:root{--brand:#3d975b;--brand-dark:#2e7a47;--text:#1e2c26;--muted:#737e77;--line:#e6ece6;--orange:#ff7c00}
*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;scroll-padding-top:88px}body{font-family:"PingFang SC","Microsoft YaHei",system-ui,sans-serif;color:var(--text);background:#fff;line-height:1.6;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button{font:inherit}a,button{touch-action:manipulation;-webkit-tap-highlight-color:transparent}img{display:block;max-width:100%}[hidden]{display:none!important}:focus-visible{outline:3px solid var(--brand);outline-offset:5px}.container{max-width:1120px;padding:0 36px;margin:auto}.skip-link{position:fixed;top:10px;left:12px;z-index:100;padding:10px 18px;background:white;transform:translateY(-180%)}.skip-link:focus{transform:none}.nav{border-bottom:1px solid var(--line);background:#fff}.nav-inner{height:82px;display:flex;align-items:center;justify-content:space-between}.brand{display:inline-flex;align-items:center;gap:11px;font-size:21px;font-weight:750;letter-spacing:.5px}.brand img{height:42px;width:42px;object-fit:contain}.nav nav{display:flex;align-items:center;gap:32px;font-size:14px}.nav nav>a:first-child{color:var(--muted)}.nav nav>a:hover{color:var(--brand)}.nav-download{display:flex;align-items:center;gap:20px;padding:9px 17px;border:1px solid var(--line);border-radius:30px}.nav-download span{color:var(--brand)}.hero{overflow:hidden;background:radial-gradient(ellipse at 78% 48%,#edf6eb 0,transparent 48%),linear-gradient(115deg,#fffcf8,#fff 60%)}.hero-inner{display:grid;grid-template-columns:1.12fr 1fr;align-items:center;gap:50px;padding-top:64px;padding-bottom:64px;min-height:660px}.eyebrow{display:inline-flex;align-items:center;gap:9px;background:#edf5e9;color:var(--brand-dark);border-radius:30px;padding:7px 14px;font-size:12px;letter-spacing:1px;margin-bottom:24px}.eyebrow>span{color:var(--brand);font-size:17px}h1{font-size:clamp(34px,4vw,49px);font-weight:750;line-height:1.4;letter-spacing:-1.4px}h1>span{display:block}.accent{color:var(--brand)}.hero-desc{font-size:15px;line-height:1.9;max-width:370px;color:#657069;margin:22px 0 30px}.hero-actions{display:flex;align-items:center;gap:27px}.btn{min-height:48px;display:inline-flex;align-items:center;justify-content:center;gap:18px;border:1px solid transparent;border-radius:30px;padding:12px 27px;font-size:14px;font-weight:600;transition:background .18s,transform .18s}.btn-primary{color:#fff;background:var(--brand);box-shadow:0 7px 18px #3d975b1c}.btn-primary:hover{background:var(--brand-dark);transform:translateY(-2px)}.text-link{display:inline-flex;gap:16px;align-items:center;font-size:13px}.text-link:hover{color:var(--brand)}.platform-note{font-size:11px;letter-spacing:1px;color:var(--muted);margin-top:21px}.hero-visual{position:relative;display:flex;align-items:center;justify-content:center;min-height:520px}.visual-circle{position:absolute;width:410px;height:410px;border-radius:50%;border:1px solid #d9e9d7;background:#e9f2e4;box-shadow:0 0 0 28px #f2f7ef88}.phone{width:252px;height:500px;border:7px solid #28332c;border-radius:39px;position:relative;background:#fbfcf9;box-shadow:16px 24px 40px #294b2918;overflow:hidden;transform:rotate(5deg)}.phone-status{height:39px;display:flex;align-items:center;justify-content:space-between;padding:0 17px;font-size:9px;font-weight:700}.phone-island{height:17px;width:65px;background:#28332c;border-radius:15px;position:absolute;left:50%;transform:translateX(-50%)}.chat-header{height:58px;display:flex;align-items:center;justify-content:space-between;margin:0 