/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Noto Sans SC', 'Inter', sans-serif;
  background: #0a0a0a; color: #e2e8f0; line-height: 1.8; overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }

:root {
  --blue: #b8860b; --blue-light: #d4a843; --blue-glow: rgba(184,134,11,0.4);
  --cyan: #e6c35c; --purple: #8b7355; --emerald: #10b981; --red: #ef4444;
  --dark: #0a0a0a; --dark-2: #111111; --dark-3: #1a1a1a;
  --card-bg: rgba(255,255,255,0.03); --border: rgba(212,168,67,0.12);
  --text-muted: #9ca3af; --radius: 16px; --radius-sm: 10px;
  --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
}

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 28px; border-radius: 50px; font-weight: 600;
  font-size: 0.95rem; cursor: pointer; border: none; transition: var(--transition); white-space: nowrap;
}
.btn--primary { background: linear-gradient(135deg, var(--blue), var(--blue-light)); color: #fff; box-shadow: 0 0 30px var(--blue-glow); }
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 0 50px var(--blue-glow); }
.btn--ghost { background: transparent; border: 1.5px solid rgba(255,255,255,0.2); color: #fff; }
.btn--ghost:hover { border-color: var(--blue-light); color: var(--blue-light); }
.btn--full { width: 100%; justify-content: center; }
.btn--lg { padding: 16px 32px; font-size: 1rem; }
.btn__icon { transition: transform var(--transition); }
.btn:hover .btn__icon { transform: translateX(4px); }

/* ===== NAV ===== */
.nav { position: fixed; top: 0; left: 0; right: 0; z-index: 100; background: rgba(10,10,10,0.85); backdrop-filter: blur(20px); border-bottom: 1px solid var(--border); transition: var(--transition); }
.nav--scrolled { background: rgba(10,10,10,0.98); }
.nav__inner { max-width: 1200px; margin: 0 auto; padding: 0 24px; height: 68px; display: flex; align-items: center; justify-content: space-between; }
.nav__logo { display: flex; align-items: center; gap: 8px; }
.nav__logo-icon { color: var(--cyan); font-size: 1.4rem; }
.nav__logo-text { font-family: 'Outfit', sans-serif; font-size: 1.25rem; letter-spacing: -0.5px; color: #fff; }
.nav__logo-text strong { color: var(--cyan); }
.nav__links { display: flex; align-items: center; gap: 32px; }
.nav__links a { font-size: 0.9rem; color: var(--text-muted); transition: color var(--transition); }
.nav__links a:hover { color: #fff; }
.nav__cta { background: var(--blue) !important; color: #fff !important; padding: 9px 22px; border-radius: 50px; font-weight: 600; }
.nav__cta:hover { background: var(--blue-light) !important; }
.nav__burger { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 6px; }
.nav__burger span { display: block; width: 24px; height: 2px; background: #fff; border-radius: 2px; transition: var(--transition); }
.nav__mobile { display: none; flex-direction: column; background: var(--dark-2); border-top: 1px solid var(--border); }
.nav__mobile a { padding: 16px 24px; font-size: 1rem; border-bottom: 1px solid var(--border); color: var(--text-muted); }
.nav__mobile a:hover { color: #fff; background: var(--card-bg); }
.nav__mobile.open { display: flex; }

/* ===== HERO ===== */
.hero { min-height: 100vh; display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: 48px; padding: 100px 24px 60px; max-width: 1200px; margin: 0 auto; position: relative; }
.hero__bg { position: fixed; inset: 0; z-index: -1; pointer-events: none; }
.hero__orb { position: absolute; border-radius: 50%; filter: blur(80px); opacity: 0.25; }
.hero__orb--1 { width: 600px; height: 600px; background: #b8860b; top: -200px; left: -200px; animation: float1 8s ease-in-out infinite; }
.hero__orb--2 { width: 400px; height: 400px; background: #8b7355; top: 30%; right: -100px; animation: float2 10s ease-in-out infinite; }
.hero__orb--3 { width: 300px; height: 300px; background: #e6c35c; bottom: 0; left: 40%; animation: float3 7s ease-in-out infinite; }
.hero__grid { position: absolute; inset: 0; background-image: linear-gradient(rgba(184,134,11,0.06) 1px, transparent 1px), linear-gradient(90deg, rgba(184,134,11,0.06) 1px, transparent 1px); background-size: 60px 60px; mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black, transparent); }
@keyframes float1 { 0%,100%{transform:translate(0,0)} 50%{transform:translate(30px,40px)} }
@keyframes float2 { 0%,100%{transform:translate(0,0)} 50%{transform:translate(-40px,30px)} }
@keyframes float3 { 0%,100%{transform:translate(0,0)} 50%{transform:translate(20px,-30px)} }

