/* 星耀天盾企业官网：蓝色航天视觉系统，原生 CSS，无外部依赖。 */
:root {
  --blue-950: #041326;
  --blue-900: #061b36;
  --blue-850: #082449;
  --blue-800: #0b2f5d;
  --blue-700: #124b91;
  --blue-600: #1c64bd;
  --blue-500: #2d7dd2;
  --blue-100: #e8f1fb;
  --brand: #2158a6;
  --ink: #102a43;
  --text: #3e556b;
  --muted: #6b7f91;
  --line: #dce5ee;
  --paper: #f4f7fb;
  --white: #fff;
  --cyan: #6cccf3;
  --shadow: 0 24px 70px rgba(5, 32, 67, .12);
  --container: 1240px;
  --font: "Segoe UI", "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; }
body { margin: 0; overflow-x: hidden; color: var(--text); background: var(--white); font-family: var(--font); font-size: 16px; line-height: 1.75; -webkit-font-smoothing: antialiased; }
body.nav-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button { color: inherit; }
img, svg { display: block; max-width: 100%; }
h1, h2, h3, h4, p { margin-top: 0; }
h1, h2, h3, h4 { line-height: 1.22; }
h1, h2, h3, h4, strong { color: var(--ink); }
p:last-child { margin-bottom: 0; }
::selection { color: var(--white); background: var(--blue-600); }
:focus-visible { outline: 3px solid var(--cyan); outline-offset: 4px; }
[hidden] { display: none !important; }
.svg-sprite { position: absolute; width: 0; height: 0; overflow: hidden; }
.container, .nav-shell { width: min(calc(100% - 64px), var(--container)); margin-inline: auto; }
.section { padding: 120px 0; }
.skip-link { position: fixed; z-index: 1000; top: 10px; left: 10px; padding: 9px 16px; color: var(--white); border-radius: 5px; background: var(--blue-600); transform: translateY(-160%); }
.skip-link:focus { transform: translateY(0); }

.eyebrow { display: flex; margin-bottom: 23px; gap: 16px; align-items: center; color: var(--blue-600); font-size: 11px; font-weight: 700; letter-spacing: .17em; }
.eyebrow::before { width: 28px; height: 2px; background: currentColor; content: ""; }
.eyebrow span { color: #7890a5; font-size: 10px; font-weight: 500; letter-spacing: .12em; }
.eyebrow-light { color: var(--cyan); }
.eyebrow-light span { color: rgba(213, 231, 248, .62); }
.section-heading { margin-bottom: 55px; }
.heading-row { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(300px, .75fr); gap: 80px; align-items: end; }
.heading-row h2, .about-copy h2, .technology-heading h2, .contact-copy h2 { margin-bottom: 0; color: var(--ink); font-size: clamp(38px, 4vw, 54px); font-weight: 600; letter-spacing: -.045em; }
.heading-row > p { margin-bottom: 4px; color: var(--muted); font-size: 14px; line-height: 1.95; }
.heading-light h2 { color: var(--white); }
.heading-light .heading-row > p { color: rgba(218, 233, 247, .66); }
.panel-kicker { margin-bottom: 15px; color: var(--blue-500); font-size: 10px; font-weight: 700; letter-spacing: .15em; }

.button { display: inline-flex; min-height: 52px; padding: 0 25px; gap: 14px; align-items: center; justify-content: center; border: 1px solid transparent; border-radius: 3px; cursor: pointer; font-size: 13px; font-weight: 650; transition: background .25s ease, border-color .25s ease, color .25s ease, box-shadow .25s ease; }
.button svg, .nav-cta svg, .text-link svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.button-primary { color: var(--white); background: var(--blue-600); box-shadow: 0 12px 28px rgba(13, 91, 180, .22); }
.button-primary:hover { background: #2a79d2; box-shadow: 0 16px 34px rgba(13, 91, 180, .3); }
.button-ghost { color: var(--white); border-color: rgba(255, 255, 255, .35); background: rgba(5, 26, 52, .12); backdrop-filter: blur(5px); }
.button-ghost:hover { border-color: var(--cyan); background: rgba(80, 167, 226, .12); }
.button-full { width: 100%; }

/* 顶部导航 */
.site-header { position: fixed; z-index: 100; top: 0; right: 0; left: 0; border-bottom: 1px solid rgba(255, 255, 255, .13); background: linear-gradient(to bottom, rgba(3, 15, 31, .72), transparent); transition: background .25s ease, box-shadow .25s ease; }
.site-header.scrolled { background: rgba(5, 25, 51, .97); box-shadow: 0 8px 30px rgba(0, 0, 0, .16); backdrop-filter: blur(16px); }
.nav-shell { display: flex; height: 86px; align-items: center; }
.brand { display: inline-flex; flex-shrink: 0; align-items: center; }
.brand img { width: 158px; height: auto; }
.primary-nav { display: flex; margin-left: auto; gap: 25px; align-items: center; }
.primary-nav a { position: relative; padding: 31px 0; color: rgba(237, 245, 252, .75); font-size: 13px; white-space: nowrap; transition: color .2s ease; }
.primary-nav a::after { position: absolute; right: 0; bottom: 20px; left: 0; height: 2px; background: var(--cyan); content: ""; transform: scaleX(0); transition: transform .2s ease; }
.primary-nav a:hover, .primary-nav a.active { color: var(--white); }
.primary-nav a.active::after { transform: scaleX(1); }
.nav-cta { display: inline-flex; min-height: 38px; margin-left: 28px; padding: 0 15px; gap: 9px; align-items: center; color: var(--white); border: 1px solid rgba(255, 255, 255, .3); border-radius: 3px; font-size: 12px; transition: border-color .2s ease, background .2s ease; }
.nav-cta:hover { border-color: var(--cyan); background: rgba(108, 204, 243, .1); }
.nav-cta svg { width: 14px; height: 14px; }
.nav-toggle { display: none; width: 42px; height: 42px; margin-left: auto; padding: 9px; border: 0; background: transparent; cursor: pointer; }
.nav-toggle span { display: block; width: 23px; height: 1.5px; margin: 5px 0; background: var(--white); transition: transform .25s ease, opacity .25s ease; }

