/* =========================================================
   禾行软件
   ========================================================= */

:root {
    --ink: #1a2f44;
    --ink-soft: #3d566e;
    --muted: #6d8499;
    --line: rgba(45, 110, 168, 0.14);
    --paper: #f2f7fc;
    --paper-2: #e4eef8;
    --white: #ffffff;
    --brand: #3d82bc;
    --brand-deep: #245986;
    --brand-mid: #5a9bd0;
    --accent: #7eb8e6;
    --accent-soft: #b7d8f2;
    --shadow: 0 18px 50px rgba(36, 89, 134, 0.12);
    --radius: 16px;
    --container: 1120px;
    --header-h: 72px;
    /* 系统字体（不含微软雅黑）；避免 Google Fonts 在国内加载过慢 */
    --font-zh: "PingFang SC", "Hiragino Sans GB", "Source Han Sans SC", "Noto Sans CJK SC", "WenQuanYi Micro Hei", "Segoe UI", sans-serif;
    --font-en: "Segoe UI", "Helvetica Neue", Arial, var(--font-zh);
    --ease: cubic-bezier(0.22, 1, 0.36, 1);

    /* 兼容旧变量名 */
    --forest: var(--brand);
    --forest-deep: var(--brand-deep);
    --moss: var(--brand-mid);
    --grain: var(--accent);
    --grain-soft: var(--accent-soft);
}

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

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: var(--font-zh);
    color: var(--ink);
    background: var(--paper);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

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

a {
    color: inherit;
    text-decoration: none;
}

button {
    font: inherit;
    border: 0;
    background: none;
    cursor: pointer;
}

.container {
    width: min(100% - 2.5rem, var(--container));
    margin-inline: auto;
}

/* ---- Atmosphere background ---- */
.page-bg {
    position: fixed;
    inset: 0;
    z-index: -1;
    pointer-events: none;
    background:
        radial-gradient(900px 500px at 8% -10%, rgba(90, 155, 208, 0.22), transparent 60%),
        radial-gradient(700px 420px at 92% 8%, rgba(126, 184, 230, 0.20), transparent 55%),
        radial-gradient(800px 500px at 70% 100%, rgba(61, 130, 188, 0.10), transparent 50%),
        linear-gradient(180deg, #eaf3fb 0%, var(--paper) 40%, #e7f1fa 100%);
}

.page-bg::after {
    content: "";
    position: absolute;
    inset: 0;
    opacity: 0.35;
    background-image:
        linear-gradient(rgba(36, 89, 134, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(36, 89, 134, 0.05) 1px, transparent 1px);
    background-size: 48px 48px;
    mask-image: linear-gradient(180deg, rgba(0,0,0,.55), transparent 85%);
}

/* ---- Header ---- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    height: var(--header-h);
    backdrop-filter: blur(14px);
    background: rgba(242, 247, 252, 0.84);
    border-bottom: 1px solid transparent;
    transition: border-color .3s var(--ease), background .3s var(--ease), box-shadow .3s var(--ease);
}

.site-header.is-scrolled {
    border-bottom-color: var(--line);
    background: rgba(242, 247, 252, 0.96);
    box-shadow: 0 8px 24px rgba(36, 89, 134, 0.08);
}

.header-inner {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    min-width: 0;
}

.brand-mark {
    /* 与「禾行软件 + HEXING SOFT」两行总高对齐 */
    height: calc(1.2rem * 1.15 + 0.72rem * 1.15);
    width: auto;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    transition: transform .45s var(--ease);
}

.brand:hover .brand-mark {
    transform: translateY(-1px) scale(1.03);
}

.brand-mark img {
    width: auto;
    height: 100%;
    max-height: 100%;
    object-fit: contain;
    display: block;
    filter: drop-shadow(0 2px 6px rgba(36, 89, 134, 0.18));
}

.brand-text {
    display: flex;
    flex-direction: column;
    line-height: 1.15;
}

.brand-name {
    font-size: 1.2rem;
    font-weight: 700;
    letter-spacing: 0.04em;
}

.brand-en {
    font-family: var(--font-en);
    font-size: 0.72rem;
    color: var(--muted);
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.site-nav {
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

