/* 产品总览与产品线枢纽 v1.8.0
   内容签名：三类业务系统 + 财务智能体贯穿 + 财务数智底座支撑。
   动效只用于表达能力流动；reduced-motion 下完整静止。 */

.ph-page {
    --ph-hero-gradient: var(--ztc-banner-authority);
    --ph-line: rgba(97, 204, 240, .72);
    --ph-line-soft: rgba(97, 204, 240, .22);
    --ph-ink-on-dark: rgba(255, 255, 255, .86);
    overflow: clip;
    background: var(--ztc-white);
}
.ph-page a:focus-visible,
.ph-page button:focus-visible {
    outline: 3px solid var(--ztc-brand-cyan);
    outline-offset: 4px;
}
.ph-page [id] { scroll-margin-top: 124px; }
.ph-kicker {
    margin: 0 0 16px;
    color: var(--ztc-brand-cyan);
    font-size: 13px; /* 2026-09-02 全站眉标规范：13px/700/.14em/大写（原 12px/.18em） */
    font-weight: 700;
    letter-spacing: .14em;
    line-height: 1.5;
    text-transform: uppercase;
}
.ph-kicker--dark { color: var(--ztc-action); }
/* 2026-09-02 Haning：banner 眉标与大标题间距拉开（章节内 kicker 仍按原节奏） */
.ph-hero .ph-kicker, .ph-line-hero .ph-kicker { margin-bottom: 24px; }

/* 总览首屏 */
.ph-hero,
.ph-line-hero {
    position: relative;
    overflow: hidden;
    color: var(--ztc-white);
}
.ph-hero { background: var(--ztc-banner-luminous); }
/* 2026-09-03 Haning 定：五个系统统领页 banner 换权威深色，与产品总览页 banner / CTA 召唤卡同底 */
.ph-line-hero { background: var(--ztc-banner-authority); }
.ph-hero { min-height: 760px; padding: 178px 0 96px; }
.ph-hero-field,
.ph-line-field {
    position: absolute;
    inset: auto -8% -22% auto;
    width: min(70vw, 980px);
    height: auto;
    opacity: .2;
    pointer-events: none;
}
.ph-dna-field { fill: var(--ztc-brand-cyan); stroke: var(--ztc-brand-cyan); stroke-width: 2; }
.ph-dna-field path { fill: none; stroke-linecap: round; stroke-dasharray: 3 8 16 8; animation: ph-flow 14s linear infinite; }
@keyframes ph-flow { to { stroke-dashoffset: -105; } }
.ph-hero-layout {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: minmax(0, .92fr) minmax(520px, 1.08fr);
    gap: 70px;
    align-items: center;
}
.ph-hero-copy { max-width: 590px; }
.ph-hero h1,
.ph-line-hero h1 {
    margin: 0;
    color: var(--ztc-white);
    font-size: var(--ztc-banner-h1-feature);
    font-weight: 700;
    letter-spacing: -.01em; /* 2026-09-02 规范：与咨询/产品详情一致（原 -.035em），行高 1.15 */
    line-height: 1.15;
}
/* 2026-09-02 规范：产品线一级页介绍小字与咨询统领页同档 17px/1.75/620px（原 banner-lead 21px） */
.ph-line-hero .ph-hero-lead { font-size: 17px; line-height: 1.75; max-width: 620px; }
.ph-hero-lead {
    max-width: 690px;
    margin: 26px 0 0;
    color: var(--ph-ink-on-dark);
    font-size: var(--ztc-banner-lead);
    line-height: 1.85;
    text-wrap: pretty;
}
.ph-phrase { white-space: nowrap; }
.ph-hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 34px; }
.ph-hero-actions a { min-height: 48px; display: inline-flex; align-items: center; justify-content: center; }
.ph-hero-facts {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
    margin: 46px 0 0;
    padding-top: 24px;
    border-top: 1px solid rgba(255, 255, 255, .18);
}
.ph-hero-facts div { padding-right: 14px; }
.ph-hero-facts dt {
    color: var(--ztc-white);
    font-family: var(--ztc-serif);
    font-size:var(--ztc-fs-h2);
    font-weight: 700;
    line-height: 1;
}
.ph-hero-facts dd { margin-top: 8px; color: rgba(255, 255, 255, .64); font-size: 12px; line-height: 1.45; }