.hero__badge { display: inline-flex; align-items: center; gap: 8px; background: rgba(184,134,11,0.15); border: 1px solid rgba(184,134,11,0.3); padding: 8px 16px; border-radius: 50px; font-size: 0.8rem; color: var(--blue-light); margin-bottom: 24px; font-weight: 500; }
.hero__badge-dot { width: 7px; height: 7px; background: var(--cyan); border-radius: 50%; animation: pulse 2s infinite; }
@keyframes pulse { 0%,100%{opacity:1;transform:scale(1)} 50%{opacity:0.5;transform:scale(0.8)} }
.hero__title { font-family: 'Noto Sans SC', 'Outfit', sans-serif; font-size: clamp(2.2rem, 5vw, 3.6rem); font-weight: 900; line-height: 1.2; color: #fff; margin-bottom: 20px; letter-spacing: -1px; }
.hero__title-gradient { background: linear-gradient(135deg, var(--blue-light), var(--cyan)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero__sub { font-size: 1.05rem; color: var(--text-muted); margin-bottom: 32px; max-width: 480px; }
.hero__actions { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 48px; }
.hero__stats { display: flex; align-items: center; gap: 24px; flex-wrap: wrap; padding: 20px 24px; background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius); backdrop-filter: blur(10px); }
.hero__stat { text-align: center; }
.hero__stat-value { display: block; font-family: 'Outfit', sans-serif; font-size: 1.5rem; font-weight: 700; color: var(--blue-light); }
.hero__stat-label { display: block; font-size: 0.72rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.5px; }
.hero__stat-divider { width: 1px; height: 36px; background: var(--border); }
.hero__visual { position: relative; display: flex; align-items: center; justify-content: center; }
.hero__screen-wrap { position: relative; width: 100%; }
.hero__screen-glow { position: absolute; inset: -30px; background: radial-gradient(ellipse, var(--blue-glow), transparent 70%); border-radius: 50%; z-index: 0; }
.hero__screen { position: relative; z-index: 1; border-radius: 20px; overflow: hidden; border: 1px solid rgba(184,134,11,0.3); box-shadow: 0 0 60px rgba(184,134,11,0.25), 0 30px 60px rgba(0,0,0,0.5); aspect-ratio: 4/3; background: linear-gradient(135deg, #0f0f0f 0%, #1a1a1a 50%, #0a0a0a 100%); }
.hero__screen--fallback::after { content: '网站重新设计服务'; display: flex; align-items: center; justify-content: center; height: 100%; font-size: 1.1rem; color: var(--blue-light); font-weight: 600; text-align: center; padding: 20px; }
.hero__img { width: 100%; height: 100%; object-fit: cover; }
.hero__screen-overlay { position: absolute; inset: 0; background: linear-gradient(to top, rgba(10,10,10,0.4) 0%, transparent 50%); }
.hero__screen-tag { position: absolute; bottom: 16px; left: 50%; transform: translateX(-50%); background: rgba(10,10,10,0.85); border: 1px solid var(--border); backdrop-filter: blur(10px); padding: 6px 16px; border-radius: 50px; font-size: 0.75rem; color: var(--cyan); white-space: nowrap; z-index: 2; }
.hero__scroll { position: absolute; bottom: 24px; left: 50%; transform: translateX(-50%); display: flex; flex-direction: column; align-items: center; gap: 10px; font-size: 0.72rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 1px; }
.hero__scroll-line { width: 1px; height: 48px; background: linear-gradient(to bottom, var(--blue-light), transparent); animation: scrollLine 2s ease-in-out infinite; }
@keyframes scrollLine { 0%{opacity:1;transform:scaleY(1)} 100%{opacity:0;transform:scaleY(0)} }

