:root{
    --bg:#0B0F17;--deep:#070A11;--panel:#121824;--panel2:#182235;--title:#EEF4FF;--text:#D7E3F4;--muted:#9EB0C9;--quiet:#7386A3;--green:#4F7DF3;--bright:#6C93FF;--darkgreen:#2E53B8;--sand:#F3E7CF;--line:rgba(79,125,243,.18);--line-strong:rgba(79,125,243,.45);--shadow:0 12px 28px rgba(3,7,18,.38);--radius:10px;--max:960px
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;background:var(--bg)}
body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;font-size:15px;line-height:1.7;overflow-x:hidden}
body.locked{overflow:hidden}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
button{cursor:pointer}
img{display:block;max-width:100%}
.skip-link{position:fixed;left:12px;top:-60px;z-index:1000;background:var(--bright);color:#07111F;padding:8px 12px;border-radius:8px;font-weight:700}
.skip-link:focus{top:8px}
.topline{position:fixed;z-index:80;left:0;right:0;top:0;height:20px;background:#05070D;color:var(--bright);font-size:12px;border-bottom:1px solid var(--line)}
.topline-inner,.brandbar-inner,.quicknav-inner,.site-main,.footer-inner{width:min(var(--max),calc(100% - 32px));margin:0 auto}
.topline-inner{height:20px;display:flex;align-items:center;justify-content:space-between}
.text-button{border:0;background:transparent;color:var(--bright);padding:0 4px;min-height:20px}
.brandbar{position:fixed;z-index:79;left:0;right:0;top:20px;height:54px;background:#070A11;border-bottom:1px solid var(--line-strong)}
.brandbar-inner{height:54px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand-link{min-width:94px;display:flex;align-items:center;min-height:44px}
.brand-logo,.drawer-logo,.footer-logo{height:24px;width:auto;object-fit:contain;object-position:center}
.brand-fallback{font-size:16px;font-weight:800;color:var(--title);letter-spacing:.06em}
.brand-actions{display:flex;align-items:center;gap:8px;white-space:nowrap}
.app-link,.menu-open{min-height:44px;display:inline-flex;align-items:center;justify-content:center;padding:0 13px;border-radius:9px;font-size:14px}
.app-link{background:linear-gradient(135deg,#6C93FF 0%,#4F7DF3 55%,#2E53B8 100%);color:#07111F;font-weight:800}
.menu-open{background:#0B0F17;border:1px solid var(--line-strong);color:var(--text)}
.quicknav{position:fixed;z-index:78;left:0;right:0;top:74px;height:44px;background:#070A11;border-bottom:1px solid var(--line)}
.quicknav-inner{height:44px;display:flex;align-items:center;gap:10px}
.quicknav a{width:88px;height:22px;border:1px solid var(--line-strong);border-radius:7px;display:inline-flex;align-items:center;justify-content:center;color:var(--text);font-size:13px;line-height:1}
.quicknav a.active{background:var(--green);color:#07111F;border-color:var(--green);font-weight:800}
.site-main{padding-top:146px;padding-bottom:72px;min-height:70vh}
h1,h2,h3{margin:0;color:var(--title);font-weight:800;letter-spacing:.01em}
h1{font-size:24px;line-height:1.3}
h2{font-size:20px;line-height:1.4}
h3{font-size:16px;line-height:1.45}
p{margin:0 0 12px}
.eyebrow{font-size:12px;color:var(--bright);letter-spacing:.12em;text-transform:uppercase}
.lead{font-size:16px;color:var(--sand);max-width:760px}
.muted{color:var(--muted)}
.quiet{color:var(--quiet)}
.section{margin-top:34px}
.section-head{display:flex;align-items:end;justify-content:space-between;gap:18px;margin-bottom:14px;padding-bottom:9px;border-bottom:1px solid var(--line)}
.section-head p{margin:0;color:var(--muted);max-width:560px}
.btn-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.btn-primary,.btn-secondary{min-height:42px;padding:0 16px;display:inline-flex;align-items:center;justify-content:center;border-radius:9px;font-size:14px;font-weight:800;white-space:nowrap}
.btn-primary{background:linear-gradient(135deg,#6C93FF 0%,#4F7DF3 55%,#2E53B8 100%);color:#07111F}
.btn-secondary{background:#0A101A;color:var(--text);border:1px solid var(--line-strong)}
