:root {
  color-scheme: dark;
  --bg: #091b2a;
  --surface: #0e2536;
  --surface-raised: #142d3e;
  --accent: #64ebc1;
  --text: #f1f5f7;
  --muted: #9fb1bc;
  --line: rgba(169, 200, 212, .15);
} * { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 98px; } body { margin: 0; color: var(--text); background: var(--bg); font-family: "Segoe UI", "Microsoft YaHei", "PingFang SC", sans-serif; font-size: 15px; line-height: 1.75; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; } button, input, select, textarea { font: inherit; }
button, select { cursor: pointer; } button { color: inherit; }
button, a, summary { -webkit-tap-highlight-color: transparent; } img { display: block; max-width: 100%; }
h1, h2, h3, h4, p, figure { margin: 0; } h1, h2, h3, h4 { line-height: 1.35; font-weight: 650; }
h2 { font-size: 36px; letter-spacing: -.9px; } h3 { font-size: 23px; letter-spacing: -.4px; }
p { color: var(--muted); } :focus-visible { outline: 2px solid var(--accent); outline-offset: 5px; }
[hidden], .hidden { display: none !important; } .container { width: min(1184px, calc(100% - 96px)); margin-inline: auto; }
.icon { width: 22px; height: 22px; flex: 0 0 auto; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; } .icon-defs { position: absolute; width: 0; height: 0; overflow: hidden; }
.skip-link { position: fixed; top: -100px; left: 20px; z-index: 100; padding: 10px 18px; background: var(--accent); color: var(--bg); border-radius: 8px; } .skip-link:focus { top: 12px; }
.site-header { position: sticky; top: 0; z-index: 30; border-bottom: 1px solid var(--line); background: rgba(9, 27, 42, .94); backdrop-filter: blur(18px); } .header-inner { height: 84px; display: flex; align-items: center; gap: 32px; }
.brand { display: inline-flex; align-items: center; gap: 11px; font-size: 19px; font-weight: 650; letter-spacing: .2px; white-space: nowrap; } .brand-mark { width: 38px; height: 38px; display: grid; place-items: center; border-radius: 11px; color: var(--accent); background: rgba(100, 235, 193, .1); border: 1px solid rgba(100, 235, 193, .25); }
.brand-mark .icon { width: 21px; height: 21px; } .main-nav { display: flex; align-items: center; gap: 30px; margin-left: auto; }
.main-nav a { color: var(--muted); font-size: 13px; transition: color .2s; } .main-nav a:hover { color: var(--accent); }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 14px; min-height: 49px; padding: 12px 22px; border-radius: 9px; border: 1px solid var(--line); background: transparent; font-size: 14px; font-weight: 600; line-height: 1.45; transition: background .2s, border-color .2s, transform .2s; } .button:hover { border-color: var(--accent); transform: translateY(-2px); }
.button-primary { background: var(--accent); border-color: var(--accent); color: #09291f; } .button-primary:hover { background: #80f4d1; }
.button-small { min-height: 39px; padding: 9px 15px; font-size: 12px; gap: 8px; } .button-small .icon { width: 17px; height: 17px; }
.header-cta { color: var(--accent); border-color: rgba(100, 235, 193, .35); } .button-ghost { color: var(--text); background: rgba(255, 255, 255, .025); }
.nav-toggle { display: none; } .hero { overflow: hidden; padding: 78px 0 0; background: radial-gradient(ellipse at 80% 30%, rgba(35, 100, 100, .15), transparent 48%); }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(0, 1fr); align-items: center; gap: 48px; } .eyebrow { display: flex; align-items: center; gap: 9px; margin-bottom: 24px; color: var(--accent); font-size: 11px; letter-spacing: 2px; font-weight: 600; line-height: 1.5; }
.status-dot, .mini-pulse { display: inline-block; width: 6px; height: 6px; flex: 0 0 auto; border-radius: 50%; background: var(--accent); box-shadow: 0 0 12px rgba(100, 235, 193, .5); } .hero h1 { margin-bottom: 24px; font-size: clamp(48px, 5.1vw, 70px); line-height: 1.24; letter-spacing: -2.5px; }
.hero h1 span, .accent { color: var(--accent); } .hero-description { font-size: 16px; line-height: 1.9; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 31px; } .hero-support { display: flex; align-items: center; flex-wrap: wrap; gap: 10px; margin-top: 24px; color: var(--muted); font-size: 11px; }
.hero-support .icon { width: 15px; height: 15px; color: var(--accent); } .support-divider { height: 12px; width: 1px; margin-inline: 5px; background: var(--line); }