.nav-link {
    padding: 0.55rem 0.9rem;
    border-radius: 999px;
    font-size: 0.95rem;
    color: var(--ink-soft);
    transition: color .25s var(--ease), background .25s var(--ease);
}

.nav-link:hover,
.nav-link.is-active {
    color: var(--brand-deep);
    background: rgba(61, 130, 188, 0.10);
}

.nav-cta {
    margin-left: 0.4rem;
    padding: 0.6rem 1.1rem;
    border-radius: 999px;
    background: var(--forest);
    color: #f4f7f5;
    font-weight: 600;
    font-size: 0.92rem;
    transition: transform .25s var(--ease), background .25s var(--ease);
}

.nav-cta:hover {
    background: var(--forest-deep);
    transform: translateY(-1px);
}

.nav-toggle {
    display: none;
    width: 42px;
    height: 42px;
    border-radius: 10px;
    place-items: center;
    gap: 5px;
    flex-direction: column;
}

.nav-toggle span {
    display: block;
    width: 18px;
    height: 2px;
    background: var(--ink);
    border-radius: 2px;
    transition: transform .3s var(--ease), opacity .3s var(--ease);
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
}
.nav-toggle[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ---- Main / sections ---- */
.site-main {
    min-height: calc(100vh - var(--header-h) - 180px);
}

.section {
    padding: 4.5rem 0;
}

.section-head {
    max-width: 640px;
    margin-bottom: 2.5rem;
}

.eyebrow {
    display: inline-block;
    margin: 0 0 0.75rem;
    font-family: var(--font-en);
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--moss);
}

.section-title {
    margin: 0 0 0.75rem;
    font-size: clamp(1.75rem, 3vw, 2.35rem);
    line-height: 1.25;
    letter-spacing: 0.02em;
}

.section-desc {
    margin: 0;
    color: var(--ink-soft);
    font-size: 1.05rem;
}

/* ---- Buttons ---- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.45rem;
    padding: 0.85rem 1.35rem;
    border-radius: 999px;
    font-weight: 600;
    font-size: 0.98rem;
    transition: transform .25s var(--ease), background .25s var(--ease), color .25s var(--ease), border-color .25s var(--ease);
}

.btn:hover {
    transform: translateY(-2px);
}

.btn-primary {
    background: var(--forest);
    color: #f4f7f5;
}

.btn-primary:hover {
    background: var(--forest-deep);
}

.btn-ghost {
    border: 1px solid rgba(61, 130, 188, 0.32);
    color: var(--brand-deep);
    background: rgba(255, 255, 255, 0.45);
}

.btn-ghost:hover {
    border-color: var(--forest);
    background: rgba(255, 255, 255, 0.8);
}

.btn-group {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

/* ---- Reveal motion ---- */
.reveal {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity .8s var(--ease), transform .8s var(--ease);
}

.reveal.is-in {
    opacity: 1;
    transform: none;
}

.reveal-delay-1 { transition-delay: .1s; }
.reveal-delay-2 { transition-delay: .2s; }
.reveal-delay-3 { transition-delay: .3s; }

/* =========================================================
   Home — Hero
   ========================================================= */
.hero {
    position: relative;
    min-height: calc(100vh - var(--header-h));
    display: grid;
    align-items: stretch;
    overflow: hidden;
}

.hero-plane {
    position: absolute;
    inset: 0;
    background:
        linear-gradient(105deg, rgba(22, 52, 82, 0.82) 0%, rgba(36, 89, 134, 0.58) 42%, rgba(61, 130, 188, 0.28) 70%, transparent 100%),
        url("../img/hero-factory.svg") center / cover no-repeat,
        linear-gradient(140deg, #1a3f63, #2f6fa8 45%, #4f93c9);
}

.hero-plane::after {
    content: "";
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 78% 42%, rgba(167, 214, 245, 0.28), transparent 28%),
        linear-gradient(180deg, transparent 65%, rgba(18, 48, 78, 0.38));
    animation: heroGlow 8s ease-in-out infinite alternate;
}

@keyframes heroGlow {
    from { opacity: 0.75; }
    to   { opacity: 1; }
}

.hero-content {
    position: relative;
    z-index: 1;
    width: min(100% - 2.5rem, var(--container));
    margin: auto;
    padding: 5rem 0 4rem;
    max-width: 620px;
    color: #f4f7f5;
}

