/* ============================================================
   css/style.css — Pamel 主样式 (暖色橙)
   全部使用系统无衬线字体 · 黑白灰 + 橙 #FF8D28 / #FF6600
   ============================================================ */

/* ===== 全局重置 ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
html {
    scroll-behavior: smooth;
}
body {
    font-family:
        -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
        Arial, sans-serif;
    background: #0a0a0c;
    color: #f0f0f0;
    overflow-x: hidden;
    line-height: 1.6;
}

/* ===== 配色系统 (暖色橙) ===== */
:root {
    --bg-dark: #0a0a0c;
    --bg-dark-card: #141418;
    --bg-light: #f5f5f7;
    --bg-light-card: #ffffff;
    --text-light: #ffffff;
    --text-dark: #1a1a1e;
    --text-muted-light: rgba(255, 255, 255, 0.6);
    --text-muted-dark: rgba(0, 0, 0, 0.5);
    --border-light: rgba(255, 255, 255, 0.06);
    --border-dark: rgba(0, 0, 0, 0.06);
    --shadow-dark: 0 20px 60px rgba(0, 0, 0, 0.3);
    --shadow-light: 0 20px 60px rgba(0, 0, 0, 0.04);
    --primary: #ff8d28;
    --primary-dark: #ff6600;
    --primary-glow: rgba(255, 141, 40, 0.15);
}

/* ===== 滚动条 ===== */
::-webkit-scrollbar {
    width: 4px;
}
::-webkit-scrollbar-track {
    background: var(--bg-dark);
}
::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: 4px;
}

/* ============================================================ */
/* 欢迎页 (Splash) */
/* ============================================================ */
#splash {
    position: fixed;
    inset: 0;
    z-index: 9999;
    background: var(--bg-dark);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    transition:
        opacity 1.2s cubic-bezier(0.23, 1, 0.32, 1),
        transform 1.2s cubic-bezier(0.23, 1, 0.32, 1);
    will-change: opacity, transform;
    padding: 2rem;
    overflow: hidden;
}
#splash.hide {
    opacity: 0;
    transform: scale(1.02);
    pointer-events: none;
}

/* ===== 动态背景 ===== */
.splash-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
    overflow: hidden;
    pointer-events: none;
}

.bg-line {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 60%;
    opacity: 0.08;
    animation: flowLine 12s ease-in-out infinite alternate;
}
.bg-line path {
    fill: var(--primary);
}
.bg-line path:nth-child(1) {
    animation: wave1 14s ease-in-out infinite alternate;
}
.bg-line path:nth-child(2) {
    animation: wave2 16s ease-in-out infinite alternate;
    opacity: 0.6;
}
.bg-line path:nth-child(3) {
    animation: wave3 18s ease-in-out infinite alternate;
    opacity: 0.3;
}

@keyframes wave1 {
    0% {
        d: path(
            "M0,60 Q15,40 30,55 Q45,70 60,50 Q75,30 90,45 Q100,52 100,60 L100,100 L0,100 Z"
        );
    }
    50% {
        d: path(
            "M0,50 Q20,70 35,45 Q50,30 65,55 Q80,70 95,40 Q100,35 100,50 L100,100 L0,100 Z"
        );
    }
    100% {
        d: path(
            "M0,65 Q10,45 25,60 Q40,75 55,45 Q70,25 85,50 Q95,60 100,55 L100,100 L0,100 Z"
        );
    }
}
@keyframes wave2 {
    0% {
        d: path(
            "M0,70 Q20,50 40,65 Q60,80 80,55 Q95,35 100,45 L100,100 L0,100 Z"
        );
    }
    50% {
        d: path(
            "M0,80 Q25,55 45,70 Q65,85 85,50 Q95,30 100,55 L100,100 L0,100 Z"
        );
    }
    100% {
        d: path(
            "M0,60 Q15,70 35,50 Q55,35 75,60 Q90,75 100,50 L100,100 L0,100 Z"
        );
    }
}
@keyframes wave3 {
    0% {
        d: path("M0,80 Q25,60 50,75 Q75,90 100,65 L100,100 L0,100 Z");
    }
    50% {
        d: path("M0,90 Q30,70 55,85 Q80,95 100,75 L100,100 L0,100 Z");
    }
    100% {
        d: path(
            "M0,70 Q20,80 45,65 Q70,50 90,70 Q100,78 100,70 L100,100 L0,100 Z"
        );
    }
}

