/*
 * 花卷科技静态官网
 * 视觉基线：暖白纸张质感、品牌红、克制黑色与精密技术网格。
 * 响应式断点集中在文件末尾，便于后续维护。
 */

:root {
  --paper: #f3f1eb;
  --paper-deep: #e8e5de;
  --ink: #121313;
  --muted: #686a67;
  --line: rgba(18, 19, 19, 0.14);
  --red: #d61f32;
  --red-dark: #ad1424;
  --night: #111313;
  --night-soft: #1a1c1c;
  --white: #f8f7f3;
  --max-width: 1240px;
  --radius: 26px;
  --ease: cubic-bezier(0.2, 0.8, 0.2, 1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
body.dialog-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }
button { color: inherit; }
img { display: block; max-width: 100%; }
.section-shell { width: min(calc(100% - 48px), var(--max-width)); margin-inline: auto; }
.skip-link { position: fixed; left: 16px; top: -60px; z-index: 100; padding: 12px 16px; background: var(--ink); color: white; border-radius: 8px; }
.skip-link:focus { top: 16px; }

/*
 * 品牌标识直接使用独立透明 PNG，不再依赖 CSS 裁切或背景混合。
 */
.brand { display: inline-flex; align-items: center; gap: 12px; position: relative; z-index: 2; }
.brand-mark { display: grid; place-items: center; width: 42px; height: 42px; flex: 0 0 auto; }
.brand-mark img { width: 100%; height: 100%; object-fit: contain; }
.brand-copy { display: grid; line-height: 1; }
.brand-copy strong { font-size: 18px; letter-spacing: 0.08em; }
.brand-copy small { margin-top: 7px; color: var(--muted); font-size: 8px; font-weight: 700; letter-spacing: 0.2em; }

.site-header { position: fixed; z-index: 50; top: 0; width: 100%; transition: background 0.3s ease, box-shadow 0.3s ease; }
.site-header.is-scrolled { background: rgba(243, 241, 235, 0.9); box-shadow: 0 1px rgba(18, 19, 19, 0.08); backdrop-filter: blur(20px); }
.nav-shell { width: min(calc(100% - 48px), var(--max-width)); height: 88px; margin-inline: auto; display: flex; align-items: center; justify-content: space-between; }
.primary-nav { display: flex; align-items: center; gap: clamp(22px, 3vw, 44px); font-size: 14px; font-weight: 600; }
.primary-nav a { position: relative; }
.primary-nav > a:not(.nav-cta)::after { content: ""; position: absolute; right: 0; bottom: -8px; left: 0; height: 1px; background: var(--red); transform: scaleX(0); transform-origin: right; transition: transform 0.3s var(--ease); }
.primary-nav > a:hover::after, .primary-nav > a:focus-visible::after { transform: scaleX(1); transform-origin: left; }
.nav-cta { padding: 13px 17px; border: 1px solid var(--ink); border-radius: 999px; transition: 0.25s ease; }
.nav-cta:hover { color: var(--white); background: var(--ink); }
.nav-cta span { margin-left: 12px; color: var(--red); }
.menu-toggle { display: none; border: 0; background: transparent; width: 44px; height: 44px; padding: 12px 6px; cursor: pointer; }
.menu-toggle span { display: block; width: 30px; height: 1px; margin: 7px 0; background: var(--ink); transition: 0.25s ease; }

