/* ============================================================
   山西鑫新康科技有限公司官网 · 赛博朋克霓虹主题
   xsite.css —— 全站样式（首页 / 业务页 / 案例 / FAQ / 关于 / 联系）
   ============================================================ */

:root {
    --bg: #04060d;
    --bg-2: #070b16;
    --panel: #0a1020;
    --panel-2: #0d1526;
    --line: rgba(0, 229, 255, 0.14);
    --line-strong: rgba(0, 229, 255, 0.35);
    --cyan: #00e5ff;
    --cyan-deep: #00b8d4;
    --violet: #8b5cf6;
    --purple: #a855f7;
    --pink: #ff2d78;
    --txt: #d8e2f2;
    --muted: #8494ad;
    --dim: #5a6a85;
    --glow-cyan: 0 0 18px rgba(0, 229, 255, 0.35);
    --glow-violet: 0 0 22px rgba(139, 92, 246, 0.4);
    --font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
    --mono: "JetBrains Mono", "Fira Code", "Cascadia Code", Consolas, "Courier New", monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    font-family: var(--font);
    background-color: var(--bg);
    color: var(--txt);
    font-size: 16px;
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
    /* 全局网格底纹 + 顶部光晕 */
    background-image:
        radial-gradient(1100px 460px at 82% -8%, rgba(139, 92, 246, 0.13), transparent 62%),
        radial-gradient(900px 420px at 12% -6%, rgba(0, 229, 255, 0.10), transparent 60%),
        linear-gradient(rgba(0, 229, 255, 0.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 229, 255, 0.035) 1px, transparent 1px);
    background-size: auto, auto, 46px 46px, 46px 46px;
    background-attachment: fixed;
}

/* 扫描线氛围层 */
body::before {
    content: "";
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    background: repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.018) 0 1px, transparent 1px 4px);
    mix-blend-mode: overlay;
}

::selection { background: rgba(0, 229, 255, 0.28); color: #fff; }

a { color: var(--cyan); text-decoration: none; transition: color .25s, text-shadow .25s; }
a:hover { color: #6ef; }

img { max-width: 100%; display: block; }

ul, ol { list-style: none; }

/* 滚动条 */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg-2); }
::-webkit-scrollbar-thumb { background: linear-gradient(180deg, var(--cyan-deep), var(--violet)); border-radius: 6px; }

/* ---------------- 布局工具 ---------------- */
.container { width: min(1200px, 92%); margin: 0 auto; position: relative; z-index: 1; }

.section { padding: 92px 0; position: relative; }
.section + .section { padding-top: 30px; }

.section-head { text-align: center; max-width: 760px; margin: 0 auto 54px; }
.eyebrow {
    font-family: var(--mono);
    font-size: 13px;
    letter-spacing: 3px;
    color: var(--cyan);
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 14px;
    text-shadow: var(--glow-cyan);
}
.eyebrow::before, .eyebrow::after {
    content: "";
    width: 34px; height: 1px;
    background: linear-gradient(90deg, transparent, var(--cyan));
}
.eyebrow::after { background: linear-gradient(90deg, var(--cyan), transparent); }

.section-head h2 {
    font-size: clamp(26px, 3.6vw, 38px);
    font-weight: 700;
    line-height: 1.3;
    letter-spacing: 1px;
    background: linear-gradient(120deg, #f2f6ff 30%, var(--cyan) 78%, var(--purple));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}
.section-head p { color: var(--muted); margin-top: 14px; font-size: 15.5px; }

.mono { font-family: var(--mono); }

/* ---------------- 按钮 ---------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 13px 30px;
    font-size: 15px;
    font-weight: 600;
    letter-spacing: 1px;
    border-radius: 4px;
    border: 1px solid transparent;
    cursor: pointer;
    transition: all .28s ease;
    font-family: var(--font);
}
.btn-primary {
    background: linear-gradient(115deg, var(--cyan) 0%, var(--violet) 100%);
    color: #04121a;
    box-shadow: 0 0 22px rgba(0, 229, 255, 0.35), inset 0 0 0 1px rgba(255, 255, 255, 0.22);
}
.btn-primary:hover {
    color: #04121a;
    transform: translateY(-3px);
    box-shadow: 0 0 34px rgba(0, 229, 255, 0.6), 0 0 60px rgba(139, 92, 246, 0.35);
}
.btn-ghost {
    background: rgba(0, 229, 255, 0.04);
    color: var(--cyan);
    border-color: var(--line-strong);
    box-shadow: inset 0 0 18px rgba(0, 229, 255, 0.06);
}
.btn-ghost:hover {
    color: #fff;
    border-color: var(--cyan);
    transform: translateY(-3px);
    box-shadow: var(--glow-cyan), inset 0 0 24px rgba(0, 229, 255, 0.14);
}
.btn-sm { padding: 9px 20px; font-size: 13.5px; }

/* ---------------- 顶部导航 ---------------- */
.site-header {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    background: rgba(4, 6, 13, 0.55);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--line);
    transition: background .3s, box-shadow .3s;
}
.site-header.scrolled {
    background: rgba(4, 6, 13, 0.88);
    box-shadow: 0 6px 30px rgba(0, 0, 0, 0.5), 0 1px 0 rgba(0, 229, 255, 0.12);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }

.brand { display: flex; align-items: center; gap: 11px; }
.brand svg { width: 34px; height: 34px; filter: drop-shadow(0 0 8px rgba(0, 229, 255, 0.55)); }
.brand-name {
    font-size: 18px;
    font-weight: 700;
    letter-spacing: 2px;
    color: #fff;
    line-height: 1.15;
}
.brand-name small {
    display: block;
    font-family: var(--mono);
    font-size: 9.5px;
    font-weight: 400;
    letter-spacing: 2.2px;
    color: var(--cyan);
    opacity: .85;
}

.main-nav { display: flex; align-items: center; gap: 4px; }
.main-nav > li { position: relative; }
.main-nav > li > a {
    display: block;
    padding: 10px 16px;
    color: var(--txt);
    font-size: 15px;
    letter-spacing: 1px;
    position: relative;
}
.main-nav > li > a::after {
    content: "";
    position: absolute;
    left: 16px; right: 16px; bottom: 4px;
    height: 2px;
    background: linear-gradient(90deg, var(--cyan), var(--purple));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform .28s;
    box-shadow: var(--glow-cyan);
}
.main-nav > li > a:hover, .main-nav > li > a.active { color: var(--cyan); }
.main-nav > li > a:hover::after, .main-nav > li > a.active::after { transform: scaleX(1); }

