:root {
    --brand: #0a3d4a;
    --brand-deep: #062a33;
    --brand-mid: #136f84;
    --accent: #e07a2f;
    --accent-hover: #c9651f;
    --accent-soft: #fff3e8;
    --ink: #1a2b32;
    --ink-soft: #4a5d66;
    --muted: #7a8b93;
    --line: #d9e3e7;
    --bg: #f5f8fa;
    --bg-alt: #eef4f6;
    --white: #ffffff;
    --ok: #1a8a5c;
    --radius: 6px;
    --shadow: 0 12px 40px rgba(6, 42, 51, 0.08);
    --shadow-sm: 0 4px 16px rgba(6, 42, 51, 0.06);
    --header-h: 72px;
    --container: 1180px;
    --font-display: "ZCOOL XiaoWei", "Noto Serif SC", serif;
    --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
    --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

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

body {
    font-family: var(--font-body);
    color: var(--ink);
    background: var(--bg);
    line-height: 1.7;
    font-size: 15px;
    overflow-x: hidden;
}

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

a {
    color: inherit;
    text-decoration: none;
    transition: color 0.25s var(--ease);
}

ul,
ol {
    list-style: none;
}

button,
input,
textarea,
select {
    font: inherit;
}

.container {
    width: min(100% - 40px, var(--container));
    margin-inline: auto;
}

.section {
    padding: 88px 0;
}

.section-sm {
    padding: 64px 0;
}

.section-head {
    text-align: center;
    max-width: 680px;
    margin: 0 auto 48px;
}

.section-head .eyebrow {
    display: inline-block;
    font-size: 13px;
    letter-spacing: 0.12em;
    color: var(--brand-mid);
    margin-bottom: 12px;
    font-weight: 500;
}

.section-head h2 {
    font-family: var(--font-display);
    font-size: clamp(28px, 3.2vw, 40px);
    color: var(--brand);
    line-height: 1.25;
    margin-bottom: 14px;
    font-weight: 400;
}

.section-head p {
    color: var(--ink-soft);
    font-size: 15px;
}

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: var(--radius);
    border: 1.5px solid transparent;
    font-weight: 500;
    font-size: 15px;
    cursor: pointer;
    transition: all 0.3s var(--ease);
    white-space: nowrap;
}

.btn-primary {
    background: var(--accent);
    color: var(--white);
    border-color: var(--accent);
}

.btn-primary:hover {
    background: var(--accent-hover);
    border-color: var(--accent-hover);
    transform: translateY(-1px);
}

.btn-ghost {
    background: transparent;
    color: var(--white);
    border-color: rgba(255, 255, 255, 0.45);
}

.btn-ghost:hover {
    background: rgba(255, 255, 255, 0.12);
    border-color: var(--white);
}

.btn-outline {
    background: transparent;
    color: var(--brand);
    border-color: var(--brand-mid);
}

.btn-outline:hover {
    background: var(--brand);
    color: var(--white);
}

.btn-lg {
    padding: 15px 36px;
    font-size: 16px;
}

.btn-block {
    width: 100%;
}

/* ---------- Header ---------- */
.site-header {
    position: fixed;
    inset: 0 0 auto;
    z-index: 1000;
    height: var(--header-h);
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid transparent;
    transition: box-shadow 0.3s, border-color 0.3s, background 0.3s;
}

.site-header.is-scrolled {
    box-shadow: var(--shadow-sm);
    border-bottom-color: var(--line);
}

.site-header.is-home:not(.is-scrolled) {
    background: transparent;
    border-bottom-color: transparent;
}

.site-header.is-home:not(.is-scrolled) .logo-text,
.site-header.is-home:not(.is-scrolled) .nav-list > li > a {
    color: var(--white);
}

.site-header.is-home:not(.is-scrolled) .nav-toggle span {
    background: var(--white);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-h);
    gap: 24px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
    z-index: 1001;
}

.logo-img {
    width: auto;
    height: 42px;
    display: block;
    object-fit: contain;
    border-radius: 50%;
}

.logo-mark {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--brand-mid), var(--brand));
    border-radius: 8px;
    display: grid;
    place-items: center;
    color: var(--white);
    font-family: var(--font-display);
    font-size: 18px;
    line-height: 1;
}

.logo-text {
    font-family: var(--font-display);
    font-size: 18px;
    color: var(--brand);
    letter-spacing: 0.02em;
    transition: color 0.3s;
    line-height: 1.25;
}