@keyframes flowLine {
    0% {
        transform: translateX(-2%) scaleX(1.02);
    }
    100% {
        transform: translateX(2%) scaleX(0.98);
    }
}

.bg-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 141, 40, 0.015) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 141, 40, 0.015) 1px, transparent 1px);
    background-size: 60px 60px;
    animation: gridPulse 8s ease-in-out infinite;
}
@keyframes gridPulse {
    0%,
    100% {
        opacity: 0.4;
        background-size: 60px 60px;
    }
    50% {
        opacity: 0.8;
        background-size: 70px 70px;
    }
}

.bg-dots {
    position: absolute;
    inset: 0;
}
.bg-dots .dot {
    position: absolute;
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: var(--primary);
    opacity: 0.12;
    animation: dotFloat 6s ease-in-out infinite;
}
.bg-dots .dot::after {
    content: "";
    position: absolute;
    inset: -6px;
    border-radius: 50%;
    border: 1px solid rgba(255, 141, 40, 0.04);
    animation: dotRing 4s ease-in-out infinite;
}
@keyframes dotFloat {
    0%,
    100% {
        transform: translate(0, 0) scale(1);
        opacity: 0.08;
    }
    25% {
        transform: translate(8px, -12px) scale(1.3);
        opacity: 0.2;
    }
    50% {
        transform: translate(-4px, 10px) scale(0.9);
        opacity: 0.12;
    }
    75% {
        transform: translate(12px, 6px) scale(1.1);
        opacity: 0.18;
    }
}
@keyframes dotRing {
    0%,
    100% {
        transform: scale(1);
        opacity: 0.4;
    }
    50% {
        transform: scale(2.5);
        opacity: 0;
    }
}

.bg-connections {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    opacity: 0.04;
}
.bg-connections .conn-group line {
    stroke: var(--primary);
    stroke-width: 0.5;
    animation: connPulse 7s ease-in-out infinite;
}
.bg-connections .conn-group line:nth-child(1) {
    animation-delay: 0s;
}
.bg-connections .conn-group line:nth-child(2) {
    animation-delay: 0.6s;
}
.bg-connections .conn-group line:nth-child(3) {
    animation-delay: 1.2s;
}
.bg-connections .conn-group line:nth-child(4) {
    animation-delay: 0.3s;
}
.bg-connections .conn-group line:nth-child(5) {
    animation-delay: 0.9s;
}
.bg-connections .conn-group line:nth-child(6) {
    animation-delay: 1.5s;
}
.bg-connections .conn-group line:nth-child(7) {
    animation-delay: 0.5s;
}
.bg-connections .conn-group line:nth-child(8) {
    animation-delay: 1.1s;
}
.bg-connections .conn-group line:nth-child(9) {
    animation-delay: 0.2s;
}
.bg-connections .conn-group line:nth-child(10) {
    animation-delay: 0.8s;
}
.bg-connections .conn-group line:nth-child(11) {
    animation-delay: 1.4s;
}
.bg-connections .conn-group line:nth-child(12) {
    animation-delay: 0.4s;
}
.bg-connections .conn-group line:nth-child(13) {
    animation-delay: 1s;
}
.bg-connections .conn-group line:nth-child(14) {
    animation-delay: 1.6s;
}

@keyframes connPulse {
    0%,
    100% {
        opacity: 0.2;
        stroke-width: 0.3;
    }
    50% {
        opacity: 0.8;
        stroke-width: 0.8;
    }
}