.nav-drop {
    position: absolute;
    top: calc(100% + 10px);
    left: 50%;
    transform: translateX(-50%) translateY(8px);
    min-width: 210px;
    background: rgba(9, 13, 25, 0.97);
    border: 1px solid var(--line-strong);
    border-radius: 6px;
    padding: 8px;
    opacity: 0;
    visibility: hidden;
    transition: all .25s ease;
    box-shadow: 0 18px 50px rgba(0, 0, 0, 0.6), var(--glow-cyan);
    backdrop-filter: blur(12px);
}
.main-nav li:hover .nav-drop, .main-nav li:focus-within .nav-drop { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }
.nav-drop::before {
    content: "";
    position: absolute;
    top: -6px; left: 0; right: 0;
    height: 6px;
}
.nav-drop a {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 9px 13px;
    border-radius: 4px;
    color: var(--txt);
    font-size: 14px;
    white-space: nowrap;
}
.nav-drop a i { font-style: normal; font-family: var(--mono); font-size: 11px; color: var(--cyan); }
.nav-drop a:hover { background: rgba(0, 229, 255, 0.09); color: var(--cyan); }

.header-cta { display: flex; align-items: center; gap: 14px; }
.header-phone {
    font-family: var(--mono);
    font-size: 14.5px;
    color: var(--cyan);
    letter-spacing: 1px;
    display: flex;
    align-items: center;
    gap: 7px;
    text-shadow: 0 0 12px rgba(0, 229, 255, 0.4);
}
.header-phone svg { width: 16px; height: 16px; }
.header-phone:hover { color: #fff; }

.burger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 42px; height: 42px;
    background: rgba(0, 229, 255, 0.05);
    border: 1px solid var(--line-strong);
    border-radius: 4px;
    cursor: pointer;
    align-items: center;
}
.burger span {
    display: block;
    width: 20px; height: 2px;
    background: var(--cyan);
    box-shadow: 0 0 8px rgba(0, 229, 255, 0.6);
    transition: all .3s;
}
.burger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.burger.open span:nth-child(2) { opacity: 0; }
.burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.m-nav {
    display: none;
    background: rgba(5, 8, 16, 0.98);
    border-top: 1px solid var(--line);
    padding: 14px 4%;
    max-height: 70vh;
    overflow-y: auto;
}
.m-nav.open { display: block; }
.m-nav > li { border-bottom: 1px dashed rgba(132, 148, 173, 0.15); }
.m-nav > li > a, .m-nav > li > button.m-group {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 13px 6px;
    color: var(--txt);
    font-size: 15.5px;
    background: none;
    border: none;
    font-family: var(--font);
    letter-spacing: 1px;
    cursor: pointer;
}
.m-nav .m-sub { display: none; padding: 2px 0 10px 16px; }
.m-nav .m-sub.show { display: block; }
.m-nav .m-sub a { display: block; padding: 7px 6px; color: var(--muted); font-size: 14px; }
.m-nav .m-sub a:hover { color: var(--cyan); }
.m-nav > li > a.active { color: var(--cyan); }

/* ---------------- 首页 Hero ---------------- */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 150px 0 90px;
    overflow: hidden;
}
.hero-bg { position: absolute; inset: 0; z-index: 0; }
.hero-bg img { width: 100%; height: 100%; object-fit: cover; opacity: .38; }
.hero-bg::after {
    content: "";
    position: absolute; inset: 0;
    background:
        linear-gradient(180deg, rgba(4, 6, 13, 0.72) 0%, rgba(4, 6, 13, 0.42) 45%, var(--bg) 96%),
        radial-gradient(800px 400px at 24% 40%, rgba(0, 229, 255, 0.10), transparent 65%);
}
.hero-inner { position: relative; z-index: 2; }

.hero-eyebrow {
    font-family: var(--mono);
    color: var(--cyan);
    font-size: 14px;
    letter-spacing: 4px;
    margin-bottom: 22px;
    display: inline-block;
    padding: 7px 16px;
    border: 1px solid var(--line-strong);
    background: rgba(0, 229, 255, 0.05);
    text-shadow: var(--glow-cyan);
    animation: pulse-border 3.2s infinite;
}
@keyframes pulse-border {
    0%, 100% { box-shadow: 0 0 12px rgba(0, 229, 255, 0.15); }
    50% { box-shadow: 0 0 26px rgba(0, 229, 255, 0.4); }
}

.hero h1 {
    font-size: clamp(34px, 6vw, 64px);
    font-weight: 800;
    line-height: 1.22;
    letter-spacing: 2px;
    color: #fff;
    position: relative;
    max-width: 22ch;
}
/* 故障抖动效果 */
.glitch { position: relative; display: inline-block; }
.glitch::before, .glitch::after {
    content: attr(data-text);
    position: absolute;
    left: 0; top: 0;
    width: 100%;
    overflow: hidden;
    clip-path: inset(0 0 0 0);
    opacity: 0;
}
.glitch::before { color: var(--cyan); animation: glitch-a 4.2s infinite steps(1); z-index: -1; }
.glitch::after { color: var(--pink); animation: glitch-b 4.2s infinite steps(1); z-index: -2; }
@keyframes glitch-a {
    0%, 91%, 96%, 100% { opacity: 0; transform: none; clip-path: inset(0 0 0 0); }
    92% { opacity: .8; transform: translate(-4px, 2px); clip-path: inset(12% 0 58% 0); }
    94% { opacity: .8; transform: translate(3px, -1px); clip-path: inset(62% 0 8% 0); }
}
@keyframes glitch-b {
    0%, 91%, 96%, 100% { opacity: 0; transform: none; clip-path: inset(0 0 0 0); }
    93% { opacity: .8; transform: translate(4px, -2px); clip-path: inset(38% 0 42% 0); }
    95% { opacity: .8; transform: translate(-3px, 1px); clip-path: inset(80% 0 4% 0); }
}

.hero-sub {
    margin: 26px 0 38px;
    max-width: 620px;
    color: var(--muted);
    font-size: 16.5px;
    line-height: 2;
}
.hero-sub strong { color: var(--txt); font-weight: 600; }
.hero-sub .type {
    font-family: var(--mono);
    color: var(--cyan);
    text-shadow: var(--glow-cyan);
    border-bottom: 2px solid rgba(0, 229, 255, 0.4);
    padding: 0 2px;
}
.cursor-blink::after { content: "_"; animation: blink 1s steps(1) infinite; color: var(--cyan); }
@keyframes blink { 50% { opacity: 0; } }

