
    padding: 0 var(--gutter);
    font-size: 15px;
    color: #1c1c1c;
}

.nw-copy-top {
    margin-top: 28px;
    padding-top: 20px;
    border-top: 1px solid var(--hair);
}

.nw-gallery {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 40px;
    max-width: var(--wrap);
    margin: 24px auto 0;
    padding: 0 var(--gutter);
}

.nw-fig-one img {
    aspect-ratio: 3 / 2;
    max-height: 420px;
    object-position: 40% 46%;
}

.nw-fig-two img {
    aspect-ratio: 3 / 2;
    max-height: 420px;
    object-position: 62% 66%;
}

/* --------------------------------------------------------------- 服务 --- */

.ct-head {
    max-width: var(--wrap);
    margin: 0 auto;
    padding: 80px var(--gutter) 34px;
}

.ct-lead {
    max-width: 720px;
    margin-top: 16px;
    color: #333333;
}

.ct-band {
    display: grid;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 56px;
    background: var(--ink);
    color: var(--paper);
    padding: 72px var(--gutter);
}

.ct-notes {
    grid-column: 1 / 6;
}

.ct-form {
    grid-column: 6 / 13;
}

.ct-title {
    color: var(--paper);
    text-transform: none;
    font-size: 15px;
    letter-spacing: 0.16em;
}

.ct-para {
    margin-top: 18px;
    font-size: 14px;
    color: #ededed;
}

.ct-figure {
    margin-top: 32px;
}

.ct-figure img {
    aspect-ratio: 3 / 2;
    max-height: 340px;
    object-position: 66% 40%;
}

.ct-cap {
    margin-top: 10px;
    font-size: 12px;
    color: #a9a9a9;
}

.ct-form-note {
    margin: 14px 0 26px;
    font-size: 13px;
    color: #c9c9c9;
}

.ct-field + .ct-field {
    margin-top: 22px;
}

.ct-field label {
    display: block;
    font-size: 12px;
    letter-spacing: 0.18em;
    color: #c9c9c9;
}

.ct-field input,
.ct-field textarea {
    display: block;
    width: 100%;
    margin-top: 10px;
    padding: 8px 0;
    background: transparent;
    border: 0;
    border-bottom: 1px solid #5a5a5a;
    color: var(--paper);
    font-family: inherit;
    font-size: 15px;
    outline: none;
}

.ct-field input:focus,
.ct-field textarea:focus {
    border-bottom: 3px solid var(--paper);
}

.ct-submit {
    display: inline-block;
    margin-top: 32px;
    padding: 13px 32px;
    background: var(--ink);
    color: var(--paper);
    border: 1px solid var(--paper);
    font-family: inherit;
    font-size: 12px;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    cursor: pointer;
}

.ct-submit:hover,
.ct-submit:focus-visible {
    background: var(--accent);
    border-color: var(--accent);
}

.ct-status {
    margin-top: 16px;
    font-size: 12px;
    color: #a9a9a9;
}

.ct-title-wide {
    max-width: var(--wrap);
    margin: 0 auto;
    padding: 56px var(--gutter) 12px;
    text-transform: none;
    letter-spacing: 0.16em;
}

.ct-copy {
    max-width: 880px;
    margin: 0 auto;
    padding: 0 var(--gutter);
    font-size: 15px;
    color: #1c1c1c;
}

.ct-media {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 40px;
    max-width: var(--wrap);
    margin: 40px auto 0;
    padding: 0 var(--gutter) 40px;
}

.ct-fig-one img {
    aspect-ratio: 12 / 5;
    max-height: 400px;
    object-position: 30% 54%;
}

.ct-fig-two img {
    aspect-ratio: 12 / 5;
    max-height: 400px;
    object-position: 74% 30%;
}

/* --------------------------------------------------------------- 客户端 -- */

.ap-hero {
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-height: 34vh;
    background: var(--ink);
    color: var(--paper);
    padding: 72px var(--gutter);
}

.ap-line {
    max-width: 700px;
    margin-top: 16px;
    font-size: 15px;
    color: #ededed;
}

.ap-title {
    max-width: var(--wrap);
    margin: 0 auto;
    padding: 56px var(--gutter) 12px;
}