a:hover,.text-button:hover{filter:brightness(1.09)}
a:focus-visible,button:focus-visible{outline:2px solid var(--sand);outline-offset:3px}
.image-slot{background:#070A11;border:1px solid var(--line);border-radius:10px;overflow:hidden;display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow)}
.image-slot img{width:100%;height:100%;object-fit:contain;object-position:center}
.image-wide{width:100%;height:168px}.image-tall{width:240px;height:320px}.image-short{height:160px}.image-banner{height:200px;width:100%}
.index-intro{border-left:3px solid var(--green);padding:18px 20px;background:linear-gradient(90deg,rgba(42,157,92,.08),transparent);border-radius:0 10px 10px 0}
.index-tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:14px}.index-tabs a{min-height:38px;padding:0 14px;border:1px solid var(--line-strong);border-radius:9px;display:inline-flex;align-items:center;color:var(--text)}
.cut-stage{margin-top:30px;position:relative}.cut-stage .image-slot{height:176px}.cut-copy{margin-top:-24px;margin-left:34px;position:relative;background:var(--panel);border:1px solid var(--line);padding:18px;border-radius:10px;max-width:740px;box-shadow:var(--shadow)}
.narrow-pair{display:grid;grid-template-columns:1.08fr .92fr;gap:14px}.narrow-item{background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:16px}.narrow-item .image-slot{margin-bottom:13px}
.scene-pages{display:grid;grid-template-columns:1fr 1fr;gap:16px}.scene-card{background:var(--panel2);border-left:3px solid var(--darkgreen);padding:16px;border-radius:10px}.scene-card .image-slot{margin-bottom:14px}
.mirror-lines{display:grid;gap:12px}.mirror-line{display:grid;grid-template-columns:120px 1fr;gap:16px;padding:15px 0;border-bottom:1px solid var(--line)}.mirror-line strong{color:var(--sand)}
.lesson-list,.listen-list,.status-list{display:grid;gap:10px;margin-top:14px}.lesson-list article,.listen-list article,.status-list article{background:var(--panel);border:1px solid var(--line);padding:14px 15px;border-radius:10px}.lesson-list h3,.listen-list h3,.status-list h3{margin-bottom:5px}
.wrap-app{display:flex;align-items:flex-start;gap:22px}.wrap-app .copy{flex:1}.app-visuals{margin-left:auto;position:relative;flex:0 0 240px}.app-visuals .app-icon{position:absolute;right:12px;bottom:12px;width:48px;height:48px;background:#070A11;border:1px solid var(--line-strong);border-radius:12px;display:flex;align-items:center;justify-content:center}.app-visuals .app-icon img{width:48px;height:48px;object-fit:contain}
.long-note{background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:18px}.long-note + .long-note{margin-top:14px}
.faq-mini{display:grid;grid-template-columns:1fr 1fr;gap:12px}.faq-mini details{background:var(--panel);border:1px solid var(--line);padding:12px 14px;border-radius:10px}.faq-mini summary{cursor:pointer;color:var(--title);font-weight:700}.faq-mini p{margin-top:9px;color:var(--muted)}
/* 每日精选：双列布局 */
.page-zhoukan .zhoukan-grid{display:grid;grid-template-columns:.92fr 1.08fr;gap:18px}.page-zhoukan .zhoukan-grid>section{background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:18px}.page-zhoukan .zhoukan-grid .image-slot{margin-bottom:16px}.page-zhoukan .observe-list article{padding:13px 0;border-bottom:1px solid var(--line)}.page-zhoukan .observe-list article:last-child{border-bottom:0}
/* 应用分类：目录式 */
.page-sheding .setting-index{display:grid;grid-template-columns:210px 1fr;gap:20px}.setting-side{border-right:1px solid var(--line);padding-right:16px}.setting-side a{display:block;padding:9px 10px;margin-bottom:7px;border-radius:8px;background:var(--panel);color:var(--muted)}.setting-side a:hover{color:var(--title);background:var(--panel2)}.setting-body section{padding:0 0 22px;margin-bottom:22px;border-bottom:1px solid var(--line)}.term-table{display:grid;grid-template-columns:160px 1fr;border:1px solid var(--line);border-radius:10px;overflow:hidden}.term-table div{padding:10px 12px;border-bottom:1px solid var(--line)}.term-table div:nth-child(odd){background:var(--panel);color:var(--sand);font-weight:700}