.hero-logo {
    width: 64px;
    margin: 0 0 1.1rem;
    filter: drop-shadow(0 10px 24px rgba(0, 0, 0, 0.25));
    animation: brandIn 1s var(--ease) both;
}

.hero-logo img {
    width: 100%;
    height: auto;
    display: block;
}

.hero-brand {
    margin: 0 0 1.25rem;
    font-size: clamp(2.8rem, 7vw, 4.4rem);
    font-weight: 700;
    letter-spacing: 0.08em;
    line-height: 1.05;
    animation: brandIn 1s var(--ease) 0.06s both;
}

.hero-brand small {
    display: block;
    margin-top: 0.55rem;
    font-family: var(--font-en);
    font-size: 0.95rem;
    font-weight: 500;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--grain-soft);
    opacity: 0.95;
}

@keyframes brandIn {
    from { opacity: 0; transform: translateY(24px) scale(0.98); }
    to   { opacity: 1; transform: none; }
}

.hero-headline {
    margin: 0 0 1rem;
    font-size: clamp(1.35rem, 2.6vw, 1.75rem);
    font-weight: 500;
    line-height: 1.4;
    animation: brandIn 1s var(--ease) 0.12s both;
}

.hero-lead {
    margin: 0 0 2rem;
    max-width: 34em;
    font-size: 1.05rem;
    color: rgba(244, 247, 245, 0.86);
    animation: brandIn 1s var(--ease) 0.22s both;
}

.hero .btn-group {
    animation: brandIn 1s var(--ease) 0.32s both;
}

.hero .btn-ghost {
    border-color: rgba(244, 247, 245, 0.35);
    color: #f4f7f5;
    background: rgba(255, 255, 255, 0.06);
}

.hero .btn-ghost:hover {
    background: rgba(255, 255, 255, 0.14);
    border-color: rgba(244, 247, 245, 0.6);
}

.hero .btn-primary {
    background: #ffffff;
    color: var(--brand-deep);
}

.hero .btn-primary:hover {
    background: var(--accent-soft);
}

.hero-scroll {
    position: absolute;
    left: 50%;
    bottom: 1.5rem;
    transform: translateX(-50%);
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.35rem;
    color: rgba(244, 247, 245, 0.7);
    font-size: 0.75rem;
    letter-spacing: 0.12em;
    animation: bob 2.4s ease-in-out infinite;
}

.hero-scroll i {
    width: 1px;
    height: 28px;
    background: linear-gradient(transparent, rgba(244,247,245,.8));
}

@keyframes bob {
    0%, 100% { transform: translate(-50%, 0); opacity: .7; }
    50% { transform: translate(-50%, 6px); opacity: 1; }
}

/* Home — highlights */
.home-strip {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-top: -2.5rem;
    position: relative;
    z-index: 2;
}

.strip-item {
    padding: 1.35rem 1.4rem;
    background: rgba(255, 255, 255, 0.78);
    border: 1px solid rgba(255, 255, 255, 0.7);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    backdrop-filter: blur(10px);
}

.strip-item strong {
    display: block;
    margin-bottom: 0.25rem;
    font-size: 1.05rem;
    color: var(--forest-deep);
}

.strip-item span {
    color: var(--muted);
    font-size: 0.92rem;
}

/* Home — tech & focus */
.focus-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 2rem;
    align-items: center;
}

.focus-visual {
    position: relative;
    min-height: 320px;
    border-radius: 24px;
    overflow: hidden;
    background:
        linear-gradient(145deg, rgba(61, 130, 188, 0.14), rgba(126, 184, 230, 0.14)),
        var(--paper-2);
    border: 1px solid var(--line);
}

.focus-visual img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    min-height: 320px;
}

.tech-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.55rem;
    margin: 1.25rem 0 0;
    padding: 0;
    list-style: none;
}

.tech-list li {
    padding: 0.4rem 0.85rem;
    border-radius: 999px;
    background: rgba(61, 130, 188, 0.10);
    color: var(--brand-deep);
    font-family: var(--font-en);
    font-size: 0.88rem;
    font-weight: 600;
    letter-spacing: 0.02em;
}

