:root{--ink:#17332f;--muted:#61756f;--green:#075b50;--green-2:#0f796a;--mint:#d7f3e9;--line:#dfe9e5;--paper:#f6f8f7;--white:#fff;--shadow:0 18px 60px rgba(20,69,59,.08)}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:Pretendard,"Noto Sans KR",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.65;word-break:keep-all}
button,select{font:inherit}
button{cursor:pointer}
a{color:inherit}
svg{display:block;width:100%;height:100%}
.container{width:min(1120px,calc(100% - 48px));margin-inline:auto}
.skip-link{position:absolute;z-index:99;top:-60px;left:16px;padding:10px 18px;background:#fff;border:2px solid var(--green)}
.skip-link:focus{top:12px}
:focus-visible{outline:3px solid #f5ae2e;outline-offset:3px}
.site-header{background:rgba(246,248,247,.94);border-bottom:1px solid #e8eeeb}
.header-inner{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:30px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-size:19px;font-weight:800;letter-spacing:-.06em;white-space:nowrap}
.brand-icon{display:grid;place-items:center;width:38px;height:38px;padding:7px;border-radius:12px;background:var(--green);color:white}
.header-inner nav{display:flex;gap:34px}
.header-inner nav a{text-decoration:none;color:#47635c;font-size:14px;font-weight:700}
.header-inner nav a:hover{color:var(--green);text-decoration:underline;text-underline-offset:5px}
.hero{display:flex;align-items:center;justify-content:space-between;min-height:310px;padding-top:42px;padding-bottom:35px}
.hero-copy{max-width:720px;position:relative;z-index:1}
.eyebrow{display:inline-flex;align-items:center;gap:9px;margin:0 0 14px;padding:5px 13px;border-radius:100px;background:#e1f1e9;color:var(--green);font-size:13px;font-weight:800}
.eyebrow-dot{width:7px;height:7px;background:#00a879;border-radius:50%}
h1,h2,h3,p{margin-top:0}
.hero h1{font-size:clamp(35px,4.6vw,57px);line-height:1.25;letter-spacing:-.075em;margin:0 0 15px;font-weight:850}
.hero h1 em{font-style:normal;color:var(--green)}
.hero-subtitle{font-size:17px;color:#506a62;margin:0 0 20px}
.hero-points{display:flex;flex-wrap:wrap;gap:8px}
.hero-points span{color:#457366;font-size:13px;font-weight:700}
.hero-points span+span::before{content:"·";margin-right:8px;color:#a8bfb5}
.hero-decor{width:220px;height:215px;display:grid;place-items:center;flex:none}
.decor-orbit{position:relative;width:172px;height:172px;border:2px solid #cbe7dc;border-radius:50%;display:grid;place-items:center;background:radial-gradient(circle,#e3f6ed 37%,transparent 38%)}
.decor-orbit:before,.decor-orbit:after{content:"";position:absolute;border:2px solid #d4ece2;border-radius:50%;inset:-24px}
.decor-orbit:after{inset:26px;background:var(--green);border:0;box-shadow:0 20px 40px rgba(7,91,80,.18)}
.decor-mic{z-index:1;display:block;width:60px;height:60px;color:#fff}
.decor-orbit i{position:absolute;width:13px;height:13px;border-radius:50%;background:#73c6a9;z-index:2}
.decor-orbit i:nth-of-type(1){left:-30px;top:34px}.decor-orbit i:nth-of-type(2){right:-35px;bottom:31px;width:9px;height:9px}.decor-orbit i:nth-of-type(3){right:13px;top:-26px;width:7px;height:7px}
.tester-section{scroll-margin-top:22px}
.tester-card{background:white;border:1px solid #e1ebe6;border-radius:24px;box-shadow:var(--shadow);padding:31px}
.tester-top{display:flex;align-items:flex-start;justify-content:space-between;gap:16px}
.section-kicker{color:var(--green-2);font-size:11px;font-weight:900;letter-spacing:.16em;margin-bottom:5px}
.tester-top h2{font-size:29px;line-height:1.3;letter-spacing:-.065em;margin-bottom:3px}
.tester-top p:last-child{color:var(--muted);font-size:14px;margin:0}
.privacy-pill{display:flex;align-items:center;gap:5px;padding:6px 10px;border-radius:100px;background:#e9f7ee;color:#247552;font-size:12px;font-weight:800;white-space:nowrap}
.privacy-pill svg{width:15px;height:15px}
.device-row{display:flex;align-items:center;gap:24px;margin:25px 0 19px}
.field{width:min(390px,100%)}
.field label{display:block;font-weight:800;font-size:13px;margin-bottom:6px}
.field select{appearance:none;width:100%;min-height:44px;padding:0 40px 0 13px;border:1px solid #bfd0c8;border-radius:9px;color:var(--ink);background:#fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='15' height='15' viewBox='0 0 20 20'%3E%3Cpath d='m5 7 5 5 5-5' fill='none' stroke='%23435e56' stroke-width='2' stroke-linecap='round'/%3E%3C/svg%3E") no-repeat right 14px center}
