/*
Theme Name: Takkei Theme
Theme URI:
Description: 竹恵 - おもだか屋風和モダンデザインテーマ
Version: 3.1
Author: Takkei Project
Text Domain: takkei-theme
*/

/* ========================================
   CONFIG
   ======================================== */
:root {
    --img-hero:    url('images/hero-bamboo.jpg');
    --img-problem: url('images/bamboo-problem.jpg');
    --img-divider: url('images/bamboo-powder.jpg');
    --img-message: url('images/bamboo-usage.jpg');
    --color-primary:       #2c4a2c;
    --color-primary-light: #3a6b4a;
    --color-accent:        #b8a88a;
    --color-bg-warm:       #f7f6f2;
    --color-text:          #32373c;
    --color-text-light:    #555;
    --color-text-muted:    #888;
}

/* ========================================
   Reset & Base
   ======================================== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { font-size: 16px; scroll-behavior: smooth; }
body {
    font-family: "Noto Serif JP", "游明朝", "YuMincho", serif;
    color: var(--color-text);
    background: #fff;
    line-height: 1.9;
    letter-spacing: 0.08em;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-text); text-decoration: none; transition: opacity 0.3s; }
a:hover { opacity: 0.7; }
ul { list-style: none; }

/* ========================================
   Header
   ======================================== */
.site-header {
    position: fixed; top: 0; left: 0; width: 100%; z-index: 1000;
    background: rgba(255,255,255,0.95); backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0,0,0,0.06);
}
.header-inner {
    max-width: 1200px; margin: 0 auto; padding: 0.6rem 1.2rem;
    display: flex; align-items: center; justify-content: space-between;
}
.site-logo { display: flex; align-items: center; gap: 0.6rem; }
.logo-mark { font-size: 2rem; font-weight: 900; color: var(--color-primary); line-height: 1; letter-spacing: 0.05em; }
.logo-sub { font-size: 0.55rem; color: var(--color-text-muted); letter-spacing: 0.15em; line-height: 1.4; }
.header-actions { display: flex; align-items: center; gap: 1rem; }
.header-sns a { display: flex; align-items: center; gap: 0.3rem; font-size: 0.7rem; color: var(--color-text-muted); }
.header-sns svg { width: 18px; height: 18px; fill: var(--color-text-muted); transition: fill 0.3s; }
.header-sns a:hover svg { fill: var(--color-text); }

/* モバイルナビ */
.header-nav {
    display: none;
    position: fixed; top: 0; left: 0; width: 100%; height: 100vh;
    background: rgba(255,255,255,0.98);
    flex-direction: column; justify-content: center; align-items: center; gap: 2.5rem;
    z-index: 1050;
}
.header-nav.open { display: flex; }
.header-nav a {
    font-size: 1rem; letter-spacing: 0.15em; color: var(--color-text-light); position: relative;
}
.header-nav a::after {
    content: ""; position: absolute; bottom: -4px; left: 50%; width: 0; height: 1px;
    background: var(--color-text); transition: all 0.3s; transform: translateX(-50%);
}
.header-nav a:hover { opacity: 1; color: var(--color-text); }
.header-nav a:hover::after { width: 100%; }

.hamburger {
    display: flex; flex-direction: column; gap: 5px; cursor: pointer;
    padding: 8px; background: none; border: none; z-index: 1100;
}
.hamburger span { display: block; width: 22px; height: 1.5px; background: var(--color-text); transition: all 0.4s cubic-bezier(0.23,1,0.32,1); }
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(4.5px,4.5px); }
.hamburger.active span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(4.5px,-4.5px); }

/* ========================================
   Hero
   ======================================== */
.hero {
    position: relative; height: 100vh; height: 100svh; min-height: 500px;
    display: flex; align-items: center; justify-content: center; text-align: center; overflow: hidden;
}
.hero-bg {
    position: absolute; inset: 0;
    background: var(--img-hero) center/cover no-repeat;
    z-index: 1; transform: scale(1.05);
    animation: heroZoom 20s ease-in-out infinite alternate;
}
@keyframes heroZoom {
    0%   { transform: scale(1.05); }
    100% { transform: scale(1.15); }
}
.hero-bg::after {
    content: ""; position: absolute; inset: 0;
    background: linear-gradient(180deg, rgba(0,0,0,0.3) 0%, rgba(0,0,0,0.45) 50%, rgba(0,0,0,0.6) 100%);
    z-index: 2;
}
.hero-content {
    position: relative; z-index: 3; color: #fff;
    padding: 4rem 1.5rem 0; /* ヘッダー分の余白 */
}