.cta-band {
    margin: 1rem 0 4.5rem;
    padding: 2.5rem;
    border-radius: 24px;
    background:
        linear-gradient(120deg, var(--brand-deep), var(--brand) 55%, #5a9bd0);
    color: #f4f8fc;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1.25rem;
    box-shadow: var(--shadow);
}

.cta-band h2 {
    margin: 0 0 0.4rem;
    font-size: clamp(1.4rem, 2.4vw, 1.8rem);
}

.cta-band p {
    margin: 0;
    color: rgba(244, 247, 245, 0.82);
}

.cta-band .btn-primary {
    background: #ffffff;
    color: var(--brand-deep);
}

/* =========================================================
   Page intro (inner pages)
   ========================================================= */
.page-intro {
    padding: 3.5rem 0 1rem;
}

.page-intro .section-title {
    font-size: clamp(2rem, 4vw, 2.8rem);
}

/* =========================================================
   Services
   ========================================================= */
.service-list {
    display: grid;
    gap: 1.25rem;
}

.service-item {
    display: grid;
    grid-template-columns: 72px 1fr;
    gap: 1.25rem;
    padding: 1.6rem 1.7rem;
    border-radius: var(--radius);
    background: rgba(255, 255, 255, 0.72);
    border: 1px solid var(--line);
    transition: transform .35s var(--ease), box-shadow .35s var(--ease), border-color .35s var(--ease);
}

.service-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow);
    border-color: rgba(61, 130, 188, 0.28);
}

.service-num {
    font-family: var(--font-en);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--grain);
    line-height: 1;
    padding-top: 0.2rem;
}

.service-item h3 {
    margin: 0 0 0.5rem;
    font-size: 1.25rem;
}

.service-item p {
    margin: 0 0 0.9rem;
    color: var(--ink-soft);
}

.service-points {
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem;
    margin: 0;
    padding: 0;
    list-style: none;
}

.service-points li {
    padding: 0.28rem 0.7rem;
    border-radius: 999px;
    background: rgba(61, 130, 188, 0.08);
    color: var(--brand-deep);
    font-size: 0.86rem;
}

.stack-panel {
    margin-top: 3rem;
    padding: 1.8rem;
    border-radius: var(--radius);
    background: linear-gradient(135deg, rgba(61, 130, 188, 0.10), rgba(126, 184, 230, 0.14));
    border: 1px solid var(--line);
}

.stack-panel h3 {
    margin: 0 0 0.5rem;
}

.stack-panel p {
    margin: 0 0 1rem;
    color: var(--ink-soft);
}

/* =========================================================
   News — construction
   ========================================================= */
.building {
    margin: 1rem 0 4.5rem;
    min-height: 380px;
    display: grid;
    place-items: center;
    text-align: center;
    padding: 3rem 1.5rem;
    border-radius: 24px;
    background:
        radial-gradient(circle at 30% 20%, rgba(126, 184, 230, 0.22), transparent 40%),
        radial-gradient(circle at 70% 80%, rgba(61, 130, 188, 0.14), transparent 42%),
        rgba(255, 255, 255, 0.65);
    border: 1px dashed rgba(61, 130, 188, 0.32);
}

.building-icon {
    width: 84px;
    height: 84px;
    margin: 0 auto 1.25rem;
    color: var(--forest);
    animation: pulseSoft 2.8s ease-in-out infinite;
}

@keyframes pulseSoft {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.04); opacity: 0.85; }
}

.building h2 {
    margin: 0 0 0.6rem;
    font-size: 1.8rem;
}

.building p {
    margin: 0;
    max-width: 28em;
    color: var(--ink-soft);
}

/* =========================================================
   Contact
   ========================================================= */
.contact-layout {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: 1.5rem;
    margin-bottom: 4.5rem;
}

.contact-panel,
.contact-aside {
    border-radius: 24px;
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.72);
    padding: 2rem;
}

.contact-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 1.1rem;
}

.contact-list li {
    display: grid;
    grid-template-columns: 40px 1fr;
    gap: 0.85rem;
    align-items: start;
}

.contact-icon {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    display: grid;
    place-items: center;
    background: rgba(61, 130, 188, 0.12);
    color: var(--brand);
}