.logo-text small {
    display: block;
    font-family: var(--font-body);
    font-size: 11px;
    color: var(--muted);
    letter-spacing: 0.04em;
    margin-top: 1px;
    font-weight: 400;
}

.site-header.is-home:not(.is-scrolled) .logo-text {
    color: var(--white);
}

.site-header.is-home:not(.is-scrolled) .logo-text small {
    color: rgba(255, 255, 255, 0.7);
}

.site-header.is-home:not(.is-scrolled) .logo-img {
    filter: brightness(1.05);
}

.nav-list {
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav-list > li {
    position: relative;
}

.nav-list > li > a {
    display: block;
    padding: 8px 14px;
    font-size: 14px;
    color: var(--ink);
    border-radius: 4px;
    transition: color 0.25s, background 0.25s;
}

.nav-list > li > a:hover,
.nav-list > li > a.is-active {
    color: var(--brand-mid);
}

.nav-list > li.has-sub > a::after {
    content: "";
    display: inline-block;
    width: 0;
    height: 0;
    margin-left: 5px;
    border-left: 3.5px solid transparent;
    border-right: 3.5px solid transparent;
    border-top: 4px solid currentColor;
    vertical-align: middle;
    opacity: 0.6;
}

.dropdown {
    position: absolute;
    top: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%) translateY(8px);
    min-width: 220px;
    background: var(--white);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 10px;
    opacity: 0;
    visibility: hidden;
    transition: all 0.25s var(--ease);
    border: 1px solid var(--line);
}

.nav-list > li:hover > .dropdown,
.nav-list > li:focus-within > .dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.dropdown a {
    display: block;
    padding: 10px 14px;
    font-size: 13px;
    color: var(--ink-soft);
    border-radius: 4px;
}

.dropdown a:hover {
    background: var(--bg-alt);
    color: var(--brand-mid);
}

.header-cta {
    flex-shrink: 0;
}

.nav-toggle {
    display: none;
    width: 40px;
    height: 40px;
    border: none;
    background: transparent;
    cursor: pointer;
    position: relative;
    z-index: 1001;
    padding: 8px;
}

.nav-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--brand);
    margin: 5px auto;
    transition: all 0.3s var(--ease);
    border-radius: 1px;
}

.nav-toggle.is-open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.nav-toggle.is-open span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.is-open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ---------- Hero ---------- */
.hero {
    position: relative;
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    align-items: center;
    overflow: hidden;
    background: linear-gradient(135deg, rgba(6, 42, 51, 0.88) 0%, rgba(10, 61, 74, 0.75) 45%, rgba(19, 111, 132, 0.65) 100%),
    radial-gradient(ellipse at 70% 30%, rgba(224, 122, 47, 0.25) 0%, transparent 50%),
    linear-gradient(160deg, #062a33 0%, #0a3d4a 40%, #136f84 100%);
    color: var(--white);
    padding: calc(var(--header-h) + 40px) 0 80px;
}

.hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image: linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: linear-gradient(to bottom, black 40%, transparent 100%);
    pointer-events: none;
}

.hero-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(60px);
    pointer-events: none;
    animation: float 12s ease-in-out infinite;
}

.hero-orb-1 {
    width: 380px;
    height: 380px;
    background: rgba(224, 122, 47, 0.2);
    top: 10%;
    right: 8%;
}

.hero-orb-2 {
    width: 280px;
    height: 280px;
    background: rgba(19, 111, 132, 0.35);
    bottom: 15%;
    left: 5%;
    animation-delay: -4s;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0);
    }
    50% {
        transform: translate(20px, -24px);
    }
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 720px;
}

.hero-brand {
    font-family: var(--font-display);
    font-size: clamp(42px, 7vw, 72px);
    line-height: 1.1;
    margin-bottom: 20px;
    letter-spacing: 0.02em;
    opacity: 0;
    animation: riseIn 0.9s var(--ease) 0.15s forwards;
}

.hero-title {
    font-size: clamp(20px, 2.8vw, 28px);
    font-weight: 400;
    line-height: 1.5;
    margin-bottom: 16px;
    color: rgba(255, 255, 255, 0.95);
    opacity: 0;
    animation: riseIn 0.9s var(--ease) 0.3s forwards;
}

