@charset "UTF-8";
:root{--paper:#fcf9f4;--ink:#24211d;--muted:#71685f;--accent:#94603d;--line:#e5dacd;--soft:#f1e8dc;--white:#fffcf7;--serif:"Songti SC","Noto Serif CJK SC","Source Han Serif SC",SimSun,serif}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:90px}body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;line-height:1.75;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button,a,audio{touch-action:manipulation}a:focus-visible,button:focus-visible,summary:focus-visible,audio:focus-visible{outline:3px solid var(--accent);outline-offset:5px}img{max-width:100%;display:block}button{font:inherit}h1,h2,h3,p{margin:0}h1,h2,h3{line-height:1.35}h1,h2{font-weight:500;letter-spacing:-.04em}p{color:var(--muted)}.wrap{width:min(1160px,calc(100% - 64px));margin:auto}.skip{position:absolute;left:20px;top:-80px;padding:10px;background:var(--ink);color:white;z-index:10}.skip:focus{top:10px}.header{border-bottom:1px solid var(--line);background:rgba(252,249,244,.97);position:sticky;top:0;z-index:5}.nav{height:82px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:flex;align-items:center;gap:12px;white-space:nowrap}.brand img{width:43px;height:43px;border-radius:12px}.brand strong{font-size:21px;font-weight:650;letter-spacing:.05em}.brand small{display:block;font-size:10px;letter-spacing:.17em;line-height:1.2;color:var(--muted)}.nav-links{display:flex;gap:30px;font-size:13px}.nav-links a:hover,.text-link:hover{color:var(--accent)}.button{display:inline-flex;align-items:center;justify-content:center;gap:12px;padding:15px 24px;border-radius:9px;background:var(--ink);color:var(--white);font-size:14px;font-weight:600;border:1px solid var(--ink);transition:background .2s,transform .2s}.button:hover{background:#493a2d;transform:translateY(-2px)}.button.small{padding:9px 17px;font-size:12px}.button.secondary{background:transparent;color:var(--ink);border-color:#cec1b2}.button.secondary:hover{background:var(--soft)}.button svg{width:21px;height:21px;fill:currentColor}.eyebrow{font-size:11px;letter-spacing:.17em;color:var(--accent);font-weight:650;display:flex;align-items:center;gap:10px;margin-bottom:25px}.eyebrow::before{content:"";height:1px;width:28px;background:currentColor}.hero{display:grid;grid-template-columns:1.08fr 1fr;gap:30px;align-items:center;padding-top:63px;padding-bottom:60px;min-height:750px}.hero h1{font-family:var(--serif);font-size:clamp(40px,4.4vw,61px);line-height:1.35;letter-spacing:.025em;margin-bottom:25px}.hero h1 em{font-style:normal;color:var(--accent)}.hero-intro{font-size:16px;max-width:450px;line-height:1.95}.actions{display:flex;align-items:center;flex-wrap:wrap;gap:12px;margin-top:31px}.meta{font-size:12px;letter-spacing:.025em;margin-top:15px;color:var(--muted)}.hero-note{display:flex;align-items:center;gap:9px;margin-top:44px;font-size:12px;color:var(--muted)}.dot{height:6px;width:6px;border-radius:50%;background:#65816a}.hero-art{min-height:615px;position:relative;display:flex;align-items:center;justify-content:center}.halo{position:absolute;width:440px;height:490px;border-radius:48% 48% 44% 44%;background:#efe0cc;transform:rotate(-8deg);opacity:.75}.phone{position:relative;background:#eee7dc;border:5px solid #4b443c;border-radius:42px;padding:8px;box-shadow:0 28px 65px #60412026,0 2px 3px #261c2426;width:258px;transform:rotate(5deg);overflow:hidden}.phone img{width:100%;border-radius:28px;aspect-ratio:393/852;object-fit:cover}.phone::before{content:"";position:absolute;width:62px;height:6px;background:#4b443c;border-radius:10px;top:11px;left:calc(50% - 31px);z-index:1}.floating-note{position:absolute;left:0;bottom:125px;max-width:215px;background:#fffcf8;border:1px solid var(--line);padding:16px 20px;border-radius:13px;box-shadow:0 12px 30px #664b2510;transform:rotate(-5deg);font-size:13px}.floating-note span{display:block;font-size:10px;color:var(--accent);letter-spacing:.08em;margin-bottom:5px}.art-label{position:absolute;right:0;top:55px;writing-mode:vertical-rl;letter-spacing:.24em;font-size:10px;color:var(--accent)}.art-caption{position:absolute;bottom:0;font-size:10px;color:var(--muted);letter-spacing:.1em}.facts-strip{border-top:1px solid var(--line);border-bottom:1px solid var(--line);display:grid;grid-template-columns:repeat(4,1fr);padding:26px 0}.facts-strip div{text-align:center;border-right:1px solid var(--line);font-size:13px}.facts-strip div:last-child{border:0}.facts-strip span{color:var(--muted);font-size:10px;display:block;letter-spacing:.04em;margin-top:4px}.section{padding:100px 0}.section-heading{display:flex;justify-content:space-between;align-items:end;gap:40px;margin-bottom:40px}.section h2{font-size:36px;font-family:var(--serif);letter-spacing:.035em}.section-heading p{max-width:370px;font-size:14px}.section .eyebrow{margin-bottom:15px}.