/* ==========================================================================
   CloudUHD — 企业官网样式
   ========================================================================== */

:root {
    --bg: #0b0b0c;
    --bg-2: #121214;
    --panel: #121214;
    --panel-solid: #141416;
    --line: rgba(255, 255, 255, .08);
    --line-strong: rgba(255, 255, 255, .16);
    --text: #ececec;
    --muted: #8d8d93;
    --brand: #f0a43a;
    --c1: var(--brand);
    --c2: var(--text);
    --c3: var(--brand);
    --c4: var(--brand);
    --grad: linear-gradient(var(--brand), var(--brand));
    --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "HarmonyOS Sans SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", sans-serif;
    --mono: "JetBrains Mono", "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
    --ease: cubic-bezier(.2, .7, .2, 1);
    --ease-in-out: cubic-bezier(.76, 0, .24, 1);
    --header-h: 76px;
    --radius: 20px;
    --accent: var(--c1);
}

*, *::before, *::after { box-sizing: border-box; }

html {
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
    scroll-padding-top: var(--header-h);
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: var(--font);
    font-size: 16px;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, p { margin: 0; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
::selection { background: rgba(240, 164, 58, .35); color: #fff; }

.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 clamp(20px, 4vw, 40px);
}

.section { position: relative; padding: clamp(80px, 12vw, 150px) 0; }

/* ---------- 通用元素 ---------- */

.sr-only {
    position: absolute !important;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.grad-text {
    font-style: normal;
    color: var(--accent);
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    font-family: var(--mono);
    font-size: 12px;
    letter-spacing: .28em;
    text-transform: uppercase;
    color: var(--accent, var(--c1));
    margin-bottom: 20px;
}

.eyebrow::before {
    content: "";
    width: 28px;
    height: 1px;
    background: currentColor;
}

.section-head { max-width: 760px; margin-bottom: clamp(40px, 6vw, 72px); }
.section-head--center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head--center .eyebrow { justify-content: center; }

.section-title {
    font-size: clamp(2rem, 4.4vw, 3.4rem);
    line-height: 1.18;
    font-weight: 800;
    letter-spacing: -.01em;
}

.section-desc { margin-top: 18px; color: var(--muted); font-size: clamp(15px, 1.4vw, 17px); }

.pill-row { display: flex; flex-wrap: wrap; gap: 10px; }
.pill-row li {
    padding: 6px 14px;
    border: 1px solid var(--line-strong);
    border-radius: 4px;
    font-size: 13px;
    color: #c8c8cc;
    background: rgba(255, 255, 255, .02);
}

.action-row { display: flex; flex-wrap: wrap; gap: 14px; }
.action-row--center { justify-content: center; }

/* ---------- 按钮 ---------- */

.btn {
    --mx: 0px; --my: 0px;
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 24px;
    border-radius: 6px;
    font-size: 15px;
    font-weight: 600;
    line-height: 1;
    white-space: nowrap;
    overflow: hidden;
    isolation: isolate;
    transform: translate(var(--mx), var(--my));
    transition: transform .35s var(--ease), box-shadow .35s var(--ease), background-color .35s, border-color .35s, color .35s;
}

.btn > span { position: relative; z-index: 1; }

.btn--glow, .btn--solid {
    color: #0b0b0c;
    background: #ececec;
}
.btn--glow:hover, .btn--solid:hover { background: #fff; }

.btn--ghost, .btn--line {
    color: var(--text);
    border: 1px solid var(--line-strong);
    background: transparent;
}
.btn--ghost:hover, .btn--line:hover { border-color: rgba(255, 255, 255, .45); background: rgba(255, 255, 255, .04); }

.btn__arrow {
    position: relative;
    z-index: 1;
    width: 16px;
    height: 10px;
    overflow: hidden;
}
.btn__arrow::before, .btn__arrow::after {
    content: "→";
    position: absolute;
    left: 0;
    top: 50%;
    font-style: normal;
    line-height: 1;
    transform: translateY(-50%);
    transition: transform .4s var(--ease);
}
.btn__arrow::after { transform: translate(-130%, -50%); }
.btn:hover .btn__arrow::before { transform: translate(130%, -50%); }
.btn:hover .btn__arrow::after { transform: translate(0, -50%); }

/* ---------- 预加载 ---------- */

.preloader {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: grid;
    place-items: center;
    pointer-events: none;
}
.preloader__shutter {
    position: absolute;
    left: 0;
    width: 100%;
    height: 50.5%;
    background: var(--bg);
    transition: transform 1s var(--ease-in-out);
}
.preloader__shutter--top { top: 0; }
.preloader__shutter--bottom { bottom: 0; }
.preloader__inner {
    position: relative;
    z-index: 2;
    width: min(320px, 70vw);
    text-align: center;
    transition: opacity .4s, transform .6s var(--ease);
}
.preloader__logo { width: 180px; margin: 0 auto 26px; animation: plPulse 1.6s ease-in-out infinite; }
.preloader__tc {
    display: flex;
    justify-content: space-between;
    font-family: var(--mono);
    font-size: 13px;
    color: var(--muted);
    letter-spacing: .12em;
}
.preloader__tc i { font-style: normal; color: #e5484d; animation: blink 1s steps(2) infinite; }
.preloader__bar { height: 2px; margin: 10px 0; background: var(--line); overflow: hidden; }
.preloader__bar span { display: block; height: 100%; width: 100%; background: var(--grad); transform: scaleX(0); transform-origin: left; }
.preloader__pct { font-family: var(--mono); font-size: 12px; color: var(--brand); text-align: right; }

html:not(.js) .preloader, html.pl-done .preloader, html.rm .preloader { display: none; }
html.is-loaded .preloader__inner { opacity: 0; transform: scale(.94); }
html.is-loaded .preloader__shutter--top { transform: translateY(-100%); }
html.is-loaded .preloader__shutter--bottom { transform: translateY(100%); }

@keyframes plPulse { 50% { opacity: .55; } }
@keyframes blink { 50% { opacity: 0; } }

/* ---------- 页面切换幕布 ---------- */

.curtain {
    position: fixed;
    inset: 0;
    z-index: 999;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    pointer-events: none;
}
.curtain span {
    background: var(--bg-2);
    transform: scaleY(0);
    transform-origin: bottom;
    transition: transform .55s var(--ease-in-out);
}
.curtain span:nth-child(2) { transition-delay: .05s; }
.curtain span:nth-child(3) { transition-delay: .1s; }
.curtain span:nth-child(4) { transition-delay: .15s; }
html.is-leaving .curtain span { transform: scaleY(1); }

/* ---------- 滚动进度 / 光标 / 噪点 ---------- */

.scroll-progress { position: fixed; top: 0; left: 0; right: 0; height: 2px; z-index: 120; }
.scroll-progress span {
    display: block;
    height: 100%;
    background: var(--brand);
    transform: scaleX(var(--p, 0));
    transform-origin: left;
}

.cursor { display: none; }
html.has-cursor .cursor { display: block; }
.cursor__dot, .cursor__ring {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1001;
    pointer-events: none;
    border-radius: 50%;
}
.cursor__dot { width: 6px; height: 6px; margin: -3px 0 0 -3px; background: #fff; }
.cursor__ring {
    width: 38px;
    height: 38px;
    margin: -19px 0 0 -19px;
    border: 1px solid rgba(255, 255, 255, .35);
    transition: width .3s var(--ease), height .3s var(--ease), margin .3s var(--ease), background-color .3s, border-color .3s;
}
html.cursor-hover .cursor__ring {
    width: 64px;
    height: 64px;
    margin: -32px 0 0 -32px;
    background: rgba(255, 255, 255, .06);
    border-color: rgba(255, 255, 255, .7);
}
html.cursor-down .cursor__ring { width: 28px; height: 28px; margin: -14px 0 0 -14px; }

.grain {
    position: fixed;
    inset: -50%;
    z-index: 200;
    pointer-events: none;
    opacity: .045;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
    animation: grain 1.2s steps(6) infinite;
}
@keyframes grain {
    0% { transform: translate(0, 0); }
    20% { transform: translate(-4%, 3%); }
    40% { transform: translate(3%, -5%); }
    60% { transform: translate(-6%, -2%); }
    80% { transform: translate(5%, 4%); }
    100% { transform: translate(0, 0); }
}

/* ---------- 页头 ---------- */

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    height: var(--header-h);
    transition: transform .5s var(--ease), background-color .4s, border-color .4s, backdrop-filter .4s;
    border-bottom: 1px solid transparent;
}
.site-header.is-scrolled {
    background: rgba(11, 11, 12, .78);
    backdrop-filter: blur(16px) saturate(140%);
    -webkit-backdrop-filter: blur(16px) saturate(140%);
    border-bottom-color: var(--line);
}
.site-header.is-hidden { transform: translateY(-100%); }
html.menu-open .site-header { transform: none; background: transparent; border-color: transparent; backdrop-filter: none; }

.site-header__inner { height: 100%; display: flex; align-items: center; gap: 28px; }

.brand { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.brand__logo { height: 42px; width: auto; transition: filter .4s; }
.brand:hover .brand__logo { opacity: .85; }
.brand__tag {
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: .22em;
    color: var(--muted);
    padding-left: 12px;
    border-left: 1px solid var(--line-strong);
}

.nav { position: relative; display: flex; align-items: center; gap: 4px; margin-left: auto; }
.nav__item { position: relative; }
.nav__item--drop { position: static; }
.nav__link {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 14px;
    font-size: 15px;
    color: #c8c8cc;
    transition: color .3s;
}
.nav__link::after {
    content: "";
    position: absolute;
    left: 14px;
    right: 14px;
    bottom: 4px;
    height: 1px;
    background: var(--text);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform .45s var(--ease);
}
.nav__link:hover, .nav__link.is-active, .nav__item.is-active > .nav__link { color: #fff; }
.nav__link:hover::after, .nav__link.is-active::after, .nav__item.is-active > .nav__link::after { transform: scaleX(1); transform-origin: left; }
.nav__caret {
    width: 6px;
    height: 6px;
    border-right: 1.5px solid currentColor;
    border-bottom: 1.5px solid currentColor;
    transform: translateY(-2px) rotate(45deg);
    transition: transform .3s;
}
.nav__item--drop:hover .nav__caret, .nav__item--drop:focus-within .nav__caret { transform: translateY(1px) rotate(225deg); }

.mega {
    position: absolute;
    top: 100%;
    right: 0;
    width: min(880px, 92vw);
    padding-top: 14px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(12px);
    transition: opacity .35s var(--ease), transform .45s var(--ease), visibility .35s;
}
.nav__item--drop:hover .mega, .nav__item--drop:focus-within .mega, .nav__item--drop.is-open .mega {
    opacity: 1;
    visibility: visible;
    transform: none;
}
.mega__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
    padding: 12px;
    border: 1px solid var(--line-strong);
    border-radius: 18px;
    background: rgba(18, 18, 20, .97);
    backdrop-filter: blur(18px);
    box-shadow: 0 30px 80px -20px rgba(0, 0, 0, .7);
}
.mega__card {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 10px;
    border-radius: 12px;
    transition: background-color .3s;
}
.mega__card:hover, .mega__card.is-current { background: rgba(255, 255, 255, .04); }
.mega__num { position: absolute; top: 16px; left: 16px; z-index: 1; font-family: var(--mono); font-size: 11px; color: #fff; text-shadow: 0 1px 4px rgba(0, 0, 0, .6); }
.mega__thumb { display: block; aspect-ratio: 16 / 9; border-radius: 8px; overflow: hidden; margin-bottom: 6px; border: 1px solid var(--line); }
.mega__thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s var(--ease); }
.mega__card:hover .mega__thumb img { transform: scale(1.08); }
.mega__name { font-weight: 700; font-size: 14px; }
.mega__name em { font-style: normal; color: var(--accent); margin-left: 2px; }
.mega__role { font-size: 12px; color: var(--muted); }