.field select:disabled{background-color:#f6f8f7;color:#64756e}
.field-help{font-size:12px;color:var(--muted);margin:5px 0 0}
.device-note{display:flex;align-items:center;gap:7px;color:#546b60;font-size:12px;margin-top:-6px}
.note-icon{display:grid;place-items:center;width:16px;height:16px;flex:none;border-radius:50%;border:1px solid #9cb4a9;font-size:11px;font-style:normal;font-weight:700}
.visual-panel{background:#f2f8f5;border:1px solid #e0efe6;border-radius:15px;padding:18px 22px 16px}
.visual-head{display:flex;justify-content:space-between;align-items:center;gap:12px;font-size:13px;font-weight:800}
.live-label{display:inline-flex;align-items:center;gap:7px;color:#546b60;font-size:12px}
.live-label span{width:7px;height:7px;border-radius:50%;background:#b6c5be}
.live-label.active{color:#117b5a}.live-label.active span{background:#26b980;box-shadow:0 0 0 4px #d1f3e3}
#waveform{display:block;width:100%;height:154px;margin:7px 0 4px}
.meter-row{display:flex;align-items:center;gap:14px;font-size:12px;font-weight:700;color:#517067}
.meter-row>span{white-space:nowrap}
.meter{height:9px;flex:1;overflow:hidden;border-radius:99px;background:#dceae3}
#meter-fill{height:100%;width:0;background:linear-gradient(90deg,#46c299,#0d886d);border-radius:inherit;transition:width .12s ease}
#current-level{width:38px;text-align:right;color:var(--green);font-size:14px}
.stats{display:grid;grid-template-columns:repeat(3,1fr);margin:18px 0;border:1px solid #e8efeb;border-radius:13px;overflow:hidden}
.stats>div{padding:13px 19px}
.stats>div+div{border-left:1px solid #e8efeb}
.stats span,.stats small{display:block;font-size:12px;color:var(--muted)}
.stats strong{display:block;font-size:24px;line-height:1.4;letter-spacing:-.05em;color:var(--green)}
.stats small{font-size:11px}
.diagnosis{display:flex;align-items:flex-start;gap:12px;padding:14px 17px;border-radius:12px;background:#eef6f2;color:#205f4d;margin-top:13px}
.diagnosis-icon{font-size:12px;margin-top:4px}
.diagnosis strong{font-size:14px}
.diagnosis p{font-size:12px;margin:1px 0 0}
.diagnosis.error{background:#fff0ed;color:#963f30}.diagnosis.caution{background:#fff7e6;color:#885a0a}.diagnosis.good{background:#e7f6ef;color:#137257}
.action-row{display:flex;gap:9px;margin-top:19px}
.button{display:inline-flex;align-items:center;justify-content:center;gap:7px;min-height:46px;padding:0 22px;border-radius:9px;font-weight:800;font-size:14px;border:1px solid transparent;transition:background .2s,transform .2s}
.button:not(:disabled):active{transform:translateY(1px)}
.button:disabled{cursor:not-allowed;opacity:.48}
.button.primary{background:var(--green);color:#fff}.button.primary:not(:disabled):hover{background:#03473f}
.button.secondary{background:white;border-color:#bed4c9;color:var(--green)}.button.secondary:not(:disabled):hover{background:#edf8f2}
.button.record{min-height:40px;border-color:#b6d9cb;background:#fff;color:var(--green);font-size:13px;padding:0 16px}.button.record:not(:disabled):hover{background:#ebf7f0}
.button.record.recording{border-color:#d67765;background:#fff0ed;color:#aa3c2c}
.tiny-note{font-size:11px;color:#546b60;margin:13px 0 0}
.record-card{display:flex;align-items:center;flex-wrap:wrap;gap:15px 24px;margin-top:22px;padding:19px 21px;background:#f6faf8;border:1px solid #e4eee8;border-radius:13px}
.record-copy{display:flex;align-items:center;gap:13px;flex:1;min-width:250px}
.record-icon{display:grid;place-items:center;width:42px;height:42px;flex:none;border-radius:12px;color:var(--green);background:#e4f2e9;font-size:23px}
.record-copy h3{font-size:15px;margin:0;letter-spacing:-.035em}.record-copy p{font-size:12px;color:var(--muted);margin:1px 0 0}
.record-actions{display:flex;align-items:center;gap:13px}.record-time{font-size:12px;font-weight:700;color:#546b60;font-variant-numeric:tabular-nums;white-space:nowrap}
.record-message{width:100%;font-size:12px;color:#8b4e29;margin:0}.record-message:empty{display:none}
#playback{width:100%;height:42px}
.hardware-note{font-size:12px;color:#62786e;margin:12px 5px 0}
.content-section{padding-top:103px;scroll-margin-top:25px}