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:38px}.step{border-top:1px solid var(--line);padding-top:22px}.step-number{font-family:Georgia,serif;font-size:33px;color:var(--accent);margin-bottom:22px;display:block}.step h3{font-size:18px;font-weight:550;margin-bottom:12px}.step p{font-size:14px;line-height:1.95}.listen-section{background:var(--soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.listen-grid{display:grid;grid-template-columns:1fr 1fr;gap:75px;align-items:center}.listen-grid h2{margin-bottom:20px}.listen-grid p{font-size:14px;line-height:2}.audio-card{background:var(--paper);border:1px solid #dccab5;border-radius:18px;padding:30px}.audio-top{display:flex;gap:15px;align-items:center;margin-bottom:20px}.audio-symbol{display:flex;align-items:center;justify-content:center;gap:4px;width:55px;height:55px;border-radius:50%;background:#e6d4bf}.audio-symbol i{display:block;width:2px;height:15px;background:var(--accent)}.audio-symbol i:nth-child(2n){height:26px}.audio-symbol i:nth-child(3n){height:36px}.audio-card h3{font-size:17px;font-weight:500}.audio-card small{color:var(--muted);font-size:11px}.audio-card audio{width:100%;height:44px;display:block;margin:20px 0 12px}.sample-text{font-family:var(--serif);font-size:15px!important;color:#665341;line-height:1.9!important}.audio-caption{font-size:11px!important}.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:42px}.feature{padding:25px 0;border-top:1px solid var(--line)}.feature-icon{color:var(--accent);font-size:22px;margin-bottom:18px;display:block;font-family:Georgia,serif}.feature h3{font-size:19px;font-weight:500;margin-bottom:12px}.feature p{font-size:14px;line-height:1.95}.guide-section{padding-top:0}.guides{display:grid;grid-template-columns:1fr 1fr;gap:25px}.guide-card{display:block;border:1px solid var(--line);border-radius:12px;padding:30px;background:#f7f1e8;transition:background .2s}.guide-card:hover{background:#efe2d1}.guide-card small{color:var(--accent);font-size:11px;letter-spacing:.06em}.guide-card h3{font-size:23px;font-family:var(--serif);font-weight:500;margin:17px 0}.guide-card p{font-size:13px;max-width:360px}.guide-card .arrow{display:block;margin-top:22px;color:var(--accent);font-size:13px}.faq-layout{display:grid;grid-template-columns:.7fr 1.3fr;gap:75px}.faq-layout h2{margin-bottom:22px}.faq-layout .lead{font-size:14px;max-width:250px}.faq-list details{border-bottom:1px solid var(--line);padding:19px 0}.faq-list details:first-child{border-top:1px solid var(--line)}.faq-list summary{cursor:pointer;font-size:15px;list-style:none;display:flex;justify-content:space-between;gap:24px;line-height:1.7}.faq-list summary::-webkit-details-marker{display:none}.faq-list summary::after{content:"+";font-size:20px;color:var(--accent);flex-shrink:0}.faq-list details[open] summary::after{content:"−"}.faq-list details p{font-size:14px;margin:13px 30px 4px 0;line-height:1.95}.product-facts{margin-top:30px;font-size:12px}.product-facts div{display:flex;gap:20px;border-bottom:1px solid var(--line);padding:10px 0}.product-facts dt{color:var(--muted);min-width:70px}.product-facts dd{margin:0}.endnote{padding:65px 25px;text-align:center;background:#ebe0d1;border-radius:20px;margin-bottom:70px}.endnote img{width:65px;height:65px;border-radius:16px;margin:0 auto 24px}.endnote h2{font-size:33px;letter-spacing:.05em;font-family:var(--serif);margin-bottom:17px}.endnote p{font-size:14px}.endnote .actions{justify-content:center;margin-top:25px}.footer{border-top:1px solid var(--line);padding:30px 0 