.burger { display: none; position: relative; width: 44px; height: 44px; margin-left: auto; z-index: 2; }
.burger span {
    position: absolute;
    left: 11px;
    width: 22px;
    height: 1.5px;
    background: #fff;
    transition: transform .45s var(--ease), opacity .3s, top .45s var(--ease);
}
.burger span:nth-child(1) { top: 15px; }
.burger span:nth-child(2) { top: 21px; width: 14px; }
.burger span:nth-child(3) { top: 27px; }
html.menu-open .burger span:nth-child(1) { top: 21px; transform: rotate(45deg); }
html.menu-open .burger span:nth-child(2) { opacity: 0; transform: translateX(10px); }
html.menu-open .burger span:nth-child(3) { top: 21px; transform: rotate(-45deg); }

.mobile-menu { position: fixed; inset: 0; z-index: 99; visibility: hidden; transition: visibility 0s .7s; }
.mobile-menu__bg {
    position: absolute;
    inset: 0;
    background: var(--bg);
    clip-path: circle(0 at calc(100% - 42px) 38px);
    transition: clip-path .7s var(--ease-in-out);
}
.mobile-menu__nav {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: calc(var(--header-h) + 30px) 28px 40px;
    height: 100%;
    overflow-y: auto;
}
.mobile-menu__nav a {
    padding: 12px 0;
    font-size: 24px;
    font-weight: 700;
    border-bottom: 1px solid var(--line);
    opacity: 0;
    transform: translateY(24px);
    transition: opacity .4s, transform .5s var(--ease);
}
.mobile-menu__nav a em { font-style: normal; font-size: 15px; color: var(--muted); font-weight: 400; margin-left: 6px; }
html.menu-open { overflow: hidden; }
html.menu-open .mobile-menu { visibility: visible; transition: none; }
html.menu-open .mobile-menu__bg { clip-path: circle(150% at calc(100% - 42px) 38px); }
html.menu-open .mobile-menu__nav a { opacity: 1; transform: none; transition-delay: calc(.25s + var(--i) * .05s); }

/* ---------- 首屏 ---------- */

.hero {
    position: relative;
    min-height: 100vh;
    min-height: 100svh;
    display: flex;
    align-items: center;
    padding: calc(var(--header-h) + 40px) 0 100px;
    overflow: hidden;
}
.hero__canvas, [data-hero-canvas] { position: absolute; inset: 0; width: 100%; height: 100%; }
.hero__grid {
    position: absolute;
    left: -50%;
    right: -50%;
    bottom: -10%;
    height: 60%;
    background-image:
        linear-gradient(rgba(255, 255, 255, .06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, .06) 1px, transparent 1px);
    background-size: 60px 60px;
    transform: perspective(600px) rotateX(62deg);
    transform-origin: center top;
    mask-image: linear-gradient(to top, #000 10%, transparent 90%);
    -webkit-mask-image: linear-gradient(to top, #000 10%, transparent 90%);
    animation: gridMove 3s linear infinite;
}
@keyframes gridMove { to { background-position: 0 60px, 0 0; } }

.hero__glow { display: none; }
@keyframes drift { to { transform: translate(-80px, 60px) scale(1.15); } }

.hero__inner {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1fr 1.05fr;
    gap: clamp(30px, 5vw, 70px);
    align-items: center;
}
.hero__title {
    font-size: clamp(2.6rem, 6vw, 5rem);
    line-height: 1.12;
    font-weight: 900;
    letter-spacing: -.02em;
    margin-bottom: 26px;
}
.hero__line { display: block; }
.hero__title em { display: inline-block; }
.hero__lead { max-width: 34em; color: #b4b4ba; font-size: clamp(15px, 1.4vw, 18px); margin-bottom: 26px; }
.hero .pill-row { margin-bottom: 34px; }

.hero__visual { position: relative; }

.float-chip {
    position: absolute;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px 8px 8px;
    font-size: 13px;
    border: 1px solid var(--line-strong);
    border-radius: 6px;
    background: rgba(18, 18, 20, .92);
    box-shadow: 0 14px 30px -12px rgba(0, 0, 0, .8);
    animation: floatY 6s ease-in-out infinite;
    z-index: 3;
}
.float-chip b {
    display: grid;
    place-items: center;
    width: 28px;
    height: 28px;
    border-radius: 4px;
    font-family: var(--mono);
    font-size: 11px;
    color: var(--brand);
    background: rgba(240, 164, 58, .1);
}
.float-chip--1 { top: -4%; left: -6%; }
.float-chip--2 { top: 18%; right: -5%; animation-delay: -1.5s; }
.float-chip--3 { bottom: 10%; left: -8%; animation-delay: -3s; }
.float-chip--4 { bottom: -7%; left: 36%; animation-delay: -4.5s; }
@keyframes floatY { 50% { transform: translateY(-14px); } }

.scroll-cue {
    position: absolute;
    left: 50%;
    bottom: 28px;
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    transform: translateX(-50%);
    color: var(--muted);
}
.scroll-cue span { position: relative; width: 22px; height: 36px; border: 1.5px solid var(--line-strong); border-radius: 12px; }
.scroll-cue span::after {
    content: "";
    position: absolute;
    left: 50%;
    top: 7px;
    width: 3px;
    height: 7px;
    margin-left: -1.5px;
    border-radius: 2px;
    background: var(--text);
    animation: wheel 1.8s var(--ease) infinite;
}
.scroll-cue em { font-family: var(--mono); font-style: normal; font-size: 10px; letter-spacing: .3em; }
@keyframes wheel { 0% { opacity: 0; transform: translateY(-4px); } 30% { opacity: 1; } 100% { opacity: 0; transform: translateY(12px); } }

/* ---------- 设备边框（首屏 / 产品页） ---------- */

.device {
    --rx: 0deg; --ry: 0deg; --gx: 50%; --gy: 50%;
    position: relative;
    border-radius: 12px;
    padding: 1px;
    background: rgba(255, 255, 255, .14);
    box-shadow: 0 40px 90px -40px rgba(0, 0, 0, .9);
    transform: perspective(1400px) rotateX(var(--rx)) rotateY(var(--ry));
    transform-style: preserve-3d;
    transition: transform .6s var(--ease);
}
.device.is-tilting { transition: transform .12s linear; }
.device::after {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: radial-gradient(600px circle at var(--gx) var(--gy), rgba(255, 255, 255, .06), transparent 40%);
    pointer-events: none;
    opacity: 0;
    transition: opacity .4s;
}
.device:hover::after { opacity: 1; }
.device__bar {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 10px 14px;
    border-radius: 11px 11px 0 0;
    background: #17171a;
    font-family: var(--mono);
    font-size: 11px;
    color: var(--muted);
}
.device__bar i { width: 9px; height: 9px; border-radius: 50%; background: #3a3a3f; }
.device__bar span { margin-left: 10px; }
.device__screen { position: relative; overflow: hidden; border-radius: 0 0 11px 11px; background: #17171a; }
.device__screen img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; }
.device__scan { display: none; }
.device__hud {
    position: absolute;
    left: 14px;
    right: 14px;
    bottom: 12px;
    display: flex;
    justify-content: space-between;
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: .1em;
    transform: translateZ(40px);
}
.hud__rec, .hud__tc { padding: 4px 9px; border-radius: 4px; background: rgba(10, 10, 11, .85); }
.hud__rec { display: inline-flex; align-items: center; gap: 6px; color: #fff; }
.hud__rec i { width: 7px; height: 7px; border-radius: 50%; background: #e5484d; animation: blink 1.2s steps(2) infinite; }
.hud__tc { color: var(--brand); }
.device__corner { position: absolute; width: 14px; height: 14px; border: 1px solid rgba(255, 255, 255, .3); transform: translateZ(30px); }
.device__corner--tl { top: -10px; left: -10px; border-right: 0; border-bottom: 0; }
.device__corner--tr { top: -10px; right: -10px; border-left: 0; border-bottom: 0; }
.device__corner--bl { bottom: -10px; left: -10px; border-right: 0; border-top: 0; }
.device__corner--br { bottom: -10px; right: -10px; border-left: 0; border-top: 0; }

/* ---------- 滚动字幕带 ---------- */

.ticker {
    position: relative;
    padding: 26px 0;
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    overflow: hidden;
}
.ticker__row { display: flex; overflow: hidden; }
.ticker__row + .ticker__row { margin-top: 8px; }
.marquee__track { display: flex; flex-shrink: 0; min-width: 100%; animation: marquee 40s linear infinite; }
.ticker__row--reverse .marquee__track { animation-direction: reverse; animation-duration: 50s; }
.ticker span {
    flex-shrink: 0;
    padding: 0 28px;
    font-size: clamp(22px, 3.4vw, 40px);
    font-weight: 800;
    white-space: nowrap;
    color: #5f5f66;
    transition: color .3s;
}
.ticker span::after { content: "/"; margin-left: 56px; font-weight: 300; color: rgba(255, 255, 255, .12); }
.ticker__row:first-child span:hover { color: var(--text); }
.ticker__row--reverse span { font-family: var(--mono); font-size: clamp(14px, 1.8vw, 20px); font-weight: 500; letter-spacing: .2em; color: #4a4a50; }.ticker:hover .marquee__track { animation-play-state: paused; }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- 引言与数据 ---------- */

.intro__statement {
    max-width: 1080px;
    font-size: clamp(1.5rem, 3.2vw, 2.6rem);
    line-height: 1.5;
    font-weight: 700;
    letter-spacing: -.005em;
}
.intro__statement .w { color: rgba(236, 236, 236, .16); transition: color .4s; }
.intro__statement .w.is-lit { color: var(--text); }
html:not(.js) .intro__statement .w, html.rm .intro__statement .w { color: var(--text); }

.intro { padding-bottom: clamp(40px, 6vw, 70px); }
.products { padding-top: clamp(50px, 7vw, 90px); }

.metrics {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    margin-top: clamp(60px, 8vw, 100px);
    border-top: 1px solid var(--line);
}
.metric {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding: 32px 24px 8px 0;
}
.metric + .metric { padding-left: 24px; border-left: 1px solid var(--line); }
.metric::before {
    content: "";
    position: absolute;
    top: -1px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--grad);
    transition: width 1.2s var(--ease) .3s;
}
.metric.is-in::before { width: 100%; }
.metric strong {
    font-size: clamp(2.4rem, 5vw, 3.8rem);
    line-height: 1;
    font-weight: 900;
    color: var(--text);
}
.metric strong small { color: var(--muted); }
.metric strong small { font-size: .4em; margin-left: 4px; }
.metric > span { font-weight: 700; font-size: 16px; }
.metric em { font-style: normal; font-size: 13px; color: var(--muted); }