/* 软件观察：重点切片 */
.character-cut{position:relative;margin-top:18px}.character-cut .image-slot{height:176px}.character-ribbon{position:relative;margin:-34px 20px 0;background:var(--panel2);border:1px solid var(--line-strong);border-radius:10px;padding:18px}.character-rows{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:18px}.character-row{background:var(--panel);border:1px solid var(--line);padding:15px;border-radius:10px}.state-pill{display:inline-flex;align-items:center;min-height:28px;padding:0 9px;border-radius:999px;background:#0B1320;border:1px solid var(--line-strong);color:var(--bright);font-size:12px}
/* 使用场景：交错内容 */
.scene-book{display:grid;gap:18px}.scene-sheet{display:grid;grid-template-columns:1fr 1.2fr;gap:0;background:var(--panel);border:1px solid var(--line);border-radius:10px;overflow:hidden}.scene-sheet:nth-child(even){grid-template-columns:1.2fr 1fr}.scene-sheet:nth-child(even) .scene-visual{order:2}.scene-sheet .image-slot{height:168px;border:0;border-radius:0;box-shadow:none}.scene-text{padding:18px}
/* 上手指南：步骤条目 */
.shot-stack{counter-reset:shot;display:grid;gap:12px}.shot-entry{counter-increment:shot;display:grid;grid-template-columns:74px 1fr;gap:14px;background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:14px}.shot-entry:before{content:"镜 " counter(shot,decimal-leading-zero);color:var(--bright);font-weight:800;letter-spacing:.08em}.shot-entry.feature{grid-template-columns:74px 180px 1fr}.shot-entry .image-slot{height:168px}
/* 界面体验 */
.color-classroom{display:grid;grid-template-columns:1fr 2fr;gap:18px}.color-classroom .image-slot{height:160px;position:sticky;top:138px}.class-units{display:grid;gap:12px}.class-unit{padding:16px;border-radius:10px;border:1px solid var(--line);background:var(--panel2)}
/* 效率工具 */
.sound-flow{display:grid;gap:0;border-left:2px solid var(--darkgreen);padding-left:20px}.sound-item{position:relative;padding:0 0 22px 8px}.sound-item:before{content:"";position:absolute;left:-27px;top:7px;width:11px;height:11px;border-radius:50%;background:var(--green);box-shadow:0 0 0 5px #0B0F17}.sound-item .image-slot{height:160px;margin:12px 0}
/* 更新追踪 */
.calendar-status{display:grid;gap:10px}.status-row{display:grid;grid-template-columns:120px 140px 1fr;gap:14px;align-items:start;background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:14px}.status-name{color:var(--sand);font-weight:800}.status-value{color:var(--bright);font-weight:700}
/* 软件指南 */
.article-index{display:grid;grid-template-columns:1.3fr .7fr;gap:18px}.article-index .image-slot{height:176px}.article-list{display:grid;gap:12px}.article-link{display:block;background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:15px}.article-link span{display:block;color:var(--muted);margin-top:4px}
/* 发现应用 */
.discover-index{display:grid;grid-template-columns:1fr 1fr;gap:14px}.discover-block{min-height:190px;background:linear-gradient(145deg,var(--panel2),var(--panel));border:1px solid var(--line);border-radius:10px;padding:18px;display:flex;flex-direction:column}.discover-block .btn-secondary{align-self:flex-start;margin-top:auto}
/* APP */
.app-page-wrap{display:flex;gap:24px;align-items:flex-start}.app-page-wrap .app-copy{flex:1}.app-page-visual{width:240px;flex:0 0 240px;position:sticky;top:138px}.app-page-visual .image-slot{height:320px}.feature-strips{display:grid;gap:10px;margin-top:16px}.feature-strip{padding:14px 16px;border-left:3px solid var(--green);background:var(--panel)}
/* 条款 */
