/* ============================================
   柘城县兄弟装饰有限公司 - 官网样式
   现代 · 大气 · 专业
   配色：深青翡翠绿 + 深海军蓝
   ============================================ */

/* ---------- 变量 ---------- */
:root {
    --c-dark:        #08141a;
    --c-dark-2:      #0f2027;
    --c-dark-3:      #16313b;
    --c-dark-4:      #1f414d;
    --c-accent:      #0d9488;
    --c-accent-light:#2dd4bf;
    --c-accent-dark: #0a7068;
    --c-cream:       #f0f5f4;
    --c-white:       #ffffff;
    --c-gray:        #7a8a8a;
    --c-gray-light:  #c8d6d4;
    --c-text:        #1a2e2e;
    --c-text-light:  #4a6262;

    --font-sans:    -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', '微软雅黑', 'Helvetica Neue', Arial, sans-serif;

    --ease:         cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --ease-out:     cubic-bezier(0.16, 1, 0.3, 1);
    --shadow-sm:    0 2px 12px rgba(8,20,26,.08);
    --shadow-md:    0 8px 32px rgba(8,20,26,.12);
    --shadow-lg:    0 20px 60px rgba(8,20,26,.18);
    --shadow-accent: 0 8px 32px rgba(13,148,136,.25);
}

/* ---------- Reset ---------- */
*,*::before,*::after { margin:0; padding:0; box-sizing:border-box; }
html { font-size:16px; scroll-behavior:smooth; -webkit-font-smoothing:antialiased; }
body {
    font-family: var(--font-sans);
    color: var(--c-text);
    background: var(--c-white);
    overflow-x: hidden;
    line-height: 1.75;
}
a { color: inherit; text-decoration: none; transition: color .3s var(--ease); }
img { max-width: 100%; display: block; }
ul, ol { list-style: none; }
button, input, textarea, select {
    font-family: inherit; font-size: inherit; border: none; outline: none; background: none; color: inherit;
}

/* ---------- 通用 ---------- */
.container { max-width: 1280px; margin: 0 auto; padding: 0 32px; }

.section { padding: 120px 0; position: relative; }
.section--dark { background: var(--c-dark); color: var(--c-cream); }
.section--cream { background: var(--c-cream); }

.section-header { text-align: center; margin-bottom: 72px; }
.section-header .eyebrow {
    display: inline-block;
    font-size: .8rem;
    letter-spacing: .35em;
    text-transform: uppercase;
    color: var(--c-accent);
    font-weight: 500;
    margin-bottom: 18px;
}
.section-header h2 {
    font-size: 2.6rem;
    font-weight: 700;
    letter-spacing: .04em;
    line-height: 1.3;
    margin-bottom: 16px;
}
.section--dark .section-header h2 { color: var(--c-white); }
.section-header .divider {
    width: 56px; height: 2px;
    background: var(--c-accent);
    margin: 0 auto 20px;
}
.section-header p {
    font-size: 1.05rem;
    color: var(--c-text-light);
    max-width: 640px;
    margin: 0 auto;
}
.section--dark .section-header p { color: var(--c-gray-light); }

/* 按钮 */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 36px;
    font-size: .95rem;
    font-weight: 500;
    letter-spacing: .08em;
    cursor: pointer;
    transition: all .4s var(--ease-out);
    border-radius: 2px;
    position: relative;
    overflow: hidden;
}
.btn--gold {
    background: linear-gradient(135deg, var(--c-accent) 0%, var(--c-accent-dark) 100%);
    color: var(--c-white);
    box-shadow: var(--shadow-accent);
}
.btn--gold:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 40px rgba(13,148,136,.4);
}
.btn--outline {
    border: 1px solid rgba(255,255,255,.4);
    color: var(--c-white);
    backdrop-filter: blur(6px);
}
.btn--outline:hover {
    border-color: var(--c-accent-light);
    color: var(--c-accent-light);
    background: rgba(13,148,136,.08);
}
.btn--dark {
    background: var(--c-dark);
    color: var(--c-white);
}
.btn--dark:hover { background: var(--c-dark-3); transform: translateY(-2px); }

/* ---------- 滚动进度条 ---------- */
#scroll-progress {
    position: fixed; top: 0; left: 0; height: 3px;
    width: 0%; z-index: 9998;
    background: linear-gradient(90deg, var(--c-accent), var(--c-accent-light));
    transition: width .1s linear;
}

