/**
 * 项目名称：梯子游戏官方APP
 * 文件功能：全站视觉样式与响应式布局
 * 版本：1.0
 */

:root{--bg:#080808;--surface:#111;--surface-2:#181818;--gold:#d4af37;--gold-light:#f5d76e;--white:#fff;--text:#dedede;--muted:#969696;--line:rgba(255,255,255,.11);--line-gold:rgba(212,175,55,.35);--container:1200px;--header:82px;--ease:cubic-bezier(.2,.7,.2,1)}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,"PingFang SC","Microsoft YaHei",Arial,sans-serif;font-size:16px;line-height:1.7;letter-spacing:0;overflow-x:hidden}
body.menu-open{overflow:hidden}a{color:inherit;text-decoration:none}img{display:block;max-width:100%}button{font:inherit}.container{width:min(calc(100% - 48px),var(--container));margin-inline:auto}.skip-link{position:fixed;z-index:999;top:10px;left:10px;padding:10px 16px;background:var(--gold-light);color:#080808;transform:translateY(-150%)}.skip-link:focus{transform:none}.site-header{position:fixed;z-index:100;inset:0 0 auto;height:var(--header);border-bottom:1px solid transparent;transition:background .25s,border-color .25s}.site-header.is-scrolled{background:rgba(8,8,8,.88);border-color:var(--line);backdrop-filter:blur(16px)}.header-inner{height:100%;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:12px;min-height:48px}.brand-mark{width:39px;height:39px;display:grid;place-items:center;border:1px solid var(--gold);transform:rotate(45deg)}.brand-mark span{color:var(--gold-light);font-weight:700;font-family:Georgia,serif;font-size:20px;transform:rotate(-45deg)}.brand-copy{display:grid;line-height:1.15}.brand-copy strong{color:var(--white);font-size:17px}.brand-copy small{margin-top:5px;color:var(--gold);font-size:9px;letter-spacing:2px}.site-nav{display:flex;align-items:center;gap:30px}.site-nav a{position:relative;color:#bdbdbd;font-size:14px;transition:color .2s}.site-nav a:after{content:"";position:absolute;left:0;right:100%;bottom:-11px;height:1px;background:var(--gold);transition:right .25s}.site-nav a:hover,.site-nav a:focus-visible,.site-nav a.is-active{color:#fff}.site-nav a:hover:after,.site-nav a:focus-visible:after,.site-nav a.is-active:after{right:0}.menu-toggle{display:none;width:44px;height:44px;border:0;background:transparent;padding:10px;cursor:pointer}.menu-toggle span{display:block;width:24px;height:1px;margin:6px auto;background:#fff;transition:.25s}
.hero{position:relative;min-height:700px;height:min(780px,100svh);overflow:hidden;background:radial-gradient(circle at 73% 42%,rgba(212,175,55,.09),transparent 28%),#080808}.hero:before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,#080808 0%,rgba(8,8,8,.97) 38%,rgba(8,8,8,.35) 72%,#080808 100%)}.hero-grid{position:absolute;inset:0;opacity:.15;background-image:linear-gradient(rgba(255,255,255,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.07) 1px,transparent 1px);background-size:74px 74px;mask-image:linear-gradient(90deg,transparent,black 58%,transparent)}.hero-inner{position:relative;height:100%;display:grid;grid-template-columns:1.04fr .96fr;align-items:center;padding-top:var(--header)}.hero-copy{z-index:3;max-width:650px}.eyebrow,.section-index{display:inline-flex;align-items:center;color:var(--gold);font-size:11px;font-weight:600;letter-spacing:2.5px}.eyebrow i{width:32px;height:1px;margin-right:12px;background:var(--gold)}.hero h1{margin:22px 0 4px;color:var(--white);font-size:clamp(46px,5.2vw,76px);line-height:1.12;font-weight:650;letter-spacing:0}.hero-lead{margin:0;color:var(--gold-light);font-family:Georgia,"Songti SC",serif;font-size:clamp(25px,3vw,40px)}.hero-summary{max-width:530px;margin:25px 0 