/* ============================================================================
   简单维 · 企业站样式
   ----------------------------------------------------------------------------
   设计口径：深墨底 + 信号青，克制、偏仪器感；正文大量留白，字号阶梯只四级。
   不引外部字体 / 不引 CDN——境内网络首屏才稳。
   ========================================================================= */

:root {
  --ink: #0A1017;
  --ink-2: #101823;
  --ink-3: #16202C;
  --paper: #FFFFFF;
  --paper-2: #F6F8FA;
  --paper-3: #EEF2F6;
  --line: #E3E8EF;
  --line-dark: #22303F;
  --text: #111A23;
  --text-2: #3E4C5A;
  --muted: #6B7A8A;
  --teal: #0E9F94;
  --teal-b: #14B8A6;
  --teal-d: #0E7490;
  --amber: #D97706;
  --radius: 16px;
  --shadow-s: 0 1px 2px rgba(16, 24, 40, .05), 0 1px 3px rgba(16, 24, 40, .06);
  --shadow-m: 0 10px 30px -12px rgba(16, 24, 40, .18), 0 2px 8px rgba(16, 24, 40, .05);
  --shadow-l: 0 30px 60px -30px rgba(10, 16, 23, .45);
  --wrap: 1160px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
               "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", sans-serif;
  color: var(--text);
  background: var(--paper);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3 { margin: 0; line-height: 1.25; letter-spacing: -.01em; font-weight: 650; }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }
em { font-style: normal; }
img, svg { display: block; max-width: 100%; }

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }

/* 【为什么要 min-width:0】grid 子项默认 min-width:auto，内容里只要有一个
   不可收缩的最小宽度（比如示例表格的 min-width:460px），就会把整个轨道撑宽，
   页面出现横向滚动。统一关掉，让内部滚动容器自己兜底。 */
.biz-grid > *, .cap-grid > *, .deliver-grid > *, .who-grid > *,
.prod-grid > *, .duo > *, .about-grid > *, .contact-inner > *, .hero-inner > * { min-width: 0; }

/* ============================ 导航 ============================ */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 80;
  transition: background .25s ease, box-shadow .25s ease, border-color .25s ease;
  border-bottom: 1px solid transparent;
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }

.brand { display: flex; align-items: center; gap: 10px; }
.brand-mark { width: 30px; height: 30px; flex: none; }
.brand-text { display: flex; flex-direction: column; line-height: 1.05; }
.brand-text strong { font-size: 17px; letter-spacing: .08em; color: #fff; font-weight: 650; }
.brand-text em {
  font-size: 9px; letter-spacing: .26em; color: rgba(255, 255, 255, .5);
  margin-top: 3px; font-weight: 500;
}

.nav-links { display: flex; align-items: center; gap: 30px; }
.nav-links a {
  font-size: 14px; color: rgba(255, 255, 255, .72); position: relative;
  padding: 6px 0; transition: color .18s ease;
}
.nav-links a::after {
  content: ""; position: absolute; left: 0; right: 100%; bottom: 0; height: 2px;
  background: var(--teal-b); transition: right .22s ease;
}
.nav-links a:hover { color: #fff; }
.nav-links a:hover::after { right: 0; }

.nav-cta {
  padding: 8px 18px !important; border-radius: 999px;
  background: rgba(255, 255, 255, .1); color: #fff !important;
  border: 1px solid rgba(255, 255, 255, .22);
}
.nav-cta:hover { background: var(--teal-b); border-color: var(--teal-b); }
.nav-cta::after { display: none; }

/* 滚动后：白底深字 */
.nav.scrolled {
  background: rgba(255, 255, 255, .86);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom-color: var(--line);
  box-shadow: 0 6px 20px -16px rgba(16, 24, 40, .5);
}
.nav.scrolled .brand-text strong { color: var(--text); }
.nav.scrolled .brand-text em { color: var(--muted); }
.nav.scrolled .nav-links a { color: var(--text-2); }
.nav.scrolled .nav-links a:hover { color: var(--text); }
.nav.scrolled .nav-cta { background: var(--ink); color: #fff !important; border-color: var(--ink); }
.nav.scrolled .nav-cta:hover { background: var(--teal); border-color: var(--teal); }