.hero-desc {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.72);
    margin-bottom: 28px;
    max-width: 520px;
    opacity: 0;
    animation: riseIn 0.9s var(--ease) 0.45s forwards;
}

.hero-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 36px;
    opacity: 0;
    animation: riseIn 0.9s var(--ease) 0.55s forwards;
}

.hero-tags span {
    padding: 6px 16px;
    border: 1px solid rgba(255, 255, 255, 0.28);
    border-radius: 4px;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.88);
    background: rgba(255, 255, 255, 0.06);
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    opacity: 0;
    animation: riseIn 0.9s var(--ease) 0.7s forwards;
}

@keyframes riseIn {
    from {
        opacity: 0;
        transform: translateY(28px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-scroll {
    position: absolute;
    bottom: 28px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: rgba(255, 255, 255, 0.55);
    font-size: 12px;
    letter-spacing: 0.1em;
    z-index: 2;
    animation: bounce 2s ease-in-out infinite;
}

.hero-scroll i {
    width: 18px;
    height: 28px;
    border: 1.5px solid rgba(255, 255, 255, 0.4);
    border-radius: 10px;
    position: relative;
}

.hero-scroll i::after {
    content: "";
    position: absolute;
    top: 6px;
    left: 50%;
    width: 3px;
    height: 6px;
    background: rgba(255, 255, 255, 0.6);
    border-radius: 2px;
    transform: translateX(-50%);
    animation: scrollDot 1.8s ease-in-out infinite;
}

@keyframes bounce {
    0%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    50% {
        transform: translateX(-50%) translateY(6px);
    }
}

@keyframes scrollDot {
    0% {
        opacity: 1;
        top: 6px;
    }
    100% {
        opacity: 0;
        top: 14px;
    }
}

/* ---------- Page Banner (inner pages) ---------- */
.page-banner {
    position: relative;
    padding: calc(var(--header-h) + 64px) 0 64px;
    background: linear-gradient(135deg, rgba(6, 42, 51, 0.94), rgba(19, 111, 132, 0.85)),
    linear-gradient(160deg, #062a33, #136f84);
    color: var(--white);
    overflow: hidden;
}

.page-banner::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image: linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
    background-size: 48px 48px;
    opacity: 0.6;
}

.page-banner .container {
    position: relative;
    z-index: 1;
}

.breadcrumb {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 18px;
}

.breadcrumb a:hover {
    color: var(--white);
}

.breadcrumb span {
    opacity: 0.5;
}

.page-banner h1 {
    font-family: var(--font-display);
    font-size: clamp(30px, 4vw, 44px);
    margin-bottom: 12px;
    font-weight: 400;
}

.page-banner p {
    max-width: 560px;
    color: rgba(255, 255, 255, 0.75);
    font-size: 15px;
}

/* ---------- Intro / Features ---------- */
.intro-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.intro-item {
    text-align: center;
    padding: 36px 28px;
    background: var(--white);
    border-radius: var(--radius);
    border: 1px solid var(--line);
    transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease);
}

.intro-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow);
}

.intro-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 20px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--bg-alt), #d4e8ed);
    display: grid;
    place-items: center;
    color: var(--brand-mid);
    font-size: 24px;
    font-weight: 600;
}

.intro-item h3 {
    font-size: 18px;
    color: var(--brand);
    margin-bottom: 10px;
    font-weight: 600;
}

.intro-item p {
    font-size: 14px;
    color: var(--ink-soft);
}

/* ---------- Service Cards ---------- */
.service-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.service-card {
    display: block;
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 32px 28px;
    transition: all 0.35s var(--ease);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--brand-mid), var(--accent));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.35s var(--ease);
}

.service-card:hover {
    border-color: transparent;
    box-shadow: var(--shadow);
    transform: translateY(-4px);
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-card .num {
    font-family: var(--font-display);
    font-size: 32px;
    color: var(--line);
    line-height: 1;
    margin-bottom: 16px;
    transition: color 0.3s;
}

.service-card:hover .num {
    color: var(--brand-mid);
}

.service-card h3 {
    font-size: 18px;
    color: var(--brand);
    margin-bottom: 10px;
    font-weight: 600;
}

.service-card p {
    font-size: 14px;
    color: var(--ink-soft);
    margin-bottom: 18px;
}

.service-card .tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 20px;
}

.service-card .tags span {
    font-size: 12px;
    padding: 3px 10px;
    background: var(--bg-alt);
    color: var(--brand-mid);
    border-radius: 3px;
}

