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@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.spinner{animation-duration:1.5s}.download-button{transition:none}}
.summary-source-panel{margin-bottom:15px;padding:14px;border:1px solid var(--line);border-radius:12px;background:#f8f7f3}.source-label,.manual-source-panel>label{display:block;font-size:8px;font-weight:800;letter-spacing:1.4px;color:#858681;margin-bottom:9px}.source-tabs{display:grid;grid-template-columns:repeat(3,1fr);gap:7px}.source-tab{border:1px solid #dedcd6;background:#fff;border-radius:8px;padding:10px;text-align:left;display:flex;flex-direction:column;cursor:pointer;color:#777}.source-tab b{font-size:10px;color:var(--ink)}.source-tab small{font-size:8px;margin-top:2px}.source-tab.active{border-color:var(--red);box-shadow:0 0 0 2px rgba(255,85,62,.08)}.manual-source-panel{margin-top:12px}.manual-source-panel textarea{width:100%;resize:vertical;min-height:130px;border:1px solid #d8d6d0;border-radius:9px;padding:12px;font-size:12px;line-height:1.55;outline:none;background:#fff}.manual-source-panel textarea:focus{border-color:var(--ink);box-shadow:0 0 0 3px rgba(11,13,18,.06)}.manual-source-panel>span{display:block;text-align:right;font-size:8px;color:#999;margin-top:5px}.upload-panel label{min-height:95px;border:1px dashed #cac7bf;border-radius:9px;background:#fff;display:flex;align-items:center;justify-content:center;flex-direction:column;cursor:pointer}.upload-panel label>span{font-size:20px;color:var(--red);margin-bottom:6px}.upload-panel label>b{font-size:10px;color:var(--ink)}.upload-panel label>small{font-size:8px;margin-top:3px}.upload-panel input{position:absolute;opacity:0;pointer-events:none}.upload-panel p{text-align:center;font-size:9px;color:#858681;margin:7px 0 0}.manual-input .input-shell{display:none}.manual-input .url-row{grid-template-columns:1fr}.analysis-output{margin-top:20px;padding:23px;border-radius:13px;background:#fff;border:1px solid rgba(65,164,110,.28);box-shadow:0 10px 35px rgba(11,13,18,.07)}.output-top{display:flex;justify-content:space-between;align-items:flex-start}.output-top>div>span{font-size:8px;font-weight:800;letter-spacing:1.5px;color:#41a46e}.output-top h2{font-size:24px;letter-spacing:-.04em;margin-top:4px}.summary-overview{font-size:13px;line-height:1.7;color:#555752;margin:20px 0;padding:17px;background:#f7f5ef;border-radius:9px}.output-columns{display:grid;grid-template-columns:1.3fr .7fr;gap:28px}.analysis-output h3{font-size:10px;letter-spacing:.04em;text-transform:uppercase;margin:10px 0 12px}.analysis-output ul{margin:0;padding-left:17px}.analysis-output li{font-size:11px;line-height:1.55;margin-bottom:8px;color:#555752}.topic-list{display:flex;flex-wrap:wrap;gap:6px}.topic-list span{font-size:9px;border:1px solid #dedcd6;border-radius:99px;padding:6px 8px}.chapter-list{display:grid;gap:6px}.chapter-list div{display:grid;grid-template-columns:auto 1fr;gap:10px;padding:9px;border-top:1px solid var(--line);font-size:10px}.chapter-list time{font-weight:700;color:var(--red)}
@media(max-width:800px){.source-tabs{grid-template-columns:1fr}.source-tab{display:grid;grid-template-columns:1fr auto}.output-columns{grid-template-columns:1fr}.analysis-output{padding:17px}}

/* EchoFrame visual system: teal, aqua, deep ocean, and wave-cut technical surfaces. */
:root{--ink:#062a33;--paper:#eafbf8;--cream:#d8f3ee;--red:#08bfa5;--muted:#477078;--line:rgba(5,56,67,.16);--display:"Trebuchet MS","Segoe UI",sans-serif;--body:"Segoe UI",Arial,sans-serif}