.hero-art { position: relative; height: 420px; overflow: hidden; border: 1px solid var(--line); border-radius: 25px; background: linear-gradient(145deg, rgba(21, 51, 67, .7), rgba(8, 25, 40, .5)); } .art-grid { position: absolute; inset: 0; opacity: .3; background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px); background-size: 29px 29px; mask-image: radial-gradient(ellipse at center, black, transparent 80%); }
.orbit { position: absolute; width: 278px; height: 278px; left: 50%; top: 47px; transform: translateX(-50%); border: 1px dashed rgba(100, 235, 193, .25); border-radius: 50%; } .orbit-two { width: 198px; height: 198px; top: 87px; border-style: solid; border-color: rgba(100, 235, 193, .1); }
.orbit-label { position: absolute; top: 22px; left: 25px; color: #71919c; font-size: 9px; letter-spacing: 2.4px; } .channel-node { position: absolute; display: flex; align-items: center; gap: 10px; padding: 12px 14px; border: 1px solid rgba(158, 196, 208, .23); border-radius: 12px; background: #132e40; box-shadow: 0 8px 24px rgba(0, 0, 0, .2); }
.channel-node strong { display: block; font-size: 12px; font-weight: 600; } .channel-node small { display: block; color: var(--muted); font-size: 9px; margin-top: 2px; }
.channel-icon { display: grid; place-items: center; width: 31px; height: 31px; border-radius: 9px; font-size: 11px; font-weight: 700; } .channel-icon .icon { width: 18px; height: 18px; }
.tg-icon { color: #62c7ff; background: rgba(64, 178, 240, .12); } .qq-icon { color: #adb5fa; background: rgba(136, 141, 255, .12); }
.wechat-icon { color: var(--accent); background: rgba(100, 235, 193, .1); } .node-tg { left: 24px; top: 63px; }
.node-qq { right: 21px; top: 155px; } .node-wechat { left: 36px; top: 245px; }
.signal-core { position: absolute; top: 139px; left: 48%; width: 86px; height: 86px; transform: translateX(-50%); display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 6px; color: var(--accent); border: 1px solid rgba(100, 235, 193, .6); border-radius: 50%; background: #13382f; box-shadow: 0 0 40px rgba(100, 235, 193, .09), 0 0 0 10px rgba(100, 235, 193, .025); } .signal-core .icon { width: 26px; height: 26px; }
.signal-core span { font-size: 9px; } .art-response { position: absolute; bottom: 38px; left: 22px; right: 22px; padding: 12px 15px; border: 1px solid var(--line); background: #102738; border-radius: 10px; }
.response-heading, .demo-heading { display: flex; align-items: center; gap: 8px; font-size: 10px; color: var(--text); } .demo-tag { margin-left: auto; color: var(--muted); font-size: 9px; font-weight: 400; padding: 1px 7px; border: 1px solid var(--line); border-radius: 4px; }
.response-line { display: flex; justify-content: space-between; gap: 7px; margin-top: 8px; font-size: 9px; color: var(--muted); } .response-line span:nth-child(even) { color: var(--accent); }
.art-caption { position: absolute; bottom: 13px; left: 25px; right: 25px; display: flex; justify-content: space-between; color: #698692; font-size: 8px; letter-spacing: 1.2px; } .stats-bar { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); margin-top: 64px; padding-block: 29px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.stat { padding-left: 28px; border-left: 1px solid var(--line); } .stat:first-child { padding-left: 0; border-left: 0; }
.stat strong { font-size: 35px; line-height: 1.2; font-weight: 600; letter-spacing: -.6px; } .stat strong span { margin-left: 3px; font-size: 19px; color: var(--accent); }
.stat p { margin-top: 8px; font-size: 11px; } .stat-text strong { font-size: 29px; }
.stat-text strong span { font-size: 17px; margin-left: 10px; } .section { padding: 104px 0; }
.section-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 36px; margin-bottom: 39px; } .section-heading .eyebrow { margin-bottom: 15px; }
.section-intro { font-size: 13px; line-height: 1.9; } .core-services { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px; }
.core-card { padding: 31px 34px; border: 1px solid var(--line); border-radius: 17px; background: linear-gradient(125deg, #142e40, #0f2636); } .listener-card { background: linear-gradient(125deg, #142f36, #102937); }