.service-card .more {
    font-size: 14px;
    color: var(--accent);
    font-weight: 500;
}

.service-card .more::after {
    content: " →";
    transition: margin-left 0.25s;
}

.service-card:hover .more::after {
    margin-left: 4px;
}

/* ---------- Case Grid ---------- */
.case-filters {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    margin-bottom: 36px;
}

.case-filters button {
    padding: 8px 20px;
    border: 1px solid var(--line);
    background: var(--white);
    color: var(--ink-soft);
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.25s;
}

.case-filters button:hover,
.case-filters button.is-active {
    background: var(--brand);
    border-color: var(--brand);
    color: var(--white);
}

.case-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.case-card {
    display: block;
    background: var(--white);
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--line);
    transition: all 0.35s var(--ease);
}

.case-card:hover {
    box-shadow: var(--shadow);
    transform: translateY(-4px);
}

.case-thumb {
    aspect-ratio: 16 / 10;
    background: linear-gradient(145deg, var(--brand-deep), var(--brand-mid));
    position: relative;
    display: flex;
    align-items: flex-end;
    padding: 20px;
    overflow: hidden;
}

.case-thumb::after {
    content: attr(data-label);
    position: absolute;
    inset: 0;
    display: grid;
    place-items: center;
    font-family: var(--font-display);
    font-size: 28px;
    color: rgba(255, 255, 255, 0.15);
    letter-spacing: 0.1em;
}

.case-thumb .cat {
    position: relative;
    z-index: 1;
    font-size: 12px;
    padding: 4px 10px;
    background: rgba(255, 255, 255, 0.18);
    backdrop-filter: blur(4px);
    border-radius: 3px;
    color: var(--white);
}

.case-body {
    padding: 22px 22px 26px;
}

.case-body h3 {
    font-size: 17px;
    color: var(--brand);
    margin-bottom: 8px;
    font-weight: 600;
}

.case-body p {
    font-size: 13px;
    color: var(--ink-soft);
    margin-bottom: 14px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.case-meta {
    display: flex;
    gap: 16px;
    font-size: 12px;
    color: var(--muted);
}

/* ---------- Process Steps ---------- */
.process-steps {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 12px;
    position: relative;
}

.process-steps::before {
    content: "";
    position: absolute;
    top: 36px;
    left: 7%;
    right: 7%;
    height: 2px;
    background: linear-gradient(90deg, var(--brand-mid), var(--accent));
    opacity: 0.3;
    z-index: 0;
}

.process-step {
    text-align: center;
    position: relative;
    z-index: 1;
}

.process-step .step-num {
    width: 48px;
    height: 48px;
    margin: 0 auto 16px;
    border-radius: 50%;
    background: var(--white);
    border: 2px solid var(--brand-mid);
    display: grid;
    place-items: center;
    font-family: var(--font-display);
    font-size: 18px;
    color: var(--brand);
    box-shadow: 0 0 0 6px var(--bg);
}

.process-step h4 {
    font-size: 14px;
    color: var(--brand);
    margin-bottom: 6px;
    font-weight: 600;
}

.process-step p {
    font-size: 12px;
    color: var(--muted);
    line-height: 1.5;
}

.process-list {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.process-row {
    display: grid;
    grid-template-columns: 100px 1fr;
    gap: 32px;
    padding: 36px 0;
    border-bottom: 1px solid var(--line);
    align-items: start;
}

.process-row:first-child {
    border-top: 1px solid var(--line);
}

.process-row .step-badge {
    font-family: var(--font-display);
    font-size: 42px;
    color: var(--line);
    line-height: 1;
    transition: color 0.3s;
}

.process-row:hover .step-badge {
    color: var(--brand-mid);
}

.process-row h3 {
    font-size: 20px;
    color: var(--brand);
    margin-bottom: 8px;
}

.process-row p {
    color: var(--ink-soft);
    font-size: 14px;
    max-width: 640px;
}

/* ---------- Advantages ---------- */
.adv-section {
    background: var(--brand-deep);
    color: var(--white);
    position: relative;
    overflow: hidden;
}