.hero { min-height: 780px; height: 100vh; max-height: 980px; position: relative; overflow: clip; display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(400px, 0.78fr); align-items: center; gap: clamp(30px, 4vw, 68px); padding-top: 100px; isolation: isolate; }
.hero-grid { position: absolute; inset: 0; z-index: -3; opacity: 0.34; background-image: linear-gradient(rgba(20, 20, 20, 0.055) 1px, transparent 1px), linear-gradient(90deg, rgba(20, 20, 20, 0.055) 1px, transparent 1px); background-size: 76px 76px; mask-image: linear-gradient(to bottom, black 10%, transparent 90%); }
.hero-orbit { position: absolute; z-index: -2; border: 1px solid rgba(214, 31, 50, 0.16); border-radius: 50%; pointer-events: none; }
.hero-orbit--one { width: 46vw; height: 46vw; max-width: 700px; max-height: 700px; right: -2%; top: 4%; }
.hero-orbit--two { width: 22vw; height: 22vw; right: 25%; bottom: 4%; border-color: rgba(18, 19, 19, 0.1); }
.eyebrow, .section-index { margin: 0 0 28px; color: var(--muted); font: 700 11px/1.2 Arial, sans-serif; letter-spacing: 0.2em; }
.eyebrow { display: flex; align-items: center; gap: 10px; }
.eyebrow span { width: 28px; height: 1px; background: var(--red); }
.hero h1 { margin: 0; font-size: clamp(50px, 4.65vw, 70px); line-height: 1.04; letter-spacing: -0.06em; font-weight: 850; }
.hero h1 .hero-title-line { display: block; width: max-content; max-width: 100%; color: var(--red); position: relative; }
.hero h1 .hero-title-line--ink { color: var(--ink); white-space: nowrap; }
.hero h1 .hero-title-line:not(.hero-title-line--ink)::after { content: ""; position: absolute; left: 1%; right: -2%; bottom: -9px; height: 8px; border: solid var(--red); border-width: 2px 0 0; border-radius: 50%; transform: rotate(-1deg); }
.hero-lead { max-width: 600px; margin: 38px 0 0; color: #4f514f; font-size: clamp(16px, 1.35vw, 19px); line-height: 1.9; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 42px; }
.hero-proof { display: flex; flex-wrap: wrap; gap: 10px 24px; margin-top: 28px; color: var(--muted); font-size: 12px; font-weight: 700; }
.hero-proof span { display: inline-flex; align-items: center; gap: 8px; }
.hero-proof b { color: var(--red); font: 700 9px/1 Arial, sans-serif; letter-spacing: 0.08em; }
.button { min-height: 52px; display: inline-flex; align-items: center; justify-content: center; gap: 30px; padding: 0 22px; border: 1px solid transparent; border-radius: 999px; cursor: pointer; font-size: 14px; font-weight: 700; transition: transform 0.25s var(--ease), background 0.25s ease, color 0.25s ease; }
.button:hover { transform: translateY(-2px); }
.button--primary { background: var(--red); color: white; }
.button--primary:hover { background: var(--red-dark); }
.button--ghost { border-color: var(--line); }
.button--ghost:hover { border-color: var(--ink); }
.button--light { color: var(--night); background: var(--white); }

.signal-panel { min-height: 510px; position: relative; overflow: hidden; color: var(--white); background: var(--night); border-radius: 36px; box-shadow: 0 35px 80px rgba(20, 20, 20, 0.2); }
.signal-panel::before { content: ""; position: absolute; inset: 0; opacity: 0.38; background-image: linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px); background-size: 42px 42px; }
.panel-topline { position: relative; z-index: 2; display: flex; justify-content: space-between; padding: 24px 26px; border-bottom: 1px solid rgba(255, 255, 255, 0.1); color: #8d918d; font: 700 9px/1 Arial, sans-serif; letter-spacing: 0.16em; }
.live-indicator { color: #e2e4e0; }
.live-indicator i { display: inline-block; width: 6px; height: 6px; margin-right: 6px; border-radius: 50%; background: #45d484; box-shadow: 0 0 0 5px rgba(69, 212, 132, 0.1); animation: pulse 2s infinite; }
.signal-visual { height: 356px; position: relative; display: grid; place-items: center; }
.signal-rings { width: 250px; height: 250px; position: relative; display: grid; place-items: center; border: 1px solid rgba(214, 31, 50, 0.32); border-radius: 50%; animation: slowSpin 22s linear infinite; }
.signal-rings > span { position: absolute; inset: 28px; border: 1px solid rgba(255, 255, 255, 0.1); border-radius: 50%; }
.signal-rings > span:nth-child(2) { inset: 58px; border-color: rgba(214, 31, 50, 0.3); }
.signal-rings > span:nth-child(3) { inset: -14px; border-style: dashed; border-color: rgba(255, 255, 255, 0.07); }
.signal-core { border-radius: 50%; background: white; transform: scale(1.8); animation: reverseSpin 22s linear infinite; }
.signal-line { position: absolute; height: 1px; background: linear-gradient(90deg, transparent, rgba(214, 31, 50, 0.8)); transform-origin: right; }
.signal-line::after { content: ""; position: absolute; right: -3px; top: -3px; width: 7px; height: 7px; border-radius: 50%; background: var(--red); box-shadow: 0 0 12px var(--red); }
.signal-line span { position: absolute; bottom: 9px; color: #929692; white-space: nowrap; font-size: 9px; letter-spacing: 0.1em; }
.signal-line--a { width: 100px; left: 17px; top: 100px; transform: rotate(12deg); }
.signal-line--b { width: 75px; right: 24px; top: 164px; transform: rotate(180deg); }
.signal-line--b span { transform: rotate(180deg); right: 0; }
.signal-line--c { width: 105px; left: 38px; bottom: 68px; transform: rotate(-13deg); }
.panel-data { position: absolute; z-index: 2; right: 0; bottom: 0; left: 0; display: grid; grid-template-columns: repeat(3, 1fr); padding: 20px 24px 22px; border-top: 1px solid rgba(255, 255, 255, 0.1); background: rgba(17, 19, 19, 0.7); }
.panel-data div { padding-left: 14px; border-left: 1px solid rgba(255, 255, 255, 0.1); }
.panel-data span, .panel-data strong { display: block; font: 700 8px/1.3 Arial, sans-serif; letter-spacing: 0.11em; }
.panel-data span { margin-bottom: 7px; color: #6c706c; }
.panel-data strong { color: #dfe1dc; }
.panel-data .status-ok { color: #45d484; }
.hero-foot { position: absolute; right: 0; bottom: 24px; left: 0; display: flex; align-items: center; justify-content: space-between; color: #777975; font: 700 9px/1 Arial, sans-serif; letter-spacing: 0.15em; }
.hero-scroll { display: flex; align-items: center; gap: 12px; }
.hero-scroll i { display: block; width: 42px; height: 1px; background: var(--ink); }