.nav-toggle {
  display: none; width: 40px; height: 40px; border: 0; background: none; cursor: pointer;
  padding: 10px; flex-direction: column; justify-content: space-between;
}
.nav-toggle span { display: block; height: 2px; background: #fff; border-radius: 2px; transition: transform .2s ease, opacity .2s ease; }
.nav.scrolled .nav-toggle span { background: var(--text); }

/* ============================ 首屏 ============================ */
.hero {
  position: relative; background: var(--ink); color: #fff;
  padding: 130px 0 0; overflow: hidden;
}
.hero-glow {
  position: absolute; width: 900px; height: 900px; right: -260px; top: -420px;
  background: radial-gradient(circle, rgba(20, 184, 166, .30) 0%, rgba(14, 116, 144, .12) 42%, transparent 68%);
  filter: blur(10px); pointer-events: none;
}
.hero-grid {
  position: absolute; inset: 0; pointer-events: none;
  background-image: linear-gradient(rgba(255, 255, 255, .045) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255, 255, 255, .045) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 30%, #000 30%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 30%, #000 30%, transparent 78%);
}
.hero-inner {
  position: relative; display: grid; grid-template-columns: 1.06fr .94fr;
  gap: 56px; align-items: center; padding-bottom: 72px;
}

.eyebrow {
  display: inline-flex; align-items: center; gap: 9px;
  font-size: 13px; letter-spacing: .12em; color: rgba(255, 255, 255, .62);
  margin-bottom: 22px;
}
.eyebrow i {
  width: 6px; height: 6px; border-radius: 50%; background: var(--teal-b);
  box-shadow: 0 0 0 4px rgba(20, 184, 166, .16);
}

.hero h1 {
  font-size: clamp(30px, 4.2vw, 50px); font-weight: 680; letter-spacing: -.02em; line-height: 1.22;
}
.hero h1 em {
  background: linear-gradient(100deg, #2DD4BF, #7DD3FC);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.lede {
  margin-top: 24px; font-size: 16.5px; line-height: 1.85;
  color: rgba(255, 255, 255, .70); max-width: 520px;
}
.lede strong { color: rgba(255, 255, 255, .95); font-weight: 600; }

.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  height: 48px; padding: 0 26px; border-radius: 999px;
  font-size: 15px; font-weight: 600; cursor: pointer;
  transition: transform .16s ease, background .18s ease, box-shadow .18s ease, border-color .18s ease;
  border: 1px solid transparent;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--teal-b); color: #04211F; box-shadow: 0 12px 26px -14px rgba(20, 184, 166, .85); }
.btn-primary:hover { background: #2DD4BF; }
.btn-ghost { color: #fff; border-color: rgba(255, 255, 255, .26); background: rgba(255, 255, 255, .04); }
.btn-ghost:hover { background: rgba(255, 255, 255, .10); }

.hero-note { margin-top: 20px; font-size: 13px; color: rgba(255, 255, 255, .42); letter-spacing: .02em; }

/* 首屏右侧面板 */
.hero-visual { position: relative; }
.panel {
  position: relative; border-radius: 18px; padding: 18px 18px 12px;
  background: linear-gradient(180deg, rgba(255, 255, 255, .07), rgba(255, 255, 255, .03));
  border: 1px solid rgba(255, 255, 255, .10);
  box-shadow: var(--shadow-l);
  backdrop-filter: blur(6px);
}
.panel-head { display: flex; align-items: center; gap: 8px; margin-bottom: 6px; }
.panel-head .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--teal-b); box-shadow: 0 0 10px var(--teal-b); }
.panel-title { font-size: 12.5px; color: rgba(255, 255, 255, .62); }
.tag-mini {
  margin-left: auto; font-size: 10.5px; letter-spacing: .06em;
  padding: 2px 8px; border-radius: 999px;
  color: rgba(255, 255, 255, .55); border: 1px solid rgba(255, 255, 255, .18);
}
.chart { width: 100%; height: auto; }
.chart-line { stroke-dasharray: 1400; stroke-dashoffset: 1400; animation: draw 2.2s cubic-bezier(.4, 0, .2, 1) .35s forwards; }
.chart-area { opacity: 0; animation: fadein .9s ease 1.5s forwards; }
@keyframes draw { to { stroke-dashoffset: 0; } }
@keyframes fadein { to { opacity: 1; } }
.chart-axis text { font-family: inherit; }