14px;border-bottom:1px solid var(--line);font-size:22px}.chat-header>div{font-size:12px;font-weight:650;text-align:center}.chat-header small{font-size:8px;color:var(--brand);display:block;font-weight:400;margin-top:1px}.conversation{padding:12px 11px}.chat-time{text-align:center;font-size:8px;color:#a2aaa2;margin-bottom:14px}.message{display:flex;gap:7px;align-items:flex-start;margin-bottom:14px}.avatar{display:grid;place-items:center;width:27px;height:28px;border-radius:8px;font-size:10px;flex-shrink:0}.peach{background:#ffead5;color:#b97024}.mint{background:#deedd8;color:#4b7a44}.bubble{background:#fff;border:1px solid #e8ece5;border-radius:0 10px 10px;padding:9px 10px;font-size:9px;line-height:1.8}.sent{justify-content:flex-end}.sent .bubble{border-color:#cce4c2;background:#deefd6;border-radius:10px 0 10px 10px}.voice{display:flex;gap:8px;align-items:center;color:#477e45;height:34px}.voice small{font-size:8px;color:#7e897d}.wave{letter-spacing:1px;font-size:9px}.shared-moment{width:155px;border:1px solid #e4e9df;background:white;border-radius:11px;overflow:hidden;margin-left:34px}.shared-moment p{font-size:8px;padding:8px;color:#65715f}.landscape{height:68px;background:#e8f0de;position:relative;overflow:hidden}.sun{width:23px;height:23px;border-radius:50%;background:#f5bd71;position:absolute;top:13px;right:26px}.hill{position:absolute;bottom:-40px;left:-20px;width:180px;height:90px;border-radius:50%;background:#719970;transform:rotate(15deg)}.hill-back{background:#abc1a0;left:50px;bottom:-22px;transform:rotate(-25deg)}.phone-input{position:absolute;bottom:19px;left:0;right:0;display:flex;align-items:center;gap:9px;padding:10px 12px;border-top:1px solid var(--line);background:#fbfcf9;color:#7c897c;font-size:20px}.input-placeholder{flex:1;background:#fff;border:1px solid var(--line);border-radius:15px;font-size:8px;padding:5px 10px;color:#adb5ac}.home-indicator{position:absolute;bottom:6px;left:50%;transform:translateX(-50%);width:78px;height:3px;border-radius:3px;background:#28332c}.floating-message{position:absolute;bottom:59px;left:-13px;display:flex;align-items:center;gap:12px;background:#ffffffed;border:1px solid #e8efe4;border-radius:14px;padding:14px 18px;box-shadow:0 10px 35px #39572a0b;font-size:12px}.connection-icon{display:grid;place-items:center;background:#eaf4e5;color:var(--brand);width:33px;height:33px;border-radius:50%;font-size:19px}.floating-message small{display:block;color:var(--muted);font-size:9px;margin-top:3px;letter-spacing:1px}.preview-caption{position:absolute;bottom:-5px;left:50%;transform:translateX(-50%);font-size:9px;color:#919b91}.features-section{padding:76px 0 70px}.section-heading{text-align:center;margin-bottom:42px}.section-kicker{font-size:11px;letter-spacing:2px;color:var(--brand);margin-bottom:10px}h2{font-size:28px;letter-spacing:-.5px;font-weight:650}.feature-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:30px}.feature{padding:0 18px;border-left:1px solid var(--line)}.feature:first-child{border:0}.feature-icon{color:var(--brand);margin-bottom:16px}.feature-icon svg{display:block;width:25px;height:25px}.feature h3{font-size:15px;font-weight:650;margin-bottom:8px}.feature p{font-size:12px;color:var(--muted);line-height:1.9}.download-section{padding:0 0 65px}.download-panel{background:#f1f6ed;border:1px solid #e8efe2;border-radius:24px;padding:42px 