/* 语言切换 */
.lang-switch { display: inline-flex; margin-left: 16px; padding: 3px; gap: 2px; align-items: center; border: 1px solid rgba(255, 255, 255, .22); border-radius: 3px; background: rgba(255, 255, 255, .05); }
.lang-option { min-width: 40px; padding: 5px 9px; color: rgba(237, 245, 252, .62); border: 0; border-radius: 2px; background: transparent; cursor: pointer; font-size: 11px; font-weight: 600; letter-spacing: .04em; white-space: nowrap; transition: color .2s ease, background .2s ease; }
.lang-option:hover { color: var(--white); background: rgba(255, 255, 255, .08); }
.lang-option.active { color: var(--blue-950); background: var(--cyan); }
.lang-option:focus-visible { outline: 2px solid var(--cyan); outline-offset: 2px; }

/* 首页主视觉 */
.hero { position: relative; display: flex; min-height: 920px; align-items: center; overflow: hidden; color: var(--white); background: var(--blue-950); }
.hero-background { position: absolute; inset: 0; background-image: url("assets/hero-satellite.png"); background-position: 72% center; background-size: cover; transform: scale(1.01); animation: heroReveal 1.4s ease both; }
.hero-overlay { position: absolute; inset: 0; background: linear-gradient(90deg, rgba(3, 16, 34, .96) 0%, rgba(4, 23, 49, .84) 34%, rgba(4, 20, 42, .25) 67%, rgba(3, 15, 31, .12) 100%), linear-gradient(0deg, rgba(4, 18, 38, .92) 0%, transparent 38%, rgba(2, 12, 25, .18) 100%); }
.hero-content { position: relative; z-index: 2; padding-top: 60px; padding-bottom: 135px; }
.hero-eyebrow { display: flex; margin-bottom: 27px; gap: 13px; align-items: center; color: var(--cyan); font-size: 11px; font-weight: 650; letter-spacing: .24em; }
.hero-eyebrow span { width: 34px; height: 1px; background: currentColor; }
.hero h1 { max-width: 750px; margin-bottom: 25px; color: var(--white); font-size: clamp(50px, 5.3vw, 74px); font-weight: 550; line-height: 1.16; letter-spacing: -.055em; text-shadow: 0 3px 20px rgba(0, 0, 0, .18); }
.hero-subtitle { display: flex; margin-bottom: 20px; gap: 13px; align-items: center; color: #d4e6f5; font-size: 15px; font-weight: 450; letter-spacing: .05em; }
.hero-subtitle i { width: 3px; height: 3px; border-radius: 50%; background: var(--cyan); }
.hero-description { max-width: 590px; margin-bottom: 36px; color: rgba(220, 235, 247, .7); font-size: 15px; line-height: 1.9; }
.hero-actions { display: flex; gap: 13px; flex-wrap: wrap; }
.hero-coordinate { position: absolute; z-index: 2; top: 50%; right: 30px; display: flex; gap: 24px; color: rgba(204, 227, 244, .42); font-size: 8px; letter-spacing: .2em; transform: rotate(90deg) translateX(50%); transform-origin: right center; }
.hero-bottom { position: absolute; z-index: 2; right: 0; bottom: 0; left: 0; border-top: 1px solid rgba(255, 255, 255, .15); background: rgba(5, 25, 51, .52); backdrop-filter: blur(10px); }
.hero-metrics { display: grid; grid-template-columns: repeat(4, 1fr); }
.hero-metrics > div { display: flex; min-height: 125px; padding: 24px 30px; flex-direction: column; justify-content: center; border-left: 1px solid rgba(255, 255, 255, .12); }
.hero-metrics > div:last-child { border-right: 1px solid rgba(255, 255, 255, .12); }
.hero-metrics strong { margin-bottom: 7px; color: var(--white); font-size: 27px; font-weight: 500; letter-spacing: -.02em; }
.hero-metrics strong small { margin-left: 3px; color: var(--cyan); font-size: 15px; font-weight: 500; }
.hero-metrics span { color: rgba(213, 230, 243, .57); font-size: 11px; }
.scroll-cue { position: absolute; z-index: 3; right: 28px; bottom: 160px; display: flex; gap: 10px; align-items: center; color: rgba(220, 237, 249, .55); font-size: 8px; letter-spacing: .2em; transform: rotate(90deg); }
.scroll-cue span { width: 34px; height: 1px; overflow: hidden; background: rgba(255, 255, 255, .3); }