.hero-cta { display: flex; flex-wrap: wrap; gap: 18px; }

.hero-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1px;
    margin-top: 74px;
    background: var(--line);
    border: 1px solid var(--line);
    border-radius: 6px;
    overflow: hidden;
}
.hero-stats .stat {
    background: rgba(7, 11, 22, 0.82);
    padding: 22px 12px;
    text-align: center;
    transition: background .3s;
}
.hero-stats .stat:hover { background: rgba(0, 229, 255, 0.05); }
.stat b {
    display: block;
    font-family: var(--mono);
    font-size: clamp(24px, 3vw, 34px);
    font-weight: 700;
    background: linear-gradient(120deg, var(--cyan), var(--purple));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1.2;
}
.stat span { font-size: 13.5px; color: var(--muted); letter-spacing: 1px; }

/* 首页滚动提示 */
.hero-scroll {
    position: absolute;
    left: 50%; bottom: 26px;
    transform: translateX(-50%);
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 3px;
    color: var(--dim);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    z-index: 2;
}
.hero-scroll::after {
    content: "";
    width: 1px; height: 34px;
    background: linear-gradient(180deg, var(--cyan), transparent);
    animation: scroll-hint 1.8s ease infinite;
}
@keyframes scroll-hint {
    0% { transform: scaleY(0); transform-origin: top; }
    50% { transform: scaleY(1); transform-origin: top; }
    51% { transform: scaleY(1); transform-origin: bottom; }
    100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ---------------- 霓虹卡片 ---------------- */
.neon-card {
    position: relative;
    background: linear-gradient(160deg, rgba(13, 21, 38, 0.85), rgba(8, 12, 24, 0.9));
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 30px 26px;
    transition: transform .3s ease, border-color .3s, box-shadow .3s;
    overflow: hidden;
}
.neon-card::before {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(420px 180px at 50% -20%, rgba(0, 229, 255, 0.12), transparent 70%);
    opacity: 0;
    transition: opacity .35s;
}
.neon-card:hover {
    transform: translateY(-7px);
    border-color: var(--line-strong);
    box-shadow: 0 18px 44px rgba(0, 0, 0, 0.5), var(--glow-cyan);
}
.neon-card:hover::before { opacity: 1; }
/* 赛博边角 */
.neon-card .corner, .corner { position: absolute; width: 14px; height: 14px; pointer-events: none; }
.corner.tl { top: -1px; left: -1px; border-top: 2px solid var(--cyan); border-left: 2px solid var(--cyan); }
.corner.tr { top: -1px; right: -1px; border-top: 2px solid var(--cyan); border-right: 2px solid var(--cyan); }
.corner.bl { bottom: -1px; left: -1px; border-bottom: 2px solid var(--cyan); border-left: 2px solid var(--cyan); }
.corner.br { bottom: -1px; right: -1px; border-bottom: 2px solid var(--cyan); border-right: 2px solid var(--cyan); }

/* 业务卡片（首页 6 宫格） */
.biz-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.biz-card .biz-icon {
    width: 58px; height: 58px;
    display: flex; align-items: center; justify-content: center;
    border-radius: 8px;
    background: rgba(0, 229, 255, 0.06);
    border: 1px solid var(--line-strong);
    margin-bottom: 20px;
    box-shadow: inset 0 0 16px rgba(0, 229, 255, 0.08);
    transition: all .3s;
}
.biz-card .biz-icon svg { width: 30px; height: 30px; }
.biz-card:hover .biz-icon { box-shadow: var(--glow-cyan), inset 0 0 20px rgba(0, 229, 255, 0.18); }
.biz-card h3 { font-size: 19px; color: #fff; letter-spacing: 1px; margin-bottom: 6px; }
.biz-card .biz-en { font-family: var(--mono); font-size: 10.5px; color: var(--dim); letter-spacing: 2px; display: block; margin-bottom: 13px; }
.biz-card p { color: var(--muted); font-size: 14px; line-height: 1.85; margin-bottom: 16px; }
.biz-card .biz-tags { display: flex; flex-wrap: wrap; gap: 7px; }
.tag {
    font-size: 12px;
    color: var(--cyan);
    border: 1px solid rgba(0, 229, 255, 0.22);
    background: rgba(0, 229, 255, 0.04);
    padding: 2.5px 10px;
    border-radius: 3px;
    letter-spacing: .5px;
    transition: all .25s;
    cursor: default;
}
a.tag:hover, .tag:hover {
    color: #fff;
    border-color: var(--cyan);
    box-shadow: var(--glow-cyan);
    background: rgba(0, 229, 255, 0.12);
}
.biz-card .more {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 16px;
    font-size: 13.5px;
    color: var(--violet);
    letter-spacing: 1px;
    font-family: var(--mono);
}
.biz-card .more:hover { color: var(--cyan); text-shadow: var(--glow-cyan); }

/* ---------------- 行业方案 chips ---------------- */
.sol-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.sol-chip {
    position: relative;
    text-align: center;
    padding: 26px 14px;
    background: linear-gradient(165deg, rgba(13, 21, 38, 0.7), rgba(8, 12, 24, 0.9));
    border: 1px solid var(--line);
    border-radius: 6px;
    transition: all .3s;
    overflow: hidden;
}
.sol-chip .idx { font-family: var(--mono); font-size: 11px; color: var(--dim); letter-spacing: 2px; display: block; margin-bottom: 8px; }
.sol-chip b { font-size: 17px; font-weight: 600; color: var(--txt); letter-spacing: 2px; transition: all .3s; }
.sol-chip em { display: block; font-style: normal; font-size: 12px; color: var(--dim); margin-top: 5px; letter-spacing: 1px; }
.sol-chip:hover {
    border-color: var(--line-strong);
    transform: translateY(-5px);
    box-shadow: 0 14px 34px rgba(0, 0, 0, 0.45), var(--glow-cyan);
}
.sol-chip:hover b {
    background: linear-gradient(120deg, var(--cyan), var(--purple));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* ---------------- 技术跑马灯 ---------------- */
.marquee-wrap {
    overflow: hidden;
    position: relative;
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    background: rgba(7, 11, 22, 0.6);
    padding: 20px 0;
    margin: 20px 0 0;
}
.marquee-wrap::before, .marquee-wrap::after {
    content: "";
    position: absolute;
    top: 0; bottom: 0;
    width: 130px;
    z-index: 2;
    pointer-events: none;
}
.marquee-wrap::before { left: 0; background: linear-gradient(90deg, var(--bg), transparent); }
.marquee-wrap::after { right: 0; background: linear-gradient(270deg, var(--bg), transparent); }
.marquee { display: flex; gap: 54px; width: max-content; animation: marquee 36s linear infinite; }
.marquee-wrap:hover .marquee { animation-play-state: paused; }
@keyframes marquee { to { transform: translateX(-50%); } }
.marquee span {
    font-family: var(--mono);
    font-size: 15px;
    letter-spacing: 2px;
    color: var(--muted);
    white-space: nowrap;
    transition: color .3s, text-shadow .3s;
}
.marquee span:hover { color: var(--cyan); text-shadow: var(--glow-cyan); }
.marquee span i { font-style: normal; color: var(--violet); margin-right: 10px; font-size: 11px; }