.card-topline { display: flex; align-items: center; justify-content: space-between; margin-bottom: 27px; } .service-icon { display: grid; place-items: center; width: 47px; height: 47px; color: var(--accent); background: rgba(100, 235, 193, .09); border: 1px solid rgba(100, 235, 193, .18); border-radius: 12px; }
.card-number { color: #527183; font-size: 12px; } .core-card h3 { margin-bottom: 13px; }
.core-card > p { font-size: 13px; line-height: 1.9; max-width: 470px; } .service-tags { display: flex; gap: 8px; flex-wrap: wrap; margin: 21px 0 26px; }
.service-tags span { padding: 3px 9px; color: #b4c6ce; background: rgba(159, 177, 188, .06); border: 1px solid var(--line); border-radius: 5px; font-size: 10px; } .text-link { display: inline-flex; align-items: center; gap: 12px; color: var(--accent); font-size: 12px; }
.text-link .icon { width: 17px; height: 17px; } .additional-heading { display: flex; align-items: center; justify-content: space-between; margin: 39px 0 17px; }
.additional-heading h3 { font-size: 17px; } .additional-heading > span { color: var(--muted); font-size: 11px; }
.additional-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 13px; } .additional-service { position: relative; padding: 23px 22px; border: 1px solid var(--line); border-radius: 12px; background: rgba(20, 45, 62, .38); transition: border-color .2s, background .2s; }
.additional-service:hover { border-color: rgba(100, 235, 193, .55); background: #15363e; } .additional-service > .icon { width: 23px; height: 23px; color: var(--accent); margin-bottom: 16px; }
.additional-service h4 { font-size: 15px; margin-bottom: 6px; } .additional-service p { font-size: 10px; }
.additional-service > span { position: absolute; top: 23px; right: 20px; font-size: 9px; color: #567585; } .showcase-section { background: #0c2030; border-block: 1px solid var(--line); }
.gallery-toolbar { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-bottom: 26px; } .gallery-filters { display: flex; gap: 8px; flex-wrap: wrap; }
.gallery-filter { padding: 7px 17px; border: 1px solid var(--line); border-radius: 6px; background: transparent; color: var(--muted); font-size: 12px; } .gallery-filter:hover { color: var(--text); border-color: rgba(100, 235, 193, .4); }
.gallery-filter.is-active { color: #09291f; background: var(--accent); border-color: var(--accent); } .gallery-count { color: var(--muted); font-size: 11px; white-space: nowrap; }
.gallery-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; } .gallery-card { display: block; min-width: 0; width: 100%; padding: 0; border: 1px solid var(--line); border-radius: 12px; overflow: hidden; background: var(--surface); transition: border-color .2s, transform .2s; }
.gallery-card:hover { transform: translateY(-4px); border-color: rgba(100, 235, 193, .6); } .gallery-figure { display: flex; flex-direction: column; margin: 0; }
.gallery-thumb { flex: 0 0 auto; height: 320px; width: 100%; object-fit: cover; object-position: top; background: #182d3b; } .gallery-caption { display: grid; grid-template-columns: auto minmax(0, 1fr); align-items: center; column-gap: 9px; row-gap: 3px; padding: 13px 16px; text-align: left; flex: 0 0 auto; }
.gallery-label { padding: 2px 5px; border-radius: 4px; color: var(--accent); background: rgba(100, 235, 193, .09); font-size: 9px; } .gallery-title { font-size: 12px; font-weight: 550; line-height: 1.5; }
.gallery-open { grid-column: 2; color: var(--muted); font-size: 9px; } .gallery-note { margin-top: 19px; font-size: 10px; }
.gallery-empty { grid-column: 1 / -1; padding: 35px; border: 1px solid var(--line); border-radius: 12px; } .noscript-gallery { display: flex; gap: 14px; flex-wrap: wrap; color: var(--accent); }
.operation-layout, .keyword-layout, .faq-layout, .contact-layout { display: grid; grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr); gap: 86px; } .operation-intro > p:not(.eyebrow) { margin-top: 23px; font-size: 13px; max-width: 330px; }
.operation-badge { display: inline-flex; align-items: center; gap: 15px; margin-top: 30px; padding: 17px 23px; border: 1px solid rgba(100, 235, 193, .22); border-radius: 12px; background: rgba(100, 235, 193, .035); } .operation-badge > .icon { width: 30px; height: 30px; color: var(--accent); }
.operation-badge strong { display: block; font-size: 24px; font-weight: 550; line-height: 1.2; } .operation-badge span { display: block; color: var(--muted); font-size: 10px; margin-top: 4px; }