/* 企业简介 */
.about-section { background: var(--white); }
.about-layout { display: grid; grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr); gap: 90px; align-items: center; }
.about-copy h2 { margin-bottom: 28px; }
.about-lead { margin-bottom: 18px; color: #2b465e; font-size: 16px; line-height: 2; }
.about-copy > p:not(.eyebrow):not(.about-lead) { margin-bottom: 28px; color: var(--muted); font-size: 14px; line-height: 2; }
.text-link { display: inline-flex; gap: 12px; align-items: center; color: var(--blue-600); font-size: 13px; font-weight: 650; }
.text-link:hover { color: var(--blue-800); }
.about-visual { position: relative; padding: 0 0 36px 36px; }
.image-frame { position: relative; z-index: 1; height: 470px; overflow: hidden; box-shadow: var(--shadow); }
.image-frame::after { position: absolute; inset: 0; background: linear-gradient(0deg, rgba(5, 30, 59, .5), transparent 45%); content: ""; }
.image-frame img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s ease; }
.about-visual:hover .image-frame img { transform: scale(1.025); }
.about-image-caption { position: absolute; z-index: 2; right: 0; bottom: 0; min-width: 330px; padding: 24px 28px; color: var(--white); background: var(--blue-800); box-shadow: 0 16px 36px rgba(7, 42, 83, .22); }
.about-image-caption span { display: block; margin-bottom: 8px; color: var(--cyan); font-size: 8px; font-weight: 650; letter-spacing: .16em; }
.about-image-caption strong { color: var(--white); font-size: 17px; font-weight: 550; }
.about-orbit { position: absolute; bottom: 0; left: 0; width: 140px; height: 140px; border: 1px solid #d4e3f1; border-radius: 50%; }
.about-orbit::after { position: absolute; inset: 24px; border: 1px solid #e4edf5; border-radius: 50%; content: ""; }
.about-principles { display: grid; margin-top: 80px; padding-top: 35px; border-top: 1px solid var(--line); grid-template-columns: repeat(3, 1fr); }
.about-principles > div { display: grid; padding: 0 35px; grid-template-columns: 35px 1fr; border-right: 1px solid var(--line); }
.about-principles > div:first-child { padding-left: 0; }
.about-principles > div:last-child { border-right: 0; }
.about-principles span { color: var(--blue-500); font-size: 11px; font-weight: 700; grid-row: 1 / 3; }
.about-principles strong { margin-bottom: 8px; font-size: 16px; font-weight: 650; }
.about-principles p { margin-bottom: 0; color: var(--muted); font-size: 12px; }