.panel-foot {
  display: flex; flex-wrap: wrap; gap: 16px; padding: 10px 4px 4px;
  font-size: 11.5px; color: rgba(255, 255, 255, .45);
  border-top: 1px solid rgba(255, 255, 255, .07);
}
.panel-foot span { display: inline-flex; align-items: center; gap: 6px; }
.lg { width: 14px; height: 2px; display: inline-block; border-radius: 2px; }
.lg-line { background: var(--teal-b); }
.lg-dash { background: repeating-linear-gradient(90deg, #64748B 0 3px, transparent 3px 6px); }
.lg-dot { width: 7px; height: 7px; border-radius: 50%; background: #F59E0B; }

.float-card {
  position: absolute; left: -22px; bottom: 34px;
  display: flex; flex-direction: column; gap: 1px;
  padding: 14px 18px; border-radius: 14px;
  background: rgba(12, 20, 28, .92); border: 1px solid rgba(255, 255, 255, .12);
  box-shadow: var(--shadow-l);
}
.fc-label { font-size: 11px; color: rgba(255, 255, 255, .45); letter-spacing: .06em; }
.float-card strong { font-size: 26px; color: #FBBF24; line-height: 1.1; font-weight: 680; }
.fc-sub { font-size: 11px; color: rgba(255, 255, 255, .55); }

/* 首屏底部数据条 */
.strip {
  position: relative; display: grid; grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid rgba(255, 255, 255, .09);
}
.strip-item {
  display: flex; align-items: baseline; gap: 10px; padding: 22px 8px;
  border-right: 1px solid rgba(255, 255, 255, .07);
}
.strip-item:last-child { border-right: 0; }
.strip-item b { font-size: 20px; color: #fff; font-weight: 650; letter-spacing: -.01em; }
.strip-item span { font-size: 12.5px; color: rgba(255, 255, 255, .45); }

/* ============================ 通用区块 ============================ */
.sec { padding: 96px 0; }
.sec-soft { background: var(--paper-2); }
.sec-dark { background: var(--ink-2); color: #fff; }

.sec-head { max-width: 720px; margin-bottom: 52px; }
.sec-no {
  display: inline-block; font-size: 12px; letter-spacing: .2em; color: var(--teal);
  font-weight: 700; margin-bottom: 12px;
}
.sec-head h2 { font-size: clamp(24px, 2.8vw, 34px); }
.sec-head p { margin-top: 14px; font-size: 15.5px; color: var(--muted); line-height: 1.8; }
.sec-head-left { margin-bottom: 24px; }

.sec-dark .sec-no { color: var(--teal-b); }
.sec-dark .sec-head h2 { color: #fff; }
.sec-dark .sec-head p { color: rgba(255, 255, 255, .58); }

/* ============================ 业务体系 ============================ */
.biz-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.card {
  position: relative; padding: 32px 28px 28px; border-radius: var(--radius);
  background: var(--paper); border: 1px solid var(--line);
  box-shadow: var(--shadow-s); transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease;
}
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow-m); border-color: #D6DEE8; }
.card-core { background: linear-gradient(180deg, #F3FBF9, #FFFFFF 55%); border-color: #B9E6DF; }
.card-core:hover { border-color: #8ED9CD; }
.badge {
  position: absolute; top: 20px; right: 20px;
  font-size: 11px; font-weight: 600; letter-spacing: .05em;
  padding: 3px 10px; border-radius: 999px; color: #04211F; background: var(--teal-b);
}
.card-ico {
  width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center;
  background: var(--paper-3); color: var(--teal-d); margin-bottom: 20px;
}
.card-core .card-ico { background: rgba(20, 184, 166, .14); color: var(--teal); }
.card-ico svg { width: 22px; height: 22px; }
.card h3 { font-size: 19px; margin-bottom: 12px; }
.card > p { font-size: 14.5px; color: var(--text-2); line-height: 1.85; }