/* ---------- 导航栏 ---------- */
#navbar {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    padding: 24px 0;
    transition: all .4s var(--ease);
}
#navbar.scrolled {
    background: rgba(8,20,26,.92);
    backdrop-filter: blur(20px);
    padding: 16px 0;
    box-shadow: 0 4px 30px rgba(0,0,0,.3);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; }
.nav-logo {
    display: flex; align-items: center; gap: 12px;
    font-size: 1.6rem; font-weight: 700;
    color: var(--c-white);
    letter-spacing: .06em;
}
.nav-logo .logo-mark {
    width: 38px; height: 38px;
    border: 1.5px solid var(--c-accent);
    display: flex; align-items: center; justify-content: center;
    font-size: 1rem; color: var(--c-accent);
    border-radius: 2px;
    transition: all .4s var(--ease);
}
.nav-logo:hover .logo-mark {
    background: var(--c-accent);
    color: var(--c-white);
}
.nav-logo .logo-sub {
    font-size: .7rem; font-weight: 400;
    color: var(--c-gray);
    letter-spacing: .15em;
}

.nav-menu { display: flex; align-items: center; gap: 8px; }
.nav-menu a {
    color: rgba(255,255,255,.75);
    font-size: .92rem; font-weight: 400;
    padding: 8px 18px;
    letter-spacing: .05em;
    position: relative;
    transition: color .3s var(--ease);
}
.nav-menu a::after {
    content: ''; position: absolute; bottom: 2px; left: 50%;
    width: 0; height: 1px;
    background: var(--c-accent);
    transition: all .3s var(--ease);
    transform: translateX(-50%);
}
.nav-menu a:hover { color: var(--c-white); }
.nav-menu a:hover::after { width: 60%; }
.nav-menu a.active { color: var(--c-accent-light); }
.nav-menu a.active::after { width: 60%; }

.nav-cta {
    padding: 10px 28px;
    background: linear-gradient(135deg, var(--c-accent), var(--c-accent-dark));
    color: var(--c-white);
    font-size: .88rem; font-weight: 600;
    letter-spacing: .08em;
    border-radius: 2px;
    transition: all .3s var(--ease);
    cursor: pointer;
}
.nav-cta:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(13,148,136,.4);
}

.nav-toggle {
    display: none; width: 32px; height: 32px;
    flex-direction: column; justify-content: center; gap: 6px;
    cursor: pointer;
}
.nav-toggle span {
    display: block; height: 2px; width: 24px;
    background: var(--c-white); border-radius: 1px;
    transition: all .3s var(--ease);
}
.nav-toggle.active span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

/* ---------- Hero ---------- */
#hero {
    position: relative; min-height: 100vh;
    display: flex; align-items: center;
    overflow: hidden;
}
.hero-bg {
    position: absolute; inset: 0;
    background: url('/assets/images/hero-bg.jpg') center/cover;
    transform: scale(1.1);
    animation: heroZoom 20s ease-out forwards;
}
@keyframes heroZoom { to { transform: scale(1); } }
.hero-overlay {
    position: absolute; inset: 0;
    background: linear-gradient(90deg, rgba(8,20,26,.85) 0%, rgba(8,20,26,.5) 60%, rgba(8,20,26,.65) 100%);
}
.hero-content {
    position: relative; z-index: 2;
    max-width: 760px;
    padding: 0;
}
.hero-eyebrow {
    display: inline-flex; align-items: center; gap: 12px;
    font-size: .82rem; letter-spacing: .3em;
    color: var(--c-accent-light);
    text-transform: uppercase;
    margin-bottom: 28px;
    opacity: 0;
    animation: fadeUp .8s var(--ease-out) .3s forwards;
}
.hero-eyebrow::before, .hero-eyebrow::after {
    content: ''; display: block; width: 32px; height: 1px; background: var(--c-accent-light);
}
.hero-title {
    font-size: 2rem; font-weight: 700;
    line-height: 1.3; letter-spacing: .02em;
    color: var(--c-white);
    margin-bottom: 14px;
    word-break: keep-all;
    opacity: 0;
    animation: fadeUp .8s var(--ease-out) .5s forwards;
}
.hero-title .accent { color: var(--c-accent-light); }
.hero-subtitle {
    font-size: .85rem; line-height: 1.6;
    color: rgba(255,255,255,.7);
    margin-bottom: 28px;
    max-width: 560px;
    word-break: keep-all;
    opacity: 0;
    animation: fadeUp .8s var(--ease-out) .7s forwards;
}
.hero-actions {
    display: flex; gap: 20px; flex-wrap: wrap;
    opacity: 0;
    animation: fadeUp .8s var(--ease-out) .9s forwards;
}

.hero-scroll {
    position: absolute; bottom: 36px; left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    display: flex; flex-direction: column; align-items: center; gap: 10px;
    color: rgba(255,255,255,.5);
    font-size: .75rem; letter-spacing: .2em;
}
.hero-scroll .mouse {
    width: 24px; height: 38px;
    border: 1.5px solid rgba(255,255,255,.3);
    border-radius: 12px;
    position: relative;
}
.hero-scroll .mouse::after {
    content: ''; position: absolute; top: 8px; left: 50%;
    width: 3px; height: 6px;
    background: var(--c-accent-light);
    border-radius: 2px;
    transform: translateX(-50%);
    animation: scrollDot 1.8s ease-in-out infinite;
}
@keyframes scrollDot { 0%{opacity:1;top:8px} 70%{opacity:0;top:20px} 100%{opacity:0;top:8px} }