/* ---------- 产品堆叠卡片 ---------- */

.stack { position: relative; }
.stack__card {
    --s: 1; --b: 1;
    position: sticky;
    top: calc(var(--header-h) + 24px + var(--n) * 18px);
    display: grid;
    grid-template-columns: .95fr 1.15fr;
    gap: clamp(24px, 4vw, 56px);
    align-items: center;
    min-height: min(78vh, 640px);
    margin-bottom: 9vh;
    padding: clamp(24px, 4vw, 52px);
    border: 1px solid var(--line-strong);
    border-radius: 16px;
    background: #121214;
    box-shadow: 0 -20px 60px -30px rgba(0, 0, 0, .9);
    overflow: hidden;
    transform: scale(var(--s));
    filter: brightness(var(--b));
    transform-origin: center top;
    will-change: transform;
}
.stack__card:last-child { margin-bottom: 0; }
.stack__card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 10%;
    right: 10%;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, .18), transparent);
}
.stack__info { position: relative; z-index: 2; }
.stack__meta { display: flex; justify-content: space-between; align-items: center; margin-bottom: 24px; font-family: var(--mono); font-size: 12px; letter-spacing: .14em; }
.stack__index { color: var(--accent); }
.stack__index i { font-style: normal; color: var(--muted); }
.stack__code { color: var(--muted); }
.stack__name { font-size: clamp(2rem, 4.2vw, 3.4rem); line-height: 1.1; font-weight: 900; margin-bottom: 18px; }
.stack__name em { display: block; font-style: normal; font-size: .55em; color: var(--accent); margin-top: 6px; }
.stack__brief { color: #b4b4ba; font-size: 17px; margin-bottom: 22px; }
.stack__pills { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 30px; }
.stack__pills li { padding: 4px 12px; border-radius: 4px; font-size: 13px; color: #c8c8cc; background: rgba(255, 255, 255, .03); border: 1px solid var(--line); }
.stack__media {
    position: relative;
    z-index: 2;
    display: block;
    aspect-ratio: 16 / 9;
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid var(--line-strong);
    box-shadow: 0 30px 60px -25px rgba(0, 0, 0, .9);
}
.stack__img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: transform 1.2s var(--ease); }
.stack__img--b { animation: crossfade 9s ease-in-out infinite; }
.stack__media:hover .stack__img { transform: scale(1.05); }
@keyframes crossfade { 0%, 40% { opacity: 0; } 50%, 90% { opacity: 1; } 100% { opacity: 0; } }
.stack__sheen { display: none; }
.stack__bignum {
    position: absolute;
    right: -10px;
    bottom: -60px;
    z-index: 1;
    font-size: clamp(160px, 22vw, 300px);
    line-height: 1;
    font-weight: 900;
    color: transparent;
    -webkit-text-stroke: 1px rgba(255, 255, 255, .05);
    pointer-events: none;
}

/* ---------- 全链路流程 ---------- */

.flow { position: relative; height: 320vh; }
.flow__sticky { position: sticky; top: 0; height: 100vh; display: flex; align-items: center; overflow: hidden; }
.flow__track { position: relative; }
.flow__svg { position: absolute; top: 0; left: 0; width: 100%; height: 160px; overflow: visible; }
.flow__path-bg, .flow__path { fill: none; stroke-width: 2; vector-effect: non-scaling-stroke; }
.flow__path-bg { stroke: var(--line-strong); stroke-dasharray: 4 6; }
.flow__path { stroke: var(--brand); stroke-width: 2; }
.flow__dot {
    position: absolute;
    top: 0;
    left: 0;
    width: 12px;
    height: 12px;
    margin: -6px 0 0 -6px;
    border-radius: 50%;
    background: var(--brand);
    box-shadow: 0 0 0 5px rgba(240, 164, 58, .18);
    will-change: transform;
}
.flow__nodes { position: relative; display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; padding-top: 56px; }
.flow__node { text-align: center; opacity: .35; transition: opacity .6s; }
.flow__node > :not(.flow__badge) { transform: translateY(16px); transition: transform .7s var(--ease); }
.flow__node.is-active { opacity: 1; }
.flow__node.is-active > :not(.flow__badge) { transform: none; }
.flow__badge {
    display: grid;
    place-items: center;
    width: 48px;
    height: 48px;
    margin: 0 auto 70px;
    border-radius: 50%;
    font-family: var(--mono);
    font-size: 13px;
    background: var(--bg);
    border: 1px solid var(--line-strong);
    color: var(--muted);
    transition: all .5s var(--ease);
}
.flow__node.is-active .flow__badge {
    color: #0b0b0c;
    background: var(--accent);
    border-color: var(--accent);
}
.flow__node h3 { font-size: clamp(18px, 1.8vw, 22px); font-weight: 800; margin-bottom: 6px; }
.flow__node a, .flow__tag { display: inline-block; font-size: 14px; color: #c8c8cc; margin-bottom: 10px; border-bottom: 1px solid transparent; transition: border-color .3s, color .3s; }
.flow__node a:hover { color: var(--text); border-bottom-color: currentColor; }
.flow__node p { font-size: 14px; color: var(--muted); max-width: 18em; margin: 0 auto; }

/* ---------- 架构轨道 ---------- */

.arch { overflow: hidden; }
.arch__grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(40px, 6vw, 90px); align-items: center; }
.arch__list { margin-top: 36px; display: grid; gap: 2px; }
.arch__list li {
    position: relative;
    display: grid;
    grid-template-columns: 110px 1fr;
    gap: 16px;
    padding: 18px 0 18px 20px;
    border-bottom: 1px solid var(--line);
    transition: background-color .3s, padding .4s var(--ease);
}
.arch__list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    width: 6px;
    height: 6px;
    margin-top: -3px;
    border-radius: 50%;
    background: var(--brand);
}
.arch__list li:hover { padding-left: 28px; background: rgba(255, 255, 255, .02); }
.arch__list b { font-weight: 800; }
.arch__list span { color: var(--muted); font-size: 15px; }

.orbit { position: relative; width: 100%; max-width: 540px; aspect-ratio: 1; margin: 0 auto; }
.orbit__rings i {
    position: absolute;
    top: 50%;
    left: 50%;
    border-radius: 50%;
    border: 1px dashed var(--line-strong);
    transform: translate(-50%, -50%);
    animation: spin 60s linear infinite;
}
.orbit__rings i:nth-child(1) { width: 100%; height: 100%; border-style: solid; border-color: var(--line); }
.orbit__rings i:nth-child(2) { width: 74%; height: 74%; animation-direction: reverse; animation-duration: 40s; }
.orbit__rings i:nth-child(3) { width: 44%; height: 44%; border-color: rgba(255, 255, 255, .12); animation-duration: 25s; }
@keyframes spin { to { transform: translate(-50%, -50%) rotate(360deg); } }

.orbit__spin { position: absolute; inset: 0; animation: spinPlain 50s linear infinite; }
@keyframes spinPlain { to { transform: rotate(360deg); } }
.orbit__arm { position: absolute; top: 50%; left: 50%; width: 43%; height: 0; transform: rotate(var(--deg)); transform-origin: 0 0; }
.orbit__beam { position: absolute; left: 35%; right: 40px; top: -1px; height: 1px; background: rgba(255, 255, 255, .14); overflow: hidden; }
.orbit__beam i {
    position: absolute;
    top: 0;
    right: 0;
    width: 40px;
    height: 1px;
    background: linear-gradient(270deg, transparent, var(--brand));
    animation: beam 2.4s var(--ease-in-out) infinite;
    animation-delay: var(--delay);
}
@keyframes beam { from { transform: translateX(40px); } to { transform: translateX(calc(-1 * 400px)); } }
.orbit__node {
    position: absolute;
    right: 0;
    top: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    width: 92px;
    height: 92px;
    margin: -46px -46px 0 0;
    border-radius: 50%;
    text-align: center;
    background: #141416;
    border: 1px solid var(--line-strong);
    animation: counterSpin 50s linear infinite;
}
@keyframes counterSpin {
    from { transform: rotate(calc(-1 * var(--deg))); }
    to { transform: rotate(calc(-1 * var(--deg) - 360deg)); }
}
.orbit__node b { display: block; font-family: var(--mono); font-size: 18px; color: var(--text); line-height: 1; }
.orbit__node em { display: block; font-style: normal; font-size: 10px; color: var(--muted); }
.orbit__core {
    position: absolute;
    top: 50%;
    left: 50%;
    display: grid;
    place-content: center;
    width: 30%;
    height: 30%;
    border-radius: 50%;
    text-align: center;
    transform: translate(-50%, -50%);
    background: #17171a;
    border: 1px solid var(--brand);
}
.orbit__core b { font-family: var(--mono); font-size: clamp(20px, 2.6vw, 30px); letter-spacing: .1em; color: var(--brand); }
.orbit__core em { font-style: normal; font-size: 12px; color: var(--muted); }
.orbit__pulse, .orbit__pulse::after {
    position: absolute;
    inset: 0;
    border-radius: 50%;
    border: 1px solid rgba(240, 164, 58, .4);
    animation: pulse 3s var(--ease) infinite;
}
.orbit__pulse::after { content: ""; animation-delay: 1.5s; }
@keyframes pulse { from { transform: scale(1); opacity: .8; } to { transform: scale(2.2); opacity: 0; } }

/* ---------- 聚光卡片（痛点 / 模块 / 入口 / 目标） ---------- */

[data-spotlight] { --mx: 50%; --my: 50%; position: relative; isolation: isolate; }
[data-spotlight]::before {
    content: "";
    position: absolute;
    inset: 0;
    z-index: -1;
    border-radius: inherit;
    background: radial-gradient(360px circle at var(--mx) var(--my), rgba(255, 255, 255, .22), transparent 50%);
    opacity: 0;
    transition: opacity .4s;
}
[data-spotlight]::after {
    content: "";
    position: absolute;
    inset: 1px;
    z-index: -1;
    border-radius: inherit;
    background: #121214;
}
[data-spotlight]:hover::before { opacity: 1; }

.pains__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.pain {
    display: flex;
    flex-direction: column;
    gap: 14px;
    padding: 30px 26px;
    border-radius: var(--radius);
    background: var(--line);
    transition: transform .5s var(--ease);
}
.pain:hover { transform: translateY(-6px); }
.pain__num { font-family: var(--mono); font-size: 12px; color: var(--accent); letter-spacing: .2em; }
.pain h3 { font-size: 22px; font-weight: 800; }
.pain__problem { color: var(--muted); font-size: 15px; flex: 1; }
.pain__answer { display: flex; gap: 10px; padding-top: 14px; border-top: 1px solid var(--line); font-size: 14px; color: #d4d4d8; }
.pain__answer i { flex-shrink: 0; position: relative; width: 14px; height: 14px; margin-top: 5px; }
.pain__answer i::after { content: ""; position: absolute; left: 4px; top: 0; width: 5px; height: 10px; border: solid var(--accent); border-width: 0 1.5px 1.5px 0; transform: rotate(45deg); }