.contact-list .label {
    display: block;
    font-size: 0.82rem;
    color: var(--muted);
    margin-bottom: 0.15rem;
}

.contact-list .value {
    font-weight: 600;
    color: var(--ink);
    word-break: break-all;
}

.contact-list a.value:hover {
    color: var(--forest);
}

.contact-aside {
    background:
        linear-gradient(160deg, rgba(45, 110, 168, 0.96), rgba(28, 72, 112, 0.98));
    color: #f4f8fc;
    border: 0;
}

.contact-aside h3 {
    margin: 0 0 0.75rem;
    font-size: 1.35rem;
}

.contact-aside p {
    margin: 0 0 1.25rem;
    color: rgba(244, 247, 245, 0.82);
}

.contact-aside ul {
    margin: 0;
    padding-left: 1.1rem;
    color: rgba(244, 247, 245, 0.88);
}

.contact-aside li + li {
    margin-top: 0.45rem;
}

.note {
    margin-top: 1.5rem;
    padding-top: 1.25rem;
    border-top: 1px solid rgba(244, 247, 245, 0.18);
    font-size: 0.9rem;
    color: rgba(244, 247, 245, 0.72);
}

/* ---- Footer ---- */
.site-footer {
    border-top: 1px solid var(--line);
    padding: 2.25rem 0;
    background: rgba(255, 255, 255, 0.45);
}

.footer-inner {
    display: grid;
    gap: 1rem;
}

.footer-name {
    margin: 0;
    font-weight: 700;
    font-size: 1.05rem;
}

.footer-tagline {
    margin: 0.2rem 0 0;
    color: var(--muted);
    font-size: 0.92rem;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.85rem 1.25rem;
}

.footer-links a {
    color: var(--ink-soft);
    font-size: 0.92rem;
}

.footer-links a:hover {
    color: var(--forest);
}

.footer-meta {
    margin-top: 0.5rem;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem 1.25rem;
}

.footer-copy {
    margin: 0;
    color: var(--muted);
    font-size: 0.85rem;
}

.footer-beian-list {
    margin: 0;
    margin-left: auto;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: flex-end;
    gap: 0.15rem 0;
    text-align: right;
    color: var(--muted);
    font-size: 0.85rem;
}

.footer-sep {
    margin: 0 0.45rem;
    color: var(--muted);
    opacity: 0.55;
}

.footer-beian {
    color: var(--muted);
    transition: color .25s var(--ease);
    white-space: nowrap;
}

.footer-beian:hover {
    color: var(--brand-deep);
}

@media (max-width: 768px) {
    .footer-meta {
        flex-direction: column;
        align-items: flex-start;
    }

    .footer-beian-list {
        margin-left: 0;
        justify-content: flex-start;
        text-align: left;
    }
}

/* ---- Responsive ---- */
@media (max-width: 900px) {
    .home-strip {
        grid-template-columns: 1fr;
        margin-top: 0;
    }

    .focus-grid,
    .contact-layout {
        grid-template-columns: 1fr;
    }

    .hero {
        min-height: auto;
    }

    .hero-content {
        padding: 4rem 0 5rem;
    }
}

@media (max-width: 768px) {
    .nav-toggle {
        display: inline-flex;
    }

    .site-nav {
        position: absolute;
        top: var(--header-h);
        left: 0;
        right: 0;
        flex-direction: column;
        align-items: stretch;
        padding: 0.75rem 1.25rem 1.25rem;
        background: rgba(242, 247, 252, 0.97);
        border-bottom: 1px solid var(--line);
        gap: 0.25rem;
        transform: translateY(-8px);
        opacity: 0;
        pointer-events: none;
        transition: opacity .25s var(--ease), transform .25s var(--ease);
    }

    .site-nav.is-open {
        opacity: 1;
        transform: none;
        pointer-events: auto;
    }

    .nav-link,
    .nav-cta {
        margin: 0;
        text-align: center;
    }

    .service-item {
        grid-template-columns: 48px 1fr;
        padding: 1.25rem;
    }

    .cta-band {
        padding: 1.6rem;
    }

    .section {
        padding: 3.25rem 0;
    }
}

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

    .reveal {
        opacity: 1;
        transform: none;
    }
}