@keyframes fadeUp { from{opacity:0;transform:translateY(30px)} to{opacity:1;transform:translateY(0)} }

/* ---------- 统计条 ---------- */
#stats {
    background: var(--c-dark);
    padding: 64px 0;
    border-top: 1px solid rgba(13,148,136,.15);
}
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
}
.stat-item {
    text-align: center; padding: 20px;
    border-right: 1px solid rgba(255,255,255,.08);
    position: relative;
}
.stat-item:last-child { border-right: none; }
.stat-num {
    font-size: 3rem; font-weight: 700;
    color: var(--c-accent-light);
    line-height: 1;
    margin-bottom: 10px;
}
.stat-num .unit { font-size: 1.2rem; font-weight: 400; }
.stat-label {
    font-size: .9rem; letter-spacing: .12em;
    color: rgba(255,255,255,.6);
}

/* ---------- 关于我们 ---------- */
#about { background: var(--c-cream); }
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1.1fr;
    gap: 80px;
    align-items: center;
}
.about-image {
    position: relative;
    overflow: hidden;
}
.about-image > img {
    width: 100%;
    height: 560px;
    object-fit: cover;
    object-position: center 30%;
    display: block;
    border-radius: 2px;
    background: #0f2027;
}
.about-image .image-caption {
    position: absolute;
    bottom: 24px;
    left: 24px;
    padding: 8px 14px;
    background: rgba(8, 20, 26, 0.7);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    color: rgba(255,255,255,0.9);
    font-size: .7rem;
    letter-spacing: .25em;
    border-left: 2px solid var(--c-accent);
    pointer-events: none;
}
.about-image .img-placeholder {
    width: 100%; height: 560px;
    border-radius: 2px;
    background:
        linear-gradient(135deg, rgba(13,148,136,.08) 0%, transparent 50%),
        linear-gradient(225deg, rgba(31,65,77,.12) 0%, transparent 50%),
        linear-gradient(180deg, #1a3a42 0%, #0f2027 100%);
    position: relative;
    overflow: hidden;
}
.about-image .img-placeholder::before {
    content: ''; position: absolute; inset: 0;
    background-image:
        repeating-linear-gradient(45deg, transparent, transparent 60px, rgba(13,148,136,.04) 60px, rgba(13,148,136,.04) 61px);
}
.about-image .img-placeholder::after {
    content: '室内设计 · INTERIOR DESIGN';
    position: absolute; bottom: 32px; left: 32px;
    color: rgba(255,255,255,.3);
    font-size: .8rem; letter-spacing: .2em;
}
.about-image .badge {
    position: absolute; bottom: -28px; right: -28px;
    width: 160px; height: 160px;
    background: var(--c-dark);
    border-radius: 50%;
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    color: var(--c-accent-light);
    border: 3px solid var(--c-cream);
}
.about-image .badge .num {
    font-size: 2.4rem; font-weight: 700; line-height: 1;
}
.about-image .badge .text {
    font-size: .75rem; letter-spacing: .1em;
    color: rgba(255,255,255,.7); margin-top: 4px;
}

.about-text .eyebrow {
    display: inline-block;
    font-size: .8rem; letter-spacing: .3em;
    color: var(--c-accent); text-transform: uppercase;
    margin-bottom: 16px;
}
.about-text h2 {
    font-size: 2rem; font-weight: 700;
    line-height: 1.35; margin-bottom: 24px;
    color: var(--c-text);
}
.about-text .lead {
    font-size: 1.05rem; color: var(--c-text-light);
    margin-bottom: 20px; line-height: 1.9;
}
.about-features {
    margin-top: 32px;
    display: grid; grid-template-columns: 1fr 1fr; gap: 16px;
}
.about-feature {
    display: flex; align-items: center; gap: 12px;
    font-size: .92rem; color: var(--c-text);
}
.about-feature .dot {
    width: 8px; height: 8px; border-radius: 50%;
    background: var(--c-accent);
    flex-shrink: 0;
}

