/* =========================================================
   素年婚礼 SUNIAN STUDIO — PC 端样式
   黑白现代主义：无圆角 / 1px 细线 / 灰度影像 / 大字排版
   ========================================================= */

/* ---------- 变量 ---------- */
:root{
  --black:#0A0A0A;
  --paper:#FFFFFF;
  --grey:#8C8C8C;
  --hair:rgba(0,0,0,.12);
  --ink:rgba(10,10,10,.68);
  --error:#B3261E;
  --font-sans:-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-serif:Georgia,"Times New Roman","Songti SC",SimSun,serif;
  --container:1400px;
  --header-h:76px;
  --gutter:48px;
  --sp-1:8px;
  --sp-2:16px;
  --sp-3:24px;
  --sp-4:32px;
  --sp-5:48px;
  --sp-6:64px;
  --sp-7:96px;
  --sp-8:128px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- Reset / 基础 ---------- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-sans);
  background:var(--paper);
  color:var(--black);
  font-size:16px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font-family:inherit;font-size:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{list-style:none}
table{border-collapse:collapse}
sup{font-size:.5em}
::selection{background:var(--black);color:var(--paper)}
:focus-visible{outline:2px solid var(--black);outline-offset:3px}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--black);color:var(--paper);padding:12px 24px;z-index:999}
.skip-link:focus{left:0}

/* ---------- 通用布局 ---------- */
.container{width:100%;max-width:var(--container);margin:0 auto;padding-left:var(--gutter);padding-right:var(--gutter)}
.section{padding:110px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:var(--sp-5);margin-bottom:56px}
.section-no{display:block;font-size:12px;letter-spacing:.3em;color:var(--grey);font-weight:700;margin-bottom:16px}
.section-title{font-size:clamp(34px,3.4vw,48px);font-weight:900;line-height:1.16;letter-spacing:.02em}
.section-en{font-size:11px;letter-spacing:.34em;color:var(--grey);font-weight:600;white-space:nowrap;padding-bottom:12px}

.link-arrow{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:14px;letter-spacing:.14em;padding-bottom:6px;border-bottom:1px solid var(--black);transition:opacity .3s var(--ease)}
.link-arrow i{transition:transform .3s var(--ease);font-size:12px}
.link-arrow:hover{opacity:.62}
.link-arrow:hover i{transform:translateX(6px)}
.link-arrow:active{opacity:.4}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:12px;background:var(--black);color:var(--paper);border:1px solid var(--black);padding:18px 42px;font-size:15px;font-weight:800;letter-spacing:.18em;transition:background .3s var(--ease),color .3s var(--ease)}
.btn:hover{background:var(--paper);color:var(--black)}
.btn:active{transform:translateY(1px)}
.btn-ghost{background:transparent;color:var(--black)}
.btn-ghost:hover{background:var(--black);color:var(--paper)}

/* 滚动渐显 */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.is-visible{opacity:1;transform:none}
.reveal-d1{transition-delay:.08s}
.reveal-d2{transition-delay:.16s}
.reveal-d3{transition-delay:.24s}

/* ---------- 吸顶导航 ---------- */
.site-header{position:sticky;top:0;z-index:100;background:var(--paper);border-bottom:1px solid var(--hair);transition:box-shadow .3s var(--ease)}
.site-header.is-scrolled{box-shadow:0 6px 24px rgba(0,0,0,.07)}
.header-inner{max-width:var(--container);margin:0 auto;padding:0 var(--gutter);height:var(--header-h);display:flex;align-items:center;gap:var(--sp-5)}
.brand{display:flex;align-items:baseline;gap:12px;font-weight:900;font-size:21px;letter-spacing:.06em;white-space:nowrap}
.brand-en{font-size:12px;font-weight:700;letter-spacing:.3em}
.brand:hover .brand-en{color:var(--grey)}
.main-nav{display:flex;gap:38px;margin:0 auto}
.nav-link{display:flex;flex-direction:column;align-items:center;gap:2px;padding:6px 2px;position:relative}
.nav-link .en{font-size:10px;letter-spacing:.26em;color:var(--grey);font-weight:700;transition:color .3s}
.nav-link .zh{font-size:13px;font-weight:800;letter-spacing:.14em}
.nav-link::after{content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;background:var(--black);transform:scaleX(0);transform-origin:left;transition:transform .3s var(--ease)}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1)}
.nav-link:hover .en,.nav-link.is-active .en{color:var(--black)}
.header-cta{background:var(--black);color:var(--paper);border:1px solid var(--black);padding:13px 30px;font-size:14px;font-weight:800;letter-spacing:.22em;white-space:nowrap;transition:background .3s var(--ease),color .3s var(--ease)}
.header-cta:hover{background:var(--paper);color:var(--black)}
.header-cta:active{transform:translateY(1px)}