.ticks { margin-top: 20px; border-top: 1px dashed var(--line); padding-top: 16px; }
.ticks li {
  position: relative; padding-left: 20px; font-size: 13.5px; color: var(--muted);
  margin-bottom: 8px;
}
.ticks li::before {
  content: ""; position: absolute; left: 3px; top: 9px; width: 7px; height: 7px;
  border-radius: 2px; background: var(--teal); opacity: .55; transform: rotate(45deg);
}
.fine { margin-top: 16px; font-size: 12.5px; color: #94A3B8; line-height: 1.7; }

/* ============================ 核心能力 ============================ */
.cap-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 26px; }
.cap {
  padding: 36px 34px; border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(255, 255, 255, .055), rgba(255, 255, 255, .02));
  border: 1px solid var(--line-dark);
}
.cap-no { font-size: 12px; letter-spacing: .18em; color: var(--teal-b); font-weight: 600; margin-bottom: 14px; }
.cap h3 { font-size: 23px; color: #fff; margin-bottom: 14px; }
.cap-lede { font-size: 14.5px; color: rgba(255, 255, 255, .60); line-height: 1.85; }

.steps { margin-top: 26px; counter-reset: s; }
.steps li {
  position: relative; padding: 0 0 18px 34px; font-size: 14px; color: rgba(255, 255, 255, .72);
  border-left: 1px solid rgba(255, 255, 255, .12); margin-left: 11px;
}
.steps li:last-child { border-left-color: transparent; padding-bottom: 0; }
.steps li::before {
  counter-increment: s; content: counter(s);
  position: absolute; left: -11px; top: -2px; width: 22px; height: 22px; border-radius: 50%;
  background: var(--ink-3); border: 1px solid rgba(20, 184, 166, .45); color: var(--teal-b);
  font-size: 11px; font-weight: 600; display: grid; place-items: center;
}
.steps li b { color: #fff; font-weight: 600; margin-right: 8px; }
.cap-value {
  margin-top: 24px; padding-top: 18px; border-top: 1px solid rgba(255, 255, 255, .09);
  font-size: 13.5px; color: rgba(255, 255, 255, .52);
}

.cap-quote {
  margin-top: 26px; display: flex; align-items: center; justify-content: center; gap: 16px;
  padding: 30px; border-radius: var(--radius);
  background: radial-gradient(circle at 20% 20%, rgba(20, 184, 166, .16), transparent 60%);
  border: 1px solid var(--line-dark);
}
.cap-quote svg { width: 26px; height: 26px; color: var(--teal-b); flex: none; }
.cap-quote p { font-size: clamp(16px, 2vw, 21px); color: rgba(255, 255, 255, .88); letter-spacing: .01em; }
.cap-quote em { color: var(--teal-b); font-weight: 650; }

/* ============================ 软件工具 ============================ */
.prod-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.prod {
  position: relative; padding: 32px 30px 26px; border-radius: var(--radius);
  background: var(--paper); border: 1px solid var(--line); box-shadow: var(--shadow-s);
  transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease;
}
.prod:hover { transform: translateY(-3px); box-shadow: var(--shadow-m); border-color: #D6DEE8; }
.prod-role {
  display: inline-block; margin-bottom: 14px; padding: 3px 11px; border-radius: 999px;
  font-size: 11.5px; font-weight: 600; letter-spacing: .06em;
  color: #0B5F58; background: rgba(20, 184, 166, .13);
}
.prod-role-p { color: #8A4B0F; background: rgba(217, 119, 6, .12); }
.prod h3 { font-size: 20px; line-height: 1.5; }
.prod .ticks { margin-top: 22px; }
.prod .ticks li { margin-bottom: 11px; line-height: 1.75; }
.prod .ticks li b { color: var(--text); font-weight: 600; margin-right: 6px; }
.prod-foot {
  margin-top: 18px; padding-top: 16px; border-top: 1px dashed var(--line);
  font-size: 13px; color: var(--teal-d); line-height: 1.7;
}

