:root {
    --ink: #0a0a0e;
    --ink-2: #0f1016;
    --panel: #14151d;
    --panel-2: #191b24;
    --line: rgba(255, 255, 255, 0.09);
    --line-2: rgba(255, 255, 255, 0.16);
    --text: #f3f4f8;
    --muted: #9396a6;
    --muted-2: #6c6f80;
    --red: #ff2e54;
    --red-d: #d61a3e;
    --blue: #2f7bff;
    --blue-l: #5b9bff;
    --amber: #ffc24b;
    --purple: #9b6bff;
    --mono: ui-monospace, "SF Mono", "JetBrains Mono", "Roboto Mono", Menlo, Consolas, monospace;
    --sans: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Helvetica Neue", Arial, sans-serif;
    --wrap: 1200px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--sans);
    background: var(--ink);
    color: var(--text);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
.wrap { width: min(100% - 40px, var(--wrap)); margin-inline: auto; }
.brk { display: none; }
@media (min-width: 760px) { .brk { display: inline; } }

/* ===== 顶部弹幕滚动条 ===== */
.ticker {
    background: var(--red);
    color: #fff;
    overflow: hidden;
    height: 34px;
    display: flex;
    align-items: center;
    position: relative;
    z-index: 60;
}
.ticker-track {
    display: flex;
    gap: 48px;
    white-space: nowrap;
    font-family: var(--mono);
    font-size: 12.5px;
    letter-spacing: 1px;
    animation: ticker 26s linear infinite;
    will-change: transform;
}
.ticker-track span { opacity: .92; }
.ticker-track span::before { content: "// "; opacity: .55; }
@keyframes ticker { from { transform: translateX(0); } to { transform: translateX(-50%); } }

/* ===== 导航 ===== */
.nav {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(10, 10, 14, 0.82);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--line);
}
.nav-row { display: flex; align-items: center; justify-content: space-between; height: 66px; }
.logo { display: flex; align-items: center; gap: 11px; }
.logo-txt { font-weight: 800; font-size: 18px; letter-spacing: 1px; display: flex; flex-direction: column; line-height: 1.05; }
.logo-txt i { font-style: normal; font-family: var(--mono); font-size: 9.5px; letter-spacing: 3px; color: var(--muted-2); font-weight: 500; }
.nav-menu { display: flex; align-items: center; gap: 30px; }
.nav-menu a { font-size: 14.5px; color: var(--muted); transition: color .2s; }
.nav-menu a:hover { color: var(--text); }
.nav-btn {
    color: #fff !important; background: var(--red); padding: 8px 18px; border-radius: 4px;
    font-weight: 700; font-size: 14px;
}
.nav-btn:hover { background: var(--red-d); }
.burger { display: none; flex-direction: column; gap: 5px; background: none; border: 0; cursor: pointer; padding: 6px; }
.burger span { width: 24px; height: 2px; background: var(--text); transition: .3s; }

/* ===== 按钮 ===== */
.btn {
    display: inline-flex; align-items: center; justify-content: center;
    font-weight: 700; font-size: 15px; padding: 14px 26px; border-radius: 5px;
    transition: transform .15s, background .2s, color .2s, border-color .2s; cursor: pointer;
}
.btn-solid { background: var(--red); color: #fff; }
.btn-solid:hover { background: var(--red-d); transform: translateY(-2px); }
.btn-line { border: 1px solid var(--line-2); color: var(--text); }
.btn-line:hover { border-color: var(--text); transform: translateY(-2px); }
.btn-wide { width: 100%; padding: 16px; }

/* ===== HERO ===== */
.hero { position: relative; padding: 70px 0 90px; overflow: hidden; }
.hero-bg {
    position: absolute; inset: 0; z-index: 0; pointer-events: none;
    background:
        radial-gradient(60% 50% at 85% 0%, rgba(47,123,255,.16), transparent 70%),
        radial-gradient(50% 50% at 5% 30%, rgba(255,46,84,.14), transparent 70%);
}
.hero-bg::after {
    content: ""; position: absolute; inset: 0;
    background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px);
    background-size: 54px 54px; mask-image: radial-gradient(70% 70% at 50% 40%, #000, transparent 100%);
    opacity: .5;
}
.hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: 1.05fr 1fr; gap: 56px; align-items: center; }
.kicker { font-family: var(--mono); font-size: 12.5px; letter-spacing: 1.5px; color: var(--muted); display: flex; align-items: center; gap: 9px; text-transform: uppercase; }
.kicker .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--red); box-shadow: 0 0 0 4px rgba(255,46,84,.18); }
.hero-copy h1 { font-size: clamp(34px, 5.4vw, 62px); line-height: 1.12; font-weight: 800; letter-spacing: 1px; margin: 20px 0 22px; }
.hl-red { color: var(--red); }
.hl-blue { color: var(--blue-l); }
.lead { color: var(--muted); font-size: 16.5px; max-width: 540px; }
.hero-cta { display: flex; gap: 14px; margin: 32px 0 38px; flex-wrap: wrap; }
.hero-meta { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-meta li { border-left: 2px solid var(--red); padding-left: 14px; }
.hero-meta li:nth-child(2) { border-color: var(--blue); }
.hero-meta li:nth-child(3) { border-color: var(--amber); }
.hero-meta b { display: block; font-size: 18px; }
.hero-meta span { font-size: 12.5px; color: var(--muted-2); font-family: var(--mono); }