/* ---------- 首页 Hero ---------- */
.hero{display:flex;flex-direction:column;min-height:calc(100vh - var(--header-h))}
.hero-main{flex:1;display:grid;grid-template-columns:1fr 38%;gap:var(--sp-6);align-items:stretch;width:100%;max-width:var(--container);margin:0 auto;padding:0 var(--gutter)}
.hero-copy{padding:72px 0 64px;display:flex;flex-direction:column;justify-content:center}
.hero-kicker{display:flex;align-items:center;gap:16px;font-size:12px;letter-spacing:.32em;color:var(--grey);font-weight:700;margin-bottom:36px}
.hero-kicker::before{content:"";width:40px;height:1px;background:var(--black);flex:none}
.hero-title{font-size:clamp(64px,6.6vw,96px);line-height:1.08;font-weight:900;letter-spacing:.01em}
.hero-sub{margin-top:36px;max-width:520px;color:var(--ink);font-size:16px}
.hero-actions{margin-top:44px;display:flex;align-items:center;gap:28px;flex-wrap:wrap}
.hero-media{position:relative;min-height:560px;background:#D8D8D8;overflow:hidden}
.hero-media img{width:100%;height:100%;object-fit:cover;filter:grayscale(1) contrast(1.05)}

/* 跑马灯 */
.marquee{background:var(--black);color:var(--paper);overflow:hidden;padding:18px 0}
.marquee-track{display:flex;align-items:center;gap:44px;width:max-content;white-space:nowrap;animation:marquee 36s linear infinite;will-change:transform}
.marquee-track span{font-size:15px;font-weight:800;letter-spacing:.3em}
.marquee-track span.mq-en{font-size:12px;letter-spacing:.36em;opacity:.72}
.marquee-track i{font-style:normal;font-size:12px;opacity:.4}
@keyframes marquee{from{transform:translateX(0)}to{transform:translateX(-50%)}}
.marquee:hover .marquee-track{animation-play-state:paused}

/* ---------- 服务表格化行列表（首页） ---------- */
.service-list{border-top:1px solid var(--hair)}
.service-row{position:relative;display:grid;grid-template-columns:72px 1fr auto;align-items:center;gap:var(--sp-4);padding:34px 28px;margin:0 -28px;border-bottom:1px solid var(--hair);transition:background .35s var(--ease),color .35s var(--ease)}
.sr-index{font-family:var(--font-serif);font-size:16px;color:var(--grey);transition:color .35s var(--ease)}
.sr-name{font-size:26px;font-weight:900;letter-spacing:.04em}
.sr-desc{margin-top:6px;font-size:14px;color:var(--grey);max-width:640px;transition:color .35s var(--ease)}
.sr-price{font-size:24px;font-weight:900;text-align:right;white-space:nowrap}
.sr-price em{font-style:normal;font-size:12px;font-weight:600;color:var(--grey);margin-left:4px;transition:color .35s var(--ease)}
.sr-thumb{position:absolute;right:300px;top:50%;width:192px;height:120px;overflow:hidden;background:#D8D8D8;box-shadow:0 24px 48px rgba(0,0,0,.3);opacity:0;transform:translateY(-50%) rotate(-4deg) scale(.92);transition:opacity .35s var(--ease),transform .35s var(--ease);pointer-events:none;z-index:3}
.sr-thumb img{width:100%;height:100%;object-fit:cover;filter:grayscale(1) contrast(1.05)}
.service-row:hover,.service-row:focus-visible{background:var(--black);color:var(--paper)}
.service-row:hover .sr-desc,.service-row:hover .sr-index,
.service-row:hover .sr-price em{color:rgba(255,255,255,.62)}
.service-row:hover .sr-thumb,.service-row:focus-visible .sr-thumb{opacity:1;transform:translateY(-50%) rotate(-3deg) scale(1)}
.service-row:active{background:var(--black)}