/* 首屏产品架构：平面层级，不把五个枢纽误画成五条等权产品线 */
.ph-architecture {
    position: relative;
    padding: 24px;
    border: 1px solid rgba(255, 255, 255, .22);
    background: rgba(4, 27, 50, .28);
}
.ph-architecture::before,
.ph-line-map::before {
    position: absolute;
    top: -1px;
    left: 24px;
    width: 76px;
    height: 3px;
    background: var(--ztc-brand-cyan);
    content: "";
}
.ph-architecture-label {
    margin: 0 0 12px;
    color: rgba(255, 255, 255, .74);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: .16em;
}
.ph-architecture-business { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.ph-architecture-card {
    min-height: 164px;
    padding: 17px 15px;
    border: 1px solid rgba(255, 255, 255, .17);
    background: rgba(0, 103, 180, .2);
    transition: transform .22s ease, border-color .22s ease, background-color .22s ease;
}
.ph-architecture-card:hover { transform: translateY(-3px); border-color: var(--ztc-brand-cyan); background: rgba(0, 103, 180, .34); }
.ph-architecture-icon,
.ph-line-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--ztc-brand-cyan);
}
.ph-architecture-card strong { display: block; margin-top: 19px; color: var(--ztc-white); font-size: 16px; line-height: 1.4; }
.ph-architecture-card small { display: block; min-height: 34px; margin-top: 6px; color: rgba(255, 255, 255, .74); font-size: 11px; line-height: 1.5; }
.ph-architecture-card em {
    display: block;
    margin-top: 12px;
    color: var(--ztc-brand-cyan);
    font-size: 11px;
    font-style: normal;
    font-weight: 700;
}
.ph-architecture-flow { display: block; width: 100%; height: 54px; color: var(--ztc-brand-cyan); }
.ph-architecture-flow path { fill: none; stroke: currentColor; stroke-width: 1.5; stroke-dasharray: 3 8 20 8; stroke-linecap: round; animation: ph-flow 11s linear infinite; }
.ph-architecture-flow circle { fill: currentColor; }
.ph-architecture-rail {
    display: grid;
    grid-template-columns: 94px minmax(150px, 1fr) minmax(190px, 1.3fr) 24px;
    gap: 14px;
    align-items: center;
    min-height: 64px;
    padding: 11px 16px;
    border: 1px solid rgba(255, 255, 255, .2);
    color: var(--ztc-white);
    transition: border-color .2s ease, background-color .2s ease;
}
.ph-architecture-rail + .ph-architecture-rail { margin-top: 9px; }
.ph-architecture-rail--agent { background: rgba(0, 142, 211, .18); }
.ph-architecture-rail--foundation { background: rgba(255, 255, 255, .07); }
.ph-architecture-rail:hover { border-color: var(--ztc-brand-cyan); background: rgba(0, 103, 180, .34); }
.ph-rail-role { color: rgba(255, 255, 255, .74); font-size: 11px; font-weight: 700; letter-spacing: .12em; }
.ph-rail-main { display: inline-flex; align-items: center; gap: 9px; }
.ph-rail-main strong { font-size:16px; }
.ph-rail-signal { color: rgba(255, 255, 255, .76); font-size: 12px; }
.ph-rail-arrow { color: var(--ztc-brand-cyan); font-size: 20px; }

/* 页内导航 */
/* 页内导航：悬浮胶囊（与洞察 .isx-subnav 同款——毛玻璃圆角 pill，不占布局高度、悬浮于内容之上） */
.ph-local-nav {
    position: sticky;
    top: 86px;
    z-index: 85;
    height: 0;
    transform: translateY(18px);
}
/* 胶囊不占布局高度，给紧随其后的首个模块补出视觉间距 */
.ph-local-nav + * { margin-top: 44px; }
.ph-local-nav .ztc-container { display: block; }
.ph-local-nav-wrap {
    display: flex;
    align-items: center;
    width: max-content;
    max-width: calc(100% - 32px);
    margin-inline: auto;
    padding: 6px;
    border: 1px solid var(--ztc-border);
    border-radius: 999px;
    background: rgba(255, 255, 255, .94);
    box-shadow: 0 12px 34px rgba(10, 43, 76, .13);
    -webkit-backdrop-filter: blur(15px);
    backdrop-filter: blur(15px);
}
.ph-local-nav-track { display: flex; min-width: 0; overflow-x: auto; scrollbar-width: none; }
.ph-local-nav-track::-webkit-scrollbar { display: none; }
.ph-local-nav a {
    display: inline-flex;
    align-items: center;
    min-height: 42px;
    padding: 8px 17px;
    border-radius: 999px;
    color: var(--ztc-text-muted);
    font-size: 13px;
    font-weight: 650;
    white-space: nowrap;
    transition: color .2s ease, background .2s ease;
}
.ph-local-nav a:hover { color: var(--ztc-action); background: rgba(0, 142, 211, .07); }
/* 枢纽入口 + 当前态（对齐 isx-subnav-home / is-active） */
.ph-local-nav-home {
    color: var(--ztc-action) !important;
    border-right: 1px solid var(--ztc-border);
    border-radius: 999px 0 0 999px !important;
}
.ph-local-nav a.is-active { color: #fff; background: var(--ztc-action); }
.ph-local-nav-home.is-active { color: #fff !important; }