.pains__grid > :last-child:nth-child(3n + 1) { grid-column: 1 / -1; }

/* ---------- 整套系统 ---------- */

.suite { --pipe: 56px; --hot: rgba(240, 164, 58, .8); --shield-bg: #0f0f11; position: relative; }
.suite__layer { margin-bottom: 10px; font-family: var(--mono); font-size: 11px; letter-spacing: .2em; color: var(--muted); }
.suite__row { position: relative; display: grid; grid-template-columns: 1fr var(--pipe) 1fr var(--pipe) 1fr; }

.suite__hub {
    display: flex;
    align-items: center;
    gap: 22px;
    padding: 18px 24px;
    border: 1px solid var(--line-strong);
    border-radius: 16px;
    background: linear-gradient(90deg, rgba(240, 164, 58, .07), rgba(255, 255, 255, .015) 45%);
}
.suite__hub-core { position: relative; display: grid; place-items: center; flex-shrink: 0; width: 60px; height: 60px; border-radius: 50%; border: 1px solid var(--brand); background: #17171a; }
.suite__hub-core b { font-family: var(--mono); font-size: 14px; letter-spacing: .12em; color: var(--brand); }
.suite__hub-core i, .suite__hub-core i::after { position: absolute; inset: -1px; border-radius: 50%; border: 1px solid rgba(240, 164, 58, .45); animation: pulse 3s var(--ease) infinite; }
.suite__hub-core i::after { content: ""; animation-delay: 1.5s; }
.suite__hub-text { flex: 1; display: flex; flex-direction: column; min-width: 0; }
.suite__hub-text b { font-size: 18px; font-weight: 800; }
.suite__hub-text em { font-style: normal; font-size: 13px; color: var(--muted); }
.suite__chips { display: flex; flex-wrap: wrap; gap: 8px; justify-content: flex-end; }
.suite__chips i { font-style: normal; font-size: 12px; padding: 5px 12px; border: 1px solid var(--line-strong); border-radius: 999px; color: #c9c9cd; }

.suite__row--rise { height: 64px; }
.suite__riser, .suite__stub { position: relative; }
.suite__riser::before, .suite__stub::before { content: ""; position: absolute; top: 0; bottom: 0; left: 50%; width: 1px; background: var(--line-strong); transition: background-color .5s; }
.suite__riser i, .suite__stub i, .suite__pipe i, .suite__busline i {
    position: absolute;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--brand);
    box-shadow: 0 0 10px var(--brand);
}
.suite__riser i, .suite__stub i { left: 50%; margin-left: -2.5px; animation: suiteUp 2.4s linear infinite; }
.suite__riser:nth-child(3) i { animation-delay: -.8s; }
.suite__riser:nth-child(5) i { animation-delay: -1.6s; }
.suite__stub i { animation-duration: 2.8s; animation-direction: alternate; }
.suite__stub:nth-child(4) i { animation-delay: -1s; }
.suite__stub:nth-child(6) i { animation-delay: -2s; }
.suite__note { align-self: center; justify-self: center; font-family: var(--mono); font-size: 10px; letter-spacing: .12em; color: var(--muted); white-space: nowrap; }

.suite__shield {
    position: relative;
    padding: 44px 26px 26px;
    border: 1px dashed rgba(240, 164, 58, .35);
    border-radius: 24px;
    background: var(--shield-bg);
    transition: border-color .5s, box-shadow .5s;
}
.suite__scan { position: absolute; inset: 0; border-radius: inherit; overflow: hidden; pointer-events: none; }
.suite__scan i {
    position: absolute;
    top: 0;
    bottom: 0;
    left: -120px;
    width: 120px;
    background: linear-gradient(90deg, transparent, rgba(240, 164, 58, .035) 75%, rgba(240, 164, 58, .22) 99%, transparent);
    animation: suiteScan 7s linear infinite;
}
.suite__ps {
    position: absolute;
    top: 0;
    left: calc(26px + (100% - 52px - 2 * var(--pipe)) / 3 + var(--pipe) / 2);
    z-index: 2;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 6px 16px 6px 6px;
    border: 1px solid rgba(240, 164, 58, .45);
    border-radius: 999px;
    background: #141416;
    white-space: nowrap;
    transform: translate(-50%, -50%);
    transition: border-color .5s, box-shadow .5s, opacity .5s;
}
.suite__ps .suite__code { width: 30px; height: 30px; border-radius: 50%; font-size: 11px; }
.suite__ps .suite__name b { font-size: 15px; }
.suite__ps .suite__duty { font-size: 12px; }
.suite__ps .suite__live { padding: 0 0 0 12px; border-top: 0; border-left: 1px solid var(--line-strong); }

.suite__mod {
    display: grid;
    grid-template-columns: auto 1fr;
    grid-template-areas: "code name" "duty duty" "live live";
    align-items: center;
    gap: 10px 12px;
    padding: 18px;
    border: 1px solid var(--line-strong);
    border-radius: 16px;
    background: #141416;
    transition: border-color .5s, box-shadow .5s, background-color .5s, opacity .5s;
}
.suite__mod:hover { border-color: rgba(240, 164, 58, .55); }
.suite__code {
    grid-area: code;
    display: grid;
    place-items: center;
    width: 40px;
    height: 40px;
    border-radius: 10px;
    border: 1px solid var(--line-strong);
    font-family: var(--mono);
    font-size: 13px;
    font-weight: 700;
    color: var(--brand);
    transition: background-color .5s, color .5s, border-color .5s;
}
.suite__name { grid-area: name; display: flex; align-items: baseline; gap: 6px; min-width: 0; }
.suite__name b { font-size: 17px; font-weight: 800; }
.suite__name em { font-style: normal; font-size: 13px; color: var(--brand); }
.suite__duty { grid-area: duty; font-size: 13px; color: var(--muted); }
.suite__live { grid-area: live; display: flex; align-items: center; gap: 8px; padding-top: 10px; border-top: 1px solid var(--line); font-size: 12px; color: var(--muted); }
.suite__live i { width: 6px; height: 6px; border-radius: 50%; background: var(--brand); animation: suiteBlink 2s ease-in-out infinite; }
.suite__live b { margin-left: auto; font-family: var(--mono); font-size: 13px; font-weight: 600; color: var(--text); }
.suite__live b.is-tick { animation: suiteTick .8s var(--ease); }

.suite__pipe { position: relative; }
.suite__pipe::before { content: ""; position: absolute; top: 50%; left: 6px; right: 6px; height: 1px; background: var(--line-strong); transition: background-color .5s, border-color .5s; }
.suite__pipe::after { content: ""; position: absolute; top: 50%; right: 6px; width: 7px; height: 7px; border: solid var(--line-strong); border-width: 1px 1px 0 0; transform: translateY(-50%) rotate(45deg); transition: border-color .5s; }
.suite__pipe i { top: 50%; margin-top: -3px; animation: suiteX 1.8s linear infinite; }
.suite__pipe--dash::before { height: 0; background: none; border-top: 1px dashed var(--line-strong); }
.suite__pipe--dash::after { display: none; }
.suite__pipe--dash i { animation-duration: 2.6s; animation-direction: alternate; }

.suite__row--bus { height: 70px; }
.suite__busline { position: absolute; top: 50%; left: calc((100% - 2 * var(--pipe)) / 6); right: calc((100% - 2 * var(--pipe)) / 6); height: 1px; background: var(--line-strong); transition: background-color .5s; }
.suite__busline i { top: -2.5px; animation: suiteX 4.2s linear infinite; }
.suite__busline i + i { animation-direction: reverse; animation-delay: -2.1s; }
.suite__busline em {
    position: absolute;
    top: 50%;
    left: 50%;
    z-index: 1;
    padding: 3px 14px;
    border: 1px solid var(--line-strong);
    border-radius: 999px;
    background: var(--shield-bg);
    font-style: normal;
    font-family: var(--mono);
    font-size: 11px;
    color: var(--muted);
    white-space: nowrap;
    transform: translate(-50%, -50%);
}

.suite__caption { display: flex; align-items: center; gap: 18px; margin-top: 24px; padding: 16px 22px; border: 1px solid var(--line); border-radius: 14px; background: rgba(255, 255, 255, .02); }
.suite__num { flex-shrink: 0; font-family: var(--mono); font-size: 13px; color: var(--brand); }
.suite__caption p { flex: 1; min-height: 1.7em; font-size: 15px; color: #d4d4d8; }
.suite__caption p.is-swap { animation: suiteCap .6s var(--ease); }
.suite__bars { display: flex; flex-shrink: 0; gap: 4px; }
.suite__bars i { width: 18px; height: 3px; border-radius: 2px; background: var(--line-strong); transition: background-color .4s; }
.suite__bars i.is-done { background: var(--brand); }

/* 巡检高亮 */
.suite.is-touring :is(.suite__mod, .suite__hub, .suite__ps):not(.is-on) { opacity: .55; }
.suite :is(.suite__mod, .suite__hub).is-on { border-color: var(--hot); background: #17150f; box-shadow: 0 0 0 1px rgba(240, 164, 58, .25), 0 18px 50px -20px rgba(240, 164, 58, .5); }
.suite__ps.is-on { border-color: var(--brand); box-shadow: 0 0 26px -6px rgba(240, 164, 58, .7); }
.suite .is-on .suite__code { background: var(--brand); border-color: var(--brand); color: #0b0b0c; }
.suite__hub { transition: border-color .5s, box-shadow .5s, background-color .5s, opacity .5s; }
.suite[data-on="postshield"] .suite__shield { border-color: var(--hot); box-shadow: inset 0 0 60px -30px rgba(240, 164, 58, .5); }
.suite[data-on="postshield"] .suite__scan i { animation-duration: 2.6s; }
.suite .is-hot::before, .suite .suite__busline.is-hot { background: var(--hot); }
.suite .suite__pipe--dash.is-hot::before { background: none; border-top-color: var(--hot); }
.suite .suite__pipe.is-hot::after { border-color: var(--hot); }

/* 进入视口时逐层拼装 */
html.js:not(.rm) .suite:not(.is-built) :is(.suite__layer, .suite__hub, .suite__shield, .suite__mod, .suite__ps, .suite__pipe, .suite__riser, .suite__stub, .suite__busline, .suite__note, .suite__caption) { opacity: 0; }
html.js:not(.rm) .suite.is-built .suite__hub { animation: suiteIn .9s var(--ease) backwards; }
html.js:not(.rm) .suite.is-built .suite__layer { animation: suiteFade .6s var(--ease) .1s backwards; }
html.js:not(.rm) .suite.is-built .suite__shield { animation: suiteFade .8s var(--ease) .15s backwards; }
html.js:not(.rm) .suite.is-built .suite__mod { animation: suiteIn .8s var(--ease) var(--d) backwards; }
html.js:not(.rm) .suite.is-built :is(.suite__pipe, .suite__riser, .suite__stub, .suite__busline, .suite__note) { animation: suiteFade .6s var(--ease) .9s backwards; }
html.js:not(.rm) .suite.is-built .suite__ps { animation: suitePop .7s var(--ease) 1.1s backwards; }
html.js:not(.rm) .suite.is-built .suite__caption { animation: suiteFade .6s var(--ease) 1.3s backwards; }