45px;display:flex;align-items:center;justify-content:space-between;gap:30px}.download-copy>p:last-child{font-size:12px;color:var(--muted);margin-top:10px}.download-options{display:flex;gap:14px}.download-option{text-align:center;min-width:158px}.download-option .btn{width:100%;padding:12px 20px;gap:9px}.download-option svg{width:20px;height:20px;flex-shrink:0}.download-option small{display:block;font-size:10px;color:#6a7768;margin-top:9px}.btn:disabled{cursor:default;color:#64765e;background:#e3ebde;border-color:#d7e1d1;box-shadow:none}.footer{border-top:1px solid var(--line)}.footer-inner{min-height:88px;display:flex;align-items:center;gap:24px;flex-wrap:wrap;padding-top:20px;padding-bottom:20px}.footer-brand{font-size:15px}.footer-brand img{height:27px;width:27px}.footer p{font-size:11px;color:var(--muted)}.copyright{margin-left:auto;letter-spacing:.5px}.noscript-note{text-align:center;padding:16px;font-size:12px}
@media(max-width:900px){.hero-inner{gap:20px}.floating-message{left:-15px;padding:12px}.download-panel{padding:34px 30px}.download-options{gap:10px}.download-option{min-width:142px}.download-copy h2{font-size:25px}.feature-grid{gap:15px}.feature{padding:0 12px}}
@media(max-width:700px){.container{padding-left:24px;padding-right:24px}.nav-inner{height:70px}.brand{font-size:18px}.brand img{width:35px;height:35px}.nav nav{gap:20px;font-size:12px}.nav-download{padding:7px 12px;gap:12px}.hero-inner{grid-template-columns:minmax(0,1fr);text-align:center;gap:34px;padding-top:46px;padding-bottom:36px;min-height:0}.eyebrow{font-size:10px;padding:5px 12px;margin-bottom:20px}h1{font-size:clamp(29px,7.5vw,42px);letter-spacing:-1px}.hero-desc{font-size:13px;max-width:310px;margin:18px auto 25px}.hero-actions{justify-content:center;gap:27px}.btn{font-size:13px;min-height:46px;padding:11px 25px}.platform-note{font-size:10px;margin-top:17px}.hero-visual{min-height:456px;max-width:350px;width:100%;margin:auto}.phone{transform:rotate(3deg) scale(.88);transform-origin:center;position:absolute;top:-22px}.visual-circle{width:310px;height:310px;box-shadow:0 0 0 18px #f2f7ef88}.floating-message{bottom:57px;left:0;font-size:11px;padding:10px 14px;text-align:left}.floating-message small{font-size:8px}.connection-icon{width:29px;height:29px}.preview-caption{bottom:0}.features-section{padding:46px 0}.section-heading{margin-bottom:30px}.section-kicker{font-size:10px;letter-spacing:1.5px}h2{font-size:23px}.feature-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px 24px}.feature,.feature:first-child{border:0;padding:0}.feature-icon{margin-bottom:10px}.feature h3{font-size:14px;margin-bottom:4px}.feature p{font-size:11px}.download-section{padding-bottom:38px}.download-panel{display:block;text-align:center;padding:30px 20px;border-radius:20px}.download-options{justify-content:center;margin-top:25px;gap:12px}.download-option{min-width:0;flex:1;max-width:190px}.download-option .btn{font-size:11px;padding:11px 8px;gap:6px;min-height:45px}.download-option small{font-size:9px}.download-option svg{width:18px;height:18px}.footer-inner{gap:12px;min-height:78px}.footer-brand{font-size:13px;gap:7px}.footer-brand img{width:25px;height:25px}.footer p{font-size:10px}.footer p:not(.copyright){width:100%}}
@media(max-width:360px){.container{padding-left:20px;padding-right:20px}.nav nav{gap:12px}.nav-download{gap:6px}.brand{gap:7px;font-size:17px}.hero-visual{min-height:440px}.floating-message{left:-6px}.download-panel{padding-left:15px;padding-right:15px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important}}