/* ===== BAND ===== */
.band { background: linear-gradient(135deg, rgba(184,134,11,0.1), rgba(139,115,85,0.1)); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); padding: 18px 24px; }
.band__inner { max-width: 1200px; margin: 0 auto; display: flex; align-items: center; justify-content: center; gap: 20px; flex-wrap: wrap; }
.band__item { display: flex; align-items: center; gap: 8px; font-size: 0.85rem; font-weight: 500; color: #cbd5e1; }
.band__icon { color: var(--blue-light); }
.band__sep { color: var(--border); }

/* ===== SECTION COMMONS ===== */
.section-header { text-align: center; margin-bottom: 56px; }
.section-badge { display: inline-block; padding: 6px 18px; border-radius: 50px; font-size: 0.78rem; font-weight: 600; text-transform: uppercase; letter-spacing: 1px; background: rgba(184,134,11,0.15); color: var(--blue-light); border: 1px solid rgba(184,134,11,0.25); margin-bottom: 16px; }
.section-badge--dark { background: rgba(255,255,255,0.08); color: #fff; border-color: var(--border); }
.section-badge--glow { background: rgba(184,134,11,0.2); color: var(--cyan); border-color: rgba(230,195,92,0.3); }
.section-title { font-family: 'Noto Sans SC', 'Outfit', sans-serif; font-size: clamp(1.8rem, 3.5vw, 2.8rem); font-weight: 900; line-height: 1.25; color: #fff; margin-bottom: 16px; letter-spacing: -0.5px; }
.section-title--light { color: #fff; }
.section-sub { font-size: 1rem; color: var(--text-muted); max-width: 520px; margin: 0 auto; }

/* ===== CASE STUDY / COMPARISON ===== */
.case-study { padding: 100px 0; }
.comparison { display: grid; grid-template-columns: 1fr auto 1fr; gap: 32px; align-items: center; margin-bottom: 64px; }
.comparison__card { background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; transition: var(--transition); }
.comparison__card:hover { transform: translateY(-4px); }
.comparison__card--before:hover { border-color: rgba(239,68,68,0.3); }
.comparison__card--after:hover { border-color: rgba(16,185,129,0.3); }
.comparison__label { display: flex; align-items: center; gap: 8px; padding: 16px 24px; font-weight: 700; font-size: 0.9rem; border-bottom: 1px solid var(--border); }
.comparison__label--before { color: var(--red); }
.comparison__label--after { color: var(--emerald); }
.comparison__dot { width: 8px; height: 8px; border-radius: 50%; }
.comparison__dot--red { background: var(--red); box-shadow: 0 0 8px var(--red); }
.comparison__dot--green { background: var(--emerald); box-shadow: 0 0 8px var(--emerald); animation: pulse 2s infinite; }
.comparison__img-wrap { padding: 16px; }
.comparison__img { width: 100%; border-radius: var(--radius-sm); border: 1px solid var(--border); }
.comparison__issues { padding: 20px 24px; border-top: 1px solid var(--border); }
.comparison__issues-title { font-family: 'Noto Sans SC', sans-serif; font-size: 0.95rem; font-weight: 700; margin-bottom: 12px; color: #fff; }
.comparison__issues ul { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.comparison__issues li { font-size: 0.88rem; color: var(--text-muted); padding-left: 8px; }
.comparison__card--before .comparison__issues li::before { content: '✗ '; color: var(--red); font-weight: 700; }
.comparison__card--after .comparison__issues li::before { content: '✓ '; color: var(--emerald); font-weight: 700; }
.comparison__arrow { display: flex; flex-direction: column; align-items: center; gap: 8px; }
.comparison__arrow-circle { width: 56px; height: 56px; border-radius: 50%; background: linear-gradient(135deg, var(--blue), var(--cyan)); display: flex; align-items: center; justify-content: center; font-size: 1.5rem; color: #fff; font-weight: 700; box-shadow: 0 0 30px var(--blue-glow); animation: arrowPulse 2s ease-in-out infinite; }
@keyframes arrowPulse { 0%,100%{box-shadow: 0 0 20px var(--blue-glow)} 50%{box-shadow: 0 0 40px var(--blue-glow)} }
.comparison__arrow span { font-size: 0.75rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 1px; }