30px;color:#aaa;font-size:16px}.hero-actions,.closing-actions{display:flex;gap:12px}.button{min-height:48px;padding:11px 22px;display:inline-flex;align-items:center;justify-content:space-between;gap:25px;border:1px solid transparent;font-size:14px;font-weight:600;cursor:pointer;transition:transform .2s,background .2s,border-color .2s,color .2s}.button:hover{transform:translateY(-2px)}.button:focus-visible,.site-nav a:focus-visible,.text-link:focus-visible,.article-row:focus-visible,.tutorial-grid a:focus-visible{outline:2px solid var(--gold-light);outline-offset:4px}.button-gold{min-width:178px;background:var(--gold);color:#080808}.button-gold:hover{background:var(--gold-light)}.button-outline{min-width:160px;border-color:rgba(255,255,255,.35);color:#fff}.button-outline:hover{border-color:var(--gold);color:var(--gold-light)}.hero-facts{display:flex;margin:42px 0 0}.hero-facts div{min-width:145px;padding-right:24px;border-right:1px solid var(--line)}.hero-facts div+div{padding-left:24px}.hero-facts dt{color:#777;font-size:11px}.hero-facts dd{margin:2px 0 0;color:#ddd;font-size:13px}.device-stage{position:relative;height:560px}.device-stage:before{content:"";position:absolute;width:360px;height:360px;left:50%;top:48%;border-radius:50%;border:1px solid rgba(212,175,55,.16);transform:translate(-50%,-50%);box-shadow:0 0 120px rgba(212,175,55,.08)}.orbit{position:absolute;left:50%;top:48%;border:1px solid rgba(212,175,55,.25);border-radius:50%;transform:translate(-50%,-50%) rotate(-18deg)}.orbit-one{width:460px;height:210px}.orbit-two{width:520px;height:310px;opacity:.35}.phone{position:absolute;z-index:2;left:50%;top:50%;width:254px;height:500px;padding:9px;border:1px solid #70602d;border-radius:38px;background:linear-gradient(145deg,#383838,#0a0a0a 40%,#29230f);box-shadow:0 40px 80px rgba(0,0,0,.7),0 0 30px rgba(212,175,55,.09);transform:translate(-50%,-50%) rotate(5deg)}.phone:after{content:"";position:absolute;inset:1px;border:1px solid rgba(255,255,255,.18);border-radius:36px;pointer-events:none}.phone-screen{height:100%;overflow:hidden;border-radius:30px;background:radial-gradient(circle at 70% 22%,rgba(212,175,55,.2),transparent 28%),linear-gradient(155deg,#1c1b18,#090909 60%);padding:70px 19px 18px}.phone-top{position:absolute;z-index:2;left:28px;right:28px;top:20px;display:flex;justify-content:space-between;color:#bbb;font-size:9px}.phone-top i{width:66px;height:18px;margin-top:-7px;border-radius:12px;background:#050505}.app-heading{display:grid}.mini-mark{width:44px;height:44px;margin-bottom:22px;display:grid;place-items:center;border:1px solid var(--gold);color:var(--gold-light);font-family:Georgia,serif;font-size:23px;transform:rotate(45deg)}.mini-mark::first-letter{transform:rotate(-45deg)}.app-heading small,.app-panel span{color:#777;font-size:8px;letter-spacing:2px}.app-heading strong{margin-top:3px;color:#fff;font-size:22px}.app-panel{position:relative;margin-top:28px;padding:17px;border:1px solid rgba(212,175,55,.25);background:rgba(255,255,255,.035)}.app-panel strong{display:block;margin-top:7px;color:#eee;font-size:13px}.app-panel i{display:block;width:100%;height:2px;margin-top:17px;background:linear-gradient(90deg,var(--gold) 68%,#333 68%)}.app-stats{display:grid;grid-template-columns:1fr 1fr;gap:7px;margin-top:9px}.app-stats span{padding:14px 10px;background:rgba(255,255,255,.04);color:#777;font-size:8px}.app-stats b{display:block;color:#ddd;font-size:13px}.app-nav{position:absolute;bottom:30px;left:40px;right:40px;display:flex;justify-content:space-around}.app-nav i{width:12px;height:12px;border:1px