.bg-aura {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 80%;
    height: 80%;
    transform: translate(-50%, -50%);
    background: radial-gradient(
        ellipse at center,
        rgba(255, 141, 40, 0.04) 0%,
        transparent 70%
    );
    animation: auraBreathe 6s ease-in-out infinite;
}
@keyframes auraBreathe {
    0%,
    100% {
        transform: translate(-50%, -50%) scale(1);
        opacity: 0.4;
    }
    50% {
        transform: translate(-50%, -50%) scale(1.2);
        opacity: 0.8;
    }
}

/* ===== Logo 区域 ===== */
.splash-logo-wrap {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}
.splash-logo-anim {
    display: flex;
    align-items: center;
    justify-content: center;
    animation: breatheScale 4.5s ease-in-out infinite;
}
.splash-logo-img {
    width: 120px;
    height: 120px;
    display: block;
    filter: none;
}
@keyframes breatheScale {
    0% {
        transform: scale(0.94);
        opacity: 0.8;
    }
    45% {
        transform: scale(1.06);
        opacity: 1;
    }
    65% {
        transform: scale(1.06);
        opacity: 1;
    }
    100% {
        transform: scale(0.94);
        opacity: 0.8;
    }
}
.splash-logo-text {
    font-family:
        -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
        Arial, sans-serif;
    font-weight: 600;
    font-size: 2.4rem;
    letter-spacing: 0.06em;
    color: #ffffff;
    margin-top: 0.8rem;
    animation: none;
    transform: none;
}
.splash-hint {
    font-family:
        -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
        Arial, sans-serif;
    font-weight: 300;
    font-size: 0.7rem;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.2);
    margin-top: 1.8rem;
    animation: pulseHint 2.8s ease-in-out infinite;
}
@keyframes pulseHint {
    0%,
    100% {
        opacity: 0.15;
    }
    50% {
        opacity: 0.5;
    }
}

/* ============================================================ */
/* 主内容 */
/* ============================================================ */
#main-content {
    display: none;
    opacity: 0;
    transition: opacity 1.2s ease;
}
#main-content.show {
    display: block;
    opacity: 1;
}

/* ===== 通用 ===== */
.container {
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 2.5rem;
}
.section-padding {
    padding: 6rem 0;
}
@media (min-width: 768px) {
    .section-padding {
        padding: 8rem 0;
    }
}

.section-label {
    font-size: 0.7rem;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    font-weight: 400;
    color: var(--text-muted-light);
    display: inline-block;
    margin-bottom: 0.5rem;
}
.section-title {
    font-weight: 700;
    font-size: 3rem;
    line-height: 1.1;
    letter-spacing: -0.02em;
    font-family:
        -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
        Arial, sans-serif;
}
.section-title .highlight {
    color: var(--primary);
}
@media (min-width: 768px) {
    .section-title {
        font-size: 4.2rem;
    }
}
.section-desc {
    font-size: 1.1rem;
    max-width: 560px;
    line-height: 1.8;
    color: var(--text-muted-light);
    font-family:
        -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
        Arial, sans-serif;
}
.divider {
    width: 70px;
    height: 2px;
    background: rgba(255, 255, 255, 0.12);
    border-radius: 1px;
    margin: 1.2rem 0 1.8rem;
}
.divider-light {
    background: rgba(0, 0, 0, 0.08);
}
.divider-center {
    margin-left: auto;
    margin-right: auto;
}
.section-head {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 4rem;
}
.section-head .section-desc {
    margin: 0 auto;
}
.relative {
    position: relative;
}
.z-10 {
    z-index: 10;
}