/* ---------- 核心业务 ---------- */
#services { background: var(--c-white); }
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}
.service-card {
    position: relative;
    overflow: hidden;
    border-radius: 2px;
    background: var(--c-dark);
    height: 480px;
    cursor: pointer;
    transition: transform .5s var(--ease-out);
}
.service-card:hover { transform: translateY(-8px); }
.service-card .card-bg {
    position: absolute; inset: 0;
    transition: transform .8s var(--ease-out), opacity .5s var(--ease-out);
    opacity: 1;
}
.service-card:hover .card-bg { transform: scale(1.1); opacity: .8; }
.service-card:nth-child(1) .card-bg {
    background: url('/assets/images/service-1.jpg') center/cover;
}
.service-card:nth-child(2) .card-bg {
    background: url('/assets/images/service-2.jpg') center/cover;
}
.service-card:nth-child(3) .card-bg {
    background: url('/assets/images/service-3.jpg') center/cover;
}
.service-card::after {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(to top, rgba(8,20,26,.95) 0%, rgba(8,20,26,.3) 60%, transparent 100%);
}
.service-body {
    position: absolute; bottom: 0; left: 0; right: 0;
    padding: 36px;
    z-index: 2;
}
.service-body .num {
    font-size: .85rem; color: var(--c-accent-light);
    letter-spacing: .15em; margin-bottom: 8px;
}
.service-body h3 {
    font-size: 1.5rem; color: var(--c-white);
    margin-bottom: 12px;
}
.service-body p {
    font-size: .9rem; color: rgba(255,255,255,.65);
    line-height: 1.7;
    max-height: 0; overflow: hidden;
    transition: max-height .5s var(--ease-out);
}
.service-card:hover .service-body p { max-height: 120px; }
.service-body .arrow {
    margin-top: 16px;
    display: inline-flex; align-items: center; gap: 6px;
    font-size: .82rem; color: var(--c-accent-light);
    letter-spacing: .08em;
    opacity: 0; transform: translateY(10px);
    transition: all .4s var(--ease-out) .1s;
}
.service-card:hover .service-body .arrow { opacity: 1; transform: translateY(0); }

/* ---------- 技术优势 ---------- */
#tech { background: var(--c-dark); position: relative; overflow: hidden; }
#tech::before {
    content: ''; position: absolute; top: -200px; right: -200px;
    width: 600px; height: 600px;
    background: radial-gradient(circle, rgba(13,148,136,.08) 0%, transparent 70%);
    border-radius: 50%;
}
.tech-grid {
    display: grid; grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    position: relative; z-index: 1;
}
.tech-item {
    text-align: center; padding: 40px 24px;
    border: 1px solid rgba(255,255,255,.08);
    border-radius: 2px;
    transition: all .4s var(--ease);
    background: rgba(255,255,255,.02);
}
.tech-item:hover {
    border-color: rgba(13,148,136,.3);
    background: rgba(13,148,136,.04);
    transform: translateY(-6px);
}
.tech-icon {
    width: 64px; height: 64px; margin: 0 auto 24px;
    display: flex; align-items: center; justify-content: center;
    border: 1px solid var(--c-accent);
    border-radius: 50%;
    color: var(--c-accent);
    transition: all .4s var(--ease);
}
.tech-item:hover .tech-icon {
    background: var(--c-accent); color: var(--c-white);
    transform: rotate(360deg);
}
.tech-icon svg { width: 28px; height: 28px; }
.tech-item h3 {
    font-size: 1.2rem; color: var(--c-white);
    margin-bottom: 12px;
}
.tech-item p {
    font-size: .88rem; color: var(--c-gray-light);
    line-height: 1.7;
}

/* ---------- 应用领域 ---------- */
#areas { background: var(--c-cream); }
.areas-grid {
    display: grid; grid-template-columns: 1fr 1fr;
    gap: 32px;
}
.area-card {
    position: relative; overflow: hidden;
    height: 420px;
    border-radius: 2px;
    cursor: pointer;
}
.area-card .card-bg {
    position: absolute; inset: 0;
    transition: transform .8s var(--ease-out);
}
.area-card:hover .card-bg { transform: scale(1.08); }
.area-card:nth-child(1) .card-bg {
    background: url('/assets/images/area-1.jpg') center/cover;
}
.area-card:nth-child(2) .card-bg {
    background: url('/assets/images/area-2.jpg') center/cover;
}
.area-card::after {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(to top, rgba(8,20,26,.9) 0%, rgba(8,20,26,.2) 60%);
}
.area-body {
    position: absolute; bottom: 0; left: 0; right: 0;
    padding: 40px; z-index: 2;
}
.area-body .tag {
    display: inline-block;
    font-size: .75rem; letter-spacing: .2em;
    color: var(--c-accent-light);
    border: 1px solid var(--c-accent);
    padding: 4px 14px; border-radius: 2px;
    margin-bottom: 16px;
}
.area-body h3 {
    font-size: 1.8rem; color: var(--c-white);
    margin-bottom: 12px;
}
.area-body p {
    font-size: .92rem; color: rgba(255,255,255,.7);
    line-height: 1.7;
}

/* ---------- 服务流程 ---------- */
#process { background: var(--c-white); }
.process-timeline {
    display: flex; justify-content: center;
    position: relative;
    padding: 40px 0;
}
.process-timeline::before {
    content: ''; position: absolute; top: 80px; left: 10%; right: 10%;
    height: 1px; background: linear-gradient(90deg, transparent, var(--c-accent), transparent);
}
.process-step {
    flex: 1; text-align: center; padding: 0 16px;
    position: relative; z-index: 1;
}
.process-step .circle {
    width: 80px; height: 80px; margin: 0 auto 24px;
    background: var(--c-white);
    border: 2px solid var(--c-accent);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.5rem; color: var(--c-accent);
    font-weight: 700;
    transition: all .4s var(--ease);
    position: relative;
}
.process-step:hover .circle {
    background: var(--c-accent); color: var(--c-white);
    box-shadow: var(--shadow-accent);
}
.process-step h4 {
    font-size: 1.1rem; color: var(--c-text);
    margin-bottom: 8px;
}
.process-step p {
    font-size: .85rem; color: var(--c-text-light);
    line-height: 1.6;
}

