:root { color-scheme: light; --meeting-green: #19735c; }
* { box-sizing: border-box; }
body { margin: 0; background: #f4f6f4; color: #17322d; font-family: system-ui, sans-serif; }
.top { display: flex; align-items: center; justify-content: space-between; padding: 20px max(5vw,20px); border-bottom: 1px solid #dce5df; background: #fff; gap: 16px; }
.top>a:last-child { color: #40645a; font-size: 14px; }
.brand { font-size: 26px; font-weight: 800; color: #19735c; text-decoration: none; display: flex; align-items: center; gap: 14px; }
.brand>span { font-size: 21px; color: #17322d; line-height: 1.1; }
.brand small { display: block; font-size: 9px; letter-spacing: .12em; font-weight: 500; margin-top: 7px; }
main { max-width: 1180px; margin: auto; padding: 42px 24px; }
.intro { max-width: 750px; margin-bottom: 30px; }
.eyebrow { font-size: 11px; letter-spacing: .16em; color: #497569; }
h1 { font-size: clamp(34px,5vw,58px); letter-spacing: -.045em; line-height: 1.06; margin: 16px 0; }
p { line-height: 1.6; }
.intro p { color: #597369; max-width: 640px; font-size: 17px; }
.notice { padding: 14px 18px; border-radius: 12px; background: #e4eee8; margin: 16px 0; line-height: 1.5; font-size: 14px; }
.notice.error { background: #ffebe6; color: #943d28; }
.meeting-bar { display: flex; align-items: flex-end; gap: 12px; flex-wrap: wrap; margin: 25px 0; }
.meeting-bar>label { flex: 1; min-width: 220px; }
label { display: flex; flex-direction: column; gap: 8px; font-size: 13px; font-weight: 600; }
input,select { width: 100%; min-height: 46px; padding: 10px 12px; border: 1px solid #cddcd4; border-radius: 8px; background: #fff; color: #17322d; font: 16px system-ui,sans-serif; }
input:focus,select:focus,button:focus-visible { outline: 3px solid #9bcabd; outline-offset: 2px; }
button { cursor: pointer; background: var(--meeting-green); border: 1px solid var(--meeting-green); border-radius: 8px; padding: 12px 18px; min-height: 46px; color: #fff; font: 600 14px system-ui,sans-serif; }
button.secondary { color: #295a4b; background: #fff; border-color: #cddcd4; }
button:disabled { cursor: wait; opacity: .5; }
.setup { padding: 26px; border-radius: 18px; background: #fff; border: 1px solid #dce5df; }
.section-heading h2 { margin: 0 0 8px; font-size: 21px; letter-spacing: -.02em; }
.section-heading p { margin: 0; color: #697e75; font-size: 14px; }
.fields { display: grid; grid-template-columns: repeat(4,1fr); gap: 14px; margin: 24px 0 18px; }
.provider-fields { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-bottom: 14px; }
.provider-help { color: #697e75; font-size: 12px; line-height: 1.6; }
.network-check { display: flex; align-items: center; flex-wrap: wrap; gap: 15px; margin-top: 22px; padding: 20px; background: #e9efea; border-radius: 14px; font-size: 13px; }
.network-check>div { flex: 1; min-width: 210px; }
.network-check p { margin-bottom: 0; }
.network-check a { color: #295a4b; }
.glossary span { font-weight: 400; color: #697e75; }
.setup-actions { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-top: 22px; }
small { color: #697e75; line-height: 1.5; }
.conversation { margin-top: 38px; }
.channels { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 18px; margin-top: 18px; }
.channel { min-width: 0; padding: 24px; border-radius: 18px; background: #132e28; color: #f1f7f3; scroll-margin-top: 20px; }
.channel h3 { font-size: 20px; margin: 0; overflow-wrap: anywhere; }
.channel-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.channel-status { padding: 5px 8px; font-size: 11px; border-radius: 8px; background: #244d3f; }
.channel-pair { color: #a1c5b6; font-size: 12px; margin: 12px 0 20px; }
.translation { font-size: clamp(23px,3vw,29px); line-height: 1.5; min-height: 120px; white-space: pre-wrap; overflow-wrap: anywhere; }
.original { color: #a8c3b6; font-size: 16px; line-height: 1.6; margin-top: 22px; padding-top: 18px; border-top: 1px solid #355248; overflow-wrap: anywhere; }
.channel-actions { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 22px; }
.channel-actions button { padding: 9px 12px; font-size: 12px; min-height: 42px; }
.channel-meter { display: block; width: 100%; height: 5px; margin-top: 16px; }
.channel-detail { font-size: 12px; color: #a1c5b6; margin-top: 10px; }
.empty { grid-column: 1/-1; padding: 28px; text-align: center; border: 1px dashed #b9cec2; border-radius: 14px; color: #697e75; }
.usage { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; margin-top: 34px; font-size: 12px; color: #697e75; }
footer { padding: 22px; border-top: 1px solid #dce5df; color: #697e75; text-align: center; font-size: 12px; }
footer a { color: #295a4b; }
@media(max-width:850px) { .fields { grid-template-columns: repeat(2,1fr); } .usage { grid-template-columns: 1fr; gap: 0; } }
@media(max-width:580px) { main { padding: 28px 16px; } .setup { padding: 20px 16px; } .channels { grid-template-columns: 1fr; } .fields,.provider-fields { grid-template-columns: 1fr; } .meeting-bar>button { flex: 1; } .setup-actions>button { width: 100%; } .top { padding: 16px; } }