/* 共用章节 */
.ph-section { padding: 104px 0; }
.ph-section-head { max-width: 760px; margin-bottom: 48px; }
.ph-section-head h2,
.ph-line-intro h2,
.ph-group-head h2,
.ph-cta h2 {
    margin: 0;
    color: var(--ztc-navy-deep);
    font-size: clamp(2rem, 3.5vw, 2.8rem);
    letter-spacing: -.025em;
    text-wrap: balance;
}
.ph-section-head > p:last-child {
    max-width: 720px;
    margin: 18px 0 0;
    color: var(--ztc-text-muted);
    font-size: 16px;
    line-height: 1.9;
    text-wrap: pretty;
}
.ph-section-head--split {
    display: grid;
    grid-template-columns: minmax(0, 1.3fr) minmax(280px, .7fr);
    gap: 70px;
    align-items: end;
    max-width: none;
}
.ph-section-head--split > p { margin: 0 0 8px; }
.ph-business-lines { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.ph-line-card {
    display: flex;
    flex-direction: column;
    min-height: 382px;
    padding: 28px;
    border: 1px solid var(--ztc-border);
    background: var(--ztc-white);
    color: var(--ztc-text);
    transition: transform .24s ease, border-color .24s ease, box-shadow .24s ease;
}
.ph-line-card:hover,
.ph-line-product-card:hover,
.ph-product-card:hover { transform: translateY(-4px); border-color: rgba(0, 142, 211, .44); box-shadow: 0 14px 30px rgba(10, 43, 76, .1); }
.ph-line-card-top { display: flex; align-items: center; justify-content: space-between; }
.ph-line-card .ph-line-icon,
.ph-support-card .ph-line-icon {
    width: 46px;
    height: 46px;
    border: 1px solid rgba(0, 103, 180, .24);
    background: var(--ztc-tint-info-bg);
}
.ph-line-count { color: var(--ztc-action); font-size: 12px; font-weight: 700; }
.ph-line-card > p,
.ph-support-identity p { margin: 28px 0 7px; color: var(--ztc-text-muted); font-size: 11px; letter-spacing: .12em; text-transform: uppercase; }
.ph-line-card h3,
.ph-support-card h3 { margin: 0; color: var(--ztc-navy-deep); font-size: 24px; }
.ph-line-groups { display: flex; gap: 7px; flex-wrap: wrap; margin-top: 28px; }
.ph-line-groups span {
    padding: 5px 9px;
    border: 1px solid var(--ztc-border);
    color: var(--ztc-text-muted);
    font-size: 12px;
}
.ph-card-link { display: inline-flex; gap: 8px; align-items: center; margin-top: auto; padding-top: 30px; color: var(--ztc-action); font-size: 14px; font-weight: 700; }
.ph-support-lines { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; margin-top: 22px; }
.ph-support-card {
    display: grid;
    grid-template-columns: minmax(210px, .85fr) minmax(240px, 1.15fr);
    gap: 28px;
    align-items: center;
    padding: 28px;
    border: 1px solid var(--ztc-border);
    background: var(--ztc-bg);
    transition: border-color .22s ease, background-color .22s ease;
}
.ph-support-card:hover { border-color: rgba(0, 142, 211, .44); background: var(--ztc-white); }
.ph-support-identity { display: flex; gap: 16px; align-items: center; }
.ph-support-identity p { margin: 0 0 4px; }
.ph-support-copy { color: var(--ztc-text-muted); font-size: 14px; line-height: 1.75; }
.ph-support-card .ph-card-link { grid-column: 2; padding-top: 0; }

/* 完整产品目录 */
.ph-catalog { border-top: 1px solid var(--ztc-border); background: var(--ztc-bg); }
.ph-catalog-tools {
    display: grid;
    grid-template-columns: minmax(280px, .72fr) minmax(0, 1.28fr);
    gap: 24px 32px;
    align-items: end;
    margin-bottom: 30px;
}
.ph-search label {
    display: block;
    margin-bottom: 8px;
    color: var(--ztc-navy-deep);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: .04em;
}
.ph-search-control { position: relative; }
.ph-search-control > span {
    position: absolute;
    top: 50%;
    left: 16px;
    display: grid;
    color: var(--ztc-action);
    pointer-events: none;
    transform: translateY(-50%);
}
.ph-search-control input {
    width: 100%;
    min-height: 48px;
    padding: 10px 44px;
    border: 1px solid var(--ztc-border);
    border-radius: 4px;
    outline: 0;
    background: var(--ztc-white);
    color: var(--ztc-navy-deep);
    font: 14px/1.5 var(--ztc-sans);
    transition: border-color .2s ease, box-shadow .2s ease;
}
.ph-search-control input::placeholder { color: var(--ztc-text-muted); }
.ph-search-control input:focus {
    border-color: var(--ztc-action);
    box-shadow: 0 0 0 3px rgba(0, 142, 211, .12);
}
.ph-filter { display: flex; gap: 8px; flex-wrap: wrap; justify-content: flex-end; }
.ph-filter button {
    min-height: 44px;
    padding: 9px 17px;
    border: 1px solid var(--ztc-border);
    border-radius: 999px;
    background: var(--ztc-white);
    color: var(--ztc-text-muted);
    cursor: pointer;
    font-family: var(--ztc-sans);
    font-size: 13px;
    font-weight: 600;
}
.ph-filter button span { margin-left: 4px; color: var(--ztc-action); font-variant-numeric: tabular-nums; }
.ph-filter button:hover { border-color: var(--ztc-action); color: var(--ztc-action); }
.ph-filter button.is-active { border-color: var(--ztc-action); background: var(--ztc-action); color: var(--ztc-white); }
.ph-filter button.is-active span { color: var(--ztc-white); }
.ph-product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.ph-product-card {
    position: relative;
    display: flex;
    flex-direction: column;
    min-height: 238px;
    padding: 22px;
    border: 1px solid var(--ztc-border);
    background: var(--ztc-white);
    transition: transform .22s ease, border-color .22s ease, box-shadow .22s ease;
}
.ph-product-card[hidden] { display: none !important; }
.ph-product-context { padding-right: 48px; color: var(--ztc-action); font-size: 11px; font-weight: 700; line-height: 1.5; }
.ph-product-mark {
    position: absolute;
    top: 17px;
    right: 17px;
    display: grid;
    width: 40px;
    height: 40px;
    place-items: center;
    border: 1px solid rgba(0, 103, 180, .13);
    background: rgba(244, 250, 253, .84);
}
.ph-product-mark .ztc-product-line-mark { width: 30px; height: 30px; }
.ph-product-card strong { margin-top: 16px; color: var(--ztc-navy-deep); font-size: 18px; line-height: 1.45; }
.ph-product-card p { margin: 10px 0 0; color: var(--ztc-text-muted); font-size: 13px; line-height: 1.72; }
.ph-product-enter { margin-top: auto; padding-top: 20px; color: var(--ztc-action); font-size: 13px; font-weight: 700; }
.ph-empty {
    margin: 0;
    padding: 30px;
    border: 1px dashed rgba(0, 142, 211, .3);
    background: rgba(255, 255, 255, .68);
    color: var(--ztc-text-muted);
    text-align: center;
}
.ph-filter-status { margin: 24px 0 0; color: var(--ztc-text-muted); font-size: 12px; text-align: right; }