/* 产品与能力 */
.products-section { background: var(--paper); }
.capability-map { display: grid; margin-bottom: 68px; gap: 26px; grid-template-columns: repeat(2, 1fr); }
.capability-track { display: flex; padding: 34px 34px 26px; flex-direction: column; border: 1px solid var(--line); background: var(--white); box-shadow: 0 14px 40px rgba(8, 37, 69, .05); }
.capability-track-head { margin-bottom: 20px; padding-bottom: 4px; }
.capability-track-head > span { display: block; margin-bottom: 10px; color: var(--blue-500); font-size: 9px; font-weight: 700; letter-spacing: .2em; }
.capability-track-head h3 { display: flex; margin-bottom: 12px; gap: 10px; align-items: baseline; flex-wrap: wrap; font-size: 21px; font-weight: 650; }
.capability-track-head h3 small { color: var(--muted); font-size: 11px; font-weight: 400; letter-spacing: .04em; }
.capability-track-head p { margin-bottom: 0; color: var(--muted); font-size: 12.5px; line-height: 1.85; }
.capability-list { display: grid; margin: 0; padding: 0; gap: 0 26px; list-style: none; grid-template-columns: repeat(2, 1fr); }
.capability-list li { display: grid; padding: 16px 0; gap: 12px; grid-template-columns: 26px 1fr; border-top: 1px dashed var(--line); }
.capability-no { color: var(--blue-500); font-size: 10px; font-weight: 700; letter-spacing: .05em; }
.capability-list strong { display: block; margin-bottom: 2px; font-size: 13.5px; font-weight: 650; }
.capability-list small { display: block; margin-bottom: 5px; color: var(--blue-500); font-size: 8.5px; font-weight: 600; letter-spacing: .07em; }
.capability-list p { margin-bottom: 0; color: var(--muted); font-size: 11.5px; line-height: 1.75; }
.explorer-heading { display: flex; margin-bottom: 28px; gap: 34px; align-items: baseline; flex-wrap: wrap; }
.explorer-heading .eyebrow { margin-bottom: 0; }
.explorer-heading > p { max-width: 560px; margin-bottom: 0; color: var(--muted); font-size: 13px; line-height: 1.85; }
.product-explorer { overflow: hidden; border: 1px solid var(--line); background: var(--white); box-shadow: 0 18px 50px rgba(8, 37, 69, .07); }
.product-tabs { display: grid; border-bottom: 1px solid var(--line); grid-template-columns: repeat(7, 1fr); }
.product-tab { position: relative; display: grid; min-height: 120px; padding: 24px 13px; grid-template-columns: 20px 1fr; align-content: center; color: var(--muted); border: 0; border-right: 1px solid var(--line); background: #fbfcfe; cursor: pointer; text-align: left; transition: background .25s ease, color .25s ease; }
.product-tab:last-child { border-right: 0; }
.product-tab::after { position: absolute; right: 0; bottom: -1px; left: 0; height: 3px; background: var(--blue-600); content: ""; transform: scaleX(0); transition: transform .25s ease; }
.product-tab > span { color: #9bacc0; font-size: 10px; font-weight: 700; grid-row: 1 / 3; }
.product-tab strong { color: inherit; font-size: 13.5px; font-weight: 600; }
.product-tab small { margin-top: 6px; color: #96a8b9; font-size: 7.5px; letter-spacing: .04em; }
.product-tab:hover { color: var(--blue-700); background: var(--blue-100); }
.product-tab.active { color: var(--blue-700); background: var(--white); }
.product-tab.active::after { transform: scaleX(1); }
.product-panel { display: grid; min-height: 490px; grid-template-columns: 1.15fr .85fr; }
.product-image-wrap { position: relative; min-height: 490px; overflow: hidden; background: var(--blue-900); }
.product-image-wrap::after { position: absolute; inset: 0; background: linear-gradient(0deg, rgba(4, 24, 49, .52), transparent 50%); content: ""; }
.product-image-wrap img { width: 100%; height: 100%; object-fit: cover; transition: opacity .2s ease, transform .5s ease; }
.product-image-wrap img.changing { opacity: .25; }
.product-image-wrap > span { position: absolute; z-index: 1; bottom: 27px; left: 29px; color: rgba(255, 255, 255, .8); font-size: 9px; font-weight: 650; letter-spacing: .18em; }
.product-detail { display: flex; padding: 50px 45px; flex-direction: column; justify-content: center; }
.product-detail h3 { margin-bottom: 18px; font-size: 30px; font-weight: 600; letter-spacing: -.03em; }
.product-detail > p:not(.panel-kicker) { margin-bottom: 24px; color: var(--muted); font-size: 14px; line-height: 1.9; }
.check-list { display: grid; margin: 0 0 26px; padding: 0; gap: 11px; list-style: none; }
.check-list li { display: flex; gap: 10px; align-items: flex-start; color: #3b556c; font-size: 12px; }
.check-list svg { width: 17px; height: 17px; margin-top: 2px; padding: 3px; flex-shrink: 0; color: var(--blue-600); border-radius: 50%; background: var(--blue-100); fill: none; stroke: currentColor; stroke-width: 2; }
.product-note { align-self: flex-start; padding: 7px 12px; color: var(--blue-700); border-left: 2px solid var(--blue-500); background: var(--blue-100); font-size: 10px; }
.lifecycle { display: grid; margin-top: 28px; padding: 27px 30px; align-items: center; border: 1px solid var(--line); background: rgba(255, 255, 255, .65); grid-template-columns: 170px 1fr; }
.lifecycle-heading { display: flex; flex-direction: column; }
.lifecycle-heading span { margin-bottom: 5px; color: var(--blue-500); font-size: 8px; font-weight: 700; letter-spacing: .13em; }
.lifecycle-heading strong { font-size: 14px; font-weight: 650; }
.lifecycle ol { display: grid; margin: 0; padding: 0; grid-template-columns: repeat(6, 1fr); list-style: none; }
.lifecycle li { position: relative; display: flex; gap: 7px; align-items: center; color: #4e687d; font-size: 11px; white-space: nowrap; }
.lifecycle li:not(:last-child)::after { width: 18px; height: 1px; margin-left: auto; margin-right: 9px; background: #c9d8e6; content: ""; }
.lifecycle li span { color: var(--blue-500); font-size: 9px; }

/* 技术优势 */
.technology-section { position: relative; padding: 120px 0 0; overflow: hidden; background: var(--blue-900); }
.technology-background { position: absolute; inset: 0; opacity: .24; background-image: linear-gradient(90deg, rgba(4, 20, 43, .96), rgba(5, 30, 63, .82)), url("assets/satellite-cleanroom.png"); background-position: center; background-size: cover; }
.technology-content { position: relative; }
.technology-heading { max-width: 680px; margin-bottom: 55px; }
.technology-heading h2 { margin-bottom: 24px; color: var(--white); }
.technology-heading > p:not(.eyebrow) { max-width: 570px; color: rgba(213, 230, 244, .66); font-size: 14px; }
.technology-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: rgba(157, 196, 227, .16); }
.technology-card { min-height: 325px; padding: 33px 28px; background: rgba(6, 31, 63, .88); backdrop-filter: blur(8px); transition: background .25s ease; }
.technology-card:hover { background: rgba(13, 59, 111, .92); }
.tech-icon { display: inline-flex; width: 46px; height: 46px; margin-bottom: 38px; align-items: center; justify-content: center; color: var(--cyan); border: 1px solid rgba(108, 204, 243, .3); }
.tech-icon svg { width: 24px; height: 24px; fill: none; stroke: currentColor; stroke-width: 1.4; stroke-linecap: round; stroke-linejoin: round; }
.technology-card small { display: block; margin-bottom: 12px; color: rgba(133, 189, 226, .58); font-size: 8px; font-weight: 650; letter-spacing: .12em; }
.technology-card h3 { margin-bottom: 15px; color: var(--white); font-size: 19px; font-weight: 550; }
.technology-card p { margin-bottom: 0; color: rgba(204, 224, 239, .6); font-size: 12px; line-height: 1.9; }
.technology-stats { display: grid; margin-top: 70px; grid-template-columns: repeat(4, 1fr); }
.technology-stats > div { display: flex; min-height: 145px; padding: 25px 32px; flex-direction: column; justify-content: center; border-left: 1px solid rgba(154, 198, 227, .17); background: rgba(4, 23, 49, .72); }
.technology-stats > div:last-child { border-right: 1px solid rgba(154, 198, 227, .17); }
.technology-stats strong { margin-bottom: 8px; color: var(--white); font-size: 36px; font-weight: 400; line-height: 1; }
.technology-stats strong small { margin-left: 3px; color: var(--cyan); font-size: 16px; }
.technology-stats span { color: rgba(198, 222, 239, .55); font-size: 10px; }