.policy-sections{display:grid;gap:16px}.policy-sections section{background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:18px}.policy-sections ul{padding-left:20px;margin:8px 0 0}.policy-sections li{margin:6px 0}
/* 帮助 */
.help-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.help-card{background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:18px}.help-card a{color:var(--bright);font-weight:700}
/* FAQ */
.faq-list{display:grid;gap:12px}.faq-item{background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:16px 18px}.faq-item h2{font-size:16px;margin-bottom:7px}.faq-item p{margin:0;color:var(--text)}
/* 联系 */
.contact-paths{display:grid;grid-template-columns:1fr 1fr;gap:14px}.contact-path{background:var(--panel2);border:1px solid var(--line);border-radius:10px;padding:18px}.contact-note{margin-top:18px;padding:16px;border-left:3px solid var(--green);background:var(--panel)}
/* 关于 */
.about-banner{margin-bottom:20px}.about-statement{display:grid;grid-template-columns:.8fr 1.2fr;gap:20px}.about-aside{background:var(--panel2);border:1px solid var(--line);border-radius:10px;padding:18px;height:max-content}.about-copy section{padding-bottom:20px;margin-bottom:20px;border-bottom:1px solid var(--line)}
/* 安装 */
.install-steps{display:grid;gap:12px;counter-reset:install}.install-step{counter-increment:install;display:grid;grid-template-columns:54px 1fr;gap:14px;background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:16px}.install-step:before{content:counter(install,decimal-leading-zero);color:var(--bright);font-weight:900;font-size:20px}
.site-footer{background:#05070D;border-top:1px solid var(--line-strong);color:var(--text);font-size:13px;padding:28px 0 80px}.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:22px}.footer-brand-link{display:flex;align-items:center;min-height:44px}.footer-brand div{display:flex;gap:9px;align-items:baseline}.footer-brand span{color:var(--muted);font-size:12px}.footer-groups{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.footer-groups h2{font-size:13px;color:var(--bright);margin-bottom:8px}.footer-groups a{display:block;color:var(--muted);padding:3px 0}.footer-note{margin-top:22px;padding-top:16px;border-top:1px solid var(--line);color:var(--muted)}.copyright{margin:8px 0 0;color:var(--quiet)}
.site-overlay{position:fixed;z-index:89;inset:0;background:rgba(0,0,0,.58);opacity:0;pointer-events:none;transition:opacity .18s ease}.site-overlay.visible{opacity:1;pointer-events:auto}.site-overlay[hidden]{display:none}
.site-drawer{position:fixed;z-index:92;right:18px;top:88px;width:min(32vw,420px);max-height:76vh;background:#070A11;border:1px solid var(--line-strong);border-radius:12px;box-shadow:var(--shadow);transform:translateX(calc(100% + 40px));visibility:hidden;pointer-events:none;transition:transform .22s ease,visibility .22s;overflow:auto}.site-drawer.open{transform:translateX(0);visibility:visible;pointer-events:auto}.drawer-head{position:sticky;top:0;z-index:2;background:#070A11;display:flex;align-items:center;justify-content:space-between;padding:13px;border-bottom:1px solid var(--line)}.drawer-brand{display:flex;align-items:center;gap:10px;min-height:44px}.drawer-brand span{display:flex;flex-direction:column}.drawer-brand small{color:var(--muted);font-size:11px}.drawer-close,.search-close{min-height:44px;padding:0 12px;background:#0B0F17;color:var(--text);border:1px solid var(--line-strong);border-radius:8px}.drawer-body{padding:14px}.drawer-body section+section{margin-top:18px}.drawer-body h2{font-size:13px;color:var(--bright);margin-bottom:6px}.drawer-body a{display:block;padding:9px 10px;border-radius:8px}.drawer-body a:hover{background:var(--panel)}.drawer-body strong{display:block;color:var(--title)}.drawer-body span{display:block;color:var(--muted);font-size:12px;line-height:1.5;margin-top:2px}