/* 首屏直接展示真实 App 首页，手机外框只承担产品展示与视觉聚焦。 */
.app-showcase { min-height: 610px; position: relative; display: grid; place-items: center; isolation: isolate; }
.app-showcase__halo { position: absolute; z-index: -2; width: 500px; height: 500px; border-radius: 50%; background: radial-gradient(circle, rgba(214, 31, 50, 0.18), rgba(214, 31, 50, 0.02) 56%, transparent 72%); }
.app-showcase::before, .app-showcase::after { content: ""; position: absolute; z-index: -1; border: 1px solid rgba(214, 31, 50, 0.22); border-radius: 50%; }
.app-showcase::before { width: 460px; height: 460px; }
.app-showcase::after { width: 350px; height: 350px; border-style: dashed; opacity: 0.55; animation: slowSpin 26s linear infinite; }
.phone-frame { width: min(270px, 72vw); overflow: hidden; padding: 7px; background: #171818; border: 1px solid rgba(255, 255, 255, 0.45); border-radius: 44px; box-shadow: 0 38px 80px rgba(27, 18, 18, 0.25), 0 0 0 10px rgba(255, 255, 255, 0.45); transform: rotate(1.5deg); transition: transform 0.5s var(--ease); }
.app-showcase:hover .phone-frame { transform: rotate(0) translateY(-5px); }
.phone-frame img { width: 100%; border-radius: 37px; }
.app-showcase__meta { position: absolute; z-index: 2; display: flex; align-items: center; color: var(--muted); font: 700 9px/1 Arial, sans-serif; letter-spacing: 0.15em; }
.app-showcase__meta--top { top: 40px; right: 3%; gap: 15px; }
.app-showcase__meta--top b { color: var(--red); }
.app-showcase__meta--bottom { left: 1%; bottom: 48px; gap: 11px; }
.app-showcase__meta--bottom i { width: 28px; height: 1px; background: var(--red); }

.statement { padding-block: 150px; border-top: 1px solid var(--line); }
.statement-layout { display: grid; grid-template-columns: 1.15fr 0.6fr; gap: 12vw; align-items: end; }
.statement h2, .section-heading h2, .capability-intro h2, .about-copy h2, .contact-card h2 { margin: 0; font-size: clamp(40px, 5vw, 72px); line-height: 1.15; letter-spacing: -0.055em; }
.statement h2 span, .capability-intro h2 span { color: var(--red); }
.statement-copy p { margin: 0 0 30px; color: var(--muted); font-size: 16px; line-height: 1.9; }
.text-link { display: inline-flex; align-items: center; gap: 34px; padding-bottom: 7px; border-bottom: 1px solid; background: none; font-size: 14px; font-weight: 700; }
.text-link span { color: var(--red); }

/*
 * 产品使用路径延续首页原有的大标题与网格语言，用清晰的四步关系替代泛化技术口号。
 * 列表在移动端自然折行，顺序仍保持从咨询到复盘，便于后续维护产品文案。
 */
.journey { padding-bottom: 120px; }
.journey-intro { margin-bottom: 72px; }
.journey-list { display: grid; grid-template-columns: repeat(4, 1fr); margin: 0; padding: 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); list-style: none; }
.journey-list li { min-height: 230px; padding: 28px 26px 30px; border-right: 1px solid var(--line); }
.journey-list li:last-child { border-right: 0; }
.journey-list b { display: block; margin-bottom: 62px; color: var(--red); font: 700 10px/1 Arial, sans-serif; letter-spacing: 0.1em; }
.journey-list span { display: block; margin-bottom: 14px; font-size: 22px; font-weight: 800; letter-spacing: -0.03em; }
.journey-list p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.8; }