/* ---------------- 服务流程 ---------------- */
.flow-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 16px; position: relative; }
.flow-grid::before {
    content: "";
    position: absolute;
    top: 27px; left: 8%; right: 8%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--cyan), var(--violet), transparent);
    opacity: .45;
}
.flow-step { text-align: center; position: relative; padding-top: 0; }
.flow-step .num {
    width: 54px; height: 54px;
    margin: 0 auto 16px;
    display: flex; align-items: center; justify-content: center;
    font-family: var(--mono);
    font-size: 19px;
    font-weight: 700;
    color: var(--cyan);
    background: var(--bg-2);
    border: 1px solid var(--line-strong);
    border-radius: 50%;
    box-shadow: 0 0 0 5px var(--bg), inset 0 0 16px rgba(0, 229, 255, 0.12);
    transition: all .3s;
    position: relative;
    z-index: 1;
}
.flow-step:hover .num { box-shadow: 0 0 0 5px var(--bg), var(--glow-cyan); color: #fff; }
.flow-step b { display: block; font-size: 15.5px; color: #fff; margin-bottom: 6px; letter-spacing: 1px; }
.flow-step span { font-size: 12.5px; color: var(--dim); line-height: 1.7; display: block; }

/* ---------------- 为什么选择我们 ---------------- */
.why-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.why-card { text-align: left; }
.why-card .w-num {
    font-family: var(--mono);
    font-size: 40px;
    font-weight: 800;
    line-height: 1;
    background: linear-gradient(150deg, rgba(0, 229, 255, 0.9), rgba(139, 92, 246, 0.75));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    opacity: .75;
    margin-bottom: 16px;
}
.why-card h3 { font-size: 17.5px; color: #fff; margin-bottom: 10px; letter-spacing: 1px; }
.why-card p { font-size: 14px; color: var(--muted); line-height: 1.9; }

/* ---------------- FAQ 手风琴 ---------------- */
.faq-wrap { max-width: 860px; margin: 0 auto; }
.faq-item {
    border: 1px solid var(--line);
    border-radius: 6px;
    background: rgba(10, 16, 32, 0.6);
    margin-bottom: 14px;
    overflow: hidden;
    transition: border-color .3s, box-shadow .3s;
}
.faq-item.open { border-color: var(--line-strong); box-shadow: var(--glow-cyan); }
.faq-q {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 19px 22px;
    background: none;
    border: none;
    color: var(--txt);
    font-size: 15.5px;
    font-family: var(--font);
    letter-spacing: .5px;
    cursor: pointer;
    text-align: left;
    transition: color .25s;
}
.faq-q:hover { color: var(--cyan); }
.faq-q .qi { font-family: var(--mono); font-size: 13px; color: var(--cyan); flex-shrink: 0; }
.faq-q .arrow {
    margin-left: auto;
    flex-shrink: 0;
    width: 12px; height: 12px;
    border-right: 2px solid var(--cyan);
    border-bottom: 2px solid var(--cyan);
    transform: rotate(-45deg);
    transition: transform .3s;
}
.faq-item.open .arrow { transform: rotate(45deg); }
.faq-a {
    max-height: 0;
    overflow: hidden;
    transition: max-height .4s ease;
}
.faq-a-inner {
    padding: 0 22px 20px 51px;
    color: var(--muted);
    font-size: 14.5px;
    line-height: 1.95;
    border-top: 1px dashed rgba(132, 148, 173, 0.18);
    padding-top: 16px;
    margin-top: -1px;
}
.faq-a-inner a { border-bottom: 1px dashed rgba(0, 229, 255, 0.4); }

/* ---------------- CTA 横幅 ---------------- */
.ctab {
    position: relative;
    border: 1px solid var(--line-strong);
    border-radius: 10px;
    padding: 58px 40px;
    text-align: center;
    background:
        radial-gradient(700px 260px at 50% 0%, rgba(139, 92, 246, 0.14), transparent 70%),
        radial-gradient(700px 260px at 50% 100%, rgba(0, 229, 255, 0.10), transparent 70%),
        rgba(8, 12, 24, 0.9);
    overflow: hidden;
}
.ctab h2 {
    font-size: clamp(24px, 3.4vw, 34px);
    color: #fff;
    letter-spacing: 2px;
    margin-bottom: 14px;
}
.ctab h2 em {
    font-style: normal;
    background: linear-gradient(120deg, var(--cyan), var(--purple));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}
.ctab p { color: var(--muted); margin-bottom: 30px; font-size: 15.5px; }
.ctab .btns { display: flex; justify-content: center; flex-wrap: wrap; gap: 18px; }
.ctab .mono-line { margin-top: 26px; font-family: var(--mono); font-size: 12.5px; color: var(--dim); letter-spacing: 2px; }

/* ---------------- 页脚 ---------------- */
.site-footer {
    margin-top: 96px;
    border-top: 1px solid var(--line);
    background: linear-gradient(180deg, rgba(7, 11, 22, 0.4), rgba(4, 6, 13, 0.96));
    position: relative;
    z-index: 1;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
    gap: 40px;
    padding: 56px 0 44px;
}
.footer-brand svg { width: 38px; height: 38px; filter: drop-shadow(0 0 8px rgba(0, 229, 255, 0.5)); margin-bottom: 14px; }
.footer-brand .fb-name { color: #fff; font-size: 17px; font-weight: 700; letter-spacing: 2px; margin-bottom: 4px; }
.footer-brand .fb-en { font-family: var(--mono); font-size: 10px; color: var(--cyan); letter-spacing: 2px; opacity: .8; display: block; margin-bottom: 16px; }
.footer-brand p { font-size: 13.5px; color: var(--muted); line-height: 1.95; }
.footer-col h4 {
    font-size: 15px;
    color: #fff;
    letter-spacing: 2px;
    margin-bottom: 18px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.footer-col h4::before { content: "▸"; color: var(--cyan); font-size: 12px; text-shadow: var(--glow-cyan); }
.footer-col li { margin-bottom: 10px; }
.footer-col a { color: var(--muted); font-size: 13.5px; transition: all .25s; }
.footer-col a:hover { color: var(--cyan); padding-left: 4px; text-shadow: var(--glow-cyan); }
.footer-contact li {
    color: var(--muted);
    font-size: 13.5px;
    display: flex;
    align-items: flex-start;
    gap: 9px;
    line-height: 1.8;
    margin-bottom: 11px;
}
.footer-contact svg { width: 15px; height: 15px; flex-shrink: 0; margin-top: 4px; color: var(--cyan); }
.footer-bar {
    border-top: 1px solid rgba(132, 148, 173, 0.12);
    padding: 20px 0;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
    font-size: 12.5px;
    color: var(--dim);
    letter-spacing: .5px;
}
.footer-bar a { color: var(--dim); }
.footer-bar a:hover { color: var(--cyan); }