/* ---------- 预约表单 ---------- */
#appointment {
    position: relative;
    overflow: hidden;
}
#appointment::before {
    content: ''; position: absolute; inset: 0;
    background:
        radial-gradient(ellipse at 20% 30%, rgba(13,148,136,.1) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 70%, rgba(31,65,77,.15) 0%, transparent 50%),
        linear-gradient(135deg, #08141a 0%, #0f2027 50%, #08141a 100%);
}
#appointment::after {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(135deg, rgba(8,20,26,.88) 0%, rgba(8,20,26,.78) 100%);
}
.appointment-wrap {
    position: relative; z-index: 2;
    display: grid; grid-template-columns: 1fr 1.2fr;
    gap: 60px; align-items: center;
}
.appointment-info .eyebrow {
    font-size: .8rem; letter-spacing: .3em;
    color: var(--c-accent-light); text-transform: uppercase;
    margin-bottom: 16px;
}
.appointment-info h2 {
    font-size: 2.4rem; color: var(--c-white);
    line-height: 1.35; margin-bottom: 24px;
}
.appointment-info p {
    font-size: 1rem; color: rgba(255,255,255,.65);
    line-height: 1.8; margin-bottom: 32px;
}
.appointment-contact { display: flex; flex-direction: column; gap: 20px; }
.contact-item {
    display: flex; align-items: center; gap: 16px;
}
.contact-item .icon {
    width: 44px; height: 44px;
    border: 1px solid rgba(13,148,136,.4);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    color: var(--c-accent-light);
    flex-shrink: 0;
}
.contact-item .icon svg { width: 20px; height: 20px; }
.contact-item .info .label {
    font-size: .75rem; color: rgba(255,255,255,.5);
    letter-spacing: .1em;
}
.contact-item .info .value {
    font-size: 1rem; color: var(--c-white);
}

.appointment-form {
    background: rgba(255,255,255,.04);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255,255,255,.08);
    padding: 48px;
    border-radius: 2px;
}
.appointment-form h3 {
    font-size: 1.5rem; color: var(--c-white);
    margin-bottom: 8px;
}
.appointment-form .form-sub {
    font-size: .85rem; color: rgba(255,255,255,.5);
    margin-bottom: 32px;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form-group { margin-bottom: 20px; }
.form-group label {
    display: block; font-size: .82rem;
    color: rgba(255,255,255,.6);
    margin-bottom: 8px; letter-spacing: .05em;
}
.form-group label .req { color: var(--c-accent-light); }
.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    background: rgba(255,255,255,.03);
    border: 1px solid rgba(255,255,255,.1);
    color: var(--c-white);
    font-size: .92rem;
    border-radius: 2px;
    transition: all .3s var(--ease);
}
.form-group input::placeholder,
.form-group textarea::placeholder {
    color: rgba(255,255,255,.3);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--c-accent);
    background: rgba(13,148,136,.05);
}
.form-group select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%230d9488' d='M6 8L0 0h12z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: 40px;
}
.form-group select option { background: var(--c-dark); color: var(--c-white); }
.form-group textarea { resize: vertical; min-height: 80px; }
.form-submit {
    width: 100%;
    padding: 16px;
    background: linear-gradient(135deg, var(--c-accent), var(--c-accent-dark));
    color: var(--c-white);
    font-size: 1rem; font-weight: 600;
    letter-spacing: .1em;
    cursor: pointer;
    border-radius: 2px;
    transition: all .3s var(--ease);
    margin-top: 8px;
}
.form-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 32px rgba(13,148,136,.4);
}
.form-submit:disabled { opacity: .6; cursor: wait; transform: none; }

.form-msg {
    display: none;
    padding: 12px 16px; border-radius: 2px;
    font-size: .9rem; margin-top: 16px;
    text-align: center;
}
.form-msg.success {
    display: block;
    background: rgba(39,174,96,.15);
    border: 1px solid rgba(39,174,96,.4);
    color: #2ecc71;
}
.form-msg.error {
    display: block;
    background: rgba(231,76,60,.15);
    border: 1px solid rgba(231,76,60,.4);
    color: #e74c3c;
}