.products { padding-block: 120px 160px; }
.section-heading { display: grid; grid-template-columns: 1fr 0.42fr; gap: 10vw; align-items: end; margin-bottom: 68px; }
.section-heading h2 { font-size: clamp(44px, 5.3vw, 76px); }
.section-heading h2 span, .section-heading--compact h2 span { color: var(--red); }
.section-heading > p { margin: 0; color: var(--muted); line-height: 1.9; }
.product-grid { display: grid; grid-template-columns: 1.17fr 0.83fr; gap: 18px; }
.product-card { min-height: 510px; position: relative; overflow: hidden; display: flex; flex-direction: column; justify-content: flex-end; padding: 30px; border: 1px solid var(--line); border-radius: var(--radius); background: rgba(255, 255, 255, 0.34); transition: transform 0.35s var(--ease), box-shadow 0.35s ease; }
.product-card:hover { transform: translateY(-6px); box-shadow: 0 25px 60px rgba(30, 30, 30, 0.09); }
.product-card--featured { grid-row: span 2; min-height: 958px; color: white; background: linear-gradient(145deg, #dc2035, #bd1327); border: 0; }
.product-card--featured::before { content: ""; position: absolute; width: 640px; height: 640px; top: -250px; right: -280px; border: 1px solid rgba(255, 255, 255, 0.18); border-radius: 50%; box-shadow: 0 0 0 70px rgba(255, 255, 255, 0.035), 0 0 0 140px rgba(255, 255, 255, 0.02); }
.card-number { position: absolute; z-index: 2; top: 28px; left: 30px; font: 700 10px/1 Arial, sans-serif; letter-spacing: 0.12em; }
.product-graphic { position: absolute; inset: 55px 30px 210px; }
/* 普通产品卡使用固定图形区，避免文案、标签和详情入口增加后与插图重叠。 */
.product-card:not(.product-card--featured) .product-graphic { inset: 62px 30px auto; height: 140px; }
.product-content { position: relative; z-index: 2; }
.product-content > span { display: block; margin-bottom: 14px; opacity: 0.58; font: 700 10px/1 Arial, sans-serif; letter-spacing: 0.18em; }
.product-content h3 { margin: 0 0 16px; font-size: clamp(28px, 3vw, 42px); letter-spacing: -0.04em; }
.product-content p { max-width: 560px; margin: 0; opacity: 0.74; font-size: 15px; line-height: 1.85; }
.product-points { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 22px; }
.product-points i { padding: 7px 10px; border: 1px solid var(--line); border-radius: 999px; color: var(--muted); font: normal 700 9px/1 Arial, sans-serif; letter-spacing: 0.05em; }
.product-card--featured .product-points i { color: rgba(255, 255, 255, 0.78); border-color: rgba(255, 255, 255, 0.25); }
.product-content a { display: inline-flex; align-items: center; gap: 20px; margin-top: 30px; padding-bottom: 6px; border-bottom: 1px solid rgba(255, 255, 255, 0.65); font-size: 13px; font-weight: 700; }
.product-card:not(.product-card--featured) .product-content a { border-bottom-color: var(--ink); }
.product-content a b { font-weight: 400; }
.product-graphic--ai { inset: 125px 44px 360px; display: grid; place-items: center; }
.ai-center, .ai-node { position: absolute; display: grid; place-items: center; border-radius: 50%; }
.ai-center { width: 150px; height: 150px; color: var(--red); background: white; font: 800 42px/1 Arial, sans-serif; box-shadow: 0 0 0 28px rgba(255, 255, 255, 0.08), 0 0 0 80px rgba(255, 255, 255, 0.04); }
.ai-node { width: 72px; height: 72px; border: 1px solid rgba(255, 255, 255, 0.5); background: rgba(255, 255, 255, 0.08); backdrop-filter: blur(10px); font-size: 12px; }
.ai-node::after { content: ""; position: absolute; width: 130px; height: 1px; background: rgba(255, 255, 255, 0.28); transform-origin: left; }
.ai-node--one { left: 2%; top: 10%; }
.ai-node--one::after { left: 72px; transform: rotate(24deg); }
.ai-node--two { right: 1%; top: 25%; }
.ai-node--two::after { right: 72px; transform: rotate(158deg); }
.ai-node--three { bottom: 2%; left: 16%; }
.ai-node--three::after { left: 65px; transform: rotate(-31deg); }
.product-graphic--market { border-bottom: 1px solid var(--line); }
.market-labels { display: flex; gap: 7px; }
.market-labels span { padding: 5px 8px; border: 1px solid var(--line); border-radius: 30px; color: var(--muted); font: 700 8px/1 Arial, sans-serif; letter-spacing: 0.08em; }
.market-chart { position: absolute; inset: 50px 0 20px; display: flex; align-items: end; gap: 10px; }
.market-chart i { flex: 1; height: 30%; background: var(--ink); opacity: 0.08; border-radius: 5px 5px 0 0; }
.market-chart i:nth-child(2) { height: 50%; }.market-chart i:nth-child(3) { height: 42%; }.market-chart i:nth-child(4) { height: 74%; background: var(--red); opacity: 0.85; }.market-chart i:nth-child(5) { height: 58%; }.market-chart i:nth-child(6) { height: 82%; background: var(--red); opacity: 0.55; }.market-chart i:nth-child(7) { height: 68%; }.market-chart i:nth-child(8) { height: 96%; background: var(--red); opacity: 0.9; }
.market-pulse { position: absolute; right: 0; top: 55px; width: 8px; height: 8px; border-radius: 50%; background: var(--red); box-shadow: 0 0 0 8px rgba(214, 31, 50, 0.12); }
.product-graphic--live { display: flex; gap: 16px; align-items: center; }
.live-screen { width: 66%; height: 85%; position: relative; display: grid; place-items: center; border-radius: 14px; background: var(--night); }
.live-screen span { width: 54px; height: 54px; border: 1px solid rgba(255, 255, 255, 0.3); border-radius: 50%; }
.live-screen span::after { content: ""; display: block; margin: 17px 0 0 21px; border: 9px solid transparent; border-left: 14px solid white; }
.live-screen b { position: absolute; top: 11px; left: 11px; padding: 5px 7px; color: white; background: var(--red); border-radius: 4px; font: 700 8px/1 Arial, sans-serif; letter-spacing: 0.1em; }
.live-comments { width: 34%; display: grid; gap: 11px; }
.live-comments i { height: 26px; display: flex; align-items: center; padding: 0 10px; border: 1px solid var(--line); border-radius: 8px; color: var(--muted); font: normal 700 9px/1 Arial, sans-serif; letter-spacing: 0.06em; white-space: nowrap; }
.live-comments i:nth-child(2) { width: 76%; }