/* 产品线首屏 */
.ph-line-hero { min-height: 670px; padding: 174px 0 86px; }
.ph-line-field { inset: auto -5% -34% auto; width: min(72vw, 1040px); }
.ph-line-hero-layout {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: minmax(0, 1.12fr) minmax(360px, .72fr);
    gap: 90px;
    align-items: center;
}
.ph-line-hero-copy { max-width: 710px; }
.ph-line-signal { margin: 18px 0 0; color: var(--ztc-brand-cyan); font-size:14px; font-weight: 700; letter-spacing: .08em; }
.ph-line-map {
    position: relative;
    padding: 26px;
    border: 1px solid rgba(255, 255, 255, .22);
    background: rgba(255, 255, 255, .04);
}
.ph-line-map-head { display: flex; gap: 15px; align-items: center; padding-bottom: 20px; border-bottom: 1px solid rgba(255, 255, 255, .14); }
.ph-line-map-head .ph-line-icon { width: 46px; height: 46px; border: 1px solid rgba(255, 255, 255, .22); }
.ph-line-map-head span { color: rgba(255, 255, 255, .56); font-size: 11px; letter-spacing: .12em; }
.ph-line-map-head strong { display: block; margin-top: 3px; color: var(--ztc-white); font-size: 16px; }
.ph-line-map ol { margin: 15px 0 0; padding: 0; list-style: none; }
.ph-line-map li + li { border-top: 1px solid rgba(255, 255, 255, .1); }
.ph-line-map li a {
    display: grid;
    grid-template-columns: 34px 1fr auto;
    gap: 10px;
    align-items: center;
    min-height: 60px;
    color: var(--ztc-white);
}
.ph-line-map li a > span { color: var(--ztc-brand-cyan); font-size: 11px; font-weight: 700; }
.ph-line-map li strong { font-size: 14px; }
.ph-line-map li em { color: rgba(255, 255, 255, .55); font-size: 12px; font-style: normal; }
.ph-line-map li a:hover strong { color: var(--ztc-brand-cyan); }

/* 产品线正文 */
.ph-line-intro-grid { display: grid; grid-template-columns: minmax(280px, .8fr) minmax(420px, 1.2fr); gap: 100px; align-items: start; }
.ph-line-intro-copy > p { margin: 0; color: var(--ztc-text); font-family: var(--ztc-serif); font-size:20px; line-height: 1.9; }
.ph-line-intro-title h2 span { display: block; }
.ph-line-intro-copy dl { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; margin-top: 34px; border-top: 1px solid var(--ztc-border); }
.ph-line-intro-copy dl div { padding: 22px 16px 0 0; }
.ph-line-intro-copy dt { color: var(--ztc-action); font-family: var(--ztc-serif); font-size: 30px; font-weight: 700; }
.ph-line-intro-copy dd { margin-top: 3px; color: var(--ztc-text-muted); font-size: 12px; }
.ph-group { border-top: 1px solid var(--ztc-border); }
.ph-group--mist { background: var(--ztc-bg); }
.ph-group-head {
    display: grid;
    grid-template-columns: minmax(320px, 1fr) minmax(280px, .72fr);
    gap: 80px;
    align-items: end;
    margin-bottom: 38px;
}
.ph-group-head > div { display: flex; gap: 22px; align-items: center; }
.ph-group-head > div:last-child { flex-direction: column; align-items: flex-start; gap: 12px; }
.ph-group-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 54px;
    height: 54px;
    border: 1px dashed var(--ztc-brand-primary);
    border-radius: 50%;
    color: var(--ztc-action);
    font-family: var(--ztc-serif);
    font-size: 18px;
    font-weight: 700;
}
.ph-group-head .ph-kicker { margin-bottom: 8px; }
.ph-group-head h2 { font-size: clamp(1.8rem, 3vw, 2.45rem); }
.ph-group-head > div:last-child > p { margin: 0; color: var(--ztc-text-muted); font-size: 14px; line-height: 1.8; }
.ph-group-page-link { display: inline-flex; align-items: center; gap: 8px; color: var(--ztc-action); font-size: 13px; font-weight: 700; }
.ph-group-page-link:hover { color: var(--ztc-brand-cyan); }
.ph-line-product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.ph-line-product-card {
    display: flex;
    flex-direction: column;
    min-height: 272px;
    padding: 25px;
    border: 1px solid var(--ztc-border);
    background: var(--ztc-white);
    transition: transform .22s ease, border-color .22s ease, box-shadow .22s ease;
}
.ph-line-product-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    border: 1px solid rgba(0, 103, 180, .22);
    color: var(--ztc-action);
}
.ph-line-product-card strong { margin-top: 23px; color: var(--ztc-navy-deep); font-size:20px; line-height: 1.45; }
.ph-line-product-card p { margin: 11px 0 0; color: var(--ztc-text-muted); font-size: 13px; line-height: 1.76; }
.ph-line-product-card > span:last-child { margin-top: auto; padding-top: 22px; color: var(--ztc-action); font-size: 13px; font-weight: 700; }
.ph-related-lines { border-top: 1px solid var(--ztc-border); background: var(--ztc-white); }
.ph-related-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.ph-related-grid > a {
    display: grid;
    grid-template-columns: 42px 1fr auto;
    gap: 14px;
    align-items: center;
    min-height: 84px;
    padding: 16px 20px;
    border: 1px solid var(--ztc-border);
    transition: border-color .2s ease, background-color .2s ease;
}
.ph-related-grid > a:hover { border-color: var(--ztc-action); background: var(--ztc-tint-info-bg); }
.ph-related-grid > a > span { display: inline-flex; align-items: center; justify-content: center; width: 42px; height: 42px; color: var(--ztc-action); }
.ph-related-grid small { display: block; color: var(--ztc-text-muted); font-size:var(--ztc-fs-micro); letter-spacing: .1em; }
.ph-related-grid strong { display: block; margin-top: 2px; color: var(--ztc-navy-deep); font-size: 16px; }
.ph-related-grid em { color: var(--ztc-action); font-size: 12px; font-style: normal; font-weight: 700; }

