/* ==========================================================================
   归真书画院 yishujiaus.com — 全站样式
   水墨 / 宣纸 / 朱砂 风格
   ========================================================================== */

:root {
    --ink: #1f1b17;
    --ink-soft: #3a342d;
    --paper: #f6f1e7;
    --paper-2: #efe7d6;
    --paper-3: #e6dcc6;
    --cinnabar: #9e2b25;
    --cinnabar-dark: #7e211c;
    --gold: #b0894f;
    --gold-soft: #c9a96a;
    --dark: #221d18;
    --white: #ffffff;
    --muted: #6f665a;
    --line: rgba(31, 27, 23, 0.12);
    --shadow: 0 10px 30px rgba(34, 29, 24, 0.12);
    --radius: 6px;
    --transition: all 0.3s ease;
    --serif: "Noto Serif SC", "Songti SC", "STSong", "SimSun", "Source Han Serif SC", serif;
    --sans: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
    font-family: var(--sans);
    color: var(--ink);
    line-height: 1.85;
    background-color: var(--paper);
    background-image:
        radial-gradient(circle at 20% 15%, rgba(176, 137, 79, 0.05), transparent 40%),
        radial-gradient(circle at 85% 80%, rgba(158, 43, 37, 0.04), transparent 45%);
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

.container { width: 92%; max-width: 1180px; margin: 0 auto; }

h1, h2, h3, h4 { font-family: var(--serif); font-weight: 600; line-height: 1.35; color: var(--ink); }

a { color: var(--cinnabar); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--gold); }

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

section { padding: 4.5rem 0; }

/* ---------- 通用区块标题 ---------- */
.section-head { text-align: center; max-width: 760px; margin: 0 auto 3rem; }
.section-head .label {
    display: inline-block;
    font-family: var(--serif);
    color: var(--cinnabar);
    letter-spacing: 0.4em;
    font-size: 0.85rem;
    margin-bottom: 0.8rem;
    padding-left: 0.4em;
}
.section-head h2 { font-size: 2.1rem; position: relative; display: inline-block; }
.section-head h2::after {
    content: "";
    display: block;
    width: 54px; height: 3px;
    background: var(--gold);
    margin: 0.9rem auto 0;
}
.section-head p { color: var(--muted); margin-top: 1rem; font-size: 1.02rem; }

/* ==========================================================================
   顶部导航
   ========================================================================== */
header.site-header {
    position: sticky; top: 0; z-index: 100;
    background: rgba(246, 241, 231, 0.92);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--line);
}
.nav {
    display: flex; align-items: center; justify-content: space-between;
    padding: 0.85rem 0;
}
.logo a { display: flex; align-items: center; gap: 0.7rem; color: var(--ink); }
.logo .seal {
    width: 46px; height: 46px;
    background: var(--cinnabar);
    color: #fff;
    font-family: var(--serif);
    font-size: 1.5rem; font-weight: 700;
    display: flex; align-items: center; justify-content: center;
    border-radius: 4px;
    box-shadow: inset 0 0 0 2px rgba(255,255,255,0.25);
    flex-shrink: 0;
}
.logo .logo-text { font-family: var(--serif); }
.logo .logo-text strong { display: block; font-size: 1.25rem; letter-spacing: 0.08em; color: var(--ink); }
.logo .logo-text span { display: block; font-size: 0.66rem; letter-spacing: 0.22em; color: var(--muted); text-transform: uppercase; }
.logo a:hover .logo-text strong { color: var(--cinnabar); }

.nav-links { display: flex; align-items: center; gap: 0.3rem; list-style: none; }
.nav-links a {
    color: var(--ink-soft); font-family: var(--serif); font-size: 1rem;
    padding: 0.5rem 0.85rem; border-radius: 4px; letter-spacing: 0.04em;
}
.nav-links a:hover, .nav-links a.active { color: var(--cinnabar); background: rgba(158, 43, 37, 0.07); }
.nav-cta a {
    background: var(--cinnabar); color: #fff !important;
    padding: 0.55rem 1.2rem; border-radius: 4px; margin-left: 0.4rem;
}
.nav-cta a:hover { background: var(--cinnabar-dark); color: #fff !important; }

.nav-toggle { display: none; background: none; border: none; cursor: pointer; flex-direction: column; gap: 5px; padding: 6px; }
.nav-toggle span { width: 26px; height: 2px; background: var(--ink); transition: var(--transition); }