/* ===== 模拟直播间 ===== */
.live {
    background: var(--panel); border: 1px solid var(--line); border-radius: 14px; overflow: hidden;
    box-shadow: 0 30px 70px -30px rgba(0,0,0,.8);
}
.live-bar { display: flex; align-items: center; gap: 10px; padding: 12px 16px; border-bottom: 1px solid var(--line); background: var(--panel-2); }
.live-badge { display: inline-flex; align-items: center; gap: 6px; background: var(--red); color: #fff; font-family: var(--mono); font-size: 11px; font-weight: 700; padding: 3px 9px; border-radius: 3px; letter-spacing: 1px; }
.live-badge i { width: 6px; height: 6px; border-radius: 50%; background: #fff; animation: blink 1.2s infinite; }
@keyframes blink { 50% { opacity: .25; } }
.live-room { font-size: 13px; color: var(--muted); }
.live-num { margin-left: auto; font-family: var(--mono); font-size: 12px; color: var(--muted-2); }
.live-screen { position: relative; aspect-ratio: 16 / 11; background: radial-gradient(120% 90% at 50% 0%, #1b2030, #0c0d14 70%); overflow: hidden; }
.pk { position: absolute; top: 14px; left: 14px; right: 14px; display: flex; align-items: center; justify-content: space-between; z-index: 3; }
.pk-side { display: flex; align-items: baseline; gap: 8px; }
.pk-side span { font-size: 13px; font-weight: 700; }
.pk-side b { font-family: var(--mono); font-size: 22px; }
.pk-side.red { color: var(--red); }
.pk-side.blue { color: var(--blue-l); }
.pk-vs { font-family: var(--mono); font-weight: 800; font-size: 13px; color: var(--muted); }
.pk-bar { position: absolute; top: 50px; left: 14px; right: 14px; height: 8px; border-radius: 5px; background: linear-gradient(90deg, var(--blue) 0 100%); overflow: hidden; z-index: 3; }
.pk-fill { height: 100%; width: 50%; background: var(--red); box-shadow: 2px 0 8px rgba(255,46,84,.6); transition: width .9s cubic-bezier(.5,0,.2,1); }
.danmu-layer { position: absolute; inset: 70px 0 56px 0; z-index: 2; pointer-events: none; }
.danmu {
    position: absolute; right: -40%; white-space: nowrap; font-size: 13px; font-weight: 600;
    padding: 4px 11px; border-radius: 20px; background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.1);
    backdrop-filter: blur(2px); color: #fff;
}
.danmu.red { color: #ffb4c2; border-color: rgba(255,46,84,.5); }
.danmu.blue { color: #bcd4ff; border-color: rgba(47,123,255,.5); }
.live-stage { position: absolute; inset: 0; display: grid; place-items: center; z-index: 1; }
.orb { position: absolute; width: 120px; height: 120px; border-radius: 50%; filter: blur(28px); opacity: .55; }
.orb.red { background: var(--red); left: 18%; bottom: 18%; animation: float1 6s ease-in-out infinite; }
.orb.blue { background: var(--blue); right: 18%; bottom: 26%; animation: float1 7s ease-in-out infinite reverse; }
@keyframes float1 { 50% { transform: translateY(-18px); } }
.stage-tip { position: relative; font-size: 12.5px; color: var(--muted); font-family: var(--mono); background: rgba(0,0,0,.35); padding: 5px 12px; border-radius: 20px; }
.live-input { display: flex; align-items: center; gap: 10px; padding: 12px 16px; border-top: 1px solid var(--line); background: var(--panel-2); }
.input-fake { flex: 1; font-size: 13.5px; color: var(--muted-2); border: 1px solid var(--line); border-radius: 20px; padding: 7px 14px; }
.input-fake::after { content: "▍"; animation: blink 1s infinite; color: var(--red); }
.send { background: var(--blue); color: #fff; font-size: 13px; font-weight: 700; padding: 7px 16px; border-radius: 20px; }