/* CTA */
.ph-cta { position: relative; background: var(--ph-hero-gradient); color: var(--ztc-white); padding: 76px 0; }
.ph-cta::before {
    position: absolute;
    top: 0;
    left: 50%;
    width: 180px;
    height: 3px;
    background: var(--ztc-brand-cyan);
    content: "";
    transform: translateX(-50%);
}
.ph-cta-inner { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 80px; align-items: center; }
.ph-cta h2 { max-width: 780px; color: var(--ztc-white); font-size: clamp(1.8rem, 3vw, 2.5rem); }
.ph-cta p:last-child { max-width: 720px; margin: 15px 0 0; color: rgba(255, 255, 255, .78); }
.ph-cta-actions { display: flex; gap: 12px; flex-wrap: wrap; justify-content: flex-end; }
.ph-cta-actions a { min-height: 48px; display: inline-flex; align-items: center; justify-content: center; white-space: nowrap; }

@media (max-width: 1100px) {
    .ph-hero-layout { grid-template-columns: 1fr; gap: 58px; }
    .ph-hero-copy { max-width: 760px; }
    .ph-architecture { max-width: 760px; }
    .ph-line-hero-layout { grid-template-columns: 1fr .62fr; gap: 52px; }
    .ph-support-card { grid-template-columns: 1fr; }
    .ph-support-card .ph-card-link { grid-column: 1; }
}

@media (max-width: 860px) {
    .ph-hero { padding-top: 160px; }
    .ph-line-hero-layout,
    .ph-line-intro-grid,
    .ph-section-head--split,
    .ph-group-head,
    .ph-cta-inner { grid-template-columns: 1fr; gap: 38px; }
    .ph-line-map { max-width: 620px; }
    .ph-business-lines,
    .ph-line-product-grid,
    .ph-product-grid { grid-template-columns: repeat(2, 1fr); }
    .ph-support-lines { grid-template-columns: 1fr; }
    .ph-line-card { min-height: 340px; }
    .ph-cta-actions { justify-content: flex-start; }
}

@media (max-width: 640px) {
    .ph-page [id] { scroll-margin-top: 160px; }
    .ph-hero,
    .ph-line-hero { min-height: 0; padding: 142px 0 68px; }
    .ph-hero h1,
    .ph-line-hero h1 { font-size: var(--ztc-banner-h1-feature); }
    .ph-hero-lead { font-size: var(--ztc-banner-lead); line-height: 1.75; }
    .ph-hero-actions { flex-direction: column; align-items: stretch; }
    .ph-hero-actions a { width: 100%; }
    .ph-hero-facts { grid-template-columns: repeat(2, 1fr); row-gap: 22px; }
    .ph-architecture { margin: 0 -8px; padding: 18px; }
    .ph-architecture-business { grid-template-columns: 1fr; }
    .ph-architecture-card { min-height: 0; }
    .ph-architecture-card small { min-height: 0; }
    .ph-architecture-flow { display: none; }
    .ph-architecture-rail { grid-template-columns: 1fr auto; margin-top: 9px; }
    .ph-rail-role,
    .ph-rail-signal { grid-column: 1; }
    .ph-rail-main { grid-column: 1; }
    .ph-rail-arrow { grid-column: 2; grid-row: 1 / span 3; }
    .ph-local-nav { top: 76px; transform: translateY(14px); }
    .ph-local-nav-home { padding-inline: 13px !important; }
    .ph-local-nav-track { max-width: calc(100vw - 122px); }
    .ph-local-nav a { min-height: 42px; padding: 8px 14px; }
    .ph-section { padding: 72px 0; }
    .ph-section-head { margin-bottom: 34px; }
    .ph-section-head h2,
    .ph-line-intro h2,
    .ph-group-head h2 { font-size: clamp(1.75rem, 8vw, 2.2rem); }
    .ph-business-lines,
    .ph-product-grid,
    .ph-line-product-grid,
    .ph-related-grid { grid-template-columns: 1fr; }
    .ph-line-card { min-height: 320px; }
    .ph-support-card { padding: 22px; }
    .ph-line-map { padding: 22px 18px; }
    .ph-line-intro-copy > p { font-size: 18px; }
    .ph-line-intro-copy dl { grid-template-columns: repeat(2, 1fr); }
    .ph-group-head > div { align-items: flex-start; }
    .ph-group-number { width: 46px; height: 46px; flex: none; }
    .ph-catalog-tools { grid-template-columns: 1fr; gap: 18px; }
    .ph-filter { flex-wrap: nowrap; justify-content: flex-start; overflow-x: auto; padding-bottom: 5px; scrollbar-width: none; }
    .ph-filter::-webkit-scrollbar { display: none; }
    .ph-filter button { flex: none; }
    .ph-product-card,
    .ph-line-product-card { min-height: 230px; }
    .ph-cta { padding: 62px 0; }
    .ph-cta-actions { flex-direction: column; }
    .ph-cta-actions a { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
    .ph-page *,
    .ph-page *::before,
    .ph-page *::after {
        animation-duration: .01ms !important;
        animation-iteration-count: 1 !important;
        scroll-behavior: auto !important;
        transition-duration: .01ms !important;
    }
}