.operation-list article { display: flex; gap: 22px; align-items: flex-start; padding: 26px 0; border-bottom: 1px solid var(--line); } .operation-list article:first-child { padding-top: 4px; }
.operation-number { color: var(--accent); font-size: 10px; padding-top: 4px; flex: 0 0 auto; } .operation-list h3 { font-size: 17px; margin-bottom: 10px; }
.operation-list p { font-size: 12px; line-height: 1.9; } .operation-list article > .icon { margin-top: 3px; color: #698e9c; width: 21px; height: 21px; }
.keyword-section { background: linear-gradient(130deg, #0d2531, #0b2130); border-block: 1px solid var(--line); } .keyword-layout { align-items: center; }
.keyword-copy > p:not(.eyebrow) { font-size: 13px; margin-top: 22px; max-width: 350px; } .check-list { padding: 0; margin: 25px 0 0; list-style: none; }
.check-list li { display: flex; gap: 10px; align-items: center; font-size: 12px; margin-bottom: 10px; color: #c6d7dc; } .check-list .icon { width: 16px; height: 16px; color: var(--accent); }
.keyword-copy .keyword-note { color: #718e9a; font-size: 10px !important; margin-top: 21px !important; } .keyword-demo { padding: 25px; background: #0b1f2c; border: 1px solid rgba(100, 235, 193, .19); border-radius: 17px; box-shadow: 0 15px 45px rgba(0, 0, 0, .1); }
.demo-heading { font-size: 12px; padding-bottom: 21px; border-bottom: 1px solid var(--line); } .demo-message { display: flex; align-items: center; gap: 12px; margin: 22px 0; }
.demo-avatar { display: grid; place-items: center; width: 34px; height: 34px; flex: 0 0 auto; color: #9db5c8; background: #1a3447; border-radius: 10px; font-size: 12px; } .demo-message small { color: #6c8a9b; font-size: 9px; }
.demo-message p { font-size: 12px; color: #cad5dc; margin-top: 3px; } .keyword-match { display: flex; align-items: center; flex-wrap: wrap; gap: 10px; padding: 11px 12px; border: 1px dashed rgba(100, 235, 193, .24); border-radius: 7px; font-size: 9px; color: var(--muted); }
.keyword-match strong { padding: 3px 8px; border-radius: 4px; background: rgba(100, 235, 193, .12); color: var(--accent); font-size: 10px; } .match-line { height: 1px; flex: 1; background: rgba(100, 235, 193, .2); }
.keyword-match .icon { width: 13px; height: 13px; color: var(--accent); } .demo-reply { margin: 19px 0 15px 24px; padding: 18px; border: 1px solid rgba(100, 235, 193, .15); background: #113332; border-radius: 10px; }
.reply-title { display: flex; gap: 7px; align-items: center; color: var(--accent); font-size: 9px; } .reply-title .icon { width: 15px; height: 15px; }
.demo-reply p { margin-top: 12px; color: #aec9c4; font-size: 11px; line-height: 1.85; } .demo-button { display: flex; justify-content: center; align-items: center; gap: 12px; margin-top: 15px; padding: 8px; border: 1px solid rgba(100, 235, 193, .18); border-radius: 5px; color: var(--accent); font-size: 10px; }
.demo-button .icon { width: 14px; height: 14px; } .demo-footer { display: flex; align-items: center; justify-content: center; gap: 7px; font-size: 9px; color: #769797; }
.demo-footer .icon { width: 13px; height: 13px; } .process-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 34px; padding: 0; margin: 0; list-style: none; }
.process-grid li { border-top: 1px solid rgba(100, 235, 193, .28); padding-top: 20px; } .process-grid li > span { display: block; color: var(--accent); font-size: 12px; margin-bottom: 25px; }
.process-grid h3 { font-size: 17px; margin-bottom: 10px; } .process-grid p { font-size: 11px; }
.faq-section { padding-top: 30px; } .faq-layout .section-intro { margin-top: 22px; }
.faq-list { border-top: 1px solid var(--line); } .faq-list details { border-bottom: 1px solid var(--line); }
.faq-list summary { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 20px 0; font-size: 13px; list-style: none; cursor: pointer; } .faq-list summary::-webkit-details-marker { display: none; }
.faq-list details > p { padding: 0 34px 21px 0; font-size: 12px; line-height: 1.9; } .faq-plus { position: relative; width: 16px; height: 16px; flex: 0 0 auto; }
.faq-plus::before, .faq-plus::after { content: ""; position: absolute; left: 2px; top: 7px; width: 12px; height: 1px; background: var(--accent); } .faq-plus::after { transform: rotate(90deg); }