/* ---------------- 内页头部 ---------------- */
.page-hero {
    position: relative;
    padding: 158px 0 72px;
    overflow: hidden;
    border-bottom: 1px solid var(--line);
    background:
        radial-gradient(900px 380px at 78% -10%, rgba(139, 92, 246, 0.12), transparent 62%),
        radial-gradient(700px 320px at 10% 0%, rgba(0, 229, 255, 0.09), transparent 60%),
        linear-gradient(180deg, rgba(7, 11, 22, 0.5), var(--bg-2));
}
.page-hero-inner { display: grid; grid-template-columns: 1.15fr .85fr; gap: 50px; align-items: center; }
.crumb {
    font-family: var(--mono);
    font-size: 12px;
    letter-spacing: 1.5px;
    color: var(--dim);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
}
.crumb a { color: var(--muted); }
.crumb a:hover { color: var(--cyan); }
.crumb .sep { color: var(--cyan); opacity: .6; }
.crumb .cur { color: var(--cyan); text-shadow: var(--glow-cyan); }
.page-hero h1 {
    font-size: clamp(28px, 4vw, 42px);
    font-weight: 700;
    color: #fff;
    line-height: 1.3;
    letter-spacing: 1.5px;
    margin-bottom: 8px;
}
.page-hero .ph-en { font-family: var(--mono); font-size: 12px; letter-spacing: 4px; color: var(--violet); display: block; margin-bottom: 20px; }
.page-hero .ph-desc { color: var(--muted); font-size: 15px; line-height: 2; max-width: 56ch; }
.page-hero .ph-desc strong { color: var(--txt); }
.ph-visual {
    position: relative;
    border-radius: 10px;
    border: 1px solid var(--line-strong);
    overflow: hidden;
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.55), var(--glow-cyan);
    transform: perspective(1100px) rotateY(-5deg) rotateX(2deg);
    transition: transform .45s;
}
.ph-visual:hover { transform: perspective(1100px) rotateY(0) rotateX(0); }
.ph-visual img { width: 100%; height: 300px; object-fit: cover; }
.ph-visual .ph-cap {
    position: absolute;
    left: 0; right: 0; bottom: 0;
    padding: 34px 18px 12px;
    background: linear-gradient(180deg, transparent, rgba(4, 6, 13, 0.92));
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 2px;
    color: var(--cyan);
}

/* ---------------- 内页正文组件 ---------------- */
.svc-section { padding: 66px 0 8px; }
.svc-section.alt { background: rgba(7, 11, 22, 0.45); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); margin: 0 calc(50% - 50vw); padding: 66px calc(50vw - 50%) 60px; width: 100vw; }
.svc-head { display: flex; align-items: baseline; gap: 16px; margin-bottom: 12px; }
.svc-head h2 { font-size: 24px; color: #fff; letter-spacing: 1.5px; }
.svc-head .sn { font-family: var(--mono); font-size: 15px; color: var(--cyan); opacity: .85; text-shadow: var(--glow-cyan); }
.svc-sub { color: var(--muted); font-size: 14.5px; line-height: 2; margin-bottom: 34px; max-width: 74ch; }

.svc-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.svc-grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
.svc-grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
.svc-item { padding: 24px 22px; }
.svc-item h3 { font-size: 16.5px; color: #fff; letter-spacing: 1px; margin-bottom: 9px; display: flex; align-items: center; gap: 9px; }
.svc-item h3 svg { width: 20px; height: 20px; color: var(--cyan); flex-shrink: 0; filter: drop-shadow(0 0 6px rgba(0, 229, 255, 0.5)); }
.svc-item p { font-size: 13.5px; color: var(--muted); line-height: 1.9; }

.spec-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px 30px; margin-top: 26px; }
.spec-list li {
    position: relative;
    padding-left: 22px;
    color: var(--muted);
    font-size: 14.5px;
    line-height: 1.9;
}
.spec-list li::before {
    content: "▸";
    position: absolute;
    left: 0;
    color: var(--cyan);
    text-shadow: var(--glow-cyan);
}
.spec-list li strong { color: var(--txt); font-weight: 600; }

/* 数据带 */
.data-band {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1px;
    background: var(--line);
    border: 1px solid var(--line);
    border-radius: 6px;
    overflow: hidden;
    margin: 40px 0 10px;
}
.data-band .d-item {
    background: rgba(8, 12, 24, 0.92);
    padding: 20px 16px;
    text-align: center;
}
.data-band b {
    display: block;
    font-family: var(--mono);
    font-size: 26px;
    color: var(--cyan);
    text-shadow: var(--glow-cyan);
    line-height: 1.35;
}
.data-band span { font-size: 12.5px; color: var(--dim); letter-spacing: 1px; }

/* 协议表格样式（工业协议/技术栈） */
.proto-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.proto-card { padding: 26px; }
.proto-card .proto-name { font-family: var(--mono); font-size: 18px; color: var(--cyan); letter-spacing: 2px; text-shadow: 0 0 10px rgba(0, 229, 255, 0.35); margin-bottom: 4px; }
.proto-card .proto-cn { font-size: 13px; color: var(--dim); margin-bottom: 13px; display: block; letter-spacing: 1px; }
.proto-card p { font-size: 13.5px; color: var(--muted); line-height: 1.9; }

/* ---------------- 案例卡片 ---------------- */
.case-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.case-card { padding: 0; display: flex; flex-direction: column; }
.case-card .case-cover { position: relative; height: 220px; overflow: hidden; }
.case-card .case-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.case-card:hover .case-cover img { transform: scale(1.06); }
.case-card .case-cover::after {
    content: "";
    position: absolute; inset: 0;
    background: linear-gradient(180deg, transparent 30%, rgba(5, 8, 16, 0.85));
}
.case-card .case-cover .case-tagline {
    position: absolute;
    left: 16px; bottom: 12px;
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 2px;
    color: var(--cyan);
    text-shadow: var(--glow-cyan);
}
.case-body { padding: 24px 24px 26px; flex: 1; display: flex; flex-direction: column; }
.case-body .case-tags { display: flex; flex-wrap: wrap; gap: 7px; margin-bottom: 13px; }
.case-body h3 { font-size: 18px; color: #fff; letter-spacing: 1px; margin-bottom: 12px; line-height: 1.5; }
.case-dl { display: grid; gap: 9px; font-size: 13.5px; color: var(--muted); line-height: 1.85; }
.case-dl dt {
    color: var(--cyan);
    font-family: var(--mono);
    font-size: 11.5px;
    letter-spacing: 2px;
    margin-right: 8px;
    display: inline-block;
}
.case-dl dd { display: inline; }
.case-dl .row { border-left: 2px solid rgba(0, 229, 255, 0.25); padding-left: 12px; }