/* 首页产品区以智能助手为主叙事，右侧三项能力共同组成完整使用体验。 */
.products .product-grid { grid-template-columns: minmax(0, 1.12fr) minmax(330px, 0.88fr); }
.products .product-card--featured { grid-row: span 3; min-height: 996px; justify-content: space-between; padding: 34px; }
.products .product-card--featured::before { opacity: 0.42; }
.products .product-card:not(.product-card--featured) { min-height: 320px; justify-content: flex-start; padding: 34px; }
.products .product-card:not(.product-card--featured) .product-content { display: flex; flex-direction: column; height: 100%; }
.products .product-card:not(.product-card--featured) .product-content h3 { font-size: clamp(30px, 2.6vw, 39px); }
.products .product-card:not(.product-card--featured) .product-content p { max-width: 460px; }
.products .product-card:not(.product-card--featured) .product-content a { align-self: flex-start; margin-top: auto; }
.agent-demo { position: relative; z-index: 2; margin-top: 72px; padding: 26px 0 32px; border-top: 1px solid rgba(255, 255, 255, 0.34); border-bottom: 1px solid rgba(255, 255, 255, 0.34); }
.agent-demo__status { display: flex; align-items: center; gap: 8px; margin-bottom: 36px; color: rgba(255, 255, 255, 0.78); font-size: 11px; font-weight: 700; }
.agent-demo__status span { width: 7px; height: 7px; border-radius: 50%; background: #67dfa1; box-shadow: 0 0 0 5px rgba(103, 223, 161, 0.12); }
.agent-demo__question { max-width: 82%; margin-left: auto; padding: 16px 18px; color: var(--ink); background: white; border-radius: 18px 18px 4px 18px; font-size: 14px; font-weight: 700; line-height: 1.65; }
.agent-demo__answer { margin-top: 16px; padding: 22px 0 0; }
.agent-demo__answer small { display: block; margin-bottom: 10px; color: rgba(255, 255, 255, 0.64); font-size: 10px; }
.agent-demo__answer p { max-width: 520px; margin: 0; color: white; font-size: 15px; line-height: 1.9; }
.agent-demo__answer div { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 20px; }
.agent-demo__answer i { padding: 7px 10px; border: 1px solid rgba(255, 255, 255, 0.28); border-radius: 999px; color: rgba(255, 255, 255, 0.78); font: normal 700 9px/1 Arial, sans-serif; }
.products .product-card--featured .product-content h3 { max-width: 600px; font-size: clamp(34px, 4vw, 55px); line-height: 1.12; }
.advantage-line, .live-note { display: flex; align-items: center; justify-content: space-between; gap: 18px; margin-top: 26px; padding-top: 18px; border-top: 1px solid var(--line); color: var(--muted); font-size: 11px; }
.advantage-line b { color: var(--red); font-size: 11px; }
.strategy-steps { display: flex; align-items: center; gap: 0; margin-top: 26px; color: var(--muted); font-size: 10px; font-weight: 700; }
.strategy-steps span { display: flex; align-items: center; }
.strategy-steps span:not(:last-child)::after { content: ""; width: 24px; height: 1px; margin: 0 10px; background: var(--red); opacity: 0.48; }
.live-note b { padding: 6px 8px; color: white; background: var(--red); border-radius: 5px; font: 700 9px/1 Arial, sans-serif; letter-spacing: 0.08em; }
.live-note + a { margin-top: 16px !important; }