/* ===== RESULTS ===== */
.results { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.results__card { background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius); padding: 28px; text-align: center; transition: var(--transition); }
.results__card:hover { border-color: rgba(184,134,11,0.4); transform: translateY(-4px); }
.results__icon { font-size: 2rem; margin-bottom: 12px; }
.results__value { font-family: 'Outfit', sans-serif; font-size: 2.2rem; font-weight: 800; color: var(--blue-light); line-height: 1; margin-bottom: 8px; }
.results__label { font-size: 0.82rem; color: var(--text-muted); }

/* ===== PROCESS ===== */
.process { padding: 100px 0; background: linear-gradient(180deg, transparent 0%, var(--dark-2) 20%, var(--dark-2) 80%, transparent 100%); }
.process__grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.process__step { background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius); padding: 32px; transition: var(--transition); position: relative; overflow: hidden; }
.process__step::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: linear-gradient(90deg, var(--blue), var(--cyan)); opacity: 0; transition: var(--transition); }
.process__step:hover { border-color: rgba(184,134,11,0.4); transform: translateY(-4px); }
.process__step:hover::before { opacity: 1; }
.process__num { font-family: 'Outfit', sans-serif; font-size: 2.5rem; font-weight: 800; color: rgba(184,134,11,0.2); line-height: 1; margin-bottom: 16px; }
.process__title { font-family: 'Noto Sans SC', sans-serif; font-size: 1.15rem; font-weight: 700; color: #fff; margin-bottom: 12px; }
.process__text { font-size: 0.9rem; color: var(--text-muted); line-height: 1.7; }

/* ===== SERVICES ===== */
.services { padding: 100px 0; }
.services__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.service-card { background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius); padding: 28px; transition: var(--transition); animation: fadeUp 0.6s ease both; animation-delay: var(--delay); }
@keyframes fadeUp { from{opacity:0;transform:translateY(20px)} to{opacity:1;transform:translateY(0)} }
.service-card:hover { border-color: rgba(184,134,11,0.4); transform: translateY(-4px); background: rgba(184,134,11,0.08); }
.service-card__icon { font-size: 2rem; margin-bottom: 16px; }
.service-card__title { font-family: 'Noto Sans SC', sans-serif; font-size: 1.05rem; font-weight: 700; color: #fff; margin-bottom: 10px; }
.service-card__text { font-size: 0.88rem; color: var(--text-muted); line-height: 1.7; }

/* ===== WHY ===== */
.why { padding: 100px 0; background: linear-gradient(135deg, rgba(184,134,11,0.06) 0%, rgba(139,115,85,0.06) 100%); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.why__inner { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.why__text { color: var(--text-muted); font-size: 1rem; line-height: 1.8; margin-bottom: 28px; }
.why__list { display: flex; flex-direction: column; gap: 14px; list-style: none; }
.why__list li { display: flex; align-items: center; gap: 12px; font-size: 0.95rem; color: #cbd5e1; }
.why__check { color: var(--cyan); font-weight: 700; font-size: 1rem; }
.why__cards { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.why__card { background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius); padding: 28px; text-align: center; transition: var(--transition); }
.why__card:hover { border-color: rgba(184,134,11,0.4); transform: translateY(-3px); }
.why__card-num { font-family: 'Outfit', sans-serif; font-size: 2.2rem; font-weight: 800; color: var(--blue-light); line-height: 1; margin-bottom: 8px; }
.why__card-label { font-size: 0.82rem; color: var(--text-muted); font-weight: 500; }