/* ヒーロー縦書きタイトル - ブラーアニメーション */
.hero-vertical-title {
    writing-mode: vertical-rl;
    font-size: 1.6rem;
    font-weight: 900;
    letter-spacing: 0.4em;
    margin: 0 auto 2rem;
    line-height: 1.6;
    text-shadow: 0 2px 40px rgba(0,0,0,0.5);
    max-height: 55vh;
    overflow: hidden;
    opacity: 0;
    filter: blur(12px);
    transform: translateY(20px);
    animation: heroTitleIn 1.2s cubic-bezier(0.23,1,0.32,1) 0.3s forwards;
}
@keyframes heroTitleIn {
    to { opacity: 1; filter: blur(0px); transform: translateY(0); }
}

.hero-subtitle {
    font-size: 0.85rem; letter-spacing: 0.2em; font-weight: 300; line-height: 2.2;
    opacity: 0; filter: blur(8px);
    animation: heroTitleIn 1s cubic-bezier(0.23,1,0.32,1) 0.8s forwards;
}
.hero-cta {
    margin-top: 2.5rem;
    opacity: 0;
    animation: heroTitleIn 1s cubic-bezier(0.23,1,0.32,1) 1.2s forwards;
}

.btn-primary {
    display: inline-block; padding: 0.9rem 2.5rem;
    border: 1px solid rgba(255,255,255,0.7); color: #fff;
    font-size: 0.78rem; letter-spacing: 0.2em; font-family: inherit;
    transition: all 0.4s cubic-bezier(0.23,1,0.32,1); position: relative; overflow: hidden;
}
.btn-primary::before {
    content: ""; position: absolute; inset: 0;
    background: rgba(255,255,255,0.15); transform: translateY(100%);
    transition: transform 0.4s cubic-bezier(0.23,1,0.32,1);
}
.btn-primary:hover { opacity: 1; }
.btn-primary:hover::before { transform: translateY(0); }

.hero-scroll {
    position: absolute; bottom: 30px; left: 50%; transform: translateX(-50%);
    z-index: 3; color: rgba(255,255,255,0.5); font-size: 0.6rem; letter-spacing: 0.25em;
}
.hero-scroll::after {
    content: ""; display: block; width: 1px; height: 40px;
    background: rgba(255,255,255,0.35); margin: 8px auto 0;
    animation: scrollLine 2s ease-in-out infinite;
}
@keyframes scrollLine {
    0%    { transform: scaleY(0); transform-origin: top; }
    50%   { transform: scaleY(1); transform-origin: top; }
    50.1% { transform: scaleY(1); transform-origin: bottom; }
    100%  { transform: scaleY(0); transform-origin: bottom; }
}

/* ========================================
   Shared Section
   ======================================== */
.section { padding: 5rem 1.2rem; }
.section-inner { max-width: 1000px; margin: 0 auto; }
.section-label {
    display: inline-block; font-size: 0.6rem; letter-spacing: 0.3em;
    color: var(--color-text-muted); text-transform: uppercase; margin-bottom: 0.5rem;
}
.section h2 {
    font-size: 1.4rem; font-weight: 700; letter-spacing: 0.12em;
    margin-bottom: 2rem; line-height: 1.7;
}
.section h2::after { content: ""; display: block; width: 30px; height: 2px; background: var(--color-primary-light); margin-top: 1rem; }
.section p { font-size: 0.88rem; line-height: 2.2; color: var(--color-text-light); margin-bottom: 1.5rem; }
.vertical-accent {
    writing-mode: vertical-rl; font-size: 0.7rem; letter-spacing: 0.5em;
    color: var(--color-accent); position: absolute; opacity: 0.3;
}
.section-image {
    width: 100%; height: 300px;
    background: var(--img-divider) center/cover no-repeat; position: relative;
}
.section-image::after {
    content: ""; position: absolute; inset: 0;
    background: linear-gradient(180deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0) 20%, rgba(255,255,255,0) 80%, rgba(255,255,255,0.1) 100%);
}