/* ---------- 页脚 ---------- */
#footer {
    background: var(--c-dark);
    color: rgba(255,255,255,.6);
    padding: 80px 0 0;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 48px;
    padding-bottom: 60px;
    border-bottom: 1px solid rgba(255,255,255,.08);
}
.footer-brand .nav-logo { margin-bottom: 20px; }
.footer-brand p {
    font-size: .9rem; line-height: 1.8;
    color: rgba(255,255,255,.5);
    margin-bottom: 20px;
}
.footer-brand .slogan {
    font-size: 1rem; color: var(--c-accent-light);
    letter-spacing: .1em;
}
.footer-col h4 {
    font-size: .9rem; color: var(--c-white);
    letter-spacing: .1em; margin-bottom: 24px;
    font-weight: 500;
}
.footer-col ul li { margin-bottom: 12px; }
.footer-col ul li a {
    font-size: .88rem; color: rgba(255,255,255,.5);
    transition: all .3s var(--ease);
}
.footer-col ul li a:hover { color: var(--c-accent-light); padding-left: 4px; }
.footer-contact li {
    display: flex; align-items: flex-start; gap: 10px;
    font-size: .88rem; margin-bottom: 14px;
    color: rgba(255,255,255,.5);
}
.footer-contact li svg { width: 16px; height: 16px; color: var(--c-accent); flex-shrink: 0; margin-top: 4px; }

.footer-bottom {
    padding: 24px 0;
    display: flex; justify-content: space-between; align-items: center;
    font-size: .82rem; color: rgba(255,255,255,.4);
}
.footer-bottom a { color: rgba(255,255,255,.4); }
.footer-bottom a:hover { color: var(--c-accent-light); }

/* ---------- 返回顶部 ---------- */
#back-top {
    position: fixed; bottom: 32px; right: 32px; z-index: 999;
    width: 48px; height: 48px;
    background: var(--c-dark);
    border: 1px solid var(--c-accent);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    color: var(--c-accent);
    cursor: pointer;
    opacity: 0; visibility: hidden;
    transform: translateY(20px);
    transition: all .4s var(--ease);
}
#back-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
#back-top:hover { background: var(--c-accent); color: var(--c-white); }
#back-top svg { width: 20px; height: 20px; }

/* ---------- 滚动动画 ---------- */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity .8s var(--ease-out), transform .8s var(--ease-out);
}
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: .1s; }
.reveal-delay-2 { transition-delay: .2s; }
.reveal-delay-3 { transition-delay: .3s; }
.reveal-delay-4 { transition-delay: .4s; }

/* ---------- 浮动预约按钮(移动端) ---------- */
#float-appointment {
    display: none;
    position: fixed; bottom: 24px; right: 24px; z-index: 998;
    padding: 14px 24px;
    background: linear-gradient(135deg, var(--c-accent), var(--c-accent-dark));
    color: var(--c-white);
    font-size: .9rem; font-weight: 600;
    letter-spacing: .08em;
    border-radius: 40px;
    box-shadow: 0 8px 24px rgba(13,148,136,.4);
    cursor: pointer;
}

/* ---------- 手机端一键拨打电话 ---------- */
#float-call {
    display: none;
    position: fixed; bottom: 24px; left: 24px; z-index: 998;
    display: none;
    align-items: center; gap: 8px;
    padding: 12px 20px;
    background: linear-gradient(135deg, #e74c3c, #c0392b);
    color: var(--c-white);
    font-size: .88rem; font-weight: 600;
    letter-spacing: .06em;
    border-radius: 40px;
    box-shadow: 0 8px 24px rgba(231,76,60,.45);
    cursor: pointer;
    animation: callPulse 2s ease-in-out infinite;
}
#float-call svg { width: 20px; height: 20px; }
#float-call:active { transform: scale(0.95); }
@keyframes callPulse {
    0%, 100% { box-shadow: 0 8px 24px rgba(231,76,60,.45); }
    50% { box-shadow: 0 8px 36px rgba(231,76,60,.7); }
}

/* ---------- FAQ 常见问题 ---------- */
.faq-list {
    max-width: 880px;
    margin: 0 auto;
}
.faq-item {
    border: 1px solid rgba(255,255,255,.08);
    border-radius: 4px;
    margin-bottom: 16px;
    overflow: hidden;
    transition: all .3s var(--ease);
    background: rgba(255,255,255,.02);
}
.faq-item:hover {
    border-color: rgba(13,148,136,.25);
}
.faq-item.open {
    border-color: rgba(13,148,136,.3);
    background: rgba(13,148,136,.04);
}
.faq-q {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 24px 28px;
    cursor: pointer;
    font-size: 1.08rem;
    color: var(--c-white);
    transition: color .3s var(--ease);
}
.faq-q:hover { color: var(--c-accent-light); }
.faq-icon {
    width: 32px; height: 32px;
    border: 1px solid var(--c-accent);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    color: var(--c-accent);
    font-size: .82rem; font-weight: 700;
    flex-shrink: 0;
}
.faq-toggle {
    margin-left: auto;
    font-size: 1.4rem;
    color: var(--c-accent);
    transition: transform .3s var(--ease);
    flex-shrink: 0;
}
.faq-item.open .faq-toggle { transform: rotate(45deg); }
.faq-a {
    max-height: 0;
    overflow: hidden;
    transition: max-height .4s var(--ease);
    padding: 0 28px 0 76px;
}
.faq-item.open .faq-a {
    max-height: 400px;
    padding: 0 28px 24px 76px;
}
.faq-a p {
    font-size: .92rem;
    color: rgba(255,255,255,.65);
    line-height: 1.9;
}