.ap-copy {
    max-width: 880px;
    margin: 0 auto;
    padding: 0 var(--gutter);
    font-size: 15px;
    color: #1c1c1c;
}

.ap-copy-gap {
    margin-top: 20px;
}

.ap-copy + .ap-title {
    margin-top: 46px;
}

.ap-split {
    display: grid;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 48px;
    max-width: var(--wrap);
    margin: 28px auto 0;
    padding: 0 var(--gutter);
}

.ap-list {
    grid-column: 1 / 9;
}

.ap-item {
    display: grid;
    grid-template-columns: 52px minmax(0, 1fr);
    column-gap: 18px;
    padding: 18px 0;
    border-bottom: 1px solid var(--hair);
}

.ap-no {
    font-size: 12px;
    letter-spacing: 0.2em;
    color: var(--mute);
    padding-top: 3px;
}

.ap-name {
    grid-column: 2 / 3;
}

.ap-item .ap-line {
    grid-column: 2 / 3;
    margin-top: 6px;
    font-size: 14px;
    color: #4a4a4a;
}

.ap-figure-square {
    grid-column: 9 / 13;
    margin: 0;
}

.ap-figure-square img {
    aspect-ratio: 1 / 1;
    max-height: 420px;
    object-position: 42% 34%;
}

.ap-cap {
    margin-top: 10px;
    font-size: 12px;
    color: var(--mute);
}

.ap-download {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1px;
    max-width: var(--wrap);
    margin: 28px auto 0;
    padding: 0 var(--gutter);
    background: var(--hair);
}

.ap-block {
    background: var(--paper);
    padding: 28px 24px 26px 0;
}

.ap-plat {
    font-size: 18px;
    letter-spacing: 0.06em;
}

.ap-block .ap-line {
    margin-top: 12px;
    font-size: 14px;
    color: #4a4a4a;
}

.ap-link {
    display: inline-block;
    margin-top: 20px;
    font-size: 13px;
    border-bottom: 1px solid var(--line);
    padding-bottom: 3px;
}

.ap-link:hover,
.ap-link:focus-visible {
    color: var(--accent);
    border-bottom-color: var(--accent);
}

.ap-figure-wide {
    max-width: var(--wrap);
    margin: 40px auto 0;
    padding: 0 var(--gutter);
}

.ap-figure-wide img {
    aspect-ratio: 16 / 7;
    max-height: 420px;
    object-position: 56% 44%;
}

.ap-faq {
    max-width: var(--wrap);
    margin: 28px auto 0;
    padding: 0 var(--gutter) 40px;
    border-top: 1px solid var(--line);
}

.ap-qa {
    display: grid;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 24px;
    padding: 18px 0;
    border-bottom: 1px solid var(--hair);
}

.ap-qa dt {
    grid-column: 1 / 5;
    font-size: 15px;
    font-weight: 700;
}

.ap-qa dd {
    grid-column: 5 / 13;
    font-size: 14px;
    color: #4a4a4a;
}

/* --------------------------------------------------------------- 页脚 --- */

.bw-foot {
    background: var(--ink);
    color: var(--paper);
    border-top: 1px solid var(--line);
    padding: 56px var(--gutter) 40px;
}

.foot-links,
.foot-meta {
    max-width: var(--wrap);
    margin: 0 auto;
}

.foot-row {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1px;
}

.foot-row + .foot-row {
    margin-top: 14px;
}

.foot-row a {
    display: inline-block;
    font-size: 12px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    padding: 4px 0;
    border-bottom: 1px solid transparent;
}

.foot-row a:hover,
.foot-row a:focus-visible {
    border-bottom-color: var(--paper);
}

.foot-meta {
    margin-top: 40px;
    padding-top: 24px;
    border-top: 1px solid var(--line);
}

.foot-brand {
    font-size: 14px;
    letter-spacing: 0.16em;
}

.foot-note,
.foot-copy {
    margin-top: 10px;
    font-size: 12px;
    color: #a9a9a9;
}

/* ----------------------------------------------------------- 响应式 --- */

@media (max-width: 1100px) {
    .play-left {
        grid-column: 1 / 6;
    }

    .play-list {
        grid-column: 6 / 13;
    }

    .ab-para {
        max-width: 78%;
    }
}

@media (max-width: 900px) {
    :root {
        --gutter: 28px;
        --band: 64px;
    }