.capabilities { color: var(--white); background: var(--night); padding-block: 150px; }
.capability-intro { display: grid; grid-template-columns: 0.25fr 1.05fr 0.58fr; gap: 5vw; align-items: start; margin-bottom: 110px; }
.section-index--light { color: #777b76; }
.capability-intro h2 { font-size: clamp(42px, 5vw, 70px); }
.capability-intro > p:last-child { margin: 12px 0 0; color: #989c97; line-height: 1.9; }
.capability-list { border-top: 1px solid rgba(255, 255, 255, 0.14); }
.capability-item { display: grid; grid-template-columns: 0.2fr 1fr auto; gap: 5vw; align-items: center; padding: 36px 0; border-bottom: 1px solid rgba(255, 255, 255, 0.14); }
.capability-number { color: var(--red); font: 700 10px/1 Arial, sans-serif; }
.capability-item h3 { margin: 0 0 9px; font-size: 28px; letter-spacing: -0.03em; }
.capability-item p { margin: 0; color: #8f938e; line-height: 1.8; }
.capability-tag { padding: 8px 12px; border: 1px solid rgba(255, 255, 255, 0.2); border-radius: 999px; color: #8f938e; font: 700 8px/1 Arial, sans-serif; letter-spacing: 0.14em; }

.scenarios { padding-block: 150px; }
.section-heading--compact { grid-template-columns: 1fr; }
.scenario-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.scenario-card { min-height: 380px; display: flex; flex-direction: column; padding: 25px; border: 1px solid var(--line); border-radius: var(--radius); }
.scenario-card > span { color: var(--muted); font: 700 10px/1 Arial, sans-serif; }
.scenario-icon { width: 72px; height: 72px; display: grid; place-items: center; margin: auto; border: 1px solid var(--line); border-radius: 50%; color: var(--red); font-size: 31px; transition: 0.3s ease; }
.scenario-icon img { width: 31px; height: 31px; object-fit: contain; transition: filter 0.3s ease, transform 0.3s ease; }
.scenario-card:hover .scenario-icon { color: white; background: var(--red); border-color: var(--red); transform: rotate(8deg); }
.scenario-card:hover .scenario-icon img { filter: brightness(0) invert(1); transform: rotate(-8deg) scale(1.04); }
.scenario-card h3 { margin: 0 0 13px; font-size: 25px; }
.scenario-card p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.8; }
.compliance-note { margin: 24px 0 0; color: #848681; font-size: 12px; text-align: right; }

.about { padding-bottom: 150px; }
.about-card { display: grid; grid-template-columns: 0.88fr 1.12fr; min-height: 600px; overflow: hidden; border: 1px solid var(--line); border-radius: 32px; background: #eae7df; }
.about-brand { display: grid; place-items: center; padding: 60px; background: white; }
.about-brand-signature { display: grid; justify-items: center; text-align: center; }
.about-brand-signature img { width: 112px; height: 112px; object-fit: contain; }
.about-brand-signature strong { margin-top: 34px; font-size: clamp(24px, 2.5vw, 36px); letter-spacing: 0.03em; }
.about-brand-signature small { max-width: 450px; margin-top: 13px; color: var(--muted); font: 700 9px/1.6 Arial, sans-serif; letter-spacing: 0.16em; }
.about-copy { padding: clamp(45px, 6vw, 90px); display: flex; flex-direction: column; justify-content: center; }
.about-copy h2 { font-size: clamp(38px, 4.3vw, 60px); }
.about-copy > p:not(.section-index) { margin: 34px 0; color: var(--muted); font-size: 16px; line-height: 1.9; }
.about-values { display: flex; flex-wrap: wrap; gap: 18px 26px; padding-top: 24px; border-top: 1px solid var(--line); }
.about-values span { font-size: 13px; font-weight: 700; }
.about-values b { margin-right: 7px; color: var(--red); font: 700 9px/1 Arial, sans-serif; }
.about-link { align-self: flex-start; margin-top: 34px; }

.contact { padding-bottom: 120px; }
.contact-card { min-height: 540px; position: relative; overflow: hidden; padding: clamp(40px, 7vw, 90px); color: white; background: var(--red); border-radius: 34px; }
.contact-card h2 { max-width: 780px; font-size: clamp(48px, 6.5vw, 90px); position: relative; z-index: 2; }
.contact-card > p:not(.section-index) { max-width: 580px; margin: 30px 0 36px; line-height: 1.8; opacity: 0.76; position: relative; z-index: 2; }
.contact-card .button { position: relative; z-index: 2; }
.contact-orbit { position: absolute; width: 620px; height: 620px; right: -80px; top: -40px; border: 1px solid rgba(255, 255, 255, 0.22); border-radius: 50%; }
.contact-orbit i { position: absolute; inset: 14%; border: 1px solid rgba(255, 255, 255, 0.16); border-radius: 50%; }
.contact-orbit i:nth-child(2) { inset: 29%; }.contact-orbit i:nth-child(3) { inset: 44%; background: rgba(255, 255, 255, 0.06); }