.duo { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 22px; }
.duo-card { padding: 22px 24px; border-radius: 14px; background: var(--paper); border: 1px solid var(--line); }
.duo-card b { display: block; font-size: 14px; color: var(--text); margin-bottom: 7px; letter-spacing: .01em; }
.duo-card span { font-size: 13.5px; color: var(--muted); line-height: 1.8; }

.prod-compare {
  margin-top: 22px; padding: 28px 30px; border-radius: var(--radius);
  background: var(--paper); border: 1px solid var(--line); box-shadow: var(--shadow-s);
}
.prod-compare .dc-head { margin-bottom: 16px; }

/* ============================ 交付物 ============================ */
.deliver-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 24px; align-items: start; }
.deliver-card {
  padding: 30px 28px; border-radius: var(--radius);
  background: var(--paper); border: 1px solid var(--line); box-shadow: var(--shadow-s);
}
.dc-head { display: flex; align-items: center; gap: 12px; margin-bottom: 8px; }
.dc-head h3 { font-size: 19px; }
.tag-light {
  margin-left: 0; color: var(--muted); border-color: var(--line); background: var(--paper-2);
}
.dc-sub { font-size: 13.5px; color: var(--muted); margin-bottom: 20px; }

.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.demo-table { width: 100%; border-collapse: collapse; min-width: 460px; }
.demo-table th {
  text-align: left; font-size: 11.5px; letter-spacing: .06em; color: var(--muted);
  font-weight: 600; padding: 0 10px 10px; border-bottom: 1px solid var(--line); white-space: nowrap;
}
.demo-table td {
  font-size: 13px; color: var(--text-2); padding: 13px 10px; vertical-align: top;
  border-bottom: 1px dashed var(--line); line-height: 1.6;
}
.demo-table tr:last-child td { border-bottom: 0; }
.demo-table td:first-child { color: var(--text); font-weight: 550; white-space: nowrap; }
.td-strong { color: var(--amber) !important; font-weight: 600; }

.brief { border-top: 1px solid var(--line); }
.brief-row {
  display: flex; align-items: center; justify-content: space-between; gap: 14px;
  padding: 13px 2px; border-bottom: 1px dashed var(--line); font-size: 13.5px;
}
.brief-row span { color: var(--text-2); }
.brief-row b { color: var(--muted); font-weight: 500; font-size: 12.5px; text-align: right; }
.brief-row-hl { background: #FFFBF3; border-bottom: 0; border-radius: 8px; padding: 13px 12px; margin-top: 6px; }
.brief-row-hl span { color: var(--amber); font-weight: 600; }
.brief-row-hl b { color: #B45309; }

/* ============================ 合作流程 ============================ */
.flow { display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px; position: relative; }
.flow::before {
  content: ""; position: absolute; top: 21px; left: 40px; right: 40px; height: 1px;
  background: linear-gradient(90deg, var(--teal) 0%, #CBD5E1 55%, transparent 100%);
  opacity: .6;
}
.flow li { position: relative; padding-top: 0; }
.flow-no {
  display: grid; place-items: center; width: 42px; height: 42px; border-radius: 50%;
  background: var(--paper); border: 1px solid #C7D2DD; color: var(--teal);
  font-size: 14px; font-weight: 700; margin-bottom: 16px; position: relative; z-index: 1;
  box-shadow: 0 0 0 6px var(--paper-2);
}
.flow li:nth-child(1) .flow-no,
.flow li:nth-child(2) .flow-no { background: var(--teal); border-color: var(--teal); color: #fff; }
.flow h3 { font-size: 15.5px; margin-bottom: 8px; }
.flow p { font-size: 13px; color: var(--muted); line-height: 1.75; }

.billing {
  margin-top: 48px; display: flex; align-items: center; justify-content: space-between;
  gap: 28px; flex-wrap: wrap;
  padding: 30px 32px; border-radius: var(--radius);
  background: var(--paper); border: 1px solid var(--line); box-shadow: var(--shadow-s);
}
.billing-main { max-width: 640px; }
.billing h3 { font-size: 17px; margin-bottom: 8px; }
.billing p { font-size: 14px; color: var(--text-2); line-height: 1.8; }
.billing .btn-primary { box-shadow: 0 12px 26px -16px rgba(20, 184, 166, .9); }