    .menu-toggle {
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }

    .js-on .bw-nav {
        display: none;
    }

    .js-on .bw-nav.is-open {
        display: block;
    }

    .bw-nav {
        flex: 1 1 100%;
        order: 3;
    }

    .nav-list {
        flex-direction: column;
        align-items: flex-start;
        gap: 0;
    }

    .nav-list li {
        width: 100%;
        border-top: 1px solid var(--line);
    }

    .nav-list a {
        display: block;
        padding: 12px 0;
        border-bottom: 0;
    }

    .hdr-inner {
        flex-wrap: wrap;
        padding-top: 10px;
        padding-bottom: 10px;
    }

    .collage {
        display: block;
        background: var(--paper);
    }

    .c-cell {
        margin-bottom: 1px;
    }

    .c-main img {
        height: 240px;
    }

    .c-a img,
    .c-b img,
    .c-c img {
        height: 150px;
    }

    .c-d img {
        height: 170px;
    }

    .collage-title {
        position: static;
        left: auto;
        right: auto;
        bottom: auto;
        margin: 0;
        padding: 22px 20px 24px;
    }

    .collage-title h1 {
        font-size: 22px;
    }

    .band-head {
        flex-direction: column;
        gap: 12px;
    }

    .band-lead {
        text-align: left;
    }

    .play-left,
    .play-list {
        grid-column: 1 / -1;
    }

    .play-list {
        border-left: 0;
        border-top: 1px solid var(--line);
        padding-left: 0;
        padding-top: 12px;
    }

    .mx-figure,
    .mx-copy {
        grid-column: 1 / -1;
    }

    .mx-figure img {
        aspect-ratio: 3 / 4;
    }

    .ed-three {
        grid-template-columns: minmax(0, 1fr);
        gap: 36px;
    }

    .ab-para,
    .ab-pair .ab-para {
        max-width: 100%;
    }

    .ab-pair {
        grid-template-columns: minmax(0, 1fr);
        gap: 28px;
    }

    .ab-pair .ab-figure,
    .ab-pair .ab-para {
        grid-column: 1 / -1;
    }

    .ab-numbers {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .ct-band {
        grid-template-columns: minmax(0, 1fr);
        gap: 48px;
        padding: 56px var(--gutter);
    }

    .ct-notes,
    .ct-form {
        grid-column: 1 / -1;
    }

    .ap-list {
        grid-column: 1 / -1;
    }

    .ap-figure-square {
        grid-column: 1 / -1;
    }

    .ap-figure-square img {
        aspect-ratio: 16 / 9;
    }

    .nw-row {
        grid-template-columns: minmax(0, 1fr);
        gap: 8px;
    }

    .faq-row dt,
    .faq-row dd,
    .pd-row dt,
    .pd-row dd,
    .ap-qa dt,
    .ap-qa dd {
        grid-column: 1 / -1;
    }
}

@media (max-width: 768px) {
    .mx-split,
    .ap-split,
    .ct-band {
        grid-template-columns: minmax(0, 1fr);
        gap: 26px;
    }

    .g-six {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .pd-grid {
        grid-template-columns: minmax(0, 1fr);
    }

    .ap-download {
        grid-template-columns: minmax(0, 1fr);
    }

    .ap-block {
        padding-right: 0;
    }

    .nw-gallery,
    .ct-media {
        grid-template-columns: minmax(0, 1fr);
        gap: 28px;
    }

    .nw-fig-two img,
    .ct-fig-two img {
        aspect-ratio: 3 / 2;
    }

    .foot-row {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 10px 18px;
    }

    body h1 {
        font-size: 26px;
    }

    .nw-headline {
        font-size: 21px;
    }

    .svc-row {
        grid-template-columns: minmax(0, 1fr);
    }

    .ab-numbers {
        grid-template-columns: minmax(0, 1fr);
    }
}

@media (max-width: 420px) {
    :root {
        --gutter: 18px;
    }

    .brand {
        font-size: 16px;
        letter-spacing: 0.18em;
    }

    .tools {
        gap: 8px;
    }

    .tool {
        width: 30px;
        height: 30px;
    }

    .collage-title h1 {
        font-size: 22px;
    }

    .ab-num b {
        font-size: 34px;
    }
}