/* ---------- 案例网格 ---------- */
.case-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;align-items:start}
.case-item{position:relative;display:block;overflow:hidden;background:#E0E0E0}
.case-item.span-2{grid-column:span 2}
.case-item figure{aspect-ratio:2/3;overflow:hidden}
.case-item.span-2 figure{aspect-ratio:4/3}
.case-item img{width:100%;height:100%;object-fit:cover;filter:grayscale(1) contrast(1.05);transition:filter .5s var(--ease),transform .7s var(--ease)}
.case-item:hover img,.case-item:focus-visible img{filter:grayscale(0) contrast(1);transform:scale(1.045)}
.case-tag{position:absolute;left:0;bottom:0;display:flex;align-items:center;gap:10px;background:var(--paper);color:var(--black);padding:10px 16px;font-size:12px;font-weight:800;letter-spacing:.06em}
.case-tag span{font-size:11px;letter-spacing:.2em;color:var(--grey)}
.cases-more{margin-top:48px;text-align:center}

/* ---------- 工作室宣言（黑底反白） ---------- */
.manifesto{background:var(--black);color:var(--paper);padding:120px 0}
.manifesto .section-no{color:rgba(255,255,255,.42)}
.manifesto-text{max-width:980px;font-size:clamp(28px,2.6vw,36px);font-weight:800;line-height:1.62;letter-spacing:.03em}
.manifesto-text em{font-style:normal;border-bottom:2px solid var(--paper);padding-bottom:2px}
.manifesto-sign{margin-top:44px;display:flex;align-items:center;gap:16px;font-size:12px;letter-spacing:.3em;color:rgba(255,255,255,.56);font-weight:700}
.manifesto-sign::before{content:"";width:40px;height:1px;background:rgba(255,255,255,.5)}

/* ---------- 数据 ---------- */
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.stat{padding:8px 36px;border-left:1px solid var(--hair)}
.stat:first-child{border-left:0;padding-left:0}
.stat-num{display:flex;align-items:baseline;font-size:clamp(56px,6vw,88px);font-weight:900;line-height:1;letter-spacing:-.01em}
.stat-num .suffix{font-size:.38em;font-weight:800;margin-left:8px;letter-spacing:.04em}
.stat-label{margin-top:16px;font-size:13px;letter-spacing:.2em;color:var(--grey);font-weight:600}

/* ---------- 评价轮播 ---------- */
.tst-viewport{overflow:hidden}
.tst-track{display:flex;transition:transform .6s var(--ease)}
.tst-slide{min-width:100%}
.tst-card{display:grid;grid-template-columns:64px 1fr;gap:var(--sp-4);border:1px solid var(--black);padding:56px}
.tst-mark{font-family:var(--font-serif);font-size:76px;line-height:.65;color:var(--black)}
.tst-text{font-size:clamp(19px,1.8vw,25px);font-weight:800;line-height:1.72;letter-spacing:.02em}
.tst-meta{margin-top:26px;display:flex;align-items:center;gap:14px;font-size:13px;letter-spacing:.08em;color:var(--grey);flex-wrap:wrap}
.tst-meta b{font-size:15px;color:var(--black);letter-spacing:.12em}
.tst-meta i{font-style:normal;width:1px;height:12px;background:var(--hair)}
.tst-nav{display:flex;align-items:center;gap:22px;margin-top:32px}
.tst-btn{width:52px;height:52px;border:1px solid var(--black);display:grid;place-items:center;font-size:15px;transition:background .3s var(--ease),color .3s var(--ease)}
.tst-btn:hover{background:var(--black);color:var(--paper)}
.tst-btn:active{transform:translateY(1px)}
.tst-progress{flex:1;height:1px;background:var(--hair);position:relative}
.tst-progress span{position:absolute;left:0;top:-.5px;height:2px;width:25%;background:var(--black);transition:width .4s var(--ease)}
.tst-count{font-size:12px;letter-spacing:.24em;color:var(--grey);font-weight:700;white-space:nowrap}