/* ===== 按钮 ===== */
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    padding: 1rem 3.2rem;
    border-radius: 60px;
    font-weight: 500;
    font-size: 0.95rem;
    letter-spacing: 0.04em;
    background: var(--primary);
    color: #ffffff;
    border: none;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
    text-decoration: none;
    box-shadow: 0 4px 24px var(--primary-glow);
    font-family:
        -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
        Arial, sans-serif;
}
.btn-primary:hover {
    transform: translateY(-3px);
    background: var(--primary-dark);
    box-shadow: 0 16px 48px rgba(255, 141, 40, 0.25);
}
.btn-outline {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.95rem 3rem;
    border-radius: 60px;
    font-weight: 400;
    font-size: 0.95rem;
    letter-spacing: 0.04em;
    border: 1.5px solid rgba(255, 255, 255, 0.2);
    color: #ffffff;
    background: transparent;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
    text-decoration: none;
    font-family:
        -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
        Arial, sans-serif;
}
.btn-outline:hover {
    border-color: var(--primary);
    background: rgba(255, 141, 40, 0.06);
    transform: translateY(-3px);
}

.btn-primary-dark {
    background: #1a1a1e;
    color: #ffffff;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.1);
}
.btn-primary-dark:hover {
    background: var(--primary);
    box-shadow: 0 16px 48px var(--primary-glow);
}
.btn-outline-dark {
    border-color: rgba(0, 0, 0, 0.15);
    color: #1a1a1e;
}
.btn-outline-dark:hover {
    border-color: var(--primary);
    background: rgba(255, 141, 40, 0.04);
}

/* ============================================================ */
/* HEADER */
/* ============================================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(10, 10, 12, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-light);
    transition: all 0.3s ease;
    height: 76px;
    display: flex;
    align-items: center;
}
.header.scrolled {
    background: rgba(10, 10, 12, 0.96);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
}
.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
}
.header-logo {
    display: flex;
    align-items: center;
    gap: 0.7rem;
    text-decoration: none;
    color: #ffffff;
}
.header-logo-img {
    height: 36px;
    width: auto;
    display: block;
}
.header-logo-text {
    font-family:
        -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
        Arial, sans-serif;
    font-weight: 600;
    font-size: 1.3rem;
    letter-spacing: 0.04em;
    color: #ffffff;
}
@media (max-width: 480px) {
    .header-logo-text {
        font-size: 1rem;
    }
    .header-logo-img {
        height: 28px;
    }
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2.5rem;
    list-style: none;
}
.nav-links a {
    color: var(--text-muted-light);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 400;
    letter-spacing: 0.04em;
    transition: color 0.3s ease;
    position: relative;
    font-family:
        -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
        Arial, sans-serif;
}
.nav-links a::after {
    content: "";
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1.5px;
    background: var(--primary);
    transition: width 0.3s ease;
}
.nav-links a:hover {
    color: #ffffff;
}
.nav-links a:hover::after {
    width: 100%;
}
.nav-links .btn-nav {
    padding: 0.4rem 1.6rem;
    border-radius: 60px;
    background: rgba(255, 141, 40, 0.12);
    border: 1px solid rgba(255, 141, 40, 0.15);
    color: #ffffff;
    font-size: 0.8rem;
    font-weight: 500;
    transition: all 0.3s ease;
}
.nav-links .btn-nav:hover {
    background: rgba(255, 141, 40, 0.2);
    border-color: var(--primary);
}
.nav-links .btn-nav::after {
    display: none;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: #ffffff;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.3rem;
}
@media (max-width: 768px) {
    .menu-toggle {
        display: block;
    }
    .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 76px;
        left: 0;
        right: 0;
        background: var(--bg-dark);
        padding: 2rem 2.5rem;
        border-bottom: 1px solid var(--border-light);
        gap: 1.2rem;
        align-items: flex-start;
    }
    .nav-links.open {
        display: flex;
    }
    .nav-links .btn-nav {
        margin-top: 0.5rem;
    }
}

/* ============================================================ */
/* HERO */
/* ============================================================ */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding: 8rem 0 4rem;
    background: var(--bg-dark);
}
.hero-glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(140px);
    pointer-events: none;
    opacity: 0.05;
}
.hero-glow-1 {
    width: 600px;
    height: 600px;
    top: -250px;
    right: -150px;
    background: radial-gradient(
        circle,
        rgba(255, 141, 40, 0.2),
        transparent 70%
    );
}
.hero-glow-2 {
    width: 500px;
    height: 500px;
    bottom: -150px;
    left: -100px;
    background: radial-gradient(
        circle,
        rgba(255, 102, 0, 0.1),
        transparent 70%
    );
}