/* ========================================
   縦書き見出し
   ======================================== */
.section-title-wrap {
    display: flex; align-items: flex-start; gap: 1.6rem; margin-bottom: 2.5rem;
}
.section-title-wrap .section-label {
    writing-mode: vertical-rl; font-size: 0.58rem; letter-spacing: 0.3em;
    color: var(--color-text-muted); margin-bottom: 0; padding-top: 0.2em;
}
.vertical-heading {
    writing-mode: vertical-rl; text-orientation: mixed;
    font-size: clamp(1.4rem, 4vw, 2rem); font-weight: 700; letter-spacing: 0.25em;
    line-height: 1.5; color: var(--color-text);
    display: flex; flex-direction: column; gap: 0.8em; margin-bottom: 0;
}
.vertical-heading::after { display: none; }
.vertical-heading .vertical-sub {
    font-size: 0.55em; font-weight: 400; letter-spacing: 0.2em;
    color: var(--color-text-muted); opacity: 0.8; writing-mode: vertical-rl;
}
.vertical-heading--white { color: #fff; }
.vertical-heading--white .vertical-sub { color: rgba(255,255,255,0.6); }
.vertical-heading--center { margin: 0 auto; }
.section-desc-text {
    font-size: 0.82rem; color: var(--color-text-light); line-height: 2.2;
    writing-mode: vertical-rl; max-height: 200px;
}

/* ========================================
   Problem
   ======================================== */
.section-problem { background: #fff; position: relative; }
.problem-layout { display: grid; grid-template-columns: 1fr; gap: 2rem; margin-bottom: 2.5rem; }
.problem-photo { overflow: hidden; position: relative; }
.problem-photo-inner {
    width: 100%; height: 280px;
    background: var(--img-problem) center/cover no-repeat;
    transition: transform 0.8s cubic-bezier(0.23,1,0.32,1);
}
.problem-photo:hover .problem-photo-inner { transform: scale(1.03); }
.problem-photo .vertical-accent { top: 1rem; right: 1rem; font-size: 0.85rem; letter-spacing: 0.4em; color: #fff; opacity: 0.6; text-shadow: 0 1px 8px rgba(0,0,0,0.5); z-index: 2; }
.problem-list { display: flex; flex-direction: column; gap: 1.2rem; }
.problem-item {
    padding: 1.5rem; background: #fafaf8; border-left: 3px solid var(--color-accent);
    transition: all 0.5s cubic-bezier(0.23,1,0.32,1);
}
.problem-item:hover { transform: translateX(4px); box-shadow: 0 4px 20px rgba(0,0,0,0.06); }
.problem-item strong { display: block; font-size: 0.92rem; color: var(--color-text); margin-bottom: 0.4rem; letter-spacing: 0.08em; }
.problem-item p { font-size: 0.82rem; margin-bottom: 0; color: #666; }

/* ========================================
   Powder
   ======================================== */
.section-powder { background: var(--color-bg-warm); }
.powder-grid { display: grid; grid-template-columns: 1fr; gap: 1.2rem; margin-top: 1.5rem; }
.powder-card {
    background: #fff; padding: 2rem 1.5rem; text-align: center;
    border: 1px solid rgba(0,0,0,0.05);
    transition: all 0.5s cubic-bezier(0.23,1,0.32,1);
}
.powder-card:hover { transform: translateY(-6px); box-shadow: 0 16px 40px rgba(0,0,0,0.08); }
.powder-icon { width: 50px; height: 50px; margin: 0 auto 1.2rem; display: flex; align-items: center; justify-content: center; background: #f0ede6; border-radius: 50%; font-size: 1.3rem; }
.powder-card h3 { font-size: 0.92rem; font-weight: 700; letter-spacing: 0.08em; margin-bottom: 0.8rem; }
.powder-card p { font-size: 0.8rem; color: #666; margin-bottom: 0; }

/* ========================================
   Usage
   ======================================== */
.section-usage { background: #fff; }
.usage-table { width: 100%; border-collapse: collapse; margin-top: 1.5rem; }
.usage-table thead th {
    background: var(--color-primary-light); color: #fff;
    font-size: 0.78rem; font-weight: 500; letter-spacing: 0.12em;
    padding: 0.8rem 1rem; text-align: left;
}
.usage-table thead th:first-child { width: 110px; }
.usage-table tbody td {
    padding: 1rem; font-size: 0.82rem; color: var(--color-text-light);
    border-bottom: 1px solid #eee; line-height: 1.9; vertical-align: top;
}
.usage-table tbody tr { transition: background 0.3s; }
.usage-table tbody tr:hover { background: #fafaf8; }
.usage-table tbody td:first-child { font-weight: 700; color: var(--color-text); letter-spacing: 0.08em; }