.adv-section .section-head .eyebrow {
    color: rgba(224, 122, 47, 0.9);
}

.adv-section .section-head h2 {
    color: var(--white);
}

.adv-section .section-head p {
    color: rgba(255, 255, 255, 0.65);
}

.adv-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 16px;
}

.adv-grid-4 {
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
}

.adv-grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.adv-item {
    text-align: center;
    padding: 28px 16px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius);
    background: rgba(255, 255, 255, 0.04);
    transition: background 0.3s, border-color 0.3s;
}

.adv-item:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(224, 122, 47, 0.4);
}

.adv-item .icon {
    font-size: 28px;
    margin-bottom: 14px;
    color: var(--accent);
    font-family: var(--font-display);
}

.adv-item h4 {
    font-size: 15px;
    margin-bottom: 8px;
    font-weight: 600;
}

.adv-item p {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.55);
    line-height: 1.6;
}

/* ---------- FAQ Accordion ---------- */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    margin-bottom: 12px;
    overflow: hidden;
}

.faq-q {
    width: 100%;
    text-align: left;
    padding: 18px 52px 18px 22px;
    background: transparent;
    border: none;
    cursor: pointer;
    font-size: 15px;
    font-weight: 500;
    color: var(--brand);
    position: relative;
    transition: background 0.25s;
}

.faq-q:hover {
    background: var(--bg-alt);
}

.faq-q::after {
    content: "+";
    position: absolute;
    right: 22px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 22px;
    color: var(--brand-mid);
    font-weight: 300;
    transition: transform 0.3s;
}

.faq-item.is-open .faq-q::after {
    content: "−";
}

.faq-a {
    display: none;
    padding: 0 22px 20px;
    color: var(--ink-soft);
    font-size: 14px;
    line-height: 1.8;
}

.faq-item.is-open .faq-a {
    display: block;
}

/* ---------- CTA Band ---------- */
.cta-band {
    background: linear-gradient(120deg, var(--brand) 0%, var(--brand-mid) 100%);
    color: var(--white);
    padding: 64px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-band::before {
    content: "";
    position: absolute;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background: rgba(224, 122, 47, 0.15);
    top: -120px;
    right: -80px;
    filter: blur(40px);
}

.cta-band .container {
    position: relative;
    z-index: 1;
}

.cta-band h2 {
    font-family: var(--font-display);
    font-size: clamp(26px, 3vw, 36px);
    margin-bottom: 12px;
    font-weight: 400;
}

.cta-band p {
    color: rgba(255, 255, 255, 0.75);
    margin-bottom: 28px;
}

.cta-band .btn-primary {
    background: var(--accent);
}

/* ---------- News ---------- */
.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.news-card {
    display: block;
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    overflow: hidden;
    transition: all 0.35s var(--ease);
}

.news-card:hover {
    box-shadow: var(--shadow);
    transform: translateY(-3px);
}

.news-thumb {
    aspect-ratio: 16 / 9;
    background: linear-gradient(135deg, var(--bg-alt), #c5dce3);
    display: grid;
    place-items: center;
    font-family: var(--font-display);
    font-size: 22px;
    color: var(--brand-mid);
    opacity: 0.5;
}

.news-body {
    padding: 20px 22px 24px;
}

.news-body .tag {
    font-size: 12px;
    color: var(--accent);
    margin-bottom: 8px;
    display: inline-block;
}

.news-body h3 {
    font-size: 16px;
    color: var(--brand);
    margin-bottom: 10px;
    font-weight: 600;
    line-height: 1.45;
}

.news-body p {
    font-size: 13px;
    color: var(--ink-soft);
    margin-bottom: 14px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-body .date {
    font-size: 12px;
    color: var(--muted);
}

.news-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 32px;
}

.news-tags a {
    padding: 6px 16px;
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: 4px;
    font-size: 13px;
    color: var(--ink-soft);
}

.news-tags a:hover,
.news-tags a.is-active {
    background: var(--brand);
    border-color: var(--brand);
    color: var(--white);
}

/* ---------- About ---------- */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
}

.about-visual {
    aspect-ratio: 4 / 3;
    background: linear-gradient(145deg, var(--brand-deep) 0%, var(--brand-mid) 100%);
    border-radius: var(--radius);
    display: grid;
    place-items: center;
    color: rgba(255, 255, 255, 0.2);
    font-family: var(--font-display);
    font-size: 48px;
    position: relative;
    overflow: hidden;
}

.about-visual::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image: linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
    background-size: 32px 32px;
}

.about-text h2 {
    font-family: var(--font-display);
    font-size: clamp(26px, 3vw, 34px);
    color: var(--brand);
    margin-bottom: 16px;
    font-weight: 400;
}