/* ==========================================================================
   产品体系全景塔（产品架构演示 v6 深色版移植，2026-09-03 Haning 确认后进站）
   作用域 .ph-tower：五层架构 + DNA 中枢线 + 呼吸接力上行波；固定深色 token，
   banner 背景用客户案例同款 --ztc-banner-balanced（比演示版深色浅一档）。
   ========================================================================== */
.ph-hero--tower { min-height: 0; padding-bottom: 30px; background: var(--ztc-banner-authority); }
.ph-hero-top { position: relative; z-index: 2; display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 56px; align-items: center; }
.ph-hero--tower .ph-hero-copy { max-width: 780px; }
.ph-hero--tower .ph-hero-actions { flex-direction: column; align-items: stretch; margin-top: 0; gap: 13px; }
.ph-hero--tower .ph-hero-actions a { white-space: nowrap; min-width: 216px; justify-content: center; }

.ph-tower,
.ph-tower * { box-sizing: border-box; }
.ph-tower {
    /* 深色 token（演示 v6 深色组调淡一个蓝色档位，作用域自包含，不污染全站） */
    --brand:#008ED3; --navy:#0067B4; --cyan:#61CCF0;
    --serif:var(--ztc-serif); --sans:var(--ztc-sans);
    --panel-bg:linear-gradient(172deg, rgba(22,66,110,.66), rgba(13,44,80,.72));
    --panel-border:rgba(97,204,240,.28);
    --panel-border-hover:rgba(97,204,240,.6);
    --panel-shadow:0 1px 2px rgba(3,16,32,.3), 0 18px 40px -10px rgba(3,16,32,.42);
    --panel-shadow-hover:0 2px 4px rgba(3,16,32,.34), 0 30px 56px -12px rgba(3,16,32,.55);
    --panel-hi:rgba(150,224,255,.2);
    --brand-ink:#EAF6FD; --brand-sub:#7FA9C4;
    --colhead-ink:#61CCF0;
    --lk-ink:#D9EEF9; --lk-hover-bg:#0067B4; --lk-hover-ink:#FFFFFF;
    --chip-border:rgba(97,204,240,.3); --chip-bg:rgba(97,204,240,.08);
    --puck-top:radial-gradient(ellipse at 50% 28%, rgba(66,122,172,.62) 0%, rgba(34,82,130,.72) 52%, rgba(22,58,100,.8) 100%);
    --puck-top-border:rgba(97,204,240,.38);
    --puck-rim:rgba(150,224,255,.3);
    --puck-ring:rgba(97,204,240,.36);
    --puck-sweep:rgba(150,224,255,.12);
    --puck-side:linear-gradient(180deg, #1E5288, #123C68);
    --puck-side-line:rgba(150,224,255,.34);
    --puck-bottom:linear-gradient(180deg, #1A4A7C, #0E3157);
    --puck-shadow:drop-shadow(0 24px 30px rgba(3,16,32,.4));
    --pulse-line:rgba(97,204,240,.85);
    --pulse-edge:rgba(97,204,240,.55);
    --label-ink:#EAF6FD; --label-sub:#7FA9C4;
    --orb-bg:radial-gradient(circle at 32% 28%, rgba(235,248,255,.98), rgba(140,216,248,.72) 48%, rgba(20,110,170,.85));
    --orb-border:rgba(150,224,255,.5); --orb-ink:#06283F; --orb-shadow:0 8px 18px -4px rgba(3,16,32,.5);
    --ribbon:rgba(97,204,240,.16);
    --dna:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='26' height='8'%3E%3Cline x1='0' y1='4' x2='26' y2='4' stroke='%2361CCF0' stroke-width='1.5' stroke-dasharray='2 6 12 6' stroke-linecap='round'/%3E%3C/svg%3E");
    --spine-op:.6;

    position: relative;
    z-index: 2;
    overflow: hidden;
    margin-top: 48px;
    /* 通栏：塔放大到 banner 整宽（左右出血由 hero overflow:hidden 裁切） */
    width: 100vw;
    margin-left: calc(50% - 50vw);
    font-family: var(--sans);
}
.ph-tower p { margin: 0; }
.ph-tower-zoom { position: relative; width: 1340px; margin: 0 auto; transform-origin: top center; }
.ph-tower-stack { position: relative; z-index: 2; padding: 40px 0 90px; }
.ph-tower .tier { position: relative; }
.ph-tower .tier + .tier { margin-top: 52px; }

/* 中枢：设计系统 DNA 脉络（点·隙·段·隙，描边不填充，无渐变投影） */
.ph-tower-spine { position: absolute; left: 0; top: 0; bottom: 0; width: 100%; z-index: 0; pointer-events: none; }
.ph-tower-spine svg { width: 100%; height: 100%; display: block; overflow: visible; opacity: var(--spine-op); transition: opacity .8s; }
.ph-tower-spine svg.surge { opacity: calc(var(--spine-op) * 1.9); }
.ph-tower-spine .beam { stroke-linecap: round; fill: none; }
.ph-tower-spine .node { fill: var(--cyan); }
.ph-tower-spine .pdot { fill: var(--brand); }
.ph-tower-spine .sdot { fill: var(--cyan); opacity: 0; }