/* 应用场景 */
.applications-section { position: relative; padding: 120px 0; overflow: hidden; background: var(--blue-950); }
.applications-background { position: absolute; inset: 0; background-image: linear-gradient(90deg, rgba(3, 16, 34, .93), rgba(4, 23, 48, .72)), url("assets/earth-orbit.png"); background-position: center; background-size: cover; }
.applications-content { position: relative; }
.application-explorer { border: 1px solid rgba(171, 207, 234, .2); background: rgba(4, 24, 48, .68); backdrop-filter: blur(12px); }
.application-tabs { display: grid; border-bottom: 1px solid rgba(171, 207, 234, .17); grid-template-columns: repeat(6, 1fr); }
.application-tab { position: relative; min-height: 72px; padding: 0 12px; color: rgba(217, 233, 245, .62); border: 0; border-right: 1px solid rgba(171, 207, 234, .12); background: rgba(4, 25, 51, .5); cursor: pointer; font-size: 12px; transition: color .2s ease, background .2s ease; }
.application-tab:last-child { border-right: 0; }
.application-tab::after { position: absolute; right: 20%; bottom: -1px; left: 20%; height: 2px; background: var(--cyan); content: ""; transform: scaleX(0); transition: transform .2s ease; }
.application-tab:hover, .application-tab.active { color: var(--white); background: rgba(39, 111, 177, .22); }
.application-tab.active::after { transform: scaleX(1); }
.application-panel { display: grid; min-height: 340px; padding: 0; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); gap: 0; align-items: stretch; }
.application-figure { position: relative; overflow: hidden; background: var(--blue-900); }
.application-figure::after { position: absolute; inset: 0; background: linear-gradient(90deg, transparent 55%, rgba(4, 24, 48, .82)); content: ""; }
.application-figure img { width: 100%; height: 100%; min-height: 340px; object-fit: cover; opacity: 1; transition: opacity .35s ease, transform .8s ease; }
.application-figure img.changing { opacity: .2; }
.application-explorer:hover .application-figure img { transform: scale(1.03); }
.application-figure > span { position: absolute; z-index: 1; bottom: 22px; left: 26px; color: rgba(255, 255, 255, .82); font-size: 9px; font-weight: 650; letter-spacing: .18em; }
.application-copy { position: relative; display: flex; padding: 48px 50px; flex-direction: column; justify-content: center; }
.application-number { position: absolute; top: 26px; right: 40px; color: rgba(108, 204, 243, .16); font-size: 74px; font-weight: 300; line-height: 1; }
.application-panel h3 { margin-bottom: 14px; color: var(--white); font-size: 30px; font-weight: 550; }
.application-panel .panel-kicker { color: var(--cyan); }
.application-panel .application-copy > p:not(.panel-kicker) { margin-bottom: 0; color: rgba(208, 227, 241, .62); font-size: 13px; }
.application-panel ul { margin: 0; padding: 0; list-style: none; }
.application-panel li { position: relative; margin: 12px 0; padding: 0 0 12px 18px; color: #d0e3f1; border-bottom: 1px solid rgba(171, 207, 234, .12); font-size: 12px; }
.application-panel li::before { position: absolute; top: 10px; left: 0; width: 5px; height: 5px; border-radius: 50%; background: var(--cyan); content: ""; }

/* 联系我们 */
.contact-section { position: relative; padding: 115px 0; overflow: hidden; background: linear-gradient(125deg, var(--blue-950), var(--blue-800)); }
.contact-orbit { position: absolute; top: -340px; left: -220px; width: 760px; height: 760px; border: 1px solid rgba(108, 204, 243, .1); border-radius: 50%; }
.contact-orbit::before, .contact-orbit::after { position: absolute; border: 1px solid rgba(108, 204, 243, .08); border-radius: 50%; content: ""; }
.contact-orbit::before { inset: 90px; }
.contact-orbit::after { inset: 190px; }
.contact-layout { position: relative; display: grid; grid-template-columns: minmax(0, .9fr) minmax(460px, 1.1fr); gap: 100px; align-items: center; }
.contact-copy h2 { margin-bottom: 25px; color: var(--white); }
.contact-copy > p:not(.eyebrow) { max-width: 490px; color: rgba(211, 229, 243, .65); font-size: 14px; line-height: 1.95; }
.contact-features { display: grid; margin-top: 38px; gap: 23px; }
.contact-features > div { display: flex; gap: 15px; align-items: center; }
.contact-features svg { width: 36px; height: 36px; padding: 8px; flex-shrink: 0; color: var(--cyan); border: 1px solid rgba(108, 204, 243, .25); fill: none; stroke: currentColor; stroke-width: 1.4; stroke-linecap: round; stroke-linejoin: round; }
.contact-features strong { display: block; margin-bottom: 4px; color: #edf6fc; font-size: 13px; font-weight: 550; }
.contact-features small { display: block; color: rgba(192, 218, 236, .5); font-size: 10px; }
.inquiry-card { padding: 35px; color: var(--text); background: var(--white); box-shadow: 0 28px 70px rgba(0, 0, 0, .22); }
.form-heading { display: flex; margin-bottom: 25px; align-items: center; justify-content: space-between; }
.form-heading > div { display: flex; flex-direction: column; }
.form-heading small { margin-bottom: 6px; color: var(--blue-500); font-size: 8px; font-weight: 700; letter-spacing: .15em; }
.form-heading strong { font-size: 19px; font-weight: 650; }
.form-heading > span { color: #98aaba; font-size: 9px; }