/* ============================ 适合谁 ============================ */
.who-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.who {
  padding: 30px 28px; border-radius: var(--radius); background: var(--paper-2);
  border: 1px solid transparent; transition: background .2s ease, border-color .2s ease;
}
.who:hover { background: #fff; border-color: var(--line); }
.who h3 { font-size: 18px; margin-bottom: 10px; }
.who p { font-size: 14px; color: var(--text-2); line-height: 1.85; }
.who-tag {
  display: inline-block; margin-top: 18px; font-size: 11.5px; color: var(--teal-d);
  background: rgba(14, 159, 148, .10); padding: 4px 12px; border-radius: 999px;
}

/* ============================ 关于我们 ============================ */
.about-grid { display: grid; grid-template-columns: 1.25fr .75fr; gap: 48px; align-items: start; }
.about-p { font-size: 15px; color: var(--text-2); line-height: 1.95; margin-bottom: 16px; }

.facts { margin-top: 28px; border-top: 1px solid var(--line); }
.facts > div {
  display: flex; gap: 16px; padding: 12px 0; border-bottom: 1px solid var(--line);
  font-size: 13.5px;
}
.facts span { color: var(--muted); width: 84px; flex: none; }
.facts b { color: var(--text); font-weight: 550; }

.compliance {
  padding: 30px 28px; border-radius: var(--radius); background: var(--paper);
  border: 1px solid var(--line); box-shadow: var(--shadow-s);
}
.compliance h3 { font-size: 16px; margin-bottom: 18px; }
.compliance li {
  font-size: 13px; color: var(--muted); line-height: 1.8; padding: 12px 0;
  border-bottom: 1px dashed var(--line);
}
.compliance li:last-child { border-bottom: 0; padding-bottom: 0; }
.compliance b { display: block; color: var(--text); font-weight: 600; font-size: 13.5px; margin-bottom: 2px; }

/* ============================ 联系 ============================ */
.contact { background: var(--ink); color: #fff; padding: 96px 0; }
.contact-inner { display: grid; grid-template-columns: 1.1fr .9fr; gap: 40px; align-items: center; }
.contact-copy h2 { font-size: clamp(24px, 3vw, 34px); margin-bottom: 18px; }
.contact-copy > p { font-size: 15px; color: rgba(255, 255, 255, .62); line-height: 1.9; max-width: 520px; }

.contact-lines { margin-top: 30px; border-top: 1px solid rgba(255, 255, 255, .1); }
.cline {
  display: flex; align-items: baseline; gap: 18px; padding: 13px 0;
  border-bottom: 1px solid rgba(255, 255, 255, .07); font-size: 14px;
}
.cline span { color: rgba(255, 255, 255, .42); width: 92px; flex: none; font-size: 13px; }
.cline b { color: #fff; font-weight: 550; letter-spacing: .01em; }
.cline b.ph { color: rgba(255, 255, 255, .35); font-weight: 400; font-style: normal; }
.contact-note { margin-top: 18px; font-size: 12.5px; color: rgba(255, 255, 255, .35); }

.contact-card {
  padding: 34px 32px; border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(255, 255, 255, .07), rgba(255, 255, 255, .025));
  border: 1px solid rgba(255, 255, 255, .12);
}
.contact-card h3 { font-size: 17px; margin-bottom: 22px; }
.contact-card li {
  display: flex; align-items: flex-start; gap: 14px; font-size: 14px;
  color: rgba(255, 255, 255, .78); padding: 12px 0; line-height: 1.7;
}
.contact-card li span {
  flex: none; width: 22px; height: 22px; border-radius: 50%; display: grid; place-items: center;
  background: rgba(20, 184, 166, .18); color: var(--teal-b); font-size: 11px; font-weight: 700;
  margin-top: 2px;
}
.contact-card-note {
  margin-top: 18px; padding-top: 16px; border-top: 1px solid rgba(255, 255, 255, .09);
  font-size: 12.5px; color: rgba(255, 255, 255, .4);
}