@keyframes suiteIn { from { opacity: 0; transform: translateY(18px) scale(.96); } }
@keyframes suiteFade { from { opacity: 0; } }
@keyframes suitePop { from { opacity: 0; transform: translate(-50%, -50%) scale(.8); } }
@keyframes suiteUp { from { top: 100%; opacity: 0; } 15%, 85% { opacity: 1; } to { top: 0; opacity: 0; } }
@keyframes suiteX { from { left: 0; opacity: 0; } 15%, 85% { opacity: 1; } to { left: calc(100% - 6px); opacity: 0; } }
@keyframes suiteScan { to { left: 100%; } }
@keyframes suiteBlink { 50% { opacity: .3; } }
@keyframes suiteTick { from { color: var(--brand); } }
@keyframes suiteCap { from { opacity: 0; transform: translateY(6px); } }

/* ---------- CTA ---------- */

.cta { position: relative; padding: clamp(110px, 16vw, 200px) 0; text-align: center; overflow: hidden; }
.cta__bg {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 900px;
    height: 900px;
    margin: -450px 0 0 -450px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255, 255, 255, .05), transparent 60%);
}
.cta__inner { position: relative; }
.cta .eyebrow { justify-content: center; }
.cta__title { font-size: clamp(2.4rem, 6.4vw, 5.4rem); line-height: 1.1; font-weight: 900; letter-spacing: -.02em; margin-bottom: 20px; }
.cta__title em { display: inline-block; }
.cta__desc { color: var(--muted); font-size: 17px; margin-bottom: 36px; }

/* ---------- 页脚 ---------- */

.site-footer { position: relative; border-top: 1px solid var(--line); background: #0a0a0b; overflow: hidden; }
.site-footer__marquee { display: flex; overflow: hidden; padding: 30px 0 10px; }
.site-footer__marquee span {
    flex-shrink: 0;
    padding-right: 80px;
    font-size: clamp(80px, 14vw, 200px);
    line-height: 1;
    font-weight: 900;
    letter-spacing: -.03em;
    color: transparent;
    -webkit-text-stroke: 1px rgba(255, 255, 255, .07);
}
.site-footer__marquee .marquee__track { animation-duration: 60s; }
.site-footer__grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 40px; padding-top: 50px; padding-bottom: 50px; }
.site-footer__brand img { width: 170px; margin-bottom: 18px; }
.site-footer__brand p { color: var(--muted); font-size: 14px; max-width: 30em; }
.site-footer__col h4 { font-size: 14px; letter-spacing: .1em; margin-bottom: 18px; color: #fff; }
.site-footer__col li + li { margin-top: 10px; }
.site-footer__col a { position: relative; font-size: 14px; color: var(--muted); transition: color .3s, padding .4s var(--ease); }
.site-footer__col a::before { content: "→"; position: absolute; left: -18px; opacity: 0; color: var(--c1); transition: opacity .3s, left .4s var(--ease); }
.site-footer__col a:hover { color: #fff; padding-left: 18px; }
.site-footer__col a:hover::before { left: 0; opacity: 1; }
.site-footer__bottom {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 10px 24px;
    padding-top: 24px;
    padding-bottom: 30px;
    padding-right: 90px;
    border-top: 1px solid var(--line);
    font-size: 13px;
    color: #6e6e74;
}
.site-footer__bottom a:hover { color: var(--c1); }
.to-top {
    position: fixed;
    right: clamp(16px, 3vw, 32px);
    bottom: clamp(16px, 3vw, 32px);
    z-index: 90;
    width: 52px;
    height: 52px;
    border-radius: 50%;
    background: rgba(18, 18, 20, .85);
    backdrop-filter: blur(10px);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: opacity .4s, transform .5s var(--ease), visibility .4s;
}
.to-top.is-visible { opacity: 1; visibility: visible; transform: none; }
.to-top svg { width: 100%; height: 100%; transform: rotate(-90deg); }
.to-top circle { fill: none; stroke-width: 2; }
.to-top__track { stroke: var(--line-strong); }
.to-top__ring { stroke: var(--c1); stroke-dasharray: 132; stroke-dashoffset: 132; stroke-linecap: round; }
.to-top path { fill: none; stroke: #fff; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; transform: rotate(90deg); transform-origin: center; transition: transform .4s var(--ease); }
.to-top:hover path { transform: rotate(90deg) translateX(-3px); }

/* ---------- 产品页 ---------- */

.p-hero { position: relative; padding: calc(var(--header-h) + 60px) 0 clamp(80px, 10vw, 120px); overflow: hidden; }
.p-hero__bg { position: absolute; inset: 0; pointer-events: none; }
.p-hero__bg::before {
    content: "";
    position: absolute;
    top: -20%;
    right: -10%;
    width: 60%;
    height: 90%;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255, 255, 255, .04), transparent 65%);
}
.p-hero__word {
    position: absolute;
    bottom: 2%;
    left: 0;
    white-space: nowrap;
    font-size: clamp(100px, 18vw, 260px);
    font-weight: 900;
    line-height: 1;
    color: transparent;
    -webkit-text-stroke: 1px rgba(255, 255, 255, .045);
    animation: wordSlide 30s linear infinite alternate;
}
@keyframes wordSlide { from { transform: translateX(0); } to { transform: translateX(-30%); } }
.p-hero__grid { position: relative; display: grid; grid-template-columns: 1fr 1.1fr; gap: clamp(30px, 5vw, 70px); align-items: center; }
.p-hero__title { font-size: clamp(2.6rem, 6vw, 4.8rem); line-height: 1.05; font-weight: 900; letter-spacing: -.02em; margin-bottom: 24px; }
.p-hero__title > span, .p-hero__title > em { display: block; }
.p-hero__title > em { font-size: .62em; margin-top: 8px; }
.p-hero__lead { color: #b4b4ba; font-size: clamp(15px, 1.4vw, 18px); margin-bottom: 24px; max-width: 34em; }
.p-hero .pill-row { margin-bottom: 30px; }
.p-hero__users { margin-top: 26px; font-size: 14px; color: var(--muted); display: flex; gap: 12px; align-items: center; }
.p-hero__users + .p-hero__users { margin-top: 10px; }
.p-hero__users span { flex-shrink: 0; font-family: var(--mono); font-size: 11px; letter-spacing: .14em; padding: 3px 8px; border: 1px solid var(--line-strong); border-radius: 4px; color: var(--accent); }

.p-hero .device__corner { border-color: var(--accent); }
.p-hero .eyebrow, .product .eyebrow { color: var(--accent); }

.breadcrumb { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin-bottom: 26px; font-family: var(--mono); font-size: 12px; letter-spacing: .1em; color: var(--muted); }
.breadcrumb a:hover { color: #fff; }
.breadcrumb i { font-style: normal; opacity: .4; }
.breadcrumb span { color: var(--accent, var(--c1)); }

.caps__grid { display: grid; grid-template-columns: 1fr 1.15fr; gap: clamp(40px, 6vw, 80px); align-items: start; }
.caps__list { margin-top: 30px; counter-reset: cap; }
.caps__list li {
    position: relative;
    display: flex;
    align-items: baseline;
    gap: 22px;
    padding: 22px 0;
    border-bottom: 1px solid var(--line);
    overflow: hidden;
}
.caps__list li::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -1px;
    width: 100%;
    height: 1px;
    background: var(--accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform .6s var(--ease);
}
.caps__list li:hover::after { transform: scaleX(1); }
.caps__list span { font-family: var(--mono); font-size: 13px; color: var(--accent); }
.caps__list b { font-size: clamp(17px, 1.8vw, 21px); font-weight: 700; transition: transform .4s var(--ease); }
.caps__list li:hover b { transform: translateX(8px); }
.caps__list b { color: var(--muted); transition: transform .4s var(--ease), color .4s var(--ease); }
.caps__list li:hover b, .caps__list li.is-current b { color: var(--text); }
.caps__list li.is-current b { transform: translateX(8px); }
.caps__list li.is-current::after { transform: scaleX(1); }
html:not(.js) .caps__list b { color: var(--text); }

/* 核心能力联动面板 */
.caps__visual { position: sticky; top: calc(var(--header-h) + 36px); }
.cv {
    position: relative;
    padding: 22px 26px 24px;
    border: 1px solid var(--line-strong);
    border-radius: 22px;
    background: radial-gradient(circle at 50% 38%, rgba(240, 164, 58, .07), transparent 58%), var(--panel);
    box-shadow: 0 40px 80px -30px rgba(0, 0, 0, .9);
    overflow: hidden;
}
.cv::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px);
    background-size: 32px 32px;
    -webkit-mask-image: radial-gradient(circle at 50% 40%, #000 0, transparent 70%);
    mask-image: radial-gradient(circle at 50% 40%, #000 0, transparent 70%);
    opacity: .6;
    pointer-events: none;
}
.cv > * { position: relative; }
.cv__bar { display: flex; justify-content: space-between; align-items: center; font-family: var(--mono); font-size: 11px; letter-spacing: .16em; color: var(--muted); }
.cv__live { display: inline-flex; align-items: center; gap: 8px; }
.cv__live i { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); animation: cvPulse 1.6s ease-in-out infinite; }
.cv__count b { color: var(--text); font-weight: 600; }

.cv__stage {
    position: relative;
    aspect-ratio: 16 / 10;
    max-height: 52vh;
    margin: 18px 0 16px;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: rgba(0, 0, 0, .28);
    overflow: hidden;
}
.cv__scene { position: absolute; inset: 14px; animation: cvSceneIn .6s var(--ease) both; transition: opacity .4s, transform .45s var(--ease), filter .4s; }
.cv__scene.is-out { opacity: 0; transform: scale(.95); filter: blur(6px); }
.cv__cap { display: flex; align-items: center; gap: 16px; min-height: 3.4em; }
.cv__cap b { flex-shrink: 0; font-family: var(--mono); font-size: 34px; font-weight: 600; line-height: 1; color: var(--accent); }
.cv__text { font-size: 16px; font-weight: 600; line-height: 1.6; }