/* ===== 通用 block ===== */
.block { padding: 100px 0; }
.block-dark { background: var(--ink-2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.head { max-width: 720px; margin-bottom: 54px; }
.head-left { max-width: 460px; margin-bottom: 0; }
.sub { font-family: var(--mono); font-size: 13px; letter-spacing: 2px; color: var(--red); text-transform: uppercase; margin-bottom: 16px; }
.head h2 { font-size: clamp(26px, 3.6vw, 42px); line-height: 1.22; font-weight: 800; letter-spacing: .5px; }
.head-desc { color: var(--muted); margin-top: 18px; font-size: 16px; }

/* ===== 业务能力 ===== */
.cap-list { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border: 1px solid var(--line); border-radius: 12px; overflow: hidden; }
.cap { position: relative; padding: 34px 26px 30px; border-right: 1px solid var(--line); transition: background .25s; }
.cap:last-child { border-right: 0; }
.cap:hover { background: var(--panel); }
.cap-no { font-family: var(--mono); font-size: 12px; color: var(--muted-2); position: absolute; top: 18px; right: 20px; }
.cap-ic { width: 50px; height: 50px; border-radius: 10px; display: grid; place-items: center; color: var(--red); background: rgba(255,46,84,.1); margin-bottom: 20px; }
.cap:nth-child(2) .cap-ic { color: var(--amber); background: rgba(255,194,75,.1); }
.cap:nth-child(3) .cap-ic { color: var(--blue-l); background: rgba(47,123,255,.12); }
.cap:nth-child(4) .cap-ic { color: var(--purple); background: rgba(155,107,255,.12); }
.cap h3 { font-size: 19px; margin-bottom: 10px; }
.cap p { color: var(--muted); font-size: 14.5px; }

/* ===== 玩法矩阵 ===== */
.forms { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 30px; }
.forms span { font-family: var(--mono); font-size: 13px; color: var(--muted); border: 1px solid var(--line); padding: 8px 16px; border-radius: 30px; }
.matrix { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.mx { background: var(--panel); border: 1px solid var(--line); border-top: 3px solid var(--red); border-radius: 10px; padding: 24px 22px 22px; transition: transform .25s, border-color .25s; }
.mx-amber { border-top-color: var(--amber); }
.mx-blue { border-top-color: var(--blue); }
.mx-purple { border-top-color: var(--purple); }
.mx:hover { transform: translateY(-6px); }
.mx-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 18px; }
.mx-tag { font-size: 12px; padding: 3px 10px; border-radius: 4px; background: rgba(255,255,255,.06); color: var(--muted); }
.mx-id { font-family: var(--mono); font-size: 11px; color: var(--muted-2); }
.mx h3 { font-size: 22px; margin-bottom: 10px; }
.mx p { color: var(--muted); font-size: 14.5px; min-height: 66px; }
.mx-foot { margin-top: 14px; padding-top: 14px; border-top: 1px solid var(--line); font-family: var(--mono); font-size: 11.5px; color: var(--muted-2); }

/* ===== 解决方案 ===== */
.steps { display: grid; gap: 0; border-top: 1px solid var(--line); }
.steps li { display: grid; grid-template-columns: 90px 220px 1fr; gap: 24px; align-items: center; padding: 26px 8px; border-bottom: 1px solid var(--line); transition: padding-left .25s, background .25s; }
.steps li:hover { background: var(--panel); padding-left: 22px; }
.step-no { font-family: var(--mono); font-size: 34px; font-weight: 700; color: var(--red); }
.steps li:nth-child(2) .step-no { color: var(--amber); }
.steps li:nth-child(3) .step-no { color: var(--blue-l); }
.steps li:nth-child(4) .step-no { color: var(--purple); }
.steps li:nth-child(5) .step-no { color: var(--red); }
.steps h3 { font-size: 20px; }
.steps p { color: var(--muted); font-size: 15px; }

/* ===== 为什么选我们 ===== */
.why-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 50px; align-items: center; }
.creed { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
.creed span { font-size: 13.5px; padding: 8px 14px; border: 1px solid var(--line-2); border-radius: 4px; }
.why-cards { display: grid; gap: 16px; }
.wc { display: grid; grid-template-columns: 64px 1fr; row-gap: 4px; column-gap: 20px; align-items: center; background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 22px 24px; }
.wc b { grid-row: 1 / 3; width: 56px; height: 56px; border-radius: 12px; display: grid; place-items: center; font-size: 24px; font-weight: 800; color: #fff; background: var(--red); }
.wc:nth-child(2) b { background: var(--blue); }
.wc:nth-child(3) b { background: var(--amber); color: #1a1300; }
.wc h3 { font-size: 18px; }
.wc p { color: var(--muted); font-size: 14.5px; }