/* ---------- CTA 黑底大按钮 ---------- */
.cta-band{background:var(--black);color:var(--paper);padding:110px 0}
.cta-band .section-no{color:rgba(255,255,255,.42)}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:var(--sp-6);flex-wrap:wrap}
.cta-title{font-size:clamp(36px,3.8vw,56px);font-weight:900;line-height:1.2;letter-spacing:.03em}
.cta-side{display:flex;flex-direction:column;align-items:flex-start;gap:20px}
.btn-xl{border:1px solid rgba(255,255,255,.9);background:transparent;color:var(--paper);padding:26px 58px;font-size:17px;letter-spacing:.26em;font-weight:800;transition:background .3s var(--ease),color .3s var(--ease)}
.btn-xl:hover{background:var(--paper);color:var(--black)}
.btn-xl:active{transform:translateY(1px)}
.cta-sub{font-size:13px;letter-spacing:.14em;color:rgba(255,255,255,.56)}

/* ---------- 内页页头 ---------- */
.page-hero{border-bottom:1px solid var(--hair);padding:88px 0 64px}
.page-kicker{display:flex;align-items:center;gap:16px;font-size:12px;letter-spacing:.34em;color:var(--grey);font-weight:700;margin-bottom:26px}
.page-kicker::before{content:"";width:40px;height:1px;background:var(--black)}
.page-hero h1{font-size:clamp(48px,5vw,76px);font-weight:900;line-height:1.12;letter-spacing:.02em}
.page-intro{margin-top:26px;max-width:660px;color:var(--ink)}

/* ---------- services.html 服务条目 ---------- */
.svc-item{display:grid;grid-template-columns:120px 1fr 300px;gap:var(--sp-5);padding:72px 0;border-top:1px solid var(--hair)}
.svc-item:last-of-type{border-bottom:1px solid var(--hair)}
.svc-no{font-family:var(--font-serif);font-size:44px;line-height:1;color:var(--grey)}
.svc-name{font-size:34px;font-weight:900;letter-spacing:.03em}
.svc-en{margin-top:12px;font-size:11px;letter-spacing:.3em;color:var(--grey);font-weight:700;text-transform:uppercase}
.svc-desc{margin-top:22px;max-width:620px;color:var(--ink)}
.svc-includes{margin-top:30px;display:grid;grid-template-columns:1fr 1fr;gap:2px 36px}
.svc-includes li{display:flex;align-items:center;gap:12px;font-size:14px;padding:11px 2px;border-bottom:1px solid var(--hair)}
.svc-includes li::before{content:"";width:5px;height:5px;background:var(--black);flex:none}
.svc-price{text-align:right}
.svc-price .amount{display:block;font-size:clamp(32px,3vw,44px);font-weight:900;letter-spacing:.01em}
.svc-price .unit{display:block;margin-top:8px;font-size:13px;letter-spacing:.14em;color:var(--grey);font-weight:600}
.svc-price .note{margin-top:18px;font-size:12px;line-height:1.9;color:var(--grey)}

/* 五步流程（表格化） */
.process-grid{display:grid;grid-template-columns:repeat(5,1fr);border-top:1px solid var(--hair);border-bottom:1px solid var(--hair)}
.p-step{padding:38px 28px 46px;border-left:1px solid var(--hair);transition:background .3s var(--ease),color .3s var(--ease)}
.p-step:first-child{border-left:0}
.p-step:hover{background:var(--black);color:var(--paper)}
.p-step .no{display:block;font-size:11px;letter-spacing:.28em;color:var(--grey);font-weight:700;transition:color .3s}
.p-step:hover .no{color:rgba(255,255,255,.6)}
.p-step h3{margin:16px 0 10px;font-size:19px;font-weight:900;letter-spacing:.06em}
.p-step p{font-size:13px;line-height:1.85;color:var(--ink);transition:color .3s}
.p-step:hover p{color:rgba(255,255,255,.72)}

/* FAQ 手风琴 */
.faq{max-width:900px}
.faq-item{border-bottom:1px solid var(--hair)}
.faq-item:first-child{border-top:1px solid var(--hair)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:var(--sp-3);padding:27px 4px;text-align:left;font-size:18px;font-weight:800;letter-spacing:.02em;transition:opacity .3s}
.faq-q:hover{opacity:.6}
.faq-q i{flex:none;font-size:14px;color:var(--grey);transition:transform .35s var(--ease)}
.faq-item.open .faq-q i{transform:rotate(45deg);color:var(--black)}
.faq-a{overflow:hidden;max-height:0;transition:max-height .4s var(--ease)}
.faq-a p{padding:0 4px 30px;max-width:740px;color:var(--ink)}

