:root{color-scheme:light;--ink:#1d362c;--muted:#506259;--green:#245d49;--line:#d8e2d9;--bg:#f3f5ef;--soft:#e9f0e7}
*{box-sizing:border-box}[hidden]{display:none!important}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:18px/1.5 "Microsoft YaHei",system-ui,-apple-system,sans-serif}
button,input{font:inherit}button,a,input,summary{touch-action:manipulation}button{cursor:pointer}button:disabled{opacity:.65;cursor:wait}
button:focus-visible,a:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid #386fbd;outline-offset:3px}
a{color:var(--green)}.shell{max-width:960px;padding:0 24px;margin:auto}
.site-header{min-height:68px;display:flex;align-items:center;justify-content:space-between;gap:12px;border-bottom:1px solid var(--line)}
.brand{font-size:25px;font-weight:700;text-decoration:none;white-space:nowrap}.brand span{font-size:17px;font-weight:500;margin-left:6px}
.list-heading{display:flex;align-items:center;gap:10px;min-width:0}.list-heading h1{font-size:25px;line-height:1.3;margin:0}.count{font-size:16px;color:var(--muted);white-space:nowrap}
.more{position:relative;flex-shrink:0}.more>button{list-style:none;min-width:68px;min-height:48px;display:flex;align-items:center;justify-content:center;gap:6px;cursor:pointer;font-size:17px;color:var(--green);border-radius:8px}.more.is-open>button{background:var(--soft)}
.menu-panel{position:absolute;right:0;top:calc(100% + 4px);width:180px;padding:8px;background:white;border:1px solid var(--line);border-radius:12px;box-shadow:0 8px 24px #0002;z-index:5}.menu-panel p{margin:0;padding:8px 12px;color:var(--muted);font-size:16px;overflow-wrap:anywhere}.menu-panel button{display:block;width:100%;text-align:left;min-height:48px;padding:8px 12px;border:0;background:white;color:var(--ink);border-radius:6px}.menu-panel button:hover{background:var(--soft)}
main{padding:16px 0 28px}h1,h2,h3,p{margin-top:0}.intro{color:var(--muted);margin-bottom:0}
.primary{display:inline-flex;align-items:center;justify-content:center;text-decoration:none;background:var(--green);border:1px solid var(--green);color:white;border-radius:8px;padding:10px 16px;min-height:50px;font-size:20px;font-weight:600;line-height:1.4}.primary:hover{background:#194534}
.login-panel{max-width:460px;margin:24px auto;background:white;border:1px solid var(--line);border-radius:16px;padding:28px}.login-panel h1{font-size:30px;line-height:1.3;margin:0 0 10px}.login-panel form{margin-top:22px}.login-panel label{display:block;font-size:20px;font-weight:600;margin-bottom:8px}
input{color:var(--ink);background:white;border:2px solid #a9bcad;border-radius:8px;min-width:0;min-height:52px;padding:10px 14px;width:100%;font-size:18px}input:focus{border-color:var(--green)}input::placeholder{color:#68766c;opacity:1}#code{font-size:27px;letter-spacing:2px;min-height:60px}#code::placeholder{font-size:20px;letter-spacing:0}#code[aria-invalid="true"]{border-color:#a63e2e}.inline-error{margin:10px 0 0;color:#9b2f22;font-size:17px}.login-panel .primary{width:100%;margin-top:18px;min-height:54px}.login-help{font-size:16px;color:var(--muted);margin:18px 0 0}
.search-bar{margin-bottom:12px}.search-bar input{min-height:48px;font-size:17px;border-width:1px}
.video-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;align-items:start}.video-card{background:white;border:1px solid var(--line);border-radius:12px;padding:16px;min-width:0}.video-card h3{font-size:21px;line-height:1.4;font-weight:600;margin:0 0 10px;overflow-wrap:anywhere}.card-controls{display:flex;align-items:center;justify-content:space-between;gap:12px}.card-meta{min-width:0}.video-info{font-size:16px;line-height:1.4;color:var(--muted);margin:0}.saved-mark{display:block;color:var(--green);font-size:15px;line-height:1.4;margin-top:3px;white-space:nowrap}.download-button{min-height:48px;padding:10px 14px;font-size:19px;flex-shrink:0;gap:5px}.downloaded .download-button{background:white;border-color:var(--green);color:var(--green)}.downloaded .download-button:hover{background:var(--soft)}
.video-card details{margin-top:4px;font-size:16px}.video-card summary{min-height:40px;display:flex;align-items:center;width:max-content;max-width:100%;cursor:pointer;color:var(--green)}.video-card summary::before{content:'＋';margin-right:5px}.video-card details[open] summary::before{content:'－'}.copy-text{white-space:pre-wrap;overflow-wrap:anywhere;line-height:1.7;margin-top:4px;max-height:320px;overflow:auto}