solid #555;border-radius:50%}.app-nav i:first-child{border-color:var(--gold);background:var(--gold)}.floating-label{position:absolute;z-index:3;padding:12px 18px;border-left:2px solid var(--gold);background:rgba(15,15,15,.88);box-shadow:0 15px 30px rgba(0,0,0,.4);backdrop-filter:blur(10px)}.floating-label small{display:block;color:#777;font-size:8px;letter-spacing:2px}.floating-label strong{display:block;margin-top:2px;color:#eee;font-size:12px}.label-version{left:4%;top:22%}.label-system{right:0;bottom:24%}.scroll-cue{position:absolute;z-index:4;left:50%;bottom:23px;display:flex;flex-direction:column;align-items:center;color:#666;font-size:8px;letter-spacing:2px;transform:translateX(-50%)}.scroll-cue span{width:1px;height:26px;margin-bottom:7px;background:linear-gradient(var(--gold),transparent)}
.section{padding:110px 0}.section-heading{margin-bottom:48px}.section-heading h2{margin:8px 0 0;color:#fff;font-size:clamp(30px,3.4vw,48px);line-height:1.2;font-weight:560}.section-heading>p{max-width:520px;margin:15px 0 0;color:#929292}.split-heading{display:flex;align-items:end;justify-content:space-between;gap:60px}.split-heading>p{margin:0 0 4px}.feature-grid{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:1px;background:var(--line)}.feature{position:relative;min-height:260px;padding:38px;background:#101010}.feature-main{grid-row:span 2;min-height:521px;padding:48px;background:radial-gradient(circle at 30% 80%,rgba(212,175,55,.08),transparent 32%),#151515}.feature-number{color:#5d5d5d;font-family:Georgia,serif;font-size:12px}.feature h3{margin:46px 0 12px;color:#fff;font-size:21px}.feature-main h3{margin-top:110px;font-size:30px}.feature p{margin:0;color:#909090;font-size:14px}.feature-main p{max-width:500px;font-size:16px}.feature a{position:absolute;left:48px;bottom:45px;color:var(--gold-light);font-size:13px}.download-section{background:#111}.download-list{border-top:1px solid var(--line)}.download-item{display:grid;grid-template-columns:72px 1fr auto;align-items:center;gap:26px;padding:26px 8px;border-bottom:1px solid var(--line);transition:background .2s,padding .2s}.download-item:hover{padding-left:18px;padding-right:18px;background:#161616}.platform-icon{width:58px;height:58px;display:grid;place-items:center;border:1px solid var(--line-gold);color:var(--gold-light);font-family:Georgia,serif;font-size:23px}.download-item small{color:#6e6e6e;font-size:9px;letter-spacing:2px}.download-item h3{display:inline;margin:0 14px 0 0;color:#fff;font-size:22px}.download-item p{display:inline;color:#828282;font-size:13px}.button-small{min-width:145px;min-height:44px;padding:9px 16px;background:var(--gold);color:#080808}.tutorial-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.tutorial-grid article{position:relative;min-height:390px;padding:34px;border:1px solid var(--line);background:linear-gradient(150deg,rgba(255,255,255,.035),transparent);transition:border-color .25s,transform .25s}.tutorial-grid article:hover{border-color:var(--line-gold);transform:translateY(-4px)}.tutorial-tag{color:var(--gold);font-size:9px;letter-spacing:2px}.tutorial-grid h3{margin:28px 0 10px;color:#fff;font-size:23px}.tutorial-grid p{color:#8c8c8c;font-size:14px}.tutorial-grid ol{margin:30px 0 0;padding:0;list-style:none;counter-reset:steps}.tutorial-grid li{padding:8px 0;border-bottom:1px solid var(--line);color:#bbb;font-size:13px;counter-increment:steps}.tutorial-grid li:before{content:"0" counter(steps);margin-right:13px;color:#5d5d5d;font-size:10px}.tutorial-grid