/* 能力场景（SVG） */
.fx { display: block; width: 100%; height: 100%; overflow: visible; }
.fx * { transform-box: fill-box; transform-origin: center; }
.fx [transform] { transform-box: view-box; transform-origin: 0 0; }
.fx text { font-family: var(--mono); font-size: 9px; fill: var(--muted); }
.fx .fx-cn { font-family: var(--font); font-size: 10.5px; fill: #c9c9cd; }
.fx .fx-cn-s { font-size: 9px; fill: var(--muted); }
.fx .fx-sm { font-size: 8px; fill: #c9c9cd; }
.fx .fx-dark { fill: #0b0b0c; font-weight: 600; }
.fx .fx-big { font-size: 20px; font-weight: 600; fill: var(--text); }
.fx .fx-big2 { font-size: 14px; font-weight: 600; fill: var(--text); }
.fx .fx-hubt { fill: var(--accent); font-size: 11px; font-weight: 600; }
.fx .acc-t { fill: var(--accent); }
.fx .warn-t { fill: #e5534b; }
.fx .acc { fill: var(--accent); }
.fx .mid { fill: rgba(255, 255, 255, .34); }
.fx .dim { fill: rgba(255, 255, 255, .12); }
.fx .trk { fill: rgba(255, 255, 255, .06); }
.fx .bar { fill: rgba(255, 255, 255, .26); }
.fx .off { fill: none; stroke: rgba(255, 255, 255, .2); stroke-dasharray: 2 2; }
.fx .warn { fill: #e5534b; }
.fx .ln { fill: none; stroke: rgba(255, 255, 255, .2); stroke-width: 1; }
.fx .ln-f { fill: none; stroke: rgba(255, 255, 255, .06); stroke-width: 1; }
.fx .ln-a { fill: none; stroke: var(--accent); stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }
.fx .ln-w { fill: none; stroke: rgba(255, 255, 255, .75); stroke-width: 1.5; stroke-linecap: round; }
.fx .wf { fill: rgba(255, 255, 255, .75); }
.fx .film { fill: rgba(255, 255, 255, .04); stroke: rgba(255, 255, 255, .16); }
.fx .frm { fill: #fff; }
.fx .node { fill: var(--bg); stroke: rgba(255, 255, 255, .45); stroke-width: 1.2; }
.fx .node2 { fill: var(--bg); stroke: rgba(255, 255, 255, .22); }
.fx .hole2 { fill: var(--bg); stroke: rgba(255, 255, 255, .16); }
.fx .hubc { fill: #241b10; stroke: var(--accent); stroke-width: 1.2; }
.fx .ring-a { fill: none; stroke: var(--accent); stroke-width: 1.2; }
.fx .warn-r { fill: none; stroke: #e5534b; stroke-width: 1.2; }
.fx .kb { fill: rgba(240, 164, 58, .18); stroke: var(--accent); }
.fx .bub { fill: rgba(240, 164, 58, .14); stroke: rgba(240, 164, 58, .6); }
.fx .chip { fill: rgba(255, 255, 255, .05); stroke: rgba(255, 255, 255, .16); }
.fx .diff { fill: none; stroke: var(--accent); stroke-width: 1.2; stroke-dasharray: 3 2; }
.fx .hill { fill: rgba(255, 255, 255, .1); }
.fx .hill2 { fill: rgba(255, 255, 255, .17); }
.fx .area { fill: rgba(240, 164, 58, .12); }
.fx .aisle { fill: rgba(255, 255, 255, .04); stroke: rgba(255, 255, 255, .1); stroke-dasharray: 3 3; }
.fx .sweep { fill: rgba(240, 164, 58, .16); }
.fx .gtrk { fill: none; stroke: rgba(255, 255, 255, .08); stroke-width: 14; }
.fx .gval { fill: none; stroke: var(--accent); stroke-width: 14; animation: fxDash 1.6s var(--ease) both; }
.fx .seg { fill: none; stroke-width: 20; animation: fxSeg .9s var(--ease) var(--dl, 0s) both; }
.fx .warn-ln { fill: none; stroke: #e5534b; stroke-dasharray: 4 3; }
.fx .warn-ln2 { fill: none; stroke: #e5534b; stroke-width: 1.2; }
.fx .flowln { fill: none; stroke: rgba(240, 164, 58, .55); stroke-width: 1.2; stroke-dasharray: 3 6; animation: fxFlow .9s linear infinite; }

.fx .pop { animation: fxPop .5s var(--ease) var(--dl, 0s) both; }
.fx .fade { animation: fxFade .6s ease var(--dl, 0s) both; }
.fx .gx { transform-origin: left center; animation: fxGrowX .9s var(--ease) var(--dl, 0s) both; }
.fx .gy { transform-origin: center bottom; animation: fxGrowY .8s var(--ease) var(--dl, 0s) both; }
.fx .draw { stroke-dasharray: 1; stroke-dashoffset: 1; animation: fxDraw var(--dur, 1s) var(--ease) var(--dl, 0s) forwards; }
.fx .blink { animation: fxBlink 1.6s ease-in-out var(--dl, 0s) infinite; }
.fx .blink2 { animation: fxGrowX .9s var(--ease) var(--dl, 0s) both, fxBlink 1.2s ease-in-out 1.2s infinite; }
.fx .ripple { animation: fxRipple 2s var(--ease) var(--dl, 0s) infinite; }
.fx .spin { transform-box: view-box; transform-origin: var(--ox) var(--oy); animation: cvSpin var(--t, 6s) linear infinite; }
.fx .drop { animation: fxDrop .6s var(--ease) var(--dl, 0s) both; }
.fx .pk { opacity: 0; fill: var(--accent); animation: fxPk 2.2s ease-in var(--dl, 0s) infinite; }
.fx .pk2 { opacity: 0; fill: var(--accent); animation: fxPk2 3s linear infinite; }
.fx .ripple-s { animation: fxRipple 1.2s var(--ease) 3.8s infinite; }
.fx .ripple-h { animation: fxRippleH 2.4s var(--ease) var(--dl, 0s) infinite; }
.fx .fx-mini { transform-origin: center bottom; animation: fxEq2 1s ease-in-out infinite alternate; }
.fx .fx-slide-l { animation: fxSlideL .6s var(--ease) var(--dl, 0s) both; }
.fx .fx-spark { stroke-dasharray: 1; stroke-dashoffset: 1; animation: fxSpark 4.2s var(--ease) .9s infinite; }
.fx .fx-delta { font-size: 11px; font-weight: 600; }
.fx .kb-r { fill: rgba(229, 83, 75, .16); stroke: #e5534b; }
.fx .ln-r { fill: none; stroke: #e5534b; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }
.fx [data-at] { opacity: 0; }
.fx .fx-logs { animation: fxLogs 16s steps(8) infinite; }
@keyframes fxLogs { to { transform: translateY(calc(var(--sy) * -1)); } }
.fx .fx-scan { opacity: .8; animation: fxScan 2.8s linear infinite; }
.fx .fx-hscan { fill: none; stroke: var(--accent); stroke-width: 1.2; animation: fxHScan 4.8s steps(16) infinite; }
.fx .fx-needle { transform-box: view-box; transform-origin: 160px 156px; transform: rotate(var(--to)); animation: fxNeedle 1.6s var(--ease) both; }
.fx .fx-wob { transform-box: view-box; transform-origin: 160px 156px; animation: fxWob 3s ease-in-out 1.6s infinite; }
.fx .fx-kb { animation: fxKanban 5.2s var(--ease-in-out) .8s infinite both; }
.fx .fx-today { animation: fxSway 3s ease-in-out infinite alternate; }
.fx .fx-play { animation: fxPlay 7s linear infinite; }
.fx .fx-wipe { animation: fxWipe 2.6s ease-in-out infinite alternate; }
.fx .fx-blip { opacity: 0; animation: fxBlip 3.6s ease-out infinite; }
.fx .seal { animation: fxSeal .6s var(--ease) var(--dl, 0s) both; }
.fx .fx-exp { animation: fxExport 2.8s var(--ease-in-out) 1s infinite both; }
.fx .fx-leaf { animation: fxLeaf 3.2s ease-in-out infinite; }
.fx .fx-eq2 { transform-origin: center; animation: fxEq2 .9s ease-in-out infinite alternate; }
.fx .fx-type { transform-origin: left center; animation: fxType 2.4s steps(6) infinite; }
.fx .fx-row { animation: fxRow .5s var(--ease) var(--dl, 0s) both; }
.fx .anno { fill: none; stroke: var(--accent); stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; stroke-dasharray: 1; stroke-dashoffset: 1; animation: fxAnno 5s var(--ease) var(--dl, 0s) infinite; }
.fx .anno-t { animation: fxAnnoT 5s var(--ease) 1.2s infinite both; }
.fx .fx-slide { animation: fxSlide .6s var(--ease) var(--dl, 0s) both; }
.fx .fx-move { animation: fxMove 5s var(--ease-in-out) 1.2s infinite both; }
.fx .fx-lit { transform-origin: center; }
.fx-iso { transform: perspective(700px) rotateX(50deg) rotateZ(-30deg) scale(.92); animation: fxIso 9s ease-in-out infinite alternate; }

@keyframes cvSceneIn { from { opacity: 0; transform: scale(1.04); filter: blur(6px); } }
@keyframes fxPop { from { transform: scale(0); opacity: 0; } }
@keyframes fxFade { from { opacity: 0; } }
@keyframes fxGrowX { from { transform: scaleX(0); } }
@keyframes fxGrowY { from { transform: scaleY(0); } }
@keyframes fxDraw { to { stroke-dashoffset: 0; } }
@keyframes fxBlink { 50% { opacity: .25; } }
@keyframes fxRipple { from { transform: scale(1); opacity: .9; } to { transform: scale(2.8); opacity: 0; } }
@keyframes fxDrop { from { transform: translateY(-16px); opacity: 0; } }
@keyframes fxPk { 0% { transform: translate(0, 0); opacity: 0; } 15%, 85% { opacity: 1; } 100% { transform: translate(var(--dx), var(--dy)); opacity: 0; } }
@keyframes fxScan { from { transform: translateY(0); } to { transform: translateY(var(--sy)); } }
@keyframes fxHScan { from { transform: translateX(0); } to { transform: translateX(var(--sx)); } }
@keyframes fxDash { from { stroke-dashoffset: var(--off); } }
@keyframes fxSeg { from { stroke-dasharray: 0 100; } }
@keyframes fxNeedle { from { transform: rotate(-90deg); } }
@keyframes fxWob { 50% { transform: rotate(3deg); } }
@keyframes fxKanban {
    0%, 10% { transform: translate(0, 0); opacity: 0; }
    16% { opacity: 1; }
    30%, 48% { transform: translate(103px, -32px); }
    62%, 86% { transform: translate(206px, -32px); opacity: 1; }
    100% { transform: translate(206px, -32px); opacity: 0; }
}
@keyframes fxSway { to { transform: translateX(10px); } }
@keyframes fxPlay { from { transform: translateX(0); } to { transform: translateX(var(--px)); } }
@keyframes fxWipe { to { transform: translateX(126px); } }
@keyframes fxBlip { 0% { opacity: 0; transform: scale(.4); } 6% { opacity: 1; transform: scale(1.4); } 40% { opacity: .5; transform: scale(1); } 100% { opacity: 0; } }
@keyframes fxSeal { from { transform: scale(2) rotate(-30deg); opacity: 0; } }
@keyframes fxExport { 0% { transform: translateX(0); opacity: 0; } 15% { opacity: 1; } 70% { transform: translateX(52px); opacity: 1; } 100% { transform: translateX(56px); opacity: 0; } }
@keyframes fxLeaf { 0%, 100% { fill: rgba(255, 255, 255, .34); } 12%, 30% { fill: var(--accent); } }
@keyframes fxEq2 { from { transform: scaleY(.2); } }
@keyframes fxType { from { transform: scaleX(0); } }
@keyframes fxRow { from { transform: translateY(-10px); opacity: 0; } }
@keyframes fxAnno { 0% { stroke-dashoffset: 1; opacity: 1; } 30%, 82% { stroke-dashoffset: 0; opacity: 1; } 96%, 100% { stroke-dashoffset: 0; opacity: 0; } }
@keyframes fxAnnoT { 0% { opacity: 0; transform: scale(.6); } 10%, 64% { opacity: 1; transform: scale(1); } 76%, 100% { opacity: 0; transform: scale(1); } }
@keyframes fxSlide { from { transform: translateX(26px); opacity: 0; } }
@keyframes fxMove {
    0%, 12% { transform: translate(0, 0); }
    42%, 62% { transform: translate(130px, 0); }
    92%, 100% { transform: translate(0, 0); }
}
@keyframes fxFlow { to { stroke-dashoffset: -9; } }
@keyframes fxPk2 {
    0% { transform: translate(0, 0); opacity: 0; }
    8% { opacity: 1; }
    35% { transform: translate(var(--dx1), 0); }
    65% { transform: translate(var(--dx1), var(--dy)); }
    94% { opacity: 1; }
    100% { transform: translate(var(--dx2), var(--dy)); opacity: 0; }
}
@keyframes fxRippleH { from { transform: scale(1); opacity: .5; } to { transform: scale(1.9); opacity: 0; } }
@keyframes fxSlideL { from { transform: translateX(-20px); opacity: 0; } }
@keyframes fxSpark { 0% { stroke-dashoffset: 1; opacity: 1; } 45%, 86% { stroke-dashoffset: 0; opacity: 1; } 100% { stroke-dashoffset: 0; opacity: 0; } }
@keyframes fxBarLive { to { transform: scaleY(.62); } }
@keyframes fxIso { to { transform: perspective(700px) rotateX(44deg) rotateZ(-18deg) scale(.92); } }
.cv__text::after { content: ""; display: inline-block; width: 2px; height: 1em; margin-left: 4px; vertical-align: -.12em; background: var(--accent); animation: cvBlink 1s steps(1) infinite; }
.cv__ticks { display: flex; gap: 6px; margin-top: 14px; }
.cv__ticks i { flex: 1; height: 3px; border-radius: 2px; background: var(--line-strong); transition: background .5s var(--ease); }
.cv__ticks i.is-on { background: var(--accent); }
.cv__foot { display: flex; align-items: flex-end; gap: 18px; margin-top: 20px; }
.cv__eq { flex: 1; display: flex; align-items: flex-end; gap: 3px; height: 34px; }
.cv__eq i { flex: 1; height: 100%; background: rgba(255, 255, 255, .13); transform-origin: bottom; animation: cvEq 1.4s ease-in-out infinite alternate; animation-delay: calc(var(--i) * -.17s); }
.cv__eq i:nth-child(3n) { animation-duration: 1.1s; }
.cv__eq i:nth-child(4n + 1) { animation-duration: 1.8s; }
.cv__eq i:nth-child(7n + 2) { background: var(--accent); opacity: .75; }
.cv__tc { font-family: var(--mono); font-size: 11px; letter-spacing: .12em; color: var(--muted); }