.empty{grid-column:1/-1;background:white;border:1px solid var(--line);border-radius:12px;padding:24px 18px;color:var(--muted)}.empty strong{display:block;color:var(--ink);font-size:21px;margin-bottom:6px}.empty p{margin:0;font-size:17px}
.download-help{margin-top:12px;color:var(--muted)}.download-help>summary{width:max-content;max-width:100%;font-size:16px;min-height:44px;display:flex;align-items:center;cursor:pointer;color:var(--green)}.download-help>summary::before{content:'＋';margin-right:5px}.download-help[open]>summary::before{content:'－'}.help-content{font-size:17px;line-height:1.65;padding:10px 14px;background:white;border:1px solid var(--line);border-radius:10px}.help-content p{margin:0 0 12px}.help-content p:last-child{margin-bottom:0}
.message{position:fixed;left:50%;bottom:16px;transform:translateX(-50%);padding:12px 16px;background:#1d3c2f;color:white;border-radius:10px;box-shadow:0 6px 20px #0002;max-width:min(90vw,560px);width:max-content;font-size:16px;z-index:10;pointer-events:none}.message.error{background:#8c3527}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
@media(max-width:680px){.shell{padding:0 14px}.site-header{min-height:62px}.list-heading h1{font-size:24px}main{padding:12px 0 22px}.video-grid{grid-template-columns:1fr;gap:10px}.video-card{padding:12px 14px}.video-card h3{font-size:20px;margin-bottom:8px}.card-controls{gap:10px}.download-button{font-size:18px;padding:10px 12px}.login-panel{margin:14px auto;padding:24px 20px}.login-panel h1{font-size:29px}}
@media(max-width:350px){.shell{padding:0 10px}.video-card{padding:12px}.download-button{padding:10px;font-size:18px}.login-panel{padding:22px 16px}}
/* Compact card revision: retain the title and a large, solid download target. */
.video-card{padding:10px 14px}.video-card h3{margin-bottom:4px}.card-controls{gap:8px}.card-meta{display:flex;flex:1;align-items:center;flex-wrap:wrap;gap:0 5px}.video-info{font-size:15px;white-space:nowrap}.saved-mark{display:inline-block;font-size:14px;line-height:1.5;margin:0;white-space:nowrap}.caption-toggle{min-width:44px;min-height:44px;padding:6px 4px;border:0;background:transparent;color:var(--green);font-size:15px;text-decoration:underline;text-underline-offset:3px;white-space:nowrap;border-radius:6px}.caption-toggle:hover{background:var(--soft)}.download-button,.downloaded .download-button{background:#173e34;color:white;border-color:#173e34}.download-button:hover,.downloaded .download-button:hover{background:#0e2c24;border-color:#0e2c24}.copy-text{margin-top:8px;padding-top:10px;border-top:1px solid var(--line);font-size:16px}
@media(max-width:680px){.video-grid{gap:8px}.video-card{padding:10px 12px}.video-card h3{margin-bottom:4px}.card-controls{gap:8px}}
@media(max-width:350px){.video-card{padding:10px}}
/* Brand finish: quiet surfaces and a strong primary action, within the same compact layout. */
:root{--ink:#20362f;--muted:#626f68;--green:#214f40;--line:#e0e6df;--bg:#f5f6f2;--soft:#edf3eb}
.site-header{border-bottom-color:#dfe5dc}.brand{letter-spacing:1px;color:#173e34}.brand span{letter-spacing:0;color:var(--muted);font-size:16px}.list-heading{gap:8px}.list-heading h1{font-size:23px;letter-spacing:.5px;color:#173e34;white-space:nowrap}.list-heading h1 span{font-size:17px;letter-spacing:0;font-weight:500;color:var(--muted);margin-left:4px}.count{font-size:14px}.more>button{background:white;border:1px solid var(--line);min-width:66px;border-radius:10px;box-shadow:0 1px 3px #173e3404}.more.is-open>button{background:var(--soft)}
.video-card{border-color:#e0e6df;border-radius:14px;box-shadow:0 2px 8px #173e3406}.video-card h3{font-weight:600;color:#21372e}.saved-mark{background:#edf4ec;color:#365e47;border-radius:12px;padding:1px 5px;font-size:14px;line-height:1.4}.caption-toggle{text-decoration:none;font-weight:500;color:#4b6c5b}.caption-toggle:hover{background:#edf3eb;color:#173e34}.download-button,.downloaded .download-button{border-radius:9px;box-shadow:0 2px 4px #173e3414;letter-spacing:.2px}.download-button:active{box-shadow:none;background:#0e2c24}.download-help>summary{color:#64776c;font-size:15px}