.mini-cta{border-top:1px solid var(--hair);padding:80px 0;display:flex;align-items:center;justify-content:space-between;gap:var(--sp-4);flex-wrap:wrap}
.mini-cta h2{font-size:30px;font-weight:900;letter-spacing:.03em}
.mini-cta .mini-sub{margin-top:10px;font-size:13px;color:var(--grey);letter-spacing:.1em}

/* ---------- cases.html ---------- */
.filter-bar{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:16px}
.filter-tag{padding:11px 24px;border:1px solid var(--hair);background:var(--paper);font-size:13px;font-weight:800;letter-spacing:.16em;transition:background .3s var(--ease),color .3s var(--ease),border-color .3s var(--ease)}
.filter-tag:hover{border-color:var(--black)}
.filter-tag.is-active{background:var(--black);color:var(--paper);border-color:var(--black)}
.filter-tag:active{transform:translateY(1px)}
.filter-result{font-size:12px;letter-spacing:.22em;color:var(--grey);margin-bottom:40px}
.filter-result b{color:var(--black)}
.case-item.is-hidden{display:none}

/* 弹层（案例详情 / 表单成功） */
.modal{position:fixed;inset:0;z-index:200;display:none;align-items:center;justify-content:center;padding:48px}
.modal.is-open{display:flex}
.modal-mask{position:absolute;inset:0;background:rgba(10,10,10,.86);animation:fadeIn .3s var(--ease)}
.modal-card{position:relative;background:var(--paper);width:min(880px,100%);max-height:88vh;overflow:auto;animation:rise .45s var(--ease)}
.modal-close{position:absolute;top:0;right:0;width:52px;height:52px;background:var(--black);color:var(--paper);display:grid;place-items:center;font-size:16px;z-index:2;transition:background .3s,color .3s}
.modal-close:hover{background:var(--paper);color:var(--black);outline:1px solid var(--black)}
@keyframes fadeIn{from{opacity:0}}
@keyframes rise{from{opacity:0;transform:translateY(30px)}}
.case-modal figure{aspect-ratio:4/3;background:#E0E0E0;overflow:hidden}
.case-modal img{width:100%;height:100%;object-fit:cover}
.case-modal-body{padding:40px 48px 48px}
.cm-title{font-size:32px;font-weight:900;letter-spacing:.03em}
.cm-sub{margin-top:8px;font-size:12px;letter-spacing:.26em;color:var(--grey);font-weight:700}
.case-info{margin-top:28px;width:100%}
.case-info th,.case-info td{border:1px solid var(--hair);padding:13px 18px;font-size:14px;text-align:left;vertical-align:top}
.case-info th{width:96px;font-weight:600;letter-spacing:.16em;color:var(--grey);background:#FAFAFA}
/* 表单成功弹层 */
.success-modal .modal-card{width:min(460px,100%);padding:56px 44px;text-align:center}
.success-modal .modal-close{background:transparent;color:var(--black);outline:none}
.success-modal .modal-close:hover{color:var(--grey)}
.fm-icon{font-size:52px;line-height:1;margin-bottom:24px}
.fm-title{font-size:26px;font-weight:900;letter-spacing:.06em}
.fm-text{margin-top:16px;font-size:14px;color:var(--ink);line-height:1.9}
.fm-text b{color:var(--black)}
.success-modal .btn{margin-top:32px;width:100%}

/* ---------- about.html ---------- */
.about-grid{display:grid;grid-template-columns:200px 1fr;gap:72px;padding:88px 0 40px}
.about-aside{position:relative}
.vertical-en{writing-mode:vertical-rl;height:440px;border-left:1px solid var(--hair);padding-left:22px;font-size:12px;letter-spacing:.62em;color:var(--grey);font-weight:700}
.about-lead{font-size:clamp(22px,2.2vw,30px);font-weight:800;line-height:1.72;letter-spacing:.02em}
.about-copy p+p{margin-top:26px;color:var(--ink)}
.about-figure{margin-top:56px;aspect-ratio:16/9;background:#E0E0E0;overflow:hidden}
.about-figure img{width:100%;height:100%;object-fit:cover;filter:grayscale(1) contrast(1.05)}