.hero-title {
    font-family:
        -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
        Arial, sans-serif;
    font-weight: 700;
    font-size: 4rem;
    line-height: 1.05;
    color: #ffffff;
    letter-spacing: -0.02em;
}
.hero-title .highlight {
    color: var(--primary);
}
@media (min-width: 768px) {
    .hero-title {
        font-size: 5.6rem;
    }
}
@media (min-width: 1024px) {
    .hero-title {
        font-size: 7rem;
    }
}

.hero-sub {
    color: var(--text-muted-light);
    font-size: 1.2rem;
    max-width: 540px;
    line-height: 1.9;
    margin-top: 0.5rem;
    font-family:
        -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
        Arial, sans-serif;
}
.hero-sub strong {
    color: #ffffff;
    font-weight: 500;
}
.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1.2rem;
    margin-top: 2.8rem;
}
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 60px;
    padding: 0.3rem 1.4rem 0.3rem 0.8rem;
    margin-bottom: 2rem;
}
.hero-badge .dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--primary);
    opacity: 0.6;
    display: inline-block;
}
.hero-badge span {
    font-size: 0.65rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--text-muted-light);
    font-weight: 400;
    font-family:
        -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
        Arial, sans-serif;
}
.hero-trust {
    margin-top: 4rem;
    display: flex;
    align-items: center;
    gap: 2rem;
    border-top: 1px solid var(--border-light);
    padding-top: 2.5rem;
}
.trust-avatars {
    display: flex;
    gap: 0.5rem;
}
.trust-avatars span {
    display: inline-block;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 2px solid var(--bg-dark);
    background: rgba(255, 255, 255, 0.04);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    color: rgba(255, 255, 255, 0.4);
    font-weight: 500;
    font-family:
        -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
        Arial, sans-serif;
}
.trust-avatars span:nth-child(2) {
    background: rgba(255, 255, 255, 0.03);
}
.trust-avatars span:nth-child(3) {
    background: rgba(255, 255, 255, 0.02);
}
.trust-avatars span:nth-child(4) {
    background: rgba(255, 255, 255, 0.01);
}
.trust-text {
    color: var(--text-muted-light);
    font-size: 0.9rem;
    font-family:
        -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
        Arial, sans-serif;
}
.trust-text strong {
    color: #ffffff;
    font-weight: 600;
}

/* ============================================================ */
/* 浅色区块 */
/* ============================================================ */
.section-light {
    background: var(--bg-light);
    color: var(--text-dark);
}
.section-light .section-label {
    color: var(--text-muted-dark);
}
.section-light .section-title {
    color: var(--text-dark);
}
.section-light .section-title .highlight {
    color: var(--primary);
}
.section-light .section-desc {
    color: var(--text-muted-dark);
}
.section-light .divider {
    background: rgba(0, 0, 0, 0.08);
}
.section-light .hero-sub {
    color: var(--text-muted-dark);
}
.section-light .hero-sub strong {
    color: var(--text-dark);
}
.section-light .hero-badge {
    border-color: rgba(0, 0, 0, 0.04);
    background: rgba(0, 0, 0, 0.02);
}
.section-light .hero-badge .dot {
    background: var(--primary);
}
.section-light .hero-badge span {
    color: var(--text-muted-dark);
}