/* ========================================
   Message
   ======================================== */
.section-message {
    position: relative; color: #fff; text-align: center;
    padding: 6rem 1.2rem; overflow: hidden;
}
.message-bg {
    position: absolute; inset: 0;
    background: var(--img-message) center/cover no-repeat;
    z-index: 1; transform: scale(1.05);
}
.message-bg::after { content: ""; position: absolute; inset: 0; background: rgba(25,50,30,0.78); z-index: 2; }
.section-message .section-inner { position: relative; z-index: 3; }
.section-message h2 { font-size: 1.3rem; color: #fff; letter-spacing: 0.18em; line-height: 2; }
.section-message h2::after { background: rgba(255,255,255,0.35); margin: 1rem auto 0; }
.section-message p { color: rgba(255,255,255,0.8); font-size: 0.85rem; max-width: 700px; margin: 0 auto; line-height: 2.4; }

/* ========================================
   アコーディオン
   ======================================== */
.accordion-btn {
    display: flex; align-items: center; gap: 0.6rem;
    margin-top: 1.8rem; padding: 0.7rem 1.4rem;
    background: transparent; border: 1px solid var(--color-accent);
    color: var(--color-text-light); font-family: inherit;
    font-size: 0.78rem; letter-spacing: 0.2em; cursor: pointer;
    transition: all 0.3s cubic-bezier(0.23,1,0.32,1);
}
.accordion-btn:hover {
    background: var(--color-primary); border-color: var(--color-primary); color: #fff;
}
.accordion-btn[aria-expanded="true"] {
    background: var(--color-primary); border-color: var(--color-primary); color: #fff;
}
.accordion-btn--white {
    border-color: rgba(255,255,255,0.5); color: rgba(255,255,255,0.8); margin: 1.5rem auto 0;
}
.accordion-btn--white:hover,
.accordion-btn--white[aria-expanded="true"] {
    background: rgba(255,255,255,0.15); border-color: rgba(255,255,255,0.8); color: #fff;
}
.accordion-btn-icon {
    display: inline-block; font-size: 0.65rem;
    transition: transform 0.4s cubic-bezier(0.23,1,0.32,1);
}
.accordion-btn[aria-expanded="true"] .accordion-btn-icon { transform: rotate(180deg); }

/* 確実に隠す：grid-template-rows 方式 */
.accordion-body {
    display: grid;
    grid-template-rows: 0fr;
    opacity: 0;
    transition: grid-template-rows 0.55s cubic-bezier(0.23,1,0.32,1),
                opacity 0.45s cubic-bezier(0.23,1,0.32,1);
}
.accordion-body.open {
    grid-template-rows: 1fr;
    opacity: 1;
}
/* ← ここが必須：子要素の overflow: hidden がないと grid-template-rows が効かない */
.accordion-body-inner {
    overflow: hidden;
    min-height: 0;
    padding-top: 0;
    transition: padding-top 0.4s cubic-bezier(0.23,1,0.32,1);
}
.accordion-body.open .accordion-body-inner {
    padding-top: 1.8rem;
}

/* ========================================
   Blog セクション
   ======================================== */
.section-blog { background: var(--color-bg-warm); overflow: hidden; }

/* ========================================
   Shop セクション
   ======================================== */
.section-shop { background: #fff; overflow: hidden; }