.about-text p {
    color: var(--ink-soft);
    margin-bottom: 14px;
    font-size: 15px;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 32px;
}

.about-stats div {
    text-align: center;
    padding: 20px 12px;
    background: var(--bg-alt);
    border-radius: var(--radius);
}

.about-stats strong {
    display: block;
    font-family: var(--font-display);
    font-size: 32px;
    color: var(--brand-mid);
    line-height: 1.2;
}

.about-stats span {
    font-size: 13px;
    color: var(--muted);
}

.guarantee-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.guarantee-item {
    padding: 28px;
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: var(--radius);
}

.guarantee-item h3 {
    font-size: 17px;
    color: var(--brand);
    margin-bottom: 10px;
}

.guarantee-item p {
    font-size: 14px;
    color: var(--ink-soft);
}

/* ---------- Contact ---------- */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.1fr;
    gap: 40px;
}

.contact-info h2 {
    font-family: var(--font-display);
    font-size: 30px;
    color: var(--brand);
    margin-bottom: 16px;
    font-weight: 400;
}

.contact-info > p {
    color: var(--ink-soft);
    margin-bottom: 32px;
}

.contact-ways {
    display: flex;
    flex-direction: column;
    gap: 18px;
    margin-bottom: 36px;
}

.contact-way {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.contact-way .icon {
    width: 44px;
    height: 44px;
    flex-shrink: 0;
    border-radius: 8px;
    background: var(--bg-alt);
    display: grid;
    place-items: center;
    color: var(--brand-mid);
    font-size: 16px;
    font-weight: 600;
}

.contact-way h4 {
    font-size: 14px;
    color: var(--muted);
    font-weight: 400;
    margin-bottom: 2px;
}

.contact-way p {
    font-size: 16px;
    color: var(--brand);
    font-weight: 500;
}

.social-list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.social-list a {
    padding: 8px 16px;
    border: 1px solid var(--line);
    border-radius: 4px;
    font-size: 13px;
    color: var(--ink-soft);
    background: var(--white);
    transition: all 0.25s;
}

.social-list a:hover {
    border-color: var(--brand-mid);
    color: var(--brand-mid);
}

.qr-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-top: 8px;
}

.qr-card {
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 16px 12px;
    text-align: center;
    transition: box-shadow 0.25s, transform 0.25s;
}

.qr-card:hover {
    box-shadow: var(--shadow-sm);
    transform: translateY(-2px);
}

.qr-card img {
    width: 110px;
    height: 110px;
    object-fit: contain;
    margin: 0 auto 10px;
    background: var(--bg);
    border-radius: 4px;
}

.qr-card h4 {
    font-size: 14px;
    color: var(--brand);
    margin-bottom: 4px;
    font-weight: 600;
}

.qr-card p {
    font-size: 12px;
    color: var(--muted);
    word-break: break-all;
    line-height: 1.4;
}

.contact-form {
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 36px 32px;
    box-shadow: var(--shadow-sm);
}

.contact-form h3 {
    font-size: 20px;
    color: var(--brand);
    margin-bottom: 8px;
}

.contact-form .form-desc {
    font-size: 13px;
    color: var(--muted);
    margin-bottom: 24px;
}

.form-group {
    margin-bottom: 18px;
}

.form-group label {
    display: block;
    font-size: 13px;
    color: var(--ink-soft);
    margin-bottom: 6px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 11px 14px;
    border: 1px solid var(--line);
    border-radius: 4px;
    background: var(--bg);
    color: var(--ink);
    transition: border-color 0.25s, box-shadow 0.25s;
    outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--brand-mid);
    box-shadow: 0 0 0 3px rgba(19, 111, 132, 0.12);
    background: var(--white);
}

.form-group textarea {
    min-height: 120px;
    resize: vertical;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-msg {
    display: none;
    padding: 12px 16px;
    border-radius: 4px;
    font-size: 14px;
    margin-bottom: 16px;
}

.form-msg.is-success {
    display: block;
    background: #e8f7ef;
    color: var(--ok);
}

.form-msg.is-error {
    display: block;
    background: #fef0e8;
    color: var(--accent);
}

/* ---------- Case Detail ---------- */
.detail-layout {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 40px;
    align-items: start;
}

.detail-main h2 {
    font-size: 22px;
    color: var(--brand);
    margin: 32px 0 14px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--line);
}