/* ===== 服务卡片 ===== */
.service-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}
@media (min-width: 640px) {
    .service-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (min-width: 1024px) {
    .service-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}
.service-card {
    background: var(--bg-light-card);
    border: 1px solid rgba(0, 0, 0, 0.04);
    border-radius: 24px;
    padding: 2.5rem 2rem;
    transition: all 0.5s cubic-bezier(0.23, 1, 0.32, 1);
    box-shadow: var(--shadow-light);
}
.service-card:hover {
    transform: translateY(-8px);
    border-color: rgba(255, 141, 40, 0.12);
    box-shadow: 0 32px 80px rgba(0, 0, 0, 0.06);
}
.service-card .icon-box {
    width: 52px;
    height: 52px;
    border-radius: 14px;
    background: rgba(255, 141, 40, 0.04);
    border: 1px solid rgba(255, 141, 40, 0.06);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    color: var(--primary);
    margin-bottom: 1.2rem;
    transition: all 0.4s ease;
}
.service-card:hover .icon-box {
    background: rgba(255, 141, 40, 0.08);
    border-color: rgba(255, 141, 40, 0.12);
}
.service-card h3 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
    font-family:
        -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
        Arial, sans-serif;
}
.service-card p {
    color: var(--text-muted-dark);
    font-size: 0.95rem;
    line-height: 1.7;
    font-family:
        -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
        Arial, sans-serif;
}
.service-card .learn-more {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    color: var(--primary);
    font-size: 0.85rem;
    font-weight: 500;
    margin-top: 1.2rem;
    transition: gap 0.3s ease;
    cursor: pointer;
    font-family:
        -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
        Arial, sans-serif;
}
.service-card .learn-more:hover {
    gap: 0.8rem;
}

/* ===== 统计 ===== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 3rem 2rem;
    text-align: center;
}
@media (min-width: 640px) {
    .stats-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 2rem;
    }
}
.stat-number {
    font-family:
        -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
        Arial, sans-serif;
    font-weight: 700;
    font-size: 3.2rem;
    color: #ffffff;
    line-height: 1;
    letter-spacing: -0.02em;
}
@media (min-width: 768px) {
    .stat-number {
        font-size: 4.4rem;
    }
}
.stat-label {
    color: var(--text-muted-light);
    font-size: 0.8rem;
    letter-spacing: 0.1em;
    margin-top: 0.4rem;
    text-transform: uppercase;
    font-weight: 300;
    font-family:
        -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
        Arial, sans-serif;
}

/* ===== 关于 ===== */
.about-grid {
    display: grid;
    gap: 3rem;
}
@media (min-width: 1024px) {
    .about-grid {
        grid-template-columns: 1fr 1fr;
        gap: 5rem;
        align-items: center;
    }
}
.about-image {
    background: var(--bg-light-card);
    border: 1px solid rgba(0, 0, 0, 0.04);
    border-radius: 24px;
    aspect-ratio: 4/3;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-light);
}
.about-image-inner {
    text-align: center;
    padding: 2rem;
}
.about-image-inner i {
    font-size: 5rem;
    color: var(--primary);
    opacity: 0.08;
}
.about-image-inner p {
    color: var(--text-muted-dark);
    font-size: 0.75rem;
    letter-spacing: 0.2em;
    margin-top: 1rem;
    text-transform: uppercase;
    font-family:
        -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
        Arial, sans-serif;
}
.about-image .deco-line {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(
        90deg,
        transparent,
        var(--primary),
        transparent
    );
    opacity: 0.15;
}
.about-text {
    color: var(--text-muted-dark);
    font-size: 1.05rem;
    line-height: 1.9;
    font-family:
        -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
        Arial, sans-serif;
}
.about-text strong {
    color: var(--text-dark);
    font-weight: 500;
}
.about-text p {
    margin-bottom: 1.2rem;
}
.about-text p:last-child {
    margin-bottom: 0;
}
.about-tag {
    display: inline-block;
    background: rgba(255, 141, 40, 0.04);
    border: 1px solid rgba(255, 141, 40, 0.06);
    border-radius: 60px;
    padding: 0.15rem 1.2rem;
    font-size: 0.7rem;
    letter-spacing: 0.15em;
    color: var(--primary);
    text-transform: uppercase;
    margin-bottom: 0.8rem;
    font-family:
        -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
        Arial, sans-serif;
}
.about-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 2.5rem;
}