/* ===== 团队 ===== */
.team { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.tm { position: relative; padding: 26px 24px; border: 1px solid var(--line); border-radius: 10px; transition: border-color .25s, transform .25s; }
.tm:hover { border-color: var(--line-2); transform: translateY(-4px); }
.tm-no { font-family: var(--mono); font-size: 12px; color: var(--red); }
.tm h3 { font-size: 19px; margin: 8px 0 4px; }
.tm p { color: var(--muted); font-size: 14px; }

/* ===== 愿景 ===== */
.vision { padding: 90px 0; background: linear-gradient(120deg, var(--red-d), #7a1530 45%, #16244f 100%); position: relative; overflow: hidden; }
.vision::before { content: "PK"; position: absolute; right: -10px; bottom: -40px; font-family: var(--mono); font-size: 240px; font-weight: 800; color: rgba(255,255,255,.05); }
.vision-row { position: relative; z-index: 1; }
.vision-kicker { font-family: var(--mono); font-size: 13px; letter-spacing: 2px; color: rgba(255,255,255,.8); margin-bottom: 18px; }
.vision h2 { font-size: clamp(24px, 3.4vw, 38px); line-height: 1.3; font-weight: 800; }
.vision-desc { margin-top: 20px; color: rgba(255,255,255,.82); font-size: 16.5px; max-width: 760px; }

/* ===== 联系 ===== */
.contact { display: grid; grid-template-columns: 1.1fr 1fr; gap: 50px; align-items: center; }
.contact-l h2 { font-size: clamp(26px, 3.4vw, 40px); line-height: 1.2; font-weight: 800; margin-top: 14px; }
.contact-r { display: grid; gap: 14px; }
.contact-item { display: block; background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 18px 22px; transition: border-color .2s; }
a.contact-item:hover { border-color: var(--red); }
.ci-k { display: block; font-family: var(--mono); font-size: 11.5px; letter-spacing: 1px; color: var(--muted-2); margin-bottom: 6px; }
.ci-v { font-size: 17px; font-weight: 700; word-break: break-all; }

/* ===== 页脚 ===== */
.foot { border-top: 1px solid var(--line); padding: 40px 0; }
.foot-row { display: flex; justify-content: space-between; align-items: center; gap: 24px; flex-wrap: wrap; }
.foot-name { font-weight: 800; font-size: 16px; }
.foot-tip { color: var(--muted); font-size: 13.5px; margin-top: 6px; }
.foot-meta { text-align: right; color: var(--muted-2); font-size: 12.5px; font-family: var(--mono); }
.foot-meta a:hover { color: var(--red); }

/* ===== 滚动显现 ===== */
.up { opacity: 0; transform: translateY(24px); transition: opacity .6s ease, transform .6s ease; }
.up.in { opacity: 1; transform: none; }

/* ===== 响应式 ===== */
@media (max-width: 980px) {
    .hero-grid { grid-template-columns: 1fr; gap: 44px; }
    .cap-list { grid-template-columns: repeat(2, 1fr); }
    .cap:nth-child(2) { border-right: 0; }
    .cap:nth-child(1), .cap:nth-child(2) { border-bottom: 1px solid var(--line); }
    .matrix { grid-template-columns: repeat(2, 1fr); }
    .why-grid { grid-template-columns: 1fr; gap: 34px; }
    .team { grid-template-columns: repeat(2, 1fr); }
    .contact { grid-template-columns: 1fr; gap: 34px; }
    .mx p { min-height: 0; }
}
@media (max-width: 720px) {
    .nav-menu {
        position: fixed; inset: 100px 0 auto 0; flex-direction: column; gap: 0; align-items: stretch;
        background: var(--ink-2); border-bottom: 1px solid var(--line); transform: translateY(-150%); transition: transform .3s; padding: 8px 0;
    }
    .nav-menu.open { transform: none; }
    .nav-menu a { padding: 15px 24px; }
    .nav-btn { margin: 8px 24px; text-align: center; }
    .burger { display: flex; }
    .burger.x span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
    .burger.x span:nth-child(2) { opacity: 0; }
    .burger.x span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
    .block { padding: 70px 0; }
    .steps li { grid-template-columns: 60px 1fr; grid-template-areas: "no title" "no desc"; row-gap: 2px; }
    .step-no { grid-area: no; font-size: 26px; }
    .steps h3 { grid-area: title; }
    .steps p { grid-area: desc; }
    .foot-row, .foot-meta { text-align: left; }
}
@media (max-width: 480px) {
    .cap-list { grid-template-columns: 1fr; }
    .cap { border-right: 0; border-bottom: 1px solid var(--line); }
    .cap:last-child { border-bottom: 0; }
    .matrix, .team { grid-template-columns: 1fr; }
}