.team-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.team-card figure{aspect-ratio:3/4;background:#E0E0E0;overflow:hidden}
.team-card img{width:100%;height:100%;object-fit:cover;filter:grayscale(1) contrast(1.05);transition:filter .5s var(--ease),transform .7s var(--ease)}
.team-card:hover img{filter:grayscale(0) contrast(1);transform:scale(1.04)}
.team-index{display:block;margin-top:18px;font-family:var(--font-serif);font-size:13px;color:var(--grey)}
.team-card h3{margin-top:6px;font-size:21px;font-weight:900;letter-spacing:.08em}
.team-role{margin-top:6px;font-size:12px;letter-spacing:.22em;color:var(--grey);font-weight:700}
.team-years{margin-top:4px;font-size:12px;color:var(--grey)}
.team-bio{margin-top:10px;font-size:13px;color:var(--ink);line-height:1.8}

.timeline{border-top:1px solid var(--hair)}
.tl-row{display:grid;grid-template-columns:170px 1fr;gap:40px;padding:27px 0;border-bottom:1px solid var(--hair);transition:padding-left .3s var(--ease)}
.tl-row:hover{padding-left:12px}
.tl-year{font-family:var(--font-serif);font-size:24px;font-weight:700;letter-spacing:.04em}
.tl-event b{font-weight:900;letter-spacing:.04em}
.tl-event p{margin-top:4px;font-size:14px;color:var(--ink)}

.philo-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--sp-6)}
.philo-item{border-top:2px solid var(--black);padding-top:28px}
.philo-no{font-family:var(--font-serif);font-size:42px;line-height:1}
.philo-item h3{margin-top:20px;font-size:23px;font-weight:900;letter-spacing:.06em}
.philo-en{margin-top:8px;font-size:10px;letter-spacing:.3em;color:var(--grey);font-weight:700}
.philo-item p{margin-top:16px;font-size:14px;color:var(--ink);line-height:1.9}

/* ---------- contact.html ---------- */
.contact-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:96px;padding:88px 0 110px}
.contact-form{border-top:2px solid var(--black);padding-top:40px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 44px}
.field{position:relative;margin-bottom:38px}
.field-full{grid-column:1 / -1}
.field label{display:flex;justify-content:space-between;align-items:baseline;font-size:12px;letter-spacing:.26em;font-weight:800;color:var(--grey);margin-bottom:10px}
.field label .req{color:var(--black)}
.field input,.field select,.field textarea{width:100%;background:transparent;border:0;border-bottom:1px solid var(--black);border-radius:0;padding:12px 2px;font-family:inherit;font-size:17px;color:var(--black);transition:box-shadow .3s var(--ease)}
.field input::placeholder,.field textarea::placeholder{color:#B9B9B9}
.field textarea{resize:vertical;min-height:96px;line-height:1.8}
.field select{appearance:none;-webkit-appearance:none;cursor:pointer;padding-right:28px}
.field select option{color:var(--black)}
.select-field .fa-chevron-down{position:absolute;right:2px;bottom:16px;font-size:12px;color:var(--grey);pointer-events:none}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;box-shadow:0 1px 0 var(--black)}
.field.has-error input,.field.has-error select,.field.has-error textarea{border-bottom-color:var(--error)}
.field-error{display:none;margin-top:8px;font-size:12px;letter-spacing:.06em;color:var(--error)}
.field.has-error .field-error{display:block}
.btn-submit{width:100%;padding:20px;font-size:15px}
.form-note{margin-top:18px;font-size:12px;letter-spacing:.1em;color:var(--grey);text-align:center}

.info-list{border-top:1px solid var(--hair)}
.info-row{display:grid;grid-template-columns:120px 1fr;gap:var(--sp-3);align-items:baseline;padding:23px 0;border-bottom:1px solid var(--hair)}
.info-label .en{display:block;font-size:10px;letter-spacing:.32em;color:var(--grey);font-weight:700}
.info-label .zh{display:block;margin-top:2px;font-size:13px;font-weight:800;letter-spacing:.14em}
.info-value{font-size:16px;font-weight:600;letter-spacing:.03em;line-height:1.7}
.info-value a{border-bottom:1px solid var(--hair);transition:border-color .3s}
.info-value a:hover{border-bottom-color:var(--black)}
.info-value small{display:block;font-size:12px;color:var(--grey);font-weight:400;margin-top:2px}
.store-note{margin-top:36px;display:flex;gap:14px;font-size:13px;color:var(--ink);line-height:1.9}
.store-note::before{content:"";width:10px;height:10px;background:var(--black);flex:none;margin-top:7px}