/* ========================================
   カルーセル共通
   ======================================== */
.carousel-wrap { position: relative; margin: 0 -1.2rem; }
.carousel {
    display: flex; gap: 1rem; overflow-x: auto;
    scroll-snap-type: x mandatory; -webkit-overflow-scrolling: touch;
    padding: 0.5rem 1.2rem 1.5rem; scrollbar-width: none;
}
.carousel::-webkit-scrollbar { display: none; }
.carousel-card {
    flex: 0 0 calc(80vw - 2.4rem); max-width: 320px;
    scroll-snap-align: start; background: #fff;
    border: 1px solid rgba(0,0,0,0.06);
    transition: transform 0.4s cubic-bezier(0.23,1,0.32,1), box-shadow 0.4s;
    overflow: hidden;
}
.carousel-card:hover { transform: translateY(-6px); box-shadow: 0 16px 40px rgba(0,0,0,0.1); }
.carousel-card a { display: block; color: var(--color-text); }
.carousel-card a:hover { opacity: 1; }
.carousel-card-img {
    position: relative; width: 100%; aspect-ratio: 4 / 3; overflow: hidden; background: #eee;
}
.carousel-card-img img {
    width: 100%; height: 100%; object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.23,1,0.32,1);
}
.carousel-card:hover .carousel-card-img img { transform: scale(1.05); }
.carousel-card-img-placeholder {
    width: 100%; height: 100%;
    background: linear-gradient(135deg, #e8ede8, #c8d8c8);
}
.carousel-card-badge {
    position: absolute; top: 0.6rem; left: 0.6rem;
    background: #c0392b; color: #fff;
    font-size: 0.62rem; font-weight: 700; letter-spacing: 0.1em;
    padding: 3px 8px; z-index: 2;
}
.carousel-card-body { padding: 1rem 1.1rem 1.3rem; }
.carousel-card-date { display: block; font-size: 0.68rem; color: var(--color-text-muted); letter-spacing: 0.12em; margin-bottom: 0.4rem; }
.carousel-card-title {
    font-size: 0.88rem; font-weight: 700; letter-spacing: 0.06em; line-height: 1.6; margin-bottom: 0.5rem;
    display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.carousel-card-excerpt {
    font-size: 0.75rem; color: #777; line-height: 1.8; margin-bottom: 0;
    display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.carousel-card-price { font-size: 0.9rem; font-weight: 700; color: var(--color-primary); margin-bottom: 0; }
.carousel-card--shop .carousel-card-img { aspect-ratio: 1 / 1; }
.carousel-btn {
    display: none;
    position: absolute; top: 50%; transform: translateY(-60%);
    width: 44px; height: 44px; background: #fff;
    border: 1px solid rgba(0,0,0,0.12); border-radius: 50%;
    font-size: 1rem; color: var(--color-text); cursor: pointer; z-index: 10;
    align-items: center; justify-content: center;
    box-shadow: 0 4px 16px rgba(0,0,0,0.1); transition: all 0.3s;
}
.carousel-btn:hover { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }
.carousel-btn--prev { left: 1.2rem; }
.carousel-btn--next { right: 1.2rem; }
.carousel-empty { padding: 2rem 1.2rem; font-size: 0.85rem; color: var(--color-text-muted); }
.section-more { text-align: center; margin-top: 2rem; }
.btn-more {
    display: inline-block; padding: 0.85rem 2.8rem;
    border: 1px solid var(--color-primary); color: var(--color-primary);
    font-size: 0.78rem; letter-spacing: 0.2em; font-family: inherit;
    transition: all 0.4s cubic-bezier(0.23,1,0.32,1); position: relative; overflow: hidden;
}
.btn-more::before {
    content: ''; position: absolute; inset: 0;
    background: var(--color-primary); transform: translateY(100%);
    transition: transform 0.4s cubic-bezier(0.23,1,0.32,1); z-index: 0;
}
.btn-more span { position: relative; z-index: 1; }
.btn-more:hover { color: #fff; opacity: 1; }
.btn-more:hover::before { transform: translateY(0); }

/* ========================================
   Contact
   ======================================== */
.section-contact { background: var(--color-bg-warm); }
.contact-inner { max-width: 600px; margin: 0 auto; text-align: center; }
.contact-inner h2::after { margin-left: auto; margin-right: auto; }
.contact-form { margin-top: 2rem; text-align: left; }
.form-group { margin-bottom: 1.5rem; }
.form-group label { display: block; font-size: 0.78rem; letter-spacing: 0.1em; color: var(--color-text); margin-bottom: 0.5rem; font-weight: 500; }
.form-group label .required { color: #c0392b; font-size: 0.65rem; margin-left: 0.3rem; }
.form-group input,
.form-group textarea {
    width: 100%; padding: 0.8rem 1rem; border: 1px solid #ddd;
    font-family: inherit; font-size: 0.85rem; letter-spacing: 0.05em;
    color: var(--color-text); background: #fff; transition: border-color 0.3s;
    -webkit-appearance: none; border-radius: 0;
}
.form-group input:focus,
.form-group textarea:focus { outline: none; border-color: var(--color-primary-light); }
.form-group textarea { min-height: 150px; resize: vertical; }
.btn-submit {
    display: block; width: 100%; padding: 1rem;
    background: var(--color-primary); color: #fff; border: none;
    font-family: inherit; font-size: 0.85rem; letter-spacing: 0.2em;
    cursor: pointer; transition: all 0.4s cubic-bezier(0.23,1,0.32,1);
}
.btn-submit:hover { background: var(--color-primary-light); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(44,74,44,0.25); }