/* 平台（puck：细沿口 + 柔和大投影 + 慢转） */
.ph-tower .puck { position: relative; margin: 0 auto; width: var(--w); height: calc(var(--h) + var(--t)); z-index: 3; filter: var(--puck-shadow); }
.ph-tower .puck > i { position: absolute; left: 0; width: 100%; display: block; }
.ph-tower .puck .top {
    top: 0; height: var(--h); border-radius: 50%; z-index: 2; overflow: hidden;
    background: var(--puck-top);
    border: 1px solid var(--puck-top-border);
    box-shadow: inset 0 1.5px 0 var(--puck-rim);
    transition: border-color .5s, box-shadow .5s;
}
/* 上行光波：盘面扩圈涟漪 + 现有边框轻亮一拍（不多画光束，文字不参与） */
.ph-tower .puck::after {
    content: ""; position: absolute; top: 0; left: 0; width: 100%; height: var(--h);
    border-radius: 50%; border: 1.5px solid var(--pulse-line);
    opacity: 0; z-index: 5; pointer-events: none;
}
.ph-tower .tier.lit .puck::after { animation: pht-halo 1.15s cubic-bezier(.22,.61,.36,1) both; }
@keyframes pht-halo {
    0% { transform: scale(.975); opacity: 0; }
    16% { opacity: .7; }
    100% { transform: scale(1.06); opacity: 0; }
}
.ph-tower .tier.lit .panel,
.ph-tower .tier.lit .puck .top { border-color: var(--pulse-edge); }
/* 转动光泽（conic 亮弧随圆片旋转，椭圆裁切） */
.ph-tower .puck .spin {
    position: absolute; left: 50%; top: 50%; width: 170%; aspect-ratio: 1/1;
    translate: -50% -50%; border-radius: 50%;
    background: conic-gradient(from 0deg,
        transparent 0deg 32deg, var(--puck-sweep) 58deg, transparent 84deg 202deg,
        var(--puck-sweep) 228deg, transparent 254deg 360deg);
    animation: pht-spin var(--spd, 34s) linear infinite;
}
@keyframes pht-spin { to { transform: rotate(360deg); } }
.ph-tower .puck .orbit { position: absolute; inset: 0; width: 100%; height: 100%; }
.ph-tower .puck .orbit ellipse {
    fill: none; stroke: var(--puck-ring); stroke-width: 1;
    stroke-dasharray: 2.5 6.5; vector-effect: non-scaling-stroke;
    animation: pht-orbit var(--spd, 34s) linear infinite;
}
@keyframes pht-orbit { to { stroke-dashoffset: -90; } }
/* 相邻层反向，齿轮联动感 */
.ph-tower .tier:nth-of-type(even) .puck .spin,
.ph-tower .tier:nth-of-type(even) .puck .orbit ellipse { animation-direction: reverse; }
.ph-tower .puck .side { top: calc(var(--h)/2); height: var(--t); z-index: 1; background: var(--puck-side); box-shadow: inset 0 1px 0 var(--puck-side-line); }
.ph-tower .puck .bottom { top: var(--t); height: var(--h); border-radius: 50%; z-index: 0; background: var(--puck-bottom); }
.ph-tower .tier:has(.panel:hover) .puck .top { border-color: var(--brand); }

/* 层级标签：左侧统领位（眉标短线 + 衬线大名 + 英文小字），与卡片中部齐平 */
.ph-tower .tier-label { position: absolute; left: 0; bottom: 14px; z-index: 5; pointer-events: none; }
.ph-tower .tier-label .tag { position: relative; padding-top: 11px; }
.ph-tower .tier-label .tag::before {
    content: ""; position: absolute; top: 0; left: 0; width: 22px; height: 3px;
    border-radius: 2px; background: var(--brand);
}
.ph-tower .tier-label .tag b {
    display: block; font-family: var(--serif); font-size: 20px; font-weight: 700;
    color: var(--label-ink); letter-spacing: .05em; white-space: nowrap;
}
.ph-tower .tier-label .tag span {
    display: block; margin-top: 4px; font-size: 10px; font-weight: 600;
    letter-spacing: .2em; text-transform: uppercase; color: var(--label-sub); white-space: nowrap;
}