.faq-list details[open] .faq-plus::after { transform: rotate(0); } .contact-section { background: #0e2734; border-block: 1px solid var(--line); }
.contact-layout { align-items: center; } .contact-copy > p:not(.eyebrow) { margin: 24px 0; font-size: 13px; }
.contact-copy > .button { margin-top: 8px; } .contact-handle { display: block; margin: 12px 0 0 2px; color: #7da599; font-size: 11px; }
.contact-copy .contact-tip { margin-top: 26px !important; font-size: 11px !important; color: #7d9ba7; } .inquiry-form { padding: 30px; border: 1px solid var(--line); border-radius: 16px; background: #0d2130; }
.inquiry-form h3 { margin-bottom: 24px; font-size: 18px; } .form-row { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.inquiry-form label { display: block; color: #b3c5ce; font-size: 11px; margin-bottom: 17px; } .inquiry-form select, .inquiry-form textarea { display: block; width: 100%; margin-top: 8px; padding: 11px 12px; color: #dce6ea; border: 1px solid rgba(143, 180, 197, .2); border-radius: 7px; background: #112b3b; font-size: 12px; line-height: 1.6; }
.inquiry-form select { min-height: 42px; } .inquiry-form textarea { resize: vertical; min-height: 100px; }
.inquiry-form textarea::placeholder { color: #6f8e9e; } .inquiry-form select:focus, .inquiry-form textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 2px rgba(100, 235, 193, .08); }
.button-form { width: 100%; color: var(--accent); border-color: rgba(100, 235, 193, .3); background: rgba(100, 235, 193, .05); min-height: 44px; font-size: 12px; } .form-note { margin-top: 11px; text-align: center; font-size: 9px; color: #6f8e9e; }
#inquiry-output { margin-top: 23px; padding-top: 23px; border-top: 1px solid var(--line); } .copy-row { display: flex; align-items: center; flex-wrap: wrap; gap: 12px; }
#copy-status { color: var(--muted); font-size: 10px; flex: 1; min-width: 150px; } .site-footer { padding: 42px 0 26px; }
.footer-top { display: flex; align-items: center; gap: 24px; padding-bottom: 28px; } .footer-top p { font-size: 11px; }
.back-top { margin-left: auto; color: var(--muted); font-size: 11px; } .footer-bottom { display: flex; justify-content: space-between; gap: 20px; padding-top: 23px; border-top: 1px solid var(--line); color: #627f8d; font-size: 9px; }
.mobile-contact { display: none; } .lightbox { width: min(1040px, calc(100% - 40px)); max-height: calc(100dvh - 36px); margin: auto; padding: 18px 20px 12px; color: var(--text); background: #0b2130; border: 1px solid #355060; border-radius: 14px; overflow: auto; box-shadow: 0 25px 80px rgba(0, 0, 0, .45); }
.lightbox::backdrop { background: rgba(1, 9, 16, .88); backdrop-filter: blur(5px); } .lightbox-open { overflow: hidden; }
.lightbox-header { display: flex; justify-content: space-between; align-items: center; gap: 20px; padding-bottom: 13px; } .lightbox-header p { color: var(--text); font-size: 14px; }
.lightbox-header span { color: var(--muted); font-size: 10px; } .lightbox-control { display: grid; place-items: center; width: 35px; height: 35px; padding: 0; border: 1px solid var(--line); border-radius: 7px; background: #193748; color: var(--text); font-size: 18px; }
.lightbox-control:hover { color: var(--accent); border-color: var(--accent); } .lightbox-control:disabled { opacity: .35; cursor: default; }
.lightbox-stage { position: relative; display: grid; place-items: center; height: 72dvh; padding: 0 48px; background: #061621; border-radius: 8px; } #lightbox-image { width: 100%; height: 100%; object-fit: contain; min-height: 0; }
.lightbox-prev, .lightbox-next { position: absolute; top: 50%; transform: translateY(-50%); font-size: 28px; } .lightbox-prev { left: 7px; }
.lightbox-next { right: 7px; } .lightbox-help { margin-top: 9px; text-align: center; font-size: 9px; }
.reveal { opacity: 1; transform: none; }
@media (max-width: 1050px) {
  .header-inner { gap: 20px; } .main-nav { gap: 20px; }
  .hero-grid { gap: 28px; } .hero h1 { font-size: 54px; }
  .hero-art { height: 405px; } .operation-layout, .keyword-layout, .faq-layout, .contact-layout { gap: 48px; }
  .additional-service { padding: 20px 16px; } .process-grid { gap: 22px; }
}
@media (max-width: 900px) {
  .container { width: calc(100% - 64px); } .hero { padding-top: 56px; }
  .hero-grid { grid-template-columns: minmax(0, 1fr); gap: 40px; } .hero-copy { max-width: 620px; }