/* ===== 联系 ===== */
.contact-grid {
    display: grid;
    gap: 3rem;
}
@media (min-width: 1024px) {
    .contact-grid {
        grid-template-columns: 1fr 2fr;
        gap: 4rem;
    }
}
.contact-info-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.2rem 0;
    border-bottom: 1px solid var(--border-light);
}
.contact-info-item:last-child {
    border-bottom: none;
}
.contact-info-item .icon-box {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: rgba(255, 141, 40, 0.04);
    border: 1px solid rgba(255, 141, 40, 0.06);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 1rem;
    flex-shrink: 0;
}
.contact-info-item .info-label {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted-light);
    font-family:
        -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
        Arial, sans-serif;
}
.contact-info-item .info-value {
    color: #ffffff;
    font-weight: 400;
    font-size: 0.95rem;
    font-family:
        -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
        Arial, sans-serif;
}

.contact-form {
    background: var(--bg-dark-card);
    padding: 2.5rem;
    border-radius: 24px;
    border: 1px solid var(--border-light);
}
.contact-form .form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.2rem;
}
.contact-form label {
    display: block;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted-light);
    margin-bottom: 0.4rem;
    font-family:
        -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
        Arial, sans-serif;
}
.contact-form > div {
    margin-top: 1.2rem;
}
.contact-form > div:first-of-type {
    margin-top: 0;
}
.contact-form .form-row > div {
    margin-top: 0;
}

.input-dark {
    width: 100%;
    padding: 1rem 1.4rem;
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-light);
    color: #ffffff;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    outline: none;
    font-family:
        -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
        Arial, sans-serif;
}
.input-dark:focus {
    border-color: var(--primary);
    background: rgba(255, 255, 255, 0.06);
    box-shadow: 0 0 0 4px rgba(255, 141, 40, 0.04);
}
.input-dark::placeholder {
    color: var(--text-muted-light);
}
textarea.input-dark {
    resize: vertical;
    min-height: 120px;
}

.btn-submit {
    width: 100%;
    justify-content: center;
    margin-top: 1.8rem;
    padding: 1rem;
}
.form-note {
    text-align: center;
    color: var(--text-muted-light);
    font-size: 0.7rem;
    margin-top: 1rem;
    letter-spacing: 0.04em;
    font-family:
        -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
        Arial, sans-serif;
}

/* ===== 页脚 ===== */
.footer {
    text-align: center;
    padding: 3rem 2rem;
    border-top: 1px solid rgba(0, 0, 0, 0.04);
    color: var(--text-muted-dark);
    font-size: 0.8rem;
    letter-spacing: 0.04em;
    font-family:
        -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
        Arial, sans-serif;
}
.footer .logo-text {
    font-weight: 600;
    color: var(--text-dark);
}
.footer-sep {
    display: inline-block;
    margin: 0 0.8rem;
    opacity: 0.2;
}

/* ===== 淡入动画 ===== */
.fade-in {
    opacity: 0;
    transform: translateY(36px);
    transition: all 1s cubic-bezier(0.23, 1, 0.32, 1);
}
.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===== 响应式 ===== */
@media (max-width: 640px) {
    .splash-logo-img {
        width: 80px;
        height: 80px;
    }
    .splash-logo-text {
        font-size: 1.8rem;
        margin-top: 0.6rem;
    }
    .hero-title {
        font-size: 2.8rem;
    }
    .section-title {
        font-size: 2.4rem;
    }
    .header-logo-text {
        font-size: 1rem;
    }
    .contact-form {
        padding: 1.5rem;
    }
    .contact-form .form-row {
        grid-template-columns: 1fr;
        gap: 1.2rem;
    }
    .container {
        padding: 0 1.2rem;
    }
    .hero-trust {
        flex-wrap: wrap;
        gap: 1rem;
    }
    .splash-hint {
        font-size: 0.6rem;
        margin-top: 1.2rem;
    }
    .bg-dots .dot {
        width: 3px;
        height: 3px;
    }
}