.detail-main h2:first-child {
    margin-top: 0;
}

.detail-main p,
.detail-main li {
    color: var(--ink-soft);
    font-size: 15px;
    margin-bottom: 10px;
}

.detail-main ul {
    padding-left: 0;
}

.detail-main ul li {
    padding-left: 18px;
    position: relative;
}

.detail-main ul li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 10px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--brand-mid);
}

.feature-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px 24px;
    margin: 16px 0;
}

.shot-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin: 16px 0;
}

.shot-item {
    aspect-ratio: 16 / 10;
    background: linear-gradient(145deg, var(--brand-deep), var(--brand-mid));
    border-radius: var(--radius);
    display: grid;
    place-items: center;
    color: rgba(255, 255, 255, 0.3);
    font-size: 14px;
}

.detail-side {
    position: sticky;
    top: calc(var(--header-h) + 24px);
}

.side-card {
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 24px;
    margin-bottom: 20px;
}

.side-card h3 {
    font-size: 16px;
    color: var(--brand);
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--line);
}

.side-meta li {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    padding: 10px 0;
    border-bottom: 1px dashed var(--line);
    font-size: 13px;
}

.side-meta li:last-child {
    border-bottom: none;
}

.side-meta .label {
    color: var(--muted);
}

.side-meta .val {
    color: var(--brand);
    font-weight: 500;
    text-align: right;
}

/* ---------- Service Detail Content ---------- */
.content-block {
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 40px;
    margin-bottom: 32px;
}

.content-block h2 {
    font-family: var(--font-display);
    font-size: 26px;
    color: var(--brand);
    margin-bottom: 16px;
    font-weight: 400;
}

.content-block h3 {
    font-size: 18px;
    color: var(--brand);
    margin: 28px 0 12px;
}

.content-block p {
    color: var(--ink-soft);
    margin-bottom: 12px;
}

.scene-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-top: 24px;
}

.scene-item {
    padding: 20px;
    background: var(--bg);
    border-radius: var(--radius);
    border: 1px solid var(--line);
}

.scene-item h4 {
    font-size: 15px;
    color: var(--brand);
    margin-bottom: 6px;
}

.scene-item p {
    font-size: 13px;
    margin-bottom: 0;
}

/* ---------- Footer ---------- */
.site-footer {
    background: var(--brand-deep);
    color: rgba(255, 255, 255, 0.7);
    padding: 64px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 48px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand .logo-text {
    color: var(--white);
    margin-bottom: 4px;
}

.footer-brand .logo-text small {
    color: rgba(255, 255, 255, 0.45);
}

.footer-brand p {
    margin-top: 16px;
    font-size: 13px;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.55);
}

.footer-col h4 {
    color: var(--white);
    font-size: 15px;
    margin-bottom: 18px;
    font-weight: 600;
}

.footer-col a {
    display: block;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.55);
    padding: 5px 0;
}

.footer-col a:hover {
    color: var(--accent);
}

.footer-social {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 8px;
}

.footer-social a,
.footer-social span {
    font-size: 12px;
    padding: 5px 12px;
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 3px;
    color: rgba(255, 255, 255, 0.6);
}

.footer-social a:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.footer-bottom {
    padding: 20px 0;
    display: flex;
    flex-direction: column;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    text-align: center;
    gap: 8px;
    font-size: 12px;
    color: rgba(255, 255, 255, 0.4);
}

.footer-bottom a {
    color: rgba(255, 255, 255, 0.55);
}

.footer-bottom a:hover {
    color: var(--accent);
}

.footer-address {
    color: rgba(255, 255, 255, 0.4);
}

/* ---------- Reveal Animation ---------- */
.reveal {
    opacity: 0;
    transform: translateY(32px);
    transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* ---------- Back to top ---------- */
.back-top {
    position: fixed;
    right: 24px;
    bottom: 24px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--brand);
    color: var(--white);
    border: none;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    z-index: 900;
    box-shadow: var(--shadow);
    transition: background 0.25s, transform 0.25s;
}

.back-top:hover {
    background: var(--accent);
    transform: translateY(-2px);
}