/* 邮件联系卡片 */
.mail-block { display: flex; flex-direction: column; }
.mail-lead { margin-bottom: 22px; color: #425d72; font-size: 13px; line-height: 1.9; }
.mail-address { display: flex; padding: 18px 20px; gap: 14px; align-items: center; border: 1px solid var(--line); border-radius: 3px; background: var(--paper); transition: border-color .2s ease, background .2s ease, box-shadow .2s ease; }
.mail-address:hover { border-color: var(--blue-500); background: var(--white); box-shadow: 0 12px 30px rgba(10, 43, 78, .07); }
.mail-address-text { display: flex; min-width: 0; flex-direction: column; }
.mail-address-text small { margin-bottom: 4px; color: #8a9dad; font-size: 9px; letter-spacing: .08em; }
.mail-address-text strong { color: var(--blue-700); font-size: 17px; font-weight: 650; word-break: break-all; }
.mail-actions { display: flex; margin-top: 20px; gap: 10px; }
.mail-actions .button { flex: 1; }
.mail-tip { margin: 16px 2px 0; color: #899dad; font-size: 10px; line-height: 1.8; }
.button-dark { color: var(--white); background: var(--blue-800); }
.button-dark:hover { background: var(--blue-600); }
.button-outline-dark { color: var(--ink); border-color: var(--line); background: var(--white); }
.button-outline-dark:hover { border-color: var(--blue-500); }

/* 页脚 */
.site-footer { color: var(--muted); background: #f7f9fc; }
.footer-main { display: grid; min-height: 210px; padding: 48px 0; gap: 60px; align-items: center; grid-template-columns: 1fr auto; }
.footer-brand img { width: 185px; height: auto; }
.footer-brand p { margin: 16px 0 0; color: #7d91a4; font-size: 11px; }
.footer-nav { display: flex; gap: 75px; }
.footer-nav > div { display: flex; flex-direction: column; gap: 8px; }
.footer-nav strong { margin-bottom: 5px; color: var(--ink); font-size: 12px; font-weight: 650; }
.footer-nav a { color: #73899c; font-size: 11px; transition: color .2s ease; }
.footer-nav a:hover { color: var(--blue-600); }
.footer-bottom { display: flex; min-height: 62px; align-items: center; justify-content: space-between; border-top: 1px solid var(--line); color: #8b9dad; font-size: 9px; }
.back-to-top { position: fixed; z-index: 50; right: 22px; bottom: 22px; width: 42px; height: 42px; color: var(--white); border: 1px solid rgba(255, 255, 255, .18); border-radius: 50%; background: rgba(7, 37, 72, .9); box-shadow: 0 8px 25px rgba(3, 24, 49, .18); cursor: pointer; opacity: 0; transform: translateY(12px); pointer-events: none; transition: opacity .2s ease, transform .2s ease, background .2s ease; }
.back-to-top.visible { opacity: 1; transform: translateY(0); pointer-events: auto; }
.back-to-top:hover { background: var(--blue-600); }
.toast { position: fixed; z-index: 200; bottom: 28px; left: 50%; max-width: calc(100% - 40px); padding: 11px 20px; color: var(--white); border-radius: 4px; background: var(--blue-950); box-shadow: var(--shadow); font-size: 12px; opacity: 0; transform: translate(-50%, 16px); pointer-events: none; transition: opacity .25s ease, transform .25s ease; }
.toast.show { opacity: 1; transform: translate(-50%, 0); }

.js .reveal { opacity: 0; transform: translateY(20px); transition: opacity .65s ease, transform .65s ease; }
.js .reveal.is-visible { opacity: 1; transform: translateY(0); }
@keyframes heroReveal { from { opacity: .3; transform: scale(1.045); } to { opacity: 1; transform: scale(1.01); } }

/* 英文版排版适配：拉丁字符宽度大于汉字，标题与导航需相应收敛 */
html[data-lang="en"] .hero h1 { max-width: 880px; font-size: clamp(38px, 4.1vw, 58px); letter-spacing: -.035em; }
html[data-lang="en"] .heading-row h2, html[data-lang="en"] .about-copy h2, html[data-lang="en"] .technology-heading h2, html[data-lang="en"] .contact-copy h2 { font-size: clamp(30px, 3.3vw, 44px); letter-spacing: -.028em; }
html[data-lang="en"] .hero-subtitle { gap: 10px; font-size: 13.5px; letter-spacing: .02em; }
html[data-lang="en"] .hero-description { max-width: 660px; }
html[data-lang="en"] .primary-nav { gap: 21px; }
html[data-lang="en"] .capability-track-head h3 { font-size: 19px; }
html[data-lang="en"] .lifecycle-heading strong { font-size: 13px; }
html[data-lang="en"] .product-detail h3, html[data-lang="en"] .application-panel h3 { font-size: 26px; letter-spacing: -.02em; }
html[data-lang="en"] .eyebrow span { letter-spacing: .08em; }