  .hero h1 { font-size: 62px; } .hero-art { width: 100%; max-width: 620px; height: 410px; }
  .node-tg { left: 13%; } .node-qq { right: 12%; }
  .node-wechat { left: 16%; } .main-nav { gap: 17px; }
  .main-nav a { font-size: 11px; } .header-cta { padding: 8px 11px; }
  .brand { font-size: 16px; gap: 8px; } .brand-mark { width: 32px; height: 32px; }
  .stats-bar { margin-top: 40px; } .section { padding: 76px 0; }
  .additional-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); } .gallery-grid { gap: 14px; }
  .gallery-thumb { height: 280px; } .gallery-caption { padding: 11px; }
  .gallery-title { font-size: 10px; } .operation-layout, .keyword-layout, .faq-layout, .contact-layout { gap: 32px; grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .core-card { padding: 26px; } .keyword-demo { padding: 20px; }
  .inquiry-form { padding: 22px; } .form-row { grid-template-columns: minmax(0, 1fr); gap: 0; }
  h2 { font-size: 32px; }
}
@media (max-width: 650px) {
  html { scroll-padding-top: 82px; } body { font-size: 14px; }
  .container { width: calc(100% - 40px); } .header-inner { height: 68px; }
  .brand { font-size: 17px; } .header-cta { display: none; }
  .nav-toggle { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 6px; width: 36px; height: 36px; margin-left: auto; padding: 7px; border: 1px solid var(--line); border-radius: 7px; background: transparent; } .nav-toggle span { display: block; width: 17px; height: 1px; background: var(--text); transition: transform .2s; }
  .nav-toggle.is-open span:first-child { transform: translateY(3.5px) rotate(45deg); } .nav-toggle.is-open span:last-child { transform: translateY(-3.5px) rotate(-45deg); }
  .main-nav { display: none; position: absolute; top: 68px; left: 20px; right: 20px; margin: 0; padding: 12px; border: 1px solid var(--line); border-radius: 0 0 12px 12px; background: #102a3b; box-shadow: 0 18px 25px rgba(0, 0, 0, .2); } .main-nav.is-open { display: flex; flex-direction: column; align-items: stretch; gap: 0; }
  .main-nav a { padding: 12px; font-size: 13px; } .hero { padding-top: 46px; }
  .hero-grid { gap: 34px; } .eyebrow { font-size: 9px; letter-spacing: 1.3px; margin-bottom: 18px; }
  .hero h1 { font-size: clamp(39px, 10.4vw, 57px); letter-spacing: -1.3px; margin-bottom: 19px; } .hero-description { font-size: 13px; }
  .hero-actions { gap: 9px; margin-top: 24px; } .hero-actions .button { padding: 12px 16px; min-height: 45px; font-size: 12px; gap: 9px; }
  .hero-support { font-size: 9px; gap: 7px; margin-top: 19px; } .hero-art { height: 355px; border-radius: 17px; }
  .orbit { width: 242px; height: 242px; top: 40px; } .orbit-two { width: 174px; height: 174px; top: 74px; }
  .channel-node { padding: 9px 10px; gap: 7px; border-radius: 9px; } .channel-node strong { font-size: 10px; }
  .channel-node small { font-size: 8px; } .channel-icon { width: 26px; height: 26px; }
  .node-tg { left: 13px; top: 53px; } .node-qq { right: 12px; top: 131px; }
  .node-wechat { left: 20px; top: 210px; } .signal-core { width: 68px; height: 68px; top: 122px; left: 43%; }
  .signal-core .icon { width: 22px; height: 22px; } .signal-core span { font-size: 8px; }
  .art-response { left: 13px; right: 13px; bottom: 35px; padding: 9px 12px; } .response-heading { font-size: 9px; }
  .response-line { font-size: 8px; gap: 4px; } .art-caption { left: 16px; right: 16px; letter-spacing: .3px; font-size: 7px; }
  .orbit-label { top: 17px; left: 16px; font-size: 8px; letter-spacing: 1.5px; } .stats-bar { grid-template-columns: repeat(2, minmax(0, 1fr)); padding-block: 0; margin-top: 35px; }
  .stat { padding: 23px 0 23px 20px; } .stat:first-child, .stat:nth-child(3) { padding-left: 0; border-left: 0; }
  .stat:nth-child(n+3) { border-top: 1px solid var(--line); } .stat strong { font-size: 30px; }
  .stat strong span { font-size: 17px; } .stat p { font-size: 9px; margin-top: 7px; }
  .stat-text strong { font-size: 26px; } .stat-text strong span { font-size: 14px; margin-left: 8px; }
  .section { padding: 62px 0; } h2 { font-size: 29px; letter-spacing: -.6px; }
  .section-heading { display: block; margin-bottom: 28px; } .section-heading .section-intro { margin-top: 18px; }
  .section-intro { font-size: 12px; } .core-services { grid-template-columns: minmax(0, 1fr); gap: 15px; }
