*{box-sizing:border-box}:root{--bg:#0C100E;--deep:#080A09;--panel:#141A16;--panel2:#1A2420;--title:#E8F6EE;--text:#CDE3D6;--muted:#8FB3A0;--faint:#6E8F7E;--green:#2A9D5C;--bright:#3CB371;--gdeep:#146B3A;--sand:#EFE6D2;--line:rgba(42,157,92,.18);--strong:rgba(42,157,92,.45);--shadow:0 12px 28px rgba(8,10,9,.35)}html{scroll-behavior:smooth;background:var(--deep)}body{margin:0;background:var(--bg);color:var(--text);font:15px/1.7 Arial,"PingFang SC","Microsoft YaHei",sans-serif;overflow-x:hidden}body.no-scroll{overflow:hidden}a{color:inherit;text-decoration:none}button{font:inherit}img{display:block;max-width:100%}.shell{width:min(960px,calc(100% - 32px));margin:auto}.skip-link{position:fixed;left:16px;top:-80px;z-index:200;background:var(--sand);color:#08110C;padding:10px 14px;border-radius:8px}.skip-link:focus{top:10px}.top-strip{position:fixed;z-index:120;top:0;left:0;right:0;height:20px;background:#070A08;color:var(--bright);font-size:12px}.top-strip-inner{height:20px;display:flex;align-items:center;justify-content:space-between}.text-button{border:0;background:transparent;color:var(--bright);padding:0;cursor:pointer}.site-head{position:fixed;z-index:118;top:20px;left:0;right:0;height:54px;background:#090D0B;border-bottom:1px solid var(--line)}.site-head-inner{height:54px;display:flex;align-items:center;justify-content:space-between}.brand-link{display:flex;align-items:center;min-height:44px}.brand-logo,.footer-logo,.side-logo{height:24px;width:auto;object-fit:contain;object-position:center}.brand-fallback{font-weight:700;font-size:16px;color:var(--title);letter-spacing:.08em}.head-actions{display:flex;align-items:center;gap:8px}.head-app,.menu-open,.menu-close,.search-close{min-height:44px;display:inline-flex;align-items:center;justify-content:center;border-radius:8px;padding:0 14px;font-size:14px}.head-app{background:linear-gradient(135deg,#3CB371 0%,#2A9D5C 55%,#146B3A 100%);color:#08110C;font-weight:700}.menu-open,.menu-close,.search-close{border:1px solid var(--strong);background:#0A0F0C;color:var(--text);cursor:pointer}.top-tabs{position:fixed;z-index:116;top:74px;left:0;right:0;height:44px;background:#090D0B;border-bottom:1px solid var(--line)}.top-tabs-inner{height:44px;display:flex;align-items:center;gap:10px}.top-tab{width:88px;height:22px;border:1px solid var(--strong);border-radius:999px;display:inline-flex;align-items:center;justify-content:center;font-size:13px;color:var(--text)}.top-tab.is-active{background:var(--green);border-color:var(--green);color:#08110C;font-weight:700}.main-content{padding-top:144px;padding-bottom:72px}h1,h2,h3{color:var(--title);margin:0 0 12px}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 14px}.lead{font-size:16px;color:var(--sand);max-width:760px}.eyebrow{font-size:12px;letter-spacing:.14em;color:var(--bright)}.section{padding:28px 0;border-bottom:1px solid var(--line)}.section:last-child{border-bottom:0}.btn-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}.btn-primary,.btn-secondary{min-height:42px;padding:0 16px;border-radius:8px;display:inline-flex;align-items:center;justify-content:center;font-size:14px;white-space:nowrap}.btn-primary{background:linear-gradient(135deg,#3CB371 0%,#2A9D5C 55%,#146B3A 100%);color:#08110C;font-weight:700}.btn-secondary{background:#0A0E0C;border:1px solid var(--strong);color:var(--text)}a:hover{filter:brightness(1.08)}a:focus-visible,button:focus-visible{outline:2px solid var(--sand);outline-offset:3px}.index-tags{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:20px}.index-tags a{border:1px solid var(--strong);border-radius:999px;padding:5px 12px;font-size:13px}.hero-intro{padding:34px 0 28px}.media-slot{background:var(--deep);border:1px solid var(--line);border-radius:10px;display:flex;align-items:center;justify-content:center;overflow:hidden}.media-slot img{width:100%;height:100%;object-fit:contain;object-position:center}.media-176{height:176px}.media-168{height:168px}.media-160{height:160px}.angle-cut{position:relative;border:1px solid var(--strong);background:linear-gradient(135deg,#101712,#0A0D0B);padding:18px;border-radius:10px;overflow:hidden}.narrow-two{display:grid;grid-template-columns:1fr 1fr;gap:14px}.narrow-two article{background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:16px}.scene-pages{display:grid;grid-template-columns:1.15fr .85fr;gap:14px}.scene-card{background:var(--panel2);border-radius:10px;padding:16px;border:1px solid var(--line)}.shot-list{display:grid;gap:10px}.shot-row{display:grid;grid-template-columns:110px 