/* ==========================================================================
   通用 Hero / 页头
   ========================================================================== */
.page-hero {
    position: relative; color: #fff; text-align: center;
    padding: 5.5rem 0;
    background: linear-gradient(rgba(20,16,13,0.62), rgba(20,16,13,0.62)), var(--hero-img) center/cover no-repeat;
}
.page-hero h1 { color: #fff; font-size: 2.6rem; letter-spacing: 0.06em; }
.page-hero p { color: rgba(255,255,255,0.88); margin-top: 1rem; font-size: 1.1rem; }
.breadcrumb { margin-top: 1.3rem; font-size: 0.9rem; color: rgba(255,255,255,0.75); font-family: var(--serif); }
.breadcrumb a { color: var(--gold-soft); }

/* ==========================================================================
   首页 Hero
   ========================================================================== */
.hero {
    position: relative; min-height: 86vh; display: flex; align-items: center;
    color: #fff;
    background: linear-gradient(rgba(22,17,13,0.55), rgba(22,17,13,0.68)),
        url("images/master-calligraphy-couplets.jpg") center/cover no-repeat;
}
.hero-inner { max-width: 760px; }
.hero .pre {
    font-family: var(--serif); letter-spacing: 0.4em; color: var(--gold-soft);
    font-size: 0.95rem; margin-bottom: 1.2rem;
}
.hero h1 { color: #fff; font-size: 3.4rem; line-height: 1.25; letter-spacing: 0.04em; }
.hero h1 .accent { color: var(--gold-soft); }
.hero .sub { font-size: 1.2rem; color: rgba(255,255,255,0.9); margin: 1.4rem 0 0.4rem; font-family: var(--serif); }
.hero .desc { color: rgba(255,255,255,0.82); margin: 1rem 0 2rem; max-width: 580px; }
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }

.btn {
    display: inline-block; font-family: var(--serif); letter-spacing: 0.08em;
    padding: 0.85rem 1.9rem; border-radius: 4px; cursor: pointer;
    border: 2px solid transparent; font-size: 1.02rem; transition: var(--transition);
}
.btn-primary { background: var(--cinnabar); color: #fff; border-color: var(--cinnabar); }
.btn-primary:hover { background: var(--cinnabar-dark); border-color: var(--cinnabar-dark); color: #fff; }
.btn-ghost { background: transparent; color: #fff; border-color: rgba(255,255,255,0.6); }
.btn-ghost:hover { background: #fff; color: var(--ink); border-color: #fff; }
.btn-dark { background: var(--ink); color: #fff; border-color: var(--ink); }
.btn-dark:hover { background: var(--cinnabar); border-color: var(--cinnabar); color: #fff; }

/* ---------- 横幅金句 ---------- */
.banner-quote {
    background: var(--dark); color: var(--paper); text-align: center; padding: 3rem 0;
}
.banner-quote .zh { font-family: var(--serif); font-size: 1.9rem; letter-spacing: 0.12em; color: var(--gold-soft); }
.banner-quote .en { color: rgba(255,255,255,0.6); letter-spacing: 0.25em; margin-top: 0.6rem; font-size: 0.85rem; text-transform: uppercase; }

/* ==========================================================================
   服务卡片网格
   ========================================================================== */
.grid { display: grid; gap: 1.6rem; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
    background: var(--white); border: 1px solid var(--line); border-radius: var(--radius);
    overflow: hidden; transition: var(--transition); display: flex; flex-direction: column;
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: rgba(176,137,79,0.4); }
.card .card-img { aspect-ratio: 4/3; overflow: hidden; background: var(--paper-3); }
.card .card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease; }
.card:hover .card-img img { transform: scale(1.06); }
.card .card-body { padding: 1.5rem 1.4rem 1.7rem; flex: 1; display: flex; flex-direction: column; }
.card .card-body h3 { font-size: 1.3rem; margin-bottom: 0.6rem; }
.card .card-body p { color: var(--muted); font-size: 0.96rem; flex: 1; }
.card .card-link { margin-top: 1rem; font-family: var(--serif); color: var(--cinnabar); font-size: 0.95rem; }
.card .card-link::after { content: " →"; }

/* 服务图标卡（无图） */
.service-tile {
    background: var(--white); border: 1px solid var(--line); border-radius: var(--radius);
    padding: 2rem 1.6rem; transition: var(--transition); text-align: center;
}
.service-tile:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.service-tile .ico {
    width: 60px; height: 60px; margin: 0 auto 1.1rem; border-radius: 50%;
    background: rgba(158,43,37,0.08); color: var(--cinnabar);
    display: flex; align-items: center; justify-content: center;
    font-family: var(--serif); font-size: 1.7rem; font-weight: 700;
}
.service-tile h3 { font-size: 1.2rem; margin-bottom: 0.5rem; }
.service-tile p { color: var(--muted); font-size: 0.93rem; }