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
    .hero-title { font-size: 2rem; }
    .about-grid { grid-template-columns: 1fr; gap: 48px; }
    .about-image .img-placeholder,
    .about-image > img { height: 400px; }
    .tech-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
    .appointment-wrap { grid-template-columns: 1fr; gap: 40px; }
    .about-text h2 { font-size: 2rem; }
}

@media (max-width: 768px) {
    .section { padding: 80px 0; }
    .container { padding: 0 20px; }
    .section-header { margin-bottom: 48px; }
    .section-header h2 { font-size: 1.8rem; }

    .nav-menu {
        position: fixed; top: 0; right: -100%;
        width: 80%; max-width: 320px; height: 100vh;
        background: var(--c-dark);
        flex-direction: column; align-items: flex-start;
        padding: 100px 32px 32px;
        gap: 8px;
        transition: right .4s var(--ease-out);
        box-shadow: -10px 0 40px rgba(0,0,0,.3);
    }
    .nav-menu.open { right: 0; }
    .nav-menu a { width: 100%; padding: 14px 0; font-size: 1rem; border-bottom: 1px solid rgba(255,255,255,.06); }
    .nav-cta { display: none; }
    .nav-toggle { display: flex; z-index: 1001; }

    .hero-title { font-size: 1.65rem; white-space: nowrap; }
    .hero-subtitle { font-size: .8rem; }
    .hero-actions { flex-direction: column; }
    .hero-actions .btn { width: 100%; justify-content: center; }
    #hero { min-height: 70vh; }
    .hero-eyebrow { font-size: .7rem; letter-spacing: .2em; margin-bottom: 18px; }
    .hero-scroll { display: none; }

    .about-text h2 { font-size: 1.5rem; line-height: 1.4; }
    .about-text .lead { font-size: .92rem; }

    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .stat-item:nth-child(2) { border-right: none; }
    .stat-item:nth-child(1), .stat-item:nth-child(2) { border-bottom: 1px solid rgba(255,255,255,.08); }
    .stat-num { font-size: 2.2rem; }

    .services-grid { grid-template-columns: 1fr; }
    .service-card { height: 380px; }

    .tech-grid { grid-template-columns: 1fr; }

    .areas-grid { grid-template-columns: 1fr; }
    .area-card { height: 320px; }

    .process-timeline { flex-direction: column; gap: 32px; }
    .process-timeline::before { display: none; }

    .faq-q { font-size: .95rem; padding: 18px 20px; gap: 12px; }
    .faq-a { padding: 0 20px 0 64px; }
    .faq-item.open .faq-a { padding: 0 20px 20px 64px; }
    .faq-icon { width: 28px; height: 28px; }

    .appointment-form { padding: 32px 24px; }
    .form-row { grid-template-columns: 1fr; }

    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
    .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }

    #float-appointment { display: block; }
    #float-call { display: flex; }
    #back-top { bottom: 80px; }
}

@media (max-width: 480px) {
    .hero-title { font-size: 1.35rem; }
    .section-header h2 { font-size: 1.5rem; }
    .about-image .badge { width: 120px; height: 120px; bottom: -20px; right: -12px; }
    .about-image .badge .num { font-size: 1.8rem; }
    .appointment-info h2 { font-size: 1.6rem; }
    .about-text h2 { font-size: 1.3rem; }
}

/* ==================== 服务详情页 ==================== */

/* service-card 修改为可点击 */
.service-card {
    text-decoration: none;
    color: inherit;
    cursor: pointer;
}

/* 详情页 Hero */
#service-hero {
    position: relative;
    min-height: 420px;
    display: flex;
    align-items: center;
    overflow: hidden;
    margin-top: 72px;
}
.service-hero-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    transform: scale(1.05);
    animation: heroZoom 20s ease-out forwards;
}
.service-hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(8,20,26,.85) 0%, rgba(8,20,26,.5) 60%, rgba(8,20,26,.75) 100%);
}
.service-hero-content {
    position: relative;
    z-index: 2;
    padding: 80px 0;
}
.service-eyebrow {
    font-size: .82rem;
    letter-spacing: .3em;
    color: var(--c-accent-light);
    text-transform: uppercase;
    margin-bottom: 20px;
}
.service-hero-title {
    font-size: 2.8rem;
    font-weight: 700;
    color: var(--c-white);
    margin-bottom: 16px;
    line-height: 1.3;
}
.service-hero-subtitle {
    font-size: 1.05rem;
    color: rgba(255,255,255,.75);
    max-width: 600px;
    line-height: 1.7;
}