  .core-card { padding: 25px; border-radius: 13px; } .card-topline { margin-bottom: 21px; }
  .core-card h3 { font-size: 21px; } .core-card > p { font-size: 12px; }
  .additional-heading { margin-top: 29px; } .additional-heading h3 { font-size: 16px; }
  .additional-heading > span { font-size: 9px; } .additional-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 11px; }
  .additional-service { padding: 20px 16px; border-radius: 10px; } .additional-service h4 { font-size: 13px; }
  .additional-service p { font-size: 9px; } .additional-service > span { top: 21px; right: 14px; }
  .gallery-toolbar { align-items: flex-start; gap: 10px; margin-bottom: 19px; } .gallery-filters { gap: 5px; }
  .gallery-filter { padding: 7px 10px; font-size: 10px; } .gallery-count { padding-top: 7px; font-size: 9px; }
  .gallery-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; } .gallery-thumb { height: 220px; }
  .gallery-caption { padding: 10px; gap: 3px 6px; } .gallery-title { font-size: 10px; }
  .gallery-label { font-size: 8px; padding: 2px 4px; } .gallery-open { font-size: 8px; }
  .gallery-note { font-size: 9px; margin-top: 15px; } .operation-layout, .keyword-layout, .faq-layout, .contact-layout { grid-template-columns: minmax(0, 1fr); gap: 33px; }
  .operation-intro > p:not(.eyebrow) { margin-top: 17px; font-size: 12px; } .operation-badge { margin-top: 22px; padding: 13px 18px; }
  .operation-badge strong { font-size: 23px; } .operation-list article { gap: 14px; padding: 22px 0; }
  .operation-list h3 { font-size: 16px; } .operation-list p { font-size: 11px; }
  .keyword-copy > p:not(.eyebrow) { font-size: 12px; } .keyword-demo { padding: 21px; border-radius: 13px; }
  .demo-reply { margin-left: 12px; padding: 15px; } .process-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px 22px; }
  .process-grid li > span { margin-bottom: 19px; } .process-grid h3 { font-size: 16px; }
  .process-grid p { font-size: 10px; } .faq-section { padding-top: 20px; }
  .faq-layout { gap: 24px; } .faq-layout .section-intro { margin-top: 16px; }
  .faq-list summary { font-size: 12px; padding-block: 17px; } .faq-list details > p { font-size: 11px; }
  .contact-copy > p:not(.eyebrow) { font-size: 12px; margin-block: 18px; } .contact-layout { gap: 30px; }
  .inquiry-form { padding: 24px 20px; } .form-row { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
  .inquiry-form select { font-size: 11px; padding-inline: 8px; } .site-footer { padding: 31px 0 104px; }
  .footer-top { align-items: flex-start; flex-wrap: wrap; gap: 15px; padding-bottom: 21px; } .footer-top .brand { flex-basis: 100%; }
  .footer-top p { font-size: 9px; } .back-top { font-size: 9px; }
  .footer-bottom { flex-direction: column; gap: 7px; padding-top: 18px; font-size: 8px; } .mobile-contact { position: fixed; left: 20px; right: 20px; bottom: max(14px, env(safe-area-inset-bottom)); z-index: 25; display: flex; align-items: center; justify-content: center; gap: 13px; padding: 13px; min-height: 48px; color: #09291f; background: var(--accent); border: 1px solid #85f5d3; border-radius: 10px; box-shadow: 0 8px 25px rgba(0, 0, 0, .25); font-size: 13px; font-weight: 650; }
  .mobile-contact .icon { width: 19px; height: 19px; } .lightbox { width: calc(100% - 20px); padding: 13px 10px 10px; border-radius: 11px; }
  .lightbox-stage { height: 70dvh; padding-inline: 36px; } .lightbox-control { width: 29px; height: 34px; }
  .lightbox-prev { left: 3px; } .lightbox-next { right: 3px; }
  .lightbox-header p { font-size: 12px; }
}
@media (max-width: 370px) {
  .hero-actions { gap: 8px; } .hero-actions .button { padding-inline: 13px; font-size: 11px; }
  .hero-actions .icon { width: 18px; height: 18px; } .hero h1 { font-size: 39px; }
  .hero-support { font-size: 8px; } .gallery-toolbar { flex-wrap: wrap; }
  .gallery-count { padding-top: 0; } .form-row { grid-template-columns: minmax(0, 1fr); gap: 0; }
  .signal-core { left: 40%; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; } *, *::before, *::after { animation: none !important; transition: none !important; }
}
/* 白色主题：保持原有结构与层级，使用深墨绿文字和青绿色操作提示。 */
:root {
  color-scheme: light;
  --bg: #ffffff;
  --surface: #ffffff;
  --surface-raised: #ffffff;
  --accent: #0d8b68;
  --text: #142b33;