@media (max-width: 1180px) {
  .primary-nav { gap: 18px; }
  .primary-nav a { font-size: 12px; }
  .nav-cta { margin-left: 20px; }
  .lang-switch { margin-left: 12px; }
  .lang-option { min-width: 36px; padding: 5px 7px; font-size: 10.5px; }
  .about-layout { gap: 55px; }
  .technology-card { padding-inline: 22px; }
  .contact-layout { gap: 55px; }
}

@media (max-width: 1060px) {
  html { scroll-padding-top: 72px; }
  .container, .nav-shell { width: min(calc(100% - 44px), var(--container)); }
  .section { padding: 95px 0; }
  .nav-shell { height: 74px; }
  .brand img { width: 145px; }
  .nav-cta { margin-left: auto; margin-right: 12px; }
  .lang-switch { margin-left: 0; }
  .nav-toggle { display: block; margin-left: 0; }
  .nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
  .nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }
  .primary-nav { position: fixed; top: 74px; right: 0; left: 0; display: flex; max-height: calc(100vh - 74px); margin: 0; padding: 20px 25px 28px; overflow: auto; flex-direction: column; gap: 0; align-items: stretch; border-top: 1px solid rgba(255, 255, 255, .1); background: rgba(5, 25, 51, .99); opacity: 0; transform: translateY(-10px); visibility: hidden; transition: opacity .2s ease, transform .2s ease, visibility .2s ease; }
  .primary-nav.open { opacity: 1; transform: translateY(0); visibility: visible; }
  .primary-nav a { padding: 14px 3px; border-bottom: 1px solid rgba(255, 255, 255, .08); font-size: 14px; }
  .primary-nav a::after { display: none; }
  .hero { min-height: 860px; }
  .hero-content { padding-bottom: 155px; }
  .hero h1 { font-size: 60px; }
  .hero-coordinate, .scroll-cue { display: none; }
  .about-layout { grid-template-columns: 1fr 1.1fr; gap: 38px; }
  .image-frame { height: 420px; }
  .about-visual { padding-left: 20px; }
  .heading-row { gap: 45px; }
  .product-panel { grid-template-columns: 1fr 1fr; }
  .product-detail { padding: 40px 32px; }
  .lifecycle { grid-template-columns: 1fr; gap: 20px; }
  .technology-grid { grid-template-columns: repeat(2, 1fr); }
  .technology-card { min-height: 280px; }
  .application-panel { grid-template-columns: minmax(0, .95fr) minmax(0, 1fr); }
  .application-figure img { min-height: 380px; }
  .application-copy { padding: 40px 35px; }
  .application-number { top: 20px; right: 26px; font-size: 58px; }
  .contact-layout { grid-template-columns: .8fr 1.2fr; gap: 40px; }
}

@media (max-width: 820px) {
  .heading-row { grid-template-columns: 1fr; gap: 22px; }
  .heading-row > p { max-width: 650px; }
  .hero { min-height: 850px; }
  .hero-background { background-image: url("assets/hero-satellite-mobile.png"); background-position: 50% 18%; background-size: cover; }
  .hero-overlay { background: linear-gradient(90deg, rgba(3, 16, 34, .94), rgba(4, 23, 49, .65)), linear-gradient(0deg, rgba(4, 18, 38, .94), transparent 48%); }
  .hero-content { padding-top: 80px; }
  .hero h1 { font-size: 52px; }
  .hero-metrics > div { padding-inline: 20px; }
  .hero-metrics strong { font-size: 24px; }
  .about-layout { grid-template-columns: 1fr; gap: 45px; }
  .about-copy { max-width: 650px; }
  .about-copy h2 br { display: none; }
  .about-visual { max-width: 680px; }
  .about-principles { margin-top: 55px; }
  .about-principles > div { padding-inline: 20px; }
  .product-tabs { grid-template-columns: repeat(4, 1fr); }
  .product-tab:nth-child(4n) { border-right: 0; }
  .product-tab:nth-child(-n+4) { border-bottom: 1px solid var(--line); }
  .product-tab:last-child { grid-column: span 2; }
  .capability-map { gap: 20px; grid-template-columns: 1fr; }
  .capability-list { grid-template-columns: repeat(2, 1fr); }
  .product-panel { grid-template-columns: 1fr; }
  .product-image-wrap { min-height: 370px; }
  .product-detail { padding: 38px; }
  .lifecycle ol { grid-template-columns: repeat(3, 1fr); gap: 17px 0; }
  .lifecycle li:not(:last-child)::after { display: none; }
  .technology-section, .applications-section { padding-top: 95px; }
  .technology-stats { grid-template-columns: repeat(2, 1fr); }
  .technology-stats > div { min-height: 125px; border-bottom: 1px solid rgba(154, 198, 227, .17); }
  .application-tabs { grid-template-columns: repeat(3, 1fr); }
  .application-tab:nth-child(-n+3) { border-bottom: 1px solid rgba(171, 207, 234, .12); }
  .application-panel { grid-template-columns: 1fr; }
  .application-figure img { min-height: 300px; }
  .application-copy { padding: 36px 32px; }
  .contact-layout { grid-template-columns: 1fr; gap: 45px; }
  .contact-copy { max-width: 650px; }
  .contact-copy h2 br { display: none; }
  .footer-main { gap: 35px; }
  .footer-nav { gap: 40px; }
}