/* 案例卡片整卡可点击 */
a.case-card { color: inherit; cursor: pointer; }
a.case-card:hover h3 { color: var(--cyan); text-shadow: var(--glow-cyan); transition: color .25s, text-shadow .25s; }

/* 封面右上角视频角标 */
.case-video-badge {
    position: absolute;
    top: 12px; right: 12px;
    z-index: 2;
    font-size: 11.5px;
    letter-spacing: 1px;
    color: #04121a;
    background: linear-gradient(115deg, var(--cyan), var(--violet));
    padding: 4px 10px;
    border-radius: 4px;
    font-weight: 600;
    box-shadow: var(--glow-cyan);
}

/* 详情页演示视频 */
.case-video {
    max-width: 860px;
    margin: 0 auto 30px;
    border: 1px solid var(--line-strong);
    border-radius: 10px;
    overflow: hidden;
    background: #000;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
}
.case-video video { width: 100%; display: block; max-height: 500px; }
.case-video-cap {
    display: block;
    padding: 10px 16px;
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 2px;
    color: var(--cyan);
    border-top: 1px solid var(--line);
    background: rgba(10, 16, 32, 0.8);
}

/* 详情页需求/方案/成果块 */
.case-dl-detail { max-width: 860px; margin: 0 auto 30px; padding: 22px 24px; border: 1px solid var(--line); border-radius: 8px; background: rgba(10, 16, 32, 0.45); gap: 12px; font-size: 14px; }

/* ---------------- 联系页 ---------------- */
.contact-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.contact-card { text-align: center; padding: 40px 24px; }
.contact-card .c-icon {
    width: 62px; height: 62px;
    margin: 0 auto 20px;
    display: flex; align-items: center; justify-content: center;
    border: 1px solid var(--line-strong);
    border-radius: 50%;
    background: rgba(0, 229, 255, 0.05);
    box-shadow: inset 0 0 18px rgba(0, 229, 255, 0.1);
}
.contact-card .c-icon svg { width: 26px; height: 26px; color: var(--cyan); filter: drop-shadow(0 0 8px rgba(0, 229, 255, 0.5)); }
.contact-card h3 { font-size: 17px; color: #fff; letter-spacing: 2px; margin-bottom: 8px; }
.contact-card .c-val {
    font-family: var(--mono);
    font-size: 19px;
    color: var(--cyan);
    letter-spacing: 1.5px;
    text-shadow: 0 0 14px rgba(0, 229, 255, 0.35);
    margin-bottom: 8px;
}
.contact-card p { font-size: 13px; color: var(--dim); }
.contact-card .c-note { margin-top: 14px; font-size: 12.5px; color: var(--muted); }

.copy-btn {
    margin-top: 14px;
    padding: 8px 22px;
    font-size: 12.5px;
    font-family: var(--mono);
    letter-spacing: 1px;
    color: var(--cyan);
    background: rgba(0, 229, 255, 0.05);
    border: 1px solid var(--line-strong);
    border-radius: 4px;
    cursor: pointer;
    transition: all .25s;
}
.copy-btn:hover { color: #fff; box-shadow: var(--glow-cyan); }
.copy-btn.ok { color: #0f0; border-color: rgba(0, 255, 120, 0.5); box-shadow: 0 0 14px rgba(0, 255, 120, 0.3); }

/* 关于页 */
.about-lead { font-size: 16px; color: var(--txt); line-height: 2.15; margin-bottom: 26px; }
.about-lead strong { color: var(--cyan); }
.about-grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: 40px; margin-top: 14px; }
.about-panel { padding: 30px; }
.about-panel h3 { color: #fff; font-size: 17px; letter-spacing: 1.5px; margin-bottom: 14px; display: flex; align-items: center; gap: 8px; }
.about-panel h3::before { content: "//"; font-family: var(--mono); color: var(--cyan); font-size: 14px; }
.about-panel p { font-size: 14px; color: var(--muted); line-height: 2; }
.val-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.val-card { text-align: center; padding: 32px 20px; }
.val-card b { display: block; font-size: 18px; color: #fff; letter-spacing: 2px; margin-bottom: 10px; }
.val-card b::after { content: ""; display: block; width: 28px; height: 2px; margin: 12px auto 0; background: linear-gradient(90deg, var(--cyan), var(--purple)); box-shadow: var(--glow-cyan); }
.val-card p { font-size: 13px; color: var(--muted); line-height: 1.9; }

/* ---------------- FAQ 页分组 ---------------- */
.faq-group-title {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 18px;
    color: #fff;
    letter-spacing: 1.5px;
    margin: 42px 0 20px;
}
.faq-group-title:first-of-type { margin-top: 0; }
.faq-group-title .gn { font-family: var(--mono); color: var(--cyan); font-size: 14px; }
.faq-group-title::after { content: ""; flex: 1; height: 1px; background: linear-gradient(90deg, var(--line-strong), transparent); }

/* ---------------- 滚动显现 ---------------- */
.reveal { opacity: 0; transform: translateY(34px); transition: opacity .8s ease, transform .8s ease; }
.reveal.in { opacity: 1; transform: none; }
.reveal[data-d="1"] { transition-delay: .1s; }
.reveal[data-d="2"] { transition-delay: .2s; }
.reveal[data-d="3"] { transition-delay: .3s; }
.reveal[data-d="4"] { transition-delay: .4s; }
.reveal[data-d="5"] { transition-delay: .5s; }

/* ---------------- 返回顶部 ---------------- */
.back-top {
    position: fixed;
    right: 26px; bottom: 30px;
    width: 46px; height: 46px;
    display: flex; align-items: center; justify-content: center;
    background: rgba(7, 11, 22, 0.85);
    border: 1px solid var(--line-strong);
    border-radius: 4px;
    color: var(--cyan);
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(14px);
    transition: all .3s;
    z-index: 90;
    backdrop-filter: blur(8px);
}
.back-top.show { opacity: 1; visibility: visible; transform: none; }
.back-top:hover { box-shadow: var(--glow-cyan); background: rgba(0, 229, 255, 0.1); }
.back-top svg { width: 20px; height: 20px; }