@keyframes cvSpin { to { transform: rotate(360deg); } }
@keyframes cvPulse { 50% { opacity: .25; } }
@keyframes cvBlink { 50% { opacity: 0; } }
@keyframes cvRipple { from { transform: scale(1); opacity: .9; } to { transform: scale(3.2); opacity: 0; } }
@keyframes cvEq { from { transform: scaleY(.12); } to { transform: scaleY(1); } }

.monitor { max-width: 1120px; margin: 0 auto; }
.monitor__frame {
    position: relative;
    aspect-ratio: 16 / 10;
    border-radius: 18px;
    overflow: hidden;
    background: #0b0b0c;
    border: 10px solid #1c1c1f;
    box-shadow: 0 0 0 1px var(--line-strong), 0 50px 100px -30px rgba(0, 0, 0, .9);
}
.monitor__frame iframe { position: absolute; top: 0; left: 0; border: 0; transform-origin: 0 0; background: #0b0b0c; }
.monitor__stand { width: 22%; height: 46px; margin: 0 auto; background: linear-gradient(180deg, #1c1c1f, #121214); clip-path: polygon(18% 0, 82% 0, 100% 100%, 0 100%); }

.gallery__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.gallery__grid--pair { grid-template-columns: repeat(2, 1fr); }
.shot { display: flex; flex-direction: column; gap: 14px; }
.shot--wide { grid-column: span 2; grid-row: span 2; }
.shot__img {
    position: relative;
    display: block;
    flex: 1;
    min-height: 0;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    border: 1px solid var(--line-strong);
    border-radius: 10px;
    background: #141416;
    transition: border-color .4s;
}
.shot__img img { width: 100%; height: 100%; object-fit: cover; object-position: top left; transition: transform .9s var(--ease); }
.shot__img::after {
    content: "";
    position: absolute;
    inset: 0;
    background: rgba(11, 11, 12, .35);
    opacity: 0;
    transition: opacity .4s;
}
.shot__meta { display: flex; align-items: baseline; gap: 10px; font-size: 14px; }
.shot__meta i { font-style: normal; font-family: var(--mono); font-size: 12px; color: var(--muted); transition: color .3s; }
.shot__meta b { font-weight: 700; white-space: nowrap; }
.shot__meta em { font-style: normal; color: var(--muted); font-size: 13px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.shot:hover .shot__img { border-color: rgba(255, 255, 255, .4); }
.shot:hover .shot__img img { transform: scale(1.04); }
.shot:hover .shot__meta i { color: var(--accent); }

.lightbox {
    position: fixed;
    inset: 0;
    z-index: 200;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 18px;
    padding: 60px clamp(16px, 6vw, 90px) 40px;
    background: rgba(8, 8, 9, .94);
    opacity: 0;
    visibility: hidden;
    transition: opacity .4s var(--ease), visibility .4s;
}
.lightbox.is-open { opacity: 1; visibility: visible; }
.lightbox__img {
    max-width: 100%;
    max-height: calc(100vh - 160px);
    border: 1px solid var(--line-strong);
    border-radius: 8px;
    transform: scale(.96);
    transition: transform .5s var(--ease), opacity .3s;
}
.lightbox.is-open .lightbox__img { transform: none; }
.lightbox__img.is-swapping { opacity: 0; }
.lightbox__cap { font-size: 14px; color: #c8c8cc; text-align: center; }
.lightbox__cap i { font-style: normal; font-family: var(--mono); color: var(--accent); margin-right: 10px; }
.lightbox__btn {
    position: absolute;
    display: grid;
    place-items: center;
    width: 46px;
    height: 46px;
    border: 1px solid var(--line-strong);
    border-radius: 50%;
    color: var(--text);
    font-size: 20px;
    line-height: 1;
    transition: background-color .3s, border-color .3s;
}
.lightbox__btn:hover { background: rgba(255, 255, 255, .08); border-color: rgba(255, 255, 255, .4); }
.lightbox__close { top: 18px; right: 18px; }
.lightbox__prev { left: clamp(10px, 2vw, 28px); top: 50%; margin-top: -23px; }
.lightbox__next { right: clamp(10px, 2vw, 28px); top: 50%; margin-top: -23px; }

.modules__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.module {
    --rx: 0deg; --ry: 0deg;
    padding: 32px 28px;
    border-radius: var(--radius);
    background: var(--line);
    transform: perspective(900px) rotateX(var(--rx)) rotateY(var(--ry));
    transition: transform .6s var(--ease);
}
.module.is-tilting { transition: transform .12s linear; }
.module__num { display: inline-block; font-family: var(--mono); font-size: 12px; color: var(--accent); padding: 3px 8px; border: 1px solid var(--line-strong); border-radius: 4px; margin-bottom: 22px; }
.module h3 { font-size: 21px; font-weight: 800; margin-bottom: 10px; }
.module p { color: var(--muted); font-size: 15px; margin-bottom: 18px; }
.module li { position: relative; padding-left: 18px; font-size: 14px; color: #c8c8cc; }
.module li + li { margin-top: 6px; }
.module li::before { content: ""; position: absolute; left: 0; top: .7em; width: 8px; height: 1px; background: var(--accent); }

.next { padding-top: 40px; }
.next__link {
    position: relative;
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 8px 30px;
    padding: clamp(36px, 5vw, 60px) 0;
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    overflow: hidden;
}
.next__label { font-family: var(--mono); font-size: 12px; letter-spacing: .24em; color: var(--muted); grid-column: 1 / -1; }
.next__name { font-size: clamp(2.4rem, 6vw, 5rem); font-weight: 900; line-height: 1.1; transition: transform .6s var(--ease), color .4s; }
.next__name em { font-style: normal; font-size: .5em; color: var(--accent); }
.next__brief { color: var(--muted); grid-column: 1; }
.next__arrow { grid-row: 2 / 4; grid-column: 2; align-self: center; position: relative; width: 84px; height: 84px; border-radius: 50%; border: 1px solid var(--line-strong); transition: background-color .4s, border-color .4s, transform .6s var(--ease); }
.next__arrow i { position: absolute; top: 50%; left: 50%; width: 26px; height: 2px; margin: -1px 0 0 -13px; background: currentColor; }
.next__arrow i::after { content: ""; position: absolute; right: 0; top: -5px; width: 10px; height: 10px; border-top: 2px solid currentColor; border-right: 2px solid currentColor; transform: rotate(45deg); }
.next__thumb {
    position: absolute;
    right: 140px;
    top: 50%;
    width: 300px;
    border: 1px solid var(--line-strong);
    border-radius: 10px;
    overflow: hidden;
    opacity: 0;
    transform: translate(24px, -50%) scale(.92);
    transition: opacity .5s, transform .7s var(--ease);
    pointer-events: none;
    box-shadow: 0 30px 60px -20px rgba(0, 0, 0, .9);
}
.next__link:hover .next__name { transform: translateX(16px); }
.next__link:hover .next__arrow { background: var(--text); border-color: var(--text); color: #0b0b0c; transform: rotate(-45deg); }
.next__link:hover .next__thumb { opacity: 1; transform: translate(0, -50%) scale(1); }

/* ---------- 关于页 ---------- */

.page-hero { position: relative; padding: calc(var(--header-h) + 80px) 0 clamp(60px, 8vw, 100px); overflow: hidden; }
.page-hero__bg { position: absolute; inset: 0; opacity: .8; }
.page-hero__bg::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 50%, var(--bg)); }
.page-hero__inner { position: relative; z-index: 1; }
.page-hero__title { font-size: clamp(2.4rem, 6vw, 4.6rem); line-height: 1.12; font-weight: 900; letter-spacing: -.02em; margin-bottom: 28px; }
.page-hero__title > span, .page-hero__title > em { display: block; }
.page-hero__lead { max-width: 52em; color: #b4b4ba; font-size: clamp(15px, 1.4vw, 18px); }
.about-mission { padding-top: 40px; }

.goals__grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.goal { position: relative; padding: 34px 26px 40px; border-radius: var(--radius); background: var(--line); overflow: hidden; }
.goal__num { font-size: 56px; font-weight: 900; line-height: 1; color: transparent; -webkit-text-stroke: 1px var(--line-strong); display: block; margin-bottom: 26px; transition: color .4s; }
.goal:hover .goal__num { color: var(--text); -webkit-text-stroke-color: transparent; }
.goal h3 { font-size: 21px; font-weight: 800; margin-bottom: 10px; }
.goal p { color: var(--muted); font-size: 15px; }
.goal__line { position: absolute; left: 0; bottom: 0; height: 3px; width: 100%; background: var(--grad); transform: scaleX(0); transform-origin: left; transition: transform .7s var(--ease); }
.goal:hover .goal__line { transform: scaleX(1); }