/* ============================ 页脚 ============================ */
.foot { background: #060B10; color: rgba(255, 255, 255, .4); padding: 30px 0; }
.foot-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.foot-brand { display: flex; align-items: baseline; gap: 12px; }
.foot-brand strong { color: rgba(255, 255, 255, .8); font-size: 15px; letter-spacing: .08em; }
.foot-brand span { font-size: 12px; }
.foot-meta { display: flex; align-items: center; gap: 18px; font-size: 12px; flex-wrap: wrap; }
.foot-meta a:hover { color: rgba(255, 255, 255, .75); text-decoration: underline; }

/* ============================ 滚动进场 ============================ */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s cubic-bezier(.22, .8, .3, 1); }
.reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .chart-line { stroke-dasharray: none; stroke-dashoffset: 0; animation: none; }
  .chart-area { opacity: 1; animation: none; }
}

/* ============================ 响应式 ============================ */
@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; gap: 44px; }
  .hero-visual { max-width: 620px; }
  .float-card { left: auto; right: 12px; bottom: -14px; }
  .biz-grid { grid-template-columns: 1fr 1fr; }
  .card-core { grid-column: span 2; order: -1; }
  .deliver-grid { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr; gap: 32px; }
  .contact-inner { grid-template-columns: 1fr; }
  .flow { grid-template-columns: repeat(3, 1fr); row-gap: 32px; }
  .flow::before { display: none; }
  .flow-no { box-shadow: none; }
}

@media (max-width: 760px) {
  .wrap { padding: 0 18px; }
  .sec { padding: 68px 0; }
  .hero { padding-top: 104px; }
  .hero-inner { padding-bottom: 48px; }

  .nav-toggle { display: flex; }
  .nav-links {
    position: absolute; top: 68px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: rgba(10, 16, 23, .97); padding: 8px 18px 18px;
    border-bottom: 1px solid rgba(255, 255, 255, .08);
    transform: translateY(-8px); opacity: 0; pointer-events: none;
    transition: opacity .2s ease, transform .2s ease;
  }
  .nav.open .nav-links { opacity: 1; transform: none; pointer-events: auto; }
  .nav-links a { padding: 13px 0; border-bottom: 1px solid rgba(255, 255, 255, .06); color: rgba(255, 255, 255, .8); }
  .nav-links a::after { display: none; }
  .nav-cta { margin-top: 12px; text-align: center; border-bottom: 0 !important; }
  .nav.scrolled .nav-links { background: rgba(255, 255, 255, .98); }
  .nav.scrolled .nav-links a { border-bottom-color: var(--line); }

  .strip { grid-template-columns: 1fr 1fr; }
  .strip-item:nth-child(2n) { border-right: 0; }
  .strip-item:nth-child(-n+2) { border-bottom: 1px solid rgba(255, 255, 255, .07); }
  .strip-item { padding: 18px 6px; flex-direction: column; align-items: flex-start; gap: 2px; }

  .biz-grid, .cap-grid, .who-grid, .flow, .prod-grid, .duo { grid-template-columns: 1fr; }
  .card-core { grid-column: auto; }
  .flow li { display: grid; grid-template-columns: 42px 1fr; column-gap: 16px; align-items: start; }
  .flow-no { margin-bottom: 0; width: 36px; height: 36px; font-size: 13px; }
  .flow h3 { grid-column: 2; }
  .flow p { grid-column: 2; }

  .billing { flex-direction: column; align-items: flex-start; padding: 24px 22px; }
  .billing .btn { width: 100%; }
  .cap { padding: 28px 22px; }
  .deliver-card, .card, .compliance, .contact-card, .prod, .prod-compare { padding: 24px 22px; }
  .contact { padding: 68px 0; }
  .hero-actions .btn { width: 100%; }
  .foot-inner { flex-direction: column; align-items: flex-start; gap: 10px; }
}

@media (max-width: 420px) {
  .brand-text em { display: none; }
  .hero h1 { font-size: 27px; }
  .float-card { display: none; }
}