/* ========================================
   Footer
   ======================================== */
.site-footer { background: var(--color-text); color: rgba(255,255,255,0.7); padding: 4rem 1.2rem 2rem; }
.footer-inner { max-width: 1000px; margin: 0 auto; }
.footer-top {
    display: grid; grid-template-columns: 1fr; gap: 2.5rem;
    padding-bottom: 2.5rem; border-bottom: 1px solid rgba(255,255,255,0.1);
}
.footer-brand .footer-logo { font-size: 1.6rem; font-weight: 900; color: #fff; letter-spacing: 0.1em; margin-bottom: 1rem; }
.footer-brand .footer-desc { font-size: 0.75rem; line-height: 2; color: rgba(255,255,255,0.5); margin-bottom: 1.2rem; }
.footer-sns { display: flex; gap: 1rem; }
.footer-sns a {
    display: flex; align-items: center; justify-content: center;
    width: 36px; height: 36px; border: 1px solid rgba(255,255,255,0.2);
    border-radius: 50%; transition: all 0.3s;
}
.footer-sns a:hover { opacity: 1; background: rgba(255,255,255,0.1); border-color: rgba(255,255,255,0.4); }
.footer-sns svg { width: 16px; height: 16px; fill: rgba(255,255,255,0.6); }
.footer-info h4,
.footer-links h4 { font-size: 0.72rem; letter-spacing: 0.2em; color: rgba(255,255,255,0.4); text-transform: uppercase; margin-bottom: 1rem; font-weight: 500; }
.footer-info dl { display: grid; grid-template-columns: auto 1fr; gap: 0.4rem 1rem; font-size: 0.78rem; }
.footer-info dt { color: rgba(255,255,255,0.5); font-weight: 500; }
.footer-info dd { color: rgba(255,255,255,0.7); }
.footer-links { display: flex; flex-direction: column; gap: 0.6rem; }
.footer-links a { font-size: 0.78rem; color: rgba(255,255,255,0.6); letter-spacing: 0.08em; transition: color 0.3s; }
.footer-links a:hover { opacity: 1; color: #fff; }
.footer-bottom { padding-top: 1.5rem; text-align: center; }
.footer-copy { font-size: 0.65rem; color: rgba(255,255,255,0.3); letter-spacing: 0.1em; }

/* ========================================
   追従ボタン（左下・縦並び）
   ======================================== */
.floating-btns {
    position: fixed; left: 16px; bottom: 24px; z-index: 900;
    display: flex; flex-direction: column; gap: 10px;
    opacity: 0; visibility: hidden; transform: translateY(20px);
    transition: opacity 0.4s cubic-bezier(0.23,1,0.32,1),
                visibility 0.4s,
                transform 0.4s cubic-bezier(0.23,1,0.32,1);
    pointer-events: none;
}
.floating-btns.visible { opacity: 1; visibility: visible; transform: translateY(0); pointer-events: auto; }
.floating-btn {
    display: flex; align-items: center; gap: 0; overflow: hidden;
    max-width: 48px; height: 48px; border-radius: 24px;
    transition: max-width 0.4s cubic-bezier(0.23,1,0.32,1), background 0.3s, box-shadow 0.3s;
    box-shadow: 0 4px 16px rgba(0,0,0,0.15); text-decoration: none; white-space: nowrap;
}
.floating-btn:hover { max-width: 180px; box-shadow: 0 8px 28px rgba(0,0,0,0.22); opacity: 1; }
.floating-btn--insta {
    background: radial-gradient(circle at 30% 110%, #fdf497 0%, #fdf497 5%, #fd5949 45%, #d6249f 60%, #285AEB 90%);
    color: #fff;
}
.floating-btn--tel { background: var(--color-primary); color: #fff; }
.floating-btn--tel:hover { background: var(--color-primary-light); }
.floating-btn-icon {
    width: 48px; height: 48px; flex-shrink: 0;
    display: flex; align-items: center; justify-content: center;
}
.floating-btn-icon svg { width: 20px; height: 20px; fill: #fff; }
.floating-btn-label {
    font-size: 0.72rem; font-weight: 600; letter-spacing: 0.12em;
    padding-right: 1rem; color: #fff; opacity: 0; transition: opacity 0.2s 0.1s;
}
.floating-btn:hover .floating-btn-label { opacity: 1; }