article>a{position:absolute;right:30px;bottom:27px;color:var(--gold-light);font-size:12px}.text-link{padding-bottom:4px;border-bottom:1px solid var(--gold);color:var(--gold-light);font-size:13px}.articles-section{background:#0d0d0d}.article-list{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--line);border-left:1px solid var(--line)}.article-row{display:grid;grid-template-columns:42px 1fr auto 20px;align-items:center;gap:15px;min-height:82px;padding:16px 21px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);transition:background .2s}.article-row:hover{background:#171717}.article-no{color:#555;font-size:10px}.article-title{color:#d4d4d4;font-size:14px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.article-meta{color:#676767;font-size:10px}.article-arrow{color:var(--gold);opacity:.4;transition:opacity .2s,transform .2s}.article-row:hover .article-arrow{opacity:1;transform:translate(2px,-2px)}.closing-cta{padding:70px 0;background:var(--gold)}.closing-inner{display:flex;align-items:center;justify-content:space-between;gap:40px}.closing-cta .section-index{color:#4a3a0b}.closing-cta h2{margin:7px 0 0;color:#090909;font-size:38px}.closing-cta p{margin:4px 0 0;color:#463b18}.button-dark{min-width:130px;border-color:#111;background:#111;color:#fff}.button-dark:hover{background:#262626}
.site-footer{padding-top:76px;background:#060606;border-top:1px solid var(--gold)}.footer-grid{display:grid;grid-template-columns:1.7fr .8fr .9fr 1.2fr;gap:58px;padding-bottom:60px}.site-footer h2{margin:0 0 20px;color:#fff;font-size:14px}.footer-brand h2{margin:8px 0 2px;font-size:24px}.footer-kicker{color:var(--gold);font-size:9px;letter-spacing:3px}.footer-brand p,.footer-note p{margin:0;color:#797979;font-size:13px}.footer-status{display:inline-flex;align-items:center;gap:8px;margin-top:27px;color:#8f8f8f;font-size:11px}.footer-status i{width:6px;height:6px;border-radius:50%;background:var(--gold);box-shadow:0 0 8px var(--gold)}.site-footer ul{margin:0;padding:0;list-style:none}.site-footer li+li{margin-top:10px}.site-footer li a{color:#808080;font-size:13px;transition:color .2s}.site-footer li a:hover{color:var(--gold-light)}.copyright{display:flex;justify-content:space-between;padding:22px 0;border-top:1px solid var(--line);color:#515151;font-size:10px;letter-spacing:.5px}.copyright p{margin:0}
@media(max-width:980px){:root{--header:72px}.site-nav{gap:18px}.site-nav a{font-size:13px}.hero-inner{grid-template-columns:1fr 400px}.hero-facts div{min-width:120px}.device-stage{transform:scale(.82)}.feature-grid{grid-template-columns:1fr 1fr}.feature-main{grid-row:auto;grid-column:span 2;min-height:380px}.feature-main h3{margin-top:60px}.article-list{grid-template-columns:1fr}.footer-grid{grid-template-columns:1.5fr 1fr 1fr}.footer-note{grid-column:span 3}.tutorial-grid{gap:10px}.tutorial-grid article{padding:27px}}
@media(max-width:760px){.container{width:min(calc(100% - 32px),var(--container))}.menu-toggle{display:block;position:relative;z-index:3}.menu-toggle[aria-expanded="true"] span:first-child{transform:translateY(7px) rotate(45deg)}.menu-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}.menu-toggle[aria-expanded="true"] span:last-child{transform:translateY(-7px) rotate(-45deg)}.site-nav{position:fixed;inset:0;display:flex;flex-direction:column;align-items:flex-start;justify-content:center;gap:0;padding:90px 32px;background:rgba(8,8,8,.98);opacity:0;visibility:hidden;transform:translateY(-10px);transition:.25s}.site-nav.is-open{opacity:1;visibility:visible;transform:none}.site-nav a{width:100%;padding:13px 0;border-bottom:1px