/* 完整功能：详情、安装帮助、FAQ 与分享，保持首页轻量。 */
.feature-grid{grid-template-columns:repeat(3,minmax(0,1fr));row-gap:30px}
.feature:nth-child(3n+1){border-left:0}
.feature-button{font:inherit;color:inherit;border:0;background:none;text-align:left;cursor:pointer;min-height:40px;display:flex;align-items:center;gap:12px}
.feature-button::after{content:'↗';font-size:12px;color:var(--brand);font-weight:400}
.feature-button:hover{color:var(--brand)}
.feature h3{margin-bottom:0}.feature-icon{margin-bottom:5px}
.btn{cursor:pointer}.btn-pending{background:#e3ebde;color:#53694b;border-color:#d7e1d1}
.btn-pending:hover{background:#d7e5cf}
.download-options{align-items:flex-start}.download-option{max-width:230px}
.package-detail-link,.plain-button,.download-tools button{font:inherit;border:0;background:transparent;color:var(--brand-dark);cursor:pointer;text-underline-offset:4px}
.package-detail-link{display:inline-block;font-size:11px;padding:8px 6px;margin-top:2px;min-height:34px}
.package-detail-link:hover,.plain-button:hover,.download-tools button:hover{text-decoration:underline}
.download-tools{display:flex;align-items:center;justify-content:center;gap:18px;padding-top:12px;color:#c3cec0}
.download-tools button{font-size:12px;min-height:44px}
.recommended .download-meta{color:var(--brand-dark);font-weight:550}
body.dialog-open{overflow:hidden}
.detail-dialog{border:1px solid var(--line);border-radius:22px;padding:28px;width:calc(100% - 40px);max-width:540px;max-height:85vh;max-height:85dvh;margin:auto;color:var(--text);background:white;box-shadow:0 25px 100px #14251626;overflow:auto;overscroll-behavior:contain}
.detail-dialog::backdrop{background:#14251666;backdrop-filter:blur(4px)}
.dialog-heading{display:flex;align-items:center;justify-content:space-between;gap:15px;margin-bottom:20px}
.dialog-heading h2{font-size:21px}.dialog-close{display:grid;place-items:center;flex-shrink:0;width:40px;height:40px;border-radius:50%;border:0;background:#f1f5ee;color:#65715f;font-size:26px;line-height:1;cursor:pointer}
.dialog-close:hover{background:#e5eedf}.dialog-intro,.feature-detail{font-size:13px;line-height:1.9;color:#657069;margin-bottom:18px}
.package-meta{display:grid;grid-template-columns:90px minmax(0,1fr);font-size:12px;line-height:1.9;margin-bottom:20px}
.package-meta dt,.package-meta dd{padding:10px 0;border-bottom:1px solid var(--line)}
.package-meta dt{color:var(--muted)}.package-meta dd{overflow-wrap:anywhere}.hash-value{font-family:ui-monospace,monospace;font-size:11px}
.dialog-actions{display:flex;flex-wrap:wrap;align-items:center;gap:12px 20px}.dialog-actions .btn{padding:10px 24px}.plain-button{font-size:12px;min-height:40px}
.guide-section+.guide-section{margin-top:24px;padding-top:22px;border-top:1px solid var(--line)}
.guide-section h3{font-size:15px;margin-bottom:12px}.guide-steps{padding-left:20px;font-size:13px;color:#657069}.guide-steps li{margin-bottom:10px;padding-left:4px}
.dialog-note{font-size:11px;color:var(--muted);margin-top:12px}.availability-note{font-size:11px;color:var(--brand-dark);padding:8px 12px;background:#f1f6ed;border-radius:8px;margin-top:12px}.guide-recommended h3{color:var(--brand-dark)}
.faq-item{border-bottom:1px solid var(--line)}.faq-item:last-child{border:0}.faq-item summary{font-size:13px;cursor:pointer;padding:16px 0;line-height:1.8}.faq-item summary::marker{color:var(--brand)}.faq-item p{font-size:12px;line-height:1.9;color:#657069;padding-bottom:16px;overflow-wrap:anywhere}