/* 服务介绍 */
.service-detail-intro {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}
.service-intro-text .lead {
    font-size: 1rem;
    line-height: 1.9;
    color: var(--c-text);
    margin-bottom: 28px;
}
.service-intro-image img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: 12px;
    box-shadow: 0 20px 60px rgba(0,0,0,.15);
}

/* 服务特色 */
.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 28px;
}
.feature-card {
    background: var(--c-white);
    padding: 36px 24px;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 4px 20px rgba(0,0,0,.05);
    transition: transform .4s var(--ease-out), box-shadow .4s var(--ease-out);
}
.feature-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 40px rgba(0,0,0,.1);
}
.feature-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--c-accent), var(--c-accent-dark));
    border-radius: 14px;
}
.feature-icon svg {
    width: 28px;
    height: 28px;
    color: var(--c-white);
}
.feature-card h3 {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--c-text);
    margin-bottom: 12px;
}
.feature-card p {
    font-size: .88rem;
    color: var(--c-text-2);
    line-height: 1.7;
}

/* 服务流程 */
.steps-timeline {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    counter-reset: step;
}
.step-item {
    display: flex;
    gap: 20px;
    align-items: flex-start;
    padding: 28px;
    background: var(--c-white);
    border-radius: 12px;
    border-left: 3px solid var(--c-accent);
    box-shadow: 0 2px 12px rgba(0,0,0,.04);
}
.step-num {
    font-size: 2rem;
    font-weight: 800;
    color: var(--c-accent);
    line-height: 1;
    flex-shrink: 0;
}
.step-body h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--c-text);
    margin-bottom: 8px;
}
.step-body p {
    font-size: .85rem;
    color: var(--c-text-2);
    line-height: 1.6;
}

/* 服务范围 */
.scope-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}
.scope-item {
    padding: 32px;
    background: var(--c-white);
    border-radius: 12px;
    box-shadow: 0 2px 12px rgba(0,0,0,.04);
    transition: transform .3s var(--ease-out);
}
.scope-item:hover {
    transform: translateY(-4px);
}
.scope-item h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--c-accent);
    margin-bottom: 12px;
}
.scope-item p {
    font-size: .9rem;
    color: var(--c-text-2);
    line-height: 1.7;
}

/* 常见问题 */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}
.faq-item {
    margin-bottom: 16px;
    background: var(--c-white);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0,0,0,.04);
}
.faq-q {
    padding: 20px 24px;
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    font-weight: 600;
    color: var(--c-text);
    font-size: .95rem;
    user-select: none;
    transition: background .2s;
}
.faq-q:hover {
    background: rgba(13,148,136,.04);
}
.faq-icon {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--c-accent);
    color: var(--c-white);
    border-radius: 6px;
    font-size: .8rem;
    font-weight: 700;
    flex-shrink: 0;
}
.faq-icon-a {
    background: var(--c-accent-dark);
}
.faq-toggle {
    margin-left: auto;
    font-size: 1.2rem;
    color: var(--c-accent);
    transition: transform .3s;
}
.faq-q.open .faq-toggle {
    transform: rotate(45deg);
}
.faq-a {
    padding: 0 24px 20px 64px;
    display: flex;
    gap: 12px;
    align-items: flex-start;
    color: var(--c-text-2);
    font-size: .9rem;
    line-height: 1.7;
}

/* CTA */
.cta-wrap {
    text-align: center;
    padding: 60px 0;
}
.cta-wrap h2 {
    font-size: 2rem;
    color: var(--c-white);
    margin-bottom: 16px;
}
.cta-wrap p {
    color: rgba(255,255,255,.7);
    font-size: 1rem;
    margin-bottom: 32px;
}
.cta-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

/* 详情页响应式 */
@media (max-width: 1024px) {
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .steps-timeline { grid-template-columns: repeat(2, 1fr); }
    .service-detail-intro { grid-template-columns: 1fr; gap: 40px; }
}

@media (max-width: 768px) {
    #service-hero { min-height: 320px; margin-top: 60px; }
    .service-hero-title { font-size: 1.8rem; }
    .service-hero-subtitle { font-size: .9rem; }
    .service-hero-content { padding: 50px 0; }
    .features-grid { grid-template-columns: 1fr; }
    .steps-timeline { grid-template-columns: 1fr; }
    .scope-grid { grid-template-columns: 1fr; }
    .service-intro-image img { height: 280px; }
    .cta-wrap h2 { font-size: 1.5rem; }
    .cta-actions { flex-direction: column; }
    .cta-actions .btn { width: 100%; justify-content: center; }
}

@media (max-width: 480px) {
    .service-hero-title { font-size: 1.5rem; }
    .step-item { flex-direction: column; gap: 12px; }
    .faq-a { padding-left: 24px; }
}