solid var(--line);font-size:20px}.site-nav a:after{display:none}.hero{min-height:820px;height:auto}.hero-inner{display:block;padding-top:125px;padding-bottom:330px}.hero h1{font-size:42px}.hero-lead{font-size:25px}.hero-summary{margin-top:18px;font-size:14px}.hero-actions{flex-wrap:wrap}.hero-facts{display:none}.device-stage{position:absolute;right:-70px;bottom:-100px;width:420px;height:500px;transform:scale(.66);transform-origin:center}.label-version{left:0}.label-system{right:-20px}.scroll-cue{display:none}.section{padding:78px 0}.split-heading{display:block}.split-heading>p{margin-top:16px}.section-heading{margin-bottom:35px}.section-heading h2{font-size:32px}.feature-grid{display:block;background:transparent}.feature{min-height:auto;padding:30px;border-bottom:1px solid var(--line)}.feature-main{min-height:360px}.feature h3,.feature-main h3{margin-top:40px}.feature a{position:static;display:inline-block;margin-top:30px}.download-item{grid-template-columns:52px 1fr;gap:16px;padding:23px 0}.platform-icon{width:48px;height:48px}.download-item p{display:block;margin:3px 0 0}.download-item .button{grid-column:2;width:max-content;margin-top:2px}.tutorial-grid{grid-template-columns:1fr}.tutorial-grid article{min-height:355px}.article-list{display:block;border-left:0}.article-row{grid-template-columns:32px 1fr 18px;border-right:0;padding-inline:10px}.article-meta{display:none}.closing-inner{display:block}.closing-cta h2{font-size:30px}.closing-actions{margin-top:25px}.footer-grid{grid-template-columns:1fr 1fr;gap:42px 25px}.footer-brand,.footer-note{grid-column:span 2}.copyright{display:block}.copyright p+p{margin-top:4px}}
@media(max-width:420px){.hero h1{font-size:36px}.hero-actions .button{width:100%}.device-stage{right:-98px}.tutorial-grid article{padding:26px 22px}.closing-actions{display:grid;grid-template-columns:1fr 1fr}.button-dark{min-width:0}.footer-grid{grid-template-columns:1fr}.footer-brand,.footer-note{grid-column:auto}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}

/* Directory pages */
.channel-page{padding-top:var(--header)}
.breadcrumb{display:flex;align-items:center;gap:10px;padding-top:30px;color:#6f6f6f;font-size:12px}
.breadcrumb a{color:var(--gold)}
.channel-hero{padding:85px 0 90px;border-bottom:1px solid var(--line);background:radial-gradient(circle at 75% 30%,rgba(212,175,55,.09),transparent 25%),linear-gradient(135deg,#111,#080808 65%)}
.channel-hero-inner{max-width:900px}
.channel-hero h1{margin:16px 0 18px;color:#fff;font-size:clamp(38px,5vw,64px);line-height:1.15;font-weight:600}
.channel-hero p{max-width:720px;margin:0;color:#9d9d9d;font-size:17px}
.channel-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--line)}
.channel-card{min-height:280px;padding:42px;background:#111}
.channel-card h2{margin:45px 0 15px;color:#fff;font-size:24px}
.channel-card p{margin:0;color:#969696}
.channel-links{padding:65px 0;background:#111}
.channel-links h2{margin:0 0 24px;color:#fff;font-size:22px}
.channel-link-list{display:flex;flex-wrap:wrap;gap:10px}
.channel-link-list a{min-height:44px;padding:9px 18px;border:1px solid var(--line-gold);color:var(--gold-light);font-size:13px;transition:background .2s,color .2s}
.channel-link-list a:hover{background:var(--gold);color:#080808}
@media(max-width:760px){.channel-hero{padding:60px 0 65px}.channel-hero h1{font-size:36px}.channel-hero p{font-size:15px}.channel-grid{grid-template-columns:1fr}.channel-card{min-height:auto;padding:30px}.channel-card h2{margin-top:32px}.channel-link-list{display:grid;grid-template-columns:1fr 1fr}}