.toast{position:fixed;z-index:100;left:50%;bottom:24px;transform:translateX(-50%);max-width:calc(100% - 40px);width:max-content;border-radius:12px;background:#23392b;color:#fff;padding:12px 18px;font-size:12px;box-shadow:0 5px 20px #14251626}
.dialog-feedback{font-size:12px;color:var(--brand-dark);padding:10px 12px;background:#f1f6ed;border-radius:8px;margin-top:16px}
.copy-field{display:block;width:100%;min-height:90px;border:1px solid var(--line);padding:10px;border-radius:8px;resize:vertical;font-size:12px;margin:14px 0;overflow-wrap:anywhere}
@media(max-width:700px){.feature-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}.feature{border:0}.feature-button{min-height:40px;gap:10px}.feature-icon{margin-bottom:2px}.download-tools{gap:12px}.download-tools button{font-size:11px}.detail-dialog{padding:22px;max-height:88dvh}.dialog-heading h2{font-size:19px}.package-meta{grid-template-columns:75px minmax(0,1fr);font-size:11px}.dialog-actions{gap:10px 16px}.package-detail-link{font-size:10px}}
.share-label{display:block;font-size:12px;color:var(--muted);margin-bottom:8px}.share-url{font:inherit;width:100%;padding:12px;border:1px solid var(--line);border-radius:10px;font-size:12px;color:var(--text);background:#f9fbf7;margin-bottom:20px}

/* 官网布局：产品概览、完整功能、使用帮助与页脚。 */
.nav{position:sticky;top:0;z-index:50;background:#ffffffed;backdrop-filter:blur(14px)}
.nav-inner{position:relative}.nav nav>a{color:#5f6c64}.nav nav>a.nav-download{color:var(--text)}
.menu-toggle{display:none}.hero-desc{max-width:420px}.platform-note{letter-spacing:.3px}
.about-section{padding:74px 0 0}.about-heading{display:grid;grid-template-columns:1fr 1.2fr;align-items:center;gap:60px}
.about-heading>p{font-size:14px;line-height:2;color:#647168}.about-heading h2{font-size:28px;line-height:1.6}
.scenario-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:32px;margin-top:34px;padding-bottom:52px;border-bottom:1px solid var(--line)}
.scenario{position:relative;padding-left:40px}.scenario-number{position:absolute;top:2px;left:0;font-size:11px;letter-spacing:1px;color:var(--brand)}
.scenario h3{font-size:14px;font-weight:650;margin-bottom:8px}.scenario p{font-size:12px;line-height:1.9;color:var(--muted)}
.features-section{padding:66px 0}.section-description{font-size:13px;color:var(--muted);line-height:1.9;margin:14px auto 0;max-width:580px}
.feature-grid{gap:20px}.feature-grid .feature{border:1px solid var(--line);border-radius:18px;padding:24px;background:#fff;transition:border-color .18s,box-shadow .18s}
.feature-grid .feature:hover{border-color:#c5dbbc;box-shadow:0 8px 26px #30552907}.feature-grid .feature-icon{margin-bottom:8px}.feature-grid .feature h3{margin-bottom:7px}.feature-grid .feature p{font-size:12px;line-height:1.9;min-height:46px}
.feature-button{font-size:16px;font-weight:650;width:100%;justify-content:space-between;gap:10px}.feature-button::after{flex-shrink:0}
.feature-highlights{list-style:none;display:flex;flex-wrap:wrap;gap:7px;margin-top:16px}.feature-highlights li{font-size:10px;line-height:1.6;padding:4px 8px;border-radius:6px;background:#f1f6ed;color:#527049}
.feature-note{text-align:center;font-size:10px;color:var(--muted);margin-top:22px;letter-spacing:.3px}
.feature-detail-lead{font-size:14px;color:var(--text);line-height:1.9}.detail-dialog .feature-highlights{margin-bottom:22px}
.download-section{padding-bottom:54px}.support-section{padding:46px 0 66px;background:#f9fbf7;border-top:1px solid #eef2eb}