1fr;gap:14px;align-items:start;border-left:2px solid var(--green);padding:10px 0 10px 14px}.lesson-lines{display:grid;gap:8px;margin-top:14px}.lesson-lines div{padding:10px 12px;border-radius:8px;background:var(--panel);border:1px solid var(--line)}.status-list{display:grid;gap:10px}.status-item{display:flex;justify-content:space-between;gap:12px;padding:12px 14px;border:1px solid var(--line);border-radius:10px;background:var(--panel)}.status{font-size:12px;border-radius:999px;padding:3px 9px;height:max-content;background:#0A0F0C;border:1px solid var(--strong);color:var(--sand)}.wrap-media{display:block;overflow:auto}.wrap-visual{float:right;width:240px;height:320px;margin:0 0 18px 24px}.app-icon-row{display:flex;align-items:center;gap:12px;margin:14px 0}.app-icon{width:48px;height:48px;object-fit:contain}.policy-box,.brand-note{background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:18px}.faq-mini{display:grid;gap:10px}.faq-mini article{padding:14px 16px;background:var(--panel);border-left:2px solid var(--green);border-radius:8px}.page-head{padding:26px 0 22px;border-bottom:1px solid var(--line)}.domain-index{display:grid;grid-template-columns:180px 1fr;gap:18px}.domain-index nav{position:sticky;top:136px;align-self:start;background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:12px}.domain-index nav a{display:block;padding:8px 10px;color:var(--muted)}.domain-index-content,.cut-panels,.class-list,.sound-list,.timeline-status,.discovery-index,.terms,.faq-list{display:grid;gap:14px}.domain-index-content section,.terms section{padding:18px;background:var(--panel);border:1px solid var(--line);border-radius:10px}.split-narrow{display:grid;grid-template-columns:1fr 1fr;gap:16px}.split-narrow section{padding:18px;background:var(--panel);border-top:2px solid var(--green);border-radius:0 0 10px 10px}.split-narrow .wide{grid-column:1/-1}.cut-panels section{background:var(--panel);border:1px solid var(--line);padding:22px;border-radius:10px;clip-path:polygon(0 0,97% 0,100% 18px,100% 100%,3% 100%,0 calc(100% - 18px))}.page-sheets{display:grid;grid-template-columns:1fr 1fr;gap:14px}.page-sheets section{min-height:180px;background:var(--panel2);border:1px solid var(--line);border-radius:10px;padding:20px}.page-sheets section:nth-child(3n){grid-column:1/-1}.lens-stack{display:grid;gap:12px}.lens-item{display:grid;grid-template-columns:88px 1fr;gap:16px;padding:16px 0;border-bottom:1px solid var(--line)}.lens-no{color:var(--bright);font-weight:700}.class-list{counter-reset:lesson}.class-list section{position:relative;background:var(--panel);border:1px solid var(--line);padding:18px 18px 18px 64px;border-radius:10px}.class-list section:before{counter-increment:lesson;content:counter(lesson,decimal-leading-zero);position:absolute;left:16px;top:18px;color:var(--bright);font-weight:700}.sound-list section{display:grid;grid-template-columns:180px 1fr;border:1px solid var(--line);border-radius:10px;overflow:hidden}.sound-list h2{margin:0;padding:18px;background:#0A0F0C}.sound-list div{padding:18px;background:var(--panel)}.timeline-status section{display:grid;grid-template-columns:120px 1fr auto;gap:16px;padding:16px;border:1px solid var(--line);border-radius:10px;background:var(--panel)}.timeline-status .mark{color:var(--bright);font-weight:700}.article-directory{display:grid;grid-template-columns:.8fr 1.2fr;gap:18px}.article-directory aside{background:var(--deep);border:1px solid var(--strong);border-radius:10px;padding:18px;height:max-content}.article-directory .articles{display:grid;gap:12px}.article-directory article{background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:18px}.discovery-row{display:grid;grid-template-columns:120px 1fr 120px;gap:14px;align-items:center;padding:14px 0;border-bottom:1px solid var(--line)}.discovery-row a{justify-self:end;color:var(--sand);border-bottom:1px solid var(--strong)}.terms section{border-left:2px solid var(--green)}.help-grid,.contact-lanes,.brand-statement{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.help-grid section,.contact-lanes section,.brand-statement section{padding:18px;background:var(--panel);border:1px solid var(--line);border-radius:10px}.brand-statement .full{grid-column:1/-1}.faq-list details{border:1px solid var(--line);border-radius:10px;background:var(--panel);padding:0 16px}.faq-list summary{cursor:pointer;color:var(--title);font-weight:700;padding:16px 0}.banner-slot{height:200px;margin-bottom:20px;background:var(--deep);border:1px