/* ==========================================================================
   图文交替版块
   ========================================================================== */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; align-items: center; }
.split.reverse .split-media { order: 2; }
.split-media { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.split-media img { width: 100%; height: 100%; object-fit: cover; max-height: 520px; }
.split-text .label { color: var(--cinnabar); font-family: var(--serif); letter-spacing: 0.3em; font-size: 0.82rem; }
.split-text h2 { font-size: 2rem; margin: 0.7rem 0 1.2rem; }
.split-text p { color: var(--ink-soft); margin-bottom: 1rem; }
.split-text ul { list-style: none; margin: 1.2rem 0; }
.split-text ul li { padding: 0.35rem 0 0.35rem 1.7rem; position: relative; color: var(--ink-soft); }
.split-text ul li::before { content: "印"; position: absolute; left: 0; color: var(--cinnabar); font-family: var(--serif); font-size: 0.85rem; }

.bg-paper-2 { background: var(--paper-2); }

/* ==========================================================================
   作品画廊
   ========================================================================== */
.gallery-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.2rem; }
.gallery-grid figure {
    position: relative; overflow: hidden; border-radius: var(--radius);
    background: var(--paper-3); box-shadow: 0 4px 14px rgba(34,29,24,0.08);
}
.gallery-grid figure img { width: 100%; height: 320px; object-fit: cover; transition: transform 0.6s ease; }
.gallery-grid figure:hover img { transform: scale(1.07); }
.gallery-grid figcaption {
    position: absolute; left: 0; right: 0; bottom: 0;
    background: linear-gradient(transparent, rgba(20,16,13,0.82));
    color: #fff; padding: 1.6rem 1rem 0.9rem; font-family: var(--serif);
    transform: translateY(8px); opacity: 0; transition: var(--transition);
    font-size: 0.98rem; letter-spacing: 0.04em;
}
.gallery-grid figure:hover figcaption { transform: translateY(0); opacity: 1; }

/* ==========================================================================
   统计 / 特色条
   ========================================================================== */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; text-align: center; }
.stats .stat .num { font-family: var(--serif); font-size: 2.6rem; color: var(--cinnabar); line-height: 1; }
.stats .stat .lbl { color: var(--muted); margin-top: 0.5rem; letter-spacing: 0.05em; }

/* ==========================================================================
   流程步骤
   ========================================================================== */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.4rem; counter-reset: step; }
.step { background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); padding: 2rem 1.4rem; position: relative; }
.step::before {
    counter-increment: step; content: counter(step, decimal-leading-zero);
    font-family: var(--serif); font-size: 1.6rem; color: var(--gold); display: block; margin-bottom: 0.7rem;
}
.step h3 { font-size: 1.12rem; margin-bottom: 0.4rem; }
.step p { color: var(--muted); font-size: 0.92rem; }

/* ==========================================================================
   CTA 区
   ========================================================================== */
.cta-band {
    background: linear-gradient(rgba(22,17,13,0.78), rgba(22,17,13,0.85)),
        url("images/calligraphy-dragon-paper.jpg") center/cover no-repeat;
    color: #fff; text-align: center; padding: 4.5rem 0;
}
.cta-band h2 { color: #fff; font-size: 2.2rem; }
.cta-band p { color: rgba(255,255,255,0.85); margin: 1rem auto 2rem; max-width: 560px; }
.cta-phone { font-family: var(--serif); font-size: 1.6rem; color: var(--gold-soft); margin-top: 1.4rem; }
.cta-phone a { color: var(--gold-soft); }

/* ==========================================================================
   联系页
   ========================================================================== */
.contact-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; align-items: start; }
.info-block { margin-bottom: 1.8rem; display: flex; gap: 1rem; align-items: flex-start; }
.info-block .ico {
    width: 46px; height: 46px; flex-shrink: 0; border-radius: 50%;
    background: rgba(158,43,37,0.08); color: var(--cinnabar);
    display: flex; align-items: center; justify-content: center; font-family: var(--serif); font-size: 1.2rem;
}
.info-block h4 { font-size: 1.05rem; margin-bottom: 0.2rem; }
.info-block p, .info-block a { color: var(--ink-soft); font-size: 0.98rem; }