.support-heading{display:flex;justify-content:space-between;align-items:center;gap:24px;margin-bottom:28px}.support-heading h2{font-size:25px}.support-contact{font-size:12px;color:var(--brand-dark);overflow-wrap:anywhere}
.support-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}.support-grid>button{display:flex;align-items:center;gap:18px;min-width:0;width:100%;border:1px solid var(--line);border-radius:14px;background:white;padding:22px;text-align:left;color:var(--text);cursor:pointer;font:inherit}.support-grid>button:hover{border-color:#bfd7b5}.support-number{font-size:12px;color:var(--brand);letter-spacing:1px}.support-grid strong{display:block;font-size:14px;font-weight:600}.support-grid small{display:block;font-size:11px;color:var(--muted);margin-top:4px;line-height:1.8}.support-grid>button>span:last-child{margin-left:auto;color:var(--brand);flex-shrink:0}
.footer{background:#fff}.footer-columns{display:grid;grid-template-columns:1.8fr 1fr 1fr;gap:38px;padding:46px 0 35px}.footer-columns.has-legal{grid-template-columns:1.8fr 1fr 1fr 1fr}.footer-brand{font-size:18px}.footer-brand img{width:34px;height:34px}.footer-intro>p{font-size:12px;color:var(--muted);margin-top:14px}.footer-intro>p:empty{display:none}.footer-email{display:block;margin-top:12px;font-size:12px;color:var(--brand-dark);overflow-wrap:anywhere}.footer-links{display:flex;flex-direction:column;align-items:flex-start;gap:9px}.footer-links h2{font-size:12px;letter-spacing:0;font-weight:650;margin-bottom:7px}.footer-links a,.footer-links button{font:inherit;font-size:11px;line-height:1.8;color:var(--muted);background:none;border:0;cursor:pointer;text-align:left;padding:3px 0;min-height:25px}.footer-links a:hover,.footer-links button:hover{color:var(--brand-dark)}.footer-bottom{display:flex;align-items:center;flex-wrap:wrap;gap:12px 24px;padding:22px 0;border-top:1px solid var(--line)}.footer-bottom .copyright{margin-left:0}.footer-bottom p{font-size:10px;color:var(--muted);overflow-wrap:anywhere}
@media(max-width:1000px){.nav nav{gap:22px}.about-heading{gap:32px}.feature-grid .feature{padding:20px}.feature-button{font-size:15px}.feature-highlights{gap:5px}.feature-highlights li{padding:4px 6px;font-size:9px}.footer-columns{gap:24px}}
@media(max-width:700px){html{scroll-padding-top:86px}.nav-inner{height:70px}.menu-toggle{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;width:42px;height:42px;background:#fff;border:1px solid var(--line);border-radius:10px;cursor:pointer}.menu-toggle span{display:block;width:17px;height:1.5px;background:var(--text);transition:transform .18s}.menu-toggle[aria-expanded="true"] span:first-child{transform:translateY(3.75px) rotate(45deg)}.menu-toggle[aria-expanded="true"] span:last-child{transform:translateY(-3.75px) rotate(-45deg)}.nav nav{display:none;position:absolute;top:69px;left:0;right:0;grid-template-columns:1fr 1fr;gap:8px 20px;padding:18px 24px 22px;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 15px 20px #14251608}.nav nav.is-open{display:grid}.nav nav>a{font-size:13px;min-height:44px;display:flex;align-items:center;padding:8px 0}.nav nav>a.nav-download{justify-content:space-between;border:0;border-radius:0;padding:8px 0}.hero-desc{max-width:320px}.platform-note{font-size:9px}.about-section{padding-top:44px}.about-heading{display:block}.about-heading h2{font-size:23px}.about-heading>p{margin-top:16px;font-size:12px;line-height:1.95}.scenario-grid{grid-template-columns:1fr;gap:20px;margin-top:25px;padding-bottom:36px}.scenario{padding-left:36px}.scenario