/* ========================================
   Animations
   ======================================== */
.fade-up   { opacity: 0; transform: translateY(40px); transition: opacity 1s cubic-bezier(0.23,1,0.32,1), transform 1s cubic-bezier(0.23,1,0.32,1); }
.fade-left { opacity: 0; transform: translateX(-30px); transition: opacity 1s cubic-bezier(0.23,1,0.32,1), transform 1s cubic-bezier(0.23,1,0.32,1); }
.fade-right{ opacity: 0; transform: translateX(30px);  transition: opacity 1s cubic-bezier(0.23,1,0.32,1), transform 1s cubic-bezier(0.23,1,0.32,1); }
.fade-scale{ opacity: 0; transform: scale(0.95); transition: opacity 0.8s cubic-bezier(0.23,1,0.32,1), transform 0.8s cubic-bezier(0.23,1,0.32,1); }
.fade-up.visible, .fade-left.visible, .fade-right.visible, .fade-scale.visible { opacity: 1; transform: none; }
.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; }

/* ========================================
   Desktop (768px+)
   ======================================== */
@media (min-width: 768px) {
    .header-inner { padding: 0.8rem 2rem; }
    .header-nav {
        display: flex; position: static; width: auto; height: auto;
        background: none; flex-direction: row; gap: 1.8rem;
    }
    .header-nav a { font-size: 0.75rem; }
    .header-nav a::after { left: 0; transform: none; }
    .hamburger { display: none; }

    .hero-vertical-title { font-size: 4.5rem; max-height: none; overflow: visible; }
    .hero-subtitle { font-size: 1rem; }

    .section { padding: 7rem 2rem; }
    .section h2 { font-size: 1.8rem; }
    .problem-layout { grid-template-columns: 1fr 1fr; gap: 3rem; }
    .problem-photo-inner { height: 380px; }
    .section-image { height: 400px; }
    .powder-grid { grid-template-columns: repeat(3, 1fr); gap: 2rem; }
    .usage-table thead th { padding: 1rem 1.5rem; font-size: 0.85rem; }
    .usage-table thead th:first-child { width: 160px; }
    .usage-table tbody td { padding: 1.3rem 1.5rem; font-size: 0.88rem; }
    .section-message { padding: 8rem 2rem; }
    .section-message h2 { font-size: 1.6rem; }
    .btn-submit { width: auto; display: inline-block; padding: 1rem 3rem; }
    .footer-top { grid-template-columns: 1.2fr 1fr 0.8fr; gap: 3rem; }

    .carousel-wrap { margin: 0 -2rem; }
    .carousel { padding: 0.5rem 2rem 1.5rem; gap: 1.5rem; }
    .carousel-card { flex: 0 0 280px; max-width: 280px; }
    .carousel-btn { display: flex; }
    .carousel-btn--prev { left: 0.4rem; }
    .carousel-btn--next { right: 0.4rem; }

    .vertical-heading { font-size: clamp(1.6rem, 3vw, 2.2rem); }

    .floating-btn { height: 52px; max-width: 52px; border-radius: 26px; }
    .floating-btn:hover { max-width: 200px; }
    .floating-btn-icon { width: 52px; height: 52px; }
    .floating-btn-icon svg { width: 22px; height: 22px; }
    .floating-btn-label { font-size: 0.78rem; }
}

/* ========================================
   Large Desktop (1024px+)
   ======================================== */
@media (min-width: 1024px) {
    .hero-vertical-title { font-size: 5.5rem; }
    .section h2 { font-size: 2rem; }
    .problem-photo-inner { height: 420px; }
    .carousel-card { flex: 0 0 300px; max-width: 300px; }
    .floating-btns { left: 24px; bottom: 32px; }
}