/* ================= 资讯中心（列表 / 详情 / 首页区块） ================= */

/* 详情页紧凑页头 */
.page-hero-compact { padding: 138px 0 44px; }

/* 列表布局：左侧分类栏 + 右侧列表（参考图形式） */
.news-layout { display: grid; grid-template-columns: 250px 1fr; gap: 30px; align-items: start; }

/* 左侧分类栏 */
.news-cats {
    position: sticky;
    top: 96px;
    border: 1px solid var(--line);
    border-radius: 8px;
    overflow: hidden;
    background: rgba(10, 16, 32, 0.55);
}
.news-cats-head {
    display: flex;
    align-items: baseline;
    gap: 10px;
    padding: 18px 20px;
    background: linear-gradient(115deg, var(--cyan), var(--violet));
    color: #04121a;
    font-weight: 700;
    font-size: 17px;
    letter-spacing: 2px;
}
.news-cats-head small { font-family: var(--mono); font-size: 11px; letter-spacing: 3px; font-weight: 600; opacity: .75; }
.news-cats > a {
    display: block;
    padding: 13px 20px;
    color: #e8eef9;
    font-size: 14.5px;
    letter-spacing: 1px;
    border-bottom: 1px solid rgba(0, 229, 255, 0.08);
    border-left: 3px solid transparent;
    transition: all .22s;
}
.news-cats > a:hover { color: #fff; background: rgba(0, 229, 255, 0.07); border-left-color: var(--line-strong); }
.news-cats > a.active { color: var(--cyan); background: rgba(0, 229, 255, 0.09); border-left-color: var(--cyan); text-shadow: var(--glow-cyan); }
.news-cats-contact { padding: 18px 20px 20px; }
.news-cats-contact p { color: #e8eef9; font-size: 13.5px; margin-bottom: 12px; }

/* 位置提示行 */
.news-crumb {
    font-size: 13.5px;
    color: #c9d4e6;
    padding: 12px 18px;
    margin-bottom: 18px;
    border: 1px solid var(--line);
    border-radius: 6px;
    background: rgba(10, 16, 32, 0.45);
}
.news-crumb a { color: #fff; }
.news-crumb a:hover { color: var(--cyan); }

/* 文章卡片（参考图形式：【分类】标题 / 摘要 / 日期 + 查看更多） */
.news-item { padding: 24px 28px 20px; margin-bottom: 18px; }
.news-item::before {
    content: "";
    position: absolute;
    left: 0; top: 0; bottom: 0;
    width: 3px;
    background: linear-gradient(180deg, var(--cyan), var(--violet));
    transform: scaleY(0);
    transform-origin: top;
    transition: transform .32s ease;
}
.news-item:hover::before { transform: scaleY(1); }
.news-item h2 {
    font-size: 18px;
    font-weight: 700;
    line-height: 1.55;
    letter-spacing: .5px;
    margin-bottom: 13px;
    padding-bottom: 13px;
    border-bottom: 1px dashed rgba(0, 229, 255, 0.16);
}
.news-item h2 a { color: #fff; transition: color .25s, text-shadow .25s; }
.news-item h2 a:hover { color: var(--cyan); text-shadow: var(--glow-cyan); }
.news-item h2 em { font-style: normal; color: var(--cyan); }
.news-top { position: absolute; top: 22px; right: 22px; }
.news-item p {
    color: #e6edf7;
    font-size: 14px;
    line-height: 1.95;
    margin-bottom: 15px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.news-item-foot { display: flex; justify-content: space-between; align-items: center; }
.news-item-foot time { font-family: var(--mono); font-size: 12.5px; color: #c9d4e6; letter-spacing: 1px; }
.news-more { font-size: 13px; color: var(--cyan); letter-spacing: 1px; transition: text-shadow .25s; }
.news-item:hover .news-more { text-shadow: var(--glow-cyan); }
.tag-top { background: linear-gradient(90deg, rgba(255, 45, 120, 0.22), rgba(255, 45, 120, 0.05)); color: var(--pink) !important; border-color: rgba(255, 45, 120, 0.45) !important; }

/* 空状态 */
.news-empty { padding: 46px 30px; text-align: center; color: var(--muted); font-size: 14px; }
.news-empty a { color: var(--cyan); }

/* 分页（TP 输出的 bootstrap pagination 深色适配） */
.news-pager { margin-top: 6px; }
.news-pager .pagination { display: flex; flex-wrap: wrap; gap: 8px; margin: 0; padding: 0; list-style: none; }
.news-pager .pagination li a,
.news-pager .pagination li span {
    display: block;
    padding: 7px 14px;
    font-family: var(--mono);
    font-size: 13px;
    color: var(--muted);
    border: 1px solid var(--line);
    border-radius: 4px;
    background: rgba(10, 16, 32, 0.5);
    transition: all .25s;
}
.news-pager .pagination li a:hover { color: var(--cyan); border-color: var(--line-strong); }
.news-pager .pagination li.active span { color: var(--cyan); border-color: var(--cyan); background: rgba(0, 229, 255, 0.08); box-shadow: var(--glow-cyan); }
.news-pager .pagination li.disabled span { opacity: .4; }

/* 文章详情 */
.article-head { max-width: 860px; margin: 0 auto 30px; }
.article-head h1 { font-size: clamp(22px, 3.2vw, 34px); font-weight: 700; color: #fff; line-height: 1.45; letter-spacing: 1px; margin-bottom: 14px; }
.article-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 14px; font-size: 12.5px; color: var(--dim); }
.article-body { max-width: 860px; margin: 0 auto; }
.article-hero { border: 1px solid var(--line-strong); border-radius: 10px; overflow: hidden; margin-bottom: 34px; box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5); }
.article-hero img { width: 100%; max-height: 460px; object-fit: cover; }