.content-heading{margin-bottom:27px}.content-heading h2{font-size:31px;line-height:1.3;letter-spacing:-.065em;margin-bottom:8px}.content-heading>p:last-child{color:var(--muted);font-size:15px;margin:0}
.guide-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.guide-card{min-height:220px;padding:25px 24px;border-radius:17px;border:1px solid #e2ece5;background:#fff}
.guide-index{display:grid;place-items:center;width:31px;height:31px;border-radius:9px;background:#e5f5ec;color:#227759;font-size:12px;font-weight:900;margin-bottom:17px}
.guide-card h3{font-size:18px;letter-spacing:-.04em;margin-bottom:8px}.guide-card p{font-size:13px;color:#5a7067;margin:0}
.help-section{padding-top:93px}.help-list{background:#fff;border:1px solid #e1eae4;border-radius:17px;padding:0 29px}
.help-list article{display:flex;gap:25px;padding:22px 0}.help-list article+article{border-top:1px solid #edf1ee}
.help-list article>span{color:#5baa8c;font-size:14px;font-weight:900;line-height:1.8}.help-list h3{font-size:17px;letter-spacing:-.035em;margin:0 0 5px}.help-list p{color:#5b7068;font-size:13px;margin:0}
.faq-section{padding-top:90px}.faq-list{border-top:1px solid #dbe6df}.faq-list details{border-bottom:1px solid #dbe6df;background:transparent}.faq-list summary{cursor:pointer;list-style:none;position:relative;padding:19px 43px 19px 5px;font-size:15px;font-weight:800}.faq-list summary::-webkit-details-marker{display:none}.faq-list summary:after{content:"+";position:absolute;right:13px;top:14px;font-size:22px;font-weight:400;color:var(--green)}.faq-list details[open] summary:after{content:"−"}.faq-list details p{padding:0 45px 21px 5px;color:#5a7067;font-size:13px;margin:0}
.privacy-section{display:flex;align-items:center;justify-content:space-between;gap:30px;margin-top:100px;margin-bottom:100px;padding:32px 40px;border-radius:19px;background:#e8f4ed}
.privacy-section h2{font-size:25px;letter-spacing:-.055em;margin-bottom:7px}.privacy-section p:last-child{max-width:760px;color:#4f6b5d;font-size:13px;margin:0}.privacy-illustration{display:grid;place-items:center;width:88px;height:88px;flex:none;background:#d0e9d9;border:9px solid #f0faf2;border-radius:50%;color:#14775c;font-size:40px;font-weight:900}
.site-footer{border-top:1px solid #e0e9e3}.footer-inner{min-height:90px;display:flex;justify-content:space-between;align-items:center;gap:16px;color:#546b60;font-size:12px}.footer-inner a{color:#416c5d;text-decoration:none;font-weight:700}
@media(max-width:850px){.hero-decor{width:150px;transform:scale(.75);transform-origin:center}.device-note{display:none}.record-copy{min-width:220px}.record-actions{margin-left:55px}}
@media(max-width:650px){.container{width:min(1120px,calc(100% - 32px))}.header-inner{min-height:65px}.brand{font-size:17px}.brand-icon{width:34px;height:34px}.header-inner nav{gap:13px}.header-inner nav a{font-size:12px}.header-inner nav a:nth-child(2){display:none}.hero{min-height:auto;padding-top:42px;padding-bottom:30px}.hero h1{font-size:38px}.hero-subtitle{font-size:15px}.hero-decor{display:none}.tester-card{padding:20px;border-radius:17px}.tester-top h2{font-size:25px}.privacy-pill{font-size:0;padding:7px}.privacy-pill svg{width:16px;height:16px}.device-row{margin:21px 0 17px}.field{width:100%}.visual-panel{padding:15px 13px}.stats>div{padding:10px 9px}.stats strong{font-size:19px}.stats span,.stats small{font-size:10px}.action-row .button{flex:1;padding:0 10px}.record-card{padding:16px;gap:13px}.record-actions{margin-left:0;width:100%;justify-content:space-between}.content-section{padding-top:76px}.content-heading h2{font-size:26px}.guide-grid{grid-template-columns:1fr;gap:12px}.guide-card{min-height:0;padding:22px}.guide-index{margin-bottom:11px}.help-section,.faq-section{padding-top:76px}.help-list{padding:0 19px}.help-list article{gap:15px}.privacy-section{margin-top:76px;margin-bottom:76px;padding:25px}.privacy-illustration{display:none}.footer-inner{min-height:100px;flex-wrap:wrap;justify-content:flex-start;column-gap:20px;row-gap:0;padding:22px 0}.footer-inner span:nth-child(2){width:100%;order:3}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.button,#meter-fill{transition:none}}
.help-list a{color:var(--green);font-weight:800;text-underline-offset:3px}