35px}.footer-top{display:flex;justify-content:space-between;gap:24px;align-items:center}.footer-links{display:flex;gap:22px;font-size:12px;color:var(--muted);flex-wrap:wrap}.footer-meta{display:flex;justify-content:space-between;gap:20px;margin-top:26px;font-size:10px;color:var(--muted);flex-wrap:wrap}.footer-meta a:hover{text-decoration:underline}.article{width:min(760px,calc(100% - 48px));margin:65px auto 85px}.breadcrumbs{font-size:12px;color:var(--muted);margin-bottom:40px}.breadcrumbs a{text-decoration:underline;text-underline-offset:4px}.article h1{font-size:40px;font-family:var(--serif);line-height:1.5;margin-bottom:18px;letter-spacing:.02em}.article .intro{font-size:17px;margin:30px 0 45px}.article h2{font-size:25px;font-family:var(--serif);margin:38px 0 17px}.article p{margin-bottom:15px;line-height:2}.article a:not(.button){color:var(--accent);text-decoration:underline;text-underline-offset:3px}.article ul{color:var(--muted);padding-left:22px}.article .related{margin-top:45px;padding-top:25px;border-top:1px solid var(--line)}.article .step-heading{display:flex;align-items:baseline;gap:16px}.article .step-heading span{font-family:Georgia,serif;color:var(--accent);font-size:18px}.error{text-align:center;min-height:60vh;padding-top:90px}.error h1{font-size:52px;margin-bottom:15px}.error .button{margin-top:30px}
@media(min-width:1500px){.hero{min-height:820px}.hero-art{min-height:650px}.phone{width:275px}}
@media(max-width:900px){.wrap{width:calc(100% - 40px)}.nav-links{gap:19px}.hero{gap:8px;min-height:680px;padding-top:38px}.hero h1{font-size:42px}.hero-intro{font-size:14px}.hero-art{min-height:570px}.phone{width:222px}.halo{width:320px;height:400px}.floating-note{left:-10px;bottom:90px;font-size:11px;padding:12px}.art-label{right:5px}.listen-grid{gap:30px}.faq-layout{gap:35px}.feature-grid{gap:22px}.section{padding:75px 0}.guide-section{padding-top:0}}
@media(max-width:640px){.wrap{width:calc(100% - 40px)}.nav{height:70px;gap:10px}.brand{gap:9px}.brand img{width:36px;height:36px}.brand strong{font-size:18px}.brand small{font-size:9px}.nav-links{display:none}.button.small{padding:8px 13px}.hero{display:block;padding-top:43px;padding-bottom:32px;min-height:0}.hero h1{font-size:42px;line-height:1.43;margin-bottom:22px}.eyebrow{font-size:10px;margin-bottom:21px}.hero-intro{font-size:14px;max-width:100%}.actions{gap:9px;margin-top:26px}.button{font-size:13px;padding:13px 17px}.hero-note{margin-top:24px}.hero-art{margin:27px 0 0;min-height:530px}.phone{width:216px;transform:rotate(4deg);border-radius:36px;padding:7px}.phone img{border-radius:23px}.halo{width:290px;height:390px}.floating-note{left:0;bottom:73px;max-width:185px}.art-label{right:4px;top:50px}.art-caption{bottom:0;font-size:9px}.facts-strip{grid-template-columns:1fr 1fr;row-gap:22px;padding:24px 0}.facts-strip div:nth-child(2){border:0}.facts-strip div{font-size:12px}.section{padding:60px 0}.section h2{font-size:29px;line-height:1.5}.section-heading{display:block;margin-bottom:29px}.section-heading p{margin-top:18px}.steps{grid-template-columns:1fr;gap:25px}.step{padding-left:50px;position:relative;padding-top:22px}.step-number{position:absolute;left:0;top:20px;font-size:25px}.step h3{font-size:17px}.listen-grid{grid-template-columns:1fr;gap:28px}.audio-card{padding:24px}.feature-grid{grid-template-columns:1fr;gap:5px}.feature{display:grid;grid-template-columns:35px 1fr;gap:6px 12px;padding:24px 0}.feature-icon{grid-row:1/3;margin:0}.feature h3{font-size:18px;margin:0 0 5px}.feature p{grid-column:2}.guide-section{padding-top:0}.guides{grid-template-columns:1fr;gap:16px}.guide-card{padding:24px}.guide-card h3{font-size:21px}.faq-layout{grid-template-columns:1fr;gap:28px}.faq-layout .lead{max-width:none}.product-facts{margin-top:22px}.endnote{border-radius:14px;padding:40px 21px;margin-bottom:50px}.endnote h2{font-size:27px}.footer-top{align-items:flex-start;flex-direction:column}.footer-links{gap:16px}.footer-meta{font-size:10px;gap:8px}.article{margin:35px auto 55px}.article h1{font-size:30px}.article .intro{font-size:16px}.article h2{font-size:22px}.breadcrumbs{margin-bottom:28px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important;animation:none!important}}

.phone img{height:auto}
@media(max-width:640px){.hero h1{font-size:clamp(28px,9vw,36px)}}