.login-panel{border-color:#e0e6df;border-radius:18px;box-shadow:0 8px 28px #173e3406}.login-panel h1{color:#173e34}.login-panel label{font-size:18px}#code{background:#f9fbf7;border-color:#b8c8bc;border-radius:10px}#code:focus{background:white;border-color:#214f40}.login-panel .primary{background:#173e34;border-color:#173e34;border-radius:10px;box-shadow:0 2px 5px #173e3414}.login-help{color:#657168;font-size:15px}
@media(max-width:680px){.list-heading h1{font-size:22px}.list-heading h1 span{font-size:16px;margin-left:2px}.list-heading{gap:6px}.video-card{border-radius:13px}}
@media(max-width:350px){.list-heading h1{font-size:20px}.list-heading h1 span{font-size:15px}.more>button{min-width:60px;font-size:16px}}
/* Emerald palette and brief feedback; no repeating decorative motion. */
:root{--ink:#173e2d;--muted:#567463;--green:#087d4e;--line:#d2eadb;--bg:#f1faf4;--soft:#e0f6e8}
body{background:var(--bg)}.site-header{border-bottom-color:#cce8d7}.brand,.list-heading h1,.login-panel h1{color:#087d4e}.brand span,.list-heading h1 span{color:#567463}.more>button{border-color:#d0e9d9;color:#087d4e}.more.is-open>button{background:#e0f6e8}.menu-panel{border-color:#cfe7d8;box-shadow:0 8px 24px #07865314}.menu-panel button:hover{background:#e7f9ee}
.video-card{border-color:#d2eadb;box-shadow:0 2px 8px #07865308}.video-card h3{color:#1a4230}.saved-mark{background:#dcf7e5;color:#146b40}.caption-toggle{color:#24764e}.caption-toggle:hover{background:#e0f6e8;color:#087d4e}.download-button,.downloaded .download-button,.login-panel .primary{background:linear-gradient(135deg,#008653,#007b4b);border-color:#008653;color:white;box-shadow:0 3px 8px #00935a26}.download-button:hover,.downloaded .download-button:hover,.login-panel .primary:hover{background:#007b4b;border-color:#007b4b}.download-button:active,.login-panel .primary:active{background:#006b42;transform:scale(.97);box-shadow:0 1px 2px #00935a20}.download-help>summary{color:#29794f}.help-content{border-color:#d2eadb}
.login-panel{border-color:#d0e9d8;box-shadow:0 8px 28px #0086530a}#code{background:#f5fcf7;border-color:#b3d8c0}#code:focus{border-color:#008653;box-shadow:0 0 0 3px #12af6920}.message{background:#086c42;box-shadow:0 6px 20px #087d4e24}.message.error{background:#8c3527}
.primary,.caption-toggle,.more>button,.menu-panel button,input,.video-card{transition:background-color 150ms ease,border-color 150ms ease,box-shadow 150ms ease,transform 150ms ease}.primary:disabled{opacity:.8}.caption-toggle:active,.more>button:active{transform:scale(.97)}.more>button span{display:inline-block;transition:transform 160ms ease}.more.is-open>button span{transform:rotate(180deg)}
.login-panel{animation:panel-in 280ms ease-out both}.more.is-open .menu-panel{animation:menu-in 160ms ease-out both;transform-origin:top right}.download-help[open] .help-content{animation:panel-in 180ms ease-out both}.inline-error{animation:panel-in 140ms ease-out both}
.busy::before{content:'';display:inline-block;width:16px;height:16px;border:2px solid currentColor;border-right-color:transparent;border-radius:50%;margin-right:8px;vertical-align:-2px;animation:loading-spin 700ms linear infinite}.message.busy::before{width:14px;height:14px}
@keyframes panel-in{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}
@keyframes menu-in{from{opacity:0;transform:translateY(-4px) scale(.98)}to{opacity:1;transform:translateY(0) scale(1)}}
@keyframes loading-spin{to{transform:rotate(360deg)}}
@media(hover:hover) and (pointer:fine){.video-card:hover{border-color:#a4d7b8;box-shadow:0 4px 14px #00865312}.download-button:hover{transform:translateY(-1px)}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}
/* Delivery dates stay visible; downloading never hides or archives a card. */
.date-groups{display:grid;gap:20px}.date-group{min-width:0}.date-heading{display:flex;align-items:center;justify-content:space-between;gap:10px;margin:0 2px 8px}.date-heading h2{display:flex;align-items:center;flex-wrap:wrap;gap:8px;min-width:0;margin:0;font-size:17px;line-height:1.5;font-weight:600;color:var(--ink)}.date-heading time{font-variant-numeric:tabular-nums}.today-label{padding:1px 7px;border-radius:6px;background:#daf3e3;color:#087d4e;font-size:16px}.date-count{flex-shrink:0;font-size:14px;color:var(--muted)}
@media(max-width:680px){.date-groups{gap:18px}.date-heading h2{font-size:16px;gap:6px}.today-label{font-size:15px}.date-heading{margin-bottom:7px}}