.back-top.is-show {
    display: flex;
}

/* ---------- Floating consult ---------- */
.float-consult {
    position: fixed;
    right: 24px;
    bottom: 80px;
    z-index: 900;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.float-consult a {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    background: var(--accent);
    color: var(--white);
    display: grid;
    place-items: center;
    font-size: 12px;
    font-weight: 600;
    box-shadow: var(--shadow);
    text-align: center;
    line-height: 1.2;
    transition: transform 0.25s, background 0.25s;
}

.float-consult a:hover {
    transform: scale(1.06);
    background: var(--accent-hover);
}

/* ---------- Textures ---------- */

/* Tablet */
@media (max-width: 1024px) {
    :root {
        --header-h: 64px;
    }

    .nav-list > li > a {
        padding: 8px 10px;
        font-size: 13px;
    }

    .header-cta .btn {
        padding: 10px 18px;
        font-size: 13px;
    }

    .intro-grid,
    .service-grid,
    .case-grid,
    .news-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .adv-grid {
        grid-template-columns: repeat(4, 1fr);
    }

    .adv-grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }

    .qr-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .process-steps {
        grid-template-columns: repeat(4, 1fr);
        gap: 24px 12px;
    }

    .process-steps::before {
        display: none;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }

    .detail-layout {
        grid-template-columns: 1fr;
    }

    .detail-side {
        position: static;
    }

    .scene-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .about-grid,
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .about-visual {
        max-height: 320px;
    }
}

/* Mobile */
@media (max-width: 768px) {
    .container {
        width: min(100% - 28px, var(--container));
    }

    .section {
        padding: 56px 0;
    }

    .section-sm {
        padding: 40px 0;
    }

    .nav-toggle {
        display: block;
    }

    .header-cta {
        display: none;
    }

    .site-nav {
        position: fixed;
        inset: 0;
        background: rgba(6, 42, 51, 0.4);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s;
        z-index: 999;
    }

    .site-nav.is-open {
        opacity: 1;
        visibility: visible;
    }

    .nav-list {
        position: absolute;
        top: 0;
        right: 0;
        width: min(300px, 85vw);
        height: 100%;
        background: var(--white);
        flex-direction: column;
        align-items: stretch;
        padding: calc(var(--header-h) + 16px) 20px 40px;
        gap: 0;
        overflow-y: auto;
        transform: translateX(100%);
        transition: transform 0.35s var(--ease);
    }

    .site-nav.is-open .nav-list {
        transform: translateX(0);
    }

    .nav-list > li > a {
        padding: 14px 12px;
        font-size: 15px;
        border-bottom: 1px solid var(--line);
        color: var(--ink) !important;
    }

    .site-header.is-home:not(.is-scrolled) .nav-list > li > a {
        color: var(--ink) !important;
    }

    .dropdown {
        position: static;
        transform: none;
        opacity: 1;
        visibility: visible;
        box-shadow: none;
        border: none;
        padding: 0 0 8px 12px;
        display: none;
        min-width: 0;
        background: var(--bg);
        border-radius: 0;
    }

    .nav-list > li.has-sub.is-expanded > .dropdown {
        display: block;
    }

    .nav-list > li:hover > .dropdown {
        transform: none;
    }

    .hero {
        min-height: auto;
        padding: calc(var(--header-h) + 48px) 0 72px;
    }

    .hero-brand {
        font-size: 40px;
    }

    .hero-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .hero-actions .btn {
        width: 100%;
    }

    .intro-grid,
    .service-grid,
    .case-grid,
    .news-grid,
    .guarantee-grid,
    .scene-grid,
    .feature-list,
    .shot-grid {
        grid-template-columns: 1fr;
    }

    .adv-grid,
    .adv-grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }

    .qr-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .process-steps {
        grid-template-columns: 1fr 1fr;
    }

    .process-row {
        grid-template-columns: 1fr;
        gap: 8px;
    }

    .about-stats {
        grid-template-columns: 1fr;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }

    .content-block {
        padding: 24px 20px;
    }

    .float-consult {
        right: 14px;
        bottom: 70px;
    }

    .back-top {
        right: 14px;
        bottom: 14px;
    }

    .page-banner {
        padding: calc(var(--header-h) + 40px) 0 44px;
    }
}

@media (max-width: 480px) {
    .adv-grid,
    .adv-grid-4,
    .qr-grid {
        grid-template-columns: 1fr;
    }

    .process-steps {
        grid-template-columns: 1fr;
    }

    .hero-tags {
        gap: 8px;
    }

    .hero-tags span {
        font-size: 12px;
        padding: 5px 12px;
    }
}