/* ===== CONTACT ===== */
.contact { padding: 100px 0; }
.contact__inner { display: grid; grid-template-columns: 1fr 1.2fr; gap: 64px; align-items: start; }
.contact__sub { color: var(--text-muted); font-size: 1rem; line-height: 1.8; margin-bottom: 40px; }
.contact__details { display: flex; flex-direction: column; gap: 20px; }
.contact__item { display: flex; align-items: center; gap: 16px; background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 16px 20px; transition: var(--transition); }
a.contact__item:hover { border-color: rgba(184,134,11,0.4); transform: translateX(4px); }
.contact__item-icon { font-size: 1.5rem; }
.contact__item-label { font-size: 0.75rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.5px; }
.contact__item-value { font-size: 0.95rem; color: #fff; font-weight: 600; }
.contact__form { background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius); padding: 36px; display: flex; flex-direction: column; gap: 18px; }
.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form__group { display: flex; flex-direction: column; gap: 8px; }
.form__group label { font-size: 0.82rem; font-weight: 600; color: #cbd5e1; text-transform: uppercase; letter-spacing: 0.5px; }
.form__group input, .form__group textarea { background: rgba(255,255,255,0.05); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 13px 16px; color: #fff; font-size: 0.95rem; font-family: inherit; transition: var(--transition); outline: none; resize: vertical; }
.form__group input:focus, .form__group textarea:focus { border-color: var(--blue-light); background: rgba(184,134,11,0.08); box-shadow: 0 0 0 3px rgba(184,134,11,0.15); }
.form__group input::placeholder, .form__group textarea::placeholder { color: #4b5563; }
.form__note { text-align: center; font-size: 0.8rem; color: var(--text-muted); }
.form__success { background: rgba(230,195,92,0.1); border: 1px solid rgba(230,195,92,0.3); border-radius: var(--radius-sm); padding: 16px; text-align: center; color: var(--cyan); font-weight: 600; }

/* ===== FOOTER ===== */
.footer { background: var(--dark-2); border-top: 1px solid var(--border); padding: 48px 0 24px; }
.footer__inner { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 24px; margin-bottom: 32px; }
.footer__tagline { font-size: 0.85rem; color: var(--text-muted); margin-top: 8px; max-width: 360px; }
.footer__links { display: flex; gap: 28px; flex-wrap: wrap; }
.footer__links a { font-size: 0.88rem; color: var(--text-muted); transition: color var(--transition); }
.footer__links a:hover { color: var(--blue-light); }
.footer__bottom { border-top: 1px solid var(--border); padding-top: 24px; text-align: center; }
.footer__bottom p { font-size: 0.82rem; color: #4b5563; }

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .hero { grid-template-columns: 1fr; text-align: center; padding-top: 120px; }
  .hero__sub, .hero__stats { margin-left: auto; margin-right: auto; }
  .hero__actions { justify-content: center; }
  .hero__visual { max-width: 560px; margin: 0 auto; }
  .hero__scroll { display: none; }
  .comparison { grid-template-columns: 1fr; }
  .comparison__arrow { flex-direction: row; }
  .comparison__arrow-circle { transform: rotate(90deg); }
  .process__grid { grid-template-columns: 1fr 1fr; }
  .results { grid-template-columns: 1fr 1fr; }
  .why__inner { grid-template-columns: 1fr; }
  .contact__inner { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .nav__links { display: none; }
  .nav__burger { display: flex; }
  .services__grid { grid-template-columns: 1fr 1fr; }
  .why__cards { grid-template-columns: 1fr 1fr; }
  .form__row { grid-template-columns: 1fr; }
  .hero__stats { gap: 16px; }
  .hero__stat-divider { display: none; }
  .band__sep { display: none; }
  .footer__inner { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 480px) {
  .services__grid { grid-template-columns: 1fr; }
  .process__grid { grid-template-columns: 1fr; }
  .results { grid-template-columns: 1fr 1fr; }
  .hero__actions { flex-direction: column; align-items: stretch; }
  .hero__actions .btn { text-align: center; justify-content: center; }
  .contact__form { padding: 24px; }
}