solid var(--line);border-radius:10px;display:flex;align-items:center;justify-content:center;overflow:hidden}.banner-slot img{width:100%;height:100%;object-fit:contain;object-position:center}.note{font-size:13px;color:var(--muted)}.meta-line{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}.meta-line span{font-size:12px;color:var(--muted);border:1px solid var(--line);border-radius:999px;padding:3px 8px}.site-footer{background:#050706;border-top:1px solid var(--line);padding:30px 0 calc(24px + env(safe-area-inset-bottom))}.footer-inner{display:grid;grid-template-columns:1.1fr 1.9fr;gap:28px}.footer-brand-row{display:flex;align-items:center;gap:10px;margin-bottom:12px}.footer-brand-row div{display:grid;line-height:1.2}.footer-brand-row span,.footer-brand p,.footer-bottom{font-size:13px;color:var(--muted)}.footer-links{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.footer-links h2{font-size:13px;color:var(--sand)}.footer-links a{display:block;font-size:13px;padding:3px 0}.footer-bottom{border-top:1px solid var(--line);padding-top:14px;margin-top:18px;display:flex;gap:16px;flex-wrap:wrap}.overlay{position:fixed;z-index:150;inset:0;background:rgba(0,0,0,.58);opacity:0;visibility:hidden;pointer-events:none;transition:.2s}.overlay.is-open{opacity:1;visibility:visible;pointer-events:auto}.side-menu{position:fixed;z-index:160;right:16px;top:92px;width:min(32vw,390px);max-height:76vh;overflow:auto;background:#0A0E0C;border:1px solid var(--strong);border-radius:12px;box-shadow:var(--shadow);transform:translateX(calc(100% + 32px));visibility:hidden;pointer-events:none;transition:.25s;padding:16px}.side-menu.is-open{transform:none;visibility:visible;pointer-events:auto}.side-menu-head,.search-head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px}.side-brand{display:flex;align-items:center;gap:10px;font-weight:700}.menu-groups{display:grid;gap:16px}.menu-groups h2{font-size:13px;color:var(--bright)}.menu-groups a{display:block;padding:9px 10px;border-radius:8px}.menu-groups a:hover{background:var(--panel)}.menu-groups strong{display:block}.menu-groups span{display:block;color:var(--muted);font-size:12px}.search-panel{position:fixed;z-index:158;top:74px;left:0;right:0;visibility:hidden;opacity:0;pointer-events:none;transition:.2s}.search-panel.is-open{visibility:visible;opacity:1;pointer-events:auto}.search-card{width:min(960px,calc(100% - 32px));margin:auto;background:#090D0B;border:1px solid var(--strong);border-radius:0 0 12px 12px;box-shadow:var(--shadow);padding:16px}.search-head p{font-size:13px;color:var(--muted);margin:2px 0}.search-shortcuts{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}.search-shortcuts a{border:1px solid var(--strong);padding:8px 13px;border-radius:999px;font-size:13px}.mobile-bar{display:none}@media(max-width:760px){.top-tabs{display:none}.main-content{padding-top:100px;padding-bottom:86px}.head-app,.menu-open{padding:0 10px}.narrow-two,.scene-pages,.split-narrow,.page-sheets,.brand-statement,.contact-lanes,.help-grid,.article-directory{grid-template-columns:1fr}.page-sheets section:nth-child(3n),.brand-statement .full,.split-narrow .wide{grid-column:auto}.domain-index{grid-template-columns:1fr}.domain-index nav{position:static;display:flex;gap:6px;flex-wrap:wrap}.sound-list section,.timeline-status section{grid-template-columns:1fr}.discovery-row{grid-template-columns:1fr}.discovery-row a{justify-self:start}.wrap-visual{float:none;width:min(240px,100%);height:320px;margin:0 auto 18px}.footer-inner{grid-template-columns:1fr}.footer-links{grid-template-columns:repeat(2,1fr)}.side-menu{top:80px;right:12px;width:88%}.search-panel{inset:0;top:0;background:#080A09;padding:20px 16px}.search-card{width:100%;height:100%;border-radius:10px;padding-top:calc(14px + env(safe-area-inset-top))}.search-shortcuts{display:grid;grid-template-columns:1fr 1fr}.search-shortcuts a{min-height:44px;display:flex;align-items:center;justify-content:center}.mobile-bar{position:fixed;z-index:140;left:0;right:0;bottom:0;height:calc(48px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);background:#070A08;border-top:1px solid var(--line);display:grid;grid-template-columns:repeat(4,1fr)}.mobile-bar a{display:flex;align-items:center;justify-content:center;font-size:13px}.mobile-bar a.is-active{background:var(--green);color:#08110C;font-weight:700}}@media(max-width:480px){h1{font-size:23px}.shot-row{grid-template-columns:1fr}.footer-links{grid-template-columns:1fr 1fr}}