/* 联系页黑底大字 */
.statement-band{background:var(--black);color:var(--paper);padding:100px 0}
.statement-band .section-no{color:rgba(255,255,255,.42)}
.statement-band h2{font-size:clamp(34px,4vw,58px);font-weight:900;letter-spacing:.04em;line-height:1.25}
.statement-band .band-sub{margin-top:24px;font-size:13px;letter-spacing:.16em;color:rgba(255,255,255,.56)}

/* ---------- Footer ---------- */
.site-footer{background:var(--black);color:var(--paper)}
.footer-top{display:grid;grid-template-columns:1.1fr 2fr;gap:var(--sp-6);padding:88px 0 64px}
.footer-wordmark{font-size:clamp(72px,9vw,132px);font-weight:900;line-height:.95;letter-spacing:.02em}
.footer-slogan{margin-top:22px;font-size:14px;letter-spacing:.1em;color:rgba(255,255,255,.56)}
.footer-cols{display:grid;grid-template-columns:repeat(3,1fr);gap:40px}
.footer-col h4{font-size:12px;letter-spacing:.32em;color:rgba(255,255,255,.48);font-weight:700;margin-bottom:20px}
.footer-col a,.footer-col p{display:block;padding:7px 0;font-size:14px;color:rgba(255,255,255,.86);letter-spacing:.04em}
.footer-col a{transition:color .3s,padding-left .3s}
.footer-col a:hover{color:#FFFFFF;padding-left:6px}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:var(--sp-3);flex-wrap:wrap;border-top:1px solid rgba(255,255,255,.16);padding:26px 0;font-size:12px;letter-spacing:.1em;color:rgba(255,255,255,.5)}

/* ---------- 返回顶部 ---------- */
.back-top{position:fixed;right:40px;bottom:40px;width:52px;height:52px;background:var(--black);color:var(--paper);display:grid;place-items:center;font-size:15px;z-index:90;opacity:0;visibility:hidden;transform:translateY(12px);transition:opacity .35s var(--ease),transform .35s var(--ease),visibility .35s}
.back-top.is-visible{opacity:1;visibility:visible;transform:none}
.back-top:hover{background:var(--paper);color:var(--black);outline:1px solid var(--black)}
.back-top:active{transform:translateY(2px)}

/* ---------- <1200px 兜底（避免横向滚动） ---------- */
@media (max-width:1199px){
  :root{--gutter:36px}
  .main-nav{display:none}
  .hero h1,.hero-title{font-size:clamp(48px,7vw,64px)}
  .hero-media{min-height:420px}
  .sr-thumb{display:none}
  .service-row{grid-template-columns:48px 1fr auto;gap:20px}
  .case-grid{grid-template-columns:repeat(2,1fr)}
  .stats-grid{grid-template-columns:repeat(2,1fr);row-gap:48px}
  .stat{padding:0 28px}
  .stat:nth-child(3){border-left:0;padding-left:0}
  .svc-item{grid-template-columns:64px 1fr;gap:var(--sp-3)}
  .svc-price{grid-column:2;text-align:left}
  .process-grid{grid-template-columns:1fr 1fr}
  .p-step{border-left:0;border-top:1px solid var(--hair)}
  .p-step:nth-child(-n+2){border-top:0}
  .p-step:nth-child(even){border-left:1px solid var(--hair)}
  .about-grid{grid-template-columns:1fr;gap:40px}
  .vertical-en{writing-mode:horizontal-tb;height:auto;border-left:0;border-bottom:1px solid var(--hair);padding:0 0 16px;letter-spacing:.5em}
  .team-grid{grid-template-columns:repeat(2,1fr)}
  .philo-grid{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr;gap:64px}
  .footer-top{grid-template-columns:1fr;gap:48px}
  .tst-card{padding:32px;grid-template-columns:1fr}
  .tst-mark{line-height:1}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  .marquee-track{animation:none}
  *{transition-duration:.01ms!important;animation-duration:.01ms!important}
}