.search-panel{position:fixed;z-index:91;left:0;right:0;top:74px;visibility:hidden;pointer-events:none;transform:translateY(-12px);opacity:0;transition:.18s ease}.search-panel.open{visibility:visible;pointer-events:auto;transform:translateY(0);opacity:1}.search-card{width:min(var(--max),calc(100% - 32px));margin:0 auto;background:#070A11;border:1px solid var(--line-strong);border-radius:0 0 12px 12px;box-shadow:var(--shadow);padding:16px}.search-head{display:flex;align-items:center;justify-content:space-between;gap:12px}.search-card p{color:var(--muted);margin:8px 0 12px}.search-links{display:flex;flex-wrap:wrap;gap:8px}.search-links a{min-height:40px;padding:0 13px;display:inline-flex;align-items:center;border:1px solid var(--line-strong);border-radius:8px;color:var(--text)}
.mobile-bottom{display:none}
@media (max-width:760px){
    .topline-inner,.brandbar-inner,.site-main,.footer-inner{width:calc(100% - 32px)}
    .quicknav{display:none}.site-main{padding-top:102px;padding-bottom:88px}
    .brand-actions{gap:6px}.app-link,.menu-open{padding:0 10px}.menu-open{font-size:0}.menu-open:after{content:"导航";font-size:14px}
    .site-drawer{right:8px;top:78px;width:88%;max-height:76vh}
    .search-panel{top:0;bottom:0;background:#070A11}.search-card{width:100%;height:100%;border:0;border-radius:0;padding:24px 16px;overflow:auto}.search-links{display:grid;grid-template-columns:1fr 1fr}.search-links a{justify-content:center;min-height:48px}
    .narrow-pair,.scene-pages,.character-rows,.discover-index,.faq-mini,.help-grid,.contact-paths,.footer-groups,.page-zhoukan .zhoukan-grid,.about-statement,.article-index{grid-template-columns:1fr}
    .wrap-app,.app-page-wrap{display:block}.app-visuals,.app-page-visual{width:240px;max-width:100%;margin:18px auto 0;position:relative;top:auto}.image-tall,.app-page-visual .image-slot{width:240px;max-width:100%;margin:auto}
    .mirror-line{grid-template-columns:90px 1fr}.setting-index{display:block}.setting-side{border-right:0;border-bottom:1px solid var(--line);padding:0 0 10px;margin-bottom:18px;display:flex;gap:7px;flex-wrap:wrap}.setting-side a{white-space:nowrap;margin:0}.term-table{grid-template-columns:110px 1fr}
    .scene-sheet,.scene-sheet:nth-child(even){grid-template-columns:1fr}.scene-sheet:nth-child(even) .scene-visual{order:0}
    .shot-entry,.shot-entry.feature{grid-template-columns:58px 1fr}.shot-entry.feature .image-slot{grid-column:2;height:160px}
    .color-classroom{display:block}.color-classroom .image-slot{position:relative;top:auto;margin-bottom:16px}
    .status-row{grid-template-columns:1fr;gap:4px}.about-banner .image-slot{height:180px}
    .mobile-bottom{position:fixed;z-index:70;left:0;right:0;bottom:0;height:calc(48px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);display:grid;grid-template-columns:repeat(4,1fr);background:#05070D;border-top:1px solid var(--line-strong)}.mobile-bottom a{display:flex;align-items:center;justify-content:center;min-height:48px;font-size:13px;color:var(--muted)}.mobile-bottom a.active{background:var(--green);color:#07111F;font-weight:800}
    .site-footer{padding-bottom:96px}.footer-groups{grid-template-columns:1fr 1fr}.cut-copy{margin:-18px 10px 0}.section-head{align-items:flex-start;flex-direction:column}.image-wide{height:160px}
}
@media (max-width:430px){
    .brand-link{min-width:74px}.brand-logo{max-width:104px}.brand-actions{margin-left:auto}.app-link{padding:0 9px}.menu-open{padding:0 9px}
    .footer-groups{grid-template-columns:1fr 1fr}.footer-brand div{flex-direction:column;gap:0}.mirror-line{display:block}.mirror-line strong{display:block;margin-bottom:4px}
}
@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}
.article-feature-note{margin-top:14px}
.app-page-icon{width:48px;height:48px;object-fit:contain;object-position:center;margin:12px auto 0}