/* 正文排版 */
.prose { font-size: 15.5px; color: var(--txt); line-height: 2.1; }
.prose p { margin-bottom: 18px; }
.prose h2 { font-size: 21px; color: #fff; letter-spacing: 1px; margin: 42px 0 16px; padding-left: 14px; border-left: 3px solid var(--cyan); line-height: 1.5; }
.prose h3 { font-size: 17.5px; color: #fff; margin: 30px 0 14px; padding-left: 14px; border-left: 3px solid var(--violet); line-height: 1.5; }
.prose ul, .prose ol { margin: 0 0 18px 6px; display: grid; gap: 10px; }
.prose ul li { padding-left: 18px; position: relative; }
.prose ul li::before { content: "▸"; position: absolute; left: 0; color: var(--cyan); }
.prose ol { counter-reset: olc; }
.prose ol li { padding-left: 32px; position: relative; counter-increment: olc; }
.prose ol li::before { content: counter(olc, decimal-leading-zero); position: absolute; left: 0; font-family: var(--mono); color: var(--cyan); font-size: 13px; top: 1px; }
.prose blockquote { margin: 22px 0; padding: 16px 20px; border: 1px solid var(--line); border-left: 3px solid var(--violet); background: rgba(139, 92, 246, 0.06); border-radius: 0 6px 6px 0; color: var(--muted); }
.prose strong { color: #fff; }
.prose a { color: var(--cyan); border-bottom: 1px dashed rgba(0, 229, 255, 0.4); }
.prose a:hover { text-shadow: var(--glow-cyan); }
.prose img { border-radius: 8px; border: 1px solid var(--line); margin: 10px auto 22px; }
.prose code { font-family: var(--mono); font-size: 13px; color: var(--purple); background: rgba(139, 92, 246, 0.1); padding: 2px 7px; border-radius: 4px; }
.prose pre { background: #070b16; border: 1px solid var(--line); border-radius: 8px; padding: 18px 20px; overflow-x: auto; margin: 20px 0; }
.prose pre code { background: none; padding: 0; color: var(--txt); }
.prose table { width: 100%; border-collapse: collapse; margin: 20px 0; font-size: 14px; }
.prose th, .prose td { border: 1px solid var(--line); padding: 10px 14px; text-align: left; }
.prose th { background: rgba(0, 229, 255, 0.06); color: #fff; font-weight: 600; }
.prose hr { border: none; height: 1px; background: linear-gradient(90deg, var(--line-strong), transparent); margin: 36px 0; }

/* 文章标签 */
.article-tags { display: flex; flex-wrap: wrap; gap: 10px; margin: 30px 0 0; padding-top: 22px; border-top: 1px solid var(--line); }

/* 上一篇 / 下一篇 */
.post-nav { max-width: 860px; margin: 44px auto 0; display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.post-nav a, .post-nav .pn-none {
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 18px 20px;
    background: rgba(10, 16, 32, 0.5);
    transition: all .25s;
    display: grid;
    gap: 6px;
}
.post-nav a:hover { border-color: var(--line-strong); box-shadow: var(--glow-cyan); }
.post-nav span { font-family: var(--mono); font-size: 11px; letter-spacing: 2px; color: var(--dim); }
.post-nav b { font-size: 14.5px; color: var(--txt); line-height: 1.6; font-weight: 500; }
.post-nav a:hover b { color: var(--cyan); }
.post-nav .pn-next { text-align: right; }
.post-nav .pn-none { opacity: .45; }

/* 相关阅读 */
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.related-card { padding: 0; overflow: hidden; display: flex; flex-direction: column; }
.related-card img { height: 170px; width: 100%; object-fit: cover; }
.related-body { padding: 20px 22px 24px; }
.related-body time { font-family: var(--mono); font-size: 11px; color: var(--dim); letter-spacing: 1px; }
.related-body h3 { font-size: 16px; color: #fff; line-height: 1.55; margin: 8px 0 10px; transition: color .25s; }
.related-card:hover h3 { color: var(--cyan); }
.related-body p { font-size: 12.5px; color: var(--muted); line-height: 1.85; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

/* 首页最新资讯 */
.feed-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.feed-card { padding: 26px 26px 24px; display: flex; flex-direction: column; gap: 12px; }
.feed-meta { display: flex; justify-content: space-between; align-items: center; }
.feed-meta time { font-family: var(--mono); font-size: 11.5px; color: var(--dim); letter-spacing: 1px; }
.feed-card h3 { font-size: 17px; color: #fff; line-height: 1.55; transition: color .25s; }
.feed-card:hover h3 { color: var(--cyan); text-shadow: var(--glow-cyan); }
.feed-card p { font-size: 13px; color: var(--muted); line-height: 1.9; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

/* ---------------- 响应式 ---------------- */
@media (max-width: 1024px) {
    .biz-grid { grid-template-columns: repeat(2, 1fr); }
    .sol-grid { grid-template-columns: repeat(3, 1fr); }
    .flow-grid { grid-template-columns: repeat(3, 1fr); gap: 28px 16px; }
    .flow-grid::before { display: none; }
    .why-grid { grid-template-columns: repeat(2, 1fr); }
    .svc-grid, .svc-grid.cols-4 { grid-template-columns: repeat(2, 1fr); }
    .page-hero-inner { grid-template-columns: 1fr; gap: 34px; }
    .ph-visual { transform: none; max-width: 560px; }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
    .about-grid { grid-template-columns: 1fr; }
    .proto-grid { grid-template-columns: 1fr; }
    .news-layout { grid-template-columns: 1fr; }
    .news-cats { position: static; }
    .news-cats > a { display: inline-block; border: 1px solid var(--line); border-radius: 4px; padding: 8px 16px; margin: 0 6px 6px 0; border-left-width: 1px; }
}

@media (max-width: 768px) {
    .section { padding: 66px 0; }
    .main-nav, .header-phone { display: none; }
    .burger { display: flex; }
    .hero { min-height: auto; padding: 130px 0 70px; }
    .hero-stats { grid-template-columns: repeat(2, 1fr); margin-top: 52px; }
    .hero-scroll { display: none; }
    .case-grid { grid-template-columns: 1fr; }
    .contact-grid { grid-template-columns: 1fr; }
    .val-grid { grid-template-columns: 1fr; }
    .spec-list { grid-template-columns: 1fr; }
    .data-band { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr; gap: 30px; padding: 44px 0 34px; }
    .footer-bar { justify-content: center; text-align: center; }
    .ctab { padding: 44px 22px; }
    .back-top { right: 14px; bottom: 20px; }
    .related-grid, .feed-grid, .post-nav { grid-template-columns: 1fr; }
    .post-nav .pn-next { text-align: left; }
    .page-hero-compact { padding: 118px 0 34px; }
}

@media (max-width: 560px) {
    .biz-grid { grid-template-columns: 1fr; }
    .sol-grid { grid-template-columns: repeat(2, 1fr); }
    .flow-grid { grid-template-columns: repeat(2, 1fr); }
    .why-grid { grid-template-columns: 1fr; }
    .svc-grid, .svc-grid.cols-2 { grid-template-columns: 1fr; }
    .hero-cta .btn { width: 100%; }
    .brand-name small { display: none; }
    .news-item { padding: 18px 18px 16px; }
    .news-top { top: 16px; right: 16px; }
}

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