@media (max-width: 600px) {
  .container, .nav-shell { width: min(calc(100% - 32px), var(--container)); }
  .section { padding: 76px 0; }
  .eyebrow { margin-bottom: 18px; gap: 10px; font-size: 9px; letter-spacing: .13em; }
  .eyebrow span { font-size: 9px; }
  .heading-row h2, .about-copy h2, .technology-heading h2, .contact-copy h2 { font-size: 34px; }
  .section-heading { margin-bottom: 36px; }
  .nav-shell { height: 68px; }
  .brand img { width: 132px; }
  .nav-cta { display: none; }
  .lang-switch { margin-left: auto; margin-right: 8px; }
  .primary-nav { top: 68px; max-height: calc(100vh - 68px); }
  .hero { min-height: 840px; align-items: flex-start; }
  .hero-background { background-image: url("assets/hero-satellite-mobile.png"); background-position: 50% 18%; background-size: cover; }
  .hero-content { padding-top: 145px; padding-bottom: 215px; }
  .hero-eyebrow { font-size: 9px; letter-spacing: .17em; }
  .hero h1 { font-size: 42px; line-height: 1.2; }
  .hero-subtitle { gap: 8px; flex-wrap: wrap; font-size: 11px; }
  .hero-description { font-size: 13px; }
  .hero-actions { display: grid; grid-template-columns: 1fr 1fr; }
  .hero-actions .button { min-height: 48px; padding-inline: 12px; font-size: 11px; }
  .hero-bottom { background: rgba(5, 25, 51, .75); }
  .hero-metrics { grid-template-columns: repeat(2, 1fr); }
  .hero-metrics > div { min-height: 90px; padding: 15px 16px; border-bottom: 1px solid rgba(255, 255, 255, .12); }
  .hero-metrics > div:nth-child(odd) { border-left: 0; }
  .hero-metrics > div:last-child { border-right: 0; }
  .hero-metrics strong { margin-bottom: 4px; font-size: 20px; }
  .hero-metrics span { font-size: 9px; }
  .about-lead { font-size: 14px; }
  .about-visual { padding: 0 0 28px 12px; }
  .image-frame { height: 320px; }
  .about-image-caption { min-width: 0; width: calc(100% - 28px); padding: 18px 20px; }
  .about-image-caption strong { font-size: 14px; }
  .about-principles { grid-template-columns: 1fr; padding-top: 0; }
  .about-principles > div { padding: 22px 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .about-principles > div:last-child { border-bottom: 0; }
  .product-tabs { grid-template-columns: repeat(2, 1fr); }
  .product-tab:nth-child(2n) { border-right: 0; }
  .product-tab:nth-child(-n+6) { border-bottom: 1px solid var(--line); }
  .product-tab { min-height: 100px; padding: 18px 14px; grid-template-columns: 23px 1fr; }
  .product-tab strong { font-size: 12px; }
  .product-tab small { font-size: 7px; }
  .capability-map { margin-bottom: 46px; }
  .capability-track { padding: 26px 20px 20px; }
  .capability-track-head h3 { font-size: 18px; }
  .capability-list { grid-template-columns: 1fr; gap: 0; }
  .capability-list li { padding: 13px 0; }
  .explorer-heading { margin-bottom: 22px; gap: 14px; }
  .explorer-heading > p { font-size: 12px; }
  .product-image-wrap { min-height: 280px; }
  .product-detail { padding: 30px 23px; }
  .product-detail h3 { font-size: 25px; }
  .lifecycle { padding: 24px 20px; }
  .lifecycle ol { grid-template-columns: repeat(2, 1fr); }
  .technology-section { padding: 76px 0 0; }
  .technology-heading { margin-bottom: 38px; }
  .technology-grid { grid-template-columns: 1fr; }
  .technology-card { min-height: auto; padding: 28px 25px; }
  .tech-icon { margin-bottom: 25px; }
  .technology-stats { margin-top: 45px; }
  .technology-stats > div { min-height: 110px; padding: 20px 17px; }
  .technology-stats strong { font-size: 29px; }
  .technology-stats span { font-size: 9px; }
  .applications-section { padding: 76px 0; }
  .application-tab { min-height: 58px; padding-inline: 5px; font-size: 11px; }
  .application-panel { min-height: auto; padding: 0; grid-template-columns: 1fr; gap: 0; }
  .application-figure img { min-height: 230px; }
  .application-copy { padding: 30px 23px; }
  .application-number { top: 18px; right: 22px; font-size: 46px; }
  .application-panel h3 { font-size: 26px; }
  .application-panel ul { grid-column: auto; }
  .contact-section { padding: 76px 0; }
  .inquiry-card { padding: 25px 20px; }
  .form-heading > span { display: none; }
  .mail-lead { font-size: 12px; }
  .mail-address { padding: 15px 16px; gap: 12px; }
  .mail-address-text strong { font-size: 15px; }
  .mail-actions { flex-direction: column; }
  .mail-actions .button { width: 100%; }
  .footer-main { padding: 38px 0 30px; grid-template-columns: 1fr; gap: 32px; }
  .footer-nav { justify-content: space-between; gap: 25px; }
  .footer-bottom { padding: 18px 0; flex-direction: column; gap: 7px; align-items: flex-start; }
}

@media (max-width: 370px) {
  .hero h1 { font-size: 37px; }
  .hero-actions { grid-template-columns: 1fr; }
  .hero-content { padding-bottom: 225px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; scroll-behavior: auto !important; }
  .js .reveal { opacity: 1; transform: none; }
}