body{background:linear-gradient(180deg,#e9fcf8 0,#f5fffd 34%,#dff7f3 68%,#c9eee8 100%);background-attachment:fixed}
body::before{content:"";position:absolute;inset:0 0 auto;height:880px;pointer-events:none;z-index:-2;background:radial-gradient(ellipse at 15% 12%,rgba(26,218,193,.32),transparent 38%),radial-gradient(ellipse at 88% 16%,rgba(0,107,130,.22),transparent 35%),linear-gradient(155deg,transparent 42%,rgba(255,255,255,.62) 42.2%,transparent 43%)}
body::after{content:"";position:absolute;left:-8%;right:-8%;top:420px;height:280px;pointer-events:none;z-index:-1;border-radius:0 0 50% 50%/0 0 18% 18%;background:linear-gradient(180deg,rgba(25,193,177,.08),rgba(4,79,94,.04));transform:rotate(-2deg)}
.ambient-one{width:620px;height:620px;right:-210px;background:radial-gradient(circle,rgba(0,172,177,.25),transparent 68%)}
.ambient-two{width:520px;height:520px;left:-250px;background:radial-gradient(circle,rgba(44,232,194,.24),transparent 69%)}
.site-header{border-bottom-color:rgba(4,71,83,.18)}
.brand{letter-spacing:-.45px}.brand-mark{border-radius:50% 50% 46% 54%;background:linear-gradient(145deg,#19ddbf,#047d91);box-shadow:0 8px 24px rgba(0,125,145,.3)}
.brand-mark i{border-left-color:#eafffb}
.header-cta{border-color:#087f8d;background:rgba(240,255,252,.58);box-shadow:0 6px 18px rgba(3,92,105,.08)}
.eyebrow{border-color:rgba(0,130,140,.22);background:rgba(241,255,252,.72);box-shadow:0 8px 28px rgba(2,93,102,.08)}
.pulse-dot{background:#0bd1ae;box-shadow:0 0 0 4px rgba(11,209,174,.14),0 0 22px rgba(11,209,174,.45)}
em{color:#008f96}
.hero-copy{color:#4b7278}
.download-card{background:rgba(244,255,253,.82);border:1px solid rgba(4,101,112,.2);border-radius:22px;box-shadow:0 30px 90px rgba(3,62,74,.16),0 1px 0 rgba(255,255,255,.95) inset;backdrop-filter:blur(22px)}
.download-card::before{content:"";display:block;height:3px;margin:-26px -26px 22px;border-radius:22px 22px 0 0;background:linear-gradient(90deg,#21e0c0,#079cac 48%,#064d64)}
.tool-tabs{background:#dff4f0;border:1px solid rgba(3,90,102,.1)}.tool-tab.active{box-shadow:0 5px 18px rgba(4,76,88,.1)}
.tool-tab.active>span,.download-button{background:linear-gradient(135deg,#12c9a9,#067f93)}
.download-button{box-shadow:0 10px 26px rgba(0,126,145,.28)}.download-button:hover{background:linear-gradient(135deg,#08b99c,#056f82)}
.input-shell,.manual-source-panel textarea,.source-tab,.upload-panel label,.format-row,.insight-grid article{border-color:rgba(4,86,98,.18);background:#fbfffe}
.input-shell:focus-within,.manual-source-panel textarea:focus{border-color:#0799a2;box-shadow:0 0 0 3px rgba(7,153,162,.1)}
.source-tab.active{border-color:#08aa9d;box-shadow:0 0 0 2px rgba(8,170,157,.09)}
.state-panel,.summary-source-panel{background:#edf9f7}.error-panel{background:#effcf9;border-color:rgba(2,157,145,.28)}
.state-icon,.insight-grid article>span{background:#d7f7f0;color:#078f89}
.spinner{border-color:#cce6e1;border-top-color:#08bfa5}.progress-track{background:#d7ebe7}.progress-track span{background:linear-gradient(90deg,#17d4b4,#07879a)}
.feature-band{background:linear-gradient(135deg,#032f3c,#064e5b 56%,#087b7b);position:relative;overflow:hidden}.feature-band::after{content:"";position:absolute;left:-5%;right:-5%;bottom:-130px;height:230px;border-radius:50% 50% 0 0;background:rgba(20,210,179,.08);transform:rotate(2deg)}
.feature-grid article{border-color:rgba(159,245,229,.17)}
.analysis-showcase{border-color:rgba(3,92,104,.18);box-shadow:0 18px 55px rgba(3,68,79,.09)}.analysis-showcase aside{background:#d9f1ed}
footer{background:linear-gradient(135deg,#bfe8e0,#d9f5ef)}