  --muted: #5f7479;
  --line: #dbe7e4;
}
body { background: #ffffff; color: var(--text); }
.site-header { background: rgba(255, 255, 255, .94); box-shadow: 0 2px 14px rgba(24, 58, 55, .05); }
.brand-mark { color: #ffffff; background: var(--accent); border-color: var(--accent); }
.main-nav a { color: #52686d; }
.button-primary { color: #ffffff; background: var(--accent); border-color: var(--accent); }
.button-primary:hover { background: #0a7659; }
.button-ghost { color: var(--text); background: #ffffff; }
.header-cta { color: var(--accent); background: #ffffff; }
.hero { background: #ffffff; }
.hero-art { background: #ffffff; border-color: #d8e7e2; box-shadow: 0 14px 34px rgba(20, 74, 64, .06); }
.art-grid { opacity: .58; }
.orbit { border-color: rgba(13, 139, 104, .28); }
.orbit-two { border-color: rgba(13, 139, 104, .16); }
.orbit-label, .art-caption { color: #73898a; }
.channel-node { background: #ffffff; border-color: #d3e3df; box-shadow: 0 8px 24px rgba(21, 66, 60, .09); }
.signal-core { color: var(--accent); background: #ffffff; border-color: rgba(13, 139, 104, .65); box-shadow: 0 0 30px rgba(13, 139, 104, .10), 0 0 0 10px rgba(13, 139, 104, .04); }
.art-response { background: #ffffff; border-color: #dbe7e4; }
.stats-bar { border-color: #dfe9e7; }
.hero h1 span, .accent { color: var(--accent); }
.core-card, .listener-card { background: #ffffff; border-color: #dce8e5; box-shadow: 0 8px 24px rgba(16, 68, 58, .04); }
.card-number { color: #86a29d; }
.service-tags span { color: #55716e; background: #f7fbfa; border-color: #dce9e5; }
.additional-service { background: #ffffff; border-color: #dce8e5; }
.additional-service:hover { background: #f2fbf8; border-color: rgba(13, 139, 104, .52); }
.additional-service > span { color: #78948f; }
.showcase-section, .keyword-section, .contact-section { background: #ffffff; border-color: #dce8e5; }
.gallery-card { background: #ffffff; border-color: #dce8e5; box-shadow: 0 7px 18px rgba(17, 58, 51, .05); }
.gallery-thumb { background: #f4f7f6; }
.gallery-filter { color: #5e7475; background: #ffffff; border-color: #d7e5e1; }
.gallery-filter:hover { color: var(--accent); border-color: rgba(13, 139, 104, .45); }
.gallery-filter.is-active { color: #ffffff; background: var(--accent); border-color: var(--accent); }
.operation-badge { background: #f7fcfa; border-color: rgba(13, 139, 104, .24); }
.operation-list article { border-color: #dfe9e7; }
.operation-list article > .icon { color: #5d8980; }
.check-list li { color: #3e5756; }
.keyword-demo { background: #ffffff; border-color: #d8e8e3; box-shadow: 0 12px 30px rgba(18, 67, 57, .06); }
.demo-avatar { color: #527b75; background: #eaf6f2; }
.demo-message small { color: #75898b; }
.demo-message p { color: #395252; }
.keyword-match { border-color: rgba(13, 139, 104, .30); background: #fbfefd; }
.demo-reply { background: #f2fbf8; border-color: rgba(13, 139, 104, .20); }
.demo-reply p { color: #42605c; }
.demo-footer, .keyword-copy .keyword-note { color: #6b8481; }
.faq-list details { border-color: #dfe9e7; }
.contact-copy .contact-tip { color: #68817f; }
.contact-handle { color: #39816e; }
.inquiry-form { background: #ffffff; border-color: #d7e5e1; box-shadow: 0 10px 28px rgba(18, 68, 58, .06); }
.inquiry-form label { color: #4b6566; }
.inquiry-form select, .inquiry-form textarea { color: #263f41; background: #ffffff; border-color: #cfdeda; }
.inquiry-form textarea::placeholder, .form-note { color: #74888b; }
.button-form { color: var(--accent); background: #f2fbf8; border-color: rgba(13, 139, 104, .32); }
.site-footer { background: #ffffff; border-color: #dfe9e7; }
.footer-bottom { color: #78908f; border-color: #dfe9e7; }
.lightbox { color: var(--text); background: #ffffff; border-color: #d1dfdb; box-shadow: 0 25px 80px rgba(15, 50, 45, .22); }
.lightbox::backdrop { background: rgba(17, 43, 42, .42); }
.lightbox-header p { color: var(--text); }
.lightbox-control { color: var(--text); background: #ffffff; border-color: #cfdfda; }
.lightbox-stage { background: #f4f7f6; }
@media (max-width: 650px) {
  .main-nav { background: #ffffff; box-shadow: 0 18px 25px rgba(21, 65, 58, .12); }
  .mobile-contact { color: #ffffff; background: var(--accent); border-color: var(--accent); box-shadow: 0 8px 25px rgba(13, 89, 70, .22); }
}