.site-footer { padding: 75px 0 28px; color: #dfe1dc; background: var(--night); }
.brand--footer .brand-copy small { color: #6f746e; }
.brand--footer .brand-mark { background: transparent; }
.footer-main { display: grid; grid-template-columns: auto 1fr auto; gap: clamp(45px, 7vw, 100px); align-items: start; padding-bottom: 70px; }
.footer-downloads { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 8px; padding-top: 1px; }
.footer-platform { min-width: 104px; display: inline-flex; align-items: center; gap: 9px; padding: 10px; color: #858a84; white-space: nowrap; border: 1px solid rgba(255, 255, 255, 0.1); border-radius: 14px; background: rgba(255, 255, 255, 0.03); transition: border-color 0.25s ease, background 0.25s ease, transform 0.25s var(--ease); }
.footer-platform:hover { transform: translateY(-2px); border-color: rgba(214, 31, 50, 0.55); background: rgba(255, 255, 255, 0.055); }
.platform-icon { width: 34px; height: 34px; display: grid; place-items: center; flex: 0 0 auto; border-radius: 10px; background: rgba(255, 255, 255, 0.07); }
.platform-icon img { width: 21px; height: 21px; object-fit: contain; }
.footer-platform > span:last-child { display: grid; gap: 4px; }
.footer-platform strong { color: #c6c9c4; font-size: 12px; font-weight: 600; }
.footer-platform small { color: #5f645e; font-size: 9px; }
.footer-links { display: flex; gap: 100px; }
.footer-links div { display: grid; gap: 15px; min-width: 100px; }
.footer-links span { margin-bottom: 5px; color: #666b65; font-size: 11px; }
.footer-links a { font-size: 13px; }
.footer-links a:hover { color: var(--red); }
.footer-bottom { display: flex; justify-content: space-between; padding-top: 24px; border-top: 1px solid rgba(255, 255, 255, 0.1); color: #686d67; font: 700 9px/1 Arial, sans-serif; letter-spacing: 0.12em; }
.footer-bottom a { color: inherit; transition: color 180ms ease; }
.footer-bottom a:hover { color: #f3f1eb; }

.inquiry-dialog { width: min(calc(100% - 32px), 620px); max-height: calc(100vh - 40px); padding: clamp(28px, 5vw, 54px); color: var(--ink); background: var(--paper); border: 0; border-radius: 28px; box-shadow: 0 30px 100px rgba(0, 0, 0, 0.38); }
.inquiry-dialog::backdrop { background: rgba(12, 13, 13, 0.72); backdrop-filter: blur(8px); }
.dialog-close { position: absolute; right: 18px; top: 14px; width: 42px; height: 42px; border: 0; background: transparent; font-size: 30px; cursor: pointer; }
.inquiry-dialog h2 { margin: 0 0 12px; font-size: 42px; }
.inquiry-dialog > p:not(.section-index) { color: var(--muted); line-height: 1.7; }
.inquiry-dialog form { display: grid; gap: 18px; margin-top: 28px; }
.inquiry-dialog label { display: grid; gap: 8px; font-size: 13px; font-weight: 700; }
.inquiry-dialog input, .inquiry-dialog select, .inquiry-dialog textarea { width: 100%; padding: 13px 14px; color: var(--ink); background: white; border: 1px solid var(--line); border-radius: 9px; outline: none; resize: vertical; }
.inquiry-dialog input:focus, .inquiry-dialog select:focus, .inquiry-dialog textarea:focus { border-color: var(--red); box-shadow: 0 0 0 3px rgba(214, 31, 50, 0.1); }
.inquiry-dialog form small { color: var(--muted); text-align: center; }
.inquiry-result { margin-top: 28px; }
.inquiry-result pre { max-height: 190px; overflow: auto; padding: 16px; background: white; border: 1px solid var(--line); border-radius: 12px; white-space: pre-wrap; font-family: inherit; line-height: 1.6; }

/* JS 启用后才应用入场动画，确保无脚本环境仍能完整阅读页面。 */
.js .reveal { opacity: 0; transform: translateY(28px); transition: opacity 0.75s var(--ease), transform 0.75s var(--ease); }
.js .reveal.is-visible { opacity: 1; transform: none; }

@keyframes pulse { 50% { box-shadow: 0 0 0 9px rgba(69, 212, 132, 0); } }
@keyframes slowSpin { to { transform: rotate(360deg); } }
@keyframes reverseSpin { from { transform: scale(1.8) rotate(0); } to { transform: scale(1.8) rotate(-360deg); } }