/* 立在平台上的面板 */
.ph-tower .panels { position: relative; z-index: 4; display: flex; justify-content: center; align-items: flex-end; gap: 28px; }
.ph-tower .tier > .panels { margin-bottom: calc(var(--h) * -0.42); }
.ph-tower .panel {
    position: relative;
    height: var(--ch, 250px);
    background: var(--panel-bg);
    border: 1px solid var(--panel-border); border-radius: 16px;
    box-shadow: var(--panel-shadow), inset 0 1px 0 var(--panel-hi);
    padding: 18px 20px; text-align: center;
    display: flex; flex-direction: column; justify-content: center;
    transition: transform .28s cubic-bezier(.2,.7,.3,1), box-shadow .45s, border-color .45s;
}
.ph-tower .panel:hover {
    transform: translateY(-5px); border-color: var(--panel-border-hover);
    box-shadow: var(--panel-shadow-hover), inset 0 1px 0 var(--panel-hi);
}
/* 品牌头：眉标短线 + 衬线品牌名 + 英文小字 + DNA 分隔（全系统同规格） */
.ph-tower .brand { display: flex; align-items: center; justify-content: center; gap: 10px; margin-bottom: 8px; }
.ph-tower .brand::before { content: ""; width: 3px; height: 15px; border-radius: 2px; background: var(--brand); flex: none; }
.ph-tower .brand b { font-family: var(--serif); font-size: 19px; font-weight: 700; color: var(--brand-ink); letter-spacing: .02em; white-space: nowrap; }
.ph-tower .brand span { font-size: 10.5px; font-weight: 600; letter-spacing: .18em; text-transform: uppercase; color: var(--brand-sub); white-space: nowrap; }
.ph-tower .rule { display: block; width: 112px; height: 8px; margin: 0 auto 12px; opacity: .55; background: var(--dna) repeat-x center; }
.ph-tower .cols { display: flex; gap: 18px; justify-content: center; }
.ph-tower .col .ph-tower-col-label { margin: 0 0 8px; font-size: 12px; font-weight: 700; color: var(--colhead-ink); letter-spacing: .08em; }
.ph-tower .items { display: grid; gap: 7px 14px; justify-content: center; }
.ph-tower .lk {
    display: inline-block; font-size: 13px; line-height: 1.5; color: var(--lk-ink); text-decoration: none;
    border-radius: 6px; padding: 3px 10px; transition: all .18s; white-space: nowrap;
}
.ph-tower .lk:hover { color: var(--lk-hover-ink); background: var(--lk-hover-bg); }
.ph-tower .lk::after { content: "›"; margin-left: 4px; opacity: 0; transition: opacity .18s; font-size: 11px; }
.ph-tower .lk:hover::after { opacity: .85; }

/* 横向宽卡（司库 / 智能体） */
.ph-tower .panel--wide { height: auto; padding: 20px 28px; }
.ph-tower .panel--wide .band { display: flex; align-items: center; justify-content: center; gap: 32px; }
.ph-tower .panel--wide .band .brand { margin: 0; padding: 0 28px 0 0; border-right: 1px solid var(--panel-border); flex-direction: column; gap: 2px; }
.ph-tower .panel--wide .band .brand::before { width: 15px; height: 3px; }
.ph-tower .panel--wide .band .brand b { font-size: 21px; }
.ph-tower .panel--wide .band-items { display: flex; gap: 9px; }
.ph-tower .panel--wide .band-items .lk { font-size: 13.5px; font-weight: 600; padding: 6px 14px; background: var(--chip-bg); border: 1px solid var(--chip-border); }
.ph-tower .panel--wide .band-items .lk:hover { background: var(--lk-hover-bg); border-color: transparent; color: var(--lk-hover-ink); }

/* 智能体：10 个 AI 产品光球 */
.ph-tower .agents { display: grid; grid-template-columns: repeat(10, 1fr); gap: 8px; margin-top: 2px; }
.ph-tower .agent { text-decoration: none; text-align: center; padding: 6px 2px; border-radius: 10px; transition: background .2s; }
.ph-tower .agent:hover { background: var(--chip-bg); }
.ph-tower .agent .o {
    width: 44px; height: 44px; margin: 0 auto 8px; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    background: var(--orb-bg); border: 1px solid var(--orb-border); box-shadow: var(--orb-shadow);
    font-family: var(--serif); font-size: 16px; font-weight: 700; color: var(--orb-ink);
    transition: transform .24s cubic-bezier(.2,.7,.3,1);
}
.ph-tower .agent:hover .o { transform: translateY(-4px); }
.ph-tower .agent .n { font-size: 12px; font-weight: 600; color: var(--lk-ink); white-space: nowrap; letter-spacing: .02em; }
.ph-tower .agent:hover .n { color: #FFFFFF; }
.ph-tower .agent .bob { display: block; animation: pht-bob 4.6s ease-in-out infinite; }
.ph-tower .agents .agent:nth-child(3n+1) .bob { animation-delay: -1.2s; }
.ph-tower .agents .agent:nth-child(3n+2) .bob { animation-delay: -2.5s; }
.ph-tower .agents .agent:nth-child(4n) .bob { animation-delay: -3.4s; }
@keyframes pht-bob { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-3px); } }

/* 底座：三张产品名面板（整板即链接） */
.ph-tower .panel--base { text-decoration: none; height: var(--ch, 120px); cursor: pointer; }
.ph-tower .panel--base .brand { margin-bottom: 0; }
.ph-tower .panel--base .arrow {
    position: absolute; right: 16px; bottom: 12px; font-size: 15px; color: var(--brand);
    opacity: 0; transform: translateX(-4px); transition: all .22s;
}
.ph-tower .panel--base:hover .arrow { opacity: 1; transform: translateX(0); }

/* 底座两侧装饰弧 */
.ph-tower .ribbon {
    position: absolute; z-index: 1; pointer-events: none; border-radius: 50%;
    border: 13px solid var(--ribbon); border-top-color: transparent; border-bottom-color: transparent;
}

@media (max-width: 1100px) {
    .ph-hero-top { grid-template-columns: 1fr; gap: 30px; align-items: start; }
    .ph-hero--tower .ph-hero-actions { flex-direction: row; flex-wrap: wrap; }
    /* 塔未做自适应：iPad 尺寸起隐藏（纵向列表降级为收口待办） */
    .ph-tower { display: none; }
    .ph-hero--tower { padding-bottom: 78px; }
}
@media (max-width: 640px) {
    /* 塔定宽 1340 等比缩小（演示级）；移动端纵向列表降级是收口前的待办 */
    .ph-tower { margin-top: 34px; }
}
@media (prefers-reduced-motion: reduce) {
    .ph-tower .agent .bob,
    .ph-tower .puck .spin,
    .ph-tower .puck .orbit ellipse { animation: none !important; }
    .ph-tower-spine .pdot { display: none; }
}