.contact-form { background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); padding: 2.2rem; box-shadow: var(--shadow); }
.contact-form h3 { font-size: 1.4rem; margin-bottom: 1.3rem; }
.contact-form input, .contact-form select, .contact-form textarea {
    width: 100%; padding: 0.8rem 1rem; margin-bottom: 1rem; font-family: var(--sans);
    border: 1px solid var(--line); border-radius: 4px; background: var(--paper); font-size: 1rem; color: var(--ink);
}
.contact-form textarea { min-height: 130px; resize: vertical; }
.contact-form input:focus, .contact-form select:focus, .contact-form textarea:focus {
    outline: none; border-color: var(--cinnabar); background: #fff;
}
.contact-form button { width: 100%; border: none; }

.map-wrap { margin-top: 1rem; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); }
.map-wrap iframe { width: 100%; height: 320px; border: 0; display: block; }

/* ==========================================================================
   价目 / 列表卡
   ========================================================================== */
.feature-list { list-style: none; }
.feature-list li {
    background: var(--white); border: 1px solid var(--line); border-left: 4px solid var(--cinnabar);
    padding: 1.1rem 1.4rem; margin-bottom: 1rem; border-radius: 4px;
}
.feature-list li strong { font-family: var(--serif); display: block; margin-bottom: 0.2rem; font-size: 1.08rem; }
.feature-list li span { color: var(--muted); font-size: 0.94rem; }

.prose { max-width: 820px; margin: 0 auto; }
.prose h2 { font-size: 1.7rem; margin: 2rem 0 1rem; }
.prose h3 { font-size: 1.3rem; margin: 1.6rem 0 0.7rem; color: var(--cinnabar); }
.prose p { color: var(--ink-soft); margin-bottom: 1rem; }

/* ==========================================================================
   Footer
   ========================================================================== */
footer.site-footer { background: var(--dark); color: rgba(255,255,255,0.78); padding: 3.5rem 0 1.5rem; margin-top: 0; }
.footer-content { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 2.5rem; margin-bottom: 2.2rem; }
.footer-section h3 { color: #fff; font-size: 1.2rem; margin-bottom: 1rem; }
.footer-section p, .footer-section a { color: rgba(255,255,255,0.72); line-height: 1.9; font-size: 0.95rem; }
.footer-section a:hover { color: var(--gold-soft); }
.footer-section .brand-zh { font-family: var(--serif); font-size: 1.15rem; color: var(--gold-soft); letter-spacing: 0.08em; }
.footer-bottom { text-align: center; padding-top: 1.8rem; border-top: 1px solid rgba(255,255,255,0.12); color: rgba(255,255,255,0.55); font-size: 0.9rem; }
.footer-bottom p { margin-bottom: 0.4rem; }
.footer-partner { margin-top: 1rem; font-size: 0.88rem; color: rgba(255,255,255,0.6); }
.footer-partner a { color: var(--gold-soft); }
.footer-partner a:hover { color: #fff; }

/* ==========================================================================
   响应式
   ========================================================================== */
@media (max-width: 900px) {
    .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .gallery-grid { grid-template-columns: repeat(2, 1fr); }
    .stats, .steps { grid-template-columns: repeat(2, 1fr); }
    .split, .contact-layout { grid-template-columns: 1fr; gap: 2rem; }
    .split.reverse .split-media { order: 0; }
    .footer-content { grid-template-columns: 1fr 1fr; }
    .hero h1 { font-size: 2.6rem; }
}
@media (max-width: 640px) {
    .nav-links {
        position: fixed; top: 70px; right: 0; height: calc(100vh - 70px); width: 75%;
        background: var(--paper); flex-direction: column; align-items: flex-start;
        padding: 1.5rem; gap: 0.4rem; transform: translateX(100%); transition: var(--transition);
        box-shadow: -6px 0 24px rgba(0,0,0,0.12); border-left: 1px solid var(--line);
    }
    .nav-links.open { transform: translateX(0); }
    .nav-links a { width: 100%; }
    .nav-toggle { display: flex; }
    .grid-3, .grid-4, .grid-2, .gallery-grid, .stats, .steps, .footer-content { grid-template-columns: 1fr; }
    .hero h1 { font-size: 2.1rem; }
    .hero { min-height: 78vh; }
    section { padding: 3rem 0; }
    .page-hero h1 { font-size: 2rem; }
    .section-head h2 { font-size: 1.7rem; }
}