@media (max-width: 1024px) {
  .hero { grid-template-columns: 1.08fr 0.72fr; gap: 30px; }
  .hero h1 { font-size: clamp(50px, 6.5vw, 68px); }
  .app-showcase { min-height: 570px; }
  .journey-list { grid-template-columns: repeat(2, 1fr); }
  .journey-list li:nth-child(2) { border-right: 0; }
  .journey-list li:nth-child(-n + 2) { border-bottom: 1px solid var(--line); }
  .products .product-grid { grid-template-columns: 1fr 1fr; }
  .products .product-card--featured { min-height: 996px; }
  .capability-intro { grid-template-columns: 1fr 2fr; }
  .capability-intro > p:last-child { grid-column: 2; }
  .about-card { grid-template-columns: 0.75fr 1.25fr; }
}

@media (max-width: 760px) {
  .section-shell, .nav-shell { width: min(calc(100% - 30px), var(--max-width)); }
  .nav-shell { height: 72px; }
  .brand-copy strong { font-size: 16px; }
  .brand-copy small { display: none; }
  .brand-mark { transform: scale(0.9); }
  .menu-toggle { display: block; z-index: 3; }
  .menu-toggle.is-active span:first-child { transform: translateY(4px) rotate(45deg); }
  .menu-toggle.is-active span:last-child { transform: translateY(-4px) rotate(-45deg); }
  .primary-nav { position: fixed; inset: 0; display: flex; flex-direction: column; align-items: flex-start; justify-content: center; padding: 90px 28px; background: var(--paper); opacity: 0; visibility: hidden; transform: translateY(-16px); transition: 0.3s var(--ease); }
  .primary-nav.is-open { opacity: 1; visibility: visible; transform: none; }
  .primary-nav a { font-size: 26px; }
  .primary-nav .nav-cta { margin-top: 16px; font-size: 16px; }
  .hero { height: auto; min-height: 0; display: block; padding-top: 132px; padding-bottom: 100px; }
  .hero h1 { font-size: clamp(40px, 11vw, 52px); }
  .hero-lead { font-size: 16px; }
  .app-showcase { min-height: 610px; margin-top: 58px; }
  .app-showcase::before { width: 410px; height: 410px; }
  .app-showcase::after { width: 310px; height: 310px; }
  .app-showcase__meta--top { top: 0; right: 6%; }
  .app-showcase__meta--bottom { left: 3%; bottom: 10px; }
  .hero-foot { display: none; }
  .statement { padding-block: 100px; }
  .statement-layout, .section-heading, .about-card { grid-template-columns: 1fr; }
  .statement-layout { gap: 40px; }
  .journey-intro { margin-bottom: 48px; }
  .journey-list { grid-template-columns: 1fr; }
  .journey-list li { min-height: 0; padding: 26px 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .journey-list li:nth-child(3) { border-bottom: 1px solid var(--line); }
  .journey-list li:last-child { border-bottom: 0; }
  .journey-list b { margin-bottom: 28px; }
  .products, .scenarios { padding-block: 95px; }
  .section-heading { gap: 28px; margin-bottom: 46px; }
  .section-heading h2 { font-size: 38px; line-height: 1.14; }
  .products .product-grid { grid-template-columns: 1fr; }
  .products .product-card--featured { min-height: 780px; grid-row: auto; }
  .products .product-card:not(.product-card--featured) { min-height: 330px; }
  .agent-demo { margin-top: 54px; }
  .agent-demo__question { max-width: 92%; }
  .product-graphic--ai { inset: 90px 25px 255px; }
  .ai-center { width: 110px; height: 110px; font-size: 32px; }
  .ai-node { width: 60px; height: 60px; }
  .capabilities { padding-block: 100px; }
  .capability-intro { display: block; margin-bottom: 65px; }
  .capability-intro > p:last-child { margin-top: 30px; }
  .capability-item { grid-template-columns: 42px 1fr; gap: 15px; padding: 30px 0; }
  .capability-tag { display: none; }
  .scenario-grid { grid-template-columns: 1fr; }
  .scenario-card { min-height: 330px; }
  .about { padding-bottom: 95px; }
  .about-brand { min-height: 320px; padding: 34px; }
  .about-copy { padding: 40px 28px; }
  .contact { padding-bottom: 80px; }
  .contact-card { min-height: 560px; padding: 45px 28px; }
  .contact-orbit { width: 460px; height: 460px; right: -260px; bottom: -180px; top: auto; }
  .footer-main { display: grid; grid-template-columns: 1fr; gap: 60px; }
  .footer-downloads { justify-content: flex-start; flex-wrap: wrap; gap: 24px; }
  .footer-links { gap: 55px; }
  .footer-bottom { display: grid; gap: 12px; line-height: 1.5; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
}