h3{font-size:13px;margin-bottom:3px}.scenario p{font-size:11px}.features-section{padding:42px 0}.section-description{font-size:12px;max-width:310px}.feature-grid{grid-template-columns:minmax(0,1fr);gap:14px}.feature-grid .feature{padding:22px}.feature-grid .feature p{font-size:12px;min-height:0}.feature-button{font-size:16px}.feature-grid .feature-icon{margin-bottom:4px}.feature-highlights{gap:7px;margin-top:14px}.feature-highlights li{font-size:10px;padding:4px 8px}.feature-note{font-size:9px;line-height:1.9;max-width:260px;margin:18px auto 0}.support-section{padding:34px 0 38px}.support-heading{display:block;margin-bottom:22px}.support-heading h2{font-size:22px;line-height:1.6}.support-contact{display:inline-block;margin-top:14px;font-size:11px}.support-grid{grid-template-columns:minmax(0,1fr);gap:12px}.support-grid>button{padding:18px 16px;gap:13px}.support-grid small{font-size:10px}.download-section{padding-bottom:30px}.footer-columns,.footer-columns.has-legal{grid-template-columns:repeat(2,minmax(0,1fr));gap:26px 24px;padding:32px 0 28px}.footer-intro{grid-column:1/-1}.footer-brand{font-size:17px}.footer-intro>p{margin-top:10px;font-size:11px}.footer-links h2{font-size:12px}.footer-links a,.footer-links button{min-height:32px;font-size:11px}.footer-bottom{display:block;padding:18px 0}.footer-bottom p{font-size:9px;line-height:1.9}.footer-bottom p+p{margin-top:7px}}
@media(min-width:480px) and (max-width:700px){.feature-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.feature-grid .feature{padding:18px}.feature-button{font-size:14px}}

/* 独立协议页：静态正文与目录，无需脚本即可阅读。 */
.legal-nav{min-height:76px;display:flex;justify-content:space-between;align-items:center;gap:20px}.legal-back{font-size:12px;color:var(--muted)}.legal-back span{margin-left:10px;color:var(--brand)}
.legal-main{padding-top:48px;padding-bottom:70px}.legal-title h1{font-size:36px;letter-spacing:-1px}.legal-subtitle{font-size:15px;color:#647168;margin-top:12px}.legal-date{font-size:11px;color:var(--muted);margin-top:12px}.legal-scope{font-size:12px;line-height:1.95;background:#f1f6ed;border:1px solid #e5eddf;border-radius:12px;padding:18px 22px;margin:28px 0 38px;color:#506449}
.legal-layout{display:grid;grid-template-columns:200px minmax(0,1fr);gap:55px;align-items:start}.legal-toc{position:sticky;top:105px;display:flex;flex-direction:column;gap:3px;padding-right:20px;border-right:1px solid var(--line)}.legal-toc>p{font-size:12px;font-weight:650;margin-bottom:12px}.legal-toc a{font-size:11px;line-height:1.8;color:var(--muted);padding:6px 0}.legal-toc a:hover{color:var(--brand-dark)}.legal-content{max-width:760px}.legal-intro{font-size:14px;line-height:2;color:#526158;margin-bottom:32px}.legal-content section{margin-bottom:32px;scroll-margin-top:100px}.legal-content h2{font-size:18px;line-height:1.7;margin-bottom:14px;font-weight:650;letter-spacing:0}.legal-content p{font-size:13px;line-height:2;color:#647168;margin-bottom:12px}.legal-content a{color:var(--brand-dark);overflow-wrap:anywhere;text-decoration:underline;text-underline-offset:4px}.legal-references{padding-top:22px;border-top:1px solid var(--line)}.legal-references h2{font-size:13px}.legal-references a{display:block;font-size:11px;margin-bottom:8px}.legal-footer{display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap;padding-top:25px;padding-bottom:25px}.legal-footer p,.legal-footer a{font-size:11px;color:var(--muted)}.legal-footer nav{display:flex;gap:24px}.legal-footer [aria-current="page"]{color:var(--brand-dark)}