.summary-source-panel,.analysis-output,.analysis-showcase,.steps{box-shadow:0 10px 34px rgba(4,76,86,.05)}
@media(max-width:800px){.download-card::before{margin:-17px -17px 16px}.hero{padding-top:56px}body::after{top:520px}}

/* Layout sample: offset studio deck */
@media(min-width:901px){.hero{max-width:1220px;text-align:left}.hero>.eyebrow{margin-left:0}.hero>h1{max-width:810px;margin:25px 0 18px}.hero>.hero-copy{max-width:560px;margin:0 0 38px}.hero>.download-card{max-width:920px;margin-left:220px;margin-right:0}.hero>.trust-strip{max-width:920px;margin-left:220px;justify-content:flex-start}.analysis-showcase{grid-template-columns:.8fr 1.2fr .72fr}}
@media(max-width:1180px) and (min-width:901px){.hero>.download-card,.hero>.trust-strip{margin-left:100px}}
/* THUMBNAIL DOWNLOAD FEATURE */
.hero-search-title{max-width:900px;margin:-4px auto 14px;font-size:clamp(27px,4.2vw,52px);line-height:1.05;letter-spacing:-.045em;text-wrap:balance}.hero-search-title em{display:inline-block;margin-top:5px}.hero-search-note{max-width:720px;margin:0 auto 20px;padding:10px 14px;border:1px solid var(--line);border-radius:12px;background:rgba(255,255,255,.56);color:var(--muted);font-size:11px;line-height:1.5}.hero-copy{margin-bottom:35px}
.thumbnail-preview{display:grid;grid-template-columns:minmax(220px,.9fr) minmax(0,1.1fr);gap:22px;align-items:center;margin-top:18px;padding:18px;border:1px solid rgba(128,128,128,.24);border-radius:22px;background:linear-gradient(135deg,rgba(255,255,255,.09),rgba(255,255,255,.025));box-shadow:0 20px 50px rgba(0,0,0,.12)}
.thumbnail-preview[hidden]{display:none}
.thumbnail-media{position:relative;overflow:hidden;aspect-ratio:16/9;border-radius:16px;background:#111;box-shadow:0 14px 32px rgba(0,0,0,.22)}
.thumbnail-media img{display:block;width:100%;height:100%;object-fit:cover}
.thumbnail-media>span{position:absolute;right:10px;bottom:10px;padding:5px 8px;border-radius:8px;background:rgba(0,0,0,.76);color:#fff;font-size:11px;font-weight:800;letter-spacing:.08em}
.thumbnail-copy{min-width:0}
.thumbnail-kicker{display:flex;gap:10px;align-items:center;justify-content:space-between;margin-bottom:8px;font-size:11px;font-weight:800;letter-spacing:.08em;text-transform:uppercase}
.thumbnail-kicker b{padding:5px 8px;border-radius:999px;background:rgba(47,196,116,.14);color:#3dce7d;font-size:10px;white-space:nowrap}
.thumbnail-copy h2{margin:0 0 7px;font-size:clamp(20px,3vw,30px);line-height:1.08}
.thumbnail-copy p{margin:0 0 12px;opacity:.72}
.thumbnail-copy code{font:600 12px/1.4 ui-monospace,SFMono-Regular,Consolas,monospace;word-break:break-all}
.thumbnail-copy>small{display:block;margin-top:10px;line-height:1.5;opacity:.64}
.thumbnail-download-button{display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:46px;padding:0 17px;border:0;border-radius:13px;background:var(--accent,#ff5c50);color:#fff;font-family:inherit;font-size:13px;font-weight:800;line-height:1;cursor:pointer;box-shadow:0 10px 24px rgba(0,0,0,.16)}
.thumbnail-download-button:hover{transform:translateY(-1px)}
.thumbnail-download-button:disabled{cursor:wait;opacity:.65}
.thumbnail-download-status{min-height:1.3em;margin-top:8px!important;font-size:12px;font-weight:700}
@media(max-width:720px){.hero-search-title{font-size:clamp(25px,8.5vw,36px);margin-top:-2px}.hero-search-note{font-size:10px;padding:9px 11px}.thumbnail-preview{grid-template-columns:1fr;gap:14px;padding:13px;border-radius:17px}.thumbnail-copy h2{font-size:21px}.thumbnail-download-button{width:100%}.thumbnail-kicker{align-items:flex-start}.thumbnail-kicker b{white-space:normal;text-align:right}}