.relation__list { border-top: 1px solid var(--line); }
.relation__row {
    position: relative;
    display: grid;
    grid-template-columns: 70px 1.1fr 1fr 1.6fr 50px;
    gap: 20px;
    align-items: center;
    padding: 26px 10px;
    border-bottom: 1px solid var(--line);
    overflow: hidden;
    isolation: isolate;
}
.relation__row::before {
    content: "";
    position: absolute;
    inset: 0;
    z-index: -1;
    background: rgba(255, 255, 255, .03);
    transform: scaleY(0);
    transform-origin: bottom;
    transition: transform .5s var(--ease);
}
.relation__row:not(.relation__row--static):hover::before { transform: scaleY(1); }
.relation__code { font-family: var(--mono); font-size: 14px; color: var(--accent); }
.relation__name { font-size: 20px; font-weight: 800; }
.relation__name em { font-style: normal; color: var(--accent); font-size: 15px; margin-left: 4px; }
.relation__users { font-size: 14px; color: #c8c8cc; }
.relation__value { font-size: 14px; color: var(--muted); }
.relation__arrow i { display: block; width: 12px; height: 12px; border-top: 2px solid var(--accent); border-right: 2px solid var(--accent); transform: rotate(45deg); transition: transform .4s var(--ease); }
.relation__row:hover .relation__arrow i { transform: translateX(8px) rotate(45deg); }

.host { padding-top: 0; }
.host__card {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: flex-end;
    gap: 30px;
    padding: clamp(32px, 5vw, 60px);
    border-radius: 28px;
    background: var(--line-strong);
}
.host__copy h2 { font-size: clamp(1.6rem, 3.4vw, 2.6rem); font-weight: 900; margin-bottom: 8px; }
.host__copy p:last-child { color: var(--muted); }
.host__meta { display: flex; flex-direction: column; gap: 6px; text-align: right; font-size: 14px; }
.host__meta span { font-family: var(--mono); font-size: 11px; letter-spacing: .2em; color: var(--muted); }
.host__meta a { color: var(--c1); }
.host__meta .host__gap { margin-top: 14px; }
.site-footer__mail { display: inline-flex; align-items: center; gap: 10px; margin-top: 18px; font-family: var(--mono); font-size: 14px; color: var(--text); transition: color .3s; }
.site-footer__mail span { font-size: 11px; letter-spacing: .14em; padding: 3px 8px; border: 1px solid var(--line-strong); border-radius: 4px; color: var(--muted); }
.site-footer__mail:hover { color: var(--brand); }
.cta__mail { margin-top: 28px; font-size: 14px; color: var(--muted); }
.cta__mail a { font-family: var(--mono); color: var(--text); border-bottom: 1px solid var(--line-strong); transition: color .3s, border-color .3s; }
.cta__mail a:hover { color: var(--brand); border-color: var(--brand); }

/* ==========================================================================
   动画状态（仅在 JS 可用且未开启“减少动态效果”时隐藏初始态）
   ========================================================================== */

html.js:not(.rm) [data-reveal] {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 1s var(--ease), transform 1.1s var(--ease), clip-path 1.3s var(--ease-in-out);
    transition-delay: var(--d, 0s);
}
html.js:not(.rm) [data-reveal="zoom"] { transform: scale(.9) translateY(30px); }
html.js:not(.rm) [data-reveal="clip"] { opacity: 1; transform: none; clip-path: inset(0 100% 0 0 round 22px); }
html.js:not(.rm) [data-reveal].is-in { opacity: 1; transform: none; }
html.js:not(.rm) [data-reveal="clip"].is-in { clip-path: inset(0 0 0 0 round 22px); }

html.js:not(.rm) [data-reveal-group] > * {
    opacity: 0;
    transform: translateY(18px) scale(.96);
    transition: opacity .6s var(--ease), transform .7s var(--ease);
    transition-delay: calc(var(--d, 0s) + var(--i, 0) * 70ms);
}
html.js:not(.rm) [data-reveal-group].is-in > * { opacity: 1; transform: none; }

html.js:not(.rm) [data-split]:not(.is-split) { opacity: 0; }
.split-char { display: inline-block; white-space: pre; }
html.js:not(.rm) .split-char {
    opacity: 0;
    filter: blur(10px);
    transform: translateY(.6em) rotate(6deg);
    transition: opacity .7s var(--ease), transform .9s var(--ease), filter .7s var(--ease);
    transition-delay: calc(var(--d, 0s) + var(--ci) * 32ms);
}
html.js:not(.rm) .is-in .split-char, html.js:not(.rm) .is-in.split-char { opacity: 1; filter: blur(0); transform: none; }

/* 首屏内容等待预加载结束 */
html.js:not(.rm):not(.is-loaded) .hero [data-reveal],
html.js:not(.rm):not(.is-loaded) .p-hero [data-reveal],
html.js:not(.rm):not(.is-loaded) .page-hero [data-reveal] { transition-delay: 0s; }

/* ==========================================================================
   响应式
   ========================================================================== */

@media (max-width: 1180px) {
    .brand__tag { display: none; }
    .nav__link { padding: 10px 10px; }
    .pains__grid, .goals__grid { grid-template-columns: repeat(2, 1fr); }
    .pains__grid > :last-child:nth-child(3n + 1) { grid-column: auto; }
    .pains__grid > :last-child:nth-child(odd) { grid-column: 1 / -1; }
    .suite { --pipe: 40px; }
    .suite__ps .suite__duty { display: none; }
    .suite__mod { padding: 16px 14px; }
}

@media (max-width: 960px) {
    :root { --header-h: 66px; }
    .nav { display: none; }
    .burger { display: block; }
    .brand__logo { height: 36px; }

    .hero { padding-bottom: 120px; }
    .hero__inner, .p-hero__grid, .arch__grid, .caps__grid { grid-template-columns: 1fr; }
    .hero__visual { max-width: 640px; margin: 20px auto 0; width: 100%; }
    .float-chip--1 { left: 0; }
    .float-chip--3 { left: 0; }
    .float-chip--2 { right: 0; }

    .metrics { grid-template-columns: repeat(2, 1fr); }
    .metric:nth-child(3) { padding-left: 0; border-left: 0; }
    .metric:nth-child(n + 3) { border-top: 1px solid var(--line); }

    .stack__card {
        position: relative;
        top: auto;
        grid-template-columns: 1fr;
        min-height: 0;
        margin-bottom: 24px;
        transform: none !important;
        filter: none !important;
    }
    .stack__media { order: -1; }

    .flow { height: auto; padding: clamp(80px, 12vw, 120px) 0; }
    .flow__sticky { position: relative; height: auto; display: block; overflow: visible; }
    .flow__svg, .flow__dot { display: none; }
    .flow__nodes { grid-template-columns: 1fr; gap: 0; padding: 0 0 0 30px; border-left: 1px dashed var(--line-strong); margin-left: 24px; }
    .flow__node { text-align: left; padding: 0 0 36px 30px; position: relative; }
    .flow__badge { position: absolute; left: -54px; top: -6px; margin: 0; }
    .flow__node p { margin: 0; }

    .orbit { max-width: 420px; }
    .suite__ps .suite__live { display: none; }
    .modules__grid, .gallery__grid { grid-template-columns: repeat(2, 1fr); }
    .site-footer__grid { grid-template-columns: 1fr 1fr; }
    .site-footer__brand { grid-column: 1 / -1; }
    .relation__row { grid-template-columns: 56px 1fr 30px; }
    .relation__users, .relation__value { grid-column: 2; }
    .relation__arrow { grid-row: 1; grid-column: 3; }
    .next__thumb { display: none; }
    .caps__visual { display: none; }
    .caps__list b { color: var(--text); }
}

@media (max-width: 860px) {
    .suite__row { grid-template-columns: 1fr; }
    .suite__hub { flex-wrap: wrap; gap: 14px 18px; }
    .suite__chips { justify-content: flex-start; width: 100%; }
    .suite__row--rise { height: 44px; }
    .suite__row--rise > :not(:nth-child(3)) { display: none; }
    .suite__shield { padding: 20px 16px 16px; }
    .suite__ps { position: relative; top: auto; left: auto; width: fit-content; max-width: 100%; margin: 0 auto 18px; transform: none; }
    html.js:not(.rm) .suite.is-built .suite__ps { animation-name: suiteIn; }
    .suite__mod { grid-template-areas: "code name" "code duty" "live live"; gap: 0 12px; padding: 14px 16px; }
    .suite__live { margin-top: 10px; }
    .suite__pipe { height: 36px; }
    .suite__pipe::before { top: 6px; bottom: 6px; left: 50%; right: auto; width: 1px; height: auto; }
    .suite__pipe::after { top: auto; bottom: 6px; right: auto; left: 50%; margin-left: -3px; transform: rotate(135deg); }
    .suite__pipe--dash::before { width: 0; background: none; border-top: 0; border-left: 1px dashed var(--line-strong); }
    .suite .suite__pipe--dash.is-hot::before { border-left-color: var(--hot); }
    .suite__pipe i { top: auto; left: 50%; margin: 0 0 0 -2.5px; animation-name: suiteDown; }
    .suite__row--bus { height: 60px; }
    .suite__row--bus > :not(:nth-child(4)):not(.suite__busline) { display: none; }
    .suite__busline { left: 0; right: 0; background: none; }
    .suite .suite__busline.is-hot { background: none; }
    .suite__busline i { display: none; }
    .suite__caption { flex-wrap: wrap; gap: 8px 14px; padding: 14px 16px; }
    .suite__caption p { flex-basis: 100%; order: 3; font-size: 14px; }
}

@keyframes suiteDown { from { top: 0; opacity: 0; } 15%, 85% { opacity: 1; } to { top: calc(100% - 6px); opacity: 0; } }

@media (max-width: 640px) {
    .section { padding: 80px 0; }
    .float-chip { font-size: 11px; padding: 5px 10px 5px 5px; }
    .float-chip b { width: 22px; height: 22px; font-size: 9px; }
    .float-chip--2, .float-chip--3 { display: none; }
    .pains__grid, .goals__grid, .modules__grid, .gallery__grid { grid-template-columns: 1fr; }
    .shot--wide { grid-column: auto; grid-row: auto; }
    .lightbox__prev, .lightbox__next { top: auto; bottom: 18px; margin-top: 0; }
    .arch__list li { grid-template-columns: 1fr; gap: 4px; }
    .orbit__node { width: 70px; height: 70px; margin: -35px -35px 0 0; }
    .orbit__node b { font-size: 15px; }
    .orbit__node em { display: none; }
    .site-footer__grid { grid-template-columns: 1fr; gap: 30px; }
    .site-footer__bottom { flex-direction: column; }
    .next__arrow { width: 56px; height: 56px; }
    .stack__bignum { display: none; }
    .host__meta { text-align: left; }
}

/* 减少动态效果 */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; scroll-behavior: auto !important; }
    .grain, .device__scan { display: none; }
}