@media(max-width:700px){.legal-nav{min-height:70px}.legal-back{font-size:11px}.legal-main{padding-top:34px;padding-bottom:42px}.legal-title h1{font-size:29px}.legal-subtitle{font-size:13px}.legal-date{font-size:10px}.legal-scope{padding:15px;font-size:11px;margin:23px 0 27px}.legal-layout{display:block}.legal-toc{position:static;border-right:0;border-bottom:1px solid var(--line);padding:0 0 21px;margin-bottom:27px;display:grid;grid-template-columns:1fr 1fr;gap:2px 12px}.legal-toc>p{grid-column:1/-1;margin-bottom:8px}.legal-toc a{font-size:10px;line-height:1.7}.legal-content h2{font-size:16px}.legal-content p{font-size:12px}.legal-content section{margin-bottom:26px}.legal-footer{gap:14px;padding-top:21px;padding-bottom:21px}.legal-footer p,.legal-footer a{font-size:10px}.legal-footer nav{gap:20px}.footer-intro #footerEmailStatus{font-size:10px}}
@media(max-width:700px){.no-js .menu-toggle{display:none}.no-js .nav-inner{height:auto;min-height:70px;flex-wrap:wrap;padding-top:14px;padding-bottom:12px;gap:10px}.no-js .nav nav{display:grid;position:static;flex-basis:100%;padding:0;box-shadow:none;border:0}.no-js .nav nav>a{font-size:11px;min-height:32px}}
.error-page{min-height:100vh;display:grid;place-items:center;background:#f9fbf7}.error-page main{max-width:560px;padding:40px 28px}.error-page .error-code{font-size:80px;line-height:1.2;color:var(--brand);font-weight:700;margin-top:45px}.error-page h1{font-size:28px;margin-top:16px;letter-spacing:-.5px}.error-page main>p:last-of-type{font-size:13px;color:var(--muted);line-height:1.9;margin-top:15px}.error-actions{display:flex;align-items:center;gap:25px;margin-top:28px}

/* 插图小字适度放大，并留出聊天内容与输入栏的间距。 */
.hero-visual .phone{transform:rotate(3deg)}
.phone-status{font-size:11px}
.chat-header>div{font-size:14px}
.chat-header small{font-size:10px}
.chat-time{font-size:10px;color:#738071}
.message{margin-bottom:12px}
.avatar{font-size:12px}
.bubble{font-size:12px;line-height:1.65;padding:8px 10px}
.voice{height:36px}
.voice small{font-size:10px;color:#63715f}
.wave{font-size:11px}
.shared-moment{width:175px}
.shared-moment p{font-size:11px;padding:7px 8px;color:#56664f}
.landscape{height:58px}
.input-placeholder{font-size:11px;color:#75816e}
.floating-message{font-size:13px}
.floating-message small{font-size:11px;color:#64705e;letter-spacing:.5px}
.preview-caption{font-size:10px;color:#72806b}
@media(max-width:700px){
  .hero-visual{min-height:490px}
  .hero-visual .phone{transform:rotate(1deg) scale(.94);top:-12px}
  .floating-message{font-size:12px;bottom:58px}
  .floating-message small{font-size:11px}
}
.wave{display:inline-flex;align-items:center;gap:3px;height:17px;flex-shrink:0}
.wave i{display:block;width:3px;height:8px;background:currentColor;border-radius:2px}
.wave i:nth-child(2){height:13px}.wave i:nth-child(3){height:10px}.wave i:nth-child(4){height:17px}.wave i:nth-child(5){height:12px}.wave i:nth-child(6){height:6px}.wave i:nth-child(7){height:14px}
.voice small{white-space:nowrap;flex-shrink:0}
.floating-message{left:-36px;transform:translateX(-20%)}
@media(max-width:700px){
  .hero-visual{min-height:530px}
  .floating-message{left:50%;bottom:0;transform:translateX(-50%);padding:8px 12px}
  .preview-caption{bottom:-24px}
}
.floating-message{width:max-content;max-width:calc(100vw - 40px);white-space:nowrap}
@media(max-width:700px){.floating-message{bottom:-8px}.preview-caption{bottom:-34px}}